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, 360 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/sh/sysdep.h b/REORG.TODO/sysdeps/unix/sysv/linux/sh/sysdep.h
new file mode 100644
index 0000000000..b76140cd90
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/sh/sysdep.h
@@ -0,0 +1,360 @@
+/* Copyright (C) 1992-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995.
+   Changed by Kaz Kojima, <kkojima@rr.iij4u.or.jp>.
+
+   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/>.  */
+
+#ifndef _LINUX_SH_SYSDEP_H
+#define _LINUX_SH_SYSDEP_H 1
+
+/* There is some commonality.  */
+#include <sysdeps/unix/sysv/linux/sysdep.h>
+#include <sysdeps/unix/sh/sysdep.h>
+#include <tls.h>
+
+/* For Linux we can use the system call table in the header file
+	/usr/include/asm/unistd.h
+   of the kernel.  But these symbols do not follow the SYS_* syntax
+   so we have to redefine the `SYS_ify' macro here.  */
+#undef SYS_ify
+#define SYS_ify(syscall_name)	(__NR_##syscall_name)
+
+
+#ifdef __ASSEMBLER__
+
+/* Linux uses a negative return value to indicate syscall errors,
+   unlike most Unices, which use the condition codes' carry flag.
+
+   Since version 2.1 the return value of a system call might be
+   negative even if the call succeeded.  E.g., the `lseek' system call
+   might return a large offset.  Therefore we must not anymore test
+   for < 0, but test for a real error by making sure the value in R0
+   is a real error number.  Linus said he will make sure the no syscall
+   returns a value in -1 .. -4095 as a valid result so we can savely
+   test with -4095.  */
+
+#define _IMM1 #-1
+#define _IMM12 #-12
+#undef	PSEUDO
+#define	PSEUDO(name, syscall_name, args) \
+ .text; \
+ ENTRY (name); \
+    DO_CALL (syscall_name, args); \
+    mov r0,r1; \
+    mov _IMM12,r2; \
+    shad r2,r1; \
+    not r1,r1; \
+    tst r1,r1; \
+    bf .Lpseudo_end; \
+    SYSCALL_ERROR_HANDLER; \
+ .Lpseudo_end:
+
+#undef	PSEUDO_END
+#define	PSEUDO_END(name) \
+  END (name)
+
+#undef	PSEUDO_NOERRNO
+#define	PSEUDO_NOERRNO(name, syscall_name, args) \
+ .text; \
+ ENTRY (name); \
+    DO_CALL (syscall_name, args)
+
+#undef	PSEUDO_END_NOERRNO
+#define	PSEUDO_END_NOERRNO(name) \
+  END (name)
+
+#define ret_NOERRNO ret
+
+#define	PSEUDO_ERRVAL(name, syscall_name, args) \
+ .text; \
+ ENTRY (name); \
+    DO_CALL (syscall_name, args);
+
+#undef	PSEUDO_END_ERRVAL
+#define	PSEUDO_END_ERRVAL(name) \
+  END (name)
+
+#define ret_ERRVAL ret
+
+#ifndef PIC
+# define SYSCALL_ERROR_HANDLER	\
+	mov.l 0f,r1; \
+	jmp @r1; \
+	 mov r0,r4; \
+	.align 2; \
+     0: .long __syscall_error
+#else
+# if RTLD_PRIVATE_ERRNO
+#  define SYSCALL_ERROR_HANDLER	\
+	neg r0,r1; \
+	mov r12,r2; \
+	cfi_register (r12, r2); \
+	mov.l 0f,r12; \
+	mova 0f,r0; \
+	add r0,r12; \
+	mov.l 1f,r0; \
+	mov.l r1,@(r0,r12); \
+	mov r2,r12; \
+	cfi_restore (r12); \
+	bra .Lpseudo_end; \
+	 mov _IMM1,r0; \
+	.align 2; \
+     0: .long _GLOBAL_OFFSET_TABLE_; \
+     1: .long rtld_errno@GOTOFF
+
+# elif defined _LIBC_REENTRANT
+
+#  if IS_IN (libc)
+#   define SYSCALL_ERROR_ERRNO __libc_errno
+#  else
+#   define SYSCALL_ERROR_ERRNO errno
+#  endif
+#  define SYSCALL_ERROR_HANDLER \
+	neg r0,r1; \
+	mov r12,r2; \
+	cfi_register (r12, r2); \
+	mov.l 0f,r12; \
+	mova 0f,r0; \
+	add r0,r12; \
+	mov.l 1f,r0; \
+	stc gbr, r4; \
+	mov.l @(r0,r12),r0; \
+	mov r2,r12; \
+	cfi_restore (r12); \
+	add r4,r0; \
+	mov.l r1,@r0; \
+	bra .Lpseudo_end; \
+	 mov _IMM1,r0; \
+	.align 2; \
+     0: .long _GLOBAL_OFFSET_TABLE_; \
+     1: .long SYSCALL_ERROR_ERRNO@GOTTPOFF
+# else
+/* Store (-r0) into errno through the GOT.  */
+#  define SYSCALL_ERROR_HANDLER						      \
+	neg r0,r1; \
+	mov r12,r2; \
+	cfi_register (r12, r2); \
+	mov.l 0f,r12; \
+	mova 0f,r0; \
+	add r0,r12; \
+	mov.l 1f,r0; \
+	mov.l @(r0,r12),r0; \
+	mov r2,r12; \
+	cfi_restore (r12); \
+	mov.l r1,@r0; \
+	bra .Lpseudo_end; \
+	 mov _IMM1,r0; \
+	.align 2; \
+     0: .long _GLOBAL_OFFSET_TABLE_; \
+     1: .long errno@GOT
+# endif	/* _LIBC_REENTRANT */
+#endif	/* PIC */
+
+# ifdef NEED_SYSCALL_INST_PAD
+#  define SYSCALL_INST_PAD \
+	or r0,r0; or r0,r0; or r0,r0; or r0,r0; or r0,r0
+# else
+#  define SYSCALL_INST_PAD
+# endif
+
+#define SYSCALL_INST0	trapa #0x10
+#define SYSCALL_INST1	trapa #0x11
+#define SYSCALL_INST2	trapa #0x12
+#define SYSCALL_INST3	trapa #0x13
+#define SYSCALL_INST4	trapa #0x14
+#define SYSCALL_INST5	mov.l @(0,r15),r0; trapa #0x15
+#define SYSCALL_INST6	mov.l @(0,r15),r0; mov.l @(4,r15),r1; trapa #0x16
+
+#undef	DO_CALL
+#define DO_CALL(syscall_name, args)	\
+    mov.l 1f,r3;			\
+    SYSCALL_INST##args;			\
+    SYSCALL_INST_PAD;			\
+    bra 2f;				\
+     nop;				\
+    .align 2;				\
+ 1: .long SYS_ify (syscall_name);	\
+ 2:
+
+#else /* not __ASSEMBLER__ */
+
+#define SYSCALL_INST_STR0	"trapa #0x10\n\t"
+#define SYSCALL_INST_STR1	"trapa #0x11\n\t"
+#define SYSCALL_INST_STR2	"trapa #0x12\n\t"
+#define SYSCALL_INST_STR3	"trapa #0x13\n\t"
+#define SYSCALL_INST_STR4	"trapa #0x14\n\t"
+#define SYSCALL_INST_STR5	"trapa #0x15\n\t"
+#define SYSCALL_INST_STR6	"trapa #0x16\n\t"
+
+# ifdef NEED_SYSCALL_INST_PAD
+#  define SYSCALL_INST_PAD "\
+	or r0,r0; or r0,r0; or r0,r0; or r0,r0; or r0,r0"
+# else
+#  define SYSCALL_INST_PAD
+# endif
+
+#define ASMFMT_0
+#define ASMFMT_1 \
+	, "r" (r4)
+#define ASMFMT_2 \
+	, "r" (r4), "r" (r5)
+#define ASMFMT_3 \
+	, "r" (r4), "r" (r5), "r" (r6)
+#define ASMFMT_4 \
+	, "r" (r4), "r" (r5), "r" (r6), "r" (r7)
+#define ASMFMT_5 \
+	, "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0)
+#define ASMFMT_6 \
+	, "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0), "r" (r1)
+#define ASMFMT_7 \
+	, "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0), "r" (r1), "r" (r2)
+
+#define SUBSTITUTE_ARGS_0()
+#define SUBSTITUTE_ARGS_1(arg1) \
+	long int _arg1 = (long int) (arg1);				      \
+	register long int r4 asm ("%r4") = (long int) (_arg1)
+#define SUBSTITUTE_ARGS_2(arg1, arg2) \
+	long int _arg1 = (long int) (arg1);				      \
+	long int _arg2 = (long int) (arg2);				      \
+	register long int r4 asm ("%r4") = (long int) (_arg1);		      \
+	register long int r5 asm ("%r5") = (long int) (_arg2)
+#define SUBSTITUTE_ARGS_3(arg1, arg2, arg3) \
+	long int _arg1 = (long int) (arg1);				      \
+	long int _arg2 = (long int) (arg2);				      \
+	long int _arg3 = (long int) (arg3);				      \
+	register long int r4 asm ("%r4") = (long int) (_arg1);		      \
+	register long int r5 asm ("%r5") = (long int) (_arg2);		      \
+	register long int r6 asm ("%r6") = (long int) (_arg3)
+#define SUBSTITUTE_ARGS_4(arg1, arg2, arg3, arg4) \
+	long int _arg1 = (long int) (arg1);				      \
+	long int _arg2 = (long int) (arg2);				      \
+	long int _arg3 = (long int) (arg3);				      \
+	long int _arg4 = (long int) (arg4);				      \
+	register long int r4 asm ("%r4") = (long int) (_arg1);		      \
+	register long int r5 asm ("%r5") = (long int) (_arg2);		      \
+	register long int r6 asm ("%r6") = (long int) (_arg3);		      \
+	register long int r7 asm ("%r7") = (long int) (_arg4)
+#define SUBSTITUTE_ARGS_5(arg1, arg2, arg3, arg4, arg5) \
+	long int _arg1 = (long int) (arg1);				      \
+	long int _arg2 = (long int) (arg2);				      \
+	long int _arg3 = (long int) (arg3);				      \
+	long int _arg4 = (long int) (arg4);				      \
+	long int _arg5 = (long int) (arg5);				      \
+	register long int r4 asm ("%r4") = (long int) (_arg1);		      \
+	register long int r5 asm ("%r5") = (long int) (_arg2);		      \
+	register long int r6 asm ("%r6") = (long int) (_arg3);		      \
+	register long int r7 asm ("%r7") = (long int) (_arg4);		      \
+	register long int r0 asm ("%r0") = (long int) (_arg5)
+#define SUBSTITUTE_ARGS_6(arg1, arg2, arg3, arg4, arg5, arg6) \
+	long int _arg1 = (long int) (arg1);				      \
+	long int _arg2 = (long int) (arg2);				      \
+	long int _arg3 = (long int) (arg3);				      \
+	long int _arg4 = (long int) (arg4);				      \
+	long int _arg5 = (long int) (arg5);				      \
+	long int _arg6 = (long int) (arg6);				      \
+	register long int r4 asm ("%r4") = (long int)(_arg1);		      \
+	register long int r5 asm ("%r5") = (long int) (_arg2);		      \
+	register long int r6 asm ("%r6") = (long int) (_arg3);		      \
+	register long int r7 asm ("%r7") = (long int) (_arg4);		      \
+	register long int r0 asm ("%r0") = (long int) (_arg5);		      \
+	register long int r1 asm ("%r1") = (long int) (_arg6)
+#define SUBSTITUTE_ARGS_7(arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
+	long int _arg1 = (long int) (arg1);				      \
+	long int _arg2 = (long int) (arg2);				      \
+	long int _arg3 = (long int) (arg3);				      \
+	long int _arg4 = (long int) (arg4);				      \
+	long int _arg5 = (long int) (arg5);				      \
+	long int _arg6 = (long int) (arg6);				      \
+	long int _arg7 = (long int) (arg7);				      \
+	register long int r4 asm ("%r4") = (long int) (_arg1);		      \
+	register long int r5 asm ("%r5") = (long int) (_arg2);		      \
+	register long int r6 asm ("%r6") = (long int) (_arg3);		      \
+	register long int r7 asm ("%r7") = (long int) (_arg4);		      \
+	register long int r0 asm ("%r0") = (long int) (_arg5);		      \
+	register long int r1 asm ("%r1") = (long int) (_arg6);		      \
+	register long int r2 asm ("%r2") = (long int) (_arg7)
+
+#undef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...) \
+  ({                                                                          \
+    unsigned int resultvar = INTERNAL_SYSCALL (name, , nr, args);             \
+    if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (resultvar, ), 0))         \
+      {                                                                       \
+	__set_errno (INTERNAL_SYSCALL_ERRNO (resultvar, ));                   \
+	resultvar = 0xffffffff;                                               \
+      }                                                                       \
+    (int) resultvar; })
+
+#undef INTERNAL_SYSCALL
+#define INTERNAL_SYSCALL(name, err, nr, args...) \
+  ({									      \
+    unsigned long int resultvar;					      \
+    register long int r3 asm ("%r3") = SYS_ify (name);			      \
+    SUBSTITUTE_ARGS_##nr(args);						      \
+									      \
+    asm volatile (SYSCALL_INST_STR##nr SYSCALL_INST_PAD			      \
+		  : "=z" (resultvar)					      \
+		  : "r" (r3) ASMFMT_##nr				      \
+		  : "memory", "t");					      \
+									      \
+    (int) resultvar; })
+
+/* The _NCS variant allows non-constant syscall numbers.  */
+#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
+  ({									      \
+    unsigned long int resultvar;					      \
+    register long int r3 asm ("%r3") = (name);				      \
+    SUBSTITUTE_ARGS_##nr(args);						      \
+									      \
+    asm volatile (SYSCALL_INST_STR##nr SYSCALL_INST_PAD			      \
+		  : "=z" (resultvar)					      \
+		  : "r" (r3) ASMFMT_##nr				      \
+		  : "memory", "t");					      \
+									      \
+    (int) resultvar; })
+
+#undef INTERNAL_SYSCALL_DECL
+#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
+
+#undef INTERNAL_SYSCALL_ERROR_P
+#define INTERNAL_SYSCALL_ERROR_P(val, err) \
+  ((unsigned int) (val) >= 0xfffff001u)
+
+#undef INTERNAL_SYSCALL_ERRNO
+#define INTERNAL_SYSCALL_ERRNO(val, err)        (-(val))
+
+#endif	/* __ASSEMBLER__ */
+
+/* Pointer mangling support.  */
+#if IS_IN (rtld)
+/* We cannot use the thread descriptor because in ld.so we use setjmp
+   earlier than the descriptor is initialized.  Using a global variable
+   is too complicated here since we have no PC-relative addressing mode.  */
+#else
+# ifdef __ASSEMBLER__
+#  define PTR_MANGLE(reg, tmp) \
+     stc gbr,tmp; mov.l @(POINTER_GUARD,tmp),tmp; xor tmp,reg
+#  define PTR_MANGLE2(reg, tmp)	xor tmp,reg
+#  define PTR_DEMANGLE(reg, tmp)	PTR_MANGLE (reg, tmp)
+#  define PTR_DEMANGLE2(reg, tmp)	PTR_MANGLE2 (reg, tmp)
+# else
+#  define PTR_MANGLE(var) \
+     (var) = (void *) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
+#  define PTR_DEMANGLE(var)	PTR_MANGLE (var)
+# endif
+#endif
+
+#endif /* linux/sh/sysdep.h */