projects / apple / libplatform.git / blame
| Commit | Line | Data |
|---|---|---|
| ada7c492 A |
1 | /* |
| 2 | * Copyright (c) 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 | ||
| 24 | #ifndef _OS_CACHE_CONTROL_H_ | |
| 25 | #define _OS_CACHE_CONTROL_H_ | |
| 26 | ||
| 27 | #include <stddef.h> | |
| 28 | #include <sys/cdefs.h> | |
| 29 | #include <stdint.h> | |
| 30 | #include <Availability.h> | |
| 31 | ||
| 32 | __BEGIN_DECLS | |
| 33 | ||
| 34 | ||
| 35 | /* Functions performed by sys_cache_control(): */ | |
| 36 | ||
| 37 | /* Prepare memory for execution. This should be called | |
| 38 | * after writing machine instructions to memory, before | |
| 39 | * executing them. It syncs the dcache and icache. | |
| 40 | * On IA32 processors this function is a NOP, because | |
| 41 | * no synchronization is required. | |
| 42 | */ | |
| 43 | #define kCacheFunctionPrepareForExecution 1 | |
| 44 | ||
| 45 | /* Flush data cache(s). This ensures that cached data | |
| 46 | * makes it all the way out to DRAM, and then removes | |
| 47 | * copies of the data from all processor caches. | |
| 48 | * It can be useful when dealing with cache incoherent | |
| 49 | * devices or DMA. | |
| 50 | */ | |
| 51 | #define kCacheFunctionFlushDcache 2 | |
| 52 | ||
| 53 | ||
| 54 | /* perform one of the above cache functions: */ | |
| 55 | int sys_cache_control( int function, void *start, size_t len) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); | |
| 56 | ||
| 57 | /* equivalent to sys_cache_control(kCacheFunctionPrepareForExecution): */ | |
| 58 | void sys_icache_invalidate( void *start, size_t len) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); | |
| 59 | ||
| 60 | /* equivalent to sys_cache_control(kCacheFunctionFlushDcache): */ | |
| 61 | void sys_dcache_flush( void *start, size_t len) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); | |
| 62 | ||
| 63 | ||
| 64 | __END_DECLS | |
| 65 | ||
| 66 | #endif /* _OS_CACHE_CONTROL_H_ */ |