From: Jim Wilson <wilson@specifix.com>
To: william_lei@ali.com.tw
Cc: linux-mips@linux-mips.org
Subject: Re: How to emulate lw/sw instruction by lb/sb instruction
Date: Wed, 27 Sep 2006 13:14:11 -0700 [thread overview]
Message-ID: <1159388051.3181.6.camel@localhost.localdomain> (raw)
In-Reply-To: <OFCDEA2C7E.BF7FD296-ON482571F4.0039233C-482571F4.003A3A12@LocalDomain>
On Mon, 2006-09-25 at 18:35 +0800, william_lei@ali.com.tw wrote:
> Because there are some aligned instruction will load/store from/to
> unaligned base address in some module,such as "lw t0,56(sp) ##sp is odd
> address"
You are better off fixing your code. SP must always be aligned to an 8
byte boundary minimum, 16 bytes for the New ABIs.
Changing gcc would be difficult, and it isn't even clear if such a
change can be made to work. If it is possible, the resulting code will
likely be so bad as to be nearly useless.
--
Jim Wilson, GNU Tools Support, http://www.specifix.com
next prev parent reply other threads:[~2006-09-27 20:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <001401c6e07e$8b07c080$10eca8c0@grendel>
2006-09-25 10:35 ` How to emulate lw/sw instruction by lb/sb instruction william_lei
2006-09-25 16:11 ` Maciej W. Rozycki
2006-09-27 20:14 ` Jim Wilson [this message]
2006-09-25 0:41 william_lei
2006-09-25 6:03 ` Florian Fainelli
2006-09-25 10:49 ` Ulrich Eckhardt
2006-09-25 11:05 ` Ralf Baechle
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