| // 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. |
| |
| #include "internal/cpuid_x86.h" |
| |
| #if defined(CPU_FEATURES_ARCH_X86) |
| #if defined(CPU_FEATURES_COMPILER_CLANG) || defined(CPU_FEATURES_COMPILER_GCC) |
| |
| #include <cpuid.h> |
| |
| Leaf CpuId(uint32_t leaf_id) { |
| Leaf leaf; |
| __cpuid_count(leaf_id, 0, leaf.eax, leaf.ebx, leaf.ecx, leaf.edx); |
| return leaf; |
| } |
| |
| uint32_t GetXCR0Eax(void) { |
| uint32_t eax, edx; |
| __asm("XGETBV" : "=a"(eax), "=d"(edx) : "c"(0)); |
| return eax; |
| } |
| |
| #endif // defined(CPU_FEATURES_COMPILER_CLANG) || |
| // defined(CPU_FEATURES_COMPILER_GCC) |
| #endif // defined(CPU_FEATURES_ARCH_X86) |