root/sys/arch/news68k/stand/bootxx/start.S
/*      $NetBSD: start.S,v 1.4 2023/10/08 03:57:47 tsutsui Exp $        */

/*-
 * Copyright (c) 1999 Izumi Tsutsui.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <m68k/asm.h>

        .text
        .align  4

ASENTRY_NOPROFILE(start)
        jra     1f
        .word   0
        .word   0
        .word   0
        .word   0
        .word   0
        .word   0


        /* disklabel here */
        .space  0x1f0

1:
        lea     0x3e0000,%sp    |
        movl    %d7,%sp@-       | %d7: bootargs
        movl    %d6,%sp@-       | %d6: bootdev
        movl    %d5,%sp@-       | %d5: kernel
        movl    %d4,%sp@-       | %d4: physmem

        jbsr    _C_LABEL(bootxx)
        lea     %sp@(16),%sp

        jra     _C_LABEL(rom_halt)