From: Eric Botcazou <ebotcazou@adacore.com>
To: Alan Modra <amodra@bigpond.net.au>
Cc: binutils@sources.redhat.com, Jonathan Larmour <jifl@ecoscentric.com>
Subject: Re: gc sections and .eh_frame
Date: Tue, 28 Jun 2005 07:40:00 -0000 [thread overview]
Message-ID: <200506280940.28723.ebotcazou@adacore.com> (raw)
In-Reply-To: <20050628025830.GA8706@bubble.grove.modra.org>
> > I think it doesn't work (alone) either, because you unconditionally mark
> > all .gcc_except_table* sections, which themselves point to the functions.
>
> That doesn't make any difference, because .gcc_except_table* is marked
> via KEEP() in the linker script. So I don't think you need anything
> more than the patch I posted.
That's not quite true, .gcc_except_table is indeed marked as KEEP, but
not .gcc_except_table.* :-)
That's the crux of the mechanism: an unpatched (non broken) compiler will only
emit .gcc_except_table. But a patched compiler (i.e. the AdaCore compiler or
the FSF compiler + http://gcc.gnu.org/ml/gcc-patches/2004-03/msg01433.html)
will emit .gcc_except_table.* with -ffunction-sections, making it possible to
have a working --gc-sections for languages with EH.
--
Eric Botcazou
next prev parent reply other threads:[~2005-06-28 7:40 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-07 17:48 Jonathan Larmour
2005-06-07 18:00 ` Eric Botcazou
2005-06-07 18:11 ` Jonathan Larmour
2005-06-08 2:09 ` Alan Modra
2005-06-08 11:13 ` Jonathan Larmour
2005-06-08 19:10 ` Richard Henderson
2005-06-08 19:29 ` Jonathan Larmour
2005-06-08 19:32 ` Richard Henderson
2005-06-08 21:36 ` Jonathan Larmour
2005-06-08 22:02 ` Richard Henderson
2005-06-09 10:33 ` Jonathan Larmour
2005-06-09 11:38 ` Eric Botcazou
2005-06-09 12:07 ` Jonathan Larmour
2005-06-09 12:49 ` Alan Modra
2005-06-09 13:02 ` Eric Botcazou
2005-06-09 13:50 ` Jonathan Larmour
2005-06-09 14:22 ` Eric Botcazou
2005-06-09 14:33 ` Jonathan Larmour
2005-06-10 4:23 ` Alan Modra
2005-06-10 6:46 ` Eric Botcazou
2005-06-10 11:49 ` Jonathan Larmour
2005-06-10 11:55 ` Eric Botcazou
2005-06-10 12:09 ` Alan Modra
2005-06-10 12:51 ` Jonathan Larmour
2005-06-10 13:44 ` Eric Botcazou
2005-06-10 14:26 ` Jonathan Larmour
2005-06-10 14:50 ` Eric Botcazou
2005-06-10 14:58 ` Jonathan Larmour
2005-06-10 15:13 ` Eric Botcazou
2005-06-22 11:46 ` Jonathan Larmour
2005-06-25 17:28 ` Alan Modra
2005-06-27 11:56 ` Eric Botcazou
2005-06-28 2:58 ` Alan Modra
2005-06-28 7:40 ` Eric Botcazou [this message]
2005-06-28 11:42 ` Alan Modra
2005-06-28 11:58 ` Eric Botcazou
2005-06-29 1:24 ` Alan Modra
2005-06-29 6:52 ` Eric Botcazou
2005-06-29 12:45 ` Jonathan Larmour
2005-06-29 13:54 ` Alan Modra
2005-06-29 22:31 ` Jonathan Larmour
2005-06-30 22:28 ` Alan Modra
2005-07-01 13:31 ` Jonathan Larmour
2005-07-04 4:50 ` Alan Modra
2005-07-04 10:55 ` Jonathan Larmour
2005-07-26 11:30 ` Alan Modra
2005-07-26 12:05 ` Alan Modra
2005-08-25 0:06 ` Jim Blandy
2005-08-25 0:48 ` Alan Modra
2005-06-10 13:35 ` Eric Botcazou
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