--- /dev/null
+++ Libc/Libc-391.4.3/include/objc/zone.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#ifndef _OBJC_ZONE_H_
+#define _OBJC_ZONE_H_
+
+#import <malloc/malloc.h>
+
+typedef malloc_zone_t NXZone;
+
+#define NX_NOZONE  ((NXZone *)0)
+
+/*********	Interface to zone based malloc	************/
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+extern NXZone *NXDefaultMallocZone(void);
+    // Returns the default zone used by the malloc(3) calls
+
+extern NXZone *NXCreateZone(size_t startSize, size_t granularity, int canFree);
+    // Create a new zone with its own memory pool.
+    // canfree: if 0 the allocator will never free memory and mallocing will be fast
+
+extern void NXNameZone(NXZone *z, const char *name);
+    // name a zone; The string will be copied
+
+extern void *NXZoneMalloc(malloc_zone_t *zone, size_t size);
+
+extern void *NXZoneRealloc(malloc_zone_t *zone, void *ptr, size_t size);
+
+extern void *NXZoneCalloc(NXZone *zonep, size_t numElems, size_t byteSize);
+    // Allocates and then clears
+
+extern void NXZoneFree(malloc_zone_t *zone, void *ptr);
+
+extern void NXDestroyZone(malloc_zone_t *zone);
+
+extern NXZone *NXZoneFromPtr(void *ptr);
+    // Returns the zone for a pointer, or NX_NOZONE if not in any zone.
+    // The ptr must have been returned from a malloc or realloc call.
+__END_DECLS
+
+#endif /* _OBJC_ZONE_H_ */