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#!/bin/sh
#
# american fuzzy lop++ - clang assembly normalizer
# ----------------------------------------------
#
# Written by Michal Zalewski
# The idea for this wrapper comes from Ryan Govostes.
#
# Copyright 2013, 2014 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
#
# This 'as' wrapper should allow you to instrument unruly, hand-written
# assembly with afl-as.
#
# Usage:
#
# export AFL_REAL_PATH=/path/to/directory/with/afl-as/
# AFL_PATH=/path/to/this/directory/ make clean all
if [ "$#" -lt "2" ]; then
echo "[-] Error: this utility can't be called directly." 1>&2
exit 1
fi
if [ "$AFL_REAL_PATH" = "" ]; then
echo "[-] Error: AFL_REAL_PATH not set!" 1>&2
exit 1
fi
if [ ! -x "$AFL_REAL_PATH/afl-as" ]; then
echo "[-] Error: AFL_REAL_PATH does not contain the 'afl-as' binary." 1>&2
exit 1
fi
unset __AFL_AS_CMDLINE __AFL_FNAME
while [ ! "$#" = "0" ]; do
if [ "$#" = "1" ]; then
__AFL_FNAME="$1"
else
__AFL_AS_CMDLINE="${__AFL_AS_CMDLINE} $1"
fi
shift
done
test "$TMPDIR" = "" && TMPDIR=/tmp
TMPFILE=`mktemp $TMPDIR/.afl-XXXXXXXXXX.s`
test "$TMPFILE" = "" && exit 1
clang -cc1as -filetype asm -output-asm-variant 0 "${__AFL_FNAME}" >"$TMPFILE"
ERR="$?"
if [ ! "$ERR" = "0" ]; then
rm -f "$TMPFILE"
exit $ERR
fi
"$AFL_REAL_PATH/afl-as" ${__AFL_AS_CMDLINE} "$TMPFILE"
ERR="$?"
rm -f "$TMPFILE"
exit "$ERR"
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