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Re: more optimizations

From: Ulrich Drepper <drepper at redhat dot com>
To: Richard Henderson <rth at twiddle dot net>
Cc: GNU libc hacker <libc-hacker at sources dot redhat dot com>
Date: 25 Feb 2002 19:39:17 -0800
Subject: Re: more optimizations
References: <m3r8n9hu9y.fsf@myware.mynet> <20020225185926.A25979@twiddle.net>
Reply-to: drepper at redhat dot com (Ulrich Drepper)

Richard Henderson <rth@twiddle.net> writes:

> Incidentally, why does INTDEF not make use of STV_PROTECTED instead?
> Then we wouldn't need to clutter up the source with INTUSE.

This isn't the same.  The handling of STV_PROTECTED is actually more
expensive than a normal symbol lookup because of the requirement of C
that function pointers are unique.  And function pointers in this case
would be the address of the PLT entry.  Look into elf/dl-lookup.c to
see what hoops we have to jump through.

-- 
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Ulrich Drepper  \    ,-------------------'   \  Sunnyvale, CA 94089 USA
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References:
- more optimizations
  - From: Ulrich Drepper
- Re: more optimizations
  - From: Richard Henderson

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