From: Dan Malek <dan@mvista•com>
To: Jones Madhuri <madhuri_jones@yahoo•com>
Cc: linuxppc-embedded@lists•linuxppc.org
Subject: Re: What does instruction LA mean?
Date: Wed, 28 Mar 2001 01:19:10 -0500 [thread overview]
Message-ID: <3AC1825E.E61C485A@mvista.com> (raw)
In-Reply-To: 20010328053251.30486.qmail@web13605.mail.yahoo.com
Jones Madhuri wrote:
> I am novice in Power PC assembly code and I am trying
> compile in following code (written by someone else)
> into head_8xx.S.
Novice or otherwise, you shouldn't be placing any code in
head_8xx.S. It's a guarantee you won't get Linux to boot.
> mfspr r3, IC_CST
> LA r4, IC_CST_LEN
>
> However the hardhat assembler doesn't understand the
> mnemonic LA,
Because there is no such instruction. It looks like a
macro that will result in the two instruction pair:
lis r4, IC_CST_LEN@h
ori r4, r4, IC_CST_LEN@l
You shouldn't be messing around with those cache
management registers......
-- Dan
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2001-03-28 6:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-28 5:32 What does instruction LA mean? Jones Madhuri
2001-03-28 6:19 ` Dan Malek [this message]
2001-03-29 4:06 ` Srinivas Rao.M
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