1 files changed, 69 insertions, 0 deletions
diff --git a/sys/kern/genassym.sh b/sys/kern/genassym.sh
new file mode 100644
index 0000000..1cbc32b
--- /dev/null
+++ b/sys/kern/genassym.sh
@@ -0,0 +1,69 @@
+#!/bin/sh
+# $FreeBSD$
+
+usage()
+{
+	echo "usage: genassym [-o outfile] objfile"
+	exit 1
+}
+
+
+work()
+{
+	${NM:='nm'} "$1" | ${AWK:='awk'} '
+	/ C .*sign$/ {
+		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", $3, sign, w)
+	} '
+}
+
+
+#
+#MAIN PROGGRAM
+#
+use_outfile="no"
+while getopts "o:" option
+do
+	case "$option" in
+	o)	outfile="$OPTARG"
+		use_outfile="yes";;
+	*)	usage;;
+	esac
+done
+shift $(($OPTIND - 1))
+case $# in
+1)	;;
+*)	usage;;
+esac
+
+if [ "$use_outfile" = "yes" ]
+then
+	work $1  3>"$outfile" >&3 3>&-
+else
+	work $1
+fi
+