// Copyright 2017 Google Inc. // // 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 #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; // Retrieves the leaf for a particular cpuid. Leaf CpuId(uint32_t leaf_id); // 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_