2 // RMAC - Renamed Macro Assembler for all Atari computers
3 // DIRECT.C - Directive Handling
4 // Copyright (C) 199x Landon Dyer, 2011-2021 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
157 (void *)d_dsm, // 68 .dsm
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 && !(obj_format == RAW))
225 return error(".org permitted only in GPU/DSP/OP, 56001, 6502 and 68k (with -fr switch) 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.
351 // If we get here we assume it's 68k with RAW output, so this is allowed
354 return error("In 68k mode only one .org statement is allowed");
357 org68k_address = address;
371 char prntstr[LNSIZ]; // String for PRINT directive
372 char format[LNSIZ]; // Format for PRINT directive
373 int formatting = 0; // Formatting on/off
374 int wordlong = 0; // WORD = 0, LONG = 1
375 int outtype = 0; // 0:hex, 1:decimal, 2:unsigned
377 uint64_t eval; // Expression value
378 WORD eattr; // Expression attributes
379 SYM * esym; // External symbol involved in expr.
380 TOKEN r_expr[EXPRSIZE];
387 sprintf(prntstr, "%s", string[tok[1]]);
388 printf("%s", prntstr);
391 unused = write(list_fd, prntstr, (LONG)strlen(prntstr));
398 // "X" & "L" get tokenized now... :-/ Probably should look into preventing this kind of thing from happening (was added with DSP56K code)
399 if ((tok[1] != SYMBOL) && (tok[1] != KW_L) && (tok[1] != KW_X))
407 else if (tok[1] == KW_X)
414 strcpy(prntstr, string[tok[2]]);
418 case 'l': case 'L': wordlong = 1; break;
419 case 'w': case 'W': wordlong = 0; break;
420 case 'x': case 'X': outtype = 0; break;
421 case 'd': case 'D': outtype = 1; break;
422 case 'u': case 'U': outtype = 2; break;
424 error("unknown print format flag");
436 if (expr(r_expr, &eval, &eattr, &esym) != OK)
442 case 0: strcpy(format, "%X"); break;
443 case 1: strcpy(format, "%d" ); break;
444 case 2: strcpy(format, "%u" ); break;
448 sprintf(prntstr, format, eval);
450 sprintf(prntstr, format, eval & 0xFFFF);
452 printf("%s", prntstr);
455 unused = write(list_fd, prntstr, (LONG)strlen(prntstr));
471 error("illegal print token [@ '%s']", prntstr);
477 // Undefine an equated condition code
483 // Check that we are in a RISC section
486 error(".ccundef must be defined in .gpu/.dsp section");
492 error("syntax error; expected symbol");
496 ccname = lookup(string[tok[1]], LABEL, 0);
498 // Make sure symbol is a valid ccdef
499 if (!ccname || !(ccname->sattre & EQUATEDCC))
501 error("invalid equated condition name specified");
505 ccname->sattre |= UNDEF_CC;
512 // Undefine an equated register
514 int d_equrundef(void)
518 // Check that we are in a RISC section
520 return error(".equrundef/.regundef must be defined in .gpu/.dsp section");
524 // Skip preceeding or seperating commas (if any)
528 // Check we are dealing with a symbol
530 return error("syntax error; expected symbol");
532 // Lookup and undef if equated register
533 regname = lookup(string[tok[1]], LABEL, 0);
535 if (regname && (regname->sattre & EQUATEDREG))
537 // Reset the attributes of this symbol...
539 regname->sattre &= ~(EQUATEDREG | BANK_0 | BANK_1);
540 regname->sattre |= UNDEF_EQUR;
543 // Skip over symbol token and address
552 // Do not allow use of the CLR.L opcode
556 warn("CLR.L opcode ignored...");
562 // Include binary file (can add addition size & position params, comma separated)
568 uint64_t pos, size, bytesRead;
572 // Check to see if we're in BSS, and, if so, throw an error
575 error("cannot include binary file \"%s\" in BSS section", string[tok[1]]);
581 error("syntax error; file to include missing");
585 // Attempt to open the include file in the current directory, then (if that
586 // failed) try list of include files passed in the enviroment string or by
588 TOKEN filename = tok[1];
590 if ((fd = open(string[filename], _OPEN_INC)) < 0)
592 for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
596 // Append path char if necessary
597 if (fd > 0 && buf1[fd - 1] != SLASHCHAR)
598 strcat(buf1, SLASHSTRING);
600 strcat(buf1, string[filename]);
602 if ((fd = open(buf1, _OPEN_INC)) >= 0)
606 return error("cannot open: \"%s\"", string[filename]);
615 // Check size parameter (can be omitted)
620 if (abs_expr(&size) != OK)
625 if ((int64_t)size <= 0)
627 return error("invalid incbin size requested");
631 size = lseek(fd, 0L, SEEK_END);
634 // Check offset parameter (can be omitted)
641 if (abs_expr(&pos) != OK)
647 lseek(fd, pos, SEEK_SET);
649 if ((int64_t)size < 0)
651 return error("requested incbin size out of range");
656 // offset parameter omitted, so it's 0
657 pos = lseek(fd, 0L, SEEK_SET);
661 return error(comma_error);
664 pos = lseek(fd, 0L, SEEK_SET);
668 // size & pos not given, so assume offset of 0 and all of the binary
669 size = lseek(fd, 0L, SEEK_END);
670 pos = lseek(fd, 0L, SEEK_SET);
675 DEBUG { printf("INCBIN: File '%s' is %li bytes.\n", string[filename], size); }
677 char * fileBuffer = (char *)malloc(size);
678 bytesRead = read(fd, fileBuffer, size);
680 if (bytesRead != size)
682 error("was only able to read %li bytes from binary file (%s, %li bytes)", bytesRead, string[filename], size);
686 memcpy(chptr, fileBuffer, size);
701 // Set RISC register banks
705 // Set active register bank zero
713 // Set active register bank one
720 // Helper function, to cut down on mistakes & typing
722 static inline void SkipBytes(unsigned bytesToSkip)
727 if ((scattr & SBSS) == 0)
729 chcheck(bytesToSkip);
730 D_ZEROFILL(bytesToSkip);
737 orgaddr += bytesToSkip;
743 // Adjust location to an EVEN value
748 return error(in_6502mode);
750 unsigned skip = (rgpu || rdsp ? orgaddr : sloc) & 0x01;
754 if ((scattr & SBSS) == 0)
773 // Adjust location to a LONG value
777 unsigned lower2Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x03;
778 unsigned bytesToSkip = (0x04 - lower2Bits) & 0x03;
779 SkipBytes(bytesToSkip);
780 SetLargestAlignment(4);
787 // Adjust location to a PHRASE value
789 // N.B.: We have to handle the GPU/DSP cases separately because you can embed
790 // RISC code in the middle of a regular 68K section. Also note that all
791 // of the alignment pseudo-ops will have to be fixed this way.
793 // This *must* behave differently when in a RISC section, as following sloc
794 // (instead of orgaddr) will fuck things up royally. Note that we do it this
795 // way because you can embed RISC code in a 68K section, and have the origin
796 // pointing to a different alignment in the RISC section than the 68K section.
800 unsigned lower3Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x07;
801 unsigned bytesToSkip = (0x08 - lower3Bits) & 0x07;
802 SkipBytes(bytesToSkip);
803 SetLargestAlignment(8);
810 // Adjust location to a DPHRASE value
814 unsigned lower4Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x0F;
815 unsigned bytesToSkip = (0x10 - lower4Bits) & 0x0F;
816 SkipBytes(bytesToSkip);
817 SetLargestAlignment(16);
824 // Adjust location to a QPHRASE value
828 unsigned lower5Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x1F;
829 unsigned bytesToSkip = (0x20 - lower5Bits) & 0x1F;
830 SkipBytes(bytesToSkip);
831 SetLargestAlignment(32);
838 // Do auto-even. This must be called ONLY if 'sloc' is odd.
840 // This is made hairy because, if there was a label on the line, we also have
841 // to adjust its value. This won't work with more than one label on the line,
842 // which is OK since multiple labels are only allowed in AS68 kludge mode, and
843 // the C compiler is VERY paranoid and uses ".even" whenever it can
845 // N.B.: This probably needs the same fixes as above...
849 if (cursect != M6502)
852 sloc++; // Bump BSS section
854 D_byte(0); // Deposit 0.b in non-BSS
856 if (lab_sym != NULL) // Bump label if we have to
863 // Unimplemened directive error
867 return error("unimplemented directive");
872 // Return absolute (not TDB) and defined expression or return an error
874 int abs_expr(uint64_t * a_eval)
878 if (expr(exprbuf, a_eval, &eattr, NULL) < 0)
881 if (!(eattr & DEFINED))
882 return error(undef_error);
885 return error(rel_error);
892 // Hand symbols in a symbol-list to a function (kind of like mapcar...)
894 int symlist(int(* func)())
896 const char * em = "symbol list syntax";
903 if ((*func)(string[tok[1]]) != OK)
922 // .include "filename"
932 if (*tok == STRING) // Leave strings ALONE
934 else if (*tok == SYMBOL) // Try to append ".s" to symbols
936 strcpy(buf, string[*++tok]);
940 else // Punt if no STRING or SYMBOL
941 return error("missing filename");
943 // Make sure the user didn't try anything like:
944 // .include equates.s
946 return error("extra stuff after filename--enclose it in quotes");
948 // Attempt to open the include file in the current directory, then (if that
949 // failed) try list of include files passed in the enviroment string or by
951 if ((j = open(fn, 0)) < 0)
953 for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
957 // Append path char if necessary
958 if (j > 0 && buf1[j - 1] != SLASHCHAR)
959 strcat(buf1, SLASHSTRING);
963 if ((j = open(buf1, 0)) >= 0)
967 return error("cannot open: \"%s\"", fn);
977 // .assert expression [, expression...]
984 for(; expr(exprbuf, &eval, &eattr, NULL)==OK; ++tok)
986 if (!(eattr & DEFINED))
987 return error("forward or undefined .assert");
990 return error("assert failure");
1002 // .globl symbol [, symbol] <<<cannot make local symbols global>>>
1004 int globl1(char * p)
1009 return error("cannot .globl local symbol");
1011 if ((sy = lookup(p, LABEL, 0)) == NULL)
1013 sy = NewSymbol(p, LABEL, 0);
1016 //printf("glob1: Making global symbol: attr=%04X, eattr=%08X, %s\n", sy->sattr, sy->sattre, sy->sname);
1019 sy->sattr |= GLOBAL;
1028 return error(in_6502mode);
1036 // .prgflags expression
1038 int d_prgflags(void)
1043 return error("PRGFLAGS requires value");
1044 else if (abs_expr(&eval) == OK)
1046 PRGFLAGS = (uint32_t)eval;
1051 return error("PRGFLAGS requires value");
1057 // .abs [expression]
1064 return error(in_6502mode);
1070 else if (abs_expr(&eval) != OK)
1074 sloc = (uint32_t)eval;
1085 return error("directive forbidden in gpu/dsp mode");
1087 return error(in_6502mode);
1089 if (cursect != TEXT)
1092 SwitchSection(TEXT);
1102 return error("directive forbidden in gpu/dsp mode");
1104 return error(in_6502mode);
1106 if (cursect != DATA)
1109 SwitchSection(DATA);
1119 return error("directive forbidden in gpu/dsp mode");
1121 return error(in_6502mode);
1134 // .ds[.size] expression
1138 DEBUG { printf("Directive: .ds.[size] = %u, sloc = $%X\n", siz, sloc); }
1142 if ((cursect & (M6502 | M56KPXYL)) == 0)
1144 if ((siz != SIZB) && (sloc & 1)) // Automatic .even
1148 if (abs_expr(&eval) != OK)
1151 // Check to see if the value being passed in is negative (who the hell does
1152 // that?--nobody does; it's the code gremlins, or rum, what does it)
1153 // N.B.: Since 'eval' is of type uint64_t, if it goes negative, it will
1154 // have its high bit set.
1155 if (eval & 0x8000000000000000)
1156 return error("negative sizes not allowed in DS");
1158 // In non-TDB section (BSS, ABS and M6502) just advance the location
1159 // counter appropriately. In TDB sections, deposit (possibly large) chunks
1160 // of zeroed memory....
1161 if ((scattr & SBSS) || cursect == M6502)
1163 listvalue((uint32_t)eval);
1165 sloc += (uint32_t)eval;
1167 if (cursect == M6502)
1170 just_bss = 1; // No data deposited (8-bit CPU mode)
1172 else if (cursect & M56KPXYL)
1174 // Change segment instead of marking blanks.
1175 // Only mark segments we actually wrote something
1176 if (chptr != dsp_currentorg->start && dsp_written_data_in_current_org)
1178 dsp_currentorg->end = chptr;
1180 dsp_currentorg->memtype = dsp_currentorg[-1].memtype;
1183 listvalue((uint32_t)eval);
1184 sloc += (uint32_t)eval;
1186 // And now let's create a new segment
1187 dsp_currentorg->start = chptr;
1188 dsp_currentorg->chunk = scode; // Mark down which chunk this org starts from (will be needed when outputting)
1189 sect[cursect].orgaddr = sloc;
1190 dsp_currentorg->orgadr = sloc;
1191 dsp_written_data_in_current_org = 0;
1193 just_bss = 1; // No data deposited
1197 dep_block(eval, siz, 0, (DEFINED | ABS), NULL);
1206 // dsm[.siz] expression
1207 // Define modulo storage
1208 // Quoting the Motorola assembler manual:
1209 // "The DSM directive reserves a block of memory the length of which in words is equal to
1210 // the value of <expression>.If the runtime location counter is not zero, this directive first
1211 // advances the runtime location counter to a base address that is a multiple of 2k, where
1212 // 2k >= <expression>."
1213 // The kicker of course is written a few sentences after:
1214 // "<label>, if present, will be assigned the value of the runtime location counter after a valid
1215 // base address has been established."
1219 TOKEN * tok_current = tok; // Keep track of where tok was when we entered this procedure
1222 if (abs_expr(&eval) != OK)
1225 // Round up to the next highest power of 2
1226 // Nicked from https://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2
1235 units_to_skip = eval + 1 - sloc;
1236 sloc += units_to_skip; // Bump up sloc - TODO: check if this goes over the RAM limits?
1238 // If a label has been defined in the same line as dsm, its value also needs to be adjusted
1241 SYM * label = lookup(label_defined, LABEL, 0);
1242 label->svalue += units_to_skip;
1245 tok = tok_current; // Rewind tok back to where it was
1246 return d_ds(siz); // And let d_ds take over from here
1251 // dc.b, dc.w / dc, dc.l, dc.i, dc.q, dc.d, dc.s, dc.x
1259 if ((scattr & SBSS) != 0)
1260 return error("illegal initialization of section");
1262 // Do an auto_even if it's not BYTE sized (hmm, should we be doing this???)
1263 if ((cursect != M6502) && (cursect != M56001P) && (cursect != M56001X)
1264 && (cursect != M56001Y) && (cursect != M56001L)
1265 && (siz != SIZB) && (sloc & 1))
1268 // Check to see if we're trying to set LONGS on a non 32-bit aligned
1269 // address in a GPU or DSP section, in their local RAM
1270 if ((siz == SIZL) && (orgaddr & 0x03)
1271 && ((rgpu && (orgaddr >= 0xF03000) && (orgaddr <= 0xF03FFFF))
1272 || (rdsp && (orgaddr >= 0xF1B000) && (orgaddr <= 0xF1CFFFF))))
1273 warn("depositing LONGs on a non-long address in local RAM");
1277 // dc.b 'string' [,] ...
1278 if (siz == SIZB && (*tok == STRING || *tok == STRINGA8) && (tok[2] == ',' || tok[2] == EOL))
1280 uint32_t i = strlen(string[tok[1]]);
1282 if ((challoc - ch_size) < i)
1287 for(p=string[tok[1]]; *p!=EOS; p++)
1290 else if (*tok == STRINGA8)
1292 for(p=string[tok[1]]; *p!=EOS; p++)
1293 D_byte(strtoa8[*p]);
1297 error("String format not supported... yet");
1304 int movei = 0; // MOVEI flag for dc.i
1313 // dc.x <expression>
1316 if (expr(exprbuf, &eval, &eattr, &esym) != OK)
1319 uint16_t tdb = eattr & TDB;
1320 uint16_t defined = eattr & DEFINED;
1322 // 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 !!!
1325 if (cursect != M56001L)
1329 AddFixup(FU_DSPIMM24 | FU_SEXT, sloc, exprbuf);
1336 double fval = *(double *)&eval;
1337 eval = DoubleToDSPFloat(fval);
1341 if ((uint32_t)eval + 0x1000000 >= 0x2000000)
1342 return error(range_error);
1345 // Deposit DSP word (24-bit)
1351 // In L: we deposit stuff to both X: and Y: instead
1352 // We will be a bit lazy and require that there is a 2nd value
1353 // in the same source line. (Motorola's assembler can parse
1354 // 12-digit hex values, which we can't do at the moment) This
1355 // of course requires to parse 2 values in one pass. If there
1356 // isn't another value in this line, assume X: value is 0.
1363 AddFixup(FU_DSPIMM24 | FU_SEXT, sloc, exprbuf);
1370 float fval = *(float *)&eval;
1371 eval = DoubleToDSPFloat(fval);
1375 if (eval + 0x1000000 >= 0x2000000)
1376 return error(range_error);
1379 // Parse 2nd value if we didn't do this yet
1380 if (secondword == 0)
1382 evaly = (uint32_t)eval;
1387 // If we don't have a : then we're probably at EOL,
1388 // which means the X: value will be 0
1394 tok++; // Eat the comma;
1396 if (expr(exprbuf, &eval, &eattr, NULL) != OK)
1399 defined = (WORD)(eattr & DEFINED);
1404 // Deposit DSP words (24-bit)
1407 sloc--; // We do write 2 DSP words but as far as L: space is concerned we actually advance our counter by one
1420 AddFixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
1426 return error("non-absolute byte value");
1428 if (eval + 0x100 >= 0x200)
1429 return error("%s (value = $%X)", range_error, eval);
1440 AddFixup(FU_WORD | FU_SEXT, sloc, exprbuf);
1445 if (eval + 0x10000 >= 0x20000)
1446 return error(range_error);
1449 MarkRelocatable(cursect, sloc, tdb, MWORD, NULL);
1451 // Deposit 68000 or 6502 (byte-reversed) word
1452 if (cursect != M6502)
1461 // Shamus: Why can't we do longs in 6502 mode?
1463 return error(in_6502mode);
1467 AddFixup(FU_LONG | (movei ? FU_MOVEI : 0), sloc, exprbuf);
1473 MarkRelocatable(cursect, sloc, tdb, MLONG, NULL);
1476 eval = WORDSWAP32(eval);
1486 return error(in_6502mode);
1488 // DEFINITELY NEED FIXUPS HERE!
1491 AddFixup(FU_QUAD, sloc, exprbuf);
1499 // 32-bit float size
1501 return error(in_6502mode);
1503 /* Seems to me that if something is undefined here, then that should be an error. Likewise for the D & X variants. */
1506 // AddFixup(FU_FLOATSING, sloc, exprbuf);
1508 return error("labels not allowed in floating point expressions");
1512 //Would this *ever* happen?
1514 // MarkRelocatable(cursect, sloc, tdb, MSINGLE, NULL);
1518 uint32_t ieee754 = FloatToIEEE754((float)*ptr.dp);
1525 // 64-bit double size
1527 return error(in_6502mode);
1531 // AddFixup(FU_FLOATDOUB, sloc, exprbuf);
1533 return error("labels not allowed in floating point expressions");
1537 //Would this *ever* happen?
1539 // MarkRelocatable(cursect, sloc, tdb, MDOUBLE, NULL);
1543 uint64_t ieee754 = DoubleToIEEE754(*ptr.dp);
1551 return error(in_6502mode);
1554 memset(extDbl, 0, 12);
1558 // AddFixup(FU_FLOATEXT, sloc, exprbuf);
1559 // D_extend(extDbl);
1560 return error("labels not allowed in floating point expressions");
1564 //Would this *ever* happen?
1566 // MarkRelocatable(cursect, sloc, tdb, MEXTEND, NULL);
1570 DoubleToExtended(*ptr.dp, extDbl);
1588 // dcb[.siz] expr1,expr2 - Make 'expr1' copies of 'expr2'
1592 uint64_t evalc, eval;
1595 DEBUG { printf("dcb: section is %s%s%s (scattr=$%X)\n", (cursect & TEXT ? "TEXT" : ""), (cursect & DATA ? " DATA" : ""), (cursect & BSS ? "BSS" : ""), scattr); }
1597 if ((scattr & SBSS) != 0)
1598 return error("illegal initialization of section");
1600 if (abs_expr(&evalc) != OK)
1604 return error("missing comma");
1606 if (expr(exprbuf, &eval, &eattr, NULL) < 0)
1609 if (cursect != M6502 && (siz != SIZB) && (sloc & 1))
1612 dep_block((uint32_t)evalc, siz, (uint32_t)eval, eattr, exprbuf);
1618 // Generalized initialization directive
1620 // .init[.siz] [#count,] expression [.size] , ...
1622 // The size suffix on the ".init" directive becomes the default size of the
1623 // objects to deposit. If an item is preceeded with a sharp (immediate) sign
1624 // and an expression, it specifies a repeat count. The value to be deposited
1625 // may be followed by a size suffix, which overrides the default size.
1627 int d_init(WORD def_siz)
1634 if ((scattr & SBSS) != 0)
1635 return error(".init not permitted in BSS or ABS");
1638 return error("directive forbidden in gpu/dsp mode");
1642 // Get repeat count (defaults to 1)
1647 if (abs_expr(&count) != OK)
1651 return error(comma_error);
1656 // Evaluate expression to deposit
1657 if (expr(exprbuf, &eval, &eattr, NULL) < 0)
1661 { // Determine size of object to deposit
1662 case DOTB: siz = SIZB; break;
1663 case DOTW: siz = SIZB; break;
1664 case DOTL: siz = SIZL; break;
1671 dep_block((uint32_t)count, siz, (uint32_t)eval, eattr, exprbuf);
1681 return error(comma_error);
1688 // Deposit 'count' values of size 'siz' in the current (non-BSS) segment
1690 int dep_block(uint32_t count, WORD siz, uint32_t eval, WORD eattr, TOKEN * exprbuf)
1692 WORD tdb = eattr & TDB;
1693 WORD defined = eattr & DEFINED;
1697 if ((challoc - ch_size) < 4)
1705 AddFixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
1711 return error("non-absolute byte value");
1713 if (eval + 0x100 >= 0x200)
1714 return error(range_error);
1724 AddFixup(FU_WORD | FU_SEXT, sloc, exprbuf);
1730 MarkRelocatable(cursect, sloc, tdb, MWORD, NULL);
1732 if (eval + 0x10000 >= 0x20000)
1733 return error(range_error);
1735 // Deposit 68000 or 6502 (byte-reversed) word
1736 if (cursect != M6502)
1746 return error(in_6502mode);
1750 AddFixup(FU_LONG, sloc, exprbuf);
1756 MarkRelocatable(cursect, sloc, tdb, MLONG, NULL);
1770 // .comm symbol, size
1779 return error(in_6502mode);
1782 return error("missing symbol");
1787 if (*p == '.') // Cannot .comm a local symbol
1788 return error(locgl_error);
1790 if ((sym = lookup(p, LABEL, 0)) == NULL)
1791 sym = NewSymbol(p, LABEL, 0);
1794 if (sym->sattr & DEFINED)
1795 return error(".comm symbol already defined");
1798 sym->sattr = GLOBAL | COMMON | BSS;
1801 return error(comma_error);
1803 if (abs_expr(&eval) != OK) // Parse size of common region
1806 sym->svalue = eval; // Install common symbol's size
1813 // .list - Turn listing on
1825 // .nlist - Turn listing off
1837 // .68000 - Back to 68000 TEXT segment
1841 rgpu = rdsp = robjproc = dsp56001 = 0;
1842 // Switching from gpu/dsp sections should reset any ORG'd Address
1846 SwitchSection(TEXT);
1847 activecpu = CPU_68000;
1853 // .68020 - Back to 68000 TEXT segment and select 68020
1858 activecpu = CPU_68020;
1864 // .68030 - Back to 68000 TEXT segment and select 68030
1869 activecpu = CPU_68030;
1875 // .68040 - Back to 68000 TEXT segment and select 68040
1880 activecpu = CPU_68040;
1881 activefpu = FPU_68040;
1887 // .68060 - Back to 68000 TEXT segment and select 68060
1892 activecpu = CPU_68060;
1893 activefpu = FPU_68060;
1899 // .68881 - Back to 680x0 TEXT segment and select 68881 FPU
1904 activefpu = FPU_68881;
1910 // .68882 - Back to 680x0 TEXT segment and select 68882 FPU
1915 activefpu = FPU_68882;
1921 // nofpu - Deselect FPUs.
1925 activefpu = FPU_NONE;
1931 // .56001 - Switch to DSP56001 assembler
1936 rgpu = rdsp = robjproc = 0;
1939 if ((obj_format == LOD) || (obj_format == P56))
1940 SwitchSection(M56001P);
1947 // .gpu - Switch to GPU assembler
1951 if ((cursect != TEXT) && (cursect != DATA))
1953 error(".gpu can only be used in the TEXT or DATA segments");
1957 // If previous section was DSP or 68000 then we need to reset ORG'd Addresses
1964 rgpu = 1; // Set GPU assembly
1965 rdsp = 0; // Unset DSP assembly
1966 robjproc = 0; // Unset OP assembly
1967 dsp56001 = 0; // Unset 56001 assembly
1968 regbank = BANK_N; // Set no default register bank
1974 // .dsp - Switch to DSP assembler
1978 if ((cursect != TEXT) && (cursect != DATA))
1980 error(".dsp can only be used in the TEXT or DATA segments");
1984 // If previous section was gpu or 68000 then we need to reset ORG'd Addresses
1991 rdsp = 1; // Set DSP assembly
1992 rgpu = 0; // Unset GPU assembly
1993 robjproc = 0; // Unset OP assembly
1994 dsp56001 = 0; // Unset 56001 assembly
1995 regbank = BANK_N; // Set no default register bank
2001 // .cargs [#offset], symbol[.size], ...
2003 // Lists of registers may also be mentioned; they just take up space. Good for
2004 // "documentation" purposes:
2006 // .cargs a6, .arg1, .arg2, .arg3...
2008 // Symbols thus created are ABS and EQUATED.
2012 uint64_t eval = 4; // Default to 4 if no offset specified (to account for
2021 return error("directive forbidden in gpu/dsp mode");
2027 if (abs_expr(&eval) != OK)
2030 // Eat the comma, if it's there
2041 // Set env to either local (dot prefixed) or global scope
2042 env = (*p == '.' ? curenv : 0);
2043 symbol = lookup(p, LABEL, env);
2047 symbol = NewSymbol(p, LABEL, env);
2050 else if (symbol->sattr & DEFINED)
2051 return error("multiply-defined label '%s'", p);
2053 // Put symbol in "order of definition" list
2054 AddToSymbolDeclarationList(symbol);
2056 symbol->sattr |= (ABS | DEFINED | EQUATED);
2057 symbol->svalue = eval;
2060 // What this does is eat any dot suffixes attached to a symbol. If
2061 // it's a .L, it adds 4 to eval; if it's .W or .B, it adds 2. If
2062 // there is no dot suffix, it assumes a size of 2.
2074 else if (*tok >= KW_D0 && *tok <= KW_A7)
2076 if (reglist(&rlist) < 0)
2079 for(i=0; i<16; i++, rlist>>=1)
2102 return error(".cargs syntax");
2106 // Eat commas in between each argument, if they exist
2114 // .cstruct [#offset], symbol[.size], ...
2116 // Lists of registers may also be mentioned; they just take up space. Good for
2117 // "documentation" purposes:
2119 // .cstruct a6, .arg1, .arg2, .arg3...
2121 // Symbols thus created are ABS and EQUATED. Note that this is for
2122 // compatibility with VBCC and the Remover's library. Thanks to GroovyBee for
2127 uint64_t eval = 0; // Default, if no offset specified, is zero
2135 return error("directive forbidden in gpu/dsp mode");
2141 if (abs_expr(&eval) != OK)
2144 // Eat the comma, if it's there
2153 symbolName = string[tok[1]];
2155 // Set env to either local (dot prefixed) or global scope
2156 env = (symbolName[0] == '.' ? curenv : 0);
2157 symbol = lookup(symbolName, LABEL, env);
2159 // If the symbol wasn't found, then define it. Otherwise, throw an
2163 symbol = NewSymbol(symbolName, LABEL, env);
2166 else if (symbol->sattr & DEFINED)
2167 return error("multiply-defined label '%s'", symbolName);
2169 // Put symbol in "order of definition" list
2170 AddToSymbolDeclarationList(symbol);
2174 // Adjust label start address if it's a word or a long, as a byte
2175 // label might have left us on an odd address.
2180 eval += eval & 0x01;
2183 symbol->sattr |= (ABS | DEFINED | EQUATED);
2184 symbol->svalue = eval;
2186 // Check for dot suffixes and adjust space accordingly (longs and
2187 // words on an odd boundary get bumped to the next word aligned
2188 // address). If no suffix, then throw an error.
2201 return error("Symbol missing dot suffix in .cstruct construct");
2206 else if (*tok >= KW_D0 && *tok <= KW_A7)
2208 if (reglist(&rlist) < 0)
2211 for(i=0; i<16; i++, rlist>>=1)
2234 return error(".cstruct syntax");
2238 // Eat commas in between each argument, if they exist
2246 // Define start of OP object list (allows the use of ORG)
2250 if ((cursect != TEXT) && (cursect != DATA))
2252 error(".objproc can only be used in the TEXT or DATA segments");
2256 // If previous section was DSP or 68000 then we need to reset ORG'd
2264 robjproc = 1; // Set OP assembly
2265 rgpu = 0; // Unset GPU assembly
2266 rdsp = 0; // Unset DSP assembly
2267 dsp56001 = 0; // Unset 56001 assembly
2273 // Undefine a macro - .undefmac macname [, macname...]
2275 int undmac1(char * p)
2277 SYM * symbol = lookup(p, MACRO, 0);
2279 // If the macro symbol exists, cause it to disappear
2281 symbol->stype = (BYTE)SY_UNDEF;
2296 warn("JPAD directive is deprecated/non-functional");
2303 warn("NOJPAD directive is deprecated/non-functional");
2310 return error("What the hell? Do you think we adhere to the Goof standard?");
2315 // .opt - turn a specific (or all) optimisation on or off
2324 char * tmpstr = string[*tok++];
2326 if (ParseOptimization(tmpstr) != OK)
2327 return error("unknown optimization flag '%s'", tmpstr);
2330 return error(".opt directive needs every switch enclosed inside quotation marks");
2338 // .if, Start conditional assembly
2345 IFENT * rif = f_ifent;
2349 rif = (IFENT *)malloc(sizeof(IFENT));
2351 f_ifent = rif->if_prev;
2353 rif->if_prev = ifent;
2358 if (expr(exprbuf, &eval, &eattr, &esym) != OK)
2361 if ((eattr & DEFINED) == 0)
2362 return error(undef_error);
2367 rif->if_state = (WORD)disabled;
2373 // .else, Do alternate case for .if
2377 IFENT * rif = ifent;
2379 if (rif->if_prev == NULL)
2380 return error("mismatched .else");
2383 disabled = rif->if_prev->if_state;
2387 rif->if_state = (WORD)disabled;
2393 // .endif, End of conditional assembly block
2394 // This is also called by fpop() to pop levels of IFENTs in case a macro or
2395 // include file exits early with `exitm' or `end'.
2399 IFENT * rif = ifent;
2401 if (rif->if_prev == NULL)
2402 return error("mismatched .endif");
2404 ifent = rif->if_prev;
2405 disabled = rif->if_prev->if_state;
2406 rif->if_prev = f_ifent;