105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
//===-- tsan_platform.h -----------------------------------------*- C++ -*-===//
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of ThreadSanitizer (TSan), a race detector.
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//
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// Platform-specific code.
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//===----------------------------------------------------------------------===//
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#ifndef TSAN_PLATFORM_H
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#define TSAN_PLATFORM_H
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#include "tsan_rtl.h"
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#if defined(__LP64__) || defined(_WIN64)
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namespace __tsan {
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#if defined(TSAN_GO)
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static const uptr kLinuxAppMemBeg = 0x000000000000ULL;
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static const uptr kLinuxAppMemEnd = 0x00fcffffffffULL;
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# if defined(_WIN32)
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static const uptr kLinuxShadowMsk = 0x010000000000ULL;
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# else
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static const uptr kLinuxShadowMsk = 0x100000000000ULL;
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# endif
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// TSAN_COMPAT_SHADOW is intended for COMPAT virtual memory layout,
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// when memory addresses are of the 0x2axxxxxxxxxx form.
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// The option is enabled with 'setarch x86_64 -L'.
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#elif defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW
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static const uptr kLinuxAppMemBeg = 0x290000000000ULL;
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static const uptr kLinuxAppMemEnd = 0x7fffffffffffULL;
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#else
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static const uptr kLinuxAppMemBeg = 0x7cf000000000ULL;
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static const uptr kLinuxAppMemEnd = 0x7fffffffffffULL;
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#endif
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static const uptr kLinuxAppMemMsk = 0x7c0000000000ULL;
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// This has to be a macro to allow constant initialization of constants below.
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#ifndef TSAN_GO
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#define MemToShadow(addr) \
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(((addr) & ~(kLinuxAppMemMsk | (kShadowCell - 1))) * kShadowCnt)
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#else
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#define MemToShadow(addr) \
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((((addr) & ~(kShadowCell - 1)) * kShadowCnt) | kLinuxShadowMsk)
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#endif
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static const uptr kLinuxShadowBeg = MemToShadow(kLinuxAppMemBeg);
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static const uptr kLinuxShadowEnd =
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MemToShadow(kLinuxAppMemEnd) | 0xff;
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static inline bool IsAppMem(uptr mem) {
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return mem >= kLinuxAppMemBeg && mem <= kLinuxAppMemEnd;
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}
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static inline bool IsShadowMem(uptr mem) {
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return mem >= kLinuxShadowBeg && mem <= kLinuxShadowEnd;
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}
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static inline uptr ShadowToMem(uptr shadow) {
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CHECK(IsShadowMem(shadow));
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#ifdef TSAN_GO
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return (shadow & ~kLinuxShadowMsk) / kShadowCnt;
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#else
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return (shadow / kShadowCnt) | kLinuxAppMemMsk;
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#endif
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}
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// For COMPAT mapping returns an alternative address
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// that mapped to the same shadow address.
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// COMPAT mapping is not quite one-to-one.
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static inline uptr AlternativeAddress(uptr addr) {
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#if defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW
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return (addr & ~kLinuxAppMemMsk) | 0x280000000000ULL;
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#else
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return 0;
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#endif
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}
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uptr GetShadowMemoryConsumption();
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void FlushShadowMemory();
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const char *InitializePlatform();
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void FinalizePlatform();
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void internal_start_thread(void(*func)(void*), void *arg);
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// Says whether the addr relates to a global var.
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// Guesses with high probability, may yield both false positives and negatives.
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bool IsGlobalVar(uptr addr);
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uptr GetTlsSize();
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void GetThreadStackAndTls(bool main, uptr *stk_addr, uptr *stk_size,
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uptr *tls_addr, uptr *tls_size);
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} // namespace __tsan
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#else // defined(__LP64__) || defined(_WIN64)
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# error "Only 64-bit is supported"
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#endif
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#endif // TSAN_PLATFORM_H
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