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ARM64 supports storing pointer authentication codes in the upper bits of a pointer. This mask can be used by LLDB to mimic ptrauth_strip and strip the pointer authentication codes. To recover an address from pointer with an authentication code, `AND` this mask with the pointer. If the platform does not support pointer authentication, or the range of valid addressees for a pointer was unaccessible, this field will be 0 and should be ignored. Change-Id: Ie5cef90802dd1e892d456195ab8874223eac6a1b Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2773358 Commit-Queue: Justin Cohen <justincohen@chromium.org> Reviewed-by: Mark Mentovai <mark@chromium.org>
90 lines
3.3 KiB
C++
90 lines
3.3 KiB
C++
// Copyright 2018 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_MINIDUMP_SYSTEM_SNAPSHOT_MINIDUMP_H_
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#define CRASHPAD_SNAPSHOT_MINIDUMP_SYSTEM_SNAPSHOT_MINIDUMP_H_
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#include <windows.h>
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#include "minidump/minidump_extensions.h"
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#include "snapshot/system_snapshot.h"
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#include "util/file/file_reader.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 A SystemSnapshot based on a minidump file.
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class SystemSnapshotMinidump : public SystemSnapshot {
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public:
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SystemSnapshotMinidump();
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SystemSnapshotMinidump(const SystemSnapshotMinidump&) = delete;
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SystemSnapshotMinidump& operator=(const SystemSnapshotMinidump&) = delete;
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~SystemSnapshotMinidump() override;
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//! \brief Initializes the object.
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//!
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//! \param[in] file_reader A file reader corresponding to a minidump file.
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//! The file reader must support seeking.
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//! \param[in] minidump_system_info_rva The file offset in \a file_reader at
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//! which the thread’s MINIDUMP_SYSTEM_INFO structure is located.
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//! \param[in] version The OS version taken from the build string in
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//! MINIDUMP_MISC_INFO_4.
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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 Initialize(FileReaderInterface* file_reader,
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RVA minidump_system_info_rva,
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const std::string& version);
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CPUArchitecture GetCPUArchitecture() const override;
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uint32_t CPURevision() const override;
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uint8_t CPUCount() const override;
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std::string CPUVendor() const override;
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void CPUFrequency(uint64_t* current_hz, uint64_t* max_hz) const override;
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uint32_t CPUX86Signature() const override;
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uint64_t CPUX86Features() const override;
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uint64_t CPUX86ExtendedFeatures() const override;
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uint32_t CPUX86Leaf7Features() const override;
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bool CPUX86SupportsDAZ() const override;
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OperatingSystem GetOperatingSystem() const override;
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bool OSServer() const override;
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void OSVersion(int* major,
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int* minor,
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int* bugfix,
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std::string* build) const override;
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std::string OSVersionFull() const override;
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std::string MachineDescription() const override;
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bool NXEnabled() const override;
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void TimeZone(DaylightSavingTimeStatus* dst_status,
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int* standard_offset_seconds,
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int* daylight_offset_seconds,
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std::string* standard_name,
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std::string* daylight_name) const override;
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uint64_t AddressMask() const override;
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private:
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MINIDUMP_SYSTEM_INFO minidump_system_info_;
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std::string minidump_build_name_;
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std::string full_version_;
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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_MINIDUMP_SYSTEM_SNAPSHOT_MINIDUMP_H_
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