xref: /openbmc/linux/scripts/tags.sh (revision ba61bb17) 
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
10if [ "$KBUILD_VERBOSE" = "1" ]; then
11	set -x
12fi
13
14# RCS_FIND_IGNORE has escaped ()s -- remove them.
15ignore="$(echo "$RCS_FIND_IGNORE" | sed 's|\\||g' )"
16# tags and cscope files should also ignore MODVERSION *.mod.c files
17ignore="$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
22if [ "${KBUILD_SRC}" = "" ]; then
23	tree=
24else
25	tree=${srctree}/
26fi
27
28# ignore userspace tools
29ignore="$ignore ( -path ${tree}tools ) -prune -o"
30
31# Detect if ALLSOURCE_ARCHS is set. If not, we assume SRCARCH
32if [ "${ALLSOURCE_ARCHS}" = "" ]; then
33	ALLSOURCE_ARCHS=${SRCARCH}
34elif [ "${ALLSOURCE_ARCHS}" = "all" ]; then
35	ALLSOURCE_ARCHS=$(find ${tree}arch/ -mindepth 1 -maxdepth 1 -type d -printf '%f ')
36fi
37
38# find sources in arch/$ARCH
39find_arch_sources()
40{
41	for i in $archincludedir; do
42		prune="$prune -wholename $i -prune -o"
43	done
44	find ${tree}arch/$1 $ignore $subarchprune $prune -name "$2" \
45		-not -type l -print;
46}
47
48# find sources in arch/$1/include
49find_arch_include_sources()
50{
51	include=$(find ${tree}arch/$1/ $subarchprune \
52					-name include -type d -print);
53	if [ -n "$include" ]; then
54		archincludedir="$archincludedir $include"
55		find $include $ignore -name "$2" -not -type l -print;
56	fi
57}
58
59# find sources in include/
60find_include_sources()
61{
62	find ${tree}include $ignore -name config -prune -o -name "$1" \
63		-not -type l -print;
64}
65
66# find sources in rest of tree
67# we could benefit from a list of dirs to search in here
68find_other_sources()
69{
70	find ${tree}* $ignore \
71	     \( -path ${tree}include -o -path ${tree}arch -o -name '.tmp_*' \) -prune -o \
72	       -name "$1" -not -type l -print;
73}
74
75find_sources()
76{
77	find_arch_sources $1 "$2"
78}
79
80all_sources()
81{
82	find_arch_include_sources ${SRCARCH} '*.[chS]'
83	if [ ! -z "$archinclude" ]; then
84		find_arch_include_sources $archinclude '*.[chS]'
85	fi
86	find_include_sources '*.[chS]'
87	for arch in $ALLSOURCE_ARCHS
88	do
89		find_sources $arch '*.[chS]'
90	done
91	find_other_sources '*.[chS]'
92}
93
94all_compiled_sources()
95{
96	for i in $(all_sources); do
97		case "$i" in
98			*.[cS])
99				j=${i/\.[cS]/\.o}
100				j="${j#$tree}"
101				if [ -e $j ]; then
102					echo $i
103				fi
104				;;
105			*)
106				echo $i
107				;;
108		esac
109	done
110}
111
112all_target_sources()
113{
114	if [ -n "$COMPILED_SOURCE" ]; then
115		all_compiled_sources
116	else
117		all_sources
118	fi
119}
120
121all_kconfigs()
122{
123	find ${tree}arch/ -maxdepth 1 $ignore \
124	       -name "Kconfig*" -not -type l -print;
125	for arch in $ALLSOURCE_ARCHS; do
126		find_sources $arch 'Kconfig*'
127	done
128	find_other_sources 'Kconfig*'
129}
130
131docscope()
132{
133	(echo \-k; echo \-q; all_target_sources) > cscope.files
134	cscope -b -f cscope.out
135}
136
137dogtags()
138{
139	all_target_sources | gtags -i -f -
140}
141
142# Basic regular expressions with an optional /kind-spec/ for ctags and
143# the following limitations:
144# - No regex modifiers
145# - Use \{0,1\} instead of \?, because etags expects an unescaped ?
146# - \s is not working with etags, use a space or [ \t]
147# - \w works, but does not match underscores in etags
148# - etags regular expressions have to match at the start of a line;
149#   a ^[^#] is prepended by setup_regex unless an anchor is already present
150regex_asm=(
151	'/^\(ENTRY\|_GLOBAL\)(\([[:alnum:]_\\]*\)).*/\2/'
152)
153regex_c=(
154	'/^SYSCALL_DEFINE[0-9](\([[:alnum:]_]*\).*/sys_\1/'
155	'/^COMPAT_SYSCALL_DEFINE[0-9](\([[:alnum:]_]*\).*/compat_sys_\1/'
156	'/^TRACE_EVENT(\([[:alnum:]_]*\).*/trace_\1/'
157	'/^TRACE_EVENT(\([[:alnum:]_]*\).*/trace_\1_rcuidle/'
158	'/^DEFINE_EVENT([^,)]*, *\([[:alnum:]_]*\).*/trace_\1/'
159	'/^DEFINE_EVENT([^,)]*, *\([[:alnum:]_]*\).*/trace_\1_rcuidle/'
160	'/^DEFINE_INSN_CACHE_OPS(\([[:alnum:]_]*\).*/get_\1_slot/'
161	'/^DEFINE_INSN_CACHE_OPS(\([[:alnum:]_]*\).*/free_\1_slot/'
162	'/^PAGEFLAG(\([[:alnum:]_]*\).*/Page\1/'
163	'/^PAGEFLAG(\([[:alnum:]_]*\).*/SetPage\1/'
164	'/^PAGEFLAG(\([[:alnum:]_]*\).*/ClearPage\1/'
165	'/^TESTSETFLAG(\([[:alnum:]_]*\).*/TestSetPage\1/'
166	'/^TESTPAGEFLAG(\([[:alnum:]_]*\).*/Page\1/'
167	'/^SETPAGEFLAG(\([[:alnum:]_]*\).*/SetPage\1/'
168	'/\<__SETPAGEFLAG(\([[:alnum:]_]*\).*/__SetPage\1/'
169	'/\<TESTCLEARFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
170	'/\<__TESTCLEARFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
171	'/\<CLEARPAGEFLAG(\([[:alnum:]_]*\).*/ClearPage\1/'
172	'/\<__CLEARPAGEFLAG(\([[:alnum:]_]*\).*/__ClearPage\1/'
173	'/^__PAGEFLAG(\([[:alnum:]_]*\).*/__SetPage\1/'
174	'/^__PAGEFLAG(\([[:alnum:]_]*\).*/__ClearPage\1/'
175	'/^PAGEFLAG_FALSE(\([[:alnum:]_]*\).*/Page\1/'
176	'/\<TESTSCFLAG(\([[:alnum:]_]*\).*/TestSetPage\1/'
177	'/\<TESTSCFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
178	'/\<SETPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/SetPage\1/'
179	'/\<CLEARPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/ClearPage\1/'
180	'/\<__CLEARPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/__ClearPage\1/'
181	'/\<TESTCLEARFLAG_FALSE(\([[:alnum:]_]*\).*/TestClearPage\1/'
182	'/^PAGE_TYPE_OPS(\([[:alnum:]_]*\).*/Page\1/'
183	'/^PAGE_TYPE_OPS(\([[:alnum:]_]*\).*/__SetPage\1/'
184	'/^PAGE_TYPE_OPS(\([[:alnum:]_]*\).*/__ClearPage\1/'
185	'/^TASK_PFA_TEST([^,]*, *\([[:alnum:]_]*\))/task_\1/'
186	'/^TASK_PFA_SET([^,]*, *\([[:alnum:]_]*\))/task_set_\1/'
187	'/^TASK_PFA_CLEAR([^,]*, *\([[:alnum:]_]*\))/task_clear_\1/'
188	'/^DEF_MMIO_\(IN\|OUT\)_[XD](\([[:alnum:]_]*\),[^)]*)/\2/'
189	'/^DEBUGGER_BOILERPLATE(\([[:alnum:]_]*\))/\1/'
190	'/^DEF_PCI_AC_\(\|NO\)RET(\([[:alnum:]_]*\).*/\2/'
191	'/^PCI_OP_READ(\(\w*\).*[1-4])/pci_bus_read_config_\1/'
192	'/^PCI_OP_WRITE(\(\w*\).*[1-4])/pci_bus_write_config_\1/'
193	'/\<DEFINE_\(MUTEX\|SEMAPHORE\|SPINLOCK\)(\([[:alnum:]_]*\)/\2/v/'
194	'/\<DEFINE_\(RAW_SPINLOCK\|RWLOCK\|SEQLOCK\)(\([[:alnum:]_]*\)/\2/v/'
195	'/\<DECLARE_\(RWSEM\|COMPLETION\)(\([[:alnum:]_]\+\)/\2/v/'
196	'/\<DECLARE_BITMAP(\([[:alnum:]_]*\)/\1/v/'
197	'/\(^\|\s\)\(\|L\|H\)LIST_HEAD(\([[:alnum:]_]*\)/\3/v/'
198	'/\(^\|\s\)RADIX_TREE(\([[:alnum:]_]*\)/\2/v/'
199	'/\<DEFINE_PER_CPU([^,]*, *\([[:alnum:]_]*\)/\1/v/'
200	'/\<DEFINE_PER_CPU_SHARED_ALIGNED([^,]*, *\([[:alnum:]_]*\)/\1/v/'
201	'/\<DECLARE_WAIT_QUEUE_HEAD(\([[:alnum:]_]*\)/\1/v/'
202	'/\<DECLARE_\(TASKLET\|WORK\|DELAYED_WORK\)(\([[:alnum:]_]*\)/\2/v/'
203	'/\(^\s\)OFFSET(\([[:alnum:]_]*\)/\2/v/'
204	'/\(^\s\)DEFINE(\([[:alnum:]_]*\)/\2/v/'
205	'/\<DEFINE_HASHTABLE(\([[:alnum:]_]*\)/\1/v/'
206)
207regex_kconfig=(
208	'/^[[:blank:]]*\(menu\|\)config[[:blank:]]\+\([[:alnum:]_]\+\)/\2/'
209	'/^[[:blank:]]*\(menu\|\)config[[:blank:]]\+\([[:alnum:]_]\+\)/CONFIG_\2/'
210)
211setup_regex()
212{
213	local mode=$1 lang tmp=() r
214	shift
215
216	regex=()
217	for lang; do
218		case "$lang" in
219		asm)       tmp=("${regex_asm[@]}") ;;
220		c)         tmp=("${regex_c[@]}") ;;
221		kconfig)   tmp=("${regex_kconfig[@]}") ;;
222		esac
223		for r in "${tmp[@]}"; do
224			if test "$mode" = "exuberant"; then
225				regex[${#regex[@]}]="--regex-$lang=${r}b"
226			else
227				# Remove ctags /kind-spec/
228				case "$r" in
229				/*/*/?/)
230					r=${r%?/}
231				esac
232				# Prepend ^[^#] unless already anchored
233				case "$r" in
234				/^*) ;;
235				*)
236					r="/^[^#]*${r#/}"
237				esac
238				regex[${#regex[@]}]="--regex=$r"
239			fi
240		done
241	done
242}
243
244exuberant()
245{
246	setup_regex exuberant asm c
247	all_target_sources | xargs $1 -a                        \
248	-I __initdata,__exitdata,__initconst,			\
249	-I __initdata_memblock					\
250	-I __refdata,__attribute,__maybe_unused,__always_unused \
251	-I __acquires,__releases,__deprecated			\
252	-I __read_mostly,__aligned,____cacheline_aligned        \
253	-I ____cacheline_aligned_in_smp                         \
254	-I __cacheline_aligned,__cacheline_aligned_in_smp	\
255	-I ____cacheline_internodealigned_in_smp                \
256	-I __used,__packed,__packed2__,__must_check,__must_hold	\
257	-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL,ACPI_EXPORT_SYMBOL   \
258	-I DEFINE_TRACE,EXPORT_TRACEPOINT_SYMBOL,EXPORT_TRACEPOINT_SYMBOL_GPL \
259	-I static,const						\
260	--extra=+fq --c-kinds=+px --fields=+iaS --langmap=c:+.h \
261	"${regex[@]}"
262
263	setup_regex exuberant kconfig
264	all_kconfigs | xargs $1 -a                              \
265	--langdef=kconfig --language-force=kconfig "${regex[@]}"
266
267}
268
269emacs()
270{
271	setup_regex emacs asm c
272	all_target_sources | xargs $1 -a "${regex[@]}"
273
274	setup_regex emacs kconfig
275	all_kconfigs | xargs $1 -a "${regex[@]}"
276}
277
278xtags()
279{
280	if $1 --version 2>&1 | grep -iq exuberant; then
281		exuberant $1
282	elif $1 --version 2>&1 | grep -iq emacs; then
283		emacs $1
284	else
285		all_target_sources | xargs $1 -a
286	fi
287}
288
289# Support um (which uses SUBARCH)
290if [ "${ARCH}" = "um" ]; then
291	if [ "$SUBARCH" = "i386" ]; then
292		archinclude=x86
293	elif [ "$SUBARCH" = "x86_64" ]; then
294		archinclude=x86
295	else
296		archinclude=${SUBARCH}
297	fi
298elif [ "${SRCARCH}" = "arm" -a "${SUBARCH}" != "" ]; then
299	subarchdir=$(find ${tree}arch/$SRCARCH/ -name "mach-*" -type d -o \
300							-name "plat-*" -type d);
301	mach_suffix=$SUBARCH
302	plat_suffix=$SUBARCH
303
304	# Special cases when $plat_suffix != $mach_suffix
305	case $mach_suffix in
306		"omap1" | "omap2")
307			plat_suffix="omap"
308			;;
309	esac
310
311	if [ ! -d ${tree}arch/$SRCARCH/mach-$mach_suffix ]; then
312		echo "Warning: arch/arm/mach-$mach_suffix/ not found." >&2
313		echo "         Fix your \$SUBARCH appropriately" >&2
314	fi
315
316	for i in $subarchdir; do
317		case "$i" in
318			*"mach-"${mach_suffix})
319				;;
320			*"plat-"${plat_suffix})
321				;;
322			*)
323				subarchprune="$subarchprune \
324						-wholename $i -prune -o"
325				;;
326		esac
327	done
328fi
329
330remove_structs=
331case "$1" in
332	"cscope")
333		docscope
334		;;
335
336	"gtags")
337		dogtags
338		;;
339
340	"tags")
341		rm -f tags
342		xtags ctags
343		remove_structs=y
344		;;
345
346	"TAGS")
347		rm -f TAGS
348		xtags etags
349		remove_structs=y
350		;;
351esac
352
353# Remove structure forward declarations.
354if [ -n "$remove_structs" ]; then
355    LANG=C sed -i -e '/^\([a-zA-Z_][a-zA-Z0-9_]*\)\t.*\t\/\^struct \1;.*\$\/;"\tx$/d' $1
356fi
357