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ce1663765c
moved to ELF. Move the a.out specific defines and macros, but the MID_xxx values, from <sys/exec.h> to <a.out.h>, and update the few userland binaries which really need these defines (i.e. boot-related tools for old architectures) to explicitly include <a.out.h> when needed. "Fine" deraadt@
240 lines
6.7 KiB
C
240 lines
6.7 KiB
C
/* $OpenBSD: mopa.out.c,v 1.19 2024/10/16 18:47:48 miod 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 convertible 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 <a.out.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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}
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