glibc/sysdeps/aarch64/multiarch/strlen_generic.S

40 lines
1.4 KiB
ArmAsm

/* A Generic Optimized strlen implementation for AARCH64.
Copyright (C) 2018-2020 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
<https://www.gnu.org/licenses/>. */
/* The actual strlen code is in ../strlen.S. If we are building libc this file
defines __strlen_generic. Otherwise the include of ../strlen.S will define
the normal __strlen entry points. */
#include <sysdep.h>
#if IS_IN (libc)
# define STRLEN __strlen_generic
/* Do not hide the generic version of strlen, we use it internally. */
# undef libc_hidden_builtin_def
# define libc_hidden_builtin_def(name)
# ifdef SHARED
/* It doesn't make sense to send libc-internal strlen calls through a PLT. */
.globl __GI_strlen; __GI_strlen = __strlen_generic
# endif
#endif
#include "../strlen.S"