glibc/sysdeps/nacl/nacl_interface_query.c

50 lines
1.5 KiB
C

/* NaCl function exposing IRT interface query.
Copyright (C) 2015-2016 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, see
<http://www.gnu.org/licenses/>. */
#include <nacl-interfaces.h>
#include <ldsodefs.h>
#ifdef SHARED
/* We can define this trivially using IFUNC rather than a wrapper
because we absolutely require that we get the IRT interface query
function pointer via AT_SYSINFO. */
extern TYPE_nacl_irt_query nacl_interface_query_ifunc (void)
asm ("nacl_interface_query");
TYPE_nacl_irt_query
nacl_interface_query_ifunc (void)
{
return &__nacl_irt_query;
}
asm (".type nacl_interface_query, %gnu_indirect_function");
#else
/* In the static library, using IFUNC is just extra overhead. */
size_t
nacl_interface_query (const char *interface_ident,
void *table, size_t tablesize)
{
return __nacl_irt_query (interface_ident, table, tablesize);
}
#endif