This is the mail archive of the newlib@sourceware.org mailing list for the newlib 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: change RTEMS definition of ALIGNBYTES

From: Jeff Johnston <jjohnstn at redhat dot com>
To: Joel Sherrill <joel dot sherrill at oarcorp dot com>
Cc: "newlib at sources dot redhat dot com" <newlib at sources dot redhat dot com>
Date: Fri, 19 Jun 2009 14:15:51 -0400
Subject: Re: change RTEMS definition of ALIGNBYTES
References: <4A3BA277.4010008@oarcorp.com>

Patch checked in.

-- Jeff J.

Joel Sherrill wrote:

Hi,

The definition of ALIGNBYTES for RTEMS was not strict
enough.  If you use it to align a double or structure
gcc wants to use "load two word" instructions
(e.g. SPARC ldd), then you will get a fault.
I saw this with a port of BSD ls to RTEMS.

FWIW the linux version uses the sizeof(int) also.
I don't know if it will potentially trip the same
issue.

Please apply. Thanks.

2009-06-19 Joel Sherrill <joel.sherrill@oarcorp.com>

   * libc/sys/rtems/machine/param.h: Change ALIGNBYTES
   so it can point to an aligned structure or double.

References:
- change RTEMS definition of ALIGNBYTES
  - From: Joel Sherrill

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