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1998-04-12 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c (DL_FIND_ARG_COMPONENTS): Always initialize auxv. Patch by Mark Hatle <fray@kernel.crashing.org>.
50 lines
2 KiB
C
50 lines
2 KiB
C
/* Operating system support for run-time dynamic linker. Linux/PPC version.
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Copyright (C) 1997, 1998 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* The PowerPC's auxiliary argument block gets aligned to a 16-byte
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boundary. This is history and impossible to change compatibly. */
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#define DL_FIND_ARG_COMPONENTS(cookie, argc, argv, envp, auxp) \
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do { \
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char **_tmp; \
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(argc) = *(long *) cookie; \
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(argv) = (char **) cookie + 1; \
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(envp) = (argv) + (argc) + 1; \
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for (_tmp = (envp); *_tmp; ++_tmp) \
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continue; \
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/* The following '++' is important! */ \
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(auxp) = ++_tmp; \
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if (*_tmp == 0) \
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{ \
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size_t _test = (size_t)_tmp; \
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_test = _test + 0xf & ~0xf; \
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/* When ld.so is being run directly, there is no \
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alignment (and no argument vector), so we make a \
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basic sanity check of the argument vector. Of \
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course, this means that in future, the argument \
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vector will have to be laid out to allow for this \
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test :-(. */ \
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if (((ElfW(auxv_t) *)_test)->a_type <= AT_PHDR) \
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(auxp) = (ElfW(auxv_t) *) _tmp; \
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} \
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} while (0)
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#include <sysdeps/unix/sysv/linux/dl-sysdep.c>
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