[mirror_ubuntu-bionic-kernel.git] / arch / x86 / kernel / cpu / mkcapflags.sh

#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
#
# Generate the x86_cap/bug_flags[] arrays from include/asm/cpufeatures.h
#

set -e

IN=$1
OUT=$2

dump_array()
{
	ARRAY=$1
	SIZE=$2
	PFX=$3
	POSTFIX=$4

	PFX_SZ=$(echo $PFX | wc -c)
	TABS="$(printf '\t\t\t\t\t')"

	echo "const char * const $ARRAY[$SIZE] = {"

	# Iterate through any input lines starting with #define $PFX
	sed -n -e 's/\t/ /g' -e "s/^ *# *define *$PFX//p" $IN |
	while read i
	do
		# Name is everything up to the first whitespace
		NAME="$(echo "$i" | sed 's/ .*//')"

		# If the /* comment */ starts with a quote string, grab that.
		VALUE="$(echo "$i" | sed -n 's@.*/\* *\("[^"]*"\).*\*/@\1@p')"
		[ -z "$VALUE" ] && VALUE="\"$NAME\""
		[ "$VALUE" = '""' ] && continue

		# Name is uppercase, VALUE is all lowercase
		VALUE="$(echo "$VALUE" | tr A-Z a-z)"

        if [ -n "$POSTFIX" ]; then
            T=$(( $PFX_SZ + $(echo $POSTFIX | wc -c) + 2 ))
	        TABS="$(printf '\t\t\t\t\t\t')"
		    TABCOUNT=$(( ( 6*8 - ($T + 1) - $(echo "$NAME" | wc -c) ) / 8 ))
		    printf "\t[%s - %s]%.*s = %s,\n" "$PFX$NAME" "$POSTFIX" "$TABCOUNT" "$TABS" "$VALUE"
        else
		    TABCOUNT=$(( ( 5*8 - ($PFX_SZ + 1) - $(echo "$NAME" | wc -c) ) / 8 ))
            printf "\t[%s]%.*s = %s,\n" "$PFX$NAME" "$TABCOUNT" "$TABS" "$VALUE"
        fi
	done
	echo "};"
}

trap 'rm "$OUT"' EXIT

(
	echo "#ifndef _ASM_X86_CPUFEATURES_H"
	echo "#include <asm/cpufeatures.h>"
	echo "#endif"
	echo ""

	dump_array "x86_cap_flags" "NCAPINTS*32" "X86_FEATURE_" ""
	echo ""

	dump_array "x86_bug_flags" "NBUGINTS*32" "X86_BUG_" "NCAPINTS*32"

) > $OUT

trap - EXIT
Commit	Line	Data
0c0de199	1	#!/bin/sh
b2441318	2	# SPDX-License-Identifier: GPL-2.0
0c0de199	3	#
cd4d09ec	4	# Generate the x86_cap/bug_flags[] arrays from include/asm/cpufeatures.h
0c0de199 RL	5	#
0c0de199 RL	6
708336e4 MY	7	set -e
708336e4 MY	8
0c0de199 RL	9	IN=$1
	10	OUT=$2
	11
e85bd989	12	dump_array()
80a208bd BP	13	{
	14	ARRAY=$1
	15	SIZE=$2
	16	PFX=$3
	17	POSTFIX=$4
0c0de199	18
80a208bd BP	19	PFX_SZ=$(echo $PFX \| wc -c)
	20	TABS="$(printf '\t\t\t\t\t')"
	21
	22	echo "const char * const $ARRAY[$SIZE] = {"
0c0de199	23
80a208bd BP	24	# Iterate through any input lines starting with #define $PFX
80a208bd BP	25	sed -n -e 's/\t/ /g' -e "s/^ # define *$PFX//p" $IN \|
0c0de199 RL	26	while read i
	27	do
	28	# Name is everything up to the first whitespace
	29	NAME="$(echo "$i" \| sed 's/ .*//')"
	30
	31	# If the /* comment */ starts with a quote string, grab that.
	32	VALUE="$(echo "$i" \| sed -n 's@./\ \("[^"]"\).\/@\1@p')"
	33	[ -z "$VALUE" ] && VALUE="\"$NAME\""
ea174f4c	34	[ "$VALUE" = '""' ] && continue
0c0de199 RL	35
	36	# Name is uppercase, VALUE is all lowercase
	37	VALUE="$(echo "$VALUE" \| tr A-Z a-z)"
	38
80a208bd BP	39	if [ -n "$POSTFIX" ]; then
	40	T=$(( $PFX_SZ + $(echo $POSTFIX \| wc -c) + 2 ))
	41	TABS="$(printf '\t\t\t\t\t\t')"
	42	TABCOUNT=$(( ( 6*8 - ($T + 1) - $(echo "$NAME" \| wc -c) ) / 8 ))
	43	printf "\t[%s - %s]%.*s = %s,\n" "$PFX$NAME" "$POSTFIX" "$TABCOUNT" "$TABS" "$VALUE"
	44	else
	45	TABCOUNT=$(( ( 5*8 - ($PFX_SZ + 1) - $(echo "$NAME" \| wc -c) ) / 8 ))
	46	printf "\t[%s]%.*s = %s,\n" "$PFX$NAME" "$TABCOUNT" "$TABS" "$VALUE"
	47	fi
0c0de199 RL	48	done
0c0de199 RL	49	echo "};"
80a208bd BP	50	}
	51
	52	trap 'rm "$OUT"' EXIT
	53
	54	(
cd4d09ec BP	55	echo "#ifndef _ASM_X86_CPUFEATURES_H"
cd4d09ec BP	56	echo "#include <asm/cpufeatures.h>"
80a208bd BP	57	echo "#endif"
	58	echo ""
	59
	60	dump_array "x86_cap_flags" "NCAPINTS*32" "X86_FEATURE_" ""
	61	echo ""
	62
	63	dump_array "x86_bug_flags" "NBUGINTS32" "X86_BUG_" "NCAPINTS32"
	64
0c0de199 RL	65	) > $OUT
	66
	67	trap - EXIT