diff options
Diffstat (limited to 'source/blender/blenlib/intern/cpu.c')
| -rw-r--r-- | source/blender/blenlib/intern/cpu.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/cpu.c b/source/blender/blenlib/intern/cpu.c new file mode 100644 index 00000000000..65e6b34488c --- /dev/null +++ b/source/blender/blenlib/intern/cpu.c @@ -0,0 +1,57 @@ +/** + * + * $Id$ + * + * ***** 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 ***** + */ + +#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; +} + |