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[asan] Enable ASan on PowerPC. 

Patch by Peter Bergner.

llvm-svn: 209879
This commit is contained in:
Evgeniy Stepanov 2014-05-30 08:52:03 +00:00
parent 2a07bf4ef7
commit dd7cb28572
4 changed files with 20 additions and 4 deletions
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7
compiler-rt/lib/asan/asan_linux.cc
View File

@ -188,6 +188,13 @@ void GetPcSpBp(void *context, uptr *pc, uptr *sp, uptr *bp) {
*bp = ucontext->uc_mcontext.gregs[REG_EBP];
*sp = ucontext->uc_mcontext.gregs[REG_ESP];
# endif
#elif defined(__powerpc__) || defined(__powerpc64__)
ucontext_t *ucontext = (ucontext_t*)context;
*pc = ucontext->uc_mcontext.regs->nip;
*sp = ucontext->uc_mcontext.regs->gpr[PT_R1];
// The powerpc{,64}-linux ABIs do not specify r31 as the frame
// pointer, but GCC always uses r31 when we need a frame pointer.
*bp = ucontext->uc_mcontext.regs->gpr[PT_R31];
#elif defined(__sparc__)
ucontext_t *ucontext = (ucontext_t*)context;
uptr *stk_ptr;

3
compiler-rt/lib/asan/asan_mapping.h
View File

@ -87,6 +87,7 @@ static const u64 kDefaultShadowOffset64 = 1ULL << 44;
static const u64 kDefaultShort64bitShadowOffset = 0x7FFF8000; // < 2G.
static const u64 kAArch64_ShadowOffset64 = 1ULL << 36;
static const u64 kMIPS32_ShadowOffset32 = 0x0aaa8000;
static const u64 kPPC64_ShadowOffset64 = 1ULL << 41;
static const u64 kFreeBSD_ShadowOffset32 = 1ULL << 30; // 0x40000000
static const u64 kFreeBSD_ShadowOffset64 = 1ULL << 46; // 0x400000000000
@ -109,6 +110,8 @@ static const u64 kFreeBSD_ShadowOffset64 = 1ULL << 46; // 0x400000000000
# else
# if defined(__aarch64__)
# define SHADOW_OFFSET kAArch64_ShadowOffset64
# elif defined(__powerpc64__)
# define SHADOW_OFFSET kPPC64_ShadowOffset64
# elif SANITIZER_FREEBSD
# define SHADOW_OFFSET kFreeBSD_ShadowOffset64
# elif SANITIZER_MAC

4
compiler-rt/lib/sanitizer_common/sanitizer_common.h
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@ -28,7 +28,11 @@ struct StackTrace;
const uptr kWordSize = SANITIZER_WORDSIZE / 8;
const uptr kWordSizeInBits = 8 * kWordSize;
#if defined(__powerpc__) || defined(__powerpc64__)
const uptr kCacheLineSize = 128;
#else
const uptr kCacheLineSize = 64;
#endif
const uptr kMaxPathLength = 512;

8
compiler-rt/lib/sanitizer_common/sanitizer_stacktrace.cc
View File

@ -18,11 +18,13 @@
namespace __sanitizer {
uptr StackTrace::GetPreviousInstructionPc(uptr pc) {
#ifdef __arm__
#if defined(__arm__)
// Cancel Thumb bit.
pc = pc & (~1);
#endif
#if defined(__sparc__)
#elif defined(__powerpc__) || defined(__powerpc64__)
// PCs are always 4 byte aligned.
return pc - 4;
#elif defined(__sparc__)
return pc - 8;
#else
return pc - 1;