Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 112 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/s390/s390-64/multiarch/memset-s390x.S b/REORG.TODO/sysdeps/s390/s390-64/multiarch/memset-s390x.S
new file mode 100644
index 0000000000..ca0c4326b1
--- /dev/null
+++ b/REORG.TODO/sysdeps/s390/s390-64/multiarch/memset-s390x.S
@@ -0,0 +1,112 @@
+/* Set a block of memory to some byte value.  64 bit S/390 version.
+   Copyright (C) 2012-2017 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 memory area
+     %r3 = byte to fill memory with
+     %r4 = number of bytes to fill.  */
+
+       .text
+
+#if IS_IN (libc)
+
+ENTRY(__memset_z196)
+	.machine "z196"
+	ltgr    %r4,%r4
+	je      .L_Z196_4
+	stc     %r3,0(%r2)
+	lgr     %r1,%r2
+	cghi    %r4,1
+	je      .L_Z196_4
+	aghi    %r4,-2
+	srlg    %r5,%r4,8
+	ltgr    %r5,%r5
+	jne     .L_Z196_1
+.L_Z196_3:
+	exrl    %r4,.L_Z196_17
+.L_Z196_4:
+	br      %r14
+.L_Z196_1:
+	cgfi	%r5,1048576
+	jh	__memset_mvcle	   # Switch to mvcle for >256MB
+.L_Z196_2:
+	pfd     2,1024(%r1)
+	mvc     1(256,%r1),0(%r1)
+	aghi    %r5,-1
+	la      %r1,256(%r1)
+	jne     .L_Z196_2
+	j       .L_Z196_3
+.L_Z196_17:
+	mvc     1(1,%r1),0(%r1)
+END(__memset_z196)
+
+ENTRY(__memset_z10)
+	.machine "z10"
+	cgije   %r4,0,.L_Z10_4
+	stc     %r3,0(%r2)
+	lgr     %r1,%r2
+	cgije   %r4,1,.L_Z10_4
+	aghi    %r4,-2
+	srlg    %r5,%r4,8
+	cgijlh  %r5,0,.L_Z10_15
+.L_Z10_3:
+	exrl    %r4,.L_Z10_18
+.L_Z10_4:
+	br      %r14
+.L_Z10_15:
+	cgfi	%r5,163840          # Switch to mvcle for >40MB
+	jh	__memset_mvcle
+.L_Z10_14:
+	pfd     2,1024(%r1)
+	mvc     1(256,%r1),0(%r1)
+	la      %r1,256(%r1)
+	brctg   %r5,.L_Z10_14
+	j       .L_Z10_3
+.L_Z10_18:
+	mvc     1(1,%r1),0(%r1)
+END(__memset_z10)
+
+ENTRY(__memset_mvcle)
+	aghi	%r4,2               # take back the change done by the caller
+	lgr	%r0,%r2		    # save source address
+	lgr	%r1,%r3		    # move pad byte to R1
+	lgr	%r3,%r4             # move length to r3
+	sgr	%r4,%r4		    # no source for MVCLE, only a pad byte
+	sgr	%r5,%r5
+.L0:	mvcle	%r2,%r4,0(%r1)	    # thats it, MVCLE is your friend
+	jo	.L0
+	lgr	%r2,%r0		    # return value is source address
+.L1:
+	br	%r14
+END(__memset_mvcle)
+
+#endif /* IS_IN (libc) */
+
+#include "../memset.S"
+
+#if !IS_IN (libc)
+.globl   memset
+.set     memset,__memset_default
+#elif defined SHARED && IS_IN (libc)
+.globl   __GI_memset
+.set     __GI_memset,__memset_default
+#endif