gpxe/src/util/sortobjdump.pl

   1 #!/usr/bin/perl -w
   2
   3 use strict;
   4 use warnings;
   5
   6 # Sort the symbol table portion of the output of objdump -ht by
   7 # section, then by symbol value, then by size.  Used to enhance the
   8 # linker maps produced by "make bin/%.map" by also showing the values
   9 # of all non-global symbols.
  10
  11 my %section_idx = ( "*ABS*" => "." );
  12 my %lines;
  13 while ( <> ) {
  14   if ( /^\s+(\d+)\s+([\.\*]\S+)\s+[0-9a-fA-F]+\s+[0-9a-fA-F]/ ) {
  15     # It's a header line containing a section definition; extract the
  16     # section index and store it.  Also print the header line.
  17     print;
  18     ( my $index, my $section ) = ( $1, $2 );
  19     $section_idx{$section} = sprintf ( "%02d", $index );
  20   } elsif ( /^([0-9a-fA-F]+)\s.*?\s([\.\*]\S+)\s+([0-9a-fA-F]+)\s+(\S+)/ ) {
  21     # It's a symbol line - store it in the hash, indexed by
  22     # "<section_index>:<value>:<size>:<end_tag>".  <end_tag> is "0" if
  23     # the symbol name is of the form xxx_end, "1" otherwise; this is
  24     # done so that table end markers show up before any other symbols
  25     # with the same value.
  26     ( my $value, my $section, my $size, my $name ) = ( $1, $2, $3, $4 );
  27     die "Unrecognised section \"$section\"\n"
  28         unless exists $section_idx{$section};
  29     my $section_idx = $section_idx{$section};
  30     my $end = ( $name =~ /_end$/ ) ? "0" : "1";
  31     my $key = $section_idx.":".$value.":".$size.":".$end;
  32     $lines{$key} ||= '';
  33     $lines{$key} .= $_;
  34   } else {
  35     # It's a generic header line: just print it.
  36     print;
  37   }
  38 }
  39
  40 print $lines{$_} foreach sort keys %lines;