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#!/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
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