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[src/trunk]: src/sys/arch/pmax/stand/lib Direct copy of sys/arch/i386/stand/l...
details: https://anonhg.NetBSD.org/src/rev/1346ff3f90cd
branches: trunk
changeset: 467446:1346ff3f90cd
user: simonb <simonb%NetBSD.org@localhost>
date: Wed Mar 24 23:51:26 1999 +0000
description:
Direct copy of sys/arch/i386/stand/lib/loadfile.c.
XXX: This should probably be MI in sys/lib/libsa. After 1.4...
diffstat:
sys/arch/pmax/stand/lib/loadfile.c | 602 +++++++++++++++++++++++++++++++++++++
1 files changed, 602 insertions(+), 0 deletions(-)
diffs (truncated from 606 to 300 lines):
diff -r aa1b1b16436b -r 1346ff3f90cd sys/arch/pmax/stand/lib/loadfile.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/pmax/stand/lib/loadfile.c Wed Mar 24 23:51:26 1999 +0000
@@ -0,0 +1,602 @@
+/* $NetBSD: loadfile.c,v 1.1 1999/03/24 23:51:26 simonb 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the NetBSD
+ * Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation 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 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. 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.h>
+
+#include "loadfile.h"
+
+#ifdef BOOT_ECOFF
+#include <sys/exec_ecoff.h>
+static int coff_exec __P((int, struct ecoff_exechdr *, u_long *, int));
+#endif
+#ifdef BOOT_ELF
+#include <sys/exec_elf.h>
+static int elf_exec __P((int, Elf_Ehdr *, u_long *, int));
+#endif
+#ifdef BOOT_AOUT
+#include <sys/exec_aout.h>
+static int aout_exec __P((int, struct exec *, u_long *, int));
+#endif
+
+/*
+ * Open 'filename', read in program and and return 0 if ok 1 on error.
+ * Fill in marks
+ */
+int
+loadfile(fname, marks, flags)
+ const char *fname;
+ u_long *marks;
+ int flags;
+{
+ union {
+#ifdef BOOT_ECOFF
+ struct ecoff_exechdr coff;
+#endif
+#ifdef BOOT_ELF
+ Elf_Ehdr elf;
+#endif
+#ifdef BOOT_AOUT
+ struct exec aout;
+#endif
+
+ } hdr;
+ ssize_t nr;
+ int fd, rval;
+
+ /* Open the file. */
+ if ((fd = open(fname, 0)) < 0) {
+ WARN(("open %s", fname));
+ return -1;
+ }
+
+ /* Read the exec header. */
+ if ((nr = read(fd, &hdr, sizeof(hdr))) != sizeof(hdr)) {
+ WARN(("read header"));
+ goto err;
+ }
+
+#ifdef BOOT_ECOFF
+ if (!ECOFF_BADMAG(&hdr.coff)) {
+ rval = coff_exec(fd, &hdr.coff, marks, flags);
+ } else
+#endif
+#ifdef BOOT_ELF
+ if (memcmp(Elf_e_ident, hdr.elf.e_ident, Elf_e_siz) == 0) {
+ rval = elf_exec(fd, &hdr.elf, marks, flags);
+ } else
+#endif
+#ifdef BOOT_AOUT
+ if (OKMAGIC(N_GETMAGIC(hdr.aout)) &&
+ N_GETMID(hdr.aout) == MID_MACHINE) {
+ rval = aout_exec(fd, &hdr.aout, marks, flags);
+ } else
+#endif
+ {
+ rval = 1;
+ errno = EFTYPE;
+ WARN(("%s", fname));
+ }
+
+ if (rval == 0)
+ PROGRESS(("=0x%lx\n", marks[MARK_END] - marks[MARK_START]));
+ return fd;
+err:
+ (void)close(fd);
+ return -1;
+}
+
+#ifdef BOOT_ECOFF
+static int
+coff_exec(fd, coff, marks, flags)
+ int fd;
+ struct ecoff_exechdr *coff;
+ u_long *marks;
+ int flags;
+{
+ paddr_t offset = marks[MARK_START];
+ paddr_t minp = ~0, maxp = 0, pos;
+
+ /* Read in text. */
+ if (lseek(fd, ECOFF_TXTOFF(coff), SEEK_SET) == -1) {
+ WARN(("lseek text"));
+ return 1;
+ }
+
+ if (coff->a.tsize != 0) {
+ if (flags & LOAD_TEXT) {
+ PROGRESS(("%lu", coff->a.tsize));
+ if (READ(fd, coff->a.text_start, coff->a.tsize) !=
+ coff->a.tsize) {
+ return 1;
+ }
+ }
+ else {
+ if (lseek(fd, coff->a.tsize, SEEK_CUR) == -1) {
+ WARN(("read text"));
+ return 1;
+ }
+ }
+ if (flags & (COUNT_TEXT|LOAD_TEXT)) {
+ pos = coff->a.text_start;
+ if (minp > pos)
+ minp = pos;
+ pos += coff->a.tsize;
+ if (maxp < pos)
+ maxp = pos;
+ }
+ }
+
+ /* Read in data. */
+ if (coff->a.dsize != 0) {
+ if (flags & LOAD_DATA) {
+ PROGRESS(("+%lu", coff->a.dsize));
+ if (READ(fd, coff->a.data_start, coff->a.dsize) !=
+ coff->a.dsize) {
+ WARN(("read data"));
+ return 1;
+ }
+ }
+ if (flags & (COUNT_DATA|LOAD_DATA)) {
+ pos = coff->a.data_start;
+ if (minp > pos)
+ minp = pos;
+ pos += coff->a.dsize;
+ if (maxp < pos)
+ maxp = pos;
+ }
+ }
+
+ /* Zero out bss. */
+ if (coff->a.bsize != 0) {
+ if (flags & LOAD_BSS) {
+ PROGRESS(("+%lu", coff->a.bsize));
+ BZERO(coff->a.bss_start, coff->a.bsize);
+ }
+ if (flags & (COUNT_BSS|LOAD_BSS)) {
+ pos = coff->a.bss_start;
+ if (minp > pos)
+ minp = pos;
+ pos = coff->a.bsize;
+ if (maxp < pos)
+ maxp = pos;
+ }
+ }
+
+ marks[MARK_START] = LOADADDR(minp);
+ marks[MARK_ENTRY] = LOADADDR(coff->a.entry);
+ marks[MARK_NSYM] = 1; /* XXX: Kernel needs >= 0 */
+ marks[MARK_SYM] = LOADADDR(maxp);
+ marks[MARK_END] = LOADADDR(maxp);
+ return 0;
+}
+#endif /* BOOT_ECOFF */
+
+#ifdef BOOT_ELF
+static int
+elf_exec(fd, elf, marks, flags)
+ int fd;
+ Elf_Ehdr *elf;
+ u_long *marks;
+ int flags;
+{
+ Elf_Shdr *shp;
+ Elf_Off off;
+ int i;
+ size_t sz;
+ int first;
+ int havesyms;
+ paddr_t minp = ~0, maxp = 0, pos;
+ paddr_t offset = marks[MARK_START], shpp, elfp;
+
+ for (first = 1, i = 0; i < elf->e_phnum; i++) {
+ Elf_Phdr phdr;
+ if (lseek(fd, elf->e_phoff + sizeof(phdr) * i, SEEK_SET)
+ == -1) {
+ WARN(("lseek phdr"));
+ return 1;
+ }
+ if (read(fd, (void *)&phdr, sizeof(phdr)) != sizeof(phdr)) {
+ WARN(("read phdr"));
+ return 1;
+ }
+ if (phdr.p_type != Elf_pt_load ||
+ (phdr.p_flags & (Elf_pf_w|Elf_pf_x)) == 0)
+ continue;
+
+#define IS_TEXT(p) (p.p_type & Elf_pf_x)
+#define IS_DATA(p) (p.p_type & Elf_pf_w)
+#define IS_BSS(p) (p.p_filesz < p.p_memsz)
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