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* Copyright (c) 2003, 2006 Matteo Frigo
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* Copyright (c) 2003, 2006 Massachusetts Institute of Technology
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* This program 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 by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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/* $Id: sse.c,v 1.16 2006-02-08 03:01:36 athena Exp $ */
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# if defined(__x86_64__) || defined(_M_X64) || defined(_M_AMD64)
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# include "x86-cpuid.h"
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static void sighandler(int x)
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static int sse_works(void)
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oldsig = signal(SIGILL, sighandler);
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signal(SIGILL, oldsig);
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_asm { xorps xmm0,xmm0 }
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/* asm volatile ("xorps %xmm0, %xmm0"); */
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asm volatile (".byte 0x0f; .byte 0x57; .byte 0xc0");
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signal(SIGILL, oldsig);
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static int init = 0, res;
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extern void X(check_alignment_of_sse_mpmp)(void);
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&& (cpuid_edx(1) & (1 << 25))
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X(check_alignment_of_sse_mpmp)();