forked from OSchip/llvm-project
136 lines
3.6 KiB
C++
136 lines
3.6 KiB
C++
//===-- tsan_interface.cc -------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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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#define CALLERPC ((uptr)__builtin_return_address(0))
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using namespace __tsan; // NOLINT
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typedef u16 uint16_t;
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typedef u32 uint32_t;
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typedef u64 uint64_t;
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void __tsan_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(), (uptr)pc, (uptr)addr, kSizeLog8);
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MemoryRead(cur_thread(), (uptr)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(), (uptr)pc, (uptr)addr, kSizeLog8);
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MemoryWrite(cur_thread(), (uptr)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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} // 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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