From: "Frank Ch. Eigler" <fche@redhat.com>
To: Ian Lance Taylor <iant@google.com>
Cc: Fumiaki Isoya <isoyaf@gmail.com>, gcc@gcc.gnu.org
Subject: Re: The Extension to ELF
Date: Wed, 08 Aug 2012 13:34:00 -0000 [thread overview]
Message-ID: <20120808133418.GB18489@redhat.com> (raw)
In-Reply-To: <CAKOQZ8wWzn1te8BkeF16ZXmYpnoraH-gY68k6WNR0BwMML9cmQ@mail.gmail.com>
Hi -
On Wed, Aug 08, 2012 at 06:23:52AM -0700, Ian Lance Taylor wrote:
> [...]
> > This has been merged into gnu binutils some time ago, though is not
> > widely known, and only used by a single cgen-based gas port. See the
> > OBJ_COMPLEX_RELC conditionals in gas/*, the BSF_*RELC/STT_RELC logic
> > in bfd/*.
>
> Thanks, I was trying to remember that.
>
> It is perhaps also worth noting that the IEEE-695 object file format
> supports arbitrary expressions in a number of different ways,
> including for relocation calculations. The format is not widely used
> today, for more or less that reason.
It is quite different from ELF for sure. One certainly wouldn't want
to use such a complex-relocation facility unnecessarily - when the
hard-coded normal ones will do the job. But if you need something
more, and are willing to pay the longer linking time (than what?),
it's worth considering.
- FChE
next prev parent reply other threads:[~2012-08-08 13:34 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-08 5:39 Fumiaki Isoya
2012-08-08 6:32 ` Ian Lance Taylor
2012-08-08 7:47 ` Fumiaki Isoya
2012-08-08 11:23 ` Frank Ch. Eigler
2012-08-08 13:24 ` Ian Lance Taylor
2012-08-08 13:34 ` Frank Ch. Eigler [this message]
2012-08-08 15:42 ` Fumiaki Isoya
2012-08-08 16:23 ` Frank Ch. Eigler
2012-08-08 17:36 ` Fumiaki Isoya
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