spicetools/external/cpu_features/include/internal/cpuid_x86.h

38 lines
1.1 KiB
C

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