From: Jonathan Larmour <jifl@eCosCentric.com>
To: Eric Botcazou <ebotcazou@adacore.com>
Cc: binutils@sources.redhat.com
Subject: Re: gc sections and .eh_frame
Date: Thu, 09 Jun 2005 12:07:00 -0000 [thread overview]
Message-ID: <42A8311E.5090402@eCosCentric.com> (raw)
In-Reply-To: <200506091337.13080.ebotcazou@adacore.com>
Eric Botcazou wrote:
>>So far, no-one has given any rationalisation for the change. It wasn't
>>posted to this list, so there's no reason given there.
>
>
> Huh... didn't you see the link I posted? Here is it again:
> http://sourceware.org/ml/binutils/2004-03/msg00424.html
I had missed that in your previous reply, my apologies. I also did not
find it in the archives because it was over a month until the time it was
committed.
>>To my eye, the change doesn't seem right - if a section is a dependency
>>of .eh_frame, it needs to be kept. Needing to forcibly KEEP()
>>all .gcc_except_table sections should not have been necessary in the first
>>place.
>
>
> Please read the rationale I had given for the change.
Thank you. However I still fail to understand (my fault I'm sure) why
dependencies of .eh_frame. should not be marked. Surely if the
.gcc_except_table section has been split up into multiple sections,
courtesy of -ffunction-sections, then that's all the more reason to mark
.eh_frame's dependencies?
Can I ask where the used .gcc_except_table.* sections _are_ meant to be
marked? I cannot see anywhere that _bfd_elf_discard_section_eh_frame does
it, for example. Why would .gcc_except_table.* get marked, but .rodata not
get marked for powerpc?
Separately, I still consider it an issue to break existing linker scripts
(and the failure mode is very obscure and difficult to track down when you
encounter it, I can tell you!). That doesn't bother me personally since
I've fixed mine (other than ppc), but for others it doesn't seem like a
good idea to do casually.
Jifl
--
eCosCentric http://www.eCosCentric.com/ The eCos and RedBoot experts
--["No sense being pessimistic, it wouldn't work anyway"]-- Opinions==mine
next prev parent reply other threads:[~2005-06-09 12:07 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 [this message]
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
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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