| //===-- tsan_interface.cpp ------------------------------------------------===// |
| // |
| // 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 a part of ThreadSanitizer (TSan), a race detector. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "tsan_interface.h" |
| #include "tsan_interface_ann.h" |
| #include "tsan_rtl.h" |
| #include "sanitizer_common/sanitizer_internal_defs.h" |
| #include "sanitizer_common/sanitizer_ptrauth.h" |
| |
| #define CALLERPC ((uptr)__builtin_return_address(0)) |
| |
| using namespace __tsan; |
| |
| void __tsan_init() { Initialize(cur_thread_init()); } |
| |
| void __tsan_flush_memory() { |
| FlushShadowMemory(); |
| } |
| |
| void __tsan_read16_pc(void *addr, void *pc) { |
| uptr pc_no_pac = STRIP_PAC_PC(pc); |
| ThreadState *thr = cur_thread(); |
| MemoryAccess(thr, pc_no_pac, (uptr)addr, 8, kAccessRead); |
| MemoryAccess(thr, pc_no_pac, (uptr)addr + 8, 8, kAccessRead); |
| } |
| |
| void __tsan_write16_pc(void *addr, void *pc) { |
| uptr pc_no_pac = STRIP_PAC_PC(pc); |
| ThreadState *thr = cur_thread(); |
| MemoryAccess(thr, pc_no_pac, (uptr)addr, 8, kAccessWrite); |
| MemoryAccess(thr, pc_no_pac, (uptr)addr + 8, 8, kAccessWrite); |
| } |
| |
| // __tsan_unaligned_read/write calls are emitted by compiler. |
| |
| void __tsan_unaligned_read16(const void *addr) { |
| uptr pc = CALLERPC; |
| ThreadState *thr = cur_thread(); |
| UnalignedMemoryAccess(thr, pc, (uptr)addr, 8, kAccessRead); |
| UnalignedMemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessRead); |
| } |
| |
| void __tsan_unaligned_write16(void *addr) { |
| uptr pc = CALLERPC; |
| ThreadState *thr = cur_thread(); |
| UnalignedMemoryAccess(thr, pc, (uptr)addr, 8, kAccessWrite); |
| UnalignedMemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessWrite); |
| } |
| |
| extern "C" { |
| SANITIZER_INTERFACE_ATTRIBUTE |
| void *__tsan_get_current_fiber() { |
| return cur_thread(); |
| } |
| |
| SANITIZER_INTERFACE_ATTRIBUTE |
| void *__tsan_create_fiber(unsigned flags) { |
| return FiberCreate(cur_thread(), CALLERPC, flags); |
| } |
| |
| SANITIZER_INTERFACE_ATTRIBUTE |
| void __tsan_destroy_fiber(void *fiber) { |
| FiberDestroy(cur_thread(), CALLERPC, static_cast<ThreadState *>(fiber)); |
| } |
| |
| SANITIZER_INTERFACE_ATTRIBUTE |
| void __tsan_switch_to_fiber(void *fiber, unsigned flags) { |
| FiberSwitch(cur_thread(), CALLERPC, static_cast<ThreadState *>(fiber), flags); |
| } |
| |
| SANITIZER_INTERFACE_ATTRIBUTE |
| void __tsan_set_fiber_name(void *fiber, const char *name) { |
| ThreadSetName(static_cast<ThreadState *>(fiber), name); |
| } |
| } // extern "C" |
| |
| void __tsan_acquire(void *addr) { |
| Acquire(cur_thread(), CALLERPC, (uptr)addr); |
| } |
| |
| void __tsan_release(void *addr) { |
| Release(cur_thread(), CALLERPC, (uptr)addr); |
| } |