tools/ovl_offset.pl

   1 #!/usr/bin/perl
   2
   3 # Calculate the highest possible location for an overlay based
   4 # on a reference map file (.refmap)
   5
   6 sub map_scan {
   7     my ($map) = @_;
   8     my $ramstart = -1, $ramsize = -1, $startaddr = -1, $endaddr = -1;
   9     open (MAP, "<$map");
  10     while (<MAP>) {
  11         if ($_ =~ /^PLUGIN_RAM +0x([0-9a-f]+) +0x([0-9a-f]+)$/) {
  12             $ramstart = hex($1);
  13             $ramsize = hex($2);
  14         }
  15         elsif ($_ =~ / +0x([0-9a-f]+) +_?plugin_start_addr = ./) {
  16             $startaddr = hex($1);
  17         }
  18         elsif ($_ =~ / +0x([0-9a-f]+) +_?plugin_end_addr = ./) {
  19             $endaddr = hex($1);
  20         }
  21     }
  22     close (MAP);
  23     if ($ramstart < 0 || $ramsize < 0 || $startaddr < 0 || $endaddr < 0
  24         || $ramstart != $startaddr) {
  25         printf "Could not analyze map file.\n";
  26         exit 1;
  27     }
  28     return $ramstart + $ramsize - $endaddr;
  29 }
  30
  31 printf map_scan($ARGV[0]) & ~0xf;