This is the mail archive of the libc-ports@sources.redhat.com mailing list for the libc-ports project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: [PATCH roland/arm-memchr] ARM: Make armv6t2 memchr implementation usable without Thumb.

From: Richard Henderson <rth at twiddle dot net>
To: "Joseph S. Myers" <joseph at codesourcery dot com>
Cc: Roland McGrath <roland at hack dot frob dot com>, libc-ports at sourceware dot org
Date: Mon, 11 Mar 2013 23:09:09 -0700
Subject: Re: [PATCH roland/arm-memchr] ARM: Make armv6t2 memchr implementation usable without Thumb.
References: <20130311233120.C2F1B2C083@topped-with-meat.com> <Pine.LNX.4.64.1303120026480.21125@digraph.polyomino.org.uk>

On 2013-03-11 17:30, Joseph S. Myers wrote:

On Mon, 11 Mar 2013, Roland McGrath wrote:

This changes the memchr implementation to be usable without Thumb.
I'm not clear on how the register allocation changes relate to making this
implementation usable without Thumb.


This re ldrd.  ARM mode requires r2 = r + 1, and r even.
Thumb2 allows arbitrary r2.

r~

Follow-Ups:
- Re: [PATCH roland/arm-memchr] ARM: Make armv6t2 memchr implementation usable without Thumb.
  - From: Joseph S. Myers

References:
- [PATCH roland/arm-memchr] ARM: Make armv6t2 memchr implementation usable without Thumb.
  - From: Roland McGrath
- Re: [PATCH roland/arm-memchr] ARM: Make armv6t2 memchr implementation usable without Thumb.
  - From: Joseph S. Myers

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]