exec.c revision 1.17.2.2
1 1.17.2.2 jdolecek /* $NetBSD: exec.c,v 1.17.2.2 2001/06/01 23:26:32 jdolecek Exp $ */ 2 1.17.2.2 jdolecek 3 1.17.2.2 jdolecek /* 4 1.17.2.2 jdolecek * Copyright (c) 1982, 1986, 1990, 1993 5 1.17.2.2 jdolecek * The Regents of the University of California. All rights reserved. 6 1.17.2.2 jdolecek * Copyright (c) 1996 7 1.17.2.2 jdolecek * Matthias Drochner. All rights reserved. 8 1.17.2.2 jdolecek * Copyright (c) 1996 9 1.17.2.2 jdolecek * Perry E. Metzger. All rights reserved. 10 1.17.2.2 jdolecek * Copyright (c) 1997 11 1.17.2.2 jdolecek * Martin Husemann. All rights reserved. 12 1.17.2.2 jdolecek * 13 1.17.2.2 jdolecek * Redistribution and use in source and binary forms, with or without 14 1.17.2.2 jdolecek * modification, are permitted provided that the following conditions 15 1.17.2.2 jdolecek * are met: 16 1.17.2.2 jdolecek * 1. Redistributions of source code must retain the above copyright 17 1.17.2.2 jdolecek * notice, this list of conditions and the following disclaimer. 18 1.17.2.2 jdolecek * 2. Redistributions in binary form must reproduce the above copyright 19 1.17.2.2 jdolecek * notice, this list of conditions and the following disclaimer in the 20 1.17.2.2 jdolecek * documentation and/or other materials provided with the distribution. 21 1.17.2.2 jdolecek * 3. All advertising materials mentioning features or use of this software 22 1.17.2.2 jdolecek * must display the following acknowledgement: 23 1.17.2.2 jdolecek * This product includes software developed by the University of 24 1.17.2.2 jdolecek * California, Berkeley and its contributors. 25 1.17.2.2 jdolecek * 4. Neither the name of the University nor the names of its contributors 26 1.17.2.2 jdolecek * may be used to endorse or promote products derived from this software 27 1.17.2.2 jdolecek * without specific prior written permission. 28 1.17.2.2 jdolecek * 29 1.17.2.2 jdolecek * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 1.17.2.2 jdolecek * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 1.17.2.2 jdolecek * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 1.17.2.2 jdolecek * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 1.17.2.2 jdolecek * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 1.17.2.2 jdolecek * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 1.17.2.2 jdolecek * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 1.17.2.2 jdolecek * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 1.17.2.2 jdolecek * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 1.17.2.2 jdolecek * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 1.17.2.2 jdolecek * SUCH DAMAGE. 40 1.17.2.2 jdolecek * 41 1.17.2.2 jdolecek * @(#)boot.c 8.1 (Berkeley) 6/10/93 42 1.17.2.2 jdolecek */ 43 1.17.2.2 jdolecek 44 1.17.2.2 jdolecek /* 45 1.17.2.2 jdolecek * starts NetBSD a.out kernel 46 1.17.2.2 jdolecek * needs lowlevel startup from startprog.S 47 1.17.2.2 jdolecek * This is a special version of exec.c to support use of XMS. 48 1.17.2.2 jdolecek */ 49 1.17.2.2 jdolecek 50 1.17.2.2 jdolecek #include <sys/param.h> 51 1.17.2.2 jdolecek #include <sys/reboot.h> 52 1.17.2.2 jdolecek 53 1.17.2.2 jdolecek #include <lib/libsa/stand.h> 54 1.17.2.2 jdolecek 55 1.17.2.2 jdolecek #include "loadfile.h" 56 1.17.2.2 jdolecek #include "libi386.h" 57 1.17.2.2 jdolecek #include "bootinfo.h" 58 1.17.2.2 jdolecek #ifdef SUPPORT_PS2 59 1.17.2.2 jdolecek #include "biosmca.h" 60 1.17.2.2 jdolecek #endif 61 1.17.2.2 jdolecek 62 1.17.2.2 jdolecek #define BOOT_NARGS 6 63 1.17.2.2 jdolecek 64 1.17.2.2 jdolecek extern struct btinfo_console btinfo_console; 65 1.17.2.2 jdolecek 66 1.17.2.2 jdolecek int 67 1.17.2.2 jdolecek exec_netbsd(file, loadaddr, boothowto) 68 1.17.2.2 jdolecek const char *file; 69 1.17.2.2 jdolecek physaddr_t loadaddr; 70 1.17.2.2 jdolecek int boothowto; 71 1.17.2.2 jdolecek { 72 1.17.2.2 jdolecek u_long boot_argv[BOOT_NARGS]; 73 1.17.2.2 jdolecek int fd; 74 1.17.2.2 jdolecek u_long marks[MARK_MAX]; 75 1.17.2.2 jdolecek struct btinfo_symtab btinfo_symtab; 76 1.17.2.2 jdolecek u_long extmem; 77 1.17.2.2 jdolecek u_long basemem; 78 1.17.2.2 jdolecek #ifdef XMS 79 1.17.2.2 jdolecek u_long xmsmem; 80 1.17.2.2 jdolecek physaddr_t origaddr = loadaddr; 81 1.17.2.2 jdolecek #endif 82 1.17.2.2 jdolecek 83 1.17.2.2 jdolecek #ifdef DEBUG 84 1.17.2.2 jdolecek printf("exec: file=%s loadaddr=0x%lx\n", 85 1.17.2.2 jdolecek file ? file : "NULL", loadaddr); 86 1.17.2.2 jdolecek #endif 87 1.17.2.2 jdolecek 88 1.17.2.2 jdolecek BI_ALLOC(6); /* ??? */ 89 1.17.2.2 jdolecek 90 1.17.2.2 jdolecek BI_ADD(&btinfo_console, BTINFO_CONSOLE, sizeof(struct btinfo_console)); 91 1.17.2.2 jdolecek 92 1.17.2.2 jdolecek extmem = getextmem(); 93 1.17.2.2 jdolecek basemem = getbasemem(); 94 1.17.2.2 jdolecek 95 1.17.2.2 jdolecek #ifdef XMS 96 1.17.2.2 jdolecek if ((getextmem1() == 0) && (xmsmem = checkxms())) { 97 1.17.2.2 jdolecek u_long kernsize; 98 1.17.2.2 jdolecek 99 1.17.2.2 jdolecek /* 100 1.17.2.2 jdolecek * With "CONSERVATIVE_MEMDETECT", extmem is 0 because 101 1.17.2.2 jdolecek * getextmem() is getextmem1(). Without, the "smart" 102 1.17.2.2 jdolecek * methods could fail to report all memory as well. 103 1.17.2.2 jdolecek * xmsmem is a few kB less than the actual size, but 104 1.17.2.2 jdolecek * better than nothing. 105 1.17.2.2 jdolecek */ 106 1.17.2.2 jdolecek if (xmsmem > extmem) 107 1.17.2.2 jdolecek extmem = xmsmem; 108 1.17.2.2 jdolecek /* 109 1.17.2.2 jdolecek * Get the size of the kernel 110 1.17.2.2 jdolecek */ 111 1.17.2.2 jdolecek marks[MARK_START] = loadaddr; 112 1.17.2.2 jdolecek if ((fd = loadfile(file, marks, COUNT_KERNEL)) == -1) 113 1.17.2.2 jdolecek goto out; 114 1.17.2.2 jdolecek close(fd); 115 1.17.2.2 jdolecek 116 1.17.2.2 jdolecek kernsize = marks[MARK_END]; 117 1.17.2.2 jdolecek kernsize = (kernsize + 1023) / 1024; 118 1.17.2.2 jdolecek 119 1.17.2.2 jdolecek loadaddr = xmsalloc(kernsize); 120 1.17.2.2 jdolecek if (!loadaddr) 121 1.17.2.2 jdolecek return(ENOMEM); 122 1.17.2.2 jdolecek } 123 1.17.2.2 jdolecek #endif 124 1.17.2.2 jdolecek marks[MARK_START] = loadaddr; 125 1.17.2.2 jdolecek if ((fd = loadfile(file, marks, LOAD_KERNEL)) == -1) 126 1.17.2.2 jdolecek goto out; 127 1.17.2.2 jdolecek 128 1.17.2.2 jdolecek boot_argv[0] = boothowto; 129 1.17.2.2 jdolecek boot_argv[1] = 0; 130 1.17.2.2 jdolecek boot_argv[2] = vtophys(bootinfo); /* old cyl offset */ 131 1.17.2.2 jdolecek /* argv[3] below */ 132 1.17.2.2 jdolecek boot_argv[4] = extmem; 133 1.17.2.2 jdolecek boot_argv[5] = basemem; 134 1.17.2.2 jdolecek 135 1.17.2.2 jdolecek close(fd); 136 1.17.2.2 jdolecek 137 1.17.2.2 jdolecek /* 138 1.17.2.2 jdolecek * Gather some information for the kernel. Do this after the 139 1.17.2.2 jdolecek * "point of no return" to avoid memory leaks. 140 1.17.2.2 jdolecek * (but before DOS might be trashed in the XMS case) 141 1.17.2.2 jdolecek */ 142 1.17.2.2 jdolecek #ifdef PASS_BIOSGEOM 143 1.17.2.2 jdolecek bi_getbiosgeom(); 144 1.17.2.2 jdolecek #endif 145 1.17.2.2 jdolecek #ifdef PASS_MEMMAP 146 1.17.2.2 jdolecek bi_getmemmap(); 147 1.17.2.2 jdolecek #endif 148 1.17.2.2 jdolecek 149 1.17.2.2 jdolecek #ifdef XMS 150 1.17.2.2 jdolecek if (loadaddr != origaddr) { 151 1.17.2.2 jdolecek /* 152 1.17.2.2 jdolecek * We now have done our last DOS IO, so we may 153 1.17.2.2 jdolecek * trash the OS. Copy the data from the temporary 154 1.17.2.2 jdolecek * buffer to its real adress. 155 1.17.2.2 jdolecek */ 156 1.17.2.2 jdolecek marks[MARK_START] -= loadaddr; 157 1.17.2.2 jdolecek marks[MARK_END] -= loadaddr; 158 1.17.2.2 jdolecek marks[MARK_SYM] -= loadaddr; 159 1.17.2.2 jdolecek marks[MARK_END] -= loadaddr; 160 1.17.2.2 jdolecek ppbcopy(loadaddr, origaddr, marks[MARK_END]); 161 1.17.2.2 jdolecek } 162 1.17.2.2 jdolecek #endif 163 1.17.2.2 jdolecek marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) & 164 1.17.2.2 jdolecek (-sizeof(int)); 165 1.17.2.2 jdolecek 166 1.17.2.2 jdolecek boot_argv[3] = marks[MARK_END]; 167 1.17.2.2 jdolecek 168 1.17.2.2 jdolecek 169 1.17.2.2 jdolecek #ifdef DEBUG 170 1.17.2.2 jdolecek printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 171 1.17.2.2 jdolecek marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 172 1.17.2.2 jdolecek #endif 173 1.17.2.2 jdolecek 174 1.17.2.2 jdolecek btinfo_symtab.nsym = marks[MARK_NSYM]; 175 1.17.2.2 jdolecek btinfo_symtab.ssym = marks[MARK_SYM]; 176 1.17.2.2 jdolecek btinfo_symtab.esym = marks[MARK_END]; 177 1.17.2.2 jdolecek BI_ADD(&btinfo_symtab, BTINFO_SYMTAB, sizeof(struct btinfo_symtab)); 178 1.17.2.2 jdolecek 179 1.17.2.2 jdolecek startprog(marks[MARK_ENTRY], BOOT_NARGS, boot_argv, 180 1.17.2.2 jdolecek i386_trunc_page(basemem*1024)); 181 1.17.2.2 jdolecek panic("exec returned"); 182 1.17.2.2 jdolecek 183 1.17.2.2 jdolecek out: 184 1.17.2.2 jdolecek BI_FREE(); 185 1.17.2.2 jdolecek bootinfo = 0; 186 1.17.2.2 jdolecek return (-1); 187 1.17.2.2 jdolecek } 188
Indexes created Fri Oct 03 02:09:57 GMT 2025