tsan_interface.cc revision 3c80c6c574850106481f82b9e23d1c728458d4a9
1//===-- tsan_interface.cc -------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file is a part of ThreadSanitizer (TSan), a race detector. 11// 12//===----------------------------------------------------------------------===// 13 14#include "tsan_interface.h" 15#include "tsan_interface_ann.h" 16#include "tsan_rtl.h" 17#include "sanitizer_common/sanitizer_internal_defs.h" 18 19#define CALLERPC ((uptr)__builtin_return_address(0)) 20 21using namespace __tsan; // NOLINT 22 23typedef u16 uint16_t; 24typedef u32 uint32_t; 25typedef u64 uint64_t; 26 27void __tsan_init() { 28 Initialize(cur_thread()); 29} 30 31void __tsan_read16(void *addr) { 32 MemoryRead(cur_thread(), CALLERPC, (uptr)addr, kSizeLog8); 33 MemoryRead(cur_thread(), CALLERPC, (uptr)addr + 8, kSizeLog8); 34} 35 36void __tsan_write16(void *addr) { 37 MemoryWrite(cur_thread(), CALLERPC, (uptr)addr, kSizeLog8); 38 MemoryWrite(cur_thread(), CALLERPC, (uptr)addr + 8, kSizeLog8); 39} 40 41u16 __tsan_unaligned_read2(const uu16 *addr) { 42 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, false, false); 43 return *addr; 44} 45 46u32 __tsan_unaligned_read4(const uu32 *addr) { 47 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, false, false); 48 return *addr; 49} 50 51u64 __tsan_unaligned_read8(const uu64 *addr) { 52 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, false, false); 53 return *addr; 54} 55 56void __tsan_unaligned_write2(uu16 *addr, u16 v) { 57 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, true, false); 58 *addr = v; 59} 60 61void __tsan_unaligned_write4(uu32 *addr, u32 v) { 62 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, true, false); 63 *addr = v; 64} 65 66void __tsan_unaligned_write8(uu64 *addr, u64 v) { 67 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, true, false); 68 *addr = v; 69} 70 71extern "C" { 72SANITIZER_INTERFACE_ATTRIBUTE 73uint16_t __sanitizer_unaligned_load16(void *addr) 74 ALIAS("__tsan_unaligned_read2"); 75SANITIZER_INTERFACE_ATTRIBUTE 76uint32_t __sanitizer_unaligned_load32(void *addr) 77 ALIAS("__tsan_unaligned_read4"); 78SANITIZER_INTERFACE_ATTRIBUTE 79uint64_t __sanitizer_unaligned_load64(void *addr) 80 ALIAS("__tsan_unaligned_read8"); 81SANITIZER_INTERFACE_ATTRIBUTE 82void __sanitizer_unaligned_store16(void *addr, uint16_t v) 83 ALIAS("__tsan_unaligned_write2"); 84SANITIZER_INTERFACE_ATTRIBUTE 85void __sanitizer_unaligned_store32(void *addr, uint32_t v) 86 ALIAS("__tsan_unaligned_write4"); 87SANITIZER_INTERFACE_ATTRIBUTE 88void __sanitizer_unaligned_store64(void *addr, uint64_t v) 89 ALIAS("__tsan_unaligned_write8"); 90} 91 92void __tsan_acquire(void *addr) { 93 Acquire(cur_thread(), CALLERPC, (uptr)addr); 94} 95 96void __tsan_release(void *addr) { 97 Release(cur_thread(), CALLERPC, (uptr)addr); 98} 99