1 /* $NetBSD: mopcopy.c,v 1.6 2016/06/08 01:16:35 christos 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 "port.h" 51 #ifndef lint 52 __RCSID("$NetBSD: mopcopy.c,v 1.6 2016/06/08 01:16:35 christos 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 86 u_char header[512]; /* The VAX header we generate is 1 block. */ 87 #if !defined(NOAOUT) 88 struct exec ex, ex_swap; 89 #endif 90 91 int 92 main(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