75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
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// Copyright 2017 The Crashpad Authors. All rights reserved.
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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_X86_CPUID_READER_H_
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#define CRASHPAD_SNAPSHOT_X86_CPUID_READER_H_
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#include <stdint.h>
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#include <string>
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#include "build/build_config.h"
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#if defined(ARCH_CPU_X86_FAMILY)
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namespace crashpad {
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namespace internal {
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//! \brief Reads x86-family CPU information by calling `cpuid`.
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class CpuidReader {
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public:
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CpuidReader();
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~CpuidReader();
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//! \see SystemSnapshot::CPURevision
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uint32_t Revision() const;
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//! \see SystemSnapshot::CPUVendor
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std::string Vendor() const { return vendor_; }
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//! \see SystemSnapshot::CPUX86Signature
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uint32_t Signature() const { return signature_; }
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//! \see SystemSnapshot::CPUX86Features
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uint64_t Features() const { return features_; }
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//! \see SystemSnapshot::CPUX86ExtendedFeatures
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uint64_t ExtendedFeatures() const { return extended_features_; }
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//! \see SystemSnapshot::CPUX86Leaf7Features
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uint32_t Leaf7Features() const;
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//! \see SystemSnapshot::NXEnabled
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bool NXEnabled() const { return (ExtendedFeatures() & (1 << 20)) != 0; }
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//! \see SystemSnapshot::CPUX86SupportsDAZ
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bool SupportsDAZ() const;
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private:
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void Cpuid(uint32_t cpuinfo[4], uint32_t leaf) const;
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uint64_t features_;
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uint64_t extended_features_;
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std::string vendor_;
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uint32_t max_leaf_;
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uint32_t signature_;
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};
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} // namespace internal
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} // namespace crashpad
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#endif // ARCH_CPU_X86_FAMILY
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#endif // CRASHPAD_SNAPSHOT_X86_CPUID_READER_H_
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