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| author | Matthias P. Braendli <matthias.braendli@mpb.li> | 2014-01-02 21:55:13 +0100 |
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| committer | Matthias P. Braendli <matthias.braendli@mpb.li> | 2014-01-02 21:55:13 +0100 |
| commit | a31630e0d5b9880c716d9004ef4154396ba41ebc (patch) | |
| tree | aebbd3b132e5f2dd31bc34750ccded2378fc687a /cpu_mode_x86.c | |
| parent | 9aaac5be9db5e1537badc65242412ef14c5096e3 (diff) | |
| download | ka9q-fec-a31630e0d5b9880c716d9004ef4154396ba41ebc.tar.gz ka9q-fec-a31630e0d5b9880c716d9004ef4154396ba41ebc.tar.bz2 ka9q-fec-a31630e0d5b9880c716d9004ef4154396ba41ebc.zip | |
Extract fec-3.0.1
Diffstat (limited to 'cpu_mode_x86.c')
| -rw-r--r-- | cpu_mode_x86.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/cpu_mode_x86.c b/cpu_mode_x86.c new file mode 100644 index 0000000..322018e --- /dev/null +++ b/cpu_mode_x86.c @@ -0,0 +1,33 @@ +/* Determine CPU support for SIMD + * Copyright 2004 Phil Karn, KA9Q + */ +#include <stdio.h> +#include "fec.h" + +/* Various SIMD instruction set names */ +char *Cpu_modes[] = {"Unknown","Portable C","x86 Multi Media Extensions (MMX)", + "x86 Streaming SIMD Extensions (SSE)", + "x86 Streaming SIMD Extensions 2 (SSE2)", + "PowerPC G4/G5 Altivec/Velocity Engine"}; + +enum cpu_mode Cpu_mode; + +void find_cpu_mode(void){ + + int f; + if(Cpu_mode != UNKNOWN) + return; + + /* Figure out what kind of CPU we have */ + f = cpu_features(); + if(f & (1<<26)){ /* SSE2 is present */ + Cpu_mode = SSE2; + } else if(f & (1<<25)){ /* SSE is present */ + Cpu_mode = SSE; + } else if(f & (1<<23)){ /* MMX is present */ + Cpu_mode = MMX; + } else { /* No SIMD at all */ + Cpu_mode = PORT; + } + fprintf(stderr,"SIMD CPU detect: %s\n",Cpu_modes[Cpu_mode]); +} |