148 lines
3.9 KiB
C
148 lines
3.9 KiB
C
/* $NetBSD: loadfile_ecoff.c,v 1.12 2008/04/28 20:24:06 martin Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center and by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef _STANDALONE
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#include <lib/libsa/stand.h>
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#include <lib/libkern/libkern.h>
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#else
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <err.h>
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#endif
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#include <sys/param.h>
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#include <sys/exec.h>
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#include "loadfile.h"
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#ifdef BOOT_ECOFF
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int
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loadfile_coff(int fd, struct ecoff_exechdr *coff, u_long *marks, int flags)
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{
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paddr_t offset = marks[MARK_START];
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paddr_t minp = ~0, maxp = 0, pos;
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ssize_t nr;
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/* some ports dont use the offset */
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offset = offset;
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/* Read in text. */
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if (lseek(fd, ECOFF_TXTOFF(coff), SEEK_SET) == -1) {
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WARN(("lseek text"));
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return 1;
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}
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if (coff->a.tsize != 0) {
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if (flags & LOAD_TEXT) {
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PROGRESS(("%lu", coff->a.tsize));
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nr = READ(fd, coff->a.text_start, coff->a.tsize);
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if (nr == -1) {
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return 1;
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}
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if (nr != coff->a.tsize) {
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errno = EIO;
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return 1;
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}
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}
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else {
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if (lseek(fd, coff->a.tsize, SEEK_CUR) == -1) {
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WARN(("read text"));
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return 1;
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}
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}
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if (flags & (COUNT_TEXT|LOAD_TEXT)) {
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pos = coff->a.text_start;
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if (minp > pos)
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minp = pos;
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pos += coff->a.tsize;
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if (maxp < pos)
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maxp = pos;
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}
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}
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/* Read in data. */
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if (coff->a.dsize != 0) {
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if (flags & LOAD_DATA) {
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PROGRESS(("+%lu", coff->a.dsize));
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nr = READ(fd, coff->a.data_start, coff->a.dsize);
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if (nr == -1) {
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WARN(("read data"));
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return 1;
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}
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if (nr != coff->a.dsize) {
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errno = EIO;
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WARN(("read data"));
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return 1;
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}
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}
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if (flags & (COUNT_DATA|LOAD_DATA)) {
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pos = coff->a.data_start;
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if (minp > pos)
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minp = pos;
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pos += coff->a.dsize;
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if (maxp < pos)
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maxp = pos;
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}
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}
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/* Zero out bss. */
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if (coff->a.bsize != 0) {
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if (flags & LOAD_BSS) {
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PROGRESS(("+%lu", coff->a.bsize));
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BZERO(coff->a.bss_start, coff->a.bsize);
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}
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if (flags & (COUNT_BSS|LOAD_BSS)) {
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pos = coff->a.bss_start;
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if (minp > pos)
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minp = pos;
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pos = coff->a.bsize;
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if (maxp < pos)
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maxp = pos;
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}
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}
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marks[MARK_START] = LOADADDR(minp);
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marks[MARK_ENTRY] = LOADADDR(coff->a.entry);
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marks[MARK_NSYM] = 1; /* XXX: Kernel needs >= 0 */
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marks[MARK_SYM] = LOADADDR(maxp);
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marks[MARK_END] = LOADADDR(maxp);
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marks[MARK_DATA] = LOADADDR(coff->a.data_start);
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return 0;
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}
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#endif /* BOOT_ECOFF */
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