#!/bin/sh
#
# $0 filters the output of objdump to just emit the disassembly of
# a specific function.
#
# usage: $0 FUNCTION [FILE]
#  FUNCTION is the function to filter for (it may be regular expression too)
#  if FILE is ommited it's assumed to be a.out
#

if [ $# -lt 1 ]; then
	echo "usage: $0 FUNCTION [FILE] [OBJDUMP_FLAGS..]"
	exit 1
fi

FUNC="$1"; shift
[ $# -ge 1 -a "$1:0:1" != "-" ] && { FILE="$1"; shift; } || FILE="a.out"

export FUNC
objdump -d "$FILE" "$@" \
| perl -e 'undef $/; $_=<>; /(^.*<$ENV{FUNC}>:\n(^[ \t].+\n)*)/m && print "$1"'