| // 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_X86_CPUID_READER_H_ |
| #define CRASHPAD_SNAPSHOT_X86_CPUID_READER_H_ |
| |
| #include <stdint.h> |
| |
| #include <string> |
| |
| #include "build/build_config.h" |
| |
| #if defined(ARCH_CPU_X86_FAMILY) |
| |
| namespace crashpad { |
| namespace internal { |
| |
| //! \brief Reads x86-family CPU information by calling `cpuid`. |
| class CpuidReader { |
| public: |
| CpuidReader(); |
| ~CpuidReader(); |
| |
| //! \see SystemSnapshot::CPURevision |
| uint32_t Revision() const; |
| |
| //! \see SystemSnapshot::CPUVendor |
| std::string Vendor() const { return vendor_; } |
| |
| //! \see SystemSnapshot::CPUX86Signature |
| uint32_t Signature() const { return signature_; } |
| |
| //! \see SystemSnapshot::CPUX86Features |
| uint64_t Features() const { return features_; } |
| |
| //! \see SystemSnapshot::CPUX86ExtendedFeatures |
| uint64_t ExtendedFeatures() const { return extended_features_; } |
| |
| //! \see SystemSnapshot::CPUX86Leaf7Features |
| uint32_t Leaf7Features() const; |
| |
| //! \see SystemSnapshot::NXEnabled |
| bool NXEnabled() const { return (ExtendedFeatures() & (1 << 20)) != 0; } |
| |
| //! \see SystemSnapshot::CPUX86SupportsDAZ |
| bool SupportsDAZ() const; |
| |
| private: |
| void Cpuid(uint32_t cpuinfo[4], uint32_t leaf) const; |
| |
| uint64_t features_; |
| uint64_t extended_features_; |
| std::string vendor_; |
| uint32_t max_leaf_; |
| uint32_t signature_; |
| }; |
| |
| } // namespace internal |
| } // namespace crashpad |
| |
| #endif // ARCH_CPU_X86_FAMILY |
| |
| #endif // CRASHPAD_SNAPSHOT_X86_CPUID_READER_H_ |