Commit | Line | Data |
---|---|---|
f70ab843 RH |
1 | /* |
2 | * Copyright (c) 1982 Regents of the University of California | |
3 | */ | |
4 | #ifndef lint | |
28219de3 | 5 | static char sccsid[] = "@(#)asmain.c 4.13 %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 | 16 | |
28219de3 | 17 | #define unix_lang_name "VAX/UNIX Assembler V%G% 4.13" |
59e14996 BJ |
18 | /* |
19 | * variables to manage reading the assembly source files | |
20 | */ | |
21 | char *dotsname; /*the current file name; managed by the parser*/ | |
22 | int lineno; /*current line number; managed by the parser*/ | |
100d3f3c | 23 | char **innames; /*names of the files being assembled*/ |
59e14996 BJ |
24 | int ninfiles; /*how many interesting files there are*/ |
25 | /* | |
26 | * Flags settable from the argv process argument list | |
27 | */ | |
28 | int silent = 0; /*don't complain about any errors*/ | |
29 | int savelabels = 0; /*write the labels to the a.out file*/ | |
30 | int d124 = 4; /*default allocate 4 bytes for unknown pointers*/ | |
31 | int anyerrs = 0; /*no errors yet*/ | |
f70ab843 | 32 | int anywarnings=0; /*no warnings yet*/ |
59e14996 BJ |
33 | int orgwarn = 0; /*Bad origins*/ |
34 | int passno = 1; /* current pass*/ | |
e5b9ebfb | 35 | int jxxxJUMP = 0; /* in jxxxes that branch too far, use jmp instead of brw */ |
ed84d47b | 36 | int readonlydata = 0; /* initialzed data -> text space */ |
59e14996 | 37 | |
f70ab843 RH |
38 | int nGHnumbers = 0; /* GH numbers used */ |
39 | int nGHopcodes = 0; /* GH opcodes used */ | |
40 | int nnewopcodes = 0; /* new opcodes used */ | |
41 | ||
59e14996 BJ |
42 | #ifdef DEBUG |
43 | int debug = 0; | |
44 | int toktrace = 0; | |
45 | #endif | |
46 | ||
e40ffc5c | 47 | int useVM = 0; |
59e14996 BJ |
48 | |
49 | char *endcore; /*where to get more symbol space*/ | |
50 | ||
51 | /* | |
52 | * Managers of the a.out file. | |
53 | */ | |
54 | struct exec hdr; | |
ed84d47b | 55 | #define MAGIC 0407 |
59e14996 BJ |
56 | u_long tsize; /* total text size */ |
57 | u_long dsize; /* total data size */ | |
58 | u_long datbase; /* base of the data segment */ | |
59 | u_long trsize; /* total text relocation size */ | |
60 | u_long drsize; /* total data relocation size */ | |
61 | ||
62 | /* | |
63 | * Information about the current segment is accumulated in | |
64 | * usedot; the most important information stored is the | |
65 | * accumulated size of each of the text and data segments | |
66 | * | |
67 | * dotp points to the correct usedot expression for the current segment | |
68 | */ | |
69 | struct exp usedot[NLOC+NLOC]; /* info about all segments */ | |
70 | struct exp *dotp; /* data/text location pointer */ | |
71 | /* | |
ec43bca4 | 72 | * The inter pass temporary token file is opened and closed by stdio, but |
59e14996 BJ |
73 | * is written to using direct read/write, as the temporary file |
74 | * is composed of buffers exactly BUFSIZ long. | |
75 | */ | |
ec43bca4 RH |
76 | FILE *tokfile; /* interpass communication file */ |
77 | char tokfilename[TNAMESIZE]; | |
78 | /* | |
79 | * The string file is the string table | |
80 | * cat'ed to the end of the built up a.out file | |
81 | */ | |
82 | FILE *strfile; /* interpass string file */ | |
83 | char strfilename[TNAMESIZE]; | |
84 | int strfilepos = 0; /* position within the string file */ | |
59e14996 BJ |
85 | /* |
86 | * a.out is created during the second pass. | |
87 | * It is opened by stdio, but is filled with the parallel | |
88 | * block I/O library | |
89 | */ | |
90 | char *outfile = "a.out"; | |
91 | FILE *a_out_file; | |
92 | off_t a_out_off; /* cumulative offsets for segments */ | |
93 | /* | |
94 | * The logical files containing the assembled data for each of | |
95 | * the text and data segments are | |
96 | * managed by the parallel block I/O library. | |
97 | * a.out is logically opened in many places at once to | |
98 | * receive the assembled data from the various segments as | |
99 | * it all trickles in, but is physically opened only once | |
100 | * to minimize file overhead. | |
101 | */ | |
102 | BFILE *usefile[NLOC+NLOC]; /* text/data files */ | |
103 | BFILE *txtfil; /* current text/data file */ | |
104 | /* | |
105 | * Relocation information is accumulated seperately for each | |
106 | * segment. This is required by the old loader (from BTL), | |
107 | * but not by the new loader (Bill Joy). | |
108 | * | |
109 | * However, the size of the relocation information can not be computed | |
110 | * during or after the 1st pass because the ''absoluteness' of values | |
111 | * is unknown until all locally declared symbols have been seen. | |
112 | * Thus, the size of the relocation information is only | |
113 | * known after the second pass is finished. | |
114 | * This obviates the use of the block I/O | |
115 | * library, which requires knowing the exact offsets in a.out. | |
116 | * | |
117 | * So, we save the relocation information internally (we don't | |
118 | * go to internal files to minimize overhead). | |
119 | * | |
120 | * Empirically, we studied 259 files composing the system, | |
121 | * two compilers and a compiler generator: (all of which have | |
122 | * fairly large source files) | |
123 | * | |
124 | * Number of files = 259 | |
125 | * Number of non zero text reloc files: 233 | |
126 | * Number of non zero data reloc files: 53 | |
127 | * Average text relocation = 889 | |
128 | * Average data relocation = 346 | |
129 | * Number of files > BUFSIZ text relocation = 71 | |
130 | * Number of files > BUFSIZ data relocation = 6 | |
131 | * | |
132 | * For compiled C code, there is usually one text segment and two | |
133 | * data segments; we see that allocating our own buffers and | |
134 | * doing our internal handling of relocation information will, | |
135 | * on the average, not use more memory than taken up by the buffers | |
136 | * allocated for doing file I/O in parallel to a number of file. | |
137 | * | |
138 | * If we are assembling with the -V option, we | |
139 | * use the left over token buffers from the 2nd pass, | |
140 | * otherwise, we create our own. | |
141 | * | |
142 | * When the 2nd pass is complete, closeoutrel flushes the token | |
143 | * buffers out to a BFILE. | |
144 | * | |
145 | * The internals to relbufdesc are known only in assyms.c | |
146 | * | |
147 | * outrel constructs the relocation information. | |
148 | * closeoutrel flushes the relocation information to relfil. | |
149 | */ | |
150 | struct relbufdesc *rusefile[NLOC+NLOC]; | |
151 | struct relbufdesc *relfil; /* un concatnated relocation info */ | |
152 | BFILE *relocfile; /* concatnated relocation info */ | |
153 | /* | |
154 | * Once the relocation information has been written, | |
155 | * we can write out the symbol table using the Block I/O | |
156 | * mechanisms, as we once again know the offsets into | |
157 | * the a.out file. | |
158 | * | |
159 | * We use relfil to output the symbol table information. | |
160 | */ | |
e40ffc5c | 161 | char *tmpdirprefix = "/tmp/"; |
59e14996 BJ |
162 | int delexit(); |
163 | ||
164 | main(argc, argv) | |
165 | int argc; | |
166 | char **argv; | |
167 | { | |
f70ab843 | 168 | char *sbrk(); |
59e14996 | 169 | |
ec43bca4 RH |
170 | tokfilename[0] = 0; |
171 | strfilename[0] = 0; | |
f70ab843 | 172 | endcore = sbrk(0); |
59e14996 BJ |
173 | |
174 | argprocess(argc, argv); /* process argument lists */ | |
175 | if (anyerrs) exit(1); | |
176 | ||
177 | initialize(); | |
178 | zeroorigins(); /* set origins to zero */ | |
179 | zerolocals(); /* fix local label counters */ | |
180 | ||
181 | i_pass1(); /* open temp files, etc */ | |
182 | pass1(); /* first pass through .s files */ | |
183 | testlocals(); /* check for undefined locals */ | |
184 | if (anyerrs) delexit(); | |
185 | ||
186 | pass1_5(); /* resolve jxxx */ | |
187 | if (anyerrs) delexit(); | |
188 | ||
189 | open_a_out(); /* open a.out */ | |
7a5aec15 | 190 | roundsegments(); /* round segments to FW */ |
59e14996 BJ |
191 | build_hdr(); /* build initial header, and output */ |
192 | ||
193 | i_pass2(); /* reopen temporary file, etc */ | |
194 | pass2(); /* second pass through the virtual .s */ | |
195 | if (anyerrs) delexit(); | |
196 | ||
7a5aec15 | 197 | fillsegments(); /* fill segments with 0 to FW */ |
59e14996 BJ |
198 | reloc_syms(); /* dump relocation and symbol table */ |
199 | ||
200 | delete(); /* remove tmp file */ | |
201 | bflush(); /* close off block I/O view of a.out */ | |
202 | fix_a_out(); /* add in text and data reloc counts */ | |
203 | ||
204 | if (anyerrs == 0 && orgwarn) | |
205 | yyerror("Caution: absolute origins.\n"); | |
f70ab843 RH |
206 | |
207 | if (nGHnumbers) | |
208 | yywarning("Caution: G or H format floating point numbers"); | |
209 | if (nGHopcodes) | |
210 | yywarning("Caution: G or H format floating point operators"); | |
211 | if (nnewopcodes) | |
212 | yywarning("Caution: New Opcodes"); | |
213 | if (nGHnumbers || nGHopcodes || nnewopcodes) | |
214 | yywarning("These are not defined for all implementations of the VAX architecture.\n"); | |
215 | ||
59e14996 | 216 | exit(anyerrs != 0); |
e40ffc5c | 217 | } |
59e14996 BJ |
218 | |
219 | argprocess(argc, argv) | |
220 | int argc; | |
221 | char *argv[]; | |
222 | { | |
223 | register char *cp; | |
224 | ||
225 | ninfiles = 0; | |
226 | silent = 0; | |
227 | #ifdef DEBUG | |
228 | debug = 0; | |
229 | #endif | |
100d3f3c | 230 | innames = (char **)ClearCalloc(argc+1, sizeof (innames[0])); |
59e14996 BJ |
231 | dotsname = "<argv error>"; |
232 | while (argc > 1) { | |
100d3f3c BJ |
233 | if (argv[1][0] != '-') |
234 | innames[ninfiles++] = argv[1]; | |
235 | else { | |
59e14996 BJ |
236 | cp = argv[1] + 1; |
237 | /* | |
238 | * We can throw away single minus signs, so | |
239 | * that make scripts for the PDP 11 assembler work | |
240 | * on this assembler too | |
241 | */ | |
242 | while (*cp){ | |
243 | switch(*cp++){ | |
244 | default: | |
245 | yyerror("Unknown flag: %c", *--cp); | |
246 | cp++; | |
247 | break; | |
26c6a2ae RH |
248 | case 'v': |
249 | selfwhat(stdout); | |
250 | exit(1); | |
59e14996 BJ |
251 | case 'd': |
252 | d124 = *cp++ - '0'; | |
253 | if ( (d124 != 1) && (d124 != 2) && | |
254 | (d124 != 4)){ | |
255 | yyerror("-d[124] only"); | |
256 | exit(1); | |
257 | } | |
258 | break; | |
259 | case 'o': | |
260 | if (argc < 3){ | |
261 | yyerror("-o what???"); | |
262 | exit(1); | |
263 | } | |
264 | outfile = argv[2]; | |
265 | bumpone: | |
266 | argc -= 2; | |
267 | argv += 2; | |
268 | goto nextarg; | |
269 | ||
270 | case 't': | |
271 | if (argc < 3){ | |
272 | yyerror("-t what???"); | |
273 | exit(1); | |
274 | } | |
275 | tmpdirprefix = argv[2]; | |
276 | goto bumpone; | |
277 | ||
278 | case 'V': | |
279 | useVM = 1; | |
280 | break; | |
281 | case 'W': | |
282 | silent = 1; | |
283 | break; | |
284 | case 'L': | |
285 | savelabels = 1; | |
286 | break; | |
e5b9ebfb RH |
287 | case 'J': |
288 | jxxxJUMP = 1; | |
289 | break; | |
59e14996 BJ |
290 | #ifdef DEBUG |
291 | case 'D': | |
292 | debug = 1; | |
293 | break; | |
294 | case 'T': | |
295 | toktrace = 1; | |
296 | break; | |
297 | #endif | |
ed84d47b BJ |
298 | case 'R': |
299 | readonlydata = 1; | |
300 | break; | |
59e14996 BJ |
301 | } /*end of the switch*/ |
302 | } /*end of pulling out all arguments*/ | |
303 | } /*end of a flag argument*/ | |
59e14996 BJ |
304 | --argc; ++argv; |
305 | nextarg:; | |
306 | } | |
100d3f3c | 307 | /* innames[ninfiles] = 0; */ |
59e14996 | 308 | } |
26c6a2ae RH |
309 | /* |
310 | * poke through the data space and find all sccs identifiers. | |
311 | * We assume: | |
312 | * a) that extern char **environ; is the first thing in the bss | |
313 | * segment (true, if one is using the new version of cmgt.crt0.c) | |
314 | * b) that the sccsid's have not been put into text space. | |
315 | */ | |
316 | selfwhat(place) | |
317 | FILE *place; | |
318 | { | |
319 | extern char **environ; | |
320 | register char *ub; | |
321 | register char *cp; | |
322 | register char *pat; | |
323 | char *sbrk(); | |
324 | ||
325 | for (cp = (char *)&environ, ub = sbrk(0); cp < ub; cp++){ | |
326 | if (cp[0] != '@') continue; | |
327 | if (cp[1] != '(') continue; | |
328 | if (cp[2] != '#') continue; | |
329 | if (cp[3] != ')') continue; | |
330 | fputc('\t', place); | |
331 | for (cp += 4; cp < ub; cp++){ | |
332 | if (*cp == 0) break; | |
333 | if (*cp == '>') break; | |
334 | if (*cp == '\n') break; | |
335 | fputc(*cp, place); | |
336 | } | |
337 | fputc('\n', place); | |
338 | } | |
339 | } | |
59e14996 BJ |
340 | |
341 | initialize() | |
342 | { | |
343 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) | |
344 | signal(SIGINT, delexit); | |
345 | /* | |
346 | * Install symbols in the table | |
347 | */ | |
348 | symtabinit(); | |
349 | syminstall(); | |
350 | /* | |
351 | * Build the expression parser accelerator token sets | |
352 | */ | |
353 | buildtokensets(); | |
354 | } | |
355 | ||
356 | zeroorigins() | |
357 | { | |
358 | register int locindex; | |
359 | /* | |
360 | * Mark usedot: the first NLOC slots are for named text segments, | |
361 | * the next for named data segments. | |
362 | */ | |
363 | for (locindex = 0; locindex < NLOC; locindex++){ | |
451260e7 RH |
364 | usedot[locindex].e_xtype = XTEXT; |
365 | usedot[NLOC + locindex].e_xtype = XDATA; | |
366 | usedot[locindex].e_xvalue = 0; | |
367 | usedot[NLOC + locindex].e_xvalue = 0; | |
59e14996 BJ |
368 | } |
369 | } | |
370 | ||
371 | zerolocals() | |
372 | { | |
373 | register int i; | |
374 | ||
375 | for (i = 0; i <= 9; i++) { | |
376 | lgensym[i] = 1; | |
377 | genref[i] = 0; | |
378 | } | |
379 | } | |
380 | ||
381 | i_pass1() | |
382 | { | |
ec43bca4 RH |
383 | FILE *tempopen(); |
384 | if (useVM == 0) | |
385 | tokfile = tempopen(tokfilename, "T"); | |
386 | strfile = tempopen(strfilename, "S"); | |
387 | /* | |
388 | * write out the string length. | |
389 | * This will be overwritten when the | |
390 | * strings are tacked onto the growing a.out file | |
391 | */ | |
392 | strfilepos = sizeof(int); | |
393 | fwrite(&strfilepos, sizeof(int), 1, strfile); | |
59e14996 | 394 | |
ec43bca4 | 395 | inittokfile(); |
e5b9ebfb | 396 | initijxxx(); |
59e14996 BJ |
397 | } |
398 | ||
ec43bca4 RH |
399 | FILE *tempopen(tname, part) |
400 | char *tname; | |
401 | char *part; | |
402 | { | |
403 | FILE *file; | |
404 | sprintf(tname, "%s%sas%s%05d", | |
405 | tmpdirprefix, | |
406 | (tmpdirprefix[strlen(tmpdirprefix)-1] != '/') ? "/" : 0, | |
407 | part, | |
408 | getpid()); | |
409 | file = fopen(tname, "w"); | |
410 | if (file == NULL) { | |
411 | yyerror("Bad pass 1 temporary file for writing %s", tname); | |
412 | delexit(); | |
413 | } | |
414 | return(file); | |
415 | } | |
416 | ||
59e14996 BJ |
417 | pass1() |
418 | { | |
419 | register int i; | |
420 | ||
421 | passno = 1; | |
422 | dotp = &usedot[0]; | |
423 | txtfil = (BFILE *)0; | |
424 | relfil = (struct relbufdesc *)0; | |
425 | ||
426 | if (ninfiles == 0){ /*take the input from stdin directly*/ | |
427 | lineno = 1; | |
428 | dotsname = "<stdin>"; | |
429 | ||
430 | yyparse(); | |
431 | } else { /*we have the names tanked*/ | |
432 | for (i = 0; i < ninfiles; i++){ | |
433 | new_dot_s(innames[i]); | |
434 | if (freopen(innames[i], "r", stdin) == NULL) { | |
435 | yyerror( "Can't open source file %s\n", | |
436 | innames[i]); | |
437 | exit(2); | |
438 | } | |
439 | /* stdio is NOT used to read the input characters */ | |
440 | /* we use read directly, into our own buffers */ | |
441 | yyparse(); | |
442 | } | |
443 | } | |
444 | ||
ec43bca4 | 445 | closetokfile(); /*kick out the last buffered intermediate text*/ |
59e14996 BJ |
446 | } |
447 | ||
448 | testlocals() | |
449 | { | |
450 | register int i; | |
451 | for (i = 0; i <= 9; i++) { | |
452 | if (genref[i]) | |
453 | yyerror("Reference to undefined local label %df", i); | |
454 | lgensym[i] = 1; | |
455 | genref[i] = 0; | |
456 | } | |
457 | } | |
458 | ||
459 | pass1_5() | |
460 | { | |
461 | sortsymtab(); | |
462 | #ifdef DEBUG | |
463 | if (debug) dumpsymtab(); | |
464 | #endif | |
465 | jxxxfix(); | |
466 | #ifdef DEBUG | |
467 | if (debug) dumpsymtab(); | |
468 | #endif | |
469 | } | |
470 | ||
471 | open_a_out() | |
472 | { | |
473 | /* | |
474 | * Open up the a.out file now, and get set to build | |
475 | * up offsets into it for all of the various text,data | |
476 | * text relocation and data relocation segments. | |
477 | */ | |
478 | a_out_file = fopen(outfile, "w"); | |
479 | if (a_out_file == NULL) { | |
480 | yyerror("Cannot create %s", outfile); | |
481 | delexit(); | |
482 | } | |
483 | biofd = a_out_file->_file; | |
484 | a_out_off = 0; | |
485 | } | |
486 | ||
487 | roundsegments() | |
488 | { | |
489 | register int locindex; | |
490 | register long v; | |
491 | /* | |
492 | * round and assign text segment origins | |
493 | * the exec header always goes in usefile[0] | |
494 | */ | |
495 | tsize = 0; | |
496 | for (locindex=0; locindex<NLOC; locindex++) { | |
7a5aec15 | 497 | v = round(usedot[locindex].e_xvalue, FW); |
451260e7 | 498 | usedot[locindex].e_xvalue = tsize; |
59e14996 BJ |
499 | if ((locindex == 0) || (v != 0) ){ |
500 | usefile[locindex] = (BFILE *)Calloc(1, sizeof(BFILE)); | |
501 | bopen(usefile[locindex], a_out_off); | |
502 | if (locindex == 0) | |
503 | a_out_off = sizeof (struct exec); | |
504 | } else { | |
505 | usefile[locindex] = (BFILE *)-1; | |
506 | } | |
507 | tsize += v; | |
508 | a_out_off += v; | |
509 | } | |
510 | /* | |
511 | * Round and assign data segment origins. | |
512 | */ | |
7a5aec15 | 513 | datbase = round(tsize, FW); |
59e14996 | 514 | for (locindex=0; locindex<NLOC; locindex++) { |
7a5aec15 | 515 | v = round(usedot[NLOC+locindex].e_xvalue, FW); |
451260e7 | 516 | usedot[NLOC+locindex].e_xvalue = datbase + dsize; |
59e14996 BJ |
517 | if (v != 0){ |
518 | usefile[NLOC + locindex] = (BFILE *)Calloc(1,sizeof(BFILE)); | |
519 | bopen(usefile[NLOC + locindex], a_out_off); | |
520 | } else { | |
521 | usefile[NLOC + locindex] = (BFILE *)-1; | |
522 | } | |
523 | dsize += v; | |
524 | a_out_off += v; | |
525 | } | |
526 | /* | |
527 | * Assign final values to symbols | |
528 | */ | |
529 | hdr.a_bss = dsize; | |
530 | freezesymtab(); /* this touches hdr.a_bss */ | |
531 | stabfix(); | |
532 | /* | |
533 | * Set up the relocation information "files" to | |
534 | * be zero; outrel takes care of the rest | |
535 | */ | |
536 | for (locindex = 0; locindex < NLOC + NLOC; locindex++){ | |
537 | rusefile[locindex] = (struct relbufdesc *)0; | |
538 | } | |
539 | } | |
540 | ||
541 | build_hdr() | |
542 | { | |
543 | /* | |
544 | * Except for the text and data relocation sizes, | |
545 | * calculate the final values for the header | |
546 | * | |
547 | * Write out the initial copy; we to come | |
548 | * back later and patch up a_trsize and a_drsize, | |
549 | * and overwrite this first version of the header. | |
550 | */ | |
551 | hdr.a_magic = MAGIC; | |
552 | hdr.a_text = tsize; | |
553 | hdr.a_data = dsize; | |
554 | hdr.a_bss -= dsize; | |
555 | hdr.a_syms = sizesymtab(); /* Does not include string pool length */ | |
556 | hdr.a_entry = 0; | |
557 | hdr.a_trsize = 0; | |
558 | hdr.a_drsize = 0; | |
559 | ||
560 | bwrite((char *)&hdr, sizeof(hdr), usefile[0]); | |
561 | } | |
562 | ||
563 | i_pass2() | |
564 | { | |
565 | if (useVM == 0) { | |
ec43bca4 RH |
566 | fclose(tokfile); |
567 | tokfile = fopen(tokfilename, "r"); | |
568 | if (tokfile==NULL) { | |
569 | yyerror("Bad pass 2 temporary file for reading %s", tokfilename); | |
59e14996 BJ |
570 | delexit(); |
571 | } | |
572 | } | |
ec43bca4 RH |
573 | fclose(strfile); |
574 | strfile = fopen(strfilename, "r"); | |
59e14996 BJ |
575 | } |
576 | ||
577 | pass2() | |
578 | { | |
579 | #ifdef DEBUG | |
580 | if (debug) | |
581 | printf("\n\n\n\t\tPASS 2\n\n\n\n"); | |
582 | #endif DEBUG | |
583 | passno = 2; | |
584 | lineno = 1; | |
585 | dotp = &usedot[0]; | |
586 | txtfil = usefile[0]; /* already opened (always!) */ | |
587 | relfil = 0; /* outrel takes care of the rest */ | |
588 | initoutrel(); | |
589 | ||
ec43bca4 | 590 | inittokfile(); |
59e14996 BJ |
591 | |
592 | yyparse(); | |
593 | ||
ec43bca4 | 594 | closetokfile(); |
59e14996 BJ |
595 | } |
596 | ||
597 | fillsegments() | |
598 | { | |
599 | int locindex; | |
600 | /* | |
7a5aec15 | 601 | * Round text and data segments to FW by appending zeros |
59e14996 BJ |
602 | */ |
603 | for (locindex = 0; locindex < NLOC + NLOC; locindex++) { | |
604 | if (usefile[locindex]) { | |
605 | txtfil = usefile[locindex]; | |
606 | dotp = &usedot[locindex]; | |
7a5aec15 | 607 | while (usedot[locindex].e_xvalue & FW) |
59e14996 BJ |
608 | outb(0); |
609 | } | |
610 | } | |
611 | } | |
612 | ||
613 | reloc_syms() | |
614 | { | |
615 | u_long closerelfil(); | |
616 | /* | |
617 | * Move the relocation information to a.out | |
618 | * a_out_off is the offset so far: | |
619 | * exec + text segments + data segments | |
620 | */ | |
621 | relocfile = (BFILE *)Calloc(1,sizeof(BFILE)); | |
622 | bopen(relocfile, a_out_off); | |
623 | a_out_off += closeoutrel(relocfile); | |
624 | ||
625 | hdr.a_trsize = trsize; | |
626 | hdr.a_drsize = drsize; | |
ed84d47b BJ |
627 | if (readonlydata) { |
628 | hdr.a_text += hdr.a_data; | |
629 | hdr.a_data = 0; | |
630 | hdr.a_trsize += hdr.a_drsize; | |
631 | hdr.a_drsize = 0; | |
632 | } | |
59e14996 | 633 | /* |
28219de3 | 634 | * Output the symbol table and the string pool |
ec43bca4 RH |
635 | * |
636 | * We must first rewind the string pool file to its beginning, | |
637 | * in case it was seek'ed into for fetching ascii and asciz | |
638 | * strings. | |
59e14996 | 639 | */ |
ec43bca4 | 640 | fseek(strfile, 0, 0); |
59e14996 BJ |
641 | symwrite(relocfile); |
642 | } | |
643 | ||
644 | fix_a_out() | |
645 | { | |
f70ab843 | 646 | if (lseek(a_out_file->_file, 0L, 0) < 0L) |
59e14996 BJ |
647 | yyerror("Reposition for header rewrite fails"); |
648 | if (write(a_out_file->_file, (char *)&hdr, sizeof (struct exec)) < 0) | |
649 | yyerror("Rewrite of header fails"); | |
650 | } | |
651 | ||
652 | delexit() | |
653 | { | |
654 | delete(); | |
655 | if (passno == 2){ | |
656 | unlink(outfile); | |
657 | } | |
658 | exit(1); | |
659 | } | |
660 | ||
661 | delete() | |
662 | { | |
ec43bca4 RH |
663 | if (useVM == 0 || tokfilename[0]) |
664 | unlink(tokfilename); | |
665 | if (strfilename[0]) | |
666 | unlink(strfilename); | |
59e14996 BJ |
667 | } |
668 | ||
669 | sawabort() | |
670 | { | |
671 | char *fillinbuffer(); | |
672 | while (fillinbuffer() != (char *)0) | |
673 | continue; | |
674 | delete(); | |
675 | exit(1); /*although the previous pass will also exit non zero*/ | |
676 | } | |
677 | ||
678 | panic(fmt, a1, a2, a3, a4) | |
679 | char *fmt; | |
680 | /*VARARGS 1*/ | |
681 | { | |
682 | yyerror("Assembler panic: bad internal data structure."); | |
683 | yyerror(fmt, a1, a2, a3, a4); | |
684 | delete(); | |
685 | abort(); | |
686 | } |