loadfile_aout.c revision 1.2.2.2
1 1.2.2.2 thorpej /* $NetBSD: loadfile_aout.c,v 1.2.2.2 2001/11/12 21:19:05 thorpej Exp $ */ 2 1.2.2.2 thorpej 3 1.2.2.2 thorpej /*- 4 1.2.2.2 thorpej * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 1.2.2.2 thorpej * All rights reserved. 6 1.2.2.2 thorpej * 7 1.2.2.2 thorpej * This code is derived from software contributed to The NetBSD Foundation 8 1.2.2.2 thorpej * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 1.2.2.2 thorpej * NASA Ames Research Center and by Christos Zoulas. 10 1.2.2.2 thorpej * 11 1.2.2.2 thorpej * Redistribution and use in source and binary forms, with or without 12 1.2.2.2 thorpej * modification, are permitted provided that the following conditions 13 1.2.2.2 thorpej * are met: 14 1.2.2.2 thorpej * 1. Redistributions of source code must retain the above copyright 15 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer. 16 1.2.2.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 17 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer in the 18 1.2.2.2 thorpej * documentation and/or other materials provided with the distribution. 19 1.2.2.2 thorpej * 3. All advertising materials mentioning features or use of this software 20 1.2.2.2 thorpej * must display the following acknowledgement: 21 1.2.2.2 thorpej * This product includes software developed by the NetBSD 22 1.2.2.2 thorpej * Foundation, Inc. and its contributors. 23 1.2.2.2 thorpej * 4. Neither the name of The NetBSD Foundation nor the names of its 24 1.2.2.2 thorpej * contributors may be used to endorse or promote products derived 25 1.2.2.2 thorpej * from this software without specific prior written permission. 26 1.2.2.2 thorpej * 27 1.2.2.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 1.2.2.2 thorpej * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 1.2.2.2 thorpej * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 1.2.2.2 thorpej * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 1.2.2.2 thorpej * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 1.2.2.2 thorpej * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 1.2.2.2 thorpej * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 1.2.2.2 thorpej * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 1.2.2.2 thorpej * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 1.2.2.2 thorpej * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 1.2.2.2 thorpej * POSSIBILITY OF SUCH DAMAGE. 38 1.2.2.2 thorpej */ 39 1.2.2.2 thorpej 40 1.2.2.2 thorpej /* 41 1.2.2.2 thorpej * Copyright (c) 1992, 1993 42 1.2.2.2 thorpej * The Regents of the University of California. All rights reserved. 43 1.2.2.2 thorpej * 44 1.2.2.2 thorpej * This code is derived from software contributed to Berkeley by 45 1.2.2.2 thorpej * Ralph Campbell. 46 1.2.2.2 thorpej * 47 1.2.2.2 thorpej * Redistribution and use in source and binary forms, with or without 48 1.2.2.2 thorpej * modification, are permitted provided that the following conditions 49 1.2.2.2 thorpej * are met: 50 1.2.2.2 thorpej * 1. Redistributions of source code must retain the above copyright 51 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer. 52 1.2.2.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 53 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer in the 54 1.2.2.2 thorpej * documentation and/or other materials provided with the distribution. 55 1.2.2.2 thorpej * 3. All advertising materials mentioning features or use of this software 56 1.2.2.2 thorpej * must display the following acknowledgement: 57 1.2.2.2 thorpej * This product includes software developed by the University of 58 1.2.2.2 thorpej * California, Berkeley and its contributors. 59 1.2.2.2 thorpej * 4. Neither the name of the University nor the names of its contributors 60 1.2.2.2 thorpej * may be used to endorse or promote products derived from this software 61 1.2.2.2 thorpej * without specific prior written permission. 62 1.2.2.2 thorpej * 63 1.2.2.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 64 1.2.2.2 thorpej * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 65 1.2.2.2 thorpej * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 66 1.2.2.2 thorpej * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 67 1.2.2.2 thorpej * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 68 1.2.2.2 thorpej * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 69 1.2.2.2 thorpej * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 70 1.2.2.2 thorpej * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 71 1.2.2.2 thorpej * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 72 1.2.2.2 thorpej * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 73 1.2.2.2 thorpej * SUCH DAMAGE. 74 1.2.2.2 thorpej * 75 1.2.2.2 thorpej * @(#)boot.c 8.1 (Berkeley) 6/10/93 76 1.2.2.2 thorpej */ 77 1.2.2.2 thorpej 78 1.2.2.2 thorpej #ifdef _STANDALONE 79 1.2.2.2 thorpej #include <lib/libsa/stand.h> 80 1.2.2.2 thorpej #include <lib/libkern/libkern.h> 81 1.2.2.2 thorpej #else 82 1.2.2.2 thorpej #include <stdio.h> 83 1.2.2.2 thorpej #include <string.h> 84 1.2.2.2 thorpej #include <errno.h> 85 1.2.2.2 thorpej #include <stdlib.h> 86 1.2.2.2 thorpej #include <unistd.h> 87 1.2.2.2 thorpej #include <fcntl.h> 88 1.2.2.2 thorpej #include <err.h> 89 1.2.2.2 thorpej #endif 90 1.2.2.2 thorpej 91 1.2.2.2 thorpej #include <sys/param.h> 92 1.2.2.2 thorpej #include <sys/exec.h> 93 1.2.2.2 thorpej 94 1.2.2.2 thorpej #include "loadfile.h" 95 1.2.2.2 thorpej 96 1.2.2.2 thorpej #ifdef BOOT_AOUT 97 1.2.2.2 thorpej 98 1.2.2.2 thorpej int 99 1.2.2.2 thorpej loadfile_aout(fd, x, marks, flags) 100 1.2.2.2 thorpej int fd; 101 1.2.2.2 thorpej struct exec *x; 102 1.2.2.2 thorpej u_long *marks; 103 1.2.2.2 thorpej int flags; 104 1.2.2.2 thorpej { 105 1.2.2.2 thorpej u_long entry = x->a_entry; 106 1.2.2.2 thorpej paddr_t aoutp = 0; 107 1.2.2.2 thorpej paddr_t minp, maxp; 108 1.2.2.2 thorpej int cc; 109 1.2.2.2 thorpej paddr_t offset = marks[MARK_START]; 110 1.2.2.2 thorpej u_long magic = N_GETMAGIC(*x); 111 1.2.2.2 thorpej int sub; 112 1.2.2.2 thorpej 113 1.2.2.2 thorpej /* In OMAGIC and NMAGIC, exec header isn't part of text segment */ 114 1.2.2.2 thorpej if (magic == OMAGIC || magic == NMAGIC) 115 1.2.2.2 thorpej sub = 0; 116 1.2.2.2 thorpej else 117 1.2.2.2 thorpej sub = sizeof(*x); 118 1.2.2.2 thorpej 119 1.2.2.2 thorpej minp = maxp = ALIGNENTRY(entry); 120 1.2.2.2 thorpej 121 1.2.2.2 thorpej if (lseek(fd, sizeof(*x), SEEK_SET) == -1) { 122 1.2.2.2 thorpej WARN(("lseek text")); 123 1.2.2.2 thorpej return 1; 124 1.2.2.2 thorpej } 125 1.2.2.2 thorpej 126 1.2.2.2 thorpej /* 127 1.2.2.2 thorpej * Leave a copy of the exec header before the text. 128 1.2.2.2 thorpej * The kernel may use this to verify that the 129 1.2.2.2 thorpej * symbols were loaded by this boot program. 130 1.2.2.2 thorpej */ 131 1.2.2.2 thorpej if (magic == OMAGIC || magic == NMAGIC) { 132 1.2.2.2 thorpej if (flags & LOAD_HDR && maxp >= sizeof(*x)) 133 1.2.2.2 thorpej BCOPY(x, maxp - sizeof(*x), sizeof(*x)); 134 1.2.2.2 thorpej } 135 1.2.2.2 thorpej else { 136 1.2.2.2 thorpej if (flags & LOAD_HDR) 137 1.2.2.2 thorpej BCOPY(x, maxp, sizeof(*x)); 138 1.2.2.2 thorpej if (flags & (LOAD_HDR|COUNT_HDR)) 139 1.2.2.2 thorpej maxp += sizeof(*x); 140 1.2.2.2 thorpej } 141 1.2.2.2 thorpej 142 1.2.2.2 thorpej /* 143 1.2.2.2 thorpej * Read in the text segment. 144 1.2.2.2 thorpej */ 145 1.2.2.2 thorpej if (flags & LOAD_TEXT) { 146 1.2.2.2 thorpej PROGRESS(("%ld", x->a_text)); 147 1.2.2.2 thorpej 148 1.2.2.2 thorpej if (READ(fd, maxp, x->a_text - sub) != x->a_text - sub) { 149 1.2.2.2 thorpej WARN(("read text")); 150 1.2.2.2 thorpej return 1; 151 1.2.2.2 thorpej } 152 1.2.2.2 thorpej } else { 153 1.2.2.2 thorpej if (lseek(fd, x->a_text - sub, SEEK_CUR) == -1) { 154 1.2.2.2 thorpej WARN(("seek text")); 155 1.2.2.2 thorpej return 1; 156 1.2.2.2 thorpej } 157 1.2.2.2 thorpej } 158 1.2.2.2 thorpej if (flags & (LOAD_TEXT|COUNT_TEXT)) 159 1.2.2.2 thorpej maxp += x->a_text - sub; 160 1.2.2.2 thorpej 161 1.2.2.2 thorpej /* 162 1.2.2.2 thorpej * Provide alignment if required 163 1.2.2.2 thorpej */ 164 1.2.2.2 thorpej if (magic == ZMAGIC || magic == NMAGIC) { 165 1.2.2.2 thorpej int size = -(unsigned int)maxp & (__LDPGSZ - 1); 166 1.2.2.2 thorpej 167 1.2.2.2 thorpej if (flags & LOAD_TEXTA) { 168 1.2.2.2 thorpej PROGRESS(("/%d", size)); 169 1.2.2.2 thorpej BZERO(maxp, size); 170 1.2.2.2 thorpej } 171 1.2.2.2 thorpej 172 1.2.2.2 thorpej if (flags & (LOAD_TEXTA|COUNT_TEXTA)) 173 1.2.2.2 thorpej maxp += size; 174 1.2.2.2 thorpej } 175 1.2.2.2 thorpej 176 1.2.2.2 thorpej /* 177 1.2.2.2 thorpej * Read in the data segment. 178 1.2.2.2 thorpej */ 179 1.2.2.2 thorpej if (flags & LOAD_DATA) { 180 1.2.2.2 thorpej PROGRESS(("+%ld", x->a_data)); 181 1.2.2.2 thorpej 182 1.2.2.2 thorpej if (READ(fd, maxp, x->a_data) != x->a_data) { 183 1.2.2.2 thorpej WARN(("read data")); 184 1.2.2.2 thorpej return 1; 185 1.2.2.2 thorpej } 186 1.2.2.2 thorpej } 187 1.2.2.2 thorpej else { 188 1.2.2.2 thorpej if (lseek(fd, x->a_data, SEEK_CUR) == -1) { 189 1.2.2.2 thorpej WARN(("seek data")); 190 1.2.2.2 thorpej return 1; 191 1.2.2.2 thorpej } 192 1.2.2.2 thorpej } 193 1.2.2.2 thorpej if (flags & (LOAD_DATA|COUNT_DATA)) 194 1.2.2.2 thorpej maxp += x->a_data; 195 1.2.2.2 thorpej 196 1.2.2.2 thorpej /* 197 1.2.2.2 thorpej * Zero out the BSS section. 198 1.2.2.2 thorpej * (Kernel doesn't care, but do it anyway.) 199 1.2.2.2 thorpej */ 200 1.2.2.2 thorpej if (flags & LOAD_BSS) { 201 1.2.2.2 thorpej PROGRESS(("+%ld", x->a_bss)); 202 1.2.2.2 thorpej 203 1.2.2.2 thorpej BZERO(maxp, x->a_bss); 204 1.2.2.2 thorpej } 205 1.2.2.2 thorpej 206 1.2.2.2 thorpej if (flags & (LOAD_BSS|COUNT_BSS)) 207 1.2.2.2 thorpej maxp += x->a_bss; 208 1.2.2.2 thorpej 209 1.2.2.2 thorpej /* 210 1.2.2.2 thorpej * Read in the symbol table and strings. 211 1.2.2.2 thorpej * (Always set the symtab size word.) 212 1.2.2.2 thorpej */ 213 1.2.2.2 thorpej if (flags & LOAD_SYM) 214 1.2.2.2 thorpej BCOPY(&x->a_syms, maxp, sizeof(x->a_syms)); 215 1.2.2.2 thorpej 216 1.2.2.2 thorpej if (flags & (LOAD_SYM|COUNT_SYM)) { 217 1.2.2.2 thorpej maxp += sizeof(x->a_syms); 218 1.2.2.2 thorpej aoutp = maxp; 219 1.2.2.2 thorpej } 220 1.2.2.2 thorpej 221 1.2.2.2 thorpej if (x->a_syms > 0) { 222 1.2.2.2 thorpej /* Symbol table and string table length word. */ 223 1.2.2.2 thorpej 224 1.2.2.2 thorpej if (flags & LOAD_SYM) { 225 1.2.2.2 thorpej PROGRESS(("+[%ld", x->a_syms)); 226 1.2.2.2 thorpej 227 1.2.2.2 thorpej if (READ(fd, maxp, x->a_syms) != x->a_syms) { 228 1.2.2.2 thorpej WARN(("read symbols")); 229 1.2.2.2 thorpej return 1; 230 1.2.2.2 thorpej } 231 1.2.2.2 thorpej } else { 232 1.2.2.2 thorpej if (lseek(fd, x->a_syms, SEEK_CUR) == -1) { 233 1.2.2.2 thorpej WARN(("seek symbols")); 234 1.2.2.2 thorpej return 1; 235 1.2.2.2 thorpej } 236 1.2.2.2 thorpej } 237 1.2.2.2 thorpej if (flags & (LOAD_SYM|COUNT_SYM)) 238 1.2.2.2 thorpej maxp += x->a_syms; 239 1.2.2.2 thorpej 240 1.2.2.2 thorpej if (read(fd, &cc, sizeof(cc)) != sizeof(cc)) { 241 1.2.2.2 thorpej WARN(("read string table")); 242 1.2.2.2 thorpej return 1; 243 1.2.2.2 thorpej } 244 1.2.2.2 thorpej 245 1.2.2.2 thorpej if (flags & LOAD_SYM) { 246 1.2.2.2 thorpej BCOPY(&cc, maxp, sizeof(cc)); 247 1.2.2.2 thorpej 248 1.2.2.2 thorpej /* String table. Length word includes itself. */ 249 1.2.2.2 thorpej 250 1.2.2.2 thorpej PROGRESS(("+%d]", cc)); 251 1.2.2.2 thorpej } 252 1.2.2.2 thorpej if (flags & (LOAD_SYM|COUNT_SYM)) 253 1.2.2.2 thorpej maxp += sizeof(cc); 254 1.2.2.2 thorpej 255 1.2.2.2 thorpej cc -= sizeof(int); 256 1.2.2.2 thorpej if (cc <= 0) { 257 1.2.2.2 thorpej WARN(("symbol table too short")); 258 1.2.2.2 thorpej return 1; 259 1.2.2.2 thorpej } 260 1.2.2.2 thorpej 261 1.2.2.2 thorpej if (flags & LOAD_SYM) { 262 1.2.2.2 thorpej if (READ(fd, maxp, cc) != cc) { 263 1.2.2.2 thorpej WARN(("read strings")); 264 1.2.2.2 thorpej return 1; 265 1.2.2.2 thorpej } 266 1.2.2.2 thorpej } else { 267 1.2.2.2 thorpej if (lseek(fd, cc, SEEK_CUR) == -1) { 268 1.2.2.2 thorpej WARN(("seek strings")); 269 1.2.2.2 thorpej return 1; 270 1.2.2.2 thorpej } 271 1.2.2.2 thorpej } 272 1.2.2.2 thorpej if (flags & (LOAD_SYM|COUNT_SYM)) 273 1.2.2.2 thorpej maxp += cc; 274 1.2.2.2 thorpej } 275 1.2.2.2 thorpej 276 1.2.2.2 thorpej marks[MARK_START] = LOADADDR(minp); 277 1.2.2.2 thorpej marks[MARK_ENTRY] = LOADADDR(entry); 278 1.2.2.2 thorpej marks[MARK_NSYM] = x->a_syms; 279 1.2.2.2 thorpej marks[MARK_SYM] = LOADADDR(aoutp); 280 1.2.2.2 thorpej marks[MARK_END] = LOADADDR(maxp); 281 1.2.2.2 thorpej return 0; 282 1.2.2.2 thorpej } 283 1.2.2.2 thorpej 284 1.2.2.2 thorpej #endif /* BOOT_AOUT */ 285
Indexes created Wed Oct 01 18:09:54 GMT 2025