1 // Copyright 2017 Google Inc.
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
7 // http://www.apache.org/licenses/LICENSE-2.0
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.
15 #include "internal/cpuid_x86.h"
17 #if defined(CPU_FEATURES_ARCH_X86)
18 #if defined(CPU_FEATURES_COMPILER_CLANG) || defined(CPU_FEATURES_COMPILER_GCC)
22 Leaf CpuId(uint32_t leaf_id) {
24 __cpuid_count(leaf_id, 0, leaf.eax, leaf.ebx, leaf.ecx, leaf.edx);
28 uint32_t GetXCR0Eax(void) {
30 __asm("XGETBV" : "=a"(eax), "=d"(edx) : "c"(0));
34 #endif // defined(CPU_FEATURES_COMPILER_CLANG) ||
35 // defined(CPU_FEATURES_COMPILER_GCC)
36 #endif // defined(CPU_FEATURES_ARCH_X86)