LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Russell King <rmk+lkml@arm.linux.org.uk>
To: David Howells <dhowells@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux Arch Mailing List <linux-arch@vger.kernel.org>,
	David Brownell <dbrownell@users.sourceforge.net>
Subject: Re: [PATCH 1/2] Add C99-style constructor macros for specific-sized integers
Date: Mon, 3 Mar 2008 11:43:10 +0000	[thread overview]
Message-ID: <20080303114310.GA28139@flint.arm.linux.org.uk> (raw)
In-Reply-To: <8260.1204541852@redhat.com>

On Mon, Mar 03, 2008 at 10:57:32AM +0000, David Howells wrote:
> H. Peter Anvin <hpa@zytor.com> wrote:
> 
> > +#define S8_C(x)	 x
> > +#define U8_C(x)  x ## U
> > +#define S16_C(x) x
> > +#define U16_C(x) x ## U
> > +#define S32_C(x) x
> > +#define U32_C(x) x ## U
> > +#define S64_C(x) x ## LL
> > +#define U64_C(x) x ## ULL
> 
> And #if defined(__ASSEMBLY__), just splat x through as is.

We already have something like this on ARM - include/asm-arm/memory.h

/*
 * Allow for constants defined here to be used from assembly code
 * by prepending the UL suffix only with actual C code compilation.
 */
#ifndef __ASSEMBLY__
#define UL(x) (x##UL)
#else
#define UL(x) (x)
#endif

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:

  reply	other threads:[~2008-03-03 11:46 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-03  0:09 H. Peter Anvin
2008-03-03  0:09 ` [PATCH 2/2] Use U64_C() instead of casts in kernel/time.c H. Peter Anvin
2008-03-03  2:38 ` [PATCH 1/2] Add C99-style constructor macros for specific-sized integers Matthew Wilcox
2008-03-03  4:43   ` H. Peter Anvin
2008-03-03  6:20     ` Al Viro
2008-03-03  6:12       ` H. Peter Anvin
2008-03-03  6:32         ` Al Viro
2008-03-03  6:28           ` H. Peter Anvin
2008-03-03  3:20 ` Segher Boessenkool
2008-03-03  4:14   ` David Brownell
2008-03-03  4:50     ` H. Peter Anvin
2008-03-03  4:45   ` H. Peter Anvin
2008-03-03 20:23     ` Segher Boessenkool
2008-03-03 10:57 ` David Howells
2008-03-03 11:43   ` Russell King [this message]
2008-03-03 12:40     ` Sam Ravnborg
2008-03-03 17:03       ` H. Peter Anvin
2008-03-03 12:15   ` David Howells

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20080303114310.GA28139@flint.arm.linux.org.uk \
    --to=rmk+lkml@arm.linux.org.uk \
    --cc=akpm@linux-foundation.org \
    --cc=dbrownell@users.sourceforge.net \
    --cc=dhowells@redhat.com \
    --cc=hpa@zytor.com \
    --cc=linux-arch@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=torvalds@linux-foundation.org \
    --subject='Re: [PATCH 1/2] Add C99-style constructor macros for specific-sized integers' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).