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sys/dev/if_wg/include/sys/simd-x86_64.h
- This file was added.
| #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 | |||||