sys/arch/hp700/stand/common/exec_hppa.c

   1 /*      $NetBSD: exec_hppa.c,v 1.4 2009/05/08 09:33:59 skrll Exp $      */
   2
   3 /*      $OpenBSD: exec_hppa.c,v 1.7 1999/05/06 02:13:15 mickey Exp $    */
   4
   5 /*
   6  * Copyright (c) 1998-2004 Michael Shalayeff
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  24  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  28  * THE POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  */
  31
  32 #include <sys/param.h>
  33 #include <sys/exec.h>
  34 #include <sys/reboot.h>
  35 #include <dev/cons.h>
  36 #include <stand/boot/bootarg.h>
  37 #include <sys/disklabel.h>
  38 #include "libsa.h"
  39 #include <lib/libsa/exec.h>
  40
  41 #include <machine/pdc.h>
  42 #include "dev_hppa.h"
  43
  44 typedef void (*startfuncp)(int, int, int, int, int, int, void *)
  45     __attribute__ ((noreturn));
  46
  47 void
  48 machdep_exec(struct x_param *xp, int howto, void *loadaddr)
  49 {
  50 #ifdef EXEC_DEBUG
  51         extern int debug;
  52         int i;
  53 #endif
  54         size_t ac = BOOTARG_LEN;
  55         void *av = (void *)BOOTARG_OFF;
  56 #ifdef notyet
  57         makebootargs(av, &ac);
  58 #endif
  59
  60 #ifdef EXEC_DEBUG
  61         if (debug) {
  62                 printf("ep=0x%x [", xp->xp_entry);
  63                 for (i = 0; i < 10240; i++) {
  64                         if (!(i % 8)) {
  65                                 printf("\b\n%p:", &((u_int *)xp->xp_entry)[i]);
  66                                 if (getchar() != ' ')
  67                                         break;
  68                         }
  69                         printf("%x,", ((int *)xp->xp_entry)[i]);
  70                 }
  71                 printf("\b\b ]\n");
  72         }
  73 #endif
  74
  75         fcacheall();
  76
  77         __asm("mtctl %r0, %cr17");
  78         __asm("mtctl %r0, %cr17");
  79         /* stack and the gung is ok at this point, so, no need for asm setup */
  80         (*(startfuncp)(xp->xp_entry)) ((int)pdc, howto, bootdev, xp->xp_end,
  81                                        BOOTARG_APIVER, ac, av);
  82         /* not reached */
  83 }