* elf64-ppc.c (STD_R0_0R1, STD_R0_0R12, LD_R0_0R1, LD_R0_0R12,
[binutils.git] / bfd / coffcode.h
blobb96e5f06e30aaf539df1899ce840e0aaca42e4b7
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 $) as the comdat symbol. */
819 /* All 3 branches use this. */
820 symname = _bfd_coff_internal_syment_name (abfd, &isym, buf);
822 if (symname == NULL)
823 abort ();
825 switch (seen_state)
827 case 0:
829 /* The first time we've seen the symbol. */
830 union internal_auxent aux;
832 seen_state = 1;
834 /* If it isn't the stuff we're expecting, die;
835 The MS documentation is vague, but it
836 appears that the second entry serves BOTH
837 as the comdat symbol and the defining
838 symbol record (either C_STAT or C_EXT,
839 possibly with an aux entry with debug
840 information if it's a function.) It
841 appears the only way to find the second one
842 is to count. (On Intel, they appear to be
843 adjacent, but on Alpha, they have been
844 found separated.)
846 Here, we think we've found the first one,
847 but there's some checking we can do to be
848 sure. */
850 if (! (isym.n_sclass == C_STAT
851 && isym.n_type == T_NULL
852 && isym.n_value == 0))
853 abort ();
855 /* FIXME LATER: MSVC generates section names
856 like .text for comdats. Gas generates
857 names like .text$foo__Fv (in the case of a
858 function). See comment above for more. */
860 if (strcmp (name, symname) != 0)
861 abort ();
863 /* This is the section symbol. */
864 bfd_coff_swap_aux_in (abfd, (PTR) (esym + bfd_coff_symesz (abfd)),
865 isym.n_type, isym.n_sclass,
866 0, isym.n_numaux, (PTR) &aux);
868 target_name = strchr (name, '$');
869 if (target_name != NULL)
871 /* Gas mode. */
872 seen_state = 2;
873 /* Skip the `$'. */
874 target_name += 1;
877 /* FIXME: Microsoft uses NODUPLICATES and
878 ASSOCIATIVE, but gnu uses ANY and
879 SAME_SIZE. Unfortunately, gnu doesn't do
880 the comdat symbols right. So, until we can
881 fix it to do the right thing, we are
882 temporarily disabling comdats for the MS
883 types (they're used in DLLs and C++, but we
884 don't support *their* C++ libraries anyway
885 - DJ. */
887 /* Cygwin does not follow the MS style, and
888 uses ANY and SAME_SIZE where NODUPLICATES
889 and ASSOCIATIVE should be used. For
890 Interix, we just do the right thing up
891 front. */
893 switch (aux.x_scn.x_comdat)
895 case IMAGE_COMDAT_SELECT_NODUPLICATES:
896 #ifdef STRICT_PE_FORMAT
897 sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
898 #else
899 sec_flags &= ~SEC_LINK_ONCE;
900 #endif
901 break;
903 case IMAGE_COMDAT_SELECT_ANY:
904 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
905 break;
907 case IMAGE_COMDAT_SELECT_SAME_SIZE:
908 sec_flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
909 break;
911 case IMAGE_COMDAT_SELECT_EXACT_MATCH:
912 /* Not yet fully implemented ??? */
913 sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
914 break;
916 /* debug$S gets this case; other
917 implications ??? */
919 /* There may be no symbol... we'll search
920 the whole table... Is this the right
921 place to play this game? Or should we do
922 it when reading it in. */
923 case IMAGE_COMDAT_SELECT_ASSOCIATIVE:
924 #ifdef STRICT_PE_FORMAT
925 /* FIXME: This is not currently implemented. */
926 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
927 #else
928 sec_flags &= ~SEC_LINK_ONCE;
929 #endif
930 break;
932 default: /* 0 means "no symbol" */
933 /* debug$F gets this case; other
934 implications ??? */
935 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
936 break;
939 break;
941 case 2:
942 /* Gas mode: the first matching on partial name. */
944 #ifndef TARGET_UNDERSCORE
945 #define TARGET_UNDERSCORE 0
946 #endif
947 /* Is this the name we're looking for ? */
948 if (strcmp (target_name,
949 symname + (TARGET_UNDERSCORE ? 1 : 0)) != 0)
951 /* Not the name we're looking for */
952 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
953 continue;
955 /* Fall through. */
956 case 1:
957 /* MSVC mode: the lexically second symbol (or
958 drop through from the above). */
960 char *newname;
961 bfd_size_type amt;
963 /* This must the second symbol with the
964 section #. It is the actual symbol name.
965 Intel puts the two adjacent, but Alpha (at
966 least) spreads them out. */
968 amt = sizeof (struct coff_comdat_info);
969 coff_section_data (abfd, section)->comdat
970 = bfd_alloc (abfd, amt);
971 if (coff_section_data (abfd, section)->comdat == NULL)
972 abort ();
974 coff_section_data (abfd, section)->comdat->symbol =
975 (esym - esymstart) / bfd_coff_symesz (abfd);
977 amt = strlen (symname) + 1;
978 newname = bfd_alloc (abfd, amt);
979 if (newname == NULL)
980 abort ();
982 strcpy (newname, symname);
983 coff_section_data (abfd, section)->comdat->name
984 = newname;
987 goto breakloop;
991 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
994 breakloop:
995 return sec_flags;
999 /* The PE version; see above for the general comments.
1001 Since to set the SEC_LINK_ONCE and associated flags, we have to
1002 look at the symbol table anyway, we return the symbol table index
1003 of the symbol being used as the COMDAT symbol. This is admittedly
1004 ugly, but there's really nowhere else that we have access to the
1005 required information. FIXME: Is the COMDAT symbol index used for
1006 any purpose other than objdump? */
1008 static bfd_boolean
1009 styp_to_sec_flags (abfd, hdr, name, section, flags_ptr)
1010 bfd *abfd;
1011 PTR hdr;
1012 const char *name;
1013 asection *section;
1014 flagword *flags_ptr;
1016 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
1017 long styp_flags = internal_s->s_flags;
1018 flagword sec_flags;
1019 bfd_boolean result = TRUE;
1021 /* Assume read only unless IMAGE_SCN_MEM_WRITE is specified. */
1022 sec_flags = SEC_READONLY;
1024 /* Process each flag bit in styp_flags in turn. */
1025 while (styp_flags)
1027 long flag = styp_flags & - styp_flags;
1028 char * unhandled = NULL;
1030 styp_flags &= ~ flag;
1032 /* We infer from the distinct read/write/execute bits the settings
1033 of some of the bfd flags; the actual values, should we need them,
1034 are also in pei_section_data (abfd, section)->pe_flags. */
1036 switch (flag)
1038 case STYP_DSECT:
1039 unhandled = "STYP_DSECT";
1040 break;
1041 case STYP_GROUP:
1042 unhandled = "STYP_GROUP";
1043 break;
1044 case STYP_COPY:
1045 unhandled = "STYP_COPY";
1046 break;
1047 case STYP_OVER:
1048 unhandled = "STYP_OVER";
1049 break;
1050 #ifdef SEC_NEVER_LOAD
1051 case STYP_NOLOAD:
1052 sec_flags |= SEC_NEVER_LOAD;
1053 break;
1054 #endif
1055 case IMAGE_SCN_MEM_READ:
1056 /* Ignored, assume it always to be true. */
1057 break;
1058 case IMAGE_SCN_TYPE_NO_PAD:
1059 /* Skip. */
1060 break;
1061 case IMAGE_SCN_LNK_OTHER:
1062 unhandled = "IMAGE_SCN_LNK_OTHER";
1063 break;
1064 case IMAGE_SCN_MEM_NOT_CACHED:
1065 unhandled = "IMAGE_SCN_MEM_NOT_CACHED";
1066 break;
1067 case IMAGE_SCN_MEM_NOT_PAGED:
1068 #if 0
1069 unhandled = "IMAGE_SCN_MEM_NOT_PAGED";
1070 #else
1071 /* Generate a warning message rather using the 'unhandled'
1072 variable as this will allow some .sys files generate by
1073 other toolchains to be processed. See bugzilla issue 196. */
1074 _bfd_error_handler (_("%B: Warning: Ignoring section flag IMAGE_SCN_MEM_NOT_PAGED in section %s"),
1075 abfd, name);
1076 #endif
1077 break;
1078 case IMAGE_SCN_MEM_EXECUTE:
1079 sec_flags |= SEC_CODE;
1080 break;
1081 case IMAGE_SCN_MEM_WRITE:
1082 sec_flags &= ~ SEC_READONLY;
1083 break;
1084 case IMAGE_SCN_MEM_DISCARDABLE:
1085 /* The MS PE spec sets the DISCARDABLE flag on .reloc sections
1086 but we do not want them to be labelled as debug section, since
1087 then strip would remove them. */
1088 if (strncmp (name, ".reloc", sizeof ".reloc" - 1) != 0)
1089 sec_flags |= SEC_DEBUGGING;
1090 break;
1091 case IMAGE_SCN_MEM_SHARED:
1092 sec_flags |= SEC_SHARED;
1093 break;
1094 case IMAGE_SCN_LNK_REMOVE:
1095 sec_flags |= SEC_EXCLUDE;
1096 break;
1097 case IMAGE_SCN_CNT_CODE:
1098 sec_flags |= SEC_CODE | SEC_ALLOC | SEC_LOAD;
1099 break;
1100 case IMAGE_SCN_CNT_INITIALIZED_DATA:
1101 sec_flags |= SEC_DATA | SEC_ALLOC | SEC_LOAD;
1102 break;
1103 case IMAGE_SCN_CNT_UNINITIALIZED_DATA:
1104 sec_flags |= SEC_ALLOC;
1105 break;
1106 case IMAGE_SCN_LNK_INFO:
1107 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
1108 defined. coff_compute_section_file_positions uses
1109 COFF_PAGE_SIZE to ensure that the low order bits of the
1110 section VMA and the file offset match. If we don't know
1111 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
1112 and demand page loading of the file will fail. */
1113 #ifdef COFF_PAGE_SIZE
1114 sec_flags |= SEC_DEBUGGING;
1115 #endif
1116 break;
1117 case IMAGE_SCN_LNK_COMDAT:
1118 /* COMDAT gets very special treatment. */
1119 sec_flags = handle_COMDAT (abfd, sec_flags, hdr, name, section);
1120 break;
1121 default:
1122 /* Silently ignore for now. */
1123 break;
1126 /* If the section flag was not handled, report it here. */
1127 if (unhandled != NULL)
1129 (*_bfd_error_handler)
1130 (_("%B (%s): Section flag %s (0x%x) ignored"),
1131 abfd, name, unhandled, flag);
1132 result = FALSE;
1136 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
1137 /* As a GNU extension, if the name begins with .gnu.linkonce, we
1138 only link a single copy of the section. This is used to support
1139 g++. g++ will emit each template expansion in its own section.
1140 The symbols will be defined as weak, so that multiple definitions
1141 are permitted. The GNU linker extension is to actually discard
1142 all but one of the sections. */
1143 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
1144 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1145 #endif
1147 if (flags_ptr)
1148 * flags_ptr = sec_flags;
1150 return result;
1153 #endif /* COFF_WITH_PE */
1155 #define get_index(symbol) ((symbol)->udata.i)
1158 INTERNAL_DEFINITION
1159 bfd_coff_backend_data
1161 CODE_FRAGMENT
1163 .{* COFF symbol classifications. *}
1165 .enum coff_symbol_classification
1167 . {* Global symbol. *}
1168 . COFF_SYMBOL_GLOBAL,
1169 . {* Common symbol. *}
1170 . COFF_SYMBOL_COMMON,
1171 . {* Undefined symbol. *}
1172 . COFF_SYMBOL_UNDEFINED,
1173 . {* Local symbol. *}
1174 . COFF_SYMBOL_LOCAL,
1175 . {* PE section symbol. *}
1176 . COFF_SYMBOL_PE_SECTION
1179 Special entry points for gdb to swap in coff symbol table parts:
1180 .typedef struct
1182 . void (*_bfd_coff_swap_aux_in)
1183 . PARAMS ((bfd *, PTR, int, int, int, int, PTR));
1185 . void (*_bfd_coff_swap_sym_in)
1186 . PARAMS ((bfd *, PTR, PTR));
1188 . void (*_bfd_coff_swap_lineno_in)
1189 . PARAMS ((bfd *, PTR, PTR));
1191 . unsigned int (*_bfd_coff_swap_aux_out)
1192 . PARAMS ((bfd *, PTR, int, int, int, int, PTR));
1194 . unsigned int (*_bfd_coff_swap_sym_out)
1195 . PARAMS ((bfd *, PTR, PTR));
1197 . unsigned int (*_bfd_coff_swap_lineno_out)
1198 . PARAMS ((bfd *, PTR, PTR));
1200 . unsigned int (*_bfd_coff_swap_reloc_out)
1201 . PARAMS ((bfd *, PTR, PTR));
1203 . unsigned int (*_bfd_coff_swap_filehdr_out)
1204 . PARAMS ((bfd *, PTR, PTR));
1206 . unsigned int (*_bfd_coff_swap_aouthdr_out)
1207 . PARAMS ((bfd *, PTR, PTR));
1209 . unsigned int (*_bfd_coff_swap_scnhdr_out)
1210 . PARAMS ((bfd *, PTR, PTR));
1212 . unsigned int _bfd_filhsz;
1213 . unsigned int _bfd_aoutsz;
1214 . unsigned int _bfd_scnhsz;
1215 . unsigned int _bfd_symesz;
1216 . unsigned int _bfd_auxesz;
1217 . unsigned int _bfd_relsz;
1218 . unsigned int _bfd_linesz;
1219 . unsigned int _bfd_filnmlen;
1220 . bfd_boolean _bfd_coff_long_filenames;
1221 . bfd_boolean _bfd_coff_long_section_names;
1222 . unsigned int _bfd_coff_default_section_alignment_power;
1223 . bfd_boolean _bfd_coff_force_symnames_in_strings;
1224 . unsigned int _bfd_coff_debug_string_prefix_length;
1226 . void (*_bfd_coff_swap_filehdr_in)
1227 . PARAMS ((bfd *, PTR, PTR));
1229 . void (*_bfd_coff_swap_aouthdr_in)
1230 . PARAMS ((bfd *, PTR, PTR));
1232 . void (*_bfd_coff_swap_scnhdr_in)
1233 . PARAMS ((bfd *, PTR, PTR));
1235 . void (*_bfd_coff_swap_reloc_in)
1236 . PARAMS ((bfd *abfd, PTR, PTR));
1238 . bfd_boolean (*_bfd_coff_bad_format_hook)
1239 . PARAMS ((bfd *, PTR));
1241 . bfd_boolean (*_bfd_coff_set_arch_mach_hook)
1242 . PARAMS ((bfd *, PTR));
1244 . PTR (*_bfd_coff_mkobject_hook)
1245 . PARAMS ((bfd *, PTR, PTR));
1247 . bfd_boolean (*_bfd_styp_to_sec_flags_hook)
1248 . PARAMS ((bfd *, PTR, const char *, asection *, flagword *));
1250 . void (*_bfd_set_alignment_hook)
1251 . PARAMS ((bfd *, asection *, PTR));
1253 . bfd_boolean (*_bfd_coff_slurp_symbol_table)
1254 . PARAMS ((bfd *));
1256 . bfd_boolean (*_bfd_coff_symname_in_debug)
1257 . PARAMS ((bfd *, struct internal_syment *));
1259 . bfd_boolean (*_bfd_coff_pointerize_aux_hook)
1260 . PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
1261 . unsigned int, combined_entry_type *));
1263 . bfd_boolean (*_bfd_coff_print_aux)
1264 . PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1265 . combined_entry_type *, unsigned int));
1267 . void (*_bfd_coff_reloc16_extra_cases)
1268 . PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
1269 . bfd_byte *, unsigned int *, unsigned int *));
1271 . int (*_bfd_coff_reloc16_estimate)
1272 . PARAMS ((bfd *, asection *, arelent *, unsigned int,
1273 . struct bfd_link_info *));
1275 . enum coff_symbol_classification (*_bfd_coff_classify_symbol)
1276 . PARAMS ((bfd *, struct internal_syment *));
1278 . bfd_boolean (*_bfd_coff_compute_section_file_positions)
1279 . PARAMS ((bfd *));
1281 . bfd_boolean (*_bfd_coff_start_final_link)
1282 . PARAMS ((bfd *, struct bfd_link_info *));
1284 . bfd_boolean (*_bfd_coff_relocate_section)
1285 . PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
1286 . struct internal_reloc *, struct internal_syment *, asection **));
1288 . reloc_howto_type *(*_bfd_coff_rtype_to_howto)
1289 . PARAMS ((bfd *, asection *, struct internal_reloc *,
1290 . struct coff_link_hash_entry *, struct internal_syment *,
1291 . bfd_vma *));
1293 . bfd_boolean (*_bfd_coff_adjust_symndx)
1294 . PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
1295 . struct internal_reloc *, bfd_boolean *));
1297 . bfd_boolean (*_bfd_coff_link_add_one_symbol)
1298 . PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword,
1299 . asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
1300 . struct bfd_link_hash_entry **));
1302 . bfd_boolean (*_bfd_coff_link_output_has_begun)
1303 . PARAMS ((bfd *, struct coff_final_link_info *));
1305 . bfd_boolean (*_bfd_coff_final_link_postscript)
1306 . PARAMS ((bfd *, struct coff_final_link_info *));
1308 .} bfd_coff_backend_data;
1310 .#define coff_backend_info(abfd) \
1311 . ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1313 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1314 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1316 .#define bfd_coff_swap_sym_in(a,e,i) \
1317 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1319 .#define bfd_coff_swap_lineno_in(a,e,i) \
1320 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1322 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1323 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1325 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1326 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1328 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1329 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1331 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1332 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1334 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1335 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1337 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1338 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1340 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1341 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1343 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1344 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1345 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1346 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1347 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1348 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
1349 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1350 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1351 .#define bfd_coff_long_filenames(abfd) \
1352 . (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1353 .#define bfd_coff_long_section_names(abfd) \
1354 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1355 .#define bfd_coff_default_section_alignment_power(abfd) \
1356 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1357 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1358 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1360 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1361 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1363 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1364 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1366 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1367 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1369 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1370 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1372 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1373 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1374 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1375 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
1376 . (abfd, filehdr, aouthdr))
1378 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
1379 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1380 . (abfd, scnhdr, name, section, flags_ptr))
1382 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1383 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1385 .#define bfd_coff_slurp_symbol_table(abfd)\
1386 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1388 .#define bfd_coff_symname_in_debug(abfd, sym)\
1389 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1391 .#define bfd_coff_force_symnames_in_strings(abfd)\
1392 . (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
1394 .#define bfd_coff_debug_string_prefix_length(abfd)\
1395 . (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
1397 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1398 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1399 . (abfd, file, base, symbol, aux, indaux))
1401 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
1402 . reloc, data, src_ptr, dst_ptr)\
1403 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1404 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1406 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1407 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1408 . (abfd, section, reloc, shrink, link_info))
1410 .#define bfd_coff_classify_symbol(abfd, sym)\
1411 . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1412 . (abfd, sym))
1414 .#define bfd_coff_compute_section_file_positions(abfd)\
1415 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1416 . (abfd))
1418 .#define bfd_coff_start_final_link(obfd, info)\
1419 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1420 . (obfd, info))
1421 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1422 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1423 . (obfd, info, ibfd, o, con, rel, isyms, secs))
1424 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1425 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1426 . (abfd, sec, rel, h, sym, addendp))
1427 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1428 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1429 . (obfd, info, ibfd, sec, rel, adjustedp))
1430 .#define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
1431 . value, string, cp, coll, hashp)\
1432 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1433 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1435 .#define bfd_coff_link_output_has_begun(a,p) \
1436 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
1437 .#define bfd_coff_final_link_postscript(a,p) \
1438 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
1442 /* See whether the magic number matches. */
1444 static bfd_boolean
1445 coff_bad_format_hook (abfd, filehdr)
1446 bfd * abfd ATTRIBUTE_UNUSED;
1447 PTR filehdr;
1449 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1451 if (BADMAG (*internal_f))
1452 return FALSE;
1454 /* If the optional header is NULL or not the correct size then
1455 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1456 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1457 optional header is of a different size.
1459 But the mips keeps extra stuff in it's opthdr, so dont check
1460 when doing that. */
1462 #if defined(M88) || defined(I960)
1463 if (internal_f->f_opthdr != 0 && bfd_coff_aoutsz (abfd) != internal_f->f_opthdr)
1464 return FALSE;
1465 #endif
1467 return TRUE;
1470 #ifdef TICOFF
1471 static bfd_boolean
1472 ticoff0_bad_format_hook (abfd, filehdr)
1473 bfd *abfd ATTRIBUTE_UNUSED;
1474 PTR filehdr;
1476 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1478 if (COFF0_BADMAG (*internal_f))
1479 return FALSE;
1481 return TRUE;
1483 #endif
1485 #ifdef TICOFF
1486 static bfd_boolean
1487 ticoff1_bad_format_hook (abfd, filehdr)
1488 bfd *abfd ATTRIBUTE_UNUSED;
1489 PTR filehdr;
1491 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1493 if (COFF1_BADMAG (*internal_f))
1494 return FALSE;
1496 return TRUE;
1498 #endif
1500 /* Check whether this section uses an alignment other than the
1501 default. */
1503 static void
1504 coff_set_custom_section_alignment (abfd, section, alignment_table, table_size)
1505 bfd *abfd ATTRIBUTE_UNUSED;
1506 asection *section;
1507 const struct coff_section_alignment_entry *alignment_table;
1508 const unsigned int table_size;
1510 const unsigned int default_alignment = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1511 unsigned int i;
1513 for (i = 0; i < table_size; ++i)
1515 const char *secname = bfd_get_section_name (abfd, section);
1517 if (alignment_table[i].comparison_length == (unsigned int) -1
1518 ? strcmp (alignment_table[i].name, secname) == 0
1519 : strncmp (alignment_table[i].name, secname,
1520 alignment_table[i].comparison_length) == 0)
1521 break;
1523 if (i >= table_size)
1524 return;
1526 if (alignment_table[i].default_alignment_min != COFF_ALIGNMENT_FIELD_EMPTY
1527 && default_alignment < alignment_table[i].default_alignment_min)
1528 return;
1530 if (alignment_table[i].default_alignment_max != COFF_ALIGNMENT_FIELD_EMPTY
1531 #if COFF_DEFAULT_SECTION_ALIGNMENT_POWER != 0
1532 && default_alignment > alignment_table[i].default_alignment_max
1533 #endif
1535 return;
1537 section->alignment_power = alignment_table[i].alignment_power;
1540 /* Custom section alignment records. */
1542 static const struct coff_section_alignment_entry
1543 coff_section_alignment_table[] =
1545 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1546 COFF_SECTION_ALIGNMENT_ENTRIES,
1547 #endif
1548 /* There must not be any gaps between .stabstr sections. */
1549 { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1550 1, COFF_ALIGNMENT_FIELD_EMPTY, 0 },
1551 /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */
1552 { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1553 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1554 /* Similarly for the .ctors and .dtors sections. */
1555 { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1556 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1557 { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1558 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }
1561 static const unsigned int coff_section_alignment_table_size =
1562 sizeof coff_section_alignment_table / sizeof coff_section_alignment_table[0];
1564 /* Initialize a section structure with information peculiar to this
1565 particular implementation of COFF. */
1567 static bfd_boolean
1568 coff_new_section_hook (abfd, section)
1569 bfd * abfd;
1570 asection * section;
1572 combined_entry_type *native;
1573 bfd_size_type amt;
1575 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1577 #ifdef RS6000COFF_C
1578 if (bfd_xcoff_text_align_power (abfd) != 0
1579 && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
1580 section->alignment_power = bfd_xcoff_text_align_power (abfd);
1581 if (bfd_xcoff_data_align_power (abfd) != 0
1582 && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
1583 section->alignment_power = bfd_xcoff_data_align_power (abfd);
1584 #endif
1586 /* Allocate aux records for section symbols, to store size and
1587 related info.
1589 @@ The 10 is a guess at a plausible maximum number of aux entries
1590 (but shouldn't be a constant). */
1591 amt = sizeof (combined_entry_type) * 10;
1592 native = (combined_entry_type *) bfd_zalloc (abfd, amt);
1593 if (native == NULL)
1594 return FALSE;
1596 /* We don't need to set up n_name, n_value, or n_scnum in the native
1597 symbol information, since they'll be overridden by the BFD symbol
1598 anyhow. However, we do need to set the type and storage class,
1599 in case this symbol winds up getting written out. The value 0
1600 for n_numaux is already correct. */
1602 native->u.syment.n_type = T_NULL;
1603 native->u.syment.n_sclass = C_STAT;
1605 coffsymbol (section->symbol)->native = native;
1607 coff_set_custom_section_alignment (abfd, section,
1608 coff_section_alignment_table,
1609 coff_section_alignment_table_size);
1611 return TRUE;
1614 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1616 /* Set the alignment of a BFD section. */
1618 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1620 static void
1621 coff_set_alignment_hook (abfd, section, scnhdr)
1622 bfd * abfd ATTRIBUTE_UNUSED;
1623 asection * section;
1624 PTR scnhdr;
1626 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1627 unsigned int i;
1629 #ifdef I960
1630 /* Extract ALIGN from 2**ALIGN stored in section header. */
1631 for (i = 0; i < 32; i++)
1632 if ((1 << i) >= hdr->s_align)
1633 break;
1634 #endif
1635 #ifdef TIC80COFF
1636 /* TI tools puts the alignment power in bits 8-11. */
1637 i = (hdr->s_flags >> 8) & 0xF ;
1638 #endif
1639 #ifdef COFF_DECODE_ALIGNMENT
1640 i = COFF_DECODE_ALIGNMENT(hdr->s_flags);
1641 #endif
1642 section->alignment_power = i;
1644 #ifdef coff_set_section_load_page
1645 coff_set_section_load_page (section, hdr->s_page);
1646 #endif
1649 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1650 #ifdef COFF_WITH_PE
1652 /* A couple of macros to help setting the alignment power field. */
1653 #define ALIGN_SET(field,x,y) \
1654 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
1656 section->alignment_power = y;\
1659 #define ELIFALIGN_SET(field,x,y) \
1660 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
1662 section->alignment_power = y;\
1665 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1667 static void
1668 coff_set_alignment_hook (abfd, section, scnhdr)
1669 bfd * abfd ATTRIBUTE_UNUSED;
1670 asection * section;
1671 PTR scnhdr;
1673 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1674 bfd_size_type amt;
1676 ALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_64BYTES, 6)
1677 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_32BYTES, 5)
1678 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_16BYTES, 4)
1679 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_8BYTES, 3)
1680 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_4BYTES, 2)
1681 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_2BYTES, 1)
1682 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_1BYTES, 0)
1684 /* In a PE image file, the s_paddr field holds the virtual size of a
1685 section, while the s_size field holds the raw size. We also keep
1686 the original section flag value, since not every bit can be
1687 mapped onto a generic BFD section bit. */
1688 if (coff_section_data (abfd, section) == NULL)
1690 amt = sizeof (struct coff_section_tdata);
1691 section->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
1692 if (section->used_by_bfd == NULL)
1694 /* FIXME: Return error. */
1695 abort ();
1698 if (pei_section_data (abfd, section) == NULL)
1700 amt = sizeof (struct pei_section_tdata);
1701 coff_section_data (abfd, section)->tdata = (PTR) bfd_zalloc (abfd, amt);
1702 if (coff_section_data (abfd, section)->tdata == NULL)
1704 /* FIXME: Return error. */
1705 abort ();
1708 pei_section_data (abfd, section)->virt_size = hdr->s_paddr;
1709 pei_section_data (abfd, section)->pe_flags = hdr->s_flags;
1711 section->lma = hdr->s_vaddr;
1713 /* Check for extended relocs. */
1714 if (hdr->s_flags & IMAGE_SCN_LNK_NRELOC_OVFL)
1716 struct external_reloc dst;
1717 struct internal_reloc n;
1718 file_ptr oldpos = bfd_tell (abfd);
1719 bfd_size_type relsz = bfd_coff_relsz (abfd);
1721 bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0);
1722 if (bfd_bread ((PTR) &dst, relsz, abfd) != relsz)
1723 return;
1725 coff_swap_reloc_in (abfd, &dst, &n);
1726 bfd_seek (abfd, oldpos, 0);
1727 section->reloc_count = hdr->s_nreloc = n.r_vaddr - 1;
1728 section->rel_filepos += relsz;
1730 else if (hdr->s_nreloc == 0xffff)
1731 (*_bfd_error_handler)
1732 ("%s: warning: claims to have 0xffff relocs, without overflow",
1733 bfd_get_filename (abfd));
1735 #undef ALIGN_SET
1736 #undef ELIFALIGN_SET
1738 #else /* ! COFF_WITH_PE */
1739 #ifdef RS6000COFF_C
1741 /* We grossly abuse this function to handle XCOFF overflow headers.
1742 When we see one, we correct the reloc and line number counts in the
1743 real header, and remove the section we just created. */
1745 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1747 static void
1748 coff_set_alignment_hook (abfd, section, scnhdr)
1749 bfd *abfd;
1750 asection *section;
1751 PTR scnhdr;
1753 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1754 asection *real_sec;
1755 asection **ps;
1757 if ((hdr->s_flags & STYP_OVRFLO) == 0)
1758 return;
1760 real_sec = coff_section_from_bfd_index (abfd, (int) hdr->s_nreloc);
1761 if (real_sec == NULL)
1762 return;
1764 real_sec->reloc_count = hdr->s_paddr;
1765 real_sec->lineno_count = hdr->s_vaddr;
1767 for (ps = &abfd->sections; *ps != NULL; ps = &(*ps)->next)
1769 if (*ps == section)
1771 bfd_section_list_remove (abfd, ps);
1772 --abfd->section_count;
1773 break;
1778 #else /* ! RS6000COFF_C */
1780 #define coff_set_alignment_hook \
1781 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1783 #endif /* ! RS6000COFF_C */
1784 #endif /* ! COFF_WITH_PE */
1785 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1787 #ifndef coff_mkobject
1789 static bfd_boolean coff_mkobject PARAMS ((bfd *));
1791 static bfd_boolean
1792 coff_mkobject (abfd)
1793 bfd * abfd;
1795 coff_data_type *coff;
1796 bfd_size_type amt = sizeof (coff_data_type);
1798 abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, amt);
1799 if (abfd->tdata.coff_obj_data == 0)
1800 return FALSE;
1801 coff = coff_data (abfd);
1802 coff->symbols = (coff_symbol_type *) NULL;
1803 coff->conversion_table = (unsigned int *) NULL;
1804 coff->raw_syments = (struct coff_ptr_struct *) NULL;
1805 coff->relocbase = 0;
1806 coff->local_toc_sym_map = 0;
1808 /* make_abs_section(abfd);*/
1810 return TRUE;
1812 #endif
1814 /* Create the COFF backend specific information. */
1816 #ifndef coff_mkobject_hook
1817 static PTR
1818 coff_mkobject_hook (abfd, filehdr, aouthdr)
1819 bfd * abfd;
1820 PTR filehdr;
1821 PTR aouthdr ATTRIBUTE_UNUSED;
1823 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1824 coff_data_type *coff;
1826 if (! coff_mkobject (abfd))
1827 return NULL;
1829 coff = coff_data (abfd);
1831 coff->sym_filepos = internal_f->f_symptr;
1833 /* These members communicate important constants about the symbol
1834 table to GDB's symbol-reading code. These `constants'
1835 unfortunately vary among coff implementations... */
1836 coff->local_n_btmask = N_BTMASK;
1837 coff->local_n_btshft = N_BTSHFT;
1838 coff->local_n_tmask = N_TMASK;
1839 coff->local_n_tshift = N_TSHIFT;
1840 coff->local_symesz = bfd_coff_symesz (abfd);
1841 coff->local_auxesz = bfd_coff_auxesz (abfd);
1842 coff->local_linesz = bfd_coff_linesz (abfd);
1844 coff->timestamp = internal_f->f_timdat;
1846 obj_raw_syment_count (abfd) =
1847 obj_conv_table_size (abfd) =
1848 internal_f->f_nsyms;
1850 #ifdef RS6000COFF_C
1851 if ((internal_f->f_flags & F_SHROBJ) != 0)
1852 abfd->flags |= DYNAMIC;
1853 if (aouthdr != NULL && internal_f->f_opthdr >= bfd_coff_aoutsz (abfd))
1855 struct internal_aouthdr *internal_a =
1856 (struct internal_aouthdr *) aouthdr;
1857 struct xcoff_tdata *xcoff;
1859 xcoff = xcoff_data (abfd);
1860 # ifdef U803XTOCMAGIC
1861 xcoff->xcoff64 = internal_f->f_magic == U803XTOCMAGIC;
1862 # else
1863 xcoff->xcoff64 = 0;
1864 # endif
1865 xcoff->full_aouthdr = TRUE;
1866 xcoff->toc = internal_a->o_toc;
1867 xcoff->sntoc = internal_a->o_sntoc;
1868 xcoff->snentry = internal_a->o_snentry;
1869 bfd_xcoff_text_align_power (abfd) = internal_a->o_algntext;
1870 bfd_xcoff_data_align_power (abfd) = internal_a->o_algndata;
1871 xcoff->modtype = internal_a->o_modtype;
1872 xcoff->cputype = internal_a->o_cputype;
1873 xcoff->maxdata = internal_a->o_maxdata;
1874 xcoff->maxstack = internal_a->o_maxstack;
1876 #endif
1878 #ifdef ARM
1879 /* Set the flags field from the COFF header read in. */
1880 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
1881 coff->flags = 0;
1882 #endif
1884 #ifdef COFF_WITH_PE
1885 /* FIXME: I'm not sure this is ever executed, since peicode.h
1886 defines coff_mkobject_hook. */
1887 if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
1888 abfd->flags |= HAS_DEBUG;
1889 #endif
1891 return (PTR) coff;
1893 #endif
1895 /* Determine the machine architecture and type. FIXME: This is target
1896 dependent because the magic numbers are defined in the target
1897 dependent header files. But there is no particular need for this.
1898 If the magic numbers were moved to a separate file, this function
1899 would be target independent and would also be much more successful
1900 at linking together COFF files for different architectures. */
1902 static bfd_boolean
1903 coff_set_arch_mach_hook (abfd, filehdr)
1904 bfd *abfd;
1905 PTR filehdr;
1907 unsigned long machine;
1908 enum bfd_architecture arch;
1909 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1911 /* Zero selects the default machine for an arch. */
1912 machine = 0;
1913 switch (internal_f->f_magic)
1915 #ifdef OR32_MAGIC_BIG
1916 case OR32_MAGIC_BIG:
1917 case OR32_MAGIC_LITTLE:
1918 arch = bfd_arch_or32;
1919 break;
1920 #endif
1921 #ifdef PPCMAGIC
1922 case PPCMAGIC:
1923 arch = bfd_arch_powerpc;
1924 break;
1925 #endif
1926 #ifdef I386MAGIC
1927 case I386MAGIC:
1928 case I386PTXMAGIC:
1929 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */
1930 case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */
1931 arch = bfd_arch_i386;
1932 break;
1933 #endif
1934 #ifdef IA64MAGIC
1935 case IA64MAGIC:
1936 arch = bfd_arch_ia64;
1937 break;
1938 #endif
1939 #ifdef A29K_MAGIC_BIG
1940 case A29K_MAGIC_BIG:
1941 case A29K_MAGIC_LITTLE:
1942 arch = bfd_arch_a29k;
1943 break;
1944 #endif
1945 #ifdef ARMMAGIC
1946 case ARMMAGIC:
1947 case ARMPEMAGIC:
1948 case THUMBPEMAGIC:
1949 arch = bfd_arch_arm;
1950 machine = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
1951 if (machine == bfd_mach_arm_unknown)
1953 switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK)
1955 case F_ARM_2: machine = bfd_mach_arm_2; break;
1956 case F_ARM_2a: machine = bfd_mach_arm_2a; break;
1957 case F_ARM_3: machine = bfd_mach_arm_3; break;
1958 default:
1959 case F_ARM_3M: machine = bfd_mach_arm_3M; break;
1960 case F_ARM_4: machine = bfd_mach_arm_4; break;
1961 case F_ARM_4T: machine = bfd_mach_arm_4T; break;
1962 /* The COFF header does not have enough bits available
1963 to cover all the different ARM architectures. So
1964 we interpret F_ARM_5, the highest flag value to mean
1965 "the highest ARM architecture known to BFD" which is
1966 currently the XScale. */
1967 case F_ARM_5: machine = bfd_mach_arm_XScale; break;
1970 break;
1971 #endif
1972 #ifdef MC68MAGIC
1973 case MC68MAGIC:
1974 case M68MAGIC:
1975 #ifdef MC68KBCSMAGIC
1976 case MC68KBCSMAGIC:
1977 #endif
1978 #ifdef APOLLOM68KMAGIC
1979 case APOLLOM68KMAGIC:
1980 #endif
1981 #ifdef LYNXCOFFMAGIC
1982 case LYNXCOFFMAGIC:
1983 #endif
1984 arch = bfd_arch_m68k;
1985 machine = bfd_mach_m68020;
1986 break;
1987 #endif
1988 #ifdef MC88MAGIC
1989 case MC88MAGIC:
1990 case MC88DMAGIC:
1991 case MC88OMAGIC:
1992 arch = bfd_arch_m88k;
1993 machine = 88100;
1994 break;
1995 #endif
1996 #ifdef Z8KMAGIC
1997 case Z8KMAGIC:
1998 arch = bfd_arch_z8k;
1999 switch (internal_f->f_flags & F_MACHMASK)
2001 case F_Z8001:
2002 machine = bfd_mach_z8001;
2003 break;
2004 case F_Z8002:
2005 machine = bfd_mach_z8002;
2006 break;
2007 default:
2008 return FALSE;
2010 break;
2011 #endif
2012 #ifdef I860
2013 case I860MAGIC:
2014 arch = bfd_arch_i860;
2015 break;
2016 #endif
2017 #ifdef I960
2018 #ifdef I960ROMAGIC
2019 case I960ROMAGIC:
2020 case I960RWMAGIC:
2021 arch = bfd_arch_i960;
2022 switch (F_I960TYPE & internal_f->f_flags)
2024 default:
2025 case F_I960CORE:
2026 machine = bfd_mach_i960_core;
2027 break;
2028 case F_I960KB:
2029 machine = bfd_mach_i960_kb_sb;
2030 break;
2031 case F_I960MC:
2032 machine = bfd_mach_i960_mc;
2033 break;
2034 case F_I960XA:
2035 machine = bfd_mach_i960_xa;
2036 break;
2037 case F_I960CA:
2038 machine = bfd_mach_i960_ca;
2039 break;
2040 case F_I960KA:
2041 machine = bfd_mach_i960_ka_sa;
2042 break;
2043 case F_I960JX:
2044 machine = bfd_mach_i960_jx;
2045 break;
2046 case F_I960HX:
2047 machine = bfd_mach_i960_hx;
2048 break;
2050 break;
2051 #endif
2052 #endif
2054 #ifdef RS6000COFF_C
2055 #ifdef XCOFF64
2056 case U64_TOCMAGIC:
2057 case U803XTOCMAGIC:
2058 #else
2059 case U802ROMAGIC:
2060 case U802WRMAGIC:
2061 case U802TOCMAGIC:
2062 #endif
2064 int cputype;
2066 if (xcoff_data (abfd)->cputype != -1)
2067 cputype = xcoff_data (abfd)->cputype & 0xff;
2068 else
2070 /* We did not get a value from the a.out header. If the
2071 file has not been stripped, we may be able to get the
2072 architecture information from the first symbol, if it
2073 is a .file symbol. */
2074 if (obj_raw_syment_count (abfd) == 0)
2075 cputype = 0;
2076 else
2078 bfd_byte *buf;
2079 struct internal_syment sym;
2080 bfd_size_type amt = bfd_coff_symesz (abfd);
2082 buf = (bfd_byte *) bfd_malloc (amt);
2083 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
2084 || bfd_bread (buf, amt, abfd) != amt)
2086 free (buf);
2087 return FALSE;
2089 bfd_coff_swap_sym_in (abfd, (PTR) buf, (PTR) &sym);
2090 if (sym.n_sclass == C_FILE)
2091 cputype = sym.n_type & 0xff;
2092 else
2093 cputype = 0;
2094 free (buf);
2098 /* FIXME: We don't handle all cases here. */
2099 switch (cputype)
2101 default:
2102 case 0:
2103 arch = bfd_xcoff_architecture (abfd);
2104 machine = bfd_xcoff_machine (abfd);
2105 break;
2107 case 1:
2108 arch = bfd_arch_powerpc;
2109 machine = bfd_mach_ppc_601;
2110 break;
2111 case 2: /* 64 bit PowerPC */
2112 arch = bfd_arch_powerpc;
2113 machine = bfd_mach_ppc_620;
2114 break;
2115 case 3:
2116 arch = bfd_arch_powerpc;
2117 machine = bfd_mach_ppc;
2118 break;
2119 case 4:
2120 arch = bfd_arch_rs6000;
2121 machine = bfd_mach_rs6k;
2122 break;
2125 break;
2126 #endif
2128 #ifdef WE32KMAGIC
2129 case WE32KMAGIC:
2130 arch = bfd_arch_we32k;
2131 break;
2132 #endif
2134 #ifdef H8300MAGIC
2135 case H8300MAGIC:
2136 arch = bfd_arch_h8300;
2137 machine = bfd_mach_h8300;
2138 /* !! FIXME this probably isn't the right place for this. */
2139 abfd->flags |= BFD_IS_RELAXABLE;
2140 break;
2141 #endif
2143 #ifdef H8300HMAGIC
2144 case H8300HMAGIC:
2145 arch = bfd_arch_h8300;
2146 machine = bfd_mach_h8300h;
2147 /* !! FIXME this probably isn't the right place for this. */
2148 abfd->flags |= BFD_IS_RELAXABLE;
2149 break;
2150 #endif
2152 #ifdef H8300SMAGIC
2153 case H8300SMAGIC:
2154 arch = bfd_arch_h8300;
2155 machine = bfd_mach_h8300s;
2156 /* !! FIXME this probably isn't the right place for this. */
2157 abfd->flags |= BFD_IS_RELAXABLE;
2158 break;
2159 #endif
2161 #ifdef H8300HNMAGIC
2162 case H8300HNMAGIC:
2163 arch = bfd_arch_h8300;
2164 machine = bfd_mach_h8300hn;
2165 /* !! FIXME this probably isn't the right place for this. */
2166 abfd->flags |= BFD_IS_RELAXABLE;
2167 break;
2168 #endif
2170 #ifdef H8300SNMAGIC
2171 case H8300SNMAGIC:
2172 arch = bfd_arch_h8300;
2173 machine = bfd_mach_h8300sn;
2174 /* !! FIXME this probably isn't the right place for this. */
2175 abfd->flags |= BFD_IS_RELAXABLE;
2176 break;
2177 #endif
2179 #ifdef SH_ARCH_MAGIC_BIG
2180 case SH_ARCH_MAGIC_BIG:
2181 case SH_ARCH_MAGIC_LITTLE:
2182 #ifdef COFF_WITH_PE
2183 case SH_ARCH_MAGIC_WINCE:
2184 #endif
2185 arch = bfd_arch_sh;
2186 break;
2187 #endif
2189 #ifdef MIPS_ARCH_MAGIC_WINCE
2190 case MIPS_ARCH_MAGIC_WINCE:
2191 arch = bfd_arch_mips;
2192 break;
2193 #endif
2195 #ifdef H8500MAGIC
2196 case H8500MAGIC:
2197 arch = bfd_arch_h8500;
2198 break;
2199 #endif
2201 #ifdef SPARCMAGIC
2202 case SPARCMAGIC:
2203 #ifdef LYNXCOFFMAGIC
2204 case LYNXCOFFMAGIC:
2205 #endif
2206 arch = bfd_arch_sparc;
2207 break;
2208 #endif
2210 #ifdef TIC30MAGIC
2211 case TIC30MAGIC:
2212 arch = bfd_arch_tic30;
2213 break;
2214 #endif
2216 #ifdef TICOFF0MAGIC
2217 #ifdef TICOFF_TARGET_ARCH
2218 /* This TI COFF section should be used by all new TI COFF v0 targets. */
2219 case TICOFF0MAGIC:
2220 arch = TICOFF_TARGET_ARCH;
2221 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2222 break;
2223 #endif
2224 #endif
2226 #ifdef TICOFF1MAGIC
2227 /* This TI COFF section should be used by all new TI COFF v1/2 targets. */
2228 /* TI COFF1 and COFF2 use the target_id field to specify which arch. */
2229 case TICOFF1MAGIC:
2230 case TICOFF2MAGIC:
2231 switch (internal_f->f_target_id)
2233 #ifdef TI_TARGET_ID
2234 case TI_TARGET_ID:
2235 arch = TICOFF_TARGET_ARCH;
2236 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2237 break;
2238 #endif
2239 default:
2240 arch = bfd_arch_obscure;
2241 (*_bfd_error_handler)
2242 (_("Unrecognized TI COFF target id '0x%x'"),
2243 internal_f->f_target_id);
2244 break;
2246 break;
2247 #endif
2249 #ifdef TIC80_ARCH_MAGIC
2250 case TIC80_ARCH_MAGIC:
2251 arch = bfd_arch_tic80;
2252 break;
2253 #endif
2255 #ifdef MCOREMAGIC
2256 case MCOREMAGIC:
2257 arch = bfd_arch_mcore;
2258 break;
2259 #endif
2261 #ifdef W65MAGIC
2262 case W65MAGIC:
2263 arch = bfd_arch_w65;
2264 break;
2265 #endif
2267 default: /* Unreadable input file type. */
2268 arch = bfd_arch_obscure;
2269 break;
2272 bfd_default_set_arch_mach (abfd, arch, machine);
2273 return TRUE;
2276 #ifdef SYMNAME_IN_DEBUG
2278 static bfd_boolean symname_in_debug_hook
2279 PARAMS ((bfd *, struct internal_syment *));
2281 static bfd_boolean
2282 symname_in_debug_hook (abfd, sym)
2283 bfd * abfd ATTRIBUTE_UNUSED;
2284 struct internal_syment *sym;
2286 return SYMNAME_IN_DEBUG (sym) != 0;
2289 #else
2291 #define symname_in_debug_hook \
2292 (bfd_boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2294 #endif
2296 #ifdef RS6000COFF_C
2298 #ifdef XCOFF64
2299 #define FORCE_SYMNAMES_IN_STRINGS
2300 #endif
2302 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2304 static bfd_boolean coff_pointerize_aux_hook
2305 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2306 unsigned int, combined_entry_type *));
2308 static bfd_boolean
2309 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2310 bfd *abfd ATTRIBUTE_UNUSED;
2311 combined_entry_type *table_base;
2312 combined_entry_type *symbol;
2313 unsigned int indaux;
2314 combined_entry_type *aux;
2316 int class = symbol->u.syment.n_sclass;
2318 if ((class == C_EXT || class == C_HIDEXT)
2319 && indaux + 1 == symbol->u.syment.n_numaux)
2321 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2323 aux->u.auxent.x_csect.x_scnlen.p =
2324 table_base + aux->u.auxent.x_csect.x_scnlen.l;
2325 aux->fix_scnlen = 1;
2328 /* Return TRUE to indicate that the caller should not do any
2329 further work on this auxent. */
2330 return TRUE;
2333 /* Return FALSE to indicate that this auxent should be handled by
2334 the caller. */
2335 return FALSE;
2338 #else
2339 #ifdef I960
2341 /* We don't want to pointerize bal entries. */
2343 static bfd_boolean coff_pointerize_aux_hook
2344 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2345 unsigned int, combined_entry_type *));
2347 static bfd_boolean
2348 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2349 bfd *abfd ATTRIBUTE_UNUSED;
2350 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2351 combined_entry_type *symbol;
2352 unsigned int indaux;
2353 combined_entry_type *aux ATTRIBUTE_UNUSED;
2355 /* Return TRUE if we don't want to pointerize this aux entry, which
2356 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2357 return (indaux == 1
2358 && (symbol->u.syment.n_sclass == C_LEAFPROC
2359 || symbol->u.syment.n_sclass == C_LEAFSTAT
2360 || symbol->u.syment.n_sclass == C_LEAFEXT));
2363 #else /* ! I960 */
2365 #define coff_pointerize_aux_hook 0
2367 #endif /* ! I960 */
2368 #endif /* ! RS6000COFF_C */
2370 /* Print an aux entry. This returns TRUE if it has printed it. */
2372 static bfd_boolean coff_print_aux
2373 PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
2374 combined_entry_type *, unsigned int));
2376 static bfd_boolean
2377 coff_print_aux (abfd, file, table_base, symbol, aux, indaux)
2378 bfd *abfd ATTRIBUTE_UNUSED;
2379 FILE *file ATTRIBUTE_UNUSED;
2380 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2381 combined_entry_type *symbol ATTRIBUTE_UNUSED;
2382 combined_entry_type *aux ATTRIBUTE_UNUSED;
2383 unsigned int indaux ATTRIBUTE_UNUSED;
2385 #ifdef RS6000COFF_C
2386 if ((symbol->u.syment.n_sclass == C_EXT
2387 || symbol->u.syment.n_sclass == C_HIDEXT)
2388 && indaux + 1 == symbol->u.syment.n_numaux)
2390 /* This is a csect entry. */
2391 fprintf (file, "AUX ");
2392 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
2394 BFD_ASSERT (! aux->fix_scnlen);
2395 #ifdef XCOFF64
2396 fprintf (file, "val %5lld", aux->u.auxent.x_csect.x_scnlen.l);
2397 #else
2398 fprintf (file, "val %5ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2399 #endif
2401 else
2403 fprintf (file, "indx ");
2404 if (! aux->fix_scnlen)
2405 #ifdef XCOFF64
2406 fprintf (file, "%4lld", aux->u.auxent.x_csect.x_scnlen.l);
2407 #else
2408 fprintf (file, "%4ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2409 #endif
2410 else
2411 fprintf (file, "%4ld",
2412 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
2414 fprintf (file,
2415 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2416 aux->u.auxent.x_csect.x_parmhash,
2417 (unsigned int) aux->u.auxent.x_csect.x_snhash,
2418 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
2419 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
2420 (unsigned int) aux->u.auxent.x_csect.x_smclas,
2421 aux->u.auxent.x_csect.x_stab,
2422 (unsigned int) aux->u.auxent.x_csect.x_snstab);
2423 return TRUE;
2425 #endif
2427 /* Return FALSE to indicate that no special action was taken. */
2428 return FALSE;
2432 SUBSUBSECTION
2433 Writing relocations
2435 To write relocations, the back end steps though the
2436 canonical relocation table and create an
2437 @code{internal_reloc}. The symbol index to use is removed from
2438 the @code{offset} field in the symbol table supplied. The
2439 address comes directly from the sum of the section base
2440 address and the relocation offset; the type is dug directly
2441 from the howto field. Then the @code{internal_reloc} is
2442 swapped into the shape of an @code{external_reloc} and written
2443 out to disk.
2447 #ifdef TARG_AUX
2449 static int compare_arelent_ptr PARAMS ((const PTR, const PTR));
2451 /* AUX's ld wants relocations to be sorted. */
2452 static int
2453 compare_arelent_ptr (x, y)
2454 const PTR x;
2455 const PTR y;
2457 const arelent **a = (const arelent **) x;
2458 const arelent **b = (const arelent **) y;
2459 bfd_size_type aadr = (*a)->address;
2460 bfd_size_type badr = (*b)->address;
2462 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
2465 #endif /* TARG_AUX */
2467 static bfd_boolean
2468 coff_write_relocs (abfd, first_undef)
2469 bfd * abfd;
2470 int first_undef;
2472 asection *s;
2474 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
2476 unsigned int i;
2477 struct external_reloc dst;
2478 arelent **p;
2480 #ifndef TARG_AUX
2481 p = s->orelocation;
2482 #else
2484 /* Sort relocations before we write them out. */
2485 bfd_size_type amt;
2487 amt = s->reloc_count;
2488 amt *= sizeof (arelent *);
2489 p = (arelent **) bfd_malloc (amt);
2490 if (p == NULL && s->reloc_count > 0)
2491 return FALSE;
2492 memcpy (p, s->orelocation, (size_t) amt);
2493 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
2495 #endif
2497 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
2498 return FALSE;
2500 #ifdef COFF_WITH_PE
2501 if (obj_pe (abfd) && s->reloc_count >= 0xffff)
2503 /* Encode real count here as first reloc. */
2504 struct internal_reloc n;
2506 memset ((PTR) & n, 0, sizeof (n));
2507 /* Add one to count *this* reloc (grr). */
2508 n.r_vaddr = s->reloc_count + 1;
2509 coff_swap_reloc_out (abfd, &n, &dst);
2510 if (bfd_bwrite ((PTR) & dst, (bfd_size_type) bfd_coff_relsz (abfd),
2511 abfd) != bfd_coff_relsz (abfd))
2512 return FALSE;
2514 #endif
2516 for (i = 0; i < s->reloc_count; i++)
2518 struct internal_reloc n;
2519 arelent *q = p[i];
2521 memset ((PTR) & n, 0, sizeof (n));
2523 /* Now we've renumbered the symbols we know where the
2524 undefined symbols live in the table. Check the reloc
2525 entries for symbols who's output bfd isn't the right one.
2526 This is because the symbol was undefined (which means
2527 that all the pointers are never made to point to the same
2528 place). This is a bad thing,'cause the symbols attached
2529 to the output bfd are indexed, so that the relocation
2530 entries know which symbol index they point to. So we
2531 have to look up the output symbol here. */
2533 if (q->sym_ptr_ptr[0]->the_bfd != abfd)
2535 int j;
2536 const char *sname = q->sym_ptr_ptr[0]->name;
2537 asymbol **outsyms = abfd->outsymbols;
2539 for (j = first_undef; outsyms[j]; j++)
2541 const char *intable = outsyms[j]->name;
2543 if (strcmp (intable, sname) == 0) {
2544 /* Got a hit, so repoint the reloc. */
2545 q->sym_ptr_ptr = outsyms + j;
2546 break;
2551 n.r_vaddr = q->address + s->vma;
2553 #ifdef R_IHCONST
2554 /* The 29k const/consth reloc pair is a real kludge. The consth
2555 part doesn't have a symbol; it has an offset. So rebuilt
2556 that here. */
2557 if (q->howto->type == R_IHCONST)
2558 n.r_symndx = q->addend;
2559 else
2560 #endif
2561 if (q->sym_ptr_ptr)
2563 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2564 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q,s))
2565 #else
2566 if ((*q->sym_ptr_ptr)->section == bfd_abs_section_ptr
2567 && ((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0)
2568 #endif
2569 /* This is a relocation relative to the absolute symbol. */
2570 n.r_symndx = -1;
2571 else
2573 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
2574 /* Take notice if the symbol reloc points to a symbol
2575 we don't have in our symbol table. What should we
2576 do for this?? */
2577 if (n.r_symndx > obj_conv_table_size (abfd))
2578 abort ();
2582 #ifdef SWAP_OUT_RELOC_OFFSET
2583 n.r_offset = q->addend;
2584 #endif
2586 #ifdef SELECT_RELOC
2587 /* Work out reloc type from what is required. */
2588 SELECT_RELOC (n, q->howto);
2589 #else
2590 n.r_type = q->howto->type;
2591 #endif
2592 coff_swap_reloc_out (abfd, &n, &dst);
2594 if (bfd_bwrite ((PTR) & dst, (bfd_size_type) bfd_coff_relsz (abfd),
2595 abfd) != bfd_coff_relsz (abfd))
2596 return FALSE;
2599 #ifdef TARG_AUX
2600 if (p != NULL)
2601 free (p);
2602 #endif
2605 return TRUE;
2608 /* Set flags and magic number of a coff file from architecture and machine
2609 type. Result is TRUE if we can represent the arch&type, FALSE if not. */
2611 static bfd_boolean
2612 coff_set_flags (abfd, magicp, flagsp)
2613 bfd * abfd;
2614 unsigned int *magicp ATTRIBUTE_UNUSED;
2615 unsigned short *flagsp ATTRIBUTE_UNUSED;
2617 switch (bfd_get_arch (abfd))
2619 #ifdef Z8KMAGIC
2620 case bfd_arch_z8k:
2621 *magicp = Z8KMAGIC;
2622 switch (bfd_get_mach (abfd))
2624 case bfd_mach_z8001:
2625 *flagsp = F_Z8001;
2626 break;
2627 case bfd_mach_z8002:
2628 *flagsp = F_Z8002;
2629 break;
2630 default:
2631 return FALSE;
2633 return TRUE;
2634 #endif
2635 #ifdef I960ROMAGIC
2637 case bfd_arch_i960:
2640 unsigned flags;
2641 *magicp = I960ROMAGIC;
2643 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2644 I960RWMAGIC); FIXME???
2646 switch (bfd_get_mach (abfd))
2648 case bfd_mach_i960_core:
2649 flags = F_I960CORE;
2650 break;
2651 case bfd_mach_i960_kb_sb:
2652 flags = F_I960KB;
2653 break;
2654 case bfd_mach_i960_mc:
2655 flags = F_I960MC;
2656 break;
2657 case bfd_mach_i960_xa:
2658 flags = F_I960XA;
2659 break;
2660 case bfd_mach_i960_ca:
2661 flags = F_I960CA;
2662 break;
2663 case bfd_mach_i960_ka_sa:
2664 flags = F_I960KA;
2665 break;
2666 case bfd_mach_i960_jx:
2667 flags = F_I960JX;
2668 break;
2669 case bfd_mach_i960_hx:
2670 flags = F_I960HX;
2671 break;
2672 default:
2673 return FALSE;
2675 *flagsp = flags;
2676 return TRUE;
2678 break;
2679 #endif
2681 #ifdef TIC30MAGIC
2682 case bfd_arch_tic30:
2683 *magicp = TIC30MAGIC;
2684 return TRUE;
2685 #endif
2687 #ifdef TICOFF_DEFAULT_MAGIC
2688 case TICOFF_TARGET_ARCH:
2689 /* If there's no indication of which version we want, use the default. */
2690 if (!abfd->xvec )
2691 *magicp = TICOFF_DEFAULT_MAGIC;
2692 else
2694 /* We may want to output in a different COFF version. */
2695 switch (abfd->xvec->name[4])
2697 case '0':
2698 *magicp = TICOFF0MAGIC;
2699 break;
2700 case '1':
2701 *magicp = TICOFF1MAGIC;
2702 break;
2703 case '2':
2704 *magicp = TICOFF2MAGIC;
2705 break;
2706 default:
2707 return FALSE;
2710 TICOFF_TARGET_MACHINE_SET (flagsp, bfd_get_mach (abfd));
2711 return TRUE;
2712 #endif
2714 #ifdef TIC80_ARCH_MAGIC
2715 case bfd_arch_tic80:
2716 *magicp = TIC80_ARCH_MAGIC;
2717 return TRUE;
2718 #endif
2719 #ifdef ARMMAGIC
2720 case bfd_arch_arm:
2721 #ifdef ARM_WINCE
2722 * magicp = ARMPEMAGIC;
2723 #else
2724 * magicp = ARMMAGIC;
2725 #endif
2726 * flagsp = 0;
2727 if (APCS_SET (abfd))
2729 if (APCS_26_FLAG (abfd))
2730 * flagsp |= F_APCS26;
2732 if (APCS_FLOAT_FLAG (abfd))
2733 * flagsp |= F_APCS_FLOAT;
2735 if (PIC_FLAG (abfd))
2736 * flagsp |= F_PIC;
2738 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2739 * flagsp |= F_INTERWORK;
2740 switch (bfd_get_mach (abfd))
2742 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2743 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2744 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2745 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2746 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2747 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2748 case bfd_mach_arm_5: * flagsp |= F_ARM_5; break;
2749 /* FIXME: we do not have F_ARM vaues greater than F_ARM_5.
2750 See also the comment in coff_set_arch_mach_hook(). */
2751 case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break;
2752 case bfd_mach_arm_5TE: * flagsp |= F_ARM_5; break;
2753 case bfd_mach_arm_XScale: * flagsp |= F_ARM_5; break;
2755 return TRUE;
2756 #endif
2757 #ifdef PPCMAGIC
2758 case bfd_arch_powerpc:
2759 *magicp = PPCMAGIC;
2760 return TRUE;
2761 break;
2762 #endif
2763 #ifdef I386MAGIC
2764 case bfd_arch_i386:
2765 *magicp = I386MAGIC;
2766 #ifdef LYNXOS
2767 /* Just overwrite the usual value if we're doing Lynx. */
2768 *magicp = LYNXCOFFMAGIC;
2769 #endif
2770 return TRUE;
2771 break;
2772 #endif
2773 #ifdef I860MAGIC
2774 case bfd_arch_i860:
2775 *magicp = I860MAGIC;
2776 return TRUE;
2777 break;
2778 #endif
2779 #ifdef IA64MAGIC
2780 case bfd_arch_ia64:
2781 *magicp = IA64MAGIC;
2782 return TRUE;
2783 break;
2784 #endif
2785 #ifdef MC68MAGIC
2786 case bfd_arch_m68k:
2787 #ifdef APOLLOM68KMAGIC
2788 *magicp = APOLLO_COFF_VERSION_NUMBER;
2789 #else
2790 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2791 #ifdef NAMES_HAVE_UNDERSCORE
2792 *magicp = MC68KBCSMAGIC;
2793 #else
2794 *magicp = MC68MAGIC;
2795 #endif
2796 #endif
2797 #ifdef LYNXOS
2798 /* Just overwrite the usual value if we're doing Lynx. */
2799 *magicp = LYNXCOFFMAGIC;
2800 #endif
2801 return TRUE;
2802 break;
2803 #endif
2805 #ifdef MC88MAGIC
2806 case bfd_arch_m88k:
2807 *magicp = MC88OMAGIC;
2808 return TRUE;
2809 break;
2810 #endif
2811 #ifdef H8300MAGIC
2812 case bfd_arch_h8300:
2813 switch (bfd_get_mach (abfd))
2815 case bfd_mach_h8300:
2816 *magicp = H8300MAGIC;
2817 return TRUE;
2818 case bfd_mach_h8300h:
2819 *magicp = H8300HMAGIC;
2820 return TRUE;
2821 case bfd_mach_h8300s:
2822 *magicp = H8300SMAGIC;
2823 return TRUE;
2824 case bfd_mach_h8300hn:
2825 *magicp = H8300HNMAGIC;
2826 return TRUE;
2827 case bfd_mach_h8300sn:
2828 *magicp = H8300SNMAGIC;
2829 return TRUE;
2831 break;
2832 #endif
2834 #ifdef SH_ARCH_MAGIC_BIG
2835 case bfd_arch_sh:
2836 #ifdef COFF_IMAGE_WITH_PE
2837 *magicp = SH_ARCH_MAGIC_WINCE;
2838 #else
2839 if (bfd_big_endian (abfd))
2840 *magicp = SH_ARCH_MAGIC_BIG;
2841 else
2842 *magicp = SH_ARCH_MAGIC_LITTLE;
2843 #endif
2844 return TRUE;
2845 break;
2846 #endif
2848 #ifdef MIPS_ARCH_MAGIC_WINCE
2849 case bfd_arch_mips:
2850 *magicp = MIPS_ARCH_MAGIC_WINCE;
2851 return TRUE;
2852 break;
2853 #endif
2855 #ifdef SPARCMAGIC
2856 case bfd_arch_sparc:
2857 *magicp = SPARCMAGIC;
2858 #ifdef LYNXOS
2859 /* Just overwrite the usual value if we're doing Lynx. */
2860 *magicp = LYNXCOFFMAGIC;
2861 #endif
2862 return TRUE;
2863 break;
2864 #endif
2866 #ifdef H8500MAGIC
2867 case bfd_arch_h8500:
2868 *magicp = H8500MAGIC;
2869 return TRUE;
2870 break;
2871 #endif
2872 #ifdef A29K_MAGIC_BIG
2873 case bfd_arch_a29k:
2874 if (bfd_big_endian (abfd))
2875 *magicp = A29K_MAGIC_BIG;
2876 else
2877 *magicp = A29K_MAGIC_LITTLE;
2878 return TRUE;
2879 break;
2880 #endif
2882 #ifdef WE32KMAGIC
2883 case bfd_arch_we32k:
2884 *magicp = WE32KMAGIC;
2885 return TRUE;
2886 break;
2887 #endif
2889 #ifdef RS6000COFF_C
2890 case bfd_arch_rs6000:
2891 #ifndef PPCMAGIC
2892 case bfd_arch_powerpc:
2893 #endif
2894 BFD_ASSERT (bfd_get_flavour (abfd) == bfd_target_xcoff_flavour);
2895 *magicp = bfd_xcoff_magic_number (abfd);
2896 return TRUE;
2897 break;
2898 #endif
2900 #ifdef MCOREMAGIC
2901 case bfd_arch_mcore:
2902 * magicp = MCOREMAGIC;
2903 return TRUE;
2904 #endif
2906 #ifdef W65MAGIC
2907 case bfd_arch_w65:
2908 *magicp = W65MAGIC;
2909 return TRUE;
2910 #endif
2912 #ifdef OR32_MAGIC_BIG
2913 case bfd_arch_or32:
2914 if (bfd_big_endian (abfd))
2915 * magicp = OR32_MAGIC_BIG;
2916 else
2917 * magicp = OR32_MAGIC_LITTLE;
2918 return TRUE;
2919 #endif
2921 default: /* Unknown architecture. */
2922 /* Fall through to "return FALSE" below, to avoid
2923 "statement never reached" errors on the one below. */
2924 break;
2927 return FALSE;
2930 static bfd_boolean
2931 coff_set_arch_mach (abfd, arch, machine)
2932 bfd * abfd;
2933 enum bfd_architecture arch;
2934 unsigned long machine;
2936 unsigned dummy1;
2937 unsigned short dummy2;
2939 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2940 return FALSE;
2942 if (arch != bfd_arch_unknown
2943 && ! coff_set_flags (abfd, &dummy1, &dummy2))
2944 return FALSE; /* We can't represent this type */
2946 return TRUE; /* We're easy ... */
2949 #ifdef COFF_IMAGE_WITH_PE
2951 /* This is used to sort sections by VMA, as required by PE image
2952 files. */
2954 static int sort_by_secaddr PARAMS ((const PTR, const PTR));
2956 static int
2957 sort_by_secaddr (arg1, arg2)
2958 const PTR arg1;
2959 const PTR arg2;
2961 const asection *a = *(const asection **) arg1;
2962 const asection *b = *(const asection **) arg2;
2964 if (a->vma < b->vma)
2965 return -1;
2966 else if (a->vma > b->vma)
2967 return 1;
2968 else
2969 return 0;
2972 #endif /* COFF_IMAGE_WITH_PE */
2974 /* Calculate the file position for each section. */
2976 #ifndef I960
2977 #define ALIGN_SECTIONS_IN_FILE
2978 #endif
2979 #if defined(TIC80COFF) || defined(TICOFF)
2980 #undef ALIGN_SECTIONS_IN_FILE
2981 #endif
2983 static bfd_boolean
2984 coff_compute_section_file_positions (abfd)
2985 bfd * abfd;
2987 asection *current;
2988 asection *previous = (asection *) NULL;
2989 file_ptr sofar = bfd_coff_filhsz (abfd);
2990 bfd_boolean align_adjust;
2991 #ifdef ALIGN_SECTIONS_IN_FILE
2992 file_ptr old_sofar;
2993 #endif
2995 #ifdef RS6000COFF_C
2996 /* On XCOFF, if we have symbols, set up the .debug section. */
2997 if (bfd_get_symcount (abfd) > 0)
2999 bfd_size_type sz;
3000 bfd_size_type i, symcount;
3001 asymbol **symp;
3003 sz = 0;
3004 symcount = bfd_get_symcount (abfd);
3005 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
3007 coff_symbol_type *cf;
3009 cf = coff_symbol_from (abfd, *symp);
3010 if (cf != NULL
3011 && cf->native != NULL
3012 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
3014 size_t len;
3016 len = strlen (bfd_asymbol_name (*symp));
3017 if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd))
3018 sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd);
3021 if (sz > 0)
3023 asection *dsec;
3025 dsec = bfd_make_section_old_way (abfd, DOT_DEBUG);
3026 if (dsec == NULL)
3027 abort ();
3028 dsec->size = sz;
3029 dsec->flags |= SEC_HAS_CONTENTS;
3032 #endif
3034 #ifdef COFF_IMAGE_WITH_PE
3035 int page_size;
3036 if (coff_data (abfd)->link_info)
3038 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
3040 /* If no file alignment has been set, default to one.
3041 This repairs 'ld -r' for arm-wince-pe target. */
3042 if (page_size == 0)
3043 page_size = 1;
3045 else
3046 page_size = PE_DEF_FILE_ALIGNMENT;
3047 #else
3048 #ifdef COFF_PAGE_SIZE
3049 int page_size = COFF_PAGE_SIZE;
3050 #endif
3051 #endif
3053 if (bfd_get_start_address (abfd))
3055 /* A start address may have been added to the original file. In this
3056 case it will need an optional header to record it. */
3057 abfd->flags |= EXEC_P;
3060 if (abfd->flags & EXEC_P)
3061 sofar += bfd_coff_aoutsz (abfd);
3062 #ifdef RS6000COFF_C
3063 else if (xcoff_data (abfd)->full_aouthdr)
3064 sofar += bfd_coff_aoutsz (abfd);
3065 else
3066 sofar += SMALL_AOUTSZ;
3067 #endif
3069 sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
3071 #ifdef RS6000COFF_C
3072 /* XCOFF handles overflows in the reloc and line number count fields
3073 by allocating a new section header to hold the correct counts. */
3074 for (current = abfd->sections; current != NULL; current = current->next)
3075 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3076 sofar += bfd_coff_scnhsz (abfd);
3077 #endif
3079 #ifdef COFF_IMAGE_WITH_PE
3081 /* PE requires the sections to be in memory order when listed in
3082 the section headers. It also does not like empty loadable
3083 sections. The sections apparently do not have to be in the
3084 right order in the image file itself, but we do need to get the
3085 target_index values right. */
3087 unsigned int count;
3088 asection **section_list;
3089 unsigned int i;
3090 int target_index;
3091 bfd_size_type amt;
3093 count = 0;
3094 for (current = abfd->sections; current != NULL; current = current->next)
3095 ++count;
3097 /* We allocate an extra cell to simplify the final loop. */
3098 amt = sizeof (struct asection *) * (count + 1);
3099 section_list = bfd_malloc (amt);
3100 if (section_list == NULL)
3101 return FALSE;
3103 i = 0;
3104 for (current = abfd->sections; current != NULL; current = current->next)
3106 section_list[i] = current;
3107 ++i;
3109 section_list[i] = NULL;
3111 qsort (section_list, count, sizeof (asection *), sort_by_secaddr);
3113 /* Rethread the linked list into sorted order; at the same time,
3114 assign target_index values. */
3115 target_index = 1;
3116 abfd->sections = section_list[0];
3117 for (i = 0; i < count; i++)
3119 current = section_list[i];
3120 current->next = section_list[i + 1];
3122 /* Later, if the section has zero size, we'll be throwing it
3123 away, so we don't want to number it now. Note that having
3124 a zero size and having real contents are different
3125 concepts: .bss has no contents, but (usually) non-zero
3126 size. */
3127 if (current->size == 0)
3129 /* Discard. However, it still might have (valid) symbols
3130 in it, so arbitrarily set it to section 1 (indexing is
3131 1-based here; usually .text). __end__ and other
3132 contents of .endsection really have this happen.
3133 FIXME: This seems somewhat dubious. */
3134 current->target_index = 1;
3136 else
3137 current->target_index = target_index++;
3139 abfd->section_tail = &current->next;
3141 free (section_list);
3143 #else /* ! COFF_IMAGE_WITH_PE */
3145 /* Set the target_index field. */
3146 int target_index;
3148 target_index = 1;
3149 for (current = abfd->sections; current != NULL; current = current->next)
3150 current->target_index = target_index++;
3152 #endif /* ! COFF_IMAGE_WITH_PE */
3154 align_adjust = FALSE;
3155 for (current = abfd->sections;
3156 current != (asection *) NULL;
3157 current = current->next)
3159 #ifdef COFF_IMAGE_WITH_PE
3160 /* With PE we have to pad each section to be a multiple of its
3161 page size too, and remember both sizes. */
3162 if (coff_section_data (abfd, current) == NULL)
3164 bfd_size_type amt = sizeof (struct coff_section_tdata);
3165 current->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
3166 if (current->used_by_bfd == NULL)
3167 return FALSE;
3169 if (pei_section_data (abfd, current) == NULL)
3171 bfd_size_type amt = sizeof (struct pei_section_tdata);
3172 coff_section_data (abfd, current)->tdata
3173 = (PTR) bfd_zalloc (abfd, amt);
3174 if (coff_section_data (abfd, current)->tdata == NULL)
3175 return FALSE;
3177 if (pei_section_data (abfd, current)->virt_size == 0)
3178 pei_section_data (abfd, current)->virt_size = current->size;
3179 #endif
3181 /* Only deal with sections which have contents. */
3182 if (!(current->flags & SEC_HAS_CONTENTS))
3183 continue;
3185 #ifdef COFF_IMAGE_WITH_PE
3186 /* Make sure we skip empty sections in a PE image. */
3187 if (current->size == 0)
3188 continue;
3189 #endif
3191 /* Align the sections in the file to the same boundary on
3192 which they are aligned in virtual memory. I960 doesn't
3193 do this (FIXME) so we can stay in sync with Intel. 960
3194 doesn't yet page from files... */
3195 #ifdef ALIGN_SECTIONS_IN_FILE
3196 if ((abfd->flags & EXEC_P) != 0)
3198 /* Make sure this section is aligned on the right boundary - by
3199 padding the previous section up if necessary. */
3201 old_sofar = sofar;
3202 #ifdef RS6000COFF_C
3203 /* AIX loader checks the text section alignment of (vma - filepos)
3204 So even though the filepos may be aligned wrt the o_algntext, for
3205 AIX executables, this check fails. This shows up when a native
3206 AIX executable is stripped with gnu strip because the default vma
3207 of native is 0x10000150 but default for gnu is 0x10000140. Gnu
3208 stripped gnu excutable passes this check because the filepos is
3209 0x0140. This problem also show up with 64 bit shared objects. The
3210 data section must also be aligned. */
3211 if (!strcmp (current->name, _TEXT)
3212 || !strcmp (current->name, _DATA))
3214 bfd_vma pad;
3215 bfd_vma align;
3217 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3219 align = 1 << current->alignment_power;
3220 pad = abs (current->vma - sofar) % align;
3222 if (pad)
3224 pad = align - pad;
3225 sofar += pad;
3228 else
3229 #else
3231 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3233 #endif
3234 if (previous != (asection *) NULL)
3235 previous->size += sofar - old_sofar;
3238 #endif
3240 /* In demand paged files the low order bits of the file offset
3241 must match the low order bits of the virtual address. */
3242 #ifdef COFF_PAGE_SIZE
3243 if ((abfd->flags & D_PAGED) != 0
3244 && (current->flags & SEC_ALLOC) != 0)
3245 sofar += (current->vma - sofar) % page_size;
3246 #endif
3247 current->filepos = sofar;
3249 #ifdef COFF_IMAGE_WITH_PE
3250 /* Set the padded size. */
3251 current->size = (current->size + page_size -1) & -page_size;
3252 #endif
3254 sofar += current->size;
3256 #ifdef ALIGN_SECTIONS_IN_FILE
3257 /* Make sure that this section is of the right size too. */
3258 if ((abfd->flags & EXEC_P) == 0)
3260 bfd_size_type old_size;
3262 old_size = current->size;
3263 current->size = BFD_ALIGN (current->size,
3264 1 << current->alignment_power);
3265 align_adjust = current->size != old_size;
3266 sofar += current->size - old_size;
3268 else
3270 old_sofar = sofar;
3271 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3272 align_adjust = sofar != old_sofar;
3273 current->size += sofar - old_sofar;
3275 #endif
3277 #ifdef COFF_IMAGE_WITH_PE
3278 /* For PE we need to make sure we pad out to the aligned
3279 size, in case the caller only writes out data to the
3280 unaligned size. */
3281 if (pei_section_data (abfd, current)->virt_size < current->size)
3282 align_adjust = TRUE;
3283 #endif
3285 #ifdef _LIB
3286 /* Force .lib sections to start at zero. The vma is then
3287 incremented in coff_set_section_contents. This is right for
3288 SVR3.2. */
3289 if (strcmp (current->name, _LIB) == 0)
3290 bfd_set_section_vma (abfd, current, 0);
3291 #endif
3293 previous = current;
3296 /* It is now safe to write to the output file. If we needed an
3297 alignment adjustment for the last section, then make sure that
3298 there is a byte at offset sofar. If there are no symbols and no
3299 relocs, then nothing follows the last section. If we don't force
3300 the last byte out, then the file may appear to be truncated. */
3301 if (align_adjust)
3303 bfd_byte b;
3305 b = 0;
3306 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
3307 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
3308 return FALSE;
3311 /* Make sure the relocations are aligned. We don't need to make
3312 sure that this byte exists, because it will only matter if there
3313 really are relocs. */
3314 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
3316 obj_relocbase (abfd) = sofar;
3317 abfd->output_has_begun = TRUE;
3319 return TRUE;
3322 #if 0
3324 /* This can never work, because it is called too late--after the
3325 section positions have been set. I can't figure out what it is
3326 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3328 /* If .file, .text, .data, .bss symbols are missing, add them. */
3329 /* @@ Should we only be adding missing symbols, or overriding the aux
3330 values for existing section symbols? */
3331 static bfd_boolean
3332 coff_add_missing_symbols (abfd)
3333 bfd *abfd;
3335 unsigned int nsyms = bfd_get_symcount (abfd);
3336 asymbol **sympp = abfd->outsymbols;
3337 asymbol **sympp2;
3338 unsigned int i;
3339 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
3340 bfd_size_type amt;
3342 for (i = 0; i < nsyms; i++)
3344 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
3345 const char *name;
3347 if (csym)
3349 /* Only do this if there is a coff representation of the input
3350 symbol. */
3351 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
3353 need_file = 0;
3354 continue;
3356 name = csym->symbol.name;
3357 if (!name)
3358 continue;
3359 if (!strcmp (name, _TEXT))
3360 need_text = 0;
3361 #ifdef APOLLO_M68
3362 else if (!strcmp (name, ".wtext"))
3363 need_text = 0;
3364 #endif
3365 else if (!strcmp (name, _DATA))
3366 need_data = 0;
3367 else if (!strcmp (name, _BSS))
3368 need_bss = 0;
3371 /* Now i == bfd_get_symcount (abfd). */
3372 /* @@ For now, don't deal with .file symbol. */
3373 need_file = 0;
3375 if (!need_text && !need_data && !need_bss && !need_file)
3376 return TRUE;
3377 nsyms += need_text + need_data + need_bss + need_file;
3378 amt = nsyms;
3379 amt *= sizeof (asymbol *);
3380 sympp2 = (asymbol **) bfd_alloc (abfd, amt);
3381 if (!sympp2)
3382 return FALSE;
3383 memcpy (sympp2, sympp, i * sizeof (asymbol *));
3385 if (need_file)
3386 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3387 abort ();
3389 if (need_text)
3390 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
3391 if (need_data)
3392 sympp2[i++] = coff_section_symbol (abfd, _DATA);
3393 if (need_bss)
3394 sympp2[i++] = coff_section_symbol (abfd, _BSS);
3395 BFD_ASSERT (i == nsyms);
3396 bfd_set_symtab (abfd, sympp2, nsyms);
3397 return TRUE;
3400 #endif /* 0 */
3402 #ifdef COFF_IMAGE_WITH_PE
3404 static unsigned int pelength;
3405 static unsigned int peheader;
3407 static bfd_boolean
3408 coff_read_word (abfd, value)
3409 bfd *abfd;
3410 unsigned int *value;
3412 unsigned char b[2];
3413 int status;
3415 status = bfd_bread (b, (bfd_size_type) 2, abfd);
3416 if (status < 1)
3418 *value = 0;
3419 return FALSE;
3422 if (status == 1)
3423 *value = (unsigned int) b[0];
3424 else
3425 *value = (unsigned int) (b[0] + (b[1] << 8));
3427 pelength += (unsigned int) status;
3429 return TRUE;
3432 static unsigned int
3433 coff_compute_checksum (abfd)
3434 bfd *abfd;
3436 bfd_boolean more_data;
3437 file_ptr filepos;
3438 unsigned int value;
3439 unsigned int total;
3441 total = 0;
3442 pelength = 0;
3443 filepos = (file_ptr) 0;
3447 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
3448 return 0;
3450 more_data = coff_read_word (abfd, &value);
3451 total += value;
3452 total = 0xffff & (total + (total >> 0x10));
3453 filepos += 2;
3455 while (more_data);
3457 return (0xffff & (total + (total >> 0x10)));
3460 static bfd_boolean
3461 coff_apply_checksum (abfd)
3462 bfd *abfd;
3464 unsigned int computed;
3465 unsigned int checksum = 0;
3467 if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0)
3468 return FALSE;
3470 if (!coff_read_word (abfd, &peheader))
3471 return FALSE;
3473 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3474 return FALSE;
3476 checksum = 0;
3477 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3479 if (bfd_seek (abfd, peheader, SEEK_SET) != 0)
3480 return FALSE;
3482 computed = coff_compute_checksum (abfd);
3484 checksum = computed + pelength;
3486 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3487 return FALSE;
3489 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3491 return TRUE;
3494 #endif /* COFF_IMAGE_WITH_PE */
3496 /* SUPPRESS 558 */
3497 /* SUPPRESS 529 */
3498 static bfd_boolean
3499 coff_write_object_contents (abfd)
3500 bfd * abfd;
3502 asection *current;
3503 bfd_boolean hasrelocs = FALSE;
3504 bfd_boolean haslinno = FALSE;
3505 bfd_boolean hasdebug = FALSE;
3506 file_ptr scn_base;
3507 file_ptr reloc_base;
3508 file_ptr lineno_base;
3509 file_ptr sym_base;
3510 unsigned long reloc_size = 0, reloc_count = 0;
3511 unsigned long lnno_size = 0;
3512 bfd_boolean long_section_names;
3513 asection *text_sec = NULL;
3514 asection *data_sec = NULL;
3515 asection *bss_sec = NULL;
3516 struct internal_filehdr internal_f;
3517 struct internal_aouthdr internal_a;
3518 #ifdef COFF_LONG_SECTION_NAMES
3519 size_t string_size = STRING_SIZE_SIZE;
3520 #endif
3522 bfd_set_error (bfd_error_system_call);
3524 /* Make a pass through the symbol table to count line number entries and
3525 put them into the correct asections. */
3527 lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd);
3529 if (! abfd->output_has_begun)
3531 if (! coff_compute_section_file_positions (abfd))
3532 return FALSE;
3535 reloc_base = obj_relocbase (abfd);
3537 /* Work out the size of the reloc and linno areas. */
3539 for (current = abfd->sections; current != NULL; current =
3540 current->next)
3542 #ifdef COFF_WITH_PE
3543 /* We store the actual reloc count in the first reloc's addr. */
3544 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3545 reloc_count ++;
3546 #endif
3547 reloc_count += current->reloc_count;
3550 reloc_size = reloc_count * bfd_coff_relsz (abfd);
3552 lineno_base = reloc_base + reloc_size;
3553 sym_base = lineno_base + lnno_size;
3555 /* Indicate in each section->line_filepos its actual file address. */
3556 for (current = abfd->sections; current != NULL; current =
3557 current->next)
3559 if (current->lineno_count)
3561 current->line_filepos = lineno_base;
3562 current->moving_line_filepos = lineno_base;
3563 lineno_base += current->lineno_count * bfd_coff_linesz (abfd);
3565 else
3567 current->line_filepos = 0;
3569 if (current->reloc_count)
3571 current->rel_filepos = reloc_base;
3572 reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
3573 #ifdef COFF_WITH_PE
3574 /* Extra reloc to hold real count. */
3575 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3576 reloc_base += bfd_coff_relsz (abfd);
3577 #endif
3579 else
3581 current->rel_filepos = 0;
3585 /* Write section headers to the file. */
3586 internal_f.f_nscns = 0;
3588 if ((abfd->flags & EXEC_P) != 0)
3589 scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
3590 else
3592 scn_base = bfd_coff_filhsz (abfd);
3593 #ifdef RS6000COFF_C
3594 #ifndef XCOFF64
3595 if (xcoff_data (abfd)->full_aouthdr)
3596 scn_base += bfd_coff_aoutsz (abfd);
3597 else
3598 scn_base += SMALL_AOUTSZ;
3599 #endif
3600 #endif
3603 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
3604 return FALSE;
3606 long_section_names = FALSE;
3607 for (current = abfd->sections;
3608 current != NULL;
3609 current = current->next)
3611 struct internal_scnhdr section;
3612 bfd_boolean is_reloc_section = FALSE;
3614 #ifdef COFF_IMAGE_WITH_PE
3615 if (strcmp (current->name, ".reloc") == 0)
3617 is_reloc_section = TRUE;
3618 hasrelocs = TRUE;
3619 pe_data (abfd)->has_reloc_section = 1;
3621 #endif
3623 internal_f.f_nscns++;
3625 strncpy (section.s_name, current->name, SCNNMLEN);
3627 #ifdef COFF_LONG_SECTION_NAMES
3628 /* Handle long section names as in PE. This must be compatible
3629 with the code in coff_write_symbols and _bfd_coff_final_link. */
3631 size_t len;
3633 len = strlen (current->name);
3634 if (len > SCNNMLEN)
3636 memset (section.s_name, 0, SCNNMLEN);
3637 sprintf (section.s_name, "/%lu", (unsigned long) string_size);
3638 string_size += len + 1;
3639 long_section_names = TRUE;
3642 #endif
3644 #ifdef _LIB
3645 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3646 Ian Taylor <ian@cygnus.com>. */
3647 if (strcmp (current->name, _LIB) == 0)
3648 section.s_vaddr = 0;
3649 else
3650 #endif
3651 section.s_vaddr = current->vma;
3652 section.s_paddr = current->lma;
3653 section.s_size = current->size;
3654 #ifdef coff_get_section_load_page
3655 section.s_page = coff_get_section_load_page (current);
3656 #endif
3658 #ifdef COFF_WITH_PE
3659 section.s_paddr = 0;
3660 #endif
3661 #ifdef COFF_IMAGE_WITH_PE
3662 /* Reminder: s_paddr holds the virtual size of the section. */
3663 if (coff_section_data (abfd, current) != NULL
3664 && pei_section_data (abfd, current) != NULL)
3665 section.s_paddr = pei_section_data (abfd, current)->virt_size;
3666 else
3667 section.s_paddr = 0;
3668 #endif
3670 /* If this section has no size or is unloadable then the scnptr
3671 will be 0 too. */
3672 if (current->size == 0
3673 || (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
3674 section.s_scnptr = 0;
3675 else
3676 section.s_scnptr = current->filepos;
3678 section.s_relptr = current->rel_filepos;
3679 section.s_lnnoptr = current->line_filepos;
3680 section.s_nreloc = current->reloc_count;
3681 section.s_nlnno = current->lineno_count;
3682 #ifndef COFF_IMAGE_WITH_PE
3683 /* In PEI, relocs come in the .reloc section. */
3684 if (current->reloc_count != 0)
3685 hasrelocs = TRUE;
3686 #endif
3687 if (current->lineno_count != 0)
3688 haslinno = TRUE;
3689 if ((current->flags & SEC_DEBUGGING) != 0
3690 && ! is_reloc_section)
3691 hasdebug = TRUE;
3693 #ifdef RS6000COFF_C
3694 #ifndef XCOFF64
3695 /* Indicate the use of an XCOFF overflow section header. */
3696 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3698 section.s_nreloc = 0xffff;
3699 section.s_nlnno = 0xffff;
3701 #endif
3702 #endif
3704 section.s_flags = sec_to_styp_flags (current->name, current->flags);
3706 if (!strcmp (current->name, _TEXT))
3707 text_sec = current;
3708 else if (!strcmp (current->name, _DATA))
3709 data_sec = current;
3710 else if (!strcmp (current->name, _BSS))
3711 bss_sec = current;
3713 #ifdef I960
3714 section.s_align = (current->alignment_power
3715 ? 1 << current->alignment_power
3716 : 0);
3717 #endif
3718 #ifdef TIC80COFF
3719 /* TI COFF puts the alignment power in bits 8-11 of the flags. */
3720 section.s_flags |= (current->alignment_power & 0xF) << 8;
3721 #endif
3722 #ifdef COFF_ENCODE_ALIGNMENT
3723 COFF_ENCODE_ALIGNMENT(section, current->alignment_power);
3724 #endif
3726 #ifdef COFF_IMAGE_WITH_PE
3727 /* Suppress output of the sections if they are null. ld
3728 includes the bss and data sections even if there is no size
3729 assigned to them. NT loader doesn't like it if these section
3730 headers are included if the sections themselves are not
3731 needed. See also coff_compute_section_file_positions. */
3732 if (section.s_size == 0)
3733 internal_f.f_nscns--;
3734 else
3735 #endif
3737 SCNHDR buff;
3738 bfd_size_type amt = bfd_coff_scnhsz (abfd);
3740 if (coff_swap_scnhdr_out (abfd, &section, &buff) == 0
3741 || bfd_bwrite ((PTR) &buff, amt, abfd) != amt)
3742 return FALSE;
3745 #ifdef COFF_WITH_PE
3746 /* PE stores COMDAT section information in the symbol table. If
3747 this section is supposed to have some COMDAT info, track down
3748 the symbol in the symbol table and modify it. */
3749 if ((current->flags & SEC_LINK_ONCE) != 0)
3751 unsigned int i, count;
3752 asymbol **psym;
3753 coff_symbol_type *csym = NULL;
3754 asymbol **psymsec;
3756 psymsec = NULL;
3757 count = bfd_get_symcount (abfd);
3758 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
3760 if ((*psym)->section != current)
3761 continue;
3763 /* Remember the location of the first symbol in this
3764 section. */
3765 if (psymsec == NULL)
3766 psymsec = psym;
3768 /* See if this is the section symbol. */
3769 if (strcmp ((*psym)->name, current->name) == 0)
3771 csym = coff_symbol_from (abfd, *psym);
3772 if (csym == NULL
3773 || csym->native == NULL
3774 || csym->native->u.syment.n_numaux < 1
3775 || csym->native->u.syment.n_sclass != C_STAT
3776 || csym->native->u.syment.n_type != T_NULL)
3777 continue;
3779 /* Here *PSYM is the section symbol for CURRENT. */
3781 break;
3785 /* Did we find it?
3786 Note that we might not if we're converting the file from
3787 some other object file format. */
3788 if (i < count)
3790 combined_entry_type *aux;
3792 /* We don't touch the x_checksum field. The
3793 x_associated field is not currently supported. */
3795 aux = csym->native + 1;
3796 switch (current->flags & SEC_LINK_DUPLICATES)
3798 case SEC_LINK_DUPLICATES_DISCARD:
3799 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
3800 break;
3802 case SEC_LINK_DUPLICATES_ONE_ONLY:
3803 aux->u.auxent.x_scn.x_comdat =
3804 IMAGE_COMDAT_SELECT_NODUPLICATES;
3805 break;
3807 case SEC_LINK_DUPLICATES_SAME_SIZE:
3808 aux->u.auxent.x_scn.x_comdat =
3809 IMAGE_COMDAT_SELECT_SAME_SIZE;
3810 break;
3812 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
3813 aux->u.auxent.x_scn.x_comdat =
3814 IMAGE_COMDAT_SELECT_EXACT_MATCH;
3815 break;
3818 /* The COMDAT symbol must be the first symbol from this
3819 section in the symbol table. In order to make this
3820 work, we move the COMDAT symbol before the first
3821 symbol we found in the search above. It's OK to
3822 rearrange the symbol table at this point, because
3823 coff_renumber_symbols is going to rearrange it
3824 further and fix up all the aux entries. */
3825 if (psym != psymsec)
3827 asymbol *hold;
3828 asymbol **pcopy;
3830 hold = *psym;
3831 for (pcopy = psym; pcopy > psymsec; pcopy--)
3832 pcopy[0] = pcopy[-1];
3833 *psymsec = hold;
3837 #endif /* COFF_WITH_PE */
3840 #ifdef RS6000COFF_C
3841 #ifndef XCOFF64
3842 /* XCOFF handles overflows in the reloc and line number count fields
3843 by creating a new section header to hold the correct values. */
3844 for (current = abfd->sections; current != NULL; current = current->next)
3846 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3848 struct internal_scnhdr scnhdr;
3849 SCNHDR buff;
3850 bfd_size_type amt;
3852 internal_f.f_nscns++;
3853 strncpy (&(scnhdr.s_name[0]), current->name, 8);
3854 scnhdr.s_paddr = current->reloc_count;
3855 scnhdr.s_vaddr = current->lineno_count;
3856 scnhdr.s_size = 0;
3857 scnhdr.s_scnptr = 0;
3858 scnhdr.s_relptr = current->rel_filepos;
3859 scnhdr.s_lnnoptr = current->line_filepos;
3860 scnhdr.s_nreloc = current->target_index;
3861 scnhdr.s_nlnno = current->target_index;
3862 scnhdr.s_flags = STYP_OVRFLO;
3863 amt = bfd_coff_scnhsz (abfd);
3864 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
3865 || bfd_bwrite ((PTR) &buff, amt, abfd) != amt)
3866 return FALSE;
3869 #endif
3870 #endif
3872 /* OK, now set up the filehdr... */
3874 /* Don't include the internal abs section in the section count */
3876 /* We will NOT put a fucking timestamp in the header here. Every time you
3877 put it back, I will come in and take it out again. I'm sorry. This
3878 field does not belong here. We fill it with a 0 so it compares the
3879 same but is not a reasonable time. -- gnu@cygnus.com */
3880 internal_f.f_timdat = 0;
3881 internal_f.f_flags = 0;
3883 if (abfd->flags & EXEC_P)
3884 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3885 else
3887 internal_f.f_opthdr = 0;
3888 #ifdef RS6000COFF_C
3889 #ifndef XCOFF64
3890 if (xcoff_data (abfd)->full_aouthdr)
3891 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3892 else
3893 internal_f.f_opthdr = SMALL_AOUTSZ;
3894 #endif
3895 #endif
3898 if (!hasrelocs)
3899 internal_f.f_flags |= F_RELFLG;
3900 if (!haslinno)
3901 internal_f.f_flags |= F_LNNO;
3902 if (abfd->flags & EXEC_P)
3903 internal_f.f_flags |= F_EXEC;
3904 #ifdef COFF_IMAGE_WITH_PE
3905 if (! hasdebug)
3906 internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED;
3907 if (pe_data (abfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE)
3908 internal_f.f_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
3909 #endif
3911 #ifdef COFF_WITH_PE
3912 internal_f.f_flags |= IMAGE_FILE_32BIT_MACHINE;
3913 #else
3914 if (bfd_little_endian (abfd))
3915 internal_f.f_flags |= F_AR32WR;
3916 else
3917 internal_f.f_flags |= F_AR32W;
3918 #endif
3920 #ifdef TI_TARGET_ID
3921 /* Target id is used in TI COFF v1 and later; COFF0 won't use this field,
3922 but it doesn't hurt to set it internally. */
3923 internal_f.f_target_id = TI_TARGET_ID;
3924 #endif
3925 #ifdef TIC80_TARGET_ID
3926 internal_f.f_target_id = TIC80_TARGET_ID;
3927 #endif
3929 /* FIXME, should do something about the other byte orders and
3930 architectures. */
3932 #ifdef RS6000COFF_C
3933 if ((abfd->flags & DYNAMIC) != 0)
3934 internal_f.f_flags |= F_SHROBJ;
3935 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
3936 internal_f.f_flags |= F_DYNLOAD;
3937 #endif
3939 memset (&internal_a, 0, sizeof internal_a);
3941 /* Set up architecture-dependent stuff. */
3943 unsigned int magic = 0;
3944 unsigned short flags = 0;
3946 coff_set_flags (abfd, &magic, &flags);
3947 internal_f.f_magic = magic;
3948 internal_f.f_flags |= flags;
3949 /* ...and the "opt"hdr... */
3951 #ifdef A29K
3952 #ifdef ULTRA3 /* NYU's machine */
3953 /* FIXME: This is a bogus check. I really want to see if there
3954 is a .shbss or a .shdata section, if so then set the magic
3955 number to indicate a shared data executable. */
3956 if (internal_f.f_nscns >= 7)
3957 internal_a.magic = SHMAGIC; /* Shared magic. */
3958 else
3959 #endif /* ULTRA3 */
3960 internal_a.magic = NMAGIC; /* Assume separate i/d. */
3961 #define __A_MAGIC_SET__
3962 #endif /* A29K */
3963 #ifdef TICOFF_AOUT_MAGIC
3964 internal_a.magic = TICOFF_AOUT_MAGIC;
3965 #define __A_MAGIC_SET__
3966 #endif
3967 #ifdef TIC80COFF
3968 internal_a.magic = TIC80_ARCH_MAGIC;
3969 #define __A_MAGIC_SET__
3970 #endif /* TIC80 */
3971 #ifdef I860
3972 /* FIXME: What are the a.out magic numbers for the i860? */
3973 internal_a.magic = 0;
3974 #define __A_MAGIC_SET__
3975 #endif /* I860 */
3976 #ifdef I960
3977 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
3978 #define __A_MAGIC_SET__
3979 #endif /* I960 */
3980 #if M88
3981 #define __A_MAGIC_SET__
3982 internal_a.magic = PAGEMAGICBCS;
3983 #endif /* M88 */
3985 #if APOLLO_M68
3986 #define __A_MAGIC_SET__
3987 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
3988 #endif
3990 #if defined(M68) || defined(WE32K) || defined(M68K)
3991 #define __A_MAGIC_SET__
3992 #if defined(LYNXOS)
3993 internal_a.magic = LYNXCOFFMAGIC;
3994 #else
3995 #if defined(TARG_AUX)
3996 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
3997 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
3998 PAGEMAGICEXECSWAPPED);
3999 #else
4000 #if defined (PAGEMAGICPEXECPAGED)
4001 internal_a.magic = PAGEMAGICPEXECPAGED;
4002 #endif
4003 #endif /* TARG_AUX */
4004 #endif /* LYNXOS */
4005 #endif /* M68 || WE32K || M68K */
4007 #if defined(ARM)
4008 #define __A_MAGIC_SET__
4009 internal_a.magic = ZMAGIC;
4010 #endif
4012 #if defined(PPC_PE)
4013 #define __A_MAGIC_SET__
4014 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
4015 #endif
4017 #if defined MCORE_PE
4018 #define __A_MAGIC_SET__
4019 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
4020 #endif
4022 #if defined(I386)
4023 #define __A_MAGIC_SET__
4024 #if defined(LYNXOS)
4025 internal_a.magic = LYNXCOFFMAGIC;
4026 #else /* LYNXOS */
4027 internal_a.magic = ZMAGIC;
4028 #endif /* LYNXOS */
4029 #endif /* I386 */
4031 #if defined(IA64)
4032 #define __A_MAGIC_SET__
4033 internal_a.magic = ZMAGIC;
4034 #endif /* IA64 */
4036 #if defined(SPARC)
4037 #define __A_MAGIC_SET__
4038 #if defined(LYNXOS)
4039 internal_a.magic = LYNXCOFFMAGIC;
4040 #endif /* LYNXOS */
4041 #endif /* SPARC */
4043 #ifdef RS6000COFF_C
4044 #define __A_MAGIC_SET__
4045 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
4046 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
4047 RS6K_AOUTHDR_OMAGIC;
4048 #endif
4050 #if defined(SH) && defined(COFF_WITH_PE)
4051 #define __A_MAGIC_SET__
4052 internal_a.magic = SH_PE_MAGIC;
4053 #endif
4055 #if defined(MIPS) && defined(COFF_WITH_PE)
4056 #define __A_MAGIC_SET__
4057 internal_a.magic = MIPS_PE_MAGIC;
4058 #endif
4060 #ifdef OR32
4061 #define __A_MAGIC_SET__
4062 internal_a.magic = NMAGIC; /* Assume separate i/d. */
4063 #endif
4065 #ifndef __A_MAGIC_SET__
4066 #include "Your aouthdr magic number is not being set!"
4067 #else
4068 #undef __A_MAGIC_SET__
4069 #endif
4072 /* FIXME: Does anybody ever set this to another value? */
4073 internal_a.vstamp = 0;
4075 /* Now should write relocs, strings, syms. */
4076 obj_sym_filepos (abfd) = sym_base;
4078 if (bfd_get_symcount (abfd) != 0)
4080 int firstundef;
4081 #if 0
4082 if (!coff_add_missing_symbols (abfd))
4083 return FALSE;
4084 #endif
4085 if (!coff_renumber_symbols (abfd, &firstundef))
4086 return FALSE;
4087 coff_mangle_symbols (abfd);
4088 if (! coff_write_symbols (abfd))
4089 return FALSE;
4090 if (! coff_write_linenumbers (abfd))
4091 return FALSE;
4092 if (! coff_write_relocs (abfd, firstundef))
4093 return FALSE;
4095 #ifdef COFF_LONG_SECTION_NAMES
4096 else if (long_section_names && ! obj_coff_strings_written (abfd))
4098 /* If we have long section names we have to write out the string
4099 table even if there are no symbols. */
4100 if (! coff_write_symbols (abfd))
4101 return FALSE;
4103 #endif
4104 #ifdef COFF_IMAGE_WITH_PE
4105 #ifdef PPC_PE
4106 else if ((abfd->flags & EXEC_P) != 0)
4108 bfd_byte b;
4110 /* PowerPC PE appears to require that all executable files be
4111 rounded up to the page size. */
4112 b = 0;
4113 if (bfd_seek (abfd,
4114 (file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
4115 SEEK_SET) != 0
4116 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
4117 return FALSE;
4119 #endif
4120 #endif
4122 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
4123 backend linker, and obj_raw_syment_count is not valid until after
4124 coff_write_symbols is called. */
4125 if (obj_raw_syment_count (abfd) != 0)
4127 internal_f.f_symptr = sym_base;
4128 #ifdef RS6000COFF_C
4129 /* AIX appears to require that F_RELFLG not be set if there are
4130 local symbols but no relocations. */
4131 internal_f.f_flags &=~ F_RELFLG;
4132 #endif
4134 else
4136 if (long_section_names)
4137 internal_f.f_symptr = sym_base;
4138 else
4139 internal_f.f_symptr = 0;
4140 internal_f.f_flags |= F_LSYMS;
4143 if (text_sec)
4145 internal_a.tsize = text_sec->size;
4146 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
4148 if (data_sec)
4150 internal_a.dsize = data_sec->size;
4151 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
4153 if (bss_sec)
4155 internal_a.bsize = bss_sec->size;
4156 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
4157 internal_a.data_start = bss_sec->vma;
4160 internal_a.entry = bfd_get_start_address (abfd);
4161 internal_f.f_nsyms = obj_raw_syment_count (abfd);
4163 #ifdef RS6000COFF_C
4164 if (xcoff_data (abfd)->full_aouthdr)
4166 bfd_vma toc;
4167 asection *loader_sec;
4169 internal_a.vstamp = 1;
4171 internal_a.o_snentry = xcoff_data (abfd)->snentry;
4172 if (internal_a.o_snentry == 0)
4173 internal_a.entry = (bfd_vma) -1;
4175 if (text_sec != NULL)
4177 internal_a.o_sntext = text_sec->target_index;
4178 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
4180 else
4182 internal_a.o_sntext = 0;
4183 internal_a.o_algntext = 0;
4185 if (data_sec != NULL)
4187 internal_a.o_sndata = data_sec->target_index;
4188 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
4190 else
4192 internal_a.o_sndata = 0;
4193 internal_a.o_algndata = 0;
4195 loader_sec = bfd_get_section_by_name (abfd, ".loader");
4196 if (loader_sec != NULL)
4197 internal_a.o_snloader = loader_sec->target_index;
4198 else
4199 internal_a.o_snloader = 0;
4200 if (bss_sec != NULL)
4201 internal_a.o_snbss = bss_sec->target_index;
4202 else
4203 internal_a.o_snbss = 0;
4205 toc = xcoff_data (abfd)->toc;
4206 internal_a.o_toc = toc;
4207 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
4209 internal_a.o_modtype = xcoff_data (abfd)->modtype;
4210 if (xcoff_data (abfd)->cputype != -1)
4211 internal_a.o_cputype = xcoff_data (abfd)->cputype;
4212 else
4214 switch (bfd_get_arch (abfd))
4216 case bfd_arch_rs6000:
4217 internal_a.o_cputype = 4;
4218 break;
4219 case bfd_arch_powerpc:
4220 if (bfd_get_mach (abfd) == bfd_mach_ppc)
4221 internal_a.o_cputype = 3;
4222 else
4223 internal_a.o_cputype = 1;
4224 break;
4225 default:
4226 abort ();
4229 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
4230 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
4232 #endif
4234 /* now write them */
4235 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
4236 return FALSE;
4239 char * buff;
4240 bfd_size_type amount = bfd_coff_filhsz (abfd);
4242 buff = bfd_malloc (amount);
4243 if (buff == NULL)
4244 return FALSE;
4246 bfd_coff_swap_filehdr_out (abfd, (PTR) &internal_f, (PTR) buff);
4247 amount = bfd_bwrite ((PTR) buff, amount, abfd);
4249 free (buff);
4251 if (amount != bfd_coff_filhsz (abfd))
4252 return FALSE;
4255 if (abfd->flags & EXEC_P)
4257 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
4258 include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)). */
4259 char * buff;
4260 bfd_size_type amount = bfd_coff_aoutsz (abfd);
4262 buff = bfd_malloc (amount);
4263 if (buff == NULL)
4264 return FALSE;
4266 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) buff);
4267 amount = bfd_bwrite ((PTR) buff, amount, abfd);
4269 free (buff);
4271 if (amount != bfd_coff_aoutsz (abfd))
4272 return FALSE;
4274 #ifdef COFF_IMAGE_WITH_PE
4275 if (! coff_apply_checksum (abfd))
4276 return FALSE;
4277 #endif
4279 #ifdef RS6000COFF_C
4280 else
4282 AOUTHDR buff;
4283 size_t size;
4285 /* XCOFF seems to always write at least a small a.out header. */
4286 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff);
4287 if (xcoff_data (abfd)->full_aouthdr)
4288 size = bfd_coff_aoutsz (abfd);
4289 else
4290 size = SMALL_AOUTSZ;
4291 if (bfd_bwrite ((PTR) &buff, (bfd_size_type) size, abfd) != size)
4292 return FALSE;
4294 #endif
4296 return TRUE;
4299 static bfd_boolean
4300 coff_set_section_contents (abfd, section, location, offset, count)
4301 bfd * abfd;
4302 sec_ptr section;
4303 const PTR location;
4304 file_ptr offset;
4305 bfd_size_type count;
4307 if (! abfd->output_has_begun) /* Set by bfd.c handler. */
4309 if (! coff_compute_section_file_positions (abfd))
4310 return FALSE;
4313 #if defined(_LIB) && !defined(TARG_AUX)
4315 /* The physical address field of a .lib section is used to hold the
4316 number of shared libraries in the section. This code counts the
4317 number of sections being written, and increments the lma field
4318 with the number.
4320 I have found no documentation on the contents of this section.
4321 Experimentation indicates that the section contains zero or more
4322 records, each of which has the following structure:
4324 - a (four byte) word holding the length of this record, in words,
4325 - a word that always seems to be set to "2",
4326 - the path to a shared library, null-terminated and then padded
4327 to a whole word boundary.
4329 bfd_assert calls have been added to alert if an attempt is made
4330 to write a section which doesn't follow these assumptions. The
4331 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4332 <robertl@arnet.com> (Thanks!).
4334 Gvran Uddeborg <gvran@uddeborg.pp.se>. */
4336 if (strcmp (section->name, _LIB) == 0)
4338 bfd_byte *rec, *recend;
4340 rec = (bfd_byte *) location;
4341 recend = rec + count;
4342 while (rec < recend)
4344 ++section->lma;
4345 rec += bfd_get_32 (abfd, rec) * 4;
4348 BFD_ASSERT (rec == recend);
4351 #endif
4353 /* Don't write out bss sections - one way to do this is to
4354 see if the filepos has not been set. */
4355 if (section->filepos == 0)
4356 return TRUE;
4358 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
4359 return FALSE;
4361 if (count == 0)
4362 return TRUE;
4364 return bfd_bwrite (location, count, abfd) == count;
4366 #if 0
4367 static bfd_boolean
4368 coff_close_and_cleanup (abfd)
4369 bfd *abfd;
4371 if (!bfd_read_p (abfd))
4372 switch (abfd->format)
4374 case bfd_archive:
4375 if (!_bfd_write_archive_contents (abfd))
4376 return FALSE;
4377 break;
4378 case bfd_object:
4379 if (!coff_write_object_contents (abfd))
4380 return FALSE;
4381 break;
4382 default:
4383 bfd_set_error (bfd_error_invalid_operation);
4384 return FALSE;
4387 /* We depend on bfd_close to free all the memory on the objalloc. */
4388 return TRUE;
4391 #endif
4393 static PTR
4394 buy_and_read (abfd, where, size)
4395 bfd *abfd;
4396 file_ptr where;
4397 bfd_size_type size;
4399 PTR area = (PTR) bfd_alloc (abfd, size);
4400 if (!area)
4401 return (NULL);
4402 if (bfd_seek (abfd, where, SEEK_SET) != 0
4403 || bfd_bread (area, size, abfd) != size)
4404 return (NULL);
4405 return (area);
4406 } /* buy_and_read() */
4409 SUBSUBSECTION
4410 Reading linenumbers
4412 Creating the linenumber table is done by reading in the entire
4413 coff linenumber table, and creating another table for internal use.
4415 A coff linenumber table is structured so that each function
4416 is marked as having a line number of 0. Each line within the
4417 function is an offset from the first line in the function. The
4418 base of the line number information for the table is stored in
4419 the symbol associated with the function.
4421 Note: The PE format uses line number 0 for a flag indicating a
4422 new source file.
4424 The information is copied from the external to the internal
4425 table, and each symbol which marks a function is marked by
4426 pointing its...
4428 How does this work ?
4432 static bfd_boolean
4433 coff_slurp_line_table (abfd, asect)
4434 bfd *abfd;
4435 asection *asect;
4437 LINENO *native_lineno;
4438 alent *lineno_cache;
4439 bfd_size_type amt;
4441 BFD_ASSERT (asect->lineno == (alent *) NULL);
4443 amt = (bfd_size_type) bfd_coff_linesz (abfd) * asect->lineno_count;
4444 native_lineno = (LINENO *) buy_and_read (abfd, asect->line_filepos, amt);
4445 if (native_lineno == NULL)
4447 (*_bfd_error_handler)
4448 (_("%B: warning: line number table read failed"), abfd);
4449 return FALSE;
4451 amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent);
4452 lineno_cache = (alent *) bfd_alloc (abfd, amt);
4453 if (lineno_cache == NULL)
4454 return FALSE;
4455 else
4457 unsigned int counter = 0;
4458 alent *cache_ptr = lineno_cache;
4459 LINENO *src = native_lineno;
4461 while (counter < asect->lineno_count)
4463 struct internal_lineno dst;
4465 bfd_coff_swap_lineno_in (abfd, src, &dst);
4466 cache_ptr->line_number = dst.l_lnno;
4468 if (cache_ptr->line_number == 0)
4470 bfd_boolean warned;
4471 bfd_signed_vma symndx;
4472 coff_symbol_type *sym;
4474 warned = FALSE;
4475 symndx = dst.l_addr.l_symndx;
4476 if (symndx < 0
4477 || (bfd_vma) symndx >= obj_raw_syment_count (abfd))
4479 (*_bfd_error_handler)
4480 (_("%B: warning: illegal symbol index %ld in line numbers"),
4481 abfd, dst.l_addr.l_symndx);
4482 symndx = 0;
4483 warned = TRUE;
4485 /* FIXME: We should not be casting between ints and
4486 pointers like this. */
4487 sym = ((coff_symbol_type *)
4488 ((symndx + obj_raw_syments (abfd))
4489 ->u.syment._n._n_n._n_zeroes));
4490 cache_ptr->u.sym = (asymbol *) sym;
4491 if (sym->lineno != NULL && ! warned)
4493 (*_bfd_error_handler)
4494 (_("%B: warning: duplicate line number information for `%s'"),
4495 abfd, bfd_asymbol_name (&sym->symbol));
4497 sym->lineno = cache_ptr;
4499 else
4501 cache_ptr->u.offset = dst.l_addr.l_paddr
4502 - bfd_section_vma (abfd, asect);
4503 } /* If no linenumber expect a symbol index */
4505 cache_ptr++;
4506 src++;
4507 counter++;
4509 cache_ptr->line_number = 0;
4512 asect->lineno = lineno_cache;
4513 /* FIXME, free native_lineno here, or use alloca or something. */
4514 return TRUE;
4517 /* Slurp in the symbol table, converting it to generic form. Note
4518 that if coff_relocate_section is defined, the linker will read
4519 symbols via coff_link_add_symbols, rather than via this routine. */
4521 static bfd_boolean
4522 coff_slurp_symbol_table (abfd)
4523 bfd * abfd;
4525 combined_entry_type *native_symbols;
4526 coff_symbol_type *cached_area;
4527 unsigned int *table_ptr;
4528 bfd_size_type amt;
4529 unsigned int number_of_symbols = 0;
4531 if (obj_symbols (abfd))
4532 return TRUE;
4534 /* Read in the symbol table. */
4535 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
4536 return FALSE;
4538 /* Allocate enough room for all the symbols in cached form. */
4539 amt = obj_raw_syment_count (abfd);
4540 amt *= sizeof (coff_symbol_type);
4541 cached_area = (coff_symbol_type *) bfd_alloc (abfd, amt);
4542 if (cached_area == NULL)
4543 return FALSE;
4545 amt = obj_raw_syment_count (abfd);
4546 amt *= sizeof (unsigned int);
4547 table_ptr = (unsigned int *) bfd_alloc (abfd, amt);
4549 if (table_ptr == NULL)
4550 return FALSE;
4551 else
4553 coff_symbol_type *dst = cached_area;
4554 unsigned int last_native_index = obj_raw_syment_count (abfd);
4555 unsigned int this_index = 0;
4557 while (this_index < last_native_index)
4559 combined_entry_type *src = native_symbols + this_index;
4560 table_ptr[this_index] = number_of_symbols;
4561 dst->symbol.the_bfd = abfd;
4563 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
4564 /* We use the native name field to point to the cached field. */
4565 src->u.syment._n._n_n._n_zeroes = (long) dst;
4566 dst->symbol.section = coff_section_from_bfd_index (abfd,
4567 src->u.syment.n_scnum);
4568 dst->symbol.flags = 0;
4569 dst->done_lineno = FALSE;
4571 switch (src->u.syment.n_sclass)
4573 #ifdef I960
4574 case C_LEAFEXT:
4575 #if 0
4576 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
4577 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4578 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4579 #endif
4580 /* Fall through to next case. */
4581 #endif
4583 case C_EXT:
4584 case C_WEAKEXT:
4585 #if defined ARM
4586 case C_THUMBEXT:
4587 case C_THUMBEXTFUNC:
4588 #endif
4589 #ifdef RS6000COFF_C
4590 case C_HIDEXT:
4591 #endif
4592 #ifdef C_SYSTEM
4593 case C_SYSTEM: /* System Wide variable. */
4594 #endif
4595 #ifdef COFF_WITH_PE
4596 /* In PE, 0x68 (104) denotes a section symbol. */
4597 case C_SECTION:
4598 /* In PE, 0x69 (105) denotes a weak external symbol. */
4599 case C_NT_WEAK:
4600 #endif
4601 switch (coff_classify_symbol (abfd, &src->u.syment))
4603 case COFF_SYMBOL_GLOBAL:
4604 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4605 #if defined COFF_WITH_PE
4606 /* PE sets the symbol to a value relative to the
4607 start of the section. */
4608 dst->symbol.value = src->u.syment.n_value;
4609 #else
4610 dst->symbol.value = (src->u.syment.n_value
4611 - dst->symbol.section->vma);
4612 #endif
4613 if (ISFCN ((src->u.syment.n_type)))
4615 /* A function ext does not go at the end of a
4616 file. */
4617 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4619 break;
4621 case COFF_SYMBOL_COMMON:
4622 dst->symbol.section = bfd_com_section_ptr;
4623 dst->symbol.value = src->u.syment.n_value;
4624 break;
4626 case COFF_SYMBOL_UNDEFINED:
4627 dst->symbol.section = bfd_und_section_ptr;
4628 dst->symbol.value = 0;
4629 break;
4631 case COFF_SYMBOL_PE_SECTION:
4632 dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM;
4633 dst->symbol.value = 0;
4634 break;
4636 case COFF_SYMBOL_LOCAL:
4637 dst->symbol.flags = BSF_LOCAL;
4638 #if defined COFF_WITH_PE
4639 /* PE sets the symbol to a value relative to the
4640 start of the section. */
4641 dst->symbol.value = src->u.syment.n_value;
4642 #else
4643 dst->symbol.value = (src->u.syment.n_value
4644 - dst->symbol.section->vma);
4645 #endif
4646 if (ISFCN ((src->u.syment.n_type)))
4647 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4648 break;
4651 #ifdef RS6000COFF_C
4652 /* A symbol with a csect entry should not go at the end. */
4653 if (src->u.syment.n_numaux > 0)
4654 dst->symbol.flags |= BSF_NOT_AT_END;
4655 #endif
4657 #ifdef COFF_WITH_PE
4658 if (src->u.syment.n_sclass == C_NT_WEAK)
4659 dst->symbol.flags |= BSF_WEAK;
4661 if (src->u.syment.n_sclass == C_SECTION
4662 && src->u.syment.n_scnum > 0)
4663 dst->symbol.flags = BSF_LOCAL;
4664 #endif
4665 if (src->u.syment.n_sclass == C_WEAKEXT)
4666 dst->symbol.flags |= BSF_WEAK;
4668 break;
4670 case C_STAT: /* Static. */
4671 #ifdef I960
4672 case C_LEAFSTAT: /* Static leaf procedure. */
4673 #endif
4674 #if defined ARM
4675 case C_THUMBSTAT: /* Thumb static. */
4676 case C_THUMBLABEL: /* Thumb label. */
4677 case C_THUMBSTATFUNC:/* Thumb static function. */
4678 #endif
4679 case C_LABEL: /* Label. */
4680 if (src->u.syment.n_scnum == N_DEBUG)
4681 dst->symbol.flags = BSF_DEBUGGING;
4682 else
4683 dst->symbol.flags = BSF_LOCAL;
4685 /* Base the value as an index from the base of the
4686 section, if there is one. */
4687 if (dst->symbol.section)
4689 #if defined COFF_WITH_PE
4690 /* PE sets the symbol to a value relative to the
4691 start of the section. */
4692 dst->symbol.value = src->u.syment.n_value;
4693 #else
4694 dst->symbol.value = (src->u.syment.n_value
4695 - dst->symbol.section->vma);
4696 #endif
4698 else
4699 dst->symbol.value = src->u.syment.n_value;
4700 break;
4702 case C_MOS: /* Member of structure. */
4703 case C_EOS: /* End of structure. */
4704 #ifdef NOTDEF /* C_AUTOARG has the same value. */
4705 #ifdef C_GLBLREG
4706 case C_GLBLREG: /* A29k-specific storage class. */
4707 #endif
4708 #endif
4709 case C_REGPARM: /* Register parameter. */
4710 case C_REG: /* register variable. */
4711 /* C_AUTOARG conflicts with TI COFF C_UEXT. */
4712 #if !defined (TIC80COFF) && !defined (TICOFF)
4713 #ifdef C_AUTOARG
4714 case C_AUTOARG: /* 960-specific storage class. */
4715 #endif
4716 #endif
4717 case C_TPDEF: /* Type definition. */
4718 case C_ARG:
4719 case C_AUTO: /* Automatic variable. */
4720 case C_FIELD: /* Bit field. */
4721 case C_ENTAG: /* Enumeration tag. */
4722 case C_MOE: /* Member of enumeration. */
4723 case C_MOU: /* Member of union. */
4724 case C_UNTAG: /* Union tag. */
4725 dst->symbol.flags = BSF_DEBUGGING;
4726 dst->symbol.value = (src->u.syment.n_value);
4727 break;
4729 case C_FILE: /* File name. */
4730 case C_STRTAG: /* Structure tag. */
4731 #ifdef RS6000COFF_C
4732 case C_GSYM:
4733 case C_LSYM:
4734 case C_PSYM:
4735 case C_RSYM:
4736 case C_RPSYM:
4737 case C_STSYM:
4738 case C_TCSYM:
4739 case C_BCOMM:
4740 case C_ECOML:
4741 case C_ECOMM:
4742 case C_DECL:
4743 case C_ENTRY:
4744 case C_FUN:
4745 case C_ESTAT:
4746 #endif
4747 dst->symbol.flags = BSF_DEBUGGING;
4748 dst->symbol.value = (src->u.syment.n_value);
4749 break;
4751 #ifdef RS6000COFF_C
4752 case C_BINCL: /* Beginning of include file. */
4753 case C_EINCL: /* Ending of include file. */
4754 /* The value is actually a pointer into the line numbers
4755 of the file. We locate the line number entry, and
4756 set the section to the section which contains it, and
4757 the value to the index in that section. */
4759 asection *sec;
4761 dst->symbol.flags = BSF_DEBUGGING;
4762 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4763 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
4764 && ((file_ptr) (sec->line_filepos
4765 + sec->lineno_count * bfd_coff_linesz (abfd))
4766 > (file_ptr) src->u.syment.n_value))
4767 break;
4768 if (sec == NULL)
4769 dst->symbol.value = 0;
4770 else
4772 dst->symbol.section = sec;
4773 dst->symbol.value = ((src->u.syment.n_value
4774 - sec->line_filepos)
4775 / bfd_coff_linesz (abfd));
4776 src->fix_line = 1;
4779 break;
4781 case C_BSTAT:
4782 dst->symbol.flags = BSF_DEBUGGING;
4784 /* The value is actually a symbol index. Save a pointer
4785 to the symbol instead of the index. FIXME: This
4786 should use a union. */
4787 src->u.syment.n_value =
4788 (long) (native_symbols + src->u.syment.n_value);
4789 dst->symbol.value = src->u.syment.n_value;
4790 src->fix_value = 1;
4791 break;
4792 #endif
4794 case C_BLOCK: /* ".bb" or ".eb". */
4795 case C_FCN: /* ".bf" or ".ef" (or PE ".lf"). */
4796 case C_EFCN: /* Physical end of function. */
4797 #if defined COFF_WITH_PE
4798 /* PE sets the symbol to a value relative to the start
4799 of the section. */
4800 dst->symbol.value = src->u.syment.n_value;
4801 if (strcmp (dst->symbol.name, ".bf") != 0)
4803 /* PE uses funny values for .ef and .lf; don't
4804 relocate them. */
4805 dst->symbol.flags = BSF_DEBUGGING;
4807 else
4808 dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC;
4809 #else
4810 /* Base the value as an index from the base of the
4811 section. */
4812 dst->symbol.flags = BSF_LOCAL;
4813 dst->symbol.value = (src->u.syment.n_value
4814 - dst->symbol.section->vma);
4815 #endif
4816 break;
4818 case C_STATLAB: /* Static load time label. */
4819 dst->symbol.value = src->u.syment.n_value;
4820 dst->symbol.flags = BSF_GLOBAL;
4821 break;
4823 case C_NULL:
4824 /* PE DLLs sometimes have zeroed out symbols for some
4825 reason. Just ignore them without a warning. */
4826 if (src->u.syment.n_type == 0
4827 && src->u.syment.n_value == 0
4828 && src->u.syment.n_scnum == 0)
4829 break;
4830 /* Fall through. */
4831 case C_EXTDEF: /* External definition. */
4832 case C_ULABEL: /* Undefined label. */
4833 case C_USTATIC: /* Undefined static. */
4834 #ifndef COFF_WITH_PE
4835 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4836 class to represent a section symbol. */
4837 case C_LINE: /* line # reformatted as symbol table entry. */
4838 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4839 case C_ALIAS: /* Duplicate tag. */
4840 #endif
4841 /* New storage classes for TI COFF. */
4842 #if defined(TIC80COFF) || defined(TICOFF)
4843 case C_UEXT: /* Tentative external definition. */
4844 #endif
4845 case C_EXTLAB: /* External load time label. */
4846 case C_HIDDEN: /* Ext symbol in dmert public lib. */
4847 default:
4848 (*_bfd_error_handler)
4849 (_("%B: Unrecognized storage class %d for %s symbol `%s'"),
4850 abfd, src->u.syment.n_sclass,
4851 dst->symbol.section->name, dst->symbol.name);
4852 dst->symbol.flags = BSF_DEBUGGING;
4853 dst->symbol.value = (src->u.syment.n_value);
4854 break;
4857 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4859 dst->native = src;
4861 dst->symbol.udata.i = 0;
4862 dst->lineno = (alent *) NULL;
4863 this_index += (src->u.syment.n_numaux) + 1;
4864 dst++;
4865 number_of_symbols++;
4869 obj_symbols (abfd) = cached_area;
4870 obj_raw_syments (abfd) = native_symbols;
4872 bfd_get_symcount (abfd) = number_of_symbols;
4873 obj_convert (abfd) = table_ptr;
4874 /* Slurp the line tables for each section too. */
4876 asection *p;
4878 p = abfd->sections;
4879 while (p)
4881 coff_slurp_line_table (abfd, p);
4882 p = p->next;
4886 return TRUE;
4887 } /* coff_slurp_symbol_table() */
4889 /* Classify a COFF symbol. A couple of targets have globally visible
4890 symbols which are not class C_EXT, and this handles those. It also
4891 recognizes some special PE cases. */
4893 static enum coff_symbol_classification
4894 coff_classify_symbol (abfd, syment)
4895 bfd *abfd;
4896 struct internal_syment *syment;
4898 /* FIXME: This partially duplicates the switch in
4899 coff_slurp_symbol_table. */
4900 switch (syment->n_sclass)
4902 case C_EXT:
4903 case C_WEAKEXT:
4904 #ifdef I960
4905 case C_LEAFEXT:
4906 #endif
4907 #ifdef ARM
4908 case C_THUMBEXT:
4909 case C_THUMBEXTFUNC:
4910 #endif
4911 #ifdef C_SYSTEM
4912 case C_SYSTEM:
4913 #endif
4914 #ifdef COFF_WITH_PE
4915 case C_NT_WEAK:
4916 #endif
4917 if (syment->n_scnum == 0)
4919 if (syment->n_value == 0)
4920 return COFF_SYMBOL_UNDEFINED;
4921 else
4922 return COFF_SYMBOL_COMMON;
4924 return COFF_SYMBOL_GLOBAL;
4926 default:
4927 break;
4930 #ifdef COFF_WITH_PE
4931 if (syment->n_sclass == C_STAT)
4933 if (syment->n_scnum == 0)
4935 /* The Microsoft compiler sometimes generates these if a
4936 small static function is inlined every time it is used.
4937 The function is discarded, but the symbol table entry
4938 remains. */
4939 return COFF_SYMBOL_LOCAL;
4942 #ifdef STRICT_PE_FORMAT
4943 /* This is correct for Microsoft generated objects, but it
4944 breaks gas generated objects. */
4946 if (syment->n_value == 0)
4948 asection *sec;
4949 char buf[SYMNMLEN + 1];
4951 sec = coff_section_from_bfd_index (abfd, syment->n_scnum);
4952 if (sec != NULL
4953 && (strcmp (bfd_get_section_name (abfd, sec),
4954 _bfd_coff_internal_syment_name (abfd, syment, buf))
4955 == 0))
4956 return COFF_SYMBOL_PE_SECTION;
4958 #endif
4960 return COFF_SYMBOL_LOCAL;
4963 if (syment->n_sclass == C_SECTION)
4965 /* In some cases in a DLL generated by the Microsoft linker, the
4966 n_value field will contain garbage. FIXME: This should
4967 probably be handled by the swapping function instead. */
4968 syment->n_value = 0;
4969 if (syment->n_scnum == 0)
4970 return COFF_SYMBOL_UNDEFINED;
4971 return COFF_SYMBOL_PE_SECTION;
4973 #endif /* COFF_WITH_PE */
4975 /* If it is not a global symbol, we presume it is a local symbol. */
4977 if (syment->n_scnum == 0)
4979 char buf[SYMNMLEN + 1];
4981 (*_bfd_error_handler)
4982 (_("warning: %B: local symbol `%s' has no section"),
4983 abfd, _bfd_coff_internal_syment_name (abfd, syment, buf));
4986 return COFF_SYMBOL_LOCAL;
4990 SUBSUBSECTION
4991 Reading relocations
4993 Coff relocations are easily transformed into the internal BFD form
4994 (@code{arelent}).
4996 Reading a coff relocation table is done in the following stages:
4998 o Read the entire coff relocation table into memory.
5000 o Process each relocation in turn; first swap it from the
5001 external to the internal form.
5003 o Turn the symbol referenced in the relocation's symbol index
5004 into a pointer into the canonical symbol table.
5005 This table is the same as the one returned by a call to
5006 @code{bfd_canonicalize_symtab}. The back end will call that
5007 routine and save the result if a canonicalization hasn't been done.
5009 o The reloc index is turned into a pointer to a howto
5010 structure, in a back end specific way. For instance, the 386
5011 and 960 use the @code{r_type} to directly produce an index
5012 into a howto table vector; the 88k subtracts a number from the
5013 @code{r_type} field and creates an addend field.
5017 #ifndef CALC_ADDEND
5018 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
5020 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
5021 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
5022 coffsym = (obj_symbols (abfd) \
5023 + (cache_ptr->sym_ptr_ptr - symbols)); \
5024 else if (ptr) \
5025 coffsym = coff_symbol_from (abfd, ptr); \
5026 if (coffsym != (coff_symbol_type *) NULL \
5027 && coffsym->native->u.syment.n_scnum == 0) \
5028 cache_ptr->addend = 0; \
5029 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
5030 && ptr->section != (asection *) NULL) \
5031 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
5032 else \
5033 cache_ptr->addend = 0; \
5035 #endif
5037 static bfd_boolean
5038 coff_slurp_reloc_table (abfd, asect, symbols)
5039 bfd * abfd;
5040 sec_ptr asect;
5041 asymbol ** symbols;
5043 RELOC *native_relocs;
5044 arelent *reloc_cache;
5045 arelent *cache_ptr;
5046 unsigned int idx;
5047 bfd_size_type amt;
5049 if (asect->relocation)
5050 return TRUE;
5051 if (asect->reloc_count == 0)
5052 return TRUE;
5053 if (asect->flags & SEC_CONSTRUCTOR)
5054 return TRUE;
5055 if (!coff_slurp_symbol_table (abfd))
5056 return FALSE;
5057 amt = (bfd_size_type) bfd_coff_relsz (abfd) * asect->reloc_count;
5058 native_relocs = (RELOC *) buy_and_read (abfd, asect->rel_filepos, amt);
5059 amt = (bfd_size_type) asect->reloc_count * sizeof (arelent);
5060 reloc_cache = (arelent *) bfd_alloc (abfd, amt);
5062 if (reloc_cache == NULL)
5063 return FALSE;
5065 for (idx = 0; idx < asect->reloc_count; idx++)
5067 struct internal_reloc dst;
5068 struct external_reloc *src;
5069 #ifndef RELOC_PROCESSING
5070 asymbol *ptr;
5071 #endif
5073 cache_ptr = reloc_cache + idx;
5074 src = native_relocs + idx;
5076 coff_swap_reloc_in (abfd, src, &dst);
5078 #ifdef RELOC_PROCESSING
5079 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
5080 #else
5081 cache_ptr->address = dst.r_vaddr;
5083 if (dst.r_symndx != -1)
5085 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
5087 (*_bfd_error_handler)
5088 (_("%B: warning: illegal symbol index %ld in relocs"),
5089 abfd, dst.r_symndx);
5090 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5091 ptr = NULL;
5093 else
5095 cache_ptr->sym_ptr_ptr = (symbols
5096 + obj_convert (abfd)[dst.r_symndx]);
5097 ptr = *(cache_ptr->sym_ptr_ptr);
5100 else
5102 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5103 ptr = NULL;
5106 /* The symbols definitions that we have read in have been
5107 relocated as if their sections started at 0. But the offsets
5108 refering to the symbols in the raw data have not been
5109 modified, so we have to have a negative addend to compensate.
5111 Note that symbols which used to be common must be left alone. */
5113 /* Calculate any reloc addend by looking at the symbol. */
5114 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
5116 cache_ptr->address -= asect->vma;
5117 /* !! cache_ptr->section = (asection *) NULL;*/
5119 /* Fill in the cache_ptr->howto field from dst.r_type. */
5120 RTYPE2HOWTO (cache_ptr, &dst);
5121 #endif /* RELOC_PROCESSING */
5123 if (cache_ptr->howto == NULL)
5125 (*_bfd_error_handler)
5126 (_("%B: illegal relocation type %d at address 0x%lx"),
5127 abfd, dst.r_type, (long) dst.r_vaddr);
5128 bfd_set_error (bfd_error_bad_value);
5129 return FALSE;
5133 asect->relocation = reloc_cache;
5134 return TRUE;
5137 #ifndef coff_rtype_to_howto
5138 #ifdef RTYPE2HOWTO
5140 /* Get the howto structure for a reloc. This is only used if the file
5141 including this one defines coff_relocate_section to be
5142 _bfd_coff_generic_relocate_section, so it is OK if it does not
5143 always work. It is the responsibility of the including file to
5144 make sure it is reasonable if it is needed. */
5146 static reloc_howto_type *coff_rtype_to_howto
5147 PARAMS ((bfd *, asection *, struct internal_reloc *,
5148 struct coff_link_hash_entry *, struct internal_syment *,
5149 bfd_vma *));
5151 static reloc_howto_type *
5152 coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
5153 bfd *abfd ATTRIBUTE_UNUSED;
5154 asection *sec ATTRIBUTE_UNUSED;
5155 struct internal_reloc *rel;
5156 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED;
5157 struct internal_syment *sym ATTRIBUTE_UNUSED;
5158 bfd_vma *addendp ATTRIBUTE_UNUSED;
5160 arelent genrel;
5162 RTYPE2HOWTO (&genrel, rel);
5163 return genrel.howto;
5166 #else /* ! defined (RTYPE2HOWTO) */
5168 #define coff_rtype_to_howto NULL
5170 #endif /* ! defined (RTYPE2HOWTO) */
5171 #endif /* ! defined (coff_rtype_to_howto) */
5173 /* This is stupid. This function should be a boolean predicate. */
5174 static long
5175 coff_canonicalize_reloc (abfd, section, relptr, symbols)
5176 bfd * abfd;
5177 sec_ptr section;
5178 arelent ** relptr;
5179 asymbol ** symbols;
5181 arelent *tblptr = section->relocation;
5182 unsigned int count = 0;
5184 if (section->flags & SEC_CONSTRUCTOR)
5186 /* This section has relocs made up by us, they are not in the
5187 file, so take them out of their chain and place them into
5188 the data area provided. */
5189 arelent_chain *chain = section->constructor_chain;
5191 for (count = 0; count < section->reloc_count; count++)
5193 *relptr++ = &chain->relent;
5194 chain = chain->next;
5197 else
5199 if (! coff_slurp_reloc_table (abfd, section, symbols))
5200 return -1;
5202 tblptr = section->relocation;
5204 for (; count++ < section->reloc_count;)
5205 *relptr++ = tblptr++;
5207 *relptr = 0;
5208 return section->reloc_count;
5211 #ifdef GNU960
5212 file_ptr
5213 coff_sym_filepos (abfd)
5214 bfd *abfd;
5216 return obj_sym_filepos (abfd);
5218 #endif
5220 #ifndef coff_reloc16_estimate
5221 #define coff_reloc16_estimate dummy_reloc16_estimate
5223 static int dummy_reloc16_estimate
5224 PARAMS ((bfd *, asection *, arelent *, unsigned int,
5225 struct bfd_link_info *));
5227 static int
5228 dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
5229 bfd *abfd ATTRIBUTE_UNUSED;
5230 asection *input_section ATTRIBUTE_UNUSED;
5231 arelent *reloc ATTRIBUTE_UNUSED;
5232 unsigned int shrink ATTRIBUTE_UNUSED;
5233 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
5235 abort ();
5236 return 0;
5239 #endif
5241 #ifndef coff_reloc16_extra_cases
5243 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
5245 /* This works even if abort is not declared in any header file. */
5247 static void dummy_reloc16_extra_cases
5248 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
5249 bfd_byte *, unsigned int *, unsigned int *));
5251 static void
5252 dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
5253 dst_ptr)
5254 bfd *abfd ATTRIBUTE_UNUSED;
5255 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
5256 struct bfd_link_order *link_order ATTRIBUTE_UNUSED;
5257 arelent *reloc ATTRIBUTE_UNUSED;
5258 bfd_byte *data ATTRIBUTE_UNUSED;
5259 unsigned int *src_ptr ATTRIBUTE_UNUSED;
5260 unsigned int *dst_ptr ATTRIBUTE_UNUSED;
5262 abort ();
5264 #endif
5266 #ifndef coff_bfd_link_hash_table_free
5267 #define coff_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
5268 #endif
5270 /* If coff_relocate_section is defined, we can use the optimized COFF
5271 backend linker. Otherwise we must continue to use the old linker. */
5272 #ifdef coff_relocate_section
5273 #ifndef coff_bfd_link_hash_table_create
5274 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
5275 #endif
5276 #ifndef coff_bfd_link_add_symbols
5277 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
5278 #endif
5279 #ifndef coff_bfd_final_link
5280 #define coff_bfd_final_link _bfd_coff_final_link
5281 #endif
5282 #else /* ! defined (coff_relocate_section) */
5283 #define coff_relocate_section NULL
5284 #ifndef coff_bfd_link_hash_table_create
5285 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
5286 #endif
5287 #ifndef coff_bfd_link_add_symbols
5288 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
5289 #endif
5290 #define coff_bfd_final_link _bfd_generic_final_link
5291 #endif /* ! defined (coff_relocate_section) */
5293 #define coff_bfd_link_just_syms _bfd_generic_link_just_syms
5294 #define coff_bfd_link_split_section _bfd_generic_link_split_section
5296 #ifndef coff_start_final_link
5297 #define coff_start_final_link NULL
5298 #endif
5300 #ifndef coff_adjust_symndx
5301 #define coff_adjust_symndx NULL
5302 #endif
5304 #ifndef coff_link_add_one_symbol
5305 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5306 #endif
5308 #ifndef coff_link_output_has_begun
5310 static bfd_boolean coff_link_output_has_begun
5311 PARAMS ((bfd *, struct coff_final_link_info *));
5313 static bfd_boolean
5314 coff_link_output_has_begun (abfd, info)
5315 bfd * abfd;
5316 struct coff_final_link_info * info ATTRIBUTE_UNUSED;
5318 return abfd->output_has_begun;
5320 #endif
5322 #ifndef coff_final_link_postscript
5324 static bfd_boolean coff_final_link_postscript
5325 PARAMS ((bfd *, struct coff_final_link_info *));
5327 static bfd_boolean
5328 coff_final_link_postscript (abfd, pfinfo)
5329 bfd * abfd ATTRIBUTE_UNUSED;
5330 struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED;
5332 return TRUE;
5334 #endif
5336 #ifndef coff_SWAP_aux_in
5337 #define coff_SWAP_aux_in coff_swap_aux_in
5338 #endif
5339 #ifndef coff_SWAP_sym_in
5340 #define coff_SWAP_sym_in coff_swap_sym_in
5341 #endif
5342 #ifndef coff_SWAP_lineno_in
5343 #define coff_SWAP_lineno_in coff_swap_lineno_in
5344 #endif
5345 #ifndef coff_SWAP_aux_out
5346 #define coff_SWAP_aux_out coff_swap_aux_out
5347 #endif
5348 #ifndef coff_SWAP_sym_out
5349 #define coff_SWAP_sym_out coff_swap_sym_out
5350 #endif
5351 #ifndef coff_SWAP_lineno_out
5352 #define coff_SWAP_lineno_out coff_swap_lineno_out
5353 #endif
5354 #ifndef coff_SWAP_reloc_out
5355 #define coff_SWAP_reloc_out coff_swap_reloc_out
5356 #endif
5357 #ifndef coff_SWAP_filehdr_out
5358 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5359 #endif
5360 #ifndef coff_SWAP_aouthdr_out
5361 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5362 #endif
5363 #ifndef coff_SWAP_scnhdr_out
5364 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5365 #endif
5366 #ifndef coff_SWAP_reloc_in
5367 #define coff_SWAP_reloc_in coff_swap_reloc_in
5368 #endif
5369 #ifndef coff_SWAP_filehdr_in
5370 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5371 #endif
5372 #ifndef coff_SWAP_aouthdr_in
5373 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5374 #endif
5375 #ifndef coff_SWAP_scnhdr_in
5376 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5377 #endif
5379 static const bfd_coff_backend_data bfd_coff_std_swap_table =
5381 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5382 coff_SWAP_aux_out, coff_SWAP_sym_out,
5383 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5384 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5385 coff_SWAP_scnhdr_out,
5386 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5387 #ifdef COFF_LONG_FILENAMES
5388 TRUE,
5389 #else
5390 FALSE,
5391 #endif
5392 #ifdef COFF_LONG_SECTION_NAMES
5393 TRUE,
5394 #else
5395 FALSE,
5396 #endif
5397 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5398 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5399 TRUE,
5400 #else
5401 FALSE,
5402 #endif
5403 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5405 #else
5407 #endif
5408 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5409 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5410 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5411 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5412 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5413 coff_classify_symbol, coff_compute_section_file_positions,
5414 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5415 coff_adjust_symndx, coff_link_add_one_symbol,
5416 coff_link_output_has_begun, coff_final_link_postscript
5419 #ifdef TICOFF
5420 /* COFF0 differs in file/section header size and relocation entry size. */
5421 static const bfd_coff_backend_data ticoff0_swap_table =
5423 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5424 coff_SWAP_aux_out, coff_SWAP_sym_out,
5425 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5426 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5427 coff_SWAP_scnhdr_out,
5428 FILHSZ_V0, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ_V0, LINESZ, FILNMLEN,
5429 #ifdef COFF_LONG_FILENAMES
5430 TRUE,
5431 #else
5432 FALSE,
5433 #endif
5434 #ifdef COFF_LONG_SECTION_NAMES
5435 TRUE,
5436 #else
5437 FALSE,
5438 #endif
5439 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5440 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5441 TRUE,
5442 #else
5443 FALSE,
5444 #endif
5445 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5447 #else
5449 #endif
5450 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5451 coff_SWAP_reloc_in, ticoff0_bad_format_hook, coff_set_arch_mach_hook,
5452 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5453 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5454 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5455 coff_classify_symbol, coff_compute_section_file_positions,
5456 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5457 coff_adjust_symndx, coff_link_add_one_symbol,
5458 coff_link_output_has_begun, coff_final_link_postscript
5460 #endif
5462 #ifdef TICOFF
5463 /* COFF1 differs in section header size. */
5464 static const bfd_coff_backend_data ticoff1_swap_table =
5466 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5467 coff_SWAP_aux_out, coff_SWAP_sym_out,
5468 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5469 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5470 coff_SWAP_scnhdr_out,
5471 FILHSZ, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5472 #ifdef COFF_LONG_FILENAMES
5473 TRUE,
5474 #else
5475 FALSE,
5476 #endif
5477 #ifdef COFF_LONG_SECTION_NAMES
5478 TRUE,
5479 #else
5480 FALSE,
5481 #endif
5482 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5483 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5484 TRUE,
5485 #else
5486 FALSE,
5487 #endif
5488 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5490 #else
5492 #endif
5493 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5494 coff_SWAP_reloc_in, ticoff1_bad_format_hook, coff_set_arch_mach_hook,
5495 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5496 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5497 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5498 coff_classify_symbol, coff_compute_section_file_positions,
5499 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5500 coff_adjust_symndx, coff_link_add_one_symbol,
5501 coff_link_output_has_begun, coff_final_link_postscript
5503 #endif
5505 #ifndef coff_close_and_cleanup
5506 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5507 #endif
5509 #ifndef coff_bfd_free_cached_info
5510 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5511 #endif
5513 #ifndef coff_get_section_contents
5514 #define coff_get_section_contents _bfd_generic_get_section_contents
5515 #endif
5517 #ifndef coff_bfd_copy_private_symbol_data
5518 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5519 #endif
5521 #ifndef coff_bfd_copy_private_header_data
5522 #define coff_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
5523 #endif
5525 #ifndef coff_bfd_copy_private_section_data
5526 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5527 #endif
5529 #ifndef coff_bfd_copy_private_bfd_data
5530 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5531 #endif
5533 #ifndef coff_bfd_merge_private_bfd_data
5534 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5535 #endif
5537 #ifndef coff_bfd_set_private_flags
5538 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5539 #endif
5541 #ifndef coff_bfd_print_private_bfd_data
5542 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5543 #endif
5545 #ifndef coff_bfd_is_local_label_name
5546 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5547 #endif
5549 #ifndef coff_read_minisymbols
5550 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5551 #endif
5553 #ifndef coff_minisymbol_to_symbol
5554 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5555 #endif
5557 /* The reloc lookup routine must be supplied by each individual COFF
5558 backend. */
5559 #ifndef coff_bfd_reloc_type_lookup
5560 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5561 #endif
5563 #ifndef coff_bfd_get_relocated_section_contents
5564 #define coff_bfd_get_relocated_section_contents \
5565 bfd_generic_get_relocated_section_contents
5566 #endif
5568 #ifndef coff_bfd_relax_section
5569 #define coff_bfd_relax_section bfd_generic_relax_section
5570 #endif
5572 #ifndef coff_bfd_gc_sections
5573 #define coff_bfd_gc_sections bfd_generic_gc_sections
5574 #endif
5576 #ifndef coff_bfd_merge_sections
5577 #define coff_bfd_merge_sections bfd_generic_merge_sections
5578 #endif
5580 #ifndef coff_bfd_is_group_section
5581 #define coff_bfd_is_group_section bfd_generic_is_group_section
5582 #endif
5584 #ifndef coff_bfd_discard_group
5585 #define coff_bfd_discard_group bfd_generic_discard_group
5586 #endif
5588 #ifndef coff_section_already_linked
5589 #define coff_section_already_linked \
5590 _bfd_generic_section_already_linked
5591 #endif
5593 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5594 const bfd_target VAR = \
5596 NAME , \
5597 bfd_target_coff_flavour, \
5598 BFD_ENDIAN_BIG, /* data byte order is big */ \
5599 BFD_ENDIAN_BIG, /* header byte order is big */ \
5600 /* object flags */ \
5601 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5602 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5603 /* section flags */ \
5604 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5605 UNDER, /* leading symbol underscore */ \
5606 '/', /* ar_pad_char */ \
5607 15, /* ar_max_namelen */ \
5609 /* Data conversion functions. */ \
5610 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5611 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5612 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5614 /* Header conversion functions. */ \
5615 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5616 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5617 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5619 /* bfd_check_format */ \
5620 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5621 _bfd_dummy_target }, \
5622 /* bfd_set_format */ \
5623 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5624 /* bfd_write_contents */ \
5625 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5626 bfd_false }, \
5628 BFD_JUMP_TABLE_GENERIC (coff), \
5629 BFD_JUMP_TABLE_COPY (coff), \
5630 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5631 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5632 BFD_JUMP_TABLE_SYMBOLS (coff), \
5633 BFD_JUMP_TABLE_RELOCS (coff), \
5634 BFD_JUMP_TABLE_WRITE (coff), \
5635 BFD_JUMP_TABLE_LINK (coff), \
5636 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5638 ALTERNATIVE, \
5640 SWAP_TABLE \
5643 #define CREATE_BIGHDR_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5644 const bfd_target VAR = \
5646 NAME , \
5647 bfd_target_coff_flavour, \
5648 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5649 BFD_ENDIAN_BIG, /* header byte order is big */ \
5650 /* object flags */ \
5651 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5652 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5653 /* section flags */ \
5654 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5655 UNDER, /* leading symbol underscore */ \
5656 '/', /* ar_pad_char */ \
5657 15, /* ar_max_namelen */ \
5659 /* Data conversion functions. */ \
5660 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5661 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5662 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5664 /* Header conversion functions. */ \
5665 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5666 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5667 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5669 /* bfd_check_format */ \
5670 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5671 _bfd_dummy_target }, \
5672 /* bfd_set_format */ \
5673 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5674 /* bfd_write_contents */ \
5675 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5676 bfd_false }, \
5678 BFD_JUMP_TABLE_GENERIC (coff), \
5679 BFD_JUMP_TABLE_COPY (coff), \
5680 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5681 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5682 BFD_JUMP_TABLE_SYMBOLS (coff), \
5683 BFD_JUMP_TABLE_RELOCS (coff), \
5684 BFD_JUMP_TABLE_WRITE (coff), \
5685 BFD_JUMP_TABLE_LINK (coff), \
5686 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5688 ALTERNATIVE, \
5690 SWAP_TABLE \
5693 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5694 const bfd_target VAR = \
5696 NAME , \
5697 bfd_target_coff_flavour, \
5698 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5699 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5700 /* object flags */ \
5701 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5702 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5703 /* section flags */ \
5704 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5705 UNDER, /* leading symbol underscore */ \
5706 '/', /* ar_pad_char */ \
5707 15, /* ar_max_namelen */ \
5709 /* Data conversion functions. */ \
5710 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5711 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5712 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5713 /* Header conversion functions. */ \
5714 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5715 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5716 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5717 /* bfd_check_format */ \
5718 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5719 _bfd_dummy_target }, \
5720 /* bfd_set_format */ \
5721 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5722 /* bfd_write_contents */ \
5723 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5724 bfd_false }, \
5726 BFD_JUMP_TABLE_GENERIC (coff), \
5727 BFD_JUMP_TABLE_COPY (coff), \
5728 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5729 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5730 BFD_JUMP_TABLE_SYMBOLS (coff), \
5731 BFD_JUMP_TABLE_RELOCS (coff), \
5732 BFD_JUMP_TABLE_WRITE (coff), \
5733 BFD_JUMP_TABLE_LINK (coff), \
5734 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5736 ALTERNATIVE, \
5738 SWAP_TABLE \