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17a515d33d
Add Mach exception server and fill out exceptions snapshot. Note that: - The 'capture' portion of this CL will be moved out of the snapshot interface and into a separate in-process dump to disk location. - All of the pointer dereferences need to be wrapped in vm_read. - The read-fast-and-dump logic in exception_snapshot will end up in a different file completely, but until we pick a serialization/deserialization method, keep it as-is. Bug: crashpad:31 Change-Id: I44203aa44036a341d6b4517fde7ab0cb9d7e94d7 Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2160122 Commit-Queue: Justin Cohen <justincohen@chromium.org> Reviewed-by: Mark Mentovai <mark@chromium.org>
93 lines
3.2 KiB
C++
93 lines
3.2 KiB
C++
// Copyright 2020 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef CRASHPAD_SNAPSHOT_IOS_EXCEPTION_SNAPSHOT_IOS_H_
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#define CRASHPAD_SNAPSHOT_IOS_EXCEPTION_SNAPSHOT_IOS_H_
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#include <mach/mach.h>
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#include <stdint.h>
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#include <vector>
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#include "base/macros.h"
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#include "build/build_config.h"
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#include "snapshot/cpu_context.h"
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#include "snapshot/exception_snapshot.h"
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#include "util/mach/mach_extensions.h"
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#include "util/misc/initialization_state_dcheck.h"
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namespace crashpad {
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namespace internal {
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//! \brief An ExceptionSnapshot of an exception sustained by a running (or
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//! crashed) process on an iOS system.
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class ExceptionSnapshotIOS final : public ExceptionSnapshot {
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public:
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ExceptionSnapshotIOS();
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~ExceptionSnapshotIOS() override;
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//! \brief Initializes the object from a signal.
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//!
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//! \return `true` if the snapshot could be created, `false` otherwise with
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//! an appropriate message logged.
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void InitializeFromSignal(const siginfo_t* siginfo,
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const ucontext_t* context);
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//! \brief Initialize the object from a Mach exception for the current task.
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//!
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//! \return `true` if the snapshot could be created, `false` otherwise with
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//! an appropriate message logged.
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void InitializeFromMachException(exception_behavior_t behavior,
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thread_t exception_thread,
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exception_type_t exception,
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const mach_exception_data_type_t* code,
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mach_msg_type_number_t code_count,
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thread_state_flavor_t flavor,
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ConstThreadState state,
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mach_msg_type_number_t state_count);
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// ExceptionSnapshot:
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const CPUContext* Context() const override;
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uint64_t ThreadID() const override;
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uint32_t Exception() const override;
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uint32_t ExceptionInfo() const override;
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uint64_t ExceptionAddress() const override;
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const std::vector<uint64_t>& Codes() const override;
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virtual std::vector<const MemorySnapshot*> ExtraMemory() const override;
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private:
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#if defined(ARCH_CPU_X86_64)
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CPUContextX86_64 context_x86_64_;
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#elif defined(ARCH_CPU_ARM64)
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CPUContextARM64 context_arm64_;
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#else
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#error Port.
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#endif // ARCH_CPU_X86_64
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CPUContext context_;
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std::vector<uint64_t> codes_;
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uint64_t thread_id_;
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uintptr_t exception_address_;
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uint32_t exception_;
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uint32_t exception_info_;
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InitializationStateDcheck initialized_;
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DISALLOW_COPY_AND_ASSIGN(ExceptionSnapshotIOS);
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};
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} // namespace internal
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} // namespace crashpad
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#endif // CRASHPAD_SNAPSHOT_IOS_EXCEPTION_SNAPSHOT_IOS_H_
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