/*

 * CDDL HEADER START

 *

 * The contents of this file are subject to the terms of the

 *

 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

 * or http://www.opensolaris.org/os/licensing.

 * See the License for the specific language governing permissions

 * and limitations under the License.

 *

 * When distributing Covered Code, include this CDDL HEADER in each

 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

 * If applicable, add the following below this CDDL HEADER, with the

 * fields enclosed by brackets "[]" replaced with your own identifying

 * information: Portions Copyright [yyyy] [name of copyright owner]

 *

 * CDDL HEADER END

 */

/*

 * Copyright (c) 1995-1997, by Sun Microsystems, Inc.

 * All rights reserved.

 */

#include <sys/asm_linkage.h>

/*

 * void sync_instruction_memory(caddr_t addr, int len)

 *

 * Make the memory at {addr, addr+len} valid for instruction execution.

 */

#ifdef lint

#define	nop

void

sync_instruction_memory(caddr_t addr, int len)

{

	caddr_t end = addr + len;

	caddr_t start = addr & ~7;

	for (; start < end; start += 8)

		flush(start);

	nop; nop; nop; nop; nop;

	return;

}

#else

	ENTRY(sync_instruction_memory)

	add	%o0, %o1, %o2

	andn	%o0, 7, %o0

	cmp	%o0, %o2

	bgeu	2f

	nop

	flush	%o0

1:

	add	%o0, 8, %o0

	cmp	%o0, %o2

	blu,a	1b

	flush	%o0

	!

	! when we get here, we have executed 3 instructions after the

	! last flush; SPARC V8 requires 2 more for flush to be visible

	! The retl;nop pair will do it.

	!

2:

	retl

	clr	%o0

	SET_SIZE(sync_instruction_memory)

	ENTRY(nop)

	retl

	nop

	SET_SIZE(nop)

#endif