| //===-- 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 |
| |
| #include "tsan_rtl.h" |
| |
| #if __LP64__ |
| namespace __tsan { |
| |
| #if defined(TSAN_GO) |
| static const uptr kLinuxAppMemBeg = 0x000000000000ULL; |
| static const uptr kLinuxAppMemEnd = 0x00fcffffffffULL; |
| static const uptr kLinuxShadowMsk = 0x100000000000ULL; |
| // TSAN_COMPAT_SHADOW is intended for COMPAT virtual memory layout, |
| // when memory addresses are of the 0x2axxxxxxxxxx form. |
| // The option is enabled with 'setarch x86_64 -L'. |
| #elif defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW |
| static const uptr kLinuxAppMemBeg = 0x290000000000ULL; |
| static const uptr kLinuxAppMemEnd = 0x7fffffffffffULL; |
| #else |
| static const uptr kLinuxAppMemBeg = 0x7cf000000000ULL; |
| static const uptr kLinuxAppMemEnd = 0x7fffffffffffULL; |
| #endif |
| |
| static const uptr kLinuxAppMemMsk = 0x7c0000000000ULL; |
| |
| // This has to be a macro to allow constant initialization of constants below. |
| #ifndef TSAN_GO |
| #define MemToShadow(addr) \ |
| (((addr) & ~(kLinuxAppMemMsk | (kShadowCell - 1))) * kShadowCnt) |
| #else |
| #define MemToShadow(addr) \ |
| ((((addr) & ~(kShadowCell - 1)) * kShadowCnt) | kLinuxShadowMsk) |
| #endif |
| |
| static const uptr kLinuxShadowBeg = MemToShadow(kLinuxAppMemBeg); |
| static const uptr kLinuxShadowEnd = |
| MemToShadow(kLinuxAppMemEnd) | (kPageSize - 1); |
| |
| static inline bool IsAppMem(uptr mem) { |
| return mem >= kLinuxAppMemBeg && mem <= kLinuxAppMemEnd; |
| } |
| |
| static inline bool IsShadowMem(uptr mem) { |
| return mem >= kLinuxShadowBeg && mem <= kLinuxShadowEnd; |
| } |
| |
| static inline uptr ShadowToMem(uptr shadow) { |
| CHECK(IsShadowMem(shadow)); |
| #ifdef TSAN_GO |
| return (shadow & ~kLinuxShadowMsk) / kShadowCnt; |
| #else |
| return (shadow / kShadowCnt) | kLinuxAppMemMsk; |
| #endif |
| } |
| |
| // For COMPAT mapping returns an alternative address |
| // that mapped to the same shadow address. |
| // COMPAT mapping is not quite one-to-one. |
| static inline uptr AlternativeAddress(uptr addr) { |
| #if defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW |
| return (addr & ~kLinuxAppMemMsk) | 0x280000000000ULL; |
| #else |
| return 0; |
| #endif |
| } |
| |
| uptr GetShadowMemoryConsumption(); |
| void FlushShadowMemory(); |
| |
| const char *InitializePlatform(); |
| void FinalizePlatform(); |
| |
| void internal_start_thread(void(*func)(void*), void *arg); |
| |
| uptr GetTlsSize(); |
| void GetThreadStackAndTls(bool main, uptr *stk_addr, uptr *stk_size, |
| uptr *tls_addr, uptr *tls_size); |
| |
| } // namespace __tsan |
| |
| #else // __LP64__ |
| # error "Only 64-bit is supported" |
| #endif |
| |
| #endif // TSAN_PLATFORM_H |