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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.
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Copyright (C) 2003, 2009 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef dl_hppa_fptr_h
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#define dl_hppa_fptr_h 1
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#include <sysdeps/generic/dl-fptr.h>
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/* There are currently 33 dynamic symbols in ld.so.
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ELF_MACHINE_BOOT_FPTR_TABLE_LEN needs to be at least that big. */
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#define ELF_MACHINE_BOOT_FPTR_TABLE_LEN 64
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#define ELF_MACHINE_LOAD_ADDRESS(var, symbol) \
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asm ( \
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" b,l 1f,%0\n" \
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" depi 0,31,2,%0\n" \
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"1: addil L'" #symbol " - ($PIC_pcrel$0 - 8),%0\n" \
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" ldo R'" #symbol " - ($PIC_pcrel$0 - 12)(%%r1),%0\n" \
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: "=&r" (var) : : "r1");
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#endif /* !dl_hppa_fptr_h */
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