arch/x86/kernel/krtld/32/kobj_crt.s

   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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"
  27
  28 /*
  29  * exit routine from linker/loader to kernel
  30  */
  31
  32 #include <sys/asm_linkage.h>
  33 #include <sys/reboot.h>
  34 #include <sys/trap.h>
  35
  36 /*
  37  *  exitto is called from main() and does 1 things
  38  *      It then jumps directly to the just-loaded standalone.
  39  *      There is NO RETURN from exitto(). ????
  40  */
  41
  42
  43         .data
  44 save_esp2:
  45         .long   0
  46
  47         ENTRY(exitto)
  48         push    %ebp                    / save stack
  49         mov     %esp,%ebp
  50         pushal                          / protect secondary boot
  51
  52         movl    %esp, %eax
  53         movl    %eax, save_esp2
  54
  55         /holds address of array of pointers to functions
  56         movl    $romp, %eax
  57         movl    (%eax), %ecx
  58
  59         /holds address of bootops structure
  60         movl    $ops, %eax
  61         movl    (%eax), %ebx
  62
  63         movl    8(%ebp), %eax
  64         call   *%eax
  65
  66         movl    save_esp2, %eax
  67         movl    %eax, %esp
  68
  69         popal
  70         pop     %ebp                    / restore frame pointer
  71
  72         ret
  73         SET_SIZE(exitto)