2 // RMAC - Reboot's Macro Assembler for all Atari computers
3 // RMAC.C - Main Application Code
4 // Copyright (C) 199x Landon Dyer, 2011-2019 Reboot and Friends
5 // RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
6 // Source utilised with the kind permission of Landon Dyer
27 int perm_verb_flag; // Permanently verbose, interactive mode
28 int list_flag; // "-l" listing flag on command line
29 int list_pag = 1; // Enable listing pagination by default
30 int verb_flag; // Be verbose about what's going on
31 int m6502; // 1, assembling 6502 code
32 int as68_flag; // as68 kludge mode
33 int glob_flag; // Assume undefined symbols are global
34 int lsym_flag; // Include local symbols in object file
35 int sbra_flag; // Warn about possible short branches
36 int prg_flag; // !=0, produce .PRG executable (2=symbols)
37 int prg_extend; // !=0, output extended .PRG symbols
38 int legacy_flag; // Do stuff like insert code in RISC assembler
39 int obj_format; // Object format flag
40 int debug; // [1..9] Enable debugging levels
41 int err_flag; // '-e' specified
42 int err_fd; // File to write error messages to
43 int rgpu, rdsp; // Assembling Jaguar GPU or DSP code
44 int robjproc; // Assembling Jaguar Object Processor code
45 int dsp56001; // Assembling DSP 56001 code
46 int list_fd; // File to write listing to
47 int regbank; // RISC register bank
48 int segpadsize; // Segment padding size
49 int endian; // Host processor endianess (0 = LE, 1 = BE)
50 char * objfname; // Object filename pointer
51 char * firstfname; // First source filename
52 char * cmdlnexec; // Executable name, pointer to ARGV[0]
53 char * searchpath; // Search path for include files
54 char defname[] = "noname.o"; // Default output filename
55 int optim_flags[OPT_COUNT]; // Specific optimisations on/off matrix
56 int activecpu = CPU_68000; // Active 68k CPU (68000 by default)
57 int activefpu = FPU_NONE; // Active FPU (none by default)
61 // Convert a string to uppercase
63 void strtoupper(char * s)
71 // Manipulate file extension.
73 // 'name' must be large enough to hold any possible filename. If 'stripp' is
74 // nonzero, any old extension is removed. If the file does not already have an
75 // extension, 'extension' is appended to the filename.
77 char * fext(char * name, char * extension, int stripp)
81 // Find beginning of "real" name (strip off path)
82 char * beg = strrchr(name, SLASHCHAR);
87 // Clobber any old extension, if requested
90 for(s=beg; *s && *s!='.'; ++s)
96 if (strrchr(beg, '.') == NULL)
97 strcat(beg, extension);
104 // Return 'item'nth element of semicolon-seperated pathnames specified in the
105 // enviroment string 's'. Copy the pathname to 'buf'. Return 0 if the 'item'
106 // nth path doesn't exist.
108 // ['item' ranges from 0 to N-1, where N = #elements in search path]
110 int nthpath(char * env_var, int itemno, char * buf)
112 char * s = searchpath;
121 while (*s != EOS && *s++ != ';')
127 while (*s != EOS && *s != ';')
137 // Display command line help
139 void DisplayHelp(void)
142 " %s [options] srcfile\n"
145 " -? or -h Display usage information\n"
146 " -dsymbol[=value] Define symbol (with optional value, default=0)\n"
147 " -e[errorfile] Send error messages to file, not stdout\n"
148 " -f[format] Output object file format\n"
149 " a: ALCYON (use this for ST)\n"
150 " b: BSD (use this for Jaguar)\n"
152 " p: P56 (use this for DSP56001 only)\n"
153 " l: LOD (use this for DSP56001 only)\n"
154 " x: com/exe/xex (Atari 800)\n"
155 " -i[path] Directory to search for include files\n"
156 " -l[filename] Create an output listing file\n"
157 " -l*[filename] Create an output listing file without pagination\n"
158 " -m[cpu] Select default CPU. Available options:\n"
168 " -n Don't do things behind your back in RISC assembler\n"
169 " -o file Output file name\n"
170 " +o[value] Turn a specific optimisation on\n"
171 " Available optimisation values and default settings:\n"
172 " o0: Absolute long adddresses to word (on)\n"
173 " o1: move.l #x,dn/an to moveq (on)\n"
174 " o2: Word branches to short (on)\n"
175 " o3: Outer displacement 0(an) to (an) (off)\n"
176 " o4: lea size(An),An to addq #size,An (off)\n"
177 " o5: Absolute long base displacement to word (off)\n"
178 " o6: Null branches to NOP (off)\n"
179 " o7: clr.l Dx to moveq #0,Dx (off)\n"
180 " o8: adda.w/l #x,Dy to addq.w/l #x,Dy (off)\n"
181 " o9: adda.w/l #x,Dy to lea x(Dy),Dy (off)\n"
182 " ~o[value] Turn a specific optimisation off\n"
183 " +oall Turn all optimisations on\n"
184 " ~oall Turn all optimisations off\n"
185 " -p Create an ST .prg (without symbols)\n"
186 " -ps Create an ST .prg (with symbols)\n"
187 " -px Create an ST .prg (with exsymbols)\n"
189 " -r[size] Pad segments to boundary size specified\n"
190 " w: word (2 bytes, default alignment)\n"
191 " l: long (4 bytes)\n"
192 " p: phrase (8 bytes)\n"
193 " d: double phrase (16 bytes)\n"
194 " q: quad phrase (32 bytes)\n"
195 " -s Warn about possible short branches\n"
196 " and applied optimisations\n"
197 " -u Force referenced and undefined symbols global\n"
198 " -v Set verbose mode\n"
199 " -x Turn on debugging mode\n"
200 " -y[pagelen] Set page line length (default: 61)\n"
206 // Display version information
208 void DisplayVersion(void)
211 " _ __ _ __ ___ __ _ ___ \n"
212 "| '__| '_ ` _ \\ / _` |/ __|\n"
213 "| | | | | | | | (_| | (__ \n"
214 "|_| |_| |_| |_|\\__,_|\\___|\n"
215 "\nReboot's Macro Assembler\n"
216 "Copyright (C) 199x Landon Dyer, 2011-2019 Reboot\n"
217 "V%01i.%01i.%01i %s (%s)\n\n", MAJOR, MINOR, PATCH, __DATE__, PLATFORM);
222 // Parse optimisation options
224 int ParseOptimization(char * optstring)
228 if (*optstring == '+')
230 else if (*optstring != '~')
233 if ((optstring[2] == 'a' || optstring[2] == 'A')
234 && (optstring[3] == 'l' || optstring[3] == 'L')
235 && (optstring[4] == 'l' || optstring[4] == 'L'))
237 memset(optim_flags, onoff, OPT_COUNT * sizeof(int));
240 else if (optstring[1] == 'o' || optstring[1] == 'O') // Turn on specific optimisation
242 int opt_no = atoi(&optstring[2]);
244 if ((opt_no >= 0) && (opt_no < OPT_COUNT))
246 optim_flags[opt_no] = onoff;
260 // Process command line arguments and do an assembly
262 int Process(int argc, char ** argv)
264 int argno; // Argument number
265 SYM * sy; // Pointer to a symbol record
266 char * s; // String pointer
267 int fd; // File descriptor
268 char fnbuf[FNSIZ]; // Filename buffer
271 errcnt = 0; // Initialise error count
272 listing = 0; // Initialise listing level
273 list_flag = 0; // Initialise listing flag
274 verb_flag = perm_verb_flag; // Initialise verbose flag
275 as68_flag = 0; // Initialise as68 kludge mode
276 glob_flag = 0; // Initialise .globl flag
277 sbra_flag = 0; // Initialise short branch flag
278 debug = 0; // Initialise debug flag
279 searchpath = NULL; // Initialise search path
280 objfname = NULL; // Initialise object filename
281 list_fname = NULL; // Initialise listing filename
282 err_fname = NULL; // Initialise error filename
283 obj_format = BSD; // Initialise object format
284 firstfname = NULL; // Initialise first filename
285 err_fd = ERROUT; // Initialise error file descriptor
286 err_flag = 0; // Initialise error flag
287 rgpu = 0; // Initialise GPU assembly flag
288 rdsp = 0; // Initialise DSP assembly flag
289 robjproc = 0; // Initialise OP assembly flag
290 lsym_flag = 1; // Include local symbols in object file
291 regbank = BANK_N; // No RISC register bank specified
292 orgactive = 0; // Not in RISC org section
293 orgwarning = 0; // No ORG warning issued
294 segpadsize = 2; // Initialise segment padding size
295 m6502 = 0; // 6502 mode off by default
297 // Initialise modules
298 InitSymbolTable(); // Symbol table
299 InitTokenizer(); // Tokenizer
300 InitLineProcessor(); // Line processor
301 InitExpression(); // Expression analyzer
302 InitSection(); // Section manager / code generator
303 InitMark(); // Mark tape-recorder
304 InitMacro(); // Macro processor
305 InitListing(); // Listing generator
306 Init6502(); // 6502 assembler
308 // Process command line arguments and assemble source files
309 for(argno=0; argno<argc; argno++)
311 if (*argv[argno] == '-')
313 switch (argv[argno][1])
315 case 'd': // Define symbol
317 for(s=argv[argno]+2; *s!=EOS;)
326 if (argv[argno][2] == EOS)
328 printf("-d: empty symbol\n");
333 sy = lookup(argv[argno] + 2, 0, 0);
337 sy = NewSymbol(argv[argno] + 2, LABEL, 0);
341 sy->sattr = DEFINED | EQUATED | ABS;
342 sy->svalue = (*s ? (uint64_t)atoi(s) : 0);
344 case 'e': // Redirect error message output
346 err_fname = argv[argno] + 2;
348 case 'f': // -f<format>
350 switch (argv[argno][2])
353 case 'a': // -fa = Alcyon [the default]
357 case 'b': // -fb = BSD (Jaguar Recommended: 3 out 4 jaguars recommend it!)
361 case 'e': // -fe = ELF
365 case 'l': // -fl = LOD
369 case 'p': // -fp = P56
373 case 'x': // -fx = COM/EXE/XEX
378 printf("-f: unknown object format specified\n");
383 case 'g': // Debugging flag
385 printf("Debugging flag (-g) not yet implemented\n");
387 case 'i': // Set directory search path
389 searchpath = argv[argno] + 2;
391 case 'l': // Produce listing file
393 if (*(argv[argno] + 2) == '*')
395 list_fname = argv[argno] + 3;
396 list_pag = 0; // Special case - turn off pagination
400 list_fname = argv[argno] + 2;
409 if (strcmp(argv[argno] + 2, "68000") == 0)
411 else if (strcmp(argv[argno] + 2, "68020") == 0)
413 else if (strcmp(argv[argno] + 2, "68030") == 0)
415 else if (strcmp(argv[argno] + 2, "68040") == 0)
417 else if (strcmp(argv[argno] + 2, "68060") == 0)
419 else if (strcmp(argv[argno] + 2, "68881") == 0)
421 else if (strcmp(argv[argno] + 2, "68882") == 0)
423 else if (strcmp(argv[argno] + 2, "56001") == 0)
425 else if (strcmp(argv[argno] + 2, "6502") == 0)
427 else if (strcmp(argv[argno] + 2, "tom") == 0)
429 else if (strcmp(argv[argno] + 2, "jerry") == 0)
433 printf("Unrecognized CPU '%s'\n", argv[argno] + 2);
438 case 'o': // Direct object file output
440 if (argv[argno][2] != EOS)
441 objfname = argv[argno] + 2;
446 printf("Missing argument to -o");
451 objfname = argv[argno];
455 case 'p': /* -p: generate ".PRG" executable output */
458 * -p .PRG generation w/o symbols
459 * -ps .PRG generation with symbols
460 * -px .PRG generation with extended symbols
462 switch (argv[argno][2])
479 printf("-p: syntax error\n");
484 // Enforce Alcyon object format - kind of silly
485 // to ask for .prg output without it!
488 case 'r': // Pad seg to requested boundary size
490 switch(argv[argno][2])
492 case 'w': case 'W': segpadsize = 2; break;
493 case 'l': case 'L': segpadsize = 4; break;
494 case 'p': case 'P': segpadsize = 8; break;
495 case 'd': case 'D': segpadsize = 16; break;
496 case 'q': case 'Q': segpadsize = 32; break;
497 default: segpadsize = 2; break; // Effective autoeven();
500 case 's': // Warn about possible short branches
504 case 'u': // Make undefined symbols .globl
508 case 'v': // Verbose flag
516 case 'x': // Turn on debugging
519 printf("~ Debugging ON\n");
521 case 'y': // -y<pagelen>
523 pagelen = atoi(argv[argno] + 2);
527 printf("-y: bad page length\n");
533 case EOS: // Input is stdin
534 if (firstfname == NULL) // Kludge first filename
535 firstfname = defname;
537 include(0, "(stdin)");
540 case 'h': // Display command line usage
547 case 'n': // Turn off legacy mode
550 printf("Legacy mode OFF\n");
554 printf("Unknown switch: %s\n\n", argv[argno]);
560 else if (*argv[argno] == '+' || *argv[argno] == '~')
562 if (ParseOptimization(argv[argno]) != OK)
565 printf("Unknown switch: %s\n\n", argv[argno]);
573 // Record first filename.
574 if (firstfname == NULL)
575 firstfname = argv[argno];
577 strcpy(fnbuf, argv[argno]);
578 fext(fnbuf, ".s", 0);
583 printf("Cannot open: %s\n", fnbuf);
593 // Wind-up processing;
594 // o save current section (no more code generation)
595 // o do auto-even of all sections (or boundary alignment as requested
597 // o save the last pc value for 6502 (if we used 6502 at all) and
598 // detemine if the last section contains anything
599 // o determine name of object file:
600 // - "foo.o" for linkable output;
601 // - "foo.prg" for GEMDOS executable (-p flag).
603 int temp_section = cursect;
605 for(i=TEXT; i<=BSS; i<<=1)
611 case 2: d_even(); break;
612 case 4: d_long(); break;
613 case 8: d_phrase(); break;
614 case 16: d_dphrase(); break;
615 case 32: d_qphrase(); break;
621 SwitchSection(M6502);
623 if (sloc != currentorg[0])
625 currentorg[1] = sloc;
629 // This looks like an awful kludge... !!! FIX !!!
630 if (temp_section & (M56001P | M56001X | M56001Y))
632 SwitchSection(temp_section);
634 if (chptr != dsp_currentorg->start)
636 dsp_currentorg->end = chptr;
643 if (objfname == NULL)
645 if (firstfname == NULL)
646 firstfname = defname;
648 strcpy(fnbuf, firstfname);
649 fext(fnbuf, (prg_flag ? ".prg" : ".o"), 1);
653 // With one pass finished, go back and:
654 // (1) run through all the fixups and resolve forward references;
655 // (1.5) ensure that remaining fixups can be handled by the linker
656 // (`lo68' format, extended (postfix) format....)
657 // (2) generate the output file image and symbol table;
658 // (3) generate relocation information from left-over fixups.
659 ResolveAllFixups(); // Do all fixups
660 StopMark(); // Stop mark tape-recorder
664 if ((fd = open(objfname, _OPEN_FLAGS, _PERM_MODE)) < 0)
665 CantCreateFile(objfname);
669 s = (prg_flag ? "executable" : "object");
670 printf("[Writing %s file: %s]\n", s, objfname);
683 printf("[Wrapping-up listing file]\n");
693 DEBUG dump_everything();
700 // Determine processor endianess
702 int GetEndianess(void)
705 char * p = (char *)&i;
715 // Application entry point
717 int main(int argc, char ** argv)
719 perm_verb_flag = 0; // Clobber "permanent" verbose flag
720 legacy_flag = 1; // Default is legacy mode on (:-P)
722 // Set legacy optimisation flags to on and everything else to off
723 memset(optim_flags, 0, OPT_COUNT * sizeof(int));
724 optim_flags[OPT_ABS_SHORT] =
725 optim_flags[OPT_MOVEL_MOVEQ] =
726 optim_flags[OPT_BSR_BCC_S] = 1;
728 cmdlnexec = argv[0]; // Obtain executable name
729 endian = GetEndianess(); // Get processor endianess
731 // If commands were passed in, process them
733 return Process(argc - 1, argv + 1);