exec.c revision 1.21
1 /* $NetBSD: exec.c,v 1.21 2005/06/21 18:16:59 junyoung Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)boot.c 8.1 (Berkeley) 6/10/93 32 */ 33 34 /* 35 * Copyright (c) 1996 36 * Matthias Drochner. All rights reserved. 37 * Copyright (c) 1996 38 * Perry E. Metzger. All rights reserved. 39 * Copyright (c) 1997 40 * Martin Husemann. All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)boot.c 8.1 (Berkeley) 6/10/93 71 */ 72 73 /* 74 * starts NetBSD a.out kernel 75 * needs lowlevel startup from startprog.S 76 * This is a special version of exec.c to support use of XMS. 77 */ 78 79 #include <sys/param.h> 80 #include <sys/reboot.h> 81 82 #include <lib/libsa/stand.h> 83 84 #include "loadfile.h" 85 #include "libi386.h" 86 #include "bootinfo.h" 87 #ifdef SUPPORT_PS2 88 #include "biosmca.h" 89 #endif 90 91 #define BOOT_NARGS 6 92 93 extern struct btinfo_console btinfo_console; 94 95 int 96 exec_netbsd(const char *file, physaddr_t loadaddr, int boothowto) 97 { 98 u_long boot_argv[BOOT_NARGS]; 99 int fd; 100 u_long marks[MARK_MAX]; 101 struct btinfo_symtab btinfo_symtab; 102 u_long extmem; 103 u_long basemem; 104 #ifdef XMS 105 u_long xmsmem; 106 physaddr_t origaddr = loadaddr; 107 #endif 108 109 #ifdef DEBUG 110 printf("exec: file=%s loadaddr=0x%lx\n", 111 file ? file : "NULL", loadaddr); 112 #endif 113 114 BI_ALLOC(6); /* ??? */ 115 116 BI_ADD(&btinfo_console, BTINFO_CONSOLE, sizeof(struct btinfo_console)); 117 118 extmem = getextmem(); 119 basemem = getbasemem(); 120 121 #ifdef XMS 122 if ((getextmem1() == 0) && (xmsmem = checkxms())) { 123 u_long kernsize; 124 125 /* 126 * With "CONSERVATIVE_MEMDETECT", extmem is 0 because 127 * getextmem() is getextmem1(). Without, the "smart" 128 * methods could fail to report all memory as well. 129 * xmsmem is a few kB less than the actual size, but 130 * better than nothing. 131 */ 132 if (xmsmem > extmem) 133 extmem = xmsmem; 134 /* 135 * Get the size of the kernel 136 */ 137 marks[MARK_START] = loadaddr; 138 if ((fd = loadfile(file, marks, COUNT_KERNEL)) == -1) 139 goto out; 140 close(fd); 141 142 kernsize = marks[MARK_END]; 143 kernsize = (kernsize + 1023) / 1024; 144 145 loadaddr = xmsalloc(kernsize); 146 if (!loadaddr) 147 return ENOMEM; 148 } 149 #endif 150 marks[MARK_START] = loadaddr; 151 if ((fd = loadfile(file, marks, LOAD_KERNEL)) == -1) 152 goto out; 153 154 boot_argv[0] = boothowto; 155 boot_argv[1] = 0; 156 boot_argv[2] = vtophys(bootinfo); /* old cyl offset */ 157 /* argv[3] below */ 158 boot_argv[4] = extmem; 159 boot_argv[5] = basemem; 160 161 close(fd); 162 163 /* 164 * Gather some information for the kernel. Do this after the 165 * "point of no return" to avoid memory leaks. 166 * (but before DOS might be trashed in the XMS case) 167 */ 168 #ifdef PASS_BIOSGEOM 169 bi_getbiosgeom(); 170 #endif 171 #ifdef PASS_MEMMAP 172 bi_getmemmap(); 173 #endif 174 175 #ifdef XMS 176 if (loadaddr != origaddr) { 177 /* 178 * We now have done our last DOS IO, so we may 179 * trash the OS. Copy the data from the temporary 180 * buffer to its real address. 181 */ 182 marks[MARK_START] -= loadaddr; 183 marks[MARK_END] -= loadaddr; 184 marks[MARK_SYM] -= loadaddr; 185 marks[MARK_END] -= loadaddr; 186 ppbcopy(loadaddr, origaddr, marks[MARK_END]); 187 } 188 #endif 189 marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) & 190 (-sizeof(int)); 191 192 boot_argv[3] = marks[MARK_END]; 193 194 195 #ifdef DEBUG 196 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 197 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 198 #endif 199 200 btinfo_symtab.nsym = marks[MARK_NSYM]; 201 btinfo_symtab.ssym = marks[MARK_SYM]; 202 btinfo_symtab.esym = marks[MARK_END]; 203 BI_ADD(&btinfo_symtab, BTINFO_SYMTAB, sizeof(struct btinfo_symtab)); 204 205 startprog(marks[MARK_ENTRY], BOOT_NARGS, boot_argv, 206 x86_trunc_page(basemem*1024)); 207 panic("exec returned"); 208 209 out: 210 BI_FREE(); 211 bootinfo = 0; 212 return -1; 213 } 214
Indexes created Mon Sep 22 21:09:42 GMT 2025