* gmon.h, alpha.c, vax.c: Remove #if 0'd chunks.
[binutils.git] / bfd / coffcode.h
blob30560aa8148e970b6d70660c57bc1a39149ec072
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 switch (internal_f->f_flags & F_MACHMASK)
1994 case F_MAXQ10:
1995 machine = bfd_mach_maxq10;
1996 break;
1997 case F_MAXQ20:
1998 machine = bfd_mach_maxq20;
1999 break;
2000 default:
2001 return FALSE;
2003 break;
2004 #endif
2005 #ifdef MC88MAGIC
2006 case MC88MAGIC:
2007 case MC88DMAGIC:
2008 case MC88OMAGIC:
2009 arch = bfd_arch_m88k;
2010 machine = 88100;
2011 break;
2012 #endif
2013 #ifdef Z8KMAGIC
2014 case Z8KMAGIC:
2015 arch = bfd_arch_z8k;
2016 switch (internal_f->f_flags & F_MACHMASK)
2018 case F_Z8001:
2019 machine = bfd_mach_z8001;
2020 break;
2021 case F_Z8002:
2022 machine = bfd_mach_z8002;
2023 break;
2024 default:
2025 return FALSE;
2027 break;
2028 #endif
2029 #ifdef I860
2030 case I860MAGIC:
2031 arch = bfd_arch_i860;
2032 break;
2033 #endif
2034 #ifdef I960
2035 #ifdef I960ROMAGIC
2036 case I960ROMAGIC:
2037 case I960RWMAGIC:
2038 arch = bfd_arch_i960;
2039 switch (F_I960TYPE & internal_f->f_flags)
2041 default:
2042 case F_I960CORE:
2043 machine = bfd_mach_i960_core;
2044 break;
2045 case F_I960KB:
2046 machine = bfd_mach_i960_kb_sb;
2047 break;
2048 case F_I960MC:
2049 machine = bfd_mach_i960_mc;
2050 break;
2051 case F_I960XA:
2052 machine = bfd_mach_i960_xa;
2053 break;
2054 case F_I960CA:
2055 machine = bfd_mach_i960_ca;
2056 break;
2057 case F_I960KA:
2058 machine = bfd_mach_i960_ka_sa;
2059 break;
2060 case F_I960JX:
2061 machine = bfd_mach_i960_jx;
2062 break;
2063 case F_I960HX:
2064 machine = bfd_mach_i960_hx;
2065 break;
2067 break;
2068 #endif
2069 #endif
2071 #ifdef RS6000COFF_C
2072 #ifdef XCOFF64
2073 case U64_TOCMAGIC:
2074 case U803XTOCMAGIC:
2075 #else
2076 case U802ROMAGIC:
2077 case U802WRMAGIC:
2078 case U802TOCMAGIC:
2079 #endif
2081 int cputype;
2083 if (xcoff_data (abfd)->cputype != -1)
2084 cputype = xcoff_data (abfd)->cputype & 0xff;
2085 else
2087 /* We did not get a value from the a.out header. If the
2088 file has not been stripped, we may be able to get the
2089 architecture information from the first symbol, if it
2090 is a .file symbol. */
2091 if (obj_raw_syment_count (abfd) == 0)
2092 cputype = 0;
2093 else
2095 bfd_byte *buf;
2096 struct internal_syment sym;
2097 bfd_size_type amt = bfd_coff_symesz (abfd);
2099 buf = (bfd_byte *) bfd_malloc (amt);
2100 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
2101 || bfd_bread (buf, amt, abfd) != amt)
2103 free (buf);
2104 return FALSE;
2106 bfd_coff_swap_sym_in (abfd, (PTR) buf, (PTR) &sym);
2107 if (sym.n_sclass == C_FILE)
2108 cputype = sym.n_type & 0xff;
2109 else
2110 cputype = 0;
2111 free (buf);
2115 /* FIXME: We don't handle all cases here. */
2116 switch (cputype)
2118 default:
2119 case 0:
2120 arch = bfd_xcoff_architecture (abfd);
2121 machine = bfd_xcoff_machine (abfd);
2122 break;
2124 case 1:
2125 arch = bfd_arch_powerpc;
2126 machine = bfd_mach_ppc_601;
2127 break;
2128 case 2: /* 64 bit PowerPC */
2129 arch = bfd_arch_powerpc;
2130 machine = bfd_mach_ppc_620;
2131 break;
2132 case 3:
2133 arch = bfd_arch_powerpc;
2134 machine = bfd_mach_ppc;
2135 break;
2136 case 4:
2137 arch = bfd_arch_rs6000;
2138 machine = bfd_mach_rs6k;
2139 break;
2142 break;
2143 #endif
2145 #ifdef WE32KMAGIC
2146 case WE32KMAGIC:
2147 arch = bfd_arch_we32k;
2148 break;
2149 #endif
2151 #ifdef H8300MAGIC
2152 case H8300MAGIC:
2153 arch = bfd_arch_h8300;
2154 machine = bfd_mach_h8300;
2155 /* !! FIXME this probably isn't the right place for this. */
2156 abfd->flags |= BFD_IS_RELAXABLE;
2157 break;
2158 #endif
2160 #ifdef H8300HMAGIC
2161 case H8300HMAGIC:
2162 arch = bfd_arch_h8300;
2163 machine = bfd_mach_h8300h;
2164 /* !! FIXME this probably isn't the right place for this. */
2165 abfd->flags |= BFD_IS_RELAXABLE;
2166 break;
2167 #endif
2169 #ifdef H8300SMAGIC
2170 case H8300SMAGIC:
2171 arch = bfd_arch_h8300;
2172 machine = bfd_mach_h8300s;
2173 /* !! FIXME this probably isn't the right place for this. */
2174 abfd->flags |= BFD_IS_RELAXABLE;
2175 break;
2176 #endif
2178 #ifdef H8300HNMAGIC
2179 case H8300HNMAGIC:
2180 arch = bfd_arch_h8300;
2181 machine = bfd_mach_h8300hn;
2182 /* !! FIXME this probably isn't the right place for this. */
2183 abfd->flags |= BFD_IS_RELAXABLE;
2184 break;
2185 #endif
2187 #ifdef H8300SNMAGIC
2188 case H8300SNMAGIC:
2189 arch = bfd_arch_h8300;
2190 machine = bfd_mach_h8300sn;
2191 /* !! FIXME this probably isn't the right place for this. */
2192 abfd->flags |= BFD_IS_RELAXABLE;
2193 break;
2194 #endif
2196 #ifdef SH_ARCH_MAGIC_BIG
2197 case SH_ARCH_MAGIC_BIG:
2198 case SH_ARCH_MAGIC_LITTLE:
2199 #ifdef COFF_WITH_PE
2200 case SH_ARCH_MAGIC_WINCE:
2201 #endif
2202 arch = bfd_arch_sh;
2203 break;
2204 #endif
2206 #ifdef MIPS_ARCH_MAGIC_WINCE
2207 case MIPS_ARCH_MAGIC_WINCE:
2208 arch = bfd_arch_mips;
2209 break;
2210 #endif
2212 #ifdef H8500MAGIC
2213 case H8500MAGIC:
2214 arch = bfd_arch_h8500;
2215 break;
2216 #endif
2218 #ifdef SPARCMAGIC
2219 case SPARCMAGIC:
2220 #ifdef LYNXCOFFMAGIC
2221 case LYNXCOFFMAGIC:
2222 #endif
2223 arch = bfd_arch_sparc;
2224 break;
2225 #endif
2227 #ifdef TIC30MAGIC
2228 case TIC30MAGIC:
2229 arch = bfd_arch_tic30;
2230 break;
2231 #endif
2233 #ifdef TICOFF0MAGIC
2234 #ifdef TICOFF_TARGET_ARCH
2235 /* This TI COFF section should be used by all new TI COFF v0 targets. */
2236 case TICOFF0MAGIC:
2237 arch = TICOFF_TARGET_ARCH;
2238 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2239 break;
2240 #endif
2241 #endif
2243 #ifdef TICOFF1MAGIC
2244 /* This TI COFF section should be used by all new TI COFF v1/2 targets. */
2245 /* TI COFF1 and COFF2 use the target_id field to specify which arch. */
2246 case TICOFF1MAGIC:
2247 case TICOFF2MAGIC:
2248 switch (internal_f->f_target_id)
2250 #ifdef TI_TARGET_ID
2251 case TI_TARGET_ID:
2252 arch = TICOFF_TARGET_ARCH;
2253 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2254 break;
2255 #endif
2256 default:
2257 arch = bfd_arch_obscure;
2258 (*_bfd_error_handler)
2259 (_("Unrecognized TI COFF target id '0x%x'"),
2260 internal_f->f_target_id);
2261 break;
2263 break;
2264 #endif
2266 #ifdef TIC80_ARCH_MAGIC
2267 case TIC80_ARCH_MAGIC:
2268 arch = bfd_arch_tic80;
2269 break;
2270 #endif
2272 #ifdef MCOREMAGIC
2273 case MCOREMAGIC:
2274 arch = bfd_arch_mcore;
2275 break;
2276 #endif
2278 #ifdef W65MAGIC
2279 case W65MAGIC:
2280 arch = bfd_arch_w65;
2281 break;
2282 #endif
2284 default: /* Unreadable input file type. */
2285 arch = bfd_arch_obscure;
2286 break;
2289 bfd_default_set_arch_mach (abfd, arch, machine);
2290 return TRUE;
2293 #ifdef SYMNAME_IN_DEBUG
2295 static bfd_boolean symname_in_debug_hook
2296 PARAMS ((bfd *, struct internal_syment *));
2298 static bfd_boolean
2299 symname_in_debug_hook (abfd, sym)
2300 bfd * abfd ATTRIBUTE_UNUSED;
2301 struct internal_syment *sym;
2303 return SYMNAME_IN_DEBUG (sym) != 0;
2306 #else
2308 #define symname_in_debug_hook \
2309 (bfd_boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2311 #endif
2313 #ifdef RS6000COFF_C
2315 #ifdef XCOFF64
2316 #define FORCE_SYMNAMES_IN_STRINGS
2317 #endif
2319 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2321 static bfd_boolean coff_pointerize_aux_hook
2322 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2323 unsigned int, combined_entry_type *));
2325 static bfd_boolean
2326 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2327 bfd *abfd ATTRIBUTE_UNUSED;
2328 combined_entry_type *table_base;
2329 combined_entry_type *symbol;
2330 unsigned int indaux;
2331 combined_entry_type *aux;
2333 int class = symbol->u.syment.n_sclass;
2335 if ((class == C_EXT || class == C_HIDEXT)
2336 && indaux + 1 == symbol->u.syment.n_numaux)
2338 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2340 aux->u.auxent.x_csect.x_scnlen.p =
2341 table_base + aux->u.auxent.x_csect.x_scnlen.l;
2342 aux->fix_scnlen = 1;
2345 /* Return TRUE to indicate that the caller should not do any
2346 further work on this auxent. */
2347 return TRUE;
2350 /* Return FALSE to indicate that this auxent should be handled by
2351 the caller. */
2352 return FALSE;
2355 #else
2356 #ifdef I960
2358 /* We don't want to pointerize bal entries. */
2360 static bfd_boolean coff_pointerize_aux_hook
2361 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2362 unsigned int, combined_entry_type *));
2364 static bfd_boolean
2365 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2366 bfd *abfd ATTRIBUTE_UNUSED;
2367 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2368 combined_entry_type *symbol;
2369 unsigned int indaux;
2370 combined_entry_type *aux ATTRIBUTE_UNUSED;
2372 /* Return TRUE if we don't want to pointerize this aux entry, which
2373 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2374 return (indaux == 1
2375 && (symbol->u.syment.n_sclass == C_LEAFPROC
2376 || symbol->u.syment.n_sclass == C_LEAFSTAT
2377 || symbol->u.syment.n_sclass == C_LEAFEXT));
2380 #else /* ! I960 */
2382 #define coff_pointerize_aux_hook 0
2384 #endif /* ! I960 */
2385 #endif /* ! RS6000COFF_C */
2387 /* Print an aux entry. This returns TRUE if it has printed it. */
2389 static bfd_boolean coff_print_aux
2390 PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
2391 combined_entry_type *, unsigned int));
2393 static bfd_boolean
2394 coff_print_aux (abfd, file, table_base, symbol, aux, indaux)
2395 bfd *abfd ATTRIBUTE_UNUSED;
2396 FILE *file ATTRIBUTE_UNUSED;
2397 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2398 combined_entry_type *symbol ATTRIBUTE_UNUSED;
2399 combined_entry_type *aux ATTRIBUTE_UNUSED;
2400 unsigned int indaux ATTRIBUTE_UNUSED;
2402 #ifdef RS6000COFF_C
2403 if ((symbol->u.syment.n_sclass == C_EXT
2404 || symbol->u.syment.n_sclass == C_HIDEXT)
2405 && indaux + 1 == symbol->u.syment.n_numaux)
2407 /* This is a csect entry. */
2408 fprintf (file, "AUX ");
2409 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
2411 BFD_ASSERT (! aux->fix_scnlen);
2412 #ifdef XCOFF64
2413 fprintf (file, "val %5lld", aux->u.auxent.x_csect.x_scnlen.l);
2414 #else
2415 fprintf (file, "val %5ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2416 #endif
2418 else
2420 fprintf (file, "indx ");
2421 if (! aux->fix_scnlen)
2422 #ifdef XCOFF64
2423 fprintf (file, "%4lld", aux->u.auxent.x_csect.x_scnlen.l);
2424 #else
2425 fprintf (file, "%4ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2426 #endif
2427 else
2428 fprintf (file, "%4ld",
2429 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
2431 fprintf (file,
2432 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2433 aux->u.auxent.x_csect.x_parmhash,
2434 (unsigned int) aux->u.auxent.x_csect.x_snhash,
2435 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
2436 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
2437 (unsigned int) aux->u.auxent.x_csect.x_smclas,
2438 aux->u.auxent.x_csect.x_stab,
2439 (unsigned int) aux->u.auxent.x_csect.x_snstab);
2440 return TRUE;
2442 #endif
2444 /* Return FALSE to indicate that no special action was taken. */
2445 return FALSE;
2449 SUBSUBSECTION
2450 Writing relocations
2452 To write relocations, the back end steps though the
2453 canonical relocation table and create an
2454 @code{internal_reloc}. The symbol index to use is removed from
2455 the @code{offset} field in the symbol table supplied. The
2456 address comes directly from the sum of the section base
2457 address and the relocation offset; the type is dug directly
2458 from the howto field. Then the @code{internal_reloc} is
2459 swapped into the shape of an @code{external_reloc} and written
2460 out to disk.
2464 #ifdef TARG_AUX
2466 static int compare_arelent_ptr PARAMS ((const PTR, const PTR));
2468 /* AUX's ld wants relocations to be sorted. */
2469 static int
2470 compare_arelent_ptr (x, y)
2471 const PTR x;
2472 const PTR y;
2474 const arelent **a = (const arelent **) x;
2475 const arelent **b = (const arelent **) y;
2476 bfd_size_type aadr = (*a)->address;
2477 bfd_size_type badr = (*b)->address;
2479 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
2482 #endif /* TARG_AUX */
2484 static bfd_boolean
2485 coff_write_relocs (abfd, first_undef)
2486 bfd * abfd;
2487 int first_undef;
2489 asection *s;
2491 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
2493 unsigned int i;
2494 struct external_reloc dst;
2495 arelent **p;
2497 #ifndef TARG_AUX
2498 p = s->orelocation;
2499 #else
2501 /* Sort relocations before we write them out. */
2502 bfd_size_type amt;
2504 amt = s->reloc_count;
2505 amt *= sizeof (arelent *);
2506 p = (arelent **) bfd_malloc (amt);
2507 if (p == NULL && s->reloc_count > 0)
2508 return FALSE;
2509 memcpy (p, s->orelocation, (size_t) amt);
2510 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
2512 #endif
2514 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
2515 return FALSE;
2517 #ifdef COFF_WITH_PE
2518 if (obj_pe (abfd) && s->reloc_count >= 0xffff)
2520 /* Encode real count here as first reloc. */
2521 struct internal_reloc n;
2523 memset ((PTR) & n, 0, sizeof (n));
2524 /* Add one to count *this* reloc (grr). */
2525 n.r_vaddr = s->reloc_count + 1;
2526 coff_swap_reloc_out (abfd, &n, &dst);
2527 if (bfd_bwrite ((PTR) & dst, (bfd_size_type) bfd_coff_relsz (abfd),
2528 abfd) != bfd_coff_relsz (abfd))
2529 return FALSE;
2531 #endif
2533 for (i = 0; i < s->reloc_count; i++)
2535 struct internal_reloc n;
2536 arelent *q = p[i];
2538 memset ((PTR) & n, 0, sizeof (n));
2540 /* Now we've renumbered the symbols we know where the
2541 undefined symbols live in the table. Check the reloc
2542 entries for symbols who's output bfd isn't the right one.
2543 This is because the symbol was undefined (which means
2544 that all the pointers are never made to point to the same
2545 place). This is a bad thing,'cause the symbols attached
2546 to the output bfd are indexed, so that the relocation
2547 entries know which symbol index they point to. So we
2548 have to look up the output symbol here. */
2550 if (q->sym_ptr_ptr[0]->the_bfd != abfd)
2552 int j;
2553 const char *sname = q->sym_ptr_ptr[0]->name;
2554 asymbol **outsyms = abfd->outsymbols;
2556 for (j = first_undef; outsyms[j]; j++)
2558 const char *intable = outsyms[j]->name;
2560 if (strcmp (intable, sname) == 0) {
2561 /* Got a hit, so repoint the reloc. */
2562 q->sym_ptr_ptr = outsyms + j;
2563 break;
2568 n.r_vaddr = q->address + s->vma;
2570 #ifdef R_IHCONST
2571 /* The 29k const/consth reloc pair is a real kludge. The consth
2572 part doesn't have a symbol; it has an offset. So rebuilt
2573 that here. */
2574 if (q->howto->type == R_IHCONST)
2575 n.r_symndx = q->addend;
2576 else
2577 #endif
2578 if (q->sym_ptr_ptr)
2580 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2581 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q,s))
2582 #else
2583 if ((*q->sym_ptr_ptr)->section == bfd_abs_section_ptr
2584 && ((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0)
2585 #endif
2586 /* This is a relocation relative to the absolute symbol. */
2587 n.r_symndx = -1;
2588 else
2590 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
2591 /* Take notice if the symbol reloc points to a symbol
2592 we don't have in our symbol table. What should we
2593 do for this?? */
2594 if (n.r_symndx > obj_conv_table_size (abfd))
2595 abort ();
2599 #ifdef SWAP_OUT_RELOC_OFFSET
2600 n.r_offset = q->addend;
2601 #endif
2603 #ifdef SELECT_RELOC
2604 /* Work out reloc type from what is required. */
2605 SELECT_RELOC (n, q->howto);
2606 #else
2607 n.r_type = q->howto->type;
2608 #endif
2609 coff_swap_reloc_out (abfd, &n, &dst);
2611 if (bfd_bwrite ((PTR) & dst, (bfd_size_type) bfd_coff_relsz (abfd),
2612 abfd) != bfd_coff_relsz (abfd))
2613 return FALSE;
2616 #ifdef TARG_AUX
2617 if (p != NULL)
2618 free (p);
2619 #endif
2622 return TRUE;
2625 /* Set flags and magic number of a coff file from architecture and machine
2626 type. Result is TRUE if we can represent the arch&type, FALSE if not. */
2628 static bfd_boolean
2629 coff_set_flags (abfd, magicp, flagsp)
2630 bfd * abfd;
2631 unsigned int *magicp ATTRIBUTE_UNUSED;
2632 unsigned short *flagsp ATTRIBUTE_UNUSED;
2634 switch (bfd_get_arch (abfd))
2636 #ifdef Z8KMAGIC
2637 case bfd_arch_z8k:
2638 *magicp = Z8KMAGIC;
2639 switch (bfd_get_mach (abfd))
2641 case bfd_mach_z8001:
2642 *flagsp = F_Z8001;
2643 break;
2644 case bfd_mach_z8002:
2645 *flagsp = F_Z8002;
2646 break;
2647 default:
2648 return FALSE;
2650 return TRUE;
2651 #endif
2652 #ifdef I960ROMAGIC
2654 case bfd_arch_i960:
2657 unsigned flags;
2658 *magicp = I960ROMAGIC;
2660 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2661 I960RWMAGIC); FIXME???
2663 switch (bfd_get_mach (abfd))
2665 case bfd_mach_i960_core:
2666 flags = F_I960CORE;
2667 break;
2668 case bfd_mach_i960_kb_sb:
2669 flags = F_I960KB;
2670 break;
2671 case bfd_mach_i960_mc:
2672 flags = F_I960MC;
2673 break;
2674 case bfd_mach_i960_xa:
2675 flags = F_I960XA;
2676 break;
2677 case bfd_mach_i960_ca:
2678 flags = F_I960CA;
2679 break;
2680 case bfd_mach_i960_ka_sa:
2681 flags = F_I960KA;
2682 break;
2683 case bfd_mach_i960_jx:
2684 flags = F_I960JX;
2685 break;
2686 case bfd_mach_i960_hx:
2687 flags = F_I960HX;
2688 break;
2689 default:
2690 return FALSE;
2692 *flagsp = flags;
2693 return TRUE;
2695 break;
2696 #endif
2698 #ifdef TIC30MAGIC
2699 case bfd_arch_tic30:
2700 *magicp = TIC30MAGIC;
2701 return TRUE;
2702 #endif
2704 #ifdef TICOFF_DEFAULT_MAGIC
2705 case TICOFF_TARGET_ARCH:
2706 /* If there's no indication of which version we want, use the default. */
2707 if (!abfd->xvec )
2708 *magicp = TICOFF_DEFAULT_MAGIC;
2709 else
2711 /* We may want to output in a different COFF version. */
2712 switch (abfd->xvec->name[4])
2714 case '0':
2715 *magicp = TICOFF0MAGIC;
2716 break;
2717 case '1':
2718 *magicp = TICOFF1MAGIC;
2719 break;
2720 case '2':
2721 *magicp = TICOFF2MAGIC;
2722 break;
2723 default:
2724 return FALSE;
2727 TICOFF_TARGET_MACHINE_SET (flagsp, bfd_get_mach (abfd));
2728 return TRUE;
2729 #endif
2731 #ifdef TIC80_ARCH_MAGIC
2732 case bfd_arch_tic80:
2733 *magicp = TIC80_ARCH_MAGIC;
2734 return TRUE;
2735 #endif
2736 #ifdef ARMMAGIC
2737 case bfd_arch_arm:
2738 #ifdef ARM_WINCE
2739 * magicp = ARMPEMAGIC;
2740 #else
2741 * magicp = ARMMAGIC;
2742 #endif
2743 * flagsp = 0;
2744 if (APCS_SET (abfd))
2746 if (APCS_26_FLAG (abfd))
2747 * flagsp |= F_APCS26;
2749 if (APCS_FLOAT_FLAG (abfd))
2750 * flagsp |= F_APCS_FLOAT;
2752 if (PIC_FLAG (abfd))
2753 * flagsp |= F_PIC;
2755 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2756 * flagsp |= F_INTERWORK;
2757 switch (bfd_get_mach (abfd))
2759 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2760 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2761 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2762 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2763 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2764 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2765 case bfd_mach_arm_5: * flagsp |= F_ARM_5; break;
2766 /* FIXME: we do not have F_ARM vaues greater than F_ARM_5.
2767 See also the comment in coff_set_arch_mach_hook(). */
2768 case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break;
2769 case bfd_mach_arm_5TE: * flagsp |= F_ARM_5; break;
2770 case bfd_mach_arm_XScale: * flagsp |= F_ARM_5; break;
2772 return TRUE;
2773 #endif
2774 #ifdef PPCMAGIC
2775 case bfd_arch_powerpc:
2776 *magicp = PPCMAGIC;
2777 return TRUE;
2778 break;
2779 #endif
2780 #ifdef I386MAGIC
2781 case bfd_arch_i386:
2782 *magicp = I386MAGIC;
2783 #ifdef LYNXOS
2784 /* Just overwrite the usual value if we're doing Lynx. */
2785 *magicp = LYNXCOFFMAGIC;
2786 #endif
2787 return TRUE;
2788 break;
2789 #endif
2790 #ifdef I860MAGIC
2791 case bfd_arch_i860:
2792 *magicp = I860MAGIC;
2793 return TRUE;
2794 break;
2795 #endif
2796 #ifdef IA64MAGIC
2797 case bfd_arch_ia64:
2798 *magicp = IA64MAGIC;
2799 return TRUE;
2800 break;
2801 #endif
2802 #ifdef MC68MAGIC
2803 case bfd_arch_m68k:
2804 #ifdef APOLLOM68KMAGIC
2805 *magicp = APOLLO_COFF_VERSION_NUMBER;
2806 #else
2807 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2808 #ifdef NAMES_HAVE_UNDERSCORE
2809 *magicp = MC68KBCSMAGIC;
2810 #else
2811 *magicp = MC68MAGIC;
2812 #endif
2813 #endif
2814 #ifdef LYNXOS
2815 /* Just overwrite the usual value if we're doing Lynx. */
2816 *magicp = LYNXCOFFMAGIC;
2817 #endif
2818 return TRUE;
2819 break;
2820 #endif
2822 #ifdef MC88MAGIC
2823 case bfd_arch_m88k:
2824 *magicp = MC88OMAGIC;
2825 return TRUE;
2826 break;
2827 #endif
2828 #ifdef H8300MAGIC
2829 case bfd_arch_h8300:
2830 switch (bfd_get_mach (abfd))
2832 case bfd_mach_h8300:
2833 *magicp = H8300MAGIC;
2834 return TRUE;
2835 case bfd_mach_h8300h:
2836 *magicp = H8300HMAGIC;
2837 return TRUE;
2838 case bfd_mach_h8300s:
2839 *magicp = H8300SMAGIC;
2840 return TRUE;
2841 case bfd_mach_h8300hn:
2842 *magicp = H8300HNMAGIC;
2843 return TRUE;
2844 case bfd_mach_h8300sn:
2845 *magicp = H8300SNMAGIC;
2846 return TRUE;
2848 break;
2849 #endif
2851 #ifdef SH_ARCH_MAGIC_BIG
2852 case bfd_arch_sh:
2853 #ifdef COFF_IMAGE_WITH_PE
2854 *magicp = SH_ARCH_MAGIC_WINCE;
2855 #else
2856 if (bfd_big_endian (abfd))
2857 *magicp = SH_ARCH_MAGIC_BIG;
2858 else
2859 *magicp = SH_ARCH_MAGIC_LITTLE;
2860 #endif
2861 return TRUE;
2862 break;
2863 #endif
2865 #ifdef MIPS_ARCH_MAGIC_WINCE
2866 case bfd_arch_mips:
2867 *magicp = MIPS_ARCH_MAGIC_WINCE;
2868 return TRUE;
2869 break;
2870 #endif
2872 #ifdef SPARCMAGIC
2873 case bfd_arch_sparc:
2874 *magicp = SPARCMAGIC;
2875 #ifdef LYNXOS
2876 /* Just overwrite the usual value if we're doing Lynx. */
2877 *magicp = LYNXCOFFMAGIC;
2878 #endif
2879 return TRUE;
2880 break;
2881 #endif
2883 #ifdef H8500MAGIC
2884 case bfd_arch_h8500:
2885 *magicp = H8500MAGIC;
2886 return TRUE;
2887 break;
2888 #endif
2889 #ifdef A29K_MAGIC_BIG
2890 case bfd_arch_a29k:
2891 if (bfd_big_endian (abfd))
2892 *magicp = A29K_MAGIC_BIG;
2893 else
2894 *magicp = A29K_MAGIC_LITTLE;
2895 return TRUE;
2896 break;
2897 #endif
2899 #ifdef WE32KMAGIC
2900 case bfd_arch_we32k:
2901 *magicp = WE32KMAGIC;
2902 return TRUE;
2903 break;
2904 #endif
2906 #ifdef RS6000COFF_C
2907 case bfd_arch_rs6000:
2908 #ifndef PPCMAGIC
2909 case bfd_arch_powerpc:
2910 #endif
2911 BFD_ASSERT (bfd_get_flavour (abfd) == bfd_target_xcoff_flavour);
2912 *magicp = bfd_xcoff_magic_number (abfd);
2913 return TRUE;
2914 break;
2915 #endif
2917 #ifdef MCOREMAGIC
2918 case bfd_arch_mcore:
2919 * magicp = MCOREMAGIC;
2920 return TRUE;
2921 #endif
2923 #ifdef W65MAGIC
2924 case bfd_arch_w65:
2925 *magicp = W65MAGIC;
2926 return TRUE;
2927 #endif
2929 #ifdef OR32_MAGIC_BIG
2930 case bfd_arch_or32:
2931 if (bfd_big_endian (abfd))
2932 * magicp = OR32_MAGIC_BIG;
2933 else
2934 * magicp = OR32_MAGIC_LITTLE;
2935 return TRUE;
2936 #endif
2938 #ifdef MAXQ20MAGIC
2939 case bfd_arch_maxq:
2940 * magicp = MAXQ20MAGIC;
2941 switch (bfd_get_mach (abfd))
2943 case bfd_mach_maxq10:
2944 * flagsp = F_MAXQ10;
2945 return TRUE;
2946 case bfd_mach_maxq20:
2947 * flagsp = F_MAXQ20;
2948 return TRUE;
2949 default:
2950 return FALSE;
2952 #endif
2954 default: /* Unknown architecture. */
2955 /* Fall through to "return FALSE" below, to avoid
2956 "statement never reached" errors on the one below. */
2957 break;
2960 return FALSE;
2963 static bfd_boolean
2964 coff_set_arch_mach (abfd, arch, machine)
2965 bfd * abfd;
2966 enum bfd_architecture arch;
2967 unsigned long machine;
2969 unsigned dummy1;
2970 unsigned short dummy2;
2972 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2973 return FALSE;
2975 if (arch != bfd_arch_unknown
2976 && ! coff_set_flags (abfd, &dummy1, &dummy2))
2977 return FALSE; /* We can't represent this type */
2979 return TRUE; /* We're easy ... */
2982 #ifdef COFF_IMAGE_WITH_PE
2984 /* This is used to sort sections by VMA, as required by PE image
2985 files. */
2987 static int sort_by_secaddr PARAMS ((const PTR, const PTR));
2989 static int
2990 sort_by_secaddr (arg1, arg2)
2991 const PTR arg1;
2992 const PTR arg2;
2994 const asection *a = *(const asection **) arg1;
2995 const asection *b = *(const asection **) arg2;
2997 if (a->vma < b->vma)
2998 return -1;
2999 else if (a->vma > b->vma)
3000 return 1;
3001 else
3002 return 0;
3005 #endif /* COFF_IMAGE_WITH_PE */
3007 /* Calculate the file position for each section. */
3009 #ifndef I960
3010 #define ALIGN_SECTIONS_IN_FILE
3011 #endif
3012 #if defined(TIC80COFF) || defined(TICOFF)
3013 #undef ALIGN_SECTIONS_IN_FILE
3014 #endif
3016 static bfd_boolean
3017 coff_compute_section_file_positions (abfd)
3018 bfd * abfd;
3020 asection *current;
3021 asection *previous = (asection *) NULL;
3022 file_ptr sofar = bfd_coff_filhsz (abfd);
3023 bfd_boolean align_adjust;
3024 #ifdef ALIGN_SECTIONS_IN_FILE
3025 file_ptr old_sofar;
3026 #endif
3028 #ifdef RS6000COFF_C
3029 /* On XCOFF, if we have symbols, set up the .debug section. */
3030 if (bfd_get_symcount (abfd) > 0)
3032 bfd_size_type sz;
3033 bfd_size_type i, symcount;
3034 asymbol **symp;
3036 sz = 0;
3037 symcount = bfd_get_symcount (abfd);
3038 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
3040 coff_symbol_type *cf;
3042 cf = coff_symbol_from (abfd, *symp);
3043 if (cf != NULL
3044 && cf->native != NULL
3045 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
3047 size_t len;
3049 len = strlen (bfd_asymbol_name (*symp));
3050 if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd))
3051 sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd);
3054 if (sz > 0)
3056 asection *dsec;
3058 dsec = bfd_make_section_old_way (abfd, DOT_DEBUG);
3059 if (dsec == NULL)
3060 abort ();
3061 dsec->size = sz;
3062 dsec->flags |= SEC_HAS_CONTENTS;
3065 #endif
3067 #ifdef COFF_IMAGE_WITH_PE
3068 int page_size;
3069 if (coff_data (abfd)->link_info)
3071 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
3073 /* If no file alignment has been set, default to one.
3074 This repairs 'ld -r' for arm-wince-pe target. */
3075 if (page_size == 0)
3076 page_size = 1;
3078 else
3079 page_size = PE_DEF_FILE_ALIGNMENT;
3080 #else
3081 #ifdef COFF_PAGE_SIZE
3082 int page_size = COFF_PAGE_SIZE;
3083 #endif
3084 #endif
3086 if (bfd_get_start_address (abfd))
3088 /* A start address may have been added to the original file. In this
3089 case it will need an optional header to record it. */
3090 abfd->flags |= EXEC_P;
3093 if (abfd->flags & EXEC_P)
3094 sofar += bfd_coff_aoutsz (abfd);
3095 #ifdef RS6000COFF_C
3096 else if (xcoff_data (abfd)->full_aouthdr)
3097 sofar += bfd_coff_aoutsz (abfd);
3098 else
3099 sofar += SMALL_AOUTSZ;
3100 #endif
3102 sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
3104 #ifdef RS6000COFF_C
3105 /* XCOFF handles overflows in the reloc and line number count fields
3106 by allocating a new section header to hold the correct counts. */
3107 for (current = abfd->sections; current != NULL; current = current->next)
3108 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3109 sofar += bfd_coff_scnhsz (abfd);
3110 #endif
3112 #ifdef COFF_IMAGE_WITH_PE
3114 /* PE requires the sections to be in memory order when listed in
3115 the section headers. It also does not like empty loadable
3116 sections. The sections apparently do not have to be in the
3117 right order in the image file itself, but we do need to get the
3118 target_index values right. */
3120 unsigned int count;
3121 asection **section_list;
3122 unsigned int i;
3123 int target_index;
3124 bfd_size_type amt;
3126 count = 0;
3127 for (current = abfd->sections; current != NULL; current = current->next)
3128 ++count;
3130 /* We allocate an extra cell to simplify the final loop. */
3131 amt = sizeof (struct asection *) * (count + 1);
3132 section_list = bfd_malloc (amt);
3133 if (section_list == NULL)
3134 return FALSE;
3136 i = 0;
3137 for (current = abfd->sections; current != NULL; current = current->next)
3139 section_list[i] = current;
3140 ++i;
3142 section_list[i] = NULL;
3144 qsort (section_list, count, sizeof (asection *), sort_by_secaddr);
3146 /* Rethread the linked list into sorted order; at the same time,
3147 assign target_index values. */
3148 target_index = 1;
3149 abfd->sections = section_list[0];
3150 for (i = 0; i < count; i++)
3152 current = section_list[i];
3153 current->next = section_list[i + 1];
3155 /* Later, if the section has zero size, we'll be throwing it
3156 away, so we don't want to number it now. Note that having
3157 a zero size and having real contents are different
3158 concepts: .bss has no contents, but (usually) non-zero
3159 size. */
3160 if (current->size == 0)
3162 /* Discard. However, it still might have (valid) symbols
3163 in it, so arbitrarily set it to section 1 (indexing is
3164 1-based here; usually .text). __end__ and other
3165 contents of .endsection really have this happen.
3166 FIXME: This seems somewhat dubious. */
3167 current->target_index = 1;
3169 else
3170 current->target_index = target_index++;
3172 abfd->section_tail = &current->next;
3174 free (section_list);
3176 #else /* ! COFF_IMAGE_WITH_PE */
3178 /* Set the target_index field. */
3179 int target_index;
3181 target_index = 1;
3182 for (current = abfd->sections; current != NULL; current = current->next)
3183 current->target_index = target_index++;
3185 #endif /* ! COFF_IMAGE_WITH_PE */
3187 align_adjust = FALSE;
3188 for (current = abfd->sections;
3189 current != (asection *) NULL;
3190 current = current->next)
3192 #ifdef COFF_IMAGE_WITH_PE
3193 /* With PE we have to pad each section to be a multiple of its
3194 page size too, and remember both sizes. */
3195 if (coff_section_data (abfd, current) == NULL)
3197 bfd_size_type amt = sizeof (struct coff_section_tdata);
3198 current->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
3199 if (current->used_by_bfd == NULL)
3200 return FALSE;
3202 if (pei_section_data (abfd, current) == NULL)
3204 bfd_size_type amt = sizeof (struct pei_section_tdata);
3205 coff_section_data (abfd, current)->tdata
3206 = (PTR) bfd_zalloc (abfd, amt);
3207 if (coff_section_data (abfd, current)->tdata == NULL)
3208 return FALSE;
3210 if (pei_section_data (abfd, current)->virt_size == 0)
3211 pei_section_data (abfd, current)->virt_size = current->size;
3212 #endif
3214 /* Only deal with sections which have contents. */
3215 if (!(current->flags & SEC_HAS_CONTENTS))
3216 continue;
3218 #ifdef COFF_IMAGE_WITH_PE
3219 /* Make sure we skip empty sections in a PE image. */
3220 if (current->size == 0)
3221 continue;
3222 #endif
3224 /* Align the sections in the file to the same boundary on
3225 which they are aligned in virtual memory. I960 doesn't
3226 do this (FIXME) so we can stay in sync with Intel. 960
3227 doesn't yet page from files... */
3228 #ifdef ALIGN_SECTIONS_IN_FILE
3229 if ((abfd->flags & EXEC_P) != 0)
3231 /* Make sure this section is aligned on the right boundary - by
3232 padding the previous section up if necessary. */
3234 old_sofar = sofar;
3235 #ifdef RS6000COFF_C
3236 /* AIX loader checks the text section alignment of (vma - filepos)
3237 So even though the filepos may be aligned wrt the o_algntext, for
3238 AIX executables, this check fails. This shows up when a native
3239 AIX executable is stripped with gnu strip because the default vma
3240 of native is 0x10000150 but default for gnu is 0x10000140. Gnu
3241 stripped gnu excutable passes this check because the filepos is
3242 0x0140. This problem also show up with 64 bit shared objects. The
3243 data section must also be aligned. */
3244 if (!strcmp (current->name, _TEXT)
3245 || !strcmp (current->name, _DATA))
3247 bfd_vma pad;
3248 bfd_vma align;
3250 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3252 align = 1 << current->alignment_power;
3253 pad = abs (current->vma - sofar) % align;
3255 if (pad)
3257 pad = align - pad;
3258 sofar += pad;
3261 else
3262 #else
3264 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3266 #endif
3267 if (previous != (asection *) NULL)
3268 previous->size += sofar - old_sofar;
3271 #endif
3273 /* In demand paged files the low order bits of the file offset
3274 must match the low order bits of the virtual address. */
3275 #ifdef COFF_PAGE_SIZE
3276 if ((abfd->flags & D_PAGED) != 0
3277 && (current->flags & SEC_ALLOC) != 0)
3278 sofar += (current->vma - (bfd_vma) sofar) % page_size;
3279 #endif
3280 current->filepos = sofar;
3282 #ifdef COFF_IMAGE_WITH_PE
3283 /* Set the padded size. */
3284 current->size = (current->size + page_size -1) & -page_size;
3285 #endif
3287 sofar += current->size;
3289 #ifdef ALIGN_SECTIONS_IN_FILE
3290 /* Make sure that this section is of the right size too. */
3291 if ((abfd->flags & EXEC_P) == 0)
3293 bfd_size_type old_size;
3295 old_size = current->size;
3296 current->size = BFD_ALIGN (current->size,
3297 1 << current->alignment_power);
3298 align_adjust = current->size != old_size;
3299 sofar += current->size - old_size;
3301 else
3303 old_sofar = sofar;
3304 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3305 align_adjust = sofar != old_sofar;
3306 current->size += sofar - old_sofar;
3308 #endif
3310 #ifdef COFF_IMAGE_WITH_PE
3311 /* For PE we need to make sure we pad out to the aligned
3312 size, in case the caller only writes out data to the
3313 unaligned size. */
3314 if (pei_section_data (abfd, current)->virt_size < current->size)
3315 align_adjust = TRUE;
3316 #endif
3318 #ifdef _LIB
3319 /* Force .lib sections to start at zero. The vma is then
3320 incremented in coff_set_section_contents. This is right for
3321 SVR3.2. */
3322 if (strcmp (current->name, _LIB) == 0)
3323 bfd_set_section_vma (abfd, current, 0);
3324 #endif
3326 previous = current;
3329 /* It is now safe to write to the output file. If we needed an
3330 alignment adjustment for the last section, then make sure that
3331 there is a byte at offset sofar. If there are no symbols and no
3332 relocs, then nothing follows the last section. If we don't force
3333 the last byte out, then the file may appear to be truncated. */
3334 if (align_adjust)
3336 bfd_byte b;
3338 b = 0;
3339 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
3340 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
3341 return FALSE;
3344 /* Make sure the relocations are aligned. We don't need to make
3345 sure that this byte exists, because it will only matter if there
3346 really are relocs. */
3347 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
3349 obj_relocbase (abfd) = sofar;
3350 abfd->output_has_begun = TRUE;
3352 return TRUE;
3355 #if 0
3357 /* This can never work, because it is called too late--after the
3358 section positions have been set. I can't figure out what it is
3359 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3361 /* If .file, .text, .data, .bss symbols are missing, add them. */
3362 /* @@ Should we only be adding missing symbols, or overriding the aux
3363 values for existing section symbols? */
3364 static bfd_boolean
3365 coff_add_missing_symbols (abfd)
3366 bfd *abfd;
3368 unsigned int nsyms = bfd_get_symcount (abfd);
3369 asymbol **sympp = abfd->outsymbols;
3370 asymbol **sympp2;
3371 unsigned int i;
3372 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
3373 bfd_size_type amt;
3375 for (i = 0; i < nsyms; i++)
3377 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
3378 const char *name;
3380 if (csym)
3382 /* Only do this if there is a coff representation of the input
3383 symbol. */
3384 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
3386 need_file = 0;
3387 continue;
3389 name = csym->symbol.name;
3390 if (!name)
3391 continue;
3392 if (!strcmp (name, _TEXT))
3393 need_text = 0;
3394 #ifdef APOLLO_M68
3395 else if (!strcmp (name, ".wtext"))
3396 need_text = 0;
3397 #endif
3398 else if (!strcmp (name, _DATA))
3399 need_data = 0;
3400 else if (!strcmp (name, _BSS))
3401 need_bss = 0;
3404 /* Now i == bfd_get_symcount (abfd). */
3405 /* @@ For now, don't deal with .file symbol. */
3406 need_file = 0;
3408 if (!need_text && !need_data && !need_bss && !need_file)
3409 return TRUE;
3410 nsyms += need_text + need_data + need_bss + need_file;
3411 amt = nsyms;
3412 amt *= sizeof (asymbol *);
3413 sympp2 = (asymbol **) bfd_alloc (abfd, amt);
3414 if (!sympp2)
3415 return FALSE;
3416 memcpy (sympp2, sympp, i * sizeof (asymbol *));
3418 if (need_file)
3419 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3420 abort ();
3422 if (need_text)
3423 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
3424 if (need_data)
3425 sympp2[i++] = coff_section_symbol (abfd, _DATA);
3426 if (need_bss)
3427 sympp2[i++] = coff_section_symbol (abfd, _BSS);
3428 BFD_ASSERT (i == nsyms);
3429 bfd_set_symtab (abfd, sympp2, nsyms);
3430 return TRUE;
3433 #endif /* 0 */
3435 #ifdef COFF_IMAGE_WITH_PE
3437 static unsigned int pelength;
3438 static unsigned int peheader;
3440 static bfd_boolean
3441 coff_read_word (abfd, value)
3442 bfd *abfd;
3443 unsigned int *value;
3445 unsigned char b[2];
3446 int status;
3448 status = bfd_bread (b, (bfd_size_type) 2, abfd);
3449 if (status < 1)
3451 *value = 0;
3452 return FALSE;
3455 if (status == 1)
3456 *value = (unsigned int) b[0];
3457 else
3458 *value = (unsigned int) (b[0] + (b[1] << 8));
3460 pelength += (unsigned int) status;
3462 return TRUE;
3465 static unsigned int
3466 coff_compute_checksum (abfd)
3467 bfd *abfd;
3469 bfd_boolean more_data;
3470 file_ptr filepos;
3471 unsigned int value;
3472 unsigned int total;
3474 total = 0;
3475 pelength = 0;
3476 filepos = (file_ptr) 0;
3480 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
3481 return 0;
3483 more_data = coff_read_word (abfd, &value);
3484 total += value;
3485 total = 0xffff & (total + (total >> 0x10));
3486 filepos += 2;
3488 while (more_data);
3490 return (0xffff & (total + (total >> 0x10)));
3493 static bfd_boolean
3494 coff_apply_checksum (abfd)
3495 bfd *abfd;
3497 unsigned int computed;
3498 unsigned int checksum = 0;
3500 if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0)
3501 return FALSE;
3503 if (!coff_read_word (abfd, &peheader))
3504 return FALSE;
3506 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3507 return FALSE;
3509 checksum = 0;
3510 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3512 if (bfd_seek (abfd, peheader, SEEK_SET) != 0)
3513 return FALSE;
3515 computed = coff_compute_checksum (abfd);
3517 checksum = computed + pelength;
3519 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3520 return FALSE;
3522 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3524 return TRUE;
3527 #endif /* COFF_IMAGE_WITH_PE */
3529 /* SUPPRESS 558 */
3530 /* SUPPRESS 529 */
3531 static bfd_boolean
3532 coff_write_object_contents (abfd)
3533 bfd * abfd;
3535 asection *current;
3536 bfd_boolean hasrelocs = FALSE;
3537 bfd_boolean haslinno = FALSE;
3538 bfd_boolean hasdebug = FALSE;
3539 file_ptr scn_base;
3540 file_ptr reloc_base;
3541 file_ptr lineno_base;
3542 file_ptr sym_base;
3543 unsigned long reloc_size = 0, reloc_count = 0;
3544 unsigned long lnno_size = 0;
3545 bfd_boolean long_section_names;
3546 asection *text_sec = NULL;
3547 asection *data_sec = NULL;
3548 asection *bss_sec = NULL;
3549 struct internal_filehdr internal_f;
3550 struct internal_aouthdr internal_a;
3551 #ifdef COFF_LONG_SECTION_NAMES
3552 size_t string_size = STRING_SIZE_SIZE;
3553 #endif
3555 bfd_set_error (bfd_error_system_call);
3557 /* Make a pass through the symbol table to count line number entries and
3558 put them into the correct asections. */
3560 lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd);
3562 if (! abfd->output_has_begun)
3564 if (! coff_compute_section_file_positions (abfd))
3565 return FALSE;
3568 reloc_base = obj_relocbase (abfd);
3570 /* Work out the size of the reloc and linno areas. */
3572 for (current = abfd->sections; current != NULL; current =
3573 current->next)
3575 #ifdef COFF_WITH_PE
3576 /* We store the actual reloc count in the first reloc's addr. */
3577 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3578 reloc_count ++;
3579 #endif
3580 reloc_count += current->reloc_count;
3583 reloc_size = reloc_count * bfd_coff_relsz (abfd);
3585 lineno_base = reloc_base + reloc_size;
3586 sym_base = lineno_base + lnno_size;
3588 /* Indicate in each section->line_filepos its actual file address. */
3589 for (current = abfd->sections; current != NULL; current =
3590 current->next)
3592 if (current->lineno_count)
3594 current->line_filepos = lineno_base;
3595 current->moving_line_filepos = lineno_base;
3596 lineno_base += current->lineno_count * bfd_coff_linesz (abfd);
3598 else
3600 current->line_filepos = 0;
3602 if (current->reloc_count)
3604 current->rel_filepos = reloc_base;
3605 reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
3606 #ifdef COFF_WITH_PE
3607 /* Extra reloc to hold real count. */
3608 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3609 reloc_base += bfd_coff_relsz (abfd);
3610 #endif
3612 else
3614 current->rel_filepos = 0;
3618 /* Write section headers to the file. */
3619 internal_f.f_nscns = 0;
3621 if ((abfd->flags & EXEC_P) != 0)
3622 scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
3623 else
3625 scn_base = bfd_coff_filhsz (abfd);
3626 #ifdef RS6000COFF_C
3627 #ifndef XCOFF64
3628 if (xcoff_data (abfd)->full_aouthdr)
3629 scn_base += bfd_coff_aoutsz (abfd);
3630 else
3631 scn_base += SMALL_AOUTSZ;
3632 #endif
3633 #endif
3636 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
3637 return FALSE;
3639 long_section_names = FALSE;
3640 for (current = abfd->sections;
3641 current != NULL;
3642 current = current->next)
3644 struct internal_scnhdr section;
3645 bfd_boolean is_reloc_section = FALSE;
3647 #ifdef COFF_IMAGE_WITH_PE
3648 if (strcmp (current->name, ".reloc") == 0)
3650 is_reloc_section = TRUE;
3651 hasrelocs = TRUE;
3652 pe_data (abfd)->has_reloc_section = 1;
3654 #endif
3656 internal_f.f_nscns++;
3658 strncpy (section.s_name, current->name, SCNNMLEN);
3660 #ifdef COFF_LONG_SECTION_NAMES
3661 /* Handle long section names as in PE. This must be compatible
3662 with the code in coff_write_symbols and _bfd_coff_final_link. */
3664 size_t len;
3666 len = strlen (current->name);
3667 if (len > SCNNMLEN)
3669 memset (section.s_name, 0, SCNNMLEN);
3670 sprintf (section.s_name, "/%lu", (unsigned long) string_size);
3671 string_size += len + 1;
3672 long_section_names = TRUE;
3675 #endif
3677 #ifdef _LIB
3678 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3679 Ian Taylor <ian@cygnus.com>. */
3680 if (strcmp (current->name, _LIB) == 0)
3681 section.s_vaddr = 0;
3682 else
3683 #endif
3684 section.s_vaddr = current->vma;
3685 section.s_paddr = current->lma;
3686 section.s_size = current->size;
3687 #ifdef coff_get_section_load_page
3688 section.s_page = coff_get_section_load_page (current);
3689 #endif
3691 #ifdef COFF_WITH_PE
3692 section.s_paddr = 0;
3693 #endif
3694 #ifdef COFF_IMAGE_WITH_PE
3695 /* Reminder: s_paddr holds the virtual size of the section. */
3696 if (coff_section_data (abfd, current) != NULL
3697 && pei_section_data (abfd, current) != NULL)
3698 section.s_paddr = pei_section_data (abfd, current)->virt_size;
3699 else
3700 section.s_paddr = 0;
3701 #endif
3703 /* If this section has no size or is unloadable then the scnptr
3704 will be 0 too. */
3705 if (current->size == 0
3706 || (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
3707 section.s_scnptr = 0;
3708 else
3709 section.s_scnptr = current->filepos;
3711 section.s_relptr = current->rel_filepos;
3712 section.s_lnnoptr = current->line_filepos;
3713 section.s_nreloc = current->reloc_count;
3714 section.s_nlnno = current->lineno_count;
3715 #ifndef COFF_IMAGE_WITH_PE
3716 /* In PEI, relocs come in the .reloc section. */
3717 if (current->reloc_count != 0)
3718 hasrelocs = TRUE;
3719 #endif
3720 if (current->lineno_count != 0)
3721 haslinno = TRUE;
3722 if ((current->flags & SEC_DEBUGGING) != 0
3723 && ! is_reloc_section)
3724 hasdebug = TRUE;
3726 #ifdef RS6000COFF_C
3727 #ifndef XCOFF64
3728 /* Indicate the use of an XCOFF overflow section header. */
3729 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3731 section.s_nreloc = 0xffff;
3732 section.s_nlnno = 0xffff;
3734 #endif
3735 #endif
3737 section.s_flags = sec_to_styp_flags (current->name, current->flags);
3739 if (!strcmp (current->name, _TEXT))
3740 text_sec = current;
3741 else if (!strcmp (current->name, _DATA))
3742 data_sec = current;
3743 else if (!strcmp (current->name, _BSS))
3744 bss_sec = current;
3746 #ifdef I960
3747 section.s_align = (current->alignment_power
3748 ? 1 << current->alignment_power
3749 : 0);
3750 #endif
3751 #ifdef TIC80COFF
3752 /* TI COFF puts the alignment power in bits 8-11 of the flags. */
3753 section.s_flags |= (current->alignment_power & 0xF) << 8;
3754 #endif
3755 #ifdef COFF_ENCODE_ALIGNMENT
3756 COFF_ENCODE_ALIGNMENT(section, current->alignment_power);
3757 #endif
3759 #ifdef COFF_IMAGE_WITH_PE
3760 /* Suppress output of the sections if they are null. ld
3761 includes the bss and data sections even if there is no size
3762 assigned to them. NT loader doesn't like it if these section
3763 headers are included if the sections themselves are not
3764 needed. See also coff_compute_section_file_positions. */
3765 if (section.s_size == 0)
3766 internal_f.f_nscns--;
3767 else
3768 #endif
3770 SCNHDR buff;
3771 bfd_size_type amt = bfd_coff_scnhsz (abfd);
3773 if (coff_swap_scnhdr_out (abfd, &section, &buff) == 0
3774 || bfd_bwrite ((PTR) &buff, amt, abfd) != amt)
3775 return FALSE;
3778 #ifdef COFF_WITH_PE
3779 /* PE stores COMDAT section information in the symbol table. If
3780 this section is supposed to have some COMDAT info, track down
3781 the symbol in the symbol table and modify it. */
3782 if ((current->flags & SEC_LINK_ONCE) != 0)
3784 unsigned int i, count;
3785 asymbol **psym;
3786 coff_symbol_type *csym = NULL;
3787 asymbol **psymsec;
3789 psymsec = NULL;
3790 count = bfd_get_symcount (abfd);
3791 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
3793 if ((*psym)->section != current)
3794 continue;
3796 /* Remember the location of the first symbol in this
3797 section. */
3798 if (psymsec == NULL)
3799 psymsec = psym;
3801 /* See if this is the section symbol. */
3802 if (strcmp ((*psym)->name, current->name) == 0)
3804 csym = coff_symbol_from (abfd, *psym);
3805 if (csym == NULL
3806 || csym->native == NULL
3807 || csym->native->u.syment.n_numaux < 1
3808 || csym->native->u.syment.n_sclass != C_STAT
3809 || csym->native->u.syment.n_type != T_NULL)
3810 continue;
3812 /* Here *PSYM is the section symbol for CURRENT. */
3814 break;
3818 /* Did we find it?
3819 Note that we might not if we're converting the file from
3820 some other object file format. */
3821 if (i < count)
3823 combined_entry_type *aux;
3825 /* We don't touch the x_checksum field. The
3826 x_associated field is not currently supported. */
3828 aux = csym->native + 1;
3829 switch (current->flags & SEC_LINK_DUPLICATES)
3831 case SEC_LINK_DUPLICATES_DISCARD:
3832 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
3833 break;
3835 case SEC_LINK_DUPLICATES_ONE_ONLY:
3836 aux->u.auxent.x_scn.x_comdat =
3837 IMAGE_COMDAT_SELECT_NODUPLICATES;
3838 break;
3840 case SEC_LINK_DUPLICATES_SAME_SIZE:
3841 aux->u.auxent.x_scn.x_comdat =
3842 IMAGE_COMDAT_SELECT_SAME_SIZE;
3843 break;
3845 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
3846 aux->u.auxent.x_scn.x_comdat =
3847 IMAGE_COMDAT_SELECT_EXACT_MATCH;
3848 break;
3851 /* The COMDAT symbol must be the first symbol from this
3852 section in the symbol table. In order to make this
3853 work, we move the COMDAT symbol before the first
3854 symbol we found in the search above. It's OK to
3855 rearrange the symbol table at this point, because
3856 coff_renumber_symbols is going to rearrange it
3857 further and fix up all the aux entries. */
3858 if (psym != psymsec)
3860 asymbol *hold;
3861 asymbol **pcopy;
3863 hold = *psym;
3864 for (pcopy = psym; pcopy > psymsec; pcopy--)
3865 pcopy[0] = pcopy[-1];
3866 *psymsec = hold;
3870 #endif /* COFF_WITH_PE */
3873 #ifdef RS6000COFF_C
3874 #ifndef XCOFF64
3875 /* XCOFF handles overflows in the reloc and line number count fields
3876 by creating a new section header to hold the correct values. */
3877 for (current = abfd->sections; current != NULL; current = current->next)
3879 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3881 struct internal_scnhdr scnhdr;
3882 SCNHDR buff;
3883 bfd_size_type amt;
3885 internal_f.f_nscns++;
3886 strncpy (&(scnhdr.s_name[0]), current->name, 8);
3887 scnhdr.s_paddr = current->reloc_count;
3888 scnhdr.s_vaddr = current->lineno_count;
3889 scnhdr.s_size = 0;
3890 scnhdr.s_scnptr = 0;
3891 scnhdr.s_relptr = current->rel_filepos;
3892 scnhdr.s_lnnoptr = current->line_filepos;
3893 scnhdr.s_nreloc = current->target_index;
3894 scnhdr.s_nlnno = current->target_index;
3895 scnhdr.s_flags = STYP_OVRFLO;
3896 amt = bfd_coff_scnhsz (abfd);
3897 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
3898 || bfd_bwrite ((PTR) &buff, amt, abfd) != amt)
3899 return FALSE;
3902 #endif
3903 #endif
3905 /* OK, now set up the filehdr... */
3907 /* Don't include the internal abs section in the section count */
3909 /* We will NOT put a fucking timestamp in the header here. Every time you
3910 put it back, I will come in and take it out again. I'm sorry. This
3911 field does not belong here. We fill it with a 0 so it compares the
3912 same but is not a reasonable time. -- gnu@cygnus.com */
3913 internal_f.f_timdat = 0;
3914 internal_f.f_flags = 0;
3916 if (abfd->flags & EXEC_P)
3917 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3918 else
3920 internal_f.f_opthdr = 0;
3921 #ifdef RS6000COFF_C
3922 #ifndef XCOFF64
3923 if (xcoff_data (abfd)->full_aouthdr)
3924 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3925 else
3926 internal_f.f_opthdr = SMALL_AOUTSZ;
3927 #endif
3928 #endif
3931 if (!hasrelocs)
3932 internal_f.f_flags |= F_RELFLG;
3933 if (!haslinno)
3934 internal_f.f_flags |= F_LNNO;
3935 if (abfd->flags & EXEC_P)
3936 internal_f.f_flags |= F_EXEC;
3937 #ifdef COFF_IMAGE_WITH_PE
3938 if (! hasdebug)
3939 internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED;
3940 if (pe_data (abfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE)
3941 internal_f.f_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
3942 #endif
3944 #ifdef COFF_WITH_PE
3945 internal_f.f_flags |= IMAGE_FILE_32BIT_MACHINE;
3946 #else
3947 if (bfd_little_endian (abfd))
3948 internal_f.f_flags |= F_AR32WR;
3949 else
3950 internal_f.f_flags |= F_AR32W;
3951 #endif
3953 #ifdef TI_TARGET_ID
3954 /* Target id is used in TI COFF v1 and later; COFF0 won't use this field,
3955 but it doesn't hurt to set it internally. */
3956 internal_f.f_target_id = TI_TARGET_ID;
3957 #endif
3958 #ifdef TIC80_TARGET_ID
3959 internal_f.f_target_id = TIC80_TARGET_ID;
3960 #endif
3962 /* FIXME, should do something about the other byte orders and
3963 architectures. */
3965 #ifdef RS6000COFF_C
3966 if ((abfd->flags & DYNAMIC) != 0)
3967 internal_f.f_flags |= F_SHROBJ;
3968 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
3969 internal_f.f_flags |= F_DYNLOAD;
3970 #endif
3972 memset (&internal_a, 0, sizeof internal_a);
3974 /* Set up architecture-dependent stuff. */
3976 unsigned int magic = 0;
3977 unsigned short flags = 0;
3979 coff_set_flags (abfd, &magic, &flags);
3980 internal_f.f_magic = magic;
3981 internal_f.f_flags |= flags;
3982 /* ...and the "opt"hdr... */
3984 #ifdef A29K
3985 #ifdef ULTRA3 /* NYU's machine */
3986 /* FIXME: This is a bogus check. I really want to see if there
3987 is a .shbss or a .shdata section, if so then set the magic
3988 number to indicate a shared data executable. */
3989 if (internal_f.f_nscns >= 7)
3990 internal_a.magic = SHMAGIC; /* Shared magic. */
3991 else
3992 #endif /* ULTRA3 */
3993 internal_a.magic = NMAGIC; /* Assume separate i/d. */
3994 #define __A_MAGIC_SET__
3995 #endif /* A29K */
3996 #ifdef TICOFF_AOUT_MAGIC
3997 internal_a.magic = TICOFF_AOUT_MAGIC;
3998 #define __A_MAGIC_SET__
3999 #endif
4000 #ifdef TIC80COFF
4001 internal_a.magic = TIC80_ARCH_MAGIC;
4002 #define __A_MAGIC_SET__
4003 #endif /* TIC80 */
4004 #ifdef I860
4005 /* FIXME: What are the a.out magic numbers for the i860? */
4006 internal_a.magic = 0;
4007 #define __A_MAGIC_SET__
4008 #endif /* I860 */
4009 #ifdef I960
4010 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
4011 #define __A_MAGIC_SET__
4012 #endif /* I960 */
4013 #if M88
4014 #define __A_MAGIC_SET__
4015 internal_a.magic = PAGEMAGICBCS;
4016 #endif /* M88 */
4018 #if APOLLO_M68
4019 #define __A_MAGIC_SET__
4020 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
4021 #endif
4023 #if defined(M68) || defined(WE32K) || defined(M68K)
4024 #define __A_MAGIC_SET__
4025 #if defined(LYNXOS)
4026 internal_a.magic = LYNXCOFFMAGIC;
4027 #else
4028 #if defined(TARG_AUX)
4029 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
4030 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
4031 PAGEMAGICEXECSWAPPED);
4032 #else
4033 #if defined (PAGEMAGICPEXECPAGED)
4034 internal_a.magic = PAGEMAGICPEXECPAGED;
4035 #endif
4036 #endif /* TARG_AUX */
4037 #endif /* LYNXOS */
4038 #endif /* M68 || WE32K || M68K */
4040 #if defined(ARM)
4041 #define __A_MAGIC_SET__
4042 internal_a.magic = ZMAGIC;
4043 #endif
4045 #if defined(PPC_PE)
4046 #define __A_MAGIC_SET__
4047 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
4048 #endif
4050 #if defined MCORE_PE
4051 #define __A_MAGIC_SET__
4052 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
4053 #endif
4055 #if defined(I386)
4056 #define __A_MAGIC_SET__
4057 #if defined(LYNXOS)
4058 internal_a.magic = LYNXCOFFMAGIC;
4059 #else /* LYNXOS */
4060 internal_a.magic = ZMAGIC;
4061 #endif /* LYNXOS */
4062 #endif /* I386 */
4064 #if defined(IA64)
4065 #define __A_MAGIC_SET__
4066 internal_a.magic = ZMAGIC;
4067 #endif /* IA64 */
4069 #if defined(SPARC)
4070 #define __A_MAGIC_SET__
4071 #if defined(LYNXOS)
4072 internal_a.magic = LYNXCOFFMAGIC;
4073 #endif /* LYNXOS */
4074 #endif /* SPARC */
4076 #ifdef RS6000COFF_C
4077 #define __A_MAGIC_SET__
4078 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
4079 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
4080 RS6K_AOUTHDR_OMAGIC;
4081 #endif
4083 #if defined(SH) && defined(COFF_WITH_PE)
4084 #define __A_MAGIC_SET__
4085 internal_a.magic = SH_PE_MAGIC;
4086 #endif
4088 #if defined(MIPS) && defined(COFF_WITH_PE)
4089 #define __A_MAGIC_SET__
4090 internal_a.magic = MIPS_PE_MAGIC;
4091 #endif
4093 #ifdef OR32
4094 #define __A_MAGIC_SET__
4095 internal_a.magic = NMAGIC; /* Assume separate i/d. */
4096 #endif
4098 #ifdef MAXQ20MAGIC
4099 #define __A_MAGIC_SET__
4100 internal_a.magic = MAXQ20MAGIC;
4101 #endif
4103 #ifndef __A_MAGIC_SET__
4104 #include "Your aouthdr magic number is not being set!"
4105 #else
4106 #undef __A_MAGIC_SET__
4107 #endif
4110 /* FIXME: Does anybody ever set this to another value? */
4111 internal_a.vstamp = 0;
4113 /* Now should write relocs, strings, syms. */
4114 obj_sym_filepos (abfd) = sym_base;
4116 if (bfd_get_symcount (abfd) != 0)
4118 int firstundef;
4119 #if 0
4120 if (!coff_add_missing_symbols (abfd))
4121 return FALSE;
4122 #endif
4123 if (!coff_renumber_symbols (abfd, &firstundef))
4124 return FALSE;
4125 coff_mangle_symbols (abfd);
4126 if (! coff_write_symbols (abfd))
4127 return FALSE;
4128 if (! coff_write_linenumbers (abfd))
4129 return FALSE;
4130 if (! coff_write_relocs (abfd, firstundef))
4131 return FALSE;
4133 #ifdef COFF_LONG_SECTION_NAMES
4134 else if (long_section_names && ! obj_coff_strings_written (abfd))
4136 /* If we have long section names we have to write out the string
4137 table even if there are no symbols. */
4138 if (! coff_write_symbols (abfd))
4139 return FALSE;
4141 #endif
4142 #ifdef COFF_IMAGE_WITH_PE
4143 #ifdef PPC_PE
4144 else if ((abfd->flags & EXEC_P) != 0)
4146 bfd_byte b;
4148 /* PowerPC PE appears to require that all executable files be
4149 rounded up to the page size. */
4150 b = 0;
4151 if (bfd_seek (abfd,
4152 (file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
4153 SEEK_SET) != 0
4154 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
4155 return FALSE;
4157 #endif
4158 #endif
4160 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
4161 backend linker, and obj_raw_syment_count is not valid until after
4162 coff_write_symbols is called. */
4163 if (obj_raw_syment_count (abfd) != 0)
4165 internal_f.f_symptr = sym_base;
4166 #ifdef RS6000COFF_C
4167 /* AIX appears to require that F_RELFLG not be set if there are
4168 local symbols but no relocations. */
4169 internal_f.f_flags &=~ F_RELFLG;
4170 #endif
4172 else
4174 if (long_section_names)
4175 internal_f.f_symptr = sym_base;
4176 else
4177 internal_f.f_symptr = 0;
4178 internal_f.f_flags |= F_LSYMS;
4181 if (text_sec)
4183 internal_a.tsize = text_sec->size;
4184 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
4186 if (data_sec)
4188 internal_a.dsize = data_sec->size;
4189 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
4191 if (bss_sec)
4193 internal_a.bsize = bss_sec->size;
4194 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
4195 internal_a.data_start = bss_sec->vma;
4198 internal_a.entry = bfd_get_start_address (abfd);
4199 internal_f.f_nsyms = obj_raw_syment_count (abfd);
4201 #ifdef RS6000COFF_C
4202 if (xcoff_data (abfd)->full_aouthdr)
4204 bfd_vma toc;
4205 asection *loader_sec;
4207 internal_a.vstamp = 1;
4209 internal_a.o_snentry = xcoff_data (abfd)->snentry;
4210 if (internal_a.o_snentry == 0)
4211 internal_a.entry = (bfd_vma) -1;
4213 if (text_sec != NULL)
4215 internal_a.o_sntext = text_sec->target_index;
4216 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
4218 else
4220 internal_a.o_sntext = 0;
4221 internal_a.o_algntext = 0;
4223 if (data_sec != NULL)
4225 internal_a.o_sndata = data_sec->target_index;
4226 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
4228 else
4230 internal_a.o_sndata = 0;
4231 internal_a.o_algndata = 0;
4233 loader_sec = bfd_get_section_by_name (abfd, ".loader");
4234 if (loader_sec != NULL)
4235 internal_a.o_snloader = loader_sec->target_index;
4236 else
4237 internal_a.o_snloader = 0;
4238 if (bss_sec != NULL)
4239 internal_a.o_snbss = bss_sec->target_index;
4240 else
4241 internal_a.o_snbss = 0;
4243 toc = xcoff_data (abfd)->toc;
4244 internal_a.o_toc = toc;
4245 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
4247 internal_a.o_modtype = xcoff_data (abfd)->modtype;
4248 if (xcoff_data (abfd)->cputype != -1)
4249 internal_a.o_cputype = xcoff_data (abfd)->cputype;
4250 else
4252 switch (bfd_get_arch (abfd))
4254 case bfd_arch_rs6000:
4255 internal_a.o_cputype = 4;
4256 break;
4257 case bfd_arch_powerpc:
4258 if (bfd_get_mach (abfd) == bfd_mach_ppc)
4259 internal_a.o_cputype = 3;
4260 else
4261 internal_a.o_cputype = 1;
4262 break;
4263 default:
4264 abort ();
4267 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
4268 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
4270 #endif
4272 /* now write them */
4273 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
4274 return FALSE;
4277 char * buff;
4278 bfd_size_type amount = bfd_coff_filhsz (abfd);
4280 buff = bfd_malloc (amount);
4281 if (buff == NULL)
4282 return FALSE;
4284 bfd_coff_swap_filehdr_out (abfd, (PTR) &internal_f, (PTR) buff);
4285 amount = bfd_bwrite ((PTR) buff, amount, abfd);
4287 free (buff);
4289 if (amount != bfd_coff_filhsz (abfd))
4290 return FALSE;
4293 if (abfd->flags & EXEC_P)
4295 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
4296 include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)). */
4297 char * buff;
4298 bfd_size_type amount = bfd_coff_aoutsz (abfd);
4300 buff = bfd_malloc (amount);
4301 if (buff == NULL)
4302 return FALSE;
4304 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) buff);
4305 amount = bfd_bwrite ((PTR) buff, amount, abfd);
4307 free (buff);
4309 if (amount != bfd_coff_aoutsz (abfd))
4310 return FALSE;
4312 #ifdef COFF_IMAGE_WITH_PE
4313 if (! coff_apply_checksum (abfd))
4314 return FALSE;
4315 #endif
4317 #ifdef RS6000COFF_C
4318 else
4320 AOUTHDR buff;
4321 size_t size;
4323 /* XCOFF seems to always write at least a small a.out header. */
4324 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff);
4325 if (xcoff_data (abfd)->full_aouthdr)
4326 size = bfd_coff_aoutsz (abfd);
4327 else
4328 size = SMALL_AOUTSZ;
4329 if (bfd_bwrite ((PTR) &buff, (bfd_size_type) size, abfd) != size)
4330 return FALSE;
4332 #endif
4334 return TRUE;
4337 static bfd_boolean
4338 coff_set_section_contents (abfd, section, location, offset, count)
4339 bfd * abfd;
4340 sec_ptr section;
4341 const PTR location;
4342 file_ptr offset;
4343 bfd_size_type count;
4345 if (! abfd->output_has_begun) /* Set by bfd.c handler. */
4347 if (! coff_compute_section_file_positions (abfd))
4348 return FALSE;
4351 #if defined(_LIB) && !defined(TARG_AUX)
4353 /* The physical address field of a .lib section is used to hold the
4354 number of shared libraries in the section. This code counts the
4355 number of sections being written, and increments the lma field
4356 with the number.
4358 I have found no documentation on the contents of this section.
4359 Experimentation indicates that the section contains zero or more
4360 records, each of which has the following structure:
4362 - a (four byte) word holding the length of this record, in words,
4363 - a word that always seems to be set to "2",
4364 - the path to a shared library, null-terminated and then padded
4365 to a whole word boundary.
4367 bfd_assert calls have been added to alert if an attempt is made
4368 to write a section which doesn't follow these assumptions. The
4369 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4370 <robertl@arnet.com> (Thanks!).
4372 Gvran Uddeborg <gvran@uddeborg.pp.se>. */
4374 if (strcmp (section->name, _LIB) == 0)
4376 bfd_byte *rec, *recend;
4378 rec = (bfd_byte *) location;
4379 recend = rec + count;
4380 while (rec < recend)
4382 ++section->lma;
4383 rec += bfd_get_32 (abfd, rec) * 4;
4386 BFD_ASSERT (rec == recend);
4389 #endif
4391 /* Don't write out bss sections - one way to do this is to
4392 see if the filepos has not been set. */
4393 if (section->filepos == 0)
4394 return TRUE;
4396 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
4397 return FALSE;
4399 if (count == 0)
4400 return TRUE;
4402 return bfd_bwrite (location, count, abfd) == count;
4404 #if 0
4405 static bfd_boolean
4406 coff_close_and_cleanup (abfd)
4407 bfd *abfd;
4409 if (!bfd_read_p (abfd))
4410 switch (abfd->format)
4412 case bfd_archive:
4413 if (!_bfd_write_archive_contents (abfd))
4414 return FALSE;
4415 break;
4416 case bfd_object:
4417 if (!coff_write_object_contents (abfd))
4418 return FALSE;
4419 break;
4420 default:
4421 bfd_set_error (bfd_error_invalid_operation);
4422 return FALSE;
4425 /* We depend on bfd_close to free all the memory on the objalloc. */
4426 return TRUE;
4429 #endif
4431 static PTR
4432 buy_and_read (abfd, where, size)
4433 bfd *abfd;
4434 file_ptr where;
4435 bfd_size_type size;
4437 PTR area = (PTR) bfd_alloc (abfd, size);
4438 if (!area)
4439 return (NULL);
4440 if (bfd_seek (abfd, where, SEEK_SET) != 0
4441 || bfd_bread (area, size, abfd) != size)
4442 return (NULL);
4443 return (area);
4444 } /* buy_and_read() */
4447 SUBSUBSECTION
4448 Reading linenumbers
4450 Creating the linenumber table is done by reading in the entire
4451 coff linenumber table, and creating another table for internal use.
4453 A coff linenumber table is structured so that each function
4454 is marked as having a line number of 0. Each line within the
4455 function is an offset from the first line in the function. The
4456 base of the line number information for the table is stored in
4457 the symbol associated with the function.
4459 Note: The PE format uses line number 0 for a flag indicating a
4460 new source file.
4462 The information is copied from the external to the internal
4463 table, and each symbol which marks a function is marked by
4464 pointing its...
4466 How does this work ?
4470 static bfd_boolean
4471 coff_slurp_line_table (abfd, asect)
4472 bfd *abfd;
4473 asection *asect;
4475 LINENO *native_lineno;
4476 alent *lineno_cache;
4477 bfd_size_type amt;
4479 BFD_ASSERT (asect->lineno == (alent *) NULL);
4481 amt = (bfd_size_type) bfd_coff_linesz (abfd) * asect->lineno_count;
4482 native_lineno = (LINENO *) buy_and_read (abfd, asect->line_filepos, amt);
4483 if (native_lineno == NULL)
4485 (*_bfd_error_handler)
4486 (_("%B: warning: line number table read failed"), abfd);
4487 return FALSE;
4489 amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent);
4490 lineno_cache = (alent *) bfd_alloc (abfd, amt);
4491 if (lineno_cache == NULL)
4492 return FALSE;
4493 else
4495 unsigned int counter = 0;
4496 alent *cache_ptr = lineno_cache;
4497 LINENO *src = native_lineno;
4499 while (counter < asect->lineno_count)
4501 struct internal_lineno dst;
4503 bfd_coff_swap_lineno_in (abfd, src, &dst);
4504 cache_ptr->line_number = dst.l_lnno;
4506 if (cache_ptr->line_number == 0)
4508 bfd_boolean warned;
4509 bfd_signed_vma symndx;
4510 coff_symbol_type *sym;
4512 warned = FALSE;
4513 symndx = dst.l_addr.l_symndx;
4514 if (symndx < 0
4515 || (bfd_vma) symndx >= obj_raw_syment_count (abfd))
4517 (*_bfd_error_handler)
4518 (_("%B: warning: illegal symbol index %ld in line numbers"),
4519 abfd, dst.l_addr.l_symndx);
4520 symndx = 0;
4521 warned = TRUE;
4523 /* FIXME: We should not be casting between ints and
4524 pointers like this. */
4525 sym = ((coff_symbol_type *)
4526 ((symndx + obj_raw_syments (abfd))
4527 ->u.syment._n._n_n._n_zeroes));
4528 cache_ptr->u.sym = (asymbol *) sym;
4529 if (sym->lineno != NULL && ! warned)
4531 (*_bfd_error_handler)
4532 (_("%B: warning: duplicate line number information for `%s'"),
4533 abfd, bfd_asymbol_name (&sym->symbol));
4535 sym->lineno = cache_ptr;
4537 else
4539 cache_ptr->u.offset = dst.l_addr.l_paddr
4540 - bfd_section_vma (abfd, asect);
4541 } /* If no linenumber expect a symbol index */
4543 cache_ptr++;
4544 src++;
4545 counter++;
4547 cache_ptr->line_number = 0;
4550 asect->lineno = lineno_cache;
4551 /* FIXME, free native_lineno here, or use alloca or something. */
4552 return TRUE;
4555 /* Slurp in the symbol table, converting it to generic form. Note
4556 that if coff_relocate_section is defined, the linker will read
4557 symbols via coff_link_add_symbols, rather than via this routine. */
4559 static bfd_boolean
4560 coff_slurp_symbol_table (abfd)
4561 bfd * abfd;
4563 combined_entry_type *native_symbols;
4564 coff_symbol_type *cached_area;
4565 unsigned int *table_ptr;
4566 bfd_size_type amt;
4567 unsigned int number_of_symbols = 0;
4569 if (obj_symbols (abfd))
4570 return TRUE;
4572 /* Read in the symbol table. */
4573 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
4574 return FALSE;
4576 /* Allocate enough room for all the symbols in cached form. */
4577 amt = obj_raw_syment_count (abfd);
4578 amt *= sizeof (coff_symbol_type);
4579 cached_area = (coff_symbol_type *) bfd_alloc (abfd, amt);
4580 if (cached_area == NULL)
4581 return FALSE;
4583 amt = obj_raw_syment_count (abfd);
4584 amt *= sizeof (unsigned int);
4585 table_ptr = (unsigned int *) bfd_alloc (abfd, amt);
4587 if (table_ptr == NULL)
4588 return FALSE;
4589 else
4591 coff_symbol_type *dst = cached_area;
4592 unsigned int last_native_index = obj_raw_syment_count (abfd);
4593 unsigned int this_index = 0;
4595 while (this_index < last_native_index)
4597 combined_entry_type *src = native_symbols + this_index;
4598 table_ptr[this_index] = number_of_symbols;
4599 dst->symbol.the_bfd = abfd;
4601 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
4602 /* We use the native name field to point to the cached field. */
4603 src->u.syment._n._n_n._n_zeroes = (long) dst;
4604 dst->symbol.section = coff_section_from_bfd_index (abfd,
4605 src->u.syment.n_scnum);
4606 dst->symbol.flags = 0;
4607 dst->done_lineno = FALSE;
4609 switch (src->u.syment.n_sclass)
4611 #ifdef I960
4612 case C_LEAFEXT:
4613 #if 0
4614 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
4615 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4616 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4617 #endif
4618 /* Fall through to next case. */
4619 #endif
4621 case C_EXT:
4622 case C_WEAKEXT:
4623 #if defined ARM
4624 case C_THUMBEXT:
4625 case C_THUMBEXTFUNC:
4626 #endif
4627 #ifdef RS6000COFF_C
4628 case C_HIDEXT:
4629 #endif
4630 #ifdef C_SYSTEM
4631 case C_SYSTEM: /* System Wide variable. */
4632 #endif
4633 #ifdef COFF_WITH_PE
4634 /* In PE, 0x68 (104) denotes a section symbol. */
4635 case C_SECTION:
4636 /* In PE, 0x69 (105) denotes a weak external symbol. */
4637 case C_NT_WEAK:
4638 #endif
4639 switch (coff_classify_symbol (abfd, &src->u.syment))
4641 case COFF_SYMBOL_GLOBAL:
4642 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4643 #if defined COFF_WITH_PE
4644 /* PE sets the symbol to a value relative to the
4645 start of the section. */
4646 dst->symbol.value = src->u.syment.n_value;
4647 #else
4648 dst->symbol.value = (src->u.syment.n_value
4649 - dst->symbol.section->vma);
4650 #endif
4651 if (ISFCN ((src->u.syment.n_type)))
4653 /* A function ext does not go at the end of a
4654 file. */
4655 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4657 break;
4659 case COFF_SYMBOL_COMMON:
4660 dst->symbol.section = bfd_com_section_ptr;
4661 dst->symbol.value = src->u.syment.n_value;
4662 break;
4664 case COFF_SYMBOL_UNDEFINED:
4665 dst->symbol.section = bfd_und_section_ptr;
4666 dst->symbol.value = 0;
4667 break;
4669 case COFF_SYMBOL_PE_SECTION:
4670 dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM;
4671 dst->symbol.value = 0;
4672 break;
4674 case COFF_SYMBOL_LOCAL:
4675 dst->symbol.flags = BSF_LOCAL;
4676 #if defined COFF_WITH_PE
4677 /* PE sets the symbol to a value relative to the
4678 start of the section. */
4679 dst->symbol.value = src->u.syment.n_value;
4680 #else
4681 dst->symbol.value = (src->u.syment.n_value
4682 - dst->symbol.section->vma);
4683 #endif
4684 if (ISFCN ((src->u.syment.n_type)))
4685 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4686 break;
4689 #ifdef RS6000COFF_C
4690 /* A symbol with a csect entry should not go at the end. */
4691 if (src->u.syment.n_numaux > 0)
4692 dst->symbol.flags |= BSF_NOT_AT_END;
4693 #endif
4695 #ifdef COFF_WITH_PE
4696 if (src->u.syment.n_sclass == C_NT_WEAK)
4697 dst->symbol.flags |= BSF_WEAK;
4699 if (src->u.syment.n_sclass == C_SECTION
4700 && src->u.syment.n_scnum > 0)
4701 dst->symbol.flags = BSF_LOCAL;
4702 #endif
4703 if (src->u.syment.n_sclass == C_WEAKEXT)
4704 dst->symbol.flags |= BSF_WEAK;
4706 break;
4708 case C_STAT: /* Static. */
4709 #ifdef I960
4710 case C_LEAFSTAT: /* Static leaf procedure. */
4711 #endif
4712 #if defined ARM
4713 case C_THUMBSTAT: /* Thumb static. */
4714 case C_THUMBLABEL: /* Thumb label. */
4715 case C_THUMBSTATFUNC:/* Thumb static function. */
4716 #endif
4717 case C_LABEL: /* Label. */
4718 if (src->u.syment.n_scnum == N_DEBUG)
4719 dst->symbol.flags = BSF_DEBUGGING;
4720 else
4721 dst->symbol.flags = BSF_LOCAL;
4723 /* Base the value as an index from the base of the
4724 section, if there is one. */
4725 if (dst->symbol.section)
4727 #if defined COFF_WITH_PE
4728 /* PE sets the symbol to a value relative to the
4729 start of the section. */
4730 dst->symbol.value = src->u.syment.n_value;
4731 #else
4732 dst->symbol.value = (src->u.syment.n_value
4733 - dst->symbol.section->vma);
4734 #endif
4736 else
4737 dst->symbol.value = src->u.syment.n_value;
4738 break;
4740 case C_MOS: /* Member of structure. */
4741 case C_EOS: /* End of structure. */
4742 #ifdef NOTDEF /* C_AUTOARG has the same value. */
4743 #ifdef C_GLBLREG
4744 case C_GLBLREG: /* A29k-specific storage class. */
4745 #endif
4746 #endif
4747 case C_REGPARM: /* Register parameter. */
4748 case C_REG: /* register variable. */
4749 /* C_AUTOARG conflicts with TI COFF C_UEXT. */
4750 #if !defined (TIC80COFF) && !defined (TICOFF)
4751 #ifdef C_AUTOARG
4752 case C_AUTOARG: /* 960-specific storage class. */
4753 #endif
4754 #endif
4755 case C_TPDEF: /* Type definition. */
4756 case C_ARG:
4757 case C_AUTO: /* Automatic variable. */
4758 case C_FIELD: /* Bit field. */
4759 case C_ENTAG: /* Enumeration tag. */
4760 case C_MOE: /* Member of enumeration. */
4761 case C_MOU: /* Member of union. */
4762 case C_UNTAG: /* Union tag. */
4763 dst->symbol.flags = BSF_DEBUGGING;
4764 dst->symbol.value = (src->u.syment.n_value);
4765 break;
4767 case C_FILE: /* File name. */
4768 case C_STRTAG: /* Structure tag. */
4769 #ifdef RS6000COFF_C
4770 case C_GSYM:
4771 case C_LSYM:
4772 case C_PSYM:
4773 case C_RSYM:
4774 case C_RPSYM:
4775 case C_STSYM:
4776 case C_TCSYM:
4777 case C_BCOMM:
4778 case C_ECOML:
4779 case C_ECOMM:
4780 case C_DECL:
4781 case C_ENTRY:
4782 case C_FUN:
4783 case C_ESTAT:
4784 #endif
4785 dst->symbol.flags = BSF_DEBUGGING;
4786 dst->symbol.value = (src->u.syment.n_value);
4787 break;
4789 #ifdef RS6000COFF_C
4790 case C_BINCL: /* Beginning of include file. */
4791 case C_EINCL: /* Ending of include file. */
4792 /* The value is actually a pointer into the line numbers
4793 of the file. We locate the line number entry, and
4794 set the section to the section which contains it, and
4795 the value to the index in that section. */
4797 asection *sec;
4799 dst->symbol.flags = BSF_DEBUGGING;
4800 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4801 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
4802 && ((file_ptr) (sec->line_filepos
4803 + sec->lineno_count * bfd_coff_linesz (abfd))
4804 > (file_ptr) src->u.syment.n_value))
4805 break;
4806 if (sec == NULL)
4807 dst->symbol.value = 0;
4808 else
4810 dst->symbol.section = sec;
4811 dst->symbol.value = ((src->u.syment.n_value
4812 - sec->line_filepos)
4813 / bfd_coff_linesz (abfd));
4814 src->fix_line = 1;
4817 break;
4819 case C_BSTAT:
4820 dst->symbol.flags = BSF_DEBUGGING;
4822 /* The value is actually a symbol index. Save a pointer
4823 to the symbol instead of the index. FIXME: This
4824 should use a union. */
4825 src->u.syment.n_value =
4826 (long) (native_symbols + src->u.syment.n_value);
4827 dst->symbol.value = src->u.syment.n_value;
4828 src->fix_value = 1;
4829 break;
4830 #endif
4832 case C_BLOCK: /* ".bb" or ".eb". */
4833 case C_FCN: /* ".bf" or ".ef" (or PE ".lf"). */
4834 case C_EFCN: /* Physical end of function. */
4835 #if defined COFF_WITH_PE
4836 /* PE sets the symbol to a value relative to the start
4837 of the section. */
4838 dst->symbol.value = src->u.syment.n_value;
4839 if (strcmp (dst->symbol.name, ".bf") != 0)
4841 /* PE uses funny values for .ef and .lf; don't
4842 relocate them. */
4843 dst->symbol.flags = BSF_DEBUGGING;
4845 else
4846 dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC;
4847 #else
4848 /* Base the value as an index from the base of the
4849 section. */
4850 dst->symbol.flags = BSF_LOCAL;
4851 dst->symbol.value = (src->u.syment.n_value
4852 - dst->symbol.section->vma);
4853 #endif
4854 break;
4856 case C_STATLAB: /* Static load time label. */
4857 dst->symbol.value = src->u.syment.n_value;
4858 dst->symbol.flags = BSF_GLOBAL;
4859 break;
4861 case C_NULL:
4862 /* PE DLLs sometimes have zeroed out symbols for some
4863 reason. Just ignore them without a warning. */
4864 if (src->u.syment.n_type == 0
4865 && src->u.syment.n_value == 0
4866 && src->u.syment.n_scnum == 0)
4867 break;
4868 /* Fall through. */
4869 case C_EXTDEF: /* External definition. */
4870 case C_ULABEL: /* Undefined label. */
4871 case C_USTATIC: /* Undefined static. */
4872 #ifndef COFF_WITH_PE
4873 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4874 class to represent a section symbol. */
4875 case C_LINE: /* line # reformatted as symbol table entry. */
4876 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4877 case C_ALIAS: /* Duplicate tag. */
4878 #endif
4879 /* New storage classes for TI COFF. */
4880 #if defined(TIC80COFF) || defined(TICOFF)
4881 case C_UEXT: /* Tentative external definition. */
4882 #endif
4883 case C_EXTLAB: /* External load time label. */
4884 case C_HIDDEN: /* Ext symbol in dmert public lib. */
4885 default:
4886 (*_bfd_error_handler)
4887 (_("%B: Unrecognized storage class %d for %s symbol `%s'"),
4888 abfd, src->u.syment.n_sclass,
4889 dst->symbol.section->name, dst->symbol.name);
4890 dst->symbol.flags = BSF_DEBUGGING;
4891 dst->symbol.value = (src->u.syment.n_value);
4892 break;
4895 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4897 dst->native = src;
4899 dst->symbol.udata.i = 0;
4900 dst->lineno = (alent *) NULL;
4901 this_index += (src->u.syment.n_numaux) + 1;
4902 dst++;
4903 number_of_symbols++;
4907 obj_symbols (abfd) = cached_area;
4908 obj_raw_syments (abfd) = native_symbols;
4910 bfd_get_symcount (abfd) = number_of_symbols;
4911 obj_convert (abfd) = table_ptr;
4912 /* Slurp the line tables for each section too. */
4914 asection *p;
4916 p = abfd->sections;
4917 while (p)
4919 coff_slurp_line_table (abfd, p);
4920 p = p->next;
4924 return TRUE;
4925 } /* coff_slurp_symbol_table() */
4927 /* Classify a COFF symbol. A couple of targets have globally visible
4928 symbols which are not class C_EXT, and this handles those. It also
4929 recognizes some special PE cases. */
4931 static enum coff_symbol_classification
4932 coff_classify_symbol (abfd, syment)
4933 bfd *abfd;
4934 struct internal_syment *syment;
4936 /* FIXME: This partially duplicates the switch in
4937 coff_slurp_symbol_table. */
4938 switch (syment->n_sclass)
4940 case C_EXT:
4941 case C_WEAKEXT:
4942 #ifdef I960
4943 case C_LEAFEXT:
4944 #endif
4945 #ifdef ARM
4946 case C_THUMBEXT:
4947 case C_THUMBEXTFUNC:
4948 #endif
4949 #ifdef C_SYSTEM
4950 case C_SYSTEM:
4951 #endif
4952 #ifdef COFF_WITH_PE
4953 case C_NT_WEAK:
4954 #endif
4955 if (syment->n_scnum == 0)
4957 if (syment->n_value == 0)
4958 return COFF_SYMBOL_UNDEFINED;
4959 else
4960 return COFF_SYMBOL_COMMON;
4962 return COFF_SYMBOL_GLOBAL;
4964 default:
4965 break;
4968 #ifdef COFF_WITH_PE
4969 if (syment->n_sclass == C_STAT)
4971 if (syment->n_scnum == 0)
4973 /* The Microsoft compiler sometimes generates these if a
4974 small static function is inlined every time it is used.
4975 The function is discarded, but the symbol table entry
4976 remains. */
4977 return COFF_SYMBOL_LOCAL;
4980 #ifdef STRICT_PE_FORMAT
4981 /* This is correct for Microsoft generated objects, but it
4982 breaks gas generated objects. */
4984 if (syment->n_value == 0)
4986 asection *sec;
4987 char buf[SYMNMLEN + 1];
4989 sec = coff_section_from_bfd_index (abfd, syment->n_scnum);
4990 if (sec != NULL
4991 && (strcmp (bfd_get_section_name (abfd, sec),
4992 _bfd_coff_internal_syment_name (abfd, syment, buf))
4993 == 0))
4994 return COFF_SYMBOL_PE_SECTION;
4996 #endif
4998 return COFF_SYMBOL_LOCAL;
5001 if (syment->n_sclass == C_SECTION)
5003 /* In some cases in a DLL generated by the Microsoft linker, the
5004 n_value field will contain garbage. FIXME: This should
5005 probably be handled by the swapping function instead. */
5006 syment->n_value = 0;
5007 if (syment->n_scnum == 0)
5008 return COFF_SYMBOL_UNDEFINED;
5009 return COFF_SYMBOL_PE_SECTION;
5011 #endif /* COFF_WITH_PE */
5013 /* If it is not a global symbol, we presume it is a local symbol. */
5015 if (syment->n_scnum == 0)
5017 char buf[SYMNMLEN + 1];
5019 (*_bfd_error_handler)
5020 (_("warning: %B: local symbol `%s' has no section"),
5021 abfd, _bfd_coff_internal_syment_name (abfd, syment, buf));
5024 return COFF_SYMBOL_LOCAL;
5028 SUBSUBSECTION
5029 Reading relocations
5031 Coff relocations are easily transformed into the internal BFD form
5032 (@code{arelent}).
5034 Reading a coff relocation table is done in the following stages:
5036 o Read the entire coff relocation table into memory.
5038 o Process each relocation in turn; first swap it from the
5039 external to the internal form.
5041 o Turn the symbol referenced in the relocation's symbol index
5042 into a pointer into the canonical symbol table.
5043 This table is the same as the one returned by a call to
5044 @code{bfd_canonicalize_symtab}. The back end will call that
5045 routine and save the result if a canonicalization hasn't been done.
5047 o The reloc index is turned into a pointer to a howto
5048 structure, in a back end specific way. For instance, the 386
5049 and 960 use the @code{r_type} to directly produce an index
5050 into a howto table vector; the 88k subtracts a number from the
5051 @code{r_type} field and creates an addend field.
5055 #ifndef CALC_ADDEND
5056 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
5058 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
5059 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
5060 coffsym = (obj_symbols (abfd) \
5061 + (cache_ptr->sym_ptr_ptr - symbols)); \
5062 else if (ptr) \
5063 coffsym = coff_symbol_from (abfd, ptr); \
5064 if (coffsym != (coff_symbol_type *) NULL \
5065 && coffsym->native->u.syment.n_scnum == 0) \
5066 cache_ptr->addend = 0; \
5067 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
5068 && ptr->section != (asection *) NULL) \
5069 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
5070 else \
5071 cache_ptr->addend = 0; \
5073 #endif
5075 static bfd_boolean
5076 coff_slurp_reloc_table (abfd, asect, symbols)
5077 bfd * abfd;
5078 sec_ptr asect;
5079 asymbol ** symbols;
5081 RELOC *native_relocs;
5082 arelent *reloc_cache;
5083 arelent *cache_ptr;
5084 unsigned int idx;
5085 bfd_size_type amt;
5087 if (asect->relocation)
5088 return TRUE;
5089 if (asect->reloc_count == 0)
5090 return TRUE;
5091 if (asect->flags & SEC_CONSTRUCTOR)
5092 return TRUE;
5093 if (!coff_slurp_symbol_table (abfd))
5094 return FALSE;
5095 amt = (bfd_size_type) bfd_coff_relsz (abfd) * asect->reloc_count;
5096 native_relocs = (RELOC *) buy_and_read (abfd, asect->rel_filepos, amt);
5097 amt = (bfd_size_type) asect->reloc_count * sizeof (arelent);
5098 reloc_cache = (arelent *) bfd_alloc (abfd, amt);
5100 if (reloc_cache == NULL)
5101 return FALSE;
5103 for (idx = 0; idx < asect->reloc_count; idx++)
5105 struct internal_reloc dst;
5106 struct external_reloc *src;
5107 #ifndef RELOC_PROCESSING
5108 asymbol *ptr;
5109 #endif
5111 cache_ptr = reloc_cache + idx;
5112 src = native_relocs + idx;
5114 coff_swap_reloc_in (abfd, src, &dst);
5116 #ifdef RELOC_PROCESSING
5117 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
5118 #else
5119 cache_ptr->address = dst.r_vaddr;
5121 if (dst.r_symndx != -1)
5123 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
5125 (*_bfd_error_handler)
5126 (_("%B: warning: illegal symbol index %ld in relocs"),
5127 abfd, dst.r_symndx);
5128 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5129 ptr = NULL;
5131 else
5133 cache_ptr->sym_ptr_ptr = (symbols
5134 + obj_convert (abfd)[dst.r_symndx]);
5135 ptr = *(cache_ptr->sym_ptr_ptr);
5138 else
5140 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5141 ptr = NULL;
5144 /* The symbols definitions that we have read in have been
5145 relocated as if their sections started at 0. But the offsets
5146 refering to the symbols in the raw data have not been
5147 modified, so we have to have a negative addend to compensate.
5149 Note that symbols which used to be common must be left alone. */
5151 /* Calculate any reloc addend by looking at the symbol. */
5152 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
5154 cache_ptr->address -= asect->vma;
5155 /* !! cache_ptr->section = (asection *) NULL;*/
5157 /* Fill in the cache_ptr->howto field from dst.r_type. */
5158 RTYPE2HOWTO (cache_ptr, &dst);
5159 #endif /* RELOC_PROCESSING */
5161 if (cache_ptr->howto == NULL)
5163 (*_bfd_error_handler)
5164 (_("%B: illegal relocation type %d at address 0x%lx"),
5165 abfd, dst.r_type, (long) dst.r_vaddr);
5166 bfd_set_error (bfd_error_bad_value);
5167 return FALSE;
5171 asect->relocation = reloc_cache;
5172 return TRUE;
5175 #ifndef coff_rtype_to_howto
5176 #ifdef RTYPE2HOWTO
5178 /* Get the howto structure for a reloc. This is only used if the file
5179 including this one defines coff_relocate_section to be
5180 _bfd_coff_generic_relocate_section, so it is OK if it does not
5181 always work. It is the responsibility of the including file to
5182 make sure it is reasonable if it is needed. */
5184 static reloc_howto_type *coff_rtype_to_howto
5185 PARAMS ((bfd *, asection *, struct internal_reloc *,
5186 struct coff_link_hash_entry *, struct internal_syment *,
5187 bfd_vma *));
5189 static reloc_howto_type *
5190 coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
5191 bfd *abfd ATTRIBUTE_UNUSED;
5192 asection *sec ATTRIBUTE_UNUSED;
5193 struct internal_reloc *rel;
5194 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED;
5195 struct internal_syment *sym ATTRIBUTE_UNUSED;
5196 bfd_vma *addendp ATTRIBUTE_UNUSED;
5198 arelent genrel;
5200 RTYPE2HOWTO (&genrel, rel);
5201 return genrel.howto;
5204 #else /* ! defined (RTYPE2HOWTO) */
5206 #define coff_rtype_to_howto NULL
5208 #endif /* ! defined (RTYPE2HOWTO) */
5209 #endif /* ! defined (coff_rtype_to_howto) */
5211 /* This is stupid. This function should be a boolean predicate. */
5212 static long
5213 coff_canonicalize_reloc (abfd, section, relptr, symbols)
5214 bfd * abfd;
5215 sec_ptr section;
5216 arelent ** relptr;
5217 asymbol ** symbols;
5219 arelent *tblptr = section->relocation;
5220 unsigned int count = 0;
5222 if (section->flags & SEC_CONSTRUCTOR)
5224 /* This section has relocs made up by us, they are not in the
5225 file, so take them out of their chain and place them into
5226 the data area provided. */
5227 arelent_chain *chain = section->constructor_chain;
5229 for (count = 0; count < section->reloc_count; count++)
5231 *relptr++ = &chain->relent;
5232 chain = chain->next;
5235 else
5237 if (! coff_slurp_reloc_table (abfd, section, symbols))
5238 return -1;
5240 tblptr = section->relocation;
5242 for (; count++ < section->reloc_count;)
5243 *relptr++ = tblptr++;
5245 *relptr = 0;
5246 return section->reloc_count;
5249 #ifdef GNU960
5250 file_ptr
5251 coff_sym_filepos (abfd)
5252 bfd *abfd;
5254 return obj_sym_filepos (abfd);
5256 #endif
5258 #ifndef coff_reloc16_estimate
5259 #define coff_reloc16_estimate dummy_reloc16_estimate
5261 static int dummy_reloc16_estimate
5262 PARAMS ((bfd *, asection *, arelent *, unsigned int,
5263 struct bfd_link_info *));
5265 static int
5266 dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
5267 bfd *abfd ATTRIBUTE_UNUSED;
5268 asection *input_section ATTRIBUTE_UNUSED;
5269 arelent *reloc ATTRIBUTE_UNUSED;
5270 unsigned int shrink ATTRIBUTE_UNUSED;
5271 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
5273 abort ();
5274 return 0;
5277 #endif
5279 #ifndef coff_reloc16_extra_cases
5281 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
5283 /* This works even if abort is not declared in any header file. */
5285 static void dummy_reloc16_extra_cases
5286 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
5287 bfd_byte *, unsigned int *, unsigned int *));
5289 static void
5290 dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
5291 dst_ptr)
5292 bfd *abfd ATTRIBUTE_UNUSED;
5293 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
5294 struct bfd_link_order *link_order ATTRIBUTE_UNUSED;
5295 arelent *reloc ATTRIBUTE_UNUSED;
5296 bfd_byte *data ATTRIBUTE_UNUSED;
5297 unsigned int *src_ptr ATTRIBUTE_UNUSED;
5298 unsigned int *dst_ptr ATTRIBUTE_UNUSED;
5300 abort ();
5302 #endif
5304 #ifndef coff_bfd_link_hash_table_free
5305 #define coff_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
5306 #endif
5308 /* If coff_relocate_section is defined, we can use the optimized COFF
5309 backend linker. Otherwise we must continue to use the old linker. */
5310 #ifdef coff_relocate_section
5311 #ifndef coff_bfd_link_hash_table_create
5312 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
5313 #endif
5314 #ifndef coff_bfd_link_add_symbols
5315 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
5316 #endif
5317 #ifndef coff_bfd_final_link
5318 #define coff_bfd_final_link _bfd_coff_final_link
5319 #endif
5320 #else /* ! defined (coff_relocate_section) */
5321 #define coff_relocate_section NULL
5322 #ifndef coff_bfd_link_hash_table_create
5323 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
5324 #endif
5325 #ifndef coff_bfd_link_add_symbols
5326 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
5327 #endif
5328 #define coff_bfd_final_link _bfd_generic_final_link
5329 #endif /* ! defined (coff_relocate_section) */
5331 #define coff_bfd_link_just_syms _bfd_generic_link_just_syms
5332 #define coff_bfd_link_split_section _bfd_generic_link_split_section
5334 #ifndef coff_start_final_link
5335 #define coff_start_final_link NULL
5336 #endif
5338 #ifndef coff_adjust_symndx
5339 #define coff_adjust_symndx NULL
5340 #endif
5342 #ifndef coff_link_add_one_symbol
5343 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5344 #endif
5346 #ifndef coff_link_output_has_begun
5348 static bfd_boolean coff_link_output_has_begun
5349 PARAMS ((bfd *, struct coff_final_link_info *));
5351 static bfd_boolean
5352 coff_link_output_has_begun (abfd, info)
5353 bfd * abfd;
5354 struct coff_final_link_info * info ATTRIBUTE_UNUSED;
5356 return abfd->output_has_begun;
5358 #endif
5360 #ifndef coff_final_link_postscript
5362 static bfd_boolean coff_final_link_postscript
5363 PARAMS ((bfd *, struct coff_final_link_info *));
5365 static bfd_boolean
5366 coff_final_link_postscript (abfd, pfinfo)
5367 bfd * abfd ATTRIBUTE_UNUSED;
5368 struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED;
5370 return TRUE;
5372 #endif
5374 #ifndef coff_SWAP_aux_in
5375 #define coff_SWAP_aux_in coff_swap_aux_in
5376 #endif
5377 #ifndef coff_SWAP_sym_in
5378 #define coff_SWAP_sym_in coff_swap_sym_in
5379 #endif
5380 #ifndef coff_SWAP_lineno_in
5381 #define coff_SWAP_lineno_in coff_swap_lineno_in
5382 #endif
5383 #ifndef coff_SWAP_aux_out
5384 #define coff_SWAP_aux_out coff_swap_aux_out
5385 #endif
5386 #ifndef coff_SWAP_sym_out
5387 #define coff_SWAP_sym_out coff_swap_sym_out
5388 #endif
5389 #ifndef coff_SWAP_lineno_out
5390 #define coff_SWAP_lineno_out coff_swap_lineno_out
5391 #endif
5392 #ifndef coff_SWAP_reloc_out
5393 #define coff_SWAP_reloc_out coff_swap_reloc_out
5394 #endif
5395 #ifndef coff_SWAP_filehdr_out
5396 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5397 #endif
5398 #ifndef coff_SWAP_aouthdr_out
5399 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5400 #endif
5401 #ifndef coff_SWAP_scnhdr_out
5402 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5403 #endif
5404 #ifndef coff_SWAP_reloc_in
5405 #define coff_SWAP_reloc_in coff_swap_reloc_in
5406 #endif
5407 #ifndef coff_SWAP_filehdr_in
5408 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5409 #endif
5410 #ifndef coff_SWAP_aouthdr_in
5411 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5412 #endif
5413 #ifndef coff_SWAP_scnhdr_in
5414 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5415 #endif
5417 static const bfd_coff_backend_data bfd_coff_std_swap_table =
5419 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5420 coff_SWAP_aux_out, coff_SWAP_sym_out,
5421 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5422 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5423 coff_SWAP_scnhdr_out,
5424 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5425 #ifdef COFF_LONG_FILENAMES
5426 TRUE,
5427 #else
5428 FALSE,
5429 #endif
5430 #ifdef COFF_LONG_SECTION_NAMES
5431 TRUE,
5432 #else
5433 FALSE,
5434 #endif
5435 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5436 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5437 TRUE,
5438 #else
5439 FALSE,
5440 #endif
5441 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5443 #else
5445 #endif
5446 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5447 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5448 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5449 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5450 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5451 coff_classify_symbol, coff_compute_section_file_positions,
5452 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5453 coff_adjust_symndx, coff_link_add_one_symbol,
5454 coff_link_output_has_begun, coff_final_link_postscript
5457 #ifdef TICOFF
5458 /* COFF0 differs in file/section header size and relocation entry size. */
5459 static const bfd_coff_backend_data ticoff0_swap_table =
5461 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5462 coff_SWAP_aux_out, coff_SWAP_sym_out,
5463 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5464 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5465 coff_SWAP_scnhdr_out,
5466 FILHSZ_V0, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ_V0, LINESZ, FILNMLEN,
5467 #ifdef COFF_LONG_FILENAMES
5468 TRUE,
5469 #else
5470 FALSE,
5471 #endif
5472 #ifdef COFF_LONG_SECTION_NAMES
5473 TRUE,
5474 #else
5475 FALSE,
5476 #endif
5477 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5478 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5479 TRUE,
5480 #else
5481 FALSE,
5482 #endif
5483 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5485 #else
5487 #endif
5488 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5489 coff_SWAP_reloc_in, ticoff0_bad_format_hook, coff_set_arch_mach_hook,
5490 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5491 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5492 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5493 coff_classify_symbol, coff_compute_section_file_positions,
5494 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5495 coff_adjust_symndx, coff_link_add_one_symbol,
5496 coff_link_output_has_begun, coff_final_link_postscript
5498 #endif
5500 #ifdef TICOFF
5501 /* COFF1 differs in section header size. */
5502 static const bfd_coff_backend_data ticoff1_swap_table =
5504 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5505 coff_SWAP_aux_out, coff_SWAP_sym_out,
5506 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5507 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5508 coff_SWAP_scnhdr_out,
5509 FILHSZ, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5510 #ifdef COFF_LONG_FILENAMES
5511 TRUE,
5512 #else
5513 FALSE,
5514 #endif
5515 #ifdef COFF_LONG_SECTION_NAMES
5516 TRUE,
5517 #else
5518 FALSE,
5519 #endif
5520 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5521 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5522 TRUE,
5523 #else
5524 FALSE,
5525 #endif
5526 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5528 #else
5530 #endif
5531 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5532 coff_SWAP_reloc_in, ticoff1_bad_format_hook, coff_set_arch_mach_hook,
5533 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5534 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5535 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5536 coff_classify_symbol, coff_compute_section_file_positions,
5537 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5538 coff_adjust_symndx, coff_link_add_one_symbol,
5539 coff_link_output_has_begun, coff_final_link_postscript
5541 #endif
5543 #ifndef coff_close_and_cleanup
5544 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5545 #endif
5547 #ifndef coff_bfd_free_cached_info
5548 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5549 #endif
5551 #ifndef coff_get_section_contents
5552 #define coff_get_section_contents _bfd_generic_get_section_contents
5553 #endif
5555 #ifndef coff_bfd_copy_private_symbol_data
5556 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5557 #endif
5559 #ifndef coff_bfd_copy_private_header_data
5560 #define coff_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
5561 #endif
5563 #ifndef coff_bfd_copy_private_section_data
5564 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5565 #endif
5567 #ifndef coff_bfd_copy_private_bfd_data
5568 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5569 #endif
5571 #ifndef coff_bfd_merge_private_bfd_data
5572 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5573 #endif
5575 #ifndef coff_bfd_set_private_flags
5576 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5577 #endif
5579 #ifndef coff_bfd_print_private_bfd_data
5580 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5581 #endif
5583 #ifndef coff_bfd_is_local_label_name
5584 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5585 #endif
5587 #ifndef coff_bfd_is_target_special_symbol
5588 #define coff_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
5589 #endif
5591 #ifndef coff_read_minisymbols
5592 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5593 #endif
5595 #ifndef coff_minisymbol_to_symbol
5596 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5597 #endif
5599 /* The reloc lookup routine must be supplied by each individual COFF
5600 backend. */
5601 #ifndef coff_bfd_reloc_type_lookup
5602 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5603 #endif
5605 #ifndef coff_bfd_get_relocated_section_contents
5606 #define coff_bfd_get_relocated_section_contents \
5607 bfd_generic_get_relocated_section_contents
5608 #endif
5610 #ifndef coff_bfd_relax_section
5611 #define coff_bfd_relax_section bfd_generic_relax_section
5612 #endif
5614 #ifndef coff_bfd_gc_sections
5615 #define coff_bfd_gc_sections bfd_generic_gc_sections
5616 #endif
5618 #ifndef coff_bfd_merge_sections
5619 #define coff_bfd_merge_sections bfd_generic_merge_sections
5620 #endif
5622 #ifndef coff_bfd_is_group_section
5623 #define coff_bfd_is_group_section bfd_generic_is_group_section
5624 #endif
5626 #ifndef coff_bfd_discard_group
5627 #define coff_bfd_discard_group bfd_generic_discard_group
5628 #endif
5630 #ifndef coff_section_already_linked
5631 #define coff_section_already_linked \
5632 _bfd_generic_section_already_linked
5633 #endif
5635 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5636 const bfd_target VAR = \
5638 NAME , \
5639 bfd_target_coff_flavour, \
5640 BFD_ENDIAN_BIG, /* data byte order is big */ \
5641 BFD_ENDIAN_BIG, /* header byte order is big */ \
5642 /* object flags */ \
5643 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5644 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5645 /* section flags */ \
5646 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5647 UNDER, /* leading symbol underscore */ \
5648 '/', /* ar_pad_char */ \
5649 15, /* ar_max_namelen */ \
5651 /* Data conversion functions. */ \
5652 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5653 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5654 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5656 /* Header conversion functions. */ \
5657 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5658 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5659 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5661 /* bfd_check_format */ \
5662 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5663 _bfd_dummy_target }, \
5664 /* bfd_set_format */ \
5665 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5666 /* bfd_write_contents */ \
5667 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5668 bfd_false }, \
5670 BFD_JUMP_TABLE_GENERIC (coff), \
5671 BFD_JUMP_TABLE_COPY (coff), \
5672 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5673 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5674 BFD_JUMP_TABLE_SYMBOLS (coff), \
5675 BFD_JUMP_TABLE_RELOCS (coff), \
5676 BFD_JUMP_TABLE_WRITE (coff), \
5677 BFD_JUMP_TABLE_LINK (coff), \
5678 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5680 ALTERNATIVE, \
5682 SWAP_TABLE \
5685 #define CREATE_BIGHDR_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5686 const bfd_target VAR = \
5688 NAME , \
5689 bfd_target_coff_flavour, \
5690 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5691 BFD_ENDIAN_BIG, /* header byte order is big */ \
5692 /* object flags */ \
5693 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5694 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5695 /* section flags */ \
5696 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5697 UNDER, /* leading symbol underscore */ \
5698 '/', /* ar_pad_char */ \
5699 15, /* ar_max_namelen */ \
5701 /* Data conversion functions. */ \
5702 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5703 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5704 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5706 /* Header conversion functions. */ \
5707 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5708 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5709 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5711 /* bfd_check_format */ \
5712 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5713 _bfd_dummy_target }, \
5714 /* bfd_set_format */ \
5715 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5716 /* bfd_write_contents */ \
5717 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5718 bfd_false }, \
5720 BFD_JUMP_TABLE_GENERIC (coff), \
5721 BFD_JUMP_TABLE_COPY (coff), \
5722 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5723 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5724 BFD_JUMP_TABLE_SYMBOLS (coff), \
5725 BFD_JUMP_TABLE_RELOCS (coff), \
5726 BFD_JUMP_TABLE_WRITE (coff), \
5727 BFD_JUMP_TABLE_LINK (coff), \
5728 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5730 ALTERNATIVE, \
5732 SWAP_TABLE \
5735 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5736 const bfd_target VAR = \
5738 NAME , \
5739 bfd_target_coff_flavour, \
5740 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5741 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5742 /* object flags */ \
5743 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5744 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5745 /* section flags */ \
5746 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5747 UNDER, /* leading symbol underscore */ \
5748 '/', /* ar_pad_char */ \
5749 15, /* ar_max_namelen */ \
5751 /* Data conversion functions. */ \
5752 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5753 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5754 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5755 /* Header conversion functions. */ \
5756 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5757 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5758 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5759 /* bfd_check_format */ \
5760 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5761 _bfd_dummy_target }, \
5762 /* bfd_set_format */ \
5763 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5764 /* bfd_write_contents */ \
5765 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5766 bfd_false }, \
5768 BFD_JUMP_TABLE_GENERIC (coff), \
5769 BFD_JUMP_TABLE_COPY (coff), \
5770 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5771 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5772 BFD_JUMP_TABLE_SYMBOLS (coff), \
5773 BFD_JUMP_TABLE_RELOCS (coff), \
5774 BFD_JUMP_TABLE_WRITE (coff), \
5775 BFD_JUMP_TABLE_LINK (coff), \
5776 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5778 ALTERNATIVE, \
5780 SWAP_TABLE \