File 0040-S390-Refactor-memcpy-mempcpy-ifunc-handlin... of Package glibc-utils

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File 0040-S390-Refactor-memcpy-mempcpy-ifunc-handling.patch of Package glibc-utils (Revision df83b2354953c755faee259163e152cf)

Currently displaying revision df83b2354953c755faee259163e152cf , Show latest

2018-12-18  Stefan Liebler  <stli@linux.ibm.com>

* sysdeps/s390/ifunc-memcpy.h: New File.
	* sysdeps/s390/memcpy.S: Move to ...
	* sysdeps/s390/memcpy-z900.S ... here.
	Move implementations from memcpy-s390x.s to here.
	* sysdeps/s390/multiarch/memcpy-s390x.S: Delete File.
	* sysdeps/s390/multiarch/Makefile (sysdep_routines):
	Remove memcpy/mempcpy variants.
	* sysdeps/s390/Makefile (sysdep_routines):
	Add memcpy/mempcpy variants.
	* sysdeps/s390/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Adjust ifunc variants for
	memcpy and mempcpy.
	* sysdeps/s390/multiarch/memcpy.c: Move ifunc resolver
	to ...
	* sysdeps/s390/memcpy.c: ... here.
	Adjust ifunc variants for memcpy.
	* sysdeps/s390/multiarch/mempcpy.c: Move to ...
	* sysdeps/s390/mempcpy.c: ... here.
	Adjust ifunc variants for mempcpy.
	* sysdeps/s390/mempcpy.S: Delete file.

Index: glibc-2.22/sysdeps/s390/Makefile
===================================================================
--- glibc-2.22.orig/sysdeps/s390/Makefile
+++ glibc-2.22/sysdeps/s390/Makefile
@@ -29,3 +29,7 @@ $(inst_gconvdir)/%.so: $(objpfx)%.so $(+
 
 sysdeps-gconv-modules = ../sysdeps/s390/gconv-modules
 endif
+
+ifeq ($(subdir),string)
+sysdep_routines += mempcpy memcpy memcpy-z900
+endif
Index: glibc-2.22/sysdeps/s390/ifunc-memcpy.h
===================================================================
--- /dev/null
+++ glibc-2.22/sysdeps/s390/ifunc-memcpy.h
@@ -0,0 +1,68 @@
+/* memcpy variant information on S/390 version.
+   Copyright (C) 2018 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
+   <http://www.gnu.org/licenses/>.  */
+
+#if defined SHARED && defined USE_MULTIARCH && IS_IN (libc)	\
+  && ! defined HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT
+# define HAVE_MEMCPY_IFUNC	1
+#else
+# define HAVE_MEMCPY_IFUNC	0
+#endif
+
+#if defined HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT
+# define MEMCPY_DEFAULT		MEMCPY_Z196
+# define MEMPCPY_DEFAULT	MEMPCPY_Z196
+# define HAVE_MEMCPY_Z900_G5	0
+# define HAVE_MEMCPY_Z10	0
+# define HAVE_MEMCPY_Z196	1
+#elif defined HAVE_S390_MIN_Z10_ZARCH_ASM_SUPPORT
+# define MEMCPY_DEFAULT		MEMCPY_Z10
+# define MEMPCPY_DEFAULT	MEMPCPY_Z10
+# define HAVE_MEMCPY_Z900_G5	0
+# define HAVE_MEMCPY_Z10	1
+# define HAVE_MEMCPY_Z196	HAVE_MEMCPY_IFUNC
+#else
+# define MEMCPY_DEFAULT		MEMCPY_Z900_G5
+# define MEMPCPY_DEFAULT	MEMPCPY_Z900_G5
+# define HAVE_MEMCPY_Z900_G5	1
+# define HAVE_MEMCPY_Z10	HAVE_MEMCPY_IFUNC
+# define HAVE_MEMCPY_Z196	HAVE_MEMCPY_IFUNC
+#endif
+
+#if HAVE_MEMCPY_Z900_G5
+# define MEMCPY_Z900_G5		__memcpy_default
+# define MEMPCPY_Z900_G5	__mempcpy_default
+#else
+# define MEMCPY_Z900_G5		NULL
+# define MEMPCPY_Z900_G5	NULL
+#endif
+
+#if HAVE_MEMCPY_Z10
+# define MEMCPY_Z10		__memcpy_z10
+# define MEMPCPY_Z10		__mempcpy_z10
+#else
+# define MEMCPY_Z10		NULL
+# define MEMPCPY_Z10		NULL
+#endif
+
+#if HAVE_MEMCPY_Z196
+# define MEMCPY_Z196		__memcpy_z196
+# define MEMPCPY_Z196		__mempcpy_z196
+#else
+# define MEMCPY_Z196		NULL
+# define MEMPCPY_Z196		NULL
+#endif
Index: glibc-2.22/sysdeps/s390/memcpy-z900.S
===================================================================
--- /dev/null
+++ glibc-2.22/sysdeps/s390/memcpy-z900.S
@@ -0,0 +1,224 @@
+/* memcpy - copy a block from source to destination.  31/64 bit S/390 version.
+   Copyright (C) 2012-2018 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
+   <http://www.gnu.org/licenses/>.  */
+
+
+#include <sysdep.h>
+#include "asm-syntax.h"
+#include <ifunc-memcpy.h>
+
+/* INPUT PARAMETERS
+     %r2 = address of destination memory area
+     %r3 = address of source memory area
+     %r4 = number of bytes to copy.  */
+
+       .text
+
+#if defined __s390x__
+# define LTGR	ltgr
+# define CGHI	cghi
+# define LGR	lgr
+# define AGHI	aghi
+# define BRCTG	brctg
+#else
+# define LTGR	ltr
+# define CGHI	chi
+# define LGR	lr
+# define AGHI	ahi
+# define BRCTG	brct
+#endif /* ! defined __s390x__  */
+
+#if HAVE_MEMCPY_Z900_G5
+ENTRY(MEMPCPY_Z900_G5)
+# if defined __s390x__
+	.machine "z900"
+# else
+	.machine "g5"
+# endif /* ! defined __s390x__  */
+	LGR     %r1,%r2             # Use as dest
+	la      %r2,0(%r4,%r2)      # Return dest + n
+	j	.L_Z900_G5_start
+END(MEMPCPY_Z900_G5)
+
+ENTRY(MEMCPY_Z900_G5)
+# if defined __s390x__
+	.machine "z900"
+# else
+	.machine "g5"
+# endif /* ! defined __s390x__  */
+	LGR     %r1,%r2             # r1: Use as dest ; r2: Return dest
+.L_Z900_G5_start:
+	LTGR    %r4,%r4
+	je      .L_Z900_G5_4
+	AGHI    %r4,-1
+# if defined __s390x__
+	srlg	%r5,%r4,8
+# else
+	lr	%r5,%r4
+	srl	%r5,8
+# endif /* ! defined __s390x__  */
+	LTGR    %r5,%r5
+	jne     .L_Z900_G5_13
+.L_Z900_G5_3:
+# if defined __s390x__
+	larl    %r5,.L_Z900_G5_15
+#  define Z900_G5_EX_D 0
+# else
+	basr    %r5,0
+.L_Z900_G5_14:
+#  define Z900_G5_EX_D .L_Z900_G5_15-.L_Z900_G5_14
+# endif /* ! defined __s390x__  */
+	ex      %r4,Z900_G5_EX_D(%r5)
+.L_Z900_G5_4:
+	br      %r14
+.L_Z900_G5_13:
+	CGHI	%r5,4096            # Switch to mvcle for copies >1MB
+	jh      __memcpy_mvcle
+.L_Z900_G5_12:
+	mvc     0(256,%r1),0(%r3)
+	la      %r1,256(%r1)
+	la      %r3,256(%r3)
+	BRCTG   %r5,.L_Z900_G5_12
+	j       .L_Z900_G5_3
+.L_Z900_G5_15:
+	mvc     0(1,%r1),0(%r3)
+END(MEMCPY_Z900_G5)
+#endif /* HAVE_MEMCPY_Z900_G5  */
+
+ENTRY(__memcpy_mvcle)
+	# Using as standalone function will result in unexpected
+	# results since the length field is incremented by 1 in order to
+	# compensate the changes already done in the functions above.
+	LGR     %r0,%r2             # backup return dest [ + n ]
+	AGHI    %r4,1               # length + 1
+	LGR     %r5,%r4             # source length
+	LGR     %r4,%r3             # source address
+	LGR     %r2,%r1             # destination address
+	LGR     %r3,%r5             # destination length = source length
+.L_MVCLE_1:
+	mvcle   %r2,%r4,0           # thats it, MVCLE is your friend
+	jo      .L_MVCLE_1
+	LGR     %r2,%r0             # return destination address
+	br      %r14
+END(__memcpy_mvcle)
+
+#undef LTGR
+#undef CGHI
+#undef LGR
+#undef AGHI
+#undef BRCTG
+
+#if HAVE_MEMCPY_Z10
+ENTRY(MEMPCPY_Z10)
+	.machine "z10"
+	.machinemode "zarch_nohighgprs"
+	lgr     %r1,%r2         # Use as dest
+	la      %r2,0(%r4,%r2)  # Return dest + n
+	j	.L_Z10_start
+END(MEMPCPY_Z10)
+
+ENTRY(MEMCPY_Z10)
+	.machine "z10"
+	.machinemode "zarch_nohighgprs"
+	lgr     %r1,%r2         # r1: Use as dest ; r2: Return dest
+.L_Z10_start:
+# if !defined __s390x__
+	llgfr	%r4,%r4
+# endif /* !defined __s390x__  */
+	cgije   %r4,0,.L_Z10_4
+	aghi    %r4,-1
+	srlg    %r5,%r4,8
+	cgijlh  %r5,0,.L_Z10_13
+.L_Z10_3:
+	exrl    %r4,.L_Z10_15
+.L_Z10_4:
+	br      %r14
+.L_Z10_13:
+	cgfi    %r5,65535	# Switch to mvcle for copies >16MB
+	jh      __memcpy_mvcle
+.L_Z10_12:
+	pfd     1,768(%r3)
+	pfd     2,768(%r1)
+	mvc     0(256,%r1),0(%r3)
+	la      %r1,256(%r1)
+	la      %r3,256(%r3)
+	brctg   %r5,.L_Z10_12
+	j       .L_Z10_3
+.L_Z10_15:
+	mvc     0(1,%r1),0(%r3)
+END(MEMCPY_Z10)
+#endif /* HAVE_MEMCPY_Z10  */
+
+#if HAVE_MEMCPY_Z196
+ENTRY(MEMPCPY_Z196)
+	.machine "z196"
+	.machinemode "zarch_nohighgprs"
+	lgr     %r1,%r2         # Use as dest
+	la      %r2,0(%r4,%r2)  # Return dest + n
+	j	.L_Z196_start
+END(MEMPCPY_Z196)
+
+ENTRY(MEMCPY_Z196)
+	.machine "z196"
+	.machinemode "zarch_nohighgprs"
+	lgr     %r1,%r2         # r1: Use as dest ; r2: Return dest
+.L_Z196_start:
+# if !defined __s390x__
+	llgfr	%r4,%r4
+# endif /* !defined __s390x__  */
+	ltgr    %r4,%r4
+	je      .L_Z196_4
+	aghi    %r4,-1
+	srlg    %r5,%r4,8
+	ltgr    %r5,%r5
+	jne     .L_Z196_5
+.L_Z196_3:
+	exrl    %r4,.L_Z196_14
+.L_Z196_4:
+	br      %r14
+.L_Z196_5:
+	cgfi    %r5,262144      # Switch to mvcle for copies >64MB
+	jh      __memcpy_mvcle
+.L_Z196_2:
+	pfd     1,768(%r3)
+	pfd     2,768(%r1)
+	mvc     0(256,%r1),0(%r3)
+	aghi    %r5,-1
+	la      %r1,256(%r1)
+	la      %r3,256(%r3)
+	jne     .L_Z196_2
+	j       .L_Z196_3
+.L_Z196_14:
+	mvc     0(1,%r1),0(%r3)
+END(MEMCPY_Z196)
+#endif /* HAVE_MEMCPY_Z196  */
+
+#if ! HAVE_MEMCPY_IFUNC
+/* If we don't use ifunc, define an alias for mem[p]cpy here.
+   Otherwise see sysdeps/s390/mem[p]cpy.c.  */
+strong_alias (MEMCPY_DEFAULT, memcpy)
+strong_alias (MEMPCPY_DEFAULT, __mempcpy)
+weak_alias (__mempcpy, mempcpy)
+#endif
+
+#if defined SHARED && IS_IN (libc)
+/* Defines the internal symbols.
+   Compare to libc_hidden_[builtin_]def (mem[p]cpy) in string/mem[p]cpy.c.  */
+strong_alias (MEMCPY_DEFAULT, __GI_memcpy)
+strong_alias (MEMPCPY_DEFAULT, __GI_mempcpy)
+strong_alias (MEMPCPY_DEFAULT, __GI___mempcpy)
+#endif
Index: glibc-2.22/sysdeps/s390/memcpy.S
===================================================================
--- glibc-2.22.orig/sysdeps/s390/memcpy.S
+++ /dev/null
@@ -1,128 +0,0 @@
-/* memcpy - copy a block from source to destination.  31/64 bit S/390 version.
-   Copyright (C) 2012-2018 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
-   <http://www.gnu.org/licenses/>.  */
-
-
-#include <sysdep.h>
-#include "asm-syntax.h"
-
-/* INPUT PARAMETERS
-     %r2 = address of destination memory area
-     %r3 = address of source memory area
-     %r4 = number of bytes to copy.  */
-
-       .text
-
-#if defined __s390x__
-# define LTGR	ltgr
-# define CGHI	cghi
-# define LGR	lgr
-# define AGHI	aghi
-# define BRCTG	brctg
-#else
-# define LTGR	ltr
-# define CGHI	chi
-# define LGR	lr
-# define AGHI	ahi
-# define BRCTG	brct
-#endif /* ! defined __s390x__  */
-
-ENTRY(__mempcpy)
-#if defined __s390x__
-	.machine "z900"
-#else
-	.machine "g5"
-#endif /* ! defined __s390x__  */
-	LGR     %r1,%r2             # Use as dest
-	la      %r2,0(%r4,%r2)      # Return dest + n
-	j	.L_Z900_G5_start
-END(__mempcpy)
-#ifndef USE_MULTIARCH
-libc_hidden_def (__mempcpy)
-weak_alias (__mempcpy, mempcpy)
-libc_hidden_builtin_def (mempcpy)
-#endif
-
-ENTRY(memcpy)
-#if defined __s390x__
-	.machine "z900"
-#else
-	.machine "g5"
-#endif /* ! defined __s390x__  */
-	LGR     %r1,%r2             # r1: Use as dest ; r2: Return dest
-.L_Z900_G5_start:
-	LTGR    %r4,%r4
-	je      .L_Z900_G5_4
-	AGHI    %r4,-1
-#if defined __s390x__
-	srlg	%r5,%r4,8
-#else
-	lr	%r5,%r4
-	srl	%r5,8
-#endif /* ! defined __s390x__  */
-	LTGR    %r5,%r5
-	jne     .L_Z900_G5_13
-.L_Z900_G5_3:
-#if defined __s390x__
-	larl    %r5,.L_Z900_G5_15
-# define Z900_G5_EX_D 0
-#else
-	basr    %r5,0
-.L_Z900_G5_14:
-# define Z900_G5_EX_D .L_Z900_G5_15-.L_Z900_G5_14
-#endif /* ! defined __s390x__  */
-	ex      %r4,Z900_G5_EX_D(%r5)
-.L_Z900_G5_4:
-	br      %r14
-.L_Z900_G5_13:
-	CGHI	%r5,4096            # Switch to mvcle for copies >1MB
-	jh      __memcpy_mvcle
-.L_Z900_G5_12:
-	mvc     0(256,%r1),0(%r3)
-	la      %r1,256(%r1)
-	la      %r3,256(%r3)
-	BRCTG   %r5,.L_Z900_G5_12
-	j       .L_Z900_G5_3
-.L_Z900_G5_15:
-	mvc     0(1,%r1),0(%r3)
-END(memcpy)
-#ifndef USE_MULTIARCH
-libc_hidden_builtin_def (memcpy)
-#endif
-
-ENTRY(__memcpy_mvcle)
-	# Using as standalone function will result in unexpected
-	# results since the length field is incremented by 1 in order to
-	# compensate the changes already done in the functions above.
-	LGR     %r0,%r2             # backup return dest [ + n ]
-	AGHI    %r4,1               # length + 1
-	LGR     %r5,%r4             # source length
-	LGR     %r4,%r3             # source address
-	LGR     %r2,%r1             # destination address
-	LGR     %r3,%r5             # destination length = source length
-.L_MVCLE_1:
-	mvcle   %r2,%r4,0           # thats it, MVCLE is your friend
-	jo      .L_MVCLE_1
-	LGR     %r2,%r0             # return destination address
-	br      %r14
-END(__memcpy_mvcle)
-
-#undef LTGR
-#undef CGHI
-#undef LGR
-#undef AGHI
-#undef BRCTG
Index: glibc-2.22/sysdeps/s390/memcpy.c
===================================================================
--- /dev/null
+++ glibc-2.22/sysdeps/s390/memcpy.c
@@ -0,0 +1,49 @@
+/* Multiple versions of memcpy.
+   Copyright (C) 2015 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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <ifunc-memcpy.h>
+
+#if HAVE_MEMCPY_IFUNC
+# define memcpy __redirect_memcpy
+# include <string.h>
+# undef memcpy
+# include <ifunc-resolve.h>
+
+# if HAVE_MEMCPY_Z900_G5
+extern __typeof (__redirect_memcpy) MEMCPY_Z900_G5 attribute_hidden;
+# endif
+
+# if HAVE_MEMCPY_Z10
+extern __typeof (__redirect_memcpy) MEMCPY_Z10 attribute_hidden;
+# endif
+
+# if HAVE_MEMCPY_Z196
+extern __typeof (__redirect_memcpy) MEMCPY_Z196 attribute_hidden;
+# endif
+
+s390_libc_ifunc_expr (__redirect_memcpy, memcpy,
+		      ({
+			s390_libc_ifunc_init ();
+			(HAVE_MEMCPY_Z196 && S390_IS_Z196 (stfle_bits))
+			  ? MEMCPY_Z196
+			  : (HAVE_MEMCPY_Z10 && S390_IS_Z10 (stfle_bits))
+			  ? MEMCPY_Z10
+			  : MEMCPY_DEFAULT;
+		      })
+		      )
+#endif
Index: glibc-2.22/sysdeps/s390/mempcpy.S
===================================================================
--- glibc-2.22.orig/sysdeps/s390/mempcpy.S
+++ /dev/null
@@ -1,19 +0,0 @@
-/* CPU specific mempcpy without multiarch - 32/64 bit S/390 version.
-   Copyright (C) 2016 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
-   <http://www.gnu.org/licenses/>.  */
-
-/* mempcpy is implemented in memcpy.S.  */
Index: glibc-2.22/sysdeps/s390/mempcpy.c
===================================================================
--- /dev/null
+++ glibc-2.22/sysdeps/s390/mempcpy.c
@@ -0,0 +1,54 @@
+/* Multiple versions of mempcpy.
+   Copyright (C) 2016 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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <ifunc-memcpy.h>
+
+#if HAVE_MEMCPY_IFUNC
+# define mempcpy __redirect_mempcpy
+# define __mempcpy __redirect___mempcpy
+/* Omit the mempcpy inline definitions because it would redefine mempcpy.  */
+# define _HAVE_STRING_ARCH_mempcpy 1
+# include <string.h>
+# undef mempcpy
+# undef __mempcpy
+# include <ifunc-resolve.h>
+
+# if HAVE_MEMCPY_Z900_G5
+extern __typeof (__redirect___mempcpy) MEMPCPY_Z900_G5 attribute_hidden;
+# endif
+
+# if HAVE_MEMCPY_Z10
+extern __typeof (__redirect___mempcpy) MEMPCPY_Z10 attribute_hidden;
+# endif
+
+# if HAVE_MEMCPY_Z196
+extern __typeof (__redirect___mempcpy) MEMPCPY_Z196 attribute_hidden;
+# endif
+
+s390_libc_ifunc_expr (__redirect___mempcpy, __mempcpy,
+		      ({
+			s390_libc_ifunc_init ();
+			(HAVE_MEMCPY_Z196 && S390_IS_Z196 (stfle_bits))
+			  ? MEMPCPY_Z196
+			  : (HAVE_MEMCPY_Z10 && S390_IS_Z10 (stfle_bits))
+			  ? MEMPCPY_Z10
+			  : MEMPCPY_DEFAULT;
+		      })
+		      )
+weak_alias (__mempcpy, mempcpy);
+#endif
Index: glibc-2.22/sysdeps/s390/multiarch/Makefile
===================================================================
--- glibc-2.22.orig/sysdeps/s390/multiarch/Makefile
+++ glibc-2.22/sysdeps/s390/multiarch/Makefile
@@ -18,8 +18,7 @@ sysdep_routines += strlen strlen-vx strl
 		   memchr memchr-vx \
 		   rawmemchr rawmemchr-vx rawmemchr-c \
 		   memccpy memccpy-vx memccpy-c \
-		   memrchr memrchr-vx memrchr-c \
-		   mempcpy memcpy memcpy-s390x
+		   memrchr memrchr-vx memrchr-c
 endif
 
 ifeq ($(subdir),wcsmbs)
Index: glibc-2.22/sysdeps/s390/multiarch/ifunc-impl-list.c
===================================================================
--- glibc-2.22.orig/sysdeps/s390/multiarch/ifunc-impl-list.c
+++ glibc-2.22/sysdeps/s390/multiarch/ifunc-impl-list.c
@@ -21,6 +21,7 @@
 #include <wchar.h>
 #include <ifunc-impl-list.h>
 #include <ifunc-resolve.h>
+#include <ifunc-memcpy.h>
 
 /* Maximum number of IFUNC implementations.  */
 #define MAX_IFUNC	3
@@ -60,23 +61,35 @@ __libc_ifunc_impl_list (const char *name
 			      S390_IS_Z10 (stfle_bits), __memcmp_z10)
 	      IFUNC_IMPL_ADD (array, i, memcmp, 1, __memcmp_default))
 
-#ifdef SHARED
-
+#if HAVE_MEMCPY_IFUNC
   IFUNC_IMPL (i, name, memcpy,
+# if HAVE_MEMCPY_Z196
 	      IFUNC_IMPL_ADD (array, i, memcpy,
-			      S390_IS_Z196 (stfle_bits), __memcpy_z196)
+			      S390_IS_Z196 (stfle_bits), MEMCPY_Z196)
+# endif
+# if HAVE_MEMCPY_Z10
 	      IFUNC_IMPL_ADD (array, i, memcpy,
-			      S390_IS_Z10 (stfle_bits), __memcpy_z10)
-	      IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_default))
+			      S390_IS_Z10 (stfle_bits), MEMCPY_Z10)
+# endif
+# if HAVE_MEMCPY_Z900_G5
+	      IFUNC_IMPL_ADD (array, i, memcpy, 1, MEMCPY_Z900_G5)
+# endif
+	      )
 
   IFUNC_IMPL (i, name, mempcpy,
+# if HAVE_MEMCPY_Z196
 	      IFUNC_IMPL_ADD (array, i, mempcpy,
-			      S390_IS_Z196 (stfle_bits), ____mempcpy_z196)
+			      S390_IS_Z196 (stfle_bits), MEMPCPY_Z196)
+# endif
+# if HAVE_MEMCPY_Z10
 	      IFUNC_IMPL_ADD (array, i, mempcpy,
-			      S390_IS_Z10 (stfle_bits), ____mempcpy_z10)
-	      IFUNC_IMPL_ADD (array, i, mempcpy, 1, ____mempcpy_default))
-
-#endif /* SHARED */
+			      S390_IS_Z10 (stfle_bits), MEMPCPY_Z10)
+# endif
+# if HAVE_MEMCPY_Z900_G5
+	      IFUNC_IMPL_ADD (array, i, mempcpy, 1, MEMPCPY_Z900_G5)
+# endif
+	      )
+#endif /* HAVE_MEMCPY_IFUNC  */
 
 #ifdef HAVE_S390_VX_ASM_SUPPORT
 
Index: glibc-2.22/sysdeps/s390/multiarch/memcpy-s390x.S
===================================================================
--- glibc-2.22.orig/sysdeps/s390/multiarch/memcpy-s390x.S
+++ /dev/null
@@ -1,132 +0,0 @@
-/* CPU specific memcpy implementations.  31/64 bit S/390 version.
-   Copyright (C) 2012-2018 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
-   <http://www.gnu.org/licenses/>.  */
-
-
-#include "sysdep.h"
-#include "asm-syntax.h"
-
-/* INPUT PARAMETERS
-     %r2 = target operands address
-     %r3 = source operands address
-     %r4 = number of bytes to copy.  */
-
-       .text
-
-#if defined SHARED && IS_IN (libc)
-
-ENTRY(____mempcpy_z196)
-	.machine "z196"
-	.machinemode "zarch_nohighgprs"
-	lgr     %r1,%r2         # Use as dest
-	la      %r2,0(%r4,%r2)  # Return dest + n
-	j	.L_Z196_start
-END(____mempcpy_z196)
-
-ENTRY(__memcpy_z196)
-	.machine "z196"
-	.machinemode "zarch_nohighgprs"
-	lgr     %r1,%r2         # r1: Use as dest ; r2: Return dest
-.L_Z196_start:
-# if !defined __s390x__
-	llgfr	%r4,%r4
-# endif /* !defined __s390x__  */
-	ltgr    %r4,%r4
-	je      .L_Z196_4
-	aghi    %r4,-1
-	srlg    %r5,%r4,8
-	ltgr    %r5,%r5
-	jne     .L_Z196_5
-.L_Z196_3:
-	exrl    %r4,.L_Z196_14
-.L_Z196_4:
-	br      %r14
-.L_Z196_5:
-	cgfi    %r5,262144      # Switch to mvcle for copies >64MB
-	jh      __memcpy_mvcle
-.L_Z196_2:
-	pfd     1,768(%r3)
-	pfd     2,768(%r1)
-	mvc     0(256,%r1),0(%r3)
-	aghi    %r5,-1
-	la      %r1,256(%r1)
-	la      %r3,256(%r3)
-	jne     .L_Z196_2
-	j       .L_Z196_3
-.L_Z196_14:
-	mvc     0(1,%r1),0(%r3)
-END(__memcpy_z196)
-
-ENTRY(____mempcpy_z10)
-	.machine "z10"
-	.machinemode "zarch_nohighgprs"
-	lgr     %r1,%r2         # Use as dest
-	la      %r2,0(%r4,%r2)  # Return dest + n
-	j	.L_Z10_start
-END(____mempcpy_z10)
-
-ENTRY(__memcpy_z10)
-	.machine "z10"
-	.machinemode "zarch_nohighgprs"
-	lgr     %r1,%r2         # r1: Use as dest ; r2: Return dest
-.L_Z10_start:
-# if !defined __s390x__
-	llgfr	%r4,%r4
-# endif /* !defined __s390x__  */
-	cgije   %r4,0,.L_Z10_4
-	aghi    %r4,-1
-	srlg    %r5,%r4,8
-	cgijlh  %r5,0,.L_Z10_13
-.L_Z10_3:
-	exrl    %r4,.L_Z10_15
-.L_Z10_4:
-	br      %r14
-.L_Z10_13:
-	cgfi    %r5,65535	# Switch to mvcle for copies >16MB
-	jh      __memcpy_mvcle
-.L_Z10_12:
-	pfd     1,768(%r3)
-	pfd     2,768(%r1)
-	mvc     0(256,%r1),0(%r3)
-	la      %r1,256(%r1)
-	la      %r3,256(%r3)
-	brctg   %r5,.L_Z10_12
-	j       .L_Z10_3
-.L_Z10_15:
-	mvc     0(1,%r1),0(%r3)
-END(__memcpy_z10)
-
-# define __mempcpy ____mempcpy_default
-#endif /* SHARED && IS_IN (libc) */
-
-#define memcpy __memcpy_default
-#include "../memcpy.S"
-#undef memcpy
-
-#if defined SHARED && IS_IN (libc)
-.globl   __GI_memcpy
-.set     __GI_memcpy,__memcpy_default
-.globl   __GI_mempcpy
-.set     __GI_mempcpy,____mempcpy_default
-.globl   __GI___mempcpy
-.set     __GI___mempcpy,____mempcpy_default
-#else
-.globl   memcpy
-.set     memcpy,__memcpy_default
-.weak    mempcpy
-.set     mempcpy,__mempcpy
-#endif
Index: glibc-2.22/sysdeps/s390/multiarch/memcpy.c
===================================================================
--- glibc-2.22.orig/sysdeps/s390/multiarch/memcpy.c
+++ /dev/null
@@ -1,27 +0,0 @@
-/* Multiple versions of memcpy.
-   Copyright (C) 2015 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
-   <http://www.gnu.org/licenses/>.  */
-
-/* In the static lib memcpy is needed before the reloc is resolved.  */
-#if defined SHARED && IS_IN (libc)
-# define memcpy __redirect_memcpy
-# include <string.h>
-# undef memcpy
-# include <ifunc-resolve.h>
-
-s390_libc_ifunc (__redirect_memcpy, __memcpy, memcpy)
-#endif
Index: glibc-2.22/sysdeps/s390/multiarch/mempcpy.c
===================================================================
--- glibc-2.22.orig/sysdeps/s390/multiarch/mempcpy.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/* Multiple versions of mempcpy.
-   Copyright (C) 2016 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
-   <http://www.gnu.org/licenses/>.  */
-
-
-#if defined SHARED && IS_IN (libc)
-# define mempcpy __redirect_mempcpy
-# define __mempcpy __redirect___mempcpy
-/* Omit the mempcpy inline definitions because it would redefine mempcpy.  */
-# define _HAVE_STRING_ARCH_mempcpy 1
-# include <string.h>
-# undef mempcpy
-# undef __mempcpy
-# include <ifunc-resolve.h>
-
-s390_libc_ifunc (__redirect___mempcpy, ____mempcpy, __mempcpy)
-weak_alias (__mempcpy, mempcpy);
-#endif

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File 0040-S390-Refactor-memcpy-mempcpy-ifunc-handling.patch of Package glibc-utils (Revision df83b2354953c755faee259163e152cf)

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