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1cea0473a5
Previously, Crashpad would only capture iOS thread context memory regions by iterating the task_threads->thread_get_state's. For Mach exception this worked as intended. However, for signal exceptions this missed the registers from the actual signal context. This change correctly captures these regions and stores them in the exception snapshot. Change-Id: I494e753a25c2687e61b5183ed0135f520ca8bf52 Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/5380505 Reviewed-by: Mark Mentovai <mark@chromium.org> Commit-Queue: Justin Cohen <justincohen@chromium.org>
119 lines
4.4 KiB
C++
119 lines
4.4 KiB
C++
// Copyright 2020 The Crashpad Authors
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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_INTERMEDIATE_DUMP_EXCEPTION_SNAPSHOT_IOS_INTERMEDIATEDUMP_H_
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#define CRASHPAD_SNAPSHOT_IOS_INTERMEDIATE_DUMP_EXCEPTION_SNAPSHOT_IOS_INTERMEDIATEDUMP_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 "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 "snapshot/ios/memory_snapshot_ios_intermediate_dump.h"
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#include "util/ios/ios_intermediate_dump_map.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 ExceptionSnapshotIOSIntermediateDump final : public ExceptionSnapshot {
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public:
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ExceptionSnapshotIOSIntermediateDump();
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ExceptionSnapshotIOSIntermediateDump(
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const ExceptionSnapshotIOSIntermediateDump&) = delete;
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ExceptionSnapshotIOSIntermediateDump& operator=(
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const ExceptionSnapshotIOSIntermediateDump&) = delete;
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~ExceptionSnapshotIOSIntermediateDump() override;
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//! \brief Initialize the snapshot as a signal exception.
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//!
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//! \param[in] exception_data The intermediate dump map used to initialize
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//! this object.
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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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bool InitializeFromSignal(const IOSIntermediateDumpMap* exception_data);
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//! \brief Initialize the object as a Mach exception from an intermediate
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//! dump.
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//!
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//! \param[in] exception_data The intermediate dump map used to initialize
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//! this object.
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//! \param[in] thread_list The intermediate dump map containing list of
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//! threads.
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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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bool InitializeFromMachException(const IOSIntermediateDumpMap* exception_data,
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const IOSIntermediateDumpList* thread_list);
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//! \brief Initialize the object as an NSException from an intermediate dump.
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//!
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//! \param[in] exception_data The intermediate dump map used to initialize
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//! this object.
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//! \param[in] thread_list The intermediate dump map containing list of
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//! threads.
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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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bool InitializeFromNSException(const IOSIntermediateDumpMap* exception_data,
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const IOSIntermediateDumpList* thread_list);
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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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void LoadContextFromUncaughtNSExceptionFrames(
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const IOSIntermediateDumpData* data,
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const IOSIntermediateDumpMap* other_thread);
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void LoadContextFromThread(const IOSIntermediateDumpMap* exception_data,
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const IOSIntermediateDumpMap* other_thread);
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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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std::vector<std::unique_ptr<internal::MemorySnapshotIOSIntermediateDump>>
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extra_memory_;
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InitializationStateDcheck initialized_;
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};
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} // namespace internal
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} // namespace crashpad
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#endif // CRASHPAD_SNAPSHOT_IOS_INTERMEDIATE_DUMP_EXCEPTION_SNAPSHOT_IOS_INTERMEDIATEDUMP_H_
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