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//===-- 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_LINUX_H
#define TSAN_LINUX_H
#ifdef __linux__
#include "tsan_rtl.h"
#if __LP64__
namespace __tsan {
// 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'.
#if defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW
static const uptr kLinuxAppMemBeg = 0x2a0000000000ULL;
static const uptr kLinuxAppMemEnd = 0x7fffffffffffULL;
#else
static const uptr kLinuxAppMemBeg = 0x7ef000000000ULL;
static const uptr kLinuxAppMemEnd = 0x7fffffffffffULL;
#endif
static const uptr kLinuxAppMemMsk = 0x7c0000000000ULL;
// This has to be a macro to allow constant initialization of constants below.
#define MemToShadow(addr) \
(((addr) & ~(kLinuxAppMemMsk | (kShadowCell - 1))) * kShadowCnt)
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));
#if defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW
// COMPAT mapping is not quite one-to-one.
return (shadow / kShadowCnt) | 0x280000000000ULL;
#else
return (shadow / kShadowCnt) | kLinuxAppMemMsk;
#endif
}
const char *InitializePlatform();
void FinalizePlatform();
int GetPid();
void sched_yield();
typedef int fd_t;
const fd_t kInvalidFd = -1;
fd_t internal_open(const char *name, bool write);
void internal_close(fd_t fd);
uptr internal_filesize(fd_t fd); // -1 on error.
uptr internal_read(fd_t fd, void *p, uptr size);
uptr internal_write(fd_t fd, const void *p, uptr size);
const char *internal_getpwd();
uptr GetTlsSize();
void GetThreadStackAndTls(uptr *stk_addr, uptr *stk_size,
uptr *tls_addr, uptr *tls_size);
} // namespace __tsan
#else // __LP64__
# error "Only 64-bit is supported"
#endif
#endif // __linux__
#endif // TSAN_LINUX_H
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