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[MSan][LLVM][MIPS] Shadow and Origin offsets for MIPS

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Reviewers: kcc, samsonov, petarj, eugenis

Differential Revision: http://reviews.llvm.org/D6146

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226565 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Mohit K. Bhakkad 2015-01-20 13:05:42 +00:00
parent d624796bc6
commit 68d992759a
1 changed files with 52 additions and 25 deletions
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77
lib/Transforms/Instrumentation/MemorySanitizer.cpp
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@ -209,7 +209,7 @@ struct PlatformMemoryMapParams {
};
// i386 Linux
static const MemoryMapParams LinuxMemoryMapParams32 = {
static const MemoryMapParams Linux_I386_MemoryMapParams = {
0x000080000000, // AndMask
0, // XorMask (not used)
0, // ShadowBase (not used)
@ -217,15 +217,23 @@ static const MemoryMapParams LinuxMemoryMapParams32 = {
};
// x86_64 Linux
static const MemoryMapParams LinuxMemoryMapParams64 = {
static const MemoryMapParams Linux_X86_64_MemoryMapParams = {
0x400000000000, // AndMask
0, // XorMask (not used)
0, // ShadowBase (not used)
0x200000000000, // OriginBase
};
// mips64 Linux
static const MemoryMapParams Linux_MIPS64_MemoryMapParams = {
0x004000000000, // AndMask
0, // XorMask (not used)
0, // ShadowBase (not used)
0x002000000000, // OriginBase
};
// i386 FreeBSD
static const MemoryMapParams FreeBSDMemoryMapParams32 = {
static const MemoryMapParams FreeBSD_I386_MemoryMapParams = {
0x000180000000, // AndMask
0x000040000000, // XorMask
0x000020000000, // ShadowBase
@ -233,21 +241,26 @@ static const MemoryMapParams FreeBSDMemoryMapParams32 = {
};
// x86_64 FreeBSD
static const MemoryMapParams FreeBSDMemoryMapParams64 = {
static const MemoryMapParams FreeBSD_X86_64_MemoryMapParams = {
0xc00000000000, // AndMask
0x200000000000, // XorMask
0x100000000000, // ShadowBase
0x380000000000, // OriginBase
};
static const PlatformMemoryMapParams LinuxMemoryMapParams = {
&LinuxMemoryMapParams32,
&LinuxMemoryMapParams64,
static const PlatformMemoryMapParams Linux_X86_MemoryMapParams = {
&Linux_I386_MemoryMapParams,
&Linux_X86_64_MemoryMapParams,
};
static const PlatformMemoryMapParams FreeBSDMemoryMapParams = {
&FreeBSDMemoryMapParams32,
&FreeBSDMemoryMapParams64,
static const PlatformMemoryMapParams Linux_MIPS_MemoryMapParams = {
NULL,
&Linux_MIPS64_MemoryMapParams,
};
static const PlatformMemoryMapParams FreeBSD_X86_MemoryMapParams = {
&FreeBSD_I386_MemoryMapParams,
&FreeBSD_X86_64_MemoryMapParams,
};
/// \brief An instrumentation pass implementing detection of uninitialized
@ -440,26 +453,40 @@ bool MemorySanitizer::doInitialization(Module &M) {
DL = &DLP->getDataLayout();
Triple TargetTriple(M.getTargetTriple());
const PlatformMemoryMapParams *PlatformMapParams;
if (TargetTriple.getOS() == Triple::FreeBSD)
PlatformMapParams = &FreeBSDMemoryMapParams;
else
PlatformMapParams = &LinuxMemoryMapParams;
C = &(M.getContext());
unsigned PtrSize = DL->getPointerSizeInBits(/* AddressSpace */0);
switch (PtrSize) {
case 64:
MapParams = PlatformMapParams->bits64;
switch (TargetTriple.getOS()) {
case Triple::FreeBSD:
switch (TargetTriple.getArch()) {
case Triple::x86_64:
MapParams = FreeBSD_X86_MemoryMapParams.bits64;
break;
case Triple::x86:
MapParams = FreeBSD_X86_MemoryMapParams.bits32;
break;
default:
report_fatal_error("unsupported architecture");
}
break;
case 32:
MapParams = PlatformMapParams->bits32;
case Triple::Linux:
switch (TargetTriple.getArch()) {
case Triple::x86_64:
MapParams = Linux_X86_MemoryMapParams.bits64;
break;
case Triple::x86:
MapParams = Linux_X86_MemoryMapParams.bits32;
break;
case Triple::mips64:
case Triple::mips64el:
MapParams = Linux_MIPS_MemoryMapParams.bits64;
break;
default:
report_fatal_error("unsupported architecture");
}
break;
default:
report_fatal_error("unsupported pointer size");
break;
report_fatal_error("unsupported operating system");
}
C = &(M.getContext());
IRBuilder<> IRB(*C);
IntptrTy = IRB.getIntPtrTy(DL);
OriginTy = IRB.getInt32Ty();