1/* wcsnlen dispatch for RTLD and non-multiarch .c files
2   Copyright (C) 2022 Free Software Foundation, Inc.
3   This file is part of the GNU C Library.
4
5   The GNU C Library is free software; you can redistribute it and/or
6   modify it under the terms of the GNU Lesser General Public
7   License as published by the Free Software Foundation; either
8   version 2.1 of the License, or (at your option) any later version.
9
10   The GNU C Library is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library; if not, see
17   <https://www.gnu.org/licenses/>.  */
18
19/* wcsnlen non-multiarch build is split into two files,
20   wcsnlen-generic.c and wcsnlen.S. The wcsnlen.S build is for
21   ISA level >= 2 uses the optimized assembly implementations in
22   multiarch/wcsnlen*.S.  This must be split into two files because
23   we cannot include C code from assembly or vice versa.  */
24
25#include <isa-level.h>
26
27#if MINIMUM_X86_ISA_LEVEL >= 2
28
29# define WCSNLEN	__wcsnlen
30/* This symbol must stay linked to the name in wcslen.S.  */
31#if IS_IN (rtld)
32# define OVERFLOW_STRLEN	__wcslen
33#else
34# define OVERFLOW_STRLEN	HIDDEN_JUMPTARGET (__wcslen)
35#endif
36
37# define DEFAULT_IMPL_V2	"multiarch/wcsnlen-sse4_1.S"
38# define DEFAULT_IMPL_V3	"multiarch/wcsnlen-avx2.S"
39# define DEFAULT_IMPL_V4	"multiarch/wcsnlen-evex.S"
40
41/* isa-default-impl.h expects DEFAULT_IMPL_V1 to be defined but it
42   should never be used from here.  */
43# define DEFAULT_IMPL_V1	"ERROR -- Invalid ISA IMPL"
44
45# include "isa-default-impl.h"
46
47weak_alias (__wcsnlen, wcsnlen)
48libc_hidden_def (__wcsnlen)
49#endif
50