com32/samples/advdump.c

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2007-2008 H. Peter Anvin - All Rights Reserved
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
   8  *   Boston MA 02111-1307, USA; either version 2 of the License, or
   9  *   (at your option) any later version; incorporated herein by reference.
  10  *
  11  * ----------------------------------------------------------------------- */
  12
  13 /*
  14  * advdump.c
  15  *
  16  * Dump the contents of the syslinux ADV
  17  */
  18
  19 #include <stdio.h>
  20 #include <console.h>
  21 #include <syslinux/adv.h>
  22 #include <string.h>
  23
  24 int main(void)
  25 {
  26   uint8_t *p, *ep;
  27   size_t s = syslinux_adv_size();
  28   char buf[256];
  29
  30   openconsole(&dev_stdcon_r, &dev_stdcon_w);
  31
  32   p = syslinux_adv_ptr();
  33
  34   printf("ADV size: %zd bytes at %p\n", s, p);
  35
  36   ep = p+s;                     /* Need at least opcode+len */
  37   while (p < ep-1 && *p) {
  38     int t = *p++;
  39     int l = *p++;
  40
  41     if (p+l > ep)
  42       break;
  43
  44     memcpy(buf, p, l);
  45     buf[l] = '\0';
  46
  47     printf("ADV %3d: \"%s\"\n", t, buf);
  48
  49     p += l;
  50   }
  51
  52   return 0;
  53 }