Date: Sun, 27 Dec 1998 13:13:30 -0500
From: Ian Lance Taylor <ian@cygnus.com>
To: kaleb@ics.com
Cc: hackers@FreeBSD.ORG, bug-gnu-utils@gnu.org
Subject: Re: ld (bfd): wrong function names for ELF shared library DT_{INIT,FINI}
Message-ID: <199812271813.NAA29995@subrogation.cygnus.com>
In-Reply-To: <36865D18.1CFBAE39@ics.com> (kaleb@ics.com)
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Date: Sun, 27 Dec 1998 11:15:21 -0500
From: "Kaleb S. KEITHLEY" <kaleb@ics.com>
The ELF specification says that the names of the DT_{INIT,FINI}
functions in shared libraries are named .init() and .fini(), not _init()
and _fini().
No, it discusses section names, not symbol names. The ELF spec does
not say how the DT_INIT and DT_FINI tags should be set. In general,
the ELF spec describes how to execute an ELF object, not how to create
one. That is, it specifies kernel behaviour, not linker behaviour.
The original SVR4 linker automatically used _init and _fini for
DT_INIT and DT_FINI. The GNU linker is compatible. Other ELF based
linkers, such as the Irix 6 linker, act differently.
See the print editions of the System V ABI (where ELF is defined) or
http://www.sco.com/developer/gabi/ch4.sheader.html#special_sections for
more information.
Read it again. It's talking about section names.
The symbol names _init and _fini conventionally appear in crti.o on
SVR4 systems, and serve to indicate the start of the .init and .fini
sections.
Ian
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