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/* Copyright (C) 2022 Ramin Seyed Moussavi
* An getauxval() function compatible with the glibc auxv.h
* that is used by uClibc-ng.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, see
* <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <ldso.h>
#include <sys/auxv.h>
unsigned long int __getauxval (unsigned long int __type)
{
// Requested value part of cached subset of auxiliary vector?
if (__type < AUX_MAX_AT_ID) {
if (_dl_auxvt[__type].a_type == __type)
return _dl_auxvt[__type].a_un.a_val;
__set_errno (ENOENT);
return 0;
}
// Otherwise we have to iterate the auxiliary vector.
for (ElfW(auxv_t) *entry = _dl_auxv_start; entry->a_type != AT_NULL; entry++)
if (entry->a_type == __type)
return entry->a_un.a_val;
__set_errno (ENOENT);
return 0;
}
weak_alias(__getauxval, getauxval)
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