S390: Refactor strcpy ifunc handling.

The ifunc handling for strcpy is adjusted in order to omit ifunc
variants if those will never be used as the minimum architecture level
already supports newer CPUs by default.
Glibc internal calls will then also use the "newer" ifunc variant.

Note: The fallback s390-32/s390-64 ifunc variants with mvst instruction
are now moved to the unified strcpy-z900.S file which can be used for
31/64bit. The s390-32/s390-64 files multiarch/strcpy.c and strcpy.S
are deleted.

ChangeLog:

	* sysdeps/s390/multiarch/Makefile
	(sysdep_routines): Remove strcpy variants.
	* sysdeps/s390/Makefile (sysdep_routines): Add strcpy variants.
	* sysdeps/s390/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Refactor ifunc handling for strcpy.
	* sysdeps/s390/multiarch/strcpy-vx.S: Move to ...
	* sysdeps/s390/strcpy-vx.S: ... here and adjust ifunc handling.
	* sysdeps/s390/multiarch/strcpy.c: Move to ...
	* sysdeps/s390/strcpy.c: ... here and adjust ifunc handling.
	* sysdeps/s390/ifunc-strcpy.h: New file.
	* sysdeps/s390/s390-64/strcpy.S: Move to ...
	* sysdeps/s390/strcpy-z900.S: ... here and adjust to be usable
	for 31/64bit and ifunc handling.
	* sysdeps/s390/s390-32/multiarch/strcpy.c: Delete file.
	* sysdeps/s390/s390-64/multiarch/strcpy.c: Likewise.
	* sysdeps/s390/s390-32/strcpy.S: Likewise.

1 files changed, 0 insertions, 36 deletions

diff --git a/sysdeps/s390/s390-32/strcpy.S b/sysdeps/s390/s390-32/strcpy.S
deleted file mode 100644
index d49136ee92..0000000000
--- a/sysdeps/s390/s390-32/strcpy.S
+++ /dev/null
@@ -1,36 +0,0 @@
-/* strcpy - copy a string from source to destination. For IBM S390
-   This file is part of the GNU C Library.
-   Copyright (C) 2000-2018 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
-
-   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/>.  */
-
-/*
- * R2 = address of destination
- * R3 = address of source
- */
-
-#include "sysdep.h"
-#include "asm-syntax.h"
-
-	.text
-ENTRY(strcpy)
-	slr   %r0,%r0
-	lr    %r1,%r2
-0:      mvst  %r1,%r3
-	jo    0b
-	br    %r14
-END(strcpy)
-libc_hidden_builtin_def (strcpy)