client_handler.s revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#if !defined(__lint)
#include <sys/asm_linkage.h>
#include <sys/privregs.h>
#endif
/*
* The interface for a client programs that call the 64-bit romvec OBP
*/
#if defined(__lint)
/* ARGSUSED */
int
client_handler(void *cif_handler, void *arg_array)
{
return (0);
}
#else /* __lint */
ENTRY(client_handler)
save %sp, -SA64(MINFRAME64), %sp ! 32 bit frame, 64 bit sized
mov %i1, %o0
1:
rdpr %pstate, %l4 ! Get the present pstate value
andn %l4, PSTATE_AM, %l6
wrpr %l6, 0, %pstate ! Set PSTATE_AM = 0
jmpl %i0, %o7 ! Call cif handler
nop
wrpr %l4, 0, %pstate ! Just restore
ret ! Return result ...
restore %o0, %g0, %o0 ! delay; result in %o0
SET_SIZE(client_handler)
#endif /* __lint */