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Annotation of sys/arch/i386/stand/libsa/exec_i386.c, Revision 1.1.1.1

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: }