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 21 using namespace __tsan; // NOLINT 22 23 typedef u16 uint16_t; 24 typedef u32 uint32_t; 25 typedef u64 uint64_t; 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 u16 __tsan_unaligned_read2(const uu16 *addr) { 42 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, false, false); 43 return *addr; 44 } 45 46 u32 __tsan_unaligned_read4(const uu32 *addr) { 47 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, false, false); 48 return *addr; 49 } 50 51 u64 __tsan_unaligned_read8(const uu64 *addr) { 52 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, false, false); 53 return *addr; 54 } 55 56 void __tsan_unaligned_write2(uu16 *addr, u16 v) { 57 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, true, false); 58 *addr = v; 59 } 60 61 void __tsan_unaligned_write4(uu32 *addr, u32 v) { 62 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, true, false); 63 *addr = v; 64 } 65 66 void __tsan_unaligned_write8(uu64 *addr, u64 v) { 67 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, true, false); 68 *addr = v; 69 } 70 71 extern "C" { 72 uint16_t __sanitizer_unaligned_load16(void *addr) 73 ALIAS("__tsan_unaligned_read2") SANITIZER_INTERFACE_ATTRIBUTE; 74 uint32_t __sanitizer_unaligned_load32(void *addr) 75 ALIAS("__tsan_unaligned_read4") SANITIZER_INTERFACE_ATTRIBUTE; 76 uint64_t __sanitizer_unaligned_load64(void *addr) 77 ALIAS("__tsan_unaligned_read8") SANITIZER_INTERFACE_ATTRIBUTE; 78 void __sanitizer_unaligned_store16(void *addr, uint16_t v) 79 ALIAS("__tsan_unaligned_write2") SANITIZER_INTERFACE_ATTRIBUTE; 80 void __sanitizer_unaligned_store32(void *addr, uint32_t v) 81 ALIAS("__tsan_unaligned_write4") SANITIZER_INTERFACE_ATTRIBUTE; 82 void __sanitizer_unaligned_store64(void *addr, uint64_t v) 83 ALIAS("__tsan_unaligned_write8") SANITIZER_INTERFACE_ATTRIBUTE; 84 } 85 86 void __tsan_acquire(void *addr) { 87 Acquire(cur_thread(), CALLERPC, (uptr)addr); 88 } 89 90 void __tsan_release(void *addr) { 91 Release(cur_thread(), CALLERPC, (uptr)addr); 92 } 93
