| //===-- tsan_platform.h -----------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is a part of ThreadSanitizer (TSan), a race detector. |
| // |
| // Platform-specific code. |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef TSAN_PLATFORM_H |
| #define TSAN_PLATFORM_H |
| |
| #if !defined(__LP64__) && !defined(_WIN64) |
| # error "Only 64-bit is supported" |
| #endif |
| |
| #include "tsan_defs.h" |
| #include "tsan_trace.h" |
| |
| namespace __tsan { |
| |
| #if !defined(SANITIZER_GO) |
| |
| #if defined(__x86_64__) |
| /* |
| C/C++ on linux/x86_64 and freebsd/x86_64 |
| 0000 0000 1000 - 0100 0000 0000: main binary and/or MAP_32BIT mappings |
| 0100 0000 0000 - 0200 0000 0000: - |
| 0200 0000 0000 - 1000 0000 0000: shadow |
| 1000 0000 0000 - 3000 0000 0000: - |
| 3000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects) |
| 4000 0000 0000 - 6000 0000 0000: - |
| 6000 0000 0000 - 6200 0000 0000: traces |
| 6200 0000 0000 - 7d00 0000 0000: - |
| 7d00 0000 0000 - 7e00 0000 0000: heap |
| 7e00 0000 0000 - 7e80 0000 0000: - |
| 7e80 0000 0000 - 8000 0000 0000: modules and main thread stack |
| */ |
| const uptr kMetaShadowBeg = 0x300000000000ull; |
| const uptr kMetaShadowEnd = 0x400000000000ull; |
| const uptr kTraceMemBeg = 0x600000000000ull; |
| const uptr kTraceMemEnd = 0x620000000000ull; |
| const uptr kShadowBeg = 0x020000000000ull; |
| const uptr kShadowEnd = 0x100000000000ull; |
| const uptr kHeapMemBeg = 0x7d0000000000ull; |
| const uptr kHeapMemEnd = 0x7e0000000000ull; |
| const uptr kLoAppMemBeg = 0x000000001000ull; |
| const uptr kLoAppMemEnd = 0x010000000000ull; |
| const uptr kHiAppMemBeg = 0x7e8000000000ull; |
| const uptr kHiAppMemEnd = 0x800000000000ull; |
| const uptr kAppMemMsk = 0x7c0000000000ull; |
| const uptr kAppMemXor = 0x020000000000ull; |
| const uptr kVdsoBeg = 0xf000000000000000ull; |
| #elif defined(__mips64) |
| /* |
| C/C++ on linux/mips64 |
| 0100 0000 00 - 0200 0000 00: main binary |
| 0200 0000 00 - 1400 0000 00: - |
| 1400 0000 00 - 2400 0000 00: shadow |
| 2400 0000 00 - 3000 0000 00: - |
| 3000 0000 00 - 4000 0000 00: metainfo (memory blocks and sync objects) |
| 4000 0000 00 - 6000 0000 00: - |
| 6000 0000 00 - 6200 0000 00: traces |
| 6200 0000 00 - fe00 0000 00: - |
| fe00 0000 00 - ff00 0000 00: heap |
| ff00 0000 00 - ff80 0000 00: - |
| ff80 0000 00 - ffff ffff ff: modules and main thread stack |
| */ |
| const uptr kMetaShadowBeg = 0x3000000000ull; |
| const uptr kMetaShadowEnd = 0x4000000000ull; |
| const uptr kTraceMemBeg = 0x6000000000ull; |
| const uptr kTraceMemEnd = 0x6200000000ull; |
| const uptr kShadowBeg = 0x1400000000ull; |
| const uptr kShadowEnd = 0x2400000000ull; |
| const uptr kHeapMemBeg = 0xfe00000000ull; |
| const uptr kHeapMemEnd = 0xff00000000ull; |
| const uptr kLoAppMemBeg = 0x0100000000ull; |
| const uptr kLoAppMemEnd = 0x0200000000ull; |
| const uptr kHiAppMemBeg = 0xff80000000ull; |
| const uptr kHiAppMemEnd = 0xffffffffffull; |
| const uptr kAppMemMsk = 0xfc00000000ull; |
| const uptr kAppMemXor = 0x0400000000ull; |
| const uptr kVdsoBeg = 0xfffff00000ull; |
| #endif |
| |
| ALWAYS_INLINE |
| bool IsAppMem(uptr mem) { |
| return (mem >= kHeapMemBeg && mem < kHeapMemEnd) || |
| (mem >= kLoAppMemBeg && mem < kLoAppMemEnd) || |
| (mem >= kHiAppMemBeg && mem < kHiAppMemEnd); |
| } |
| |
| ALWAYS_INLINE |
| bool IsShadowMem(uptr mem) { |
| return mem >= kShadowBeg && mem <= kShadowEnd; |
| } |
| |
| ALWAYS_INLINE |
| bool IsMetaMem(uptr mem) { |
| return mem >= kMetaShadowBeg && mem <= kMetaShadowEnd; |
| } |
| |
| ALWAYS_INLINE |
| uptr MemToShadow(uptr x) { |
| DCHECK(IsAppMem(x)); |
| return (((x) & ~(kAppMemMsk | (kShadowCell - 1))) |
| ^ kAppMemXor) * kShadowCnt; |
| } |
| |
| ALWAYS_INLINE |
| u32 *MemToMeta(uptr x) { |
| DCHECK(IsAppMem(x)); |
| return (u32*)(((((x) & ~(kAppMemMsk | (kMetaShadowCell - 1))) |
| ^ kAppMemXor) / kMetaShadowCell * kMetaShadowSize) | kMetaShadowBeg); |
| } |
| |
| ALWAYS_INLINE |
| uptr ShadowToMem(uptr s) { |
| CHECK(IsShadowMem(s)); |
| if (s >= MemToShadow(kLoAppMemBeg) && s <= MemToShadow(kLoAppMemEnd - 1)) |
| return (s / kShadowCnt) ^ kAppMemXor; |
| else |
| return ((s / kShadowCnt) ^ kAppMemXor) | kAppMemMsk; |
| } |
| |
| static USED uptr UserRegions[] = { |
| kLoAppMemBeg, kLoAppMemEnd, |
| kHiAppMemBeg, kHiAppMemEnd, |
| kHeapMemBeg, kHeapMemEnd, |
| }; |
| |
| #elif defined(SANITIZER_GO) && !SANITIZER_WINDOWS |
| |
| /* Go on linux, darwin and freebsd |
| 0000 0000 1000 - 0000 1000 0000: executable |
| 0000 1000 0000 - 00c0 0000 0000: - |
| 00c0 0000 0000 - 00e0 0000 0000: heap |
| 00e0 0000 0000 - 2000 0000 0000: - |
| 2000 0000 0000 - 2380 0000 0000: shadow |
| 2380 0000 0000 - 3000 0000 0000: - |
| 3000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects) |
| 4000 0000 0000 - 6000 0000 0000: - |
| 6000 0000 0000 - 6200 0000 0000: traces |
| 6200 0000 0000 - 8000 0000 0000: - |
| */ |
| |
| const uptr kMetaShadowBeg = 0x300000000000ull; |
| const uptr kMetaShadowEnd = 0x400000000000ull; |
| const uptr kTraceMemBeg = 0x600000000000ull; |
| const uptr kTraceMemEnd = 0x620000000000ull; |
| const uptr kShadowBeg = 0x200000000000ull; |
| const uptr kShadowEnd = 0x238000000000ull; |
| const uptr kAppMemBeg = 0x000000001000ull; |
| const uptr kAppMemEnd = 0x00e000000000ull; |
| |
| ALWAYS_INLINE |
| bool IsAppMem(uptr mem) { |
| return mem >= kAppMemBeg && mem < kAppMemEnd; |
| } |
| |
| ALWAYS_INLINE |
| bool IsShadowMem(uptr mem) { |
| return mem >= kShadowBeg && mem <= kShadowEnd; |
| } |
| |
| ALWAYS_INLINE |
| bool IsMetaMem(uptr mem) { |
| return mem >= kMetaShadowBeg && mem <= kMetaShadowEnd; |
| } |
| |
| ALWAYS_INLINE |
| uptr MemToShadow(uptr x) { |
| DCHECK(IsAppMem(x)); |
| return ((x & ~(kShadowCell - 1)) * kShadowCnt) | kShadowBeg; |
| } |
| |
| ALWAYS_INLINE |
| u32 *MemToMeta(uptr x) { |
| DCHECK(IsAppMem(x)); |
| return (u32*)(((x & ~(kMetaShadowCell - 1)) / \ |
| kMetaShadowCell * kMetaShadowSize) | kMetaShadowBeg); |
| } |
| |
| ALWAYS_INLINE |
| uptr ShadowToMem(uptr s) { |
| CHECK(IsShadowMem(s)); |
| return (s & ~kShadowBeg) / kShadowCnt; |
| } |
| |
| static USED uptr UserRegions[] = { |
| kAppMemBeg, kAppMemEnd, |
| }; |
| |
| #elif defined(SANITIZER_GO) && SANITIZER_WINDOWS |
| |
| /* Go on windows |
| 0000 0000 1000 - 0000 1000 0000: executable |
| 0000 1000 0000 - 00f8 0000 0000: - |
| 00c0 0000 0000 - 00e0 0000 0000: heap |
| 00e0 0000 0000 - 0100 0000 0000: - |
| 0100 0000 0000 - 0500 0000 0000: shadow |
| 0500 0000 0000 - 0560 0000 0000: - |
| 0560 0000 0000 - 0760 0000 0000: traces |
| 0760 0000 0000 - 07d0 0000 0000: metainfo (memory blocks and sync objects) |
| 07d0 0000 0000 - 8000 0000 0000: - |
| */ |
| |
| const uptr kMetaShadowBeg = 0x076000000000ull; |
| const uptr kMetaShadowEnd = 0x07d000000000ull; |
| const uptr kTraceMemBeg = 0x056000000000ull; |
| const uptr kTraceMemEnd = 0x076000000000ull; |
| const uptr kShadowBeg = 0x010000000000ull; |
| const uptr kShadowEnd = 0x050000000000ull; |
| const uptr kAppMemBeg = 0x000000001000ull; |
| const uptr kAppMemEnd = 0x00e000000000ull; |
| |
| ALWAYS_INLINE |
| bool IsAppMem(uptr mem) { |
| return mem >= kAppMemBeg && mem < kAppMemEnd; |
| } |
| |
| ALWAYS_INLINE |
| bool IsShadowMem(uptr mem) { |
| return mem >= kShadowBeg && mem <= kShadowEnd; |
| } |
| |
| ALWAYS_INLINE |
| bool IsMetaMem(uptr mem) { |
| return mem >= kMetaShadowBeg && mem <= kMetaShadowEnd; |
| } |
| |
| ALWAYS_INLINE |
| uptr MemToShadow(uptr x) { |
| DCHECK(IsAppMem(x)); |
| return ((x & ~(kShadowCell - 1)) * kShadowCnt) + kShadowBeg; |
| } |
| |
| ALWAYS_INLINE |
| u32 *MemToMeta(uptr x) { |
| DCHECK(IsAppMem(x)); |
| return (u32*)(((x & ~(kMetaShadowCell - 1)) / \ |
| kMetaShadowCell * kMetaShadowSize) | kMetaShadowBeg); |
| } |
| |
| ALWAYS_INLINE |
| uptr ShadowToMem(uptr s) { |
| CHECK(IsShadowMem(s)); |
| // FIXME(dvyukov): this is most likely wrong as the mapping is not bijection. |
| return (s - kShadowBeg) / kShadowCnt; |
| } |
| |
| static USED uptr UserRegions[] = { |
| kAppMemBeg, kAppMemEnd, |
| }; |
| |
| #else |
| # error "Unknown platform" |
| #endif |
| |
| // The additional page is to catch shadow stack overflow as paging fault. |
| // Windows wants 64K alignment for mmaps. |
| const uptr kTotalTraceSize = (kTraceSize * sizeof(Event) + sizeof(Trace) |
| + (64 << 10) + (64 << 10) - 1) & ~((64 << 10) - 1); |
| |
| uptr ALWAYS_INLINE GetThreadTrace(int tid) { |
| uptr p = kTraceMemBeg + (uptr)tid * kTotalTraceSize; |
| DCHECK_LT(p, kTraceMemEnd); |
| return p; |
| } |
| |
| uptr ALWAYS_INLINE GetThreadTraceHeader(int tid) { |
| uptr p = kTraceMemBeg + (uptr)tid * kTotalTraceSize |
| + kTraceSize * sizeof(Event); |
| DCHECK_LT(p, kTraceMemEnd); |
| return p; |
| } |
| |
| void InitializePlatform(); |
| void FlushShadowMemory(); |
| void WriteMemoryProfile(char *buf, uptr buf_size, uptr nthread, uptr nlive); |
| |
| // Says whether the addr relates to a global var. |
| // Guesses with high probability, may yield both false positives and negatives. |
| bool IsGlobalVar(uptr addr); |
| int ExtractResolvFDs(void *state, int *fds, int nfd); |
| int ExtractRecvmsgFDs(void *msg, int *fds, int nfd); |
| |
| int call_pthread_cancel_with_cleanup(int(*fn)(void *c, void *m, |
| void *abstime), void *c, void *m, void *abstime, |
| void(*cleanup)(void *arg), void *arg); |
| |
| } // namespace __tsan |
| |
| #endif // TSAN_PLATFORM_H |