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* Makefile.am ($(srcdir)/bfd-in2.h): Add dummy command to force
[binutils-gdb.git] / bfd / coffcode.h
1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright 1990, 91, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
3 Written by Cygnus Support.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20
21 /*
22 Most of this hacked by Steve Chamberlain,
23 sac@cygnus.com
24 */
25 /*
26
27 SECTION
28 coff backends
29
30 BFD supports a number of different flavours of coff format.
31 The major differences between formats are the sizes and
32 alignments of fields in structures on disk, and the occasional
33 extra field.
34
35 Coff in all its varieties is implemented with a few common
36 files and a number of implementation specific files. For
37 example, The 88k bcs coff format is implemented in the file
38 @file{coff-m88k.c}. This file @code{#include}s
39 @file{coff/m88k.h} which defines the external structure of the
40 coff format for the 88k, and @file{coff/internal.h} which
41 defines the internal structure. @file{coff-m88k.c} also
42 defines the relocations used by the 88k format
43 @xref{Relocations}.
44
45 The Intel i960 processor version of coff is implemented in
46 @file{coff-i960.c}. This file has the same structure as
47 @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
48 rather than @file{coff-m88k.h}.
49
50 SUBSECTION
51 Porting to a new version of coff
52
53 The recommended method is to select from the existing
54 implementations the version of coff which is most like the one
55 you want to use. For example, we'll say that i386 coff is
56 the one you select, and that your coff flavour is called foo.
57 Copy @file{i386coff.c} to @file{foocoff.c}, copy
58 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
59 and add the lines to @file{targets.c} and @file{Makefile.in}
60 so that your new back end is used. Alter the shapes of the
61 structures in @file{../include/coff/foo.h} so that they match
62 what you need. You will probably also have to add
63 @code{#ifdef}s to the code in @file{coff/internal.h} and
64 @file{coffcode.h} if your version of coff is too wild.
65
66 You can verify that your new BFD backend works quite simply by
67 building @file{objdump} from the @file{binutils} directory,
68 and making sure that its version of what's going on and your
69 host system's idea (assuming it has the pretty standard coff
70 dump utility, usually called @code{att-dump} or just
71 @code{dump}) are the same. Then clean up your code, and send
72 what you've done to Cygnus. Then your stuff will be in the
73 next release, and you won't have to keep integrating it.
74
75 SUBSECTION
76 How the coff backend works
77
78 SUBSUBSECTION
79 File layout
80
81 The Coff backend is split into generic routines that are
82 applicable to any Coff target and routines that are specific
83 to a particular target. The target-specific routines are
84 further split into ones which are basically the same for all
85 Coff targets except that they use the external symbol format
86 or use different values for certain constants.
87
88 The generic routines are in @file{coffgen.c}. These routines
89 work for any Coff target. They use some hooks into the target
90 specific code; the hooks are in a @code{bfd_coff_backend_data}
91 structure, one of which exists for each target.
92
93 The essentially similar target-specific routines are in
94 @file{coffcode.h}. This header file includes executable C code.
95 The various Coff targets first include the appropriate Coff
96 header file, make any special defines that are needed, and
97 then include @file{coffcode.h}.
98
99 Some of the Coff targets then also have additional routines in
100 the target source file itself.
101
102 For example, @file{coff-i960.c} includes
103 @file{coff/internal.h} and @file{coff/i960.h}. It then
104 defines a few constants, such as @code{I960}, and includes
105 @file{coffcode.h}. Since the i960 has complex relocation
106 types, @file{coff-i960.c} also includes some code to
107 manipulate the i960 relocs. This code is not in
108 @file{coffcode.h} because it would not be used by any other
109 target.
110
111 SUBSUBSECTION
112 Bit twiddling
113
114 Each flavour of coff supported in BFD has its own header file
115 describing the external layout of the structures. There is also
116 an internal description of the coff layout, in
117 @file{coff/internal.h}. A major function of the
118 coff backend is swapping the bytes and twiddling the bits to
119 translate the external form of the structures into the normal
120 internal form. This is all performed in the
121 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
122 elements are different sizes between different versions of
123 coff; it is the duty of the coff version specific include file
124 to override the definitions of various packing routines in
125 @file{coffcode.h}. E.g., the size of line number entry in coff is
126 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
127 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
128 correct one. No doubt, some day someone will find a version of
129 coff which has a varying field size not catered to at the
130 moment. To port BFD, that person will have to add more @code{#defines}.
131 Three of the bit twiddling routines are exported to
132 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
133 and @code{coff_swap_linno_in}. @code{GDB} reads the symbol
134 table on its own, but uses BFD to fix things up. More of the
135 bit twiddlers are exported for @code{gas};
136 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
137 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
138 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
139 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
140 of all the symbol table and reloc drudgery itself, thereby
141 saving the internal BFD overhead, but uses BFD to swap things
142 on the way out, making cross ports much safer. Doing so also
143 allows BFD (and thus the linker) to use the same header files
144 as @code{gas}, which makes one avenue to disaster disappear.
145
146 SUBSUBSECTION
147 Symbol reading
148
149 The simple canonical form for symbols used by BFD is not rich
150 enough to keep all the information available in a coff symbol
151 table. The back end gets around this problem by keeping the original
152 symbol table around, "behind the scenes".
153
154 When a symbol table is requested (through a call to
155 @code{bfd_canonicalize_symtab}), a request gets through to
156 @code{coff_get_normalized_symtab}. This reads the symbol table from
157 the coff file and swaps all the structures inside into the
158 internal form. It also fixes up all the pointers in the table
159 (represented in the file by offsets from the first symbol in
160 the table) into physical pointers to elements in the new
161 internal table. This involves some work since the meanings of
162 fields change depending upon context: a field that is a
163 pointer to another structure in the symbol table at one moment
164 may be the size in bytes of a structure at the next. Another
165 pass is made over the table. All symbols which mark file names
166 (<<C_FILE>> symbols) are modified so that the internal
167 string points to the value in the auxent (the real filename)
168 rather than the normal text associated with the symbol
169 (@code{".file"}).
170
171 At this time the symbol names are moved around. Coff stores
172 all symbols less than nine characters long physically
173 within the symbol table; longer strings are kept at the end of
174 the file in the string table. This pass moves all strings
175 into memory and replaces them with pointers to the strings.
176
177
178 The symbol table is massaged once again, this time to create
179 the canonical table used by the BFD application. Each symbol
180 is inspected in turn, and a decision made (using the
181 @code{sclass} field) about the various flags to set in the
182 @code{asymbol}. @xref{Symbols}. The generated canonical table
183 shares strings with the hidden internal symbol table.
184
185 Any linenumbers are read from the coff file too, and attached
186 to the symbols which own the functions the linenumbers belong to.
187
188 SUBSUBSECTION
189 Symbol writing
190
191 Writing a symbol to a coff file which didn't come from a coff
192 file will lose any debugging information. The @code{asymbol}
193 structure remembers the BFD from which the symbol was taken, and on
194 output the back end makes sure that the same destination target as
195 source target is present.
196
197 When the symbols have come from a coff file then all the
198 debugging information is preserved.
199
200 Symbol tables are provided for writing to the back end in a
201 vector of pointers to pointers. This allows applications like
202 the linker to accumulate and output large symbol tables
203 without having to do too much byte copying.
204
205 This function runs through the provided symbol table and
206 patches each symbol marked as a file place holder
207 (@code{C_FILE}) to point to the next file place holder in the
208 list. It also marks each @code{offset} field in the list with
209 the offset from the first symbol of the current symbol.
210
211 Another function of this procedure is to turn the canonical
212 value form of BFD into the form used by coff. Internally, BFD
213 expects symbol values to be offsets from a section base; so a
214 symbol physically at 0x120, but in a section starting at
215 0x100, would have the value 0x20. Coff expects symbols to
216 contain their final value, so symbols have their values
217 changed at this point to reflect their sum with their owning
218 section. This transformation uses the
219 <<output_section>> field of the @code{asymbol}'s
220 @code{asection} @xref{Sections}.
221
222 o <<coff_mangle_symbols>>
223
224 This routine runs though the provided symbol table and uses
225 the offsets generated by the previous pass and the pointers
226 generated when the symbol table was read in to create the
227 structured hierachy required by coff. It changes each pointer
228 to a symbol into the index into the symbol table of the asymbol.
229
230 o <<coff_write_symbols>>
231
232 This routine runs through the symbol table and patches up the
233 symbols from their internal form into the coff way, calls the
234 bit twiddlers, and writes out the table to the file.
235
236 */
237
238 /*
239 INTERNAL_DEFINITION
240 coff_symbol_type
241
242 DESCRIPTION
243 The hidden information for an <<asymbol>> is described in a
244 <<combined_entry_type>>:
245
246 CODE_FRAGMENT
247 .
248 .typedef struct coff_ptr_struct
249 .{
250 .
251 . {* Remembers the offset from the first symbol in the file for
252 . this symbol. Generated by coff_renumber_symbols. *}
253 .unsigned int offset;
254 .
255 . {* Should the value of this symbol be renumbered. Used for
256 . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
257 .unsigned int fix_value : 1;
258 .
259 . {* Should the tag field of this symbol be renumbered.
260 . Created by coff_pointerize_aux. *}
261 .unsigned int fix_tag : 1;
262 .
263 . {* Should the endidx field of this symbol be renumbered.
264 . Created by coff_pointerize_aux. *}
265 .unsigned int fix_end : 1;
266 .
267 . {* Should the x_csect.x_scnlen field be renumbered.
268 . Created by coff_pointerize_aux. *}
269 .unsigned int fix_scnlen : 1;
270 .
271 . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
272 . index into the line number entries. Set by
273 . coff_slurp_symbol_table. *}
274 .unsigned int fix_line : 1;
275 .
276 . {* The container for the symbol structure as read and translated
277 . from the file. *}
278 .
279 .union {
280 . union internal_auxent auxent;
281 . struct internal_syment syment;
282 . } u;
283 .} combined_entry_type;
284 .
285 .
286 .{* Each canonical asymbol really looks like this: *}
287 .
288 .typedef struct coff_symbol_struct
289 .{
290 . {* The actual symbol which the rest of BFD works with *}
291 .asymbol symbol;
292 .
293 . {* A pointer to the hidden information for this symbol *}
294 .combined_entry_type *native;
295 .
296 . {* A pointer to the linenumber information for this symbol *}
297 .struct lineno_cache_entry *lineno;
298 .
299 . {* Have the line numbers been relocated yet ? *}
300 .boolean done_lineno;
301 .} coff_symbol_type;
302
303
304 */
305
306 #ifdef COFF_WITH_PE
307 #include "peicode.h"
308 #else
309 #include "coffswap.h"
310 #endif
311
312 #define STRING_SIZE_SIZE (4)
313
314 static long sec_to_styp_flags PARAMS ((const char *, flagword));
315 static flagword styp_to_sec_flags PARAMS ((bfd *, PTR, const char *));
316 static boolean coff_bad_format_hook PARAMS ((bfd *, PTR));
317 static boolean coff_new_section_hook PARAMS ((bfd *, asection *));
318 static boolean coff_set_arch_mach_hook PARAMS ((bfd *, PTR));
319 static boolean coff_write_relocs PARAMS ((bfd *, int));
320 static boolean coff_set_flags
321 PARAMS ((bfd *, unsigned int *, unsigned short *));
322 static boolean coff_set_arch_mach
323 PARAMS ((bfd *, enum bfd_architecture, unsigned long));
324 static boolean coff_compute_section_file_positions PARAMS ((bfd *));
325 static boolean coff_write_object_contents PARAMS ((bfd *));
326 static boolean coff_set_section_contents
327 PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
328 static PTR buy_and_read PARAMS ((bfd *, file_ptr, int, size_t));
329 static boolean coff_slurp_line_table PARAMS ((bfd *, asection *));
330 static boolean coff_slurp_symbol_table PARAMS ((bfd *));
331 static boolean coff_slurp_reloc_table PARAMS ((bfd *, asection *, asymbol **));
332 static long coff_canonicalize_reloc
333 PARAMS ((bfd *, asection *, arelent **, asymbol **));
334 #ifndef coff_mkobject_hook
335 static PTR coff_mkobject_hook PARAMS ((bfd *, PTR, PTR));
336 #endif
337 \f
338 /* void warning(); */
339
340 /*
341 * Return a word with STYP_* (scnhdr.s_flags) flags set to represent the
342 * incoming SEC_* flags. The inverse of this function is styp_to_sec_flags().
343 * NOTE: If you add to/change this routine, you should mirror the changes
344 * in styp_to_sec_flags().
345 */
346 static long
347 sec_to_styp_flags (sec_name, sec_flags)
348 CONST char *sec_name;
349 flagword sec_flags;
350 {
351 long styp_flags = 0;
352
353 if (!strcmp (sec_name, _TEXT))
354 {
355 styp_flags = STYP_TEXT;
356 }
357 else if (!strcmp (sec_name, _DATA))
358 {
359 styp_flags = STYP_DATA;
360 }
361 else if (!strcmp (sec_name, _BSS))
362 {
363 styp_flags = STYP_BSS;
364 #ifdef _COMMENT
365 }
366 else if (!strcmp (sec_name, _COMMENT))
367 {
368 styp_flags = STYP_INFO;
369 #endif /* _COMMENT */
370 #ifdef _LIB
371 }
372 else if (!strcmp (sec_name, _LIB))
373 {
374 styp_flags = STYP_LIB;
375 #endif /* _LIB */
376 #ifdef _LIT
377 }
378 else if (!strcmp (sec_name, _LIT))
379 {
380 styp_flags = STYP_LIT;
381 #endif /* _LIT */
382 }
383 else if (!strcmp (sec_name, ".debug"))
384 {
385 #ifdef STYP_DEBUG
386 styp_flags = STYP_DEBUG;
387 #else
388 styp_flags = STYP_INFO;
389 #endif
390 }
391 else if (!strncmp (sec_name, ".stab", 5))
392 {
393 styp_flags = STYP_INFO;
394 }
395 #ifdef COFF_WITH_PE
396 else if (!strcmp (sec_name, ".edata"))
397 {
398 styp_flags = STYP_DATA;
399 }
400 #endif
401 #ifdef RS6000COFF_C
402 else if (!strcmp (sec_name, _PAD))
403 {
404 styp_flags = STYP_PAD;
405 }
406 else if (!strcmp (sec_name, _LOADER))
407 {
408 styp_flags = STYP_LOADER;
409 }
410 #endif
411 /* Try and figure out what it should be */
412 else if (sec_flags & SEC_CODE)
413 {
414 styp_flags = STYP_TEXT;
415 }
416 else if (sec_flags & SEC_DATA)
417 {
418 styp_flags = STYP_DATA;
419 }
420 else if (sec_flags & SEC_READONLY)
421 {
422 #ifdef STYP_LIT /* 29k readonly text/data section */
423 styp_flags = STYP_LIT;
424 #else
425 styp_flags = STYP_TEXT;
426 #endif /* STYP_LIT */
427 }
428 else if (sec_flags & SEC_LOAD)
429 {
430 styp_flags = STYP_TEXT;
431 }
432 else if (sec_flags & SEC_ALLOC)
433 {
434 styp_flags = STYP_BSS;
435 }
436
437 #ifdef STYP_NOLOAD
438 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
439 styp_flags |= STYP_NOLOAD;
440 #endif
441
442 #ifdef COFF_WITH_PE
443 if (sec_flags & SEC_LINK_ONCE)
444 styp_flags |= IMAGE_SCN_LNK_COMDAT;
445 #endif
446
447 return (styp_flags);
448 }
449 /*
450 * Return a word with SEC_* flags set to represent the incoming
451 * STYP_* flags (from scnhdr.s_flags). The inverse of this
452 * function is sec_to_styp_flags().
453 * NOTE: If you add to/change this routine, you should mirror the changes
454 * in sec_to_styp_flags().
455 */
456 static flagword
457 styp_to_sec_flags (abfd, hdr, name)
458 bfd *abfd;
459 PTR hdr;
460 const char *name;
461 {
462 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
463 long styp_flags = internal_s->s_flags;
464 flagword sec_flags = 0;
465
466 #ifdef STYP_NOLOAD
467 if (styp_flags & STYP_NOLOAD)
468 {
469 sec_flags |= SEC_NEVER_LOAD;
470 }
471 #endif /* STYP_NOLOAD */
472
473 /* For 386 COFF, at least, an unloadable text or data section is
474 actually a shared library section. */
475 if (styp_flags & STYP_TEXT)
476 {
477 if (sec_flags & SEC_NEVER_LOAD)
478 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
479 else
480 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
481 }
482 else if (styp_flags & STYP_DATA)
483 {
484 if (sec_flags & SEC_NEVER_LOAD)
485 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
486 else
487 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
488 }
489 else if (styp_flags & STYP_BSS)
490 {
491 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
492 if (sec_flags & SEC_NEVER_LOAD)
493 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
494 else
495 #endif
496 sec_flags |= SEC_ALLOC;
497 }
498 else if (styp_flags & STYP_INFO)
499 {
500 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
501 defined. coff_compute_section_file_positions uses
502 COFF_PAGE_SIZE to ensure that the low order bits of the
503 section VMA and the file offset match. If we don't know
504 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
505 and demand page loading of the file will fail. */
506 #if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS)
507 sec_flags |= SEC_DEBUGGING;
508 #endif
509 }
510 else if (styp_flags & STYP_PAD)
511 {
512 sec_flags = 0;
513 }
514 else if (strcmp (name, _TEXT) == 0)
515 {
516 if (sec_flags & SEC_NEVER_LOAD)
517 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
518 else
519 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
520 }
521 else if (strcmp (name, _DATA) == 0)
522 {
523 if (sec_flags & SEC_NEVER_LOAD)
524 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
525 else
526 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
527 }
528 else if (strcmp (name, _BSS) == 0)
529 {
530 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
531 if (sec_flags & SEC_NEVER_LOAD)
532 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
533 else
534 #endif
535 sec_flags |= SEC_ALLOC;
536 }
537 else if (strcmp (name, ".debug") == 0
538 #ifdef _COMMENT
539 || strcmp (name, _COMMENT) == 0
540 #endif
541 || strncmp (name, ".stab", 5) == 0)
542 {
543 #ifdef COFF_PAGE_SIZE
544 sec_flags |= SEC_DEBUGGING;
545 #endif
546 }
547 #ifdef _LIB
548 else if (strcmp (name, _LIB) == 0)
549 ;
550 #endif
551 #ifdef _LIT
552 else if (strcmp (name, _LIT) == 0)
553 {
554 sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY;
555 }
556 #endif
557 else
558 {
559 sec_flags |= SEC_ALLOC | SEC_LOAD;
560 }
561
562 #ifdef STYP_LIT /* A29k readonly text/data section type */
563 if ((styp_flags & STYP_LIT) == STYP_LIT)
564 {
565 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
566 }
567 #endif /* STYP_LIT */
568 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
569 if (styp_flags & STYP_OTHER_LOAD)
570 {
571 sec_flags = (SEC_LOAD | SEC_ALLOC);
572 }
573 #endif /* STYP_SDATA */
574
575 #ifdef COFF_WITH_PE
576 if (styp_flags & IMAGE_SCN_LNK_REMOVE)
577 sec_flags |= SEC_EXCLUDE;
578
579 if (styp_flags & IMAGE_SCN_LNK_COMDAT)
580 {
581 sec_flags |= SEC_LINK_ONCE;
582
583 /* Unfortunately, the PE format stores essential information in
584 the symbol table, of all places. We need to extract that
585 information now, so that objdump and the linker will know how
586 to handle the section without worrying about the symbols. We
587 can't call slurp_symtab, because the linker doesn't want the
588 swapped symbols. */
589
590 if (_bfd_coff_get_external_symbols (abfd))
591 {
592 bfd_byte *esym, *esymend;
593
594 esym = (bfd_byte *) obj_coff_external_syms (abfd);
595 esymend = esym + obj_raw_syment_count (abfd) * SYMESZ;
596
597 while (esym < esymend)
598 {
599 struct internal_syment isym;
600
601 bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &isym);
602
603 if (sizeof (internal_s->s_name) > SYMNMLEN)
604 {
605 /* This case implies that the matching symbol name
606 will be in the string table. */
607 abort ();
608 }
609
610 if (isym.n_sclass == C_STAT
611 && isym.n_type == T_NULL
612 && isym.n_numaux == 1)
613 {
614 char buf[SYMNMLEN + 1];
615 const char *symname;
616
617 symname = _bfd_coff_internal_syment_name (abfd, &isym, buf);
618 if (symname == NULL)
619 abort ();
620
621 if (strcmp (name, symname) == 0)
622 {
623 union internal_auxent aux;
624
625 /* This is the section symbol. */
626
627 bfd_coff_swap_aux_in (abfd, (PTR) (esym + SYMESZ),
628 isym.n_type, isym.n_sclass,
629 0, isym.n_numaux, (PTR) &aux);
630
631 switch (aux.x_scn.x_comdat)
632 {
633 case IMAGE_COMDAT_SELECT_NODUPLICATES:
634 sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
635 break;
636
637 default:
638 case IMAGE_COMDAT_SELECT_ANY:
639 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
640 break;
641
642 case IMAGE_COMDAT_SELECT_SAME_SIZE:
643 sec_flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
644 break;
645
646 case IMAGE_COMDAT_SELECT_EXACT_MATCH:
647 sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
648 break;
649
650 case IMAGE_COMDAT_SELECT_ASSOCIATIVE:
651 /* FIXME: This is not currently implemented. */
652 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
653 break;
654 }
655
656 break;
657 }
658 }
659
660 esym += (isym.n_numaux + 1) * SYMESZ;
661 }
662 }
663 }
664 #endif
665
666 return (sec_flags);
667 }
668
669 #define get_index(symbol) ((symbol)->udata.i)
670
671 /*
672 INTERNAL_DEFINITION
673 bfd_coff_backend_data
674
675 CODE_FRAGMENT
676
677 Special entry points for gdb to swap in coff symbol table parts:
678 .typedef struct
679 .{
680 . void (*_bfd_coff_swap_aux_in) PARAMS ((
681 . bfd *abfd,
682 . PTR ext,
683 . int type,
684 . int class,
685 . int indaux,
686 . int numaux,
687 . PTR in));
688 .
689 . void (*_bfd_coff_swap_sym_in) PARAMS ((
690 . bfd *abfd ,
691 . PTR ext,
692 . PTR in));
693 .
694 . void (*_bfd_coff_swap_lineno_in) PARAMS ((
695 . bfd *abfd,
696 . PTR ext,
697 . PTR in));
698 .
699
700 Special entry points for gas to swap out coff parts:
701
702 . unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
703 . bfd *abfd,
704 . PTR in,
705 . int type,
706 . int class,
707 . int indaux,
708 . int numaux,
709 . PTR ext));
710 .
711 . unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
712 . bfd *abfd,
713 . PTR in,
714 . PTR ext));
715 .
716 . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
717 . bfd *abfd,
718 . PTR in,
719 . PTR ext));
720 .
721 . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
722 . bfd *abfd,
723 . PTR src,
724 . PTR dst));
725 .
726 . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
727 . bfd *abfd,
728 . PTR in,
729 . PTR out));
730 .
731 . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
732 . bfd *abfd,
733 . PTR in,
734 . PTR out));
735 .
736 . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
737 . bfd *abfd,
738 . PTR in,
739 . PTR out));
740 .
741
742 Special entry points for generic COFF routines to call target
743 dependent COFF routines:
744
745 . unsigned int _bfd_filhsz;
746 . unsigned int _bfd_aoutsz;
747 . unsigned int _bfd_scnhsz;
748 . unsigned int _bfd_symesz;
749 . unsigned int _bfd_auxesz;
750 . unsigned int _bfd_relsz;
751 . unsigned int _bfd_linesz;
752 . boolean _bfd_coff_long_filenames;
753 . boolean _bfd_coff_long_section_names;
754 . unsigned int _bfd_coff_default_section_alignment_power;
755 . void (*_bfd_coff_swap_filehdr_in) PARAMS ((
756 . bfd *abfd,
757 . PTR ext,
758 . PTR in));
759 . void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
760 . bfd *abfd,
761 . PTR ext,
762 . PTR in));
763 . void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
764 . bfd *abfd,
765 . PTR ext,
766 . PTR in));
767 . void (*_bfd_coff_swap_reloc_in) PARAMS ((
768 . bfd *abfd,
769 . PTR ext,
770 . PTR in));
771 . boolean (*_bfd_coff_bad_format_hook) PARAMS ((
772 . bfd *abfd,
773 . PTR internal_filehdr));
774 . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
775 . bfd *abfd,
776 . PTR internal_filehdr));
777 . PTR (*_bfd_coff_mkobject_hook) PARAMS ((
778 . bfd *abfd,
779 . PTR internal_filehdr,
780 . PTR internal_aouthdr));
781 . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
782 . bfd *abfd,
783 . PTR internal_scnhdr,
784 . const char *name));
785 . void (*_bfd_set_alignment_hook) PARAMS ((
786 . bfd *abfd,
787 . asection *sec,
788 . PTR internal_scnhdr));
789 . boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
790 . bfd *abfd));
791 . boolean (*_bfd_coff_symname_in_debug) PARAMS ((
792 . bfd *abfd,
793 . struct internal_syment *sym));
794 . boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
795 . bfd *abfd,
796 . combined_entry_type *table_base,
797 . combined_entry_type *symbol,
798 . unsigned int indaux,
799 . combined_entry_type *aux));
800 . boolean (*_bfd_coff_print_aux) PARAMS ((
801 . bfd *abfd,
802 . FILE *file,
803 . combined_entry_type *table_base,
804 . combined_entry_type *symbol,
805 . combined_entry_type *aux,
806 . unsigned int indaux));
807 . void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
808 . bfd *abfd,
809 . struct bfd_link_info *link_info,
810 . struct bfd_link_order *link_order,
811 . arelent *reloc,
812 . bfd_byte *data,
813 . unsigned int *src_ptr,
814 . unsigned int *dst_ptr));
815 . int (*_bfd_coff_reloc16_estimate) PARAMS ((
816 . bfd *abfd,
817 . asection *input_section,
818 . arelent *r,
819 . unsigned int shrink,
820 . struct bfd_link_info *link_info));
821 . boolean (*_bfd_coff_sym_is_global) PARAMS ((
822 . bfd *abfd,
823 . struct internal_syment *));
824 . boolean (*_bfd_coff_compute_section_file_positions) PARAMS ((
825 . bfd *abfd));
826 . boolean (*_bfd_coff_start_final_link) PARAMS ((
827 . bfd *output_bfd,
828 . struct bfd_link_info *info));
829 . boolean (*_bfd_coff_relocate_section) PARAMS ((
830 . bfd *output_bfd,
831 . struct bfd_link_info *info,
832 . bfd *input_bfd,
833 . asection *input_section,
834 . bfd_byte *contents,
835 . struct internal_reloc *relocs,
836 . struct internal_syment *syms,
837 . asection **sections));
838 . reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
839 . bfd *abfd,
840 . asection *sec,
841 . struct internal_reloc *rel,
842 . struct coff_link_hash_entry *h,
843 . struct internal_syment *sym,
844 . bfd_vma *addendp));
845 . boolean (*_bfd_coff_adjust_symndx) PARAMS ((
846 . bfd *obfd,
847 . struct bfd_link_info *info,
848 . bfd *ibfd,
849 . asection *sec,
850 . struct internal_reloc *reloc,
851 . boolean *adjustedp));
852 . boolean (*_bfd_coff_link_add_one_symbol) PARAMS ((
853 . struct bfd_link_info *info,
854 . bfd *abfd,
855 . const char *name,
856 . flagword flags,
857 . asection *section,
858 . bfd_vma value,
859 . const char *string,
860 . boolean copy,
861 . boolean collect,
862 . struct bfd_link_hash_entry **hashp));
863 .
864 . boolean (*_bfd_coff_link_output_has_begun) PARAMS ((
865 . bfd * abfd ));
866 . boolean (*_bfd_coff_final_link_postscript) PARAMS ((
867 . bfd * abfd,
868 . struct coff_final_link_info * pfinfo));
869 .
870 .} bfd_coff_backend_data;
871 .
872 .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
873 .
874 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
875 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
876 .
877 .#define bfd_coff_swap_sym_in(a,e,i) \
878 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
879 .
880 .#define bfd_coff_swap_lineno_in(a,e,i) \
881 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
882 .
883 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
884 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
885 .
886 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
887 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
888 .
889 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
890 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
891 .
892 .#define bfd_coff_swap_sym_out(abfd, i,o) \
893 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
894 .
895 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
896 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
897 .
898 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
899 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
900 .
901 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
902 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
903 .
904 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
905 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
906 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
907 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
908 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
909 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
910 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
911 .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
912 .#define bfd_coff_long_section_names(abfd) \
913 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
914 .#define bfd_coff_default_section_alignment_power(abfd) \
915 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
916 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
917 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
918 .
919 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
920 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
921 .
922 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
923 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
924 .
925 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
926 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
927 .
928 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
929 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
930 .
931 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
932 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
933 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
934 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
935 .
936 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
937 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
938 .
939 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
940 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
941 .
942 .#define bfd_coff_slurp_symbol_table(abfd)\
943 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
944 .
945 .#define bfd_coff_symname_in_debug(abfd, sym)\
946 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
947 .
948 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
949 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
950 . (abfd, file, base, symbol, aux, indaux))
951 .
952 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
953 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
954 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
955 .
956 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
957 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
958 . (abfd, section, reloc, shrink, link_info))
959 .
960 .#define bfd_coff_sym_is_global(abfd, sym)\
961 . ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
962 . (abfd, sym))
963 .
964 .#define bfd_coff_compute_section_file_positions(abfd)\
965 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
966 . (abfd))
967 .
968 .#define bfd_coff_start_final_link(obfd, info)\
969 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
970 . (obfd, info))
971 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
972 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
973 . (obfd, info, ibfd, o, con, rel, isyms, secs))
974 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
975 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
976 . (abfd, sec, rel, h, sym, addendp))
977 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
978 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
979 . (obfd, info, ibfd, sec, rel, adjustedp))
980 .#define bfd_coff_link_add_one_symbol(info,abfd,name,flags,section,value,string,cp,coll,hashp)\
981 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
982 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
983 .
984 .#define bfd_coff_link_output_has_begun(a) \
985 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a))
986 .#define bfd_coff_final_link_postscript(a,p) \
987 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
988 .
989 */
990
991 /* See whether the magic number matches. */
992
993 static boolean
994 coff_bad_format_hook (abfd, filehdr)
995 bfd * abfd;
996 PTR filehdr;
997 {
998 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
999
1000 if (BADMAG (*internal_f))
1001 return false;
1002
1003 /* if the optional header is NULL or not the correct size then
1004 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1005 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1006 optional header is of a different size.
1007
1008 But the mips keeps extra stuff in it's opthdr, so dont check
1009 when doing that
1010 */
1011
1012 #if defined(M88) || defined(I960)
1013 if (internal_f->f_opthdr != 0 && AOUTSZ != internal_f->f_opthdr)
1014 return false;
1015 #endif
1016
1017 return true;
1018 }
1019
1020 /*
1021 initialize a section structure with information peculiar to this
1022 particular implementation of coff
1023 */
1024
1025 static boolean
1026 coff_new_section_hook (abfd, section)
1027 bfd * abfd;
1028 asection * section;
1029 {
1030 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1031
1032 #ifdef RS6000COFF_C
1033 if (xcoff_data (abfd)->text_align_power != 0
1034 && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
1035 section->alignment_power = xcoff_data (abfd)->text_align_power;
1036 if (xcoff_data (abfd)->data_align_power != 0
1037 && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
1038 section->alignment_power = xcoff_data (abfd)->data_align_power;
1039 #endif
1040
1041 /* Allocate aux records for section symbols, to store size and
1042 related info.
1043
1044 @@ The 10 is a guess at a plausible maximum number of aux entries
1045 (but shouldn't be a constant). */
1046 coffsymbol (section->symbol)->native =
1047 (combined_entry_type *) bfd_zalloc (abfd,
1048 sizeof (combined_entry_type) * 10);
1049
1050 /* The .stab section must be aligned to 2**2 at most, because
1051 otherwise there may be gaps in the section which gdb will not
1052 know how to interpret. Examining the section name is a hack, but
1053 that is also how gdb locates the section.
1054 We need to handle the .ctors and .dtors sections similarly, to
1055 avoid introducing null words in the tables. */
1056 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER > 2
1057 && (strncmp (section->name, ".stab", 5) == 0
1058 || strcmp (section->name, ".ctors") == 0
1059 || strcmp (section->name, ".dtors") == 0))
1060 section->alignment_power = 2;
1061
1062 /* Similarly, the .stabstr section must be aligned to 2**0 at most. */
1063 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER > 0
1064 && strncmp (section->name, ".stabstr", 8) == 0)
1065 section->alignment_power = 0;
1066
1067 return true;
1068 }
1069
1070 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1071
1072 /* Set the alignment of a BFD section. */
1073
1074 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1075
1076 static void
1077 coff_set_alignment_hook (abfd, section, scnhdr)
1078 bfd * abfd;
1079 asection * section;
1080 PTR scnhdr;
1081 {
1082 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1083 unsigned int i;
1084
1085 #ifdef I960
1086 /* Extract ALIGN from 2**ALIGN stored in section header */
1087 for (i = 0; i < 32; i++)
1088 if ((1 << i) >= hdr->s_align)
1089 break;
1090 #endif
1091 /* start-sanitize-tic80 */
1092 #ifdef TIC80COFF
1093 /* TI tools hijack bits 8-11 for the alignment */
1094 i = (hdr->s_flags >> 8) & 0xF ;
1095 #endif
1096 /* end-sanitize-tic80 */
1097 section->alignment_power = i;
1098 }
1099
1100 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1101 #ifdef COFF_WITH_PE
1102
1103 /* a couple of macros to help setting the alignment power field */
1104 #define ALIGN_SET(field,x,y) \
1105 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
1106 {\
1107 section->alignment_power = y;\
1108 }
1109
1110 #define ELIFALIGN_SET(field,x,y) \
1111 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
1112 {\
1113 section->alignment_power = y;\
1114 }
1115
1116 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1117
1118 static void
1119 coff_set_alignment_hook (abfd, section, scnhdr)
1120 bfd * abfd;
1121 asection * section;
1122 PTR scnhdr;
1123 {
1124 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1125
1126 ALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_64BYTES, 6)
1127 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_32BYTES, 5)
1128 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_16BYTES, 4)
1129 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_8BYTES, 3)
1130 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_4BYTES, 2)
1131 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_2BYTES, 1)
1132 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_1BYTES, 0)
1133
1134 #ifdef POWERPC_LE_PE
1135 if (strcmp (section->name, ".idata$2") == 0)
1136 {
1137 section->alignment_power = 0;
1138 }
1139 else if (strcmp (section->name, ".idata$3") == 0)
1140 {
1141 section->alignment_power = 0;
1142 }
1143 else if (strcmp (section->name, ".idata$4") == 0)
1144 {
1145 section->alignment_power = 2;
1146 }
1147 else if (strcmp (section->name, ".idata$5") == 0)
1148 {
1149 section->alignment_power = 2;
1150 }
1151 else if (strcmp (section->name, ".idata$6") == 0)
1152 {
1153 section->alignment_power = 1;
1154 }
1155 else if (strcmp (section->name, ".reloc") == 0)
1156 {
1157 section->alignment_power = 1;
1158 }
1159 else if (strncmp (section->name, ".stab", 5) == 0)
1160 {
1161 section->alignment_power = 2;
1162 }
1163 #endif
1164
1165 #ifdef COFF_IMAGE_WITH_PE
1166 /* In a PE image file, the s_paddr field holds the virtual size of a
1167 section, while the s_size field holds the raw size. */
1168 if (hdr->s_paddr != 0)
1169 {
1170 if (coff_section_data (abfd, section) == NULL)
1171 {
1172 section->used_by_bfd =
1173 (PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata));
1174 if (section->used_by_bfd == NULL)
1175 {
1176 /* FIXME: Return error. */
1177 abort ();
1178 }
1179 }
1180 if (pei_section_data (abfd, section) == NULL)
1181 {
1182 coff_section_data (abfd, section)->tdata =
1183 (PTR) bfd_zalloc (abfd, sizeof (struct pei_section_tdata));
1184 if (coff_section_data (abfd, section)->tdata == NULL)
1185 {
1186 /* FIXME: Return error. */
1187 abort ();
1188 }
1189 }
1190 pei_section_data (abfd, section)->virt_size = hdr->s_paddr;
1191 }
1192 #endif
1193
1194 }
1195 #undef ALIGN_SET
1196 #undef ELIFALIGN_SET
1197
1198 #else /* ! COFF_WITH_PE */
1199 #ifdef RS6000COFF_C
1200
1201 /* We grossly abuse this function to handle XCOFF overflow headers.
1202 When we see one, we correct the reloc and line number counts in the
1203 real header, and remove the section we just created. */
1204
1205 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1206
1207 static void
1208 coff_set_alignment_hook (abfd, section, scnhdr)
1209 bfd *abfd;
1210 asection *section;
1211 PTR scnhdr;
1212 {
1213 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1214 asection *real_sec;
1215 asection **ps;
1216
1217 if ((hdr->s_flags & STYP_OVRFLO) == 0)
1218 return;
1219
1220 real_sec = coff_section_from_bfd_index (abfd, hdr->s_nreloc);
1221 if (real_sec == NULL)
1222 return;
1223
1224 real_sec->reloc_count = hdr->s_paddr;
1225 real_sec->lineno_count = hdr->s_vaddr;
1226
1227 for (ps = &abfd->sections; *ps != NULL; ps = &(*ps)->next)
1228 {
1229 if (*ps == section)
1230 {
1231 *ps = (*ps)->next;
1232 --abfd->section_count;
1233 break;
1234 }
1235 }
1236 }
1237
1238 #else /* ! RS6000COFF_C */
1239
1240 #define coff_set_alignment_hook \
1241 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1242
1243 #endif /* ! RS6000COFF_C */
1244 #endif /* ! COFF_WITH_PE */
1245 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1246
1247 #ifndef coff_mkobject
1248
1249 static boolean coff_mkobject PARAMS ((bfd *));
1250
1251 static boolean
1252 coff_mkobject (abfd)
1253 bfd * abfd;
1254 {
1255 coff_data_type *coff;
1256
1257 abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, sizeof (coff_data_type));
1258 if (abfd->tdata.coff_obj_data == 0)
1259 return false;
1260 coff = coff_data (abfd);
1261 coff->symbols = (coff_symbol_type *) NULL;
1262 coff->conversion_table = (unsigned int *) NULL;
1263 coff->raw_syments = (struct coff_ptr_struct *) NULL;
1264 coff->relocbase = 0;
1265 coff->local_toc_sym_map = 0;
1266
1267 /* make_abs_section(abfd);*/
1268
1269 return true;
1270 }
1271 #endif
1272
1273 /* Create the COFF backend specific information. */
1274 #ifndef coff_mkobject_hook
1275 static PTR
1276 coff_mkobject_hook (abfd, filehdr, aouthdr)
1277 bfd * abfd;
1278 PTR filehdr;
1279 PTR aouthdr;
1280 {
1281 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1282 coff_data_type *coff;
1283
1284 if (coff_mkobject (abfd) == false)
1285 return NULL;
1286
1287 coff = coff_data (abfd);
1288
1289 coff->sym_filepos = internal_f->f_symptr;
1290
1291 /* These members communicate important constants about the symbol
1292 table to GDB's symbol-reading code. These `constants'
1293 unfortunately vary among coff implementations... */
1294 coff->local_n_btmask = N_BTMASK;
1295 coff->local_n_btshft = N_BTSHFT;
1296 coff->local_n_tmask = N_TMASK;
1297 coff->local_n_tshift = N_TSHIFT;
1298 coff->local_symesz = SYMESZ;
1299 coff->local_auxesz = AUXESZ;
1300 coff->local_linesz = LINESZ;
1301
1302 obj_raw_syment_count (abfd) =
1303 obj_conv_table_size (abfd) =
1304 internal_f->f_nsyms;
1305
1306 #ifdef RS6000COFF_C
1307 if ((internal_f->f_flags & F_SHROBJ) != 0)
1308 abfd->flags |= DYNAMIC;
1309 if (aouthdr != NULL && internal_f->f_opthdr >= AOUTSZ)
1310 {
1311 struct internal_aouthdr *internal_a =
1312 (struct internal_aouthdr *) aouthdr;
1313 struct xcoff_tdata *xcoff;
1314
1315 xcoff = xcoff_data (abfd);
1316 xcoff->full_aouthdr = true;
1317 xcoff->toc = internal_a->o_toc;
1318 xcoff->sntoc = internal_a->o_sntoc;
1319 xcoff->snentry = internal_a->o_snentry;
1320 xcoff->text_align_power = internal_a->o_algntext;
1321 xcoff->data_align_power = internal_a->o_algndata;
1322 xcoff->modtype = internal_a->o_modtype;
1323 xcoff->cputype = internal_a->o_cputype;
1324 xcoff->maxdata = internal_a->o_maxdata;
1325 xcoff->maxstack = internal_a->o_maxstack;
1326 }
1327 #endif
1328
1329 #if defined ARM && ! defined COFF_WITH_PE
1330 /* Set the flags field from the COFF header read in */
1331 if (! coff_arm_bfd_set_private_flags (abfd, internal_f->f_flags))
1332 coff->flags = 0;
1333 #endif
1334
1335 return (PTR) coff;
1336 }
1337 #endif
1338
1339 /* Determine the machine architecture and type. FIXME: This is target
1340 dependent because the magic numbers are defined in the target
1341 dependent header files. But there is no particular need for this.
1342 If the magic numbers were moved to a separate file, this function
1343 would be target independent and would also be much more successful
1344 at linking together COFF files for different architectures. */
1345
1346 static boolean
1347 coff_set_arch_mach_hook (abfd, filehdr)
1348 bfd *abfd;
1349 PTR filehdr;
1350 {
1351 long machine;
1352 enum bfd_architecture arch;
1353 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1354
1355 machine = 0;
1356 switch (internal_f->f_magic)
1357 {
1358 #ifdef PPCMAGIC
1359 case PPCMAGIC:
1360 arch = bfd_arch_powerpc;
1361 machine = 0; /* what does this mean? (krk) */
1362 break;
1363 #endif
1364 #ifdef I386MAGIC
1365 case I386MAGIC:
1366 case I386PTXMAGIC:
1367 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */
1368 case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */
1369 arch = bfd_arch_i386;
1370 machine = 0;
1371 break;
1372 #endif
1373 #ifdef A29K_MAGIC_BIG
1374 case A29K_MAGIC_BIG:
1375 case A29K_MAGIC_LITTLE:
1376 arch = bfd_arch_a29k;
1377 machine = 0;
1378 break;
1379 #endif
1380 #ifdef ARMMAGIC
1381 case ARMMAGIC:
1382 arch = bfd_arch_arm;
1383 switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK)
1384 {
1385 case F_ARM_2: machine = bfd_mach_arm_2; break;
1386 case F_ARM_2a: machine = bfd_mach_arm_2a; break;
1387 case F_ARM_3: machine = bfd_mach_arm_3; break;
1388 default:
1389 case F_ARM_3M: machine = bfd_mach_arm_3M; break;
1390 case F_ARM_4: machine = bfd_mach_arm_4; break;
1391 case F_ARM_4T: machine = bfd_mach_arm_4T; break;
1392 }
1393 break;
1394 #endif
1395 #ifdef MC68MAGIC
1396 case MC68MAGIC:
1397 case M68MAGIC:
1398 #ifdef MC68KBCSMAGIC
1399 case MC68KBCSMAGIC:
1400 #endif
1401 #ifdef APOLLOM68KMAGIC
1402 case APOLLOM68KMAGIC:
1403 #endif
1404 #ifdef LYNXCOFFMAGIC
1405 case LYNXCOFFMAGIC:
1406 #endif
1407 arch = bfd_arch_m68k;
1408 machine = 68020;
1409 break;
1410 #endif
1411 #ifdef MC88MAGIC
1412 case MC88MAGIC:
1413 case MC88DMAGIC:
1414 case MC88OMAGIC:
1415 arch = bfd_arch_m88k;
1416 machine = 88100;
1417 break;
1418 #endif
1419 #ifdef Z8KMAGIC
1420 case Z8KMAGIC:
1421 arch = bfd_arch_z8k;
1422 switch (internal_f->f_flags & F_MACHMASK)
1423 {
1424 case F_Z8001:
1425 machine = bfd_mach_z8001;
1426 break;
1427 case F_Z8002:
1428 machine = bfd_mach_z8002;
1429 break;
1430 default:
1431 return false;
1432 }
1433 break;
1434 #endif
1435 #ifdef I860
1436 case I860MAGIC:
1437 arch = bfd_arch_i860;
1438 break;
1439 #endif
1440 #ifdef I960
1441 #ifdef I960ROMAGIC
1442 case I960ROMAGIC:
1443 case I960RWMAGIC:
1444 arch = bfd_arch_i960;
1445 switch (F_I960TYPE & internal_f->f_flags)
1446 {
1447 default:
1448 case F_I960CORE:
1449 machine = bfd_mach_i960_core;
1450 break;
1451 case F_I960KB:
1452 machine = bfd_mach_i960_kb_sb;
1453 break;
1454 case F_I960MC:
1455 machine = bfd_mach_i960_mc;
1456 break;
1457 case F_I960XA:
1458 machine = bfd_mach_i960_xa;
1459 break;
1460 case F_I960CA:
1461 machine = bfd_mach_i960_ca;
1462 break;
1463 case F_I960KA:
1464 machine = bfd_mach_i960_ka_sa;
1465 break;
1466 case F_I960JX:
1467 machine = bfd_mach_i960_jx;
1468 break;
1469 case F_I960HX:
1470 machine = bfd_mach_i960_hx;
1471 break;
1472 }
1473 break;
1474 #endif
1475 #endif
1476
1477 #ifdef RS6000COFF_C
1478 case U802ROMAGIC:
1479 case U802WRMAGIC:
1480 case U802TOCMAGIC:
1481 {
1482 int cputype;
1483
1484 if (xcoff_data (abfd)->cputype != -1)
1485 cputype = xcoff_data (abfd)->cputype & 0xff;
1486 else
1487 {
1488 /* We did not get a value from the a.out header. If the
1489 file has not been stripped, we may be able to get the
1490 architecture information from the first symbol, if it
1491 is a .file symbol. */
1492 if (obj_raw_syment_count (abfd) == 0)
1493 cputype = 0;
1494 else
1495 {
1496 bfd_byte buf[SYMESZ];
1497 struct internal_syment sym;
1498
1499 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1500 || bfd_read (buf, 1, SYMESZ, abfd) != SYMESZ)
1501 return false;
1502 coff_swap_sym_in (abfd, (PTR) buf, (PTR) &sym);
1503 if (sym.n_sclass == C_FILE)
1504 cputype = sym.n_type & 0xff;
1505 else
1506 cputype = 0;
1507 }
1508 }
1509
1510 /* FIXME: We don't handle all cases here. */
1511 switch (cputype)
1512 {
1513 default:
1514 case 0:
1515 #ifdef POWERMAC
1516 /* PowerPC Macs use the same magic numbers as RS/6000
1517 (because that's how they were bootstrapped originally),
1518 but they are always PowerPC architecture. */
1519 arch = bfd_arch_powerpc;
1520 machine = 0;
1521 #else
1522 arch = bfd_arch_rs6000;
1523 machine = 6000;
1524 #endif /* POWERMAC */
1525 break;
1526
1527 case 1:
1528 arch = bfd_arch_powerpc;
1529 machine = 601;
1530 break;
1531 case 2: /* 64 bit PowerPC */
1532 arch = bfd_arch_powerpc;
1533 machine = 620;
1534 break;
1535 case 3:
1536 arch = bfd_arch_powerpc;
1537 machine = 0;
1538 break;
1539 case 4:
1540 arch = bfd_arch_rs6000;
1541 machine = 6000;
1542 break;
1543 }
1544 }
1545 break;
1546 #endif
1547
1548 #ifdef WE32KMAGIC
1549 case WE32KMAGIC:
1550 arch = bfd_arch_we32k;
1551 machine = 0;
1552 break;
1553 #endif
1554
1555 #ifdef H8300MAGIC
1556 case H8300MAGIC:
1557 arch = bfd_arch_h8300;
1558 machine = bfd_mach_h8300;
1559 /* !! FIXME this probably isn't the right place for this */
1560 abfd->flags |= BFD_IS_RELAXABLE;
1561 break;
1562 #endif
1563
1564 #ifdef H8300HMAGIC
1565 case H8300HMAGIC:
1566 arch = bfd_arch_h8300;
1567 machine = bfd_mach_h8300h;
1568 /* !! FIXME this probably isn't the right place for this */
1569 abfd->flags |= BFD_IS_RELAXABLE;
1570 break;
1571 #endif
1572
1573 #ifdef H8300SMAGIC
1574 case H8300SMAGIC:
1575 arch = bfd_arch_h8300;
1576 machine = bfd_mach_h8300s;
1577 /* !! FIXME this probably isn't the right place for this */
1578 abfd->flags |= BFD_IS_RELAXABLE;
1579 break;
1580 #endif
1581
1582 #ifdef SH_ARCH_MAGIC_BIG
1583 case SH_ARCH_MAGIC_BIG:
1584 case SH_ARCH_MAGIC_LITTLE:
1585 arch = bfd_arch_sh;
1586 machine = 0;
1587 break;
1588 #endif
1589
1590 #ifdef H8500MAGIC
1591 case H8500MAGIC:
1592 arch = bfd_arch_h8500;
1593 machine = 0;
1594 break;
1595 #endif
1596
1597 #ifdef SPARCMAGIC
1598 case SPARCMAGIC:
1599 #ifdef LYNXCOFFMAGIC
1600 case LYNXCOFFMAGIC:
1601 #endif
1602 arch = bfd_arch_sparc;
1603 machine = 0;
1604 break;
1605 #endif
1606
1607 #ifdef TIC30MAGIC
1608 case TIC30MAGIC:
1609 arch = bfd_arch_tic30;
1610 break;
1611 #endif
1612
1613 /* start-sanitize-tic80 */
1614 #ifdef TIC80_ARCH_MAGIC
1615 case TIC80_ARCH_MAGIC:
1616 arch = bfd_arch_tic80;
1617 break;
1618 #endif
1619 /* end-sanitize-tic80 */
1620
1621 default: /* Unreadable input file type */
1622 arch = bfd_arch_obscure;
1623 break;
1624 }
1625
1626 bfd_default_set_arch_mach (abfd, arch, machine);
1627 return true;
1628 }
1629
1630 #ifdef SYMNAME_IN_DEBUG
1631
1632 static boolean symname_in_debug_hook
1633 PARAMS ((bfd *, struct internal_syment *));
1634
1635 static boolean
1636 symname_in_debug_hook (abfd, sym)
1637 bfd * abfd;
1638 struct internal_syment *sym;
1639 {
1640 return SYMNAME_IN_DEBUG (sym) ? true : false;
1641 }
1642
1643 #else
1644
1645 #define symname_in_debug_hook \
1646 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
1647
1648 #endif
1649
1650 #ifdef RS6000COFF_C
1651
1652 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
1653
1654 static boolean coff_pointerize_aux_hook
1655 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
1656 unsigned int, combined_entry_type *));
1657
1658 /*ARGSUSED*/
1659 static boolean
1660 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
1661 bfd *abfd;
1662 combined_entry_type *table_base;
1663 combined_entry_type *symbol;
1664 unsigned int indaux;
1665 combined_entry_type *aux;
1666 {
1667 int class = symbol->u.syment.n_sclass;
1668
1669 if ((class == C_EXT || class == C_HIDEXT)
1670 && indaux + 1 == symbol->u.syment.n_numaux)
1671 {
1672 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
1673 {
1674 aux->u.auxent.x_csect.x_scnlen.p =
1675 table_base + aux->u.auxent.x_csect.x_scnlen.l;
1676 aux->fix_scnlen = 1;
1677 }
1678
1679 /* Return true to indicate that the caller should not do any
1680 further work on this auxent. */
1681 return true;
1682 }
1683
1684 /* Return false to indicate that this auxent should be handled by
1685 the caller. */
1686 return false;
1687 }
1688
1689 #else
1690 #ifdef I960
1691
1692 /* We don't want to pointerize bal entries. */
1693
1694 static boolean coff_pointerize_aux_hook
1695 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
1696 unsigned int, combined_entry_type *));
1697
1698 /*ARGSUSED*/
1699 static boolean
1700 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
1701 bfd *abfd;
1702 combined_entry_type *table_base;
1703 combined_entry_type *symbol;
1704 unsigned int indaux;
1705 combined_entry_type *aux;
1706 {
1707 /* Return true if we don't want to pointerize this aux entry, which
1708 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
1709 return (indaux == 1
1710 && (symbol->u.syment.n_sclass == C_LEAFPROC
1711 || symbol->u.syment.n_sclass == C_LEAFSTAT
1712 || symbol->u.syment.n_sclass == C_LEAFEXT));
1713 }
1714
1715 #else /* ! I960 */
1716
1717 #define coff_pointerize_aux_hook 0
1718
1719 #endif /* ! I960 */
1720 #endif /* ! RS6000COFF_C */
1721
1722 /* Print an aux entry. This returns true if it has printed it. */
1723
1724 static boolean coff_print_aux
1725 PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1726 combined_entry_type *, unsigned int));
1727
1728 static boolean
1729 coff_print_aux (abfd, file, table_base, symbol, aux, indaux)
1730 bfd *abfd;
1731 FILE *file;
1732 combined_entry_type *table_base;
1733 combined_entry_type *symbol;
1734 combined_entry_type *aux;
1735 unsigned int indaux;
1736 {
1737 #ifdef RS6000COFF_C
1738 if ((symbol->u.syment.n_sclass == C_EXT
1739 || symbol->u.syment.n_sclass == C_HIDEXT)
1740 && indaux + 1 == symbol->u.syment.n_numaux)
1741 {
1742 /* This is a csect entry. */
1743 fprintf (file, "AUX ");
1744 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
1745 {
1746 BFD_ASSERT (! aux->fix_scnlen);
1747 fprintf (file, "val %5ld", aux->u.auxent.x_csect.x_scnlen.l);
1748 }
1749 else
1750 {
1751 fprintf (file, "indx ");
1752 if (! aux->fix_scnlen)
1753 fprintf (file, "%4ld", aux->u.auxent.x_csect.x_scnlen.l);
1754 else
1755 fprintf (file, "%4ld",
1756 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
1757 }
1758 fprintf (file,
1759 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
1760 aux->u.auxent.x_csect.x_parmhash,
1761 (unsigned int) aux->u.auxent.x_csect.x_snhash,
1762 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
1763 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
1764 (unsigned int) aux->u.auxent.x_csect.x_smclas,
1765 aux->u.auxent.x_csect.x_stab,
1766 (unsigned int) aux->u.auxent.x_csect.x_snstab);
1767 return true;
1768 }
1769 #endif
1770
1771 /* Return false to indicate that no special action was taken. */
1772 return false;
1773 }
1774
1775 /*
1776 SUBSUBSECTION
1777 Writing relocations
1778
1779 To write relocations, the back end steps though the
1780 canonical relocation table and create an
1781 @code{internal_reloc}. The symbol index to use is removed from
1782 the @code{offset} field in the symbol table supplied. The
1783 address comes directly from the sum of the section base
1784 address and the relocation offset; the type is dug directly
1785 from the howto field. Then the @code{internal_reloc} is
1786 swapped into the shape of an @code{external_reloc} and written
1787 out to disk.
1788
1789 */
1790
1791 #ifdef TARG_AUX
1792
1793 static int compare_arelent_ptr PARAMS ((const PTR, const PTR));
1794
1795 /* AUX's ld wants relocations to be sorted */
1796 static int
1797 compare_arelent_ptr (x, y)
1798 const PTR x;
1799 const PTR y;
1800 {
1801 const arelent **a = (const arelent **) x;
1802 const arelent **b = (const arelent **) y;
1803 bfd_size_type aadr = (*a)->address;
1804 bfd_size_type badr = (*b)->address;
1805
1806 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
1807 }
1808
1809 #endif /* TARG_AUX */
1810
1811 static boolean
1812 coff_write_relocs (abfd, first_undef)
1813 bfd * abfd;
1814 int first_undef;
1815 {
1816 asection *s;
1817
1818 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
1819 {
1820 unsigned int i;
1821 struct external_reloc dst;
1822 arelent **p;
1823
1824 #ifndef TARG_AUX
1825 p = s->orelocation;
1826 #else
1827 /* sort relocations before we write them out */
1828 p = (arelent **) bfd_malloc (s->reloc_count * sizeof (arelent *));
1829 if (p == NULL && s->reloc_count > 0)
1830 return false;
1831 memcpy (p, s->orelocation, s->reloc_count * sizeof (arelent *));
1832 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
1833 #endif
1834
1835 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
1836 return false;
1837 for (i = 0; i < s->reloc_count; i++)
1838 {
1839 struct internal_reloc n;
1840 arelent *q = p[i];
1841 memset ((PTR) & n, 0, sizeof (n));
1842
1843 /* Now we've renumbered the symbols we know where the
1844 undefined symbols live in the table. Check the reloc
1845 entries for symbols who's output bfd isn't the right one.
1846 This is because the symbol was undefined (which means
1847 that all the pointers are never made to point to the same
1848 place). This is a bad thing,'cause the symbols attached
1849 to the output bfd are indexed, so that the relocation
1850 entries know which symbol index they point to. So we
1851 have to look up the output symbol here. */
1852
1853 if (q->sym_ptr_ptr[0]->the_bfd != abfd)
1854 {
1855 int i;
1856 const char *sname = q->sym_ptr_ptr[0]->name;
1857 asymbol **outsyms = abfd->outsymbols;
1858 for (i = first_undef; outsyms[i]; i++)
1859 {
1860 const char *intable = outsyms[i]->name;
1861 if (strcmp (intable, sname) == 0) {
1862 /* got a hit, so repoint the reloc */
1863 q->sym_ptr_ptr = outsyms + i;
1864 break;
1865 }
1866 }
1867 }
1868
1869 n.r_vaddr = q->address + s->vma;
1870
1871 #ifdef R_IHCONST
1872 /* The 29k const/consth reloc pair is a real kludge. The consth
1873 part doesn't have a symbol; it has an offset. So rebuilt
1874 that here. */
1875 if (q->howto->type == R_IHCONST)
1876 n.r_symndx = q->addend;
1877 else
1878 #endif
1879 if (q->sym_ptr_ptr)
1880 {
1881 if (q->sym_ptr_ptr == bfd_abs_section_ptr->symbol_ptr_ptr)
1882 /* This is a relocation relative to the absolute symbol. */
1883 n.r_symndx = -1;
1884 else
1885 {
1886 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
1887 /* Take notice if the symbol reloc points to a symbol
1888 we don't have in our symbol table. What should we
1889 do for this?? */
1890 if (n.r_symndx > obj_conv_table_size (abfd))
1891 abort ();
1892 }
1893 }
1894
1895 #ifdef SWAP_OUT_RELOC_OFFSET
1896 n.r_offset = q->addend;
1897 #endif
1898
1899 #ifdef SELECT_RELOC
1900 /* Work out reloc type from what is required */
1901 SELECT_RELOC (n, q->howto);
1902 #else
1903 n.r_type = q->howto->type;
1904 #endif
1905 coff_swap_reloc_out (abfd, &n, &dst);
1906 if (bfd_write ((PTR) & dst, 1, RELSZ, abfd) != RELSZ)
1907 return false;
1908 }
1909
1910 #ifdef TARG_AUX
1911 if (p != NULL)
1912 free (p);
1913 #endif
1914 }
1915
1916 return true;
1917 }
1918
1919 /* Set flags and magic number of a coff file from architecture and machine
1920 type. Result is true if we can represent the arch&type, false if not. */
1921
1922 static boolean
1923 coff_set_flags (abfd, magicp, flagsp)
1924 bfd * abfd;
1925 unsigned int *magicp;
1926 unsigned short *flagsp;
1927 {
1928 switch (bfd_get_arch (abfd))
1929 {
1930 #ifdef Z8KMAGIC
1931 case bfd_arch_z8k:
1932 *magicp = Z8KMAGIC;
1933 switch (bfd_get_mach (abfd))
1934 {
1935 case bfd_mach_z8001:
1936 *flagsp = F_Z8001;
1937 break;
1938 case bfd_mach_z8002:
1939 *flagsp = F_Z8002;
1940 break;
1941 default:
1942 return false;
1943 }
1944 return true;
1945 #endif
1946 #ifdef I960ROMAGIC
1947
1948 case bfd_arch_i960:
1949
1950 {
1951 unsigned flags;
1952 *magicp = I960ROMAGIC;
1953 /*
1954 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
1955 I960RWMAGIC); FIXME???
1956 */
1957 switch (bfd_get_mach (abfd))
1958 {
1959 case bfd_mach_i960_core:
1960 flags = F_I960CORE;
1961 break;
1962 case bfd_mach_i960_kb_sb:
1963 flags = F_I960KB;
1964 break;
1965 case bfd_mach_i960_mc:
1966 flags = F_I960MC;
1967 break;
1968 case bfd_mach_i960_xa:
1969 flags = F_I960XA;
1970 break;
1971 case bfd_mach_i960_ca:
1972 flags = F_I960CA;
1973 break;
1974 case bfd_mach_i960_ka_sa:
1975 flags = F_I960KA;
1976 break;
1977 case bfd_mach_i960_jx:
1978 flags = F_I960JX;
1979 break;
1980 case bfd_mach_i960_hx:
1981 flags = F_I960HX;
1982 break;
1983 default:
1984 return false;
1985 }
1986 *flagsp = flags;
1987 return true;
1988 }
1989 break;
1990 #endif
1991
1992 #ifdef TIC30MAGIC
1993 case bfd_arch_tic30:
1994 *magicp = TIC30MAGIC;
1995 return true;
1996 #endif
1997 /* start-sanitize-tic80 */
1998 #ifdef TIC80_ARCH_MAGIC
1999 case bfd_arch_tic80:
2000 *magicp = TIC80_ARCH_MAGIC;
2001 return true;
2002 #endif
2003 /* end-sanitize-tic80 */
2004 #ifdef ARMMAGIC
2005 case bfd_arch_arm:
2006 * magicp = ARMMAGIC;
2007 * flagsp = 0;
2008 if (APCS_SET (abfd))
2009 {
2010 if (APCS_26_FLAG (abfd))
2011 * flagsp |= F_APCS26;
2012
2013 if (APCS_FLOAT_FLAG (abfd))
2014 * flagsp |= F_APCS_FLOAT;
2015
2016 if (PIC_FLAG (abfd))
2017 * flagsp |= F_PIC;
2018 }
2019 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2020 * flagsp |= F_INTERWORK;
2021 switch (bfd_get_mach (abfd))
2022 {
2023 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2024 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2025 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2026 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2027 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2028 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2029 }
2030 return true;
2031 #endif
2032 #ifdef PPCMAGIC
2033 case bfd_arch_powerpc:
2034 *magicp = PPCMAGIC;
2035 return true;
2036 break;
2037 #endif
2038 #ifdef I386MAGIC
2039 case bfd_arch_i386:
2040 *magicp = I386MAGIC;
2041 #ifdef LYNXOS
2042 /* Just overwrite the usual value if we're doing Lynx. */
2043 *magicp = LYNXCOFFMAGIC;
2044 #endif
2045 return true;
2046 break;
2047 #endif
2048 #ifdef I860MAGIC
2049 case bfd_arch_i860:
2050 *magicp = I860MAGIC;
2051 return true;
2052 break;
2053 #endif
2054 #ifdef MC68MAGIC
2055 case bfd_arch_m68k:
2056 #ifdef APOLLOM68KMAGIC
2057 *magicp = APOLLO_COFF_VERSION_NUMBER;
2058 #else
2059 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2060 #ifdef NAMES_HAVE_UNDERSCORE
2061 *magicp = MC68KBCSMAGIC;
2062 #else
2063 *magicp = MC68MAGIC;
2064 #endif
2065 #endif
2066 #ifdef LYNXOS
2067 /* Just overwrite the usual value if we're doing Lynx. */
2068 *magicp = LYNXCOFFMAGIC;
2069 #endif
2070 return true;
2071 break;
2072 #endif
2073
2074 #ifdef MC88MAGIC
2075 case bfd_arch_m88k:
2076 *magicp = MC88OMAGIC;
2077 return true;
2078 break;
2079 #endif
2080 #ifdef H8300MAGIC
2081 case bfd_arch_h8300:
2082 switch (bfd_get_mach (abfd))
2083 {
2084 case bfd_mach_h8300:
2085 *magicp = H8300MAGIC;
2086 return true;
2087 case bfd_mach_h8300h:
2088 *magicp = H8300HMAGIC;
2089 return true;
2090 case bfd_mach_h8300s:
2091 *magicp = H8300SMAGIC;
2092 return true;
2093 }
2094 break;
2095 #endif
2096
2097 #ifdef SH_ARCH_MAGIC_BIG
2098 case bfd_arch_sh:
2099 if (bfd_big_endian (abfd))
2100 *magicp = SH_ARCH_MAGIC_BIG;
2101 else
2102 *magicp = SH_ARCH_MAGIC_LITTLE;
2103 return true;
2104 break;
2105 #endif
2106
2107 #ifdef SPARCMAGIC
2108 case bfd_arch_sparc:
2109 *magicp = SPARCMAGIC;
2110 #ifdef LYNXOS
2111 /* Just overwrite the usual value if we're doing Lynx. */
2112 *magicp = LYNXCOFFMAGIC;
2113 #endif
2114 return true;
2115 break;
2116 #endif
2117
2118 #ifdef H8500MAGIC
2119 case bfd_arch_h8500:
2120 *magicp = H8500MAGIC;
2121 return true;
2122 break;
2123 #endif
2124 #ifdef A29K_MAGIC_BIG
2125 case bfd_arch_a29k:
2126 if (bfd_big_endian (abfd))
2127 *magicp = A29K_MAGIC_BIG;
2128 else
2129 *magicp = A29K_MAGIC_LITTLE;
2130 return true;
2131 break;
2132 #endif
2133
2134 #ifdef WE32KMAGIC
2135 case bfd_arch_we32k:
2136 *magicp = WE32KMAGIC;
2137 return true;
2138 break;
2139 #endif
2140
2141 #ifdef U802TOCMAGIC
2142 case bfd_arch_rs6000:
2143 #ifndef PPCMAGIC
2144 case bfd_arch_powerpc:
2145 #endif
2146 *magicp = U802TOCMAGIC;
2147 return true;
2148 break;
2149 #endif
2150
2151 default: /* Unknown architecture */
2152 /* return false; -- fall through to "return false" below, to avoid
2153 "statement never reached" errors on the one below. */
2154 break;
2155 }
2156
2157 return false;
2158 }
2159
2160
2161 static boolean
2162 coff_set_arch_mach (abfd, arch, machine)
2163 bfd * abfd;
2164 enum bfd_architecture arch;
2165 unsigned long machine;
2166 {
2167 unsigned dummy1;
2168 unsigned short dummy2;
2169
2170 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2171 return false;
2172
2173 if (arch != bfd_arch_unknown &&
2174 coff_set_flags (abfd, &dummy1, &dummy2) != true)
2175 return false; /* We can't represent this type */
2176
2177 return true; /* We're easy ... */
2178 }
2179
2180
2181 /* Calculate the file position for each section. */
2182
2183 #ifndef I960
2184 #define ALIGN_SECTIONS_IN_FILE
2185 #endif
2186 /* start-sanitize-tic80 */
2187 #ifdef TIC80COFF
2188 #undef ALIGN_SECTIONS_IN_FILE
2189 #endif
2190 /* end-sanitize-tic80 */
2191
2192 static boolean
2193 coff_compute_section_file_positions (abfd)
2194 bfd * abfd;
2195 {
2196 asection *current;
2197 asection *previous = (asection *) NULL;
2198 file_ptr sofar = FILHSZ;
2199 boolean align_adjust;
2200
2201 #ifndef I960
2202 file_ptr old_sofar;
2203 #endif
2204 unsigned int count;
2205
2206 #ifdef RS6000COFF_C
2207 /* On XCOFF, if we have symbols, set up the .debug section. */
2208 if (bfd_get_symcount (abfd) > 0)
2209 {
2210 bfd_size_type sz;
2211 bfd_size_type i, symcount;
2212 asymbol **symp;
2213
2214 sz = 0;
2215 symcount = bfd_get_symcount (abfd);
2216 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
2217 {
2218 coff_symbol_type *cf;
2219
2220 cf = coff_symbol_from (abfd, *symp);
2221 if (cf != NULL
2222 && cf->native != NULL
2223 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
2224 {
2225 size_t len;
2226
2227 len = strlen (bfd_asymbol_name (*symp));
2228 if (len > SYMNMLEN)
2229 sz += len + 3;
2230 }
2231 }
2232 if (sz > 0)
2233 {
2234 asection *dsec;
2235
2236 dsec = bfd_make_section_old_way (abfd, ".debug");
2237 if (dsec == NULL)
2238 abort ();
2239 dsec->_raw_size = sz;
2240 dsec->flags |= SEC_HAS_CONTENTS;
2241 }
2242 }
2243 #endif
2244
2245 #ifdef COFF_IMAGE_WITH_PE
2246 int page_size;
2247 if (coff_data (abfd)->link_info)
2248 {
2249 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
2250 }
2251 else
2252 page_size = PE_DEF_FILE_ALIGNMENT;
2253 #else
2254 #ifdef COFF_PAGE_SIZE
2255 int page_size = COFF_PAGE_SIZE;
2256 #endif
2257 #endif
2258
2259 if (bfd_get_start_address (abfd))
2260 {
2261 /* A start address may have been added to the original file. In this
2262 case it will need an optional header to record it. */
2263 abfd->flags |= EXEC_P;
2264 }
2265
2266 if (abfd->flags & EXEC_P)
2267 sofar += AOUTSZ;
2268 #ifdef RS6000COFF_C
2269 else if (xcoff_data (abfd)->full_aouthdr)
2270 sofar += AOUTSZ;
2271 else
2272 sofar += SMALL_AOUTSZ;
2273 #endif
2274
2275 sofar += abfd->section_count * SCNHSZ;
2276
2277 #ifdef RS6000COFF_C
2278 /* XCOFF handles overflows in the reloc and line number count fields
2279 by allocating a new section header to hold the correct counts. */
2280 for (current = abfd->sections; current != NULL; current = current->next)
2281 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2282 sofar += SCNHSZ;
2283 #endif
2284
2285 align_adjust = false;
2286 for (current = abfd->sections, count = 1;
2287 current != (asection *) NULL;
2288 current = current->next, ++count)
2289 {
2290 current->target_index = count;
2291
2292 /* Only deal with sections which have contents */
2293 if (!(current->flags & SEC_HAS_CONTENTS))
2294 continue;
2295
2296 /* Align the sections in the file to the same boundary on
2297 which they are aligned in virtual memory. I960 doesn't
2298 do this (FIXME) so we can stay in sync with Intel. 960
2299 doesn't yet page from files... */
2300 #ifdef ALIGN_SECTIONS_IN_FILE
2301 if ((abfd->flags & EXEC_P) != 0)
2302 {
2303 /* make sure this section is aligned on the right boundary - by
2304 padding the previous section up if necessary */
2305
2306 old_sofar = sofar;
2307 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
2308 if (previous != (asection *) NULL)
2309 {
2310 previous->_raw_size += sofar - old_sofar;
2311 }
2312 }
2313
2314 #endif
2315
2316 /* In demand paged files the low order bits of the file offset
2317 must match the low order bits of the virtual address. */
2318 #ifdef COFF_PAGE_SIZE
2319 if ((abfd->flags & D_PAGED) != 0
2320 && (current->flags & SEC_ALLOC) != 0)
2321 sofar += (current->vma - sofar) % page_size;
2322 #endif
2323 current->filepos = sofar;
2324
2325 #ifdef COFF_IMAGE_WITH_PE
2326 /* With PE we have to pad each section to be a multiple of its
2327 page size too, and remember both sizes. */
2328
2329 if (coff_section_data (abfd, current) == NULL)
2330 {
2331 current->used_by_bfd =
2332 (PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata));
2333 if (current->used_by_bfd == NULL)
2334 return false;
2335 }
2336 if (pei_section_data (abfd, current) == NULL)
2337 {
2338 coff_section_data (abfd, current)->tdata =
2339 (PTR) bfd_zalloc (abfd, sizeof (struct pei_section_tdata));
2340 if (coff_section_data (abfd, current)->tdata == NULL)
2341 return false;
2342 }
2343 if (pei_section_data (abfd, current)->virt_size == 0)
2344 pei_section_data (abfd, current)->virt_size = current->_raw_size;
2345
2346 current->_raw_size = (current->_raw_size + page_size -1) & -page_size;
2347 #endif
2348
2349 sofar += current->_raw_size;
2350
2351 #ifdef ALIGN_SECTIONS_IN_FILE
2352 /* make sure that this section is of the right size too */
2353 if ((abfd->flags & EXEC_P) == 0)
2354 {
2355 bfd_size_type old_size;
2356
2357 old_size = current->_raw_size;
2358 current->_raw_size = BFD_ALIGN (current->_raw_size,
2359 1 << current->alignment_power);
2360 align_adjust = current->_raw_size != old_size;
2361 sofar += current->_raw_size - old_size;
2362 }
2363 else
2364 {
2365 old_sofar = sofar;
2366 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
2367 align_adjust = sofar != old_sofar;
2368 current->_raw_size += sofar - old_sofar;
2369 }
2370 #endif
2371
2372 #ifdef COFF_IMAGE_WITH_PE
2373 /* For PE we need to make sure we pad out to the aligned
2374 _raw_size, in case the caller only writes out data to the
2375 unaligned _raw_size. */
2376 if (pei_section_data (abfd, current)->virt_size < current->_raw_size)
2377 align_adjust = true;
2378 #endif
2379
2380 #ifdef _LIB
2381 /* Force .lib sections to start at zero. The vma is then
2382 incremented in coff_set_section_contents. This is right for
2383 SVR3.2. */
2384 if (strcmp (current->name, _LIB) == 0)
2385 bfd_set_section_vma (abfd, current, 0);
2386 #endif
2387
2388 previous = current;
2389 }
2390
2391 /* It is now safe to write to the output file. If we needed an
2392 alignment adjustment for the last section, then make sure that
2393 there is a byte at offset sofar. If there are no symbols and no
2394 relocs, then nothing follows the last section. If we don't force
2395 the last byte out, then the file may appear to be truncated. */
2396 if (align_adjust)
2397 {
2398 bfd_byte b;
2399
2400 b = 0;
2401 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
2402 || bfd_write (&b, 1, 1, abfd) != 1)
2403 return false;
2404 }
2405
2406 /* Make sure the relocations are aligned. We don't need to make
2407 sure that this byte exists, because it will only matter if there
2408 really are relocs. */
2409 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
2410
2411 obj_relocbase (abfd) = sofar;
2412 abfd->output_has_begun = true;
2413
2414 return true;
2415 }
2416
2417 #if 0
2418
2419 /* This can never work, because it is called too late--after the
2420 section positions have been set. I can't figure out what it is
2421 for, so I am going to disable it--Ian Taylor 20 March 1996. */
2422
2423 /* If .file, .text, .data, .bss symbols are missing, add them. */
2424 /* @@ Should we only be adding missing symbols, or overriding the aux
2425 values for existing section symbols? */
2426 static boolean
2427 coff_add_missing_symbols (abfd)
2428 bfd *abfd;
2429 {
2430 unsigned int nsyms = bfd_get_symcount (abfd);
2431 asymbol **sympp = abfd->outsymbols;
2432 asymbol **sympp2;
2433 unsigned int i;
2434 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
2435
2436 for (i = 0; i < nsyms; i++)
2437 {
2438 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
2439 CONST char *name;
2440 if (csym)
2441 {
2442 /* only do this if there is a coff representation of the input
2443 symbol */
2444 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
2445 {
2446 need_file = 0;
2447 continue;
2448 }
2449 name = csym->symbol.name;
2450 if (!name)
2451 continue;
2452 if (!strcmp (name, _TEXT))
2453 need_text = 0;
2454 #ifdef APOLLO_M68
2455 else if (!strcmp (name, ".wtext"))
2456 need_text = 0;
2457 #endif
2458 else if (!strcmp (name, _DATA))
2459 need_data = 0;
2460 else if (!strcmp (name, _BSS))
2461 need_bss = 0;
2462 }
2463 }
2464 /* Now i == bfd_get_symcount (abfd). */
2465 /* @@ For now, don't deal with .file symbol. */
2466 need_file = 0;
2467
2468 if (!need_text && !need_data && !need_bss && !need_file)
2469 return true;
2470 nsyms += need_text + need_data + need_bss + need_file;
2471 sympp2 = (asymbol **) bfd_alloc (abfd, nsyms * sizeof (asymbol *));
2472 if (!sympp2)
2473 return false;
2474 memcpy (sympp2, sympp, i * sizeof (asymbol *));
2475 if (need_file)
2476 {
2477 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
2478 abort ();
2479 }
2480 if (need_text)
2481 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
2482 if (need_data)
2483 sympp2[i++] = coff_section_symbol (abfd, _DATA);
2484 if (need_bss)
2485 sympp2[i++] = coff_section_symbol (abfd, _BSS);
2486 BFD_ASSERT (i == nsyms);
2487 bfd_set_symtab (abfd, sympp2, nsyms);
2488 return true;
2489 }
2490
2491 #endif /* 0 */
2492
2493 /* SUPPRESS 558 */
2494 /* SUPPRESS 529 */
2495 static boolean
2496 coff_write_object_contents (abfd)
2497 bfd * abfd;
2498 {
2499 asection *current;
2500 boolean hasrelocs = false;
2501 boolean haslinno = false;
2502 file_ptr scn_base;
2503 file_ptr reloc_base;
2504 file_ptr lineno_base;
2505 file_ptr sym_base;
2506 unsigned long reloc_size = 0;
2507 unsigned long lnno_size = 0;
2508 boolean long_section_names;
2509 asection *text_sec = NULL;
2510 asection *data_sec = NULL;
2511 asection *bss_sec = NULL;
2512 struct internal_filehdr internal_f;
2513 struct internal_aouthdr internal_a;
2514 #ifdef COFF_LONG_SECTION_NAMES
2515 size_t string_size = STRING_SIZE_SIZE;
2516 #endif
2517
2518 bfd_set_error (bfd_error_system_call);
2519
2520 /* Make a pass through the symbol table to count line number entries and
2521 put them into the correct asections */
2522
2523 lnno_size = coff_count_linenumbers (abfd) * LINESZ;
2524
2525 if (abfd->output_has_begun == false)
2526 {
2527 if (! coff_compute_section_file_positions (abfd))
2528 return false;
2529 }
2530
2531 reloc_base = obj_relocbase (abfd);
2532
2533 /* Work out the size of the reloc and linno areas */
2534
2535 for (current = abfd->sections; current != NULL; current =
2536 current->next)
2537 reloc_size += current->reloc_count * RELSZ;
2538
2539 lineno_base = reloc_base + reloc_size;
2540 sym_base = lineno_base + lnno_size;
2541
2542 /* Indicate in each section->line_filepos its actual file address */
2543 for (current = abfd->sections; current != NULL; current =
2544 current->next)
2545 {
2546 if (current->lineno_count)
2547 {
2548 current->line_filepos = lineno_base;
2549 current->moving_line_filepos = lineno_base;
2550 lineno_base += current->lineno_count * LINESZ;
2551 }
2552 else
2553 {
2554 current->line_filepos = 0;
2555 }
2556 if (current->reloc_count)
2557 {
2558 current->rel_filepos = reloc_base;
2559 reloc_base += current->reloc_count * RELSZ;
2560 }
2561 else
2562 {
2563 current->rel_filepos = 0;
2564 }
2565 }
2566
2567 /* Write section headers to the file. */
2568 internal_f.f_nscns = 0;
2569
2570 if ((abfd->flags & EXEC_P) != 0)
2571 scn_base = FILHSZ + AOUTSZ;
2572 else
2573 {
2574 scn_base = FILHSZ;
2575 #ifdef RS6000COFF_C
2576 if (xcoff_data (abfd)->full_aouthdr)
2577 scn_base += AOUTSZ;
2578 else
2579 scn_base += SMALL_AOUTSZ;
2580 #endif
2581 }
2582
2583 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
2584 return false;
2585
2586 long_section_names = false;
2587 for (current = abfd->sections;
2588 current != NULL;
2589 current = current->next)
2590 {
2591 struct internal_scnhdr section;
2592
2593 #ifdef COFF_WITH_PE
2594 /* If we've got a .reloc section, remember. */
2595
2596 #ifdef COFF_IMAGE_WITH_PE
2597 if (strcmp (current->name, ".reloc") == 0)
2598 {
2599 pe_data (abfd)->has_reloc_section = 1;
2600 }
2601 #endif
2602
2603 #endif
2604 internal_f.f_nscns++;
2605
2606 strncpy (section.s_name, current->name, SCNNMLEN);
2607
2608 #ifdef COFF_LONG_SECTION_NAMES
2609 /* Handle long section names as in PE. This must be compatible
2610 with the code in coff_write_symbols. */
2611 {
2612 size_t len;
2613
2614 len = strlen (current->name);
2615 if (len > SCNNMLEN)
2616 {
2617 memset (section.s_name, 0, SCNNMLEN);
2618 sprintf (section.s_name, "/%lu", (unsigned long) string_size);
2619 string_size += len + 1;
2620 long_section_names = true;
2621 }
2622 }
2623 #endif
2624
2625 #ifdef _LIB
2626 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
2627 Ian Taylor <ian@cygnus.com>. */
2628 if (strcmp (current->name, _LIB) == 0)
2629 section.s_vaddr = 0;
2630 else
2631 #endif
2632 section.s_vaddr = current->vma;
2633 section.s_paddr = current->lma;
2634 section.s_size = current->_raw_size;
2635
2636 #ifdef COFF_WITH_PE
2637 section.s_paddr = 0;
2638 #endif
2639 #ifdef COFF_IMAGE_WITH_PE
2640 /* Reminder: s_paddr holds the virtual size of the section. */
2641 if (coff_section_data (abfd, current) != NULL
2642 && pei_section_data (abfd, current) != NULL)
2643 section.s_paddr = pei_section_data (abfd, current)->virt_size;
2644 else
2645 section.s_paddr = 0;
2646 #endif
2647
2648 /*
2649 If this section has no size or is unloadable then the scnptr
2650 will be 0 too
2651 */
2652 if (current->_raw_size == 0 ||
2653 (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2654 {
2655 section.s_scnptr = 0;
2656 }
2657 else
2658 {
2659 section.s_scnptr = current->filepos;
2660 }
2661 section.s_relptr = current->rel_filepos;
2662 section.s_lnnoptr = current->line_filepos;
2663 section.s_nreloc = current->reloc_count;
2664 section.s_nlnno = current->lineno_count;
2665 if (current->reloc_count != 0)
2666 hasrelocs = true;
2667 if (current->lineno_count != 0)
2668 haslinno = true;
2669
2670 #ifdef RS6000COFF_C
2671 /* Indicate the use of an XCOFF overflow section header. */
2672 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2673 {
2674 section.s_nreloc = 0xffff;
2675 section.s_nlnno = 0xffff;
2676 }
2677 #endif
2678
2679 section.s_flags = sec_to_styp_flags (current->name, current->flags);
2680
2681 if (!strcmp (current->name, _TEXT))
2682 {
2683 text_sec = current;
2684 }
2685 else if (!strcmp (current->name, _DATA))
2686 {
2687 data_sec = current;
2688 }
2689 else if (!strcmp (current->name, _BSS))
2690 {
2691 bss_sec = current;
2692 }
2693
2694 #ifdef I960
2695 section.s_align = (current->alignment_power
2696 ? 1 << current->alignment_power
2697 : 0);
2698 /* start-sanitize-tic80 */
2699 #else
2700 #ifdef TIC80COFF
2701 section.s_flags |= (current->alignment_power & 0xF) << 8;
2702 #endif
2703 /* end-sanitize-tic80 */
2704 #endif
2705
2706 #ifdef COFF_IMAGE_WITH_PE
2707 /* suppress output of the sections if they are null. ld includes
2708 the bss and data sections even if there is no size assigned
2709 to them. NT loader doesn't like it if these section headers are
2710 included if the sections themselves are not needed */
2711 if (section.s_size == 0)
2712 internal_f.f_nscns--;
2713 else
2714 #endif
2715 {
2716 SCNHDR buff;
2717 if (coff_swap_scnhdr_out (abfd, &section, &buff) == 0
2718 || bfd_write ((PTR) (&buff), 1, SCNHSZ, abfd) != SCNHSZ)
2719 return false;
2720 }
2721
2722 #ifdef COFF_WITH_PE
2723 /* PE stores COMDAT section information in the symbol table. If
2724 this section is supposed to have some COMDAT info, track down
2725 the symbol in the symbol table and modify it. */
2726 if ((current->flags & SEC_LINK_ONCE) != 0)
2727 {
2728 unsigned int i, count;
2729 asymbol **psym;
2730 coff_symbol_type *csym;
2731
2732 count = bfd_get_symcount (abfd);
2733 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
2734 {
2735 /* Here *PSYM is the section symbol for CURRENT. */
2736
2737 if (strcmp ((*psym)->name, current->name) == 0)
2738 {
2739 csym = coff_symbol_from (abfd, *psym);
2740 if (csym == NULL
2741 || csym->native == NULL
2742 || csym->native->u.syment.n_numaux < 1
2743 || csym->native->u.syment.n_sclass != C_STAT
2744 || csym->native->u.syment.n_type != T_NULL)
2745 continue;
2746 break;
2747 }
2748 }
2749
2750 /* Did we find it?
2751 Note that we might not if we're converting the file from
2752 some other object file format. */
2753 if (i < count)
2754 {
2755 combined_entry_type *aux;
2756
2757 /* We don't touch the x_checksum field. The
2758 x_associated field is not currently supported. */
2759
2760 aux = csym->native + 1;
2761 switch (current->flags & SEC_LINK_DUPLICATES)
2762 {
2763 case SEC_LINK_DUPLICATES_DISCARD:
2764 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
2765 break;
2766
2767 case SEC_LINK_DUPLICATES_ONE_ONLY:
2768 aux->u.auxent.x_scn.x_comdat =
2769 IMAGE_COMDAT_SELECT_NODUPLICATES;
2770 break;
2771
2772 case SEC_LINK_DUPLICATES_SAME_SIZE:
2773 aux->u.auxent.x_scn.x_comdat =
2774 IMAGE_COMDAT_SELECT_SAME_SIZE;
2775 break;
2776
2777 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
2778 aux->u.auxent.x_scn.x_comdat =
2779 IMAGE_COMDAT_SELECT_EXACT_MATCH;
2780 break;
2781 }
2782 }
2783 }
2784 #endif /* COFF_WITH_PE */
2785 }
2786
2787 #ifdef RS6000COFF_C
2788 /* XCOFF handles overflows in the reloc and line number count fields
2789 by creating a new section header to hold the correct values. */
2790 for (current = abfd->sections; current != NULL; current = current->next)
2791 {
2792 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2793 {
2794 struct internal_scnhdr scnhdr;
2795 SCNHDR buff;
2796
2797 internal_f.f_nscns++;
2798 strncpy (&(scnhdr.s_name[0]), current->name, 8);
2799 scnhdr.s_paddr = current->reloc_count;
2800 scnhdr.s_vaddr = current->lineno_count;
2801 scnhdr.s_size = 0;
2802 scnhdr.s_scnptr = 0;
2803 scnhdr.s_relptr = current->rel_filepos;
2804 scnhdr.s_lnnoptr = current->line_filepos;
2805 scnhdr.s_nreloc = current->target_index;
2806 scnhdr.s_nlnno = current->target_index;
2807 scnhdr.s_flags = STYP_OVRFLO;
2808 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
2809 || bfd_write ((PTR) &buff, 1, SCNHSZ, abfd) != SCNHSZ)
2810 return false;
2811 }
2812 }
2813 #endif
2814
2815 /* OK, now set up the filehdr... */
2816
2817 /* Don't include the internal abs section in the section count */
2818
2819 /*
2820 We will NOT put a fucking timestamp in the header here. Every time you
2821 put it back, I will come in and take it out again. I'm sorry. This
2822 field does not belong here. We fill it with a 0 so it compares the
2823 same but is not a reasonable time. -- gnu@cygnus.com
2824 */
2825 internal_f.f_timdat = 0;
2826
2827 internal_f.f_flags = 0;
2828
2829 if (abfd->flags & EXEC_P)
2830 internal_f.f_opthdr = AOUTSZ;
2831 else
2832 {
2833 internal_f.f_opthdr = 0;
2834 #ifdef RS6000COFF_C
2835 if (xcoff_data (abfd)->full_aouthdr)
2836 internal_f.f_opthdr = AOUTSZ;
2837 else
2838 internal_f.f_opthdr = SMALL_AOUTSZ;
2839 #endif
2840 }
2841
2842 if (!hasrelocs)
2843 internal_f.f_flags |= F_RELFLG;
2844 if (!haslinno)
2845 internal_f.f_flags |= F_LNNO;
2846 if (abfd->flags & EXEC_P)
2847 internal_f.f_flags |= F_EXEC;
2848
2849 /* FIXME: this is wrong for PPC_PE! */
2850 if (bfd_little_endian (abfd))
2851 internal_f.f_flags |= F_AR32WR;
2852 else
2853 internal_f.f_flags |= F_AR32W;
2854
2855 /* start-sanitize-tic80 */
2856 #ifdef TIC80_TARGET_ID
2857 internal_f.f_target_id = TIC80_TARGET_ID;
2858 #endif
2859 /* end-sanitize-tic80 */
2860
2861 /*
2862 FIXME, should do something about the other byte orders and
2863 architectures.
2864 */
2865
2866 #ifdef RS6000COFF_C
2867 if ((abfd->flags & DYNAMIC) != 0)
2868 internal_f.f_flags |= F_SHROBJ;
2869 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
2870 internal_f.f_flags |= F_DYNLOAD;
2871 #endif
2872
2873 memset (&internal_a, 0, sizeof internal_a);
2874
2875 /* Set up architecture-dependent stuff */
2876
2877 {
2878 unsigned int magic = 0;
2879 unsigned short flags = 0;
2880 coff_set_flags (abfd, &magic, &flags);
2881 internal_f.f_magic = magic;
2882 internal_f.f_flags |= flags;
2883 /* ...and the "opt"hdr... */
2884
2885 #ifdef A29K
2886 #ifdef ULTRA3 /* NYU's machine */
2887 /* FIXME: This is a bogus check. I really want to see if there
2888 * is a .shbss or a .shdata section, if so then set the magic
2889 * number to indicate a shared data executable.
2890 */
2891 if (internal_f.f_nscns >= 7)
2892 internal_a.magic = SHMAGIC; /* Shared magic */
2893 else
2894 #endif /* ULTRA3 */
2895 internal_a.magic = NMAGIC; /* Assume separate i/d */
2896 #define __A_MAGIC_SET__
2897 #endif /* A29K */
2898 /* start-sanitize-tic80 */
2899 #ifdef TIC80COFF
2900 internal_a.magic = TIC80_ARCH_MAGIC;
2901 #define __A_MAGIC_SET__
2902 #endif /* TIC80 */
2903 /* end-sanitize-tic80 */
2904 #ifdef I860
2905 /* FIXME: What are the a.out magic numbers for the i860? */
2906 internal_a.magic = 0;
2907 #define __A_MAGIC_SET__
2908 #endif /* I860 */
2909 #ifdef I960
2910 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
2911 #define __A_MAGIC_SET__
2912 #endif /* I960 */
2913 #if M88
2914 #define __A_MAGIC_SET__
2915 internal_a.magic = PAGEMAGICBCS;
2916 #endif /* M88 */
2917
2918 #if APOLLO_M68
2919 #define __A_MAGIC_SET__
2920 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
2921 #endif
2922
2923 #if defined(M68) || defined(WE32K) || defined(M68K)
2924 #define __A_MAGIC_SET__
2925 #if defined(LYNXOS)
2926 internal_a.magic = LYNXCOFFMAGIC;
2927 #else
2928 #if defined(TARG_AUX)
2929 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
2930 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
2931 PAGEMAGICEXECSWAPPED);
2932 #else
2933 #if defined (PAGEMAGICPEXECPAGED)
2934 internal_a.magic = PAGEMAGICPEXECPAGED;
2935 #endif
2936 #endif /* TARG_AUX */
2937 #endif /* LYNXOS */
2938 #endif /* M68 || WE32K || M68K */
2939
2940 #if defined(ARM)
2941 #define __A_MAGIC_SET__
2942 internal_a.magic = ZMAGIC;
2943 #endif
2944
2945 #if defined(PPC_PE)
2946 #define __A_MAGIC_SET__
2947 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
2948 #endif
2949
2950 #if defined(I386)
2951 #define __A_MAGIC_SET__
2952 #if defined(LYNXOS)
2953 internal_a.magic = LYNXCOFFMAGIC;
2954 #else /* LYNXOS */
2955 internal_a.magic = ZMAGIC;
2956 #endif /* LYNXOS */
2957 #endif /* I386 */
2958
2959 #if defined(SPARC)
2960 #define __A_MAGIC_SET__
2961 #if defined(LYNXOS)
2962 internal_a.magic = LYNXCOFFMAGIC;
2963 #endif /* LYNXOS */
2964 #endif /* SPARC */
2965
2966 #ifdef RS6000COFF_C
2967 #define __A_MAGIC_SET__
2968 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
2969 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
2970 RS6K_AOUTHDR_OMAGIC;
2971 #endif
2972
2973 #ifndef __A_MAGIC_SET__
2974 #include "Your aouthdr magic number is not being set!"
2975 #else
2976 #undef __A_MAGIC_SET__
2977 #endif
2978 }
2979
2980 /* FIXME: Does anybody ever set this to another value? */
2981 internal_a.vstamp = 0;
2982
2983 /* Now should write relocs, strings, syms */
2984 obj_sym_filepos (abfd) = sym_base;
2985
2986 if (bfd_get_symcount (abfd) != 0)
2987 {
2988 int firstundef;
2989 #if 0
2990 if (!coff_add_missing_symbols (abfd))
2991 return false;
2992 #endif
2993 if (!coff_renumber_symbols (abfd, &firstundef))
2994 return false;
2995 coff_mangle_symbols (abfd);
2996 if (! coff_write_symbols (abfd))
2997 return false;
2998 if (! coff_write_linenumbers (abfd))
2999 return false;
3000 if (! coff_write_relocs (abfd, firstundef))
3001 return false;
3002 }
3003 #ifdef COFF_IMAGE_WITH_PE
3004 #ifdef PPC_PE
3005 else if ((abfd->flags & EXEC_P) != 0)
3006 {
3007 bfd_byte b;
3008
3009 /* PowerPC PE appears to require that all executable files be
3010 rounded up to the page size. */
3011 b = 0;
3012 if (bfd_seek (abfd,
3013 BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
3014 SEEK_SET) != 0
3015 || bfd_write (&b, 1, 1, abfd) != 1)
3016 return false;
3017 }
3018 #endif
3019 #endif
3020
3021 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
3022 backend linker, and obj_raw_syment_count is not valid until after
3023 coff_write_symbols is called. */
3024 if (obj_raw_syment_count (abfd) != 0)
3025 {
3026 internal_f.f_symptr = sym_base;
3027 #ifdef RS6000COFF_C
3028 /* AIX appears to require that F_RELFLG not be set if there are
3029 local symbols but no relocations. */
3030 internal_f.f_flags &=~ F_RELFLG;
3031 #endif
3032 }
3033 else
3034 {
3035 if (long_section_names)
3036 internal_f.f_symptr = sym_base;
3037 else
3038 internal_f.f_symptr = 0;
3039 internal_f.f_flags |= F_LSYMS;
3040 }
3041
3042 if (text_sec)
3043 {
3044 internal_a.tsize = bfd_get_section_size_before_reloc (text_sec);
3045 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
3046 }
3047 if (data_sec)
3048 {
3049 internal_a.dsize = bfd_get_section_size_before_reloc (data_sec);
3050 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
3051 }
3052 if (bss_sec)
3053 {
3054 internal_a.bsize = bfd_get_section_size_before_reloc (bss_sec);
3055 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
3056 internal_a.data_start = bss_sec->vma;
3057 }
3058
3059 internal_a.entry = bfd_get_start_address (abfd);
3060 internal_f.f_nsyms = obj_raw_syment_count (abfd);
3061
3062 #ifdef RS6000COFF_C
3063 if (xcoff_data (abfd)->full_aouthdr)
3064 {
3065 bfd_vma toc;
3066 asection *loader_sec;
3067
3068 internal_a.vstamp = 1;
3069
3070 internal_a.o_snentry = xcoff_data (abfd)->snentry;
3071 if (internal_a.o_snentry == 0)
3072 internal_a.entry = (bfd_vma) -1;
3073
3074 if (text_sec != NULL)
3075 {
3076 internal_a.o_sntext = text_sec->target_index;
3077 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
3078 }
3079 else
3080 {
3081 internal_a.o_sntext = 0;
3082 internal_a.o_algntext = 0;
3083 }
3084 if (data_sec != NULL)
3085 {
3086 internal_a.o_sndata = data_sec->target_index;
3087 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
3088 }
3089 else
3090 {
3091 internal_a.o_sndata = 0;
3092 internal_a.o_algndata = 0;
3093 }
3094 loader_sec = bfd_get_section_by_name (abfd, ".loader");
3095 if (loader_sec != NULL)
3096 internal_a.o_snloader = loader_sec->target_index;
3097 else
3098 internal_a.o_snloader = 0;
3099 if (bss_sec != NULL)
3100 internal_a.o_snbss = bss_sec->target_index;
3101 else
3102 internal_a.o_snbss = 0;
3103
3104 toc = xcoff_data (abfd)->toc;
3105 internal_a.o_toc = toc;
3106 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
3107
3108 internal_a.o_modtype = xcoff_data (abfd)->modtype;
3109 if (xcoff_data (abfd)->cputype != -1)
3110 internal_a.o_cputype = xcoff_data (abfd)->cputype;
3111 else
3112 {
3113 switch (bfd_get_arch (abfd))
3114 {
3115 case bfd_arch_rs6000:
3116 internal_a.o_cputype = 4;
3117 break;
3118 case bfd_arch_powerpc:
3119 if (bfd_get_mach (abfd) == 0)
3120 internal_a.o_cputype = 3;
3121 else
3122 internal_a.o_cputype = 1;
3123 break;
3124 default:
3125 abort ();
3126 }
3127 }
3128 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
3129 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
3130 }
3131 #endif
3132
3133 /* now write them */
3134 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
3135 return false;
3136 {
3137 char buff[FILHSZ];
3138 coff_swap_filehdr_out (abfd, (PTR) & internal_f, (PTR) buff);
3139 if (bfd_write ((PTR) buff, 1, FILHSZ, abfd) != FILHSZ)
3140 return false;
3141 }
3142 if (abfd->flags & EXEC_P)
3143 {
3144 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
3145 include/coff/pe.h sets AOUTSZ == sizeof(PEAOUTHDR)) */
3146 char buff[AOUTSZ];
3147 coff_swap_aouthdr_out (abfd, (PTR) & internal_a, (PTR) buff);
3148 if (bfd_write ((PTR) buff, 1, AOUTSZ, abfd) != AOUTSZ)
3149 return false;
3150 }
3151 #ifdef RS6000COFF_C
3152 else
3153 {
3154 AOUTHDR buff;
3155 size_t size;
3156
3157 /* XCOFF seems to always write at least a small a.out header. */
3158 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff);
3159 if (xcoff_data (abfd)->full_aouthdr)
3160 size = AOUTSZ;
3161 else
3162 size = SMALL_AOUTSZ;
3163 if (bfd_write ((PTR) &buff, 1, size, abfd) != size)
3164 return false;
3165 }
3166 #endif
3167
3168 return true;
3169 }
3170
3171 static boolean
3172 coff_set_section_contents (abfd, section, location, offset, count)
3173 bfd * abfd;
3174 sec_ptr section;
3175 PTR location;
3176 file_ptr offset;
3177 bfd_size_type count;
3178 {
3179 if (abfd->output_has_begun == false) /* set by bfd.c handler */
3180 {
3181 if (! coff_compute_section_file_positions (abfd))
3182 return false;
3183 }
3184
3185 #if defined(_LIB) && !defined(TARG_AUX)
3186
3187 /* The physical address field of a .lib section is used to hold the
3188 number of shared libraries in the section. This code counts the
3189 number of sections being written, and increments the lma field
3190 with the number.
3191
3192 I have found no documentation on the contents of this section.
3193 Experimentation indicates that the section contains zero or more
3194 records, each of which has the following structure:
3195
3196 - a (four byte) word holding the length of this record, in words,
3197 - a word that always seems to be set to "2",
3198 - the path to a shared library, null-terminated and then padded
3199 to a whole word boundary.
3200
3201 bfd_assert calls have been added to alert if an attempt is made
3202 to write a section which doesn't follow these assumptions. The
3203 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
3204 <robertl@arnet.com> (Thanks!).
3205
3206 Gvran Uddeborg <gvran@uddeborg.pp.se> */
3207
3208 if (strcmp (section->name, _LIB) == 0)
3209 {
3210 bfd_byte *rec, *recend;
3211
3212 rec = (bfd_byte *) location;
3213 recend = rec + count;
3214 while (rec < recend)
3215 {
3216 ++section->lma;
3217 rec += bfd_get_32 (abfd, rec) * 4;
3218 }
3219
3220 BFD_ASSERT (rec == recend);
3221 }
3222
3223 #endif
3224
3225 /* Don't write out bss sections - one way to do this is to
3226 see if the filepos has not been set. */
3227 if (section->filepos == 0)
3228 return true;
3229
3230 if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0)
3231 return false;
3232
3233 if (count != 0)
3234 {
3235 return (bfd_write (location, 1, count, abfd) == count) ? true : false;
3236 }
3237 return true;
3238 }
3239 #if 0
3240 static boolean
3241 coff_close_and_cleanup (abfd)
3242 bfd *abfd;
3243 {
3244 if (!bfd_read_p (abfd))
3245 switch (abfd->format)
3246 {
3247 case bfd_archive:
3248 if (!_bfd_write_archive_contents (abfd))
3249 return false;
3250 break;
3251 case bfd_object:
3252 if (!coff_write_object_contents (abfd))
3253 return false;
3254 break;
3255 default:
3256 bfd_set_error (bfd_error_invalid_operation);
3257 return false;
3258 }
3259
3260 /* We depend on bfd_close to free all the memory on the objalloc. */
3261 return true;
3262 }
3263
3264 #endif
3265
3266 static PTR
3267 buy_and_read (abfd, where, seek_direction, size)
3268 bfd *abfd;
3269 file_ptr where;
3270 int seek_direction;
3271 size_t size;
3272 {
3273 PTR area = (PTR) bfd_alloc (abfd, size);
3274 if (!area)
3275 return (NULL);
3276 if (bfd_seek (abfd, where, seek_direction) != 0
3277 || bfd_read (area, 1, size, abfd) != size)
3278 return (NULL);
3279 return (area);
3280 } /* buy_and_read() */
3281
3282 /*
3283 SUBSUBSECTION
3284 Reading linenumbers
3285
3286 Creating the linenumber table is done by reading in the entire
3287 coff linenumber table, and creating another table for internal use.
3288
3289 A coff linenumber table is structured so that each function
3290 is marked as having a line number of 0. Each line within the
3291 function is an offset from the first line in the function. The
3292 base of the line number information for the table is stored in
3293 the symbol associated with the function.
3294
3295 The information is copied from the external to the internal
3296 table, and each symbol which marks a function is marked by
3297 pointing its...
3298
3299 How does this work ?
3300
3301 */
3302
3303 static boolean
3304 coff_slurp_line_table (abfd, asect)
3305 bfd *abfd;
3306 asection *asect;
3307 {
3308 LINENO *native_lineno;
3309 alent *lineno_cache;
3310
3311 BFD_ASSERT (asect->lineno == (alent *) NULL);
3312
3313 native_lineno = (LINENO *) buy_and_read (abfd,
3314 asect->line_filepos,
3315 SEEK_SET,
3316 (size_t) (LINESZ *
3317 asect->lineno_count));
3318 lineno_cache =
3319 (alent *) bfd_alloc (abfd, (size_t) ((asect->lineno_count + 1) * sizeof (alent)));
3320 if (lineno_cache == NULL)
3321 return false;
3322 else
3323 {
3324 unsigned int counter = 0;
3325 alent *cache_ptr = lineno_cache;
3326 LINENO *src = native_lineno;
3327
3328 while (counter < asect->lineno_count)
3329 {
3330 struct internal_lineno dst;
3331 coff_swap_lineno_in (abfd, src, &dst);
3332 cache_ptr->line_number = dst.l_lnno;
3333
3334 if (cache_ptr->line_number == 0)
3335 {
3336 boolean warned;
3337 long symndx;
3338 coff_symbol_type *sym;
3339
3340 warned = false;
3341 symndx = dst.l_addr.l_symndx;
3342 if (symndx < 0 || symndx >= obj_raw_syment_count (abfd))
3343 {
3344 (*_bfd_error_handler)
3345 ("%s: warning: illegal symbol index %ld in line numbers",
3346 bfd_get_filename (abfd), dst.l_addr.l_symndx);
3347 symndx = 0;
3348 warned = true;
3349 }
3350 /* FIXME: We should not be casting between ints and
3351 pointers like this. */
3352 sym = ((coff_symbol_type *)
3353 ((symndx + obj_raw_syments (abfd))
3354 ->u.syment._n._n_n._n_zeroes));
3355 cache_ptr->u.sym = (asymbol *) sym;
3356 if (sym->lineno != NULL && ! warned)
3357 {
3358 (*_bfd_error_handler)
3359 ("%s: warning: duplicate line number information for `%s'",
3360 bfd_get_filename (abfd),
3361 bfd_asymbol_name (&sym->symbol));
3362 }
3363 sym->lineno = cache_ptr;
3364 }
3365 else
3366 {
3367 cache_ptr->u.offset = dst.l_addr.l_paddr
3368 - bfd_section_vma (abfd, asect);
3369 } /* If no linenumber expect a symbol index */
3370
3371 cache_ptr++;
3372 src++;
3373 counter++;
3374 }
3375 cache_ptr->line_number = 0;
3376
3377 }
3378 asect->lineno = lineno_cache;
3379 /* FIXME, free native_lineno here, or use alloca or something. */
3380 return true;
3381 }
3382
3383 static boolean
3384 coff_slurp_symbol_table (abfd)
3385 bfd * abfd;
3386 {
3387 combined_entry_type *native_symbols;
3388 coff_symbol_type *cached_area;
3389 unsigned int *table_ptr;
3390
3391 unsigned int number_of_symbols = 0;
3392
3393 if (obj_symbols (abfd))
3394 return true;
3395
3396 /* Read in the symbol table */
3397 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
3398 {
3399 return (false);
3400 } /* on error */
3401
3402 /* Allocate enough room for all the symbols in cached form */
3403 cached_area = ((coff_symbol_type *)
3404 bfd_alloc (abfd,
3405 (obj_raw_syment_count (abfd)
3406 * sizeof (coff_symbol_type))));
3407
3408 if (cached_area == NULL)
3409 return false;
3410 table_ptr = ((unsigned int *)
3411 bfd_alloc (abfd,
3412 (obj_raw_syment_count (abfd)
3413 * sizeof (unsigned int))));
3414
3415 if (table_ptr == NULL)
3416 return false;
3417 else
3418 {
3419 coff_symbol_type *dst = cached_area;
3420 unsigned int last_native_index = obj_raw_syment_count (abfd);
3421 unsigned int this_index = 0;
3422 while (this_index < last_native_index)
3423 {
3424 combined_entry_type *src = native_symbols + this_index;
3425 table_ptr[this_index] = number_of_symbols;
3426 dst->symbol.the_bfd = abfd;
3427
3428 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
3429 /* We use the native name field to point to the cached field. */
3430 src->u.syment._n._n_n._n_zeroes = (long) dst;
3431 dst->symbol.section = coff_section_from_bfd_index (abfd,
3432 src->u.syment.n_scnum);
3433 dst->symbol.flags = 0;
3434 dst->done_lineno = false;
3435
3436 switch (src->u.syment.n_sclass)
3437 {
3438 #ifdef I960
3439 case C_LEAFEXT:
3440 #if 0
3441 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
3442 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
3443 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
3444 #endif
3445 /* Fall through to next case */
3446
3447 #endif
3448
3449 case C_EXT:
3450 #ifdef ARM
3451 case C_THUMBEXT:
3452 case C_THUMBEXTFUNC:
3453 #endif
3454 #ifdef RS6000COFF_C
3455 case C_HIDEXT:
3456 #endif
3457 #ifdef C_SYSTEM
3458 case C_SYSTEM: /* System Wide variable */
3459 #endif
3460 #ifdef COFF_WITH_PE
3461 /* PE uses storage class 0x68 to denote a section symbol */
3462 case C_SECTION:
3463 /* PE uses storage class 0x67 for a weak external symbol. */
3464 case C_NT_WEAK:
3465 #endif
3466 if ((src->u.syment.n_scnum) == 0)
3467 {
3468 if ((src->u.syment.n_value) == 0)
3469 {
3470 dst->symbol.section = bfd_und_section_ptr;
3471 dst->symbol.value = 0;
3472 }
3473 else
3474 {
3475 dst->symbol.section = bfd_com_section_ptr;
3476 dst->symbol.value = (src->u.syment.n_value);
3477 }
3478 }
3479 else
3480 {
3481 /* Base the value as an index from the base of the
3482 section */
3483
3484 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
3485
3486 #if defined (COFF_WITH_PE) || defined (COFF_IMAGE_WITH_PE)
3487 /* PE sets the symbol to a value relative to the
3488 start of the section. */
3489 dst->symbol.value = src->u.syment.n_value;
3490 #else
3491 dst->symbol.value = (src->u.syment.n_value
3492 - dst->symbol.section->vma);
3493 #endif
3494
3495 if (ISFCN ((src->u.syment.n_type)))
3496 {
3497 /* A function ext does not go at the end of a
3498 file. */
3499 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
3500 }
3501 }
3502
3503 #ifdef RS6000COFF_C
3504 /* A C_HIDEXT symbol is not global. */
3505 if (src->u.syment.n_sclass == C_HIDEXT)
3506 dst->symbol.flags = BSF_LOCAL;
3507 /* A symbol with a csect entry should not go at the end. */
3508 if (src->u.syment.n_numaux > 0)
3509 dst->symbol.flags |= BSF_NOT_AT_END;
3510 #endif
3511
3512 #ifdef COFF_WITH_PE
3513 if (src->u.syment.n_sclass == C_NT_WEAK)
3514 dst->symbol.flags = BSF_WEAK;
3515 #endif
3516
3517 break;
3518
3519 case C_STAT: /* static */
3520 #ifdef I960
3521 case C_LEAFSTAT: /* static leaf procedure */
3522 #endif
3523 #ifdef ARM
3524 case C_THUMBSTAT: /* Thumb static */
3525 case C_THUMBLABEL: /* Thumb label */
3526 case C_THUMBSTATFUNC:/* Thumb static function */
3527 #endif
3528 case C_LABEL: /* label */
3529 if (src->u.syment.n_scnum == -2)
3530 dst->symbol.flags = BSF_DEBUGGING;
3531 else
3532 dst->symbol.flags = BSF_LOCAL;
3533
3534 /* Base the value as an index from the base of the
3535 section, if there is one. */
3536 if (dst->symbol.section)
3537 {
3538 #if defined (COFF_WITH_PE) || defined (COFF_IMAGE_WITH_PE)
3539 /* PE sets the symbol to a value relative to the
3540 start of the section. */
3541 dst->symbol.value = src->u.syment.n_value;
3542 #else
3543 dst->symbol.value = (src->u.syment.n_value
3544 - dst->symbol.section->vma);
3545 #endif
3546 }
3547 else
3548 dst->symbol.value = src->u.syment.n_value;
3549 break;
3550
3551 case C_MOS: /* member of structure */
3552 case C_EOS: /* end of structure */
3553 #ifdef NOTDEF /* C_AUTOARG has the same value */
3554 #ifdef C_GLBLREG
3555 case C_GLBLREG: /* A29k-specific storage class */
3556 #endif
3557 #endif
3558 case C_REGPARM: /* register parameter */
3559 case C_REG: /* register variable */
3560 /* start-sanitize-tic80 */
3561 #ifndef TIC80COFF
3562 /* end-sanitize-tic80 */
3563 #ifdef C_AUTOARG
3564 case C_AUTOARG: /* 960-specific storage class */
3565 #endif
3566 /* start-sanitize-tic80 */
3567 #endif
3568 /* end-sanitize-tic80 */
3569 case C_TPDEF: /* type definition */
3570 case C_ARG:
3571 case C_AUTO: /* automatic variable */
3572 case C_FIELD: /* bit field */
3573 case C_ENTAG: /* enumeration tag */
3574 case C_MOE: /* member of enumeration */
3575 case C_MOU: /* member of union */
3576 case C_UNTAG: /* union tag */
3577 dst->symbol.flags = BSF_DEBUGGING;
3578 dst->symbol.value = (src->u.syment.n_value);
3579 break;
3580
3581 case C_FILE: /* file name */
3582 case C_STRTAG: /* structure tag */
3583 #ifdef RS6000COFF_C
3584 case C_GSYM:
3585 case C_LSYM:
3586 case C_PSYM:
3587 case C_RSYM:
3588 case C_RPSYM:
3589 case C_STSYM:
3590 case C_BCOMM:
3591 case C_ECOMM:
3592 case C_DECL:
3593 case C_ENTRY:
3594 case C_FUN:
3595 case C_ESTAT:
3596 #endif
3597 dst->symbol.flags = BSF_DEBUGGING;
3598 dst->symbol.value = (src->u.syment.n_value);
3599 break;
3600
3601 #ifdef RS6000COFF_C
3602 case C_BINCL: /* beginning of include file */
3603 case C_EINCL: /* ending of include file */
3604 /* The value is actually a pointer into the line numbers
3605 of the file. We locate the line number entry, and
3606 set the section to the section which contains it, and
3607 the value to the index in that section. */
3608 {
3609 asection *sec;
3610
3611 dst->symbol.flags = BSF_DEBUGGING;
3612 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3613 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
3614 && ((file_ptr) (sec->line_filepos
3615 + sec->lineno_count * LINESZ)
3616 > (file_ptr) src->u.syment.n_value))
3617 break;
3618 if (sec == NULL)
3619 dst->symbol.value = 0;
3620 else
3621 {
3622 dst->symbol.section = sec;
3623 dst->symbol.value = ((src->u.syment.n_value
3624 - sec->line_filepos)
3625 / LINESZ);
3626 src->fix_line = 1;
3627 }
3628 }
3629 break;
3630
3631 case C_BSTAT:
3632 dst->symbol.flags = BSF_DEBUGGING;
3633
3634 /* The value is actually a symbol index. Save a pointer
3635 to the symbol instead of the index. FIXME: This
3636 should use a union. */
3637 src->u.syment.n_value =
3638 (long) (native_symbols + src->u.syment.n_value);
3639 dst->symbol.value = src->u.syment.n_value;
3640 src->fix_value = 1;
3641 break;
3642 #endif
3643
3644 case C_BLOCK: /* ".bb" or ".eb" */
3645 case C_FCN: /* ".bf" or ".ef" */
3646 case C_EFCN: /* physical end of function */
3647 dst->symbol.flags = BSF_LOCAL;
3648 #if defined (COFF_WITH_PE) || defined (COFF_IMAGE_WITH_PE)
3649 /* PE sets the symbol to a value relative to the start
3650 of the section. */
3651 dst->symbol.value = src->u.syment.n_value;
3652 #else
3653 /* Base the value as an index from the base of the
3654 section. */
3655 dst->symbol.value = (src->u.syment.n_value
3656 - dst->symbol.section->vma);
3657 #endif
3658 break;
3659
3660 case C_NULL:
3661 case C_EXTDEF: /* external definition */
3662 case C_ULABEL: /* undefined label */
3663 case C_USTATIC: /* undefined static */
3664 #ifndef COFF_WITH_PE
3665 /* C_LINE in regular coff is 0x68. NT has taken over this storage
3666 class to represent a section symbol */
3667 case C_LINE: /* line # reformatted as symbol table entry */
3668 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
3669 case C_ALIAS: /* duplicate tag */
3670 #endif
3671 /* start-sanitize-tic80 */
3672 /* New storage classes for TIc80 */
3673 #ifdef TIC80COFF
3674 case C_UEXT: /* Tentative external definition */
3675 #endif
3676 case C_STATLAB: /* Static load time label */
3677 case C_EXTLAB: /* External load time label */
3678 /* end-sanitize-tic80 */
3679 case C_HIDDEN: /* ext symbol in dmert public lib */
3680 default:
3681 (*_bfd_error_handler)
3682 ("%s: Unrecognized storage class %d for %s symbol `%s'",
3683 bfd_get_filename (abfd), src->u.syment.n_sclass,
3684 dst->symbol.section->name, dst->symbol.name);
3685 dst->symbol.flags = BSF_DEBUGGING;
3686 dst->symbol.value = (src->u.syment.n_value);
3687 break;
3688 }
3689
3690 /* BFD_ASSERT(dst->symbol.flags != 0);*/
3691
3692 dst->native = src;
3693
3694 dst->symbol.udata.i = 0;
3695 dst->lineno = (alent *) NULL;
3696 this_index += (src->u.syment.n_numaux) + 1;
3697 dst++;
3698 number_of_symbols++;
3699 } /* walk the native symtab */
3700 } /* bfdize the native symtab */
3701
3702 obj_symbols (abfd) = cached_area;
3703 obj_raw_syments (abfd) = native_symbols;
3704
3705 bfd_get_symcount (abfd) = number_of_symbols;
3706 obj_convert (abfd) = table_ptr;
3707 /* Slurp the line tables for each section too */
3708 {
3709 asection *p;
3710 p = abfd->sections;
3711 while (p)
3712 {
3713 coff_slurp_line_table (abfd, p);
3714 p = p->next;
3715 }
3716 }
3717 return true;
3718 } /* coff_slurp_symbol_table() */
3719
3720 /* Check whether a symbol is globally visible. This is used by the
3721 COFF backend linker code in cofflink.c, since a couple of targets
3722 have globally visible symbols which are not class C_EXT. This
3723 function need not handle the case of n_class == C_EXT. */
3724
3725 #undef OTHER_GLOBAL_CLASS
3726
3727 #ifdef I960
3728 #define OTHER_GLOBAL_CLASS C_LEAFEXT
3729 #endif
3730
3731 #ifdef COFFARM
3732 #ifdef COFF_WITH_PE
3733 #define OTHER_GLOBAL_CLASS C_SECTION || syment->n_sclass == C_THUMBEXT
3734 #else
3735 #define OTHER_GLOBAL_CLASS C_THUMBEXT || syment->n_sclass == C_THUMBEXTFUNC
3736 #endif
3737 #else
3738 #ifdef COFF_WITH_PE
3739 #define OTHER_GLOBAL_CLASS C_SECTION
3740 #endif
3741 #endif
3742
3743 #ifdef OTHER_GLOBAL_CLASS
3744
3745 static boolean coff_sym_is_global PARAMS ((bfd *, struct internal_syment *));
3746
3747 static boolean
3748 coff_sym_is_global (abfd, syment)
3749 bfd * abfd;
3750 struct internal_syment * syment;
3751 {
3752 return (syment->n_sclass == OTHER_GLOBAL_CLASS);
3753 }
3754
3755 #undef OTHER_GLOBAL_CLASS
3756
3757 #else /* ! defined (OTHER_GLOBAL_CLASS) */
3758
3759 /* sym_is_global should not be defined if it has nothing to do. */
3760
3761 #define coff_sym_is_global 0
3762
3763 #endif /* ! defined (OTHER_GLOBAL_CLASS) */
3764
3765 /*
3766 SUBSUBSECTION
3767 Reading relocations
3768
3769 Coff relocations are easily transformed into the internal BFD form
3770 (@code{arelent}).
3771
3772 Reading a coff relocation table is done in the following stages:
3773
3774 o Read the entire coff relocation table into memory.
3775
3776 o Process each relocation in turn; first swap it from the
3777 external to the internal form.
3778
3779 o Turn the symbol referenced in the relocation's symbol index
3780 into a pointer into the canonical symbol table.
3781 This table is the same as the one returned by a call to
3782 @code{bfd_canonicalize_symtab}. The back end will call that
3783 routine and save the result if a canonicalization hasn't been done.
3784
3785 o The reloc index is turned into a pointer to a howto
3786 structure, in a back end specific way. For instance, the 386
3787 and 960 use the @code{r_type} to directly produce an index
3788 into a howto table vector; the 88k subtracts a number from the
3789 @code{r_type} field and creates an addend field.
3790
3791
3792 */
3793
3794 #ifndef CALC_ADDEND
3795 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
3796 { \
3797 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
3798 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
3799 coffsym = (obj_symbols (abfd) \
3800 + (cache_ptr->sym_ptr_ptr - symbols)); \
3801 else if (ptr) \
3802 coffsym = coff_symbol_from (abfd, ptr); \
3803 if (coffsym != (coff_symbol_type *) NULL \
3804 && coffsym->native->u.syment.n_scnum == 0) \
3805 cache_ptr->addend = 0; \
3806 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
3807 && ptr->section != (asection *) NULL) \
3808 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
3809 else \
3810 cache_ptr->addend = 0; \
3811 }
3812 #endif
3813
3814 static boolean
3815 coff_slurp_reloc_table (abfd, asect, symbols)
3816 bfd * abfd;
3817 sec_ptr asect;
3818 asymbol ** symbols;
3819 {
3820 RELOC *native_relocs;
3821 arelent *reloc_cache;
3822 arelent *cache_ptr;
3823
3824 unsigned int idx;
3825
3826 if (asect->relocation)
3827 return true;
3828 if (asect->reloc_count == 0)
3829 return true;
3830 if (asect->flags & SEC_CONSTRUCTOR)
3831 return true;
3832 if (!coff_slurp_symbol_table (abfd))
3833 return false;
3834 native_relocs =
3835 (RELOC *) buy_and_read (abfd,
3836 asect->rel_filepos,
3837 SEEK_SET,
3838 (size_t) (RELSZ *
3839 asect->reloc_count));
3840 reloc_cache = (arelent *)
3841 bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent)));
3842
3843 if (reloc_cache == NULL)
3844 return false;
3845
3846
3847 for (idx = 0; idx < asect->reloc_count; idx++)
3848 {
3849 struct internal_reloc dst;
3850 struct external_reloc *src;
3851 #ifndef RELOC_PROCESSING
3852 asymbol *ptr;
3853 #endif
3854
3855 cache_ptr = reloc_cache + idx;
3856 src = native_relocs + idx;
3857
3858 coff_swap_reloc_in (abfd, src, &dst);
3859
3860 #ifdef RELOC_PROCESSING
3861 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
3862 #else
3863 cache_ptr->address = dst.r_vaddr;
3864
3865 if (dst.r_symndx != -1)
3866 {
3867 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
3868 {
3869 (*_bfd_error_handler)
3870 ("%s: warning: illegal symbol index %ld in relocs",
3871 bfd_get_filename (abfd), dst.r_symndx);
3872 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
3873 ptr = NULL;
3874 }
3875 else
3876 {
3877 cache_ptr->sym_ptr_ptr = (symbols
3878 + obj_convert (abfd)[dst.r_symndx]);
3879 ptr = *(cache_ptr->sym_ptr_ptr);
3880 }
3881 }
3882 else
3883 {
3884 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
3885 ptr = NULL;
3886 }
3887
3888 /* The symbols definitions that we have read in have been
3889 relocated as if their sections started at 0. But the offsets
3890 refering to the symbols in the raw data have not been
3891 modified, so we have to have a negative addend to compensate.
3892
3893 Note that symbols which used to be common must be left alone */
3894
3895 /* Calculate any reloc addend by looking at the symbol */
3896 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
3897
3898 cache_ptr->address -= asect->vma;
3899 /* !! cache_ptr->section = (asection *) NULL;*/
3900
3901 /* Fill in the cache_ptr->howto field from dst.r_type */
3902 RTYPE2HOWTO (cache_ptr, &dst);
3903 #endif /* RELOC_PROCESSING */
3904
3905 if (cache_ptr->howto == NULL)
3906 {
3907 (*_bfd_error_handler)
3908 ("%s: illegal relocation type %d at address 0x%lx",
3909 bfd_get_filename (abfd), dst.r_type, (long) dst.r_vaddr);
3910 bfd_set_error (bfd_error_bad_value);
3911 return false;
3912 }
3913 }
3914
3915 asect->relocation = reloc_cache;
3916 return true;
3917 }
3918
3919 #ifndef coff_rtype_to_howto
3920 #ifdef RTYPE2HOWTO
3921
3922 /* Get the howto structure for a reloc. This is only used if the file
3923 including this one defines coff_relocate_section to be
3924 _bfd_coff_generic_relocate_section, so it is OK if it does not
3925 always work. It is the responsibility of the including file to
3926 make sure it is reasonable if it is needed. */
3927
3928 static reloc_howto_type *coff_rtype_to_howto
3929 PARAMS ((bfd *, asection *, struct internal_reloc *,
3930 struct coff_link_hash_entry *, struct internal_syment *,
3931 bfd_vma *));
3932
3933 /*ARGSUSED*/
3934 static reloc_howto_type *
3935 coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
3936 bfd *abfd;
3937 asection *sec;
3938 struct internal_reloc *rel;
3939 struct coff_link_hash_entry *h;
3940 struct internal_syment *sym;
3941 bfd_vma *addendp;
3942 {
3943 arelent genrel;
3944
3945 RTYPE2HOWTO (&genrel, rel);
3946 return genrel.howto;
3947 }
3948
3949 #else /* ! defined (RTYPE2HOWTO) */
3950
3951 #define coff_rtype_to_howto NULL
3952
3953 #endif /* ! defined (RTYPE2HOWTO) */
3954 #endif /* ! defined (coff_rtype_to_howto) */
3955
3956 /* This is stupid. This function should be a boolean predicate. */
3957 static long
3958 coff_canonicalize_reloc (abfd, section, relptr, symbols)
3959 bfd * abfd;
3960 sec_ptr section;
3961 arelent ** relptr;
3962 asymbol ** symbols;
3963 {
3964 arelent *tblptr = section->relocation;
3965 unsigned int count = 0;
3966
3967
3968 if (section->flags & SEC_CONSTRUCTOR)
3969 {
3970 /* this section has relocs made up by us, they are not in the
3971 file, so take them out of their chain and place them into
3972 the data area provided */
3973 arelent_chain *chain = section->constructor_chain;
3974 for (count = 0; count < section->reloc_count; count++)
3975 {
3976 *relptr++ = &chain->relent;
3977 chain = chain->next;
3978 }
3979
3980 }
3981 else
3982 {
3983 if (! coff_slurp_reloc_table (abfd, section, symbols))
3984 return -1;
3985
3986 tblptr = section->relocation;
3987
3988 for (; count++ < section->reloc_count;)
3989 *relptr++ = tblptr++;
3990
3991
3992 }
3993 *relptr = 0;
3994 return section->reloc_count;
3995 }
3996
3997 #ifdef GNU960
3998 file_ptr
3999 coff_sym_filepos (abfd)
4000 bfd *abfd;
4001 {
4002 return obj_sym_filepos (abfd);
4003 }
4004 #endif
4005
4006 #ifndef coff_reloc16_estimate
4007 #define coff_reloc16_estimate dummy_reloc16_estimate
4008
4009 static int dummy_reloc16_estimate
4010 PARAMS ((bfd *, asection *, arelent *, unsigned int,
4011 struct bfd_link_info *));
4012
4013 static int
4014 dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
4015 bfd *abfd;
4016 asection *input_section;
4017 arelent *reloc;
4018 unsigned int shrink;
4019 struct bfd_link_info *link_info;
4020 {
4021 abort ();
4022 }
4023
4024 #endif
4025
4026 #ifndef coff_reloc16_extra_cases
4027
4028 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
4029
4030 /* This works even if abort is not declared in any header file. */
4031
4032 static void dummy_reloc16_extra_cases
4033 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
4034 bfd_byte *, unsigned int *, unsigned int *));
4035
4036 static void
4037 dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
4038 dst_ptr)
4039 bfd *abfd;
4040 struct bfd_link_info *link_info;
4041 struct bfd_link_order *link_order;
4042 arelent *reloc;
4043 bfd_byte *data;
4044 unsigned int *src_ptr;
4045 unsigned int *dst_ptr;
4046 {
4047 abort ();
4048 }
4049 #endif
4050
4051 /* If coff_relocate_section is defined, we can use the optimized COFF
4052 backend linker. Otherwise we must continue to use the old linker. */
4053 #ifdef coff_relocate_section
4054 #ifndef coff_bfd_link_hash_table_create
4055 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
4056 #endif
4057 #ifndef coff_bfd_link_add_symbols
4058 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
4059 #endif
4060 #ifndef coff_bfd_final_link
4061 #define coff_bfd_final_link _bfd_coff_final_link
4062 #endif
4063 #else /* ! defined (coff_relocate_section) */
4064 #define coff_relocate_section NULL
4065 #ifndef coff_bfd_link_hash_table_create
4066 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
4067 #endif
4068 #ifndef coff_bfd_link_add_symbols
4069 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
4070 #endif
4071 #define coff_bfd_final_link _bfd_generic_final_link
4072 #endif /* ! defined (coff_relocate_section) */
4073
4074 #define coff_bfd_link_split_section _bfd_generic_link_split_section
4075
4076 #ifndef coff_start_final_link
4077 #define coff_start_final_link NULL
4078 #endif
4079
4080 #ifndef coff_adjust_symndx
4081 #define coff_adjust_symndx NULL
4082 #endif
4083
4084 #ifndef coff_link_add_one_symbol
4085 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
4086 #endif
4087
4088 #ifndef coff_link_output_has_begun
4089 #define coff_link_output_has_begun _coff_link_output_has_begun
4090 static boolean
4091 _coff_link_output_has_begun (abfd)
4092 bfd * abfd;
4093 {
4094 return abfd->output_has_begun;
4095 }
4096 #endif
4097
4098 #ifndef coff_final_link_postscript
4099 #define coff_final_link_postscript _coff_final_link_postscript
4100 static boolean
4101 _coff_final_link_postscript (abfd, pfinfo)
4102 bfd * abfd;
4103 struct coff_final_link_info * pfinfo;
4104 {
4105 return true;
4106 }
4107 #endif
4108
4109 #ifndef coff_SWAP_aux_in
4110 #define coff_SWAP_aux_in coff_swap_aux_in
4111 #endif
4112 #ifndef coff_SWAP_sym_in
4113 #define coff_SWAP_sym_in coff_swap_sym_in
4114 #endif
4115 #ifndef coff_SWAP_lineno_in
4116 #define coff_SWAP_lineno_in coff_swap_lineno_in
4117 #endif
4118 #ifndef coff_SWAP_aux_out
4119 #define coff_SWAP_aux_out coff_swap_aux_out
4120 #endif
4121 #ifndef coff_SWAP_sym_out
4122 #define coff_SWAP_sym_out coff_swap_sym_out
4123 #endif
4124 #ifndef coff_SWAP_lineno_out
4125 #define coff_SWAP_lineno_out coff_swap_lineno_out
4126 #endif
4127 #ifndef coff_SWAP_reloc_out
4128 #define coff_SWAP_reloc_out coff_swap_reloc_out
4129 #endif
4130 #ifndef coff_SWAP_filehdr_out
4131 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
4132 #endif
4133 #ifndef coff_SWAP_aouthdr_out
4134 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
4135 #endif
4136 #ifndef coff_SWAP_scnhdr_out
4137 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
4138 #endif
4139 #ifndef coff_SWAP_reloc_in
4140 #define coff_SWAP_reloc_in coff_swap_reloc_in
4141 #endif
4142 #ifndef coff_SWAP_filehdr_in
4143 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
4144 #endif
4145 #ifndef coff_SWAP_aouthdr_in
4146 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
4147 #endif
4148 #ifndef coff_SWAP_scnhdr_in
4149 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
4150 #endif
4151
4152
4153
4154 static CONST bfd_coff_backend_data bfd_coff_std_swap_table =
4155 {
4156 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
4157 coff_SWAP_aux_out, coff_SWAP_sym_out,
4158 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
4159 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
4160 coff_SWAP_scnhdr_out,
4161 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ,
4162 #ifdef COFF_LONG_FILENAMES
4163 true,
4164 #else
4165 false,
4166 #endif
4167 #ifdef COFF_LONG_SECTION_NAMES
4168 true,
4169 #else
4170 false,
4171 #endif
4172 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
4173 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
4174 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
4175 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
4176 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
4177 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
4178 coff_sym_is_global, coff_compute_section_file_positions,
4179 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
4180 coff_adjust_symndx, coff_link_add_one_symbol,
4181 coff_link_output_has_begun, coff_final_link_postscript
4182 };
4183
4184 #ifndef coff_close_and_cleanup
4185 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
4186 #endif
4187
4188 #ifndef coff_bfd_free_cached_info
4189 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
4190 #endif
4191
4192 #ifndef coff_get_section_contents
4193 #define coff_get_section_contents _bfd_generic_get_section_contents
4194 #endif
4195
4196 #ifndef coff_bfd_copy_private_symbol_data
4197 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
4198 #endif
4199
4200 #ifndef coff_bfd_copy_private_section_data
4201 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
4202 #endif
4203
4204 #ifndef coff_bfd_copy_private_bfd_data
4205 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
4206 #endif
4207
4208 #ifndef coff_bfd_merge_private_bfd_data
4209 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
4210 #endif
4211
4212 #ifndef coff_bfd_set_private_flags
4213 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
4214 #endif
4215
4216 #ifndef coff_bfd_print_private_bfd_data
4217 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
4218 #endif
4219
4220 #ifndef coff_bfd_is_local_label_name
4221 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
4222 #endif
4223
4224 #ifndef coff_read_minisymbols
4225 #define coff_read_minisymbols _bfd_generic_read_minisymbols
4226 #endif
4227
4228 #ifndef coff_minisymbol_to_symbol
4229 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
4230 #endif
4231
4232 /* The reloc lookup routine must be supplied by each individual COFF
4233 backend. */
4234 #ifndef coff_bfd_reloc_type_lookup
4235 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
4236 #endif
4237
4238 #ifndef coff_bfd_get_relocated_section_contents
4239 #define coff_bfd_get_relocated_section_contents \
4240 bfd_generic_get_relocated_section_contents
4241 #endif
4242
4243 #ifndef coff_bfd_relax_section
4244 #define coff_bfd_relax_section bfd_generic_relax_section
4245 #endif