Shamusworld >> Repos - rln/blob - rln.c

   1 //
   2 // RLN - Reboot's Linker for the Atari Jaguar Console System
   3 // RLN.C - Application Code
   4 // Copyright (C) 199x, Allan K. Pratt, 2011 Reboot & Friends
   5 //
   6
   7 #include "rln.h"
   8
   9 unsigned errflag = 0;                   // Error flag, goes TRUE on error
  10 unsigned waitflag = 0;                  // Wait for any keypress flag
  11 unsigned versflag = 0;                  // Version banner has been shown flag
  12 unsigned aflag = 0;                     // Absolute linking flag
  13 unsigned bflag = 0;                     // Don't remove mulitply def locals flag
  14 unsigned cflag = 0;                     // COF executable
  15 unsigned dflag = 0;                     // Wait for key after link flag
  16 unsigned gflag = 0;                     // Source level debug include flag
  17 unsigned lflag = 0;                     // Add local symbols to output flag
  18 unsigned mflag = 0;                     // Produce symbol load map flag
  19 unsigned oflag = 0;                     // Output filename specified
  20 unsigned rflag = 0;                     // Segment alignment size flag
  21 unsigned sflag = 0;                     // Output only global symbols
  22 unsigned vflag = 0;                     // Verbose flag
  23 unsigned wflag = 0;                     // Show warnings flag
  24 unsigned zflag = 0;                     // Suppress banner flag
  25 unsigned pflag, uflag;                  // Unimplemented flags
  26 unsigned hd = 0;                        // Index of next file handle to fill
  27 unsigned secalign = 7;                  // Section Alignment (8=phrase)
  28 unsigned tbase = 0;                     // TEXT base address
  29 unsigned dbase = 0;                     // DATA base address
  30 unsigned bbase = 0;                     // BSS base address
  31 unsigned textoffset = 0;                // COF TEXT segment offset
  32 unsigned dataoffset = 0;                // COF DATA segment offset
  33 unsigned bssoffset = 0;                 // COF BSS segment offset
  34 unsigned displaybanner = 1;             // Display version banner
  35 unsigned symoffset = 0;                 // Symbol table offset in output file
  36 unsigned dosymi = 0;                    // Dosym() processing iterator
  37 unsigned dbgsymbase = 0;                // Debug symbol base address
  38 //unsigned symtrunc = 0;                // Symbol truncation -i and -ii
  39 int noheaderflag = 0;                   // No header flag for ABS files
  40 int hflags;                             // Value of the arg to -h option
  41 int ttype, dtype, btype;                // Type flag: 0, -1, -2, -3, -4
  42 int tval, dval, bval;                   // Values of these abs bases
  43 int hflag[NHANDLES];                    // True for include files
  44 int handle[NHANDLES];                   // Open file handles
  45 int textsize, datasize, bsssize;        // Cumulative segment sizes
  46 char libdir[FARGSIZE * 3];              // Library directory to search
  47 char ofile[FARGSIZE];                   // Output file name (.o)
  48 char * name[NHANDLES];                  // Associated file names
  49 char * cmdlnexec = NULL;                // Executable name - pointer to ARGV[0]
  50 char * hsym1[SYMLEN];                   // First symbol for include files
  51 char * hsym2[SYMLEN];                   // Second symbol for include files
  52 struct OFILE * plist = NULL;            // Object image list pointer
  53 struct OFILE * plast;                   // Last object image list pointer
  54 struct OFILE * olist = NULL;            // Pointer to first object file in list
  55 struct OFILE * olast;                   // Pointer to last object file in list
  56 char obj_fname[512][FNLEN];             // Object file names
  57 unsigned obj_segsize[512][3];           // Object file seg sizes; TEXT,DATA,BSS
  58 unsigned obj_index = 0;                 // Object file index/count
  59 struct HREC * htable[NBUCKETS];         // Hash table
  60 struct HREC * unresolved = NULL;        // Pointer to unresolved hash list
  61 struct HREC * lookup(char *);           // Hash lookup
  62 char * ost;                             // Output symbol table
  63 char * ost_ptr;                         // Output symbol table; current pointer
  64 char * ost_end;                         // Output symbol table; end pointer
  65 char * oststr;                          // Output string table
  66 char * oststr_ptr;                      // Output string table; current pointer
  67 char * oststr_end;                      // Output string table; end pointer
  68 int ost_index = 0;                      // Index of next ost addition
  69 int endian;                             // Processor endianess
  70
  71 // Some human readable defines for endianess
  72 #define ENDIANNESS_BIG     1
  73 #define ENDIANNESS_LITTLE  0
  74
  75
  76 //
  77 // Get a Long Word from Memory
  78 //
  79 uint32_t getlong(uint8_t * src)
  80 {
  81         uint32_t temp;
  82         uint8_t * out;
  83
  84         out = (uint8_t *)&temp;
  85
  86         if (endian == ENDIANNESS_BIG)
  87         {
  88                 *out++ = src[0];
  89                 *out++ = src[1];
  90                 *out++ = src[2];
  91                 *out = src[3];
  92         }
  93         else
  94         {
  95                 *out++ = src[3];
  96                 *out++ = src[2];
  97                 *out++ = src[1];
  98                 *out = src[0];
  99         }
 100
 101         return temp;
 102 }
 103
 104
 105 //
 106 // Put a Long Word into Memory
 107 //
 108 void putlong(uint8_t * dest, uint32_t val)
 109 {
 110         *dest++ = (uint8_t)(val >> 24);
 111         *dest++ = (uint8_t)(val >> 16);
 112         *dest++ = (uint8_t)(val >> 8);
 113         *dest = (uint8_t)val;
 114 }
 115
 116
 117 //
 118 // Get a Word from Memory
 119 //
 120 uint16_t getword(uint8_t * src)
 121 {
 122         uint16_t temp;
 123         uint8_t * out;
 124
 125         out = (uint8_t *)&temp;
 126 #if 0
 127         // Shamus: This assumes little endian...
 128         *out++ = src[1];
 129         *out++ = src[0];
 130 // Shamus: And *why* do this as a uint32_t???
 131 //      *out++ = 0;
 132 //      *out = 0;
 133 #else
 134         if (endian == ENDIANNESS_BIG)
 135         {
 136                 out[0] = src[0];
 137                 out[1] = src[1];
 138         }
 139         else
 140         {
 141                 out[0] = src[1];
 142                 out[1] = src[0];
 143         }
 144 #endif
 145
 146         return temp;
 147 }
 148
 149
 150 //
 151 // Put a Word into Memory
 152 //
 153 void putword(uint8_t * dest, uint16_t val)
 154 {
 155         *dest++ = (uint8_t)(val >> 8);
 156         *dest = (uint8_t)val;
 157 }
 158
 159
 160 //
 161 // Obtain a File's Size
 162 //
 163 long FSIZE(int fd)
 164 {
 165         unsigned temp, hold;
 166
 167         temp = lseek(fd, 0L, SEEK_CUR);
 168         hold = lseek(fd, 0L, SEEK_END);
 169         lseek(fd, 0L, SEEK_SET);
 170
 171         return hold;
 172 }
 173
 174
 175 //
 176 // For this object file, add symbols to the output symbol table after
 177 // relocating them. Returns TRUE if ost_lookup returns an error (-1).
 178 //
 179 int dosym(struct OFILE * ofile)
 180 {
 181         char * symptr;                                            // Symbol pointer
 182         char * symend;                                            // Symbol end pointer
 183         int type;                                                // Symbol type
 184         long value;                                              // Symbol value
 185         int index;                                               // Symbol index
 186         int j;                                                   // Iterator
 187         int ssidx;                                               // Segment size table index
 188         unsigned tsegoffset;                                     // Cumulative TEXT segment offset
 189         unsigned dsegoffset;                                     // Cumulative DATA segment offset
 190         unsigned bsegoffset;                                     // Cumulative BSS segment offset
 191         struct HREC * hptr;                                       // Hash table pointer for globl/extrn
 192         char sym[SYMLEN];                                        // String for symbol name/hash search
 193
 194         // Point to first symbol record in the object file
 195         symptr = (ofile->o_image + 32
 196                 + ofile->o_header.tsize
 197                 + ofile->o_header.dsize
 198                 + ofile->o_header.absrel.reloc.tsize
 199                 + ofile->o_header.absrel.reloc.dsize);
 200
 201         // Point to end of symbol record in the object file
 202         symend = symptr + ofile->o_header.ssize;
 203
 204         // Search through object segment size table to accumulated segment sizes to ensure
 205         // the correct offsets are used in the resulting COF file.
 206         ssidx = -1;                                              // Initialise segment index
 207         tsegoffset = dsegoffset = bsegoffset = 0;                // Initialise segment offsets
 208
 209         for(j=0; j<(int)obj_index; j++)
 210         {                    // Search for object file name
 211                 if (!strcmp(ofile->o_name, obj_fname[j]))
 212                 {
 213                         ssidx = j;                                         // Object file name found
 214                         break;
 215                 }
 216
 217                 tsegoffset += obj_segsize[j][0];                      // Accumulate segment sizes
 218                 dsegoffset += obj_segsize[j][1];
 219                 bsegoffset += obj_segsize[j][2];
 220         }
 221
 222         if (ssidx == -1)
 223         {
 224                 printf("dosym() : Cannot get object file segment size : %s\n", ofile->o_name);
 225                 return 1;
 226         }
 227
 228         // Process each record in the symbol table
 229         for(; symptr!=symend; symptr+=12)
 230         {
 231                 index = getlong(symptr + 0);                          // Obtain symbol string index
 232                 type  = getlong(symptr + 4);                          // Obtain symbol type
 233                 value = getlong(symptr + 8);                          // Obtain symbol value
 234
 235                 // Global/External symbols have a pre-processing stage
 236                 if (type & 0x01000000)
 237                 {
 238                         // Obtain the string table index for the relocation symbol, look for it in the globals
 239                         // hash table to obtain information on that symbol. For the hash calculation to work
 240                         // correctly it must be placed in a 'clean' string before looking it up.
 241                         memset(sym, 0, SYMLEN);
 242                         strcpy(sym, symend + index);
 243                         hptr = lookup(sym);
 244
 245                         if (hptr == NULL)
 246                         {
 247                                 printf("dosym() : Cannot determine symbol : %s\n", sym);
 248                                 return 1;
 249                         }
 250
 251                         // Search through object segment size table to obtain segment sizes for the object
 252                         // that has the required external/global as a local symbol. As each object is
 253                         // interrogated the segment sizes are accumulated to ensure the correct offsets are
 254                         // used in the resulting COF file.  This is effectively 'done again' only as we
 255                         // are working with a different object file.
 256                         ssidx = -1;                                        // Initialise segment index
 257                         tsegoffset = dsegoffset = bsegoffset = 0;          // Initialise segment offsets
 258
 259                         for(j=0; j<(int)obj_index; j++)
 260                         {              // Search for object filename
 261                                 if (!strcmp((const char *)hptr->h_ofile, obj_fname[j]))
 262                                 {
 263                                         ssidx = j;                                   // Symbol object filename
 264                                         break;
 265                                 }
 266
 267                                 tsegoffset += obj_segsize[j][0];                // Accumulate segment sizes
 268                                 dsegoffset += obj_segsize[j][1];
 269                                 bsegoffset += obj_segsize[j][2];
 270                         }
 271
 272                         if (ssidx == -1)
 273                         {
 274                                 printf("dosym() : Cannot get object file segment size : %s\n",
 275                                         ofile->o_name);
 276                                 return 1;
 277                         }
 278
 279                         type = hptr->h_type;                               // Update type with global type
 280
 281                         if (type == 0x03000000)
 282                                 type = 0x02000000;          // Reset external flag if absolute
 283
 284                         // If the global/external has a value then update that vaule in accordance with the
 285                         // segment sizes of the object file it originates from
 286                         if (hptr->h_value)
 287                         {
 288                                 switch (hptr->h_type & 0x0E000000)
 289                                 {
 290                                 case 0x02000000:                             // Absolute value
 291                                 case 0x04000000:                             // TEXT segment
 292                                         value = hptr->h_value;
 293                                         break;
 294                                 case 0x06000000:                             // DATA segment
 295                                         value = hptr->h_value - (hptr->h_ofile->o_header.tsize);
 296                                         break;
 297                                 case 0x08000000:                             // BSS segment
 298                                         value = hptr->h_value
 299                                                 - (hptr->h_ofile->o_header.tsize + hptr->h_ofile->o_header.dsize);
 300                                 break;
 301                                 }
 302                         }
 303                 }
 304
 305                 // Process and update the value dependant on whether the symbol is a debug symbol or not
 306                 if (type & 0xF0000000)
 307                 {                               // DEBUG SYMBOL
 308                         // Set the correct debug symbol base address (TEXT segment)
 309                         dbgsymbase = 0;
 310
 311                         for(j=0; (unsigned)j<dosymi; j++)
 312                                 dbgsymbase += obj_segsize[j][0];
 313
 314                         switch (type & 0xFF000000)
 315                         {
 316                         case 0x64000000:
 317                                 value = tval + dbgsymbase;
 318                                 break;
 319                         case 0x44000000:
 320                         case 0x46000000:
 321                         case 0x48000000:
 322                                 value = tval + dbgsymbase + value;
 323                         default:
 324                                 break;
 325                         }
 326
 327                         putlong(symptr + 8, value);
 328                 }
 329                 else
 330                 {                                              // NON-DEBUG SYMBOL
 331                         // Now make modifications to the symbol value, local or global, based on the segment sizes
 332                         // of the object file currently being processed.
 333                         switch (type & T_SEG)
 334                         {
 335                         case 0x02000000:                                // Absolute value
 336                                 break;
 337                         case T_TEXT:                                    // TEXT segment
 338                                 if (type & 0x01000000)
 339                                         value = tbase + tsegoffset + value;
 340                                 else
 341                                         value = tbase + tsegoffset + value;
 342
 343                                 putlong(symptr + 8, value);
 344                                 break;
 345                         case T_DATA:                                    // DATA segment
 346                                 if (type & 0x01000000)
 347                                         value = dbase + dsegoffset + value;
 348                                 else
 349                                         value = dbase + dsegoffset + (value - ofile->o_header.tsize);
 350
 351                                 putlong(symptr + 8, value);
 352                                 break;
 353                         case T_BSS:                                     // BSS segment
 354                                 if (type & 0x01000000)
 355                                         value = bbase + bsegoffset + value;
 356                                 else
 357                                         value = bbase + bsegoffset
 358                                                 +(value - (ofile->o_header.tsize + ofile->o_header.dsize));
 359
 360                                 putlong(symptr + 8, value);
 361                                 break;
 362                         default:
 363                                 break;
 364                         }
 365                 }
 366
 367                 // Add to output symbol table
 368                 if (lflag || !islocal(type))
 369                 {
 370                         if (islocal(type) || isglobal(type))
 371                         {
 372                                 if ((index = ost_add(symend + index, type, value)) == -1)
 373                                         return 1;
 374                         }
 375                         else
 376                         {
 377                                 // Belongs in OST, but don't look it up yet
 378                                 index = -1;
 379                         }
 380                 }
 381         }
 382
 383         dosymi++;                                                // Increment dosym() processsing
 384         return 0;
 385 }
 386
 387
 388 //
 389 // Free Up Hash Records
 390 //
 391 void hash_free(void)
 392 {
 393         int i;
 394         struct HREC * htemp, * hptr;
 395
 396         for(i=0; i<NBUCKETS; i++)
 397         {
 398                 hptr = htable[i];
 399
 400                 while (hptr)
 401                 {
 402                         htemp = hptr->h_next;
 403                         free(hptr);
 404                         hptr = htemp;
 405                 }
 406         }
 407 }
 408
 409
 410 //
 411 // Add all Global and External Symbols to the Output Symbol Table
 412 //
 413 long docommon(void)
 414 {
 415         struct HREC * hptr;                                                     // Hash record pointer
 416         int i;                                                                          // Iterator
 417
 418         for(i=0; i<NBUCKETS; i++)
 419         {
 420                 for(hptr=htable[i]; hptr!=NULL; hptr=hptr->h_next)
 421                 {
 422                         if (iscommon(hptr->h_type))
 423                         {
 424                                 if (hptr->h_type == 0x03000000)
 425                                         hptr->h_type = 0x02000000;      // Absolutes can't be externals
 426
 427                                 if (ost_add(hptr->h_sym, hptr->h_type, hptr->h_value) == -1)
 428                                         return -1;
 429                         }
 430                 }
 431         }
 432
 433         return 0;
 434 }
 435
 436
 437 //
 438 // Add a Symbol's Name, Type, and Value to the OST.
 439 // Return the Index of the Symbol in OST, or -1 for Error.
 440 //
 441 int ost_add(char * name, int type, long value)
 442 {
 443         int ost_offset_p, ost_offset_e = 0;                     // OST table offsets for position calcs
 444         int slen = 0;                                                           // Symbol string length
 445         int ostresult;                                                          // OST index result
 446
 447         slen = strlen(name);
 448
 449         // If the OST or OST String Table has not been initialised then do so
 450         if (ost_index == 0)
 451         {
 452                 if ((ost = malloc(OST_BLOCK)) == NULL)
 453                 {
 454                         printf("OST memory allocation error (stringtable).\n");
 455                         return -1;
 456                 }
 457
 458                 ost_ptr = ost;                                        // Set OST start pointer
 459                 ost_end = ost + OST_BLOCK;                            // Set OST end pointer
 460
 461                 if ((oststr = malloc(OST_BLOCK)) == NULL)
 462                 {
 463                         printf("OST memory allocation error (string).\n");
 464                         return -1;
 465                 }
 466
 467                 putlong(oststr, 0x00000004);                          // Just null long for now
 468                 oststr_ptr = oststr + 4;                              // Skip size of str table long (incl null long)
 469                 putlong(oststr_ptr, 0x00000000);                      // Null terminating long
 470                 oststr_end = oststr + OST_BLOCK;
 471         }
 472         else
 473         {
 474                 // If next symbol record exceeds current allocation then expand symbol table.
 475                 ost_offset_p = (ost_ptr - ost);
 476                 ost_offset_e = (ost_end - ost);
 477
 478                 // 3 x int (12)
 479                 if ((ost_ptr + 12) > ost_end)
 480                 {
 481                         if ((ost = realloc(ost, (unsigned)(ost_end + OST_BLOCK))) == NULL)
 482                         {
 483                                 printf("OST memory reallocation error.\n");
 484                                 return -1;
 485                         }
 486
 487                         ost_ptr = ost + ost_offset_p;
 488                         ost_end = (ost + ost_offset_e) + OST_BLOCK;
 489                 }
 490
 491                 ost_offset_p = (oststr_ptr - oststr);
 492                 ost_offset_e = (oststr_end - oststr);
 493
 494                 if ((oststr_ptr + (slen + 1 + 4)) > oststr_end)
 495                 {
 496                         if ((oststr = realloc(oststr, (unsigned)(oststr_end + OST_BLOCK))) == NULL)
 497                         {
 498                                 printf("OSTSTR memory reallocation error.\n");
 499                                 return -1;
 500                         }
 501
 502                         oststr_ptr = oststr + ost_offset_p;
 503                         oststr_end = (oststr + ost_offset_e) + OST_BLOCK;
 504                 }
 505         }
 506
 507         // If this is a debug symbol and the include debug symbol flag (-g) is not
 508         // set then do nothing
 509         if ((type & 0xF0000000) && !gflag)
 510         {
 511                 // Do nothing
 512         }
 513         else
 514         {
 515                 ostresult = ost_lookup(name);                         // Get symbol index in OST
 516
 517                 // If the symbol is in the output symbol table and the bflag is set
 518                 // (don't remove multiply defined locals) and this is not an
 519                 // external/global symbol *** OR *** the symbol is not in the output
 520                 // symbol table then add it.
 521                 if (((ostresult != -1) && bflag && !(type & 0x01000000))
 522                         || ((ostresult != -1) && gflag && (type & 0xF0000000)) || (ostresult == -1))
 523                 {
 524                         if ((type & 0xF0000000) == 0x40000000)
 525                                 putlong(ost_ptr, 0x00000000);                   // Zero string table offset for dbg line
 526                         else
 527                                 putlong(ost_ptr, (oststr_ptr - oststr));        // String table offset of symbol string
 528
 529                         putlong(ost_ptr + 4, type );
 530                         putlong(ost_ptr + 8, value);
 531                         ost_ptr += 12;
 532
 533                         // If the symbol type is anything but a debug line information
 534                         // symbol then write the symbol string to the string table
 535                         if ((type & 0xF0000000) != 0x40000000)
 536                         {
 537                                 strcpy(oststr_ptr, name);                       // Put symbol name in string table
 538                                 *(oststr_ptr + slen) = '\0';                    // Add null terminating character
 539                                 oststr_ptr += (slen + 1);
 540                                 putlong(oststr_ptr, 0x00000000);                // Null terminating long
 541                                 putlong(oststr, (oststr_ptr - oststr));         // Update size of string table
 542                         }
 543
 544                         return ost_index++;                               // Return OST index
 545                 }
 546         }
 547
 548         // not sure about this as it could affect return indices. needed to stop return error.
 549         return 0;
 550 }
 551
 552
 553 //
 554 // Return the Index of a Symbol in the Output Symbol Table
 555 //
 556 int ost_lookup(char * sym)
 557 {
 558         int i;                                      // Iterator
 559         int stro = 4;                               // Offset in string table
 560
 561         for(i=0; i<ost_index; i++)
 562         {
 563                 if (strcmp(oststr + stro, sym) == 0)
 564                         return i + 1;
 565
 566                 stro += strlen(oststr + stro) + 1;
 567         }
 568
 569         return -1;
 570 }
 571
 572
 573 //
 574 // Add Unresolved Externs to the Output Symbol Table
 575 //
 576 int dounresolved(void)
 577 {
 578         struct HREC * hptr, * htemp;                // Hash record pointers
 579         hptr = unresolved;                          // Point to unresolved symbols list
 580
 581         // While unresolved list is valid
 582         while (hptr != NULL)
 583         {
 584                 if (ost_add(hptr->h_sym, T_EXT, 0L) == -1)
 585                         return 1;
 586
 587 //printf("dounresolved(): added %s\n",hptr->h_sym);
 588                 htemp = hptr->h_next;                   // Temporarily get ptr to next record
 589                 free(hptr);                             // Free current record
 590                 hptr = htemp;                           // Make next record ptr, current
 591         }
 592
 593         unresolved = NULL;                          // Zero unresolved record list
 594         return 0;
 595 }
 596
 597
 598 //
 599 // Update Object File TEXT and DATA Segments Based on Relocation Records. Take
 600 // in an OFILE header and flag (T_TEXT, T_DATA) to process. Return (0) is
 601 // successful or non-zero (1) if failed.
 602 //
 603 int reloc_segment(struct OFILE * ofile, int flag)
 604 {
 605         char * symtab;                              // Start of symbol table
 606         char * symbols;                             // Start of symbols
 607         char * sptr;                                // Start of segment data
 608         char * rptr;                                // Start of segment relocation records
 609         unsigned symidx;                            // Offset to symbol
 610         unsigned addr;                              // Relocation address
 611         unsigned rflg;                              // Relocation flags
 612         unsigned olddata;                           // Old segment data at reloc address
 613         unsigned newdata = 0;                       // New segment data at reloc address
 614         unsigned pad;                               // Temporary to calculate phrase padding
 615         int i;                                      // Iterator
 616         char sym[SYMLEN];                           // String for symbol name/hash search
 617         int ssidx;                                  // Segment size table index
 618         unsigned glblreloc;                         // Global relocation flag
 619         unsigned absreloc;                          // Absolute relocation flag
 620         unsigned relreloc;                          // Relative relocation flag
 621         unsigned swcond;                            // Switch statement condition
 622         unsigned relocsize;                         // Relocation record size
 623
 624         // If there is no TEXT relocation data for the selected object file segment
 625         // then update the COF TEXT segment offset allowing for the phrase padding
 626         if ((flag == T_TEXT) && !ofile->o_header.absrel.reloc.tsize)
 627         {
 628                 // TEXT segment size plus padding
 629                 pad = ((ofile->o_header.tsize+secalign) & ~secalign);
 630                 textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
 631
 632                 if (vflag > 1)
 633                         printf("reloc_segment(%s, TEXT) : No Relocation Data\n", ofile->o_name);
 634
 635                 return 0;
 636         }
 637
 638         // If there is no DATA relocation data for the selected object file segment
 639         // then update the COF DATA and BSS segment offsets allowing for the phrase
 640         // padding
 641         if ((flag == T_DATA) && !ofile->o_header.absrel.reloc.dsize)
 642         {
 643                 // DATA segment size plus padding
 644                 pad = ((ofile->o_header.dsize + secalign) & ~secalign);
 645                 dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
 646                 // BSS segment size plus padding
 647                 pad = ((ofile->o_header.bsize + secalign) & ~secalign);
 648                 bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
 649
 650                 if (vflag > 1)
 651                         printf("reloc_segment(%s, DATA) : No Relocation Data\n", ofile->o_name);
 652
 653                 return 0;
 654         }
 655
 656         // Verbose mode information
 657         if (vflag > 1)
 658         {
 659                 printf("reloc_segment(%s, %s) : Processing Relocation Data\n",
 660                         ofile->o_name, flag == T_DATA ? "DATA" : "TEXT");
 661         }
 662
 663         // Obtain pointer to start of symbol table
 664         symtab = (ofile->o_image + 32 + ofile->o_header.tsize + ofile->o_header.dsize
 665                 + ofile->o_header.absrel.reloc.tsize + ofile->o_header.absrel.reloc.dsize);
 666
 667         // Obtain pointer to start of symbols
 668         symbols = symtab + ofile->o_header.ssize;
 669
 670         // Obtain pointer to start of TEXT segment
 671         sptr = ofile->o_image + 32;
 672
 673         // Obtain pointer to start of TEXT relocation records
 674         rptr = sptr + (ofile->o_header.tsize + ofile->o_header.dsize);
 675
 676         relocsize = ofile->o_header.absrel.reloc.tsize;
 677
 678     if (vflag)
 679     {
 680         printf("RELOCSIZE :: %d  Records = %d\n",relocsize,relocsize/8);
 681     }
 682
 683         // Update pointers if DATA relocation records are being processed
 684         if (flag == T_DATA)
 685         {
 686                 sptr += ofile->o_header.tsize;              // Start of DATA segment
 687                 rptr += ofile->o_header.absrel.reloc.tsize; // Start of DATA relocation records
 688                 relocsize = ofile->o_header.absrel.reloc.dsize;
 689         }
 690
 691         // Process each relocation record for the TEXT segment
 692         for(i=0; i<(int)relocsize; i+=8)
 693         {
 694                 // Obtain both the relocation address and the relocation flags from the
 695                 // object file image
 696                 addr = getlong(rptr);
 697                 rflg = getlong(rptr + 4);
 698                 glblreloc = (rflg & 0x00000010 ? 1 : 0);    // Set global relocation flag
 699                 absreloc = (rflg & 0x00000040 ? 1 : 0);     // Set absolute relocation flag
 700                 relreloc = (rflg & 0x000000A0 ? 1 : 0);     // Set relative relocation flag
 701
 702                 // Additional processing required for global relocations
 703                 if (glblreloc)
 704                 {
 705                         // Obtain the string table index for the relocation symbol, look
 706                         // for it in the globals hash table to obtain information on that
 707                         // symbol. For the hash calculation to work correctly it must be
 708                         // placed in a 'clean' string before looking it up.
 709                         symidx = getlong(symtab + ((rflg >> 8) * 12));
 710                         memset(sym, 0, SYMLEN);
 711                         strcpy(sym, symbols + symidx);
 712                         olddata = newdata = 0;              // Initialise old and new segment data
 713                         ssidx = ost_lookup(sym);
 714                         newdata = getlong(ost + ((ssidx - 1) * 12) + 8);
 715                 }
 716
 717                 // Obtain the existing long word segment data and flip words if the
 718                 // relocation flags indicate it relates to a RISC MOVEI instruction
 719                 olddata = getlong(sptr + addr);
 720
 721                 if (rflg & 0x01)
 722                         olddata = _SWAPWORD(olddata);
 723
 724                 // Process record dependant on segment it relates to; TEXT, DATA or
 725                 // BSS. Construct a new relocated segment long word based on the
 726                 // required segment base address, the segment data offset in the
 727                 // resulting COF file and the offsets from the incoming object file.
 728                 //swcond = glblreloc ? ((hptr->h_type & 0x0E000000) >> 16) : (rflg & 0xFFFFFF00);
 729                 swcond = (rflg & 0xFFFFFF00);
 730
 731                 if (!glblreloc)
 732                 {
 733                         switch (swcond)
 734                         {
 735                         case 0x00000200:                    // Absolute Value
 736                                 break;
 737                         case 0x00000400:                    // TEXT segment relocation record
 738 //AARRRGGGGHHHHH! does the else belong to the 1st 'if' or the 2nd?
 739 // can we trust the indention to tell the truth here???
 740 // Braces were not here, so if something breaks, try pairing the else to the 1st 'if'...
 741                                 if (!glblreloc)
 742                                 {
 743                                         if (flag == T_TEXT)     // Is this a TEXT section record?
 744                                                 newdata = tbase + textoffset + olddata;
 745                                         else
 746                                                 newdata = tbase + dataoffset + olddata; // Nope, must be DATA section
 747                                 }
 748
 749                                 break;
 750                         case 0x00000600:                    // DATA segment relocation record
 751                                 if (!glblreloc)
 752                                         newdata = dbase + dataoffset + (olddata - ofile->o_header.tsize);
 753
 754                                 break;
 755                         case 0x00000800:                    // BSS segment relocation record
 756                                 if (!glblreloc)
 757                                         newdata = bbase + bssoffset
 758                                                 + (olddata - (ofile->o_header.tsize + ofile->o_header.dsize));
 759
 760                                 break;
 761                         }
 762                 }
 763                 else
 764                 {
 765                         if (!relreloc)
 766                                 newdata += olddata;
 767                 }
 768
 769                 // Set absolute (long) or relative (word) address of symbol
 770                 if (absreloc)
 771                 {
 772                         // Flip the new long word segment data if the relocation record
 773                         // indicated a RISC MOVEI instruction and place the resulting data
 774                         // back in the COF segment
 775                         if (rflg & 0x01)
 776                                 newdata = _SWAPWORD(newdata);
 777
 778                         putlong(sptr + addr, newdata);
 779                 }
 780                 else if (relreloc)
 781                 {
 782                         putword(sptr + addr, newdata - tbase - addr - ofile->o_tbase);
 783                 }
 784
 785                 // Shamus: Let's output some info to aid in debugging this crap
 786                 if (vflag > 1)
 787                 {
 788                         char ssiString[128];
 789                         ssiString[0] = 0;
 790
 791                         if (glblreloc)
 792                                 sprintf(ssiString, " [ssi:%i]", ssidx);
 793
 794                         printf("reloc_segment($%08X): %s, $%08X: $%08X => $%08X%s\n", rflg, (glblreloc ? sym : "(LOCAL)"), addr, olddata, getlong(sptr + addr), ssiString);
 795                 }
 796
 797                 rptr += 8;                              // Point to the next relocation record
 798         }
 799
 800         // Update the COF segment offset allowing for the phrase padding.
 801         if (flag == T_TEXT)
 802         {
 803                 // TEXT segment plus padding
 804                 pad = ((ofile->o_header.tsize + secalign) & ~secalign);
 805                 textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
 806         }
 807         else
 808         {
 809                 // DATA segment plus padding
 810                 pad = ((ofile->o_header.dsize + secalign) & ~secalign);
 811                 dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
 812                 // BSS segment plus padding
 813                 pad = ((ofile->o_header.bsize + secalign) & ~secalign);
 814                 bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
 815         }
 816
 817         // Return value, should always be zero
 818         return 0;
 819 }
 820
 821
 822 //
 823 // Add a path character to the end of string 's' if it doesn't already end with
 824 // one. The last occurrance of '/' or '\\' in the string is assumed to be the
 825 // path character.
 826 //
 827 void pathadd(char * s)
 828 {
 829         // And hope to God that there's enough space in the buffer...
 830         char pathchar = 0;
 831
 832         while (*s)
 833         {
 834                 if (*s == '/' || *s == '\\')
 835                         pathchar = *s;
 836
 837                 s++;
 838         }
 839
 840         s--;
 841
 842         if (*s == pathchar)
 843                 return;
 844
 845         *++s = pathchar;
 846         *++s = 0;
 847 }
 848
 849
 850 //
 851 // Try to open "name", "name.o", "${libdir}name", "${libdir}name.o". Return the
 852 // handle of the file successfully opened. p_name is updated to point to a
 853 // malloc()'ed string which is the name which actually got opened. p_name will
 854 // return unchanged if the file can't be found.
 855 //
 856 int tryopen(char ** p_name)
 857 {
 858         char * name = *p_name;                                   // Filename
 859         char * tmpbuf, * lastdot;                                // Buffer and 'dot' pointers
 860         int fd, hasdot;                                          // File descriptor and 'has dot' flag
 861
 862         // Note that libdir will be an empty string if there is none specified
 863         if ((tmpbuf = malloc((long)strlen(name) + strlen(libdir) + 3)) == NULL)
 864         {
 865                 printf("tryopen() : out of memory\n");
 866                 return -1;
 867         }
 868
 869         strcpy(tmpbuf, name);
 870         hasdot = ((lastdot = strrchr(tmpbuf, '.')) > strrchr(tmpbuf, '/'))
 871                 && (lastdot > strrchr(tmpbuf, '\\'));
 872
 873         if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
 874                 goto ok;       // Try to open file as passed first
 875
 876         if (!hasdot)
 877         {
 878                 strcat(tmpbuf, ".o");                                 // Try to open file with '.o' added
 879
 880                 if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
 881                         goto ok;
 882         }
 883
 884         // Try the libdir only if the name isn't already anchored
 885         if (*name != '/' && *name != '\\' && !strchr(name, ':'))
 886         {
 887                 strcpy(tmpbuf,libdir);
 888                 // Add a trailing path char if there isn't one already
 889                 pathadd(tmpbuf);
 890                 strcat(tmpbuf, name);
 891
 892                 if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
 893                         goto ok;
 894
 895                 if (!hasdot)
 896                 {
 897                         strcat(tmpbuf, ".o");
 898
 899                         if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
 900                                 goto ok;
 901                 }
 902         }
 903
 904         return -1;                                              // Couldn't open file at all
 905
 906 // What more Atari label use - sigh!!!
 907 ok:
 908         if ((tmpbuf = realloc(tmpbuf, (long)strlen(tmpbuf) + 1)) == NULL)
 909         {
 910                 printf("tryopen() : out of memory\n");
 911                 return -1;
 912         }
 913
 914         *p_name = tmpbuf;
 915         return fd;                                              // Return file descriptor
 916 }
 917
 918
 919 //
 920 // Archive File Use, Needs to be Removed
 921 //
 922 void put_name(struct OFILE * p)
 923 {
 924         int flag = *(p->o_arname);
 925         printf("%s%s%s", (flag ? (char *)(p->o_arname) : ""), (flag ? ":" : ""), p->o_name);
 926 }
 927
 928
 929 //
 930 // Collect file names and handles in a buffer so there is less disk activity.
 931 // Call dofile with flag FALSE for normal object files and archives.
 932 // Call it with flag TRUE and a symbol name for include files (-i).
 933 //
 934 int dofile(char * fname, int flag, char * sym)
 935 {
 936         int fd;                                                  // File descriptor
 937         int temp;                                                // Temporary storage
 938
 939         // Verbose information
 940         if (vflag)
 941         {
 942                 printf("dofile() : `%s' %s", fname, flag ? "INCLUDE" : "NORMAL");
 943
 944                 if (flag)
 945                         printf(" symbol %s", sym);
 946
 947                 printf("\n");
 948         }
 949
 950         // Reached maximum file handles
 951         if (hd == NHANDLES)
 952         {
 953                 if (flush_handles())
 954                         return 1;
 955         }
 956
 957         // Attempt to open input file
 958         if ((fd = tryopen(&fname)) < 0)
 959         {
 960                 printf("Cannot find input module %s\n", fname);
 961                 return 1;
 962         }
 963
 964         // The file is open; save its info in the handle and name arrays
 965         handle[hd] = fd;
 966         name[hd] = fname;                                        // This is the name from tryopen()
 967         hflag[hd] = flag;
 968
 969         // Include files
 970         if (flag)
 971         {
 972                 temp = strlen(sym);                                   // Get symbol length
 973
 974                 // 100 chars is max length of a symbol
 975                 if (temp > 99)
 976                 {
 977                         sym[99] = '\0';
 978                         temp = 99;
 979                 }
 980
 981                 // Malloc enough space for two symbols, then build the second one. Second one may be one
 982                 // character longer than first
 983                 if ((hsym1[hd] = malloc((long)temp + 1)) == NULL
 984                         || (hsym2[hd] = malloc((long)temp + 2)) == NULL)
 985                 {
 986                         printf("dofile() : out of memory for include-file symbols\n");
 987                         return 1;
 988                 }
 989
 990                 strcpy(hsym1[hd], sym);
 991                 strcpy(hsym2[hd], sym);
 992
 993                 if (temp == 99)
 994                 {
 995                         if (sym[99] == 'x')
 996                         {
 997                                 printf("Last char of %s is already 'x': choose another name\n", sym);
 998                                 return 1;
 999                         }
1000
1001                         hsym2[hd][99] = 'x';
1002                 }
1003                 else
1004                 {
1005                         hsym2[hd][temp] = 'x';
1006                         hsym2[hd][temp+1] = '\0';
1007                 }
1008         }
1009
1010         hd++;                                                    // Increment next handle index
1011         return 0;                                               // No problems
1012 }
1013
1014
1015 //
1016 // Pad TEXT or DATA Segment to the Requested Boundary
1017 //
1018 int segmentpad(FILE * fd, long segsize, int value)
1019 {
1020         long padsize;                                            // Number of pad bytes needed
1021         int i;                                                   // Good 'ol iterator
1022         char padarray[32];                                       // Array of padding bytes
1023         char * padptr;                                           // Pointer to array
1024
1025         // Determine the number of padding bytes that are needed
1026         padsize = (segsize + secalign) & ~secalign;
1027         padsize = padsize - segsize;
1028
1029         // Fill pad array if padding is required
1030         if (padsize)
1031         {
1032                 padptr = padarray;
1033
1034                 for(i=0; i<16; i++)
1035                 {
1036                         putword(padptr, value);
1037                         padptr += 2;
1038                 }
1039
1040                 symoffset += padsize;
1041
1042                 if (fwrite(padarray, padsize, 1, fd) != 1)            // Write padding bytes
1043                         return 1;
1044         }
1045
1046         return 0;                                                // All done
1047 }
1048
1049
1050 //
1051 // Write the Output File
1052 //
1053 int write_ofile(struct OHEADER * header)
1054 {
1055         FILE * fd;                                               // File descriptor
1056         unsigned osize;                                          // Object segment size
1057         struct OFILE * otemp;                                    // Object file pointer
1058         int i, j;                                                // Iterators
1059         char himage[0x168];                                      // Header image (COF = 0xA8)
1060         unsigned tsoff, dsoff, bsoff;                            // Segment offset values
1061         unsigned index, type, value;                             // Symbol table index, type and value
1062         short abstype;                                           // ABS symbol type
1063         char symbol[14];                                         // Symbol record for ABS files
1064         int slen;                                                // Symbol string length
1065
1066         symoffset = 0;                                           // Initialise symbol offset
1067
1068         // Add correct output extension if none
1069         if (strchr(ofile, '.') == NULL)
1070         {
1071                 if (aflag && cflag)
1072                         strcat(ofile, ".cof");            // COF files
1073                 else if (aflag && !cflag)
1074                         strcat(ofile, ".abs");      // ABS files
1075                 else
1076                         strcat(ofile, ".o");                             // Object files (partial linking etc)
1077         }
1078
1079         fd = fopen(ofile, "wb");                                 // Attempt to open output file
1080
1081         if (!fd)
1082         {
1083                 printf("Can't open output file %s\n", ofile);         // Error opening output file
1084                 return 1;
1085         }
1086
1087         // Build the output file header
1088         // Absolute (COF) header
1089         if (cflag)
1090         {
1091                 tsoff = dsoff = bsoff = 0xA8;                         // Initialises segment offsets
1092
1093                 // Process each object file segment size to obtain a cumulative segment size for both
1094                 // the TEXT and DATA segments
1095                 for(i=0; i<(int)obj_index; i++)
1096                 {
1097                         dsoff += obj_segsize[i][0];                        // Adding TEXT segment sizes
1098                         bsoff += obj_segsize[i][0] + obj_segsize[i][1];    // Adding TEXT and DATA segment sizes
1099                 }
1100
1101                 // Currently this only builds a COF absolute file. Conditionals and additional code will
1102                 // need to be added for ABS and partial linking.
1103
1104                 // Build the COF_HDR
1105                 putword(himage + 0,   0x0150               );         // Magic Number (0x0150)
1106                 putword(himage + 2,   0x0003               );         // Sections Number (3)
1107                 putlong(himage + 4,   0x00000000           );         // Date (0L)
1108                 putlong(himage + 8,   dsoff + header->dsize);         // Offset to Symbols Section
1109                 putlong(himage + 12,  ost_index);                     // Number of Symbols
1110                 putword(himage + 16,  0x001C               );         // Size of RUN_HDR (0x1C)
1111                 putword(himage + 18,  0x0003               );         // Executable Flags (3)
1112
1113                 // Build the RUN_HDR
1114                 putlong(himage + 20,  0x00000107           );         // Magic/vstamp
1115                 putlong(himage + 24,  header->tsize        );         // TEXT size in bytes
1116                 putlong(himage + 28,  header->dsize        );         // DATA size in bytes
1117                 putlong(himage + 32,  header->bsize        );         // BSS size in bytes
1118                 putlong(himage + 36,  tbase                );         // Start of executable, normally @TEXT
1119                 putlong(himage + 40,  tbase                );         // @TEXT
1120                 putlong(himage + 44,  dbase                );         // @DATA
1121
1122                 // Build the TEXT SEC_HDR
1123                 putlong(himage + 48,  0x2E746578           );
1124                 putlong(himage + 52,  0x74000000           );         // ".text"
1125                 putlong(himage + 56,  tbase                );         // TEXT START
1126                 putlong(himage + 60,  tbase                );         // TEXT START
1127                 putlong(himage + 64,  header->tsize        );         // TEXT size in bytes
1128                 putlong(himage + 68,  tsoff                );         // Offset to section data in file
1129                 putlong(himage + 72,  0x00000000           );         // Offset to section reloc in file (0L)
1130                 putlong(himage + 76,  0x00000000           );         // Offset to debug lines structures (0L)
1131                 putlong(himage + 80,  0x00000000           );         // Nreloc/nlnno (0L)
1132                 putlong(himage + 84,  0x00000020           );         // SEC_FLAGS: STYP_TEXT
1133
1134                 // Build the DATA SEC_HDR
1135                 putlong(himage + 88,  0x2E646174           );
1136                 putlong(himage + 92,  0x61000000           );         // ".data"
1137                 putlong(himage + 96,  dbase                );         // DATA START
1138                 putlong(himage + 100, dbase                );         // DATA START
1139                 putlong(himage + 104, header->dsize        );         // DATA size in bytes
1140                 putlong(himage + 108, dsoff                );         // Offset to section data in file
1141                 putlong(himage + 112, 0x00000000           );         // Offset to section reloc in file (0L)
1142                 putlong(himage + 116, 0x00000000           );         // Offset to debugging lines structures (0L)
1143                 putlong(himage + 120, 0x00000000           );         // Nreloc/nlnno (0L)
1144                 putlong(himage + 124, 0x00000040           );         // SEC_FLAGS: STYP_DATA
1145
1146                 // Build the BSS SEC_HDR
1147                 putlong(himage + 128, 0x2E627373           );
1148                 putlong(himage + 132, 0x00000000           );         // ".bss"
1149                 putlong(himage + 136, bbase                );         // BSS START
1150                 putlong(himage + 140, bbase                );         // BSS START
1151                 putlong(himage + 144, header->bsize        );         // BSS size in bytes
1152                 putlong(himage + 148, bsoff                );         // Offset to section data in file
1153                 putlong(himage + 152, 0x00000000           );         // Offset to section reloc in file (0L)
1154                 putlong(himage + 156, 0x00000000           );         // Offset to debugging lines structures (0L)
1155                 putlong(himage + 160, 0x00000000           );         // Nreloc/nlnno (0L)
1156                 putlong(himage + 164, 0x00000080           );         // SEC_FLAGS: STYP_BSS
1157
1158                 symoffset = 168;                                      // Update symbol offset
1159         }
1160         // Absolute (ABS) header
1161         else
1162         {
1163                 // Build the ABS header
1164                 putword(himage + 0,   0x601B               );         // Magic Number (0x601B)
1165                 putlong(himage + 2,   header->tsize        );         // TEXT segment size
1166                 putlong(himage + 6,   header->dsize        );         // DATA segment size
1167                 putlong(himage + 10,  header->bsize        );         // BSS segment size
1168                 putlong(himage + 14,  ost_index * 14       );         // Symbol table size (?)
1169                 putlong(himage + 18,  0x00000000           );         //
1170                 putlong(himage + 22,  tbase                );         // TEXT base address
1171                 putword(himage + 26,  0xFFFF               );         // Flags (?)
1172                 putlong(himage + 28,  dbase                );         // DATA base address
1173                 putlong(himage + 32,  bbase                );         // BSS base address
1174
1175                 symoffset = 36;                                       // Update symbol offset
1176         }
1177
1178         // Write the header, but not if noheaderflag
1179         // Absolute (ABS) header
1180         if (!cflag)
1181         {
1182                 if (!noheaderflag)
1183                         if (fwrite(himage, 36, 1, fd) != 1)
1184                                 goto werror;
1185         }
1186         // Absolute (COF) header
1187         else
1188         {
1189                 if (fwrite(himage, 168, 1, fd) != 1)
1190                         goto werror;
1191         }
1192
1193         // Write the TEXT segment of each object file
1194         for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1195         {
1196                 osize = otemp->o_header.tsize;
1197
1198                 // Write only if segment has size
1199                 if (osize)
1200                 {
1201                         if (vflag > 1)
1202                                 printf("Writing TEXT Segment of %s\n", otemp->o_name);
1203
1204                         if (fwrite(otemp->o_image + 32, osize, 1, fd) != 1)
1205                                 goto werror;
1206
1207                         // Pad to required alignment boundary
1208                         if (segmentpad(fd, osize, 0x0000))
1209                                 goto werror;
1210
1211                         symoffset += osize;
1212                 }
1213         }
1214
1215         // Write the DATA segment of each object file
1216         for(otemp = olist; otemp != NULL; otemp = otemp->o_next)
1217         {
1218                 osize = otemp->o_header.dsize;
1219
1220                 // Write only if the segment has size
1221                 if (osize)
1222                 {
1223                         if (vflag > 1)
1224                                 printf("Writing DATA Segment of %s\n", otemp->o_name);
1225
1226                         if (fwrite((otemp->o_image + 32 + otemp->o_header.tsize), osize, 1, fd) != 1)
1227                                 goto werror;
1228
1229                         // Pad to required alignment boundary
1230                         if (segmentpad(fd, osize, 0))
1231                                 goto werror;
1232
1233                         symoffset += osize;
1234                 }
1235         }
1236
1237         if (!noheaderflag)
1238         {
1239                 // Write the symbols table and string table
1240                 // Absolute (COF) symbol/string table
1241                 if (cflag)
1242                 {
1243                         if (header->ssize)
1244                         {
1245                                 if (fwrite(ost, (ost_ptr - ost), 1, fd) != 1) goto werror;
1246                                 if (fwrite(oststr, (oststr_ptr - oststr), 1, fd) != 1) goto werror;
1247                         }
1248                 }
1249                 // Absolute (ABS) symbol/string table
1250                 else
1251                 {
1252                         // The symbol and string table have been created as part of the dosym() function and the
1253                         // output symbol and string tables are in COF format. For an ABS file we need to process
1254                         // through this to create the 14 character long combined symbol and string table.
1255                         // Format of symbol table in ABS: AAAAAAAATTVVVV, where (A)=STRING, (T)=TYPE & (V)=VALUE
1256
1257                         for(i=0; i<ost_index; i++)
1258                         {
1259                                 memset(symbol, 0, 14);                             // Initialise symbol record
1260                                 abstype = 0;                                       // Initialise ABS symbol type
1261                                 slen = 0;                                          // Initialise symbol string length
1262                                 index = getlong(ost + (i * 12));                   // Get symbol index
1263                                 type  = getlong((ost + (i * 12)) + 4);             // Get symbol type
1264
1265                                 if (type & 0xF0000000)
1266                                         continue;                    // Not doing debug symbols
1267
1268                                 value = getlong((ost + (i * 12)) + 8);             // Get symbol value
1269                                 slen = strlen(oststr + index);
1270
1271                                 // Get symbol string (maximum 8 chars)
1272                                 if (slen > 8)
1273                                 {
1274                                         for(j=0; j<8; j++)
1275                                                 *(symbol + j) = *(oststr + index + j);
1276                                 }
1277                                 else
1278                                 {
1279                                         for(j=0; j<slen; j++)
1280                                                 *(symbol + j) = *(oststr + index + j);
1281                                 }
1282
1283                                 // Modify to ABS symbol type
1284                                 switch (type)
1285                                 {
1286                                 case 0x02000000: abstype = (short)ABST_DEFINED;                           break;
1287                                 case 0x04000000: abstype = (short)ABST_DEFINED | ABST_TEXT;               break;
1288                                 case 0x05000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_TEXT; break;
1289                                 case 0x06000000: abstype = (short)ABST_DEFINED | ABST_DATA;               break;
1290                                 case 0x07000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_DATA; break;
1291                                 case 0x08000000: abstype = (short)ABST_DEFINED | ABST_BSS;                break;
1292                                 case 0x09000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_BSS;  break;
1293                                 default:
1294                                         printf("write_ofile: abs, cannot determine symbol type\n");
1295                                         type = 0;
1296                                         break;
1297                                 }
1298
1299                                 putword(symbol + 8, abstype);                      // Write back new ABS type
1300                                 putlong(symbol + 10, value);                       // Write back value
1301
1302                                 if (fwrite(symbol, 14, 1, fd) != 1) goto werror;    // Write symbol record
1303                         }
1304                 }
1305         }
1306
1307         // Close the file
1308         if (fclose(fd))
1309         {
1310                 printf("Close error on output file %s\n",ofile);
1311                 return 1;
1312         }
1313         else
1314                 return 0;
1315
1316 werror:                                                  // OMG! Why did Atari use these :)
1317         printf("Write error on output file %s\n", ofile);
1318         fclose(fd);                                                            // Try to close output file anyway
1319         return 1;
1320 }
1321
1322
1323 //
1324 // Display the Symbol Load Map
1325 //
1326 int write_map(struct OHEADER * header)
1327 {
1328         unsigned i, o;                                           // Inner and outer loop iterators
1329         unsigned c;                                              // Column number
1330         unsigned index;                                          // Symbol string index
1331         unsigned type;                                           // Symbol type
1332         unsigned value;                                          // Symbol value
1333         char * symbol;                                           // Symbol string value
1334
1335         if (ost_index == 0)
1336                 return 0;                            // Return if no symbols to map
1337
1338         printf("LOAD MAP\n\n");
1339
1340         // Outer loop for each of the symbol areas to map out;
1341         // 0 = NON-RELOCATABLE SYMBOLS
1342         // 1 = TEXT-SEGMENT RELOCATABLE SYMBOLS
1343         // 2 = DATA-SEGMENT RELOCATABLE SYMBOLS
1344         // 3 = BSS-SEGMENT RELOCATABLE SYMBOLS
1345         for(o=0; o<4; o++)
1346         {
1347                 // Display the correct map header for the symbols being processed
1348                 switch (o)
1349                 {
1350                 case 0: printf("NON-RELOCATABLE SYMBOLS\n\n");          break;
1351                 case 1: printf("TEXT-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1352                 case 2: printf("DATA-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1353                 case 3: printf("BSS-SEGMENT RELOCATABLE SYMBOLS\n\n");  break;
1354                 }
1355
1356                 c = 0;                                                // Initialise column number
1357
1358                 // Inner loop to process each record in the symbol table
1359                 for(i=0; i<(unsigned)ost_index; i++)
1360                 {
1361                         index  = getlong(ost + (i * 12));                  // Get symbol string index
1362                         type   = getlong(ost + (i * 12) + 4);              // Get symbol type
1363                         value  = getlong(ost + (i * 12) + 8);              // Get symbol value
1364                         symbol = oststr + index;                           // Get symbol string
1365
1366                         // Display only three columns
1367                         if (c == 3)
1368                         {
1369                                 printf("\n");
1370                                 c = 0;
1371                         }
1372
1373                         // If local symbols not included and the type is local then go to next symbol record
1374                         if (!lflag & !(type & 0x01000000))
1375                                 continue;
1376
1377                         // Output each symbol to the display, dependant on type
1378                         switch (o)
1379                         {
1380                         case 0:                                         // Non-relocatable symbols
1381                                 if (type == 0x02000000 || type == 0x03000000)
1382                                 {
1383                                         printf("%-8s %c  %08X   ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1384                                         c++;
1385                                 }
1386
1387                                 break;
1388                         case 1:                                         // TEXT segment relocatable symbols
1389                                 if (type == 0x04000000 || type == 0x05000000)
1390                                 {
1391                                         printf("%-8s %c  %08X   ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1392                                         c++;
1393                                 }
1394
1395                                 break;
1396                         case 2:                                         // DATA segment relocatble symbols
1397                                 if (type == 0x06000000 || type == 0x07000000)
1398                                 {
1399                                         printf("%-8s %c  %08X   ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1400                                         c++;
1401                                 }
1402
1403                                 break;
1404                         case 3:                                         // BSS segment relocatable symbols
1405                                 if (type == 0x08000000 || type == 0x09000000)
1406                                 {
1407                                         printf("%-8s %c  %08X   ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1408                                         c++;
1409                                 }
1410
1411                                 break;
1412                         }
1413                 }
1414
1415                 printf("\n\n");
1416         }
1417
1418         return 0;                                               // All done
1419 }
1420
1421
1422 //
1423 // Convert ASCII to Hexadecimal
1424 //
1425 //int atolx(char * string, long * value)
1426 int atolx(char * string, int * value)
1427 {
1428         *value = 0;
1429
1430         while (isxdigit(*string))
1431         {
1432                 if (isdigit(*string))
1433                 {
1434                         *value = (*value << 4) + (*string++ - '0');
1435                 }
1436                 else
1437                 {
1438                         if (isupper(*string))
1439                                 *string = tolower(*string);
1440
1441                         *value = (*value << 4) + ((*string++ - 'a') + 10);
1442                 }
1443         }
1444
1445         if (*string != '\0')
1446         {
1447                 printf("Invalid hexadecimal value");
1448                 return 1;
1449         }
1450
1451         return 0;
1452 }
1453
1454
1455 //
1456 // Stuff the (long) value of a string into the value argument. RETURNS TRUE if
1457 // the string doesn't parse.  Parses only as a hex string.
1458 //
1459 //int getval(char * string, long * value)
1460 int getval(char * string, int * value)
1461 {
1462         return atolx(string, value);
1463 }
1464
1465
1466 //
1467 // Create one big .o file from the images already in memory, returning a
1468 // pointer to an OHEADER. Note that the oheader is just the header for the
1469 // output (plus some other information). The text, data, and fixups are all
1470 // still in the ofile images hanging off the global `olist'.
1471 //
1472 struct OHEADER * make_ofile()
1473 {
1474         unsigned tptr, dptr, bptr;                               // Bases in runtime model
1475         int ret = 0;                                             // Return value
1476         struct OFILE * otemp, * oprev, * ohold;                  // Object file list pointers
1477         struct OHEADER * header;                                 // Output header pointer
1478
1479         textsize = datasize = bsssize = 0;                       // Initialise cumulative segment sizes
1480
1481         // For each object file, accumulate the sizes of the segments but remove those
1482         // object files which are unused
1483         oprev = NULL;                                            // Init previous obj file list ptr
1484         otemp = olist;                                           // Set temp pointer to object file list
1485
1486         while (otemp != NULL)
1487         {
1488                 // UNUSED !!!!!
1489                 if (!(otemp->o_flags & O_ARCHIVE))
1490                 {
1491                         if ((otemp->o_flags & O_USED) == 0)
1492                         {
1493                                 if (wflag)
1494                                 {
1495                                         printf("Unused object file ");
1496                                         put_name(otemp);
1497                                         printf(" discarded.\n");
1498                                 }
1499
1500                                 if (oprev == NULL)
1501                                 {
1502                                         olist = otemp->o_next;
1503                                 }
1504                                 else
1505                                 {
1506                                         oprev -> o_next = otemp->o_next;
1507                                 }
1508
1509                                 ohold = otemp;
1510                                 free(ohold->o_image);
1511                                 free(ohold);
1512                         }
1513                         else
1514                         {
1515                                 // Increment total of segment sizes ensuring requested alignment
1516                                 textsize += (otemp->o_header.tsize + secalign) & ~secalign;
1517                                 datasize += (otemp->o_header.dsize + secalign) & ~secalign;
1518                                 bsssize  += (otemp->o_header.bsize + secalign) & ~secalign;
1519                                 oprev = otemp;
1520                         }
1521                 }
1522
1523                 otemp = otemp->o_next;                                // Go to next object file list pointer
1524         }
1525
1526         // Update base addresses and create symbols _TEXT_E, _DATA_E and _BSS_E
1527         tbase = tval;
1528         ost_add("_TEXT_E", 0x05000000, tval + textsize);
1529
1530         if (!dval)
1531         {
1532                 // DATA follows TEXT
1533                 dbase = tval + textsize;
1534                 ost_add("_DATA_E", 0x07000000, tval + textsize + datasize);
1535
1536                 if (!bval)
1537                 {
1538                         // BSS follows DATA
1539                         bbase = tval + textsize + datasize;
1540                         ost_add("_BSS_E", 0x09000000, tval + textsize + datasize + bsssize);
1541                 }
1542                 else
1543                 {
1544                         // BSS is independant of DATA
1545                         bbase = bval;
1546                         ost_add("_BSS_E", 0x09000000, bval + bsssize);
1547                 }
1548         }
1549         else
1550         {
1551                 // DATA is independant of TEXT
1552                 dbase = dval;
1553                 ost_add("_DATA_E", 0x07000000, dval + datasize);
1554
1555                 if (!bval)
1556                 {
1557                         // BSS follows DATA
1558                         bbase = dval + datasize;
1559                         ost_add("_BSS_E", 0x09000000, dval + datasize + bsssize);
1560                 }
1561                 else
1562                 {
1563                         // BSS is independant of DATA
1564                         bbase = bval;
1565                         ost_add("_BSS_E", 0x09000000, bval + bsssize);
1566                 }
1567         }
1568
1569         // Place each unresolved symbol in the output symbol table
1570         if (dounresolved())
1571                 return NULL;
1572
1573         tptr = 0;                                                // Initialise base addresses
1574         dptr = 0;
1575         bptr = 0;
1576
1577         // For each file, relocate its symbols and add them to the output symbol table
1578         otemp = olist;
1579         oprev = NULL;
1580
1581         while (otemp != NULL)
1582         {
1583                 otemp->o_tbase = tptr;
1584
1585                 // Do rest only for non-ARCHIVE markers
1586                 if (!(otemp->o_flags & O_ARCHIVE))
1587                 {
1588                         otemp->o_dbase = dptr;
1589                         otemp->o_bbase = bptr;
1590                         tptr += (otemp->o_header.tsize + secalign) & ~secalign;
1591                         dptr += (otemp->o_header.dsize + secalign) & ~secalign;
1592                         bptr += (otemp->o_header.bsize + secalign) & ~secalign;
1593                 }
1594
1595                 // For each symbol, (conditionally) add it to the ost
1596                 // For ARCHIVE markers, this adds the symbol for the file & returns
1597                 if (dosym(otemp))
1598                         return NULL;
1599
1600                 if (otemp->o_flags & O_ARCHIVE)
1601                 {
1602                         // Now that the archive is marked, remove it from list
1603                         if (oprev == NULL)
1604                                 olist = otemp->o_next;
1605                         else
1606                                 oprev->o_next = otemp->o_next;
1607
1608                         ohold = otemp;
1609
1610                         if (ohold->o_image) free(ohold->o_image);
1611                                 free(ohold);
1612                 }
1613                 else
1614                 {
1615                         oprev = otemp;
1616                 }
1617
1618                 otemp = otemp->o_next;
1619         }
1620
1621         // Places all the externs, globals etc into the output symbol table
1622         if (docommon() == -1)
1623                 return NULL;
1624
1625         // Create a new output file header
1626         if ((header = new_oheader()) == NULL)
1627         {
1628                 printf("make_ofile: out of memory!\n");
1629                 return NULL;
1630         }
1631
1632         // Fill in the output header. Does not match the actual output but values
1633         // used as reference
1634         header->magic = 0x0150;                     // COF magic number
1635         header->tsize = textsize;                   // TEXT segment size
1636         header->dsize = datasize;                   // DATA segment size
1637         header->bsize = bsssize;                    // BSS segment size
1638         header->ssize = (ost_ptr - ost);            // Symbol table size
1639         header->ostbase = ost;                      // Output symbol table base address
1640
1641         // For each object file, relocate its TEXT and DATA segments. OR the result
1642         // into ret so all files get moved (and errors reported) before returning
1643         // with the error condition
1644         for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1645         {
1646                 if (!(otemp->o_flags & O_ARCHIVE))
1647                 {
1648                         ret |= reloc_segment(otemp, T_TEXT);    // TEXT segment relocations
1649                         ret |= reloc_segment(otemp, T_DATA);    // DATA segment relocations
1650                 }
1651         }
1652
1653         hash_free();                                // Done with global symbol hash tables
1654
1655         return (ret ? (unsigned)NULL : header);
1656 }
1657
1658
1659 //
1660 // Add Symbol to Hash List
1661 //
1662 int add_to_hlist(struct HREC ** hptr, char * sym, struct OFILE * ofile, long value, int type)
1663 {
1664         struct HREC * htemp;                                      // Temporary hash record pointer
1665         int i;
1666
1667         // Attempt to allocate new hash record
1668         if ((htemp = new_hrec()) == NULL)
1669         {
1670                 printf("Out of memory\n");
1671                 return 1;
1672         }
1673
1674         // Shamus: Moar testing...
1675         if (vflag > 1)
1676         {
1677                 printf("add_to_hlist(): hptr=$%08X, sym=\"%s\", ofile=$%08X, value=%li, type=%i", (unsigned int)hptr, sym, (unsigned int)ofile, value, type);
1678         }
1679
1680         for(i=0; i<SYMLEN; i++)
1681                 htemp->h_sym[i] = '\0';
1682
1683         strcpy(htemp->h_sym, sym);                               // Populate hash record
1684         htemp->h_ofile = ofile;
1685         htemp->h_value = value;
1686         htemp->h_type = type;
1687
1688         htemp->h_next = *hptr;                                   // Update hash record pointers
1689         *hptr = htemp;
1690
1691         return 0;
1692 }
1693
1694
1695 //
1696 // Add Symbol to the Unresolved Symbols Hash Table
1697 //
1698 add_unresolved(char * sym, struct OFILE * ofile)
1699 {
1700         if (vflag > 1)
1701                 printf("add_unresolved(%s,%s)\n", sym, ofile->o_name);
1702
1703         return add_to_hlist(&unresolved, sym, ofile, 0L, 0);
1704 }
1705
1706
1707 //
1708 // Generate and Return Hash Value
1709 //
1710 int dohash(char * s)
1711 {
1712         int i = (s[0]+s[1]+s[2]+s[3]+s[4]+s[5]+s[6]+s[7] +s[8]+s[9]+s[10]+s[11]+s[12]+s[13]+s[14]) % NBUCKETS;
1713         return i;
1714 }
1715
1716
1717 //
1718 // Lookup a Symbol in the Hash Table
1719 //
1720 struct HREC * lookup(char * sym)
1721 {
1722         struct HREC * hptr = htable[dohash(sym)];                // Hash index to record based on sym
1723         char symbol[SYMLEN];                                     // Temporary symbol storage
1724
1725         memset(symbol, 0, SYMLEN);                               // Clean string for comparison
1726         strcpy(symbol, sym);
1727
1728         while (hptr != NULL)
1729         {
1730 //This is utter failure...
1731 //              if (symcmp(symbol, hptr->h_sym))  <-- left here for giggles :D  - LinkoVitch
1732                 if (strcmp(symbol, hptr->h_sym) == 0)
1733                         return hptr;
1734
1735                 hptr = hptr->h_next;                                  // Return hash pointer if found
1736         }
1737
1738         return NULL;                                            // Not found in hash table
1739 }
1740
1741
1742 //
1743 // Add Symbol to the Hash Table
1744 //
1745 int hash_add(char * sym, long type, long value, struct OFILE * ofile)
1746 {
1747         struct HREC * hptr;
1748         int flag = !iscommon(type);
1749
1750         if (vflag > 1)
1751         {
1752                 printf("hash_add(%s,%s,%lx,", sym, ofile->o_name,value);
1753                 printf("%x,%s)\n", (unsigned int)type, (flag ? "GLOBAL" : "COMMON"));
1754         }
1755
1756         if ((hptr = lookup(sym)) == NULL)
1757         {
1758                 return add_to_hlist(&htable[dohash(sym)], sym, ofile, value, type);
1759         }
1760
1761
1762         // Already there!
1763         if (iscommon(type) && !iscommon(hptr->h_type))
1764         {
1765                 // Mismatch: global came first; warn and keep the global one
1766                 if (wflag)
1767                 {
1768                         printf("Warning: %s: global from ",sym);
1769                         put_name(hptr->h_ofile);
1770                         printf(" used, common from ");
1771                         put_name(ofile);
1772                         printf(" discarded.\n");
1773                 }
1774
1775                 putword(sym + 8, ABST_EXTERN);
1776                 putlong(sym + 10, 0L);
1777         }
1778         else if (iscommon(hptr->h_type) && !iscommon(type))
1779         {
1780                 // Mismatch: common came first; warn and keep the global one
1781                 if (wflag)
1782                 {
1783                         printf("Warning: %s: global from ", sym);
1784                         put_name(ofile);
1785                         printf(" used, common from ");
1786                         put_name(hptr->h_ofile);
1787                         printf(" discarded.\n");
1788                 }
1789
1790                 hptr->h_type = type;
1791                 hptr->h_ofile = ofile;
1792                 hptr->h_value = value;
1793         }
1794         else if (flag)
1795         {                                                        // They're both global
1796                 // Global exported by another ofile; warn and make this one extern
1797                 if (wflag)
1798                 {
1799                         printf("Duplicate symbol %s: ", sym);
1800                         put_name(hptr->h_ofile);
1801                         printf(" used, ");
1802                         put_name(ofile);
1803                         printf(" discarded\n");
1804                 }
1805
1806                 putword(sym + 8, ABST_EXTERN);
1807         }
1808         else
1809         {                                                                 // They're both common
1810                 if (hptr->h_value < value)
1811                 {
1812                         hptr->h_value = value;
1813                         hptr->h_ofile = ofile;
1814                 }
1815         }
1816
1817         return 0;
1818 }
1819
1820
1821 //
1822 // Add the imported symbols from this file to unresolved, and the global and
1823 // common symbols to the exported hash table.
1824 //
1825 // Change old-style commons (type == T_EXTERN, value != 0) to new-style ones
1826 // (type == (T_GLOBAL | T_EXTERN)).
1827 //
1828 int add_symbols(struct OFILE * Ofile)
1829 {
1830         long nsymbols;                                           // Number of symbols in object file
1831         char * ptr;                                              // Object data base pointer
1832         char * sfix;                                             // Symbol fixup table pointer
1833         char * sstr;                                             // Symbol string table pointer
1834         long index;                                              // String index
1835         long type;                                               // Symbol type
1836         long value;                                              // Symbol value
1837         struct HREC * hptr;                                      // Hash record pointer
1838         char symbol[SYMLEN];
1839
1840         if (vflag > 1)
1841                 printf("Add symbols for file %s\n", Ofile->o_name);
1842
1843         ptr = Ofile->o_image + 32                                // Get base pointer, start of sym fixups
1844                 + Ofile->o_header.tsize
1845                 + Ofile->o_header.dsize
1846                 + Ofile->o_header.absrel.reloc.tsize
1847                 + Ofile->o_header.absrel.reloc.dsize;
1848         sfix = ptr;                                              // Set symbol fixup pointer
1849         sstr = sfix + Ofile->o_header.ssize;                     // Set symbol table pointer
1850         nsymbols = Ofile->o_header.ssize / 12;                   // Obtain number of symbols
1851
1852         while (nsymbols)
1853         {
1854                 index = getlong(sfix);                                // Get symbol string index
1855                 type  = getlong(sfix + 4);                            // Get symbol type
1856                 value = getlong(sfix + 8);                            // Get symbol value
1857                 memset(symbol, 0, SYMLEN);
1858                 strcpy(symbol, sstr + index);
1859
1860                 // If this is a global/external
1861                 if (type & T_EXT)
1862                 {
1863                         if ((type - T_EXT))
1864                         {
1865                                 // Then add to hash table
1866                                 if (hash_add(symbol, type, value, Ofile))
1867                                 {
1868                                         return 1;                                   // Error if addition failed
1869                                 }
1870                         }
1871                         else
1872                         {
1873                                 // If value is zero and in hash table
1874                                 if ((hptr = lookup(symbol)) != NULL)
1875                                 {
1876                                         hptr->h_ofile->o_flags |= O_USED;            // Mark symbol as used
1877                                 }
1878                                 // Otherwise add to unresolved list
1879                                 else if (add_unresolved(symbol, Ofile))
1880                                 {
1881                                         return 1;                                   // Error if addition failed
1882                                 }
1883                         }
1884                 }
1885
1886                 sfix += 12;                                           // Increment symbol fixup pointer
1887                 nsymbols--;                                           // Decrement num of symbols to process
1888         }
1889
1890         return 0;                                               // Success loading symbols
1891 }
1892
1893
1894 //
1895 // Process Object File for Symbols
1896 //
1897 int doobj(char * fname, char * ptr, char * aname, int flags)
1898 {
1899         struct OFILE * Ofile;                                     // Object record pointer
1900         char * temp;                                              // Temporary data pointer
1901
1902         // Allocate memory for object record ptr
1903         if ((Ofile = new_ofile()) == NULL)
1904         {
1905                 printf("Out of memory processing %s\n",fname);
1906                 return 1;
1907         }
1908
1909         // Starting after all pathnames, etc., copy .o file name to Ofile
1910         temp = path_tail(fname);
1911
1912         // Check filename length
1913         if (strlen(temp) > FNLEN - 1)
1914         {
1915                 printf("File name too long: %s\n", temp);
1916                 return 1;
1917         }
1918
1919         // Check archive name length
1920         if (strlen(aname) > FNLEN - 1)
1921         {
1922                 printf("Archive name too long: %s\n", aname);
1923                 return 1;
1924         }
1925
1926         strcpy(Ofile->o_name, temp);                             // Store filename
1927         strcpy(Ofile->o_arname, aname);                          // Store archive name
1928
1929         Ofile->o_next  = NULL;                                   // Initialise object record information
1930         Ofile->o_tbase = 0;
1931         Ofile->o_dbase = 0;
1932         Ofile->o_bbase = 0;
1933         Ofile->o_flags = flags;
1934         Ofile->o_image = ptr;
1935
1936         // Don't do anything if this is just an ARCHIVE marker, just add the file to the olist
1937         if (!(flags & O_ARCHIVE))
1938         {
1939                 Ofile->o_header.magic = getlong(ptr);
1940                 Ofile->o_header.tsize = getlong(ptr+4);
1941                 Ofile->o_header.dsize = getlong(ptr+8);
1942                 Ofile->o_header.bsize = getlong(ptr+12);
1943                 Ofile->o_header.ssize = getlong(ptr+16);
1944                 Ofile->o_header.absrel.reloc.tsize = getlong(ptr+24);
1945                 Ofile->o_header.absrel.reloc.dsize = getlong(ptr+28);
1946
1947                 // Round BSS off to alignment boundary
1948                 Ofile->o_header.bsize = (Ofile->o_header.bsize + secalign) & ~secalign;
1949
1950                 if (Ofile->o_header.dsize & 7)
1951                 {
1952                         printf("Warning: data segment size of ");
1953                         put_name(Ofile);
1954                         printf(" is not a phrase multiple\n");
1955                 }
1956
1957                 // Check for odd segment sizes
1958                 if ((Ofile->o_header.tsize & 1) || (Ofile->o_header.dsize & 1)
1959                         || (Ofile->o_header.bsize & 1))
1960                 {
1961                         printf("Error: odd-sized segment in ");
1962                         put_name(Ofile);
1963                         printf("; link aborted.\n");
1964                         return 1;
1965                 }
1966
1967                 if (add_symbols(Ofile))
1968                         return 1;
1969         }
1970
1971         // Add this file to the olist
1972         if (olist == NULL)
1973                 olist = Ofile;
1974         else
1975                 olast->o_next = Ofile;
1976
1977         olast = Ofile;
1978         return 0;
1979 }
1980
1981
1982 //
1983 // Remove Elements from Unresolved List which are Resolvable
1984 //
1985 int dolist(void)
1986 {
1987         struct HREC * uptr;                                      // Unresolved hash record pointer
1988         struct HREC * prev = NULL;                               // Previous hash record pointer
1989         struct HREC * htemp;                                     // Temporary hash record pointer
1990         struct OFILE * ptemp;                                    // Temporary object file record pointer
1991
1992         // Process object file list
1993         while (plist != NULL)
1994         {
1995                 if (doobj(plist->o_name, plist->o_image, plist->o_arname, plist->o_flags))
1996                         return 1;
1997
1998                 ptemp = plist;
1999                 plist = plist->o_next;
2000                 free(ptemp);
2001         }
2002
2003         // Process unresolved list
2004         for(uptr=unresolved; uptr!=NULL; )
2005         {
2006                 if (vflag > 1)
2007                         printf("lookup(%s) => ",uptr->h_sym);
2008
2009                 if ((htemp = lookup(uptr->h_sym)) != NULL)
2010                 {
2011                         if (vflag > 1)
2012                                 printf(" %s in %s\n", isglobal(htemp->h_type) ? "global" : "common", htemp->h_ofile->o_name);
2013
2014                         htemp->h_ofile->o_flags |= O_USED;
2015
2016                         if (prev == NULL)
2017                         {
2018                                 unresolved = uptr->h_next;
2019                                 free(uptr);
2020                                 uptr = unresolved;
2021                         }
2022                         else
2023                         {
2024                                 prev->h_next = uptr->h_next;
2025                                 free(uptr);
2026                                 uptr = prev->h_next;
2027                         }
2028                 }
2029                 else
2030                 {
2031                         printf("NULL\n");
2032                         prev = uptr;
2033                         uptr = uptr->h_next;
2034                 }
2035         }
2036
2037         return 0;
2038 }
2039
2040
2041 //
2042 // Extract Filename from Path
2043 //
2044 char * path_tail(char * name)
2045 {
2046 //      char * temp = MAX(strrchr(name, '/'), MAX(strrchr(name, ':'), strrchr(name, '\\')));
2047         char * temp = strrchr(name, PATH_DELIMITER);
2048
2049         // Return what was passed in if path delimiter was not found
2050         if (temp == NULL)
2051                 return name;
2052
2053         return temp + 1;
2054 }
2055
2056
2057 //
2058 // Add Input File to Processing List
2059 //
2060 int pladd(char * ptr, char * fname)
2061 {
2062         if (plist == NULL)
2063         {
2064                 plist = new_ofile();                                    // First time object record allocation
2065                 plast = plist;                                                  // Update last object record pointer
2066         }
2067         else
2068         {
2069                 plast->o_next = new_ofile();                    // Next object record allocation
2070                 plast = plast->o_next;                                  // Update last object record pointer
2071         }
2072
2073         if (plast == NULL)
2074         {
2075                 printf("Out of memory.\n");                             // Error if memory allocation fails
2076                 return 1;
2077         }
2078
2079         if (strlen(path_tail(fname)) > FNLEN - 1)
2080         {                 // Error on excessive filename length
2081                 printf("File name too long: %s (sorry!)\n",fname);
2082                 return 1;
2083         }
2084
2085         strcpy(plast->o_name, path_tail(fname));        // Store filename, not path
2086         *plast->o_arname = 0;                                           // No archive name for this file
2087         plast->o_image = ptr;                                           // Store data pointer
2088         plast->o_flags = O_USED;                                        // File is used
2089         plast->o_next = NULL;                                           // Initialise next record pointer
2090
2091         return 0;                                                                       // Return without errors
2092 }
2093
2094
2095 //
2096 // Process in Binary Include Files and Add them to the Processing List. This
2097 // routine takes in the binary file and creates an 'object' file in memory.
2098 // Sym1/Sym2 point to the start and end of data.
2099 //
2100 // Image size for include files is:
2101 // Header ....... 32 bytes
2102 // Data ......... dsize
2103 // Sym Fixups ... 2 * 12 bytes
2104 // Symbol Size .. 4 bytes (Value to include symbols and terminating null)
2105 // Symbols ...... (strlen(sym1) + 1) + (strlen(sym2) + 1)
2106 // Terminate .... 4 bytes (0x00000000)
2107 //
2108 int doinclude(char * fname, int handle, char * sym1, char * sym2, int segment)
2109 {
2110         long fsize, dsize, size;                                 // File, DATA segment and image sizes
2111         char * ptr, * sptr;                                      // Data pointers
2112         int i;                                                   // Iterators
2113         int sym1len = 0;                                         // Symbol 1 length
2114         int sym2len = 0;                                         // Symbol 2 length
2115         unsigned symtype = 0;
2116
2117         fsize = FSIZE(handle);                                   // Get size of include file
2118         dsize = (fsize + secalign) & ~secalign;                   // Round up to a alignment boundary
2119
2120         sym1len = strlen(sym1) + 1;                              // Get sym1 length + null termination
2121         sym2len = strlen(sym2) + 1;                              // Get sym2 length + null termination
2122
2123         size = 32 + dsize + 24 + 4 + sym1len + sym2len + 4;
2124
2125         // Use calloc so the header & fixups initialize to zero
2126         // Allocate object image memory
2127         if ((ptr = calloc(size, 1L)) == NULL)
2128         {
2129                 printf("Out of memory while including %s\n", fname);
2130                 close(handle);
2131                 return 1;
2132         }
2133
2134         // Read in binary data
2135         if (read(handle, ptr + 32, fsize) != fsize)
2136         {
2137                 printf("File read error on %s\n", fname);
2138                 close(handle);
2139                 free(ptr);
2140                 return 1;
2141         }
2142
2143         close(handle);                                           // Close file
2144
2145         strcpy(obj_fname[obj_index], path_tail(fname));
2146
2147         // Build this image's dummy header
2148         putlong(ptr, 0x00000107);                                // Magic number
2149
2150         if (segment)
2151         {
2152                 putlong(ptr+4, dsize);                                // Text size
2153                 putlong(ptr+8, 0L);                                   // Data size
2154                 symtype = 0x05000000;
2155                 obj_segsize[obj_index][0] = dsize;
2156                 obj_segsize[obj_index][1] = 0;
2157                 obj_segsize[obj_index][2] = 0;
2158         }
2159         else
2160         {
2161                 putlong(ptr+4, 0L);                                   // Text size
2162                 putlong(ptr+8, dsize);                                // Data size
2163                 symtype = 0x07000000;
2164                 obj_segsize[obj_index][0] = 0;
2165                 obj_segsize[obj_index][1] = dsize;
2166                 obj_segsize[obj_index][2] = 0;
2167         }
2168
2169         obj_index++;                                             // Increment object count
2170
2171         putlong(ptr+12, 0L);                                     // BSS size
2172         putlong(ptr+16, 24);                                     // Symbol table size
2173         putlong(ptr+20, 0L);                                     // Entry point
2174         putlong(ptr+24, 0L);                                     // TEXT relocation size
2175         putlong(ptr+28, 0L);                                     // DATA relocation size
2176
2177         sptr = ptr + 32 + dsize;                                 // Set sptr to symbol table location
2178
2179         putlong(sptr,    4L);                                    // String offset of symbol1
2180         putlong(sptr+4,  symtype);                               // Symbol type
2181         putlong(sptr+8,  0x00000000);                            // Symbol has no value (START)
2182         putlong(sptr+12, 4L + (sym2len-1));                      // String offset of symbol2
2183         putlong(sptr+16, symtype);                               // Symbol type
2184         putlong(sptr+20, dsize);                                 // Symbol is data size (END)
2185
2186         sptr = ptr + 32 + dsize + 24;                            // Set sptr to symbol table size loc
2187
2188         putlong(sptr, sym1len + 4L);                             // Size of symbol table
2189
2190         sptr = ptr + 32 + dsize + 24 + 4;                        // Set sptr to symbol table location
2191
2192         for(i=0; i<(sym1len-1); i++)                             // Write symbol1 to string table
2193                 sptr[i] = *sym1++;
2194
2195         sptr += (sym1len-1);                                     // Step past symbol string
2196         *sptr = '\0';                                            // Terminate symbol string
2197         sptr += 1;                                               // Step past termination
2198
2199         for(i=0; i<(sym2len-1); i++)                             // Write symbol2 to string table
2200                 sptr[i] = *sym2++;
2201
2202         sptr += (sym2len-1);                                     // Step past symbol string
2203         *sptr = '\0';                                            // Terminate symbol string
2204         sptr += 1;                                               // Step past termination
2205
2206         putlong(sptr, 0L);                                       // Terminating long for object file
2207
2208         return pladd(ptr, fname);
2209 }
2210
2211
2212 //
2213 // Takes a file name, gets in its image, puts it on plist. The image may
2214 // already be in memory: If so, the ptr arg is non-null.  If so, the file is
2215 // already closed. Note that the file is already open (from dofile()). RETURNS
2216 // a pointer to the OFILE structure for this file, so you can diddle its flags
2217 // (dofile sets O_USED for files on the command line).
2218 //
2219 int doobject(char * fname, int fd, char * ptr)
2220 {
2221         long size;                                               // File size
2222
2223         if (ptr == NULL)
2224         {
2225                 size = FSIZE(fd);                                     // Get size of input object file
2226
2227                 // Allocate memory for file data
2228                 if ((ptr = malloc(size)) == NULL)
2229                 {
2230                         printf("Out of memory while processing %s\n", fname);
2231                         close(fd);                                         // Close and error
2232                         return 1;
2233                 }
2234
2235                 // Read in file data
2236                 if (read(fd, ptr, size) != size)
2237                 {
2238                         printf("File read error on %s\n", fname);
2239                         close(fd);                                         // Close, free memory and error
2240                         free(ptr);
2241                         return 1;
2242                 }
2243
2244                 strcpy(obj_fname[obj_index], path_tail(fname));         // SCPCD : get the name of the file instead of all pathname
2245                 obj_segsize[obj_index][0] = (getlong(ptr + 4) + secalign) & ~secalign;
2246                 obj_segsize[obj_index][1] = (getlong(ptr + 8) + secalign) & ~secalign;
2247                 obj_segsize[obj_index][2] = (getlong(ptr + 12) + secalign) & ~secalign;
2248                 obj_index++;
2249
2250                 close(fd);                                            // Close file
2251         }
2252
2253         // Now add this image to the list of pending ofiles (plist)
2254         // This routine is shared by doinclude after it builds the image
2255         return pladd(ptr, fname);
2256 }
2257
2258
2259 //
2260 // Process In Outstanding Object Files
2261 //
2262 int flush_handles(void)
2263 {
2264         int i;                                                   // Iterator
2265         char magic[4];                                           // Magic header number
2266         //  unsigned test;
2267
2268         // Process all handles
2269         for(i=0; i<(int)hd; i++)
2270         {
2271                 // Verbose mode information
2272                 if (vflag == 1)
2273                 {
2274                         printf("Read file %s%s\n", name[i], hflag[i] ? " (include)" : "");
2275                 }
2276
2277                 if (!hflag[i])
2278                 {                                       // Attempt to read file magic number
2279                         // OBJECT FILES
2280                         if (read(handle[i],magic,4) != 4)
2281                         {
2282                                 printf("Error reading file %s\n", name[i]);
2283                                 close(handle[i]);                               // Close file and error
2284                                 return 1;
2285                         }
2286
2287                         lseek(handle[i], 0L, 0);                           // Reset to start of input file
2288         //              test = getlong(magic); printf("Magic Number is 0x%08X\n", test);
2289
2290                         if (getlong(magic) == 0x00000107)
2291                         {                 // Look for SMAC/MAC object files
2292                                 if (doobject(name[i], handle[i], 0L))            // Process input object file
2293                                         return 1;
2294                         }
2295                         else
2296                         {
2297                                 printf("%s is not a supported object file\n", name[i]);
2298                                 close(handle[i]);                               // Close file and error
2299                                 return 1;
2300                         }
2301                 }
2302                 else
2303                 {
2304                         // INCLUDE FILES
2305                         // If hflag[i] is 1, include this in the data segment; if 2, put in in text segment
2306                         if (doinclude(name[i], handle[i], hsym1[i], hsym2[i], hflag[i] - 1))
2307                                 return 1;
2308                 }
2309         }
2310
2311         // Free include, symbol & object handles
2312         for(i=0; i<(int)hd; i++)
2313         {
2314                 free(name[i]);
2315
2316                 if (hflag[i])
2317                 {
2318                         free(hsym1[i]);
2319                         free(hsym2[i]);
2320                 }
2321         }
2322
2323         hd = 0;                                                  // Reset next handle indicator
2324         return 0;                                               // Return
2325 }
2326
2327
2328 //
2329 // Load newargv with Pointers to Arguments Found in the Buffer
2330 //
2331 int parse(char * buf, char * newargv[])
2332 {
2333         int i = 1;
2334
2335         if (vflag)
2336                 printf("begin parsing\n");
2337
2338         while (1)
2339         {
2340                 while (*buf && strchr(",\t\n\r\14 ", *buf))
2341                         buf++;
2342
2343                 /* test for eof */
2344                 if (*buf == '\0' || *buf == 26)
2345                 {
2346                         if (i == 0)
2347                         {
2348                                 printf("No commands in command file\n");
2349                                 return -1;
2350                         }
2351                         else
2352                         {
2353                                 return i;
2354                         }
2355                 }
2356
2357                 /* test for comment */
2358                 if (*buf == '#')
2359                 {
2360                         /* found a comment; skip to next \n and start over */
2361                         while (*buf && *buf != '\n')
2362                                 buf++;
2363
2364                         continue;
2365                 }
2366
2367                 if (i == MAXARGS)
2368                 {
2369                         printf("Too many arguments in command file\n");
2370                         return -1;
2371                 }
2372
2373                 newargv[i] = buf;
2374
2375                 while (!strchr(",\t\n\r\14 ", *buf))
2376                 {
2377                         if (*buf == '\0' || *buf == 26)
2378                         {
2379                                 printf("Finished parsing %d args\n", i);
2380                                 return i;
2381                         }
2382
2383                         buf++;
2384                 }
2385
2386                 *buf++ = '\0';
2387
2388                 if (vflag)
2389                         printf("argv[%d] = \"%s\"\n", i, newargv[i]);
2390
2391                 i++;
2392         }
2393 }
2394
2395
2396 //
2397 // Process in a Link Command File
2398 //
2399 int docmdfile(char * fname)
2400 {
2401         int fd;                                     // File descriptor
2402         unsigned size;                              // Command file size
2403         char * ptr;                                 // Pointer
2404         int newargc;                                // New argument count
2405         char * (*newargv)[];                        // New argument value array
2406
2407         // Verbose information
2408         if (vflag > 1)
2409                 printf("docmdfile(%s)\n", fname);
2410
2411         // Allocate memory for new argument values
2412         newargv = malloc((long)(sizeof(char *) * MAXARGS));
2413
2414         if (!newargv)
2415         {
2416                 printf("Out of memory.\n");
2417                 return 1;
2418         }
2419
2420         // Attempt to open and read in the command file
2421         if (fname)
2422         {
2423                 if ((fd = open(fname, _OPEN_FLAGS)) < 0)
2424                 {
2425                         printf("Cannot open command file %s.\n", fname);
2426                         return 1;
2427                 }
2428
2429                 size = FSIZE(fd);
2430
2431                 if ((ptr = malloc(size + 1)) == NULL)
2432                 {
2433                         printf("Out of memory.\n");
2434                         close(fd);
2435                         return 1;
2436                 }
2437
2438                 if (read(fd, ptr, size) != (int)size)
2439                 {
2440                         printf("Read error on command file %s.\n", fname);
2441                         close(fd);
2442                         return 1;
2443                 }
2444
2445                 *(ptr + size) = 0;                      // Null terminate the buffer
2446                 close(fd);
2447         }
2448         else
2449         {
2450                 printf("No command filename specified\n");
2451                 return 1;
2452         }
2453
2454         // Parse the command file
2455         if ((newargc = parse(ptr, *newargv)) == -1)
2456         {
2457                 return 1;
2458         }
2459
2460         // Process the inputted flags
2461         if (doargs(newargc, *newargv))
2462         {
2463                 printf("docmdfile: doargs returns TRUE\n");
2464                 return 1;
2465         }
2466
2467         free(ptr);
2468         free(newargv);
2469
2470         return 0;
2471 }
2472
2473
2474 //
2475 // Take an Argument List and Parse the Command Line
2476 //
2477 int doargs(int argc, char * argv[])
2478 {
2479         int i = 1;                                               // Iterator
2480         int c;                                                   // Command line character
2481         char * ifile, * isym;                                    // File name and symbol name for -i
2482
2483         while (i < argc)
2484         {                                        // Parse through option switches & files
2485                 if (argv[i][0] == '-')
2486                 {                               // Process command line switches
2487                         if (!argv[i][1])
2488                         {
2489                                 printf("Illegal option argument: %s\n\n", argv[i]);
2490                                 display_help();
2491                                 return 1;
2492                         }
2493
2494                         c = argv[i++][1];                                  // Get next character in command line
2495
2496                         switch (c)
2497                         {                                        // Process command line switch
2498                         case '?':                                       // Display usage information
2499                         case 'h':
2500                         case 'H':
2501                                 display_version();
2502                                 display_help();
2503                                 return 1;
2504                         case 'a':
2505                         case 'A':                                  // Set absolute linking on
2506                                 if (aflag)
2507                                         warn('a', 1);
2508
2509                                 if (i + 2 >= argc)
2510                                 {
2511                                         printf("Not enough arguments to -a\n");
2512                                         return 1;
2513                                 }
2514
2515                                 aflag = 1;                                   // Set abs link flag
2516                                 // Segment order is TEXT, DATA, BSS
2517                                 // Text segment can be 'r', 'x' or a value
2518                                 ttype = 0;
2519
2520                                 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2521                                 {
2522                                         ttype = -1;                               // TEXT segment is relocatable
2523                                 }
2524                                 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2525                                 {
2526                                         printf("Error in text-segment address: cannot be contiguous\n");
2527                                         return 1;
2528                                 }
2529                                 else if ((ttype = 0), getval(argv[i], &tval))
2530                                 {
2531                                         printf("Error in text-segment address: %s is not 'r', 'x' or an address.", argv[i]);
2532                                         return 1;
2533                                 }
2534
2535                                 i++;
2536                                 // Data segment can be 'r', 'x' or a value
2537                                 dtype = 0;
2538
2539                                 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2540                                 {
2541                                         dtype = -1;                               // DATA segment is relocatable
2542                                 }
2543                                 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2544                                 {
2545                                         dtype = -2;                               // DATA follows TEXT
2546                                 }
2547                                 else if ((dtype = 0), getval(argv[i],&dval))
2548                                 {
2549                                         printf("Error in data-segment address: %s is not 'r', 'x' or an address.", argv[i]);
2550                                         return 1;
2551                                 }
2552
2553                                 i++;
2554                                 btype = 0;
2555
2556                                 // BSS segment can be 'r', 'x' or a value
2557                                 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2558                                 {
2559                                         btype = -1;                               // BSS segment is relocatable
2560                                 }
2561                                 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2562                                 {
2563                                         btype = -3;                               // BSS follows DATA
2564                                 }
2565                                 else if ((btype = 0), getval(argv[i],&bval))
2566                                 {
2567                                         printf("Error in bss-segment address: %s is not 'r', 'x[td]', or an address.", argv[i]);
2568                                         return 1;
2569                                 }
2570
2571                                 i++;
2572                                 break;
2573                         case 'b':
2574                         case 'B':                                  // Don't remove muliply defined locals
2575                                 if (bflag)
2576                                         warn('b', 1);
2577
2578                                 bflag = 1;
2579                                 break;
2580                         case 'c':
2581                         case 'C':                             // Process a command file
2582                                 if (i == argc)
2583                                 {
2584                                         printf("Not enough arguments to -c\n");
2585                                         return 1;
2586                                 }
2587
2588                                 if (docmdfile(argv[i++]))
2589                                 {
2590                                         return 1;
2591                                 }
2592
2593                                 break;
2594                         case 'd':
2595                         case 'D':                                  // Wait for "return" before exiting
2596                                 if (dflag)
2597                                         warn('d', 0);
2598
2599                                 dflag = 1;
2600                                 waitflag = 1;
2601                                 break;
2602                         case 'e':
2603                         case 'E':                             // Output COFF (absolute only)
2604                                 cflag = 1;
2605                                 break;
2606                         case 'g':
2607                         case 'G':                             // Output source level debugging
2608                                 printf("\'g\' flag not currently implemented\n");
2609                                 gflag = 0;
2610                                 /*
2611                                 if (gflag) warn('g', 1);
2612                                 gflag = 1;
2613                                 */
2614                                 break;
2615                         case 'i':
2616                         case 'I':                             // Include binary file
2617                                 if (i + 2 > argc)
2618                                 {
2619                                         printf("Not enough arguments to -i\n");
2620                                         return 1;
2621                                 }
2622
2623                                 ifile = argv[i++];
2624                                 isym = argv[i++];
2625
2626                                 if ((argv[i-3][2] == 'i') || (argv[i-3][2] == 'I'))
2627                                 {   // handle -ii (No truncation)
2628                                         if (!cflag)
2629                                                 printf("warning: (-ii) COFF format output not specified\n");
2630                                 }
2631                                 else
2632                                 {                                     // handle -i (Truncation)
2633                                         if (strlen(isym) > 7)
2634                                                 isym[7] = '\0';
2635                                 }
2636
2637                                 // Place include files in the DATA segment only
2638                                 if (dofile(ifile, DSTSEG_D, isym))
2639                                         return 1;
2640
2641                                 break;
2642                         case 'l':
2643                         case 'L':                             // Add local symbols
2644                                 if (lflag)
2645                                         warn('l', 1);
2646
2647                                 lflag = 1;
2648                                 break;
2649                         case 'm':
2650                         case 'M':                             // Produce load symbol map
2651                                 if (mflag)
2652                                         warn('m', 1);
2653
2654                                 mflag = 1;
2655                                 break;
2656                         case 'n':
2657                         case 'N':                             // Output no header to .abs file
2658                                 if (noheaderflag)
2659                                         warn('n', 1);
2660
2661                                 noheaderflag = 1;
2662                                 break;
2663                         case 'o':
2664                         case 'O':                                  // Specify an output file
2665                                 if (oflag)
2666                                         warn('o', 1);
2667
2668                                 oflag = 1;
2669
2670                                 if (i >= argc)
2671                                 {
2672                                         printf("No output filename following -o switch\n");
2673                                         return 1;
2674                                 }
2675
2676                                 if (strlen(argv[i]) > FARGSIZE - 5)
2677                                 {
2678                                         printf("Output file name too long (sorry!)\n");
2679                                         return 1;
2680                                 }
2681
2682                                 strcpy(ofile, argv[i++]);
2683                                 break;
2684                         case 'r':
2685                         case 'R':                             // Section alignment size
2686                                 if (rflag)
2687                                         warn('r', 1);
2688
2689                                 rflag = 1;
2690
2691                                 switch (argv[i-1][2])
2692                                 {
2693                                         case 'w': case 'W': secalign = 1;  break; // Word alignment
2694                                         case 'l': case 'L': secalign = 3;  break; // Long alignment
2695                                         case 'p': case 'P': secalign = 7;  break; // Phrase alignment
2696                                         case 'd': case 'D': secalign = 15; break; // Double phrase alignment
2697                                         case 'q': case 'Q': secalign = 31; break; // Quad phrase alignment
2698                                         default:            secalign = 7;  break; // Default phrase alignment
2699                                 }
2700
2701                                 break;
2702                         case 's':
2703                         case 'S':                             // Output only global symbols
2704                                 if (sflag)
2705                                         warn('s', 1);
2706
2707                                 sflag = 1;
2708                                 break;
2709                         case 'v':
2710                         case 'V':                                  // Verbose information
2711                                 if (!vflag && !versflag)
2712                                 {
2713                                         display_version();
2714                                 }
2715
2716                                 vflag++;
2717                                 break;
2718                         case 'w':
2719                         case 'W':                                  // Show warnings flag
2720                                 if (wflag)
2721                                         warn('w', 1);
2722
2723                                 wflag = 1;
2724                                 break;
2725                         case 'z':
2726                         case 'Z':                                  // Suppress banner flag
2727                                 if (zflag)
2728                                         warn('z', 1);
2729
2730                                 zflag = 1;
2731                                 break;
2732                         default:
2733                                 printf("unknown option argument `%c'\n", c);
2734                                 return 1;
2735                         }
2736                 }
2737                 else
2738                 {                                              // Not a switch, then process as a file
2739                         if (dofile(argv[i++], 0, NULL))
2740                                 return 1;
2741                 }
2742
2743         }
2744
2745         if (!oflag && vflag)
2746         {
2747                 strcpy(ofile, "output");
2748                 printf("Output file is %s[.ext]\n", ofile);
2749         }
2750
2751         if (oflag && vflag)
2752                 printf("Output file is %s\n", ofile);
2753
2754         if (sflag)
2755                 lflag = 0;
2756
2757         return 0;                                               // No problems encountered
2758 }
2759
2760
2761 //
2762 // Display Version Information
2763 //
2764 void display_version(void)
2765 {
2766         if (displaybanner)// && vflag)
2767         {
2768                 printf("\nReboot's Linker for Atari Jaguar\n");
2769                 printf("Copyright (c) 199x Allan K. Pratt, 2011 Reboot\n");
2770                 printf("V%i.%i.%i %s (%s)\n\n", MAJOR, MINOR, PATCH, __DATE__, PLATFORM);
2771         }
2772 }
2773
2774
2775 //
2776 // Display Command Line Help
2777 //
2778 void display_help(void)
2779 {
2780         printf("Usage:\n");
2781         printf("    %s [-options] file(s)\n", cmdlnexec);
2782         printf("\n");
2783         printf("Options:\n");
2784         printf("   -? or -h                display usage information\n");
2785         printf("   -a <text> <data> <bss>  output absolute file\n");
2786         printf("                           hex value: segment address\n");
2787         printf("                           r: relocatable segment\n");
2788         printf("                           x: contiguous segment\n");
2789         printf("   -b                      don't remove multiply defined local labels\n");
2790         printf("   -c <fname>              add contents of <fname> to command line\n");
2791         printf("   -d                      wait for key after link\n");
2792         printf("   -e                      output COF absolute file\n");
2793         printf("   -g                      output source-level debugging\n");
2794         printf("   -i <fname> <label>      incbin <fname> and set <label>\n");
2795         printf("   -l                      add local symbols\n");
2796         printf("   -m                      produce load symbols map\n");
2797         printf("   -n                      output no file header to .abs file\n");
2798         printf("   -o <fname>              set output name\n");
2799         printf("   -r<size>                section alignment size\n");
2800         printf("                           w: word (2 bytes)\n");
2801         printf("                           l: long (4 bytes)\n");
2802         printf("                           p: phrase (8 bytes, default alignment)\n");
2803         printf("                           d: double phrase (16 bytes)\n");
2804         printf("                           q: quad phrase (32 bytes)\n");
2805         printf("   -s                      output only global symbols\n");
2806         printf("   -v                      set verbose mode\n");
2807         printf("   -w                      show linker warnings\n");
2808         printf("   -z                      suppress banner\n");
2809         printf("\n");
2810 }
2811
2812
2813 //
2814 // Application Exit
2815 //
2816 void rln_exit(void)
2817 {
2818         char tempbuf[128];
2819
2820         // Display link status if verbose mode
2821         if (vflag)
2822                 printf("Link %s.\n", errflag ? "aborted" : "complete");
2823
2824         // Wait for return key if requested
2825         if (waitflag)
2826         {
2827                 printf("\nPress the [RETURN] key to continue. ");
2828                 fgets(tempbuf, 128, stdin);
2829         }
2830
2831         exit(errflag);
2832 }
2833
2834
2835 //
2836 // Determine Processor Endianess
2837 //
2838 int get_endianess(void)
2839 {
2840         int i = 1;
2841         char * p = (char *)&i;
2842
2843         if (p[0] == 1)
2844                 return ENDIANNESS_LITTLE;
2845
2846         return ENDIANNESS_BIG;
2847 }
2848
2849
2850 //
2851 // Application Code Starts Here
2852 //
2853 int main(int argc, char * argv[])
2854 {
2855         char * s = NULL;                            // String pointer for "getenv"
2856         struct HREC * utemp;                        // Temporary hash record pointer
2857         struct OHEADER * header;                    // Pointer to output header structure
2858
2859         endian = get_endianess();                   // Get processor endianess
2860         cmdlnexec = argv[0];                        // Obtain executable name
2861         s = getenv("RLNPATH");
2862
2863         if (s)                                      // Attempt to obtain env variable
2864                 strcpy(libdir, s);                      // Store it if found
2865
2866         // Parse the command line
2867         if (doargs(argc, argv))
2868         {
2869                 errflag = 1;
2870                 rln_exit();
2871         }
2872
2873         if (!zflag && !vflag)
2874         {
2875                 display_version();                      // Display version information
2876                 versflag = 1;                           // We've dumped the version banner
2877         }
2878
2879         // Process in specified files/objects
2880         if (flush_handles())
2881         {
2882                 errflag = 1;
2883                 rln_exit();
2884         }
2885
2886         // Remove elements from unresolved list
2887         if (dolist())
2888         {
2889                 errflag = 1;
2890                 rln_exit();
2891         }
2892
2893         // Check that there is something to link
2894         if (olist == NULL)
2895         {
2896 //              printf("No object files to link.\n\n");
2897 //              errflag = 1;
2898                 display_help();
2899                 rln_exit();
2900         }
2901
2902         // Report unresolved externals
2903         if (unresolved != NULL)
2904         {
2905                 printf("UNRESOLVED SYMBOLS\n");
2906
2907                 // Don't list them if two -u's or more
2908                 if (uflag < 2)
2909                 {
2910                         utemp = unresolved;
2911
2912                         while (utemp != NULL)
2913                         {
2914                                 printf("\t%s (",utemp->h_sym);
2915                                 put_name(utemp->h_ofile);
2916                                 printf(")\n");
2917                                 utemp = utemp->h_next;
2918                         }
2919                 }
2920
2921                 if (!uflag)
2922                 {
2923                         errflag = 1;
2924                         rln_exit();
2925                 }
2926         }
2927
2928         // Make one output file from input objs
2929         if ((header = make_ofile()) == NULL)
2930         {
2931                 errflag = 1;
2932                 rln_exit();
2933         }
2934
2935         // Partial linking
2936         if (pflag)
2937         {
2938                 printf("TO DO:Partial linking\n");
2939                 errflag = 1;
2940         }
2941         // Relocatable linking
2942         else if (!aflag)
2943         {
2944                 printf("TO DO:Relocatable linking\n");
2945                 errflag = 1;
2946         }
2947         // Absolute linking
2948         else
2949         {
2950                 if (vflag)
2951                 {
2952                         printf("Absolute linking ");
2953
2954                         if (cflag)
2955                                 printf("(COF)\n");
2956                         else
2957                                 printf("(ABS)\n");
2958                 }
2959
2960                 if (vflag > 1)
2961                         printf("Header magic is 0x%04X\n", (unsigned int)header->magic);
2962
2963                 if (write_ofile(header))
2964                         errflag = 1;
2965         }
2966
2967         if (mflag)                                  // Display the loaded symbols map
2968                 if (write_map(header))
2969                         errflag = 1;
2970
2971         // Display segment size summary
2972         if (vflag)
2973         {
2974                 printf("\n");
2975                 printf("+---------+----------+----------+----------+\n");
2976                 printf("| Segment |     TEXT |     DATA |      BSS |\n");
2977                 printf("| Sizes   |----------+----------+----------|\n");
2978                 printf("| (Hex)   | %8X | %8X | %8X |\n", (unsigned int)header->tsize, (unsigned int)header->dsize, (unsigned int)header->bsize);
2979                 printf("+---------+----------+----------+----------+\n\n");
2980         }
2981
2982 //printf("BIG_ENDIAN = %i, LITTLE_ENDIAN = %i\n", BIG_ENDIAN, LITTLE_ENDIAN);
2983
2984         free(header);                               // Free allocated memory
2985         rln_exit();                                 // Perform application exit
2986 }