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// Copyright (C) 2006 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// minidump_stackwalk.cc: Print the stack of the exception thread from a
// minidump.
//
// Author: Mark Mentovai
#include <stdlib.h>
#include <stdio.h>
#include <string>
#include "processor/minidump.h"
#include "processor/stackwalker_x86.h"
using std::string;
using namespace google_airbag;
int main(int argc, char** argv) {
if (argc != 2) {
fprintf(stderr, "usage: %s <file>\n", argv[0]);
exit(1);
}
Minidump minidump(argv[1]);
if (!minidump.Read()) {
fprintf(stderr, "minidump.Read() failed\n");
exit(1);
}
MinidumpException* exception = minidump.GetException();
if (!exception) {
fprintf(stderr, "minidump.GetException() failed\n");
exit(1);
}
MinidumpThreadList* thread_list = minidump.GetThreadList();
if (!thread_list) {
fprintf(stderr, "minidump.GetThreadList() failed\n");
exit(1);
}
MinidumpThread* exception_thread =
thread_list->GetThreadByID(exception->GetThreadID());
if (!exception_thread) {
fprintf(stderr, "thread_list->GetThreadByID() failed\n");
exit(1);
}
MemoryRegion* stack_memory = exception_thread->GetMemory();
if (!stack_memory) {
fprintf(stderr, "exception_thread->GetStackMemory() failed\n");
exit(1);
}
MinidumpContext* context = exception->GetContext();
if (!context) {
fprintf(stderr, "exception->GetContext() failed\n");
exit(1);
}
MinidumpModuleList* modules = minidump.GetModuleList();
if (!modules) {
fprintf(stderr, "minidump.GetModuleList() failed\n");
exit(1);
}
StackwalkerX86 stackwalker = StackwalkerX86(context, stack_memory,
modules, NULL);
StackFrames stack;
stackwalker.Walk(&stack);
unsigned int index;
for (index = 0 ; index < stack.size() ; index++) {
StackFrame frame = stack.at(index);
printf("[%2d] ebp = 0x%08llx eip = 0x%08llx \"%s\" + 0x%08llx\n",
index,
frame.frame_pointer,
frame.instruction,
frame.module_base ? frame.module_name.c_str() : "0x0",
frame.instruction - frame.module_base);
}
return 0;
}
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