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, 101 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/s390/s390-32/sysdep.h b/REORG.TODO/sysdeps/s390/s390-32/sysdep.h
new file mode 100644
index 0000000000..15a4e3e687
--- /dev/null
+++ b/REORG.TODO/sysdeps/s390/s390-32/sysdep.h
@@ -0,0 +1,101 @@
+/* Assembler macros for s390.
+   Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+   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 <sysdeps/generic/sysdep.h>
+
+#ifdef	__ASSEMBLER__
+
+/* Syntactic details of assembler.  */
+
+/* ELF uses byte-counts for .align, most others use log2 of count of bytes.  */
+#define ALIGNARG(log2) 1<<log2
+#define ASM_SIZE_DIRECTIVE(name) .size name,.-name;
+
+
+/* Define an entry point visible from C. */
+#define	ENTRY(name)							      \
+  .globl C_SYMBOL_NAME(name);						      \
+  .type C_SYMBOL_NAME(name),@function;					      \
+  .align ALIGNARG(2);							      \
+  C_LABEL(name)								      \
+  cfi_startproc;							      \
+  CALL_MCOUNT
+
+#undef	END
+#define END(name)							      \
+  cfi_endproc;								      \
+  ASM_SIZE_DIRECTIVE(name)						      \
+
+/* If compiled for profiling, call `mcount' at the start of each function.  */
+#ifdef	PROF
+#ifdef PIC
+#define CALL_MCOUNT \
+  lr 0,14 ; bras 14,.+12 ; .long _GLOBAL_OFFSET_TABLE_ - . ; .long 0f-. ; \
+  lr 1,14 ; al 1,4(14) ; al 14,0(14) ; l 14,_mcount@GOT(14) ; \
+  basr 14,14 ; lr 14,0 ; .data ; .align 4 ; 0: .long 0 ; .text ;
+#else
+#define CALL_MCOUNT \
+  lr 0,14 ; bras 14,.+12 ; .long _mcount ; .long 0f ; \
+  l 1,4(14) ; l 14,0(14) ; basr 14,14 ; lr 14,0 ; \
+  .data ; .align 4 ; 0: .long 0 ; .text ;
+#endif
+#else
+#define CALL_MCOUNT		/* Do nothing.  */
+#endif
+
+/* Since C identifiers are not normally prefixed with an underscore
+   on this system, the asm identifier `syscall_error' intrudes on the
+   C name space.  Make sure we use an innocuous name.  */
+#define	syscall_error	__syscall_error
+#define mcount		_mcount
+
+#undef PSEUDO
+#define	PSEUDO(name, syscall_name, args) \
+lose: SYSCALL_PIC_SETUP				\
+    basr %r1,0;					\
+0:  al %r1,1f-0b(%r1);				\
+    br %r1;					\
+1:  .long JUMPTARGET(syscall_error) - 0b;	\
+    .globl syscall_error;			\
+    ENTRY (name)				\
+    DO_CALL (syscall_name, args);		\
+    jm lose
+
+#undef	PSEUDO_END
+#define	PSEUDO_END(name)						      \
+  END (name)
+
+#undef JUMPTARGET
+#ifdef PIC
+#define JUMPTARGET(name)	name##@PLT
+#define SYSCALL_PIC_SETUP             \
+    bras  %r12,1f                     \
+0:  .long _GLOBAL_OFFSET_TABLE_-0b    \
+1:  al    %r12,0(%r12)
+#else
+#define JUMPTARGET(name)   	name
+#define SYSCALL_PIC_SETUP	/* Nothing.  */
+#endif
+
+/* Local label name for asm code. */
+#ifndef L
+#define L(name)		.L##name
+#endif
+
+#endif	/* __ASSEMBLER__ */