110 lines
2.7 KiB
C
110 lines
2.7 KiB
C
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// this should return the microarchitecture , NOT which code path we think is best
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#if CONFIG_GUESS
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// use's the stringinzing directive #x so MODELSTR(teddy) expands to modelstr="teddy"
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#define CPUIS(x) modelstr=#x
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#define __gmpn_cpuid cpuid
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#endif
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#if INFAT
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#define CPUIS(x) do{TRACE(printf(" "#x"\n"));CPUSETUP_##x;}while(0)
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#endif
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char vendor_string[13];
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char features[12];
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long fms;
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int family, model, stepping;
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char *modelstr;
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__gmpn_cpuid (vendor_string, 0);
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vendor_string[12] = 0;
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fms = __gmpn_cpuid (features, 1);
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family = ((fms >> 8) & 15) + ((fms >> 20) & 0xff);
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model = ((fms >> 4) & 15) + ((fms >> 12) & 0xf0);
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stepping = fms & 15;
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#if CONFIG_GUESS_64BIT
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modelstr = "x86_64";
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#else
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modelstr = "i486";// shouldn't we make this x86??
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#endif
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if (strcmp (vendor_string, "GenuineIntel") == 0)
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{
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switch (family)
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{
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#if CONFIG_GUESS_32BIT || FAT32
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case 5:
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if (model <= 2) CPUIS(pentium);
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if (model >= 4) CPUIS(pentiummmx);
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break;
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#endif
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case 6:
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#if CONFIG_GUESS_32BIT || FAT32
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if (model == 1) { CPUIS(pentiumpro);break;}
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if (model <= 6) { CPUIS(pentium2);break;}
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if (model <= 13){ CPUIS(pentium3);break;}
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if (model == 14){ CPUIS(core);break;}
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#endif
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if (model == 15){ CPUIS(core2);break;}
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if (model == 22){ CPUIS(core2);break;}
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if (model == 23){ CPUIS(penryn);break;}
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if (model == 26){ CPUIS(nehalem);break;}
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if (model == 28){ CPUIS(atom);break;}
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if (model == 29){ CPUIS(penryn);break;}
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break;
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case 15:
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#if CONFIG_GUESS_64BIT || FAT64
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__gmpn_cpuid(features,0x80000001);
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if ( features[8]&1 ){ CPUIS(netburstlahf);break;}
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CPUIS(netburst);
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#endif
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#if CONFIG_GUESS_32BIT || FAT32
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if (model <= 6) { CPUIS(pentium4);break;}
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int feat = ((int *)features)[2];
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if (feat & 1) { CPUIS(prescott);break;}
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#endif
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break;
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}
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}
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else if (strcmp (vendor_string, "AuthenticAMD") == 0)
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{
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switch (family)
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{
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#if CONFIG_GUESS_32BIT || FAT32
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case 5:
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if (model <= 3) { CPUIS(k5);break;}
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if (model <= 7) { CPUIS(k6);break;}
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if (model <= 8) { CPUIS(k62);break;}
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if (model <= 9) { CPUIS(k63);break;}
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break;
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case 6:
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CPUIS(k7);
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break;
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#endif
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case 15:
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CPUIS(k8);
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break;
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case 16:
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if (model == 2) { CPUIS(k10);break;} // phenom
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if (model == 4) { CPUIS(k10);break;} //phenom II
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break;
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}
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}
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#if CONFIG_GUESS_32 || FAT32
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else if (strcmp (vendor_string, "CyrixInstead") == 0)
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{
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/* Should recognize Cyrix' processors too. */
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}
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else if (strcmp (vendor_string, "CentaurHauls") == 0)
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{
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switch (family)
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{
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case 6:
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if (model < 9) { CPUIS(viac3);break;}
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CPUIS(viac32);break;
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}
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}
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#endif
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