/* $NetBSD: loadfile_aout.c,v 1.15 2014/02/20 00:29:03 joerg Exp $ */ /*- * Copyright (c) 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center and by Christos Zoulas. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Ralph Campbell. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)boot.c 8.1 (Berkeley) 6/10/93 */ #ifdef _STANDALONE #include <lib/libsa/stand.h> #include <lib/libkern/libkern.h> #else #include <stdio.h> #include <string.h> #include <errno.h> #include <stdlib.h> #include <unistd.h> #include <fcntl.h> #include <err.h> #endif #include <sys/param.h> #include <sys/exec_aout.h> #include "loadfile.h" #ifdef BOOT_AOUT int loadfile_aout(int fd, struct exec *x, u_long *marks, int flags) { u_long entry = x->a_entry; paddr_t aoutp = 0; paddr_t minp, maxp; int cc; paddr_t offset = marks[MARK_START]; u_long magic = N_GETMAGIC(*x); int sub; ssize_t nr; /* some ports don't use the offset */ (void)offset; /* In OMAGIC and NMAGIC, exec header isn't part of text segment */ if (magic == OMAGIC || magic == NMAGIC) sub = 0; else sub = sizeof(*x); minp = maxp = ALIGNENTRY(entry); if (lseek(fd, sizeof(*x), SEEK_SET) == -1) { WARN(("lseek text")); return 1; } /* * Leave a copy of the exec header before the text. * The kernel may use this to verify that the * symbols were loaded by this boot program. */ if (magic == OMAGIC || magic == NMAGIC) { if (flags & LOAD_HDR && maxp >= sizeof(*x)) BCOPY(x, maxp - sizeof(*x), sizeof(*x)); } else { if (flags & LOAD_HDR) BCOPY(x, maxp, sizeof(*x)); if (flags & (LOAD_HDR|COUNT_HDR)) maxp += sizeof(*x); } /* * Read in the text segment. */ if (flags & LOAD_TEXT) { PROGRESS(("%ld", x->a_text)); nr = READ(fd, maxp, x->a_text - sub); if (nr == -1) { WARN(("read text")); return 1; } if (nr != (ssize_t)(x->a_text - sub)) { errno = EIO; WARN(("read text")); return 1; } } else { if (lseek(fd, x->a_text - sub, SEEK_CUR) == -1) { WARN(("seek text")); return 1; } } if (flags & (LOAD_TEXT|COUNT_TEXT)) maxp += x->a_text - sub; /* * Provide alignment if required */ if (magic == ZMAGIC || magic == NMAGIC) { int size = -(unsigned int)maxp & (AOUT_LDPGSZ - 1); if (flags & LOAD_TEXTA) { PROGRESS(("/%d", size)); BZERO(maxp, size); } if (flags & (LOAD_TEXTA|COUNT_TEXTA)) maxp += size; } /* * Read in the data segment. */ if (flags & LOAD_DATA) { PROGRESS(("+%ld", x->a_data)); marks[MARK_DATA] = LOADADDR(maxp); nr = READ(fd, maxp, x->a_data); if (nr == -1) { WARN(("read data")); return 1; } if (nr != (ssize_t)x->a_data) { errno = EIO; WARN(("read data")); return 1; } } else { if (lseek(fd, x->a_data, SEEK_CUR) == -1) { WARN(("seek data")); return 1; } } if (flags & (LOAD_DATA|COUNT_DATA)) maxp += x->a_data; /* * Zero out the BSS section. * (Kernel doesn't care, but do it anyway.) */ if (flags & LOAD_BSS) { PROGRESS(("+%ld", x->a_bss)); BZERO(maxp, x->a_bss); } if (flags & (LOAD_BSS|COUNT_BSS)) maxp += x->a_bss; /* * Read in the symbol table and strings. * (Always set the symtab size word.) */ if (flags & LOAD_SYM) BCOPY(&x->a_syms, maxp, sizeof(x->a_syms)); if (flags & (LOAD_SYM|COUNT_SYM)) { maxp += sizeof(x->a_syms); aoutp = maxp; } if (x->a_syms > 0) { /* Symbol table and string table length word. */ if (flags & LOAD_SYM) { PROGRESS(("+[%ld", x->a_syms)); nr = READ(fd, maxp, x->a_syms); if (nr == -1) { WARN(("read symbols")); return 1; } if (nr != (ssize_t)x->a_syms) { errno = EIO; WARN(("read symbols")); return 1; } } else { if (lseek(fd, x->a_syms, SEEK_CUR) == -1) { WARN(("seek symbols")); return 1; } } if (flags & (LOAD_SYM|COUNT_SYM)) maxp += x->a_syms; nr = read(fd, &cc, sizeof(cc)); if (nr == -1) { WARN(("read string table")); return 1; } if (nr != sizeof(cc)) { errno = EIO; WARN(("read string table")); return 1; } if (flags & LOAD_SYM) { BCOPY(&cc, maxp, sizeof(cc)); /* String table. Length word includes itself. */ PROGRESS(("+%d]", cc)); } if (flags & (LOAD_SYM|COUNT_SYM)) maxp += sizeof(cc); cc -= sizeof(int); if (cc <= 0) { WARN(("symbol table too short")); return 1; } if (flags & LOAD_SYM) { nr = READ(fd, maxp, cc); if (nr == -1) { WARN(("read strings")); return 1; } if (nr != cc) { errno = EIO; WARN(("read strings")); return 1; } } else { if (lseek(fd, cc, SEEK_CUR) == -1) { WARN(("seek strings")); return 1; } } if (flags & (LOAD_SYM|COUNT_SYM)) maxp += cc; } marks[MARK_START] = LOADADDR(minp); marks[MARK_ENTRY] = LOADADDR(entry); marks[MARK_NSYM] = x->a_syms; marks[MARK_SYM] = LOADADDR(aoutp); marks[MARK_END] = LOADADDR(maxp); return 0; } #endif /* BOOT_AOUT */
