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Re: [PATCH] Nuke another 21 .plt slots

From: Roland McGrath <roland at frob dot com>
To: Jakub Jelinek <jakub at redhat dot com>
Cc: Ulrich Drepper <drepper at redhat dot com>,Glibc hackers <libc-hacker at sources dot redhat dot com>
Date: Mon, 5 Aug 2002 18:11:55 -0400 (EDT)
Subject: Re: [PATCH] Nuke another 21 .plt slots

Thanks!  I put those in.  However, my PLT count does not match yours.  I
get 169 in a build with TLS support, and I think that is only one more than
without TLS.

I have been counting using this script (it gives a list of symbols; pipe it
to wc -l), which counts only PLT slots for symbols defined in libc itself,
and omits the malloc functions that are explicit exceptions.  That count is
now 121.

#!/bin/sh

goodones='__libc_free
__libc_malloc
__libc_memalign
__libc_realloc
free
calloc
malloc
realloc'

readelf -rW libc.so | awk '/JUMP_SLOT/ && $4 != "00000000" { print $5 }' |
fgrep -vx "$goodones" | sort

Follow-Ups:
- Re: [PATCH] Nuke another 21 .plt slots
  - From: Jakub Jelinek

References:
- [PATCH] Nuke another 21 .plt slots
  - From: Jakub Jelinek

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