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Support for .raSearch in the x86 stackwalker

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Patch by Benjamin Smedberg <bsmedberg@gmail.com>


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@927 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
mark@chromium.org 2012-02-23 22:56:53 +00:00
parent 26c31918f7
commit 84a55c5a72
3 changed files with 88 additions and 7 deletions
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15
src/google_breakpad/processor/stackwalker.h
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@ -108,6 +108,15 @@ class Stackwalker {
// Returns false otherwise.
bool InstructionAddressSeemsValid(u_int64_t address);
template<typename InstructionType>
bool ScanForReturnAddress(InstructionType location_start,
InstructionType *location_found,
InstructionType *ip_found) {
const int kRASearchWords = 30;
return ScanForReturnAddress(location_start, location_found, ip_found,
kRASearchWords);
}
// Scan the stack starting at location_start, looking for an address
// that looks like a valid instruction pointer. Addresses must
// 1) be contained in the current stack memory
@ -120,10 +129,10 @@ class Stackwalker {
template<typename InstructionType>
bool ScanForReturnAddress(InstructionType location_start,
InstructionType *location_found,
InstructionType *ip_found) {
const int kRASearchWords = 30;
InstructionType *ip_found,
int searchwords) {
for (InstructionType location = location_start;
location <= location_start + kRASearchWords * sizeof(InstructionType);
location <= location_start + searchwords * sizeof(InstructionType);
location += sizeof(InstructionType)) {
InstructionType ip;
if (!memory_->GetMemoryAtAddress(location, &ip))