Index: projects/clang900-import/contrib/libunwind/FREEBSD-Xlist =================================================================== --- projects/clang900-import/contrib/libunwind/FREEBSD-Xlist (nonexistent) +++ projects/clang900-import/contrib/libunwind/FREEBSD-Xlist (revision 351404) @@ -0,0 +1,11 @@ +# $FreeBSD$ +.arcconfig +.clang-format +CMakeLists.txt +cmake +cmake/ +docs +docs/ +src/CMakeLists.txt +test +test/ Property changes on: projects/clang900-import/contrib/libunwind/FREEBSD-Xlist ___________________________________________________________________ Added: svn:keywords ## -0,0 +1 ## +FreeBSD=%H \ No newline at end of property Index: projects/clang900-import/contrib/libunwind/LICENSE.TXT =================================================================== --- projects/clang900-import/contrib/libunwind/LICENSE.TXT (revision 351403) +++ projects/clang900-import/contrib/libunwind/LICENSE.TXT (revision 351404) @@ -1,76 +1,311 @@ ============================================================================== -libunwind License +The LLVM Project is under the Apache License v2.0 with LLVM Exceptions: +============================================================================== + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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Index: projects/clang900-import/contrib/libunwind/include/__libunwind_config.h =================================================================== --- projects/clang900-import/contrib/libunwind/include/__libunwind_config.h (revision 351403) +++ projects/clang900-import/contrib/libunwind/include/__libunwind_config.h (revision 351404) @@ -1,148 +1,147 @@ //===------------------------- __libunwind_config.h -----------------------===// // -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// #ifndef ____LIBUNWIND_CONFIG_H__ #define ____LIBUNWIND_CONFIG_H__ #if defined(__arm__) && !defined(__USING_SJLJ_EXCEPTIONS__) && \ !defined(__ARM_DWARF_EH__) #define _LIBUNWIND_ARM_EHABI #endif #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_X86 8 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_X86_64 32 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_PPC 112 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_PPC64 116 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_ARM64 95 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_ARM 287 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_OR1K 32 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_RISCV 95 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_MIPS 65 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_SPARC 31 #if defined(_LIBUNWIND_IS_NATIVE_ONLY) # if defined(__i386__) # define _LIBUNWIND_TARGET_I386 # define _LIBUNWIND_CONTEXT_SIZE 8 # define _LIBUNWIND_CURSOR_SIZE 15 # define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_X86 # elif defined(__x86_64__) # define _LIBUNWIND_TARGET_X86_64 1 # if defined(_WIN64) # define _LIBUNWIND_CONTEXT_SIZE 54 # ifdef __SEH__ # define _LIBUNWIND_CURSOR_SIZE 204 # else # define _LIBUNWIND_CURSOR_SIZE 66 # endif # else # define _LIBUNWIND_CONTEXT_SIZE 21 # define _LIBUNWIND_CURSOR_SIZE 33 # endif # define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_X86_64 # elif defined(__powerpc64__) # define _LIBUNWIND_TARGET_PPC64 1 # define _LIBUNWIND_CONTEXT_SIZE 167 # define _LIBUNWIND_CURSOR_SIZE 179 # define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_PPC64 # elif defined(__ppc__) # define _LIBUNWIND_TARGET_PPC 1 # define _LIBUNWIND_CONTEXT_SIZE 117 # define _LIBUNWIND_CURSOR_SIZE 124 # define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_PPC # elif defined(__aarch64__) # define _LIBUNWIND_TARGET_AARCH64 1 # define _LIBUNWIND_CONTEXT_SIZE 66 # if defined(__SEH__) # define _LIBUNWIND_CURSOR_SIZE 164 # else # define _LIBUNWIND_CURSOR_SIZE 78 # endif # define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_ARM64 # elif defined(__arm__) # define _LIBUNWIND_TARGET_ARM 1 # if defined(__SEH__) # define _LIBUNWIND_CONTEXT_SIZE 42 # define _LIBUNWIND_CURSOR_SIZE 80 # elif defined(__ARM_WMMX) # define _LIBUNWIND_CONTEXT_SIZE 61 # define _LIBUNWIND_CURSOR_SIZE 68 # else # define _LIBUNWIND_CONTEXT_SIZE 42 # define _LIBUNWIND_CURSOR_SIZE 49 # endif # define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_ARM # elif defined(__or1k__) # define _LIBUNWIND_TARGET_OR1K 1 # define _LIBUNWIND_CONTEXT_SIZE 16 # define _LIBUNWIND_CURSOR_SIZE 24 # define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_OR1K # elif defined(__riscv) # define _LIBUNWIND_TARGET_RISCV 1 # define _LIBUNWIND_CONTEXT_SIZE 64 # define _LIBUNWIND_CURSOR_SIZE 76 # define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_RISCV # define _LIBUNWIND_MAX_REGISTER 96 # elif defined(__mips__) # if defined(_ABIO32) && _MIPS_SIM == _ABIO32 # define _LIBUNWIND_TARGET_MIPS_O32 1 # if defined(__mips_hard_float) # define _LIBUNWIND_CONTEXT_SIZE 50 # define _LIBUNWIND_CURSOR_SIZE 57 # else # define _LIBUNWIND_CONTEXT_SIZE 18 # define _LIBUNWIND_CURSOR_SIZE 24 # endif # elif defined(_ABIN32) && _MIPS_SIM == _ABIN32 # define _LIBUNWIND_TARGET_MIPS_NEWABI 1 # if defined(__mips_hard_float) # define _LIBUNWIND_CONTEXT_SIZE 67 # define _LIBUNWIND_CURSOR_SIZE 74 # else # define _LIBUNWIND_CONTEXT_SIZE 35 # define _LIBUNWIND_CURSOR_SIZE 42 # endif # elif defined(_ABI64) && _MIPS_SIM == _ABI64 # define _LIBUNWIND_TARGET_MIPS_NEWABI 1 # if defined(__mips_hard_float) # define _LIBUNWIND_CONTEXT_SIZE 67 # define _LIBUNWIND_CURSOR_SIZE 79 # else # define _LIBUNWIND_CONTEXT_SIZE 35 # define _LIBUNWIND_CURSOR_SIZE 47 # endif # else # error "Unsupported MIPS ABI and/or environment" # endif # define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_MIPS # elif defined(__sparc__) #define _LIBUNWIND_TARGET_SPARC 1 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_SPARC #define _LIBUNWIND_CONTEXT_SIZE 16 #define _LIBUNWIND_CURSOR_SIZE 23 # else # error "Unsupported architecture." # endif #else // !_LIBUNWIND_IS_NATIVE_ONLY # define _LIBUNWIND_TARGET_I386 # define _LIBUNWIND_TARGET_X86_64 1 # define _LIBUNWIND_TARGET_PPC 1 # define _LIBUNWIND_TARGET_PPC64 1 # define _LIBUNWIND_TARGET_AARCH64 1 # define _LIBUNWIND_TARGET_ARM 1 # define _LIBUNWIND_TARGET_OR1K 1 # define _LIBUNWIND_TARGET_MIPS_O32 1 # define _LIBUNWIND_TARGET_MIPS_NEWABI 1 # define _LIBUNWIND_TARGET_SPARC 1 # define _LIBUNWIND_CONTEXT_SIZE 167 # define _LIBUNWIND_CURSOR_SIZE 179 # define _LIBUNWIND_HIGHEST_DWARF_REGISTER 287 #endif // _LIBUNWIND_IS_NATIVE_ONLY #endif // ____LIBUNWIND_CONFIG_H__ Index: projects/clang900-import/contrib/libunwind/include/libunwind.h =================================================================== --- projects/clang900-import/contrib/libunwind/include/libunwind.h (revision 351403) +++ projects/clang900-import/contrib/libunwind/include/libunwind.h (revision 351404) @@ -1,933 +1,906 @@ //===---------------------------- libunwind.h -----------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // Compatible with libunwind API documented at: // http://www.nongnu.org/libunwind/man/libunwind(3).html // //===----------------------------------------------------------------------===// #ifndef __LIBUNWIND__ #define __LIBUNWIND__ #include <__libunwind_config.h> #include #include #ifdef __APPLE__ #if __clang__ #if __has_include() #include #endif #elif __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 #include #endif #ifdef __arm__ #define LIBUNWIND_AVAIL __attribute__((unavailable)) #elif defined(__OSX_AVAILABLE_STARTING) #define LIBUNWIND_AVAIL __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_5_0) #else #include #ifdef AVAILABLE_MAC_OS_X_VERSION_10_6_AND_LATER #define LIBUNWIND_AVAIL AVAILABLE_MAC_OS_X_VERSION_10_6_AND_LATER #else #define LIBUNWIND_AVAIL __attribute__((unavailable)) #endif #endif #else #define LIBUNWIND_AVAIL #endif /* error codes */ enum { UNW_ESUCCESS = 0, /* no error */ UNW_EUNSPEC = -6540, /* unspecified (general) error */ UNW_ENOMEM = -6541, /* out of memory */ UNW_EBADREG = -6542, /* bad register number */ UNW_EREADONLYREG = -6543, /* attempt to write read-only register */ UNW_ESTOPUNWIND = -6544, /* stop unwinding */ UNW_EINVALIDIP = -6545, /* invalid IP */ UNW_EBADFRAME = -6546, /* bad frame */ UNW_EINVAL = -6547, /* unsupported operation or bad value */ UNW_EBADVERSION = -6548, /* unwind info has unsupported version */ UNW_ENOINFO = -6549 /* no unwind info found */ #if defined(_LIBUNWIND_TARGET_AARCH64) && !defined(_LIBUNWIND_IS_NATIVE_ONLY) , UNW_ECROSSRASIGNING = -6550 /* cross unwind with return address signing */ #endif }; struct unw_context_t { uint64_t data[_LIBUNWIND_CONTEXT_SIZE]; }; typedef struct unw_context_t unw_context_t; struct unw_cursor_t { uint64_t data[_LIBUNWIND_CURSOR_SIZE]; }; typedef struct unw_cursor_t unw_cursor_t; typedef struct unw_addr_space *unw_addr_space_t; typedef int unw_regnum_t; typedef uintptr_t unw_word_t; -#if defined(__arm__) +#if defined(__arm__) && !defined(__ARM_DWARF_EH__) typedef uint64_t unw_fpreg_t; #else typedef double unw_fpreg_t; #endif struct unw_proc_info_t { unw_word_t start_ip; /* start address of function */ unw_word_t end_ip; /* address after end of function */ unw_word_t lsda; /* address of language specific data area, */ /* or zero if not used */ unw_word_t handler; /* personality routine, or zero if not used */ unw_word_t gp; /* not used */ unw_word_t flags; /* not used */ uint32_t format; /* compact unwind encoding, or zero if none */ uint32_t unwind_info_size; /* size of DWARF unwind info, or zero if none */ unw_word_t unwind_info; /* address of DWARF unwind info, or zero */ unw_word_t extra; /* mach_header of mach-o image containing func */ }; typedef struct unw_proc_info_t unw_proc_info_t; #ifdef __cplusplus extern "C" { #endif extern int unw_getcontext(unw_context_t *) LIBUNWIND_AVAIL; extern int unw_init_local(unw_cursor_t *, unw_context_t *) LIBUNWIND_AVAIL; extern int unw_step(unw_cursor_t *) LIBUNWIND_AVAIL; extern int unw_get_reg(unw_cursor_t *, unw_regnum_t, unw_word_t *) LIBUNWIND_AVAIL; extern int unw_get_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t *) LIBUNWIND_AVAIL; extern int unw_set_reg(unw_cursor_t *, unw_regnum_t, unw_word_t) LIBUNWIND_AVAIL; extern int unw_set_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t) LIBUNWIND_AVAIL; extern int unw_resume(unw_cursor_t *) LIBUNWIND_AVAIL; #ifdef __arm__ /* Save VFP registers in FSTMX format (instead of FSTMD). */ extern void unw_save_vfp_as_X(unw_cursor_t *) LIBUNWIND_AVAIL; #endif extern const char *unw_regname(unw_cursor_t *, unw_regnum_t) LIBUNWIND_AVAIL; extern int unw_get_proc_info(unw_cursor_t *, unw_proc_info_t *) LIBUNWIND_AVAIL; extern int unw_is_fpreg(unw_cursor_t *, unw_regnum_t) LIBUNWIND_AVAIL; extern int unw_is_signal_frame(unw_cursor_t *) LIBUNWIND_AVAIL; extern int unw_get_proc_name(unw_cursor_t *, char *, size_t, unw_word_t *) LIBUNWIND_AVAIL; //extern int unw_get_save_loc(unw_cursor_t*, int, unw_save_loc_t*); extern unw_addr_space_t unw_local_addr_space; - -#ifdef UNW_REMOTE -/* - * Mac OS X "remote" API for unwinding other processes on same machine - * - */ -extern unw_addr_space_t unw_create_addr_space_for_task(task_t); -extern void unw_destroy_addr_space(unw_addr_space_t); -extern int unw_init_remote_thread(unw_cursor_t *, unw_addr_space_t, thread_t *); -#endif /* UNW_REMOTE */ - -/* - * traditional libunwind "remote" API - * NOT IMPLEMENTED on Mac OS X - * - * extern int unw_init_remote(unw_cursor_t*, unw_addr_space_t, - * thread_t*); - * extern unw_accessors_t unw_get_accessors(unw_addr_space_t); - * extern unw_addr_space_t unw_create_addr_space(unw_accessors_t, int); - * extern void unw_flush_cache(unw_addr_space_t, unw_word_t, - * unw_word_t); - * extern int unw_set_caching_policy(unw_addr_space_t, - * unw_caching_policy_t); - * extern void _U_dyn_register(unw_dyn_info_t*); - * extern void _U_dyn_cancel(unw_dyn_info_t*); - */ #ifdef __cplusplus } #endif // architecture independent register numbers enum { UNW_REG_IP = -1, // instruction pointer UNW_REG_SP = -2, // stack pointer }; // 32-bit x86 registers enum { UNW_X86_EAX = 0, UNW_X86_ECX = 1, UNW_X86_EDX = 2, UNW_X86_EBX = 3, UNW_X86_EBP = 4, UNW_X86_ESP = 5, UNW_X86_ESI = 6, UNW_X86_EDI = 7 }; // 64-bit x86_64 registers enum { UNW_X86_64_RAX = 0, UNW_X86_64_RDX = 1, UNW_X86_64_RCX = 2, UNW_X86_64_RBX = 3, UNW_X86_64_RSI = 4, UNW_X86_64_RDI = 5, UNW_X86_64_RBP = 6, UNW_X86_64_RSP = 7, UNW_X86_64_R8 = 8, UNW_X86_64_R9 = 9, UNW_X86_64_R10 = 10, UNW_X86_64_R11 = 11, UNW_X86_64_R12 = 12, UNW_X86_64_R13 = 13, UNW_X86_64_R14 = 14, UNW_X86_64_R15 = 15, UNW_X86_64_RIP = 16, UNW_X86_64_XMM0 = 17, UNW_X86_64_XMM1 = 18, UNW_X86_64_XMM2 = 19, UNW_X86_64_XMM3 = 20, UNW_X86_64_XMM4 = 21, UNW_X86_64_XMM5 = 22, UNW_X86_64_XMM6 = 23, UNW_X86_64_XMM7 = 24, UNW_X86_64_XMM8 = 25, UNW_X86_64_XMM9 = 26, UNW_X86_64_XMM10 = 27, UNW_X86_64_XMM11 = 28, UNW_X86_64_XMM12 = 29, UNW_X86_64_XMM13 = 30, UNW_X86_64_XMM14 = 31, UNW_X86_64_XMM15 = 32, }; // 32-bit ppc register numbers enum { UNW_PPC_R0 = 0, UNW_PPC_R1 = 1, UNW_PPC_R2 = 2, UNW_PPC_R3 = 3, UNW_PPC_R4 = 4, UNW_PPC_R5 = 5, UNW_PPC_R6 = 6, UNW_PPC_R7 = 7, UNW_PPC_R8 = 8, UNW_PPC_R9 = 9, UNW_PPC_R10 = 10, UNW_PPC_R11 = 11, UNW_PPC_R12 = 12, UNW_PPC_R13 = 13, UNW_PPC_R14 = 14, UNW_PPC_R15 = 15, UNW_PPC_R16 = 16, UNW_PPC_R17 = 17, UNW_PPC_R18 = 18, UNW_PPC_R19 = 19, UNW_PPC_R20 = 20, UNW_PPC_R21 = 21, UNW_PPC_R22 = 22, UNW_PPC_R23 = 23, UNW_PPC_R24 = 24, UNW_PPC_R25 = 25, UNW_PPC_R26 = 26, UNW_PPC_R27 = 27, UNW_PPC_R28 = 28, UNW_PPC_R29 = 29, UNW_PPC_R30 = 30, UNW_PPC_R31 = 31, UNW_PPC_F0 = 32, UNW_PPC_F1 = 33, UNW_PPC_F2 = 34, UNW_PPC_F3 = 35, UNW_PPC_F4 = 36, UNW_PPC_F5 = 37, UNW_PPC_F6 = 38, UNW_PPC_F7 = 39, UNW_PPC_F8 = 40, UNW_PPC_F9 = 41, UNW_PPC_F10 = 42, UNW_PPC_F11 = 43, UNW_PPC_F12 = 44, UNW_PPC_F13 = 45, UNW_PPC_F14 = 46, UNW_PPC_F15 = 47, UNW_PPC_F16 = 48, UNW_PPC_F17 = 49, UNW_PPC_F18 = 50, UNW_PPC_F19 = 51, UNW_PPC_F20 = 52, UNW_PPC_F21 = 53, UNW_PPC_F22 = 54, UNW_PPC_F23 = 55, UNW_PPC_F24 = 56, UNW_PPC_F25 = 57, UNW_PPC_F26 = 58, UNW_PPC_F27 = 59, UNW_PPC_F28 = 60, UNW_PPC_F29 = 61, UNW_PPC_F30 = 62, UNW_PPC_F31 = 63, UNW_PPC_MQ = 64, UNW_PPC_LR = 65, UNW_PPC_CTR = 66, UNW_PPC_AP = 67, UNW_PPC_CR0 = 68, UNW_PPC_CR1 = 69, UNW_PPC_CR2 = 70, UNW_PPC_CR3 = 71, UNW_PPC_CR4 = 72, UNW_PPC_CR5 = 73, UNW_PPC_CR6 = 74, UNW_PPC_CR7 = 75, UNW_PPC_XER = 76, UNW_PPC_V0 = 77, UNW_PPC_V1 = 78, UNW_PPC_V2 = 79, UNW_PPC_V3 = 80, UNW_PPC_V4 = 81, UNW_PPC_V5 = 82, UNW_PPC_V6 = 83, UNW_PPC_V7 = 84, UNW_PPC_V8 = 85, UNW_PPC_V9 = 86, UNW_PPC_V10 = 87, UNW_PPC_V11 = 88, UNW_PPC_V12 = 89, UNW_PPC_V13 = 90, UNW_PPC_V14 = 91, UNW_PPC_V15 = 92, UNW_PPC_V16 = 93, UNW_PPC_V17 = 94, UNW_PPC_V18 = 95, UNW_PPC_V19 = 96, UNW_PPC_V20 = 97, UNW_PPC_V21 = 98, UNW_PPC_V22 = 99, UNW_PPC_V23 = 100, UNW_PPC_V24 = 101, UNW_PPC_V25 = 102, UNW_PPC_V26 = 103, UNW_PPC_V27 = 104, UNW_PPC_V28 = 105, UNW_PPC_V29 = 106, UNW_PPC_V30 = 107, UNW_PPC_V31 = 108, UNW_PPC_VRSAVE = 109, UNW_PPC_VSCR = 110, UNW_PPC_SPE_ACC = 111, UNW_PPC_SPEFSCR = 112 }; // 64-bit ppc register numbers enum { UNW_PPC64_R0 = 0, UNW_PPC64_R1 = 1, UNW_PPC64_R2 = 2, UNW_PPC64_R3 = 3, UNW_PPC64_R4 = 4, UNW_PPC64_R5 = 5, UNW_PPC64_R6 = 6, UNW_PPC64_R7 = 7, UNW_PPC64_R8 = 8, UNW_PPC64_R9 = 9, UNW_PPC64_R10 = 10, UNW_PPC64_R11 = 11, UNW_PPC64_R12 = 12, UNW_PPC64_R13 = 13, UNW_PPC64_R14 = 14, UNW_PPC64_R15 = 15, UNW_PPC64_R16 = 16, UNW_PPC64_R17 = 17, UNW_PPC64_R18 = 18, UNW_PPC64_R19 = 19, UNW_PPC64_R20 = 20, UNW_PPC64_R21 = 21, UNW_PPC64_R22 = 22, UNW_PPC64_R23 = 23, UNW_PPC64_R24 = 24, UNW_PPC64_R25 = 25, UNW_PPC64_R26 = 26, UNW_PPC64_R27 = 27, UNW_PPC64_R28 = 28, UNW_PPC64_R29 = 29, UNW_PPC64_R30 = 30, UNW_PPC64_R31 = 31, UNW_PPC64_F0 = 32, UNW_PPC64_F1 = 33, UNW_PPC64_F2 = 34, UNW_PPC64_F3 = 35, UNW_PPC64_F4 = 36, UNW_PPC64_F5 = 37, UNW_PPC64_F6 = 38, UNW_PPC64_F7 = 39, UNW_PPC64_F8 = 40, UNW_PPC64_F9 = 41, UNW_PPC64_F10 = 42, UNW_PPC64_F11 = 43, UNW_PPC64_F12 = 44, UNW_PPC64_F13 = 45, UNW_PPC64_F14 = 46, UNW_PPC64_F15 = 47, UNW_PPC64_F16 = 48, UNW_PPC64_F17 = 49, UNW_PPC64_F18 = 50, UNW_PPC64_F19 = 51, UNW_PPC64_F20 = 52, UNW_PPC64_F21 = 53, UNW_PPC64_F22 = 54, UNW_PPC64_F23 = 55, UNW_PPC64_F24 = 56, UNW_PPC64_F25 = 57, UNW_PPC64_F26 = 58, UNW_PPC64_F27 = 59, UNW_PPC64_F28 = 60, UNW_PPC64_F29 = 61, UNW_PPC64_F30 = 62, UNW_PPC64_F31 = 63, // 64: reserved UNW_PPC64_LR = 65, UNW_PPC64_CTR = 66, // 67: reserved UNW_PPC64_CR0 = 68, UNW_PPC64_CR1 = 69, UNW_PPC64_CR2 = 70, UNW_PPC64_CR3 = 71, UNW_PPC64_CR4 = 72, UNW_PPC64_CR5 = 73, UNW_PPC64_CR6 = 74, UNW_PPC64_CR7 = 75, UNW_PPC64_XER = 76, UNW_PPC64_V0 = 77, UNW_PPC64_V1 = 78, UNW_PPC64_V2 = 79, UNW_PPC64_V3 = 80, UNW_PPC64_V4 = 81, UNW_PPC64_V5 = 82, UNW_PPC64_V6 = 83, UNW_PPC64_V7 = 84, UNW_PPC64_V8 = 85, UNW_PPC64_V9 = 86, UNW_PPC64_V10 = 87, UNW_PPC64_V11 = 88, UNW_PPC64_V12 = 89, UNW_PPC64_V13 = 90, UNW_PPC64_V14 = 91, UNW_PPC64_V15 = 92, UNW_PPC64_V16 = 93, UNW_PPC64_V17 = 94, UNW_PPC64_V18 = 95, UNW_PPC64_V19 = 96, UNW_PPC64_V20 = 97, UNW_PPC64_V21 = 98, UNW_PPC64_V22 = 99, UNW_PPC64_V23 = 100, UNW_PPC64_V24 = 101, UNW_PPC64_V25 = 102, UNW_PPC64_V26 = 103, UNW_PPC64_V27 = 104, UNW_PPC64_V28 = 105, UNW_PPC64_V29 = 106, UNW_PPC64_V30 = 107, UNW_PPC64_V31 = 108, // 109, 111-113: OpenPOWER ELF V2 ABI: reserved // Borrowing VRSAVE number from PPC32. UNW_PPC64_VRSAVE = 109, UNW_PPC64_VSCR = 110, UNW_PPC64_TFHAR = 114, UNW_PPC64_TFIAR = 115, UNW_PPC64_TEXASR = 116, UNW_PPC64_VS0 = UNW_PPC64_F0, UNW_PPC64_VS1 = UNW_PPC64_F1, UNW_PPC64_VS2 = UNW_PPC64_F2, UNW_PPC64_VS3 = UNW_PPC64_F3, UNW_PPC64_VS4 = UNW_PPC64_F4, UNW_PPC64_VS5 = UNW_PPC64_F5, UNW_PPC64_VS6 = UNW_PPC64_F6, UNW_PPC64_VS7 = UNW_PPC64_F7, UNW_PPC64_VS8 = UNW_PPC64_F8, UNW_PPC64_VS9 = UNW_PPC64_F9, UNW_PPC64_VS10 = UNW_PPC64_F10, UNW_PPC64_VS11 = UNW_PPC64_F11, UNW_PPC64_VS12 = UNW_PPC64_F12, UNW_PPC64_VS13 = UNW_PPC64_F13, UNW_PPC64_VS14 = UNW_PPC64_F14, UNW_PPC64_VS15 = UNW_PPC64_F15, UNW_PPC64_VS16 = UNW_PPC64_F16, UNW_PPC64_VS17 = UNW_PPC64_F17, UNW_PPC64_VS18 = UNW_PPC64_F18, UNW_PPC64_VS19 = UNW_PPC64_F19, UNW_PPC64_VS20 = UNW_PPC64_F20, UNW_PPC64_VS21 = UNW_PPC64_F21, UNW_PPC64_VS22 = UNW_PPC64_F22, UNW_PPC64_VS23 = UNW_PPC64_F23, UNW_PPC64_VS24 = UNW_PPC64_F24, UNW_PPC64_VS25 = UNW_PPC64_F25, UNW_PPC64_VS26 = UNW_PPC64_F26, UNW_PPC64_VS27 = UNW_PPC64_F27, UNW_PPC64_VS28 = UNW_PPC64_F28, UNW_PPC64_VS29 = UNW_PPC64_F29, UNW_PPC64_VS30 = UNW_PPC64_F30, UNW_PPC64_VS31 = UNW_PPC64_F31, UNW_PPC64_VS32 = UNW_PPC64_V0, UNW_PPC64_VS33 = UNW_PPC64_V1, UNW_PPC64_VS34 = UNW_PPC64_V2, UNW_PPC64_VS35 = UNW_PPC64_V3, UNW_PPC64_VS36 = UNW_PPC64_V4, UNW_PPC64_VS37 = UNW_PPC64_V5, UNW_PPC64_VS38 = UNW_PPC64_V6, UNW_PPC64_VS39 = UNW_PPC64_V7, UNW_PPC64_VS40 = UNW_PPC64_V8, UNW_PPC64_VS41 = UNW_PPC64_V9, UNW_PPC64_VS42 = UNW_PPC64_V10, UNW_PPC64_VS43 = UNW_PPC64_V11, UNW_PPC64_VS44 = UNW_PPC64_V12, UNW_PPC64_VS45 = UNW_PPC64_V13, UNW_PPC64_VS46 = UNW_PPC64_V14, UNW_PPC64_VS47 = UNW_PPC64_V15, UNW_PPC64_VS48 = UNW_PPC64_V16, UNW_PPC64_VS49 = UNW_PPC64_V17, UNW_PPC64_VS50 = UNW_PPC64_V18, UNW_PPC64_VS51 = UNW_PPC64_V19, UNW_PPC64_VS52 = UNW_PPC64_V20, UNW_PPC64_VS53 = UNW_PPC64_V21, UNW_PPC64_VS54 = UNW_PPC64_V22, UNW_PPC64_VS55 = UNW_PPC64_V23, UNW_PPC64_VS56 = UNW_PPC64_V24, UNW_PPC64_VS57 = UNW_PPC64_V25, UNW_PPC64_VS58 = UNW_PPC64_V26, UNW_PPC64_VS59 = UNW_PPC64_V27, UNW_PPC64_VS60 = UNW_PPC64_V28, UNW_PPC64_VS61 = UNW_PPC64_V29, UNW_PPC64_VS62 = UNW_PPC64_V30, UNW_PPC64_VS63 = UNW_PPC64_V31 }; // 64-bit ARM64 registers enum { UNW_ARM64_X0 = 0, UNW_ARM64_X1 = 1, UNW_ARM64_X2 = 2, UNW_ARM64_X3 = 3, UNW_ARM64_X4 = 4, UNW_ARM64_X5 = 5, UNW_ARM64_X6 = 6, UNW_ARM64_X7 = 7, UNW_ARM64_X8 = 8, UNW_ARM64_X9 = 9, UNW_ARM64_X10 = 10, UNW_ARM64_X11 = 11, UNW_ARM64_X12 = 12, UNW_ARM64_X13 = 13, UNW_ARM64_X14 = 14, UNW_ARM64_X15 = 15, UNW_ARM64_X16 = 16, UNW_ARM64_X17 = 17, UNW_ARM64_X18 = 18, UNW_ARM64_X19 = 19, UNW_ARM64_X20 = 20, UNW_ARM64_X21 = 21, UNW_ARM64_X22 = 22, UNW_ARM64_X23 = 23, UNW_ARM64_X24 = 24, UNW_ARM64_X25 = 25, UNW_ARM64_X26 = 26, UNW_ARM64_X27 = 27, UNW_ARM64_X28 = 28, UNW_ARM64_X29 = 29, UNW_ARM64_FP = 29, UNW_ARM64_X30 = 30, UNW_ARM64_LR = 30, UNW_ARM64_X31 = 31, UNW_ARM64_SP = 31, // reserved block UNW_ARM64_RA_SIGN_STATE = 34, // reserved block UNW_ARM64_D0 = 64, UNW_ARM64_D1 = 65, UNW_ARM64_D2 = 66, UNW_ARM64_D3 = 67, UNW_ARM64_D4 = 68, UNW_ARM64_D5 = 69, UNW_ARM64_D6 = 70, UNW_ARM64_D7 = 71, UNW_ARM64_D8 = 72, UNW_ARM64_D9 = 73, UNW_ARM64_D10 = 74, UNW_ARM64_D11 = 75, UNW_ARM64_D12 = 76, UNW_ARM64_D13 = 77, UNW_ARM64_D14 = 78, UNW_ARM64_D15 = 79, UNW_ARM64_D16 = 80, UNW_ARM64_D17 = 81, UNW_ARM64_D18 = 82, UNW_ARM64_D19 = 83, UNW_ARM64_D20 = 84, UNW_ARM64_D21 = 85, UNW_ARM64_D22 = 86, UNW_ARM64_D23 = 87, UNW_ARM64_D24 = 88, UNW_ARM64_D25 = 89, UNW_ARM64_D26 = 90, UNW_ARM64_D27 = 91, UNW_ARM64_D28 = 92, UNW_ARM64_D29 = 93, UNW_ARM64_D30 = 94, UNW_ARM64_D31 = 95, }; // 32-bit ARM registers. Numbers match DWARF for ARM spec #3.1 Table 1. // Naming scheme uses recommendations given in Note 4 for VFP-v2 and VFP-v3. // In this scheme, even though the 64-bit floating point registers D0-D31 // overlap physically with the 32-bit floating pointer registers S0-S31, // they are given a non-overlapping range of register numbers. // // Commented out ranges are not preserved during unwinding. enum { UNW_ARM_R0 = 0, UNW_ARM_R1 = 1, UNW_ARM_R2 = 2, UNW_ARM_R3 = 3, UNW_ARM_R4 = 4, UNW_ARM_R5 = 5, UNW_ARM_R6 = 6, UNW_ARM_R7 = 7, UNW_ARM_R8 = 8, UNW_ARM_R9 = 9, UNW_ARM_R10 = 10, UNW_ARM_R11 = 11, UNW_ARM_R12 = 12, UNW_ARM_SP = 13, // Logical alias for UNW_REG_SP UNW_ARM_R13 = 13, UNW_ARM_LR = 14, UNW_ARM_R14 = 14, UNW_ARM_IP = 15, // Logical alias for UNW_REG_IP UNW_ARM_R15 = 15, // 16-63 -- OBSOLETE. Used in VFP1 to represent both S0-S31 and D0-D31. UNW_ARM_S0 = 64, UNW_ARM_S1 = 65, UNW_ARM_S2 = 66, UNW_ARM_S3 = 67, UNW_ARM_S4 = 68, UNW_ARM_S5 = 69, UNW_ARM_S6 = 70, UNW_ARM_S7 = 71, UNW_ARM_S8 = 72, UNW_ARM_S9 = 73, UNW_ARM_S10 = 74, UNW_ARM_S11 = 75, UNW_ARM_S12 = 76, UNW_ARM_S13 = 77, UNW_ARM_S14 = 78, UNW_ARM_S15 = 79, UNW_ARM_S16 = 80, UNW_ARM_S17 = 81, UNW_ARM_S18 = 82, UNW_ARM_S19 = 83, UNW_ARM_S20 = 84, UNW_ARM_S21 = 85, UNW_ARM_S22 = 86, UNW_ARM_S23 = 87, UNW_ARM_S24 = 88, UNW_ARM_S25 = 89, UNW_ARM_S26 = 90, UNW_ARM_S27 = 91, UNW_ARM_S28 = 92, UNW_ARM_S29 = 93, UNW_ARM_S30 = 94, UNW_ARM_S31 = 95, // 96-103 -- OBSOLETE. F0-F7. Used by the FPA system. Superseded by VFP. // 104-111 -- wCGR0-wCGR7, ACC0-ACC7 (Intel wireless MMX) UNW_ARM_WR0 = 112, UNW_ARM_WR1 = 113, UNW_ARM_WR2 = 114, UNW_ARM_WR3 = 115, UNW_ARM_WR4 = 116, UNW_ARM_WR5 = 117, UNW_ARM_WR6 = 118, UNW_ARM_WR7 = 119, UNW_ARM_WR8 = 120, UNW_ARM_WR9 = 121, UNW_ARM_WR10 = 122, UNW_ARM_WR11 = 123, UNW_ARM_WR12 = 124, UNW_ARM_WR13 = 125, UNW_ARM_WR14 = 126, UNW_ARM_WR15 = 127, // 128-133 -- SPSR, SPSR_{FIQ|IRQ|ABT|UND|SVC} // 134-143 -- Reserved // 144-150 -- R8_USR-R14_USR // 151-157 -- R8_FIQ-R14_FIQ // 158-159 -- R13_IRQ-R14_IRQ // 160-161 -- R13_ABT-R14_ABT // 162-163 -- R13_UND-R14_UND // 164-165 -- R13_SVC-R14_SVC // 166-191 -- Reserved UNW_ARM_WC0 = 192, UNW_ARM_WC1 = 193, UNW_ARM_WC2 = 194, UNW_ARM_WC3 = 195, // 196-199 -- wC4-wC7 (Intel wireless MMX control) // 200-255 -- Reserved UNW_ARM_D0 = 256, UNW_ARM_D1 = 257, UNW_ARM_D2 = 258, UNW_ARM_D3 = 259, UNW_ARM_D4 = 260, UNW_ARM_D5 = 261, UNW_ARM_D6 = 262, UNW_ARM_D7 = 263, UNW_ARM_D8 = 264, UNW_ARM_D9 = 265, UNW_ARM_D10 = 266, UNW_ARM_D11 = 267, UNW_ARM_D12 = 268, UNW_ARM_D13 = 269, UNW_ARM_D14 = 270, UNW_ARM_D15 = 271, UNW_ARM_D16 = 272, UNW_ARM_D17 = 273, UNW_ARM_D18 = 274, UNW_ARM_D19 = 275, UNW_ARM_D20 = 276, UNW_ARM_D21 = 277, UNW_ARM_D22 = 278, UNW_ARM_D23 = 279, UNW_ARM_D24 = 280, UNW_ARM_D25 = 281, UNW_ARM_D26 = 282, UNW_ARM_D27 = 283, UNW_ARM_D28 = 284, UNW_ARM_D29 = 285, UNW_ARM_D30 = 286, UNW_ARM_D31 = 287, // 288-319 -- Reserved for VFP/Neon // 320-8191 -- Reserved // 8192-16383 -- Unspecified vendor co-processor register. }; // OpenRISC1000 register numbers enum { UNW_OR1K_R0 = 0, UNW_OR1K_R1 = 1, UNW_OR1K_R2 = 2, UNW_OR1K_R3 = 3, UNW_OR1K_R4 = 4, UNW_OR1K_R5 = 5, UNW_OR1K_R6 = 6, UNW_OR1K_R7 = 7, UNW_OR1K_R8 = 8, UNW_OR1K_R9 = 9, UNW_OR1K_R10 = 10, UNW_OR1K_R11 = 11, UNW_OR1K_R12 = 12, UNW_OR1K_R13 = 13, UNW_OR1K_R14 = 14, UNW_OR1K_R15 = 15, UNW_OR1K_R16 = 16, UNW_OR1K_R17 = 17, UNW_OR1K_R18 = 18, UNW_OR1K_R19 = 19, UNW_OR1K_R20 = 20, UNW_OR1K_R21 = 21, UNW_OR1K_R22 = 22, UNW_OR1K_R23 = 23, UNW_OR1K_R24 = 24, UNW_OR1K_R25 = 25, UNW_OR1K_R26 = 26, UNW_OR1K_R27 = 27, UNW_OR1K_R28 = 28, UNW_OR1K_R29 = 29, UNW_OR1K_R30 = 30, UNW_OR1K_R31 = 31, UNW_OR1K_EPCR = 32, }; // 64-bit RISC-V registers enum { UNW_RISCV_X0 = 0, UNW_RISCV_X1 = 1, UNW_RISCV_RA = 1, UNW_RISCV_X2 = 2, UNW_RISCV_SP = 2, UNW_RISCV_X3 = 3, UNW_RISCV_X4 = 4, UNW_RISCV_X5 = 5, UNW_RISCV_X6 = 6, UNW_RISCV_X7 = 7, UNW_RISCV_X8 = 8, UNW_RISCV_X9 = 9, UNW_RISCV_X10 = 10, UNW_RISCV_X11 = 11, UNW_RISCV_X12 = 12, UNW_RISCV_X13 = 13, UNW_RISCV_X14 = 14, UNW_RISCV_X15 = 15, UNW_RISCV_X16 = 16, UNW_RISCV_X17 = 17, UNW_RISCV_X18 = 18, UNW_RISCV_X19 = 19, UNW_RISCV_X20 = 20, UNW_RISCV_X21 = 21, UNW_RISCV_X22 = 22, UNW_RISCV_X23 = 23, UNW_RISCV_X24 = 24, UNW_RISCV_X25 = 25, UNW_RISCV_X26 = 26, UNW_RISCV_X27 = 27, UNW_RISCV_X28 = 28, UNW_RISCV_X29 = 29, UNW_RISCV_X30 = 30, UNW_RISCV_X31 = 31, // reserved block UNW_RISCV_D0 = 64, UNW_RISCV_D1 = 65, UNW_RISCV_D2 = 66, UNW_RISCV_D3 = 67, UNW_RISCV_D4 = 68, UNW_RISCV_D5 = 69, UNW_RISCV_D6 = 70, UNW_RISCV_D7 = 71, UNW_RISCV_D8 = 72, UNW_RISCV_D9 = 73, UNW_RISCV_D10 = 74, UNW_RISCV_D11 = 75, UNW_RISCV_D12 = 76, UNW_RISCV_D13 = 77, UNW_RISCV_D14 = 78, UNW_RISCV_D15 = 79, UNW_RISCV_D16 = 80, UNW_RISCV_D17 = 81, UNW_RISCV_D18 = 82, UNW_RISCV_D19 = 83, UNW_RISCV_D20 = 84, UNW_RISCV_D21 = 85, UNW_RISCV_D22 = 86, UNW_RISCV_D23 = 87, UNW_RISCV_D24 = 88, UNW_RISCV_D25 = 89, UNW_RISCV_D26 = 90, UNW_RISCV_D27 = 91, UNW_RISCV_D28 = 92, UNW_RISCV_D29 = 93, UNW_RISCV_D30 = 94, UNW_RISCV_D31 = 95, }; // MIPS registers enum { UNW_MIPS_R0 = 0, UNW_MIPS_R1 = 1, UNW_MIPS_R2 = 2, UNW_MIPS_R3 = 3, UNW_MIPS_R4 = 4, UNW_MIPS_R5 = 5, UNW_MIPS_R6 = 6, UNW_MIPS_R7 = 7, UNW_MIPS_R8 = 8, UNW_MIPS_R9 = 9, UNW_MIPS_R10 = 10, UNW_MIPS_R11 = 11, UNW_MIPS_R12 = 12, UNW_MIPS_R13 = 13, UNW_MIPS_R14 = 14, UNW_MIPS_R15 = 15, UNW_MIPS_R16 = 16, UNW_MIPS_R17 = 17, UNW_MIPS_R18 = 18, UNW_MIPS_R19 = 19, UNW_MIPS_R20 = 20, UNW_MIPS_R21 = 21, UNW_MIPS_R22 = 22, UNW_MIPS_R23 = 23, UNW_MIPS_R24 = 24, UNW_MIPS_R25 = 25, UNW_MIPS_R26 = 26, UNW_MIPS_R27 = 27, UNW_MIPS_R28 = 28, UNW_MIPS_R29 = 29, UNW_MIPS_R30 = 30, UNW_MIPS_R31 = 31, UNW_MIPS_F0 = 32, UNW_MIPS_F1 = 33, UNW_MIPS_F2 = 34, UNW_MIPS_F3 = 35, UNW_MIPS_F4 = 36, UNW_MIPS_F5 = 37, UNW_MIPS_F6 = 38, UNW_MIPS_F7 = 39, UNW_MIPS_F8 = 40, UNW_MIPS_F9 = 41, UNW_MIPS_F10 = 42, UNW_MIPS_F11 = 43, UNW_MIPS_F12 = 44, UNW_MIPS_F13 = 45, UNW_MIPS_F14 = 46, UNW_MIPS_F15 = 47, UNW_MIPS_F16 = 48, UNW_MIPS_F17 = 49, UNW_MIPS_F18 = 50, UNW_MIPS_F19 = 51, UNW_MIPS_F20 = 52, UNW_MIPS_F21 = 53, UNW_MIPS_F22 = 54, UNW_MIPS_F23 = 55, UNW_MIPS_F24 = 56, UNW_MIPS_F25 = 57, UNW_MIPS_F26 = 58, UNW_MIPS_F27 = 59, UNW_MIPS_F28 = 60, UNW_MIPS_F29 = 61, UNW_MIPS_F30 = 62, UNW_MIPS_F31 = 63, UNW_MIPS_HI = 64, UNW_MIPS_LO = 65, }; // SPARC registers enum { UNW_SPARC_G0 = 0, UNW_SPARC_G1 = 1, UNW_SPARC_G2 = 2, UNW_SPARC_G3 = 3, UNW_SPARC_G4 = 4, UNW_SPARC_G5 = 5, UNW_SPARC_G6 = 6, UNW_SPARC_G7 = 7, UNW_SPARC_O0 = 8, UNW_SPARC_O1 = 9, UNW_SPARC_O2 = 10, UNW_SPARC_O3 = 11, UNW_SPARC_O4 = 12, UNW_SPARC_O5 = 13, UNW_SPARC_O6 = 14, UNW_SPARC_O7 = 15, UNW_SPARC_L0 = 16, UNW_SPARC_L1 = 17, UNW_SPARC_L2 = 18, UNW_SPARC_L3 = 19, UNW_SPARC_L4 = 20, UNW_SPARC_L5 = 21, UNW_SPARC_L6 = 22, UNW_SPARC_L7 = 23, UNW_SPARC_I0 = 24, UNW_SPARC_I1 = 25, UNW_SPARC_I2 = 26, UNW_SPARC_I3 = 27, UNW_SPARC_I4 = 28, UNW_SPARC_I5 = 29, UNW_SPARC_I6 = 30, UNW_SPARC_I7 = 31, }; #endif Index: projects/clang900-import/contrib/libunwind/include/mach-o/compact_unwind_encoding.h =================================================================== --- projects/clang900-import/contrib/libunwind/include/mach-o/compact_unwind_encoding.h (revision 351403) +++ projects/clang900-import/contrib/libunwind/include/mach-o/compact_unwind_encoding.h (revision 351404) @@ -1,478 +1,477 @@ //===------------------ mach-o/compact_unwind_encoding.h ------------------===// // -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // // // Darwin's alternative to DWARF based unwind encodings. // //===----------------------------------------------------------------------===// #ifndef __COMPACT_UNWIND_ENCODING__ #define __COMPACT_UNWIND_ENCODING__ #include // // Compilers can emit standard DWARF FDEs in the __TEXT,__eh_frame section // of object files. Or compilers can emit compact unwind information in // the __LD,__compact_unwind section. // // When the linker creates a final linked image, it will create a // __TEXT,__unwind_info section. This section is a small and fast way for the // runtime to access unwind info for any given function. If the compiler // emitted compact unwind info for the function, that compact unwind info will // be encoded in the __TEXT,__unwind_info section. If the compiler emitted // DWARF unwind info, the __TEXT,__unwind_info section will contain the offset // of the FDE in the __TEXT,__eh_frame section in the final linked image. // // Note: Previously, the linker would transform some DWARF unwind infos into // compact unwind info. But that is fragile and no longer done. // // The compact unwind endoding is a 32-bit value which encoded in an // architecture specific way, which registers to restore from where, and how // to unwind out of the function. // typedef uint32_t compact_unwind_encoding_t; // architecture independent bits enum { UNWIND_IS_NOT_FUNCTION_START = 0x80000000, UNWIND_HAS_LSDA = 0x40000000, UNWIND_PERSONALITY_MASK = 0x30000000, }; // // x86 // // 1-bit: start // 1-bit: has lsda // 2-bit: personality index // // 4-bits: 0=old, 1=ebp based, 2=stack-imm, 3=stack-ind, 4=DWARF // ebp based: // 15-bits (5*3-bits per reg) register permutation // 8-bits for stack offset // frameless: // 8-bits stack size // 3-bits stack adjust // 3-bits register count // 10-bits register permutation // enum { UNWIND_X86_MODE_MASK = 0x0F000000, UNWIND_X86_MODE_EBP_FRAME = 0x01000000, UNWIND_X86_MODE_STACK_IMMD = 0x02000000, UNWIND_X86_MODE_STACK_IND = 0x03000000, UNWIND_X86_MODE_DWARF = 0x04000000, UNWIND_X86_EBP_FRAME_REGISTERS = 0x00007FFF, UNWIND_X86_EBP_FRAME_OFFSET = 0x00FF0000, UNWIND_X86_FRAMELESS_STACK_SIZE = 0x00FF0000, UNWIND_X86_FRAMELESS_STACK_ADJUST = 0x0000E000, UNWIND_X86_FRAMELESS_STACK_REG_COUNT = 0x00001C00, UNWIND_X86_FRAMELESS_STACK_REG_PERMUTATION = 0x000003FF, UNWIND_X86_DWARF_SECTION_OFFSET = 0x00FFFFFF, }; enum { UNWIND_X86_REG_NONE = 0, UNWIND_X86_REG_EBX = 1, UNWIND_X86_REG_ECX = 2, UNWIND_X86_REG_EDX = 3, UNWIND_X86_REG_EDI = 4, UNWIND_X86_REG_ESI = 5, UNWIND_X86_REG_EBP = 6, }; // // For x86 there are four modes for the compact unwind encoding: // UNWIND_X86_MODE_EBP_FRAME: // EBP based frame where EBP is push on stack immediately after return address, // then ESP is moved to EBP. Thus, to unwind ESP is restored with the current // EPB value, then EBP is restored by popping off the stack, and the return // is done by popping the stack once more into the pc. // All non-volatile registers that need to be restored must have been saved // in a small range in the stack that starts EBP-4 to EBP-1020. The offset/4 // is encoded in the UNWIND_X86_EBP_FRAME_OFFSET bits. The registers saved // are encoded in the UNWIND_X86_EBP_FRAME_REGISTERS bits as five 3-bit entries. // Each entry contains which register to restore. // UNWIND_X86_MODE_STACK_IMMD: // A "frameless" (EBP not used as frame pointer) function with a small // constant stack size. To return, a constant (encoded in the compact // unwind encoding) is added to the ESP. Then the return is done by // popping the stack into the pc. // All non-volatile registers that need to be restored must have been saved // on the stack immediately after the return address. The stack_size/4 is // encoded in the UNWIND_X86_FRAMELESS_STACK_SIZE (max stack size is 1024). // The number of registers saved is encoded in UNWIND_X86_FRAMELESS_STACK_REG_COUNT. // UNWIND_X86_FRAMELESS_STACK_REG_PERMUTATION constains which registers were // saved and their order. // UNWIND_X86_MODE_STACK_IND: // A "frameless" (EBP not used as frame pointer) function large constant // stack size. This case is like the previous, except the stack size is too // large to encode in the compact unwind encoding. Instead it requires that // the function contains "subl $nnnnnnnn,ESP" in its prolog. The compact // encoding contains the offset to the nnnnnnnn value in the function in // UNWIND_X86_FRAMELESS_STACK_SIZE. // UNWIND_X86_MODE_DWARF: // No compact unwind encoding is available. Instead the low 24-bits of the // compact encoding is the offset of the DWARF FDE in the __eh_frame section. // This mode is never used in object files. It is only generated by the // linker in final linked images which have only DWARF unwind info for a // function. // // The permutation encoding is a Lehmer code sequence encoded into a // single variable-base number so we can encode the ordering of up to // six registers in a 10-bit space. // // The following is the algorithm used to create the permutation encoding used // with frameless stacks. It is passed the number of registers to be saved and // an array of the register numbers saved. // //uint32_t permute_encode(uint32_t registerCount, const uint32_t registers[6]) //{ // uint32_t renumregs[6]; // for (int i=6-registerCount; i < 6; ++i) { // int countless = 0; // for (int j=6-registerCount; j < i; ++j) { // if ( registers[j] < registers[i] ) // ++countless; // } // renumregs[i] = registers[i] - countless -1; // } // uint32_t permutationEncoding = 0; // switch ( registerCount ) { // case 6: // permutationEncoding |= (120*renumregs[0] + 24*renumregs[1] // + 6*renumregs[2] + 2*renumregs[3] // + renumregs[4]); // break; // case 5: // permutationEncoding |= (120*renumregs[1] + 24*renumregs[2] // + 6*renumregs[3] + 2*renumregs[4] // + renumregs[5]); // break; // case 4: // permutationEncoding |= (60*renumregs[2] + 12*renumregs[3] // + 3*renumregs[4] + renumregs[5]); // break; // case 3: // permutationEncoding |= (20*renumregs[3] + 4*renumregs[4] // + renumregs[5]); // break; // case 2: // permutationEncoding |= (5*renumregs[4] + renumregs[5]); // break; // case 1: // permutationEncoding |= (renumregs[5]); // break; // } // return permutationEncoding; //} // // // x86_64 // // 1-bit: start // 1-bit: has lsda // 2-bit: personality index // // 4-bits: 0=old, 1=rbp based, 2=stack-imm, 3=stack-ind, 4=DWARF // rbp based: // 15-bits (5*3-bits per reg) register permutation // 8-bits for stack offset // frameless: // 8-bits stack size // 3-bits stack adjust // 3-bits register count // 10-bits register permutation // enum { UNWIND_X86_64_MODE_MASK = 0x0F000000, UNWIND_X86_64_MODE_RBP_FRAME = 0x01000000, UNWIND_X86_64_MODE_STACK_IMMD = 0x02000000, UNWIND_X86_64_MODE_STACK_IND = 0x03000000, UNWIND_X86_64_MODE_DWARF = 0x04000000, UNWIND_X86_64_RBP_FRAME_REGISTERS = 0x00007FFF, UNWIND_X86_64_RBP_FRAME_OFFSET = 0x00FF0000, UNWIND_X86_64_FRAMELESS_STACK_SIZE = 0x00FF0000, UNWIND_X86_64_FRAMELESS_STACK_ADJUST = 0x0000E000, UNWIND_X86_64_FRAMELESS_STACK_REG_COUNT = 0x00001C00, UNWIND_X86_64_FRAMELESS_STACK_REG_PERMUTATION = 0x000003FF, UNWIND_X86_64_DWARF_SECTION_OFFSET = 0x00FFFFFF, }; enum { UNWIND_X86_64_REG_NONE = 0, UNWIND_X86_64_REG_RBX = 1, UNWIND_X86_64_REG_R12 = 2, UNWIND_X86_64_REG_R13 = 3, UNWIND_X86_64_REG_R14 = 4, UNWIND_X86_64_REG_R15 = 5, UNWIND_X86_64_REG_RBP = 6, }; // // For x86_64 there are four modes for the compact unwind encoding: // UNWIND_X86_64_MODE_RBP_FRAME: // RBP based frame where RBP is push on stack immediately after return address, // then RSP is moved to RBP. Thus, to unwind RSP is restored with the current // EPB value, then RBP is restored by popping off the stack, and the return // is done by popping the stack once more into the pc. // All non-volatile registers that need to be restored must have been saved // in a small range in the stack that starts RBP-8 to RBP-2040. The offset/8 // is encoded in the UNWIND_X86_64_RBP_FRAME_OFFSET bits. The registers saved // are encoded in the UNWIND_X86_64_RBP_FRAME_REGISTERS bits as five 3-bit entries. // Each entry contains which register to restore. // UNWIND_X86_64_MODE_STACK_IMMD: // A "frameless" (RBP not used as frame pointer) function with a small // constant stack size. To return, a constant (encoded in the compact // unwind encoding) is added to the RSP. Then the return is done by // popping the stack into the pc. // All non-volatile registers that need to be restored must have been saved // on the stack immediately after the return address. The stack_size/8 is // encoded in the UNWIND_X86_64_FRAMELESS_STACK_SIZE (max stack size is 2048). // The number of registers saved is encoded in UNWIND_X86_64_FRAMELESS_STACK_REG_COUNT. // UNWIND_X86_64_FRAMELESS_STACK_REG_PERMUTATION constains which registers were // saved and their order. // UNWIND_X86_64_MODE_STACK_IND: // A "frameless" (RBP not used as frame pointer) function large constant // stack size. This case is like the previous, except the stack size is too // large to encode in the compact unwind encoding. Instead it requires that // the function contains "subq $nnnnnnnn,RSP" in its prolog. The compact // encoding contains the offset to the nnnnnnnn value in the function in // UNWIND_X86_64_FRAMELESS_STACK_SIZE. // UNWIND_X86_64_MODE_DWARF: // No compact unwind encoding is available. Instead the low 24-bits of the // compact encoding is the offset of the DWARF FDE in the __eh_frame section. // This mode is never used in object files. It is only generated by the // linker in final linked images which have only DWARF unwind info for a // function. // // ARM64 // // 1-bit: start // 1-bit: has lsda // 2-bit: personality index // // 4-bits: 4=frame-based, 3=DWARF, 2=frameless // frameless: // 12-bits of stack size // frame-based: // 4-bits D reg pairs saved // 5-bits X reg pairs saved // DWARF: // 24-bits offset of DWARF FDE in __eh_frame section // enum { UNWIND_ARM64_MODE_MASK = 0x0F000000, UNWIND_ARM64_MODE_FRAMELESS = 0x02000000, UNWIND_ARM64_MODE_DWARF = 0x03000000, UNWIND_ARM64_MODE_FRAME = 0x04000000, UNWIND_ARM64_FRAME_X19_X20_PAIR = 0x00000001, UNWIND_ARM64_FRAME_X21_X22_PAIR = 0x00000002, UNWIND_ARM64_FRAME_X23_X24_PAIR = 0x00000004, UNWIND_ARM64_FRAME_X25_X26_PAIR = 0x00000008, UNWIND_ARM64_FRAME_X27_X28_PAIR = 0x00000010, UNWIND_ARM64_FRAME_D8_D9_PAIR = 0x00000100, UNWIND_ARM64_FRAME_D10_D11_PAIR = 0x00000200, UNWIND_ARM64_FRAME_D12_D13_PAIR = 0x00000400, UNWIND_ARM64_FRAME_D14_D15_PAIR = 0x00000800, UNWIND_ARM64_FRAMELESS_STACK_SIZE_MASK = 0x00FFF000, UNWIND_ARM64_DWARF_SECTION_OFFSET = 0x00FFFFFF, }; // For arm64 there are three modes for the compact unwind encoding: // UNWIND_ARM64_MODE_FRAME: // This is a standard arm64 prolog where FP/LR are immediately pushed on the // stack, then SP is copied to FP. If there are any non-volatile registers // saved, then are copied into the stack frame in pairs in a contiguous // range right below the saved FP/LR pair. Any subset of the five X pairs // and four D pairs can be saved, but the memory layout must be in register // number order. // UNWIND_ARM64_MODE_FRAMELESS: // A "frameless" leaf function, where FP/LR are not saved. The return address // remains in LR throughout the function. If any non-volatile registers // are saved, they must be pushed onto the stack before any stack space is // allocated for local variables. The stack sized (including any saved // non-volatile registers) divided by 16 is encoded in the bits // UNWIND_ARM64_FRAMELESS_STACK_SIZE_MASK. // UNWIND_ARM64_MODE_DWARF: // No compact unwind encoding is available. Instead the low 24-bits of the // compact encoding is the offset of the DWARF FDE in the __eh_frame section. // This mode is never used in object files. It is only generated by the // linker in final linked images which have only DWARF unwind info for a // function. // //////////////////////////////////////////////////////////////////////////////// // // Relocatable Object Files: __LD,__compact_unwind // //////////////////////////////////////////////////////////////////////////////// // // A compiler can generated compact unwind information for a function by adding // a "row" to the __LD,__compact_unwind section. This section has the // S_ATTR_DEBUG bit set, so the section will be ignored by older linkers. // It is removed by the new linker, so never ends up in final executables. // This section is a table, initially with one row per function (that needs // unwind info). The table columns and some conceptual entries are: // // range-start pointer to start of function/range // range-length // compact-unwind-encoding 32-bit encoding // personality-function or zero if no personality function // lsda or zero if no LSDA data // // The length and encoding fields are 32-bits. The other are all pointer sized. // // In x86_64 assembly, these entry would look like: // // .section __LD,__compact_unwind,regular,debug // // #compact unwind for _foo // .quad _foo // .set L1,LfooEnd-_foo // .long L1 // .long 0x01010001 // .quad 0 // .quad 0 // // #compact unwind for _bar // .quad _bar // .set L2,LbarEnd-_bar // .long L2 // .long 0x01020011 // .quad __gxx_personality // .quad except_tab1 // // // Notes: There is no need for any labels in the the __compact_unwind section. // The use of the .set directive is to force the evaluation of the // range-length at assembly time, instead of generating relocations. // // To support future compiler optimizations where which non-volatile registers // are saved changes within a function (e.g. delay saving non-volatiles until // necessary), there can by multiple lines in the __compact_unwind table for one // function, each with a different (non-overlapping) range and each with // different compact unwind encodings that correspond to the non-volatiles // saved at that range of the function. // // If a particular function is so wacky that there is no compact unwind way // to encode it, then the compiler can emit traditional DWARF unwind info. // The runtime will use which ever is available. // // Runtime support for compact unwind encodings are only available on 10.6 // and later. So, the compiler should not generate it when targeting pre-10.6. //////////////////////////////////////////////////////////////////////////////// // // Final Linked Images: __TEXT,__unwind_info // //////////////////////////////////////////////////////////////////////////////// // // The __TEXT,__unwind_info section is laid out for an efficient two level lookup. // The header of the section contains a coarse index that maps function address // to the page (4096 byte block) containing the unwind info for that function. // #define UNWIND_SECTION_VERSION 1 struct unwind_info_section_header { uint32_t version; // UNWIND_SECTION_VERSION uint32_t commonEncodingsArraySectionOffset; uint32_t commonEncodingsArrayCount; uint32_t personalityArraySectionOffset; uint32_t personalityArrayCount; uint32_t indexSectionOffset; uint32_t indexCount; // compact_unwind_encoding_t[] // uint32_t personalities[] // unwind_info_section_header_index_entry[] // unwind_info_section_header_lsda_index_entry[] }; struct unwind_info_section_header_index_entry { uint32_t functionOffset; uint32_t secondLevelPagesSectionOffset; // section offset to start of regular or compress page uint32_t lsdaIndexArraySectionOffset; // section offset to start of lsda_index array for this range }; struct unwind_info_section_header_lsda_index_entry { uint32_t functionOffset; uint32_t lsdaOffset; }; // // There are two kinds of second level index pages: regular and compressed. // A compressed page can hold up to 1021 entries, but it cannot be used // if too many different encoding types are used. The regular page holds // 511 entries. // struct unwind_info_regular_second_level_entry { uint32_t functionOffset; compact_unwind_encoding_t encoding; }; #define UNWIND_SECOND_LEVEL_REGULAR 2 struct unwind_info_regular_second_level_page_header { uint32_t kind; // UNWIND_SECOND_LEVEL_REGULAR uint16_t entryPageOffset; uint16_t entryCount; // entry array }; #define UNWIND_SECOND_LEVEL_COMPRESSED 3 struct unwind_info_compressed_second_level_page_header { uint32_t kind; // UNWIND_SECOND_LEVEL_COMPRESSED uint16_t entryPageOffset; uint16_t entryCount; uint16_t encodingsPageOffset; uint16_t encodingsCount; // 32-bit entry array // encodings array }; #define UNWIND_INFO_COMPRESSED_ENTRY_FUNC_OFFSET(entry) (entry & 0x00FFFFFF) #define UNWIND_INFO_COMPRESSED_ENTRY_ENCODING_INDEX(entry) ((entry >> 24) & 0xFF) #endif Index: projects/clang900-import/contrib/libunwind/include/unwind.h =================================================================== --- projects/clang900-import/contrib/libunwind/include/unwind.h (revision 351403) +++ projects/clang900-import/contrib/libunwind/include/unwind.h (revision 351404) @@ -1,401 +1,400 @@ //===------------------------------- unwind.h -----------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // C++ ABI Level 1 ABI documented at: -// http://mentorembedded.github.io/cxx-abi/abi-eh.html +// https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html // //===----------------------------------------------------------------------===// #ifndef __UNWIND_H__ #define __UNWIND_H__ #include <__libunwind_config.h> #include #include #if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__) && defined(_WIN32) #include #include #endif #if defined(__APPLE__) #define LIBUNWIND_UNAVAIL __attribute__ (( unavailable )) #else #define LIBUNWIND_UNAVAIL #endif typedef enum { _URC_NO_REASON = 0, _URC_OK = 0, _URC_FOREIGN_EXCEPTION_CAUGHT = 1, _URC_FATAL_PHASE2_ERROR = 2, _URC_FATAL_PHASE1_ERROR = 3, _URC_NORMAL_STOP = 4, _URC_END_OF_STACK = 5, _URC_HANDLER_FOUND = 6, _URC_INSTALL_CONTEXT = 7, _URC_CONTINUE_UNWIND = 8, #if defined(_LIBUNWIND_ARM_EHABI) _URC_FAILURE = 9 #endif } _Unwind_Reason_Code; typedef enum { _UA_SEARCH_PHASE = 1, _UA_CLEANUP_PHASE = 2, _UA_HANDLER_FRAME = 4, _UA_FORCE_UNWIND = 8, _UA_END_OF_STACK = 16 // gcc extension to C++ ABI } _Unwind_Action; typedef struct _Unwind_Context _Unwind_Context; // opaque #if defined(_LIBUNWIND_ARM_EHABI) typedef uint32_t _Unwind_State; static const _Unwind_State _US_VIRTUAL_UNWIND_FRAME = 0; static const _Unwind_State _US_UNWIND_FRAME_STARTING = 1; static const _Unwind_State _US_UNWIND_FRAME_RESUME = 2; static const _Unwind_State _US_ACTION_MASK = 3; /* Undocumented flag for force unwinding. */ static const _Unwind_State _US_FORCE_UNWIND = 8; typedef uint32_t _Unwind_EHT_Header; struct _Unwind_Control_Block; typedef struct _Unwind_Control_Block _Unwind_Control_Block; typedef struct _Unwind_Control_Block _Unwind_Exception; /* Alias */ struct _Unwind_Control_Block { uint64_t exception_class; void (*exception_cleanup)(_Unwind_Reason_Code, _Unwind_Control_Block*); /* Unwinder cache, private fields for the unwinder's use */ struct { uint32_t reserved1; /* init reserved1 to 0, then don't touch */ uint32_t reserved2; uint32_t reserved3; uint32_t reserved4; uint32_t reserved5; } unwinder_cache; /* Propagation barrier cache (valid after phase 1): */ struct { uint32_t sp; uint32_t bitpattern[5]; } barrier_cache; /* Cleanup cache (preserved over cleanup): */ struct { uint32_t bitpattern[4]; } cleanup_cache; /* Pr cache (for pr's benefit): */ struct { uint32_t fnstart; /* function start address */ _Unwind_EHT_Header* ehtp; /* pointer to EHT entry header word */ uint32_t additional; uint32_t reserved1; } pr_cache; long long int :0; /* Enforce the 8-byte alignment */ } __attribute__((__aligned__(8))); typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) (_Unwind_State state, _Unwind_Exception* exceptionObject, struct _Unwind_Context* context); typedef _Unwind_Reason_Code (*__personality_routine) (_Unwind_State state, _Unwind_Exception* exceptionObject, struct _Unwind_Context* context); #else struct _Unwind_Context; // opaque struct _Unwind_Exception; // forward declaration typedef struct _Unwind_Exception _Unwind_Exception; struct _Unwind_Exception { uint64_t exception_class; void (*exception_cleanup)(_Unwind_Reason_Code reason, _Unwind_Exception *exc); #if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__) uintptr_t private_[6]; #else uintptr_t private_1; // non-zero means forced unwind uintptr_t private_2; // holds sp that phase1 found for phase2 to use #endif #if __SIZEOF_POINTER__ == 4 // The implementation of _Unwind_Exception uses an attribute mode on the // above fields which has the side effect of causing this whole struct to // round up to 32 bytes in size (48 with SEH). To be more explicit, we add // pad fields added for binary compatibility. uint32_t reserved[3]; #endif // The Itanium ABI requires that _Unwind_Exception objects are "double-word // aligned". GCC has interpreted this to mean "use the maximum useful // alignment for the target"; so do we. } __attribute__((__aligned__)); typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) (int version, _Unwind_Action actions, uint64_t exceptionClass, _Unwind_Exception* exceptionObject, struct _Unwind_Context* context, void* stop_parameter ); typedef _Unwind_Reason_Code (*__personality_routine) (int version, _Unwind_Action actions, uint64_t exceptionClass, _Unwind_Exception* exceptionObject, struct _Unwind_Context* context); #endif #ifdef __cplusplus extern "C" { #endif // // The following are the base functions documented by the C++ ABI // #ifdef __USING_SJLJ_EXCEPTIONS__ extern _Unwind_Reason_Code _Unwind_SjLj_RaiseException(_Unwind_Exception *exception_object); extern void _Unwind_SjLj_Resume(_Unwind_Exception *exception_object); #else extern _Unwind_Reason_Code _Unwind_RaiseException(_Unwind_Exception *exception_object); extern void _Unwind_Resume(_Unwind_Exception *exception_object); #endif extern void _Unwind_DeleteException(_Unwind_Exception *exception_object); #if defined(_LIBUNWIND_ARM_EHABI) typedef enum { _UVRSC_CORE = 0, /* integer register */ _UVRSC_VFP = 1, /* vfp */ _UVRSC_WMMXD = 3, /* Intel WMMX data register */ _UVRSC_WMMXC = 4 /* Intel WMMX control register */ } _Unwind_VRS_RegClass; typedef enum { _UVRSD_UINT32 = 0, _UVRSD_VFPX = 1, _UVRSD_UINT64 = 3, _UVRSD_FLOAT = 4, _UVRSD_DOUBLE = 5 } _Unwind_VRS_DataRepresentation; typedef enum { _UVRSR_OK = 0, _UVRSR_NOT_IMPLEMENTED = 1, _UVRSR_FAILED = 2 } _Unwind_VRS_Result; extern void _Unwind_Complete(_Unwind_Exception* exception_object); extern _Unwind_VRS_Result _Unwind_VRS_Get(_Unwind_Context *context, _Unwind_VRS_RegClass regclass, uint32_t regno, _Unwind_VRS_DataRepresentation representation, void *valuep); extern _Unwind_VRS_Result _Unwind_VRS_Set(_Unwind_Context *context, _Unwind_VRS_RegClass regclass, uint32_t regno, _Unwind_VRS_DataRepresentation representation, void *valuep); extern _Unwind_VRS_Result _Unwind_VRS_Pop(_Unwind_Context *context, _Unwind_VRS_RegClass regclass, uint32_t discriminator, _Unwind_VRS_DataRepresentation representation); #endif #if !defined(_LIBUNWIND_ARM_EHABI) extern uintptr_t _Unwind_GetGR(struct _Unwind_Context *context, int index); extern void _Unwind_SetGR(struct _Unwind_Context *context, int index, uintptr_t new_value); extern uintptr_t _Unwind_GetIP(struct _Unwind_Context *context); extern void _Unwind_SetIP(struct _Unwind_Context *, uintptr_t new_value); #else // defined(_LIBUNWIND_ARM_EHABI) #if defined(_LIBUNWIND_UNWIND_LEVEL1_EXTERNAL_LINKAGE) #define _LIBUNWIND_EXPORT_UNWIND_LEVEL1 extern #else #define _LIBUNWIND_EXPORT_UNWIND_LEVEL1 static __inline__ #endif // These are de facto helper functions for ARM, which delegate the function // calls to _Unwind_VRS_Get/Set(). These are not a part of ARM EHABI // specification, thus these function MUST be inlined. Please don't replace // these with the "extern" function declaration; otherwise, the program // including this header won't be ABI compatible and will result in // link error when we are linking the program with libgcc. _LIBUNWIND_EXPORT_UNWIND_LEVEL1 uintptr_t _Unwind_GetGR(struct _Unwind_Context *context, int index) { uintptr_t value = 0; _Unwind_VRS_Get(context, _UVRSC_CORE, (uint32_t)index, _UVRSD_UINT32, &value); return value; } _LIBUNWIND_EXPORT_UNWIND_LEVEL1 void _Unwind_SetGR(struct _Unwind_Context *context, int index, uintptr_t value) { _Unwind_VRS_Set(context, _UVRSC_CORE, (uint32_t)index, _UVRSD_UINT32, &value); } _LIBUNWIND_EXPORT_UNWIND_LEVEL1 uintptr_t _Unwind_GetIP(struct _Unwind_Context *context) { // remove the thumb-bit before returning return _Unwind_GetGR(context, 15) & (~(uintptr_t)0x1); } _LIBUNWIND_EXPORT_UNWIND_LEVEL1 void _Unwind_SetIP(struct _Unwind_Context *context, uintptr_t value) { uintptr_t thumb_bit = _Unwind_GetGR(context, 15) & ((uintptr_t)0x1); _Unwind_SetGR(context, 15, value | thumb_bit); } #endif // defined(_LIBUNWIND_ARM_EHABI) extern uintptr_t _Unwind_GetRegionStart(struct _Unwind_Context *context); extern uintptr_t _Unwind_GetLanguageSpecificData(struct _Unwind_Context *context); #ifdef __USING_SJLJ_EXCEPTIONS__ extern _Unwind_Reason_Code _Unwind_SjLj_ForcedUnwind(_Unwind_Exception *exception_object, _Unwind_Stop_Fn stop, void *stop_parameter); #else extern _Unwind_Reason_Code _Unwind_ForcedUnwind(_Unwind_Exception *exception_object, _Unwind_Stop_Fn stop, void *stop_parameter); #endif #ifdef __USING_SJLJ_EXCEPTIONS__ typedef struct _Unwind_FunctionContext *_Unwind_FunctionContext_t; extern void _Unwind_SjLj_Register(_Unwind_FunctionContext_t fc); extern void _Unwind_SjLj_Unregister(_Unwind_FunctionContext_t fc); #endif // // The following are semi-suppoted extensions to the C++ ABI // // // called by __cxa_rethrow(). // #ifdef __USING_SJLJ_EXCEPTIONS__ extern _Unwind_Reason_Code _Unwind_SjLj_Resume_or_Rethrow(_Unwind_Exception *exception_object); #else extern _Unwind_Reason_Code _Unwind_Resume_or_Rethrow(_Unwind_Exception *exception_object); #endif // _Unwind_Backtrace() is a gcc extension that walks the stack and calls the // _Unwind_Trace_Fn once per frame until it reaches the bottom of the stack // or the _Unwind_Trace_Fn function returns something other than _URC_NO_REASON. typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn)(struct _Unwind_Context *, void *); extern _Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn, void *); // _Unwind_GetCFA is a gcc extension that can be called from within a // personality handler to get the CFA (stack pointer before call) of // current frame. extern uintptr_t _Unwind_GetCFA(struct _Unwind_Context *); // _Unwind_GetIPInfo is a gcc extension that can be called from within a // personality handler. Similar to _Unwind_GetIP() but also returns in // *ipBefore a non-zero value if the instruction pointer is at or before the // instruction causing the unwind. Normally, in a function call, the IP returned // is the return address which is after the call instruction and may be past the // end of the function containing the call instruction. extern uintptr_t _Unwind_GetIPInfo(struct _Unwind_Context *context, int *ipBefore); // __register_frame() is used with dynamically generated code to register the // FDE for a generated (JIT) code. The FDE must use pc-rel addressing to point // to its function and optional LSDA. // __register_frame() has existed in all versions of Mac OS X, but in 10.4 and // 10.5 it was buggy and did not actually register the FDE with the unwinder. // In 10.6 and later it does register properly. extern void __register_frame(const void *fde); extern void __deregister_frame(const void *fde); // _Unwind_Find_FDE() will locate the FDE if the pc is in some function that has // an associated FDE. Note, Mac OS X 10.6 and later, introduces "compact unwind // info" which the runtime uses in preference to DWARF unwind info. This // function will only work if the target function has an FDE but no compact // unwind info. struct dwarf_eh_bases { uintptr_t tbase; uintptr_t dbase; uintptr_t func; }; extern const void *_Unwind_Find_FDE(const void *pc, struct dwarf_eh_bases *); // This function attempts to find the start (address of first instruction) of // a function given an address inside the function. It only works if the // function has an FDE (DWARF unwind info). // This function is unimplemented on Mac OS X 10.6 and later. Instead, use // _Unwind_Find_FDE() and look at the dwarf_eh_bases.func result. extern void *_Unwind_FindEnclosingFunction(void *pc); // Mac OS X does not support text-rel and data-rel addressing so these functions // are unimplemented extern uintptr_t _Unwind_GetDataRelBase(struct _Unwind_Context *context) LIBUNWIND_UNAVAIL; extern uintptr_t _Unwind_GetTextRelBase(struct _Unwind_Context *context) LIBUNWIND_UNAVAIL; // Mac OS X 10.4 and 10.5 had implementations of these functions in // libgcc_s.dylib, but they never worked. /// These functions are no longer available on Mac OS X. extern void __register_frame_info_bases(const void *fde, void *ob, void *tb, void *db) LIBUNWIND_UNAVAIL; extern void __register_frame_info(const void *fde, void *ob) LIBUNWIND_UNAVAIL; extern void __register_frame_info_table_bases(const void *fde, void *ob, void *tb, void *db) LIBUNWIND_UNAVAIL; extern void __register_frame_info_table(const void *fde, void *ob) LIBUNWIND_UNAVAIL; extern void __register_frame_table(const void *fde) LIBUNWIND_UNAVAIL; extern void *__deregister_frame_info(const void *fde) LIBUNWIND_UNAVAIL; extern void *__deregister_frame_info_bases(const void *fde) LIBUNWIND_UNAVAIL; #if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__) #ifndef _WIN32 typedef struct _EXCEPTION_RECORD EXCEPTION_RECORD; typedef struct _CONTEXT CONTEXT; typedef struct _DISPATCHER_CONTEXT DISPATCHER_CONTEXT; #elif !defined(__MINGW32__) && VER_PRODUCTBUILD < 8000 typedef struct _DISPATCHER_CONTEXT DISPATCHER_CONTEXT; #endif // This is the common wrapper for GCC-style personality functions with SEH. extern EXCEPTION_DISPOSITION _GCC_specific_handler(EXCEPTION_RECORD *exc, void *frame, CONTEXT *ctx, DISPATCHER_CONTEXT *disp, __personality_routine pers); #endif #ifdef __cplusplus } #endif #endif // __UNWIND_H__ Index: projects/clang900-import/contrib/libunwind/src/AddressSpace.hpp =================================================================== --- projects/clang900-import/contrib/libunwind/src/AddressSpace.hpp (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/AddressSpace.hpp (revision 351404) @@ -1,738 +1,615 @@ //===------------------------- AddressSpace.hpp ---------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // Abstracts accessing local vs remote address spaces. // //===----------------------------------------------------------------------===// #ifndef __ADDRESSSPACE_HPP__ #define __ADDRESSSPACE_HPP__ #include #include #include #include #ifndef _LIBUNWIND_USE_DLADDR #if !defined(_LIBUNWIND_IS_BAREMETAL) && !defined(_WIN32) #define _LIBUNWIND_USE_DLADDR 1 #else #define _LIBUNWIND_USE_DLADDR 0 #endif #endif #if _LIBUNWIND_USE_DLADDR #include +#if defined(__unix__) && defined(__ELF__) && defined(_LIBUNWIND_HAS_COMMENT_LIB_PRAGMA) +#pragma comment(lib, "dl") #endif +#endif #ifdef __APPLE__ #include namespace libunwind { bool checkKeyMgrRegisteredFDEs(uintptr_t targetAddr, void *&fde); } #endif #include "libunwind.h" #include "config.h" #include "dwarf2.h" #include "EHHeaderParser.hpp" #include "Registers.hpp" #ifdef __APPLE__ struct dyld_unwind_sections { const struct mach_header* mh; const void* dwarf_section; uintptr_t dwarf_section_length; const void* compact_unwind_section; uintptr_t compact_unwind_section_length; }; #if (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) \ && (__MAC_OS_X_VERSION_MIN_REQUIRED >= 1070)) \ || defined(__IPHONE_OS_VERSION_MIN_REQUIRED) // In 10.7.0 or later, libSystem.dylib implements this function. extern "C" bool _dyld_find_unwind_sections(void *, dyld_unwind_sections *); #else // In 10.6.x and earlier, we need to implement this functionality. Note // that this requires a newer version of libmacho (from cctools) than is // present in libSystem on 10.6.x (for getsectiondata). static inline bool _dyld_find_unwind_sections(void* addr, dyld_unwind_sections* info) { // Find mach-o image containing address. Dl_info dlinfo; if (!dladdr(addr, &dlinfo)) return false; #if __LP64__ const struct mach_header_64 *mh = (const struct mach_header_64 *)dlinfo.dli_fbase; #else const struct mach_header *mh = (const struct mach_header *)dlinfo.dli_fbase; #endif // Initialize the return struct info->mh = (const struct mach_header *)mh; info->dwarf_section = getsectiondata(mh, "__TEXT", "__eh_frame", &info->dwarf_section_length); info->compact_unwind_section = getsectiondata(mh, "__TEXT", "__unwind_info", &info->compact_unwind_section_length); if (!info->dwarf_section) { info->dwarf_section_length = 0; } if (!info->compact_unwind_section) { info->compact_unwind_section_length = 0; } return true; } #endif #elif defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) && defined(_LIBUNWIND_IS_BAREMETAL) // When statically linked on bare-metal, the symbols for the EH table are looked // up without going through the dynamic loader. // The following linker script may be used to produce the necessary sections and symbols. // Unless the --eh-frame-hdr linker option is provided, the section is not generated // and does not take space in the output file. // // .eh_frame : // { // __eh_frame_start = .; // KEEP(*(.eh_frame)) // __eh_frame_end = .; // } // // .eh_frame_hdr : // { // KEEP(*(.eh_frame_hdr)) // } // // __eh_frame_hdr_start = SIZEOF(.eh_frame_hdr) > 0 ? ADDR(.eh_frame_hdr) : 0; // __eh_frame_hdr_end = SIZEOF(.eh_frame_hdr) > 0 ? . : 0; extern char __eh_frame_start; extern char __eh_frame_end; #if defined(_LIBUNWIND_SUPPORT_DWARF_INDEX) extern char __eh_frame_hdr_start; extern char __eh_frame_hdr_end; #endif #elif defined(_LIBUNWIND_ARM_EHABI) && defined(_LIBUNWIND_IS_BAREMETAL) // When statically linked on bare-metal, the symbols for the EH table are looked // up without going through the dynamic loader. extern char __exidx_start; extern char __exidx_end; #elif defined(_LIBUNWIND_ARM_EHABI) || defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) // ELF-based systems may use dl_iterate_phdr() to access sections // containing unwinding information. The ElfW() macro for pointer-size // independent ELF header traversal is not provided by on some // systems (e.g., FreeBSD). On these systems the data structures are // just called Elf_XXX. Define ElfW() locally. #ifndef _WIN32 #include #else #include #include #endif #if !defined(ElfW) #define ElfW(type) Elf_##type #endif #endif namespace libunwind { /// Used by findUnwindSections() to return info about needed sections. struct UnwindInfoSections { #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) || defined(_LIBUNWIND_SUPPORT_DWARF_INDEX) || \ defined(_LIBUNWIND_SUPPORT_COMPACT_UNWIND) // No dso_base for SEH or ARM EHABI. uintptr_t dso_base; #endif #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) uintptr_t dwarf_section; uintptr_t dwarf_section_length; #endif #if defined(_LIBUNWIND_SUPPORT_DWARF_INDEX) uintptr_t dwarf_index_section; uintptr_t dwarf_index_section_length; #endif #if defined(_LIBUNWIND_SUPPORT_COMPACT_UNWIND) uintptr_t compact_unwind_section; uintptr_t compact_unwind_section_length; #endif #if defined(_LIBUNWIND_ARM_EHABI) uintptr_t arm_section; uintptr_t arm_section_length; #endif }; /// LocalAddressSpace is used as a template parameter to UnwindCursor when /// unwinding a thread in the same process. The wrappers compile away, /// making local unwinds fast. class _LIBUNWIND_HIDDEN LocalAddressSpace { public: typedef uintptr_t pint_t; typedef intptr_t sint_t; uint8_t get8(pint_t addr) { uint8_t val; memcpy(&val, (void *)addr, sizeof(val)); return val; } uint16_t get16(pint_t addr) { uint16_t val; memcpy(&val, (void *)addr, sizeof(val)); return val; } uint32_t get32(pint_t addr) { uint32_t val; memcpy(&val, (void *)addr, sizeof(val)); return val; } uint64_t get64(pint_t addr) { uint64_t val; memcpy(&val, (void *)addr, sizeof(val)); return val; } double getDouble(pint_t addr) { double val; memcpy(&val, (void *)addr, sizeof(val)); return val; } v128 getVector(pint_t addr) { v128 val; memcpy(&val, (void *)addr, sizeof(val)); return val; } uintptr_t getP(pint_t addr); uint64_t getRegister(pint_t addr); static uint64_t getULEB128(pint_t &addr, pint_t end); static int64_t getSLEB128(pint_t &addr, pint_t end); pint_t getEncodedP(pint_t &addr, pint_t end, uint8_t encoding, pint_t datarelBase = 0); bool findFunctionName(pint_t addr, char *buf, size_t bufLen, unw_word_t *offset); bool findUnwindSections(pint_t targetAddr, UnwindInfoSections &info); bool findOtherFDE(pint_t targetAddr, pint_t &fde); static LocalAddressSpace sThisAddressSpace; }; inline uintptr_t LocalAddressSpace::getP(pint_t addr) { #if __SIZEOF_POINTER__ == 8 return get64(addr); #else return get32(addr); #endif } inline uint64_t LocalAddressSpace::getRegister(pint_t addr) { #if __SIZEOF_POINTER__ == 8 || defined(__mips64) return get64(addr); #else return get32(addr); #endif } /// Read a ULEB128 into a 64-bit word. inline uint64_t LocalAddressSpace::getULEB128(pint_t &addr, pint_t end) { const uint8_t *p = (uint8_t *)addr; const uint8_t *pend = (uint8_t *)end; uint64_t result = 0; int bit = 0; do { uint64_t b; if (p == pend) _LIBUNWIND_ABORT("truncated uleb128 expression"); b = *p & 0x7f; if (bit >= 64 || b << bit >> bit != b) { _LIBUNWIND_ABORT("malformed uleb128 expression"); } else { result |= b << bit; bit += 7; } } while (*p++ >= 0x80); addr = (pint_t) p; return result; } /// Read a SLEB128 into a 64-bit word. inline int64_t LocalAddressSpace::getSLEB128(pint_t &addr, pint_t end) { const uint8_t *p = (uint8_t *)addr; const uint8_t *pend = (uint8_t *)end; int64_t result = 0; int bit = 0; uint8_t byte; do { if (p == pend) _LIBUNWIND_ABORT("truncated sleb128 expression"); byte = *p++; result |= ((byte & 0x7f) << bit); bit += 7; } while (byte & 0x80); // sign extend negative numbers if ((byte & 0x40) != 0) result |= (-1ULL) << bit; addr = (pint_t) p; return result; } inline LocalAddressSpace::pint_t LocalAddressSpace::getEncodedP(pint_t &addr, pint_t end, uint8_t encoding, pint_t datarelBase) { pint_t startAddr = addr; const uint8_t *p = (uint8_t *)addr; pint_t result; // first get value switch (encoding & 0x0F) { case DW_EH_PE_ptr: result = getP(addr); p += sizeof(pint_t); addr = (pint_t) p; break; case DW_EH_PE_uleb128: result = (pint_t)getULEB128(addr, end); break; case DW_EH_PE_udata2: result = get16(addr); p += 2; addr = (pint_t) p; break; case DW_EH_PE_udata4: result = get32(addr); p += 4; addr = (pint_t) p; break; case DW_EH_PE_udata8: result = (pint_t)get64(addr); p += 8; addr = (pint_t) p; break; case DW_EH_PE_sleb128: result = (pint_t)getSLEB128(addr, end); break; case DW_EH_PE_sdata2: // Sign extend from signed 16-bit value. result = (pint_t)(int16_t)get16(addr); p += 2; addr = (pint_t) p; break; case DW_EH_PE_sdata4: // Sign extend from signed 32-bit value. result = (pint_t)(int32_t)get32(addr); p += 4; addr = (pint_t) p; break; case DW_EH_PE_sdata8: result = (pint_t)get64(addr); p += 8; addr = (pint_t) p; break; default: _LIBUNWIND_ABORT("unknown pointer encoding"); } // then add relative offset switch (encoding & 0x70) { case DW_EH_PE_absptr: // do nothing break; case DW_EH_PE_pcrel: result += startAddr; break; case DW_EH_PE_textrel: _LIBUNWIND_ABORT("DW_EH_PE_textrel pointer encoding not supported"); break; case DW_EH_PE_datarel: // DW_EH_PE_datarel is only valid in a few places, so the parameter has a // default value of 0, and we abort in the event that someone calls this // function with a datarelBase of 0 and DW_EH_PE_datarel encoding. if (datarelBase == 0) _LIBUNWIND_ABORT("DW_EH_PE_datarel is invalid with a datarelBase of 0"); result += datarelBase; break; case DW_EH_PE_funcrel: _LIBUNWIND_ABORT("DW_EH_PE_funcrel pointer encoding not supported"); break; case DW_EH_PE_aligned: _LIBUNWIND_ABORT("DW_EH_PE_aligned pointer encoding not supported"); break; default: _LIBUNWIND_ABORT("unknown pointer encoding"); break; } if (encoding & DW_EH_PE_indirect) result = getP(result); return result; } inline bool LocalAddressSpace::findUnwindSections(pint_t targetAddr, UnwindInfoSections &info) { #ifdef __APPLE__ dyld_unwind_sections dyldInfo; if (_dyld_find_unwind_sections((void *)targetAddr, &dyldInfo)) { info.dso_base = (uintptr_t)dyldInfo.mh; #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) info.dwarf_section = (uintptr_t)dyldInfo.dwarf_section; info.dwarf_section_length = dyldInfo.dwarf_section_length; #endif info.compact_unwind_section = (uintptr_t)dyldInfo.compact_unwind_section; info.compact_unwind_section_length = dyldInfo.compact_unwind_section_length; return true; } #elif defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) && defined(_LIBUNWIND_IS_BAREMETAL) // Bare metal is statically linked, so no need to ask the dynamic loader info.dwarf_section_length = (uintptr_t)(&__eh_frame_end - &__eh_frame_start); info.dwarf_section = (uintptr_t)(&__eh_frame_start); _LIBUNWIND_TRACE_UNWINDING("findUnwindSections: section %p length %p", (void *)info.dwarf_section, (void *)info.dwarf_section_length); #if defined(_LIBUNWIND_SUPPORT_DWARF_INDEX) info.dwarf_index_section = (uintptr_t)(&__eh_frame_hdr_start); info.dwarf_index_section_length = (uintptr_t)(&__eh_frame_hdr_end - &__eh_frame_hdr_start); _LIBUNWIND_TRACE_UNWINDING("findUnwindSections: index section %p length %p", (void *)info.dwarf_index_section, (void *)info.dwarf_index_section_length); #endif if (info.dwarf_section_length) return true; #elif defined(_LIBUNWIND_ARM_EHABI) && defined(_LIBUNWIND_IS_BAREMETAL) // Bare metal is statically linked, so no need to ask the dynamic loader info.arm_section = (uintptr_t)(&__exidx_start); info.arm_section_length = (uintptr_t)(&__exidx_end - &__exidx_start); _LIBUNWIND_TRACE_UNWINDING("findUnwindSections: section %p length %p", (void *)info.arm_section, (void *)info.arm_section_length); if (info.arm_section && info.arm_section_length) return true; #elif defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) && defined(_WIN32) HMODULE mods[1024]; HANDLE process = GetCurrentProcess(); DWORD needed; if (!EnumProcessModules(process, mods, sizeof(mods), &needed)) return false; for (unsigned i = 0; i < (needed / sizeof(HMODULE)); i++) { PIMAGE_DOS_HEADER pidh = (PIMAGE_DOS_HEADER)mods[i]; PIMAGE_NT_HEADERS pinh = (PIMAGE_NT_HEADERS)((BYTE *)pidh + pidh->e_lfanew); PIMAGE_FILE_HEADER pifh = (PIMAGE_FILE_HEADER)&pinh->FileHeader; PIMAGE_SECTION_HEADER pish = IMAGE_FIRST_SECTION(pinh); bool found_obj = false; bool found_hdr = false; info.dso_base = (uintptr_t)mods[i]; for (unsigned j = 0; j < pifh->NumberOfSections; j++, pish++) { uintptr_t begin = pish->VirtualAddress + (uintptr_t)mods[i]; uintptr_t end = begin + pish->Misc.VirtualSize; if (!strncmp((const char *)pish->Name, ".text", IMAGE_SIZEOF_SHORT_NAME)) { if (targetAddr >= begin && targetAddr < end) found_obj = true; } else if (!strncmp((const char *)pish->Name, ".eh_frame", IMAGE_SIZEOF_SHORT_NAME)) { info.dwarf_section = begin; info.dwarf_section_length = pish->Misc.VirtualSize; found_hdr = true; } if (found_obj && found_hdr) return true; } } return false; #elif defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) && defined(_WIN32) // Don't even bother, since Windows has functions that do all this stuff // for us. + (void)targetAddr; + (void)info; return true; #elif defined(_LIBUNWIND_ARM_EHABI) && defined(__BIONIC__) && \ (__ANDROID_API__ < 21) int length = 0; info.arm_section = (uintptr_t)dl_unwind_find_exidx((_Unwind_Ptr)targetAddr, &length); info.arm_section_length = (uintptr_t)length; if (info.arm_section && info.arm_section_length) return true; #elif defined(_LIBUNWIND_ARM_EHABI) || defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) struct dl_iterate_cb_data { LocalAddressSpace *addressSpace; UnwindInfoSections *sects; uintptr_t targetAddr; }; dl_iterate_cb_data cb_data = {this, &info, targetAddr}; int found = dl_iterate_phdr( [](struct dl_phdr_info *pinfo, size_t, void *data) -> int { auto cbdata = static_cast(data); bool found_obj = false; bool found_hdr = false; assert(cbdata); assert(cbdata->sects); if (cbdata->targetAddr < pinfo->dlpi_addr) { return false; } #if !defined(Elf_Half) typedef ElfW(Half) Elf_Half; #endif #if !defined(Elf_Phdr) typedef ElfW(Phdr) Elf_Phdr; #endif #if !defined(Elf_Addr) && defined(__ANDROID__) typedef ElfW(Addr) Elf_Addr; #endif #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) #if !defined(_LIBUNWIND_SUPPORT_DWARF_INDEX) #error "_LIBUNWIND_SUPPORT_DWARF_UNWIND requires _LIBUNWIND_SUPPORT_DWARF_INDEX on this platform." #endif size_t object_length; #if defined(__ANDROID__) Elf_Addr image_base = pinfo->dlpi_phnum ? reinterpret_cast(pinfo->dlpi_phdr) - reinterpret_cast(pinfo->dlpi_phdr) ->p_offset : 0; #endif for (Elf_Half i = 0; i < pinfo->dlpi_phnum; i++) { const Elf_Phdr *phdr = &pinfo->dlpi_phdr[i]; if (phdr->p_type == PT_LOAD) { uintptr_t begin = pinfo->dlpi_addr + phdr->p_vaddr; #if defined(__ANDROID__) if (pinfo->dlpi_addr == 0 && phdr->p_vaddr < image_base) begin = begin + image_base; #endif uintptr_t end = begin + phdr->p_memsz; if (cbdata->targetAddr >= begin && cbdata->targetAddr < end) { cbdata->sects->dso_base = begin; object_length = phdr->p_memsz; found_obj = true; } } else if (phdr->p_type == PT_GNU_EH_FRAME) { EHHeaderParser::EHHeaderInfo hdrInfo; uintptr_t eh_frame_hdr_start = pinfo->dlpi_addr + phdr->p_vaddr; #if defined(__ANDROID__) if (pinfo->dlpi_addr == 0 && phdr->p_vaddr < image_base) eh_frame_hdr_start = eh_frame_hdr_start + image_base; #endif cbdata->sects->dwarf_index_section = eh_frame_hdr_start; cbdata->sects->dwarf_index_section_length = phdr->p_memsz; found_hdr = EHHeaderParser::decodeEHHdr( *cbdata->addressSpace, eh_frame_hdr_start, phdr->p_memsz, hdrInfo); if (found_hdr) cbdata->sects->dwarf_section = hdrInfo.eh_frame_ptr; } } if (found_obj && found_hdr) { cbdata->sects->dwarf_section_length = object_length; return true; } else { return false; } #else // defined(_LIBUNWIND_ARM_EHABI) for (Elf_Half i = 0; i < pinfo->dlpi_phnum; i++) { const Elf_Phdr *phdr = &pinfo->dlpi_phdr[i]; if (phdr->p_type == PT_LOAD) { uintptr_t begin = pinfo->dlpi_addr + phdr->p_vaddr; uintptr_t end = begin + phdr->p_memsz; if (cbdata->targetAddr >= begin && cbdata->targetAddr < end) found_obj = true; } else if (phdr->p_type == PT_ARM_EXIDX) { uintptr_t exidx_start = pinfo->dlpi_addr + phdr->p_vaddr; cbdata->sects->arm_section = exidx_start; cbdata->sects->arm_section_length = phdr->p_memsz; found_hdr = true; } } return found_obj && found_hdr; #endif }, &cb_data); return static_cast(found); #endif return false; } inline bool LocalAddressSpace::findOtherFDE(pint_t targetAddr, pint_t &fde) { #ifdef __APPLE__ return checkKeyMgrRegisteredFDEs(targetAddr, *((void**)&fde)); #else // TO DO: if OS has way to dynamically register FDEs, check that. (void)targetAddr; (void)fde; return false; #endif } inline bool LocalAddressSpace::findFunctionName(pint_t addr, char *buf, size_t bufLen, unw_word_t *offset) { #if _LIBUNWIND_USE_DLADDR Dl_info dyldInfo; if (dladdr((void *)addr, &dyldInfo)) { if (dyldInfo.dli_sname != NULL) { snprintf(buf, bufLen, "%s", dyldInfo.dli_sname); *offset = (addr - (pint_t) dyldInfo.dli_saddr); return true; } } +#else + (void)addr; + (void)buf; + (void)bufLen; + (void)offset; #endif return false; } - - - -#ifdef UNW_REMOTE - -/// RemoteAddressSpace is used as a template parameter to UnwindCursor when -/// unwinding a thread in the another process. The other process can be a -/// different endianness and a different pointer size which is handled by -/// the P template parameter. -template -class RemoteAddressSpace { -public: - RemoteAddressSpace(task_t task) : fTask(task) {} - - typedef typename P::uint_t pint_t; - - uint8_t get8(pint_t addr); - uint16_t get16(pint_t addr); - uint32_t get32(pint_t addr); - uint64_t get64(pint_t addr); - pint_t getP(pint_t addr); - uint64_t getRegister(pint_t addr); - uint64_t getULEB128(pint_t &addr, pint_t end); - int64_t getSLEB128(pint_t &addr, pint_t end); - pint_t getEncodedP(pint_t &addr, pint_t end, uint8_t encoding, - pint_t datarelBase = 0); - bool findFunctionName(pint_t addr, char *buf, size_t bufLen, - unw_word_t *offset); - bool findUnwindSections(pint_t targetAddr, UnwindInfoSections &info); - bool findOtherFDE(pint_t targetAddr, pint_t &fde); -private: - void *localCopy(pint_t addr); - - task_t fTask; -}; - -template uint8_t RemoteAddressSpace

::get8(pint_t addr) { - return *((uint8_t *)localCopy(addr)); -} - -template uint16_t RemoteAddressSpace

::get16(pint_t addr) { - return P::E::get16(*(uint16_t *)localCopy(addr)); -} - -template uint32_t RemoteAddressSpace

::get32(pint_t addr) { - return P::E::get32(*(uint32_t *)localCopy(addr)); -} - -template uint64_t RemoteAddressSpace

::get64(pint_t addr) { - return P::E::get64(*(uint64_t *)localCopy(addr)); -} - -template -typename P::uint_t RemoteAddressSpace

::getP(pint_t addr) { - return P::getP(*(uint64_t *)localCopy(addr)); -} - -template -typename P::uint_t OtherAddressSpace

::getRegister(pint_t addr) { - return P::getRegister(*(uint64_t *)localCopy(addr)); -} - -template -uint64_t OtherAddressSpace

::getULEB128(pint_t &addr, pint_t end) { - uintptr_t size = (end - addr); - LocalAddressSpace::pint_t laddr = (LocalAddressSpace::pint_t) localCopy(addr); - LocalAddressSpace::pint_t sladdr = laddr; - uint64_t result = LocalAddressSpace::getULEB128(laddr, laddr + size); - addr += (laddr - sladdr); - return result; -} - -template -int64_t RemoteAddressSpace

::getSLEB128(pint_t &addr, pint_t end) { - uintptr_t size = (end - addr); - LocalAddressSpace::pint_t laddr = (LocalAddressSpace::pint_t) localCopy(addr); - LocalAddressSpace::pint_t sladdr = laddr; - uint64_t result = LocalAddressSpace::getSLEB128(laddr, laddr + size); - addr += (laddr - sladdr); - return result; -} - -template void *RemoteAddressSpace

::localCopy(pint_t addr) { - // FIX ME -} - -template -bool RemoteAddressSpace

::findFunctionName(pint_t addr, char *buf, - size_t bufLen, - unw_word_t *offset) { - // FIX ME -} - -/// unw_addr_space is the base class that abstract unw_addr_space_t type in -/// libunwind.h points to. -struct unw_addr_space { - cpu_type_t cpuType; - task_t taskPort; -}; - -/// unw_addr_space_i386 is the concrete instance that a unw_addr_space_t points -/// to when examining -/// a 32-bit intel process. -struct unw_addr_space_i386 : public unw_addr_space { - unw_addr_space_i386(task_t task) : oas(task) {} - RemoteAddressSpace> oas; -}; - -/// unw_addr_space_x86_64 is the concrete instance that a unw_addr_space_t -/// points to when examining -/// a 64-bit intel process. -struct unw_addr_space_x86_64 : public unw_addr_space { - unw_addr_space_x86_64(task_t task) : oas(task) {} - RemoteAddressSpace> oas; -}; - -/// unw_addr_space_ppc is the concrete instance that a unw_addr_space_t points -/// to when examining -/// a 32-bit PowerPC process. -struct unw_addr_space_ppc : public unw_addr_space { - unw_addr_space_ppc(task_t task) : oas(task) {} - RemoteAddressSpace> oas; -}; - -/// unw_addr_space_ppc is the concrete instance that a unw_addr_space_t points -/// to when examining a 64-bit PowerPC process. -struct unw_addr_space_ppc64 : public unw_addr_space { - unw_addr_space_ppc64(task_t task) : oas(task) {} - RemoteAddressSpace> oas; -}; - -#endif // UNW_REMOTE } // namespace libunwind #endif // __ADDRESSSPACE_HPP__ Index: projects/clang900-import/contrib/libunwind/src/CompactUnwinder.hpp =================================================================== --- projects/clang900-import/contrib/libunwind/src/CompactUnwinder.hpp (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/CompactUnwinder.hpp (revision 351404) @@ -1,698 +1,697 @@ //===-------------------------- CompactUnwinder.hpp -----------------------===// // -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // // // Does runtime stack unwinding using compact unwind encodings. // //===----------------------------------------------------------------------===// #ifndef __COMPACT_UNWINDER_HPP__ #define __COMPACT_UNWINDER_HPP__ #include #include #include #include #include "Registers.hpp" #define EXTRACT_BITS(value, mask) \ ((value >> __builtin_ctz(mask)) & (((1 << __builtin_popcount(mask))) - 1)) namespace libunwind { #if defined(_LIBUNWIND_TARGET_I386) /// CompactUnwinder_x86 uses a compact unwind info to virtually "step" (aka /// unwind) by modifying a Registers_x86 register set template class CompactUnwinder_x86 { public: static int stepWithCompactEncoding(compact_unwind_encoding_t info, uint32_t functionStart, A &addressSpace, Registers_x86 ®isters); private: typename A::pint_t pint_t; static void frameUnwind(A &addressSpace, Registers_x86 ®isters); static void framelessUnwind(A &addressSpace, typename A::pint_t returnAddressLocation, Registers_x86 ®isters); static int stepWithCompactEncodingEBPFrame(compact_unwind_encoding_t compactEncoding, uint32_t functionStart, A &addressSpace, Registers_x86 ®isters); static int stepWithCompactEncodingFrameless( compact_unwind_encoding_t compactEncoding, uint32_t functionStart, A &addressSpace, Registers_x86 ®isters, bool indirectStackSize); }; template int CompactUnwinder_x86::stepWithCompactEncoding( compact_unwind_encoding_t compactEncoding, uint32_t functionStart, A &addressSpace, Registers_x86 ®isters) { switch (compactEncoding & UNWIND_X86_MODE_MASK) { case UNWIND_X86_MODE_EBP_FRAME: return stepWithCompactEncodingEBPFrame(compactEncoding, functionStart, addressSpace, registers); case UNWIND_X86_MODE_STACK_IMMD: return stepWithCompactEncodingFrameless(compactEncoding, functionStart, addressSpace, registers, false); case UNWIND_X86_MODE_STACK_IND: return stepWithCompactEncodingFrameless(compactEncoding, functionStart, addressSpace, registers, true); } _LIBUNWIND_ABORT("invalid compact unwind encoding"); } template int CompactUnwinder_x86::stepWithCompactEncodingEBPFrame( compact_unwind_encoding_t compactEncoding, uint32_t functionStart, A &addressSpace, Registers_x86 ®isters) { uint32_t savedRegistersOffset = EXTRACT_BITS(compactEncoding, UNWIND_X86_EBP_FRAME_OFFSET); uint32_t savedRegistersLocations = EXTRACT_BITS(compactEncoding, UNWIND_X86_EBP_FRAME_REGISTERS); uint32_t savedRegisters = registers.getEBP() - 4 * savedRegistersOffset; for (int i = 0; i < 5; ++i) { switch (savedRegistersLocations & 0x7) { case UNWIND_X86_REG_NONE: // no register saved in this slot break; case UNWIND_X86_REG_EBX: registers.setEBX(addressSpace.get32(savedRegisters)); break; case UNWIND_X86_REG_ECX: registers.setECX(addressSpace.get32(savedRegisters)); break; case UNWIND_X86_REG_EDX: registers.setEDX(addressSpace.get32(savedRegisters)); break; case UNWIND_X86_REG_EDI: registers.setEDI(addressSpace.get32(savedRegisters)); break; case UNWIND_X86_REG_ESI: registers.setESI(addressSpace.get32(savedRegisters)); break; default: (void)functionStart; _LIBUNWIND_DEBUG_LOG("bad register for EBP frame, encoding=%08X for " "function starting at 0x%X", compactEncoding, functionStart); _LIBUNWIND_ABORT("invalid compact unwind encoding"); } savedRegisters += 4; savedRegistersLocations = (savedRegistersLocations >> 3); } frameUnwind(addressSpace, registers); return UNW_STEP_SUCCESS; } template int CompactUnwinder_x86::stepWithCompactEncodingFrameless( compact_unwind_encoding_t encoding, uint32_t functionStart, A &addressSpace, Registers_x86 ®isters, bool indirectStackSize) { uint32_t stackSizeEncoded = EXTRACT_BITS(encoding, UNWIND_X86_FRAMELESS_STACK_SIZE); uint32_t stackAdjust = EXTRACT_BITS(encoding, UNWIND_X86_FRAMELESS_STACK_ADJUST); uint32_t regCount = EXTRACT_BITS(encoding, UNWIND_X86_FRAMELESS_STACK_REG_COUNT); uint32_t permutation = EXTRACT_BITS(encoding, UNWIND_X86_FRAMELESS_STACK_REG_PERMUTATION); uint32_t stackSize = stackSizeEncoded * 4; if (indirectStackSize) { // stack size is encoded in subl $xxx,%esp instruction uint32_t subl = addressSpace.get32(functionStart + stackSizeEncoded); stackSize = subl + 4 * stackAdjust; } // decompress permutation uint32_t permunreg[6]; switch (regCount) { case 6: permunreg[0] = permutation / 120; permutation -= (permunreg[0] * 120); permunreg[1] = permutation / 24; permutation -= (permunreg[1] * 24); permunreg[2] = permutation / 6; permutation -= (permunreg[2] * 6); permunreg[3] = permutation / 2; permutation -= (permunreg[3] * 2); permunreg[4] = permutation; permunreg[5] = 0; break; case 5: permunreg[0] = permutation / 120; permutation -= (permunreg[0] * 120); permunreg[1] = permutation / 24; permutation -= (permunreg[1] * 24); permunreg[2] = permutation / 6; permutation -= (permunreg[2] * 6); permunreg[3] = permutation / 2; permutation -= (permunreg[3] * 2); permunreg[4] = permutation; break; case 4: permunreg[0] = permutation / 60; permutation -= (permunreg[0] * 60); permunreg[1] = permutation / 12; permutation -= (permunreg[1] * 12); permunreg[2] = permutation / 3; permutation -= (permunreg[2] * 3); permunreg[3] = permutation; break; case 3: permunreg[0] = permutation / 20; permutation -= (permunreg[0] * 20); permunreg[1] = permutation / 4; permutation -= (permunreg[1] * 4); permunreg[2] = permutation; break; case 2: permunreg[0] = permutation / 5; permutation -= (permunreg[0] * 5); permunreg[1] = permutation; break; case 1: permunreg[0] = permutation; break; } // re-number registers back to standard numbers int registersSaved[6]; bool used[7] = { false, false, false, false, false, false, false }; for (uint32_t i = 0; i < regCount; ++i) { uint32_t renum = 0; for (int u = 1; u < 7; ++u) { if (!used[u]) { if (renum == permunreg[i]) { registersSaved[i] = u; used[u] = true; break; } ++renum; } } } uint32_t savedRegisters = registers.getSP() + stackSize - 4 - 4 * regCount; for (uint32_t i = 0; i < regCount; ++i) { switch (registersSaved[i]) { case UNWIND_X86_REG_EBX: registers.setEBX(addressSpace.get32(savedRegisters)); break; case UNWIND_X86_REG_ECX: registers.setECX(addressSpace.get32(savedRegisters)); break; case UNWIND_X86_REG_EDX: registers.setEDX(addressSpace.get32(savedRegisters)); break; case UNWIND_X86_REG_EDI: registers.setEDI(addressSpace.get32(savedRegisters)); break; case UNWIND_X86_REG_ESI: registers.setESI(addressSpace.get32(savedRegisters)); break; case UNWIND_X86_REG_EBP: registers.setEBP(addressSpace.get32(savedRegisters)); break; default: _LIBUNWIND_DEBUG_LOG("bad register for frameless, encoding=%08X for " "function starting at 0x%X", encoding, functionStart); _LIBUNWIND_ABORT("invalid compact unwind encoding"); } savedRegisters += 4; } framelessUnwind(addressSpace, savedRegisters, registers); return UNW_STEP_SUCCESS; } template void CompactUnwinder_x86::frameUnwind(A &addressSpace, Registers_x86 ®isters) { typename A::pint_t bp = registers.getEBP(); // ebp points to old ebp registers.setEBP(addressSpace.get32(bp)); // old esp is ebp less saved ebp and return address registers.setSP((uint32_t)bp + 8); // pop return address into eip registers.setIP(addressSpace.get32(bp + 4)); } template void CompactUnwinder_x86::framelessUnwind( A &addressSpace, typename A::pint_t returnAddressLocation, Registers_x86 ®isters) { // return address is on stack after last saved register registers.setIP(addressSpace.get32(returnAddressLocation)); // old esp is before return address registers.setSP((uint32_t)returnAddressLocation + 4); } #endif // _LIBUNWIND_TARGET_I386 #if defined(_LIBUNWIND_TARGET_X86_64) /// CompactUnwinder_x86_64 uses a compact unwind info to virtually "step" (aka /// unwind) by modifying a Registers_x86_64 register set template class CompactUnwinder_x86_64 { public: static int stepWithCompactEncoding(compact_unwind_encoding_t compactEncoding, uint64_t functionStart, A &addressSpace, Registers_x86_64 ®isters); private: typename A::pint_t pint_t; static void frameUnwind(A &addressSpace, Registers_x86_64 ®isters); static void framelessUnwind(A &addressSpace, uint64_t returnAddressLocation, Registers_x86_64 ®isters); static int stepWithCompactEncodingRBPFrame(compact_unwind_encoding_t compactEncoding, uint64_t functionStart, A &addressSpace, Registers_x86_64 ®isters); static int stepWithCompactEncodingFrameless( compact_unwind_encoding_t compactEncoding, uint64_t functionStart, A &addressSpace, Registers_x86_64 ®isters, bool indirectStackSize); }; template int CompactUnwinder_x86_64::stepWithCompactEncoding( compact_unwind_encoding_t compactEncoding, uint64_t functionStart, A &addressSpace, Registers_x86_64 ®isters) { switch (compactEncoding & UNWIND_X86_64_MODE_MASK) { case UNWIND_X86_64_MODE_RBP_FRAME: return stepWithCompactEncodingRBPFrame(compactEncoding, functionStart, addressSpace, registers); case UNWIND_X86_64_MODE_STACK_IMMD: return stepWithCompactEncodingFrameless(compactEncoding, functionStart, addressSpace, registers, false); case UNWIND_X86_64_MODE_STACK_IND: return stepWithCompactEncodingFrameless(compactEncoding, functionStart, addressSpace, registers, true); } _LIBUNWIND_ABORT("invalid compact unwind encoding"); } template int CompactUnwinder_x86_64::stepWithCompactEncodingRBPFrame( compact_unwind_encoding_t compactEncoding, uint64_t functionStart, A &addressSpace, Registers_x86_64 ®isters) { uint32_t savedRegistersOffset = EXTRACT_BITS(compactEncoding, UNWIND_X86_64_RBP_FRAME_OFFSET); uint32_t savedRegistersLocations = EXTRACT_BITS(compactEncoding, UNWIND_X86_64_RBP_FRAME_REGISTERS); uint64_t savedRegisters = registers.getRBP() - 8 * savedRegistersOffset; for (int i = 0; i < 5; ++i) { switch (savedRegistersLocations & 0x7) { case UNWIND_X86_64_REG_NONE: // no register saved in this slot break; case UNWIND_X86_64_REG_RBX: registers.setRBX(addressSpace.get64(savedRegisters)); break; case UNWIND_X86_64_REG_R12: registers.setR12(addressSpace.get64(savedRegisters)); break; case UNWIND_X86_64_REG_R13: registers.setR13(addressSpace.get64(savedRegisters)); break; case UNWIND_X86_64_REG_R14: registers.setR14(addressSpace.get64(savedRegisters)); break; case UNWIND_X86_64_REG_R15: registers.setR15(addressSpace.get64(savedRegisters)); break; default: (void)functionStart; _LIBUNWIND_DEBUG_LOG("bad register for RBP frame, encoding=%08X for " "function starting at 0x%llX", compactEncoding, functionStart); _LIBUNWIND_ABORT("invalid compact unwind encoding"); } savedRegisters += 8; savedRegistersLocations = (savedRegistersLocations >> 3); } frameUnwind(addressSpace, registers); return UNW_STEP_SUCCESS; } template int CompactUnwinder_x86_64::stepWithCompactEncodingFrameless( compact_unwind_encoding_t encoding, uint64_t functionStart, A &addressSpace, Registers_x86_64 ®isters, bool indirectStackSize) { uint32_t stackSizeEncoded = EXTRACT_BITS(encoding, UNWIND_X86_64_FRAMELESS_STACK_SIZE); uint32_t stackAdjust = EXTRACT_BITS(encoding, UNWIND_X86_64_FRAMELESS_STACK_ADJUST); uint32_t regCount = EXTRACT_BITS(encoding, UNWIND_X86_64_FRAMELESS_STACK_REG_COUNT); uint32_t permutation = EXTRACT_BITS(encoding, UNWIND_X86_64_FRAMELESS_STACK_REG_PERMUTATION); uint32_t stackSize = stackSizeEncoded * 8; if (indirectStackSize) { // stack size is encoded in subl $xxx,%esp instruction uint32_t subl = addressSpace.get32(functionStart + stackSizeEncoded); stackSize = subl + 8 * stackAdjust; } // decompress permutation uint32_t permunreg[6]; switch (regCount) { case 6: permunreg[0] = permutation / 120; permutation -= (permunreg[0] * 120); permunreg[1] = permutation / 24; permutation -= (permunreg[1] * 24); permunreg[2] = permutation / 6; permutation -= (permunreg[2] * 6); permunreg[3] = permutation / 2; permutation -= (permunreg[3] * 2); permunreg[4] = permutation; permunreg[5] = 0; break; case 5: permunreg[0] = permutation / 120; permutation -= (permunreg[0] * 120); permunreg[1] = permutation / 24; permutation -= (permunreg[1] * 24); permunreg[2] = permutation / 6; permutation -= (permunreg[2] * 6); permunreg[3] = permutation / 2; permutation -= (permunreg[3] * 2); permunreg[4] = permutation; break; case 4: permunreg[0] = permutation / 60; permutation -= (permunreg[0] * 60); permunreg[1] = permutation / 12; permutation -= (permunreg[1] * 12); permunreg[2] = permutation / 3; permutation -= (permunreg[2] * 3); permunreg[3] = permutation; break; case 3: permunreg[0] = permutation / 20; permutation -= (permunreg[0] * 20); permunreg[1] = permutation / 4; permutation -= (permunreg[1] * 4); permunreg[2] = permutation; break; case 2: permunreg[0] = permutation / 5; permutation -= (permunreg[0] * 5); permunreg[1] = permutation; break; case 1: permunreg[0] = permutation; break; } // re-number registers back to standard numbers int registersSaved[6]; bool used[7] = { false, false, false, false, false, false, false }; for (uint32_t i = 0; i < regCount; ++i) { uint32_t renum = 0; for (int u = 1; u < 7; ++u) { if (!used[u]) { if (renum == permunreg[i]) { registersSaved[i] = u; used[u] = true; break; } ++renum; } } } uint64_t savedRegisters = registers.getSP() + stackSize - 8 - 8 * regCount; for (uint32_t i = 0; i < regCount; ++i) { switch (registersSaved[i]) { case UNWIND_X86_64_REG_RBX: registers.setRBX(addressSpace.get64(savedRegisters)); break; case UNWIND_X86_64_REG_R12: registers.setR12(addressSpace.get64(savedRegisters)); break; case UNWIND_X86_64_REG_R13: registers.setR13(addressSpace.get64(savedRegisters)); break; case UNWIND_X86_64_REG_R14: registers.setR14(addressSpace.get64(savedRegisters)); break; case UNWIND_X86_64_REG_R15: registers.setR15(addressSpace.get64(savedRegisters)); break; case UNWIND_X86_64_REG_RBP: registers.setRBP(addressSpace.get64(savedRegisters)); break; default: _LIBUNWIND_DEBUG_LOG("bad register for frameless, encoding=%08X for " "function starting at 0x%llX", encoding, functionStart); _LIBUNWIND_ABORT("invalid compact unwind encoding"); } savedRegisters += 8; } framelessUnwind(addressSpace, savedRegisters, registers); return UNW_STEP_SUCCESS; } template void CompactUnwinder_x86_64::frameUnwind(A &addressSpace, Registers_x86_64 ®isters) { uint64_t rbp = registers.getRBP(); // ebp points to old ebp registers.setRBP(addressSpace.get64(rbp)); // old esp is ebp less saved ebp and return address registers.setSP(rbp + 16); // pop return address into eip registers.setIP(addressSpace.get64(rbp + 8)); } template void CompactUnwinder_x86_64::framelessUnwind(A &addressSpace, uint64_t returnAddressLocation, Registers_x86_64 ®isters) { // return address is on stack after last saved register registers.setIP(addressSpace.get64(returnAddressLocation)); // old esp is before return address registers.setSP(returnAddressLocation + 8); } #endif // _LIBUNWIND_TARGET_X86_64 #if defined(_LIBUNWIND_TARGET_AARCH64) /// CompactUnwinder_arm64 uses a compact unwind info to virtually "step" (aka /// unwind) by modifying a Registers_arm64 register set template class CompactUnwinder_arm64 { public: static int stepWithCompactEncoding(compact_unwind_encoding_t compactEncoding, uint64_t functionStart, A &addressSpace, Registers_arm64 ®isters); private: typename A::pint_t pint_t; static int stepWithCompactEncodingFrame(compact_unwind_encoding_t compactEncoding, uint64_t functionStart, A &addressSpace, Registers_arm64 ®isters); static int stepWithCompactEncodingFrameless( compact_unwind_encoding_t compactEncoding, uint64_t functionStart, A &addressSpace, Registers_arm64 ®isters); }; template int CompactUnwinder_arm64::stepWithCompactEncoding( compact_unwind_encoding_t compactEncoding, uint64_t functionStart, A &addressSpace, Registers_arm64 ®isters) { switch (compactEncoding & UNWIND_ARM64_MODE_MASK) { case UNWIND_ARM64_MODE_FRAME: return stepWithCompactEncodingFrame(compactEncoding, functionStart, addressSpace, registers); case UNWIND_ARM64_MODE_FRAMELESS: return stepWithCompactEncodingFrameless(compactEncoding, functionStart, addressSpace, registers); } _LIBUNWIND_ABORT("invalid compact unwind encoding"); } template int CompactUnwinder_arm64::stepWithCompactEncodingFrameless( compact_unwind_encoding_t encoding, uint64_t, A &addressSpace, Registers_arm64 ®isters) { uint32_t stackSize = 16 * EXTRACT_BITS(encoding, UNWIND_ARM64_FRAMELESS_STACK_SIZE_MASK); uint64_t savedRegisterLoc = registers.getSP() + stackSize; if (encoding & UNWIND_ARM64_FRAME_X19_X20_PAIR) { registers.setRegister(UNW_ARM64_X19, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setRegister(UNW_ARM64_X20, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_X21_X22_PAIR) { registers.setRegister(UNW_ARM64_X21, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setRegister(UNW_ARM64_X22, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_X23_X24_PAIR) { registers.setRegister(UNW_ARM64_X23, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setRegister(UNW_ARM64_X24, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_X25_X26_PAIR) { registers.setRegister(UNW_ARM64_X25, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setRegister(UNW_ARM64_X26, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_X27_X28_PAIR) { registers.setRegister(UNW_ARM64_X27, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setRegister(UNW_ARM64_X28, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_D8_D9_PAIR) { registers.setFloatRegister(UNW_ARM64_D8, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setFloatRegister(UNW_ARM64_D9, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_D10_D11_PAIR) { registers.setFloatRegister(UNW_ARM64_D10, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setFloatRegister(UNW_ARM64_D11, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_D12_D13_PAIR) { registers.setFloatRegister(UNW_ARM64_D12, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setFloatRegister(UNW_ARM64_D13, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_D14_D15_PAIR) { registers.setFloatRegister(UNW_ARM64_D14, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setFloatRegister(UNW_ARM64_D15, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; } // subtract stack size off of sp registers.setSP(savedRegisterLoc); // set pc to be value in lr registers.setIP(registers.getRegister(UNW_ARM64_LR)); return UNW_STEP_SUCCESS; } template int CompactUnwinder_arm64::stepWithCompactEncodingFrame( compact_unwind_encoding_t encoding, uint64_t, A &addressSpace, Registers_arm64 ®isters) { uint64_t savedRegisterLoc = registers.getFP() - 8; if (encoding & UNWIND_ARM64_FRAME_X19_X20_PAIR) { registers.setRegister(UNW_ARM64_X19, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setRegister(UNW_ARM64_X20, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_X21_X22_PAIR) { registers.setRegister(UNW_ARM64_X21, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setRegister(UNW_ARM64_X22, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_X23_X24_PAIR) { registers.setRegister(UNW_ARM64_X23, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setRegister(UNW_ARM64_X24, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_X25_X26_PAIR) { registers.setRegister(UNW_ARM64_X25, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setRegister(UNW_ARM64_X26, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_X27_X28_PAIR) { registers.setRegister(UNW_ARM64_X27, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setRegister(UNW_ARM64_X28, addressSpace.get64(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_D8_D9_PAIR) { registers.setFloatRegister(UNW_ARM64_D8, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setFloatRegister(UNW_ARM64_D9, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_D10_D11_PAIR) { registers.setFloatRegister(UNW_ARM64_D10, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setFloatRegister(UNW_ARM64_D11, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_D12_D13_PAIR) { registers.setFloatRegister(UNW_ARM64_D12, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setFloatRegister(UNW_ARM64_D13, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; } if (encoding & UNWIND_ARM64_FRAME_D14_D15_PAIR) { registers.setFloatRegister(UNW_ARM64_D14, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; registers.setFloatRegister(UNW_ARM64_D15, addressSpace.getDouble(savedRegisterLoc)); savedRegisterLoc -= 8; } uint64_t fp = registers.getFP(); // fp points to old fp registers.setFP(addressSpace.get64(fp)); // old sp is fp less saved fp and lr registers.setSP(fp + 16); // pop return address into pc registers.setIP(addressSpace.get64(fp + 8)); return UNW_STEP_SUCCESS; } #endif // _LIBUNWIND_TARGET_AARCH64 } // namespace libunwind #endif // __COMPACT_UNWINDER_HPP__ Index: projects/clang900-import/contrib/libunwind/src/DwarfInstructions.hpp =================================================================== --- projects/clang900-import/contrib/libunwind/src/DwarfInstructions.hpp (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/DwarfInstructions.hpp (revision 351404) @@ -1,820 +1,818 @@ //===-------------------------- DwarfInstructions.hpp ---------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // Processor specific interpretation of DWARF unwind info. // //===----------------------------------------------------------------------===// #ifndef __DWARF_INSTRUCTIONS_HPP__ #define __DWARF_INSTRUCTIONS_HPP__ #include #include #include #include "dwarf2.h" #include "Registers.hpp" #include "DwarfParser.hpp" #include "config.h" namespace libunwind { /// DwarfInstructions maps abtract DWARF unwind instructions to a particular /// architecture template class DwarfInstructions { public: typedef typename A::pint_t pint_t; typedef typename A::sint_t sint_t; static int stepWithDwarf(A &addressSpace, pint_t pc, pint_t fdeStart, R ®isters); private: enum { DW_X86_64_RET_ADDR = 16 }; enum { DW_X86_RET_ADDR = 8 }; typedef typename CFI_Parser::RegisterLocation RegisterLocation; typedef typename CFI_Parser::PrologInfo PrologInfo; typedef typename CFI_Parser::FDE_Info FDE_Info; typedef typename CFI_Parser::CIE_Info CIE_Info; static pint_t evaluateExpression(pint_t expression, A &addressSpace, const R ®isters, pint_t initialStackValue); static pint_t getSavedRegister(A &addressSpace, const R ®isters, pint_t cfa, const RegisterLocation &savedReg); static double getSavedFloatRegister(A &addressSpace, const R ®isters, pint_t cfa, const RegisterLocation &savedReg); static v128 getSavedVectorRegister(A &addressSpace, const R ®isters, pint_t cfa, const RegisterLocation &savedReg); static pint_t getCFA(A &addressSpace, const PrologInfo &prolog, const R ®isters) { if (prolog.cfaRegister != 0) return (pint_t)((sint_t)registers.getRegister((int)prolog.cfaRegister) + prolog.cfaRegisterOffset); if (prolog.cfaExpression != 0) return evaluateExpression((pint_t)prolog.cfaExpression, addressSpace, registers, 0); assert(0 && "getCFA(): unknown location"); __builtin_unreachable(); } }; template typename A::pint_t DwarfInstructions::getSavedRegister( A &addressSpace, const R ®isters, pint_t cfa, const RegisterLocation &savedReg) { switch (savedReg.location) { case CFI_Parser::kRegisterInCFA: - return addressSpace.getRegister(cfa + (pint_t)savedReg.value); + return (pint_t)addressSpace.getRegister(cfa + (pint_t)savedReg.value); case CFI_Parser::kRegisterAtExpression: - return addressSpace.getRegister( - evaluateExpression((pint_t)savedReg.value, addressSpace, - registers, cfa)); + return (pint_t)addressSpace.getRegister(evaluateExpression( + (pint_t)savedReg.value, addressSpace, registers, cfa)); case CFI_Parser::kRegisterIsExpression: return evaluateExpression((pint_t)savedReg.value, addressSpace, registers, cfa); case CFI_Parser::kRegisterInRegister: return registers.getRegister((int)savedReg.value); case CFI_Parser::kRegisterUnused: case CFI_Parser::kRegisterOffsetFromCFA: // FIX ME break; } _LIBUNWIND_ABORT("unsupported restore location for register"); } template double DwarfInstructions::getSavedFloatRegister( A &addressSpace, const R ®isters, pint_t cfa, const RegisterLocation &savedReg) { switch (savedReg.location) { case CFI_Parser::kRegisterInCFA: return addressSpace.getDouble(cfa + (pint_t)savedReg.value); case CFI_Parser::kRegisterAtExpression: return addressSpace.getDouble( evaluateExpression((pint_t)savedReg.value, addressSpace, registers, cfa)); case CFI_Parser::kRegisterIsExpression: case CFI_Parser::kRegisterUnused: case CFI_Parser::kRegisterOffsetFromCFA: case CFI_Parser::kRegisterInRegister: // FIX ME break; } _LIBUNWIND_ABORT("unsupported restore location for float register"); } template v128 DwarfInstructions::getSavedVectorRegister( A &addressSpace, const R ®isters, pint_t cfa, const RegisterLocation &savedReg) { switch (savedReg.location) { case CFI_Parser::kRegisterInCFA: return addressSpace.getVector(cfa + (pint_t)savedReg.value); case CFI_Parser::kRegisterAtExpression: return addressSpace.getVector( evaluateExpression((pint_t)savedReg.value, addressSpace, registers, cfa)); case CFI_Parser::kRegisterIsExpression: case CFI_Parser::kRegisterUnused: case CFI_Parser::kRegisterOffsetFromCFA: case CFI_Parser::kRegisterInRegister: // FIX ME break; } _LIBUNWIND_ABORT("unsupported restore location for vector register"); } template int DwarfInstructions::stepWithDwarf(A &addressSpace, pint_t pc, pint_t fdeStart, R ®isters) { FDE_Info fdeInfo; CIE_Info cieInfo; if (CFI_Parser::decodeFDE(addressSpace, fdeStart, &fdeInfo, &cieInfo) == NULL) { PrologInfo prolog; if (CFI_Parser::parseFDEInstructions(addressSpace, fdeInfo, cieInfo, pc, R::getArch(), &prolog)) { // get pointer to cfa (architecture specific) pint_t cfa = getCFA(addressSpace, prolog, registers); // restore registers that DWARF says were saved R newRegisters = registers; pint_t returnAddress = 0; const int lastReg = R::lastDwarfRegNum(); assert(static_cast(CFI_Parser::kMaxRegisterNumber) >= lastReg && "register range too large"); assert(lastReg >= (int)cieInfo.returnAddressRegister && "register range does not contain return address register"); for (int i = 0; i <= lastReg; ++i) { if (prolog.savedRegisters[i].location != CFI_Parser::kRegisterUnused) { if (registers.validFloatRegister(i)) newRegisters.setFloatRegister( i, getSavedFloatRegister(addressSpace, registers, cfa, prolog.savedRegisters[i])); else if (registers.validVectorRegister(i)) newRegisters.setVectorRegister( i, getSavedVectorRegister(addressSpace, registers, cfa, prolog.savedRegisters[i])); else if (i == (int)cieInfo.returnAddressRegister) returnAddress = getSavedRegister(addressSpace, registers, cfa, prolog.savedRegisters[i]); else if (registers.validRegister(i)) newRegisters.setRegister( i, getSavedRegister(addressSpace, registers, cfa, prolog.savedRegisters[i])); else return UNW_EBADREG; } } // By definition, the CFA is the stack pointer at the call site, so // restoring SP means setting it to CFA. newRegisters.setSP(cfa); #if defined(_LIBUNWIND_TARGET_AARCH64) // If the target is aarch64 then the return address may have been signed // using the v8.3 pointer authentication extensions. The original // return address needs to be authenticated before the return address is // restored. autia1716 is used instead of autia as autia1716 assembles // to a NOP on pre-v8.3a architectures. if ((R::getArch() == REGISTERS_ARM64) && prolog.savedRegisters[UNW_ARM64_RA_SIGN_STATE].value) { #if !defined(_LIBUNWIND_IS_NATIVE_ONLY) return UNW_ECROSSRASIGNING; #else register unsigned long long x17 __asm("x17") = returnAddress; register unsigned long long x16 __asm("x16") = cfa; // These are the autia1716/autib1716 instructions. The hint instructions // are used here as gcc does not assemble autia1716/autib1716 for pre // armv8.3a targets. if (cieInfo.addressesSignedWithBKey) asm("hint 0xe" : "+r"(x17) : "r"(x16)); // autib1716 else asm("hint 0xc" : "+r"(x17) : "r"(x16)); // autia1716 returnAddress = x17; #endif } #endif #if defined(_LIBUNWIND_TARGET_SPARC) if (R::getArch() == REGISTERS_SPARC) { // Skip call site instruction and delay slot returnAddress += 8; // Skip unimp instruction if function returns a struct if ((addressSpace.get32(returnAddress) & 0xC1C00000) == 0) returnAddress += 4; } #endif #if defined(_LIBUNWIND_TARGET_PPC64) #define PPC64_ELFV1_R2_LOAD_INST_ENCODING 0xe8410028u // ld r2,40(r1) #define PPC64_ELFV1_R2_OFFSET 40 #define PPC64_ELFV2_R2_LOAD_INST_ENCODING 0xe8410018u // ld r2,24(r1) #define PPC64_ELFV2_R2_OFFSET 24 // If the instruction at return address is a TOC (r2) restore, // then r2 was saved and needs to be restored. // ELFv2 ABI specifies that the TOC Pointer must be saved at SP + 24, // while in ELFv1 ABI it is saved at SP + 40. if (R::getArch() == REGISTERS_PPC64 && returnAddress != 0) { pint_t sp = newRegisters.getRegister(UNW_REG_SP); pint_t r2 = 0; switch (addressSpace.get32(returnAddress)) { case PPC64_ELFV1_R2_LOAD_INST_ENCODING: r2 = addressSpace.get64(sp + PPC64_ELFV1_R2_OFFSET); break; case PPC64_ELFV2_R2_LOAD_INST_ENCODING: r2 = addressSpace.get64(sp + PPC64_ELFV2_R2_OFFSET); break; } if (r2) newRegisters.setRegister(UNW_PPC64_R2, r2); } #endif // Return address is address after call site instruction, so setting IP to // that does simualates a return. newRegisters.setIP(returnAddress); // Simulate the step by replacing the register set with the new ones. registers = newRegisters; return UNW_STEP_SUCCESS; } } return UNW_EBADFRAME; } template typename A::pint_t DwarfInstructions::evaluateExpression(pint_t expression, A &addressSpace, const R ®isters, pint_t initialStackValue) { const bool log = false; pint_t p = expression; pint_t expressionEnd = expression + 20; // temp, until len read pint_t length = (pint_t)addressSpace.getULEB128(p, expressionEnd); expressionEnd = p + length; if (log) fprintf(stderr, "evaluateExpression(): length=%" PRIu64 "\n", (uint64_t)length); pint_t stack[100]; pint_t *sp = stack; *(++sp) = initialStackValue; while (p < expressionEnd) { if (log) { for (pint_t *t = sp; t > stack; --t) { fprintf(stderr, "sp[] = 0x%" PRIx64 "\n", (uint64_t)(*t)); } } uint8_t opcode = addressSpace.get8(p++); sint_t svalue, svalue2; pint_t value; uint32_t reg; switch (opcode) { case DW_OP_addr: // push immediate address sized value value = addressSpace.getP(p); p += sizeof(pint_t); *(++sp) = value; if (log) fprintf(stderr, "push 0x%" PRIx64 "\n", (uint64_t)value); break; case DW_OP_deref: // pop stack, dereference, push result value = *sp--; *(++sp) = addressSpace.getP(value); if (log) fprintf(stderr, "dereference 0x%" PRIx64 "\n", (uint64_t)value); break; case DW_OP_const1u: // push immediate 1 byte value value = addressSpace.get8(p); p += 1; *(++sp) = value; if (log) fprintf(stderr, "push 0x%" PRIx64 "\n", (uint64_t)value); break; case DW_OP_const1s: // push immediate 1 byte signed value svalue = (int8_t) addressSpace.get8(p); p += 1; *(++sp) = (pint_t)svalue; if (log) fprintf(stderr, "push 0x%" PRIx64 "\n", (uint64_t)svalue); break; case DW_OP_const2u: // push immediate 2 byte value value = addressSpace.get16(p); p += 2; *(++sp) = value; if (log) fprintf(stderr, "push 0x%" PRIx64 "\n", (uint64_t)value); break; case DW_OP_const2s: // push immediate 2 byte signed value svalue = (int16_t) addressSpace.get16(p); p += 2; *(++sp) = (pint_t)svalue; if (log) fprintf(stderr, "push 0x%" PRIx64 "\n", (uint64_t)svalue); break; case DW_OP_const4u: // push immediate 4 byte value value = addressSpace.get32(p); p += 4; *(++sp) = value; if (log) fprintf(stderr, "push 0x%" PRIx64 "\n", (uint64_t)value); break; case DW_OP_const4s: // push immediate 4 byte signed value svalue = (int32_t)addressSpace.get32(p); p += 4; *(++sp) = (pint_t)svalue; if (log) fprintf(stderr, "push 0x%" PRIx64 "\n", (uint64_t)svalue); break; case DW_OP_const8u: // push immediate 8 byte value value = (pint_t)addressSpace.get64(p); p += 8; *(++sp) = value; if (log) fprintf(stderr, "push 0x%" PRIx64 "\n", (uint64_t)value); break; case DW_OP_const8s: // push immediate 8 byte signed value value = (pint_t)addressSpace.get64(p); p += 8; *(++sp) = value; if (log) fprintf(stderr, "push 0x%" PRIx64 "\n", (uint64_t)value); break; case DW_OP_constu: // push immediate ULEB128 value value = (pint_t)addressSpace.getULEB128(p, expressionEnd); *(++sp) = value; if (log) fprintf(stderr, "push 0x%" PRIx64 "\n", (uint64_t)value); break; case DW_OP_consts: // push immediate SLEB128 value svalue = (sint_t)addressSpace.getSLEB128(p, expressionEnd); *(++sp) = (pint_t)svalue; if (log) fprintf(stderr, "push 0x%" PRIx64 "\n", (uint64_t)svalue); break; case DW_OP_dup: // push top of stack value = *sp; *(++sp) = value; if (log) fprintf(stderr, "duplicate top of stack\n"); break; case DW_OP_drop: // pop --sp; if (log) fprintf(stderr, "pop top of stack\n"); break; case DW_OP_over: // dup second value = sp[-1]; *(++sp) = value; if (log) fprintf(stderr, "duplicate second in stack\n"); break; case DW_OP_pick: // pick from reg = addressSpace.get8(p); p += 1; value = sp[-reg]; *(++sp) = value; if (log) fprintf(stderr, "duplicate %d in stack\n", reg); break; case DW_OP_swap: // swap top two value = sp[0]; sp[0] = sp[-1]; sp[-1] = value; if (log) fprintf(stderr, "swap top of stack\n"); break; case DW_OP_rot: // rotate top three value = sp[0]; sp[0] = sp[-1]; sp[-1] = sp[-2]; sp[-2] = value; if (log) fprintf(stderr, "rotate top three of stack\n"); break; case DW_OP_xderef: // pop stack, dereference, push result value = *sp--; *sp = *((pint_t*)value); if (log) fprintf(stderr, "x-dereference 0x%" PRIx64 "\n", (uint64_t)value); break; case DW_OP_abs: svalue = (sint_t)*sp; if (svalue < 0) *sp = (pint_t)(-svalue); if (log) fprintf(stderr, "abs\n"); break; case DW_OP_and: value = *sp--; *sp &= value; if (log) fprintf(stderr, "and\n"); break; case DW_OP_div: svalue = (sint_t)(*sp--); svalue2 = (sint_t)*sp; *sp = (pint_t)(svalue2 / svalue); if (log) fprintf(stderr, "div\n"); break; case DW_OP_minus: value = *sp--; *sp = *sp - value; if (log) fprintf(stderr, "minus\n"); break; case DW_OP_mod: svalue = (sint_t)(*sp--); svalue2 = (sint_t)*sp; *sp = (pint_t)(svalue2 % svalue); if (log) fprintf(stderr, "module\n"); break; case DW_OP_mul: svalue = (sint_t)(*sp--); svalue2 = (sint_t)*sp; *sp = (pint_t)(svalue2 * svalue); if (log) fprintf(stderr, "mul\n"); break; case DW_OP_neg: *sp = 0 - *sp; if (log) fprintf(stderr, "neg\n"); break; case DW_OP_not: svalue = (sint_t)(*sp); *sp = (pint_t)(~svalue); if (log) fprintf(stderr, "not\n"); break; case DW_OP_or: value = *sp--; *sp |= value; if (log) fprintf(stderr, "or\n"); break; case DW_OP_plus: value = *sp--; *sp += value; if (log) fprintf(stderr, "plus\n"); break; case DW_OP_plus_uconst: // pop stack, add uelb128 constant, push result *sp += static_cast(addressSpace.getULEB128(p, expressionEnd)); if (log) fprintf(stderr, "add constant\n"); break; case DW_OP_shl: value = *sp--; *sp = *sp << value; if (log) fprintf(stderr, "shift left\n"); break; case DW_OP_shr: value = *sp--; *sp = *sp >> value; if (log) fprintf(stderr, "shift left\n"); break; case DW_OP_shra: value = *sp--; svalue = (sint_t)*sp; *sp = (pint_t)(svalue >> value); if (log) fprintf(stderr, "shift left arithmetric\n"); break; case DW_OP_xor: value = *sp--; *sp ^= value; if (log) fprintf(stderr, "xor\n"); break; case DW_OP_skip: svalue = (int16_t) addressSpace.get16(p); p += 2; p = (pint_t)((sint_t)p + svalue); if (log) fprintf(stderr, "skip %" PRIu64 "\n", (uint64_t)svalue); break; case DW_OP_bra: svalue = (int16_t) addressSpace.get16(p); p += 2; if (*sp--) p = (pint_t)((sint_t)p + svalue); if (log) fprintf(stderr, "bra %" PRIu64 "\n", (uint64_t)svalue); break; case DW_OP_eq: value = *sp--; *sp = (*sp == value); if (log) fprintf(stderr, "eq\n"); break; case DW_OP_ge: value = *sp--; *sp = (*sp >= value); if (log) fprintf(stderr, "ge\n"); break; case DW_OP_gt: value = *sp--; *sp = (*sp > value); if (log) fprintf(stderr, "gt\n"); break; case DW_OP_le: value = *sp--; *sp = (*sp <= value); if (log) fprintf(stderr, "le\n"); break; case DW_OP_lt: value = *sp--; *sp = (*sp < value); if (log) fprintf(stderr, "lt\n"); break; case DW_OP_ne: value = *sp--; *sp = (*sp != value); if (log) fprintf(stderr, "ne\n"); break; case DW_OP_lit0: case DW_OP_lit1: case DW_OP_lit2: case DW_OP_lit3: case DW_OP_lit4: case DW_OP_lit5: case DW_OP_lit6: case DW_OP_lit7: case DW_OP_lit8: case DW_OP_lit9: case DW_OP_lit10: case DW_OP_lit11: case DW_OP_lit12: case DW_OP_lit13: case DW_OP_lit14: case DW_OP_lit15: case DW_OP_lit16: case DW_OP_lit17: case DW_OP_lit18: case DW_OP_lit19: case DW_OP_lit20: case DW_OP_lit21: case DW_OP_lit22: case DW_OP_lit23: case DW_OP_lit24: case DW_OP_lit25: case DW_OP_lit26: case DW_OP_lit27: case DW_OP_lit28: case DW_OP_lit29: case DW_OP_lit30: case DW_OP_lit31: value = static_cast(opcode - DW_OP_lit0); *(++sp) = value; if (log) fprintf(stderr, "push literal 0x%" PRIx64 "\n", (uint64_t)value); break; case DW_OP_reg0: case DW_OP_reg1: case DW_OP_reg2: case DW_OP_reg3: case DW_OP_reg4: case DW_OP_reg5: case DW_OP_reg6: case DW_OP_reg7: case DW_OP_reg8: case DW_OP_reg9: case DW_OP_reg10: case DW_OP_reg11: case DW_OP_reg12: case DW_OP_reg13: case DW_OP_reg14: case DW_OP_reg15: case DW_OP_reg16: case DW_OP_reg17: case DW_OP_reg18: case DW_OP_reg19: case DW_OP_reg20: case DW_OP_reg21: case DW_OP_reg22: case DW_OP_reg23: case DW_OP_reg24: case DW_OP_reg25: case DW_OP_reg26: case DW_OP_reg27: case DW_OP_reg28: case DW_OP_reg29: case DW_OP_reg30: case DW_OP_reg31: reg = static_cast(opcode - DW_OP_reg0); *(++sp) = registers.getRegister((int)reg); if (log) fprintf(stderr, "push reg %d\n", reg); break; case DW_OP_regx: reg = static_cast(addressSpace.getULEB128(p, expressionEnd)); *(++sp) = registers.getRegister((int)reg); if (log) fprintf(stderr, "push reg %d + 0x%" PRIx64 "\n", reg, (uint64_t)svalue); break; case DW_OP_breg0: case DW_OP_breg1: case DW_OP_breg2: case DW_OP_breg3: case DW_OP_breg4: case DW_OP_breg5: case DW_OP_breg6: case DW_OP_breg7: case DW_OP_breg8: case DW_OP_breg9: case DW_OP_breg10: case DW_OP_breg11: case DW_OP_breg12: case DW_OP_breg13: case DW_OP_breg14: case DW_OP_breg15: case DW_OP_breg16: case DW_OP_breg17: case DW_OP_breg18: case DW_OP_breg19: case DW_OP_breg20: case DW_OP_breg21: case DW_OP_breg22: case DW_OP_breg23: case DW_OP_breg24: case DW_OP_breg25: case DW_OP_breg26: case DW_OP_breg27: case DW_OP_breg28: case DW_OP_breg29: case DW_OP_breg30: case DW_OP_breg31: reg = static_cast(opcode - DW_OP_breg0); svalue = (sint_t)addressSpace.getSLEB128(p, expressionEnd); svalue += static_cast(registers.getRegister((int)reg)); *(++sp) = (pint_t)(svalue); if (log) fprintf(stderr, "push reg %d + 0x%" PRIx64 "\n", reg, (uint64_t)svalue); break; case DW_OP_bregx: reg = static_cast(addressSpace.getULEB128(p, expressionEnd)); svalue = (sint_t)addressSpace.getSLEB128(p, expressionEnd); svalue += static_cast(registers.getRegister((int)reg)); *(++sp) = (pint_t)(svalue); if (log) fprintf(stderr, "push reg %d + 0x%" PRIx64 "\n", reg, (uint64_t)svalue); break; case DW_OP_fbreg: _LIBUNWIND_ABORT("DW_OP_fbreg not implemented"); break; case DW_OP_piece: _LIBUNWIND_ABORT("DW_OP_piece not implemented"); break; case DW_OP_deref_size: // pop stack, dereference, push result value = *sp--; switch (addressSpace.get8(p++)) { case 1: value = addressSpace.get8(value); break; case 2: value = addressSpace.get16(value); break; case 4: value = addressSpace.get32(value); break; case 8: value = (pint_t)addressSpace.get64(value); break; default: _LIBUNWIND_ABORT("DW_OP_deref_size with bad size"); } *(++sp) = value; if (log) fprintf(stderr, "sized dereference 0x%" PRIx64 "\n", (uint64_t)value); break; case DW_OP_xderef_size: case DW_OP_nop: case DW_OP_push_object_addres: case DW_OP_call2: case DW_OP_call4: case DW_OP_call_ref: default: _LIBUNWIND_ABORT("DWARF opcode not implemented"); } } if (log) fprintf(stderr, "expression evaluates to 0x%" PRIx64 "\n", (uint64_t)*sp); return *sp; } } // namespace libunwind #endif // __DWARF_INSTRUCTIONS_HPP__ Index: projects/clang900-import/contrib/libunwind/src/DwarfParser.hpp =================================================================== --- projects/clang900-import/contrib/libunwind/src/DwarfParser.hpp (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/DwarfParser.hpp (revision 351404) @@ -1,766 +1,765 @@ //===--------------------------- DwarfParser.hpp --------------------------===// // -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // // // Parses DWARF CFIs (FDEs and CIEs). // //===----------------------------------------------------------------------===// #ifndef __DWARF_PARSER_HPP__ #define __DWARF_PARSER_HPP__ #include #include #include #include #include "libunwind.h" #include "dwarf2.h" #include "Registers.hpp" #include "config.h" namespace libunwind { /// CFI_Parser does basic parsing of a CFI (Call Frame Information) records. /// See DWARF Spec for details: /// http://refspecs.linuxbase.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/ehframechpt.html /// template class CFI_Parser { public: typedef typename A::pint_t pint_t; /// Information encoded in a CIE (Common Information Entry) struct CIE_Info { pint_t cieStart; pint_t cieLength; pint_t cieInstructions; uint8_t pointerEncoding; uint8_t lsdaEncoding; uint8_t personalityEncoding; uint8_t personalityOffsetInCIE; pint_t personality; uint32_t codeAlignFactor; int dataAlignFactor; bool isSignalFrame; bool fdesHaveAugmentationData; uint8_t returnAddressRegister; #if defined(_LIBUNWIND_TARGET_AARCH64) bool addressesSignedWithBKey; #endif }; /// Information about an FDE (Frame Description Entry) struct FDE_Info { pint_t fdeStart; pint_t fdeLength; pint_t fdeInstructions; pint_t pcStart; pint_t pcEnd; pint_t lsda; }; enum { kMaxRegisterNumber = _LIBUNWIND_HIGHEST_DWARF_REGISTER }; enum RegisterSavedWhere { kRegisterUnused, kRegisterInCFA, kRegisterOffsetFromCFA, kRegisterInRegister, kRegisterAtExpression, kRegisterIsExpression }; struct RegisterLocation { RegisterSavedWhere location; int64_t value; }; /// Information about a frame layout and registers saved determined /// by "running" the DWARF FDE "instructions" struct PrologInfo { uint32_t cfaRegister; int32_t cfaRegisterOffset; // CFA = (cfaRegister)+cfaRegisterOffset int64_t cfaExpression; // CFA = expression uint32_t spExtraArgSize; uint32_t codeOffsetAtStackDecrement; bool registersInOtherRegisters; bool sameValueUsed; RegisterLocation savedRegisters[kMaxRegisterNumber + 1]; }; struct PrologInfoStackEntry { PrologInfoStackEntry(PrologInfoStackEntry *n, const PrologInfo &i) : next(n), info(i) {} PrologInfoStackEntry *next; PrologInfo info; }; static bool findFDE(A &addressSpace, pint_t pc, pint_t ehSectionStart, uint32_t sectionLength, pint_t fdeHint, FDE_Info *fdeInfo, CIE_Info *cieInfo); static const char *decodeFDE(A &addressSpace, pint_t fdeStart, FDE_Info *fdeInfo, CIE_Info *cieInfo); static bool parseFDEInstructions(A &addressSpace, const FDE_Info &fdeInfo, const CIE_Info &cieInfo, pint_t upToPC, int arch, PrologInfo *results); static const char *parseCIE(A &addressSpace, pint_t cie, CIE_Info *cieInfo); private: static bool parseInstructions(A &addressSpace, pint_t instructions, pint_t instructionsEnd, const CIE_Info &cieInfo, pint_t pcoffset, PrologInfoStackEntry *&rememberStack, int arch, PrologInfo *results); }; /// Parse a FDE into a CIE_Info and an FDE_Info template const char *CFI_Parser::decodeFDE(A &addressSpace, pint_t fdeStart, FDE_Info *fdeInfo, CIE_Info *cieInfo) { pint_t p = fdeStart; pint_t cfiLength = (pint_t)addressSpace.get32(p); p += 4; if (cfiLength == 0xffffffff) { // 0xffffffff means length is really next 8 bytes cfiLength = (pint_t)addressSpace.get64(p); p += 8; } if (cfiLength == 0) return "FDE has zero length"; // end marker uint32_t ciePointer = addressSpace.get32(p); if (ciePointer == 0) return "FDE is really a CIE"; // this is a CIE not an FDE pint_t nextCFI = p + cfiLength; pint_t cieStart = p - ciePointer; const char *err = parseCIE(addressSpace, cieStart, cieInfo); if (err != NULL) return err; p += 4; // Parse pc begin and range. pint_t pcStart = addressSpace.getEncodedP(p, nextCFI, cieInfo->pointerEncoding); pint_t pcRange = addressSpace.getEncodedP(p, nextCFI, cieInfo->pointerEncoding & 0x0F); // Parse rest of info. fdeInfo->lsda = 0; // Check for augmentation length. if (cieInfo->fdesHaveAugmentationData) { pint_t augLen = (pint_t)addressSpace.getULEB128(p, nextCFI); pint_t endOfAug = p + augLen; if (cieInfo->lsdaEncoding != DW_EH_PE_omit) { // Peek at value (without indirection). Zero means no LSDA. pint_t lsdaStart = p; if (addressSpace.getEncodedP(p, nextCFI, cieInfo->lsdaEncoding & 0x0F) != 0) { // Reset pointer and re-parse LSDA address. p = lsdaStart; fdeInfo->lsda = addressSpace.getEncodedP(p, nextCFI, cieInfo->lsdaEncoding); } } p = endOfAug; } fdeInfo->fdeStart = fdeStart; fdeInfo->fdeLength = nextCFI - fdeStart; fdeInfo->fdeInstructions = p; fdeInfo->pcStart = pcStart; fdeInfo->pcEnd = pcStart + pcRange; return NULL; // success } /// Scan an eh_frame section to find an FDE for a pc template bool CFI_Parser::findFDE(A &addressSpace, pint_t pc, pint_t ehSectionStart, uint32_t sectionLength, pint_t fdeHint, FDE_Info *fdeInfo, CIE_Info *cieInfo) { //fprintf(stderr, "findFDE(0x%llX)\n", (long long)pc); pint_t p = (fdeHint != 0) ? fdeHint : ehSectionStart; const pint_t ehSectionEnd = p + sectionLength; while (p < ehSectionEnd) { pint_t currentCFI = p; //fprintf(stderr, "findFDE() CFI at 0x%llX\n", (long long)p); pint_t cfiLength = addressSpace.get32(p); p += 4; if (cfiLength == 0xffffffff) { // 0xffffffff means length is really next 8 bytes cfiLength = (pint_t)addressSpace.get64(p); p += 8; } if (cfiLength == 0) return false; // end marker uint32_t id = addressSpace.get32(p); if (id == 0) { // Skip over CIEs. p += cfiLength; } else { // Process FDE to see if it covers pc. pint_t nextCFI = p + cfiLength; uint32_t ciePointer = addressSpace.get32(p); pint_t cieStart = p - ciePointer; // Validate pointer to CIE is within section. if ((ehSectionStart <= cieStart) && (cieStart < ehSectionEnd)) { if (parseCIE(addressSpace, cieStart, cieInfo) == NULL) { p += 4; // Parse pc begin and range. pint_t pcStart = addressSpace.getEncodedP(p, nextCFI, cieInfo->pointerEncoding); pint_t pcRange = addressSpace.getEncodedP( p, nextCFI, cieInfo->pointerEncoding & 0x0F); // Test if pc is within the function this FDE covers. if ((pcStart < pc) && (pc <= pcStart + pcRange)) { // parse rest of info fdeInfo->lsda = 0; // check for augmentation length if (cieInfo->fdesHaveAugmentationData) { pint_t augLen = (pint_t)addressSpace.getULEB128(p, nextCFI); pint_t endOfAug = p + augLen; if (cieInfo->lsdaEncoding != DW_EH_PE_omit) { // Peek at value (without indirection). Zero means no LSDA. pint_t lsdaStart = p; if (addressSpace.getEncodedP( p, nextCFI, cieInfo->lsdaEncoding & 0x0F) != 0) { // Reset pointer and re-parse LSDA address. p = lsdaStart; fdeInfo->lsda = addressSpace .getEncodedP(p, nextCFI, cieInfo->lsdaEncoding); } } p = endOfAug; } fdeInfo->fdeStart = currentCFI; fdeInfo->fdeLength = nextCFI - currentCFI; fdeInfo->fdeInstructions = p; fdeInfo->pcStart = pcStart; fdeInfo->pcEnd = pcStart + pcRange; return true; } else { // pc is not in begin/range, skip this FDE } } else { // Malformed CIE, now augmentation describing pc range encoding. } } else { // malformed FDE. CIE is bad } p = nextCFI; } } return false; } /// Extract info from a CIE template const char *CFI_Parser::parseCIE(A &addressSpace, pint_t cie, CIE_Info *cieInfo) { cieInfo->pointerEncoding = 0; cieInfo->lsdaEncoding = DW_EH_PE_omit; cieInfo->personalityEncoding = 0; cieInfo->personalityOffsetInCIE = 0; cieInfo->personality = 0; cieInfo->codeAlignFactor = 0; cieInfo->dataAlignFactor = 0; cieInfo->isSignalFrame = false; cieInfo->fdesHaveAugmentationData = false; #if defined(_LIBUNWIND_TARGET_AARCH64) cieInfo->addressesSignedWithBKey = false; #endif cieInfo->cieStart = cie; pint_t p = cie; pint_t cieLength = (pint_t)addressSpace.get32(p); p += 4; pint_t cieContentEnd = p + cieLength; if (cieLength == 0xffffffff) { // 0xffffffff means length is really next 8 bytes cieLength = (pint_t)addressSpace.get64(p); p += 8; cieContentEnd = p + cieLength; } if (cieLength == 0) return NULL; // CIE ID is always 0 if (addressSpace.get32(p) != 0) return "CIE ID is not zero"; p += 4; // Version is always 1 or 3 uint8_t version = addressSpace.get8(p); if ((version != 1) && (version != 3)) return "CIE version is not 1 or 3"; ++p; // save start of augmentation string and find end pint_t strStart = p; while (addressSpace.get8(p) != 0) ++p; ++p; // parse code aligment factor cieInfo->codeAlignFactor = (uint32_t)addressSpace.getULEB128(p, cieContentEnd); // parse data alignment factor cieInfo->dataAlignFactor = (int)addressSpace.getSLEB128(p, cieContentEnd); // parse return address register uint64_t raReg = addressSpace.getULEB128(p, cieContentEnd); assert(raReg < 255 && "return address register too large"); cieInfo->returnAddressRegister = (uint8_t)raReg; // parse augmentation data based on augmentation string const char *result = NULL; if (addressSpace.get8(strStart) == 'z') { // parse augmentation data length addressSpace.getULEB128(p, cieContentEnd); for (pint_t s = strStart; addressSpace.get8(s) != '\0'; ++s) { switch (addressSpace.get8(s)) { case 'z': cieInfo->fdesHaveAugmentationData = true; break; case 'P': cieInfo->personalityEncoding = addressSpace.get8(p); ++p; cieInfo->personalityOffsetInCIE = (uint8_t)(p - cie); cieInfo->personality = addressSpace .getEncodedP(p, cieContentEnd, cieInfo->personalityEncoding); break; case 'L': cieInfo->lsdaEncoding = addressSpace.get8(p); ++p; break; case 'R': cieInfo->pointerEncoding = addressSpace.get8(p); ++p; break; case 'S': cieInfo->isSignalFrame = true; break; #if defined(_LIBUNWIND_TARGET_AARCH64) case 'B': cieInfo->addressesSignedWithBKey = true; break; #endif default: // ignore unknown letters break; } } } cieInfo->cieLength = cieContentEnd - cieInfo->cieStart; cieInfo->cieInstructions = p; return result; } /// "run" the DWARF instructions and create the abstact PrologInfo for an FDE template bool CFI_Parser::parseFDEInstructions(A &addressSpace, const FDE_Info &fdeInfo, const CIE_Info &cieInfo, pint_t upToPC, int arch, PrologInfo *results) { // clear results memset(results, '\0', sizeof(PrologInfo)); PrologInfoStackEntry *rememberStack = NULL; // parse CIE then FDE instructions return parseInstructions(addressSpace, cieInfo.cieInstructions, cieInfo.cieStart + cieInfo.cieLength, cieInfo, (pint_t)(-1), rememberStack, arch, results) && parseInstructions(addressSpace, fdeInfo.fdeInstructions, fdeInfo.fdeStart + fdeInfo.fdeLength, cieInfo, upToPC - fdeInfo.pcStart, rememberStack, arch, results); } /// "run" the DWARF instructions template bool CFI_Parser::parseInstructions(A &addressSpace, pint_t instructions, pint_t instructionsEnd, const CIE_Info &cieInfo, pint_t pcoffset, PrologInfoStackEntry *&rememberStack, int arch, PrologInfo *results) { pint_t p = instructions; pint_t codeOffset = 0; PrologInfo initialState = *results; _LIBUNWIND_TRACE_DWARF("parseInstructions(instructions=0x%0" PRIx64 ")\n", static_cast(instructionsEnd)); // see DWARF Spec, section 6.4.2 for details on unwind opcodes while ((p < instructionsEnd) && (codeOffset < pcoffset)) { uint64_t reg; uint64_t reg2; int64_t offset; uint64_t length; uint8_t opcode = addressSpace.get8(p); uint8_t operand; #if !defined(_LIBUNWIND_NO_HEAP) PrologInfoStackEntry *entry; #endif ++p; switch (opcode) { case DW_CFA_nop: _LIBUNWIND_TRACE_DWARF("DW_CFA_nop\n"); break; case DW_CFA_set_loc: codeOffset = addressSpace.getEncodedP(p, instructionsEnd, cieInfo.pointerEncoding); _LIBUNWIND_TRACE_DWARF("DW_CFA_set_loc\n"); break; case DW_CFA_advance_loc1: codeOffset += (addressSpace.get8(p) * cieInfo.codeAlignFactor); p += 1; _LIBUNWIND_TRACE_DWARF("DW_CFA_advance_loc1: new offset=%" PRIu64 "\n", static_cast(codeOffset)); break; case DW_CFA_advance_loc2: codeOffset += (addressSpace.get16(p) * cieInfo.codeAlignFactor); p += 2; _LIBUNWIND_TRACE_DWARF("DW_CFA_advance_loc2: new offset=%" PRIu64 "\n", static_cast(codeOffset)); break; case DW_CFA_advance_loc4: codeOffset += (addressSpace.get32(p) * cieInfo.codeAlignFactor); p += 4; _LIBUNWIND_TRACE_DWARF("DW_CFA_advance_loc4: new offset=%" PRIu64 "\n", static_cast(codeOffset)); break; case DW_CFA_offset_extended: reg = addressSpace.getULEB128(p, instructionsEnd); offset = (int64_t)addressSpace.getULEB128(p, instructionsEnd) * cieInfo.dataAlignFactor; if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG0( "malformed DW_CFA_offset_extended DWARF unwind, reg too big"); return false; } results->savedRegisters[reg].location = kRegisterInCFA; results->savedRegisters[reg].value = offset; _LIBUNWIND_TRACE_DWARF("DW_CFA_offset_extended(reg=%" PRIu64 ", " "offset=%" PRId64 ")\n", reg, offset); break; case DW_CFA_restore_extended: reg = addressSpace.getULEB128(p, instructionsEnd); if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG0( "malformed DW_CFA_restore_extended DWARF unwind, reg too big"); return false; } results->savedRegisters[reg] = initialState.savedRegisters[reg]; _LIBUNWIND_TRACE_DWARF("DW_CFA_restore_extended(reg=%" PRIu64 ")\n", reg); break; case DW_CFA_undefined: reg = addressSpace.getULEB128(p, instructionsEnd); if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG0( "malformed DW_CFA_undefined DWARF unwind, reg too big"); return false; } results->savedRegisters[reg].location = kRegisterUnused; _LIBUNWIND_TRACE_DWARF("DW_CFA_undefined(reg=%" PRIu64 ")\n", reg); break; case DW_CFA_same_value: reg = addressSpace.getULEB128(p, instructionsEnd); if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG0( "malformed DW_CFA_same_value DWARF unwind, reg too big"); return false; } // DW_CFA_same_value unsupported // "same value" means register was stored in frame, but its current // value has not changed, so no need to restore from frame. // We model this as if the register was never saved. results->savedRegisters[reg].location = kRegisterUnused; // set flag to disable conversion to compact unwind results->sameValueUsed = true; _LIBUNWIND_TRACE_DWARF("DW_CFA_same_value(reg=%" PRIu64 ")\n", reg); break; case DW_CFA_register: reg = addressSpace.getULEB128(p, instructionsEnd); reg2 = addressSpace.getULEB128(p, instructionsEnd); if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG0( "malformed DW_CFA_register DWARF unwind, reg too big"); return false; } if (reg2 > kMaxRegisterNumber) { _LIBUNWIND_LOG0( "malformed DW_CFA_register DWARF unwind, reg2 too big"); return false; } results->savedRegisters[reg].location = kRegisterInRegister; results->savedRegisters[reg].value = (int64_t)reg2; // set flag to disable conversion to compact unwind results->registersInOtherRegisters = true; _LIBUNWIND_TRACE_DWARF( "DW_CFA_register(reg=%" PRIu64 ", reg2=%" PRIu64 ")\n", reg, reg2); break; #if !defined(_LIBUNWIND_NO_HEAP) case DW_CFA_remember_state: // avoid operator new, because that would be an upward dependency entry = (PrologInfoStackEntry *)malloc(sizeof(PrologInfoStackEntry)); if (entry != NULL) { entry->next = rememberStack; entry->info = *results; rememberStack = entry; } else { return false; } _LIBUNWIND_TRACE_DWARF("DW_CFA_remember_state\n"); break; case DW_CFA_restore_state: if (rememberStack != NULL) { PrologInfoStackEntry *top = rememberStack; *results = top->info; rememberStack = top->next; free((char *)top); } else { return false; } _LIBUNWIND_TRACE_DWARF("DW_CFA_restore_state\n"); break; #endif case DW_CFA_def_cfa: reg = addressSpace.getULEB128(p, instructionsEnd); offset = (int64_t)addressSpace.getULEB128(p, instructionsEnd); if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG0("malformed DW_CFA_def_cfa DWARF unwind, reg too big"); return false; } results->cfaRegister = (uint32_t)reg; results->cfaRegisterOffset = (int32_t)offset; _LIBUNWIND_TRACE_DWARF( "DW_CFA_def_cfa(reg=%" PRIu64 ", offset=%" PRIu64 ")\n", reg, offset); break; case DW_CFA_def_cfa_register: reg = addressSpace.getULEB128(p, instructionsEnd); if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG0( "malformed DW_CFA_def_cfa_register DWARF unwind, reg too big"); return false; } results->cfaRegister = (uint32_t)reg; _LIBUNWIND_TRACE_DWARF("DW_CFA_def_cfa_register(%" PRIu64 ")\n", reg); break; case DW_CFA_def_cfa_offset: results->cfaRegisterOffset = (int32_t) addressSpace.getULEB128(p, instructionsEnd); results->codeOffsetAtStackDecrement = (uint32_t)codeOffset; _LIBUNWIND_TRACE_DWARF("DW_CFA_def_cfa_offset(%d)\n", results->cfaRegisterOffset); break; case DW_CFA_def_cfa_expression: results->cfaRegister = 0; results->cfaExpression = (int64_t)p; length = addressSpace.getULEB128(p, instructionsEnd); assert(length < static_cast(~0) && "pointer overflow"); p += static_cast(length); _LIBUNWIND_TRACE_DWARF("DW_CFA_def_cfa_expression(expression=0x%" PRIx64 ", length=%" PRIu64 ")\n", results->cfaExpression, length); break; case DW_CFA_expression: reg = addressSpace.getULEB128(p, instructionsEnd); if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG0( "malformed DW_CFA_expression DWARF unwind, reg too big"); return false; } results->savedRegisters[reg].location = kRegisterAtExpression; results->savedRegisters[reg].value = (int64_t)p; length = addressSpace.getULEB128(p, instructionsEnd); assert(length < static_cast(~0) && "pointer overflow"); p += static_cast(length); _LIBUNWIND_TRACE_DWARF("DW_CFA_expression(reg=%" PRIu64 ", " "expression=0x%" PRIx64 ", " "length=%" PRIu64 ")\n", reg, results->savedRegisters[reg].value, length); break; case DW_CFA_offset_extended_sf: reg = addressSpace.getULEB128(p, instructionsEnd); if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG0( "malformed DW_CFA_offset_extended_sf DWARF unwind, reg too big"); return false; } offset = addressSpace.getSLEB128(p, instructionsEnd) * cieInfo.dataAlignFactor; results->savedRegisters[reg].location = kRegisterInCFA; results->savedRegisters[reg].value = offset; _LIBUNWIND_TRACE_DWARF("DW_CFA_offset_extended_sf(reg=%" PRIu64 ", " "offset=%" PRId64 ")\n", reg, offset); break; case DW_CFA_def_cfa_sf: reg = addressSpace.getULEB128(p, instructionsEnd); offset = addressSpace.getSLEB128(p, instructionsEnd) * cieInfo.dataAlignFactor; if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG0( "malformed DW_CFA_def_cfa_sf DWARF unwind, reg too big"); return false; } results->cfaRegister = (uint32_t)reg; results->cfaRegisterOffset = (int32_t)offset; _LIBUNWIND_TRACE_DWARF("DW_CFA_def_cfa_sf(reg=%" PRIu64 ", " "offset=%" PRId64 ")\n", reg, offset); break; case DW_CFA_def_cfa_offset_sf: results->cfaRegisterOffset = (int32_t) (addressSpace.getSLEB128(p, instructionsEnd) * cieInfo.dataAlignFactor); results->codeOffsetAtStackDecrement = (uint32_t)codeOffset; _LIBUNWIND_TRACE_DWARF("DW_CFA_def_cfa_offset_sf(%d)\n", results->cfaRegisterOffset); break; case DW_CFA_val_offset: reg = addressSpace.getULEB128(p, instructionsEnd); if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG( "malformed DW_CFA_val_offset DWARF unwind, reg (%" PRIu64 ") out of range\n", reg); return false; } offset = (int64_t)addressSpace.getULEB128(p, instructionsEnd) * cieInfo.dataAlignFactor; results->savedRegisters[reg].location = kRegisterOffsetFromCFA; results->savedRegisters[reg].value = offset; _LIBUNWIND_TRACE_DWARF("DW_CFA_val_offset(reg=%" PRIu64 ", " "offset=%" PRId64 "\n", reg, offset); break; case DW_CFA_val_offset_sf: reg = addressSpace.getULEB128(p, instructionsEnd); if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG0( "malformed DW_CFA_val_offset_sf DWARF unwind, reg too big"); return false; } offset = addressSpace.getSLEB128(p, instructionsEnd) * cieInfo.dataAlignFactor; results->savedRegisters[reg].location = kRegisterOffsetFromCFA; results->savedRegisters[reg].value = offset; _LIBUNWIND_TRACE_DWARF("DW_CFA_val_offset_sf(reg=%" PRIu64 ", " "offset=%" PRId64 "\n", reg, offset); break; case DW_CFA_val_expression: reg = addressSpace.getULEB128(p, instructionsEnd); if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG0( "malformed DW_CFA_val_expression DWARF unwind, reg too big"); return false; } results->savedRegisters[reg].location = kRegisterIsExpression; results->savedRegisters[reg].value = (int64_t)p; length = addressSpace.getULEB128(p, instructionsEnd); assert(length < static_cast(~0) && "pointer overflow"); p += static_cast(length); _LIBUNWIND_TRACE_DWARF("DW_CFA_val_expression(reg=%" PRIu64 ", " "expression=0x%" PRIx64 ", length=%" PRIu64 ")\n", reg, results->savedRegisters[reg].value, length); break; case DW_CFA_GNU_args_size: length = addressSpace.getULEB128(p, instructionsEnd); results->spExtraArgSize = (uint32_t)length; _LIBUNWIND_TRACE_DWARF("DW_CFA_GNU_args_size(%" PRIu64 ")\n", length); break; case DW_CFA_GNU_negative_offset_extended: reg = addressSpace.getULEB128(p, instructionsEnd); if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG0("malformed DW_CFA_GNU_negative_offset_extended DWARF " "unwind, reg too big"); return false; } offset = (int64_t)addressSpace.getULEB128(p, instructionsEnd) * cieInfo.dataAlignFactor; results->savedRegisters[reg].location = kRegisterInCFA; results->savedRegisters[reg].value = -offset; _LIBUNWIND_TRACE_DWARF( "DW_CFA_GNU_negative_offset_extended(%" PRId64 ")\n", offset); break; #if defined(_LIBUNWIND_TARGET_AARCH64) || defined(_LIBUNWIND_TARGET_SPARC) // The same constant is used to represent different instructions on // AArch64 (negate_ra_state) and SPARC (window_save). static_assert(DW_CFA_AARCH64_negate_ra_state == DW_CFA_GNU_window_save, "uses the same constant"); case DW_CFA_AARCH64_negate_ra_state: switch (arch) { #if defined(_LIBUNWIND_TARGET_AARCH64) case REGISTERS_ARM64: results->savedRegisters[UNW_ARM64_RA_SIGN_STATE].value ^= 0x1; _LIBUNWIND_TRACE_DWARF("DW_CFA_AARCH64_negate_ra_state\n"); break; #endif #if defined(_LIBUNWIND_TARGET_SPARC) // case DW_CFA_GNU_window_save: case REGISTERS_SPARC: _LIBUNWIND_TRACE_DWARF("DW_CFA_GNU_window_save()\n"); for (reg = UNW_SPARC_O0; reg <= UNW_SPARC_O7; reg++) { results->savedRegisters[reg].location = kRegisterInRegister; results->savedRegisters[reg].value = ((int64_t)reg - UNW_SPARC_O0) + UNW_SPARC_I0; } for (reg = UNW_SPARC_L0; reg <= UNW_SPARC_I7; reg++) { results->savedRegisters[reg].location = kRegisterInCFA; results->savedRegisters[reg].value = ((int64_t)reg - UNW_SPARC_L0) * 4; } break; #endif } break; #else (void)arch; #endif default: operand = opcode & 0x3F; switch (opcode & 0xC0) { case DW_CFA_offset: reg = operand; if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG("malformed DW_CFA_offset DWARF unwind, reg (%" PRIu64 ") out of range", reg); return false; } offset = (int64_t)addressSpace.getULEB128(p, instructionsEnd) * cieInfo.dataAlignFactor; results->savedRegisters[reg].location = kRegisterInCFA; results->savedRegisters[reg].value = offset; _LIBUNWIND_TRACE_DWARF("DW_CFA_offset(reg=%d, offset=%" PRId64 ")\n", operand, offset); break; case DW_CFA_advance_loc: codeOffset += operand * cieInfo.codeAlignFactor; _LIBUNWIND_TRACE_DWARF("DW_CFA_advance_loc: new offset=%" PRIu64 "\n", static_cast(codeOffset)); break; case DW_CFA_restore: reg = operand; if (reg > kMaxRegisterNumber) { _LIBUNWIND_LOG("malformed DW_CFA_restore DWARF unwind, reg (%" PRIu64 ") out of range", reg); return false; } results->savedRegisters[reg] = initialState.savedRegisters[reg]; _LIBUNWIND_TRACE_DWARF("DW_CFA_restore(reg=%" PRIu64 ")\n", static_cast(operand)); break; default: _LIBUNWIND_TRACE_DWARF("unknown CFA opcode 0x%02X\n", opcode); return false; } } } return true; } } // namespace libunwind #endif // __DWARF_PARSER_HPP__ Index: projects/clang900-import/contrib/libunwind/src/EHHeaderParser.hpp =================================================================== --- projects/clang900-import/contrib/libunwind/src/EHHeaderParser.hpp (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/EHHeaderParser.hpp (revision 351404) @@ -1,168 +1,167 @@ //===------------------------- EHHeaderParser.hpp -------------------------===// // -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // // // Parses ELF .eh_frame_hdr sections. // //===----------------------------------------------------------------------===// #ifndef __EHHEADERPARSER_HPP__ #define __EHHEADERPARSER_HPP__ #include "libunwind.h" #include "DwarfParser.hpp" namespace libunwind { /// \brief EHHeaderParser does basic parsing of an ELF .eh_frame_hdr section. /// /// See DWARF spec for details: /// http://refspecs.linuxbase.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/ehframechpt.html /// template class EHHeaderParser { public: typedef typename A::pint_t pint_t; /// Information encoded in the EH frame header. struct EHHeaderInfo { pint_t eh_frame_ptr; size_t fde_count; pint_t table; uint8_t table_enc; }; static bool decodeEHHdr(A &addressSpace, pint_t ehHdrStart, pint_t ehHdrEnd, EHHeaderInfo &ehHdrInfo); static bool findFDE(A &addressSpace, pint_t pc, pint_t ehHdrStart, uint32_t sectionLength, typename CFI_Parser::FDE_Info *fdeInfo, typename CFI_Parser::CIE_Info *cieInfo); private: static bool decodeTableEntry(A &addressSpace, pint_t &tableEntry, pint_t ehHdrStart, pint_t ehHdrEnd, uint8_t tableEnc, typename CFI_Parser::FDE_Info *fdeInfo, typename CFI_Parser::CIE_Info *cieInfo); static size_t getTableEntrySize(uint8_t tableEnc); }; template bool EHHeaderParser::decodeEHHdr(A &addressSpace, pint_t ehHdrStart, pint_t ehHdrEnd, EHHeaderInfo &ehHdrInfo) { pint_t p = ehHdrStart; uint8_t version = addressSpace.get8(p++); if (version != 1) { _LIBUNWIND_LOG0("Unsupported .eh_frame_hdr version"); return false; } uint8_t eh_frame_ptr_enc = addressSpace.get8(p++); uint8_t fde_count_enc = addressSpace.get8(p++); ehHdrInfo.table_enc = addressSpace.get8(p++); ehHdrInfo.eh_frame_ptr = addressSpace.getEncodedP(p, ehHdrEnd, eh_frame_ptr_enc, ehHdrStart); ehHdrInfo.fde_count = fde_count_enc == DW_EH_PE_omit ? 0 : addressSpace.getEncodedP(p, ehHdrEnd, fde_count_enc, ehHdrStart); ehHdrInfo.table = p; return true; } template bool EHHeaderParser::decodeTableEntry( A &addressSpace, pint_t &tableEntry, pint_t ehHdrStart, pint_t ehHdrEnd, uint8_t tableEnc, typename CFI_Parser::FDE_Info *fdeInfo, typename CFI_Parser::CIE_Info *cieInfo) { // Have to decode the whole FDE for the PC range anyway, so just throw away // the PC start. addressSpace.getEncodedP(tableEntry, ehHdrEnd, tableEnc, ehHdrStart); pint_t fde = addressSpace.getEncodedP(tableEntry, ehHdrEnd, tableEnc, ehHdrStart); const char *message = CFI_Parser::decodeFDE(addressSpace, fde, fdeInfo, cieInfo); if (message != NULL) { _LIBUNWIND_DEBUG_LOG("EHHeaderParser::decodeTableEntry: bad fde: %s", message); return false; } return true; } template bool EHHeaderParser::findFDE(A &addressSpace, pint_t pc, pint_t ehHdrStart, uint32_t sectionLength, typename CFI_Parser::FDE_Info *fdeInfo, typename CFI_Parser::CIE_Info *cieInfo) { pint_t ehHdrEnd = ehHdrStart + sectionLength; EHHeaderParser::EHHeaderInfo hdrInfo; if (!EHHeaderParser::decodeEHHdr(addressSpace, ehHdrStart, ehHdrEnd, hdrInfo)) return false; size_t tableEntrySize = getTableEntrySize(hdrInfo.table_enc); pint_t tableEntry; size_t low = 0; for (size_t len = hdrInfo.fde_count; len > 1;) { size_t mid = low + (len / 2); tableEntry = hdrInfo.table + mid * tableEntrySize; pint_t start = addressSpace.getEncodedP(tableEntry, ehHdrEnd, hdrInfo.table_enc, ehHdrStart); if (start == pc) { low = mid; break; } else if (start < pc) { low = mid; len -= (len / 2); } else { len /= 2; } } tableEntry = hdrInfo.table + low * tableEntrySize; if (decodeTableEntry(addressSpace, tableEntry, ehHdrStart, ehHdrEnd, hdrInfo.table_enc, fdeInfo, cieInfo)) { if (pc >= fdeInfo->pcStart && pc < fdeInfo->pcEnd) return true; } return false; } template size_t EHHeaderParser::getTableEntrySize(uint8_t tableEnc) { switch (tableEnc & 0x0f) { case DW_EH_PE_sdata2: case DW_EH_PE_udata2: return 4; case DW_EH_PE_sdata4: case DW_EH_PE_udata4: return 8; case DW_EH_PE_sdata8: case DW_EH_PE_udata8: return 16; case DW_EH_PE_sleb128: case DW_EH_PE_uleb128: _LIBUNWIND_ABORT("Can't binary search on variable length encoded data."); case DW_EH_PE_omit: return 0; default: _LIBUNWIND_ABORT("Unknown DWARF encoding for search table."); } } } #endif Index: projects/clang900-import/contrib/libunwind/src/RWMutex.hpp =================================================================== --- projects/clang900-import/contrib/libunwind/src/RWMutex.hpp (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/RWMutex.hpp (revision 351404) @@ -1,77 +1,114 @@ //===----------------------------- Registers.hpp --------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // Abstract interface to shared reader/writer log, hiding platform and // configuration differences. // //===----------------------------------------------------------------------===// #ifndef __RWMUTEX_HPP__ #define __RWMUTEX_HPP__ #if defined(_WIN32) #include #elif !defined(_LIBUNWIND_HAS_NO_THREADS) #include +#if defined(__unix__) && defined(__ELF__) && defined(_LIBUNWIND_HAS_COMMENT_LIB_PRAGMA) +#pragma comment(lib, "pthread") #endif +#endif namespace libunwind { #if defined(_LIBUNWIND_HAS_NO_THREADS) class _LIBUNWIND_HIDDEN RWMutex { public: bool lock_shared() { return true; } bool unlock_shared() { return true; } bool lock() { return true; } bool unlock() { return true; } }; #elif defined(_WIN32) class _LIBUNWIND_HIDDEN RWMutex { public: bool lock_shared() { AcquireSRWLockShared(&_lock); return true; } bool unlock_shared() { ReleaseSRWLockShared(&_lock); return true; } bool lock() { AcquireSRWLockExclusive(&_lock); return true; } bool unlock() { ReleaseSRWLockExclusive(&_lock); return true; } private: SRWLOCK _lock = SRWLOCK_INIT; }; -#else +#elif !defined(LIBUNWIND_USE_WEAK_PTHREAD) class _LIBUNWIND_HIDDEN RWMutex { public: - bool lock_shared() { return pthread_rwlock_rdlock(&_lock) == 0; } + bool lock_shared() { return pthread_rwlock_rdlock(&_lock) == 0; } bool unlock_shared() { return pthread_rwlock_unlock(&_lock) == 0; } bool lock() { return pthread_rwlock_wrlock(&_lock) == 0; } bool unlock() { return pthread_rwlock_unlock(&_lock) == 0; } + +private: + pthread_rwlock_t _lock = PTHREAD_RWLOCK_INITIALIZER; +}; + +#else + +extern "C" int __attribute__((weak)) +pthread_create(pthread_t *thread, const pthread_attr_t *attr, + void *(*start_routine)(void *), void *arg); +extern "C" int __attribute__((weak)) +pthread_rwlock_rdlock(pthread_rwlock_t *lock); +extern "C" int __attribute__((weak)) +pthread_rwlock_wrlock(pthread_rwlock_t *lock); +extern "C" int __attribute__((weak)) +pthread_rwlock_unlock(pthread_rwlock_t *lock); + +// Calls to the locking functions are gated on pthread_create, and not the +// functions themselves, because the data structure should only be locked if +// another thread has been created. This is what similar libraries do. + +class _LIBUNWIND_HIDDEN RWMutex { +public: + bool lock_shared() { + return !pthread_create || (pthread_rwlock_rdlock(&_lock) == 0); + } + bool unlock_shared() { + return !pthread_create || (pthread_rwlock_unlock(&_lock) == 0); + } + bool lock() { + return !pthread_create || (pthread_rwlock_wrlock(&_lock) == 0); + } + bool unlock() { + return !pthread_create || (pthread_rwlock_unlock(&_lock) == 0); + } private: pthread_rwlock_t _lock = PTHREAD_RWLOCK_INITIALIZER; }; #endif } // namespace libunwind #endif // __RWMUTEX_HPP__ Index: projects/clang900-import/contrib/libunwind/src/Registers.hpp =================================================================== --- projects/clang900-import/contrib/libunwind/src/Registers.hpp (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/Registers.hpp (revision 351404) @@ -1,3785 +1,3784 @@ //===----------------------------- Registers.hpp --------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // Models register sets for supported processors. // //===----------------------------------------------------------------------===// #ifndef __REGISTERS_HPP__ #define __REGISTERS_HPP__ #include #include #include "libunwind.h" #include "config.h" namespace libunwind { // For emulating 128-bit registers struct v128 { uint32_t vec[4]; }; enum { REGISTERS_X86, REGISTERS_X86_64, REGISTERS_PPC, REGISTERS_PPC64, REGISTERS_ARM64, REGISTERS_ARM, REGISTERS_OR1K, REGISTERS_RISCV, REGISTERS_MIPS_O32, REGISTERS_MIPS_NEWABI, REGISTERS_SPARC, }; #if defined(_LIBUNWIND_TARGET_I386) /// Registers_x86 holds the register state of a thread in a 32-bit intel /// process. class _LIBUNWIND_HIDDEN Registers_x86 { public: Registers_x86(); Registers_x86(const void *registers); bool validRegister(int num) const; uint32_t getRegister(int num) const; void setRegister(int num, uint32_t value); bool validFloatRegister(int) const { return false; } double getFloatRegister(int num) const; void setFloatRegister(int num, double value); bool validVectorRegister(int) const { return false; } v128 getVectorRegister(int num) const; void setVectorRegister(int num, v128 value); static const char *getRegisterName(int num); void jumpto(); static int lastDwarfRegNum() { return _LIBUNWIND_HIGHEST_DWARF_REGISTER_X86; } static int getArch() { return REGISTERS_X86; } uint32_t getSP() const { return _registers.__esp; } void setSP(uint32_t value) { _registers.__esp = value; } uint32_t getIP() const { return _registers.__eip; } void setIP(uint32_t value) { _registers.__eip = value; } uint32_t getEBP() const { return _registers.__ebp; } void setEBP(uint32_t value) { _registers.__ebp = value; } uint32_t getEBX() const { return _registers.__ebx; } void setEBX(uint32_t value) { _registers.__ebx = value; } uint32_t getECX() const { return _registers.__ecx; } void setECX(uint32_t value) { _registers.__ecx = value; } uint32_t getEDX() const { return _registers.__edx; } void setEDX(uint32_t value) { _registers.__edx = value; } uint32_t getESI() const { return _registers.__esi; } void setESI(uint32_t value) { _registers.__esi = value; } uint32_t getEDI() const { return _registers.__edi; } void setEDI(uint32_t value) { _registers.__edi = value; } private: struct GPRs { unsigned int __eax; unsigned int __ebx; unsigned int __ecx; unsigned int __edx; unsigned int __edi; unsigned int __esi; unsigned int __ebp; unsigned int __esp; unsigned int __ss; unsigned int __eflags; unsigned int __eip; unsigned int __cs; unsigned int __ds; unsigned int __es; unsigned int __fs; unsigned int __gs; }; GPRs _registers; }; inline Registers_x86::Registers_x86(const void *registers) { static_assert((check_fit::does_fit), "x86 registers do not fit into unw_context_t"); memcpy(&_registers, registers, sizeof(_registers)); } inline Registers_x86::Registers_x86() { memset(&_registers, 0, sizeof(_registers)); } inline bool Registers_x86::validRegister(int regNum) const { if (regNum == UNW_REG_IP) return true; if (regNum == UNW_REG_SP) return true; if (regNum < 0) return false; if (regNum > 7) return false; return true; } inline uint32_t Registers_x86::getRegister(int regNum) const { switch (regNum) { case UNW_REG_IP: return _registers.__eip; case UNW_REG_SP: return _registers.__esp; case UNW_X86_EAX: return _registers.__eax; case UNW_X86_ECX: return _registers.__ecx; case UNW_X86_EDX: return _registers.__edx; case UNW_X86_EBX: return _registers.__ebx; #if !defined(__APPLE__) case UNW_X86_ESP: #else case UNW_X86_EBP: #endif return _registers.__ebp; #if !defined(__APPLE__) case UNW_X86_EBP: #else case UNW_X86_ESP: #endif return _registers.__esp; case UNW_X86_ESI: return _registers.__esi; case UNW_X86_EDI: return _registers.__edi; } _LIBUNWIND_ABORT("unsupported x86 register"); } inline void Registers_x86::setRegister(int regNum, uint32_t value) { switch (regNum) { case UNW_REG_IP: _registers.__eip = value; return; case UNW_REG_SP: _registers.__esp = value; return; case UNW_X86_EAX: _registers.__eax = value; return; case UNW_X86_ECX: _registers.__ecx = value; return; case UNW_X86_EDX: _registers.__edx = value; return; case UNW_X86_EBX: _registers.__ebx = value; return; #if !defined(__APPLE__) case UNW_X86_ESP: #else case UNW_X86_EBP: #endif _registers.__ebp = value; return; #if !defined(__APPLE__) case UNW_X86_EBP: #else case UNW_X86_ESP: #endif _registers.__esp = value; return; case UNW_X86_ESI: _registers.__esi = value; return; case UNW_X86_EDI: _registers.__edi = value; return; } _LIBUNWIND_ABORT("unsupported x86 register"); } inline const char *Registers_x86::getRegisterName(int regNum) { switch (regNum) { case UNW_REG_IP: return "ip"; case UNW_REG_SP: return "esp"; case UNW_X86_EAX: return "eax"; case UNW_X86_ECX: return "ecx"; case UNW_X86_EDX: return "edx"; case UNW_X86_EBX: return "ebx"; case UNW_X86_EBP: return "ebp"; case UNW_X86_ESP: return "esp"; case UNW_X86_ESI: return "esi"; case UNW_X86_EDI: return "edi"; default: return "unknown register"; } } inline double Registers_x86::getFloatRegister(int) const { _LIBUNWIND_ABORT("no x86 float registers"); } inline void Registers_x86::setFloatRegister(int, double) { _LIBUNWIND_ABORT("no x86 float registers"); } inline v128 Registers_x86::getVectorRegister(int) const { _LIBUNWIND_ABORT("no x86 vector registers"); } inline void Registers_x86::setVectorRegister(int, v128) { _LIBUNWIND_ABORT("no x86 vector registers"); } #endif // _LIBUNWIND_TARGET_I386 #if defined(_LIBUNWIND_TARGET_X86_64) /// Registers_x86_64 holds the register state of a thread in a 64-bit intel /// process. class _LIBUNWIND_HIDDEN Registers_x86_64 { public: Registers_x86_64(); Registers_x86_64(const void *registers); bool validRegister(int num) const; uint64_t getRegister(int num) const; void setRegister(int num, uint64_t value); bool validFloatRegister(int) const { return false; } double getFloatRegister(int num) const; void setFloatRegister(int num, double value); bool validVectorRegister(int) const; v128 getVectorRegister(int num) const; void setVectorRegister(int num, v128 value); static const char *getRegisterName(int num); void jumpto(); static int lastDwarfRegNum() { return _LIBUNWIND_HIGHEST_DWARF_REGISTER_X86_64; } static int getArch() { return REGISTERS_X86_64; } uint64_t getSP() const { return _registers.__rsp; } void setSP(uint64_t value) { _registers.__rsp = value; } uint64_t getIP() const { return _registers.__rip; } void setIP(uint64_t value) { _registers.__rip = value; } uint64_t getRBP() const { return _registers.__rbp; } void setRBP(uint64_t value) { _registers.__rbp = value; } uint64_t getRBX() const { return _registers.__rbx; } void setRBX(uint64_t value) { _registers.__rbx = value; } uint64_t getR12() const { return _registers.__r12; } void setR12(uint64_t value) { _registers.__r12 = value; } uint64_t getR13() const { return _registers.__r13; } void setR13(uint64_t value) { _registers.__r13 = value; } uint64_t getR14() const { return _registers.__r14; } void setR14(uint64_t value) { _registers.__r14 = value; } uint64_t getR15() const { return _registers.__r15; } void setR15(uint64_t value) { _registers.__r15 = value; } private: struct GPRs { uint64_t __rax; uint64_t __rbx; uint64_t __rcx; uint64_t __rdx; uint64_t __rdi; uint64_t __rsi; uint64_t __rbp; uint64_t __rsp; uint64_t __r8; uint64_t __r9; uint64_t __r10; uint64_t __r11; uint64_t __r12; uint64_t __r13; uint64_t __r14; uint64_t __r15; uint64_t __rip; uint64_t __rflags; uint64_t __cs; uint64_t __fs; uint64_t __gs; #if defined(_WIN64) uint64_t __padding; // 16-byte align #endif }; GPRs _registers; #if defined(_WIN64) v128 _xmm[16]; #endif }; inline Registers_x86_64::Registers_x86_64(const void *registers) { static_assert((check_fit::does_fit), "x86_64 registers do not fit into unw_context_t"); memcpy(&_registers, registers, sizeof(_registers)); } inline Registers_x86_64::Registers_x86_64() { memset(&_registers, 0, sizeof(_registers)); } inline bool Registers_x86_64::validRegister(int regNum) const { if (regNum == UNW_REG_IP) return true; if (regNum == UNW_REG_SP) return true; if (regNum < 0) return false; if (regNum > 15) return false; return true; } inline uint64_t Registers_x86_64::getRegister(int regNum) const { switch (regNum) { case UNW_REG_IP: return _registers.__rip; case UNW_REG_SP: return _registers.__rsp; case UNW_X86_64_RAX: return _registers.__rax; case UNW_X86_64_RDX: return _registers.__rdx; case UNW_X86_64_RCX: return _registers.__rcx; case UNW_X86_64_RBX: return _registers.__rbx; case UNW_X86_64_RSI: return _registers.__rsi; case UNW_X86_64_RDI: return _registers.__rdi; case UNW_X86_64_RBP: return _registers.__rbp; case UNW_X86_64_RSP: return _registers.__rsp; case UNW_X86_64_R8: return _registers.__r8; case UNW_X86_64_R9: return _registers.__r9; case UNW_X86_64_R10: return _registers.__r10; case UNW_X86_64_R11: return _registers.__r11; case UNW_X86_64_R12: return _registers.__r12; case UNW_X86_64_R13: return _registers.__r13; case UNW_X86_64_R14: return _registers.__r14; case UNW_X86_64_R15: return _registers.__r15; } _LIBUNWIND_ABORT("unsupported x86_64 register"); } inline void Registers_x86_64::setRegister(int regNum, uint64_t value) { switch (regNum) { case UNW_REG_IP: _registers.__rip = value; return; case UNW_REG_SP: _registers.__rsp = value; return; case UNW_X86_64_RAX: _registers.__rax = value; return; case UNW_X86_64_RDX: _registers.__rdx = value; return; case UNW_X86_64_RCX: _registers.__rcx = value; return; case UNW_X86_64_RBX: _registers.__rbx = value; return; case UNW_X86_64_RSI: _registers.__rsi = value; return; case UNW_X86_64_RDI: _registers.__rdi = value; return; case UNW_X86_64_RBP: _registers.__rbp = value; return; case UNW_X86_64_RSP: _registers.__rsp = value; return; case UNW_X86_64_R8: _registers.__r8 = value; return; case UNW_X86_64_R9: _registers.__r9 = value; return; case UNW_X86_64_R10: _registers.__r10 = value; return; case UNW_X86_64_R11: _registers.__r11 = value; return; case UNW_X86_64_R12: _registers.__r12 = value; return; case UNW_X86_64_R13: _registers.__r13 = value; return; case UNW_X86_64_R14: _registers.__r14 = value; return; case UNW_X86_64_R15: _registers.__r15 = value; return; } _LIBUNWIND_ABORT("unsupported x86_64 register"); } inline const char *Registers_x86_64::getRegisterName(int regNum) { switch (regNum) { case UNW_REG_IP: return "rip"; case UNW_REG_SP: return "rsp"; case UNW_X86_64_RAX: return "rax"; case UNW_X86_64_RDX: return "rdx"; case UNW_X86_64_RCX: return "rcx"; case UNW_X86_64_RBX: return "rbx"; case UNW_X86_64_RSI: return "rsi"; case UNW_X86_64_RDI: return "rdi"; case UNW_X86_64_RBP: return "rbp"; case UNW_X86_64_RSP: return "rsp"; case UNW_X86_64_R8: return "r8"; case UNW_X86_64_R9: return "r9"; case UNW_X86_64_R10: return "r10"; case UNW_X86_64_R11: return "r11"; case UNW_X86_64_R12: return "r12"; case UNW_X86_64_R13: return "r13"; case UNW_X86_64_R14: return "r14"; case UNW_X86_64_R15: return "r15"; case UNW_X86_64_XMM0: return "xmm0"; case UNW_X86_64_XMM1: return "xmm1"; case UNW_X86_64_XMM2: return "xmm2"; case UNW_X86_64_XMM3: return "xmm3"; case UNW_X86_64_XMM4: return "xmm4"; case UNW_X86_64_XMM5: return "xmm5"; case UNW_X86_64_XMM6: return "xmm6"; case UNW_X86_64_XMM7: return "xmm7"; case UNW_X86_64_XMM8: return "xmm8"; case UNW_X86_64_XMM9: return "xmm9"; case UNW_X86_64_XMM10: return "xmm10"; case UNW_X86_64_XMM11: return "xmm11"; case UNW_X86_64_XMM12: return "xmm12"; case UNW_X86_64_XMM13: return "xmm13"; case UNW_X86_64_XMM14: return "xmm14"; case UNW_X86_64_XMM15: return "xmm15"; default: return "unknown register"; } } inline double Registers_x86_64::getFloatRegister(int) const { _LIBUNWIND_ABORT("no x86_64 float registers"); } inline void Registers_x86_64::setFloatRegister(int, double) { _LIBUNWIND_ABORT("no x86_64 float registers"); } inline bool Registers_x86_64::validVectorRegister(int regNum) const { #if defined(_WIN64) if (regNum < UNW_X86_64_XMM0) return false; if (regNum > UNW_X86_64_XMM15) return false; return true; #else (void)regNum; // suppress unused parameter warning return false; #endif } inline v128 Registers_x86_64::getVectorRegister(int regNum) const { #if defined(_WIN64) assert(validVectorRegister(regNum)); return _xmm[regNum - UNW_X86_64_XMM0]; #else (void)regNum; // suppress unused parameter warning _LIBUNWIND_ABORT("no x86_64 vector registers"); #endif } inline void Registers_x86_64::setVectorRegister(int regNum, v128 value) { #if defined(_WIN64) assert(validVectorRegister(regNum)); _xmm[regNum - UNW_X86_64_XMM0] = value; #else (void)regNum; (void)value; // suppress unused parameter warnings _LIBUNWIND_ABORT("no x86_64 vector registers"); #endif } #endif // _LIBUNWIND_TARGET_X86_64 #if defined(_LIBUNWIND_TARGET_PPC) /// Registers_ppc holds the register state of a thread in a 32-bit PowerPC /// process. class _LIBUNWIND_HIDDEN Registers_ppc { public: Registers_ppc(); Registers_ppc(const void *registers); bool validRegister(int num) const; uint32_t getRegister(int num) const; void setRegister(int num, uint32_t value); bool validFloatRegister(int num) const; double getFloatRegister(int num) const; void setFloatRegister(int num, double value); bool validVectorRegister(int num) const; v128 getVectorRegister(int num) const; void setVectorRegister(int num, v128 value); static const char *getRegisterName(int num); void jumpto(); static int lastDwarfRegNum() { return _LIBUNWIND_HIGHEST_DWARF_REGISTER_PPC; } static int getArch() { return REGISTERS_PPC; } uint64_t getSP() const { return _registers.__r1; } void setSP(uint32_t value) { _registers.__r1 = value; } uint64_t getIP() const { return _registers.__srr0; } void setIP(uint32_t value) { _registers.__srr0 = value; } private: struct ppc_thread_state_t { unsigned int __srr0; /* Instruction address register (PC) */ unsigned int __srr1; /* Machine state register (supervisor) */ unsigned int __r0; unsigned int __r1; unsigned int __r2; unsigned int __r3; unsigned int __r4; unsigned int __r5; unsigned int __r6; unsigned int __r7; unsigned int __r8; unsigned int __r9; unsigned int __r10; unsigned int __r11; unsigned int __r12; unsigned int __r13; unsigned int __r14; unsigned int __r15; unsigned int __r16; unsigned int __r17; unsigned int __r18; unsigned int __r19; unsigned int __r20; unsigned int __r21; unsigned int __r22; unsigned int __r23; unsigned int __r24; unsigned int __r25; unsigned int __r26; unsigned int __r27; unsigned int __r28; unsigned int __r29; unsigned int __r30; unsigned int __r31; unsigned int __cr; /* Condition register */ unsigned int __xer; /* User's integer exception register */ unsigned int __lr; /* Link register */ unsigned int __ctr; /* Count register */ unsigned int __mq; /* MQ register (601 only) */ unsigned int __vrsave; /* Vector Save Register */ }; struct ppc_float_state_t { double __fpregs[32]; unsigned int __fpscr_pad; /* fpscr is 64 bits, 32 bits of rubbish */ unsigned int __fpscr; /* floating point status register */ }; ppc_thread_state_t _registers; ppc_float_state_t _floatRegisters; v128 _vectorRegisters[32]; // offset 424 }; inline Registers_ppc::Registers_ppc(const void *registers) { static_assert((check_fit::does_fit), "ppc registers do not fit into unw_context_t"); memcpy(&_registers, static_cast(registers), sizeof(_registers)); static_assert(sizeof(ppc_thread_state_t) == 160, "expected float register offset to be 160"); memcpy(&_floatRegisters, static_cast(registers) + sizeof(ppc_thread_state_t), sizeof(_floatRegisters)); static_assert(sizeof(ppc_thread_state_t) + sizeof(ppc_float_state_t) == 424, "expected vector register offset to be 424 bytes"); memcpy(_vectorRegisters, static_cast(registers) + sizeof(ppc_thread_state_t) + sizeof(ppc_float_state_t), sizeof(_vectorRegisters)); } inline Registers_ppc::Registers_ppc() { memset(&_registers, 0, sizeof(_registers)); memset(&_floatRegisters, 0, sizeof(_floatRegisters)); memset(&_vectorRegisters, 0, sizeof(_vectorRegisters)); } inline bool Registers_ppc::validRegister(int regNum) const { if (regNum == UNW_REG_IP) return true; if (regNum == UNW_REG_SP) return true; if (regNum == UNW_PPC_VRSAVE) return true; if (regNum < 0) return false; if (regNum <= UNW_PPC_R31) return true; if (regNum == UNW_PPC_MQ) return true; if (regNum == UNW_PPC_LR) return true; if (regNum == UNW_PPC_CTR) return true; if ((UNW_PPC_CR0 <= regNum) && (regNum <= UNW_PPC_CR7)) return true; return false; } inline uint32_t Registers_ppc::getRegister(int regNum) const { switch (regNum) { case UNW_REG_IP: return _registers.__srr0; case UNW_REG_SP: return _registers.__r1; case UNW_PPC_R0: return _registers.__r0; case UNW_PPC_R1: return _registers.__r1; case UNW_PPC_R2: return _registers.__r2; case UNW_PPC_R3: return _registers.__r3; case UNW_PPC_R4: return _registers.__r4; case UNW_PPC_R5: return _registers.__r5; case UNW_PPC_R6: return _registers.__r6; case UNW_PPC_R7: return _registers.__r7; case UNW_PPC_R8: return _registers.__r8; case UNW_PPC_R9: return _registers.__r9; case UNW_PPC_R10: return _registers.__r10; case UNW_PPC_R11: return _registers.__r11; case UNW_PPC_R12: return _registers.__r12; case UNW_PPC_R13: return _registers.__r13; case UNW_PPC_R14: return _registers.__r14; case UNW_PPC_R15: return _registers.__r15; case UNW_PPC_R16: return _registers.__r16; case UNW_PPC_R17: return _registers.__r17; case UNW_PPC_R18: return _registers.__r18; case UNW_PPC_R19: return _registers.__r19; case UNW_PPC_R20: return _registers.__r20; case UNW_PPC_R21: return _registers.__r21; case UNW_PPC_R22: return _registers.__r22; case UNW_PPC_R23: return _registers.__r23; case UNW_PPC_R24: return _registers.__r24; case UNW_PPC_R25: return _registers.__r25; case UNW_PPC_R26: return _registers.__r26; case UNW_PPC_R27: return _registers.__r27; case UNW_PPC_R28: return _registers.__r28; case UNW_PPC_R29: return _registers.__r29; case UNW_PPC_R30: return _registers.__r30; case UNW_PPC_R31: return _registers.__r31; case UNW_PPC_LR: return _registers.__lr; case UNW_PPC_CR0: return (_registers.__cr & 0xF0000000); case UNW_PPC_CR1: return (_registers.__cr & 0x0F000000); case UNW_PPC_CR2: return (_registers.__cr & 0x00F00000); case UNW_PPC_CR3: return (_registers.__cr & 0x000F0000); case UNW_PPC_CR4: return (_registers.__cr & 0x0000F000); case UNW_PPC_CR5: return (_registers.__cr & 0x00000F00); case UNW_PPC_CR6: return (_registers.__cr & 0x000000F0); case UNW_PPC_CR7: return (_registers.__cr & 0x0000000F); case UNW_PPC_VRSAVE: return _registers.__vrsave; } _LIBUNWIND_ABORT("unsupported ppc register"); } inline void Registers_ppc::setRegister(int regNum, uint32_t value) { //fprintf(stderr, "Registers_ppc::setRegister(%d, 0x%08X)\n", regNum, value); switch (regNum) { case UNW_REG_IP: _registers.__srr0 = value; return; case UNW_REG_SP: _registers.__r1 = value; return; case UNW_PPC_R0: _registers.__r0 = value; return; case UNW_PPC_R1: _registers.__r1 = value; return; case UNW_PPC_R2: _registers.__r2 = value; return; case UNW_PPC_R3: _registers.__r3 = value; return; case UNW_PPC_R4: _registers.__r4 = value; return; case UNW_PPC_R5: _registers.__r5 = value; return; case UNW_PPC_R6: _registers.__r6 = value; return; case UNW_PPC_R7: _registers.__r7 = value; return; case UNW_PPC_R8: _registers.__r8 = value; return; case UNW_PPC_R9: _registers.__r9 = value; return; case UNW_PPC_R10: _registers.__r10 = value; return; case UNW_PPC_R11: _registers.__r11 = value; return; case UNW_PPC_R12: _registers.__r12 = value; return; case UNW_PPC_R13: _registers.__r13 = value; return; case UNW_PPC_R14: _registers.__r14 = value; return; case UNW_PPC_R15: _registers.__r15 = value; return; case UNW_PPC_R16: _registers.__r16 = value; return; case UNW_PPC_R17: _registers.__r17 = value; return; case UNW_PPC_R18: _registers.__r18 = value; return; case UNW_PPC_R19: _registers.__r19 = value; return; case UNW_PPC_R20: _registers.__r20 = value; return; case UNW_PPC_R21: _registers.__r21 = value; return; case UNW_PPC_R22: _registers.__r22 = value; return; case UNW_PPC_R23: _registers.__r23 = value; return; case UNW_PPC_R24: _registers.__r24 = value; return; case UNW_PPC_R25: _registers.__r25 = value; return; case UNW_PPC_R26: _registers.__r26 = value; return; case UNW_PPC_R27: _registers.__r27 = value; return; case UNW_PPC_R28: _registers.__r28 = value; return; case UNW_PPC_R29: _registers.__r29 = value; return; case UNW_PPC_R30: _registers.__r30 = value; return; case UNW_PPC_R31: _registers.__r31 = value; return; case UNW_PPC_MQ: _registers.__mq = value; return; case UNW_PPC_LR: _registers.__lr = value; return; case UNW_PPC_CTR: _registers.__ctr = value; return; case UNW_PPC_CR0: _registers.__cr &= 0x0FFFFFFF; _registers.__cr |= (value & 0xF0000000); return; case UNW_PPC_CR1: _registers.__cr &= 0xF0FFFFFF; _registers.__cr |= (value & 0x0F000000); return; case UNW_PPC_CR2: _registers.__cr &= 0xFF0FFFFF; _registers.__cr |= (value & 0x00F00000); return; case UNW_PPC_CR3: _registers.__cr &= 0xFFF0FFFF; _registers.__cr |= (value & 0x000F0000); return; case UNW_PPC_CR4: _registers.__cr &= 0xFFFF0FFF; _registers.__cr |= (value & 0x0000F000); return; case UNW_PPC_CR5: _registers.__cr &= 0xFFFFF0FF; _registers.__cr |= (value & 0x00000F00); return; case UNW_PPC_CR6: _registers.__cr &= 0xFFFFFF0F; _registers.__cr |= (value & 0x000000F0); return; case UNW_PPC_CR7: _registers.__cr &= 0xFFFFFFF0; _registers.__cr |= (value & 0x0000000F); return; case UNW_PPC_VRSAVE: _registers.__vrsave = value; return; // not saved return; case UNW_PPC_XER: _registers.__xer = value; return; case UNW_PPC_AP: case UNW_PPC_VSCR: case UNW_PPC_SPEFSCR: // not saved return; } _LIBUNWIND_ABORT("unsupported ppc register"); } inline bool Registers_ppc::validFloatRegister(int regNum) const { if (regNum < UNW_PPC_F0) return false; if (regNum > UNW_PPC_F31) return false; return true; } inline double Registers_ppc::getFloatRegister(int regNum) const { assert(validFloatRegister(regNum)); return _floatRegisters.__fpregs[regNum - UNW_PPC_F0]; } inline void Registers_ppc::setFloatRegister(int regNum, double value) { assert(validFloatRegister(regNum)); _floatRegisters.__fpregs[regNum - UNW_PPC_F0] = value; } inline bool Registers_ppc::validVectorRegister(int regNum) const { if (regNum < UNW_PPC_V0) return false; if (regNum > UNW_PPC_V31) return false; return true; } inline v128 Registers_ppc::getVectorRegister(int regNum) const { assert(validVectorRegister(regNum)); v128 result = _vectorRegisters[regNum - UNW_PPC_V0]; return result; } inline void Registers_ppc::setVectorRegister(int regNum, v128 value) { assert(validVectorRegister(regNum)); _vectorRegisters[regNum - UNW_PPC_V0] = value; } inline const char *Registers_ppc::getRegisterName(int regNum) { switch (regNum) { case UNW_REG_IP: return "ip"; case UNW_REG_SP: return "sp"; case UNW_PPC_R0: return "r0"; case UNW_PPC_R1: return "r1"; case UNW_PPC_R2: return "r2"; case UNW_PPC_R3: return "r3"; case UNW_PPC_R4: return "r4"; case UNW_PPC_R5: return "r5"; case UNW_PPC_R6: return "r6"; case UNW_PPC_R7: return "r7"; case UNW_PPC_R8: return "r8"; case UNW_PPC_R9: return "r9"; case UNW_PPC_R10: return "r10"; case UNW_PPC_R11: return "r11"; case UNW_PPC_R12: return "r12"; case UNW_PPC_R13: return "r13"; case UNW_PPC_R14: return "r14"; case UNW_PPC_R15: return "r15"; case UNW_PPC_R16: return "r16"; case UNW_PPC_R17: return "r17"; case UNW_PPC_R18: return "r18"; case UNW_PPC_R19: return "r19"; case UNW_PPC_R20: return "r20"; case UNW_PPC_R21: return "r21"; case UNW_PPC_R22: return "r22"; case UNW_PPC_R23: return "r23"; case UNW_PPC_R24: return "r24"; case UNW_PPC_R25: return "r25"; case UNW_PPC_R26: return "r26"; case UNW_PPC_R27: return "r27"; case UNW_PPC_R28: return "r28"; case UNW_PPC_R29: return "r29"; case UNW_PPC_R30: return "r30"; case UNW_PPC_R31: return "r31"; case UNW_PPC_F0: return "fp0"; case UNW_PPC_F1: return "fp1"; case UNW_PPC_F2: return "fp2"; case UNW_PPC_F3: return "fp3"; case UNW_PPC_F4: return "fp4"; case UNW_PPC_F5: return "fp5"; case UNW_PPC_F6: return "fp6"; case UNW_PPC_F7: return "fp7"; case UNW_PPC_F8: return "fp8"; case UNW_PPC_F9: return "fp9"; case UNW_PPC_F10: return "fp10"; case UNW_PPC_F11: return "fp11"; case UNW_PPC_F12: return "fp12"; case UNW_PPC_F13: return "fp13"; case UNW_PPC_F14: return "fp14"; case UNW_PPC_F15: return "fp15"; case UNW_PPC_F16: return "fp16"; case UNW_PPC_F17: return "fp17"; case UNW_PPC_F18: return "fp18"; case UNW_PPC_F19: return "fp19"; case UNW_PPC_F20: return "fp20"; case UNW_PPC_F21: return "fp21"; case UNW_PPC_F22: return "fp22"; case UNW_PPC_F23: return "fp23"; case UNW_PPC_F24: return "fp24"; case UNW_PPC_F25: return "fp25"; case UNW_PPC_F26: return "fp26"; case UNW_PPC_F27: return "fp27"; case UNW_PPC_F28: return "fp28"; case UNW_PPC_F29: return "fp29"; case UNW_PPC_F30: return "fp30"; case UNW_PPC_F31: return "fp31"; case UNW_PPC_LR: return "lr"; default: return "unknown register"; } } #endif // _LIBUNWIND_TARGET_PPC #if defined(_LIBUNWIND_TARGET_PPC64) /// Registers_ppc64 holds the register state of a thread in a 64-bit PowerPC /// process. class _LIBUNWIND_HIDDEN Registers_ppc64 { public: Registers_ppc64(); Registers_ppc64(const void *registers); bool validRegister(int num) const; uint64_t getRegister(int num) const; void setRegister(int num, uint64_t value); bool validFloatRegister(int num) const; double getFloatRegister(int num) const; void setFloatRegister(int num, double value); bool validVectorRegister(int num) const; v128 getVectorRegister(int num) const; void setVectorRegister(int num, v128 value); static const char *getRegisterName(int num); void jumpto(); static int lastDwarfRegNum() { return _LIBUNWIND_HIGHEST_DWARF_REGISTER_PPC64; } static int getArch() { return REGISTERS_PPC64; } uint64_t getSP() const { return _registers.__r1; } void setSP(uint64_t value) { _registers.__r1 = value; } uint64_t getIP() const { return _registers.__srr0; } void setIP(uint64_t value) { _registers.__srr0 = value; } private: struct ppc64_thread_state_t { uint64_t __srr0; // Instruction address register (PC) uint64_t __srr1; // Machine state register (supervisor) uint64_t __r0; uint64_t __r1; uint64_t __r2; uint64_t __r3; uint64_t __r4; uint64_t __r5; uint64_t __r6; uint64_t __r7; uint64_t __r8; uint64_t __r9; uint64_t __r10; uint64_t __r11; uint64_t __r12; uint64_t __r13; uint64_t __r14; uint64_t __r15; uint64_t __r16; uint64_t __r17; uint64_t __r18; uint64_t __r19; uint64_t __r20; uint64_t __r21; uint64_t __r22; uint64_t __r23; uint64_t __r24; uint64_t __r25; uint64_t __r26; uint64_t __r27; uint64_t __r28; uint64_t __r29; uint64_t __r30; uint64_t __r31; uint64_t __cr; // Condition register uint64_t __xer; // User's integer exception register uint64_t __lr; // Link register uint64_t __ctr; // Count register uint64_t __vrsave; // Vector Save Register }; union ppc64_vsr_t { struct asfloat_s { double f; uint64_t v2; } asfloat; v128 v; }; ppc64_thread_state_t _registers; ppc64_vsr_t _vectorScalarRegisters[64]; static int getVectorRegNum(int num); }; inline Registers_ppc64::Registers_ppc64(const void *registers) { static_assert((check_fit::does_fit), "ppc64 registers do not fit into unw_context_t"); memcpy(&_registers, static_cast(registers), sizeof(_registers)); static_assert(sizeof(_registers) == 312, "expected vector scalar register offset to be 312"); memcpy(&_vectorScalarRegisters, static_cast(registers) + sizeof(_registers), sizeof(_vectorScalarRegisters)); static_assert(sizeof(_registers) + sizeof(_vectorScalarRegisters) == 1336, "expected vector register offset to be 1336 bytes"); } inline Registers_ppc64::Registers_ppc64() { memset(&_registers, 0, sizeof(_registers)); memset(&_vectorScalarRegisters, 0, sizeof(_vectorScalarRegisters)); } inline bool Registers_ppc64::validRegister(int regNum) const { switch (regNum) { case UNW_REG_IP: case UNW_REG_SP: case UNW_PPC64_XER: case UNW_PPC64_LR: case UNW_PPC64_CTR: case UNW_PPC64_VRSAVE: return true; } if (regNum >= UNW_PPC64_R0 && regNum <= UNW_PPC64_R31) return true; if (regNum >= UNW_PPC64_CR0 && regNum <= UNW_PPC64_CR7) return true; return false; } inline uint64_t Registers_ppc64::getRegister(int regNum) const { switch (regNum) { case UNW_REG_IP: return _registers.__srr0; case UNW_PPC64_R0: return _registers.__r0; case UNW_PPC64_R1: case UNW_REG_SP: return _registers.__r1; case UNW_PPC64_R2: return _registers.__r2; case UNW_PPC64_R3: return _registers.__r3; case UNW_PPC64_R4: return _registers.__r4; case UNW_PPC64_R5: return _registers.__r5; case UNW_PPC64_R6: return _registers.__r6; case UNW_PPC64_R7: return _registers.__r7; case UNW_PPC64_R8: return _registers.__r8; case UNW_PPC64_R9: return _registers.__r9; case UNW_PPC64_R10: return _registers.__r10; case UNW_PPC64_R11: return _registers.__r11; case UNW_PPC64_R12: return _registers.__r12; case UNW_PPC64_R13: return _registers.__r13; case UNW_PPC64_R14: return _registers.__r14; case UNW_PPC64_R15: return _registers.__r15; case UNW_PPC64_R16: return _registers.__r16; case UNW_PPC64_R17: return _registers.__r17; case UNW_PPC64_R18: return _registers.__r18; case UNW_PPC64_R19: return _registers.__r19; case UNW_PPC64_R20: return _registers.__r20; case UNW_PPC64_R21: return _registers.__r21; case UNW_PPC64_R22: return _registers.__r22; case UNW_PPC64_R23: return _registers.__r23; case UNW_PPC64_R24: return _registers.__r24; case UNW_PPC64_R25: return _registers.__r25; case UNW_PPC64_R26: return _registers.__r26; case UNW_PPC64_R27: return _registers.__r27; case UNW_PPC64_R28: return _registers.__r28; case UNW_PPC64_R29: return _registers.__r29; case UNW_PPC64_R30: return _registers.__r30; case UNW_PPC64_R31: return _registers.__r31; case UNW_PPC64_CR0: return (_registers.__cr & 0xF0000000); case UNW_PPC64_CR1: return (_registers.__cr & 0x0F000000); case UNW_PPC64_CR2: return (_registers.__cr & 0x00F00000); case UNW_PPC64_CR3: return (_registers.__cr & 0x000F0000); case UNW_PPC64_CR4: return (_registers.__cr & 0x0000F000); case UNW_PPC64_CR5: return (_registers.__cr & 0x00000F00); case UNW_PPC64_CR6: return (_registers.__cr & 0x000000F0); case UNW_PPC64_CR7: return (_registers.__cr & 0x0000000F); case UNW_PPC64_XER: return _registers.__xer; case UNW_PPC64_LR: return _registers.__lr; case UNW_PPC64_CTR: return _registers.__ctr; case UNW_PPC64_VRSAVE: return _registers.__vrsave; } _LIBUNWIND_ABORT("unsupported ppc64 register"); } inline void Registers_ppc64::setRegister(int regNum, uint64_t value) { switch (regNum) { case UNW_REG_IP: _registers.__srr0 = value; return; case UNW_PPC64_R0: _registers.__r0 = value; return; case UNW_PPC64_R1: case UNW_REG_SP: _registers.__r1 = value; return; case UNW_PPC64_R2: _registers.__r2 = value; return; case UNW_PPC64_R3: _registers.__r3 = value; return; case UNW_PPC64_R4: _registers.__r4 = value; return; case UNW_PPC64_R5: _registers.__r5 = value; return; case UNW_PPC64_R6: _registers.__r6 = value; return; case UNW_PPC64_R7: _registers.__r7 = value; return; case UNW_PPC64_R8: _registers.__r8 = value; return; case UNW_PPC64_R9: _registers.__r9 = value; return; case UNW_PPC64_R10: _registers.__r10 = value; return; case UNW_PPC64_R11: _registers.__r11 = value; return; case UNW_PPC64_R12: _registers.__r12 = value; return; case UNW_PPC64_R13: _registers.__r13 = value; return; case UNW_PPC64_R14: _registers.__r14 = value; return; case UNW_PPC64_R15: _registers.__r15 = value; return; case UNW_PPC64_R16: _registers.__r16 = value; return; case UNW_PPC64_R17: _registers.__r17 = value; return; case UNW_PPC64_R18: _registers.__r18 = value; return; case UNW_PPC64_R19: _registers.__r19 = value; return; case UNW_PPC64_R20: _registers.__r20 = value; return; case UNW_PPC64_R21: _registers.__r21 = value; return; case UNW_PPC64_R22: _registers.__r22 = value; return; case UNW_PPC64_R23: _registers.__r23 = value; return; case UNW_PPC64_R24: _registers.__r24 = value; return; case UNW_PPC64_R25: _registers.__r25 = value; return; case UNW_PPC64_R26: _registers.__r26 = value; return; case UNW_PPC64_R27: _registers.__r27 = value; return; case UNW_PPC64_R28: _registers.__r28 = value; return; case UNW_PPC64_R29: _registers.__r29 = value; return; case UNW_PPC64_R30: _registers.__r30 = value; return; case UNW_PPC64_R31: _registers.__r31 = value; return; case UNW_PPC64_CR0: _registers.__cr &= 0x0FFFFFFF; _registers.__cr |= (value & 0xF0000000); return; case UNW_PPC64_CR1: _registers.__cr &= 0xF0FFFFFF; _registers.__cr |= (value & 0x0F000000); return; case UNW_PPC64_CR2: _registers.__cr &= 0xFF0FFFFF; _registers.__cr |= (value & 0x00F00000); return; case UNW_PPC64_CR3: _registers.__cr &= 0xFFF0FFFF; _registers.__cr |= (value & 0x000F0000); return; case UNW_PPC64_CR4: _registers.__cr &= 0xFFFF0FFF; _registers.__cr |= (value & 0x0000F000); return; case UNW_PPC64_CR5: _registers.__cr &= 0xFFFFF0FF; _registers.__cr |= (value & 0x00000F00); return; case UNW_PPC64_CR6: _registers.__cr &= 0xFFFFFF0F; _registers.__cr |= (value & 0x000000F0); return; case UNW_PPC64_CR7: _registers.__cr &= 0xFFFFFFF0; _registers.__cr |= (value & 0x0000000F); return; case UNW_PPC64_XER: _registers.__xer = value; return; case UNW_PPC64_LR: _registers.__lr = value; return; case UNW_PPC64_CTR: _registers.__ctr = value; return; case UNW_PPC64_VRSAVE: _registers.__vrsave = value; return; } _LIBUNWIND_ABORT("unsupported ppc64 register"); } inline bool Registers_ppc64::validFloatRegister(int regNum) const { return regNum >= UNW_PPC64_F0 && regNum <= UNW_PPC64_F31; } inline double Registers_ppc64::getFloatRegister(int regNum) const { assert(validFloatRegister(regNum)); return _vectorScalarRegisters[regNum - UNW_PPC64_F0].asfloat.f; } inline void Registers_ppc64::setFloatRegister(int regNum, double value) { assert(validFloatRegister(regNum)); _vectorScalarRegisters[regNum - UNW_PPC64_F0].asfloat.f = value; } inline bool Registers_ppc64::validVectorRegister(int regNum) const { #ifdef PPC64_HAS_VMX if (regNum >= UNW_PPC64_VS0 && regNum <= UNW_PPC64_VS31) return true; if (regNum >= UNW_PPC64_VS32 && regNum <= UNW_PPC64_VS63) return true; #else if (regNum >= UNW_PPC64_V0 && regNum <= UNW_PPC64_V31) return true; #endif return false; } inline int Registers_ppc64::getVectorRegNum(int num) { if (num >= UNW_PPC64_VS0 && num <= UNW_PPC64_VS31) return num - UNW_PPC64_VS0; else return num - UNW_PPC64_VS32 + 32; } inline v128 Registers_ppc64::getVectorRegister(int regNum) const { assert(validVectorRegister(regNum)); return _vectorScalarRegisters[getVectorRegNum(regNum)].v; } inline void Registers_ppc64::setVectorRegister(int regNum, v128 value) { assert(validVectorRegister(regNum)); _vectorScalarRegisters[getVectorRegNum(regNum)].v = value; } inline const char *Registers_ppc64::getRegisterName(int regNum) { switch (regNum) { case UNW_REG_IP: return "ip"; case UNW_REG_SP: return "sp"; case UNW_PPC64_R0: return "r0"; case UNW_PPC64_R1: return "r1"; case UNW_PPC64_R2: return "r2"; case UNW_PPC64_R3: return "r3"; case UNW_PPC64_R4: return "r4"; case UNW_PPC64_R5: return "r5"; case UNW_PPC64_R6: return "r6"; case UNW_PPC64_R7: return "r7"; case UNW_PPC64_R8: return "r8"; case UNW_PPC64_R9: return "r9"; case UNW_PPC64_R10: return "r10"; case UNW_PPC64_R11: return "r11"; case UNW_PPC64_R12: return "r12"; case UNW_PPC64_R13: return "r13"; case UNW_PPC64_R14: return "r14"; case UNW_PPC64_R15: return "r15"; case UNW_PPC64_R16: return "r16"; case UNW_PPC64_R17: return "r17"; case UNW_PPC64_R18: return "r18"; case UNW_PPC64_R19: return "r19"; case UNW_PPC64_R20: return "r20"; case UNW_PPC64_R21: return "r21"; case UNW_PPC64_R22: return "r22"; case UNW_PPC64_R23: return "r23"; case UNW_PPC64_R24: return "r24"; case UNW_PPC64_R25: return "r25"; case UNW_PPC64_R26: return "r26"; case UNW_PPC64_R27: return "r27"; case UNW_PPC64_R28: return "r28"; case UNW_PPC64_R29: return "r29"; case UNW_PPC64_R30: return "r30"; case UNW_PPC64_R31: return "r31"; case UNW_PPC64_CR0: return "cr0"; case UNW_PPC64_CR1: return "cr1"; case UNW_PPC64_CR2: return "cr2"; case UNW_PPC64_CR3: return "cr3"; case UNW_PPC64_CR4: return "cr4"; case UNW_PPC64_CR5: return "cr5"; case UNW_PPC64_CR6: return "cr6"; case UNW_PPC64_CR7: return "cr7"; case UNW_PPC64_XER: return "xer"; case UNW_PPC64_LR: return "lr"; case UNW_PPC64_CTR: return "ctr"; case UNW_PPC64_VRSAVE: return "vrsave"; case UNW_PPC64_F0: return "fp0"; case UNW_PPC64_F1: return "fp1"; case UNW_PPC64_F2: return "fp2"; case UNW_PPC64_F3: return "fp3"; case UNW_PPC64_F4: return "fp4"; case UNW_PPC64_F5: return "fp5"; case UNW_PPC64_F6: return "fp6"; case UNW_PPC64_F7: return "fp7"; case UNW_PPC64_F8: return "fp8"; case UNW_PPC64_F9: return "fp9"; case UNW_PPC64_F10: return "fp10"; case UNW_PPC64_F11: return "fp11"; case UNW_PPC64_F12: return "fp12"; case UNW_PPC64_F13: return "fp13"; case UNW_PPC64_F14: return "fp14"; case UNW_PPC64_F15: return "fp15"; case UNW_PPC64_F16: return "fp16"; case UNW_PPC64_F17: return "fp17"; case UNW_PPC64_F18: return "fp18"; case UNW_PPC64_F19: return "fp19"; case UNW_PPC64_F20: return "fp20"; case UNW_PPC64_F21: return "fp21"; case UNW_PPC64_F22: return "fp22"; case UNW_PPC64_F23: return "fp23"; case UNW_PPC64_F24: return "fp24"; case UNW_PPC64_F25: return "fp25"; case UNW_PPC64_F26: return "fp26"; case UNW_PPC64_F27: return "fp27"; case UNW_PPC64_F28: return "fp28"; case UNW_PPC64_F29: return "fp29"; case UNW_PPC64_F30: return "fp30"; case UNW_PPC64_F31: return "fp31"; case UNW_PPC64_V0: return "v0"; case UNW_PPC64_V1: return "v1"; case UNW_PPC64_V2: return "v2"; case UNW_PPC64_V3: return "v3"; case UNW_PPC64_V4: return "v4"; case UNW_PPC64_V5: return "v5"; case UNW_PPC64_V6: return "v6"; case UNW_PPC64_V7: return "v7"; case UNW_PPC64_V8: return "v8"; case UNW_PPC64_V9: return "v9"; case UNW_PPC64_V10: return "v10"; case UNW_PPC64_V11: return "v11"; case UNW_PPC64_V12: return "v12"; case UNW_PPC64_V13: return "v13"; case UNW_PPC64_V14: return "v14"; case UNW_PPC64_V15: return "v15"; case UNW_PPC64_V16: return "v16"; case UNW_PPC64_V17: return "v17"; case UNW_PPC64_V18: return "v18"; case UNW_PPC64_V19: return "v19"; case UNW_PPC64_V20: return "v20"; case UNW_PPC64_V21: return "v21"; case UNW_PPC64_V22: return "v22"; case UNW_PPC64_V23: return "v23"; case UNW_PPC64_V24: return "v24"; case UNW_PPC64_V25: return "v25"; case UNW_PPC64_V26: return "v26"; case UNW_PPC64_V27: return "v27"; case UNW_PPC64_V28: return "v28"; case UNW_PPC64_V29: return "v29"; case UNW_PPC64_V30: return "v30"; case UNW_PPC64_V31: return "v31"; } return "unknown register"; } #endif // _LIBUNWIND_TARGET_PPC64 #if defined(_LIBUNWIND_TARGET_AARCH64) /// Registers_arm64 holds the register state of a thread in a 64-bit arm /// process. class _LIBUNWIND_HIDDEN Registers_arm64 { public: Registers_arm64(); Registers_arm64(const void *registers); bool validRegister(int num) const; uint64_t getRegister(int num) const; void setRegister(int num, uint64_t value); bool validFloatRegister(int num) const; double getFloatRegister(int num) const; void setFloatRegister(int num, double value); bool validVectorRegister(int num) const; v128 getVectorRegister(int num) const; void setVectorRegister(int num, v128 value); static const char *getRegisterName(int num); void jumpto(); static int lastDwarfRegNum() { return _LIBUNWIND_HIGHEST_DWARF_REGISTER_ARM64; } static int getArch() { return REGISTERS_ARM64; } uint64_t getSP() const { return _registers.__sp; } void setSP(uint64_t value) { _registers.__sp = value; } uint64_t getIP() const { return _registers.__pc; } void setIP(uint64_t value) { _registers.__pc = value; } uint64_t getFP() const { return _registers.__fp; } void setFP(uint64_t value) { _registers.__fp = value; } private: struct GPRs { uint64_t __x[29]; // x0-x28 uint64_t __fp; // Frame pointer x29 uint64_t __lr; // Link register x30 uint64_t __sp; // Stack pointer x31 uint64_t __pc; // Program counter uint64_t __ra_sign_state; // RA sign state register }; GPRs _registers; double _vectorHalfRegisters[32]; // Currently only the lower double in 128-bit vectore registers // is perserved during unwinding. We could define new register // numbers (> 96) which mean whole vector registers, then this // struct would need to change to contain whole vector registers. }; inline Registers_arm64::Registers_arm64(const void *registers) { static_assert((check_fit::does_fit), "arm64 registers do not fit into unw_context_t"); memcpy(&_registers, registers, sizeof(_registers)); static_assert(sizeof(GPRs) == 0x110, "expected VFP registers to be at offset 272"); memcpy(_vectorHalfRegisters, static_cast(registers) + sizeof(GPRs), sizeof(_vectorHalfRegisters)); } inline Registers_arm64::Registers_arm64() { memset(&_registers, 0, sizeof(_registers)); memset(&_vectorHalfRegisters, 0, sizeof(_vectorHalfRegisters)); } inline bool Registers_arm64::validRegister(int regNum) const { if (regNum == UNW_REG_IP) return true; if (regNum == UNW_REG_SP) return true; if (regNum < 0) return false; if (regNum > 95) return false; if (regNum == UNW_ARM64_RA_SIGN_STATE) return true; if ((regNum > 31) && (regNum < 64)) return false; return true; } inline uint64_t Registers_arm64::getRegister(int regNum) const { if (regNum == UNW_REG_IP) return _registers.__pc; if (regNum == UNW_REG_SP) return _registers.__sp; if (regNum == UNW_ARM64_RA_SIGN_STATE) return _registers.__ra_sign_state; if ((regNum >= 0) && (regNum < 32)) return _registers.__x[regNum]; _LIBUNWIND_ABORT("unsupported arm64 register"); } inline void Registers_arm64::setRegister(int regNum, uint64_t value) { if (regNum == UNW_REG_IP) _registers.__pc = value; else if (regNum == UNW_REG_SP) _registers.__sp = value; else if (regNum == UNW_ARM64_RA_SIGN_STATE) _registers.__ra_sign_state = value; else if ((regNum >= 0) && (regNum < 32)) _registers.__x[regNum] = value; else _LIBUNWIND_ABORT("unsupported arm64 register"); } inline const char *Registers_arm64::getRegisterName(int regNum) { switch (regNum) { case UNW_REG_IP: return "pc"; case UNW_REG_SP: return "sp"; case UNW_ARM64_X0: return "x0"; case UNW_ARM64_X1: return "x1"; case UNW_ARM64_X2: return "x2"; case UNW_ARM64_X3: return "x3"; case UNW_ARM64_X4: return "x4"; case UNW_ARM64_X5: return "x5"; case UNW_ARM64_X6: return "x6"; case UNW_ARM64_X7: return "x7"; case UNW_ARM64_X8: return "x8"; case UNW_ARM64_X9: return "x9"; case UNW_ARM64_X10: return "x10"; case UNW_ARM64_X11: return "x11"; case UNW_ARM64_X12: return "x12"; case UNW_ARM64_X13: return "x13"; case UNW_ARM64_X14: return "x14"; case UNW_ARM64_X15: return "x15"; case UNW_ARM64_X16: return "x16"; case UNW_ARM64_X17: return "x17"; case UNW_ARM64_X18: return "x18"; case UNW_ARM64_X19: return "x19"; case UNW_ARM64_X20: return "x20"; case UNW_ARM64_X21: return "x21"; case UNW_ARM64_X22: return "x22"; case UNW_ARM64_X23: return "x23"; case UNW_ARM64_X24: return "x24"; case UNW_ARM64_X25: return "x25"; case UNW_ARM64_X26: return "x26"; case UNW_ARM64_X27: return "x27"; case UNW_ARM64_X28: return "x28"; case UNW_ARM64_X29: return "fp"; case UNW_ARM64_X30: return "lr"; case UNW_ARM64_X31: return "sp"; case UNW_ARM64_D0: return "d0"; case UNW_ARM64_D1: return "d1"; case UNW_ARM64_D2: return "d2"; case UNW_ARM64_D3: return "d3"; case UNW_ARM64_D4: return "d4"; case UNW_ARM64_D5: return "d5"; case UNW_ARM64_D6: return "d6"; case UNW_ARM64_D7: return "d7"; case UNW_ARM64_D8: return "d8"; case UNW_ARM64_D9: return "d9"; case UNW_ARM64_D10: return "d10"; case UNW_ARM64_D11: return "d11"; case UNW_ARM64_D12: return "d12"; case UNW_ARM64_D13: return "d13"; case UNW_ARM64_D14: return "d14"; case UNW_ARM64_D15: return "d15"; case UNW_ARM64_D16: return "d16"; case UNW_ARM64_D17: return "d17"; case UNW_ARM64_D18: return "d18"; case UNW_ARM64_D19: return "d19"; case UNW_ARM64_D20: return "d20"; case UNW_ARM64_D21: return "d21"; case UNW_ARM64_D22: return "d22"; case UNW_ARM64_D23: return "d23"; case UNW_ARM64_D24: return "d24"; case UNW_ARM64_D25: return "d25"; case UNW_ARM64_D26: return "d26"; case UNW_ARM64_D27: return "d27"; case UNW_ARM64_D28: return "d28"; case UNW_ARM64_D29: return "d29"; case UNW_ARM64_D30: return "d30"; case UNW_ARM64_D31: return "d31"; default: return "unknown register"; } } inline bool Registers_arm64::validFloatRegister(int regNum) const { if (regNum < UNW_ARM64_D0) return false; if (regNum > UNW_ARM64_D31) return false; return true; } inline double Registers_arm64::getFloatRegister(int regNum) const { assert(validFloatRegister(regNum)); return _vectorHalfRegisters[regNum - UNW_ARM64_D0]; } inline void Registers_arm64::setFloatRegister(int regNum, double value) { assert(validFloatRegister(regNum)); _vectorHalfRegisters[regNum - UNW_ARM64_D0] = value; } inline bool Registers_arm64::validVectorRegister(int) const { return false; } inline v128 Registers_arm64::getVectorRegister(int) const { _LIBUNWIND_ABORT("no arm64 vector register support yet"); } inline void Registers_arm64::setVectorRegister(int, v128) { _LIBUNWIND_ABORT("no arm64 vector register support yet"); } #endif // _LIBUNWIND_TARGET_AARCH64 #if defined(_LIBUNWIND_TARGET_ARM) /// Registers_arm holds the register state of a thread in a 32-bit arm /// process. /// /// NOTE: Assumes VFPv3. On ARM processors without a floating point unit, /// this uses more memory than required. class _LIBUNWIND_HIDDEN Registers_arm { public: Registers_arm(); Registers_arm(const void *registers); bool validRegister(int num) const; uint32_t getRegister(int num) const; void setRegister(int num, uint32_t value); bool validFloatRegister(int num) const; unw_fpreg_t getFloatRegister(int num); void setFloatRegister(int num, unw_fpreg_t value); bool validVectorRegister(int num) const; v128 getVectorRegister(int num) const; void setVectorRegister(int num, v128 value); static const char *getRegisterName(int num); void jumpto() { restoreSavedFloatRegisters(); restoreCoreAndJumpTo(); } static int lastDwarfRegNum() { return _LIBUNWIND_HIGHEST_DWARF_REGISTER_ARM; } static int getArch() { return REGISTERS_ARM; } uint32_t getSP() const { return _registers.__sp; } void setSP(uint32_t value) { _registers.__sp = value; } uint32_t getIP() const { return _registers.__pc; } void setIP(uint32_t value) { _registers.__pc = value; } void saveVFPAsX() { assert(_use_X_for_vfp_save || !_saved_vfp_d0_d15); _use_X_for_vfp_save = true; } void restoreSavedFloatRegisters() { if (_saved_vfp_d0_d15) { if (_use_X_for_vfp_save) restoreVFPWithFLDMX(_vfp_d0_d15_pad); else restoreVFPWithFLDMD(_vfp_d0_d15_pad); } if (_saved_vfp_d16_d31) restoreVFPv3(_vfp_d16_d31); #if defined(__ARM_WMMX) if (_saved_iwmmx) restoreiWMMX(_iwmmx); if (_saved_iwmmx_control) restoreiWMMXControl(_iwmmx_control); #endif } private: struct GPRs { uint32_t __r[13]; // r0-r12 uint32_t __sp; // Stack pointer r13 uint32_t __lr; // Link register r14 uint32_t __pc; // Program counter r15 }; - static void saveVFPWithFSTMD(unw_fpreg_t*); - static void saveVFPWithFSTMX(unw_fpreg_t*); - static void saveVFPv3(unw_fpreg_t*); - static void restoreVFPWithFLDMD(unw_fpreg_t*); - static void restoreVFPWithFLDMX(unw_fpreg_t*); - static void restoreVFPv3(unw_fpreg_t*); + static void saveVFPWithFSTMD(void*); + static void saveVFPWithFSTMX(void*); + static void saveVFPv3(void*); + static void restoreVFPWithFLDMD(void*); + static void restoreVFPWithFLDMX(void*); + static void restoreVFPv3(void*); #if defined(__ARM_WMMX) - static void saveiWMMX(unw_fpreg_t*); + static void saveiWMMX(void*); static void saveiWMMXControl(uint32_t*); - static void restoreiWMMX(unw_fpreg_t*); + static void restoreiWMMX(void*); static void restoreiWMMXControl(uint32_t*); #endif void restoreCoreAndJumpTo(); // ARM registers GPRs _registers; // We save floating point registers lazily because we can't know ahead of // time which ones are used. See EHABI #4.7. // Whether D0-D15 are saved in the FTSMX instead of FSTMD format. // // See EHABI #7.5 that explains how matching instruction sequences for load // and store need to be used to correctly restore the exact register bits. bool _use_X_for_vfp_save; // Whether VFP D0-D15 are saved. bool _saved_vfp_d0_d15; // Whether VFPv3 D16-D31 are saved. bool _saved_vfp_d16_d31; // VFP registers D0-D15, + padding if saved using FSTMX unw_fpreg_t _vfp_d0_d15_pad[17]; // VFPv3 registers D16-D31, always saved using FSTMD unw_fpreg_t _vfp_d16_d31[16]; #if defined(__ARM_WMMX) // Whether iWMMX data registers are saved. bool _saved_iwmmx; // Whether iWMMX control registers are saved. mutable bool _saved_iwmmx_control; // iWMMX registers unw_fpreg_t _iwmmx[16]; // iWMMX control registers mutable uint32_t _iwmmx_control[4]; #endif }; inline Registers_arm::Registers_arm(const void *registers) : _use_X_for_vfp_save(false), _saved_vfp_d0_d15(false), _saved_vfp_d16_d31(false) { static_assert((check_fit::does_fit), "arm registers do not fit into unw_context_t"); - // See unw_getcontext() note about data. + // See __unw_getcontext() note about data. memcpy(&_registers, registers, sizeof(_registers)); memset(&_vfp_d0_d15_pad, 0, sizeof(_vfp_d0_d15_pad)); memset(&_vfp_d16_d31, 0, sizeof(_vfp_d16_d31)); #if defined(__ARM_WMMX) _saved_iwmmx = false; _saved_iwmmx_control = false; memset(&_iwmmx, 0, sizeof(_iwmmx)); memset(&_iwmmx_control, 0, sizeof(_iwmmx_control)); #endif } inline Registers_arm::Registers_arm() : _use_X_for_vfp_save(false), _saved_vfp_d0_d15(false), _saved_vfp_d16_d31(false) { memset(&_registers, 0, sizeof(_registers)); memset(&_vfp_d0_d15_pad, 0, sizeof(_vfp_d0_d15_pad)); memset(&_vfp_d16_d31, 0, sizeof(_vfp_d16_d31)); #if defined(__ARM_WMMX) _saved_iwmmx = false; _saved_iwmmx_control = false; memset(&_iwmmx, 0, sizeof(_iwmmx)); memset(&_iwmmx_control, 0, sizeof(_iwmmx_control)); #endif } inline bool Registers_arm::validRegister(int regNum) const { // Returns true for all non-VFP registers supported by the EHABI // virtual register set (VRS). if (regNum == UNW_REG_IP) return true; if (regNum == UNW_REG_SP) return true; if (regNum >= UNW_ARM_R0 && regNum <= UNW_ARM_R15) return true; #if defined(__ARM_WMMX) if (regNum >= UNW_ARM_WC0 && regNum <= UNW_ARM_WC3) return true; #endif return false; } inline uint32_t Registers_arm::getRegister(int regNum) const { if (regNum == UNW_REG_SP || regNum == UNW_ARM_SP) return _registers.__sp; if (regNum == UNW_ARM_LR) return _registers.__lr; if (regNum == UNW_REG_IP || regNum == UNW_ARM_IP) return _registers.__pc; if (regNum >= UNW_ARM_R0 && regNum <= UNW_ARM_R12) return _registers.__r[regNum]; #if defined(__ARM_WMMX) if (regNum >= UNW_ARM_WC0 && regNum <= UNW_ARM_WC3) { if (!_saved_iwmmx_control) { _saved_iwmmx_control = true; saveiWMMXControl(_iwmmx_control); } return _iwmmx_control[regNum - UNW_ARM_WC0]; } #endif _LIBUNWIND_ABORT("unsupported arm register"); } inline void Registers_arm::setRegister(int regNum, uint32_t value) { if (regNum == UNW_REG_SP || regNum == UNW_ARM_SP) { _registers.__sp = value; return; } if (regNum == UNW_ARM_LR) { _registers.__lr = value; return; } if (regNum == UNW_REG_IP || regNum == UNW_ARM_IP) { _registers.__pc = value; return; } if (regNum >= UNW_ARM_R0 && regNum <= UNW_ARM_R12) { _registers.__r[regNum] = value; return; } #if defined(__ARM_WMMX) if (regNum >= UNW_ARM_WC0 && regNum <= UNW_ARM_WC3) { if (!_saved_iwmmx_control) { _saved_iwmmx_control = true; saveiWMMXControl(_iwmmx_control); } _iwmmx_control[regNum - UNW_ARM_WC0] = value; return; } #endif _LIBUNWIND_ABORT("unsupported arm register"); } inline const char *Registers_arm::getRegisterName(int regNum) { switch (regNum) { case UNW_REG_IP: case UNW_ARM_IP: // UNW_ARM_R15 is alias return "pc"; case UNW_ARM_LR: // UNW_ARM_R14 is alias return "lr"; case UNW_REG_SP: case UNW_ARM_SP: // UNW_ARM_R13 is alias return "sp"; case UNW_ARM_R0: return "r0"; case UNW_ARM_R1: return "r1"; case UNW_ARM_R2: return "r2"; case UNW_ARM_R3: return "r3"; case UNW_ARM_R4: return "r4"; case UNW_ARM_R5: return "r5"; case UNW_ARM_R6: return "r6"; case UNW_ARM_R7: return "r7"; case UNW_ARM_R8: return "r8"; case UNW_ARM_R9: return "r9"; case UNW_ARM_R10: return "r10"; case UNW_ARM_R11: return "r11"; case UNW_ARM_R12: return "r12"; case UNW_ARM_S0: return "s0"; case UNW_ARM_S1: return "s1"; case UNW_ARM_S2: return "s2"; case UNW_ARM_S3: return "s3"; case UNW_ARM_S4: return "s4"; case UNW_ARM_S5: return "s5"; case UNW_ARM_S6: return "s6"; case UNW_ARM_S7: return "s7"; case UNW_ARM_S8: return "s8"; case UNW_ARM_S9: return "s9"; case UNW_ARM_S10: return "s10"; case UNW_ARM_S11: return "s11"; case UNW_ARM_S12: return "s12"; case UNW_ARM_S13: return "s13"; case UNW_ARM_S14: return "s14"; case UNW_ARM_S15: return "s15"; case UNW_ARM_S16: return "s16"; case UNW_ARM_S17: return "s17"; case UNW_ARM_S18: return "s18"; case UNW_ARM_S19: return "s19"; case UNW_ARM_S20: return "s20"; case UNW_ARM_S21: return "s21"; case UNW_ARM_S22: return "s22"; case UNW_ARM_S23: return "s23"; case UNW_ARM_S24: return "s24"; case UNW_ARM_S25: return "s25"; case UNW_ARM_S26: return "s26"; case UNW_ARM_S27: return "s27"; case UNW_ARM_S28: return "s28"; case UNW_ARM_S29: return "s29"; case UNW_ARM_S30: return "s30"; case UNW_ARM_S31: return "s31"; case UNW_ARM_D0: return "d0"; case UNW_ARM_D1: return "d1"; case UNW_ARM_D2: return "d2"; case UNW_ARM_D3: return "d3"; case UNW_ARM_D4: return "d4"; case UNW_ARM_D5: return "d5"; case UNW_ARM_D6: return "d6"; case UNW_ARM_D7: return "d7"; case UNW_ARM_D8: return "d8"; case UNW_ARM_D9: return "d9"; case UNW_ARM_D10: return "d10"; case UNW_ARM_D11: return "d11"; case UNW_ARM_D12: return "d12"; case UNW_ARM_D13: return "d13"; case UNW_ARM_D14: return "d14"; case UNW_ARM_D15: return "d15"; case UNW_ARM_D16: return "d16"; case UNW_ARM_D17: return "d17"; case UNW_ARM_D18: return "d18"; case UNW_ARM_D19: return "d19"; case UNW_ARM_D20: return "d20"; case UNW_ARM_D21: return "d21"; case UNW_ARM_D22: return "d22"; case UNW_ARM_D23: return "d23"; case UNW_ARM_D24: return "d24"; case UNW_ARM_D25: return "d25"; case UNW_ARM_D26: return "d26"; case UNW_ARM_D27: return "d27"; case UNW_ARM_D28: return "d28"; case UNW_ARM_D29: return "d29"; case UNW_ARM_D30: return "d30"; case UNW_ARM_D31: return "d31"; default: return "unknown register"; } } inline bool Registers_arm::validFloatRegister(int regNum) const { // NOTE: Consider the intel MMX registers floating points so the - // unw_get_fpreg can be used to transmit the 64-bit data back. + // __unw_get_fpreg can be used to transmit the 64-bit data back. return ((regNum >= UNW_ARM_D0) && (regNum <= UNW_ARM_D31)) #if defined(__ARM_WMMX) || ((regNum >= UNW_ARM_WR0) && (regNum <= UNW_ARM_WR15)) #endif ; } inline unw_fpreg_t Registers_arm::getFloatRegister(int regNum) { if (regNum >= UNW_ARM_D0 && regNum <= UNW_ARM_D15) { if (!_saved_vfp_d0_d15) { _saved_vfp_d0_d15 = true; if (_use_X_for_vfp_save) saveVFPWithFSTMX(_vfp_d0_d15_pad); else saveVFPWithFSTMD(_vfp_d0_d15_pad); } return _vfp_d0_d15_pad[regNum - UNW_ARM_D0]; } if (regNum >= UNW_ARM_D16 && regNum <= UNW_ARM_D31) { if (!_saved_vfp_d16_d31) { _saved_vfp_d16_d31 = true; saveVFPv3(_vfp_d16_d31); } return _vfp_d16_d31[regNum - UNW_ARM_D16]; } #if defined(__ARM_WMMX) if (regNum >= UNW_ARM_WR0 && regNum <= UNW_ARM_WR15) { if (!_saved_iwmmx) { _saved_iwmmx = true; saveiWMMX(_iwmmx); } return _iwmmx[regNum - UNW_ARM_WR0]; } #endif _LIBUNWIND_ABORT("Unknown ARM float register"); } inline void Registers_arm::setFloatRegister(int regNum, unw_fpreg_t value) { if (regNum >= UNW_ARM_D0 && regNum <= UNW_ARM_D15) { if (!_saved_vfp_d0_d15) { _saved_vfp_d0_d15 = true; if (_use_X_for_vfp_save) saveVFPWithFSTMX(_vfp_d0_d15_pad); else saveVFPWithFSTMD(_vfp_d0_d15_pad); } _vfp_d0_d15_pad[regNum - UNW_ARM_D0] = value; return; } if (regNum >= UNW_ARM_D16 && regNum <= UNW_ARM_D31) { if (!_saved_vfp_d16_d31) { _saved_vfp_d16_d31 = true; saveVFPv3(_vfp_d16_d31); } _vfp_d16_d31[regNum - UNW_ARM_D16] = value; return; } #if defined(__ARM_WMMX) if (regNum >= UNW_ARM_WR0 && regNum <= UNW_ARM_WR15) { if (!_saved_iwmmx) { _saved_iwmmx = true; saveiWMMX(_iwmmx); } _iwmmx[regNum - UNW_ARM_WR0] = value; return; } #endif _LIBUNWIND_ABORT("Unknown ARM float register"); } inline bool Registers_arm::validVectorRegister(int) const { return false; } inline v128 Registers_arm::getVectorRegister(int) const { _LIBUNWIND_ABORT("ARM vector support not implemented"); } inline void Registers_arm::setVectorRegister(int, v128) { _LIBUNWIND_ABORT("ARM vector support not implemented"); } #endif // _LIBUNWIND_TARGET_ARM #if defined(_LIBUNWIND_TARGET_OR1K) /// Registers_or1k holds the register state of a thread in an OpenRISC1000 /// process. class _LIBUNWIND_HIDDEN Registers_or1k { public: Registers_or1k(); Registers_or1k(const void *registers); bool validRegister(int num) const; uint32_t getRegister(int num) const; void setRegister(int num, uint32_t value); bool validFloatRegister(int num) const; double getFloatRegister(int num) const; void setFloatRegister(int num, double value); bool validVectorRegister(int num) const; v128 getVectorRegister(int num) const; void setVectorRegister(int num, v128 value); static const char *getRegisterName(int num); void jumpto(); static int lastDwarfRegNum() { return _LIBUNWIND_HIGHEST_DWARF_REGISTER_OR1K; } static int getArch() { return REGISTERS_OR1K; } uint64_t getSP() const { return _registers.__r[1]; } void setSP(uint32_t value) { _registers.__r[1] = value; } uint64_t getIP() const { return _registers.__pc; } void setIP(uint32_t value) { _registers.__pc = value; } private: struct or1k_thread_state_t { unsigned int __r[32]; // r0-r31 unsigned int __pc; // Program counter unsigned int __epcr; // Program counter at exception }; or1k_thread_state_t _registers; }; inline Registers_or1k::Registers_or1k(const void *registers) { static_assert((check_fit::does_fit), "or1k registers do not fit into unw_context_t"); memcpy(&_registers, static_cast(registers), sizeof(_registers)); } inline Registers_or1k::Registers_or1k() { memset(&_registers, 0, sizeof(_registers)); } inline bool Registers_or1k::validRegister(int regNum) const { if (regNum == UNW_REG_IP) return true; if (regNum == UNW_REG_SP) return true; if (regNum < 0) return false; if (regNum <= UNW_OR1K_R31) return true; if (regNum == UNW_OR1K_EPCR) return true; return false; } inline uint32_t Registers_or1k::getRegister(int regNum) const { if (regNum >= UNW_OR1K_R0 && regNum <= UNW_OR1K_R31) return _registers.__r[regNum - UNW_OR1K_R0]; switch (regNum) { case UNW_REG_IP: return _registers.__pc; case UNW_REG_SP: return _registers.__r[1]; case UNW_OR1K_EPCR: return _registers.__epcr; } _LIBUNWIND_ABORT("unsupported or1k register"); } inline void Registers_or1k::setRegister(int regNum, uint32_t value) { if (regNum >= UNW_OR1K_R0 && regNum <= UNW_OR1K_R31) { _registers.__r[regNum - UNW_OR1K_R0] = value; return; } switch (regNum) { case UNW_REG_IP: _registers.__pc = value; return; case UNW_REG_SP: _registers.__r[1] = value; return; case UNW_OR1K_EPCR: _registers.__epcr = value; return; } _LIBUNWIND_ABORT("unsupported or1k register"); } inline bool Registers_or1k::validFloatRegister(int /* regNum */) const { return false; } inline double Registers_or1k::getFloatRegister(int /* regNum */) const { _LIBUNWIND_ABORT("or1k float support not implemented"); } inline void Registers_or1k::setFloatRegister(int /* regNum */, double /* value */) { _LIBUNWIND_ABORT("or1k float support not implemented"); } inline bool Registers_or1k::validVectorRegister(int /* regNum */) const { return false; } inline v128 Registers_or1k::getVectorRegister(int /* regNum */) const { _LIBUNWIND_ABORT("or1k vector support not implemented"); } inline void Registers_or1k::setVectorRegister(int /* regNum */, v128 /* value */) { _LIBUNWIND_ABORT("or1k vector support not implemented"); } inline const char *Registers_or1k::getRegisterName(int regNum) { switch (regNum) { case UNW_OR1K_R0: return "r0"; case UNW_OR1K_R1: return "r1"; case UNW_OR1K_R2: return "r2"; case UNW_OR1K_R3: return "r3"; case UNW_OR1K_R4: return "r4"; case UNW_OR1K_R5: return "r5"; case UNW_OR1K_R6: return "r6"; case UNW_OR1K_R7: return "r7"; case UNW_OR1K_R8: return "r8"; case UNW_OR1K_R9: return "r9"; case UNW_OR1K_R10: return "r10"; case UNW_OR1K_R11: return "r11"; case UNW_OR1K_R12: return "r12"; case UNW_OR1K_R13: return "r13"; case UNW_OR1K_R14: return "r14"; case UNW_OR1K_R15: return "r15"; case UNW_OR1K_R16: return "r16"; case UNW_OR1K_R17: return "r17"; case UNW_OR1K_R18: return "r18"; case UNW_OR1K_R19: return "r19"; case UNW_OR1K_R20: return "r20"; case UNW_OR1K_R21: return "r21"; case UNW_OR1K_R22: return "r22"; case UNW_OR1K_R23: return "r23"; case UNW_OR1K_R24: return "r24"; case UNW_OR1K_R25: return "r25"; case UNW_OR1K_R26: return "r26"; case UNW_OR1K_R27: return "r27"; case UNW_OR1K_R28: return "r28"; case UNW_OR1K_R29: return "r29"; case UNW_OR1K_R30: return "r30"; case UNW_OR1K_R31: return "r31"; case UNW_OR1K_EPCR: return "EPCR"; default: return "unknown register"; } } #endif // _LIBUNWIND_TARGET_OR1K #if defined(_LIBUNWIND_TARGET_RISCV) /// Registers_riscv holds the register state of a thread in a 64-bit RISC-V /// process. class _LIBUNWIND_HIDDEN Registers_riscv { public: Registers_riscv(); Registers_riscv(const void *registers); bool validRegister(int num) const; uint64_t getRegister(int num) const; void setRegister(int num, uint64_t value); bool validFloatRegister(int num) const; double getFloatRegister(int num) const; void setFloatRegister(int num, double value); bool validVectorRegister(int num) const; v128 getVectorRegister(int num) const; void setVectorRegister(int num, v128 value); static const char *getRegisterName(int num); void jumpto(); static int lastDwarfRegNum() { return _LIBUNWIND_HIGHEST_DWARF_REGISTER_RISCV; } static int getArch() { return REGISTERS_RISCV; } uint64_t getSP() const { return _registers.__x[2]; } void setSP(uint64_t value) { _registers.__x[2] = value; } uint64_t getIP() const { return _registers.__x[1]; } void setIP(uint64_t value) { _registers.__x[1] = value; } private: struct GPRs { uint64_t __x[32]; // x0-x31 }; GPRs _registers; double _vectorHalfRegisters[32]; // Currently only the lower double in 128-bit vectore registers // is perserved during unwinding. We could define new register // numbers (> 96) which mean whole vector registers, then this // struct would need to change to contain whole vector registers. }; inline Registers_riscv::Registers_riscv(const void *registers) { static_assert((check_fit::does_fit), "riscv registers do not fit into unw_context_t"); memcpy(&_registers, registers, sizeof(_registers)); static_assert(sizeof(GPRs) == 0x100, "expected VFP registers to be at offset 256"); memcpy(_vectorHalfRegisters, static_cast(registers) + sizeof(GPRs), sizeof(_vectorHalfRegisters)); } inline Registers_riscv::Registers_riscv() { memset(&_registers, 0, sizeof(_registers)); memset(&_vectorHalfRegisters, 0, sizeof(_vectorHalfRegisters)); } inline bool Registers_riscv::validRegister(int regNum) const { if (regNum == UNW_REG_IP) return true; if (regNum == UNW_REG_SP) return true; if (regNum < 0) return false; if (regNum > 95) return false; if ((regNum > 31) && (regNum < 64)) return false; return true; } inline uint64_t Registers_riscv::getRegister(int regNum) const { if (regNum == UNW_REG_IP) return _registers.__x[1]; if (regNum == UNW_REG_SP) return _registers.__x[2]; if ((regNum >= 0) && (regNum < 32)) return _registers.__x[regNum]; _LIBUNWIND_ABORT("unsupported riscv register"); } inline void Registers_riscv::setRegister(int regNum, uint64_t value) { if (regNum == UNW_REG_IP) _registers.__x[1] = value; else if (regNum == UNW_REG_SP) _registers.__x[2] = value; else if ((regNum >= 0) && (regNum < 32)) _registers.__x[regNum] = value; else _LIBUNWIND_ABORT("unsupported riscv register"); } inline const char *Registers_riscv::getRegisterName(int regNum) { switch (regNum) { case UNW_REG_IP: return "ra"; case UNW_REG_SP: return "sp"; case UNW_RISCV_X0: return "x0"; case UNW_RISCV_X1: return "ra"; case UNW_RISCV_X2: return "sp"; case UNW_RISCV_X3: return "x3"; case UNW_RISCV_X4: return "x4"; case UNW_RISCV_X5: return "x5"; case UNW_RISCV_X6: return "x6"; case UNW_RISCV_X7: return "x7"; case UNW_RISCV_X8: return "x8"; case UNW_RISCV_X9: return "x9"; case UNW_RISCV_X10: return "x10"; case UNW_RISCV_X11: return "x11"; case UNW_RISCV_X12: return "x12"; case UNW_RISCV_X13: return "x13"; case UNW_RISCV_X14: return "x14"; case UNW_RISCV_X15: return "x15"; case UNW_RISCV_X16: return "x16"; case UNW_RISCV_X17: return "x17"; case UNW_RISCV_X18: return "x18"; case UNW_RISCV_X19: return "x19"; case UNW_RISCV_X20: return "x20"; case UNW_RISCV_X21: return "x21"; case UNW_RISCV_X22: return "x22"; case UNW_RISCV_X23: return "x23"; case UNW_RISCV_X24: return "x24"; case UNW_RISCV_X25: return "x25"; case UNW_RISCV_X26: return "x26"; case UNW_RISCV_X27: return "x27"; case UNW_RISCV_X28: return "x28"; case UNW_RISCV_X29: return "x29"; case UNW_RISCV_X30: return "x30"; case UNW_RISCV_X31: return "x31"; case UNW_RISCV_D0: return "d0"; case UNW_RISCV_D1: return "d1"; case UNW_RISCV_D2: return "d2"; case UNW_RISCV_D3: return "d3"; case UNW_RISCV_D4: return "d4"; case UNW_RISCV_D5: return "d5"; case UNW_RISCV_D6: return "d6"; case UNW_RISCV_D7: return "d7"; case UNW_RISCV_D8: return "d8"; case UNW_RISCV_D9: return "d9"; case UNW_RISCV_D10: return "d10"; case UNW_RISCV_D11: return "d11"; case UNW_RISCV_D12: return "d12"; case UNW_RISCV_D13: return "d13"; case UNW_RISCV_D14: return "d14"; case UNW_RISCV_D15: return "d15"; case UNW_RISCV_D16: return "d16"; case UNW_RISCV_D17: return "d17"; case UNW_RISCV_D18: return "d18"; case UNW_RISCV_D19: return "d19"; case UNW_RISCV_D20: return "d20"; case UNW_RISCV_D21: return "d21"; case UNW_RISCV_D22: return "d22"; case UNW_RISCV_D23: return "d23"; case UNW_RISCV_D24: return "d24"; case UNW_RISCV_D25: return "d25"; case UNW_RISCV_D26: return "d26"; case UNW_RISCV_D27: return "d27"; case UNW_RISCV_D28: return "d28"; case UNW_RISCV_D29: return "d29"; case UNW_RISCV_D30: return "d30"; case UNW_RISCV_D31: return "d31"; default: return "unknown register"; } } inline bool Registers_riscv::validFloatRegister(int regNum) const { if (regNum < UNW_RISCV_D0) return false; if (regNum > UNW_RISCV_D31) return false; return true; } inline double Registers_riscv::getFloatRegister(int regNum) const { assert(validFloatRegister(regNum)); return _vectorHalfRegisters[regNum - UNW_RISCV_D0]; } inline void Registers_riscv::setFloatRegister(int regNum, double value) { assert(validFloatRegister(regNum)); _vectorHalfRegisters[regNum - UNW_RISCV_D0] = value; } inline bool Registers_riscv::validVectorRegister(int) const { return false; } inline v128 Registers_riscv::getVectorRegister(int) const { _LIBUNWIND_ABORT("no riscv vector register support yet"); } inline void Registers_riscv::setVectorRegister(int, v128) { _LIBUNWIND_ABORT("no riscv vector register support yet"); } #endif // _LIBUNWIND_TARGET_RISCV #if defined(_LIBUNWIND_TARGET_MIPS_O32) /// Registers_mips_o32 holds the register state of a thread in a 32-bit MIPS /// process. class _LIBUNWIND_HIDDEN Registers_mips_o32 { public: Registers_mips_o32(); Registers_mips_o32(const void *registers); bool validRegister(int num) const; uint32_t getRegister(int num) const; void setRegister(int num, uint32_t value); bool validFloatRegister(int num) const; double getFloatRegister(int num) const; void setFloatRegister(int num, double value); bool validVectorRegister(int num) const; v128 getVectorRegister(int num) const; void setVectorRegister(int num, v128 value); static const char *getRegisterName(int num); void jumpto(); static int lastDwarfRegNum() { return _LIBUNWIND_HIGHEST_DWARF_REGISTER_MIPS; } static int getArch() { return REGISTERS_MIPS_O32; } uint32_t getSP() const { return _registers.__r[29]; } void setSP(uint32_t value) { _registers.__r[29] = value; } uint32_t getIP() const { return _registers.__pc; } void setIP(uint32_t value) { _registers.__pc = value; } private: struct mips_o32_thread_state_t { uint32_t __r[32]; uint32_t __pc; uint32_t __hi; uint32_t __lo; }; mips_o32_thread_state_t _registers; #ifdef __mips_hard_float /// O32 with 32-bit floating point registers only uses half of this /// space. However, using the same layout for 32-bit vs 64-bit /// floating point registers results in a single context size for /// O32 with hard float. uint32_t _padding; double _floats[32]; #endif }; inline Registers_mips_o32::Registers_mips_o32(const void *registers) { static_assert((check_fit::does_fit), "mips_o32 registers do not fit into unw_context_t"); memcpy(&_registers, static_cast(registers), sizeof(_registers)); } inline Registers_mips_o32::Registers_mips_o32() { memset(&_registers, 0, sizeof(_registers)); } inline bool Registers_mips_o32::validRegister(int regNum) const { if (regNum == UNW_REG_IP) return true; if (regNum == UNW_REG_SP) return true; if (regNum < 0) return false; if (regNum <= UNW_MIPS_R31) return true; #if __mips_isa_rev != 6 if (regNum == UNW_MIPS_HI) return true; if (regNum == UNW_MIPS_LO) return true; #endif #if defined(__mips_hard_float) && __mips_fpr == 32 if (regNum >= UNW_MIPS_F0 && regNum <= UNW_MIPS_F31) return true; #endif // FIXME: DSP accumulator registers, MSA registers return false; } inline uint32_t Registers_mips_o32::getRegister(int regNum) const { if (regNum >= UNW_MIPS_R0 && regNum <= UNW_MIPS_R31) return _registers.__r[regNum - UNW_MIPS_R0]; #if defined(__mips_hard_float) && __mips_fpr == 32 if (regNum >= UNW_MIPS_F0 && regNum <= UNW_MIPS_F31) { uint32_t *p; if (regNum % 2 == 0) p = (uint32_t *)&_floats[regNum - UNW_MIPS_F0]; else p = (uint32_t *)&_floats[(regNum - 1) - UNW_MIPS_F0] + 1; return *p; } #endif switch (regNum) { case UNW_REG_IP: return _registers.__pc; case UNW_REG_SP: return _registers.__r[29]; case UNW_MIPS_HI: return _registers.__hi; case UNW_MIPS_LO: return _registers.__lo; } _LIBUNWIND_ABORT("unsupported mips_o32 register"); } inline void Registers_mips_o32::setRegister(int regNum, uint32_t value) { if (regNum >= UNW_MIPS_R0 && regNum <= UNW_MIPS_R31) { _registers.__r[regNum - UNW_MIPS_R0] = value; return; } #if defined(__mips_hard_float) && __mips_fpr == 32 if (regNum >= UNW_MIPS_F0 && regNum <= UNW_MIPS_F31) { uint32_t *p; if (regNum % 2 == 0) p = (uint32_t *)&_floats[regNum - UNW_MIPS_F0]; else p = (uint32_t *)&_floats[(regNum - 1) - UNW_MIPS_F0] + 1; *p = value; return; } #endif switch (regNum) { case UNW_REG_IP: _registers.__pc = value; return; case UNW_REG_SP: _registers.__r[29] = value; return; case UNW_MIPS_HI: _registers.__hi = value; return; case UNW_MIPS_LO: _registers.__lo = value; return; } _LIBUNWIND_ABORT("unsupported mips_o32 register"); } inline bool Registers_mips_o32::validFloatRegister(int regNum) const { #if defined(__mips_hard_float) && __mips_fpr == 64 if (regNum >= UNW_MIPS_F0 && regNum <= UNW_MIPS_F31) return true; #endif return false; } inline double Registers_mips_o32::getFloatRegister(int regNum) const { #if defined(__mips_hard_float) && __mips_fpr == 64 assert(validFloatRegister(regNum)); return _floats[regNum - UNW_MIPS_F0]; #else _LIBUNWIND_ABORT("mips_o32 float support not implemented"); #endif } inline void Registers_mips_o32::setFloatRegister(int regNum, double value) { #if defined(__mips_hard_float) && __mips_fpr == 64 assert(validFloatRegister(regNum)); _floats[regNum - UNW_MIPS_F0] = value; #else _LIBUNWIND_ABORT("mips_o32 float support not implemented"); #endif } inline bool Registers_mips_o32::validVectorRegister(int /* regNum */) const { return false; } inline v128 Registers_mips_o32::getVectorRegister(int /* regNum */) const { _LIBUNWIND_ABORT("mips_o32 vector support not implemented"); } inline void Registers_mips_o32::setVectorRegister(int /* regNum */, v128 /* value */) { _LIBUNWIND_ABORT("mips_o32 vector support not implemented"); } inline const char *Registers_mips_o32::getRegisterName(int regNum) { switch (regNum) { case UNW_MIPS_R0: return "$0"; case UNW_MIPS_R1: return "$1"; case UNW_MIPS_R2: return "$2"; case UNW_MIPS_R3: return "$3"; case UNW_MIPS_R4: return "$4"; case UNW_MIPS_R5: return "$5"; case UNW_MIPS_R6: return "$6"; case UNW_MIPS_R7: return "$7"; case UNW_MIPS_R8: return "$8"; case UNW_MIPS_R9: return "$9"; case UNW_MIPS_R10: return "$10"; case UNW_MIPS_R11: return "$11"; case UNW_MIPS_R12: return "$12"; case UNW_MIPS_R13: return "$13"; case UNW_MIPS_R14: return "$14"; case UNW_MIPS_R15: return "$15"; case UNW_MIPS_R16: return "$16"; case UNW_MIPS_R17: return "$17"; case UNW_MIPS_R18: return "$18"; case UNW_MIPS_R19: return "$19"; case UNW_MIPS_R20: return "$20"; case UNW_MIPS_R21: return "$21"; case UNW_MIPS_R22: return "$22"; case UNW_MIPS_R23: return "$23"; case UNW_MIPS_R24: return "$24"; case UNW_MIPS_R25: return "$25"; case UNW_MIPS_R26: return "$26"; case UNW_MIPS_R27: return "$27"; case UNW_MIPS_R28: return "$28"; case UNW_MIPS_R29: return "$29"; case UNW_MIPS_R30: return "$30"; case UNW_MIPS_R31: return "$31"; case UNW_MIPS_F0: return "$f0"; case UNW_MIPS_F1: return "$f1"; case UNW_MIPS_F2: return "$f2"; case UNW_MIPS_F3: return "$f3"; case UNW_MIPS_F4: return "$f4"; case UNW_MIPS_F5: return "$f5"; case UNW_MIPS_F6: return "$f6"; case UNW_MIPS_F7: return "$f7"; case UNW_MIPS_F8: return "$f8"; case UNW_MIPS_F9: return "$f9"; case UNW_MIPS_F10: return "$f10"; case UNW_MIPS_F11: return "$f11"; case UNW_MIPS_F12: return "$f12"; case UNW_MIPS_F13: return "$f13"; case UNW_MIPS_F14: return "$f14"; case UNW_MIPS_F15: return "$f15"; case UNW_MIPS_F16: return "$f16"; case UNW_MIPS_F17: return "$f17"; case UNW_MIPS_F18: return "$f18"; case UNW_MIPS_F19: return "$f19"; case UNW_MIPS_F20: return "$f20"; case UNW_MIPS_F21: return "$f21"; case UNW_MIPS_F22: return "$f22"; case UNW_MIPS_F23: return "$f23"; case UNW_MIPS_F24: return "$f24"; case UNW_MIPS_F25: return "$f25"; case UNW_MIPS_F26: return "$f26"; case UNW_MIPS_F27: return "$f27"; case UNW_MIPS_F28: return "$f28"; case UNW_MIPS_F29: return "$f29"; case UNW_MIPS_F30: return "$f30"; case UNW_MIPS_F31: return "$f31"; case UNW_MIPS_HI: return "$hi"; case UNW_MIPS_LO: return "$lo"; default: return "unknown register"; } } #endif // _LIBUNWIND_TARGET_MIPS_O32 #if defined(_LIBUNWIND_TARGET_MIPS_NEWABI) /// Registers_mips_newabi holds the register state of a thread in a /// MIPS process using NEWABI (the N32 or N64 ABIs). class _LIBUNWIND_HIDDEN Registers_mips_newabi { public: Registers_mips_newabi(); Registers_mips_newabi(const void *registers); bool validRegister(int num) const; uint64_t getRegister(int num) const; void setRegister(int num, uint64_t value); bool validFloatRegister(int num) const; double getFloatRegister(int num) const; void setFloatRegister(int num, double value); bool validVectorRegister(int num) const; v128 getVectorRegister(int num) const; void setVectorRegister(int num, v128 value); static const char *getRegisterName(int num); void jumpto(); static int lastDwarfRegNum() { return _LIBUNWIND_HIGHEST_DWARF_REGISTER_MIPS; } static int getArch() { return REGISTERS_MIPS_NEWABI; } uint64_t getSP() const { return _registers.__r[29]; } void setSP(uint64_t value) { _registers.__r[29] = value; } uint64_t getIP() const { return _registers.__pc; } void setIP(uint64_t value) { _registers.__pc = value; } private: struct mips_newabi_thread_state_t { uint64_t __r[32]; uint64_t __pc; uint64_t __hi; uint64_t __lo; }; mips_newabi_thread_state_t _registers; #ifdef __mips_hard_float double _floats[32]; #endif }; inline Registers_mips_newabi::Registers_mips_newabi(const void *registers) { static_assert((check_fit::does_fit), "mips_newabi registers do not fit into unw_context_t"); memcpy(&_registers, static_cast(registers), sizeof(_registers)); } inline Registers_mips_newabi::Registers_mips_newabi() { memset(&_registers, 0, sizeof(_registers)); } inline bool Registers_mips_newabi::validRegister(int regNum) const { if (regNum == UNW_REG_IP) return true; if (regNum == UNW_REG_SP) return true; if (regNum < 0) return false; if (regNum <= UNW_MIPS_R31) return true; #if __mips_isa_rev != 6 if (regNum == UNW_MIPS_HI) return true; if (regNum == UNW_MIPS_LO) return true; #endif // FIXME: Hard float, DSP accumulator registers, MSA registers return false; } inline uint64_t Registers_mips_newabi::getRegister(int regNum) const { if (regNum >= UNW_MIPS_R0 && regNum <= UNW_MIPS_R31) return _registers.__r[regNum - UNW_MIPS_R0]; switch (regNum) { case UNW_REG_IP: return _registers.__pc; case UNW_REG_SP: return _registers.__r[29]; case UNW_MIPS_HI: return _registers.__hi; case UNW_MIPS_LO: return _registers.__lo; } _LIBUNWIND_ABORT("unsupported mips_newabi register"); } inline void Registers_mips_newabi::setRegister(int regNum, uint64_t value) { if (regNum >= UNW_MIPS_R0 && regNum <= UNW_MIPS_R31) { _registers.__r[regNum - UNW_MIPS_R0] = value; return; } switch (regNum) { case UNW_REG_IP: _registers.__pc = value; return; case UNW_REG_SP: _registers.__r[29] = value; return; case UNW_MIPS_HI: _registers.__hi = value; return; case UNW_MIPS_LO: _registers.__lo = value; return; } _LIBUNWIND_ABORT("unsupported mips_newabi register"); } inline bool Registers_mips_newabi::validFloatRegister(int regNum) const { #ifdef __mips_hard_float if (regNum >= UNW_MIPS_F0 && regNum <= UNW_MIPS_F31) return true; #endif return false; } inline double Registers_mips_newabi::getFloatRegister(int regNum) const { #ifdef __mips_hard_float assert(validFloatRegister(regNum)); return _floats[regNum - UNW_MIPS_F0]; #else _LIBUNWIND_ABORT("mips_newabi float support not implemented"); #endif } inline void Registers_mips_newabi::setFloatRegister(int regNum, double value) { #ifdef __mips_hard_float assert(validFloatRegister(regNum)); _floats[regNum - UNW_MIPS_F0] = value; #else _LIBUNWIND_ABORT("mips_newabi float support not implemented"); #endif } inline bool Registers_mips_newabi::validVectorRegister(int /* regNum */) const { return false; } inline v128 Registers_mips_newabi::getVectorRegister(int /* regNum */) const { _LIBUNWIND_ABORT("mips_newabi vector support not implemented"); } inline void Registers_mips_newabi::setVectorRegister(int /* regNum */, v128 /* value */) { _LIBUNWIND_ABORT("mips_newabi vector support not implemented"); } inline const char *Registers_mips_newabi::getRegisterName(int regNum) { switch (regNum) { case UNW_MIPS_R0: return "$0"; case UNW_MIPS_R1: return "$1"; case UNW_MIPS_R2: return "$2"; case UNW_MIPS_R3: return "$3"; case UNW_MIPS_R4: return "$4"; case UNW_MIPS_R5: return "$5"; case UNW_MIPS_R6: return "$6"; case UNW_MIPS_R7: return "$7"; case UNW_MIPS_R8: return "$8"; case UNW_MIPS_R9: return "$9"; case UNW_MIPS_R10: return "$10"; case UNW_MIPS_R11: return "$11"; case UNW_MIPS_R12: return "$12"; case UNW_MIPS_R13: return "$13"; case UNW_MIPS_R14: return "$14"; case UNW_MIPS_R15: return "$15"; case UNW_MIPS_R16: return "$16"; case UNW_MIPS_R17: return "$17"; case UNW_MIPS_R18: return "$18"; case UNW_MIPS_R19: return "$19"; case UNW_MIPS_R20: return "$20"; case UNW_MIPS_R21: return "$21"; case UNW_MIPS_R22: return "$22"; case UNW_MIPS_R23: return "$23"; case UNW_MIPS_R24: return "$24"; case UNW_MIPS_R25: return "$25"; case UNW_MIPS_R26: return "$26"; case UNW_MIPS_R27: return "$27"; case UNW_MIPS_R28: return "$28"; case UNW_MIPS_R29: return "$29"; case UNW_MIPS_R30: return "$30"; case UNW_MIPS_R31: return "$31"; case UNW_MIPS_F0: return "$f0"; case UNW_MIPS_F1: return "$f1"; case UNW_MIPS_F2: return "$f2"; case UNW_MIPS_F3: return "$f3"; case UNW_MIPS_F4: return "$f4"; case UNW_MIPS_F5: return "$f5"; case UNW_MIPS_F6: return "$f6"; case UNW_MIPS_F7: return "$f7"; case UNW_MIPS_F8: return "$f8"; case UNW_MIPS_F9: return "$f9"; case UNW_MIPS_F10: return "$f10"; case UNW_MIPS_F11: return "$f11"; case UNW_MIPS_F12: return "$f12"; case UNW_MIPS_F13: return "$f13"; case UNW_MIPS_F14: return "$f14"; case UNW_MIPS_F15: return "$f15"; case UNW_MIPS_F16: return "$f16"; case UNW_MIPS_F17: return "$f17"; case UNW_MIPS_F18: return "$f18"; case UNW_MIPS_F19: return "$f19"; case UNW_MIPS_F20: return "$f20"; case UNW_MIPS_F21: return "$f21"; case UNW_MIPS_F22: return "$f22"; case UNW_MIPS_F23: return "$f23"; case UNW_MIPS_F24: return "$f24"; case UNW_MIPS_F25: return "$f25"; case UNW_MIPS_F26: return "$f26"; case UNW_MIPS_F27: return "$f27"; case UNW_MIPS_F28: return "$f28"; case UNW_MIPS_F29: return "$f29"; case UNW_MIPS_F30: return "$f30"; case UNW_MIPS_F31: return "$f31"; case UNW_MIPS_HI: return "$hi"; case UNW_MIPS_LO: return "$lo"; default: return "unknown register"; } } #endif // _LIBUNWIND_TARGET_MIPS_NEWABI #if defined(_LIBUNWIND_TARGET_SPARC) /// Registers_sparc holds the register state of a thread in a 32-bit Sparc /// process. class _LIBUNWIND_HIDDEN Registers_sparc { public: Registers_sparc(); Registers_sparc(const void *registers); bool validRegister(int num) const; uint32_t getRegister(int num) const; void setRegister(int num, uint32_t value); bool validFloatRegister(int num) const; double getFloatRegister(int num) const; void setFloatRegister(int num, double value); bool validVectorRegister(int num) const; v128 getVectorRegister(int num) const; void setVectorRegister(int num, v128 value); static const char *getRegisterName(int num); void jumpto(); static int lastDwarfRegNum() { return _LIBUNWIND_HIGHEST_DWARF_REGISTER_SPARC; } static int getArch() { return REGISTERS_SPARC; } uint64_t getSP() const { return _registers.__regs[UNW_SPARC_O6]; } void setSP(uint32_t value) { _registers.__regs[UNW_SPARC_O6] = value; } uint64_t getIP() const { return _registers.__regs[UNW_SPARC_O7]; } void setIP(uint32_t value) { _registers.__regs[UNW_SPARC_O7] = value; } private: struct sparc_thread_state_t { unsigned int __regs[32]; }; sparc_thread_state_t _registers; }; inline Registers_sparc::Registers_sparc(const void *registers) { static_assert((check_fit::does_fit), "sparc registers do not fit into unw_context_t"); memcpy(&_registers, static_cast(registers), sizeof(_registers)); } inline Registers_sparc::Registers_sparc() { memset(&_registers, 0, sizeof(_registers)); } inline bool Registers_sparc::validRegister(int regNum) const { if (regNum == UNW_REG_IP) return true; if (regNum == UNW_REG_SP) return true; if (regNum < 0) return false; if (regNum <= UNW_SPARC_I7) return true; return false; } inline uint32_t Registers_sparc::getRegister(int regNum) const { if ((UNW_SPARC_G0 <= regNum) && (regNum <= UNW_SPARC_I7)) { return _registers.__regs[regNum]; } switch (regNum) { case UNW_REG_IP: return _registers.__regs[UNW_SPARC_O7]; case UNW_REG_SP: return _registers.__regs[UNW_SPARC_O6]; } _LIBUNWIND_ABORT("unsupported sparc register"); } inline void Registers_sparc::setRegister(int regNum, uint32_t value) { if ((UNW_SPARC_G0 <= regNum) && (regNum <= UNW_SPARC_I7)) { _registers.__regs[regNum] = value; return; } switch (regNum) { case UNW_REG_IP: _registers.__regs[UNW_SPARC_O7] = value; return; case UNW_REG_SP: _registers.__regs[UNW_SPARC_O6] = value; return; } _LIBUNWIND_ABORT("unsupported sparc register"); } inline bool Registers_sparc::validFloatRegister(int) const { return false; } inline double Registers_sparc::getFloatRegister(int) const { _LIBUNWIND_ABORT("no Sparc float registers"); } inline void Registers_sparc::setFloatRegister(int, double) { _LIBUNWIND_ABORT("no Sparc float registers"); } inline bool Registers_sparc::validVectorRegister(int) const { return false; } inline v128 Registers_sparc::getVectorRegister(int) const { _LIBUNWIND_ABORT("no Sparc vector registers"); } inline void Registers_sparc::setVectorRegister(int, v128) { _LIBUNWIND_ABORT("no Sparc vector registers"); } inline const char *Registers_sparc::getRegisterName(int regNum) { switch (regNum) { case UNW_REG_IP: return "pc"; case UNW_SPARC_G0: return "g0"; case UNW_SPARC_G1: return "g1"; case UNW_SPARC_G2: return "g2"; case UNW_SPARC_G3: return "g3"; case UNW_SPARC_G4: return "g4"; case UNW_SPARC_G5: return "g5"; case UNW_SPARC_G6: return "g6"; case UNW_SPARC_G7: return "g7"; case UNW_SPARC_O0: return "o0"; case UNW_SPARC_O1: return "o1"; case UNW_SPARC_O2: return "o2"; case UNW_SPARC_O3: return "o3"; case UNW_SPARC_O4: return "o4"; case UNW_SPARC_O5: return "o5"; case UNW_REG_SP: case UNW_SPARC_O6: return "sp"; case UNW_SPARC_O7: return "o7"; case UNW_SPARC_L0: return "l0"; case UNW_SPARC_L1: return "l1"; case UNW_SPARC_L2: return "l2"; case UNW_SPARC_L3: return "l3"; case UNW_SPARC_L4: return "l4"; case UNW_SPARC_L5: return "l5"; case UNW_SPARC_L6: return "l6"; case UNW_SPARC_L7: return "l7"; case UNW_SPARC_I0: return "i0"; case UNW_SPARC_I1: return "i1"; case UNW_SPARC_I2: return "i2"; case UNW_SPARC_I3: return "i3"; case UNW_SPARC_I4: return "i4"; case UNW_SPARC_I5: return "i5"; case UNW_SPARC_I6: return "fp"; case UNW_SPARC_I7: return "i7"; default: return "unknown register"; } } #endif // _LIBUNWIND_TARGET_SPARC } // namespace libunwind #endif // __REGISTERS_HPP__ Index: projects/clang900-import/contrib/libunwind/src/Unwind-EHABI.cpp =================================================================== --- projects/clang900-import/contrib/libunwind/src/Unwind-EHABI.cpp (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/Unwind-EHABI.cpp (revision 351404) @@ -1,991 +1,994 @@ //===--------------------------- Unwind-EHABI.cpp -------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // Implements ARM zero-cost C++ exceptions // //===----------------------------------------------------------------------===// #include "Unwind-EHABI.h" #if defined(_LIBUNWIND_ARM_EHABI) #include #include #include #include #include #include -#include - #include "config.h" #include "libunwind.h" #include "libunwind_ext.h" #include "unwind.h" namespace { // Strange order: take words in order, but inside word, take from most to least // signinficant byte. uint8_t getByte(const uint32_t* data, size_t offset) { const uint8_t* byteData = reinterpret_cast(data); +#ifdef __LITTLE_ENDIAN__ return byteData[(offset & ~(size_t)0x03) + (3 - (offset & (size_t)0x03))]; +#else + return byteData[offset]; +#endif } const char* getNextWord(const char* data, uint32_t* out) { *out = *reinterpret_cast(data); return data + 4; } const char* getNextNibble(const char* data, uint32_t* out) { *out = *reinterpret_cast(data); return data + 2; } struct Descriptor { // See # 9.2 typedef enum { SU16 = 0, // Short descriptor, 16-bit entries LU16 = 1, // Long descriptor, 16-bit entries LU32 = 3, // Long descriptor, 32-bit entries RESERVED0 = 4, RESERVED1 = 5, RESERVED2 = 6, RESERVED3 = 7, RESERVED4 = 8, RESERVED5 = 9, RESERVED6 = 10, RESERVED7 = 11, RESERVED8 = 12, RESERVED9 = 13, RESERVED10 = 14, RESERVED11 = 15 } Format; // See # 9.2 typedef enum { CLEANUP = 0x0, FUNC = 0x1, CATCH = 0x2, INVALID = 0x4 } Kind; }; _Unwind_Reason_Code ProcessDescriptors( _Unwind_State state, _Unwind_Control_Block* ucbp, struct _Unwind_Context* context, Descriptor::Format format, const char* descriptorStart, uint32_t flags) { // EHT is inlined in the index using compact form. No descriptors. #5 if (flags & 0x1) return _URC_CONTINUE_UNWIND; // TODO: We should check the state here, and determine whether we need to // perform phase1 or phase2 unwinding. (void)state; const char* descriptor = descriptorStart; uint32_t descriptorWord; getNextWord(descriptor, &descriptorWord); while (descriptorWord) { // Read descriptor based on # 9.2. uint32_t length; uint32_t offset; switch (format) { case Descriptor::LU32: descriptor = getNextWord(descriptor, &length); descriptor = getNextWord(descriptor, &offset); case Descriptor::LU16: descriptor = getNextNibble(descriptor, &length); descriptor = getNextNibble(descriptor, &offset); default: assert(false); return _URC_FAILURE; } // See # 9.2 table for decoding the kind of descriptor. It's a 2-bit value. Descriptor::Kind kind = static_cast((length & 0x1) | ((offset & 0x1) << 1)); // Clear off flag from last bit. length &= ~1u; offset &= ~1u; uintptr_t scopeStart = ucbp->pr_cache.fnstart + offset; uintptr_t scopeEnd = scopeStart + length; uintptr_t pc = _Unwind_GetIP(context); bool isInScope = (scopeStart <= pc) && (pc < scopeEnd); switch (kind) { case Descriptor::CLEANUP: { // TODO(ajwong): Handle cleanup descriptors. break; } case Descriptor::FUNC: { // TODO(ajwong): Handle function descriptors. break; } case Descriptor::CATCH: { // Catch descriptors require gobbling one more word. uint32_t landing_pad; descriptor = getNextWord(descriptor, &landing_pad); if (isInScope) { // TODO(ajwong): This is only phase1 compatible logic. Implement // phase2. landing_pad = signExtendPrel31(landing_pad & ~0x80000000); if (landing_pad == 0xffffffff) { return _URC_HANDLER_FOUND; } else if (landing_pad == 0xfffffffe) { return _URC_FAILURE; } else { /* bool is_reference_type = landing_pad & 0x80000000; void* matched_object; if (__cxxabiv1::__cxa_type_match( ucbp, reinterpret_cast(landing_pad), is_reference_type, &matched_object) != __cxxabiv1::ctm_failed) return _URC_HANDLER_FOUND; */ _LIBUNWIND_ABORT("Type matching not implemented"); } } break; } default: _LIBUNWIND_ABORT("Invalid descriptor kind found."); } getNextWord(descriptor, &descriptorWord); } return _URC_CONTINUE_UNWIND; } static _Unwind_Reason_Code unwindOneFrame(_Unwind_State state, _Unwind_Control_Block* ucbp, struct _Unwind_Context* context) { // Read the compact model EHT entry's header # 6.3 const uint32_t* unwindingData = ucbp->pr_cache.ehtp; assert((*unwindingData & 0xf0000000) == 0x80000000 && "Must be a compact entry"); Descriptor::Format format = static_cast((*unwindingData & 0x0f000000) >> 24); const char *lsda = reinterpret_cast(_Unwind_GetLanguageSpecificData(context)); // Handle descriptors before unwinding so they are processed in the context // of the correct stack frame. _Unwind_Reason_Code result = ProcessDescriptors(state, ucbp, context, format, lsda, ucbp->pr_cache.additional); if (result != _URC_CONTINUE_UNWIND) return result; - if (unw_step(reinterpret_cast(context)) != UNW_STEP_SUCCESS) + if (__unw_step(reinterpret_cast(context)) != UNW_STEP_SUCCESS) return _URC_FAILURE; return _URC_CONTINUE_UNWIND; } // Generates mask discriminator for _Unwind_VRS_Pop, e.g. for _UVRSC_CORE / // _UVRSD_UINT32. uint32_t RegisterMask(uint8_t start, uint8_t count_minus_one) { return ((1U << (count_minus_one + 1)) - 1) << start; } // Generates mask discriminator for _Unwind_VRS_Pop, e.g. for _UVRSC_VFP / // _UVRSD_DOUBLE. uint32_t RegisterRange(uint8_t start, uint8_t count_minus_one) { return ((uint32_t)start << 16) | ((uint32_t)count_minus_one + 1); } } // end anonymous namespace /** * Decodes an EHT entry. * * @param data Pointer to EHT. * @param[out] off Offset from return value (in bytes) to begin interpretation. * @param[out] len Number of bytes in unwind code. * @return Pointer to beginning of unwind code. */ extern "C" const uint32_t* decode_eht_entry(const uint32_t* data, size_t* off, size_t* len) { if ((*data & 0x80000000) == 0) { // 6.2: Generic Model // // EHT entry is a prel31 pointing to the PR, followed by data understood // only by the personality routine. Fortunately, all existing assembler // implementations, including GNU assembler, LLVM integrated assembler, // and ARM assembler, assume that the unwind opcodes come after the // personality rountine address. *off = 1; // First byte is size data. *len = (((data[1] >> 24) & 0xff) + 1) * 4; data++; // Skip the first word, which is the prel31 offset. } else { // 6.3: ARM Compact Model // // EHT entries here correspond to the __aeabi_unwind_cpp_pr[012] PRs indeded // by format: Descriptor::Format format = static_cast((*data & 0x0f000000) >> 24); switch (format) { case Descriptor::SU16: *len = 4; *off = 1; break; case Descriptor::LU16: case Descriptor::LU32: *len = 4 + 4 * ((*data & 0x00ff0000) >> 16); *off = 2; break; default: return nullptr; } } return data; } _LIBUNWIND_EXPORT _Unwind_Reason_Code _Unwind_VRS_Interpret(_Unwind_Context *context, const uint32_t *data, size_t offset, size_t len) { bool wrotePC = false; bool finish = false; while (offset < len && !finish) { uint8_t byte = getByte(data, offset++); if ((byte & 0x80) == 0) { uint32_t sp; _Unwind_VRS_Get(context, _UVRSC_CORE, UNW_ARM_SP, _UVRSD_UINT32, &sp); if (byte & 0x40) sp -= (((uint32_t)byte & 0x3f) << 2) + 4; else sp += ((uint32_t)byte << 2) + 4; _Unwind_VRS_Set(context, _UVRSC_CORE, UNW_ARM_SP, _UVRSD_UINT32, &sp); } else { switch (byte & 0xf0) { case 0x80: { if (offset >= len) return _URC_FAILURE; uint32_t registers = (((uint32_t)byte & 0x0f) << 12) | (((uint32_t)getByte(data, offset++)) << 4); if (!registers) return _URC_FAILURE; if (registers & (1 << 15)) wrotePC = true; _Unwind_VRS_Pop(context, _UVRSC_CORE, registers, _UVRSD_UINT32); break; } case 0x90: { uint8_t reg = byte & 0x0f; if (reg == 13 || reg == 15) return _URC_FAILURE; uint32_t sp; _Unwind_VRS_Get(context, _UVRSC_CORE, UNW_ARM_R0 + reg, _UVRSD_UINT32, &sp); _Unwind_VRS_Set(context, _UVRSC_CORE, UNW_ARM_SP, _UVRSD_UINT32, &sp); break; } case 0xa0: { uint32_t registers = RegisterMask(4, byte & 0x07); if (byte & 0x08) registers |= 1 << 14; _Unwind_VRS_Pop(context, _UVRSC_CORE, registers, _UVRSD_UINT32); break; } case 0xb0: { switch (byte) { case 0xb0: finish = true; break; case 0xb1: { if (offset >= len) return _URC_FAILURE; uint8_t registers = getByte(data, offset++); if (registers & 0xf0 || !registers) return _URC_FAILURE; _Unwind_VRS_Pop(context, _UVRSC_CORE, registers, _UVRSD_UINT32); break; } case 0xb2: { uint32_t addend = 0; uint32_t shift = 0; // This decodes a uleb128 value. while (true) { if (offset >= len) return _URC_FAILURE; uint32_t v = getByte(data, offset++); addend |= (v & 0x7f) << shift; if ((v & 0x80) == 0) break; shift += 7; } uint32_t sp; _Unwind_VRS_Get(context, _UVRSC_CORE, UNW_ARM_SP, _UVRSD_UINT32, &sp); sp += 0x204 + (addend << 2); _Unwind_VRS_Set(context, _UVRSC_CORE, UNW_ARM_SP, _UVRSD_UINT32, &sp); break; } case 0xb3: { uint8_t v = getByte(data, offset++); _Unwind_VRS_Pop(context, _UVRSC_VFP, RegisterRange(static_cast(v >> 4), v & 0x0f), _UVRSD_VFPX); break; } case 0xb4: case 0xb5: case 0xb6: case 0xb7: return _URC_FAILURE; default: _Unwind_VRS_Pop(context, _UVRSC_VFP, RegisterRange(8, byte & 0x07), _UVRSD_VFPX); break; } break; } case 0xc0: { switch (byte) { #if defined(__ARM_WMMX) case 0xc0: case 0xc1: case 0xc2: case 0xc3: case 0xc4: case 0xc5: _Unwind_VRS_Pop(context, _UVRSC_WMMXD, RegisterRange(10, byte & 0x7), _UVRSD_DOUBLE); break; case 0xc6: { uint8_t v = getByte(data, offset++); uint8_t start = static_cast(v >> 4); uint8_t count_minus_one = v & 0xf; if (start + count_minus_one >= 16) return _URC_FAILURE; _Unwind_VRS_Pop(context, _UVRSC_WMMXD, RegisterRange(start, count_minus_one), _UVRSD_DOUBLE); break; } case 0xc7: { uint8_t v = getByte(data, offset++); if (!v || v & 0xf0) return _URC_FAILURE; _Unwind_VRS_Pop(context, _UVRSC_WMMXC, v, _UVRSD_DOUBLE); break; } #endif case 0xc8: case 0xc9: { uint8_t v = getByte(data, offset++); uint8_t start = static_cast(((byte == 0xc8) ? 16 : 0) + (v >> 4)); uint8_t count_minus_one = v & 0xf; if (start + count_minus_one >= 32) return _URC_FAILURE; _Unwind_VRS_Pop(context, _UVRSC_VFP, RegisterRange(start, count_minus_one), _UVRSD_DOUBLE); break; } default: return _URC_FAILURE; } break; } case 0xd0: { if (byte & 0x08) return _URC_FAILURE; _Unwind_VRS_Pop(context, _UVRSC_VFP, RegisterRange(8, byte & 0x7), _UVRSD_DOUBLE); break; } default: return _URC_FAILURE; } } } if (!wrotePC) { uint32_t lr; _Unwind_VRS_Get(context, _UVRSC_CORE, UNW_ARM_LR, _UVRSD_UINT32, &lr); _Unwind_VRS_Set(context, _UVRSC_CORE, UNW_ARM_IP, _UVRSD_UINT32, &lr); } return _URC_CONTINUE_UNWIND; } extern "C" _LIBUNWIND_EXPORT _Unwind_Reason_Code __aeabi_unwind_cpp_pr0(_Unwind_State state, _Unwind_Control_Block *ucbp, _Unwind_Context *context) { return unwindOneFrame(state, ucbp, context); } extern "C" _LIBUNWIND_EXPORT _Unwind_Reason_Code __aeabi_unwind_cpp_pr1(_Unwind_State state, _Unwind_Control_Block *ucbp, _Unwind_Context *context) { return unwindOneFrame(state, ucbp, context); } extern "C" _LIBUNWIND_EXPORT _Unwind_Reason_Code __aeabi_unwind_cpp_pr2(_Unwind_State state, _Unwind_Control_Block *ucbp, _Unwind_Context *context) { return unwindOneFrame(state, ucbp, context); } static _Unwind_Reason_Code unwind_phase1(unw_context_t *uc, unw_cursor_t *cursor, _Unwind_Exception *exception_object) { // EHABI #7.3 discusses preserving the VRS in a "temporary VRS" during // phase 1 and then restoring it to the "primary VRS" for phase 2. The // effect is phase 2 doesn't see any of the VRS manipulations from phase 1. // In this implementation, the phases don't share the VRS backing store. // Instead, they are passed the original |uc| and they create a new VRS // from scratch thus achieving the same effect. - unw_init_local(cursor, uc); + __unw_init_local(cursor, uc); // Walk each frame looking for a place to stop. for (bool handlerNotFound = true; handlerNotFound;) { // See if frame has code to run (has personality routine). unw_proc_info_t frameInfo; - if (unw_get_proc_info(cursor, &frameInfo) != UNW_ESUCCESS) { - _LIBUNWIND_TRACE_UNWINDING("unwind_phase1(ex_ojb=%p): unw_get_proc_info " - "failed => _URC_FATAL_PHASE1_ERROR", - static_cast(exception_object)); + if (__unw_get_proc_info(cursor, &frameInfo) != UNW_ESUCCESS) { + _LIBUNWIND_TRACE_UNWINDING( + "unwind_phase1(ex_ojb=%p): __unw_get_proc_info " + "failed => _URC_FATAL_PHASE1_ERROR", + static_cast(exception_object)); return _URC_FATAL_PHASE1_ERROR; } // When tracing, print state information. if (_LIBUNWIND_TRACING_UNWINDING) { char functionBuf[512]; const char *functionName = functionBuf; unw_word_t offset; - if ((unw_get_proc_name(cursor, functionBuf, sizeof(functionBuf), - &offset) != UNW_ESUCCESS) || + if ((__unw_get_proc_name(cursor, functionBuf, sizeof(functionBuf), + &offset) != UNW_ESUCCESS) || (frameInfo.start_ip + offset > frameInfo.end_ip)) functionName = ".anonymous."; unw_word_t pc; - unw_get_reg(cursor, UNW_REG_IP, &pc); + __unw_get_reg(cursor, UNW_REG_IP, &pc); _LIBUNWIND_TRACE_UNWINDING( "unwind_phase1(ex_ojb=%p): pc=0x%" PRIxPTR ", start_ip=0x%" PRIxPTR ", func=%s, " "lsda=0x%" PRIxPTR ", personality=0x%" PRIxPTR, static_cast(exception_object), pc, frameInfo.start_ip, functionName, frameInfo.lsda, frameInfo.handler); } // If there is a personality routine, ask it if it will want to stop at // this frame. if (frameInfo.handler != 0) { __personality_routine p = (__personality_routine)(long)(frameInfo.handler); _LIBUNWIND_TRACE_UNWINDING( "unwind_phase1(ex_ojb=%p): calling personality function %p", static_cast(exception_object), reinterpret_cast(reinterpret_cast(p))); struct _Unwind_Context *context = (struct _Unwind_Context *)(cursor); exception_object->pr_cache.fnstart = frameInfo.start_ip; exception_object->pr_cache.ehtp = (_Unwind_EHT_Header *)frameInfo.unwind_info; exception_object->pr_cache.additional = frameInfo.flags; _Unwind_Reason_Code personalityResult = (*p)(_US_VIRTUAL_UNWIND_FRAME, exception_object, context); _LIBUNWIND_TRACE_UNWINDING( "unwind_phase1(ex_ojb=%p): personality result %d start_ip %x ehtp %p " "additional %x", static_cast(exception_object), personalityResult, exception_object->pr_cache.fnstart, static_cast(exception_object->pr_cache.ehtp), exception_object->pr_cache.additional); switch (personalityResult) { case _URC_HANDLER_FOUND: // found a catch clause or locals that need destructing in this frame // stop search and remember stack pointer at the frame handlerNotFound = false; // p should have initialized barrier_cache. EHABI #7.3.5 _LIBUNWIND_TRACE_UNWINDING( "unwind_phase1(ex_ojb=%p): _URC_HANDLER_FOUND", static_cast(exception_object)); return _URC_NO_REASON; case _URC_CONTINUE_UNWIND: _LIBUNWIND_TRACE_UNWINDING( "unwind_phase1(ex_ojb=%p): _URC_CONTINUE_UNWIND", static_cast(exception_object)); // continue unwinding break; // EHABI #7.3.3 case _URC_FAILURE: return _URC_FAILURE; default: // something went wrong _LIBUNWIND_TRACE_UNWINDING( "unwind_phase1(ex_ojb=%p): _URC_FATAL_PHASE1_ERROR", static_cast(exception_object)); return _URC_FATAL_PHASE1_ERROR; } } } return _URC_NO_REASON; } static _Unwind_Reason_Code unwind_phase2(unw_context_t *uc, unw_cursor_t *cursor, _Unwind_Exception *exception_object, bool resume) { // See comment at the start of unwind_phase1 regarding VRS integrity. - unw_init_local(cursor, uc); + __unw_init_local(cursor, uc); _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p)", static_cast(exception_object)); int frame_count = 0; // Walk each frame until we reach where search phase said to stop. while (true) { // Ask libunwind to get next frame (skip over first which is // _Unwind_RaiseException or _Unwind_Resume). // // Resume only ever makes sense for 1 frame. _Unwind_State state = resume ? _US_UNWIND_FRAME_RESUME : _US_UNWIND_FRAME_STARTING; if (resume && frame_count == 1) { // On a resume, first unwind the _Unwind_Resume() frame. The next frame // is now the landing pad for the cleanup from a previous execution of // phase2. To continue unwindingly correctly, replace VRS[15] with the // IP of the frame that the previous run of phase2 installed the context // for. After this, continue unwinding as if normal. // // See #7.4.6 for details. - unw_set_reg(cursor, UNW_REG_IP, - exception_object->unwinder_cache.reserved2); + __unw_set_reg(cursor, UNW_REG_IP, + exception_object->unwinder_cache.reserved2); resume = false; } // Get info about this frame. unw_word_t sp; unw_proc_info_t frameInfo; - unw_get_reg(cursor, UNW_REG_SP, &sp); - if (unw_get_proc_info(cursor, &frameInfo) != UNW_ESUCCESS) { - _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p): unw_get_proc_info " - "failed => _URC_FATAL_PHASE2_ERROR", - static_cast(exception_object)); + __unw_get_reg(cursor, UNW_REG_SP, &sp); + if (__unw_get_proc_info(cursor, &frameInfo) != UNW_ESUCCESS) { + _LIBUNWIND_TRACE_UNWINDING( + "unwind_phase2(ex_ojb=%p): __unw_get_proc_info " + "failed => _URC_FATAL_PHASE2_ERROR", + static_cast(exception_object)); return _URC_FATAL_PHASE2_ERROR; } // When tracing, print state information. if (_LIBUNWIND_TRACING_UNWINDING) { char functionBuf[512]; const char *functionName = functionBuf; unw_word_t offset; - if ((unw_get_proc_name(cursor, functionBuf, sizeof(functionBuf), - &offset) != UNW_ESUCCESS) || + if ((__unw_get_proc_name(cursor, functionBuf, sizeof(functionBuf), + &offset) != UNW_ESUCCESS) || (frameInfo.start_ip + offset > frameInfo.end_ip)) functionName = ".anonymous."; _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2(ex_ojb=%p): start_ip=0x%" PRIxPTR ", func=%s, sp=0x%" PRIxPTR ", " "lsda=0x%" PRIxPTR ", personality=0x%" PRIxPTR "", static_cast(exception_object), frameInfo.start_ip, functionName, sp, frameInfo.lsda, frameInfo.handler); } // If there is a personality routine, tell it we are unwinding. if (frameInfo.handler != 0) { __personality_routine p = (__personality_routine)(long)(frameInfo.handler); struct _Unwind_Context *context = (struct _Unwind_Context *)(cursor); // EHABI #7.2 exception_object->pr_cache.fnstart = frameInfo.start_ip; exception_object->pr_cache.ehtp = (_Unwind_EHT_Header *)frameInfo.unwind_info; exception_object->pr_cache.additional = frameInfo.flags; _Unwind_Reason_Code personalityResult = (*p)(state, exception_object, context); switch (personalityResult) { case _URC_CONTINUE_UNWIND: // Continue unwinding _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2(ex_ojb=%p): _URC_CONTINUE_UNWIND", static_cast(exception_object)); // EHABI #7.2 if (sp == exception_object->barrier_cache.sp) { // Phase 1 said we would stop at this frame, but we did not... _LIBUNWIND_ABORT("during phase1 personality function said it would " "stop here, but now in phase2 it did not stop here"); } break; case _URC_INSTALL_CONTEXT: _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2(ex_ojb=%p): _URC_INSTALL_CONTEXT", static_cast(exception_object)); // Personality routine says to transfer control to landing pad. // We may get control back if landing pad calls _Unwind_Resume(). if (_LIBUNWIND_TRACING_UNWINDING) { unw_word_t pc; - unw_get_reg(cursor, UNW_REG_IP, &pc); - unw_get_reg(cursor, UNW_REG_SP, &sp); + __unw_get_reg(cursor, UNW_REG_IP, &pc); + __unw_get_reg(cursor, UNW_REG_SP, &sp); _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p): re-entering " "user code with ip=0x%" PRIxPTR ", sp=0x%" PRIxPTR, static_cast(exception_object), pc, sp); } { // EHABI #7.4.1 says we need to preserve pc for when _Unwind_Resume // is called back, to find this same frame. unw_word_t pc; - unw_get_reg(cursor, UNW_REG_IP, &pc); + __unw_get_reg(cursor, UNW_REG_IP, &pc); exception_object->unwinder_cache.reserved2 = (uint32_t)pc; } - unw_resume(cursor); - // unw_resume() only returns if there was an error. + __unw_resume(cursor); + // __unw_resume() only returns if there was an error. return _URC_FATAL_PHASE2_ERROR; // # EHABI #7.4.3 case _URC_FAILURE: abort(); default: // Personality routine returned an unknown result code. _LIBUNWIND_DEBUG_LOG("personality function returned unknown result %d", personalityResult); return _URC_FATAL_PHASE2_ERROR; } } frame_count++; } // Clean up phase did not resume at the frame that the search phase // said it would... return _URC_FATAL_PHASE2_ERROR; } /// Called by __cxa_throw. Only returns if there is a fatal error. _LIBUNWIND_EXPORT _Unwind_Reason_Code _Unwind_RaiseException(_Unwind_Exception *exception_object) { _LIBUNWIND_TRACE_API("_Unwind_RaiseException(ex_obj=%p)", static_cast(exception_object)); unw_context_t uc; unw_cursor_t cursor; - unw_getcontext(&uc); + __unw_getcontext(&uc); // This field for is for compatibility with GCC to say this isn't a forced // unwind. EHABI #7.2 exception_object->unwinder_cache.reserved1 = 0; // phase 1: the search phase _Unwind_Reason_Code phase1 = unwind_phase1(&uc, &cursor, exception_object); if (phase1 != _URC_NO_REASON) return phase1; // phase 2: the clean up phase return unwind_phase2(&uc, &cursor, exception_object, false); } _LIBUNWIND_EXPORT void _Unwind_Complete(_Unwind_Exception* exception_object) { // This is to be called when exception handling completes to give us a chance // to perform any housekeeping. EHABI #7.2. But we have nothing to do here. (void)exception_object; } /// When _Unwind_RaiseException() is in phase2, it hands control /// to the personality function at each frame. The personality /// may force a jump to a landing pad in that function, the landing /// pad code may then call _Unwind_Resume() to continue with the /// unwinding. Note: the call to _Unwind_Resume() is from compiler /// geneated user code. All other _Unwind_* routines are called /// by the C++ runtime __cxa_* routines. /// /// Note: re-throwing an exception (as opposed to continuing the unwind) /// is implemented by having the code call __cxa_rethrow() which /// in turn calls _Unwind_Resume_or_Rethrow(). _LIBUNWIND_EXPORT void _Unwind_Resume(_Unwind_Exception *exception_object) { _LIBUNWIND_TRACE_API("_Unwind_Resume(ex_obj=%p)", static_cast(exception_object)); unw_context_t uc; unw_cursor_t cursor; - unw_getcontext(&uc); + __unw_getcontext(&uc); // _Unwind_RaiseException on EHABI will always set the reserved1 field to 0, // which is in the same position as private_1 below. // TODO(ajwong): Who wronte the above? Why is it true? unwind_phase2(&uc, &cursor, exception_object, true); // Clients assume _Unwind_Resume() does not return, so all we can do is abort. _LIBUNWIND_ABORT("_Unwind_Resume() can't return"); } /// Called by personality handler during phase 2 to get LSDA for current frame. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetLanguageSpecificData(struct _Unwind_Context *context) { unw_cursor_t *cursor = (unw_cursor_t *)context; unw_proc_info_t frameInfo; uintptr_t result = 0; - if (unw_get_proc_info(cursor, &frameInfo) == UNW_ESUCCESS) + if (__unw_get_proc_info(cursor, &frameInfo) == UNW_ESUCCESS) result = (uintptr_t)frameInfo.lsda; _LIBUNWIND_TRACE_API( "_Unwind_GetLanguageSpecificData(context=%p) => 0x%llx", static_cast(context), (long long)result); return result; } static uint64_t ValueAsBitPattern(_Unwind_VRS_DataRepresentation representation, void* valuep) { uint64_t value = 0; switch (representation) { case _UVRSD_UINT32: case _UVRSD_FLOAT: memcpy(&value, valuep, sizeof(uint32_t)); break; case _UVRSD_VFPX: case _UVRSD_UINT64: case _UVRSD_DOUBLE: memcpy(&value, valuep, sizeof(uint64_t)); break; } return value; } _LIBUNWIND_EXPORT _Unwind_VRS_Result _Unwind_VRS_Set(_Unwind_Context *context, _Unwind_VRS_RegClass regclass, uint32_t regno, _Unwind_VRS_DataRepresentation representation, void *valuep) { _LIBUNWIND_TRACE_API("_Unwind_VRS_Set(context=%p, regclass=%d, reg=%d, " "rep=%d, value=0x%llX)", static_cast(context), regclass, regno, representation, ValueAsBitPattern(representation, valuep)); unw_cursor_t *cursor = (unw_cursor_t *)context; switch (regclass) { case _UVRSC_CORE: if (representation != _UVRSD_UINT32 || regno > 15) return _UVRSR_FAILED; - return unw_set_reg(cursor, (unw_regnum_t)(UNW_ARM_R0 + regno), - *(unw_word_t *)valuep) == UNW_ESUCCESS + return __unw_set_reg(cursor, (unw_regnum_t)(UNW_ARM_R0 + regno), + *(unw_word_t *)valuep) == UNW_ESUCCESS ? _UVRSR_OK : _UVRSR_FAILED; case _UVRSC_VFP: if (representation != _UVRSD_VFPX && representation != _UVRSD_DOUBLE) return _UVRSR_FAILED; if (representation == _UVRSD_VFPX) { // Can only touch d0-15 with FSTMFDX. if (regno > 15) return _UVRSR_FAILED; - unw_save_vfp_as_X(cursor); + __unw_save_vfp_as_X(cursor); } else { if (regno > 31) return _UVRSR_FAILED; } - return unw_set_fpreg(cursor, (unw_regnum_t)(UNW_ARM_D0 + regno), - *(unw_fpreg_t *)valuep) == UNW_ESUCCESS + return __unw_set_fpreg(cursor, (unw_regnum_t)(UNW_ARM_D0 + regno), + *(unw_fpreg_t *)valuep) == UNW_ESUCCESS ? _UVRSR_OK : _UVRSR_FAILED; #if defined(__ARM_WMMX) case _UVRSC_WMMXC: if (representation != _UVRSD_UINT32 || regno > 3) return _UVRSR_FAILED; - return unw_set_reg(cursor, (unw_regnum_t)(UNW_ARM_WC0 + regno), - *(unw_word_t *)valuep) == UNW_ESUCCESS + return __unw_set_reg(cursor, (unw_regnum_t)(UNW_ARM_WC0 + regno), + *(unw_word_t *)valuep) == UNW_ESUCCESS ? _UVRSR_OK : _UVRSR_FAILED; case _UVRSC_WMMXD: if (representation != _UVRSD_DOUBLE || regno > 31) return _UVRSR_FAILED; - return unw_set_fpreg(cursor, (unw_regnum_t)(UNW_ARM_WR0 + regno), - *(unw_fpreg_t *)valuep) == UNW_ESUCCESS + return __unw_set_fpreg(cursor, (unw_regnum_t)(UNW_ARM_WR0 + regno), + *(unw_fpreg_t *)valuep) == UNW_ESUCCESS ? _UVRSR_OK : _UVRSR_FAILED; #else case _UVRSC_WMMXC: case _UVRSC_WMMXD: break; #endif } _LIBUNWIND_ABORT("unsupported register class"); } static _Unwind_VRS_Result _Unwind_VRS_Get_Internal(_Unwind_Context *context, _Unwind_VRS_RegClass regclass, uint32_t regno, _Unwind_VRS_DataRepresentation representation, void *valuep) { unw_cursor_t *cursor = (unw_cursor_t *)context; switch (regclass) { case _UVRSC_CORE: if (representation != _UVRSD_UINT32 || regno > 15) return _UVRSR_FAILED; - return unw_get_reg(cursor, (unw_regnum_t)(UNW_ARM_R0 + regno), - (unw_word_t *)valuep) == UNW_ESUCCESS + return __unw_get_reg(cursor, (unw_regnum_t)(UNW_ARM_R0 + regno), + (unw_word_t *)valuep) == UNW_ESUCCESS ? _UVRSR_OK : _UVRSR_FAILED; case _UVRSC_VFP: if (representation != _UVRSD_VFPX && representation != _UVRSD_DOUBLE) return _UVRSR_FAILED; if (representation == _UVRSD_VFPX) { // Can only touch d0-15 with FSTMFDX. if (regno > 15) return _UVRSR_FAILED; - unw_save_vfp_as_X(cursor); + __unw_save_vfp_as_X(cursor); } else { if (regno > 31) return _UVRSR_FAILED; } - return unw_get_fpreg(cursor, (unw_regnum_t)(UNW_ARM_D0 + regno), - (unw_fpreg_t *)valuep) == UNW_ESUCCESS + return __unw_get_fpreg(cursor, (unw_regnum_t)(UNW_ARM_D0 + regno), + (unw_fpreg_t *)valuep) == UNW_ESUCCESS ? _UVRSR_OK : _UVRSR_FAILED; #if defined(__ARM_WMMX) case _UVRSC_WMMXC: if (representation != _UVRSD_UINT32 || regno > 3) return _UVRSR_FAILED; - return unw_get_reg(cursor, (unw_regnum_t)(UNW_ARM_WC0 + regno), - (unw_word_t *)valuep) == UNW_ESUCCESS + return __unw_get_reg(cursor, (unw_regnum_t)(UNW_ARM_WC0 + regno), + (unw_word_t *)valuep) == UNW_ESUCCESS ? _UVRSR_OK : _UVRSR_FAILED; case _UVRSC_WMMXD: if (representation != _UVRSD_DOUBLE || regno > 31) return _UVRSR_FAILED; - return unw_get_fpreg(cursor, (unw_regnum_t)(UNW_ARM_WR0 + regno), - (unw_fpreg_t *)valuep) == UNW_ESUCCESS + return __unw_get_fpreg(cursor, (unw_regnum_t)(UNW_ARM_WR0 + regno), + (unw_fpreg_t *)valuep) == UNW_ESUCCESS ? _UVRSR_OK : _UVRSR_FAILED; #else case _UVRSC_WMMXC: case _UVRSC_WMMXD: break; #endif } _LIBUNWIND_ABORT("unsupported register class"); } _LIBUNWIND_EXPORT _Unwind_VRS_Result _Unwind_VRS_Get(_Unwind_Context *context, _Unwind_VRS_RegClass regclass, uint32_t regno, _Unwind_VRS_DataRepresentation representation, void *valuep) { _Unwind_VRS_Result result = _Unwind_VRS_Get_Internal(context, regclass, regno, representation, valuep); _LIBUNWIND_TRACE_API("_Unwind_VRS_Get(context=%p, regclass=%d, reg=%d, " "rep=%d, value=0x%llX, result = %d)", static_cast(context), regclass, regno, representation, ValueAsBitPattern(representation, valuep), result); return result; } _Unwind_VRS_Result _Unwind_VRS_Pop(_Unwind_Context *context, _Unwind_VRS_RegClass regclass, uint32_t discriminator, _Unwind_VRS_DataRepresentation representation) { _LIBUNWIND_TRACE_API("_Unwind_VRS_Pop(context=%p, regclass=%d, " "discriminator=%d, representation=%d)", static_cast(context), regclass, discriminator, representation); switch (regclass) { case _UVRSC_WMMXC: #if !defined(__ARM_WMMX) break; #endif case _UVRSC_CORE: { if (representation != _UVRSD_UINT32) return _UVRSR_FAILED; // When popping SP from the stack, we don't want to override it from the // computed new stack location. See EHABI #7.5.4 table 3. bool poppedSP = false; uint32_t* sp; if (_Unwind_VRS_Get(context, _UVRSC_CORE, UNW_ARM_SP, _UVRSD_UINT32, &sp) != _UVRSR_OK) { return _UVRSR_FAILED; } for (uint32_t i = 0; i < 16; ++i) { if (!(discriminator & static_cast(1 << i))) continue; uint32_t value = *sp++; if (regclass == _UVRSC_CORE && i == 13) poppedSP = true; if (_Unwind_VRS_Set(context, regclass, i, _UVRSD_UINT32, &value) != _UVRSR_OK) { return _UVRSR_FAILED; } } if (!poppedSP) { return _Unwind_VRS_Set(context, _UVRSC_CORE, UNW_ARM_SP, _UVRSD_UINT32, &sp); } return _UVRSR_OK; } case _UVRSC_WMMXD: #if !defined(__ARM_WMMX) break; #endif case _UVRSC_VFP: { if (representation != _UVRSD_VFPX && representation != _UVRSD_DOUBLE) return _UVRSR_FAILED; uint32_t first = discriminator >> 16; uint32_t count = discriminator & 0xffff; uint32_t end = first+count; uint32_t* sp; if (_Unwind_VRS_Get(context, _UVRSC_CORE, UNW_ARM_SP, _UVRSD_UINT32, &sp) != _UVRSR_OK) { return _UVRSR_FAILED; } // For _UVRSD_VFPX, we're assuming the data is stored in FSTMX "standard // format 1", which is equivalent to FSTMD + a padding word. for (uint32_t i = first; i < end; ++i) { // SP is only 32-bit aligned so don't copy 64-bit at a time. uint64_t value = *sp++; value |= ((uint64_t)(*sp++)) << 32; if (_Unwind_VRS_Set(context, regclass, i, representation, &value) != _UVRSR_OK) return _UVRSR_FAILED; } if (representation == _UVRSD_VFPX) ++sp; return _Unwind_VRS_Set(context, _UVRSC_CORE, UNW_ARM_SP, _UVRSD_UINT32, &sp); } } _LIBUNWIND_ABORT("unsupported register class"); } /// Called by personality handler during phase 2 to find the start of the /// function. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetRegionStart(struct _Unwind_Context *context) { unw_cursor_t *cursor = (unw_cursor_t *)context; unw_proc_info_t frameInfo; uintptr_t result = 0; - if (unw_get_proc_info(cursor, &frameInfo) == UNW_ESUCCESS) + if (__unw_get_proc_info(cursor, &frameInfo) == UNW_ESUCCESS) result = (uintptr_t)frameInfo.start_ip; _LIBUNWIND_TRACE_API("_Unwind_GetRegionStart(context=%p) => 0x%llX", static_cast(context), (long long)result); return result; } /// Called by personality handler during phase 2 if a foreign exception // is caught. _LIBUNWIND_EXPORT void _Unwind_DeleteException(_Unwind_Exception *exception_object) { _LIBUNWIND_TRACE_API("_Unwind_DeleteException(ex_obj=%p)", static_cast(exception_object)); if (exception_object->exception_cleanup != NULL) (*exception_object->exception_cleanup)(_URC_FOREIGN_EXCEPTION_CAUGHT, exception_object); } extern "C" _LIBUNWIND_EXPORT _Unwind_Reason_Code __gnu_unwind_frame(_Unwind_Exception *exception_object, struct _Unwind_Context *context) { unw_cursor_t *cursor = (unw_cursor_t *)context; - if (unw_step(cursor) != UNW_STEP_SUCCESS) + if (__unw_step(cursor) != UNW_STEP_SUCCESS) return _URC_FAILURE; return _URC_OK; } #endif // defined(_LIBUNWIND_ARM_EHABI) Index: projects/clang900-import/contrib/libunwind/src/Unwind-EHABI.h =================================================================== --- projects/clang900-import/contrib/libunwind/src/Unwind-EHABI.h (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/Unwind-EHABI.h (revision 351404) @@ -1,51 +1,50 @@ //===------------------------- Unwind-EHABI.hpp ---------------------------===// // -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // // //===----------------------------------------------------------------------===// #ifndef __UNWIND_EHABI_H__ #define __UNWIND_EHABI_H__ #include <__libunwind_config.h> #if defined(_LIBUNWIND_ARM_EHABI) #include #include // Unable to unwind in the ARM index table (section 5 EHABI). #define UNW_EXIDX_CANTUNWIND 0x1 static inline uint32_t signExtendPrel31(uint32_t data) { return data | ((data & 0x40000000u) << 1); } static inline uint32_t readPrel31(const uint32_t *data) { return (((uint32_t)(uintptr_t)data) + signExtendPrel31(*data)); } #if defined(__cplusplus) extern "C" { #endif extern _Unwind_Reason_Code __aeabi_unwind_cpp_pr0( _Unwind_State state, _Unwind_Control_Block *ucbp, _Unwind_Context *context); extern _Unwind_Reason_Code __aeabi_unwind_cpp_pr1( _Unwind_State state, _Unwind_Control_Block *ucbp, _Unwind_Context *context); extern _Unwind_Reason_Code __aeabi_unwind_cpp_pr2( _Unwind_State state, _Unwind_Control_Block *ucbp, _Unwind_Context *context); #if defined(__cplusplus) } // extern "C" #endif #endif // defined(_LIBUNWIND_ARM_EHABI) #endif // __UNWIND_EHABI_H__ Index: projects/clang900-import/contrib/libunwind/src/Unwind-seh.cpp =================================================================== --- projects/clang900-import/contrib/libunwind/src/Unwind-seh.cpp (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/Unwind-seh.cpp (revision 351404) @@ -1,491 +1,501 @@ //===--------------------------- Unwind-seh.cpp ---------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. -// //===----------------------------------------------------------------------===// // // Implements SEH-based Itanium C++ exceptions. // //===----------------------------------------------------------------------===// #include "config.h" #if defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) #include #include #include #include #include #include #include #include #include "libunwind_ext.h" #include "UnwindCursor.hpp" using namespace libunwind; #define STATUS_USER_DEFINED (1u << 29) #define STATUS_GCC_MAGIC (('G' << 16) | ('C' << 8) | 'C') #define MAKE_CUSTOM_STATUS(s, c) \ ((NTSTATUS)(((s) << 30) | STATUS_USER_DEFINED | (c))) #define MAKE_GCC_EXCEPTION(c) \ MAKE_CUSTOM_STATUS(STATUS_SEVERITY_SUCCESS, STATUS_GCC_MAGIC | ((c) << 24)) /// SEH exception raised by libunwind when the program calls /// \c _Unwind_RaiseException. #define STATUS_GCC_THROW MAKE_GCC_EXCEPTION(0) // 0x20474343 /// SEH exception raised by libunwind to initiate phase 2 of exception /// handling. #define STATUS_GCC_UNWIND MAKE_GCC_EXCEPTION(1) // 0x21474343 /// Class of foreign exceptions based on unrecognized SEH exceptions. static const uint64_t kSEHExceptionClass = 0x434C4E4753454800; // CLNGSEH\0 /// Exception cleanup routine used by \c _GCC_specific_handler to /// free foreign exceptions. static void seh_exc_cleanup(_Unwind_Reason_Code urc, _Unwind_Exception *exc) { + (void)urc; if (exc->exception_class != kSEHExceptionClass) _LIBUNWIND_ABORT("SEH cleanup called on non-SEH exception"); free(exc); } -static int _unw_init_seh(unw_cursor_t *cursor, CONTEXT *ctx); -static DISPATCHER_CONTEXT *_unw_seh_get_disp_ctx(unw_cursor_t *cursor); -static void _unw_seh_set_disp_ctx(unw_cursor_t *cursor, DISPATCHER_CONTEXT *disp); +static int __unw_init_seh(unw_cursor_t *cursor, CONTEXT *ctx); +static DISPATCHER_CONTEXT *__unw_seh_get_disp_ctx(unw_cursor_t *cursor); +static void __unw_seh_set_disp_ctx(unw_cursor_t *cursor, + DISPATCHER_CONTEXT *disp); /// Common implementation of SEH-style handler functions used by Itanium- /// style frames. Depending on how and why it was called, it may do one of: /// a) Delegate to the given Itanium-style personality function; or /// b) Initiate a collided unwind to halt unwinding. _LIBUNWIND_EXPORT EXCEPTION_DISPOSITION _GCC_specific_handler(PEXCEPTION_RECORD ms_exc, PVOID frame, PCONTEXT ms_ctx, DISPATCHER_CONTEXT *disp, __personality_routine pers) { - unw_context_t uc; unw_cursor_t cursor; _Unwind_Exception *exc; _Unwind_Action action; struct _Unwind_Context *ctx = nullptr; _Unwind_Reason_Code urc; uintptr_t retval, target; bool ours = false; - _LIBUNWIND_TRACE_UNWINDING("_GCC_specific_handler(%#010x(%x), %p)", ms_exc->ExceptionCode, ms_exc->ExceptionFlags, frame); + _LIBUNWIND_TRACE_UNWINDING("_GCC_specific_handler(%#010lx(%lx), %p)", + ms_exc->ExceptionCode, ms_exc->ExceptionFlags, + (void *)frame); if (ms_exc->ExceptionCode == STATUS_GCC_UNWIND) { if (IS_TARGET_UNWIND(ms_exc->ExceptionFlags)) { // Set up the upper return value (the lower one and the target PC // were set in the call to RtlUnwindEx()) for the landing pad. #ifdef __x86_64__ disp->ContextRecord->Rdx = ms_exc->ExceptionInformation[3]; #elif defined(__arm__) disp->ContextRecord->R1 = ms_exc->ExceptionInformation[3]; #elif defined(__aarch64__) disp->ContextRecord->X1 = ms_exc->ExceptionInformation[3]; #endif } // This is the collided unwind to the landing pad. Nothing to do. return ExceptionContinueSearch; } if (ms_exc->ExceptionCode == STATUS_GCC_THROW) { // This is (probably) a libunwind-controlled exception/unwind. Recover the // parameters which we set below, and pass them to the personality function. ours = true; exc = (_Unwind_Exception *)ms_exc->ExceptionInformation[0]; if (!IS_UNWINDING(ms_exc->ExceptionFlags) && ms_exc->NumberParameters > 1) { ctx = (struct _Unwind_Context *)ms_exc->ExceptionInformation[1]; action = (_Unwind_Action)ms_exc->ExceptionInformation[2]; } } else { // Foreign exception. exc = (_Unwind_Exception *)malloc(sizeof(_Unwind_Exception)); exc->exception_class = kSEHExceptionClass; exc->exception_cleanup = seh_exc_cleanup; memset(exc->private_, 0, sizeof(exc->private_)); } if (!ctx) { - _unw_init_seh(&cursor, disp->ContextRecord); - _unw_seh_set_disp_ctx(&cursor, disp); - unw_set_reg(&cursor, UNW_REG_IP, disp->ControlPc-1); + __unw_init_seh(&cursor, disp->ContextRecord); + __unw_seh_set_disp_ctx(&cursor, disp); + __unw_set_reg(&cursor, UNW_REG_IP, disp->ControlPc - 1); ctx = (struct _Unwind_Context *)&cursor; if (!IS_UNWINDING(ms_exc->ExceptionFlags)) { if (ours && ms_exc->NumberParameters > 1) action = (_Unwind_Action)(_UA_CLEANUP_PHASE | _UA_FORCE_UNWIND); else action = _UA_SEARCH_PHASE; } else { if (ours && ms_exc->ExceptionInformation[1] == (ULONG_PTR)frame) action = (_Unwind_Action)(_UA_CLEANUP_PHASE | _UA_HANDLER_FRAME); else action = _UA_CLEANUP_PHASE; } } - _LIBUNWIND_TRACE_UNWINDING("_GCC_specific_handler() calling personality function %p(1, %d, %llx, %p, %p)", pers, action, exc->exception_class, exc, ctx); + _LIBUNWIND_TRACE_UNWINDING("_GCC_specific_handler() calling personality " + "function %p(1, %d, %llx, %p, %p)", + (void *)pers, action, exc->exception_class, + (void *)exc, (void *)ctx); urc = pers(1, action, exc->exception_class, exc, ctx); _LIBUNWIND_TRACE_UNWINDING("_GCC_specific_handler() personality returned %d", urc); switch (urc) { case _URC_CONTINUE_UNWIND: // If we're in phase 2, and the personality routine said to continue // at the target frame, we're in real trouble. if (action & _UA_HANDLER_FRAME) _LIBUNWIND_ABORT("Personality continued unwind at the target frame!"); return ExceptionContinueSearch; case _URC_HANDLER_FOUND: // If we were called by __libunwind_seh_personality(), indicate that // a handler was found; otherwise, initiate phase 2 by unwinding. if (ours && ms_exc->NumberParameters > 1) return 4 /* ExecptionExecuteHandler in mingw */; // This should never happen in phase 2. if (IS_UNWINDING(ms_exc->ExceptionFlags)) _LIBUNWIND_ABORT("Personality indicated exception handler in phase 2!"); exc->private_[1] = (ULONG_PTR)frame; if (ours) { ms_exc->NumberParameters = 4; ms_exc->ExceptionInformation[1] = (ULONG_PTR)frame; } // FIXME: Indicate target frame in foreign case! // phase 2: the clean up phase RtlUnwindEx(frame, (PVOID)disp->ControlPc, ms_exc, exc, ms_ctx, disp->HistoryTable); _LIBUNWIND_ABORT("RtlUnwindEx() failed"); case _URC_INSTALL_CONTEXT: { // If we were called by __libunwind_seh_personality(), indicate that // a handler was found; otherwise, it's time to initiate a collided // unwind to the target. if (ours && !IS_UNWINDING(ms_exc->ExceptionFlags) && ms_exc->NumberParameters > 1) return 4 /* ExecptionExecuteHandler in mingw */; // This should never happen in phase 1. if (!IS_UNWINDING(ms_exc->ExceptionFlags)) _LIBUNWIND_ABORT("Personality installed context during phase 1!"); #ifdef __x86_64__ exc->private_[2] = disp->TargetIp; - unw_get_reg(&cursor, UNW_X86_64_RAX, &retval); - unw_get_reg(&cursor, UNW_X86_64_RDX, &exc->private_[3]); + __unw_get_reg(&cursor, UNW_X86_64_RAX, &retval); + __unw_get_reg(&cursor, UNW_X86_64_RDX, &exc->private_[3]); #elif defined(__arm__) exc->private_[2] = disp->TargetPc; - unw_get_reg(&cursor, UNW_ARM_R0, &retval); - unw_get_reg(&cursor, UNW_ARM_R1, &exc->private_[3]); + __unw_get_reg(&cursor, UNW_ARM_R0, &retval); + __unw_get_reg(&cursor, UNW_ARM_R1, &exc->private_[3]); #elif defined(__aarch64__) exc->private_[2] = disp->TargetPc; - unw_get_reg(&cursor, UNW_ARM64_X0, &retval); - unw_get_reg(&cursor, UNW_ARM64_X1, &exc->private_[3]); + __unw_get_reg(&cursor, UNW_ARM64_X0, &retval); + __unw_get_reg(&cursor, UNW_ARM64_X1, &exc->private_[3]); #endif - unw_get_reg(&cursor, UNW_REG_IP, &target); + __unw_get_reg(&cursor, UNW_REG_IP, &target); ms_exc->ExceptionCode = STATUS_GCC_UNWIND; #ifdef __x86_64__ ms_exc->ExceptionInformation[2] = disp->TargetIp; #elif defined(__arm__) || defined(__aarch64__) ms_exc->ExceptionInformation[2] = disp->TargetPc; #endif ms_exc->ExceptionInformation[3] = exc->private_[3]; // Give NTRTL some scratch space to keep track of the collided unwind. // Don't use the one that was passed in; we don't want to overwrite the // context in the DISPATCHER_CONTEXT. CONTEXT new_ctx; RtlUnwindEx(frame, (PVOID)target, ms_exc, (PVOID)retval, &new_ctx, disp->HistoryTable); _LIBUNWIND_ABORT("RtlUnwindEx() failed"); } // Anything else indicates a serious problem. default: return ExceptionContinueExecution; } } -/// Personality function returned by \c unw_get_proc_info() in SEH contexts. +/// Personality function returned by \c __unw_get_proc_info() in SEH contexts. /// This is a wrapper that calls the real SEH handler function, which in /// turn (at least, for Itanium-style frames) calls the real Itanium /// personality function (see \c _GCC_specific_handler()). extern "C" _Unwind_Reason_Code __libunwind_seh_personality(int version, _Unwind_Action state, uint64_t klass, _Unwind_Exception *exc, struct _Unwind_Context *context) { + (void)version; + (void)klass; EXCEPTION_RECORD ms_exc; bool phase2 = (state & (_UA_SEARCH_PHASE|_UA_CLEANUP_PHASE)) == _UA_CLEANUP_PHASE; ms_exc.ExceptionCode = STATUS_GCC_THROW; ms_exc.ExceptionFlags = 0; ms_exc.NumberParameters = 3; ms_exc.ExceptionInformation[0] = (ULONG_PTR)exc; ms_exc.ExceptionInformation[1] = (ULONG_PTR)context; ms_exc.ExceptionInformation[2] = state; - DISPATCHER_CONTEXT *disp_ctx = _unw_seh_get_disp_ctx((unw_cursor_t *)context); + DISPATCHER_CONTEXT *disp_ctx = + __unw_seh_get_disp_ctx((unw_cursor_t *)context); EXCEPTION_DISPOSITION ms_act = disp_ctx->LanguageHandler(&ms_exc, (PVOID)disp_ctx->EstablisherFrame, disp_ctx->ContextRecord, disp_ctx); switch (ms_act) { case ExceptionContinueSearch: return _URC_CONTINUE_UNWIND; case 4 /*ExceptionExecuteHandler*/: return phase2 ? _URC_INSTALL_CONTEXT : _URC_HANDLER_FOUND; default: return phase2 ? _URC_FATAL_PHASE2_ERROR : _URC_FATAL_PHASE1_ERROR; } } static _Unwind_Reason_Code unwind_phase2_forced(unw_context_t *uc, _Unwind_Exception *exception_object, _Unwind_Stop_Fn stop, void *stop_parameter) { unw_cursor_t cursor2; - unw_init_local(&cursor2, uc); + __unw_init_local(&cursor2, uc); // Walk each frame until we reach where search phase said to stop - while (unw_step(&cursor2) > 0) { + while (__unw_step(&cursor2) > 0) { // Update info about this frame. unw_proc_info_t frameInfo; - if (unw_get_proc_info(&cursor2, &frameInfo) != UNW_ESUCCESS) { - _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): unw_step " + if (__unw_get_proc_info(&cursor2, &frameInfo) != UNW_ESUCCESS) { + _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): __unw_step " "failed => _URC_END_OF_STACK", (void *)exception_object); return _URC_FATAL_PHASE2_ERROR; } // When tracing, print state information. if (_LIBUNWIND_TRACING_UNWINDING) { char functionBuf[512]; const char *functionName = functionBuf; unw_word_t offset; - if ((unw_get_proc_name(&cursor2, functionBuf, sizeof(functionBuf), - &offset) != UNW_ESUCCESS) || + if ((__unw_get_proc_name(&cursor2, functionBuf, sizeof(functionBuf), + &offset) != UNW_ESUCCESS) || (frameInfo.start_ip + offset > frameInfo.end_ip)) functionName = ".anonymous."; _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2_forced(ex_ojb=%p): start_ip=0x%" PRIx64 ", func=%s, lsda=0x%" PRIx64 ", personality=0x%" PRIx64, (void *)exception_object, frameInfo.start_ip, functionName, frameInfo.lsda, frameInfo.handler); } // Call stop function at each frame. _Unwind_Action action = (_Unwind_Action)(_UA_FORCE_UNWIND | _UA_CLEANUP_PHASE); _Unwind_Reason_Code stopResult = (*stop)(1, action, exception_object->exception_class, exception_object, (struct _Unwind_Context *)(&cursor2), stop_parameter); _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2_forced(ex_ojb=%p): stop function returned %d", (void *)exception_object, stopResult); if (stopResult != _URC_NO_REASON) { _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2_forced(ex_ojb=%p): stopped by stop function", (void *)exception_object); return _URC_FATAL_PHASE2_ERROR; } // If there is a personality routine, tell it we are unwinding. if (frameInfo.handler != 0) { __personality_routine p = (__personality_routine)(intptr_t)(frameInfo.handler); _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2_forced(ex_ojb=%p): calling personality function %p", (void *)exception_object, (void *)(uintptr_t)p); _Unwind_Reason_Code personalityResult = (*p)(1, action, exception_object->exception_class, exception_object, (struct _Unwind_Context *)(&cursor2)); switch (personalityResult) { case _URC_CONTINUE_UNWIND: _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): " "personality returned " "_URC_CONTINUE_UNWIND", (void *)exception_object); // Destructors called, continue unwinding break; case _URC_INSTALL_CONTEXT: _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): " "personality returned " "_URC_INSTALL_CONTEXT", (void *)exception_object); // We may get control back if landing pad calls _Unwind_Resume(). - unw_resume(&cursor2); + __unw_resume(&cursor2); break; default: // Personality routine returned an unknown result code. _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): " "personality returned %d, " "_URC_FATAL_PHASE2_ERROR", (void *)exception_object, personalityResult); return _URC_FATAL_PHASE2_ERROR; } } } // Call stop function one last time and tell it we've reached the end // of the stack. _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): calling stop " "function with _UA_END_OF_STACK", (void *)exception_object); _Unwind_Action lastAction = (_Unwind_Action)(_UA_FORCE_UNWIND | _UA_CLEANUP_PHASE | _UA_END_OF_STACK); (*stop)(1, lastAction, exception_object->exception_class, exception_object, (struct _Unwind_Context *)(&cursor2), stop_parameter); // Clean up phase did not resume at the frame that the search phase said it // would. return _URC_FATAL_PHASE2_ERROR; } /// Called by \c __cxa_throw(). Only returns if there is a fatal error. _LIBUNWIND_EXPORT _Unwind_Reason_Code _Unwind_RaiseException(_Unwind_Exception *exception_object) { _LIBUNWIND_TRACE_API("_Unwind_RaiseException(ex_obj=%p)", (void *)exception_object); // Mark that this is a non-forced unwind, so _Unwind_Resume() // can do the right thing. memset(exception_object->private_, 0, sizeof(exception_object->private_)); // phase 1: the search phase // We'll let the system do that for us. RaiseException(STATUS_GCC_THROW, 0, 1, (ULONG_PTR *)&exception_object); // If we get here, either something went horribly wrong or we reached the // top of the stack. Either way, let libc++abi call std::terminate(). return _URC_END_OF_STACK; } /// When \c _Unwind_RaiseException() is in phase2, it hands control /// to the personality function at each frame. The personality /// may force a jump to a landing pad in that function; the landing /// pad code may then call \c _Unwind_Resume() to continue with the /// unwinding. Note: the call to \c _Unwind_Resume() is from compiler /// geneated user code. All other \c _Unwind_* routines are called /// by the C++ runtime \c __cxa_* routines. /// /// Note: re-throwing an exception (as opposed to continuing the unwind) /// is implemented by having the code call \c __cxa_rethrow() which /// in turn calls \c _Unwind_Resume_or_Rethrow(). _LIBUNWIND_EXPORT void _Unwind_Resume(_Unwind_Exception *exception_object) { _LIBUNWIND_TRACE_API("_Unwind_Resume(ex_obj=%p)", (void *)exception_object); if (exception_object->private_[0] != 0) { unw_context_t uc; - unw_getcontext(&uc); + __unw_getcontext(&uc); unwind_phase2_forced(&uc, exception_object, (_Unwind_Stop_Fn) exception_object->private_[0], (void *)exception_object->private_[4]); } else { // Recover the parameters for the unwind from the exception object // so we can start unwinding again. EXCEPTION_RECORD ms_exc; CONTEXT ms_ctx; UNWIND_HISTORY_TABLE hist; memset(&ms_exc, 0, sizeof(ms_exc)); memset(&hist, 0, sizeof(hist)); ms_exc.ExceptionCode = STATUS_GCC_THROW; ms_exc.ExceptionFlags = EXCEPTION_NONCONTINUABLE; ms_exc.NumberParameters = 4; ms_exc.ExceptionInformation[0] = (ULONG_PTR)exception_object; ms_exc.ExceptionInformation[1] = exception_object->private_[1]; ms_exc.ExceptionInformation[2] = exception_object->private_[2]; ms_exc.ExceptionInformation[3] = exception_object->private_[3]; RtlUnwindEx((PVOID)exception_object->private_[1], (PVOID)exception_object->private_[2], &ms_exc, exception_object, &ms_ctx, &hist); } // Clients assume _Unwind_Resume() does not return, so all we can do is abort. _LIBUNWIND_ABORT("_Unwind_Resume() can't return"); } /// Not used by C++. /// Unwinds stack, calling "stop" function at each frame. /// Could be used to implement \c longjmp(). _LIBUNWIND_EXPORT _Unwind_Reason_Code _Unwind_ForcedUnwind(_Unwind_Exception *exception_object, _Unwind_Stop_Fn stop, void *stop_parameter) { _LIBUNWIND_TRACE_API("_Unwind_ForcedUnwind(ex_obj=%p, stop=%p)", (void *)exception_object, (void *)(uintptr_t)stop); unw_context_t uc; - unw_getcontext(&uc); + __unw_getcontext(&uc); // Mark that this is a forced unwind, so _Unwind_Resume() can do // the right thing. exception_object->private_[0] = (uintptr_t) stop; exception_object->private_[4] = (uintptr_t) stop_parameter; // do it return unwind_phase2_forced(&uc, exception_object, stop, stop_parameter); } /// Called by personality handler during phase 2 to get LSDA for current frame. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetLanguageSpecificData(struct _Unwind_Context *context) { - uintptr_t result = (uintptr_t)_unw_seh_get_disp_ctx((unw_cursor_t *)context)->HandlerData; + uintptr_t result = + (uintptr_t)__unw_seh_get_disp_ctx((unw_cursor_t *)context)->HandlerData; _LIBUNWIND_TRACE_API( "_Unwind_GetLanguageSpecificData(context=%p) => 0x%" PRIxPTR, (void *)context, result); return result; } /// Called by personality handler during phase 2 to find the start of the /// function. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetRegionStart(struct _Unwind_Context *context) { - DISPATCHER_CONTEXT *disp = _unw_seh_get_disp_ctx((unw_cursor_t *)context); + DISPATCHER_CONTEXT *disp = __unw_seh_get_disp_ctx((unw_cursor_t *)context); uintptr_t result = (uintptr_t)disp->FunctionEntry->BeginAddress + disp->ImageBase; _LIBUNWIND_TRACE_API("_Unwind_GetRegionStart(context=%p) => 0x%" PRIxPTR, (void *)context, result); return result; } -static int -_unw_init_seh(unw_cursor_t *cursor, CONTEXT *context) { +static int __unw_init_seh(unw_cursor_t *cursor, CONTEXT *context) { #ifdef _LIBUNWIND_TARGET_X86_64 - new ((void *)cursor) UnwindCursor( - context, LocalAddressSpace::sThisAddressSpace); + new (reinterpret_cast *>(cursor)) + UnwindCursor( + context, LocalAddressSpace::sThisAddressSpace); auto *co = reinterpret_cast(cursor); co->setInfoBasedOnIPRegister(); return UNW_ESUCCESS; #elif defined(_LIBUNWIND_TARGET_ARM) - new ((void *)cursor) UnwindCursor( - context, LocalAddressSpace::sThisAddressSpace); + new (reinterpret_cast *>(cursor)) + UnwindCursor( + context, LocalAddressSpace::sThisAddressSpace); auto *co = reinterpret_cast(cursor); co->setInfoBasedOnIPRegister(); return UNW_ESUCCESS; #elif defined(_LIBUNWIND_TARGET_AARCH64) - new ((void *)cursor) UnwindCursor( - context, LocalAddressSpace::sThisAddressSpace); + new (reinterpret_cast *>(cursor)) + UnwindCursor( + context, LocalAddressSpace::sThisAddressSpace); auto *co = reinterpret_cast(cursor); co->setInfoBasedOnIPRegister(); return UNW_ESUCCESS; #else return UNW_EINVAL; #endif } -static DISPATCHER_CONTEXT * -_unw_seh_get_disp_ctx(unw_cursor_t *cursor) { +static DISPATCHER_CONTEXT *__unw_seh_get_disp_ctx(unw_cursor_t *cursor) { #ifdef _LIBUNWIND_TARGET_X86_64 return reinterpret_cast *>(cursor)->getDispatcherContext(); #elif defined(_LIBUNWIND_TARGET_ARM) return reinterpret_cast *>(cursor)->getDispatcherContext(); #elif defined(_LIBUNWIND_TARGET_AARCH64) return reinterpret_cast *>(cursor)->getDispatcherContext(); #else return nullptr; #endif } -static void -_unw_seh_set_disp_ctx(unw_cursor_t *cursor, DISPATCHER_CONTEXT *disp) { +static void __unw_seh_set_disp_ctx(unw_cursor_t *cursor, + DISPATCHER_CONTEXT *disp) { #ifdef _LIBUNWIND_TARGET_X86_64 reinterpret_cast *>(cursor)->setDispatcherContext(disp); #elif defined(_LIBUNWIND_TARGET_ARM) reinterpret_cast *>(cursor)->setDispatcherContext(disp); #elif defined(_LIBUNWIND_TARGET_AARCH64) reinterpret_cast *>(cursor)->setDispatcherContext(disp); #endif } #endif // defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) Index: projects/clang900-import/contrib/libunwind/src/Unwind-sjlj.c =================================================================== --- projects/clang900-import/contrib/libunwind/src/Unwind-sjlj.c (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/Unwind-sjlj.c (revision 351404) @@ -1,504 +1,516 @@ //===--------------------------- Unwind-sjlj.c ----------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // Implements setjump-longjump based C++ exceptions // //===----------------------------------------------------------------------===// #include +#include #include #include #include #include "config.h" /// With SJLJ based exceptions, any function that has a catch clause or needs to /// do any clean up when an exception propagates through it, needs to call /// \c _Unwind_SjLj_Register at the start of the function and /// \c _Unwind_SjLj_Unregister at the end. The register function is called with /// the address of a block of memory in the function's stack frame. The runtime /// keeps a linked list (stack) of these blocks - one per thread. The calling /// function also sets the personality and lsda fields of the block. #if defined(_LIBUNWIND_BUILD_SJLJ_APIS) struct _Unwind_FunctionContext { // next function in stack of handlers struct _Unwind_FunctionContext *prev; // set by calling function before registering to be the landing pad uint32_t resumeLocation; // set by personality handler to be parameters passed to landing pad function uint32_t resumeParameters[4]; // set by calling function before registering __personality_routine personality; // arm offset=24 uintptr_t lsda; // arm offset=28 // variable length array, contains registers to restore // 0 = r7, 1 = pc, 2 = sp void *jbuf[]; }; #if defined(_LIBUNWIND_HAS_NO_THREADS) # define _LIBUNWIND_THREAD_LOCAL #else # if __STDC_VERSION__ >= 201112L # define _LIBUNWIND_THREAD_LOCAL _Thread_local -# elif defined(_WIN32) +# elif defined(_MSC_VER) # define _LIBUNWIND_THREAD_LOCAL __declspec(thread) # elif defined(__GNUC__) || defined(__clang__) # define _LIBUNWIND_THREAD_LOCAL __thread # else # error Unable to create thread local storage # endif #endif #if !defined(FOR_DYLD) #if defined(__APPLE__) #include #else static _LIBUNWIND_THREAD_LOCAL struct _Unwind_FunctionContext *stack = NULL; #endif static struct _Unwind_FunctionContext *__Unwind_SjLj_GetTopOfFunctionStack() { #if defined(__APPLE__) return _pthread_getspecific_direct(__PTK_LIBC_DYLD_Unwind_SjLj_Key); #else return stack; #endif } static void __Unwind_SjLj_SetTopOfFunctionStack(struct _Unwind_FunctionContext *fc) { #if defined(__APPLE__) _pthread_setspecific_direct(__PTK_LIBC_DYLD_Unwind_SjLj_Key, fc); #else stack = fc; #endif } #endif /// Called at start of each function that catches exceptions _LIBUNWIND_EXPORT void _Unwind_SjLj_Register(struct _Unwind_FunctionContext *fc) { fc->prev = __Unwind_SjLj_GetTopOfFunctionStack(); __Unwind_SjLj_SetTopOfFunctionStack(fc); } /// Called at end of each function that catches exceptions _LIBUNWIND_EXPORT void _Unwind_SjLj_Unregister(struct _Unwind_FunctionContext *fc) { __Unwind_SjLj_SetTopOfFunctionStack(fc->prev); } static _Unwind_Reason_Code unwind_phase1(struct _Unwind_Exception *exception_object) { _Unwind_FunctionContext_t c = __Unwind_SjLj_GetTopOfFunctionStack(); - _LIBUNWIND_TRACE_UNWINDING("unwind_phase1: initial function-context=%p", c); + _LIBUNWIND_TRACE_UNWINDING("unwind_phase1: initial function-context=%p", + (void *)c); // walk each frame looking for a place to stop for (bool handlerNotFound = true; handlerNotFound; c = c->prev) { // check for no more frames if (c == NULL) { _LIBUNWIND_TRACE_UNWINDING("unwind_phase1(ex_ojb=%p): reached " "bottom => _URC_END_OF_STACK", - exception_object); + (void *)exception_object); return _URC_END_OF_STACK; } - _LIBUNWIND_TRACE_UNWINDING("unwind_phase1: function-context=%p", c); + _LIBUNWIND_TRACE_UNWINDING("unwind_phase1: function-context=%p", (void *)c); // if there is a personality routine, ask it if it will want to stop at this // frame if (c->personality != NULL) { _LIBUNWIND_TRACE_UNWINDING("unwind_phase1(ex_ojb=%p): calling " - "personality function %p", - exception_object, c->personality); + "personality function %p", + (void *)exception_object, + (void *)c->personality); _Unwind_Reason_Code personalityResult = (*c->personality)( 1, _UA_SEARCH_PHASE, exception_object->exception_class, exception_object, (struct _Unwind_Context *)c); switch (personalityResult) { case _URC_HANDLER_FOUND: // found a catch clause or locals that need destructing in this frame // stop search and remember function context handlerNotFound = false; exception_object->private_2 = (uintptr_t) c; _LIBUNWIND_TRACE_UNWINDING("unwind_phase1(ex_ojb=%p): " - "_URC_HANDLER_FOUND", exception_object); + "_URC_HANDLER_FOUND", + (void *)exception_object); return _URC_NO_REASON; case _URC_CONTINUE_UNWIND: _LIBUNWIND_TRACE_UNWINDING("unwind_phase1(ex_ojb=%p): " - "_URC_CONTINUE_UNWIND", exception_object); + "_URC_CONTINUE_UNWIND", + (void *)exception_object); // continue unwinding break; default: // something went wrong _LIBUNWIND_TRACE_UNWINDING( "unwind_phase1(ex_ojb=%p): _URC_FATAL_PHASE1_ERROR", - exception_object); + (void *)exception_object); return _URC_FATAL_PHASE1_ERROR; } } } return _URC_NO_REASON; } static _Unwind_Reason_Code unwind_phase2(struct _Unwind_Exception *exception_object) { - _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p)", exception_object); + _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p)", + (void *)exception_object); // walk each frame until we reach where search phase said to stop _Unwind_FunctionContext_t c = __Unwind_SjLj_GetTopOfFunctionStack(); while (true) { _LIBUNWIND_TRACE_UNWINDING("unwind_phase2s(ex_ojb=%p): context=%p", - exception_object, c); + (void *)exception_object, (void *)c); // check for no more frames if (c == NULL) { - _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p): unw_step() reached " - "bottom => _URC_END_OF_STACK", - exception_object); + _LIBUNWIND_TRACE_UNWINDING( + "unwind_phase2(ex_ojb=%p): __unw_step() reached " + "bottom => _URC_END_OF_STACK", + (void *)exception_object); return _URC_END_OF_STACK; } // if there is a personality routine, tell it we are unwinding if (c->personality != NULL) { _Unwind_Action action = _UA_CLEANUP_PHASE; if ((uintptr_t) c == exception_object->private_2) action = (_Unwind_Action)( _UA_CLEANUP_PHASE | _UA_HANDLER_FRAME); // tell personality this was the frame it marked // in phase 1 _Unwind_Reason_Code personalityResult = (*c->personality)(1, action, exception_object->exception_class, exception_object, (struct _Unwind_Context *)c); switch (personalityResult) { case _URC_CONTINUE_UNWIND: // continue unwinding _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2(ex_ojb=%p): _URC_CONTINUE_UNWIND", - exception_object); + (void *)exception_object); if ((uintptr_t) c == exception_object->private_2) { // phase 1 said we would stop at this frame, but we did not... _LIBUNWIND_ABORT("during phase1 personality function said it would " "stop here, but now if phase2 it did not stop here"); } break; case _URC_INSTALL_CONTEXT: _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p): " - "_URC_INSTALL_CONTEXT, will resume at " - "landing pad %p", - exception_object, c->jbuf[1]); + "_URC_INSTALL_CONTEXT, will resume at " + "landing pad %p", + (void *)exception_object, c->jbuf[1]); // personality routine says to transfer control to landing pad // we may get control back if landing pad calls _Unwind_Resume() __Unwind_SjLj_SetTopOfFunctionStack(c); __builtin_longjmp(c->jbuf, 1); - // unw_resume() only returns if there was an error + // __unw_resume() only returns if there was an error return _URC_FATAL_PHASE2_ERROR; default: // something went wrong _LIBUNWIND_DEBUG_LOG("personality function returned unknown result %d", personalityResult); return _URC_FATAL_PHASE2_ERROR; } } c = c->prev; } // clean up phase did not resume at the frame that the search phase said it // would return _URC_FATAL_PHASE2_ERROR; } static _Unwind_Reason_Code unwind_phase2_forced(struct _Unwind_Exception *exception_object, _Unwind_Stop_Fn stop, void *stop_parameter) { // walk each frame until we reach where search phase said to stop _Unwind_FunctionContext_t c = __Unwind_SjLj_GetTopOfFunctionStack(); while (true) { // get next frame (skip over first which is _Unwind_RaiseException) if (c == NULL) { - _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p): unw_step() reached " - "bottom => _URC_END_OF_STACK", - exception_object); + _LIBUNWIND_TRACE_UNWINDING( + "unwind_phase2(ex_ojb=%p): __unw_step() reached " + "bottom => _URC_END_OF_STACK", + (void *)exception_object); return _URC_END_OF_STACK; } // call stop function at each frame _Unwind_Action action = (_Unwind_Action)(_UA_FORCE_UNWIND | _UA_CLEANUP_PHASE); _Unwind_Reason_Code stopResult = (*stop)(1, action, exception_object->exception_class, exception_object, (struct _Unwind_Context *)c, stop_parameter); _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): " "stop function returned %d", - exception_object, stopResult); + (void *)exception_object, stopResult); if (stopResult != _URC_NO_REASON) { _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): " "stopped by stop function", - exception_object); + (void *)exception_object); return _URC_FATAL_PHASE2_ERROR; } // if there is a personality routine, tell it we are unwinding if (c->personality != NULL) { __personality_routine p = (__personality_routine) c->personality; _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): " "calling personality function %p", - exception_object, p); + (void *)exception_object, (void *)p); _Unwind_Reason_Code personalityResult = (*p)(1, action, exception_object->exception_class, exception_object, (struct _Unwind_Context *)c); switch (personalityResult) { case _URC_CONTINUE_UNWIND: _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): " "personality returned _URC_CONTINUE_UNWIND", - exception_object); + (void *)exception_object); // destructors called, continue unwinding break; case _URC_INSTALL_CONTEXT: _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): " "personality returned _URC_INSTALL_CONTEXT", - exception_object); + (void *)exception_object); // we may get control back if landing pad calls _Unwind_Resume() __Unwind_SjLj_SetTopOfFunctionStack(c); __builtin_longjmp(c->jbuf, 1); break; default: // something went wrong _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): " "personality returned %d, " "_URC_FATAL_PHASE2_ERROR", - exception_object, personalityResult); + (void *)exception_object, personalityResult); return _URC_FATAL_PHASE2_ERROR; } } c = c->prev; } // call stop function one last time and tell it we've reached the end of the // stack _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): calling stop " - "function with _UA_END_OF_STACK", - exception_object); + "function with _UA_END_OF_STACK", + (void *)exception_object); _Unwind_Action lastAction = (_Unwind_Action)(_UA_FORCE_UNWIND | _UA_CLEANUP_PHASE | _UA_END_OF_STACK); (*stop)(1, lastAction, exception_object->exception_class, exception_object, (struct _Unwind_Context *)c, stop_parameter); // clean up phase did not resume at the frame that the search phase said it // would return _URC_FATAL_PHASE2_ERROR; } /// Called by __cxa_throw. Only returns if there is a fatal error _LIBUNWIND_EXPORT _Unwind_Reason_Code _Unwind_SjLj_RaiseException(struct _Unwind_Exception *exception_object) { - _LIBUNWIND_TRACE_API("_Unwind_SjLj_RaiseException(ex_obj=%p)", exception_object); + _LIBUNWIND_TRACE_API("_Unwind_SjLj_RaiseException(ex_obj=%p)", + (void *)exception_object); // mark that this is a non-forced unwind, so _Unwind_Resume() can do the right // thing exception_object->private_1 = 0; exception_object->private_2 = 0; // phase 1: the search phase _Unwind_Reason_Code phase1 = unwind_phase1(exception_object); if (phase1 != _URC_NO_REASON) return phase1; // phase 2: the clean up phase return unwind_phase2(exception_object); } /// When _Unwind_RaiseException() is in phase2, it hands control /// to the personality function at each frame. The personality /// may force a jump to a landing pad in that function, the landing /// pad code may then call _Unwind_Resume() to continue with the /// unwinding. Note: the call to _Unwind_Resume() is from compiler /// geneated user code. All other _Unwind_* routines are called /// by the C++ runtime __cxa_* routines. /// /// Re-throwing an exception is implemented by having the code call /// __cxa_rethrow() which in turn calls _Unwind_Resume_or_Rethrow() _LIBUNWIND_EXPORT void _Unwind_SjLj_Resume(struct _Unwind_Exception *exception_object) { - _LIBUNWIND_TRACE_API("_Unwind_SjLj_Resume(ex_obj=%p)", exception_object); + _LIBUNWIND_TRACE_API("_Unwind_SjLj_Resume(ex_obj=%p)", + (void *)exception_object); if (exception_object->private_1 != 0) unwind_phase2_forced(exception_object, (_Unwind_Stop_Fn) exception_object->private_1, (void *)exception_object->private_2); else unwind_phase2(exception_object); // clients assume _Unwind_Resume() does not return, so all we can do is abort. _LIBUNWIND_ABORT("_Unwind_SjLj_Resume() can't return"); } /// Called by __cxa_rethrow(). _LIBUNWIND_EXPORT _Unwind_Reason_Code _Unwind_SjLj_Resume_or_Rethrow(struct _Unwind_Exception *exception_object) { _LIBUNWIND_TRACE_API("__Unwind_SjLj_Resume_or_Rethrow(ex_obj=%p), " - "private_1=%ld", - exception_object, exception_object->private_1); + "private_1=%" PRIuPTR, + (void *)exception_object, exception_object->private_1); // If this is non-forced and a stopping place was found, then this is a // re-throw. // Call _Unwind_RaiseException() as if this was a new exception. if (exception_object->private_1 == 0) { return _Unwind_SjLj_RaiseException(exception_object); // should return if there is no catch clause, so that __cxa_rethrow can call // std::terminate() } // Call through to _Unwind_Resume() which distiguishes between forced and // regular exceptions. _Unwind_SjLj_Resume(exception_object); _LIBUNWIND_ABORT("__Unwind_SjLj_Resume_or_Rethrow() called " "_Unwind_SjLj_Resume() which unexpectedly returned"); } /// Called by personality handler during phase 2 to get LSDA for current frame. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetLanguageSpecificData(struct _Unwind_Context *context) { _Unwind_FunctionContext_t ufc = (_Unwind_FunctionContext_t) context; _LIBUNWIND_TRACE_API("_Unwind_GetLanguageSpecificData(context=%p) " - "=> 0x%0lX", context, ufc->lsda); + "=> 0x%" PRIuPTR, + (void *)context, ufc->lsda); return ufc->lsda; } /// Called by personality handler during phase 2 to get register values. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetGR(struct _Unwind_Context *context, int index) { - _LIBUNWIND_TRACE_API("_Unwind_GetGR(context=%p, reg=%d)", - context, index); + _LIBUNWIND_TRACE_API("_Unwind_GetGR(context=%p, reg=%d)", (void *)context, + index); _Unwind_FunctionContext_t ufc = (_Unwind_FunctionContext_t) context; return ufc->resumeParameters[index]; } /// Called by personality handler during phase 2 to alter register values. _LIBUNWIND_EXPORT void _Unwind_SetGR(struct _Unwind_Context *context, int index, uintptr_t new_value) { - _LIBUNWIND_TRACE_API("_Unwind_SetGR(context=%p, reg=%d, value=0x%0lX)" - , context, index, new_value); + _LIBUNWIND_TRACE_API("_Unwind_SetGR(context=%p, reg=%d, value=0x%" PRIuPTR + ")", + (void *)context, index, new_value); _Unwind_FunctionContext_t ufc = (_Unwind_FunctionContext_t) context; ufc->resumeParameters[index] = new_value; } /// Called by personality handler during phase 2 to get instruction pointer. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetIP(struct _Unwind_Context *context) { _Unwind_FunctionContext_t ufc = (_Unwind_FunctionContext_t) context; - _LIBUNWIND_TRACE_API("_Unwind_GetIP(context=%p) => 0x%lX", context, - ufc->resumeLocation + 1); + _LIBUNWIND_TRACE_API("_Unwind_GetIP(context=%p) => 0x%" PRIu32, + (void *)context, ufc->resumeLocation + 1); return ufc->resumeLocation + 1; } /// Called by personality handler during phase 2 to get instruction pointer. /// ipBefore is a boolean that says if IP is already adjusted to be the call /// site address. Normally IP is the return address. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetIPInfo(struct _Unwind_Context *context, int *ipBefore) { _Unwind_FunctionContext_t ufc = (_Unwind_FunctionContext_t) context; *ipBefore = 0; - _LIBUNWIND_TRACE_API("_Unwind_GetIPInfo(context=%p, %p) => 0x%lX", - context, ipBefore, ufc->resumeLocation + 1); + _LIBUNWIND_TRACE_API("_Unwind_GetIPInfo(context=%p, %p) => 0x%" PRIu32, + (void *)context, (void *)ipBefore, + ufc->resumeLocation + 1); return ufc->resumeLocation + 1; } /// Called by personality handler during phase 2 to alter instruction pointer. _LIBUNWIND_EXPORT void _Unwind_SetIP(struct _Unwind_Context *context, uintptr_t new_value) { - _LIBUNWIND_TRACE_API("_Unwind_SetIP(context=%p, value=0x%0lX)", - context, new_value); + _LIBUNWIND_TRACE_API("_Unwind_SetIP(context=%p, value=0x%" PRIuPTR ")", + (void *)context, new_value); _Unwind_FunctionContext_t ufc = (_Unwind_FunctionContext_t) context; ufc->resumeLocation = new_value - 1; } /// Called by personality handler during phase 2 to find the start of the /// function. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetRegionStart(struct _Unwind_Context *context) { // Not supported or needed for sjlj based unwinding (void)context; - _LIBUNWIND_TRACE_API("_Unwind_GetRegionStart(context=%p)", context); + _LIBUNWIND_TRACE_API("_Unwind_GetRegionStart(context=%p)", (void *)context); return 0; } /// Called by personality handler during phase 2 if a foreign exception /// is caught. _LIBUNWIND_EXPORT void _Unwind_DeleteException(struct _Unwind_Exception *exception_object) { _LIBUNWIND_TRACE_API("_Unwind_DeleteException(ex_obj=%p)", - exception_object); + (void *)exception_object); if (exception_object->exception_cleanup != NULL) (*exception_object->exception_cleanup)(_URC_FOREIGN_EXCEPTION_CAUGHT, exception_object); } /// Called by personality handler during phase 2 to get base address for data /// relative encodings. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetDataRelBase(struct _Unwind_Context *context) { // Not supported or needed for sjlj based unwinding (void)context; - _LIBUNWIND_TRACE_API("_Unwind_GetDataRelBase(context=%p)", context); + _LIBUNWIND_TRACE_API("_Unwind_GetDataRelBase(context=%p)", (void *)context); _LIBUNWIND_ABORT("_Unwind_GetDataRelBase() not implemented"); } /// Called by personality handler during phase 2 to get base address for text /// relative encodings. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetTextRelBase(struct _Unwind_Context *context) { // Not supported or needed for sjlj based unwinding (void)context; - _LIBUNWIND_TRACE_API("_Unwind_GetTextRelBase(context=%p)", context); + _LIBUNWIND_TRACE_API("_Unwind_GetTextRelBase(context=%p)", (void *)context); _LIBUNWIND_ABORT("_Unwind_GetTextRelBase() not implemented"); } /// Called by personality handler to get "Call Frame Area" for current frame. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetCFA(struct _Unwind_Context *context) { - _LIBUNWIND_TRACE_API("_Unwind_GetCFA(context=%p)", context); + _LIBUNWIND_TRACE_API("_Unwind_GetCFA(context=%p)", (void *)context); if (context != NULL) { _Unwind_FunctionContext_t ufc = (_Unwind_FunctionContext_t) context; // Setjmp/longjmp based exceptions don't have a true CFA. // Instead, the SP in the jmpbuf is the closest approximation. return (uintptr_t) ufc->jbuf[2]; } return 0; } #endif // defined(_LIBUNWIND_BUILD_SJLJ_APIS) Index: projects/clang900-import/contrib/libunwind/src/UnwindCursor.hpp =================================================================== --- projects/clang900-import/contrib/libunwind/src/UnwindCursor.hpp (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/UnwindCursor.hpp (revision 351404) @@ -1,1981 +1,2012 @@ //===------------------------- UnwindCursor.hpp ---------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // C++ interface to lower levels of libunwind //===----------------------------------------------------------------------===// #ifndef __UNWINDCURSOR_HPP__ #define __UNWINDCURSOR_HPP__ -#include #include #include #include #include #ifdef _WIN32 #include #include #endif #ifdef __APPLE__ #include #endif #if defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) // Provide a definition for the DISPATCHER_CONTEXT struct for old (Win7 and // earlier) SDKs. // MinGW-w64 has always provided this struct. #if defined(_WIN32) && defined(_LIBUNWIND_TARGET_X86_64) && \ !defined(__MINGW32__) && VER_PRODUCTBUILD < 8000 struct _DISPATCHER_CONTEXT { ULONG64 ControlPc; ULONG64 ImageBase; PRUNTIME_FUNCTION FunctionEntry; ULONG64 EstablisherFrame; ULONG64 TargetIp; PCONTEXT ContextRecord; PEXCEPTION_ROUTINE LanguageHandler; PVOID HandlerData; PUNWIND_HISTORY_TABLE HistoryTable; ULONG ScopeIndex; ULONG Fill0; }; #endif struct UNWIND_INFO { uint8_t Version : 3; uint8_t Flags : 5; uint8_t SizeOfProlog; uint8_t CountOfCodes; uint8_t FrameRegister : 4; uint8_t FrameOffset : 4; uint16_t UnwindCodes[2]; }; extern "C" _Unwind_Reason_Code __libunwind_seh_personality( int, _Unwind_Action, uint64_t, _Unwind_Exception *, struct _Unwind_Context *); #endif #include "config.h" #include "AddressSpace.hpp" #include "CompactUnwinder.hpp" #include "config.h" #include "DwarfInstructions.hpp" #include "EHHeaderParser.hpp" #include "libunwind.h" #include "Registers.hpp" #include "RWMutex.hpp" #include "Unwind-EHABI.h" namespace libunwind { #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) /// Cache of recently found FDEs. template class _LIBUNWIND_HIDDEN DwarfFDECache { typedef typename A::pint_t pint_t; public: static pint_t findFDE(pint_t mh, pint_t pc); static void add(pint_t mh, pint_t ip_start, pint_t ip_end, pint_t fde); static void removeAllIn(pint_t mh); static void iterateCacheEntries(void (*func)(unw_word_t ip_start, unw_word_t ip_end, unw_word_t fde, unw_word_t mh)); private: struct entry { pint_t mh; pint_t ip_start; pint_t ip_end; pint_t fde; }; // These fields are all static to avoid needing an initializer. // There is only one instance of this class per process. static RWMutex _lock; #ifdef __APPLE__ static void dyldUnloadHook(const struct mach_header *mh, intptr_t slide); static bool _registeredForDyldUnloads; #endif - // Can't use std::vector<> here because this code is below libc++. static entry *_buffer; static entry *_bufferUsed; static entry *_bufferEnd; static entry _initialBuffer[64]; }; template typename DwarfFDECache::entry * DwarfFDECache::_buffer = _initialBuffer; template typename DwarfFDECache::entry * DwarfFDECache::_bufferUsed = _initialBuffer; template typename DwarfFDECache::entry * DwarfFDECache::_bufferEnd = &_initialBuffer[64]; template typename DwarfFDECache::entry DwarfFDECache::_initialBuffer[64]; template RWMutex DwarfFDECache::_lock; #ifdef __APPLE__ template bool DwarfFDECache::_registeredForDyldUnloads = false; #endif template typename A::pint_t DwarfFDECache::findFDE(pint_t mh, pint_t pc) { pint_t result = 0; _LIBUNWIND_LOG_IF_FALSE(_lock.lock_shared()); for (entry *p = _buffer; p < _bufferUsed; ++p) { if ((mh == p->mh) || (mh == 0)) { if ((p->ip_start <= pc) && (pc < p->ip_end)) { result = p->fde; break; } } } _LIBUNWIND_LOG_IF_FALSE(_lock.unlock_shared()); return result; } template void DwarfFDECache::add(pint_t mh, pint_t ip_start, pint_t ip_end, pint_t fde) { #if !defined(_LIBUNWIND_NO_HEAP) _LIBUNWIND_LOG_IF_FALSE(_lock.lock()); if (_bufferUsed >= _bufferEnd) { size_t oldSize = (size_t)(_bufferEnd - _buffer); size_t newSize = oldSize * 4; // Can't use operator new (we are below it). entry *newBuffer = (entry *)malloc(newSize * sizeof(entry)); memcpy(newBuffer, _buffer, oldSize * sizeof(entry)); if (_buffer != _initialBuffer) free(_buffer); _buffer = newBuffer; _bufferUsed = &newBuffer[oldSize]; _bufferEnd = &newBuffer[newSize]; } _bufferUsed->mh = mh; _bufferUsed->ip_start = ip_start; _bufferUsed->ip_end = ip_end; _bufferUsed->fde = fde; ++_bufferUsed; #ifdef __APPLE__ if (!_registeredForDyldUnloads) { _dyld_register_func_for_remove_image(&dyldUnloadHook); _registeredForDyldUnloads = true; } #endif _LIBUNWIND_LOG_IF_FALSE(_lock.unlock()); #endif } template void DwarfFDECache::removeAllIn(pint_t mh) { _LIBUNWIND_LOG_IF_FALSE(_lock.lock()); entry *d = _buffer; for (const entry *s = _buffer; s < _bufferUsed; ++s) { if (s->mh != mh) { if (d != s) *d = *s; ++d; } } _bufferUsed = d; _LIBUNWIND_LOG_IF_FALSE(_lock.unlock()); } #ifdef __APPLE__ template void DwarfFDECache::dyldUnloadHook(const struct mach_header *mh, intptr_t ) { removeAllIn((pint_t) mh); } #endif template void DwarfFDECache::iterateCacheEntries(void (*func)( unw_word_t ip_start, unw_word_t ip_end, unw_word_t fde, unw_word_t mh)) { _LIBUNWIND_LOG_IF_FALSE(_lock.lock()); for (entry *p = _buffer; p < _bufferUsed; ++p) { (*func)(p->ip_start, p->ip_end, p->fde, p->mh); } _LIBUNWIND_LOG_IF_FALSE(_lock.unlock()); } #endif // defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) #define arrayoffsetof(type, index, field) ((size_t)(&((type *)0)[index].field)) #if defined(_LIBUNWIND_SUPPORT_COMPACT_UNWIND) template class UnwindSectionHeader { public: UnwindSectionHeader(A &addressSpace, typename A::pint_t addr) : _addressSpace(addressSpace), _addr(addr) {} uint32_t version() const { return _addressSpace.get32(_addr + offsetof(unwind_info_section_header, version)); } uint32_t commonEncodingsArraySectionOffset() const { return _addressSpace.get32(_addr + offsetof(unwind_info_section_header, commonEncodingsArraySectionOffset)); } uint32_t commonEncodingsArrayCount() const { return _addressSpace.get32(_addr + offsetof(unwind_info_section_header, commonEncodingsArrayCount)); } uint32_t personalityArraySectionOffset() const { return _addressSpace.get32(_addr + offsetof(unwind_info_section_header, personalityArraySectionOffset)); } uint32_t personalityArrayCount() const { return _addressSpace.get32( _addr + offsetof(unwind_info_section_header, personalityArrayCount)); } uint32_t indexSectionOffset() const { return _addressSpace.get32( _addr + offsetof(unwind_info_section_header, indexSectionOffset)); } uint32_t indexCount() const { return _addressSpace.get32( _addr + offsetof(unwind_info_section_header, indexCount)); } private: A &_addressSpace; typename A::pint_t _addr; }; template class UnwindSectionIndexArray { public: UnwindSectionIndexArray(A &addressSpace, typename A::pint_t addr) : _addressSpace(addressSpace), _addr(addr) {} uint32_t functionOffset(uint32_t index) const { return _addressSpace.get32( _addr + arrayoffsetof(unwind_info_section_header_index_entry, index, functionOffset)); } uint32_t secondLevelPagesSectionOffset(uint32_t index) const { return _addressSpace.get32( _addr + arrayoffsetof(unwind_info_section_header_index_entry, index, secondLevelPagesSectionOffset)); } uint32_t lsdaIndexArraySectionOffset(uint32_t index) const { return _addressSpace.get32( _addr + arrayoffsetof(unwind_info_section_header_index_entry, index, lsdaIndexArraySectionOffset)); } private: A &_addressSpace; typename A::pint_t _addr; }; template class UnwindSectionRegularPageHeader { public: UnwindSectionRegularPageHeader(A &addressSpace, typename A::pint_t addr) : _addressSpace(addressSpace), _addr(addr) {} uint32_t kind() const { return _addressSpace.get32( _addr + offsetof(unwind_info_regular_second_level_page_header, kind)); } uint16_t entryPageOffset() const { return _addressSpace.get16( _addr + offsetof(unwind_info_regular_second_level_page_header, entryPageOffset)); } uint16_t entryCount() const { return _addressSpace.get16( _addr + offsetof(unwind_info_regular_second_level_page_header, entryCount)); } private: A &_addressSpace; typename A::pint_t _addr; }; template class UnwindSectionRegularArray { public: UnwindSectionRegularArray(A &addressSpace, typename A::pint_t addr) : _addressSpace(addressSpace), _addr(addr) {} uint32_t functionOffset(uint32_t index) const { return _addressSpace.get32( _addr + arrayoffsetof(unwind_info_regular_second_level_entry, index, functionOffset)); } uint32_t encoding(uint32_t index) const { return _addressSpace.get32( _addr + arrayoffsetof(unwind_info_regular_second_level_entry, index, encoding)); } private: A &_addressSpace; typename A::pint_t _addr; }; template class UnwindSectionCompressedPageHeader { public: UnwindSectionCompressedPageHeader(A &addressSpace, typename A::pint_t addr) : _addressSpace(addressSpace), _addr(addr) {} uint32_t kind() const { return _addressSpace.get32( _addr + offsetof(unwind_info_compressed_second_level_page_header, kind)); } uint16_t entryPageOffset() const { return _addressSpace.get16( _addr + offsetof(unwind_info_compressed_second_level_page_header, entryPageOffset)); } uint16_t entryCount() const { return _addressSpace.get16( _addr + offsetof(unwind_info_compressed_second_level_page_header, entryCount)); } uint16_t encodingsPageOffset() const { return _addressSpace.get16( _addr + offsetof(unwind_info_compressed_second_level_page_header, encodingsPageOffset)); } uint16_t encodingsCount() const { return _addressSpace.get16( _addr + offsetof(unwind_info_compressed_second_level_page_header, encodingsCount)); } private: A &_addressSpace; typename A::pint_t _addr; }; template class UnwindSectionCompressedArray { public: UnwindSectionCompressedArray(A &addressSpace, typename A::pint_t addr) : _addressSpace(addressSpace), _addr(addr) {} uint32_t functionOffset(uint32_t index) const { return UNWIND_INFO_COMPRESSED_ENTRY_FUNC_OFFSET( _addressSpace.get32(_addr + index * sizeof(uint32_t))); } uint16_t encodingIndex(uint32_t index) const { return UNWIND_INFO_COMPRESSED_ENTRY_ENCODING_INDEX( _addressSpace.get32(_addr + index * sizeof(uint32_t))); } private: A &_addressSpace; typename A::pint_t _addr; }; template class UnwindSectionLsdaArray { public: UnwindSectionLsdaArray(A &addressSpace, typename A::pint_t addr) : _addressSpace(addressSpace), _addr(addr) {} uint32_t functionOffset(uint32_t index) const { return _addressSpace.get32( _addr + arrayoffsetof(unwind_info_section_header_lsda_index_entry, index, functionOffset)); } uint32_t lsdaOffset(uint32_t index) const { return _addressSpace.get32( _addr + arrayoffsetof(unwind_info_section_header_lsda_index_entry, index, lsdaOffset)); } private: A &_addressSpace; typename A::pint_t _addr; }; #endif // defined(_LIBUNWIND_SUPPORT_COMPACT_UNWIND) class _LIBUNWIND_HIDDEN AbstractUnwindCursor { public: // NOTE: provide a class specific placement deallocation function (S5.3.4 p20) // This avoids an unnecessary dependency to libc++abi. void operator delete(void *, size_t) {} virtual ~AbstractUnwindCursor() {} virtual bool validReg(int) { _LIBUNWIND_ABORT("validReg not implemented"); } virtual unw_word_t getReg(int) { _LIBUNWIND_ABORT("getReg not implemented"); } virtual void setReg(int, unw_word_t) { _LIBUNWIND_ABORT("setReg not implemented"); } virtual bool validFloatReg(int) { _LIBUNWIND_ABORT("validFloatReg not implemented"); } virtual unw_fpreg_t getFloatReg(int) { _LIBUNWIND_ABORT("getFloatReg not implemented"); } virtual void setFloatReg(int, unw_fpreg_t) { _LIBUNWIND_ABORT("setFloatReg not implemented"); } virtual int step() { _LIBUNWIND_ABORT("step not implemented"); } virtual void getInfo(unw_proc_info_t *) { _LIBUNWIND_ABORT("getInfo not implemented"); } virtual void jumpto() { _LIBUNWIND_ABORT("jumpto not implemented"); } virtual bool isSignalFrame() { _LIBUNWIND_ABORT("isSignalFrame not implemented"); } virtual bool getFunctionName(char *, size_t, unw_word_t *) { _LIBUNWIND_ABORT("getFunctionName not implemented"); } virtual void setInfoBasedOnIPRegister(bool = false) { _LIBUNWIND_ABORT("setInfoBasedOnIPRegister not implemented"); } virtual const char *getRegisterName(int) { _LIBUNWIND_ABORT("getRegisterName not implemented"); } #ifdef __arm__ virtual void saveVFPAsX() { _LIBUNWIND_ABORT("saveVFPAsX not implemented"); } #endif }; #if defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) && defined(_WIN32) /// \c UnwindCursor contains all state (including all register values) during /// an unwind. This is normally stack-allocated inside a unw_cursor_t. template class UnwindCursor : public AbstractUnwindCursor { typedef typename A::pint_t pint_t; public: UnwindCursor(unw_context_t *context, A &as); UnwindCursor(CONTEXT *context, A &as); UnwindCursor(A &as, void *threadArg); virtual ~UnwindCursor() {} virtual bool validReg(int); virtual unw_word_t getReg(int); virtual void setReg(int, unw_word_t); virtual bool validFloatReg(int); virtual unw_fpreg_t getFloatReg(int); virtual void setFloatReg(int, unw_fpreg_t); virtual int step(); virtual void getInfo(unw_proc_info_t *); virtual void jumpto(); virtual bool isSignalFrame(); virtual bool getFunctionName(char *buf, size_t len, unw_word_t *off); virtual void setInfoBasedOnIPRegister(bool isReturnAddress = false); virtual const char *getRegisterName(int num); #ifdef __arm__ virtual void saveVFPAsX(); #endif DISPATCHER_CONTEXT *getDispatcherContext() { return &_dispContext; } void setDispatcherContext(DISPATCHER_CONTEXT *disp) { _dispContext = *disp; } + // libunwind does not and should not depend on C++ library which means that we + // need our own defition of inline placement new. + static void *operator new(size_t, UnwindCursor *p) { return p; } + private: pint_t getLastPC() const { return _dispContext.ControlPc; } void setLastPC(pint_t pc) { _dispContext.ControlPc = pc; } RUNTIME_FUNCTION *lookUpSEHUnwindInfo(pint_t pc, pint_t *base) { _dispContext.FunctionEntry = RtlLookupFunctionEntry(pc, &_dispContext.ImageBase, _dispContext.HistoryTable); *base = _dispContext.ImageBase; return _dispContext.FunctionEntry; } bool getInfoFromSEH(pint_t pc); int stepWithSEHData() { _dispContext.LanguageHandler = RtlVirtualUnwind(UNW_FLAG_UHANDLER, _dispContext.ImageBase, _dispContext.ControlPc, _dispContext.FunctionEntry, _dispContext.ContextRecord, &_dispContext.HandlerData, &_dispContext.EstablisherFrame, NULL); // Update some fields of the unwind info now, since we have them. _info.lsda = reinterpret_cast(_dispContext.HandlerData); if (_dispContext.LanguageHandler) { _info.handler = reinterpret_cast(__libunwind_seh_personality); } else _info.handler = 0; return UNW_STEP_SUCCESS; } A &_addressSpace; unw_proc_info_t _info; DISPATCHER_CONTEXT _dispContext; CONTEXT _msContext; UNWIND_HISTORY_TABLE _histTable; bool _unwindInfoMissing; }; template UnwindCursor::UnwindCursor(unw_context_t *context, A &as) : _addressSpace(as), _unwindInfoMissing(false) { static_assert((check_fit, unw_cursor_t>::does_fit), "UnwindCursor<> does not fit in unw_cursor_t"); memset(&_info, 0, sizeof(_info)); memset(&_histTable, 0, sizeof(_histTable)); _dispContext.ContextRecord = &_msContext; _dispContext.HistoryTable = &_histTable; // Initialize MS context from ours. R r(context); _msContext.ContextFlags = CONTEXT_CONTROL|CONTEXT_INTEGER|CONTEXT_FLOATING_POINT; #if defined(_LIBUNWIND_TARGET_X86_64) _msContext.Rax = r.getRegister(UNW_X86_64_RAX); _msContext.Rcx = r.getRegister(UNW_X86_64_RCX); _msContext.Rdx = r.getRegister(UNW_X86_64_RDX); _msContext.Rbx = r.getRegister(UNW_X86_64_RBX); _msContext.Rsp = r.getRegister(UNW_X86_64_RSP); _msContext.Rbp = r.getRegister(UNW_X86_64_RBP); _msContext.Rsi = r.getRegister(UNW_X86_64_RSI); _msContext.Rdi = r.getRegister(UNW_X86_64_RDI); _msContext.R8 = r.getRegister(UNW_X86_64_R8); _msContext.R9 = r.getRegister(UNW_X86_64_R9); _msContext.R10 = r.getRegister(UNW_X86_64_R10); _msContext.R11 = r.getRegister(UNW_X86_64_R11); _msContext.R12 = r.getRegister(UNW_X86_64_R12); _msContext.R13 = r.getRegister(UNW_X86_64_R13); _msContext.R14 = r.getRegister(UNW_X86_64_R14); _msContext.R15 = r.getRegister(UNW_X86_64_R15); _msContext.Rip = r.getRegister(UNW_REG_IP); union { v128 v; M128A m; } t; t.v = r.getVectorRegister(UNW_X86_64_XMM0); _msContext.Xmm0 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM1); _msContext.Xmm1 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM2); _msContext.Xmm2 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM3); _msContext.Xmm3 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM4); _msContext.Xmm4 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM5); _msContext.Xmm5 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM6); _msContext.Xmm6 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM7); _msContext.Xmm7 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM8); _msContext.Xmm8 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM9); _msContext.Xmm9 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM10); _msContext.Xmm10 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM11); _msContext.Xmm11 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM12); _msContext.Xmm12 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM13); _msContext.Xmm13 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM14); _msContext.Xmm14 = t.m; t.v = r.getVectorRegister(UNW_X86_64_XMM15); _msContext.Xmm15 = t.m; #elif defined(_LIBUNWIND_TARGET_ARM) _msContext.R0 = r.getRegister(UNW_ARM_R0); _msContext.R1 = r.getRegister(UNW_ARM_R1); _msContext.R2 = r.getRegister(UNW_ARM_R2); _msContext.R3 = r.getRegister(UNW_ARM_R3); _msContext.R4 = r.getRegister(UNW_ARM_R4); _msContext.R5 = r.getRegister(UNW_ARM_R5); _msContext.R6 = r.getRegister(UNW_ARM_R6); _msContext.R7 = r.getRegister(UNW_ARM_R7); _msContext.R8 = r.getRegister(UNW_ARM_R8); _msContext.R9 = r.getRegister(UNW_ARM_R9); _msContext.R10 = r.getRegister(UNW_ARM_R10); _msContext.R11 = r.getRegister(UNW_ARM_R11); _msContext.R12 = r.getRegister(UNW_ARM_R12); _msContext.Sp = r.getRegister(UNW_ARM_SP); _msContext.Lr = r.getRegister(UNW_ARM_LR); _msContext.Pc = r.getRegister(UNW_ARM_IP); for (int i = UNW_ARM_D0; i <= UNW_ARM_D31; ++i) { union { uint64_t w; double d; } d; d.d = r.getFloatRegister(i); _msContext.D[i - UNW_ARM_D0] = d.w; } #elif defined(_LIBUNWIND_TARGET_AARCH64) for (int i = UNW_ARM64_X0; i <= UNW_ARM64_X30; ++i) _msContext.X[i - UNW_ARM64_X0] = r.getRegister(i); _msContext.Sp = r.getRegister(UNW_REG_SP); _msContext.Pc = r.getRegister(UNW_REG_IP); for (int i = UNW_ARM64_D0; i <= UNW_ARM64_D31; ++i) _msContext.V[i - UNW_ARM64_D0].D[0] = r.getFloatRegister(i); #endif } template UnwindCursor::UnwindCursor(CONTEXT *context, A &as) : _addressSpace(as), _unwindInfoMissing(false) { static_assert((check_fit, unw_cursor_t>::does_fit), "UnwindCursor<> does not fit in unw_cursor_t"); memset(&_info, 0, sizeof(_info)); memset(&_histTable, 0, sizeof(_histTable)); _dispContext.ContextRecord = &_msContext; _dispContext.HistoryTable = &_histTable; _msContext = *context; } template bool UnwindCursor::validReg(int regNum) { if (regNum == UNW_REG_IP || regNum == UNW_REG_SP) return true; #if defined(_LIBUNWIND_TARGET_X86_64) if (regNum >= UNW_X86_64_RAX && regNum <= UNW_X86_64_R15) return true; #elif defined(_LIBUNWIND_TARGET_ARM) if (regNum >= UNW_ARM_R0 && regNum <= UNW_ARM_R15) return true; #elif defined(_LIBUNWIND_TARGET_AARCH64) if (regNum >= UNW_ARM64_X0 && regNum <= UNW_ARM64_X30) return true; #endif return false; } template unw_word_t UnwindCursor::getReg(int regNum) { switch (regNum) { #if defined(_LIBUNWIND_TARGET_X86_64) case UNW_REG_IP: return _msContext.Rip; case UNW_X86_64_RAX: return _msContext.Rax; case UNW_X86_64_RDX: return _msContext.Rdx; case UNW_X86_64_RCX: return _msContext.Rcx; case UNW_X86_64_RBX: return _msContext.Rbx; case UNW_REG_SP: case UNW_X86_64_RSP: return _msContext.Rsp; case UNW_X86_64_RBP: return _msContext.Rbp; case UNW_X86_64_RSI: return _msContext.Rsi; case UNW_X86_64_RDI: return _msContext.Rdi; case UNW_X86_64_R8: return _msContext.R8; case UNW_X86_64_R9: return _msContext.R9; case UNW_X86_64_R10: return _msContext.R10; case UNW_X86_64_R11: return _msContext.R11; case UNW_X86_64_R12: return _msContext.R12; case UNW_X86_64_R13: return _msContext.R13; case UNW_X86_64_R14: return _msContext.R14; case UNW_X86_64_R15: return _msContext.R15; #elif defined(_LIBUNWIND_TARGET_ARM) case UNW_ARM_R0: return _msContext.R0; case UNW_ARM_R1: return _msContext.R1; case UNW_ARM_R2: return _msContext.R2; case UNW_ARM_R3: return _msContext.R3; case UNW_ARM_R4: return _msContext.R4; case UNW_ARM_R5: return _msContext.R5; case UNW_ARM_R6: return _msContext.R6; case UNW_ARM_R7: return _msContext.R7; case UNW_ARM_R8: return _msContext.R8; case UNW_ARM_R9: return _msContext.R9; case UNW_ARM_R10: return _msContext.R10; case UNW_ARM_R11: return _msContext.R11; case UNW_ARM_R12: return _msContext.R12; case UNW_REG_SP: case UNW_ARM_SP: return _msContext.Sp; case UNW_ARM_LR: return _msContext.Lr; case UNW_REG_IP: case UNW_ARM_IP: return _msContext.Pc; #elif defined(_LIBUNWIND_TARGET_AARCH64) case UNW_REG_SP: return _msContext.Sp; case UNW_REG_IP: return _msContext.Pc; default: return _msContext.X[regNum - UNW_ARM64_X0]; #endif } _LIBUNWIND_ABORT("unsupported register"); } template void UnwindCursor::setReg(int regNum, unw_word_t value) { switch (regNum) { #if defined(_LIBUNWIND_TARGET_X86_64) case UNW_REG_IP: _msContext.Rip = value; break; case UNW_X86_64_RAX: _msContext.Rax = value; break; case UNW_X86_64_RDX: _msContext.Rdx = value; break; case UNW_X86_64_RCX: _msContext.Rcx = value; break; case UNW_X86_64_RBX: _msContext.Rbx = value; break; case UNW_REG_SP: case UNW_X86_64_RSP: _msContext.Rsp = value; break; case UNW_X86_64_RBP: _msContext.Rbp = value; break; case UNW_X86_64_RSI: _msContext.Rsi = value; break; case UNW_X86_64_RDI: _msContext.Rdi = value; break; case UNW_X86_64_R8: _msContext.R8 = value; break; case UNW_X86_64_R9: _msContext.R9 = value; break; case UNW_X86_64_R10: _msContext.R10 = value; break; case UNW_X86_64_R11: _msContext.R11 = value; break; case UNW_X86_64_R12: _msContext.R12 = value; break; case UNW_X86_64_R13: _msContext.R13 = value; break; case UNW_X86_64_R14: _msContext.R14 = value; break; case UNW_X86_64_R15: _msContext.R15 = value; break; #elif defined(_LIBUNWIND_TARGET_ARM) case UNW_ARM_R0: _msContext.R0 = value; break; case UNW_ARM_R1: _msContext.R1 = value; break; case UNW_ARM_R2: _msContext.R2 = value; break; case UNW_ARM_R3: _msContext.R3 = value; break; case UNW_ARM_R4: _msContext.R4 = value; break; case UNW_ARM_R5: _msContext.R5 = value; break; case UNW_ARM_R6: _msContext.R6 = value; break; case UNW_ARM_R7: _msContext.R7 = value; break; case UNW_ARM_R8: _msContext.R8 = value; break; case UNW_ARM_R9: _msContext.R9 = value; break; case UNW_ARM_R10: _msContext.R10 = value; break; case UNW_ARM_R11: _msContext.R11 = value; break; case UNW_ARM_R12: _msContext.R12 = value; break; case UNW_REG_SP: case UNW_ARM_SP: _msContext.Sp = value; break; case UNW_ARM_LR: _msContext.Lr = value; break; case UNW_REG_IP: case UNW_ARM_IP: _msContext.Pc = value; break; #elif defined(_LIBUNWIND_TARGET_AARCH64) case UNW_REG_SP: _msContext.Sp = value; break; case UNW_REG_IP: _msContext.Pc = value; break; case UNW_ARM64_X0: case UNW_ARM64_X1: case UNW_ARM64_X2: case UNW_ARM64_X3: case UNW_ARM64_X4: case UNW_ARM64_X5: case UNW_ARM64_X6: case UNW_ARM64_X7: case UNW_ARM64_X8: case UNW_ARM64_X9: case UNW_ARM64_X10: case UNW_ARM64_X11: case UNW_ARM64_X12: case UNW_ARM64_X13: case UNW_ARM64_X14: case UNW_ARM64_X15: case UNW_ARM64_X16: case UNW_ARM64_X17: case UNW_ARM64_X18: case UNW_ARM64_X19: case UNW_ARM64_X20: case UNW_ARM64_X21: case UNW_ARM64_X22: case UNW_ARM64_X23: case UNW_ARM64_X24: case UNW_ARM64_X25: case UNW_ARM64_X26: case UNW_ARM64_X27: case UNW_ARM64_X28: case UNW_ARM64_FP: case UNW_ARM64_LR: _msContext.X[regNum - UNW_ARM64_X0] = value; break; #endif default: _LIBUNWIND_ABORT("unsupported register"); } } template bool UnwindCursor::validFloatReg(int regNum) { #if defined(_LIBUNWIND_TARGET_ARM) if (regNum >= UNW_ARM_S0 && regNum <= UNW_ARM_S31) return true; if (regNum >= UNW_ARM_D0 && regNum <= UNW_ARM_D31) return true; #elif defined(_LIBUNWIND_TARGET_AARCH64) if (regNum >= UNW_ARM64_D0 && regNum <= UNW_ARM64_D31) return true; +#else + (void)regNum; #endif return false; } template unw_fpreg_t UnwindCursor::getFloatReg(int regNum) { #if defined(_LIBUNWIND_TARGET_ARM) if (regNum >= UNW_ARM_S0 && regNum <= UNW_ARM_S31) { union { uint32_t w; float f; } d; d.w = _msContext.S[regNum - UNW_ARM_S0]; return d.f; } if (regNum >= UNW_ARM_D0 && regNum <= UNW_ARM_D31) { union { uint64_t w; double d; } d; d.w = _msContext.D[regNum - UNW_ARM_D0]; return d.d; } _LIBUNWIND_ABORT("unsupported float register"); #elif defined(_LIBUNWIND_TARGET_AARCH64) return _msContext.V[regNum - UNW_ARM64_D0].D[0]; #else + (void)regNum; _LIBUNWIND_ABORT("float registers unimplemented"); #endif } template void UnwindCursor::setFloatReg(int regNum, unw_fpreg_t value) { #if defined(_LIBUNWIND_TARGET_ARM) if (regNum >= UNW_ARM_S0 && regNum <= UNW_ARM_S31) { union { uint32_t w; float f; } d; d.f = value; _msContext.S[regNum - UNW_ARM_S0] = d.w; } if (regNum >= UNW_ARM_D0 && regNum <= UNW_ARM_D31) { union { uint64_t w; double d; } d; d.d = value; _msContext.D[regNum - UNW_ARM_D0] = d.w; } _LIBUNWIND_ABORT("unsupported float register"); #elif defined(_LIBUNWIND_TARGET_AARCH64) _msContext.V[regNum - UNW_ARM64_D0].D[0] = value; #else + (void)regNum; + (void)value; _LIBUNWIND_ABORT("float registers unimplemented"); #endif } template void UnwindCursor::jumpto() { RtlRestoreContext(&_msContext, nullptr); } #ifdef __arm__ template void UnwindCursor::saveVFPAsX() {} #endif template const char *UnwindCursor::getRegisterName(int regNum) { return R::getRegisterName(regNum); } template bool UnwindCursor::isSignalFrame() { return false; } #else // !defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) || !defined(_WIN32) /// UnwindCursor contains all state (including all register values) during /// an unwind. This is normally stack allocated inside a unw_cursor_t. template class UnwindCursor : public AbstractUnwindCursor{ typedef typename A::pint_t pint_t; public: UnwindCursor(unw_context_t *context, A &as); UnwindCursor(A &as, void *threadArg); virtual ~UnwindCursor() {} virtual bool validReg(int); virtual unw_word_t getReg(int); virtual void setReg(int, unw_word_t); virtual bool validFloatReg(int); virtual unw_fpreg_t getFloatReg(int); virtual void setFloatReg(int, unw_fpreg_t); virtual int step(); virtual void getInfo(unw_proc_info_t *); virtual void jumpto(); virtual bool isSignalFrame(); virtual bool getFunctionName(char *buf, size_t len, unw_word_t *off); virtual void setInfoBasedOnIPRegister(bool isReturnAddress = false); virtual const char *getRegisterName(int num); #ifdef __arm__ virtual void saveVFPAsX(); #endif + // libunwind does not and should not depend on C++ library which means that we + // need our own defition of inline placement new. + static void *operator new(size_t, UnwindCursor *p) { return p; } + private: #if defined(_LIBUNWIND_ARM_EHABI) bool getInfoFromEHABISection(pint_t pc, const UnwindInfoSections §s); int stepWithEHABI() { size_t len = 0; size_t off = 0; // FIXME: Calling decode_eht_entry() here is violating the libunwind // abstraction layer. const uint32_t *ehtp = decode_eht_entry(reinterpret_cast(_info.unwind_info), &off, &len); if (_Unwind_VRS_Interpret((_Unwind_Context *)this, ehtp, off, len) != _URC_CONTINUE_UNWIND) return UNW_STEP_END; return UNW_STEP_SUCCESS; } #endif #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) bool getInfoFromDwarfSection(pint_t pc, const UnwindInfoSections §s, uint32_t fdeSectionOffsetHint=0); int stepWithDwarfFDE() { return DwarfInstructions::stepWithDwarf(_addressSpace, (pint_t)this->getReg(UNW_REG_IP), (pint_t)_info.unwind_info, _registers); } #endif #if defined(_LIBUNWIND_SUPPORT_COMPACT_UNWIND) bool getInfoFromCompactEncodingSection(pint_t pc, const UnwindInfoSections §s); int stepWithCompactEncoding() { #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) if ( compactSaysUseDwarf() ) return stepWithDwarfFDE(); #endif R dummy; return stepWithCompactEncoding(dummy); } #if defined(_LIBUNWIND_TARGET_X86_64) int stepWithCompactEncoding(Registers_x86_64 &) { return CompactUnwinder_x86_64::stepWithCompactEncoding( _info.format, _info.start_ip, _addressSpace, _registers); } #endif #if defined(_LIBUNWIND_TARGET_I386) int stepWithCompactEncoding(Registers_x86 &) { return CompactUnwinder_x86::stepWithCompactEncoding( _info.format, (uint32_t)_info.start_ip, _addressSpace, _registers); } #endif #if defined(_LIBUNWIND_TARGET_PPC) int stepWithCompactEncoding(Registers_ppc &) { return UNW_EINVAL; } #endif #if defined(_LIBUNWIND_TARGET_PPC64) int stepWithCompactEncoding(Registers_ppc64 &) { return UNW_EINVAL; } #endif #if defined(_LIBUNWIND_TARGET_AARCH64) int stepWithCompactEncoding(Registers_arm64 &) { return CompactUnwinder_arm64::stepWithCompactEncoding( _info.format, _info.start_ip, _addressSpace, _registers); } #endif #if defined(_LIBUNWIND_TARGET_MIPS_O32) int stepWithCompactEncoding(Registers_mips_o32 &) { return UNW_EINVAL; } #endif #if defined(_LIBUNWIND_TARGET_MIPS_NEWABI) int stepWithCompactEncoding(Registers_mips_newabi &) { return UNW_EINVAL; } #endif #if defined(_LIBUNWIND_TARGET_SPARC) int stepWithCompactEncoding(Registers_sparc &) { return UNW_EINVAL; } #endif bool compactSaysUseDwarf(uint32_t *offset=NULL) const { R dummy; return compactSaysUseDwarf(dummy, offset); } #if defined(_LIBUNWIND_TARGET_X86_64) bool compactSaysUseDwarf(Registers_x86_64 &, uint32_t *offset) const { if ((_info.format & UNWIND_X86_64_MODE_MASK) == UNWIND_X86_64_MODE_DWARF) { if (offset) *offset = (_info.format & UNWIND_X86_64_DWARF_SECTION_OFFSET); return true; } return false; } #endif #if defined(_LIBUNWIND_TARGET_I386) bool compactSaysUseDwarf(Registers_x86 &, uint32_t *offset) const { if ((_info.format & UNWIND_X86_MODE_MASK) == UNWIND_X86_MODE_DWARF) { if (offset) *offset = (_info.format & UNWIND_X86_DWARF_SECTION_OFFSET); return true; } return false; } #endif #if defined(_LIBUNWIND_TARGET_PPC) bool compactSaysUseDwarf(Registers_ppc &, uint32_t *) const { return true; } #endif #if defined(_LIBUNWIND_TARGET_PPC64) bool compactSaysUseDwarf(Registers_ppc64 &, uint32_t *) const { return true; } #endif #if defined(_LIBUNWIND_TARGET_AARCH64) bool compactSaysUseDwarf(Registers_arm64 &, uint32_t *offset) const { if ((_info.format & UNWIND_ARM64_MODE_MASK) == UNWIND_ARM64_MODE_DWARF) { if (offset) *offset = (_info.format & UNWIND_ARM64_DWARF_SECTION_OFFSET); return true; } return false; } #endif #if defined(_LIBUNWIND_TARGET_MIPS_O32) bool compactSaysUseDwarf(Registers_mips_o32 &, uint32_t *) const { return true; } #endif #if defined(_LIBUNWIND_TARGET_MIPS_NEWABI) bool compactSaysUseDwarf(Registers_mips_newabi &, uint32_t *) const { return true; } #endif #if defined(_LIBUNWIND_TARGET_SPARC) bool compactSaysUseDwarf(Registers_sparc &, uint32_t *) const { return true; } #endif #endif // defined(_LIBUNWIND_SUPPORT_COMPACT_UNWIND) #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) compact_unwind_encoding_t dwarfEncoding() const { R dummy; return dwarfEncoding(dummy); } #if defined(_LIBUNWIND_TARGET_X86_64) compact_unwind_encoding_t dwarfEncoding(Registers_x86_64 &) const { return UNWIND_X86_64_MODE_DWARF; } #endif #if defined(_LIBUNWIND_TARGET_I386) compact_unwind_encoding_t dwarfEncoding(Registers_x86 &) const { return UNWIND_X86_MODE_DWARF; } #endif #if defined(_LIBUNWIND_TARGET_PPC) compact_unwind_encoding_t dwarfEncoding(Registers_ppc &) const { return 0; } #endif #if defined(_LIBUNWIND_TARGET_PPC64) compact_unwind_encoding_t dwarfEncoding(Registers_ppc64 &) const { return 0; } #endif #if defined(_LIBUNWIND_TARGET_AARCH64) compact_unwind_encoding_t dwarfEncoding(Registers_arm64 &) const { return UNWIND_ARM64_MODE_DWARF; } #endif #if defined(_LIBUNWIND_TARGET_ARM) compact_unwind_encoding_t dwarfEncoding(Registers_arm &) const { return 0; } #endif #if defined (_LIBUNWIND_TARGET_OR1K) compact_unwind_encoding_t dwarfEncoding(Registers_or1k &) const { return 0; } #endif #if defined (_LIBUNWIND_TARGET_RISCV) compact_unwind_encoding_t dwarfEncoding(Registers_riscv &) const { return 0; } #endif #if defined (_LIBUNWIND_TARGET_MIPS_O32) compact_unwind_encoding_t dwarfEncoding(Registers_mips_o32 &) const { return 0; } #endif #if defined (_LIBUNWIND_TARGET_MIPS_NEWABI) compact_unwind_encoding_t dwarfEncoding(Registers_mips_newabi &) const { return 0; } #endif #if defined(_LIBUNWIND_TARGET_SPARC) compact_unwind_encoding_t dwarfEncoding(Registers_sparc &) const { return 0; } #endif #endif // defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) #if defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) // For runtime environments using SEH unwind data without Windows runtime // support. pint_t getLastPC() const { /* FIXME: Implement */ return 0; } void setLastPC(pint_t pc) { /* FIXME: Implement */ } RUNTIME_FUNCTION *lookUpSEHUnwindInfo(pint_t pc, pint_t *base) { /* FIXME: Implement */ *base = 0; return nullptr; } bool getInfoFromSEH(pint_t pc); int stepWithSEHData() { /* FIXME: Implement */ return 0; } #endif // defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) A &_addressSpace; R _registers; unw_proc_info_t _info; bool _unwindInfoMissing; bool _isSignalFrame; }; template UnwindCursor::UnwindCursor(unw_context_t *context, A &as) : _addressSpace(as), _registers(context), _unwindInfoMissing(false), _isSignalFrame(false) { static_assert((check_fit, unw_cursor_t>::does_fit), "UnwindCursor<> does not fit in unw_cursor_t"); memset(&_info, 0, sizeof(_info)); } template UnwindCursor::UnwindCursor(A &as, void *) : _addressSpace(as), _unwindInfoMissing(false), _isSignalFrame(false) { memset(&_info, 0, sizeof(_info)); // FIXME // fill in _registers from thread arg } template bool UnwindCursor::validReg(int regNum) { return _registers.validRegister(regNum); } template unw_word_t UnwindCursor::getReg(int regNum) { return _registers.getRegister(regNum); } template void UnwindCursor::setReg(int regNum, unw_word_t value) { _registers.setRegister(regNum, (typename A::pint_t)value); } template bool UnwindCursor::validFloatReg(int regNum) { return _registers.validFloatRegister(regNum); } template unw_fpreg_t UnwindCursor::getFloatReg(int regNum) { return _registers.getFloatRegister(regNum); } template void UnwindCursor::setFloatReg(int regNum, unw_fpreg_t value) { _registers.setFloatRegister(regNum, value); } template void UnwindCursor::jumpto() { _registers.jumpto(); } #ifdef __arm__ template void UnwindCursor::saveVFPAsX() { _registers.saveVFPAsX(); } #endif template const char *UnwindCursor::getRegisterName(int regNum) { return _registers.getRegisterName(regNum); } template bool UnwindCursor::isSignalFrame() { return _isSignalFrame; } #endif // defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) #if defined(_LIBUNWIND_ARM_EHABI) struct EHABIIndexEntry { uint32_t functionOffset; uint32_t data; }; template struct EHABISectionIterator { typedef EHABISectionIterator _Self; - typedef std::random_access_iterator_tag iterator_category; typedef typename A::pint_t value_type; typedef typename A::pint_t* pointer; typedef typename A::pint_t& reference; typedef size_t size_type; typedef size_t difference_type; static _Self begin(A& addressSpace, const UnwindInfoSections& sects) { return _Self(addressSpace, sects, 0); } static _Self end(A& addressSpace, const UnwindInfoSections& sects) { return _Self(addressSpace, sects, sects.arm_section_length / sizeof(EHABIIndexEntry)); } EHABISectionIterator(A& addressSpace, const UnwindInfoSections& sects, size_t i) : _i(i), _addressSpace(&addressSpace), _sects(§s) {} _Self& operator++() { ++_i; return *this; } _Self& operator+=(size_t a) { _i += a; return *this; } _Self& operator--() { assert(_i > 0); --_i; return *this; } _Self& operator-=(size_t a) { assert(_i >= a); _i -= a; return *this; } _Self operator+(size_t a) { _Self out = *this; out._i += a; return out; } _Self operator-(size_t a) { assert(_i >= a); _Self out = *this; out._i -= a; return out; } size_t operator-(const _Self& other) { return _i - other._i; } bool operator==(const _Self& other) const { assert(_addressSpace == other._addressSpace); assert(_sects == other._sects); return _i == other._i; } typename A::pint_t operator*() const { return functionAddress(); } typename A::pint_t functionAddress() const { typename A::pint_t indexAddr = _sects->arm_section + arrayoffsetof( EHABIIndexEntry, _i, functionOffset); return indexAddr + signExtendPrel31(_addressSpace->get32(indexAddr)); } typename A::pint_t dataAddress() { typename A::pint_t indexAddr = _sects->arm_section + arrayoffsetof( EHABIIndexEntry, _i, data); return indexAddr; } private: size_t _i; A* _addressSpace; const UnwindInfoSections* _sects; }; +namespace { + +template +EHABISectionIterator EHABISectionUpperBound( + EHABISectionIterator first, + EHABISectionIterator last, + typename A::pint_t value) { + size_t len = last - first; + while (len > 0) { + size_t l2 = len / 2; + EHABISectionIterator m = first + l2; + if (value < *m) { + len = l2; + } else { + first = ++m; + len -= l2 + 1; + } + } + return first; +} + +} + template bool UnwindCursor::getInfoFromEHABISection( pint_t pc, const UnwindInfoSections §s) { EHABISectionIterator begin = EHABISectionIterator::begin(_addressSpace, sects); EHABISectionIterator end = EHABISectionIterator::end(_addressSpace, sects); if (begin == end) return false; - EHABISectionIterator itNextPC = std::upper_bound(begin, end, pc); + EHABISectionIterator itNextPC = EHABISectionUpperBound(begin, end, pc); if (itNextPC == begin) return false; EHABISectionIterator itThisPC = itNextPC - 1; pint_t thisPC = itThisPC.functionAddress(); // If an exception is thrown from a function, corresponding to the last entry // in the table, we don't really know the function extent and have to choose a // value for nextPC. Choosing max() will allow the range check during trace to // succeed. - pint_t nextPC = (itNextPC == end) ? std::numeric_limits::max() - : itNextPC.functionAddress(); + pint_t nextPC = (itNextPC == end) ? UINTPTR_MAX : itNextPC.functionAddress(); pint_t indexDataAddr = itThisPC.dataAddress(); if (indexDataAddr == 0) return false; uint32_t indexData = _addressSpace.get32(indexDataAddr); if (indexData == UNW_EXIDX_CANTUNWIND) return false; // If the high bit is set, the exception handling table entry is inline inside // the index table entry on the second word (aka |indexDataAddr|). Otherwise, // the table points at an offset in the exception handling table (section 5 EHABI). pint_t exceptionTableAddr; uint32_t exceptionTableData; bool isSingleWordEHT; if (indexData & 0x80000000) { exceptionTableAddr = indexDataAddr; // TODO(ajwong): Should this data be 0? exceptionTableData = indexData; isSingleWordEHT = true; } else { exceptionTableAddr = indexDataAddr + signExtendPrel31(indexData); exceptionTableData = _addressSpace.get32(exceptionTableAddr); isSingleWordEHT = false; } // Now we know the 3 things: // exceptionTableAddr -- exception handler table entry. // exceptionTableData -- the data inside the first word of the eht entry. // isSingleWordEHT -- whether the entry is in the index. unw_word_t personalityRoutine = 0xbadf00d; bool scope32 = false; uintptr_t lsda; // If the high bit in the exception handling table entry is set, the entry is // in compact form (section 6.3 EHABI). if (exceptionTableData & 0x80000000) { // Grab the index of the personality routine from the compact form. uint32_t choice = (exceptionTableData & 0x0f000000) >> 24; uint32_t extraWords = 0; switch (choice) { case 0: personalityRoutine = (unw_word_t) &__aeabi_unwind_cpp_pr0; extraWords = 0; scope32 = false; lsda = isSingleWordEHT ? 0 : (exceptionTableAddr + 4); break; case 1: personalityRoutine = (unw_word_t) &__aeabi_unwind_cpp_pr1; extraWords = (exceptionTableData & 0x00ff0000) >> 16; scope32 = false; lsda = exceptionTableAddr + (extraWords + 1) * 4; break; case 2: personalityRoutine = (unw_word_t) &__aeabi_unwind_cpp_pr2; extraWords = (exceptionTableData & 0x00ff0000) >> 16; scope32 = true; lsda = exceptionTableAddr + (extraWords + 1) * 4; break; default: _LIBUNWIND_ABORT("unknown personality routine"); return false; } if (isSingleWordEHT) { if (extraWords != 0) { _LIBUNWIND_ABORT("index inlined table detected but pr function " "requires extra words"); return false; } } } else { pint_t personalityAddr = exceptionTableAddr + signExtendPrel31(exceptionTableData); personalityRoutine = personalityAddr; // ARM EHABI # 6.2, # 9.2 // // +---- ehtp // v // +--------------------------------------+ // | +--------+--------+--------+-------+ | // | |0| prel31 to personalityRoutine | | // | +--------+--------+--------+-------+ | // | | N | unwind opcodes | | <-- UnwindData // | +--------+--------+--------+-------+ | // | | Word 2 unwind opcodes | | // | +--------+--------+--------+-------+ | // | ... | // | +--------+--------+--------+-------+ | // | | Word N unwind opcodes | | // | +--------+--------+--------+-------+ | // | | LSDA | | <-- lsda // | | ... | | // | +--------+--------+--------+-------+ | // +--------------------------------------+ uint32_t *UnwindData = reinterpret_cast(exceptionTableAddr) + 1; uint32_t FirstDataWord = *UnwindData; size_t N = ((FirstDataWord >> 24) & 0xff); size_t NDataWords = N + 1; lsda = reinterpret_cast(UnwindData + NDataWords); } _info.start_ip = thisPC; _info.end_ip = nextPC; _info.handler = personalityRoutine; _info.unwind_info = exceptionTableAddr; _info.lsda = lsda; // flags is pr_cache.additional. See EHABI #7.2 for definition of bit 0. _info.flags = isSingleWordEHT ? 1 : 0 | scope32 ? 0x2 : 0; // Use enum? return true; } #endif #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) template bool UnwindCursor::getInfoFromDwarfSection(pint_t pc, const UnwindInfoSections §s, uint32_t fdeSectionOffsetHint) { typename CFI_Parser::FDE_Info fdeInfo; typename CFI_Parser::CIE_Info cieInfo; bool foundFDE = false; bool foundInCache = false; // If compact encoding table gave offset into dwarf section, go directly there if (fdeSectionOffsetHint != 0) { foundFDE = CFI_Parser::findFDE(_addressSpace, pc, sects.dwarf_section, (uint32_t)sects.dwarf_section_length, sects.dwarf_section + fdeSectionOffsetHint, &fdeInfo, &cieInfo); } #if defined(_LIBUNWIND_SUPPORT_DWARF_INDEX) if (!foundFDE && (sects.dwarf_index_section != 0)) { foundFDE = EHHeaderParser::findFDE( _addressSpace, pc, sects.dwarf_index_section, (uint32_t)sects.dwarf_index_section_length, &fdeInfo, &cieInfo); } #endif if (!foundFDE) { // otherwise, search cache of previously found FDEs. pint_t cachedFDE = DwarfFDECache::findFDE(sects.dso_base, pc); if (cachedFDE != 0) { foundFDE = CFI_Parser::findFDE(_addressSpace, pc, sects.dwarf_section, (uint32_t)sects.dwarf_section_length, cachedFDE, &fdeInfo, &cieInfo); foundInCache = foundFDE; } } if (!foundFDE) { // Still not found, do full scan of __eh_frame section. foundFDE = CFI_Parser::findFDE(_addressSpace, pc, sects.dwarf_section, (uint32_t)sects.dwarf_section_length, 0, &fdeInfo, &cieInfo); } if (foundFDE) { typename CFI_Parser::PrologInfo prolog; if (CFI_Parser::parseFDEInstructions(_addressSpace, fdeInfo, cieInfo, pc, R::getArch(), &prolog)) { // Save off parsed FDE info _info.start_ip = fdeInfo.pcStart; _info.end_ip = fdeInfo.pcEnd; _info.lsda = fdeInfo.lsda; _info.handler = cieInfo.personality; _info.gp = prolog.spExtraArgSize; _info.flags = 0; _info.format = dwarfEncoding(); _info.unwind_info = fdeInfo.fdeStart; _info.unwind_info_size = (uint32_t)fdeInfo.fdeLength; _info.extra = (unw_word_t) sects.dso_base; // Add to cache (to make next lookup faster) if we had no hint // and there was no index. if (!foundInCache && (fdeSectionOffsetHint == 0)) { #if defined(_LIBUNWIND_SUPPORT_DWARF_INDEX) if (sects.dwarf_index_section == 0) #endif DwarfFDECache::add(sects.dso_base, fdeInfo.pcStart, fdeInfo.pcEnd, fdeInfo.fdeStart); } return true; } } //_LIBUNWIND_DEBUG_LOG("can't find/use FDE for pc=0x%llX", (uint64_t)pc); return false; } #endif // defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) #if defined(_LIBUNWIND_SUPPORT_COMPACT_UNWIND) template bool UnwindCursor::getInfoFromCompactEncodingSection(pint_t pc, const UnwindInfoSections §s) { const bool log = false; if (log) fprintf(stderr, "getInfoFromCompactEncodingSection(pc=0x%llX, mh=0x%llX)\n", (uint64_t)pc, (uint64_t)sects.dso_base); const UnwindSectionHeader sectionHeader(_addressSpace, sects.compact_unwind_section); if (sectionHeader.version() != UNWIND_SECTION_VERSION) return false; // do a binary search of top level index to find page with unwind info pint_t targetFunctionOffset = pc - sects.dso_base; const UnwindSectionIndexArray topIndex(_addressSpace, sects.compact_unwind_section + sectionHeader.indexSectionOffset()); uint32_t low = 0; uint32_t high = sectionHeader.indexCount(); uint32_t last = high - 1; while (low < high) { uint32_t mid = (low + high) / 2; //if ( log ) fprintf(stderr, "\tmid=%d, low=%d, high=%d, *mid=0x%08X\n", //mid, low, high, topIndex.functionOffset(mid)); if (topIndex.functionOffset(mid) <= targetFunctionOffset) { if ((mid == last) || (topIndex.functionOffset(mid + 1) > targetFunctionOffset)) { low = mid; break; } else { low = mid + 1; } } else { high = mid; } } const uint32_t firstLevelFunctionOffset = topIndex.functionOffset(low); const uint32_t firstLevelNextPageFunctionOffset = topIndex.functionOffset(low + 1); const pint_t secondLevelAddr = sects.compact_unwind_section + topIndex.secondLevelPagesSectionOffset(low); const pint_t lsdaArrayStartAddr = sects.compact_unwind_section + topIndex.lsdaIndexArraySectionOffset(low); const pint_t lsdaArrayEndAddr = sects.compact_unwind_section + topIndex.lsdaIndexArraySectionOffset(low+1); if (log) fprintf(stderr, "\tfirst level search for result index=%d " "to secondLevelAddr=0x%llX\n", low, (uint64_t) secondLevelAddr); // do a binary search of second level page index uint32_t encoding = 0; pint_t funcStart = 0; pint_t funcEnd = 0; pint_t lsda = 0; pint_t personality = 0; uint32_t pageKind = _addressSpace.get32(secondLevelAddr); if (pageKind == UNWIND_SECOND_LEVEL_REGULAR) { // regular page UnwindSectionRegularPageHeader pageHeader(_addressSpace, secondLevelAddr); UnwindSectionRegularArray pageIndex( _addressSpace, secondLevelAddr + pageHeader.entryPageOffset()); // binary search looks for entry with e where index[e].offset <= pc < // index[e+1].offset if (log) fprintf(stderr, "\tbinary search for targetFunctionOffset=0x%08llX in " "regular page starting at secondLevelAddr=0x%llX\n", (uint64_t) targetFunctionOffset, (uint64_t) secondLevelAddr); low = 0; high = pageHeader.entryCount(); while (low < high) { uint32_t mid = (low + high) / 2; if (pageIndex.functionOffset(mid) <= targetFunctionOffset) { if (mid == (uint32_t)(pageHeader.entryCount() - 1)) { // at end of table low = mid; funcEnd = firstLevelNextPageFunctionOffset + sects.dso_base; break; } else if (pageIndex.functionOffset(mid + 1) > targetFunctionOffset) { // next is too big, so we found it low = mid; funcEnd = pageIndex.functionOffset(low + 1) + sects.dso_base; break; } else { low = mid + 1; } } else { high = mid; } } encoding = pageIndex.encoding(low); funcStart = pageIndex.functionOffset(low) + sects.dso_base; if (pc < funcStart) { if (log) fprintf( stderr, "\tpc not in table, pc=0x%llX, funcStart=0x%llX, funcEnd=0x%llX\n", (uint64_t) pc, (uint64_t) funcStart, (uint64_t) funcEnd); return false; } if (pc > funcEnd) { if (log) fprintf( stderr, "\tpc not in table, pc=0x%llX, funcStart=0x%llX, funcEnd=0x%llX\n", (uint64_t) pc, (uint64_t) funcStart, (uint64_t) funcEnd); return false; } } else if (pageKind == UNWIND_SECOND_LEVEL_COMPRESSED) { // compressed page UnwindSectionCompressedPageHeader pageHeader(_addressSpace, secondLevelAddr); UnwindSectionCompressedArray pageIndex( _addressSpace, secondLevelAddr + pageHeader.entryPageOffset()); const uint32_t targetFunctionPageOffset = (uint32_t)(targetFunctionOffset - firstLevelFunctionOffset); // binary search looks for entry with e where index[e].offset <= pc < // index[e+1].offset if (log) fprintf(stderr, "\tbinary search of compressed page starting at " "secondLevelAddr=0x%llX\n", (uint64_t) secondLevelAddr); low = 0; last = pageHeader.entryCount() - 1; high = pageHeader.entryCount(); while (low < high) { uint32_t mid = (low + high) / 2; if (pageIndex.functionOffset(mid) <= targetFunctionPageOffset) { if ((mid == last) || (pageIndex.functionOffset(mid + 1) > targetFunctionPageOffset)) { low = mid; break; } else { low = mid + 1; } } else { high = mid; } } funcStart = pageIndex.functionOffset(low) + firstLevelFunctionOffset + sects.dso_base; if (low < last) funcEnd = pageIndex.functionOffset(low + 1) + firstLevelFunctionOffset + sects.dso_base; else funcEnd = firstLevelNextPageFunctionOffset + sects.dso_base; if (pc < funcStart) { _LIBUNWIND_DEBUG_LOG("malformed __unwind_info, pc=0x%llX not in second " "level compressed unwind table. funcStart=0x%llX", (uint64_t) pc, (uint64_t) funcStart); return false; } if (pc > funcEnd) { _LIBUNWIND_DEBUG_LOG("malformed __unwind_info, pc=0x%llX not in second " "level compressed unwind table. funcEnd=0x%llX", (uint64_t) pc, (uint64_t) funcEnd); return false; } uint16_t encodingIndex = pageIndex.encodingIndex(low); if (encodingIndex < sectionHeader.commonEncodingsArrayCount()) { // encoding is in common table in section header encoding = _addressSpace.get32( sects.compact_unwind_section + sectionHeader.commonEncodingsArraySectionOffset() + encodingIndex * sizeof(uint32_t)); } else { // encoding is in page specific table uint16_t pageEncodingIndex = encodingIndex - (uint16_t)sectionHeader.commonEncodingsArrayCount(); encoding = _addressSpace.get32(secondLevelAddr + pageHeader.encodingsPageOffset() + pageEncodingIndex * sizeof(uint32_t)); } } else { _LIBUNWIND_DEBUG_LOG("malformed __unwind_info at 0x%0llX bad second " "level page", (uint64_t) sects.compact_unwind_section); return false; } // look up LSDA, if encoding says function has one if (encoding & UNWIND_HAS_LSDA) { UnwindSectionLsdaArray lsdaIndex(_addressSpace, lsdaArrayStartAddr); uint32_t funcStartOffset = (uint32_t)(funcStart - sects.dso_base); low = 0; high = (uint32_t)(lsdaArrayEndAddr - lsdaArrayStartAddr) / sizeof(unwind_info_section_header_lsda_index_entry); // binary search looks for entry with exact match for functionOffset if (log) fprintf(stderr, "\tbinary search of lsda table for targetFunctionOffset=0x%08X\n", funcStartOffset); while (low < high) { uint32_t mid = (low + high) / 2; if (lsdaIndex.functionOffset(mid) == funcStartOffset) { lsda = lsdaIndex.lsdaOffset(mid) + sects.dso_base; break; } else if (lsdaIndex.functionOffset(mid) < funcStartOffset) { low = mid + 1; } else { high = mid; } } if (lsda == 0) { _LIBUNWIND_DEBUG_LOG("found encoding 0x%08X with HAS_LSDA bit set for " "pc=0x%0llX, but lsda table has no entry", encoding, (uint64_t) pc); return false; } } // extact personality routine, if encoding says function has one uint32_t personalityIndex = (encoding & UNWIND_PERSONALITY_MASK) >> (__builtin_ctz(UNWIND_PERSONALITY_MASK)); if (personalityIndex != 0) { --personalityIndex; // change 1-based to zero-based index if (personalityIndex > sectionHeader.personalityArrayCount()) { _LIBUNWIND_DEBUG_LOG("found encoding 0x%08X with personality index %d, " - "but personality table has only %d entires", + "but personality table has only %d entries", encoding, personalityIndex, sectionHeader.personalityArrayCount()); return false; } int32_t personalityDelta = (int32_t)_addressSpace.get32( sects.compact_unwind_section + sectionHeader.personalityArraySectionOffset() + personalityIndex * sizeof(uint32_t)); pint_t personalityPointer = sects.dso_base + (pint_t)personalityDelta; personality = _addressSpace.getP(personalityPointer); if (log) fprintf(stderr, "getInfoFromCompactEncodingSection(pc=0x%llX), " "personalityDelta=0x%08X, personality=0x%08llX\n", (uint64_t) pc, personalityDelta, (uint64_t) personality); } if (log) fprintf(stderr, "getInfoFromCompactEncodingSection(pc=0x%llX), " "encoding=0x%08X, lsda=0x%08llX for funcStart=0x%llX\n", (uint64_t) pc, encoding, (uint64_t) lsda, (uint64_t) funcStart); _info.start_ip = funcStart; _info.end_ip = funcEnd; _info.lsda = lsda; _info.handler = personality; _info.gp = 0; _info.flags = 0; _info.format = encoding; _info.unwind_info = 0; _info.unwind_info_size = 0; _info.extra = sects.dso_base; return true; } #endif // defined(_LIBUNWIND_SUPPORT_COMPACT_UNWIND) #if defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) template bool UnwindCursor::getInfoFromSEH(pint_t pc) { pint_t base; RUNTIME_FUNCTION *unwindEntry = lookUpSEHUnwindInfo(pc, &base); if (!unwindEntry) { _LIBUNWIND_DEBUG_LOG("\tpc not in table, pc=0x%llX", (uint64_t) pc); return false; } _info.gp = 0; _info.flags = 0; _info.format = 0; _info.unwind_info_size = sizeof(RUNTIME_FUNCTION); _info.unwind_info = reinterpret_cast(unwindEntry); _info.extra = base; _info.start_ip = base + unwindEntry->BeginAddress; #ifdef _LIBUNWIND_TARGET_X86_64 _info.end_ip = base + unwindEntry->EndAddress; // Only fill in the handler and LSDA if they're stale. if (pc != getLastPC()) { UNWIND_INFO *xdata = reinterpret_cast(base + unwindEntry->UnwindData); if (xdata->Flags & (UNW_FLAG_EHANDLER|UNW_FLAG_UHANDLER)) { // The personality is given in the UNWIND_INFO itself. The LSDA immediately // follows the UNWIND_INFO. (This follows how both Clang and MSVC emit // these structures.) // N.B. UNWIND_INFO structs are DWORD-aligned. uint32_t lastcode = (xdata->CountOfCodes + 1) & ~1; const uint32_t *handler = reinterpret_cast(&xdata->UnwindCodes[lastcode]); _info.lsda = reinterpret_cast(handler+1); if (*handler) { _info.handler = reinterpret_cast(__libunwind_seh_personality); } else _info.handler = 0; } else { _info.lsda = 0; _info.handler = 0; } } #elif defined(_LIBUNWIND_TARGET_ARM) _info.end_ip = _info.start_ip + unwindEntry->FunctionLength; _info.lsda = 0; // FIXME _info.handler = 0; // FIXME #endif setLastPC(pc); return true; } #endif template void UnwindCursor::setInfoBasedOnIPRegister(bool isReturnAddress) { pint_t pc = (pint_t)this->getReg(UNW_REG_IP); #if defined(_LIBUNWIND_ARM_EHABI) // Remove the thumb bit so the IP represents the actual instruction address. // This matches the behaviour of _Unwind_GetIP on arm. pc &= (pint_t)~0x1; #endif // If the last line of a function is a "throw" the compiler sometimes // emits no instructions after the call to __cxa_throw. This means // the return address is actually the start of the next function. // To disambiguate this, back up the pc when we know it is a return // address. if (isReturnAddress) --pc; // Ask address space object to find unwind sections for this pc. UnwindInfoSections sects; if (_addressSpace.findUnwindSections(pc, sects)) { #if defined(_LIBUNWIND_SUPPORT_COMPACT_UNWIND) // If there is a compact unwind encoding table, look there first. if (sects.compact_unwind_section != 0) { if (this->getInfoFromCompactEncodingSection(pc, sects)) { #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) // Found info in table, done unless encoding says to use dwarf. uint32_t dwarfOffset; if ((sects.dwarf_section != 0) && compactSaysUseDwarf(&dwarfOffset)) { if (this->getInfoFromDwarfSection(pc, sects, dwarfOffset)) { // found info in dwarf, done return; } } #endif // If unwind table has entry, but entry says there is no unwind info, // record that we have no unwind info. if (_info.format == 0) _unwindInfoMissing = true; return; } } #endif // defined(_LIBUNWIND_SUPPORT_COMPACT_UNWIND) #if defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) // If there is SEH unwind info, look there next. if (this->getInfoFromSEH(pc)) return; #endif #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) // If there is dwarf unwind info, look there next. if (sects.dwarf_section != 0) { if (this->getInfoFromDwarfSection(pc, sects)) { // found info in dwarf, done return; } } #endif #if defined(_LIBUNWIND_ARM_EHABI) // If there is ARM EHABI unwind info, look there next. if (sects.arm_section != 0 && this->getInfoFromEHABISection(pc, sects)) return; #endif } #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) // There is no static unwind info for this pc. Look to see if an FDE was // dynamically registered for it. pint_t cachedFDE = DwarfFDECache::findFDE(0, pc); if (cachedFDE != 0) { CFI_Parser::FDE_Info fdeInfo; CFI_Parser::CIE_Info cieInfo; const char *msg = CFI_Parser::decodeFDE(_addressSpace, cachedFDE, &fdeInfo, &cieInfo); if (msg == NULL) { typename CFI_Parser::PrologInfo prolog; if (CFI_Parser::parseFDEInstructions(_addressSpace, fdeInfo, cieInfo, pc, R::getArch(), &prolog)) { // save off parsed FDE info _info.start_ip = fdeInfo.pcStart; _info.end_ip = fdeInfo.pcEnd; _info.lsda = fdeInfo.lsda; _info.handler = cieInfo.personality; _info.gp = prolog.spExtraArgSize; // Some frameless functions need SP // altered when resuming in function. _info.flags = 0; _info.format = dwarfEncoding(); _info.unwind_info = fdeInfo.fdeStart; _info.unwind_info_size = (uint32_t)fdeInfo.fdeLength; _info.extra = 0; return; } } } // Lastly, ask AddressSpace object about platform specific ways to locate // other FDEs. pint_t fde; if (_addressSpace.findOtherFDE(pc, fde)) { CFI_Parser::FDE_Info fdeInfo; CFI_Parser::CIE_Info cieInfo; if (!CFI_Parser::decodeFDE(_addressSpace, fde, &fdeInfo, &cieInfo)) { // Double check this FDE is for a function that includes the pc. if ((fdeInfo.pcStart <= pc) && (pc < fdeInfo.pcEnd)) { typename CFI_Parser::PrologInfo prolog; if (CFI_Parser::parseFDEInstructions(_addressSpace, fdeInfo, cieInfo, pc, R::getArch(), &prolog)) { // save off parsed FDE info _info.start_ip = fdeInfo.pcStart; _info.end_ip = fdeInfo.pcEnd; _info.lsda = fdeInfo.lsda; _info.handler = cieInfo.personality; _info.gp = prolog.spExtraArgSize; _info.flags = 0; _info.format = dwarfEncoding(); _info.unwind_info = fdeInfo.fdeStart; _info.unwind_info_size = (uint32_t)fdeInfo.fdeLength; _info.extra = 0; return; } } } } #endif // #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) // no unwind info, flag that we can't reliably unwind _unwindInfoMissing = true; } template int UnwindCursor::step() { // Bottom of stack is defined is when unwind info cannot be found. if (_unwindInfoMissing) return UNW_STEP_END; // Use unwinding info to modify register set as if function returned. int result; #if defined(_LIBUNWIND_SUPPORT_COMPACT_UNWIND) result = this->stepWithCompactEncoding(); #elif defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) result = this->stepWithSEHData(); #elif defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) result = this->stepWithDwarfFDE(); #elif defined(_LIBUNWIND_ARM_EHABI) result = this->stepWithEHABI(); #else #error Need _LIBUNWIND_SUPPORT_COMPACT_UNWIND or \ _LIBUNWIND_SUPPORT_SEH_UNWIND or \ _LIBUNWIND_SUPPORT_DWARF_UNWIND or \ _LIBUNWIND_ARM_EHABI #endif // update info based on new PC if (result == UNW_STEP_SUCCESS) { this->setInfoBasedOnIPRegister(true); if (_unwindInfoMissing) return UNW_STEP_END; } return result; } template void UnwindCursor::getInfo(unw_proc_info_t *info) { *info = _info; } template bool UnwindCursor::getFunctionName(char *buf, size_t bufLen, unw_word_t *offset) { return _addressSpace.findFunctionName((pint_t)this->getReg(UNW_REG_IP), buf, bufLen, offset); } } // namespace libunwind #endif // __UNWINDCURSOR_HPP__ Index: projects/clang900-import/contrib/libunwind/src/UnwindLevel1-gcc-ext.c =================================================================== --- projects/clang900-import/contrib/libunwind/src/UnwindLevel1-gcc-ext.c (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/UnwindLevel1-gcc-ext.c (revision 351404) @@ -1,362 +1,361 @@ //===--------------------- UnwindLevel1-gcc-ext.c -------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // Implements gcc extensions to the C++ ABI Exception Handling Level 1. // //===----------------------------------------------------------------------===// #include #include #include #include #include #include #include "config.h" #include "libunwind_ext.h" #include "libunwind.h" #include "Unwind-EHABI.h" #include "unwind.h" #if defined(_LIBUNWIND_BUILD_ZERO_COST_APIS) #if defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) #define private_1 private_[0] #endif /// Called by __cxa_rethrow(). _LIBUNWIND_EXPORT _Unwind_Reason_Code _Unwind_Resume_or_Rethrow(_Unwind_Exception *exception_object) { #if defined(_LIBUNWIND_ARM_EHABI) _LIBUNWIND_TRACE_API("_Unwind_Resume_or_Rethrow(ex_obj=%p), private_1=%ld", (void *)exception_object, (long)exception_object->unwinder_cache.reserved1); #else _LIBUNWIND_TRACE_API("_Unwind_Resume_or_Rethrow(ex_obj=%p), private_1=%" PRIdPTR, (void *)exception_object, (intptr_t)exception_object->private_1); #endif #if defined(_LIBUNWIND_ARM_EHABI) // _Unwind_RaiseException on EHABI will always set the reserved1 field to 0, // which is in the same position as private_1 below. return _Unwind_RaiseException(exception_object); #else // If this is non-forced and a stopping place was found, then this is a // re-throw. // Call _Unwind_RaiseException() as if this was a new exception if (exception_object->private_1 == 0) { return _Unwind_RaiseException(exception_object); // Will return if there is no catch clause, so that __cxa_rethrow can call // std::terminate(). } // Call through to _Unwind_Resume() which distiguishes between forced and // regular exceptions. _Unwind_Resume(exception_object); _LIBUNWIND_ABORT("_Unwind_Resume_or_Rethrow() called _Unwind_RaiseException()" " which unexpectedly returned"); #endif } /// Called by personality handler during phase 2 to get base address for data /// relative encodings. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetDataRelBase(struct _Unwind_Context *context) { (void)context; _LIBUNWIND_TRACE_API("_Unwind_GetDataRelBase(context=%p)", (void *)context); _LIBUNWIND_ABORT("_Unwind_GetDataRelBase() not implemented"); } /// Called by personality handler during phase 2 to get base address for text /// relative encodings. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetTextRelBase(struct _Unwind_Context *context) { (void)context; _LIBUNWIND_TRACE_API("_Unwind_GetTextRelBase(context=%p)", (void *)context); _LIBUNWIND_ABORT("_Unwind_GetTextRelBase() not implemented"); } /// Scans unwind information to find the function that contains the /// specified code address "pc". _LIBUNWIND_EXPORT void *_Unwind_FindEnclosingFunction(void *pc) { _LIBUNWIND_TRACE_API("_Unwind_FindEnclosingFunction(pc=%p)", pc); // This is slow, but works. // We create an unwind cursor then alter the IP to be pc unw_cursor_t cursor; unw_context_t uc; unw_proc_info_t info; - unw_getcontext(&uc); - unw_init_local(&cursor, &uc); - unw_set_reg(&cursor, UNW_REG_IP, (unw_word_t)(intptr_t) pc); - if (unw_get_proc_info(&cursor, &info) == UNW_ESUCCESS) + __unw_getcontext(&uc); + __unw_init_local(&cursor, &uc); + __unw_set_reg(&cursor, UNW_REG_IP, (unw_word_t)(intptr_t)pc); + if (__unw_get_proc_info(&cursor, &info) == UNW_ESUCCESS) return (void *)(intptr_t) info.start_ip; else return NULL; } /// Walk every frame and call trace function at each one. If trace function /// returns anything other than _URC_NO_REASON, then walk is terminated. _LIBUNWIND_EXPORT _Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn callback, void *ref) { unw_cursor_t cursor; unw_context_t uc; - unw_getcontext(&uc); - unw_init_local(&cursor, &uc); + __unw_getcontext(&uc); + __unw_init_local(&cursor, &uc); _LIBUNWIND_TRACE_API("_Unwind_Backtrace(callback=%p)", (void *)(uintptr_t)callback); #if defined(_LIBUNWIND_ARM_EHABI) // Create a mock exception object for force unwinding. _Unwind_Exception ex; memset(&ex, '\0', sizeof(ex)); ex.exception_class = 0x434C4E47554E5700; // CLNGUNW\0 #endif // walk each frame while (true) { _Unwind_Reason_Code result; #if !defined(_LIBUNWIND_ARM_EHABI) // ask libunwind to get next frame (skip over first frame which is // _Unwind_Backtrace()) - if (unw_step(&cursor) <= 0) { + if (__unw_step(&cursor) <= 0) { _LIBUNWIND_TRACE_UNWINDING(" _backtrace: ended because cursor reached " "bottom of stack, returning %d", _URC_END_OF_STACK); return _URC_END_OF_STACK; } #else // Get the information for this frame. unw_proc_info_t frameInfo; - if (unw_get_proc_info(&cursor, &frameInfo) != UNW_ESUCCESS) { + if (__unw_get_proc_info(&cursor, &frameInfo) != UNW_ESUCCESS) { return _URC_END_OF_STACK; } // Update the pr_cache in the mock exception object. const uint32_t* unwindInfo = (uint32_t *) frameInfo.unwind_info; ex.pr_cache.fnstart = frameInfo.start_ip; ex.pr_cache.ehtp = (_Unwind_EHT_Header *) unwindInfo; ex.pr_cache.additional= frameInfo.flags; struct _Unwind_Context *context = (struct _Unwind_Context *)&cursor; // Get and call the personality function to unwind the frame. __personality_routine handler = (__personality_routine) frameInfo.handler; if (handler == NULL) { return _URC_END_OF_STACK; } if (handler(_US_VIRTUAL_UNWIND_FRAME | _US_FORCE_UNWIND, &ex, context) != _URC_CONTINUE_UNWIND) { return _URC_END_OF_STACK; } #endif // defined(_LIBUNWIND_ARM_EHABI) // debugging if (_LIBUNWIND_TRACING_UNWINDING) { char functionName[512]; unw_proc_info_t frame; unw_word_t offset; - unw_get_proc_name(&cursor, functionName, 512, &offset); - unw_get_proc_info(&cursor, &frame); + __unw_get_proc_name(&cursor, functionName, 512, &offset); + __unw_get_proc_info(&cursor, &frame); _LIBUNWIND_TRACE_UNWINDING( " _backtrace: start_ip=0x%" PRIxPTR ", func=%s, lsda=0x%" PRIxPTR ", context=%p", frame.start_ip, functionName, frame.lsda, (void *)&cursor); } // call trace function with this frame result = (*callback)((struct _Unwind_Context *)(&cursor), ref); if (result != _URC_NO_REASON) { _LIBUNWIND_TRACE_UNWINDING( " _backtrace: ended because callback returned %d", result); return result; } } } /// Find DWARF unwind info for an address 'pc' in some function. _LIBUNWIND_EXPORT const void *_Unwind_Find_FDE(const void *pc, struct dwarf_eh_bases *bases) { // This is slow, but works. // We create an unwind cursor then alter the IP to be pc unw_cursor_t cursor; unw_context_t uc; unw_proc_info_t info; - unw_getcontext(&uc); - unw_init_local(&cursor, &uc); - unw_set_reg(&cursor, UNW_REG_IP, (unw_word_t)(intptr_t) pc); - unw_get_proc_info(&cursor, &info); + __unw_getcontext(&uc); + __unw_init_local(&cursor, &uc); + __unw_set_reg(&cursor, UNW_REG_IP, (unw_word_t)(intptr_t)pc); + __unw_get_proc_info(&cursor, &info); bases->tbase = (uintptr_t)info.extra; bases->dbase = 0; // dbase not used on Mac OS X bases->func = (uintptr_t)info.start_ip; _LIBUNWIND_TRACE_API("_Unwind_Find_FDE(pc=%p) => %p", pc, (void *)(intptr_t) info.unwind_info); return (void *)(intptr_t) info.unwind_info; } /// Returns the CFA (call frame area, or stack pointer at start of function) /// for the current context. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetCFA(struct _Unwind_Context *context) { unw_cursor_t *cursor = (unw_cursor_t *)context; unw_word_t result; - unw_get_reg(cursor, UNW_REG_SP, &result); + __unw_get_reg(cursor, UNW_REG_SP, &result); _LIBUNWIND_TRACE_API("_Unwind_GetCFA(context=%p) => 0x%" PRIxPTR, (void *)context, result); return (uintptr_t)result; } /// Called by personality handler during phase 2 to get instruction pointer. /// ipBefore is a boolean that says if IP is already adjusted to be the call /// site address. Normally IP is the return address. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetIPInfo(struct _Unwind_Context *context, int *ipBefore) { _LIBUNWIND_TRACE_API("_Unwind_GetIPInfo(context=%p)", (void *)context); *ipBefore = 0; return _Unwind_GetIP(context); } #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) #ifdef __FreeBSD__ // Based on LLVM's lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp // and XXX should be fixed to be alignment-safe. static void processFDE(const char *addr, bool isDeregister) { uint64_t length; while ((length = *((const uint32_t *)addr)) != 0) { const char *p = addr + 4; if (length == 0xffffffff) { length = *((const uint64_t *)p); p += 8; } uint32_t offset = *((const uint32_t *)p); if (offset != 0) { if (isDeregister) _unw_remove_dynamic_fde((unw_word_t)(uintptr_t)addr); else _unw_add_dynamic_fde((unw_word_t)(uintptr_t)addr); } addr = p + length; } } /// Called by programs with dynamic code generators that want to register /// dynamically generated FDEs, with a libgcc-compatible API. _LIBUNWIND_EXPORT void __register_frame(const void *addr) { _LIBUNWIND_TRACE_API("__register_frame(%p)", addr); processFDE(addr, false); } /// Called by programs with dynamic code generators that want to unregister /// dynamically generated FDEs, with a libgcc-compatible API. _LIBUNWIND_EXPORT void __deregister_frame(const void *addr) { _LIBUNWIND_TRACE_API("__deregister_frame(%p)", addr); processFDE(addr, true); } #else /// Called by programs with dynamic code generators that want /// to register a dynamically generated FDE. /// This function has existed on Mac OS X since 10.4, but /// was broken until 10.6. _LIBUNWIND_EXPORT void __register_frame(const void *fde) { _LIBUNWIND_TRACE_API("__register_frame(%p)", fde); - _unw_add_dynamic_fde((unw_word_t)(uintptr_t) fde); + __unw_add_dynamic_fde((unw_word_t)(uintptr_t)fde); } /// Called by programs with dynamic code generators that want /// to unregister a dynamically generated FDE. /// This function has existed on Mac OS X since 10.4, but /// was broken until 10.6. _LIBUNWIND_EXPORT void __deregister_frame(const void *fde) { _LIBUNWIND_TRACE_API("__deregister_frame(%p)", fde); - _unw_remove_dynamic_fde((unw_word_t)(uintptr_t) fde); + __unw_remove_dynamic_fde((unw_word_t)(uintptr_t)fde); } #endif // The following register/deregister functions are gcc extensions. // They have existed on Mac OS X, but have never worked because Mac OS X // before 10.6 used keymgr to track known FDEs, but these functions // never got updated to use keymgr. // For now, we implement these as do-nothing functions to keep any existing // applications working. We also add the not in 10.6 symbol so that nwe // application won't be able to use them. #if defined(_LIBUNWIND_SUPPORT_FRAME_APIS) _LIBUNWIND_EXPORT void __register_frame_info_bases(const void *fde, void *ob, void *tb, void *db) { (void)fde; (void)ob; (void)tb; (void)db; _LIBUNWIND_TRACE_API("__register_frame_info_bases(%p,%p, %p, %p)", fde, ob, tb, db); // do nothing, this function never worked in Mac OS X } _LIBUNWIND_EXPORT void __register_frame_info(const void *fde, void *ob) { (void)fde; (void)ob; _LIBUNWIND_TRACE_API("__register_frame_info(%p, %p)", fde, ob); // do nothing, this function never worked in Mac OS X } _LIBUNWIND_EXPORT void __register_frame_info_table_bases(const void *fde, void *ob, void *tb, void *db) { (void)fde; (void)ob; (void)tb; (void)db; _LIBUNWIND_TRACE_API("__register_frame_info_table_bases" "(%p,%p, %p, %p)", fde, ob, tb, db); // do nothing, this function never worked in Mac OS X } _LIBUNWIND_EXPORT void __register_frame_info_table(const void *fde, void *ob) { (void)fde; (void)ob; _LIBUNWIND_TRACE_API("__register_frame_info_table(%p, %p)", fde, ob); // do nothing, this function never worked in Mac OS X } _LIBUNWIND_EXPORT void __register_frame_table(const void *fde) { (void)fde; _LIBUNWIND_TRACE_API("__register_frame_table(%p)", fde); // do nothing, this function never worked in Mac OS X } _LIBUNWIND_EXPORT void *__deregister_frame_info(const void *fde) { (void)fde; _LIBUNWIND_TRACE_API("__deregister_frame_info(%p)", fde); // do nothing, this function never worked in Mac OS X return NULL; } _LIBUNWIND_EXPORT void *__deregister_frame_info_bases(const void *fde) { (void)fde; _LIBUNWIND_TRACE_API("__deregister_frame_info_bases(%p)", fde); // do nothing, this function never worked in Mac OS X return NULL; } #endif // defined(_LIBUNWIND_SUPPORT_FRAME_APIS) #endif // defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) #endif // defined(_LIBUNWIND_BUILD_ZERO_COST_APIS) Index: projects/clang900-import/contrib/libunwind/src/UnwindLevel1.c =================================================================== --- projects/clang900-import/contrib/libunwind/src/UnwindLevel1.c (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/UnwindLevel1.c (revision 351404) @@ -1,509 +1,515 @@ //===------------------------- UnwindLevel1.c -----------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // Implements C++ ABI Exception Handling Level 1 as documented at: -// http://mentorembedded.github.io/cxx-abi/abi-eh.html +// https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html // using libunwind // //===----------------------------------------------------------------------===// // ARM EHABI does not specify _Unwind_{Get,Set}{GR,IP}(). Thus, we are // defining inline functions to delegate the function calls to // _Unwind_VRS_{Get,Set}(). However, some applications might declare the // function protetype directly (instead of including ), thus we need // to export these functions from libunwind.so as well. #define _LIBUNWIND_UNWIND_LEVEL1_EXTERNAL_LINKAGE 1 #include #include #include #include #include #include +#include "config.h" #include "libunwind.h" +#include "libunwind_ext.h" #include "unwind.h" -#include "config.h" #if !defined(_LIBUNWIND_ARM_EHABI) && !defined(__USING_SJLJ_EXCEPTIONS__) #ifndef _LIBUNWIND_SUPPORT_SEH_UNWIND static _Unwind_Reason_Code unwind_phase1(unw_context_t *uc, unw_cursor_t *cursor, _Unwind_Exception *exception_object) { - unw_init_local(cursor, uc); + __unw_init_local(cursor, uc); // Walk each frame looking for a place to stop. bool handlerNotFound = true; while (handlerNotFound) { // Ask libunwind to get next frame (skip over first which is // _Unwind_RaiseException). - int stepResult = unw_step(cursor); + int stepResult = __unw_step(cursor); if (stepResult == 0) { - _LIBUNWIND_TRACE_UNWINDING("unwind_phase1(ex_ojb=%p): unw_step() reached " - "bottom => _URC_END_OF_STACK", - (void *)exception_object); + _LIBUNWIND_TRACE_UNWINDING( + "unwind_phase1(ex_ojb=%p): __unw_step() reached " + "bottom => _URC_END_OF_STACK", + (void *)exception_object); return _URC_END_OF_STACK; } else if (stepResult < 0) { - _LIBUNWIND_TRACE_UNWINDING("unwind_phase1(ex_ojb=%p): unw_step failed => " - "_URC_FATAL_PHASE1_ERROR", - (void *)exception_object); + _LIBUNWIND_TRACE_UNWINDING( + "unwind_phase1(ex_ojb=%p): __unw_step failed => " + "_URC_FATAL_PHASE1_ERROR", + (void *)exception_object); return _URC_FATAL_PHASE1_ERROR; } // See if frame has code to run (has personality routine). unw_proc_info_t frameInfo; unw_word_t sp; - if (unw_get_proc_info(cursor, &frameInfo) != UNW_ESUCCESS) { - _LIBUNWIND_TRACE_UNWINDING("unwind_phase1(ex_ojb=%p): unw_get_proc_info " - "failed => _URC_FATAL_PHASE1_ERROR", - (void *)exception_object); + if (__unw_get_proc_info(cursor, &frameInfo) != UNW_ESUCCESS) { + _LIBUNWIND_TRACE_UNWINDING( + "unwind_phase1(ex_ojb=%p): __unw_get_proc_info " + "failed => _URC_FATAL_PHASE1_ERROR", + (void *)exception_object); return _URC_FATAL_PHASE1_ERROR; } // When tracing, print state information. if (_LIBUNWIND_TRACING_UNWINDING) { char functionBuf[512]; const char *functionName = functionBuf; unw_word_t offset; - if ((unw_get_proc_name(cursor, functionBuf, sizeof(functionBuf), - &offset) != UNW_ESUCCESS) || + if ((__unw_get_proc_name(cursor, functionBuf, sizeof(functionBuf), + &offset) != UNW_ESUCCESS) || (frameInfo.start_ip + offset > frameInfo.end_ip)) functionName = ".anonymous."; unw_word_t pc; - unw_get_reg(cursor, UNW_REG_IP, &pc); + __unw_get_reg(cursor, UNW_REG_IP, &pc); _LIBUNWIND_TRACE_UNWINDING( "unwind_phase1(ex_ojb=%p): pc=0x%" PRIxPTR ", start_ip=0x%" PRIxPTR ", func=%s, lsda=0x%" PRIxPTR ", personality=0x%" PRIxPTR "", (void *)exception_object, pc, frameInfo.start_ip, functionName, frameInfo.lsda, frameInfo.handler); } // If there is a personality routine, ask it if it will want to stop at // this frame. if (frameInfo.handler != 0) { __personality_routine p = (__personality_routine)(uintptr_t)(frameInfo.handler); _LIBUNWIND_TRACE_UNWINDING( "unwind_phase1(ex_ojb=%p): calling personality function %p", (void *)exception_object, (void *)(uintptr_t)p); _Unwind_Reason_Code personalityResult = (*p)(1, _UA_SEARCH_PHASE, exception_object->exception_class, exception_object, (struct _Unwind_Context *)(cursor)); switch (personalityResult) { case _URC_HANDLER_FOUND: // found a catch clause or locals that need destructing in this frame // stop search and remember stack pointer at the frame handlerNotFound = false; - unw_get_reg(cursor, UNW_REG_SP, &sp); + __unw_get_reg(cursor, UNW_REG_SP, &sp); exception_object->private_2 = (uintptr_t)sp; _LIBUNWIND_TRACE_UNWINDING( "unwind_phase1(ex_ojb=%p): _URC_HANDLER_FOUND", (void *)exception_object); return _URC_NO_REASON; case _URC_CONTINUE_UNWIND: _LIBUNWIND_TRACE_UNWINDING( "unwind_phase1(ex_ojb=%p): _URC_CONTINUE_UNWIND", (void *)exception_object); // continue unwinding break; default: // something went wrong _LIBUNWIND_TRACE_UNWINDING( "unwind_phase1(ex_ojb=%p): _URC_FATAL_PHASE1_ERROR", (void *)exception_object); return _URC_FATAL_PHASE1_ERROR; } } } return _URC_NO_REASON; } static _Unwind_Reason_Code unwind_phase2(unw_context_t *uc, unw_cursor_t *cursor, _Unwind_Exception *exception_object) { - unw_init_local(cursor, uc); + __unw_init_local(cursor, uc); _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p)", (void *)exception_object); // Walk each frame until we reach where search phase said to stop. while (true) { // Ask libunwind to get next frame (skip over first which is // _Unwind_RaiseException). - int stepResult = unw_step(cursor); + int stepResult = __unw_step(cursor); if (stepResult == 0) { - _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p): unw_step() reached " - "bottom => _URC_END_OF_STACK", - (void *)exception_object); + _LIBUNWIND_TRACE_UNWINDING( + "unwind_phase2(ex_ojb=%p): __unw_step() reached " + "bottom => _URC_END_OF_STACK", + (void *)exception_object); return _URC_END_OF_STACK; } else if (stepResult < 0) { - _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p): unw_step failed => " - "_URC_FATAL_PHASE1_ERROR", - (void *)exception_object); + _LIBUNWIND_TRACE_UNWINDING( + "unwind_phase2(ex_ojb=%p): __unw_step failed => " + "_URC_FATAL_PHASE1_ERROR", + (void *)exception_object); return _URC_FATAL_PHASE2_ERROR; } // Get info about this frame. unw_word_t sp; unw_proc_info_t frameInfo; - unw_get_reg(cursor, UNW_REG_SP, &sp); - if (unw_get_proc_info(cursor, &frameInfo) != UNW_ESUCCESS) { - _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p): unw_get_proc_info " - "failed => _URC_FATAL_PHASE1_ERROR", - (void *)exception_object); + __unw_get_reg(cursor, UNW_REG_SP, &sp); + if (__unw_get_proc_info(cursor, &frameInfo) != UNW_ESUCCESS) { + _LIBUNWIND_TRACE_UNWINDING( + "unwind_phase2(ex_ojb=%p): __unw_get_proc_info " + "failed => _URC_FATAL_PHASE1_ERROR", + (void *)exception_object); return _URC_FATAL_PHASE2_ERROR; } // When tracing, print state information. if (_LIBUNWIND_TRACING_UNWINDING) { char functionBuf[512]; const char *functionName = functionBuf; unw_word_t offset; - if ((unw_get_proc_name(cursor, functionBuf, sizeof(functionBuf), - &offset) != UNW_ESUCCESS) || + if ((__unw_get_proc_name(cursor, functionBuf, sizeof(functionBuf), + &offset) != UNW_ESUCCESS) || (frameInfo.start_ip + offset > frameInfo.end_ip)) functionName = ".anonymous."; _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p): start_ip=0x%" PRIxPTR ", func=%s, sp=0x%" PRIxPTR ", lsda=0x%" PRIxPTR ", personality=0x%" PRIxPTR, (void *)exception_object, frameInfo.start_ip, functionName, sp, frameInfo.lsda, frameInfo.handler); } // If there is a personality routine, tell it we are unwinding. if (frameInfo.handler != 0) { __personality_routine p = (__personality_routine)(uintptr_t)(frameInfo.handler); _Unwind_Action action = _UA_CLEANUP_PHASE; if (sp == exception_object->private_2) { // Tell personality this was the frame it marked in phase 1. action = (_Unwind_Action)(_UA_CLEANUP_PHASE | _UA_HANDLER_FRAME); } _Unwind_Reason_Code personalityResult = (*p)(1, action, exception_object->exception_class, exception_object, (struct _Unwind_Context *)(cursor)); switch (personalityResult) { case _URC_CONTINUE_UNWIND: // Continue unwinding _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2(ex_ojb=%p): _URC_CONTINUE_UNWIND", (void *)exception_object); if (sp == exception_object->private_2) { // Phase 1 said we would stop at this frame, but we did not... _LIBUNWIND_ABORT("during phase1 personality function said it would " "stop here, but now in phase2 it did not stop here"); } break; case _URC_INSTALL_CONTEXT: _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2(ex_ojb=%p): _URC_INSTALL_CONTEXT", (void *)exception_object); // Personality routine says to transfer control to landing pad. // We may get control back if landing pad calls _Unwind_Resume(). if (_LIBUNWIND_TRACING_UNWINDING) { unw_word_t pc; - unw_get_reg(cursor, UNW_REG_IP, &pc); - unw_get_reg(cursor, UNW_REG_SP, &sp); + __unw_get_reg(cursor, UNW_REG_IP, &pc); + __unw_get_reg(cursor, UNW_REG_SP, &sp); _LIBUNWIND_TRACE_UNWINDING("unwind_phase2(ex_ojb=%p): re-entering " "user code with ip=0x%" PRIxPTR ", sp=0x%" PRIxPTR, (void *)exception_object, pc, sp); } - unw_resume(cursor); - // unw_resume() only returns if there was an error. + __unw_resume(cursor); + // __unw_resume() only returns if there was an error. return _URC_FATAL_PHASE2_ERROR; default: // Personality routine returned an unknown result code. _LIBUNWIND_DEBUG_LOG("personality function returned unknown result %d", personalityResult); return _URC_FATAL_PHASE2_ERROR; } } } // Clean up phase did not resume at the frame that the search phase // said it would... return _URC_FATAL_PHASE2_ERROR; } static _Unwind_Reason_Code unwind_phase2_forced(unw_context_t *uc, unw_cursor_t *cursor, _Unwind_Exception *exception_object, _Unwind_Stop_Fn stop, void *stop_parameter) { - unw_init_local(cursor, uc); + __unw_init_local(cursor, uc); // Walk each frame until we reach where search phase said to stop - while (unw_step(cursor) > 0) { + while (__unw_step(cursor) > 0) { // Update info about this frame. unw_proc_info_t frameInfo; - if (unw_get_proc_info(cursor, &frameInfo) != UNW_ESUCCESS) { - _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): unw_step " + if (__unw_get_proc_info(cursor, &frameInfo) != UNW_ESUCCESS) { + _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): __unw_step " "failed => _URC_END_OF_STACK", (void *)exception_object); return _URC_FATAL_PHASE2_ERROR; } // When tracing, print state information. if (_LIBUNWIND_TRACING_UNWINDING) { char functionBuf[512]; const char *functionName = functionBuf; unw_word_t offset; - if ((unw_get_proc_name(cursor, functionBuf, sizeof(functionBuf), - &offset) != UNW_ESUCCESS) || + if ((__unw_get_proc_name(cursor, functionBuf, sizeof(functionBuf), + &offset) != UNW_ESUCCESS) || (frameInfo.start_ip + offset > frameInfo.end_ip)) functionName = ".anonymous."; _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2_forced(ex_ojb=%p): start_ip=0x%" PRIxPTR ", func=%s, lsda=0x%" PRIxPTR ", personality=0x%" PRIxPTR, (void *)exception_object, frameInfo.start_ip, functionName, frameInfo.lsda, frameInfo.handler); } // Call stop function at each frame. _Unwind_Action action = (_Unwind_Action)(_UA_FORCE_UNWIND | _UA_CLEANUP_PHASE); _Unwind_Reason_Code stopResult = (*stop)(1, action, exception_object->exception_class, exception_object, (struct _Unwind_Context *)(cursor), stop_parameter); _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2_forced(ex_ojb=%p): stop function returned %d", (void *)exception_object, stopResult); if (stopResult != _URC_NO_REASON) { _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2_forced(ex_ojb=%p): stopped by stop function", (void *)exception_object); return _URC_FATAL_PHASE2_ERROR; } // If there is a personality routine, tell it we are unwinding. if (frameInfo.handler != 0) { __personality_routine p = (__personality_routine)(intptr_t)(frameInfo.handler); _LIBUNWIND_TRACE_UNWINDING( "unwind_phase2_forced(ex_ojb=%p): calling personality function %p", (void *)exception_object, (void *)(uintptr_t)p); _Unwind_Reason_Code personalityResult = (*p)(1, action, exception_object->exception_class, exception_object, (struct _Unwind_Context *)(cursor)); switch (personalityResult) { case _URC_CONTINUE_UNWIND: _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): " "personality returned " "_URC_CONTINUE_UNWIND", (void *)exception_object); // Destructors called, continue unwinding break; case _URC_INSTALL_CONTEXT: _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): " "personality returned " "_URC_INSTALL_CONTEXT", (void *)exception_object); // We may get control back if landing pad calls _Unwind_Resume(). - unw_resume(cursor); + __unw_resume(cursor); break; default: // Personality routine returned an unknown result code. _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): " "personality returned %d, " "_URC_FATAL_PHASE2_ERROR", (void *)exception_object, personalityResult); return _URC_FATAL_PHASE2_ERROR; } } } // Call stop function one last time and tell it we've reached the end // of the stack. _LIBUNWIND_TRACE_UNWINDING("unwind_phase2_forced(ex_ojb=%p): calling stop " "function with _UA_END_OF_STACK", (void *)exception_object); _Unwind_Action lastAction = (_Unwind_Action)(_UA_FORCE_UNWIND | _UA_CLEANUP_PHASE | _UA_END_OF_STACK); (*stop)(1, lastAction, exception_object->exception_class, exception_object, (struct _Unwind_Context *)(cursor), stop_parameter); // Clean up phase did not resume at the frame that the search phase said it // would. return _URC_FATAL_PHASE2_ERROR; } /// Called by __cxa_throw. Only returns if there is a fatal error. _LIBUNWIND_EXPORT _Unwind_Reason_Code _Unwind_RaiseException(_Unwind_Exception *exception_object) { _LIBUNWIND_TRACE_API("_Unwind_RaiseException(ex_obj=%p)", (void *)exception_object); unw_context_t uc; unw_cursor_t cursor; - unw_getcontext(&uc); + __unw_getcontext(&uc); // Mark that this is a non-forced unwind, so _Unwind_Resume() // can do the right thing. exception_object->private_1 = 0; exception_object->private_2 = 0; // phase 1: the search phase _Unwind_Reason_Code phase1 = unwind_phase1(&uc, &cursor, exception_object); if (phase1 != _URC_NO_REASON) return phase1; // phase 2: the clean up phase return unwind_phase2(&uc, &cursor, exception_object); } /// When _Unwind_RaiseException() is in phase2, it hands control /// to the personality function at each frame. The personality /// may force a jump to a landing pad in that function, the landing /// pad code may then call _Unwind_Resume() to continue with the /// unwinding. Note: the call to _Unwind_Resume() is from compiler /// geneated user code. All other _Unwind_* routines are called /// by the C++ runtime __cxa_* routines. /// /// Note: re-throwing an exception (as opposed to continuing the unwind) /// is implemented by having the code call __cxa_rethrow() which /// in turn calls _Unwind_Resume_or_Rethrow(). _LIBUNWIND_EXPORT void _Unwind_Resume(_Unwind_Exception *exception_object) { _LIBUNWIND_TRACE_API("_Unwind_Resume(ex_obj=%p)", (void *)exception_object); unw_context_t uc; unw_cursor_t cursor; - unw_getcontext(&uc); + __unw_getcontext(&uc); if (exception_object->private_1 != 0) unwind_phase2_forced(&uc, &cursor, exception_object, (_Unwind_Stop_Fn) exception_object->private_1, (void *)exception_object->private_2); else unwind_phase2(&uc, &cursor, exception_object); // Clients assume _Unwind_Resume() does not return, so all we can do is abort. _LIBUNWIND_ABORT("_Unwind_Resume() can't return"); } /// Not used by C++. /// Unwinds stack, calling "stop" function at each frame. /// Could be used to implement longjmp(). _LIBUNWIND_EXPORT _Unwind_Reason_Code _Unwind_ForcedUnwind(_Unwind_Exception *exception_object, _Unwind_Stop_Fn stop, void *stop_parameter) { _LIBUNWIND_TRACE_API("_Unwind_ForcedUnwind(ex_obj=%p, stop=%p)", (void *)exception_object, (void *)(uintptr_t)stop); unw_context_t uc; unw_cursor_t cursor; - unw_getcontext(&uc); + __unw_getcontext(&uc); // Mark that this is a forced unwind, so _Unwind_Resume() can do // the right thing. exception_object->private_1 = (uintptr_t) stop; exception_object->private_2 = (uintptr_t) stop_parameter; // do it return unwind_phase2_forced(&uc, &cursor, exception_object, stop, stop_parameter); } /// Called by personality handler during phase 2 to get LSDA for current frame. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetLanguageSpecificData(struct _Unwind_Context *context) { unw_cursor_t *cursor = (unw_cursor_t *)context; unw_proc_info_t frameInfo; uintptr_t result = 0; - if (unw_get_proc_info(cursor, &frameInfo) == UNW_ESUCCESS) + if (__unw_get_proc_info(cursor, &frameInfo) == UNW_ESUCCESS) result = (uintptr_t)frameInfo.lsda; _LIBUNWIND_TRACE_API( "_Unwind_GetLanguageSpecificData(context=%p) => 0x%" PRIxPTR, (void *)context, result); if (result != 0) { if (*((uint8_t *)result) != 0xFF) _LIBUNWIND_DEBUG_LOG("lsda at 0x%" PRIxPTR " does not start with 0xFF", result); } return result; } /// Called by personality handler during phase 2 to find the start of the /// function. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetRegionStart(struct _Unwind_Context *context) { unw_cursor_t *cursor = (unw_cursor_t *)context; unw_proc_info_t frameInfo; uintptr_t result = 0; - if (unw_get_proc_info(cursor, &frameInfo) == UNW_ESUCCESS) + if (__unw_get_proc_info(cursor, &frameInfo) == UNW_ESUCCESS) result = (uintptr_t)frameInfo.start_ip; _LIBUNWIND_TRACE_API("_Unwind_GetRegionStart(context=%p) => 0x%" PRIxPTR, (void *)context, result); return result; } #endif // !_LIBUNWIND_SUPPORT_SEH_UNWIND /// Called by personality handler during phase 2 if a foreign exception // is caught. _LIBUNWIND_EXPORT void _Unwind_DeleteException(_Unwind_Exception *exception_object) { _LIBUNWIND_TRACE_API("_Unwind_DeleteException(ex_obj=%p)", (void *)exception_object); if (exception_object->exception_cleanup != NULL) (*exception_object->exception_cleanup)(_URC_FOREIGN_EXCEPTION_CAUGHT, exception_object); } /// Called by personality handler during phase 2 to get register values. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetGR(struct _Unwind_Context *context, int index) { unw_cursor_t *cursor = (unw_cursor_t *)context; unw_word_t result; - unw_get_reg(cursor, index, &result); + __unw_get_reg(cursor, index, &result); _LIBUNWIND_TRACE_API("_Unwind_GetGR(context=%p, reg=%d) => 0x%" PRIxPTR, (void *)context, index, result); return (uintptr_t)result; } /// Called by personality handler during phase 2 to alter register values. _LIBUNWIND_EXPORT void _Unwind_SetGR(struct _Unwind_Context *context, int index, uintptr_t value) { _LIBUNWIND_TRACE_API("_Unwind_SetGR(context=%p, reg=%d, value=0x%0" PRIxPTR ")", (void *)context, index, value); unw_cursor_t *cursor = (unw_cursor_t *)context; - unw_set_reg(cursor, index, value); + __unw_set_reg(cursor, index, value); } /// Called by personality handler during phase 2 to get instruction pointer. _LIBUNWIND_EXPORT uintptr_t _Unwind_GetIP(struct _Unwind_Context *context) { unw_cursor_t *cursor = (unw_cursor_t *)context; unw_word_t result; - unw_get_reg(cursor, UNW_REG_IP, &result); + __unw_get_reg(cursor, UNW_REG_IP, &result); _LIBUNWIND_TRACE_API("_Unwind_GetIP(context=%p) => 0x%" PRIxPTR, (void *)context, result); return (uintptr_t)result; } /// Called by personality handler during phase 2 to alter instruction pointer, /// such as setting where the landing pad is, so _Unwind_Resume() will /// start executing in the landing pad. _LIBUNWIND_EXPORT void _Unwind_SetIP(struct _Unwind_Context *context, uintptr_t value) { _LIBUNWIND_TRACE_API("_Unwind_SetIP(context=%p, value=0x%0" PRIxPTR ")", (void *)context, value); unw_cursor_t *cursor = (unw_cursor_t *)context; - unw_set_reg(cursor, UNW_REG_IP, value); + __unw_set_reg(cursor, UNW_REG_IP, value); } #endif // !defined(_LIBUNWIND_ARM_EHABI) && !defined(__USING_SJLJ_EXCEPTIONS__) Index: projects/clang900-import/contrib/libunwind/src/UnwindRegistersRestore.S =================================================================== --- projects/clang900-import/contrib/libunwind/src/UnwindRegistersRestore.S (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/UnwindRegistersRestore.S (revision 351404) @@ -1,1111 +1,1118 @@ //===-------------------- UnwindRegistersRestore.S ------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. -// //===----------------------------------------------------------------------===// #include "assembly.h" .text #if !defined(__USING_SJLJ_EXCEPTIONS__) #if defined(__i386__) -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind13Registers_x866jumptoEv) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_x866jumptoEv) # # void libunwind::Registers_x86::jumpto() # #if defined(_WIN32) # On windows, the 'this' pointer is passed in ecx instead of on the stack movl %ecx, %eax #else # On entry: # + + # +-----------------------+ # + thread_state pointer + # +-----------------------+ # + return address + # +-----------------------+ <-- SP # + + movl 4(%esp), %eax #endif # set up eax and ret on new stack location movl 28(%eax), %edx # edx holds new stack pointer subl $8,%edx movl %edx, 28(%eax) movl 0(%eax), %ebx movl %ebx, 0(%edx) movl 40(%eax), %ebx movl %ebx, 4(%edx) # we now have ret and eax pushed onto where new stack will be # restore all registers movl 4(%eax), %ebx movl 8(%eax), %ecx movl 12(%eax), %edx movl 16(%eax), %edi movl 20(%eax), %esi movl 24(%eax), %ebp movl 28(%eax), %esp # skip ss # skip eflags pop %eax # eax was already pushed on new stack ret # eip was already pushed on new stack # skip cs # skip ds # skip es # skip fs # skip gs #elif defined(__x86_64__) -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind16Registers_x86_646jumptoEv) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind16Registers_x86_646jumptoEv) # # void libunwind::Registers_x86_64::jumpto() # #if defined(_WIN64) # On entry, thread_state pointer is in rcx; move it into rdi # to share restore code below. Since this routine restores and # overwrites all registers, we can use the same registers for # pointers and temporaries as on unix even though win64 normally # mustn't clobber some of them. movq %rcx, %rdi #else # On entry, thread_state pointer is in rdi #endif movq 56(%rdi), %rax # rax holds new stack pointer subq $16, %rax movq %rax, 56(%rdi) movq 32(%rdi), %rbx # store new rdi on new stack movq %rbx, 0(%rax) movq 128(%rdi), %rbx # store new rip on new stack movq %rbx, 8(%rax) # restore all registers movq 0(%rdi), %rax movq 8(%rdi), %rbx movq 16(%rdi), %rcx movq 24(%rdi), %rdx # restore rdi later movq 40(%rdi), %rsi movq 48(%rdi), %rbp # restore rsp later movq 64(%rdi), %r8 movq 72(%rdi), %r9 movq 80(%rdi), %r10 movq 88(%rdi), %r11 movq 96(%rdi), %r12 movq 104(%rdi), %r13 movq 112(%rdi), %r14 movq 120(%rdi), %r15 # skip rflags # skip cs # skip fs # skip gs #if defined(_WIN64) movdqu 176(%rdi),%xmm0 movdqu 192(%rdi),%xmm1 movdqu 208(%rdi),%xmm2 movdqu 224(%rdi),%xmm3 movdqu 240(%rdi),%xmm4 movdqu 256(%rdi),%xmm5 movdqu 272(%rdi),%xmm6 movdqu 288(%rdi),%xmm7 movdqu 304(%rdi),%xmm8 movdqu 320(%rdi),%xmm9 movdqu 336(%rdi),%xmm10 movdqu 352(%rdi),%xmm11 movdqu 368(%rdi),%xmm12 movdqu 384(%rdi),%xmm13 movdqu 400(%rdi),%xmm14 movdqu 416(%rdi),%xmm15 #endif movq 56(%rdi), %rsp # cut back rsp to new location pop %rdi # rdi was saved here earlier ret # rip was saved here #elif defined(__powerpc64__) -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind15Registers_ppc646jumptoEv) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind15Registers_ppc646jumptoEv) // // void libunwind::Registers_ppc64::jumpto() // // On entry: // thread_state pointer is in r3 // // load register (GPR) #define PPC64_LR(n) \ ld %r##n, (8 * (n + 2))(%r3) // restore integral registers // skip r0 for now // skip r1 for now PPC64_LR(2) // skip r3 for now // skip r4 for now // skip r5 for now PPC64_LR(6) PPC64_LR(7) PPC64_LR(8) PPC64_LR(9) PPC64_LR(10) PPC64_LR(11) PPC64_LR(12) PPC64_LR(13) PPC64_LR(14) PPC64_LR(15) PPC64_LR(16) PPC64_LR(17) PPC64_LR(18) PPC64_LR(19) PPC64_LR(20) PPC64_LR(21) PPC64_LR(22) PPC64_LR(23) PPC64_LR(24) PPC64_LR(25) PPC64_LR(26) PPC64_LR(27) PPC64_LR(28) PPC64_LR(29) PPC64_LR(30) PPC64_LR(31) #ifdef PPC64_HAS_VMX // restore VS registers // (note that this also restores floating point registers and V registers, // because part of VS is mapped to these registers) addi %r4, %r3, PPC64_OFFS_FP // load VS register #define PPC64_LVS(n) \ lxvd2x %vs##n, 0, %r4 ;\ addi %r4, %r4, 16 // restore the first 32 VS regs (and also all floating point regs) PPC64_LVS(0) PPC64_LVS(1) PPC64_LVS(2) PPC64_LVS(3) PPC64_LVS(4) PPC64_LVS(5) PPC64_LVS(6) PPC64_LVS(7) PPC64_LVS(8) PPC64_LVS(9) PPC64_LVS(10) PPC64_LVS(11) PPC64_LVS(12) PPC64_LVS(13) PPC64_LVS(14) PPC64_LVS(15) PPC64_LVS(16) PPC64_LVS(17) PPC64_LVS(18) PPC64_LVS(19) PPC64_LVS(20) PPC64_LVS(21) PPC64_LVS(22) PPC64_LVS(23) PPC64_LVS(24) PPC64_LVS(25) PPC64_LVS(26) PPC64_LVS(27) PPC64_LVS(28) PPC64_LVS(29) PPC64_LVS(30) PPC64_LVS(31) // use VRSAVE to conditionally restore the remaining VS regs, // that are where the V regs are mapped ld %r5, PPC64_OFFS_VRSAVE(%r3) // test VRsave cmpwi %r5, 0 beq Lnovec // conditionally load VS #define PPC64_CLVS_BOTTOM(n) \ beq Ldone##n ;\ addi %r4, %r3, PPC64_OFFS_FP + n * 16 ;\ lxvd2x %vs##n, 0, %r4 ;\ Ldone##n: #define PPC64_CLVSl(n) \ andis. %r0, %r5, (1<<(47-n)) ;\ PPC64_CLVS_BOTTOM(n) #define PPC64_CLVSh(n) \ andi. %r0, %r5, (1<<(63-n)) ;\ PPC64_CLVS_BOTTOM(n) PPC64_CLVSl(32) PPC64_CLVSl(33) PPC64_CLVSl(34) PPC64_CLVSl(35) PPC64_CLVSl(36) PPC64_CLVSl(37) PPC64_CLVSl(38) PPC64_CLVSl(39) PPC64_CLVSl(40) PPC64_CLVSl(41) PPC64_CLVSl(42) PPC64_CLVSl(43) PPC64_CLVSl(44) PPC64_CLVSl(45) PPC64_CLVSl(46) PPC64_CLVSl(47) PPC64_CLVSh(48) PPC64_CLVSh(49) PPC64_CLVSh(50) PPC64_CLVSh(51) PPC64_CLVSh(52) PPC64_CLVSh(53) PPC64_CLVSh(54) PPC64_CLVSh(55) PPC64_CLVSh(56) PPC64_CLVSh(57) PPC64_CLVSh(58) PPC64_CLVSh(59) PPC64_CLVSh(60) PPC64_CLVSh(61) PPC64_CLVSh(62) PPC64_CLVSh(63) #else // load FP register #define PPC64_LF(n) \ lfd %f##n, (PPC64_OFFS_FP + n * 16)(%r3) // restore float registers PPC64_LF(0) PPC64_LF(1) PPC64_LF(2) PPC64_LF(3) PPC64_LF(4) PPC64_LF(5) PPC64_LF(6) PPC64_LF(7) PPC64_LF(8) PPC64_LF(9) PPC64_LF(10) PPC64_LF(11) PPC64_LF(12) PPC64_LF(13) PPC64_LF(14) PPC64_LF(15) PPC64_LF(16) PPC64_LF(17) PPC64_LF(18) PPC64_LF(19) PPC64_LF(20) PPC64_LF(21) PPC64_LF(22) PPC64_LF(23) PPC64_LF(24) PPC64_LF(25) PPC64_LF(26) PPC64_LF(27) PPC64_LF(28) PPC64_LF(29) PPC64_LF(30) PPC64_LF(31) // restore vector registers if any are in use ld %r5, PPC64_OFFS_VRSAVE(%r3) // test VRsave cmpwi %r5, 0 beq Lnovec subi %r4, %r1, 16 // r4 is now a 16-byte aligned pointer into the red zone // the _vectorScalarRegisters may not be 16-byte aligned // so copy via red zone temp buffer #define PPC64_CLV_UNALIGNED_BOTTOM(n) \ beq Ldone##n ;\ ld %r0, (PPC64_OFFS_V + n * 16)(%r3) ;\ std %r0, 0(%r4) ;\ ld %r0, (PPC64_OFFS_V + n * 16 + 8)(%r3) ;\ std %r0, 8(%r4) ;\ lvx %v##n, 0, %r4 ;\ Ldone ## n: #define PPC64_CLV_UNALIGNEDl(n) \ andis. %r0, %r5, (1<<(15-n)) ;\ PPC64_CLV_UNALIGNED_BOTTOM(n) #define PPC64_CLV_UNALIGNEDh(n) \ andi. %r0, %r5, (1<<(31-n)) ;\ PPC64_CLV_UNALIGNED_BOTTOM(n) PPC64_CLV_UNALIGNEDl(0) PPC64_CLV_UNALIGNEDl(1) PPC64_CLV_UNALIGNEDl(2) PPC64_CLV_UNALIGNEDl(3) PPC64_CLV_UNALIGNEDl(4) PPC64_CLV_UNALIGNEDl(5) PPC64_CLV_UNALIGNEDl(6) PPC64_CLV_UNALIGNEDl(7) PPC64_CLV_UNALIGNEDl(8) PPC64_CLV_UNALIGNEDl(9) PPC64_CLV_UNALIGNEDl(10) PPC64_CLV_UNALIGNEDl(11) PPC64_CLV_UNALIGNEDl(12) PPC64_CLV_UNALIGNEDl(13) PPC64_CLV_UNALIGNEDl(14) PPC64_CLV_UNALIGNEDl(15) PPC64_CLV_UNALIGNEDh(16) PPC64_CLV_UNALIGNEDh(17) PPC64_CLV_UNALIGNEDh(18) PPC64_CLV_UNALIGNEDh(19) PPC64_CLV_UNALIGNEDh(20) PPC64_CLV_UNALIGNEDh(21) PPC64_CLV_UNALIGNEDh(22) PPC64_CLV_UNALIGNEDh(23) PPC64_CLV_UNALIGNEDh(24) PPC64_CLV_UNALIGNEDh(25) PPC64_CLV_UNALIGNEDh(26) PPC64_CLV_UNALIGNEDh(27) PPC64_CLV_UNALIGNEDh(28) PPC64_CLV_UNALIGNEDh(29) PPC64_CLV_UNALIGNEDh(30) PPC64_CLV_UNALIGNEDh(31) #endif Lnovec: ld %r0, PPC64_OFFS_CR(%r3) mtcr %r0 ld %r0, PPC64_OFFS_SRR0(%r3) mtctr %r0 PPC64_LR(0) PPC64_LR(5) PPC64_LR(4) PPC64_LR(1) PPC64_LR(3) bctr #elif defined(__ppc__) -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind13Registers_ppc6jumptoEv) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_ppc6jumptoEv) // // void libunwind::Registers_ppc::jumpto() // // On entry: // thread_state pointer is in r3 // // restore integral registerrs // skip r0 for now // skip r1 for now lwz %r2, 16(%r3) // skip r3 for now // skip r4 for now // skip r5 for now lwz %r6, 32(%r3) lwz %r7, 36(%r3) lwz %r8, 40(%r3) lwz %r9, 44(%r3) lwz %r10, 48(%r3) lwz %r11, 52(%r3) lwz %r12, 56(%r3) lwz %r13, 60(%r3) lwz %r14, 64(%r3) lwz %r15, 68(%r3) lwz %r16, 72(%r3) lwz %r17, 76(%r3) lwz %r18, 80(%r3) lwz %r19, 84(%r3) lwz %r20, 88(%r3) lwz %r21, 92(%r3) lwz %r22, 96(%r3) lwz %r23,100(%r3) lwz %r24,104(%r3) lwz %r25,108(%r3) lwz %r26,112(%r3) lwz %r27,116(%r3) lwz %r28,120(%r3) lwz %r29,124(%r3) lwz %r30,128(%r3) lwz %r31,132(%r3) // restore float registers lfd %f0, 160(%r3) lfd %f1, 168(%r3) lfd %f2, 176(%r3) lfd %f3, 184(%r3) lfd %f4, 192(%r3) lfd %f5, 200(%r3) lfd %f6, 208(%r3) lfd %f7, 216(%r3) lfd %f8, 224(%r3) lfd %f9, 232(%r3) lfd %f10,240(%r3) lfd %f11,248(%r3) lfd %f12,256(%r3) lfd %f13,264(%r3) lfd %f14,272(%r3) lfd %f15,280(%r3) lfd %f16,288(%r3) lfd %f17,296(%r3) lfd %f18,304(%r3) lfd %f19,312(%r3) lfd %f20,320(%r3) lfd %f21,328(%r3) lfd %f22,336(%r3) lfd %f23,344(%r3) lfd %f24,352(%r3) lfd %f25,360(%r3) lfd %f26,368(%r3) lfd %f27,376(%r3) lfd %f28,384(%r3) lfd %f29,392(%r3) lfd %f30,400(%r3) lfd %f31,408(%r3) // restore vector registers if any are in use lwz %r5, 156(%r3) // test VRsave cmpwi %r5, 0 beq Lnovec subi %r4, %r1, 16 rlwinm %r4, %r4, 0, 0, 27 // mask low 4-bits // r4 is now a 16-byte aligned pointer into the red zone // the _vectorRegisters may not be 16-byte aligned so copy via red zone temp buffer #define LOAD_VECTOR_UNALIGNEDl(_index) \ andis. %r0, %r5, (1<<(15-_index)) SEPARATOR \ beq Ldone ## _index SEPARATOR \ lwz %r0, 424+_index*16(%r3) SEPARATOR \ stw %r0, 0(%r4) SEPARATOR \ lwz %r0, 424+_index*16+4(%r3) SEPARATOR \ stw %r0, 4(%r4) SEPARATOR \ lwz %r0, 424+_index*16+8(%r3) SEPARATOR \ stw %r0, 8(%r4) SEPARATOR \ lwz %r0, 424+_index*16+12(%r3) SEPARATOR \ stw %r0, 12(%r4) SEPARATOR \ lvx %v ## _index, 0, %r4 SEPARATOR \ Ldone ## _index: #define LOAD_VECTOR_UNALIGNEDh(_index) \ andi. %r0, %r5, (1<<(31-_index)) SEPARATOR \ beq Ldone ## _index SEPARATOR \ lwz %r0, 424+_index*16(%r3) SEPARATOR \ stw %r0, 0(%r4) SEPARATOR \ lwz %r0, 424+_index*16+4(%r3) SEPARATOR \ stw %r0, 4(%r4) SEPARATOR \ lwz %r0, 424+_index*16+8(%r3) SEPARATOR \ stw %r0, 8(%r4) SEPARATOR \ lwz %r0, 424+_index*16+12(%r3) SEPARATOR \ stw %r0, 12(%r4) SEPARATOR \ lvx %v ## _index, 0, %r4 SEPARATOR \ Ldone ## _index: LOAD_VECTOR_UNALIGNEDl(0) LOAD_VECTOR_UNALIGNEDl(1) LOAD_VECTOR_UNALIGNEDl(2) LOAD_VECTOR_UNALIGNEDl(3) LOAD_VECTOR_UNALIGNEDl(4) LOAD_VECTOR_UNALIGNEDl(5) LOAD_VECTOR_UNALIGNEDl(6) LOAD_VECTOR_UNALIGNEDl(7) LOAD_VECTOR_UNALIGNEDl(8) LOAD_VECTOR_UNALIGNEDl(9) LOAD_VECTOR_UNALIGNEDl(10) LOAD_VECTOR_UNALIGNEDl(11) LOAD_VECTOR_UNALIGNEDl(12) LOAD_VECTOR_UNALIGNEDl(13) LOAD_VECTOR_UNALIGNEDl(14) LOAD_VECTOR_UNALIGNEDl(15) LOAD_VECTOR_UNALIGNEDh(16) LOAD_VECTOR_UNALIGNEDh(17) LOAD_VECTOR_UNALIGNEDh(18) LOAD_VECTOR_UNALIGNEDh(19) LOAD_VECTOR_UNALIGNEDh(20) LOAD_VECTOR_UNALIGNEDh(21) LOAD_VECTOR_UNALIGNEDh(22) LOAD_VECTOR_UNALIGNEDh(23) LOAD_VECTOR_UNALIGNEDh(24) LOAD_VECTOR_UNALIGNEDh(25) LOAD_VECTOR_UNALIGNEDh(26) LOAD_VECTOR_UNALIGNEDh(27) LOAD_VECTOR_UNALIGNEDh(28) LOAD_VECTOR_UNALIGNEDh(29) LOAD_VECTOR_UNALIGNEDh(30) LOAD_VECTOR_UNALIGNEDh(31) Lnovec: lwz %r0, 136(%r3) // __cr mtcr %r0 lwz %r0, 148(%r3) // __ctr mtctr %r0 lwz %r0, 0(%r3) // __ssr0 mtctr %r0 lwz %r0, 8(%r3) // do r0 now lwz %r5, 28(%r3) // do r5 now lwz %r4, 24(%r3) // do r4 now lwz %r1, 12(%r3) // do sp now lwz %r3, 20(%r3) // do r3 last bctr #elif defined(__arm64__) || defined(__aarch64__) // // void libunwind::Registers_arm64::jumpto() // // On entry: // thread_state pointer is in x0 // .p2align 2 -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind15Registers_arm646jumptoEv) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind15Registers_arm646jumptoEv) // skip restore of x0,x1 for now ldp x2, x3, [x0, #0x010] ldp x4, x5, [x0, #0x020] ldp x6, x7, [x0, #0x030] ldp x8, x9, [x0, #0x040] ldp x10,x11, [x0, #0x050] ldp x12,x13, [x0, #0x060] ldp x14,x15, [x0, #0x070] - ldp x16,x17, [x0, #0x080] + // x16 and x17 were clobbered by the call into the unwinder, so no point in + // restoring them. ldp x18,x19, [x0, #0x090] ldp x20,x21, [x0, #0x0A0] ldp x22,x23, [x0, #0x0B0] ldp x24,x25, [x0, #0x0C0] ldp x26,x27, [x0, #0x0D0] ldp x28,x29, [x0, #0x0E0] ldr x30, [x0, #0x100] // restore pc into lr - ldr x1, [x0, #0x0F8] - mov sp,x1 // restore sp ldp d0, d1, [x0, #0x110] ldp d2, d3, [x0, #0x120] ldp d4, d5, [x0, #0x130] ldp d6, d7, [x0, #0x140] ldp d8, d9, [x0, #0x150] ldp d10,d11, [x0, #0x160] ldp d12,d13, [x0, #0x170] ldp d14,d15, [x0, #0x180] ldp d16,d17, [x0, #0x190] ldp d18,d19, [x0, #0x1A0] ldp d20,d21, [x0, #0x1B0] ldp d22,d23, [x0, #0x1C0] ldp d24,d25, [x0, #0x1D0] ldp d26,d27, [x0, #0x1E0] ldp d28,d29, [x0, #0x1F0] ldr d30, [x0, #0x200] ldr d31, [x0, #0x208] + // Finally, restore sp. This must be done after the the last read from the + // context struct, because it is allocated on the stack, and an exception + // could clobber the de-allocated portion of the stack after sp has been + // restored. + ldr x16, [x0, #0x0F8] ldp x0, x1, [x0, #0x000] // restore x0,x1 + mov sp,x16 // restore sp ret x30 // jump to pc #elif defined(__arm__) && !defined(__APPLE__) #if !defined(__ARM_ARCH_ISA_ARM) +#if (__ARM_ARCH_ISA_THUMB == 2) + .syntax unified +#endif .thumb #endif @ @ void libunwind::Registers_arm::restoreCoreAndJumpTo() @ @ On entry: @ thread_state pointer is in r0 @ .p2align 2 -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind13Registers_arm20restoreCoreAndJumpToEv) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm20restoreCoreAndJumpToEv) #if !defined(__ARM_ARCH_ISA_ARM) && __ARM_ARCH_ISA_THUMB == 1 @ r8-r11: ldm into r1-r4, then mov to r8-r11 adds r0, #0x20 ldm r0!, {r1-r4} subs r0, #0x30 mov r8, r1 mov r9, r2 mov r10, r3 mov r11, r4 @ r12 does not need loading, it it the intra-procedure-call scratch register ldr r2, [r0, #0x34] ldr r3, [r0, #0x3c] mov sp, r2 mov lr, r3 @ restore pc into lr ldm r0, {r0-r7} #else @ Use lr as base so that r0 can be restored. mov lr, r0 @ 32bit thumb-2 restrictions for ldm: @ . the sp (r13) cannot be in the list @ . the pc (r15) and lr (r14) cannot both be in the list in an LDM instruction ldm lr, {r0-r12} ldr sp, [lr, #52] ldr lr, [lr, #60] @ restore pc into lr #endif JMP(lr) @ @ static void libunwind::Registers_arm::restoreVFPWithFLDMD(unw_fpreg_t* values) @ @ On entry: @ values pointer is in r0 @ .p2align 2 #if defined(__ELF__) .fpu vfpv3-d16 #endif -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind13Registers_arm19restoreVFPWithFLDMDEPy) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm19restoreVFPWithFLDMDEPv) @ VFP and iwMMX instructions are only available when compiling with the flags @ that enable them. We do not want to do that in the library (because we do not @ want the compiler to generate instructions that access those) but this is @ only accessed if the personality routine needs these registers. Use of @ these registers implies they are, actually, available on the target, so @ it's ok to execute. @ So, generate the instruction using the corresponding coprocessor mnemonic. vldmia r0, {d0-d15} JMP(lr) @ @ static void libunwind::Registers_arm::restoreVFPWithFLDMX(unw_fpreg_t* values) @ @ On entry: @ values pointer is in r0 @ .p2align 2 #if defined(__ELF__) .fpu vfpv3-d16 #endif -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind13Registers_arm19restoreVFPWithFLDMXEPy) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm19restoreVFPWithFLDMXEPv) vldmia r0, {d0-d15} @ fldmiax is deprecated in ARMv7+ and now behaves like vldmia JMP(lr) @ @ static void libunwind::Registers_arm::restoreVFPv3(unw_fpreg_t* values) @ @ On entry: @ values pointer is in r0 @ .p2align 2 #if defined(__ELF__) .fpu vfpv3 #endif -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind13Registers_arm12restoreVFPv3EPy) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm12restoreVFPv3EPv) vldmia r0, {d16-d31} JMP(lr) #if defined(__ARM_WMMX) @ @ static void libunwind::Registers_arm::restoreiWMMX(unw_fpreg_t* values) @ @ On entry: @ values pointer is in r0 @ .p2align 2 #if defined(__ELF__) .arch armv5te #endif -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind13Registers_arm12restoreiWMMXEPy) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm12restoreiWMMXEPv) ldcl p1, cr0, [r0], #8 @ wldrd wR0, [r0], #8 ldcl p1, cr1, [r0], #8 @ wldrd wR1, [r0], #8 ldcl p1, cr2, [r0], #8 @ wldrd wR2, [r0], #8 ldcl p1, cr3, [r0], #8 @ wldrd wR3, [r0], #8 ldcl p1, cr4, [r0], #8 @ wldrd wR4, [r0], #8 ldcl p1, cr5, [r0], #8 @ wldrd wR5, [r0], #8 ldcl p1, cr6, [r0], #8 @ wldrd wR6, [r0], #8 ldcl p1, cr7, [r0], #8 @ wldrd wR7, [r0], #8 ldcl p1, cr8, [r0], #8 @ wldrd wR8, [r0], #8 ldcl p1, cr9, [r0], #8 @ wldrd wR9, [r0], #8 ldcl p1, cr10, [r0], #8 @ wldrd wR10, [r0], #8 ldcl p1, cr11, [r0], #8 @ wldrd wR11, [r0], #8 ldcl p1, cr12, [r0], #8 @ wldrd wR12, [r0], #8 ldcl p1, cr13, [r0], #8 @ wldrd wR13, [r0], #8 ldcl p1, cr14, [r0], #8 @ wldrd wR14, [r0], #8 ldcl p1, cr15, [r0], #8 @ wldrd wR15, [r0], #8 JMP(lr) @ @ static void libunwind::Registers_arm::restoreiWMMXControl(unw_uint32_t* values) @ @ On entry: @ values pointer is in r0 @ .p2align 2 #if defined(__ELF__) .arch armv5te #endif -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind13Registers_arm19restoreiWMMXControlEPj) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm19restoreiWMMXControlEPj) ldc2 p1, cr8, [r0], #4 @ wldrw wCGR0, [r0], #4 ldc2 p1, cr9, [r0], #4 @ wldrw wCGR1, [r0], #4 ldc2 p1, cr10, [r0], #4 @ wldrw wCGR2, [r0], #4 ldc2 p1, cr11, [r0], #4 @ wldrw wCGR3, [r0], #4 JMP(lr) #endif #elif defined(__or1k__) -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind14Registers_or1k6jumptoEv) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind14Registers_or1k6jumptoEv) # # void libunwind::Registers_or1k::jumpto() # # On entry: # thread_state pointer is in r3 # # restore integral registers l.lwz r0, 0(r3) l.lwz r1, 4(r3) l.lwz r2, 8(r3) # skip r3 for now l.lwz r4, 16(r3) l.lwz r5, 20(r3) l.lwz r6, 24(r3) l.lwz r7, 28(r3) l.lwz r8, 32(r3) # skip r9 l.lwz r10, 40(r3) l.lwz r11, 44(r3) l.lwz r12, 48(r3) l.lwz r13, 52(r3) l.lwz r14, 56(r3) l.lwz r15, 60(r3) l.lwz r16, 64(r3) l.lwz r17, 68(r3) l.lwz r18, 72(r3) l.lwz r19, 76(r3) l.lwz r20, 80(r3) l.lwz r21, 84(r3) l.lwz r22, 88(r3) l.lwz r23, 92(r3) l.lwz r24, 96(r3) l.lwz r25,100(r3) l.lwz r26,104(r3) l.lwz r27,108(r3) l.lwz r28,112(r3) l.lwz r29,116(r3) l.lwz r30,120(r3) l.lwz r31,124(r3) # at last, restore r3 l.lwz r3, 12(r3) # load new pc into ra l.lwz r9, 128(r3) # jump to pc l.jr r9 l.nop #elif defined(__riscv) // // void libunwind::Registers_riscv::jumpto() // // On entry: // thread_state pointer is in a0 // .p2align 2 DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind15Registers_riscv6jumptoEv) #ifdef __riscv_float_abi_double fld f0, (8 * 32 + 8 * 0)(a0) fld f1, (8 * 32 + 8 * 1)(a0) fld f2, (8 * 32 + 8 * 2)(a0) fld f3, (8 * 32 + 8 * 3)(a0) fld f4, (8 * 32 + 8 * 4)(a0) fld f5, (8 * 32 + 8 * 5)(a0) fld f6, (8 * 32 + 8 * 6)(a0) fld f7, (8 * 32 + 8 * 7)(a0) fld f8, (8 * 32 + 8 * 8)(a0) fld f9, (8 * 32 + 8 * 9)(a0) fld f10, (8 * 32 + 8 * 10)(a0) fld f11, (8 * 32 + 8 * 11)(a0) fld f12, (8 * 32 + 8 * 12)(a0) fld f13, (8 * 32 + 8 * 13)(a0) fld f14, (8 * 32 + 8 * 14)(a0) fld f15, (8 * 32 + 8 * 15)(a0) fld f16, (8 * 32 + 8 * 16)(a0) fld f17, (8 * 32 + 8 * 17)(a0) fld f18, (8 * 32 + 8 * 18)(a0) fld f19, (8 * 32 + 8 * 19)(a0) fld f20, (8 * 32 + 8 * 20)(a0) fld f21, (8 * 32 + 8 * 21)(a0) fld f22, (8 * 32 + 8 * 22)(a0) fld f23, (8 * 32 + 8 * 23)(a0) fld f24, (8 * 32 + 8 * 24)(a0) fld f25, (8 * 32 + 8 * 25)(a0) fld f26, (8 * 32 + 8 * 26)(a0) fld f27, (8 * 32 + 8 * 27)(a0) fld f28, (8 * 32 + 8 * 28)(a0) fld f29, (8 * 32 + 8 * 29)(a0) fld f30, (8 * 32 + 8 * 30)(a0) fld f31, (8 * 32 + 8 * 31)(a0) #endif // x0 is zero ld x1, (8 * 1)(a0) ld x2, (8 * 2)(a0) ld x3, (8 * 3)(a0) ld x4, (8 * 4)(a0) ld x5, (8 * 5)(a0) ld x6, (8 * 6)(a0) ld x7, (8 * 7)(a0) ld x8, (8 * 8)(a0) ld x9, (8 * 9)(a0) // skip a0 for now ld x11, (8 * 11)(a0) ld x12, (8 * 12)(a0) ld x13, (8 * 13)(a0) ld x14, (8 * 14)(a0) ld x15, (8 * 15)(a0) ld x16, (8 * 16)(a0) ld x17, (8 * 17)(a0) ld x18, (8 * 18)(a0) ld x19, (8 * 19)(a0) ld x20, (8 * 20)(a0) ld x21, (8 * 21)(a0) ld x22, (8 * 22)(a0) ld x23, (8 * 23)(a0) ld x24, (8 * 24)(a0) ld x25, (8 * 25)(a0) ld x26, (8 * 26)(a0) ld x27, (8 * 27)(a0) ld x28, (8 * 28)(a0) ld x29, (8 * 29)(a0) ld x30, (8 * 30)(a0) ld x31, (8 * 31)(a0) ld x10, (8 * 10)(a0) // restore a0 ret // jump to ra #elif defined(__mips__) && defined(_ABIO32) && _MIPS_SIM == _ABIO32 // // void libunwind::Registers_mips_o32::jumpto() // // On entry: // thread state pointer is in a0 ($4) // -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind18Registers_mips_o326jumptoEv) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind18Registers_mips_o326jumptoEv) .set push .set noat .set noreorder .set nomacro #ifdef __mips_hard_float #if __mips_fpr != 64 ldc1 $f0, (4 * 36 + 8 * 0)($4) ldc1 $f2, (4 * 36 + 8 * 2)($4) ldc1 $f4, (4 * 36 + 8 * 4)($4) ldc1 $f6, (4 * 36 + 8 * 6)($4) ldc1 $f8, (4 * 36 + 8 * 8)($4) ldc1 $f10, (4 * 36 + 8 * 10)($4) ldc1 $f12, (4 * 36 + 8 * 12)($4) ldc1 $f14, (4 * 36 + 8 * 14)($4) ldc1 $f16, (4 * 36 + 8 * 16)($4) ldc1 $f18, (4 * 36 + 8 * 18)($4) ldc1 $f20, (4 * 36 + 8 * 20)($4) ldc1 $f22, (4 * 36 + 8 * 22)($4) ldc1 $f24, (4 * 36 + 8 * 24)($4) ldc1 $f26, (4 * 36 + 8 * 26)($4) ldc1 $f28, (4 * 36 + 8 * 28)($4) ldc1 $f30, (4 * 36 + 8 * 30)($4) #else ldc1 $f0, (4 * 36 + 8 * 0)($4) ldc1 $f1, (4 * 36 + 8 * 1)($4) ldc1 $f2, (4 * 36 + 8 * 2)($4) ldc1 $f3, (4 * 36 + 8 * 3)($4) ldc1 $f4, (4 * 36 + 8 * 4)($4) ldc1 $f5, (4 * 36 + 8 * 5)($4) ldc1 $f6, (4 * 36 + 8 * 6)($4) ldc1 $f7, (4 * 36 + 8 * 7)($4) ldc1 $f8, (4 * 36 + 8 * 8)($4) ldc1 $f9, (4 * 36 + 8 * 9)($4) ldc1 $f10, (4 * 36 + 8 * 10)($4) ldc1 $f11, (4 * 36 + 8 * 11)($4) ldc1 $f12, (4 * 36 + 8 * 12)($4) ldc1 $f13, (4 * 36 + 8 * 13)($4) ldc1 $f14, (4 * 36 + 8 * 14)($4) ldc1 $f15, (4 * 36 + 8 * 15)($4) ldc1 $f16, (4 * 36 + 8 * 16)($4) ldc1 $f17, (4 * 36 + 8 * 17)($4) ldc1 $f18, (4 * 36 + 8 * 18)($4) ldc1 $f19, (4 * 36 + 8 * 19)($4) ldc1 $f20, (4 * 36 + 8 * 20)($4) ldc1 $f21, (4 * 36 + 8 * 21)($4) ldc1 $f22, (4 * 36 + 8 * 22)($4) ldc1 $f23, (4 * 36 + 8 * 23)($4) ldc1 $f24, (4 * 36 + 8 * 24)($4) ldc1 $f25, (4 * 36 + 8 * 25)($4) ldc1 $f26, (4 * 36 + 8 * 26)($4) ldc1 $f27, (4 * 36 + 8 * 27)($4) ldc1 $f28, (4 * 36 + 8 * 28)($4) ldc1 $f29, (4 * 36 + 8 * 29)($4) ldc1 $f30, (4 * 36 + 8 * 30)($4) ldc1 $f31, (4 * 36 + 8 * 31)($4) #endif #endif // restore hi and lo lw $8, (4 * 33)($4) mthi $8 lw $8, (4 * 34)($4) mtlo $8 // r0 is zero lw $1, (4 * 1)($4) lw $2, (4 * 2)($4) lw $3, (4 * 3)($4) // skip a0 for now lw $5, (4 * 5)($4) lw $6, (4 * 6)($4) lw $7, (4 * 7)($4) lw $8, (4 * 8)($4) lw $9, (4 * 9)($4) lw $10, (4 * 10)($4) lw $11, (4 * 11)($4) lw $12, (4 * 12)($4) lw $13, (4 * 13)($4) lw $14, (4 * 14)($4) lw $15, (4 * 15)($4) lw $16, (4 * 16)($4) lw $17, (4 * 17)($4) lw $18, (4 * 18)($4) lw $19, (4 * 19)($4) lw $20, (4 * 20)($4) lw $21, (4 * 21)($4) lw $22, (4 * 22)($4) lw $23, (4 * 23)($4) lw $24, (4 * 24)($4) lw $25, (4 * 25)($4) lw $26, (4 * 26)($4) lw $27, (4 * 27)($4) lw $28, (4 * 28)($4) lw $29, (4 * 29)($4) lw $30, (4 * 30)($4) // load new pc into ra lw $31, (4 * 32)($4) // jump to ra, load a0 in the delay slot jr $31 lw $4, (4 * 4)($4) .set pop #elif defined(__mips64) // // void libunwind::Registers_mips_newabi::jumpto() // // On entry: // thread state pointer is in a0 ($4) // -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind21Registers_mips_newabi6jumptoEv) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind21Registers_mips_newabi6jumptoEv) .set push .set noat .set noreorder .set nomacro #ifdef __mips_hard_float ldc1 $f0, (8 * 35)($4) ldc1 $f1, (8 * 36)($4) ldc1 $f2, (8 * 37)($4) ldc1 $f3, (8 * 38)($4) ldc1 $f4, (8 * 39)($4) ldc1 $f5, (8 * 40)($4) ldc1 $f6, (8 * 41)($4) ldc1 $f7, (8 * 42)($4) ldc1 $f8, (8 * 43)($4) ldc1 $f9, (8 * 44)($4) ldc1 $f10, (8 * 45)($4) ldc1 $f11, (8 * 46)($4) ldc1 $f12, (8 * 47)($4) ldc1 $f13, (8 * 48)($4) ldc1 $f14, (8 * 49)($4) ldc1 $f15, (8 * 50)($4) ldc1 $f16, (8 * 51)($4) ldc1 $f17, (8 * 52)($4) ldc1 $f18, (8 * 53)($4) ldc1 $f19, (8 * 54)($4) ldc1 $f20, (8 * 55)($4) ldc1 $f21, (8 * 56)($4) ldc1 $f22, (8 * 57)($4) ldc1 $f23, (8 * 58)($4) ldc1 $f24, (8 * 59)($4) ldc1 $f25, (8 * 60)($4) ldc1 $f26, (8 * 61)($4) ldc1 $f27, (8 * 62)($4) ldc1 $f28, (8 * 63)($4) ldc1 $f29, (8 * 64)($4) ldc1 $f30, (8 * 65)($4) ldc1 $f31, (8 * 66)($4) #endif // restore hi and lo ld $8, (8 * 33)($4) mthi $8 ld $8, (8 * 34)($4) mtlo $8 // r0 is zero ld $1, (8 * 1)($4) ld $2, (8 * 2)($4) ld $3, (8 * 3)($4) // skip a0 for now ld $5, (8 * 5)($4) ld $6, (8 * 6)($4) ld $7, (8 * 7)($4) ld $8, (8 * 8)($4) ld $9, (8 * 9)($4) ld $10, (8 * 10)($4) ld $11, (8 * 11)($4) ld $12, (8 * 12)($4) ld $13, (8 * 13)($4) ld $14, (8 * 14)($4) ld $15, (8 * 15)($4) ld $16, (8 * 16)($4) ld $17, (8 * 17)($4) ld $18, (8 * 18)($4) ld $19, (8 * 19)($4) ld $20, (8 * 20)($4) ld $21, (8 * 21)($4) ld $22, (8 * 22)($4) ld $23, (8 * 23)($4) ld $24, (8 * 24)($4) ld $25, (8 * 25)($4) ld $26, (8 * 26)($4) ld $27, (8 * 27)($4) ld $28, (8 * 28)($4) ld $29, (8 * 29)($4) ld $30, (8 * 30)($4) // load new pc into ra ld $31, (8 * 32)($4) // jump to ra, load a0 in the delay slot jr $31 ld $4, (8 * 4)($4) .set pop #elif defined(__sparc__) // // void libunwind::Registers_sparc_o32::jumpto() // // On entry: // thread_state pointer is in o0 // -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind15Registers_sparc6jumptoEv) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind15Registers_sparc6jumptoEv) ta 3 ldd [%o0 + 64], %l0 ldd [%o0 + 72], %l2 ldd [%o0 + 80], %l4 ldd [%o0 + 88], %l6 ldd [%o0 + 96], %i0 ldd [%o0 + 104], %i2 ldd [%o0 + 112], %i4 ldd [%o0 + 120], %i6 ld [%o0 + 60], %o7 jmp %o7 nop #endif #endif /* !defined(__USING_SJLJ_EXCEPTIONS__) */ NO_EXEC_STACK_DIRECTIVE Index: projects/clang900-import/contrib/libunwind/src/UnwindRegistersSave.S =================================================================== --- projects/clang900-import/contrib/libunwind/src/UnwindRegistersSave.S (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/UnwindRegistersSave.S (revision 351404) @@ -1,1058 +1,1063 @@ //===------------------------ UnwindRegistersSave.S -----------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. -// //===----------------------------------------------------------------------===// #include "assembly.h" .text #if !defined(__USING_SJLJ_EXCEPTIONS__) #if defined(__i386__) # -# extern int unw_getcontext(unw_context_t* thread_state) +# extern int __unw_getcontext(unw_context_t* thread_state) # # On entry: # + + # +-----------------------+ # + thread_state pointer + # +-----------------------+ # + return address + # +-----------------------+ <-- SP # + + # -DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) +DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) push %eax movl 8(%esp), %eax movl %ebx, 4(%eax) movl %ecx, 8(%eax) movl %edx, 12(%eax) movl %edi, 16(%eax) movl %esi, 20(%eax) movl %ebp, 24(%eax) movl %esp, %edx addl $8, %edx movl %edx, 28(%eax) # store what sp was at call site as esp # skip ss # skip eflags movl 4(%esp), %edx movl %edx, 40(%eax) # store return address as eip # skip cs # skip ds # skip es # skip fs # skip gs movl (%esp), %edx movl %edx, (%eax) # store original eax popl %eax xorl %eax, %eax # return UNW_ESUCCESS ret #elif defined(__x86_64__) # -# extern int unw_getcontext(unw_context_t* thread_state) +# extern int __unw_getcontext(unw_context_t* thread_state) # # On entry: # thread_state pointer is in rdi # -DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) +DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) #if defined(_WIN64) #define PTR %rcx #define TMP %rdx #else #define PTR %rdi #define TMP %rsi #endif movq %rax, (PTR) movq %rbx, 8(PTR) movq %rcx, 16(PTR) movq %rdx, 24(PTR) movq %rdi, 32(PTR) movq %rsi, 40(PTR) movq %rbp, 48(PTR) movq %rsp, 56(PTR) addq $8, 56(PTR) movq %r8, 64(PTR) movq %r9, 72(PTR) movq %r10, 80(PTR) movq %r11, 88(PTR) movq %r12, 96(PTR) movq %r13,104(PTR) movq %r14,112(PTR) movq %r15,120(PTR) movq (%rsp),TMP movq TMP,128(PTR) # store return address as rip # skip rflags # skip cs # skip fs # skip gs #if defined(_WIN64) movdqu %xmm0,176(PTR) movdqu %xmm1,192(PTR) movdqu %xmm2,208(PTR) movdqu %xmm3,224(PTR) movdqu %xmm4,240(PTR) movdqu %xmm5,256(PTR) movdqu %xmm6,272(PTR) movdqu %xmm7,288(PTR) movdqu %xmm8,304(PTR) movdqu %xmm9,320(PTR) movdqu %xmm10,336(PTR) movdqu %xmm11,352(PTR) movdqu %xmm12,368(PTR) movdqu %xmm13,384(PTR) movdqu %xmm14,400(PTR) movdqu %xmm15,416(PTR) #endif xorl %eax, %eax # return UNW_ESUCCESS ret #elif defined(__mips__) && defined(_ABIO32) && _MIPS_SIM == _ABIO32 # -# extern int unw_getcontext(unw_context_t* thread_state) +# extern int __unw_getcontext(unw_context_t* thread_state) # # On entry: # thread_state pointer is in a0 ($4) # -DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) +DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) .set push .set noat .set noreorder .set nomacro sw $1, (4 * 1)($4) sw $2, (4 * 2)($4) sw $3, (4 * 3)($4) sw $4, (4 * 4)($4) sw $5, (4 * 5)($4) sw $6, (4 * 6)($4) sw $7, (4 * 7)($4) sw $8, (4 * 8)($4) sw $9, (4 * 9)($4) sw $10, (4 * 10)($4) sw $11, (4 * 11)($4) sw $12, (4 * 12)($4) sw $13, (4 * 13)($4) sw $14, (4 * 14)($4) sw $15, (4 * 15)($4) sw $16, (4 * 16)($4) sw $17, (4 * 17)($4) sw $18, (4 * 18)($4) sw $19, (4 * 19)($4) sw $20, (4 * 20)($4) sw $21, (4 * 21)($4) sw $22, (4 * 22)($4) sw $23, (4 * 23)($4) sw $24, (4 * 24)($4) sw $25, (4 * 25)($4) sw $26, (4 * 26)($4) sw $27, (4 * 27)($4) sw $28, (4 * 28)($4) sw $29, (4 * 29)($4) sw $30, (4 * 30)($4) sw $31, (4 * 31)($4) # Store return address to pc sw $31, (4 * 32)($4) # hi and lo mfhi $8 sw $8, (4 * 33)($4) mflo $8 sw $8, (4 * 34)($4) #ifdef __mips_hard_float #if __mips_fpr != 64 sdc1 $f0, (4 * 36 + 8 * 0)($4) sdc1 $f2, (4 * 36 + 8 * 2)($4) sdc1 $f4, (4 * 36 + 8 * 4)($4) sdc1 $f6, (4 * 36 + 8 * 6)($4) sdc1 $f8, (4 * 36 + 8 * 8)($4) sdc1 $f10, (4 * 36 + 8 * 10)($4) sdc1 $f12, (4 * 36 + 8 * 12)($4) sdc1 $f14, (4 * 36 + 8 * 14)($4) sdc1 $f16, (4 * 36 + 8 * 16)($4) sdc1 $f18, (4 * 36 + 8 * 18)($4) sdc1 $f20, (4 * 36 + 8 * 20)($4) sdc1 $f22, (4 * 36 + 8 * 22)($4) sdc1 $f24, (4 * 36 + 8 * 24)($4) sdc1 $f26, (4 * 36 + 8 * 26)($4) sdc1 $f28, (4 * 36 + 8 * 28)($4) sdc1 $f30, (4 * 36 + 8 * 30)($4) #else sdc1 $f0, (4 * 36 + 8 * 0)($4) sdc1 $f1, (4 * 36 + 8 * 1)($4) sdc1 $f2, (4 * 36 + 8 * 2)($4) sdc1 $f3, (4 * 36 + 8 * 3)($4) sdc1 $f4, (4 * 36 + 8 * 4)($4) sdc1 $f5, (4 * 36 + 8 * 5)($4) sdc1 $f6, (4 * 36 + 8 * 6)($4) sdc1 $f7, (4 * 36 + 8 * 7)($4) sdc1 $f8, (4 * 36 + 8 * 8)($4) sdc1 $f9, (4 * 36 + 8 * 9)($4) sdc1 $f10, (4 * 36 + 8 * 10)($4) sdc1 $f11, (4 * 36 + 8 * 11)($4) sdc1 $f12, (4 * 36 + 8 * 12)($4) sdc1 $f13, (4 * 36 + 8 * 13)($4) sdc1 $f14, (4 * 36 + 8 * 14)($4) sdc1 $f15, (4 * 36 + 8 * 15)($4) sdc1 $f16, (4 * 36 + 8 * 16)($4) sdc1 $f17, (4 * 36 + 8 * 17)($4) sdc1 $f18, (4 * 36 + 8 * 18)($4) sdc1 $f19, (4 * 36 + 8 * 19)($4) sdc1 $f20, (4 * 36 + 8 * 20)($4) sdc1 $f21, (4 * 36 + 8 * 21)($4) sdc1 $f22, (4 * 36 + 8 * 22)($4) sdc1 $f23, (4 * 36 + 8 * 23)($4) sdc1 $f24, (4 * 36 + 8 * 24)($4) sdc1 $f25, (4 * 36 + 8 * 25)($4) sdc1 $f26, (4 * 36 + 8 * 26)($4) sdc1 $f27, (4 * 36 + 8 * 27)($4) sdc1 $f28, (4 * 36 + 8 * 28)($4) sdc1 $f29, (4 * 36 + 8 * 29)($4) sdc1 $f30, (4 * 36 + 8 * 30)($4) sdc1 $f31, (4 * 36 + 8 * 31)($4) #endif #endif jr $31 # return UNW_ESUCCESS or $2, $0, $0 .set pop #elif defined(__mips64) # -# extern int unw_getcontext(unw_context_t* thread_state) +# extern int __unw_getcontext(unw_context_t* thread_state) # # On entry: # thread_state pointer is in a0 ($4) # -DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) +DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) .set push .set noat .set noreorder .set nomacro sd $1, (8 * 1)($4) sd $2, (8 * 2)($4) sd $3, (8 * 3)($4) sd $4, (8 * 4)($4) sd $5, (8 * 5)($4) sd $6, (8 * 6)($4) sd $7, (8 * 7)($4) sd $8, (8 * 8)($4) sd $9, (8 * 9)($4) sd $10, (8 * 10)($4) sd $11, (8 * 11)($4) sd $12, (8 * 12)($4) sd $13, (8 * 13)($4) sd $14, (8 * 14)($4) sd $15, (8 * 15)($4) sd $16, (8 * 16)($4) sd $17, (8 * 17)($4) sd $18, (8 * 18)($4) sd $19, (8 * 19)($4) sd $20, (8 * 20)($4) sd $21, (8 * 21)($4) sd $22, (8 * 22)($4) sd $23, (8 * 23)($4) sd $24, (8 * 24)($4) sd $25, (8 * 25)($4) sd $26, (8 * 26)($4) sd $27, (8 * 27)($4) sd $28, (8 * 28)($4) sd $29, (8 * 29)($4) sd $30, (8 * 30)($4) sd $31, (8 * 31)($4) # Store return address to pc sd $31, (8 * 32)($4) # hi and lo mfhi $8 sd $8, (8 * 33)($4) mflo $8 sd $8, (8 * 34)($4) #ifdef __mips_hard_float sdc1 $f0, (8 * 35)($4) sdc1 $f1, (8 * 36)($4) sdc1 $f2, (8 * 37)($4) sdc1 $f3, (8 * 38)($4) sdc1 $f4, (8 * 39)($4) sdc1 $f5, (8 * 40)($4) sdc1 $f6, (8 * 41)($4) sdc1 $f7, (8 * 42)($4) sdc1 $f8, (8 * 43)($4) sdc1 $f9, (8 * 44)($4) sdc1 $f10, (8 * 45)($4) sdc1 $f11, (8 * 46)($4) sdc1 $f12, (8 * 47)($4) sdc1 $f13, (8 * 48)($4) sdc1 $f14, (8 * 49)($4) sdc1 $f15, (8 * 50)($4) sdc1 $f16, (8 * 51)($4) sdc1 $f17, (8 * 52)($4) sdc1 $f18, (8 * 53)($4) sdc1 $f19, (8 * 54)($4) sdc1 $f20, (8 * 55)($4) sdc1 $f21, (8 * 56)($4) sdc1 $f22, (8 * 57)($4) sdc1 $f23, (8 * 58)($4) sdc1 $f24, (8 * 59)($4) sdc1 $f25, (8 * 60)($4) sdc1 $f26, (8 * 61)($4) sdc1 $f27, (8 * 62)($4) sdc1 $f28, (8 * 63)($4) sdc1 $f29, (8 * 64)($4) sdc1 $f30, (8 * 65)($4) sdc1 $f31, (8 * 66)($4) #endif jr $31 # return UNW_ESUCCESS or $2, $0, $0 .set pop # elif defined(__mips__) # -# extern int unw_getcontext(unw_context_t* thread_state) +# extern int __unw_getcontext(unw_context_t* thread_state) # # Just trap for the time being. -DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) +DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) teq $0, $0 #elif defined(__powerpc64__) // -// extern int unw_getcontext(unw_context_t* thread_state) +// extern int __unw_getcontext(unw_context_t* thread_state) // // On entry: // thread_state pointer is in r3 // -DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) +DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) // store register (GPR) #define PPC64_STR(n) \ std %r##n, (8 * (n + 2))(%r3) // save GPRs PPC64_STR(0) mflr %r0 std %r0, PPC64_OFFS_SRR0(%r3) // store lr as ssr0 PPC64_STR(1) PPC64_STR(2) PPC64_STR(3) PPC64_STR(4) PPC64_STR(5) PPC64_STR(6) PPC64_STR(7) PPC64_STR(8) PPC64_STR(9) PPC64_STR(10) PPC64_STR(11) PPC64_STR(12) PPC64_STR(13) PPC64_STR(14) PPC64_STR(15) PPC64_STR(16) PPC64_STR(17) PPC64_STR(18) PPC64_STR(19) PPC64_STR(20) PPC64_STR(21) PPC64_STR(22) PPC64_STR(23) PPC64_STR(24) PPC64_STR(25) PPC64_STR(26) PPC64_STR(27) PPC64_STR(28) PPC64_STR(29) PPC64_STR(30) PPC64_STR(31) mfcr %r0 std %r0, PPC64_OFFS_CR(%r3) mfxer %r0 std %r0, PPC64_OFFS_XER(%r3) mflr %r0 std %r0, PPC64_OFFS_LR(%r3) mfctr %r0 std %r0, PPC64_OFFS_CTR(%r3) mfvrsave %r0 std %r0, PPC64_OFFS_VRSAVE(%r3) #ifdef PPC64_HAS_VMX // save VS registers // (note that this also saves floating point registers and V registers, // because part of VS is mapped to these registers) addi %r4, %r3, PPC64_OFFS_FP // store VS register #define PPC64_STVS(n) \ stxvd2x %vs##n, 0, %r4 ;\ addi %r4, %r4, 16 PPC64_STVS(0) PPC64_STVS(1) PPC64_STVS(2) PPC64_STVS(3) PPC64_STVS(4) PPC64_STVS(5) PPC64_STVS(6) PPC64_STVS(7) PPC64_STVS(8) PPC64_STVS(9) PPC64_STVS(10) PPC64_STVS(11) PPC64_STVS(12) PPC64_STVS(13) PPC64_STVS(14) PPC64_STVS(15) PPC64_STVS(16) PPC64_STVS(17) PPC64_STVS(18) PPC64_STVS(19) PPC64_STVS(20) PPC64_STVS(21) PPC64_STVS(22) PPC64_STVS(23) PPC64_STVS(24) PPC64_STVS(25) PPC64_STVS(26) PPC64_STVS(27) PPC64_STVS(28) PPC64_STVS(29) PPC64_STVS(30) PPC64_STVS(31) PPC64_STVS(32) PPC64_STVS(33) PPC64_STVS(34) PPC64_STVS(35) PPC64_STVS(36) PPC64_STVS(37) PPC64_STVS(38) PPC64_STVS(39) PPC64_STVS(40) PPC64_STVS(41) PPC64_STVS(42) PPC64_STVS(43) PPC64_STVS(44) PPC64_STVS(45) PPC64_STVS(46) PPC64_STVS(47) PPC64_STVS(48) PPC64_STVS(49) PPC64_STVS(50) PPC64_STVS(51) PPC64_STVS(52) PPC64_STVS(53) PPC64_STVS(54) PPC64_STVS(55) PPC64_STVS(56) PPC64_STVS(57) PPC64_STVS(58) PPC64_STVS(59) PPC64_STVS(60) PPC64_STVS(61) PPC64_STVS(62) PPC64_STVS(63) #else // store FP register #define PPC64_STF(n) \ stfd %f##n, (PPC64_OFFS_FP + n * 16)(%r3) // save float registers PPC64_STF(0) PPC64_STF(1) PPC64_STF(2) PPC64_STF(3) PPC64_STF(4) PPC64_STF(5) PPC64_STF(6) PPC64_STF(7) PPC64_STF(8) PPC64_STF(9) PPC64_STF(10) PPC64_STF(11) PPC64_STF(12) PPC64_STF(13) PPC64_STF(14) PPC64_STF(15) PPC64_STF(16) PPC64_STF(17) PPC64_STF(18) PPC64_STF(19) PPC64_STF(20) PPC64_STF(21) PPC64_STF(22) PPC64_STF(23) PPC64_STF(24) PPC64_STF(25) PPC64_STF(26) PPC64_STF(27) PPC64_STF(28) PPC64_STF(29) PPC64_STF(30) PPC64_STF(31) // save vector registers // Use 16-bytes below the stack pointer as an // aligned buffer to save each vector register. // Note that the stack pointer is always 16-byte aligned. subi %r4, %r1, 16 #define PPC64_STV_UNALIGNED(n) \ stvx %v##n, 0, %r4 ;\ ld %r5, 0(%r4) ;\ std %r5, (PPC64_OFFS_V + n * 16)(%r3) ;\ ld %r5, 8(%r4) ;\ std %r5, (PPC64_OFFS_V + n * 16 + 8)(%r3) PPC64_STV_UNALIGNED(0) PPC64_STV_UNALIGNED(1) PPC64_STV_UNALIGNED(2) PPC64_STV_UNALIGNED(3) PPC64_STV_UNALIGNED(4) PPC64_STV_UNALIGNED(5) PPC64_STV_UNALIGNED(6) PPC64_STV_UNALIGNED(7) PPC64_STV_UNALIGNED(8) PPC64_STV_UNALIGNED(9) PPC64_STV_UNALIGNED(10) PPC64_STV_UNALIGNED(11) PPC64_STV_UNALIGNED(12) PPC64_STV_UNALIGNED(13) PPC64_STV_UNALIGNED(14) PPC64_STV_UNALIGNED(15) PPC64_STV_UNALIGNED(16) PPC64_STV_UNALIGNED(17) PPC64_STV_UNALIGNED(18) PPC64_STV_UNALIGNED(19) PPC64_STV_UNALIGNED(20) PPC64_STV_UNALIGNED(21) PPC64_STV_UNALIGNED(22) PPC64_STV_UNALIGNED(23) PPC64_STV_UNALIGNED(24) PPC64_STV_UNALIGNED(25) PPC64_STV_UNALIGNED(26) PPC64_STV_UNALIGNED(27) PPC64_STV_UNALIGNED(28) PPC64_STV_UNALIGNED(29) PPC64_STV_UNALIGNED(30) PPC64_STV_UNALIGNED(31) #endif li %r3, 0 // return UNW_ESUCCESS blr #elif defined(__ppc__) // // extern int unw_getcontext(unw_context_t* thread_state) // // On entry: // thread_state pointer is in r3 // -DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) +DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) stw %r0, 8(%r3) mflr %r0 stw %r0, 0(%r3) // store lr as ssr0 stw %r1, 12(%r3) stw %r2, 16(%r3) stw %r3, 20(%r3) stw %r4, 24(%r3) stw %r5, 28(%r3) stw %r6, 32(%r3) stw %r7, 36(%r3) stw %r8, 40(%r3) stw %r9, 44(%r3) stw %r10, 48(%r3) stw %r11, 52(%r3) stw %r12, 56(%r3) stw %r13, 60(%r3) stw %r14, 64(%r3) stw %r15, 68(%r3) stw %r16, 72(%r3) stw %r17, 76(%r3) stw %r18, 80(%r3) stw %r19, 84(%r3) stw %r20, 88(%r3) stw %r21, 92(%r3) stw %r22, 96(%r3) stw %r23,100(%r3) stw %r24,104(%r3) stw %r25,108(%r3) stw %r26,112(%r3) stw %r27,116(%r3) stw %r28,120(%r3) stw %r29,124(%r3) stw %r30,128(%r3) stw %r31,132(%r3) // save VRSave register mfspr %r0, 256 stw %r0, 156(%r3) // save CR registers mfcr %r0 stw %r0, 136(%r3) // save CTR register mfctr %r0 stw %r0, 148(%r3) // save float registers stfd %f0, 160(%r3) stfd %f1, 168(%r3) stfd %f2, 176(%r3) stfd %f3, 184(%r3) stfd %f4, 192(%r3) stfd %f5, 200(%r3) stfd %f6, 208(%r3) stfd %f7, 216(%r3) stfd %f8, 224(%r3) stfd %f9, 232(%r3) stfd %f10,240(%r3) stfd %f11,248(%r3) stfd %f12,256(%r3) stfd %f13,264(%r3) stfd %f14,272(%r3) stfd %f15,280(%r3) stfd %f16,288(%r3) stfd %f17,296(%r3) stfd %f18,304(%r3) stfd %f19,312(%r3) stfd %f20,320(%r3) stfd %f21,328(%r3) stfd %f22,336(%r3) stfd %f23,344(%r3) stfd %f24,352(%r3) stfd %f25,360(%r3) stfd %f26,368(%r3) stfd %f27,376(%r3) stfd %f28,384(%r3) stfd %f29,392(%r3) stfd %f30,400(%r3) stfd %f31,408(%r3) // save vector registers subi %r4, %r1, 16 rlwinm %r4, %r4, 0, 0, 27 // mask low 4-bits // r4 is now a 16-byte aligned pointer into the red zone #define SAVE_VECTOR_UNALIGNED(_vec, _offset) \ stvx _vec, 0, %r4 SEPARATOR \ lwz %r5, 0(%r4) SEPARATOR \ stw %r5, _offset(%r3) SEPARATOR \ lwz %r5, 4(%r4) SEPARATOR \ stw %r5, _offset+4(%r3) SEPARATOR \ lwz %r5, 8(%r4) SEPARATOR \ stw %r5, _offset+8(%r3) SEPARATOR \ lwz %r5, 12(%r4) SEPARATOR \ stw %r5, _offset+12(%r3) SAVE_VECTOR_UNALIGNED( %v0, 424+0x000) SAVE_VECTOR_UNALIGNED( %v1, 424+0x010) SAVE_VECTOR_UNALIGNED( %v2, 424+0x020) SAVE_VECTOR_UNALIGNED( %v3, 424+0x030) SAVE_VECTOR_UNALIGNED( %v4, 424+0x040) SAVE_VECTOR_UNALIGNED( %v5, 424+0x050) SAVE_VECTOR_UNALIGNED( %v6, 424+0x060) SAVE_VECTOR_UNALIGNED( %v7, 424+0x070) SAVE_VECTOR_UNALIGNED( %v8, 424+0x080) SAVE_VECTOR_UNALIGNED( %v9, 424+0x090) SAVE_VECTOR_UNALIGNED(%v10, 424+0x0A0) SAVE_VECTOR_UNALIGNED(%v11, 424+0x0B0) SAVE_VECTOR_UNALIGNED(%v12, 424+0x0C0) SAVE_VECTOR_UNALIGNED(%v13, 424+0x0D0) SAVE_VECTOR_UNALIGNED(%v14, 424+0x0E0) SAVE_VECTOR_UNALIGNED(%v15, 424+0x0F0) SAVE_VECTOR_UNALIGNED(%v16, 424+0x100) SAVE_VECTOR_UNALIGNED(%v17, 424+0x110) SAVE_VECTOR_UNALIGNED(%v18, 424+0x120) SAVE_VECTOR_UNALIGNED(%v19, 424+0x130) SAVE_VECTOR_UNALIGNED(%v20, 424+0x140) SAVE_VECTOR_UNALIGNED(%v21, 424+0x150) SAVE_VECTOR_UNALIGNED(%v22, 424+0x160) SAVE_VECTOR_UNALIGNED(%v23, 424+0x170) SAVE_VECTOR_UNALIGNED(%v24, 424+0x180) SAVE_VECTOR_UNALIGNED(%v25, 424+0x190) SAVE_VECTOR_UNALIGNED(%v26, 424+0x1A0) SAVE_VECTOR_UNALIGNED(%v27, 424+0x1B0) SAVE_VECTOR_UNALIGNED(%v28, 424+0x1C0) SAVE_VECTOR_UNALIGNED(%v29, 424+0x1D0) SAVE_VECTOR_UNALIGNED(%v30, 424+0x1E0) SAVE_VECTOR_UNALIGNED(%v31, 424+0x1F0) li %r3, 0 // return UNW_ESUCCESS blr #elif defined(__arm64__) || defined(__aarch64__) // -// extern int unw_getcontext(unw_context_t* thread_state) +// extern int __unw_getcontext(unw_context_t* thread_state) // // On entry: // thread_state pointer is in x0 // .p2align 2 -DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) +DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) stp x0, x1, [x0, #0x000] stp x2, x3, [x0, #0x010] stp x4, x5, [x0, #0x020] stp x6, x7, [x0, #0x030] stp x8, x9, [x0, #0x040] stp x10,x11, [x0, #0x050] stp x12,x13, [x0, #0x060] stp x14,x15, [x0, #0x070] stp x16,x17, [x0, #0x080] stp x18,x19, [x0, #0x090] stp x20,x21, [x0, #0x0A0] stp x22,x23, [x0, #0x0B0] stp x24,x25, [x0, #0x0C0] stp x26,x27, [x0, #0x0D0] stp x28,x29, [x0, #0x0E0] str x30, [x0, #0x0F0] mov x1,sp str x1, [x0, #0x0F8] str x30, [x0, #0x100] // store return address as pc // skip cpsr stp d0, d1, [x0, #0x110] stp d2, d3, [x0, #0x120] stp d4, d5, [x0, #0x130] stp d6, d7, [x0, #0x140] stp d8, d9, [x0, #0x150] stp d10,d11, [x0, #0x160] stp d12,d13, [x0, #0x170] stp d14,d15, [x0, #0x180] stp d16,d17, [x0, #0x190] stp d18,d19, [x0, #0x1A0] stp d20,d21, [x0, #0x1B0] stp d22,d23, [x0, #0x1C0] stp d24,d25, [x0, #0x1D0] stp d26,d27, [x0, #0x1E0] stp d28,d29, [x0, #0x1F0] str d30, [x0, #0x200] str d31, [x0, #0x208] mov x0, #0 // return UNW_ESUCCESS ret #elif defined(__arm__) && !defined(__APPLE__) #if !defined(__ARM_ARCH_ISA_ARM) +#if (__ARM_ARCH_ISA_THUMB == 2) + .syntax unified +#endif .thumb #endif @ -@ extern int unw_getcontext(unw_context_t* thread_state) +@ extern int __unw_getcontext(unw_context_t* thread_state) @ @ On entry: @ thread_state pointer is in r0 @ @ Per EHABI #4.7 this only saves the core integer registers. @ EHABI #7.4.5 notes that in general all VRS registers should be restored @ however this is very hard to do for VFP registers because it is unknown @ to the library how many registers are implemented by the architecture. -@ Instead, VFP registers are demand saved by logic external to unw_getcontext. +@ Instead, VFP registers are demand saved by logic external to __unw_getcontext. @ .p2align 2 -DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) +DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) #if !defined(__ARM_ARCH_ISA_ARM) && __ARM_ARCH_ISA_THUMB == 1 stm r0!, {r0-r7} mov r1, r8 mov r2, r9 mov r3, r10 stm r0!, {r1-r3} mov r1, r11 mov r2, sp mov r3, lr str r1, [r0, #0] @ r11 @ r12 does not need storing, it it the intra-procedure-call scratch register str r2, [r0, #8] @ sp str r3, [r0, #12] @ lr str r3, [r0, #16] @ store return address as pc @ T1 does not have a non-cpsr-clobbering register-zeroing instruction. @ It is safe to use here though because we are about to return, and cpsr is @ not expected to be preserved. movs r0, #0 @ return UNW_ESUCCESS #else @ 32bit thumb-2 restrictions for stm: @ . the sp (r13) cannot be in the list @ . the pc (r15) cannot be in the list in an STM instruction stm r0, {r0-r12} str sp, [r0, #52] str lr, [r0, #56] str lr, [r0, #60] @ store return address as pc mov r0, #0 @ return UNW_ESUCCESS #endif JMP(lr) @ @ static void libunwind::Registers_arm::saveVFPWithFSTMD(unw_fpreg_t* values) @ @ On entry: @ values pointer is in r0 @ .p2align 2 #if defined(__ELF__) .fpu vfpv3-d16 #endif -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind13Registers_arm16saveVFPWithFSTMDEPy) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm16saveVFPWithFSTMDEPv) vstmia r0, {d0-d15} JMP(lr) @ @ static void libunwind::Registers_arm::saveVFPWithFSTMX(unw_fpreg_t* values) @ @ On entry: @ values pointer is in r0 @ .p2align 2 #if defined(__ELF__) .fpu vfpv3-d16 #endif -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind13Registers_arm16saveVFPWithFSTMXEPy) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm16saveVFPWithFSTMXEPv) vstmia r0, {d0-d15} @ fstmiax is deprecated in ARMv7+ and now behaves like vstmia JMP(lr) @ @ static void libunwind::Registers_arm::saveVFPv3(unw_fpreg_t* values) @ @ On entry: @ values pointer is in r0 @ .p2align 2 #if defined(__ELF__) .fpu vfpv3 #endif -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind13Registers_arm9saveVFPv3EPy) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm9saveVFPv3EPv) @ VFP and iwMMX instructions are only available when compiling with the flags @ that enable them. We do not want to do that in the library (because we do not @ want the compiler to generate instructions that access those) but this is @ only accessed if the personality routine needs these registers. Use of @ these registers implies they are, actually, available on the target, so @ it's ok to execute. @ So, generate the instructions using the corresponding coprocessor mnemonic. vstmia r0, {d16-d31} JMP(lr) #if defined(_LIBUNWIND_ARM_WMMX) @ @ static void libunwind::Registers_arm::saveiWMMX(unw_fpreg_t* values) @ @ On entry: @ values pointer is in r0 @ .p2align 2 #if defined(__ELF__) .arch armv5te #endif -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind13Registers_arm9saveiWMMXEPy) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm9saveiWMMXEPv) stcl p1, cr0, [r0], #8 @ wstrd wR0, [r0], #8 stcl p1, cr1, [r0], #8 @ wstrd wR1, [r0], #8 stcl p1, cr2, [r0], #8 @ wstrd wR2, [r0], #8 stcl p1, cr3, [r0], #8 @ wstrd wR3, [r0], #8 stcl p1, cr4, [r0], #8 @ wstrd wR4, [r0], #8 stcl p1, cr5, [r0], #8 @ wstrd wR5, [r0], #8 stcl p1, cr6, [r0], #8 @ wstrd wR6, [r0], #8 stcl p1, cr7, [r0], #8 @ wstrd wR7, [r0], #8 stcl p1, cr8, [r0], #8 @ wstrd wR8, [r0], #8 stcl p1, cr9, [r0], #8 @ wstrd wR9, [r0], #8 stcl p1, cr10, [r0], #8 @ wstrd wR10, [r0], #8 stcl p1, cr11, [r0], #8 @ wstrd wR11, [r0], #8 stcl p1, cr12, [r0], #8 @ wstrd wR12, [r0], #8 stcl p1, cr13, [r0], #8 @ wstrd wR13, [r0], #8 stcl p1, cr14, [r0], #8 @ wstrd wR14, [r0], #8 stcl p1, cr15, [r0], #8 @ wstrd wR15, [r0], #8 JMP(lr) @ @ static void libunwind::Registers_arm::saveiWMMXControl(unw_uint32_t* values) @ @ On entry: @ values pointer is in r0 @ .p2align 2 #if defined(__ELF__) .arch armv5te #endif -DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind13Registers_arm16saveiWMMXControlEPj) +DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind13Registers_arm16saveiWMMXControlEPj) stc2 p1, cr8, [r0], #4 @ wstrw wCGR0, [r0], #4 stc2 p1, cr9, [r0], #4 @ wstrw wCGR1, [r0], #4 stc2 p1, cr10, [r0], #4 @ wstrw wCGR2, [r0], #4 stc2 p1, cr11, [r0], #4 @ wstrw wCGR3, [r0], #4 JMP(lr) #endif #elif defined(__or1k__) # -# extern int unw_getcontext(unw_context_t* thread_state) +# extern int __unw_getcontext(unw_context_t* thread_state) # # On entry: # thread_state pointer is in r3 # -DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) +DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) l.sw 0(r3), r0 l.sw 4(r3), r1 l.sw 8(r3), r2 l.sw 12(r3), r3 l.sw 16(r3), r4 l.sw 20(r3), r5 l.sw 24(r3), r6 l.sw 28(r3), r7 l.sw 32(r3), r8 l.sw 36(r3), r9 l.sw 40(r3), r10 l.sw 44(r3), r11 l.sw 48(r3), r12 l.sw 52(r3), r13 l.sw 56(r3), r14 l.sw 60(r3), r15 l.sw 64(r3), r16 l.sw 68(r3), r17 l.sw 72(r3), r18 l.sw 76(r3), r19 l.sw 80(r3), r20 l.sw 84(r3), r21 l.sw 88(r3), r22 l.sw 92(r3), r23 l.sw 96(r3), r24 l.sw 100(r3), r25 l.sw 104(r3), r26 l.sw 108(r3), r27 l.sw 112(r3), r28 l.sw 116(r3), r29 l.sw 120(r3), r30 l.sw 124(r3), r31 # store ra to pc l.sw 128(r3), r9 # zero epcr l.sw 132(r3), r0 #elif defined(__riscv) # # extern int unw_getcontext(unw_context_t* thread_state) # # On entry: # thread_state pointer is in a0 # DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) // x0 is zero sd x1, (8 * 1)(a0) sd x2, (8 * 2)(a0) sd x3, (8 * 3)(a0) sd x4, (8 * 4)(a0) sd x5, (8 * 5)(a0) sd x6, (8 * 6)(a0) sd x7, (8 * 7)(a0) sd x8, (8 * 8)(a0) sd x9, (8 * 9)(a0) sd x10, (8 * 10)(a0) sd x11, (8 * 11)(a0) sd x12, (8 * 12)(a0) sd x13, (8 * 13)(a0) sd x14, (8 * 14)(a0) sd x15, (8 * 15)(a0) sd x16, (8 * 16)(a0) sd x17, (8 * 17)(a0) sd x18, (8 * 18)(a0) sd x19, (8 * 19)(a0) sd x20, (8 * 20)(a0) sd x21, (8 * 21)(a0) sd x22, (8 * 22)(a0) sd x23, (8 * 23)(a0) sd x24, (8 * 24)(a0) sd x25, (8 * 25)(a0) sd x26, (8 * 26)(a0) sd x27, (8 * 27)(a0) sd x28, (8 * 28)(a0) sd x29, (8 * 29)(a0) sd x30, (8 * 30)(a0) sd x31, (8 * 31)(a0) #ifdef __riscv_float_abi_double fsd f0, (8 * 32 + 8 * 0)(a0) fsd f1, (8 * 32 + 8 * 1)(a0) fsd f2, (8 * 32 + 8 * 2)(a0) fsd f3, (8 * 32 + 8 * 3)(a0) fsd f4, (8 * 32 + 8 * 4)(a0) fsd f5, (8 * 32 + 8 * 5)(a0) fsd f6, (8 * 32 + 8 * 6)(a0) fsd f7, (8 * 32 + 8 * 7)(a0) fsd f8, (8 * 32 + 8 * 8)(a0) fsd f9, (8 * 32 + 8 * 9)(a0) fsd f10, (8 * 32 + 8 * 10)(a0) fsd f11, (8 * 32 + 8 * 11)(a0) fsd f12, (8 * 32 + 8 * 12)(a0) fsd f13, (8 * 32 + 8 * 13)(a0) fsd f14, (8 * 32 + 8 * 14)(a0) fsd f15, (8 * 32 + 8 * 15)(a0) fsd f16, (8 * 32 + 8 * 16)(a0) fsd f17, (8 * 32 + 8 * 17)(a0) fsd f18, (8 * 32 + 8 * 18)(a0) fsd f19, (8 * 32 + 8 * 19)(a0) fsd f20, (8 * 32 + 8 * 20)(a0) fsd f21, (8 * 32 + 8 * 21)(a0) fsd f22, (8 * 32 + 8 * 22)(a0) fsd f23, (8 * 32 + 8 * 23)(a0) fsd f24, (8 * 32 + 8 * 24)(a0) fsd f25, (8 * 32 + 8 * 25)(a0) fsd f26, (8 * 32 + 8 * 26)(a0) fsd f27, (8 * 32 + 8 * 27)(a0) fsd f28, (8 * 32 + 8 * 28)(a0) fsd f29, (8 * 32 + 8 * 29)(a0) fsd f30, (8 * 32 + 8 * 30)(a0) fsd f31, (8 * 32 + 8 * 31)(a0) #endif li a0, 0 // return UNW_ESUCCESS ret // jump to ra #elif defined(__sparc__) # -# extern int unw_getcontext(unw_context_t* thread_state) +# extern int __unw_getcontext(unw_context_t* thread_state) # # On entry: # thread_state pointer is in o0 # -DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) +DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext) ta 3 add %o7, 8, %o7 std %g0, [%o0 + 0] std %g2, [%o0 + 8] std %g4, [%o0 + 16] std %g6, [%o0 + 24] std %o0, [%o0 + 32] std %o2, [%o0 + 40] std %o4, [%o0 + 48] std %o6, [%o0 + 56] std %l0, [%o0 + 64] std %l2, [%o0 + 72] std %l4, [%o0 + 80] std %l6, [%o0 + 88] std %i0, [%o0 + 96] std %i2, [%o0 + 104] std %i4, [%o0 + 112] std %i6, [%o0 + 120] jmp %o7 clr %o0 // return UNW_ESUCCESS #endif + + WEAK_ALIAS(__unw_getcontext, unw_getcontext) + #endif /* !defined(__USING_SJLJ_EXCEPTIONS__) */ NO_EXEC_STACK_DIRECTIVE Index: projects/clang900-import/contrib/libunwind/src/Unwind_AppleExtras.cpp =================================================================== --- projects/clang900-import/contrib/libunwind/src/Unwind_AppleExtras.cpp (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/Unwind_AppleExtras.cpp (revision 351404) @@ -1,184 +1,183 @@ //===--------------------- Unwind_AppleExtras.cpp -------------------------===// // -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // // //===----------------------------------------------------------------------===// #include "config.h" #include "AddressSpace.hpp" #include "DwarfParser.hpp" // private keymgr stuff #define KEYMGR_GCC3_DW2_OBJ_LIST 302 extern "C" { extern void _keymgr_set_and_unlock_processwide_ptr(int key, void *ptr); extern void *_keymgr_get_and_lock_processwide_ptr(int key); } // undocumented libgcc "struct object" struct libgcc_object { void *start; void *unused1; void *unused2; void *fde; unsigned long encoding; void *fde_end; libgcc_object *next; }; // undocumented libgcc "struct km_object_info" referenced by // KEYMGR_GCC3_DW2_OBJ_LIST struct libgcc_object_info { libgcc_object *seen_objects; libgcc_object *unseen_objects; unsigned spare[2]; }; // static linker symbols to prevent wrong two level namespace for _Unwind symbols #if defined(__arm__) #define NOT_HERE_BEFORE_5_0(sym) \ extern const char sym##_tmp30 __asm("$ld$hide$os3.0$_" #sym ); \ __attribute__((visibility("default"))) const char sym##_tmp30 = 0; \ extern const char sym##_tmp31 __asm("$ld$hide$os3.1$_" #sym ); \ __attribute__((visibility("default"))) const char sym##_tmp31 = 0; \ extern const char sym##_tmp32 __asm("$ld$hide$os3.2$_" #sym );\ __attribute__((visibility("default"))) const char sym##_tmp32 = 0; \ extern const char sym##_tmp40 __asm("$ld$hide$os4.0$_" #sym ); \ __attribute__((visibility("default"))) const char sym##_tmp40 = 0; \ extern const char sym##_tmp41 __asm("$ld$hide$os4.1$_" #sym ); \ __attribute__((visibility("default"))) const char sym##_tmp41 = 0; \ extern const char sym##_tmp42 __asm("$ld$hide$os4.2$_" #sym ); \ __attribute__((visibility("default"))) const char sym##_tmp42 = 0; \ extern const char sym##_tmp43 __asm("$ld$hide$os4.3$_" #sym ); \ __attribute__((visibility("default"))) const char sym##_tmp43 = 0; #elif defined(__arm64__) #define NOT_HERE_BEFORE_10_6(sym) #define NEVER_HERE(sym) #else #define NOT_HERE_BEFORE_10_6(sym) \ extern const char sym##_tmp4 __asm("$ld$hide$os10.4$_" #sym ); \ __attribute__((visibility("default"))) const char sym##_tmp4 = 0; \ extern const char sym##_tmp5 __asm("$ld$hide$os10.5$_" #sym ); \ __attribute__((visibility("default"))) const char sym##_tmp5 = 0; #define NEVER_HERE(sym) \ extern const char sym##_tmp4 __asm("$ld$hide$os10.4$_" #sym ); \ __attribute__((visibility("default"))) const char sym##_tmp4 = 0; \ extern const char sym##_tmp5 __asm("$ld$hide$os10.5$_" #sym ); \ __attribute__((visibility("default"))) const char sym##_tmp5 = 0; \ extern const char sym##_tmp6 __asm("$ld$hide$os10.6$_" #sym ); \ __attribute__((visibility("default"))) const char sym##_tmp6 = 0; #endif #if defined(_LIBUNWIND_BUILD_ZERO_COST_APIS) // // symbols in libSystem.dylib in 10.6 and later, but are in libgcc_s.dylib in // earlier versions // NOT_HERE_BEFORE_10_6(_Unwind_DeleteException) NOT_HERE_BEFORE_10_6(_Unwind_Find_FDE) NOT_HERE_BEFORE_10_6(_Unwind_ForcedUnwind) NOT_HERE_BEFORE_10_6(_Unwind_GetGR) NOT_HERE_BEFORE_10_6(_Unwind_GetIP) NOT_HERE_BEFORE_10_6(_Unwind_GetLanguageSpecificData) NOT_HERE_BEFORE_10_6(_Unwind_GetRegionStart) NOT_HERE_BEFORE_10_6(_Unwind_RaiseException) NOT_HERE_BEFORE_10_6(_Unwind_Resume) NOT_HERE_BEFORE_10_6(_Unwind_SetGR) NOT_HERE_BEFORE_10_6(_Unwind_SetIP) NOT_HERE_BEFORE_10_6(_Unwind_Backtrace) NOT_HERE_BEFORE_10_6(_Unwind_FindEnclosingFunction) NOT_HERE_BEFORE_10_6(_Unwind_GetCFA) NOT_HERE_BEFORE_10_6(_Unwind_GetDataRelBase) NOT_HERE_BEFORE_10_6(_Unwind_GetTextRelBase) NOT_HERE_BEFORE_10_6(_Unwind_Resume_or_Rethrow) NOT_HERE_BEFORE_10_6(_Unwind_GetIPInfo) NOT_HERE_BEFORE_10_6(__register_frame) NOT_HERE_BEFORE_10_6(__deregister_frame) // // symbols in libSystem.dylib for compatibility, but we don't want any new code // using them // NEVER_HERE(__register_frame_info_bases) NEVER_HERE(__register_frame_info) NEVER_HERE(__register_frame_info_table_bases) NEVER_HERE(__register_frame_info_table) NEVER_HERE(__register_frame_table) NEVER_HERE(__deregister_frame_info) NEVER_HERE(__deregister_frame_info_bases) #endif // defined(_LIBUNWIND_BUILD_ZERO_COST_APIS) #if defined(_LIBUNWIND_BUILD_SJLJ_APIS) // // symbols in libSystem.dylib in iOS 5.0 and later, but are in libgcc_s.dylib in // earlier versions // NOT_HERE_BEFORE_5_0(_Unwind_GetLanguageSpecificData) NOT_HERE_BEFORE_5_0(_Unwind_GetRegionStart) NOT_HERE_BEFORE_5_0(_Unwind_GetIP) NOT_HERE_BEFORE_5_0(_Unwind_SetGR) NOT_HERE_BEFORE_5_0(_Unwind_SetIP) NOT_HERE_BEFORE_5_0(_Unwind_DeleteException) NOT_HERE_BEFORE_5_0(_Unwind_SjLj_Register) NOT_HERE_BEFORE_5_0(_Unwind_GetGR) NOT_HERE_BEFORE_5_0(_Unwind_GetIPInfo) NOT_HERE_BEFORE_5_0(_Unwind_GetCFA) NOT_HERE_BEFORE_5_0(_Unwind_SjLj_Resume) NOT_HERE_BEFORE_5_0(_Unwind_SjLj_RaiseException) NOT_HERE_BEFORE_5_0(_Unwind_SjLj_Resume_or_Rethrow) NOT_HERE_BEFORE_5_0(_Unwind_SjLj_Unregister) #endif // defined(_LIBUNWIND_BUILD_SJLJ_APIS) namespace libunwind { _LIBUNWIND_HIDDEN bool checkKeyMgrRegisteredFDEs(uintptr_t pc, void *&fde) { #if __MAC_OS_X_VERSION_MIN_REQUIRED // lastly check for old style keymgr registration of dynamically generated // FDEs acquire exclusive access to libgcc_object_info libgcc_object_info *head = (libgcc_object_info *) _keymgr_get_and_lock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST); if (head != NULL) { // look at each FDE in keymgr for (libgcc_object *ob = head->unseen_objects; ob != NULL; ob = ob->next) { CFI_Parser::FDE_Info fdeInfo; CFI_Parser::CIE_Info cieInfo; const char *msg = CFI_Parser::decodeFDE( LocalAddressSpace::sThisAddressSpace, (uintptr_t)ob->fde, &fdeInfo, &cieInfo); if (msg == NULL) { // Check if this FDE is for a function that includes the pc if ((fdeInfo.pcStart <= pc) && (pc < fdeInfo.pcEnd)) { fde = (void*)fdeInfo.pcStart; _keymgr_set_and_unlock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST, head); return true; } } } } // release libgcc_object_info _keymgr_set_and_unlock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST, head); #else (void)pc; (void)fde; #endif return false; } } Index: projects/clang900-import/contrib/libunwind/src/assembly.h =================================================================== --- projects/clang900-import/contrib/libunwind/src/assembly.h (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/assembly.h (revision 351404) @@ -1,140 +1,158 @@ /* ===-- assembly.h - libUnwind assembler support macros -------------------=== * - * The LLVM Compiler Infrastructure + * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. + * See https://llvm.org/LICENSE.txt for license information. + * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception * - * This file is dual licensed under the MIT and the University of Illinois Open - * Source Licenses. See LICENSE.TXT for details. - * * ===----------------------------------------------------------------------=== * * This file defines macros for use in libUnwind assembler source. * This file is not part of the interface of this library. * * ===----------------------------------------------------------------------=== */ #ifndef UNWIND_ASSEMBLY_H #define UNWIND_ASSEMBLY_H #if defined(__powerpc64__) #define SEPARATOR ; #define PPC64_OFFS_SRR0 0 #define PPC64_OFFS_CR 272 #define PPC64_OFFS_XER 280 #define PPC64_OFFS_LR 288 #define PPC64_OFFS_CTR 296 #define PPC64_OFFS_VRSAVE 304 #define PPC64_OFFS_FP 312 #define PPC64_OFFS_V 824 #ifdef _ARCH_PWR8 #define PPC64_HAS_VMX #endif #elif defined(__arm64__) #define SEPARATOR %% #else #define SEPARATOR ; #endif #if defined(__powerpc64__) && (!defined(_CALL_ELF) || _CALL_ELF == 1) #define PPC64_OPD1 .section .opd,"aw",@progbits SEPARATOR #define PPC64_OPD2 SEPARATOR \ .p2align 3 SEPARATOR \ .quad .Lfunc_begin0 SEPARATOR \ .quad .TOC.@tocbase SEPARATOR \ .quad 0 SEPARATOR \ .text SEPARATOR \ .Lfunc_begin0: #else #define PPC64_OPD1 #define PPC64_OPD2 #endif #define GLUE2(a, b) a ## b #define GLUE(a, b) GLUE2(a, b) #define SYMBOL_NAME(name) GLUE(__USER_LABEL_PREFIX__, name) #if defined(__APPLE__) #define SYMBOL_IS_FUNC(name) #define EXPORT_SYMBOL(name) #define HIDDEN_SYMBOL(name) .private_extern name +#define WEAK_SYMBOL(name) .weak_reference name +#define WEAK_ALIAS(name, aliasname) \ + .globl SYMBOL_NAME(aliasname) SEPARATOR \ + WEAK_SYMBOL(aliasname) SEPARATOR \ + SYMBOL_NAME(aliasname) = SYMBOL_NAME(name) + #define NO_EXEC_STACK_DIRECTIVE #elif defined(__ELF__) #if defined(__arm__) #define SYMBOL_IS_FUNC(name) .type name,%function #else #define SYMBOL_IS_FUNC(name) .type name,@function #endif #define EXPORT_SYMBOL(name) #define HIDDEN_SYMBOL(name) .hidden name +#define WEAK_SYMBOL(name) .weak name +#define WEAK_ALIAS(name, aliasname) \ + WEAK_SYMBOL(aliasname) SEPARATOR \ + SYMBOL_NAME(aliasname) = SYMBOL_NAME(name) #if defined(__GNU__) || defined(__FreeBSD__) || defined(__Fuchsia__) || \ defined(__linux__) #define NO_EXEC_STACK_DIRECTIVE .section .note.GNU-stack,"",%progbits #else #define NO_EXEC_STACK_DIRECTIVE #endif #elif defined(_WIN32) #define SYMBOL_IS_FUNC(name) \ .def name SEPARATOR \ .scl 2 SEPARATOR \ .type 32 SEPARATOR \ .endef -#define EXPORT_SYMBOL2(name) \ - .section .drectve,"yn" SEPARATOR \ - .ascii "-export:", #name, "\0" SEPARATOR \ +#define EXPORT_SYMBOL2(name) \ + .section .drectve,"yn" SEPARATOR \ + .ascii "-export:", #name, "\0" SEPARATOR \ .text #if defined(_LIBUNWIND_DISABLE_VISIBILITY_ANNOTATIONS) #define EXPORT_SYMBOL(name) #else #define EXPORT_SYMBOL(name) EXPORT_SYMBOL2(name) #endif #define HIDDEN_SYMBOL(name) +#if defined(__MINGW32__) +#define WEAK_ALIAS(name, aliasname) \ + .globl SYMBOL_NAME(aliasname) SEPARATOR \ + EXPORT_SYMBOL(aliasname) SEPARATOR \ + SYMBOL_NAME(aliasname) = SYMBOL_NAME(name) +#else +#define WEAK_ALIAS3(name, aliasname) \ + .section .drectve,"yn" SEPARATOR \ + .ascii "-alternatename:", #aliasname, "=", #name, "\0" SEPARATOR \ + .text +#define WEAK_ALIAS2(name, aliasname) \ + WEAK_ALIAS3(name, aliasname) +#define WEAK_ALIAS(name, aliasname) \ + EXPORT_SYMBOL(SYMBOL_NAME(aliasname)) SEPARATOR \ + WEAK_ALIAS2(SYMBOL_NAME(name), SYMBOL_NAME(aliasname)) +#endif + #define NO_EXEC_STACK_DIRECTIVE #elif defined(__sparc__) #else #error Unsupported target #endif -#define DEFINE_LIBUNWIND_FUNCTION(name) \ - .globl SYMBOL_NAME(name) SEPARATOR \ - EXPORT_SYMBOL(name) SEPARATOR \ - SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \ - PPC64_OPD1 \ - SYMBOL_NAME(name): \ - PPC64_OPD2 - -#define DEFINE_LIBUNWIND_PRIVATE_FUNCTION(name) \ - .globl SYMBOL_NAME(name) SEPARATOR \ - HIDDEN_SYMBOL(SYMBOL_NAME(name)) SEPARATOR \ - SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \ - PPC64_OPD1 \ - SYMBOL_NAME(name): \ +#define DEFINE_LIBUNWIND_FUNCTION(name) \ + .globl SYMBOL_NAME(name) SEPARATOR \ + HIDDEN_SYMBOL(SYMBOL_NAME(name)) SEPARATOR \ + SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \ + PPC64_OPD1 \ + SYMBOL_NAME(name): \ PPC64_OPD2 #if defined(__arm__) #if !defined(__ARM_ARCH) #define __ARM_ARCH 4 #endif #if defined(__ARM_ARCH_4T__) || __ARM_ARCH >= 5 #define ARM_HAS_BX #endif #ifdef ARM_HAS_BX #define JMP(r) bx r #else #define JMP(r) mov pc, r #endif #endif /* __arm__ */ #endif /* UNWIND_ASSEMBLY_H */ Index: projects/clang900-import/contrib/libunwind/src/config.h =================================================================== --- projects/clang900-import/contrib/libunwind/src/config.h (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/config.h (revision 351404) @@ -1,184 +1,212 @@ //===----------------------------- config.h -------------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // Defines macros used within libunwind project. // //===----------------------------------------------------------------------===// #ifndef LIBUNWIND_CONFIG_H #define LIBUNWIND_CONFIG_H #include #include #include #include // Define static_assert() unless already defined by compiler. #ifndef __has_feature #define __has_feature(__x) 0 #endif #if !(__has_feature(cxx_static_assert)) && !defined(static_assert) #define static_assert(__b, __m) \ extern int compile_time_assert_failed[ ( __b ) ? 1 : -1 ] \ __attribute__( ( unused ) ); #endif // Platform specific configuration defines. #ifdef __APPLE__ #if defined(FOR_DYLD) #define _LIBUNWIND_SUPPORT_COMPACT_UNWIND #else #define _LIBUNWIND_SUPPORT_COMPACT_UNWIND #define _LIBUNWIND_SUPPORT_DWARF_UNWIND 1 #endif #elif defined(_WIN32) #ifdef __SEH__ #define _LIBUNWIND_SUPPORT_SEH_UNWIND 1 #else #define _LIBUNWIND_SUPPORT_DWARF_UNWIND 1 #endif #else #if defined(__ARM_DWARF_EH__) || !defined(__arm__) #define _LIBUNWIND_SUPPORT_DWARF_UNWIND 1 #define _LIBUNWIND_SUPPORT_DWARF_INDEX 1 #endif #endif #if defined(_LIBUNWIND_DISABLE_VISIBILITY_ANNOTATIONS) #define _LIBUNWIND_EXPORT #define _LIBUNWIND_HIDDEN #else #if !defined(__ELF__) && !defined(__MACH__) #define _LIBUNWIND_EXPORT __declspec(dllexport) #define _LIBUNWIND_HIDDEN #else #define _LIBUNWIND_EXPORT __attribute__((visibility("default"))) #define _LIBUNWIND_HIDDEN __attribute__((visibility("hidden"))) #endif +#endif + +#define STR(a) #a +#define XSTR(a) STR(a) +#define SYMBOL_NAME(name) XSTR(__USER_LABEL_PREFIX__) #name + +#if defined(__APPLE__) +#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \ + __asm__(".globl " SYMBOL_NAME(aliasname)); \ + __asm__(SYMBOL_NAME(aliasname) " = " SYMBOL_NAME(name)); \ + extern "C" _LIBUNWIND_EXPORT __typeof(name) aliasname \ + __attribute__((weak_import)); +#elif defined(__ELF__) +#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \ + extern "C" _LIBUNWIND_EXPORT __typeof(name) aliasname \ + __attribute__((weak, alias(#name))); +#elif defined(_WIN32) +#if defined(__MINGW32__) +#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \ + extern "C" _LIBUNWIND_EXPORT __typeof(name) aliasname \ + __attribute__((alias(#name))); +#else +#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \ + __pragma(comment(linker, "/alternatename:" SYMBOL_NAME(aliasname) "=" \ + SYMBOL_NAME(name))) \ + extern "C" _LIBUNWIND_EXPORT __typeof(name) aliasname; +#endif +#else +#error Unsupported target #endif #if (defined(__APPLE__) && defined(__arm__)) || defined(__USING_SJLJ_EXCEPTIONS__) #define _LIBUNWIND_BUILD_SJLJ_APIS #endif #if defined(__i386__) || defined(__x86_64__) || defined(__ppc__) || defined(__ppc64__) || defined(__powerpc64__) #define _LIBUNWIND_SUPPORT_FRAME_APIS #endif #if defined(__i386__) || defined(__x86_64__) || \ defined(__ppc__) || defined(__ppc64__) || defined(__powerpc64__) || \ (!defined(__APPLE__) && defined(__arm__)) || \ (defined(__arm64__) || defined(__aarch64__)) || \ defined(__mips__) || \ defined(__riscv) #if !defined(_LIBUNWIND_BUILD_SJLJ_APIS) #define _LIBUNWIND_BUILD_ZERO_COST_APIS #endif #endif #if defined(__powerpc64__) && defined(_ARCH_PWR8) #define PPC64_HAS_VMX #endif #if defined(NDEBUG) && defined(_LIBUNWIND_IS_BAREMETAL) #define _LIBUNWIND_ABORT(msg) \ do { \ abort(); \ } while (0) #else #define _LIBUNWIND_ABORT(msg) \ do { \ fprintf(stderr, "libunwind: %s %s:%d - %s\n", __func__, __FILE__, \ __LINE__, msg); \ fflush(stderr); \ abort(); \ } while (0) #endif #if defined(NDEBUG) && defined(_LIBUNWIND_IS_BAREMETAL) #define _LIBUNWIND_LOG0(msg) #define _LIBUNWIND_LOG(msg, ...) #else #define _LIBUNWIND_LOG0(msg) \ fprintf(stderr, "libunwind: " msg "\n") #define _LIBUNWIND_LOG(msg, ...) \ fprintf(stderr, "libunwind: " msg "\n", __VA_ARGS__) #endif #if defined(NDEBUG) #define _LIBUNWIND_LOG_IF_FALSE(x) x #else #define _LIBUNWIND_LOG_IF_FALSE(x) \ do { \ bool _ret = x; \ if (!_ret) \ _LIBUNWIND_LOG("" #x " failed in %s", __FUNCTION__); \ } while (0) #endif // Macros that define away in non-Debug builds #ifdef NDEBUG #define _LIBUNWIND_DEBUG_LOG(msg, ...) #define _LIBUNWIND_TRACE_API(msg, ...) #define _LIBUNWIND_TRACING_UNWINDING (0) #define _LIBUNWIND_TRACING_DWARF (0) #define _LIBUNWIND_TRACE_UNWINDING(msg, ...) #define _LIBUNWIND_TRACE_DWARF(...) #else #ifdef __cplusplus extern "C" { #endif extern bool logAPIs(); extern bool logUnwinding(); extern bool logDWARF(); #ifdef __cplusplus } #endif #define _LIBUNWIND_DEBUG_LOG(msg, ...) _LIBUNWIND_LOG(msg, __VA_ARGS__) #define _LIBUNWIND_TRACE_API(msg, ...) \ do { \ if (logAPIs()) \ _LIBUNWIND_LOG(msg, __VA_ARGS__); \ } while (0) #define _LIBUNWIND_TRACING_UNWINDING logUnwinding() #define _LIBUNWIND_TRACING_DWARF logDWARF() #define _LIBUNWIND_TRACE_UNWINDING(msg, ...) \ do { \ if (logUnwinding()) \ _LIBUNWIND_LOG(msg, __VA_ARGS__); \ } while (0) #define _LIBUNWIND_TRACE_DWARF(...) \ do { \ if (logDWARF()) \ fprintf(stderr, __VA_ARGS__); \ } while (0) #endif #ifdef __cplusplus // Used to fit UnwindCursor and Registers_xxx types against unw_context_t / // unw_cursor_t sized memory blocks. #if defined(_LIBUNWIND_IS_NATIVE_ONLY) # define COMP_OP == #else # define COMP_OP <= #endif template struct check_fit { template struct blk_count { static const size_t count = (sizeof(T) + sizeof(uint64_t) - 1) / sizeof(uint64_t); }; static const bool does_fit = (blk_count<_Type>::count COMP_OP blk_count<_Mem>::count); }; #undef COMP_OP #endif // __cplusplus #endif // LIBUNWIND_CONFIG_H Index: projects/clang900-import/contrib/libunwind/src/dwarf2.h =================================================================== --- projects/clang900-import/contrib/libunwind/src/dwarf2.h (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/dwarf2.h (revision 351404) @@ -1,240 +1,239 @@ //===------------------------------- dwarf2.h -----------------------------===// // -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// /* These constants were taken from version 3 of the DWARF standard, which is Copyright (c) 2005 Free Standards Group, and Copyright (c) 1992, 1993 UNIX International, Inc. */ #ifndef __DWARF2__ #define __DWARF2__ // DWARF unwind instructions enum { DW_CFA_nop = 0x0, DW_CFA_set_loc = 0x1, DW_CFA_advance_loc1 = 0x2, DW_CFA_advance_loc2 = 0x3, DW_CFA_advance_loc4 = 0x4, DW_CFA_offset_extended = 0x5, DW_CFA_restore_extended = 0x6, DW_CFA_undefined = 0x7, DW_CFA_same_value = 0x8, DW_CFA_register = 0x9, DW_CFA_remember_state = 0xA, DW_CFA_restore_state = 0xB, DW_CFA_def_cfa = 0xC, DW_CFA_def_cfa_register = 0xD, DW_CFA_def_cfa_offset = 0xE, DW_CFA_def_cfa_expression = 0xF, DW_CFA_expression = 0x10, DW_CFA_offset_extended_sf = 0x11, DW_CFA_def_cfa_sf = 0x12, DW_CFA_def_cfa_offset_sf = 0x13, DW_CFA_val_offset = 0x14, DW_CFA_val_offset_sf = 0x15, DW_CFA_val_expression = 0x16, DW_CFA_advance_loc = 0x40, // high 2 bits are 0x1, lower 6 bits are delta DW_CFA_offset = 0x80, // high 2 bits are 0x2, lower 6 bits are register DW_CFA_restore = 0xC0, // high 2 bits are 0x3, lower 6 bits are register // GNU extensions DW_CFA_GNU_window_save = 0x2D, DW_CFA_GNU_args_size = 0x2E, DW_CFA_GNU_negative_offset_extended = 0x2F, // AARCH64 extensions DW_CFA_AARCH64_negate_ra_state = 0x2D }; // FSF exception handling Pointer-Encoding constants // Used in CFI augmentation by GCC enum { DW_EH_PE_ptr = 0x00, DW_EH_PE_uleb128 = 0x01, DW_EH_PE_udata2 = 0x02, DW_EH_PE_udata4 = 0x03, DW_EH_PE_udata8 = 0x04, DW_EH_PE_signed = 0x08, DW_EH_PE_sleb128 = 0x09, DW_EH_PE_sdata2 = 0x0A, DW_EH_PE_sdata4 = 0x0B, DW_EH_PE_sdata8 = 0x0C, DW_EH_PE_absptr = 0x00, DW_EH_PE_pcrel = 0x10, DW_EH_PE_textrel = 0x20, DW_EH_PE_datarel = 0x30, DW_EH_PE_funcrel = 0x40, DW_EH_PE_aligned = 0x50, DW_EH_PE_indirect = 0x80, DW_EH_PE_omit = 0xFF }; // DWARF expressions enum { DW_OP_addr = 0x03, // constant address (size target specific) DW_OP_deref = 0x06, DW_OP_const1u = 0x08, // 1-byte constant DW_OP_const1s = 0x09, // 1-byte constant DW_OP_const2u = 0x0A, // 2-byte constant DW_OP_const2s = 0x0B, // 2-byte constant DW_OP_const4u = 0x0C, // 4-byte constant DW_OP_const4s = 0x0D, // 4-byte constant DW_OP_const8u = 0x0E, // 8-byte constant DW_OP_const8s = 0x0F, // 8-byte constant DW_OP_constu = 0x10, // ULEB128 constant DW_OP_consts = 0x11, // SLEB128 constant DW_OP_dup = 0x12, DW_OP_drop = 0x13, DW_OP_over = 0x14, DW_OP_pick = 0x15, // 1-byte stack index DW_OP_swap = 0x16, DW_OP_rot = 0x17, DW_OP_xderef = 0x18, DW_OP_abs = 0x19, DW_OP_and = 0x1A, DW_OP_div = 0x1B, DW_OP_minus = 0x1C, DW_OP_mod = 0x1D, DW_OP_mul = 0x1E, DW_OP_neg = 0x1F, DW_OP_not = 0x20, DW_OP_or = 0x21, DW_OP_plus = 0x22, DW_OP_plus_uconst = 0x23, // ULEB128 addend DW_OP_shl = 0x24, DW_OP_shr = 0x25, DW_OP_shra = 0x26, DW_OP_xor = 0x27, DW_OP_skip = 0x2F, // signed 2-byte constant DW_OP_bra = 0x28, // signed 2-byte constant DW_OP_eq = 0x29, DW_OP_ge = 0x2A, DW_OP_gt = 0x2B, DW_OP_le = 0x2C, DW_OP_lt = 0x2D, DW_OP_ne = 0x2E, DW_OP_lit0 = 0x30, // Literal 0 DW_OP_lit1 = 0x31, // Literal 1 DW_OP_lit2 = 0x32, // Literal 2 DW_OP_lit3 = 0x33, // Literal 3 DW_OP_lit4 = 0x34, // Literal 4 DW_OP_lit5 = 0x35, // Literal 5 DW_OP_lit6 = 0x36, // Literal 6 DW_OP_lit7 = 0x37, // Literal 7 DW_OP_lit8 = 0x38, // Literal 8 DW_OP_lit9 = 0x39, // Literal 9 DW_OP_lit10 = 0x3A, // Literal 10 DW_OP_lit11 = 0x3B, // Literal 11 DW_OP_lit12 = 0x3C, // Literal 12 DW_OP_lit13 = 0x3D, // Literal 13 DW_OP_lit14 = 0x3E, // Literal 14 DW_OP_lit15 = 0x3F, // Literal 15 DW_OP_lit16 = 0x40, // Literal 16 DW_OP_lit17 = 0x41, // Literal 17 DW_OP_lit18 = 0x42, // Literal 18 DW_OP_lit19 = 0x43, // Literal 19 DW_OP_lit20 = 0x44, // Literal 20 DW_OP_lit21 = 0x45, // Literal 21 DW_OP_lit22 = 0x46, // Literal 22 DW_OP_lit23 = 0x47, // Literal 23 DW_OP_lit24 = 0x48, // Literal 24 DW_OP_lit25 = 0x49, // Literal 25 DW_OP_lit26 = 0x4A, // Literal 26 DW_OP_lit27 = 0x4B, // Literal 27 DW_OP_lit28 = 0x4C, // Literal 28 DW_OP_lit29 = 0x4D, // Literal 29 DW_OP_lit30 = 0x4E, // Literal 30 DW_OP_lit31 = 0x4F, // Literal 31 DW_OP_reg0 = 0x50, // Contents of reg0 DW_OP_reg1 = 0x51, // Contents of reg1 DW_OP_reg2 = 0x52, // Contents of reg2 DW_OP_reg3 = 0x53, // Contents of reg3 DW_OP_reg4 = 0x54, // Contents of reg4 DW_OP_reg5 = 0x55, // Contents of reg5 DW_OP_reg6 = 0x56, // Contents of reg6 DW_OP_reg7 = 0x57, // Contents of reg7 DW_OP_reg8 = 0x58, // Contents of reg8 DW_OP_reg9 = 0x59, // Contents of reg9 DW_OP_reg10 = 0x5A, // Contents of reg10 DW_OP_reg11 = 0x5B, // Contents of reg11 DW_OP_reg12 = 0x5C, // Contents of reg12 DW_OP_reg13 = 0x5D, // Contents of reg13 DW_OP_reg14 = 0x5E, // Contents of reg14 DW_OP_reg15 = 0x5F, // Contents of reg15 DW_OP_reg16 = 0x60, // Contents of reg16 DW_OP_reg17 = 0x61, // Contents of reg17 DW_OP_reg18 = 0x62, // Contents of reg18 DW_OP_reg19 = 0x63, // Contents of reg19 DW_OP_reg20 = 0x64, // Contents of reg20 DW_OP_reg21 = 0x65, // Contents of reg21 DW_OP_reg22 = 0x66, // Contents of reg22 DW_OP_reg23 = 0x67, // Contents of reg23 DW_OP_reg24 = 0x68, // Contents of reg24 DW_OP_reg25 = 0x69, // Contents of reg25 DW_OP_reg26 = 0x6A, // Contents of reg26 DW_OP_reg27 = 0x6B, // Contents of reg27 DW_OP_reg28 = 0x6C, // Contents of reg28 DW_OP_reg29 = 0x6D, // Contents of reg29 DW_OP_reg30 = 0x6E, // Contents of reg30 DW_OP_reg31 = 0x6F, // Contents of reg31 DW_OP_breg0 = 0x70, // base register 0 + SLEB128 offset DW_OP_breg1 = 0x71, // base register 1 + SLEB128 offset DW_OP_breg2 = 0x72, // base register 2 + SLEB128 offset DW_OP_breg3 = 0x73, // base register 3 + SLEB128 offset DW_OP_breg4 = 0x74, // base register 4 + SLEB128 offset DW_OP_breg5 = 0x75, // base register 5 + SLEB128 offset DW_OP_breg6 = 0x76, // base register 6 + SLEB128 offset DW_OP_breg7 = 0x77, // base register 7 + SLEB128 offset DW_OP_breg8 = 0x78, // base register 8 + SLEB128 offset DW_OP_breg9 = 0x79, // base register 9 + SLEB128 offset DW_OP_breg10 = 0x7A, // base register 10 + SLEB128 offset DW_OP_breg11 = 0x7B, // base register 11 + SLEB128 offset DW_OP_breg12 = 0x7C, // base register 12 + SLEB128 offset DW_OP_breg13 = 0x7D, // base register 13 + SLEB128 offset DW_OP_breg14 = 0x7E, // base register 14 + SLEB128 offset DW_OP_breg15 = 0x7F, // base register 15 + SLEB128 offset DW_OP_breg16 = 0x80, // base register 16 + SLEB128 offset DW_OP_breg17 = 0x81, // base register 17 + SLEB128 offset DW_OP_breg18 = 0x82, // base register 18 + SLEB128 offset DW_OP_breg19 = 0x83, // base register 19 + SLEB128 offset DW_OP_breg20 = 0x84, // base register 20 + SLEB128 offset DW_OP_breg21 = 0x85, // base register 21 + SLEB128 offset DW_OP_breg22 = 0x86, // base register 22 + SLEB128 offset DW_OP_breg23 = 0x87, // base register 23 + SLEB128 offset DW_OP_breg24 = 0x88, // base register 24 + SLEB128 offset DW_OP_breg25 = 0x89, // base register 25 + SLEB128 offset DW_OP_breg26 = 0x8A, // base register 26 + SLEB128 offset DW_OP_breg27 = 0x8B, // base register 27 + SLEB128 offset DW_OP_breg28 = 0x8C, // base register 28 + SLEB128 offset DW_OP_breg29 = 0x8D, // base register 29 + SLEB128 offset DW_OP_breg30 = 0x8E, // base register 30 + SLEB128 offset DW_OP_breg31 = 0x8F, // base register 31 + SLEB128 offset DW_OP_regx = 0x90, // ULEB128 register DW_OP_fbreg = 0x91, // SLEB128 offset DW_OP_bregx = 0x92, // ULEB128 register followed by SLEB128 offset DW_OP_piece = 0x93, // ULEB128 size of piece addressed DW_OP_deref_size = 0x94, // 1-byte size of data retrieved DW_OP_xderef_size = 0x95, // 1-byte size of data retrieved DW_OP_nop = 0x96, DW_OP_push_object_addres = 0x97, DW_OP_call2 = 0x98, // 2-byte offset of DIE DW_OP_call4 = 0x99, // 4-byte offset of DIE DW_OP_call_ref = 0x9A, // 4- or 8-byte offset of DIE DW_OP_lo_user = 0xE0, DW_OP_APPLE_uninit = 0xF0, DW_OP_hi_user = 0xFF }; #endif Index: projects/clang900-import/contrib/libunwind/src/libunwind.cpp =================================================================== --- projects/clang900-import/contrib/libunwind/src/libunwind.cpp (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/libunwind.cpp (revision 351404) @@ -1,412 +1,326 @@ //===--------------------------- libunwind.cpp ----------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // Implements unw_* functions from // //===----------------------------------------------------------------------===// #include -#ifndef NDEBUG -#include // getenv -#endif -#include -#include - #include "libunwind_ext.h" #include "config.h" #include #if !defined(__USING_SJLJ_EXCEPTIONS__) #include "AddressSpace.hpp" #include "UnwindCursor.hpp" using namespace libunwind; /// internal object to represent this processes address space LocalAddressSpace LocalAddressSpace::sThisAddressSpace; _LIBUNWIND_EXPORT unw_addr_space_t unw_local_addr_space = (unw_addr_space_t)&LocalAddressSpace::sThisAddressSpace; -/// record the registers and stack position of the caller -extern int unw_getcontext(unw_context_t *); -// note: unw_getcontext() implemented in assembly - /// Create a cursor of a thread in this process given 'context' recorded by -/// unw_getcontext(). -_LIBUNWIND_EXPORT int unw_init_local(unw_cursor_t *cursor, - unw_context_t *context) { - _LIBUNWIND_TRACE_API("unw_init_local(cursor=%p, context=%p)", +/// __unw_getcontext(). +_LIBUNWIND_HIDDEN int __unw_init_local(unw_cursor_t *cursor, + unw_context_t *context) { + _LIBUNWIND_TRACE_API("__unw_init_local(cursor=%p, context=%p)", static_cast(cursor), static_cast(context)); #if defined(__i386__) # define REGISTER_KIND Registers_x86 #elif defined(__x86_64__) # define REGISTER_KIND Registers_x86_64 #elif defined(__powerpc64__) # define REGISTER_KIND Registers_ppc64 #elif defined(__ppc__) # define REGISTER_KIND Registers_ppc #elif defined(__aarch64__) # define REGISTER_KIND Registers_arm64 #elif defined(__arm__) # define REGISTER_KIND Registers_arm #elif defined(__or1k__) # define REGISTER_KIND Registers_or1k #elif defined(__riscv) # define REGISTER_KIND Registers_riscv #elif defined(__mips__) && defined(_ABIO32) && _MIPS_SIM == _ABIO32 # define REGISTER_KIND Registers_mips_o32 #elif defined(__mips64) # define REGISTER_KIND Registers_mips_newabi #elif defined(__mips__) # warning The MIPS architecture is not supported with this ABI and environment! #elif defined(__sparc__) # define REGISTER_KIND Registers_sparc #else # error Architecture not supported #endif // Use "placement new" to allocate UnwindCursor in the cursor buffer. - new ((void *)cursor) UnwindCursor( - context, LocalAddressSpace::sThisAddressSpace); + new (reinterpret_cast *>(cursor)) + UnwindCursor( + context, LocalAddressSpace::sThisAddressSpace); #undef REGISTER_KIND AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor; co->setInfoBasedOnIPRegister(); return UNW_ESUCCESS; } +_LIBUNWIND_WEAK_ALIAS(__unw_init_local, unw_init_local) -#ifdef UNW_REMOTE -/// Create a cursor into a thread in another process. -_LIBUNWIND_EXPORT int unw_init_remote_thread(unw_cursor_t *cursor, - unw_addr_space_t as, - void *arg) { - // special case: unw_init_remote(xx, unw_local_addr_space, xx) - if (as == (unw_addr_space_t)&LocalAddressSpace::sThisAddressSpace) - return unw_init_local(cursor, NULL); //FIXME - - // use "placement new" to allocate UnwindCursor in the cursor buffer - switch (as->cpuType) { - case CPU_TYPE_I386: - new ((void *)cursor) - UnwindCursor>, - Registers_x86>(((unw_addr_space_i386 *)as)->oas, arg); - break; - case CPU_TYPE_X86_64: - new ((void *)cursor) - UnwindCursor>, - Registers_x86_64>(((unw_addr_space_x86_64 *)as)->oas, arg); - break; - case CPU_TYPE_POWERPC: - new ((void *)cursor) - UnwindCursor>, - Registers_ppc>(((unw_addr_space_ppc *)as)->oas, arg); - break; - default: - return UNW_EUNSPEC; - } - return UNW_ESUCCESS; -} - - -static bool is64bit(task_t task) { - return false; // FIXME -} - -/// Create an address_space object for use in examining another task. -_LIBUNWIND_EXPORT unw_addr_space_t unw_create_addr_space_for_task(task_t task) { -#if __i386__ - if (is64bit(task)) { - unw_addr_space_x86_64 *as = new unw_addr_space_x86_64(task); - as->taskPort = task; - as->cpuType = CPU_TYPE_X86_64; - //as->oas - } else { - unw_addr_space_i386 *as = new unw_addr_space_i386(task); - as->taskPort = task; - as->cpuType = CPU_TYPE_I386; - //as->oas - } -#else -// FIXME -#endif -} - - -/// Delete an address_space object. -_LIBUNWIND_EXPORT void unw_destroy_addr_space(unw_addr_space_t asp) { - switch (asp->cpuType) { -#if __i386__ || __x86_64__ - case CPU_TYPE_I386: { - unw_addr_space_i386 *as = (unw_addr_space_i386 *)asp; - delete as; - } - break; - case CPU_TYPE_X86_64: { - unw_addr_space_x86_64 *as = (unw_addr_space_x86_64 *)asp; - delete as; - } - break; -#endif - case CPU_TYPE_POWERPC: { - unw_addr_space_ppc *as = (unw_addr_space_ppc *)asp; - delete as; - } - break; - } -} -#endif // UNW_REMOTE - - /// Get value of specified register at cursor position in stack frame. -_LIBUNWIND_EXPORT int unw_get_reg(unw_cursor_t *cursor, unw_regnum_t regNum, - unw_word_t *value) { - _LIBUNWIND_TRACE_API("unw_get_reg(cursor=%p, regNum=%d, &value=%p)", +_LIBUNWIND_HIDDEN int __unw_get_reg(unw_cursor_t *cursor, unw_regnum_t regNum, + unw_word_t *value) { + _LIBUNWIND_TRACE_API("__unw_get_reg(cursor=%p, regNum=%d, &value=%p)", static_cast(cursor), regNum, static_cast(value)); AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor; if (co->validReg(regNum)) { *value = co->getReg(regNum); return UNW_ESUCCESS; } return UNW_EBADREG; } +_LIBUNWIND_WEAK_ALIAS(__unw_get_reg, unw_get_reg) - /// Set value of specified register at cursor position in stack frame. -_LIBUNWIND_EXPORT int unw_set_reg(unw_cursor_t *cursor, unw_regnum_t regNum, - unw_word_t value) { - _LIBUNWIND_TRACE_API("unw_set_reg(cursor=%p, regNum=%d, value=0x%" PRIxPTR ")", +_LIBUNWIND_HIDDEN int __unw_set_reg(unw_cursor_t *cursor, unw_regnum_t regNum, + unw_word_t value) { + _LIBUNWIND_TRACE_API("__unw_set_reg(cursor=%p, regNum=%d, value=0x%" PRIxPTR + ")", static_cast(cursor), regNum, value); typedef LocalAddressSpace::pint_t pint_t; AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor; if (co->validReg(regNum)) { co->setReg(regNum, (pint_t)value); // specical case altering IP to re-find info (being called by personality // function) if (regNum == UNW_REG_IP) { unw_proc_info_t info; // First, get the FDE for the old location and then update it. co->getInfo(&info); co->setInfoBasedOnIPRegister(false); // If the original call expects stack adjustment, perform this now. // Normal frame unwinding would have included the offset already in the // CFA computation. // Note: for PA-RISC and other platforms where the stack grows up, // this should actually be - info.gp. LLVM doesn't currently support // any such platforms and Clang doesn't export a macro for them. if (info.gp) co->setReg(UNW_REG_SP, co->getReg(UNW_REG_SP) + info.gp); } return UNW_ESUCCESS; } return UNW_EBADREG; } +_LIBUNWIND_WEAK_ALIAS(__unw_set_reg, unw_set_reg) - /// Get value of specified float register at cursor position in stack frame. -_LIBUNWIND_EXPORT int unw_get_fpreg(unw_cursor_t *cursor, unw_regnum_t regNum, - unw_fpreg_t *value) { - _LIBUNWIND_TRACE_API("unw_get_fpreg(cursor=%p, regNum=%d, &value=%p)", +_LIBUNWIND_HIDDEN int __unw_get_fpreg(unw_cursor_t *cursor, unw_regnum_t regNum, + unw_fpreg_t *value) { + _LIBUNWIND_TRACE_API("__unw_get_fpreg(cursor=%p, regNum=%d, &value=%p)", static_cast(cursor), regNum, static_cast(value)); AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor; if (co->validFloatReg(regNum)) { *value = co->getFloatReg(regNum); return UNW_ESUCCESS; } return UNW_EBADREG; } +_LIBUNWIND_WEAK_ALIAS(__unw_get_fpreg, unw_get_fpreg) - /// Set value of specified float register at cursor position in stack frame. -_LIBUNWIND_EXPORT int unw_set_fpreg(unw_cursor_t *cursor, unw_regnum_t regNum, - unw_fpreg_t value) { +_LIBUNWIND_HIDDEN int __unw_set_fpreg(unw_cursor_t *cursor, unw_regnum_t regNum, + unw_fpreg_t value) { #if defined(_LIBUNWIND_ARM_EHABI) - _LIBUNWIND_TRACE_API("unw_set_fpreg(cursor=%p, regNum=%d, value=%llX)", + _LIBUNWIND_TRACE_API("__unw_set_fpreg(cursor=%p, regNum=%d, value=%llX)", static_cast(cursor), regNum, value); #else - _LIBUNWIND_TRACE_API("unw_set_fpreg(cursor=%p, regNum=%d, value=%g)", + _LIBUNWIND_TRACE_API("__unw_set_fpreg(cursor=%p, regNum=%d, value=%g)", static_cast(cursor), regNum, value); #endif AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor; if (co->validFloatReg(regNum)) { co->setFloatReg(regNum, value); return UNW_ESUCCESS; } return UNW_EBADREG; } +_LIBUNWIND_WEAK_ALIAS(__unw_set_fpreg, unw_set_fpreg) - /// Move cursor to next frame. -_LIBUNWIND_EXPORT int unw_step(unw_cursor_t *cursor) { - _LIBUNWIND_TRACE_API("unw_step(cursor=%p)", static_cast(cursor)); +_LIBUNWIND_HIDDEN int __unw_step(unw_cursor_t *cursor) { + _LIBUNWIND_TRACE_API("__unw_step(cursor=%p)", static_cast(cursor)); AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor; return co->step(); } +_LIBUNWIND_WEAK_ALIAS(__unw_step, unw_step) - /// Get unwind info at cursor position in stack frame. -_LIBUNWIND_EXPORT int unw_get_proc_info(unw_cursor_t *cursor, - unw_proc_info_t *info) { - _LIBUNWIND_TRACE_API("unw_get_proc_info(cursor=%p, &info=%p)", +_LIBUNWIND_HIDDEN int __unw_get_proc_info(unw_cursor_t *cursor, + unw_proc_info_t *info) { + _LIBUNWIND_TRACE_API("__unw_get_proc_info(cursor=%p, &info=%p)", static_cast(cursor), static_cast(info)); AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor; co->getInfo(info); if (info->end_ip == 0) return UNW_ENOINFO; else return UNW_ESUCCESS; } +_LIBUNWIND_WEAK_ALIAS(__unw_get_proc_info, unw_get_proc_info) - /// Resume execution at cursor position (aka longjump). -_LIBUNWIND_EXPORT int unw_resume(unw_cursor_t *cursor) { - _LIBUNWIND_TRACE_API("unw_resume(cursor=%p)", static_cast(cursor)); +_LIBUNWIND_HIDDEN int __unw_resume(unw_cursor_t *cursor) { + _LIBUNWIND_TRACE_API("__unw_resume(cursor=%p)", static_cast(cursor)); AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor; co->jumpto(); return UNW_EUNSPEC; } +_LIBUNWIND_WEAK_ALIAS(__unw_resume, unw_resume) - /// Get name of function at cursor position in stack frame. -_LIBUNWIND_EXPORT int unw_get_proc_name(unw_cursor_t *cursor, char *buf, - size_t bufLen, unw_word_t *offset) { - _LIBUNWIND_TRACE_API("unw_get_proc_name(cursor=%p, &buf=%p, bufLen=%lu)", +_LIBUNWIND_HIDDEN int __unw_get_proc_name(unw_cursor_t *cursor, char *buf, + size_t bufLen, unw_word_t *offset) { + _LIBUNWIND_TRACE_API("__unw_get_proc_name(cursor=%p, &buf=%p, bufLen=%lu)", static_cast(cursor), static_cast(buf), static_cast(bufLen)); AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor; if (co->getFunctionName(buf, bufLen, offset)) return UNW_ESUCCESS; else return UNW_EUNSPEC; } +_LIBUNWIND_WEAK_ALIAS(__unw_get_proc_name, unw_get_proc_name) - /// Checks if a register is a floating-point register. -_LIBUNWIND_EXPORT int unw_is_fpreg(unw_cursor_t *cursor, unw_regnum_t regNum) { - _LIBUNWIND_TRACE_API("unw_is_fpreg(cursor=%p, regNum=%d)", +_LIBUNWIND_HIDDEN int __unw_is_fpreg(unw_cursor_t *cursor, + unw_regnum_t regNum) { + _LIBUNWIND_TRACE_API("__unw_is_fpreg(cursor=%p, regNum=%d)", static_cast(cursor), regNum); AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor; return co->validFloatReg(regNum); } +_LIBUNWIND_WEAK_ALIAS(__unw_is_fpreg, unw_is_fpreg) - /// Checks if a register is a floating-point register. -_LIBUNWIND_EXPORT const char *unw_regname(unw_cursor_t *cursor, - unw_regnum_t regNum) { - _LIBUNWIND_TRACE_API("unw_regname(cursor=%p, regNum=%d)", +_LIBUNWIND_HIDDEN const char *__unw_regname(unw_cursor_t *cursor, + unw_regnum_t regNum) { + _LIBUNWIND_TRACE_API("__unw_regname(cursor=%p, regNum=%d)", static_cast(cursor), regNum); AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor; return co->getRegisterName(regNum); } +_LIBUNWIND_WEAK_ALIAS(__unw_regname, unw_regname) - /// Checks if current frame is signal trampoline. -_LIBUNWIND_EXPORT int unw_is_signal_frame(unw_cursor_t *cursor) { - _LIBUNWIND_TRACE_API("unw_is_signal_frame(cursor=%p)", +_LIBUNWIND_HIDDEN int __unw_is_signal_frame(unw_cursor_t *cursor) { + _LIBUNWIND_TRACE_API("__unw_is_signal_frame(cursor=%p)", static_cast(cursor)); AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor; return co->isSignalFrame(); } +_LIBUNWIND_WEAK_ALIAS(__unw_is_signal_frame, unw_is_signal_frame) #ifdef __arm__ // Save VFP registers d0-d15 using FSTMIADX instead of FSTMIADD -_LIBUNWIND_EXPORT void unw_save_vfp_as_X(unw_cursor_t *cursor) { - _LIBUNWIND_TRACE_API("unw_fpreg_save_vfp_as_X(cursor=%p)", +_LIBUNWIND_HIDDEN void __unw_save_vfp_as_X(unw_cursor_t *cursor) { + _LIBUNWIND_TRACE_API("__unw_get_fpreg_save_vfp_as_X(cursor=%p)", static_cast(cursor)); AbstractUnwindCursor *co = (AbstractUnwindCursor *)cursor; return co->saveVFPAsX(); } +_LIBUNWIND_WEAK_ALIAS(__unw_save_vfp_as_X, unw_save_vfp_as_X) #endif #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) /// SPI: walks cached DWARF entries -_LIBUNWIND_EXPORT void unw_iterate_dwarf_unwind_cache(void (*func)( +_LIBUNWIND_HIDDEN void __unw_iterate_dwarf_unwind_cache(void (*func)( unw_word_t ip_start, unw_word_t ip_end, unw_word_t fde, unw_word_t mh)) { - _LIBUNWIND_TRACE_API("unw_iterate_dwarf_unwind_cache(func=%p)", + _LIBUNWIND_TRACE_API("__unw_iterate_dwarf_unwind_cache(func=%p)", reinterpret_cast(func)); DwarfFDECache::iterateCacheEntries(func); } +_LIBUNWIND_WEAK_ALIAS(__unw_iterate_dwarf_unwind_cache, + unw_iterate_dwarf_unwind_cache) - /// IPI: for __register_frame() -void _unw_add_dynamic_fde(unw_word_t fde) { +void __unw_add_dynamic_fde(unw_word_t fde) { CFI_Parser::FDE_Info fdeInfo; CFI_Parser::CIE_Info cieInfo; const char *message = CFI_Parser::decodeFDE( LocalAddressSpace::sThisAddressSpace, (LocalAddressSpace::pint_t) fde, &fdeInfo, &cieInfo); if (message == NULL) { // dynamically registered FDEs don't have a mach_header group they are in. // Use fde as mh_group unw_word_t mh_group = fdeInfo.fdeStart; DwarfFDECache::add((LocalAddressSpace::pint_t)mh_group, fdeInfo.pcStart, fdeInfo.pcEnd, fdeInfo.fdeStart); } else { - _LIBUNWIND_DEBUG_LOG("_unw_add_dynamic_fde: bad fde: %s", message); + _LIBUNWIND_DEBUG_LOG("__unw_add_dynamic_fde: bad fde: %s", message); } } /// IPI: for __deregister_frame() -void _unw_remove_dynamic_fde(unw_word_t fde) { +void __unw_remove_dynamic_fde(unw_word_t fde) { // fde is own mh_group DwarfFDECache::removeAllIn((LocalAddressSpace::pint_t)fde); } #endif // defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) #endif // !defined(__USING_SJLJ_EXCEPTIONS__) // Add logging hooks in Debug builds only #ifndef NDEBUG #include _LIBUNWIND_HIDDEN bool logAPIs() { // do manual lock to avoid use of _cxa_guard_acquire or initializers static bool checked = false; static bool log = false; if (!checked) { log = (getenv("LIBUNWIND_PRINT_APIS") != NULL); checked = true; } return log; } _LIBUNWIND_HIDDEN bool logUnwinding() { // do manual lock to avoid use of _cxa_guard_acquire or initializers static bool checked = false; static bool log = false; if (!checked) { log = (getenv("LIBUNWIND_PRINT_UNWINDING") != NULL); checked = true; } return log; } _LIBUNWIND_HIDDEN bool logDWARF() { // do manual lock to avoid use of _cxa_guard_acquire or initializers static bool checked = false; static bool log = false; if (!checked) { log = (getenv("LIBUNWIND_PRINT_DWARF") != NULL); checked = true; } return log; } #endif // NDEBUG Index: projects/clang900-import/contrib/libunwind/src/libunwind_ext.h =================================================================== --- projects/clang900-import/contrib/libunwind/src/libunwind_ext.h (revision 351403) +++ projects/clang900-import/contrib/libunwind/src/libunwind_ext.h (revision 351404) @@ -1,47 +1,65 @@ //===------------------------ libunwind_ext.h -----------------------------===// // -// The LLVM Compiler Infrastructure +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. // -// // Extensions to libunwind API. // //===----------------------------------------------------------------------===// #ifndef __LIBUNWIND_EXT__ #define __LIBUNWIND_EXT__ #include "config.h" #include #include #define UNW_STEP_SUCCESS 1 #define UNW_STEP_END 0 #ifdef __cplusplus extern "C" { #endif + +extern int __unw_getcontext(unw_context_t *); +extern int __unw_init_local(unw_cursor_t *, unw_context_t *); +extern int __unw_step(unw_cursor_t *); +extern int __unw_get_reg(unw_cursor_t *, unw_regnum_t, unw_word_t *); +extern int __unw_get_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t *); +extern int __unw_set_reg(unw_cursor_t *, unw_regnum_t, unw_word_t); +extern int __unw_set_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t); +extern int __unw_resume(unw_cursor_t *); + +#ifdef __arm__ +/* Save VFP registers in FSTMX format (instead of FSTMD). */ +extern void __unw_save_vfp_as_X(unw_cursor_t *); +#endif + +extern const char *__unw_regname(unw_cursor_t *, unw_regnum_t); +extern int __unw_get_proc_info(unw_cursor_t *, unw_proc_info_t *); +extern int __unw_is_fpreg(unw_cursor_t *, unw_regnum_t); +extern int __unw_is_signal_frame(unw_cursor_t *); +extern int __unw_get_proc_name(unw_cursor_t *, char *, size_t, unw_word_t *); + // SPI -extern void unw_iterate_dwarf_unwind_cache(void (*func)(unw_word_t ip_start, - unw_word_t ip_end, - unw_word_t fde, - unw_word_t mh)); +extern void __unw_iterate_dwarf_unwind_cache(void (*func)( + unw_word_t ip_start, unw_word_t ip_end, unw_word_t fde, unw_word_t mh)); // IPI -extern void _unw_add_dynamic_fde(unw_word_t fde); -extern void _unw_remove_dynamic_fde(unw_word_t fde); +extern void __unw_add_dynamic_fde(unw_word_t fde); +extern void __unw_remove_dynamic_fde(unw_word_t fde); #if defined(_LIBUNWIND_ARM_EHABI) extern const uint32_t* decode_eht_entry(const uint32_t*, size_t*, size_t*); extern _Unwind_Reason_Code _Unwind_VRS_Interpret(_Unwind_Context *context, const uint32_t *data, size_t offset, size_t len); #endif #ifdef __cplusplus } #endif #endif // __LIBUNWIND_EXT__ Index: projects/clang900-import/contrib/libunwind =================================================================== --- projects/clang900-import/contrib/libunwind (revision 351403) +++ projects/clang900-import/contrib/libunwind (revision 351404) Property changes on: projects/clang900-import/contrib/libunwind ___________________________________________________________________ Modified: svn:mergeinfo ## -0,0 +0,1 ## Merged /vendor/llvm-libunwind/dist:r344968-351402