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// 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.
#ifndef CRASHPAD_SNAPSHOT_WIN_EXCEPTION_SNAPSHOT_WIN_H_
#define CRASHPAD_SNAPSHOT_WIN_EXCEPTION_SNAPSHOT_WIN_H_
#include <windows.h>
#include <stdint.h>
#include <memory>
#include <vector>
#include "base/macros.h"
#include "build/build_config.h"
#include "snapshot/cpu_context.h"
#include "snapshot/exception_snapshot.h"
#include "snapshot/win/thread_snapshot_win.h"
#include "util/misc/initialization_state_dcheck.h"
#include "util/win/address_types.h"
#include "util/win/process_structs.h"
namespace crashpad {
class ProcessReaderWin;
namespace internal {
class MemorySnapshotGeneric;
union CPUContextUnion {
#if defined(ARCH_CPU_X86_FAMILY)
CPUContextX86 x86;
CPUContextX86_64 x86_64;
#elif defined(ARCH_CPU_ARM64)
CPUContextARM64 arm64;
#endif
};
class ExceptionSnapshotWin final : public ExceptionSnapshot {
public:
ExceptionSnapshotWin();
~ExceptionSnapshotWin() override;
//! \brief Initializes the object.
//!
//! \param[in] process_reader A ProcessReaderWin for the process that
//! sustained the exception.
//! \param[in] thread_id The thread ID in which the exception occurred.
//! \param[in] exception_pointers The address of an `EXCEPTION_POINTERS`
//! record in the target process, passed through from the exception
//! handler.
//!
//! \note If the exception was triggered by
//! CrashpadClient::DumpAndCrashTargetProcess(), this has the side-effect
//! of correcting the thread suspend counts for \a process_reader.
//!
//! \return `true` if the snapshot could be created, `false` otherwise with
//! an appropriate message logged.
bool Initialize(ProcessReaderWin* process_reader,
DWORD thread_id,
WinVMAddress exception_pointers);
// ExceptionSnapshot:
const CPUContext* Context() const override;
uint64_t ThreadID() const override;
uint32_t Exception() const override;
uint32_t ExceptionInfo() const override;
uint64_t ExceptionAddress() const override;
const std::vector<uint64_t>& Codes() const override;
std::vector<const MemorySnapshot*> ExtraMemory() const override;
private:
template <class ExceptionRecordType,
class ExceptionPointersType,
class ContextType>
bool InitializeFromExceptionPointers(
ProcessReaderWin* process_reader,
WinVMAddress exception_pointers_address,
DWORD exception_thread_id,
void (*native_to_cpu_context)(const ContextType& context_record,
CPUContext* context,
CPUContextUnion* context_union));
CPUContextUnion context_union_;
CPUContext context_;
std::vector<uint64_t> codes_;
std::vector<std::unique_ptr<internal::MemorySnapshotGeneric>> extra_memory_;
uint64_t thread_id_;
uint64_t exception_address_;
uint32_t exception_flags_;
DWORD exception_code_;
InitializationStateDcheck initialized_;
DISALLOW_COPY_AND_ASSIGN(ExceptionSnapshotWin);
};
} // namespace internal
} // namespace crashpad
#endif // CRASHPAD_SNAPSHOT_WIN_EXCEPTION_SNAPSHOT_WIN_H_