1//===-- tsan_interface.inc --------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file is a part of ThreadSanitizer (TSan), a race detector.
10//
11//===----------------------------------------------------------------------===//
12
13#include "sanitizer_common/sanitizer_ptrauth.h"
14#include "tsan_interface.h"
15#include "tsan_rtl.h"
16
17#define CALLERPC ((uptr)__builtin_return_address(0))
18
19using namespace __tsan;
20
21void __tsan_read1(void *addr) {
22 MemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 1, typ: kAccessRead);
23}
24
25void __tsan_read2(void *addr) {
26 MemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 2, typ: kAccessRead);
27}
28
29void __tsan_read4(void *addr) {
30 MemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 4, typ: kAccessRead);
31}
32
33void __tsan_read8(void *addr) {
34 MemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 8, typ: kAccessRead);
35}
36
37void __tsan_read16(void *addr) {
38 MemoryAccess16(thr: cur_thread(), CALLERPC, addr: (uptr)addr, typ: kAccessRead);
39}
40
41void __tsan_write1(void *addr) {
42 MemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 1, typ: kAccessWrite);
43}
44
45void __tsan_write2(void *addr) {
46 MemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 2, typ: kAccessWrite);
47}
48
49void __tsan_write4(void *addr) {
50 MemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 4, typ: kAccessWrite);
51}
52
53void __tsan_write8(void *addr) {
54 MemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 8, typ: kAccessWrite);
55}
56
57void __tsan_write16(void *addr) {
58 MemoryAccess16(thr: cur_thread(), CALLERPC, addr: (uptr)addr, typ: kAccessWrite);
59}
60
61void __tsan_read1_pc(void *addr, void *pc) {
62 MemoryAccess(thr: cur_thread(), STRIP_PAC_PC(pc), addr: (uptr)addr, size: 1, typ: kAccessRead | kAccessExternalPC);
63}
64
65void __tsan_read2_pc(void *addr, void *pc) {
66 MemoryAccess(thr: cur_thread(), STRIP_PAC_PC(pc), addr: (uptr)addr, size: 2, typ: kAccessRead | kAccessExternalPC);
67}
68
69void __tsan_read4_pc(void *addr, void *pc) {
70 MemoryAccess(thr: cur_thread(), STRIP_PAC_PC(pc), addr: (uptr)addr, size: 4, typ: kAccessRead | kAccessExternalPC);
71}
72
73void __tsan_read8_pc(void *addr, void *pc) {
74 MemoryAccess(thr: cur_thread(), STRIP_PAC_PC(pc), addr: (uptr)addr, size: 8, typ: kAccessRead | kAccessExternalPC);
75}
76
77void __tsan_write1_pc(void *addr, void *pc) {
78 MemoryAccess(thr: cur_thread(), STRIP_PAC_PC(pc), addr: (uptr)addr, size: 1, typ: kAccessWrite | kAccessExternalPC);
79}
80
81void __tsan_write2_pc(void *addr, void *pc) {
82 MemoryAccess(thr: cur_thread(), STRIP_PAC_PC(pc), addr: (uptr)addr, size: 2, typ: kAccessWrite | kAccessExternalPC);
83}
84
85void __tsan_write4_pc(void *addr, void *pc) {
86 MemoryAccess(thr: cur_thread(), STRIP_PAC_PC(pc), addr: (uptr)addr, size: 4, typ: kAccessWrite | kAccessExternalPC);
87}
88
89void __tsan_write8_pc(void *addr, void *pc) {
90 MemoryAccess(thr: cur_thread(), STRIP_PAC_PC(pc), addr: (uptr)addr, size: 8, typ: kAccessWrite | kAccessExternalPC);
91}
92
93ALWAYS_INLINE USED void __tsan_unaligned_read2(const void *addr) {
94 UnalignedMemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 2, typ: kAccessRead);
95}
96
97ALWAYS_INLINE USED void __tsan_unaligned_read4(const void *addr) {
98 UnalignedMemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 4, typ: kAccessRead);
99}
100
101ALWAYS_INLINE USED void __tsan_unaligned_read8(const void *addr) {
102 UnalignedMemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 8, typ: kAccessRead);
103}
104
105ALWAYS_INLINE USED void __tsan_unaligned_write2(void *addr) {
106 UnalignedMemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 2, typ: kAccessWrite);
107}
108
109ALWAYS_INLINE USED void __tsan_unaligned_write4(void *addr) {
110 UnalignedMemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 4, typ: kAccessWrite);
111}
112
113ALWAYS_INLINE USED void __tsan_unaligned_write8(void *addr) {
114 UnalignedMemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size: 8, typ: kAccessWrite);
115}
116
117extern "C" {
118// __sanitizer_unaligned_load/store are for user instrumentation.
119SANITIZER_INTERFACE_ATTRIBUTE
120u16 __sanitizer_unaligned_load16(const uu16 *addr) {
121 __tsan_unaligned_read2(addr);
122 return *addr;
123}
124
125SANITIZER_INTERFACE_ATTRIBUTE
126u32 __sanitizer_unaligned_load32(const uu32 *addr) {
127 __tsan_unaligned_read4(addr);
128 return *addr;
129}
130
131SANITIZER_INTERFACE_ATTRIBUTE
132u64 __sanitizer_unaligned_load64(const uu64 *addr) {
133 __tsan_unaligned_read8(addr);
134 return *addr;
135}
136
137SANITIZER_INTERFACE_ATTRIBUTE
138void __sanitizer_unaligned_store16(uu16 *addr, u16 v) {
139 *addr = v;
140 __tsan_unaligned_write2(addr);
141}
142
143SANITIZER_INTERFACE_ATTRIBUTE
144void __sanitizer_unaligned_store32(uu32 *addr, u32 v) {
145 *addr = v;
146 __tsan_unaligned_write4(addr);
147}
148
149SANITIZER_INTERFACE_ATTRIBUTE
150void __sanitizer_unaligned_store64(uu64 *addr, u64 v) {
151 *addr = v;
152 __tsan_unaligned_write8(addr);
153}
154}
155
156void __tsan_vptr_update(void **vptr_p, void *new_val) {
157 if (*vptr_p == new_val)
158 return;
159 MemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)vptr_p, size: sizeof(*vptr_p),
160 typ: kAccessWrite | kAccessVptr);
161}
162
163void __tsan_vptr_read(void **vptr_p) {
164 MemoryAccess(thr: cur_thread(), CALLERPC, addr: (uptr)vptr_p, size: sizeof(*vptr_p),
165 typ: kAccessRead | kAccessVptr);
166}
167
168void __tsan_func_entry(void *pc) { FuncEntry(thr: cur_thread(), STRIP_PAC_PC(pc)); }
169
170void __tsan_func_exit() { FuncExit(thr: cur_thread()); }
171
172void __tsan_ignore_thread_begin() { ThreadIgnoreBegin(thr: cur_thread(), CALLERPC); }
173
174void __tsan_ignore_thread_end() { ThreadIgnoreEnd(thr: cur_thread()); }
175
176void __tsan_read_range(void *addr, uptr size) {
177 MemoryAccessRange(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size, is_write: false);
178}
179
180void __tsan_write_range(void *addr, uptr size) {
181 MemoryAccessRange(thr: cur_thread(), CALLERPC, addr: (uptr)addr, size, is_write: true);
182}
183
184void __tsan_read_range_pc(void *addr, uptr size, void *pc) {
185 MemoryAccessRange(thr: cur_thread(), STRIP_PAC_PC(pc), addr: (uptr)addr, size, is_write: false);
186}
187
188void __tsan_write_range_pc(void *addr, uptr size, void *pc) {
189 MemoryAccessRange(thr: cur_thread(), STRIP_PAC_PC(pc), addr: (uptr)addr, size, is_write: true);
190}
191