1 //===-- tsan_platform.h -----------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file is a part of ThreadSanitizer (TSan), a race detector.
12 // Platform-specific code.
13 //===----------------------------------------------------------------------===//
15 #ifndef TSAN_PLATFORM_H
16 #define TSAN_PLATFORM_H
18 #if !defined(__LP64__) && !defined(_WIN64)
19 # error "Only 64-bit is supported"
22 #include "tsan_defs.h"
23 #include "tsan_trace.h"
27 #if !defined(SANITIZER_GO)
29 #if defined(__x86_64__)
31 C/C++ on linux/x86_64 and freebsd/x86_64
32 0000 0000 1000 - 0100 0000 0000: main binary and/or MAP_32BIT mappings
33 0100 0000 0000 - 0200 0000 0000: -
34 0200 0000 0000 - 1000 0000 0000: shadow
35 1000 0000 0000 - 3000 0000 0000: -
36 3000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects)
37 4000 0000 0000 - 6000 0000 0000: -
38 6000 0000 0000 - 6200 0000 0000: traces
39 6200 0000 0000 - 7d00 0000 0000: -
40 7d00 0000 0000 - 7e00 0000 0000: heap
41 7e00 0000 0000 - 7e80 0000 0000: -
42 7e80 0000 0000 - 8000 0000 0000: modules and main thread stack
44 const uptr kMetaShadowBeg = 0x300000000000ull;
45 const uptr kMetaShadowEnd = 0x400000000000ull;
46 const uptr kTraceMemBeg = 0x600000000000ull;
47 const uptr kTraceMemEnd = 0x620000000000ull;
48 const uptr kShadowBeg = 0x020000000000ull;
49 const uptr kShadowEnd = 0x100000000000ull;
50 const uptr kHeapMemBeg = 0x7d0000000000ull;
51 const uptr kHeapMemEnd = 0x7e0000000000ull;
52 const uptr kLoAppMemBeg = 0x000000001000ull;
53 const uptr kLoAppMemEnd = 0x010000000000ull;
54 const uptr kHiAppMemBeg = 0x7e8000000000ull;
55 const uptr kHiAppMemEnd = 0x800000000000ull;
56 const uptr kAppMemMsk = 0x7c0000000000ull;
57 const uptr kAppMemXor = 0x020000000000ull;
58 const uptr kVdsoBeg = 0xf000000000000000ull;
59 #elif defined(__mips64)
62 0100 0000 00 - 0200 0000 00: main binary
63 0200 0000 00 - 1400 0000 00: -
64 1400 0000 00 - 2400 0000 00: shadow
65 2400 0000 00 - 3000 0000 00: -
66 3000 0000 00 - 4000 0000 00: metainfo (memory blocks and sync objects)
67 4000 0000 00 - 6000 0000 00: -
68 6000 0000 00 - 6200 0000 00: traces
69 6200 0000 00 - fe00 0000 00: -
70 fe00 0000 00 - ff00 0000 00: heap
71 ff00 0000 00 - ff80 0000 00: -
72 ff80 0000 00 - ffff ffff ff: modules and main thread stack
74 const uptr kMetaShadowBeg = 0x3000000000ull;
75 const uptr kMetaShadowEnd = 0x4000000000ull;
76 const uptr kTraceMemBeg = 0x6000000000ull;
77 const uptr kTraceMemEnd = 0x6200000000ull;
78 const uptr kShadowBeg = 0x1400000000ull;
79 const uptr kShadowEnd = 0x2400000000ull;
80 const uptr kHeapMemBeg = 0xfe00000000ull;
81 const uptr kHeapMemEnd = 0xff00000000ull;
82 const uptr kLoAppMemBeg = 0x0100000000ull;
83 const uptr kLoAppMemEnd = 0x0200000000ull;
84 const uptr kHiAppMemBeg = 0xff80000000ull;
85 const uptr kHiAppMemEnd = 0xffffffffffull;
86 const uptr kAppMemMsk = 0xfc00000000ull;
87 const uptr kAppMemXor = 0x0400000000ull;
88 const uptr kVdsoBeg = 0xfffff00000ull;
92 bool IsAppMem(uptr mem) {
93 return (mem >= kHeapMemBeg && mem < kHeapMemEnd) ||
94 (mem >= kLoAppMemBeg && mem < kLoAppMemEnd) ||
95 (mem >= kHiAppMemBeg && mem < kHiAppMemEnd);
99 bool IsShadowMem(uptr mem) {
100 return mem >= kShadowBeg && mem <= kShadowEnd;
104 bool IsMetaMem(uptr mem) {
105 return mem >= kMetaShadowBeg && mem <= kMetaShadowEnd;
109 uptr MemToShadow(uptr x) {
111 return (((x) & ~(kAppMemMsk | (kShadowCell - 1)))
112 ^ kAppMemXor) * kShadowCnt;
116 u32 *MemToMeta(uptr x) {
118 return (u32*)(((((x) & ~(kAppMemMsk | (kMetaShadowCell - 1)))
119 ^ kAppMemXor) / kMetaShadowCell * kMetaShadowSize) | kMetaShadowBeg);
123 uptr ShadowToMem(uptr s) {
124 CHECK(IsShadowMem(s));
125 if (s >= MemToShadow(kLoAppMemBeg) && s <= MemToShadow(kLoAppMemEnd - 1))
126 return (s / kShadowCnt) ^ kAppMemXor;
128 return ((s / kShadowCnt) ^ kAppMemXor) | kAppMemMsk;
131 static USED uptr UserRegions[] = {
132 kLoAppMemBeg, kLoAppMemEnd,
133 kHiAppMemBeg, kHiAppMemEnd,
134 kHeapMemBeg, kHeapMemEnd,
137 #elif defined(SANITIZER_GO) && !SANITIZER_WINDOWS
139 /* Go on linux, darwin and freebsd
140 0000 0000 1000 - 0000 1000 0000: executable
141 0000 1000 0000 - 00c0 0000 0000: -
142 00c0 0000 0000 - 00e0 0000 0000: heap
143 00e0 0000 0000 - 2000 0000 0000: -
144 2000 0000 0000 - 2380 0000 0000: shadow
145 2380 0000 0000 - 3000 0000 0000: -
146 3000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects)
147 4000 0000 0000 - 6000 0000 0000: -
148 6000 0000 0000 - 6200 0000 0000: traces
149 6200 0000 0000 - 8000 0000 0000: -
152 const uptr kMetaShadowBeg = 0x300000000000ull;
153 const uptr kMetaShadowEnd = 0x400000000000ull;
154 const uptr kTraceMemBeg = 0x600000000000ull;
155 const uptr kTraceMemEnd = 0x620000000000ull;
156 const uptr kShadowBeg = 0x200000000000ull;
157 const uptr kShadowEnd = 0x238000000000ull;
158 const uptr kAppMemBeg = 0x000000001000ull;
159 const uptr kAppMemEnd = 0x00e000000000ull;
162 bool IsAppMem(uptr mem) {
163 return mem >= kAppMemBeg && mem < kAppMemEnd;
167 bool IsShadowMem(uptr mem) {
168 return mem >= kShadowBeg && mem <= kShadowEnd;
172 bool IsMetaMem(uptr mem) {
173 return mem >= kMetaShadowBeg && mem <= kMetaShadowEnd;
177 uptr MemToShadow(uptr x) {
179 return ((x & ~(kShadowCell - 1)) * kShadowCnt) | kShadowBeg;
183 u32 *MemToMeta(uptr x) {
185 return (u32*)(((x & ~(kMetaShadowCell - 1)) / \
186 kMetaShadowCell * kMetaShadowSize) | kMetaShadowBeg);
190 uptr ShadowToMem(uptr s) {
191 CHECK(IsShadowMem(s));
192 return (s & ~kShadowBeg) / kShadowCnt;
195 static USED uptr UserRegions[] = {
196 kAppMemBeg, kAppMemEnd,
199 #elif defined(SANITIZER_GO) && SANITIZER_WINDOWS
202 0000 0000 1000 - 0000 1000 0000: executable
203 0000 1000 0000 - 00f8 0000 0000: -
204 00c0 0000 0000 - 00e0 0000 0000: heap
205 00e0 0000 0000 - 0100 0000 0000: -
206 0100 0000 0000 - 0500 0000 0000: shadow
207 0500 0000 0000 - 0560 0000 0000: -
208 0560 0000 0000 - 0760 0000 0000: traces
209 0760 0000 0000 - 07d0 0000 0000: metainfo (memory blocks and sync objects)
210 07d0 0000 0000 - 8000 0000 0000: -
213 const uptr kMetaShadowBeg = 0x076000000000ull;
214 const uptr kMetaShadowEnd = 0x07d000000000ull;
215 const uptr kTraceMemBeg = 0x056000000000ull;
216 const uptr kTraceMemEnd = 0x076000000000ull;
217 const uptr kShadowBeg = 0x010000000000ull;
218 const uptr kShadowEnd = 0x050000000000ull;
219 const uptr kAppMemBeg = 0x000000001000ull;
220 const uptr kAppMemEnd = 0x00e000000000ull;
223 bool IsAppMem(uptr mem) {
224 return mem >= kAppMemBeg && mem < kAppMemEnd;
228 bool IsShadowMem(uptr mem) {
229 return mem >= kShadowBeg && mem <= kShadowEnd;
233 bool IsMetaMem(uptr mem) {
234 return mem >= kMetaShadowBeg && mem <= kMetaShadowEnd;
238 uptr MemToShadow(uptr x) {
240 return ((x & ~(kShadowCell - 1)) * kShadowCnt) + kShadowBeg;
244 u32 *MemToMeta(uptr x) {
246 return (u32*)(((x & ~(kMetaShadowCell - 1)) / \
247 kMetaShadowCell * kMetaShadowSize) | kMetaShadowBeg);
251 uptr ShadowToMem(uptr s) {
252 CHECK(IsShadowMem(s));
253 // FIXME(dvyukov): this is most likely wrong as the mapping is not bijection.
254 return (s - kShadowBeg) / kShadowCnt;
257 static USED uptr UserRegions[] = {
258 kAppMemBeg, kAppMemEnd,
262 # error "Unknown platform"
265 // The additional page is to catch shadow stack overflow as paging fault.
266 // Windows wants 64K alignment for mmaps.
267 const uptr kTotalTraceSize = (kTraceSize * sizeof(Event) + sizeof(Trace)
268 + (64 << 10) + (64 << 10) - 1) & ~((64 << 10) - 1);
270 uptr ALWAYS_INLINE GetThreadTrace(int tid) {
271 uptr p = kTraceMemBeg + (uptr)tid * kTotalTraceSize;
272 DCHECK_LT(p, kTraceMemEnd);
276 uptr ALWAYS_INLINE GetThreadTraceHeader(int tid) {
277 uptr p = kTraceMemBeg + (uptr)tid * kTotalTraceSize
278 + kTraceSize * sizeof(Event);
279 DCHECK_LT(p, kTraceMemEnd);
283 void InitializePlatform();
284 void FlushShadowMemory();
285 void WriteMemoryProfile(char *buf, uptr buf_size, uptr nthread, uptr nlive);
287 // Says whether the addr relates to a global var.
288 // Guesses with high probability, may yield both false positives and negatives.
289 bool IsGlobalVar(uptr addr);
290 int ExtractResolvFDs(void *state, int *fds, int nfd);
291 int ExtractRecvmsgFDs(void *msg, int *fds, int nfd);
293 int call_pthread_cancel_with_cleanup(int(*fn)(void *c, void *m,
294 void *abstime), void *c, void *m, void *abstime,
295 void(*cleanup)(void *arg), void *arg);
297 } // namespace __tsan
299 #endif // TSAN_PLATFORM_H