mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 04:50:07 +00:00
55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/* Multiple versions of memmove.
|
|
Copyright (C) 2016-2024 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/>. */
|
|
|
|
#include <ifunc-memcpy.h>
|
|
|
|
#if HAVE_MEMMOVE_IFUNC
|
|
/* If we don't use ifunc, an alias is defined for memmove
|
|
in sysdeps/s390/memmove-c.c or sysdeps/s390/memcpy.S
|
|
depending on the used default implementation. */
|
|
# undef memmove
|
|
# define memmove __redirect_memmove
|
|
# include <string.h>
|
|
# include <ifunc-resolve.h>
|
|
# undef memmove
|
|
|
|
# if HAVE_MEMMOVE_C
|
|
extern __typeof (__redirect_memmove) MEMMOVE_C attribute_hidden;
|
|
# endif
|
|
|
|
# if HAVE_MEMMOVE_Z13
|
|
extern __typeof (__redirect_memmove) MEMMOVE_Z13 attribute_hidden;
|
|
# endif
|
|
|
|
# if HAVE_MEMMOVE_ARCH13
|
|
extern __typeof (__redirect_memmove) MEMMOVE_ARCH13 attribute_hidden;
|
|
# endif
|
|
|
|
s390_libc_ifunc_expr (__redirect_memmove, memmove,
|
|
({
|
|
s390_libc_ifunc_expr_stfle_init ();
|
|
(HAVE_MEMMOVE_ARCH13 && (hwcap & HWCAP_S390_VXRS_EXT2)
|
|
&& S390_IS_ARCH13_MIE3 (stfle_bits))
|
|
? MEMMOVE_ARCH13
|
|
: (HAVE_MEMMOVE_Z13 && (hwcap & HWCAP_S390_VX))
|
|
? MEMMOVE_Z13
|
|
: MEMMOVE_DEFAULT;
|
|
})
|
|
)
|
|
#endif
|