root/usr/src/psm/promif/ieee1275/common/prom_interp.c
/*
 * 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 (c) 1991-1997,2001 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#pragma ident   "%Z%%M% %I%     %E% SMI"

#include <sys/promif.h>
#include <sys/promimpl.h>

void
prom_interpret(char *string, uintptr_t arg1, uintptr_t arg2, uintptr_t arg3,
    uintptr_t arg4, uintptr_t arg5)
{
        cell_t ci[9];
        promif_owrap_t *ow;

        /*
         * NB: It is not possible to provide a compatible interface
         * here, if the size of an int is different from the size of a
         * cell, since we don't know how to promote the arguments.  We
         * simply promote arguments treating them as unsigned integers;
         * thus pointers will be properly promoted and negative signed
         * integer value will not be properly promoted.  This isn't an
         * issue for LP64 client programs since this code will simply
         * pass the entire 64-bit arguments through unchanged.
         *
         * XXX: This is not fully capable via this interface.  Use
         * p1275_cif_handler directly for all features.  Specifically,
         * there's no catch_result and no result cells available via this
         * interface.  This interface provided for compatibilty with
         * existing OBP code.  Note that we also assume that the
         * arguments are not to be sign extended.  Assuming the code
         * using these arguments is written correctly, this should be OK.
         */

        ci[0] = p1275_ptr2cell("interpret");    /* Service name */
        ci[1] = (cell_t)6;                      /* #argument cells */
        ci[2] = (cell_t)0;                      /* #return cells */
        ci[3] = p1275_ptr2cell(string);         /* Arg1: Interpreted string */
        ci[4] = p1275_uintptr2cell(arg1);       /* Arg2: stack arg 1 */
        ci[5] = p1275_uintptr2cell(arg2);       /* Arg3: stack arg 2 */
        ci[6] = p1275_uintptr2cell(arg3);       /* Arg4: stack arg 3 */
        ci[7] = p1275_uintptr2cell(arg4);       /* Arg5: stack arg 4 */
        ci[8] = p1275_uintptr2cell(arg5);       /* Arg6: stack arg 5 */

        ow = promif_preout();
        promif_preprom();
        (void) p1275_cif_handler(&ci);
        promif_postprom();
        promif_postout(ow);
}