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[asan] Add iOS support to AddressSanitzier

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Differential Revision: http://reviews.llvm.org/D15625

llvm-svn: 259586
This commit is contained in:
Anna Zaks 2016-02-02 22:05:07 +00:00
parent c3aef27beb
commit f3c75f69fb
1 changed files with 11 additions and 3 deletions
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14
lib/Transforms/Instrumentation/AddressSanitizer.cpp
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@ -65,8 +65,11 @@ using namespace llvm;
static const uint64_t kDefaultShadowScale = 3;
static const uint64_t kDefaultShadowOffset32 = 1ULL << 29;
static const uint64_t kIOSShadowOffset32 = 1ULL << 30;
static const uint64_t kDefaultShadowOffset64 = 1ULL << 44;
static const uint64_t kIOSShadowOffset32 = 1ULL << 30;
static const uint64_t kIOSShadowOffset64 = 0x120200000;
static const uint64_t kIOSSimShadowOffset32 = 1ULL << 30;
static const uint64_t kIOSSimShadowOffset64 = kDefaultShadowOffset64;
static const uint64_t kSmallX86_64ShadowOffset = 0x7FFF8000; // < 2G.
static const uint64_t kLinuxKasan_ShadowOffset64 = 0xdffffc0000000000;
static const uint64_t kPPC64_ShadowOffset64 = 1ULL << 41;
@ -334,11 +337,12 @@ struct ShadowMapping {
static ShadowMapping getShadowMapping(Triple &TargetTriple, int LongSize,
bool IsKasan) {
bool IsAndroid = TargetTriple.isAndroid();
bool IsIOS = TargetTriple.isiOS();
bool IsIOS = TargetTriple.isiOS() || TargetTriple.isWatchOS();
bool IsFreeBSD = TargetTriple.isOSFreeBSD();
bool IsLinux = TargetTriple.isOSLinux();
bool IsPPC64 = TargetTriple.getArch() == llvm::Triple::ppc64 ||
TargetTriple.getArch() == llvm::Triple::ppc64le;
bool IsX86 = TargetTriple.getArch() == llvm::Triple::x86;
bool IsX86_64 = TargetTriple.getArch() == llvm::Triple::x86_64;
bool IsMIPS32 = TargetTriple.getArch() == llvm::Triple::mips ||
TargetTriple.getArch() == llvm::Triple::mipsel;
@ -359,7 +363,8 @@ static ShadowMapping getShadowMapping(Triple &TargetTriple, int LongSize,
else if (IsFreeBSD)
Mapping.Offset = kFreeBSD_ShadowOffset32;
else if (IsIOS)
Mapping.Offset = kIOSShadowOffset32;
// If we're targeting iOS and x86, the binary is built for iOS simulator.
Mapping.Offset = IsX86 ? kIOSSimShadowOffset32 : kIOSShadowOffset32;
else if (IsWindows)
Mapping.Offset = kWindowsShadowOffset32;
else
@ -376,6 +381,9 @@ static ShadowMapping getShadowMapping(Triple &TargetTriple, int LongSize,
Mapping.Offset = kSmallX86_64ShadowOffset;
} else if (IsMIPS64)
Mapping.Offset = kMIPS64_ShadowOffset64;
else if (IsIOS)
// If we're targeting iOS and x86, the binary is built for iOS simulator.
Mapping.Offset = IsX86_64 ? kIOSSimShadowOffset64 : kIOSShadowOffset64;
else if (IsAArch64)
Mapping.Offset = kAArch64_ShadowOffset64;
else