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
15 #define DECL_KW // Declare keyword arrays
16 #define DEF_KW // Declare keyword values
17 #include "kwtab.h" // Incl generated keyword tables & defs
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
38 // File record, used to maintain a list of every include file ever visited
39 #define FILEREC struct _filerec
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
54 static TOKEN tokbuf[TOKBUFSIZE]; // Token buffer (stack-like, all files)
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
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
67 WHITE, MULTX, MULTX, SELF, // SP ! " #
68 MULTX+CTSYM, MULTX, SELF, MULTX, // $ % & '
69 SELF, SELF, SELF, SELF, // ( ) * +
70 SELF, SELF, STSYM, SELF, // , - . /
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
78 MULTX, MULTX, MULTX, STSYM+CTSYM, // < = > ?
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
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, // \ ] ^ _
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
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
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"
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"
121 // Initialize tokenizer
123 void InitTokenizer(void)
126 char * htab = "0123456789abcdefABCDEF"; // Hex character table
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
143 // Initialize hex, "dot" and tolower tables
148 tolowertab[i] = (char)i;
151 for(i=0; htab[i]!=EOS; i++)
152 hextab[htab[i]] = (char)((i < 16) ? i : i - 6);
154 for(i='A'; i<='Z'; i++)
155 tolowertab[i] |= 0x20;
157 // These characters are legal immediately after a period
158 dotxtab['b'] = DOTB; // .b .B .s .S
162 dotxtab['w'] = DOTW; // .w .W
164 dotxtab['l'] = DOTL; // .l .L
166 dotxtab['i'] = DOTI; // .i .I (???)
171 void SetFilenameForErrorReporting(void)
175 // Check for absolute top filename (this should never happen)
178 curfname = "(*top*)";
182 FILEREC * fr = filerec;
184 // Advance to the correct record...
185 while (fr != NULL && fnum != 0)
191 // Check for file # record not found (this should never happen either)
194 curfname = "(*NOT FOUND*)";
198 curfname = fr->frec_name;
203 // Allocate an IFILE or IMACRO
205 INOBJ * a_inobj(int typ)
211 // Allocate and initialize INOBJ first
213 inobj = malloc(sizeof(INOBJ));
217 f_inobj = f_inobj->in_link;
222 case SRC_IFILE: // Alloc and init an IFILE
224 ifile = malloc(sizeof(IFILE));
228 f_ifile = f_ifile->if_link;
231 inobj->inobj.ifile = ifile;
233 case SRC_IMACRO: // Alloc and init an IMACRO
234 if (f_imacro == NULL)
235 imacro = malloc(sizeof(IMACRO));
239 f_imacro = f_imacro->im_link;
242 inobj->inobj.imacro = imacro;
244 case SRC_IREPT: // Alloc and init an IREPT
245 inobj->inobj.irept = malloc(sizeof(IREPT));
246 DEBUG printf("alloc IREPT\n");
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;
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>
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.
276 int ExpandMacro(char * src, char * dest, int destsiz)
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
284 char ** symbolString;
286 DEBUG { printf("ExM: src=\"%s\"\n", src); }
288 IMACRO * imacro = cur_inobj->inobj.imacro;
289 int macnum = (int)(imacro->im_macro->sattr);
292 char * dst = dest; // Next dest slot
293 char * edst = dest + destsiz - 1; // End + 1(?) of dest buffer
295 // Check for (and skip over) any "label" on the line
301 while (*s != EOS && !(chrtab[*s] & WHITE))
305 s++; // Skip first whitespace
308 // Expand the rest of the line
311 // Copy single character
319 // Do macro expansion
327 case '\\': // \\, \ (collapse to single backslash)
333 case '?': // \? <macro> set `questmark' flag
337 case '#': // \#, number of arguments
338 sprintf(numbuf, "%d", (int)imacro->im_nargs);
340 case '!': // \! size suffix supplied on invocation
341 switch ((int)imacro->im_siz)
343 case SIZN: d = ""; break;
344 case SIZB: d = ".b"; break;
345 case SIZW: d = ".w"; break;
346 case SIZL: d = ".l"; break;
350 case '~': // ==> unique label string Mnnnn...
351 sprintf(numbuf, "M%u", curuniq);
367 return error("missing argument name");
370 // \n ==> argument number 'n', 0..9
371 if (chrtab[*s] & DIGIT)
381 // Get argument name: \name, \{name}
391 while (chrtab[*s] & CTSYM);
396 for(++s; *s != EOS && *s != '}';)
400 return error("missing '}'");
407 // Lookup the argument and copy its (string) value into the
408 // destination string
409 DEBUG printf("argument='%s'\n", mname);
411 if ((arg = lookup(mname, MACARG, macnum)) == NULL)
412 return errors("undefined argument: '%s'", mname);
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;
420 DEBUG printf("~argnumber=%d (argBase=%u)\n", i, imacro->argBase);
423 if (i < imacro->im_nargs)
428 tk = argPtrs[imacro->argBase + i];
430 tk = imacro->argument[i].token;
431 symbolString = imacro->argument[i].string;
434 // printf("ExM: Preparing to parse argument #%u...\n", i);
441 // 0 if the argument is empty or non-existant,
442 // 1 if the argument is not empty
445 if (tk == NULL || *tk == EOL)
451 *dst++ = (char)(questmark + '0');
455 // Argument # is in range, so expand it
460 // Reverse-translation from a token number to a string.
461 // This is a hack. It might be better table-driven.
464 if ((*tk >= KW_D0) && !rdsp && !rgpu)
466 d = regname[(int)*tk++ - KW_D0];
469 else if ((*tk >= KW_R0) && (*tk <= KW_R31))
471 d = riscregname[(int)*tk++ - KW_R0];
480 // d = (char *)*tk++;
483 // This fix should be done for strings too
484 d = symbolString[*tk++];
485 DEBUG printf("ExM: SYMBOL=\"%s\"", d);
490 // d = (char *)*tk++;
493 d = symbolString[*tk++];
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!
518 sprintf(numbuf, "$%lx", (LONG)*tk++);
579 *dst++ = (char)*(tk - 1);
584 // If 'd' != NULL, copy string to destination
588 DEBUG printf("d='%s'\n", d);
605 DEBUG { printf("ExM: dst=\"%s\"\n", dest); }
610 DEBUG printf("*** OVERFLOW LINE ***\n%s\n", dest);
611 return fatal("line too long as a result of macro expansion");
616 // Get next line of text from a macro
618 char * GetNextMacroLine(void)
620 unsigned source_addr;
622 IMACRO * imacro = cur_inobj->inobj.imacro;
623 // LONG * strp = imacro->im_nextln;
624 struct LineList * strp = imacro->im_nextln;
626 if (strp == NULL) // End-of-macro
629 // imacro->im_nextln = (LONG *)*strp;
630 imacro->im_nextln = strp->next;
631 // ExpandMacro((char *)(strp + 1), imacro->im_lnbuf, LNSIZ);
632 ExpandMacro(strp->line, imacro->im_lnbuf, LNSIZ);
634 return imacro->im_lnbuf;
639 // Get next line of text from a repeat block
641 char * GetNextRepeatLine(void)
644 IREPT * irept = cur_inobj->inobj.irept;
645 LONG * strp = irept->ir_nextln; // initial null
647 // Do repeat at end of .rept block's string list
650 DEBUG printf("back-to-top-of-repeat-block count=%d\n", (int)irept->ir_count);
651 irept->ir_nextln = irept->ir_firstln; // copy first line
653 if (irept->ir_count-- == 0)
655 DEBUG printf("end-repeat-block\n");
659 strp = irept->ir_nextln;
662 strcpy(irbuf, (char *)(irept->ir_nextln + 1));
663 DEBUG printf("repeat line='%s'\n", irbuf);
664 irept->ir_nextln = (LONG *)*strp;
671 // Include a source file used at the root, and for ".include" files
673 int include(int handle, char * fname)
681 printf("[include: %s, cfileno=%u]\n", fname, cfileno);
683 // Alloc and initialize include-descriptors
684 inobj = a_inobj(SRC_IFILE);
685 ifile = inobj->inobj.ifile;
687 ifile->ifhandle = handle; // Setup file handle
688 ifile->ifind = ifile->ifcnt = 0; // Setup buffer indices
689 ifile->ifoldlineno = curlineno; // Save old line number
690 ifile->ifoldfname = curfname; // Save old filename
691 ifile->ifno = cfileno; // Save old file number
693 // cfileno = filecount++; // Compute new file number
694 // NB: This *must* be preincrement, we're adding one to the filecount here!
695 cfileno = ++filecount; // Compute NEW file number
696 curfname = strdup(fname); // Set current filename (alloc storage)
697 curlineno = 0; // Start on line zero
699 // Add another file to the file-record
700 fr = (FILEREC *)malloc(sizeof(FILEREC));
701 fr->frec_next = NULL;
702 fr->frec_name = curfname;
705 filerec = fr; // Add first filerec
707 last_fr->frec_next = fr; // Append to list of filerecs
710 DEBUG printf("[include: curfname: %s, cfileno=%u]\n", curfname, cfileno);
717 // Pop the current input level
724 INOBJ * inobj = cur_inobj;
728 // Pop IFENT levels until we reach the conditional assembly context we
729 // were at when the input object was entered.
730 while (ifent != inobj->in_ifent)
733 tok = inobj->in_otok; // Restore tok and otok
734 etok = inobj->in_etok;
736 switch (inobj->in_type)
738 case SRC_IFILE: // Pop and release an IFILE
740 printf("[Leaving: %s]\n", curfname);
742 ifile = inobj->inobj.ifile;
743 ifile->if_link = f_ifile;
745 close(ifile->ifhandle); // Close source file
746 if (verb_flag) printf("[fpop (pre): curfname=%s]\n", curfname);
747 curfname = ifile->ifoldfname; // Set current filename
748 if (verb_flag) printf("[fpop (post): curfname=%s]\n", curfname);
749 if (verb_flag) printf("[fpop: (pre) cfileno=%d ifile->ifno=%d]\n", (int)cfileno, (int)ifile->ifno);
750 curlineno = ifile->ifoldlineno; // Set current line#
751 DEBUG printf("cfileno=%d ifile->ifno=%d\n", (int)cfileno, (int)ifile->ifno);
752 cfileno = ifile->ifno; // Restore current file number
753 if (verb_flag) printf("[fpop: (post) cfileno=%d ifile->ifno=%d]\n", (int)cfileno, (int)ifile->ifno);
755 case SRC_IMACRO: // Pop and release an IMACRO
756 imacro = inobj->inobj.imacro;
757 imacro->im_link = f_imacro;
760 case SRC_IREPT: // Pop and release an IREPT
761 DEBUG printf("dealloc IREPT\n");
762 p = inobj->inobj.irept->ir_firstln;
773 cur_inobj = inobj->in_link;
774 inobj->in_link = f_inobj;
783 // Get line from file into buf, return NULL on EOF or ptr to the start of a
786 char * GetNextLine(void)
790 int readamt = -1; // 0 if last read() yeilded 0 bytes
791 IFILE * fl = cur_inobj->inobj.ifile;
795 // Scan for next end-of-line; handle stupid text formats by treating
796 // \r\n the same as \n. (lone '\r' at end of buffer means we have to
798 d = &fl->ifbuf[fl->ifind];
800 for(p=d, i=0, j=fl->ifcnt; i<j; i++, p++)
802 if (*p == '\r' || *p == '\n')
809 break; // Need to read more, then look for '\n' to eat
810 else if (p[1] == '\n')
814 // Cover up the newline with end-of-string sentinel
823 // Handle hanging lines by ignoring them (Input file is exhausted, no
824 // \r or \n on last line)
825 // Shamus: This is retarded. Never ignore any input!
826 if (!readamt && fl->ifcnt)
833 // Really should check to see if we're at the end of the buffer!
835 fl->ifbuf[fl->ifind + fl->ifcnt] = '\0';
837 return &fl->ifbuf[fl->ifind];
841 // Truncate and return absurdly long lines.
842 if (fl->ifcnt >= QUANTUM)
844 fl->ifbuf[fl->ifind + fl->ifcnt - 1] = '\0';
846 return &fl->ifbuf[fl->ifind];
849 // Relocate what's left of a line to the beginning of the buffer, and
850 // read some more of the file in; return NULL if the buffer's empty and
854 p = &fl->ifbuf[fl->ifind];
855 d = &fl->ifbuf[fl->ifcnt & 1];
857 for(i=0; i<fl->ifcnt; i++)
860 fl->ifind = fl->ifcnt & 1;
863 readamt = read(fl->ifhandle, &fl->ifbuf[fl->ifind + fl->ifcnt], QUANTUM);
868 if ((fl->ifcnt += readamt) == 0)
877 int TokenizeLine(void)
879 char * ln = NULL; // Ptr to current position in line
880 char * p; // Random character ptr
881 TOKEN * tk; // Token-deposit ptr
882 int state = 0; // State for keyword detector
883 int j = 0; // Var for keyword detector
884 char c; // Random char
885 VALUE v; // Random value
886 char * nullspot = NULL; // Spot to clobber for SYMBOL termination
887 int stuffnull; // 1:terminate SYMBOL '\0' at *nullspot
889 int stringNum = 0; // Pointer to string locations in tokenized line
893 if (cur_inobj == NULL) // Return EOF if input stack is empty
896 // Get another line of input from the current input source: a file, a
897 // macro, or a repeat-block
898 switch (cur_inobj->in_type)
902 // o bump source line number;
903 // o tag the listing-line with a space;
904 // o kludge lines generated by Alcyon C.
906 if ((ln = GetNextLine()) == NULL)
908 if (verb_flag) printf("TokenizeLine: Calling fpop() from SRC_IFILE...\n");
909 fpop(); // Pop input level
910 goto retry; // Try for more lines
913 curlineno++; // Bump line number
918 // AS68 compatibility, throw away all lines starting with
919 // back-quotes, tildes, or '*'
920 // On other lines, turn the first '*' into a semi-colon.
921 if (*ln == '`' || *ln == '~' || *ln == '*')
925 for(p=ln; *p!=EOS; p++)
938 // o Handle end-of-macro;
939 // o tag the listing-line with an at (@) sign.
941 if ((ln = GetNextMacroLine()) == NULL)
943 ExitMacro(); // Exit macro (pop args, do fpop(), etc)
944 goto retry; // Try for more lines...
950 // o Handle end-of-repeat-block;
951 // o tag the listing-line with a pound (#) sign.
953 if ((ln = GetNextRepeatLine()) == NULL)
955 if (verb_flag) printf("TokenizeLine: Calling fpop() from SRC_IREPT...\n");
964 // Save text of the line. We only do this during listings and within
965 // macro-type blocks, since it is expensive to unconditionally copy every
970 // General house-keeping
971 tok = tokeol; // Set "tok" to EOL in case of error
972 tk = etok; // Reset token ptr
973 stuffnull = 0; // Don't stuff nulls
974 totlines++; // Bump total #lines assembled
976 // See if the entire line is a comment. This is a win if the programmer
977 // puts in lots of comments
978 if (*ln == '*' || *ln == ';' || ((*ln == '/') && (*(ln + 1) == '/')))
981 // Main tokenization loop;
982 // o skip whitespace;
983 // o handle end-of-line;
985 // o handle single-character tokens (operators, etc.);
986 // o handle multiple-character tokens (constants, strings, etc.).
989 // Skip whitespace, handle EOL
990 while ((int)chrtab[*ln] & WHITE)
993 // Handle EOL, comment with ';'
994 if (*ln == EOS || *ln == ';'|| ((*ln == '/') && (*(ln + 1) == '/')))
997 // Handle start of symbol. Symbols are null-terminated in place. The
998 // termination is always one symbol behind, since there may be no place
999 // for a null in the case that an operator immediately follows the name.
1004 if (stuffnull) // Terminate old symbol from previous pass
1007 v = 0; // Assume no DOT attrib follows symbol
1009 p = nullspot = ln++; // Nullspot -> start of this symbol
1011 // Find end of symbol (and compute its length)
1012 for(j=1; (int)chrtab[*ln]&CTSYM; j++)
1015 // Handle "DOT" special forms (like ".b") that follow a normal
1016 // symbol or keyword:
1019 *ln++ = EOS; // Terminate symbol
1020 stuffnull = 0; // And never try it again
1022 // Character following the `.' must have a DOT attribute, and
1023 // the chararacter after THAT one must not have a start-symbol
1024 // attribute (to prevent symbols that look like, for example,
1025 // "zingo.barf", which might be a good idea anyway....)
1026 if ((((int)chrtab[*ln] & DOT) == 0) || ((int)dotxtab[*ln] <= 0))
1027 return error("[bwsl] must follow `.' in symbol");
1029 v = (VALUE)dotxtab[*ln++];
1031 if ((int)chrtab[*ln] & CTSYM)
1032 return error("misuse of `.', not allowed in symbols");
1035 // If the symbol is small, check to see if it's really the name of
1039 for(state=0; state>=0;)
1041 j = (int)tolowertab[*p++];
1044 if (kwcheck[j] != state)
1050 if (*p == EOS || p == ln)
1064 // Make j = -1 if user tries to use a RISC register while in 68K mode
1065 if (!(rgpu || rdsp) && ((TOKEN)j >= KW_R0 && (TOKEN)j <= KW_R31))
1070 // Make j = -1 if time, date etc with no preceeding ^^
1071 // defined, referenced, streq, macdef, date and time
1074 case 112: // defined
1075 case 113: // referenced
1083 // If not tokenized keyword OR token was not found
1084 if (j < 0 || state < 0)
1088 //problem here: nullspot is a char * but TOKEN is a uint32_t. On a 64-bit
1089 //system, this will cause all kinds of mischief.
1091 *tk++ = (TOKEN)nullspot;
1093 string[stringNum] = nullspot;
1104 if (v) // Record attribute token (if any)
1107 if (stuffnull) // Arrange for string termination on next pass
1113 // Handle identity tokens
1120 // Handle multiple-character tokens
1125 case '!': // ! or !=
1135 case '\'': // 'string'
1136 case '\"': // "string"
1140 // More char * stuffing (8 bytes) into the space of 4 (TOKEN).
1141 // Need to figure out how to fix this crap.
1145 string[stringNum] = ln;
1150 for(p=ln; *ln!=EOS && *ln!=c1;)
1159 return(error("unterminated string"));
1188 warn("bad backslash code in string");
1198 return error("unterminated string");
1202 case '$': // $, hex constant
1203 if ((int)chrtab[*ln] & HDIGIT)
1207 // Parse the hex value
1208 while ((int)hextab[*ln] >= 0)
1209 v = (v << 4) + (int)hextab[*ln++];
1211 // ggn: Okay, some comments here are in order I think....
1212 // The original madmac sources didn't parse the size at
1213 // this point (i.e. .b/.w/.l). It was probably done at
1214 // another point, although it's unclear to me exactly
1215 // where. So why change this? My understanding (at least
1216 // from what SCPCD said on IRC) is that .w addressing
1217 // formats produce wrong code on jaguar (or doesn't execute
1218 // properly? something like that). So the code was changed
1219 // to mask off the upper bits depending on length (note: I
1220 // don't think .b is valid at all! I only know of .w/.l, so
1221 // this should probably be wiped). Then the code that
1222 // parses the constant and checks to see if it's between
1223 // $ffff0000 and $8000 never got triggered, so yay job
1224 // done! ...now say we want to assemble a st .prg. One of
1225 // the most widely spread optimisations is move.X expr.w,Y
1226 // (or vice versa, or both, anyway...) to access hardware
1227 // registers (which are mapped to $fxxxxx). This botchy
1228 // thing would create "hilarious" code while trying to
1229 // access hardware registers. So I made a condition to see
1230 // if st mode or jaguar is active and apply the both or
1231 // not. One last note: this is hardcoded to get optimised
1232 // for now on ST mode, i.e. it can't generate code like
1233 // move.w $00001234,d0 - it'll always get optimised to
1234 // move.w $1234.w,d0. It's probably ok, but maybe a warning
1235 // should be emitted? Or maybe finding a way to make it not
1236 // auto-optimise? I think it's ok for now...
1239 if (obj_format == ALCYON)
1241 if ((*(ln + 1) == 'b') || (*(ln + 1) == 'B') || (*(ln + 1) == 'w') || (*(ln + 1) == 'W') || (*(ln + 1) == 'l') || (*(ln + 1) == 'L'))
1248 if ((*(ln + 1) & 0xDF) == 'B')
1253 else if ((*(ln + 1) & 0xDF) == 'W')
1258 else if ((*(ln + 1) & 0xDF) == 'L')
1272 case '<': // < or << or <> or <=
1291 case ':': // : or ::
1301 case '=': // = or ==
1311 case '>': // > or >> or >=
1326 case '%': // % or binary constant
1327 if (*ln < '0' || *ln > '1')
1335 while (*ln >= '0' && *ln <= '1')
1336 v = (v << 1) + *ln++ - '0';
1340 if ((*(ln + 1) == 'b') || (*(ln + 1) == 'B'))
1346 if ((*(ln + 1) == 'w') || (*(ln + 1) == 'W'))
1352 if ((*(ln + 1) == 'l') || (*(ln + 1) == 'L'))
1361 case '@': // @ or octal constant
1362 if (*ln < '0' || *ln > '7')
1370 while (*ln >= '0' && *ln <= '7')
1371 v = (v << 3) + *ln++ - '0';
1375 if ((*(ln+1) == 'b') || (*(ln+1) == 'B'))
1381 if ((*(ln+1) == 'w') || (*(ln+1) == 'W'))
1387 if ((*(ln+1) == 'l') || (*(ln+1) == 'L'))
1396 case '^': // ^ or ^^ <operator-name>
1403 if (((int)chrtab[*++ln] & STSYM) == 0)
1405 error("invalid symbol following ^^");
1411 while ((int)chrtab[*ln] & CTSYM)
1414 for(state=0; state>=0;)
1416 // Get char, convert to lowercase
1419 if (j >= 'A' && j <= 'Z')
1424 if (kwcheck[j] != state)
1430 if (*p == EOS || p == ln)
1439 if (j < 0 || state < 0)
1441 error("unknown symbol following ^^");
1448 interror(2); // Bad MULTX entry in chrtab
1453 // Handle decimal constant
1458 while ((int)chrtab[*ln] & DIGIT)
1459 v = (v * 10) + *ln++ - '0';
1461 // See if there's a .[bwl] after the constant & deal with it if so
1464 if ((*(ln + 1) == 'b') || (*(ln + 1) == 'B'))
1469 else if ((*(ln + 1) == 'w') || (*(ln + 1) == 'W'))
1474 else if ((*(ln + 1) == 'l') || (*(ln + 1) == 'L'))
1482 //printf("CONST: %i\n", v);
1486 // Handle illegal character
1487 return error("illegal character");
1490 // Terminate line of tokens and return "success."
1493 tok = etok; // Set tok to beginning of line
1495 if (stuffnull) // Terminate last SYMBOL
1505 // .GOTO <label> goto directive
1507 // The label is searched for starting from the first line of the current,
1508 // enclosing macro definition. If no enclosing macro exists, an error is
1511 // A label is of the form:
1513 // :<name><whitespace>
1515 // The colon must appear in column 1. The label is stripped prior to macro
1516 // expansion, and is NOT subject to macro expansion. The whitespace may also
1519 //int d_goto(WORD siz) {
1521 int d_goto(WORD unused)
1525 // Setup for the search
1527 return error("missing label");
1529 // sym = (char *)tok[1];
1530 char * sym = string[tok[1]];
1533 if (cur_inobj->in_type != SRC_IMACRO)
1534 return error("goto not in macro");
1536 IMACRO * imacro = cur_inobj->inobj.imacro;
1537 // defln = (LONG *)imacro->im_macro->svalue;
1538 struct LineList * defln = imacro->im_macro->lineList;
1540 // Find the label, starting with the first line.
1541 // for(; defln!=NULL; defln=(LONG *)*defln)
1542 for(; defln!=NULL; defln=defln->next)
1544 // if (*(char *)(defln + 1) == ':')
1545 if (defln->line[0] == ':')
1547 // Compare names (sleazo string compare)
1548 // This string compare is not right. Doesn't check for lengths.
1549 // (actually it does, but in a crappy, unclear way.)
1550 #warning "!!! Bad string comparison !!!"
1552 // s2 = (char *)(defln + 1) + 1;
1566 // Found the label, set new macro next-line and return.
1567 if ((*s2 == EOS) || ((int)chrtab[*s2] & WHITE))
1569 imacro->im_nextln = defln;
1575 return error("goto label not found");
1579 void DumpTokenBuffer(void)
1582 printf("Tokens [%X]: ", sloc);
1584 for(t=tokbuf; *t!=EOL; t++)
1588 else if (*t == CONST)
1591 printf("[CONST: $%X]", (uint32_t)*t);
1593 else if (*t == ACONST)
1595 else if (*t == STRING)
1598 printf("[STRING:\"%s\"]", string[*t]);
1600 else if (*t == SYMBOL)
1603 printf("[SYMBOL:\"%s\"]", string[*t]);
1607 else if (*t == TKEOF)
1609 else if (*t == DEQUALS)
1610 printf("[DEQUALS]");
1615 else if (*t == DCOLON)
1627 else if (*t == UNMINUS)
1628 printf("[UNMINUS]");
1629 else if (*t == DOTB)
1631 else if (*t == DOTW)
1633 else if (*t == DOTL)
1635 else if (*t == DOTI)
1637 else if (*t == ENDEXPR)
1638 printf("[ENDEXPR]");
1639 else if (*t == CR_DEFINED)
1640 printf("[CR_DEFINED]");
1641 else if (*t == CR_REFERENCED)
1642 printf("[CR_REFERENCED]");
1643 else if (*t == CR_STREQ)
1644 printf("[CR_STREQ]");
1645 else if (*t == CR_MACDEF)
1646 printf("[CR_MACDEF]");
1647 else if (*t == CR_TIME)
1648 printf("[CR_TIME]");
1649 else if (*t == CR_DATE)
1650 printf("[CR_DATE]");
1651 else if (*t >= 0x20 && *t <= 0x2F)
1652 printf("[%c]", (char)*t);
1653 else if (*t >= 0x3A && *t <= 0x3F)
1654 printf("[%c]", (char)*t);
1655 else if (*t >= 0x80 && *t <= 0x87)
1656 printf("[D%u]", ((uint32_t)*t) - 0x80);
1657 else if (*t >= 0x88 && *t <= 0x8F)
1658 printf("[A%u]", ((uint32_t)*t) - 0x88);
1660 printf("[%X:%c]", (uint32_t)*t, (char)*t);