1 /* $OpenBSD: mopa.out.c,v 1.13 2013/10/17 08:02:21 deraadt Exp $ */ 2 3 /* mopa.out - Convert a Unix format kernel into something that 4 * can be transferred via MOP. 5 * 6 * This code was written while referring 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 machine 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 "os.h" 51 #include "common/common.h" 52 #include "common/mopdef.h" 53 #include "common/file.h" 54 #if defined(__OpenBSD__) 55 #include <sys/exec.h> 56 #endif 57 #if defined(__FreeBSD__) 58 #include <sys/imgact_aout.h> 59 #endif 60 #if defined(__bsdi__) 61 #include <a.out.h> 62 #define NOAOUT 63 #endif 64 #if !defined(MID_VAX) 65 #define MID_VAX 140 66 #endif 67 68 #ifndef NOELF 69 #if defined(__NetBSD__) || defined(__OpenBSD__) 70 #include <sys/exec_elf.h> 71 #else 72 #define NOELF 73 #endif 74 #if !defined(EM_VAX) 75 #define EM_VAX 75 76 #endif 77 #endif 78 79 u_char header[512]; /* The VAX header we generate is 1 block. */ 80 #if !defined(NOAOUT) 81 struct exec ex, ex_swap; 82 #endif 83 84 int 85 main (int argc, char **argv) 86 { 87 FILE *out; /* A FILE because that is easier. */ 88 int i, j; 89 struct dllist dl; 90 91 #ifdef NOAOUT 92 fprintf(stderr, "%s: has no function in OS/BSD\n", argv[0]); 93 return(1); 94 #endif 95 96 if (argc != 3) { 97 fprintf (stderr, "usage: %s infile outfile\n", argv[0]); 98 return (1); 99 } 100 101 dl.ldfd = open (argv[1], O_RDONLY); 102 if (dl.ldfd == -1) 103 err(2, "open `%s'", argv[1]); 104 105 if (GetFileInfo(&dl, 0) == -1) 106 errx(3, "`%s' is an unknown file type", argv[1]); 107 108 switch (dl.image_type) { 109 case IMAGE_TYPE_MOP: 110 errx(3, "`%s' is already a MOP image", argv[1]); 111 break; 112 113 #ifndef NOELF 114 case IMAGE_TYPE_ELF32: 115 if (dl.e_machine != EM_VAX) 116 printf("WARNING: `%s' is not a VAX image " 117 "(machine=%d)\n", argv[1], dl.e_machine); 118 for (i = 0, j = 0; j < dl.e_nsec; j++) 119 i += dl.e_sections[j].s_fsize + dl.e_sections[j].s_pad; 120 break; 121 #endif 122 123 #ifndef NOAOUT 124 case IMAGE_TYPE_AOUT: 125 if (dl.a_mid != MID_VAX) 126 printf("WARNING: `%s' is not a VAX image (mid=%d)\n", 127 argv[1], dl.a_mid); 128 i = dl.a_text + dl.a_text_fill + dl.a_data + dl.a_data_fill + 129 dl.a_bss + dl.a_bss_fill; 130 break; 131 #endif 132 133 default: 134 errx(3, "Image type `%s' not supported", 135 FileTypeName(dl.image_type)); 136 } 137 138 i = (i+1) / 512; 139 140 dl.nloadaddr = dl.loadaddr; 141 dl.lseek = lseek(dl.ldfd,0L,SEEK_CUR); 142 dl.a_lseek = 0; 143 dl.count = 0; 144 dl.dl_bsz = 512; 145 146 mopFilePutLX(header,IHD_W_SIZE,0xd4,2); /* Offset to ISD section. */ 147 mopFilePutLX(header,IHD_W_ACTIVOFF,0x30,2);/* Offset to 1st section.*/ 148 mopFilePutLX(header,IHD_W_ALIAS,IHD_C_NATIVE,2);/* It's a VAX image.*/ 149 mopFilePutLX(header,IHD_B_HDRBLKCNT,1,1); /* Only one header block. */ 150 mopFilePutLX(header,0xd4+ISD_V_VPN,dl.loadaddr/512,2);/* load Addr */ 151 mopFilePutLX(header,0x30+IHA_L_TFRADR1,dl.xferaddr,4); /* Xfer Addr */ 152 mopFilePutLX(header,0xd4+ISD_W_PAGCNT,i,2);/* Imagesize in blks.*/ 153 154 out = fopen (argv[2], "w"); 155 if (!out) 156 err(2, "writing `%s'", argv[2]); 157 158 /* Now we do the actual work. Write VAX MOP-image header */ 159 160 fwrite (header, sizeof (header), 1, out); 161 162 switch (dl.image_type) { 163 case IMAGE_TYPE_MOP: 164 abort(); 165 166 case IMAGE_TYPE_ELF32: 167 #ifdef NOELF 168 abort(); 169 #else 170 fprintf(stderr, "copying "); 171 for (j = 0; j < dl.e_nsec; j++) 172 fprintf(stderr, "%s%u+%u", j == 0 ? "" : "+", 173 dl.e_sections[j].s_fsize, 174 dl.e_sections[j].s_pad); 175 fprintf(stderr, "->0x%x\n", dl.xferaddr); 176 #endif 177 break; 178 179 case IMAGE_TYPE_AOUT: 180 #ifdef NOAOUT 181 abort(); 182 #else 183 fprintf(stderr, "copying %u+%u+%u->0x%x\n", dl.a_text, 184 dl.a_data, dl.a_bss, dl.xferaddr); 185 #endif 186 break; 187 } 188 189 while ((i = mopFileRead(&dl,header)) > 0) { 190 (void)fwrite(header, i, 1, out); 191 } 192 193 fclose (out); 194 exit(0); 195 } 196