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head/sys/dev/if_wg/include/sys/simd-x86_64.h
| Property | Old Value | New Value |
|---|---|---|
| svn:eol-style | null | native \ No newline at end of property |
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| /*- | |||||
| * SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||
| * | |||||
| * Copyright (c) 2019-2020 Rubicon Communications, LLC (Netgate) | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. Redistributions in binary form must reproduce the above copyright | |||||
| * notice, this list of conditions and the following disclaimer in the | |||||
| * documentation and/or other materials provided with the distribution. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||||
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
| * SUCH DAMAGE. | |||||
| * | |||||
| * $FreeBSD$ | |||||
| */ | |||||
| #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 | |||||