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  * Copyright 2019 Joyent, Inc.
  25  */
  26 
  27 /*
  28  * exit routine from linker/loader to kernel
  29  */
  30 
  31 #include <sys/asm_linkage.h>
  32 #include <sys/reboot.h>
  33 
  34 /*
  35  *  exitto is called from main() and does 1 things
  36  *      It then jumps directly to the just-loaded standalone.
  37  *      There is NO RETURN from exitto().
  38  */
  39 
  40 
  41         ENTRY(exitto)
  42 
  43         /preserve destination in temporary register %r11
  44         movq    %rdi, %r11
  45 
  46         /holds address of array of pointers to functions
  47         / $arg1
  48         movq    $romp, %rax
  49         movq    (%rax), %rdi
  50 
  51         /holds address of bootops structure
  52         / $arg2
  53         movq    $ops, %rax
  54         movq    (%rax), %rdx
  55 
  56         / Call destination
  57         INDIRECT_CALL_REG(r11)
  58 
  59         SET_SIZE(exitto)
  60