From: Paul Brook <paul@codesourcery.com>
To: binutils@sources.redhat.com
Cc: Julian Brown <julian@codesourcery.com>
Subject: Re: [PATCH] Enable use of ARMv5t BLX for Thumb-mode calls via PLT
Date: Mon, 11 Apr 2005 19:39:00 -0000 [thread overview]
Message-ID: <200504112039.18259.paul@codesourcery.com> (raw)
In-Reply-To: <425AC810.5040408@codesourcery.com>
On Monday 11 April 2005 19:55, Julian Brown wrote:
> Hi,
>
> This patch allows the ARMv5t Thumb BLX instruction to be used
> (optionally) to call PLT entries, which should provide a slight speed
> boost. A previous, SymbianOS-specific version of the patch was posted here:
>
> http://sourceware.org/ml/binutils/2005-03/msg00433.html
>
> With this patch, the option "--use-thumb-blx" can be passed to the
> linker to enable the use of the BLX instruction when the target supports
> it. The format of the PLT itself isn't changed by this patch: there is
> still a Thumb stub before each ARM PLT entry, but it is now unused. The
> ARM mode entry is called directly instead.
I'd call the option to --use-blx, than way we can use it for other [not yet
written] patches to eliminate interworking stubs.
I can't approve the patch, but it looks ok to me.
Paul
prev parent reply other threads:[~2005-04-11 19:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-11 18:55 Julian Brown
2005-04-11 19:00 ` Daniel Jacobowitz
2005-04-12 21:14 ` Julian Brown
2005-04-15 10:51 ` Nick Clifton
2005-04-11 19:39 ` Paul Brook [this message]
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