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41 lines
1.5 KiB
Perl
Executable File
41 lines
1.5 KiB
Perl
Executable File
#!/usr/bin/perl -w
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use strict;
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use warnings;
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# Sort the symbol table portion of the output of objdump -ht by
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# section, then by symbol value, then by size. Used to enhance the
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# linker maps produced by "make bin/%.map" by also showing the values
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# of all non-global symbols.
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my %section_idx = ( "*ABS*" => "." );
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my %lines;
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while ( <> ) {
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if ( /^\s+(\d+)\s+([\.\*]\S+)\s+[0-9a-fA-F]+\s+[0-9a-fA-F]/ ) {
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# It's a header line containing a section definition; extract the
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# section index and store it. Also print the header line.
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print;
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( my $index, my $section ) = ( $1, $2 );
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$section_idx{$section} = sprintf ( "%02d", $index );
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} elsif ( /^([0-9a-fA-F]+)\s.*?\s([\.\*]\S+)\s+([0-9a-fA-F]+)\s+(\S+)/ ) {
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# It's a symbol line - store it in the hash, indexed by
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# "<section_index>:<value>:<size>:<end_tag>". <end_tag> is "0" if
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# the symbol name is of the form xxx_end, "1" otherwise; this is
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# done so that table end markers show up before any other symbols
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# with the same value.
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( my $value, my $section, my $size, my $name ) = ( $1, $2, $3, $4 );
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die "Unrecognised section \"$section\"\n"
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unless exists $section_idx{$section};
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my $section_idx = $section_idx{$section};
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my $end = ( $name =~ /_end$/ ) ? "0" : "1";
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my $key = $section_idx.":".$value.":".$size.":".$end;
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$lines{$key} ||= '';
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$lines{$key} .= $_;
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} else {
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# It's a generic header line: just print it.
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print;
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}
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}
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print $lines{$_} foreach sort keys %lines;
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