1 files changed, 170 insertions, 0 deletions
diff --git a/libobjc/memory.c b/libobjc/memory.c
new file mode 100644
index 000000000..b0519fc87
--- /dev/null
+++ b/libobjc/memory.c
@@ -0,0 +1,170 @@
+/* GNU Objective C Runtime Memory allocation functions
+   Copyright (C) 1993, 1994, 1995, 1996, 1997, 2002, 2009, 2010
+   Free Software Foundation, Inc.
+   Contributed by Kresten Krab Thorup
+
+This file is part of GCC.
+
+GCC 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 3, or (at your option) any
+later version.
+
+GCC 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* This file includes the standard functions for memory allocation and
+   disposal.  Users should use these functions in their ObjC programs
+   so that they work properly with garbage collectors.  */
+
+/* TODO: Turn these into macros or inline functions.  */
+
+#include "objc-private/common.h"
+#include "objc-private/error.h"
+
+/* __USE_FIXED_PROTOTYPES__ used to be required to get prototypes for
+   malloc, free, etc. on some platforms.  It is unclear if we still
+   need it, but it can't hurt.  */
+#define __USE_FIXED_PROTOTYPES__
+#include <stdlib.h>
+
+#include "objc/runtime.h"
+
+#if OBJC_WITH_GC
+#include <gc.h>
+
+void *
+objc_malloc (size_t size)
+{
+  void *res = (void *)(GC_malloc (size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void *
+objc_atomic_malloc (size_t size)
+{
+  void *res = (void *)(GC_malloc_atomic (size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void *
+objc_realloc (void *mem, size_t size)
+{
+  void *res = (void *)(GC_realloc (mem, size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void *
+objc_calloc (size_t nelem, size_t size)
+{
+  /* Note that GC_malloc returns cleared memory (see documentation) so
+     there is no need to clear it.  */
+  void *res = (void *)(GC_malloc (nelem * size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void
+objc_free (void *mem __attribute__ ((__unused__)))
+{
+  return;
+}
+
+#else
+
+void *
+objc_malloc (size_t size)
+{
+  void *res = (void *)(malloc (size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void *
+objc_atomic_malloc (size_t size)
+{
+  void *res = (void *)(malloc (size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void *
+objc_realloc (void *mem, size_t size)
+{
+  void *res = (void *)(realloc (mem, size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void *
+objc_calloc (size_t nelem, size_t size)
+{
+  void *res = (void *)(calloc (nelem, size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+void
+objc_free (void *mem)
+{
+  free (mem);
+}
+
+#endif	/* !OBJC_WITH_GC */
+
+/* The rest of the file contains deprecated code.  */
+
+#if OBJC_WITH_GC
+
+void *
+objc_valloc (size_t size)
+{
+  void *res = (void *)(GC_malloc (size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+#else
+
+void *
+objc_valloc (size_t size)
+{
+  void *res = (void *)(malloc (size));
+  if (! res)
+    _objc_abort ("Virtual memory exhausted\n");
+  return res;
+}
+
+#endif	/* !OBJC_WITH_GC */
+
+/* Hook functions for memory allocation and disposal.  Deprecated and
+   currently unused.  */
+void *(*_objc_malloc) (size_t) = malloc;
+void *(*_objc_atomic_malloc) (size_t) = malloc;
+void *(*_objc_valloc) (size_t) = malloc;
+void *(*_objc_realloc) (void *, size_t) = realloc;
+void *(*_objc_calloc) (size_t, size_t) = calloc;
+void (*_objc_free) (void *) = free;