src/lib/doslib/hw/cpu/cpuidext.c

   1
   2 #if defined(TARGET_WINDOWS) && TARGET_MSDOS == 16
   3 /* Win16: We're probably on a 386, but we could be on a 286 if Windows 3.1 is in standard mode.
   4  *        If the user manages to run us under Windows 3.0, we could also run in 8086 real mode.
   5  *        We still do the tests so the Windows API cannot deceive us, but we still need GetWinFlags
   6  *        to tell between 8086 real mode + virtual8086 mode and protected mode. */
   7 # include <windows.h>
   8 # include <toolhelp.h>
   9 #endif
  10
  11 #include <stdio.h>
  12 #include <conio.h> /* this is where Open Watcom hides the outp() etc. functions */
  13 #include <stdlib.h>
  14 #include <string.h>
  15 #include <unistd.h>
  16 #include <assert.h>
  17 #include <fcntl.h>
  18 #include <dos.h>
  19
  20 #include <hw/cpu/cpu.h>
  21 #include <hw/dos/dos.h>
  22 #include <hw/cpu/cpuidext.h>
  23
  24 /* DEBUG: Flush out calls that aren't there */
  25 #ifdef TARGET_OS2
  26 # define int86 ___EVIL___
  27 # define ntvdm_RegisterModule ___EVIL___
  28 # define ntvdm_UnregisterModule ___EVIL___
  29 # define _dos_getvect ___EVIL___
  30 # define _dos_setvect ___EVIL___
  31 #endif
  32
  33 #if defined(TARGET_WINDOWS) && TARGET_MSDOS == 16
  34 # include <hw/dos/winfcon.h>
  35 #endif
  36
  37 struct cpu_cpuid_ext_info*      cpu_cpuid_ext_info = NULL;
  38
  39 void cpu_extended_cpuid_info_free() {
  40         if (cpu_cpuid_ext_info) free(cpu_cpuid_ext_info);
  41         cpu_cpuid_ext_info = NULL;
  42 }
  43
  44 int cpu_extended_cpuid_probe() {
  45         struct cpuid_result r={0};
  46
  47         cpu_extended_cpuid_info_free();
  48
  49         cpu_cpuid_ext_info = malloc(sizeof(struct cpu_cpuid_ext_info));
  50         if (cpu_cpuid_ext_info == NULL) return 0;
  51         memset(cpu_cpuid_ext_info,0,sizeof(struct cpu_cpuid_ext_info));
  52
  53         if (cpu_flags & CPU_FLAG_CPUID) {
  54                 /* probe for extended CPUID */
  55                 cpu_cpuid(0x80000000UL,&r);
  56                 if (r.eax >= 0x80000001UL) {
  57                         cpu_cpuid_ext_info->cpuid_max = r.eax;
  58                         cpu_flags |= CPU_FLAG_CPUID_EXT;
  59
  60                         cpu_cpuid(0x80000001UL,&r);
  61                         cpu_cpuid_ext_info->features.a.raw[0] = r.eax;
  62                         cpu_cpuid_ext_info->features.a.raw[1] = r.ebx;
  63                         cpu_cpuid_ext_info->features.a.raw[2] = r.ecx;
  64                         cpu_cpuid_ext_info->features.a.raw[3] = r.edx;
  65
  66                         if (cpu_cpuid_ext_info->cpuid_max >= 0x80000004UL) {
  67                                 cpu_cpuid(0x80000002UL,&r);
  68                                 ((uint32_t*)cpu_cpuid_ext_info->brand)[0] = r.eax;
  69                                 ((uint32_t*)cpu_cpuid_ext_info->brand)[1] = r.ebx;
  70                                 ((uint32_t*)cpu_cpuid_ext_info->brand)[2] = r.ecx;
  71                                 ((uint32_t*)cpu_cpuid_ext_info->brand)[3] = r.edx;
  72
  73                                 cpu_cpuid(0x80000003UL,&r);
  74                                 ((uint32_t*)cpu_cpuid_ext_info->brand)[4] = r.eax;
  75                                 ((uint32_t*)cpu_cpuid_ext_info->brand)[5] = r.ebx;
  76                                 ((uint32_t*)cpu_cpuid_ext_info->brand)[6] = r.ecx;
  77                                 ((uint32_t*)cpu_cpuid_ext_info->brand)[7] = r.edx;
  78
  79                                 cpu_cpuid(0x80000004UL,&r);
  80                                 ((uint32_t*)cpu_cpuid_ext_info->brand)[8] = r.eax;
  81                                 ((uint32_t*)cpu_cpuid_ext_info->brand)[9] = r.ebx;
  82                                 ((uint32_t*)cpu_cpuid_ext_info->brand)[10] = r.ecx;
  83                                 ((uint32_t*)cpu_cpuid_ext_info->brand)[11] = r.edx;
  84
  85                                 cpu_cpuid_ext_info->brand[48] = 0;
  86                         }
  87
  88                         if (cpu_cpuid_ext_info->cpuid_max >= 0x80000005UL) {
  89                                 cpu_cpuid(0x80000005UL,&r);
  90                                 cpu_cpuid_ext_info->cache_tlb.a.raw[0] = r.eax;
  91                                 cpu_cpuid_ext_info->cache_tlb.a.raw[1] = r.ebx;
  92                                 cpu_cpuid_ext_info->cache_tlb.a.raw[2] = r.ecx;
  93                                 cpu_cpuid_ext_info->cache_tlb.a.raw[3] = r.edx;
  94                         }
  95
  96                         if (cpu_cpuid_ext_info->cpuid_max >= 0x80000006UL) {
  97                                 cpu_cpuid(0x80000006UL,&r);
  98                                 cpu_cpuid_ext_info->cache_tlb_l2.a.raw[0] = r.eax;
  99                                 cpu_cpuid_ext_info->cache_tlb_l2.a.raw[1] = r.ebx;
 100                                 cpu_cpuid_ext_info->cache_tlb_l2.a.raw[2] = r.ecx;
 101                                 cpu_cpuid_ext_info->cache_tlb_l2.a.raw[3] = r.edx;
 102                         }
 103
 104                         if (cpu_cpuid_ext_info->cpuid_max >= 0x80000007UL) {
 105                                 cpu_cpuid(0x80000007UL,&r);
 106                                 cpu_cpuid_ext_info->apm.a.raw[0] = r.eax;
 107                         }
 108
 109                         if (cpu_cpuid_ext_info->cpuid_max >= 0x80000008UL) {
 110                                 cpu_cpuid(0x80000008UL,&r);
 111                                 cpu_cpuid_ext_info->longmode.a.raw[0] = r.eax;
 112                                 cpu_cpuid_ext_info->longmode.a.raw[1] = r.ebx;
 113                                 cpu_cpuid_ext_info->longmode.a.raw[2] = r.ecx;
 114                                 cpu_cpuid_ext_info->longmode.a.raw[3] = r.edx;
 115                         }
 116                 }
 117         }
 118
 119         return (cpu_flags & CPU_FLAG_CPUID_EXT)?1:0;
 120 }
 121