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authorKostya Serebryany <kcc@google.com>2012-11-20 07:00:42 +0000
committerKostya Serebryany <kcc@google.com>2012-11-20 07:00:42 +0000
commitd7d4650dd754aafc874e3b8cd5ab5b38005c84ec (patch)
tree50c7f1ca4725693f6cd29cdb416d1eaa80e7e71c /lib/asan/asan_linux.cc
parent031633bef8dff03f4e8943a12e34856bd66bbc78 (diff)
[asan] more support for powerpc, patch by Peter Bergner
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@168356 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/asan/asan_linux.cc')
-rw-r--r--lib/asan/asan_linux.cc9
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/asan/asan_linux.cc b/lib/asan/asan_linux.cc
index 1f46f268c..740bf5e7c 100644
--- a/lib/asan/asan_linux.cc
+++ b/lib/asan/asan_linux.cc
@@ -68,6 +68,13 @@ void GetPcSpBp(void *context, uptr *pc, uptr *sp, uptr *bp) {
*pc = ucontext->uc_mcontext.gregs[REG_EIP];
*bp = ucontext->uc_mcontext.gregs[REG_EBP];
*sp = ucontext->uc_mcontext.gregs[REG_ESP];
+# 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;
@@ -151,7 +158,7 @@ void GetStackTrace(StackTrace *stack, uptr max_s, uptr pc, uptr bp) {
stack->trace[0] = pc;
if ((max_s) > 1) {
stack->max_size = max_s;
-#ifdef __arm__
+#if defined(__arm__) || defined(__powerpc__) || defined(__powerpc64__)
_Unwind_Backtrace(Unwind_Trace, stack);
#else
if (!asan_inited) return;