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// 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_