zephyr/arch/x86/cache_s.S

/* cache_s.S - cache manipulation */

/*
 * Copyright (c) 2013-2014 Wind River Systems, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1) Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2) Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3) Neither the name of Wind River Systems nor the names of its contributors
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
/*
DESCRIPTION
This module contains functions for manipulating caches.
 */

#ifndef CONFIG_CLFLUSH_INSTRUCTION_SUPPORTED

#define _ASMLANGUAGE
#include <arch/x86/asm.h>

	/* externs (internal APIs) */
	GTEXT(_SysCacheFlush)

/**
 *
 * _SysCacheFlush - flush a page to main memory
 *
 * This implementation flushes the whole cache.
 *
 * C signature:
 *
 *   void _SysCacheFlush (VIRT_ADDR virt, size_t size)
 *
 * Both parameters are ignored in this implementation.
 *
 * RETURNS: N/A
 */

SECTION_FUNC(TEXT, _SysCacheFlush)
	wbinvd
	ret

#endif /* !CONFIG_CLFLUSH_INSTRUCTION_SUPPORTED */