GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/mopd/mopa.out/mopa.out.c Lines: 0 71 0.0 %
Date: 2017-11-13 Branches: 0 35 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: mopa.out.c,v 1.17 2017/10/29 08:45:53 mpi Exp $ */
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/*
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 * mopa.out - Convert a Unix format kernel into something that
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 * can be transferred via MOP.
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 *
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 * This code was written while referring to the NetBSD/vax boot
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 * loader. Therefore anything that can be booted by the Vax
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 * should be convertable with this program.
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 *
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 * If necessary, the a.out header is stripped, and the program
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 * segments are padded out. The BSS segment is zero filled.
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 * A header is prepended that looks like an IHD header. In
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 * particular the Unix machine ID is placed where mopd expects
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 * the image type to be (offset is IHD_W_ALIAS). If the machine
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 * ID could be mistaken for a DEC image type, then the conversion
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 * is aborted. The original a.out header is copied into the front
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 * of the header so that once we have detected the Unix machine
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 * ID we can haul the load address and the xfer address out.
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 */
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/*
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 * Copyright (c) 1996 Lloyd Parkes.  All rights reserved.
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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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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *	This product includes software developed by Lloyd Parkes.
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 * 4. The name of the author may not be used to endorse or promote products
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 *    derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include "os.h"
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#include "common/common.h"
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#include "common/mopdef.h"
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#include "common/file.h"
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#if defined(__OpenBSD__)
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#include <sys/exec.h>
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#endif
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#if defined(__FreeBSD__)
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#include <sys/imgact_aout.h>
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#endif
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#if defined(__bsdi__)
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#include <a.out.h>
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#define NOAOUT
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#endif
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#if !defined(MID_VAX)
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#define MID_VAX 140
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#endif
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#ifndef NOELF
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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#include <elf.h>
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#else
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#define NOELF
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#endif
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#endif
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#ifndef NOELF
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#if !defined(_LP64)
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#define NOELF64
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#endif
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#endif
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u_char header[512];		/* The MOP header we generate is 1 block. */
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#if !defined(NOAOUT)
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struct exec ex, ex_swap;
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#endif
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int
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main (int argc, char **argv)
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{
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	FILE   *out;		/* A FILE because that is easier. */
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	int	i, j;
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	struct dllist dl;
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	short image_type;
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#ifdef NOAOUT
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	fprintf(stderr, "%s: has no function in OS/BSD\n", argv[0]);
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	return(1);
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#endif
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	if (argc != 3) {
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		fprintf (stderr, "usage: %s infile outfile\n", argv[0]);
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		return (1);
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	}
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	dl.ldfd = open (argv[1], O_RDONLY);
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	if (dl.ldfd == -1)
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		err(2, "open `%s'", argv[1]);
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	if (GetFileInfo(&dl, 0) == -1)
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		errx(3, "`%s' is an unknown file type", argv[1]);
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	switch (dl.image_type) {
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	case IMAGE_TYPE_MOP:
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		errx(3, "`%s' is already a MOP image", argv[1]);
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		break;
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#ifndef NOELF
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	case IMAGE_TYPE_ELF32:
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		if (dl.e_machine != EM_VAX)
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			printf("WARNING: `%s' is not a VAX image "
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			    "(machine=%d)\n", argv[1], dl.e_machine);
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		for (i = 0, j = 0; j < dl.e_nsec; j++)
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			i += dl.e_sections[j].s_fsize + dl.e_sections[j].s_pad;
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		image_type = IHD_C_NATIVE;
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		break;
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#endif
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#if !defined(NOELF) && !defined(NOELF64)
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	case IMAGE_TYPE_ELF64:
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		if (dl.e_machine != EM_ALPHA && dl.e_machine != EM_ALPHA_EXP)
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			printf("WARNING: `%s' is not an ALPHA image "
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			    "(machine=%d)\n", argv[1], dl.e_machine);
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		for (i = 0, j = 0; j < dl.e_nsec; j++)
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			i += dl.e_sections[j].s_fsize + dl.e_sections[j].s_pad;
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		image_type = IHD_C_ALPHA;
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		break;
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#endif
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#ifndef NOAOUT
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	case IMAGE_TYPE_AOUT:
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		if (dl.a_mid != MID_VAX)
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			printf("WARNING: `%s' is not a VAX image (mid=%d)\n",
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			    argv[1], dl.a_mid);
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		i = dl.a_text + dl.a_text_fill + dl.a_data + dl.a_data_fill +
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		    dl.a_bss  + dl.a_bss_fill;
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		image_type = IHD_C_NATIVE;
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		break;
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#endif
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	default:
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		errx(3, "Image type `%s' not supported",
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		    FileTypeName(dl.image_type));
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	}
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	dl.nloadaddr = dl.loadaddr;
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	dl.lseek     = lseek(dl.ldfd,0L,SEEK_CUR);
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	dl.a_lseek   = 0;
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	dl.count     = 0;
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	dl.dl_bsz    = 512;
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	switch (image_type) {
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	default:
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	case IHD_C_NATIVE:
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		/* Offset to ISD section. */
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		mopFilePutLX(header, IHD_W_SIZE, 0xd4, 2);
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		/* Offset to 1st section.*/
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		mopFilePutLX(header, IHD_W_ACTIVOFF, 0x30, 2);
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		/* It's a VAX image.*/
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		mopFilePutLX(header, IHD_W_ALIAS, IHD_C_NATIVE, 2);
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		/* Only one header block. */
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		mopFilePutLX(header, IHD_B_HDRBLKCNT, 1, 1);
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		/* Xfer Addr */
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		mopFilePutLX(header, 0x30 + IHA_L_TFRADR1, dl.xferaddr, 4);
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		/* load Addr */
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		mopFilePutLX(header, 0xd4 + ISD_V_VPN, dl.loadaddr / 512, 2);
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		/* Imagesize in blks.*/
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		i = (i + 1) / 512;
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		mopFilePutLX(header, 0xd4 + ISD_W_PAGCNT, i, 2);
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		break;
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	case IHD_C_ALPHA:
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		/* Offset to ISD section. */
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		mopFilePutLX(header, EIHD_L_ISDOFF, 0xd4, 4);
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		/* It's an alpha image.*/
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		mopFilePutLX(header, IHD_W_ALIAS, IHD_C_ALPHA, 2);
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		/* Only one header block. */
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		mopFilePutLX(header, EIHD_L_HDRBLKCNT, 1, 4);
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		/* Imagesize in bytes.*/
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		mopFilePutLX(header, 0xd4 + EISD_L_SECSIZE, i, 4);
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		break;
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	}
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	out = fopen (argv[2], "w");
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	if (!out)
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		err(2, "writing `%s'", argv[2]);
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	/* Now we do the actual work. Write MOP-image header */
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	fwrite (header, sizeof (header), 1, out);
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	switch (dl.image_type) {
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	case IMAGE_TYPE_MOP:
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		abort();
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	case IMAGE_TYPE_ELF32:
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#ifdef NOELF
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		abort();
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#else
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		fprintf(stderr, "copying ");
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		for (j = 0; j < dl.e_nsec; j++)
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			fprintf(stderr, "%s%u+%u", j == 0 ? "" : "+",
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			    dl.e_sections[j].s_fsize,
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			    dl.e_sections[j].s_pad);
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		fprintf(stderr, "->0x%x\n", dl.xferaddr);
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#endif
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		break;
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	case IMAGE_TYPE_AOUT:
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#ifdef NOAOUT
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		abort();
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#else
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		fprintf(stderr, "copying %u+%u+%u->0x%x\n", dl.a_text,
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		    dl.a_data, dl.a_bss, dl.xferaddr);
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#endif
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		break;
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	default:
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		break;
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	}
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	while ((i = mopFileRead(&dl,header)) > 0) {
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		(void)fwrite(header, i, 1, out);
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	}
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	fclose (out);
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	exit(0);
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}