/* Determine CPU support for SIMD
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* Copyright 2004 Phil Karn, KA9Q
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*/
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#include <stdio.h>
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#include "fec.h"
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/* Various SIMD instruction set names */
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char *Cpu_modes[] = {"Unknown","Portable C","x86 Multi Media Extensions (MMX)",
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"x86 Streaming SIMD Extensions (SSE)",
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"x86 Streaming SIMD Extensions 2 (SSE2)",
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"PowerPC G4/G5 Altivec/Velocity Engine"};
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enum cpu_mode Cpu_mode;
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void find_cpu_mode(void){
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int f;
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if(Cpu_mode != UNKNOWN)
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return;
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/* Figure out what kind of CPU we have */
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f = cpu_features();
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if(f & (1<<26)){ /* SSE2 is present */
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Cpu_mode = SSE2;
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} else if(f & (1<<25)){ /* SSE is present */
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Cpu_mode = SSE;
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} else if(f & (1<<23)){ /* MMX is present */
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Cpu_mode = MMX;
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} else { /* No SIMD at all */
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Cpu_mode = PORT;
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}
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fprintf(stderr,"SIMD CPU detect: %s\n",Cpu_modes[Cpu_mode]);
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}
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