linux-kernel - [PATCH v2 3/6] add an endian argument to scripts/recordmcount.pl

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Date:	Fri, 29 May 2009 23:04:50 +0800
From:	wuzhangjin@...il.com
To:	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org
Cc:	Wu Zhangjin <wuzj@...ote.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Nicholas Mc Guire <der.herr@...r.at>
Subject: [PATCH v2 3/6] add an endian argument to scripts/recordmcount.pl

From: Wu Zhangjin <wuzj@...ote.com>

mips architecture need this argument to handle big/little endian
differently.

Reviewed-by: Steven Rostedt <rostedt@...dmis.org>
Signed-off-by: Wu Zhangjin <wuzj@...ote.com>
---
 scripts/Makefile.build  |    1 +
 scripts/recordmcount.pl |   21 +++++++++++++++------
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 5c4b7a4..548d575 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -207,6 +207,7 @@ endif
 
 ifdef CONFIG_FTRACE_MCOUNT_RECORD
 cmd_record_mcount = perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \
+	"$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \
 	"$(if $(CONFIG_64BIT),64,32)" \
 	"$(OBJDUMP)" "$(OBJCOPY)" "$(CC)" "$(LD)" "$(NM)" "$(RM)" "$(MV)" \
 	"$(if $(part-of-module),1,0)" "$(@)";
diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
index a5d2ace..57a2b6a 100755
--- a/scripts/recordmcount.pl
+++ b/scripts/recordmcount.pl
@@ -100,13 +100,13 @@ $P =~ s@.*/@@g;
 
 my $V = '0.1';
 
-if ($#ARGV < 7) {
-	print "usage: $P arch bits objdump objcopy cc ld nm rm mv is_module inputfile\n";
+if ($#ARGV < 8) {
+	print "usage: $P arch endian bits objdump objcopy cc ld nm rm mv is_module inputfile\n";
 	print "version: $V\n";
 	exit(1);
 }
 
-my ($arch, $bits, $objdump, $objcopy, $cc,
+my ($arch, $endian, $bits, $objdump, $objcopy, $cc,
     $ld, $nm, $rm, $mv, $is_module, $inputfile) = @ARGV;
 
 # This file refers to mcount and shouldn't be ftraced, so lets' ignore it
@@ -216,9 +216,18 @@ if ($arch eq "x86_64") {
 
 } elsif ($arch eq "mips") {
 	$mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s_mcount\$";
-	$ld .= " -melf".$bits."btsmip";
+	$objdump .= " -Melf-trad".$endian."mips ";
 
-	$cc .= " -mno-abicalls -fno-pic ";
+	if ($endian eq "big") {
+		$endian = " -EB ";
+		$ld .= " -melf".$bits."btsmip";
+	} else {
+		$endian = " -EL ";
+		$ld .= " -melf".$bits."ltsmip";
+	}
+
+	$cc .= " -mno-abicalls -fno-pic -mabi=" . $bits . $endian;
+	$ld .= $endian;
 
     if ($bits == 64) {
 		$type = ".dword";
-- 
1.6.0.4

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