scripts: fix tags.sh to current source tree

Update tags.sh tool to generate appropriate files to use with cscope and
ctags programs.

Current implementation generates tags for all but samples and it's
possible to filter by architecture.

Signed-off-by: Juan Manuel Torres Palma <j.m.torrespalma@gmail.com>

scripts/tags.sh

@@ -5,138 +5,40 @@
 # mode may be any of: tags, TAGS, cscope
 #
 # Uses the following environment variables:
-# ARCH, SUBARCH, SRCARCH, srctree, src, obj
+# ARCH, SOC, BOARD, ZEPHYR_BASE
 
-if [ "$KBUILD_VERBOSE" = "1" ]; then
-	set -x
-fi
-
-# RCS_FIND_IGNORE has escaped ()s -- remove them.
-ignore="$(echo "$RCS_FIND_IGNORE" | sed 's|\\||g' )"
-# tags and cscope files should also ignore MODVERSION *.mod.c files
-ignore="$ignore ( -name *.mod.c ) -prune -o"
-
-# Do not use full path if we do not use O=.. builds
-# Use make O=. {tags|cscope}
-# to force full paths for a non-O= build
-if [ "${KBUILD_SRC}" = "" ]; then
-	tree=
-else
-	tree=${srctree}/
-fi
-
-# ignore userspace tools
-ignore="$ignore ( -path ${tree}tools ) -prune -o"
-
-# Find all available archs
-find_all_archs()
-{
-	ALLSOURCE_ARCHS=""
-	for arch in `ls ${tree}arch`; do
-		ALLSOURCE_ARCHS="${ALLSOURCE_ARCHS} "${arch##\/}
-	done
-}
-
-# Detect if ALLSOURCE_ARCHS is set. If not, we assume SRCARCH
-if [ "${ALLSOURCE_ARCHS}" = "" ]; then
-	ALLSOURCE_ARCHS=${SRCARCH}
-elif [ "${ALLSOURCE_ARCHS}" = "all" ]; then
-	find_all_archs
-fi
-
-# find sources in arch/$ARCH
-find_arch_sources()
-{
-	for i in $archincludedir; do
-		prune="$prune -wholename $i -prune -o"
-	done
-	find ${tree}arch/$1 $ignore $subarchprune $prune -name "$2" \
-		-not -type l -print;
-}
-
-# find sources in arch/$1/include
-find_arch_include_sources()
-{
-	include=$(find ${tree}arch/$1/ $subarchprune \
-					-name include -type d -print);
-	if [ -n "$include" ]; then
-		archincludedir="$archincludedir $include"
-		find $include $ignore -name "$2" -not -type l -print;
-	fi
-}
-
-# find sources in include/
-find_include_sources()
-{
-	find ${tree}include $ignore -name config -prune -o -name "$1" \
-		-not -type l -print;
-}
-
-# find sources in rest of tree
-# we could benefit from a list of dirs to search in here
-find_other_sources()
-{
-	find ${tree}* $ignore \
-	     \( -name include -o -name arch -o -name '.tmp_*' \) -prune -o \
-	       -name "$1" -not -type l -print;
-}
 
 find_sources()
 {
-	find_arch_sources $1 "$2"
+	find "$1" -name "$2"
 }
 
+# Looks for assembly, c and header files of selected architectures
 all_sources()
 {
-	find_arch_include_sources ${SRCARCH} '*.[chS]'
+	for dir in $ALLSOURCES
-	if [ ! -z "$archinclude" ]; then
-		find_arch_include_sources $archinclude '*.[chS]'
-	fi
-	find_include_sources '*.[chS]'
-	for arch in $ALLSOURCE_ARCHS
 	do
-		find_sources $arch '*.[chS]'
+		find_sources "$dir" '*.[chS]'
-	done
-	find_other_sources '*.[chS]'
-}
-
-all_compiled_sources()
-{
-	for i in $(all_sources); do
-		case "$i" in
-			*.[cS])
-				j=${i/\.[cS]/\.o}
-				if [ -e $j ]; then
-					echo $i
-				fi
-				;;
-			*)
-				echo $i
-				;;
-		esac
 	done
 }
 
 all_target_sources()
 {
-	if [ -n "$COMPILED_SOURCE" ]; then
+	all_sources
-		all_compiled_sources
-	else
-		all_sources
-	fi
 }
 
 all_kconfigs()
 {
-	for arch in $ALLSOURCE_ARCHS; do
+	for dir in $ALLSOURCES; do
-		find_sources $arch 'Kconfig*'
+		find_sources $dir 'Kconfig*'
 	done
-	find_other_sources 'Kconfig*'
 }
 
 all_defconfigs()
 {
-	find_sources $ALLSOURCE_ARCHS "defconfig"
+	for dir in $ALLSOURCES; do
+		find_sources $dir 'defconfig*'
+	done
 }
 
 docscope()
@@ -288,32 +190,33 @@ xtags()
 	fi
 }
 
-# Support um (which uses SUBARCH)
+
-if [ "${ARCH}" = "um" ]; then
+# Used for debugging
-	if [ "$SUBARCH" = "i386" ]; then
+if [ "$TAGS_VERBOSE" = "1" ]; then
-		archinclude=x86
+	set -x
-	elif [ "$SUBARCH" = "x86_64" ]; then
-		archinclude=x86
-	else
-		archinclude=${SUBARCH}
-	fi
-elif [ "${SRCARCH}" = "arm" -a "${SUBARCH}" != "" ]; then
-	subarchdir=$(find ${tree}arch/$SRCARCH/ -name "mach-*" -type d -o \
-							-name "plat-*" -type d);
-	for i in $subarchdir; do
-		case "$i" in
-			*"mach-"${SUBARCH})
-				;;
-			*"plat-"${SUBARCH})
-				;;
-			*)
-				subarchprune="$subarchprune \
-						-wholename $i -prune -o"
-				;;
-		esac
-	done
 fi
 
+# Set project base directory
+if [ "${ZEPHYR_BASE}" = "" ]; then
+	echo "error: run zephyr-env.sh before $0"
+	exit 1
+fi
+tree="${ZEPHYR_BASE}/"
+
+# List of always explored directories
+COMMON_DIRS="drivers dts ext include kernel lib misc subsys"
+
+# Detect if ARCH is set. If not, we look for all archs
+if [ "${ARCH}" = "" ]; then
+	ALLSOURCES="${COMMON_DIRS} arch boards"
+else
+	ALLSOURCES="${COMMON_DIRS} arch/${ARCH} boards/${ARCH}"
+fi
+
+# TODO: detect if BOARD is set so we can select certain files
+
+
+# Perform main action
 remove_structs=
 case "$1" in
 	"cscope")
@@ -335,6 +238,9 @@ case "$1" in
 		xtags etags
 		remove_structs=y
 		;;
+	*)
+		echo "error: incorrect parameter"
+		;;
 esac
 
 # Remove structure forward declarations.