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[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, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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 3 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., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
23
24 /* Most of this hacked by Steve Chamberlain,
25 sac@cygnus.com. */
26 /*
27 SECTION
28 coff backends
29
30 BFD supports a number of different flavours of coff format.
31 The major differences between formats are the sizes and
32 alignments of fields in structures on disk, and the occasional
33 extra field.
34
35 Coff in all its varieties is implemented with a few common
36 files and a number of implementation specific files. For
37 example, The 88k bcs coff format is implemented in the file
38 @file{coff-m88k.c}. This file @code{#include}s
39 @file{coff/m88k.h} which defines the external structure of the
40 coff format for the 88k, and @file{coff/internal.h} which
41 defines the internal structure. @file{coff-m88k.c} also
42 defines the relocations used by the 88k format
43 @xref{Relocations}.
44
45 The Intel i960 processor version of coff is implemented in
46 @file{coff-i960.c}. This file has the same structure as
47 @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
48 rather than @file{coff-m88k.h}.
49
50 SUBSECTION
51 Porting to a new version of coff
52
53 The recommended method is to select from the existing
54 implementations the version of coff which is most like the one
55 you want to use. For example, we'll say that i386 coff is
56 the one you select, and that your coff flavour is called foo.
57 Copy @file{i386coff.c} to @file{foocoff.c}, copy
58 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
59 and add the lines to @file{targets.c} and @file{Makefile.in}
60 so that your new back end is used. Alter the shapes of the
61 structures in @file{../include/coff/foo.h} so that they match
62 what you need. You will probably also have to add
63 @code{#ifdef}s to the code in @file{coff/internal.h} and
64 @file{coffcode.h} if your version of coff is too wild.
65
66 You can verify that your new BFD backend works quite simply by
67 building @file{objdump} from the @file{binutils} directory,
68 and making sure that its version of what's going on and your
69 host system's idea (assuming it has the pretty standard coff
70 dump utility, usually called @code{att-dump} or just
71 @code{dump}) are the same. Then clean up your code, and send
72 what you've done to Cygnus. Then your stuff will be in the
73 next release, and you won't have to keep integrating it.
74
75 SUBSECTION
76 How the coff backend works
77
78 SUBSUBSECTION
79 File layout
80
81 The Coff backend is split into generic routines that are
82 applicable to any Coff target and routines that are specific
83 to a particular target. The target-specific routines are
84 further split into ones which are basically the same for all
85 Coff targets except that they use the external symbol format
86 or use different values for certain constants.
87
88 The generic routines are in @file{coffgen.c}. These routines
89 work for any Coff target. They use some hooks into the target
90 specific code; the hooks are in a @code{bfd_coff_backend_data}
91 structure, one of which exists for each target.
92
93 The essentially similar target-specific routines are in
94 @file{coffcode.h}. This header file includes executable C code.
95 The various Coff targets first include the appropriate Coff
96 header file, make any special defines that are needed, and
97 then include @file{coffcode.h}.
98
99 Some of the Coff targets then also have additional routines in
100 the target source file itself.
101
102 For example, @file{coff-i960.c} includes
103 @file{coff/internal.h} and @file{coff/i960.h}. It then
104 defines a few constants, such as @code{I960}, and includes
105 @file{coffcode.h}. Since the i960 has complex relocation
106 types, @file{coff-i960.c} also includes some code to
107 manipulate the i960 relocs. This code is not in
108 @file{coffcode.h} because it would not be used by any other
109 target.
110
111 SUBSUBSECTION
112 Coff long section names
113
114 In the standard Coff object format, section names are limited to
115 the eight bytes available in the @code{s_name} field of the
116 @code{SCNHDR} section header structure. The format requires the
117 field to be NUL-padded, but not necessarily NUL-terminated, so
118 the longest section names permitted are a full eight characters.
119
120 The Microsoft PE variants of the Coff object file format add
121 an extension to support the use of long section names. This
122 extension is defined in section 4 of the Microsoft PE/COFF
123 specification (rev 8.1). If a section name is too long to fit
124 into the section header's @code{s_name} field, it is instead
125 placed into the string table, and the @code{s_name} field is
126 filled with a slash ("/") followed by the ASCII decimal
127 representation of the offset of the full name relative to the
128 string table base.
129
130 Note that this implies that the extension can only be used in object
131 files, as executables do not contain a string table. The standard
132 specifies that long section names from objects emitted into executable
133 images are to be truncated.
134
135 However, as a GNU extension, BFD can generate executable images
136 that contain a string table and long section names. This
137 would appear to be technically valid, as the standard only says
138 that Coff debugging information is deprecated, not forbidden,
139 and in practice it works, although some tools that parse PE files
140 expecting the MS standard format may become confused; @file{PEview} is
141 one known example.
142
143 The functionality is supported in BFD by code implemented under
144 the control of the macro @code{COFF_LONG_SECTION_NAMES}. If not
145 defined, the format does not support long section names in any way.
146 If defined, it is used to initialise a flag,
147 @code{_bfd_coff_long_section_names}, and a hook function pointer,
148 @code{_bfd_coff_set_long_section_names}, in the Coff backend data
149 structure. The flag controls the generation of long section names
150 in output BFDs at runtime; if it is false, as it will be by default
151 when generating an executable image, long section names are truncated;
152 if true, the long section names extension is employed. The hook
153 points to a function that allows the value of the flag to be altered
154 at runtime, on formats that support long section names at all; on
155 other formats it points to a stub that returns an error indication.
156
157 With input BFDs, the flag is set according to whether any long section
158 names are detected while reading the section headers. For a completely
159 new BFD, the flag is set to the default for the target format. This
160 information can be used by a client of the BFD library when deciding
161 what output format to generate, and means that a BFD that is opened
162 for read and subsequently converted to a writeable BFD and modified
163 in-place will retain whatever format it had on input.
164
165 If @code{COFF_LONG_SECTION_NAMES} is simply defined (blank), or is
166 defined to the value "1", then long section names are enabled by
167 default; if it is defined to the value zero, they are disabled by
168 default (but still accepted in input BFDs). The header @file{coffcode.h}
169 defines a macro, @code{COFF_DEFAULT_LONG_SECTION_NAMES}, which is
170 used in the backends to initialise the backend data structure fields
171 appropriately; see the comments for further detail.
172
173 SUBSUBSECTION
174 Bit twiddling
175
176 Each flavour of coff supported in BFD has its own header file
177 describing the external layout of the structures. There is also
178 an internal description of the coff layout, in
179 @file{coff/internal.h}. A major function of the
180 coff backend is swapping the bytes and twiddling the bits to
181 translate the external form of the structures into the normal
182 internal form. This is all performed in the
183 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
184 elements are different sizes between different versions of
185 coff; it is the duty of the coff version specific include file
186 to override the definitions of various packing routines in
187 @file{coffcode.h}. E.g., the size of line number entry in coff is
188 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
189 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
190 correct one. No doubt, some day someone will find a version of
191 coff which has a varying field size not catered to at the
192 moment. To port BFD, that person will have to add more @code{#defines}.
193 Three of the bit twiddling routines are exported to
194 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
195 and @code{coff_swap_lineno_in}. @code{GDB} reads the symbol
196 table on its own, but uses BFD to fix things up. More of the
197 bit twiddlers are exported for @code{gas};
198 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
199 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
200 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
201 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
202 of all the symbol table and reloc drudgery itself, thereby
203 saving the internal BFD overhead, but uses BFD to swap things
204 on the way out, making cross ports much safer. Doing so also
205 allows BFD (and thus the linker) to use the same header files
206 as @code{gas}, which makes one avenue to disaster disappear.
207
208 SUBSUBSECTION
209 Symbol reading
210
211 The simple canonical form for symbols used by BFD is not rich
212 enough to keep all the information available in a coff symbol
213 table. The back end gets around this problem by keeping the original
214 symbol table around, "behind the scenes".
215
216 When a symbol table is requested (through a call to
217 @code{bfd_canonicalize_symtab}), a request gets through to
218 @code{coff_get_normalized_symtab}. This reads the symbol table from
219 the coff file and swaps all the structures inside into the
220 internal form. It also fixes up all the pointers in the table
221 (represented in the file by offsets from the first symbol in
222 the table) into physical pointers to elements in the new
223 internal table. This involves some work since the meanings of
224 fields change depending upon context: a field that is a
225 pointer to another structure in the symbol table at one moment
226 may be the size in bytes of a structure at the next. Another
227 pass is made over the table. All symbols which mark file names
228 (<<C_FILE>> symbols) are modified so that the internal
229 string points to the value in the auxent (the real filename)
230 rather than the normal text associated with the symbol
231 (@code{".file"}).
232
233 At this time the symbol names are moved around. Coff stores
234 all symbols less than nine characters long physically
235 within the symbol table; longer strings are kept at the end of
236 the file in the string table. This pass moves all strings
237 into memory and replaces them with pointers to the strings.
238
239 The symbol table is massaged once again, this time to create
240 the canonical table used by the BFD application. Each symbol
241 is inspected in turn, and a decision made (using the
242 @code{sclass} field) about the various flags to set in the
243 @code{asymbol}. @xref{Symbols}. The generated canonical table
244 shares strings with the hidden internal symbol table.
245
246 Any linenumbers are read from the coff file too, and attached
247 to the symbols which own the functions the linenumbers belong to.
248
249 SUBSUBSECTION
250 Symbol writing
251
252 Writing a symbol to a coff file which didn't come from a coff
253 file will lose any debugging information. The @code{asymbol}
254 structure remembers the BFD from which the symbol was taken, and on
255 output the back end makes sure that the same destination target as
256 source target is present.
257
258 When the symbols have come from a coff file then all the
259 debugging information is preserved.
260
261 Symbol tables are provided for writing to the back end in a
262 vector of pointers to pointers. This allows applications like
263 the linker to accumulate and output large symbol tables
264 without having to do too much byte copying.
265
266 This function runs through the provided symbol table and
267 patches each symbol marked as a file place holder
268 (@code{C_FILE}) to point to the next file place holder in the
269 list. It also marks each @code{offset} field in the list with
270 the offset from the first symbol of the current symbol.
271
272 Another function of this procedure is to turn the canonical
273 value form of BFD into the form used by coff. Internally, BFD
274 expects symbol values to be offsets from a section base; so a
275 symbol physically at 0x120, but in a section starting at
276 0x100, would have the value 0x20. Coff expects symbols to
277 contain their final value, so symbols have their values
278 changed at this point to reflect their sum with their owning
279 section. This transformation uses the
280 <<output_section>> field of the @code{asymbol}'s
281 @code{asection} @xref{Sections}.
282
283 o <<coff_mangle_symbols>>
284
285 This routine runs though the provided symbol table and uses
286 the offsets generated by the previous pass and the pointers
287 generated when the symbol table was read in to create the
288 structured hierarchy required by coff. It changes each pointer
289 to a symbol into the index into the symbol table of the asymbol.
290
291 o <<coff_write_symbols>>
292
293 This routine runs through the symbol table and patches up the
294 symbols from their internal form into the coff way, calls the
295 bit twiddlers, and writes out the table to the file.
296
297 */
298
299 /*
300 INTERNAL_DEFINITION
301 coff_symbol_type
302
303 DESCRIPTION
304 The hidden information for an <<asymbol>> is described in a
305 <<combined_entry_type>>:
306
307 CODE_FRAGMENT
308 .
309 .typedef struct coff_ptr_struct
310 .{
311 . {* Remembers the offset from the first symbol in the file for
312 . this symbol. Generated by coff_renumber_symbols. *}
313 . unsigned int offset;
314 .
315 . {* Should the value of this symbol be renumbered. Used for
316 . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
317 . unsigned int fix_value : 1;
318 .
319 . {* Should the tag field of this symbol be renumbered.
320 . Created by coff_pointerize_aux. *}
321 . unsigned int fix_tag : 1;
322 .
323 . {* Should the endidx field of this symbol be renumbered.
324 . Created by coff_pointerize_aux. *}
325 . unsigned int fix_end : 1;
326 .
327 . {* Should the x_csect.x_scnlen field be renumbered.
328 . Created by coff_pointerize_aux. *}
329 . unsigned int fix_scnlen : 1;
330 .
331 . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
332 . index into the line number entries. Set by coff_slurp_symbol_table. *}
333 . unsigned int fix_line : 1;
334 .
335 . {* The container for the symbol structure as read and translated
336 . from the file. *}
337 . union
338 . {
339 . union internal_auxent auxent;
340 . struct internal_syment syment;
341 . } u;
342 .} combined_entry_type;
343 .
344 .
345 .{* Each canonical asymbol really looks like this: *}
346 .
347 .typedef struct coff_symbol_struct
348 .{
349 . {* The actual symbol which the rest of BFD works with *}
350 . asymbol symbol;
351 .
352 . {* A pointer to the hidden information for this symbol *}
353 . combined_entry_type *native;
354 .
355 . {* A pointer to the linenumber information for this symbol *}
356 . struct lineno_cache_entry *lineno;
357 .
358 . {* Have the line numbers been relocated yet ? *}
359 . bfd_boolean done_lineno;
360 .} coff_symbol_type;
361
362 */
363
364 #include "libiberty.h"
365
366 #ifdef COFF_WITH_PE
367 #include "peicode.h"
368 #else
369 #include "coffswap.h"
370 #endif
371
372 #define STRING_SIZE_SIZE 4
373
374 #define DOT_DEBUG ".debug"
375 #define DOT_ZDEBUG ".zdebug"
376 #define GNU_LINKONCE_WI ".gnu.linkonce.wi."
377 #define GNU_LINKONCE_WT ".gnu.linkonce.wt."
378 #define DOT_RELOC ".reloc"
379
380 #if defined (COFF_LONG_SECTION_NAMES)
381 /* Needed to expand the inputs to BLANKOR1TOODD. */
382 #define COFFLONGSECTIONCATHELPER(x,y) x ## y
383 /* If the input macro Y is blank or '1', return an odd number; if it is
384 '0', return an even number. Result undefined in all other cases. */
385 #define BLANKOR1TOODD(y) COFFLONGSECTIONCATHELPER(1,y)
386 /* Defined to numerical 0 or 1 according to whether generation of long
387 section names is disabled or enabled by default. */
388 #define COFF_ENABLE_LONG_SECTION_NAMES (BLANKOR1TOODD(COFF_LONG_SECTION_NAMES) & 1)
389 /* Where long section names are supported, we allow them to be enabled
390 and disabled at runtime, so select an appropriate hook function for
391 _bfd_coff_set_long_section_names. */
392 #define COFF_LONG_SECTION_NAMES_SETTER bfd_coff_set_long_section_names_allowed
393 #else /* !defined (COFF_LONG_SECTION_NAMES) */
394 /* If long section names are not supported, this stub disallows any
395 attempt to enable them at run-time. */
396 #define COFF_LONG_SECTION_NAMES_SETTER bfd_coff_set_long_section_names_disallowed
397 #endif /* defined (COFF_LONG_SECTION_NAMES) */
398
399 /* Define a macro that can be used to initialise both the fields relating
400 to long section names in the backend data struct simultaneously. */
401 #if COFF_ENABLE_LONG_SECTION_NAMES
402 #define COFF_DEFAULT_LONG_SECTION_NAMES (TRUE), COFF_LONG_SECTION_NAMES_SETTER
403 #else /* !COFF_ENABLE_LONG_SECTION_NAMES */
404 #define COFF_DEFAULT_LONG_SECTION_NAMES (FALSE), COFF_LONG_SECTION_NAMES_SETTER
405 #endif /* COFF_ENABLE_LONG_SECTION_NAMES */
406
407 #if defined (COFF_LONG_SECTION_NAMES)
408 static bfd_boolean bfd_coff_set_long_section_names_allowed
409 (bfd *, int);
410 #else /* !defined (COFF_LONG_SECTION_NAMES) */
411 static bfd_boolean bfd_coff_set_long_section_names_disallowed
412 (bfd *, int);
413 #endif /* defined (COFF_LONG_SECTION_NAMES) */
414 static long sec_to_styp_flags
415 (const char *, flagword);
416 static bfd_boolean styp_to_sec_flags
417 (bfd *, void *, const char *, asection *, flagword *);
418 static bfd_boolean coff_bad_format_hook
419 (bfd *, void *);
420 static void coff_set_custom_section_alignment
421 (bfd *, asection *, const struct coff_section_alignment_entry *,
422 const unsigned int);
423 static bfd_boolean coff_new_section_hook
424 (bfd *, asection *);
425 static bfd_boolean coff_set_arch_mach_hook
426 (bfd *, void *);
427 static bfd_boolean coff_write_relocs
428 (bfd *, int);
429 static bfd_boolean coff_set_flags
430 (bfd *, unsigned int *, unsigned short *);
431 static bfd_boolean coff_set_arch_mach
432 (bfd *, enum bfd_architecture, unsigned long) ATTRIBUTE_UNUSED;
433 static bfd_boolean coff_compute_section_file_positions
434 (bfd *);
435 static bfd_boolean coff_write_object_contents
436 (bfd *) ATTRIBUTE_UNUSED;
437 static bfd_boolean coff_set_section_contents
438 (bfd *, asection *, const void *, file_ptr, bfd_size_type);
439 static void * buy_and_read
440 (bfd *, file_ptr, bfd_size_type);
441 static bfd_boolean coff_slurp_line_table
442 (bfd *, asection *);
443 static bfd_boolean coff_slurp_symbol_table
444 (bfd *);
445 static enum coff_symbol_classification coff_classify_symbol
446 (bfd *, struct internal_syment *);
447 static bfd_boolean coff_slurp_reloc_table
448 (bfd *, asection *, asymbol **);
449 static long coff_canonicalize_reloc
450 (bfd *, asection *, arelent **, asymbol **);
451 #ifndef coff_mkobject_hook
452 static void * coff_mkobject_hook
453 (bfd *, void *, void *);
454 #endif
455 #ifdef COFF_WITH_PE
456 static flagword handle_COMDAT
457 (bfd *, flagword, void *, const char *, asection *);
458 #endif
459 #ifdef COFF_IMAGE_WITH_PE
460 static bfd_boolean coff_read_word
461 (bfd *, unsigned int *);
462 static unsigned int coff_compute_checksum
463 (bfd *);
464 static bfd_boolean coff_apply_checksum
465 (bfd *);
466 #endif
467 #ifdef TICOFF
468 static bfd_boolean ticoff0_bad_format_hook
469 (bfd *, void * );
470 static bfd_boolean ticoff1_bad_format_hook
471 (bfd *, void * );
472 #endif
473 \f
474 /* void warning(); */
475
476 #if defined (COFF_LONG_SECTION_NAMES)
477 static bfd_boolean
478 bfd_coff_set_long_section_names_allowed (bfd *abfd, int enable)
479 {
480 coff_backend_info (abfd)->_bfd_coff_long_section_names = enable;
481 return TRUE;
482 }
483 #else /* !defined (COFF_LONG_SECTION_NAMES) */
484 static bfd_boolean
485 bfd_coff_set_long_section_names_disallowed (bfd *abfd, int enable)
486 {
487 (void) abfd;
488 (void) enable;
489 return FALSE;
490 }
491 #endif /* defined (COFF_LONG_SECTION_NAMES) */
492
493 /* Return a word with STYP_* (scnhdr.s_flags) flags set to represent
494 the incoming SEC_* flags. The inverse of this function is
495 styp_to_sec_flags(). NOTE: If you add to/change this routine, you
496 should probably mirror the changes in styp_to_sec_flags(). */
497
498 #ifndef COFF_WITH_PE
499
500 /* Macros for setting debugging flags. */
501
502 #ifdef STYP_DEBUG
503 #define STYP_XCOFF_DEBUG STYP_DEBUG
504 #else
505 #define STYP_XCOFF_DEBUG STYP_INFO
506 #endif
507
508 #ifdef COFF_ALIGN_IN_S_FLAGS
509 #define STYP_DEBUG_INFO STYP_DSECT
510 #else
511 #define STYP_DEBUG_INFO STYP_INFO
512 #endif
513
514 static long
515 sec_to_styp_flags (const char *sec_name, flagword sec_flags)
516 {
517 long styp_flags = 0;
518
519 if (!strcmp (sec_name, _TEXT))
520 {
521 styp_flags = STYP_TEXT;
522 }
523 else if (!strcmp (sec_name, _DATA))
524 {
525 styp_flags = STYP_DATA;
526 }
527 else if (!strcmp (sec_name, _BSS))
528 {
529 styp_flags = STYP_BSS;
530 #ifdef _COMMENT
531 }
532 else if (!strcmp (sec_name, _COMMENT))
533 {
534 styp_flags = STYP_INFO;
535 #endif /* _COMMENT */
536 #ifdef _LIB
537 }
538 else if (!strcmp (sec_name, _LIB))
539 {
540 styp_flags = STYP_LIB;
541 #endif /* _LIB */
542 #ifdef _LIT
543 }
544 else if (!strcmp (sec_name, _LIT))
545 {
546 styp_flags = STYP_LIT;
547 #endif /* _LIT */
548 }
549 else if (CONST_STRNEQ (sec_name, DOT_DEBUG)
550 || CONST_STRNEQ (sec_name, DOT_ZDEBUG))
551 {
552 /* Handle the XCOFF debug section and DWARF2 debug sections. */
553 if (!sec_name[6])
554 styp_flags = STYP_XCOFF_DEBUG;
555 else
556 styp_flags = STYP_DEBUG_INFO;
557 }
558 else if (CONST_STRNEQ (sec_name, ".stab"))
559 {
560 styp_flags = STYP_DEBUG_INFO;
561 }
562 #ifdef COFF_LONG_SECTION_NAMES
563 else if (CONST_STRNEQ (sec_name, GNU_LINKONCE_WI)
564 || CONST_STRNEQ (sec_name, GNU_LINKONCE_WT))
565 {
566 styp_flags = STYP_DEBUG_INFO;
567 }
568 #endif
569 #ifdef RS6000COFF_C
570 else if (!strcmp (sec_name, _PAD))
571 {
572 styp_flags = STYP_PAD;
573 }
574 else if (!strcmp (sec_name, _LOADER))
575 {
576 styp_flags = STYP_LOADER;
577 }
578 else if (!strcmp (sec_name, _EXCEPT))
579 {
580 styp_flags = STYP_EXCEPT;
581 }
582 else if (!strcmp (sec_name, _TYPCHK))
583 {
584 styp_flags = STYP_TYPCHK;
585 }
586 else if (sec_flags & SEC_DEBUGGING)
587 {
588 int i;
589
590 for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++)
591 if (!strcmp (sec_name, xcoff_dwsect_names[i].name))
592 {
593 styp_flags = STYP_DWARF | xcoff_dwsect_names[i].flag;
594 break;
595 }
596 }
597 #endif
598 /* Try and figure out what it should be */
599 else if (sec_flags & SEC_CODE)
600 {
601 styp_flags = STYP_TEXT;
602 }
603 else if (sec_flags & SEC_DATA)
604 {
605 styp_flags = STYP_DATA;
606 }
607 else if (sec_flags & SEC_READONLY)
608 {
609 #ifdef STYP_LIT /* 29k readonly text/data section */
610 styp_flags = STYP_LIT;
611 #else
612 styp_flags = STYP_TEXT;
613 #endif /* STYP_LIT */
614 }
615 else if (sec_flags & SEC_LOAD)
616 {
617 styp_flags = STYP_TEXT;
618 }
619 else if (sec_flags & SEC_ALLOC)
620 {
621 styp_flags = STYP_BSS;
622 }
623
624 #ifdef STYP_CLINK
625 if (sec_flags & SEC_TIC54X_CLINK)
626 styp_flags |= STYP_CLINK;
627 #endif
628
629 #ifdef STYP_BLOCK
630 if (sec_flags & SEC_TIC54X_BLOCK)
631 styp_flags |= STYP_BLOCK;
632 #endif
633
634 #ifdef STYP_NOLOAD
635 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
636 styp_flags |= STYP_NOLOAD;
637 #endif
638
639 return styp_flags;
640 }
641
642 #else /* COFF_WITH_PE */
643
644 /* The PE version; see above for the general comments. The non-PE
645 case seems to be more guessing, and breaks PE format; specifically,
646 .rdata is readonly, but it sure ain't text. Really, all this
647 should be set up properly in gas (or whatever assembler is in use),
648 and honor whatever objcopy/strip, etc. sent us as input. */
649
650 static long
651 sec_to_styp_flags (const char *sec_name, flagword sec_flags)
652 {
653 long styp_flags = 0;
654 bfd_boolean is_dbg = FALSE;
655
656 if (CONST_STRNEQ (sec_name, DOT_DEBUG)
657 || CONST_STRNEQ (sec_name, DOT_ZDEBUG)
658 #ifdef COFF_LONG_SECTION_NAMES
659 || CONST_STRNEQ (sec_name, GNU_LINKONCE_WI)
660 || CONST_STRNEQ (sec_name, GNU_LINKONCE_WT)
661 #endif
662 || CONST_STRNEQ (sec_name, ".stab"))
663 is_dbg = TRUE;
664
665 /* caution: there are at least three groups of symbols that have
666 very similar bits and meanings: IMAGE_SCN*, SEC_*, and STYP_*.
667 SEC_* are the BFD internal flags, used for generic BFD
668 information. STYP_* are the COFF section flags which appear in
669 COFF files. IMAGE_SCN_* are the PE section flags which appear in
670 PE files. The STYP_* flags and the IMAGE_SCN_* flags overlap,
671 but there are more IMAGE_SCN_* flags. */
672
673 /* FIXME: There is no gas syntax to specify the debug section flag. */
674 if (is_dbg)
675 {
676 sec_flags &= (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD
677 | SEC_LINK_DUPLICATES_SAME_CONTENTS
678 | SEC_LINK_DUPLICATES_SAME_SIZE);
679 sec_flags |= SEC_DEBUGGING | SEC_READONLY;
680 }
681
682 /* skip LOAD */
683 /* READONLY later */
684 /* skip RELOC */
685 if ((sec_flags & SEC_CODE) != 0)
686 styp_flags |= IMAGE_SCN_CNT_CODE;
687 if ((sec_flags & (SEC_DATA | SEC_DEBUGGING)) != 0)
688 styp_flags |= IMAGE_SCN_CNT_INITIALIZED_DATA;
689 if ((sec_flags & SEC_ALLOC) != 0 && (sec_flags & SEC_LOAD) == 0)
690 styp_flags |= IMAGE_SCN_CNT_UNINITIALIZED_DATA; /* ==STYP_BSS */
691 /* skip ROM */
692 /* skip constRUCTOR */
693 /* skip CONTENTS */
694 if ((sec_flags & SEC_IS_COMMON) != 0)
695 styp_flags |= IMAGE_SCN_LNK_COMDAT;
696 if ((sec_flags & SEC_DEBUGGING) != 0)
697 styp_flags |= IMAGE_SCN_MEM_DISCARDABLE;
698 if ((sec_flags & SEC_EXCLUDE) != 0 && !is_dbg)
699 styp_flags |= IMAGE_SCN_LNK_REMOVE;
700 if ((sec_flags & SEC_NEVER_LOAD) != 0 && !is_dbg)
701 styp_flags |= IMAGE_SCN_LNK_REMOVE;
702 /* skip IN_MEMORY */
703 /* skip SORT */
704 if (sec_flags & SEC_LINK_ONCE)
705 styp_flags |= IMAGE_SCN_LNK_COMDAT;
706 if ((sec_flags
707 & (SEC_LINK_DUPLICATES_DISCARD | SEC_LINK_DUPLICATES_SAME_CONTENTS
708 | SEC_LINK_DUPLICATES_SAME_SIZE)) != 0)
709 styp_flags |= IMAGE_SCN_LNK_COMDAT;
710
711 /* skip LINKER_CREATED */
712
713 if ((sec_flags & SEC_COFF_NOREAD) == 0)
714 styp_flags |= IMAGE_SCN_MEM_READ; /* Invert NOREAD for read. */
715 if ((sec_flags & SEC_READONLY) == 0)
716 styp_flags |= IMAGE_SCN_MEM_WRITE; /* Invert READONLY for write. */
717 if (sec_flags & SEC_CODE)
718 styp_flags |= IMAGE_SCN_MEM_EXECUTE; /* CODE->EXECUTE. */
719 if (sec_flags & SEC_COFF_SHARED)
720 styp_flags |= IMAGE_SCN_MEM_SHARED; /* Shared remains meaningful. */
721
722 return styp_flags;
723 }
724
725 #endif /* COFF_WITH_PE */
726
727 /* Return a word with SEC_* flags set to represent the incoming STYP_*
728 flags (from scnhdr.s_flags). The inverse of this function is
729 sec_to_styp_flags(). NOTE: If you add to/change this routine, you
730 should probably mirror the changes in sec_to_styp_flags(). */
731
732 #ifndef COFF_WITH_PE
733
734 static bfd_boolean
735 styp_to_sec_flags (bfd *abfd ATTRIBUTE_UNUSED,
736 void * hdr,
737 const char *name,
738 asection *section ATTRIBUTE_UNUSED,
739 flagword *flags_ptr)
740 {
741 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
742 long styp_flags = internal_s->s_flags;
743 flagword sec_flags = 0;
744
745 #ifdef STYP_BLOCK
746 if (styp_flags & STYP_BLOCK)
747 sec_flags |= SEC_TIC54X_BLOCK;
748 #endif
749
750 #ifdef STYP_CLINK
751 if (styp_flags & STYP_CLINK)
752 sec_flags |= SEC_TIC54X_CLINK;
753 #endif
754
755 #ifdef STYP_NOLOAD
756 if (styp_flags & STYP_NOLOAD)
757 sec_flags |= SEC_NEVER_LOAD;
758 #endif /* STYP_NOLOAD */
759
760 /* For 386 COFF, at least, an unloadable text or data section is
761 actually a shared library section. */
762 if (styp_flags & STYP_TEXT)
763 {
764 if (sec_flags & SEC_NEVER_LOAD)
765 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
766 else
767 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
768 }
769 else if (styp_flags & STYP_DATA)
770 {
771 if (sec_flags & SEC_NEVER_LOAD)
772 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
773 else
774 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
775 }
776 else if (styp_flags & STYP_BSS)
777 {
778 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
779 if (sec_flags & SEC_NEVER_LOAD)
780 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
781 else
782 #endif
783 sec_flags |= SEC_ALLOC;
784 }
785 else if (styp_flags & STYP_INFO)
786 {
787 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
788 defined. coff_compute_section_file_positions uses
789 COFF_PAGE_SIZE to ensure that the low order bits of the
790 section VMA and the file offset match. If we don't know
791 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
792 and demand page loading of the file will fail. */
793 #if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS)
794 sec_flags |= SEC_DEBUGGING;
795 #endif
796 }
797 else if (styp_flags & STYP_PAD)
798 sec_flags = 0;
799 #ifdef RS6000COFF_C
800 else if (styp_flags & STYP_DWARF)
801 sec_flags |= SEC_DEBUGGING;
802 #endif
803 else if (strcmp (name, _TEXT) == 0)
804 {
805 if (sec_flags & SEC_NEVER_LOAD)
806 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
807 else
808 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
809 }
810 else if (strcmp (name, _DATA) == 0)
811 {
812 if (sec_flags & SEC_NEVER_LOAD)
813 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
814 else
815 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
816 }
817 else if (strcmp (name, _BSS) == 0)
818 {
819 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
820 if (sec_flags & SEC_NEVER_LOAD)
821 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
822 else
823 #endif
824 sec_flags |= SEC_ALLOC;
825 }
826 else if (CONST_STRNEQ (name, DOT_DEBUG)
827 || CONST_STRNEQ (name, DOT_ZDEBUG)
828 #ifdef _COMMENT
829 || strcmp (name, _COMMENT) == 0
830 #endif
831 #ifdef COFF_LONG_SECTION_NAMES
832 || CONST_STRNEQ (name, GNU_LINKONCE_WI)
833 || CONST_STRNEQ (name, GNU_LINKONCE_WT)
834 #endif
835 || CONST_STRNEQ (name, ".stab"))
836 {
837 #ifdef COFF_PAGE_SIZE
838 sec_flags |= SEC_DEBUGGING;
839 #endif
840 }
841 #ifdef _LIB
842 else if (strcmp (name, _LIB) == 0)
843 ;
844 #endif
845 #ifdef _LIT
846 else if (strcmp (name, _LIT) == 0)
847 sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY;
848 #endif
849 else
850 sec_flags |= SEC_ALLOC | SEC_LOAD;
851
852 #ifdef STYP_LIT /* A29k readonly text/data section type. */
853 if ((styp_flags & STYP_LIT) == STYP_LIT)
854 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
855 #endif /* STYP_LIT */
856
857 #ifdef STYP_OTHER_LOAD /* Other loaded sections. */
858 if (styp_flags & STYP_OTHER_LOAD)
859 sec_flags = (SEC_LOAD | SEC_ALLOC);
860 #endif /* STYP_SDATA */
861
862 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
863 /* As a GNU extension, if the name begins with .gnu.linkonce, we
864 only link a single copy of the section. This is used to support
865 g++. g++ will emit each template expansion in its own section.
866 The symbols will be defined as weak, so that multiple definitions
867 are permitted. The GNU linker extension is to actually discard
868 all but one of the sections. */
869 if (CONST_STRNEQ (name, ".gnu.linkonce"))
870 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
871 #endif
872
873 if (flags_ptr == NULL)
874 return FALSE;
875
876 * flags_ptr = sec_flags;
877 return TRUE;
878 }
879
880 #else /* COFF_WITH_PE */
881
882 static flagword
883 handle_COMDAT (bfd * abfd,
884 flagword sec_flags,
885 void * hdr,
886 const char *name,
887 asection *section)
888 {
889 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
890 bfd_byte *esymstart, *esym, *esymend;
891 int seen_state = 0;
892 char *target_name = NULL;
893
894 sec_flags |= SEC_LINK_ONCE;
895
896 /* Unfortunately, the PE format stores essential information in
897 the symbol table, of all places. We need to extract that
898 information now, so that objdump and the linker will know how
899 to handle the section without worrying about the symbols. We
900 can't call slurp_symtab, because the linker doesn't want the
901 swapped symbols. */
902
903 /* COMDAT sections are special. The first symbol is the section
904 symbol, which tells what kind of COMDAT section it is. The
905 second symbol is the "comdat symbol" - the one with the
906 unique name. GNU uses the section symbol for the unique
907 name; MS uses ".text" for every comdat section. Sigh. - DJ */
908
909 /* This is not mirrored in sec_to_styp_flags(), but there
910 doesn't seem to be a need to, either, and it would at best be
911 rather messy. */
912
913 if (! _bfd_coff_get_external_symbols (abfd))
914 return sec_flags;
915
916 esymstart = esym = (bfd_byte *) obj_coff_external_syms (abfd);
917 esymend = esym + obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd);
918
919 while (esym < esymend)
920 {
921 struct internal_syment isym;
922 char buf[SYMNMLEN + 1];
923 const char *symname;
924
925 bfd_coff_swap_sym_in (abfd, esym, & isym);
926
927 if (sizeof (internal_s->s_name) > SYMNMLEN)
928 {
929 /* This case implies that the matching
930 symbol name will be in the string table. */
931 abort ();
932 }
933
934 if (isym.n_scnum == section->target_index)
935 {
936 /* According to the MSVC documentation, the first
937 TWO entries with the section # are both of
938 interest to us. The first one is the "section
939 symbol" (section name). The second is the comdat
940 symbol name. Here, we've found the first
941 qualifying entry; we distinguish it from the
942 second with a state flag.
943
944 In the case of gas-generated (at least until that
945 is fixed) .o files, it isn't necessarily the
946 second one. It may be some other later symbol.
947
948 Since gas also doesn't follow MS conventions and
949 emits the section similar to .text$<name>, where
950 <something> is the name we're looking for, we
951 distinguish the two as follows:
952
953 If the section name is simply a section name (no
954 $) we presume it's MS-generated, and look at
955 precisely the second symbol for the comdat name.
956 If the section name has a $, we assume it's
957 gas-generated, and look for <something> (whatever
958 follows the $) as the comdat symbol. */
959
960 /* All 3 branches use this. */
961 symname = _bfd_coff_internal_syment_name (abfd, &isym, buf);
962
963 if (symname == NULL)
964 abort ();
965
966 switch (seen_state)
967 {
968 case 0:
969 {
970 /* The first time we've seen the symbol. */
971 union internal_auxent aux;
972
973 /* If it isn't the stuff we're expecting, die;
974 The MS documentation is vague, but it
975 appears that the second entry serves BOTH
976 as the comdat symbol and the defining
977 symbol record (either C_STAT or C_EXT,
978 possibly with an aux entry with debug
979 information if it's a function.) It
980 appears the only way to find the second one
981 is to count. (On Intel, they appear to be
982 adjacent, but on Alpha, they have been
983 found separated.)
984
985 Here, we think we've found the first one,
986 but there's some checking we can do to be
987 sure. */
988
989 if (! ((isym.n_sclass == C_STAT
990 || isym.n_sclass == C_EXT)
991 && BTYPE (isym.n_type) == T_NULL
992 && isym.n_value == 0))
993 abort ();
994
995 /* FIXME LATER: MSVC generates section names
996 like .text for comdats. Gas generates
997 names like .text$foo__Fv (in the case of a
998 function). See comment above for more. */
999
1000 if (isym.n_sclass == C_STAT && strcmp (name, symname) != 0)
1001 _bfd_error_handler (_("%B: warning: COMDAT symbol '%s' does not match section name '%s'"),
1002 abfd, symname, name);
1003
1004 seen_state = 1;
1005
1006 /* This is the section symbol. */
1007 bfd_coff_swap_aux_in (abfd, (esym + bfd_coff_symesz (abfd)),
1008 isym.n_type, isym.n_sclass,
1009 0, isym.n_numaux, & aux);
1010
1011 target_name = strchr (name, '$');
1012 if (target_name != NULL)
1013 {
1014 /* Gas mode. */
1015 seen_state = 2;
1016 /* Skip the `$'. */
1017 target_name += 1;
1018 }
1019
1020 /* FIXME: Microsoft uses NODUPLICATES and
1021 ASSOCIATIVE, but gnu uses ANY and
1022 SAME_SIZE. Unfortunately, gnu doesn't do
1023 the comdat symbols right. So, until we can
1024 fix it to do the right thing, we are
1025 temporarily disabling comdats for the MS
1026 types (they're used in DLLs and C++, but we
1027 don't support *their* C++ libraries anyway
1028 - DJ. */
1029
1030 /* Cygwin does not follow the MS style, and
1031 uses ANY and SAME_SIZE where NODUPLICATES
1032 and ASSOCIATIVE should be used. For
1033 Interix, we just do the right thing up
1034 front. */
1035
1036 switch (aux.x_scn.x_comdat)
1037 {
1038 case IMAGE_COMDAT_SELECT_NODUPLICATES:
1039 #ifdef STRICT_PE_FORMAT
1040 sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
1041 #else
1042 sec_flags &= ~SEC_LINK_ONCE;
1043 #endif
1044 break;
1045
1046 case IMAGE_COMDAT_SELECT_ANY:
1047 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
1048 break;
1049
1050 case IMAGE_COMDAT_SELECT_SAME_SIZE:
1051 sec_flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
1052 break;
1053
1054 case IMAGE_COMDAT_SELECT_EXACT_MATCH:
1055 /* Not yet fully implemented ??? */
1056 sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
1057 break;
1058
1059 /* debug$S gets this case; other
1060 implications ??? */
1061
1062 /* There may be no symbol... we'll search
1063 the whole table... Is this the right
1064 place to play this game? Or should we do
1065 it when reading it in. */
1066 case IMAGE_COMDAT_SELECT_ASSOCIATIVE:
1067 #ifdef STRICT_PE_FORMAT
1068 /* FIXME: This is not currently implemented. */
1069 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
1070 #else
1071 sec_flags &= ~SEC_LINK_ONCE;
1072 #endif
1073 break;
1074
1075 default: /* 0 means "no symbol" */
1076 /* debug$F gets this case; other
1077 implications ??? */
1078 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
1079 break;
1080 }
1081 }
1082 break;
1083
1084 case 2:
1085 /* Gas mode: the first matching on partial name. */
1086
1087 #ifndef TARGET_UNDERSCORE
1088 #define TARGET_UNDERSCORE 0
1089 #endif
1090 /* Is this the name we're looking for ? */
1091 if (strcmp (target_name,
1092 symname + (TARGET_UNDERSCORE ? 1 : 0)) != 0)
1093 {
1094 /* Not the name we're looking for */
1095 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
1096 continue;
1097 }
1098 /* Fall through. */
1099 case 1:
1100 /* MSVC mode: the lexically second symbol (or
1101 drop through from the above). */
1102 {
1103 char *newname;
1104 bfd_size_type amt;
1105
1106 /* This must the second symbol with the
1107 section #. It is the actual symbol name.
1108 Intel puts the two adjacent, but Alpha (at
1109 least) spreads them out. */
1110
1111 amt = sizeof (struct coff_comdat_info);
1112 coff_section_data (abfd, section)->comdat
1113 = (struct coff_comdat_info *) bfd_alloc (abfd, amt);
1114 if (coff_section_data (abfd, section)->comdat == NULL)
1115 abort ();
1116
1117 coff_section_data (abfd, section)->comdat->symbol =
1118 (esym - esymstart) / bfd_coff_symesz (abfd);
1119
1120 amt = strlen (symname) + 1;
1121 newname = (char *) bfd_alloc (abfd, amt);
1122 if (newname == NULL)
1123 abort ();
1124
1125 strcpy (newname, symname);
1126 coff_section_data (abfd, section)->comdat->name
1127 = newname;
1128 }
1129
1130 goto breakloop;
1131 }
1132 }
1133
1134 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
1135 }
1136
1137 breakloop:
1138 return sec_flags;
1139 }
1140
1141
1142 /* The PE version; see above for the general comments.
1143
1144 Since to set the SEC_LINK_ONCE and associated flags, we have to
1145 look at the symbol table anyway, we return the symbol table index
1146 of the symbol being used as the COMDAT symbol. This is admittedly
1147 ugly, but there's really nowhere else that we have access to the
1148 required information. FIXME: Is the COMDAT symbol index used for
1149 any purpose other than objdump? */
1150
1151 static bfd_boolean
1152 styp_to_sec_flags (bfd *abfd,
1153 void * hdr,
1154 const char *name,
1155 asection *section,
1156 flagword *flags_ptr)
1157 {
1158 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
1159 long styp_flags = internal_s->s_flags;
1160 flagword sec_flags;
1161 bfd_boolean result = TRUE;
1162 bfd_boolean is_dbg = FALSE;
1163
1164 if (CONST_STRNEQ (name, DOT_DEBUG)
1165 || CONST_STRNEQ (name, DOT_ZDEBUG)
1166 #ifdef COFF_LONG_SECTION_NAMES
1167 || CONST_STRNEQ (name, GNU_LINKONCE_WI)
1168 || CONST_STRNEQ (name, GNU_LINKONCE_WT)
1169 #endif
1170 || CONST_STRNEQ (name, ".stab"))
1171 is_dbg = TRUE;
1172 /* Assume read only unless IMAGE_SCN_MEM_WRITE is specified. */
1173 sec_flags = SEC_READONLY;
1174
1175 /* If section disallows read, then set the NOREAD flag. */
1176 if ((styp_flags & IMAGE_SCN_MEM_READ) == 0)
1177 sec_flags |= SEC_COFF_NOREAD;
1178
1179 /* Process each flag bit in styp_flags in turn. */
1180 while (styp_flags)
1181 {
1182 long flag = styp_flags & - styp_flags;
1183 char * unhandled = NULL;
1184
1185 styp_flags &= ~ flag;
1186
1187 /* We infer from the distinct read/write/execute bits the settings
1188 of some of the bfd flags; the actual values, should we need them,
1189 are also in pei_section_data (abfd, section)->pe_flags. */
1190
1191 switch (flag)
1192 {
1193 case STYP_DSECT:
1194 unhandled = "STYP_DSECT";
1195 break;
1196 case STYP_GROUP:
1197 unhandled = "STYP_GROUP";
1198 break;
1199 case STYP_COPY:
1200 unhandled = "STYP_COPY";
1201 break;
1202 case STYP_OVER:
1203 unhandled = "STYP_OVER";
1204 break;
1205 #ifdef SEC_NEVER_LOAD
1206 case STYP_NOLOAD:
1207 sec_flags |= SEC_NEVER_LOAD;
1208 break;
1209 #endif
1210 case IMAGE_SCN_MEM_READ:
1211 sec_flags &= ~SEC_COFF_NOREAD;
1212 break;
1213 case IMAGE_SCN_TYPE_NO_PAD:
1214 /* Skip. */
1215 break;
1216 case IMAGE_SCN_LNK_OTHER:
1217 unhandled = "IMAGE_SCN_LNK_OTHER";
1218 break;
1219 case IMAGE_SCN_MEM_NOT_CACHED:
1220 unhandled = "IMAGE_SCN_MEM_NOT_CACHED";
1221 break;
1222 case IMAGE_SCN_MEM_NOT_PAGED:
1223 /* Generate a warning message rather using the 'unhandled'
1224 variable as this will allow some .sys files generate by
1225 other toolchains to be processed. See bugzilla issue 196. */
1226 _bfd_error_handler (_("%B: Warning: Ignoring section flag IMAGE_SCN_MEM_NOT_PAGED in section %s"),
1227 abfd, name);
1228 break;
1229 case IMAGE_SCN_MEM_EXECUTE:
1230 sec_flags |= SEC_CODE;
1231 break;
1232 case IMAGE_SCN_MEM_WRITE:
1233 sec_flags &= ~ SEC_READONLY;
1234 break;
1235 case IMAGE_SCN_MEM_DISCARDABLE:
1236 /* The MS PE spec says that debug sections are DISCARDABLE,
1237 but the presence of a DISCARDABLE flag does not necessarily
1238 mean that a given section contains debug information. Thus
1239 we only set the SEC_DEBUGGING flag on sections that we
1240 recognise as containing debug information. */
1241 if (is_dbg
1242 #ifdef _COMMENT
1243 || strcmp (name, _COMMENT) == 0
1244 #endif
1245 )
1246 {
1247 sec_flags |= SEC_DEBUGGING | SEC_READONLY;
1248 }
1249 break;
1250 case IMAGE_SCN_MEM_SHARED:
1251 sec_flags |= SEC_COFF_SHARED;
1252 break;
1253 case IMAGE_SCN_LNK_REMOVE:
1254 if (!is_dbg)
1255 sec_flags |= SEC_EXCLUDE;
1256 break;
1257 case IMAGE_SCN_CNT_CODE:
1258 sec_flags |= SEC_CODE | SEC_ALLOC | SEC_LOAD;
1259 break;
1260 case IMAGE_SCN_CNT_INITIALIZED_DATA:
1261 if (is_dbg)
1262 sec_flags |= SEC_DEBUGGING;
1263 else
1264 sec_flags |= SEC_DATA | SEC_ALLOC | SEC_LOAD;
1265 break;
1266 case IMAGE_SCN_CNT_UNINITIALIZED_DATA:
1267 sec_flags |= SEC_ALLOC;
1268 break;
1269 case IMAGE_SCN_LNK_INFO:
1270 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
1271 defined. coff_compute_section_file_positions uses
1272 COFF_PAGE_SIZE to ensure that the low order bits of the
1273 section VMA and the file offset match. If we don't know
1274 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
1275 and demand page loading of the file will fail. */
1276 #ifdef COFF_PAGE_SIZE
1277 sec_flags |= SEC_DEBUGGING;
1278 #endif
1279 break;
1280 case IMAGE_SCN_LNK_COMDAT:
1281 /* COMDAT gets very special treatment. */
1282 sec_flags = handle_COMDAT (abfd, sec_flags, hdr, name, section);
1283 break;
1284 default:
1285 /* Silently ignore for now. */
1286 break;
1287 }
1288
1289 /* If the section flag was not handled, report it here. */
1290 if (unhandled != NULL)
1291 {
1292 (*_bfd_error_handler)
1293 (_("%B (%s): Section flag %s (0x%x) ignored"),
1294 abfd, name, unhandled, flag);
1295 result = FALSE;
1296 }
1297 }
1298
1299 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
1300 /* As a GNU extension, if the name begins with .gnu.linkonce, we
1301 only link a single copy of the section. This is used to support
1302 g++. g++ will emit each template expansion in its own section.
1303 The symbols will be defined as weak, so that multiple definitions
1304 are permitted. The GNU linker extension is to actually discard
1305 all but one of the sections. */
1306 if (CONST_STRNEQ (name, ".gnu.linkonce"))
1307 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1308 #endif
1309
1310 if (flags_ptr)
1311 * flags_ptr = sec_flags;
1312
1313 return result;
1314 }
1315
1316 #endif /* COFF_WITH_PE */
1317
1318 #define get_index(symbol) ((symbol)->udata.i)
1319
1320 /*
1321 INTERNAL_DEFINITION
1322 bfd_coff_backend_data
1323
1324 CODE_FRAGMENT
1325
1326 .{* COFF symbol classifications. *}
1327 .
1328 .enum coff_symbol_classification
1329 .{
1330 . {* Global symbol. *}
1331 . COFF_SYMBOL_GLOBAL,
1332 . {* Common symbol. *}
1333 . COFF_SYMBOL_COMMON,
1334 . {* Undefined symbol. *}
1335 . COFF_SYMBOL_UNDEFINED,
1336 . {* Local symbol. *}
1337 . COFF_SYMBOL_LOCAL,
1338 . {* PE section symbol. *}
1339 . COFF_SYMBOL_PE_SECTION
1340 .};
1341 .
1342 Special entry points for gdb to swap in coff symbol table parts:
1343 .typedef struct
1344 .{
1345 . void (*_bfd_coff_swap_aux_in)
1346 . (bfd *, void *, int, int, int, int, void *);
1347 .
1348 . void (*_bfd_coff_swap_sym_in)
1349 . (bfd *, void *, void *);
1350 .
1351 . void (*_bfd_coff_swap_lineno_in)
1352 . (bfd *, void *, void *);
1353 .
1354 . unsigned int (*_bfd_coff_swap_aux_out)
1355 . (bfd *, void *, int, int, int, int, void *);
1356 .
1357 . unsigned int (*_bfd_coff_swap_sym_out)
1358 . (bfd *, void *, void *);
1359 .
1360 . unsigned int (*_bfd_coff_swap_lineno_out)
1361 . (bfd *, void *, void *);
1362 .
1363 . unsigned int (*_bfd_coff_swap_reloc_out)
1364 . (bfd *, void *, void *);
1365 .
1366 . unsigned int (*_bfd_coff_swap_filehdr_out)
1367 . (bfd *, void *, void *);
1368 .
1369 . unsigned int (*_bfd_coff_swap_aouthdr_out)
1370 . (bfd *, void *, void *);
1371 .
1372 . unsigned int (*_bfd_coff_swap_scnhdr_out)
1373 . (bfd *, void *, void *);
1374 .
1375 . unsigned int _bfd_filhsz;
1376 . unsigned int _bfd_aoutsz;
1377 . unsigned int _bfd_scnhsz;
1378 . unsigned int _bfd_symesz;
1379 . unsigned int _bfd_auxesz;
1380 . unsigned int _bfd_relsz;
1381 . unsigned int _bfd_linesz;
1382 . unsigned int _bfd_filnmlen;
1383 . bfd_boolean _bfd_coff_long_filenames;
1384 .
1385 . bfd_boolean _bfd_coff_long_section_names;
1386 . bfd_boolean (*_bfd_coff_set_long_section_names)
1387 . (bfd *, int);
1388 .
1389 . unsigned int _bfd_coff_default_section_alignment_power;
1390 . bfd_boolean _bfd_coff_force_symnames_in_strings;
1391 . unsigned int _bfd_coff_debug_string_prefix_length;
1392 .
1393 . void (*_bfd_coff_swap_filehdr_in)
1394 . (bfd *, void *, void *);
1395 .
1396 . void (*_bfd_coff_swap_aouthdr_in)
1397 . (bfd *, void *, void *);
1398 .
1399 . void (*_bfd_coff_swap_scnhdr_in)
1400 . (bfd *, void *, void *);
1401 .
1402 . void (*_bfd_coff_swap_reloc_in)
1403 . (bfd *abfd, void *, void *);
1404 .
1405 . bfd_boolean (*_bfd_coff_bad_format_hook)
1406 . (bfd *, void *);
1407 .
1408 . bfd_boolean (*_bfd_coff_set_arch_mach_hook)
1409 . (bfd *, void *);
1410 .
1411 . void * (*_bfd_coff_mkobject_hook)
1412 . (bfd *, void *, void *);
1413 .
1414 . bfd_boolean (*_bfd_styp_to_sec_flags_hook)
1415 . (bfd *, void *, const char *, asection *, flagword *);
1416 .
1417 . void (*_bfd_set_alignment_hook)
1418 . (bfd *, asection *, void *);
1419 .
1420 . bfd_boolean (*_bfd_coff_slurp_symbol_table)
1421 . (bfd *);
1422 .
1423 . bfd_boolean (*_bfd_coff_symname_in_debug)
1424 . (bfd *, struct internal_syment *);
1425 .
1426 . bfd_boolean (*_bfd_coff_pointerize_aux_hook)
1427 . (bfd *, combined_entry_type *, combined_entry_type *,
1428 . unsigned int, combined_entry_type *);
1429 .
1430 . bfd_boolean (*_bfd_coff_print_aux)
1431 . (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1432 . combined_entry_type *, unsigned int);
1433 .
1434 . void (*_bfd_coff_reloc16_extra_cases)
1435 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
1436 . bfd_byte *, unsigned int *, unsigned int *);
1437 .
1438 . int (*_bfd_coff_reloc16_estimate)
1439 . (bfd *, asection *, arelent *, unsigned int,
1440 . struct bfd_link_info *);
1441 .
1442 . enum coff_symbol_classification (*_bfd_coff_classify_symbol)
1443 . (bfd *, struct internal_syment *);
1444 .
1445 . bfd_boolean (*_bfd_coff_compute_section_file_positions)
1446 . (bfd *);
1447 .
1448 . bfd_boolean (*_bfd_coff_start_final_link)
1449 . (bfd *, struct bfd_link_info *);
1450 .
1451 . bfd_boolean (*_bfd_coff_relocate_section)
1452 . (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
1453 . struct internal_reloc *, struct internal_syment *, asection **);
1454 .
1455 . reloc_howto_type *(*_bfd_coff_rtype_to_howto)
1456 . (bfd *, asection *, struct internal_reloc *,
1457 . struct coff_link_hash_entry *, struct internal_syment *,
1458 . bfd_vma *);
1459 .
1460 . bfd_boolean (*_bfd_coff_adjust_symndx)
1461 . (bfd *, struct bfd_link_info *, bfd *, asection *,
1462 . struct internal_reloc *, bfd_boolean *);
1463 .
1464 . bfd_boolean (*_bfd_coff_link_add_one_symbol)
1465 . (struct bfd_link_info *, bfd *, const char *, flagword,
1466 . asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
1467 . struct bfd_link_hash_entry **);
1468 .
1469 . bfd_boolean (*_bfd_coff_link_output_has_begun)
1470 . (bfd *, struct coff_final_link_info *);
1471 .
1472 . bfd_boolean (*_bfd_coff_final_link_postscript)
1473 . (bfd *, struct coff_final_link_info *);
1474 .
1475 . bfd_boolean (*_bfd_coff_print_pdata)
1476 . (bfd *, void *);
1477 .
1478 .} bfd_coff_backend_data;
1479 .
1480 .#define coff_backend_info(abfd) \
1481 . ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1482 .
1483 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1484 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1485 .
1486 .#define bfd_coff_swap_sym_in(a,e,i) \
1487 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1488 .
1489 .#define bfd_coff_swap_lineno_in(a,e,i) \
1490 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1491 .
1492 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1493 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1494 .
1495 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1496 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1497 .
1498 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1499 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1500 .
1501 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1502 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1503 .
1504 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1505 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1506 .
1507 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1508 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1509 .
1510 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1511 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1512 .
1513 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1514 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1515 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1516 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1517 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1518 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
1519 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1520 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1521 .#define bfd_coff_long_filenames(abfd) \
1522 . (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1523 .#define bfd_coff_long_section_names(abfd) \
1524 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1525 .#define bfd_coff_set_long_section_names(abfd, enable) \
1526 . ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable))
1527 .#define bfd_coff_default_section_alignment_power(abfd) \
1528 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1529 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1530 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1531 .
1532 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1533 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1534 .
1535 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1536 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1537 .
1538 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1539 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1540 .
1541 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1542 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1543 .
1544 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1545 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1546 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1547 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
1548 . (abfd, filehdr, aouthdr))
1549 .
1550 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
1551 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1552 . (abfd, scnhdr, name, section, flags_ptr))
1553 .
1554 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1555 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1556 .
1557 .#define bfd_coff_slurp_symbol_table(abfd)\
1558 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1559 .
1560 .#define bfd_coff_symname_in_debug(abfd, sym)\
1561 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1562 .
1563 .#define bfd_coff_force_symnames_in_strings(abfd)\
1564 . (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
1565 .
1566 .#define bfd_coff_debug_string_prefix_length(abfd)\
1567 . (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
1568 .
1569 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1570 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1571 . (abfd, file, base, symbol, aux, indaux))
1572 .
1573 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
1574 . reloc, data, src_ptr, dst_ptr)\
1575 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1576 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1577 .
1578 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1579 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1580 . (abfd, section, reloc, shrink, link_info))
1581 .
1582 .#define bfd_coff_classify_symbol(abfd, sym)\
1583 . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1584 . (abfd, sym))
1585 .
1586 .#define bfd_coff_compute_section_file_positions(abfd)\
1587 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1588 . (abfd))
1589 .
1590 .#define bfd_coff_start_final_link(obfd, info)\
1591 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1592 . (obfd, info))
1593 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1594 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1595 . (obfd, info, ibfd, o, con, rel, isyms, secs))
1596 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1597 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1598 . (abfd, sec, rel, h, sym, addendp))
1599 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1600 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1601 . (obfd, info, ibfd, sec, rel, adjustedp))
1602 .#define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
1603 . value, string, cp, coll, hashp)\
1604 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1605 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1606 .
1607 .#define bfd_coff_link_output_has_begun(a,p) \
1608 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p))
1609 .#define bfd_coff_final_link_postscript(a,p) \
1610 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
1611 .
1612 .#define bfd_coff_have_print_pdata(a) \
1613 . (coff_backend_info (a)->_bfd_coff_print_pdata)
1614 .#define bfd_coff_print_pdata(a,p) \
1615 . ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p))
1616 .
1617 .{* Macro: Returns true if the bfd is a PE executable as opposed to a
1618 . PE object file. *}
1619 .#define bfd_pei_p(abfd) \
1620 . (CONST_STRNEQ ((abfd)->xvec->name, "pei-"))
1621 */
1622
1623 /* See whether the magic number matches. */
1624
1625 static bfd_boolean
1626 coff_bad_format_hook (bfd * abfd ATTRIBUTE_UNUSED, void * filehdr)
1627 {
1628 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1629
1630 if (BADMAG (*internal_f))
1631 return FALSE;
1632
1633 /* If the optional header is NULL or not the correct size then
1634 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1635 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1636 optional header is of a different size.
1637
1638 But the mips keeps extra stuff in it's opthdr, so dont check
1639 when doing that. */
1640
1641 #if defined(M88) || defined(I960)
1642 if (internal_f->f_opthdr != 0 && bfd_coff_aoutsz (abfd) != internal_f->f_opthdr)
1643 return FALSE;
1644 #endif
1645
1646 return TRUE;
1647 }
1648
1649 #ifdef TICOFF
1650 static bfd_boolean
1651 ticoff0_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED, void * filehdr)
1652 {
1653 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1654
1655 if (COFF0_BADMAG (*internal_f))
1656 return FALSE;
1657
1658 return TRUE;
1659 }
1660 #endif
1661
1662 #ifdef TICOFF
1663 static bfd_boolean
1664 ticoff1_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED, void * filehdr)
1665 {
1666 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1667
1668 if (COFF1_BADMAG (*internal_f))
1669 return FALSE;
1670
1671 return TRUE;
1672 }
1673 #endif
1674
1675 /* Check whether this section uses an alignment other than the
1676 default. */
1677
1678 static void
1679 coff_set_custom_section_alignment (bfd *abfd ATTRIBUTE_UNUSED,
1680 asection *section,
1681 const struct coff_section_alignment_entry *alignment_table,
1682 const unsigned int table_size)
1683 {
1684 const unsigned int default_alignment = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1685 unsigned int i;
1686
1687 for (i = 0; i < table_size; ++i)
1688 {
1689 const char *secname = bfd_get_section_name (abfd, section);
1690
1691 if (alignment_table[i].comparison_length == (unsigned int) -1
1692 ? strcmp (alignment_table[i].name, secname) == 0
1693 : strncmp (alignment_table[i].name, secname,
1694 alignment_table[i].comparison_length) == 0)
1695 break;
1696 }
1697 if (i >= table_size)
1698 return;
1699
1700 if (alignment_table[i].default_alignment_min != COFF_ALIGNMENT_FIELD_EMPTY
1701 && default_alignment < alignment_table[i].default_alignment_min)
1702 return;
1703
1704 if (alignment_table[i].default_alignment_max != COFF_ALIGNMENT_FIELD_EMPTY
1705 #if COFF_DEFAULT_SECTION_ALIGNMENT_POWER != 0
1706 && default_alignment > alignment_table[i].default_alignment_max
1707 #endif
1708 )
1709 return;
1710
1711 section->alignment_power = alignment_table[i].alignment_power;
1712 }
1713
1714 /* Custom section alignment records. */
1715
1716 static const struct coff_section_alignment_entry
1717 coff_section_alignment_table[] =
1718 {
1719 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1720 COFF_SECTION_ALIGNMENT_ENTRIES,
1721 #endif
1722 /* There must not be any gaps between .stabstr sections. */
1723 { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1724 1, COFF_ALIGNMENT_FIELD_EMPTY, 0 },
1725 /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */
1726 { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1727 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1728 /* Similarly for the .ctors and .dtors sections. */
1729 { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1730 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1731 { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1732 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }
1733 };
1734
1735 static const unsigned int coff_section_alignment_table_size =
1736 sizeof coff_section_alignment_table / sizeof coff_section_alignment_table[0];
1737
1738 /* Initialize a section structure with information peculiar to this
1739 particular implementation of COFF. */
1740
1741 static bfd_boolean
1742 coff_new_section_hook (bfd * abfd, asection * section)
1743 {
1744 combined_entry_type *native;
1745 bfd_size_type amt;
1746 unsigned char sclass = C_STAT;
1747
1748 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1749
1750 #ifdef RS6000COFF_C
1751 if (bfd_xcoff_text_align_power (abfd) != 0
1752 && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
1753 section->alignment_power = bfd_xcoff_text_align_power (abfd);
1754 else if (bfd_xcoff_data_align_power (abfd) != 0
1755 && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
1756 section->alignment_power = bfd_xcoff_data_align_power (abfd);
1757 else
1758 {
1759 int i;
1760
1761 for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++)
1762 if (strcmp (bfd_get_section_name (abfd, section),
1763 xcoff_dwsect_names[i].name) == 0)
1764 {
1765 section->alignment_power = 0;
1766 sclass = C_DWARF;
1767 break;
1768 }
1769 }
1770 #endif
1771
1772 /* Set up the section symbol. */
1773 if (!_bfd_generic_new_section_hook (abfd, section))
1774 return FALSE;
1775
1776 /* Allocate aux records for section symbols, to store size and
1777 related info.
1778
1779 @@ The 10 is a guess at a plausible maximum number of aux entries
1780 (but shouldn't be a constant). */
1781 amt = sizeof (combined_entry_type) * 10;
1782 native = (combined_entry_type *) bfd_zalloc (abfd, amt);
1783 if (native == NULL)
1784 return FALSE;
1785
1786 /* We don't need to set up n_name, n_value, or n_scnum in the native
1787 symbol information, since they'll be overridden by the BFD symbol
1788 anyhow. However, we do need to set the type and storage class,
1789 in case this symbol winds up getting written out. The value 0
1790 for n_numaux is already correct. */
1791
1792 native->u.syment.n_type = T_NULL;
1793 native->u.syment.n_sclass = sclass;
1794
1795 coffsymbol (section->symbol)->native = native;
1796
1797 coff_set_custom_section_alignment (abfd, section,
1798 coff_section_alignment_table,
1799 coff_section_alignment_table_size);
1800
1801 return TRUE;
1802 }
1803
1804 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1805
1806 /* Set the alignment of a BFD section. */
1807
1808 static void
1809 coff_set_alignment_hook (bfd * abfd ATTRIBUTE_UNUSED,
1810 asection * section,
1811 void * scnhdr)
1812 {
1813 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1814 unsigned int i;
1815
1816 #ifdef I960
1817 /* Extract ALIGN from 2**ALIGN stored in section header. */
1818 for (i = 0; i < 32; i++)
1819 if ((1 << i) >= hdr->s_align)
1820 break;
1821 #endif
1822 #ifdef TIC80COFF
1823 /* TI tools puts the alignment power in bits 8-11. */
1824 i = (hdr->s_flags >> 8) & 0xF ;
1825 #endif
1826 #ifdef COFF_DECODE_ALIGNMENT
1827 i = COFF_DECODE_ALIGNMENT(hdr->s_flags);
1828 #endif
1829 section->alignment_power = i;
1830
1831 #ifdef coff_set_section_load_page
1832 coff_set_section_load_page (section, hdr->s_page);
1833 #endif
1834 }
1835
1836 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1837 #ifdef COFF_WITH_PE
1838
1839 static void
1840 coff_set_alignment_hook (bfd * abfd ATTRIBUTE_UNUSED,
1841 asection * section,
1842 void * scnhdr)
1843 {
1844 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1845 bfd_size_type amt;
1846 unsigned int alignment_power_const
1847 = hdr->s_flags & IMAGE_SCN_ALIGN_POWER_BIT_MASK;
1848
1849 switch (alignment_power_const)
1850 {
1851 case IMAGE_SCN_ALIGN_8192BYTES:
1852 case IMAGE_SCN_ALIGN_4096BYTES:
1853 case IMAGE_SCN_ALIGN_2048BYTES:
1854 case IMAGE_SCN_ALIGN_1024BYTES:
1855 case IMAGE_SCN_ALIGN_512BYTES:
1856 case IMAGE_SCN_ALIGN_256BYTES:
1857 case IMAGE_SCN_ALIGN_128BYTES:
1858 case IMAGE_SCN_ALIGN_64BYTES:
1859 case IMAGE_SCN_ALIGN_32BYTES:
1860 case IMAGE_SCN_ALIGN_16BYTES:
1861 case IMAGE_SCN_ALIGN_8BYTES:
1862 case IMAGE_SCN_ALIGN_4BYTES:
1863 case IMAGE_SCN_ALIGN_2BYTES:
1864 case IMAGE_SCN_ALIGN_1BYTES:
1865 section->alignment_power
1866 = IMAGE_SCN_ALIGN_POWER_NUM (alignment_power_const);
1867 break;
1868 default:
1869 break;
1870 }
1871
1872 /* In a PE image file, the s_paddr field holds the virtual size of a
1873 section, while the s_size field holds the raw size. We also keep
1874 the original section flag value, since not every bit can be
1875 mapped onto a generic BFD section bit. */
1876 if (coff_section_data (abfd, section) == NULL)
1877 {
1878 amt = sizeof (struct coff_section_tdata);
1879 section->used_by_bfd = bfd_zalloc (abfd, amt);
1880 if (section->used_by_bfd == NULL)
1881 /* FIXME: Return error. */
1882 abort ();
1883 }
1884
1885 if (pei_section_data (abfd, section) == NULL)
1886 {
1887 amt = sizeof (struct pei_section_tdata);
1888 coff_section_data (abfd, section)->tdata = bfd_zalloc (abfd, amt);
1889 if (coff_section_data (abfd, section)->tdata == NULL)
1890 /* FIXME: Return error. */
1891 abort ();
1892 }
1893 pei_section_data (abfd, section)->virt_size = hdr->s_paddr;
1894 pei_section_data (abfd, section)->pe_flags = hdr->s_flags;
1895
1896 section->lma = hdr->s_vaddr;
1897
1898 /* Check for extended relocs. */
1899 if (hdr->s_flags & IMAGE_SCN_LNK_NRELOC_OVFL)
1900 {
1901 struct external_reloc dst;
1902 struct internal_reloc n;
1903 file_ptr oldpos = bfd_tell (abfd);
1904 bfd_size_type relsz = bfd_coff_relsz (abfd);
1905
1906 if (bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0) != 0)
1907 return;
1908 if (bfd_bread (& dst, relsz, abfd) != relsz)
1909 return;
1910
1911 coff_swap_reloc_in (abfd, &dst, &n);
1912 if (bfd_seek (abfd, oldpos, 0) != 0)
1913 return;
1914 section->reloc_count = hdr->s_nreloc = n.r_vaddr - 1;
1915 section->rel_filepos += relsz;
1916 }
1917 else if (hdr->s_nreloc == 0xffff)
1918 (*_bfd_error_handler)
1919 ("%s: warning: claims to have 0xffff relocs, without overflow",
1920 bfd_get_filename (abfd));
1921 }
1922 #undef ALIGN_SET
1923 #undef ELIFALIGN_SET
1924
1925 #else /* ! COFF_WITH_PE */
1926 #ifdef RS6000COFF_C
1927
1928 /* We grossly abuse this function to handle XCOFF overflow headers.
1929 When we see one, we correct the reloc and line number counts in the
1930 real header, and remove the section we just created. */
1931
1932 static void
1933 coff_set_alignment_hook (bfd *abfd, asection *section, void * scnhdr)
1934 {
1935 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1936 asection *real_sec;
1937
1938 if ((hdr->s_flags & STYP_OVRFLO) == 0)
1939 return;
1940
1941 real_sec = coff_section_from_bfd_index (abfd, (int) hdr->s_nreloc);
1942 if (real_sec == NULL)
1943 return;
1944
1945 real_sec->reloc_count = hdr->s_paddr;
1946 real_sec->lineno_count = hdr->s_vaddr;
1947
1948 if (!bfd_section_removed_from_list (abfd, section))
1949 {
1950 bfd_section_list_remove (abfd, section);
1951 --abfd->section_count;
1952 }
1953 }
1954
1955 #else /* ! RS6000COFF_C */
1956
1957 #define coff_set_alignment_hook \
1958 ((void (*) (bfd *, asection *, void *)) bfd_void)
1959
1960 #endif /* ! RS6000COFF_C */
1961 #endif /* ! COFF_WITH_PE */
1962 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1963
1964 #ifndef coff_mkobject
1965
1966 static bfd_boolean
1967 coff_mkobject (bfd * abfd)
1968 {
1969 coff_data_type *coff;
1970 bfd_size_type amt = sizeof (coff_data_type);
1971
1972 abfd->tdata.coff_obj_data = bfd_zalloc (abfd, amt);
1973 if (abfd->tdata.coff_obj_data == NULL)
1974 return FALSE;
1975 coff = coff_data (abfd);
1976 coff->symbols = NULL;
1977 coff->conversion_table = NULL;
1978 coff->raw_syments = NULL;
1979 coff->relocbase = 0;
1980 coff->local_toc_sym_map = 0;
1981
1982 /* make_abs_section(abfd);*/
1983
1984 return TRUE;
1985 }
1986 #endif
1987
1988 /* Create the COFF backend specific information. */
1989
1990 #ifndef coff_mkobject_hook
1991 static void *
1992 coff_mkobject_hook (bfd * abfd,
1993 void * filehdr,
1994 void * aouthdr ATTRIBUTE_UNUSED)
1995 {
1996 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1997 coff_data_type *coff;
1998
1999 if (! coff_mkobject (abfd))
2000 return NULL;
2001
2002 coff = coff_data (abfd);
2003
2004 coff->sym_filepos = internal_f->f_symptr;
2005
2006 /* These members communicate important constants about the symbol
2007 table to GDB's symbol-reading code. These `constants'
2008 unfortunately vary among coff implementations... */
2009 coff->local_n_btmask = N_BTMASK;
2010 coff->local_n_btshft = N_BTSHFT;
2011 coff->local_n_tmask = N_TMASK;
2012 coff->local_n_tshift = N_TSHIFT;
2013 coff->local_symesz = bfd_coff_symesz (abfd);
2014 coff->local_auxesz = bfd_coff_auxesz (abfd);
2015 coff->local_linesz = bfd_coff_linesz (abfd);
2016
2017 coff->timestamp = internal_f->f_timdat;
2018
2019 obj_raw_syment_count (abfd) =
2020 obj_conv_table_size (abfd) =
2021 internal_f->f_nsyms;
2022
2023 #ifdef RS6000COFF_C
2024 if ((internal_f->f_flags & F_SHROBJ) != 0)
2025 abfd->flags |= DYNAMIC;
2026 if (aouthdr != NULL && internal_f->f_opthdr >= bfd_coff_aoutsz (abfd))
2027 {
2028 struct internal_aouthdr *internal_a =
2029 (struct internal_aouthdr *) aouthdr;
2030 struct xcoff_tdata *xcoff;
2031
2032 xcoff = xcoff_data (abfd);
2033 # ifdef U803XTOCMAGIC
2034 xcoff->xcoff64 = internal_f->f_magic == U803XTOCMAGIC;
2035 # else
2036 xcoff->xcoff64 = 0;
2037 # endif
2038 xcoff->full_aouthdr = TRUE;
2039 xcoff->toc = internal_a->o_toc;
2040 xcoff->sntoc = internal_a->o_sntoc;
2041 xcoff->snentry = internal_a->o_snentry;
2042 bfd_xcoff_text_align_power (abfd) = internal_a->o_algntext;
2043 bfd_xcoff_data_align_power (abfd) = internal_a->o_algndata;
2044 xcoff->modtype = internal_a->o_modtype;
2045 xcoff->cputype = internal_a->o_cputype;
2046 xcoff->maxdata = internal_a->o_maxdata;
2047 xcoff->maxstack = internal_a->o_maxstack;
2048 }
2049 #endif
2050
2051 #ifdef ARM
2052 /* Set the flags field from the COFF header read in. */
2053 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
2054 coff->flags = 0;
2055 #endif
2056
2057 #ifdef COFF_WITH_PE
2058 /* FIXME: I'm not sure this is ever executed, since peicode.h
2059 defines coff_mkobject_hook. */
2060 if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
2061 abfd->flags |= HAS_DEBUG;
2062 #endif
2063
2064 if ((internal_f->f_flags & F_GO32STUB) != 0)
2065 coff->go32stub = (char *) bfd_alloc (abfd, (bfd_size_type) GO32_STUBSIZE);
2066 if (coff->go32stub != NULL)
2067 memcpy (coff->go32stub, internal_f->go32stub, GO32_STUBSIZE);
2068
2069 return coff;
2070 }
2071 #endif
2072
2073 /* Determine the machine architecture and type. FIXME: This is target
2074 dependent because the magic numbers are defined in the target
2075 dependent header files. But there is no particular need for this.
2076 If the magic numbers were moved to a separate file, this function
2077 would be target independent and would also be much more successful
2078 at linking together COFF files for different architectures. */
2079
2080 static bfd_boolean
2081 coff_set_arch_mach_hook (bfd *abfd, void * filehdr)
2082 {
2083 unsigned long machine;
2084 enum bfd_architecture arch;
2085 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
2086
2087 /* Zero selects the default machine for an arch. */
2088 machine = 0;
2089 switch (internal_f->f_magic)
2090 {
2091 #ifdef OR32_MAGIC_BIG
2092 case OR32_MAGIC_BIG:
2093 case OR32_MAGIC_LITTLE:
2094 arch = bfd_arch_or32;
2095 break;
2096 #endif
2097 #ifdef PPCMAGIC
2098 case PPCMAGIC:
2099 arch = bfd_arch_powerpc;
2100 break;
2101 #endif
2102 #ifdef I386MAGIC
2103 case I386MAGIC:
2104 case I386PTXMAGIC:
2105 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler. */
2106 case LYNXCOFFMAGIC: /* Shadows the m68k Lynx number below, sigh. */
2107 arch = bfd_arch_i386;
2108 break;
2109 #endif
2110 #ifdef AMD64MAGIC
2111 case AMD64MAGIC:
2112 arch = bfd_arch_i386;
2113 machine = bfd_mach_x86_64;
2114 break;
2115 #endif
2116 #ifdef IA64MAGIC
2117 case IA64MAGIC:
2118 arch = bfd_arch_ia64;
2119 break;
2120 #endif
2121 #ifdef ARMMAGIC
2122 case ARMMAGIC:
2123 case ARMPEMAGIC:
2124 case THUMBPEMAGIC:
2125 arch = bfd_arch_arm;
2126 machine = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
2127 if (machine == bfd_mach_arm_unknown)
2128 {
2129 switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK)
2130 {
2131 case F_ARM_2: machine = bfd_mach_arm_2; break;
2132 case F_ARM_2a: machine = bfd_mach_arm_2a; break;
2133 case F_ARM_3: machine = bfd_mach_arm_3; break;
2134 default:
2135 case F_ARM_3M: machine = bfd_mach_arm_3M; break;
2136 case F_ARM_4: machine = bfd_mach_arm_4; break;
2137 case F_ARM_4T: machine = bfd_mach_arm_4T; break;
2138 /* The COFF header does not have enough bits available
2139 to cover all the different ARM architectures. So
2140 we interpret F_ARM_5, the highest flag value to mean
2141 "the highest ARM architecture known to BFD" which is
2142 currently the XScale. */
2143 case F_ARM_5: machine = bfd_mach_arm_XScale; break;
2144 }
2145 }
2146 break;
2147 #endif
2148 #ifdef MC68MAGIC
2149 case MC68MAGIC:
2150 case M68MAGIC:
2151 #ifdef MC68KBCSMAGIC
2152 case MC68KBCSMAGIC:
2153 #endif
2154 #ifdef APOLLOM68KMAGIC
2155 case APOLLOM68KMAGIC:
2156 #endif
2157 #ifdef LYNXCOFFMAGIC
2158 case LYNXCOFFMAGIC:
2159 #endif
2160 arch = bfd_arch_m68k;
2161 machine = bfd_mach_m68020;
2162 break;
2163 #endif
2164 #ifdef MC88MAGIC
2165 case MC88MAGIC:
2166 case MC88DMAGIC:
2167 case MC88OMAGIC:
2168 arch = bfd_arch_m88k;
2169 machine = 88100;
2170 break;
2171 #endif
2172 #ifdef Z80MAGIC
2173 case Z80MAGIC:
2174 arch = bfd_arch_z80;
2175 switch (internal_f->f_flags & F_MACHMASK)
2176 {
2177 case 0:
2178 case bfd_mach_z80strict << 12:
2179 case bfd_mach_z80 << 12:
2180 case bfd_mach_z80full << 12:
2181 case bfd_mach_r800 << 12:
2182 machine = ((unsigned)internal_f->f_flags & F_MACHMASK) >> 12;
2183 break;
2184 default:
2185 return FALSE;
2186 }
2187 break;
2188 #endif
2189 #ifdef Z8KMAGIC
2190 case Z8KMAGIC:
2191 arch = bfd_arch_z8k;
2192 switch (internal_f->f_flags & F_MACHMASK)
2193 {
2194 case F_Z8001:
2195 machine = bfd_mach_z8001;
2196 break;
2197 case F_Z8002:
2198 machine = bfd_mach_z8002;
2199 break;
2200 default:
2201 return FALSE;
2202 }
2203 break;
2204 #endif
2205 #ifdef I860
2206 case I860MAGIC:
2207 arch = bfd_arch_i860;
2208 break;
2209 #endif
2210 #ifdef I960
2211 #ifdef I960ROMAGIC
2212 case I960ROMAGIC:
2213 case I960RWMAGIC:
2214 arch = bfd_arch_i960;
2215 switch (F_I960TYPE & internal_f->f_flags)
2216 {
2217 default:
2218 case F_I960CORE:
2219 machine = bfd_mach_i960_core;
2220 break;
2221 case F_I960KB:
2222 machine = bfd_mach_i960_kb_sb;
2223 break;
2224 case F_I960MC:
2225 machine = bfd_mach_i960_mc;
2226 break;
2227 case F_I960XA:
2228 machine = bfd_mach_i960_xa;
2229 break;
2230 case F_I960CA:
2231 machine = bfd_mach_i960_ca;
2232 break;
2233 case F_I960KA:
2234 machine = bfd_mach_i960_ka_sa;
2235 break;
2236 case F_I960JX:
2237 machine = bfd_mach_i960_jx;
2238 break;
2239 case F_I960HX:
2240 machine = bfd_mach_i960_hx;
2241 break;
2242 }
2243 break;
2244 #endif
2245 #endif
2246
2247 #ifdef RS6000COFF_C
2248 #ifdef XCOFF64
2249 case U64_TOCMAGIC:
2250 case U803XTOCMAGIC:
2251 #else
2252 case U802ROMAGIC:
2253 case U802WRMAGIC:
2254 case U802TOCMAGIC:
2255 #endif
2256 {
2257 int cputype;
2258
2259 if (xcoff_data (abfd)->cputype != -1)
2260 cputype = xcoff_data (abfd)->cputype & 0xff;
2261 else
2262 {
2263 /* We did not get a value from the a.out header. If the
2264 file has not been stripped, we may be able to get the
2265 architecture information from the first symbol, if it
2266 is a .file symbol. */
2267 if (obj_raw_syment_count (abfd) == 0)
2268 cputype = 0;
2269 else
2270 {
2271 bfd_byte *buf;
2272 struct internal_syment sym;
2273 bfd_size_type amt = bfd_coff_symesz (abfd);
2274
2275 buf = bfd_malloc (amt);
2276 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
2277 || bfd_bread (buf, amt, abfd) != amt)
2278 {
2279 free (buf);
2280 return FALSE;
2281 }
2282 bfd_coff_swap_sym_in (abfd, buf, & sym);
2283 if (sym.n_sclass == C_FILE)
2284 cputype = sym.n_type & 0xff;
2285 else
2286 cputype = 0;
2287 free (buf);
2288 }
2289 }
2290
2291 /* FIXME: We don't handle all cases here. */
2292 switch (cputype)
2293 {
2294 default:
2295 case 0:
2296 arch = bfd_xcoff_architecture (abfd);
2297 machine = bfd_xcoff_machine (abfd);
2298 break;
2299
2300 case 1:
2301 arch = bfd_arch_powerpc;
2302 machine = bfd_mach_ppc_601;
2303 break;
2304 case 2: /* 64 bit PowerPC */
2305 arch = bfd_arch_powerpc;
2306 machine = bfd_mach_ppc_620;
2307 break;
2308 case 3:
2309 arch = bfd_arch_powerpc;
2310 machine = bfd_mach_ppc;
2311 break;
2312 case 4:
2313 arch = bfd_arch_rs6000;
2314 machine = bfd_mach_rs6k;
2315 break;
2316 }
2317 }
2318 break;
2319 #endif
2320
2321 #ifdef WE32KMAGIC
2322 case WE32KMAGIC:
2323 arch = bfd_arch_we32k;
2324 break;
2325 #endif
2326
2327 #ifdef H8300MAGIC
2328 case H8300MAGIC:
2329 arch = bfd_arch_h8300;
2330 machine = bfd_mach_h8300;
2331 /* !! FIXME this probably isn't the right place for this. */
2332 abfd->flags |= BFD_IS_RELAXABLE;
2333 break;
2334 #endif
2335
2336 #ifdef H8300HMAGIC
2337 case H8300HMAGIC:
2338 arch = bfd_arch_h8300;
2339 machine = bfd_mach_h8300h;
2340 /* !! FIXME this probably isn't the right place for this. */
2341 abfd->flags |= BFD_IS_RELAXABLE;
2342 break;
2343 #endif
2344
2345 #ifdef H8300SMAGIC
2346 case H8300SMAGIC:
2347 arch = bfd_arch_h8300;
2348 machine = bfd_mach_h8300s;
2349 /* !! FIXME this probably isn't the right place for this. */
2350 abfd->flags |= BFD_IS_RELAXABLE;
2351 break;
2352 #endif
2353
2354 #ifdef H8300HNMAGIC
2355 case H8300HNMAGIC:
2356 arch = bfd_arch_h8300;
2357 machine = bfd_mach_h8300hn;
2358 /* !! FIXME this probably isn't the right place for this. */
2359 abfd->flags |= BFD_IS_RELAXABLE;
2360 break;
2361 #endif
2362
2363 #ifdef H8300SNMAGIC
2364 case H8300SNMAGIC:
2365 arch = bfd_arch_h8300;
2366 machine = bfd_mach_h8300sn;
2367 /* !! FIXME this probably isn't the right place for this. */
2368 abfd->flags |= BFD_IS_RELAXABLE;
2369 break;
2370 #endif
2371
2372 #ifdef SH_ARCH_MAGIC_BIG
2373 case SH_ARCH_MAGIC_BIG:
2374 case SH_ARCH_MAGIC_LITTLE:
2375 #ifdef COFF_WITH_PE
2376 case SH_ARCH_MAGIC_WINCE:
2377 #endif
2378 arch = bfd_arch_sh;
2379 break;
2380 #endif
2381
2382 #ifdef MIPS_ARCH_MAGIC_WINCE
2383 case MIPS_ARCH_MAGIC_WINCE:
2384 arch = bfd_arch_mips;
2385 break;
2386 #endif
2387
2388 #ifdef H8500MAGIC
2389 case H8500MAGIC:
2390 arch = bfd_arch_h8500;
2391 break;
2392 #endif
2393
2394 #ifdef SPARCMAGIC
2395 case SPARCMAGIC:
2396 #ifdef LYNXCOFFMAGIC
2397 case LYNXCOFFMAGIC:
2398 #endif
2399 arch = bfd_arch_sparc;
2400 break;
2401 #endif
2402
2403 #ifdef TIC30MAGIC
2404 case TIC30MAGIC:
2405 arch = bfd_arch_tic30;
2406 break;
2407 #endif
2408
2409 #ifdef TICOFF0MAGIC
2410 #ifdef TICOFF_TARGET_ARCH
2411 /* This TI COFF section should be used by all new TI COFF v0 targets. */
2412 case TICOFF0MAGIC:
2413 arch = TICOFF_TARGET_ARCH;
2414 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2415 break;
2416 #endif
2417 #endif
2418
2419 #ifdef TICOFF1MAGIC
2420 /* This TI COFF section should be used by all new TI COFF v1/2 targets. */
2421 /* TI COFF1 and COFF2 use the target_id field to specify which arch. */
2422 case TICOFF1MAGIC:
2423 case TICOFF2MAGIC:
2424 switch (internal_f->f_target_id)
2425 {
2426 #ifdef TI_TARGET_ID
2427 case TI_TARGET_ID:
2428 arch = TICOFF_TARGET_ARCH;
2429 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2430 break;
2431 #endif
2432 default:
2433 arch = bfd_arch_obscure;
2434 (*_bfd_error_handler)
2435 (_("Unrecognized TI COFF target id '0x%x'"),
2436 internal_f->f_target_id);
2437 break;
2438 }
2439 break;
2440 #endif
2441
2442 #ifdef TIC80_ARCH_MAGIC
2443 case TIC80_ARCH_MAGIC:
2444 arch = bfd_arch_tic80;
2445 break;
2446 #endif
2447
2448 #ifdef MCOREMAGIC
2449 case MCOREMAGIC:
2450 arch = bfd_arch_mcore;
2451 break;
2452 #endif
2453
2454 #ifdef W65MAGIC
2455 case W65MAGIC:
2456 arch = bfd_arch_w65;
2457 break;
2458 #endif
2459
2460 default: /* Unreadable input file type. */
2461 arch = bfd_arch_obscure;
2462 break;
2463 }
2464
2465 bfd_default_set_arch_mach (abfd, arch, machine);
2466 return TRUE;
2467 }
2468
2469 #ifdef SYMNAME_IN_DEBUG
2470
2471 static bfd_boolean
2472 symname_in_debug_hook (bfd * abfd ATTRIBUTE_UNUSED, struct internal_syment *sym)
2473 {
2474 return SYMNAME_IN_DEBUG (sym) != 0;
2475 }
2476
2477 #else
2478
2479 #define symname_in_debug_hook \
2480 (bfd_boolean (*) (bfd *, struct internal_syment *)) bfd_false
2481
2482 #endif
2483
2484 #ifdef RS6000COFF_C
2485
2486 #ifdef XCOFF64
2487 #define FORCE_SYMNAMES_IN_STRINGS
2488 #endif
2489
2490 /* Handle the csect auxent of a C_EXT, C_AIX_WEAKEXT or C_HIDEXT symbol. */
2491
2492 static bfd_boolean
2493 coff_pointerize_aux_hook (bfd *abfd ATTRIBUTE_UNUSED,
2494 combined_entry_type *table_base,
2495 combined_entry_type *symbol,
2496 unsigned int indaux,
2497 combined_entry_type *aux)
2498 {
2499 int n_sclass = symbol->u.syment.n_sclass;
2500
2501 if (CSECT_SYM_P (n_sclass)
2502 && indaux + 1 == symbol->u.syment.n_numaux)
2503 {
2504 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2505 {
2506 aux->u.auxent.x_csect.x_scnlen.p =
2507 table_base + aux->u.auxent.x_csect.x_scnlen.l;
2508 aux->fix_scnlen = 1;
2509 }
2510
2511 /* Return TRUE to indicate that the caller should not do any
2512 further work on this auxent. */
2513 return TRUE;
2514 }
2515
2516 /* Return FALSE to indicate that this auxent should be handled by
2517 the caller. */
2518 return FALSE;
2519 }
2520
2521 #else
2522 #ifdef I960
2523
2524 /* We don't want to pointerize bal entries. */
2525
2526 static bfd_boolean
2527 coff_pointerize_aux_hook (bfd *abfd ATTRIBUTE_UNUSED,
2528 combined_entry_type *table_base ATTRIBUTE_UNUSED,
2529 combined_entry_type *symbol,
2530 unsigned int indaux,
2531 combined_entry_type *aux ATTRIBUTE_UNUSED)
2532 {
2533 /* Return TRUE if we don't want to pointerize this aux entry, which
2534 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2535 return (indaux == 1
2536 && (symbol->u.syment.n_sclass == C_LEAFPROC
2537 || symbol->u.syment.n_sclass == C_LEAFSTAT
2538 || symbol->u.syment.n_sclass == C_LEAFEXT));
2539 }
2540
2541 #else /* ! I960 */
2542
2543 #define coff_pointerize_aux_hook 0
2544
2545 #endif /* ! I960 */
2546 #endif /* ! RS6000COFF_C */
2547
2548 /* Print an aux entry. This returns TRUE if it has printed it. */
2549
2550 static bfd_boolean
2551 coff_print_aux (bfd *abfd ATTRIBUTE_UNUSED,
2552 FILE *file ATTRIBUTE_UNUSED,
2553 combined_entry_type *table_base ATTRIBUTE_UNUSED,
2554 combined_entry_type *symbol ATTRIBUTE_UNUSED,
2555 combined_entry_type *aux ATTRIBUTE_UNUSED,
2556 unsigned int indaux ATTRIBUTE_UNUSED)
2557 {
2558 #ifdef RS6000COFF_C
2559 if (CSECT_SYM_P (symbol->u.syment.n_sclass)
2560 && indaux + 1 == symbol->u.syment.n_numaux)
2561 {
2562 /* This is a csect entry. */
2563 fprintf (file, "AUX ");
2564 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
2565 {
2566 BFD_ASSERT (! aux->fix_scnlen);
2567 #ifdef XCOFF64
2568 fprintf (file, "val %5lld",
2569 (long long) aux->u.auxent.x_csect.x_scnlen.l);
2570 #else
2571 fprintf (file, "val %5ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2572 #endif
2573 }
2574 else
2575 {
2576 fprintf (file, "indx ");
2577 if (! aux->fix_scnlen)
2578 #ifdef XCOFF64
2579 fprintf (file, "%4lld",
2580 (long long) aux->u.auxent.x_csect.x_scnlen.l);
2581 #else
2582 fprintf (file, "%4ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2583 #endif
2584 else
2585 fprintf (file, "%4ld",
2586 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
2587 }
2588 fprintf (file,
2589 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2590 aux->u.auxent.x_csect.x_parmhash,
2591 (unsigned int) aux->u.auxent.x_csect.x_snhash,
2592 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
2593 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
2594 (unsigned int) aux->u.auxent.x_csect.x_smclas,
2595 aux->u.auxent.x_csect.x_stab,
2596 (unsigned int) aux->u.auxent.x_csect.x_snstab);
2597 return TRUE;
2598 }
2599 #endif
2600
2601 /* Return FALSE to indicate that no special action was taken. */
2602 return FALSE;
2603 }
2604
2605 /*
2606 SUBSUBSECTION
2607 Writing relocations
2608
2609 To write relocations, the back end steps though the
2610 canonical relocation table and create an
2611 @code{internal_reloc}. The symbol index to use is removed from
2612 the @code{offset} field in the symbol table supplied. The
2613 address comes directly from the sum of the section base
2614 address and the relocation offset; the type is dug directly
2615 from the howto field. Then the @code{internal_reloc} is
2616 swapped into the shape of an @code{external_reloc} and written
2617 out to disk.
2618
2619 */
2620
2621 #ifdef TARG_AUX
2622
2623
2624 /* AUX's ld wants relocations to be sorted. */
2625 static int
2626 compare_arelent_ptr (const void * x, const void * y)
2627 {
2628 const arelent **a = (const arelent **) x;
2629 const arelent **b = (const arelent **) y;
2630 bfd_size_type aadr = (*a)->address;
2631 bfd_size_type badr = (*b)->address;
2632
2633 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
2634 }
2635
2636 #endif /* TARG_AUX */
2637
2638 static bfd_boolean
2639 coff_write_relocs (bfd * abfd, int first_undef)
2640 {
2641 asection *s;
2642
2643 for (s = abfd->sections; s != NULL; s = s->next)
2644 {
2645 unsigned int i;
2646 struct external_reloc dst;
2647 arelent **p;
2648
2649 #ifndef TARG_AUX
2650 p = s->orelocation;
2651 #else
2652 {
2653 /* Sort relocations before we write them out. */
2654 bfd_size_type amt;
2655
2656 amt = s->reloc_count;
2657 amt *= sizeof (arelent *);
2658 p = bfd_malloc (amt);
2659 if (p == NULL && s->reloc_count > 0)
2660 return FALSE;
2661 memcpy (p, s->orelocation, (size_t) amt);
2662 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
2663 }
2664 #endif
2665
2666 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
2667 return FALSE;
2668
2669 #ifdef COFF_WITH_PE
2670 if (obj_pe (abfd) && s->reloc_count >= 0xffff)
2671 {
2672 /* Encode real count here as first reloc. */
2673 struct internal_reloc n;
2674
2675 memset (& n, 0, sizeof (n));
2676 /* Add one to count *this* reloc (grr). */
2677 n.r_vaddr = s->reloc_count + 1;
2678 coff_swap_reloc_out (abfd, &n, &dst);
2679 if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd),
2680 abfd) != bfd_coff_relsz (abfd))
2681 return FALSE;
2682 }
2683 #endif
2684
2685 for (i = 0; i < s->reloc_count; i++)
2686 {
2687 struct internal_reloc n;
2688 arelent *q = p[i];
2689
2690 memset (& n, 0, sizeof (n));
2691
2692 /* Now we've renumbered the symbols we know where the
2693 undefined symbols live in the table. Check the reloc
2694 entries for symbols who's output bfd isn't the right one.
2695 This is because the symbol was undefined (which means
2696 that all the pointers are never made to point to the same
2697 place). This is a bad thing,'cause the symbols attached
2698 to the output bfd are indexed, so that the relocation
2699 entries know which symbol index they point to. So we
2700 have to look up the output symbol here. */
2701
2702 if (q->sym_ptr_ptr[0] != NULL && q->sym_ptr_ptr[0]->the_bfd != abfd)
2703 {
2704 int j;
2705 const char *sname = q->sym_ptr_ptr[0]->name;
2706 asymbol **outsyms = abfd->outsymbols;
2707
2708 for (j = first_undef; outsyms[j]; j++)
2709 {
2710 const char *intable = outsyms[j]->name;
2711
2712 if (strcmp (intable, sname) == 0)
2713 {
2714 /* Got a hit, so repoint the reloc. */
2715 q->sym_ptr_ptr = outsyms + j;
2716 break;
2717 }
2718 }
2719 }
2720
2721 n.r_vaddr = q->address + s->vma;
2722
2723 #ifdef R_IHCONST
2724 /* The 29k const/consth reloc pair is a real kludge. The consth
2725 part doesn't have a symbol; it has an offset. So rebuilt
2726 that here. */
2727 if (q->howto->type == R_IHCONST)
2728 n.r_symndx = q->addend;
2729 else
2730 #endif
2731 if (q->sym_ptr_ptr && q->sym_ptr_ptr[0] != NULL)
2732 {
2733 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2734 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q, s))
2735 #else
2736 if ((*q->sym_ptr_ptr)->section == bfd_abs_section_ptr
2737 && ((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0)
2738 #endif
2739 /* This is a relocation relative to the absolute symbol. */
2740 n.r_symndx = -1;
2741 else
2742 {
2743 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
2744 /* Check to see if the symbol reloc points to a symbol
2745 we don't have in our symbol table. */
2746 if (n.r_symndx > obj_conv_table_size (abfd))
2747 {
2748 bfd_set_error (bfd_error_bad_value);
2749 _bfd_error_handler (_("%B: reloc against a non-existant symbol index: %ld"),
2750 abfd, n.r_symndx);
2751 return FALSE;
2752 }
2753 }
2754 }
2755
2756 #ifdef SWAP_OUT_RELOC_OFFSET
2757 n.r_offset = q->addend;
2758 #endif
2759
2760 #ifdef SELECT_RELOC
2761 /* Work out reloc type from what is required. */
2762 SELECT_RELOC (n, q->howto);
2763 #else
2764 n.r_type = q->howto->type;
2765 #endif
2766 coff_swap_reloc_out (abfd, &n, &dst);
2767
2768 if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd),
2769 abfd) != bfd_coff_relsz (abfd))
2770 return FALSE;
2771 }
2772
2773 #ifdef TARG_AUX
2774 if (p != NULL)
2775 free (p);
2776 #endif
2777 }
2778
2779 return TRUE;
2780 }
2781
2782 /* Set flags and magic number of a coff file from architecture and machine
2783 type. Result is TRUE if we can represent the arch&type, FALSE if not. */
2784
2785 static bfd_boolean
2786 coff_set_flags (bfd * abfd,
2787 unsigned int *magicp ATTRIBUTE_UNUSED,
2788 unsigned short *flagsp ATTRIBUTE_UNUSED)
2789 {
2790 switch (bfd_get_arch (abfd))
2791 {
2792 #ifdef Z80MAGIC
2793 case bfd_arch_z80:
2794 *magicp = Z80MAGIC;
2795 switch (bfd_get_mach (abfd))
2796 {
2797 case 0:
2798 case bfd_mach_z80strict:
2799 case bfd_mach_z80:
2800 case bfd_mach_z80full:
2801 case bfd_mach_r800:
2802 *flagsp = bfd_get_mach (abfd) << 12;
2803 break;
2804 default:
2805 return FALSE;
2806 }
2807 return TRUE;
2808 #endif
2809
2810 #ifdef Z8KMAGIC
2811 case bfd_arch_z8k:
2812 *magicp = Z8KMAGIC;
2813
2814 switch (bfd_get_mach (abfd))
2815 {
2816 case bfd_mach_z8001: *flagsp = F_Z8001; break;
2817 case bfd_mach_z8002: *flagsp = F_Z8002; break;
2818 default: return FALSE;
2819 }
2820 return TRUE;
2821 #endif
2822
2823 #ifdef I960ROMAGIC
2824 case bfd_arch_i960:
2825
2826 {
2827 unsigned flags;
2828
2829 *magicp = I960ROMAGIC;
2830
2831 switch (bfd_get_mach (abfd))
2832 {
2833 case bfd_mach_i960_core: flags = F_I960CORE; break;
2834 case bfd_mach_i960_kb_sb: flags = F_I960KB; break;
2835 case bfd_mach_i960_mc: flags = F_I960MC; break;
2836 case bfd_mach_i960_xa: flags = F_I960XA; break;
2837 case bfd_mach_i960_ca: flags = F_I960CA; break;
2838 case bfd_mach_i960_ka_sa: flags = F_I960KA; break;
2839 case bfd_mach_i960_jx: flags = F_I960JX; break;
2840 case bfd_mach_i960_hx: flags = F_I960HX; break;
2841 default: return FALSE;
2842 }
2843 *flagsp = flags;
2844 return TRUE;
2845 }
2846 break;
2847 #endif
2848
2849 #ifdef TIC30MAGIC
2850 case bfd_arch_tic30:
2851 *magicp = TIC30MAGIC;
2852 return TRUE;
2853 #endif
2854
2855 #ifdef TICOFF_DEFAULT_MAGIC
2856 case TICOFF_TARGET_ARCH:
2857 /* If there's no indication of which version we want, use the default. */
2858 if (!abfd->xvec )
2859 *magicp = TICOFF_DEFAULT_MAGIC;
2860 else
2861 {
2862 /* We may want to output in a different COFF version. */
2863 switch (abfd->xvec->name[4])
2864 {
2865 case '0':
2866 *magicp = TICOFF0MAGIC;
2867 break;
2868 case '1':
2869 *magicp = TICOFF1MAGIC;
2870 break;
2871 case '2':
2872 *magicp = TICOFF2MAGIC;
2873 break;
2874 default:
2875 return FALSE;
2876 }
2877 }
2878 TICOFF_TARGET_MACHINE_SET (flagsp, bfd_get_mach (abfd));
2879 return TRUE;
2880 #endif
2881
2882 #ifdef TIC80_ARCH_MAGIC
2883 case bfd_arch_tic80:
2884 *magicp = TIC80_ARCH_MAGIC;
2885 return TRUE;
2886 #endif
2887
2888 #ifdef ARMMAGIC
2889 case bfd_arch_arm:
2890 #ifdef ARM_WINCE
2891 * magicp = ARMPEMAGIC;
2892 #else
2893 * magicp = ARMMAGIC;
2894 #endif
2895 * flagsp = 0;
2896 if (APCS_SET (abfd))
2897 {
2898 if (APCS_26_FLAG (abfd))
2899 * flagsp |= F_APCS26;
2900
2901 if (APCS_FLOAT_FLAG (abfd))
2902 * flagsp |= F_APCS_FLOAT;
2903
2904 if (PIC_FLAG (abfd))
2905 * flagsp |= F_PIC;
2906 }
2907 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2908 * flagsp |= F_INTERWORK;
2909 switch (bfd_get_mach (abfd))
2910 {
2911 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2912 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2913 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2914 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2915 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2916 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2917 case bfd_mach_arm_5: * flagsp |= F_ARM_5; break;
2918 /* FIXME: we do not have F_ARM vaues greater than F_ARM_5.
2919 See also the comment in coff_set_arch_mach_hook(). */
2920 case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break;
2921 case bfd_mach_arm_5TE: * flagsp |= F_ARM_5; break;
2922 case bfd_mach_arm_XScale: * flagsp |= F_ARM_5; break;
2923 }
2924 return TRUE;
2925 #endif
2926
2927 #ifdef PPCMAGIC
2928 case bfd_arch_powerpc:
2929 *magicp = PPCMAGIC;
2930 return TRUE;
2931 #endif
2932
2933 #if defined(I386MAGIC) || defined(AMD64MAGIC)
2934 case bfd_arch_i386:
2935 #if defined(I386MAGIC)
2936 *magicp = I386MAGIC;
2937 #endif
2938 #if defined LYNXOS
2939 /* Just overwrite the usual value if we're doing Lynx. */
2940 *magicp = LYNXCOFFMAGIC;
2941 #endif
2942 #if defined AMD64MAGIC
2943 *magicp = AMD64MAGIC;
2944 #endif
2945 return TRUE;
2946 #endif
2947
2948 #ifdef I860MAGIC
2949 case bfd_arch_i860:
2950 *magicp = I860MAGIC;
2951 return TRUE;
2952 #endif
2953
2954 #ifdef IA64MAGIC
2955 case bfd_arch_ia64:
2956 *magicp = IA64MAGIC;
2957 return TRUE;
2958 #endif
2959
2960 #ifdef MC68MAGIC
2961 case bfd_arch_m68k:
2962 #ifdef APOLLOM68KMAGIC
2963 *magicp = APOLLO_COFF_VERSION_NUMBER;
2964 #else
2965 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2966 #ifdef NAMES_HAVE_UNDERSCORE
2967 *magicp = MC68KBCSMAGIC;
2968 #else
2969 *magicp = MC68MAGIC;
2970 #endif
2971 #endif
2972 #ifdef LYNXOS
2973 /* Just overwrite the usual value if we're doing Lynx. */
2974 *magicp = LYNXCOFFMAGIC;
2975 #endif
2976 return TRUE;
2977 #endif
2978
2979 #ifdef MC88MAGIC
2980 case bfd_arch_m88k:
2981 *magicp = MC88OMAGIC;
2982 return TRUE;
2983 #endif
2984
2985 #ifdef H8300MAGIC
2986 case bfd_arch_h8300:
2987 switch (bfd_get_mach (abfd))
2988 {
2989 case bfd_mach_h8300: *magicp = H8300MAGIC; return TRUE;
2990 case bfd_mach_h8300h: *magicp = H8300HMAGIC; return TRUE;
2991 case bfd_mach_h8300s: *magicp = H8300SMAGIC; return TRUE;
2992 case bfd_mach_h8300hn: *magicp = H8300HNMAGIC; return TRUE;
2993 case bfd_mach_h8300sn: *magicp = H8300SNMAGIC; return TRUE;
2994 default: break;
2995 }
2996 break;
2997 #endif
2998
2999 #ifdef SH_ARCH_MAGIC_BIG
3000 case bfd_arch_sh:
3001 #ifdef COFF_IMAGE_WITH_PE
3002 *magicp = SH_ARCH_MAGIC_WINCE;
3003 #else
3004 if (bfd_big_endian (abfd))
3005 *magicp = SH_ARCH_MAGIC_BIG;
3006 else
3007 *magicp = SH_ARCH_MAGIC_LITTLE;
3008 #endif
3009 return TRUE;
3010 #endif
3011
3012 #ifdef MIPS_ARCH_MAGIC_WINCE
3013 case bfd_arch_mips:
3014 *magicp = MIPS_ARCH_MAGIC_WINCE;
3015 return TRUE;
3016 #endif
3017
3018 #ifdef SPARCMAGIC
3019 case bfd_arch_sparc:
3020 *magicp = SPARCMAGIC;
3021 #ifdef LYNXOS
3022 /* Just overwrite the usual value if we're doing Lynx. */
3023 *magicp = LYNXCOFFMAGIC;
3024 #endif
3025 return TRUE;
3026 #endif
3027
3028 #ifdef H8500MAGIC
3029 case bfd_arch_h8500:
3030 *magicp = H8500MAGIC;
3031 return TRUE;
3032 break;
3033 #endif
3034
3035 #ifdef WE32KMAGIC
3036 case bfd_arch_we32k:
3037 *magicp = WE32KMAGIC;
3038 return TRUE;
3039 #endif
3040
3041 #ifdef RS6000COFF_C
3042 case bfd_arch_rs6000:
3043 #ifndef PPCMAGIC
3044 case bfd_arch_powerpc:
3045 #endif
3046 BFD_ASSERT (bfd_get_flavour (abfd) == bfd_target_xcoff_flavour);
3047 *magicp = bfd_xcoff_magic_number (abfd);
3048 return TRUE;
3049 #endif
3050
3051 #ifdef MCOREMAGIC
3052 case bfd_arch_mcore:
3053 * magicp = MCOREMAGIC;
3054 return TRUE;
3055 #endif
3056
3057 #ifdef W65MAGIC
3058 case bfd_arch_w65:
3059 *magicp = W65MAGIC;
3060 return TRUE;
3061 #endif
3062
3063 #ifdef OR32_MAGIC_BIG
3064 case bfd_arch_or32:
3065 if (bfd_big_endian (abfd))
3066 * magicp = OR32_MAGIC_BIG;
3067 else
3068 * magicp = OR32_MAGIC_LITTLE;
3069 return TRUE;
3070 #endif
3071
3072 default: /* Unknown architecture. */
3073 /* Fall through to "return FALSE" below, to avoid
3074 "statement never reached" errors on the one below. */
3075 break;
3076 }
3077
3078 return FALSE;
3079 }
3080
3081 static bfd_boolean
3082 coff_set_arch_mach (bfd * abfd,
3083 enum bfd_architecture arch,
3084 unsigned long machine)
3085 {
3086 unsigned dummy1;
3087 unsigned short dummy2;
3088
3089 if (! bfd_default_set_arch_mach (abfd, arch, machine))
3090 return FALSE;
3091
3092 if (arch != bfd_arch_unknown
3093 && ! coff_set_flags (abfd, &dummy1, &dummy2))
3094 return FALSE; /* We can't represent this type. */
3095
3096 return TRUE; /* We're easy... */
3097 }
3098
3099 #ifdef COFF_IMAGE_WITH_PE
3100
3101 /* This is used to sort sections by VMA, as required by PE image
3102 files. */
3103
3104 static int
3105 sort_by_secaddr (const void * arg1, const void * arg2)
3106 {
3107 const asection *a = *(const asection **) arg1;
3108 const asection *b = *(const asection **) arg2;
3109
3110 if (a->vma < b->vma)
3111 return -1;
3112 else if (a->vma > b->vma)
3113 return 1;
3114
3115 return 0;
3116 }
3117
3118 #endif /* COFF_IMAGE_WITH_PE */
3119
3120 /* Calculate the file position for each section. */
3121
3122 #ifndef I960
3123 #define ALIGN_SECTIONS_IN_FILE
3124 #endif
3125 #if defined(TIC80COFF) || defined(TICOFF)
3126 #undef ALIGN_SECTIONS_IN_FILE
3127 #endif
3128
3129 static bfd_boolean
3130 coff_compute_section_file_positions (bfd * abfd)
3131 {
3132 asection *current;
3133 file_ptr sofar = bfd_coff_filhsz (abfd);
3134 bfd_boolean align_adjust;
3135 int target_index;
3136 #ifdef ALIGN_SECTIONS_IN_FILE
3137 asection *previous = NULL;
3138 file_ptr old_sofar;
3139 #endif
3140
3141 #ifdef COFF_IMAGE_WITH_PE
3142 int page_size;
3143
3144 if (coff_data (abfd)->link_info)
3145 {
3146 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
3147
3148 /* If no file alignment has been set, default to one.
3149 This repairs 'ld -r' for arm-wince-pe target. */
3150 if (page_size == 0)
3151 page_size = 1;
3152 }
3153 else
3154 page_size = PE_DEF_FILE_ALIGNMENT;
3155 #else
3156 #ifdef COFF_PAGE_SIZE
3157 int page_size = COFF_PAGE_SIZE;
3158 #endif
3159 #endif
3160
3161 #ifdef RS6000COFF_C
3162 /* On XCOFF, if we have symbols, set up the .debug section. */
3163 if (bfd_get_symcount (abfd) > 0)
3164 {
3165 bfd_size_type sz;
3166 bfd_size_type i, symcount;
3167 asymbol **symp;
3168
3169 sz = 0;
3170 symcount = bfd_get_symcount (abfd);
3171 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
3172 {
3173 coff_symbol_type *cf;
3174
3175 cf = coff_symbol_from (abfd, *symp);
3176 if (cf != NULL
3177 && cf->native != NULL
3178 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
3179 {
3180 size_t len;
3181
3182 len = strlen (bfd_asymbol_name (*symp));
3183 if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd))
3184 sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd);
3185 }
3186 }
3187 if (sz > 0)
3188 {
3189 asection *dsec;
3190
3191 dsec = bfd_make_section_old_way (abfd, DOT_DEBUG);
3192 if (dsec == NULL)
3193 abort ();
3194 dsec->size = sz;
3195 dsec->flags |= SEC_HAS_CONTENTS;
3196 }
3197 }
3198 #endif
3199
3200 if (bfd_get_start_address (abfd))
3201 /* A start address may have been added to the original file. In this
3202 case it will need an optional header to record it. */
3203 abfd->flags |= EXEC_P;
3204
3205 if (abfd->flags & EXEC_P)
3206 sofar += bfd_coff_aoutsz (abfd);
3207 #ifdef RS6000COFF_C
3208 else if (xcoff_data (abfd)->full_aouthdr)
3209 sofar += bfd_coff_aoutsz (abfd);
3210 else
3211 sofar += SMALL_AOUTSZ;
3212 #endif
3213
3214 sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
3215
3216 #ifdef RS6000COFF_C
3217 /* XCOFF handles overflows in the reloc and line number count fields
3218 by allocating a new section header to hold the correct counts. */
3219 for (current = abfd->sections; current != NULL; current = current->next)
3220 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3221 sofar += bfd_coff_scnhsz (abfd);
3222 #endif
3223
3224 #ifdef COFF_IMAGE_WITH_PE
3225 {
3226 /* PE requires the sections to be in memory order when listed in
3227 the section headers. It also does not like empty loadable
3228 sections. The sections apparently do not have to be in the
3229 right order in the image file itself, but we do need to get the
3230 target_index values right. */
3231
3232 unsigned int count;
3233 asection **section_list;
3234 unsigned int i;
3235 bfd_size_type amt;
3236
3237 #ifdef COFF_PAGE_SIZE
3238 /* Clear D_PAGED if section alignment is smaller than
3239 COFF_PAGE_SIZE. */
3240 if (pe_data (abfd)->pe_opthdr.SectionAlignment < COFF_PAGE_SIZE)
3241 abfd->flags &= ~D_PAGED;
3242 #endif
3243
3244 count = 0;
3245 for (current = abfd->sections; current != NULL; current = current->next)
3246 ++count;
3247
3248 /* We allocate an extra cell to simplify the final loop. */
3249 amt = sizeof (struct asection *) * (count + 1);
3250 section_list = (asection **) bfd_malloc (amt);
3251 if (section_list == NULL)
3252 return FALSE;
3253
3254 i = 0;
3255 for (current = abfd->sections; current != NULL; current = current->next)
3256 {
3257 section_list[i] = current;
3258 ++i;
3259 }
3260 section_list[i] = NULL;
3261
3262 qsort (section_list, count, sizeof (asection *), sort_by_secaddr);
3263
3264 /* Rethread the linked list into sorted order; at the same time,
3265 assign target_index values. */
3266 target_index = 1;
3267 abfd->sections = NULL;
3268 abfd->section_last = NULL;
3269 for (i = 0; i < count; i++)
3270 {
3271 current = section_list[i];
3272 bfd_section_list_append (abfd, current);
3273
3274 /* Later, if the section has zero size, we'll be throwing it
3275 away, so we don't want to number it now. Note that having
3276 a zero size and having real contents are different
3277 concepts: .bss has no contents, but (usually) non-zero
3278 size. */
3279 if (current->size == 0)
3280 {
3281 /* Discard. However, it still might have (valid) symbols
3282 in it, so arbitrarily set it to section 1 (indexing is
3283 1-based here; usually .text). __end__ and other
3284 contents of .endsection really have this happen.
3285 FIXME: This seems somewhat dubious. */
3286 current->target_index = 1;
3287 }
3288 else
3289 current->target_index = target_index++;
3290 }
3291
3292 free (section_list);
3293 }
3294 #else /* ! COFF_IMAGE_WITH_PE */
3295 {
3296 /* Set the target_index field. */
3297 target_index = 1;
3298 for (current = abfd->sections; current != NULL; current = current->next)
3299 current->target_index = target_index++;
3300 }
3301 #endif /* ! COFF_IMAGE_WITH_PE */
3302
3303 if (target_index >= 32768)
3304 {
3305 bfd_set_error (bfd_error_file_too_big);
3306 (*_bfd_error_handler)
3307 (_("%B: too many sections (%d)"), abfd, target_index);
3308 return FALSE;
3309 }
3310
3311 align_adjust = FALSE;
3312 for (current = abfd->sections;
3313 current != NULL;
3314 current = current->next)
3315 {
3316 #ifdef COFF_IMAGE_WITH_PE
3317 /* With PE we have to pad each section to be a multiple of its
3318 page size too, and remember both sizes. */
3319 if (coff_section_data (abfd, current) == NULL)
3320 {
3321 bfd_size_type amt = sizeof (struct coff_section_tdata);
3322
3323 current->used_by_bfd = bfd_zalloc (abfd, amt);
3324 if (current->used_by_bfd == NULL)
3325 return FALSE;
3326 }
3327 if (pei_section_data (abfd, current) == NULL)
3328 {
3329 bfd_size_type amt = sizeof (struct pei_section_tdata);
3330
3331 coff_section_data (abfd, current)->tdata = bfd_zalloc (abfd, amt);
3332 if (coff_section_data (abfd, current)->tdata == NULL)
3333 return FALSE;
3334 }
3335 if (pei_section_data (abfd, current)->virt_size == 0)
3336 pei_section_data (abfd, current)->virt_size = current->size;
3337 #endif
3338
3339 /* Only deal with sections which have contents. */
3340 if (!(current->flags & SEC_HAS_CONTENTS))
3341 continue;
3342
3343 current->rawsize = current->size;
3344
3345 #ifdef COFF_IMAGE_WITH_PE
3346 /* Make sure we skip empty sections in a PE image. */
3347 if (current->size == 0)
3348 continue;
3349 #endif
3350
3351 /* Align the sections in the file to the same boundary on
3352 which they are aligned in virtual memory. I960 doesn't
3353 do this (FIXME) so we can stay in sync with Intel. 960
3354 doesn't yet page from files... */
3355 #ifdef ALIGN_SECTIONS_IN_FILE
3356 if ((abfd->flags & EXEC_P) != 0)
3357 {
3358 /* Make sure this section is aligned on the right boundary - by
3359 padding the previous section up if necessary. */
3360 old_sofar = sofar;
3361
3362 #ifdef RS6000COFF_C
3363 /* AIX loader checks the text section alignment of (vma - filepos)
3364 So even though the filepos may be aligned wrt the o_algntext, for
3365 AIX executables, this check fails. This shows up when a native
3366 AIX executable is stripped with gnu strip because the default vma
3367 of native is 0x10000150 but default for gnu is 0x10000140. Gnu
3368 stripped gnu excutable passes this check because the filepos is
3369 0x0140. This problem also show up with 64 bit shared objects. The
3370 data section must also be aligned. */
3371 if (!strcmp (current->name, _TEXT)
3372 || !strcmp (current->name, _DATA))
3373 {
3374 bfd_vma pad;
3375 bfd_vma align;
3376
3377 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3378
3379 align = 1 << current->alignment_power;
3380 pad = abs (current->vma - sofar) % align;
3381
3382 if (pad)
3383 {
3384 pad = align - pad;
3385 sofar += pad;
3386 }
3387 }
3388 else
3389 #else
3390 {
3391 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3392 }
3393 #endif
3394 if (previous != NULL)
3395 previous->size += sofar - old_sofar;
3396 }
3397
3398 #endif
3399
3400 /* In demand paged files the low order bits of the file offset
3401 must match the low order bits of the virtual address. */
3402 #ifdef COFF_PAGE_SIZE
3403 if ((abfd->flags & D_PAGED) != 0
3404 && (current->flags & SEC_ALLOC) != 0)
3405 sofar += (current->vma - (bfd_vma) sofar) % page_size;
3406 #endif
3407 current->filepos = sofar;
3408
3409 #ifdef COFF_IMAGE_WITH_PE
3410 /* Set the padded size. */
3411 current->size = (current->size + page_size - 1) & -page_size;
3412 #endif
3413
3414 sofar += current->size;
3415
3416 #ifdef ALIGN_SECTIONS_IN_FILE
3417 /* Make sure that this section is of the right size too. */
3418 if ((abfd->flags & EXEC_P) == 0)
3419 {
3420 bfd_size_type old_size;
3421
3422 old_size = current->size;
3423 current->size = BFD_ALIGN (current->size,
3424 1 << current->alignment_power);
3425 align_adjust = current->size != old_size;
3426 sofar += current->size - old_size;
3427 }
3428 else
3429 {
3430 old_sofar = sofar;
3431 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3432 align_adjust = sofar != old_sofar;
3433 current->size += sofar - old_sofar;
3434 }
3435 #endif
3436
3437 #ifdef COFF_IMAGE_WITH_PE
3438 /* For PE we need to make sure we pad out to the aligned
3439 size, in case the caller only writes out data to the
3440 unaligned size. */
3441 if (pei_section_data (abfd, current)->virt_size < current->size)
3442 align_adjust = TRUE;
3443 #endif
3444
3445 #ifdef _LIB
3446 /* Force .lib sections to start at zero. The vma is then
3447 incremented in coff_set_section_contents. This is right for
3448 SVR3.2. */
3449 if (strcmp (current->name, _LIB) == 0)
3450 bfd_set_section_vma (abfd, current, 0);
3451 #endif
3452
3453 #ifdef ALIGN_SECTIONS_IN_FILE
3454 previous = current;
3455 #endif
3456 }
3457
3458 /* It is now safe to write to the output file. If we needed an
3459 alignment adjustment for the last section, then make sure that
3460 there is a byte at offset sofar. If there are no symbols and no
3461 relocs, then nothing follows the last section. If we don't force
3462 the last byte out, then the file may appear to be truncated. */
3463 if (align_adjust)
3464 {
3465 bfd_byte b;
3466
3467 b = 0;
3468 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
3469 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
3470 return FALSE;
3471 }
3472
3473 /* Make sure the relocations are aligned. We don't need to make
3474 sure that this byte exists, because it will only matter if there
3475 really are relocs. */
3476 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
3477
3478 obj_relocbase (abfd) = sofar;
3479 abfd->output_has_begun = TRUE;
3480
3481 return TRUE;
3482 }
3483
3484 #ifdef COFF_IMAGE_WITH_PE
3485
3486 static unsigned int pelength;
3487 static unsigned int peheader;
3488
3489 static bfd_boolean
3490 coff_read_word (bfd *abfd, unsigned int *value)
3491 {
3492 unsigned char b[2];
3493 int status;
3494
3495 status = bfd_bread (b, (bfd_size_type) 2, abfd);
3496 if (status < 1)
3497 {
3498 *value = 0;
3499 return FALSE;
3500 }
3501
3502 if (status == 1)
3503 *value = (unsigned int) b[0];
3504 else
3505 *value = (unsigned int) (b[0] + (b[1] << 8));
3506
3507 pelength += (unsigned int) status;
3508
3509 return TRUE;
3510 }
3511
3512 static unsigned int
3513 coff_compute_checksum (bfd *abfd)
3514 {
3515 bfd_boolean more_data;
3516 file_ptr filepos;
3517 unsigned int value;
3518 unsigned int total;
3519
3520 total = 0;
3521 pelength = 0;
3522 filepos = (file_ptr) 0;
3523
3524 do
3525 {
3526 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
3527 return 0;
3528
3529 more_data = coff_read_word (abfd, &value);
3530 total += value;
3531 total = 0xffff & (total + (total >> 0x10));
3532 filepos += 2;
3533 }
3534 while (more_data);
3535
3536 return (0xffff & (total + (total >> 0x10)));
3537 }
3538
3539 static bfd_boolean
3540 coff_apply_checksum (bfd *abfd)
3541 {
3542 unsigned int computed;
3543 unsigned int checksum = 0;
3544
3545 if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0)
3546 return FALSE;
3547
3548 if (!coff_read_word (abfd, &peheader))
3549 return FALSE;
3550
3551 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3552 return FALSE;
3553
3554 checksum = 0;
3555 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3556
3557 if (bfd_seek (abfd, peheader, SEEK_SET) != 0)
3558 return FALSE;
3559
3560 computed = coff_compute_checksum (abfd);
3561
3562 checksum = computed + pelength;
3563
3564 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3565 return FALSE;
3566
3567 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3568
3569 return TRUE;
3570 }
3571
3572 #endif /* COFF_IMAGE_WITH_PE */
3573
3574 static bfd_boolean
3575 coff_write_object_contents (bfd * abfd)
3576 {
3577 asection *current;
3578 bfd_boolean hasrelocs = FALSE;
3579 bfd_boolean haslinno = FALSE;
3580 #ifdef COFF_IMAGE_WITH_PE
3581 bfd_boolean hasdebug = FALSE;
3582 #endif
3583 file_ptr scn_base;
3584 file_ptr reloc_base;
3585 file_ptr lineno_base;
3586 file_ptr sym_base;
3587 unsigned long reloc_size = 0, reloc_count = 0;
3588 unsigned long lnno_size = 0;
3589 bfd_boolean long_section_names;
3590 asection *text_sec = NULL;
3591 asection *data_sec = NULL;
3592 asection *bss_sec = NULL;
3593 struct internal_filehdr internal_f;
3594 struct internal_aouthdr internal_a;
3595 #ifdef COFF_LONG_SECTION_NAMES
3596 size_t string_size = STRING_SIZE_SIZE;
3597 #endif
3598
3599 bfd_set_error (bfd_error_system_call);
3600
3601 /* Make a pass through the symbol table to count line number entries and
3602 put them into the correct asections. */
3603 lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd);
3604
3605 if (! abfd->output_has_begun)
3606 {
3607 if (! coff_compute_section_file_positions (abfd))
3608 return FALSE;
3609 }
3610
3611 reloc_base = obj_relocbase (abfd);
3612
3613 /* Work out the size of the reloc and linno areas. */
3614
3615 for (current = abfd->sections; current != NULL; current =
3616 current->next)
3617 {
3618 #ifdef COFF_WITH_PE
3619 /* We store the actual reloc count in the first reloc's addr. */
3620 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3621 reloc_count ++;
3622 #endif
3623 reloc_count += current->reloc_count;
3624 }
3625
3626 reloc_size = reloc_count * bfd_coff_relsz (abfd);
3627
3628 lineno_base = reloc_base + reloc_size;
3629 sym_base = lineno_base + lnno_size;
3630
3631 /* Indicate in each section->line_filepos its actual file address. */
3632 for (current = abfd->sections; current != NULL; current =
3633 current->next)
3634 {
3635 if (current->lineno_count)
3636 {
3637 current->line_filepos = lineno_base;
3638 current->moving_line_filepos = lineno_base;
3639 lineno_base += current->lineno_count * bfd_coff_linesz (abfd);
3640 }
3641 else
3642 current->line_filepos = 0;
3643
3644 if (current->reloc_count)
3645 {
3646 current->rel_filepos = reloc_base;
3647 reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
3648 #ifdef COFF_WITH_PE
3649 /* Extra reloc to hold real count. */
3650 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3651 reloc_base += bfd_coff_relsz (abfd);
3652 #endif
3653 }
3654 else
3655 current->rel_filepos = 0;
3656 }
3657
3658 /* Write section headers to the file. */
3659 internal_f.f_nscns = 0;
3660
3661 if ((abfd->flags & EXEC_P) != 0)
3662 scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
3663 else
3664 {
3665 scn_base = bfd_coff_filhsz (abfd);
3666 #ifdef RS6000COFF_C
3667 #ifndef XCOFF64
3668 if (xcoff_data (abfd)->full_aouthdr)
3669 scn_base += bfd_coff_aoutsz (abfd);
3670 else
3671 scn_base += SMALL_AOUTSZ;
3672 #endif
3673 #endif
3674 }
3675
3676 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
3677 return FALSE;
3678
3679 long_section_names = FALSE;
3680 for (current = abfd->sections;
3681 current != NULL;
3682 current = current->next)
3683 {
3684 struct internal_scnhdr section;
3685 #ifdef COFF_IMAGE_WITH_PE
3686 bfd_boolean is_reloc_section = FALSE;
3687
3688 if (strcmp (current->name, DOT_RELOC) == 0)
3689 {
3690 is_reloc_section = TRUE;
3691 hasrelocs = TRUE;
3692 pe_data (abfd)->has_reloc_section = 1;
3693 }
3694 #endif
3695
3696 internal_f.f_nscns++;
3697
3698 strncpy (section.s_name, current->name, SCNNMLEN);
3699
3700 #ifdef COFF_LONG_SECTION_NAMES
3701 /* Handle long section names as in PE. This must be compatible
3702 with the code in coff_write_symbols and _bfd_coff_final_link. */
3703 if (bfd_coff_long_section_names (abfd))
3704 {
3705 size_t len;
3706
3707 len = strlen (current->name);
3708 if (len > SCNNMLEN)
3709 {
3710 /* The s_name field is defined to be NUL-padded but need not be
3711 NUL-terminated. We use a temporary buffer so that we can still
3712 sprintf all eight chars without splatting a terminating NUL
3713 over the first byte of the following member (s_paddr). */
3714 char s_name_buf[SCNNMLEN + 1];
3715
3716 /* An inherent limitation of the /nnnnnnn notation used to indicate
3717 the offset of the long name in the string table is that we
3718 cannot address entries beyone the ten million byte boundary. */
3719 if (string_size >= 10000000)
3720 {
3721 bfd_set_error (bfd_error_file_too_big);
3722 (*_bfd_error_handler)
3723 (_("%B: section %s: string table overflow at offset %ld"),
3724 abfd, current->name, string_size);
3725 return FALSE;
3726 }
3727
3728 /* snprintf not strictly necessary now we've verified the value
3729 has less than eight ASCII digits, but never mind. */
3730 snprintf (s_name_buf, SCNNMLEN + 1, "/%lu", (unsigned long) string_size);
3731 /* Then strncpy takes care of any padding for us. */
3732 strncpy (section.s_name, s_name_buf, SCNNMLEN);
3733 string_size += len + 1;
3734 long_section_names = TRUE;
3735 }
3736 }
3737 #endif
3738
3739 #ifdef _LIB
3740 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3741 Ian Taylor <ian@cygnus.com>. */
3742 if (strcmp (current->name, _LIB) == 0)
3743 section.s_vaddr = 0;
3744 else
3745 #endif
3746 section.s_vaddr = current->vma;
3747 section.s_paddr = current->lma;
3748 section.s_size = current->size;
3749 #ifdef coff_get_section_load_page
3750 section.s_page = coff_get_section_load_page (current);
3751 #else
3752 section.s_page = 0;
3753 #endif
3754
3755 #ifdef COFF_WITH_PE
3756 section.s_paddr = 0;
3757 #endif
3758 #ifdef COFF_IMAGE_WITH_PE
3759 /* Reminder: s_paddr holds the virtual size of the section. */
3760 if (coff_section_data (abfd, current) != NULL
3761 && pei_section_data (abfd, current) != NULL)
3762 section.s_paddr = pei_section_data (abfd, current)->virt_size;
3763 else
3764 section.s_paddr = 0;
3765 #endif
3766
3767 /* If this section has no size or is unloadable then the scnptr
3768 will be 0 too. */
3769 if (current->size == 0
3770 || (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
3771 section.s_scnptr = 0;
3772 else
3773 section.s_scnptr = current->filepos;
3774
3775 section.s_relptr = current->rel_filepos;
3776 section.s_lnnoptr = current->line_filepos;
3777 section.s_nreloc = current->reloc_count;
3778 section.s_nlnno = current->lineno_count;
3779 #ifndef COFF_IMAGE_WITH_PE
3780 /* In PEI, relocs come in the .reloc section. */
3781 if (current->reloc_count != 0)
3782 hasrelocs = TRUE;
3783 #endif
3784 if (current->lineno_count != 0)
3785 haslinno = TRUE;
3786 #ifdef COFF_IMAGE_WITH_PE
3787 if ((current->flags & SEC_DEBUGGING) != 0
3788 && ! is_reloc_section)
3789 hasdebug = TRUE;
3790 #endif
3791
3792 #ifdef RS6000COFF_C
3793 #ifndef XCOFF64
3794 /* Indicate the use of an XCOFF overflow section header. */
3795 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3796 {
3797 section.s_nreloc = 0xffff;
3798 section.s_nlnno = 0xffff;
3799 }
3800 #endif
3801 #endif
3802
3803 section.s_flags = sec_to_styp_flags (current->name, current->flags);
3804
3805 if (!strcmp (current->name, _TEXT))
3806 text_sec = current;
3807 else if (!strcmp (current->name, _DATA))
3808 data_sec = current;
3809 else if (!strcmp (current->name, _BSS))
3810 bss_sec = current;
3811
3812 #ifdef I960
3813 section.s_align = (current->alignment_power
3814 ? 1 << current->alignment_power
3815 : 0);
3816 #endif
3817 #ifdef TIC80COFF
3818 /* TI COFF puts the alignment power in bits 8-11 of the flags. */
3819 section.s_flags |= (current->alignment_power & 0xF) << 8;
3820 #endif
3821 #ifdef COFF_ENCODE_ALIGNMENT
3822 COFF_ENCODE_ALIGNMENT(section, current->alignment_power);
3823 #endif
3824
3825 #ifdef COFF_IMAGE_WITH_PE
3826 /* Suppress output of the sections if they are null. ld
3827 includes the bss and data sections even if there is no size
3828 assigned to them. NT loader doesn't like it if these section
3829 headers are included if the sections themselves are not
3830 needed. See also coff_compute_section_file_positions. */
3831 if (section.s_size == 0)
3832 internal_f.f_nscns--;
3833 else
3834 #endif
3835 {
3836 SCNHDR buff;
3837 bfd_size_type amt = bfd_coff_scnhsz (abfd);
3838
3839 if (coff_swap_scnhdr_out (abfd, &section, &buff) == 0
3840 || bfd_bwrite (& buff, amt, abfd) != amt)
3841 return FALSE;
3842 }
3843
3844 #ifdef COFF_WITH_PE
3845 /* PE stores COMDAT section information in the symbol table. If
3846 this section is supposed to have some COMDAT info, track down
3847 the symbol in the symbol table and modify it. */
3848 if ((current->flags & SEC_LINK_ONCE) != 0)
3849 {
3850 unsigned int i, count;
3851 asymbol **psym;
3852 coff_symbol_type *csym = NULL;
3853 asymbol **psymsec;
3854
3855 psymsec = NULL;
3856 count = bfd_get_symcount (abfd);
3857 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
3858 {
3859 if ((*psym)->section != current)
3860 continue;
3861
3862 /* Remember the location of the first symbol in this
3863 section. */
3864 if (psymsec == NULL)
3865 psymsec = psym;
3866
3867 /* See if this is the section symbol. */
3868 if (strcmp ((*psym)->name, current->name) == 0)
3869 {
3870 csym = coff_symbol_from (abfd, *psym);
3871 if (csym == NULL
3872 || csym->native == NULL
3873 || csym->native->u.syment.n_numaux < 1
3874 || csym->native->u.syment.n_sclass != C_STAT
3875 || csym->native->u.syment.n_type != T_NULL)
3876 continue;
3877
3878 /* Here *PSYM is the section symbol for CURRENT. */
3879
3880 break;
3881 }
3882 }
3883
3884 /* Did we find it?
3885 Note that we might not if we're converting the file from
3886 some other object file format. */
3887 if (i < count)
3888 {
3889 combined_entry_type *aux;
3890
3891 /* We don't touch the x_checksum field. The
3892 x_associated field is not currently supported. */
3893
3894 aux = csym->native + 1;
3895 switch (current->flags & SEC_LINK_DUPLICATES)
3896 {
3897 case SEC_LINK_DUPLICATES_DISCARD:
3898 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
3899 break;
3900
3901 case SEC_LINK_DUPLICATES_ONE_ONLY:
3902 aux->u.auxent.x_scn.x_comdat =
3903 IMAGE_COMDAT_SELECT_NODUPLICATES;
3904 break;
3905
3906 case SEC_LINK_DUPLICATES_SAME_SIZE:
3907 aux->u.auxent.x_scn.x_comdat =
3908 IMAGE_COMDAT_SELECT_SAME_SIZE;
3909 break;
3910
3911 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
3912 aux->u.auxent.x_scn.x_comdat =
3913 IMAGE_COMDAT_SELECT_EXACT_MATCH;
3914 break;
3915 }
3916
3917 /* The COMDAT symbol must be the first symbol from this
3918 section in the symbol table. In order to make this
3919 work, we move the COMDAT symbol before the first
3920 symbol we found in the search above. It's OK to
3921 rearrange the symbol table at this point, because
3922 coff_renumber_symbols is going to rearrange it
3923 further and fix up all the aux entries. */
3924 if (psym != psymsec)
3925 {
3926 asymbol *hold;
3927 asymbol **pcopy;
3928
3929 hold = *psym;
3930 for (pcopy = psym; pcopy > psymsec; pcopy--)
3931 pcopy[0] = pcopy[-1];
3932 *psymsec = hold;
3933 }
3934 }
3935 }
3936 #endif /* COFF_WITH_PE */
3937 }
3938
3939 #ifdef RS6000COFF_C
3940 #ifndef XCOFF64
3941 /* XCOFF handles overflows in the reloc and line number count fields
3942 by creating a new section header to hold the correct values. */
3943 for (current = abfd->sections; current != NULL; current = current->next)
3944 {
3945 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3946 {
3947 struct internal_scnhdr scnhdr;
3948 SCNHDR buff;
3949 bfd_size_type amt;
3950
3951 internal_f.f_nscns++;
3952 strncpy (&(scnhdr.s_name[0]), current->name, 8);
3953 scnhdr.s_paddr = current->reloc_count;
3954 scnhdr.s_vaddr = current->lineno_count;
3955 scnhdr.s_size = 0;
3956 scnhdr.s_scnptr = 0;
3957 scnhdr.s_relptr = current->rel_filepos;
3958 scnhdr.s_lnnoptr = current->line_filepos;
3959 scnhdr.s_nreloc = current->target_index;
3960 scnhdr.s_nlnno = current->target_index;
3961 scnhdr.s_flags = STYP_OVRFLO;
3962 amt = bfd_coff_scnhsz (abfd);
3963 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
3964 || bfd_bwrite (& buff, amt, abfd) != amt)
3965 return FALSE;
3966 }
3967 }
3968 #endif
3969 #endif
3970
3971 /* OK, now set up the filehdr... */
3972
3973 /* Don't include the internal abs section in the section count */
3974
3975 /* We will NOT put a fucking timestamp in the header here. Every time you
3976 put it back, I will come in and take it out again. I'm sorry. This
3977 field does not belong here. We fill it with a 0 so it compares the
3978 same but is not a reasonable time. -- gnu@cygnus.com */
3979 internal_f.f_timdat = 0;
3980 internal_f.f_flags = 0;
3981
3982 if (abfd->flags & EXEC_P)
3983 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3984 else
3985 {
3986 internal_f.f_opthdr = 0;
3987 #ifdef RS6000COFF_C
3988 #ifndef XCOFF64
3989 if (xcoff_data (abfd)->full_aouthdr)
3990 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3991 else
3992 internal_f.f_opthdr = SMALL_AOUTSZ;
3993 #endif
3994 #endif
3995 }
3996
3997 if (!hasrelocs)
3998 internal_f.f_flags |= F_RELFLG;
3999 if (!haslinno)
4000 internal_f.f_flags |= F_LNNO;
4001 if (abfd->flags & EXEC_P)
4002 internal_f.f_flags |= F_EXEC;
4003 #ifdef COFF_IMAGE_WITH_PE
4004 if (! hasdebug)
4005 internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED;
4006 if (pe_data (abfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE)
4007 internal_f.f_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
4008 #endif
4009
4010 #ifndef COFF_WITH_pex64
4011 #ifdef COFF_WITH_PE
4012 internal_f.f_flags |= IMAGE_FILE_32BIT_MACHINE;
4013 #else
4014 if (bfd_little_endian (abfd))
4015 internal_f.f_flags |= F_AR32WR;
4016 else
4017 internal_f.f_flags |= F_AR32W;
4018 #endif
4019 #endif
4020
4021 #ifdef TI_TARGET_ID
4022 /* Target id is used in TI COFF v1 and later; COFF0 won't use this field,
4023 but it doesn't hurt to set it internally. */
4024 internal_f.f_target_id = TI_TARGET_ID;
4025 #endif
4026 #ifdef TIC80_TARGET_ID
4027 internal_f.f_target_id = TIC80_TARGET_ID;
4028 #endif
4029
4030 /* FIXME, should do something about the other byte orders and
4031 architectures. */
4032
4033 #ifdef RS6000COFF_C
4034 if ((abfd->flags & DYNAMIC) != 0)
4035 internal_f.f_flags |= F_SHROBJ;
4036 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
4037 internal_f.f_flags |= F_DYNLOAD;
4038 #endif
4039
4040 memset (&internal_a, 0, sizeof internal_a);
4041
4042 /* Set up architecture-dependent stuff. */
4043 {
4044 unsigned int magic = 0;
4045 unsigned short flags = 0;
4046
4047 coff_set_flags (abfd, &magic, &flags);
4048 internal_f.f_magic = magic;
4049 internal_f.f_flags |= flags;
4050 /* ...and the "opt"hdr... */
4051
4052 #ifdef TICOFF_AOUT_MAGIC
4053 internal_a.magic = TICOFF_AOUT_MAGIC;
4054 #define __A_MAGIC_SET__
4055 #endif
4056 #ifdef TIC80COFF
4057 internal_a.magic = TIC80_ARCH_MAGIC;
4058 #define __A_MAGIC_SET__
4059 #endif /* TIC80 */
4060 #ifdef I860
4061 /* FIXME: What are the a.out magic numbers for the i860? */
4062 internal_a.magic = 0;
4063 #define __A_MAGIC_SET__
4064 #endif /* I860 */
4065 #ifdef I960
4066 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
4067 #define __A_MAGIC_SET__
4068 #endif /* I960 */
4069 #if M88
4070 #define __A_MAGIC_SET__
4071 internal_a.magic = PAGEMAGICBCS;
4072 #endif /* M88 */
4073
4074 #if APOLLO_M68
4075 #define __A_MAGIC_SET__
4076 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
4077 #endif
4078
4079 #if defined(M68) || defined(WE32K) || defined(M68K)
4080 #define __A_MAGIC_SET__
4081 #if defined(LYNXOS)
4082 internal_a.magic = LYNXCOFFMAGIC;
4083 #else
4084 #if defined(TARG_AUX)
4085 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
4086 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
4087 PAGEMAGICEXECSWAPPED);
4088 #else
4089 #if defined (PAGEMAGICPEXECPAGED)
4090 internal_a.magic = PAGEMAGICPEXECPAGED;
4091 #endif
4092 #endif /* TARG_AUX */
4093 #endif /* LYNXOS */
4094 #endif /* M68 || WE32K || M68K */
4095
4096 #if defined(ARM)
4097 #define __A_MAGIC_SET__
4098 internal_a.magic = ZMAGIC;
4099 #endif
4100
4101 #if defined(PPC_PE)
4102 #define __A_MAGIC_SET__
4103 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
4104 #endif
4105
4106 #if defined MCORE_PE
4107 #define __A_MAGIC_SET__
4108 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
4109 #endif
4110
4111 #if defined(I386)
4112 #define __A_MAGIC_SET__
4113 #if defined LYNXOS
4114 internal_a.magic = LYNXCOFFMAGIC;
4115 #elif defined AMD64
4116 internal_a.magic = IMAGE_NT_OPTIONAL_HDR64_MAGIC;
4117 #else
4118 internal_a.magic = ZMAGIC;
4119 #endif
4120 #endif /* I386 */
4121
4122 #if defined(IA64)
4123 #define __A_MAGIC_SET__
4124 internal_a.magic = PE32PMAGIC;
4125 #endif /* IA64 */
4126
4127 #if defined(SPARC)
4128 #define __A_MAGIC_SET__
4129 #if defined(LYNXOS)
4130 internal_a.magic = LYNXCOFFMAGIC;
4131 #endif /* LYNXOS */
4132 #endif /* SPARC */
4133
4134 #ifdef RS6000COFF_C
4135 #define __A_MAGIC_SET__
4136 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
4137 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
4138 RS6K_AOUTHDR_OMAGIC;
4139 #endif
4140
4141 #if defined(SH) && defined(COFF_WITH_PE)
4142 #define __A_MAGIC_SET__
4143 internal_a.magic = SH_PE_MAGIC;
4144 #endif
4145
4146 #if defined(MIPS) && defined(COFF_WITH_PE)
4147 #define __A_MAGIC_SET__
4148 internal_a.magic = MIPS_PE_MAGIC;
4149 #endif
4150
4151 #ifdef OR32
4152 #define __A_MAGIC_SET__
4153 internal_a.magic = NMAGIC; /* Assume separate i/d. */
4154 #endif
4155
4156 #ifndef __A_MAGIC_SET__
4157 #include "Your aouthdr magic number is not being set!"
4158 #else
4159 #undef __A_MAGIC_SET__
4160 #endif
4161 }
4162
4163 /* FIXME: Does anybody ever set this to another value? */
4164 internal_a.vstamp = 0;
4165
4166 /* Now should write relocs, strings, syms. */
4167 obj_sym_filepos (abfd) = sym_base;
4168
4169 if (bfd_get_symcount (abfd) != 0)
4170 {
4171 int firstundef;
4172
4173 if (!coff_renumber_symbols (abfd, &firstundef))
4174 return FALSE;
4175 coff_mangle_symbols (abfd);
4176 if (! coff_write_symbols (abfd))
4177 return FALSE;
4178 if (! coff_write_linenumbers (abfd))
4179 return FALSE;
4180 if (! coff_write_relocs (abfd, firstundef))
4181 return FALSE;
4182 }
4183 #ifdef COFF_LONG_SECTION_NAMES
4184 else if (long_section_names && ! obj_coff_strings_written (abfd))
4185 {
4186 /* If we have long section names we have to write out the string
4187 table even if there are no symbols. */
4188 if (! coff_write_symbols (abfd))
4189 return FALSE;
4190 }
4191 #endif
4192 #ifdef COFF_IMAGE_WITH_PE
4193 #ifdef PPC_PE
4194 else if ((abfd->flags & EXEC_P) != 0)
4195 {
4196 bfd_byte b;
4197
4198 /* PowerPC PE appears to require that all executable files be
4199 rounded up to the page size. */
4200 b = 0;
4201 if (bfd_seek (abfd,
4202 (file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
4203 SEEK_SET) != 0
4204 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
4205 return FALSE;
4206 }
4207 #endif
4208 #endif
4209
4210 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
4211 backend linker, and obj_raw_syment_count is not valid until after
4212 coff_write_symbols is called. */
4213 if (obj_raw_syment_count (abfd) != 0)
4214 {
4215 internal_f.f_symptr = sym_base;
4216 #ifdef RS6000COFF_C
4217 /* AIX appears to require that F_RELFLG not be set if there are
4218 local symbols but no relocations. */
4219 internal_f.f_flags &=~ F_RELFLG;
4220 #endif
4221 }
4222 else
4223 {
4224 if (long_section_names)
4225 internal_f.f_symptr = sym_base;
4226 else
4227 internal_f.f_symptr = 0;
4228 internal_f.f_flags |= F_LSYMS;
4229 }
4230
4231 if (text_sec)
4232 {
4233 internal_a.tsize = text_sec->size;
4234 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
4235 }
4236 if (data_sec)
4237 {
4238 internal_a.dsize = data_sec->size;
4239 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
4240 }
4241 if (bss_sec)
4242 {
4243 internal_a.bsize = bss_sec->size;
4244 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
4245 internal_a.data_start = bss_sec->vma;
4246 }
4247
4248 internal_a.entry = bfd_get_start_address (abfd);
4249 internal_f.f_nsyms = obj_raw_syment_count (abfd);
4250
4251 #ifdef RS6000COFF_C
4252 if (xcoff_data (abfd)->full_aouthdr)
4253 {
4254 bfd_vma toc;
4255 asection *loader_sec;
4256
4257 internal_a.vstamp = 1;
4258
4259 internal_a.o_snentry = xcoff_data (abfd)->snentry;
4260 if (internal_a.o_snentry == 0)
4261 internal_a.entry = (bfd_vma) -1;
4262
4263 if (text_sec != NULL)
4264 {
4265 internal_a.o_sntext = text_sec->target_index;
4266 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
4267 }
4268 else
4269 {
4270 internal_a.o_sntext = 0;
4271 internal_a.o_algntext = 0;
4272 }
4273 if (data_sec != NULL)
4274 {
4275 internal_a.o_sndata = data_sec->target_index;
4276 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
4277 }
4278 else
4279 {
4280 internal_a.o_sndata = 0;
4281 internal_a.o_algndata = 0;
4282 }
4283 loader_sec = bfd_get_section_by_name (abfd, ".loader");
4284 if (loader_sec != NULL)
4285 internal_a.o_snloader = loader_sec->target_index;
4286 else
4287 internal_a.o_snloader = 0;
4288 if (bss_sec != NULL)
4289 internal_a.o_snbss = bss_sec->target_index;
4290 else
4291 internal_a.o_snbss = 0;
4292
4293 toc = xcoff_data (abfd)->toc;
4294 internal_a.o_toc = toc;
4295 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
4296
4297 internal_a.o_modtype = xcoff_data (abfd)->modtype;
4298 if (xcoff_data (abfd)->cputype != -1)
4299 internal_a.o_cputype = xcoff_data (abfd)->cputype;
4300 else
4301 {
4302 switch (bfd_get_arch (abfd))
4303 {
4304 case bfd_arch_rs6000:
4305 internal_a.o_cputype = 4;
4306 break;
4307 case bfd_arch_powerpc:
4308 if (bfd_get_mach (abfd) == bfd_mach_ppc)
4309 internal_a.o_cputype = 3;
4310 else
4311 internal_a.o_cputype = 1;
4312 break;
4313 default:
4314 abort ();
4315 }
4316 }
4317 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
4318 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
4319 }
4320 #endif
4321
4322 /* Now write them. */
4323 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
4324 return FALSE;
4325
4326 {
4327 char * buff;
4328 bfd_size_type amount = bfd_coff_filhsz (abfd);
4329
4330 buff = (char *) bfd_malloc (amount);
4331 if (buff == NULL)
4332 return FALSE;
4333
4334 bfd_coff_swap_filehdr_out (abfd, & internal_f, buff);
4335 amount = bfd_bwrite (buff, amount, abfd);
4336
4337 free (buff);
4338
4339 if (amount != bfd_coff_filhsz (abfd))
4340 return FALSE;
4341 }
4342
4343 if (abfd->flags & EXEC_P)
4344 {
4345 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
4346 include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)). */
4347 char * buff;
4348 bfd_size_type amount = bfd_coff_aoutsz (abfd);
4349
4350 buff = (char *) bfd_malloc (amount);
4351 if (buff == NULL)
4352 return FALSE;
4353
4354 coff_swap_aouthdr_out (abfd, & internal_a, buff);
4355 amount = bfd_bwrite (buff, amount, abfd);
4356
4357 free (buff);
4358
4359 if (amount != bfd_coff_aoutsz (abfd))
4360 return FALSE;
4361
4362 #ifdef COFF_IMAGE_WITH_PE
4363 if (! coff_apply_checksum (abfd))
4364 return FALSE;
4365 #endif
4366 }
4367 #ifdef RS6000COFF_C
4368 else
4369 {
4370 AOUTHDR buff;
4371 size_t size;
4372
4373 /* XCOFF seems to always write at least a small a.out header. */
4374 coff_swap_aouthdr_out (abfd, & internal_a, & buff);
4375 if (xcoff_data (abfd)->full_aouthdr)
4376 size = bfd_coff_aoutsz (abfd);
4377 else
4378 size = SMALL_AOUTSZ;
4379 if (bfd_bwrite (& buff, (bfd_size_type) size, abfd) != size)
4380 return FALSE;
4381 }
4382 #endif
4383
4384 return TRUE;
4385 }
4386
4387 static bfd_boolean
4388 coff_set_section_contents (bfd * abfd,
4389 sec_ptr section,
4390 const void * location,
4391 file_ptr offset,
4392 bfd_size_type count)
4393 {
4394 if (! abfd->output_has_begun) /* Set by bfd.c handler. */
4395 {
4396 if (! coff_compute_section_file_positions (abfd))
4397 return FALSE;
4398 }
4399
4400 #if defined(_LIB) && !defined(TARG_AUX)
4401 /* The physical address field of a .lib section is used to hold the
4402 number of shared libraries in the section. This code counts the
4403 number of sections being written, and increments the lma field
4404 with the number.
4405
4406 I have found no documentation on the contents of this section.
4407 Experimentation indicates that the section contains zero or more
4408 records, each of which has the following structure:
4409
4410 - a (four byte) word holding the length of this record, in words,
4411 - a word that always seems to be set to "2",
4412 - the path to a shared library, null-terminated and then padded
4413 to a whole word boundary.
4414
4415 bfd_assert calls have been added to alert if an attempt is made
4416 to write a section which doesn't follow these assumptions. The
4417 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4418 <robertl@arnet.com> (Thanks!).
4419
4420 Gvran Uddeborg <gvran@uddeborg.pp.se>. */
4421 if (strcmp (section->name, _LIB) == 0)
4422 {
4423 bfd_byte *rec, *recend;
4424
4425 rec = (bfd_byte *) location;
4426 recend = rec + count;
4427 while (rec < recend)
4428 {
4429 ++section->lma;
4430 rec += bfd_get_32 (abfd, rec) * 4;
4431 }
4432
4433 BFD_ASSERT (rec == recend);
4434 }
4435 #endif
4436
4437 /* Don't write out bss sections - one way to do this is to
4438 see if the filepos has not been set. */
4439 if (section->filepos == 0)
4440 return TRUE;
4441
4442 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
4443 return FALSE;
4444
4445 if (count == 0)
4446 return TRUE;
4447
4448 return bfd_bwrite (location, count, abfd) == count;
4449 }
4450
4451 static void *
4452 buy_and_read (bfd *abfd, file_ptr where, bfd_size_type size)
4453 {
4454 void * area = bfd_alloc (abfd, size);
4455
4456 if (!area)
4457 return (NULL);
4458 if (bfd_seek (abfd, where, SEEK_SET) != 0
4459 || bfd_bread (area, size, abfd) != size)
4460 return (NULL);
4461 return (area);
4462 }
4463
4464 /*
4465 SUBSUBSECTION
4466 Reading linenumbers
4467
4468 Creating the linenumber table is done by reading in the entire
4469 coff linenumber table, and creating another table for internal use.
4470
4471 A coff linenumber table is structured so that each function
4472 is marked as having a line number of 0. Each line within the
4473 function is an offset from the first line in the function. The
4474 base of the line number information for the table is stored in
4475 the symbol associated with the function.
4476
4477 Note: The PE format uses line number 0 for a flag indicating a
4478 new source file.
4479
4480 The information is copied from the external to the internal
4481 table, and each symbol which marks a function is marked by
4482 pointing its...
4483
4484 How does this work ?
4485 */
4486
4487 static int
4488 coff_sort_func_alent (const void * arg1, const void * arg2)
4489 {
4490 const alent *al1 = *(const alent **) arg1;
4491 const alent *al2 = *(const alent **) arg2;
4492 const coff_symbol_type *s1 = (const coff_symbol_type *) (al1->u.sym);
4493 const coff_symbol_type *s2 = (const coff_symbol_type *) (al2->u.sym);
4494
4495 if (s1->symbol.value < s2->symbol.value)
4496 return -1;
4497 else if (s1->symbol.value > s2->symbol.value)
4498 return 1;
4499
4500 return 0;
4501 }
4502
4503 static bfd_boolean
4504 coff_slurp_line_table (bfd *abfd, asection *asect)
4505 {
4506 LINENO *native_lineno;
4507 alent *lineno_cache;
4508 bfd_size_type amt;
4509 unsigned int counter;
4510 alent *cache_ptr;
4511 bfd_vma prev_offset = 0;
4512 int ordered = 1;
4513 unsigned int nbr_func;
4514 LINENO *src;
4515
4516 BFD_ASSERT (asect->lineno == NULL);
4517
4518 amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent);
4519 lineno_cache = (alent *) bfd_alloc (abfd, amt);
4520 if (lineno_cache == NULL)
4521 return FALSE;
4522
4523 amt = (bfd_size_type) bfd_coff_linesz (abfd) * asect->lineno_count;
4524 native_lineno = (LINENO *) buy_and_read (abfd, asect->line_filepos, amt);
4525 if (native_lineno == NULL)
4526 {
4527 (*_bfd_error_handler)
4528 (_("%B: warning: line number table read failed"), abfd);
4529 bfd_release (abfd, lineno_cache);
4530 return FALSE;
4531 }
4532
4533 cache_ptr = lineno_cache;
4534 asect->lineno = lineno_cache;
4535 src = native_lineno;
4536 nbr_func = 0;
4537
4538 for (counter = 0; counter < asect->lineno_count; counter++)
4539 {
4540 struct internal_lineno dst;
4541
4542 bfd_coff_swap_lineno_in (abfd, src, &dst);
4543 cache_ptr->line_number = dst.l_lnno;
4544
4545 if (cache_ptr->line_number == 0)
4546 {
4547 bfd_boolean warned;
4548 bfd_signed_vma symndx;
4549 coff_symbol_type *sym;
4550
4551 nbr_func++;
4552 warned = FALSE;
4553 symndx = dst.l_addr.l_symndx;
4554 if (symndx < 0
4555 || (bfd_vma) symndx >= obj_raw_syment_count (abfd))
4556 {
4557 (*_bfd_error_handler)
4558 (_("%B: warning: illegal symbol index %ld in line numbers"),
4559 abfd, (long) symndx);
4560 symndx = 0;
4561 warned = TRUE;
4562 }
4563
4564 /* FIXME: We should not be casting between ints and
4565 pointers like this. */
4566 sym = ((coff_symbol_type *)
4567 ((symndx + obj_raw_syments (abfd))
4568 ->u.syment._n._n_n._n_zeroes));
4569 cache_ptr->u.sym = (asymbol *) sym;
4570 if (sym->lineno != NULL && ! warned)
4571 (*_bfd_error_handler)
4572 (_("%B: warning: duplicate line number information for `%s'"),
4573 abfd, bfd_asymbol_name (&sym->symbol));
4574
4575 sym->lineno = cache_ptr;
4576 if (sym->symbol.value < prev_offset)
4577 ordered = 0;
4578 prev_offset = sym->symbol.value;
4579 }
4580 else
4581 cache_ptr->u.offset = dst.l_addr.l_paddr
4582 - bfd_section_vma (abfd, asect);
4583
4584 cache_ptr++;
4585 src++;
4586 }
4587 cache_ptr->line_number = 0;
4588 bfd_release (abfd, native_lineno);
4589
4590 /* On some systems (eg AIX5.3) the lineno table may not be sorted. */
4591 if (!ordered)
4592 {
4593 /* Sort the table. */
4594 alent **func_table;
4595 alent *n_lineno_cache;
4596
4597 /* Create a table of functions. */
4598 func_table = (alent **) bfd_alloc (abfd, nbr_func * sizeof (alent *));
4599 if (func_table != NULL)
4600 {
4601 alent **p = func_table;
4602 unsigned int i;
4603
4604 for (i = 0; i < counter; i++)
4605 if (lineno_cache[i].line_number == 0)
4606 *p++ = &lineno_cache[i];
4607
4608 /* Sort by functions. */
4609 qsort (func_table, nbr_func, sizeof (alent *), coff_sort_func_alent);
4610
4611 /* Create the new sorted table. */
4612 amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent);
4613 n_lineno_cache = (alent *) bfd_alloc (abfd, amt);
4614 if (n_lineno_cache != NULL)
4615 {
4616 alent *n_cache_ptr = n_lineno_cache;
4617
4618 for (i = 0; i < nbr_func; i++)
4619 {
4620 coff_symbol_type *sym;
4621 alent *old_ptr = func_table[i];
4622
4623 /* Copy the function entry and update it. */
4624 *n_cache_ptr = *old_ptr;
4625 sym = (coff_symbol_type *)n_cache_ptr->u.sym;
4626 sym->lineno = n_cache_ptr;
4627 n_cache_ptr++;
4628 old_ptr++;
4629
4630 /* Copy the line number entries. */
4631 while (old_ptr->line_number != 0)
4632 *n_cache_ptr++ = *old_ptr++;
4633 }
4634 n_cache_ptr->line_number = 0;
4635 memcpy (lineno_cache, n_lineno_cache, amt);
4636 }
4637 bfd_release (abfd, func_table);
4638 }
4639 }
4640
4641 return TRUE;
4642 }
4643
4644 /* Slurp in the symbol table, converting it to generic form. Note
4645 that if coff_relocate_section is defined, the linker will read
4646 symbols via coff_link_add_symbols, rather than via this routine. */
4647
4648 static bfd_boolean
4649 coff_slurp_symbol_table (bfd * abfd)
4650 {
4651 combined_entry_type *native_symbols;
4652 coff_symbol_type *cached_area;
4653 unsigned int *table_ptr;
4654 bfd_size_type amt;
4655 unsigned int number_of_symbols = 0;
4656
4657 if (obj_symbols (abfd))
4658 return TRUE;
4659
4660 /* Read in the symbol table. */
4661 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
4662 return FALSE;
4663
4664 /* Allocate enough room for all the symbols in cached form. */
4665 amt = obj_raw_syment_count (abfd);
4666 amt *= sizeof (coff_symbol_type);
4667 cached_area = (coff_symbol_type *) bfd_alloc (abfd, amt);
4668 if (cached_area == NULL)
4669 return FALSE;
4670
4671 amt = obj_raw_syment_count (abfd);
4672 amt *= sizeof (unsigned int);
4673 table_ptr = (unsigned int *) bfd_alloc (abfd, amt);
4674
4675 if (table_ptr == NULL)
4676 return FALSE;
4677 else
4678 {
4679 coff_symbol_type *dst = cached_area;
4680 unsigned int last_native_index = obj_raw_syment_count (abfd);
4681 unsigned int this_index = 0;
4682
4683 while (this_index < last_native_index)
4684 {
4685 combined_entry_type *src = native_symbols + this_index;
4686 table_ptr[this_index] = number_of_symbols;
4687 dst->symbol.the_bfd = abfd;
4688
4689 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
4690 /* We use the native name field to point to the cached field. */
4691 src->u.syment._n._n_n._n_zeroes = (bfd_hostptr_t) dst;
4692 dst->symbol.section = coff_section_from_bfd_index (abfd,
4693 src->u.syment.n_scnum);
4694 dst->symbol.flags = 0;
4695 dst->done_lineno = FALSE;
4696
4697 switch (src->u.syment.n_sclass)
4698 {
4699 #ifdef I960
4700 case C_LEAFEXT:
4701 /* Fall through to next case. */
4702 #endif
4703
4704 case C_EXT:
4705 case C_WEAKEXT:
4706 #if defined ARM
4707 case C_THUMBEXT:
4708 case C_THUMBEXTFUNC:
4709 #endif
4710 #ifdef RS6000COFF_C
4711 case C_HIDEXT:
4712 #endif
4713 #ifdef C_SYSTEM
4714 case C_SYSTEM: /* System Wide variable. */
4715 #endif
4716 #ifdef COFF_WITH_PE
4717 /* In PE, 0x68 (104) denotes a section symbol. */
4718 case C_SECTION:
4719 /* In PE, 0x69 (105) denotes a weak external symbol. */
4720 case C_NT_WEAK:
4721 #endif
4722 switch (coff_classify_symbol (abfd, &src->u.syment))
4723 {
4724 case COFF_SYMBOL_GLOBAL:
4725 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4726 #if defined COFF_WITH_PE
4727 /* PE sets the symbol to a value relative to the
4728 start of the section. */
4729 dst->symbol.value = src->u.syment.n_value;
4730 #else
4731 dst->symbol.value = (src->u.syment.n_value
4732 - dst->symbol.section->vma);
4733 #endif
4734 if (ISFCN ((src->u.syment.n_type)))
4735 /* A function ext does not go at the end of a
4736 file. */
4737 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4738 break;
4739
4740 case COFF_SYMBOL_COMMON:
4741 dst->symbol.section = bfd_com_section_ptr;
4742 dst->symbol.value = src->u.syment.n_value;
4743 break;
4744
4745 case COFF_SYMBOL_UNDEFINED:
4746 dst->symbol.section = bfd_und_section_ptr;
4747 dst->symbol.value = 0;
4748 break;
4749
4750 case COFF_SYMBOL_PE_SECTION:
4751 dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM;
4752 dst->symbol.value = 0;
4753 break;
4754
4755 case COFF_SYMBOL_LOCAL:
4756 dst->symbol.flags = BSF_LOCAL;
4757 #if defined COFF_WITH_PE
4758 /* PE sets the symbol to a value relative to the
4759 start of the section. */
4760 dst->symbol.value = src->u.syment.n_value;
4761 #else
4762 dst->symbol.value = (src->u.syment.n_value
4763 - dst->symbol.section->vma);
4764 #endif
4765 if (ISFCN ((src->u.syment.n_type)))
4766 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4767 break;
4768 }
4769
4770 #ifdef RS6000COFF_C
4771 /* A symbol with a csect entry should not go at the end. */
4772 if (src->u.syment.n_numaux > 0)
4773 dst->symbol.flags |= BSF_NOT_AT_END;
4774 #endif
4775
4776 #ifdef COFF_WITH_PE
4777 if (src->u.syment.n_sclass == C_NT_WEAK)
4778 dst->symbol.flags |= BSF_WEAK;
4779
4780 if (src->u.syment.n_sclass == C_SECTION
4781 && src->u.syment.n_scnum > 0)
4782 dst->symbol.flags = BSF_LOCAL;
4783 #endif
4784 if (src->u.syment.n_sclass == C_WEAKEXT)
4785 dst->symbol.flags |= BSF_WEAK;
4786
4787 break;
4788
4789 case C_STAT: /* Static. */
4790 #ifdef I960
4791 case C_LEAFSTAT: /* Static leaf procedure. */
4792 #endif
4793 #if defined ARM
4794 case C_THUMBSTAT: /* Thumb static. */
4795 case C_THUMBLABEL: /* Thumb label. */
4796 case C_THUMBSTATFUNC:/* Thumb static function. */
4797 #endif
4798 #ifdef RS6000COFF_C
4799 case C_DWARF: /* A label in a dwarf section. */
4800 case C_INFO: /* A label in a comment section. */
4801 #endif
4802 case C_LABEL: /* Label. */
4803 if (src->u.syment.n_scnum == N_DEBUG)
4804 dst->symbol.flags = BSF_DEBUGGING;
4805 else
4806 dst->symbol.flags = BSF_LOCAL;
4807
4808 /* Base the value as an index from the base of the
4809 section, if there is one. */
4810 if (dst->symbol.section)
4811 {
4812 #if defined COFF_WITH_PE
4813 /* PE sets the symbol to a value relative to the
4814 start of the section. */
4815 dst->symbol.value = src->u.syment.n_value;
4816 #else
4817 dst->symbol.value = (src->u.syment.n_value
4818 - dst->symbol.section->vma);
4819 #endif
4820 }
4821 else
4822 dst->symbol.value = src->u.syment.n_value;
4823 break;
4824
4825 case C_MOS: /* Member of structure. */
4826 case C_EOS: /* End of structure. */
4827 case C_REGPARM: /* Register parameter. */
4828 case C_REG: /* register variable. */
4829 /* C_AUTOARG conflicts with TI COFF C_UEXT. */
4830 #if !defined (TIC80COFF) && !defined (TICOFF)
4831 #ifdef C_AUTOARG
4832 case C_AUTOARG: /* 960-specific storage class. */
4833 #endif
4834 #endif
4835 case C_TPDEF: /* Type definition. */
4836 case C_ARG:
4837 case C_AUTO: /* Automatic variable. */
4838 case C_FIELD: /* Bit field. */
4839 case C_ENTAG: /* Enumeration tag. */
4840 case C_MOE: /* Member of enumeration. */
4841 case C_MOU: /* Member of union. */
4842 case C_UNTAG: /* Union tag. */
4843 dst->symbol.flags = BSF_DEBUGGING;
4844 dst->symbol.value = (src->u.syment.n_value);
4845 break;
4846
4847 case C_FILE: /* File name. */
4848 case C_STRTAG: /* Structure tag. */
4849 #ifdef RS6000COFF_C
4850 case C_GSYM:
4851 case C_LSYM:
4852 case C_PSYM:
4853 case C_RSYM:
4854 case C_RPSYM:
4855 case C_STSYM:
4856 case C_TCSYM:
4857 case C_BCOMM:
4858 case C_ECOML:
4859 case C_ECOMM:
4860 case C_DECL:
4861 case C_ENTRY:
4862 case C_FUN:
4863 case C_ESTAT:
4864 #endif
4865 dst->symbol.flags = BSF_DEBUGGING;
4866 dst->symbol.value = (src->u.syment.n_value);
4867 break;
4868
4869 #ifdef RS6000COFF_C
4870 case C_BINCL: /* Beginning of include file. */
4871 case C_EINCL: /* Ending of include file. */
4872 /* The value is actually a pointer into the line numbers
4873 of the file. We locate the line number entry, and
4874 set the section to the section which contains it, and
4875 the value to the index in that section. */
4876 {
4877 asection *sec;
4878
4879 dst->symbol.flags = BSF_DEBUGGING;
4880 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4881 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
4882 && ((file_ptr) (sec->line_filepos
4883 + sec->lineno_count * bfd_coff_linesz (abfd))
4884 > (file_ptr) src->u.syment.n_value))
4885 break;
4886 if (sec == NULL)
4887 dst->symbol.value = 0;
4888 else
4889 {
4890 dst->symbol.section = sec;
4891 dst->symbol.value = ((src->u.syment.n_value
4892 - sec->line_filepos)
4893 / bfd_coff_linesz (abfd));
4894 src->fix_line = 1;
4895 }
4896 }
4897 break;
4898
4899 case C_BSTAT:
4900 dst->symbol.flags = BSF_DEBUGGING;
4901
4902 /* The value is actually a symbol index. Save a pointer
4903 to the symbol instead of the index. FIXME: This
4904 should use a union. */
4905 src->u.syment.n_value =
4906 (long) (intptr_t) (native_symbols + src->u.syment.n_value);
4907 dst->symbol.value = src->u.syment.n_value;
4908 src->fix_value = 1;
4909 break;
4910 #endif
4911
4912 case C_BLOCK: /* ".bb" or ".eb". */
4913 case C_FCN: /* ".bf" or ".ef" (or PE ".lf"). */
4914 case C_EFCN: /* Physical end of function. */
4915 #if defined COFF_WITH_PE
4916 /* PE sets the symbol to a value relative to the start
4917 of the section. */
4918 dst->symbol.value = src->u.syment.n_value;
4919 if (strcmp (dst->symbol.name, ".bf") != 0)
4920 {
4921 /* PE uses funny values for .ef and .lf; don't
4922 relocate them. */
4923 dst->symbol.flags = BSF_DEBUGGING;
4924 }
4925 else
4926 dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC;
4927 #else
4928 /* Base the value as an index from the base of the
4929 section. */
4930 dst->symbol.flags = BSF_LOCAL;
4931 dst->symbol.value = (src->u.syment.n_value
4932 - dst->symbol.section->vma);
4933 #endif
4934 break;
4935
4936 case C_STATLAB: /* Static load time label. */
4937 dst->symbol.value = src->u.syment.n_value;
4938 dst->symbol.flags = BSF_GLOBAL;
4939 break;
4940
4941 case C_NULL:
4942 /* PE DLLs sometimes have zeroed out symbols for some
4943 reason. Just ignore them without a warning. */
4944 if (src->u.syment.n_type == 0
4945 && src->u.syment.n_value == 0
4946 && src->u.syment.n_scnum == 0)
4947 break;
4948 #ifdef RS6000COFF_C
4949 /* XCOFF specific: deleted entry. */
4950 if (src->u.syment.n_value == C_NULL_VALUE)
4951 break;
4952 #endif
4953 /* Fall through. */
4954 case C_EXTDEF: /* External definition. */
4955 case C_ULABEL: /* Undefined label. */
4956 case C_USTATIC: /* Undefined static. */
4957 #ifndef COFF_WITH_PE
4958 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4959 class to represent a section symbol. */
4960 case C_LINE: /* line # reformatted as symbol table entry. */
4961 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4962 case C_ALIAS: /* Duplicate tag. */
4963 #endif
4964 /* New storage classes for TI COFF. */
4965 #if defined(TIC80COFF) || defined(TICOFF)
4966 case C_UEXT: /* Tentative external definition. */
4967 #endif
4968 case C_EXTLAB: /* External load time label. */
4969 case C_HIDDEN: /* Ext symbol in dmert public lib. */
4970 default:
4971 (*_bfd_error_handler)
4972 (_("%B: Unrecognized storage class %d for %s symbol `%s'"),
4973 abfd, src->u.syment.n_sclass,
4974 dst->symbol.section->name, dst->symbol.name);
4975 dst->symbol.flags = BSF_DEBUGGING;
4976 dst->symbol.value = (src->u.syment.n_value);
4977 break;
4978 }
4979
4980 dst->native = src;
4981
4982 dst->symbol.udata.i = 0;
4983 dst->lineno = NULL;
4984 this_index += (src->u.syment.n_numaux) + 1;
4985 dst++;
4986 number_of_symbols++;
4987 }
4988 }
4989
4990 obj_symbols (abfd) = cached_area;
4991 obj_raw_syments (abfd) = native_symbols;
4992
4993 bfd_get_symcount (abfd) = number_of_symbols;
4994 obj_convert (abfd) = table_ptr;
4995 /* Slurp the line tables for each section too. */
4996 {
4997 asection *p;
4998
4999 p = abfd->sections;
5000 while (p)
5001 {
5002 coff_slurp_line_table (abfd, p);
5003 p = p->next;
5004 }
5005 }
5006
5007 return TRUE;
5008 }
5009
5010 /* Classify a COFF symbol. A couple of targets have globally visible
5011 symbols which are not class C_EXT, and this handles those. It also
5012 recognizes some special PE cases. */
5013
5014 static enum coff_symbol_classification
5015 coff_classify_symbol (bfd *abfd,
5016 struct internal_syment *syment)
5017 {
5018 /* FIXME: This partially duplicates the switch in
5019 coff_slurp_symbol_table. */
5020 switch (syment->n_sclass)
5021 {
5022 case C_EXT:
5023 case C_WEAKEXT:
5024 #ifdef I960
5025 case C_LEAFEXT:
5026 #endif
5027 #ifdef ARM
5028 case C_THUMBEXT:
5029 case C_THUMBEXTFUNC:
5030 #endif
5031 #ifdef C_SYSTEM
5032 case C_SYSTEM:
5033 #endif
5034 #ifdef COFF_WITH_PE
5035 case C_NT_WEAK:
5036 #endif
5037 if (syment->n_scnum == 0)
5038 {
5039 if (syment->n_value == 0)
5040 return COFF_SYMBOL_UNDEFINED;
5041 else
5042 return COFF_SYMBOL_COMMON;
5043 }
5044 return COFF_SYMBOL_GLOBAL;
5045
5046 default:
5047 break;
5048 }
5049
5050 #ifdef COFF_WITH_PE
5051 if (syment->n_sclass == C_STAT)
5052 {
5053 if (syment->n_scnum == 0)
5054 /* The Microsoft compiler sometimes generates these if a
5055 small static function is inlined every time it is used.
5056 The function is discarded, but the symbol table entry
5057 remains. */
5058 return COFF_SYMBOL_LOCAL;
5059
5060 #ifdef STRICT_PE_FORMAT
5061 /* This is correct for Microsoft generated objects, but it
5062 breaks gas generated objects. */
5063 if (syment->n_value == 0)
5064 {
5065 asection *sec;
5066 char buf[SYMNMLEN + 1];
5067
5068 sec = coff_section_from_bfd_index (abfd, syment->n_scnum);
5069 if (sec != NULL
5070 && (strcmp (bfd_get_section_name (abfd, sec),
5071 _bfd_coff_internal_syment_name (abfd, syment, buf))
5072 == 0))
5073 return COFF_SYMBOL_PE_SECTION;
5074 }
5075 #endif
5076
5077 return COFF_SYMBOL_LOCAL;
5078 }
5079
5080 if (syment->n_sclass == C_SECTION)
5081 {
5082 /* In some cases in a DLL generated by the Microsoft linker, the
5083 n_value field will contain garbage. FIXME: This should
5084 probably be handled by the swapping function instead. */
5085 syment->n_value = 0;
5086 if (syment->n_scnum == 0)
5087 return COFF_SYMBOL_UNDEFINED;
5088 return COFF_SYMBOL_PE_SECTION;
5089 }
5090 #endif /* COFF_WITH_PE */
5091
5092 /* If it is not a global symbol, we presume it is a local symbol. */
5093 if (syment->n_scnum == 0)
5094 {
5095 char buf[SYMNMLEN + 1];
5096
5097 (*_bfd_error_handler)
5098 (_("warning: %B: local symbol `%s' has no section"),
5099 abfd, _bfd_coff_internal_syment_name (abfd, syment, buf));
5100 }
5101
5102 return COFF_SYMBOL_LOCAL;
5103 }
5104
5105 /*
5106 SUBSUBSECTION
5107 Reading relocations
5108
5109 Coff relocations are easily transformed into the internal BFD form
5110 (@code{arelent}).
5111
5112 Reading a coff relocation table is done in the following stages:
5113
5114 o Read the entire coff relocation table into memory.
5115
5116 o Process each relocation in turn; first swap it from the
5117 external to the internal form.
5118
5119 o Turn the symbol referenced in the relocation's symbol index
5120 into a pointer into the canonical symbol table.
5121 This table is the same as the one returned by a call to
5122 @code{bfd_canonicalize_symtab}. The back end will call that
5123 routine and save the result if a canonicalization hasn't been done.
5124
5125 o The reloc index is turned into a pointer to a howto
5126 structure, in a back end specific way. For instance, the 386
5127 and 960 use the @code{r_type} to directly produce an index
5128 into a howto table vector; the 88k subtracts a number from the
5129 @code{r_type} field and creates an addend field.
5130 */
5131
5132 #ifndef CALC_ADDEND
5133 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
5134 { \
5135 coff_symbol_type *coffsym = NULL; \
5136 \
5137 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
5138 coffsym = (obj_symbols (abfd) \
5139 + (cache_ptr->sym_ptr_ptr - symbols)); \
5140 else if (ptr) \
5141 coffsym = coff_symbol_from (abfd, ptr); \
5142 if (coffsym != NULL \
5143 && coffsym->native->u.syment.n_scnum == 0) \
5144 cache_ptr->addend = 0; \
5145 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
5146 && ptr->section != NULL) \
5147 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
5148 else \
5149 cache_ptr->addend = 0; \
5150 }
5151 #endif
5152
5153 static bfd_boolean
5154 coff_slurp_reloc_table (bfd * abfd, sec_ptr asect, asymbol ** symbols)
5155 {
5156 RELOC *native_relocs;
5157 arelent *reloc_cache;
5158 arelent *cache_ptr;
5159 unsigned int idx;
5160 bfd_size_type amt;
5161
5162 if (asect->relocation)
5163 return TRUE;
5164 if (asect->reloc_count == 0)
5165 return TRUE;
5166 if (asect->flags & SEC_CONSTRUCTOR)
5167 return TRUE;
5168 if (!coff_slurp_symbol_table (abfd))
5169 return FALSE;
5170
5171 amt = (bfd_size_type) bfd_coff_relsz (abfd) * asect->reloc_count;
5172 native_relocs = (RELOC *) buy_and_read (abfd, asect->rel_filepos, amt);
5173 amt = (bfd_size_type) asect->reloc_count * sizeof (arelent);
5174 reloc_cache = (arelent *) bfd_alloc (abfd, amt);
5175
5176 if (reloc_cache == NULL || native_relocs == NULL)
5177 return FALSE;
5178
5179 for (idx = 0; idx < asect->reloc_count; idx++)
5180 {
5181 struct internal_reloc dst;
5182 struct external_reloc *src;
5183 #ifndef RELOC_PROCESSING
5184 asymbol *ptr;
5185 #endif
5186
5187 cache_ptr = reloc_cache + idx;
5188 src = native_relocs + idx;
5189
5190 dst.r_offset = 0;
5191 coff_swap_reloc_in (abfd, src, &dst);
5192
5193 #ifdef RELOC_PROCESSING
5194 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
5195 #else
5196 cache_ptr->address = dst.r_vaddr;
5197
5198 if (dst.r_symndx != -1)
5199 {
5200 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
5201 {
5202 (*_bfd_error_handler)
5203 (_("%B: warning: illegal symbol index %ld in relocs"),
5204 abfd, (long) dst.r_symndx);
5205 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5206 ptr = NULL;
5207 }
5208 else
5209 {
5210 cache_ptr->sym_ptr_ptr = (symbols
5211 + obj_convert (abfd)[dst.r_symndx]);
5212 ptr = *(cache_ptr->sym_ptr_ptr);
5213 }
5214 }
5215 else
5216 {
5217 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5218 ptr = NULL;
5219 }
5220
5221 /* The symbols definitions that we have read in have been
5222 relocated as if their sections started at 0. But the offsets
5223 refering to the symbols in the raw data have not been
5224 modified, so we have to have a negative addend to compensate.
5225
5226 Note that symbols which used to be common must be left alone. */
5227
5228 /* Calculate any reloc addend by looking at the symbol. */
5229 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
5230 (void) ptr;
5231
5232 cache_ptr->address -= asect->vma;
5233 /* !! cache_ptr->section = NULL;*/
5234
5235 /* Fill in the cache_ptr->howto field from dst.r_type. */
5236 RTYPE2HOWTO (cache_ptr, &dst);
5237 #endif /* RELOC_PROCESSING */
5238
5239 if (cache_ptr->howto == NULL)
5240 {
5241 (*_bfd_error_handler)
5242 (_("%B: illegal relocation type %d at address 0x%lx"),
5243 abfd, dst.r_type, (long) dst.r_vaddr);
5244 bfd_set_error (bfd_error_bad_value);
5245 return FALSE;
5246 }
5247 }
5248
5249 asect->relocation = reloc_cache;
5250 return TRUE;
5251 }
5252
5253 #ifndef coff_rtype_to_howto
5254 #ifdef RTYPE2HOWTO
5255
5256 /* Get the howto structure for a reloc. This is only used if the file
5257 including this one defines coff_relocate_section to be
5258 _bfd_coff_generic_relocate_section, so it is OK if it does not
5259 always work. It is the responsibility of the including file to
5260 make sure it is reasonable if it is needed. */
5261
5262 static reloc_howto_type *
5263 coff_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
5264 asection *sec ATTRIBUTE_UNUSED,
5265 struct internal_reloc *rel,
5266 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED,
5267 struct internal_syment *sym ATTRIBUTE_UNUSED,
5268 bfd_vma *addendp ATTRIBUTE_UNUSED)
5269 {
5270 arelent genrel;
5271
5272 genrel.howto = NULL;
5273 RTYPE2HOWTO (&genrel, rel);
5274 return genrel.howto;
5275 }
5276
5277 #else /* ! defined (RTYPE2HOWTO) */
5278
5279 #define coff_rtype_to_howto NULL
5280
5281 #endif /* ! defined (RTYPE2HOWTO) */
5282 #endif /* ! defined (coff_rtype_to_howto) */
5283
5284 /* This is stupid. This function should be a boolean predicate. */
5285
5286 static long
5287 coff_canonicalize_reloc (bfd * abfd,
5288 sec_ptr section,
5289 arelent ** relptr,
5290 asymbol ** symbols)
5291 {
5292 arelent *tblptr = section->relocation;
5293 unsigned int count = 0;
5294
5295 if (section->flags & SEC_CONSTRUCTOR)
5296 {
5297 /* This section has relocs made up by us, they are not in the
5298 file, so take them out of their chain and place them into
5299 the data area provided. */
5300 arelent_chain *chain = section->constructor_chain;
5301
5302 for (count = 0; count < section->reloc_count; count++)
5303 {
5304 *relptr++ = &chain->relent;
5305 chain = chain->next;
5306 }
5307 }
5308 else
5309 {
5310 if (! coff_slurp_reloc_table (abfd, section, symbols))
5311 return -1;
5312
5313 tblptr = section->relocation;
5314
5315 for (; count++ < section->reloc_count;)
5316 *relptr++ = tblptr++;
5317 }
5318 *relptr = 0;
5319 return section->reloc_count;
5320 }
5321
5322 #ifndef coff_reloc16_estimate
5323 #define coff_reloc16_estimate dummy_reloc16_estimate
5324
5325 static int
5326 dummy_reloc16_estimate (bfd *abfd ATTRIBUTE_UNUSED,
5327 asection *input_section ATTRIBUTE_UNUSED,
5328 arelent *reloc ATTRIBUTE_UNUSED,
5329 unsigned int shrink ATTRIBUTE_UNUSED,
5330 struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
5331 {
5332 abort ();
5333 return 0;
5334 }
5335
5336 #endif
5337
5338 #ifndef coff_reloc16_extra_cases
5339
5340 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
5341
5342 /* This works even if abort is not declared in any header file. */
5343
5344 static void
5345 dummy_reloc16_extra_cases (bfd *abfd ATTRIBUTE_UNUSED,
5346 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
5347 struct bfd_link_order *link_order ATTRIBUTE_UNUSED,
5348 arelent *reloc ATTRIBUTE_UNUSED,
5349 bfd_byte *data ATTRIBUTE_UNUSED,
5350 unsigned int *src_ptr ATTRIBUTE_UNUSED,
5351 unsigned int *dst_ptr ATTRIBUTE_UNUSED)
5352 {
5353 abort ();
5354 }
5355 #endif
5356
5357 #ifndef coff_bfd_link_hash_table_free
5358 #define coff_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
5359 #endif
5360
5361 /* If coff_relocate_section is defined, we can use the optimized COFF
5362 backend linker. Otherwise we must continue to use the old linker. */
5363
5364 #ifdef coff_relocate_section
5365
5366 #ifndef coff_bfd_link_hash_table_create
5367 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
5368 #endif
5369 #ifndef coff_bfd_link_add_symbols
5370 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
5371 #endif
5372 #ifndef coff_bfd_final_link
5373 #define coff_bfd_final_link _bfd_coff_final_link
5374 #endif
5375
5376 #else /* ! defined (coff_relocate_section) */
5377
5378 #define coff_relocate_section NULL
5379 #ifndef coff_bfd_link_hash_table_create
5380 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
5381 #endif
5382 #ifndef coff_bfd_link_add_symbols
5383 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
5384 #endif
5385 #define coff_bfd_final_link _bfd_generic_final_link
5386
5387 #endif /* ! defined (coff_relocate_section) */
5388
5389 #define coff_bfd_link_just_syms _bfd_generic_link_just_syms
5390 #define coff_bfd_copy_link_hash_symbol_type \
5391 _bfd_generic_copy_link_hash_symbol_type
5392 #define coff_bfd_link_split_section _bfd_generic_link_split_section
5393
5394 #ifndef coff_start_final_link
5395 #define coff_start_final_link NULL
5396 #endif
5397
5398 #ifndef coff_adjust_symndx
5399 #define coff_adjust_symndx NULL
5400 #endif
5401
5402 #ifndef coff_link_add_one_symbol
5403 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5404 #endif
5405
5406 #ifndef coff_link_output_has_begun
5407
5408 static bfd_boolean
5409 coff_link_output_has_begun (bfd * abfd,
5410 struct coff_final_link_info * info ATTRIBUTE_UNUSED)
5411 {
5412 return abfd->output_has_begun;
5413 }
5414 #endif
5415
5416 #ifndef coff_final_link_postscript
5417
5418 static bfd_boolean
5419 coff_final_link_postscript (bfd * abfd ATTRIBUTE_UNUSED,
5420 struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED)
5421 {
5422 return TRUE;
5423 }
5424 #endif
5425
5426 #ifndef coff_SWAP_aux_in
5427 #define coff_SWAP_aux_in coff_swap_aux_in
5428 #endif
5429 #ifndef coff_SWAP_sym_in
5430 #define coff_SWAP_sym_in coff_swap_sym_in
5431 #endif
5432 #ifndef coff_SWAP_lineno_in
5433 #define coff_SWAP_lineno_in coff_swap_lineno_in
5434 #endif
5435 #ifndef coff_SWAP_aux_out
5436 #define coff_SWAP_aux_out coff_swap_aux_out
5437 #endif
5438 #ifndef coff_SWAP_sym_out
5439 #define coff_SWAP_sym_out coff_swap_sym_out
5440 #endif
5441 #ifndef coff_SWAP_lineno_out
5442 #define coff_SWAP_lineno_out coff_swap_lineno_out
5443 #endif
5444 #ifndef coff_SWAP_reloc_out
5445 #define coff_SWAP_reloc_out coff_swap_reloc_out
5446 #endif
5447 #ifndef coff_SWAP_filehdr_out
5448 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5449 #endif
5450 #ifndef coff_SWAP_aouthdr_out
5451 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5452 #endif
5453 #ifndef coff_SWAP_scnhdr_out
5454 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5455 #endif
5456 #ifndef coff_SWAP_reloc_in
5457 #define coff_SWAP_reloc_in coff_swap_reloc_in
5458 #endif
5459 #ifndef coff_SWAP_filehdr_in
5460 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5461 #endif
5462 #ifndef coff_SWAP_aouthdr_in
5463 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5464 #endif
5465 #ifndef coff_SWAP_scnhdr_in
5466 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5467 #endif
5468
5469 static bfd_coff_backend_data bfd_coff_std_swap_table ATTRIBUTE_UNUSED =
5470 {
5471 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5472 coff_SWAP_aux_out, coff_SWAP_sym_out,
5473 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5474 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5475 coff_SWAP_scnhdr_out,
5476 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5477 #ifdef COFF_LONG_FILENAMES
5478 TRUE,
5479 #else
5480 FALSE,
5481 #endif
5482 COFF_DEFAULT_LONG_SECTION_NAMES,
5483 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5484 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5485 TRUE,
5486 #else
5487 FALSE,
5488 #endif
5489 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5490 4,
5491 #else
5492 2,
5493 #endif
5494 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5495 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5496 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5497 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5498 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5499 coff_classify_symbol, coff_compute_section_file_positions,
5500 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5501 coff_adjust_symndx, coff_link_add_one_symbol,
5502 coff_link_output_has_begun, coff_final_link_postscript,
5503 bfd_pe_print_pdata
5504 };
5505
5506 #ifdef TICOFF
5507 /* COFF0 differs in file/section header size and relocation entry size. */
5508
5509 static bfd_coff_backend_data ticoff0_swap_table =
5510 {
5511 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5512 coff_SWAP_aux_out, coff_SWAP_sym_out,
5513 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5514 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5515 coff_SWAP_scnhdr_out,
5516 FILHSZ_V0, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ_V0, LINESZ, FILNMLEN,
5517 #ifdef COFF_LONG_FILENAMES
5518 TRUE,
5519 #else
5520 FALSE,
5521 #endif
5522 COFF_DEFAULT_LONG_SECTION_NAMES,
5523 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5524 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5525 TRUE,
5526 #else
5527 FALSE,
5528 #endif
5529 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5530 4,
5531 #else
5532 2,
5533 #endif
5534 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5535 coff_SWAP_reloc_in, ticoff0_bad_format_hook, coff_set_arch_mach_hook,
5536 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5537 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5538 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5539 coff_classify_symbol, coff_compute_section_file_positions,
5540 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5541 coff_adjust_symndx, coff_link_add_one_symbol,
5542 coff_link_output_has_begun, coff_final_link_postscript,
5543 bfd_pe_print_pdata
5544 };
5545 #endif
5546
5547 #ifdef TICOFF
5548 /* COFF1 differs in section header size. */
5549
5550 static bfd_coff_backend_data ticoff1_swap_table =
5551 {
5552 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5553 coff_SWAP_aux_out, coff_SWAP_sym_out,
5554 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5555 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5556 coff_SWAP_scnhdr_out,
5557 FILHSZ, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5558 #ifdef COFF_LONG_FILENAMES
5559 TRUE,
5560 #else
5561 FALSE,
5562 #endif
5563 COFF_DEFAULT_LONG_SECTION_NAMES,
5564 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5565 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5566 TRUE,
5567 #else
5568 FALSE,
5569 #endif
5570 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5571 4,
5572 #else
5573 2,
5574 #endif
5575 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5576 coff_SWAP_reloc_in, ticoff1_bad_format_hook, coff_set_arch_mach_hook,
5577 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5578 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5579 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5580 coff_classify_symbol, coff_compute_section_file_positions,
5581 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5582 coff_adjust_symndx, coff_link_add_one_symbol,
5583 coff_link_output_has_begun, coff_final_link_postscript,
5584 bfd_pe_print_pdata /* huh */
5585 };
5586 #endif
5587
5588 #ifndef coff_close_and_cleanup
5589 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5590 #endif
5591
5592 #ifndef coff_bfd_free_cached_info
5593 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5594 #endif
5595
5596 #ifndef coff_get_section_contents
5597 #define coff_get_section_contents _bfd_generic_get_section_contents
5598 #endif
5599
5600 #ifndef coff_bfd_copy_private_symbol_data
5601 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5602 #endif
5603
5604 #ifndef coff_bfd_copy_private_header_data
5605 #define coff_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
5606 #endif
5607
5608 #ifndef coff_bfd_copy_private_section_data
5609 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5610 #endif
5611
5612 #ifndef coff_bfd_copy_private_bfd_data
5613 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5614 #endif
5615
5616 #ifndef coff_bfd_merge_private_bfd_data
5617 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5618 #endif
5619
5620 #ifndef coff_bfd_set_private_flags
5621 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5622 #endif
5623
5624 #ifndef coff_bfd_print_private_bfd_data
5625 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5626 #endif
5627
5628 #ifndef coff_bfd_is_local_label_name
5629 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5630 #endif
5631
5632 #ifndef coff_bfd_is_target_special_symbol
5633 #define coff_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
5634 #endif
5635
5636 #ifndef coff_read_minisymbols
5637 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5638 #endif
5639
5640 #ifndef coff_minisymbol_to_symbol
5641 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5642 #endif
5643
5644 /* The reloc lookup routine must be supplied by each individual COFF
5645 backend. */
5646 #ifndef coff_bfd_reloc_type_lookup
5647 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5648 #endif
5649 #ifndef coff_bfd_reloc_name_lookup
5650 #define coff_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
5651 #endif
5652
5653 #ifndef coff_bfd_get_relocated_section_contents
5654 #define coff_bfd_get_relocated_section_contents \
5655 bfd_generic_get_relocated_section_contents
5656 #endif
5657
5658 #ifndef coff_bfd_relax_section
5659 #define coff_bfd_relax_section bfd_generic_relax_section
5660 #endif
5661
5662 #ifndef coff_bfd_gc_sections
5663 #define coff_bfd_gc_sections bfd_generic_gc_sections
5664 #endif
5665
5666 #ifndef coff_bfd_lookup_section_flags
5667 #define coff_bfd_lookup_section_flags bfd_generic_lookup_section_flags
5668 #endif
5669
5670 #ifndef coff_bfd_merge_sections
5671 #define coff_bfd_merge_sections bfd_generic_merge_sections
5672 #endif
5673
5674 #ifndef coff_bfd_is_group_section
5675 #define coff_bfd_is_group_section bfd_generic_is_group_section
5676 #endif
5677
5678 #ifndef coff_bfd_discard_group
5679 #define coff_bfd_discard_group bfd_generic_discard_group
5680 #endif
5681
5682 #ifndef coff_section_already_linked
5683 #define coff_section_already_linked \
5684 _bfd_coff_section_already_linked
5685 #endif
5686
5687 #ifndef coff_bfd_define_common_symbol
5688 #define coff_bfd_define_common_symbol bfd_generic_define_common_symbol
5689 #endif
5690
5691 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5692 const bfd_target VAR = \
5693 { \
5694 NAME , \
5695 bfd_target_coff_flavour, \
5696 BFD_ENDIAN_BIG, /* Data byte order is big. */ \
5697 BFD_ENDIAN_BIG, /* Header byte order is big. */ \
5698 /* object flags */ \
5699 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5700 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5701 /* section flags */ \
5702 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5703 UNDER, /* Leading symbol underscore. */ \
5704 '/', /* AR_pad_char. */ \
5705 15, /* AR_max_namelen. */ \
5706 0, /* match priority. */ \
5707 \
5708 /* Data conversion functions. */ \
5709 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5710 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5711 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5712 \
5713 /* Header conversion functions. */ \
5714 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5715 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5716 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5717 \
5718 /* bfd_check_format. */ \
5719 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5720 _bfd_dummy_target }, \
5721 /* bfd_set_format. */ \
5722 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5723 /* bfd_write_contents. */ \
5724 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5725 bfd_false }, \
5726 \
5727 BFD_JUMP_TABLE_GENERIC (coff), \
5728 BFD_JUMP_TABLE_COPY (coff), \
5729 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5730 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5731 BFD_JUMP_TABLE_SYMBOLS (coff), \
5732 BFD_JUMP_TABLE_RELOCS (coff), \
5733 BFD_JUMP_TABLE_WRITE (coff), \
5734 BFD_JUMP_TABLE_LINK (coff), \
5735 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5736 \
5737 ALTERNATIVE, \
5738 \
5739 SWAP_TABLE \
5740 };
5741
5742 #define CREATE_BIGHDR_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5743 const bfd_target VAR = \
5744 { \
5745 NAME , \
5746 bfd_target_coff_flavour, \
5747 BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \
5748 BFD_ENDIAN_BIG, /* Header byte order is big. */ \
5749 /* object flags */ \
5750 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5751 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5752 /* section flags */ \
5753 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5754 UNDER, /* Leading symbol underscore. */ \
5755 '/', /* AR_pad_char. */ \
5756 15, /* AR_max_namelen. */ \
5757 0, /* match priority. */ \
5758 \
5759 /* Data conversion functions. */ \
5760 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5761 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5762 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5763 \
5764 /* Header conversion functions. */ \
5765 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5766 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5767 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5768 \
5769 /* bfd_check_format. */ \
5770 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5771 _bfd_dummy_target }, \
5772 /* bfd_set_format. */ \
5773 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5774 /* bfd_write_contents. */ \
5775 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5776 bfd_false }, \
5777 \
5778 BFD_JUMP_TABLE_GENERIC (coff), \
5779 BFD_JUMP_TABLE_COPY (coff), \
5780 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5781 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5782 BFD_JUMP_TABLE_SYMBOLS (coff), \
5783 BFD_JUMP_TABLE_RELOCS (coff), \
5784 BFD_JUMP_TABLE_WRITE (coff), \
5785 BFD_JUMP_TABLE_LINK (coff), \
5786 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5787 \
5788 ALTERNATIVE, \
5789 \
5790 SWAP_TABLE \
5791 };
5792
5793 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5794 const bfd_target VAR = \
5795 { \
5796 NAME , \
5797 bfd_target_coff_flavour, \
5798 BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \
5799 BFD_ENDIAN_LITTLE, /* Header byte order is little. */ \
5800 /* object flags */ \
5801 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5802 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5803 /* section flags */ \
5804 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5805 UNDER, /* Leading symbol underscore. */ \
5806 '/', /* AR_pad_char. */ \
5807 15, /* AR_max_namelen. */ \
5808 0, /* match priority. */ \
5809 \
5810 /* Data conversion functions. */ \
5811 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5812 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5813 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5814 /* Header conversion functions. */ \
5815 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5816 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5817 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5818 /* bfd_check_format. */ \
5819 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5820 _bfd_dummy_target }, \
5821 /* bfd_set_format. */ \
5822 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5823 /* bfd_write_contents. */ \
5824 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5825 bfd_false }, \
5826 \
5827 BFD_JUMP_TABLE_GENERIC (coff), \
5828 BFD_JUMP_TABLE_COPY (coff), \
5829 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5830 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5831 BFD_JUMP_TABLE_SYMBOLS (coff), \
5832 BFD_JUMP_TABLE_RELOCS (coff), \
5833 BFD_JUMP_TABLE_WRITE (coff), \
5834 BFD_JUMP_TABLE_LINK (coff), \
5835 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5836 \
5837 ALTERNATIVE, \
5838 \
5839 SWAP_TABLE \
5840 };
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