641 lines
16 KiB
C
641 lines
16 KiB
C
/* $NetBSD: loadfile.c,v 1.17 2001/07/31 22:11:57 bjh21 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 ? fname : "<default>"));
|
|
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(hdr.elf.e_ident, ELFMAG, SELFMAG) == 0 &&
|
|
hdr.elf.e_ident[EI_CLASS] == ELFCLASS) {
|
|
rval = elf_exec(fd, &hdr.elf, marks, flags);
|
|
} else
|
|
#endif
|
|
#ifdef BOOT_AOUT
|
|
if (OKMAGIC(N_GETMAGIC(hdr.aout))
|
|
#ifndef NO_MID_CHECK
|
|
&& N_GETMID(hdr.aout) == MID_MACHINE
|
|
#endif
|
|
) {
|
|
rval = aout_exec(fd, &hdr.aout, marks, flags);
|
|
} else
|
|
#endif
|
|
{
|
|
rval = 1;
|
|
errno = EFTYPE;
|
|
WARN(("%s", fname ? fname : "<default>"));
|
|
}
|
|
|
|
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;
|
|
int i, j;
|
|
size_t sz;
|
|
int first;
|
|
paddr_t minp = ~0, maxp = 0, pos = 0;
|
|
paddr_t offset = marks[MARK_START], shpp, elfp = NULL;
|
|
|
|
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 != PT_LOAD ||
|
|
(phdr.p_flags & (PF_W|PF_X)) == 0)
|
|
continue;
|
|
|
|
#define IS_TEXT(p) (p.p_flags & PF_X)
|
|
#define IS_DATA(p) (p.p_flags & PF_W)
|
|
#define IS_BSS(p) (p.p_filesz < p.p_memsz)
|
|
/*
|
|
* XXX: Assume first address is lowest
|
|
*/
|
|
if ((IS_TEXT(phdr) && (flags & LOAD_TEXT)) ||
|
|
(IS_DATA(phdr) && (flags & LOAD_DATA))) {
|
|
|
|
/* Read in segment. */
|
|
PROGRESS(("%s%lu", first ? "" : "+",
|
|
(u_long)phdr.p_filesz));
|
|
|
|
if (lseek(fd, phdr.p_offset, SEEK_SET) == -1) {
|
|
WARN(("lseek text"));
|
|
return 1;
|
|
}
|
|
if (READ(fd, phdr.p_vaddr, phdr.p_filesz) !=
|
|
phdr.p_filesz) {
|
|
WARN(("read text"));
|
|
return 1;
|
|
}
|
|
first = 0;
|
|
|
|
}
|
|
if ((IS_TEXT(phdr) && (flags & (LOAD_TEXT|COUNT_TEXT))) ||
|
|
(IS_DATA(phdr) && (flags & (LOAD_DATA|COUNT_TEXT)))) {
|
|
pos = phdr.p_vaddr;
|
|
if (minp > pos)
|
|
minp = pos;
|
|
pos += phdr.p_filesz;
|
|
if (maxp < pos)
|
|
maxp = pos;
|
|
}
|
|
|
|
/* Zero out bss. */
|
|
if (IS_BSS(phdr) && (flags & LOAD_BSS)) {
|
|
PROGRESS(("+%lu",
|
|
(u_long)(phdr.p_memsz - phdr.p_filesz)));
|
|
BZERO((phdr.p_vaddr + phdr.p_filesz),
|
|
phdr.p_memsz - phdr.p_filesz);
|
|
}
|
|
if (IS_BSS(phdr) && (flags & (LOAD_BSS|COUNT_BSS))) {
|
|
pos += phdr.p_memsz - phdr.p_filesz;
|
|
if (maxp < pos)
|
|
maxp = pos;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Copy the ELF and section headers.
|
|
*/
|
|
maxp = roundup(maxp, sizeof(long));
|
|
if (flags & (LOAD_HDR|COUNT_HDR)) {
|
|
elfp = maxp;
|
|
maxp += sizeof(Elf_Ehdr);
|
|
}
|
|
|
|
if (flags & (LOAD_SYM|COUNT_SYM)) {
|
|
if (lseek(fd, elf->e_shoff, SEEK_SET) == -1) {
|
|
WARN(("lseek section headers"));
|
|
return 1;
|
|
}
|
|
sz = elf->e_shnum * sizeof(Elf_Shdr);
|
|
|
|
shp = ALLOC(sz);
|
|
|
|
if (read(fd, shp, sz) != sz) {
|
|
WARN(("read section headers"));
|
|
return 1;
|
|
}
|
|
|
|
shpp = maxp;
|
|
maxp += roundup(sz, sizeof(long));
|
|
|
|
/*
|
|
* Now load the symbol sections themselves. Make sure
|
|
* the sections are aligned. Don't bother with any
|
|
* string table that isn't referenced by a symbol
|
|
* table.
|
|
*/
|
|
for (first = 1, i = 0; i < elf->e_shnum; i++) {
|
|
switch (shp[i].sh_type) {
|
|
case SHT_STRTAB:
|
|
for (j = 0; j < elf->e_shnum; j++)
|
|
if (shp[j].sh_type == SHT_SYMTAB &&
|
|
shp[j].sh_link == i)
|
|
goto havesym;
|
|
/* FALLTHROUGH */
|
|
default:
|
|
/* Not loading this, so zero out the offset. */
|
|
shp[i].sh_offset = 0;
|
|
break;
|
|
havesym:
|
|
case SHT_SYMTAB:
|
|
if (flags & LOAD_SYM) {
|
|
PROGRESS(("%s%ld", first ? " [" : "+",
|
|
(u_long)shp[i].sh_size));
|
|
if (lseek(fd, shp[i].sh_offset,
|
|
SEEK_SET) == -1) {
|
|
WARN(("lseek symbols"));
|
|
FREE(shp, sz);
|
|
return 1;
|
|
}
|
|
if (READ(fd, maxp, shp[i].sh_size) !=
|
|
shp[i].sh_size) {
|
|
WARN(("read symbols"));
|
|
FREE(shp, sz);
|
|
return 1;
|
|
}
|
|
}
|
|
shp[i].sh_offset = maxp - elfp;
|
|
maxp += roundup(shp[i].sh_size,
|
|
sizeof(long));
|
|
first = 0;
|
|
}
|
|
/* Since we don't load .shstrtab, zero the name. */
|
|
shp[i].sh_name = 0;
|
|
}
|
|
if (flags & LOAD_SYM) {
|
|
BCOPY(shp, shpp, sz);
|
|
|
|
if (first == 0)
|
|
PROGRESS(("]"));
|
|
}
|
|
FREE(shp, sz);
|
|
}
|
|
|
|
/*
|
|
* Frob the copied ELF header to give information relative
|
|
* to elfp.
|
|
*/
|
|
if (flags & LOAD_HDR) {
|
|
elf->e_phoff = 0;
|
|
elf->e_shoff = sizeof(Elf_Ehdr);
|
|
elf->e_phentsize = 0;
|
|
elf->e_phnum = 0;
|
|
elf->e_shstrndx = SHN_UNDEF;
|
|
BCOPY(elf, elfp, sizeof(*elf));
|
|
}
|
|
|
|
marks[MARK_START] = LOADADDR(minp);
|
|
marks[MARK_ENTRY] = LOADADDR(elf->e_entry);
|
|
/*
|
|
* Since there can be more than one symbol section in the code
|
|
* and we need to find strtab too in order to do anything
|
|
* useful with the symbols, we just pass the whole elf
|
|
* header back and we let the kernel debugger find the
|
|
* location and number of symbols by itself.
|
|
*/
|
|
marks[MARK_NSYM] = 1; /* XXX: Kernel needs >= 0 */
|
|
marks[MARK_SYM] = LOADADDR(elfp);
|
|
marks[MARK_END] = LOADADDR(maxp);
|
|
return 0;
|
|
}
|
|
#endif /* BOOT_ELF */
|
|
|
|
#ifdef BOOT_AOUT
|
|
static int
|
|
aout_exec(fd, x, marks, flags)
|
|
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;
|
|
|
|
/* 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));
|
|
|
|
if (READ(fd, maxp, x->a_text - sub) != x->a_text - sub) {
|
|
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 & (__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));
|
|
|
|
if (READ(fd, maxp, x->a_data) != x->a_data) {
|
|
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));
|
|
|
|
if (READ(fd, maxp, x->a_syms) != x->a_syms) {
|
|
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;
|
|
|
|
if (read(fd, &cc, sizeof(cc)) != sizeof(cc)) {
|
|
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) {
|
|
if (READ(fd, maxp, cc) != cc) {
|
|
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 */
|