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To: Ian Lance Taylor <ian@wasabisystems.com>
Cc: binutils@sourceware.org
Subject: Re: News MIPS option -mno-shared
References: <20041209153403.5294.qmail@gossamer.airs.com>
From: Richard Sandiford <rsandifo@redhat.com>
Date: Thu, 09 Dec 2004 16:41:00 -0000
In-Reply-To: <20041209153403.5294.qmail@gossamer.airs.com> (Ian Lance
 Taylor's message of "9 Dec 2004 10:34:03 -0500")
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Ian Lance Taylor <ian@wasabisystems.com> writes:
> This patch adds a new option to the MIPS assembler: -mno-shared.
> Normally the .cpload pseudo-op generates code which looks like this:
>
> 	lui	$gp,%hi(_gp_disp)
> 	addiu	$gp,$gp,%lo(_gp_disp)
> 	addu	$gp,$gp,.cpload argument
>
> With -mno-shared, the .cpload pseudo-op will generate code that looks
> like this:
>
> 	lui	$gp,%hi(_gp)
> 	addiu	$gp,$gp,%lo(_gp)
>
> The idea is that you can use -KPIC -mno-shared and get code which
> still uses the usual Unix calling convention, but is slightly more
> efficient at each function entry.

Yeah, this has been on my to-do list for a while ;)  Are you going to
do the same thing for n32 or are you only interested in o32?

FWIW, the patch looks good to me if it's o32 only.

Richard