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[ASan] Move the shadow on Windows 32-bit from 0x20000000 to 0x40000000 

llvm-svn: 225641
This commit is contained in:
Timur Iskhodzhanov 2015-01-12 17:38:58 +00:00
parent e03bef7543
commit 00ede84084
3 changed files with 18 additions and 6 deletions
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18
compiler-rt/lib/asan/asan_mapping.h
View File

@ -79,6 +79,13 @@
// || `[0x48000000, 0x4bffffff]` || ShadowGap ||
// || `[0x40000000, 0x47ffffff]` || LowShadow ||
// || `[0x00000000, 0x3fffffff]` || LowMem ||
//
// Default Windows/i386 mapping:
// || `[0x60000000, 0xffffffff]` || HighMem ||
// || `[0x4c000000, 0x5fffffff]` || HighShadow ||
// || `[0x48000000, 0x4bffffff]` || ShadowGap ||
// || `[0x40000000, 0x47ffffff]` || LowShadow ||
// || `[0x00000000, 0x3fffffff]` || LowMem ||
static const u64 kDefaultShadowScale = 3;
static const u64 kDefaultShadowOffset32 = 1ULL << 29; // 0x20000000
@ -91,6 +98,7 @@ static const u64 kMIPS64_ShadowOffset64 = 1ULL << 36;
static const u64 kPPC64_ShadowOffset64 = 1ULL << 41;
static const u64 kFreeBSD_ShadowOffset32 = 1ULL << 30; // 0x40000000
static const u64 kFreeBSD_ShadowOffset64 = 1ULL << 46; // 0x400000000000
static const u64 kWindowsShadowOffset32 = 1ULL << 30; // 0x40000000
#define SHADOW_SCALE kDefaultShadowScale
#if SANITIZER_ANDROID
@ -101,12 +109,12 @@ static const u64 kFreeBSD_ShadowOffset64 = 1ULL << 46; // 0x400000000000
# define SHADOW_OFFSET kMIPS32_ShadowOffset32
# elif SANITIZER_FREEBSD
# define SHADOW_OFFSET kFreeBSD_ShadowOffset32
# elif SANITIZER_IOS
# define SHADOW_OFFSET kIosShadowOffset32
# elif SANITIZER_WINDOWS
# define SHADOW_OFFSET kWindowsShadowOffset32
# else
# if SANITIZER_IOS
# define SHADOW_OFFSET kIosShadowOffset32
# else
# define SHADOW_OFFSET kDefaultShadowOffset32
# endif
# define SHADOW_OFFSET kDefaultShadowOffset32
# endif
# else
# if defined(__aarch64__)

2
compiler-rt/test/asan/TestCases/Windows/shadow_mapping_failure.cc
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@ -3,7 +3,7 @@
#include <stdio.h>
char bigchunk[1 << 29];
char bigchunk[1 << 30];
int main() {
printf("Hello, world!\n");

4
llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
View File

@ -67,6 +67,7 @@ static const uint64_t kMIPS32_ShadowOffset32 = 0x0aaa0000;
static const uint64_t kMIPS64_ShadowOffset64 = 1ULL << 36;
static const uint64_t kFreeBSD_ShadowOffset32 = 1ULL << 30;
static const uint64_t kFreeBSD_ShadowOffset64 = 1ULL << 46;
static const uint64_t kWindowsShadowOffset32 = 1ULL << 30;
static const size_t kMinStackMallocSize = 1 << 6; // 64B
static const size_t kMaxStackMallocSize = 1 << 16; // 64K
@ -307,6 +308,7 @@ static ShadowMapping getShadowMapping(Triple &TargetTriple, int LongSize) {
TargetTriple.getArch() == llvm::Triple::mipsel;
bool IsMIPS64 = TargetTriple.getArch() == llvm::Triple::mips64 ||
TargetTriple.getArch() == llvm::Triple::mips64el;
bool IsWindows = TargetTriple.isOSWindows();
ShadowMapping Mapping;
@ -319,6 +321,8 @@ static ShadowMapping getShadowMapping(Triple &TargetTriple, int LongSize) {
Mapping.Offset = kFreeBSD_ShadowOffset32;
else if (IsIOS)
Mapping.Offset = kIOSShadowOffset32;
else if (IsWindows)
Mapping.Offset = kWindowsShadowOffset32;
else
Mapping.Offset = kDefaultShadowOffset32;
} else { // LongSize == 64