Root/scripts/tags.sh

1#!/bin/sh
2# Generate tags or cscope files
3# Usage tags.sh <mode>
4#
5# mode may be any of: tags, TAGS, cscope
6#
7# Uses the following environment variables:
8# ARCH, SUBARCH, SRCARCH, srctree, src, obj
9
10if [ "$KBUILD_VERBOSE" = "1" ]; then
11    set -x
12fi
13
14# This is a duplicate of RCS_FIND_IGNORE without escaped '()'
15ignore="( -name SCCS -o -name BitKeeper -o -name .svn -o \
16          -name CVS -o -name .pc -o -name .hg -o \
17          -name .git ) \
18          -prune -o"
19
20# Do not use full path if we do not use O=.. builds
21# Use make O=. {tags|cscope}
22# to force full paths for a non-O= build
23if [ "${KBUILD_SRC}" = "" ]; then
24    tree=
25else
26    tree=${srctree}/
27fi
28
29# Find all available archs
30find_all_archs()
31{
32    ALLSOURCE_ARCHS=""
33    for arch in `ls ${tree}arch`; do
34        ALLSOURCE_ARCHS="${ALLSOURCE_ARCHS} "${arch##\/}
35    done
36}
37
38# Detect if ALLSOURCE_ARCHS is set. If not, we assume SRCARCH
39if [ "${ALLSOURCE_ARCHS}" = "" ]; then
40    ALLSOURCE_ARCHS=${SRCARCH}
41elif [ "${ALLSOURCE_ARCHS}" = "all" ]; then
42    find_all_archs
43fi
44
45# find sources in arch/$ARCH
46find_arch_sources()
47{
48    for i in $archincludedir; do
49        prune="$prune -wholename $i -prune -o"
50    done
51    find ${tree}arch/$1 $ignore $prune -name "$2" -print;
52}
53
54# find sources in arch/$1/include
55find_arch_include_sources()
56{
57    include=$(find ${tree}arch/$1/ -name include -type d);
58    if [ -n "$include" ]; then
59        archincludedir="$archincludedir $include"
60        find $include $ignore -name "$2" -print;
61    fi
62}
63
64# find sources in include/
65find_include_sources()
66{
67    find ${tree}include $ignore -name config -prune -o -name "$1" -print;
68}
69
70# find sources in rest of tree
71# we could benefit from a list of dirs to search in here
72find_other_sources()
73{
74    find ${tree}* $ignore \
75         \( -name include -o -name arch -o -name '.tmp_*' \) -prune -o \
76           -name "$1" -print;
77}
78
79find_sources()
80{
81    find_arch_sources $1 "$2"
82}
83
84all_sources()
85{
86    find_arch_include_sources ${SRCARCH} '*.[chS]'
87    if [ ! -z "$archinclude" ]; then
88        find_arch_include_sources $archinclude '*.[chS]'
89    fi
90    find_include_sources '*.[chS]'
91    for arch in $ALLSOURCE_ARCHS
92    do
93        find_sources $arch '*.[chS]'
94    done
95    find_other_sources '*.[chS]'
96}
97
98all_kconfigs()
99{
100    for arch in $ALLSOURCE_ARCHS; do
101        find_sources $arch 'Kconfig*'
102    done
103    find_other_sources 'Kconfig*'
104}
105
106all_defconfigs()
107{
108    find_sources $ALLSOURCE_ARCHS "defconfig"
109}
110
111docscope()
112{
113    (echo \-k; echo \-q; all_sources) > cscope.files
114    cscope -b -f cscope.out
115}
116
117dogtags()
118{
119    all_sources | gtags -f -
120}
121
122exuberant()
123{
124    all_sources | xargs $1 -a \
125    -I __initdata,__exitdata,__acquires,__releases \
126    -I __read_mostly,____cacheline_aligned \
127    -I ____cacheline_aligned_in_smp \
128    -I ____cacheline_internodealigned_in_smp \
129    -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
130    -I DEFINE_TRACE,EXPORT_TRACEPOINT_SYMBOL,EXPORT_TRACEPOINT_SYMBOL_GPL \
131    --extra=+f --c-kinds=+px \
132    --regex-asm='/^ENTRY\(([^)]*)\).*/\1/' \
133    --regex-c='/^SYSCALL_DEFINE[[:digit:]]?\(([^,)]*).*/sys_\1/' \
134    --regex-c++='/^TRACE_EVENT\(([^,)]*).*/trace_\1/' \
135    --regex-c++='/^DEFINE_EVENT\([^,)]*, *([^,)]*).*/trace_\1/'
136
137    all_kconfigs | xargs $1 -a \
138    --langdef=kconfig --language-force=kconfig \
139    --regex-kconfig='/^[[:blank:]]*(menu|)config[[:blank:]]+([[:alnum:]_]+)/\2/'
140
141    all_kconfigs | xargs $1 -a \
142    --langdef=kconfig --language-force=kconfig \
143    --regex-kconfig='/^[[:blank:]]*(menu|)config[[:blank:]]+([[:alnum:]_]+)/CONFIG_\2/'
144
145    all_defconfigs | xargs -r $1 -a \
146    --langdef=dotconfig --language-force=dotconfig \
147    --regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'
148
149}
150
151emacs()
152{
153    all_sources | xargs $1 -a \
154    --regex='/^ENTRY(\([^)]*\)).*/\1/' \
155    --regex='/^SYSCALL_DEFINE[0-9]?(\([^,)]*\).*/sys_\1/' \
156    --regex='/^TRACE_EVENT(\([^,)]*\).*/trace_\1/' \
157    --regex='/^DEFINE_EVENT([^,)]*, *\([^,)]*\).*/trace_\1/'
158
159    all_kconfigs | xargs $1 -a \
160    --regex='/^[ \t]*\(\(menu\)*config\)[ \t]+\([a-zA-Z0-9_]+\)/\3/'
161
162    all_kconfigs | xargs $1 -a \
163    --regex='/^[ \t]*\(\(menu\)*config\)[ \t]+\([a-zA-Z0-9_]+\)/CONFIG_\3/'
164
165    all_defconfigs | xargs -r $1 -a \
166    --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'
167}
168
169xtags()
170{
171    if $1 --version 2>&1 | grep -iq exuberant; then
172        exuberant $1
173    elif $1 --version 2>&1 | grep -iq emacs; then
174        emacs $1
175    else
176        all_sources | xargs $1 -a
177        fi
178}
179
180
181# Support um (which uses SUBARCH)
182if [ "${ARCH}" = "um" ]; then
183    if [ "$SUBARCH" = "i386" ]; then
184        archinclude=x86
185    elif [ "$SUBARCH" = "x86_64" ]; then
186        archinclude=x86
187    else
188        archinclude=${SUBARCH}
189    fi
190fi
191
192case "$1" in
193    "cscope")
194        docscope
195        ;;
196
197    "gtags")
198        dogtags
199        ;;
200
201    "tags")
202        rm -f tags
203        xtags ctags
204        ;;
205
206    "TAGS")
207        rm -f TAGS
208        xtags etags
209        ;;
210esac
211

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