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