62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/*
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*
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*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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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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*
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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 Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/blenlib/intern/cpu.c
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* \ingroup bli
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*/
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#include "BLI_cpu.h"
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int BLI_cpu_support_sse2(void)
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{
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#if defined(__x86_64__) || defined(_M_X64)
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/* x86_64 always has SSE2 instructions */
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return 1;
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#elif defined(__GNUC__) && defined(i386)
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/* for GCC x86 we check cpuid */
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unsigned int d;
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__asm__(
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"pushl %%ebx\n\t"
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"cpuid\n\t"
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"popl %%ebx\n\t"
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: "=d"(d)
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: "a"(1));
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return (d & 0x04000000) != 0;
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#elif (defined(_MSC_VER) && defined(_M_IX86))
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/* also check cpuid for MSVC x86 */
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unsigned int d;
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__asm {
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xor eax, eax
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inc eax
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push ebx
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cpuid
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pop ebx
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mov d, edx
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}
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return (d & 0x04000000) != 0;
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#endif
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return 0;
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}
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