testvbe.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <string.h>
   5 #include <errno.h>
   6 #include <time.h>
   7 #include <fcntl.h>
   8
   9 #include "v86.h"
  10 #include "testvbe.h"
  11
  12 #define reg16(reg) (reg & 0xffff)
  13 #define failed(tsk) (reg16(tsk.regs.eax) != 0x004f)
  14
  15 int main(int argc, char *argv[])
  16 {
  17         struct uvesafb_task tsk;
  18         struct vbe_ib ib;
  19         u16 *s;
  20         u8 *t;
  21
  22         if (v86_init())
  23                 return -1;
  24
  25         memset(&tsk, 0, sizeof(tsk));
  26         tsk.regs.eax = 0x4f00;
  27         tsk.flags = TF_VBEIB;
  28         tsk.buf_len = sizeof(ib);
  29         strncpy((char*)&ib.vbe_signature, "VBE2", 4);
  30
  31         if (v86_task(&tsk, (u8*)&ib))
  32                 return -1;
  33
  34         if (failed(tsk)) {
  35                 fprintf(stderr, "Getting VBE Info Block failed with eax = %.4x\n",
  36                                 reg16(tsk.regs.eax));
  37                 return -1;
  38         }
  39
  40         t = (u8*)&ib;
  41
  42         printf("VBE Version:     %x.%.2x\n", ((ib.vbe_version & 0xf00) >> 8), (ib.vbe_version & 0xff));
  43         printf("OEM String:      %s\n", ib.oem_string_ptr + t);
  44         printf("OEM Vendor Name: %s\n", ib.oem_vendor_name_ptr + t);
  45         printf("OEM Prod. Name:  %s\n", ib.oem_product_name_ptr + t);
  46         printf("OEM Prod. Rev:   %s\n", ib.oem_product_rev_ptr + t);
  47
  48         printf("\n%-6s %-6s mode\n", "ID", "attr");
  49         printf("---------------------------\n");
  50
  51         for (s = t + ib.mode_list_ptr; *s != 0xffff; s++) {
  52                 struct vbe_mode_ib mib;
  53
  54                 memset(&tsk, 0, sizeof(tsk));
  55                 tsk.regs.eax = 0x4f01;
  56                 tsk.regs.ecx = *s;
  57                 tsk.flags = TF_BUF_RET | TF_BUF_ESDI;
  58                 tsk.buf_len = sizeof(mib);
  59
  60                 if (v86_task(&tsk, (u8*)&mib))
  61                         return -1;
  62
  63                 if (failed(tsk)) {
  64                         fprintf(stderr, "Getting Mode Info Block for mode %.4x "
  65                                         "failed with eax = %.4x\n",     *s, reg16(tsk.regs.eax));
  66                         return -1;
  67                 }
  68
  69                 printf("%-6.4x %-6.4x %dx%d-%d %x\n", *s, mib.mode_attr,
  70                                 mib.x_res, mib.y_res, mib.bits_per_pixel, mib.phys_base_ptr);
  71         }
  72
  73         v86_cleanup();
  74
  75         return 0;
  76 }