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Date: Tue, 26 Feb 2013 21:57:58 -0800 (PST)
From: Rob Landley <rob@...dley.net>
To: linux-kernel@...r.kernel.org
Cc: Arnd Bergmann <arnd@...db.de>, Dave Jones <davej@...hat.com>,
David Howells <dhowells@...hat.com>,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
Cyrill Gorcunov <gorcunov@...nvz.org>,
Vince Weaver <vincent.weaver@...ne.edu>,
Zheng Yan <zheng.z.yan@...el.com>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>, x86@...nel.org,
"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 1/3] convert mkcapflags.pl to mkcapflags.sh
From: Rob Landley <rob@...dley.net>
Generate asm-x86/cpufeature.h with posix-2008 commands instead of perl.
Signed-off-by: Rob Landley <rob@...dley.net>
---
arch/x86/kernel/cpu/Makefile | 4 +-
arch/x86/kernel/cpu/mkcapflags.pl | 48 ----------------------------
arch/x86/kernel/cpu/mkcapflags.sh | 41 +++++++++++++++++++++++
3 files changed, 43 insertions(+), 50 deletions(-)
--- linux/arch/x86/kernel/cpu/mkcapflags.pl
+++ /dev/null
@@ -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);
--- /dev/null 2012-07-11 05:54:12.790418331 -0500
+++ linux/arch/x86/kernel/cpu/mkcapflags.sh 2012-07-22 13:13:57.700823094 -0500
@@ -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 "};"
+) > $OUT
+
+trap - EXIT
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index 25f24dc..9edf7e7 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -43,10 +43,10 @@ obj-$(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)
--
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