git.mutantstargoat.com Git - dosdemo/blob - src/cpuid.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include "cpuid.h"
   4
   5 static const char *cpuname(struct cpuid_info *cpu);
   6 static const char *cpuvendor(struct cpuid_info *cpu);
   7
   8 struct cpuid_info cpuid;
   9
  10 void print_cpuid(struct cpuid_info *cpu)
  11 {
  12         int i, col, len;
  13         char buf[64];
  14         static const char *featstr[32] = {
  15                 "fpu", "vme", "dbgext", "pse", "tsc", "msr", "pae", "mce",
  16                 "cx8", "apic", "?", "sep", "mtrr", "pge", "mca", "cmov",
  17                 "pat", "pse36", "psn", "clf", "?", "dtes", "acpi", "mmx",
  18                 "fxsr", "sse", "sse2", "ss", "htt", "tm1", "ia64", "pbe"};
  19         static const char *feat2str[32] = {
  20                 "sse3", "pclmul", "dtes64", "monitor", "ds-cpl", "vmx", "smx", "est",
  21                 "tm2", "ssse3", "cid", "sdbg", "fma", "cx16", "etprd", "pdcm",
  22                 "?", "pcid", "dca", "sse41", "sse42", "x2apic", "movbe", "popcnt",
  23                 "?", "aes", "xsave", "osxsave", "avx", "f16c", "rdrand", "?"};
  24
  25         printf("CPU: %s - %s\n", cpuvendor(cpu), cpuname(cpu));
  26         printf("features:\n   ");
  27         col = 3;
  28         for(i=0; i<32; i++) {
  29                 if(cpu->feat & (1 << i)) {
  30                         len = strlen(featstr[i]) + 1;
  31                         if(col + len >= 80) {
  32                                 fputs("\n   ", stdout);
  33                                 col = 3;
  34                         }
  35                         col += printf(" %s", featstr[i]);
  36                 }
  37         }
  38         for(i=0; i<32; i++) {
  39                 if(cpu->feat2 & (1 << i)) {
  40                         len = strlen(feat2str[i]) + 1;
  41                         if(col + len >= 80) {
  42                                 fputs("\n   ", stdout);
  43                                 col = 3;
  44                         }
  45                         col += printf(" %s", feat2str[i]);
  46                 }
  47         }
  48         putchar('\n');
  49 }
  50
  51 static const char *fam4_models[16] = {
  52         "486 DX 25/33", "486 DX 50", "486 SX", "486 DX/2", "486 SL", "486 SX/2",
  53         0, "486 DX/2-WB", "486 DX/4", "486 DX/4-WB"
  54 };
  55 static const char *fam5_models[16] = {
  56         "Pentium 60/66", "Pentium 60/66", "Pentium 75-200", "OverDrive", "Pentium MMX",
  57         0, 0, "Mobile Pentium 75-200", "Mobile Pentium MMX", "Quark"
  58 };
  59 static const char *fam6_models[16] = {
  60         "Pentium Pro", "Pentium Pro", 0, "Pentium 2", "Pentium 2", "Pentium 2",
  61         "Mobile Pentium 2", "Pentium 3", "Pentium 3", 0, "Pentium 3", "Pentium 3"
  62 };
  63
  64
  65 static const char *cpuname(struct cpuid_info *cpu)
  66 {
  67         int model, family;
  68         char *rd, *wr;
  69
  70         if(*cpu->brandstr) {
  71                 /* unwank the string */
  72                 rd = wr = cpu->brandstr;
  73                 while(*rd) {
  74                         if(rd[0] == '(' && rd[1] == 'T' && rd[2] == 'M' && rd[3] == ')')
  75                                 rd += 4;
  76                         else if(rd[0] == '(' && rd[1] == 'R' && rd[2] == ')')
  77                                 rd += 3;
  78                         if(rd != wr) *wr = *rd;
  79                         wr++;
  80                         rd++;
  81                 }
  82                 return cpu->brandstr;
  83         }
  84
  85         if(CPUID_EXTMODEL(cpu->id)) {
  86                 /* processors new enough to have an extended model, should also provide
  87                  * a brand string. If we end up here, we don't know what it is
  88                  */
  89                 return "unknown";
  90         }
  91
  92         model = CPUID_MODEL(cpu->id);
  93         family = CPUID_FAMILY(cpu->id) | (CPUID_EXTFAMILY(cpu->id) << 4);
  94
  95         switch(family) {
  96         case 3: return "386";
  97         case 4: return fam4_models[model] ? fam4_models[model] : "486";
  98         case 5: return fam5_models[model] ? fam5_models[model] : "Pentium";
  99         case 6: return fam6_models[model] ? fam6_models[model] : "unknown";
 100         case 15: return "Pentium 4";
 101         default:
 102                 break;
 103         }
 104         return "unknown";
 105 }
 106
 107 static const char *cpuvendor(struct cpuid_info *cpu)
 108 {
 109         static char other[16];
 110         static const struct { const char *wank, *vendor; } unwanktab[] = {
 111                 {"GenuineIntel", "intel"},
 112                 {"AuthenticAMD", "AMD"},
 113                 {"AMDisbetter!", "AMD"},
 114                 {"CentaurHauls", "IDT"},
 115                 {"CyrixInstead", "Cyrix"},
 116                 {"TransmetaCPU", "Transmeta"},
 117                 {"GenuineTMx86", "Transmeta"},
 118                 {"Geode by NSC", "NatSemi"},
 119                 {"NexGenDriven", "NexGen"},
 120                 {"RiseRiseRise", "Rise"},
 121                 {"SiS SiS SiS ", "SiS"},
 122                 {"UMC UMC UMC ", "UMC"},
 123                 {"VIA VIA VIA ", "VIA"},
 124                 {"Vortex86 SoC", "DM&P"},
 125                 {"  Shanghai  ", "Zhaoxin"},
 126                 {"HygonGenuine", "Hygon"},
 127                 {"E2K MACHINE", "MCST Elbrus"},
 128                 {"MiSTer A0486", "ao486"},
 129                 {"bhyve bhyve ", "bhyve"},
 130                 {" KVMKVMKVM  ", "KVM"},
 131                 {"TCGTCGTCGTCG", "qemu"},
 132                 {"Microsoft Hv", "MS Hyper-V"},
 133                 {" lrpepyh  vr", "Parallels"},
 134                 {"VMwareVMware", "VMware"},
 135                 {"XenVMMXenVMM", "Xen"},
 136                 {"ACRNACRNACRN", "ACRN"},
 137                 {" QNXQVMBSQG ", "QNX Hypervisor"},
 138                 {0, 0}
 139         };
 140
 141         int i;
 142         for(i=0; unwanktab[i].wank; i++) {
 143                 if(memcmp(cpu->vendor, unwanktab[i].wank, 12) == 0) {
 144                         return unwanktab[i].vendor;
 145                 }
 146         }
 147
 148         memcpy(other, cpu->vendor, 12);
 149         other[12] = 0;
 150         return other;
 151 }