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#!/bin/sh
# $FreeBSD$
# Grrr, this should use stdin and stdout, but is encrufted for compatibility.
usage() {
echo "usage: genassym [-o outfile] objfile"
exit 1
}
outfile=/dev/stdout
while getopts "o:" option
do
case "$option" in
o) outfile="$OPTARG";;
*) usage;;
esac
done
shift $(($OPTIND - 1))
case $# in
1) ;;
*) usage;;
esac
${NM:='nm'} "$1" | awk '
/ C .*sign$/ {
sign = substr($1, length($1) - 3, 4)
sub("^0*", "", sign)
if (sign != "")
sign = "-"
}
/ C .*w0$/ {
w0 = substr($1, length($1) - 3, 4)
}
/ C .*w1$/ {
w1 = substr($1, length($1) - 3, 4)
}
/ C .*w2$/ {
w2 = substr($1, length($1) - 3, 4)
}
/ C .*w3$/ {
w3 = substr($1, length($1) - 3, 4)
w = w3 w2 w1 w0
sub("^0*", "", w)
if (w == "")
w = "0"
sub("w3$", "", $3)
# This still has minor problems representing INT_MIN, etc. E.g.,
# with 32-bit 2''s complement ints, this prints -0x80000000, which
# has the wrong type (unsigned int).
printf("#define\t%s\t%s0x%s\n", $3, sign, w)
}
' 3>"$outfile" >&3 3>&-
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