1/*	$NetBSD: mopcopy.c,v 1.4 2009/08/20 22:26:19 he Exp $	*/
2
3/* mopcopy - Convert a Unix format kernel into something that
4 * can be transfered via MOP.
5 *
6 * This code was written while refering to the NetBSD/vax boot
7 * loader. Therefore anything that can be booted by the Vax
8 * should be convertable with this program.
9 *
10 * If necessary, the a.out header is stripped, and the program
11 * segments are padded out. The BSS segment is zero filled.
12 * A header is prepended that looks like an IHD header. In
13 * particular the Unix mahine ID is placed where mopd expects
14 * the image type to be (offset is IHD_W_ALIAS). If the machine
15 * ID could be mistaken for a DEC image type, then the conversion
16 * is aborted. The original a.out header is copied into the front
17 * of the header so that once we have detected the Unix machine
18 * ID we can haul the load address and the xfer address out.
19 */
20
21/*
22 * Copyright (c) 1996 Lloyd Parkes.  All rights reserved.
23 *
24 * Redistribution and use in source and binary forms, with or without
25 * modification, are permitted provided that the following conditions
26 * are met:
27 * 1. Redistributions of source code must retain the above copyright
28 *    notice, this list of conditions and the following disclaimer.
29 * 2. Redistributions in binary form must reproduce the above copyright
30 *    notice, this list of conditions and the following disclaimer in the
31 *    documentation and/or other materials provided with the distribution.
32 * 3. All advertising materials mentioning features or use of this software
33 *    must display the following acknowledgement:
34 *	This product includes software developed by Lloyd Parkes.
35 * 4. The name of the author may not be used to endorse or promote products
36 *    derived from this software without specific prior written permission.
37 *
38 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
39 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
40 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
41 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
42 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
43 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
44 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
45 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
46 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
47 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
48 */
49
50#include <sys/cdefs.h>
51#ifndef lint
52__RCSID("$NetBSD: mopcopy.c,v 1.4 2009/08/20 22:26:19 he Exp $");
53#endif
54
55#include "os.h"
56#include "common.h"
57#include "mopdef.h"
58#include "file.h"
59#if !defined(NOAOUT)
60#if defined(__NetBSD__) || defined(__OpenBSD__)
61#include <sys/exec_aout.h>
62#endif
63#if defined(__FreeBSD__)
64#include <sys/imgact_aout.h>
65#endif
66#endif /* !NOAOUT */
67#if defined(__bsdi__)
68#include <a.out.h>
69#define NOAOUT
70#endif
71#if !defined(MID_VAX)
72#define MID_VAX 140
73#endif
74
75#ifndef NOELF
76# if defined(__NetBSD__)
77#  include <sys/exec_elf.h>
78# else
79#  define NOELF
80# endif
81# if !defined(EM_VAX)
82#  define EM_VAX 75
83# endif
84#endif /* NOELF */
85
86u_char header[512];		/* The VAX header we generate is 1 block. */
87#if !defined(NOAOUT)
88struct exec ex, ex_swap;
89#endif
90
91int
92main(int argc, char **argv)
93{
94	FILE   *out;		/* A FILE because that is easier. */
95	int	i, j;
96	struct dllist dl;
97
98	if (argc != 3) {
99		fprintf (stderr, "usage: %s kernel-in sys-out\n",
100		    getprogname());
101		return (1);
102	}
103
104	dl.ldfd = open (argv[1], O_RDONLY);
105	if (dl.ldfd == -1)
106		err(2, "open `%s'", argv[1]);
107
108	if (GetFileInfo(&dl) == -1)
109		errx(3, "`%s' is an unknown file type", argv[1]);
110
111	switch (dl.image_type) {
112	case IMAGE_TYPE_MOP:
113		errx(3, "`%s' is already a MOP image", argv[1]);
114		break;
115
116#ifndef NOELF
117	case IMAGE_TYPE_ELF32:
118		if (dl.e_machine != EM_VAX)
119			printf("WARNING: `%s' is not a VAX image "
120			    "(machine=%d)\n", argv[1], dl.e_machine);
121		for (i = 0, j = 0; j < dl.e_nsec; j++)
122			i += dl.e_sections[j].s_fsize + dl.e_sections[j].s_pad;
123		break;
124#endif
125
126#ifndef NOAOUT
127	case IMAGE_TYPE_AOUT:
128		if (dl.a_mid != MID_VAX)
129			printf("WARNING: `%s' is not a VAX image (mid=%d)\n",
130			    argv[1], dl.a_mid);
131		i = dl.a_text + dl.a_text_fill + dl.a_data + dl.a_data_fill +
132		    dl.a_bss  + dl.a_bss_fill;
133		break;
134#endif
135
136	default:
137		errx(3, "Image type `%s' not supported",
138		    FileTypeName(dl.image_type));
139	}
140
141	i = (i+1) / 512;
142
143	dl.nloadaddr = dl.loadaddr;
144	dl.lseek     = lseek(dl.ldfd,0L,SEEK_CUR);
145	dl.a_lseek   = 0;
146	dl.count     = 0;
147	dl.dl_bsz    = 512;
148
149	mopFilePutLX(header,IHD_W_SIZE,0xd4,2);   /* Offset to ISD section. */
150	mopFilePutLX(header,IHD_W_ACTIVOFF,0x30,2);/* Offset to 1st section.*/
151	mopFilePutLX(header,IHD_W_ALIAS,IHD_C_NATIVE,2);/* It's a VAX image.*/
152	mopFilePutLX(header,IHD_B_HDRBLKCNT,1,1); /* Only one header block. */
153	mopFilePutLX(header,0xd4+ISD_V_VPN,dl.loadaddr/512,2);/* load Addr */
154	mopFilePutLX(header,0x30+IHA_L_TFRADR1,dl.xferaddr,4); /* Xfer Addr */
155	mopFilePutLX(header,0xd4+ISD_W_PAGCNT,i,2);/* Imagesize in blks.*/
156
157	out = fopen (argv[2], "w");
158	if (!out)
159		err(2, "writing `%s'", argv[2]);
160
161	/* Now we do the actual work. Write VAX MOP-image header */
162
163	fwrite (header, sizeof (header), 1, out);
164
165	switch (dl.image_type) {
166	case IMAGE_TYPE_MOP:
167		abort();
168
169	case IMAGE_TYPE_ELF32:
170#ifdef NOELF
171		abort();
172#else
173		fprintf(stderr, "copying ");
174		for (j = 0; j < dl.e_nsec; j++)
175			fprintf(stderr, "%s%u+%u", j == 0 ? "" : "+",
176			    dl.e_sections[j].s_fsize,
177			    dl.e_sections[j].s_pad);
178		fprintf(stderr, "->0x%x\n", dl.xferaddr);
179#endif
180		break;
181
182	case IMAGE_TYPE_AOUT:
183#ifdef NOAOUT
184		abort();
185#else
186		fprintf(stderr, "copying %u+%u+%u->0x%x\n", dl.a_text,
187		    dl.a_data, dl.a_bss, dl.xferaddr);
188#endif
189		break;
190	}
191
192	while ((i = mopFileRead(&dl,header)) > 0) {
193		(void)fwrite(header, i, 1, out);
194	}
195
196	fclose (out);
197	return (0);
198}
199