src/util/zbin.c

   1 #include <stdio.h>
   2 #include <sys/stat.h>
   3
   4 #define ENCODE
   5 #define VERBOSE
   6 #include "nrv2b.c"
   7 FILE *infile, *outfile;
   8
   9 #define DEBUG 0
  10
  11 struct input_file {
  12         void *buf;
  13         size_t len;
  14 };
  15
  16 struct output_file {
  17         void *buf;
  18         size_t len;
  19         size_t hdr_len;
  20         size_t max_len;
  21 };
  22
  23 struct zinfo_common {
  24         char type[4];
  25         char pad[12];
  26 };
  27
  28 struct zinfo_copy {
  29         char type[4];
  30         uint32_t offset;
  31         uint32_t len;
  32         uint32_t align;
  33 };
  34
  35 struct zinfo_pack {
  36         char type[4];
  37         uint32_t offset;
  38         uint32_t len;
  39         uint32_t align;
  40 };
  41
  42 struct zinfo_payload {
  43         char type[4];
  44         uint32_t pad1;
  45         uint32_t pad2;
  46         uint32_t align;
  47 };
  48
  49 struct zinfo_add {
  50         char type[4];
  51         uint32_t offset;
  52         uint32_t divisor;
  53         uint32_t pad;
  54 };
  55
  56 union zinfo_record {
  57         struct zinfo_common common;
  58         struct zinfo_copy copy;
  59         struct zinfo_pack pack;
  60         struct zinfo_payload payload;
  61         struct zinfo_add add;
  62 };
  63
  64 struct zinfo_file {
  65         union zinfo_record *zinfo;
  66         unsigned int num_entries;
  67 };
  68
  69 static unsigned long align ( unsigned long value, unsigned long align ) {
  70         return ( ( value + align - 1 ) & ~( align - 1 ) );
  71 }
  72
  73 static int read_file ( const char *filename, void **buf, size_t *len ) {
  74         FILE *file;
  75         struct stat stat;
  76
  77         file = fopen ( filename, "r" );
  78         if ( ! file ) {
  79                 fprintf ( stderr, "Could not open %s: %s\n", filename,
  80                           strerror ( errno ) );
  81                 goto err;
  82         }
  83
  84         if ( fstat ( fileno ( file ), &stat ) < 0 ) {
  85                 fprintf ( stderr, "Could not stat %s: %s\n", filename,
  86                           strerror ( errno ) );
  87                 goto err;
  88         }
  89
  90         *len = stat.st_size;
  91         *buf = malloc ( *len );
  92         if ( ! *buf ) {
  93                 fprintf ( stderr, "Could not malloc() %zd bytes for %s: %s\n",
  94                           *len, filename, strerror ( errno ) );
  95                 goto err;
  96         }
  97
  98         if ( fread ( *buf, 1, *len, file ) != *len ) {
  99                 fprintf ( stderr, "Could not read %zd bytes from %s: %s\n",
 100                           *len, filename, strerror ( errno ) );
 101                 goto err;
 102         }
 103
 104         fclose ( file );
 105         return 0;
 106
 107  err:
 108         if ( file )
 109                 fclose ( file );
 110         return -1;
 111 }
 112
 113 static int read_input_file ( const char *filename,
 114                              struct input_file *input ) {
 115         return read_file ( filename, &input->buf, &input->len );
 116 }
 117
 118 static int read_zinfo_file ( const char *filename,
 119                              struct zinfo_file *zinfo ) {
 120         void *buf;
 121         size_t len;
 122
 123         if ( read_file ( filename, &buf, &len ) < 0 )
 124                 return -1;
 125
 126         if ( ( len % sizeof ( *(zinfo->zinfo) ) ) != 0 ) {
 127                 fprintf ( stderr, ".zinfo file %s has invalid length %zd\n",
 128                           filename, len );
 129                 return -1;
 130         }
 131
 132         zinfo->zinfo = buf;
 133         zinfo->num_entries = ( len / sizeof ( *(zinfo->zinfo) ) );
 134         return 0;
 135 }
 136
 137 static int alloc_output_file ( size_t max_len, struct output_file *output ) {
 138         output->len = 0;
 139         output->max_len = ( max_len );
 140         output->buf = malloc ( max_len );
 141         if ( ! output->buf ) {
 142                 fprintf ( stderr, "Could not allocate %zd bytes for output\n",
 143                           max_len );
 144                 return -1;
 145         }
 146         memset ( output->buf, 0xff, sizeof ( output->buf ) );
 147         return 0;
 148 }
 149
 150 static int process_zinfo_copy ( struct input_file *input,
 151                                 struct output_file *output,
 152                                 union zinfo_record *zinfo ) {
 153         struct zinfo_copy *copy = &zinfo->copy;
 154         size_t offset = copy->offset;
 155         size_t len = copy->len;
 156
 157         if ( ( offset + len ) > input->len ) {
 158                 fprintf ( stderr, "Input buffer overrun on copy\n" );
 159                 return -1;
 160         }
 161
 162         output->len = align ( output->len, copy->align );
 163         if ( ( output->len + len ) > output->max_len ) {
 164                 fprintf ( stderr, "Output buffer overrun on copy\n" );
 165                 return -1;
 166         }
 167
 168         if ( DEBUG ) {
 169                 fprintf ( stderr, "COPY [%#zx,%#zx) to [%#zx,%#zx)\n",
 170                           offset, ( offset + len ), output->len,
 171                           ( output->len + len ) );
 172         }
 173
 174         memcpy ( ( output->buf + output->len ),
 175                  ( input->buf + offset ), len );
 176         output->len += len;
 177         return 0;
 178 }
 179
 180 static int process_zinfo_pack ( struct input_file *input,
 181                                 struct output_file *output,
 182                                 union zinfo_record *zinfo ) {
 183         struct zinfo_pack *pack = &zinfo->pack;
 184         size_t offset = pack->offset;
 185         size_t len = pack->len;
 186         unsigned long packed_len;
 187
 188         if ( ( offset + len ) > input->len ) {
 189                 fprintf ( stderr, "Input buffer overrun on pack\n" );
 190                 return -1;
 191         }
 192
 193         output->len = align ( output->len, pack->align );
 194         if ( output->len > output->max_len ) {
 195                 fprintf ( stderr, "Output buffer overrun on pack\n" );
 196                 return -1;
 197         }
 198
 199         if ( ucl_nrv2b_99_compress ( ( input->buf + offset ), len,
 200                                      ( output->buf + output->len ),
 201                                      &packed_len, 0 ) != UCL_E_OK ) {
 202                 fprintf ( stderr, "Compression failure\n" );
 203                 return -1;
 204         }
 205
 206         if ( DEBUG ) {
 207                 fprintf ( stderr, "PACK [%#zx,%#zx) to [%#zx,%#zx)\n",
 208                           offset, ( offset + len ), output->len,
 209                           ( size_t )( output->len + packed_len ) );
 210         }
 211
 212         output->len += packed_len;
 213         if ( output->len > output->max_len ) {
 214                 fprintf ( stderr, "Output buffer overrun on pack\n" );
 215                 return -1;
 216         }
 217
 218         return 0;
 219 }
 220
 221 static int process_zinfo_payl ( struct input_file *input,
 222                                 struct output_file *output,
 223                                 union zinfo_record *zinfo ) {
 224         struct zinfo_payload *payload = &zinfo->payload;
 225
 226         output->len = align ( output->len, payload->align );
 227         output->hdr_len = output->len;
 228
 229         if ( DEBUG ) {
 230                 fprintf ( stderr, "PAYL at %#zx\n", output->hdr_len );
 231         }
 232 }
 233
 234 static int process_zinfo_add ( struct input_file *input,
 235                                struct output_file *output,
 236                                size_t len,
 237                                struct zinfo_add *add,
 238                                size_t datasize ) {
 239         size_t offset = add->offset;
 240         void *target;
 241         signed long addend;
 242         unsigned long size;
 243         signed long val;
 244         unsigned long mask;
 245
 246         if ( ( offset + datasize ) > output->len ) {
 247                 fprintf ( stderr, "Add at %#zx outside output buffer\n",
 248                           offset );
 249                 return -1;
 250         }
 251
 252         target = ( output->buf + offset );
 253         size = ( align ( len, add->divisor ) / add->divisor );
 254
 255         switch ( datasize ) {
 256         case 1:
 257                 addend = *( ( int8_t * ) target );
 258                 break;
 259         case 2:
 260                 addend = *( ( int16_t * ) target );
 261                 break;
 262         case 4:
 263                 addend = *( ( int32_t * ) target );
 264                 break;
 265         default:
 266                 fprintf ( stderr, "Unsupported add datasize %zd\n",
 267                           datasize );
 268                 return -1;
 269         }
 270
 271         val = size + addend;
 272
 273         /* The result of 1UL << ( 8 * sizeof(unsigned long) ) is undefined */
 274         mask = ( ( datasize < sizeof ( mask ) ) ?
 275                  ( ( 1UL << ( 8 * datasize ) ) - 1 ) : ~0UL );
 276
 277         if ( val < 0 ) {
 278                 fprintf ( stderr, "Add %s%#x+%#lx at %#zx %sflows field\n",
 279                           ( ( addend < 0 ) ? "-" : "" ), abs ( addend ), size,
 280                           offset, ( ( addend < 0 ) ? "under" : "over" ) );
 281                 return -1;
 282         }
 283
 284         if ( val & ~mask ) {
 285                 fprintf ( stderr, "Add %s%#x+%#lx at %#zx overflows %zd-byte "
 286                           "field (%d bytes too big)\n",
 287                           ( ( addend < 0 ) ? "-" : "" ), abs ( addend ), size,
 288                           offset, datasize,
 289                           ( int )( ( val - mask - 1 ) * add->divisor ) );
 290                 return -1;
 291         }
 292
 293         switch ( datasize ) {
 294         case 1:
 295                 *( ( uint8_t * ) target ) = val;
 296                 break;
 297         case 2:
 298                 *( ( uint16_t * ) target ) = val;
 299                 break;
 300         case 4:
 301                 *( ( uint32_t * ) target ) = val;
 302                 break;
 303         }
 304
 305         if ( DEBUG ) {
 306                 fprintf ( stderr, "ADDx [%#zx,%#zx) (%s%#x+(%#zx/%#x)) = "
 307                           "%#lx\n", offset, ( offset + datasize ),
 308                           ( ( addend < 0 ) ? "-" : "" ), abs ( addend ),
 309                           len, add->divisor, val );
 310         }
 311
 312         return 0;
 313 }
 314
 315 static int process_zinfo_addb ( struct input_file *input,
 316                                 struct output_file *output,
 317                                 union zinfo_record *zinfo ) {
 318         return process_zinfo_add ( input, output, output->len,
 319                                    &zinfo->add, 1 );
 320 }
 321
 322 static int process_zinfo_addw ( struct input_file *input,
 323                                 struct output_file *output,
 324                                 union zinfo_record *zinfo ) {
 325         return process_zinfo_add ( input, output, output->len,
 326                                    &zinfo->add, 2 );
 327 }
 328
 329 static int process_zinfo_addl ( struct input_file *input,
 330                                 struct output_file *output,
 331                                 union zinfo_record *zinfo ) {
 332         return process_zinfo_add ( input, output, output->len,
 333                                    &zinfo->add, 4 );
 334 }
 335
 336 static int process_zinfo_adhb ( struct input_file *input,
 337                                 struct output_file *output,
 338                                 union zinfo_record *zinfo ) {
 339         return process_zinfo_add ( input, output, output->hdr_len,
 340                                    &zinfo->add, 1 );
 341 }
 342
 343 static int process_zinfo_adhw ( struct input_file *input,
 344                                 struct output_file *output,
 345                                 union zinfo_record *zinfo ) {
 346         return process_zinfo_add ( input, output, output->hdr_len,
 347                                    &zinfo->add, 2 );
 348 }
 349
 350 static int process_zinfo_adhl ( struct input_file *input,
 351                                 struct output_file *output,
 352                                 union zinfo_record *zinfo ) {
 353         return process_zinfo_add ( input, output, output->hdr_len,
 354                                    &zinfo->add, 4 );
 355 }
 356
 357 struct zinfo_processor {
 358         char *type;
 359         int ( * process ) ( struct input_file *input,
 360                             struct output_file *output,
 361                             union zinfo_record *zinfo );
 362 };
 363
 364 static struct zinfo_processor zinfo_processors[] = {
 365         { "COPY", process_zinfo_copy },
 366         { "PACK", process_zinfo_pack },
 367         { "PAYL", process_zinfo_payl },
 368         { "ADDB", process_zinfo_addb },
 369         { "ADDW", process_zinfo_addw },
 370         { "ADDL", process_zinfo_addl },
 371         { "ADHB", process_zinfo_adhb },
 372         { "ADHW", process_zinfo_adhw },
 373         { "ADHL", process_zinfo_adhl },
 374 };
 375
 376 static int process_zinfo ( struct input_file *input,
 377                            struct output_file *output,
 378                            union zinfo_record *zinfo ) {
 379         struct zinfo_common *common = &zinfo->common;
 380         struct zinfo_processor *processor;
 381         char type[ sizeof ( common->type ) + 1 ] = "";
 382         unsigned int i;
 383
 384         strncat ( type, common->type, sizeof ( type ) - 1 );
 385         for ( i = 0 ; i < ( sizeof ( zinfo_processors ) /
 386                             sizeof ( zinfo_processors[0] ) ) ; i++ ) {
 387                 processor = &zinfo_processors[i];
 388                 if ( strcmp ( processor->type, type ) == 0 )
 389                         return processor->process ( input, output, zinfo );
 390         }
 391
 392         fprintf ( stderr, "Unknown zinfo record type \"%s\"\n", &type[0] );
 393         return -1;
 394 }
 395
 396 static int write_output_file ( struct output_file *output ) {
 397         if ( fwrite ( output->buf, 1, output->len, stdout ) != output->len ) {
 398                 fprintf ( stderr, "Could not write %zd bytes of output: %s\n",
 399                           output->len, strerror ( errno ) );
 400                 return -1;
 401         }
 402         return 0;
 403 }
 404
 405 int main ( int argc, char **argv ) {
 406         struct input_file input;
 407         struct output_file output;
 408         struct zinfo_file zinfo;
 409         unsigned int i;
 410
 411         if ( argc != 3 ) {
 412                 fprintf ( stderr, "Syntax: %s file.bin file.zinfo "
 413                           "> file.zbin\n", argv[0] );
 414                 exit ( 1 );
 415         }
 416
 417         if ( read_input_file ( argv[1], &input ) < 0 )
 418                 exit ( 1 );
 419         if ( read_zinfo_file ( argv[2], &zinfo ) < 0 )
 420                 exit ( 1 );
 421         if ( alloc_output_file ( ( input.len * 4 ), &output ) < 0 )
 422                 exit ( 1 );
 423
 424         for ( i = 0 ; i < zinfo.num_entries ; i++ ) {
 425                 if ( process_zinfo ( &input, &output,
 426                                      &zinfo.zinfo[i] ) < 0 )
 427                         exit ( 1 );
 428         }
 429
 430         if ( write_output_file ( &output ) < 0 )
 431                 exit ( 1 );
 432
 433         return 0;
 434 }