2 // RMAC - Reboot's Macro Assembler for all Atari computers
3 // DIRECT.C - Directive Handling
4 // Copyright (C) 199x Landon Dyer, 2011-2020 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
30 TOKEN exprbuf[128]; // Expression buffer
31 SYM * symbolPtr[1000000]; // Symbol pointers table
32 static long unused; // For supressing 'write' warnings
33 char buffer[256]; // Scratch buffer for messages
34 int largestAlign[3] = { 2, 2, 2 }; // Largest alignment value seen per section
36 // Function prototypes
73 int d_equrundef(void);
85 void SetLargestAlignment(int);
87 // Directive handler table
98 (void *)d_init, // 9 init
100 (void *)d_goto, // 11 goto
101 (void *)d_dc, // 12 dc
102 (void *)d_ds, // 13 ds
103 d_undmac, // 14 undefmac
106 (void *)d_dcb, // 17 dcb
110 d_incbin, // 21 .incbin //load
111 d_unimpl, // 22 disable
112 d_unimpl, // 23 enable
114 d_regbank0, // 25 .regbank0
115 d_regbank1, // 26 .regbank1
117 d_assert, // 28 assert
119 d_unimpl, // 30* endif
120 d_unimpl, // 31* endc
122 d_include, // 33 include
124 d_unimpl, // 35* macro
125 ExitMacro, // 36* exitm
126 d_unimpl, // 37* endm
130 d_phrase, // 41* endr
131 d_dphrase, // 42 struct
132 d_qphrase, // 43 ends
134 d_subttl, // 45 subttl
138 d_noclear, // 49 .noclear
139 d_equrundef, // 50 .equrundef/.regundef
140 d_ccundef, // 51 .ccundef
141 d_print, // 52 .print
142 d_cstruct, // 53 .cstruct
143 d_jpad, // 54 .jpad (deprecated)
144 d_nojpad, // 55 .nojpad (deprecated)
145 d_gpumain, // 56 .gpumain (deprecated)
146 d_prgflags, // 57 .prgflags
147 d_68020, // 58 .68020
148 d_68030, // 59 .68030
149 d_68040, // 60 .68040
150 d_68060, // 61 .68060
151 d_68881, // 62 .68881
152 d_68882, // 63 .68882
153 d_56001, // 64 .56001
156 d_objproc, // 67 .objproc
162 // Set the largest alignment seen in the current section
164 void SetLargestAlignment(int size)
166 if ((scattr & TEXT) && (largestAlign[0] < size))
167 largestAlign[0] = size;
168 else if ((scattr & DATA) && (largestAlign[1] < size))
169 largestAlign[1] = size;
170 else if ((scattr & BSS) && (largestAlign[2] < size))
171 largestAlign[2] = size;
176 // .error - Abort compilation, printing an error message
178 int d_error(char *str)
181 return error("error directive encountered - aborting assembling");
187 return error(string[tok[1]]);
190 return error("error directive encountered--aborting assembly");
197 // .warn - Just display a warning on screen
199 int d_warn(char *str)
202 return warn("WARNING WARNING WARNING");
208 return warn(string[tok[1]]);
211 return warn("WARNING WARNING WARNING");
224 if (!rgpu && !rdsp && !robjproc && !m6502 && !dsp56001)
225 return error(".org permitted only in GPU/DSP/OP, 56001 and 6502 sections");
227 // M56K can leave the expression off the org for some reason :-/
228 // (It's because the expression is non-standard, and so we have to look at
230 if (!dsp56001 && (abs_expr(&address) == ERROR))
232 error("cannot determine org'd address");
236 if (rgpu | rdsp | robjproc)
243 // 6502. We also kludge 'lsloc' so the listing generator doesn't try
244 // to spew out megabytes.
245 if (address > 0xFFFF)
246 return error(range_error);
248 if (sloc != currentorg[0])
250 currentorg[1] = sloc;
254 currentorg[0] = address;
256 lsloc = sloc = address;
257 chptr = scode->chptr + address;
263 // Only mark segments we actually wrote something
264 if (chptr != dsp_currentorg->start && dsp_written_data_in_current_org)
266 dsp_currentorg->end = chptr;
270 // Maybe we switched from a non-DSP section (TEXT, DATA, etc) and
271 // scode isn't initialised yet. Not that it's going to be a valid
272 // scenario, but if we try it anyhow it's going to lead to a crash. So
273 // let's fudge a value of 0 and get on with it.
274 orgaddr = (scode != NULL ? sloc : 0);
278 return error(syntax_error);
280 int sectionToSwitch = 0;
285 dsp_currentorg->memtype = ORG_X;
286 sectionToSwitch = M56001X;
290 dsp_currentorg->memtype = ORG_Y;
291 sectionToSwitch = M56001Y;
295 dsp_currentorg->memtype = ORG_P;
296 sectionToSwitch = M56001P;
300 dsp_currentorg->memtype = ORG_L;
301 sectionToSwitch = M56001L;
305 return error("unknown type in ORG");
308 if ((obj_format == LOD) || (obj_format == P56))
309 SwitchSection(sectionToSwitch);
312 chcheck(3); // Ensure we got a valid address to write
313 dsp_currentorg->chunk = scode; // Mark down which chunk this org starts from (will be needed when outputting)
317 // Well, the user didn't specify an address at all so we'll have to
318 // use the last used address of that section (or 0 if there wasn't one)
320 dsp_currentorg->start = chptr;
321 dsp_currentorg->orgadr = orgaddr;
325 if (abs_expr(&address) == ERROR)
327 error("cannot determine org'd address");
331 dsp_currentorg->start = chptr;
332 dsp_currentorg->orgadr = (uint32_t)address;
333 sect[cursect].orgaddr = (uint32_t)address;
336 if (address > DSP_MAX_RAM)
338 return error(range_error);
341 dsp_written_data_in_current_org = 0;
343 // Copied from 6502 above: kludge `lsloc' so the listing generator
344 // doesn't try to spew out megabytes.
345 lsloc = sloc = (int32_t)address;
346 // N.B.: It seems that by enabling this, even though it works elsewhere, will cause symbols to royally fuck up. Will have to do some digging to figure out why.
360 char prntstr[LNSIZ]; // String for PRINT directive
361 char format[LNSIZ]; // Format for PRINT directive
362 int formatting = 0; // Formatting on/off
363 int wordlong = 0; // WORD = 0, LONG = 1
364 int outtype = 0; // 0:hex, 1:decimal, 2:unsigned
366 uint64_t eval; // Expression value
367 WORD eattr; // Expression attributes
368 SYM * esym; // External symbol involved in expr.
369 TOKEN r_expr[EXPRSIZE];
376 sprintf(prntstr, "%s", string[tok[1]]);
377 printf("%s", prntstr);
380 unused = write(list_fd, prntstr, (LONG)strlen(prntstr));
387 // "X" & "L" get tokenized now... :-/ Probably should look into preventing this kind of thing from happening (was added with DSP56K code)
388 if ((tok[1] != SYMBOL) && (tok[1] != KW_L) && (tok[1] != KW_X))
396 else if (tok[1] == KW_X)
403 strcpy(prntstr, string[tok[2]]);
407 case 'l': case 'L': wordlong = 1; break;
408 case 'w': case 'W': wordlong = 0; break;
409 case 'x': case 'X': outtype = 0; break;
410 case 'd': case 'D': outtype = 1; break;
411 case 'u': case 'U': outtype = 2; break;
413 error("unknown print format flag");
425 if (expr(r_expr, &eval, &eattr, &esym) != OK)
431 case 0: strcpy(format, "%X"); break;
432 case 1: strcpy(format, "%d" ); break;
433 case 2: strcpy(format, "%u" ); break;
437 sprintf(prntstr, format, eval);
439 sprintf(prntstr, format, eval & 0xFFFF);
441 printf("%s", prntstr);
444 unused = write(list_fd, prntstr, (LONG)strlen(prntstr));
460 error("illegal print token [@ '%s']", prntstr);
466 // Undefine an equated condition code
472 // Check that we are in a RISC section
475 error(".ccundef must be defined in .gpu/.dsp section");
481 error("syntax error; expected symbol");
485 ccname = lookup(string[tok[1]], LABEL, 0);
487 // Make sure symbol is a valid ccdef
488 if (!ccname || !(ccname->sattre & EQUATEDCC))
490 error("invalid equated condition name specified");
494 ccname->sattre |= UNDEF_CC;
501 // Undefine an equated register
503 int d_equrundef(void)
507 // Check that we are in a RISC section
509 return error(".equrundef/.regundef must be defined in .gpu/.dsp section");
513 // Skip preceeding or seperating commas (if any)
517 // Check we are dealing with a symbol
519 return error("syntax error; expected symbol");
521 // Lookup and undef if equated register
522 regname = lookup(string[tok[1]], LABEL, 0);
524 if (regname && (regname->sattre & EQUATEDREG))
526 // Reset the attributes of this symbol...
528 regname->sattre &= ~(EQUATEDREG | BANK_0 | BANK_1);
529 regname->sattre |= UNDEF_EQUR;
532 // Skip over symbol token and address
541 // Do not allow use of the CLR.L opcode
545 warn("CLR.L opcode ignored...");
551 // Include binary file
557 long pos, size, bytesRead;
561 // Check to see if we're in BSS, and, if so, throw an error
564 error("cannot include binary file \"%s\" in BSS section", string[tok[1]]);
570 error("syntax error; file to include missing");
574 // Attempt to open the include file in the current directory, then (if that
575 // failed) try list of include files passed in the enviroment string or by
577 if ((fd = open(string[tok[1]], _OPEN_INC)) < 0)
579 for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
583 // Append path char if necessary
584 if (fd > 0 && buf1[fd - 1] != SLASHCHAR)
585 strcat(buf1, SLASHSTRING);
587 strcat(buf1, string[tok[1]]);
589 if ((fd = open(buf1, _OPEN_INC)) >= 0)
593 return error("cannot open: \"%s\"", string[tok[1]]);
598 size = lseek(fd, 0L, SEEK_END);
599 pos = lseek(fd, 0L, SEEK_SET);
602 DEBUG { printf("INCBIN: File '%s' is %li bytes.\n", string[tok[1]], size); }
604 char * fileBuffer = (char *)malloc(size);
605 bytesRead = read(fd, fileBuffer, size);
607 if (bytesRead != size)
609 error("was only able to read %li bytes from binary file (%s, %li bytes)", bytesRead, string[tok[1]], size);
613 memcpy(chptr, fileBuffer, size);
628 // Set RISC register banks
632 // Set active register bank zero
640 // Set active register bank one
647 // Helper function, to cut down on mistakes & typing
649 static inline void SkipBytes(unsigned bytesToSkip)
654 if ((scattr & SBSS) == 0)
656 chcheck(bytesToSkip);
657 D_ZEROFILL(bytesToSkip);
664 orgaddr += bytesToSkip;
670 // Adjust location to an EVEN value
675 return error(in_6502mode);
677 unsigned skip = (rgpu || rdsp ? orgaddr : sloc) & 0x01;
681 if ((scattr & SBSS) == 0)
700 // Adjust location to a LONG value
704 unsigned lower2Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x03;
705 unsigned bytesToSkip = (0x04 - lower2Bits) & 0x03;
706 SkipBytes(bytesToSkip);
707 SetLargestAlignment(4);
714 // Adjust location to a PHRASE value
716 // N.B.: We have to handle the GPU/DSP cases separately because you can embed
717 // RISC code in the middle of a regular 68K section. Also note that all
718 // of the alignment pseudo-ops will have to be fixed this way.
720 // This *must* behave differently when in a RISC section, as following sloc
721 // (instead of orgaddr) will fuck things up royally. Note that we do it this
722 // way because you can embed RISC code in a 68K section, and have the origin
723 // pointing to a different alignment in the RISC section than the 68K section.
727 unsigned lower3Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x07;
728 unsigned bytesToSkip = (0x08 - lower3Bits) & 0x07;
729 SkipBytes(bytesToSkip);
730 SetLargestAlignment(8);
737 // Adjust location to a DPHRASE value
741 unsigned lower4Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x0F;
742 unsigned bytesToSkip = (0x10 - lower4Bits) & 0x0F;
743 SkipBytes(bytesToSkip);
744 SetLargestAlignment(16);
751 // Adjust location to a QPHRASE value
755 unsigned lower5Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x1F;
756 unsigned bytesToSkip = (0x20 - lower5Bits) & 0x1F;
757 SkipBytes(bytesToSkip);
758 SetLargestAlignment(32);
765 // Do auto-even. This must be called ONLY if 'sloc' is odd.
767 // This is made hairy because, if there was a label on the line, we also have
768 // to adjust its value. This won't work with more than one label on the line,
769 // which is OK since multiple labels are only allowed in AS68 kludge mode, and
770 // the C compiler is VERY paranoid and uses ".even" whenever it can
772 // N.B.: This probably needs the same fixes as above...
776 if (cursect != M6502)
779 sloc++; // Bump BSS section
781 D_byte(0); // Deposit 0.b in non-BSS
783 if (lab_sym != NULL) // Bump label if we have to
790 // Unimplemened directive error
794 return error("unimplemented directive");
799 // Return absolute (not TDB) and defined expression or return an error
801 int abs_expr(uint64_t * a_eval)
805 if (expr(exprbuf, a_eval, &eattr, NULL) < 0)
808 if (!(eattr & DEFINED))
809 return error(undef_error);
812 return error(rel_error);
819 // Hand symbols in a symbol-list to a function (kind of like mapcar...)
821 int symlist(int(* func)())
823 const char * em = "symbol list syntax";
830 if ((*func)(string[tok[1]]) != OK)
849 // .include "filename"
859 if (*tok == STRING) // Leave strings ALONE
861 else if (*tok == SYMBOL) // Try to append ".s" to symbols
863 strcpy(buf, string[*++tok]);
867 else // Punt if no STRING or SYMBOL
868 return error("missing filename");
870 // Make sure the user didn't try anything like:
871 // .include equates.s
873 return error("extra stuff after filename--enclose it in quotes");
875 // Attempt to open the include file in the current directory, then (if that
876 // failed) try list of include files passed in the enviroment string or by
878 if ((j = open(fn, 0)) < 0)
880 for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
884 // Append path char if necessary
885 if (j > 0 && buf1[j - 1] != SLASHCHAR)
886 strcat(buf1, SLASHSTRING);
890 if ((j = open(buf1, 0)) >= 0)
894 return error("cannot open: \"%s\"", fn);
904 // .assert expression [, expression...]
911 for(; expr(exprbuf, &eval, &eattr, NULL)==OK; ++tok)
913 if (!(eattr & DEFINED))
914 return error("forward or undefined .assert");
917 return error("assert failure");
929 // .globl symbol [, symbol] <<<cannot make local symbols global>>>
936 return error("cannot .globl local symbol");
938 if ((sy = lookup(p, LABEL, 0)) == NULL)
940 sy = NewSymbol(p, LABEL, 0);
943 //printf("glob1: Making global symbol: attr=%04X, eattr=%08X, %s\n", sy->sattr, sy->sattre, sy->sname);
955 return error(in_6502mode);
963 // .prgflags expression
970 return error("PRGFLAGS requires value");
971 else if (abs_expr(&eval) == OK)
973 PRGFLAGS = (uint32_t)eval;
978 return error("PRGFLAGS requires value");
991 return error(in_6502mode);
997 else if (abs_expr(&eval) != OK)
1001 sloc = (uint32_t)eval;
1012 return error("directive forbidden in gpu/dsp mode");
1014 return error(in_6502mode);
1016 if (cursect != TEXT)
1019 SwitchSection(TEXT);
1029 return error("directive forbidden in gpu/dsp mode");
1031 return error(in_6502mode);
1033 if (cursect != DATA)
1036 SwitchSection(DATA);
1046 return error("directive forbidden in gpu/dsp mode");
1048 return error(in_6502mode);
1061 // .ds[.size] expression
1065 DEBUG { printf("Directive: .ds.[size] = %u, sloc = $%X\n", siz, sloc); }
1069 if ((cursect & (M6502 | M56KPXYL)) == 0)
1071 if ((siz != SIZB) && (sloc & 1)) // Automatic .even
1075 if (abs_expr(&eval) != OK)
1078 // Check to see if the value being passed in is negative (who the hell does
1079 // that?--nobody does; it's the code gremlins, or rum, what does it)
1080 // N.B.: Since 'eval' is of type uint64_t, if it goes negative, it will
1081 // have its high bit set.
1082 if (eval & 0x8000000000000000)
1083 return error("negative sizes not allowed in DS");
1085 // In non-TDB section (BSS, ABS and M6502) just advance the location
1086 // counter appropriately. In TDB sections, deposit (possibly large) chunks
1087 // of zeroed memory....
1088 if ((scattr & SBSS) || cursect == M6502)
1090 listvalue((uint32_t)eval);
1092 sloc += (uint32_t)eval;
1094 if (cursect == M6502)
1097 just_bss = 1; // No data deposited (8-bit CPU mode)
1099 else if (cursect & M56KPXYL)
1101 // Change segment instead of marking blanks.
1102 // Only mark segments we actually wrote something
1103 if (chptr != dsp_currentorg->start && dsp_written_data_in_current_org)
1105 dsp_currentorg->end = chptr;
1107 dsp_currentorg->memtype = dsp_currentorg[-1].memtype;
1110 listvalue((uint32_t)eval);
1111 sloc += (uint32_t)eval;
1113 // And now let's create a new segment
1114 dsp_currentorg->start = chptr;
1115 dsp_currentorg->chunk = scode; // Mark down which chunk this org starts from (will be needed when outputting)
1116 sect[cursect].orgaddr = sloc;
1117 dsp_currentorg->orgadr = sloc;
1118 dsp_written_data_in_current_org = 0;
1120 just_bss = 1; // No data deposited
1124 dep_block(eval, siz, 0, (DEFINED | ABS), NULL);
1133 // dsm[.siz] expression
1134 // Define modulo storage
1135 // Quoting the Motorola assembler manual:
1136 // "The DSM directive reserves a block of memory the length of which in words is equal to
1137 // the value of <expression>.If the runtime location counter is not zero, this directive first
1138 // advances the runtime location counter to a base address that is a multiple of 2k, where
1139 // 2k >= <expression>."
1140 // The kicker of course is written a few sentences after:
1141 // "<label>, if present, will be assigned the value of the runtime location counter after a valid
1142 // base address has been established."
1146 TOKEN * tok_current = tok; // Keep track of where tok was when we entered this procedure
1149 if (abs_expr(&eval) != OK)
1152 // Round up to the next highest power of 2
1153 // Nicked from https://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2
1162 units_to_skip = eval + 1 - sloc;
1163 sloc += units_to_skip; // Bump up sloc - TODO: check if this goes over the RAM limits?
1165 // If a label has been defined in the same line as dsm, its value also needs to be adjusted
1168 SYM * label = lookup(label_defined, LABEL, 0);
1169 label->svalue += units_to_skip;
1172 tok = tok_current; // Rewind tok back to where it was
1173 return d_ds(siz); // And let d_ds take over from here
1178 // dc.b, dc.w / dc, dc.l, dc.i, dc.q, dc.d, dc.s, dc.x
1186 if ((scattr & SBSS) != 0)
1187 return error("illegal initialization of section");
1189 // Do an auto_even if it's not BYTE sized (hmm, should we be doing this???)
1190 if ((cursect != M6502) && (cursect != M56001P) && (cursect != M56001X)
1191 && (cursect != M56001Y) && (cursect != M56001L)
1192 && (siz != SIZB) && (sloc & 1))
1195 // Check to see if we're trying to set LONGS on a non 32-bit aligned
1196 // address in a GPU or DSP section, in their local RAM
1197 if ((siz == SIZL) && (orgaddr & 0x03)
1198 && ((rgpu && (orgaddr >= 0xF03000) && (orgaddr <= 0xF03FFFF))
1199 || (rdsp && (orgaddr >= 0xF1B000) && (orgaddr <= 0xF1CFFFF))))
1200 warn("depositing LONGs on a non-long address in local RAM");
1204 // dc.b 'string' [,] ...
1205 if (siz == SIZB && (*tok == STRING || *tok == STRINGA8) && (tok[2] == ',' || tok[2] == EOL))
1207 uint32_t i = strlen(string[tok[1]]);
1209 if ((challoc - ch_size) < i)
1214 for(p=string[tok[1]]; *p!=EOS; p++)
1217 else if (*tok == STRINGA8)
1219 for(p=string[tok[1]]; *p!=EOS; p++)
1220 D_byte(strtoa8[*p]);
1224 error("String format not supported... yet");
1231 int movei = 0; // MOVEI flag for dc.i
1240 // dc.x <expression>
1243 if (expr(exprbuf, &eval, &eattr, &esym) != OK)
1246 uint16_t tdb = eattr & TDB;
1247 uint16_t defined = eattr & DEFINED;
1249 // N.B.: This is awful. This needs better handling, rather than just bodging something in that, while works, is basically an ugly wart on the assembler. !!! FIX !!!
1252 if (cursect != M56001L)
1256 AddFixup(FU_DSPIMM24 | FU_SEXT, sloc, exprbuf);
1263 double fval = *(double *)&eval;
1264 eval = DoubleToDSPFloat(fval);
1268 if ((uint32_t)eval + 0x1000000 >= 0x2000000)
1269 return error(range_error);
1272 // Deposit DSP word (24-bit)
1278 // In L: we deposit stuff to both X: and Y: instead
1279 // We will be a bit lazy and require that there is a 2nd value
1280 // in the same source line. (Motorola's assembler can parse
1281 // 12-digit hex values, which we can't do at the moment) This
1282 // of course requires to parse 2 values in one pass. If there
1283 // isn't another value in this line, assume X: value is 0.
1290 AddFixup(FU_DSPIMM24 | FU_SEXT, sloc, exprbuf);
1297 float fval = *(float *)&eval;
1298 eval = DoubleToDSPFloat(fval);
1302 if (eval + 0x1000000 >= 0x2000000)
1303 return error(range_error);
1306 // Parse 2nd value if we didn't do this yet
1307 if (secondword == 0)
1309 evaly = (uint32_t)eval;
1314 // If we don't have a : then we're probably at EOL,
1315 // which means the X: value will be 0
1321 tok++; // Eat the comma;
1323 if (expr(exprbuf, &eval, &eattr, NULL) != OK)
1326 defined = (WORD)(eattr & DEFINED);
1331 // Deposit DSP words (24-bit)
1334 sloc--; // We do write 2 DSP words but as far as L: space is concerned we actually advance our counter by one
1347 AddFixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
1353 return error("non-absolute byte value");
1355 if (eval + 0x100 >= 0x200)
1356 return error("%s (value = $%X)", range_error, eval);
1367 AddFixup(FU_WORD | FU_SEXT, sloc, exprbuf);
1372 if (eval + 0x10000 >= 0x20000)
1373 return error(range_error);
1376 MarkRelocatable(cursect, sloc, tdb, MWORD, NULL);
1378 // Deposit 68000 or 6502 (byte-reversed) word
1379 if (cursect != M6502)
1388 // Shamus: Why can't we do longs in 6502 mode?
1390 return error(in_6502mode);
1394 AddFixup(FU_LONG | (movei ? FU_MOVEI : 0), sloc, exprbuf);
1400 MarkRelocatable(cursect, sloc, tdb, MLONG, NULL);
1403 eval = WORDSWAP32(eval);
1413 return error(in_6502mode);
1415 // DEFINITELY NEED FIXUPS HERE!
1418 AddFixup(FU_QUAD, sloc, exprbuf);
1426 // 32-bit float size
1428 return error(in_6502mode);
1430 /* Seems to me that if something is undefined here, then that should be an error. Likewise for the D & X variants. */
1433 // AddFixup(FU_FLOATSING, sloc, exprbuf);
1435 return error("labels not allowed in floating point expressions");
1439 //Would this *ever* happen?
1441 // MarkRelocatable(cursect, sloc, tdb, MSINGLE, NULL);
1445 uint32_t ieee754 = FloatToIEEE754((float)*ptr.dp);
1452 // 64-bit double size
1454 return error(in_6502mode);
1458 // AddFixup(FU_FLOATDOUB, sloc, exprbuf);
1460 return error("labels not allowed in floating point expressions");
1464 //Would this *ever* happen?
1466 // MarkRelocatable(cursect, sloc, tdb, MDOUBLE, NULL);
1470 uint64_t ieee754 = DoubleToIEEE754(*ptr.dp);
1478 return error(in_6502mode);
1481 memset(extDbl, 0, 12);
1485 // AddFixup(FU_FLOATEXT, sloc, exprbuf);
1486 // D_extend(extDbl);
1487 return error("labels not allowed in floating point expressions");
1491 //Would this *ever* happen?
1493 // MarkRelocatable(cursect, sloc, tdb, MEXTEND, NULL);
1497 DoubleToExtended(*ptr.dp, extDbl);
1515 // dcb[.siz] expr1,expr2 - Make 'expr1' copies of 'expr2'
1519 uint64_t evalc, eval;
1522 DEBUG { printf("dcb: section is %s%s%s (scattr=$%X)\n", (cursect & TEXT ? "TEXT" : ""), (cursect & DATA ? " DATA" : ""), (cursect & BSS ? "BSS" : ""), scattr); }
1524 if ((scattr & SBSS) != 0)
1525 return error("illegal initialization of section");
1527 if (abs_expr(&evalc) != OK)
1531 return error("missing comma");
1533 if (expr(exprbuf, &eval, &eattr, NULL) < 0)
1536 if (cursect != M6502 && (siz != SIZB) && (sloc & 1))
1539 dep_block((uint32_t)evalc, siz, (uint32_t)eval, eattr, exprbuf);
1545 // Generalized initialization directive
1547 // .init[.siz] [#count,] expression [.size] , ...
1549 // The size suffix on the ".init" directive becomes the default size of the
1550 // objects to deposit. If an item is preceeded with a sharp (immediate) sign
1551 // and an expression, it specifies a repeat count. The value to be deposited
1552 // may be followed by a size suffix, which overrides the default size.
1554 int d_init(WORD def_siz)
1561 if ((scattr & SBSS) != 0)
1562 return error(".init not permitted in BSS or ABS");
1565 return error("directive forbidden in gpu/dsp mode");
1569 // Get repeat count (defaults to 1)
1574 if (abs_expr(&count) != OK)
1578 return error(comma_error);
1583 // Evaluate expression to deposit
1584 if (expr(exprbuf, &eval, &eattr, NULL) < 0)
1588 { // Determine size of object to deposit
1589 case DOTB: siz = SIZB; break;
1590 case DOTW: siz = SIZB; break;
1591 case DOTL: siz = SIZL; break;
1598 dep_block((uint32_t)count, siz, (uint32_t)eval, eattr, exprbuf);
1608 return error(comma_error);
1615 // Deposit 'count' values of size 'siz' in the current (non-BSS) segment
1617 int dep_block(uint32_t count, WORD siz, uint32_t eval, WORD eattr, TOKEN * exprbuf)
1619 WORD tdb = eattr & TDB;
1620 WORD defined = eattr & DEFINED;
1624 if ((challoc - ch_size) < 4)
1632 AddFixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
1638 return error("non-absolute byte value");
1640 if (eval + 0x100 >= 0x200)
1641 return error(range_error);
1651 AddFixup(FU_WORD | FU_SEXT, sloc, exprbuf);
1657 MarkRelocatable(cursect, sloc, tdb, MWORD, NULL);
1659 if (eval + 0x10000 >= 0x20000)
1660 return error(range_error);
1662 // Deposit 68000 or 6502 (byte-reversed) word
1663 if (cursect != M6502)
1673 return error(in_6502mode);
1677 AddFixup(FU_LONG, sloc, exprbuf);
1683 MarkRelocatable(cursect, sloc, tdb, MLONG, NULL);
1697 // .comm symbol, size
1706 return error(in_6502mode);
1709 return error("missing symbol");
1714 if (*p == '.') // Cannot .comm a local symbol
1715 return error(locgl_error);
1717 if ((sym = lookup(p, LABEL, 0)) == NULL)
1718 sym = NewSymbol(p, LABEL, 0);
1721 if (sym->sattr & DEFINED)
1722 return error(".comm symbol already defined");
1725 sym->sattr = GLOBAL | COMMON | BSS;
1728 return error(comma_error);
1730 if (abs_expr(&eval) != OK) // Parse size of common region
1733 sym->svalue = eval; // Install common symbol's size
1740 // .list - Turn listing on
1752 // .nlist - Turn listing off
1764 // .68000 - Back to 68000 TEXT segment
1768 rgpu = rdsp = robjproc = dsp56001 = 0;
1769 // Switching from gpu/dsp sections should reset any ORG'd Address
1773 SwitchSection(TEXT);
1774 activecpu = CPU_68000;
1780 // .68020 - Back to 68000 TEXT segment and select 68020
1785 activecpu = CPU_68020;
1791 // .68030 - Back to 68000 TEXT segment and select 68030
1796 activecpu = CPU_68030;
1802 // .68040 - Back to 68000 TEXT segment and select 68040
1807 activecpu = CPU_68040;
1808 activefpu = FPU_68040;
1814 // .68060 - Back to 68000 TEXT segment and select 68060
1819 activecpu = CPU_68060;
1820 activefpu = FPU_68060;
1826 // .68881 - Back to 680x0 TEXT segment and select 68881 FPU
1831 activefpu = FPU_68881;
1837 // .68882 - Back to 680x0 TEXT segment and select 68882 FPU
1842 activefpu = FPU_68882;
1848 // nofpu - Deselect FPUs.
1852 activefpu = FPU_NONE;
1858 // .56001 - Switch to DSP56001 assembler
1863 rgpu = rdsp = robjproc = 0;
1866 if ((obj_format == LOD) || (obj_format == P56))
1867 SwitchSection(M56001P);
1874 // .gpu - Switch to GPU assembler
1878 if ((cursect != TEXT) && (cursect != DATA))
1880 error(".gpu can only be used in the TEXT or DATA segments");
1884 // If previous section was DSP or 68000 then we need to reset ORG'd Addresses
1891 rgpu = 1; // Set GPU assembly
1892 rdsp = 0; // Unset DSP assembly
1893 robjproc = 0; // Unset OP assembly
1894 dsp56001 = 0; // Unset 56001 assembly
1895 regbank = BANK_N; // Set no default register bank
1901 // .dsp - Switch to DSP assembler
1905 if ((cursect != TEXT) && (cursect != DATA))
1907 error(".dsp can only be used in the TEXT or DATA segments");
1911 // If previous section was gpu or 68000 then we need to reset ORG'd Addresses
1918 rdsp = 1; // Set DSP assembly
1919 rgpu = 0; // Unset GPU assembly
1920 robjproc = 0; // Unset OP assembly
1921 dsp56001 = 0; // Unset 56001 assembly
1922 regbank = BANK_N; // Set no default register bank
1928 // .cargs [#offset], symbol[.size], ...
1930 // Lists of registers may also be mentioned; they just take up space. Good for
1931 // "documentation" purposes:
1933 // .cargs a6, .arg1, .arg2, .arg3...
1935 // Symbols thus created are ABS and EQUATED.
1939 uint64_t eval = 4; // Default to 4 if no offset specified (to account for
1948 return error("directive forbidden in gpu/dsp mode");
1954 if (abs_expr(&eval) != OK)
1957 // Eat the comma, if it's there
1968 // Set env to either local (dot prefixed) or global scope
1969 env = (*p == '.' ? curenv : 0);
1970 symbol = lookup(p, LABEL, env);
1974 symbol = NewSymbol(p, LABEL, env);
1977 else if (symbol->sattr & DEFINED)
1978 return error("multiply-defined label '%s'", p);
1980 // Put symbol in "order of definition" list
1981 AddToSymbolDeclarationList(symbol);
1983 symbol->sattr |= (ABS | DEFINED | EQUATED);
1984 symbol->svalue = eval;
1987 // What this does is eat any dot suffixes attached to a symbol. If
1988 // it's a .L, it adds 4 to eval; if it's .W or .B, it adds 2. If
1989 // there is no dot suffix, it assumes a size of 2.
2001 else if (*tok >= KW_D0 && *tok <= KW_A7)
2003 if (reglist(&rlist) < 0)
2006 for(i=0; i<16; i++, rlist>>=1)
2029 return error(".cargs syntax");
2033 // Eat commas in between each argument, if they exist
2041 // .cstruct [#offset], symbol[.size], ...
2043 // Lists of registers may also be mentioned; they just take up space. Good for
2044 // "documentation" purposes:
2046 // .cstruct a6, .arg1, .arg2, .arg3...
2048 // Symbols thus created are ABS and EQUATED. Note that this is for
2049 // compatibility with VBCC and the Remover's library. Thanks to GroovyBee for
2054 uint64_t eval = 0; // Default, if no offset specified, is zero
2062 return error("directive forbidden in gpu/dsp mode");
2068 if (abs_expr(&eval) != OK)
2071 // Eat the comma, if it's there
2080 symbolName = string[tok[1]];
2082 // Set env to either local (dot prefixed) or global scope
2083 env = (symbolName[0] == '.' ? curenv : 0);
2084 symbol = lookup(symbolName, LABEL, env);
2086 // If the symbol wasn't found, then define it. Otherwise, throw an
2090 symbol = NewSymbol(symbolName, LABEL, env);
2093 else if (symbol->sattr & DEFINED)
2094 return error("multiply-defined label '%s'", symbolName);
2096 // Put symbol in "order of definition" list
2097 AddToSymbolDeclarationList(symbol);
2101 // Adjust label start address if it's a word or a long, as a byte
2102 // label might have left us on an odd address.
2107 eval += eval & 0x01;
2110 symbol->sattr |= (ABS | DEFINED | EQUATED);
2111 symbol->svalue = eval;
2113 // Check for dot suffixes and adjust space accordingly (longs and
2114 // words on an odd boundary get bumped to the next word aligned
2115 // address). If no suffix, then throw an error.
2128 return error("Symbol missing dot suffix in .cstruct construct");
2133 else if (*tok >= KW_D0 && *tok <= KW_A7)
2135 if (reglist(&rlist) < 0)
2138 for(i=0; i<16; i++, rlist>>=1)
2161 return error(".cstruct syntax");
2165 // Eat commas in between each argument, if they exist
2173 // Define start of OP object list (allows the use of ORG)
2177 if ((cursect != TEXT) && (cursect != DATA))
2179 error(".objproc can only be used in the TEXT or DATA segments");
2183 // If previous section was DSP or 68000 then we need to reset ORG'd
2191 robjproc = 1; // Set OP assembly
2192 rgpu = 0; // Unset GPU assembly
2193 rdsp = 0; // Unset DSP assembly
2194 dsp56001 = 0; // Unset 56001 assembly
2200 // Undefine a macro - .undefmac macname [, macname...]
2202 int undmac1(char * p)
2204 SYM * symbol = lookup(p, MACRO, 0);
2206 // If the macro symbol exists, cause it to disappear
2208 symbol->stype = (BYTE)SY_UNDEF;
2223 warn("JPAD directive is deprecated/non-functional");
2230 warn("NOJPAD directive is deprecated/non-functional");
2237 return error("What the hell? Do you think we adhere to the Goof standard?");
2242 // .opt - turn a specific (or all) optimisation on or off
2251 char * tmpstr = string[*tok++];
2253 if (ParseOptimization(tmpstr) != OK)
2254 return error("unknown optimization flag '%s'", tmpstr);
2257 return error(".opt directive needs every switch enclosed inside quotation marks");
2265 // .if, Start conditional assembly
2272 IFENT * rif = f_ifent;
2276 rif = (IFENT *)malloc(sizeof(IFENT));
2278 f_ifent = rif->if_prev;
2280 rif->if_prev = ifent;
2285 if (expr(exprbuf, &eval, &eattr, &esym) != OK)
2288 if ((eattr & DEFINED) == 0)
2289 return error(undef_error);
2294 rif->if_state = (WORD)disabled;
2300 // .else, Do alternate case for .if
2304 IFENT * rif = ifent;
2306 if (rif->if_prev == NULL)
2307 return error("mismatched .else");
2310 disabled = rif->if_prev->if_state;
2314 rif->if_state = (WORD)disabled;
2320 // .endif, End of conditional assembly block
2321 // This is also called by fpop() to pop levels of IFENTs in case a macro or
2322 // include file exits early with `exitm' or `end'.
2326 IFENT * rif = ifent;
2328 if (rif->if_prev == NULL)
2329 return error("mismatched .endif");
2331 ifent = rif->if_prev;
2332 disabled = rif->if_prev->if_state;
2333 rif->if_prev = f_ifent;