180 lines
4.9 KiB
C
180 lines
4.9 KiB
C
/* $NetBSD: aout.c,v 1.9 2005/12/11 12:17:00 christos Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Leo Weppelman.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
|
|
#ifdef TOSTOOLS
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <a_out.h>
|
|
|
|
#define MALLOC(x) malloc(x)
|
|
|
|
#else
|
|
|
|
#include <lib/libsa/stand.h>
|
|
#include <atari_stand.h>
|
|
#include <string.h>
|
|
#include <libkern.h>
|
|
#include <sys/exec_aout.h>
|
|
|
|
#define MALLOC(x) alloc(x)
|
|
#endif
|
|
|
|
#include "libtos.h"
|
|
#include "kparamb.h"
|
|
#include "tosdefs.h"
|
|
#include "cread.h"
|
|
|
|
|
|
#ifdef TOSTOOLS
|
|
/*
|
|
* Assume compiling under TOS or MINT. The page-size will always
|
|
* be incorrect then (if it is defined anyway).
|
|
*/
|
|
#ifdef AOUT_LDPGSZ
|
|
#undef AOUT_LDPGSZ
|
|
#endif
|
|
|
|
#define AOUT_LDPGSZ (8*1024) /* Page size for NetBSD */
|
|
|
|
#endif /* TOSTOOLS */
|
|
|
|
/*
|
|
* Load an a.out image.
|
|
* Exit codes:
|
|
* -1 : Not an a.outfile
|
|
* 0 : OK
|
|
* error# : Error during load (*errp might contain error string).
|
|
*/
|
|
int
|
|
aout_load(int fd, osdsc_t *od, char **errp, int loadsyms)
|
|
{
|
|
long textsz, stringsz;
|
|
struct exec ehdr;
|
|
int err;
|
|
|
|
*errp = NULL;
|
|
|
|
lseek(fd, (off_t)0, SEEK_SET);
|
|
if (read(fd, (char *)&ehdr, sizeof(ehdr)) != sizeof(ehdr))
|
|
return -1;
|
|
|
|
#ifdef TOSTOOLS
|
|
if ((ehdr.a_magic & 0xffff) != NMAGIC)
|
|
return -1;
|
|
#else
|
|
if ((N_GETMAGIC(ehdr) != NMAGIC) && (N_GETMAGIC(ehdr) != OMAGIC))
|
|
return -1;
|
|
#endif
|
|
|
|
/*
|
|
* Extract various sizes from the kernel executable
|
|
*/
|
|
textsz = (ehdr.a_text + AOUT_LDPGSZ - 1) & ~(AOUT_LDPGSZ - 1);
|
|
od->k_esym = 0;
|
|
od->ksize = textsz + ehdr.a_data + ehdr.a_bss;
|
|
od->kentry = ehdr.a_entry;
|
|
|
|
if (loadsyms && ehdr.a_syms) {
|
|
err = 1;
|
|
if (lseek(fd, ehdr.a_text+ehdr.a_data+ehdr.a_syms+sizeof(ehdr),
|
|
0) <= 0)
|
|
goto error;
|
|
err = 2;
|
|
if (read(fd, (char *)&stringsz, sizeof(long)) != sizeof(long))
|
|
goto error;
|
|
err = 3;
|
|
if (lseek(fd, sizeof(ehdr), 0) <= 0)
|
|
goto error;
|
|
od->ksize += ehdr.a_syms + sizeof(long) + stringsz;
|
|
}
|
|
|
|
err = 4;
|
|
if ((od->kstart = (u_char *)MALLOC(od->ksize)) == NULL)
|
|
goto error;
|
|
|
|
/*
|
|
* Read text & data, clear bss
|
|
*/
|
|
err = 5;
|
|
if ((read(fd, (char *)(od->kstart), ehdr.a_text) != ehdr.a_text)
|
|
||(read(fd,(char *)(od->kstart+textsz),ehdr.a_data) != ehdr.a_data))
|
|
goto error;
|
|
bzero(od->kstart + textsz + ehdr.a_data, ehdr.a_bss);
|
|
|
|
/*
|
|
* Read symbol and string table
|
|
*/
|
|
if (loadsyms && ehdr.a_syms) {
|
|
long *p;
|
|
|
|
p = (long *)((od->kstart) + textsz + ehdr.a_data + ehdr.a_bss);
|
|
*p++ = ehdr.a_syms;
|
|
err = 6;
|
|
if (read(fd, (char *)p, ehdr.a_syms) != ehdr.a_syms)
|
|
goto error;
|
|
p = (long *)((char *)p + ehdr.a_syms);
|
|
err = 7;
|
|
if (read(fd, (char *)p, stringsz) != stringsz)
|
|
goto error;
|
|
od->k_esym = (long)((char *)p-(char *)od->kstart +stringsz);
|
|
}
|
|
return 0;
|
|
|
|
error:
|
|
#ifdef TOSTOOLS
|
|
{
|
|
static char *errs[] = {
|
|
/* 1 */ "Cannot seek to string table",
|
|
/* 2 */ "Cannot read string-table size",
|
|
/* 3 */ "Cannot seek back to text start",
|
|
/* 4 */ "Cannot malloc kernel image space",
|
|
/* 5 */ "Unable to read kernel image",
|
|
/* 6 */ "Cannot read symbol table",
|
|
/* 7 */ "Cannot read string table"
|
|
};
|
|
*errp = errs[err];
|
|
}
|
|
#endif /* TOSTOOLS */
|
|
|
|
return err;
|
|
}
|