1 /* BFD backend for hp-ux 9000/300
2 Copyright 1990, 1991, 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002,
3 2003, 2004 Free Software Foundation, Inc.
4 Written by Glenn Engel.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
21
22 /*
23 hpux native ------------> | |
24 | hp300hpux bfd | ----------> hpux w/gnu ext
25 hpux w/gnu extension ----> | |
26
27 Support for the 9000/[34]00 has several limitations.
28 1. Shared libraries are not supported.
29 2. The output format from this bfd is not usable by native tools.
30
31 The primary motivation for writing this bfd was to allow use of
32 gdb and gcc for host based debugging and not to mimic the hp-ux tools
33 in every detail. This leads to a significant simplification of the
34 code and a leap in performance. The decision to not output hp native
35 compatible objects was further strengthened by the fact that the richness
36 of the gcc compiled objects could not be represented without loss of
37 information. For example, while the hp format supports the concept of
38 secondary symbols, it does not support indirect symbols. Another
39 reason is to maintain backwards compatibility with older implementations
40 of gcc on hpux which used 'hpxt' to translate .a and .o files into a
41 format which could be readily understood by the gnu linker and gdb.
42 This allows reading hp secondary symbols and converting them into
43 indirect symbols but the reverse it not always possible.
44
45 Another example of differences is that the hp format stores symbol offsets
46 in the object code while the gnu utilities use a field in the
47 relocation record for this. To support the hp native format, the object
48 code would need to be patched with the offsets when producing .o files.
49
50 The basic technique taken in this implementation is to #include the code
51 from aoutx.h and aout-target.h with appropriate #defines to override
52 code where a unique implementation is needed:
53
54 {
55 #define a bunch of stuff
56 #include <aoutx.h>
57
58 implement a bunch of functions
59
60 #include "aout-target.h"
61 }
62
63 The hp symbol table is a bit different than other a.out targets. Instead
64 of having an array of nlist items and an array of strings, hp's format
65 has them mixed together in one structure. In addition, the strings are
66 not null terminated. It looks something like this:
67
68 nlist element 1
69 string1
70 nlist element 2
71 string2
72 ...
73
74 The whole symbol table is read as one chunk and then we march thru it
75 and convert it to canonical form. As we march thru the table, we copy
76 the nlist data into the internal form and we compact the strings and null
77 terminate them, using storage from the already allocated symbol table:
78
79 string1
80 null
81 string2
82 null
83 */
84
85 /* @@ Is this really so different from normal a.out that it needs to include
86 aoutx.h? We should go through this file sometime and see what can be made
87 more dependent on aout32.o and what might need to be broken off and accessed
88 through the backend_data field. Or, maybe we really do need such a
89 completely separate implementation. I don't have time to investigate this
90 much further right now. [raeburn:19930428.2124EST] */
91 /* @@ Also, note that there wind up being two versions of some routines, with
92 different names, only one of which actually gets used. For example:
93 slurp_symbol_table
94 swap_std_reloc_in
95 slurp_reloc_table
96 canonicalize_symtab
97 get_symtab_upper_bound
98 canonicalize_reloc
99 mkobject
100 This should also be fixed. */
101
102 #define TARGETNAME "a.out-hp300hpux"
103
104 /* Do not "beautify" the CONCAT* macro args. Traditional C will not
105 remove whitespace added here, and thus will fail to concatenate
106 the tokens. */
107 #define MY(OP) CONCAT2 (hp300hpux_,OP)
108
109 #define external_exec hp300hpux_exec_bytes
110 #define external_nlist hp300hpux_nlist_bytes
111
112 #include "aout/hp300hpux.h"
113
114 /* define these so we can compile unused routines in aoutx.h */
115 #define e_strx e_shlib
116 #define e_other e_length
117 #define e_desc e_almod
118
119 #define AR_PAD_CHAR '/'
120 #define TARGET_IS_BIG_ENDIAN_P
121 #define DEFAULT_ARCH bfd_arch_m68k
122
123 #define MY_get_section_contents aout_32_get_section_contents
124 #define MY_slurp_armap bfd_slurp_bsd_armap_f2
125
126 /***********************************************/
127 /* provide overrides for routines in this file */
128 /***********************************************/
129 /* these don't use MY because that causes problems within JUMP_TABLE
130 (CONCAT2 winds up being expanded recursively, which ANSI C compilers
131 will not do). */
132 #define MY_canonicalize_symtab hp300hpux_canonicalize_symtab
133 #define MY_get_symtab_upper_bound hp300hpux_get_symtab_upper_bound
134 #define MY_canonicalize_reloc hp300hpux_canonicalize_reloc
135 #define MY_write_object_contents hp300hpux_write_object_contents
136
137 #define MY_read_minisymbols _bfd_generic_read_minisymbols
138 #define MY_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
139
140 #define MY_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
141 #define MY_bfd_link_add_symbols _bfd_generic_link_add_symbols
142 #define MY_final_link_callback unused
143 #define MY_bfd_final_link _bfd_generic_final_link
144
145 /* Until and unless we convert the slurp_reloc and slurp_symtab
146 routines in this file, we can not use the default aout
147 free_cached_info routine which assumes that the relocs and symtabs
148 were allocated using malloc. */
149 #define MY_bfd_free_cached_info bfd_true
150
151 #define hp300hpux_write_syms aout_32_write_syms
152
153 #define MY_callback MY(callback)
154
155 #define MY_exec_hdr_flags 0x2
156
157 #define NAME_swap_exec_header_in NAME(hp300hpux_32_,swap_exec_header_in)
158
159 #define HP_SYMTYPE_UNDEFINED 0x00
160 #define HP_SYMTYPE_ABSOLUTE 0x01
161 #define HP_SYMTYPE_TEXT 0x02
162 #define HP_SYMTYPE_DATA 0x03
163 #define HP_SYMTYPE_BSS 0x04
164 #define HP_SYMTYPE_COMMON 0x05
165
166 #define HP_SYMTYPE_TYPE 0x0F
167 #define HP_SYMTYPE_FILENAME 0x1F
168
169 #define HP_SYMTYPE_ALIGN 0x10
170 #define HP_SYMTYPE_EXTERNAL 0x20
171 #define HP_SECONDARY_SYMBOL 0x40
172
173 /* RELOCATION DEFINITIONS */
174 #define HP_RSEGMENT_TEXT 0x00
175 #define HP_RSEGMENT_DATA 0x01
176 #define HP_RSEGMENT_BSS 0x02
177 #define HP_RSEGMENT_EXTERNAL 0x03
178 #define HP_RSEGMENT_PCREL 0x04
179 #define HP_RSEGMENT_RDLT 0x05
180 #define HP_RSEGMENT_RPLT 0x06
181 #define HP_RSEGMENT_NOOP 0x3F
182
183 #define HP_RLENGTH_BYTE 0x00
184 #define HP_RLENGTH_WORD 0x01
185 #define HP_RLENGTH_LONG 0x02
186 #define HP_RLENGTH_ALIGN 0x03
187
188 #define NAME(x,y) CONCAT3 (hp300hpux,_32_,y)
189 #define ARCH_SIZE 32
190
191 /* aoutx.h requires definitions for BMAGIC and QMAGIC. */
192 #define BMAGIC HPUX_DOT_O_MAGIC
193 #define QMAGIC 0314
194
195 #include "aoutx.h"
196
197 static const bfd_target * MY (callback)
198 PARAMS ((bfd *));
199 static bfd_boolean MY (write_object_contents)
200 PARAMS ((bfd *));
201 static void convert_sym_type
202 PARAMS ((struct external_nlist *, aout_symbol_type *, bfd *));
203
204 bfd_boolean MY (slurp_symbol_table)
205 PARAMS ((bfd *));
206 void MY (swap_std_reloc_in)
207 PARAMS ((bfd *, struct hp300hpux_reloc *, arelent *, asymbol **,
208 bfd_size_type));
209 bfd_boolean MY (slurp_reloc_table)
210 PARAMS ((bfd *, sec_ptr, asymbol **));
211 long MY (canonicalize_symtab)
212 PARAMS ((bfd *, asymbol **));
213 long MY (get_symtab_upper_bound)
214 PARAMS ((bfd *));
215 long MY (canonicalize_reloc)
216 PARAMS ((bfd *, sec_ptr, arelent **, asymbol **));
217
218 /* Since the hpux symbol table has nlist elements interspersed with
219 strings and we need to insert som strings for secondary symbols, we
220 give ourselves a little extra padding up front to account for
221 this. Note that for each non-secondary symbol we process, we gain
222 9 bytes of space for the discarded nlist element (one byte used for
223 null). SYM_EXTRA_BYTES is the extra space. */
224 #define SYM_EXTRA_BYTES 1024
225
226 /* Set parameters about this a.out file that are machine-dependent.
227 This routine is called from some_aout_object_p just before it returns. */
228 static const bfd_target *
229 MY (callback) (abfd)
230 bfd *abfd;
231 {
232 struct internal_exec *execp = exec_hdr (abfd);
233
234 /* Calculate the file positions of the parts of a newly read aout header */
235 obj_textsec (abfd)->size = N_TXTSIZE (*execp);
236
237 /* The virtual memory addresses of the sections */
238 obj_textsec (abfd)->vma = N_TXTADDR (*execp);
239 obj_datasec (abfd)->vma = N_DATADDR (*execp);
240 obj_bsssec (abfd)->vma = N_BSSADDR (*execp);
241
242 obj_textsec (abfd)->lma = obj_textsec (abfd)->vma;
243 obj_datasec (abfd)->lma = obj_datasec (abfd)->vma;
244 obj_bsssec (abfd)->lma = obj_bsssec (abfd)->vma;
245
246 /* The file offsets of the sections */
247 obj_textsec (abfd)->filepos = N_TXTOFF (*execp);
248 obj_datasec (abfd)->filepos = N_DATOFF (*execp);
249
250 /* The file offsets of the relocation info */
251 obj_textsec (abfd)->rel_filepos = N_TRELOFF (*execp);
252 obj_datasec (abfd)->rel_filepos = N_DRELOFF (*execp);
253
254 /* The file offsets of the string table and symbol table. */
255 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
256 obj_str_filepos (abfd) = N_STROFF (*execp);
257
258 /* Determine the architecture and machine type of the object file. */
259 #ifdef SET_ARCH_MACH
260 SET_ARCH_MACH (abfd, *execp);
261 #else
262 bfd_default_set_arch_mach (abfd, DEFAULT_ARCH, 0);
263 #endif
264
265 if (obj_aout_subformat (abfd) == gnu_encap_format)
266 {
267 /* The file offsets of the relocation info */
268 obj_textsec (abfd)->rel_filepos = N_GNU_TRELOFF (*execp);
269 obj_datasec (abfd)->rel_filepos = N_GNU_DRELOFF (*execp);
270
271 /* The file offsets of the string table and symbol table. */
272 obj_sym_filepos (abfd) = N_GNU_SYMOFF (*execp);
273 obj_str_filepos (abfd) = (obj_sym_filepos (abfd) + execp->a_syms);
274
275 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
276 bfd_get_symcount (abfd) = execp->a_syms / 12;
277 obj_symbol_entry_size (abfd) = 12;
278 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
279 }
280
281 return abfd->xvec;
282 }
283
284 extern bfd_boolean aout_32_write_syms
285 PARAMS ((bfd * abfd));
286
287 static bfd_boolean
288 MY (write_object_contents) (abfd)
289 bfd *abfd;
290 {
291 struct external_exec exec_bytes;
292 struct internal_exec *execp = exec_hdr (abfd);
293 bfd_size_type text_size; /* dummy vars */
294 file_ptr text_end;
295
296 memset (&exec_bytes, 0, sizeof (exec_bytes));
297
298 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
299
300 if (adata (abfd).magic == undecided_magic)
301 NAME (aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end);
302 execp->a_syms = 0;
303
304 execp->a_entry = bfd_get_start_address (abfd);
305
306 execp->a_trsize = ((obj_textsec (abfd)->reloc_count) *
307 obj_reloc_entry_size (abfd));
308 execp->a_drsize = ((obj_datasec (abfd)->reloc_count) *
309 obj_reloc_entry_size (abfd));
310
311 N_SET_MACHTYPE (*execp, 0xc);
312 N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags);
313
314 NAME (aout,swap_exec_header_out) (abfd, execp, &exec_bytes);
315
316 /* update fields not covered by default swap_exec_header_out */
317
318 /* this is really the sym table size but we store it in drelocs */
319 H_PUT_32 (abfd, (bfd_get_symcount (abfd) * 12), exec_bytes.e_drelocs);
320
321 if (bfd_seek (abfd, (file_ptr) 0, FALSE) != 0
322 || (bfd_bwrite ((PTR) &exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, abfd)
323 != EXEC_BYTES_SIZE))
324 return FALSE;
325
326 /* Write out the symbols, and then the relocs. We must write out
327 the symbols first so that we know the symbol indices. */
328
329 if (bfd_get_symcount (abfd) != 0)
330 {
331 /* Skip the relocs to where we want to put the symbols. */
332 if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp) + execp->a_drsize),
333 SEEK_SET) != 0)
334 return FALSE;
335 }
336
337 if (!MY (write_syms) (abfd))
338 return FALSE;
339
340 if (bfd_get_symcount (abfd) != 0)
341 {
342 if (bfd_seek (abfd, (file_ptr) N_TRELOFF (*execp), SEEK_CUR) != 0)
343 return FALSE;
344 if (!NAME (aout,squirt_out_relocs) (abfd, obj_textsec (abfd)))
345 return FALSE;
346 if (bfd_seek (abfd, (file_ptr) N_DRELOFF (*execp), SEEK_CUR) != 0)
347 return FALSE;
348 if (!NAME (aout,squirt_out_relocs) (abfd, obj_datasec (abfd)))
349 return FALSE;
350 }
351
352 return TRUE;
353 }
354
355 /* convert the hp symbol type to be the same as aout64.h usage so we */
356 /* can piggyback routines in aoutx.h. */
357
358 static void
convert_sym_type(sym_pointer,cache_ptr,abfd)359 convert_sym_type (sym_pointer, cache_ptr, abfd)
360 struct external_nlist *sym_pointer ATTRIBUTE_UNUSED;
361 aout_symbol_type *cache_ptr;
362 bfd *abfd ATTRIBUTE_UNUSED;
363 {
364 int name_type;
365 int new_type;
366
367 name_type = (cache_ptr->type);
368 new_type = 0;
369
370 if ((name_type & HP_SYMTYPE_ALIGN) != 0)
371 {
372 /* iou_error ("aligned symbol encountered: %s", name);*/
373 name_type = 0;
374 }
375
376 if (name_type == HP_SYMTYPE_FILENAME)
377 new_type = N_FN;
378 else
379 {
380 switch (name_type & HP_SYMTYPE_TYPE)
381 {
382 case HP_SYMTYPE_UNDEFINED:
383 new_type = N_UNDF;
384 break;
385
386 case HP_SYMTYPE_ABSOLUTE:
387 new_type = N_ABS;
388 break;
389
390 case HP_SYMTYPE_TEXT:
391 new_type = N_TEXT;
392 break;
393
394 case HP_SYMTYPE_DATA:
395 new_type = N_DATA;
396 break;
397
398 case HP_SYMTYPE_BSS:
399 new_type = N_BSS;
400 break;
401
402 case HP_SYMTYPE_COMMON:
403 new_type = N_COMM;
404 break;
405
406 default:
407 abort ();
408 break;
409 }
410 if (name_type & HP_SYMTYPE_EXTERNAL)
411 new_type |= N_EXT;
412
413 if (name_type & HP_SECONDARY_SYMBOL)
414 {
415 switch (new_type)
416 {
417 default:
418 abort ();
419 case N_UNDF | N_EXT:
420 /* If the value is nonzero, then just treat this as a
421 common symbol. I don't know if this is correct in
422 all cases, but it is more correct than treating it as
423 a weak undefined symbol. */
424 if (cache_ptr->symbol.value == 0)
425 new_type = N_WEAKU;
426 break;
427 case N_ABS | N_EXT:
428 new_type = N_WEAKA;
429 break;
430 case N_TEXT | N_EXT:
431 new_type = N_WEAKT;
432 break;
433 case N_DATA | N_EXT:
434 new_type = N_WEAKD;
435 break;
436 case N_BSS | N_EXT:
437 new_type = N_WEAKB;
438 break;
439 }
440 }
441 }
442 cache_ptr->type = new_type;
443
444 }
445
446 /*
447 DESCRIPTION
448 Swaps the information in an executable header taken from a raw
449 byte stream memory image, into the internal exec_header
450 structure.
451 */
452
453 void
454 NAME (aout,swap_exec_header_in) (abfd, raw_bytes, execp)
455 bfd *abfd;
456 struct external_exec *raw_bytes;
457 struct internal_exec *execp;
458 {
459 struct external_exec *bytes = (struct external_exec *) raw_bytes;
460
461 /* The internal_exec structure has some fields that are unused in this
462 configuration (IE for i960), so ensure that all such uninitialized
463 fields are zero'd out. There are places where two of these structs
464 are memcmp'd, and thus the contents do matter. */
465 memset (execp, 0, sizeof (struct internal_exec));
466 /* Now fill in fields in the execp, from the bytes in the raw data. */
467 execp->a_info = H_GET_32 (abfd, bytes->e_info);
468 execp->a_text = GET_WORD (abfd, bytes->e_text);
469 execp->a_data = GET_WORD (abfd, bytes->e_data);
470 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
471 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
472 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
473 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
474 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
475
476 /***************************************************************/
477 /* check the header to see if it was generated by a bfd output */
478 /* this is detected rather bizarrely by requiring a bunch of */
479 /* header fields to be zero and an old unused field (now used) */
480 /* to be set. */
481 /***************************************************************/
482 do
483 {
484 long syms;
485 struct aout_data_struct *rawptr;
486 bfd_size_type amt;
487
488 if (H_GET_32 (abfd, bytes->e_passize) != 0)
489 break;
490 if (H_GET_32 (abfd, bytes->e_syms) != 0)
491 break;
492 if (H_GET_32 (abfd, bytes->e_supsize) != 0)
493 break;
494
495 syms = H_GET_32 (abfd, bytes->e_drelocs);
496 if (syms == 0)
497 break;
498
499 /* OK, we've passed the test as best as we can determine */
500 execp->a_syms = syms;
501
502 /* allocate storage for where we will store this result */
503 amt = sizeof (*rawptr);
504 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt);
505
506 if (rawptr == NULL)
507 return;
508 abfd->tdata.aout_data = rawptr;
509 obj_aout_subformat (abfd) = gnu_encap_format;
510 }
511 while (0);
512 }
513
514 /* The hp symbol table is a bit different than other a.out targets. Instead
515 of having an array of nlist items and an array of strings, hp's format
516 has them mixed together in one structure. In addition, the strings are
517 not null terminated. It looks something like this:
518
519 nlist element 1
520 string1
521 nlist element 2
522 string2
523 ...
524
525 The whole symbol table is read as one chunk and then we march thru it
526 and convert it to canonical form. As we march thru the table, we copy
527 the nlist data into the internal form and we compact the strings and null
528 terminate them, using storage from the already allocated symbol table:
529
530 string1
531 null
532 string2
533 null
534 ...
535 */
536
537 bfd_boolean
538 MY (slurp_symbol_table) (abfd)
539 bfd *abfd;
540 {
541 bfd_size_type symbol_bytes;
542 struct external_nlist *syms;
543 struct external_nlist *sym_pointer;
544 struct external_nlist *sym_end;
545 char *strings;
546 aout_symbol_type *cached;
547 unsigned num_syms = 0;
548 bfd_size_type amt;
549
550 /* If there's no work to be done, don't do any */
551 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL)
552 return TRUE;
553 symbol_bytes = exec_hdr (abfd)->a_syms;
554
555 amt = symbol_bytes + SYM_EXTRA_BYTES;
556 strings = (char *) bfd_alloc (abfd, amt);
557 if (!strings)
558 return FALSE;
559 syms = (struct external_nlist *) (strings + SYM_EXTRA_BYTES);
560 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
561 || bfd_bread ((PTR) syms, symbol_bytes, abfd) != symbol_bytes)
562 {
563 bfd_release (abfd, syms);
564 return FALSE;
565 }
566
567 sym_end = (struct external_nlist *) (((char *) syms) + symbol_bytes);
568
569 /* first, march thru the table and figure out how many symbols there are */
570 for (sym_pointer = syms; sym_pointer < sym_end; sym_pointer++, num_syms++)
571 {
572 /* skip over the embedded symbol. */
573 sym_pointer = (struct external_nlist *) (((char *) sym_pointer) +
574 sym_pointer->e_length[0]);
575 }
576
577 /* now that we know the symbol count, update the bfd header */
578 bfd_get_symcount (abfd) = num_syms;
579
580 amt = num_syms;
581 amt *= sizeof (aout_symbol_type);
582 cached = (aout_symbol_type *) bfd_zalloc (abfd, amt);
583 if (cached == NULL && num_syms != 0)
584 return FALSE;
585
586 /* as we march thru the hp symbol table, convert it into a list of
587 null terminated strings to hold the symbol names. Make sure any
588 assignment to the strings pointer is done after we're thru using
589 the nlist so we don't overwrite anything important. */
590
591 /* OK, now walk the new symtable, caching symbol properties */
592 {
593 aout_symbol_type *cache_ptr = cached;
594 aout_symbol_type cache_save;
595 /* Run through table and copy values */
596 for (sym_pointer = syms, cache_ptr = cached;
597 sym_pointer < sym_end; sym_pointer++, cache_ptr++)
598 {
599 unsigned int length;
600 cache_ptr->symbol.the_bfd = abfd;
601 cache_ptr->symbol.value = GET_SWORD (abfd, sym_pointer->e_value);
602 cache_ptr->desc = bfd_get_16 (abfd, sym_pointer->e_almod);
603 cache_ptr->type = bfd_get_8 (abfd, sym_pointer->e_type);
604 cache_ptr->symbol.udata.p = NULL;
605 length = bfd_get_8 (abfd, sym_pointer->e_length);
606 cache_ptr->other = length; /* other not used, save length here */
607
608 cache_save = *cache_ptr;
609 convert_sym_type (sym_pointer, cache_ptr, abfd);
610 if (!translate_from_native_sym_flags (abfd, cache_ptr))
611 return FALSE;
612
613 /********************************************************/
614 /* for hpux, the 'length' value indicates the length of */
615 /* the symbol name which follows the nlist entry. */
616 /********************************************************/
617 if (length)
618 {
619 /**************************************************************/
620 /* the hp string is not null terminated so we create a new one*/
621 /* by copying the string to overlap the just vacated nlist */
622 /* structure before it in memory. */
623 /**************************************************************/
624 cache_ptr->symbol.name = strings;
625 memcpy (strings, sym_pointer + 1, length);
626 strings[length] = '\0';
627 strings += length + 1;
628 }
629 else
630 cache_ptr->symbol.name = (char *) NULL;
631
632 /* skip over the embedded symbol. */
633 sym_pointer = (struct external_nlist *) (((char *) sym_pointer) +
634 length);
635 }
636 }
637
638 obj_aout_symbols (abfd) = cached;
639
640 return TRUE;
641 }
642
643 void
644 MY (swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
645 bfd *abfd;
646 struct hp300hpux_reloc *bytes;
647 arelent *cache_ptr;
648 asymbol **symbols;
649 bfd_size_type symcount ATTRIBUTE_UNUSED;
650 {
651 int r_index;
652 int r_extern = 0;
653 unsigned int r_length;
654 int r_pcrel = 0;
655 struct aoutdata *su = &(abfd->tdata.aout_data->a);
656
657 cache_ptr->address = H_GET_32 (abfd, bytes->r_address);
658 r_index = H_GET_16 (abfd, bytes->r_index);
659
660 switch (bytes->r_type[0])
661 {
662 case HP_RSEGMENT_TEXT:
663 r_index = N_TEXT;
664 break;
665 case HP_RSEGMENT_DATA:
666 r_index = N_DATA;
667 break;
668 case HP_RSEGMENT_BSS:
669 r_index = N_BSS;
670 break;
671 case HP_RSEGMENT_EXTERNAL:
672 r_extern = 1;
673 break;
674 case HP_RSEGMENT_PCREL:
675 r_extern = 1;
676 r_pcrel = 1;
677 break;
678 case HP_RSEGMENT_RDLT:
679 break;
680 case HP_RSEGMENT_RPLT:
681 break;
682 case HP_RSEGMENT_NOOP:
683 break;
684 default:
685 abort ();
686 break;
687 }
688
689 switch (bytes->r_length[0])
690 {
691 case HP_RLENGTH_BYTE:
692 r_length = 0;
693 break;
694 case HP_RLENGTH_WORD:
695 r_length = 1;
696 break;
697 case HP_RLENGTH_LONG:
698 r_length = 2;
699 break;
700 default:
701 abort ();
702 break;
703 }
704
705 cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel;
706 /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */
707
708 /* This macro uses the r_index value computed above */
709 if (r_pcrel && r_extern)
710 {
711 /* The GNU linker assumes any offset from beginning of section */
712 /* is already incorporated into the image while the HP linker */
713 /* adds this in later. Add it in now... */
714 MOVE_ADDRESS (-cache_ptr->address);
715 }
716 else
717 {
718 MOVE_ADDRESS (0);
719 }
720 }
721
722 bfd_boolean
723 MY (slurp_reloc_table) (abfd, asect, symbols)
724 bfd *abfd;
725 sec_ptr asect;
726 asymbol **symbols;
727 {
728 bfd_size_type count;
729 bfd_size_type reloc_size;
730 PTR relocs;
731 arelent *reloc_cache;
732 size_t each_size;
733 struct hp300hpux_reloc *rptr;
734 unsigned int counter;
735 arelent *cache_ptr;
736
737 if (asect->relocation)
738 return TRUE;
739
740 if (asect->flags & SEC_CONSTRUCTOR)
741 return TRUE;
742
743 if (asect == obj_datasec (abfd))
744 {
745 reloc_size = exec_hdr (abfd)->a_drsize;
746 goto doit;
747 }
748
749 if (asect == obj_textsec (abfd))
750 {
751 reloc_size = exec_hdr (abfd)->a_trsize;
752 goto doit;
753 }
754
755 bfd_set_error (bfd_error_invalid_operation);
756 return FALSE;
757
758 doit:
759 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
760 return FALSE;
761 each_size = obj_reloc_entry_size (abfd);
762
763 count = reloc_size / each_size;
764
765 reloc_cache = (arelent *) bfd_zalloc (abfd, count * sizeof (arelent));
766 if (!reloc_cache && count != 0)
767 return FALSE;
768
769 relocs = (PTR) bfd_alloc (abfd, reloc_size);
770 if (!relocs && reloc_size != 0)
771 {
772 bfd_release (abfd, reloc_cache);
773 return FALSE;
774 }
775
776 if (bfd_bread (relocs, reloc_size, abfd) != reloc_size)
777 {
778 bfd_release (abfd, relocs);
779 bfd_release (abfd, reloc_cache);
780 return FALSE;
781 }
782
783 rptr = (struct hp300hpux_reloc *) relocs;
784 counter = 0;
785 cache_ptr = reloc_cache;
786
787 for (; counter < count; counter++, rptr++, cache_ptr++)
788 {
789 MY (swap_std_reloc_in) (abfd, rptr, cache_ptr, symbols,
790 (bfd_size_type) bfd_get_symcount (abfd));
791 }
792
793 bfd_release (abfd, relocs);
794 asect->relocation = reloc_cache;
795 asect->reloc_count = count;
796 return TRUE;
797 }
798
799 /************************************************************************/
800 /* The following functions are identical to functions in aoutx.h except */
801 /* they refer to MY(func) rather than NAME(aout,func) and they also */
802 /* call aout_32 versions if the input file was generated by gcc */
803 /************************************************************************/
804
805 long aout_32_canonicalize_symtab
806 PARAMS ((bfd * abfd, asymbol ** location));
807 long aout_32_get_symtab_upper_bound
808 PARAMS ((bfd * abfd));
809 long aout_32_canonicalize_reloc
810 PARAMS ((bfd * abfd, sec_ptr section, arelent ** relptr,
811 asymbol ** symbols));
812
813 long
814 MY (canonicalize_symtab) (abfd, location)
815 bfd *abfd;
816 asymbol **location;
817 {
818 unsigned int counter = 0;
819 aout_symbol_type *symbase;
820
821 if (obj_aout_subformat (abfd) == gnu_encap_format)
822 return aout_32_canonicalize_symtab (abfd, location);
823
824 if (!MY (slurp_symbol_table) (abfd))
825 return -1;
826
827 for (symbase = obj_aout_symbols (abfd); counter++ < bfd_get_symcount (abfd);)
828 *(location++) = (asymbol *) (symbase++);
829 *location++ = 0;
830 return bfd_get_symcount (abfd);
831 }
832
833 long
834 MY (get_symtab_upper_bound) (abfd)
835 bfd *abfd;
836 {
837 if (obj_aout_subformat (abfd) == gnu_encap_format)
838 return aout_32_get_symtab_upper_bound (abfd);
839 if (!MY (slurp_symbol_table) (abfd))
840 return -1;
841
842 return (bfd_get_symcount (abfd) + 1) * (sizeof (aout_symbol_type *));
843 }
844
845 long
846 MY (canonicalize_reloc) (abfd, section, relptr, symbols)
847 bfd *abfd;
848 sec_ptr section;
849 arelent **relptr;
850 asymbol **symbols;
851 {
852 arelent *tblptr = section->relocation;
853 unsigned int count;
854 if (obj_aout_subformat (abfd) == gnu_encap_format)
855 return aout_32_canonicalize_reloc (abfd, section, relptr, symbols);
856
857 if (!(tblptr || MY (slurp_reloc_table) (abfd, section, symbols)))
858 return -1;
859
860 if (section->flags & SEC_CONSTRUCTOR)
861 {
862 arelent_chain *chain = section->constructor_chain;
863 for (count = 0; count < section->reloc_count; count++)
864 {
865 *relptr++ = &chain->relent;
866 chain = chain->next;
867 }
868 }
869 else
870 {
871 tblptr = section->relocation;
872
873 for (count = 0; count++ < section->reloc_count;)
874 {
875 *relptr++ = tblptr++;
876 }
877 }
878 *relptr = 0;
879
880 return section->reloc_count;
881 }
882
883 #include "aout-target.h"
884