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Re: Libgcc symbols

To: Zack Weinberg <zackw at stanford dot edu>
Subject: Re: Libgcc symbols
From: Richard Henderson <rth at redhat dot com>
Date: Tue, 17 Apr 2001 11:23:34 -0700
Cc: Nix <nix at esperi dot demon dot co dot uk>, gcc at gcc dot gnu dot org
References: <20010413211109J.mitchell@codesourcery.com> <87bspxkqgk.fsf@loki.wkstn.nix> <20010416090821.L339@stanford.edu>

On Mon, Apr 16, 2001 at 09:08:22AM -0700, Zack Weinberg wrote:
> Referenced nowhere, but I'd like to know why it was added in the first
> place before killing it.

I believe Kenner added it in the distant past as a way to reload
the PIC register after a non-local goto or exception receiver.
Which happens to work on Alpha and a few other architectures.

IIRC I removed it much later, as some architectures require the pic
register be loaded in order to perform the call in the first place,
and there are better and shorter ways to reload the PIC register
directly on the affected systems.

r~

References:
- Libgcc symbols
  - From: Mark Mitchell
- Re: Libgcc symbols
  - From: Nix
- Re: Libgcc symbols
  - From: Zack Weinberg

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