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				#ifndef _SIMD_X86_64_H_
				#define _SIMD_X86_64_H_


				#include <x86/x86_var.h>
				#include <x86/specialreg.h>

				static inline uint64_t
				xgetbv(uint32_t index)
				{
				uint32_t eax, edx;
				/* xgetbv - instruction byte code */
				__asm__ __volatile__(".byte 0x0f; .byte 0x01; .byte 0xd0"
				: "=a" (eax), "=d" (edx)
				: "c" (index));

				return ((((uint64_t)edx)<<32) \| (uint64_t)eax);
				}


				/*
				* Detect register set support
				*/
				static inline boolean_t
				__simd_state_enabled(const uint64_t state)
				{
				boolean_t has_osxsave;
				uint64_t xcr0;

				has_osxsave = !!(cpu_feature2 & CPUID2_OSXSAVE);

				if (!has_osxsave)
				return (0);

				xcr0 = xgetbv(0);
				return ((xcr0 & state) == state);
				}

				#define _XSTATE_SSE_AVX (0x2 \| 0x4)
				#define _XSTATE_AVX512 (0xE0 \| _XSTATE_SSE_AVX)

				#define __ymm_enabled() __simd_state_enabled(_XSTATE_SSE_AVX)
				#define __zmm_enabled() __simd_state_enabled(_XSTATE_AVX512)
				#endif