1 files changed, 0 insertions, 159 deletions
diff --git a/ports/sysdeps/m68k/backtrace.c b/ports/sysdeps/m68k/backtrace.c
deleted file mode 100644
index b346420442..0000000000
--- a/ports/sysdeps/m68k/backtrace.c
+++ /dev/null
@@ -1,159 +0,0 @@
-/* Return backtrace of current program state.
-   Copyright (C) 2013-2014 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 <bits/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 };
-#ifdef SHARED
-  __libc_once_define (static, once);
-
-  __libc_once (once, init);
-  if (unwind_backtrace == NULL)
-    return 0;
-#endif
-
-  if (size >= 1)
-    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