callout_cache_720.s

来自「Centrality Atlas II development software」· S 代码 · 共 41 行

#
# Copyright 2007, 2008, QNX Software Systems. 
# 
# Licensed under the Apache License, Version 2.0 (the "License"). You 
# may not reproduce, modify or distribute this software except in 
# compliance with the License. You may obtain a copy of the License 
# at: http://www.apache.org/licenses/LICENSE-2.0 
# 
# Unless required by applicable law or agreed to in writing, software 
# distributed under the License is distributed on an "AS IS" basis, 
# WITHOUT WARRANTIES OF ANY KIND, either express or implied.
#
# This file may contain contributions from others, either as 
# contributors under the License or as licensors under other terms.  
# Please review this entire file for other proprietary rights or license 
# notices, as well as the QNX Development Suite License Guide at 
# http://licensing.qnx.com/license-guide/ for other information.
#
/*
 * ARM720T specific cache operations
 *
 * unsigned control(paddr32_t base,
 *					unsigned num_lines,
 *					int flags,
 *					struct cacheattr_entry *cache,
 *					volatile struct syspage_entry * )
 */

#include "callout.ah"

CALLOUT_START(cache_720, 0, 0)
	/*
	 * Cache is write-through, so we only need to invalidate if required
	 */
	mov		r0, #0
	tst		r2, #MS_INVALIDATE
	tsteq	r2, #MS_INVALIDATE_ICACHE
	mcrne	p15, 0, r0, c7, c7, 0
	mov		pc, lr
CALLOUT_END(cache_720)