1 //===-- tsan_interface.cc -------------------------------------------------===// 2 // 3 // This file is distributed under the University of Illinois Open Source 4 // License. See LICENSE.TXT for details. 5 // 6 //===----------------------------------------------------------------------===// 7 // 8 // This file is a part of ThreadSanitizer (TSan), a race detector. 9 // 10 //===----------------------------------------------------------------------===// 11 12 #include "tsan_interface.h" 13 #include "tsan_interface_ann.h" 14 #include "tsan_rtl.h" 15 #include "sanitizer_common/sanitizer_internal_defs.h" 16 17 #define CALLERPC ((uptr)__builtin_return_address(0)) 18 19 using namespace __tsan; // NOLINT 20 21 #if !SANITIZER_NETBSD 22 typedef u16 uint16_t; 23 typedef u32 uint32_t; 24 typedef u64 uint64_t; 25 #endif 26 27 void __tsan_init() { 28 Initialize(cur_thread()); 29 } 30 31 void __tsan_read16(void *addr) { 32 MemoryRead(cur_thread(), CALLERPC, (uptr)addr, kSizeLog8); 33 MemoryRead(cur_thread(), CALLERPC, (uptr)addr + 8, kSizeLog8); 34 } 35 36 void __tsan_write16(void *addr) { 37 MemoryWrite(cur_thread(), CALLERPC, (uptr)addr, kSizeLog8); 38 MemoryWrite(cur_thread(), CALLERPC, (uptr)addr + 8, kSizeLog8); 39 } 40 41 void __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 46 void __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 53 void __tsan_unaligned_read2(const void *addr) { 54 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, false, false); 55 } 56 57 void __tsan_unaligned_read4(const void *addr) { 58 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, false, false); 59 } 60 61 void __tsan_unaligned_read8(const void *addr) { 62 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, false, false); 63 } 64 65 void __tsan_unaligned_read16(const void *addr) { 66 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 16, false, false); 67 } 68 69 void __tsan_unaligned_write2(void *addr) { 70 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, true, false); 71 } 72 73 void __tsan_unaligned_write4(void *addr) { 74 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, true, false); 75 } 76 77 void __tsan_unaligned_write8(void *addr) { 78 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, true, false); 79 } 80 81 void __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 87 extern "C" { 88 SANITIZER_INTERFACE_ATTRIBUTE 89 u16 __sanitizer_unaligned_load16(const uu16 *addr) { 90 __tsan_unaligned_read2(addr); 91 return *addr; 92 } 93 94 SANITIZER_INTERFACE_ATTRIBUTE 95 u32 __sanitizer_unaligned_load32(const uu32 *addr) { 96 __tsan_unaligned_read4(addr); 97 return *addr; 98 } 99 100 SANITIZER_INTERFACE_ATTRIBUTE 101 u64 __sanitizer_unaligned_load64(const uu64 *addr) { 102 __tsan_unaligned_read8(addr); 103 return *addr; 104 } 105 106 SANITIZER_INTERFACE_ATTRIBUTE 107 void __sanitizer_unaligned_store16(uu16 *addr, u16 v) { 108 __tsan_unaligned_write2(addr); 109 *addr = v; 110 } 111 112 SANITIZER_INTERFACE_ATTRIBUTE 113 void __sanitizer_unaligned_store32(uu32 *addr, u32 v) { 114 __tsan_unaligned_write4(addr); 115 *addr = v; 116 } 117 118 SANITIZER_INTERFACE_ATTRIBUTE 119 void __sanitizer_unaligned_store64(uu64 *addr, u64 v) { 120 __tsan_unaligned_write8(addr); 121 *addr = v; 122 } 123 } // extern "C" 124 125 void __tsan_acquire(void *addr) { 126 Acquire(cur_thread(), CALLERPC, (uptr)addr); 127 } 128 129 void __tsan_release(void *addr) { 130 Release(cur_thread(), CALLERPC, (uptr)addr); 131 } 132