Commit | Line | Data |
---|---|---|
f70ab843 RH |
1 | /* |
2 | * Copyright (c) 1982 Regents of the University of California | |
3 | */ | |
4 | #ifndef lint | |
ec43bca4 | 5 | static char sccsid[] = "@(#)asmain.c 4.11 %G%"; |
f70ab843 RH |
6 | #endif not lint |
7 | ||
59e14996 BJ |
8 | #include <stdio.h> |
9 | #include <ctype.h> | |
59e14996 | 10 | #include <signal.h> |
59e14996 BJ |
11 | |
12 | #include "as.h" | |
13 | #include "assyms.h" | |
59e14996 | 14 | #include "asscan.h" |
f70ab843 | 15 | #include "asexpr.h" |
59e14996 BJ |
16 | |
17 | #ifdef UNIX | |
ec43bca4 | 18 | #define unix_lang_name "VAX/UNIX Assembler V%G% 4.11" |
59e14996 BJ |
19 | #endif |
20 | ||
21 | #ifdef VMS | |
451260e7 | 22 | #define vms_lang_name "VAX/VMS C Assembler V1.00" |
59e14996 BJ |
23 | #endif VMS |
24 | ||
25 | /* | |
26 | * variables to manage reading the assembly source files | |
27 | */ | |
28 | char *dotsname; /*the current file name; managed by the parser*/ | |
29 | int lineno; /*current line number; managed by the parser*/ | |
100d3f3c | 30 | char **innames; /*names of the files being assembled*/ |
59e14996 BJ |
31 | int ninfiles; /*how many interesting files there are*/ |
32 | /* | |
33 | * Flags settable from the argv process argument list | |
34 | */ | |
35 | int silent = 0; /*don't complain about any errors*/ | |
36 | int savelabels = 0; /*write the labels to the a.out file*/ | |
37 | int d124 = 4; /*default allocate 4 bytes for unknown pointers*/ | |
38 | int anyerrs = 0; /*no errors yet*/ | |
f70ab843 | 39 | int anywarnings=0; /*no warnings yet*/ |
59e14996 BJ |
40 | int orgwarn = 0; /*Bad origins*/ |
41 | int passno = 1; /* current pass*/ | |
e5b9ebfb | 42 | int jxxxJUMP = 0; /* in jxxxes that branch too far, use jmp instead of brw */ |
ed84d47b | 43 | int readonlydata = 0; /* initialzed data -> text space */ |
59e14996 | 44 | |
f70ab843 RH |
45 | int nGHnumbers = 0; /* GH numbers used */ |
46 | int nGHopcodes = 0; /* GH opcodes used */ | |
47 | int nnewopcodes = 0; /* new opcodes used */ | |
48 | ||
59e14996 BJ |
49 | #ifdef DEBUG |
50 | int debug = 0; | |
51 | int toktrace = 0; | |
52 | #endif | |
53 | ||
54 | int useVM = /*put the temp file in virtual memory*/ | |
55 | #ifdef VMS | |
56 | 1; /*VMS has virtual memory (duh)*/ | |
57 | #endif VMS | |
58 | #ifdef UNIX | |
59 | 0; | |
60 | #endif | |
61 | ||
62 | char *endcore; /*where to get more symbol space*/ | |
63 | ||
64 | /* | |
65 | * Managers of the a.out file. | |
66 | */ | |
67 | struct exec hdr; | |
ed84d47b | 68 | #define MAGIC 0407 |
59e14996 BJ |
69 | u_long tsize; /* total text size */ |
70 | u_long dsize; /* total data size */ | |
71 | u_long datbase; /* base of the data segment */ | |
72 | u_long trsize; /* total text relocation size */ | |
73 | u_long drsize; /* total data relocation size */ | |
74 | ||
75 | /* | |
76 | * Information about the current segment is accumulated in | |
77 | * usedot; the most important information stored is the | |
78 | * accumulated size of each of the text and data segments | |
79 | * | |
80 | * dotp points to the correct usedot expression for the current segment | |
81 | */ | |
82 | struct exp usedot[NLOC+NLOC]; /* info about all segments */ | |
83 | struct exp *dotp; /* data/text location pointer */ | |
84 | /* | |
ec43bca4 | 85 | * The inter pass temporary token file is opened and closed by stdio, but |
59e14996 BJ |
86 | * is written to using direct read/write, as the temporary file |
87 | * is composed of buffers exactly BUFSIZ long. | |
88 | */ | |
ec43bca4 RH |
89 | FILE *tokfile; /* interpass communication file */ |
90 | char tokfilename[TNAMESIZE]; | |
91 | /* | |
92 | * The string file is the string table | |
93 | * cat'ed to the end of the built up a.out file | |
94 | */ | |
95 | FILE *strfile; /* interpass string file */ | |
96 | char strfilename[TNAMESIZE]; | |
97 | int strfilepos = 0; /* position within the string file */ | |
59e14996 BJ |
98 | /* |
99 | * a.out is created during the second pass. | |
100 | * It is opened by stdio, but is filled with the parallel | |
101 | * block I/O library | |
102 | */ | |
103 | char *outfile = "a.out"; | |
104 | FILE *a_out_file; | |
105 | off_t a_out_off; /* cumulative offsets for segments */ | |
106 | /* | |
107 | * The logical files containing the assembled data for each of | |
108 | * the text and data segments are | |
109 | * managed by the parallel block I/O library. | |
110 | * a.out is logically opened in many places at once to | |
111 | * receive the assembled data from the various segments as | |
112 | * it all trickles in, but is physically opened only once | |
113 | * to minimize file overhead. | |
114 | */ | |
115 | BFILE *usefile[NLOC+NLOC]; /* text/data files */ | |
116 | BFILE *txtfil; /* current text/data file */ | |
117 | /* | |
118 | * Relocation information is accumulated seperately for each | |
119 | * segment. This is required by the old loader (from BTL), | |
120 | * but not by the new loader (Bill Joy). | |
121 | * | |
122 | * However, the size of the relocation information can not be computed | |
123 | * during or after the 1st pass because the ''absoluteness' of values | |
124 | * is unknown until all locally declared symbols have been seen. | |
125 | * Thus, the size of the relocation information is only | |
126 | * known after the second pass is finished. | |
127 | * This obviates the use of the block I/O | |
128 | * library, which requires knowing the exact offsets in a.out. | |
129 | * | |
130 | * So, we save the relocation information internally (we don't | |
131 | * go to internal files to minimize overhead). | |
132 | * | |
133 | * Empirically, we studied 259 files composing the system, | |
134 | * two compilers and a compiler generator: (all of which have | |
135 | * fairly large source files) | |
136 | * | |
137 | * Number of files = 259 | |
138 | * Number of non zero text reloc files: 233 | |
139 | * Number of non zero data reloc files: 53 | |
140 | * Average text relocation = 889 | |
141 | * Average data relocation = 346 | |
142 | * Number of files > BUFSIZ text relocation = 71 | |
143 | * Number of files > BUFSIZ data relocation = 6 | |
144 | * | |
145 | * For compiled C code, there is usually one text segment and two | |
146 | * data segments; we see that allocating our own buffers and | |
147 | * doing our internal handling of relocation information will, | |
148 | * on the average, not use more memory than taken up by the buffers | |
149 | * allocated for doing file I/O in parallel to a number of file. | |
150 | * | |
151 | * If we are assembling with the -V option, we | |
152 | * use the left over token buffers from the 2nd pass, | |
153 | * otherwise, we create our own. | |
154 | * | |
155 | * When the 2nd pass is complete, closeoutrel flushes the token | |
156 | * buffers out to a BFILE. | |
157 | * | |
158 | * The internals to relbufdesc are known only in assyms.c | |
159 | * | |
160 | * outrel constructs the relocation information. | |
161 | * closeoutrel flushes the relocation information to relfil. | |
162 | */ | |
163 | struct relbufdesc *rusefile[NLOC+NLOC]; | |
164 | struct relbufdesc *relfil; /* un concatnated relocation info */ | |
165 | BFILE *relocfile; /* concatnated relocation info */ | |
166 | /* | |
167 | * Once the relocation information has been written, | |
168 | * we can write out the symbol table using the Block I/O | |
169 | * mechanisms, as we once again know the offsets into | |
170 | * the a.out file. | |
171 | * | |
172 | * We use relfil to output the symbol table information. | |
173 | */ | |
174 | ||
175 | char *tmpdirprefix = | |
176 | #ifdef UNIX | |
177 | "/tmp/"; | |
178 | #else VMS | |
179 | "/usr/tmp/"; | |
180 | #endif | |
181 | ||
59e14996 BJ |
182 | |
183 | int delexit(); | |
184 | ||
185 | main(argc, argv) | |
186 | int argc; | |
187 | char **argv; | |
188 | { | |
f70ab843 | 189 | char *sbrk(); |
59e14996 | 190 | |
ec43bca4 RH |
191 | tokfilename[0] = 0; |
192 | strfilename[0] = 0; | |
f70ab843 | 193 | endcore = sbrk(0); |
59e14996 BJ |
194 | |
195 | argprocess(argc, argv); /* process argument lists */ | |
196 | if (anyerrs) exit(1); | |
197 | ||
198 | initialize(); | |
199 | zeroorigins(); /* set origins to zero */ | |
200 | zerolocals(); /* fix local label counters */ | |
201 | ||
202 | i_pass1(); /* open temp files, etc */ | |
203 | pass1(); /* first pass through .s files */ | |
204 | testlocals(); /* check for undefined locals */ | |
205 | if (anyerrs) delexit(); | |
206 | ||
207 | pass1_5(); /* resolve jxxx */ | |
208 | if (anyerrs) delexit(); | |
209 | ||
210 | open_a_out(); /* open a.out */ | |
7a5aec15 | 211 | roundsegments(); /* round segments to FW */ |
59e14996 BJ |
212 | build_hdr(); /* build initial header, and output */ |
213 | ||
214 | i_pass2(); /* reopen temporary file, etc */ | |
215 | pass2(); /* second pass through the virtual .s */ | |
216 | if (anyerrs) delexit(); | |
217 | ||
7a5aec15 | 218 | fillsegments(); /* fill segments with 0 to FW */ |
59e14996 BJ |
219 | reloc_syms(); /* dump relocation and symbol table */ |
220 | ||
221 | delete(); /* remove tmp file */ | |
222 | bflush(); /* close off block I/O view of a.out */ | |
223 | fix_a_out(); /* add in text and data reloc counts */ | |
224 | ||
225 | if (anyerrs == 0 && orgwarn) | |
226 | yyerror("Caution: absolute origins.\n"); | |
f70ab843 RH |
227 | |
228 | if (nGHnumbers) | |
229 | yywarning("Caution: G or H format floating point numbers"); | |
230 | if (nGHopcodes) | |
231 | yywarning("Caution: G or H format floating point operators"); | |
232 | if (nnewopcodes) | |
233 | yywarning("Caution: New Opcodes"); | |
234 | if (nGHnumbers || nGHopcodes || nnewopcodes) | |
235 | yywarning("These are not defined for all implementations of the VAX architecture.\n"); | |
236 | ||
59e14996 BJ |
237 | exit(anyerrs != 0); |
238 | } /*end of UNIX main*/ | |
239 | ||
240 | argprocess(argc, argv) | |
241 | int argc; | |
242 | char *argv[]; | |
243 | { | |
244 | register char *cp; | |
245 | ||
246 | ninfiles = 0; | |
247 | silent = 0; | |
248 | #ifdef DEBUG | |
249 | debug = 0; | |
250 | #endif | |
100d3f3c | 251 | innames = (char **)ClearCalloc(argc+1, sizeof (innames[0])); |
59e14996 BJ |
252 | dotsname = "<argv error>"; |
253 | while (argc > 1) { | |
100d3f3c BJ |
254 | if (argv[1][0] != '-') |
255 | innames[ninfiles++] = argv[1]; | |
256 | else { | |
59e14996 BJ |
257 | cp = argv[1] + 1; |
258 | /* | |
259 | * We can throw away single minus signs, so | |
260 | * that make scripts for the PDP 11 assembler work | |
261 | * on this assembler too | |
262 | */ | |
263 | while (*cp){ | |
264 | switch(*cp++){ | |
265 | default: | |
266 | yyerror("Unknown flag: %c", *--cp); | |
267 | cp++; | |
268 | break; | |
26c6a2ae RH |
269 | case 'v': |
270 | selfwhat(stdout); | |
271 | exit(1); | |
59e14996 BJ |
272 | case 'd': |
273 | d124 = *cp++ - '0'; | |
274 | if ( (d124 != 1) && (d124 != 2) && | |
275 | (d124 != 4)){ | |
276 | yyerror("-d[124] only"); | |
277 | exit(1); | |
278 | } | |
279 | break; | |
280 | case 'o': | |
281 | if (argc < 3){ | |
282 | yyerror("-o what???"); | |
283 | exit(1); | |
284 | } | |
285 | outfile = argv[2]; | |
286 | bumpone: | |
287 | argc -= 2; | |
288 | argv += 2; | |
289 | goto nextarg; | |
290 | ||
291 | case 't': | |
292 | if (argc < 3){ | |
293 | yyerror("-t what???"); | |
294 | exit(1); | |
295 | } | |
296 | tmpdirprefix = argv[2]; | |
297 | goto bumpone; | |
298 | ||
299 | case 'V': | |
300 | useVM = 1; | |
301 | break; | |
302 | case 'W': | |
303 | silent = 1; | |
304 | break; | |
305 | case 'L': | |
306 | savelabels = 1; | |
307 | break; | |
e5b9ebfb RH |
308 | case 'J': |
309 | jxxxJUMP = 1; | |
310 | break; | |
59e14996 BJ |
311 | #ifdef DEBUG |
312 | case 'D': | |
313 | debug = 1; | |
314 | break; | |
315 | case 'T': | |
316 | toktrace = 1; | |
317 | break; | |
318 | #endif | |
ed84d47b BJ |
319 | case 'R': |
320 | readonlydata = 1; | |
321 | break; | |
59e14996 BJ |
322 | } /*end of the switch*/ |
323 | } /*end of pulling out all arguments*/ | |
324 | } /*end of a flag argument*/ | |
59e14996 BJ |
325 | --argc; ++argv; |
326 | nextarg:; | |
327 | } | |
100d3f3c | 328 | /* innames[ninfiles] = 0; */ |
59e14996 | 329 | } |
26c6a2ae RH |
330 | /* |
331 | * poke through the data space and find all sccs identifiers. | |
332 | * We assume: | |
333 | * a) that extern char **environ; is the first thing in the bss | |
334 | * segment (true, if one is using the new version of cmgt.crt0.c) | |
335 | * b) that the sccsid's have not been put into text space. | |
336 | */ | |
337 | selfwhat(place) | |
338 | FILE *place; | |
339 | { | |
340 | extern char **environ; | |
341 | register char *ub; | |
342 | register char *cp; | |
343 | register char *pat; | |
344 | char *sbrk(); | |
345 | ||
346 | for (cp = (char *)&environ, ub = sbrk(0); cp < ub; cp++){ | |
347 | if (cp[0] != '@') continue; | |
348 | if (cp[1] != '(') continue; | |
349 | if (cp[2] != '#') continue; | |
350 | if (cp[3] != ')') continue; | |
351 | fputc('\t', place); | |
352 | for (cp += 4; cp < ub; cp++){ | |
353 | if (*cp == 0) break; | |
354 | if (*cp == '>') break; | |
355 | if (*cp == '\n') break; | |
356 | fputc(*cp, place); | |
357 | } | |
358 | fputc('\n', place); | |
359 | } | |
360 | } | |
59e14996 BJ |
361 | |
362 | initialize() | |
363 | { | |
364 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) | |
365 | signal(SIGINT, delexit); | |
366 | /* | |
367 | * Install symbols in the table | |
368 | */ | |
369 | symtabinit(); | |
370 | syminstall(); | |
371 | /* | |
372 | * Build the expression parser accelerator token sets | |
373 | */ | |
374 | buildtokensets(); | |
375 | } | |
376 | ||
377 | zeroorigins() | |
378 | { | |
379 | register int locindex; | |
380 | /* | |
381 | * Mark usedot: the first NLOC slots are for named text segments, | |
382 | * the next for named data segments. | |
383 | */ | |
384 | for (locindex = 0; locindex < NLOC; locindex++){ | |
451260e7 RH |
385 | usedot[locindex].e_xtype = XTEXT; |
386 | usedot[NLOC + locindex].e_xtype = XDATA; | |
387 | usedot[locindex].e_xvalue = 0; | |
388 | usedot[NLOC + locindex].e_xvalue = 0; | |
59e14996 BJ |
389 | } |
390 | } | |
391 | ||
392 | zerolocals() | |
393 | { | |
394 | register int i; | |
395 | ||
396 | for (i = 0; i <= 9; i++) { | |
397 | lgensym[i] = 1; | |
398 | genref[i] = 0; | |
399 | } | |
400 | } | |
401 | ||
402 | i_pass1() | |
403 | { | |
ec43bca4 RH |
404 | FILE *tempopen(); |
405 | if (useVM == 0) | |
406 | tokfile = tempopen(tokfilename, "T"); | |
407 | strfile = tempopen(strfilename, "S"); | |
408 | /* | |
409 | * write out the string length. | |
410 | * This will be overwritten when the | |
411 | * strings are tacked onto the growing a.out file | |
412 | */ | |
413 | strfilepos = sizeof(int); | |
414 | fwrite(&strfilepos, sizeof(int), 1, strfile); | |
59e14996 | 415 | |
ec43bca4 | 416 | inittokfile(); |
e5b9ebfb | 417 | initijxxx(); |
59e14996 BJ |
418 | } |
419 | ||
ec43bca4 RH |
420 | FILE *tempopen(tname, part) |
421 | char *tname; | |
422 | char *part; | |
423 | { | |
424 | FILE *file; | |
425 | sprintf(tname, "%s%sas%s%05d", | |
426 | tmpdirprefix, | |
427 | (tmpdirprefix[strlen(tmpdirprefix)-1] != '/') ? "/" : 0, | |
428 | part, | |
429 | getpid()); | |
430 | file = fopen(tname, "w"); | |
431 | if (file == NULL) { | |
432 | yyerror("Bad pass 1 temporary file for writing %s", tname); | |
433 | delexit(); | |
434 | } | |
435 | return(file); | |
436 | } | |
437 | ||
59e14996 BJ |
438 | pass1() |
439 | { | |
440 | register int i; | |
441 | ||
442 | passno = 1; | |
443 | dotp = &usedot[0]; | |
444 | txtfil = (BFILE *)0; | |
445 | relfil = (struct relbufdesc *)0; | |
446 | ||
447 | if (ninfiles == 0){ /*take the input from stdin directly*/ | |
448 | lineno = 1; | |
449 | dotsname = "<stdin>"; | |
450 | ||
451 | yyparse(); | |
452 | } else { /*we have the names tanked*/ | |
453 | for (i = 0; i < ninfiles; i++){ | |
454 | new_dot_s(innames[i]); | |
455 | if (freopen(innames[i], "r", stdin) == NULL) { | |
456 | yyerror( "Can't open source file %s\n", | |
457 | innames[i]); | |
458 | exit(2); | |
459 | } | |
460 | /* stdio is NOT used to read the input characters */ | |
461 | /* we use read directly, into our own buffers */ | |
462 | yyparse(); | |
463 | } | |
464 | } | |
465 | ||
ec43bca4 | 466 | closetokfile(); /*kick out the last buffered intermediate text*/ |
59e14996 BJ |
467 | } |
468 | ||
469 | testlocals() | |
470 | { | |
471 | register int i; | |
472 | for (i = 0; i <= 9; i++) { | |
473 | if (genref[i]) | |
474 | yyerror("Reference to undefined local label %df", i); | |
475 | lgensym[i] = 1; | |
476 | genref[i] = 0; | |
477 | } | |
478 | } | |
479 | ||
480 | pass1_5() | |
481 | { | |
482 | sortsymtab(); | |
483 | #ifdef DEBUG | |
484 | if (debug) dumpsymtab(); | |
485 | #endif | |
486 | jxxxfix(); | |
487 | #ifdef DEBUG | |
488 | if (debug) dumpsymtab(); | |
489 | #endif | |
490 | } | |
491 | ||
492 | open_a_out() | |
493 | { | |
494 | /* | |
495 | * Open up the a.out file now, and get set to build | |
496 | * up offsets into it for all of the various text,data | |
497 | * text relocation and data relocation segments. | |
498 | */ | |
499 | a_out_file = fopen(outfile, "w"); | |
500 | if (a_out_file == NULL) { | |
501 | yyerror("Cannot create %s", outfile); | |
502 | delexit(); | |
503 | } | |
504 | biofd = a_out_file->_file; | |
505 | a_out_off = 0; | |
506 | } | |
507 | ||
508 | roundsegments() | |
509 | { | |
510 | register int locindex; | |
511 | register long v; | |
512 | /* | |
513 | * round and assign text segment origins | |
514 | * the exec header always goes in usefile[0] | |
515 | */ | |
516 | tsize = 0; | |
517 | for (locindex=0; locindex<NLOC; locindex++) { | |
7a5aec15 | 518 | v = round(usedot[locindex].e_xvalue, FW); |
451260e7 | 519 | usedot[locindex].e_xvalue = tsize; |
59e14996 BJ |
520 | if ((locindex == 0) || (v != 0) ){ |
521 | usefile[locindex] = (BFILE *)Calloc(1, sizeof(BFILE)); | |
522 | bopen(usefile[locindex], a_out_off); | |
523 | if (locindex == 0) | |
524 | a_out_off = sizeof (struct exec); | |
525 | } else { | |
526 | usefile[locindex] = (BFILE *)-1; | |
527 | } | |
528 | tsize += v; | |
529 | a_out_off += v; | |
530 | } | |
531 | /* | |
532 | * Round and assign data segment origins. | |
533 | */ | |
7a5aec15 | 534 | datbase = round(tsize, FW); |
59e14996 | 535 | for (locindex=0; locindex<NLOC; locindex++) { |
7a5aec15 | 536 | v = round(usedot[NLOC+locindex].e_xvalue, FW); |
451260e7 | 537 | usedot[NLOC+locindex].e_xvalue = datbase + dsize; |
59e14996 BJ |
538 | if (v != 0){ |
539 | usefile[NLOC + locindex] = (BFILE *)Calloc(1,sizeof(BFILE)); | |
540 | bopen(usefile[NLOC + locindex], a_out_off); | |
541 | } else { | |
542 | usefile[NLOC + locindex] = (BFILE *)-1; | |
543 | } | |
544 | dsize += v; | |
545 | a_out_off += v; | |
546 | } | |
547 | /* | |
548 | * Assign final values to symbols | |
549 | */ | |
550 | hdr.a_bss = dsize; | |
551 | freezesymtab(); /* this touches hdr.a_bss */ | |
552 | stabfix(); | |
553 | /* | |
554 | * Set up the relocation information "files" to | |
555 | * be zero; outrel takes care of the rest | |
556 | */ | |
557 | for (locindex = 0; locindex < NLOC + NLOC; locindex++){ | |
558 | rusefile[locindex] = (struct relbufdesc *)0; | |
559 | } | |
560 | } | |
561 | ||
562 | build_hdr() | |
563 | { | |
564 | /* | |
565 | * Except for the text and data relocation sizes, | |
566 | * calculate the final values for the header | |
567 | * | |
568 | * Write out the initial copy; we to come | |
569 | * back later and patch up a_trsize and a_drsize, | |
570 | * and overwrite this first version of the header. | |
571 | */ | |
572 | hdr.a_magic = MAGIC; | |
573 | hdr.a_text = tsize; | |
574 | hdr.a_data = dsize; | |
575 | hdr.a_bss -= dsize; | |
576 | hdr.a_syms = sizesymtab(); /* Does not include string pool length */ | |
577 | hdr.a_entry = 0; | |
578 | hdr.a_trsize = 0; | |
579 | hdr.a_drsize = 0; | |
580 | ||
581 | bwrite((char *)&hdr, sizeof(hdr), usefile[0]); | |
582 | } | |
583 | ||
584 | i_pass2() | |
585 | { | |
586 | if (useVM == 0) { | |
ec43bca4 RH |
587 | fclose(tokfile); |
588 | tokfile = fopen(tokfilename, "r"); | |
589 | if (tokfile==NULL) { | |
590 | yyerror("Bad pass 2 temporary file for reading %s", tokfilename); | |
59e14996 BJ |
591 | delexit(); |
592 | } | |
593 | } | |
ec43bca4 RH |
594 | fclose(strfile); |
595 | strfile = fopen(strfilename, "r"); | |
59e14996 BJ |
596 | } |
597 | ||
598 | pass2() | |
599 | { | |
600 | #ifdef DEBUG | |
601 | if (debug) | |
602 | printf("\n\n\n\t\tPASS 2\n\n\n\n"); | |
603 | #endif DEBUG | |
604 | passno = 2; | |
605 | lineno = 1; | |
606 | dotp = &usedot[0]; | |
607 | txtfil = usefile[0]; /* already opened (always!) */ | |
608 | relfil = 0; /* outrel takes care of the rest */ | |
609 | initoutrel(); | |
610 | ||
ec43bca4 | 611 | inittokfile(); |
59e14996 BJ |
612 | |
613 | yyparse(); | |
614 | ||
ec43bca4 | 615 | closetokfile(); |
59e14996 BJ |
616 | } |
617 | ||
618 | fillsegments() | |
619 | { | |
620 | int locindex; | |
621 | /* | |
7a5aec15 | 622 | * Round text and data segments to FW by appending zeros |
59e14996 BJ |
623 | */ |
624 | for (locindex = 0; locindex < NLOC + NLOC; locindex++) { | |
625 | if (usefile[locindex]) { | |
626 | txtfil = usefile[locindex]; | |
627 | dotp = &usedot[locindex]; | |
7a5aec15 | 628 | while (usedot[locindex].e_xvalue & FW) |
59e14996 BJ |
629 | outb(0); |
630 | } | |
631 | } | |
632 | } | |
633 | ||
634 | reloc_syms() | |
635 | { | |
636 | u_long closerelfil(); | |
637 | /* | |
638 | * Move the relocation information to a.out | |
639 | * a_out_off is the offset so far: | |
640 | * exec + text segments + data segments | |
641 | */ | |
642 | relocfile = (BFILE *)Calloc(1,sizeof(BFILE)); | |
643 | bopen(relocfile, a_out_off); | |
644 | a_out_off += closeoutrel(relocfile); | |
645 | ||
646 | hdr.a_trsize = trsize; | |
647 | hdr.a_drsize = drsize; | |
ed84d47b BJ |
648 | if (readonlydata) { |
649 | hdr.a_text += hdr.a_data; | |
650 | hdr.a_data = 0; | |
651 | hdr.a_trsize += hdr.a_drsize; | |
652 | hdr.a_drsize = 0; | |
653 | } | |
59e14996 BJ |
654 | /* |
655 | * Output the symbol table | |
656 | * and if FLEXNAMES is set, the string pool | |
ec43bca4 RH |
657 | * |
658 | * We must first rewind the string pool file to its beginning, | |
659 | * in case it was seek'ed into for fetching ascii and asciz | |
660 | * strings. | |
59e14996 | 661 | */ |
ec43bca4 | 662 | fseek(strfile, 0, 0); |
59e14996 BJ |
663 | symwrite(relocfile); |
664 | } | |
665 | ||
666 | fix_a_out() | |
667 | { | |
f70ab843 | 668 | if (lseek(a_out_file->_file, 0L, 0) < 0L) |
59e14996 BJ |
669 | yyerror("Reposition for header rewrite fails"); |
670 | if (write(a_out_file->_file, (char *)&hdr, sizeof (struct exec)) < 0) | |
671 | yyerror("Rewrite of header fails"); | |
672 | } | |
673 | ||
674 | delexit() | |
675 | { | |
676 | delete(); | |
677 | if (passno == 2){ | |
678 | unlink(outfile); | |
679 | } | |
680 | exit(1); | |
681 | } | |
682 | ||
683 | delete() | |
684 | { | |
ec43bca4 RH |
685 | if (useVM == 0 || tokfilename[0]) |
686 | unlink(tokfilename); | |
687 | if (strfilename[0]) | |
688 | unlink(strfilename); | |
59e14996 BJ |
689 | } |
690 | ||
691 | sawabort() | |
692 | { | |
693 | char *fillinbuffer(); | |
694 | while (fillinbuffer() != (char *)0) | |
695 | continue; | |
696 | delete(); | |
697 | exit(1); /*although the previous pass will also exit non zero*/ | |
698 | } | |
699 | ||
700 | panic(fmt, a1, a2, a3, a4) | |
701 | char *fmt; | |
702 | /*VARARGS 1*/ | |
703 | { | |
704 | yyerror("Assembler panic: bad internal data structure."); | |
705 | yyerror(fmt, a1, a2, a3, a4); | |
706 | delete(); | |
707 | abort(); | |
708 | } |