1 files changed, 78 insertions, 0 deletions
diff --git a/bin/ios-mapfile-statistics b/bin/ios-mapfile-statistics
new file mode 100755
index 0000000000..07f3f0aa68
--- /dev/null
+++ b/bin/ios-mapfile-statistics
@@ -0,0 +1,78 @@
+#!/usr/bin/perl -w
+
+use strict;
+
+use Getopt::Std;
+$Getopt::Std::STANDARD_HELP_VERSION++;
+
+my %args;
+
+getopts('f:s', \%args);
+
+sub VERSION_MESSAGE {
+  # Nothing
+}
+
+sub HELP_MESSAGE {
+  print <<EOS
+This program parses a linker map file, especially one produced when linking an iOS executable.
+
+Input is read from a map file provided as command-line argument
+
+By default a list of libraries used and the size of code and data
+linked in from each library is printed, in reverse order of size.
+
+The following options are available:
+-s                Print a list of symbols instead.
+-f 'filter'       Filter which libraries are handled. The filter can be
+                  a regular expression, typically several library names
+                  combined with the '|' operator. Makes sense only when
+                  -s is used too.
+EOS
+}
+
+die "The -f switch makes sense only if -s is also used\n" if defined($args{'f'}) && !defined($args{'s'});
+
+die "Please provide one map file name\n" if !defined($ARGV[0]);
+
+die "Just one argument please\n" if defined($ARGV[1]);
+
+my $state = 0;
+my %libofnumber;
+my %sizeoflib;
+my %sizeofsym;
+
+open(INPUT, '<', $ARGV[0]) || die "Could not open $ARGV[0]: $!\n";
+
+while (<INPUT>) {
+  if ($state == 0 && m!^# Object files:!) {
+    $state = 1;
+  } elsif ($state == 1 && m!^\[ *([0-9]+)\] .*/([-_a-z0-9]+\.a)\(.*!i) {
+    $libofnumber{$1} = $2;
+  } elsif ($state == 1 && m!^# Sections:!) {
+    $state = 2;
+  } elsif ($state == 2 && m!^# Address\s+Size\s+File\s+Name!) {
+    $state = 3;
+  } elsif ($state == 3 && m!^0x[0-9A-F]+\s+(0x[0-9A-F]+)\s+\[ *([0-9]+)\] (.*)!) {
+    my ($size,$libnum,$symbol) = ($1, $2, $3);
+    if (defined($libofnumber{$libnum})) {
+      $sizeoflib{$libofnumber{$libnum}} += hex($size);
+      if (!defined($args{'f'}) || $libofnumber{$libnum} =~ /$args{'f'}/) {
+	  $sizeofsym{$symbol} = hex($size);
+	}
+    }
+  }
+}
+
+if ($args{'s'}) {
+  # Print symbols in reverse size order
+  foreach (sort { $sizeofsym{$b} <=> $sizeofsym{$a} } keys(%sizeofsym)) {
+    print $_, ": ", $sizeofsym{$_}, "\n";
+  }
+} else {
+  # Print libraries in reverse size order
+  foreach (sort { $sizeoflib{$b} <=> $sizeoflib{$a} } keys(%sizeoflib)) {
+    print $_, ": ", $sizeoflib{$_}, "\n";
+  }
+}
+