From: Ian Lance Taylor <ian@zembu.com>
To: devans@cygnus.com
Cc: bfd@cygnus.com
Subject: Re: arm questions
Date: Thu, 15 Apr 1999 11:01:00 -0000 [thread overview]
Message-ID: <19990415180136.2600.qmail@daffy.airs.com> (raw)
In-Reply-To: <199904151738.KAA02138@canuck.cygnus.com.>
Date: Thu, 15 Apr 1999 10:38:25 -0700
From: Doug Evans <devans@cygnus.com>
Two random questions.
1)
elfarm-oabi.c uses USE_RELA
elfarm-nabi.c uses USE_REL
That seems rather backwards, doesn't it?
I'd expect a new version of an abi to switch from USE_REL to USE_RELA,
but not the other way around.
[not that it can be changed, but rather ... why the switch?]
This is my understanding of the situation. If anybody knows that I am
wrong, please correct me.
The ARM ELF situation is a mess because there were two separate
implementations.
Some folks in England put together ARM GNU/Linux, but they took a very
long time to get the copyright stuff done. For some reason that I do
not know, that implementation used REL rather than RELA relocs.
In the meantime, Cygnus implemented ARM ELF, using RELA relocs.
It's obviously desirable to have a single ARM ELF ABI, and the best
choice is probably the one currently being used for GNU/Linux.
Therefore, when we straightened out the copyright situation, we dumped
the Cygnus RELA implementation in favour of the GNU/Linux REL
implementation.
2)
Whats the R_ARM_THM_XPC22 reloc for?
I dunno. Philip Blundell is on the list. Phil, do you know?
Ian
next prev parent reply other threads:[~1999-04-15 11:01 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-04-15 10:38 Doug Evans
1999-04-15 11:01 ` Ian Lance Taylor [this message]
1999-04-15 11:31 ` Scott Bambrough
1999-04-15 11:47 ` Ian Lance Taylor
1999-04-15 13:29 ` H.J. Lu
1999-04-15 13:59 ` Ian Lance Taylor
1999-04-15 14:15 ` Mixing REL and RELA H.J. Lu
1999-04-15 14:21 ` Ian Lance Taylor
1999-04-15 14:28 ` H.J. Lu
1999-04-15 13:10 ` arm questions H.J. Lu
1999-04-15 13:45 ` Ian Lance Taylor
1999-04-15 13:36 ` Philip Blundell
1999-04-16 0:43 ` Lee Smith
1999-04-16 3:21 ` Toshi Morita
[not found] ` <3.0.5.32.19990416083918.0099b8a0.cygnus.local.bfd@mail1.bateman.arm.com>
1999-04-18 17:10 ` Doug Evans
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