From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752997Ab3KAFpl (ORCPT ); Fri, 1 Nov 2013 01:45:41 -0400 Received: from us02smtp1.synopsys.com ([198.182.60.75]:42651 "EHLO vaxjo.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751611Ab3KAFpj (ORCPT ); Fri, 1 Nov 2013 01:45:39 -0400 Message-ID: <52733FEC.4010807@synopsys.com> Date: Fri, 1 Nov 2013 11:15:16 +0530 From: Vineet Gupta User-Agent: Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: Chen Gang CC: James Hogan , Al Viro , Arnd Bergmann , "linux-kernel@vger.kernel.org" , Linux-Arch , "Max Filippov" , Sam Ravnborg , Tim Abbott , Joe Perches , Michal Marek , David Howells Subject: Re: [PATCH v2] arch: use ASM_NL instead of ';' for assembler new line character in the macro References: <526E3CE2.2070405@asianux.com> <526E6A92.6090301@synopsys.com> <526F09B8.9030202@asianux.com> <526F11C0.1030809@asianux.com> <526F149A.3000306@asianux.com> In-Reply-To: <526F149A.3000306@asianux.com> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.12.197.76] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org +CC Sam, Tim, Joe, Michal, David Guys can you please take a look at this patch and suggest the best way to merge. The root cause is some gas ports (including ARC) use ';' for comment (vs. newline) More background at https://lkml.org/lkml/2013/10/24/365 On 10/29/2013 07:21 AM, Chen Gang wrote: > For some assemblers, they use another character as newline in a macro > (e.g. arc uses '`'), so for generic assembly code, need use ASM_NL (a > macro) instead of ';' for it. > > Also need notice about code styles ('\t' for each line). > > > Signed-off-by: Chen Gang > --- > arch/arc/include/asm/linkage.h | 2 ++ > include/linux/linkage.h | 19 ++++++++++++------- > 2 files changed, 14 insertions(+), 7 deletions(-) > > diff --git a/arch/arc/include/asm/linkage.h b/arch/arc/include/asm/linkage.h > index 0283e9e..66ee552 100644 > --- a/arch/arc/include/asm/linkage.h > +++ b/arch/arc/include/asm/linkage.h > @@ -11,6 +11,8 @@ > > #ifdef __ASSEMBLY__ > > +#define ASM_NL ` /* use '`' to mark new line in macro */ > + > /* Can't use the ENTRY macro in linux/linkage.h > * gas considers ';' as comment vs. newline > */ > diff --git a/include/linux/linkage.h b/include/linux/linkage.h > index d3e8ad2..a6a42dd 100644 > --- a/include/linux/linkage.h > +++ b/include/linux/linkage.h > @@ -6,6 +6,11 @@ > #include > #include > > +/* Some toolchains use other characters (e.g. '`') to mark new line in macro */ > +#ifndef ASM_NL > +#define ASM_NL ; > +#endif > + > #ifdef __cplusplus > #define CPP_ASMLINKAGE extern "C" > #else > @@ -75,21 +80,21 @@ > > #ifndef ENTRY > #define ENTRY(name) \ > - .globl name; \ > - ALIGN; \ > - name: > + .globl name ASM_NL \ > + ALIGN ASM_NL \ > + name: > #endif > #endif /* LINKER_SCRIPT */ > > #ifndef WEAK > #define WEAK(name) \ > - .weak name; \ > + .weak name ASM_NL \ > name: > #endif > > #ifndef END > #define END(name) \ > - .size name, .-name > + .size name, .-name > #endif > > /* If symbol 'name' is treated as a subroutine (gets called, and returns) > @@ -98,8 +103,8 @@ > */ > #ifndef ENDPROC > #define ENDPROC(name) \ > - .type name, @function; \ > - END(name) > + .type name, @function ASM_NL \ > + END(name) > #endif > > #endif >