Vector Optimized Library of Kernels  2.4
Architecture-tuned implementations of math kernels
cpuid_x86.h
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1 // Copyright 2017 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #ifndef CPU_FEATURES_INCLUDE_INTERNAL_CPUID_X86_H_
16 #define CPU_FEATURES_INCLUDE_INTERNAL_CPUID_X86_H_
17 
18 #include <stdint.h>
19 
20 #include "cpu_features_macros.h"
21 
23 
24 // A struct to hold the result of a call to cpuid.
25 typedef struct {
26  uint32_t eax, ebx, ecx, edx;
27 } Leaf;
28 
29 // Returns the result of a call to the cpuid instruction.
30 Leaf GetCpuidLeaf(uint32_t leaf_id, int ecx);
31 
32 // Returns the eax value of the XCR0 register.
33 uint32_t GetXCR0Eax(void);
34 
36 
37 #endif // CPU_FEATURES_INCLUDE_INTERNAL_CPUID_X86_H_
Leaf GetCpuidLeaf(uint32_t leaf_id, int ecx)
Definition: cpuinfo_x86_test.cc:84
#define CPU_FEATURES_END_CPP_NAMESPACE
Definition: cpu_features_macros.h:115
uint32_t GetXCR0Eax(void)
Definition: cpuinfo_x86_test.cc:88
Definition: cpuid_x86.h:25
#define CPU_FEATURES_START_CPP_NAMESPACE
Definition: cpu_features_macros.h:114
uint32_t edx
Definition: cpuid_x86.h:26