--- /dev/null
+// 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)