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head/sys/arm64/include/csan.h
| Property | Old Value | New Value |
|---|---|---|
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| /* $NetBSD: csan.h,v 1.2 2019/11/06 06:57:22 maxv Exp $ */ | |||||
| /* | |||||
| * Copyright (c) 2019 The NetBSD Foundation, Inc. | |||||
| * All rights reserved. | |||||
| * | |||||
| * This code is derived from software contributed to The NetBSD Foundation | |||||
| * by Maxime Villard. | |||||
| * | |||||
| * 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. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. | |||||
| * | |||||
| * $FreeBSD$ | |||||
| */ | |||||
| #include <machine/cpufunc.h> | |||||
| #include <machine/stack.h> | |||||
| #include <machine/vmparam.h> | |||||
| static inline bool | |||||
| kcsan_md_is_avail(void) | |||||
| { | |||||
| return true; | |||||
| } | |||||
| static inline void | |||||
| kcsan_md_disable_intrs(uint64_t *state) | |||||
| { | |||||
| *state = intr_disable(); | |||||
| } | |||||
| static inline void | |||||
| kcsan_md_enable_intrs(uint64_t *state) | |||||
| { | |||||
| intr_restore(*state); | |||||
| } | |||||
| static inline void | |||||
| kcsan_md_delay(uint64_t us) | |||||
| { | |||||
| DELAY(us); | |||||
| } | |||||
| static void | |||||
| kcsan_md_unwind(void) | |||||
| { | |||||
| #ifdef DDB | |||||
| c_db_sym_t sym; | |||||
| db_expr_t offset; | |||||
| const char *symname; | |||||
| #endif | |||||
| struct unwind_state frame; | |||||
| uint64_t sp; | |||||
| int nsym; | |||||
| __asm __volatile("mov %0, sp" : "=&r" (sp)); | |||||
| frame.sp = sp; | |||||
| frame.fp = (uint64_t)__builtin_frame_address(0); | |||||
| frame.pc = (uint64_t)kcsan_md_unwind; | |||||
| nsym = 0; | |||||
| while (1) { | |||||
| unwind_frame(&frame); | |||||
| if (!INKERNEL((vm_offset_t)frame.fp) || | |||||
| !INKERNEL((vm_offset_t)frame.pc)) | |||||
| break; | |||||
| #ifdef DDB | |||||
| sym = db_search_symbol((vm_offset_t)frame.pc, DB_STGY_PROC, | |||||
| &offset); | |||||
| db_symbol_values(sym, &symname, NULL); | |||||
| printf("#%d %p in %s+%#lx\n", nsym, (void *)frame.pc, | |||||
| symname, offset); | |||||
| #else | |||||
| printf("#%d %p\n", nsym, (void *)frame.pc); | |||||
| #endif | |||||
| nsym++; | |||||
| if (nsym >= 15) { | |||||
| break; | |||||
| } | |||||
| } | |||||
| } | |||||