gen/cache.c

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /* cache control */
  26
  27 #include <stdlib.h>
  28 #include <stddef.h>
  29 #include <errno.h>
  30 #include <sys/types.h>
  31
  32 static const unsigned int kCacheOptionsSyncForExecution = 0x1;
  33 extern void sys_icache_invalidate(void *, size_t);
  34
  35 int
  36 sys_cache_control(unsigned int options, caddr_t start, size_t len)
  37 {
  38      if (options == kCacheOptionsSyncForExecution) {
  39           sys_icache_invalidate(start, len);
  40           return 0;
  41      }
  42      return ENOTSUP;
  43 }