Retro68/gcc/libsanitizer/tsan/tsan_platform.h

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//===-- tsan_platform.h -----------------------------------------*- C++ -*-===//
//
// 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.
//===----------------------------------------------------------------------===//
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#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 {
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#if !defined(SANITIZER_GO)
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#if defined(__x86_64__)
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/*
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C/C++ on linux/x86_64 and freebsd/x86_64
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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: -
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6000 0000 0000 - 6200 0000 0000: traces
6200 0000 0000 - 7d00 0000 0000: -
7d00 0000 0000 - 7e00 0000 0000: heap
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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;
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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;
#elif defined(__aarch64__)
# if SANITIZER_AARCH64_VMA == 39
/*
C/C++ on linux/aarch64 (39-bit VMA)
0000 4000 00 - 0200 0000 00: main binary
2000 0000 00 - 4000 0000 00: shadow memory
4000 0000 00 - 5000 0000 00: metainfo
5000 0000 00 - 6000 0000 00: -
6000 0000 00 - 6200 0000 00: traces
6200 0000 00 - 7d00 0000 00: -
7d00 0000 00 - 7e00 0000 00: heap
7e00 0000 00 - 7fff ffff ff: modules and main thread stack
*/
const uptr kLoAppMemBeg = 0x0000400000ull;
const uptr kLoAppMemEnd = 0x0200000000ull;
const uptr kShadowBeg = 0x2000000000ull;
const uptr kShadowEnd = 0x4000000000ull;
const uptr kMetaShadowBeg = 0x4000000000ull;
const uptr kMetaShadowEnd = 0x5000000000ull;
const uptr kTraceMemBeg = 0x6000000000ull;
const uptr kTraceMemEnd = 0x6200000000ull;
const uptr kHeapMemBeg = 0x7d00000000ull;
const uptr kHeapMemEnd = 0x7e00000000ull;
const uptr kHiAppMemBeg = 0x7e00000000ull;
const uptr kHiAppMemEnd = 0x7fffffffffull;
const uptr kAppMemMsk = 0x7800000000ull;
const uptr kAppMemXor = 0x0800000000ull;
const uptr kVdsoBeg = 0x7f00000000ull;
# elif SANITIZER_AARCH64_VMA == 42
/*
C/C++ on linux/aarch64 (42-bit VMA)
00000 4000 00 - 01000 0000 00: main binary
01000 0000 00 - 10000 0000 00: -
10000 0000 00 - 20000 0000 00: shadow memory
20000 0000 00 - 26000 0000 00: -
26000 0000 00 - 28000 0000 00: metainfo
28000 0000 00 - 36200 0000 00: -
36200 0000 00 - 36240 0000 00: traces
36240 0000 00 - 3e000 0000 00: -
3e000 0000 00 - 3f000 0000 00: heap
3c000 0000 00 - 3ff00 0000 00: -
3ff00 0000 00 - 3ffff f000 00: modules and main thread stack
*/
const uptr kLoAppMemBeg = 0x00000400000ull;
const uptr kLoAppMemEnd = 0x01000000000ull;
const uptr kShadowBeg = 0x10000000000ull;
const uptr kShadowEnd = 0x20000000000ull;
const uptr kMetaShadowBeg = 0x26000000000ull;
const uptr kMetaShadowEnd = 0x28000000000ull;
const uptr kTraceMemBeg = 0x36200000000ull;
const uptr kTraceMemEnd = 0x36400000000ull;
const uptr kHeapMemBeg = 0x3e000000000ull;
const uptr kHeapMemEnd = 0x3f000000000ull;
const uptr kHiAppMemBeg = 0x3ff00000000ull;
const uptr kHiAppMemEnd = 0x3fffff00000ull;
const uptr kAppMemMsk = 0x3c000000000ull;
const uptr kAppMemXor = 0x04000000000ull;
const uptr kVdsoBeg = 0x37f00000000ull;
# endif
#endif
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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,
};
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#elif defined(SANITIZER_GO) && !SANITIZER_WINDOWS
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/* Go on linux, darwin and freebsd
0000 0000 1000 - 0000 1000 0000: executable
0000 1000 0000 - 00c0 0000 0000: -
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00c0 0000 0000 - 00e0 0000 0000: heap
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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: -
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*/
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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;
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ALWAYS_INLINE
bool IsAppMem(uptr mem) {
return mem >= kAppMemBeg && mem < kAppMemEnd;
}
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ALWAYS_INLINE
bool IsShadowMem(uptr mem) {
return mem >= kShadowBeg && mem <= kShadowEnd;
}
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ALWAYS_INLINE
bool IsMetaMem(uptr mem) {
return mem >= kMetaShadowBeg && mem <= kMetaShadowEnd;
}
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ALWAYS_INLINE
uptr MemToShadow(uptr x) {
DCHECK(IsAppMem(x));
return ((x & ~(kShadowCell - 1)) * kShadowCnt) | kShadowBeg;
}
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ALWAYS_INLINE
u32 *MemToMeta(uptr x) {
DCHECK(IsAppMem(x));
return (u32*)(((x & ~(kMetaShadowCell - 1)) / \
kMetaShadowCell * kMetaShadowSize) | kMetaShadowBeg);
}
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ALWAYS_INLINE
uptr ShadowToMem(uptr s) {
CHECK(IsShadowMem(s));
return (s & ~kShadowBeg) / kShadowCnt;
}
static USED uptr UserRegions[] = {
kAppMemBeg, kAppMemEnd,
};
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#elif defined(SANITIZER_GO) && SANITIZER_WINDOWS
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/* 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: -
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0100 0000 0000 - 0500 0000 0000: shadow
0500 0000 0000 - 0560 0000 0000: -
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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: -
*/
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const uptr kMetaShadowBeg = 0x076000000000ull;
const uptr kMetaShadowEnd = 0x07d000000000ull;
const uptr kTraceMemBeg = 0x056000000000ull;
const uptr kTraceMemEnd = 0x076000000000ull;
const uptr kShadowBeg = 0x010000000000ull;
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const uptr kShadowEnd = 0x050000000000ull;
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const uptr kAppMemBeg = 0x000000001000ull;
const uptr kAppMemEnd = 0x00e000000000ull;
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ALWAYS_INLINE
bool IsAppMem(uptr mem) {
return mem >= kAppMemBeg && mem < kAppMemEnd;
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}
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ALWAYS_INLINE
bool IsShadowMem(uptr mem) {
return mem >= kShadowBeg && mem <= kShadowEnd;
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}
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ALWAYS_INLINE
bool IsMetaMem(uptr mem) {
return mem >= kMetaShadowBeg && mem <= kMetaShadowEnd;
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}
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ALWAYS_INLINE
uptr MemToShadow(uptr x) {
DCHECK(IsAppMem(x));
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return ((x & ~(kShadowCell - 1)) * kShadowCnt) + kShadowBeg;
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}
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ALWAYS_INLINE
u32 *MemToMeta(uptr x) {
DCHECK(IsAppMem(x));
return (u32*)(((x & ~(kMetaShadowCell - 1)) / \
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kMetaShadowCell * kMetaShadowSize) | kMetaShadowBeg);
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}
ALWAYS_INLINE
uptr ShadowToMem(uptr s) {
CHECK(IsShadowMem(s));
// FIXME(dvyukov): this is most likely wrong as the mapping is not bijection.
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return (s - kShadowBeg) / kShadowCnt;
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}
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static USED uptr UserRegions[] = {
kAppMemBeg, kAppMemEnd,
};
#else
# error "Unknown platform"
#endif
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// The additional page is to catch shadow stack overflow as paging fault.
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// Windows wants 64K alignment for mmaps.
const uptr kTotalTraceSize = (kTraceSize * sizeof(Event) + sizeof(Trace)
+ (64 << 10) + (64 << 10) - 1) & ~((64 << 10) - 1);
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uptr ALWAYS_INLINE GetThreadTrace(int tid) {
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uptr p = kTraceMemBeg + (uptr)tid * kTotalTraceSize;
DCHECK_LT(p, kTraceMemEnd);
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return p;
}
uptr ALWAYS_INLINE GetThreadTraceHeader(int tid) {
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uptr p = kTraceMemBeg + (uptr)tid * kTotalTraceSize
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+ kTraceSize * sizeof(Event);
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DCHECK_LT(p, kTraceMemEnd);
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return p;
}
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void InitializePlatform();
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void CheckAndProtect();
void InitializeShadowMemoryPlatform();
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void FlushShadowMemory();
void WriteMemoryProfile(char *buf, uptr buf_size, uptr nthread, uptr nlive);
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// 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);
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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);
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void DestroyThreadState();
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} // namespace __tsan
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#endif // TSAN_PLATFORM_H