mirror of
https://github.com/chromium/crashpad.git
synced 2024-12-27 15:32:10 +08:00
c11d49db88
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>
116 lines
4.3 KiB
C++
116 lines
4.3 KiB
C++
// Copyright 2017 The Crashpad Authors
|
||
//
|
||
// 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_SYSTEM_SNAPSHOT_LINUX_H_
|
||
#define CRASHPAD_SNAPSHOT_LINUX_SYSTEM_SNAPSHOT_LINUX_H_
|
||
|
||
#include <stdint.h>
|
||
#include <time.h>
|
||
|
||
#include <string>
|
||
|
||
#include "build/build_config.h"
|
||
#include "snapshot/linux/process_reader_linux.h"
|
||
#include "snapshot/system_snapshot.h"
|
||
#include "util/misc/initialization_state_dcheck.h"
|
||
|
||
#if defined(ARCH_CPU_X86_FAMILY)
|
||
#include "snapshot/x86/cpuid_reader.h"
|
||
#endif // ARCH_CPU_X86_FAMILY
|
||
|
||
namespace crashpad {
|
||
namespace internal {
|
||
|
||
//! \brief A SystemSnapshot of the running system, when the system runs Linux.
|
||
class SystemSnapshotLinux final : public SystemSnapshot {
|
||
public:
|
||
SystemSnapshotLinux();
|
||
|
||
SystemSnapshotLinux(const SystemSnapshotLinux&) = delete;
|
||
SystemSnapshotLinux& operator=(const SystemSnapshotLinux&) = delete;
|
||
|
||
~SystemSnapshotLinux() override;
|
||
|
||
//! \brief Initializes the object.
|
||
//!
|
||
//! \param[in] process_reader A reader for the process being snapshotted.
|
||
//! \n\n
|
||
//! It seems odd that a system snapshot implementation would need a
|
||
//! ProcessReaderLinux, but some of the information reported about the
|
||
//! system depends on the process it’s being reported for. For example,
|
||
//! the architecture returned by GetCPUArchitecture() should be the
|
||
//! architecture of the process, which may be different than the native
|
||
//! architecture of the system: an x86_64 system can run both x86_64 and
|
||
//! 32-bit x86 processes.
|
||
//! \param[in] snapshot_time The time of the snapshot being taken.
|
||
//! \n\n
|
||
//! This parameter is necessary for TimeZone() to determine whether
|
||
//! daylight saving time was in effect at the time the snapshot was taken.
|
||
//! Otherwise, it would need to base its determination on the current
|
||
//! time, which may be different than the snapshot time for snapshots
|
||
//! generated around the daylight saving transition time.
|
||
void Initialize(ProcessReaderLinux* process_reader,
|
||
const timeval* snapshot_time);
|
||
|
||
// SystemSnapshot:
|
||
|
||
CPUArchitecture GetCPUArchitecture() const override;
|
||
uint32_t CPURevision() const override;
|
||
uint8_t CPUCount() const override;
|
||
std::string CPUVendor() const override;
|
||
void CPUFrequency(uint64_t* current_hz, uint64_t* max_hz) const override;
|
||
uint32_t CPUX86Signature() const override;
|
||
uint64_t CPUX86Features() const override;
|
||
uint64_t CPUX86ExtendedFeatures() const override;
|
||
uint32_t CPUX86Leaf7Features() const override;
|
||
bool CPUX86SupportsDAZ() const override;
|
||
OperatingSystem GetOperatingSystem() const override;
|
||
bool OSServer() const override;
|
||
void OSVersion(int* major,
|
||
int* minor,
|
||
int* bugfix,
|
||
std::string* build) const override;
|
||
std::string OSVersionFull() const override;
|
||
bool NXEnabled() const override;
|
||
std::string MachineDescription() const override;
|
||
void TimeZone(DaylightSavingTimeStatus* dst_status,
|
||
int* standard_offset_seconds,
|
||
int* daylight_offset_seconds,
|
||
std::string* standard_name,
|
||
std::string* daylight_name) const override;
|
||
uint64_t AddressMask() const override { return 0; }
|
||
|
||
private:
|
||
void ReadKernelVersion(const std::string& version_string);
|
||
|
||
std::string os_version_full_;
|
||
std::string os_version_build_;
|
||
ProcessReaderLinux* process_reader_; // weak
|
||
const timeval* snapshot_time_; // weak
|
||
#if defined(ARCH_CPU_X86_FAMILY)
|
||
CpuidReader cpuid_;
|
||
#endif // ARCH_CPU_X86_FAMILY
|
||
int os_version_major_;
|
||
int os_version_minor_;
|
||
int os_version_bugfix_;
|
||
uint32_t target_cpu_;
|
||
uint8_t cpu_count_;
|
||
InitializationStateDcheck initialized_;
|
||
};
|
||
|
||
} // namespace internal
|
||
} // namespace crashpad
|
||
|
||
#endif // CRASHPAD_SNAPSHOT_LINUX_SYSTEM_SNAPSHOT_LINUX_H_
|