38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
// Copyright 2017 Google LLC
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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 CPU_FEATURES_INCLUDE_INTERNAL_CPUID_X86_H_
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#define CPU_FEATURES_INCLUDE_INTERNAL_CPUID_X86_H_
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#include <stdint.h>
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#include "cpu_features_macros.h"
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CPU_FEATURES_START_CPP_NAMESPACE
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// A struct to hold the result of a call to cpuid.
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typedef struct {
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uint32_t eax, ebx, ecx, edx;
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} Leaf;
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// Returns the result of a call to the cpuid instruction.
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Leaf GetCpuidLeaf(uint32_t leaf_id, int ecx);
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// Returns the eax value of the XCR0 register.
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uint32_t GetXCR0Eax(void);
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CPU_FEATURES_END_CPP_NAMESPACE
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#endif // CPU_FEATURES_INCLUDE_INTERNAL_CPUID_X86_H_
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