93 lines · cpp
1//===-- tsan_interface.cpp ------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file is a part of ThreadSanitizer (TSan), a race detector.10//11//===----------------------------------------------------------------------===//12 13#include "tsan_interface.h"14#include "tsan_interface_ann.h"15#include "tsan_rtl.h"16#include "sanitizer_common/sanitizer_internal_defs.h"17#include "sanitizer_common/sanitizer_ptrauth.h"18 19#define CALLERPC ((uptr)__builtin_return_address(0))20 21using namespace __tsan;22 23void __tsan_init() { Initialize(cur_thread_init()); }24 25void __tsan_flush_memory() {26 FlushShadowMemory();27}28 29void __tsan_read16_pc(void *addr, void *pc) {30 uptr pc_no_pac = STRIP_PAC_PC(pc);31 ThreadState *thr = cur_thread();32 MemoryAccess(thr, pc_no_pac, (uptr)addr, 8, kAccessRead);33 MemoryAccess(thr, pc_no_pac, (uptr)addr + 8, 8, kAccessRead);34}35 36void __tsan_write16_pc(void *addr, void *pc) {37 uptr pc_no_pac = STRIP_PAC_PC(pc);38 ThreadState *thr = cur_thread();39 MemoryAccess(thr, pc_no_pac, (uptr)addr, 8, kAccessWrite);40 MemoryAccess(thr, pc_no_pac, (uptr)addr + 8, 8, kAccessWrite);41}42 43// __tsan_unaligned_read/write calls are emitted by compiler.44 45void __tsan_unaligned_read16(const void *addr) {46 uptr pc = CALLERPC;47 ThreadState *thr = cur_thread();48 UnalignedMemoryAccess(thr, pc, (uptr)addr, 8, kAccessRead);49 UnalignedMemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessRead);50}51 52void __tsan_unaligned_write16(void *addr) {53 uptr pc = CALLERPC;54 ThreadState *thr = cur_thread();55 UnalignedMemoryAccess(thr, pc, (uptr)addr, 8, kAccessWrite);56 UnalignedMemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessWrite);57}58 59extern "C" {60SANITIZER_INTERFACE_ATTRIBUTE61void *__tsan_get_current_fiber() {62 return cur_thread();63}64 65SANITIZER_INTERFACE_ATTRIBUTE66void *__tsan_create_fiber(unsigned flags) {67 return FiberCreate(cur_thread(), CALLERPC, flags);68}69 70SANITIZER_INTERFACE_ATTRIBUTE71void __tsan_destroy_fiber(void *fiber) {72 FiberDestroy(cur_thread(), CALLERPC, static_cast<ThreadState *>(fiber));73}74 75SANITIZER_INTERFACE_ATTRIBUTE76void __tsan_switch_to_fiber(void *fiber, unsigned flags) {77 FiberSwitch(cur_thread(), CALLERPC, static_cast<ThreadState *>(fiber), flags);78}79 80SANITIZER_INTERFACE_ATTRIBUTE81void __tsan_set_fiber_name(void *fiber, const char *name) {82 ThreadSetName(static_cast<ThreadState *>(fiber), name);83}84} // extern "C"85 86void __tsan_acquire(void *addr) {87 Acquire(cur_thread(), CALLERPC, (uptr)addr);88}89 90void __tsan_release(void *addr) {91 Release(cur_thread(), CALLERPC, (uptr)addr);92}93