#!/usr/bin/perl -w
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is autosummary.linx.bash code, released
# Oct 10, 2002.
#
# The Initial Developer of the Original Code is Netscape
# Communications Corporation.  Portions created by Netscape are
# Copyright (C) 2002 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s):
#    Simon Fraser <sfraser@netscape.com>
#
# Alternatively, the contents of this file may be used under the
# terms of the GNU Public License (the "GPL"), in which case the
# provisions of the GPL are applicable instead of those above.
# If you wish to allow use of your version of this file only
# under the terms of the GPL and not to allow others to use your
# version of this file under the MPL, indicate your decision by
# deleting the provisions above and replace them with the notice
# and other provisions required by the GPL.  If you do not delete
# the provisions above, a recipient may use your version of this
# file under either the MPL or the GPL.
#

use strict;

#
# A wrapper for nm that produces output listing symbol size.
#
my($prev_addr) = 0;
my($prev_module) = "";
my($prev_kind) = "";
my($prev_symbol) = "";

open(NM_OUTPUT, "nm -fnol $ARGV[0] | c++filt |") or die "nm failed to run on $ARGV[0]\n";
while (<NM_OUTPUT>)
{
  my($line) = $_;
  chomp($line);
  
  if ($line =~ /^([^:]+):([0-9a-f]{8}) (\w) (.+)$/)
  {
    my($module) = $1;
    my($addr)   = $2;
    my($kind)   = $3;
    my($symbol) = $4;
  
    # we expect the input to have been piped through c++filt to
    # demangle symbols. For some reason, it doesn't always demangle
    # all of them, so push still-mangled symbols back through c++filt again.
    if ($symbol =~ /^(_[_Z].+)/)
    {
      # warn "Trying again to unmangle $1\n";
      $symbol = `c++filt '$1'`;
      chomp($symbol);
      # warn "Unmangling again to $symbol\n";
    }

    my($prev_size) = hex($addr) - hex($prev_addr);
    # print "Outputting line $line\n";

    # always print one behind, because only now do we know its size
    if ($prev_module ne "") {
      printf "%s:%08x %s %s\n", $prev_module, $prev_size, $prev_kind, $prev_symbol;
    }
      
    $prev_addr   = $addr;
    $prev_module = $module;
    $prev_kind   = $kind;
    $prev_symbol = $symbol;
  }
  else
  {
    # warn "   Discaring line $line\n";
  }
}

# we don't know how big the last symbol is, so always show 4.
if ($prev_module ne "") {
  printf "%s:%08x %s %s\n", $prev_module, 4, $prev_kind, $prev_symbol;
}