67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/*
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* Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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#ifndef _OS_CACHE_CONTROL_H_
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#define _OS_CACHE_CONTROL_H_
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#include <stddef.h>
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#include <sys/cdefs.h>
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#include <stdint.h>
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#include <Availability.h>
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__BEGIN_DECLS
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/* Functions performed by sys_cache_control(): */
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/* Prepare memory for execution. This should be called
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* after writing machine instructions to memory, before
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* executing them. It syncs the dcache and icache.
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* On IA32 processors this function is a NOP, because
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* no synchronization is required.
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*/
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#define kCacheFunctionPrepareForExecution 1
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/* Flush data cache(s). This ensures that cached data
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* makes it all the way out to DRAM, and then removes
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* copies of the data from all processor caches.
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* It can be useful when dealing with cache incoherent
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* devices or DMA.
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*/
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#define kCacheFunctionFlushDcache 2
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/* perform one of the above cache functions: */
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int sys_cache_control( int function, void *start, size_t len) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
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/* equivalent to sys_cache_control(kCacheFunctionPrepareForExecution): */
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void sys_icache_invalidate( void *start, size_t len) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
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/* equivalent to sys_cache_control(kCacheFunctionFlushDcache): */
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void sys_dcache_flush( void *start, size_t len) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
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__END_DECLS
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#endif /* _OS_CACHE_CONTROL_H_ */
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