arch/x86/kernel/cpu/mkcapflags.sh

   1 #!/bin/sh
   2 #
   3 # Generate the x86_cap_flags[] array from include/asm/cpufeature.h
   4 #
   5
   6 IN=$1
   7 OUT=$2
   8
   9 TABS="$(printf '\t\t\t\t\t')"
  10 trap 'rm "$OUT"' EXIT
  11
  12 (
  13         echo "#ifndef _ASM_X86_CPUFEATURE_H"
  14         echo "#include <asm/cpufeature.h>"
  15         echo "#endif"
  16         echo ""
  17         echo "const char * const x86_cap_flags[NCAPINTS*32] = {"
  18
  19         # Iterate through any input lines starting with #define X86_FEATURE_
  20         sed -n -e 's/\t/ /g' -e 's/^ *# *define *X86_FEATURE_//p' $IN |
  21         while read i
  22         do
  23                 # Name is everything up to the first whitespace
  24                 NAME="$(echo "$i" | sed 's/ .*//')"
  25
  26                 # If the /* comment */ starts with a quote string, grab that.
  27                 VALUE="$(echo "$i" | sed -n 's@.*/\* *\("[^"]*"\).*\*/@\1@p')"
  28                 [ -z "$VALUE" ] && VALUE="\"$NAME\""
  29                 [ "$VALUE" == '""' ] && continue
  30
  31                 # Name is uppercase, VALUE is all lowercase
  32                 VALUE="$(echo "$VALUE" | tr A-Z a-z)"
  33
  34                 TABCOUNT=$(( ( 5*8 - 14 - $(echo "$NAME" | wc -c) ) / 8 ))
  35                 printf "\t[%s]%.*s = %s,\n" \
  36                         "X86_FEATURE_$NAME" "$TABCOUNT" "$TABS" "$VALUE"
  37         done
  38         echo "};"
  39 ) > $OUT
  40
  41 trap - EXIT