Fix compile time warnings
[deliverable/binutils-gdb.git] / bfd / coffcode.h
1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22
23 /*
24 Most of this hacked by Steve Chamberlain,
25 sac@cygnus.com
26 */
27 /*
28
29 SECTION
30 coff backends
31
32 BFD supports a number of different flavours of coff format.
33 The major differences between formats are the sizes and
34 alignments of fields in structures on disk, and the occasional
35 extra field.
36
37 Coff in all its varieties is implemented with a few common
38 files and a number of implementation specific files. For
39 example, The 88k bcs coff format is implemented in the file
40 @file{coff-m88k.c}. This file @code{#include}s
41 @file{coff/m88k.h} which defines the external structure of the
42 coff format for the 88k, and @file{coff/internal.h} which
43 defines the internal structure. @file{coff-m88k.c} also
44 defines the relocations used by the 88k format
45 @xref{Relocations}.
46
47 The Intel i960 processor version of coff is implemented in
48 @file{coff-i960.c}. This file has the same structure as
49 @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
50 rather than @file{coff-m88k.h}.
51
52 SUBSECTION
53 Porting to a new version of coff
54
55 The recommended method is to select from the existing
56 implementations the version of coff which is most like the one
57 you want to use. For example, we'll say that i386 coff is
58 the one you select, and that your coff flavour is called foo.
59 Copy @file{i386coff.c} to @file{foocoff.c}, copy
60 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
61 and add the lines to @file{targets.c} and @file{Makefile.in}
62 so that your new back end is used. Alter the shapes of the
63 structures in @file{../include/coff/foo.h} so that they match
64 what you need. You will probably also have to add
65 @code{#ifdef}s to the code in @file{coff/internal.h} and
66 @file{coffcode.h} if your version of coff is too wild.
67
68 You can verify that your new BFD backend works quite simply by
69 building @file{objdump} from the @file{binutils} directory,
70 and making sure that its version of what's going on and your
71 host system's idea (assuming it has the pretty standard coff
72 dump utility, usually called @code{att-dump} or just
73 @code{dump}) are the same. Then clean up your code, and send
74 what you've done to Cygnus. Then your stuff will be in the
75 next release, and you won't have to keep integrating it.
76
77 SUBSECTION
78 How the coff backend works
79
80 SUBSUBSECTION
81 File layout
82
83 The Coff backend is split into generic routines that are
84 applicable to any Coff target and routines that are specific
85 to a particular target. The target-specific routines are
86 further split into ones which are basically the same for all
87 Coff targets except that they use the external symbol format
88 or use different values for certain constants.
89
90 The generic routines are in @file{coffgen.c}. These routines
91 work for any Coff target. They use some hooks into the target
92 specific code; the hooks are in a @code{bfd_coff_backend_data}
93 structure, one of which exists for each target.
94
95 The essentially similar target-specific routines are in
96 @file{coffcode.h}. This header file includes executable C code.
97 The various Coff targets first include the appropriate Coff
98 header file, make any special defines that are needed, and
99 then include @file{coffcode.h}.
100
101 Some of the Coff targets then also have additional routines in
102 the target source file itself.
103
104 For example, @file{coff-i960.c} includes
105 @file{coff/internal.h} and @file{coff/i960.h}. It then
106 defines a few constants, such as @code{I960}, and includes
107 @file{coffcode.h}. Since the i960 has complex relocation
108 types, @file{coff-i960.c} also includes some code to
109 manipulate the i960 relocs. This code is not in
110 @file{coffcode.h} because it would not be used by any other
111 target.
112
113 SUBSUBSECTION
114 Bit twiddling
115
116 Each flavour of coff supported in BFD has its own header file
117 describing the external layout of the structures. There is also
118 an internal description of the coff layout, in
119 @file{coff/internal.h}. A major function of the
120 coff backend is swapping the bytes and twiddling the bits to
121 translate the external form of the structures into the normal
122 internal form. This is all performed in the
123 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
124 elements are different sizes between different versions of
125 coff; it is the duty of the coff version specific include file
126 to override the definitions of various packing routines in
127 @file{coffcode.h}. E.g., the size of line number entry in coff is
128 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
129 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
130 correct one. No doubt, some day someone will find a version of
131 coff which has a varying field size not catered to at the
132 moment. To port BFD, that person will have to add more @code{#defines}.
133 Three of the bit twiddling routines are exported to
134 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
135 and @code{coff_swap_lineno_in}. @code{GDB} reads the symbol
136 table on its own, but uses BFD to fix things up. More of the
137 bit twiddlers are exported for @code{gas};
138 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
139 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
140 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
141 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
142 of all the symbol table and reloc drudgery itself, thereby
143 saving the internal BFD overhead, but uses BFD to swap things
144 on the way out, making cross ports much safer. Doing so also
145 allows BFD (and thus the linker) to use the same header files
146 as @code{gas}, which makes one avenue to disaster disappear.
147
148 SUBSUBSECTION
149 Symbol reading
150
151 The simple canonical form for symbols used by BFD is not rich
152 enough to keep all the information available in a coff symbol
153 table. The back end gets around this problem by keeping the original
154 symbol table around, "behind the scenes".
155
156 When a symbol table is requested (through a call to
157 @code{bfd_canonicalize_symtab}), a request gets through to
158 @code{coff_get_normalized_symtab}. This reads the symbol table from
159 the coff file and swaps all the structures inside into the
160 internal form. It also fixes up all the pointers in the table
161 (represented in the file by offsets from the first symbol in
162 the table) into physical pointers to elements in the new
163 internal table. This involves some work since the meanings of
164 fields change depending upon context: a field that is a
165 pointer to another structure in the symbol table at one moment
166 may be the size in bytes of a structure at the next. Another
167 pass is made over the table. All symbols which mark file names
168 (<<C_FILE>> symbols) are modified so that the internal
169 string points to the value in the auxent (the real filename)
170 rather than the normal text associated with the symbol
171 (@code{".file"}).
172
173 At this time the symbol names are moved around. Coff stores
174 all symbols less than nine characters long physically
175 within the symbol table; longer strings are kept at the end of
176 the file in the string table. This pass moves all strings
177 into memory and replaces them with pointers to the strings.
178
179 The symbol table is massaged once again, this time to create
180 the canonical table used by the BFD application. Each symbol
181 is inspected in turn, and a decision made (using the
182 @code{sclass} field) about the various flags to set in the
183 @code{asymbol}. @xref{Symbols}. The generated canonical table
184 shares strings with the hidden internal symbol table.
185
186 Any linenumbers are read from the coff file too, and attached
187 to the symbols which own the functions the linenumbers belong to.
188
189 SUBSUBSECTION
190 Symbol writing
191
192 Writing a symbol to a coff file which didn't come from a coff
193 file will lose any debugging information. The @code{asymbol}
194 structure remembers the BFD from which the symbol was taken, and on
195 output the back end makes sure that the same destination target as
196 source target is present.
197
198 When the symbols have come from a coff file then all the
199 debugging information is preserved.
200
201 Symbol tables are provided for writing to the back end in a
202 vector of pointers to pointers. This allows applications like
203 the linker to accumulate and output large symbol tables
204 without having to do too much byte copying.
205
206 This function runs through the provided symbol table and
207 patches each symbol marked as a file place holder
208 (@code{C_FILE}) to point to the next file place holder in the
209 list. It also marks each @code{offset} field in the list with
210 the offset from the first symbol of the current symbol.
211
212 Another function of this procedure is to turn the canonical
213 value form of BFD into the form used by coff. Internally, BFD
214 expects symbol values to be offsets from a section base; so a
215 symbol physically at 0x120, but in a section starting at
216 0x100, would have the value 0x20. Coff expects symbols to
217 contain their final value, so symbols have their values
218 changed at this point to reflect their sum with their owning
219 section. This transformation uses the
220 <<output_section>> field of the @code{asymbol}'s
221 @code{asection} @xref{Sections}.
222
223 o <<coff_mangle_symbols>>
224
225 This routine runs though the provided symbol table and uses
226 the offsets generated by the previous pass and the pointers
227 generated when the symbol table was read in to create the
228 structured hierachy required by coff. It changes each pointer
229 to a symbol into the index into the symbol table of the asymbol.
230
231 o <<coff_write_symbols>>
232
233 This routine runs through the symbol table and patches up the
234 symbols from their internal form into the coff way, calls the
235 bit twiddlers, and writes out the table to the file.
236
237 */
238
239 /*
240 INTERNAL_DEFINITION
241 coff_symbol_type
242
243 DESCRIPTION
244 The hidden information for an <<asymbol>> is described in a
245 <<combined_entry_type>>:
246
247 CODE_FRAGMENT
248 .
249 .typedef struct coff_ptr_struct
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 coff_slurp_symbol_table. *}
273 . unsigned int fix_line : 1;
274 .
275 . {* The container for the symbol structure as read and translated
276 . from the file. *}
277 . union
278 . {
279 . union internal_auxent auxent;
280 . struct internal_syment syment;
281 . } u;
282 .} combined_entry_type;
283 .
284 .
285 .{* Each canonical asymbol really looks like this: *}
286 .
287 .typedef struct coff_symbol_struct
288 .{
289 . {* The actual symbol which the rest of BFD works with *}
290 . asymbol symbol;
291 .
292 . {* A pointer to the hidden information for this symbol *}
293 . combined_entry_type *native;
294 .
295 . {* A pointer to the linenumber information for this symbol *}
296 . struct lineno_cache_entry *lineno;
297 .
298 . {* Have the line numbers been relocated yet ? *}
299 . boolean done_lineno;
300 .} coff_symbol_type;
301
302 */
303
304 #ifdef COFF_WITH_PE
305 #include "peicode.h"
306 #else
307 #include "coffswap.h"
308 #endif
309
310 #define STRING_SIZE_SIZE (4)
311
312 static long sec_to_styp_flags PARAMS ((const char *, flagword));
313 static boolean styp_to_sec_flags
314 PARAMS ((bfd *, PTR, const char *, asection *, flagword *));
315 static boolean coff_bad_format_hook PARAMS ((bfd *, PTR));
316 static void coff_set_custom_section_alignment
317 PARAMS ((bfd *, asection *, const struct coff_section_alignment_entry *,
318 const unsigned int));
319 static boolean coff_new_section_hook PARAMS ((bfd *, asection *));
320 static boolean coff_set_arch_mach_hook PARAMS ((bfd *, PTR));
321 static boolean coff_write_relocs PARAMS ((bfd *, int));
322 static boolean coff_set_flags
323 PARAMS ((bfd *, unsigned int *, unsigned short *));
324 static boolean coff_set_arch_mach
325 PARAMS ((bfd *, enum bfd_architecture, unsigned long)) ATTRIBUTE_UNUSED;
326 static boolean coff_compute_section_file_positions PARAMS ((bfd *));
327 static boolean coff_write_object_contents PARAMS ((bfd *)) ATTRIBUTE_UNUSED;
328 static boolean coff_set_section_contents
329 PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
330 static PTR buy_and_read PARAMS ((bfd *, file_ptr, bfd_size_type));
331 static boolean coff_slurp_line_table PARAMS ((bfd *, asection *));
332 static boolean coff_slurp_symbol_table PARAMS ((bfd *));
333 static enum coff_symbol_classification coff_classify_symbol
334 PARAMS ((bfd *, struct internal_syment *));
335 static boolean coff_slurp_reloc_table PARAMS ((bfd *, asection *, asymbol **));
336 static long coff_canonicalize_reloc
337 PARAMS ((bfd *, asection *, arelent **, asymbol **));
338 #ifndef coff_mkobject_hook
339 static PTR coff_mkobject_hook PARAMS ((bfd *, PTR, PTR));
340 #endif
341 #ifdef COFF_WITH_PE
342 static flagword handle_COMDAT PARAMS ((bfd *, flagword, PTR, const char *, asection *));
343 #endif
344 \f
345 /* void warning(); */
346
347 /* Return a word with STYP_* (scnhdr.s_flags) flags set to represent
348 the incoming SEC_* flags. The inverse of this function is
349 styp_to_sec_flags(). NOTE: If you add to/change this routine, you
350 should probably mirror the changes in styp_to_sec_flags(). */
351
352 #ifndef COFF_WITH_PE
353
354 /* Macros for setting debugging flags. */
355 #ifdef STYP_DEBUG
356 #define STYP_XCOFF_DEBUG STYP_DEBUG
357 #else
358 #define STYP_XCOFF_DEBUG STYP_INFO
359 #endif
360
361 #ifdef COFF_ALIGN_IN_S_FLAGS
362 #define STYP_DEBUG_INFO STYP_DSECT
363 #else
364 #define STYP_DEBUG_INFO STYP_INFO
365 #endif
366
367 static long
368 sec_to_styp_flags (sec_name, sec_flags)
369 const char *sec_name;
370 flagword sec_flags;
371 {
372 long styp_flags = 0;
373
374 if (!strcmp (sec_name, _TEXT))
375 {
376 styp_flags = STYP_TEXT;
377 }
378 else if (!strcmp (sec_name, _DATA))
379 {
380 styp_flags = STYP_DATA;
381 }
382 else if (!strcmp (sec_name, _BSS))
383 {
384 styp_flags = STYP_BSS;
385 #ifdef _COMMENT
386 }
387 else if (!strcmp (sec_name, _COMMENT))
388 {
389 styp_flags = STYP_INFO;
390 #endif /* _COMMENT */
391 #ifdef _LIB
392 }
393 else if (!strcmp (sec_name, _LIB))
394 {
395 styp_flags = STYP_LIB;
396 #endif /* _LIB */
397 #ifdef _LIT
398 }
399 else if (!strcmp (sec_name, _LIT))
400 {
401 styp_flags = STYP_LIT;
402 #endif /* _LIT */
403 }
404 else if (!strncmp (sec_name, ".debug", 6))
405 {
406 /* Handle the XCOFF debug section and DWARF2 debug sections. */
407 if (!sec_name[6])
408 styp_flags = STYP_XCOFF_DEBUG;
409 else
410 styp_flags = STYP_DEBUG_INFO;
411 }
412 else if (!strncmp (sec_name, ".stab", 5))
413 {
414 styp_flags = STYP_DEBUG_INFO;
415 }
416 #ifdef COFF_LONG_SECTION_NAMES
417 else if (!strncmp (sec_name, ".gnu.linkonce.wi.", 17))
418 {
419 styp_flags = STYP_DEBUG_INFO;
420 }
421 #endif
422 #ifdef RS6000COFF_C
423 else if (!strcmp (sec_name, _PAD))
424 {
425 styp_flags = STYP_PAD;
426 }
427 else if (!strcmp (sec_name, _LOADER))
428 {
429 styp_flags = STYP_LOADER;
430 }
431 #endif
432 /* Try and figure out what it should be */
433 else if (sec_flags & SEC_CODE)
434 {
435 styp_flags = STYP_TEXT;
436 }
437 else if (sec_flags & SEC_DATA)
438 {
439 styp_flags = STYP_DATA;
440 }
441 else if (sec_flags & SEC_READONLY)
442 {
443 #ifdef STYP_LIT /* 29k readonly text/data section */
444 styp_flags = STYP_LIT;
445 #else
446 styp_flags = STYP_TEXT;
447 #endif /* STYP_LIT */
448 }
449 else if (sec_flags & SEC_LOAD)
450 {
451 styp_flags = STYP_TEXT;
452 }
453 else if (sec_flags & SEC_ALLOC)
454 {
455 styp_flags = STYP_BSS;
456 }
457
458 #ifdef STYP_CLINK
459 if (sec_flags & SEC_CLINK)
460 styp_flags |= STYP_CLINK;
461 #endif
462
463 #ifdef STYP_BLOCK
464 if (sec_flags & SEC_BLOCK)
465 styp_flags |= STYP_BLOCK;
466 #endif
467
468 #ifdef STYP_NOLOAD
469 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
470 styp_flags |= STYP_NOLOAD;
471 #endif
472
473 return styp_flags;
474 }
475
476 #else /* COFF_WITH_PE */
477
478 /* The PE version; see above for the general comments. The non-PE
479 case seems to be more guessing, and breaks PE format; specifically,
480 .rdata is readonly, but it sure ain't text. Really, all this
481 should be set up properly in gas (or whatever assembler is in use),
482 and honor whatever objcopy/strip, etc. sent us as input. */
483
484 static long
485 sec_to_styp_flags (sec_name, sec_flags)
486 const char *sec_name ATTRIBUTE_UNUSED;
487 flagword sec_flags;
488 {
489 long styp_flags = 0;
490
491 /* caution: there are at least three groups of symbols that have
492 very similar bits and meanings: IMAGE_SCN*, SEC_*, and STYP_*.
493 SEC_* are the BFD internal flags, used for generic BFD
494 information. STYP_* are the COFF section flags which appear in
495 COFF files. IMAGE_SCN_* are the PE section flags which appear in
496 PE files. The STYP_* flags and the IMAGE_SCN_* flags overlap,
497 but there are more IMAGE_SCN_* flags. */
498
499 /* skip LOAD */
500 /* READONLY later */
501 /* skip RELOC */
502 if ((sec_flags & SEC_CODE) != 0)
503 styp_flags |= IMAGE_SCN_CNT_CODE;
504 if ((sec_flags & SEC_DATA) != 0)
505 styp_flags |= IMAGE_SCN_CNT_INITIALIZED_DATA;
506 if ((sec_flags & SEC_ALLOC) != 0 && (sec_flags & SEC_LOAD) == 0)
507 styp_flags |= IMAGE_SCN_CNT_UNINITIALIZED_DATA; /* ==STYP_BSS */
508 /* skip ROM */
509 /* skip constRUCTOR */
510 /* skip CONTENTS */
511 #ifdef STYP_NOLOAD
512 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
513 styp_flags |= STYP_NOLOAD;
514 #endif
515 if ((sec_flags & SEC_IS_COMMON) != 0)
516 styp_flags |= IMAGE_SCN_LNK_COMDAT;
517 if ((sec_flags & SEC_DEBUGGING) != 0)
518 styp_flags |= IMAGE_SCN_MEM_DISCARDABLE;
519 if ((sec_flags & SEC_EXCLUDE) != 0)
520 styp_flags |= IMAGE_SCN_LNK_REMOVE;
521 if ((sec_flags & SEC_NEVER_LOAD) != 0)
522 styp_flags |= IMAGE_SCN_LNK_REMOVE;
523 /* skip IN_MEMORY */
524 /* skip SORT */
525 if (sec_flags & SEC_LINK_ONCE)
526 styp_flags |= IMAGE_SCN_LNK_COMDAT;
527 /* skip LINK_DUPLICATES */
528 /* skip LINKER_CREATED */
529
530 /* For now, the read/write bits are mapped onto SEC_READONLY, even
531 though the semantics don't quite match. The bits from the input
532 are retained in pei_section_data(abfd, section)->pe_flags */
533
534 styp_flags |= IMAGE_SCN_MEM_READ; /* always readable. */
535 if ((sec_flags & SEC_READONLY) == 0)
536 styp_flags |= IMAGE_SCN_MEM_WRITE; /* Invert READONLY for write */
537 if (sec_flags & SEC_CODE)
538 styp_flags |= IMAGE_SCN_MEM_EXECUTE; /* CODE->EXECUTE */
539 if (sec_flags & SEC_SHARED)
540 styp_flags |= IMAGE_SCN_MEM_SHARED; /* Shared remains meaningful */
541
542 return styp_flags;
543 }
544
545 #endif /* COFF_WITH_PE */
546
547 /* Return a word with SEC_* flags set to represent the incoming STYP_*
548 flags (from scnhdr.s_flags). The inverse of this function is
549 sec_to_styp_flags(). NOTE: If you add to/change this routine, you
550 should probably mirror the changes in sec_to_styp_flags(). */
551
552 #ifndef COFF_WITH_PE
553
554 static boolean
555 styp_to_sec_flags (abfd, hdr, name, section, flags_ptr)
556 bfd *abfd ATTRIBUTE_UNUSED;
557 PTR hdr;
558 const char *name;
559 asection *section ATTRIBUTE_UNUSED;
560 flagword *flags_ptr;
561 {
562 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
563 long styp_flags = internal_s->s_flags;
564 flagword sec_flags = 0;
565
566 #ifdef STYP_BLOCK
567 if (styp_flags & STYP_BLOCK)
568 sec_flags |= SEC_BLOCK;
569 #endif
570
571 #ifdef STYP_CLINK
572 if (styp_flags & STYP_CLINK)
573 sec_flags |= SEC_CLINK;
574 #endif
575
576 #ifdef STYP_NOLOAD
577 if (styp_flags & STYP_NOLOAD)
578 sec_flags |= SEC_NEVER_LOAD;
579 #endif /* STYP_NOLOAD */
580
581 /* For 386 COFF, at least, an unloadable text or data section is
582 actually a shared library section. */
583 if (styp_flags & STYP_TEXT)
584 {
585 if (sec_flags & SEC_NEVER_LOAD)
586 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
587 else
588 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
589 }
590 else if (styp_flags & STYP_DATA)
591 {
592 if (sec_flags & SEC_NEVER_LOAD)
593 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
594 else
595 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
596 }
597 else if (styp_flags & STYP_BSS)
598 {
599 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
600 if (sec_flags & SEC_NEVER_LOAD)
601 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
602 else
603 #endif
604 sec_flags |= SEC_ALLOC;
605 }
606 else if (styp_flags & STYP_INFO)
607 {
608 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
609 defined. coff_compute_section_file_positions uses
610 COFF_PAGE_SIZE to ensure that the low order bits of the
611 section VMA and the file offset match. If we don't know
612 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
613 and demand page loading of the file will fail. */
614 #if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS)
615 sec_flags |= SEC_DEBUGGING;
616 #endif
617 }
618 else if (styp_flags & STYP_PAD)
619 sec_flags = 0;
620 else if (strcmp (name, _TEXT) == 0)
621 {
622 if (sec_flags & SEC_NEVER_LOAD)
623 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
624 else
625 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
626 }
627 else if (strcmp (name, _DATA) == 0)
628 {
629 if (sec_flags & SEC_NEVER_LOAD)
630 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
631 else
632 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
633 }
634 else if (strcmp (name, _BSS) == 0)
635 {
636 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
637 if (sec_flags & SEC_NEVER_LOAD)
638 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
639 else
640 #endif
641 sec_flags |= SEC_ALLOC;
642 }
643 else if (strncmp (name, ".debug", 6) == 0
644 #ifdef _COMMENT
645 || strcmp (name, _COMMENT) == 0
646 #endif
647 #ifdef COFF_LONG_SECTION_NAMES
648 || strncmp (name, ".gnu.linkonce.wi.", 17) == 0
649 #endif
650 || strncmp (name, ".stab", 5) == 0)
651 {
652 #ifdef COFF_PAGE_SIZE
653 sec_flags |= SEC_DEBUGGING;
654 #endif
655 }
656 #ifdef _LIB
657 else if (strcmp (name, _LIB) == 0)
658 ;
659 #endif
660 #ifdef _LIT
661 else if (strcmp (name, _LIT) == 0)
662 sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY;
663 #endif
664 else
665 sec_flags |= SEC_ALLOC | SEC_LOAD;
666
667 #ifdef STYP_LIT /* A29k readonly text/data section type */
668 if ((styp_flags & STYP_LIT) == STYP_LIT)
669 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
670 #endif /* STYP_LIT */
671
672 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
673 if (styp_flags & STYP_OTHER_LOAD)
674 sec_flags = (SEC_LOAD | SEC_ALLOC);
675 #endif /* STYP_SDATA */
676
677 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
678 /* As a GNU extension, if the name begins with .gnu.linkonce, we
679 only link a single copy of the section. This is used to support
680 g++. g++ will emit each template expansion in its own section.
681 The symbols will be defined as weak, so that multiple definitions
682 are permitted. The GNU linker extension is to actually discard
683 all but one of the sections. */
684 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
685 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
686 #endif
687
688 if (flags_ptr == NULL)
689 return false;
690
691 * flags_ptr = sec_flags;
692 return true;
693 }
694
695 #else /* COFF_WITH_PE */
696
697 static flagword
698 handle_COMDAT (abfd, sec_flags, hdr, name, section)
699 bfd * abfd;
700 flagword sec_flags;
701 PTR hdr;
702 const char *name;
703 asection *section;
704 {
705 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
706 bfd_byte *esymstart, *esym, *esymend;
707 int seen_state = 0;
708 char *target_name = NULL;
709
710 sec_flags |= SEC_LINK_ONCE;
711
712 /* Unfortunately, the PE format stores essential information in
713 the symbol table, of all places. We need to extract that
714 information now, so that objdump and the linker will know how
715 to handle the section without worrying about the symbols. We
716 can't call slurp_symtab, because the linker doesn't want the
717 swapped symbols. */
718
719 /* COMDAT sections are special. The first symbol is the section
720 symbol, which tells what kind of COMDAT section it is. The
721 second symbol is the "comdat symbol" - the one with the
722 unique name. GNU uses the section symbol for the unique
723 name; MS uses ".text" for every comdat section. Sigh. - DJ */
724
725 /* This is not mirrored in sec_to_styp_flags(), but there
726 doesn't seem to be a need to, either, and it would at best be
727 rather messy. */
728
729 if (! _bfd_coff_get_external_symbols (abfd))
730 return sec_flags;
731
732 esymstart = esym = (bfd_byte *) obj_coff_external_syms (abfd);
733 esymend = esym + obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd);
734
735 while (esym < esymend)
736 {
737 struct internal_syment isym;
738 char buf[SYMNMLEN + 1];
739 const char *symname;
740
741 bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &isym);
742
743 if (sizeof (internal_s->s_name) > SYMNMLEN)
744 {
745 /* This case implies that the matching
746 symbol name will be in the string table. */
747 abort ();
748 }
749
750 if (isym.n_scnum == section->target_index)
751 {
752 /* According to the MSVC documentation, the first
753 TWO entries with the section # are both of
754 interest to us. The first one is the "section
755 symbol" (section name). The second is the comdat
756 symbol name. Here, we've found the first
757 qualifying entry; we distinguish it from the
758 second with a state flag.
759
760 In the case of gas-generated (at least until that
761 is fixed) .o files, it isn't necessarily the
762 second one. It may be some other later symbol.
763
764 Since gas also doesn't follow MS conventions and
765 emits the section similar to .text$<name>, where
766 <something> is the name we're looking for, we
767 distinguish the two as follows:
768
769 If the section name is simply a section name (no
770 $) we presume it's MS-generated, and look at
771 precisely the second symbol for the comdat name.
772 If the section name has a $, we assume it's
773 gas-generated, and look for <something> (whatever
774 follows the $) as the comdat symbol. */
775
776 /* All 3 branches use this */
777 symname = _bfd_coff_internal_syment_name (abfd, &isym, buf);
778
779 if (symname == NULL)
780 abort ();
781
782 switch (seen_state)
783 {
784 case 0:
785 {
786 /* The first time we've seen the symbol. */
787 union internal_auxent aux;
788
789 seen_state = 1;
790
791 /* If it isn't the stuff we're expecting, die;
792 The MS documentation is vague, but it
793 appears that the second entry serves BOTH
794 as the comdat symbol and the defining
795 symbol record (either C_STAT or C_EXT,
796 possibly with an aux entry with debug
797 information if it's a function.) It
798 appears the only way to find the second one
799 is to count. (On Intel, they appear to be
800 adjacent, but on Alpha, they have been
801 found separated.)
802
803 Here, we think we've found the first one,
804 but there's some checking we can do to be
805 sure. */
806
807 if (! (isym.n_sclass == C_STAT
808 && isym.n_type == T_NULL
809 && isym.n_value == 0))
810 abort ();
811
812 /* FIXME LATER: MSVC generates section names
813 like .text for comdats. Gas generates
814 names like .text$foo__Fv (in the case of a
815 function). See comment above for more. */
816
817 if (strcmp (name, symname) != 0)
818 abort ();
819
820 /* This is the section symbol. */
821 bfd_coff_swap_aux_in (abfd, (PTR) (esym + bfd_coff_symesz (abfd)),
822 isym.n_type, isym.n_sclass,
823 0, isym.n_numaux, (PTR) &aux);
824
825 target_name = strchr (name, '$');
826 if (target_name != NULL)
827 {
828 /* Gas mode. */
829 seen_state = 2;
830 /* Skip the `$'. */
831 target_name += 1;
832 }
833
834 /* FIXME: Microsoft uses NODUPLICATES and
835 ASSOCIATIVE, but gnu uses ANY and
836 SAME_SIZE. Unfortunately, gnu doesn't do
837 the comdat symbols right. So, until we can
838 fix it to do the right thing, we are
839 temporarily disabling comdats for the MS
840 types (they're used in DLLs and C++, but we
841 don't support *their* C++ libraries anyway
842 - DJ. */
843
844 /* Cygwin does not follow the MS style, and
845 uses ANY and SAME_SIZE where NODUPLICATES
846 and ASSOCIATIVE should be used. For
847 Interix, we just do the right thing up
848 front. */
849
850 switch (aux.x_scn.x_comdat)
851 {
852 case IMAGE_COMDAT_SELECT_NODUPLICATES:
853 #ifdef STRICT_PE_FORMAT
854 sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
855 #else
856 sec_flags &= ~SEC_LINK_ONCE;
857 #endif
858 break;
859
860 case IMAGE_COMDAT_SELECT_ANY:
861 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
862 break;
863
864 case IMAGE_COMDAT_SELECT_SAME_SIZE:
865 sec_flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
866 break;
867
868 case IMAGE_COMDAT_SELECT_EXACT_MATCH:
869 /* Not yet fully implemented ??? */
870 sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
871 break;
872
873 /* debug$S gets this case; other
874 implications ??? */
875
876 /* There may be no symbol... we'll search
877 the whole table... Is this the right
878 place to play this game? Or should we do
879 it when reading it in. */
880 case IMAGE_COMDAT_SELECT_ASSOCIATIVE:
881 #ifdef STRICT_PE_FORMAT
882 /* FIXME: This is not currently implemented. */
883 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
884 #else
885 sec_flags &= ~SEC_LINK_ONCE;
886 #endif
887 break;
888
889 default: /* 0 means "no symbol" */
890 /* debug$F gets this case; other
891 implications ??? */
892 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
893 break;
894 }
895 }
896 break;
897
898 case 2:
899 /* Gas mode: the first matching on partial name. */
900
901 #ifndef TARGET_UNDERSCORE
902 #define TARGET_UNDERSCORE 0
903 #endif
904 /* Is this the name we're looking for? */
905 if (strcmp (target_name,
906 symname + (TARGET_UNDERSCORE ? 1 : 0)) != 0)
907 {
908 /* Not the name we're looking for */
909 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
910 continue;
911 }
912 /* Fall through. */
913 case 1:
914 /* MSVC mode: the lexically second symbol (or
915 drop through from the above). */
916 {
917 char *newname;
918 bfd_size_type amt;
919
920 /* This must the the second symbol with the
921 section #. It is the actual symbol name.
922 Intel puts the two adjacent, but Alpha (at
923 least) spreads them out. */
924
925 amt = sizeof (struct bfd_comdat_info);
926 section->comdat = bfd_alloc (abfd, amt);
927 if (section->comdat == NULL)
928 abort ();
929
930 section->comdat->symbol =
931 (esym - esymstart) / bfd_coff_symesz (abfd);
932
933 amt = strlen (symname) + 1;
934 newname = bfd_alloc (abfd, amt);
935 if (newname == NULL)
936 abort ();
937
938 strcpy (newname, symname);
939 section->comdat->name = newname;
940 }
941
942 goto breakloop;
943 }
944 }
945
946 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
947 }
948
949 breakloop:
950 return sec_flags;
951 }
952
953
954 /* The PE version; see above for the general comments.
955
956 Since to set the SEC_LINK_ONCE and associated flags, we have to
957 look at the symbol table anyway, we return the symbol table index
958 of the symbol being used as the COMDAT symbol. This is admittedly
959 ugly, but there's really nowhere else that we have access to the
960 required information. FIXME: Is the COMDAT symbol index used for
961 any purpose other than objdump? */
962
963 static boolean
964 styp_to_sec_flags (abfd, hdr, name, section, flags_ptr)
965 bfd *abfd;
966 PTR hdr;
967 const char *name;
968 asection *section;
969 flagword *flags_ptr;
970 {
971 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
972 long styp_flags = internal_s->s_flags;
973 flagword sec_flags;
974 boolean result = true;
975
976 /* Assume read only unless IMAGE_SCN_MEM_WRITE is specified. */
977 sec_flags = SEC_READONLY;
978
979 /* Process each flag bit in styp_flags in turn. */
980 while (styp_flags)
981 {
982 long flag = styp_flags & - styp_flags;
983 char * unhandled = NULL;
984
985 styp_flags &= ~ flag;
986
987 /* We infer from the distinct read/write/execute bits the settings
988 of some of the bfd flags; the actual values, should we need them,
989 are also in pei_section_data (abfd, section)->pe_flags. */
990
991 switch (flag)
992 {
993 case STYP_DSECT:
994 unhandled = "STYP_DSECT";
995 break;
996 case STYP_GROUP:
997 unhandled = "STYP_GROUP";
998 break;
999 case STYP_COPY:
1000 unhandled = "STYP_COPY";
1001 break;
1002 case STYP_OVER:
1003 unhandled = "STYP_OVER";
1004 break;
1005 #ifdef SEC_NEVER_LOAD
1006 case STYP_NOLOAD:
1007 sec_flags |= SEC_NEVER_LOAD;
1008 break;
1009 #endif
1010 case IMAGE_SCN_MEM_READ:
1011 /* Ignored, assume it always to be true. */
1012 break;
1013 case IMAGE_SCN_TYPE_NO_PAD:
1014 /* Skip. */
1015 break;
1016 case IMAGE_SCN_LNK_OTHER:
1017 unhandled = "IMAGE_SCN_LNK_OTHER";
1018 break;
1019 case IMAGE_SCN_MEM_NOT_CACHED:
1020 unhandled = "IMAGE_SCN_MEM_NOT_CACHED";
1021 break;
1022 case IMAGE_SCN_MEM_NOT_PAGED:
1023 unhandled = "IMAGE_SCN_MEM_NOT_PAGED";
1024 break;
1025 case IMAGE_SCN_MEM_EXECUTE:
1026 sec_flags |= SEC_CODE;
1027 break;
1028 case IMAGE_SCN_MEM_WRITE:
1029 sec_flags &= ~ SEC_READONLY;
1030 break;
1031 case IMAGE_SCN_MEM_DISCARDABLE:
1032 sec_flags |= SEC_DEBUGGING;
1033 break;
1034 case IMAGE_SCN_MEM_SHARED:
1035 sec_flags |= SEC_SHARED;
1036 break;
1037 case IMAGE_SCN_LNK_REMOVE:
1038 sec_flags |= SEC_EXCLUDE;
1039 break;
1040 case IMAGE_SCN_CNT_CODE:
1041 sec_flags |= SEC_CODE | SEC_ALLOC | SEC_LOAD;
1042 break;
1043 case IMAGE_SCN_CNT_INITIALIZED_DATA:
1044 sec_flags |= SEC_DATA | SEC_ALLOC | SEC_LOAD;
1045 break;
1046 case IMAGE_SCN_CNT_UNINITIALIZED_DATA:
1047 sec_flags |= SEC_ALLOC;
1048 break;
1049 case IMAGE_SCN_LNK_INFO:
1050 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
1051 defined. coff_compute_section_file_positions uses
1052 COFF_PAGE_SIZE to ensure that the low order bits of the
1053 section VMA and the file offset match. If we don't know
1054 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
1055 and demand page loading of the file will fail. */
1056 #ifdef COFF_PAGE_SIZE
1057 sec_flags |= SEC_DEBUGGING;
1058 #endif
1059 break;
1060 case IMAGE_SCN_LNK_COMDAT:
1061 /* COMDAT gets very special treatment. */
1062 sec_flags = handle_COMDAT (abfd, sec_flags, hdr, name, section);
1063 break;
1064 default:
1065 /* Silently ignore for now. */
1066 break;
1067 }
1068
1069 /* If the section flag was not handled, report it here. */
1070 if (unhandled != NULL)
1071 {
1072 (*_bfd_error_handler)
1073 (_("%s (%s): Section flag %s (0x%x) ignored"),
1074 bfd_archive_filename (abfd), name, unhandled, flag);
1075 result = false;
1076 }
1077 }
1078
1079 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
1080 /* As a GNU extension, if the name begins with .gnu.linkonce, we
1081 only link a single copy of the section. This is used to support
1082 g++. g++ will emit each template expansion in its own section.
1083 The symbols will be defined as weak, so that multiple definitions
1084 are permitted. The GNU linker extension is to actually discard
1085 all but one of the sections. */
1086 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
1087 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1088 #endif
1089
1090 if (flags_ptr)
1091 * flags_ptr = sec_flags;
1092
1093 return result;
1094 }
1095
1096 #endif /* COFF_WITH_PE */
1097
1098 #define get_index(symbol) ((symbol)->udata.i)
1099
1100 /*
1101 INTERNAL_DEFINITION
1102 bfd_coff_backend_data
1103
1104 CODE_FRAGMENT
1105
1106 .{* COFF symbol classifications. *}
1107 .
1108 .enum coff_symbol_classification
1109 .{
1110 . {* Global symbol. *}
1111 . COFF_SYMBOL_GLOBAL,
1112 . {* Common symbol. *}
1113 . COFF_SYMBOL_COMMON,
1114 . {* Undefined symbol. *}
1115 . COFF_SYMBOL_UNDEFINED,
1116 . {* Local symbol. *}
1117 . COFF_SYMBOL_LOCAL,
1118 . {* PE section symbol. *}
1119 . COFF_SYMBOL_PE_SECTION
1120 .};
1121 .
1122 Special entry points for gdb to swap in coff symbol table parts:
1123 .typedef struct
1124 .{
1125 . void (*_bfd_coff_swap_aux_in)
1126 . PARAMS ((bfd *, PTR, int, int, int, int, PTR));
1127 .
1128 . void (*_bfd_coff_swap_sym_in)
1129 . PARAMS ((bfd *, PTR, PTR));
1130 .
1131 . void (*_bfd_coff_swap_lineno_in)
1132 . PARAMS ((bfd *, PTR, PTR));
1133 .
1134 . unsigned int (*_bfd_coff_swap_aux_out)
1135 . PARAMS ((bfd *, PTR, int, int, int, int, PTR));
1136 .
1137 . unsigned int (*_bfd_coff_swap_sym_out)
1138 . PARAMS ((bfd *, PTR, PTR));
1139 .
1140 . unsigned int (*_bfd_coff_swap_lineno_out)
1141 . PARAMS ((bfd *, PTR, PTR));
1142 .
1143 . unsigned int (*_bfd_coff_swap_reloc_out)
1144 . PARAMS ((bfd *, PTR, PTR));
1145 .
1146 . unsigned int (*_bfd_coff_swap_filehdr_out)
1147 . PARAMS ((bfd *, PTR, PTR));
1148 .
1149 . unsigned int (*_bfd_coff_swap_aouthdr_out)
1150 . PARAMS ((bfd *, PTR, PTR));
1151 .
1152 . unsigned int (*_bfd_coff_swap_scnhdr_out)
1153 . PARAMS ((bfd *, PTR, PTR));
1154 .
1155 . unsigned int _bfd_filhsz;
1156 . unsigned int _bfd_aoutsz;
1157 . unsigned int _bfd_scnhsz;
1158 . unsigned int _bfd_symesz;
1159 . unsigned int _bfd_auxesz;
1160 . unsigned int _bfd_relsz;
1161 . unsigned int _bfd_linesz;
1162 . unsigned int _bfd_filnmlen;
1163 . boolean _bfd_coff_long_filenames;
1164 . boolean _bfd_coff_long_section_names;
1165 . unsigned int _bfd_coff_default_section_alignment_power;
1166 . boolean _bfd_coff_force_symnames_in_strings;
1167 . unsigned int _bfd_coff_debug_string_prefix_length;
1168 .
1169 . void (*_bfd_coff_swap_filehdr_in)
1170 . PARAMS ((bfd *, PTR, PTR));
1171 .
1172 . void (*_bfd_coff_swap_aouthdr_in)
1173 . PARAMS ((bfd *, PTR, PTR));
1174 .
1175 . void (*_bfd_coff_swap_scnhdr_in)
1176 . PARAMS ((bfd *, PTR, PTR));
1177 .
1178 . void (*_bfd_coff_swap_reloc_in)
1179 . PARAMS ((bfd *abfd, PTR, PTR));
1180 .
1181 . boolean (*_bfd_coff_bad_format_hook)
1182 . PARAMS ((bfd *, PTR));
1183 .
1184 . boolean (*_bfd_coff_set_arch_mach_hook)
1185 . PARAMS ((bfd *, PTR));
1186 .
1187 . PTR (*_bfd_coff_mkobject_hook)
1188 . PARAMS ((bfd *, PTR, PTR));
1189 .
1190 . boolean (*_bfd_styp_to_sec_flags_hook)
1191 . PARAMS ((bfd *, PTR, const char *, asection *, flagword *));
1192 .
1193 . void (*_bfd_set_alignment_hook)
1194 . PARAMS ((bfd *, asection *, PTR));
1195 .
1196 . boolean (*_bfd_coff_slurp_symbol_table)
1197 . PARAMS ((bfd *));
1198 .
1199 . boolean (*_bfd_coff_symname_in_debug)
1200 . PARAMS ((bfd *, struct internal_syment *));
1201 .
1202 . boolean (*_bfd_coff_pointerize_aux_hook)
1203 . PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
1204 . unsigned int, combined_entry_type *));
1205 .
1206 . boolean (*_bfd_coff_print_aux)
1207 . PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1208 . combined_entry_type *, unsigned int));
1209 .
1210 . void (*_bfd_coff_reloc16_extra_cases)
1211 . PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
1212 . bfd_byte *, unsigned int *, unsigned int *));
1213 .
1214 . int (*_bfd_coff_reloc16_estimate)
1215 . PARAMS ((bfd *, asection *, arelent *, unsigned int,
1216 . struct bfd_link_info *));
1217 .
1218 . enum coff_symbol_classification (*_bfd_coff_classify_symbol)
1219 . PARAMS ((bfd *, struct internal_syment *));
1220 .
1221 . boolean (*_bfd_coff_compute_section_file_positions)
1222 . PARAMS ((bfd *));
1223 .
1224 . boolean (*_bfd_coff_start_final_link)
1225 . PARAMS ((bfd *, struct bfd_link_info *));
1226 .
1227 . boolean (*_bfd_coff_relocate_section)
1228 . PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
1229 . struct internal_reloc *, struct internal_syment *, asection **));
1230 .
1231 . reloc_howto_type *(*_bfd_coff_rtype_to_howto)
1232 . PARAMS ((bfd *, asection *, struct internal_reloc *,
1233 . struct coff_link_hash_entry *, struct internal_syment *,
1234 . bfd_vma *));
1235 .
1236 . boolean (*_bfd_coff_adjust_symndx)\
1237 . PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
1238 . struct internal_reloc *, boolean *));
1239 .
1240 . boolean (*_bfd_coff_link_add_one_symbol)
1241 . PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword,
1242 . asection *, bfd_vma, const char *, boolean, boolean,
1243 . struct bfd_link_hash_entry **));
1244 .
1245 . boolean (*_bfd_coff_link_output_has_begun)
1246 . PARAMS ((bfd *, struct coff_final_link_info *));
1247 .
1248 . boolean (*_bfd_coff_final_link_postscript)
1249 . PARAMS ((bfd *, struct coff_final_link_info *));
1250 .
1251 .} bfd_coff_backend_data;
1252 .
1253 .#define coff_backend_info(abfd) \
1254 . ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1255 .
1256 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1257 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1258 .
1259 .#define bfd_coff_swap_sym_in(a,e,i) \
1260 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1261 .
1262 .#define bfd_coff_swap_lineno_in(a,e,i) \
1263 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1264 .
1265 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1266 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1267 .
1268 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1269 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1270 .
1271 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1272 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1273 .
1274 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1275 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1276 .
1277 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1278 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1279 .
1280 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1281 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1282 .
1283 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1284 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1285 .
1286 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1287 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1288 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1289 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1290 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1291 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
1292 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1293 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1294 .#define bfd_coff_long_filenames(abfd) \
1295 . (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1296 .#define bfd_coff_long_section_names(abfd) \
1297 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1298 .#define bfd_coff_default_section_alignment_power(abfd) \
1299 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1300 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1301 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1302 .
1303 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1304 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1305 .
1306 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1307 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1308 .
1309 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1310 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1311 .
1312 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1313 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1314 .
1315 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1316 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1317 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1318 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
1319 .
1320 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
1321 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1322 . (abfd, scnhdr, name, section, flags_ptr))
1323 .
1324 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1325 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1326 .
1327 .#define bfd_coff_slurp_symbol_table(abfd)\
1328 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1329 .
1330 .#define bfd_coff_symname_in_debug(abfd, sym)\
1331 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1332 .
1333 .#define bfd_coff_force_symnames_in_strings(abfd)\
1334 . (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
1335 .
1336 .#define bfd_coff_debug_string_prefix_length(abfd)\
1337 . (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
1338 .
1339 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1340 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1341 . (abfd, file, base, symbol, aux, indaux))
1342 .
1343 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
1344 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1345 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1346 .
1347 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1348 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1349 . (abfd, section, reloc, shrink, link_info))
1350 .
1351 .#define bfd_coff_classify_symbol(abfd, sym)\
1352 . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1353 . (abfd, sym))
1354 .
1355 .#define bfd_coff_compute_section_file_positions(abfd)\
1356 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1357 . (abfd))
1358 .
1359 .#define bfd_coff_start_final_link(obfd, info)\
1360 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1361 . (obfd, info))
1362 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1363 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1364 . (obfd, info, ibfd, o, con, rel, isyms, secs))
1365 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1366 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1367 . (abfd, sec, rel, h, sym, addendp))
1368 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1369 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1370 . (obfd, info, ibfd, sec, rel, adjustedp))
1371 .#define bfd_coff_link_add_one_symbol(info,abfd,name,flags,section,value,string,cp,coll,hashp)\
1372 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1373 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1374 .
1375 .#define bfd_coff_link_output_has_begun(a,p) \
1376 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
1377 .#define bfd_coff_final_link_postscript(a,p) \
1378 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
1379 .
1380 */
1381
1382 /* See whether the magic number matches. */
1383
1384 static boolean
1385 coff_bad_format_hook (abfd, filehdr)
1386 bfd * abfd ATTRIBUTE_UNUSED;
1387 PTR filehdr;
1388 {
1389 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1390
1391 if (BADMAG (*internal_f))
1392 return false;
1393
1394 /* if the optional header is NULL or not the correct size then
1395 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1396 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1397 optional header is of a different size.
1398
1399 But the mips keeps extra stuff in it's opthdr, so dont check
1400 when doing that
1401 */
1402
1403 #if defined(M88) || defined(I960)
1404 if (internal_f->f_opthdr != 0 && bfd_coff_aoutsz (abfd) != internal_f->f_opthdr)
1405 return false;
1406 #endif
1407
1408 return true;
1409 }
1410
1411 /* Check whether this section uses an alignment other than the
1412 default. */
1413
1414 static void
1415 coff_set_custom_section_alignment (abfd, section, alignment_table, table_size)
1416 bfd *abfd ATTRIBUTE_UNUSED;
1417 asection *section;
1418 const struct coff_section_alignment_entry *alignment_table;
1419 const unsigned int table_size;
1420 {
1421 const unsigned int default_alignment = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1422 unsigned int i;
1423
1424 for (i = 0; i < table_size; ++i)
1425 {
1426 const char *secname = bfd_get_section_name (abfd, section);
1427 if (alignment_table[i].comparison_length == (unsigned int) -1
1428 ? strcmp (alignment_table[i].name, secname) == 0
1429 : strncmp (alignment_table[i].name, secname,
1430 alignment_table[i].comparison_length) == 0)
1431 break;
1432 }
1433 if (i >= table_size)
1434 return;
1435
1436 if (alignment_table[i].default_alignment_min != COFF_ALIGNMENT_FIELD_EMPTY
1437 && default_alignment < alignment_table[i].default_alignment_min)
1438 return;
1439
1440 if (alignment_table[i].default_alignment_max != COFF_ALIGNMENT_FIELD_EMPTY
1441 #if COFF_DEFAULT_SECTION_ALIGNMENT_POWER != 0
1442 && default_alignment > alignment_table[i].default_alignment_max
1443 #endif
1444 )
1445 return;
1446
1447 section->alignment_power = alignment_table[i].alignment_power;
1448 }
1449
1450 /* Custom section alignment records. */
1451
1452 static const struct coff_section_alignment_entry
1453 coff_section_alignment_table[] =
1454 {
1455 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1456 COFF_SECTION_ALIGNMENT_ENTRIES,
1457 #endif
1458 /* There must not be any gaps between .stabstr sections. */
1459 { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1460 1, COFF_ALIGNMENT_FIELD_EMPTY, 0 },
1461 /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */
1462 { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1463 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1464 /* Similarly for the .ctors and .dtors sections. */
1465 { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1466 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1467 { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1468 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }
1469 };
1470
1471 static const unsigned int coff_section_alignment_table_size =
1472 sizeof coff_section_alignment_table / sizeof coff_section_alignment_table[0];
1473
1474 /* Initialize a section structure with information peculiar to this
1475 particular implementation of COFF. */
1476
1477 static boolean
1478 coff_new_section_hook (abfd, section)
1479 bfd * abfd;
1480 asection * section;
1481 {
1482 combined_entry_type *native;
1483 bfd_size_type amt;
1484
1485 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1486
1487 #ifdef RS6000COFF_C
1488 if (xcoff_data (abfd)->text_align_power != 0
1489 && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
1490 section->alignment_power = xcoff_data (abfd)->text_align_power;
1491 if (xcoff_data (abfd)->data_align_power != 0
1492 && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
1493 section->alignment_power = xcoff_data (abfd)->data_align_power;
1494 #endif
1495
1496 /* Allocate aux records for section symbols, to store size and
1497 related info.
1498
1499 @@ The 10 is a guess at a plausible maximum number of aux entries
1500 (but shouldn't be a constant). */
1501 amt = sizeof (combined_entry_type) * 10;
1502 native = (combined_entry_type *) bfd_zalloc (abfd, amt);
1503 if (native == NULL)
1504 return false;
1505
1506 /* We don't need to set up n_name, n_value, or n_scnum in the native
1507 symbol information, since they'll be overriden by the BFD symbol
1508 anyhow. However, we do need to set the type and storage class,
1509 in case this symbol winds up getting written out. The value 0
1510 for n_numaux is already correct. */
1511
1512 native->u.syment.n_type = T_NULL;
1513 native->u.syment.n_sclass = C_STAT;
1514
1515 coffsymbol (section->symbol)->native = native;
1516
1517 coff_set_custom_section_alignment (abfd, section,
1518 coff_section_alignment_table,
1519 coff_section_alignment_table_size);
1520
1521 return true;
1522 }
1523
1524 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1525
1526 /* Set the alignment of a BFD section. */
1527
1528 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1529
1530 static void
1531 coff_set_alignment_hook (abfd, section, scnhdr)
1532 bfd * abfd ATTRIBUTE_UNUSED;
1533 asection * section;
1534 PTR scnhdr;
1535 {
1536 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1537 unsigned int i;
1538
1539 #ifdef I960
1540 /* Extract ALIGN from 2**ALIGN stored in section header */
1541 for (i = 0; i < 32; i++)
1542 if ((1 << i) >= hdr->s_align)
1543 break;
1544 #endif
1545 #ifdef TIC80COFF
1546 /* TI tools puts the alignment power in bits 8-11 */
1547 i = (hdr->s_flags >> 8) & 0xF ;
1548 #endif
1549 #ifdef COFF_DECODE_ALIGNMENT
1550 i = COFF_DECODE_ALIGNMENT(hdr->s_flags);
1551 #endif
1552 section->alignment_power = i;
1553
1554 #ifdef coff_set_section_load_page
1555 coff_set_section_load_page (section, hdr->s_page);
1556 #endif
1557 }
1558
1559 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1560 #ifdef COFF_WITH_PE
1561
1562 /* a couple of macros to help setting the alignment power field */
1563 #define ALIGN_SET(field,x,y) \
1564 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
1565 {\
1566 section->alignment_power = y;\
1567 }
1568
1569 #define ELIFALIGN_SET(field,x,y) \
1570 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
1571 {\
1572 section->alignment_power = y;\
1573 }
1574
1575 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1576
1577 static void
1578 coff_set_alignment_hook (abfd, section, scnhdr)
1579 bfd * abfd ATTRIBUTE_UNUSED;
1580 asection * section;
1581 PTR scnhdr;
1582 {
1583 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1584 bfd_size_type amt;
1585
1586 ALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_64BYTES, 6)
1587 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_32BYTES, 5)
1588 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_16BYTES, 4)
1589 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_8BYTES, 3)
1590 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_4BYTES, 2)
1591 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_2BYTES, 1)
1592 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_1BYTES, 0)
1593
1594 /* In a PE image file, the s_paddr field holds the virtual size of a
1595 section, while the s_size field holds the raw size. We also keep
1596 the original section flag value, since not every bit can be
1597 mapped onto a generic BFD section bit. */
1598 if (coff_section_data (abfd, section) == NULL)
1599 {
1600 amt = sizeof (struct coff_section_tdata);
1601 section->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
1602 if (section->used_by_bfd == NULL)
1603 {
1604 /* FIXME: Return error. */
1605 abort ();
1606 }
1607 }
1608 if (pei_section_data (abfd, section) == NULL)
1609 {
1610 amt = sizeof (struct pei_section_tdata);
1611 coff_section_data (abfd, section)->tdata = (PTR) bfd_zalloc (abfd, amt);
1612 if (coff_section_data (abfd, section)->tdata == NULL)
1613 {
1614 /* FIXME: Return error. */
1615 abort ();
1616 }
1617 }
1618 pei_section_data (abfd, section)->virt_size = hdr->s_paddr;
1619 pei_section_data (abfd, section)->pe_flags = hdr->s_flags;
1620
1621 section->lma = hdr->s_vaddr;
1622
1623 /* check for extended relocs */
1624 if (hdr->s_flags & IMAGE_SCN_LNK_NRELOC_OVFL)
1625 {
1626 struct external_reloc dst;
1627 struct internal_reloc n;
1628 file_ptr oldpos = bfd_tell (abfd);
1629 bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0);
1630 if (bfd_bread ((PTR) &dst, (bfd_size_type) bfd_coff_relsz (abfd), abfd)
1631 != bfd_coff_relsz (abfd))
1632 return;
1633
1634 coff_swap_reloc_in (abfd, &dst, &n);
1635 bfd_seek (abfd, oldpos, 0);
1636 section->reloc_count = hdr->s_nreloc = n.r_vaddr;
1637 }
1638 }
1639 #undef ALIGN_SET
1640 #undef ELIFALIGN_SET
1641
1642 #else /* ! COFF_WITH_PE */
1643 #ifdef RS6000COFF_C
1644
1645 /* We grossly abuse this function to handle XCOFF overflow headers.
1646 When we see one, we correct the reloc and line number counts in the
1647 real header, and remove the section we just created. */
1648
1649 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1650
1651 static void
1652 coff_set_alignment_hook (abfd, section, scnhdr)
1653 bfd *abfd;
1654 asection *section;
1655 PTR scnhdr;
1656 {
1657 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1658 asection *real_sec;
1659 asection **ps;
1660
1661 if ((hdr->s_flags & STYP_OVRFLO) == 0)
1662 return;
1663
1664 real_sec = coff_section_from_bfd_index (abfd, (int) hdr->s_nreloc);
1665 if (real_sec == NULL)
1666 return;
1667
1668 real_sec->reloc_count = hdr->s_paddr;
1669 real_sec->lineno_count = hdr->s_vaddr;
1670
1671 for (ps = &abfd->sections; *ps != NULL; ps = &(*ps)->next)
1672 {
1673 if (*ps == section)
1674 {
1675 *ps = (*ps)->next;
1676 --abfd->section_count;
1677 break;
1678 }
1679 }
1680 }
1681
1682 #else /* ! RS6000COFF_C */
1683
1684 #define coff_set_alignment_hook \
1685 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1686
1687 #endif /* ! RS6000COFF_C */
1688 #endif /* ! COFF_WITH_PE */
1689 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1690
1691 #ifndef coff_mkobject
1692
1693 static boolean coff_mkobject PARAMS ((bfd *));
1694
1695 static boolean
1696 coff_mkobject (abfd)
1697 bfd * abfd;
1698 {
1699 coff_data_type *coff;
1700 bfd_size_type amt = sizeof (coff_data_type);
1701
1702 abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, amt);
1703 if (abfd->tdata.coff_obj_data == 0)
1704 return false;
1705 coff = coff_data (abfd);
1706 coff->symbols = (coff_symbol_type *) NULL;
1707 coff->conversion_table = (unsigned int *) NULL;
1708 coff->raw_syments = (struct coff_ptr_struct *) NULL;
1709 coff->relocbase = 0;
1710 coff->local_toc_sym_map = 0;
1711
1712 /* make_abs_section(abfd);*/
1713
1714 return true;
1715 }
1716 #endif
1717
1718 /* Create the COFF backend specific information. */
1719 #ifndef coff_mkobject_hook
1720 static PTR
1721 coff_mkobject_hook (abfd, filehdr, aouthdr)
1722 bfd * abfd;
1723 PTR filehdr;
1724 PTR aouthdr ATTRIBUTE_UNUSED;
1725 {
1726 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1727 coff_data_type *coff;
1728
1729 if (coff_mkobject (abfd) == false)
1730 return NULL;
1731
1732 coff = coff_data (abfd);
1733
1734 coff->sym_filepos = internal_f->f_symptr;
1735
1736 /* These members communicate important constants about the symbol
1737 table to GDB's symbol-reading code. These `constants'
1738 unfortunately vary among coff implementations... */
1739 coff->local_n_btmask = N_BTMASK;
1740 coff->local_n_btshft = N_BTSHFT;
1741 coff->local_n_tmask = N_TMASK;
1742 coff->local_n_tshift = N_TSHIFT;
1743 coff->local_symesz = bfd_coff_symesz (abfd);
1744 coff->local_auxesz = bfd_coff_auxesz (abfd);
1745 coff->local_linesz = bfd_coff_linesz (abfd);
1746
1747 coff->timestamp = internal_f->f_timdat;
1748
1749 obj_raw_syment_count (abfd) =
1750 obj_conv_table_size (abfd) =
1751 internal_f->f_nsyms;
1752
1753 #ifdef RS6000COFF_C
1754 if ((internal_f->f_flags & F_SHROBJ) != 0)
1755 abfd->flags |= DYNAMIC;
1756 if (aouthdr != NULL && internal_f->f_opthdr >= bfd_coff_aoutsz (abfd))
1757 {
1758 struct internal_aouthdr *internal_a =
1759 (struct internal_aouthdr *) aouthdr;
1760 struct xcoff_tdata *xcoff;
1761
1762 xcoff = xcoff_data (abfd);
1763 # ifdef U803XTOCMAGIC
1764 xcoff->xcoff64 = internal_f->f_magic == U803XTOCMAGIC;
1765 # else
1766 xcoff->xcoff64 = 0;
1767 # endif
1768 xcoff->full_aouthdr = true;
1769 xcoff->toc = internal_a->o_toc;
1770 xcoff->sntoc = internal_a->o_sntoc;
1771 xcoff->snentry = internal_a->o_snentry;
1772 xcoff->text_align_power = internal_a->o_algntext;
1773 xcoff->data_align_power = internal_a->o_algndata;
1774 xcoff->modtype = internal_a->o_modtype;
1775 xcoff->cputype = internal_a->o_cputype;
1776 xcoff->maxdata = internal_a->o_maxdata;
1777 xcoff->maxstack = internal_a->o_maxstack;
1778 }
1779 #endif
1780
1781 #ifdef ARM
1782 /* Set the flags field from the COFF header read in */
1783 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
1784 coff->flags = 0;
1785 #endif
1786
1787 #ifdef COFF_WITH_PE
1788 /* FIXME: I'm not sure this is ever executed, since peicode.h
1789 defines coff_mkobject_hook. */
1790 if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
1791 abfd->flags |= HAS_DEBUG;
1792 #endif
1793
1794 return (PTR) coff;
1795 }
1796 #endif
1797
1798 /* Determine the machine architecture and type. FIXME: This is target
1799 dependent because the magic numbers are defined in the target
1800 dependent header files. But there is no particular need for this.
1801 If the magic numbers were moved to a separate file, this function
1802 would be target independent and would also be much more successful
1803 at linking together COFF files for different architectures. */
1804
1805 static boolean
1806 coff_set_arch_mach_hook (abfd, filehdr)
1807 bfd *abfd;
1808 PTR filehdr;
1809 {
1810 unsigned long machine;
1811 enum bfd_architecture arch;
1812 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1813
1814 machine = 0;
1815 switch (internal_f->f_magic)
1816 {
1817 #ifdef PPCMAGIC
1818 case PPCMAGIC:
1819 arch = bfd_arch_powerpc;
1820 machine = 0; /* what does this mean? (krk) */
1821 break;
1822 #endif
1823 #ifdef I386MAGIC
1824 case I386MAGIC:
1825 case I386PTXMAGIC:
1826 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */
1827 case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */
1828 arch = bfd_arch_i386;
1829 machine = 0;
1830 break;
1831 #endif
1832 #ifdef IA64MAGIC
1833 case IA64MAGIC:
1834 arch = bfd_arch_ia64;
1835 machine = 0;
1836 break;
1837 #endif
1838 #ifdef A29K_MAGIC_BIG
1839 case A29K_MAGIC_BIG:
1840 case A29K_MAGIC_LITTLE:
1841 arch = bfd_arch_a29k;
1842 machine = 0;
1843 break;
1844 #endif
1845 #ifdef ARMMAGIC
1846 case ARMMAGIC:
1847 case ARMPEMAGIC:
1848 case THUMBPEMAGIC:
1849 arch = bfd_arch_arm;
1850 switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK)
1851 {
1852 case F_ARM_2: machine = bfd_mach_arm_2; break;
1853 case F_ARM_2a: machine = bfd_mach_arm_2a; break;
1854 case F_ARM_3: machine = bfd_mach_arm_3; break;
1855 default:
1856 case F_ARM_3M: machine = bfd_mach_arm_3M; break;
1857 case F_ARM_4: machine = bfd_mach_arm_4; break;
1858 case F_ARM_4T: machine = bfd_mach_arm_4T; break;
1859 case F_ARM_5: machine = bfd_mach_arm_5; break;
1860 }
1861 break;
1862 #endif
1863 #ifdef MC68MAGIC
1864 case MC68MAGIC:
1865 case M68MAGIC:
1866 #ifdef MC68KBCSMAGIC
1867 case MC68KBCSMAGIC:
1868 #endif
1869 #ifdef APOLLOM68KMAGIC
1870 case APOLLOM68KMAGIC:
1871 #endif
1872 #ifdef LYNXCOFFMAGIC
1873 case LYNXCOFFMAGIC:
1874 #endif
1875 arch = bfd_arch_m68k;
1876 machine = bfd_mach_m68020;
1877 break;
1878 #endif
1879 #ifdef MC88MAGIC
1880 case MC88MAGIC:
1881 case MC88DMAGIC:
1882 case MC88OMAGIC:
1883 arch = bfd_arch_m88k;
1884 machine = 88100;
1885 break;
1886 #endif
1887 #ifdef Z8KMAGIC
1888 case Z8KMAGIC:
1889 arch = bfd_arch_z8k;
1890 switch (internal_f->f_flags & F_MACHMASK)
1891 {
1892 case F_Z8001:
1893 machine = bfd_mach_z8001;
1894 break;
1895 case F_Z8002:
1896 machine = bfd_mach_z8002;
1897 break;
1898 default:
1899 return false;
1900 }
1901 break;
1902 #endif
1903 #ifdef I860
1904 case I860MAGIC:
1905 arch = bfd_arch_i860;
1906 break;
1907 #endif
1908 #ifdef I960
1909 #ifdef I960ROMAGIC
1910 case I960ROMAGIC:
1911 case I960RWMAGIC:
1912 arch = bfd_arch_i960;
1913 switch (F_I960TYPE & internal_f->f_flags)
1914 {
1915 default:
1916 case F_I960CORE:
1917 machine = bfd_mach_i960_core;
1918 break;
1919 case F_I960KB:
1920 machine = bfd_mach_i960_kb_sb;
1921 break;
1922 case F_I960MC:
1923 machine = bfd_mach_i960_mc;
1924 break;
1925 case F_I960XA:
1926 machine = bfd_mach_i960_xa;
1927 break;
1928 case F_I960CA:
1929 machine = bfd_mach_i960_ca;
1930 break;
1931 case F_I960KA:
1932 machine = bfd_mach_i960_ka_sa;
1933 break;
1934 case F_I960JX:
1935 machine = bfd_mach_i960_jx;
1936 break;
1937 case F_I960HX:
1938 machine = bfd_mach_i960_hx;
1939 break;
1940 }
1941 break;
1942 #endif
1943 #endif
1944
1945 #ifdef RS6000COFF_C
1946 #ifdef XCOFF64
1947 case U803XTOCMAGIC:
1948 #else
1949 case U802ROMAGIC:
1950 case U802WRMAGIC:
1951 case U802TOCMAGIC:
1952 #endif
1953 {
1954 int cputype;
1955
1956 if (xcoff_data (abfd)->cputype != -1)
1957 cputype = xcoff_data (abfd)->cputype & 0xff;
1958 else
1959 {
1960 /* We did not get a value from the a.out header. If the
1961 file has not been stripped, we may be able to get the
1962 architecture information from the first symbol, if it
1963 is a .file symbol. */
1964 if (obj_raw_syment_count (abfd) == 0)
1965 cputype = 0;
1966 else
1967 {
1968 bfd_byte *buf;
1969 struct internal_syment sym;
1970 bfd_size_type amt = bfd_coff_symesz (abfd);
1971
1972 buf = (bfd_byte *) bfd_malloc (amt);
1973 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1974 || bfd_bread (buf, amt, abfd) != amt)
1975 {
1976 free (buf);
1977 return false;
1978 }
1979 bfd_coff_swap_sym_in (abfd, (PTR) buf, (PTR) &sym);
1980 if (sym.n_sclass == C_FILE)
1981 cputype = sym.n_type & 0xff;
1982 else
1983 cputype = 0;
1984 free (buf);
1985 }
1986 }
1987
1988 /* FIXME: We don't handle all cases here. */
1989 switch (cputype)
1990 {
1991 default:
1992 case 0:
1993 arch = bfd_xcoff_architecture (abfd);
1994 machine = bfd_xcoff_machine (abfd);
1995 break;
1996
1997 case 1:
1998 arch = bfd_arch_powerpc;
1999 machine = bfd_mach_ppc_601;
2000 break;
2001 case 2: /* 64 bit PowerPC */
2002 arch = bfd_arch_powerpc;
2003 machine = bfd_mach_ppc_620;
2004 break;
2005 case 3:
2006 arch = bfd_arch_powerpc;
2007 machine = bfd_mach_ppc;
2008 break;
2009 case 4:
2010 arch = bfd_arch_rs6000;
2011 machine = bfd_mach_rs6k;
2012 break;
2013 }
2014 }
2015 break;
2016 #endif
2017
2018 #ifdef WE32KMAGIC
2019 case WE32KMAGIC:
2020 arch = bfd_arch_we32k;
2021 machine = 0;
2022 break;
2023 #endif
2024
2025 #ifdef H8300MAGIC
2026 case H8300MAGIC:
2027 arch = bfd_arch_h8300;
2028 machine = bfd_mach_h8300;
2029 /* !! FIXME this probably isn't the right place for this */
2030 abfd->flags |= BFD_IS_RELAXABLE;
2031 break;
2032 #endif
2033
2034 #ifdef H8300HMAGIC
2035 case H8300HMAGIC:
2036 arch = bfd_arch_h8300;
2037 machine = bfd_mach_h8300h;
2038 /* !! FIXME this probably isn't the right place for this */
2039 abfd->flags |= BFD_IS_RELAXABLE;
2040 break;
2041 #endif
2042
2043 #ifdef H8300SMAGIC
2044 case H8300SMAGIC:
2045 arch = bfd_arch_h8300;
2046 machine = bfd_mach_h8300s;
2047 /* !! FIXME this probably isn't the right place for this */
2048 abfd->flags |= BFD_IS_RELAXABLE;
2049 break;
2050 #endif
2051
2052 #ifdef SH_ARCH_MAGIC_BIG
2053 case SH_ARCH_MAGIC_BIG:
2054 case SH_ARCH_MAGIC_LITTLE:
2055 #ifdef COFF_WITH_PE
2056 case SH_ARCH_MAGIC_WINCE:
2057 #endif
2058 arch = bfd_arch_sh;
2059 machine = 0;
2060 break;
2061 #endif
2062
2063 #ifdef MIPS_ARCH_MAGIC_WINCE
2064 case MIPS_ARCH_MAGIC_WINCE:
2065 arch = bfd_arch_mips;
2066 machine = 0;
2067 break;
2068 #endif
2069
2070 #ifdef H8500MAGIC
2071 case H8500MAGIC:
2072 arch = bfd_arch_h8500;
2073 machine = 0;
2074 break;
2075 #endif
2076
2077 #ifdef SPARCMAGIC
2078 case SPARCMAGIC:
2079 #ifdef LYNXCOFFMAGIC
2080 case LYNXCOFFMAGIC:
2081 #endif
2082 arch = bfd_arch_sparc;
2083 machine = 0;
2084 break;
2085 #endif
2086
2087 #ifdef TIC30MAGIC
2088 case TIC30MAGIC:
2089 arch = bfd_arch_tic30;
2090 break;
2091 #endif
2092
2093 #ifdef TICOFF0MAGIC
2094 #ifdef TICOFF_TARGET_ARCH
2095 /* this TI COFF section should be used by all new TI COFF v0 targets */
2096 case TICOFF0MAGIC:
2097 arch = TICOFF_TARGET_ARCH;
2098 break;
2099 #endif
2100 #endif
2101
2102 #ifdef TICOFF1MAGIC
2103 /* this TI COFF section should be used by all new TI COFF v1/2 targets */
2104 /* TI COFF1 and COFF2 use the target_id field to specify which arch */
2105 case TICOFF1MAGIC:
2106 case TICOFF2MAGIC:
2107 switch (internal_f->f_target_id)
2108 {
2109 #ifdef TI_TARGET_ID
2110 case TI_TARGET_ID:
2111 arch = TICOFF_TARGET_ARCH;
2112 break;
2113 #endif
2114 default:
2115 arch = bfd_arch_obscure;
2116 (*_bfd_error_handler)
2117 (_("Unrecognized TI COFF target id '0x%x'"),
2118 internal_f->f_target_id);
2119 break;
2120 }
2121 break;
2122 #endif
2123
2124 #ifdef TIC80_ARCH_MAGIC
2125 case TIC80_ARCH_MAGIC:
2126 arch = bfd_arch_tic80;
2127 break;
2128 #endif
2129
2130 #ifdef MCOREMAGIC
2131 case MCOREMAGIC:
2132 arch = bfd_arch_mcore;
2133 break;
2134 #endif
2135 default: /* Unreadable input file type */
2136 arch = bfd_arch_obscure;
2137 break;
2138 }
2139
2140 bfd_default_set_arch_mach (abfd, arch, machine);
2141 return true;
2142 }
2143
2144 #ifdef SYMNAME_IN_DEBUG
2145
2146 static boolean symname_in_debug_hook
2147 PARAMS ((bfd *, struct internal_syment *));
2148
2149 static boolean
2150 symname_in_debug_hook (abfd, sym)
2151 bfd * abfd ATTRIBUTE_UNUSED;
2152 struct internal_syment *sym;
2153 {
2154 return SYMNAME_IN_DEBUG (sym) ? true : false;
2155 }
2156
2157 #else
2158
2159 #define symname_in_debug_hook \
2160 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2161
2162 #endif
2163
2164 #ifdef RS6000COFF_C
2165
2166 #ifdef XCOFF64
2167 #define FORCE_SYMNAMES_IN_STRINGS
2168 #endif
2169
2170 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2171
2172 static boolean coff_pointerize_aux_hook
2173 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2174 unsigned int, combined_entry_type *));
2175
2176 /*ARGSUSED*/
2177 static boolean
2178 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2179 bfd *abfd ATTRIBUTE_UNUSED;
2180 combined_entry_type *table_base;
2181 combined_entry_type *symbol;
2182 unsigned int indaux;
2183 combined_entry_type *aux;
2184 {
2185 int class = symbol->u.syment.n_sclass;
2186
2187 if ((class == C_EXT || class == C_HIDEXT)
2188 && indaux + 1 == symbol->u.syment.n_numaux)
2189 {
2190 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2191 {
2192 aux->u.auxent.x_csect.x_scnlen.p =
2193 table_base + aux->u.auxent.x_csect.x_scnlen.l;
2194 aux->fix_scnlen = 1;
2195 }
2196
2197 /* Return true to indicate that the caller should not do any
2198 further work on this auxent. */
2199 return true;
2200 }
2201
2202 /* Return false to indicate that this auxent should be handled by
2203 the caller. */
2204 return false;
2205 }
2206
2207 #else
2208 #ifdef I960
2209
2210 /* We don't want to pointerize bal entries. */
2211
2212 static boolean coff_pointerize_aux_hook
2213 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2214 unsigned int, combined_entry_type *));
2215
2216 /*ARGSUSED*/
2217 static boolean
2218 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2219 bfd *abfd ATTRIBUTE_UNUSED;
2220 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2221 combined_entry_type *symbol;
2222 unsigned int indaux;
2223 combined_entry_type *aux ATTRIBUTE_UNUSED;
2224 {
2225 /* Return true if we don't want to pointerize this aux entry, which
2226 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2227 return (indaux == 1
2228 && (symbol->u.syment.n_sclass == C_LEAFPROC
2229 || symbol->u.syment.n_sclass == C_LEAFSTAT
2230 || symbol->u.syment.n_sclass == C_LEAFEXT));
2231 }
2232
2233 #else /* ! I960 */
2234
2235 #define coff_pointerize_aux_hook 0
2236
2237 #endif /* ! I960 */
2238 #endif /* ! RS6000COFF_C */
2239
2240 /* Print an aux entry. This returns true if it has printed it. */
2241
2242 static boolean coff_print_aux
2243 PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
2244 combined_entry_type *, unsigned int));
2245
2246 static boolean
2247 coff_print_aux (abfd, file, table_base, symbol, aux, indaux)
2248 bfd *abfd ATTRIBUTE_UNUSED;
2249 FILE *file ATTRIBUTE_UNUSED;
2250 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2251 combined_entry_type *symbol ATTRIBUTE_UNUSED;
2252 combined_entry_type *aux ATTRIBUTE_UNUSED;
2253 unsigned int indaux ATTRIBUTE_UNUSED;
2254 {
2255 #ifdef RS6000COFF_C
2256 if ((symbol->u.syment.n_sclass == C_EXT
2257 || symbol->u.syment.n_sclass == C_HIDEXT)
2258 && indaux + 1 == symbol->u.syment.n_numaux)
2259 {
2260 /* This is a csect entry. */
2261 fprintf (file, "AUX ");
2262 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
2263 {
2264 BFD_ASSERT (! aux->fix_scnlen);
2265 #ifdef XCOFF64
2266 fprintf (file, "val %5lld", aux->u.auxent.x_csect.x_scnlen.l);
2267 #else
2268 fprintf (file, "val %5ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2269 #endif
2270 }
2271 else
2272 {
2273 fprintf (file, "indx ");
2274 if (! aux->fix_scnlen)
2275 #ifdef XCOFF64
2276 fprintf (file, "%4lld", aux->u.auxent.x_csect.x_scnlen.l);
2277 #else
2278 fprintf (file, "%4ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2279 #endif
2280 else
2281 fprintf (file, "%4ld",
2282 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
2283 }
2284 fprintf (file,
2285 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2286 aux->u.auxent.x_csect.x_parmhash,
2287 (unsigned int) aux->u.auxent.x_csect.x_snhash,
2288 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
2289 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
2290 (unsigned int) aux->u.auxent.x_csect.x_smclas,
2291 aux->u.auxent.x_csect.x_stab,
2292 (unsigned int) aux->u.auxent.x_csect.x_snstab);
2293 return true;
2294 }
2295 #endif
2296
2297 /* Return false to indicate that no special action was taken. */
2298 return false;
2299 }
2300
2301 /*
2302 SUBSUBSECTION
2303 Writing relocations
2304
2305 To write relocations, the back end steps though the
2306 canonical relocation table and create an
2307 @code{internal_reloc}. The symbol index to use is removed from
2308 the @code{offset} field in the symbol table supplied. The
2309 address comes directly from the sum of the section base
2310 address and the relocation offset; the type is dug directly
2311 from the howto field. Then the @code{internal_reloc} is
2312 swapped into the shape of an @code{external_reloc} and written
2313 out to disk.
2314
2315 */
2316
2317 #ifdef TARG_AUX
2318
2319 static int compare_arelent_ptr PARAMS ((const PTR, const PTR));
2320
2321 /* AUX's ld wants relocations to be sorted */
2322 static int
2323 compare_arelent_ptr (x, y)
2324 const PTR x;
2325 const PTR y;
2326 {
2327 const arelent **a = (const arelent **) x;
2328 const arelent **b = (const arelent **) y;
2329 bfd_size_type aadr = (*a)->address;
2330 bfd_size_type badr = (*b)->address;
2331
2332 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
2333 }
2334
2335 #endif /* TARG_AUX */
2336
2337 static boolean
2338 coff_write_relocs (abfd, first_undef)
2339 bfd * abfd;
2340 int first_undef;
2341 {
2342 asection *s;
2343
2344 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
2345 {
2346 unsigned int i;
2347 struct external_reloc dst;
2348 arelent **p;
2349
2350 #ifndef TARG_AUX
2351 p = s->orelocation;
2352 #else
2353 {
2354 /* sort relocations before we write them out */
2355 bfd_size_type amt;
2356
2357 amt = s->reloc_count;
2358 amt *= sizeof (arelent *);
2359 p = (arelent **) bfd_malloc (amt);
2360 if (p == NULL && s->reloc_count > 0)
2361 return false;
2362 memcpy (p, s->orelocation, (size_t) amt);
2363 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
2364 }
2365 #endif
2366
2367 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
2368 return false;
2369
2370 #ifdef COFF_WITH_PE
2371 if (s->reloc_count > 0xffff)
2372 {
2373 /* encode real count here as first reloc */
2374 struct internal_reloc n;
2375 memset ((PTR) & n, 0, sizeof (n));
2376 /* add one to count *this* reloc (grr) */
2377 n.r_vaddr = s->reloc_count + 1;
2378 coff_swap_reloc_out (abfd, &n, &dst);
2379 if (bfd_bwrite ((PTR) & dst, (bfd_size_type) bfd_coff_relsz (abfd),
2380 abfd) != bfd_coff_relsz (abfd))
2381 return false;
2382 }
2383 #endif
2384
2385 for (i = 0; i < s->reloc_count; i++)
2386 {
2387 struct internal_reloc n;
2388 arelent *q = p[i];
2389 memset ((PTR) & n, 0, sizeof (n));
2390
2391 /* Now we've renumbered the symbols we know where the
2392 undefined symbols live in the table. Check the reloc
2393 entries for symbols who's output bfd isn't the right one.
2394 This is because the symbol was undefined (which means
2395 that all the pointers are never made to point to the same
2396 place). This is a bad thing,'cause the symbols attached
2397 to the output bfd are indexed, so that the relocation
2398 entries know which symbol index they point to. So we
2399 have to look up the output symbol here. */
2400
2401 if (q->sym_ptr_ptr[0]->the_bfd != abfd)
2402 {
2403 int j;
2404 const char *sname = q->sym_ptr_ptr[0]->name;
2405 asymbol **outsyms = abfd->outsymbols;
2406 for (j = first_undef; outsyms[j]; j++)
2407 {
2408 const char *intable = outsyms[j]->name;
2409 if (strcmp (intable, sname) == 0) {
2410 /* got a hit, so repoint the reloc */
2411 q->sym_ptr_ptr = outsyms + j;
2412 break;
2413 }
2414 }
2415 }
2416
2417 n.r_vaddr = q->address + s->vma;
2418
2419 #ifdef R_IHCONST
2420 /* The 29k const/consth reloc pair is a real kludge. The consth
2421 part doesn't have a symbol; it has an offset. So rebuilt
2422 that here. */
2423 if (q->howto->type == R_IHCONST)
2424 n.r_symndx = q->addend;
2425 else
2426 #endif
2427 if (q->sym_ptr_ptr)
2428 {
2429 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2430 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q,s))
2431 #else
2432 if (q->sym_ptr_ptr == bfd_abs_section_ptr->symbol_ptr_ptr)
2433 #endif
2434 /* This is a relocation relative to the absolute symbol. */
2435 n.r_symndx = -1;
2436 else
2437 {
2438 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
2439 /* Take notice if the symbol reloc points to a symbol
2440 we don't have in our symbol table. What should we
2441 do for this?? */
2442 if (n.r_symndx > obj_conv_table_size (abfd))
2443 abort ();
2444 }
2445 }
2446
2447 #ifdef SWAP_OUT_RELOC_OFFSET
2448 n.r_offset = q->addend;
2449 #endif
2450
2451 #ifdef SELECT_RELOC
2452 /* Work out reloc type from what is required */
2453 SELECT_RELOC (n, q->howto);
2454 #else
2455 n.r_type = q->howto->type;
2456 #endif
2457 coff_swap_reloc_out (abfd, &n, &dst);
2458 if (bfd_bwrite ((PTR) & dst, (bfd_size_type) bfd_coff_relsz (abfd),
2459 abfd) != bfd_coff_relsz (abfd))
2460 return false;
2461 }
2462
2463 #ifdef TARG_AUX
2464 if (p != NULL)
2465 free (p);
2466 #endif
2467 }
2468
2469 return true;
2470 }
2471
2472 /* Set flags and magic number of a coff file from architecture and machine
2473 type. Result is true if we can represent the arch&type, false if not. */
2474
2475 static boolean
2476 coff_set_flags (abfd, magicp, flagsp)
2477 bfd * abfd;
2478 unsigned int *magicp ATTRIBUTE_UNUSED;
2479 unsigned short *flagsp ATTRIBUTE_UNUSED;
2480 {
2481 switch (bfd_get_arch (abfd))
2482 {
2483 #ifdef Z8KMAGIC
2484 case bfd_arch_z8k:
2485 *magicp = Z8KMAGIC;
2486 switch (bfd_get_mach (abfd))
2487 {
2488 case bfd_mach_z8001:
2489 *flagsp = F_Z8001;
2490 break;
2491 case bfd_mach_z8002:
2492 *flagsp = F_Z8002;
2493 break;
2494 default:
2495 return false;
2496 }
2497 return true;
2498 #endif
2499 #ifdef I960ROMAGIC
2500
2501 case bfd_arch_i960:
2502
2503 {
2504 unsigned flags;
2505 *magicp = I960ROMAGIC;
2506 /*
2507 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2508 I960RWMAGIC); FIXME???
2509 */
2510 switch (bfd_get_mach (abfd))
2511 {
2512 case bfd_mach_i960_core:
2513 flags = F_I960CORE;
2514 break;
2515 case bfd_mach_i960_kb_sb:
2516 flags = F_I960KB;
2517 break;
2518 case bfd_mach_i960_mc:
2519 flags = F_I960MC;
2520 break;
2521 case bfd_mach_i960_xa:
2522 flags = F_I960XA;
2523 break;
2524 case bfd_mach_i960_ca:
2525 flags = F_I960CA;
2526 break;
2527 case bfd_mach_i960_ka_sa:
2528 flags = F_I960KA;
2529 break;
2530 case bfd_mach_i960_jx:
2531 flags = F_I960JX;
2532 break;
2533 case bfd_mach_i960_hx:
2534 flags = F_I960HX;
2535 break;
2536 default:
2537 return false;
2538 }
2539 *flagsp = flags;
2540 return true;
2541 }
2542 break;
2543 #endif
2544
2545 #ifdef TIC30MAGIC
2546 case bfd_arch_tic30:
2547 *magicp = TIC30MAGIC;
2548 return true;
2549 #endif
2550
2551 #ifdef TICOFF_DEFAULT_MAGIC
2552 case TICOFF_TARGET_ARCH:
2553 /* if there's no indication of which version we want, use the default */
2554 if (!abfd->xvec )
2555 *magicp = TICOFF_DEFAULT_MAGIC;
2556 else
2557 {
2558 /* we may want to output in a different COFF version */
2559 switch (abfd->xvec->name[4])
2560 {
2561 case '0':
2562 *magicp = TICOFF0MAGIC;
2563 break;
2564 case '1':
2565 *magicp = TICOFF1MAGIC;
2566 break;
2567 case '2':
2568 *magicp = TICOFF2MAGIC;
2569 break;
2570 default:
2571 return false;
2572 }
2573 }
2574 return true;
2575 #endif
2576
2577 #ifdef TIC80_ARCH_MAGIC
2578 case bfd_arch_tic80:
2579 *magicp = TIC80_ARCH_MAGIC;
2580 return true;
2581 #endif
2582 #ifdef ARMMAGIC
2583 case bfd_arch_arm:
2584 #ifdef ARM_WINCE
2585 * magicp = ARMPEMAGIC;
2586 #else
2587 * magicp = ARMMAGIC;
2588 #endif
2589 * flagsp = 0;
2590 if (APCS_SET (abfd))
2591 {
2592 if (APCS_26_FLAG (abfd))
2593 * flagsp |= F_APCS26;
2594
2595 if (APCS_FLOAT_FLAG (abfd))
2596 * flagsp |= F_APCS_FLOAT;
2597
2598 if (PIC_FLAG (abfd))
2599 * flagsp |= F_PIC;
2600 }
2601 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2602 * flagsp |= F_INTERWORK;
2603 switch (bfd_get_mach (abfd))
2604 {
2605 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2606 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2607 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2608 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2609 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2610 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2611 case bfd_mach_arm_5: * flagsp |= F_ARM_5; break;
2612 /* FIXME: we do not have F_ARM vaues greater than F_ARM_5. */
2613 case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break;
2614 case bfd_mach_arm_5TE: * flagsp |= F_ARM_5; break;
2615 case bfd_mach_arm_XScale: * flagsp |= F_ARM_5; break;
2616 }
2617 return true;
2618 #endif
2619 #ifdef PPCMAGIC
2620 case bfd_arch_powerpc:
2621 *magicp = PPCMAGIC;
2622 return true;
2623 break;
2624 #endif
2625 #ifdef I386MAGIC
2626 case bfd_arch_i386:
2627 *magicp = I386MAGIC;
2628 #ifdef LYNXOS
2629 /* Just overwrite the usual value if we're doing Lynx. */
2630 *magicp = LYNXCOFFMAGIC;
2631 #endif
2632 return true;
2633 break;
2634 #endif
2635 #ifdef I860MAGIC
2636 case bfd_arch_i860:
2637 *magicp = I860MAGIC;
2638 return true;
2639 break;
2640 #endif
2641 #ifdef IA64MAGIC
2642 case bfd_arch_ia64:
2643 *magicp = IA64MAGIC;
2644 return true;
2645 break;
2646 #endif
2647 #ifdef MC68MAGIC
2648 case bfd_arch_m68k:
2649 #ifdef APOLLOM68KMAGIC
2650 *magicp = APOLLO_COFF_VERSION_NUMBER;
2651 #else
2652 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2653 #ifdef NAMES_HAVE_UNDERSCORE
2654 *magicp = MC68KBCSMAGIC;
2655 #else
2656 *magicp = MC68MAGIC;
2657 #endif
2658 #endif
2659 #ifdef LYNXOS
2660 /* Just overwrite the usual value if we're doing Lynx. */
2661 *magicp = LYNXCOFFMAGIC;
2662 #endif
2663 return true;
2664 break;
2665 #endif
2666
2667 #ifdef MC88MAGIC
2668 case bfd_arch_m88k:
2669 *magicp = MC88OMAGIC;
2670 return true;
2671 break;
2672 #endif
2673 #ifdef H8300MAGIC
2674 case bfd_arch_h8300:
2675 switch (bfd_get_mach (abfd))
2676 {
2677 case bfd_mach_h8300:
2678 *magicp = H8300MAGIC;
2679 return true;
2680 case bfd_mach_h8300h:
2681 *magicp = H8300HMAGIC;
2682 return true;
2683 case bfd_mach_h8300s:
2684 *magicp = H8300SMAGIC;
2685 return true;
2686 }
2687 break;
2688 #endif
2689
2690 #ifdef SH_ARCH_MAGIC_BIG
2691 case bfd_arch_sh:
2692 #ifdef COFF_IMAGE_WITH_PE
2693 *magicp = SH_ARCH_MAGIC_WINCE;
2694 #else
2695 if (bfd_big_endian (abfd))
2696 *magicp = SH_ARCH_MAGIC_BIG;
2697 else
2698 *magicp = SH_ARCH_MAGIC_LITTLE;
2699 #endif
2700 return true;
2701 break;
2702 #endif
2703
2704 #ifdef MIPS_ARCH_MAGIC_WINCE
2705 case bfd_arch_mips:
2706 *magicp = MIPS_ARCH_MAGIC_WINCE;
2707 return true;
2708 break;
2709 #endif
2710
2711 #ifdef SPARCMAGIC
2712 case bfd_arch_sparc:
2713 *magicp = SPARCMAGIC;
2714 #ifdef LYNXOS
2715 /* Just overwrite the usual value if we're doing Lynx. */
2716 *magicp = LYNXCOFFMAGIC;
2717 #endif
2718 return true;
2719 break;
2720 #endif
2721
2722 #ifdef H8500MAGIC
2723 case bfd_arch_h8500:
2724 *magicp = H8500MAGIC;
2725 return true;
2726 break;
2727 #endif
2728 #ifdef A29K_MAGIC_BIG
2729 case bfd_arch_a29k:
2730 if (bfd_big_endian (abfd))
2731 *magicp = A29K_MAGIC_BIG;
2732 else
2733 *magicp = A29K_MAGIC_LITTLE;
2734 return true;
2735 break;
2736 #endif
2737
2738 #ifdef WE32KMAGIC
2739 case bfd_arch_we32k:
2740 *magicp = WE32KMAGIC;
2741 return true;
2742 break;
2743 #endif
2744
2745 #ifdef RS6000COFF_C
2746 case bfd_arch_rs6000:
2747 #ifndef PPCMAGIC
2748 case bfd_arch_powerpc:
2749 #endif
2750 #ifdef XCOFF64
2751 if (bfd_get_mach (abfd) == bfd_mach_ppc_620
2752 && !strncmp (abfd->xvec->name,"aix", 3))
2753 *magicp = U803XTOCMAGIC;
2754 else
2755 #else
2756 *magicp = U802TOCMAGIC;
2757 #endif
2758 return true;
2759 break;
2760 #endif
2761
2762 #ifdef MCOREMAGIC
2763 case bfd_arch_mcore:
2764 * magicp = MCOREMAGIC;
2765 return true;
2766 #endif
2767
2768 #ifdef W65MAGIC
2769 case bfd_arch_w65:
2770 *magicp = W65MAGIC;
2771 return true;
2772 #endif
2773
2774 default: /* Unknown architecture. */
2775 /* Fall through to "return false" below, to avoid
2776 "statement never reached" errors on the one below. */
2777 break;
2778 }
2779
2780 return false;
2781 }
2782
2783 static boolean
2784 coff_set_arch_mach (abfd, arch, machine)
2785 bfd * abfd;
2786 enum bfd_architecture arch;
2787 unsigned long machine;
2788 {
2789 unsigned dummy1;
2790 unsigned short dummy2;
2791
2792 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2793 return false;
2794
2795 if (arch != bfd_arch_unknown &&
2796 coff_set_flags (abfd, &dummy1, &dummy2) != true)
2797 return false; /* We can't represent this type */
2798
2799 return true; /* We're easy ... */
2800 }
2801
2802 #ifdef COFF_IMAGE_WITH_PE
2803
2804 /* This is used to sort sections by VMA, as required by PE image
2805 files. */
2806
2807 static int sort_by_secaddr PARAMS ((const PTR, const PTR));
2808
2809 static int
2810 sort_by_secaddr (arg1, arg2)
2811 const PTR arg1;
2812 const PTR arg2;
2813 {
2814 const asection *a = *(const asection **) arg1;
2815 const asection *b = *(const asection **) arg2;
2816
2817 if (a->vma < b->vma)
2818 return -1;
2819 else if (a->vma > b->vma)
2820 return 1;
2821 else
2822 return 0;
2823 }
2824
2825 #endif /* COFF_IMAGE_WITH_PE */
2826
2827 /* Calculate the file position for each section. */
2828
2829 #ifndef I960
2830 #define ALIGN_SECTIONS_IN_FILE
2831 #endif
2832 #if defined(TIC80COFF) || defined(TICOFF)
2833 #undef ALIGN_SECTIONS_IN_FILE
2834 #endif
2835
2836 static boolean
2837 coff_compute_section_file_positions (abfd)
2838 bfd * abfd;
2839 {
2840 asection *current;
2841 asection *previous = (asection *) NULL;
2842 file_ptr sofar = bfd_coff_filhsz (abfd);
2843 boolean align_adjust;
2844 #ifdef ALIGN_SECTIONS_IN_FILE
2845 file_ptr old_sofar;
2846 #endif
2847
2848 #ifdef RS6000COFF_C
2849 /* On XCOFF, if we have symbols, set up the .debug section. */
2850 if (bfd_get_symcount (abfd) > 0)
2851 {
2852 bfd_size_type sz;
2853 bfd_size_type i, symcount;
2854 asymbol **symp;
2855
2856 sz = 0;
2857 symcount = bfd_get_symcount (abfd);
2858 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
2859 {
2860 coff_symbol_type *cf;
2861
2862 cf = coff_symbol_from (abfd, *symp);
2863 if (cf != NULL
2864 && cf->native != NULL
2865 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
2866 {
2867 size_t len;
2868
2869 len = strlen (bfd_asymbol_name (*symp));
2870 if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd))
2871 sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd);
2872 }
2873 }
2874 if (sz > 0)
2875 {
2876 asection *dsec;
2877
2878 dsec = bfd_make_section_old_way (abfd, ".debug");
2879 if (dsec == NULL)
2880 abort ();
2881 dsec->_raw_size = sz;
2882 dsec->flags |= SEC_HAS_CONTENTS;
2883 }
2884 }
2885 #endif
2886
2887 #ifdef COFF_IMAGE_WITH_PE
2888 int page_size;
2889 if (coff_data (abfd)->link_info)
2890 {
2891 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
2892 }
2893 else
2894 page_size = PE_DEF_FILE_ALIGNMENT;
2895 #else
2896 #ifdef COFF_PAGE_SIZE
2897 int page_size = COFF_PAGE_SIZE;
2898 #endif
2899 #endif
2900
2901 if (bfd_get_start_address (abfd))
2902 {
2903 /* A start address may have been added to the original file. In this
2904 case it will need an optional header to record it. */
2905 abfd->flags |= EXEC_P;
2906 }
2907
2908 if (abfd->flags & EXEC_P)
2909 sofar += bfd_coff_aoutsz (abfd);
2910 #ifdef RS6000COFF_C
2911 else if (xcoff_data (abfd)->full_aouthdr)
2912 sofar += bfd_coff_aoutsz (abfd);
2913 else
2914 sofar += SMALL_AOUTSZ;
2915 #endif
2916
2917 sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
2918
2919 #ifdef RS6000COFF_C
2920 /* XCOFF handles overflows in the reloc and line number count fields
2921 by allocating a new section header to hold the correct counts. */
2922 for (current = abfd->sections; current != NULL; current = current->next)
2923 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2924 sofar += bfd_coff_scnhsz (abfd);
2925 #endif
2926
2927 #ifdef COFF_IMAGE_WITH_PE
2928 {
2929 /* PE requires the sections to be in memory order when listed in
2930 the section headers. It also does not like empty loadable
2931 sections. The sections apparently do not have to be in the
2932 right order in the image file itself, but we do need to get the
2933 target_index values right. */
2934
2935 unsigned int count;
2936 asection **section_list;
2937 unsigned int i;
2938 int target_index;
2939 bfd_size_type amt;
2940
2941 count = 0;
2942 for (current = abfd->sections; current != NULL; current = current->next)
2943 ++count;
2944
2945 /* We allocate an extra cell to simplify the final loop. */
2946 amt = sizeof (struct asection *) * (count + 1);
2947 section_list = bfd_malloc (amt);
2948 if (section_list == NULL)
2949 return false;
2950
2951 i = 0;
2952 for (current = abfd->sections; current != NULL; current = current->next)
2953 {
2954 section_list[i] = current;
2955 ++i;
2956 }
2957 section_list[i] = NULL;
2958
2959 qsort (section_list, count, sizeof (asection *), sort_by_secaddr);
2960
2961 /* Rethread the linked list into sorted order; at the same time,
2962 assign target_index values. */
2963 target_index = 1;
2964 abfd->sections = section_list[0];
2965 for (i = 0; i < count; i++)
2966 {
2967 current = section_list[i];
2968 current->next = section_list[i + 1];
2969
2970 /* Later, if the section has zero size, we'll be throwing it
2971 away, so we don't want to number it now. Note that having
2972 a zero size and having real contents are different
2973 concepts: .bss has no contents, but (usually) non-zero
2974 size. */
2975 if (current->_raw_size == 0)
2976 {
2977 /* Discard. However, it still might have (valid) symbols
2978 in it, so arbitrarily set it to section 1 (indexing is
2979 1-based here; usually .text). __end__ and other
2980 contents of .endsection really have this happen.
2981 FIXME: This seems somewhat dubious. */
2982 current->target_index = 1;
2983 }
2984 else
2985 current->target_index = target_index++;
2986 }
2987
2988 free (section_list);
2989 }
2990 #else /* ! COFF_IMAGE_WITH_PE */
2991 {
2992 /* Set the target_index field. */
2993 int target_index;
2994
2995 target_index = 1;
2996 for (current = abfd->sections; current != NULL; current = current->next)
2997 current->target_index = target_index++;
2998 }
2999 #endif /* ! COFF_IMAGE_WITH_PE */
3000
3001 align_adjust = false;
3002 for (current = abfd->sections;
3003 current != (asection *) NULL;
3004 current = current->next)
3005 {
3006 #ifdef COFF_IMAGE_WITH_PE
3007 /* With PE we have to pad each section to be a multiple of its
3008 page size too, and remember both sizes. */
3009 if (coff_section_data (abfd, current) == NULL)
3010 {
3011 bfd_size_type amt = sizeof (struct coff_section_tdata);
3012 current->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
3013 if (current->used_by_bfd == NULL)
3014 return false;
3015 }
3016 if (pei_section_data (abfd, current) == NULL)
3017 {
3018 bfd_size_type amt = sizeof (struct pei_section_tdata);
3019 coff_section_data (abfd, current)->tdata
3020 = (PTR) bfd_zalloc (abfd, amt);
3021 if (coff_section_data (abfd, current)->tdata == NULL)
3022 return false;
3023 }
3024 if (pei_section_data (abfd, current)->virt_size == 0)
3025 pei_section_data (abfd, current)->virt_size = current->_raw_size;
3026 #endif
3027
3028 /* Only deal with sections which have contents. */
3029 if (!(current->flags & SEC_HAS_CONTENTS))
3030 continue;
3031
3032 #ifdef COFF_IMAGE_WITH_PE
3033 /* Make sure we skip empty sections in a PE image. */
3034 if (current->_raw_size == 0)
3035 continue;
3036 #endif
3037
3038 /* Align the sections in the file to the same boundary on
3039 which they are aligned in virtual memory. I960 doesn't
3040 do this (FIXME) so we can stay in sync with Intel. 960
3041 doesn't yet page from files... */
3042 #ifdef ALIGN_SECTIONS_IN_FILE
3043 if ((abfd->flags & EXEC_P) != 0)
3044 {
3045 /* make sure this section is aligned on the right boundary - by
3046 padding the previous section up if necessary */
3047
3048 old_sofar = sofar;
3049 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3050 if (previous != (asection *) NULL)
3051 {
3052 previous->_raw_size += sofar - old_sofar;
3053 }
3054 }
3055
3056 #endif
3057
3058 /* In demand paged files the low order bits of the file offset
3059 must match the low order bits of the virtual address. */
3060 #ifdef COFF_PAGE_SIZE
3061 if ((abfd->flags & D_PAGED) != 0
3062 && (current->flags & SEC_ALLOC) != 0)
3063 sofar += (current->vma - sofar) % page_size;
3064 #endif
3065 current->filepos = sofar;
3066
3067 #ifdef COFF_IMAGE_WITH_PE
3068 /* Set the padded size. */
3069 current->_raw_size = (current->_raw_size + page_size -1) & -page_size;
3070 #endif
3071
3072 sofar += current->_raw_size;
3073
3074 #ifdef ALIGN_SECTIONS_IN_FILE
3075 /* make sure that this section is of the right size too */
3076 if ((abfd->flags & EXEC_P) == 0)
3077 {
3078 bfd_size_type old_size;
3079
3080 old_size = current->_raw_size;
3081 current->_raw_size = BFD_ALIGN (current->_raw_size,
3082 1 << current->alignment_power);
3083 align_adjust = current->_raw_size != old_size;
3084 sofar += current->_raw_size - old_size;
3085 }
3086 else
3087 {
3088 old_sofar = sofar;
3089 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3090 align_adjust = sofar != old_sofar;
3091 current->_raw_size += sofar - old_sofar;
3092 }
3093 #endif
3094
3095 #ifdef COFF_IMAGE_WITH_PE
3096 /* For PE we need to make sure we pad out to the aligned
3097 _raw_size, in case the caller only writes out data to the
3098 unaligned _raw_size. */
3099 if (pei_section_data (abfd, current)->virt_size < current->_raw_size)
3100 align_adjust = true;
3101 #endif
3102
3103 #ifdef _LIB
3104 /* Force .lib sections to start at zero. The vma is then
3105 incremented in coff_set_section_contents. This is right for
3106 SVR3.2. */
3107 if (strcmp (current->name, _LIB) == 0)
3108 bfd_set_section_vma (abfd, current, 0);
3109 #endif
3110
3111 previous = current;
3112 }
3113
3114 /* It is now safe to write to the output file. If we needed an
3115 alignment adjustment for the last section, then make sure that
3116 there is a byte at offset sofar. If there are no symbols and no
3117 relocs, then nothing follows the last section. If we don't force
3118 the last byte out, then the file may appear to be truncated. */
3119 if (align_adjust)
3120 {
3121 bfd_byte b;
3122
3123 b = 0;
3124 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
3125 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
3126 return false;
3127 }
3128
3129 /* Make sure the relocations are aligned. We don't need to make
3130 sure that this byte exists, because it will only matter if there
3131 really are relocs. */
3132 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
3133
3134 obj_relocbase (abfd) = sofar;
3135 abfd->output_has_begun = true;
3136
3137 return true;
3138 }
3139
3140 #if 0
3141
3142 /* This can never work, because it is called too late--after the
3143 section positions have been set. I can't figure out what it is
3144 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3145
3146 /* If .file, .text, .data, .bss symbols are missing, add them. */
3147 /* @@ Should we only be adding missing symbols, or overriding the aux
3148 values for existing section symbols? */
3149 static boolean
3150 coff_add_missing_symbols (abfd)
3151 bfd *abfd;
3152 {
3153 unsigned int nsyms = bfd_get_symcount (abfd);
3154 asymbol **sympp = abfd->outsymbols;
3155 asymbol **sympp2;
3156 unsigned int i;
3157 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
3158 bfd_size_type amt;
3159
3160 for (i = 0; i < nsyms; i++)
3161 {
3162 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
3163 const char *name;
3164 if (csym)
3165 {
3166 /* only do this if there is a coff representation of the input
3167 symbol */
3168 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
3169 {
3170 need_file = 0;
3171 continue;
3172 }
3173 name = csym->symbol.name;
3174 if (!name)
3175 continue;
3176 if (!strcmp (name, _TEXT))
3177 need_text = 0;
3178 #ifdef APOLLO_M68
3179 else if (!strcmp (name, ".wtext"))
3180 need_text = 0;
3181 #endif
3182 else if (!strcmp (name, _DATA))
3183 need_data = 0;
3184 else if (!strcmp (name, _BSS))
3185 need_bss = 0;
3186 }
3187 }
3188 /* Now i == bfd_get_symcount (abfd). */
3189 /* @@ For now, don't deal with .file symbol. */
3190 need_file = 0;
3191
3192 if (!need_text && !need_data && !need_bss && !need_file)
3193 return true;
3194 nsyms += need_text + need_data + need_bss + need_file;
3195 amt = nsyms;
3196 amt *= sizeof (asymbol *);
3197 sympp2 = (asymbol **) bfd_alloc (abfd, amt);
3198 if (!sympp2)
3199 return false;
3200 memcpy (sympp2, sympp, i * sizeof (asymbol *));
3201 if (need_file)
3202 {
3203 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3204 abort ();
3205 }
3206 if (need_text)
3207 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
3208 if (need_data)
3209 sympp2[i++] = coff_section_symbol (abfd, _DATA);
3210 if (need_bss)
3211 sympp2[i++] = coff_section_symbol (abfd, _BSS);
3212 BFD_ASSERT (i == nsyms);
3213 bfd_set_symtab (abfd, sympp2, nsyms);
3214 return true;
3215 }
3216
3217 #endif /* 0 */
3218
3219 /* SUPPRESS 558 */
3220 /* SUPPRESS 529 */
3221 static boolean
3222 coff_write_object_contents (abfd)
3223 bfd * abfd;
3224 {
3225 asection *current;
3226 boolean hasrelocs = false;
3227 boolean haslinno = false;
3228 boolean hasdebug = false;
3229 file_ptr scn_base;
3230 file_ptr reloc_base;
3231 file_ptr lineno_base;
3232 file_ptr sym_base;
3233 unsigned long reloc_size = 0, reloc_count = 0;
3234 unsigned long lnno_size = 0;
3235 boolean long_section_names;
3236 asection *text_sec = NULL;
3237 asection *data_sec = NULL;
3238 asection *bss_sec = NULL;
3239 struct internal_filehdr internal_f;
3240 struct internal_aouthdr internal_a;
3241 #ifdef COFF_LONG_SECTION_NAMES
3242 size_t string_size = STRING_SIZE_SIZE;
3243 #endif
3244
3245 bfd_set_error (bfd_error_system_call);
3246
3247 /* Make a pass through the symbol table to count line number entries and
3248 put them into the correct asections */
3249
3250 lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd);
3251
3252 if (abfd->output_has_begun == false)
3253 {
3254 if (! coff_compute_section_file_positions (abfd))
3255 return false;
3256 }
3257
3258 reloc_base = obj_relocbase (abfd);
3259
3260 /* Work out the size of the reloc and linno areas */
3261
3262 for (current = abfd->sections; current != NULL; current =
3263 current->next)
3264 {
3265 #ifdef COFF_WITH_PE
3266 /* we store the actual reloc count in the first reloc's addr */
3267 if (current->reloc_count > 0xffff)
3268 reloc_count ++;
3269 #endif
3270 reloc_count += current->reloc_count;
3271 }
3272
3273 reloc_size = reloc_count * bfd_coff_relsz (abfd);
3274
3275 lineno_base = reloc_base + reloc_size;
3276 sym_base = lineno_base + lnno_size;
3277
3278 /* Indicate in each section->line_filepos its actual file address */
3279 for (current = abfd->sections; current != NULL; current =
3280 current->next)
3281 {
3282 if (current->lineno_count)
3283 {
3284 current->line_filepos = lineno_base;
3285 current->moving_line_filepos = lineno_base;
3286 lineno_base += current->lineno_count * bfd_coff_linesz (abfd);
3287 }
3288 else
3289 {
3290 current->line_filepos = 0;
3291 }
3292 if (current->reloc_count)
3293 {
3294 current->rel_filepos = reloc_base;
3295 reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
3296 #ifdef COFF_WITH_PE
3297 /* extra reloc to hold real count */
3298 if (current->reloc_count > 0xffff)
3299 reloc_base += bfd_coff_relsz (abfd);
3300 #endif
3301 }
3302 else
3303 {
3304 current->rel_filepos = 0;
3305 }
3306 }
3307
3308 /* Write section headers to the file. */
3309 internal_f.f_nscns = 0;
3310
3311 if ((abfd->flags & EXEC_P) != 0)
3312 scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
3313 else
3314 {
3315 scn_base = bfd_coff_filhsz (abfd);
3316 #ifdef RS6000COFF_C
3317 #ifndef XCOFF64
3318 if (xcoff_data (abfd)->full_aouthdr)
3319 scn_base += bfd_coff_aoutsz (abfd);
3320 else
3321 scn_base += SMALL_AOUTSZ;
3322 #endif
3323 #endif
3324 }
3325
3326 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
3327 return false;
3328
3329 long_section_names = false;
3330 for (current = abfd->sections;
3331 current != NULL;
3332 current = current->next)
3333 {
3334 struct internal_scnhdr section;
3335 boolean is_reloc_section = false;
3336
3337 #ifdef COFF_IMAGE_WITH_PE
3338 if (strcmp (current->name, ".reloc") == 0)
3339 {
3340 is_reloc_section = true;
3341 hasrelocs = true;
3342 pe_data (abfd)->has_reloc_section = 1;
3343 }
3344 #endif
3345
3346 internal_f.f_nscns++;
3347
3348 strncpy (section.s_name, current->name, SCNNMLEN);
3349
3350 #ifdef COFF_LONG_SECTION_NAMES
3351 /* Handle long section names as in PE. This must be compatible
3352 with the code in coff_write_symbols and _bfd_coff_final_link. */
3353 {
3354 size_t len;
3355
3356 len = strlen (current->name);
3357 if (len > SCNNMLEN)
3358 {
3359 memset (section.s_name, 0, SCNNMLEN);
3360 sprintf (section.s_name, "/%lu", (unsigned long) string_size);
3361 string_size += len + 1;
3362 long_section_names = true;
3363 }
3364 }
3365 #endif
3366
3367 #ifdef _LIB
3368 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3369 Ian Taylor <ian@cygnus.com>. */
3370 if (strcmp (current->name, _LIB) == 0)
3371 section.s_vaddr = 0;
3372 else
3373 #endif
3374 section.s_vaddr = current->vma;
3375 section.s_paddr = current->lma;
3376 section.s_size = current->_raw_size;
3377 #ifdef coff_get_section_load_page
3378 section.s_page = coff_get_section_load_page (current);
3379 #endif
3380
3381 #ifdef COFF_WITH_PE
3382 section.s_paddr = 0;
3383 #endif
3384 #ifdef COFF_IMAGE_WITH_PE
3385 /* Reminder: s_paddr holds the virtual size of the section. */
3386 if (coff_section_data (abfd, current) != NULL
3387 && pei_section_data (abfd, current) != NULL)
3388 section.s_paddr = pei_section_data (abfd, current)->virt_size;
3389 else
3390 section.s_paddr = 0;
3391 #endif
3392
3393 /*
3394 If this section has no size or is unloadable then the scnptr
3395 will be 0 too
3396 */
3397 if (current->_raw_size == 0 ||
3398 (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
3399 {
3400 section.s_scnptr = 0;
3401 }
3402 else
3403 {
3404 section.s_scnptr = current->filepos;
3405 }
3406 section.s_relptr = current->rel_filepos;
3407 section.s_lnnoptr = current->line_filepos;
3408 section.s_nreloc = current->reloc_count;
3409 section.s_nlnno = current->lineno_count;
3410 #ifndef COFF_IMAGE_WITH_PE
3411 /* In PEI, relocs come in the .reloc section. */
3412 if (current->reloc_count != 0)
3413 hasrelocs = true;
3414 #endif
3415 if (current->lineno_count != 0)
3416 haslinno = true;
3417 if ((current->flags & SEC_DEBUGGING) != 0
3418 && ! is_reloc_section)
3419 hasdebug = true;
3420
3421 #ifdef RS6000COFF_C
3422 #ifndef XCOFF64
3423 /* Indicate the use of an XCOFF overflow section header. */
3424 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3425 {
3426 section.s_nreloc = 0xffff;
3427 section.s_nlnno = 0xffff;
3428 }
3429 #endif
3430 #endif
3431
3432 section.s_flags = sec_to_styp_flags (current->name, current->flags);
3433
3434 if (!strcmp (current->name, _TEXT))
3435 {
3436 text_sec = current;
3437 }
3438 else if (!strcmp (current->name, _DATA))
3439 {
3440 data_sec = current;
3441 }
3442 else if (!strcmp (current->name, _BSS))
3443 {
3444 bss_sec = current;
3445 }
3446
3447 #ifdef I960
3448 section.s_align = (current->alignment_power
3449 ? 1 << current->alignment_power
3450 : 0);
3451 #endif
3452 #ifdef TIC80COFF
3453 /* TI COFF puts the alignment power in bits 8-11 of the flags */
3454 section.s_flags |= (current->alignment_power & 0xF) << 8;
3455 #endif
3456 #ifdef COFF_ENCODE_ALIGNMENT
3457 COFF_ENCODE_ALIGNMENT(section, current->alignment_power);
3458 #endif
3459
3460 #ifdef COFF_IMAGE_WITH_PE
3461 /* Suppress output of the sections if they are null. ld
3462 includes the bss and data sections even if there is no size
3463 assigned to them. NT loader doesn't like it if these section
3464 headers are included if the sections themselves are not
3465 needed. See also coff_compute_section_file_positions. */
3466 if (section.s_size == 0)
3467 internal_f.f_nscns--;
3468 else
3469 #endif
3470 {
3471 SCNHDR buff;
3472 bfd_size_type amt = bfd_coff_scnhsz (abfd);
3473
3474 if (coff_swap_scnhdr_out (abfd, &section, &buff) == 0
3475 || bfd_bwrite ((PTR) &buff, amt, abfd) != amt)
3476 return false;
3477 }
3478
3479 #ifdef COFF_WITH_PE
3480 /* PE stores COMDAT section information in the symbol table. If
3481 this section is supposed to have some COMDAT info, track down
3482 the symbol in the symbol table and modify it. */
3483 if ((current->flags & SEC_LINK_ONCE) != 0)
3484 {
3485 unsigned int i, count;
3486 asymbol **psym;
3487 coff_symbol_type *csym = NULL;
3488 asymbol **psymsec;
3489
3490 psymsec = NULL;
3491 count = bfd_get_symcount (abfd);
3492 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
3493 {
3494 if ((*psym)->section != current)
3495 continue;
3496
3497 /* Remember the location of the first symbol in this
3498 section. */
3499 if (psymsec == NULL)
3500 psymsec = psym;
3501
3502 /* See if this is the section symbol. */
3503 if (strcmp ((*psym)->name, current->name) == 0)
3504 {
3505 csym = coff_symbol_from (abfd, *psym);
3506 if (csym == NULL
3507 || csym->native == NULL
3508 || csym->native->u.syment.n_numaux < 1
3509 || csym->native->u.syment.n_sclass != C_STAT
3510 || csym->native->u.syment.n_type != T_NULL)
3511 continue;
3512
3513 /* Here *PSYM is the section symbol for CURRENT. */
3514
3515 break;
3516 }
3517 }
3518
3519 /* Did we find it?
3520 Note that we might not if we're converting the file from
3521 some other object file format. */
3522 if (i < count)
3523 {
3524 combined_entry_type *aux;
3525
3526 /* We don't touch the x_checksum field. The
3527 x_associated field is not currently supported. */
3528
3529 aux = csym->native + 1;
3530 switch (current->flags & SEC_LINK_DUPLICATES)
3531 {
3532 case SEC_LINK_DUPLICATES_DISCARD:
3533 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
3534 break;
3535
3536 case SEC_LINK_DUPLICATES_ONE_ONLY:
3537 aux->u.auxent.x_scn.x_comdat =
3538 IMAGE_COMDAT_SELECT_NODUPLICATES;
3539 break;
3540
3541 case SEC_LINK_DUPLICATES_SAME_SIZE:
3542 aux->u.auxent.x_scn.x_comdat =
3543 IMAGE_COMDAT_SELECT_SAME_SIZE;
3544 break;
3545
3546 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
3547 aux->u.auxent.x_scn.x_comdat =
3548 IMAGE_COMDAT_SELECT_EXACT_MATCH;
3549 break;
3550 }
3551
3552 /* The COMDAT symbol must be the first symbol from this
3553 section in the symbol table. In order to make this
3554 work, we move the COMDAT symbol before the first
3555 symbol we found in the search above. It's OK to
3556 rearrange the symbol table at this point, because
3557 coff_renumber_symbols is going to rearrange it
3558 further and fix up all the aux entries. */
3559 if (psym != psymsec)
3560 {
3561 asymbol *hold;
3562 asymbol **pcopy;
3563
3564 hold = *psym;
3565 for (pcopy = psym; pcopy > psymsec; pcopy--)
3566 pcopy[0] = pcopy[-1];
3567 *psymsec = hold;
3568 }
3569 }
3570 }
3571 #endif /* COFF_WITH_PE */
3572 }
3573
3574 #ifdef RS6000COFF_C
3575 #ifndef XCOFF64
3576 /* XCOFF handles overflows in the reloc and line number count fields
3577 by creating a new section header to hold the correct values. */
3578 for (current = abfd->sections; current != NULL; current = current->next)
3579 {
3580 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3581 {
3582 struct internal_scnhdr scnhdr;
3583 SCNHDR buff;
3584 bfd_size_type amt;
3585
3586 internal_f.f_nscns++;
3587 strncpy (&(scnhdr.s_name[0]), current->name, 8);
3588 scnhdr.s_paddr = current->reloc_count;
3589 scnhdr.s_vaddr = current->lineno_count;
3590 scnhdr.s_size = 0;
3591 scnhdr.s_scnptr = 0;
3592 scnhdr.s_relptr = current->rel_filepos;
3593 scnhdr.s_lnnoptr = current->line_filepos;
3594 scnhdr.s_nreloc = current->target_index;
3595 scnhdr.s_nlnno = current->target_index;
3596 scnhdr.s_flags = STYP_OVRFLO;
3597 amt = bfd_coff_scnhsz (abfd);
3598 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
3599 || bfd_bwrite ((PTR) &buff, amt, abfd) != amt)
3600 return false;
3601 }
3602 }
3603 #endif
3604 #endif
3605
3606 /* OK, now set up the filehdr... */
3607
3608 /* Don't include the internal abs section in the section count */
3609
3610 /*
3611 We will NOT put a fucking timestamp in the header here. Every time you
3612 put it back, I will come in and take it out again. I'm sorry. This
3613 field does not belong here. We fill it with a 0 so it compares the
3614 same but is not a reasonable time. -- gnu@cygnus.com
3615 */
3616 internal_f.f_timdat = 0;
3617
3618 internal_f.f_flags = 0;
3619
3620 if (abfd->flags & EXEC_P)
3621 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3622 else
3623 {
3624 internal_f.f_opthdr = 0;
3625 #ifdef RS6000COFF_C
3626 #ifndef XCOFF64
3627 if (xcoff_data (abfd)->full_aouthdr)
3628 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3629 else
3630 internal_f.f_opthdr = SMALL_AOUTSZ;
3631 #endif
3632 #endif
3633 }
3634
3635 if (!hasrelocs)
3636 internal_f.f_flags |= F_RELFLG;
3637 if (!haslinno)
3638 internal_f.f_flags |= F_LNNO;
3639 if (abfd->flags & EXEC_P)
3640 internal_f.f_flags |= F_EXEC;
3641 #ifdef COFF_IMAGE_WITH_PE
3642 if (! hasdebug)
3643 internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED;
3644 #endif
3645
3646 #ifndef COFF_WITH_PE
3647 if (bfd_little_endian (abfd))
3648 internal_f.f_flags |= F_AR32WR;
3649 else
3650 internal_f.f_flags |= F_AR32W;
3651 #endif
3652
3653 #ifdef TI_TARGET_ID
3654 /* target id is used in TI COFF v1 and later; COFF0 won't use this field,
3655 but it doesn't hurt to set it internally */
3656 internal_f.f_target_id = TI_TARGET_ID;
3657 #endif
3658 #ifdef TIC80_TARGET_ID
3659 internal_f.f_target_id = TIC80_TARGET_ID;
3660 #endif
3661
3662 /*
3663 FIXME, should do something about the other byte orders and
3664 architectures.
3665 */
3666
3667 #ifdef RS6000COFF_C
3668 if ((abfd->flags & DYNAMIC) != 0)
3669 internal_f.f_flags |= F_SHROBJ;
3670 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
3671 internal_f.f_flags |= F_DYNLOAD;
3672 #endif
3673
3674 memset (&internal_a, 0, sizeof internal_a);
3675
3676 /* Set up architecture-dependent stuff */
3677
3678 {
3679 unsigned int magic = 0;
3680 unsigned short flags = 0;
3681 coff_set_flags (abfd, &magic, &flags);
3682 internal_f.f_magic = magic;
3683 internal_f.f_flags |= flags;
3684 /* ...and the "opt"hdr... */
3685
3686 #ifdef A29K
3687 #ifdef ULTRA3 /* NYU's machine */
3688 /* FIXME: This is a bogus check. I really want to see if there
3689 * is a .shbss or a .shdata section, if so then set the magic
3690 * number to indicate a shared data executable.
3691 */
3692 if (internal_f.f_nscns >= 7)
3693 internal_a.magic = SHMAGIC; /* Shared magic */
3694 else
3695 #endif /* ULTRA3 */
3696 internal_a.magic = NMAGIC; /* Assume separate i/d */
3697 #define __A_MAGIC_SET__
3698 #endif /* A29K */
3699 #ifdef TICOFF_AOUT_MAGIC
3700 internal_a.magic = TICOFF_AOUT_MAGIC;
3701 #define __A_MAGIC_SET__
3702 #endif
3703 #ifdef TIC80COFF
3704 internal_a.magic = TIC80_ARCH_MAGIC;
3705 #define __A_MAGIC_SET__
3706 #endif /* TIC80 */
3707 #ifdef I860
3708 /* FIXME: What are the a.out magic numbers for the i860? */
3709 internal_a.magic = 0;
3710 #define __A_MAGIC_SET__
3711 #endif /* I860 */
3712 #ifdef I960
3713 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
3714 #define __A_MAGIC_SET__
3715 #endif /* I960 */
3716 #if M88
3717 #define __A_MAGIC_SET__
3718 internal_a.magic = PAGEMAGICBCS;
3719 #endif /* M88 */
3720
3721 #if APOLLO_M68
3722 #define __A_MAGIC_SET__
3723 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
3724 #endif
3725
3726 #if defined(M68) || defined(WE32K) || defined(M68K)
3727 #define __A_MAGIC_SET__
3728 #if defined(LYNXOS)
3729 internal_a.magic = LYNXCOFFMAGIC;
3730 #else
3731 #if defined(TARG_AUX)
3732 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
3733 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
3734 PAGEMAGICEXECSWAPPED);
3735 #else
3736 #if defined (PAGEMAGICPEXECPAGED)
3737 internal_a.magic = PAGEMAGICPEXECPAGED;
3738 #endif
3739 #endif /* TARG_AUX */
3740 #endif /* LYNXOS */
3741 #endif /* M68 || WE32K || M68K */
3742
3743 #if defined(ARM)
3744 #define __A_MAGIC_SET__
3745 internal_a.magic = ZMAGIC;
3746 #endif
3747
3748 #if defined(PPC_PE)
3749 #define __A_MAGIC_SET__
3750 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3751 #endif
3752
3753 #if defined MCORE_PE
3754 #define __A_MAGIC_SET__
3755 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3756 #endif
3757
3758 #if defined(I386)
3759 #define __A_MAGIC_SET__
3760 #if defined(LYNXOS)
3761 internal_a.magic = LYNXCOFFMAGIC;
3762 #else /* LYNXOS */
3763 internal_a.magic = ZMAGIC;
3764 #endif /* LYNXOS */
3765 #endif /* I386 */
3766
3767 #if defined(IA64)
3768 #define __A_MAGIC_SET__
3769 internal_a.magic = ZMAGIC;
3770 #endif /* IA64 */
3771
3772 #if defined(SPARC)
3773 #define __A_MAGIC_SET__
3774 #if defined(LYNXOS)
3775 internal_a.magic = LYNXCOFFMAGIC;
3776 #endif /* LYNXOS */
3777 #endif /* SPARC */
3778
3779 #ifdef RS6000COFF_C
3780 #define __A_MAGIC_SET__
3781 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
3782 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
3783 RS6K_AOUTHDR_OMAGIC;
3784 #endif
3785
3786 #if defined(SH) && defined(COFF_WITH_PE)
3787 #define __A_MAGIC_SET__
3788 internal_a.magic = SH_PE_MAGIC;
3789 #endif
3790
3791 #if defined(MIPS) && defined(COFF_WITH_PE)
3792 #define __A_MAGIC_SET__
3793 internal_a.magic = MIPS_PE_MAGIC;
3794 #endif
3795
3796 #ifndef __A_MAGIC_SET__
3797 #include "Your aouthdr magic number is not being set!"
3798 #else
3799 #undef __A_MAGIC_SET__
3800 #endif
3801 }
3802
3803 /* FIXME: Does anybody ever set this to another value? */
3804 internal_a.vstamp = 0;
3805
3806 /* Now should write relocs, strings, syms */
3807 obj_sym_filepos (abfd) = sym_base;
3808
3809 if (bfd_get_symcount (abfd) != 0)
3810 {
3811 int firstundef;
3812 #if 0
3813 if (!coff_add_missing_symbols (abfd))
3814 return false;
3815 #endif
3816 if (!coff_renumber_symbols (abfd, &firstundef))
3817 return false;
3818 coff_mangle_symbols (abfd);
3819 if (! coff_write_symbols (abfd))
3820 return false;
3821 if (! coff_write_linenumbers (abfd))
3822 return false;
3823 if (! coff_write_relocs (abfd, firstundef))
3824 return false;
3825 }
3826 #ifdef COFF_LONG_SECTION_NAMES
3827 else if (long_section_names && ! obj_coff_strings_written (abfd))
3828 {
3829 /* If we have long section names we have to write out the string
3830 table even if there are no symbols. */
3831 if (! coff_write_symbols (abfd))
3832 return false;
3833 }
3834 #endif
3835 #ifdef COFF_IMAGE_WITH_PE
3836 #ifdef PPC_PE
3837 else if ((abfd->flags & EXEC_P) != 0)
3838 {
3839 bfd_byte b;
3840
3841 /* PowerPC PE appears to require that all executable files be
3842 rounded up to the page size. */
3843 b = 0;
3844 if (bfd_seek (abfd,
3845 (file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
3846 SEEK_SET) != 0
3847 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
3848 return false;
3849 }
3850 #endif
3851 #endif
3852
3853 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
3854 backend linker, and obj_raw_syment_count is not valid until after
3855 coff_write_symbols is called. */
3856 if (obj_raw_syment_count (abfd) != 0)
3857 {
3858 internal_f.f_symptr = sym_base;
3859 #ifdef RS6000COFF_C
3860 /* AIX appears to require that F_RELFLG not be set if there are
3861 local symbols but no relocations. */
3862 internal_f.f_flags &=~ F_RELFLG;
3863 #endif
3864 }
3865 else
3866 {
3867 if (long_section_names)
3868 internal_f.f_symptr = sym_base;
3869 else
3870 internal_f.f_symptr = 0;
3871 internal_f.f_flags |= F_LSYMS;
3872 }
3873
3874 if (text_sec)
3875 {
3876 internal_a.tsize = bfd_get_section_size_before_reloc (text_sec);
3877 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
3878 }
3879 if (data_sec)
3880 {
3881 internal_a.dsize = bfd_get_section_size_before_reloc (data_sec);
3882 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
3883 }
3884 if (bss_sec)
3885 {
3886 internal_a.bsize = bfd_get_section_size_before_reloc (bss_sec);
3887 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
3888 internal_a.data_start = bss_sec->vma;
3889 }
3890
3891 internal_a.entry = bfd_get_start_address (abfd);
3892 internal_f.f_nsyms = obj_raw_syment_count (abfd);
3893
3894 #ifdef RS6000COFF_C
3895 if (xcoff_data (abfd)->full_aouthdr)
3896 {
3897 bfd_vma toc;
3898 asection *loader_sec;
3899
3900 internal_a.vstamp = 1;
3901
3902 internal_a.o_snentry = xcoff_data (abfd)->snentry;
3903 if (internal_a.o_snentry == 0)
3904 internal_a.entry = (bfd_vma) -1;
3905
3906 if (text_sec != NULL)
3907 {
3908 internal_a.o_sntext = text_sec->target_index;
3909 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
3910 }
3911 else
3912 {
3913 internal_a.o_sntext = 0;
3914 internal_a.o_algntext = 0;
3915 }
3916 if (data_sec != NULL)
3917 {
3918 internal_a.o_sndata = data_sec->target_index;
3919 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
3920 }
3921 else
3922 {
3923 internal_a.o_sndata = 0;
3924 internal_a.o_algndata = 0;
3925 }
3926 loader_sec = bfd_get_section_by_name (abfd, ".loader");
3927 if (loader_sec != NULL)
3928 internal_a.o_snloader = loader_sec->target_index;
3929 else
3930 internal_a.o_snloader = 0;
3931 if (bss_sec != NULL)
3932 internal_a.o_snbss = bss_sec->target_index;
3933 else
3934 internal_a.o_snbss = 0;
3935
3936 toc = xcoff_data (abfd)->toc;
3937 internal_a.o_toc = toc;
3938 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
3939
3940 internal_a.o_modtype = xcoff_data (abfd)->modtype;
3941 if (xcoff_data (abfd)->cputype != -1)
3942 internal_a.o_cputype = xcoff_data (abfd)->cputype;
3943 else
3944 {
3945 switch (bfd_get_arch (abfd))
3946 {
3947 case bfd_arch_rs6000:
3948 internal_a.o_cputype = 4;
3949 break;
3950 case bfd_arch_powerpc:
3951 if (bfd_get_mach (abfd) == 0)
3952 internal_a.o_cputype = 3;
3953 else
3954 internal_a.o_cputype = 1;
3955 break;
3956 default:
3957 abort ();
3958 }
3959 }
3960 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
3961 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
3962 }
3963 #endif
3964
3965 /* now write them */
3966 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
3967 return false;
3968
3969 {
3970 char * buff;
3971 bfd_size_type amount = bfd_coff_filhsz (abfd);
3972
3973 buff = bfd_malloc (amount);
3974 if (buff == NULL)
3975 return false;
3976
3977 bfd_coff_swap_filehdr_out (abfd, (PTR) &internal_f, (PTR) buff);
3978 amount = bfd_bwrite ((PTR) buff, amount, abfd);
3979
3980 free (buff);
3981
3982 if (amount != bfd_coff_filhsz (abfd))
3983 return false;
3984 }
3985
3986 if (abfd->flags & EXEC_P)
3987 {
3988 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
3989 include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)) */
3990 char * buff;
3991 bfd_size_type amount = bfd_coff_aoutsz (abfd);
3992
3993 buff = bfd_malloc (amount);
3994 if (buff == NULL)
3995 return false;
3996
3997 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) buff);
3998 amount = bfd_bwrite ((PTR) buff, amount, abfd);
3999
4000 free (buff);
4001
4002 if (amount != bfd_coff_aoutsz (abfd))
4003 return false;
4004 }
4005 #ifdef RS6000COFF_C
4006 else
4007 {
4008 AOUTHDR buff;
4009 size_t size;
4010
4011 /* XCOFF seems to always write at least a small a.out header. */
4012 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff);
4013 if (xcoff_data (abfd)->full_aouthdr)
4014 size = bfd_coff_aoutsz (abfd);
4015 else
4016 size = SMALL_AOUTSZ;
4017 if (bfd_bwrite ((PTR) &buff, (bfd_size_type) size, abfd) != size)
4018 return false;
4019 }
4020 #endif
4021
4022 return true;
4023 }
4024
4025 static boolean
4026 coff_set_section_contents (abfd, section, location, offset, count)
4027 bfd * abfd;
4028 sec_ptr section;
4029 PTR location;
4030 file_ptr offset;
4031 bfd_size_type count;
4032 {
4033 if (abfd->output_has_begun == false) /* set by bfd.c handler */
4034 {
4035 if (! coff_compute_section_file_positions (abfd))
4036 return false;
4037 }
4038
4039 #if defined(_LIB) && !defined(TARG_AUX)
4040
4041 /* The physical address field of a .lib section is used to hold the
4042 number of shared libraries in the section. This code counts the
4043 number of sections being written, and increments the lma field
4044 with the number.
4045
4046 I have found no documentation on the contents of this section.
4047 Experimentation indicates that the section contains zero or more
4048 records, each of which has the following structure:
4049
4050 - a (four byte) word holding the length of this record, in words,
4051 - a word that always seems to be set to "2",
4052 - the path to a shared library, null-terminated and then padded
4053 to a whole word boundary.
4054
4055 bfd_assert calls have been added to alert if an attempt is made
4056 to write a section which doesn't follow these assumptions. The
4057 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4058 <robertl@arnet.com> (Thanks!).
4059
4060 Gvran Uddeborg <gvran@uddeborg.pp.se> */
4061
4062 if (strcmp (section->name, _LIB) == 0)
4063 {
4064 bfd_byte *rec, *recend;
4065
4066 rec = (bfd_byte *) location;
4067 recend = rec + count;
4068 while (rec < recend)
4069 {
4070 ++section->lma;
4071 rec += bfd_get_32 (abfd, rec) * 4;
4072 }
4073
4074 BFD_ASSERT (rec == recend);
4075 }
4076
4077 #endif
4078
4079 /* Don't write out bss sections - one way to do this is to
4080 see if the filepos has not been set. */
4081 if (section->filepos == 0)
4082 return true;
4083
4084 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
4085 return false;
4086
4087 if (count == 0)
4088 return true;
4089
4090 return bfd_bwrite (location, count, abfd) == count;
4091 }
4092 #if 0
4093 static boolean
4094 coff_close_and_cleanup (abfd)
4095 bfd *abfd;
4096 {
4097 if (!bfd_read_p (abfd))
4098 switch (abfd->format)
4099 {
4100 case bfd_archive:
4101 if (!_bfd_write_archive_contents (abfd))
4102 return false;
4103 break;
4104 case bfd_object:
4105 if (!coff_write_object_contents (abfd))
4106 return false;
4107 break;
4108 default:
4109 bfd_set_error (bfd_error_invalid_operation);
4110 return false;
4111 }
4112
4113 /* We depend on bfd_close to free all the memory on the objalloc. */
4114 return true;
4115 }
4116
4117 #endif
4118
4119 static PTR
4120 buy_and_read (abfd, where, size)
4121 bfd *abfd;
4122 file_ptr where;
4123 bfd_size_type size;
4124 {
4125 PTR area = (PTR) bfd_alloc (abfd, size);
4126 if (!area)
4127 return (NULL);
4128 if (bfd_seek (abfd, where, SEEK_SET) != 0
4129 || bfd_bread (area, size, abfd) != size)
4130 return (NULL);
4131 return (area);
4132 } /* buy_and_read() */
4133
4134 /*
4135 SUBSUBSECTION
4136 Reading linenumbers
4137
4138 Creating the linenumber table is done by reading in the entire
4139 coff linenumber table, and creating another table for internal use.
4140
4141 A coff linenumber table is structured so that each function
4142 is marked as having a line number of 0. Each line within the
4143 function is an offset from the first line in the function. The
4144 base of the line number information for the table is stored in
4145 the symbol associated with the function.
4146
4147 Note: The PE format uses line number 0 for a flag indicating a
4148 new source file.
4149
4150 The information is copied from the external to the internal
4151 table, and each symbol which marks a function is marked by
4152 pointing its...
4153
4154 How does this work ?
4155
4156 */
4157
4158 static boolean
4159 coff_slurp_line_table (abfd, asect)
4160 bfd *abfd;
4161 asection *asect;
4162 {
4163 LINENO *native_lineno;
4164 alent *lineno_cache;
4165 bfd_size_type amt;
4166
4167 BFD_ASSERT (asect->lineno == (alent *) NULL);
4168
4169 amt = (bfd_size_type) bfd_coff_linesz (abfd) * asect->lineno_count;
4170 native_lineno = (LINENO *) buy_and_read (abfd, asect->line_filepos, amt);
4171 amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent);
4172 lineno_cache = (alent *) bfd_alloc (abfd, amt);
4173 if (lineno_cache == NULL)
4174 return false;
4175 else
4176 {
4177 unsigned int counter = 0;
4178 alent *cache_ptr = lineno_cache;
4179 LINENO *src = native_lineno;
4180
4181 while (counter < asect->lineno_count)
4182 {
4183 struct internal_lineno dst;
4184 bfd_coff_swap_lineno_in (abfd, src, &dst);
4185 cache_ptr->line_number = dst.l_lnno;
4186
4187 if (cache_ptr->line_number == 0)
4188 {
4189 boolean warned;
4190 bfd_signed_vma symndx;
4191 coff_symbol_type *sym;
4192
4193 warned = false;
4194 symndx = dst.l_addr.l_symndx;
4195 if (symndx < 0
4196 || (bfd_vma) symndx >= obj_raw_syment_count (abfd))
4197 {
4198 (*_bfd_error_handler)
4199 (_("%s: warning: illegal symbol index %ld in line numbers"),
4200 bfd_archive_filename (abfd), dst.l_addr.l_symndx);
4201 symndx = 0;
4202 warned = true;
4203 }
4204 /* FIXME: We should not be casting between ints and
4205 pointers like this. */
4206 sym = ((coff_symbol_type *)
4207 ((symndx + obj_raw_syments (abfd))
4208 ->u.syment._n._n_n._n_zeroes));
4209 cache_ptr->u.sym = (asymbol *) sym;
4210 if (sym->lineno != NULL && ! warned)
4211 {
4212 (*_bfd_error_handler)
4213 (_("%s: warning: duplicate line number information for `%s'"),
4214 bfd_archive_filename (abfd),
4215 bfd_asymbol_name (&sym->symbol));
4216 }
4217 sym->lineno = cache_ptr;
4218 }
4219 else
4220 {
4221 cache_ptr->u.offset = dst.l_addr.l_paddr
4222 - bfd_section_vma (abfd, asect);
4223 } /* If no linenumber expect a symbol index */
4224
4225 cache_ptr++;
4226 src++;
4227 counter++;
4228 }
4229 cache_ptr->line_number = 0;
4230
4231 }
4232 asect->lineno = lineno_cache;
4233 /* FIXME, free native_lineno here, or use alloca or something. */
4234 return true;
4235 }
4236
4237 /* Slurp in the symbol table, converting it to generic form. Note
4238 that if coff_relocate_section is defined, the linker will read
4239 symbols via coff_link_add_symbols, rather than via this routine. */
4240
4241 static boolean
4242 coff_slurp_symbol_table (abfd)
4243 bfd * abfd;
4244 {
4245 combined_entry_type *native_symbols;
4246 coff_symbol_type *cached_area;
4247 unsigned int *table_ptr;
4248 bfd_size_type amt;
4249
4250 unsigned int number_of_symbols = 0;
4251
4252 if (obj_symbols (abfd))
4253 return true;
4254
4255 /* Read in the symbol table */
4256 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
4257 {
4258 return (false);
4259 } /* on error */
4260
4261 /* Allocate enough room for all the symbols in cached form */
4262 amt = obj_raw_syment_count (abfd);
4263 amt *= sizeof (coff_symbol_type);
4264 cached_area = (coff_symbol_type *) bfd_alloc (abfd, amt);
4265 if (cached_area == NULL)
4266 return false;
4267
4268 amt = obj_raw_syment_count (abfd);
4269 amt *= sizeof (unsigned int);
4270 table_ptr = (unsigned int *) bfd_alloc (abfd, amt);
4271
4272 if (table_ptr == NULL)
4273 return false;
4274 else
4275 {
4276 coff_symbol_type *dst = cached_area;
4277 unsigned int last_native_index = obj_raw_syment_count (abfd);
4278 unsigned int this_index = 0;
4279 while (this_index < last_native_index)
4280 {
4281 combined_entry_type *src = native_symbols + this_index;
4282 table_ptr[this_index] = number_of_symbols;
4283 dst->symbol.the_bfd = abfd;
4284
4285 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
4286 /* We use the native name field to point to the cached field. */
4287 src->u.syment._n._n_n._n_zeroes = (long) dst;
4288 dst->symbol.section = coff_section_from_bfd_index (abfd,
4289 src->u.syment.n_scnum);
4290 dst->symbol.flags = 0;
4291 dst->done_lineno = false;
4292
4293 switch (src->u.syment.n_sclass)
4294 {
4295 #ifdef I960
4296 case C_LEAFEXT:
4297 #if 0
4298 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
4299 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4300 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4301 #endif
4302 /* Fall through to next case */
4303
4304 #endif
4305
4306 case C_EXT:
4307 case C_WEAKEXT:
4308 #if defined ARM
4309 case C_THUMBEXT:
4310 case C_THUMBEXTFUNC:
4311 #endif
4312 #ifdef RS6000COFF_C
4313 case C_HIDEXT:
4314 #endif
4315 #ifdef C_SYSTEM
4316 case C_SYSTEM: /* System Wide variable */
4317 #endif
4318 #ifdef COFF_WITH_PE
4319 /* In PE, 0x68 (104) denotes a section symbol */
4320 case C_SECTION:
4321 /* In PE, 0x69 (105) denotes a weak external symbol. */
4322 case C_NT_WEAK:
4323 #endif
4324 switch (coff_classify_symbol (abfd, &src->u.syment))
4325 {
4326 case COFF_SYMBOL_GLOBAL:
4327 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4328 #if defined COFF_WITH_PE
4329 /* PE sets the symbol to a value relative to the
4330 start of the section. */
4331 dst->symbol.value = src->u.syment.n_value;
4332 #else
4333 dst->symbol.value = (src->u.syment.n_value
4334 - dst->symbol.section->vma);
4335 #endif
4336 if (ISFCN ((src->u.syment.n_type)))
4337 {
4338 /* A function ext does not go at the end of a
4339 file. */
4340 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4341 }
4342 break;
4343
4344 case COFF_SYMBOL_COMMON:
4345 dst->symbol.section = bfd_com_section_ptr;
4346 dst->symbol.value = src->u.syment.n_value;
4347 break;
4348
4349 case COFF_SYMBOL_UNDEFINED:
4350 dst->symbol.section = bfd_und_section_ptr;
4351 dst->symbol.value = 0;
4352 break;
4353
4354 case COFF_SYMBOL_PE_SECTION:
4355 dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM;
4356 dst->symbol.value = 0;
4357 break;
4358
4359 case COFF_SYMBOL_LOCAL:
4360 dst->symbol.flags = BSF_LOCAL;
4361 #if defined COFF_WITH_PE
4362 /* PE sets the symbol to a value relative to the
4363 start of the section. */
4364 dst->symbol.value = src->u.syment.n_value;
4365 #else
4366 dst->symbol.value = (src->u.syment.n_value
4367 - dst->symbol.section->vma);
4368 #endif
4369 if (ISFCN ((src->u.syment.n_type)))
4370 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4371 break;
4372 }
4373
4374 #ifdef RS6000COFF_C
4375 /* A symbol with a csect entry should not go at the end. */
4376 if (src->u.syment.n_numaux > 0)
4377 dst->symbol.flags |= BSF_NOT_AT_END;
4378 #endif
4379
4380 #ifdef COFF_WITH_PE
4381 if (src->u.syment.n_sclass == C_NT_WEAK)
4382 dst->symbol.flags = BSF_WEAK;
4383 if (src->u.syment.n_sclass == C_SECTION
4384 && src->u.syment.n_scnum > 0)
4385 {
4386 dst->symbol.flags = BSF_LOCAL;
4387 }
4388 #endif
4389
4390 if (src->u.syment.n_sclass == C_WEAKEXT)
4391 dst->symbol.flags = BSF_WEAK;
4392
4393 break;
4394
4395 case C_STAT: /* static */
4396 #ifdef I960
4397 case C_LEAFSTAT: /* static leaf procedure */
4398 #endif
4399 #if defined ARM
4400 case C_THUMBSTAT: /* Thumb static */
4401 case C_THUMBLABEL: /* Thumb label */
4402 case C_THUMBSTATFUNC:/* Thumb static function */
4403 #endif
4404 case C_LABEL: /* label */
4405 if (src->u.syment.n_scnum == N_DEBUG)
4406 dst->symbol.flags = BSF_DEBUGGING;
4407 else
4408 dst->symbol.flags = BSF_LOCAL;
4409
4410 /* Base the value as an index from the base of the
4411 section, if there is one. */
4412 if (dst->symbol.section)
4413 {
4414 #if defined COFF_WITH_PE
4415 /* PE sets the symbol to a value relative to the
4416 start of the section. */
4417 dst->symbol.value = src->u.syment.n_value;
4418 #else
4419 dst->symbol.value = (src->u.syment.n_value
4420 - dst->symbol.section->vma);
4421 #endif
4422 }
4423 else
4424 dst->symbol.value = src->u.syment.n_value;
4425 break;
4426
4427 case C_MOS: /* member of structure */
4428 case C_EOS: /* end of structure */
4429 #ifdef NOTDEF /* C_AUTOARG has the same value */
4430 #ifdef C_GLBLREG
4431 case C_GLBLREG: /* A29k-specific storage class */
4432 #endif
4433 #endif
4434 case C_REGPARM: /* register parameter */
4435 case C_REG: /* register variable */
4436 /* C_AUTOARG conflictes with TI COFF C_UEXT */
4437 #if !defined (TIC80COFF) && !defined (TICOFF)
4438 #ifdef C_AUTOARG
4439 case C_AUTOARG: /* 960-specific storage class */
4440 #endif
4441 #endif
4442 case C_TPDEF: /* type definition */
4443 case C_ARG:
4444 case C_AUTO: /* automatic variable */
4445 case C_FIELD: /* bit field */
4446 case C_ENTAG: /* enumeration tag */
4447 case C_MOE: /* member of enumeration */
4448 case C_MOU: /* member of union */
4449 case C_UNTAG: /* union tag */
4450 dst->symbol.flags = BSF_DEBUGGING;
4451 dst->symbol.value = (src->u.syment.n_value);
4452 break;
4453
4454 case C_FILE: /* file name */
4455 case C_STRTAG: /* structure tag */
4456 #ifdef RS6000COFF_C
4457 case C_GSYM:
4458 case C_LSYM:
4459 case C_PSYM:
4460 case C_RSYM:
4461 case C_RPSYM:
4462 case C_STSYM:
4463 case C_BCOMM:
4464 case C_ECOMM:
4465 case C_DECL:
4466 case C_ENTRY:
4467 case C_FUN:
4468 case C_ESTAT:
4469 #endif
4470 dst->symbol.flags = BSF_DEBUGGING;
4471 dst->symbol.value = (src->u.syment.n_value);
4472 break;
4473
4474 #ifdef RS6000COFF_C
4475 case C_BINCL: /* beginning of include file */
4476 case C_EINCL: /* ending of include file */
4477 /* The value is actually a pointer into the line numbers
4478 of the file. We locate the line number entry, and
4479 set the section to the section which contains it, and
4480 the value to the index in that section. */
4481 {
4482 asection *sec;
4483
4484 dst->symbol.flags = BSF_DEBUGGING;
4485 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4486 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
4487 && ((file_ptr) (sec->line_filepos
4488 + sec->lineno_count * bfd_coff_linesz (abfd))
4489 > (file_ptr) src->u.syment.n_value))
4490 break;
4491 if (sec == NULL)
4492 dst->symbol.value = 0;
4493 else
4494 {
4495 dst->symbol.section = sec;
4496 dst->symbol.value = ((src->u.syment.n_value
4497 - sec->line_filepos)
4498 / bfd_coff_linesz (abfd));
4499 src->fix_line = 1;
4500 }
4501 }
4502 break;
4503
4504 case C_BSTAT:
4505 dst->symbol.flags = BSF_DEBUGGING;
4506
4507 /* The value is actually a symbol index. Save a pointer
4508 to the symbol instead of the index. FIXME: This
4509 should use a union. */
4510 src->u.syment.n_value =
4511 (long) (native_symbols + src->u.syment.n_value);
4512 dst->symbol.value = src->u.syment.n_value;
4513 src->fix_value = 1;
4514 break;
4515 #endif
4516
4517 case C_BLOCK: /* ".bb" or ".eb" */
4518 case C_FCN: /* ".bf" or ".ef" (or PE ".lf") */
4519 case C_EFCN: /* physical end of function */
4520 #if defined COFF_WITH_PE
4521 /* PE sets the symbol to a value relative to the start
4522 of the section. */
4523 dst->symbol.value = src->u.syment.n_value;
4524 if (strcmp (dst->symbol.name, ".bf") != 0)
4525 {
4526 /* PE uses funny values for .ef and .lf; don't
4527 relocate them. */
4528 dst->symbol.flags = BSF_DEBUGGING;
4529 }
4530 else
4531 dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC;
4532 #else
4533 /* Base the value as an index from the base of the
4534 section. */
4535 dst->symbol.flags = BSF_LOCAL;
4536 dst->symbol.value = (src->u.syment.n_value
4537 - dst->symbol.section->vma);
4538 #endif
4539 break;
4540
4541 case C_STATLAB: /* Static load time label */
4542 dst->symbol.value = src->u.syment.n_value;
4543 dst->symbol.flags = BSF_GLOBAL;
4544 break;
4545
4546 case C_NULL:
4547 /* PE DLLs sometimes have zeroed out symbols for some
4548 reason. Just ignore them without a warning. */
4549 if (src->u.syment.n_type == 0
4550 && src->u.syment.n_value == 0
4551 && src->u.syment.n_scnum == 0)
4552 break;
4553 /* Fall through. */
4554 case C_EXTDEF: /* external definition */
4555 case C_ULABEL: /* undefined label */
4556 case C_USTATIC: /* undefined static */
4557 #ifndef COFF_WITH_PE
4558 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4559 class to represent a section symbol */
4560 case C_LINE: /* line # reformatted as symbol table entry */
4561 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4562 case C_ALIAS: /* duplicate tag */
4563 #endif
4564 /* New storage classes for TI COFF */
4565 #if defined(TIC80COFF) || defined(TICOFF)
4566 case C_UEXT: /* Tentative external definition */
4567 #endif
4568 case C_EXTLAB: /* External load time label */
4569 case C_HIDDEN: /* ext symbol in dmert public lib */
4570 default:
4571 (*_bfd_error_handler)
4572 (_("%s: Unrecognized storage class %d for %s symbol `%s'"),
4573 bfd_archive_filename (abfd), src->u.syment.n_sclass,
4574 dst->symbol.section->name, dst->symbol.name);
4575 dst->symbol.flags = BSF_DEBUGGING;
4576 dst->symbol.value = (src->u.syment.n_value);
4577 break;
4578 }
4579
4580 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4581
4582 dst->native = src;
4583
4584 dst->symbol.udata.i = 0;
4585 dst->lineno = (alent *) NULL;
4586 this_index += (src->u.syment.n_numaux) + 1;
4587 dst++;
4588 number_of_symbols++;
4589 } /* walk the native symtab */
4590 } /* bfdize the native symtab */
4591
4592 obj_symbols (abfd) = cached_area;
4593 obj_raw_syments (abfd) = native_symbols;
4594
4595 bfd_get_symcount (abfd) = number_of_symbols;
4596 obj_convert (abfd) = table_ptr;
4597 /* Slurp the line tables for each section too */
4598 {
4599 asection *p;
4600 p = abfd->sections;
4601 while (p)
4602 {
4603 coff_slurp_line_table (abfd, p);
4604 p = p->next;
4605 }
4606 }
4607 return true;
4608 } /* coff_slurp_symbol_table() */
4609
4610 /* Classify a COFF symbol. A couple of targets have globally visible
4611 symbols which are not class C_EXT, and this handles those. It also
4612 recognizes some special PE cases. */
4613
4614 static enum coff_symbol_classification
4615 coff_classify_symbol (abfd, syment)
4616 bfd *abfd;
4617 struct internal_syment *syment;
4618 {
4619 /* FIXME: This partially duplicates the switch in
4620 coff_slurp_symbol_table. */
4621 switch (syment->n_sclass)
4622 {
4623 case C_EXT:
4624 case C_WEAKEXT:
4625 #ifdef I960
4626 case C_LEAFEXT:
4627 #endif
4628 #ifdef ARM
4629 case C_THUMBEXT:
4630 case C_THUMBEXTFUNC:
4631 #endif
4632 #ifdef C_SYSTEM
4633 case C_SYSTEM:
4634 #endif
4635 #ifdef COFF_WITH_PE
4636 case C_NT_WEAK:
4637 #endif
4638 if (syment->n_scnum == 0)
4639 {
4640 if (syment->n_value == 0)
4641 return COFF_SYMBOL_UNDEFINED;
4642 else
4643 return COFF_SYMBOL_COMMON;
4644 }
4645 return COFF_SYMBOL_GLOBAL;
4646
4647 default:
4648 break;
4649 }
4650
4651 #ifdef COFF_WITH_PE
4652 if (syment->n_sclass == C_STAT)
4653 {
4654 if (syment->n_scnum == 0)
4655 {
4656 /* The Microsoft compiler sometimes generates these if a
4657 small static function is inlined every time it is used.
4658 The function is discarded, but the symbol table entry
4659 remains. */
4660 return COFF_SYMBOL_LOCAL;
4661 }
4662
4663 #ifdef STRICT_PE_FORMAT
4664 /* This is correct for Microsoft generated objects, but it
4665 breaks gas generated objects. */
4666
4667 if (syment->n_value == 0)
4668 {
4669 asection *sec;
4670 char buf[SYMNMLEN + 1];
4671
4672 sec = coff_section_from_bfd_index (abfd, syment->n_scnum);
4673 if (sec != NULL
4674 && (strcmp (bfd_get_section_name (abfd, sec),
4675 _bfd_coff_internal_syment_name (abfd, syment, buf))
4676 == 0))
4677 return COFF_SYMBOL_PE_SECTION;
4678 }
4679 #endif
4680
4681 return COFF_SYMBOL_LOCAL;
4682 }
4683
4684 if (syment->n_sclass == C_SECTION)
4685 {
4686 /* In some cases in a DLL generated by the Microsoft linker, the
4687 n_value field will contain garbage. FIXME: This should
4688 probably be handled by the swapping function instead. */
4689 syment->n_value = 0;
4690 if (syment->n_scnum == 0)
4691 return COFF_SYMBOL_UNDEFINED;
4692 return COFF_SYMBOL_PE_SECTION;
4693 }
4694 #endif /* COFF_WITH_PE */
4695
4696 /* If it is not a global symbol, we presume it is a local symbol. */
4697
4698 if (syment->n_scnum == 0)
4699 {
4700 char buf[SYMNMLEN + 1];
4701
4702 (*_bfd_error_handler)
4703 (_("warning: %s: local symbol `%s' has no section"),
4704 bfd_archive_filename (abfd),
4705 _bfd_coff_internal_syment_name (abfd, syment, buf));
4706 }
4707
4708 return COFF_SYMBOL_LOCAL;
4709 }
4710
4711 /*
4712 SUBSUBSECTION
4713 Reading relocations
4714
4715 Coff relocations are easily transformed into the internal BFD form
4716 (@code{arelent}).
4717
4718 Reading a coff relocation table is done in the following stages:
4719
4720 o Read the entire coff relocation table into memory.
4721
4722 o Process each relocation in turn; first swap it from the
4723 external to the internal form.
4724
4725 o Turn the symbol referenced in the relocation's symbol index
4726 into a pointer into the canonical symbol table.
4727 This table is the same as the one returned by a call to
4728 @code{bfd_canonicalize_symtab}. The back end will call that
4729 routine and save the result if a canonicalization hasn't been done.
4730
4731 o The reloc index is turned into a pointer to a howto
4732 structure, in a back end specific way. For instance, the 386
4733 and 960 use the @code{r_type} to directly produce an index
4734 into a howto table vector; the 88k subtracts a number from the
4735 @code{r_type} field and creates an addend field.
4736
4737 */
4738
4739 #ifndef CALC_ADDEND
4740 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
4741 { \
4742 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
4743 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
4744 coffsym = (obj_symbols (abfd) \
4745 + (cache_ptr->sym_ptr_ptr - symbols)); \
4746 else if (ptr) \
4747 coffsym = coff_symbol_from (abfd, ptr); \
4748 if (coffsym != (coff_symbol_type *) NULL \
4749 && coffsym->native->u.syment.n_scnum == 0) \
4750 cache_ptr->addend = 0; \
4751 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
4752 && ptr->section != (asection *) NULL) \
4753 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
4754 else \
4755 cache_ptr->addend = 0; \
4756 }
4757 #endif
4758
4759 static boolean
4760 coff_slurp_reloc_table (abfd, asect, symbols)
4761 bfd * abfd;
4762 sec_ptr asect;
4763 asymbol ** symbols;
4764 {
4765 RELOC *native_relocs;
4766 arelent *reloc_cache;
4767 arelent *cache_ptr;
4768 unsigned int idx;
4769 bfd_size_type amt;
4770
4771 if (asect->relocation)
4772 return true;
4773 if (asect->reloc_count == 0)
4774 return true;
4775 if (asect->flags & SEC_CONSTRUCTOR)
4776 return true;
4777 if (!coff_slurp_symbol_table (abfd))
4778 return false;
4779 amt = (bfd_size_type) bfd_coff_relsz (abfd) * asect->reloc_count;
4780 native_relocs = (RELOC *) buy_and_read (abfd, asect->rel_filepos, amt);
4781 amt = (bfd_size_type) asect->reloc_count * sizeof (arelent);
4782 reloc_cache = (arelent *) bfd_alloc (abfd, amt);
4783
4784 if (reloc_cache == NULL)
4785 return false;
4786
4787 for (idx = 0; idx < asect->reloc_count; idx++)
4788 {
4789 struct internal_reloc dst;
4790 struct external_reloc *src;
4791 #ifndef RELOC_PROCESSING
4792 asymbol *ptr;
4793 #endif
4794
4795 cache_ptr = reloc_cache + idx;
4796 src = native_relocs + idx;
4797
4798 coff_swap_reloc_in (abfd, src, &dst);
4799
4800 #ifdef RELOC_PROCESSING
4801 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
4802 #else
4803 cache_ptr->address = dst.r_vaddr;
4804
4805 if (dst.r_symndx != -1)
4806 {
4807 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
4808 {
4809 (*_bfd_error_handler)
4810 (_("%s: warning: illegal symbol index %ld in relocs"),
4811 bfd_archive_filename (abfd), dst.r_symndx);
4812 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
4813 ptr = NULL;
4814 }
4815 else
4816 {
4817 cache_ptr->sym_ptr_ptr = (symbols
4818 + obj_convert (abfd)[dst.r_symndx]);
4819 ptr = *(cache_ptr->sym_ptr_ptr);
4820 }
4821 }
4822 else
4823 {
4824 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
4825 ptr = NULL;
4826 }
4827
4828 /* The symbols definitions that we have read in have been
4829 relocated as if their sections started at 0. But the offsets
4830 refering to the symbols in the raw data have not been
4831 modified, so we have to have a negative addend to compensate.
4832
4833 Note that symbols which used to be common must be left alone */
4834
4835 /* Calculate any reloc addend by looking at the symbol */
4836 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
4837
4838 cache_ptr->address -= asect->vma;
4839 /* !! cache_ptr->section = (asection *) NULL;*/
4840
4841 /* Fill in the cache_ptr->howto field from dst.r_type */
4842 RTYPE2HOWTO (cache_ptr, &dst);
4843 #endif /* RELOC_PROCESSING */
4844
4845 if (cache_ptr->howto == NULL)
4846 {
4847 (*_bfd_error_handler)
4848 (_("%s: illegal relocation type %d at address 0x%lx"),
4849 bfd_archive_filename (abfd), dst.r_type, (long) dst.r_vaddr);
4850 bfd_set_error (bfd_error_bad_value);
4851 return false;
4852 }
4853 }
4854
4855 asect->relocation = reloc_cache;
4856 return true;
4857 }
4858
4859 #ifndef coff_rtype_to_howto
4860 #ifdef RTYPE2HOWTO
4861
4862 /* Get the howto structure for a reloc. This is only used if the file
4863 including this one defines coff_relocate_section to be
4864 _bfd_coff_generic_relocate_section, so it is OK if it does not
4865 always work. It is the responsibility of the including file to
4866 make sure it is reasonable if it is needed. */
4867
4868 static reloc_howto_type *coff_rtype_to_howto
4869 PARAMS ((bfd *, asection *, struct internal_reloc *,
4870 struct coff_link_hash_entry *, struct internal_syment *,
4871 bfd_vma *));
4872
4873 /*ARGSUSED*/
4874 static reloc_howto_type *
4875 coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
4876 bfd *abfd ATTRIBUTE_UNUSED;
4877 asection *sec ATTRIBUTE_UNUSED;
4878 struct internal_reloc *rel;
4879 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED;
4880 struct internal_syment *sym ATTRIBUTE_UNUSED;
4881 bfd_vma *addendp ATTRIBUTE_UNUSED;
4882 {
4883 arelent genrel;
4884
4885 RTYPE2HOWTO (&genrel, rel);
4886 return genrel.howto;
4887 }
4888
4889 #else /* ! defined (RTYPE2HOWTO) */
4890
4891 #define coff_rtype_to_howto NULL
4892
4893 #endif /* ! defined (RTYPE2HOWTO) */
4894 #endif /* ! defined (coff_rtype_to_howto) */
4895
4896 /* This is stupid. This function should be a boolean predicate. */
4897 static long
4898 coff_canonicalize_reloc (abfd, section, relptr, symbols)
4899 bfd * abfd;
4900 sec_ptr section;
4901 arelent ** relptr;
4902 asymbol ** symbols;
4903 {
4904 arelent *tblptr = section->relocation;
4905 unsigned int count = 0;
4906
4907 if (section->flags & SEC_CONSTRUCTOR)
4908 {
4909 /* this section has relocs made up by us, they are not in the
4910 file, so take them out of their chain and place them into
4911 the data area provided */
4912 arelent_chain *chain = section->constructor_chain;
4913 for (count = 0; count < section->reloc_count; count++)
4914 {
4915 *relptr++ = &chain->relent;
4916 chain = chain->next;
4917 }
4918
4919 }
4920 else
4921 {
4922 if (! coff_slurp_reloc_table (abfd, section, symbols))
4923 return -1;
4924
4925 tblptr = section->relocation;
4926
4927 for (; count++ < section->reloc_count;)
4928 *relptr++ = tblptr++;
4929 }
4930 *relptr = 0;
4931 return section->reloc_count;
4932 }
4933
4934 #ifdef GNU960
4935 file_ptr
4936 coff_sym_filepos (abfd)
4937 bfd *abfd;
4938 {
4939 return obj_sym_filepos (abfd);
4940 }
4941 #endif
4942
4943 #ifndef coff_reloc16_estimate
4944 #define coff_reloc16_estimate dummy_reloc16_estimate
4945
4946 static int dummy_reloc16_estimate
4947 PARAMS ((bfd *, asection *, arelent *, unsigned int,
4948 struct bfd_link_info *));
4949
4950 static int
4951 dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
4952 bfd *abfd ATTRIBUTE_UNUSED;
4953 asection *input_section ATTRIBUTE_UNUSED;
4954 arelent *reloc ATTRIBUTE_UNUSED;
4955 unsigned int shrink ATTRIBUTE_UNUSED;
4956 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
4957 {
4958 abort ();
4959 return 0;
4960 }
4961
4962 #endif
4963
4964 #ifndef coff_reloc16_extra_cases
4965
4966 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
4967
4968 /* This works even if abort is not declared in any header file. */
4969
4970 static void dummy_reloc16_extra_cases
4971 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
4972 bfd_byte *, unsigned int *, unsigned int *));
4973
4974 static void
4975 dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
4976 dst_ptr)
4977 bfd *abfd ATTRIBUTE_UNUSED;
4978 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
4979 struct bfd_link_order *link_order ATTRIBUTE_UNUSED;
4980 arelent *reloc ATTRIBUTE_UNUSED;
4981 bfd_byte *data ATTRIBUTE_UNUSED;
4982 unsigned int *src_ptr ATTRIBUTE_UNUSED;
4983 unsigned int *dst_ptr ATTRIBUTE_UNUSED;
4984 {
4985 abort ();
4986 }
4987 #endif
4988
4989 /* If coff_relocate_section is defined, we can use the optimized COFF
4990 backend linker. Otherwise we must continue to use the old linker. */
4991 #ifdef coff_relocate_section
4992 #ifndef coff_bfd_link_hash_table_create
4993 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
4994 #endif
4995 #ifndef coff_bfd_link_add_symbols
4996 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
4997 #endif
4998 #ifndef coff_bfd_final_link
4999 #define coff_bfd_final_link _bfd_coff_final_link
5000 #endif
5001 #else /* ! defined (coff_relocate_section) */
5002 #define coff_relocate_section NULL
5003 #ifndef coff_bfd_link_hash_table_create
5004 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
5005 #endif
5006 #ifndef coff_bfd_link_add_symbols
5007 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
5008 #endif
5009 #define coff_bfd_final_link _bfd_generic_final_link
5010 #endif /* ! defined (coff_relocate_section) */
5011
5012 #define coff_bfd_link_split_section _bfd_generic_link_split_section
5013
5014 #ifndef coff_start_final_link
5015 #define coff_start_final_link NULL
5016 #endif
5017
5018 #ifndef coff_adjust_symndx
5019 #define coff_adjust_symndx NULL
5020 #endif
5021
5022 #ifndef coff_link_add_one_symbol
5023 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5024 #endif
5025
5026 #ifndef coff_link_output_has_begun
5027
5028 static boolean coff_link_output_has_begun
5029 PARAMS ((bfd *, struct coff_final_link_info *));
5030
5031 static boolean
5032 coff_link_output_has_begun (abfd, info)
5033 bfd * abfd;
5034 struct coff_final_link_info * info ATTRIBUTE_UNUSED;
5035 {
5036 return abfd->output_has_begun;
5037 }
5038 #endif
5039
5040 #ifndef coff_final_link_postscript
5041
5042 static boolean coff_final_link_postscript
5043 PARAMS ((bfd *, struct coff_final_link_info *));
5044
5045 static boolean
5046 coff_final_link_postscript (abfd, pfinfo)
5047 bfd * abfd ATTRIBUTE_UNUSED;
5048 struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED;
5049 {
5050 return true;
5051 }
5052 #endif
5053
5054 #ifndef coff_SWAP_aux_in
5055 #define coff_SWAP_aux_in coff_swap_aux_in
5056 #endif
5057 #ifndef coff_SWAP_sym_in
5058 #define coff_SWAP_sym_in coff_swap_sym_in
5059 #endif
5060 #ifndef coff_SWAP_lineno_in
5061 #define coff_SWAP_lineno_in coff_swap_lineno_in
5062 #endif
5063 #ifndef coff_SWAP_aux_out
5064 #define coff_SWAP_aux_out coff_swap_aux_out
5065 #endif
5066 #ifndef coff_SWAP_sym_out
5067 #define coff_SWAP_sym_out coff_swap_sym_out
5068 #endif
5069 #ifndef coff_SWAP_lineno_out
5070 #define coff_SWAP_lineno_out coff_swap_lineno_out
5071 #endif
5072 #ifndef coff_SWAP_reloc_out
5073 #define coff_SWAP_reloc_out coff_swap_reloc_out
5074 #endif
5075 #ifndef coff_SWAP_filehdr_out
5076 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5077 #endif
5078 #ifndef coff_SWAP_aouthdr_out
5079 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5080 #endif
5081 #ifndef coff_SWAP_scnhdr_out
5082 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5083 #endif
5084 #ifndef coff_SWAP_reloc_in
5085 #define coff_SWAP_reloc_in coff_swap_reloc_in
5086 #endif
5087 #ifndef coff_SWAP_filehdr_in
5088 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5089 #endif
5090 #ifndef coff_SWAP_aouthdr_in
5091 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5092 #endif
5093 #ifndef coff_SWAP_scnhdr_in
5094 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5095 #endif
5096
5097 static const bfd_coff_backend_data bfd_coff_std_swap_table =
5098 {
5099 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5100 coff_SWAP_aux_out, coff_SWAP_sym_out,
5101 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5102 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5103 coff_SWAP_scnhdr_out,
5104 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5105 #ifdef COFF_LONG_FILENAMES
5106 true,
5107 #else
5108 false,
5109 #endif
5110 #ifdef COFF_LONG_SECTION_NAMES
5111 true,
5112 #else
5113 false,
5114 #endif
5115 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5116 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5117 true,
5118 #else
5119 false,
5120 #endif
5121 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5122 4,
5123 #else
5124 2,
5125 #endif
5126 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5127 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5128 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5129 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5130 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5131 coff_classify_symbol, coff_compute_section_file_positions,
5132 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5133 coff_adjust_symndx, coff_link_add_one_symbol,
5134 coff_link_output_has_begun, coff_final_link_postscript
5135 };
5136
5137 #ifndef coff_close_and_cleanup
5138 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5139 #endif
5140
5141 #ifndef coff_bfd_free_cached_info
5142 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5143 #endif
5144
5145 #ifndef coff_get_section_contents
5146 #define coff_get_section_contents _bfd_generic_get_section_contents
5147 #endif
5148
5149 #ifndef coff_bfd_copy_private_symbol_data
5150 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5151 #endif
5152
5153 #ifndef coff_bfd_copy_private_section_data
5154 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5155 #endif
5156
5157 #ifndef coff_bfd_copy_private_bfd_data
5158 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5159 #endif
5160
5161 #ifndef coff_bfd_merge_private_bfd_data
5162 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5163 #endif
5164
5165 #ifndef coff_bfd_set_private_flags
5166 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5167 #endif
5168
5169 #ifndef coff_bfd_print_private_bfd_data
5170 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5171 #endif
5172
5173 #ifndef coff_bfd_is_local_label_name
5174 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5175 #endif
5176
5177 #ifndef coff_read_minisymbols
5178 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5179 #endif
5180
5181 #ifndef coff_minisymbol_to_symbol
5182 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5183 #endif
5184
5185 /* The reloc lookup routine must be supplied by each individual COFF
5186 backend. */
5187 #ifndef coff_bfd_reloc_type_lookup
5188 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5189 #endif
5190
5191 #ifndef coff_bfd_get_relocated_section_contents
5192 #define coff_bfd_get_relocated_section_contents \
5193 bfd_generic_get_relocated_section_contents
5194 #endif
5195
5196 #ifndef coff_bfd_relax_section
5197 #define coff_bfd_relax_section bfd_generic_relax_section
5198 #endif
5199
5200 #ifndef coff_bfd_gc_sections
5201 #define coff_bfd_gc_sections bfd_generic_gc_sections
5202 #endif
5203
5204 #ifndef coff_bfd_merge_sections
5205 #define coff_bfd_merge_sections bfd_generic_merge_sections
5206 #endif
5207
5208 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5209 const bfd_target VAR = \
5210 { \
5211 NAME , \
5212 bfd_target_coff_flavour, \
5213 BFD_ENDIAN_BIG, /* data byte order is big */ \
5214 BFD_ENDIAN_BIG, /* header byte order is big */ \
5215 /* object flags */ \
5216 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5217 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5218 /* section flags */ \
5219 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5220 UNDER, /* leading symbol underscore */ \
5221 '/', /* ar_pad_char */ \
5222 15, /* ar_max_namelen */ \
5223 \
5224 /* Data conversion functions. */ \
5225 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5226 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5227 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5228 \
5229 /* Header conversion functions. */ \
5230 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5231 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5232 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5233 \
5234 /* bfd_check_format */ \
5235 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5236 _bfd_dummy_target }, \
5237 /* bfd_set_format */ \
5238 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5239 /* bfd_write_contents */ \
5240 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5241 bfd_false }, \
5242 \
5243 BFD_JUMP_TABLE_GENERIC (coff), \
5244 BFD_JUMP_TABLE_COPY (coff), \
5245 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5246 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5247 BFD_JUMP_TABLE_SYMBOLS (coff), \
5248 BFD_JUMP_TABLE_RELOCS (coff), \
5249 BFD_JUMP_TABLE_WRITE (coff), \
5250 BFD_JUMP_TABLE_LINK (coff), \
5251 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5252 \
5253 ALTERNATIVE, \
5254 \
5255 COFF_SWAP_TABLE \
5256 };
5257
5258 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5259 const bfd_target VAR = \
5260 { \
5261 NAME , \
5262 bfd_target_coff_flavour, \
5263 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5264 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5265 /* object flags */ \
5266 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5267 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5268 /* section flags */ \
5269 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5270 UNDER, /* leading symbol underscore */ \
5271 '/', /* ar_pad_char */ \
5272 15, /* ar_max_namelen */ \
5273 \
5274 /* Data conversion functions. */ \
5275 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5276 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5277 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5278 /* Header conversion functions. */ \
5279 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5280 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5281 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5282 /* bfd_check_format */ \
5283 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5284 _bfd_dummy_target }, \
5285 /* bfd_set_format */ \
5286 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5287 /* bfd_write_contents */ \
5288 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5289 bfd_false }, \
5290 \
5291 BFD_JUMP_TABLE_GENERIC (coff), \
5292 BFD_JUMP_TABLE_COPY (coff), \
5293 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5294 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5295 BFD_JUMP_TABLE_SYMBOLS (coff), \
5296 BFD_JUMP_TABLE_RELOCS (coff), \
5297 BFD_JUMP_TABLE_WRITE (coff), \
5298 BFD_JUMP_TABLE_LINK (coff), \
5299 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5300 \
5301 ALTERNATIVE, \
5302 \
5303 COFF_SWAP_TABLE \
5304 };
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