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#!/usr/bin/perl
die "Usage: $0 file\n" unless @ARGV;
open(OTOOL, "otool -l $ARGV[0]|") || die "Can't run otool\n";
$cmd = 0;
$name = "";
$segstart = 0;
$segend = 0;
$ostart = 0xffffffff;
$oend = 0;
while(<OTOOL>) {
chop;
if(/^Load *command /) {
$cmd = 1;
next;
}
next unless $cmd != 0;
if(/^ *cmd *(.*)/ && $cmd == 1) {
if($1 eq "LC_SEGMENT") {
$cmd = 2;
} else {
$cmd = 0;
}
next;
}
if(/^ *segname *(.*)/ && $cmd == 2) {
$name = $1;
next;
}
if(/^ *vmaddr *(.*)/ && $cmd == 2) {
$segstart = hex $1;
next;
}
if(/^ *vmsize *(.*)/ && $cmd == 2) {
$len = hex $1;
$segend = $segstart + $len;
printf("Segment $name, %x - %x\n", $segstart, $segend);
$ostart = $segstart if $segstart < $ostart;
$oend = $segend if $segend > $oend;
$cmd = 0;
}
}
close OTOOL;
$len = $oend - $ostart;
printf("Image from %x to %x (length %x)\n", $ostart, $oend, $len);
exit 0
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