Return to XSRT0.S CVS log

Up to [local] / sys / arch / mvme68k / stand / sboot

Annotation of sys/arch/mvme68k/stand/sboot/XSRT0.S, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: XSRT0.S,v 1.5 2003/06/04 16:36:14 deraadt Exp $ */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 1995 Theo de Raadt
        !             5:  *
        !             6:  * Redistribution and use in source and binary forms, with or without
        !             7:  * modification, are permitted provided that the following conditions
        !             8:  * are met:
        !             9:  * 1. Redistributions of source code must retain the above copyright
        !            10:  *    notice, this list of conditions and the following disclaimer.
        !            11:  * 2. Redistributions in binary form must reproduce the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer in the
        !            13:  *    documentation and/or other materials provided with the distribution.
        !            14:  *
        !            15:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
        !            16:  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            18:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
        !            19:  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            20:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            21:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            22:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            23:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            24:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            25:  * SUCH DAMAGE.
        !            26:  *
        !            27:  * Copyright (c) 1995 Charles D. Cranor
        !            28:  * All rights reserved.
        !            29:  *
        !            30:  * Redistribution and use in source and binary forms, with or without
        !            31:  * modification, are permitted provided that the following conditions
        !            32:  * are met:
        !            33:  * 1. Redistributions of source code must retain the above copyright
        !            34:  *    notice, this list of conditions and the following disclaimer.
        !            35:  * 2. Redistributions in binary form must reproduce the above copyright
        !            36:  *    notice, this list of conditions and the following disclaimer in the
        !            37:  *    documentation and/or other materials provided with the distribution.
        !            38:  * 3. All advertising materials mentioning features or use of this software
        !            39:  *    must display the following acknowledgement:
        !            40:  *      This product includes software developed by Charles D. Cranor.
        !            41:  * 4. The name of the author may not be used to endorse or promote products
        !            42:  *    derived from this software without specific prior written permission.
        !            43:  *
        !            44:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            45:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            46:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            47:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
        !            48:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            49:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            50:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            51:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            52:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            53:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            54:  */
        !            55:
        !            56:                | start at 0x4000, load at 0xa000, stack at 0x9ff0.
        !            57:                .text
        !            58:                .globl start
        !            59: start:         movb    #0,_reboot
        !            60:                jra     Ldoit
        !            61: restart:       movb    #1,_reboot              | fall through
        !            62:
        !            63: Ldoit:         movl    #0x00006ff0,sp
        !            64:                jsr     _main
        !            65:
        !            66:                .globl  ___main
        !            67: ___main:       rts
        !            68:
        !            69: Lname:
        !            70:        .ascii "sboot\0"
        !            71:
        !            72: .globl  _go
        !            73: _go:
        !            74:        clrl    d0              | dev lun
        !            75:        clrl    d1              | ctrl lun
        !            76:        movl    #0x2c, d4       | flags for IPL
        !            77:        movl    #0xfffe1800, a0 | address of "disk" ctrl
        !            78:        movl    sp@(4), a1      | entry point of loaded program
        !            79:        movl    d0, a2          | media config block (NULL)
        !            80:        movl    sp@(8), a3      | nb args (start)
        !            81:        movl    sp@(12), a4     | nb end args
        !            82:        movl    #Lname, a5      | args
        !            83:        movl    #Lname+5, a6    | end args
        !            84:                                | SRT0 will set stack
        !            85:        jmp     a1@             | GO!