loadfile_aout.c revision 1.5
1 /* $NetBSD: loadfile_aout.c,v 1.5 2003/08/07 16:32:28 agc Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center and by Christos Zoulas. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1992, 1993 42 * The Regents of the University of California. All rights reserved. 43 * 44 * This code is derived from software contributed to Berkeley by 45 * Ralph Campbell. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)boot.c 8.1 (Berkeley) 6/10/93 72 */ 73 74 #ifdef _STANDALONE 75 #include <lib/libsa/stand.h> 76 #include <lib/libkern/libkern.h> 77 #else 78 #include <stdio.h> 79 #include <string.h> 80 #include <errno.h> 81 #include <stdlib.h> 82 #include <unistd.h> 83 #include <fcntl.h> 84 #include <err.h> 85 #endif 86 87 #include <sys/param.h> 88 #include <sys/exec.h> 89 90 #include "loadfile.h" 91 92 #ifdef BOOT_AOUT 93 94 int 95 loadfile_aout(fd, x, marks, flags) 96 int fd; 97 struct exec *x; 98 u_long *marks; 99 int flags; 100 { 101 u_long entry = x->a_entry; 102 paddr_t aoutp = 0; 103 paddr_t minp, maxp; 104 int cc; 105 paddr_t offset = marks[MARK_START]; 106 u_long magic = N_GETMAGIC(*x); 107 int sub; 108 109 /* some ports dont use the offset */ 110 offset = offset; 111 112 /* In OMAGIC and NMAGIC, exec header isn't part of text segment */ 113 if (magic == OMAGIC || magic == NMAGIC) 114 sub = 0; 115 else 116 sub = sizeof(*x); 117 118 minp = maxp = ALIGNENTRY(entry); 119 120 if (lseek(fd, sizeof(*x), SEEK_SET) == -1) { 121 WARN(("lseek text")); 122 return 1; 123 } 124 125 /* 126 * Leave a copy of the exec header before the text. 127 * The kernel may use this to verify that the 128 * symbols were loaded by this boot program. 129 */ 130 if (magic == OMAGIC || magic == NMAGIC) { 131 if (flags & LOAD_HDR && maxp >= sizeof(*x)) 132 BCOPY(x, maxp - sizeof(*x), sizeof(*x)); 133 } 134 else { 135 if (flags & LOAD_HDR) 136 BCOPY(x, maxp, sizeof(*x)); 137 if (flags & (LOAD_HDR|COUNT_HDR)) 138 maxp += sizeof(*x); 139 } 140 141 /* 142 * Read in the text segment. 143 */ 144 if (flags & LOAD_TEXT) { 145 PROGRESS(("%ld", x->a_text)); 146 147 if (READ(fd, maxp, x->a_text - sub) != x->a_text - sub) { 148 WARN(("read text")); 149 return 1; 150 } 151 } else { 152 if (lseek(fd, x->a_text - sub, SEEK_CUR) == -1) { 153 WARN(("seek text")); 154 return 1; 155 } 156 } 157 if (flags & (LOAD_TEXT|COUNT_TEXT)) 158 maxp += x->a_text - sub; 159 160 /* 161 * Provide alignment if required 162 */ 163 if (magic == ZMAGIC || magic == NMAGIC) { 164 int size = -(unsigned int)maxp & (AOUT_LDPGSZ - 1); 165 166 if (flags & LOAD_TEXTA) { 167 PROGRESS(("/%d", size)); 168 BZERO(maxp, size); 169 } 170 171 if (flags & (LOAD_TEXTA|COUNT_TEXTA)) 172 maxp += size; 173 } 174 175 /* 176 * Read in the data segment. 177 */ 178 if (flags & LOAD_DATA) { 179 PROGRESS(("+%ld", x->a_data)); 180 181 if (READ(fd, maxp, x->a_data) != x->a_data) { 182 WARN(("read data")); 183 return 1; 184 } 185 } 186 else { 187 if (lseek(fd, x->a_data, SEEK_CUR) == -1) { 188 WARN(("seek data")); 189 return 1; 190 } 191 } 192 if (flags & (LOAD_DATA|COUNT_DATA)) 193 maxp += x->a_data; 194 195 /* 196 * Zero out the BSS section. 197 * (Kernel doesn't care, but do it anyway.) 198 */ 199 if (flags & LOAD_BSS) { 200 PROGRESS(("+%ld", x->a_bss)); 201 202 BZERO(maxp, x->a_bss); 203 } 204 205 if (flags & (LOAD_BSS|COUNT_BSS)) 206 maxp += x->a_bss; 207 208 /* 209 * Read in the symbol table and strings. 210 * (Always set the symtab size word.) 211 */ 212 if (flags & LOAD_SYM) 213 BCOPY(&x->a_syms, maxp, sizeof(x->a_syms)); 214 215 if (flags & (LOAD_SYM|COUNT_SYM)) { 216 maxp += sizeof(x->a_syms); 217 aoutp = maxp; 218 } 219 220 if (x->a_syms > 0) { 221 /* Symbol table and string table length word. */ 222 223 if (flags & LOAD_SYM) { 224 PROGRESS(("+[%ld", x->a_syms)); 225 226 if (READ(fd, maxp, x->a_syms) != x->a_syms) { 227 WARN(("read symbols")); 228 return 1; 229 } 230 } else { 231 if (lseek(fd, x->a_syms, SEEK_CUR) == -1) { 232 WARN(("seek symbols")); 233 return 1; 234 } 235 } 236 if (flags & (LOAD_SYM|COUNT_SYM)) 237 maxp += x->a_syms; 238 239 if (read(fd, &cc, sizeof(cc)) != sizeof(cc)) { 240 WARN(("read string table")); 241 return 1; 242 } 243 244 if (flags & LOAD_SYM) { 245 BCOPY(&cc, maxp, sizeof(cc)); 246 247 /* String table. Length word includes itself. */ 248 249 PROGRESS(("+%d]", cc)); 250 } 251 if (flags & (LOAD_SYM|COUNT_SYM)) 252 maxp += sizeof(cc); 253 254 cc -= sizeof(int); 255 if (cc <= 0) { 256 WARN(("symbol table too short")); 257 return 1; 258 } 259 260 if (flags & LOAD_SYM) { 261 if (READ(fd, maxp, cc) != cc) { 262 WARN(("read strings")); 263 return 1; 264 } 265 } else { 266 if (lseek(fd, cc, SEEK_CUR) == -1) { 267 WARN(("seek strings")); 268 return 1; 269 } 270 } 271 if (flags & (LOAD_SYM|COUNT_SYM)) 272 maxp += cc; 273 } 274 275 marks[MARK_START] = LOADADDR(minp); 276 marks[MARK_ENTRY] = LOADADDR(entry); 277 marks[MARK_NSYM] = x->a_syms; 278 marks[MARK_SYM] = LOADADDR(aoutp); 279 marks[MARK_END] = LOADADDR(maxp); 280 return 0; 281 } 282 283 #endif /* BOOT_AOUT */ 284
Indexes created Wed Oct 01 13:09:50 GMT 2025