blob: 7c13c7335136b437a8419c013203e4d945147322 [file] [log] [blame]
//===-- tsan_platform.h -----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// 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 "sanitizer_common/sanitizer_common.h"
#include "tsan_defs.h"
namespace __tsan {
enum {
// App memory is not mapped onto shadow memory range.
kBrokenMapping = 1 << 0,
// Mapping app memory and back does not produce the same address,
// this can lead to wrong addresses in reports and potentially
// other bad consequences.
kBrokenReverseMapping = 1 << 1,
// Mapping is non-linear for linear user range.
// This is bad and can lead to unpredictable memory corruptions, etc
// because range access functions assume linearity.
kBrokenLinearity = 1 << 2,
};
/*
C/C++ on linux/x86_64 and freebsd/x86_64
0000 0000 1000 - 0080 0000 0000: main binary and/or MAP_32BIT mappings (512GB)
0040 0000 0000 - 0100 0000 0000: -
0100 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 - 5500 0000 0000: -
5500 0000 0000 - 5680 0000 0000: pie binaries without ASLR or on 4.1+ kernels
5680 0000 0000 - 7d00 0000 0000: -
7b00 0000 0000 - 7c00 0000 0000: heap
7c00 0000 0000 - 7e80 0000 0000: -
7e80 0000 0000 - 8000 0000 0000: modules and main thread stack
C/C++ on netbsd/amd64 can reuse the same mapping:
* The address space starts from 0x1000 (option with 0x0) and ends with
0x7f7ffffff000.
* LoAppMem-kHeapMemEnd can be reused as it is.
* No VDSO support.
* No MidAppMem region.
* No additional HeapMem region.
* HiAppMem contains the stack, loader, shared libraries and heap.
* Stack on NetBSD/amd64 has prereserved 128MB.
* Heap grows downwards (top-down).
* ASLR must be disabled per-process or globally.
*/
struct Mapping48AddressSpace {
static const uptr kMetaShadowBeg = 0x300000000000ull;
static const uptr kMetaShadowEnd = 0x340000000000ull;
static const uptr kShadowBeg = 0x010000000000ull;
static const uptr kShadowEnd = 0x100000000000ull;
static const uptr kHeapMemBeg = 0x7b0000000000ull;
static const uptr kHeapMemEnd = 0x7c0000000000ull;
static const uptr kLoAppMemBeg = 0x000000001000ull;
static const uptr kLoAppMemEnd = 0x008000000000ull;
static const uptr kMidAppMemBeg = 0x550000000000ull;
static const uptr kMidAppMemEnd = 0x568000000000ull;
static const uptr kHiAppMemBeg = 0x7e8000000000ull;
static const uptr kHiAppMemEnd = 0x800000000000ull;
static const uptr kShadowMsk = 0x780000000000ull;
static const uptr kShadowXor = 0x040000000000ull;
static const uptr kShadowAdd = 0x000000000000ull;
static const uptr kVdsoBeg = 0xf000000000000000ull;
};
/*
C/C++ on linux/mips64 (40-bit VMA)
0000 0000 00 - 0100 0000 00: - (4 GB)
0100 0000 00 - 0200 0000 00: main binary (4 GB)
0200 0000 00 - 1200 0000 00: - (64 GB)
1200 0000 00 - 2200 0000 00: shadow (64 GB)
2200 0000 00 - 4000 0000 00: - (120 GB)
4000 0000 00 - 5000 0000 00: metainfo (memory blocks and sync objects) (64 GB)
5000 0000 00 - aa00 0000 00: - (360 GB)
aa00 0000 00 - ab00 0000 00: main binary (PIE) (4 GB)
ab00 0000 00 - fe00 0000 00: - (332 GB)
fe00 0000 00 - ff00 0000 00: heap (4 GB)
ff00 0000 00 - ff80 0000 00: - (2 GB)
ff80 0000 00 - ffff ffff ff: modules and main thread stack (<2 GB)
*/
struct MappingMips64_40 {
static const uptr kMetaShadowBeg = 0x4000000000ull;
static const uptr kMetaShadowEnd = 0x5000000000ull;
static const uptr kShadowBeg = 0x1200000000ull;
static const uptr kShadowEnd = 0x2200000000ull;
static const uptr kHeapMemBeg = 0xfe00000000ull;
static const uptr kHeapMemEnd = 0xff00000000ull;
static const uptr kLoAppMemBeg = 0x0100000000ull;
static const uptr kLoAppMemEnd = 0x0200000000ull;
static const uptr kMidAppMemBeg = 0xaa00000000ull;
static const uptr kMidAppMemEnd = 0xab00000000ull;
static const uptr kHiAppMemBeg = 0xff80000000ull;
static const uptr kHiAppMemEnd = 0xffffffffffull;
static const uptr kShadowMsk = 0xf800000000ull;
static const uptr kShadowXor = 0x0800000000ull;
static const uptr kShadowAdd = 0x0000000000ull;
static const uptr kVdsoBeg = 0xfffff00000ull;
};
/*
C/C++ on Darwin/iOS/ARM64 (36-bit VMA, 64 GB VM)
0000 0000 00 - 0100 0000 00: - (4 GB)
0100 0000 00 - 0200 0000 00: main binary, modules, thread stacks (4 GB)
0200 0000 00 - 0300 0000 00: heap (4 GB)
0300 0000 00 - 0400 0000 00: - (4 GB)
0400 0000 00 - 0800 0000 00: shadow memory (16 GB)
0800 0000 00 - 0d00 0000 00: - (20 GB)
0d00 0000 00 - 0e00 0000 00: metainfo (4 GB)
0e00 0000 00 - 1000 0000 00: -
*/
struct MappingAppleAarch64 {
static const uptr kLoAppMemBeg = 0x0100000000ull;
static const uptr kLoAppMemEnd = 0x0200000000ull;
static const uptr kHeapMemBeg = 0x0200000000ull;
static const uptr kHeapMemEnd = 0x0300000000ull;
static const uptr kShadowBeg = 0x0400000000ull;
static const uptr kShadowEnd = 0x0800000000ull;
static const uptr kMetaShadowBeg = 0x0d00000000ull;
static const uptr kMetaShadowEnd = 0x0e00000000ull;
static const uptr kHiAppMemBeg = 0x0fc0000000ull;
static const uptr kHiAppMemEnd = 0x0fc0000000ull;
static const uptr kShadowMsk = 0x0ull;
static const uptr kShadowXor = 0x0ull;
static const uptr kShadowAdd = 0x0200000000ull;
static const uptr kVdsoBeg = 0x7000000000000000ull;
static const uptr kMidAppMemBeg = 0;
static const uptr kMidAppMemEnd = 0;
};
/*
C/C++ on linux/aarch64 (39-bit VMA)
0000 0010 00 - 0100 0000 00: main binary
0100 0000 00 - 0400 0000 00: -
0400 0000 00 - 1000 0000 00: shadow memory
2000 0000 00 - 3100 0000 00: -
3100 0000 00 - 3400 0000 00: metainfo
3400 0000 00 - 5500 0000 00: -
5500 0000 00 - 5600 0000 00: main binary (PIE)
5600 0000 00 - 7c00 0000 00: -
7c00 0000 00 - 7d00 0000 00: heap
7d00 0000 00 - 7fff ffff ff: modules and main thread stack
*/
struct MappingAarch64_39 {
static const uptr kLoAppMemBeg = 0x0000001000ull;
static const uptr kLoAppMemEnd = 0x0100000000ull;
static const uptr kShadowBeg = 0x0400000000ull;
static const uptr kShadowEnd = 0x1000000000ull;
static const uptr kMetaShadowBeg = 0x3100000000ull;
static const uptr kMetaShadowEnd = 0x3400000000ull;
static const uptr kMidAppMemBeg = 0x5500000000ull;
static const uptr kMidAppMemEnd = 0x5600000000ull;
static const uptr kHeapMemBeg = 0x7c00000000ull;
static const uptr kHeapMemEnd = 0x7d00000000ull;
static const uptr kHiAppMemBeg = 0x7e00000000ull;
static const uptr kHiAppMemEnd = 0x7fffffffffull;
static const uptr kShadowMsk = 0x7800000000ull;
static const uptr kShadowXor = 0x0200000000ull;
static const uptr kShadowAdd = 0x0000000000ull;
static const uptr kVdsoBeg = 0x7f00000000ull;
};
/*
C/C++ on linux/aarch64 (42-bit VMA)
00000 0010 00 - 01000 0000 00: main binary
01000 0000 00 - 08000 0000 00: -
08000 0000 00 - 10000 0000 00: shadow memory
10000 0000 00 - 26000 0000 00: -
26000 0000 00 - 28000 0000 00: metainfo
28000 0000 00 - 2aa00 0000 00: -
2aa00 0000 00 - 2ab00 0000 00: main binary (PIE)
2ab00 0000 00 - 3e000 0000 00: -
3e000 0000 00 - 3f000 0000 00: heap
3f000 0000 00 - 3ffff ffff ff: modules and main thread stack
*/
struct MappingAarch64_42 {
static const uptr kBroken = kBrokenReverseMapping;
static const uptr kLoAppMemBeg = 0x00000001000ull;
static const uptr kLoAppMemEnd = 0x01000000000ull;
static const uptr kShadowBeg = 0x08000000000ull;
static const uptr kShadowEnd = 0x10000000000ull;
static const uptr kMetaShadowBeg = 0x26000000000ull;
static const uptr kMetaShadowEnd = 0x28000000000ull;
static const uptr kMidAppMemBeg = 0x2aa00000000ull;
static const uptr kMidAppMemEnd = 0x2ab00000000ull;
static const uptr kHeapMemBeg = 0x3e000000000ull;
static const uptr kHeapMemEnd = 0x3f000000000ull;
static const uptr kHiAppMemBeg = 0x3f000000000ull;
static const uptr kHiAppMemEnd = 0x3ffffffffffull;
static const uptr kShadowMsk = 0x3c000000000ull;
static const uptr kShadowXor = 0x04000000000ull;
static const uptr kShadowAdd = 0x00000000000ull;
static const uptr kVdsoBeg = 0x37f00000000ull;
};
struct MappingAarch64_48 {
static const uptr kLoAppMemBeg = 0x0000000001000ull;
static const uptr kLoAppMemEnd = 0x0000200000000ull;
static const uptr kShadowBeg = 0x0001000000000ull;
static const uptr kShadowEnd = 0x0002000000000ull;
static const uptr kMetaShadowBeg = 0x0005000000000ull;
static const uptr kMetaShadowEnd = 0x0006000000000ull;
static const uptr kMidAppMemBeg = 0x0aaaa00000000ull;
static const uptr kMidAppMemEnd = 0x0aaaf00000000ull;
static const uptr kHeapMemBeg = 0x0ffff00000000ull;
static const uptr kHeapMemEnd = 0x0ffff00000000ull;
static const uptr kHiAppMemBeg = 0x0ffff00000000ull;
static const uptr kHiAppMemEnd = 0x1000000000000ull;
static const uptr kShadowMsk = 0x0fff800000000ull;
static const uptr kShadowXor = 0x0000800000000ull;
static const uptr kShadowAdd = 0x0000000000000ull;
static const uptr kVdsoBeg = 0xffff000000000ull;
};
/*
C/C++ on linux/powerpc64 (44-bit VMA)
0000 0000 0100 - 0001 0000 0000: main binary
0001 0000 0000 - 0001 0000 0000: -
0001 0000 0000 - 0b00 0000 0000: shadow
0b00 0000 0000 - 0b00 0000 0000: -
0b00 0000 0000 - 0d00 0000 0000: metainfo (memory blocks and sync objects)
0d00 0000 0000 - 0f00 0000 0000: -
0f00 0000 0000 - 0f50 0000 0000: heap
0f50 0000 0000 - 0f60 0000 0000: -
0f60 0000 0000 - 1000 0000 0000: modules and main thread stack
*/
struct MappingPPC64_44 {
static const uptr kBroken =
kBrokenMapping | kBrokenReverseMapping | kBrokenLinearity;
static const uptr kMetaShadowBeg = 0x0b0000000000ull;
static const uptr kMetaShadowEnd = 0x0d0000000000ull;
static const uptr kShadowBeg = 0x000100000000ull;
static const uptr kShadowEnd = 0x0b0000000000ull;
static const uptr kLoAppMemBeg = 0x000000000100ull;
static const uptr kLoAppMemEnd = 0x000100000000ull;
static const uptr kHeapMemBeg = 0x0f0000000000ull;
static const uptr kHeapMemEnd = 0x0f5000000000ull;
static const uptr kHiAppMemBeg = 0x0f6000000000ull;
static const uptr kHiAppMemEnd = 0x100000000000ull; // 44 bits
static const uptr kShadowMsk = 0x0f0000000000ull;
static const uptr kShadowXor = 0x002100000000ull;
static const uptr kShadowAdd = 0x000000000000ull;
static const uptr kVdsoBeg = 0x3c0000000000000ull;
static const uptr kMidAppMemBeg = 0;
static const uptr kMidAppMemEnd = 0;
};
/*
C/C++ on linux/powerpc64 (46-bit VMA)
0000 0000 1000 - 0100 0000 0000: main binary
0100 0000 0000 - 0200 0000 0000: -
0100 0000 0000 - 0800 0000 0000: shadow
0800 0000 0000 - 1000 0000 0000: -
1000 0000 0000 - 1200 0000 0000: metainfo (memory blocks and sync objects)
1200 0000 0000 - 3d00 0000 0000: -
3d00 0000 0000 - 3e00 0000 0000: heap
3e00 0000 0000 - 3e80 0000 0000: -
3e80 0000 0000 - 4000 0000 0000: modules and main thread stack
*/
struct MappingPPC64_46 {
static const uptr kMetaShadowBeg = 0x100000000000ull;
static const uptr kMetaShadowEnd = 0x120000000000ull;
static const uptr kShadowBeg = 0x010000000000ull;
static const uptr kShadowEnd = 0x080000000000ull;
static const uptr kHeapMemBeg = 0x3d0000000000ull;
static const uptr kHeapMemEnd = 0x3e0000000000ull;
static const uptr kLoAppMemBeg = 0x000000001000ull;
static const uptr kLoAppMemEnd = 0x010000000000ull;
static const uptr kHiAppMemBeg = 0x3e8000000000ull;
static const uptr kHiAppMemEnd = 0x400000000000ull; // 46 bits
static const uptr kShadowMsk = 0x3c0000000000ull;
static const uptr kShadowXor = 0x020000000000ull;
static const uptr kShadowAdd = 0x000000000000ull;
static const uptr kVdsoBeg = 0x7800000000000000ull;
static const uptr kMidAppMemBeg = 0;
static const uptr kMidAppMemEnd = 0;
};
/*
C/C++ on linux/powerpc64 (47-bit VMA)
0000 0000 1000 - 0100 0000 0000: main binary
0100 0000 0000 - 0200 0000 0000: -
0100 0000 0000 - 0800 0000 0000: shadow
0800 0000 0000 - 1000 0000 0000: -
1000 0000 0000 - 1200 0000 0000: metainfo (memory blocks and sync objects)
1200 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
*/
struct MappingPPC64_47 {
static const uptr kMetaShadowBeg = 0x100000000000ull;
static const uptr kMetaShadowEnd = 0x120000000000ull;
static const uptr kShadowBeg = 0x010000000000ull;
static const uptr kShadowEnd = 0x080000000000ull;
static const uptr kHeapMemBeg = 0x7d0000000000ull;
static const uptr kHeapMemEnd = 0x7e0000000000ull;
static const uptr kLoAppMemBeg = 0x000000001000ull;
static const uptr kLoAppMemEnd = 0x010000000000ull;
static const uptr kHiAppMemBeg = 0x7e8000000000ull;
static const uptr kHiAppMemEnd = 0x800000000000ull; // 47 bits
static const uptr kShadowMsk = 0x7c0000000000ull;
static const uptr kShadowXor = 0x020000000000ull;
static const uptr kShadowAdd = 0x000000000000ull;
static const uptr kVdsoBeg = 0x7800000000000000ull;
static const uptr kMidAppMemBeg = 0;
static const uptr kMidAppMemEnd = 0;
};
/*
C/C++ on linux/s390x
While the kernel provides a 64-bit address space, we have to restrict ourselves
to 48 bits due to how e.g. SyncVar::GetId() works.
0000 0000 1000 - 0e00 0000 0000: binary, modules, stacks - 14 TiB
0e00 0000 0000 - 2000 0000 0000: -
2000 0000 0000 - 4000 0000 0000: shadow - 32TiB (2 * app)
4000 0000 0000 - 9000 0000 0000: -
9000 0000 0000 - 9800 0000 0000: metainfo - 8TiB (0.5 * app)
9800 0000 0000 - be00 0000 0000: -
be00 0000 0000 - c000 0000 0000: heap - 2TiB (max supported by the allocator)
*/
struct MappingS390x {
static const uptr kMetaShadowBeg = 0x900000000000ull;
static const uptr kMetaShadowEnd = 0x980000000000ull;
static const uptr kShadowBeg = 0x200000000000ull;
static const uptr kShadowEnd = 0x400000000000ull;
static const uptr kHeapMemBeg = 0xbe0000000000ull;
static const uptr kHeapMemEnd = 0xc00000000000ull;
static const uptr kLoAppMemBeg = 0x000000001000ull;
static const uptr kLoAppMemEnd = 0x0e0000000000ull;
static const uptr kHiAppMemBeg = 0xc00000004000ull;
static const uptr kHiAppMemEnd = 0xc00000004000ull;
static const uptr kShadowMsk = 0xb00000000000ull;
static const uptr kShadowXor = 0x100000000000ull;
static const uptr kShadowAdd = 0x000000000000ull;
static const uptr kVdsoBeg = 0xfffffffff000ull;
static const uptr kMidAppMemBeg = 0;
static const uptr kMidAppMemEnd = 0;
};
/* Go on linux, darwin and freebsd on x86_64
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 - 21c0 0000 0000: shadow
21c0 0000 0000 - 3000 0000 0000: -
3000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects)
4000 0000 0000 - 8000 0000 0000: -
*/
struct MappingGo48 {
static const uptr kMetaShadowBeg = 0x300000000000ull;
static const uptr kMetaShadowEnd = 0x400000000000ull;
static const uptr kShadowBeg = 0x200000000000ull;
static const uptr kShadowEnd = 0x21c000000000ull;
static const uptr kLoAppMemBeg = 0x000000001000ull;
static const uptr kLoAppMemEnd = 0x00e000000000ull;
static const uptr kMidAppMemBeg = 0;
static const uptr kMidAppMemEnd = 0;
static const uptr kHiAppMemBeg = 0;
static const uptr kHiAppMemEnd = 0;
static const uptr kHeapMemBeg = 0;
static const uptr kHeapMemEnd = 0;
static const uptr kVdsoBeg = 0;
static const uptr kShadowMsk = 0;
static const uptr kShadowXor = 0;
static const uptr kShadowAdd = 0x200000000000ull;
};
/* 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 - 0300 0000 0000: shadow
0300 0000 0000 - 0700 0000 0000: -
0700 0000 0000 - 0770 0000 0000: metainfo (memory blocks and sync objects)
07d0 0000 0000 - 8000 0000 0000: -
PIE binaries currently not supported, but it should be theoretically possible.
*/
struct MappingGoWindows {
static const uptr kMetaShadowBeg = 0x070000000000ull;
static const uptr kMetaShadowEnd = 0x077000000000ull;
static const uptr kShadowBeg = 0x010000000000ull;
static const uptr kShadowEnd = 0x030000000000ull;
static const uptr kLoAppMemBeg = 0x000000001000ull;
static const uptr kLoAppMemEnd = 0x00e000000000ull;
static const uptr kMidAppMemBeg = 0;
static const uptr kMidAppMemEnd = 0;
static const uptr kHiAppMemBeg = 0;
static const uptr kHiAppMemEnd = 0;
static const uptr kHeapMemBeg = 0;
static const uptr kHeapMemEnd = 0;
static const uptr kVdsoBeg = 0;
static const uptr kShadowMsk = 0;
static const uptr kShadowXor = 0;
static const uptr kShadowAdd = 0x010000000000ull;
};
/* Go on linux/powerpc64 (46-bit VMA)
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 - 21c0 0000 0000: shadow
21c0 0000 0000 - 2400 0000 0000: -
2400 0000 0000 - 2470 0000 0000: metainfo (memory blocks and sync objects)
2470 0000 0000 - 4000 0000 0000: -
*/
struct MappingGoPPC64_46 {
static const uptr kMetaShadowBeg = 0x240000000000ull;
static const uptr kMetaShadowEnd = 0x247000000000ull;
static const uptr kShadowBeg = 0x200000000000ull;
static const uptr kShadowEnd = 0x21c000000000ull;
static const uptr kLoAppMemBeg = 0x000000001000ull;
static const uptr kLoAppMemEnd = 0x00e000000000ull;
static const uptr kMidAppMemBeg = 0;
static const uptr kMidAppMemEnd = 0;
static const uptr kHiAppMemBeg = 0;
static const uptr kHiAppMemEnd = 0;
static const uptr kHeapMemBeg = 0;
static const uptr kHeapMemEnd = 0;
static const uptr kVdsoBeg = 0;
static const uptr kShadowMsk = 0;
static const uptr kShadowXor = 0;
static const uptr kShadowAdd = 0x200000000000ull;
};
/* Go on linux/powerpc64 (47-bit VMA)
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 - 2800 0000 0000: shadow
2800 0000 0000 - 3000 0000 0000: -
3000 0000 0000 - 3200 0000 0000: metainfo (memory blocks and sync objects)
3200 0000 0000 - 8000 0000 0000: -
*/
struct MappingGoPPC64_47 {
static const uptr kMetaShadowBeg = 0x300000000000ull;
static const uptr kMetaShadowEnd = 0x320000000000ull;
static const uptr kShadowBeg = 0x200000000000ull;
static const uptr kShadowEnd = 0x280000000000ull;
static const uptr kLoAppMemBeg = 0x000000001000ull;
static const uptr kLoAppMemEnd = 0x00e000000000ull;
static const uptr kMidAppMemBeg = 0;
static const uptr kMidAppMemEnd = 0;
static const uptr kHiAppMemBeg = 0;
static const uptr kHiAppMemEnd = 0;
static const uptr kHeapMemBeg = 0;
static const uptr kHeapMemEnd = 0;
static const uptr kVdsoBeg = 0;
static const uptr kShadowMsk = 0;
static const uptr kShadowXor = 0;
static const uptr kShadowAdd = 0x200000000000ull;
};
/* Go on linux/aarch64 (48-bit VMA) and darwin/aarch64 (47-bit VMA)
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 - 2800 0000 0000: shadow
2800 0000 0000 - 3000 0000 0000: -
3000 0000 0000 - 3200 0000 0000: metainfo (memory blocks and sync objects)
3200 0000 0000 - 8000 0000 0000: -
*/
struct MappingGoAarch64 {
static const uptr kMetaShadowBeg = 0x300000000000ull;
static const uptr kMetaShadowEnd = 0x320000000000ull;
static const uptr kShadowBeg = 0x200000000000ull;
static const uptr kShadowEnd = 0x280000000000ull;
static const uptr kLoAppMemBeg = 0x000000001000ull;
static const uptr kLoAppMemEnd = 0x00e000000000ull;
static const uptr kMidAppMemBeg = 0;
static const uptr kMidAppMemEnd = 0;
static const uptr kHiAppMemBeg = 0;
static const uptr kHiAppMemEnd = 0;
static const uptr kHeapMemBeg = 0;
static const uptr kHeapMemEnd = 0;
static const uptr kVdsoBeg = 0;
static const uptr kShadowMsk = 0;
static const uptr kShadowXor = 0;
static const uptr kShadowAdd = 0x200000000000ull;
};
/*
Go on linux/mips64 (47-bit VMA)
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 - 2800 0000 0000: shadow
2800 0000 0000 - 3000 0000 0000: -
3000 0000 0000 - 3200 0000 0000: metainfo (memory blocks and sync objects)
3200 0000 0000 - 8000 0000 0000: -
*/
struct MappingGoMips64_47 {
static const uptr kMetaShadowBeg = 0x300000000000ull;
static const uptr kMetaShadowEnd = 0x320000000000ull;
static const uptr kShadowBeg = 0x200000000000ull;
static const uptr kShadowEnd = 0x280000000000ull;
static const uptr kLoAppMemBeg = 0x000000001000ull;
static const uptr kLoAppMemEnd = 0x00e000000000ull;
static const uptr kMidAppMemBeg = 0;
static const uptr kMidAppMemEnd = 0;
static const uptr kHiAppMemBeg = 0;
static const uptr kHiAppMemEnd = 0;
static const uptr kHeapMemBeg = 0;
static const uptr kHeapMemEnd = 0;
static const uptr kVdsoBeg = 0;
static const uptr kShadowMsk = 0;
static const uptr kShadowXor = 0;
static const uptr kShadowAdd = 0x200000000000ull;
};
/*
Go on linux/s390x
0000 0000 1000 - 1000 0000 0000: executable and heap - 16 TiB
1000 0000 0000 - 4000 0000 0000: -
4000 0000 0000 - 6000 0000 0000: shadow - 64TiB (4 * app)
6000 0000 0000 - 9000 0000 0000: -
9000 0000 0000 - 9800 0000 0000: metainfo - 8TiB (0.5 * app)
*/
struct MappingGoS390x {
static const uptr kMetaShadowBeg = 0x900000000000ull;
static const uptr kMetaShadowEnd = 0x980000000000ull;
static const uptr kShadowBeg = 0x400000000000ull;
static const uptr kShadowEnd = 0x600000000000ull;
static const uptr kLoAppMemBeg = 0x000000001000ull;
static const uptr kLoAppMemEnd = 0x100000000000ull;
static const uptr kMidAppMemBeg = 0;
static const uptr kMidAppMemEnd = 0;
static const uptr kHiAppMemBeg = 0;
static const uptr kHiAppMemEnd = 0;
static const uptr kHeapMemBeg = 0;
static const uptr kHeapMemEnd = 0;
static const uptr kVdsoBeg = 0;
static const uptr kShadowMsk = 0;
static const uptr kShadowXor = 0;
static const uptr kShadowAdd = 0x400000000000ull;
};
extern uptr vmaSize;
template <typename Func, typename Arg>
ALWAYS_INLINE auto SelectMapping(Arg arg) {
#if SANITIZER_GO
# if defined(__powerpc64__)
switch (vmaSize) {
case 46:
return Func::template Apply<MappingGoPPC64_46>(arg);
case 47:
return Func::template Apply<MappingGoPPC64_47>(arg);
}
# elif defined(__mips64)
return Func::template Apply<MappingGoMips64_47>(arg);
# elif defined(__s390x__)
return Func::template Apply<MappingGoS390x>(arg);
# elif defined(__aarch64__)
return Func::template Apply<MappingGoAarch64>(arg);
# elif SANITIZER_WINDOWS
return Func::template Apply<MappingGoWindows>(arg);
# else
return Func::template Apply<MappingGo48>(arg);
# endif
#else // SANITIZER_GO
# if SANITIZER_IOS && !SANITIZER_IOSSIM
return Func::template Apply<MappingAppleAarch64>(arg);
# elif defined(__x86_64__) || SANITIZER_APPLE
return Func::template Apply<Mapping48AddressSpace>(arg);
# elif defined(__aarch64__)
switch (vmaSize) {
case 39:
return Func::template Apply<MappingAarch64_39>(arg);
case 42:
return Func::template Apply<MappingAarch64_42>(arg);
case 48:
return Func::template Apply<MappingAarch64_48>(arg);
}
# elif defined(__powerpc64__)
switch (vmaSize) {
case 44:
return Func::template Apply<MappingPPC64_44>(arg);
case 46:
return Func::template Apply<MappingPPC64_46>(arg);
case 47:
return Func::template Apply<MappingPPC64_47>(arg);
}
# elif defined(__mips64)
return Func::template Apply<MappingMips64_40>(arg);
# elif defined(__s390x__)
return Func::template Apply<MappingS390x>(arg);
# else
# error "unsupported platform"
# endif
#endif
Die();
}
template <typename Func>
void ForEachMapping() {
Func::template Apply<Mapping48AddressSpace>();
Func::template Apply<MappingMips64_40>();
Func::template Apply<MappingAppleAarch64>();
Func::template Apply<MappingAarch64_39>();
Func::template Apply<MappingAarch64_42>();
Func::template Apply<MappingAarch64_48>();
Func::template Apply<MappingPPC64_44>();
Func::template Apply<MappingPPC64_46>();
Func::template Apply<MappingPPC64_47>();
Func::template Apply<MappingS390x>();
Func::template Apply<MappingGo48>();
Func::template Apply<MappingGoWindows>();
Func::template Apply<MappingGoPPC64_46>();
Func::template Apply<MappingGoPPC64_47>();
Func::template Apply<MappingGoAarch64>();
Func::template Apply<MappingGoMips64_47>();
Func::template Apply<MappingGoS390x>();
}
enum MappingType {
kLoAppMemBeg,
kLoAppMemEnd,
kHiAppMemBeg,
kHiAppMemEnd,
kMidAppMemBeg,
kMidAppMemEnd,
kHeapMemBeg,
kHeapMemEnd,
kShadowBeg,
kShadowEnd,
kMetaShadowBeg,
kMetaShadowEnd,
kVdsoBeg,
};
struct MappingField {
template <typename Mapping>
static uptr Apply(MappingType type) {
switch (type) {
case kLoAppMemBeg:
return Mapping::kLoAppMemBeg;
case kLoAppMemEnd:
return Mapping::kLoAppMemEnd;
case kMidAppMemBeg:
return Mapping::kMidAppMemBeg;
case kMidAppMemEnd:
return Mapping::kMidAppMemEnd;
case kHiAppMemBeg:
return Mapping::kHiAppMemBeg;
case kHiAppMemEnd:
return Mapping::kHiAppMemEnd;
case kHeapMemBeg:
return Mapping::kHeapMemBeg;
case kHeapMemEnd:
return Mapping::kHeapMemEnd;
case kVdsoBeg:
return Mapping::kVdsoBeg;
case kShadowBeg:
return Mapping::kShadowBeg;
case kShadowEnd:
return Mapping::kShadowEnd;
case kMetaShadowBeg:
return Mapping::kMetaShadowBeg;
case kMetaShadowEnd:
return Mapping::kMetaShadowEnd;
}
Die();
}
};
ALWAYS_INLINE
uptr LoAppMemBeg(void) { return SelectMapping<MappingField>(kLoAppMemBeg); }
ALWAYS_INLINE
uptr LoAppMemEnd(void) { return SelectMapping<MappingField>(kLoAppMemEnd); }
ALWAYS_INLINE
uptr MidAppMemBeg(void) { return SelectMapping<MappingField>(kMidAppMemBeg); }
ALWAYS_INLINE
uptr MidAppMemEnd(void) { return SelectMapping<MappingField>(kMidAppMemEnd); }
ALWAYS_INLINE
uptr HeapMemBeg(void) { return SelectMapping<MappingField>(kHeapMemBeg); }
ALWAYS_INLINE
uptr HeapMemEnd(void) { return SelectMapping<MappingField>(kHeapMemEnd); }
ALWAYS_INLINE
uptr HiAppMemBeg(void) { return SelectMapping<MappingField>(kHiAppMemBeg); }
ALWAYS_INLINE
uptr HiAppMemEnd(void) { return SelectMapping<MappingField>(kHiAppMemEnd); }
ALWAYS_INLINE
uptr VdsoBeg(void) { return SelectMapping<MappingField>(kVdsoBeg); }
ALWAYS_INLINE
uptr ShadowBeg(void) { return SelectMapping<MappingField>(kShadowBeg); }
ALWAYS_INLINE
uptr ShadowEnd(void) { return SelectMapping<MappingField>(kShadowEnd); }
ALWAYS_INLINE
uptr MetaShadowBeg(void) { return SelectMapping<MappingField>(kMetaShadowBeg); }
ALWAYS_INLINE
uptr MetaShadowEnd(void) { return SelectMapping<MappingField>(kMetaShadowEnd); }
struct IsAppMemImpl {
template <typename Mapping>
static bool Apply(uptr mem) {
return (mem >= Mapping::kHeapMemBeg && mem < Mapping::kHeapMemEnd) ||
(mem >= Mapping::kMidAppMemBeg && mem < Mapping::kMidAppMemEnd) ||
(mem >= Mapping::kLoAppMemBeg && mem < Mapping::kLoAppMemEnd) ||
(mem >= Mapping::kHiAppMemBeg && mem < Mapping::kHiAppMemEnd);
}
};
ALWAYS_INLINE
bool IsAppMem(uptr mem) { return SelectMapping<IsAppMemImpl>(mem); }
struct IsShadowMemImpl {
template <typename Mapping>
static bool Apply(uptr mem) {
return mem >= Mapping::kShadowBeg && mem <= Mapping::kShadowEnd;
}
};
ALWAYS_INLINE
bool IsShadowMem(RawShadow *p) {
return SelectMapping<IsShadowMemImpl>(reinterpret_cast<uptr>(p));
}
struct IsMetaMemImpl {
template <typename Mapping>
static bool Apply(uptr mem) {
return mem >= Mapping::kMetaShadowBeg && mem <= Mapping::kMetaShadowEnd;
}
};
ALWAYS_INLINE
bool IsMetaMem(const u32 *p) {
return SelectMapping<IsMetaMemImpl>(reinterpret_cast<uptr>(p));
}
struct MemToShadowImpl {
template <typename Mapping>
static uptr Apply(uptr x) {
DCHECK(IsAppMemImpl::Apply<Mapping>(x));
return (((x) & ~(Mapping::kShadowMsk | (kShadowCell - 1))) ^
Mapping::kShadowXor) *
kShadowMultiplier +
Mapping::kShadowAdd;
}
};
ALWAYS_INLINE
RawShadow *MemToShadow(uptr x) {
return reinterpret_cast<RawShadow *>(SelectMapping<MemToShadowImpl>(x));
}
struct MemToMetaImpl {
template <typename Mapping>
static u32 *Apply(uptr x) {
DCHECK(IsAppMemImpl::Apply<Mapping>(x));
return (u32 *)(((((x) & ~(Mapping::kShadowMsk | (kMetaShadowCell - 1)))) /
kMetaShadowCell * kMetaShadowSize) |
Mapping::kMetaShadowBeg);
}
};
ALWAYS_INLINE
u32 *MemToMeta(uptr x) { return SelectMapping<MemToMetaImpl>(x); }
struct ShadowToMemImpl {
template <typename Mapping>
static uptr Apply(uptr sp) {
if (!IsShadowMemImpl::Apply<Mapping>(sp))
return 0;
// The shadow mapping is non-linear and we've lost some bits, so we don't
// have an easy way to restore the original app address. But the mapping is
// a bijection, so we try to restore the address as belonging to
// low/mid/high range consecutively and see if shadow->app->shadow mapping
// gives us the same address.
uptr p =
((sp - Mapping::kShadowAdd) / kShadowMultiplier) ^ Mapping::kShadowXor;
if (p >= Mapping::kLoAppMemBeg && p < Mapping::kLoAppMemEnd &&
MemToShadowImpl::Apply<Mapping>(p) == sp)
return p;
if (Mapping::kMidAppMemBeg) {
uptr p_mid = p + (Mapping::kMidAppMemBeg & Mapping::kShadowMsk);
if (p_mid >= Mapping::kMidAppMemBeg && p_mid < Mapping::kMidAppMemEnd &&
MemToShadowImpl::Apply<Mapping>(p_mid) == sp)
return p_mid;
}
return p | Mapping::kShadowMsk;
}
};
ALWAYS_INLINE
uptr ShadowToMem(RawShadow *s) {
return SelectMapping<ShadowToMemImpl>(reinterpret_cast<uptr>(s));
}
// Compresses addr to kCompressedAddrBits stored in least significant bits.
ALWAYS_INLINE uptr CompressAddr(uptr addr) {
return addr & ((1ull << kCompressedAddrBits) - 1);
}
struct RestoreAddrImpl {
typedef uptr Result;
template <typename Mapping>
static Result Apply(uptr addr) {
// To restore the address we go over all app memory ranges and check if top
// 3 bits of the compressed addr match that of the app range. If yes, we
// assume that the compressed address come from that range and restore the
// missing top bits to match the app range address.
const uptr ranges[] = {
Mapping::kLoAppMemBeg, Mapping::kLoAppMemEnd, Mapping::kMidAppMemBeg,
Mapping::kMidAppMemEnd, Mapping::kHiAppMemBeg, Mapping::kHiAppMemEnd,
Mapping::kHeapMemBeg, Mapping::kHeapMemEnd,
};
const uptr indicator = 0x0e0000000000ull;
const uptr ind_lsb = 1ull << LeastSignificantSetBitIndex(indicator);
for (uptr i = 0; i < ARRAY_SIZE(ranges); i += 2) {
uptr beg = ranges[i];
uptr end = ranges[i + 1];
if (beg == end)
continue;
for (uptr p = beg; p < end; p = RoundDown(p + ind_lsb, ind_lsb)) {
if ((addr & indicator) == (p & indicator))
return addr | (p & ~(ind_lsb - 1));
}
}
Printf("ThreadSanitizer: failed to restore address 0x%zx\n", addr);
Die();
}
};
// Restores compressed addr from kCompressedAddrBits to full representation.
// This is called only during reporting and is not performance-critical.
inline uptr RestoreAddr(uptr addr) {
return SelectMapping<RestoreAddrImpl>(addr);
}
void InitializePlatform();
void InitializePlatformEarly();
void CheckAndProtect();
void InitializeShadowMemoryPlatform();
void WriteMemoryProfile(char *buf, uptr buf_size, u64 uptime_ns);
int ExtractResolvFDs(void *state, int *fds, int nfd);
int ExtractRecvmsgFDs(void *msg, int *fds, int nfd);
uptr ExtractLongJmpSp(uptr *env);
void ImitateTlsWrite(ThreadState *thr, uptr tls_addr, uptr tls_size);
int call_pthread_cancel_with_cleanup(int (*fn)(void *arg),
void (*cleanup)(void *arg), void *arg);
void DestroyThreadState();
void PlatformCleanUpThreadState(ThreadState *thr);
} // namespace __tsan
#endif // TSAN_PLATFORM_H