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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/blenlib/intern/cpu.c
* \ingroup bli
*/
#include "BLI_cpu.h"
int BLI_cpu_support_sse2(void)
{
#if defined(__x86_64__) || defined(_M_X64)
/* x86_64 always has SSE2 instructions */
return 1;
#elif defined(__GNUC__) && defined(i386)
/* for GCC x86 we check cpuid */
unsigned int d;
__asm__(
"pushl %%ebx\n\t"
"cpuid\n\t"
"popl %%ebx\n\t"
: "=d"(d)
: "a"(1));
return (d & 0x04000000) != 0;
#elif (defined(_MSC_VER) && defined(_M_IX86))
/* also check cpuid for MSVC x86 */
unsigned int d;
__asm {
xor eax, eax
inc eax
push ebx
cpuid
pop ebx
mov d, edx
}
return (d & 0x04000000) != 0;
#endif
return 0;
}
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