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