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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* 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.
*/
.file "sync_instruction_memory.s"
#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
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