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Re: [Gcl-devel] Re: ia64 function descriptors and unexec

From: Camm Maguire
Subject: Re: [Gcl-devel] Re: ia64 function descriptors and unexec
Date: 29 Oct 2003 12:36:42 -0500
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2

Greetings, and thanks for your reply!

Andreas Schwab <address@hidden> writes:

> Camm Maguire <address@hidden> writes:
> > To sum up the previous discussion, the ia64 linux ABI apparently
> > offers no opportunity for ld.so to ensure that function descriptors
> > remain constant, even over successive executions of the same binary on
> > the same machine.
> There is no problem with statically initialized function pointers, only
> for assigned pointer at runtime.  The function descriptors for the former
> are generated at compile time and won't ever change.

OK, but I need saved runtime-initialized function pointers.  Do you
have either a reference for how xemacs has handled this, or a contact
person who might know?  Was there ever a GNU emacs obstacle on ia64
linux, or am I confusing the situation with xemacs?

Take care,

> > I believe that this issue stood in the way of an emacs port to ia64
> > linux for some time,
> There is no such problem with GNU Emacs.  Only XEmacs has this problem.
> Andreas.
> -- 
> Andreas Schwab, SuSE Labs, address@hidden
> SuSE Linux AG, Deutschherrnstr. 15-19, D-90429 N├╝rnberg
> Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
> "And now for something completely different."
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Camm Maguire                                            address@hidden
"The earth is but one country, and mankind its citizens."  --  Baha'u'llah

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