2 // RMAC - Reboot's Macro Assembler for the Atari Jaguar Console System
3 // RMAC.C - Main Application Code
4 // Copyright (C) 199x Landon Dyer, 2011 - 2016 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
25 int perm_verb_flag; // Permanently verbose, interactive mode
26 int list_flag; // "-l" listing flag on command line
27 int verb_flag; // Be verbose about what's going on
28 int as68_flag; // as68 kludge mode
29 int glob_flag; // Assume undefined symbols are global
30 int lsym_flag; // Include local symbols in object file
31 int sbra_flag; // Warn about possible short branches
32 int prg_flag; // !=0, produce .PRG executable (2=symbols)
33 int legacy_flag; // Do stuff like insert code in RISC assembler
34 int obj_format; // Object format flag
35 int debug; // [1..9] Enable debugging levels
36 int err_flag; // '-e' specified
37 int err_fd; // File to write error messages to
38 int rgpu, rdsp; // Assembling Jaguar GPU or DSP code
39 int list_fd; // File to write listing to
40 int regbank; // RISC register bank
41 int segpadsize; // Segment padding size
42 int endian; // Host processor endianess (0 = LE, 1 = BE)
43 char * objfname; // Object filename pointer
44 char * firstfname; // First source filename
45 char * cmdlnexec; // Executable name, pointer to ARGV[0]
46 char * searchpath; // Search path for include files
47 char defname[] = "noname.o"; // Default output filename
48 int optim_flags[OPT_COUNT]; // Specific optimisations on/off matrix
51 // Manipulate file extension.
53 // 'name' must be large enough to hold any possible filename. If 'stripp' is
54 // nonzero, any old extension is removed. If the file does not already have an
55 // extension, 'extension' is appended to the filename.
57 char * fext(char * name, char * extension, int stripp)
61 // Find beginning of "real" name (strip off path)
62 char * beg = strrchr(name, SLASHCHAR);
67 // Clobber any old extension, if requested
70 for(s=beg; *s && *s!='.'; ++s)
76 if (strrchr(beg, '.') == NULL)
77 strcat(beg, extension);
84 // Return 'item'nth element of semicolon-seperated pathnames specified in the
85 // enviroment string 's'. Copy the pathname to 'buf'. Return 0 if the 'item'
86 // nth path doesn't exist.
88 // ['item' ranges from 0 to N-1, where N = #elements in search path]
90 int nthpath(char * env_var, int itemno, char * buf)
92 char * s = searchpath;
101 while (*s != EOS && *s++ != ';')
107 while (*s != EOS && *s != ';')
117 // Display command line help
119 void DisplayHelp(void)
122 " %s [options] srcfile\n"
125 " -? or -h Display usage information\n"
126 " -dsymbol[=value] Define symbol\n"
127 " -e[errorfile] Send error messages to file, not stdout\n"
128 " -f[format] Output object file format\n"
129 " a: ALCYON (use this for ST)\n"
130 " b: BSD (use this for Jaguar)\n"
132 " -i[path] Directory to search for include files\n"
133 " -l[filename] Create an output listing file\n"
134 " -n Don't do things behind your back in RISC assembler\n"
135 " -o file Output file name\n"
136 " +o[value] Turn a specific optimisation on\n"
137 " ~o[value] Turn a specific optimisation off\n"
138 " +oall Turn all optimisations on\n"
139 " ~oall Turn all optimisations off\n"
140 " -p Create an ST .prg (without symbols)\n"
141 " -ps Create an ST .prg (with symbols)\n"
143 " -r[size] Pad segments to boundary size specified\n"
144 " w: word (2 bytes, default alignment)\n"
145 " l: long (4 bytes)\n"
146 " p: phrase (8 bytes)\n"
147 " d: double phrase (16 bytes)\n"
148 " q: quad phrase (32 bytes)\n"
149 " -s Warn about possible short branches\n"
150 " and applied optimisations\n"
151 " -u Force referenced and undefined symbols global\n"
152 " -v Set verbose mode\n"
153 " -x Turn on debugging mode\n"
154 " -y[pagelen] Set page line length (default: 61)\n"
160 // Display version information
162 void DisplayVersion(void)
165 " _ __ _ __ ___ __ _ ___ \n"
166 "| '__| '_ ` _ \\ / _` |/ __|\n"
167 "| | | | | | | | (_| | (__ \n"
168 "|_| |_| |_| |_|\\__,_|\\___|\n"
169 "\nReboot's Macro Assembler\n"
170 "Copyright (C) 199x Landon Dyer, 2011-2017 Reboot\n"
171 "V%01i.%01i.%01i %s (%s)\n\n", MAJOR, MINOR, PATCH, __DATE__, PLATFORM);
176 // Parse optimisation options
178 int ParseOptimization(char * optstring)
182 if (*optstring == '+')
184 else if (*optstring != '~')
187 if ((optstring[2] == 'a' || optstring[2] == 'A')
188 && (optstring[3] == 'l' || optstring[3] == 'L')
189 && (optstring[4] == 'l' || optstring[4] == 'L'))
191 memset(optim_flags, onoff, OPT_COUNT * sizeof(int));
194 else if (optstring[1] == 'o' || optstring[1] == 'O') // Turn on specific optimisation
196 int opt_no = atoi(&optstring[2]);
198 if ((opt_no >= 0) && (opt_no < OPT_COUNT))
200 optim_flags[opt_no] = onoff;
214 // Process command line arguments and do an assembly
216 int Process(int argc, char ** argv)
218 int argno; // Argument number
219 SYM * sy; // Pointer to a symbol record
220 char * s; // String pointer
221 int fd; // File descriptor
222 char fnbuf[FNSIZ]; // Filename buffer
225 errcnt = 0; // Initialise error count
226 listing = 0; // Initialise listing level
227 list_flag = 0; // Initialise listing flag
228 verb_flag = perm_verb_flag; // Initialise verbose flag
229 as68_flag = 0; // Initialise as68 kludge mode
230 glob_flag = 0; // Initialise .globl flag
231 sbra_flag = 0; // Initialise short branch flag
232 debug = 0; // Initialise debug flag
233 searchpath = NULL; // Initialise search path
234 objfname = NULL; // Initialise object filename
235 list_fname = NULL; // Initialise listing filename
236 err_fname = NULL; // Initialise error filename
237 obj_format = BSD; // Initialise object format
238 firstfname = NULL; // Initialise first filename
239 err_fd = ERROUT; // Initialise error file descriptor
240 err_flag = 0; // Initialise error flag
241 rgpu = 0; // Initialise GPU assembly flag
242 rdsp = 0; // Initialise DSP assembly flag
243 lsym_flag = 1; // Include local symbols in object file
244 regbank = BANK_N; // No RISC register bank specified
245 orgactive = 0; // Not in RISC org section
246 orgwarning = 0; // No ORG warning issued
247 segpadsize = 2; // Initialise segment padding size
249 // Initialise modules
250 InitSymbolTable(); // Symbol table
251 InitTokenizer(); // Tokenizer
252 InitLineProcessor(); // Line processor
253 InitExpression(); // Expression analyzer
254 InitSection(); // Section manager / code generator
255 InitMark(); // Mark tape-recorder
256 InitMacro(); // Macro processor
257 InitListing(); // Listing generator
259 // Process command line arguments and assemble source files
260 for(argno=0; argno<argc; ++argno)
262 if (*argv[argno] == '-')
264 switch (argv[argno][1])
266 case 'd': // Define symbol
268 for(s=argv[argno]+2; *s!=EOS;)
277 if (argv[argno][2] == EOS)
279 printf("-d: empty symbol\n");
284 sy = lookup(argv[argno] + 2, 0, 0);
288 sy = NewSymbol(argv[argno] + 2, LABEL, 0);
292 sy->sattr = DEFINED | EQUATED | ABS;
293 sy->svalue = (*s ? (VALUE)atoi(s) : 0);
295 case 'e': // Redirect error message output
297 err_fname = argv[argno] + 2;
299 case 'f': // -f<format>
301 switch (argv[argno][2])
304 case 'a': // -fa = Alcyon [the default]
308 case 'b': // -fb = BSD (Jaguar Recommended: 3 out 4 jaguars recommend it!)
312 case 'e': // -fe = ELF
317 printf("-f: unknown object format specified\n");
322 case 'g': // Debugging flag
324 printf("Debugging flag (-g) not yet implemented\n");
326 case 'i': // Set directory search path
328 searchpath = argv[argno] + 2;
330 case 'l': // Produce listing file
332 list_fname = argv[argno] + 2;
337 case 'o': // Direct object file output
339 if (argv[argno][2] != EOS)
340 objfname = argv[argno] + 2;
345 printf("Missing argument to -o");
350 objfname = argv[argno];
354 case 'p': /* -p: generate ".PRG" executable output */
357 * -p .PRG generation w/o symbols
358 * -ps .PRG generation with symbols
360 switch (argv[argno][2])
372 printf("-p: syntax error\n");
377 // Enforce Alcyon object format - kind of silly
378 // to ask for .prg output without it!
381 case 'r': // Pad seg to requested boundary size
383 switch(argv[argno][2])
385 case 'w': case 'W': segpadsize = 2; break;
386 case 'l': case 'L': segpadsize = 4; break;
387 case 'p': case 'P': segpadsize = 8; break;
388 case 'd': case 'D': segpadsize = 16; break;
389 case 'q': case 'Q': segpadsize = 32; break;
390 default: segpadsize = 2; break; // Effective autoeven();
393 case 's': // Warn about possible short branches
397 case 'u': // Make undefined symbols .globl
401 case 'v': // Verbose flag
409 case 'x': // Turn on debugging
412 printf("~ Debugging ON\n");
414 case 'y': // -y<pagelen>
416 pagelen = atoi(argv[argno] + 2);
420 printf("-y: bad page length\n");
426 case EOS: // Input is stdin
427 if (firstfname == NULL) // Kludge first filename
428 firstfname = defname;
430 include(0, "(stdin)");
433 case 'h': // Display command line usage
440 case 'n': // Turn off legacy mode
443 printf("Legacy mode OFF\n");
447 printf("Unknown switch: %s\n\n", argv[argno]);
453 else if (*argv[argno] == '+' || *argv[argno] == '~')
455 if (ParseOptimization(argv[argno]) != OK)
458 printf("Unknown switch: %s\n\n", argv[argno]);
466 // Record first filename.
467 if (firstfname == NULL)
468 firstfname = argv[argno];
470 strcpy(fnbuf, argv[argno]);
471 fext(fnbuf, ".s", 0);
476 printf("Cannot open: %s\n", fnbuf);
486 // Wind-up processing;
487 // o save current section (no more code generation)
488 // o do auto-even of all sections (or boundary alignment as requested
490 // o determine name of object file:
491 // - "foo.o" for linkable output;
492 // - "foo.prg" for GEMDOS executable (-p flag).
495 for(i=TEXT; i<=BSS; i<<=1)
501 case 2: d_even(); break;
502 case 4: d_long(); break;
503 case 8: d_phrase(); break;
504 case 16: d_dphrase(); break;
505 case 32: d_qphrase(); break;
511 if (objfname == NULL)
513 if (firstfname == NULL)
514 firstfname = defname;
516 strcpy(fnbuf, firstfname);
517 fext(fnbuf, (prg_flag ? ".prg" : ".o"), 1);
521 // With one pass finished, go back and:
522 // (1) run through all the fixups and resolve forward references;
523 // (1.5) ensure that remaining fixups can be handled by the linker
524 // (`lo68' format, extended (postfix) format....)
525 // (2) generate the output file image and symbol table;
526 // (3) generate relocation information from left-over fixups.
527 ResolveAllFixups(); // Do all fixups
528 StopMark(); // Stop mark tape-recorder
532 if ((fd = open(objfname, _OPEN_FLAGS, _PERM_MODE)) < 0)
537 s = (prg_flag ? "executable" : "object");
538 printf("[Writing %s file: %s]\n", s, objfname);
551 printf("[Wrapping-up listing file]\n");
561 DEBUG dump_everything();
568 // Determine processor endianess
570 int GetEndianess(void)
573 char * p = (char *)&i;
583 // Application entry point
585 int main(int argc, char ** argv)
587 perm_verb_flag = 0; // Clobber "permanent" verbose flag
588 legacy_flag = 1; // Default is legacy mode on (:-P)
590 // Set legacy optimisation flags to on
591 // and everything else to off
592 memset(optim_flags, 0, OPT_COUNT * sizeof(int));
593 optim_flags[OPT_ABS_SHORT] =
594 optim_flags[OPT_MOVEL_MOVEQ] =
595 optim_flags[OPT_BSR_BCC_S] = 1;
597 cmdlnexec = argv[0]; // Obtain executable name
599 endian = GetEndianess(); // Get processor endianess
601 // If commands were passed in, process them
603 return Process(argc - 1, argv + 1);