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[asan] ASan Linux MIPS32 support (llvm part), patch by Jyun-Yan Y

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183104 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kostya Serebryany 2013-06-03 14:46:56 +00:00
parent b8ce45752b
commit 3e1d45bf44
1 changed files with 10 additions and 1 deletions
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11
lib/Transforms/Instrumentation/AddressSanitizer.cpp
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@ -39,6 +39,7 @@
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/system_error.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
@ -55,6 +56,7 @@ static const uint64_t kDefaultShadowOffset32 = 1ULL << 29;
static const uint64_t kDefaultShadowOffset64 = 1ULL << 44;
static const uint64_t kDefaultShort64bitShadowOffset = 0x7FFF8000; // < 2G.
static const uint64_t kPPC64_ShadowOffset64 = 1ULL << 41;
static const uint64_t kMIPS32_ShadowOffset32 = 0x0aaa8000;
static const size_t kMaxStackMallocSize = 1 << 16; // 64K
static const uintptr_t kCurrentStackFrameMagic = 0x41B58AB3;
@ -207,6 +209,8 @@ static ShadowMapping getShadowMapping(const Module &M, int LongSize,
bool IsMacOSX = TargetTriple.getOS() == llvm::Triple::MacOSX;
bool IsPPC64 = TargetTriple.getArch() == llvm::Triple::ppc64;
bool IsX86_64 = TargetTriple.getArch() == llvm::Triple::x86_64;
bool IsMIPS32 = TargetTriple.getArch() == llvm::Triple::mips ||
TargetTriple.getArch() == llvm::Triple::mipsel;
ShadowMapping Mapping;
@ -216,7 +220,8 @@ static ShadowMapping getShadowMapping(const Module &M, int LongSize,
Mapping.OrShadowOffset = !IsPPC64 && !ClShort64BitOffset;
Mapping.Offset = (IsAndroid || ZeroBaseShadow) ? 0 :
(LongSize == 32 ? kDefaultShadowOffset32 :
(LongSize == 32 ?
(IsMIPS32 ? kMIPS32_ShadowOffset32 : kDefaultShadowOffset32) :
IsPPC64 ? kPPC64_ShadowOffset64 : kDefaultShadowOffset64);
if (!ZeroBaseShadow && ClShort64BitOffset && IsX86_64 && !IsMacOSX) {
assert(LongSize == 64);
@ -1269,6 +1274,10 @@ void FunctionStackPoisoner::poisonRedZones(
RedzoneSize(),
1ULL << Mapping.Scale,
kAsanStackPartialRedzoneMagic);
Poison =
ASan.TD->isLittleEndian()
? support::endian::byte_swap<uint32_t, support::little>(Poison)
: support::endian::byte_swap<uint32_t, support::big>(Poison);
}
Value *PartialPoison = ConstantInt::get(RZTy, Poison);
IRB.CreateStore(PartialPoison, IRB.CreateIntToPtr(Ptr, RZPtrTy));