crashpad/snapshot/win/crashpad_snapshot_test_crashing_child.cc
Joshua Peraza 38b20ca57e Relocate CaptureContext to misc and implement on Linux
Previously, the mac version was  under client/ and win under util/win/.
This cl brings them all together under util/misc/ and combines common
test code.

Bug: crashpad:30
Change-Id: Idf0d0158b969d5aa9802dfc8c21f73041b2bcc6c
Reviewed-on: https://chromium-review.googlesource.com/907755
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
2018-02-09 17:25:45 +00:00

56 lines
1.9 KiB
C++

// Copyright 2015 The Crashpad Authors. All rights reserved.
//
// 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.
#include <intrin.h>
#include <windows.h>
#include "base/logging.h"
#include "build/build_config.h"
#include "client/crashpad_client.h"
#include "util/misc/capture_context.h"
#include "util/win/address_types.h"
int wmain(int argc, wchar_t* argv[]) {
CHECK_EQ(argc, 2);
crashpad::CrashpadClient client;
CHECK(client.SetHandlerIPCPipe(argv[1]));
HANDLE out = GetStdHandle(STD_OUTPUT_HANDLE);
PCHECK(out != INVALID_HANDLE_VALUE) << "GetStdHandle";
CONTEXT context;
crashpad::CaptureContext(&context);
#if defined(ARCH_CPU_64_BITS)
crashpad::WinVMAddress break_address = context.Rip;
#else
crashpad::WinVMAddress break_address = context.Eip;
#endif
// This does not used CheckedWriteFile() because at high optimization
// settings, a lot of logging code can be inlined, causing there to be a large
// number of instructions between where the IP is captured and the actual
// __debugbreak(). Instead call Windows' WriteFile() to minimize the amount of
// code here. Because the next line is going to crash in any case, there's
// minimal difference in behavior aside from an indication of what broke when
// the other end experiences a ReadFile() error.
DWORD bytes_written;
WriteFile(
out, &break_address, sizeof(break_address), &bytes_written, nullptr);
__debugbreak();
return 0;
}