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"
29 #if defined(__x86_64__)
31 C/C++ on linux/x86_64 and freebsd/x86_64
32 0000 0000 1000 - 0080 0000 0000: main binary and/or MAP_32BIT mappings (512GB)
33 0040 0000 0000 - 0100 0000 0000: -
34 0100 0000 0000 - 2000 0000 0000: shadow
35 2000 0000 0000 - 3000 0000 0000: -
36 3000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects)
37 4000 0000 0000 - 5500 0000 0000: -
38 5500 0000 0000 - 5680 0000 0000: pie binaries without ASLR or on 4.1+ kernels
39 5680 0000 0000 - 6000 0000 0000: -
40 6000 0000 0000 - 6200 0000 0000: traces
41 6200 0000 0000 - 7d00 0000 0000: -
42 7b00 0000 0000 - 7c00 0000 0000: heap
43 7c00 0000 0000 - 7e80 0000 0000: -
44 7e80 0000 0000 - 8000 0000 0000: modules and main thread stack
47 static const uptr kMetaShadowBeg = 0x300000000000ull;
48 static const uptr kMetaShadowEnd = 0x340000000000ull;
49 static const uptr kTraceMemBeg = 0x600000000000ull;
50 static const uptr kTraceMemEnd = 0x620000000000ull;
51 static const uptr kShadowBeg = 0x010000000000ull;
52 static const uptr kShadowEnd = 0x200000000000ull;
53 static const uptr kHeapMemBeg = 0x7b0000000000ull;
54 static const uptr kHeapMemEnd = 0x7c0000000000ull;
55 static const uptr kLoAppMemBeg = 0x000000001000ull;
56 static const uptr kLoAppMemEnd = 0x008000000000ull;
57 static const uptr kMidAppMemBeg = 0x550000000000ull;
58 static const uptr kMidAppMemEnd = 0x568000000000ull;
59 static const uptr kHiAppMemBeg = 0x7e8000000000ull;
60 static const uptr kHiAppMemEnd = 0x800000000000ull;
61 static const uptr kAppMemMsk = 0x780000000000ull;
62 static const uptr kAppMemXor = 0x040000000000ull;
63 static const uptr kVdsoBeg = 0xf000000000000000ull;
66 #define TSAN_MID_APP_RANGE 1
67 #elif defined(__mips64)
70 0100 0000 00 - 0200 0000 00: main binary
71 0200 0000 00 - 1400 0000 00: -
72 1400 0000 00 - 2400 0000 00: shadow
73 2400 0000 00 - 3000 0000 00: -
74 3000 0000 00 - 4000 0000 00: metainfo (memory blocks and sync objects)
75 4000 0000 00 - 6000 0000 00: -
76 6000 0000 00 - 6200 0000 00: traces
77 6200 0000 00 - fe00 0000 00: -
78 fe00 0000 00 - ff00 0000 00: heap
79 ff00 0000 00 - ff80 0000 00: -
80 ff80 0000 00 - ffff ffff ff: modules and main thread stack
83 static const uptr kMetaShadowBeg = 0x4000000000ull;
84 static const uptr kMetaShadowEnd = 0x5000000000ull;
85 static const uptr kTraceMemBeg = 0xb000000000ull;
86 static const uptr kTraceMemEnd = 0xb200000000ull;
87 static const uptr kShadowBeg = 0x2400000000ull;
88 static const uptr kShadowEnd = 0x4000000000ull;
89 static const uptr kHeapMemBeg = 0xfe00000000ull;
90 static const uptr kHeapMemEnd = 0xff00000000ull;
91 static const uptr kLoAppMemBeg = 0x0100000000ull;
92 static const uptr kLoAppMemEnd = 0x0200000000ull;
93 static const uptr kMidAppMemBeg = 0xaa00000000ull;
94 static const uptr kMidAppMemEnd = 0xab00000000ull;
95 static const uptr kHiAppMemBeg = 0xff80000000ull;
96 static const uptr kHiAppMemEnd = 0xffffffffffull;
97 static const uptr kAppMemMsk = 0xf800000000ull;
98 static const uptr kAppMemXor = 0x0800000000ull;
99 static const uptr kVdsoBeg = 0xfffff00000ull;
102 #define TSAN_MID_APP_RANGE 1
103 #elif defined(__aarch64__) && defined(__APPLE__)
105 C/C++ on Darwin/iOS/ARM64 (36-bit VMA, 64 GB VM)
106 0000 0000 00 - 0100 0000 00: - (4 GB)
107 0100 0000 00 - 0200 0000 00: main binary, modules, thread stacks (4 GB)
108 0200 0000 00 - 0300 0000 00: heap (4 GB)
109 0300 0000 00 - 0400 0000 00: - (4 GB)
110 0400 0000 00 - 0c00 0000 00: shadow memory (32 GB)
111 0c00 0000 00 - 0d00 0000 00: - (4 GB)
112 0d00 0000 00 - 0e00 0000 00: metainfo (4 GB)
113 0e00 0000 00 - 0f00 0000 00: - (4 GB)
114 0f00 0000 00 - 1000 0000 00: traces (4 GB)
117 static const uptr kLoAppMemBeg = 0x0100000000ull;
118 static const uptr kLoAppMemEnd = 0x0200000000ull;
119 static const uptr kHeapMemBeg = 0x0200000000ull;
120 static const uptr kHeapMemEnd = 0x0300000000ull;
121 static const uptr kShadowBeg = 0x0400000000ull;
122 static const uptr kShadowEnd = 0x0c00000000ull;
123 static const uptr kMetaShadowBeg = 0x0d00000000ull;
124 static const uptr kMetaShadowEnd = 0x0e00000000ull;
125 static const uptr kTraceMemBeg = 0x0f00000000ull;
126 static const uptr kTraceMemEnd = 0x1000000000ull;
127 static const uptr kHiAppMemBeg = 0x1000000000ull;
128 static const uptr kHiAppMemEnd = 0x1000000000ull;
129 static const uptr kAppMemMsk = 0x0ull;
130 static const uptr kAppMemXor = 0x0ull;
131 static const uptr kVdsoBeg = 0x7000000000000000ull;
134 #elif defined(__aarch64__)
135 // AArch64 supports multiple VMA which leads to multiple address transformation
136 // functions. To support these multiple VMAS transformations and mappings TSAN
137 // runtime for AArch64 uses an external memory read (vmaSize) to select which
138 // mapping to use. Although slower, it make a same instrumented binary run on
142 C/C++ on linux/aarch64 (39-bit VMA)
143 0000 0010 00 - 0100 0000 00: main binary
144 0100 0000 00 - 0800 0000 00: -
145 0800 0000 00 - 2000 0000 00: shadow memory
146 2000 0000 00 - 3100 0000 00: -
147 3100 0000 00 - 3400 0000 00: metainfo
148 3400 0000 00 - 5500 0000 00: -
149 5500 0000 00 - 5600 0000 00: main binary (PIE)
150 5600 0000 00 - 6000 0000 00: -
151 6000 0000 00 - 6200 0000 00: traces
152 6200 0000 00 - 7d00 0000 00: -
153 7c00 0000 00 - 7d00 0000 00: heap
154 7d00 0000 00 - 7fff ffff ff: modules and main thread stack
157 static const uptr kLoAppMemBeg = 0x0000001000ull;
158 static const uptr kLoAppMemEnd = 0x0100000000ull;
159 static const uptr kShadowBeg = 0x0800000000ull;
160 static const uptr kShadowEnd = 0x2000000000ull;
161 static const uptr kMetaShadowBeg = 0x3100000000ull;
162 static const uptr kMetaShadowEnd = 0x3400000000ull;
163 static const uptr kMidAppMemBeg = 0x5500000000ull;
164 static const uptr kMidAppMemEnd = 0x5600000000ull;
165 static const uptr kTraceMemBeg = 0x6000000000ull;
166 static const uptr kTraceMemEnd = 0x6200000000ull;
167 static const uptr kHeapMemBeg = 0x7c00000000ull;
168 static const uptr kHeapMemEnd = 0x7d00000000ull;
169 static const uptr kHiAppMemBeg = 0x7e00000000ull;
170 static const uptr kHiAppMemEnd = 0x7fffffffffull;
171 static const uptr kAppMemMsk = 0x7800000000ull;
172 static const uptr kAppMemXor = 0x0200000000ull;
173 static const uptr kVdsoBeg = 0x7f00000000ull;
177 C/C++ on linux/aarch64 (42-bit VMA)
178 00000 0010 00 - 01000 0000 00: main binary
179 01000 0000 00 - 10000 0000 00: -
180 10000 0000 00 - 20000 0000 00: shadow memory
181 20000 0000 00 - 26000 0000 00: -
182 26000 0000 00 - 28000 0000 00: metainfo
183 28000 0000 00 - 2aa00 0000 00: -
184 2aa00 0000 00 - 2ab00 0000 00: main binary (PIE)
185 2ab00 0000 00 - 36200 0000 00: -
186 36200 0000 00 - 36240 0000 00: traces
187 36240 0000 00 - 3e000 0000 00: -
188 3e000 0000 00 - 3f000 0000 00: heap
189 3f000 0000 00 - 3ffff ffff ff: modules and main thread stack
192 static const uptr kLoAppMemBeg = 0x00000001000ull;
193 static const uptr kLoAppMemEnd = 0x01000000000ull;
194 static const uptr kShadowBeg = 0x10000000000ull;
195 static const uptr kShadowEnd = 0x20000000000ull;
196 static const uptr kMetaShadowBeg = 0x26000000000ull;
197 static const uptr kMetaShadowEnd = 0x28000000000ull;
198 static const uptr kMidAppMemBeg = 0x2aa00000000ull;
199 static const uptr kMidAppMemEnd = 0x2ab00000000ull;
200 static const uptr kTraceMemBeg = 0x36200000000ull;
201 static const uptr kTraceMemEnd = 0x36400000000ull;
202 static const uptr kHeapMemBeg = 0x3e000000000ull;
203 static const uptr kHeapMemEnd = 0x3f000000000ull;
204 static const uptr kHiAppMemBeg = 0x3f000000000ull;
205 static const uptr kHiAppMemEnd = 0x3ffffffffffull;
206 static const uptr kAppMemMsk = 0x3c000000000ull;
207 static const uptr kAppMemXor = 0x04000000000ull;
208 static const uptr kVdsoBeg = 0x37f00000000ull;
212 static const uptr kLoAppMemBeg = 0x0000000001000ull;
213 static const uptr kLoAppMemEnd = 0x0000200000000ull;
214 static const uptr kShadowBeg = 0x0002000000000ull;
215 static const uptr kShadowEnd = 0x0004000000000ull;
216 static const uptr kMetaShadowBeg = 0x0005000000000ull;
217 static const uptr kMetaShadowEnd = 0x0006000000000ull;
218 static const uptr kMidAppMemBeg = 0x0aaaa00000000ull;
219 static const uptr kMidAppMemEnd = 0x0aaaf00000000ull;
220 static const uptr kTraceMemBeg = 0x0f06000000000ull;
221 static const uptr kTraceMemEnd = 0x0f06200000000ull;
222 static const uptr kHeapMemBeg = 0x0ffff00000000ull;
223 static const uptr kHeapMemEnd = 0x0ffff00000000ull;
224 static const uptr kHiAppMemBeg = 0x0ffff00000000ull;
225 static const uptr kHiAppMemEnd = 0x1000000000000ull;
226 static const uptr kAppMemMsk = 0x0fff800000000ull;
227 static const uptr kAppMemXor = 0x0000800000000ull;
228 static const uptr kVdsoBeg = 0xffff000000000ull;
231 // Indicates the runtime will define the memory regions at runtime.
232 #define TSAN_RUNTIME_VMA 1
233 // Indicates that mapping defines a mid range memory segment.
234 #define TSAN_MID_APP_RANGE 1
235 #elif defined(__powerpc64__)
236 // PPC64 supports multiple VMA which leads to multiple address transformation
237 // functions. To support these multiple VMAS transformations and mappings TSAN
238 // runtime for PPC64 uses an external memory read (vmaSize) to select which
239 // mapping to use. Although slower, it make a same instrumented binary run on
243 C/C++ on linux/powerpc64 (44-bit VMA)
244 0000 0000 0100 - 0001 0000 0000: main binary
245 0001 0000 0000 - 0001 0000 0000: -
246 0001 0000 0000 - 0b00 0000 0000: shadow
247 0b00 0000 0000 - 0b00 0000 0000: -
248 0b00 0000 0000 - 0d00 0000 0000: metainfo (memory blocks and sync objects)
249 0d00 0000 0000 - 0d00 0000 0000: -
250 0d00 0000 0000 - 0f00 0000 0000: traces
251 0f00 0000 0000 - 0f00 0000 0000: -
252 0f00 0000 0000 - 0f50 0000 0000: heap
253 0f50 0000 0000 - 0f60 0000 0000: -
254 0f60 0000 0000 - 1000 0000 0000: modules and main thread stack
257 static const uptr kMetaShadowBeg = 0x0b0000000000ull;
258 static const uptr kMetaShadowEnd = 0x0d0000000000ull;
259 static const uptr kTraceMemBeg = 0x0d0000000000ull;
260 static const uptr kTraceMemEnd = 0x0f0000000000ull;
261 static const uptr kShadowBeg = 0x000100000000ull;
262 static const uptr kShadowEnd = 0x0b0000000000ull;
263 static const uptr kLoAppMemBeg = 0x000000000100ull;
264 static const uptr kLoAppMemEnd = 0x000100000000ull;
265 static const uptr kHeapMemBeg = 0x0f0000000000ull;
266 static const uptr kHeapMemEnd = 0x0f5000000000ull;
267 static const uptr kHiAppMemBeg = 0x0f6000000000ull;
268 static const uptr kHiAppMemEnd = 0x100000000000ull; // 44 bits
269 static const uptr kAppMemMsk = 0x0f0000000000ull;
270 static const uptr kAppMemXor = 0x002100000000ull;
271 static const uptr kVdsoBeg = 0x3c0000000000000ull;
275 C/C++ on linux/powerpc64 (46-bit VMA)
276 0000 0000 1000 - 0100 0000 0000: main binary
277 0100 0000 0000 - 0200 0000 0000: -
278 0100 0000 0000 - 1000 0000 0000: shadow
279 1000 0000 0000 - 1000 0000 0000: -
280 1000 0000 0000 - 2000 0000 0000: metainfo (memory blocks and sync objects)
281 2000 0000 0000 - 2000 0000 0000: -
282 2000 0000 0000 - 2200 0000 0000: traces
283 2200 0000 0000 - 3d00 0000 0000: -
284 3d00 0000 0000 - 3e00 0000 0000: heap
285 3e00 0000 0000 - 3e80 0000 0000: -
286 3e80 0000 0000 - 4000 0000 0000: modules and main thread stack
289 static const uptr kMetaShadowBeg = 0x100000000000ull;
290 static const uptr kMetaShadowEnd = 0x200000000000ull;
291 static const uptr kTraceMemBeg = 0x200000000000ull;
292 static const uptr kTraceMemEnd = 0x220000000000ull;
293 static const uptr kShadowBeg = 0x010000000000ull;
294 static const uptr kShadowEnd = 0x100000000000ull;
295 static const uptr kHeapMemBeg = 0x3d0000000000ull;
296 static const uptr kHeapMemEnd = 0x3e0000000000ull;
297 static const uptr kLoAppMemBeg = 0x000000001000ull;
298 static const uptr kLoAppMemEnd = 0x010000000000ull;
299 static const uptr kHiAppMemBeg = 0x3e8000000000ull;
300 static const uptr kHiAppMemEnd = 0x400000000000ull; // 46 bits
301 static const uptr kAppMemMsk = 0x3c0000000000ull;
302 static const uptr kAppMemXor = 0x020000000000ull;
303 static const uptr kVdsoBeg = 0x7800000000000000ull;
306 // Indicates the runtime will define the memory regions at runtime.
307 #define TSAN_RUNTIME_VMA 1
310 #elif SANITIZER_GO && !SANITIZER_WINDOWS
312 /* Go on linux, darwin and freebsd
313 0000 0000 1000 - 0000 1000 0000: executable
314 0000 1000 0000 - 00c0 0000 0000: -
315 00c0 0000 0000 - 00e0 0000 0000: heap
316 00e0 0000 0000 - 2000 0000 0000: -
317 2000 0000 0000 - 2380 0000 0000: shadow
318 2380 0000 0000 - 3000 0000 0000: -
319 3000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects)
320 4000 0000 0000 - 6000 0000 0000: -
321 6000 0000 0000 - 6200 0000 0000: traces
322 6200 0000 0000 - 8000 0000 0000: -
326 static const uptr kMetaShadowBeg = 0x300000000000ull;
327 static const uptr kMetaShadowEnd = 0x400000000000ull;
328 static const uptr kTraceMemBeg = 0x600000000000ull;
329 static const uptr kTraceMemEnd = 0x620000000000ull;
330 static const uptr kShadowBeg = 0x200000000000ull;
331 static const uptr kShadowEnd = 0x238000000000ull;
332 static const uptr kAppMemBeg = 0x000000001000ull;
333 static const uptr kAppMemEnd = 0x00e000000000ull;
336 #elif SANITIZER_GO && SANITIZER_WINDOWS
339 0000 0000 1000 - 0000 1000 0000: executable
340 0000 1000 0000 - 00f8 0000 0000: -
341 00c0 0000 0000 - 00e0 0000 0000: heap
342 00e0 0000 0000 - 0100 0000 0000: -
343 0100 0000 0000 - 0500 0000 0000: shadow
344 0500 0000 0000 - 0560 0000 0000: -
345 0560 0000 0000 - 0760 0000 0000: traces
346 0760 0000 0000 - 07d0 0000 0000: metainfo (memory blocks and sync objects)
347 07d0 0000 0000 - 8000 0000 0000: -
351 static const uptr kMetaShadowBeg = 0x076000000000ull;
352 static const uptr kMetaShadowEnd = 0x07d000000000ull;
353 static const uptr kTraceMemBeg = 0x056000000000ull;
354 static const uptr kTraceMemEnd = 0x076000000000ull;
355 static const uptr kShadowBeg = 0x010000000000ull;
356 static const uptr kShadowEnd = 0x050000000000ull;
357 static const uptr kAppMemBeg = 0x000000001000ull;
358 static const uptr kAppMemEnd = 0x00e000000000ull;
362 # error "Unknown platform"
366 #ifdef TSAN_RUNTIME_VMA
376 #ifdef TSAN_MID_APP_RANGE
386 MAPPING_META_SHADOW_BEG,
387 MAPPING_META_SHADOW_END,
393 template<typename Mapping, int Type>
394 uptr MappingImpl(void) {
397 case MAPPING_LO_APP_BEG: return Mapping::kLoAppMemBeg;
398 case MAPPING_LO_APP_END: return Mapping::kLoAppMemEnd;
399 # ifdef TSAN_MID_APP_RANGE
400 case MAPPING_MID_APP_BEG: return Mapping::kMidAppMemBeg;
401 case MAPPING_MID_APP_END: return Mapping::kMidAppMemEnd;
403 case MAPPING_HI_APP_BEG: return Mapping::kHiAppMemBeg;
404 case MAPPING_HI_APP_END: return Mapping::kHiAppMemEnd;
405 case MAPPING_HEAP_BEG: return Mapping::kHeapMemBeg;
406 case MAPPING_HEAP_END: return Mapping::kHeapMemEnd;
407 case MAPPING_VDSO_BEG: return Mapping::kVdsoBeg;
409 case MAPPING_APP_BEG: return Mapping::kAppMemBeg;
410 case MAPPING_APP_END: return Mapping::kAppMemEnd;
412 case MAPPING_SHADOW_BEG: return Mapping::kShadowBeg;
413 case MAPPING_SHADOW_END: return Mapping::kShadowEnd;
414 case MAPPING_META_SHADOW_BEG: return Mapping::kMetaShadowBeg;
415 case MAPPING_META_SHADOW_END: return Mapping::kMetaShadowEnd;
416 case MAPPING_TRACE_BEG: return Mapping::kTraceMemBeg;
417 case MAPPING_TRACE_END: return Mapping::kTraceMemEnd;
422 uptr MappingArchImpl(void) {
423 #if defined(__aarch64__) && !defined(__APPLE__)
425 case 39: return MappingImpl<Mapping39, Type>();
426 case 42: return MappingImpl<Mapping42, Type>();
427 case 48: return MappingImpl<Mapping48, Type>();
431 #elif defined(__powerpc64__)
433 return MappingImpl<Mapping44, Type>();
435 return MappingImpl<Mapping46, Type>();
438 return MappingImpl<Mapping, Type>();
444 uptr LoAppMemBeg(void) {
445 return MappingArchImpl<MAPPING_LO_APP_BEG>();
448 uptr LoAppMemEnd(void) {
449 return MappingArchImpl<MAPPING_LO_APP_END>();
452 #ifdef TSAN_MID_APP_RANGE
454 uptr MidAppMemBeg(void) {
455 return MappingArchImpl<MAPPING_MID_APP_BEG>();
458 uptr MidAppMemEnd(void) {
459 return MappingArchImpl<MAPPING_MID_APP_END>();
464 uptr HeapMemBeg(void) {
465 return MappingArchImpl<MAPPING_HEAP_BEG>();
468 uptr HeapMemEnd(void) {
469 return MappingArchImpl<MAPPING_HEAP_END>();
473 uptr HiAppMemBeg(void) {
474 return MappingArchImpl<MAPPING_HI_APP_BEG>();
477 uptr HiAppMemEnd(void) {
478 return MappingArchImpl<MAPPING_HI_APP_END>();
483 return MappingArchImpl<MAPPING_VDSO_BEG>();
489 uptr AppMemBeg(void) {
490 return MappingArchImpl<MAPPING_APP_BEG>();
493 uptr AppMemEnd(void) {
494 return MappingArchImpl<MAPPING_APP_END>();
500 bool GetUserRegion(int i, uptr *start, uptr *end) {
506 *start = LoAppMemBeg();
507 *end = LoAppMemEnd();
510 *start = HiAppMemBeg();
511 *end = HiAppMemEnd();
514 *start = HeapMemBeg();
517 # ifdef TSAN_MID_APP_RANGE
519 *start = MidAppMemBeg();
520 *end = MidAppMemEnd();
525 *start = AppMemBeg();
533 uptr ShadowBeg(void) {
534 return MappingArchImpl<MAPPING_SHADOW_BEG>();
537 uptr ShadowEnd(void) {
538 return MappingArchImpl<MAPPING_SHADOW_END>();
542 uptr MetaShadowBeg(void) {
543 return MappingArchImpl<MAPPING_META_SHADOW_BEG>();
546 uptr MetaShadowEnd(void) {
547 return MappingArchImpl<MAPPING_META_SHADOW_END>();
551 uptr TraceMemBeg(void) {
552 return MappingArchImpl<MAPPING_TRACE_BEG>();
555 uptr TraceMemEnd(void) {
556 return MappingArchImpl<MAPPING_TRACE_END>();
560 template<typename Mapping>
561 bool IsAppMemImpl(uptr mem) {
563 return (mem >= Mapping::kHeapMemBeg && mem < Mapping::kHeapMemEnd) ||
564 # ifdef TSAN_MID_APP_RANGE
565 (mem >= Mapping::kMidAppMemBeg && mem < Mapping::kMidAppMemEnd) ||
567 (mem >= Mapping::kLoAppMemBeg && mem < Mapping::kLoAppMemEnd) ||
568 (mem >= Mapping::kHiAppMemBeg && mem < Mapping::kHiAppMemEnd);
570 return mem >= Mapping::kAppMemBeg && mem < Mapping::kAppMemEnd;
575 bool IsAppMem(uptr mem) {
576 #if defined(__aarch64__) && !defined(__APPLE__)
578 case 39: return IsAppMemImpl<Mapping39>(mem);
579 case 42: return IsAppMemImpl<Mapping42>(mem);
580 case 48: return IsAppMemImpl<Mapping48>(mem);
584 #elif defined(__powerpc64__)
586 return IsAppMemImpl<Mapping44>(mem);
588 return IsAppMemImpl<Mapping46>(mem);
591 return IsAppMemImpl<Mapping>(mem);
596 template<typename Mapping>
597 bool IsShadowMemImpl(uptr mem) {
598 return mem >= Mapping::kShadowBeg && mem <= Mapping::kShadowEnd;
602 bool IsShadowMem(uptr mem) {
603 #if defined(__aarch64__) && !defined(__APPLE__)
605 case 39: return IsShadowMemImpl<Mapping39>(mem);
606 case 42: return IsShadowMemImpl<Mapping42>(mem);
607 case 48: return IsShadowMemImpl<Mapping48>(mem);
611 #elif defined(__powerpc64__)
613 return IsShadowMemImpl<Mapping44>(mem);
615 return IsShadowMemImpl<Mapping46>(mem);
618 return IsShadowMemImpl<Mapping>(mem);
623 template<typename Mapping>
624 bool IsMetaMemImpl(uptr mem) {
625 return mem >= Mapping::kMetaShadowBeg && mem <= Mapping::kMetaShadowEnd;
629 bool IsMetaMem(uptr mem) {
630 #if defined(__aarch64__) && !defined(__APPLE__)
632 case 39: return IsMetaMemImpl<Mapping39>(mem);
633 case 42: return IsMetaMemImpl<Mapping42>(mem);
634 case 48: return IsMetaMemImpl<Mapping48>(mem);
638 #elif defined(__powerpc64__)
640 return IsMetaMemImpl<Mapping44>(mem);
642 return IsMetaMemImpl<Mapping46>(mem);
645 return IsMetaMemImpl<Mapping>(mem);
650 template<typename Mapping>
651 uptr MemToShadowImpl(uptr x) {
654 return (((x) & ~(Mapping::kAppMemMsk | (kShadowCell - 1)))
655 ^ Mapping::kAppMemXor) * kShadowCnt;
657 # ifndef SANITIZER_WINDOWS
658 return ((x & ~(kShadowCell - 1)) * kShadowCnt) | Mapping::kShadowBeg;
660 return ((x & ~(kShadowCell - 1)) * kShadowCnt) + Mapping::kShadowBeg;
666 uptr MemToShadow(uptr x) {
667 #if defined(__aarch64__) && !defined(__APPLE__)
669 case 39: return MemToShadowImpl<Mapping39>(x);
670 case 42: return MemToShadowImpl<Mapping42>(x);
671 case 48: return MemToShadowImpl<Mapping48>(x);
675 #elif defined(__powerpc64__)
677 return MemToShadowImpl<Mapping44>(x);
679 return MemToShadowImpl<Mapping46>(x);
682 return MemToShadowImpl<Mapping>(x);
687 template<typename Mapping>
688 u32 *MemToMetaImpl(uptr x) {
691 return (u32*)(((((x) & ~(Mapping::kAppMemMsk | (kMetaShadowCell - 1)))) /
692 kMetaShadowCell * kMetaShadowSize) | Mapping::kMetaShadowBeg);
694 # ifndef SANITIZER_WINDOWS
695 return (u32*)(((x & ~(kMetaShadowCell - 1)) / \
696 kMetaShadowCell * kMetaShadowSize) | Mapping::kMetaShadowBeg);
698 return (u32*)(((x & ~(kMetaShadowCell - 1)) / \
699 kMetaShadowCell * kMetaShadowSize) + Mapping::kMetaShadowBeg);
705 u32 *MemToMeta(uptr x) {
706 #if defined(__aarch64__) && !defined(__APPLE__)
708 case 39: return MemToMetaImpl<Mapping39>(x);
709 case 42: return MemToMetaImpl<Mapping42>(x);
710 case 48: return MemToMetaImpl<Mapping48>(x);
714 #elif defined(__powerpc64__)
716 return MemToMetaImpl<Mapping44>(x);
718 return MemToMetaImpl<Mapping46>(x);
721 return MemToMetaImpl<Mapping>(x);
726 template<typename Mapping>
727 uptr ShadowToMemImpl(uptr s) {
728 DCHECK(IsShadowMem(s));
730 // The shadow mapping is non-linear and we've lost some bits, so we don't have
731 // an easy way to restore the original app address. But the mapping is a
732 // bijection, so we try to restore the address as belonging to low/mid/high
733 // range consecutively and see if shadow->app->shadow mapping gives us the
735 uptr p = (s / kShadowCnt) ^ Mapping::kAppMemXor;
736 if (p >= Mapping::kLoAppMemBeg && p < Mapping::kLoAppMemEnd &&
739 # ifdef TSAN_MID_APP_RANGE
740 p = ((s / kShadowCnt) ^ Mapping::kAppMemXor) +
741 (Mapping::kMidAppMemBeg & Mapping::kAppMemMsk);
742 if (p >= Mapping::kMidAppMemBeg && p < Mapping::kMidAppMemEnd &&
746 return ((s / kShadowCnt) ^ Mapping::kAppMemXor) | Mapping::kAppMemMsk;
747 #else // #if !SANITIZER_GO
748 # ifndef SANITIZER_WINDOWS
749 return (s & ~Mapping::kShadowBeg) / kShadowCnt;
751 return (s - Mapping::kShadowBeg) / kShadowCnt;
752 # endif // SANITIZER_WINDOWS
757 uptr ShadowToMem(uptr s) {
758 #if defined(__aarch64__) && !defined(__APPLE__)
760 case 39: return ShadowToMemImpl<Mapping39>(s);
761 case 42: return ShadowToMemImpl<Mapping42>(s);
762 case 48: return ShadowToMemImpl<Mapping48>(s);
766 #elif defined(__powerpc64__)
768 return ShadowToMemImpl<Mapping44>(s);
770 return ShadowToMemImpl<Mapping46>(s);
773 return ShadowToMemImpl<Mapping>(s);
779 // The additional page is to catch shadow stack overflow as paging fault.
780 // Windows wants 64K alignment for mmaps.
781 const uptr kTotalTraceSize = (kTraceSize * sizeof(Event) + sizeof(Trace)
782 + (64 << 10) + (64 << 10) - 1) & ~((64 << 10) - 1);
784 template<typename Mapping>
785 uptr GetThreadTraceImpl(int tid) {
786 uptr p = Mapping::kTraceMemBeg + (uptr)tid * kTotalTraceSize;
787 DCHECK_LT(p, Mapping::kTraceMemEnd);
792 uptr GetThreadTrace(int tid) {
793 #if defined(__aarch64__) && !defined(__APPLE__)
795 case 39: return GetThreadTraceImpl<Mapping39>(tid);
796 case 42: return GetThreadTraceImpl<Mapping42>(tid);
797 case 48: return GetThreadTraceImpl<Mapping48>(tid);
801 #elif defined(__powerpc64__)
803 return GetThreadTraceImpl<Mapping44>(tid);
805 return GetThreadTraceImpl<Mapping46>(tid);
808 return GetThreadTraceImpl<Mapping>(tid);
813 template<typename Mapping>
814 uptr GetThreadTraceHeaderImpl(int tid) {
815 uptr p = Mapping::kTraceMemBeg + (uptr)tid * kTotalTraceSize
816 + kTraceSize * sizeof(Event);
817 DCHECK_LT(p, Mapping::kTraceMemEnd);
822 uptr GetThreadTraceHeader(int tid) {
823 #if defined(__aarch64__) && !defined(__APPLE__)
825 case 39: return GetThreadTraceHeaderImpl<Mapping39>(tid);
826 case 42: return GetThreadTraceHeaderImpl<Mapping42>(tid);
827 case 48: return GetThreadTraceHeaderImpl<Mapping48>(tid);
831 #elif defined(__powerpc64__)
833 return GetThreadTraceHeaderImpl<Mapping44>(tid);
835 return GetThreadTraceHeaderImpl<Mapping46>(tid);
838 return GetThreadTraceHeaderImpl<Mapping>(tid);
842 void InitializePlatform();
843 void InitializePlatformEarly();
844 void CheckAndProtect();
845 void InitializeShadowMemoryPlatform();
846 void FlushShadowMemory();
847 void WriteMemoryProfile(char *buf, uptr buf_size, uptr nthread, uptr nlive);
848 int ExtractResolvFDs(void *state, int *fds, int nfd);
849 int ExtractRecvmsgFDs(void *msg, int *fds, int nfd);
850 void ImitateTlsWrite(ThreadState *thr, uptr tls_addr, uptr tls_size);
852 int call_pthread_cancel_with_cleanup(int(*fn)(void *c, void *m,
853 void *abstime), void *c, void *m, void *abstime,
854 void(*cleanup)(void *arg), void *arg);
856 void DestroyThreadState();
858 } // namespace __tsan
860 #endif // TSAN_PLATFORM_H