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[asan] Disable asm instrumentation on unsupported platforms.

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Only emit calls to compiler-rt asm routines on platforms where they are
present (currently limited to linux i386/x86_64).

Patch by Yuri Gorshenin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207651 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evgeniy Stepanov 2014-04-30 14:04:31 +00:00
parent ee053f4f51
commit 55f8c07504
1 changed files with 6 additions and 3 deletions
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9
lib/Target/X86/AsmParser/X86AsmInstrumentation.cpp
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@ -11,6 +11,7 @@
#include "X86AsmInstrumentation.h" #include "X86AsmInstrumentation.h"
#include "X86Operand.h" #include "X86Operand.h"
#include "llvm/ADT/StringExtras.h" #include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Triple.h"
#include "llvm/IR/Function.h" #include "llvm/IR/Function.h"
#include "llvm/MC/MCContext.h" #include "llvm/MC/MCContext.h"
#include "llvm/MC/MCInst.h" #include "llvm/MC/MCInst.h"
@ -207,9 +208,11 @@ void X86AsmInstrumentation::InstrumentInstruction(
MCContext &Ctx, const MCInstrInfo &MII, MCStreamer &Out) {} MCContext &Ctx, const MCInstrInfo &MII, MCStreamer &Out) {}
X86AsmInstrumentation * X86AsmInstrumentation *
CreateX86AsmInstrumentation(const MCTargetOptions &MCOptions, const MCContext &Ctx, CreateX86AsmInstrumentation(const MCTargetOptions &MCOptions,
const MCSubtargetInfo &STI) { const MCContext &Ctx, const MCSubtargetInfo &STI) {
if (MCOptions.SanitizeAddress) { Triple T(STI.getTargetTriple());
const bool hasCompilerRTSupport = T.isOSLinux();
if (hasCompilerRTSupport && MCOptions.SanitizeAddress) {
if ((STI.getFeatureBits() & X86::Mode32Bit) != 0) if ((STI.getFeatureBits() & X86::Mode32Bit) != 0)
return new X86AddressSanitizer32(STI); return new X86AddressSanitizer32(STI);
if ((STI.getFeatureBits() & X86::Mode64Bit) != 0) if ((STI.getFeatureBits() & X86::Mode64Bit) != 0)