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Annotation of sys/arch/i386/stand/libsa/exec_i386.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: exec_i386.c,v 1.32 2007/07/27 17:46:56 tom Exp $      */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 1997-1998 Michael Shalayeff
        !             5:  * Copyright (c) 1997 Tobias Weingartner
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  *
        !            17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
        !            18:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
        !            19:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            27:  * SUCH DAMAGE.
        !            28:  *
        !            29:  */
        !            30:
        !            31: #include <sys/param.h>
        !            32: #include <dev/cons.h>
        !            33: #include <stand/boot/bootarg.h>
        !            34: #include <machine/biosvar.h>
        !            35: #include <sys/disklabel.h>
        !            36: #include "disk.h"
        !            37: #include "libsa.h"
        !            38: #include <lib/libsa/loadfile.h>
        !            39:
        !            40: typedef void (*startfuncp)(int, int, int, int, int, int, int, int)
        !            41:     __attribute__ ((noreturn));
        !            42:
        !            43: char *bootmac = NULL;
        !            44:
        !            45: void
        !            46: run_loadfile(u_long *marks, int howto)
        !            47: {
        !            48:        u_long entry;
        !            49: #ifndef _TEST
        !            50:        dev_t bootdev = bootdev_dip->bootdev;
        !            51:        size_t ac = BOOTARG_LEN;
        !            52:        caddr_t av = (caddr_t)BOOTARG_OFF;
        !            53:        bios_consdev_t cd;
        !            54:        extern int com_speed; /* from bioscons.c */
        !            55:
        !            56:        if (sa_cleanup != NULL)
        !            57:                (*sa_cleanup)();
        !            58:
        !            59:        cd.consdev = cn_tab->cn_dev;
        !            60:        cd.conspeed = com_speed;
        !            61:        addbootarg(BOOTARG_CONSDEV, sizeof(cd), &cd);
        !            62:
        !            63:        if (bootmac != NULL)
        !            64:                addbootarg(BOOTARG_BOOTMAC, sizeof(bios_bootmac_t), bootmac);
        !            65:
        !            66:        /* Pass memory map to the kernel */
        !            67:        mem_pass();
        !            68:
        !            69:        makebootargs(av, &ac);
        !            70:
        !            71:        entry = marks[MARK_ENTRY] & 0x0fffffff;
        !            72:
        !            73:        printf("entry point at 0x%x\n", (int) entry);
        !            74:        /* stack and the gung is ok at this point, so, no need for asm setup */
        !            75:        (*(startfuncp)entry)(howto, bootdev, BOOTARG_APIVER,
        !            76:            marks[MARK_END], extmem, cnvmem, ac, (int)av);
        !            77:        /* not reached */
        !            78: #endif
        !            79: }