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
  10 if [ "$KBUILD_VERBOSE" = "1" ]; then
  11         set -x
  12 fi
  13
  14 # This is a duplicate of RCS_FIND_IGNORE without escaped '()'
  15 ignore="( -name SCCS -o -name BitKeeper -o -name .svn -o \
  16           -name CVS  -o -name .pc       -o -name .hg  -o \
  17           -name .git )                                   \
  18           -prune -o"
  19
  20 # Do not use full path if we do not use O=.. builds
  21 # Use make O=. {tags|cscope}
  22 # to force full paths for a non-O= build
  23 if [ "${KBUILD_SRC}" = "" ]; then
  24         tree=
  25 else
  26         tree=${srctree}/
  27 fi
  28
  29 # Find all available archs
  30 find_all_archs()
  31 {
  32         ALLSOURCE_ARCHS=""
  33         for arch in `ls ${tree}arch`; do
  34                 ALLSOURCE_ARCHS="${ALLSOURCE_ARCHS} "${arch##\/}
  35         done
  36 }
  37
  38 # Detect if ALLSOURCE_ARCHS is set. If not, we assume SRCARCH
  39 if [ "${ALLSOURCE_ARCHS}" = "" ]; then
  40         ALLSOURCE_ARCHS=${SRCARCH}
  41 elif [ "${ALLSOURCE_ARCHS}" = "all" ]; then
  42         find_all_archs
  43 fi
  44
  45 # find sources in arch/$ARCH
  46 find_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/$1/include
  55 find_arch_include_sources()
  56 {
  57         include=$(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/
  65 find_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
  72 find_other_sources()
  73 {
  74         find ${tree}* $ignore \
  75              \( -name include -o -name arch -o -name '.tmp_*' \) -prune -o \
  76                -name "$1" -print;
  77 }
  78
  79 find_sources()
  80 {
  81         find_arch_sources $1 "$2"
  82 }
  83
  84 all_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
  98 all_kconfigs()
  99 {
 100         for arch in $ALLSOURCE_ARCHS; do
 101                 find_sources $arch 'Kconfig*'
 102         done
 103         find_other_sources 'Kconfig*'
 104 }
 105
 106 all_defconfigs()
 107 {
 108         find_sources $ALLSOURCE_ARCHS "defconfig"
 109 }
 110
 111 docscope()
 112 {
 113         (echo \-k; echo \-q; all_sources) > cscope.files
 114         cscope -b -f cscope.out
 115 }
 116
 117 exuberant()
 118 {
 119         all_sources | xargs $1 -a                               \
 120         -I __initdata,__exitdata,__acquires,__releases          \
 121         -I __read_mostly,____cacheline_aligned                  \
 122         -I ____cacheline_aligned_in_smp                         \
 123         -I ____cacheline_internodealigned_in_smp                \
 124         -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL                      \
 125         -I DEFINE_TRACE,EXPORT_TRACEPOINT_SYMBOL,EXPORT_TRACEPOINT_SYMBOL_GPL \
 126         --extra=+f --c-kinds=-px                                \
 127         --regex-asm='/^ENTRY\(([^)]*)\).*/\1/'                  \
 128         --regex-c='/^SYSCALL_DEFINE[[:digit:]]?\(([^,)]*).*/sys_\1/'
 129
 130         all_kconfigs | xargs $1 -a                              \
 131         --langdef=kconfig --language-force=kconfig              \
 132         --regex-kconfig='/^[[:blank:]]*(menu|)config[[:blank:]]+([[:alnum:]_]+)/\2/'
 133
 134         all_kconfigs | xargs $1 -a                              \
 135         --langdef=kconfig --language-force=kconfig              \
 136         --regex-kconfig='/^[[:blank:]]*(menu|)config[[:blank:]]+([[:alnum:]_]+)/CONFIG_\2/'
 137
 138         all_defconfigs | xargs -r $1 -a                         \
 139         --langdef=dotconfig --language-force=dotconfig          \
 140         --regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'
 141
 142 }
 143
 144 emacs()
 145 {
 146         all_sources | xargs $1 -a                               \
 147         --regex='/^ENTRY(\([^)]*\)).*/\1/'                      \
 148         --regex='/^SYSCALL_DEFINE[0-9]?(\([^,)]*\).*/sys_\1/'
 149
 150         all_kconfigs | xargs $1 -a                              \
 151         --regex='/^[ \t]*\(\(menu\)*config\)[ \t]+\([a-zA-Z0-9_]+\)/\3/'
 152
 153         all_kconfigs | xargs $1 -a                              \
 154         --regex='/^[ \t]*\(\(menu\)*config\)[ \t]+\([a-zA-Z0-9_]+\)/CONFIG_\3/'
 155
 156         all_defconfigs | xargs -r $1 -a                         \
 157         --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'
 158 }
 159
 160 xtags()
 161 {
 162         if $1 --version 2>&1 | grep -iq exuberant; then
 163                 exuberant $1
 164         elif $1 --version 2>&1 | grep -iq emacs; then
 165                 emacs $1
 166         else
 167                 all_sources | xargs $1 -a
 168         fi
 169 }
 170
 171
 172 # Support um (which uses SUBARCH)
 173 if [ "${ARCH}" = "um" ]; then
 174         if [ "$SUBARCH" = "i386" ]; then
 175                 archinclude=x86
 176         elif [ "$SUBARCH" = "x86_64" ]; then
 177                 archinclude=x86
 178         else
 179                 archinclude=${SUBARCH}
 180         fi
 181 fi
 182
 183 case "$1" in
 184         "cscope")
 185                 docscope
 186                 ;;
 187
 188         "tags")
 189                 rm -f tags
 190                 xtags ctags
 191                 ;;
 192
 193         "TAGS")
 194                 rm -f TAGS
 195                 xtags etags
 196                 ;;
 197 esac