158 lines
4.3 KiB
C++
158 lines
4.3 KiB
C++
//===-- tsan_interface.cpp ------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of ThreadSanitizer (TSan), a race detector.
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//
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//===----------------------------------------------------------------------===//
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#include "tsan_interface.h"
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#include "tsan_interface_ann.h"
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#include "tsan_rtl.h"
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#include "sanitizer_common/sanitizer_internal_defs.h"
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#include "sanitizer_common/sanitizer_ptrauth.h"
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#define CALLERPC ((uptr)__builtin_return_address(0))
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using namespace __tsan;
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void __tsan_init() {
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cur_thread_init();
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Initialize(cur_thread());
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}
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void __tsan_flush_memory() {
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FlushShadowMemory();
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}
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void __tsan_read16(void *addr) {
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MemoryRead(cur_thread(), CALLERPC, (uptr)addr, kSizeLog8);
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MemoryRead(cur_thread(), CALLERPC, (uptr)addr + 8, kSizeLog8);
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}
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void __tsan_write16(void *addr) {
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MemoryWrite(cur_thread(), CALLERPC, (uptr)addr, kSizeLog8);
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MemoryWrite(cur_thread(), CALLERPC, (uptr)addr + 8, kSizeLog8);
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}
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void __tsan_read16_pc(void *addr, void *pc) {
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MemoryRead(cur_thread(), STRIP_PC(pc), (uptr)addr, kSizeLog8);
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MemoryRead(cur_thread(), STRIP_PC(pc), (uptr)addr + 8, kSizeLog8);
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}
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void __tsan_write16_pc(void *addr, void *pc) {
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MemoryWrite(cur_thread(), STRIP_PC(pc), (uptr)addr, kSizeLog8);
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MemoryWrite(cur_thread(), STRIP_PC(pc), (uptr)addr + 8, kSizeLog8);
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}
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// __tsan_unaligned_read/write calls are emitted by compiler.
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void __tsan_unaligned_read2(const void *addr) {
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UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, false, false);
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}
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void __tsan_unaligned_read4(const void *addr) {
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UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, false, false);
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}
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void __tsan_unaligned_read8(const void *addr) {
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UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, false, false);
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}
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void __tsan_unaligned_read16(const void *addr) {
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UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 16, false, false);
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}
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void __tsan_unaligned_write2(void *addr) {
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UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, true, false);
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}
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void __tsan_unaligned_write4(void *addr) {
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UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, true, false);
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}
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void __tsan_unaligned_write8(void *addr) {
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UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, true, false);
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}
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void __tsan_unaligned_write16(void *addr) {
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UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 16, true, false);
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}
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// __sanitizer_unaligned_load/store are for user instrumentation.
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extern "C" {
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SANITIZER_INTERFACE_ATTRIBUTE
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u16 __sanitizer_unaligned_load16(const uu16 *addr) {
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__tsan_unaligned_read2(addr);
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return *addr;
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}
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SANITIZER_INTERFACE_ATTRIBUTE
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u32 __sanitizer_unaligned_load32(const uu32 *addr) {
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__tsan_unaligned_read4(addr);
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return *addr;
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}
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SANITIZER_INTERFACE_ATTRIBUTE
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u64 __sanitizer_unaligned_load64(const uu64 *addr) {
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__tsan_unaligned_read8(addr);
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return *addr;
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}
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SANITIZER_INTERFACE_ATTRIBUTE
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void __sanitizer_unaligned_store16(uu16 *addr, u16 v) {
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__tsan_unaligned_write2(addr);
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*addr = v;
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}
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SANITIZER_INTERFACE_ATTRIBUTE
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void __sanitizer_unaligned_store32(uu32 *addr, u32 v) {
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__tsan_unaligned_write4(addr);
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*addr = v;
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}
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SANITIZER_INTERFACE_ATTRIBUTE
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void __sanitizer_unaligned_store64(uu64 *addr, u64 v) {
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__tsan_unaligned_write8(addr);
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*addr = v;
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}
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SANITIZER_INTERFACE_ATTRIBUTE
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void *__tsan_get_current_fiber() {
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return cur_thread();
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}
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SANITIZER_INTERFACE_ATTRIBUTE
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void *__tsan_create_fiber(unsigned flags) {
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return FiberCreate(cur_thread(), CALLERPC, flags);
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}
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SANITIZER_INTERFACE_ATTRIBUTE
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void __tsan_destroy_fiber(void *fiber) {
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FiberDestroy(cur_thread(), CALLERPC, static_cast<ThreadState *>(fiber));
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}
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SANITIZER_INTERFACE_ATTRIBUTE
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void __tsan_switch_to_fiber(void *fiber, unsigned flags) {
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FiberSwitch(cur_thread(), CALLERPC, static_cast<ThreadState *>(fiber), flags);
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}
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SANITIZER_INTERFACE_ATTRIBUTE
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void __tsan_set_fiber_name(void *fiber, const char *name) {
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ThreadSetName(static_cast<ThreadState *>(fiber), name);
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}
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} // extern "C"
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void __tsan_acquire(void *addr) {
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Acquire(cur_thread(), CALLERPC, (uptr)addr);
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}
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void __tsan_release(void *addr) {
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Release(cur_thread(), CALLERPC, (uptr)addr);
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}
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