mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-03 02:11:08 +00:00
057c783bca
The current ELF_MACHINE_LOAD_ADDRESS used by the generic function pointer code was not safe for use before relocation. The macro has been rewritten to use only PC relative loads. 2009-11-15 Carlos O'Donell <carlos@codesourcery.com> * sysdeps/hppa/dl-fptr.h: Update copyright year. Reduce ELF_MACHINE_BOOT_FPTR_TABLE_LEN to 64. Implement ELF_MACHINE_LOAD_ADDRESS using PC relative loads.
38 lines
1.4 KiB
C
38 lines
1.4 KiB
C
/* Function descriptors. HPPA version.
|
|
Copyright (C) 2003, 2009 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#ifndef dl_hppa_fptr_h
|
|
#define dl_hppa_fptr_h 1
|
|
|
|
#include <sysdeps/generic/dl-fptr.h>
|
|
|
|
/* There are currently 33 dynamic symbols in ld.so.
|
|
ELF_MACHINE_BOOT_FPTR_TABLE_LEN needs to be at least that big. */
|
|
#define ELF_MACHINE_BOOT_FPTR_TABLE_LEN 64
|
|
|
|
#define ELF_MACHINE_LOAD_ADDRESS(var, symbol) \
|
|
asm ( \
|
|
" b,l 1f,%0\n" \
|
|
" depi 0,31,2,%0\n" \
|
|
"1: addil L'" #symbol " - ($PIC_pcrel$0 - 8),%0\n" \
|
|
" ldo R'" #symbol " - ($PIC_pcrel$0 - 12)(%%r1),%0\n" \
|
|
: "=&r" (var) : : "r1");
|
|
|
|
#endif /* !dl_hppa_fptr_h */
|