| // Copyright 2017 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_LINUX_EXCEPTION_SNAPSHOT_LINUX_H_ |
| #define CRASHPAD_SNAPSHOT_LINUX_EXCEPTION_SNAPSHOT_LINUX_H_ |
| |
| #include <stdint.h> |
| #include <sys/types.h> |
| |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "build/build_config.h" |
| #include "snapshot/cpu_context.h" |
| #include "snapshot/exception_snapshot.h" |
| #include "snapshot/linux/process_reader_linux.h" |
| #include "snapshot/memory_snapshot.h" |
| #include "util/linux/address_types.h" |
| #include "util/misc/initialization_state_dcheck.h" |
| |
| namespace crashpad { |
| namespace internal { |
| |
| //! \brief An ExceptionSnapshot of an signal received by a running (or crashed) |
| //! process on a Linux system. |
| class ExceptionSnapshotLinux final : public ExceptionSnapshot { |
| public: |
| ExceptionSnapshotLinux(); |
| ~ExceptionSnapshotLinux() override; |
| |
| //! \brief Initializes the object. |
| //! |
| //! \param[in] process_reader A ProcessReaderLinux for the process that |
| //! received |
| //! the signal. |
| //! \param[in] siginfo_address The address in the target process' address |
| //! space of the siginfo_t passed to the signal handler. |
| //! \param[in] context_address The address in the target process' address |
| //! space of the ucontext_t passed to the signal handler. |
| //! \param[in] thread_id The thread ID of the thread that received the signal. |
| //! |
| //! \return `true` if the snapshot could be created, `false` otherwise with |
| //! an appropriate message logged. |
| bool Initialize(ProcessReaderLinux* process_reader, |
| LinuxVMAddress siginfo_address, |
| LinuxVMAddress context_address, |
| pid_t thread_id); |
| |
| // 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; |
| virtual std::vector<const MemorySnapshot*> ExtraMemory() const override; |
| |
| private: |
| template <typename Traits> |
| bool ReadSiginfo(ProcessReaderLinux* reader, LinuxVMAddress siginfo_address); |
| |
| template <typename Traits> |
| bool ReadContext(ProcessReaderLinux* reader, LinuxVMAddress context_address); |
| |
| union { |
| #if defined(ARCH_CPU_X86_FAMILY) |
| CPUContextX86 x86; |
| CPUContextX86_64 x86_64; |
| #elif defined(ARCH_CPU_ARM_FAMILY) |
| CPUContextARM arm; |
| CPUContextARM64 arm64; |
| #elif defined(ARCH_CPU_MIPS_FAMILY) |
| CPUContextMIPS mipsel; |
| CPUContextMIPS64 mips64; |
| #endif |
| } context_union_; |
| CPUContext context_; |
| std::vector<uint64_t> codes_; |
| uint64_t thread_id_; |
| uint64_t exception_address_; |
| uint32_t signal_number_; |
| uint32_t signal_code_; |
| InitializationStateDcheck initialized_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ExceptionSnapshotLinux); |
| }; |
| |
| } // namespace internal |
| } // namespace crashpad |
| |
| #endif // CRASHPAD_SNAPSHOT_LINUX_EXCEPTION_SNAPSHOT_LINUX_H_ |