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mkcapflags.pl: convert to mkcapflags.sh

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Generate asm-x86/cpufeature.h with posix-2008 commands instead of perl.

Signed-off-by: Rob Landley <rob@landley.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Josh Boyer <jwboyer@redhat.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: David Howells <dhowell@redhat.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rob Landley 2013-04-29 15:05:53 -07:00 committed by Linus Torvalds
parent ec686c9239
commit 0c0de199ce
3 changed files with 43 additions and 50 deletions
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4
arch/x86/kernel/cpu/Makefile
View file

@ -43,10 +43,10 @@ obj-$(CONFIG_MTRR) += mtrr/
obj-$(CONFIG_X86_LOCAL_APIC) += perfctr-watchdog.o perf_event_amd_ibs.o
quiet_cmd_mkcapflags = MKCAP $@
cmd_mkcapflags = $(PERL) $(srctree)/$(src)/mkcapflags.pl $< $@
cmd_mkcapflags = $(CONFIG_SHELL) $(srctree)/$(src)/mkcapflags.sh $< $@
cpufeature = $(src)/../../include/asm/cpufeature.h
targets += capflags.c
$(obj)/capflags.c: $(cpufeature) $(src)/mkcapflags.pl FORCE
$(obj)/capflags.c: $(cpufeature) $(src)/mkcapflags.sh FORCE
$(call if_changed,mkcapflags)

48
arch/x86/kernel/cpu/mkcapflags.pl
View file

@ -1,48 +0,0 @@
#!/usr/bin/perl -w
#
# Generate the x86_cap_flags[] array from include/asm-x86/cpufeature.h
#
($in, $out) = @ARGV;
open(IN, "< $in\0") or die "$0: cannot open: $in: $!\n";
open(OUT, "> $out\0") or die "$0: cannot create: $out: $!\n";
print OUT "#ifndef _ASM_X86_CPUFEATURE_H\n";
print OUT "#include <asm/cpufeature.h>\n";
print OUT "#endif\n";
print OUT "\n";
print OUT "const char * const x86_cap_flags[NCAPINTS*32] = {\n";
%features = ();
$err = 0;
while (defined($line = <IN>)) {
if ($line =~ /^\s*\#\s*define\s+(X86_FEATURE_(\S+))\s+(.*)$/) {
$macro = $1;
$feature = "\L$2";
$tail = $3;
if ($tail =~ /\/\*\s*\"([^"]*)\".*\*\//) {
$feature = "\L$1";
}
next if ($feature eq '');
if ($features{$feature}++) {
print STDERR "$in: duplicate feature name: $feature\n";
$err++;
}
printf OUT "\t%-32s = \"%s\",\n", "[$macro]", $feature;
}
}
print OUT "};\n";
close(IN);
close(OUT);
if ($err) {
unlink($out);
exit(1);
}
exit(0);

41
arch/x86/kernel/cpu/mkcapflags.sh Normal file
View file

@ -0,0 +1,41 @@
#!/bin/sh
#
# Generate the x86_cap_flags[] array from include/asm/cpufeature.h
#
IN=$1
OUT=$2
TABS="$(printf '\t\t\t\t\t')"
trap 'rm "$OUT"' EXIT
(
echo "#ifndef _ASM_X86_CPUFEATURE_H"
echo "#include <asm/cpufeature.h>"
echo "#endif"
echo ""
echo "const char * const x86_cap_flags[NCAPINTS*32] = {"
# Iterate through any input lines starting with #define X86_FEATURE_
sed -n -e 's/\t/ /g' -e 's/^ *# *define *X86_FEATURE_//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 "$VALUE" | tr A-Z a-z)"
TABCOUNT=$(( ( 5*8 - 14 - $(echo "$NAME" | wc -c) ) / 8 ))
printf "\t[%s]%.*s = %s,\n" \
"X86_FEATURE_$NAME" "$TABCOUNT" "$TABS" "$VALUE"
done
echo "};"
) > $OUT
trap - EXIT