linux-kernel - [PATCH 5/5] MIPS: LLVMLinux: Silence unicode warnings when preprocessing assembly.

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Message-ID: <1422970639-7922-6-git-send-email-daniel.sanders@imgtec.com>
Date:	Tue, 3 Feb 2015 13:37:19 +0000
From:	Daniel Sanders <daniel.sanders@...tec.com>
To:	unlisted-recipients:; (no To-header on input)
CC:	Toma Tabacu <toma.tabacu@...tec.com>,
	Daniel Sanders <daniel.sanders@...tec.com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Paul Burton <paul.burton@...tec.com>,
	Paul Bolle <pebolle@...cali.nl>,
	"Steven J. Hill" <Steven.Hill@...tec.com>,
	Manuel Lauss <manuel.lauss@...il.com>,
	Jim Quinlan <jim2101024@...il.com>,
	<linux-mips@...ux-mips.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 5/5] MIPS: LLVMLinux: Silence unicode warnings when preprocessing assembly.

From: Toma Tabacu <toma.tabacu@...tec.com>

Differentiate the 'u' GAS .macro argument from the '\u' C preprocessor unicode
escape sequence by renaming it to '_u'.

When the 'u' argument is evaluated, we end up writing '\u', which causes
clang to emit -Wunicode warnings.

This silences a couple of -Wunicode warnings reported by clang.
The changed code can be preprocessed without warnings by both gcc and clang.

Signed-off-by: Toma Tabacu <toma.tabacu@...tec.com>
Signed-off-by: Daniel Sanders <daniel.sanders@...tec.com>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: Paul Burton <paul.burton@...tec.com>
Cc: Paul Bolle <pebolle@...cali.nl>
Cc: "Steven J. Hill" <Steven.Hill@...tec.com>
Cc: Manuel Lauss <manuel.lauss@...il.com>
Cc: Jim Quinlan <jim2101024@...il.com>
Cc: linux-mips@...ux-mips.org
Cc: linux-kernel@...r.kernel.org
---
 arch/mips/include/asm/asmmacro.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h
index 6caf876..c657932 100644
--- a/arch/mips/include/asm/asmmacro.h
+++ b/arch/mips/include/asm/asmmacro.h
@@ -200,12 +200,12 @@
 	.word	0x41600021 | (\reg << 16)
 	.endm
 
-	.macro	MFTR	rt=0, rd=0, u=0, sel=0
-	 .word	0x41000000 | (\rt << 16) | (\rd << 11) | (\u << 5) | (\sel)
+	.macro	MFTR	rt=0, rd=0, _u=0, sel=0
+	 .word	0x41000000 | (\rt << 16) | (\rd << 11) | (\_u << 5) | (\sel)
 	.endm
 
-	.macro	MTTR	rt=0, rd=0, u=0, sel=0
-	 .word	0x41800000 | (\rt << 16) | (\rd << 11) | (\u << 5) | (\sel)
+	.macro	MTTR	rt=0, rd=0, _u=0, sel=0
+	 .word	0x41800000 | (\rt << 16) | (\rd << 11) | (\_u << 5) | (\sel)
 	.endm
 
 #ifdef TOOLCHAIN_SUPPORTS_MSA
-- 
2.1.4

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