diff --git a/include/unwind.h b/include/unwind.h index 5a07fd819f50..214fb43730aa 100644 --- a/include/unwind.h +++ b/include/unwind.h @@ -1,160 +1,160 @@ /* $FreeBSD$ */ /*- libunwind - a platform-independent unwind library SPDX-License-Identifier: ISC Copyright (C) 2003 Hewlett-Packard Co Contributed by David Mosberger-Tang This file is part of libunwind. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #ifndef _UNWIND_H #define _UNWIND_H #include #ifdef __cplusplus extern "C" { #endif /* Minimal interface as per C++ ABI draft standard: http://www.codesourcery.com/cxx-abi/abi-eh.html */ typedef enum { _URC_NO_REASON = 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 } _Unwind_Reason_Code; typedef int _Unwind_Action; #define _UA_SEARCH_PHASE 1 #define _UA_CLEANUP_PHASE 2 #define _UA_HANDLER_FRAME 4 #define _UA_FORCE_UNWIND 8 struct _Unwind_Context; /* opaque data-structure */ struct _Unwind_Exception; /* forward-declaration */ typedef void (*_Unwind_Exception_Cleanup_Fn) (_Unwind_Reason_Code, struct _Unwind_Exception *); typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) (int, _Unwind_Action, - __int64_t, + __uint64_t, struct _Unwind_Exception *, struct _Unwind_Context *, void *); /* The C++ ABI requires exception_class, private_1, and private_2 to be of type uint64 and the entire structure to be double-word-aligned, but that seems a bit overly IA-64-specific. Using "unsigned long" instead should give us the desired effect on IA-64, while being more general. */ struct _Unwind_Exception { - __int64_t exception_class; + __uint64_t exception_class; _Unwind_Exception_Cleanup_Fn exception_cleanup; unsigned long private_1; unsigned long private_2; }; extern _Unwind_Reason_Code _Unwind_RaiseException (struct _Unwind_Exception *); extern _Unwind_Reason_Code _Unwind_ForcedUnwind (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *); extern void _Unwind_Resume (struct _Unwind_Exception *); extern void _Unwind_DeleteException (struct _Unwind_Exception *); extern unsigned long _Unwind_GetGR (struct _Unwind_Context *, int); extern void _Unwind_SetGR (struct _Unwind_Context *, int, unsigned long); extern unsigned long _Unwind_GetIP (struct _Unwind_Context *); extern unsigned long _Unwind_GetIPInfo (struct _Unwind_Context *, int *); extern void _Unwind_SetIP (struct _Unwind_Context *, unsigned long); extern unsigned long _Unwind_GetLanguageSpecificData (struct _Unwind_Context*); extern unsigned long _Unwind_GetRegionStart (struct _Unwind_Context *); #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) /* Callback for _Unwind_Backtrace(). The backtrace stops immediately if the callback returns any value other than _URC_NO_REASON. */ typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn) (struct _Unwind_Context *, void *); /* See http://gcc.gnu.org/ml/gcc-patches/2001-09/msg00082.html for why _UA_END_OF_STACK exists. */ # define _UA_END_OF_STACK 16 /* If the unwind was initiated due to a forced unwind, resume that operation, else re-raise the exception. This is used by __cxa_rethrow(). */ extern _Unwind_Reason_Code _Unwind_Resume_or_Rethrow (struct _Unwind_Exception *); /* See http://gcc.gnu.org/ml/gcc-patches/2003-09/msg00154.html for why _Unwind_GetBSP() exists. */ extern unsigned long _Unwind_GetBSP (struct _Unwind_Context *); /* Return the "canonical frame address" for the given context. This is used by NPTL... */ extern unsigned long _Unwind_GetCFA (struct _Unwind_Context *); /* Return the base-address for data references. */ extern unsigned long _Unwind_GetDataRelBase (struct _Unwind_Context *); /* Return the base-address for text references. */ extern unsigned long _Unwind_GetTextRelBase (struct _Unwind_Context *); /* Call _Unwind_Trace_Fn once for each stack-frame, without doing any cleanup. The first frame for which the callback is invoked is the one for the caller of _Unwind_Backtrace(). _Unwind_Backtrace() returns _URC_END_OF_STACK when the backtrace stopped due to reaching the end of the call-chain or _URC_FATAL_PHASE1_ERROR if it stops for any other reason. */ extern _Unwind_Reason_Code _Unwind_Backtrace (_Unwind_Trace_Fn, void *); /* Find the start-address of the procedure containing the specified IP or NULL if it cannot be found (e.g., because the function has no unwind info). Note: there is not necessarily a one-to-one correspondence between source-level functions and procedures: some functions don't have unwind-info and others are split into multiple procedures. */ extern void *_Unwind_FindEnclosingFunction (void *); /* See also Linux Standard Base Spec: http://www.linuxbase.org/spec/refspecs/LSB_1.3.0/gLSB/gLSB/libgcc-s.html */ #endif /* _GNU_SOURCE || _BSD_SOURCE */ #ifdef __cplusplus }; #endif #endif /* _UNWIND_H */ diff --git a/lib/libthr/thread/thr_exit.c b/lib/libthr/thread/thr_exit.c index 78497c4a206a..c1244962f192 100644 --- a/lib/libthr/thread/thr_exit.c +++ b/lib/libthr/thread/thr_exit.c @@ -1,330 +1,330 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1995-1998 John Birrell * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include "namespace.h" #include #ifdef _PTHREAD_FORCED_UNWIND #include #endif #include #include #include #include #include #include #include "un-namespace.h" #include "libc_private.h" #include "thr_private.h" static void exit_thread(void) __dead2; __weak_reference(_Tthr_exit, pthread_exit); __weak_reference(_Tthr_exit, _pthread_exit); #ifdef _PTHREAD_FORCED_UNWIND static int message_printed; static void thread_unwind(void) __dead2; #ifdef PIC static void thread_uw_init(void); static _Unwind_Reason_Code thread_unwind_stop(int version, _Unwind_Action actions, - int64_t exc_class, + uint64_t exc_class, struct _Unwind_Exception *exc_obj, struct _Unwind_Context *context, void *stop_parameter); /* unwind library pointers */ static _Unwind_Reason_Code (*uwl_forcedunwind)(struct _Unwind_Exception *, _Unwind_Stop_Fn, void *); static unsigned long (*uwl_getcfa)(struct _Unwind_Context *); static void thread_uw_init(void) { static int inited = 0; Dl_info dli; void *handle; void *forcedunwind, *getcfa; if (inited) return; handle = RTLD_DEFAULT; if ((forcedunwind = dlsym(handle, "_Unwind_ForcedUnwind")) != NULL) { if (dladdr(forcedunwind, &dli)) { /* * Make sure the address is always valid by holding the library, * also assume functions are in same library. */ if ((handle = dlopen(dli.dli_fname, RTLD_LAZY)) != NULL) { forcedunwind = dlsym(handle, "_Unwind_ForcedUnwind"); getcfa = dlsym(handle, "_Unwind_GetCFA"); if (forcedunwind != NULL && getcfa != NULL) { uwl_getcfa = getcfa; atomic_store_rel_ptr((volatile void *)&uwl_forcedunwind, (uintptr_t)forcedunwind); } else { dlclose(handle); } } } } inited = 1; } _Unwind_Reason_Code _Unwind_ForcedUnwind(struct _Unwind_Exception *ex, _Unwind_Stop_Fn stop_func, void *stop_arg) { return (*uwl_forcedunwind)(ex, stop_func, stop_arg); } unsigned long _Unwind_GetCFA(struct _Unwind_Context *context) { return (*uwl_getcfa)(context); } #else #pragma weak _Unwind_GetCFA #pragma weak _Unwind_ForcedUnwind #endif /* PIC */ static void thread_unwind_cleanup(_Unwind_Reason_Code code __unused, struct _Unwind_Exception *e __unused) { /* * Specification said that _Unwind_Resume should not be used here, * instead, user should rethrow the exception. For C++ user, they * should put "throw" sentence in catch(...) block. */ PANIC("exception should be rethrown"); } static _Unwind_Reason_Code thread_unwind_stop(int version __unused, _Unwind_Action actions, - int64_t exc_class __unused, + uint64_t exc_class __unused, struct _Unwind_Exception *exc_obj __unused, struct _Unwind_Context *context, void *stop_parameter __unused) { struct pthread *curthread = _get_curthread(); struct pthread_cleanup *cur; uintptr_t cfa; int done = 0; /* XXX assume stack grows down to lower address */ cfa = _Unwind_GetCFA(context); if (actions & _UA_END_OF_STACK || cfa >= (uintptr_t)curthread->unwind_stackend) { done = 1; } while ((cur = curthread->cleanup) != NULL && (done || (uintptr_t)cur <= cfa)) { __pthread_cleanup_pop_imp(1); } if (done) { /* Tell libc that it should call non-trivial TLS dtors. */ __cxa_thread_call_dtors(); exit_thread(); /* Never return! */ } return (_URC_NO_REASON); } static void thread_unwind(void) { struct pthread *curthread = _get_curthread(); curthread->ex.exception_class = 0; curthread->ex.exception_cleanup = thread_unwind_cleanup; _Unwind_ForcedUnwind(&curthread->ex, thread_unwind_stop, NULL); PANIC("_Unwind_ForcedUnwind returned"); } #endif void _thread_exitf(const char *fname, int lineno, const char *fmt, ...) { va_list ap; /* Write an error message to the standard error file descriptor: */ _thread_printf(STDERR_FILENO, "Fatal error '"); va_start(ap, fmt); _thread_vprintf(STDERR_FILENO, fmt, ap); va_end(ap); _thread_printf(STDERR_FILENO, "' at line %d in file %s (errno = %d)\n", lineno, fname, errno); abort(); } void _thread_exit(const char *fname, int lineno, const char *msg) { _thread_exitf(fname, lineno, "%s", msg); } void _Tthr_exit(void *status) { _pthread_exit_mask(status, NULL); } void _pthread_exit_mask(void *status, sigset_t *mask) { struct pthread *curthread = _get_curthread(); /* Check if this thread is already in the process of exiting: */ if (curthread->cancelling) PANIC("Thread %p has called " "pthread_exit() from a destructor. POSIX 1003.1 " "1996 s16.2.5.2 does not allow this!", curthread); /* Flag this thread as exiting. */ curthread->cancelling = 1; curthread->no_cancel = 1; curthread->cancel_async = 0; curthread->cancel_point = 0; if (mask != NULL) __sys_sigprocmask(SIG_SETMASK, mask, NULL); if (curthread->unblock_sigcancel) { sigset_t set; curthread->unblock_sigcancel = 0; SIGEMPTYSET(set); SIGADDSET(set, SIGCANCEL); __sys_sigprocmask(SIG_UNBLOCK, mask, NULL); } /* Save the return value: */ curthread->ret = status; #ifdef _PTHREAD_FORCED_UNWIND #ifdef PIC thread_uw_init(); if (uwl_forcedunwind != NULL) { #else if (_Unwind_ForcedUnwind != NULL) { #endif if (curthread->unwind_disabled) { if (message_printed == 0) { message_printed = 1; _thread_printf(2, "Warning: old _pthread_cleanup_push was called, " "stack unwinding is disabled.\n"); } goto cleanup; } thread_unwind(); } else { cleanup: while (curthread->cleanup != NULL) { __pthread_cleanup_pop_imp(1); } __cxa_thread_call_dtors(); exit_thread(); } #else while (curthread->cleanup != NULL) { __pthread_cleanup_pop_imp(1); } __cxa_thread_call_dtors(); exit_thread(); #endif /* _PTHREAD_FORCED_UNWIND */ } static void exit_thread(void) { struct pthread *curthread = _get_curthread(); free(curthread->name); curthread->name = NULL; /* Check if there is thread specific data: */ if (curthread->specific != NULL) { /* Run the thread-specific data destructors: */ _thread_cleanupspecific(); } if (!_thr_isthreaded()) exit(0); if (atomic_fetchadd_int(&_thread_active_threads, -1) == 1) { exit(0); /* Never reach! */ } /* Tell malloc that the thread is exiting. */ _malloc_thread_cleanup(); THR_LOCK(curthread); curthread->state = PS_DEAD; if (curthread->flags & THR_FLAGS_NEED_SUSPEND) { curthread->cycle++; _thr_umtx_wake(&curthread->cycle, INT_MAX, 0); } if (!curthread->force_exit && SHOULD_REPORT_EVENT(curthread, TD_DEATH)) _thr_report_death(curthread); /* * Thread was created with initial refcount 1, we drop the * reference count to allow it to be garbage collected. */ curthread->refcount--; _thr_try_gc(curthread, curthread); /* thread lock released */ #if defined(_PTHREADS_INVARIANTS) if (THR_IN_CRITICAL(curthread)) PANIC("thread %p exits with resources held!", curthread); #endif /* * Kernel will do wakeup at the address, so joiner thread * will be resumed if it is sleeping at the address. */ thr_exit(&curthread->tid); PANIC("thr_exit() returned"); /* Never reach! */ }