scripts/tags.sh

   1 #!/bin/bash
   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 [ "$KBUILD_VERBOSE" = "1" ]; then
  11         set -x
  12 fi
  13
  14 # RCS_FIND_IGNORE has escaped ()s -- remove them.
  15 ignore="$(echo "$RCS_FIND_IGNORE" | sed 's|\\||g' )"
  16 # tags and cscope files should also ignore MODVERSION *.mod.c files
  17 ignore="$ignore ( -name *.mod.c ) -prune -o"
  18
  19 # Do not use full path if we do not use O=.. builds
  20 # Use make O=. {tags|cscope}
  21 # to force full paths for a non-O= build
  22 if [ "${KBUILD_SRC}" = "" ]; then
  23         tree=
  24 else
  25         tree=${srctree}/
  26 fi
  27
  28 # ignore userspace tools
  29 ignore="$ignore ( -path ${tree}tools ) -prune -o"
  30
  31 # Find all available archs
  32 find_all_archs()
  33 {
  34         ALLSOURCE_ARCHS=""
  35         for arch in `ls ${tree}arch`; do
  36                 ALLSOURCE_ARCHS="${ALLSOURCE_ARCHS} "${arch##\/}
  37         done
  38 }
  39
  40 # Detect if ALLSOURCE_ARCHS is set. If not, we assume SRCARCH
  41 if [ "${ALLSOURCE_ARCHS}" = "" ]; then
  42         ALLSOURCE_ARCHS=${SRCARCH}
  43 elif [ "${ALLSOURCE_ARCHS}" = "all" ]; then
  44         find_all_archs
  45 fi
  46
  47 # find sources in arch/$ARCH
  48 find_arch_sources()
  49 {
  50         for i in $archincludedir; do
  51                 prune="$prune -wholename $i -prune -o"
  52         done
  53         find ${tree}arch/$1 $ignore $subarchprune $prune -name "$2" \
  54                 -not -type l -print;
  55 }
  56
  57 # find sources in arch/$1/include
  58 find_arch_include_sources()
  59 {
  60         include=$(find ${tree}arch/$1/ $subarchprune \
  61                                         -name include -type d -print);
  62         if [ -n "$include" ]; then
  63                 archincludedir="$archincludedir $include"
  64                 find $include $ignore -name "$2" -not -type l -print;
  65         fi
  66 }
  67
  68 # find sources in include/
  69 find_include_sources()
  70 {
  71         find ${tree}include $ignore -name config -prune -o -name "$1" \
  72                 -not -type l -print;
  73 }
  74
  75 # find sources in rest of tree
  76 # we could benefit from a list of dirs to search in here
  77 find_other_sources()
  78 {
  79         find ${tree}* $ignore \
  80              \( -name include -o -name arch -o -name '.tmp_*' \) -prune -o \
  81                -name "$1" -not -type l -print;
  82 }
  83
  84 find_sources()
  85 {
  86         find_arch_sources $1 "$2"
  87 }
  88
  89 all_sources()
  90 {
  91         find_arch_include_sources ${SRCARCH} '*.[chS]'
  92         if [ ! -z "$archinclude" ]; then
  93                 find_arch_include_sources $archinclude '*.[chS]'
  94         fi
  95         find_include_sources '*.[chS]'
  96         for arch in $ALLSOURCE_ARCHS
  97         do
  98                 find_sources $arch '*.[chS]'
  99         done
 100         find_other_sources '*.[chS]'
 101 }
 102
 103 all_compiled_sources()
 104 {
 105         for i in $(all_sources); do
 106                 case "$i" in
 107                         *.[cS])
 108                                 j=${i/\.[cS]/\.o}
 109                                 j="${j#$tree}"
 110                                 if [ -e $j ]; then
 111                                         echo $i
 112                                 fi
 113                                 ;;
 114                         *)
 115                                 echo $i
 116                                 ;;
 117                 esac
 118         done
 119 }
 120
 121 all_target_sources()
 122 {
 123         if [ -n "$COMPILED_SOURCE" ]; then
 124                 all_compiled_sources
 125         else
 126                 all_sources
 127         fi
 128 }
 129
 130 all_kconfigs()
 131 {
 132         for arch in $ALLSOURCE_ARCHS; do
 133                 find_sources $arch 'Kconfig*'
 134         done
 135         find_other_sources 'Kconfig*'
 136 }
 137
 138 docscope()
 139 {
 140         (echo \-k; echo \-q; all_target_sources) > cscope.files
 141         cscope -b -f cscope.out
 142 }
 143
 144 dogtags()
 145 {
 146         all_target_sources | gtags -i -f -
 147 }
 148
 149 # Basic regular expressions with an optional /kind-spec/ for ctags and
 150 # the following limitations:
 151 # - No regex modifiers
 152 # - Use \{0,1\} instead of \?, because etags expects an unescaped ?
 153 # - \s is not working with etags, use a space or [ \t]
 154 # - \w works, but does not match underscores in etags
 155 # - etags regular expressions have to match at the start of a line;
 156 #   a ^[^#] is prepended by setup_regex unless an anchor is already present
 157 regex_asm=(
 158         '/^\(ENTRY\|_GLOBAL\)(\([[:alnum:]_\\]*\)).*/\2/'
 159 )
 160 regex_c=(
 161         '/^SYSCALL_DEFINE[0-9](\([[:alnum:]_]*\).*/sys_\1/'
 162         '/^COMPAT_SYSCALL_DEFINE[0-9](\([[:alnum:]_]*\).*/compat_sys_\1/'
 163         '/^TRACE_EVENT(\([[:alnum:]_]*\).*/trace_\1/'
 164         '/^TRACE_EVENT(\([[:alnum:]_]*\).*/trace_\1_rcuidle/'
 165         '/^DEFINE_EVENT([^,)]*, *\([[:alnum:]_]*\).*/trace_\1/'
 166         '/^DEFINE_EVENT([^,)]*, *\([[:alnum:]_]*\).*/trace_\1_rcuidle/'
 167         '/^DEFINE_INSN_CACHE_OPS(\([[:alnum:]_]*\).*/get_\1_slot/'
 168         '/^DEFINE_INSN_CACHE_OPS(\([[:alnum:]_]*\).*/free_\1_slot/'
 169         '/^PAGEFLAG(\([[:alnum:]_]*\).*/Page\1/'
 170         '/^PAGEFLAG(\([[:alnum:]_]*\).*/SetPage\1/'
 171         '/^PAGEFLAG(\([[:alnum:]_]*\).*/ClearPage\1/'
 172         '/^TESTSETFLAG(\([[:alnum:]_]*\).*/TestSetPage\1/'
 173         '/^TESTPAGEFLAG(\([[:alnum:]_]*\).*/Page\1/'
 174         '/^SETPAGEFLAG(\([[:alnum:]_]*\).*/SetPage\1/'
 175         '/\<__SETPAGEFLAG(\([[:alnum:]_]*\).*/__SetPage\1/'
 176         '/\<TESTCLEARFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
 177         '/\<__TESTCLEARFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
 178         '/\<CLEARPAGEFLAG(\([[:alnum:]_]*\).*/ClearPage\1/'
 179         '/\<__CLEARPAGEFLAG(\([[:alnum:]_]*\).*/__ClearPage\1/'
 180         '/^__PAGEFLAG(\([[:alnum:]_]*\).*/__SetPage\1/'
 181         '/^__PAGEFLAG(\([[:alnum:]_]*\).*/__ClearPage\1/'
 182         '/^PAGEFLAG_FALSE(\([[:alnum:]_]*\).*/Page\1/'
 183         '/\<TESTSCFLAG(\([[:alnum:]_]*\).*/TestSetPage\1/'
 184         '/\<TESTSCFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
 185         '/\<SETPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/SetPage\1/'
 186         '/\<CLEARPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/ClearPage\1/'
 187         '/\<__CLEARPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/__ClearPage\1/'
 188         '/\<TESTCLEARFLAG_FALSE(\([[:alnum:]_]*\).*/TestClearPage\1/'
 189         '/^PAGE_MAPCOUNT_OPS(\([[:alnum:]_]*\).*/Page\1/'
 190         '/^PAGE_MAPCOUNT_OPS(\([[:alnum:]_]*\).*/__SetPage\1/'
 191         '/^PAGE_MAPCOUNT_OPS(\([[:alnum:]_]*\).*/__ClearPage\1/'
 192         '/^TASK_PFA_TEST([^,]*, *\([[:alnum:]_]*\))/task_\1/'
 193         '/^TASK_PFA_SET([^,]*, *\([[:alnum:]_]*\))/task_set_\1/'
 194         '/^TASK_PFA_CLEAR([^,]*, *\([[:alnum:]_]*\))/task_clear_\1/'
 195         '/^DEF_MMIO_\(IN\|OUT\)_[XD](\([[:alnum:]_]*\),[^)]*)/\2/'
 196         '/^DEBUGGER_BOILERPLATE(\([[:alnum:]_]*\))/\1/'
 197         '/^DEF_PCI_AC_\(\|NO\)RET(\([[:alnum:]_]*\).*/\2/'
 198         '/^PCI_OP_READ(\(\w*\).*[1-4])/pci_bus_read_config_\1/'
 199         '/^PCI_OP_WRITE(\(\w*\).*[1-4])/pci_bus_write_config_\1/'
 200         '/\<DEFINE_\(MUTEX\|SEMAPHORE\|SPINLOCK\)(\([[:alnum:]_]*\)/\2/v/'
 201         '/\<DEFINE_\(RAW_SPINLOCK\|RWLOCK\|SEQLOCK\)(\([[:alnum:]_]*\)/\2/v/'
 202         '/\<DECLARE_\(RWSEM\|COMPLETION\)(\([[:alnum:]_]\+\)/\2/v/'
 203         '/\<DECLARE_BITMAP(\([[:alnum:]_]*\)/\1/v/'
 204         '/\(^\|\s\)\(\|L\|H\)LIST_HEAD(\([[:alnum:]_]*\)/\3/v/'
 205         '/\(^\|\s\)RADIX_TREE(\([[:alnum:]_]*\)/\2/v/'
 206         '/\<DEFINE_PER_CPU([^,]*, *\([[:alnum:]_]*\)/\1/v/'
 207         '/\<DEFINE_PER_CPU_SHARED_ALIGNED([^,]*, *\([[:alnum:]_]*\)/\1/v/'
 208         '/\<DECLARE_WAIT_QUEUE_HEAD(\([[:alnum:]_]*\)/\1/v/'
 209         '/\<DECLARE_\(TASKLET\|WORK\|DELAYED_WORK\)(\([[:alnum:]_]*\)/\2/v/'
 210         '/\(^\s\)OFFSET(\([[:alnum:]_]*\)/\2/v/'
 211         '/\(^\s\)DEFINE(\([[:alnum:]_]*\)/\2/v/'
 212         '/\<DEFINE_HASHTABLE(\([[:alnum:]_]*\)/\1/v/'
 213 )
 214 regex_kconfig=(
 215         '/^[[:blank:]]*\(menu\|\)config[[:blank:]]\+\([[:alnum:]_]\+\)/\2/'
 216         '/^[[:blank:]]*\(menu\|\)config[[:blank:]]\+\([[:alnum:]_]\+\)/CONFIG_\2/'
 217 )
 218 setup_regex()
 219 {
 220         local mode=$1 lang tmp=() r
 221         shift
 222
 223         regex=()
 224         for lang; do
 225                 case "$lang" in
 226                 asm)       tmp=("${regex_asm[@]}") ;;
 227                 c)         tmp=("${regex_c[@]}") ;;
 228                 kconfig)   tmp=("${regex_kconfig[@]}") ;;
 229                 esac
 230                 for r in "${tmp[@]}"; do
 231                         if test "$mode" = "exuberant"; then
 232                                 regex[${#regex[@]}]="--regex-$lang=${r}b"
 233                         else
 234                                 # Remove ctags /kind-spec/
 235                                 case "$r" in
 236                                 /*/*/?/)
 237                                         r=${r%?/}
 238                                 esac
 239                                 # Prepend ^[^#] unless already anchored
 240                                 case "$r" in
 241                                 /^*) ;;
 242                                 *)
 243                                         r="/^[^#]*${r#/}"
 244                                 esac
 245                                 regex[${#regex[@]}]="--regex=$r"
 246                         fi
 247                 done
 248         done
 249 }
 250
 251 exuberant()
 252 {
 253         setup_regex exuberant asm c
 254         all_target_sources | xargs $1 -a                        \
 255         -I __initdata,__exitdata,__initconst,                   \
 256         -I __initdata_memblock                                  \
 257         -I __refdata,__attribute,__maybe_unused,__always_unused \
 258         -I __acquires,__releases,__deprecated                   \
 259         -I __read_mostly,__aligned,____cacheline_aligned        \
 260         -I ____cacheline_aligned_in_smp                         \
 261         -I __cacheline_aligned,__cacheline_aligned_in_smp       \
 262         -I ____cacheline_internodealigned_in_smp                \
 263         -I __used,__packed,__packed2__,__must_check,__must_hold \
 264         -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL,ACPI_EXPORT_SYMBOL   \
 265         -I DEFINE_TRACE,EXPORT_TRACEPOINT_SYMBOL,EXPORT_TRACEPOINT_SYMBOL_GPL \
 266         -I static,const                                         \
 267         --extra=+fq --c-kinds=+px --fields=+iaS --langmap=c:+.h \
 268         "${regex[@]}"
 269
 270         setup_regex exuberant kconfig
 271         all_kconfigs | xargs $1 -a                              \
 272         --langdef=kconfig --language-force=kconfig "${regex[@]}"
 273
 274 }
 275
 276 emacs()
 277 {
 278         setup_regex emacs asm c
 279         all_target_sources | xargs $1 -a "${regex[@]}"
 280
 281         setup_regex emacs kconfig
 282         all_kconfigs | xargs $1 -a "${regex[@]}"
 283 }
 284
 285 xtags()
 286 {
 287         if $1 --version 2>&1 | grep -iq exuberant; then
 288                 exuberant $1
 289         elif $1 --version 2>&1 | grep -iq emacs; then
 290                 emacs $1
 291         else
 292                 all_target_sources | xargs $1 -a
 293         fi
 294 }
 295
 296 # Support um (which uses SUBARCH)
 297 if [ "${ARCH}" = "um" ]; then
 298         if [ "$SUBARCH" = "i386" ]; then
 299                 archinclude=x86
 300         elif [ "$SUBARCH" = "x86_64" ]; then
 301                 archinclude=x86
 302         else
 303                 archinclude=${SUBARCH}
 304         fi
 305 elif [ "${SRCARCH}" = "arm" -a "${SUBARCH}" != "" ]; then
 306         subarchdir=$(find ${tree}arch/$SRCARCH/ -name "mach-*" -type d -o \
 307                                                         -name "plat-*" -type d);
 308         for i in $subarchdir; do
 309                 case "$i" in
 310                         *"mach-"${SUBARCH})
 311                                 ;;
 312                         *"plat-"${SUBARCH})
 313                                 ;;
 314                         *)
 315                                 subarchprune="$subarchprune \
 316                                                 -wholename $i -prune -o"
 317                                 ;;
 318                 esac
 319         done
 320 fi
 321
 322 remove_structs=
 323 case "$1" in
 324         "cscope")
 325                 docscope
 326                 ;;
 327
 328         "gtags")
 329                 dogtags
 330                 ;;
 331
 332         "tags")
 333                 rm -f tags
 334                 xtags ctags
 335                 remove_structs=y
 336                 ;;
 337
 338         "TAGS")
 339                 rm -f TAGS
 340                 xtags etags
 341                 remove_structs=y
 342                 ;;
 343 esac
 344
 345 # Remove structure forward declarations.
 346 if [ -n "$remove_structs" ]; then
 347     LANG=C sed -i -e '/^\([a-zA-Z_][a-zA-Z0-9_]*\)\t.*\t\/\^struct \1;.*\$\/;"\tx$/d' $1
 348 fi