linux/scripts/tags.sh
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   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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