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

   1 //
   2 // RMAC - Reboot's Macro Assembler for all Atari computers
   3 // TOKEN.C - Token Handling
   4 // Copyright (C) 199x Landon Dyer, 2011-2019 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
  11 #include <errno.h>
  12 #include "direct.h"
  13 #include "error.h"
  14 #include "macro.h"
  15 #include "procln.h"
  16 #include "sect.h"
  17 #include "symbol.h"
  18
  19 #define DECL_KW                         // Declare keyword arrays
  20 #define DEF_KW                          // Declare keyword values
  21 #include "kwtab.h"                      // Incl generated keyword tables & defs
  22
  23
  24 int lnsave;                                     // 1; strcpy() text of current line
  25 uint16_t curlineno;                     // Current line number (64K max currently)
  26 int totlines;                           // Total # of lines
  27 int mjump_align = 0;            // mjump alignment flag
  28 char lntag;                                     // Line tag
  29 char * curfname;                        // Current filename
  30 char tolowertab[128];           // Uppercase ==> lowercase
  31 int8_t hextab[128];                     // Table of hex values
  32 char dotxtab[128];                      // Table for ".b", ".s", etc.
  33 char irbuf[LNSIZ];                      // Text for .rept block line
  34 char lnbuf[LNSIZ];                      // Text of current line
  35 WORD filecount;                         // Unique file number counter
  36 WORD cfileno;                           // Current file number
  37 TOKEN * tok;                            // Ptr to current token
  38 TOKEN * etok;                           // Ptr past last token in tokbuf[]
  39 TOKEN tokeol[1] = {EOL};        // Bailout end-of-line token
  40 char * string[TOKBUFSIZE*2];// Token buffer string pointer storage
  41 int optimizeOff;                        // Optimization override flag
  42
  43 // File record, used to maintain a list of every include file ever visited
  44 #define FILEREC struct _filerec
  45 FILEREC
  46 {
  47    FILEREC * frec_next;
  48    char * frec_name;
  49 };
  50
  51 FILEREC * filerec;
  52 FILEREC * last_fr;
  53
  54 INOBJ * cur_inobj;                      // Ptr current input obj (IFILE/IMACRO)
  55 static INOBJ * f_inobj;         // Ptr list of free INOBJs
  56 static IFILE * f_ifile;         // Ptr list of free IFILEs
  57 static IMACRO * f_imacro;       // Ptr list of free IMACROs
  58
  59 static TOKEN tokbuf[TOKBUFSIZE];        // Token buffer (stack-like, all files)
  60
  61 uint8_t chrtab[0x100] = {
  62         ILLEG, ILLEG, ILLEG, ILLEG,                     // NUL SOH STX ETX
  63         ILLEG, ILLEG, ILLEG, ILLEG,                     // EOT ENQ ACK BEL
  64         ILLEG, WHITE, ILLEG, ILLEG,                     // BS HT LF VT
  65         WHITE, ILLEG, ILLEG, ILLEG,                     // FF CR SO SI
  66
  67         ILLEG, ILLEG, ILLEG, ILLEG,                     // DLE DC1 DC2 DC3
  68         ILLEG, ILLEG, ILLEG, ILLEG,                     // DC4 NAK SYN ETB
  69         ILLEG, ILLEG, ILLEG, ILLEG,                     // CAN EM SUB ESC
  70         ILLEG, ILLEG, ILLEG, ILLEG,                     // FS GS RS US
  71
  72         WHITE, MULTX, MULTX, SELF,                      // SP ! " #
  73         MULTX+CTSYM, MULTX, SELF, MULTX,        // $ % & '
  74         SELF, SELF, SELF, SELF,                         // ( ) * +
  75         SELF, SELF, STSYM, SELF,                        // , - . /
  76
  77         DIGIT+HDIGIT+CTSYM, DIGIT+HDIGIT+CTSYM,         // 0 1
  78         DIGIT+HDIGIT+CTSYM, DIGIT+HDIGIT+CTSYM,         // 2 3
  79         DIGIT+HDIGIT+CTSYM, DIGIT+HDIGIT+CTSYM,         // 4 5
  80         DIGIT+HDIGIT+CTSYM, DIGIT+HDIGIT+CTSYM,         // 6 7
  81         DIGIT+HDIGIT+CTSYM, DIGIT+HDIGIT+CTSYM,         // 8 9
  82         MULTX, MULTX,                                                           // : ;
  83         MULTX, MULTX, MULTX, STSYM+CTSYM,                       // < = > ?
  84
  85         MULTX, STSYM+CTSYM+HDIGIT,                                      // @ A
  86         DOT+STSYM+CTSYM+HDIGIT, STSYM+CTSYM+HDIGIT,     // B C
  87         DOT+STSYM+CTSYM+HDIGIT, STSYM+CTSYM+HDIGIT,     // D E
  88         STSYM+CTSYM+HDIGIT, STSYM+CTSYM,                        // F G
  89         STSYM+CTSYM, DOT+STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, // H I J K
  90         DOT+STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, // L M N O
  91
  92         DOT+STSYM+CTSYM, DOT+STSYM+CTSYM, STSYM+CTSYM, DOT+STSYM+CTSYM, // P Q R S
  93         STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, DOT+STSYM+CTSYM, // T U V W
  94         STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, SELF,// X Y Z [
  95         SELF, SELF, MULTX, STSYM+CTSYM,                         // \ ] ^ _
  96
  97         ILLEG, STSYM+CTSYM+HDIGIT,                                      // ` a
  98         DOT+STSYM+CTSYM+HDIGIT, STSYM+CTSYM+HDIGIT,     // b c
  99         DOT+STSYM+CTSYM+HDIGIT, STSYM+CTSYM+HDIGIT,     // d e
 100         STSYM+CTSYM+HDIGIT, STSYM+CTSYM,                        // f g
 101         STSYM+CTSYM, DOT+STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, // h i j k
 102         DOT+STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, // l m n o
 103
 104         DOT+STSYM+CTSYM, DOT+STSYM+CTSYM, STSYM+CTSYM, DOT+STSYM+CTSYM, // p q r s
 105         STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, DOT+STSYM+CTSYM, // t u v w
 106         DOT+STSYM+CTSYM, STSYM+CTSYM, STSYM+CTSYM, SELF,                // x y z {
 107         SELF, SELF, SELF, ILLEG,                                        // | } ~ DEL
 108
 109         // Anything above $7F is illegal (and yes, we need to check for this,
 110         // otherwise you get strange and spurious errors that will lead you astray)
 111         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 112         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 113         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 114         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 115         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 116         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 117         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 118         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 119         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 120         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 121         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 122         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 123         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 124         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 125         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG,
 126         ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG, ILLEG
 127 };
 128
 129 // Names of registers
 130 static char * regname[] = {
 131         "d0","d1","d2","d3","d4","d5","d6","d7", // 128,135
 132         "a0","a1","a2","a3","a4","a5","a6","sp", // 136,143
 133         "ssp","pc","sr","ccr","regequ","set","reg","r0", // 144,151
 134         "r1","r2","r3","r4","r5","r6","r7","r8", // 152,159
 135         "r9","r10","r11","r12","r13","r14","r15","r16", // 160,167
 136         "r17","r18","r19","r20","r21","r22","r23","r24", // 168,175
 137         "r25","r26","r27","r28","r29","r30","r31","ccdef", // 176,183
 138         "usp","ic40","dc40","bc40","sfc","dfc","","vbr", // 184,191
 139         "cacr","caar","msp","isp","tc","itt0","itt1","dtt0", // 192,199
 140         "dtt1","mmusr","urp","srp","iacr0","iacr1","dacr0","dacr1", // 200,207
 141         "tt0","tt1","crp","","","","","", // 208,215
 142         "","","","","fpiar","fpsr","fpcr","", // 216,223
 143         "fp0","fp1","fp2","fp3","fp4","fp5","fp6","fp7", // 224,231
 144         "","","","","","","","", // 232,239
 145         "","","","","","","","", // 240,247
 146         "","","","","","","","", // 248,255
 147         "","","","","x0","x1","y0","y1", // 256,263
 148         "","b0","","b2","","b1","a","b", // 264,271
 149         "mr","omr","la","lc","ssh","ssl","ss","", // 272,279
 150         "n0","n1","n2","n3","n4","n5","n6","n7", // 280,287
 151         "m0","m1","m2","m3","m4","m5","m6","m7", // 288,295
 152         "","","","","","","l","p", // 296,303
 153         "mr","omr","la","lc","ssh","ssl","ss","", // 304,311
 154         "a10","b10","x","y","","","ab","ba"  // 312,319
 155 };
 156
 157 static char * riscregname[] = {
 158          "r0",  "r1",  "r2",  "r3",  "r4", "r5",   "r6",  "r7",
 159          "r8",  "r9", "r10", "r11", "r12", "r13", "r14", "r15",
 160         "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
 161         "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31"
 162 };
 163
 164
 165 //
 166 // Initialize tokenizer
 167 //
 168 void InitTokenizer(void)
 169 {
 170         int i;                                                                  // Iterator
 171         char * htab = "0123456789abcdefABCDEF"; // Hex character table
 172
 173         lnsave = 0;                                                             // Don't save lines
 174         curfname = "";                                                  // No file, empty filename
 175         filecount = (WORD)-1;
 176         cfileno = (WORD)-1;                                             // cfileno gets bumped to 0
 177         curlineno = 0;
 178         totlines = 0;
 179         etok = tokbuf;
 180         f_inobj = NULL;
 181         f_ifile = NULL;
 182         f_imacro = NULL;
 183         cur_inobj = NULL;
 184         filerec = NULL;
 185         last_fr = NULL;
 186         lntag = SPACE;
 187
 188         // Initialize hex, "dot" and tolower tables
 189         for(i=0; i<128; i++)
 190         {
 191                 hextab[i] = -1;
 192                 dotxtab[i] = 0;
 193                 tolowertab[i] = (char)i;
 194         }
 195
 196         for(i=0; htab[i]!=EOS; i++)
 197                 hextab[htab[i]] = (char)((i < 16) ? i : i - 6);
 198
 199         for(i='A'; i<='Z'; i++)
 200                 tolowertab[i] |= 0x20;
 201
 202         // These characters are legal immediately after a period
 203         dotxtab['b'] = DOTB;                                    // .b .B .s .S
 204         dotxtab['B'] = DOTB;
 205         //dotxtab['s'] = DOTB;
 206         //dotxtab['S'] = DOTB;
 207         dotxtab['w'] = DOTW;                                    // .w .W
 208         dotxtab['W'] = DOTW;
 209         dotxtab['l'] = DOTL;                                    // .l .L
 210         dotxtab['L'] = DOTL;
 211         dotxtab['i'] = DOTI;                                    // .i .I (WTF is this???)
 212         dotxtab['I'] = DOTI;
 213         dotxtab['D'] = DOTD;                                    // .d .D (double)
 214         dotxtab['d'] = DOTD;
 215         dotxtab['S'] = DOTS;                                    // .s .S
 216         dotxtab['s'] = DOTS;
 217         dotxtab['Q'] = DOTQ;                                    // .q .Q (quad word)
 218         dotxtab['q'] = DOTQ;
 219         dotxtab['X'] = DOTX;                                    // .x .x
 220         dotxtab['x'] = DOTX;
 221         dotxtab['P'] = DOTP;                                    // .p .P
 222         dotxtab['p'] = DOTP;
 223 }
 224
 225
 226 void SetFilenameForErrorReporting(void)
 227 {
 228         WORD fnum = cfileno;
 229
 230         // Check for absolute top filename (this should never happen)
 231         if (fnum == -1)
 232         {
 233                 curfname = "(*top*)";
 234                 return;
 235         }
 236
 237         FILEREC * fr = filerec;
 238
 239         // Advance to the correct record...
 240         while (fr != NULL && fnum != 0)
 241         {
 242                 fr = fr->frec_next;
 243                 fnum--;
 244         }
 245
 246         // Check for file # record not found (this should never happen either)
 247         if (fr == NULL)
 248         {
 249                 curfname = "(*NOT FOUND*)";
 250                 return;
 251         }
 252
 253         curfname = fr->frec_name;
 254 }
 255
 256
 257 //
 258 // Allocate an IFILE or IMACRO
 259 //
 260 INOBJ * a_inobj(int typ)
 261 {
 262         INOBJ * inobj;
 263         IFILE * ifile;
 264         IMACRO * imacro;
 265
 266         // Allocate and initialize INOBJ first
 267         if (f_inobj == NULL)
 268                 inobj = malloc(sizeof(INOBJ));
 269         else
 270         {
 271                 inobj = f_inobj;
 272                 f_inobj = f_inobj->in_link;
 273         }
 274
 275         switch (typ)
 276         {
 277         case SRC_IFILE:                                                 // Alloc and init an IFILE
 278                 if (f_ifile == NULL)
 279                         ifile = malloc(sizeof(IFILE));
 280                 else
 281                 {
 282                         ifile = f_ifile;
 283                         f_ifile = f_ifile->if_link;
 284                 }
 285
 286                 inobj->inobj.ifile = ifile;
 287                 break;
 288
 289         case SRC_IMACRO:                                                // Alloc and init an IMACRO
 290                 if (f_imacro == NULL)
 291                         imacro = malloc(sizeof(IMACRO));
 292                 else
 293                 {
 294                         imacro = f_imacro;
 295                         f_imacro = f_imacro->im_link;
 296                 }
 297
 298                 inobj->inobj.imacro = imacro;
 299                 break;
 300
 301         case SRC_IREPT:                                                 // Alloc and init an IREPT
 302                 inobj->inobj.irept = malloc(sizeof(IREPT));
 303                 DEBUG { printf("alloc IREPT\n"); }
 304                 break;
 305         }
 306
 307         // Install INOBJ on top of input stack
 308         inobj->in_ifent = ifent;                                // Record .if context on entry
 309         inobj->in_type = (WORD)typ;
 310         inobj->in_otok = tok;
 311         inobj->in_etok = etok;
 312         inobj->in_link = cur_inobj;
 313         cur_inobj = inobj;
 314
 315         return inobj;
 316 }
 317
 318
 319 //
 320 // Perform macro substitution from 'orig' to 'dest'. Return OK or some error.
 321 // A macro reference is in one of two forms:
 322 // \name <non-name-character>
 323 // \{name}
 324 // A doubled backslash (\\) is compressed to a single backslash (\).
 325 // Argument definitions have been pre-tokenized, so we have to turn them back
 326 // into text. This means that numbers, in particular, become hex, regardless of
 327 // their representation when the macro was invoked. This is a hack.
 328 // A label may appear at the beginning of the line:
 329 // :<name><whitespace>
 330 // (the colon must be in the first column). These labels are stripped before
 331 // macro expansion takes place.
 332 //
 333 int ExpandMacro(char * src, char * dest, int destsiz)
 334 {
 335         int i;
 336         int questmark;                  // \? for testing argument existence
 337         char mname[128];                // Assume max size of a formal arg name
 338         char numbuf[20];                // Buffer for text of CONSTs
 339         TOKEN * tk;
 340         SYM * arg;
 341         char ** symbolString;
 342
 343         DEBUG { printf("ExM: src=\"%s\"\n", src); }
 344
 345         IMACRO * imacro = cur_inobj->inobj.imacro;
 346         int macnum = (int)(imacro->im_macro->sattr);
 347
 348         char * dst = dest;                                              // Next dest slot
 349         char * edst = dest + destsiz - 1;               // End + 1(?) of dest buffer
 350
 351         // Check for (and skip over) any "label" on the line
 352         char * s = src;
 353         char * d = NULL;
 354
 355         if (*s == ':')
 356         {
 357                 while (*s != EOS && !(chrtab[*s] & WHITE))
 358                         s++;
 359
 360                 if (*s != EOS)
 361                         s++;                                                    // Skip first whitespace
 362         }
 363
 364         // Expand the rest of the line
 365         while (*s != EOS)
 366         {
 367                 // Copy single character
 368                 if (*s != '\\')
 369                 {
 370                         if (dst >= edst)
 371                                 goto overflow;
 372
 373                         // Skip comments in case a loose @ or \ is in there
 374                         // In that case the tokeniser was trying to expand it.
 375                         if ((*s == ';') || ((*s == '/') && (*(s + 1) == '/')))
 376                                 goto skipcomments;
 377
 378                         *dst++ = *s++;
 379                 }
 380                 // Do macro expansion
 381                 else
 382                 {
 383                         questmark = 0;
 384
 385                         // Do special cases
 386                         switch (*++s)
 387                         {
 388                         case '\\':                                              // \\, \ (collapse to single backslash)
 389                                 if (dst >= edst)
 390                                         goto overflow;
 391
 392                                 *dst++ = *s++;
 393                                 continue;
 394                         case '?':                                               // \? <macro>  set `questmark' flag
 395                                 s++;
 396                                 questmark = 1;
 397                                 break;
 398                         case '#':                                               // \#, number of arguments
 399                                 sprintf(numbuf, "%d", (int)imacro->im_nargs);
 400                                 goto copystr;
 401                         case '!':                                               // \! size suffix supplied on invocation
 402                                 switch ((int)imacro->im_siz)
 403                                 {
 404                                 case SIZN: d = "";   break;
 405                                 case SIZB: d = ".b"; break;
 406                                 case SIZW: d = ".w"; break;
 407                                 case SIZL: d = ".l"; break;
 408                                 }
 409
 410                                 goto copy_d;
 411                         case '~':                                               // ==> unique label string Mnnnn...
 412                                 sprintf(numbuf, "M%u", curuniq);
 413 copystr:
 414                                 d = numbuf;
 415 copy_d:
 416                                 s++;
 417
 418                                 while (*d != EOS)
 419                                 {
 420                                         if (dst >= edst)
 421                                                 goto overflow;
 422                                         else
 423                                                 *dst++ = *d++;
 424                                 }
 425
 426                                 continue;
 427                         case EOS:
 428                                 return error("missing argument name");
 429                         }
 430
 431                         // \n ==> argument number 'n', 0..9
 432                         if (chrtab[*s] & DIGIT)
 433                         {
 434                                 i = *s++ - '1';
 435
 436                                 if (i < 0)
 437                                         i = 9;
 438
 439                                 goto arg_num;
 440                         }
 441
 442                         // Get argument name: \name, \{name}
 443                         d = mname;
 444
 445                         // \label
 446                         if (*s != '{')
 447                         {
 448                                 do
 449                                 {
 450                                         *d++ = *s++;
 451                                 }
 452                                 while (chrtab[*s] & CTSYM);
 453                         }
 454                         // \\{label}
 455                         else
 456                         {
 457                                 for(++s; *s != EOS && *s != '}';)
 458                                         *d++ = *s++;
 459
 460                                 if (*s != '}')
 461                                         return error("missing closing brace ('}')");
 462                                 else
 463                                         s++;
 464                         }
 465
 466                         *d = EOS;
 467
 468                         // Lookup the argument and copy its (string) value into the
 469                         // destination string
 470                         DEBUG { printf("argument='%s'\n", mname); }
 471
 472                         if ((arg = lookup(mname, MACARG, macnum)) == NULL)
 473                                 return error("undefined argument: '%s'", mname);
 474                         else
 475                         {
 476                                 // Convert a string of tokens (terminated with EOL) back into
 477                                 // text. If an argument is out of range (not specified in the
 478                                 // macro invocation) then it is ignored.
 479                                 i = (int)arg->svalue;
 480 arg_num:
 481                                 DEBUG { printf("~argnumber=%d\n", i); }
 482                                 tk = NULL;
 483
 484                                 if (i < imacro->im_nargs)
 485                                 {
 486                                         tk = imacro->argument[i].token;
 487                                         symbolString = imacro->argument[i].string;
 488 //DEBUG
 489 //{
 490 //      printf("ExM: Preparing to parse argument #%u...\n", i);
 491 //      DumpTokens(tk);
 492 //}
 493                                 }
 494
 495                                 // \?arg yields:
 496                                 //    0  if the argument is empty or non-existant,
 497                                 //    1  if the argument is not empty
 498                                 if (questmark)
 499                                 {
 500                                         if (tk == NULL || *tk == EOL)
 501                                                 questmark = 0;
 502
 503                                         if (dst >= edst)
 504                                                 goto overflow;
 505
 506                                         *dst++ = (char)(questmark + '0');
 507                                         continue;
 508                                 }
 509
 510                                 // Argument # is in range, so expand it
 511                                 if (tk != NULL)
 512                                 {
 513                                         while (*tk != EOL)
 514                                         {
 515                                                 // Reverse-translation from a token number to a string.
 516                                                 // This is a hack. It might be better table-driven.
 517                                                 d = NULL;
 518
 519                                                 if ((*tk >= KW_D0) && !rdsp && !rgpu)
 520                                                 {
 521                                                         d = regname[(int)*tk++ - KW_D0];
 522                                                         goto strcopy;
 523                                                 }
 524                                                 else if ((*tk >= KW_R0) && (*tk <= KW_R31))
 525                                                 {
 526                                                         d = riscregname[(int)*tk++ - KW_R0];
 527                                                         goto strcopy;
 528                                                 }
 529                                                 else
 530                                                 {
 531                                                         switch ((int)*tk++)
 532                                                         {
 533                                                         case SYMBOL:
 534                                                                 d = symbolString[*tk++];
 535 DEBUG { printf("ExM: SYMBOL=\"%s\"", d); }
 536                                                                 break;
 537                                                         case STRING:
 538                                                                 d = symbolString[*tk++];
 539
 540                                                                 if (dst >= edst)
 541                                                                         goto overflow;
 542
 543                                                                 *dst++ = '"';
 544
 545                                                                 while (*d != EOS)
 546                                                                 {
 547                                                                         if (dst >= edst)
 548                                                                                 goto overflow;
 549                                                                         else
 550                                                                                 *dst++ = *d++;
 551                                                                 }
 552
 553                                                                 if (dst >= edst)
 554                                                                         goto overflow;
 555
 556                                                                 *dst++ = '"';
 557                                                                 continue;
 558                                                                 break;
 559 // Shamus: Changing the format specifier from %lx to %ux caused the assembler
 560 //         to choke on legitimate code... Need to investigate this further
 561 //         before changing anything else here!
 562                                                         case CONST:
 563 //                                                              sprintf(numbuf, "$%lx", (uint64_t)*tk++);
 564                                                                 sprintf(numbuf, "$%" PRIX64, (uint64_t)*tk++);
 565                                                                 tk++;
 566                                                                 d = numbuf;
 567                                                                 break;
 568                                                         case DEQUALS:
 569                                                                 d = "==";
 570                                                                 break;
 571                                                         case SET:
 572                                                                 d = "set";
 573                                                                 break;
 574                                                         case COLON:
 575                                                                 d = ":";
 576                                                                 break;
 577                                                         case DCOLON:
 578                                                                 d = "::";
 579                                                                 break;
 580                                                         case GE:
 581                                                                 d = ">=";
 582                                                                 break;
 583                                                         case LE:
 584                                                                 d = "<=";
 585                                                                 break;
 586                                                         case NE:
 587                                                                 d = "<>";
 588                                                                 break;
 589                                                         case SHR:
 590                                                                 d = ">>";
 591                                                                 break;
 592                                                         case SHL:
 593                                                                 d = "<<";
 594                                                                 break;
 595                                                         case DOTB:
 596                                                                 d = ".b";
 597                                                                 break;
 598                                                         case DOTW:
 599                                                                 d = ".w";
 600                                                                 break;
 601                                                         case DOTL:
 602                                                                 d = ".l";
 603                                                                 break;
 604                                                         case CR_ABSCOUNT:
 605                                                                 d = "^^abscount";
 606                                                                 break;
 607                                                         case CR_DATE:
 608                                                                 d = "^^date";
 609                                                                 break;
 610                                                         case CR_TIME:
 611                                                                 d = "^^time";
 612                                                                 break;
 613                                                         case CR_DEFINED:
 614                                                                 d = "^^defined ";
 615                                                                 break;
 616                                                         case CR_REFERENCED:
 617                                                                 d = "^^referenced ";
 618                                                                 break;
 619                                                         case CR_STREQ:
 620                                                                 d = "^^streq ";
 621                                                                 break;
 622                                                         case CR_MACDEF:
 623                                                                 d = "^^macdef ";
 624                                                                 break;
 625                                                         default:
 626                                                                 if (dst >= edst)
 627                                                                         goto overflow;
 628
 629                                                                 *dst++ = (char)*(tk - 1);
 630                                                                 break;
 631                                                         }
 632                                                 }
 633
 634                                                 // If 'd' != NULL, copy string to destination
 635                                                 if (d != NULL)
 636                                                 {
 637 strcopy:
 638                                                         DEBUG printf("d='%s'\n", d);
 639
 640                                                         while (*d != EOS)
 641                                                         {
 642                                                                 if (dst >= edst)
 643                                                                         goto overflow;
 644                                                                 else
 645                                                                         *dst++ = *d++;
 646                                                         }
 647                                                 }
 648                                         }
 649                                 }
 650                         }
 651                 }
 652         }
 653
 654 skipcomments:
 655
 656         *dst = EOS;
 657         DEBUG { printf("ExM: dst=\"%s\"\n", dest); }
 658         return OK;
 659
 660 overflow:
 661         *dst = EOS;
 662         DEBUG { printf("*** OVERFLOW LINE ***\n%s\n", dest); }
 663         return fatal("line too long as a result of macro expansion");
 664 }
 665
 666
 667 //
 668 // Get next line of text from a macro
 669 //
 670 char * GetNextMacroLine(void)
 671 {
 672         IMACRO * imacro = cur_inobj->inobj.imacro;
 673 //      LONG * strp = imacro->im_nextln;
 674         LLIST * strp = imacro->im_nextln;
 675
 676         if (strp == NULL)                                               // End-of-macro
 677                 return NULL;
 678
 679         imacro->im_nextln = strp->next;
 680 //      ExpandMacro((char *)(strp + 1), imacro->im_lnbuf, LNSIZ);
 681         ExpandMacro(strp->line, imacro->im_lnbuf, LNSIZ);
 682
 683         return imacro->im_lnbuf;
 684 }
 685
 686
 687 //
 688 // Get next line of text from a repeat block
 689 //
 690 char * GetNextRepeatLine(void)
 691 {
 692         IREPT * irept = cur_inobj->inobj.irept;
 693 //      LONG * strp = irept->ir_nextln;                 // initial null
 694
 695         // Do repeat at end of .rept block's string list
 696 //      if (strp == NULL)
 697         if (irept->ir_nextln == NULL)
 698         {
 699                 DEBUG { printf("back-to-top-of-repeat-block count=%d\n", (int)irept->ir_count); }
 700                 irept->ir_nextln = irept->ir_firstln;   // copy first line
 701
 702                 if (irept->ir_count-- == 0)
 703                 {
 704                         DEBUG { printf("end-repeat-block\n"); }
 705                         return NULL;
 706                 }
 707
 708 //              strp = irept->ir_nextln;
 709         }
 710         // Mark the current macro line in the irept object
 711         // This is probably overkill - a global variable
 712         // would suffice here (it only gets used during
 713         // error reporting anyway)
 714         irept->lineno = irept->ir_nextln->lineno;
 715
 716 //      strcpy(irbuf, (char *)(irept->ir_nextln + 1));
 717         strcpy(irbuf, irept->ir_nextln->line);
 718         DEBUG { printf("repeat line='%s'\n", irbuf); }
 719 //      irept->ir_nextln = (LONG *)*strp;
 720         irept->ir_nextln = irept->ir_nextln->next;
 721
 722         return irbuf;
 723 }
 724
 725
 726 //
 727 // Include a source file used at the root, and for ".include" files
 728 //
 729 int include(int handle, char * fname)
 730 {
 731         // Debug mode
 732         DEBUG { printf("[include: %s, cfileno=%u]\n", fname, cfileno); }
 733
 734         // Alloc and initialize include-descriptors
 735         INOBJ * inobj = a_inobj(SRC_IFILE);
 736         IFILE * ifile = inobj->inobj.ifile;
 737
 738         ifile->ifhandle = handle;                       // Setup file handle
 739         ifile->ifind = ifile->ifcnt = 0;        // Setup buffer indices
 740         ifile->ifoldlineno = curlineno;         // Save old line number
 741         ifile->ifoldfname = curfname;           // Save old filename
 742         ifile->ifno = cfileno;                          // Save old file number
 743
 744         // NB: This *must* be preincrement, we're adding one to the filecount here!
 745         cfileno = ++filecount;                          // Compute NEW file number
 746         curfname = strdup(fname);                       // Set current filename (alloc storage)
 747         curlineno = 0;                                          // Start on line zero
 748
 749         // Add another file to the file-record
 750         FILEREC * fr = (FILEREC *)malloc(sizeof(FILEREC));
 751         fr->frec_next = NULL;
 752         fr->frec_name = curfname;
 753
 754         if (last_fr == NULL)
 755                 filerec = fr;                                   // Add first filerec
 756         else
 757                 last_fr->frec_next = fr;                // Append to list of filerecs
 758
 759         last_fr = fr;
 760         DEBUG { printf("[include: curfname: %s, cfileno=%u]\n", curfname, cfileno); }
 761
 762         return OK;
 763 }
 764
 765
 766 //
 767 // Pop the current input level
 768 //
 769 int fpop(void)
 770 {
 771         INOBJ * inobj = cur_inobj;
 772
 773         if (inobj == NULL)
 774                 return 0;
 775
 776         // Pop IFENT levels until we reach the conditional assembly context we
 777         // were at when the input object was entered.
 778         int numUnmatched = 0;
 779
 780         while (ifent != inobj->in_ifent)
 781         {
 782                 if (d_endif() != 0)     // Something bad happened during endif parsing?
 783                         return -1;              // If yes, bail instead of getting stuck in a loop
 784
 785                 numUnmatched++;
 786         }
 787
 788         // Give a warning to the user that we had to wipe their bum for them
 789         if (numUnmatched > 0)
 790                 warn("missing %d .endif(s)", numUnmatched);
 791
 792         tok = inobj->in_otok;   // Restore tok and otok
 793         etok = inobj->in_etok;
 794
 795         switch (inobj->in_type)
 796         {
 797         case SRC_IFILE:                 // Pop and release an IFILE
 798         {
 799                 DEBUG { printf("[Leaving: %s]\n", curfname); }
 800
 801                 IFILE * ifile = inobj->inobj.ifile;
 802                 ifile->if_link = f_ifile;
 803                 f_ifile = ifile;
 804                 close(ifile->ifhandle);                 // Close source file
 805 DEBUG { printf("[fpop (pre):  curfname=%s]\n", curfname); }
 806                 curfname = ifile->ifoldfname;   // Set current filename
 807 DEBUG { printf("[fpop (post): curfname=%s]\n", curfname); }
 808 DEBUG { printf("[fpop: (pre)  cfileno=%d ifile->ifno=%d]\n", (int)cfileno, (int)ifile->ifno); }
 809                 curlineno = ifile->ifoldlineno; // Set current line#
 810                 DEBUG { printf("cfileno=%d ifile->ifno=%d\n", (int)cfileno, (int)ifile->ifno); }
 811                 cfileno = ifile->ifno;                  // Restore current file number
 812 DEBUG { printf("[fpop: (post) cfileno=%d ifile->ifno=%d]\n", (int)cfileno, (int)ifile->ifno); }
 813                 break;
 814         }
 815
 816         case SRC_IMACRO:                                        // Pop and release an IMACRO
 817         {
 818                 IMACRO * imacro = inobj->inobj.imacro;
 819                 imacro->im_link = f_imacro;
 820                 f_imacro = imacro;
 821                 break;
 822         }
 823
 824         case SRC_IREPT:                                         // Pop and release an IREPT
 825         {
 826                 DEBUG { printf("dealloc IREPT\n"); }
 827                 LLIST * p = inobj->inobj.irept->ir_firstln;
 828
 829                 // Deallocate repeat lines
 830                 while (p != NULL)
 831                 {
 832                         free(p->line);
 833                         p = p->next;
 834                 }
 835
 836                 break;
 837         }
 838         }
 839
 840         cur_inobj = inobj->in_link;
 841         inobj->in_link = f_inobj;
 842         f_inobj = inobj;
 843
 844         return 0;
 845 }
 846
 847
 848 //
 849 // Get line from file into buf, return NULL on EOF or ptr to the start of a
 850 // null-term line
 851 //
 852 char * GetNextLine(void)
 853 {
 854         int i, j;
 855         char * p, * d;
 856         int readamt = -1;                                               // 0 if last read() yeilded 0 bytes
 857         IFILE * fl = cur_inobj->inobj.ifile;
 858
 859         for(;;)
 860         {
 861                 // Scan for next end-of-line; handle stupid text formats by treating
 862                 // \r\n the same as \n. (lone '\r' at end of buffer means we have to
 863                 // check for '\n').
 864                 d = &fl->ifbuf[fl->ifind];
 865
 866                 for(p=d, i=0, j=fl->ifcnt; i<j; i++, p++)
 867                 {
 868                         if (*p == '\r' || *p == '\n')
 869                         {
 870                                 i++;
 871
 872                                 if (*p == '\r')
 873                                 {
 874                                         if (i >= j)
 875                                                 break;  // Need to read more, then look for '\n' to eat
 876                                         else if (p[1] == '\n')
 877                                                 i++;
 878                                 }
 879
 880                                 // Cover up the newline with end-of-string sentinel
 881                                 *p = '\0';
 882
 883                                 fl->ifind += i;
 884                                 fl->ifcnt -= i;
 885                                 return d;
 886                         }
 887                 }
 888
 889                 // Handle hanging lines by ignoring them (Input file is exhausted, no
 890                 // \r or \n on last line)
 891                 // Shamus: This is retarded. Never ignore any input!
 892                 if (!readamt && fl->ifcnt)
 893                 {
 894 #if 0
 895                         fl->ifcnt = 0;
 896                         *p = '\0';
 897                         return NULL;
 898 #else
 899                         // Really should check to see if we're at the end of the buffer!
 900                         // :-P
 901                         fl->ifbuf[fl->ifind + fl->ifcnt] = '\0';
 902                         fl->ifcnt = 0;
 903                         return &fl->ifbuf[fl->ifind];
 904 #endif
 905                 }
 906
 907                 // Truncate and return absurdly long lines.
 908                 if (fl->ifcnt >= QUANTUM)
 909                 {
 910                         fl->ifbuf[fl->ifind + fl->ifcnt - 1] = '\0';
 911                         fl->ifcnt = 0;
 912                         return &fl->ifbuf[fl->ifind];
 913                 }
 914
 915                 // Relocate what's left of a line to the beginning of the buffer, and
 916                 // read some more of the file in; return NULL if the buffer's empty and
 917                 // on EOF.
 918                 if (fl->ifind != 0)
 919                 {
 920                         p = &fl->ifbuf[fl->ifind];
 921                         d = &fl->ifbuf[fl->ifcnt & 1];
 922
 923                         for(i=0; i<fl->ifcnt; i++)
 924                                 *d++ = *p++;
 925
 926                         fl->ifind = fl->ifcnt & 1;
 927                 }
 928
 929                 readamt = read(fl->ifhandle, &fl->ifbuf[fl->ifind + fl->ifcnt], QUANTUM);
 930
 931                 if (readamt < 0)
 932                         return NULL;
 933
 934                 if ((fl->ifcnt += readamt) == 0)
 935                         return NULL;
 936         }
 937 }
 938
 939
 940 //
 941 // Tokenize a line
 942 //
 943 int TokenizeLine(void)
 944 {
 945         uint8_t * ln = NULL;            // Ptr to current position in line
 946         uint8_t * p;                            // Random character ptr
 947         PTR tk;                                         // Token-deposit ptr
 948         int state = 0;                          // State for keyword detector
 949         int j = 0;                                      // Var for keyword detector
 950         uint8_t c;                                      // Random char
 951         uint64_t v;                                     // Random value
 952         uint32_t cursize = 0;           // Current line's size (.b, .w, .l, .s, .q, .d)
 953         double f;                                       // Random float
 954         uint8_t * nullspot = NULL;      // Spot to clobber for SYMBOL termination
 955         int stuffnull;                          // 1:terminate SYMBOL '\0' at *nullspot
 956         uint8_t c1;
 957         int stringNum = 0;                      // Pointer to string locations in tokenized line
 958
 959 retry:
 960
 961         if (cur_inobj == NULL)          // Return EOF if input stack is empty
 962                 return TKEOF;
 963
 964         // Get another line of input from the current input source: a file, a
 965         // macro, or a repeat-block
 966         switch (cur_inobj->in_type)
 967         {
 968         // Include-file:
 969         // o  handle EOF;
 970         // o  bump source line number;
 971         // o  tag the listing-line with a space;
 972         // o  kludge lines generated by Alcyon C.
 973         case SRC_IFILE:
 974                 if ((ln = GetNextLine()) == NULL)
 975                 {
 976 DEBUG { printf("TokenizeLine: Calling fpop() from SRC_IFILE...\n"); }
 977                         if (fpop() == 0)        // Pop input level
 978                                 goto retry;             // Try for more lines
 979                         else
 980                         {
 981                                 ifent->if_prev = (IFENT *)-1;   //Signal Assemble() that we have reached EOF with unbalanced if/endifs
 982                                 return TKEOF;
 983                         }
 984                 }
 985
 986                 curlineno++;                    // Bump line number
 987                 lntag = SPACE;
 988
 989                 if (as68_flag)
 990                 {
 991                         // AS68 compatibility, throw away all lines starting with
 992                         // back-quotes, tildes, or '*'
 993                         // On other lines, turn the first '*' into a semi-colon.
 994                         if (*ln == '`' || *ln == '~' || *ln == '*')
 995                                 *ln = ';';
 996                         else
 997                         {
 998                                 for(p=ln; *p!=EOS; p++)
 999                                 {
1000                                         if (*p == '*')
1001                                         {
1002                                                 *p = ';';
1003                                                 break;
1004                                         }
1005                                 }
1006                         }
1007                 }
1008
1009                 break;
1010
1011         // Macro-block:
1012         // o  Handle end-of-macro;
1013         // o  tag the listing-line with an at (@) sign.
1014         case SRC_IMACRO:
1015                 if ((ln = GetNextMacroLine()) == NULL)
1016                 {
1017                         if (ExitMacro() == 0)   // Exit macro (pop args, do fpop(), etc)
1018                                 goto retry;                     // Try for more lines...
1019                         else
1020                                 return TKEOF;           // Oops, we got a non zero return code, signal EOF
1021                 }
1022
1023                 lntag = '@';
1024                 break;
1025
1026         // Repeat-block:
1027         // o  Handle end-of-repeat-block;
1028         // o  tag the listing-line with a pound (#) sign.
1029         case SRC_IREPT:
1030                 if ((ln = GetNextRepeatLine()) == NULL)
1031                 {
1032                         DEBUG { printf("TokenizeLine: Calling fpop() from SRC_IREPT...\n"); }
1033                         fpop();
1034                         goto retry;
1035                 }
1036
1037                 lntag = '#';
1038                 break;
1039         }
1040
1041         // Save text of the line. We only do this during listings and within
1042         // macro-type blocks, since it is expensive to unconditionally copy every
1043         // line.
1044         if (lnsave)
1045                 strcpy(lnbuf, ln);
1046
1047         // General housekeeping
1048         tok = tokeol;                   // Set "tok" to EOL in case of error
1049         tk.u32 = etok;                  // Reset token ptr
1050         stuffnull = 0;                  // Don't stuff nulls
1051         totlines++;                             // Bump total #lines assembled
1052
1053         // See if the entire line is a comment. This is a win if the programmer
1054         // puts in lots of comments
1055         if (*ln == '*' || *ln == ';' || ((*ln == '/') && (*(ln + 1) == '/')))
1056                 goto goteol;
1057
1058         // And here we have a very ugly hack for signalling a single line 'turn off
1059         // optimization'. There's really no nice way to do this, so hack it is!
1060         optimizeOff = 0;                // Default is to take optimizations as they come
1061
1062         if (*ln == '!')
1063         {
1064                 optimizeOff = 1;        // Signal that we don't want to optimize this line
1065                 ln++;                           // & skip over the darned thing
1066         }
1067
1068         // Main tokenization loop;
1069         //  o  skip whitespace;
1070         //  o  handle end-of-line;
1071         //  o  handle symbols;
1072         //  o  handle single-character tokens (operators, etc.);
1073         //  o  handle multiple-character tokens (constants, strings, etc.).
1074         for(; *ln!=EOS;)
1075         {
1076                 // Skip whitespace, handle EOL
1077                 while (chrtab[*ln] & WHITE)
1078                         ln++;
1079
1080                 // Handle EOL, comment with ';'
1081                 if (*ln == EOS || *ln == ';'|| ((*ln == '/') && (*(ln + 1) == '/')))
1082                         break;
1083
1084                 // Handle start of symbol. Symbols are null-terminated in place. The
1085                 // termination is always one symbol behind, since there may be no place
1086                 // for a null in the case that an operator immediately follows the name.
1087                 c = chrtab[*ln];
1088
1089                 if (c & STSYM)
1090                 {
1091                         if (stuffnull)                  // Terminate old symbol from previous pass
1092                                 *nullspot = EOS;
1093
1094                         v = 0;                                  // Assume no DOT attrib follows symbol
1095                         stuffnull = 1;
1096
1097                         // In some cases, we need to check for a DOTx at the *beginning*
1098                         // of a symbol, as the "start" of the line we're currently looking
1099                         // at could be somewhere in the middle of that line!
1100                         if (*ln == '.')
1101                         {
1102                                 // Make sure that it's *only* a .[bwsl] following, and not the
1103                                 // start of a local symbol:
1104                                 if ((chrtab[*(ln + 1)] & DOT)
1105                                         && (dotxtab[*(ln + 1)] != 0)
1106                                         && !(chrtab[*(ln + 2)] & CTSYM))
1107                                 {
1108                                         // We found a legitimate DOTx construct, so add it to the
1109                                         // token stream:
1110                                         ln++;
1111                                         stuffnull = 0;
1112                                         *tk.u32++ = (TOKEN)dotxtab[*ln++];
1113                                         continue;
1114                                 }
1115                         }
1116
1117                         p = nullspot = ln++;    // Nullspot -> start of this symbol
1118
1119                         // Find end of symbol (and compute its length)
1120                         for(j=1; (int)chrtab[*ln]&CTSYM; j++)
1121                                 ln++;
1122
1123                         // Handle "DOT" special forms (like ".b") that follow a normal
1124                         // symbol or keyword:
1125                         if (*ln == '.')
1126                         {
1127                                 *ln++ = EOS;            // Terminate symbol
1128                                 stuffnull = 0;          // And never try it again
1129
1130                                 // Character following the '.' must have a DOT attribute, and
1131                                 // the chararacter after THAT one must not have a start-symbol
1132                                 // attribute (to prevent symbols that look like, for example,
1133                                 // "zingo.barf", which might be a good idea anyway....)
1134                                 if (((chrtab[*ln] & DOT) == 0) || (dotxtab[*ln] == 0))
1135                                         return error("[bwsl] must follow '.' in symbol");
1136
1137                                 v = (uint32_t)dotxtab[*ln++];
1138                                 cursize = (uint32_t)v;
1139
1140                                 if (chrtab[*ln] & CTSYM)
1141                                         return error("misuse of '.'; not allowed in symbols");
1142                         }
1143
1144                         // If the symbol is small, check to see if it's really the name of
1145                         // a register.
1146                         if (j <= KWSIZE)
1147                         {
1148                                 for(state=0; state>=0;)
1149                                 {
1150                                         j = (int)tolowertab[*p++];
1151                                         j += kwbase[state];
1152
1153                                         if (kwcheck[j] != state)
1154                                         {
1155                                                 j = -1;
1156                                                 break;
1157                                         }
1158
1159                                         if (*p == EOS || p == ln)
1160                                         {
1161                                                 j = kwaccept[j];
1162                                                 break;
1163                                         }
1164
1165                                         state = kwtab[j];
1166                                 }
1167                         }
1168                         else
1169                         {
1170                                 j = -1;
1171                         }
1172
1173                         // Make j = -1 if user tries to use a RISC register while in 68K mode
1174                         if (!(rgpu || rdsp || dsp56001) && ((TOKEN)j >= KW_R0 && (TOKEN)j <= KW_R31))
1175                         {
1176                                 j = -1;
1177                         }
1178
1179                         // Make j = -1 if time, date etc with no preceeding ^^
1180                         // defined, referenced, streq, macdef, date and time
1181                         switch ((TOKEN)j)
1182                         {
1183                         case 112:   // defined
1184                         case 113:   // referenced
1185                         case 118:   // streq
1186                         case 119:   // macdef
1187                         case 120:   // time
1188                         case 121:   // date
1189                                 j = -1;
1190                         }
1191
1192                         // If not tokenized keyword OR token was not found
1193                         if ((j < 0) || (state < 0))
1194                         {
1195                                 *tk.u32++ = SYMBOL;
1196                                 string[stringNum] = nullspot;
1197                                 *tk.u32++ = stringNum;
1198                                 stringNum++;
1199                         }
1200                         else
1201                         {
1202                                 *tk.u32++ = (TOKEN)j;
1203                                 stuffnull = 0;
1204                         }
1205
1206                         if (v)                  // Record attribute token (if any)
1207                                 *tk.u32++ = (TOKEN)v;
1208
1209                         if (stuffnull)  // Arrange for string termination on next pass
1210                                 nullspot = ln;
1211
1212                         continue;
1213                 }
1214
1215                 // Handle identity tokens
1216                 if (c & SELF)
1217                 {
1218                         *tk.u32++ = *ln++;
1219                         continue;
1220                 }
1221
1222                 // Handle multiple-character tokens
1223                 if (c & MULTX)
1224                 {
1225                         switch (*ln++)
1226                         {
1227                         case '!':               // ! or !=
1228                                 if (*ln == '=')
1229                                 {
1230                                         *tk.u32++ = NE;
1231                                         ln++;
1232                                 }
1233                                 else
1234                                         *tk.u32++ = '!';
1235
1236                                 continue;
1237                         case '\'':              // 'string'
1238                                 if (m6502)
1239                                 {
1240                                         // Hardcoded for now, maybe this will change in the future
1241                                         *tk.u32++ = STRINGA8;
1242                                         goto dostring;
1243                                 }
1244                                 // Fall through
1245                         case '\"':              // "string"
1246                                 *tk.u32++ = STRING;
1247 dostring:
1248                                 c1 = ln[-1];
1249                                 string[stringNum] = ln;
1250                                 *tk.u32++ = stringNum;
1251                                 stringNum++;
1252
1253                                 for(p=ln; *ln!=EOS && *ln!=c1;)
1254                                 {
1255                                         c = *ln++;
1256
1257                                         if (c == '\\')
1258                                         {
1259                                                 switch (*ln++)
1260                                                 {
1261                                                 case EOS:
1262                                                         return(error("unterminated string"));
1263                                                 case 'e':
1264                                                         c = '\033';
1265                                                         break;
1266                                                 case 'n':
1267                                                         c = '\n';
1268                                                         break;
1269                                                 case 'b':
1270                                                         c = '\b';
1271                                                         break;
1272                                                 case 't':
1273                                                         c = '\t';
1274                                                         break;
1275                                                 case 'r':
1276                                                         c = '\r';
1277                                                         break;
1278                                                 case 'f':
1279                                                         c = '\f';
1280                                                         break;
1281                                                 case '\"':
1282                                                         c = '\"';
1283                                                         break;
1284                                                 case '\'':
1285                                                         c = '\'';
1286                                                         break;
1287                                                 case '\\':
1288                                                         c = '\\';
1289                                                         break;
1290                                                 case '!':
1291                                                         // If we're evaluating a macro
1292                                                         // this is valid and expands to
1293                                                         // "dot-size"
1294                                                         break;
1295                                                 default:
1296                                                         warn("bad backslash code in string");
1297                                                         ln--;
1298                                                         break;
1299                                                 }
1300                                         }
1301
1302                                         *p++ = c;
1303                                 }
1304
1305                                 if (*ln++ != c1)
1306                                         return error("unterminated string");
1307
1308                                 *p++ = EOS;
1309                                 continue;
1310                         case '$':               // $, hex constant
1311                                 if (chrtab[*ln] & HDIGIT)
1312                                 {
1313                                         v = 0;
1314
1315                                         // Parse the hex value
1316                                         while (hextab[*ln] >= 0)
1317                                                 v = (v << 4) + (int)hextab[*ln++];
1318
1319                                         *tk.u32++ = CONST;
1320                                         *tk.u64++ = v;
1321
1322                                         if (*ln == '.')
1323                                         {
1324                                                 if ((*(ln + 1) == 'w') || (*(ln + 1) == 'W'))
1325                                                 {
1326                                                         *tk.u32++ = DOTW;
1327                                                         ln += 2;
1328                                                 }
1329                                                 else if ((*(ln + 1) == 'l') || (*(ln + 1) == 'L'))
1330                                                 {
1331                                                         *tk.u32++ = DOTL;
1332                                                         ln += 2;
1333                                                 }
1334                                         }
1335                                 }
1336                                 else
1337                                         *tk.u32++ = '$';
1338
1339                                 continue;
1340                         case '<':               // < or << or <> or <=
1341                                 switch (*ln)
1342                                 {
1343                                 case '<':
1344                                         *tk.u32++ = SHL;
1345                                         ln++;
1346                                         continue;
1347                                 case '>':
1348                                         *tk.u32++ = NE;
1349                                         ln++;
1350                                         continue;
1351                                 case '=':
1352                                         *tk.u32++ = LE;
1353                                         ln++;
1354                                         continue;
1355                                 default:
1356                                         *tk.u32++ = '<';
1357                                         continue;
1358                                 }
1359                         case ':':               // : or ::
1360                                 if (*ln == ':')
1361                                 {
1362                                         *tk.u32++ = DCOLON;
1363                                         ln++;
1364                                 }
1365                                 else
1366                                         *tk.u32++ = ':';
1367
1368                                 continue;
1369                         case '=':               // = or ==
1370                                 if (*ln == '=')
1371                                 {
1372                                         *tk.u32++ = DEQUALS;
1373                                         ln++;
1374                                 }
1375                                 else
1376                                         *tk.u32++ = '=';
1377
1378                                 continue;
1379                         case '>':               // > or >> or >=
1380                                 switch (*ln)
1381                                 {
1382                                 case '>':
1383                                         *tk.u32++ = SHR;
1384                                         ln++;
1385                                         continue;
1386                                 case '=':
1387                                         *tk.u32++ = GE;
1388                                         ln++;
1389                                         continue;
1390                                 default:
1391                                         *tk.u32++ = '>';
1392                                         continue;
1393                                 }
1394                         case '%':               // % or binary constant
1395                                 if (*ln < '0' || *ln > '1')
1396                                 {
1397                                         *tk.u32++ = '%';
1398                                         continue;
1399                                 }
1400
1401                                 v = 0;
1402
1403                                 while (*ln >= '0' && *ln <= '1')
1404                                         v = (v << 1) + *ln++ - '0';
1405
1406                                 if (*ln == '.')
1407                                 {
1408                                         if ((*(ln + 1) == 'b') || (*(ln + 1) == 'B'))
1409                                         {
1410                                                 v &= 0x000000FF;
1411                                                 ln += 2;
1412                                         }
1413
1414                                         if ((*(ln + 1) == 'w') || (*(ln + 1) == 'W'))
1415                                         {
1416                                                 v &= 0x0000FFFF;
1417                                                 ln += 2;
1418                                         }
1419
1420                                         if ((*(ln + 1) == 'l') || (*(ln + 1) == 'L'))
1421                                         {
1422                                                 v &= 0xFFFFFFFF;
1423                                                 ln += 2;
1424                                         }
1425                                 }
1426
1427                                 *tk.u32++ = CONST;
1428                                 *tk.u64++ = v;
1429                                 continue;
1430                         case '@':               // @ or octal constant
1431                                 if (*ln < '0' || *ln > '7')
1432                                 {
1433                                         *tk.u32++ = '@';
1434                                         continue;
1435                                 }
1436
1437                                 v = 0;
1438
1439                                 while (*ln >= '0' && *ln <= '7')
1440                                         v = (v << 3) + *ln++ - '0';
1441
1442                                 if (*ln == '.')
1443                                 {
1444                                         if ((*(ln + 1) == 'b') || (*(ln + 1) == 'B'))
1445                                         {
1446                                                 v &= 0x000000FF;
1447                                                 ln += 2;
1448                                         }
1449
1450                                         if ((*(ln + 1) == 'w') || (*(ln + 1) == 'W'))
1451                                         {
1452                                                 v &= 0x0000FFFF;
1453                                                 ln += 2;
1454                                         }
1455
1456                                         if ((*(ln + 1) == 'l') || (*(ln + 1) == 'L'))
1457                                         {
1458                                                 v &= 0xFFFFFFFF;
1459                                                 ln += 2;
1460                                         }
1461                                 }
1462
1463                                 *tk.u32++ = CONST;
1464                                 *tk.u64++ = v;
1465                                 continue;
1466                         case '^':               // ^ or ^^ <operator-name>
1467                                 if (*ln != '^')
1468                                 {
1469                                         *tk.u32++ = '^';
1470                                         continue;
1471                                 }
1472
1473                                 if (((int)chrtab[*++ln] & STSYM) == 0)
1474                                 {
1475                                         error("invalid symbol following ^^");
1476                                         continue;
1477                                 }
1478
1479                                 p = ln++;
1480
1481                                 while ((int)chrtab[*ln] & CTSYM)
1482                                         ++ln;
1483
1484                                 for(state=0; state>=0;)
1485                                 {
1486                                         // Get char, convert to lowercase
1487                                         j = *p++;
1488
1489                                         if (j >= 'A' && j <= 'Z')
1490                                                 j += 0x20;
1491
1492                                         j += kwbase[state];
1493
1494                                         if (kwcheck[j] != state)
1495                                         {
1496                                                 j = -1;
1497                                                 break;
1498                                         }
1499
1500                                         if (*p == EOS || p == ln)
1501                                         {
1502                                                 j = kwaccept[j];
1503                                                 break;
1504                                         }
1505
1506                                         state = kwtab[j];
1507                                 }
1508
1509                                 if (j < 0 || state < 0)
1510                                 {
1511                                         error("unknown symbol following ^^");
1512                                         continue;
1513                                 }
1514
1515                                 *tk.u32++ = (TOKEN)j;
1516                                 continue;
1517                         default:
1518                                 interror(2);    // Bad MULTX entry in chrtab
1519                                 continue;
1520                         }
1521                 }
1522
1523                 // Handle decimal constant
1524                 if (c & DIGIT)
1525                 {
1526                         uint8_t * numStart = ln;
1527                         v = 0;
1528
1529                         while ((int)chrtab[*ln] & DIGIT)
1530                                 v = (v * 10) + *ln++ - '0';
1531
1532                         // See if there's a .[bwl] after the constant & deal with it if so
1533                         if (*ln == '.')
1534                         {
1535                                 if ((*(ln + 1) == 'b') || (*(ln + 1) == 'B'))
1536                                 {
1537                                         v &= 0x000000FF;
1538                                         ln += 2;
1539                                         *tk.u32++ = CONST;
1540                                         *tk.u64++ = v;
1541                                         *tk.u32++ = DOTB;
1542                                 }
1543                                 else if ((*(ln + 1) == 'w') || (*(ln + 1) == 'W'))
1544                                 {
1545                                         v &= 0x0000FFFF;
1546                                         ln += 2;
1547                                         *tk.u32++ = CONST;
1548                                         *tk.u64++ = v;
1549                                         *tk.u32++ = DOTW;
1550                                 }
1551                                 else if ((*(ln + 1) == 'l') || (*(ln + 1) == 'L'))
1552                                 {
1553                                         v &= 0xFFFFFFFF;
1554                                         ln += 2;
1555                                         *tk.u32++ = CONST;
1556                                         *tk.u64++ = v;
1557                                         *tk.u32++ = DOTL;
1558                                 }
1559                                 else if ((int)chrtab[*(ln + 1)] & DIGIT)
1560                                 {
1561                                         // Hey, more digits after the dot, so we assume it's a
1562                                         // floating point number of some kind... numEnd will point
1563                                         // to the first non-float character after it's done
1564                                         char * numEnd;
1565                                         errno = 0;
1566                                         double f = strtod(numStart, &numEnd);
1567                                         ln = (uint8_t *)numEnd;
1568
1569                                         if (errno != 0)
1570                                                 return error("floating point parse error");
1571
1572                                         // N.B.: We use the C compiler's internal double
1573                                         //       representation for all internal float calcs and
1574                                         //       are reasonably sure that the size of said double
1575                                         //       is 8 bytes long (which we check for in fltpoint.c)
1576                                         *tk.u32++ = FCONST;
1577                                         *tk.dp = f;
1578                                         tk.u64++;
1579                                         continue;
1580                                 }
1581                         }
1582                         else
1583                         {
1584                                 *tk.u32++ = CONST;
1585                                 *tk.u64++ = v;
1586                         }
1587
1588 //printf("CONST: %i\n", v);
1589                         continue;
1590                 }
1591
1592                 // Handle illegal character
1593                 return error("illegal character $%02X found", *ln);
1594         }
1595
1596         // Terminate line of tokens and return "success."
1597
1598 goteol:
1599         tok = etok;                             // Set tok to beginning of line
1600
1601         if (stuffnull)                  // Terminate last SYMBOL
1602                 *nullspot = EOS;
1603
1604         *tk.u32++ = EOL;
1605
1606         return OK;
1607 }
1608
1609
1610 //
1611 // .GOTO <label>        goto directive
1612 //
1613 // The label is searched for starting from the first line of the current,
1614 // enclosing macro definition. If no enclosing macro exists, an error is
1615 // generated.
1616 //
1617 // A label is of the form:
1618 //
1619 // :<name><whitespace>
1620 //
1621 // The colon must appear in column 1.  The label is stripped prior to macro
1622 // expansion, and is NOT subject to macro expansion.  The whitespace may also
1623 // be EOL.
1624 //
1625 int d_goto(WORD unused)
1626 {
1627         // Setup for the search
1628         if (*tok != SYMBOL)
1629                 return error("missing label");
1630
1631         char * sym = string[tok[1]];
1632         tok += 2;
1633
1634         if (cur_inobj->in_type != SRC_IMACRO)
1635                 return error("goto not in macro");
1636
1637         IMACRO * imacro = cur_inobj->inobj.imacro;
1638         LLIST * defln = imacro->im_macro->lineList;
1639
1640         // Attempt to find the label, starting with the first line.
1641         for(; defln!=NULL; defln=defln->next)
1642         {
1643                 // Must start with a colon
1644                 if (defln->line[0] == ':')
1645                 {
1646                         // Compare names (sleazo string compare)
1647                         char * s1 = sym;
1648                         char * s2 = defln->line;
1649
1650                         // Either we will match the strings to EOS on both, or we will
1651                         // match EOS on string 1 to whitespace on string 2. Otherwise, we
1652                         // have no match.
1653                         while ((*s1 == *s2) || ((*s1 == EOS) && (chrtab[*s2] & WHITE)))
1654                         {
1655                                 // If we reached the end of string 1 (sym), we're done.
1656                                 // Note that we're also checking for the end of string 2 as
1657                                 // well, since we've established they're equal above.
1658                                 if (*s1 == EOS)
1659                                 {
1660                                         // Found the label, set new macro next-line and return.
1661                                         imacro->im_nextln = defln;
1662                                         return 0;
1663                                 }
1664
1665                                 s1++;
1666                                 s2++;
1667                         }
1668                 }
1669         }
1670
1671         return error("goto label not found");
1672 }
1673
1674
1675 void DumpToken(TOKEN t)
1676 {
1677         if (t == COLON)
1678                 printf("[COLON]");
1679         else if (t == CONST)
1680                 printf("[CONST]");
1681         else if (t == FCONST)
1682                 printf("[FCONST]");
1683         else if (t == ACONST)
1684                 printf("[ACONST]");
1685         else if (t == STRING)
1686                 printf("[STRING]");
1687         else if (t == SYMBOL)
1688                 printf("[SYMBOL]");
1689         else if (t == EOS)
1690                 printf("[EOS]");
1691         else if (t == TKEOF)
1692                 printf("[TKEOF]");
1693         else if (t == DEQUALS)
1694                 printf("[DEQUALS]");
1695         else if (t == SET)
1696                 printf("[SET]");
1697         else if (t == REG)
1698                 printf("[REG]");
1699         else if (t == DCOLON)
1700                 printf("[DCOLON]");
1701         else if (t == GE)
1702                 printf("[GE]");
1703         else if (t == LE)
1704                 printf("[LE]");
1705         else if (t == NE)
1706                 printf("[NE]");
1707         else if (t == SHR)
1708                 printf("[SHR]");
1709         else if (t == SHL)
1710                 printf("[SHL]");
1711         else if (t == UNMINUS)
1712                 printf("[UNMINUS]");
1713         else if (t == DOTB)
1714                 printf("[DOTB]");
1715         else if (t == DOTW)
1716                 printf("[DOTW]");
1717         else if (t == DOTL)
1718                 printf("[DOTL]");
1719         else if (t == DOTQ)
1720                 printf("[DOTQ]");
1721         else if (t == DOTS)
1722                 printf("[DOTS]");
1723         else if (t == DOTD)
1724                 printf("[DOTD]");
1725         else if (t == DOTI)
1726                 printf("[DOTI]");
1727         else if (t == ENDEXPR)
1728                 printf("[ENDEXPR]");
1729         else if (t == CR_ABSCOUNT)
1730                 printf("[CR_ABSCOUNT]");
1731         else if (t == CR_DEFINED)
1732                 printf("[CR_DEFINED]");
1733         else if (t == CR_REFERENCED)
1734                 printf("[CR_REFERENCED]");
1735         else if (t == CR_STREQ)
1736                 printf("[CR_STREQ]");
1737         else if (t == CR_MACDEF)
1738                 printf("[CR_MACDEF]");
1739         else if (t == CR_TIME)
1740                 printf("[CR_TIME]");
1741         else if (t == CR_DATE)
1742                 printf("[CR_DATE]");
1743         else if (t >= 0x20 && t <= 0x2F)
1744                 printf("[%c]", (char)t);
1745         else if (t >= 0x3A && t <= 0x3F)
1746                 printf("[%c]", (char)t);
1747         else if (t >= 0x80 && t <= 0x87)
1748                 printf("[D%u]", ((uint32_t)t) - 0x80);
1749         else if (t >= 0x88 && t <= 0x8F)
1750                 printf("[A%u]", ((uint32_t)t) - 0x88);
1751         else
1752                 printf("[%X:%c]", (uint32_t)t, (char)t);
1753 }
1754
1755
1756 void DumpTokenBuffer(void)
1757 {
1758         printf("Tokens [%X]: ", sloc);
1759
1760         for(TOKEN * t=tokbuf; *t!=EOL; t++)
1761         {
1762                 if (*t == COLON)
1763                         printf("[COLON]");
1764                 else if (*t == CONST)
1765                 {
1766                         PTR tp;
1767                         tp.u32 = t + 1;
1768                         printf("[CONST: $%lX]", *tp.u64);
1769                         t += 2;
1770                 }
1771                 else if (*t == FCONST)
1772                 {
1773                         PTR tp;
1774                         tp.u32 = t + 1;
1775                         printf("[FCONST: $%lX]", *tp.u64);
1776                         t += 2;
1777                 }
1778                 else if (*t == ACONST)
1779                 {
1780                         printf("[ACONST: $%X, $%X]", (uint32_t)t[1], (uint32_t)t[2]);
1781                         t += 2;
1782                 }
1783                 else if (*t == STRING)
1784                 {
1785                         t++;
1786                         printf("[STRING:\"%s\"]", string[*t]);
1787                 }
1788                 else if (*t == SYMBOL)
1789                 {
1790                         t++;
1791                         printf("[SYMBOL:\"%s\"]", string[*t]);
1792                 }
1793                 else if (*t == EOS)
1794                         printf("[EOS]");
1795                 else if (*t == TKEOF)
1796                         printf("[TKEOF]");
1797                 else if (*t == DEQUALS)
1798                         printf("[DEQUALS]");
1799                 else if (*t == SET)
1800                         printf("[SET]");
1801                 else if (*t == REG)
1802                         printf("[REG]");
1803                 else if (*t == DCOLON)
1804                         printf("[DCOLON]");
1805                 else if (*t == GE)
1806                         printf("[GE]");
1807                 else if (*t == LE)
1808                         printf("[LE]");
1809                 else if (*t == NE)
1810                         printf("[NE]");
1811                 else if (*t == SHR)
1812                         printf("[SHR]");
1813                 else if (*t == SHL)
1814                         printf("[SHL]");
1815                 else if (*t == UNMINUS)
1816                         printf("[UNMINUS]");
1817                 else if (*t == DOTB)
1818                         printf("[DOTB]");
1819                 else if (*t == DOTW)
1820                         printf("[DOTW]");
1821                 else if (*t == DOTL)
1822                         printf("[DOTL]");
1823                 else if (*t == DOTQ)
1824                         printf("[DOTQ]");
1825                 else if (*t == DOTS)
1826                         printf("[DOTS]");
1827                 else if (*t == DOTD)
1828                         printf("[DOTD]");
1829                 else if (*t == DOTI)
1830                         printf("[DOTI]");
1831                 else if (*t == ENDEXPR)
1832                         printf("[ENDEXPR]");
1833                 else if (*t == CR_ABSCOUNT)
1834                         printf("[CR_ABSCOUNT]");
1835                 else if (*t == CR_DEFINED)
1836                         printf("[CR_DEFINED]");
1837                 else if (*t == CR_REFERENCED)
1838                         printf("[CR_REFERENCED]");
1839                 else if (*t == CR_STREQ)
1840                         printf("[CR_STREQ]");
1841                 else if (*t == CR_MACDEF)
1842                         printf("[CR_MACDEF]");
1843                 else if (*t == CR_TIME)
1844                         printf("[CR_TIME]");
1845                 else if (*t == CR_DATE)
1846                         printf("[CR_DATE]");
1847                 else if (*t >= 0x20 && *t <= 0x2F)
1848                         printf("[%c]", (char)*t);
1849                 else if (*t >= 0x3A && *t <= 0x3F)
1850                         printf("[%c]", (char)*t);
1851                 else if (*t >= 0x80 && *t <= 0x87)
1852                         printf("[D%u]", ((uint32_t)*t) - 0x80);
1853                 else if (*t >= 0x88 && *t <= 0x8F)
1854                         printf("[A%u]", ((uint32_t)*t) - 0x88);
1855                 else
1856                         printf("[%X:%c]", (uint32_t)*t, (char)*t);
1857         }
1858
1859         printf("[EOL]\n");
1860 }
1861