linux-kernel - Re: [RFC-PATCH] lib: add byteorder helpers for the aligned case

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Fri, 16 May 2008 17:37:56 -0700
From:	Harvey Harrison <harvey.harrison@...il.com>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Bryan Wu <cooloney@...nel.org>, Jie Zhang <jie.zhang@...log.com>,
	Oliver Neukum <oliver@...kum.org>, david-b@...bell.net,
	greg@...ah.com, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC-PATCH] lib: add byteorder helpers for the aligned case

On Fri, 2008-05-16 at 20:35 -0400, Alan Stern wrote:
> On Fri, 16 May 2008, Harvey Harrison wrote:
> 
> > +static inline void put_le16(u16 val, void *ptr)
> > +{
> > +	*(__le16 *)ptr = cpu_to_le16(val);
> > +}
> 
> Is this able to do the byte rearrangement at compile time if val is a 
> compile-time constant?  I imagine it would.
> 

Yes, the cpu_to_le/be functions to get optimized if they are passed a
compile time constant.


Harvey

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/