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2000-12-11 Fernando Nasser <fnasser@redhat.com>
[deliverable/binutils-gdb.git] / bfd / vms-gsd.c
1 /* vms-gsd.c -- BFD back-end for VAX (openVMS/VAX) and
2 EVAX (openVMS/Alpha) files.
3 Copyright 1996, 1997, 1998, 1999 Free Software Foundation Inc.
4
5 go and read the openVMS linker manual (esp. appendix B)
6 if you don't know what's going on here :-)
7
8 Written by Klaus K"ampf (kkaempf@rmi.de)
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23
24
25 #include <ctype.h>
26
27 #include "bfd.h"
28 #include "sysdep.h"
29 #include "bfdlink.h"
30 #include "libbfd.h"
31
32 #include "vms.h"
33
34 /*-----------------------------------------------------------------------------*/
35
36 /* typical sections for vax object files */
37
38 #define VAX_CODE_NAME "$CODE"
39 #define VAX_DATA_NAME "$DATA"
40 #define VAX_ADDRESS_DATA_NAME "$ADDRESS_DATA"
41
42 /* typical sections for evax object files */
43
44 #define EVAX_ABS_NAME "$ABS$"
45 #define EVAX_CODE_NAME "$CODE$"
46 #define EVAX_LINK_NAME "$LINK$"
47 #define EVAX_DATA_NAME "$DATA$"
48 #define EVAX_BSS_NAME "$BSS$"
49 #define EVAX_READONLYADDR_NAME "$READONLY_ADDR$"
50 #define EVAX_READONLY_NAME "$READONLY$"
51 #define EVAX_LITERAL_NAME "$LITERAL$"
52 #define EVAX_COMMON_NAME "$COMMON$"
53 #define EVAX_LOCAL_NAME "$LOCAL$"
54
55 struct sec_flags_struct {
56 char *name; /* name of section */
57 int vflags_always;
58 flagword flags_always; /* flags we set always */
59 int vflags_hassize;
60 flagword flags_hassize; /* flags we set if the section has a size > 0 */
61 };
62
63 /* These flags are deccrtl/vaxcrtl (openVMS 6.2 VAX) compatible */
64
65 static struct sec_flags_struct vax_section_flags[] = {
66 { VAX_CODE_NAME,
67 (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_SHR|GPS_S_M_EXE|GPS_S_M_RD),
68 (SEC_CODE),
69 (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_SHR|GPS_S_M_EXE|GPS_S_M_RD),
70 (SEC_IN_MEMORY|SEC_CODE|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
71 { VAX_DATA_NAME,
72 (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD|GPS_S_M_WRT),
73 (SEC_DATA),
74 (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD|GPS_S_M_WRT),
75 (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
76 { VAX_ADDRESS_DATA_NAME,
77 (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD),
78 (SEC_DATA|SEC_READONLY),
79 (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD),
80 (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
81 { NULL,
82 (GPS_S_M_PIC|GPS_S_M_OVR|GPS_S_M_REL|GPS_S_M_GBL|GPS_S_M_RD|GPS_S_M_WRT),
83 (SEC_DATA),
84 (GPS_S_M_PIC|GPS_S_M_OVR|GPS_S_M_REL|GPS_S_M_GBL|GPS_S_M_RD|GPS_S_M_WRT),
85 (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) }
86 };
87
88
89 /* These flags are deccrtl/vaxcrtl (openVMS 6.2 Alpha) compatible */
90
91 static struct sec_flags_struct evax_section_flags[] = {
92 { EVAX_ABS_NAME,
93 (EGPS_S_V_SHR),
94 (SEC_DATA),
95 (EGPS_S_V_SHR),
96 (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
97 { EVAX_CODE_NAME,
98 (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_EXE),
99 (SEC_CODE),
100 (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_EXE),
101 (SEC_IN_MEMORY|SEC_CODE|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
102 { EVAX_LITERAL_NAME,
103 (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD|EGPS_S_V_NOMOD),
104 (SEC_DATA|SEC_READONLY),
105 (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD),
106 (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
107 { EVAX_LINK_NAME,
108 (EGPS_S_V_REL|EGPS_S_V_RD),
109 (SEC_DATA|SEC_READONLY),
110 (EGPS_S_V_REL|EGPS_S_V_RD),
111 (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
112 { EVAX_DATA_NAME,
113 (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD),
114 (SEC_DATA),
115 (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
116 (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
117 { EVAX_BSS_NAME,
118 (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD),
119 (SEC_NO_FLAGS),
120 (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD),
121 (SEC_IN_MEMORY|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
122 { EVAX_READONLYADDR_NAME,
123 (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_RD),
124 (SEC_DATA|SEC_READONLY),
125 (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_RD),
126 (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
127 { EVAX_READONLY_NAME,
128 (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD|EGPS_S_V_NOMOD),
129 (SEC_DATA|SEC_READONLY),
130 (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD),
131 (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
132 { EVAX_LOCAL_NAME,
133 (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
134 (SEC_DATA),
135 (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
136 (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
137 { NULL,
138 (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
139 (SEC_DATA),
140 (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
141 (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) }
142 };
143
144 /* Retrieve bfd section flags by name and size */
145
146 static flagword
147 vms_secflag_by_name (abfd, section_flags, name, size)
148 bfd *abfd;
149 struct sec_flags_struct *section_flags;
150 char *name;
151 int size;
152 {
153 int i = 0;
154
155 while (section_flags[i].name != NULL)
156 {
157 if ((PRIV(is_vax)?
158 strcasecmp (name, section_flags[i].name):
159 strcmp (name, section_flags[i].name)) == 0)
160 {
161 if (size > 0)
162 return section_flags[i].flags_hassize;
163 else
164 return section_flags[i].flags_always;
165 }
166 i++;
167 }
168 if (size > 0)
169 return section_flags[i].flags_hassize;
170 return section_flags[i].flags_always;
171 }
172
173
174 /* Retrieve vms section flags by name and size */
175
176 static flagword
177 vms_esecflag_by_name (section_flags, name, size)
178 struct sec_flags_struct *section_flags;
179 char *name;
180 int size;
181 {
182 int i = 0;
183
184 while (section_flags[i].name != NULL)
185 {
186 if (strcmp (name, section_flags[i].name) == 0)
187 {
188 if (size > 0)
189 return section_flags[i].vflags_hassize;
190 else
191 return section_flags[i].vflags_always;
192 }
193 i++;
194 }
195 if (size > 0)
196 return section_flags[i].vflags_hassize;
197 return section_flags[i].vflags_always;
198 }
199
200 /*-----------------------------------------------------------------------------*/
201 #if VMS_DEBUG
202 /* debug */
203
204 struct flagdescstruct { char *name; flagword value; };
205
206 /* Convert flag to printable string */
207
208 static char *
209 flag2str(flagdesc, flags)
210 struct flagdescstruct *flagdesc;
211 flagword flags;
212 {
213
214 static char res[64];
215 int next = 0;
216
217 res[0] = 0;
218 while (flagdesc->name != NULL)
219 {
220 if ((flags & flagdesc->value) != 0)
221 {
222 if (next)
223 strcat(res, ",");
224 else
225 next = 1;
226 strcat (res, flagdesc->name);
227 }
228 flagdesc++;
229 }
230 return res;
231 }
232 #endif
233
234 /*-----------------------------------------------------------------------------*/
235 /* input routines */
236
237 /* Process GSD/EGSD record
238 return 0 on success, -1 on error */
239
240 int
241 _bfd_vms_slurp_gsd (abfd, objtype)
242 bfd *abfd;
243 int objtype;
244 {
245 #if VMS_DEBUG
246 static struct flagdescstruct gpsflagdesc[] =
247 {
248 { "PIC", 0x0001 },
249 { "LIB", 0x0002 },
250 { "OVR", 0x0004 },
251 { "REL", 0x0008 },
252 { "GBL", 0x0010 },
253 { "SHR", 0x0020 },
254 { "EXE", 0x0040 },
255 { "RD", 0x0080 },
256 { "WRT", 0x0100 },
257 { "VEC", 0x0200 },
258 { "NOMOD", 0x0400 },
259 { "COM", 0x0800 },
260 { NULL, 0 }
261 };
262
263 static struct flagdescstruct gsyflagdesc[] =
264 {
265 { "WEAK", 0x0001 },
266 { "DEF", 0x0002 },
267 { "UNI", 0x0004 },
268 { "REL", 0x0008 },
269 { "COMM", 0x0010 },
270 { "VECEP", 0x0020 },
271 { "NORM", 0x0040 },
272 { NULL, 0 }
273 };
274 #endif
275
276 int gsd_type, gsd_size;
277 asection *section;
278 unsigned char *vms_rec;
279 flagword new_flags, old_flags;
280 char *name;
281 asymbol *symbol;
282 vms_symbol_entry *entry;
283 unsigned long base_addr;
284 unsigned long align_addr;
285 static unsigned int psect_idx = 0;
286
287 #if VMS_DEBUG
288 vms_debug (2, "GSD/EGSD (%d/%x)\n", objtype, objtype);
289 #endif
290
291 switch (objtype)
292 {
293 case EOBJ_S_C_EGSD:
294 PRIV(vms_rec) += 8; /* skip type, size, l_temp */
295 PRIV(rec_size) -= 8;
296 break;
297 case OBJ_S_C_GSD:
298 PRIV(vms_rec) += 1;
299 PRIV(rec_size) -= 1;
300 break;
301 default:
302 return -1;
303 }
304
305 /* calculate base address for each section */
306 base_addr = 0L;
307
308 abfd->symcount = 0;
309
310 while (PRIV(rec_size) > 0)
311 {
312 vms_rec = PRIV(vms_rec);
313
314 if (objtype == OBJ_S_C_GSD)
315 {
316 gsd_type = *vms_rec;
317 }
318 else
319 {
320 _bfd_vms_get_header_values (abfd, vms_rec, &gsd_type, &gsd_size);
321 gsd_type += EVAX_OFFSET;
322 }
323
324 #if VMS_DEBUG
325 vms_debug (3, "gsd_type %d\n", gsd_type);
326 #endif
327
328 switch (gsd_type)
329 {
330 case GSD_S_C_PSC:
331 {
332 /*
333 * program section definition
334 */
335
336 asection *old_section = 0;
337
338 #if VMS_DEBUG
339 vms_debug (4, "GSD_S_C_PSC\n");
340 #endif
341 /* If this section isn't a bfd section. */
342
343 if (PRIV(is_vax) && (psect_idx < (abfd->section_count-1)))
344 {
345 /* check for temporary section from TIR record. */
346
347 if (psect_idx < PRIV(section_count))
348 old_section = PRIV(sections)[psect_idx];
349 else
350 old_section = 0;
351 }
352
353 name = _bfd_vms_save_counted_string (vms_rec + 8);
354 section = bfd_make_section (abfd, name);
355 if (!section)
356 {
357 (*_bfd_error_handler) (_("bfd_make_section (%s) failed"),
358 name);
359 return -1;
360 }
361 old_flags = bfd_getl16 (vms_rec + 2);
362 section->_raw_size = bfd_getl32(vms_rec + 4); /* allocation */
363 new_flags = vms_secflag_by_name (abfd, vax_section_flags, name, section->_raw_size);
364 if (old_flags & EGPS_S_V_REL)
365 new_flags |= SEC_RELOC;
366 if (old_flags & GPS_S_M_OVR)
367 new_flags |= SEC_IS_COMMON;
368 if (!bfd_set_section_flags (abfd, section, new_flags))
369 {
370 (*_bfd_error_handler)
371 (_("bfd_set_section_flags (%s, %x) failed"),
372 name, new_flags);
373 return -1;
374 }
375 section->alignment_power = vms_rec[1];
376 align_addr = (1 << section->alignment_power);
377 if ((base_addr % align_addr) != 0)
378 base_addr += (align_addr - (base_addr % align_addr));
379 section->vma = (bfd_vma)base_addr;
380 base_addr += section->_raw_size;
381
382 /* global section is common symbol */
383
384 if (old_flags & GPS_S_M_GBL)
385 {
386 entry = _bfd_vms_enter_symbol (abfd, name);
387 if (entry == (vms_symbol_entry *)NULL)
388 {
389 bfd_set_error (bfd_error_no_memory);
390 return -1;
391 }
392 symbol = entry->symbol;
393
394 symbol->value = 0;
395 symbol->section = section;
396 symbol->flags = (BSF_GLOBAL|BSF_SECTION_SYM|BSF_OLD_COMMON);
397 }
398
399 /* copy saved contents if old_section set */
400
401 if (old_section != 0)
402 {
403 section->contents = old_section->contents;
404 if (section->_raw_size < old_section->_raw_size)
405 {
406 (*_bfd_error_handler)
407 (_("Size mismatch section %s=%lx, %s=%lx"),
408 old_section->name,
409 (unsigned long) old_section->_raw_size,
410 section->name,
411 (unsigned long) section->_raw_size);
412 return -1;
413 }
414 else if (section->_raw_size > old_section->_raw_size)
415 {
416 section->contents = ((unsigned char *)
417 bfd_realloc (old_section->contents, section->_raw_size));
418 if (section->contents == NULL)
419 {
420 bfd_set_error (bfd_error_no_memory);
421 return -1;
422 }
423 }
424 }
425 else
426 {
427 section->contents = ((unsigned char *)
428 bfd_malloc (section->_raw_size));
429 if (section->contents == NULL)
430 {
431 bfd_set_error (bfd_error_no_memory);
432 return -1;
433 }
434 memset (section->contents, 0, (size_t)section->_raw_size);
435 }
436 section->_cooked_size = section->_raw_size;
437 #if VMS_DEBUG
438 vms_debug (4, "gsd psc %d (%s, flags %04x=%s) ",
439 section->index, name, old_flags, flag2str (gpsflagdesc, old_flags));
440 vms_debug (4, "%d bytes at 0x%08lx (mem %p)\n",
441 section->_raw_size, section->vma, section->contents);
442 #endif
443
444 gsd_size = vms_rec[8] + 9;
445
446 psect_idx++;
447 }
448 break;
449
450 case GSD_S_C_EPM:
451 case GSD_S_C_EPMW:
452 #if VMS_DEBUG
453 vms_debug(4, "gsd epm\n");
454 #endif
455 /*FALLTHRU*/
456 case GSD_S_C_SYM:
457 case GSD_S_C_SYMW:
458 {
459 int name_offset, value_offset;
460
461 /*
462 * symbol specification (definition or reference)
463 */
464
465 #if VMS_DEBUG
466 vms_debug (4, "GSD_S_C_SYM(W)\n");
467 #endif
468 old_flags = bfd_getl16 (vms_rec + 2);
469 new_flags = BSF_NO_FLAGS;
470
471 if (old_flags & GSY_S_M_WEAK)
472 new_flags |= BSF_WEAK;
473
474 switch (gsd_type)
475 {
476 case GSD_S_C_EPM:
477 name_offset = 11;
478 value_offset = 5;
479 new_flags |= BSF_FUNCTION;
480 break;
481 case GSD_S_C_EPMW:
482 name_offset = 12;
483 value_offset = 6;
484 new_flags |= BSF_FUNCTION;
485 break;
486 case GSD_S_C_SYM:
487 if (old_flags & GSY_S_M_DEF) /* symbol definition */
488 name_offset = 9;
489 else
490 name_offset = 4;
491 value_offset = 5;
492 break;
493 case GSD_S_C_SYMW:
494 if (old_flags & GSY_S_M_DEF) /* symbol definition */
495 name_offset = 10;
496 else
497 name_offset = 5;
498 value_offset = 6;
499 break;
500 }
501
502 /* save symbol in vms_symbol_table */
503
504 entry = _bfd_vms_enter_symbol (abfd,
505 _bfd_vms_save_counted_string (vms_rec + name_offset));
506 if (entry == (vms_symbol_entry *)NULL)
507 {
508 bfd_set_error (bfd_error_no_memory);
509 return -1;
510 }
511 symbol = entry->symbol;
512
513 if (old_flags & GSY_S_M_DEF) /* symbol definition */
514 {
515 int psect;
516
517 symbol->value = bfd_getl32 (vms_rec+value_offset);
518 if ((gsd_type == GSD_S_C_SYMW)
519 || (gsd_type == GSD_S_C_EPMW))
520 psect = bfd_getl16 (vms_rec + value_offset - 2);
521 else
522 psect = vms_rec[value_offset-1];
523
524 symbol->section = (asection *)psect;
525 #if VMS_DEBUG
526 vms_debug(4, "gsd sym def #%d (%s, %d [%p], %04x=%s)\n", abfd->symcount,
527 symbol->name, (int)symbol->section, symbol->section, old_flags, flag2str(gsyflagdesc, old_flags));
528 #endif
529 }
530 else /* symbol reference */
531 {
532 symbol->section = bfd_make_section (abfd, BFD_UND_SECTION_NAME);
533 #if VMS_DEBUG
534 vms_debug (4, "gsd sym ref #%d (%s, %s [%p], %04x=%s)\n", abfd->symcount,
535 symbol->name, symbol->section->name, symbol->section, old_flags, flag2str (gsyflagdesc, old_flags));
536 #endif
537 }
538
539 gsd_size = vms_rec[name_offset] + name_offset + 1;
540 symbol->flags = new_flags;
541 }
542
543 break;
544
545 case GSD_S_C_PRO:
546 case GSD_S_C_PROW:
547 #if VMS_DEBUG
548 vms_debug(4, "gsd pro\n");
549 #endif
550 break;
551 case GSD_S_C_IDC:
552 #if VMS_DEBUG
553 vms_debug(4, "gsd idc\n");
554 #endif
555 break;
556 case GSD_S_C_ENV:
557 #if VMS_DEBUG
558 vms_debug(4, "gsd env\n");
559 #endif
560 break;
561 case GSD_S_C_LSY:
562 #if VMS_DEBUG
563 vms_debug(4, "gsd lsy\n");
564 #endif
565 break;
566 case GSD_S_C_LEPM:
567 #if VMS_DEBUG
568 vms_debug(4, "gsd lepm\n");
569 #endif
570 break;
571 case GSD_S_C_LPRO:
572 #if VMS_DEBUG
573 vms_debug(4, "gsd lpro\n");
574 #endif
575 break;
576 case GSD_S_C_SPSC:
577 #if VMS_DEBUG
578 vms_debug(4, "gsd spsc\n");
579 #endif
580 break;
581 case GSD_S_C_SYMV:
582 #if VMS_DEBUG
583 vms_debug(4, "gsd symv\n");
584 #endif
585 break;
586 case GSD_S_C_EPMV:
587 #if VMS_DEBUG
588 vms_debug(4, "gsd epmv\n");
589 #endif
590 break;
591 case GSD_S_C_PROV:
592 #if VMS_DEBUG
593 vms_debug(4, "gsd prov\n");
594 #endif
595 break;
596
597 case EGSD_S_C_PSC + EVAX_OFFSET:
598 {
599 /* program section definition */
600
601 name = _bfd_vms_save_counted_string (vms_rec+12);
602 section = bfd_make_section (abfd, name);
603 if (!section)
604 return -1;
605 old_flags = bfd_getl16 (vms_rec + 6);
606 section->_raw_size = bfd_getl32 (vms_rec + 8); /* allocation */
607 new_flags = vms_secflag_by_name (abfd, evax_section_flags, name, (int) section->_raw_size);
608 if (old_flags & EGPS_S_V_REL)
609 new_flags |= SEC_RELOC;
610 if (!bfd_set_section_flags (abfd, section, new_flags))
611 return -1;
612 section->alignment_power = vms_rec[4];
613 align_addr = (1 << section->alignment_power);
614 if ((base_addr % align_addr) != 0)
615 base_addr += (align_addr - (base_addr % align_addr));
616 section->vma = (bfd_vma)base_addr;
617 base_addr += section->_raw_size;
618 section->contents = ((unsigned char *)
619 bfd_malloc (section->_raw_size));
620 if (section->contents == NULL)
621 return -1;
622 memset (section->contents, 0, (size_t) section->_raw_size);
623 section->_cooked_size = section->_raw_size;
624 #if VMS_DEBUG
625 vms_debug(4, "egsd psc %d (%s, flags %04x=%s) ",
626 section->index, name, old_flags, flag2str(gpsflagdesc, old_flags));
627 vms_debug(4, "%d bytes at 0x%08lx (mem %p)\n",
628 section->_raw_size, section->vma, section->contents);
629 #endif
630 }
631 break;
632
633 case EGSD_S_C_SYM + EVAX_OFFSET:
634 {
635 /* symbol specification (definition or reference) */
636
637 symbol = _bfd_vms_make_empty_symbol (abfd);
638 if (symbol == 0)
639 return -1;
640
641 old_flags = bfd_getl16 (vms_rec + 6);
642 new_flags = BSF_NO_FLAGS;
643
644 if (old_flags & EGSY_S_V_WEAK)
645 new_flags |= BSF_WEAK;
646
647 if (vms_rec[6] & EGSY_S_V_DEF) /* symbol definition */
648 {
649 symbol->name =
650 _bfd_vms_save_counted_string (vms_rec+32);
651 if (old_flags & EGSY_S_V_NORM)
652 { /* proc def */
653 new_flags |= BSF_FUNCTION;
654 }
655 symbol->value = bfd_getl64 (vms_rec+8);
656 symbol->section = (asection *)((unsigned long) bfd_getl32 (vms_rec+28));
657 #if VMS_DEBUG
658 vms_debug(4, "egsd sym def #%d (%s, %d, %04x=%s)\n", abfd->symcount,
659 symbol->name, (int)symbol->section, old_flags, flag2str(gsyflagdesc, old_flags));
660 #endif
661 }
662 else /* symbol reference */
663 {
664 symbol->name =
665 _bfd_vms_save_counted_string (vms_rec+8);
666 #if VMS_DEBUG
667 vms_debug(4, "egsd sym ref #%d (%s, %04x=%s)\n", abfd->symcount,
668 symbol->name, old_flags, flag2str(gsyflagdesc, old_flags));
669 #endif
670 symbol->section = bfd_make_section (abfd, BFD_UND_SECTION_NAME);
671 }
672
673 symbol->flags = new_flags;
674
675 /* save symbol in vms_symbol_table */
676
677 entry = (vms_symbol_entry *) bfd_hash_lookup (PRIV(vms_symbol_table), symbol->name, true, false);
678 if (entry == (vms_symbol_entry *)NULL)
679 {
680 bfd_set_error (bfd_error_no_memory);
681 return -1;
682 }
683 if (entry->symbol != (asymbol *)NULL)
684 { /* FIXME ?, DEC C generates this */
685 #if VMS_DEBUG
686 vms_debug(4, "EGSD_S_C_SYM: duplicate \"%s\"\n", symbol->name);
687 #endif
688 }
689 else
690 {
691 entry->symbol = symbol;
692 PRIV(gsd_sym_count)++;
693 abfd->symcount++;
694 }
695 }
696 break;
697
698 case EGSD_S_C_IDC + EVAX_OFFSET:
699 break;
700
701 default:
702 (*_bfd_error_handler) (_("unknown gsd/egsd subtype %d"), gsd_type);
703 bfd_set_error (bfd_error_bad_value);
704 return -1;
705
706 } /* switch */
707
708 PRIV(rec_size) -= gsd_size;
709 PRIV(vms_rec) += gsd_size;
710
711 } /* while (recsize > 0) */
712
713 if (abfd->symcount > 0)
714 abfd->flags |= HAS_SYMS;
715
716 return 0;
717 }
718
719 /*-----------------------------------------------------------------------------*/
720 /* output routines */
721
722 /* Write section and symbol directory of bfd abfd */
723
724 int
725 _bfd_vms_write_gsd (abfd, objtype)
726 bfd *abfd;
727 int objtype ATTRIBUTE_UNUSED;
728 {
729 asection *section;
730 asymbol *symbol;
731 unsigned int symnum;
732 int last_index = -1;
733 char dummy_name[10];
734 char *sname;
735 flagword new_flags, old_flags;
736
737 #if VMS_DEBUG
738 vms_debug (2, "vms_write_gsd (%p, %d)\n", abfd, objtype);
739 #endif
740
741 /* output sections */
742
743 section = abfd->sections;
744 #if VMS_DEBUG
745 vms_debug (3, "%d sections found\n", abfd->section_count);
746 #endif
747
748 /* egsd is quadword aligned */
749
750 _bfd_vms_output_alignment (abfd, 8);
751
752 _bfd_vms_output_begin (abfd, EOBJ_S_C_EGSD, -1);
753 _bfd_vms_output_long (abfd, 0);
754 _bfd_vms_output_push (abfd); /* prepare output for subrecords */
755
756 while (section != 0)
757 {
758 #if VMS_DEBUG
759 vms_debug (3, "Section #%d %s, %d bytes\n", section->index, section->name, (int)section->_raw_size);
760 #endif
761
762 /* 13 bytes egsd, max 31 chars name -> should be 44 bytes */
763 if (_bfd_vms_output_check (abfd, 64) < 0)
764 {
765 _bfd_vms_output_pop (abfd);
766 _bfd_vms_output_end (abfd);
767 _bfd_vms_output_begin (abfd, EOBJ_S_C_EGSD, -1);
768 _bfd_vms_output_long (abfd, 0);
769 _bfd_vms_output_push (abfd); /* prepare output for subrecords */
770 }
771
772 /* Create dummy sections to keep consecutive indices */
773
774 while (section->index - last_index > 1)
775 {
776 #if VMS_DEBUG
777 vms_debug (3, "index %d, last %d\n", section->index, last_index);
778 #endif
779 _bfd_vms_output_begin (abfd, EGSD_S_C_PSC, -1);
780 _bfd_vms_output_short (abfd, 0);
781 _bfd_vms_output_short (abfd, 0);
782 _bfd_vms_output_long (abfd, 0);
783 sprintf (dummy_name, ".DUMMY%02d", last_index);
784 _bfd_vms_output_counted (abfd, dummy_name);
785 _bfd_vms_output_flush (abfd);
786 last_index++;
787 }
788
789 /* Don't know if this is neccesary for the linker but for now it keeps
790 vms_slurp_gsd happy */
791
792 sname = (char *)section->name;
793 if (*sname == '.')
794 {
795 sname++;
796 if ((*sname == 't') && (strcmp (sname, "text") == 0))
797 sname = PRIV(is_vax)?VAX_CODE_NAME:EVAX_CODE_NAME;
798 else if ((*sname == 'd') && (strcmp (sname, "data") == 0))
799 sname = PRIV(is_vax)?VAX_DATA_NAME:EVAX_DATA_NAME;
800 else if ((*sname == 'b') && (strcmp (sname, "bss") == 0))
801 sname = EVAX_BSS_NAME;
802 else if ((*sname == 'l') && (strcmp (sname, "link") == 0))
803 sname = EVAX_LINK_NAME;
804 else if ((*sname == 'r') && (strcmp (sname, "rdata") == 0))
805 sname = EVAX_READONLY_NAME;
806 else if ((*sname == 'l') && (strcmp (sname, "literal") == 0))
807 sname = EVAX_LITERAL_NAME;
808 else if ((*sname == 'c') && (strcmp (sname, "comm") == 0))
809 sname = EVAX_COMMON_NAME;
810 else if ((*sname == 'l') && (strcmp (sname, "lcomm") == 0))
811 sname = EVAX_LOCAL_NAME;
812 }
813 else
814 sname = _bfd_vms_length_hash_symbol (abfd, sname, EOBJ_S_C_SECSIZ);
815
816 _bfd_vms_output_begin (abfd, EGSD_S_C_PSC, -1);
817 _bfd_vms_output_short (abfd, section->alignment_power & 0xff);
818 if (bfd_is_com_section (section))
819 {
820 new_flags = (EGPS_S_V_OVR|EGPS_S_V_REL|EGPS_S_V_GBL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD|EGPS_S_V_COM);
821 }
822 else
823 {
824 new_flags = vms_esecflag_by_name (evax_section_flags, sname, section->_raw_size);
825 }
826 _bfd_vms_output_short (abfd, new_flags);
827 _bfd_vms_output_long (abfd, section->_raw_size);
828 _bfd_vms_output_counted (abfd, sname);
829 _bfd_vms_output_flush (abfd);
830
831 last_index = section->index;
832 section = section->next;
833 }
834
835 /* output symbols */
836
837 #if VMS_DEBUG
838 vms_debug (3, "%d symbols found\n", abfd->symcount);
839 #endif
840
841 bfd_set_start_address (abfd, (bfd_vma)-1);
842
843 for (symnum = 0; symnum < abfd->symcount; symnum++)
844 {
845
846 symbol = abfd->outsymbols[symnum];
847 if (*(symbol->name) == '_')
848 {
849 if (strcmp (symbol->name, "__main") == 0)
850 bfd_set_start_address (abfd, (bfd_vma)symbol->value);
851 }
852 old_flags = symbol->flags;
853
854 if (old_flags & BSF_FILE)
855 continue;
856
857 if (((old_flags & (BSF_GLOBAL|BSF_WEAK)) == 0) /* not xdef */
858 && (!bfd_is_und_section (symbol->section))) /* and not xref */
859 continue; /* dont output */
860
861 /* 13 bytes egsd, max 64 chars name -> should be 77 bytes */
862
863 if (_bfd_vms_output_check (abfd, 80) < 0)
864 {
865 _bfd_vms_output_pop (abfd);
866 _bfd_vms_output_end (abfd);
867 _bfd_vms_output_begin (abfd, EOBJ_S_C_EGSD, -1);
868 _bfd_vms_output_long (abfd, 0);
869 _bfd_vms_output_push (abfd); /* prepare output for subrecords */
870 }
871
872 _bfd_vms_output_begin (abfd, EGSD_S_C_SYM, -1);
873
874 _bfd_vms_output_short (abfd, 0); /* data type, alignment */
875
876 new_flags = 0;
877
878 if (old_flags & BSF_WEAK)
879 new_flags |= EGSY_S_V_WEAK;
880 if (bfd_is_com_section (symbol->section)) /* .comm */
881 new_flags |= (EGSY_S_V_WEAK|EGSY_S_V_COMM);
882
883 if (old_flags & BSF_FUNCTION)
884 {
885 new_flags |= EGSY_S_V_NORM;
886 new_flags |= EGSY_S_V_REL;
887 }
888 if (old_flags & (BSF_GLOBAL|BSF_WEAK))
889 {
890 new_flags |= EGSY_S_V_DEF;
891 if (!bfd_is_abs_section (symbol->section))
892 new_flags |= EGSY_S_V_REL;
893 }
894 _bfd_vms_output_short (abfd, new_flags);
895
896 if (old_flags & (BSF_GLOBAL|BSF_WEAK)) /* symbol definition */
897 {
898 if (old_flags & BSF_FUNCTION)
899 {
900 _bfd_vms_output_quad (abfd, symbol->value);
901 _bfd_vms_output_quad (abfd,
902 ((asymbol *)(symbol->udata.p))->value);
903 _bfd_vms_output_long (abfd,
904 (((asymbol *)(symbol->udata.p))
905 ->section->index));
906 _bfd_vms_output_long (abfd, symbol->section->index);
907 }
908 else
909 {
910 _bfd_vms_output_quad (abfd, symbol->value); /* L_VALUE */
911 _bfd_vms_output_quad (abfd, 0); /* L_CODE_ADDRESS */
912 _bfd_vms_output_long (abfd, 0); /* L_CA_PSINDX */
913 _bfd_vms_output_long (abfd, symbol->section->index);/* L_PSINDX */
914 }
915 }
916 _bfd_vms_output_counted (abfd, _bfd_vms_length_hash_symbol (abfd, symbol->name, EOBJ_S_C_SYMSIZ));
917
918 _bfd_vms_output_flush (abfd);
919
920 }
921
922 _bfd_vms_output_alignment (abfd, 8);
923 _bfd_vms_output_pop (abfd);
924 _bfd_vms_output_end (abfd);
925
926 return 0;
927 }
GDB Binutils - Deliverables
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