usr/src/psm/promif/ieee1275/common/prom_interp.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 1991-1997,2001 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <sys/promif.h>
  30 #include <sys/promimpl.h>
  31
  32 void
  33 prom_interpret(char *string, uintptr_t arg1, uintptr_t arg2, uintptr_t arg3,
  34     uintptr_t arg4, uintptr_t arg5)
  35 {
  36         cell_t ci[9];
  37         promif_owrap_t *ow;
  38
  39         /*
  40          * NB: It is not possible to provide a compatible interface
  41          * here, if the size of an int is different from the size of a
  42          * cell, since we don't know how to promote the arguments.  We
  43          * simply promote arguments treating them as unsigned integers;
  44          * thus pointers will be properly promoted and negative signed
  45          * integer value will not be properly promoted.  This isn't an
  46          * issue for LP64 client programs since this code will simply
  47          * pass the entire 64-bit arguments through unchanged.
  48          *
  49          * XXX: This is not fully capable via this interface.  Use
  50          * p1275_cif_handler directly for all features.  Specifically,
  51          * there's no catch_result and no result cells available via this
  52          * interface.  This interface provided for compatibilty with
  53          * existing OBP code.  Note that we also assume that the
  54          * arguments are not to be sign extended.  Assuming the code
  55          * using these arguments is written correctly, this should be OK.
  56          */
  57
  58         ci[0] = p1275_ptr2cell("interpret");    /* Service name */
  59         ci[1] = (cell_t)6;                      /* #argument cells */
  60         ci[2] = (cell_t)0;                      /* #return cells */
  61         ci[3] = p1275_ptr2cell(string);         /* Arg1: Interpreted string */
  62         ci[4] = p1275_uintptr2cell(arg1);       /* Arg2: stack arg 1 */
  63         ci[5] = p1275_uintptr2cell(arg2);       /* Arg3: stack arg 2 */
  64         ci[6] = p1275_uintptr2cell(arg3);       /* Arg4: stack arg 3 */
  65         ci[7] = p1275_uintptr2cell(arg4);       /* Arg5: stack arg 4 */
  66         ci[8] = p1275_uintptr2cell(arg5);       /* Arg6: stack arg 5 */
  67
  68         ow = promif_preout();
  69         promif_preprom();
  70         (void) p1275_cif_handler(&ci);
  71         promif_postprom();
  72         promif_postout(ow);
  73 }