gecko/toolkit/crashreporter/test/dumputils.cpp
2011-07-07 17:31:11 -07:00

108 lines
2.6 KiB
C++

#include <stdio.h>
#include "google_breakpad/processor/minidump.h"
#include "nscore.h"
using namespace google_breakpad;
// Return true if the specified minidump contains a stream of |stream_type|.
extern "C"
NS_EXPORT bool
DumpHasStream(const char* dump_file, u_int32_t stream_type)
{
Minidump dump(dump_file);
if (!dump.Read())
return false;
u_int32_t length;
if (!dump.SeekToStreamType(stream_type, &length) || length == 0)
return false;
return true;
}
// Return true if the specified minidump contains a memory region
// that contains the instruction pointer from the exception record.
extern "C"
NS_EXPORT bool
DumpHasInstructionPointerMemory(const char* dump_file)
{
Minidump minidump(dump_file);
if (!minidump.Read())
return false;
MinidumpException* exception = minidump.GetException();
MinidumpMemoryList* memory_list = minidump.GetMemoryList();
if (!exception || !memory_list) {
return false;
}
MinidumpContext* context = exception->GetContext();
if (!context)
return false;
u_int64_t instruction_pointer;
switch (context->GetContextCPU()) {
case MD_CONTEXT_X86:
instruction_pointer = context->GetContextX86()->eip;
break;
case MD_CONTEXT_AMD64:
instruction_pointer = context->GetContextAMD64()->rip;
break;
case MD_CONTEXT_ARM:
instruction_pointer = context->GetContextARM()->iregs[15];
break;
default:
return false;
}
MinidumpMemoryRegion* region =
memory_list->GetMemoryRegionForAddress(instruction_pointer);
return region != NULL;
}
// This function tests for a very specific condition. It finds
// an address in a file, "crash-addr", in the CWD. It checks
// that the minidump has a memory region starting at that
// address. The region must be 32 bytes long and contain the
// values 0 to 31 as bytes, in ascending order.
extern "C"
NS_EXPORT bool
DumpCheckMemory(const char* dump_file)
{
Minidump dump(dump_file);
if (!dump.Read())
return false;
MinidumpMemoryList* memory_list = dump.GetMemoryList();
if (!memory_list) {
return false;
}
void *addr;
FILE *fp = fopen("crash-addr", "r");
if (!fp)
return false;
if (fscanf(fp, "%p", &addr) != 1)
return false;
fclose(fp);
remove("crash-addr");
MinidumpMemoryRegion* region =
memory_list->GetMemoryRegionForAddress(u_int64_t(addr));
if(!region)
return false;
const u_int8_t* chars = region->GetMemory();
if (region->GetSize() != 32)
return false;
for (int i=0; i<32; i++) {
if (chars[i] != i)
return false;
}
return true;
}