* arm-dis.c: Correct top-level comment.
[binutils.git] / bfd / coffcode.h
blob63a2c639b68cdd7da6edb7df5967fa966a176721
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
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
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.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 Most of this hacked by Steve Chamberlain,
25 sac@cygnus.com
29 SECTION
30 coff backends
32 BFD supports a number of different flavours of coff format.
33 The major differences between formats are the sizes and
34 alignments of fields in structures on disk, and the occasional
35 extra field.
37 Coff in all its varieties is implemented with a few common
38 files and a number of implementation specific files. For
39 example, The 88k bcs coff format is implemented in the file
40 @file{coff-m88k.c}. This file @code{#include}s
41 @file{coff/m88k.h} which defines the external structure of the
42 coff format for the 88k, and @file{coff/internal.h} which
43 defines the internal structure. @file{coff-m88k.c} also
44 defines the relocations used by the 88k format
45 @xref{Relocations}.
47 The Intel i960 processor version of coff is implemented in
48 @file{coff-i960.c}. This file has the same structure as
49 @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
50 rather than @file{coff-m88k.h}.
52 SUBSECTION
53 Porting to a new version of coff
55 The recommended method is to select from the existing
56 implementations the version of coff which is most like the one
57 you want to use. For example, we'll say that i386 coff is
58 the one you select, and that your coff flavour is called foo.
59 Copy @file{i386coff.c} to @file{foocoff.c}, copy
60 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
61 and add the lines to @file{targets.c} and @file{Makefile.in}
62 so that your new back end is used. Alter the shapes of the
63 structures in @file{../include/coff/foo.h} so that they match
64 what you need. You will probably also have to add
65 @code{#ifdef}s to the code in @file{coff/internal.h} and
66 @file{coffcode.h} if your version of coff is too wild.
68 You can verify that your new BFD backend works quite simply by
69 building @file{objdump} from the @file{binutils} directory,
70 and making sure that its version of what's going on and your
71 host system's idea (assuming it has the pretty standard coff
72 dump utility, usually called @code{att-dump} or just
73 @code{dump}) are the same. Then clean up your code, and send
74 what you've done to Cygnus. Then your stuff will be in the
75 next release, and you won't have to keep integrating it.
77 SUBSECTION
78 How the coff backend works
80 SUBSUBSECTION
81 File layout
83 The Coff backend is split into generic routines that are
84 applicable to any Coff target and routines that are specific
85 to a particular target. The target-specific routines are
86 further split into ones which are basically the same for all
87 Coff targets except that they use the external symbol format
88 or use different values for certain constants.
90 The generic routines are in @file{coffgen.c}. These routines
91 work for any Coff target. They use some hooks into the target
92 specific code; the hooks are in a @code{bfd_coff_backend_data}
93 structure, one of which exists for each target.
95 The essentially similar target-specific routines are in
96 @file{coffcode.h}. This header file includes executable C code.
97 The various Coff targets first include the appropriate Coff
98 header file, make any special defines that are needed, and
99 then include @file{coffcode.h}.
101 Some of the Coff targets then also have additional routines in
102 the target source file itself.
104 For example, @file{coff-i960.c} includes
105 @file{coff/internal.h} and @file{coff/i960.h}. It then
106 defines a few constants, such as @code{I960}, and includes
107 @file{coffcode.h}. Since the i960 has complex relocation
108 types, @file{coff-i960.c} also includes some code to
109 manipulate the i960 relocs. This code is not in
110 @file{coffcode.h} because it would not be used by any other
111 target.
113 SUBSUBSECTION
114 Bit twiddling
116 Each flavour of coff supported in BFD has its own header file
117 describing the external layout of the structures. There is also
118 an internal description of the coff layout, in
119 @file{coff/internal.h}. A major function of the
120 coff backend is swapping the bytes and twiddling the bits to
121 translate the external form of the structures into the normal
122 internal form. This is all performed in the
123 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
124 elements are different sizes between different versions of
125 coff; it is the duty of the coff version specific include file
126 to override the definitions of various packing routines in
127 @file{coffcode.h}. E.g., the size of line number entry in coff is
128 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
129 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
130 correct one. No doubt, some day someone will find a version of
131 coff which has a varying field size not catered to at the
132 moment. To port BFD, that person will have to add more @code{#defines}.
133 Three of the bit twiddling routines are exported to
134 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
135 and @code{coff_swap_lineno_in}. @code{GDB} reads the symbol
136 table on its own, but uses BFD to fix things up. More of the
137 bit twiddlers are exported for @code{gas};
138 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
139 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
140 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
141 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
142 of all the symbol table and reloc drudgery itself, thereby
143 saving the internal BFD overhead, but uses BFD to swap things
144 on the way out, making cross ports much safer. Doing so also
145 allows BFD (and thus the linker) to use the same header files
146 as @code{gas}, which makes one avenue to disaster disappear.
148 SUBSUBSECTION
149 Symbol reading
151 The simple canonical form for symbols used by BFD is not rich
152 enough to keep all the information available in a coff symbol
153 table. The back end gets around this problem by keeping the original
154 symbol table around, "behind the scenes".
156 When a symbol table is requested (through a call to
157 @code{bfd_canonicalize_symtab}), a request gets through to
158 @code{coff_get_normalized_symtab}. This reads the symbol table from
159 the coff file and swaps all the structures inside into the
160 internal form. It also fixes up all the pointers in the table
161 (represented in the file by offsets from the first symbol in
162 the table) into physical pointers to elements in the new
163 internal table. This involves some work since the meanings of
164 fields change depending upon context: a field that is a
165 pointer to another structure in the symbol table at one moment
166 may be the size in bytes of a structure at the next. Another
167 pass is made over the table. All symbols which mark file names
168 (<<C_FILE>> symbols) are modified so that the internal
169 string points to the value in the auxent (the real filename)
170 rather than the normal text associated with the symbol
171 (@code{".file"}).
173 At this time the symbol names are moved around. Coff stores
174 all symbols less than nine characters long physically
175 within the symbol table; longer strings are kept at the end of
176 the file in the string table. This pass moves all strings
177 into memory and replaces them with pointers to the strings.
179 The symbol table is massaged once again, this time to create
180 the canonical table used by the BFD application. Each symbol
181 is inspected in turn, and a decision made (using the
182 @code{sclass} field) about the various flags to set in the
183 @code{asymbol}. @xref{Symbols}. The generated canonical table
184 shares strings with the hidden internal symbol table.
186 Any linenumbers are read from the coff file too, and attached
187 to the symbols which own the functions the linenumbers belong to.
189 SUBSUBSECTION
190 Symbol writing
192 Writing a symbol to a coff file which didn't come from a coff
193 file will lose any debugging information. The @code{asymbol}
194 structure remembers the BFD from which the symbol was taken, and on
195 output the back end makes sure that the same destination target as
196 source target is present.
198 When the symbols have come from a coff file then all the
199 debugging information is preserved.
201 Symbol tables are provided for writing to the back end in a
202 vector of pointers to pointers. This allows applications like
203 the linker to accumulate and output large symbol tables
204 without having to do too much byte copying.
206 This function runs through the provided symbol table and
207 patches each symbol marked as a file place holder
208 (@code{C_FILE}) to point to the next file place holder in the
209 list. It also marks each @code{offset} field in the list with
210 the offset from the first symbol of the current symbol.
212 Another function of this procedure is to turn the canonical
213 value form of BFD into the form used by coff. Internally, BFD
214 expects symbol values to be offsets from a section base; so a
215 symbol physically at 0x120, but in a section starting at
216 0x100, would have the value 0x20. Coff expects symbols to
217 contain their final value, so symbols have their values
218 changed at this point to reflect their sum with their owning
219 section. This transformation uses the
220 <<output_section>> field of the @code{asymbol}'s
221 @code{asection} @xref{Sections}.
223 o <<coff_mangle_symbols>>
225 This routine runs though the provided symbol table and uses
226 the offsets generated by the previous pass and the pointers
227 generated when the symbol table was read in to create the
228 structured hierarchy required by coff. It changes each pointer
229 to a symbol into the index into the symbol table of the asymbol.
231 o <<coff_write_symbols>>
233 This routine runs through the symbol table and patches up the
234 symbols from their internal form into the coff way, calls the
235 bit twiddlers, and writes out the table to the file.
240 INTERNAL_DEFINITION
241 coff_symbol_type
243 DESCRIPTION
244 The hidden information for an <<asymbol>> is described in a
245 <<combined_entry_type>>:
247 CODE_FRAGMENT
249 .typedef struct coff_ptr_struct
251 . {* Remembers the offset from the first symbol in the file for
252 . this symbol. Generated by coff_renumber_symbols. *}
253 . unsigned int offset;
255 . {* Should the value of this symbol be renumbered. Used for
256 . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
257 . unsigned int fix_value : 1;
259 . {* Should the tag field of this symbol be renumbered.
260 . Created by coff_pointerize_aux. *}
261 . unsigned int fix_tag : 1;
263 . {* Should the endidx field of this symbol be renumbered.
264 . Created by coff_pointerize_aux. *}
265 . unsigned int fix_end : 1;
267 . {* Should the x_csect.x_scnlen field be renumbered.
268 . Created by coff_pointerize_aux. *}
269 . unsigned int fix_scnlen : 1;
271 . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
272 . index into the line number entries. Set by coff_slurp_symbol_table. *}
273 . unsigned int fix_line : 1;
275 . {* The container for the symbol structure as read and translated
276 . from the file. *}
277 . union
279 . union internal_auxent auxent;
280 . struct internal_syment syment;
281 . } u;
282 .} combined_entry_type;
285 .{* Each canonical asymbol really looks like this: *}
287 .typedef struct coff_symbol_struct
289 . {* The actual symbol which the rest of BFD works with *}
290 . asymbol symbol;
292 . {* A pointer to the hidden information for this symbol *}
293 . combined_entry_type *native;
295 . {* A pointer to the linenumber information for this symbol *}
296 . struct lineno_cache_entry *lineno;
298 . {* Have the line numbers been relocated yet ? *}
299 . bfd_boolean done_lineno;
300 .} coff_symbol_type;
304 #ifdef COFF_WITH_PE
305 #include "peicode.h"
306 #else
307 #include "coffswap.h"
308 #endif
310 #define STRING_SIZE_SIZE (4)
312 #define DOT_DEBUG ".debug"
313 #define GNU_LINKONCE_WI ".gnu.linkonce.wi."
315 static long sec_to_styp_flags
316 PARAMS ((const char *, flagword));
317 static bfd_boolean styp_to_sec_flags
318 PARAMS ((bfd *, PTR, const char *, asection *, flagword *));
319 static bfd_boolean coff_bad_format_hook
320 PARAMS ((bfd *, PTR));
321 static void coff_set_custom_section_alignment
322 PARAMS ((bfd *, asection *, const struct coff_section_alignment_entry *,
323 const unsigned int));
324 static bfd_boolean coff_new_section_hook
325 PARAMS ((bfd *, asection *));
326 static bfd_boolean coff_set_arch_mach_hook
327 PARAMS ((bfd *, PTR));
328 static bfd_boolean coff_write_relocs
329 PARAMS ((bfd *, int));
330 static bfd_boolean coff_set_flags
331 PARAMS ((bfd *, unsigned int *, unsigned short *));
332 static bfd_boolean coff_set_arch_mach
333 PARAMS ((bfd *, enum bfd_architecture, unsigned long)) ATTRIBUTE_UNUSED;
334 static bfd_boolean coff_compute_section_file_positions
335 PARAMS ((bfd *));
336 static bfd_boolean coff_write_object_contents
337 PARAMS ((bfd *)) ATTRIBUTE_UNUSED;
338 static bfd_boolean coff_set_section_contents
339 PARAMS ((bfd *, asection *, const PTR, file_ptr, bfd_size_type));
340 static PTR buy_and_read
341 PARAMS ((bfd *, file_ptr, bfd_size_type));
342 static bfd_boolean coff_slurp_line_table
343 PARAMS ((bfd *, asection *));
344 static bfd_boolean coff_slurp_symbol_table
345 PARAMS ((bfd *));
346 static enum coff_symbol_classification coff_classify_symbol
347 PARAMS ((bfd *, struct internal_syment *));
348 static bfd_boolean coff_slurp_reloc_table
349 PARAMS ((bfd *, asection *, asymbol **));
350 static long coff_canonicalize_reloc
351 PARAMS ((bfd *, asection *, arelent **, asymbol **));
352 #ifndef coff_mkobject_hook
353 static PTR coff_mkobject_hook
354 PARAMS ((bfd *, PTR, PTR));
355 #endif
356 #ifdef COFF_WITH_PE
357 static flagword handle_COMDAT
358 PARAMS ((bfd *, flagword, PTR, const char *, asection *));
359 #endif
360 #ifdef COFF_IMAGE_WITH_PE
361 static bfd_boolean coff_read_word
362 PARAMS ((bfd *, unsigned int *));
363 static unsigned int coff_compute_checksum
364 PARAMS ((bfd *));
365 static bfd_boolean coff_apply_checksum
366 PARAMS ((bfd *));
367 #endif
368 #ifdef TICOFF
369 static bfd_boolean ticoff0_bad_format_hook
370 PARAMS ((bfd *, PTR ));
371 static bfd_boolean ticoff1_bad_format_hook
372 PARAMS ((bfd *, PTR ));
373 #endif
375 /* void warning(); */
377 /* Return a word with STYP_* (scnhdr.s_flags) flags set to represent
378 the incoming SEC_* flags. The inverse of this function is
379 styp_to_sec_flags(). NOTE: If you add to/change this routine, you
380 should probably mirror the changes in styp_to_sec_flags(). */
382 #ifndef COFF_WITH_PE
384 /* Macros for setting debugging flags. */
385 #ifdef STYP_DEBUG
386 #define STYP_XCOFF_DEBUG STYP_DEBUG
387 #else
388 #define STYP_XCOFF_DEBUG STYP_INFO
389 #endif
391 #ifdef COFF_ALIGN_IN_S_FLAGS
392 #define STYP_DEBUG_INFO STYP_DSECT
393 #else
394 #define STYP_DEBUG_INFO STYP_INFO
395 #endif
397 static long
398 sec_to_styp_flags (sec_name, sec_flags)
399 const char *sec_name;
400 flagword sec_flags;
402 long styp_flags = 0;
404 if (!strcmp (sec_name, _TEXT))
406 styp_flags = STYP_TEXT;
408 else if (!strcmp (sec_name, _DATA))
410 styp_flags = STYP_DATA;
412 else if (!strcmp (sec_name, _BSS))
414 styp_flags = STYP_BSS;
415 #ifdef _COMMENT
417 else if (!strcmp (sec_name, _COMMENT))
419 styp_flags = STYP_INFO;
420 #endif /* _COMMENT */
421 #ifdef _LIB
423 else if (!strcmp (sec_name, _LIB))
425 styp_flags = STYP_LIB;
426 #endif /* _LIB */
427 #ifdef _LIT
429 else if (!strcmp (sec_name, _LIT))
431 styp_flags = STYP_LIT;
432 #endif /* _LIT */
434 else if (!strncmp (sec_name, DOT_DEBUG, sizeof (DOT_DEBUG) - 1))
436 /* Handle the XCOFF debug section and DWARF2 debug sections. */
437 if (!sec_name[6])
438 styp_flags = STYP_XCOFF_DEBUG;
439 else
440 styp_flags = STYP_DEBUG_INFO;
442 else if (!strncmp (sec_name, ".stab", 5))
444 styp_flags = STYP_DEBUG_INFO;
446 #ifdef COFF_LONG_SECTION_NAMES
447 else if (!strncmp (sec_name, GNU_LINKONCE_WI, sizeof (GNU_LINKONCE_WI) - 1))
449 styp_flags = STYP_DEBUG_INFO;
451 #endif
452 #ifdef RS6000COFF_C
453 else if (!strcmp (sec_name, _PAD))
455 styp_flags = STYP_PAD;
457 else if (!strcmp (sec_name, _LOADER))
459 styp_flags = STYP_LOADER;
461 else if (!strcmp (sec_name, _EXCEPT))
463 styp_flags = STYP_EXCEPT;
465 else if (!strcmp (sec_name, _TYPCHK))
467 styp_flags = STYP_TYPCHK;
469 #endif
470 /* Try and figure out what it should be */
471 else if (sec_flags & SEC_CODE)
473 styp_flags = STYP_TEXT;
475 else if (sec_flags & SEC_DATA)
477 styp_flags = STYP_DATA;
479 else if (sec_flags & SEC_READONLY)
481 #ifdef STYP_LIT /* 29k readonly text/data section */
482 styp_flags = STYP_LIT;
483 #else
484 styp_flags = STYP_TEXT;
485 #endif /* STYP_LIT */
487 else if (sec_flags & SEC_LOAD)
489 styp_flags = STYP_TEXT;
491 else if (sec_flags & SEC_ALLOC)
493 styp_flags = STYP_BSS;
496 #ifdef STYP_CLINK
497 if (sec_flags & SEC_CLINK)
498 styp_flags |= STYP_CLINK;
499 #endif
501 #ifdef STYP_BLOCK
502 if (sec_flags & SEC_BLOCK)
503 styp_flags |= STYP_BLOCK;
504 #endif
506 #ifdef STYP_NOLOAD
507 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
508 styp_flags |= STYP_NOLOAD;
509 #endif
511 return styp_flags;
514 #else /* COFF_WITH_PE */
516 /* The PE version; see above for the general comments. The non-PE
517 case seems to be more guessing, and breaks PE format; specifically,
518 .rdata is readonly, but it sure ain't text. Really, all this
519 should be set up properly in gas (or whatever assembler is in use),
520 and honor whatever objcopy/strip, etc. sent us as input. */
522 static long
523 sec_to_styp_flags (sec_name, sec_flags)
524 const char *sec_name;
525 flagword sec_flags;
527 long styp_flags = 0;
529 /* caution: there are at least three groups of symbols that have
530 very similar bits and meanings: IMAGE_SCN*, SEC_*, and STYP_*.
531 SEC_* are the BFD internal flags, used for generic BFD
532 information. STYP_* are the COFF section flags which appear in
533 COFF files. IMAGE_SCN_* are the PE section flags which appear in
534 PE files. The STYP_* flags and the IMAGE_SCN_* flags overlap,
535 but there are more IMAGE_SCN_* flags. */
537 /* FIXME: There is no gas syntax to specify the debug section flag. */
538 if (strncmp (sec_name, DOT_DEBUG, sizeof (DOT_DEBUG) - 1) == 0
539 || strncmp (sec_name, GNU_LINKONCE_WI, sizeof (GNU_LINKONCE_WI) - 1) == 0)
540 sec_flags = SEC_READONLY | SEC_DEBUGGING;
542 /* skip LOAD */
543 /* READONLY later */
544 /* skip RELOC */
545 if ((sec_flags & SEC_CODE) != 0)
546 styp_flags |= IMAGE_SCN_CNT_CODE;
547 if ((sec_flags & SEC_DATA) != 0)
548 styp_flags |= IMAGE_SCN_CNT_INITIALIZED_DATA;
549 if ((sec_flags & SEC_ALLOC) != 0 && (sec_flags & SEC_LOAD) == 0)
550 styp_flags |= IMAGE_SCN_CNT_UNINITIALIZED_DATA; /* ==STYP_BSS */
551 /* skip ROM */
552 /* skip constRUCTOR */
553 /* skip CONTENTS */
554 #ifdef STYP_NOLOAD
555 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
556 styp_flags |= STYP_NOLOAD;
557 #endif
558 if ((sec_flags & SEC_IS_COMMON) != 0)
559 styp_flags |= IMAGE_SCN_LNK_COMDAT;
560 if ((sec_flags & SEC_DEBUGGING) != 0)
561 styp_flags |= IMAGE_SCN_MEM_DISCARDABLE;
562 if ((sec_flags & SEC_EXCLUDE) != 0)
563 styp_flags |= IMAGE_SCN_LNK_REMOVE;
564 if ((sec_flags & SEC_NEVER_LOAD) != 0)
565 styp_flags |= IMAGE_SCN_LNK_REMOVE;
566 /* skip IN_MEMORY */
567 /* skip SORT */
568 if (sec_flags & SEC_LINK_ONCE)
569 styp_flags |= IMAGE_SCN_LNK_COMDAT;
570 /* skip LINK_DUPLICATES */
571 /* skip LINKER_CREATED */
573 /* For now, the read/write bits are mapped onto SEC_READONLY, even
574 though the semantics don't quite match. The bits from the input
575 are retained in pei_section_data(abfd, section)->pe_flags. */
577 styp_flags |= IMAGE_SCN_MEM_READ; /* Always readable. */
578 if ((sec_flags & SEC_READONLY) == 0)
579 styp_flags |= IMAGE_SCN_MEM_WRITE; /* Invert READONLY for write. */
580 if (sec_flags & SEC_CODE)
581 styp_flags |= IMAGE_SCN_MEM_EXECUTE; /* CODE->EXECUTE. */
582 if (sec_flags & SEC_SHARED)
583 styp_flags |= IMAGE_SCN_MEM_SHARED; /* Shared remains meaningful. */
585 return styp_flags;
588 #endif /* COFF_WITH_PE */
590 /* Return a word with SEC_* flags set to represent the incoming STYP_*
591 flags (from scnhdr.s_flags). The inverse of this function is
592 sec_to_styp_flags(). NOTE: If you add to/change this routine, you
593 should probably mirror the changes in sec_to_styp_flags(). */
595 #ifndef COFF_WITH_PE
597 static bfd_boolean
598 styp_to_sec_flags (abfd, hdr, name, section, flags_ptr)
599 bfd *abfd ATTRIBUTE_UNUSED;
600 PTR hdr;
601 const char *name;
602 asection *section ATTRIBUTE_UNUSED;
603 flagword *flags_ptr;
605 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
606 long styp_flags = internal_s->s_flags;
607 flagword sec_flags = 0;
609 #ifdef STYP_BLOCK
610 if (styp_flags & STYP_BLOCK)
611 sec_flags |= SEC_BLOCK;
612 #endif
614 #ifdef STYP_CLINK
615 if (styp_flags & STYP_CLINK)
616 sec_flags |= SEC_CLINK;
617 #endif
619 #ifdef STYP_NOLOAD
620 if (styp_flags & STYP_NOLOAD)
621 sec_flags |= SEC_NEVER_LOAD;
622 #endif /* STYP_NOLOAD */
624 /* For 386 COFF, at least, an unloadable text or data section is
625 actually a shared library section. */
626 if (styp_flags & STYP_TEXT)
628 if (sec_flags & SEC_NEVER_LOAD)
629 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
630 else
631 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
633 else if (styp_flags & STYP_DATA)
635 if (sec_flags & SEC_NEVER_LOAD)
636 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
637 else
638 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
640 else if (styp_flags & STYP_BSS)
642 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
643 if (sec_flags & SEC_NEVER_LOAD)
644 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
645 else
646 #endif
647 sec_flags |= SEC_ALLOC;
649 else if (styp_flags & STYP_INFO)
651 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
652 defined. coff_compute_section_file_positions uses
653 COFF_PAGE_SIZE to ensure that the low order bits of the
654 section VMA and the file offset match. If we don't know
655 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
656 and demand page loading of the file will fail. */
657 #if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS)
658 sec_flags |= SEC_DEBUGGING;
659 #endif
661 else if (styp_flags & STYP_PAD)
662 sec_flags = 0;
663 else if (strcmp (name, _TEXT) == 0)
665 if (sec_flags & SEC_NEVER_LOAD)
666 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
667 else
668 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
670 else if (strcmp (name, _DATA) == 0)
672 if (sec_flags & SEC_NEVER_LOAD)
673 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
674 else
675 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
677 else if (strcmp (name, _BSS) == 0)
679 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
680 if (sec_flags & SEC_NEVER_LOAD)
681 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
682 else
683 #endif
684 sec_flags |= SEC_ALLOC;
686 else if (strncmp (name, DOT_DEBUG, sizeof (DOT_DEBUG) - 1) == 0
687 #ifdef _COMMENT
688 || strcmp (name, _COMMENT) == 0
689 #endif
690 #ifdef COFF_LONG_SECTION_NAMES
691 || strncmp (name, GNU_LINKONCE_WI, sizeof (GNU_LINKONCE_WI) - 1) == 0
692 #endif
693 || strncmp (name, ".stab", 5) == 0)
695 #ifdef COFF_PAGE_SIZE
696 sec_flags |= SEC_DEBUGGING;
697 #endif
699 #ifdef _LIB
700 else if (strcmp (name, _LIB) == 0)
702 #endif
703 #ifdef _LIT
704 else if (strcmp (name, _LIT) == 0)
705 sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY;
706 #endif
707 else
708 sec_flags |= SEC_ALLOC | SEC_LOAD;
710 #ifdef STYP_LIT /* A29k readonly text/data section type. */
711 if ((styp_flags & STYP_LIT) == STYP_LIT)
712 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
713 #endif /* STYP_LIT */
715 #ifdef STYP_OTHER_LOAD /* Other loaded sections. */
716 if (styp_flags & STYP_OTHER_LOAD)
717 sec_flags = (SEC_LOAD | SEC_ALLOC);
718 #endif /* STYP_SDATA */
720 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
721 /* As a GNU extension, if the name begins with .gnu.linkonce, we
722 only link a single copy of the section. This is used to support
723 g++. g++ will emit each template expansion in its own section.
724 The symbols will be defined as weak, so that multiple definitions
725 are permitted. The GNU linker extension is to actually discard
726 all but one of the sections. */
727 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
728 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
729 #endif
731 if (flags_ptr == NULL)
732 return FALSE;
734 * flags_ptr = sec_flags;
735 return TRUE;
738 #else /* COFF_WITH_PE */
740 static flagword
741 handle_COMDAT (abfd, sec_flags, hdr, name, section)
742 bfd * abfd;
743 flagword sec_flags;
744 PTR hdr;
745 const char *name;
746 asection *section;
748 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
749 bfd_byte *esymstart, *esym, *esymend;
750 int seen_state = 0;
751 char *target_name = NULL;
753 sec_flags |= SEC_LINK_ONCE;
755 /* Unfortunately, the PE format stores essential information in
756 the symbol table, of all places. We need to extract that
757 information now, so that objdump and the linker will know how
758 to handle the section without worrying about the symbols. We
759 can't call slurp_symtab, because the linker doesn't want the
760 swapped symbols. */
762 /* COMDAT sections are special. The first symbol is the section
763 symbol, which tells what kind of COMDAT section it is. The
764 second symbol is the "comdat symbol" - the one with the
765 unique name. GNU uses the section symbol for the unique
766 name; MS uses ".text" for every comdat section. Sigh. - DJ */
768 /* This is not mirrored in sec_to_styp_flags(), but there
769 doesn't seem to be a need to, either, and it would at best be
770 rather messy. */
772 if (! _bfd_coff_get_external_symbols (abfd))
773 return sec_flags;
775 esymstart = esym = (bfd_byte *) obj_coff_external_syms (abfd);
776 esymend = esym + obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd);
778 while (esym < esymend)
780 struct internal_syment isym;
781 char buf[SYMNMLEN + 1];
782 const char *symname;
784 bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &isym);
786 if (sizeof (internal_s->s_name) > SYMNMLEN)
788 /* This case implies that the matching
789 symbol name will be in the string table. */
790 abort ();
793 if (isym.n_scnum == section->target_index)
795 /* According to the MSVC documentation, the first
796 TWO entries with the section # are both of
797 interest to us. The first one is the "section
798 symbol" (section name). The second is the comdat
799 symbol name. Here, we've found the first
800 qualifying entry; we distinguish it from the
801 second with a state flag.
803 In the case of gas-generated (at least until that
804 is fixed) .o files, it isn't necessarily the
805 second one. It may be some other later symbol.
807 Since gas also doesn't follow MS conventions and
808 emits the section similar to .text$<name>, where
809 <something> is the name we're looking for, we
810 distinguish the two as follows:
812 If the section name is simply a section name (no
813 $) we presume it's MS-generated, and look at
814 precisely the second symbol for the comdat name.
815 If the section name has a $, we assume it's
816 gas-generated, and look for <something> (whatever
817 follows the $) as the comdat symbol. */
819 /* All 3 branches use this. */
820 symname = _bfd_coff_internal_syment_name (abfd, &isym, buf);
822 if (symname == NULL)
823 abort ();
825 switch (seen_state)
827 case 0:
829 /* The first time we've seen the symbol. */
830 union internal_auxent aux;
832 /* If it isn't the stuff we're expecting, die;
833 The MS documentation is vague, but it
834 appears that the second entry serves BOTH
835 as the comdat symbol and the defining
836 symbol record (either C_STAT or C_EXT,
837 possibly with an aux entry with debug
838 information if it's a function.) It
839 appears the only way to find the second one
840 is to count. (On Intel, they appear to be
841 adjacent, but on Alpha, they have been
842 found separated.)
844 Here, we think we've found the first one,
845 but there's some checking we can do to be
846 sure. */
848 if (! (isym.n_sclass == C_STAT
849 && isym.n_type == T_NULL
850 && isym.n_value == 0))
851 abort ();
853 /* FIXME LATER: MSVC generates section names
854 like .text for comdats. Gas generates
855 names like .text$foo__Fv (in the case of a
856 function). See comment above for more. */
858 if (strcmp (name, symname) != 0)
859 _bfd_error_handler (_("%B: warning: COMDAT symbol '%s' does not match section name '%s'"),
860 abfd, symname, name);
862 seen_state = 1;
864 /* This is the section symbol. */
865 bfd_coff_swap_aux_in (abfd, (PTR) (esym + bfd_coff_symesz (abfd)),
866 isym.n_type, isym.n_sclass,
867 0, isym.n_numaux, (PTR) &aux);
869 target_name = strchr (name, '$');
870 if (target_name != NULL)
872 /* Gas mode. */
873 seen_state = 2;
874 /* Skip the `$'. */
875 target_name += 1;
878 /* FIXME: Microsoft uses NODUPLICATES and
879 ASSOCIATIVE, but gnu uses ANY and
880 SAME_SIZE. Unfortunately, gnu doesn't do
881 the comdat symbols right. So, until we can
882 fix it to do the right thing, we are
883 temporarily disabling comdats for the MS
884 types (they're used in DLLs and C++, but we
885 don't support *their* C++ libraries anyway
886 - DJ. */
888 /* Cygwin does not follow the MS style, and
889 uses ANY and SAME_SIZE where NODUPLICATES
890 and ASSOCIATIVE should be used. For
891 Interix, we just do the right thing up
892 front. */
894 switch (aux.x_scn.x_comdat)
896 case IMAGE_COMDAT_SELECT_NODUPLICATES:
897 #ifdef STRICT_PE_FORMAT
898 sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
899 #else
900 sec_flags &= ~SEC_LINK_ONCE;
901 #endif
902 break;
904 case IMAGE_COMDAT_SELECT_ANY:
905 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
906 break;
908 case IMAGE_COMDAT_SELECT_SAME_SIZE:
909 sec_flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
910 break;
912 case IMAGE_COMDAT_SELECT_EXACT_MATCH:
913 /* Not yet fully implemented ??? */
914 sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
915 break;
917 /* debug$S gets this case; other
918 implications ??? */
920 /* There may be no symbol... we'll search
921 the whole table... Is this the right
922 place to play this game? Or should we do
923 it when reading it in. */
924 case IMAGE_COMDAT_SELECT_ASSOCIATIVE:
925 #ifdef STRICT_PE_FORMAT
926 /* FIXME: This is not currently implemented. */
927 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
928 #else
929 sec_flags &= ~SEC_LINK_ONCE;
930 #endif
931 break;
933 default: /* 0 means "no symbol" */
934 /* debug$F gets this case; other
935 implications ??? */
936 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
937 break;
940 break;
942 case 2:
943 /* Gas mode: the first matching on partial name. */
945 #ifndef TARGET_UNDERSCORE
946 #define TARGET_UNDERSCORE 0
947 #endif
948 /* Is this the name we're looking for ? */
949 if (strcmp (target_name,
950 symname + (TARGET_UNDERSCORE ? 1 : 0)) != 0)
952 /* Not the name we're looking for */
953 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
954 continue;
956 /* Fall through. */
957 case 1:
958 /* MSVC mode: the lexically second symbol (or
959 drop through from the above). */
961 char *newname;
962 bfd_size_type amt;
964 /* This must the second symbol with the
965 section #. It is the actual symbol name.
966 Intel puts the two adjacent, but Alpha (at
967 least) spreads them out. */
969 amt = sizeof (struct coff_comdat_info);
970 coff_section_data (abfd, section)->comdat
971 = bfd_alloc (abfd, amt);
972 if (coff_section_data (abfd, section)->comdat == NULL)
973 abort ();
975 coff_section_data (abfd, section)->comdat->symbol =
976 (esym - esymstart) / bfd_coff_symesz (abfd);
978 amt = strlen (symname) + 1;
979 newname = bfd_alloc (abfd, amt);
980 if (newname == NULL)
981 abort ();
983 strcpy (newname, symname);
984 coff_section_data (abfd, section)->comdat->name
985 = newname;
988 goto breakloop;
992 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
995 breakloop:
996 return sec_flags;
1000 /* The PE version; see above for the general comments.
1002 Since to set the SEC_LINK_ONCE and associated flags, we have to
1003 look at the symbol table anyway, we return the symbol table index
1004 of the symbol being used as the COMDAT symbol. This is admittedly
1005 ugly, but there's really nowhere else that we have access to the
1006 required information. FIXME: Is the COMDAT symbol index used for
1007 any purpose other than objdump? */
1009 static bfd_boolean
1010 styp_to_sec_flags (abfd, hdr, name, section, flags_ptr)
1011 bfd *abfd;
1012 PTR hdr;
1013 const char *name;
1014 asection *section;
1015 flagword *flags_ptr;
1017 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
1018 long styp_flags = internal_s->s_flags;
1019 flagword sec_flags;
1020 bfd_boolean result = TRUE;
1022 /* Assume read only unless IMAGE_SCN_MEM_WRITE is specified. */
1023 sec_flags = SEC_READONLY;
1025 /* Process each flag bit in styp_flags in turn. */
1026 while (styp_flags)
1028 long flag = styp_flags & - styp_flags;
1029 char * unhandled = NULL;
1031 styp_flags &= ~ flag;
1033 /* We infer from the distinct read/write/execute bits the settings
1034 of some of the bfd flags; the actual values, should we need them,
1035 are also in pei_section_data (abfd, section)->pe_flags. */
1037 switch (flag)
1039 case STYP_DSECT:
1040 unhandled = "STYP_DSECT";
1041 break;
1042 case STYP_GROUP:
1043 unhandled = "STYP_GROUP";
1044 break;
1045 case STYP_COPY:
1046 unhandled = "STYP_COPY";
1047 break;
1048 case STYP_OVER:
1049 unhandled = "STYP_OVER";
1050 break;
1051 #ifdef SEC_NEVER_LOAD
1052 case STYP_NOLOAD:
1053 sec_flags |= SEC_NEVER_LOAD;
1054 break;
1055 #endif
1056 case IMAGE_SCN_MEM_READ:
1057 /* Ignored, assume it always to be true. */
1058 break;
1059 case IMAGE_SCN_TYPE_NO_PAD:
1060 /* Skip. */
1061 break;
1062 case IMAGE_SCN_LNK_OTHER:
1063 unhandled = "IMAGE_SCN_LNK_OTHER";
1064 break;
1065 case IMAGE_SCN_MEM_NOT_CACHED:
1066 unhandled = "IMAGE_SCN_MEM_NOT_CACHED";
1067 break;
1068 case IMAGE_SCN_MEM_NOT_PAGED:
1069 #if 0
1070 unhandled = "IMAGE_SCN_MEM_NOT_PAGED";
1071 #else
1072 /* Generate a warning message rather using the 'unhandled'
1073 variable as this will allow some .sys files generate by
1074 other toolchains to be processed. See bugzilla issue 196. */
1075 _bfd_error_handler (_("%B: Warning: Ignoring section flag IMAGE_SCN_MEM_NOT_PAGED in section %s"),
1076 abfd, name);
1077 #endif
1078 break;
1079 case IMAGE_SCN_MEM_EXECUTE:
1080 sec_flags |= SEC_CODE;
1081 break;
1082 case IMAGE_SCN_MEM_WRITE:
1083 sec_flags &= ~ SEC_READONLY;
1084 break;
1085 case IMAGE_SCN_MEM_DISCARDABLE:
1086 /* The MS PE spec sets the DISCARDABLE flag on .reloc sections
1087 but we do not want them to be labelled as debug section, since
1088 then strip would remove them. */
1089 if (strncmp (name, ".reloc", sizeof ".reloc" - 1) != 0)
1090 sec_flags |= SEC_DEBUGGING;
1091 break;
1092 case IMAGE_SCN_MEM_SHARED:
1093 sec_flags |= SEC_SHARED;
1094 break;
1095 case IMAGE_SCN_LNK_REMOVE:
1096 sec_flags |= SEC_EXCLUDE;
1097 break;
1098 case IMAGE_SCN_CNT_CODE:
1099 sec_flags |= SEC_CODE | SEC_ALLOC | SEC_LOAD;
1100 break;
1101 case IMAGE_SCN_CNT_INITIALIZED_DATA:
1102 sec_flags |= SEC_DATA | SEC_ALLOC | SEC_LOAD;
1103 break;
1104 case IMAGE_SCN_CNT_UNINITIALIZED_DATA:
1105 sec_flags |= SEC_ALLOC;
1106 break;
1107 case IMAGE_SCN_LNK_INFO:
1108 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
1109 defined. coff_compute_section_file_positions uses
1110 COFF_PAGE_SIZE to ensure that the low order bits of the
1111 section VMA and the file offset match. If we don't know
1112 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
1113 and demand page loading of the file will fail. */
1114 #ifdef COFF_PAGE_SIZE
1115 sec_flags |= SEC_DEBUGGING;
1116 #endif
1117 break;
1118 case IMAGE_SCN_LNK_COMDAT:
1119 /* COMDAT gets very special treatment. */
1120 sec_flags = handle_COMDAT (abfd, sec_flags, hdr, name, section);
1121 break;
1122 default:
1123 /* Silently ignore for now. */
1124 break;
1127 /* If the section flag was not handled, report it here. */
1128 if (unhandled != NULL)
1130 (*_bfd_error_handler)
1131 (_("%B (%s): Section flag %s (0x%x) ignored"),
1132 abfd, name, unhandled, flag);
1133 result = FALSE;
1137 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
1138 /* As a GNU extension, if the name begins with .gnu.linkonce, we
1139 only link a single copy of the section. This is used to support
1140 g++. g++ will emit each template expansion in its own section.
1141 The symbols will be defined as weak, so that multiple definitions
1142 are permitted. The GNU linker extension is to actually discard
1143 all but one of the sections. */
1144 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
1145 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1146 #endif
1148 if (flags_ptr)
1149 * flags_ptr = sec_flags;
1151 return result;
1154 #endif /* COFF_WITH_PE */
1156 #define get_index(symbol) ((symbol)->udata.i)
1159 INTERNAL_DEFINITION
1160 bfd_coff_backend_data
1162 CODE_FRAGMENT
1164 .{* COFF symbol classifications. *}
1166 .enum coff_symbol_classification
1168 . {* Global symbol. *}
1169 . COFF_SYMBOL_GLOBAL,
1170 . {* Common symbol. *}
1171 . COFF_SYMBOL_COMMON,
1172 . {* Undefined symbol. *}
1173 . COFF_SYMBOL_UNDEFINED,
1174 . {* Local symbol. *}
1175 . COFF_SYMBOL_LOCAL,
1176 . {* PE section symbol. *}
1177 . COFF_SYMBOL_PE_SECTION
1180 Special entry points for gdb to swap in coff symbol table parts:
1181 .typedef struct
1183 . void (*_bfd_coff_swap_aux_in)
1184 . PARAMS ((bfd *, PTR, int, int, int, int, PTR));
1186 . void (*_bfd_coff_swap_sym_in)
1187 . PARAMS ((bfd *, PTR, PTR));
1189 . void (*_bfd_coff_swap_lineno_in)
1190 . PARAMS ((bfd *, PTR, PTR));
1192 . unsigned int (*_bfd_coff_swap_aux_out)
1193 . PARAMS ((bfd *, PTR, int, int, int, int, PTR));
1195 . unsigned int (*_bfd_coff_swap_sym_out)
1196 . PARAMS ((bfd *, PTR, PTR));
1198 . unsigned int (*_bfd_coff_swap_lineno_out)
1199 . PARAMS ((bfd *, PTR, PTR));
1201 . unsigned int (*_bfd_coff_swap_reloc_out)
1202 . PARAMS ((bfd *, PTR, PTR));
1204 . unsigned int (*_bfd_coff_swap_filehdr_out)
1205 . PARAMS ((bfd *, PTR, PTR));
1207 . unsigned int (*_bfd_coff_swap_aouthdr_out)
1208 . PARAMS ((bfd *, PTR, PTR));
1210 . unsigned int (*_bfd_coff_swap_scnhdr_out)
1211 . PARAMS ((bfd *, PTR, PTR));
1213 . unsigned int _bfd_filhsz;
1214 . unsigned int _bfd_aoutsz;
1215 . unsigned int _bfd_scnhsz;
1216 . unsigned int _bfd_symesz;
1217 . unsigned int _bfd_auxesz;
1218 . unsigned int _bfd_relsz;
1219 . unsigned int _bfd_linesz;
1220 . unsigned int _bfd_filnmlen;
1221 . bfd_boolean _bfd_coff_long_filenames;
1222 . bfd_boolean _bfd_coff_long_section_names;
1223 . unsigned int _bfd_coff_default_section_alignment_power;
1224 . bfd_boolean _bfd_coff_force_symnames_in_strings;
1225 . unsigned int _bfd_coff_debug_string_prefix_length;
1227 . void (*_bfd_coff_swap_filehdr_in)
1228 . PARAMS ((bfd *, PTR, PTR));
1230 . void (*_bfd_coff_swap_aouthdr_in)
1231 . PARAMS ((bfd *, PTR, PTR));
1233 . void (*_bfd_coff_swap_scnhdr_in)
1234 . PARAMS ((bfd *, PTR, PTR));
1236 . void (*_bfd_coff_swap_reloc_in)
1237 . PARAMS ((bfd *abfd, PTR, PTR));
1239 . bfd_boolean (*_bfd_coff_bad_format_hook)
1240 . PARAMS ((bfd *, PTR));
1242 . bfd_boolean (*_bfd_coff_set_arch_mach_hook)
1243 . PARAMS ((bfd *, PTR));
1245 . PTR (*_bfd_coff_mkobject_hook)
1246 . PARAMS ((bfd *, PTR, PTR));
1248 . bfd_boolean (*_bfd_styp_to_sec_flags_hook)
1249 . PARAMS ((bfd *, PTR, const char *, asection *, flagword *));
1251 . void (*_bfd_set_alignment_hook)
1252 . PARAMS ((bfd *, asection *, PTR));
1254 . bfd_boolean (*_bfd_coff_slurp_symbol_table)
1255 . PARAMS ((bfd *));
1257 . bfd_boolean (*_bfd_coff_symname_in_debug)
1258 . PARAMS ((bfd *, struct internal_syment *));
1260 . bfd_boolean (*_bfd_coff_pointerize_aux_hook)
1261 . PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
1262 . unsigned int, combined_entry_type *));
1264 . bfd_boolean (*_bfd_coff_print_aux)
1265 . PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1266 . combined_entry_type *, unsigned int));
1268 . void (*_bfd_coff_reloc16_extra_cases)
1269 . PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
1270 . bfd_byte *, unsigned int *, unsigned int *));
1272 . int (*_bfd_coff_reloc16_estimate)
1273 . PARAMS ((bfd *, asection *, arelent *, unsigned int,
1274 . struct bfd_link_info *));
1276 . enum coff_symbol_classification (*_bfd_coff_classify_symbol)
1277 . PARAMS ((bfd *, struct internal_syment *));
1279 . bfd_boolean (*_bfd_coff_compute_section_file_positions)
1280 . PARAMS ((bfd *));
1282 . bfd_boolean (*_bfd_coff_start_final_link)
1283 . PARAMS ((bfd *, struct bfd_link_info *));
1285 . bfd_boolean (*_bfd_coff_relocate_section)
1286 . PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
1287 . struct internal_reloc *, struct internal_syment *, asection **));
1289 . reloc_howto_type *(*_bfd_coff_rtype_to_howto)
1290 . PARAMS ((bfd *, asection *, struct internal_reloc *,
1291 . struct coff_link_hash_entry *, struct internal_syment *,
1292 . bfd_vma *));
1294 . bfd_boolean (*_bfd_coff_adjust_symndx)
1295 . PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
1296 . struct internal_reloc *, bfd_boolean *));
1298 . bfd_boolean (*_bfd_coff_link_add_one_symbol)
1299 . PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword,
1300 . asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
1301 . struct bfd_link_hash_entry **));
1303 . bfd_boolean (*_bfd_coff_link_output_has_begun)
1304 . PARAMS ((bfd *, struct coff_final_link_info *));
1306 . bfd_boolean (*_bfd_coff_final_link_postscript)
1307 . PARAMS ((bfd *, struct coff_final_link_info *));
1309 .} bfd_coff_backend_data;
1311 .#define coff_backend_info(abfd) \
1312 . ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1314 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1315 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1317 .#define bfd_coff_swap_sym_in(a,e,i) \
1318 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1320 .#define bfd_coff_swap_lineno_in(a,e,i) \
1321 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1323 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1324 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1326 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1327 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1329 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1330 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1332 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1333 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1335 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1336 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1338 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1339 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1341 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1342 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1344 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1345 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1346 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1347 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1348 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1349 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
1350 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1351 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1352 .#define bfd_coff_long_filenames(abfd) \
1353 . (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1354 .#define bfd_coff_long_section_names(abfd) \
1355 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1356 .#define bfd_coff_default_section_alignment_power(abfd) \
1357 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1358 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1359 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1361 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1362 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1364 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1365 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1367 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1368 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1370 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1371 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1373 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1374 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1375 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1376 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
1377 . (abfd, filehdr, aouthdr))
1379 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
1380 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1381 . (abfd, scnhdr, name, section, flags_ptr))
1383 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1384 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1386 .#define bfd_coff_slurp_symbol_table(abfd)\
1387 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1389 .#define bfd_coff_symname_in_debug(abfd, sym)\
1390 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1392 .#define bfd_coff_force_symnames_in_strings(abfd)\
1393 . (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
1395 .#define bfd_coff_debug_string_prefix_length(abfd)\
1396 . (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
1398 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1399 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1400 . (abfd, file, base, symbol, aux, indaux))
1402 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
1403 . reloc, data, src_ptr, dst_ptr)\
1404 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1405 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1407 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1408 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1409 . (abfd, section, reloc, shrink, link_info))
1411 .#define bfd_coff_classify_symbol(abfd, sym)\
1412 . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1413 . (abfd, sym))
1415 .#define bfd_coff_compute_section_file_positions(abfd)\
1416 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1417 . (abfd))
1419 .#define bfd_coff_start_final_link(obfd, info)\
1420 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1421 . (obfd, info))
1422 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1423 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1424 . (obfd, info, ibfd, o, con, rel, isyms, secs))
1425 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1426 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1427 . (abfd, sec, rel, h, sym, addendp))
1428 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1429 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1430 . (obfd, info, ibfd, sec, rel, adjustedp))
1431 .#define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
1432 . value, string, cp, coll, hashp)\
1433 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1434 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1436 .#define bfd_coff_link_output_has_begun(a,p) \
1437 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
1438 .#define bfd_coff_final_link_postscript(a,p) \
1439 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
1443 /* See whether the magic number matches. */
1445 static bfd_boolean
1446 coff_bad_format_hook (abfd, filehdr)
1447 bfd * abfd ATTRIBUTE_UNUSED;
1448 PTR filehdr;
1450 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1452 if (BADMAG (*internal_f))
1453 return FALSE;
1455 /* If the optional header is NULL or not the correct size then
1456 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1457 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1458 optional header is of a different size.
1460 But the mips keeps extra stuff in it's opthdr, so dont check
1461 when doing that. */
1463 #if defined(M88) || defined(I960)
1464 if (internal_f->f_opthdr != 0 && bfd_coff_aoutsz (abfd) != internal_f->f_opthdr)
1465 return FALSE;
1466 #endif
1468 return TRUE;
1471 #ifdef TICOFF
1472 static bfd_boolean
1473 ticoff0_bad_format_hook (abfd, filehdr)
1474 bfd *abfd ATTRIBUTE_UNUSED;
1475 PTR filehdr;
1477 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1479 if (COFF0_BADMAG (*internal_f))
1480 return FALSE;
1482 return TRUE;
1484 #endif
1486 #ifdef TICOFF
1487 static bfd_boolean
1488 ticoff1_bad_format_hook (abfd, filehdr)
1489 bfd *abfd ATTRIBUTE_UNUSED;
1490 PTR filehdr;
1492 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1494 if (COFF1_BADMAG (*internal_f))
1495 return FALSE;
1497 return TRUE;
1499 #endif
1501 /* Check whether this section uses an alignment other than the
1502 default. */
1504 static void
1505 coff_set_custom_section_alignment (abfd, section, alignment_table, table_size)
1506 bfd *abfd ATTRIBUTE_UNUSED;
1507 asection *section;
1508 const struct coff_section_alignment_entry *alignment_table;
1509 const unsigned int table_size;
1511 const unsigned int default_alignment = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1512 unsigned int i;
1514 for (i = 0; i < table_size; ++i)
1516 const char *secname = bfd_get_section_name (abfd, section);
1518 if (alignment_table[i].comparison_length == (unsigned int) -1
1519 ? strcmp (alignment_table[i].name, secname) == 0
1520 : strncmp (alignment_table[i].name, secname,
1521 alignment_table[i].comparison_length) == 0)
1522 break;
1524 if (i >= table_size)
1525 return;
1527 if (alignment_table[i].default_alignment_min != COFF_ALIGNMENT_FIELD_EMPTY
1528 && default_alignment < alignment_table[i].default_alignment_min)
1529 return;
1531 if (alignment_table[i].default_alignment_max != COFF_ALIGNMENT_FIELD_EMPTY
1532 #if COFF_DEFAULT_SECTION_ALIGNMENT_POWER != 0
1533 && default_alignment > alignment_table[i].default_alignment_max
1534 #endif
1536 return;
1538 section->alignment_power = alignment_table[i].alignment_power;
1541 /* Custom section alignment records. */
1543 static const struct coff_section_alignment_entry
1544 coff_section_alignment_table[] =
1546 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1547 COFF_SECTION_ALIGNMENT_ENTRIES,
1548 #endif
1549 /* There must not be any gaps between .stabstr sections. */
1550 { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1551 1, COFF_ALIGNMENT_FIELD_EMPTY, 0 },
1552 /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */
1553 { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1554 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1555 /* Similarly for the .ctors and .dtors sections. */
1556 { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1557 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1558 { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1559 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }
1562 static const unsigned int coff_section_alignment_table_size =
1563 sizeof coff_section_alignment_table / sizeof coff_section_alignment_table[0];
1565 /* Initialize a section structure with information peculiar to this
1566 particular implementation of COFF. */
1568 static bfd_boolean
1569 coff_new_section_hook (abfd, section)
1570 bfd * abfd;
1571 asection * section;
1573 combined_entry_type *native;
1574 bfd_size_type amt;
1576 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1578 #ifdef RS6000COFF_C
1579 if (bfd_xcoff_text_align_power (abfd) != 0
1580 && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
1581 section->alignment_power = bfd_xcoff_text_align_power (abfd);
1582 if (bfd_xcoff_data_align_power (abfd) != 0
1583 && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
1584 section->alignment_power = bfd_xcoff_data_align_power (abfd);
1585 #endif
1587 /* Allocate aux records for section symbols, to store size and
1588 related info.
1590 @@ The 10 is a guess at a plausible maximum number of aux entries
1591 (but shouldn't be a constant). */
1592 amt = sizeof (combined_entry_type) * 10;
1593 native = (combined_entry_type *) bfd_zalloc (abfd, amt);
1594 if (native == NULL)
1595 return FALSE;
1597 /* We don't need to set up n_name, n_value, or n_scnum in the native
1598 symbol information, since they'll be overridden by the BFD symbol
1599 anyhow. However, we do need to set the type and storage class,
1600 in case this symbol winds up getting written out. The value 0
1601 for n_numaux is already correct. */
1603 native->u.syment.n_type = T_NULL;
1604 native->u.syment.n_sclass = C_STAT;
1606 coffsymbol (section->symbol)->native = native;
1608 coff_set_custom_section_alignment (abfd, section,
1609 coff_section_alignment_table,
1610 coff_section_alignment_table_size);
1612 return TRUE;
1615 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1617 /* Set the alignment of a BFD section. */
1619 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1621 static void
1622 coff_set_alignment_hook (abfd, section, scnhdr)
1623 bfd * abfd ATTRIBUTE_UNUSED;
1624 asection * section;
1625 PTR scnhdr;
1627 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1628 unsigned int i;
1630 #ifdef I960
1631 /* Extract ALIGN from 2**ALIGN stored in section header. */
1632 for (i = 0; i < 32; i++)
1633 if ((1 << i) >= hdr->s_align)
1634 break;
1635 #endif
1636 #ifdef TIC80COFF
1637 /* TI tools puts the alignment power in bits 8-11. */
1638 i = (hdr->s_flags >> 8) & 0xF ;
1639 #endif
1640 #ifdef COFF_DECODE_ALIGNMENT
1641 i = COFF_DECODE_ALIGNMENT(hdr->s_flags);
1642 #endif
1643 section->alignment_power = i;
1645 #ifdef coff_set_section_load_page
1646 coff_set_section_load_page (section, hdr->s_page);
1647 #endif
1650 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1651 #ifdef COFF_WITH_PE
1653 /* A couple of macros to help setting the alignment power field. */
1654 #define ALIGN_SET(field,x,y) \
1655 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
1657 section->alignment_power = y;\
1660 #define ELIFALIGN_SET(field,x,y) \
1661 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
1663 section->alignment_power = y;\
1666 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1668 static void
1669 coff_set_alignment_hook (abfd, section, scnhdr)
1670 bfd * abfd ATTRIBUTE_UNUSED;
1671 asection * section;
1672 PTR scnhdr;
1674 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1675 bfd_size_type amt;
1677 ALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_64BYTES, 6)
1678 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_32BYTES, 5)
1679 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_16BYTES, 4)
1680 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_8BYTES, 3)
1681 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_4BYTES, 2)
1682 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_2BYTES, 1)
1683 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_1BYTES, 0)
1685 /* In a PE image file, the s_paddr field holds the virtual size of a
1686 section, while the s_size field holds the raw size. We also keep
1687 the original section flag value, since not every bit can be
1688 mapped onto a generic BFD section bit. */
1689 if (coff_section_data (abfd, section) == NULL)
1691 amt = sizeof (struct coff_section_tdata);
1692 section->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
1693 if (section->used_by_bfd == NULL)
1695 /* FIXME: Return error. */
1696 abort ();
1699 if (pei_section_data (abfd, section) == NULL)
1701 amt = sizeof (struct pei_section_tdata);
1702 coff_section_data (abfd, section)->tdata = (PTR) bfd_zalloc (abfd, amt);
1703 if (coff_section_data (abfd, section)->tdata == NULL)
1705 /* FIXME: Return error. */
1706 abort ();
1709 pei_section_data (abfd, section)->virt_size = hdr->s_paddr;
1710 pei_section_data (abfd, section)->pe_flags = hdr->s_flags;
1712 section->lma = hdr->s_vaddr;
1714 /* Check for extended relocs. */
1715 if (hdr->s_flags & IMAGE_SCN_LNK_NRELOC_OVFL)
1717 struct external_reloc dst;
1718 struct internal_reloc n;
1719 file_ptr oldpos = bfd_tell (abfd);
1720 bfd_size_type relsz = bfd_coff_relsz (abfd);
1722 bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0);
1723 if (bfd_bread ((PTR) &dst, relsz, abfd) != relsz)
1724 return;
1726 coff_swap_reloc_in (abfd, &dst, &n);
1727 bfd_seek (abfd, oldpos, 0);
1728 section->reloc_count = hdr->s_nreloc = n.r_vaddr - 1;
1729 section->rel_filepos += relsz;
1731 else if (hdr->s_nreloc == 0xffff)
1732 (*_bfd_error_handler)
1733 ("%s: warning: claims to have 0xffff relocs, without overflow",
1734 bfd_get_filename (abfd));
1736 #undef ALIGN_SET
1737 #undef ELIFALIGN_SET
1739 #else /* ! COFF_WITH_PE */
1740 #ifdef RS6000COFF_C
1742 /* We grossly abuse this function to handle XCOFF overflow headers.
1743 When we see one, we correct the reloc and line number counts in the
1744 real header, and remove the section we just created. */
1746 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1748 static void
1749 coff_set_alignment_hook (abfd, section, scnhdr)
1750 bfd *abfd;
1751 asection *section;
1752 PTR scnhdr;
1754 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1755 asection *real_sec;
1756 asection **ps;
1758 if ((hdr->s_flags & STYP_OVRFLO) == 0)
1759 return;
1761 real_sec = coff_section_from_bfd_index (abfd, (int) hdr->s_nreloc);
1762 if (real_sec == NULL)
1763 return;
1765 real_sec->reloc_count = hdr->s_paddr;
1766 real_sec->lineno_count = hdr->s_vaddr;
1768 for (ps = &abfd->sections; *ps != NULL; ps = &(*ps)->next)
1770 if (*ps == section)
1772 bfd_section_list_remove (abfd, ps);
1773 --abfd->section_count;
1774 break;
1779 #else /* ! RS6000COFF_C */
1781 #define coff_set_alignment_hook \
1782 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1784 #endif /* ! RS6000COFF_C */
1785 #endif /* ! COFF_WITH_PE */
1786 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1788 #ifndef coff_mkobject
1790 static bfd_boolean coff_mkobject PARAMS ((bfd *));
1792 static bfd_boolean
1793 coff_mkobject (abfd)
1794 bfd * abfd;
1796 coff_data_type *coff;
1797 bfd_size_type amt = sizeof (coff_data_type);
1799 abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, amt);
1800 if (abfd->tdata.coff_obj_data == 0)
1801 return FALSE;
1802 coff = coff_data (abfd);
1803 coff->symbols = (coff_symbol_type *) NULL;
1804 coff->conversion_table = (unsigned int *) NULL;
1805 coff->raw_syments = (struct coff_ptr_struct *) NULL;
1806 coff->relocbase = 0;
1807 coff->local_toc_sym_map = 0;
1809 /* make_abs_section(abfd);*/
1811 return TRUE;
1813 #endif
1815 /* Create the COFF backend specific information. */
1817 #ifndef coff_mkobject_hook
1818 static PTR
1819 coff_mkobject_hook (abfd, filehdr, aouthdr)
1820 bfd * abfd;
1821 PTR filehdr;
1822 PTR aouthdr ATTRIBUTE_UNUSED;
1824 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1825 coff_data_type *coff;
1827 if (! coff_mkobject (abfd))
1828 return NULL;
1830 coff = coff_data (abfd);
1832 coff->sym_filepos = internal_f->f_symptr;
1834 /* These members communicate important constants about the symbol
1835 table to GDB's symbol-reading code. These `constants'
1836 unfortunately vary among coff implementations... */
1837 coff->local_n_btmask = N_BTMASK;
1838 coff->local_n_btshft = N_BTSHFT;
1839 coff->local_n_tmask = N_TMASK;
1840 coff->local_n_tshift = N_TSHIFT;
1841 coff->local_symesz = bfd_coff_symesz (abfd);
1842 coff->local_auxesz = bfd_coff_auxesz (abfd);
1843 coff->local_linesz = bfd_coff_linesz (abfd);
1845 coff->timestamp = internal_f->f_timdat;
1847 obj_raw_syment_count (abfd) =
1848 obj_conv_table_size (abfd) =
1849 internal_f->f_nsyms;
1851 #ifdef RS6000COFF_C
1852 if ((internal_f->f_flags & F_SHROBJ) != 0)
1853 abfd->flags |= DYNAMIC;
1854 if (aouthdr != NULL && internal_f->f_opthdr >= bfd_coff_aoutsz (abfd))
1856 struct internal_aouthdr *internal_a =
1857 (struct internal_aouthdr *) aouthdr;
1858 struct xcoff_tdata *xcoff;
1860 xcoff = xcoff_data (abfd);
1861 # ifdef U803XTOCMAGIC
1862 xcoff->xcoff64 = internal_f->f_magic == U803XTOCMAGIC;
1863 # else
1864 xcoff->xcoff64 = 0;
1865 # endif
1866 xcoff->full_aouthdr = TRUE;
1867 xcoff->toc = internal_a->o_toc;
1868 xcoff->sntoc = internal_a->o_sntoc;
1869 xcoff->snentry = internal_a->o_snentry;
1870 bfd_xcoff_text_align_power (abfd) = internal_a->o_algntext;
1871 bfd_xcoff_data_align_power (abfd) = internal_a->o_algndata;
1872 xcoff->modtype = internal_a->o_modtype;
1873 xcoff->cputype = internal_a->o_cputype;
1874 xcoff->maxdata = internal_a->o_maxdata;
1875 xcoff->maxstack = internal_a->o_maxstack;
1877 #endif
1879 #ifdef ARM
1880 /* Set the flags field from the COFF header read in. */
1881 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
1882 coff->flags = 0;
1883 #endif
1885 #ifdef COFF_WITH_PE
1886 /* FIXME: I'm not sure this is ever executed, since peicode.h
1887 defines coff_mkobject_hook. */
1888 if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
1889 abfd->flags |= HAS_DEBUG;
1890 #endif
1892 return (PTR) coff;
1894 #endif
1896 /* Determine the machine architecture and type. FIXME: This is target
1897 dependent because the magic numbers are defined in the target
1898 dependent header files. But there is no particular need for this.
1899 If the magic numbers were moved to a separate file, this function
1900 would be target independent and would also be much more successful
1901 at linking together COFF files for different architectures. */
1903 static bfd_boolean
1904 coff_set_arch_mach_hook (abfd, filehdr)
1905 bfd *abfd;
1906 PTR filehdr;
1908 unsigned long machine;
1909 enum bfd_architecture arch;
1910 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1912 /* Zero selects the default machine for an arch. */
1913 machine = 0;
1914 switch (internal_f->f_magic)
1916 #ifdef OR32_MAGIC_BIG
1917 case OR32_MAGIC_BIG:
1918 case OR32_MAGIC_LITTLE:
1919 arch = bfd_arch_or32;
1920 break;
1921 #endif
1922 #ifdef PPCMAGIC
1923 case PPCMAGIC:
1924 arch = bfd_arch_powerpc;
1925 break;
1926 #endif
1927 #ifdef I386MAGIC
1928 case I386MAGIC:
1929 case I386PTXMAGIC:
1930 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */
1931 case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */
1932 arch = bfd_arch_i386;
1933 break;
1934 #endif
1935 #ifdef IA64MAGIC
1936 case IA64MAGIC:
1937 arch = bfd_arch_ia64;
1938 break;
1939 #endif
1940 #ifdef A29K_MAGIC_BIG
1941 case A29K_MAGIC_BIG:
1942 case A29K_MAGIC_LITTLE:
1943 arch = bfd_arch_a29k;
1944 break;
1945 #endif
1946 #ifdef ARMMAGIC
1947 case ARMMAGIC:
1948 case ARMPEMAGIC:
1949 case THUMBPEMAGIC:
1950 arch = bfd_arch_arm;
1951 machine = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
1952 if (machine == bfd_mach_arm_unknown)
1954 switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK)
1956 case F_ARM_2: machine = bfd_mach_arm_2; break;
1957 case F_ARM_2a: machine = bfd_mach_arm_2a; break;
1958 case F_ARM_3: machine = bfd_mach_arm_3; break;
1959 default:
1960 case F_ARM_3M: machine = bfd_mach_arm_3M; break;
1961 case F_ARM_4: machine = bfd_mach_arm_4; break;
1962 case F_ARM_4T: machine = bfd_mach_arm_4T; break;
1963 /* The COFF header does not have enough bits available
1964 to cover all the different ARM architectures. So
1965 we interpret F_ARM_5, the highest flag value to mean
1966 "the highest ARM architecture known to BFD" which is
1967 currently the XScale. */
1968 case F_ARM_5: machine = bfd_mach_arm_XScale; break;
1971 break;
1972 #endif
1973 #ifdef MC68MAGIC
1974 case MC68MAGIC:
1975 case M68MAGIC:
1976 #ifdef MC68KBCSMAGIC
1977 case MC68KBCSMAGIC:
1978 #endif
1979 #ifdef APOLLOM68KMAGIC
1980 case APOLLOM68KMAGIC:
1981 #endif
1982 #ifdef LYNXCOFFMAGIC
1983 case LYNXCOFFMAGIC:
1984 #endif
1985 arch = bfd_arch_m68k;
1986 machine = bfd_mach_m68020;
1987 break;
1988 #endif
1989 #ifdef MAXQ20MAGIC
1990 case MAXQ20MAGIC:
1991 arch = bfd_arch_maxq;
1992 machine = 0;
1993 break;
1994 #endif
1995 #ifdef MC88MAGIC
1996 case MC88MAGIC:
1997 case MC88DMAGIC:
1998 case MC88OMAGIC:
1999 arch = bfd_arch_m88k;
2000 machine = 88100;
2001 break;
2002 #endif
2003 #ifdef Z8KMAGIC
2004 case Z8KMAGIC:
2005 arch = bfd_arch_z8k;
2006 switch (internal_f->f_flags & F_MACHMASK)
2008 case F_Z8001:
2009 machine = bfd_mach_z8001;
2010 break;
2011 case F_Z8002:
2012 machine = bfd_mach_z8002;
2013 break;
2014 default:
2015 return FALSE;
2017 break;
2018 #endif
2019 #ifdef I860
2020 case I860MAGIC:
2021 arch = bfd_arch_i860;
2022 break;
2023 #endif
2024 #ifdef I960
2025 #ifdef I960ROMAGIC
2026 case I960ROMAGIC:
2027 case I960RWMAGIC:
2028 arch = bfd_arch_i960;
2029 switch (F_I960TYPE & internal_f->f_flags)
2031 default:
2032 case F_I960CORE:
2033 machine = bfd_mach_i960_core;
2034 break;
2035 case F_I960KB:
2036 machine = bfd_mach_i960_kb_sb;
2037 break;
2038 case F_I960MC:
2039 machine = bfd_mach_i960_mc;
2040 break;
2041 case F_I960XA:
2042 machine = bfd_mach_i960_xa;
2043 break;
2044 case F_I960CA:
2045 machine = bfd_mach_i960_ca;
2046 break;
2047 case F_I960KA:
2048 machine = bfd_mach_i960_ka_sa;
2049 break;
2050 case F_I960JX:
2051 machine = bfd_mach_i960_jx;
2052 break;
2053 case F_I960HX:
2054 machine = bfd_mach_i960_hx;
2055 break;
2057 break;
2058 #endif
2059 #endif
2061 #ifdef RS6000COFF_C
2062 #ifdef XCOFF64
2063 case U64_TOCMAGIC:
2064 case U803XTOCMAGIC:
2065 #else
2066 case U802ROMAGIC:
2067 case U802WRMAGIC:
2068 case U802TOCMAGIC:
2069 #endif
2071 int cputype;
2073 if (xcoff_data (abfd)->cputype != -1)
2074 cputype = xcoff_data (abfd)->cputype & 0xff;
2075 else
2077 /* We did not get a value from the a.out header. If the
2078 file has not been stripped, we may be able to get the
2079 architecture information from the first symbol, if it
2080 is a .file symbol. */
2081 if (obj_raw_syment_count (abfd) == 0)
2082 cputype = 0;
2083 else
2085 bfd_byte *buf;
2086 struct internal_syment sym;
2087 bfd_size_type amt = bfd_coff_symesz (abfd);
2089 buf = (bfd_byte *) bfd_malloc (amt);
2090 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
2091 || bfd_bread (buf, amt, abfd) != amt)
2093 free (buf);
2094 return FALSE;
2096 bfd_coff_swap_sym_in (abfd, (PTR) buf, (PTR) &sym);
2097 if (sym.n_sclass == C_FILE)
2098 cputype = sym.n_type & 0xff;
2099 else
2100 cputype = 0;
2101 free (buf);
2105 /* FIXME: We don't handle all cases here. */
2106 switch (cputype)
2108 default:
2109 case 0:
2110 arch = bfd_xcoff_architecture (abfd);
2111 machine = bfd_xcoff_machine (abfd);
2112 break;
2114 case 1:
2115 arch = bfd_arch_powerpc;
2116 machine = bfd_mach_ppc_601;
2117 break;
2118 case 2: /* 64 bit PowerPC */
2119 arch = bfd_arch_powerpc;
2120 machine = bfd_mach_ppc_620;
2121 break;
2122 case 3:
2123 arch = bfd_arch_powerpc;
2124 machine = bfd_mach_ppc;
2125 break;
2126 case 4:
2127 arch = bfd_arch_rs6000;
2128 machine = bfd_mach_rs6k;
2129 break;
2132 break;
2133 #endif
2135 #ifdef WE32KMAGIC
2136 case WE32KMAGIC:
2137 arch = bfd_arch_we32k;
2138 break;
2139 #endif
2141 #ifdef H8300MAGIC
2142 case H8300MAGIC:
2143 arch = bfd_arch_h8300;
2144 machine = bfd_mach_h8300;
2145 /* !! FIXME this probably isn't the right place for this. */
2146 abfd->flags |= BFD_IS_RELAXABLE;
2147 break;
2148 #endif
2150 #ifdef H8300HMAGIC
2151 case H8300HMAGIC:
2152 arch = bfd_arch_h8300;
2153 machine = bfd_mach_h8300h;
2154 /* !! FIXME this probably isn't the right place for this. */
2155 abfd->flags |= BFD_IS_RELAXABLE;
2156 break;
2157 #endif
2159 #ifdef H8300SMAGIC
2160 case H8300SMAGIC:
2161 arch = bfd_arch_h8300;
2162 machine = bfd_mach_h8300s;
2163 /* !! FIXME this probably isn't the right place for this. */
2164 abfd->flags |= BFD_IS_RELAXABLE;
2165 break;
2166 #endif
2168 #ifdef H8300HNMAGIC
2169 case H8300HNMAGIC:
2170 arch = bfd_arch_h8300;
2171 machine = bfd_mach_h8300hn;
2172 /* !! FIXME this probably isn't the right place for this. */
2173 abfd->flags |= BFD_IS_RELAXABLE;
2174 break;
2175 #endif
2177 #ifdef H8300SNMAGIC
2178 case H8300SNMAGIC:
2179 arch = bfd_arch_h8300;
2180 machine = bfd_mach_h8300sn;
2181 /* !! FIXME this probably isn't the right place for this. */
2182 abfd->flags |= BFD_IS_RELAXABLE;
2183 break;
2184 #endif
2186 #ifdef SH_ARCH_MAGIC_BIG
2187 case SH_ARCH_MAGIC_BIG:
2188 case SH_ARCH_MAGIC_LITTLE:
2189 #ifdef COFF_WITH_PE
2190 case SH_ARCH_MAGIC_WINCE:
2191 #endif
2192 arch = bfd_arch_sh;
2193 break;
2194 #endif
2196 #ifdef MIPS_ARCH_MAGIC_WINCE
2197 case MIPS_ARCH_MAGIC_WINCE:
2198 arch = bfd_arch_mips;
2199 break;
2200 #endif
2202 #ifdef H8500MAGIC
2203 case H8500MAGIC:
2204 arch = bfd_arch_h8500;
2205 break;
2206 #endif
2208 #ifdef SPARCMAGIC
2209 case SPARCMAGIC:
2210 #ifdef LYNXCOFFMAGIC
2211 case LYNXCOFFMAGIC:
2212 #endif
2213 arch = bfd_arch_sparc;
2214 break;
2215 #endif
2217 #ifdef TIC30MAGIC
2218 case TIC30MAGIC:
2219 arch = bfd_arch_tic30;
2220 break;
2221 #endif
2223 #ifdef TICOFF0MAGIC
2224 #ifdef TICOFF_TARGET_ARCH
2225 /* This TI COFF section should be used by all new TI COFF v0 targets. */
2226 case TICOFF0MAGIC:
2227 arch = TICOFF_TARGET_ARCH;
2228 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2229 break;
2230 #endif
2231 #endif
2233 #ifdef TICOFF1MAGIC
2234 /* This TI COFF section should be used by all new TI COFF v1/2 targets. */
2235 /* TI COFF1 and COFF2 use the target_id field to specify which arch. */
2236 case TICOFF1MAGIC:
2237 case TICOFF2MAGIC:
2238 switch (internal_f->f_target_id)
2240 #ifdef TI_TARGET_ID
2241 case TI_TARGET_ID:
2242 arch = TICOFF_TARGET_ARCH;
2243 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2244 break;
2245 #endif
2246 default:
2247 arch = bfd_arch_obscure;
2248 (*_bfd_error_handler)
2249 (_("Unrecognized TI COFF target id '0x%x'"),
2250 internal_f->f_target_id);
2251 break;
2253 break;
2254 #endif
2256 #ifdef TIC80_ARCH_MAGIC
2257 case TIC80_ARCH_MAGIC:
2258 arch = bfd_arch_tic80;
2259 break;
2260 #endif
2262 #ifdef MCOREMAGIC
2263 case MCOREMAGIC:
2264 arch = bfd_arch_mcore;
2265 break;
2266 #endif
2268 #ifdef W65MAGIC
2269 case W65MAGIC:
2270 arch = bfd_arch_w65;
2271 break;
2272 #endif
2274 default: /* Unreadable input file type. */
2275 arch = bfd_arch_obscure;
2276 break;
2279 bfd_default_set_arch_mach (abfd, arch, machine);
2280 return TRUE;
2283 #ifdef SYMNAME_IN_DEBUG
2285 static bfd_boolean symname_in_debug_hook
2286 PARAMS ((bfd *, struct internal_syment *));
2288 static bfd_boolean
2289 symname_in_debug_hook (abfd, sym)
2290 bfd * abfd ATTRIBUTE_UNUSED;
2291 struct internal_syment *sym;
2293 return SYMNAME_IN_DEBUG (sym) != 0;
2296 #else
2298 #define symname_in_debug_hook \
2299 (bfd_boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2301 #endif
2303 #ifdef RS6000COFF_C
2305 #ifdef XCOFF64
2306 #define FORCE_SYMNAMES_IN_STRINGS
2307 #endif
2309 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2311 static bfd_boolean coff_pointerize_aux_hook
2312 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2313 unsigned int, combined_entry_type *));
2315 static bfd_boolean
2316 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2317 bfd *abfd ATTRIBUTE_UNUSED;
2318 combined_entry_type *table_base;
2319 combined_entry_type *symbol;
2320 unsigned int indaux;
2321 combined_entry_type *aux;
2323 int class = symbol->u.syment.n_sclass;
2325 if ((class == C_EXT || class == C_HIDEXT)
2326 && indaux + 1 == symbol->u.syment.n_numaux)
2328 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2330 aux->u.auxent.x_csect.x_scnlen.p =
2331 table_base + aux->u.auxent.x_csect.x_scnlen.l;
2332 aux->fix_scnlen = 1;
2335 /* Return TRUE to indicate that the caller should not do any
2336 further work on this auxent. */
2337 return TRUE;
2340 /* Return FALSE to indicate that this auxent should be handled by
2341 the caller. */
2342 return FALSE;
2345 #else
2346 #ifdef I960
2348 /* We don't want to pointerize bal entries. */
2350 static bfd_boolean coff_pointerize_aux_hook
2351 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2352 unsigned int, combined_entry_type *));
2354 static bfd_boolean
2355 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2356 bfd *abfd ATTRIBUTE_UNUSED;
2357 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2358 combined_entry_type *symbol;
2359 unsigned int indaux;
2360 combined_entry_type *aux ATTRIBUTE_UNUSED;
2362 /* Return TRUE if we don't want to pointerize this aux entry, which
2363 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2364 return (indaux == 1
2365 && (symbol->u.syment.n_sclass == C_LEAFPROC
2366 || symbol->u.syment.n_sclass == C_LEAFSTAT
2367 || symbol->u.syment.n_sclass == C_LEAFEXT));
2370 #else /* ! I960 */
2372 #define coff_pointerize_aux_hook 0
2374 #endif /* ! I960 */
2375 #endif /* ! RS6000COFF_C */
2377 /* Print an aux entry. This returns TRUE if it has printed it. */
2379 static bfd_boolean coff_print_aux
2380 PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
2381 combined_entry_type *, unsigned int));
2383 static bfd_boolean
2384 coff_print_aux (abfd, file, table_base, symbol, aux, indaux)
2385 bfd *abfd ATTRIBUTE_UNUSED;
2386 FILE *file ATTRIBUTE_UNUSED;
2387 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2388 combined_entry_type *symbol ATTRIBUTE_UNUSED;
2389 combined_entry_type *aux ATTRIBUTE_UNUSED;
2390 unsigned int indaux ATTRIBUTE_UNUSED;
2392 #ifdef RS6000COFF_C
2393 if ((symbol->u.syment.n_sclass == C_EXT
2394 || symbol->u.syment.n_sclass == C_HIDEXT)
2395 && indaux + 1 == symbol->u.syment.n_numaux)
2397 /* This is a csect entry. */
2398 fprintf (file, "AUX ");
2399 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
2401 BFD_ASSERT (! aux->fix_scnlen);
2402 #ifdef XCOFF64
2403 fprintf (file, "val %5lld", aux->u.auxent.x_csect.x_scnlen.l);
2404 #else
2405 fprintf (file, "val %5ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2406 #endif
2408 else
2410 fprintf (file, "indx ");
2411 if (! aux->fix_scnlen)
2412 #ifdef XCOFF64
2413 fprintf (file, "%4lld", aux->u.auxent.x_csect.x_scnlen.l);
2414 #else
2415 fprintf (file, "%4ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2416 #endif
2417 else
2418 fprintf (file, "%4ld",
2419 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
2421 fprintf (file,
2422 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2423 aux->u.auxent.x_csect.x_parmhash,
2424 (unsigned int) aux->u.auxent.x_csect.x_snhash,
2425 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
2426 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
2427 (unsigned int) aux->u.auxent.x_csect.x_smclas,
2428 aux->u.auxent.x_csect.x_stab,
2429 (unsigned int) aux->u.auxent.x_csect.x_snstab);
2430 return TRUE;
2432 #endif
2434 /* Return FALSE to indicate that no special action was taken. */
2435 return FALSE;
2439 SUBSUBSECTION
2440 Writing relocations
2442 To write relocations, the back end steps though the
2443 canonical relocation table and create an
2444 @code{internal_reloc}. The symbol index to use is removed from
2445 the @code{offset} field in the symbol table supplied. The
2446 address comes directly from the sum of the section base
2447 address and the relocation offset; the type is dug directly
2448 from the howto field. Then the @code{internal_reloc} is
2449 swapped into the shape of an @code{external_reloc} and written
2450 out to disk.
2454 #ifdef TARG_AUX
2456 static int compare_arelent_ptr PARAMS ((const PTR, const PTR));
2458 /* AUX's ld wants relocations to be sorted. */
2459 static int
2460 compare_arelent_ptr (x, y)
2461 const PTR x;
2462 const PTR y;
2464 const arelent **a = (const arelent **) x;
2465 const arelent **b = (const arelent **) y;
2466 bfd_size_type aadr = (*a)->address;
2467 bfd_size_type badr = (*b)->address;
2469 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
2472 #endif /* TARG_AUX */
2474 static bfd_boolean
2475 coff_write_relocs (abfd, first_undef)
2476 bfd * abfd;
2477 int first_undef;
2479 asection *s;
2481 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
2483 unsigned int i;
2484 struct external_reloc dst;
2485 arelent **p;
2487 #ifndef TARG_AUX
2488 p = s->orelocation;
2489 #else
2491 /* Sort relocations before we write them out. */
2492 bfd_size_type amt;
2494 amt = s->reloc_count;
2495 amt *= sizeof (arelent *);
2496 p = (arelent **) bfd_malloc (amt);
2497 if (p == NULL && s->reloc_count > 0)
2498 return FALSE;
2499 memcpy (p, s->orelocation, (size_t) amt);
2500 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
2502 #endif
2504 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
2505 return FALSE;
2507 #ifdef COFF_WITH_PE
2508 if (obj_pe (abfd) && s->reloc_count >= 0xffff)
2510 /* Encode real count here as first reloc. */
2511 struct internal_reloc n;
2513 memset ((PTR) & n, 0, sizeof (n));
2514 /* Add one to count *this* reloc (grr). */
2515 n.r_vaddr = s->reloc_count + 1;
2516 coff_swap_reloc_out (abfd, &n, &dst);
2517 if (bfd_bwrite ((PTR) & dst, (bfd_size_type) bfd_coff_relsz (abfd),
2518 abfd) != bfd_coff_relsz (abfd))
2519 return FALSE;
2521 #endif
2523 for (i = 0; i < s->reloc_count; i++)
2525 struct internal_reloc n;
2526 arelent *q = p[i];
2528 memset ((PTR) & n, 0, sizeof (n));
2530 /* Now we've renumbered the symbols we know where the
2531 undefined symbols live in the table. Check the reloc
2532 entries for symbols who's output bfd isn't the right one.
2533 This is because the symbol was undefined (which means
2534 that all the pointers are never made to point to the same
2535 place). This is a bad thing,'cause the symbols attached
2536 to the output bfd are indexed, so that the relocation
2537 entries know which symbol index they point to. So we
2538 have to look up the output symbol here. */
2540 if (q->sym_ptr_ptr[0]->the_bfd != abfd)
2542 int j;
2543 const char *sname = q->sym_ptr_ptr[0]->name;
2544 asymbol **outsyms = abfd->outsymbols;
2546 for (j = first_undef; outsyms[j]; j++)
2548 const char *intable = outsyms[j]->name;
2550 if (strcmp (intable, sname) == 0) {
2551 /* Got a hit, so repoint the reloc. */
2552 q->sym_ptr_ptr = outsyms + j;
2553 break;
2558 n.r_vaddr = q->address + s->vma;
2560 #ifdef R_IHCONST
2561 /* The 29k const/consth reloc pair is a real kludge. The consth
2562 part doesn't have a symbol; it has an offset. So rebuilt
2563 that here. */
2564 if (q->howto->type == R_IHCONST)
2565 n.r_symndx = q->addend;
2566 else
2567 #endif
2568 if (q->sym_ptr_ptr)
2570 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2571 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q,s))
2572 #else
2573 if ((*q->sym_ptr_ptr)->section == bfd_abs_section_ptr
2574 && ((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0)
2575 #endif
2576 /* This is a relocation relative to the absolute symbol. */
2577 n.r_symndx = -1;
2578 else
2580 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
2581 /* Take notice if the symbol reloc points to a symbol
2582 we don't have in our symbol table. What should we
2583 do for this?? */
2584 if (n.r_symndx > obj_conv_table_size (abfd))
2585 abort ();
2589 #ifdef SWAP_OUT_RELOC_OFFSET
2590 n.r_offset = q->addend;
2591 #endif
2593 #ifdef SELECT_RELOC
2594 /* Work out reloc type from what is required. */
2595 SELECT_RELOC (n, q->howto);
2596 #else
2597 n.r_type = q->howto->type;
2598 #endif
2599 coff_swap_reloc_out (abfd, &n, &dst);
2601 if (bfd_bwrite ((PTR) & dst, (bfd_size_type) bfd_coff_relsz (abfd),
2602 abfd) != bfd_coff_relsz (abfd))
2603 return FALSE;
2606 #ifdef TARG_AUX
2607 if (p != NULL)
2608 free (p);
2609 #endif
2612 return TRUE;
2615 /* Set flags and magic number of a coff file from architecture and machine
2616 type. Result is TRUE if we can represent the arch&type, FALSE if not. */
2618 static bfd_boolean
2619 coff_set_flags (abfd, magicp, flagsp)
2620 bfd * abfd;
2621 unsigned int *magicp ATTRIBUTE_UNUSED;
2622 unsigned short *flagsp ATTRIBUTE_UNUSED;
2624 switch (bfd_get_arch (abfd))
2626 #ifdef Z8KMAGIC
2627 case bfd_arch_z8k:
2628 *magicp = Z8KMAGIC;
2629 switch (bfd_get_mach (abfd))
2631 case bfd_mach_z8001:
2632 *flagsp = F_Z8001;
2633 break;
2634 case bfd_mach_z8002:
2635 *flagsp = F_Z8002;
2636 break;
2637 default:
2638 return FALSE;
2640 return TRUE;
2641 #endif
2642 #ifdef I960ROMAGIC
2644 case bfd_arch_i960:
2647 unsigned flags;
2648 *magicp = I960ROMAGIC;
2650 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2651 I960RWMAGIC); FIXME???
2653 switch (bfd_get_mach (abfd))
2655 case bfd_mach_i960_core:
2656 flags = F_I960CORE;
2657 break;
2658 case bfd_mach_i960_kb_sb:
2659 flags = F_I960KB;
2660 break;
2661 case bfd_mach_i960_mc:
2662 flags = F_I960MC;
2663 break;
2664 case bfd_mach_i960_xa:
2665 flags = F_I960XA;
2666 break;
2667 case bfd_mach_i960_ca:
2668 flags = F_I960CA;
2669 break;
2670 case bfd_mach_i960_ka_sa:
2671 flags = F_I960KA;
2672 break;
2673 case bfd_mach_i960_jx:
2674 flags = F_I960JX;
2675 break;
2676 case bfd_mach_i960_hx:
2677 flags = F_I960HX;
2678 break;
2679 default:
2680 return FALSE;
2682 *flagsp = flags;
2683 return TRUE;
2685 break;
2686 #endif
2688 #ifdef TIC30MAGIC
2689 case bfd_arch_tic30:
2690 *magicp = TIC30MAGIC;
2691 return TRUE;
2692 #endif
2694 #ifdef TICOFF_DEFAULT_MAGIC
2695 case TICOFF_TARGET_ARCH:
2696 /* If there's no indication of which version we want, use the default. */
2697 if (!abfd->xvec )
2698 *magicp = TICOFF_DEFAULT_MAGIC;
2699 else
2701 /* We may want to output in a different COFF version. */
2702 switch (abfd->xvec->name[4])
2704 case '0':
2705 *magicp = TICOFF0MAGIC;
2706 break;
2707 case '1':
2708 *magicp = TICOFF1MAGIC;
2709 break;
2710 case '2':
2711 *magicp = TICOFF2MAGIC;
2712 break;
2713 default:
2714 return FALSE;
2717 TICOFF_TARGET_MACHINE_SET (flagsp, bfd_get_mach (abfd));
2718 return TRUE;
2719 #endif
2721 #ifdef TIC80_ARCH_MAGIC
2722 case bfd_arch_tic80:
2723 *magicp = TIC80_ARCH_MAGIC;
2724 return TRUE;
2725 #endif
2726 #ifdef ARMMAGIC
2727 case bfd_arch_arm:
2728 #ifdef ARM_WINCE
2729 * magicp = ARMPEMAGIC;
2730 #else
2731 * magicp = ARMMAGIC;
2732 #endif
2733 * flagsp = 0;
2734 if (APCS_SET (abfd))
2736 if (APCS_26_FLAG (abfd))
2737 * flagsp |= F_APCS26;
2739 if (APCS_FLOAT_FLAG (abfd))
2740 * flagsp |= F_APCS_FLOAT;
2742 if (PIC_FLAG (abfd))
2743 * flagsp |= F_PIC;
2745 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2746 * flagsp |= F_INTERWORK;
2747 switch (bfd_get_mach (abfd))
2749 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2750 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2751 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2752 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2753 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2754 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2755 case bfd_mach_arm_5: * flagsp |= F_ARM_5; break;
2756 /* FIXME: we do not have F_ARM vaues greater than F_ARM_5.
2757 See also the comment in coff_set_arch_mach_hook(). */
2758 case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break;
2759 case bfd_mach_arm_5TE: * flagsp |= F_ARM_5; break;
2760 case bfd_mach_arm_XScale: * flagsp |= F_ARM_5; break;
2762 return TRUE;
2763 #endif
2764 #ifdef PPCMAGIC
2765 case bfd_arch_powerpc:
2766 *magicp = PPCMAGIC;
2767 return TRUE;
2768 break;
2769 #endif
2770 #ifdef I386MAGIC
2771 case bfd_arch_i386:
2772 *magicp = I386MAGIC;
2773 #ifdef LYNXOS
2774 /* Just overwrite the usual value if we're doing Lynx. */
2775 *magicp = LYNXCOFFMAGIC;
2776 #endif
2777 return TRUE;
2778 break;
2779 #endif
2780 #ifdef I860MAGIC
2781 case bfd_arch_i860:
2782 *magicp = I860MAGIC;
2783 return TRUE;
2784 break;
2785 #endif
2786 #ifdef IA64MAGIC
2787 case bfd_arch_ia64:
2788 *magicp = IA64MAGIC;
2789 return TRUE;
2790 break;
2791 #endif
2792 #ifdef MC68MAGIC
2793 case bfd_arch_m68k:
2794 #ifdef APOLLOM68KMAGIC
2795 *magicp = APOLLO_COFF_VERSION_NUMBER;
2796 #else
2797 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2798 #ifdef NAMES_HAVE_UNDERSCORE
2799 *magicp = MC68KBCSMAGIC;
2800 #else
2801 *magicp = MC68MAGIC;
2802 #endif
2803 #endif
2804 #ifdef LYNXOS
2805 /* Just overwrite the usual value if we're doing Lynx. */
2806 *magicp = LYNXCOFFMAGIC;
2807 #endif
2808 return TRUE;
2809 break;
2810 #endif
2812 #ifdef MC88MAGIC
2813 case bfd_arch_m88k:
2814 *magicp = MC88OMAGIC;
2815 return TRUE;
2816 break;
2817 #endif
2818 #ifdef H8300MAGIC
2819 case bfd_arch_h8300:
2820 switch (bfd_get_mach (abfd))
2822 case bfd_mach_h8300:
2823 *magicp = H8300MAGIC;
2824 return TRUE;
2825 case bfd_mach_h8300h:
2826 *magicp = H8300HMAGIC;
2827 return TRUE;
2828 case bfd_mach_h8300s:
2829 *magicp = H8300SMAGIC;
2830 return TRUE;
2831 case bfd_mach_h8300hn:
2832 *magicp = H8300HNMAGIC;
2833 return TRUE;
2834 case bfd_mach_h8300sn:
2835 *magicp = H8300SNMAGIC;
2836 return TRUE;
2838 break;
2839 #endif
2841 #ifdef SH_ARCH_MAGIC_BIG
2842 case bfd_arch_sh:
2843 #ifdef COFF_IMAGE_WITH_PE
2844 *magicp = SH_ARCH_MAGIC_WINCE;
2845 #else
2846 if (bfd_big_endian (abfd))
2847 *magicp = SH_ARCH_MAGIC_BIG;
2848 else
2849 *magicp = SH_ARCH_MAGIC_LITTLE;
2850 #endif
2851 return TRUE;
2852 break;
2853 #endif
2855 #ifdef MIPS_ARCH_MAGIC_WINCE
2856 case bfd_arch_mips:
2857 *magicp = MIPS_ARCH_MAGIC_WINCE;
2858 return TRUE;
2859 break;
2860 #endif
2862 #ifdef SPARCMAGIC
2863 case bfd_arch_sparc:
2864 *magicp = SPARCMAGIC;
2865 #ifdef LYNXOS
2866 /* Just overwrite the usual value if we're doing Lynx. */
2867 *magicp = LYNXCOFFMAGIC;
2868 #endif
2869 return TRUE;
2870 break;
2871 #endif
2873 #ifdef H8500MAGIC
2874 case bfd_arch_h8500:
2875 *magicp = H8500MAGIC;
2876 return TRUE;
2877 break;
2878 #endif
2879 #ifdef A29K_MAGIC_BIG
2880 case bfd_arch_a29k:
2881 if (bfd_big_endian (abfd))
2882 *magicp = A29K_MAGIC_BIG;
2883 else
2884 *magicp = A29K_MAGIC_LITTLE;
2885 return TRUE;
2886 break;
2887 #endif
2889 #ifdef WE32KMAGIC
2890 case bfd_arch_we32k:
2891 *magicp = WE32KMAGIC;
2892 return TRUE;
2893 break;
2894 #endif
2896 #ifdef RS6000COFF_C
2897 case bfd_arch_rs6000:
2898 #ifndef PPCMAGIC
2899 case bfd_arch_powerpc:
2900 #endif
2901 BFD_ASSERT (bfd_get_flavour (abfd) == bfd_target_xcoff_flavour);
2902 *magicp = bfd_xcoff_magic_number (abfd);
2903 return TRUE;
2904 break;
2905 #endif
2907 #ifdef MCOREMAGIC
2908 case bfd_arch_mcore:
2909 * magicp = MCOREMAGIC;
2910 return TRUE;
2911 #endif
2913 #ifdef W65MAGIC
2914 case bfd_arch_w65:
2915 *magicp = W65MAGIC;
2916 return TRUE;
2917 #endif
2919 #ifdef OR32_MAGIC_BIG
2920 case bfd_arch_or32:
2921 if (bfd_big_endian (abfd))
2922 * magicp = OR32_MAGIC_BIG;
2923 else
2924 * magicp = OR32_MAGIC_LITTLE;
2925 return TRUE;
2926 #endif
2928 #ifdef MAXQ20MAGIC
2929 case bfd_arch_maxq:
2930 *magicp = MAXQ20MAGIC;
2931 return TRUE;
2932 break;
2933 #endif
2935 default: /* Unknown architecture. */
2936 /* Fall through to "return FALSE" below, to avoid
2937 "statement never reached" errors on the one below. */
2938 break;
2941 return FALSE;
2944 static bfd_boolean
2945 coff_set_arch_mach (abfd, arch, machine)
2946 bfd * abfd;
2947 enum bfd_architecture arch;
2948 unsigned long machine;
2950 unsigned dummy1;
2951 unsigned short dummy2;
2953 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2954 return FALSE;
2956 if (arch != bfd_arch_unknown
2957 && ! coff_set_flags (abfd, &dummy1, &dummy2))
2958 return FALSE; /* We can't represent this type */
2960 return TRUE; /* We're easy ... */
2963 #ifdef COFF_IMAGE_WITH_PE
2965 /* This is used to sort sections by VMA, as required by PE image
2966 files. */
2968 static int sort_by_secaddr PARAMS ((const PTR, const PTR));
2970 static int
2971 sort_by_secaddr (arg1, arg2)
2972 const PTR arg1;
2973 const PTR arg2;
2975 const asection *a = *(const asection **) arg1;
2976 const asection *b = *(const asection **) arg2;
2978 if (a->vma < b->vma)
2979 return -1;
2980 else if (a->vma > b->vma)
2981 return 1;
2982 else
2983 return 0;
2986 #endif /* COFF_IMAGE_WITH_PE */
2988 /* Calculate the file position for each section. */
2990 #ifndef I960
2991 #define ALIGN_SECTIONS_IN_FILE
2992 #endif
2993 #if defined(TIC80COFF) || defined(TICOFF)
2994 #undef ALIGN_SECTIONS_IN_FILE
2995 #endif
2997 static bfd_boolean
2998 coff_compute_section_file_positions (abfd)
2999 bfd * abfd;
3001 asection *current;
3002 asection *previous = (asection *) NULL;
3003 file_ptr sofar = bfd_coff_filhsz (abfd);
3004 bfd_boolean align_adjust;
3005 #ifdef ALIGN_SECTIONS_IN_FILE
3006 file_ptr old_sofar;
3007 #endif
3009 #ifdef RS6000COFF_C
3010 /* On XCOFF, if we have symbols, set up the .debug section. */
3011 if (bfd_get_symcount (abfd) > 0)
3013 bfd_size_type sz;
3014 bfd_size_type i, symcount;
3015 asymbol **symp;
3017 sz = 0;
3018 symcount = bfd_get_symcount (abfd);
3019 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
3021 coff_symbol_type *cf;
3023 cf = coff_symbol_from (abfd, *symp);
3024 if (cf != NULL
3025 && cf->native != NULL
3026 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
3028 size_t len;
3030 len = strlen (bfd_asymbol_name (*symp));
3031 if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd))
3032 sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd);
3035 if (sz > 0)
3037 asection *dsec;
3039 dsec = bfd_make_section_old_way (abfd, DOT_DEBUG);
3040 if (dsec == NULL)
3041 abort ();
3042 dsec->size = sz;
3043 dsec->flags |= SEC_HAS_CONTENTS;
3046 #endif
3048 #ifdef COFF_IMAGE_WITH_PE
3049 int page_size;
3050 if (coff_data (abfd)->link_info)
3052 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
3054 /* If no file alignment has been set, default to one.
3055 This repairs 'ld -r' for arm-wince-pe target. */
3056 if (page_size == 0)
3057 page_size = 1;
3059 else
3060 page_size = PE_DEF_FILE_ALIGNMENT;
3061 #else
3062 #ifdef COFF_PAGE_SIZE
3063 int page_size = COFF_PAGE_SIZE;
3064 #endif
3065 #endif
3067 if (bfd_get_start_address (abfd))
3069 /* A start address may have been added to the original file. In this
3070 case it will need an optional header to record it. */
3071 abfd->flags |= EXEC_P;
3074 if (abfd->flags & EXEC_P)
3075 sofar += bfd_coff_aoutsz (abfd);
3076 #ifdef RS6000COFF_C
3077 else if (xcoff_data (abfd)->full_aouthdr)
3078 sofar += bfd_coff_aoutsz (abfd);
3079 else
3080 sofar += SMALL_AOUTSZ;
3081 #endif
3083 sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
3085 #ifdef RS6000COFF_C
3086 /* XCOFF handles overflows in the reloc and line number count fields
3087 by allocating a new section header to hold the correct counts. */
3088 for (current = abfd->sections; current != NULL; current = current->next)
3089 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3090 sofar += bfd_coff_scnhsz (abfd);
3091 #endif
3093 #ifdef COFF_IMAGE_WITH_PE
3095 /* PE requires the sections to be in memory order when listed in
3096 the section headers. It also does not like empty loadable
3097 sections. The sections apparently do not have to be in the
3098 right order in the image file itself, but we do need to get the
3099 target_index values right. */
3101 unsigned int count;
3102 asection **section_list;
3103 unsigned int i;
3104 int target_index;
3105 bfd_size_type amt;
3107 count = 0;
3108 for (current = abfd->sections; current != NULL; current = current->next)
3109 ++count;
3111 /* We allocate an extra cell to simplify the final loop. */
3112 amt = sizeof (struct asection *) * (count + 1);
3113 section_list = bfd_malloc (amt);
3114 if (section_list == NULL)
3115 return FALSE;
3117 i = 0;
3118 for (current = abfd->sections; current != NULL; current = current->next)
3120 section_list[i] = current;
3121 ++i;
3123 section_list[i] = NULL;
3125 qsort (section_list, count, sizeof (asection *), sort_by_secaddr);
3127 /* Rethread the linked list into sorted order; at the same time,
3128 assign target_index values. */
3129 target_index = 1;
3130 abfd->sections = section_list[0];
3131 for (i = 0; i < count; i++)
3133 current = section_list[i];
3134 current->next = section_list[i + 1];
3136 /* Later, if the section has zero size, we'll be throwing it
3137 away, so we don't want to number it now. Note that having
3138 a zero size and having real contents are different
3139 concepts: .bss has no contents, but (usually) non-zero
3140 size. */
3141 if (current->size == 0)
3143 /* Discard. However, it still might have (valid) symbols
3144 in it, so arbitrarily set it to section 1 (indexing is
3145 1-based here; usually .text). __end__ and other
3146 contents of .endsection really have this happen.
3147 FIXME: This seems somewhat dubious. */
3148 current->target_index = 1;
3150 else
3151 current->target_index = target_index++;
3153 abfd->section_tail = &current->next;
3155 free (section_list);
3157 #else /* ! COFF_IMAGE_WITH_PE */
3159 /* Set the target_index field. */
3160 int target_index;
3162 target_index = 1;
3163 for (current = abfd->sections; current != NULL; current = current->next)
3164 current->target_index = target_index++;
3166 #endif /* ! COFF_IMAGE_WITH_PE */
3168 align_adjust = FALSE;
3169 for (current = abfd->sections;
3170 current != (asection *) NULL;
3171 current = current->next)
3173 #ifdef COFF_IMAGE_WITH_PE
3174 /* With PE we have to pad each section to be a multiple of its
3175 page size too, and remember both sizes. */
3176 if (coff_section_data (abfd, current) == NULL)
3178 bfd_size_type amt = sizeof (struct coff_section_tdata);
3179 current->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
3180 if (current->used_by_bfd == NULL)
3181 return FALSE;
3183 if (pei_section_data (abfd, current) == NULL)
3185 bfd_size_type amt = sizeof (struct pei_section_tdata);
3186 coff_section_data (abfd, current)->tdata
3187 = (PTR) bfd_zalloc (abfd, amt);
3188 if (coff_section_data (abfd, current)->tdata == NULL)
3189 return FALSE;
3191 if (pei_section_data (abfd, current)->virt_size == 0)
3192 pei_section_data (abfd, current)->virt_size = current->size;
3193 #endif
3195 /* Only deal with sections which have contents. */
3196 if (!(current->flags & SEC_HAS_CONTENTS))
3197 continue;
3199 #ifdef COFF_IMAGE_WITH_PE
3200 /* Make sure we skip empty sections in a PE image. */
3201 if (current->size == 0)
3202 continue;
3203 #endif
3205 /* Align the sections in the file to the same boundary on
3206 which they are aligned in virtual memory. I960 doesn't
3207 do this (FIXME) so we can stay in sync with Intel. 960
3208 doesn't yet page from files... */
3209 #ifdef ALIGN_SECTIONS_IN_FILE
3210 if ((abfd->flags & EXEC_P) != 0)
3212 /* Make sure this section is aligned on the right boundary - by
3213 padding the previous section up if necessary. */
3215 old_sofar = sofar;
3216 #ifdef RS6000COFF_C
3217 /* AIX loader checks the text section alignment of (vma - filepos)
3218 So even though the filepos may be aligned wrt the o_algntext, for
3219 AIX executables, this check fails. This shows up when a native
3220 AIX executable is stripped with gnu strip because the default vma
3221 of native is 0x10000150 but default for gnu is 0x10000140. Gnu
3222 stripped gnu excutable passes this check because the filepos is
3223 0x0140. This problem also show up with 64 bit shared objects. The
3224 data section must also be aligned. */
3225 if (!strcmp (current->name, _TEXT)
3226 || !strcmp (current->name, _DATA))
3228 bfd_vma pad;
3229 bfd_vma align;
3231 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3233 align = 1 << current->alignment_power;
3234 pad = abs (current->vma - sofar) % align;
3236 if (pad)
3238 pad = align - pad;
3239 sofar += pad;
3242 else
3243 #else
3245 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3247 #endif
3248 if (previous != (asection *) NULL)
3249 previous->size += sofar - old_sofar;
3252 #endif
3254 /* In demand paged files the low order bits of the file offset
3255 must match the low order bits of the virtual address. */
3256 #ifdef COFF_PAGE_SIZE
3257 if ((abfd->flags & D_PAGED) != 0
3258 && (current->flags & SEC_ALLOC) != 0)
3259 sofar += (current->vma - (bfd_vma) sofar) % page_size;
3260 #endif
3261 current->filepos = sofar;
3263 #ifdef COFF_IMAGE_WITH_PE
3264 /* Set the padded size. */
3265 current->size = (current->size + page_size -1) & -page_size;
3266 #endif
3268 sofar += current->size;
3270 #ifdef ALIGN_SECTIONS_IN_FILE
3271 /* Make sure that this section is of the right size too. */
3272 if ((abfd->flags & EXEC_P) == 0)
3274 bfd_size_type old_size;
3276 old_size = current->size;
3277 current->size = BFD_ALIGN (current->size,
3278 1 << current->alignment_power);
3279 align_adjust = current->size != old_size;
3280 sofar += current->size - old_size;
3282 else
3284 old_sofar = sofar;
3285 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3286 align_adjust = sofar != old_sofar;
3287 current->size += sofar - old_sofar;
3289 #endif
3291 #ifdef COFF_IMAGE_WITH_PE
3292 /* For PE we need to make sure we pad out to the aligned
3293 size, in case the caller only writes out data to the
3294 unaligned size. */
3295 if (pei_section_data (abfd, current)->virt_size < current->size)
3296 align_adjust = TRUE;
3297 #endif
3299 #ifdef _LIB
3300 /* Force .lib sections to start at zero. The vma is then
3301 incremented in coff_set_section_contents. This is right for
3302 SVR3.2. */
3303 if (strcmp (current->name, _LIB) == 0)
3304 bfd_set_section_vma (abfd, current, 0);
3305 #endif
3307 previous = current;
3310 /* It is now safe to write to the output file. If we needed an
3311 alignment adjustment for the last section, then make sure that
3312 there is a byte at offset sofar. If there are no symbols and no
3313 relocs, then nothing follows the last section. If we don't force
3314 the last byte out, then the file may appear to be truncated. */
3315 if (align_adjust)
3317 bfd_byte b;
3319 b = 0;
3320 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
3321 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
3322 return FALSE;
3325 /* Make sure the relocations are aligned. We don't need to make
3326 sure that this byte exists, because it will only matter if there
3327 really are relocs. */
3328 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
3330 obj_relocbase (abfd) = sofar;
3331 abfd->output_has_begun = TRUE;
3333 return TRUE;
3336 #if 0
3338 /* This can never work, because it is called too late--after the
3339 section positions have been set. I can't figure out what it is
3340 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3342 /* If .file, .text, .data, .bss symbols are missing, add them. */
3343 /* @@ Should we only be adding missing symbols, or overriding the aux
3344 values for existing section symbols? */
3345 static bfd_boolean
3346 coff_add_missing_symbols (abfd)
3347 bfd *abfd;
3349 unsigned int nsyms = bfd_get_symcount (abfd);
3350 asymbol **sympp = abfd->outsymbols;
3351 asymbol **sympp2;
3352 unsigned int i;
3353 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
3354 bfd_size_type amt;
3356 for (i = 0; i < nsyms; i++)
3358 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
3359 const char *name;
3361 if (csym)
3363 /* Only do this if there is a coff representation of the input
3364 symbol. */
3365 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
3367 need_file = 0;
3368 continue;
3370 name = csym->symbol.name;
3371 if (!name)
3372 continue;
3373 if (!strcmp (name, _TEXT))
3374 need_text = 0;
3375 #ifdef APOLLO_M68
3376 else if (!strcmp (name, ".wtext"))
3377 need_text = 0;
3378 #endif
3379 else if (!strcmp (name, _DATA))
3380 need_data = 0;
3381 else if (!strcmp (name, _BSS))
3382 need_bss = 0;
3385 /* Now i == bfd_get_symcount (abfd). */
3386 /* @@ For now, don't deal with .file symbol. */
3387 need_file = 0;
3389 if (!need_text && !need_data && !need_bss && !need_file)
3390 return TRUE;
3391 nsyms += need_text + need_data + need_bss + need_file;
3392 amt = nsyms;
3393 amt *= sizeof (asymbol *);
3394 sympp2 = (asymbol **) bfd_alloc (abfd, amt);
3395 if (!sympp2)
3396 return FALSE;
3397 memcpy (sympp2, sympp, i * sizeof (asymbol *));
3399 if (need_file)
3400 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3401 abort ();
3403 if (need_text)
3404 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
3405 if (need_data)
3406 sympp2[i++] = coff_section_symbol (abfd, _DATA);
3407 if (need_bss)
3408 sympp2[i++] = coff_section_symbol (abfd, _BSS);
3409 BFD_ASSERT (i == nsyms);
3410 bfd_set_symtab (abfd, sympp2, nsyms);
3411 return TRUE;
3414 #endif /* 0 */
3416 #ifdef COFF_IMAGE_WITH_PE
3418 static unsigned int pelength;
3419 static unsigned int peheader;
3421 static bfd_boolean
3422 coff_read_word (abfd, value)
3423 bfd *abfd;
3424 unsigned int *value;
3426 unsigned char b[2];
3427 int status;
3429 status = bfd_bread (b, (bfd_size_type) 2, abfd);
3430 if (status < 1)
3432 *value = 0;
3433 return FALSE;
3436 if (status == 1)
3437 *value = (unsigned int) b[0];
3438 else
3439 *value = (unsigned int) (b[0] + (b[1] << 8));
3441 pelength += (unsigned int) status;
3443 return TRUE;
3446 static unsigned int
3447 coff_compute_checksum (abfd)
3448 bfd *abfd;
3450 bfd_boolean more_data;
3451 file_ptr filepos;
3452 unsigned int value;
3453 unsigned int total;
3455 total = 0;
3456 pelength = 0;
3457 filepos = (file_ptr) 0;
3461 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
3462 return 0;
3464 more_data = coff_read_word (abfd, &value);
3465 total += value;
3466 total = 0xffff & (total + (total >> 0x10));
3467 filepos += 2;
3469 while (more_data);
3471 return (0xffff & (total + (total >> 0x10)));
3474 static bfd_boolean
3475 coff_apply_checksum (abfd)
3476 bfd *abfd;
3478 unsigned int computed;
3479 unsigned int checksum = 0;
3481 if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0)
3482 return FALSE;
3484 if (!coff_read_word (abfd, &peheader))
3485 return FALSE;
3487 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3488 return FALSE;
3490 checksum = 0;
3491 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3493 if (bfd_seek (abfd, peheader, SEEK_SET) != 0)
3494 return FALSE;
3496 computed = coff_compute_checksum (abfd);
3498 checksum = computed + pelength;
3500 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3501 return FALSE;
3503 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3505 return TRUE;
3508 #endif /* COFF_IMAGE_WITH_PE */
3510 /* SUPPRESS 558 */
3511 /* SUPPRESS 529 */
3512 static bfd_boolean
3513 coff_write_object_contents (abfd)
3514 bfd * abfd;
3516 asection *current;
3517 bfd_boolean hasrelocs = FALSE;
3518 bfd_boolean haslinno = FALSE;
3519 bfd_boolean hasdebug = FALSE;
3520 file_ptr scn_base;
3521 file_ptr reloc_base;
3522 file_ptr lineno_base;
3523 file_ptr sym_base;
3524 unsigned long reloc_size = 0, reloc_count = 0;
3525 unsigned long lnno_size = 0;
3526 bfd_boolean long_section_names;
3527 asection *text_sec = NULL;
3528 asection *data_sec = NULL;
3529 asection *bss_sec = NULL;
3530 struct internal_filehdr internal_f;
3531 struct internal_aouthdr internal_a;
3532 #ifdef COFF_LONG_SECTION_NAMES
3533 size_t string_size = STRING_SIZE_SIZE;
3534 #endif
3536 bfd_set_error (bfd_error_system_call);
3538 /* Make a pass through the symbol table to count line number entries and
3539 put them into the correct asections. */
3541 lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd);
3543 if (! abfd->output_has_begun)
3545 if (! coff_compute_section_file_positions (abfd))
3546 return FALSE;
3549 reloc_base = obj_relocbase (abfd);
3551 /* Work out the size of the reloc and linno areas. */
3553 for (current = abfd->sections; current != NULL; current =
3554 current->next)
3556 #ifdef COFF_WITH_PE
3557 /* We store the actual reloc count in the first reloc's addr. */
3558 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3559 reloc_count ++;
3560 #endif
3561 reloc_count += current->reloc_count;
3564 reloc_size = reloc_count * bfd_coff_relsz (abfd);
3566 lineno_base = reloc_base + reloc_size;
3567 sym_base = lineno_base + lnno_size;
3569 /* Indicate in each section->line_filepos its actual file address. */
3570 for (current = abfd->sections; current != NULL; current =
3571 current->next)
3573 if (current->lineno_count)
3575 current->line_filepos = lineno_base;
3576 current->moving_line_filepos = lineno_base;
3577 lineno_base += current->lineno_count * bfd_coff_linesz (abfd);
3579 else
3581 current->line_filepos = 0;
3583 if (current->reloc_count)
3585 current->rel_filepos = reloc_base;
3586 reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
3587 #ifdef COFF_WITH_PE
3588 /* Extra reloc to hold real count. */
3589 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3590 reloc_base += bfd_coff_relsz (abfd);
3591 #endif
3593 else
3595 current->rel_filepos = 0;
3599 /* Write section headers to the file. */
3600 internal_f.f_nscns = 0;
3602 if ((abfd->flags & EXEC_P) != 0)
3603 scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
3604 else
3606 scn_base = bfd_coff_filhsz (abfd);
3607 #ifdef RS6000COFF_C
3608 #ifndef XCOFF64
3609 if (xcoff_data (abfd)->full_aouthdr)
3610 scn_base += bfd_coff_aoutsz (abfd);
3611 else
3612 scn_base += SMALL_AOUTSZ;
3613 #endif
3614 #endif
3617 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
3618 return FALSE;
3620 long_section_names = FALSE;
3621 for (current = abfd->sections;
3622 current != NULL;
3623 current = current->next)
3625 struct internal_scnhdr section;
3626 bfd_boolean is_reloc_section = FALSE;
3628 #ifdef COFF_IMAGE_WITH_PE
3629 if (strcmp (current->name, ".reloc") == 0)
3631 is_reloc_section = TRUE;
3632 hasrelocs = TRUE;
3633 pe_data (abfd)->has_reloc_section = 1;
3635 #endif
3637 internal_f.f_nscns++;
3639 strncpy (section.s_name, current->name, SCNNMLEN);
3641 #ifdef COFF_LONG_SECTION_NAMES
3642 /* Handle long section names as in PE. This must be compatible
3643 with the code in coff_write_symbols and _bfd_coff_final_link. */
3645 size_t len;
3647 len = strlen (current->name);
3648 if (len > SCNNMLEN)
3650 memset (section.s_name, 0, SCNNMLEN);
3651 sprintf (section.s_name, "/%lu", (unsigned long) string_size);
3652 string_size += len + 1;
3653 long_section_names = TRUE;
3656 #endif
3658 #ifdef _LIB
3659 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3660 Ian Taylor <ian@cygnus.com>. */
3661 if (strcmp (current->name, _LIB) == 0)
3662 section.s_vaddr = 0;
3663 else
3664 #endif
3665 section.s_vaddr = current->vma;
3666 section.s_paddr = current->lma;
3667 section.s_size = current->size;
3668 #ifdef coff_get_section_load_page
3669 section.s_page = coff_get_section_load_page (current);
3670 #endif
3672 #ifdef COFF_WITH_PE
3673 section.s_paddr = 0;
3674 #endif
3675 #ifdef COFF_IMAGE_WITH_PE
3676 /* Reminder: s_paddr holds the virtual size of the section. */
3677 if (coff_section_data (abfd, current) != NULL
3678 && pei_section_data (abfd, current) != NULL)
3679 section.s_paddr = pei_section_data (abfd, current)->virt_size;
3680 else
3681 section.s_paddr = 0;
3682 #endif
3684 /* If this section has no size or is unloadable then the scnptr
3685 will be 0 too. */
3686 if (current->size == 0
3687 || (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
3688 section.s_scnptr = 0;
3689 else
3690 section.s_scnptr = current->filepos;
3692 section.s_relptr = current->rel_filepos;
3693 section.s_lnnoptr = current->line_filepos;
3694 section.s_nreloc = current->reloc_count;
3695 section.s_nlnno = current->lineno_count;
3696 #ifndef COFF_IMAGE_WITH_PE
3697 /* In PEI, relocs come in the .reloc section. */
3698 if (current->reloc_count != 0)
3699 hasrelocs = TRUE;
3700 #endif
3701 if (current->lineno_count != 0)
3702 haslinno = TRUE;
3703 if ((current->flags & SEC_DEBUGGING) != 0
3704 && ! is_reloc_section)
3705 hasdebug = TRUE;
3707 #ifdef RS6000COFF_C
3708 #ifndef XCOFF64
3709 /* Indicate the use of an XCOFF overflow section header. */
3710 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3712 section.s_nreloc = 0xffff;
3713 section.s_nlnno = 0xffff;
3715 #endif
3716 #endif
3718 section.s_flags = sec_to_styp_flags (current->name, current->flags);
3720 if (!strcmp (current->name, _TEXT))
3721 text_sec = current;
3722 else if (!strcmp (current->name, _DATA))
3723 data_sec = current;
3724 else if (!strcmp (current->name, _BSS))
3725 bss_sec = current;
3727 #ifdef I960
3728 section.s_align = (current->alignment_power
3729 ? 1 << current->alignment_power
3730 : 0);
3731 #endif
3732 #ifdef TIC80COFF
3733 /* TI COFF puts the alignment power in bits 8-11 of the flags. */
3734 section.s_flags |= (current->alignment_power & 0xF) << 8;
3735 #endif
3736 #ifdef COFF_ENCODE_ALIGNMENT
3737 COFF_ENCODE_ALIGNMENT(section, current->alignment_power);
3738 #endif
3740 #ifdef COFF_IMAGE_WITH_PE
3741 /* Suppress output of the sections if they are null. ld
3742 includes the bss and data sections even if there is no size
3743 assigned to them. NT loader doesn't like it if these section
3744 headers are included if the sections themselves are not
3745 needed. See also coff_compute_section_file_positions. */
3746 if (section.s_size == 0)
3747 internal_f.f_nscns--;
3748 else
3749 #endif
3751 SCNHDR buff;
3752 bfd_size_type amt = bfd_coff_scnhsz (abfd);
3754 if (coff_swap_scnhdr_out (abfd, &section, &buff) == 0
3755 || bfd_bwrite ((PTR) &buff, amt, abfd) != amt)
3756 return FALSE;
3759 #ifdef COFF_WITH_PE
3760 /* PE stores COMDAT section information in the symbol table. If
3761 this section is supposed to have some COMDAT info, track down
3762 the symbol in the symbol table and modify it. */
3763 if ((current->flags & SEC_LINK_ONCE) != 0)
3765 unsigned int i, count;
3766 asymbol **psym;
3767 coff_symbol_type *csym = NULL;
3768 asymbol **psymsec;
3770 psymsec = NULL;
3771 count = bfd_get_symcount (abfd);
3772 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
3774 if ((*psym)->section != current)
3775 continue;
3777 /* Remember the location of the first symbol in this
3778 section. */
3779 if (psymsec == NULL)
3780 psymsec = psym;
3782 /* See if this is the section symbol. */
3783 if (strcmp ((*psym)->name, current->name) == 0)
3785 csym = coff_symbol_from (abfd, *psym);
3786 if (csym == NULL
3787 || csym->native == NULL
3788 || csym->native->u.syment.n_numaux < 1
3789 || csym->native->u.syment.n_sclass != C_STAT
3790 || csym->native->u.syment.n_type != T_NULL)
3791 continue;
3793 /* Here *PSYM is the section symbol for CURRENT. */
3795 break;
3799 /* Did we find it?
3800 Note that we might not if we're converting the file from
3801 some other object file format. */
3802 if (i < count)
3804 combined_entry_type *aux;
3806 /* We don't touch the x_checksum field. The
3807 x_associated field is not currently supported. */
3809 aux = csym->native + 1;
3810 switch (current->flags & SEC_LINK_DUPLICATES)
3812 case SEC_LINK_DUPLICATES_DISCARD:
3813 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
3814 break;
3816 case SEC_LINK_DUPLICATES_ONE_ONLY:
3817 aux->u.auxent.x_scn.x_comdat =
3818 IMAGE_COMDAT_SELECT_NODUPLICATES;
3819 break;
3821 case SEC_LINK_DUPLICATES_SAME_SIZE:
3822 aux->u.auxent.x_scn.x_comdat =
3823 IMAGE_COMDAT_SELECT_SAME_SIZE;
3824 break;
3826 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
3827 aux->u.auxent.x_scn.x_comdat =
3828 IMAGE_COMDAT_SELECT_EXACT_MATCH;
3829 break;
3832 /* The COMDAT symbol must be the first symbol from this
3833 section in the symbol table. In order to make this
3834 work, we move the COMDAT symbol before the first
3835 symbol we found in the search above. It's OK to
3836 rearrange the symbol table at this point, because
3837 coff_renumber_symbols is going to rearrange it
3838 further and fix up all the aux entries. */
3839 if (psym != psymsec)
3841 asymbol *hold;
3842 asymbol **pcopy;
3844 hold = *psym;
3845 for (pcopy = psym; pcopy > psymsec; pcopy--)
3846 pcopy[0] = pcopy[-1];
3847 *psymsec = hold;
3851 #endif /* COFF_WITH_PE */
3854 #ifdef RS6000COFF_C
3855 #ifndef XCOFF64
3856 /* XCOFF handles overflows in the reloc and line number count fields
3857 by creating a new section header to hold the correct values. */
3858 for (current = abfd->sections; current != NULL; current = current->next)
3860 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3862 struct internal_scnhdr scnhdr;
3863 SCNHDR buff;
3864 bfd_size_type amt;
3866 internal_f.f_nscns++;
3867 strncpy (&(scnhdr.s_name[0]), current->name, 8);
3868 scnhdr.s_paddr = current->reloc_count;
3869 scnhdr.s_vaddr = current->lineno_count;
3870 scnhdr.s_size = 0;
3871 scnhdr.s_scnptr = 0;
3872 scnhdr.s_relptr = current->rel_filepos;
3873 scnhdr.s_lnnoptr = current->line_filepos;
3874 scnhdr.s_nreloc = current->target_index;
3875 scnhdr.s_nlnno = current->target_index;
3876 scnhdr.s_flags = STYP_OVRFLO;
3877 amt = bfd_coff_scnhsz (abfd);
3878 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
3879 || bfd_bwrite ((PTR) &buff, amt, abfd) != amt)
3880 return FALSE;
3883 #endif
3884 #endif
3886 /* OK, now set up the filehdr... */
3888 /* Don't include the internal abs section in the section count */
3890 /* We will NOT put a fucking timestamp in the header here. Every time you
3891 put it back, I will come in and take it out again. I'm sorry. This
3892 field does not belong here. We fill it with a 0 so it compares the
3893 same but is not a reasonable time. -- gnu@cygnus.com */
3894 internal_f.f_timdat = 0;
3895 internal_f.f_flags = 0;
3897 if (abfd->flags & EXEC_P)
3898 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3899 else
3901 internal_f.f_opthdr = 0;
3902 #ifdef RS6000COFF_C
3903 #ifndef XCOFF64
3904 if (xcoff_data (abfd)->full_aouthdr)
3905 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3906 else
3907 internal_f.f_opthdr = SMALL_AOUTSZ;
3908 #endif
3909 #endif
3912 if (!hasrelocs)
3913 internal_f.f_flags |= F_RELFLG;
3914 if (!haslinno)
3915 internal_f.f_flags |= F_LNNO;
3916 if (abfd->flags & EXEC_P)
3917 internal_f.f_flags |= F_EXEC;
3918 #ifdef COFF_IMAGE_WITH_PE
3919 if (! hasdebug)
3920 internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED;
3921 if (pe_data (abfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE)
3922 internal_f.f_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
3923 #endif
3925 #ifdef COFF_WITH_PE
3926 internal_f.f_flags |= IMAGE_FILE_32BIT_MACHINE;
3927 #else
3928 if (bfd_little_endian (abfd))
3929 internal_f.f_flags |= F_AR32WR;
3930 else
3931 internal_f.f_flags |= F_AR32W;
3932 #endif
3934 #ifdef TI_TARGET_ID
3935 /* Target id is used in TI COFF v1 and later; COFF0 won't use this field,
3936 but it doesn't hurt to set it internally. */
3937 internal_f.f_target_id = TI_TARGET_ID;
3938 #endif
3939 #ifdef TIC80_TARGET_ID
3940 internal_f.f_target_id = TIC80_TARGET_ID;
3941 #endif
3943 /* FIXME, should do something about the other byte orders and
3944 architectures. */
3946 #ifdef RS6000COFF_C
3947 if ((abfd->flags & DYNAMIC) != 0)
3948 internal_f.f_flags |= F_SHROBJ;
3949 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
3950 internal_f.f_flags |= F_DYNLOAD;
3951 #endif
3953 memset (&internal_a, 0, sizeof internal_a);
3955 /* Set up architecture-dependent stuff. */
3957 unsigned int magic = 0;
3958 unsigned short flags = 0;
3960 coff_set_flags (abfd, &magic, &flags);
3961 internal_f.f_magic = magic;
3962 internal_f.f_flags |= flags;
3963 /* ...and the "opt"hdr... */
3965 #ifdef A29K
3966 #ifdef ULTRA3 /* NYU's machine */
3967 /* FIXME: This is a bogus check. I really want to see if there
3968 is a .shbss or a .shdata section, if so then set the magic
3969 number to indicate a shared data executable. */
3970 if (internal_f.f_nscns >= 7)
3971 internal_a.magic = SHMAGIC; /* Shared magic. */
3972 else
3973 #endif /* ULTRA3 */
3974 internal_a.magic = NMAGIC; /* Assume separate i/d. */
3975 #define __A_MAGIC_SET__
3976 #endif /* A29K */
3977 #ifdef TICOFF_AOUT_MAGIC
3978 internal_a.magic = TICOFF_AOUT_MAGIC;
3979 #define __A_MAGIC_SET__
3980 #endif
3981 #ifdef TIC80COFF
3982 internal_a.magic = TIC80_ARCH_MAGIC;
3983 #define __A_MAGIC_SET__
3984 #endif /* TIC80 */
3985 #ifdef I860
3986 /* FIXME: What are the a.out magic numbers for the i860? */
3987 internal_a.magic = 0;
3988 #define __A_MAGIC_SET__
3989 #endif /* I860 */
3990 #ifdef I960
3991 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
3992 #define __A_MAGIC_SET__
3993 #endif /* I960 */
3994 #if M88
3995 #define __A_MAGIC_SET__
3996 internal_a.magic = PAGEMAGICBCS;
3997 #endif /* M88 */
3999 #if APOLLO_M68
4000 #define __A_MAGIC_SET__
4001 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
4002 #endif
4004 #if defined(M68) || defined(WE32K) || defined(M68K)
4005 #define __A_MAGIC_SET__
4006 #if defined(LYNXOS)
4007 internal_a.magic = LYNXCOFFMAGIC;
4008 #else
4009 #if defined(TARG_AUX)
4010 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
4011 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
4012 PAGEMAGICEXECSWAPPED);
4013 #else
4014 #if defined (PAGEMAGICPEXECPAGED)
4015 internal_a.magic = PAGEMAGICPEXECPAGED;
4016 #endif
4017 #endif /* TARG_AUX */
4018 #endif /* LYNXOS */
4019 #endif /* M68 || WE32K || M68K */
4021 #if defined(ARM)
4022 #define __A_MAGIC_SET__
4023 internal_a.magic = ZMAGIC;
4024 #endif
4026 #if defined(PPC_PE)
4027 #define __A_MAGIC_SET__
4028 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
4029 #endif
4031 #if defined MCORE_PE
4032 #define __A_MAGIC_SET__
4033 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
4034 #endif
4036 #if defined(I386)
4037 #define __A_MAGIC_SET__
4038 #if defined(LYNXOS)
4039 internal_a.magic = LYNXCOFFMAGIC;
4040 #else /* LYNXOS */
4041 internal_a.magic = ZMAGIC;
4042 #endif /* LYNXOS */
4043 #endif /* I386 */
4045 #if defined(IA64)
4046 #define __A_MAGIC_SET__
4047 internal_a.magic = ZMAGIC;
4048 #endif /* IA64 */
4050 #if defined(SPARC)
4051 #define __A_MAGIC_SET__
4052 #if defined(LYNXOS)
4053 internal_a.magic = LYNXCOFFMAGIC;
4054 #endif /* LYNXOS */
4055 #endif /* SPARC */
4057 #ifdef RS6000COFF_C
4058 #define __A_MAGIC_SET__
4059 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
4060 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
4061 RS6K_AOUTHDR_OMAGIC;
4062 #endif
4064 #if defined(SH) && defined(COFF_WITH_PE)
4065 #define __A_MAGIC_SET__
4066 internal_a.magic = SH_PE_MAGIC;
4067 #endif
4069 #if defined(MIPS) && defined(COFF_WITH_PE)
4070 #define __A_MAGIC_SET__
4071 internal_a.magic = MIPS_PE_MAGIC;
4072 #endif
4074 #ifdef OR32
4075 #define __A_MAGIC_SET__
4076 internal_a.magic = NMAGIC; /* Assume separate i/d. */
4077 #endif
4079 #ifdef MAXQ20MAGIC
4080 #define __A_MAGIC_SET__
4081 internal_a.magic = MAXQ20MAGIC;
4082 #endif
4084 #ifndef __A_MAGIC_SET__
4085 #include "Your aouthdr magic number is not being set!"
4086 #else
4087 #undef __A_MAGIC_SET__
4088 #endif
4091 /* FIXME: Does anybody ever set this to another value? */
4092 internal_a.vstamp = 0;
4094 /* Now should write relocs, strings, syms. */
4095 obj_sym_filepos (abfd) = sym_base;
4097 if (bfd_get_symcount (abfd) != 0)
4099 int firstundef;
4100 #if 0
4101 if (!coff_add_missing_symbols (abfd))
4102 return FALSE;
4103 #endif
4104 if (!coff_renumber_symbols (abfd, &firstundef))
4105 return FALSE;
4106 coff_mangle_symbols (abfd);
4107 if (! coff_write_symbols (abfd))
4108 return FALSE;
4109 if (! coff_write_linenumbers (abfd))
4110 return FALSE;
4111 if (! coff_write_relocs (abfd, firstundef))
4112 return FALSE;
4114 #ifdef COFF_LONG_SECTION_NAMES
4115 else if (long_section_names && ! obj_coff_strings_written (abfd))
4117 /* If we have long section names we have to write out the string
4118 table even if there are no symbols. */
4119 if (! coff_write_symbols (abfd))
4120 return FALSE;
4122 #endif
4123 #ifdef COFF_IMAGE_WITH_PE
4124 #ifdef PPC_PE
4125 else if ((abfd->flags & EXEC_P) != 0)
4127 bfd_byte b;
4129 /* PowerPC PE appears to require that all executable files be
4130 rounded up to the page size. */
4131 b = 0;
4132 if (bfd_seek (abfd,
4133 (file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
4134 SEEK_SET) != 0
4135 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
4136 return FALSE;
4138 #endif
4139 #endif
4141 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
4142 backend linker, and obj_raw_syment_count is not valid until after
4143 coff_write_symbols is called. */
4144 if (obj_raw_syment_count (abfd) != 0)
4146 internal_f.f_symptr = sym_base;
4147 #ifdef RS6000COFF_C
4148 /* AIX appears to require that F_RELFLG not be set if there are
4149 local symbols but no relocations. */
4150 internal_f.f_flags &=~ F_RELFLG;
4151 #endif
4153 else
4155 if (long_section_names)
4156 internal_f.f_symptr = sym_base;
4157 else
4158 internal_f.f_symptr = 0;
4159 internal_f.f_flags |= F_LSYMS;
4162 if (text_sec)
4164 internal_a.tsize = text_sec->size;
4165 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
4167 if (data_sec)
4169 internal_a.dsize = data_sec->size;
4170 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
4172 if (bss_sec)
4174 internal_a.bsize = bss_sec->size;
4175 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
4176 internal_a.data_start = bss_sec->vma;
4179 internal_a.entry = bfd_get_start_address (abfd);
4180 internal_f.f_nsyms = obj_raw_syment_count (abfd);
4182 #ifdef RS6000COFF_C
4183 if (xcoff_data (abfd)->full_aouthdr)
4185 bfd_vma toc;
4186 asection *loader_sec;
4188 internal_a.vstamp = 1;
4190 internal_a.o_snentry = xcoff_data (abfd)->snentry;
4191 if (internal_a.o_snentry == 0)
4192 internal_a.entry = (bfd_vma) -1;
4194 if (text_sec != NULL)
4196 internal_a.o_sntext = text_sec->target_index;
4197 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
4199 else
4201 internal_a.o_sntext = 0;
4202 internal_a.o_algntext = 0;
4204 if (data_sec != NULL)
4206 internal_a.o_sndata = data_sec->target_index;
4207 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
4209 else
4211 internal_a.o_sndata = 0;
4212 internal_a.o_algndata = 0;
4214 loader_sec = bfd_get_section_by_name (abfd, ".loader");
4215 if (loader_sec != NULL)
4216 internal_a.o_snloader = loader_sec->target_index;
4217 else
4218 internal_a.o_snloader = 0;
4219 if (bss_sec != NULL)
4220 internal_a.o_snbss = bss_sec->target_index;
4221 else
4222 internal_a.o_snbss = 0;
4224 toc = xcoff_data (abfd)->toc;
4225 internal_a.o_toc = toc;
4226 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
4228 internal_a.o_modtype = xcoff_data (abfd)->modtype;
4229 if (xcoff_data (abfd)->cputype != -1)
4230 internal_a.o_cputype = xcoff_data (abfd)->cputype;
4231 else
4233 switch (bfd_get_arch (abfd))
4235 case bfd_arch_rs6000:
4236 internal_a.o_cputype = 4;
4237 break;
4238 case bfd_arch_powerpc:
4239 if (bfd_get_mach (abfd) == bfd_mach_ppc)
4240 internal_a.o_cputype = 3;
4241 else
4242 internal_a.o_cputype = 1;
4243 break;
4244 default:
4245 abort ();
4248 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
4249 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
4251 #endif
4253 /* now write them */
4254 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
4255 return FALSE;
4258 char * buff;
4259 bfd_size_type amount = bfd_coff_filhsz (abfd);
4261 buff = bfd_malloc (amount);
4262 if (buff == NULL)
4263 return FALSE;
4265 bfd_coff_swap_filehdr_out (abfd, (PTR) &internal_f, (PTR) buff);
4266 amount = bfd_bwrite ((PTR) buff, amount, abfd);
4268 free (buff);
4270 if (amount != bfd_coff_filhsz (abfd))
4271 return FALSE;
4274 if (abfd->flags & EXEC_P)
4276 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
4277 include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)). */
4278 char * buff;
4279 bfd_size_type amount = bfd_coff_aoutsz (abfd);
4281 buff = bfd_malloc (amount);
4282 if (buff == NULL)
4283 return FALSE;
4285 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) buff);
4286 amount = bfd_bwrite ((PTR) buff, amount, abfd);
4288 free (buff);
4290 if (amount != bfd_coff_aoutsz (abfd))
4291 return FALSE;
4293 #ifdef COFF_IMAGE_WITH_PE
4294 if (! coff_apply_checksum (abfd))
4295 return FALSE;
4296 #endif
4298 #ifdef RS6000COFF_C
4299 else
4301 AOUTHDR buff;
4302 size_t size;
4304 /* XCOFF seems to always write at least a small a.out header. */
4305 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff);
4306 if (xcoff_data (abfd)->full_aouthdr)
4307 size = bfd_coff_aoutsz (abfd);
4308 else
4309 size = SMALL_AOUTSZ;
4310 if (bfd_bwrite ((PTR) &buff, (bfd_size_type) size, abfd) != size)
4311 return FALSE;
4313 #endif
4315 return TRUE;
4318 static bfd_boolean
4319 coff_set_section_contents (abfd, section, location, offset, count)
4320 bfd * abfd;
4321 sec_ptr section;
4322 const PTR location;
4323 file_ptr offset;
4324 bfd_size_type count;
4326 if (! abfd->output_has_begun) /* Set by bfd.c handler. */
4328 if (! coff_compute_section_file_positions (abfd))
4329 return FALSE;
4332 #if defined(_LIB) && !defined(TARG_AUX)
4334 /* The physical address field of a .lib section is used to hold the
4335 number of shared libraries in the section. This code counts the
4336 number of sections being written, and increments the lma field
4337 with the number.
4339 I have found no documentation on the contents of this section.
4340 Experimentation indicates that the section contains zero or more
4341 records, each of which has the following structure:
4343 - a (four byte) word holding the length of this record, in words,
4344 - a word that always seems to be set to "2",
4345 - the path to a shared library, null-terminated and then padded
4346 to a whole word boundary.
4348 bfd_assert calls have been added to alert if an attempt is made
4349 to write a section which doesn't follow these assumptions. The
4350 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4351 <robertl@arnet.com> (Thanks!).
4353 Gvran Uddeborg <gvran@uddeborg.pp.se>. */
4355 if (strcmp (section->name, _LIB) == 0)
4357 bfd_byte *rec, *recend;
4359 rec = (bfd_byte *) location;
4360 recend = rec + count;
4361 while (rec < recend)
4363 ++section->lma;
4364 rec += bfd_get_32 (abfd, rec) * 4;
4367 BFD_ASSERT (rec == recend);
4370 #endif
4372 /* Don't write out bss sections - one way to do this is to
4373 see if the filepos has not been set. */
4374 if (section->filepos == 0)
4375 return TRUE;
4377 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
4378 return FALSE;
4380 if (count == 0)
4381 return TRUE;
4383 return bfd_bwrite (location, count, abfd) == count;
4385 #if 0
4386 static bfd_boolean
4387 coff_close_and_cleanup (abfd)
4388 bfd *abfd;
4390 if (!bfd_read_p (abfd))
4391 switch (abfd->format)
4393 case bfd_archive:
4394 if (!_bfd_write_archive_contents (abfd))
4395 return FALSE;
4396 break;
4397 case bfd_object:
4398 if (!coff_write_object_contents (abfd))
4399 return FALSE;
4400 break;
4401 default:
4402 bfd_set_error (bfd_error_invalid_operation);
4403 return FALSE;
4406 /* We depend on bfd_close to free all the memory on the objalloc. */
4407 return TRUE;
4410 #endif
4412 static PTR
4413 buy_and_read (abfd, where, size)
4414 bfd *abfd;
4415 file_ptr where;
4416 bfd_size_type size;
4418 PTR area = (PTR) bfd_alloc (abfd, size);
4419 if (!area)
4420 return (NULL);
4421 if (bfd_seek (abfd, where, SEEK_SET) != 0
4422 || bfd_bread (area, size, abfd) != size)
4423 return (NULL);
4424 return (area);
4425 } /* buy_and_read() */
4428 SUBSUBSECTION
4429 Reading linenumbers
4431 Creating the linenumber table is done by reading in the entire
4432 coff linenumber table, and creating another table for internal use.
4434 A coff linenumber table is structured so that each function
4435 is marked as having a line number of 0. Each line within the
4436 function is an offset from the first line in the function. The
4437 base of the line number information for the table is stored in
4438 the symbol associated with the function.
4440 Note: The PE format uses line number 0 for a flag indicating a
4441 new source file.
4443 The information is copied from the external to the internal
4444 table, and each symbol which marks a function is marked by
4445 pointing its...
4447 How does this work ?
4451 static bfd_boolean
4452 coff_slurp_line_table (abfd, asect)
4453 bfd *abfd;
4454 asection *asect;
4456 LINENO *native_lineno;
4457 alent *lineno_cache;
4458 bfd_size_type amt;
4460 BFD_ASSERT (asect->lineno == (alent *) NULL);
4462 amt = (bfd_size_type) bfd_coff_linesz (abfd) * asect->lineno_count;
4463 native_lineno = (LINENO *) buy_and_read (abfd, asect->line_filepos, amt);
4464 if (native_lineno == NULL)
4466 (*_bfd_error_handler)
4467 (_("%B: warning: line number table read failed"), abfd);
4468 return FALSE;
4470 amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent);
4471 lineno_cache = (alent *) bfd_alloc (abfd, amt);
4472 if (lineno_cache == NULL)
4473 return FALSE;
4474 else
4476 unsigned int counter = 0;
4477 alent *cache_ptr = lineno_cache;
4478 LINENO *src = native_lineno;
4480 while (counter < asect->lineno_count)
4482 struct internal_lineno dst;
4484 bfd_coff_swap_lineno_in (abfd, src, &dst);
4485 cache_ptr->line_number = dst.l_lnno;
4487 if (cache_ptr->line_number == 0)
4489 bfd_boolean warned;
4490 bfd_signed_vma symndx;
4491 coff_symbol_type *sym;
4493 warned = FALSE;
4494 symndx = dst.l_addr.l_symndx;
4495 if (symndx < 0
4496 || (bfd_vma) symndx >= obj_raw_syment_count (abfd))
4498 (*_bfd_error_handler)
4499 (_("%B: warning: illegal symbol index %ld in line numbers"),
4500 abfd, dst.l_addr.l_symndx);
4501 symndx = 0;
4502 warned = TRUE;
4504 /* FIXME: We should not be casting between ints and
4505 pointers like this. */
4506 sym = ((coff_symbol_type *)
4507 ((symndx + obj_raw_syments (abfd))
4508 ->u.syment._n._n_n._n_zeroes));
4509 cache_ptr->u.sym = (asymbol *) sym;
4510 if (sym->lineno != NULL && ! warned)
4512 (*_bfd_error_handler)
4513 (_("%B: warning: duplicate line number information for `%s'"),
4514 abfd, bfd_asymbol_name (&sym->symbol));
4516 sym->lineno = cache_ptr;
4518 else
4520 cache_ptr->u.offset = dst.l_addr.l_paddr
4521 - bfd_section_vma (abfd, asect);
4522 } /* If no linenumber expect a symbol index */
4524 cache_ptr++;
4525 src++;
4526 counter++;
4528 cache_ptr->line_number = 0;
4531 asect->lineno = lineno_cache;
4532 /* FIXME, free native_lineno here, or use alloca or something. */
4533 return TRUE;
4536 /* Slurp in the symbol table, converting it to generic form. Note
4537 that if coff_relocate_section is defined, the linker will read
4538 symbols via coff_link_add_symbols, rather than via this routine. */
4540 static bfd_boolean
4541 coff_slurp_symbol_table (abfd)
4542 bfd * abfd;
4544 combined_entry_type *native_symbols;
4545 coff_symbol_type *cached_area;
4546 unsigned int *table_ptr;
4547 bfd_size_type amt;
4548 unsigned int number_of_symbols = 0;
4550 if (obj_symbols (abfd))
4551 return TRUE;
4553 /* Read in the symbol table. */
4554 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
4555 return FALSE;
4557 /* Allocate enough room for all the symbols in cached form. */
4558 amt = obj_raw_syment_count (abfd);
4559 amt *= sizeof (coff_symbol_type);
4560 cached_area = (coff_symbol_type *) bfd_alloc (abfd, amt);
4561 if (cached_area == NULL)
4562 return FALSE;
4564 amt = obj_raw_syment_count (abfd);
4565 amt *= sizeof (unsigned int);
4566 table_ptr = (unsigned int *) bfd_alloc (abfd, amt);
4568 if (table_ptr == NULL)
4569 return FALSE;
4570 else
4572 coff_symbol_type *dst = cached_area;
4573 unsigned int last_native_index = obj_raw_syment_count (abfd);
4574 unsigned int this_index = 0;
4576 while (this_index < last_native_index)
4578 combined_entry_type *src = native_symbols + this_index;
4579 table_ptr[this_index] = number_of_symbols;
4580 dst->symbol.the_bfd = abfd;
4582 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
4583 /* We use the native name field to point to the cached field. */
4584 src->u.syment._n._n_n._n_zeroes = (long) dst;
4585 dst->symbol.section = coff_section_from_bfd_index (abfd,
4586 src->u.syment.n_scnum);
4587 dst->symbol.flags = 0;
4588 dst->done_lineno = FALSE;
4590 switch (src->u.syment.n_sclass)
4592 #ifdef I960
4593 case C_LEAFEXT:
4594 #if 0
4595 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
4596 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4597 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4598 #endif
4599 /* Fall through to next case. */
4600 #endif
4602 case C_EXT:
4603 case C_WEAKEXT:
4604 #if defined ARM
4605 case C_THUMBEXT:
4606 case C_THUMBEXTFUNC:
4607 #endif
4608 #ifdef RS6000COFF_C
4609 case C_HIDEXT:
4610 #endif
4611 #ifdef C_SYSTEM
4612 case C_SYSTEM: /* System Wide variable. */
4613 #endif
4614 #ifdef COFF_WITH_PE
4615 /* In PE, 0x68 (104) denotes a section symbol. */
4616 case C_SECTION:
4617 /* In PE, 0x69 (105) denotes a weak external symbol. */
4618 case C_NT_WEAK:
4619 #endif
4620 switch (coff_classify_symbol (abfd, &src->u.syment))
4622 case COFF_SYMBOL_GLOBAL:
4623 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4624 #if defined COFF_WITH_PE
4625 /* PE sets the symbol to a value relative to the
4626 start of the section. */
4627 dst->symbol.value = src->u.syment.n_value;
4628 #else
4629 dst->symbol.value = (src->u.syment.n_value
4630 - dst->symbol.section->vma);
4631 #endif
4632 if (ISFCN ((src->u.syment.n_type)))
4634 /* A function ext does not go at the end of a
4635 file. */
4636 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4638 break;
4640 case COFF_SYMBOL_COMMON:
4641 dst->symbol.section = bfd_com_section_ptr;
4642 dst->symbol.value = src->u.syment.n_value;
4643 break;
4645 case COFF_SYMBOL_UNDEFINED:
4646 dst->symbol.section = bfd_und_section_ptr;
4647 dst->symbol.value = 0;
4648 break;
4650 case COFF_SYMBOL_PE_SECTION:
4651 dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM;
4652 dst->symbol.value = 0;
4653 break;
4655 case COFF_SYMBOL_LOCAL:
4656 dst->symbol.flags = BSF_LOCAL;
4657 #if defined COFF_WITH_PE
4658 /* PE sets the symbol to a value relative to the
4659 start of the section. */
4660 dst->symbol.value = src->u.syment.n_value;
4661 #else
4662 dst->symbol.value = (src->u.syment.n_value
4663 - dst->symbol.section->vma);
4664 #endif
4665 if (ISFCN ((src->u.syment.n_type)))
4666 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4667 break;
4670 #ifdef RS6000COFF_C
4671 /* A symbol with a csect entry should not go at the end. */
4672 if (src->u.syment.n_numaux > 0)
4673 dst->symbol.flags |= BSF_NOT_AT_END;
4674 #endif
4676 #ifdef COFF_WITH_PE
4677 if (src->u.syment.n_sclass == C_NT_WEAK)
4678 dst->symbol.flags |= BSF_WEAK;
4680 if (src->u.syment.n_sclass == C_SECTION
4681 && src->u.syment.n_scnum > 0)
4682 dst->symbol.flags = BSF_LOCAL;
4683 #endif
4684 if (src->u.syment.n_sclass == C_WEAKEXT)
4685 dst->symbol.flags |= BSF_WEAK;
4687 break;
4689 case C_STAT: /* Static. */
4690 #ifdef I960
4691 case C_LEAFSTAT: /* Static leaf procedure. */
4692 #endif
4693 #if defined ARM
4694 case C_THUMBSTAT: /* Thumb static. */
4695 case C_THUMBLABEL: /* Thumb label. */
4696 case C_THUMBSTATFUNC:/* Thumb static function. */
4697 #endif
4698 case C_LABEL: /* Label. */
4699 if (src->u.syment.n_scnum == N_DEBUG)
4700 dst->symbol.flags = BSF_DEBUGGING;
4701 else
4702 dst->symbol.flags = BSF_LOCAL;
4704 /* Base the value as an index from the base of the
4705 section, if there is one. */
4706 if (dst->symbol.section)
4708 #if defined COFF_WITH_PE
4709 /* PE sets the symbol to a value relative to the
4710 start of the section. */
4711 dst->symbol.value = src->u.syment.n_value;
4712 #else
4713 dst->symbol.value = (src->u.syment.n_value
4714 - dst->symbol.section->vma);
4715 #endif
4717 else
4718 dst->symbol.value = src->u.syment.n_value;
4719 break;
4721 case C_MOS: /* Member of structure. */
4722 case C_EOS: /* End of structure. */
4723 #ifdef NOTDEF /* C_AUTOARG has the same value. */
4724 #ifdef C_GLBLREG
4725 case C_GLBLREG: /* A29k-specific storage class. */
4726 #endif
4727 #endif
4728 case C_REGPARM: /* Register parameter. */
4729 case C_REG: /* register variable. */
4730 /* C_AUTOARG conflicts with TI COFF C_UEXT. */
4731 #if !defined (TIC80COFF) && !defined (TICOFF)
4732 #ifdef C_AUTOARG
4733 case C_AUTOARG: /* 960-specific storage class. */
4734 #endif
4735 #endif
4736 case C_TPDEF: /* Type definition. */
4737 case C_ARG:
4738 case C_AUTO: /* Automatic variable. */
4739 case C_FIELD: /* Bit field. */
4740 case C_ENTAG: /* Enumeration tag. */
4741 case C_MOE: /* Member of enumeration. */
4742 case C_MOU: /* Member of union. */
4743 case C_UNTAG: /* Union tag. */
4744 dst->symbol.flags = BSF_DEBUGGING;
4745 dst->symbol.value = (src->u.syment.n_value);
4746 break;
4748 case C_FILE: /* File name. */
4749 case C_STRTAG: /* Structure tag. */
4750 #ifdef RS6000COFF_C
4751 case C_GSYM:
4752 case C_LSYM:
4753 case C_PSYM:
4754 case C_RSYM:
4755 case C_RPSYM:
4756 case C_STSYM:
4757 case C_TCSYM:
4758 case C_BCOMM:
4759 case C_ECOML:
4760 case C_ECOMM:
4761 case C_DECL:
4762 case C_ENTRY:
4763 case C_FUN:
4764 case C_ESTAT:
4765 #endif
4766 dst->symbol.flags = BSF_DEBUGGING;
4767 dst->symbol.value = (src->u.syment.n_value);
4768 break;
4770 #ifdef RS6000COFF_C
4771 case C_BINCL: /* Beginning of include file. */
4772 case C_EINCL: /* Ending of include file. */
4773 /* The value is actually a pointer into the line numbers
4774 of the file. We locate the line number entry, and
4775 set the section to the section which contains it, and
4776 the value to the index in that section. */
4778 asection *sec;
4780 dst->symbol.flags = BSF_DEBUGGING;
4781 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4782 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
4783 && ((file_ptr) (sec->line_filepos
4784 + sec->lineno_count * bfd_coff_linesz (abfd))
4785 > (file_ptr) src->u.syment.n_value))
4786 break;
4787 if (sec == NULL)
4788 dst->symbol.value = 0;
4789 else
4791 dst->symbol.section = sec;
4792 dst->symbol.value = ((src->u.syment.n_value
4793 - sec->line_filepos)
4794 / bfd_coff_linesz (abfd));
4795 src->fix_line = 1;
4798 break;
4800 case C_BSTAT:
4801 dst->symbol.flags = BSF_DEBUGGING;
4803 /* The value is actually a symbol index. Save a pointer
4804 to the symbol instead of the index. FIXME: This
4805 should use a union. */
4806 src->u.syment.n_value =
4807 (long) (native_symbols + src->u.syment.n_value);
4808 dst->symbol.value = src->u.syment.n_value;
4809 src->fix_value = 1;
4810 break;
4811 #endif
4813 case C_BLOCK: /* ".bb" or ".eb". */
4814 case C_FCN: /* ".bf" or ".ef" (or PE ".lf"). */
4815 case C_EFCN: /* Physical end of function. */
4816 #if defined COFF_WITH_PE
4817 /* PE sets the symbol to a value relative to the start
4818 of the section. */
4819 dst->symbol.value = src->u.syment.n_value;
4820 if (strcmp (dst->symbol.name, ".bf") != 0)
4822 /* PE uses funny values for .ef and .lf; don't
4823 relocate them. */
4824 dst->symbol.flags = BSF_DEBUGGING;
4826 else
4827 dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC;
4828 #else
4829 /* Base the value as an index from the base of the
4830 section. */
4831 dst->symbol.flags = BSF_LOCAL;
4832 dst->symbol.value = (src->u.syment.n_value
4833 - dst->symbol.section->vma);
4834 #endif
4835 break;
4837 case C_STATLAB: /* Static load time label. */
4838 dst->symbol.value = src->u.syment.n_value;
4839 dst->symbol.flags = BSF_GLOBAL;
4840 break;
4842 case C_NULL:
4843 /* PE DLLs sometimes have zeroed out symbols for some
4844 reason. Just ignore them without a warning. */
4845 if (src->u.syment.n_type == 0
4846 && src->u.syment.n_value == 0
4847 && src->u.syment.n_scnum == 0)
4848 break;
4849 /* Fall through. */
4850 case C_EXTDEF: /* External definition. */
4851 case C_ULABEL: /* Undefined label. */
4852 case C_USTATIC: /* Undefined static. */
4853 #ifndef COFF_WITH_PE
4854 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4855 class to represent a section symbol. */
4856 case C_LINE: /* line # reformatted as symbol table entry. */
4857 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4858 case C_ALIAS: /* Duplicate tag. */
4859 #endif
4860 /* New storage classes for TI COFF. */
4861 #if defined(TIC80COFF) || defined(TICOFF)
4862 case C_UEXT: /* Tentative external definition. */
4863 #endif
4864 case C_EXTLAB: /* External load time label. */
4865 case C_HIDDEN: /* Ext symbol in dmert public lib. */
4866 default:
4867 (*_bfd_error_handler)
4868 (_("%B: Unrecognized storage class %d for %s symbol `%s'"),
4869 abfd, src->u.syment.n_sclass,
4870 dst->symbol.section->name, dst->symbol.name);
4871 dst->symbol.flags = BSF_DEBUGGING;
4872 dst->symbol.value = (src->u.syment.n_value);
4873 break;
4876 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4878 dst->native = src;
4880 dst->symbol.udata.i = 0;
4881 dst->lineno = (alent *) NULL;
4882 this_index += (src->u.syment.n_numaux) + 1;
4883 dst++;
4884 number_of_symbols++;
4888 obj_symbols (abfd) = cached_area;
4889 obj_raw_syments (abfd) = native_symbols;
4891 bfd_get_symcount (abfd) = number_of_symbols;
4892 obj_convert (abfd) = table_ptr;
4893 /* Slurp the line tables for each section too. */
4895 asection *p;
4897 p = abfd->sections;
4898 while (p)
4900 coff_slurp_line_table (abfd, p);
4901 p = p->next;
4905 return TRUE;
4906 } /* coff_slurp_symbol_table() */
4908 /* Classify a COFF symbol. A couple of targets have globally visible
4909 symbols which are not class C_EXT, and this handles those. It also
4910 recognizes some special PE cases. */
4912 static enum coff_symbol_classification
4913 coff_classify_symbol (abfd, syment)
4914 bfd *abfd;
4915 struct internal_syment *syment;
4917 /* FIXME: This partially duplicates the switch in
4918 coff_slurp_symbol_table. */
4919 switch (syment->n_sclass)
4921 case C_EXT:
4922 case C_WEAKEXT:
4923 #ifdef I960
4924 case C_LEAFEXT:
4925 #endif
4926 #ifdef ARM
4927 case C_THUMBEXT:
4928 case C_THUMBEXTFUNC:
4929 #endif
4930 #ifdef C_SYSTEM
4931 case C_SYSTEM:
4932 #endif
4933 #ifdef COFF_WITH_PE
4934 case C_NT_WEAK:
4935 #endif
4936 if (syment->n_scnum == 0)
4938 if (syment->n_value == 0)
4939 return COFF_SYMBOL_UNDEFINED;
4940 else
4941 return COFF_SYMBOL_COMMON;
4943 return COFF_SYMBOL_GLOBAL;
4945 default:
4946 break;
4949 #ifdef COFF_WITH_PE
4950 if (syment->n_sclass == C_STAT)
4952 if (syment->n_scnum == 0)
4954 /* The Microsoft compiler sometimes generates these if a
4955 small static function is inlined every time it is used.
4956 The function is discarded, but the symbol table entry
4957 remains. */
4958 return COFF_SYMBOL_LOCAL;
4961 #ifdef STRICT_PE_FORMAT
4962 /* This is correct for Microsoft generated objects, but it
4963 breaks gas generated objects. */
4965 if (syment->n_value == 0)
4967 asection *sec;
4968 char buf[SYMNMLEN + 1];
4970 sec = coff_section_from_bfd_index (abfd, syment->n_scnum);
4971 if (sec != NULL
4972 && (strcmp (bfd_get_section_name (abfd, sec),
4973 _bfd_coff_internal_syment_name (abfd, syment, buf))
4974 == 0))
4975 return COFF_SYMBOL_PE_SECTION;
4977 #endif
4979 return COFF_SYMBOL_LOCAL;
4982 if (syment->n_sclass == C_SECTION)
4984 /* In some cases in a DLL generated by the Microsoft linker, the
4985 n_value field will contain garbage. FIXME: This should
4986 probably be handled by the swapping function instead. */
4987 syment->n_value = 0;
4988 if (syment->n_scnum == 0)
4989 return COFF_SYMBOL_UNDEFINED;
4990 return COFF_SYMBOL_PE_SECTION;
4992 #endif /* COFF_WITH_PE */
4994 /* If it is not a global symbol, we presume it is a local symbol. */
4996 if (syment->n_scnum == 0)
4998 char buf[SYMNMLEN + 1];
5000 (*_bfd_error_handler)
5001 (_("warning: %B: local symbol `%s' has no section"),
5002 abfd, _bfd_coff_internal_syment_name (abfd, syment, buf));
5005 return COFF_SYMBOL_LOCAL;
5009 SUBSUBSECTION
5010 Reading relocations
5012 Coff relocations are easily transformed into the internal BFD form
5013 (@code{arelent}).
5015 Reading a coff relocation table is done in the following stages:
5017 o Read the entire coff relocation table into memory.
5019 o Process each relocation in turn; first swap it from the
5020 external to the internal form.
5022 o Turn the symbol referenced in the relocation's symbol index
5023 into a pointer into the canonical symbol table.
5024 This table is the same as the one returned by a call to
5025 @code{bfd_canonicalize_symtab}. The back end will call that
5026 routine and save the result if a canonicalization hasn't been done.
5028 o The reloc index is turned into a pointer to a howto
5029 structure, in a back end specific way. For instance, the 386
5030 and 960 use the @code{r_type} to directly produce an index
5031 into a howto table vector; the 88k subtracts a number from the
5032 @code{r_type} field and creates an addend field.
5036 #ifndef CALC_ADDEND
5037 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
5039 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
5040 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
5041 coffsym = (obj_symbols (abfd) \
5042 + (cache_ptr->sym_ptr_ptr - symbols)); \
5043 else if (ptr) \
5044 coffsym = coff_symbol_from (abfd, ptr); \
5045 if (coffsym != (coff_symbol_type *) NULL \
5046 && coffsym->native->u.syment.n_scnum == 0) \
5047 cache_ptr->addend = 0; \
5048 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
5049 && ptr->section != (asection *) NULL) \
5050 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
5051 else \
5052 cache_ptr->addend = 0; \
5054 #endif
5056 static bfd_boolean
5057 coff_slurp_reloc_table (abfd, asect, symbols)
5058 bfd * abfd;
5059 sec_ptr asect;
5060 asymbol ** symbols;
5062 RELOC *native_relocs;
5063 arelent *reloc_cache;
5064 arelent *cache_ptr;
5065 unsigned int idx;
5066 bfd_size_type amt;
5068 if (asect->relocation)
5069 return TRUE;
5070 if (asect->reloc_count == 0)
5071 return TRUE;
5072 if (asect->flags & SEC_CONSTRUCTOR)
5073 return TRUE;
5074 if (!coff_slurp_symbol_table (abfd))
5075 return FALSE;
5076 amt = (bfd_size_type) bfd_coff_relsz (abfd) * asect->reloc_count;
5077 native_relocs = (RELOC *) buy_and_read (abfd, asect->rel_filepos, amt);
5078 amt = (bfd_size_type) asect->reloc_count * sizeof (arelent);
5079 reloc_cache = (arelent *) bfd_alloc (abfd, amt);
5081 if (reloc_cache == NULL)
5082 return FALSE;
5084 for (idx = 0; idx < asect->reloc_count; idx++)
5086 struct internal_reloc dst;
5087 struct external_reloc *src;
5088 #ifndef RELOC_PROCESSING
5089 asymbol *ptr;
5090 #endif
5092 cache_ptr = reloc_cache + idx;
5093 src = native_relocs + idx;
5095 coff_swap_reloc_in (abfd, src, &dst);
5097 #ifdef RELOC_PROCESSING
5098 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
5099 #else
5100 cache_ptr->address = dst.r_vaddr;
5102 if (dst.r_symndx != -1)
5104 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
5106 (*_bfd_error_handler)
5107 (_("%B: warning: illegal symbol index %ld in relocs"),
5108 abfd, dst.r_symndx);
5109 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5110 ptr = NULL;
5112 else
5114 cache_ptr->sym_ptr_ptr = (symbols
5115 + obj_convert (abfd)[dst.r_symndx]);
5116 ptr = *(cache_ptr->sym_ptr_ptr);
5119 else
5121 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5122 ptr = NULL;
5125 /* The symbols definitions that we have read in have been
5126 relocated as if their sections started at 0. But the offsets
5127 refering to the symbols in the raw data have not been
5128 modified, so we have to have a negative addend to compensate.
5130 Note that symbols which used to be common must be left alone. */
5132 /* Calculate any reloc addend by looking at the symbol. */
5133 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
5135 cache_ptr->address -= asect->vma;
5136 /* !! cache_ptr->section = (asection *) NULL;*/
5138 /* Fill in the cache_ptr->howto field from dst.r_type. */
5139 RTYPE2HOWTO (cache_ptr, &dst);
5140 #endif /* RELOC_PROCESSING */
5142 if (cache_ptr->howto == NULL)
5144 (*_bfd_error_handler)
5145 (_("%B: illegal relocation type %d at address 0x%lx"),
5146 abfd, dst.r_type, (long) dst.r_vaddr);
5147 bfd_set_error (bfd_error_bad_value);
5148 return FALSE;
5152 asect->relocation = reloc_cache;
5153 return TRUE;
5156 #ifndef coff_rtype_to_howto
5157 #ifdef RTYPE2HOWTO
5159 /* Get the howto structure for a reloc. This is only used if the file
5160 including this one defines coff_relocate_section to be
5161 _bfd_coff_generic_relocate_section, so it is OK if it does not
5162 always work. It is the responsibility of the including file to
5163 make sure it is reasonable if it is needed. */
5165 static reloc_howto_type *coff_rtype_to_howto
5166 PARAMS ((bfd *, asection *, struct internal_reloc *,
5167 struct coff_link_hash_entry *, struct internal_syment *,
5168 bfd_vma *));
5170 static reloc_howto_type *
5171 coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
5172 bfd *abfd ATTRIBUTE_UNUSED;
5173 asection *sec ATTRIBUTE_UNUSED;
5174 struct internal_reloc *rel;
5175 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED;
5176 struct internal_syment *sym ATTRIBUTE_UNUSED;
5177 bfd_vma *addendp ATTRIBUTE_UNUSED;
5179 arelent genrel;
5181 RTYPE2HOWTO (&genrel, rel);
5182 return genrel.howto;
5185 #else /* ! defined (RTYPE2HOWTO) */
5187 #define coff_rtype_to_howto NULL
5189 #endif /* ! defined (RTYPE2HOWTO) */
5190 #endif /* ! defined (coff_rtype_to_howto) */
5192 /* This is stupid. This function should be a boolean predicate. */
5193 static long
5194 coff_canonicalize_reloc (abfd, section, relptr, symbols)
5195 bfd * abfd;
5196 sec_ptr section;
5197 arelent ** relptr;
5198 asymbol ** symbols;
5200 arelent *tblptr = section->relocation;
5201 unsigned int count = 0;
5203 if (section->flags & SEC_CONSTRUCTOR)
5205 /* This section has relocs made up by us, they are not in the
5206 file, so take them out of their chain and place them into
5207 the data area provided. */
5208 arelent_chain *chain = section->constructor_chain;
5210 for (count = 0; count < section->reloc_count; count++)
5212 *relptr++ = &chain->relent;
5213 chain = chain->next;
5216 else
5218 if (! coff_slurp_reloc_table (abfd, section, symbols))
5219 return -1;
5221 tblptr = section->relocation;
5223 for (; count++ < section->reloc_count;)
5224 *relptr++ = tblptr++;
5226 *relptr = 0;
5227 return section->reloc_count;
5230 #ifdef GNU960
5231 file_ptr
5232 coff_sym_filepos (abfd)
5233 bfd *abfd;
5235 return obj_sym_filepos (abfd);
5237 #endif
5239 #ifndef coff_reloc16_estimate
5240 #define coff_reloc16_estimate dummy_reloc16_estimate
5242 static int dummy_reloc16_estimate
5243 PARAMS ((bfd *, asection *, arelent *, unsigned int,
5244 struct bfd_link_info *));
5246 static int
5247 dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
5248 bfd *abfd ATTRIBUTE_UNUSED;
5249 asection *input_section ATTRIBUTE_UNUSED;
5250 arelent *reloc ATTRIBUTE_UNUSED;
5251 unsigned int shrink ATTRIBUTE_UNUSED;
5252 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
5254 abort ();
5255 return 0;
5258 #endif
5260 #ifndef coff_reloc16_extra_cases
5262 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
5264 /* This works even if abort is not declared in any header file. */
5266 static void dummy_reloc16_extra_cases
5267 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
5268 bfd_byte *, unsigned int *, unsigned int *));
5270 static void
5271 dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
5272 dst_ptr)
5273 bfd *abfd ATTRIBUTE_UNUSED;
5274 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
5275 struct bfd_link_order *link_order ATTRIBUTE_UNUSED;
5276 arelent *reloc ATTRIBUTE_UNUSED;
5277 bfd_byte *data ATTRIBUTE_UNUSED;
5278 unsigned int *src_ptr ATTRIBUTE_UNUSED;
5279 unsigned int *dst_ptr ATTRIBUTE_UNUSED;
5281 abort ();
5283 #endif
5285 #ifndef coff_bfd_link_hash_table_free
5286 #define coff_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
5287 #endif
5289 /* If coff_relocate_section is defined, we can use the optimized COFF
5290 backend linker. Otherwise we must continue to use the old linker. */
5291 #ifdef coff_relocate_section
5292 #ifndef coff_bfd_link_hash_table_create
5293 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
5294 #endif
5295 #ifndef coff_bfd_link_add_symbols
5296 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
5297 #endif
5298 #ifndef coff_bfd_final_link
5299 #define coff_bfd_final_link _bfd_coff_final_link
5300 #endif
5301 #else /* ! defined (coff_relocate_section) */
5302 #define coff_relocate_section NULL
5303 #ifndef coff_bfd_link_hash_table_create
5304 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
5305 #endif
5306 #ifndef coff_bfd_link_add_symbols
5307 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
5308 #endif
5309 #define coff_bfd_final_link _bfd_generic_final_link
5310 #endif /* ! defined (coff_relocate_section) */
5312 #define coff_bfd_link_just_syms _bfd_generic_link_just_syms
5313 #define coff_bfd_link_split_section _bfd_generic_link_split_section
5315 #ifndef coff_start_final_link
5316 #define coff_start_final_link NULL
5317 #endif
5319 #ifndef coff_adjust_symndx
5320 #define coff_adjust_symndx NULL
5321 #endif
5323 #ifndef coff_link_add_one_symbol
5324 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5325 #endif
5327 #ifndef coff_link_output_has_begun
5329 static bfd_boolean coff_link_output_has_begun
5330 PARAMS ((bfd *, struct coff_final_link_info *));
5332 static bfd_boolean
5333 coff_link_output_has_begun (abfd, info)
5334 bfd * abfd;
5335 struct coff_final_link_info * info ATTRIBUTE_UNUSED;
5337 return abfd->output_has_begun;
5339 #endif
5341 #ifndef coff_final_link_postscript
5343 static bfd_boolean coff_final_link_postscript
5344 PARAMS ((bfd *, struct coff_final_link_info *));
5346 static bfd_boolean
5347 coff_final_link_postscript (abfd, pfinfo)
5348 bfd * abfd ATTRIBUTE_UNUSED;
5349 struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED;
5351 return TRUE;
5353 #endif
5355 #ifndef coff_SWAP_aux_in
5356 #define coff_SWAP_aux_in coff_swap_aux_in
5357 #endif
5358 #ifndef coff_SWAP_sym_in
5359 #define coff_SWAP_sym_in coff_swap_sym_in
5360 #endif
5361 #ifndef coff_SWAP_lineno_in
5362 #define coff_SWAP_lineno_in coff_swap_lineno_in
5363 #endif
5364 #ifndef coff_SWAP_aux_out
5365 #define coff_SWAP_aux_out coff_swap_aux_out
5366 #endif
5367 #ifndef coff_SWAP_sym_out
5368 #define coff_SWAP_sym_out coff_swap_sym_out
5369 #endif
5370 #ifndef coff_SWAP_lineno_out
5371 #define coff_SWAP_lineno_out coff_swap_lineno_out
5372 #endif
5373 #ifndef coff_SWAP_reloc_out
5374 #define coff_SWAP_reloc_out coff_swap_reloc_out
5375 #endif
5376 #ifndef coff_SWAP_filehdr_out
5377 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5378 #endif
5379 #ifndef coff_SWAP_aouthdr_out
5380 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5381 #endif
5382 #ifndef coff_SWAP_scnhdr_out
5383 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5384 #endif
5385 #ifndef coff_SWAP_reloc_in
5386 #define coff_SWAP_reloc_in coff_swap_reloc_in
5387 #endif
5388 #ifndef coff_SWAP_filehdr_in
5389 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5390 #endif
5391 #ifndef coff_SWAP_aouthdr_in
5392 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5393 #endif
5394 #ifndef coff_SWAP_scnhdr_in
5395 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5396 #endif
5398 static const bfd_coff_backend_data bfd_coff_std_swap_table =
5400 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5401 coff_SWAP_aux_out, coff_SWAP_sym_out,
5402 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5403 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5404 coff_SWAP_scnhdr_out,
5405 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5406 #ifdef COFF_LONG_FILENAMES
5407 TRUE,
5408 #else
5409 FALSE,
5410 #endif
5411 #ifdef COFF_LONG_SECTION_NAMES
5412 TRUE,
5413 #else
5414 FALSE,
5415 #endif
5416 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5417 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5418 TRUE,
5419 #else
5420 FALSE,
5421 #endif
5422 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5424 #else
5426 #endif
5427 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5428 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5429 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5430 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5431 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5432 coff_classify_symbol, coff_compute_section_file_positions,
5433 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5434 coff_adjust_symndx, coff_link_add_one_symbol,
5435 coff_link_output_has_begun, coff_final_link_postscript
5438 #ifdef TICOFF
5439 /* COFF0 differs in file/section header size and relocation entry size. */
5440 static const bfd_coff_backend_data ticoff0_swap_table =
5442 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5443 coff_SWAP_aux_out, coff_SWAP_sym_out,
5444 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5445 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5446 coff_SWAP_scnhdr_out,
5447 FILHSZ_V0, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ_V0, LINESZ, FILNMLEN,
5448 #ifdef COFF_LONG_FILENAMES
5449 TRUE,
5450 #else
5451 FALSE,
5452 #endif
5453 #ifdef COFF_LONG_SECTION_NAMES
5454 TRUE,
5455 #else
5456 FALSE,
5457 #endif
5458 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5459 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5460 TRUE,
5461 #else
5462 FALSE,
5463 #endif
5464 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5466 #else
5468 #endif
5469 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5470 coff_SWAP_reloc_in, ticoff0_bad_format_hook, coff_set_arch_mach_hook,
5471 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5472 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5473 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5474 coff_classify_symbol, coff_compute_section_file_positions,
5475 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5476 coff_adjust_symndx, coff_link_add_one_symbol,
5477 coff_link_output_has_begun, coff_final_link_postscript
5479 #endif
5481 #ifdef TICOFF
5482 /* COFF1 differs in section header size. */
5483 static const bfd_coff_backend_data ticoff1_swap_table =
5485 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5486 coff_SWAP_aux_out, coff_SWAP_sym_out,
5487 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5488 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5489 coff_SWAP_scnhdr_out,
5490 FILHSZ, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5491 #ifdef COFF_LONG_FILENAMES
5492 TRUE,
5493 #else
5494 FALSE,
5495 #endif
5496 #ifdef COFF_LONG_SECTION_NAMES
5497 TRUE,
5498 #else
5499 FALSE,
5500 #endif
5501 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5502 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5503 TRUE,
5504 #else
5505 FALSE,
5506 #endif
5507 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5509 #else
5511 #endif
5512 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5513 coff_SWAP_reloc_in, ticoff1_bad_format_hook, coff_set_arch_mach_hook,
5514 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5515 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5516 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5517 coff_classify_symbol, coff_compute_section_file_positions,
5518 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5519 coff_adjust_symndx, coff_link_add_one_symbol,
5520 coff_link_output_has_begun, coff_final_link_postscript
5522 #endif
5524 #ifndef coff_close_and_cleanup
5525 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5526 #endif
5528 #ifndef coff_bfd_free_cached_info
5529 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5530 #endif
5532 #ifndef coff_get_section_contents
5533 #define coff_get_section_contents _bfd_generic_get_section_contents
5534 #endif
5536 #ifndef coff_bfd_copy_private_symbol_data
5537 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5538 #endif
5540 #ifndef coff_bfd_copy_private_header_data
5541 #define coff_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
5542 #endif
5544 #ifndef coff_bfd_copy_private_section_data
5545 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5546 #endif
5548 #ifndef coff_bfd_copy_private_bfd_data
5549 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5550 #endif
5552 #ifndef coff_bfd_merge_private_bfd_data
5553 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5554 #endif
5556 #ifndef coff_bfd_set_private_flags
5557 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5558 #endif
5560 #ifndef coff_bfd_print_private_bfd_data
5561 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5562 #endif
5564 #ifndef coff_bfd_is_local_label_name
5565 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5566 #endif
5568 #ifndef coff_bfd_is_target_special_symbol
5569 #define coff_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
5570 #endif
5572 #ifndef coff_read_minisymbols
5573 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5574 #endif
5576 #ifndef coff_minisymbol_to_symbol
5577 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5578 #endif
5580 /* The reloc lookup routine must be supplied by each individual COFF
5581 backend. */
5582 #ifndef coff_bfd_reloc_type_lookup
5583 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5584 #endif
5586 #ifndef coff_bfd_get_relocated_section_contents
5587 #define coff_bfd_get_relocated_section_contents \
5588 bfd_generic_get_relocated_section_contents
5589 #endif
5591 #ifndef coff_bfd_relax_section
5592 #define coff_bfd_relax_section bfd_generic_relax_section
5593 #endif
5595 #ifndef coff_bfd_gc_sections
5596 #define coff_bfd_gc_sections bfd_generic_gc_sections
5597 #endif
5599 #ifndef coff_bfd_merge_sections
5600 #define coff_bfd_merge_sections bfd_generic_merge_sections
5601 #endif
5603 #ifndef coff_bfd_is_group_section
5604 #define coff_bfd_is_group_section bfd_generic_is_group_section
5605 #endif
5607 #ifndef coff_bfd_discard_group
5608 #define coff_bfd_discard_group bfd_generic_discard_group
5609 #endif
5611 #ifndef coff_section_already_linked
5612 #define coff_section_already_linked \
5613 _bfd_generic_section_already_linked
5614 #endif
5616 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5617 const bfd_target VAR = \
5619 NAME , \
5620 bfd_target_coff_flavour, \
5621 BFD_ENDIAN_BIG, /* data byte order is big */ \
5622 BFD_ENDIAN_BIG, /* header byte order is big */ \
5623 /* object flags */ \
5624 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5625 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5626 /* section flags */ \
5627 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5628 UNDER, /* leading symbol underscore */ \
5629 '/', /* ar_pad_char */ \
5630 15, /* ar_max_namelen */ \
5632 /* Data conversion functions. */ \
5633 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5634 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5635 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5637 /* Header conversion functions. */ \
5638 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5639 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5640 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5642 /* bfd_check_format */ \
5643 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5644 _bfd_dummy_target }, \
5645 /* bfd_set_format */ \
5646 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5647 /* bfd_write_contents */ \
5648 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5649 bfd_false }, \
5651 BFD_JUMP_TABLE_GENERIC (coff), \
5652 BFD_JUMP_TABLE_COPY (coff), \
5653 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5654 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5655 BFD_JUMP_TABLE_SYMBOLS (coff), \
5656 BFD_JUMP_TABLE_RELOCS (coff), \
5657 BFD_JUMP_TABLE_WRITE (coff), \
5658 BFD_JUMP_TABLE_LINK (coff), \
5659 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5661 ALTERNATIVE, \
5663 SWAP_TABLE \
5666 #define CREATE_BIGHDR_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5667 const bfd_target VAR = \
5669 NAME , \
5670 bfd_target_coff_flavour, \
5671 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5672 BFD_ENDIAN_BIG, /* header byte order is big */ \
5673 /* object flags */ \
5674 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5675 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5676 /* section flags */ \
5677 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5678 UNDER, /* leading symbol underscore */ \
5679 '/', /* ar_pad_char */ \
5680 15, /* ar_max_namelen */ \
5682 /* Data conversion functions. */ \
5683 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5684 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5685 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5687 /* Header conversion functions. */ \
5688 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5689 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5690 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5692 /* bfd_check_format */ \
5693 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5694 _bfd_dummy_target }, \
5695 /* bfd_set_format */ \
5696 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5697 /* bfd_write_contents */ \
5698 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5699 bfd_false }, \
5701 BFD_JUMP_TABLE_GENERIC (coff), \
5702 BFD_JUMP_TABLE_COPY (coff), \
5703 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5704 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5705 BFD_JUMP_TABLE_SYMBOLS (coff), \
5706 BFD_JUMP_TABLE_RELOCS (coff), \
5707 BFD_JUMP_TABLE_WRITE (coff), \
5708 BFD_JUMP_TABLE_LINK (coff), \
5709 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5711 ALTERNATIVE, \
5713 SWAP_TABLE \
5716 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5717 const bfd_target VAR = \
5719 NAME , \
5720 bfd_target_coff_flavour, \
5721 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5722 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5723 /* object flags */ \
5724 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5725 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5726 /* section flags */ \
5727 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5728 UNDER, /* leading symbol underscore */ \
5729 '/', /* ar_pad_char */ \
5730 15, /* ar_max_namelen */ \
5732 /* Data conversion functions. */ \
5733 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5734 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5735 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5736 /* Header conversion functions. */ \
5737 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5738 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5739 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5740 /* bfd_check_format */ \
5741 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5742 _bfd_dummy_target }, \
5743 /* bfd_set_format */ \
5744 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5745 /* bfd_write_contents */ \
5746 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5747 bfd_false }, \
5749 BFD_JUMP_TABLE_GENERIC (coff), \
5750 BFD_JUMP_TABLE_COPY (coff), \
5751 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5752 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5753 BFD_JUMP_TABLE_SYMBOLS (coff), \
5754 BFD_JUMP_TABLE_RELOCS (coff), \
5755 BFD_JUMP_TABLE_WRITE (coff), \
5756 BFD_JUMP_TABLE_LINK (coff), \
5757 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5759 ALTERNATIVE, \
5761 SWAP_TABLE \