gen/cache.c

   1 /*
   2  * Copyright (c) 2003-2006 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /* cache control */
  24
  25 #include <stdlib.h>
  26 #include <stddef.h>
  27 #include <errno.h>
  28 #include <sys/types.h>
  29 #include <libkern/OSCacheControl.h>
  30
  31
  32 int
  33 sys_cache_control(int function, void *start, size_t len)
  34 {
  35         int     status = 0;
  36
  37         switch( function ) {
  38
  39         case kCacheFunctionPrepareForExecution:
  40                 sys_icache_invalidate(start, len);
  41                 break;
  42
  43         case kCacheFunctionFlushDcache:
  44                 sys_dcache_flush(start, len);
  45                 break;
  46
  47         default:
  48                 status = ENOTSUP;
  49         }
  50
  51         return  status;
  52 }