| //===-- 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() { |
| cur_thread_init(); |
| Initialize(cur_thread()); |
| } |
| |
| void __tsan_flush_memory() { |
| FlushShadowMemory(); |
| } |
| |
| void __tsan_read16(void *addr) { |
| MemoryRead(cur_thread(), CALLERPC, (uptr)addr, kSizeLog8); |
| MemoryRead(cur_thread(), CALLERPC, (uptr)addr + 8, kSizeLog8); |
| } |
| |
| void __tsan_write16(void *addr) { |
| MemoryWrite(cur_thread(), CALLERPC, (uptr)addr, kSizeLog8); |
| MemoryWrite(cur_thread(), CALLERPC, (uptr)addr + 8, kSizeLog8); |
| } |
| |
| void __tsan_read16_pc(void *addr, void *pc) { |
| MemoryRead(cur_thread(), STRIP_PC(pc), (uptr)addr, kSizeLog8); |
| MemoryRead(cur_thread(), STRIP_PC(pc), (uptr)addr + 8, kSizeLog8); |
| } |
| |
| void __tsan_write16_pc(void *addr, void *pc) { |
| MemoryWrite(cur_thread(), STRIP_PC(pc), (uptr)addr, kSizeLog8); |
| MemoryWrite(cur_thread(), STRIP_PC(pc), (uptr)addr + 8, kSizeLog8); |
| } |
| |
| // __tsan_unaligned_read/write calls are emitted by compiler. |
| |
| void __tsan_unaligned_read2(const void *addr) { |
| UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, false, false); |
| } |
| |
| void __tsan_unaligned_read4(const void *addr) { |
| UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, false, false); |
| } |
| |
| void __tsan_unaligned_read8(const void *addr) { |
| UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, false, false); |
| } |
| |
| void __tsan_unaligned_read16(const void *addr) { |
| UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 16, false, false); |
| } |
| |
| void __tsan_unaligned_write2(void *addr) { |
| UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, true, false); |
| } |
| |
| void __tsan_unaligned_write4(void *addr) { |
| UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, true, false); |
| } |
| |
| void __tsan_unaligned_write8(void *addr) { |
| UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, true, false); |
| } |
| |
| void __tsan_unaligned_write16(void *addr) { |
| UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 16, true, false); |
| } |
| |
| // __sanitizer_unaligned_load/store are for user instrumentation. |
| |
| extern "C" { |
| SANITIZER_INTERFACE_ATTRIBUTE |
| u16 __sanitizer_unaligned_load16(const uu16 *addr) { |
| __tsan_unaligned_read2(addr); |
| return *addr; |
| } |
| |
| SANITIZER_INTERFACE_ATTRIBUTE |
| u32 __sanitizer_unaligned_load32(const uu32 *addr) { |
| __tsan_unaligned_read4(addr); |
| return *addr; |
| } |
| |
| SANITIZER_INTERFACE_ATTRIBUTE |
| u64 __sanitizer_unaligned_load64(const uu64 *addr) { |
| __tsan_unaligned_read8(addr); |
| return *addr; |
| } |
| |
| SANITIZER_INTERFACE_ATTRIBUTE |
| void __sanitizer_unaligned_store16(uu16 *addr, u16 v) { |
| __tsan_unaligned_write2(addr); |
| *addr = v; |
| } |
| |
| SANITIZER_INTERFACE_ATTRIBUTE |
| void __sanitizer_unaligned_store32(uu32 *addr, u32 v) { |
| __tsan_unaligned_write4(addr); |
| *addr = v; |
| } |
| |
| SANITIZER_INTERFACE_ATTRIBUTE |
| void __sanitizer_unaligned_store64(uu64 *addr, u64 v) { |
| __tsan_unaligned_write8(addr); |
| *addr = v; |
| } |
| |
| 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); |
| } |