kernxref.sh revision 100354 
1:
2#
3# ----------------------------------------------------------------------------
4# "THE BEER-WARE LICENSE" (Revision 42):
5# <phk@FreeBSD.org> wrote this file.  As long as you retain this notice you
6# can do whatever you want with this stuff. If we meet some day, and you think
7# this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
8# ----------------------------------------------------------------------------
9#
10# $FreeBSD: head/tools/tools/kernxref/kernxref.sh 100354 2002-07-19 10:29:07Z phk $
11#
12# This shellscript will make a cross reference of the symbols of the LINT 
13# kernel.
14
15COMPILEDIR=/sys/i386/compile
16KERNELNAME=LINT
17
18cd ${COMPILEDIR}/${KERNELNAME}
19if file vers.o | grep -q ELF; then
20	OBJFORMAT=elf;
21else
22	OBJFORMAT=aout;
23fi
24
25OBJFORMAT=${OBJFORMAT} nm -gon `echo *.o /boot/kernel/*.ko	\
26	| tr ' ' '\012'					\
27	| egrep -v '(aicasm|genassym)'`			\
28	| tr : ' ' | awk '
29NF > 1	{
30	if (length($2) == 8) {
31		$2 = $3
32		$3 = $4
33	}
34	if ($2 == "t") 
35		next
36	if ($2 == "F")
37		next
38	nm[$3]++
39	if ($2 == "U") {
40		ref[$3]=ref[$3]" "$1
41	} else if ($2 == "T" || $2 == "D" || $2 == "A" || $2 == "R") {
42		if (def[$3] != "")
43			def[$3]=def[$3]" "$1
44		else
45			def[$3]=$1
46	} else if ($2 == "?") {
47		if (def[$3] == "S")
48			i++
49		else if (def[$3] != "")
50			def[$3]=def[$3]",S"
51		else
52			def[$3]="S"
53		ref[$3]=ref[$3]" "$1
54	} else if ($2 == "C") {
55		if (def[$3] == $2)
56			i++
57		else if (def[$3] == "")
58			def[$3]=$1
59		else
60			ref[$3]=ref[$3]" "$1
61	} else {
62		print ">>>",$0
63	}
64	}
65END	{
66	for (i in nm) {
67		printf "%s {%s} %s\n",i,def[i],ref[i]
68	}
69	}
70' | sort | awk '
71	{
72	if ($2 == "{S}")
73		$2 = "<Linker set>"
74	if (length($3) == 0) {
75		printf "%-30s %3d %s\n\tUNREF\n",$1,0, $2
76		N1++
77	} else if ($2 == "{}") {
78		printf "%-30s %3d {UNDEF}\n",$1, NF-2
79		N2++
80	} else {
81		printf "%-30s %3d %s",$1,NF-2,$2
82		p = 80;
83		for (i = 3 ; i <= NF; i++) {
84			if (p+length ($i)+1 > 78) {
85				printf "\n\t%s", $i
86				p = 7;
87			} else {
88				printf " %s", $i
89			}
90			p += 1 + length ($i)
91		}
92		printf "\n"
93		N3++
94		if (NF-2 == 1) 
95			N4++
96		if (NF-2 == 2)
97			N5++
98	}
99	}
100END	{
101	printf "Total symbols: %5d\n",N1+N2+N3
102	printf "unref symbols: %5d\n",N1
103	printf "undef symbols: %5d\n",N2
104	printf "1 ref symbols: %5d\n",N4
105	printf "2 ref symbols: %5d\n",N5
106	}
107'
108