usage.cc

   1 /////////////////////////////////////////////////////////////////////////
   2 // $Id$
   3 /////////////////////////////////////////////////////////////////////////
   4 //
   5 //  Copyright (C) 2001  MandrakeSoft S.A.
   6 //
   7 //    MandrakeSoft S.A.
   8 //    43, rue d'Aboukir
   9 //    75002 Paris - France
  10 //    http://www.linux-mandrake.com/
  11 //    http://www.mandrakesoft.com/
  12 //
  13 //  This library is free software; you can redistribute it and/or
  14 //  modify it under the terms of the GNU Lesser General Public
  15 //  License as published by the Free Software Foundation; either
  16 //  version 2 of the License, or (at your option) any later version.
  17 //
  18 //  This library is distributed in the hope that it will be useful,
  19 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21 //  Lesser General Public License for more details.
  22 //
  23 //  You should have received a copy of the GNU Lesser General Public
  24 //  License along with this library; if not, write to the Free Software
  25 //  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  26
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29 #include <fcntl.h>
  30 #include <stdlib.h>
  31 #include <stdio.h>
  32 #include <unistd.h>
  33
  34
  35 unsigned char bios[65536];
  36
  37   int
  38 main(int argc, char *argv[])
  39 {
  40   int bios_file;
  41   FILE * org_file;
  42   unsigned org, last_org, offset;
  43   int retval;
  44   unsigned int to_read, index;
  45   double elements, ratio;
  46
  47   if (argc !=3 ) {
  48     fprintf(stderr, "Usage: usage bios-file org-file\n");
  49     exit(1);
  50     }
  51
  52   bios_file = open(argv[1], O_RDONLY);
  53   org_file = fopen(argv[2], "r");
  54
  55   if ( (bios_file<0) | (org_file==NULL) ) {
  56     fprintf(stderr, "problems opening files.\n");
  57     exit(1);
  58     }
  59
  60   printf("files opened OK\n");
  61
  62   to_read = 65536;
  63   index   = 0;
  64   while (to_read > 0) {
  65     retval = read(bios_file, &bios[index], to_read);
  66     if (retval <= 0) {
  67       fprintf(stderr, "problem reading bios file\n");
  68       exit(1);
  69       }
  70     to_read -= retval;
  71     index   += retval;
  72     }
  73   printf("bios file read in OK\n");
  74
  75   last_org = 0;
  76
  77   while (1) {
  78     retval = fscanf(org_file, "0x%x\n", &org);
  79     if (retval <= 0) break;
  80     printf("%04x .. %04x ", last_org, org-1);
  81     for (offset=org-1; offset>last_org; offset--) {
  82       if (bios[offset] != 0) break;
  83       }
  84     if (offset > last_org) {
  85       elements = (1.0 + double(offset) - double(last_org));
  86       }
  87     else {
  88       if (bios[last_org] == 0)
  89         elements = 0.0;
  90       else
  91         elements = 1.0;
  92       }
  93
  94     ratio = elements / (double(org) - double(last_org));
  95     ratio *= 100.0;
  96     printf("%6.2lf\n", ratio);
  97     last_org = org;
  98     }
  99 }