glibc/sysdeps/s390/multiarch/dl-symbol-redir-ifunc.h
Adhemerval Zanella 1c87f71a36 s390: Use dl-symbol-redir-ifunc.h on cpu-tunables
Using the memcmp symbol directly allows the compile to inline the
memcmp calls (especially because _dl_tunable_set_hwcaps uses constants
values), generating better code.

Checked with tst-tunables on s390x-linux-gnu (qemu system).
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2023-11-21 16:15:42 -03:00

31 lines
1.1 KiB
C

/* Symbol rediretion for loader/static initialization code.
Copyright (C) 2022-2023 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/>. */
#ifndef _DL_IFUNC_GENERIC_H
#define _DL_IFUNC_GENERIC_H
#include <ifunc-memset.h>
#include <ifunc-memcmp.h>
#define IFUNC_SYMBOL_STR1(s) #s
#define IFUNC_SYMBOL_STR(s) IFUNC_SYMBOL_STR1(s)
asm ("memset = " IFUNC_SYMBOL_STR(MEMSET_DEFAULT));
asm ("memcmp = " IFUNC_SYMBOL_STR(MEMCMP_DEFAULT));
#endif