* Check in Fred Fish's changes in these modules. Fred

will make ChangeLog entries for all of them.

1 files changed, 160 insertions, 0 deletions

diff --git a/gdb/mmap-alloc.c b/gdb/mmap-alloc.c
new file mode 100755
index 0000000000..5f8f0dc049
--- /dev/null
+++ b/gdb/mmap-alloc.c
@@ -0,0 +1,160 @@
+/* GDB support for special malloc using mmap.
+   Copyright 1992 Free Software Foundation, Inc.
+   Contributed by Cygnus Support, using pieces from other GDB modules.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include <stdio.h>
+#include "defs.h"
+
+#if defined (HAVE_MMAP)
+
+/* Redefine the external visible symbols in gmalloc.c to be mmap versions */
+
+#define free			_mmap_free
+#define malloc			_mmap_malloc
+#define realloc			_mmap_realloc
+#define valloc			_mmap_valloc
+
+#define _bytes_free		_mmap__bytes_free
+#define _bytes_used		_mmap__bytes_used
+#define _chunks_free		_mmap__chunks_free
+#define _chunks_used 		_mmap__chunks_used
+#define _fraghead		_mmap__fraghead
+#define _heapbase 		_mmap__heapbase
+#define _heapindex		_mmap__heapindex
+#define _heapinfo		_mmap__heapinfo
+#define _heaplimit		_mmap__heaplimit
+
+#define __default_morecore	_mmap___default_morecore
+#define __free			_mmap___free
+#define __free_hook		_mmap___free_hook
+#define __malloc_hook		_mmap___malloc_hook
+#define __malloc_initialized	_mmap___malloc_initialized
+#define __morecore		_mmap___morecore
+#define __realloc_hook		_mmap___realloc_hook
+
+/* Arrange that instead of calling sbrk() we call mmap_sbrk() */
+
+#define sbrk			mmap_sbrk
+
+/* Now simply include the standard GNU malloc source, and all the
+   externally visible symbols will become _mmap_* versions, and
+   _mmap_sbrk will be called to get more core instead of sbrk. */
+
+#include "gmalloc.c"
+
+/* Like mmap_malloc but get error if no storage available.  */
+
+PTR
+mmap_xmalloc (size)
+     long size;
+{
+  register char *val = NULL;
+
+  /* Protect against gdb wanting to allocate zero bytes. */
+
+  if (size > 0)
+    {
+      if ((val = (char *) _mmap_malloc (size)) == NULL)
+	{
+	  fatal ("virtual memory exhausted.", 0);
+	}
+    }
+  return (val);
+}
+
+/* Like mmap_realloc but get error if no storage available.  */
+
+PTR
+mmap_xrealloc (ptr, size)
+     PTR ptr;
+     long size;
+{
+  register char *val;
+
+  if ((val = (char *) _mmap_realloc (ptr, size)) == NULL)
+    {
+      fatal ("virtual memory exhausted.", 0);
+    }
+  return (val);
+}
+
+PTR
+mmap_malloc (size)
+     long size;
+{
+  return (_mmap_malloc (size));
+}
+
+PTR
+mmap_realloc (ptr, size)
+     PTR ptr;
+     long size;
+{
+  return (_mmap_realloc (ptr, size));
+}
+
+void
+mmap_free (ptr)
+     PTR ptr;
+{
+  _mmap_free (ptr);
+}
+
+#else	/* !defined (HAVE_MMAP) */
+
+static char *errmsg = "This version of gdb does not support dumpable state.";
+
+PTR
+mmap_malloc (size)
+     long size;
+{
+  error (errmsg);
+}
+
+PTR
+mmap_xmalloc (size)
+     long size;
+{
+  error (errmsg);
+}
+
+PTR
+mmap_realloc (ptr, size)
+     PTR ptr;
+     long size;
+{
+  error (errmsg);
+}
+
+PTR
+mmap_xrealloc (ptr, size)
+     PTR ptr;
+     long size;
+{
+  error (errmsg);
+}
+
+void
+mmap_free (ptr)
+     PTR ptr;
+{
+  error (errmsg);
+}
+
+#endif	/* HAVE_MMAP */