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/* Operating system support for run-time dynamic linker. Linux/PPC version.
Copyright (C) 1997, 1998, 2001 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. */
#include "config.h"
#include "kernel-features.h"
#include <ldsodefs.h>
extern int __cache_line_size;
weak_extern (__cache_line_size)
#define DL_PLATFORM_INIT __aux_init_cache(_dl_auxv)
/* Scan the Aux Vector for the "Data Cache Block Size" entry. If found
verify that the static extern __cache_line_size is defined by checking
for not NULL. If it is defined then assign the cache block size
value to __cache_line_size. */
static inline void
__aux_init_cache (ElfW(auxv_t) *av)
{
for (; av->a_type != AT_NULL; ++av)
switch (av->a_type)
{
case AT_DCACHEBSIZE:
{
int *cls = & __cache_line_size;
if (cls != NULL)
*cls = av->a_un.a_val;
}
break;
}
}
#ifndef __ASSUME_STD_AUXV
/* The PowerPC's auxiliary argument block gets aligned to a 16-byte
boundary. This is history and impossible to change compatibly. */
#define DL_FIND_ARG_COMPONENTS(cookie, argc, argv, envp, auxp) \
do { \
char **_tmp; \
size_t _test; \
(argc) = *(long int *) cookie; \
(argv) = (char **) cookie + 1; \
(envp) = (argv) + (argc) + 1; \
for (_tmp = (envp); *_tmp; ++_tmp) \
continue; \
/* The following '++' is important! */ \
++_tmp; \
\
_test = (size_t)_tmp; \
_test = (_test + 0xf) & ~0xf; \
/* Under some circumstances, MkLinux (up to at least DR3a5) \
omits the padding. To work around this, we make a \
basic sanity check of the argument vector. Of \
course, this means that in future, the argument \
vector will have to be laid out to allow for this \
test :-(. */ \
if (((ElfW(auxv_t) *)_test)->a_type <= 0x10) \
_tmp = (char **)_test; \
(auxp) = (ElfW(auxv_t) *) _tmp; \
} while (0)
#endif
#include <sysdeps/unix/sysv/linux/dl-sysdep.c>
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