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 41void __tsan_read16_pc(void *addr, void *pc) { 42 MemoryRead(cur_thread(), (uptr)pc, (uptr)addr, kSizeLog8); 43 MemoryRead(cur_thread(), (uptr)pc, (uptr)addr + 8, kSizeLog8); 44} 45 46void __tsan_write16_pc(void *addr, void *pc) { 47 MemoryWrite(cur_thread(), (uptr)pc, (uptr)addr, kSizeLog8); 48 MemoryWrite(cur_thread(), (uptr)pc, (uptr)addr + 8, kSizeLog8); 49} 50 51// __tsan_unaligned_read/write calls are emitted by compiler. 52 53void __tsan_unaligned_read2(const void *addr) { 54 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, false, false); 55} 56 57void __tsan_unaligned_read4(const void *addr) { 58 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, false, false); 59} 60 61void __tsan_unaligned_read8(const void *addr) { 62 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, false, false); 63} 64 65void __tsan_unaligned_read16(const void *addr) { 66 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 16, false, false); 67} 68 69void __tsan_unaligned_write2(void *addr) { 70 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, true, false); 71} 72 73void __tsan_unaligned_write4(void *addr) { 74 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, true, false); 75} 76 77void __tsan_unaligned_write8(void *addr) { 78 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, true, false); 79} 80 81void __tsan_unaligned_write16(void *addr) { 82 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 16, true, false); 83} 84 85// __sanitizer_unaligned_load/store are for user instrumentation. 86 87extern "C" { 88SANITIZER_INTERFACE_ATTRIBUTE 89u16 __sanitizer_unaligned_load16(const uu16 *addr) { 90 __tsan_unaligned_read2(addr); 91 return *addr; 92} 93 94SANITIZER_INTERFACE_ATTRIBUTE 95u32 __sanitizer_unaligned_load32(const uu32 *addr) { 96 __tsan_unaligned_read4(addr); 97 return *addr; 98} 99 100SANITIZER_INTERFACE_ATTRIBUTE 101u64 __sanitizer_unaligned_load64(const uu64 *addr) { 102 __tsan_unaligned_read8(addr); 103 return *addr; 104} 105 106SANITIZER_INTERFACE_ATTRIBUTE 107void __sanitizer_unaligned_store16(uu16 *addr, u16 v) { 108 __tsan_unaligned_write2(addr); 109 *addr = v; 110} 111 112SANITIZER_INTERFACE_ATTRIBUTE 113void __sanitizer_unaligned_store32(uu32 *addr, u32 v) { 114 __tsan_unaligned_write4(addr); 115 *addr = v; 116} 117 118SANITIZER_INTERFACE_ATTRIBUTE 119void __sanitizer_unaligned_store64(uu64 *addr, u64 v) { 120 __tsan_unaligned_write8(addr); 121 *addr = v; 122} 123} // extern "C" 124 125void __tsan_acquire(void *addr) { 126 Acquire(cur_thread(), CALLERPC, (uptr)addr); 127} 128 129void __tsan_release(void *addr) { 130 Release(cur_thread(), CALLERPC, (uptr)addr); 131} 132