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, 234 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h b/REORG.TODO/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h
new file mode 100644
index 0000000000..a88f164961
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h
@@ -0,0 +1,234 @@
+/* Copyright (C) 1992-2017 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/>.  */
+
+#ifndef _LINUX_POWERPC_SYSDEP_H
+#define _LINUX_POWERPC_SYSDEP_H 1
+
+#include <sysdeps/unix/sysv/linux/sysdep.h>
+#include <sysdeps/unix/powerpc/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
+
+#ifndef __ASSEMBLER__
+
+# include <errno.h>
+
+/* Define a macro which expands inline into the wrapper code for a VDSO
+   call. This use is for internal calls that do not need to handle errors
+   normally. It will never touch errno.
+   On powerpc a system call basically clobbers the same registers like a
+   function call, with the exception of LR (which is needed for the
+   "sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal
+   an error return status).  */
+# define INTERNAL_VSYSCALL_CALL_TYPE(funcptr, err, nr, type, args...)	      \
+  ({									      \
+    register void *r0  __asm__ ("r0");					      \
+    register long int r3  __asm__ ("r3");				      \
+    register long int r4  __asm__ ("r4");				      \
+    register long int r5  __asm__ ("r5");				      \
+    register long int r6  __asm__ ("r6");				      \
+    register long int r7  __asm__ ("r7");				      \
+    register long int r8  __asm__ ("r8");				      \
+    register long int r9  __asm__ ("r9");				      \
+    register long int r10 __asm__ ("r10");				      \
+    register long int r11 __asm__ ("r11");				      \
+    register long int r12 __asm__ ("r12");				      \
+    register type rval  __asm__ ("r3");					      \
+    LOADARGS_##nr (funcptr, args);					      \
+    __asm__ __volatile__						      \
+      ("mtctr %0\n\t"							      \
+       "bctrl\n\t"							      \
+       "mfcr %0"							      \
+       : "+r" (r0), "+r" (r3), "+r" (r4), "+r" (r5),  "+r" (r6),  "+r" (r7),  \
+	 "+r" (r8), "+r" (r9), "+r" (r10), "+r" (r11), "+r" (r12)	      \
+       : : "cr0", "ctr", "lr", "memory");				      \
+    err = (long int) r0;						      \
+    __asm__ __volatile__ ("" : "=r" (rval) : "r" (r3), "r" (r4));	      \
+    rval;								      \
+  })
+
+#define INTERNAL_VSYSCALL_CALL(funcptr, err, nr, args...) \
+  INTERNAL_VSYSCALL_CALL_TYPE(funcptr, err, nr, long int, args)
+
+# undef INLINE_SYSCALL
+# define INLINE_SYSCALL(name, nr, args...)				\
+  ({									\
+    INTERNAL_SYSCALL_DECL (sc_err);					\
+    long int sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, args);	\
+    if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err))			\
+      {									\
+	__set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err));		\
+	sc_ret = -1L;							\
+      }									\
+    sc_ret;								\
+  })
+
+/* Define a macro which expands inline into the wrapper code for a system
+   call. This use is for internal calls that do not need to handle errors
+   normally. It will never touch errno.
+   On powerpc a system call basically clobbers the same registers like a
+   function call, with the exception of LR (which is needed for the
+   "sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal
+   an error return status).  */
+
+# undef INTERNAL_SYSCALL_DECL
+# define INTERNAL_SYSCALL_DECL(err) long int err __attribute__ ((unused))
+
+# undef INTERNAL_SYSCALL
+# define INTERNAL_SYSCALL_NCS(name, err, nr, args...)			\
+  ({									\
+    register long int r0  __asm__ ("r0");				\
+    register long int r3  __asm__ ("r3");				\
+    register long int r4  __asm__ ("r4");				\
+    register long int r5  __asm__ ("r5");				\
+    register long int r6  __asm__ ("r6");				\
+    register long int r7  __asm__ ("r7");				\
+    register long int r8  __asm__ ("r8");				\
+    register long int r9  __asm__ ("r9");				\
+    register long int r10 __asm__ ("r10");				\
+    register long int r11 __asm__ ("r11");				\
+    register long int r12 __asm__ ("r12");				\
+    LOADARGS_##nr(name, args);						\
+    ABORT_TRANSACTION;							\
+    __asm__ __volatile__						\
+      ("sc   \n\t"							\
+       "mfcr %0"							\
+       : "=&r" (r0),							\
+	 "=&r" (r3), "=&r" (r4), "=&r" (r5),  "=&r" (r6),  "=&r" (r7),	\
+	 "=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12)	\
+       : ASM_INPUT_##nr							\
+       : "cr0", "ctr", "memory");					\
+    err = r0;								\
+    (int) r3;								\
+  })
+# define INTERNAL_SYSCALL(name, err, nr, args...) \
+  INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args)
+
+# undef INTERNAL_SYSCALL_ERROR_P
+# define INTERNAL_SYSCALL_ERROR_P(val, err) \
+  ((void) (val), __builtin_expect ((err) & (1 << 28), 0))
+
+# undef INTERNAL_SYSCALL_ERRNO
+# define INTERNAL_SYSCALL_ERRNO(val, err)     (val)
+
+# define INTERNAL_VSYSCALL_NO_SYSCALL_FALLBACK(name, err, type, nr, args...)  \
+  ({									      \
+    type sc_ret = ENOSYS;						      \
+									      \
+    __typeof (__vdso_##name) vdsop = __vdso_##name;			      \
+    PTR_DEMANGLE (vdsop);						      \
+    if (vdsop != NULL)							      \
+      sc_ret = 								      \
+        INTERNAL_VSYSCALL_CALL_TYPE (vdsop, err, nr, type, ##args);	      \
+    else								      \
+      err = 1 << 28;							      \
+    sc_ret;								      \
+  })
+
+/* List of system calls which are supported as vsyscalls.  */
+# define HAVE_CLOCK_GETRES_VSYSCALL	1
+# define HAVE_CLOCK_GETTIME_VSYSCALL	1
+# define HAVE_GETCPU_VSYSCALL		1
+
+
+# define LOADARGS_0(name, dummy)					      \
+	r0 = name
+# define LOADARGS_1(name, __arg1) \
+	long int arg1 = (long int) (__arg1);	\
+  LOADARGS_0(name, 0);					   \
+	extern void __illegally_sized_syscall_arg1 (void); \
+	if (__builtin_classify_type (__arg1) != 5 && sizeof (__arg1) > 4) \
+	  __illegally_sized_syscall_arg1 (); \
+	r3 = arg1
+# define LOADARGS_2(name, __arg1, __arg2) \
+	long int arg2 = (long int) (__arg2); \
+	LOADARGS_1(name, __arg1); \
+	extern void __illegally_sized_syscall_arg2 (void); \
+	if (__builtin_classify_type (__arg2) != 5 && sizeof (__arg2) > 4) \
+	  __illegally_sized_syscall_arg2 (); \
+	r4 = arg2
+# define LOADARGS_3(name, __arg1, __arg2, __arg3) \
+	long int arg3 = (long int) (__arg3); \
+	LOADARGS_2(name, __arg1, __arg2); \
+	extern void __illegally_sized_syscall_arg3 (void); \
+	if (__builtin_classify_type (__arg3) != 5 && sizeof (__arg3) > 4) \
+	  __illegally_sized_syscall_arg3 (); \
+	r5 = arg3
+# define LOADARGS_4(name, __arg1, __arg2, __arg3, __arg4) \
+	long int arg4 = (long int) (__arg4); \
+	LOADARGS_3(name, __arg1, __arg2, __arg3); \
+	extern void __illegally_sized_syscall_arg4 (void); \
+	if (__builtin_classify_type (__arg4) != 5 && sizeof (__arg4) > 4) \
+	  __illegally_sized_syscall_arg4 (); \
+	r6 = arg4
+# define LOADARGS_5(name, __arg1, __arg2, __arg3, __arg4, __arg5) \
+	long int arg5 = (long int) (__arg5); \
+	LOADARGS_4(name, __arg1, __arg2, __arg3, __arg4); \
+	extern void __illegally_sized_syscall_arg5 (void); \
+	if (__builtin_classify_type (__arg5) != 5 && sizeof (__arg5) > 4) \
+	  __illegally_sized_syscall_arg5 (); \
+	r7 = arg5
+# define LOADARGS_6(name, __arg1, __arg2, __arg3, __arg4, __arg5, __arg6) \
+	long int arg6 = (long int) (__arg6); \
+	LOADARGS_5(name, __arg1, __arg2, __arg3, __arg4, __arg5); \
+	extern void __illegally_sized_syscall_arg6 (void); \
+	if (__builtin_classify_type (__arg6) != 5 && sizeof (__arg6) > 4) \
+	  __illegally_sized_syscall_arg6 (); \
+	r8 = arg6
+
+# define ASM_INPUT_0 "0" (r0)
+# define ASM_INPUT_1 ASM_INPUT_0, "1" (r3)
+# define ASM_INPUT_2 ASM_INPUT_1, "2" (r4)
+# define ASM_INPUT_3 ASM_INPUT_2, "3" (r5)
+# define ASM_INPUT_4 ASM_INPUT_3, "4" (r6)
+# define ASM_INPUT_5 ASM_INPUT_4, "5" (r7)
+# define ASM_INPUT_6 ASM_INPUT_5, "6" (r8)
+
+#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.  */
+#else
+# ifdef __ASSEMBLER__
+#  define PTR_MANGLE(reg, tmpreg) \
+	lwz	tmpreg,POINTER_GUARD(r2); \
+	xor	reg,tmpreg,reg
+#  define PTR_MANGLE2(reg, tmpreg) \
+	xor	reg,tmpreg,reg
+#  define PTR_MANGLE3(destreg, reg, tmpreg) \
+	lwz	tmpreg,POINTER_GUARD(r2); \
+	xor	destreg,tmpreg,reg
+#  define PTR_DEMANGLE(reg, tmpreg) PTR_MANGLE (reg, tmpreg)
+#  define PTR_DEMANGLE2(reg, tmpreg) PTR_MANGLE2 (reg, tmpreg)
+#  define PTR_DEMANGLE3(destreg, reg, tmpreg) PTR_MANGLE3 (destreg, reg, tmpreg)
+# else
+#  define PTR_MANGLE(var) \
+  (var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
+#  define PTR_DEMANGLE(var)	PTR_MANGLE (var)
+# endif
+#endif
+
+#endif /* linux/powerpc/powerpc32/sysdep.h */