| 0,0 → 1,49 |
|---|
| /* |
| getcpucpuflags: get cpuflags for ia32 |
| |
| copyright ?-2007 by the mpg123 project - free software under the terms of the LGPL 2.1 |
| see COPYING and AUTHORS files in distribution or http:#mpg123.org |
| initially written by KIMURA Takuhiro (for 3DNow!) |
| extended for general use by Thomas Orgis |
| */ |
| |
| #ifndef MPG123_H_GETCPUFLAGS |
| #define MPG123_H_GETCPUFLAGS |
| |
| /* standard level flags part 1 (ECX)*/ |
| #define FLAG_SSE3 0x00000001 |
| |
| /* standard level flags part 2 (EDX) */ |
| #define FLAG2_MMX 0x00800000 |
| #define FLAG2_SSE 0x02000000 |
| #define FLAG2_SSE2 0x04000000 |
| #define FLAG2_FPU 0x00000001 |
| /* cpuid extended level 1 (AMD) */ |
| #define XFLAG_MMX 0x00800000 |
| #define XFLAG_3DNOW 0x80000000 |
| #define XFLAG_3DNOWEXT 0x40000000 |
| |
| struct cpuflags |
| { |
| unsigned int id; |
| unsigned int std; |
| unsigned int std2; |
| unsigned int ext; |
| }; |
| |
| extern struct cpuflags cpu_flags; |
| |
| unsigned int getcpuflags(struct cpuflags* cf); |
| |
| /* checks the family */ |
| #define cpu_i586(s) ( ((s.id & 0xf00)>>8) == 0 || ((s.id & 0xf00)>>8) > 4 ) |
| /* checking some flags... */ |
| #define cpu_fpu(s) (FLAG2_FPU & s.std2) |
| #define cpu_mmx(s) (FLAG2_MMX & s.std2 || XFLAG_MMX & s.ext) |
| #define cpu_3dnow(s) (XFLAG_3DNOW & s.ext) |
| #define cpu_3dnowext(s) (XFLAG_3DNOWEXT & s.ext) |
| #define cpu_sse(s) (FLAG2_SSE & s.std2) |
| #define cpu_sse2(s) (FLAG2_SSE2 & s.std2) |
| #define cpu_sse3(s) (FLAG_SSE3 & s.std) |
| |
| #endif |