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, 0 insertions, 162 deletions

diff --git a/sysdeps/m68k/backtrace.c b/sysdeps/m68k/backtrace.c
deleted file mode 100644
index 13ed3d86af..0000000000
--- a/sysdeps/m68k/backtrace.c
+++ /dev/null
@@ -1,162 +0,0 @@
-/* Return backtrace of current program state.
-   Copyright (C) 2013-2017 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 <libc-lock.h>
-#include <dlfcn.h>
-#include <execinfo.h>
-#include <stdlib.h>
-#include <unwind.h>
-
-struct trace_arg
-{
-  void **array;
-  int cnt, size;
-  void *lastfp, *lastsp;
-};
-
-#ifdef SHARED
-static _Unwind_Reason_Code (*unwind_backtrace) (_Unwind_Trace_Fn, void *);
-static _Unwind_Ptr (*unwind_getip) (struct _Unwind_Context *);
-static _Unwind_Ptr (*unwind_getcfa) (struct _Unwind_Context *);
-static _Unwind_Ptr (*unwind_getgr) (struct _Unwind_Context *, int);
-static void *libgcc_handle;
-
-static void
-init (void)
-{
-  libgcc_handle = __libc_dlopen ("libgcc_s.so.2");
-
-  if (libgcc_handle == NULL)
-    return;
-
-  unwind_backtrace = __libc_dlsym (libgcc_handle, "_Unwind_Backtrace");
-  unwind_getip = __libc_dlsym (libgcc_handle, "_Unwind_GetIP");
-  unwind_getcfa = __libc_dlsym (libgcc_handle, "_Unwind_GetCFA");
-  unwind_getgr = __libc_dlsym (libgcc_handle, "_Unwind_GetGR");
-  if (unwind_getip == NULL || unwind_getgr == NULL || unwind_getcfa == NULL)
-    {
-      unwind_backtrace = NULL;
-      __libc_dlclose (libgcc_handle);
-      libgcc_handle = NULL;
-    }
-}
-#else
-# define unwind_backtrace _Unwind_Backtrace
-# define unwind_getip _Unwind_GetIP
-# define unwind_getcfa _Unwind_GetCFA
-# define unwind_getgr _Unwind_GetGR
-#endif
-
-static _Unwind_Reason_Code
-backtrace_helper (struct _Unwind_Context *ctx, void *a)
-{
-  struct trace_arg *arg = a;
-
-  /* We are first called with address in the __backtrace function.
-     Skip it.  */
-  if (arg->cnt != -1)
-    arg->array[arg->cnt] = (void *) unwind_getip (ctx);
-  if (++arg->cnt == arg->size)
-    return _URC_END_OF_STACK;
-
-  /* %fp is DWARF2 register 14 on M68K.  */
-  arg->lastfp = (void *) unwind_getgr (ctx, 14);
-  arg->lastsp = (void *) unwind_getcfa (ctx);
-  return _URC_NO_REASON;
-}
-
-
-/* This is a global variable set at program start time.  It marks the
-   highest used stack address.  */
-extern void *__libc_stack_end;
-
-
-/* This is the stack layout we see with every stack frame
-   if not compiled without frame pointer.
-
-           +-----------------+       +-----------------+
-    %fp -> | %fp last frame--------> | %fp last frame--->...
-           |                 |       |                 |
-           | return address  |       | return address  |
-           +-----------------+       +-----------------+
-
-   First try as far to get as far as possible using
-   _Unwind_Backtrace which handles -fomit-frame-pointer
-   as well, but requires .eh_frame info.  Then fall back to
-   walking the stack manually.  */
-
-struct layout
-{
-  struct layout *fp;
-  void *ret;
-};
-
-
-int
-__backtrace (void **array, int size)
-{
-  struct trace_arg arg = { .array = array, .size = size, .cnt = -1 };
-
-  if (size <= 0)
-    return 0;
-
-#ifdef SHARED
-  __libc_once_define (static, once);
-
-  __libc_once (once, init);
-  if (unwind_backtrace == NULL)
-    return 0;
-#endif
-
-  unwind_backtrace (backtrace_helper, &arg);
-
-  if (arg.cnt > 1 && arg.array[arg.cnt - 1] == NULL)
-    --arg.cnt;
-  else if (arg.cnt < size)
-    {
-      struct layout *fp = (struct layout *) arg.lastfp;
-
-      while (arg.cnt < size)
-	{
-	  /* Check for out of range.  */
-	  if ((void *) fp < arg.lastsp || (void *) fp > __libc_stack_end
-	      || ((long) fp & 1))
-	    break;
-
-	  array[arg.cnt++] = fp->ret;
-	  fp = fp->fp;
-	}
-    }
-  return arg.cnt != -1 ? arg.cnt : 0;
-}
-weak_alias (__backtrace, backtrace)
-libc_hidden_def (__backtrace)
-
-
-#ifdef SHARED
-/* Free all resources if necessary.  */
-libc_freeres_fn (free_mem)
-{
-  unwind_backtrace = NULL;
-  if (libgcc_handle != NULL)
-    {
-      __libc_dlclose (libgcc_handle);
-      libgcc_handle = NULL;
-    }
-}
-#endif