1 files changed, 99 insertions, 0 deletions
diff --git a/bochs/bios/usage.cc b/bochs/bios/usage.cc
new file mode 100644
index 0000000..a99248a
--- /dev/null
+++ b/bochs/bios/usage.cc
@@ -0,0 +1,99 @@
+/////////////////////////////////////////////////////////////////////////
+// $Id$
+/////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2001  MandrakeSoft S.A.
+//
+//    MandrakeSoft S.A.
+//    43, rue d'Aboukir
+//    75002 Paris - France
+//    http://www.linux-mandrake.com/
+//    http://www.mandrakesoft.com/
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2 of the License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+
+unsigned char bios[65536];
+
+  int
+main(int argc, char *argv[])
+{
+  int bios_file;
+  FILE * org_file;
+  unsigned org, last_org, offset;
+  int retval;
+  unsigned int to_read, index;
+  double elements, ratio;
+
+  if (argc !=3 ) {
+    fprintf(stderr, "Usage: usage bios-file org-file\n");
+    exit(1);
+    }
+
+  bios_file = open(argv[1], O_RDONLY);
+  org_file = fopen(argv[2], "r");
+
+  if ( (bios_file<0) | (org_file==NULL) ) {
+    fprintf(stderr, "problems opening files.\n");
+    exit(1);
+    }
+
+  printf("files opened OK\n");
+
+  to_read = 65536;
+  index   = 0;
+  while (to_read > 0) {
+    retval = read(bios_file, &bios[index], to_read);
+    if (retval <= 0) {
+      fprintf(stderr, "problem reading bios file\n");
+      exit(1);
+      }
+    to_read -= retval;
+    index   += retval;
+    }
+  printf("bios file read in OK\n");
+
+  last_org = 0;
+
+  while (1) {
+    retval = fscanf(org_file, "0x%x\n", &org);
+    if (retval <= 0) break;
+    printf("%04x .. %04x ", last_org, org-1);
+    for (offset=org-1; offset>last_org; offset--) {
+      if (bios[offset] != 0) break;
+      }
+    if (offset > last_org) {
+      elements = (1.0 + double(offset) - double(last_org));
+      }
+    else {
+      if (bios[last_org] == 0)
+        elements = 0.0;
+      else
+        elements = 1.0;
+      }
+
+    ratio = elements / (double(org) - double(last_org));
+    ratio *= 100.0;
+    printf("%6.2lf\n", ratio);
+    last_org = org;
+    }
+}