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[] = "@(#)assyms.c 4.11 %G%"; |
f70ab843 RH |
6 | #endif not lint |
7 | ||
5178805d BJ |
8 | #include <stdio.h> |
9 | #include <ctype.h> | |
5178805d BJ |
10 | #include "as.h" |
11 | #include "asscan.h" | |
12 | #include "assyms.h" | |
13 | ||
14 | /* | |
15 | * Managers for chunks of symbols allocated from calloc() | |
16 | * We maintain a linked list of such chunks. | |
17 | * | |
18 | */ | |
19 | struct allocbox *allochead; /*head of chunk list*/ | |
20 | struct allocbox *alloctail; /*tail*/ | |
21 | struct allocbox *newbox; /*for creating a new chunk*/ | |
22 | struct symtab *nextsym; /*next symbol free*/ | |
23 | int symsleft; /*slots left in current chunk*/ | |
24 | ||
25 | struct symtab **symptrs; | |
26 | struct symtab **symdelim[NLOC + NLOC +1]; | |
27 | struct symtab **symptrub; | |
28 | /* | |
29 | * Managers for the dynamically extendable hash table | |
30 | */ | |
31 | struct hashdallop *htab; | |
32 | ||
f70ab843 | 33 | Iptr *itab[NINST]; /*maps opcodes to instructions*/ |
5178805d BJ |
34 | /* |
35 | * Counts what went into the symbol table, so that the | |
36 | * size of the symbol table can be computed. | |
37 | */ | |
38 | int nsyms; /* total number in the symbol table */ | |
39 | int njxxx; /* number of jxxx entrys */ | |
40 | int nforgotten; /* number of symbols erroneously entered */ | |
41 | int nlabels; /* number of label entries */ | |
5178805d BJ |
42 | |
43 | /* | |
44 | * Managers of the symbol literal storage. | |
5178805d | 45 | */ |
5178805d | 46 | struct strpool *strplhead = 0; |
5178805d BJ |
47 | |
48 | symtabinit() | |
49 | { | |
50 | allochead = 0; | |
51 | alloctail = 0; | |
52 | nextsym = 0; | |
53 | symsleft = 0; | |
5178805d | 54 | strpoolalloc(); /* get the first strpool storage area */ |
5178805d BJ |
55 | htab = 0; |
56 | htaballoc(); /* get the first part of the hash table */ | |
57 | } | |
58 | ||
59 | /* | |
60 | * Install all known instructions in the symbol table | |
61 | */ | |
62 | syminstall() | |
63 | { | |
f70ab843 | 64 | register Iptr ip; |
5178805d BJ |
65 | register struct symtab **hp; |
66 | register char *p1, *p2; | |
f70ab843 RH |
67 | register int i; |
68 | ||
69 | for (i = 0; i < NINST; i++) | |
70 | itab[i] = (Iptr*)BADPOINT; | |
5178805d | 71 | |
ec43bca4 RH |
72 | for (ip = (Iptr)instab; FETCHNAME(ip)[0]; ip++) { |
73 | p1 = FETCHNAME(ip); | |
5178805d BJ |
74 | p2 = yytext; |
75 | while (*p2++ = *p1++); | |
76 | hp = lookup(0); /* 0 => don't install this*/ | |
77 | if (*hp==NULL) { | |
78 | *hp = (struct symtab *)ip; | |
451260e7 RH |
79 | if ( (ip->s_tag!=INSTn) |
80 | && (ip->s_tag!=INST0) | |
81 | && (ip->s_tag!=0)) | |
5178805d | 82 | continue; /* was pseudo-op */ |
f70ab843 RH |
83 | if (itab[ip->i_eopcode] == (Iptr*)BADPOINT){ |
84 | itab[ip->i_eopcode] = | |
85 | (Iptr*)ClearCalloc(256, sizeof(Iptr)); | |
86 | for (i = 0; i < 256; i++) | |
87 | itab[ip->i_eopcode][i] = | |
88 | (Iptr)BADPOINT; | |
89 | } | |
90 | itab[ip->i_eopcode][ip->i_popcode] = ip; | |
5178805d BJ |
91 | } |
92 | } | |
93 | } /*end of syminstall*/ | |
94 | ||
95 | ||
96 | /* | |
97 | * Assign final values to symbols, | |
98 | * and overwrite the index field with its relative position in | |
99 | * the symbol table we give to the loader. | |
100 | */ | |
101 | extern struct exec hdr; | |
102 | ||
103 | freezesymtab() | |
104 | { | |
105 | register struct symtab *sp; | |
106 | long bs; | |
107 | register int relpos = 0; | |
108 | register struct symtab *ubsp; | |
109 | register struct allocbox *allocwalk; | |
110 | ||
111 | DECLITERATE(allocwalk, sp, ubsp) | |
112 | { | |
451260e7 | 113 | if (sp->s_tag >= IGNOREBOUND) |
5178805d BJ |
114 | continue; /*totally ignore jxxx entries */ |
115 | /* | |
116 | * Ignore stabs, but give them a symbol table index | |
117 | */ | |
451260e7 | 118 | if (sp->s_type & STABFLAG) |
5178805d | 119 | goto assignindex; |
451260e7 RH |
120 | if ((sp->s_type&XTYPE)==XUNDEF) |
121 | sp->s_type = XXTRN+XUNDEF; | |
122 | else if ((sp->s_type&XTYPE)==XDATA) | |
123 | sp->s_value += usedot[sp->s_index].e_xvalue; | |
124 | else if ((sp->s_type&XTYPE)==XTEXT) | |
125 | sp->s_value += usedot[sp->s_index].e_xvalue; | |
126 | else if ((sp->s_type&XTYPE)==XBSS) { | |
127 | bs = sp->s_value; | |
128 | sp->s_value = hdr.a_bss + datbase; | |
5178805d BJ |
129 | hdr.a_bss += bs; |
130 | } | |
131 | assignindex: | |
ec43bca4 | 132 | if ( (FETCHNAME(sp)[0] != 'L') |
451260e7 | 133 | || (sp->s_tag != LABELID) |
5178805d BJ |
134 | || savelabels |
135 | ) /*then, we will write it later on*/ | |
451260e7 | 136 | sp->s_index = relpos++; |
5178805d BJ |
137 | } |
138 | } | |
139 | ||
140 | ||
141 | ||
142 | /* | |
143 | * For all of the stabs that had their final value undefined during pass 1 | |
144 | * and during pass 2 assign a final value. | |
145 | * We have already given stab entrys a initial approximation | |
146 | * when we constsructed the sorted symbol table. | |
147 | * Iteration order doesn't matter. | |
148 | */ | |
ac73cea0 AF |
149 | |
150 | stabfix() | |
151 | { | |
5178805d BJ |
152 | register struct symtab *sp, **cosp; |
153 | register struct symtab *p; | |
154 | ||
155 | SYMITERATE(cosp, sp){ | |
451260e7 RH |
156 | if(sp->s_ptype && (sp->s_type & STABFLAG)) { |
157 | p = sp->s_dest; | |
ac73cea0 AF |
158 | /* |
159 | * STABFLOATING indicates that the offset has been saved in s_desc, s_other | |
160 | */ | |
161 | if(sp->s_tag == STABFLOATING) { | |
162 | sp->s_value = ( ( ((unsigned char) sp->s_other) << 16) | ( (unsigned short) sp->s_desc ) ); | |
163 | sp->s_value = sp->s_value + p->s_value; | |
164 | } | |
165 | else sp->s_value = p->s_value; | |
451260e7 RH |
166 | sp->s_index = p->s_index; |
167 | sp->s_type = p->s_type; | |
ac73cea0 AF |
168 | |
169 | ||
5178805d BJ |
170 | } |
171 | } | |
172 | } | |
173 | ||
174 | char *Calloc(number, size) | |
175 | int number, size; | |
176 | { | |
177 | register char *newstuff; | |
f70ab843 RH |
178 | char *sbrk(); |
179 | newstuff = sbrk(number*size); | |
5178805d BJ |
180 | if ((int)newstuff == -1){ |
181 | yyerror("Ran out of Memory"); | |
182 | delexit(); | |
183 | } | |
184 | return(newstuff); | |
185 | } | |
186 | ||
187 | char *ClearCalloc(number, size) | |
188 | int number, size; | |
189 | { | |
190 | register char *newstuff; /* r11 */ | |
191 | register int length = number * size; /* r10 */ | |
f70ab843 RH |
192 | #ifdef lint |
193 | length = length; | |
194 | #endif length | |
5178805d BJ |
195 | newstuff = Calloc(number, size); |
196 | asm("movc5 $0, (r0), $0, r10, (r11)"); | |
197 | return(newstuff); | |
198 | } | |
199 | ||
200 | struct symtab *symalloc() | |
201 | { | |
202 | if (symsleft == 0){ | |
203 | newbox = (struct allocbox *)ClearCalloc(1,ALLOCQTY); | |
204 | symsleft = SYMDALLOP; | |
205 | nextsym = &newbox->symslots[0]; | |
5178805d BJ |
206 | if (alloctail == 0){ |
207 | allochead = alloctail = newbox; | |
208 | } else { | |
209 | alloctail->nextalloc = newbox; | |
210 | alloctail = newbox; | |
211 | } | |
212 | } | |
213 | --symsleft; | |
214 | ++nsyms; | |
5178805d BJ |
215 | return(nextsym++); |
216 | } | |
217 | ||
5178805d BJ |
218 | strpoolalloc() |
219 | { | |
220 | register struct strpool *new; | |
221 | ||
222 | new = (struct strpool *)Calloc(1, sizeof (struct strpool)); | |
223 | new->str_nalloc = 0; | |
224 | new->str_next = strplhead; | |
225 | strplhead = new; | |
226 | } | |
5178805d BJ |
227 | |
228 | symcmp(Pptr, Qptr) | |
229 | struct symtab **Pptr, **Qptr; | |
230 | { | |
231 | register struct symtab *p = *Pptr; | |
232 | register struct symtab *q = *Qptr; | |
451260e7 | 233 | if (p->s_index < q->s_index) |
5178805d | 234 | return(-1); |
451260e7 | 235 | if (p->s_index > q->s_index) |
5178805d | 236 | return(1); |
451260e7 | 237 | if (p->s_value < q->s_value) |
5178805d | 238 | return(-1); |
451260e7 | 239 | if (p->s_value > q->s_value) |
5178805d BJ |
240 | return(1); |
241 | /* | |
242 | * Force jxxx entries to virtually preceed labels defined | |
243 | * to follow the jxxxx instruction, so that bumping the | |
244 | * jxxx instruction correctly fixes up the following labels | |
245 | */ | |
451260e7 | 246 | if (p->s_tag >= IGNOREBOUND) /*p points to a jxxx*/ |
5178805d | 247 | return(-1); |
451260e7 | 248 | if (q->s_tag >= IGNOREBOUND) |
5178805d BJ |
249 | return(1); |
250 | /* | |
251 | * both are now just plain labels; the relative order doesn't | |
252 | * matter. Both can't be jxxxes, as they would have different | |
253 | * values. | |
254 | */ | |
255 | return(0); | |
256 | } /*end of symcmp*/ | |
257 | ||
258 | /* | |
259 | * We construct the auxiliary table of pointers, symptrs and | |
260 | * symdelim | |
261 | * We also assign preliminary values to stab entries that did not yet | |
262 | * have an absolute value (because they initially referred to | |
263 | * forward references). We don't worry about .stabds, as they | |
264 | * already have an estimated final value | |
265 | */ | |
266 | ||
267 | sortsymtab() | |
268 | { | |
269 | register struct symtab *sp; | |
270 | register struct symtab **cowalk; | |
271 | register struct allocbox *allocwalk; | |
272 | struct symtab *ubsp; | |
273 | int segno; | |
274 | int slotno; | |
275 | int symsin; /*number put into symptrs*/ | |
276 | ||
277 | symptrs = (struct symtab **)Calloc(nsyms + 2, sizeof *symptrs); | |
278 | /* | |
279 | * Allocate one word at the beginning of the symptr array | |
280 | * so that backwards scans through the symptr array will | |
281 | * work correctly while scanning through the zeroth segment | |
282 | */ | |
283 | *symptrs++ = 0; | |
284 | cowalk = symptrs; | |
285 | symsin = 0; | |
286 | DECLITERATE(allocwalk, sp, ubsp) { | |
451260e7 RH |
287 | if (sp->s_ptype && (sp->s_type &STABFLAG)){ |
288 | sp->s_value = sp->s_dest->s_value; | |
289 | sp->s_index = sp->s_dest->s_index; | |
5178805d BJ |
290 | } |
291 | if (symsin >= nsyms) | |
292 | yyerror("INTERNAL ERROR: overfilled symbol table indirection table"); | |
293 | *cowalk++ = sp; | |
294 | symsin++; | |
295 | } | |
296 | if (symsin != nsyms) | |
297 | yyerror("INTERNAL ERROR: installed %d syms, should have installed %d", | |
298 | symsin, nsyms); | |
299 | symptrub = &symptrs[nsyms ]; | |
300 | qsort(symptrs, nsyms, sizeof *symptrs, symcmp); | |
301 | symdelim[0] = symptrs; | |
302 | for (cowalk = symptrs, sp = *cowalk, segno = 0, slotno = 1; | |
303 | segno < NLOC + NLOC; | |
304 | segno++, slotno++){ | |
451260e7 | 305 | for (; sp && sp->s_index == segno; sp = *++cowalk); |
5178805d BJ |
306 | symdelim[slotno] = cowalk; /*forms the ub delimeter*/ |
307 | } | |
308 | } /*end of sortsymtab*/ | |
309 | ||
310 | #ifdef DEBUG | |
311 | dumpsymtab() | |
312 | { | |
313 | register int segno; | |
314 | register struct symtab *sp, **cosp, *ub; | |
315 | char *tagstring(); | |
316 | ||
317 | printf("Symbol Table dump:\n"); | |
318 | for (segno = 0; segno < NLOC + NLOC; segno++){ | |
319 | printf("Segment number: %d\n", segno); | |
320 | SEGITERATE(segno, 0, 0, cosp, sp, ub, ++){ | |
321 | #ifdef FLEXNAMES | |
322 | printf("\tSeg: %d \"%s\" value: %d index: %d tag %s\n", | |
ec43bca4 | 323 | segno, FETCHNAME(sp), |
451260e7 RH |
324 | sp->s_value, sp->s_index, |
325 | tagstring(sp->s_tag)); | |
5178805d BJ |
326 | #else not FLEXNAMES |
327 | printf("\tSeg: %d \"%*.*s\" value: %d index: %d tag %s\n", | |
ec43bca4 | 328 | segno, NCPName, NCPName, FETCHNAME(sp), |
451260e7 RH |
329 | sp->s_value, sp->s_index, |
330 | tagstring(sp->s_tag)); | |
5178805d BJ |
331 | #endif not FLEXNAMES |
332 | printf("\t\ttype: %d jxbump %d jxfear: %d\n", | |
451260e7 | 333 | sp->s_type, sp->s_jxbump, sp->s_jxfear); |
5178805d BJ |
334 | } |
335 | printf("\n\n"); | |
336 | } | |
337 | } | |
338 | ||
339 | static char tagbuff[4]; | |
340 | ||
341 | char *tagstring(tag) | |
342 | unsigned char tag; | |
343 | { | |
344 | switch(tag){ | |
345 | case JXACTIVE: return("active"); | |
346 | case JXNOTYET: return("notyet"); | |
347 | case JXALIGN: return("align"); | |
348 | case JXQUESTIONABLE: return("jxquestionable"); | |
349 | case JXINACTIVE: return("inactive"); | |
350 | case JXTUNNEL: return("tunnel"); | |
351 | case OBSOLETE: return("obsolete"); | |
352 | case IGNOREBOUND: return("ignorebound"); | |
353 | case STABFLOATING: return("stabfloating"); | |
354 | case STABFIXED: return("stabfixed"); | |
355 | case LABELID: return("labelid"); | |
356 | case OKTOBUMP: return("oktobump"); | |
357 | case ISET: return("iset"); | |
358 | case ILSYM: return("ilsym"); | |
359 | default: sprintf(tagbuff,"%d", tag); | |
360 | return(tagbuff); | |
361 | } | |
362 | } | |
363 | #endif DEBUG | |
364 | ||
365 | htaballoc() | |
366 | { | |
367 | register struct hashdallop *new; | |
368 | new = (struct hashdallop *)ClearCalloc(1, sizeof (struct hashdallop)); | |
369 | if (htab == 0) | |
370 | htab = new; | |
371 | else { /* add AFTER the 1st slot */ | |
372 | new->h_next = htab->h_next; | |
373 | htab->h_next = new; | |
374 | } | |
375 | } | |
376 | ||
377 | #define HASHCLOGGED (NHASH / 2) | |
378 | ||
379 | /* | |
380 | * Lookup a symbol stored in extern yytext. | |
381 | * All strings passed in via extern yytext had better have | |
382 | * a trailing null. Strings are placed in yytext for hashing by | |
383 | * syminstall() and by yylex(); | |
384 | * | |
385 | * We take pains to avoid function calls; this functdion | |
386 | * is called quite frequently, and the calls overhead | |
387 | * in the vax contributes significantly to the overall | |
388 | * execution speed of as. | |
389 | */ | |
390 | struct symtab **lookup(instflg) | |
391 | int instflg; /* 0: don't install */ | |
392 | { | |
393 | static int initialprobe; | |
394 | register struct symtab **hp; | |
395 | register char *from; | |
396 | register char *to; | |
397 | register int len; | |
398 | register int nprobes; | |
ec43bca4 RH |
399 | static struct hashdallop *hdallop; |
400 | static struct symtab **emptyslot; | |
401 | static struct hashdallop *emptyhd; | |
402 | static struct symtab **hp_ub; | |
403 | static struct strdesc strdp; | |
5178805d BJ |
404 | |
405 | emptyslot = 0; | |
406 | for (nprobes = 0, from = yytext; | |
407 | *from; | |
408 | nprobes <<= 2, nprobes += *from++) | |
409 | continue; | |
410 | nprobes += from[-1] << 5; | |
411 | nprobes %= NHASH; | |
412 | if (nprobes < 0) | |
413 | nprobes += NHASH; | |
414 | ||
415 | initialprobe = nprobes; | |
416 | for (hdallop = htab; hdallop != 0; hdallop = hdallop->h_next){ | |
417 | for (hp = &(hdallop->h_htab[initialprobe]), | |
418 | nprobes = 1, | |
419 | hp_ub = &(hdallop->h_htab[NHASH]); | |
420 | (*hp) && (nprobes < NHASH); | |
421 | hp += nprobes, | |
422 | hp -= (hp >= hp_ub) ? NHASH:0, | |
423 | nprobes += 2) | |
424 | { | |
425 | from = yytext; | |
ec43bca4 | 426 | to = FETCHNAME(*hp); |
5178805d | 427 | #ifndef FLEXNAMES |
abcba8d5 | 428 | for (len = 0; (len<NCPName) && *from; len++) |
5178805d BJ |
429 | if (*from++ != *to++) |
430 | goto nextprobe; | |
abcba8d5 | 431 | if (len >= NCPName) /*both are maximal length*/ |
5178805d BJ |
432 | return(hp); |
433 | if (*to == 0) /*assert *from == 0*/ | |
434 | return(hp); | |
435 | #else FLEXNAMES | |
436 | while (*from && *to) | |
437 | if (*from++ != *to++) | |
438 | goto nextprobe; | |
439 | if (*to == *from) /*assert both are == 0*/ | |
440 | return(hp); | |
441 | #endif FLEXNAMES | |
442 | ||
443 | nextprobe: ; | |
444 | } | |
445 | if (*hp == 0 && emptyslot == 0 && | |
446 | hdallop->h_nused < HASHCLOGGED) { | |
447 | emptyslot = hp; | |
448 | emptyhd = hdallop; | |
449 | } | |
450 | } | |
451 | if (emptyslot == 0) { | |
452 | htaballoc(); | |
453 | hdallop = htab->h_next; /* aren't we smart! */ | |
454 | hp = &hdallop->h_htab[initialprobe]; | |
455 | } else { | |
456 | hdallop = emptyhd; | |
457 | hp = emptyslot; | |
458 | } | |
459 | if (instflg) { | |
460 | *hp = symalloc(); | |
461 | hdallop->h_nused++; | |
462 | #ifndef FLEXNAMES | |
ec43bca4 | 463 | strncpy(FETCHNAME(*hp), yytext, NCPName); |
5178805d | 464 | #else FLEXNAMES |
ad67d5e5 | 465 | for (from = yytext, len = 0; *from++; len++) |
5178805d | 466 | continue; |
ad67d5e5 | 467 | /* |
ec43bca4 RH |
468 | * save string and trailing null, both |
469 | * internally, and in the string temporary file | |
ad67d5e5 | 470 | */ |
ec43bca4 RH |
471 | strdp.sd_stroff = strfilepos; |
472 | strdp.sd_place = STR_BOTH; | |
473 | strdp.sd_strlen = len + 1; /* length and null */ | |
474 | fputs(yytext, strfile); /* string */ | |
475 | putc(0, strfile); /* null */ | |
476 | strfilepos += strdp.sd_strlen; | |
477 | (*hp)->s_name = (char *)savestr(yytext, &strdp); | |
5178805d BJ |
478 | #endif FLEXNAMES |
479 | } | |
480 | return(hp); | |
481 | } /*end of lookup*/ | |
ad67d5e5 | 482 | /* |
ec43bca4 | 483 | * save a string str, descriptor strdp, in the string pool |
ad67d5e5 | 484 | */ |
ec43bca4 | 485 | struct strdesc *savestr(str, strdp) |
ad67d5e5 | 486 | char *str; |
ec43bca4 | 487 | struct strdesc *strdp; |
5178805d | 488 | { |
ec43bca4 RH |
489 | reg struct strdesc *res; |
490 | int tlen; | |
491 | ||
492 | tlen = sizeof(struct strdesc) - sizeof(res->sd_string); | |
493 | if (strdp->sd_place & STR_FILE) | |
494 | tlen += strdp->sd_strlen; | |
5178805d | 495 | |
ec43bca4 | 496 | if (tlen >= (STRPOOLDALLOP - strplhead->str_nalloc)) |
5178805d | 497 | strpoolalloc(); |
ec43bca4 RH |
498 | res = (struct strdesc *)(strplhead->str_names + strplhead->str_nalloc); |
499 | res[0] = *strdp; | |
500 | if (strdp->sd_place & STR_FILE) | |
501 | movestr(res[0].sd_string, str, strdp->sd_strlen); | |
502 | strplhead->str_nalloc += tlen; | |
ad67d5e5 | 503 | return(res); |
5178805d BJ |
504 | } |
505 | ||
5178805d BJ |
506 | /* |
507 | * The relocation information is saved internally in an array of | |
508 | * lists of relocation buffers. The relocation buffers are | |
509 | * exactly the same size as a token buffer; if we use VM for the | |
510 | * temporary file we reclaim this storage, otherwise we create | |
511 | * them by mallocing. | |
512 | */ | |
513 | #define RELBUFLG TOKBUFLG | |
514 | #define NRELOC ((TOKBUFLG - \ | |
515 | (sizeof (int) + sizeof (struct relbufdesc *)) \ | |
516 | ) / (sizeof (struct relocation_info))) | |
517 | ||
518 | struct relbufdesc{ | |
519 | int rel_count; | |
520 | struct relbufdesc *rel_next; | |
521 | struct relocation_info rel_reloc[NRELOC]; | |
522 | }; | |
523 | extern struct relbufdesc *tok_free; | |
524 | #define rel_free tok_free | |
525 | static struct relbufdesc *rel_temp; | |
451260e7 RH |
526 | struct relocation_info r_can_1PC; |
527 | struct relocation_info r_can_0PC; | |
5178805d BJ |
528 | |
529 | initoutrel() | |
530 | { | |
451260e7 RH |
531 | r_can_0PC.r_address = 0; |
532 | r_can_0PC.r_symbolnum = 0; | |
533 | r_can_0PC.r_pcrel = 0; | |
534 | r_can_0PC.r_length = 0; | |
535 | r_can_0PC.r_extern = 0; | |
536 | ||
537 | r_can_1PC = r_can_0PC; | |
5178805d BJ |
538 | r_can_1PC.r_pcrel = 1; |
539 | } | |
540 | ||
5b3c350a RH |
541 | outrel(xp, reloc_how) |
542 | register struct exp *xp; | |
f70ab843 | 543 | int reloc_how; /* TYPB..TYPH + (possibly)RELOC_PCREL */ |
5178805d | 544 | { |
5b3c350a RH |
545 | struct relocation_info reloc; |
546 | register int x_type_mask; | |
ad67d5e5 | 547 | int pcrel; |
5178805d | 548 | |
5b3c350a RH |
549 | x_type_mask = xp->e_xtype & ~XFORW; |
550 | pcrel = reloc_how & RELOC_PCREL; | |
551 | reloc_how &= ~RELOC_PCREL; | |
552 | ||
5178805d BJ |
553 | if (bitoff&07) |
554 | yyerror("Padding error"); | |
5b3c350a | 555 | if (x_type_mask == XUNDEF) |
5178805d BJ |
556 | yyerror("Undefined reference"); |
557 | ||
5b3c350a RH |
558 | if ( (x_type_mask != XABS) || pcrel ) { |
559 | if (ty_NORELOC[reloc_how]) | |
f70ab843 | 560 | yyerror("Illegal Relocation of floating or large int number."); |
5b3c350a | 561 | reloc = pcrel ? r_can_1PC : r_can_0PC; |
451260e7 | 562 | reloc.r_address = dotp->e_xvalue - |
030352e9 | 563 | ( (dotp < &usedot[NLOC] || readonlydata) ? 0 : datbase ); |
5b3c350a RH |
564 | reloc.r_length = ty_nlg[reloc_how]; |
565 | switch(x_type_mask){ | |
5178805d | 566 | case XXTRN | XUNDEF: |
5b3c350a | 567 | reloc.r_symbolnum = xp->e_xname->s_index; |
5178805d BJ |
568 | reloc.r_extern = 1; |
569 | break; | |
570 | default: | |
5b3c350a RH |
571 | if (readonlydata && (x_type_mask&~XXTRN) == XDATA) |
572 | x_type_mask = XTEXT | (x_type_mask&XXTRN); | |
573 | reloc.r_symbolnum = x_type_mask; | |
5178805d BJ |
574 | break; |
575 | } | |
576 | if ( (relfil == 0) || (relfil->rel_count >= NRELOC) ){ | |
577 | if (rel_free){ | |
578 | rel_temp = rel_free; | |
579 | rel_free = rel_temp->rel_next; | |
580 | } else { | |
581 | rel_temp = (struct relbufdesc *) | |
582 | Calloc(1,sizeof (struct relbufdesc)); | |
583 | } | |
584 | rel_temp->rel_count = 0; | |
585 | rel_temp->rel_next = relfil; | |
586 | relfil = rusefile[dotp - &usedot[0]] = rel_temp; | |
587 | } | |
588 | relfil->rel_reloc[relfil->rel_count++] = reloc; | |
589 | } | |
590 | /* | |
591 | * write the unrelocated value to the text file | |
592 | */ | |
5b3c350a RH |
593 | dotp->e_xvalue += ty_nbyte[reloc_how]; |
594 | if (pcrel) | |
595 | xp->e_xvalue -= dotp->e_xvalue; | |
f70ab843 RH |
596 | switch(reloc_how){ |
597 | case TYPO: | |
598 | case TYPQ: | |
599 | ||
600 | case TYPF: | |
601 | case TYPD: | |
602 | case TYPG: | |
603 | case TYPH: | |
604 | bignumwrite(xp->e_number, reloc_how); | |
605 | break; | |
606 | ||
607 | default: | |
608 | bwrite((char *)&(xp->e_xvalue), ty_nbyte[reloc_how], txtfil); | |
609 | break; | |
610 | } | |
5178805d BJ |
611 | } |
612 | /* | |
613 | * Flush out all of the relocation information. | |
614 | * Note that the individual lists of buffers are in | |
615 | * reverse order, so we must reverse them | |
616 | */ | |
617 | off_t closeoutrel(relocfile) | |
618 | BFILE *relocfile; | |
619 | { | |
620 | int locindex; | |
621 | u_long Closeoutrel(); | |
622 | ||
623 | trsize = 0; | |
624 | for (locindex = 0; locindex < NLOC; locindex++){ | |
625 | trsize += Closeoutrel(rusefile[locindex], relocfile); | |
626 | } | |
627 | drsize = 0; | |
628 | for (locindex = 0; locindex < NLOC; locindex++){ | |
629 | drsize += Closeoutrel(rusefile[NLOC + locindex], relocfile); | |
630 | } | |
631 | return(trsize + drsize); | |
632 | } | |
633 | ||
634 | u_long Closeoutrel(relfil, relocfile) | |
635 | struct relbufdesc *relfil; | |
636 | BFILE *relocfile; | |
637 | { | |
638 | u_long tail; | |
639 | if (relfil == 0) | |
640 | return(0L); | |
641 | tail = Closeoutrel(relfil->rel_next, relocfile); | |
642 | bwrite((char *)&relfil->rel_reloc[0], | |
643 | relfil->rel_count * sizeof (struct relocation_info), | |
644 | relocfile); | |
645 | return(tail + relfil->rel_count * sizeof (struct relocation_info)); | |
646 | } | |
647 | ||
451260e7 | 648 | #define NOUTSYMS (nsyms - njxxx - nforgotten - (savelabels ? 0 : nlabels)) |
5178805d BJ |
649 | int sizesymtab() |
650 | { | |
451260e7 | 651 | return (sizeof (struct nlist) * NOUTSYMS); |
5178805d BJ |
652 | } |
653 | ||
654 | #ifdef FLEXNAMES | |
655 | /* | |
656 | * We write out the flexible length character strings for names | |
657 | * in two stages. | |
ad67d5e5 | 658 | * 1) We always! maintain a fixed sized name list entry; |
5178805d BJ |
659 | * the string is indexed by a four byte quantity from the beginning |
660 | * of the string pool area. Index 0 is reserved, and indicates | |
661 | * that there is no associated string. The first valid index is 4. | |
662 | * 2) We concatenate together and write all of the strings | |
663 | * in the string pool at the end of the name list. The first | |
664 | * four bytes in the string pool are indexed only by 0 (see above); | |
665 | * they contain the total number of bytes in the string pool. | |
666 | */ | |
667 | #endif FLEXNAMES | |
668 | ||
669 | /* | |
670 | * Write out n symbols to file f, beginning at p | |
671 | * ignoring symbols that are obsolete, jxxx instructions, and | |
672 | * possibly, labels | |
673 | */ | |
674 | ||
675 | int symwrite(symfile) | |
676 | BFILE *symfile; | |
677 | { | |
ec43bca4 RH |
678 | int symsout; /*those actually written*/ |
679 | int symsdesired = NOUTSYMS; | |
680 | reg struct symtab *sp, *ub; | |
5178805d | 681 | #ifdef FLEXNAMES |
ec43bca4 RH |
682 | char *name; /* temp to save the name */ |
683 | int nread; | |
684 | char rbuf[2048]; | |
685 | int i; | |
451260e7 RH |
686 | /* |
687 | * We use sp->s_index to hold the length of the | |
688 | * name; it isn't used for anything else | |
689 | */ | |
5178805d BJ |
690 | #endif FLEXNAMES |
691 | ||
692 | register struct allocbox *allocwalk; | |
693 | ||
694 | symsout = 0; | |
695 | DECLITERATE(allocwalk, sp, ub) | |
696 | { | |
451260e7 | 697 | if (sp->s_tag >= IGNOREBOUND) |
5178805d | 698 | continue; |
ec43bca4 | 699 | if ((FETCHNAME(sp)[0] == 'L') && (sp->s_tag == LABELID) && !savelabels) |
5178805d BJ |
700 | continue; |
701 | symsout++; | |
451260e7 RH |
702 | |
703 | #ifdef FLEXNAMES | |
704 | name = sp->s_name; /* save pointer */ | |
ad67d5e5 RH |
705 | /* |
706 | * the length of the symbol table string | |
707 | * always includes the trailing null | |
708 | */ | |
ec43bca4 RH |
709 | if (sp->s_name && (sp->s_index = STRLEN(sp))){ |
710 | sp->s_nmx = STROFF(sp); /* clobber */ | |
451260e7 | 711 | } else { |
ad67d5e5 | 712 | sp->s_nmx = 0; |
451260e7 | 713 | } |
ec43bca4 RH |
714 | #ifdef DEBUG |
715 | printf("symbol %d: nmx == %d\n", symsout, sp->s_nmx); | |
716 | #endif DEBUG | |
717 | #endif FLEXNAMES | |
451260e7 | 718 | sp->s_type = (sp->s_ptype != 0) ? sp->s_ptype : (sp->s_type & (~XFORW)); |
030352e9 BJ |
719 | if (readonlydata && (sp->s_type&~N_EXT) == N_DATA) |
720 | sp->s_type = N_TEXT | (sp->s_type & N_EXT); | |
f70ab843 | 721 | bwrite((char *)&sp->s_nm, sizeof (struct nlist), symfile); |
451260e7 RH |
722 | #ifdef FLEXNAMES |
723 | sp->s_name = name; /* restore pointer */ | |
5178805d | 724 | #endif FLEXNAMES |
5178805d BJ |
725 | } |
726 | if (symsout != symsdesired) | |
727 | yyerror("INTERNAL ERROR: Wrote %d symbols, wanted to write %d symbols\n", | |
728 | symsout, symsdesired); | |
729 | #ifdef FLEXNAMES | |
730 | /* | |
ec43bca4 RH |
731 | * Copy the string temporary file to the symbol file, |
732 | * copying all the strings and symbols we ever saw, | |
733 | * including labels, stabs strings, ascii strings, etc. | |
734 | * This is slightly wasteful. | |
5178805d | 735 | */ |
ec43bca4 RH |
736 | i = 0; |
737 | while((nread = read(strfile->_file, rbuf, sizeof(rbuf))) > 0){ | |
738 | if (i == 0){ | |
739 | #ifdef DEBUG | |
740 | printf("%d bytes of strings\n", strfilepos); | |
741 | #endif DEBUG | |
742 | ((int *)rbuf)[0] = strfilepos; | |
ad67d5e5 | 743 | } |
ec43bca4 RH |
744 | bwrite(rbuf, nread, symfile); |
745 | i++; | |
5178805d BJ |
746 | } |
747 | #endif FLEXNAMES | |
748 | } |