/*
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* Copyright (C) 2006 Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>.
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*
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* Xenomai is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License,
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* or (at your option) any later version.
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*
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* Xenomai is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Xenomai; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#ifndef _COBALT_X86_ASM_FPTEST_H
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#define _COBALT_X86_ASM_FPTEST_H
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#include <linux/errno.h>
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#include <asm/processor.h>
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#include <asm/xenomai/wrappers.h>
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#include <asm/xenomai/uapi/fptest.h>
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static inline int fp_kernel_supported(void)
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{
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return 1;
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}
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static inline void fp_init(void)
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{
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__asm__ __volatile__("fninit");
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}
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static inline int fp_linux_begin(void)
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{
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kernel_fpu_begin();
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/* kernel_fpu_begin() does no re-initialize the fpu context, but
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fp_regs_set() implicitely expects an initialized fpu context, so
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initialize it here. */
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fp_init();
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return 0;
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}
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static inline void fp_linux_end(void)
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{
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kernel_fpu_end();
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}
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static inline int fp_detect(void)
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{
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int features = 0;
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#ifndef cpu_has_xmm2
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#ifdef cpu_has_sse2
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#define cpu_has_xmm2 cpu_has_sse2
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#else
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#define cpu_has_xmm2 0
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#endif
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#endif
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if (cpu_has_xmm2)
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features |= __COBALT_HAVE_SSE2;
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#ifndef cpu_has_avx
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#define cpu_has_avx 0
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#endif
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if (cpu_has_avx)
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features |= __COBALT_HAVE_AVX;
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return features;
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}
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#endif /* _COBALT_X86_ASM_FPTEST_H */
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