Shamusworld >> Repos - rmac/blob - token.c

   1 //
   2 // RMAC - Reboot's Macro Assembler for the Atari Jaguar Console System
   3 // TOKEN.C - Token Handling
   4 // Copyright (C) 199x Landon Dyer, 2011-2012 Reboot and Friends
   5 // RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
   6 // Source utilised with the kind permission of Landon Dyer
   7 //
   8
   9 #include "token.h"
  10 #include "error.h"
  11 #include "macro.h"
  12 #include "procln.h"
  13 #include "symbol.h"
  14
  15 #define DECL_KW                         // Declare keyword arrays
  16 #define DEF_KW                          // Declare keyword values
  17 #include "kwtab.h"                      // Incl generated keyword tables & defs
  18
  19
  20 int lnsave;                                     // 1; strcpy() text of current line
  21 int curlineno;                          // Current line number
  22 int totlines;                           // Total # of lines
  23 int mjump_align = 0;            // mjump alignment flag
  24 char lntag;                                     // Line tag
  25 char * curfname;                        // Current filename
  26 char tolowertab[128];           // Uppercase ==> lowercase
  27 char hextab[128];                       // Table of hex values
  28 char dotxtab[128];                      // Table for ".b", ".s", etc.
  29 char irbuf[LNSIZ];                      // Text for .rept block line
  30 char lnbuf[LNSIZ];                      // Text of current line
  31 WORD filecount;                         // Unique file number counter
  32 WORD cfileno;                           // Current file number
  33 TOKEN * tok;                            // Ptr to current token
  34 TOKEN * etok;                           // Ptr past last token in tokbuf[]
  35 TOKEN tokeol[1] = {EOL};        // Bailout end-of-line token
  36 char * string[TOKBUFSIZE*2];    // Token buffer string pointer storage
  37
  38 // File record, used to maintain a list of every include file ever visited
  39 #define FILEREC struct _filerec
  40 FILEREC
  41 {
  42    FILEREC * frec_next;
  43    char * frec_name;
  44 };
  45
  46 FILEREC * filerec;
  47 FILEREC * last_fr;
  48
  49 INOBJ * cur_inobj;                                              // Ptr current input obj (IFILE/IMACRO)
  50 static INOBJ * f_inobj;                                 // Ptr list of free INOBJs
  51 static IFILE * f_ifile;                                 // Ptr list of free IFILEs
  52 static IMACRO * f_imacro;                               // Ptr list of free IMACROs
  53
  54 static TOKEN tokbuf[TOKBUFSIZE];                // Token buffer (stack-like, all files)
  55
  56 char chrtab[] = {
  57         ILLEG, ILLEG, ILLEG, ILLEG,                     // NUL SOH STX ETX
  58         ILLEG, ILLEG, ILLEG, ILLEG,                     // EOT ENQ ACK BEL
  59         ILLEG, WHITE, ILLEG, ILLEG,                     // BS HT LF VT
  60         WHITE, ILLEG, ILLEG, ILLEG,                     // FF CR SO SI
  61
  62         ILLEG, ILLEG, ILLEG, ILLEG,                     // DLE DC1 DC2 DC3
  63         ILLEG, ILLEG, ILLEG, ILLEG,                     // DC4 NAK SYN ETB
  64         ILLEG, ILLEG, ILLEG, ILLEG,                     // CAN EM SUB ESC
  65         ILLEG, ILLEG, ILLEG, ILLEG,                     // FS GS RS US
  66
  67         WHITE, MULTX, MULTX, SELF,                      // SP ! " #
  68         MULTX+CTSYM, MULTX, SELF, MULTX,        // $ % & '
  69         SELF, SELF, SELF, SELF,                         // ( ) * +
  70         SELF, SELF, STSYM, SELF,                        // , - . /
  71
  72         DIGIT+HDIGIT+CTSYM, DIGIT+HDIGIT+CTSYM,         // 0 1
  73         DIGIT+HDIGIT+CTSYM, DIGIT+HDIGIT+CTSYM,         // 2 3
  74         DIGIT+HDIGIT+CTSYM, DIGIT+HDIGIT+CTSYM,         // 4 5
  75         DIGIT+HDIGIT+CTSYM, DIGIT+HDIGIT+CTSYM,         // 6 7
  76         DIGIT+HDIGIT+CTSYM, DIGIT+HDIGIT+CTSYM,         // 8 9
  77         MULTX, MULTX,                                                           // : ;
  78         MULTX, MULTX, MULTX, STSYM+CTSYM,                       // < = > ?
  79
  80         MULTX, STSYM+CTSYM+HDIGIT,                                                                      // @ A
  81         (char)((BYTE)DOT)+STSYM+CTSYM+HDIGIT, STSYM+CTSYM+HDIGIT,       // B C
  82         STSYM+CTSYM+HDIGIT, STSYM+CTSYM+HDIGIT,                                         // D E
  83         STSYM+CTSYM+HDIGIT, STSYM+CTSYM,                                                        // F G
  84         STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM,                     // H I J K
  85         (char)((BYTE)DOT)+STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM,   // L M N O
  86
  87         STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, (char)((BYTE)DOT)+STSYM+CTSYM,   // P Q R S
  88         STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, (char)((BYTE)DOT)+STSYM+CTSYM,   // T U V W
  89         STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, SELF,                            // X Y Z [
  90         SELF, SELF, MULTX, STSYM+CTSYM,                                                         // \ ] ^ _
  91
  92         ILLEG, STSYM+CTSYM+HDIGIT,                                                                      // ` a
  93         (char)((BYTE)DOT)+STSYM+CTSYM+HDIGIT, STSYM+CTSYM+HDIGIT,       // b c
  94         STSYM+CTSYM+HDIGIT, STSYM+CTSYM+HDIGIT,                                         // d e
  95         STSYM+CTSYM+HDIGIT, STSYM+CTSYM,                                                        // f g
  96         STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM,                     // h i j k
  97         (char)((BYTE)DOT)+STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM,   // l m n o
  98
  99         STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, (char)((BYTE)DOT)+STSYM+CTSYM,   // p q r s
 100         STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, (char)((BYTE)DOT)+STSYM+CTSYM,   // t u v w
 101         STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, SELF,                            // x y z {
 102         SELF, SELF, SELF, ILLEG                                                                         // | } ~ DEL
 103 };
 104
 105 // Names of registers
 106 static char * regname[] = {
 107         "d0", "d1",  "d2",  "d3", "d4", "d5", "d6", "d7",
 108         "a0", "a1",  "a2",  "a3", "a4", "a5", "a6", "a7",
 109         "pc", "ssp", "usp", "sr", "ccr"
 110 };
 111
 112 static char * riscregname[] = {
 113          "r0",  "r1",  "r2",  "r3",  "r4", "r5",   "r6",  "r7",
 114          "r8",  "r9", "r10", "r11", "r12", "r13", "r14", "r15",
 115         "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
 116         "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31"
 117 };
 118
 119
 120 //
 121 // Initialize tokenizer
 122 //
 123 void InitTokenizer(void)
 124 {
 125         int i;                                                                  // Iterator
 126         char * htab = "0123456789abcdefABCDEF"; // Hex character table
 127
 128         lnsave = 0;                                                             // Don't save lines
 129         curfname = "";                                                  // No file, empty filename
 130         filecount = (WORD)-1;
 131         cfileno = (WORD)-1;                                             // cfileno gets bumped to 0
 132         curlineno = 0;
 133         totlines = 0;
 134         etok = tokbuf;
 135         f_inobj = NULL;
 136         f_ifile = NULL;
 137         f_imacro = NULL;
 138         cur_inobj = NULL;
 139         filerec = NULL;
 140         last_fr = NULL;
 141         lntag = SPACE;
 142
 143         // Initialize hex, "dot" and tolower tables
 144         for(i=0; i<128; i++)
 145         {
 146                 hextab[i] = -1;
 147                 dotxtab[i] = 0;
 148                 tolowertab[i] = (char)i;
 149         }
 150
 151         for(i=0; htab[i]!=EOS; i++)
 152                 hextab[htab[i]] = (char)((i < 16) ? i : i - 6);
 153
 154         for(i='A'; i<='Z'; i++)
 155                 tolowertab[i] |= 0x20;
 156
 157         // These characters are legal immediately after a period
 158         dotxtab['b'] = DOTB;                                    // .b .B .s .S
 159         dotxtab['B'] = DOTB;
 160         dotxtab['s'] = DOTB;
 161         dotxtab['S'] = DOTB;
 162         dotxtab['w'] = DOTW;                                    // .w .W
 163         dotxtab['W'] = DOTW;
 164         dotxtab['l'] = DOTL;                                    // .l .L
 165         dotxtab['L'] = DOTL;
 166         dotxtab['i'] = DOTI;                                    // .i .I (???)
 167         dotxtab['I'] = DOTI;
 168 }
 169
 170
 171 void SetFilenameForErrorReporting(void)
 172 {
 173         WORD fnum = cfileno;
 174
 175         // Check for absolute top filename (this should never happen)
 176         if (fnum == -1)
 177         {
 178                 curfname = "(*top*)";
 179                 return;
 180         }
 181
 182         FILEREC * fr = filerec;
 183
 184         // Advance to the correct record...
 185         while (fr != NULL && fnum != 0)
 186         {
 187                 fr = fr->frec_next;
 188                 fnum--;
 189         }
 190
 191         // Check for file # record not found (this should never happen either)
 192         if (fr == NULL)
 193         {
 194                 curfname = "(*NOT FOUND*)";
 195                 return;
 196         }
 197
 198         curfname = fr->frec_name;
 199 }
 200
 201
 202 //
 203 // Allocate an IFILE or IMACRO
 204 //
 205 INOBJ * a_inobj(int typ)
 206 {
 207         INOBJ * inobj;
 208         IFILE * ifile;
 209         IMACRO * imacro;
 210
 211         // Allocate and initialize INOBJ first
 212         if (f_inobj == NULL)
 213                 inobj = malloc(sizeof(INOBJ));
 214         else
 215         {
 216                 inobj = f_inobj;
 217                 f_inobj = f_inobj->in_link;
 218         }
 219
 220         switch (typ)
 221         {
 222         case SRC_IFILE:                                                 // Alloc and init an IFILE
 223                 if (f_ifile == NULL)
 224                         ifile = malloc(sizeof(IFILE));
 225                 else
 226                 {
 227                         ifile = f_ifile;
 228                         f_ifile = f_ifile->if_link;
 229                 }
 230
 231                 inobj->inobj.ifile = ifile;
 232                 break;
 233         case SRC_IMACRO:                                                // Alloc and init an IMACRO
 234                 if (f_imacro == NULL)
 235                         imacro = malloc(sizeof(IMACRO));
 236                 else
 237                 {
 238                         imacro = f_imacro;
 239                         f_imacro = f_imacro->im_link;
 240                 }
 241
 242                 inobj->inobj.imacro = imacro;
 243                 break;
 244         case SRC_IREPT:                                                 // Alloc and init an IREPT
 245                 inobj->inobj.irept = malloc(sizeof(IREPT));
 246                 DEBUG printf("alloc IREPT\n");
 247                 break;
 248         }
 249
 250         // Install INOBJ on top of input stack
 251         inobj->in_ifent = ifent;                                // Record .if context on entry
 252         inobj->in_type = (WORD)typ;
 253         inobj->in_otok = tok;
 254         inobj->in_etok = etok;
 255         inobj->in_link = cur_inobj;
 256         cur_inobj = inobj;
 257
 258         return inobj;
 259 }
 260
 261
 262 //
 263 // Perform macro substitution from 'orig' to 'dest'. Return OK or some error.
 264 // A macro reference is in one of two forms:
 265 // \name <non-name-character>
 266 // \{name}
 267 // A doubled backslash (\\) is compressed to a single backslash (\).
 268 // Argument definitions have been pre-tokenized, so we have to turn them back
 269 // into text. This means that numbers, in particular, become hex, regardless of
 270 // their representation when the macro was invoked. This is a hack.
 271 // A label may appear at the beginning of the line:
 272 // :<name><whitespace>
 273 // (the colon must be in the first column). These labels are stripped before
 274 // macro expansion takes place.
 275 //
 276 int ExpandMacro(char * src, char * dest, int destsiz)
 277 {
 278         int i;
 279         int questmark;                  // \? for testing argument existence
 280         char mname[128];                // Assume max size of a formal arg name
 281         char numbuf[20];                // Buffer for text of CONSTs
 282         TOKEN * tk;
 283         SYM * arg;
 284         char ** symbolString;
 285
 286         DEBUG { printf("ExM: src=\"%s\"\n", src); }
 287
 288         IMACRO * imacro = cur_inobj->inobj.imacro;
 289         int macnum = (int)(imacro->im_macro->sattr);
 290
 291 //      destsiz--;
 292         char * dst = dest;                                              // Next dest slot
 293         char * edst = dest + destsiz - 1;               // End + 1(?) of dest buffer
 294
 295         // Check for (and skip over) any "label" on the line
 296         char * s = src;
 297         char * d = NULL;
 298
 299         if (*s == ':')
 300         {
 301                 while (*s != EOS && !(chrtab[*s] & WHITE))
 302                         s++;
 303
 304                 if (*s != EOS)
 305                         s++;                                                    // Skip first whitespace
 306         }
 307
 308         // Expand the rest of the line
 309         while (*s != EOS)
 310         {
 311                 // Copy single character
 312                 if (*s != '\\')
 313                 {
 314                         if (dst >= edst)
 315                                 goto overflow;
 316
 317                         *dst++ = *s++;
 318                 }
 319                 // Do macro expansion
 320                 else
 321                 {
 322                         questmark = 0;
 323
 324                         // Do special cases
 325                         switch (*++s)
 326                         {
 327                         case '\\':                                              // \\, \ (collapse to single backslash)
 328                                 if (dst >= edst)
 329                                         goto overflow;
 330
 331                                 *dst++ = *s++;
 332                                 continue;
 333                         case '?':                                               // \? <macro>  set `questmark' flag
 334                                 ++s;
 335                                 questmark = 1;
 336                                 break;
 337                         case '#':                                               // \#, number of arguments
 338                                 sprintf(numbuf, "%d", (int)imacro->im_nargs);
 339                                 goto copystr;
 340                         case '!':                                               // \! size suffix supplied on invocation
 341                                 switch ((int)imacro->im_siz)
 342                                 {
 343                                 case SIZN: d = "";   break;
 344                                 case SIZB: d = ".b"; break;
 345                                 case SIZW: d = ".w"; break;
 346                                 case SIZL: d = ".l"; break;
 347                                 }
 348
 349                                 goto copy_d;
 350                         case '~':                                               // ==> unique label string Mnnnn...
 351                                 sprintf(numbuf, "M%u", curuniq);
 352 copystr:
 353                                 d = numbuf;
 354 copy_d:
 355                                 s++;
 356
 357                                 while (*d != EOS)
 358                                 {
 359                                         if (dst >= edst)
 360                                                 goto overflow;
 361                                         else
 362                                                 *dst++ = *d++;
 363                                 }
 364
 365                                 continue;
 366                         case EOS:
 367                                 return error("missing argument name");
 368                         }
 369
 370                         // \n ==> argument number 'n', 0..9
 371                         if (chrtab[*s] & DIGIT)
 372                         {
 373                                 i = *s++ - '1';
 374
 375                                 if (i < 0)
 376                                         i = 9;
 377
 378                                 goto arg_num;
 379                         }
 380
 381                         // Get argument name: \name, \{name}
 382                         d = mname;
 383
 384                         // \label
 385                         if (*s != '{')
 386                         {
 387                                 do
 388                                 {
 389                                         *d++ = *s++;
 390                                 }
 391                                 while (chrtab[*s] & CTSYM);
 392                         }
 393                         // \\{label}
 394                         else
 395                         {
 396                                 for(++s; *s != EOS && *s != '}';)
 397                                         *d++ = *s++;
 398
 399                                 if (*s != '}')
 400                                         return error("missing '}'");
 401                                 else
 402                                         s++;
 403                         }
 404
 405                         *d = EOS;
 406
 407                         // Lookup the argument and copy its (string) value into the
 408                         // destination string
 409                         DEBUG printf("argument='%s'\n", mname);
 410
 411                         if ((arg = lookup(mname, MACARG, macnum)) == NULL)
 412                                 return errors("undefined argument: '%s'", mname);
 413                         else
 414                         {
 415                                 // Convert a string of tokens (terminated with EOL) back into
 416                                 // text. If an argument is out of range (not specified in the
 417                                 // macro invocation) then it is ignored.
 418                                 i = (int)arg->svalue;
 419 arg_num:
 420                                 DEBUG printf("~argnumber=%d (argBase=%u)\n", i, imacro->argBase);
 421                                 tk = NULL;
 422
 423                                 if (i < imacro->im_nargs)
 424                                 {
 425 #if 0
 426 //                                      tk = argp[i];
 427 //                                      tk = argPtrs[i];
 428                                         tk = argPtrs[imacro->argBase + i];
 429 #else
 430                                         tk = imacro->argument[i].token;
 431                                         symbolString = imacro->argument[i].string;
 432 //DEBUG
 433 //{
 434 //      printf("ExM: Preparing to parse argument #%u...\n", i);
 435 //      dumptok(tk);
 436 //}
 437 #endif
 438                                 }
 439
 440                                 // \?arg yields:
 441                                 //    0  if the argument is empty or non-existant,
 442                                 //    1  if the argument is not empty
 443                                 if (questmark)
 444                                 {
 445                                         if (tk == NULL || *tk == EOL)
 446                                                 questmark = 0;
 447
 448                                         if (dst >= edst)
 449                                                 goto overflow;
 450
 451                                         *dst++ = (char)(questmark + '0');
 452                                         continue;
 453                                 }
 454
 455                                 // Argument # is in range, so expand it
 456                                 if (tk != NULL)
 457                                 {
 458                                         while (*tk != EOL)
 459                                         {
 460                                                 // Reverse-translation from a token number to a string.
 461                                                 // This is a hack. It might be better table-driven.
 462                                                 d = NULL;
 463
 464                                                 if ((*tk >= KW_D0) && !rdsp && !rgpu)
 465                                                 {
 466                                                         d = regname[(int)*tk++ - KW_D0];
 467                                                         goto strcopy;
 468                                                 }
 469                                                 else if ((*tk >= KW_R0) && (*tk <= KW_R31))
 470                                                 {
 471                                                         d = riscregname[(int)*tk++ - KW_R0];
 472                                                         goto strcopy;
 473                                                 }
 474                                                 else
 475                                                 {
 476                                                         switch ((int)*tk++)
 477                                                         {
 478                                                         case SYMBOL:
 479 #if 0
 480 //                                                              d = (char *)*tk++;
 481                                                                 d = string[*tk++];
 482 #else
 483                                                                 // This fix should be done for strings too
 484                                                                 d = symbolString[*tk++];
 485 DEBUG printf("ExM: SYMBOL=\"%s\"", d);
 486 #endif
 487                                                                 break;
 488                                                         case STRING:
 489 #if 0
 490 //                                                              d = (char *)*tk++;
 491                                                                 d = string[*tk++];
 492 #else
 493                                                                 d = symbolString[*tk++];
 494 #endif
 495                                                                 if (dst >= edst)
 496                                                                         goto overflow;
 497
 498                                                                 *dst++ = '"';
 499
 500                                                                 while (*d != EOS)
 501                                                                 {
 502                                                                         if (dst >= edst)
 503                                                                                 goto overflow;
 504                                                                         else
 505                                                                                 *dst++ = *d++;
 506                                                                 }
 507
 508                                                                 if (dst >= edst)
 509                                                                         goto overflow;
 510
 511                                                                 *dst++ = '"';
 512                                                                 continue;
 513                                                                 break;
 514 // Shamus: Changing the format specifier from %lx to %ux caused
 515 //         the assembler to choke on legitimate code... Need to investigate
 516 //         this further before changing anything else here!
 517                                                         case CONST:
 518                                                                 sprintf(numbuf, "$%lx", (LONG)*tk++);
 519                                                                 d = numbuf;
 520                                                                 break;
 521                                                         case DEQUALS:
 522                                                                 d = "==";
 523                                                                 break;
 524                                                         case SET:
 525                                                                 d = "set";
 526                                                                 break;
 527                                                         case COLON:
 528                                                                 d = ":";
 529                                                                 break;
 530                                                         case DCOLON:
 531                                                                 d = "::";
 532                                                                 break;
 533                                                         case GE:
 534                                                                 d = ">=";
 535                                                                 break;
 536                                                         case LE:
 537                                                                 d = "<=";
 538                                                                 break;
 539                                                         case NE:
 540                                                                 d = "<>";
 541                                                                 break;
 542                                                         case SHR:
 543                                                                 d = ">>";
 544                                                                 break;
 545                                                         case SHL:
 546                                                                 d = "<<";
 547                                                                 break;
 548                                                         case DOTB:
 549                                                                 d = ".b";
 550                                                                 break;
 551                                                         case DOTW:
 552                                                                 d = ".w";
 553                                                                 break;
 554                                                         case DOTL:
 555                                                                 d = ".l";
 556                                                                 break;
 557                                                         case CR_ABSCOUNT:
 558                                                                 d = "^^abscount";
 559                                                                 break;
 560                                                         case CR_DATE:
 561                                                                 d = "^^date";
 562                                                                 break;
 563                                                         case CR_TIME:
 564                                                                 d = "^^time";
 565                                                                 break;
 566                                                         case CR_DEFINED:
 567                                                                 d = "^^defined ";
 568                                                                 break;
 569                                                         case CR_REFERENCED:
 570                                                                 d = "^^referenced ";
 571                                                                 break;
 572                                                         case CR_STREQ:
 573                                                                 d = "^^streq ";
 574                                                                 break;
 575                                                         case CR_MACDEF:
 576                                                                 d = "^^macdef ";
 577                                                                 break;
 578                                                         default:
 579                                                                 if (dst >= edst)
 580                                                                         goto overflow;
 581
 582                                                                 *dst++ = (char)*(tk - 1);
 583                                                                 break;
 584                                                         }
 585                                                 }
 586
 587                                                 // If 'd' != NULL, copy string to destination
 588                                                 if (d != NULL)
 589                                                 {
 590 strcopy:
 591                                                         DEBUG printf("d='%s'\n", d);
 592
 593                                                         while (*d != EOS)
 594                                                         {
 595                                                                 if (dst >= edst)
 596                                                                         goto overflow;
 597                                                                 else
 598                                                                         *dst++ = *d++;
 599                                                         }
 600                                                 }
 601                                         }
 602                                 }
 603                         }
 604                 }
 605         }
 606
 607         *dst = EOS;
 608         DEBUG { printf("ExM: dst=\"%s\"\n", dest); }
 609         return OK;
 610
 611 overflow:
 612         *dst = EOS;
 613         DEBUG printf("*** OVERFLOW LINE ***\n%s\n", dest);
 614         return fatal("line too long as a result of macro expansion");
 615 }
 616
 617
 618 //
 619 // Get next line of text from a macro
 620 //
 621 char * GetNextMacroLine(void)
 622 {
 623 //      unsigned source_addr;
 624
 625         IMACRO * imacro = cur_inobj->inobj.imacro;
 626 //      LONG * strp = imacro->im_nextln;
 627         struct LineList * strp = imacro->im_nextln;
 628
 629         if (strp == NULL)                                               // End-of-macro
 630                 return NULL;
 631
 632 //      imacro->im_nextln = (LONG *)*strp;
 633         imacro->im_nextln = strp->next;
 634 //      ExpandMacro((char *)(strp + 1), imacro->im_lnbuf, LNSIZ);
 635         ExpandMacro(strp->line, imacro->im_lnbuf, LNSIZ);
 636
 637         return imacro->im_lnbuf;
 638 }
 639
 640
 641 //
 642 // Get next line of text from a repeat block
 643 //
 644 char * GetNextRepeatLine(void)
 645 {
 646
 647         IREPT * irept = cur_inobj->inobj.irept;
 648         LONG * strp = irept->ir_nextln;                 // initial null
 649
 650         // Do repeat at end of .rept block's string list
 651         if (strp == NULL)
 652         {
 653                 DEBUG printf("back-to-top-of-repeat-block count=%d\n", (int)irept->ir_count);
 654                 irept->ir_nextln = irept->ir_firstln;   // copy first line
 655
 656                 if (irept->ir_count-- == 0)
 657                 {
 658                         DEBUG printf("end-repeat-block\n");
 659                         return NULL;
 660                 }
 661
 662                 strp = irept->ir_nextln;
 663         }
 664
 665         strcpy(irbuf, (char *)(irept->ir_nextln + 1));
 666         DEBUG printf("repeat line='%s'\n", irbuf);
 667         irept->ir_nextln = (LONG *)*strp;
 668
 669         return irbuf;
 670 }
 671
 672
 673 //
 674 // Include a source file used at the root, and for ".include" files
 675 //
 676 int include(int handle, char * fname)
 677 {
 678         IFILE * ifile;
 679         INOBJ * inobj;
 680         FILEREC * fr;
 681
 682         // Debug mode
 683         if (debug)
 684                 printf("[include: %s, cfileno=%u]\n", fname, cfileno);
 685
 686         // Alloc and initialize include-descriptors
 687         inobj = a_inobj(SRC_IFILE);
 688         ifile = inobj->inobj.ifile;
 689
 690         ifile->ifhandle = handle;                               // Setup file handle
 691         ifile->ifind = ifile->ifcnt = 0;                // Setup buffer indices
 692         ifile->ifoldlineno = curlineno;                 // Save old line number
 693         ifile->ifoldfname = curfname;                   // Save old filename
 694         ifile->ifno = cfileno;                                  // Save old file number
 695
 696 //      cfileno = filecount++;                                  // Compute new file number
 697         // NB: This *must* be preincrement, we're adding one to the filecount here!
 698         cfileno = ++filecount;                                  // Compute NEW file number
 699         curfname = strdup(fname);                               // Set current filename (alloc storage)
 700         curlineno = 0;                                                  // Start on line zero
 701
 702         // Add another file to the file-record
 703         fr = (FILEREC *)malloc(sizeof(FILEREC));
 704         fr->frec_next = NULL;
 705         fr->frec_name = curfname;
 706
 707         if (last_fr == NULL)
 708                 filerec = fr;                                           // Add first filerec
 709         else
 710                 last_fr->frec_next = fr;                        // Append to list of filerecs
 711
 712         last_fr = fr;
 713         DEBUG printf("[include: curfname: %s, cfileno=%u]\n", curfname, cfileno);
 714
 715         return OK;
 716 }
 717
 718
 719 //
 720 // Pop the current input level
 721 //
 722 int fpop(void)
 723 {
 724         IFILE * ifile;
 725         IMACRO * imacro;
 726         LONG * p, * p1;
 727         INOBJ * inobj = cur_inobj;
 728
 729         if (inobj != NULL)
 730         {
 731                 // Pop IFENT levels until we reach the conditional assembly context we
 732                 // were at when the input object was entered.
 733                 while (ifent != inobj->in_ifent)
 734                 {
 735                         if (d_endif() != 0)                             // Something bad happened during endif parsing?
 736                                 return -1;                                      // If yes, bail instead of getting stuck in a loop
 737                 }
 738
 739                 tok = inobj->in_otok;                           // Restore tok and otok
 740                 etok = inobj->in_etok;
 741
 742                 switch (inobj->in_type)
 743                 {
 744                 case SRC_IFILE:                                         // Pop and release an IFILE
 745                         if (debug)
 746                                 printf("[Leaving: %s]\n", curfname);
 747
 748                         ifile = inobj->inobj.ifile;
 749                         ifile->if_link = f_ifile;
 750                         f_ifile = ifile;
 751                         close(ifile->ifhandle);                 // Close source file
 752 if (debug)      printf("[fpop (pre):  curfname=%s]\n", curfname);
 753                         curfname = ifile->ifoldfname;   // Set current filename
 754 if (debug)      printf("[fpop (post): curfname=%s]\n", curfname);
 755 if (debug)      printf("[fpop: (pre)  cfileno=%d ifile->ifno=%d]\n", (int)cfileno, (int)ifile->ifno);
 756                         curlineno = ifile->ifoldlineno; // Set current line#
 757                         DEBUG printf("cfileno=%d ifile->ifno=%d\n", (int)cfileno, (int)ifile->ifno);
 758                         cfileno = ifile->ifno;                  // Restore current file number
 759 if (debug)      printf("[fpop: (post) cfileno=%d ifile->ifno=%d]\n", (int)cfileno, (int)ifile->ifno);
 760                         break;
 761                 case SRC_IMACRO:                                        // Pop and release an IMACRO
 762                         imacro = inobj->inobj.imacro;
 763                         imacro->im_link = f_imacro;
 764                         f_imacro = imacro;
 765                         break;
 766                 case SRC_IREPT:                                         // Pop and release an IREPT
 767                         DEBUG printf("dealloc IREPT\n");
 768                         p = inobj->inobj.irept->ir_firstln;
 769
 770                         while (p != NULL)
 771                         {
 772                                 p1 = (LONG *)*p;
 773                                 p = p1;
 774                         }
 775
 776                         break;
 777                 }
 778
 779                 cur_inobj = inobj->in_link;
 780                 inobj->in_link = f_inobj;
 781                 f_inobj = inobj;
 782         }
 783
 784         return 0;
 785 }
 786
 787
 788 //
 789 // Get line from file into buf, return NULL on EOF or ptr to the start of a
 790 // null-term line
 791 //
 792 char * GetNextLine(void)
 793 {
 794         int i, j;
 795         char * p, * d;
 796         int readamt = -1;                                               // 0 if last read() yeilded 0 bytes
 797         IFILE * fl = cur_inobj->inobj.ifile;
 798
 799         for(;;)
 800         {
 801                 // Scan for next end-of-line; handle stupid text formats by treating
 802                 // \r\n the same as \n. (lone '\r' at end of buffer means we have to
 803                 // check for '\n').
 804                 d = &fl->ifbuf[fl->ifind];
 805
 806                 for(p=d, i=0, j=fl->ifcnt; i<j; i++, p++)
 807                 {
 808                         if (*p == '\r' || *p == '\n')
 809                         {
 810                                 i++;
 811
 812                                 if (*p == '\r')
 813                                 {
 814                                         if (i >= j)
 815                                                 break;  // Need to read more, then look for '\n' to eat
 816                                         else if (p[1] == '\n')
 817                                                 i++;
 818                                 }
 819
 820                                 // Cover up the newline with end-of-string sentinel
 821                                 *p = '\0';
 822
 823                                 fl->ifind += i;
 824                                 fl->ifcnt -= i;
 825                                 return d;
 826                         }
 827                 }
 828
 829                 // Handle hanging lines by ignoring them (Input file is exhausted, no
 830                 // \r or \n on last line)
 831                 // Shamus: This is retarded. Never ignore any input!
 832                 if (!readamt && fl->ifcnt)
 833                 {
 834 #if 0
 835                         fl->ifcnt = 0;
 836                         *p = '\0';
 837                         return NULL;
 838 #else
 839                         // Really should check to see if we're at the end of the buffer!
 840                         // :-P
 841                         fl->ifbuf[fl->ifind + fl->ifcnt] = '\0';
 842                         fl->ifcnt = 0;
 843                         return &fl->ifbuf[fl->ifind];
 844 #endif
 845                 }
 846
 847                 // Truncate and return absurdly long lines.
 848                 if (fl->ifcnt >= QUANTUM)
 849                 {
 850                         fl->ifbuf[fl->ifind + fl->ifcnt - 1] = '\0';
 851                         fl->ifcnt = 0;
 852                         return &fl->ifbuf[fl->ifind];
 853                 }
 854
 855                 // Relocate what's left of a line to the beginning of the buffer, and
 856                 // read some more of the file in; return NULL if the buffer's empty and
 857                 // on EOF.
 858                 if (fl->ifind != 0)
 859                 {
 860                         p = &fl->ifbuf[fl->ifind];
 861                         d = &fl->ifbuf[fl->ifcnt & 1];
 862
 863                         for(i=0; i<fl->ifcnt; i++)
 864                                 *d++ = *p++;
 865
 866                         fl->ifind = fl->ifcnt & 1;
 867                 }
 868
 869                 readamt = read(fl->ifhandle, &fl->ifbuf[fl->ifind + fl->ifcnt], QUANTUM);
 870
 871                 if (readamt < 0)
 872                         return NULL;
 873
 874                 if ((fl->ifcnt += readamt) == 0)
 875                         return NULL;
 876         }
 877 }
 878
 879
 880 //
 881 // Tokenize a line
 882 //
 883 int TokenizeLine(void)
 884 {
 885         char * ln = NULL;                       // Ptr to current position in line
 886         char * p;                                       // Random character ptr
 887         TOKEN * tk;                                     // Token-deposit ptr
 888         int state = 0;                          // State for keyword detector
 889         int j = 0;                                      // Var for keyword detector
 890         char c;                                         // Random char
 891         VALUE v;                                        // Random value
 892         char * nullspot = NULL;         // Spot to clobber for SYMBOL termination
 893         int stuffnull;                          // 1:terminate SYMBOL '\0' at *nullspot
 894         char c1;
 895         int stringNum = 0;                      // Pointer to string locations in tokenized line
 896
 897 retry:
 898
 899         if (cur_inobj == NULL)                                  // Return EOF if input stack is empty
 900                 return TKEOF;
 901
 902         // Get another line of input from the current input source: a file, a
 903         // macro, or a repeat-block
 904         switch (cur_inobj->in_type)
 905         {
 906         // Include-file:
 907         // o  handle EOF;
 908         // o  bump source line number;
 909         // o  tag the listing-line with a space;
 910         // o  kludge lines generated by Alcyon C.
 911         case SRC_IFILE:
 912                 if ((ln = GetNextLine()) == NULL)
 913                 {
 914 if (debug) printf("TokenizeLine: Calling fpop() from SRC_IFILE...\n");
 915                         if (fpop()==0)                                  // Pop input level
 916                                 goto retry;                                     // Try for more lines
 917                         else
 918                         {
 919                                 ifent->if_prev = (IFENT *) - 1; //Signal Assemble() that we have reached EOF with unbalanced if/endifs
 920                                 return TKEOF;
 921                         }
 922                 }
 923
 924                 curlineno++;                                            // Bump line number
 925                 lntag = SPACE;
 926
 927                 if (as68_flag)
 928                 {
 929                         // AS68 compatibility, throw away all lines starting with
 930                         // back-quotes, tildes, or '*'
 931                         // On other lines, turn the first '*' into a semi-colon.
 932                         if (*ln == '`' || *ln == '~' || *ln == '*')
 933                                 *ln = ';';
 934                         else
 935                         {
 936                                 for(p=ln; *p!=EOS; p++)
 937                                 {
 938                                         if (*p == '*')
 939                                         {
 940                                                 *p = ';';
 941                                                 break;
 942                                         }
 943                                 }
 944                         }
 945                 }
 946
 947                 break;
 948         // Macro-block:
 949         // o  Handle end-of-macro;
 950         // o  tag the listing-line with an at (@) sign.
 951         case SRC_IMACRO:
 952                 if ((ln = GetNextMacroLine()) == NULL)
 953                 {
 954                         if (ExitMacro() == 0)                   // Exit macro (pop args, do fpop(), etc)
 955                                 goto retry;                                     // Try for more lines...
 956                         else
 957                                 return TKEOF;                           // Oops, we got a non zero return code, signal EOF
 958                 }
 959
 960                 lntag = '@';
 961                 break;
 962         // Repeat-block:
 963         // o  Handle end-of-repeat-block;
 964         // o  tag the listing-line with a pound (#) sign.
 965         case SRC_IREPT:
 966                 if ((ln = GetNextRepeatLine()) == NULL)
 967                 {
 968 if (debug) printf("TokenizeLine: Calling fpop() from SRC_IREPT...\n");
 969                         fpop();
 970                         goto retry;
 971                 }
 972
 973                 lntag = '#';
 974                 break;
 975         }
 976
 977         // Save text of the line.  We only do this during listings and within
 978         // macro-type blocks, since it is expensive to unconditionally copy every
 979         // line.
 980         if (lnsave)
 981                 strcpy(lnbuf, ln);
 982
 983         // General house-keeping
 984         tok = tokeol;                   // Set "tok" to EOL in case of error
 985         tk = etok;                              // Reset token ptr
 986         stuffnull = 0;                  // Don't stuff nulls
 987         totlines++;                             // Bump total #lines assembled
 988
 989         // See if the entire line is a comment. This is a win if the programmer
 990         // puts in lots of comments
 991         if (*ln == '*' || *ln == ';' || ((*ln == '/') && (*(ln + 1) == '/')))
 992                 goto goteol;
 993
 994         // Main tokenization loop;
 995         // o  skip whitespace;
 996         // o  handle end-of-line;
 997         // o  handle symbols;
 998         // o  handle single-character tokens (operators, etc.);
 999         // o  handle multiple-character tokens (constants, strings, etc.).
1000         for(; *ln!=EOS;)
1001         {
1002                 // Skip whitespace, handle EOL
1003                 while ((int)chrtab[*ln] & WHITE)
1004                         ln++;
1005
1006                 // Handle EOL, comment with ';'
1007                 if (*ln == EOS || *ln == ';'|| ((*ln == '/') && (*(ln + 1) == '/')))
1008                         break;
1009
1010                 // Handle start of symbol. Symbols are null-terminated in place. The
1011                 // termination is always one symbol behind, since there may be no place
1012                 // for a null in the case that an operator immediately follows the name.
1013                 c = chrtab[*ln];
1014
1015                 if (c & STSYM)
1016                 {
1017                         if (stuffnull)                  // Terminate old symbol from previous pass
1018                                 *nullspot = EOS;
1019
1020                         v = 0;                                  // Assume no DOT attrib follows symbol
1021                         stuffnull = 1;
1022                         p = nullspot = ln++;    // Nullspot -> start of this symbol
1023
1024                         // Find end of symbol (and compute its length)
1025                         for(j=1; (int)chrtab[*ln]&CTSYM; j++)
1026                                 ln++;
1027
1028                         // Handle "DOT" special forms (like ".b") that follow a normal
1029                         // symbol or keyword:
1030                         if (*ln == '.')
1031                         {
1032                                 *ln++ = EOS;            // Terminate symbol
1033                                 stuffnull = 0;          // And never try it again
1034
1035                                 // Character following the `.' must have a DOT attribute, and
1036                                 // the chararacter after THAT one must not have a start-symbol
1037                                 // attribute (to prevent symbols that look like, for example,
1038                                 // "zingo.barf", which might be a good idea anyway....)
1039                                 if ((((int)chrtab[*ln] & DOT) == 0) || ((int)dotxtab[*ln] <= 0))
1040                                         return error("[bwsl] must follow `.' in symbol");
1041
1042                                 v = (VALUE)dotxtab[*ln++];
1043
1044                                 if ((int)chrtab[*ln] & CTSYM)
1045                                         return error("misuse of `.', not allowed in symbols");
1046                         }
1047
1048                         // If the symbol is small, check to see if it's really the name of
1049                         // a register.
1050                         if (j <= KWSIZE)
1051                         {
1052                                 for(state=0; state>=0;)
1053                                 {
1054                                         j = (int)tolowertab[*p++];
1055                                         j += kwbase[state];
1056
1057                                         if (kwcheck[j] != state)
1058                                         {
1059                                                 j = -1;
1060                                                 break;
1061                                         }
1062
1063                                         if (*p == EOS || p == ln)
1064                                         {
1065                                                 j = kwaccept[j];
1066                                                 break;
1067                                         }
1068
1069                                         state = kwtab[j];
1070                                 }
1071                         }
1072                         else
1073                         {
1074                                 j = -1;
1075                         }
1076
1077                         // Make j = -1 if user tries to use a RISC register while in 68K mode
1078                         if (!(rgpu || rdsp) && ((TOKEN)j >= KW_R0 && (TOKEN)j <= KW_R31))
1079                         {
1080                                 j = -1;
1081                         }
1082
1083                         // Make j = -1 if time, date etc with no preceeding ^^
1084                         // defined, referenced, streq, macdef, date and time
1085                         switch ((TOKEN)j)
1086                         {
1087                         case 112:   // defined
1088                         case 113:   // referenced
1089                         case 118:   // streq
1090                         case 119:   // macdef
1091                         case 120:   // time
1092                         case 121:   // date
1093                                 j = -1;
1094                         }
1095
1096                         // If not tokenized keyword OR token was not found
1097                         if (j < 0 || state < 0)
1098                         {
1099                                 *tk++ = SYMBOL;
1100 //#warning
1101 //problem here: nullspot is a char * but TOKEN is a uint32_t. On a 64-bit
1102 //system, this will cause all kinds of mischief.
1103 #if 0
1104                                 *tk++ = (TOKEN)nullspot;
1105 #else
1106                                 string[stringNum] = nullspot;
1107                                 *tk++ = stringNum;
1108                                 stringNum++;
1109 #endif
1110                         }
1111                         else
1112                         {
1113                                 *tk++ = (TOKEN)j;
1114                                 stuffnull = 0;
1115                         }
1116
1117                         if (v)                                                  // Record attribute token (if any)
1118                                 *tk++ = (TOKEN)v;
1119
1120                         if (stuffnull)                                  // Arrange for string termination on next pass
1121                                 nullspot = ln;
1122
1123                         continue;
1124                 }
1125
1126                 // Handle identity tokens
1127                 if (c & SELF)
1128                 {
1129                         *tk++ = *ln++;
1130                         continue;
1131                 }
1132
1133                 // Handle multiple-character tokens
1134                 if (c & MULTX)
1135                 {
1136                         switch (*ln++)
1137                         {
1138                         case '!':               // ! or !=
1139                                 if (*ln == '=')
1140                                 {
1141                                         *tk++ = NE;
1142                                         ++ln;
1143                                 }
1144                                 else
1145                                         *tk++ = '!';
1146
1147                                 continue;
1148                         case '\'':              // 'string'
1149                         case '\"':              // "string"
1150                                 c1 = ln[-1];
1151                                 *tk++ = STRING;
1152 //#warning
1153 // More char * stuffing (8 bytes) into the space of 4 (TOKEN).
1154 // Need to figure out how to fix this crap.
1155 #if 0
1156                                 *tk++ = (TOKEN)ln;
1157 #else
1158                                 string[stringNum] = ln;
1159                                 *tk++ = stringNum;
1160                                 stringNum++;
1161 #endif
1162
1163                                 for(p=ln; *ln!=EOS && *ln!=c1;)
1164                                 {
1165                                         c = *ln++;
1166
1167                                         if (c == '\\')
1168                                         {
1169                                                 switch (*ln++)
1170                                                 {
1171                                                 case EOS:
1172                                                         return(error("unterminated string"));
1173                                                 case 'e':
1174                                                         c = '\033';
1175                                                         break;
1176                                                 case 'n':
1177                                                         c = '\n';
1178                                                         break;
1179                                                 case 'b':
1180                                                         c = '\b';
1181                                                         break;
1182                                                 case 't':
1183                                                         c = '\t';
1184                                                         break;
1185                                                 case 'r':
1186                                                         c = '\r';
1187                                                         break;
1188                                                 case 'f':
1189                                                         c = '\f';
1190                                                         break;
1191                                                 case '\"':
1192                                                         c = '\"';
1193                                                         break;
1194                                                 case '\'':
1195                                                         c = '\'';
1196                                                         break;
1197                                                 case '\\':
1198                                                         c = '\\';
1199                                                         break;
1200                                                 default:
1201                                                         warn("bad backslash code in string");
1202                                                         ln--;
1203                                                         break;
1204                                                 }
1205                                         }
1206
1207                                         *p++ = c;
1208                                 }
1209
1210                                 if (*ln++ != c1)
1211                                         return error("unterminated string");
1212
1213                                 *p++ = EOS;
1214                                 continue;
1215                         case '$':               // $, hex constant
1216                                 if ((int)chrtab[*ln] & HDIGIT)
1217                                 {
1218                                         v = 0;
1219
1220                                         // Parse the hex value
1221                                         while ((int)hextab[*ln] >= 0)
1222                                                 v = (v << 4) + (int)hextab[*ln++];
1223
1224                                         // ggn: Okay, some comments here are in order I think....
1225                                         // The original madmac sources didn't parse the size at
1226                                         // this point (i.e. .b/.w/.l). It was probably done at
1227                                         // another point, although it's unclear to me exactly
1228                                         // where. So why change this? My understanding (at least
1229                                         // from what SCPCD said on IRC) is that .w addressing
1230                                         // formats produce wrong code on jaguar (or doesn't execute
1231                                         // properly? something like that). So the code was changed
1232                                         // to mask off the upper bits depending on length (note: I
1233                                         // don't think .b is valid at all! I only know of .w/.l, so
1234                                         // this should probably be wiped). Then the code that
1235                                         // parses the constant and checks to see if it's between
1236                                         // $ffff0000 and $8000 never got triggered, so yay job
1237                                         // done! ...now say we want to assemble a st .prg. One of
1238                                         // the most widely spread optimisations is move.X expr.w,Y
1239                                         // (or vice versa, or both, anyway...) to access hardware
1240                                         // registers (which are mapped to $fxxxxx). This botchy
1241                                         // thing would create "hilarious" code while trying to
1242                                         // access hardware registers. So I made a condition to see
1243                                         // if st mode or jaguar is active and apply the both or
1244                                         // not. One last note: this is hardcoded to get optimised
1245                                         // for now on ST mode, i.e. it can't generate code like
1246                                         // move.w $00001234,d0 - it'll always get optimised to
1247                                         // move.w $1234.w,d0. It's probably ok, but maybe a warning
1248                                         // should be emitted? Or maybe finding a way to make it not
1249                                         // auto-optimise? I think it's ok for now...
1250                                         if (*ln == '.')
1251                                         {
1252                                                 if (obj_format == ALCYON)
1253                                                 {
1254                                                         if ((*(ln + 1) == 'b') || (*(ln + 1) == 'B') || (*(ln + 1) == 'w') || (*(ln + 1) == 'W') || (*(ln + 1) == 'l') || (*(ln + 1) == 'L'))
1255                                                         {
1256                                                                 ln += 2;
1257                                                         }
1258                                                 }
1259                                                 else
1260                                                 {
1261                                                         if ((*(ln + 1) & 0xDF) == 'B')
1262                                                         {
1263                                                                 v &= 0x000000FF;
1264                                                                 ln += 2;
1265                                                         }
1266                                                         else if ((*(ln + 1) & 0xDF) == 'W')
1267                                                         {
1268                                                                 v &= 0x0000FFFF;
1269                                                                 ln += 2;
1270                                                         }
1271                                                         else if ((*(ln + 1) & 0xDF) == 'L')
1272                                                         {
1273                                                                 ln += 2;
1274                                                         }
1275                                                 }
1276                                         }
1277
1278                                         *tk++ = CONST;
1279                                         *tk++ = v;
1280                                 }
1281                                 else
1282                                         *tk++ = '$';
1283
1284                                 continue;
1285                         case '<':               // < or << or <> or <=
1286                                 switch (*ln)
1287                                 {
1288                                 case '<':
1289                                         *tk++ = SHL;
1290                                         ++ln;
1291                                         continue;
1292                                 case '>':
1293                                         *tk++ = NE;
1294                                         ++ln;
1295                                         continue;
1296                                 case '=':
1297                                         *tk++ = LE;
1298                                         ++ln;
1299                                         continue;
1300                                 default:
1301                                         *tk++ = '<';
1302                                         continue;
1303                                 }
1304                         case ':':               // : or ::
1305                                 if (*ln == ':')
1306                                 {
1307                                         *tk++ = DCOLON;
1308                                         ++ln;
1309                                 }
1310                                 else
1311                                         *tk++ = ':';
1312
1313                                 continue;
1314                         case '=':               // = or ==
1315                                 if (*ln == '=')
1316                                 {
1317                                         *tk++ = DEQUALS;
1318                                         ++ln;
1319                                 }
1320                                 else
1321                                         *tk++ = '=';
1322
1323                                 continue;
1324                         case '>':               // > or >> or >=
1325                                 switch (*ln)
1326                                 {
1327                                 case '>':
1328                                         *tk++ = SHR;
1329                                         ln++;
1330                                         continue;
1331                                 case '=':
1332                                         *tk++ = GE;
1333                                         ln++;
1334                                         continue;
1335                                 default:
1336                                         *tk++ = '>';
1337                                         continue;
1338                                 }
1339                         case '%':               // % or binary constant
1340                                 if (*ln < '0' || *ln > '1')
1341                                 {
1342                                         *tk++ = '%';
1343                                         continue;
1344                                 }
1345
1346                                 v = 0;
1347
1348                                 while (*ln >= '0' && *ln <= '1')
1349                                         v = (v << 1) + *ln++ - '0';
1350
1351                                 if (*ln == '.')
1352                                 {
1353                                         if ((*(ln + 1) == 'b') || (*(ln + 1) == 'B'))
1354                                         {
1355                                                 v &= 0x000000FF;
1356                                                 ln += 2;
1357                                         }
1358
1359                                         if ((*(ln + 1) == 'w') || (*(ln + 1) == 'W'))
1360                                         {
1361                                                 v &= 0x0000FFFF;
1362                                                 ln += 2;
1363                                         }
1364
1365                                         if ((*(ln + 1) == 'l') || (*(ln + 1) == 'L'))
1366                                         {
1367                                                 ln += 2;
1368                                         }
1369                                 }
1370
1371                                 *tk++ = CONST;
1372                                 *tk++ = v;
1373                                 continue;
1374                         case '@':               // @ or octal constant
1375                                 if (*ln < '0' || *ln > '7')
1376                                 {
1377                                         *tk++ = '@';
1378                                         continue;
1379                                 }
1380
1381                                 v = 0;
1382
1383                                 while (*ln >= '0' && *ln <= '7')
1384                                         v = (v << 3) + *ln++ - '0';
1385
1386                                 if (*ln == '.')
1387                                 {
1388                                         if ((*(ln+1) == 'b') || (*(ln+1) == 'B'))
1389                                         {
1390                                                 v &= 0x000000FF;
1391                                                 ln += 2;
1392                                         }
1393
1394                                         if ((*(ln+1) == 'w') || (*(ln+1) == 'W'))
1395                                         {
1396                                                 v &= 0x0000FFFF;
1397                                                 ln += 2;
1398                                         }
1399
1400                                         if ((*(ln+1) == 'l') || (*(ln+1) == 'L'))
1401                                         {
1402                                                 ln += 2;
1403                                         }
1404                                 }
1405
1406                                 *tk++ = CONST;
1407                                 *tk++ = v;
1408                                 continue;
1409                         case '^':               // ^ or ^^ <operator-name>
1410                                 if (*ln != '^')
1411                                 {
1412                                         *tk++ = '^';
1413                                         continue;
1414                                 }
1415
1416                                 if (((int)chrtab[*++ln] & STSYM) == 0)
1417                                 {
1418                                         error("invalid symbol following ^^");
1419                                         continue;
1420                                 }
1421
1422                                 p = ln++;
1423
1424                                 while ((int)chrtab[*ln] & CTSYM)
1425                                         ++ln;
1426
1427                                 for(state=0; state>=0;)
1428                                 {
1429                                         // Get char, convert to lowercase
1430                                         j = *p++;
1431
1432                                         if (j >= 'A' && j <= 'Z')
1433                                                 j += 0x20;
1434
1435                                         j += kwbase[state];
1436
1437                                         if (kwcheck[j] != state)
1438                                         {
1439                                                 j = -1;
1440                                                 break;
1441                                         }
1442
1443                                         if (*p == EOS || p == ln)
1444                                         {
1445                                                 j = kwaccept[j];
1446                                                 break;
1447                                         }
1448
1449                                         state = kwtab[j];
1450                                 }
1451
1452                                 if (j < 0 || state < 0)
1453                                 {
1454                                         error("unknown symbol following ^^");
1455                                         continue;
1456                                 }
1457
1458                                 *tk++ = (TOKEN)j;
1459                                 continue;
1460                         default:
1461                                 interror(2);    // Bad MULTX entry in chrtab
1462                                 continue;
1463                         }
1464                 }
1465
1466                 // Handle decimal constant
1467                 if (c & DIGIT)
1468                 {
1469                         v = 0;
1470
1471                         while ((int)chrtab[*ln] & DIGIT)
1472                                 v = (v * 10) + *ln++ - '0';
1473
1474                         // See if there's a .[bwl] after the constant & deal with it if so
1475                         if (*ln == '.')
1476                         {
1477                                 if ((*(ln + 1) == 'b') || (*(ln + 1) == 'B'))
1478                                 {
1479                                         v &= 0x000000FF;
1480                                         ln += 2;
1481                                 }
1482                                 else if ((*(ln + 1) == 'w') || (*(ln + 1) == 'W'))
1483                                 {
1484                                         v &= 0x0000FFFF;
1485                                         ln += 2;
1486                                 }
1487                                 else if ((*(ln + 1) == 'l') || (*(ln + 1) == 'L'))
1488                                 {
1489                                         ln += 2;
1490                                 }
1491                         }
1492
1493                         *tk++ = CONST;
1494                         *tk++ = v;
1495 //printf("CONST: %i\n", v);
1496                         continue;
1497                 }
1498
1499                 // Handle illegal character
1500                 return error("illegal character");
1501         }
1502
1503         // Terminate line of tokens and return "success."
1504
1505 goteol:
1506         tok = etok;                                                             // Set tok to beginning of line
1507
1508         if (stuffnull)                                                  // Terminate last SYMBOL
1509                 *nullspot = EOS;
1510
1511         *tk++ = EOL;
1512
1513         return OK;
1514 }
1515
1516
1517 //
1518 // .GOTO <label>        goto directive
1519 //
1520 // The label is searched for starting from the first line of the current,
1521 // enclosing macro definition. If no enclosing macro exists, an error is
1522 // generated.
1523 //
1524 // A label is of the form:
1525 //
1526 // :<name><whitespace>
1527 //
1528 // The colon must appear in column 1.  The label is stripped prior to macro
1529 // expansion, and is NOT subject to macro expansion.  The whitespace may also
1530 // be EOL.
1531 //
1532 //int d_goto(WORD siz) {
1533 //int d_goto(void)
1534 int d_goto(WORD unused)
1535 {
1536         char * s1, * s2;
1537
1538         // Setup for the search
1539         if (*tok != SYMBOL)
1540                 return error("missing label");
1541
1542 //      sym = (char *)tok[1];
1543         char * sym = string[tok[1]];
1544         tok += 2;
1545
1546         if (cur_inobj->in_type != SRC_IMACRO)
1547                 return error("goto not in macro");
1548
1549         IMACRO * imacro = cur_inobj->inobj.imacro;
1550 //      defln = (LONG *)imacro->im_macro->svalue;
1551         struct LineList * defln = imacro->im_macro->lineList;
1552
1553         // Find the label, starting with the first line.
1554 //      for(; defln!=NULL; defln=(LONG *)*defln)
1555         for(; defln!=NULL; defln=defln->next)
1556         {
1557 //              if (*(char *)(defln + 1) == ':')
1558                 if (defln->line[0] == ':')
1559                 {
1560                         // Compare names (sleazo string compare)
1561                         // This string compare is not right. Doesn't check for lengths.
1562                         // (actually it does, but in a crappy, unclear way.)
1563 WARNING(!!!! Bad string comparison !!!)
1564                         s1 = sym;
1565 //                      s2 = (char *)(defln + 1) + 1;
1566                         s2 = defln->line;
1567
1568                         while (*s1 == *s2)
1569                         {
1570                                 if (*s1 == EOS)
1571                                         break;
1572                                 else
1573                                 {
1574                                         s1++;
1575                                         s2++;
1576                                 }
1577                         }
1578
1579                         // Found the label, set new macro next-line and return.
1580                         if ((*s2 == EOS) || ((int)chrtab[*s2] & WHITE))
1581                         {
1582                                 imacro->im_nextln = defln;
1583                                 return 0;
1584                         }
1585                 }
1586         }
1587
1588         return error("goto label not found");
1589 }
1590
1591
1592 void DumpTokenBuffer(void)
1593 {
1594         TOKEN * t;
1595         printf("Tokens [%X]: ", sloc);
1596
1597         for(t=tokbuf; *t!=EOL; t++)
1598         {
1599                 if (*t == COLON)
1600                         printf("[COLON]");
1601                 else if (*t == CONST)
1602                 {
1603                         t++;
1604                         printf("[CONST: $%X]", (uint32_t)*t);
1605                 }
1606                 else if (*t == ACONST)
1607                         printf("[ACONST]");
1608                 else if (*t == STRING)
1609                 {
1610                         t++;
1611                         printf("[STRING:\"%s\"]", string[*t]);
1612                 }
1613                 else if (*t == SYMBOL)
1614                 {
1615                         t++;
1616                         printf("[SYMBOL:\"%s\"]", string[*t]);
1617                 }
1618                 else if (*t == EOS)
1619                         printf("[EOS]");
1620                 else if (*t == TKEOF)
1621                         printf("[TKEOF]");
1622                 else if (*t == DEQUALS)
1623                         printf("[DEQUALS]");
1624                 else if (*t == SET)
1625                         printf("[SET]");
1626                 else if (*t == REG)
1627                         printf("[REG]");
1628                 else if (*t == DCOLON)
1629                         printf("[DCOLON]");
1630                 else if (*t == GE)
1631                         printf("[GE]");
1632                 else if (*t == LE)
1633                         printf("[LE]");
1634                 else if (*t == NE)
1635                         printf("[NE]");
1636                 else if (*t == SHR)
1637                         printf("[SHR]");
1638                 else if (*t == SHL)
1639                         printf("[SHL]");
1640                 else if (*t == UNMINUS)
1641                         printf("[UNMINUS]");
1642                 else if (*t == DOTB)
1643                         printf("[DOTB]");
1644                 else if (*t == DOTW)
1645                         printf("[DOTW]");
1646                 else if (*t == DOTL)
1647                         printf("[DOTL]");
1648                 else if (*t == DOTI)
1649                         printf("[DOTI]");
1650                 else if (*t == ENDEXPR)
1651                         printf("[ENDEXPR]");
1652                 else if (*t == CR_ABSCOUNT)
1653                         printf("[CR_ABSCOUNT]");
1654                 else if (*t == CR_DEFINED)
1655                         printf("[CR_DEFINED]");
1656                 else if (*t == CR_REFERENCED)
1657                         printf("[CR_REFERENCED]");
1658                 else if (*t == CR_STREQ)
1659                         printf("[CR_STREQ]");
1660                 else if (*t == CR_MACDEF)
1661                         printf("[CR_MACDEF]");
1662                 else if (*t == CR_TIME)
1663                         printf("[CR_TIME]");
1664                 else if (*t == CR_DATE)
1665                         printf("[CR_DATE]");
1666                 else if (*t >= 0x20 && *t <= 0x2F)
1667                         printf("[%c]", (char)*t);
1668                 else if (*t >= 0x3A && *t <= 0x3F)
1669                         printf("[%c]", (char)*t);
1670                 else if (*t >= 0x80 && *t <= 0x87)
1671                         printf("[D%u]", ((uint32_t)*t) - 0x80);
1672                 else if (*t >= 0x88 && *t <= 0x8F)
1673                         printf("[A%u]", ((uint32_t)*t) - 0x88);
1674                 else
1675                         printf("[%X:%c]", (uint32_t)*t, (char)*t);
1676         }
1677
1678         printf("[EOL]\n");
1679 }
1680