From: "Maciej W. Rozycki" <macro@linux-mips.org>
To: cgd@broadcom.com
Cc: echristo@redhat.com, newlib@sources.redhat.com,
binutils@sources.redhat.com
Subject: Re: [patch] modify crt0.S for 64-bit address targets
Date: Wed, 06 Apr 2005 11:05:00 -0000 [thread overview]
Message-ID: <Pine.LNX.4.61L.0504061152001.14106@blysk.ds.pg.gda.pl> (raw)
In-Reply-To: <yov53bu4767a.fsf@xl-sj1-02.sj.broadcom.com>
On Wed, 5 Apr 2005 cgd@broadcom.com wrote:
> I'm probably confused/mistaken but... i thought 'la' was supposed to
> generate a 32-bit address (and dla generate a 64-bit address)? Or
> maybe they always generate the address of the ABI in use? I
> forget... so much change.
AFAIK, the only reason for both "dla" and "la" to exist is history and
compatibility with existing code -- there is no need to encode the address
size in the mnemonic as its already implied by the ABI in use.
Therefore, as far as gas is concerned, both expand to the same code --
it's just they generate different warning messages and for different
conditions: "dla" complains about being used for ABIs that have 32-bit
registers and "la" does that for ones that have 64-bit addresses.
Maciej
next prev parent reply other threads:[~2005-04-06 11:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1112768205.5493.2.camel@localhost.localdomain>
[not found] ` <mailpost.1112768909.17118@news-sj1-1>
2005-04-06 6:49 ` cgd
2005-04-06 11:05 ` Maciej W. Rozycki [this message]
2005-04-06 11:22 ` Thiemo Seufer
2005-04-06 14:40 ` Maciej W. Rozycki
2005-04-06 18:37 ` Eric Christopher
2005-04-06 19:31 ` Paul Koning
2005-04-06 19:35 ` Ian Lance Taylor
2005-04-06 21:35 ` Eric Christopher
2005-04-06 18:51 cgd
2005-04-06 19:01 ` Eric Christopher
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