Add field ``name'' to floatformat.
[binutils.git] / bfd / coffcode.h
blob26c86203c43de23e88bf48201ccd37cb54665098
1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000
3 Free Software Foundation, Inc.
4 Written by Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 Most of this hacked by Steve Chamberlain,
24 sac@cygnus.com
28 SECTION
29 coff backends
31 BFD supports a number of different flavours of coff format.
32 The major differences between formats are the sizes and
33 alignments of fields in structures on disk, and the occasional
34 extra field.
36 Coff in all its varieties is implemented with a few common
37 files and a number of implementation specific files. For
38 example, The 88k bcs coff format is implemented in the file
39 @file{coff-m88k.c}. This file @code{#include}s
40 @file{coff/m88k.h} which defines the external structure of the
41 coff format for the 88k, and @file{coff/internal.h} which
42 defines the internal structure. @file{coff-m88k.c} also
43 defines the relocations used by the 88k format
44 @xref{Relocations}.
46 The Intel i960 processor version of coff is implemented in
47 @file{coff-i960.c}. This file has the same structure as
48 @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
49 rather than @file{coff-m88k.h}.
51 SUBSECTION
52 Porting to a new version of coff
54 The recommended method is to select from the existing
55 implementations the version of coff which is most like the one
56 you want to use. For example, we'll say that i386 coff is
57 the one you select, and that your coff flavour is called foo.
58 Copy @file{i386coff.c} to @file{foocoff.c}, copy
59 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
60 and add the lines to @file{targets.c} and @file{Makefile.in}
61 so that your new back end is used. Alter the shapes of the
62 structures in @file{../include/coff/foo.h} so that they match
63 what you need. You will probably also have to add
64 @code{#ifdef}s to the code in @file{coff/internal.h} and
65 @file{coffcode.h} if your version of coff is too wild.
67 You can verify that your new BFD backend works quite simply by
68 building @file{objdump} from the @file{binutils} directory,
69 and making sure that its version of what's going on and your
70 host system's idea (assuming it has the pretty standard coff
71 dump utility, usually called @code{att-dump} or just
72 @code{dump}) are the same. Then clean up your code, and send
73 what you've done to Cygnus. Then your stuff will be in the
74 next release, and you won't have to keep integrating it.
76 SUBSECTION
77 How the coff backend works
79 SUBSUBSECTION
80 File layout
82 The Coff backend is split into generic routines that are
83 applicable to any Coff target and routines that are specific
84 to a particular target. The target-specific routines are
85 further split into ones which are basically the same for all
86 Coff targets except that they use the external symbol format
87 or use different values for certain constants.
89 The generic routines are in @file{coffgen.c}. These routines
90 work for any Coff target. They use some hooks into the target
91 specific code; the hooks are in a @code{bfd_coff_backend_data}
92 structure, one of which exists for each target.
94 The essentially similar target-specific routines are in
95 @file{coffcode.h}. This header file includes executable C code.
96 The various Coff targets first include the appropriate Coff
97 header file, make any special defines that are needed, and
98 then include @file{coffcode.h}.
100 Some of the Coff targets then also have additional routines in
101 the target source file itself.
103 For example, @file{coff-i960.c} includes
104 @file{coff/internal.h} and @file{coff/i960.h}. It then
105 defines a few constants, such as @code{I960}, and includes
106 @file{coffcode.h}. Since the i960 has complex relocation
107 types, @file{coff-i960.c} also includes some code to
108 manipulate the i960 relocs. This code is not in
109 @file{coffcode.h} because it would not be used by any other
110 target.
112 SUBSUBSECTION
113 Bit twiddling
115 Each flavour of coff supported in BFD has its own header file
116 describing the external layout of the structures. There is also
117 an internal description of the coff layout, in
118 @file{coff/internal.h}. A major function of the
119 coff backend is swapping the bytes and twiddling the bits to
120 translate the external form of the structures into the normal
121 internal form. This is all performed in the
122 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
123 elements are different sizes between different versions of
124 coff; it is the duty of the coff version specific include file
125 to override the definitions of various packing routines in
126 @file{coffcode.h}. E.g., the size of line number entry in coff is
127 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
128 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
129 correct one. No doubt, some day someone will find a version of
130 coff which has a varying field size not catered to at the
131 moment. To port BFD, that person will have to add more @code{#defines}.
132 Three of the bit twiddling routines are exported to
133 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
134 and @code{coff_swap_lineno_in}. @code{GDB} reads the symbol
135 table on its own, but uses BFD to fix things up. More of the
136 bit twiddlers are exported for @code{gas};
137 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
138 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
139 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
140 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
141 of all the symbol table and reloc drudgery itself, thereby
142 saving the internal BFD overhead, but uses BFD to swap things
143 on the way out, making cross ports much safer. Doing so also
144 allows BFD (and thus the linker) to use the same header files
145 as @code{gas}, which makes one avenue to disaster disappear.
147 SUBSUBSECTION
148 Symbol reading
150 The simple canonical form for symbols used by BFD is not rich
151 enough to keep all the information available in a coff symbol
152 table. The back end gets around this problem by keeping the original
153 symbol table around, "behind the scenes".
155 When a symbol table is requested (through a call to
156 @code{bfd_canonicalize_symtab}), a request gets through to
157 @code{coff_get_normalized_symtab}. This reads the symbol table from
158 the coff file and swaps all the structures inside into the
159 internal form. It also fixes up all the pointers in the table
160 (represented in the file by offsets from the first symbol in
161 the table) into physical pointers to elements in the new
162 internal table. This involves some work since the meanings of
163 fields change depending upon context: a field that is a
164 pointer to another structure in the symbol table at one moment
165 may be the size in bytes of a structure at the next. Another
166 pass is made over the table. All symbols which mark file names
167 (<<C_FILE>> symbols) are modified so that the internal
168 string points to the value in the auxent (the real filename)
169 rather than the normal text associated with the symbol
170 (@code{".file"}).
172 At this time the symbol names are moved around. Coff stores
173 all symbols less than nine characters long physically
174 within the symbol table; longer strings are kept at the end of
175 the file in the string table. This pass moves all strings
176 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 hierachy 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
252 . {* Remembers the offset from the first symbol in the file for
253 . this symbol. Generated by coff_renumber_symbols. *}
254 .unsigned int offset;
256 . {* Should the value of this symbol be renumbered. Used for
257 . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
258 .unsigned int fix_value : 1;
260 . {* Should the tag field of this symbol be renumbered.
261 . Created by coff_pointerize_aux. *}
262 .unsigned int fix_tag : 1;
264 . {* Should the endidx field of this symbol be renumbered.
265 . Created by coff_pointerize_aux. *}
266 .unsigned int fix_end : 1;
268 . {* Should the x_csect.x_scnlen field be renumbered.
269 . Created by coff_pointerize_aux. *}
270 .unsigned int fix_scnlen : 1;
272 . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
273 . index into the line number entries. Set by
274 . coff_slurp_symbol_table. *}
275 .unsigned int fix_line : 1;
277 . {* The container for the symbol structure as read and translated
278 . from the file. *}
280 .union {
281 . union internal_auxent auxent;
282 . struct internal_syment syment;
283 . } u;
284 .} combined_entry_type;
287 .{* Each canonical asymbol really looks like this: *}
289 .typedef struct coff_symbol_struct
291 . {* The actual symbol which the rest of BFD works with *}
292 .asymbol symbol;
294 . {* A pointer to the hidden information for this symbol *}
295 .combined_entry_type *native;
297 . {* A pointer to the linenumber information for this symbol *}
298 .struct lineno_cache_entry *lineno;
300 . {* Have the line numbers been relocated yet ? *}
301 .boolean done_lineno;
302 .} coff_symbol_type;
307 #ifdef COFF_WITH_PE
308 #include "peicode.h"
309 #else
310 #include "coffswap.h"
311 #endif
313 #define STRING_SIZE_SIZE (4)
315 static long sec_to_styp_flags PARAMS ((const char *, flagword));
316 static flagword styp_to_sec_flags
317 PARAMS ((bfd *, PTR, const char *, asection *));
318 static boolean coff_bad_format_hook PARAMS ((bfd *, PTR));
319 static void coff_set_custom_section_alignment
320 PARAMS ((bfd *, asection *, const struct coff_section_alignment_entry *,
321 const unsigned int));
322 static boolean coff_new_section_hook PARAMS ((bfd *, asection *));
323 static boolean coff_set_arch_mach_hook PARAMS ((bfd *, PTR));
324 static boolean coff_write_relocs PARAMS ((bfd *, int));
325 static boolean coff_set_flags
326 PARAMS ((bfd *, unsigned int *, unsigned short *));
327 static boolean coff_set_arch_mach
328 PARAMS ((bfd *, enum bfd_architecture, unsigned long));
329 static boolean coff_compute_section_file_positions PARAMS ((bfd *));
330 static boolean coff_write_object_contents PARAMS ((bfd *));
331 static boolean coff_set_section_contents
332 PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
333 static PTR buy_and_read PARAMS ((bfd *, file_ptr, int, size_t));
334 static boolean coff_slurp_line_table PARAMS ((bfd *, asection *));
335 static boolean coff_slurp_symbol_table PARAMS ((bfd *));
336 static enum coff_symbol_classification coff_classify_symbol
337 PARAMS ((bfd *, struct internal_syment *));
338 static boolean coff_slurp_reloc_table PARAMS ((bfd *, asection *, asymbol **));
339 static long coff_canonicalize_reloc
340 PARAMS ((bfd *, asection *, arelent **, asymbol **));
341 #ifndef coff_mkobject_hook
342 static PTR coff_mkobject_hook PARAMS ((bfd *, PTR, PTR));
343 #endif
345 /* void warning(); */
347 /* Return a word with STYP_* (scnhdr.s_flags) flags set to represent
348 the incoming SEC_* flags. The inverse of this function is
349 styp_to_sec_flags(). NOTE: If you add to/change this routine, you
350 should probably mirror the changes in styp_to_sec_flags(). */
352 #ifndef COFF_WITH_PE
354 static long
355 sec_to_styp_flags (sec_name, sec_flags)
356 CONST char *sec_name;
357 flagword sec_flags;
359 long styp_flags = 0;
361 if (!strcmp (sec_name, _TEXT))
363 styp_flags = STYP_TEXT;
365 else if (!strcmp (sec_name, _DATA))
367 styp_flags = STYP_DATA;
369 else if (!strcmp (sec_name, _BSS))
371 styp_flags = STYP_BSS;
372 #ifdef _COMMENT
374 else if (!strcmp (sec_name, _COMMENT))
376 styp_flags = STYP_INFO;
377 #endif /* _COMMENT */
378 #ifdef _LIB
380 else if (!strcmp (sec_name, _LIB))
382 styp_flags = STYP_LIB;
383 #endif /* _LIB */
384 #ifdef _LIT
386 else if (!strcmp (sec_name, _LIT))
388 styp_flags = STYP_LIT;
389 #endif /* _LIT */
391 else if (!strcmp (sec_name, ".debug"))
393 #ifdef STYP_DEBUG
394 styp_flags = STYP_DEBUG;
395 #else
396 styp_flags = STYP_INFO;
397 #endif
399 else if (!strncmp (sec_name, ".stab", 5))
401 #ifdef COFF_ALIGN_IN_S_FLAGS
402 styp_flags = STYP_DSECT;
403 #else
404 styp_flags = STYP_INFO;
405 #endif
407 #ifdef RS6000COFF_C
408 else if (!strcmp (sec_name, _PAD))
410 styp_flags = STYP_PAD;
412 else if (!strcmp (sec_name, _LOADER))
414 styp_flags = STYP_LOADER;
416 #endif
417 /* Try and figure out what it should be */
418 else if (sec_flags & SEC_CODE)
420 styp_flags = STYP_TEXT;
422 else if (sec_flags & SEC_DATA)
424 styp_flags = STYP_DATA;
426 else if (sec_flags & SEC_READONLY)
428 #ifdef STYP_LIT /* 29k readonly text/data section */
429 styp_flags = STYP_LIT;
430 #else
431 styp_flags = STYP_TEXT;
432 #endif /* STYP_LIT */
434 else if (sec_flags & SEC_LOAD)
436 styp_flags = STYP_TEXT;
438 else if (sec_flags & SEC_ALLOC)
440 styp_flags = STYP_BSS;
443 #ifdef STYP_CLINK
444 if (sec_flags & SEC_CLINK)
445 styp_flags |= STYP_CLINK;
446 #endif
448 #ifdef STYP_BLOCK
449 if (sec_flags & SEC_BLOCK)
450 styp_flags |= STYP_BLOCK;
451 #endif
453 #ifdef STYP_NOLOAD
454 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
455 styp_flags |= STYP_NOLOAD;
456 #endif
458 return styp_flags;
461 #else /* COFF_WITH_PE */
463 /* The PE version; see above for the general comments. The non-PE
464 case seems to be more guessing, and breaks PE format; specifically,
465 .rdata is readonly, but it sure ain't text. Really, all this
466 should be set up properly in gas (or whatever assembler is in use),
467 and honor whatever objcopy/strip, etc. sent us as input. */
469 static long
470 sec_to_styp_flags (sec_name, sec_flags)
471 const char *sec_name ATTRIBUTE_UNUSED;
472 flagword sec_flags;
474 long styp_flags = 0;
476 /* caution: there are at least three groups of symbols that have
477 very similar bits and meanings: IMAGE_SCN*, SEC_*, and STYP_*.
478 SEC_* are the BFD internal flags, used for generic BFD
479 information. STYP_* are the COFF section flags which appear in
480 COFF files. IMAGE_SCN_* are the PE section flags which appear in
481 PE files. The STYP_* flags and the IMAGE_SCN_* flags overlap,
482 but there are more IMAGE_SCN_* flags. */
484 /* skip LOAD */
485 /* READONLY later */
486 /* skip RELOC */
487 if ((sec_flags & SEC_CODE) != 0)
488 styp_flags |= IMAGE_SCN_CNT_CODE;
489 if ((sec_flags & SEC_DATA) != 0)
490 styp_flags |= IMAGE_SCN_CNT_INITIALIZED_DATA;
491 if ((sec_flags & SEC_ALLOC) != 0 && (sec_flags & SEC_LOAD) == 0)
492 styp_flags |= IMAGE_SCN_CNT_UNINITIALIZED_DATA; /* ==STYP_BSS */
493 /* skip ROM */
494 /* skip CONSTRUCTOR */
495 /* skip CONTENTS */
496 #ifdef STYP_NOLOAD
497 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
498 styp_flags |= STYP_NOLOAD;
499 #endif
500 if ((sec_flags & SEC_IS_COMMON) != 0)
501 styp_flags |= IMAGE_SCN_LNK_COMDAT;
502 if ((sec_flags & SEC_DEBUGGING) != 0)
503 styp_flags |= IMAGE_SCN_MEM_DISCARDABLE;
504 if ((sec_flags & SEC_EXCLUDE) != 0)
505 styp_flags |= IMAGE_SCN_LNK_REMOVE;
506 if ((sec_flags & SEC_NEVER_LOAD) != 0)
507 styp_flags |= IMAGE_SCN_LNK_REMOVE;
508 /* skip IN_MEMORY */
509 /* skip SORT */
510 if (sec_flags & SEC_LINK_ONCE)
511 styp_flags |= IMAGE_SCN_LNK_COMDAT;
512 /* skip LINK_DUPLICATES */
513 /* skip LINKER_CREATED */
515 /* For now, the read/write bits are mapped onto SEC_READONLY, even
516 though the semantics don't quite match. The bits from the input
517 are retained in pei_section_data(abfd, section)->pe_flags */
519 styp_flags |= IMAGE_SCN_MEM_READ; /* always readable. */
520 if ((sec_flags & SEC_READONLY) == 0)
521 styp_flags |= IMAGE_SCN_MEM_WRITE; /* Invert READONLY for write */
522 if (sec_flags & SEC_CODE)
523 styp_flags |= IMAGE_SCN_MEM_EXECUTE; /* CODE->EXECUTE */
524 if (sec_flags & SEC_SHARED)
525 styp_flags |= IMAGE_SCN_MEM_SHARED; /* Shared remains meaningful */
527 return styp_flags;
530 #endif /* COFF_WITH_PE */
532 /* Return a word with SEC_* flags set to represent the incoming STYP_*
533 flags (from scnhdr.s_flags). The inverse of this function is
534 sec_to_styp_flags(). NOTE: If you add to/change this routine, you
535 should probably mirror the changes in sec_to_styp_flags(). */
537 #ifndef COFF_WITH_PE
539 static flagword
540 styp_to_sec_flags (abfd, hdr, name, section)
541 bfd *abfd ATTRIBUTE_UNUSED;
542 PTR hdr;
543 const char *name;
544 asection *section ATTRIBUTE_UNUSED;
546 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
547 long styp_flags = internal_s->s_flags;
548 flagword sec_flags = 0;
550 #ifdef STYP_BLOCK
551 if (styp_flags & STYP_BLOCK)
552 sec_flags |= SEC_BLOCK;
553 #endif
555 #ifdef STYP_CLINK
556 if (styp_flags & STYP_CLINK)
557 sec_flags |= SEC_CLINK;
558 #endif
560 #ifdef STYP_NOLOAD
561 if (styp_flags & STYP_NOLOAD)
563 sec_flags |= SEC_NEVER_LOAD;
565 #endif /* STYP_NOLOAD */
567 /* For 386 COFF, at least, an unloadable text or data section is
568 actually a shared library section. */
569 if (styp_flags & STYP_TEXT)
571 if (sec_flags & SEC_NEVER_LOAD)
572 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
573 else
574 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
576 else if (styp_flags & STYP_DATA)
578 if (sec_flags & SEC_NEVER_LOAD)
579 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
580 else
581 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
583 else if (styp_flags & STYP_BSS)
585 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
586 if (sec_flags & SEC_NEVER_LOAD)
587 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
588 else
589 #endif
590 sec_flags |= SEC_ALLOC;
592 else if (styp_flags & STYP_INFO)
594 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
595 defined. coff_compute_section_file_positions uses
596 COFF_PAGE_SIZE to ensure that the low order bits of the
597 section VMA and the file offset match. If we don't know
598 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
599 and demand page loading of the file will fail. */
600 #if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS)
601 sec_flags |= SEC_DEBUGGING;
602 #endif
604 else if (styp_flags & STYP_PAD)
606 sec_flags = 0;
608 else if (strcmp (name, _TEXT) == 0)
610 if (sec_flags & SEC_NEVER_LOAD)
611 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
612 else
613 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
615 else if (strcmp (name, _DATA) == 0)
617 if (sec_flags & SEC_NEVER_LOAD)
618 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
619 else
620 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
622 else if (strcmp (name, _BSS) == 0)
624 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
625 if (sec_flags & SEC_NEVER_LOAD)
626 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
627 else
628 #endif
629 sec_flags |= SEC_ALLOC;
631 else if (strcmp (name, ".debug") == 0
632 #ifdef _COMMENT
633 || strcmp (name, _COMMENT) == 0
634 #endif
635 || strncmp (name, ".stab", 5) == 0)
637 #ifdef COFF_PAGE_SIZE
638 sec_flags |= SEC_DEBUGGING;
639 #endif
641 #ifdef _LIB
642 else if (strcmp (name, _LIB) == 0)
644 #endif
645 #ifdef _LIT
646 else if (strcmp (name, _LIT) == 0)
648 sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY;
650 #endif
651 else
653 sec_flags |= SEC_ALLOC | SEC_LOAD;
656 #ifdef STYP_LIT /* A29k readonly text/data section type */
657 if ((styp_flags & STYP_LIT) == STYP_LIT)
659 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
661 #endif /* STYP_LIT */
662 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
663 if (styp_flags & STYP_OTHER_LOAD)
665 sec_flags = (SEC_LOAD | SEC_ALLOC);
667 #endif /* STYP_SDATA */
669 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
670 /* As a GNU extension, if the name begins with .gnu.linkonce, we
671 only link a single copy of the section. This is used to support
672 g++. g++ will emit each template expansion in its own section.
673 The symbols will be defined as weak, so that multiple definitions
674 are permitted. The GNU linker extension is to actually discard
675 all but one of the sections. */
676 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
677 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
678 #endif
680 return sec_flags;
683 #else /* COFF_WITH_PE */
685 /* The PE version; see above for the general comments.
687 Since to set the SEC_LINK_ONCE and associated flags, we have to
688 look at the symbol table anyway, we return the symbol table index
689 of the symbol being used as the COMDAT symbol. This is admittedly
690 ugly, but there's really nowhere else that we have access to the
691 required information. FIXME: Is the COMDAT symbol index used for
692 any purpose other than objdump? */
694 static flagword
695 styp_to_sec_flags (abfd, hdr, name, section)
696 bfd *abfd ATTRIBUTE_UNUSED;
697 PTR hdr;
698 const char *name;
699 asection *section;
701 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
702 long styp_flags = internal_s->s_flags;
703 flagword sec_flags = 0;
705 if (styp_flags & STYP_DSECT)
706 abort (); /* Don't know what to do */
707 #ifdef SEC_NEVER_LOAD
708 if (styp_flags & STYP_NOLOAD)
709 sec_flags |= SEC_NEVER_LOAD;
710 #endif
711 if (styp_flags & STYP_GROUP)
712 abort (); /* Don't know what to do */
713 /* skip IMAGE_SCN_TYPE_NO_PAD */
714 if (styp_flags & STYP_COPY)
715 abort (); /* Don't know what to do */
716 if (styp_flags & IMAGE_SCN_CNT_CODE)
717 sec_flags |= SEC_CODE | SEC_ALLOC | SEC_LOAD;
718 if (styp_flags & IMAGE_SCN_CNT_INITIALIZED_DATA)
719 sec_flags |= SEC_DATA | SEC_ALLOC | SEC_LOAD;
720 if (styp_flags & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
721 sec_flags |= SEC_ALLOC;
722 if (styp_flags & IMAGE_SCN_LNK_OTHER)
723 abort (); /* Don't know what to do */
724 if (styp_flags & IMAGE_SCN_LNK_INFO)
726 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
727 defined. coff_compute_section_file_positions uses
728 COFF_PAGE_SIZE to ensure that the low order bits of the
729 section VMA and the file offset match. If we don't know
730 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
731 and demand page loading of the file will fail. */
732 #ifdef COFF_PAGE_SIZE
733 sec_flags |= SEC_DEBUGGING;
734 #endif
736 if (styp_flags & STYP_OVER)
737 abort (); /* Don't know what to do */
738 if (styp_flags & IMAGE_SCN_LNK_REMOVE)
739 sec_flags |= SEC_EXCLUDE;
741 if (styp_flags & IMAGE_SCN_MEM_SHARED)
742 sec_flags |= SEC_SHARED;
743 /* COMDAT: see below */
744 if (styp_flags & IMAGE_SCN_MEM_DISCARDABLE)
745 sec_flags |= SEC_DEBUGGING;
746 if (styp_flags & IMAGE_SCN_MEM_NOT_CACHED)
747 abort ();/* Don't know what to do */
748 if (styp_flags & IMAGE_SCN_MEM_NOT_PAGED)
749 abort (); /* Don't know what to do */
751 /* We infer from the distinct read/write/execute bits the settings
752 of some of the bfd flags; the actual values, should we need them,
753 are also in pei_section_data (abfd, section)->pe_flags. */
755 if (styp_flags & IMAGE_SCN_MEM_EXECUTE)
756 sec_flags |= SEC_CODE; /* Probably redundant */
757 /* IMAGE_SCN_MEM_READ is simply ignored, assuming it always to be true. */
758 if ((styp_flags & IMAGE_SCN_MEM_WRITE) == 0)
759 sec_flags |= SEC_READONLY;
761 /* COMDAT gets very special treatment. */
762 if (styp_flags & IMAGE_SCN_LNK_COMDAT)
764 sec_flags |= SEC_LINK_ONCE;
766 /* Unfortunately, the PE format stores essential information in
767 the symbol table, of all places. We need to extract that
768 information now, so that objdump and the linker will know how
769 to handle the section without worrying about the symbols. We
770 can't call slurp_symtab, because the linker doesn't want the
771 swapped symbols. */
773 /* COMDAT sections are special. The first symbol is the section
774 symbol, which tells what kind of COMDAT section it is. The
775 second symbol is the "comdat symbol" - the one with the
776 unique name. GNU uses the section symbol for the unique
777 name; MS uses ".text" for every comdat section. Sigh. - DJ */
779 /* This is not mirrored in sec_to_styp_flags(), but there
780 doesn't seem to be a need to, either, and it would at best be
781 rather messy. */
783 if (_bfd_coff_get_external_symbols (abfd))
785 bfd_byte *esymstart, *esym, *esymend;
786 int seen_state = 0;
787 char *target_name = NULL;
789 esymstart = esym = (bfd_byte *) obj_coff_external_syms (abfd);
790 esymend = esym + obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd);
792 while (esym < esymend)
794 struct internal_syment isym;
795 char buf[SYMNMLEN + 1];
796 const char *symname;
798 bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &isym);
800 if (sizeof (internal_s->s_name) > SYMNMLEN)
802 /* This case implies that the matching symbol name
803 will be in the string table. */
804 abort ();
807 if (isym.n_scnum == section->target_index)
809 /* According to the MSVC documentation, the first
810 TWO entries with the section # are both of
811 interest to us. The first one is the "section
812 symbol" (section name). The second is the comdat
813 symbol name. Here, we've found the first
814 qualifying entry; we distinguish it from the
815 second with a state flag.
817 In the case of gas-generated (at least until that
818 is fixed) .o files, it isn't necessarily the
819 second one. It may be some other later symbol.
821 Since gas also doesn't follow MS conventions and
822 emits the section similar to .text$<name>, where
823 <something> is the name we're looking for, we
824 distinguish the two as follows:
826 If the section name is simply a section name (no
827 $) we presume it's MS-generated, and look at
828 precisely the second symbol for the comdat name.
829 If the section name has a $, we assume it's
830 gas-generated, and look for <something> (whatever
831 follows the $) as the comdat symbol. */
833 /* All 3 branches use this */
834 symname = _bfd_coff_internal_syment_name (abfd, &isym, buf);
836 if (symname == NULL)
837 abort ();
839 switch (seen_state)
841 case 0:
843 /* The first time we've seen the symbol. */
844 union internal_auxent aux;
846 seen_state = 1;
848 /* If it isn't the stuff we're expecting, die;
849 The MS documentation is vague, but it
850 appears that the second entry serves BOTH
851 as the comdat symbol and the defining
852 symbol record (either C_STAT or C_EXT,
853 possibly with an aux entry with debug
854 information if it's a function.) It
855 appears the only way to find the second one
856 is to count. (On Intel, they appear to be
857 adjacent, but on Alpha, they have been
858 found separated.)
860 Here, we think we've found the first one,
861 but there's some checking we can do to be
862 sure. */
864 if (! (isym.n_sclass == C_STAT
865 && isym.n_type == T_NULL
866 && isym.n_value == 0))
867 abort ();
869 /* FIXME LATER: MSVC generates section names
870 like .text for comdats. Gas generates
871 names like .text$foo__Fv (in the case of a
872 function). See comment above for more. */
874 if (strcmp (name, symname) != 0)
875 abort ();
877 /* This is the section symbol. */
879 bfd_coff_swap_aux_in (abfd, (PTR) (esym + bfd_coff_symesz (abfd)),
880 isym.n_type, isym.n_sclass,
881 0, isym.n_numaux, (PTR) &aux);
883 target_name = strchr (name, '$');
884 if (target_name != NULL)
886 /* Gas mode. */
887 seen_state = 2;
888 /* Skip the `$'. */
889 target_name += 1;
892 /* FIXME: Microsoft uses NODUPLICATES and
893 ASSOCIATIVE, but gnu uses ANY and
894 SAME_SIZE. Unfortunately, gnu doesn't do
895 the comdat symbols right. So, until we can
896 fix it to do the right thing, we are
897 temporarily disabling comdats for the MS
898 types (they're used in DLLs and C++, but we
899 don't support *their* C++ libraries anyway
900 - DJ. */
902 /* Cygwin does not follow the MS style, and
903 uses ANY and SAME_SIZE where NODUPLICATES
904 and ASSOCIATIVE should be used. For
905 Interix, we just do the right thing up
906 front. */
908 switch (aux.x_scn.x_comdat)
910 case IMAGE_COMDAT_SELECT_NODUPLICATES:
911 #ifdef STRICT_PE_FORMAT
912 sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
913 #else
914 sec_flags &= ~SEC_LINK_ONCE;
915 #endif
916 break;
918 case IMAGE_COMDAT_SELECT_ANY:
919 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
920 break;
922 case IMAGE_COMDAT_SELECT_SAME_SIZE:
923 sec_flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
924 break;
926 case IMAGE_COMDAT_SELECT_EXACT_MATCH:
927 /* Not yet fully implemented ??? */
928 sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
929 break;
931 /* debug$S gets this case; other
932 implications ??? */
934 /* There may be no symbol... we'll search
935 the whole table... Is this the right
936 place to play this game? Or should we do
937 it when reading it in. */
938 case IMAGE_COMDAT_SELECT_ASSOCIATIVE:
939 #ifdef STRICT_PE_FORMAT
940 /* FIXME: This is not currently implemented. */
941 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
942 #else
943 sec_flags &= ~SEC_LINK_ONCE;
944 #endif
945 break;
947 default: /* 0 means "no symbol" */
948 /* debug$F gets this case; other
949 implications ??? */
950 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
951 break;
954 break;
956 case 2:
957 /* Gas mode: the first matching on partial name. */
959 #ifndef TARGET_UNDERSCORE
960 #define TARGET_UNDERSCORE 0
961 #endif
962 /* Is this the name we're looking for? */
963 if (strcmp (target_name,
964 symname + (TARGET_UNDERSCORE ? 1 : 0)) != 0)
966 /* Not the name we're looking for */
967 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
968 continue;
970 /* Fall through. */
971 case 1:
972 /* MSVC mode: the lexically second symbol (or
973 drop through from the above). */
975 char *newname;
977 /* This must the the second symbol with the
978 section #. It is the actual symbol name.
979 Intel puts the two adjacent, but Alpha (at
980 least) spreads them out. */
982 section->comdat =
983 bfd_alloc (abfd, sizeof (struct bfd_comdat_info));
984 if (section->comdat == NULL)
985 abort ();
986 section->comdat->symbol =
987 (esym - esymstart) / bfd_coff_symesz (abfd);
989 newname = bfd_alloc (abfd, strlen (symname) + 1);
990 if (newname == NULL)
991 abort ();
993 strcpy (newname, symname);
994 section->comdat->name = newname;
998 goto breakloop;
1002 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
1004 breakloop:
1008 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
1009 /* As a GNU extension, if the name begins with .gnu.linkonce, we
1010 only link a single copy of the section. This is used to support
1011 g++. g++ will emit each template expansion in its own section.
1012 The symbols will be defined as weak, so that multiple definitions
1013 are permitted. The GNU linker extension is to actually discard
1014 all but one of the sections. */
1015 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
1016 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1017 #endif
1019 return sec_flags;
1022 #endif /* COFF_WITH_PE */
1024 #define get_index(symbol) ((symbol)->udata.i)
1027 INTERNAL_DEFINITION
1028 bfd_coff_backend_data
1030 CODE_FRAGMENT
1032 .{* COFF symbol classifications. *}
1034 .enum coff_symbol_classification
1036 . {* Global symbol. *}
1037 . COFF_SYMBOL_GLOBAL,
1038 . {* Common symbol. *}
1039 . COFF_SYMBOL_COMMON,
1040 . {* Undefined symbol. *}
1041 . COFF_SYMBOL_UNDEFINED,
1042 . {* Local symbol. *}
1043 . COFF_SYMBOL_LOCAL,
1044 . {* PE section symbol. *}
1045 . COFF_SYMBOL_PE_SECTION
1048 Special entry points for gdb to swap in coff symbol table parts:
1049 .typedef struct
1051 . void (*_bfd_coff_swap_aux_in) PARAMS ((
1052 . bfd *abfd,
1053 . PTR ext,
1054 . int type,
1055 . int class,
1056 . int indaux,
1057 . int numaux,
1058 . PTR in));
1060 . void (*_bfd_coff_swap_sym_in) PARAMS ((
1061 . bfd *abfd ,
1062 . PTR ext,
1063 . PTR in));
1065 . void (*_bfd_coff_swap_lineno_in) PARAMS ((
1066 . bfd *abfd,
1067 . PTR ext,
1068 . PTR in));
1071 Special entry points for gas to swap out coff parts:
1073 . unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
1074 . bfd *abfd,
1075 . PTR in,
1076 . int type,
1077 . int class,
1078 . int indaux,
1079 . int numaux,
1080 . PTR ext));
1082 . unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
1083 . bfd *abfd,
1084 . PTR in,
1085 . PTR ext));
1087 . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
1088 . bfd *abfd,
1089 . PTR in,
1090 . PTR ext));
1092 . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
1093 . bfd *abfd,
1094 . PTR src,
1095 . PTR dst));
1097 . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
1098 . bfd *abfd,
1099 . PTR in,
1100 . PTR out));
1102 . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
1103 . bfd *abfd,
1104 . PTR in,
1105 . PTR out));
1107 . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
1108 . bfd *abfd,
1109 . PTR in,
1110 . PTR out));
1113 Special entry points for generic COFF routines to call target
1114 dependent COFF routines:
1116 . unsigned int _bfd_filhsz;
1117 . unsigned int _bfd_aoutsz;
1118 . unsigned int _bfd_scnhsz;
1119 . unsigned int _bfd_symesz;
1120 . unsigned int _bfd_auxesz;
1121 . unsigned int _bfd_relsz;
1122 . unsigned int _bfd_linesz;
1123 . unsigned int _bfd_filnmlen;
1124 . boolean _bfd_coff_long_filenames;
1125 . boolean _bfd_coff_long_section_names;
1126 . unsigned int _bfd_coff_default_section_alignment_power;
1127 . boolean _bfd_coff_force_symnames_in_strings;
1128 . unsigned int _bfd_coff_debug_string_prefix_length;
1129 . void (*_bfd_coff_swap_filehdr_in) PARAMS ((
1130 . bfd *abfd,
1131 . PTR ext,
1132 . PTR in));
1133 . void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
1134 . bfd *abfd,
1135 . PTR ext,
1136 . PTR in));
1137 . void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
1138 . bfd *abfd,
1139 . PTR ext,
1140 . PTR in));
1141 . void (*_bfd_coff_swap_reloc_in) PARAMS ((
1142 . bfd *abfd,
1143 . PTR ext,
1144 . PTR in));
1145 . boolean (*_bfd_coff_bad_format_hook) PARAMS ((
1146 . bfd *abfd,
1147 . PTR internal_filehdr));
1148 . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
1149 . bfd *abfd,
1150 . PTR internal_filehdr));
1151 . PTR (*_bfd_coff_mkobject_hook) PARAMS ((
1152 . bfd *abfd,
1153 . PTR internal_filehdr,
1154 . PTR internal_aouthdr));
1155 . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
1156 . bfd *abfd,
1157 . PTR internal_scnhdr,
1158 . const char *name,
1159 . asection *section));
1160 . void (*_bfd_set_alignment_hook) PARAMS ((
1161 . bfd *abfd,
1162 . asection *sec,
1163 . PTR internal_scnhdr));
1164 . boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
1165 . bfd *abfd));
1166 . boolean (*_bfd_coff_symname_in_debug) PARAMS ((
1167 . bfd *abfd,
1168 . struct internal_syment *sym));
1169 . boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
1170 . bfd *abfd,
1171 . combined_entry_type *table_base,
1172 . combined_entry_type *symbol,
1173 . unsigned int indaux,
1174 . combined_entry_type *aux));
1175 . boolean (*_bfd_coff_print_aux) PARAMS ((
1176 . bfd *abfd,
1177 . FILE *file,
1178 . combined_entry_type *table_base,
1179 . combined_entry_type *symbol,
1180 . combined_entry_type *aux,
1181 . unsigned int indaux));
1182 . void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
1183 . bfd *abfd,
1184 . struct bfd_link_info *link_info,
1185 . struct bfd_link_order *link_order,
1186 . arelent *reloc,
1187 . bfd_byte *data,
1188 . unsigned int *src_ptr,
1189 . unsigned int *dst_ptr));
1190 . int (*_bfd_coff_reloc16_estimate) PARAMS ((
1191 . bfd *abfd,
1192 . asection *input_section,
1193 . arelent *r,
1194 . unsigned int shrink,
1195 . struct bfd_link_info *link_info));
1196 . enum coff_symbol_classification (*_bfd_coff_classify_symbol) PARAMS ((
1197 . bfd *abfd,
1198 . struct internal_syment *));
1199 . boolean (*_bfd_coff_compute_section_file_positions) PARAMS ((
1200 . bfd *abfd));
1201 . boolean (*_bfd_coff_start_final_link) PARAMS ((
1202 . bfd *output_bfd,
1203 . struct bfd_link_info *info));
1204 . boolean (*_bfd_coff_relocate_section) PARAMS ((
1205 . bfd *output_bfd,
1206 . struct bfd_link_info *info,
1207 . bfd *input_bfd,
1208 . asection *input_section,
1209 . bfd_byte *contents,
1210 . struct internal_reloc *relocs,
1211 . struct internal_syment *syms,
1212 . asection **sections));
1213 . reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
1214 . bfd *abfd,
1215 . asection *sec,
1216 . struct internal_reloc *rel,
1217 . struct coff_link_hash_entry *h,
1218 . struct internal_syment *sym,
1219 . bfd_vma *addendp));
1220 . boolean (*_bfd_coff_adjust_symndx) PARAMS ((
1221 . bfd *obfd,
1222 . struct bfd_link_info *info,
1223 . bfd *ibfd,
1224 . asection *sec,
1225 . struct internal_reloc *reloc,
1226 . boolean *adjustedp));
1227 . boolean (*_bfd_coff_link_add_one_symbol) PARAMS ((
1228 . struct bfd_link_info *info,
1229 . bfd *abfd,
1230 . const char *name,
1231 . flagword flags,
1232 . asection *section,
1233 . bfd_vma value,
1234 . const char *string,
1235 . boolean copy,
1236 . boolean collect,
1237 . struct bfd_link_hash_entry **hashp));
1239 . boolean (*_bfd_coff_link_output_has_begun) PARAMS ((
1240 . bfd * abfd,
1241 . struct coff_final_link_info * pfinfo));
1242 . boolean (*_bfd_coff_final_link_postscript) PARAMS ((
1243 . bfd * abfd,
1244 . struct coff_final_link_info * pfinfo));
1246 .} bfd_coff_backend_data;
1248 .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1250 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1251 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1253 .#define bfd_coff_swap_sym_in(a,e,i) \
1254 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1256 .#define bfd_coff_swap_lineno_in(a,e,i) \
1257 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1259 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1260 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1262 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1263 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1265 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1266 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1268 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1269 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1271 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1272 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1274 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1275 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1277 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1278 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1280 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1281 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1282 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1283 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1284 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1285 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
1286 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1287 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1288 .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1289 .#define bfd_coff_long_section_names(abfd) \
1290 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1291 .#define bfd_coff_default_section_alignment_power(abfd) \
1292 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1293 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1294 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1296 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1297 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1299 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1300 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1302 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1303 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1305 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1306 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1308 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1309 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1310 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1311 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
1313 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section)\
1314 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1315 . (abfd, scnhdr, name, section))
1317 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1318 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1320 .#define bfd_coff_slurp_symbol_table(abfd)\
1321 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1323 .#define bfd_coff_symname_in_debug(abfd, sym)\
1324 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1326 .#define bfd_coff_force_symnames_in_strings(abfd)\
1327 . (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
1329 .#define bfd_coff_debug_string_prefix_length(abfd)\
1330 . (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
1332 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1333 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1334 . (abfd, file, base, symbol, aux, indaux))
1336 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
1337 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1338 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1340 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1341 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1342 . (abfd, section, reloc, shrink, link_info))
1344 .#define bfd_coff_classify_symbol(abfd, sym)\
1345 . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1346 . (abfd, sym))
1348 .#define bfd_coff_compute_section_file_positions(abfd)\
1349 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1350 . (abfd))
1352 .#define bfd_coff_start_final_link(obfd, info)\
1353 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1354 . (obfd, info))
1355 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1356 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1357 . (obfd, info, ibfd, o, con, rel, isyms, secs))
1358 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1359 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1360 . (abfd, sec, rel, h, sym, addendp))
1361 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1362 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1363 . (obfd, info, ibfd, sec, rel, adjustedp))
1364 .#define bfd_coff_link_add_one_symbol(info,abfd,name,flags,section,value,string,cp,coll,hashp)\
1365 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1366 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1368 .#define bfd_coff_link_output_has_begun(a,p) \
1369 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
1370 .#define bfd_coff_final_link_postscript(a,p) \
1371 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
1375 /* See whether the magic number matches. */
1377 static boolean
1378 coff_bad_format_hook (abfd, filehdr)
1379 bfd * abfd ATTRIBUTE_UNUSED;
1380 PTR filehdr;
1382 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1384 if (BADMAG (*internal_f))
1385 return false;
1387 /* if the optional header is NULL or not the correct size then
1388 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1389 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1390 optional header is of a different size.
1392 But the mips keeps extra stuff in it's opthdr, so dont check
1393 when doing that
1396 #if defined(M88) || defined(I960)
1397 if (internal_f->f_opthdr != 0 && bfd_coff_aoutsz (abfd) != internal_f->f_opthdr)
1398 return false;
1399 #endif
1401 return true;
1404 /* Check whether this section uses an alignment other than the
1405 default. */
1407 static void
1408 coff_set_custom_section_alignment (abfd, section, alignment_table, table_size)
1409 bfd *abfd ATTRIBUTE_UNUSED;
1410 asection *section;
1411 const struct coff_section_alignment_entry *alignment_table;
1412 const unsigned int table_size;
1414 const unsigned int default_alignment = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1415 unsigned int i;
1417 for (i = 0; i < table_size; ++i)
1419 const char *secname = bfd_get_section_name (abfd, section);
1420 if (alignment_table[i].comparison_length == (unsigned int) -1
1421 ? strcmp (alignment_table[i].name, secname) == 0
1422 : strncmp (alignment_table[i].name, secname,
1423 alignment_table[i].comparison_length) == 0)
1424 break;
1426 if (i >= table_size)
1427 return;
1429 if (alignment_table[i].default_alignment_min != COFF_ALIGNMENT_FIELD_EMPTY
1430 && default_alignment < alignment_table[i].default_alignment_min)
1431 return;
1433 if (alignment_table[i].default_alignment_max != COFF_ALIGNMENT_FIELD_EMPTY
1434 && default_alignment > alignment_table[i].default_alignment_max)
1435 return;
1437 section->alignment_power = alignment_table[i].alignment_power;
1440 /* Custom section alignment records. */
1442 static const struct coff_section_alignment_entry
1443 coff_section_alignment_table[] =
1445 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1446 COFF_SECTION_ALIGNMENT_ENTRIES,
1447 #endif
1448 /* There must not be any gaps between .stabstr sections. */
1449 { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1450 1, COFF_ALIGNMENT_FIELD_EMPTY, 0 },
1451 /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */
1452 { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1453 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1454 /* Similarly for the .ctors and .dtors sections. */
1455 { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1456 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1457 { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1458 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }
1461 static const unsigned int coff_section_alignment_table_size =
1462 sizeof coff_section_alignment_table / sizeof coff_section_alignment_table[0];
1464 /* Initialize a section structure with information peculiar to this
1465 particular implementation of COFF. */
1467 static boolean
1468 coff_new_section_hook (abfd, section)
1469 bfd *abfd;
1470 asection *section;
1472 combined_entry_type *native;
1474 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1476 #ifdef RS6000COFF_C
1477 if (xcoff_data (abfd)->text_align_power != 0
1478 && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
1479 section->alignment_power = xcoff_data (abfd)->text_align_power;
1480 if (xcoff_data (abfd)->data_align_power != 0
1481 && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
1482 section->alignment_power = xcoff_data (abfd)->data_align_power;
1483 #endif
1485 /* Allocate aux records for section symbols, to store size and
1486 related info.
1488 @@ The 10 is a guess at a plausible maximum number of aux entries
1489 (but shouldn't be a constant). */
1490 native = ((combined_entry_type *)
1491 bfd_zalloc (abfd, sizeof (combined_entry_type) * 10));
1492 if (native == NULL)
1493 return false;
1495 /* We don't need to set up n_name, n_value, or n_scnum in the native
1496 symbol information, since they'll be overriden by the BFD symbol
1497 anyhow. However, we do need to set the type and storage class,
1498 in case this symbol winds up getting written out. The value 0
1499 for n_numaux is already correct. */
1501 native->u.syment.n_type = T_NULL;
1502 native->u.syment.n_sclass = C_STAT;
1504 coffsymbol (section->symbol)->native = native;
1506 coff_set_custom_section_alignment (abfd, section,
1507 coff_section_alignment_table,
1508 coff_section_alignment_table_size);
1510 return true;
1513 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1515 /* Set the alignment of a BFD section. */
1517 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1519 static void
1520 coff_set_alignment_hook (abfd, section, scnhdr)
1521 bfd * abfd ATTRIBUTE_UNUSED;
1522 asection * section;
1523 PTR scnhdr;
1525 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1526 unsigned int i;
1528 #ifdef I960
1529 /* Extract ALIGN from 2**ALIGN stored in section header */
1530 for (i = 0; i < 32; i++)
1531 if ((1 << i) >= hdr->s_align)
1532 break;
1533 #endif
1534 #ifdef TIC80COFF
1535 /* TI tools puts the alignment power in bits 8-11 */
1536 i = (hdr->s_flags >> 8) & 0xF ;
1537 #endif
1538 #ifdef COFF_DECODE_ALIGNMENT
1539 i = COFF_DECODE_ALIGNMENT(hdr->s_flags);
1540 #endif
1541 section->alignment_power = i;
1543 #ifdef coff_set_section_load_page
1544 coff_set_section_load_page (section, hdr->s_page);
1545 #endif
1548 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1549 #ifdef COFF_WITH_PE
1551 /* a couple of macros to help setting the alignment power field */
1552 #define ALIGN_SET(field,x,y) \
1553 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
1555 section->alignment_power = y;\
1558 #define ELIFALIGN_SET(field,x,y) \
1559 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
1561 section->alignment_power = y;\
1564 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1566 static void
1567 coff_set_alignment_hook (abfd, section, scnhdr)
1568 bfd * abfd ATTRIBUTE_UNUSED;
1569 asection * section;
1570 PTR scnhdr;
1572 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1574 ALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_64BYTES, 6)
1575 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_32BYTES, 5)
1576 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_16BYTES, 4)
1577 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_8BYTES, 3)
1578 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_4BYTES, 2)
1579 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_2BYTES, 1)
1580 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_1BYTES, 0)
1582 /* In a PE image file, the s_paddr field holds the virtual size of a
1583 section, while the s_size field holds the raw size. We also keep
1584 the original section flag value, since not every bit can be
1585 mapped onto a generic BFD section bit. */
1586 if (coff_section_data (abfd, section) == NULL)
1588 section->used_by_bfd =
1589 (PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata));
1590 if (section->used_by_bfd == NULL)
1592 /* FIXME: Return error. */
1593 abort ();
1596 if (pei_section_data (abfd, section) == NULL)
1598 coff_section_data (abfd, section)->tdata =
1599 (PTR) bfd_zalloc (abfd, sizeof (struct pei_section_tdata));
1600 if (coff_section_data (abfd, section)->tdata == NULL)
1602 /* FIXME: Return error. */
1603 abort ();
1606 pei_section_data (abfd, section)->virt_size = hdr->s_paddr;
1607 pei_section_data (abfd, section)->pe_flags = hdr->s_flags;
1609 section->lma = hdr->s_vaddr;
1611 #undef ALIGN_SET
1612 #undef ELIFALIGN_SET
1614 #else /* ! COFF_WITH_PE */
1615 #ifdef RS6000COFF_C
1617 /* We grossly abuse this function to handle XCOFF overflow headers.
1618 When we see one, we correct the reloc and line number counts in the
1619 real header, and remove the section we just created. */
1621 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1623 static void
1624 coff_set_alignment_hook (abfd, section, scnhdr)
1625 bfd *abfd;
1626 asection *section;
1627 PTR scnhdr;
1629 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1630 asection *real_sec;
1631 asection **ps;
1633 if ((hdr->s_flags & STYP_OVRFLO) == 0)
1634 return;
1636 real_sec = coff_section_from_bfd_index (abfd, hdr->s_nreloc);
1637 if (real_sec == NULL)
1638 return;
1640 real_sec->reloc_count = hdr->s_paddr;
1641 real_sec->lineno_count = hdr->s_vaddr;
1643 for (ps = &abfd->sections; *ps != NULL; ps = &(*ps)->next)
1645 if (*ps == section)
1647 *ps = (*ps)->next;
1648 --abfd->section_count;
1649 break;
1654 #else /* ! RS6000COFF_C */
1656 #define coff_set_alignment_hook \
1657 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1659 #endif /* ! RS6000COFF_C */
1660 #endif /* ! COFF_WITH_PE */
1661 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1663 #ifndef coff_mkobject
1665 static boolean coff_mkobject PARAMS ((bfd *));
1667 static boolean
1668 coff_mkobject (abfd)
1669 bfd * abfd;
1671 coff_data_type *coff;
1673 abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, sizeof (coff_data_type));
1674 if (abfd->tdata.coff_obj_data == 0)
1675 return false;
1676 coff = coff_data (abfd);
1677 coff->symbols = (coff_symbol_type *) NULL;
1678 coff->conversion_table = (unsigned int *) NULL;
1679 coff->raw_syments = (struct coff_ptr_struct *) NULL;
1680 coff->relocbase = 0;
1681 coff->local_toc_sym_map = 0;
1683 /* make_abs_section(abfd);*/
1685 return true;
1687 #endif
1689 /* Create the COFF backend specific information. */
1690 #ifndef coff_mkobject_hook
1691 static PTR
1692 coff_mkobject_hook (abfd, filehdr, aouthdr)
1693 bfd * abfd;
1694 PTR filehdr;
1695 PTR aouthdr ATTRIBUTE_UNUSED;
1697 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1698 coff_data_type *coff;
1700 if (coff_mkobject (abfd) == false)
1701 return NULL;
1703 coff = coff_data (abfd);
1705 coff->sym_filepos = internal_f->f_symptr;
1707 /* These members communicate important constants about the symbol
1708 table to GDB's symbol-reading code. These `constants'
1709 unfortunately vary among coff implementations... */
1710 coff->local_n_btmask = N_BTMASK;
1711 coff->local_n_btshft = N_BTSHFT;
1712 coff->local_n_tmask = N_TMASK;
1713 coff->local_n_tshift = N_TSHIFT;
1714 coff->local_symesz = bfd_coff_symesz (abfd);
1715 coff->local_auxesz = bfd_coff_auxesz (abfd);
1716 coff->local_linesz = bfd_coff_linesz (abfd);
1718 coff->timestamp = internal_f->f_timdat;
1720 obj_raw_syment_count (abfd) =
1721 obj_conv_table_size (abfd) =
1722 internal_f->f_nsyms;
1724 #ifdef RS6000COFF_C
1725 if ((internal_f->f_flags & F_SHROBJ) != 0)
1726 abfd->flags |= DYNAMIC;
1727 if (aouthdr != NULL && internal_f->f_opthdr >= bfd_coff_aoutsz (abfd))
1729 struct internal_aouthdr *internal_a =
1730 (struct internal_aouthdr *) aouthdr;
1731 struct xcoff_tdata *xcoff;
1733 xcoff = xcoff_data (abfd);
1734 xcoff->full_aouthdr = true;
1735 xcoff->toc = internal_a->o_toc;
1736 xcoff->sntoc = internal_a->o_sntoc;
1737 xcoff->snentry = internal_a->o_snentry;
1738 xcoff->text_align_power = internal_a->o_algntext;
1739 xcoff->data_align_power = internal_a->o_algndata;
1740 xcoff->modtype = internal_a->o_modtype;
1741 xcoff->cputype = internal_a->o_cputype;
1742 xcoff->maxdata = internal_a->o_maxdata;
1743 xcoff->maxstack = internal_a->o_maxstack;
1745 #endif
1747 #ifdef ARM
1748 /* Set the flags field from the COFF header read in */
1749 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
1750 coff->flags = 0;
1751 #endif
1753 #ifdef COFF_WITH_PE
1754 /* FIXME: I'm not sure this is ever executed, since peicode.h
1755 defines coff_mkobject_hook. */
1756 if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
1757 abfd->flags |= HAS_DEBUG;
1758 #endif
1760 return (PTR) coff;
1762 #endif
1764 /* Determine the machine architecture and type. FIXME: This is target
1765 dependent because the magic numbers are defined in the target
1766 dependent header files. But there is no particular need for this.
1767 If the magic numbers were moved to a separate file, this function
1768 would be target independent and would also be much more successful
1769 at linking together COFF files for different architectures. */
1771 static boolean
1772 coff_set_arch_mach_hook (abfd, filehdr)
1773 bfd *abfd;
1774 PTR filehdr;
1776 long machine;
1777 enum bfd_architecture arch;
1778 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1780 machine = 0;
1781 switch (internal_f->f_magic)
1783 #ifdef PPCMAGIC
1784 case PPCMAGIC:
1785 arch = bfd_arch_powerpc;
1786 machine = 0; /* what does this mean? (krk) */
1787 break;
1788 #endif
1789 #ifdef I386MAGIC
1790 case I386MAGIC:
1791 case I386PTXMAGIC:
1792 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */
1793 case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */
1794 arch = bfd_arch_i386;
1795 machine = 0;
1796 break;
1797 #endif
1798 #ifdef IA64MAGIC
1799 case IA64MAGIC:
1800 arch = bfd_arch_ia64;
1801 machine = 0;
1802 break;
1803 #endif
1804 #ifdef A29K_MAGIC_BIG
1805 case A29K_MAGIC_BIG:
1806 case A29K_MAGIC_LITTLE:
1807 arch = bfd_arch_a29k;
1808 machine = 0;
1809 break;
1810 #endif
1811 #ifdef ARMMAGIC
1812 case ARMMAGIC:
1813 case ARMPEMAGIC:
1814 case THUMBPEMAGIC:
1815 arch = bfd_arch_arm;
1816 switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK)
1818 case F_ARM_2: machine = bfd_mach_arm_2; break;
1819 case F_ARM_2a: machine = bfd_mach_arm_2a; break;
1820 case F_ARM_3: machine = bfd_mach_arm_3; break;
1821 default:
1822 case F_ARM_3M: machine = bfd_mach_arm_3M; break;
1823 case F_ARM_4: machine = bfd_mach_arm_4; break;
1824 case F_ARM_4T: machine = bfd_mach_arm_4T; break;
1825 case F_ARM_5: machine = bfd_mach_arm_5; break;
1827 break;
1828 #endif
1829 #ifdef MC68MAGIC
1830 case MC68MAGIC:
1831 case M68MAGIC:
1832 #ifdef MC68KBCSMAGIC
1833 case MC68KBCSMAGIC:
1834 #endif
1835 #ifdef APOLLOM68KMAGIC
1836 case APOLLOM68KMAGIC:
1837 #endif
1838 #ifdef LYNXCOFFMAGIC
1839 case LYNXCOFFMAGIC:
1840 #endif
1841 arch = bfd_arch_m68k;
1842 machine = bfd_mach_m68020;
1843 break;
1844 #endif
1845 #ifdef MC88MAGIC
1846 case MC88MAGIC:
1847 case MC88DMAGIC:
1848 case MC88OMAGIC:
1849 arch = bfd_arch_m88k;
1850 machine = 88100;
1851 break;
1852 #endif
1853 #ifdef Z8KMAGIC
1854 case Z8KMAGIC:
1855 arch = bfd_arch_z8k;
1856 switch (internal_f->f_flags & F_MACHMASK)
1858 case F_Z8001:
1859 machine = bfd_mach_z8001;
1860 break;
1861 case F_Z8002:
1862 machine = bfd_mach_z8002;
1863 break;
1864 default:
1865 return false;
1867 break;
1868 #endif
1869 #ifdef I860
1870 case I860MAGIC:
1871 arch = bfd_arch_i860;
1872 break;
1873 #endif
1874 #ifdef I960
1875 #ifdef I960ROMAGIC
1876 case I960ROMAGIC:
1877 case I960RWMAGIC:
1878 arch = bfd_arch_i960;
1879 switch (F_I960TYPE & internal_f->f_flags)
1881 default:
1882 case F_I960CORE:
1883 machine = bfd_mach_i960_core;
1884 break;
1885 case F_I960KB:
1886 machine = bfd_mach_i960_kb_sb;
1887 break;
1888 case F_I960MC:
1889 machine = bfd_mach_i960_mc;
1890 break;
1891 case F_I960XA:
1892 machine = bfd_mach_i960_xa;
1893 break;
1894 case F_I960CA:
1895 machine = bfd_mach_i960_ca;
1896 break;
1897 case F_I960KA:
1898 machine = bfd_mach_i960_ka_sa;
1899 break;
1900 case F_I960JX:
1901 machine = bfd_mach_i960_jx;
1902 break;
1903 case F_I960HX:
1904 machine = bfd_mach_i960_hx;
1905 break;
1907 break;
1908 #endif
1909 #endif
1911 #ifdef RS6000COFF_C
1912 #ifdef XCOFF64
1913 case U803XTOCMAGIC:
1914 #else
1915 case U802ROMAGIC:
1916 case U802WRMAGIC:
1917 case U802TOCMAGIC:
1918 #endif
1920 int cputype;
1922 if (xcoff_data (abfd)->cputype != -1)
1923 cputype = xcoff_data (abfd)->cputype & 0xff;
1924 else
1926 /* We did not get a value from the a.out header. If the
1927 file has not been stripped, we may be able to get the
1928 architecture information from the first symbol, if it
1929 is a .file symbol. */
1930 if (obj_raw_syment_count (abfd) == 0)
1931 cputype = 0;
1932 else
1934 bfd_byte *buf;
1935 struct internal_syment sym;
1937 buf = (bfd_byte *) bfd_malloc (bfd_coff_symesz (abfd));
1938 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1939 || (bfd_read (buf, 1, bfd_coff_symesz (abfd), abfd)
1940 != bfd_coff_symesz (abfd)))
1942 free (buf);
1943 return false;
1945 bfd_coff_swap_sym_in (abfd, (PTR) buf, (PTR) &sym);
1946 if (sym.n_sclass == C_FILE)
1947 cputype = sym.n_type & 0xff;
1948 else
1949 cputype = 0;
1950 free (buf);
1954 /* FIXME: We don't handle all cases here. */
1955 switch (cputype)
1957 default:
1958 case 0:
1959 #ifdef POWERMAC
1960 /* PowerPC Macs use the same magic numbers as RS/6000
1961 (because that's how they were bootstrapped originally),
1962 but they are always PowerPC architecture. */
1963 arch = bfd_arch_powerpc;
1964 machine = 0;
1965 #else
1966 arch = bfd_arch_rs6000;
1967 #ifdef XCOFF64
1968 machine = 620;
1969 #else
1970 machine = 6000;
1971 #endif
1972 #endif /* POWERMAC */
1973 break;
1975 case 1:
1976 arch = bfd_arch_powerpc;
1977 machine = 601;
1978 break;
1979 case 2: /* 64 bit PowerPC */
1980 arch = bfd_arch_powerpc;
1981 machine = 620;
1982 break;
1983 case 3:
1984 arch = bfd_arch_powerpc;
1985 machine = 0;
1986 break;
1987 case 4:
1988 arch = bfd_arch_rs6000;
1989 machine = 6000;
1990 break;
1993 break;
1994 #endif
1996 #ifdef WE32KMAGIC
1997 case WE32KMAGIC:
1998 arch = bfd_arch_we32k;
1999 machine = 0;
2000 break;
2001 #endif
2003 #ifdef H8300MAGIC
2004 case H8300MAGIC:
2005 arch = bfd_arch_h8300;
2006 machine = bfd_mach_h8300;
2007 /* !! FIXME this probably isn't the right place for this */
2008 abfd->flags |= BFD_IS_RELAXABLE;
2009 break;
2010 #endif
2012 #ifdef H8300HMAGIC
2013 case H8300HMAGIC:
2014 arch = bfd_arch_h8300;
2015 machine = bfd_mach_h8300h;
2016 /* !! FIXME this probably isn't the right place for this */
2017 abfd->flags |= BFD_IS_RELAXABLE;
2018 break;
2019 #endif
2021 #ifdef H8300SMAGIC
2022 case H8300SMAGIC:
2023 arch = bfd_arch_h8300;
2024 machine = bfd_mach_h8300s;
2025 /* !! FIXME this probably isn't the right place for this */
2026 abfd->flags |= BFD_IS_RELAXABLE;
2027 break;
2028 #endif
2030 #ifdef SH_ARCH_MAGIC_BIG
2031 case SH_ARCH_MAGIC_BIG:
2032 case SH_ARCH_MAGIC_LITTLE:
2033 #ifdef COFF_WITH_PE
2034 case SH_ARCH_MAGIC_WINCE:
2035 #endif
2036 arch = bfd_arch_sh;
2037 machine = 0;
2038 break;
2039 #endif
2041 #ifdef MIPS_ARCH_MAGIC_WINCE
2042 case MIPS_ARCH_MAGIC_WINCE:
2043 arch = bfd_arch_mips;
2044 machine = 0;
2045 break;
2046 #endif
2048 #ifdef H8500MAGIC
2049 case H8500MAGIC:
2050 arch = bfd_arch_h8500;
2051 machine = 0;
2052 break;
2053 #endif
2055 #ifdef SPARCMAGIC
2056 case SPARCMAGIC:
2057 #ifdef LYNXCOFFMAGIC
2058 case LYNXCOFFMAGIC:
2059 #endif
2060 arch = bfd_arch_sparc;
2061 machine = 0;
2062 break;
2063 #endif
2065 #ifdef TIC30MAGIC
2066 case TIC30MAGIC:
2067 arch = bfd_arch_tic30;
2068 break;
2069 #endif
2071 #ifdef TICOFF0MAGIC
2072 #ifdef TICOFF_TARGET_ARCH
2073 /* this TI COFF section should be used by all new TI COFF v0 targets */
2074 case TICOFF0MAGIC:
2075 arch = TICOFF_TARGET_ARCH;
2076 break;
2077 #endif
2078 #endif
2080 #ifdef TICOFF1MAGIC
2081 /* this TI COFF section should be used by all new TI COFF v1/2 targets */
2082 /* TI COFF1 and COFF2 use the target_id field to specify which arch */
2083 case TICOFF1MAGIC:
2084 case TICOFF2MAGIC:
2085 switch (internal_f->f_target_id)
2087 #ifdef TI_TARGET_ID
2088 case TI_TARGET_ID:
2089 arch = TICOFF_TARGET_ARCH;
2090 break;
2091 #endif
2092 default:
2093 arch = bfd_arch_obscure;
2094 (*_bfd_error_handler)
2095 (_("Unrecognized TI COFF target id '0x%x'"),
2096 internal_f->f_target_id);
2097 break;
2099 break;
2100 #endif
2102 #ifdef TIC80_ARCH_MAGIC
2103 case TIC80_ARCH_MAGIC:
2104 arch = bfd_arch_tic80;
2105 break;
2106 #endif
2108 #ifdef MCOREMAGIC
2109 case MCOREMAGIC:
2110 arch = bfd_arch_mcore;
2111 break;
2112 #endif
2113 default: /* Unreadable input file type */
2114 arch = bfd_arch_obscure;
2115 break;
2118 bfd_default_set_arch_mach (abfd, arch, machine);
2119 return true;
2122 #ifdef SYMNAME_IN_DEBUG
2124 static boolean symname_in_debug_hook
2125 PARAMS ((bfd *, struct internal_syment *));
2127 static boolean
2128 symname_in_debug_hook (abfd, sym)
2129 bfd * abfd ATTRIBUTE_UNUSED;
2130 struct internal_syment *sym;
2132 return SYMNAME_IN_DEBUG (sym) ? true : false;
2135 #else
2137 #define symname_in_debug_hook \
2138 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2140 #endif
2142 #ifdef RS6000COFF_C
2144 #ifdef XCOFF64
2145 #define FORCE_SYMNAMES_IN_STRINGS
2146 #endif
2148 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2150 static boolean coff_pointerize_aux_hook
2151 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2152 unsigned int, combined_entry_type *));
2154 /*ARGSUSED*/
2155 static boolean
2156 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2157 bfd *abfd ATTRIBUTE_UNUSED;
2158 combined_entry_type *table_base;
2159 combined_entry_type *symbol;
2160 unsigned int indaux;
2161 combined_entry_type *aux;
2163 int class = symbol->u.syment.n_sclass;
2165 if ((class == C_EXT || class == C_HIDEXT)
2166 && indaux + 1 == symbol->u.syment.n_numaux)
2168 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2170 aux->u.auxent.x_csect.x_scnlen.p =
2171 table_base + aux->u.auxent.x_csect.x_scnlen.l;
2172 aux->fix_scnlen = 1;
2175 /* Return true to indicate that the caller should not do any
2176 further work on this auxent. */
2177 return true;
2180 /* Return false to indicate that this auxent should be handled by
2181 the caller. */
2182 return false;
2185 #else
2186 #ifdef I960
2188 /* We don't want to pointerize bal entries. */
2190 static boolean coff_pointerize_aux_hook
2191 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2192 unsigned int, combined_entry_type *));
2194 /*ARGSUSED*/
2195 static boolean
2196 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2197 bfd *abfd ATTRIBUTE_UNUSED;
2198 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2199 combined_entry_type *symbol;
2200 unsigned int indaux;
2201 combined_entry_type *aux ATTRIBUTE_UNUSED;
2203 /* Return true if we don't want to pointerize this aux entry, which
2204 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2205 return (indaux == 1
2206 && (symbol->u.syment.n_sclass == C_LEAFPROC
2207 || symbol->u.syment.n_sclass == C_LEAFSTAT
2208 || symbol->u.syment.n_sclass == C_LEAFEXT));
2211 #else /* ! I960 */
2213 #define coff_pointerize_aux_hook 0
2215 #endif /* ! I960 */
2216 #endif /* ! RS6000COFF_C */
2218 /* Print an aux entry. This returns true if it has printed it. */
2220 static boolean coff_print_aux
2221 PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
2222 combined_entry_type *, unsigned int));
2224 static boolean
2225 coff_print_aux (abfd, file, table_base, symbol, aux, indaux)
2226 bfd *abfd ATTRIBUTE_UNUSED;
2227 FILE *file ATTRIBUTE_UNUSED;
2228 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2229 combined_entry_type *symbol ATTRIBUTE_UNUSED;
2230 combined_entry_type *aux ATTRIBUTE_UNUSED;
2231 unsigned int indaux ATTRIBUTE_UNUSED;
2233 #ifdef RS6000COFF_C
2234 if ((symbol->u.syment.n_sclass == C_EXT
2235 || symbol->u.syment.n_sclass == C_HIDEXT)
2236 && indaux + 1 == symbol->u.syment.n_numaux)
2238 /* This is a csect entry. */
2239 fprintf (file, "AUX ");
2240 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
2242 BFD_ASSERT (! aux->fix_scnlen);
2243 fprintf (file, "val %5ld", aux->u.auxent.x_csect.x_scnlen.l);
2245 else
2247 fprintf (file, "indx ");
2248 if (! aux->fix_scnlen)
2249 fprintf (file, "%4ld", aux->u.auxent.x_csect.x_scnlen.l);
2250 else
2251 fprintf (file, "%4ld",
2252 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
2254 fprintf (file,
2255 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2256 aux->u.auxent.x_csect.x_parmhash,
2257 (unsigned int) aux->u.auxent.x_csect.x_snhash,
2258 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
2259 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
2260 (unsigned int) aux->u.auxent.x_csect.x_smclas,
2261 aux->u.auxent.x_csect.x_stab,
2262 (unsigned int) aux->u.auxent.x_csect.x_snstab);
2263 return true;
2265 #endif
2267 /* Return false to indicate that no special action was taken. */
2268 return false;
2272 SUBSUBSECTION
2273 Writing relocations
2275 To write relocations, the back end steps though the
2276 canonical relocation table and create an
2277 @code{internal_reloc}. The symbol index to use is removed from
2278 the @code{offset} field in the symbol table supplied. The
2279 address comes directly from the sum of the section base
2280 address and the relocation offset; the type is dug directly
2281 from the howto field. Then the @code{internal_reloc} is
2282 swapped into the shape of an @code{external_reloc} and written
2283 out to disk.
2287 #ifdef TARG_AUX
2289 static int compare_arelent_ptr PARAMS ((const PTR, const PTR));
2291 /* AUX's ld wants relocations to be sorted */
2292 static int
2293 compare_arelent_ptr (x, y)
2294 const PTR x;
2295 const PTR y;
2297 const arelent **a = (const arelent **) x;
2298 const arelent **b = (const arelent **) y;
2299 bfd_size_type aadr = (*a)->address;
2300 bfd_size_type badr = (*b)->address;
2302 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
2305 #endif /* TARG_AUX */
2307 static boolean
2308 coff_write_relocs (abfd, first_undef)
2309 bfd * abfd;
2310 int first_undef;
2312 asection *s;
2314 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
2316 unsigned int i;
2317 struct external_reloc dst;
2318 arelent **p;
2320 #ifndef TARG_AUX
2321 p = s->orelocation;
2322 #else
2323 /* sort relocations before we write them out */
2324 p = (arelent **) bfd_malloc (s->reloc_count * sizeof (arelent *));
2325 if (p == NULL && s->reloc_count > 0)
2326 return false;
2327 memcpy (p, s->orelocation, s->reloc_count * sizeof (arelent *));
2328 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
2329 #endif
2331 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
2332 return false;
2333 for (i = 0; i < s->reloc_count; i++)
2335 struct internal_reloc n;
2336 arelent *q = p[i];
2337 memset ((PTR) & n, 0, sizeof (n));
2339 /* Now we've renumbered the symbols we know where the
2340 undefined symbols live in the table. Check the reloc
2341 entries for symbols who's output bfd isn't the right one.
2342 This is because the symbol was undefined (which means
2343 that all the pointers are never made to point to the same
2344 place). This is a bad thing,'cause the symbols attached
2345 to the output bfd are indexed, so that the relocation
2346 entries know which symbol index they point to. So we
2347 have to look up the output symbol here. */
2349 if (q->sym_ptr_ptr[0]->the_bfd != abfd)
2351 int i;
2352 const char *sname = q->sym_ptr_ptr[0]->name;
2353 asymbol **outsyms = abfd->outsymbols;
2354 for (i = first_undef; outsyms[i]; i++)
2356 const char *intable = outsyms[i]->name;
2357 if (strcmp (intable, sname) == 0) {
2358 /* got a hit, so repoint the reloc */
2359 q->sym_ptr_ptr = outsyms + i;
2360 break;
2365 n.r_vaddr = q->address + s->vma;
2367 #ifdef R_IHCONST
2368 /* The 29k const/consth reloc pair is a real kludge. The consth
2369 part doesn't have a symbol; it has an offset. So rebuilt
2370 that here. */
2371 if (q->howto->type == R_IHCONST)
2372 n.r_symndx = q->addend;
2373 else
2374 #endif
2375 if (q->sym_ptr_ptr)
2377 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2378 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q,s))
2379 #else
2380 if (q->sym_ptr_ptr == bfd_abs_section_ptr->symbol_ptr_ptr)
2381 #endif
2382 /* This is a relocation relative to the absolute symbol. */
2383 n.r_symndx = -1;
2384 else
2386 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
2387 /* Take notice if the symbol reloc points to a symbol
2388 we don't have in our symbol table. What should we
2389 do for this?? */
2390 if (n.r_symndx > obj_conv_table_size (abfd))
2391 abort ();
2395 #ifdef SWAP_OUT_RELOC_OFFSET
2396 n.r_offset = q->addend;
2397 #endif
2399 #ifdef SELECT_RELOC
2400 /* Work out reloc type from what is required */
2401 SELECT_RELOC (n, q->howto);
2402 #else
2403 n.r_type = q->howto->type;
2404 #endif
2405 coff_swap_reloc_out (abfd, &n, &dst);
2406 if (bfd_write ((PTR) & dst, 1, bfd_coff_relsz (abfd), abfd)
2407 != bfd_coff_relsz (abfd))
2408 return false;
2411 #ifdef TARG_AUX
2412 if (p != NULL)
2413 free (p);
2414 #endif
2417 return true;
2420 /* Set flags and magic number of a coff file from architecture and machine
2421 type. Result is true if we can represent the arch&type, false if not. */
2423 static boolean
2424 coff_set_flags (abfd, magicp, flagsp)
2425 bfd * abfd;
2426 unsigned int *magicp ATTRIBUTE_UNUSED;
2427 unsigned short *flagsp ATTRIBUTE_UNUSED;
2429 switch (bfd_get_arch (abfd))
2431 #ifdef Z8KMAGIC
2432 case bfd_arch_z8k:
2433 *magicp = Z8KMAGIC;
2434 switch (bfd_get_mach (abfd))
2436 case bfd_mach_z8001:
2437 *flagsp = F_Z8001;
2438 break;
2439 case bfd_mach_z8002:
2440 *flagsp = F_Z8002;
2441 break;
2442 default:
2443 return false;
2445 return true;
2446 #endif
2447 #ifdef I960ROMAGIC
2449 case bfd_arch_i960:
2452 unsigned flags;
2453 *magicp = I960ROMAGIC;
2455 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2456 I960RWMAGIC); FIXME???
2458 switch (bfd_get_mach (abfd))
2460 case bfd_mach_i960_core:
2461 flags = F_I960CORE;
2462 break;
2463 case bfd_mach_i960_kb_sb:
2464 flags = F_I960KB;
2465 break;
2466 case bfd_mach_i960_mc:
2467 flags = F_I960MC;
2468 break;
2469 case bfd_mach_i960_xa:
2470 flags = F_I960XA;
2471 break;
2472 case bfd_mach_i960_ca:
2473 flags = F_I960CA;
2474 break;
2475 case bfd_mach_i960_ka_sa:
2476 flags = F_I960KA;
2477 break;
2478 case bfd_mach_i960_jx:
2479 flags = F_I960JX;
2480 break;
2481 case bfd_mach_i960_hx:
2482 flags = F_I960HX;
2483 break;
2484 default:
2485 return false;
2487 *flagsp = flags;
2488 return true;
2490 break;
2491 #endif
2493 #ifdef TIC30MAGIC
2494 case bfd_arch_tic30:
2495 *magicp = TIC30MAGIC;
2496 return true;
2497 #endif
2499 #ifdef TICOFF_DEFAULT_MAGIC
2500 case TICOFF_TARGET_ARCH:
2501 /* if there's no indication of which version we want, use the default */
2502 if (!abfd->xvec )
2503 *magicp = TICOFF_DEFAULT_MAGIC;
2504 else
2506 /* we may want to output in a different COFF version */
2507 switch (abfd->xvec->name[4])
2509 case '0':
2510 *magicp = TICOFF0MAGIC;
2511 break;
2512 case '1':
2513 *magicp = TICOFF1MAGIC;
2514 break;
2515 case '2':
2516 *magicp = TICOFF2MAGIC;
2517 break;
2518 default:
2519 return false;
2522 return true;
2523 #endif
2525 #ifdef TIC80_ARCH_MAGIC
2526 case bfd_arch_tic80:
2527 *magicp = TIC80_ARCH_MAGIC;
2528 return true;
2529 #endif
2530 #ifdef ARMMAGIC
2531 case bfd_arch_arm:
2532 #ifdef ARM_WINCE
2533 * magicp = ARMPEMAGIC;
2534 #else
2535 * magicp = ARMMAGIC;
2536 #endif
2537 * flagsp = 0;
2538 if (APCS_SET (abfd))
2540 if (APCS_26_FLAG (abfd))
2541 * flagsp |= F_APCS26;
2543 if (APCS_FLOAT_FLAG (abfd))
2544 * flagsp |= F_APCS_FLOAT;
2546 if (PIC_FLAG (abfd))
2547 * flagsp |= F_PIC;
2549 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2550 * flagsp |= F_INTERWORK;
2551 switch (bfd_get_mach (abfd))
2553 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2554 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2555 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2556 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2557 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2558 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2559 case bfd_mach_arm_5: * flagsp |= F_ARM_5; break;
2560 case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break; /* XXX - we do not have an F_ARM_5T */
2562 return true;
2563 #endif
2564 #ifdef PPCMAGIC
2565 case bfd_arch_powerpc:
2566 *magicp = PPCMAGIC;
2567 return true;
2568 break;
2569 #endif
2570 #ifdef I386MAGIC
2571 case bfd_arch_i386:
2572 *magicp = I386MAGIC;
2573 #ifdef LYNXOS
2574 /* Just overwrite the usual value if we're doing Lynx. */
2575 *magicp = LYNXCOFFMAGIC;
2576 #endif
2577 return true;
2578 break;
2579 #endif
2580 #ifdef I860MAGIC
2581 case bfd_arch_i860:
2582 *magicp = I860MAGIC;
2583 return true;
2584 break;
2585 #endif
2586 #ifdef IA64MAGIC
2587 case bfd_arch_ia64:
2588 *magicp = IA64MAGIC;
2589 return true;
2590 break;
2591 #endif
2592 #ifdef MC68MAGIC
2593 case bfd_arch_m68k:
2594 #ifdef APOLLOM68KMAGIC
2595 *magicp = APOLLO_COFF_VERSION_NUMBER;
2596 #else
2597 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2598 #ifdef NAMES_HAVE_UNDERSCORE
2599 *magicp = MC68KBCSMAGIC;
2600 #else
2601 *magicp = MC68MAGIC;
2602 #endif
2603 #endif
2604 #ifdef LYNXOS
2605 /* Just overwrite the usual value if we're doing Lynx. */
2606 *magicp = LYNXCOFFMAGIC;
2607 #endif
2608 return true;
2609 break;
2610 #endif
2612 #ifdef MC88MAGIC
2613 case bfd_arch_m88k:
2614 *magicp = MC88OMAGIC;
2615 return true;
2616 break;
2617 #endif
2618 #ifdef H8300MAGIC
2619 case bfd_arch_h8300:
2620 switch (bfd_get_mach (abfd))
2622 case bfd_mach_h8300:
2623 *magicp = H8300MAGIC;
2624 return true;
2625 case bfd_mach_h8300h:
2626 *magicp = H8300HMAGIC;
2627 return true;
2628 case bfd_mach_h8300s:
2629 *magicp = H8300SMAGIC;
2630 return true;
2632 break;
2633 #endif
2635 #ifdef SH_ARCH_MAGIC_BIG
2636 case bfd_arch_sh:
2637 #ifdef COFF_IMAGE_WITH_PE
2638 *magicp = SH_ARCH_MAGIC_WINCE;
2639 #else
2640 if (bfd_big_endian (abfd))
2641 *magicp = SH_ARCH_MAGIC_BIG;
2642 else
2643 *magicp = SH_ARCH_MAGIC_LITTLE;
2644 #endif
2645 return true;
2646 break;
2647 #endif
2649 #ifdef MIPS_ARCH_MAGIC_WINCE
2650 case bfd_arch_mips:
2651 *magicp = MIPS_ARCH_MAGIC_WINCE;
2652 return true;
2653 break;
2654 #endif
2656 #ifdef SPARCMAGIC
2657 case bfd_arch_sparc:
2658 *magicp = SPARCMAGIC;
2659 #ifdef LYNXOS
2660 /* Just overwrite the usual value if we're doing Lynx. */
2661 *magicp = LYNXCOFFMAGIC;
2662 #endif
2663 return true;
2664 break;
2665 #endif
2667 #ifdef H8500MAGIC
2668 case bfd_arch_h8500:
2669 *magicp = H8500MAGIC;
2670 return true;
2671 break;
2672 #endif
2673 #ifdef A29K_MAGIC_BIG
2674 case bfd_arch_a29k:
2675 if (bfd_big_endian (abfd))
2676 *magicp = A29K_MAGIC_BIG;
2677 else
2678 *magicp = A29K_MAGIC_LITTLE;
2679 return true;
2680 break;
2681 #endif
2683 #ifdef WE32KMAGIC
2684 case bfd_arch_we32k:
2685 *magicp = WE32KMAGIC;
2686 return true;
2687 break;
2688 #endif
2690 #ifdef RS6000COFF_C
2691 case bfd_arch_rs6000:
2692 #ifndef PPCMAGIC
2693 case bfd_arch_powerpc:
2694 #endif
2695 #ifdef XCOFF64
2696 if (bfd_get_mach (abfd) == 620 && !strncmp (abfd->xvec->name,"aix", 3))
2697 *magicp = U803XTOCMAGIC;
2698 else
2699 #else
2700 *magicp = U802TOCMAGIC;
2701 #endif
2702 return true;
2703 break;
2704 #endif
2706 #ifdef MCOREMAGIC
2707 case bfd_arch_mcore:
2708 * magicp = MCOREMAGIC;
2709 return true;
2710 #endif
2712 default: /* Unknown architecture */
2713 /* return false; -- fall through to "return false" below, to avoid
2714 "statement never reached" errors on the one below. */
2715 break;
2718 return false;
2722 static boolean
2723 coff_set_arch_mach (abfd, arch, machine)
2724 bfd * abfd;
2725 enum bfd_architecture arch;
2726 unsigned long machine;
2728 unsigned dummy1;
2729 unsigned short dummy2;
2731 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2732 return false;
2734 if (arch != bfd_arch_unknown &&
2735 coff_set_flags (abfd, &dummy1, &dummy2) != true)
2736 return false; /* We can't represent this type */
2738 return true; /* We're easy ... */
2741 #ifdef COFF_IMAGE_WITH_PE
2743 /* This is used to sort sections by VMA, as required by PE image
2744 files. */
2746 static int sort_by_secaddr PARAMS ((const PTR, const PTR));
2748 static int
2749 sort_by_secaddr (arg1, arg2)
2750 const PTR arg1;
2751 const PTR arg2;
2753 const asection *a = *(const asection **) arg1;
2754 const asection *b = *(const asection **) arg2;
2756 if (a->vma < b->vma)
2757 return -1;
2758 else if (a->vma > b->vma)
2759 return 1;
2760 else
2761 return 0;
2764 #endif /* COFF_IMAGE_WITH_PE */
2766 /* Calculate the file position for each section. */
2768 #ifndef I960
2769 #define ALIGN_SECTIONS_IN_FILE
2770 #endif
2771 #if defined(TIC80COFF) || defined(TICOFF)
2772 #undef ALIGN_SECTIONS_IN_FILE
2773 #endif
2775 static boolean
2776 coff_compute_section_file_positions (abfd)
2777 bfd * abfd;
2779 asection *current;
2780 asection *previous = (asection *) NULL;
2781 file_ptr sofar = bfd_coff_filhsz (abfd);
2782 boolean align_adjust;
2783 #ifdef ALIGN_SECTIONS_IN_FILE
2784 file_ptr old_sofar;
2785 #endif
2787 #ifdef RS6000COFF_C
2788 /* On XCOFF, if we have symbols, set up the .debug section. */
2789 if (bfd_get_symcount (abfd) > 0)
2791 bfd_size_type sz;
2792 bfd_size_type i, symcount;
2793 asymbol **symp;
2795 sz = 0;
2796 symcount = bfd_get_symcount (abfd);
2797 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
2799 coff_symbol_type *cf;
2801 cf = coff_symbol_from (abfd, *symp);
2802 if (cf != NULL
2803 && cf->native != NULL
2804 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
2806 size_t len;
2808 len = strlen (bfd_asymbol_name (*symp));
2809 if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd))
2810 sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd);
2813 if (sz > 0)
2815 asection *dsec;
2817 dsec = bfd_make_section_old_way (abfd, ".debug");
2818 if (dsec == NULL)
2819 abort ();
2820 dsec->_raw_size = sz;
2821 dsec->flags |= SEC_HAS_CONTENTS;
2824 #endif
2826 #ifdef COFF_IMAGE_WITH_PE
2827 int page_size;
2828 if (coff_data (abfd)->link_info)
2830 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
2832 else
2833 page_size = PE_DEF_FILE_ALIGNMENT;
2834 #else
2835 #ifdef COFF_PAGE_SIZE
2836 int page_size = COFF_PAGE_SIZE;
2837 #endif
2838 #endif
2840 if (bfd_get_start_address (abfd))
2842 /* A start address may have been added to the original file. In this
2843 case it will need an optional header to record it. */
2844 abfd->flags |= EXEC_P;
2847 if (abfd->flags & EXEC_P)
2848 sofar += bfd_coff_aoutsz (abfd);
2849 #ifdef RS6000COFF_C
2850 else if (xcoff_data (abfd)->full_aouthdr)
2851 sofar += bfd_coff_aoutsz (abfd);
2852 else
2853 sofar += SMALL_AOUTSZ;
2854 #endif
2856 sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
2858 #ifdef RS6000COFF_C
2859 /* XCOFF handles overflows in the reloc and line number count fields
2860 by allocating a new section header to hold the correct counts. */
2861 for (current = abfd->sections; current != NULL; current = current->next)
2862 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2863 sofar += bfd_coff_scnhsz (abfd);
2864 #endif
2866 #ifdef COFF_IMAGE_WITH_PE
2868 /* PE requires the sections to be in memory order when listed in
2869 the section headers. It also does not like empty loadable
2870 sections. The sections apparently do not have to be in the
2871 right order in the image file itself, but we do need to get the
2872 target_index values right. */
2874 int count;
2875 asection **section_list;
2876 int i;
2877 int target_index;
2879 count = 0;
2880 for (current = abfd->sections; current != NULL; current = current->next)
2881 ++count;
2883 /* We allocate an extra cell to simplify the final loop. */
2884 section_list = bfd_malloc (sizeof (struct asection *) * (count + 1));
2885 if (section_list == NULL)
2886 return false;
2888 i = 0;
2889 for (current = abfd->sections; current != NULL; current = current->next)
2891 section_list[i] = current;
2892 ++i;
2894 section_list[i] = NULL;
2896 qsort (section_list, count, sizeof (asection *), sort_by_secaddr);
2898 /* Rethread the linked list into sorted order; at the same time,
2899 assign target_index values. */
2900 target_index = 1;
2901 abfd->sections = section_list[0];
2902 for (i = 0; i < count; i++)
2904 current = section_list[i];
2905 current->next = section_list[i + 1];
2907 /* Later, if the section has zero size, we'll be throwing it
2908 away, so we don't want to number it now. Note that having
2909 a zero size and having real contents are different
2910 concepts: .bss has no contents, but (usually) non-zero
2911 size. */
2912 if (current->_raw_size == 0)
2914 /* Discard. However, it still might have (valid) symbols
2915 in it, so arbitrarily set it to section 1 (indexing is
2916 1-based here; usually .text). __end__ and other
2917 contents of .endsection really have this happen.
2918 FIXME: This seems somewhat dubious. */
2919 current->target_index = 1;
2921 else
2922 current->target_index = target_index++;
2925 free (section_list);
2927 #else /* ! COFF_IMAGE_WITH_PE */
2929 /* Set the target_index field. */
2930 int target_index;
2932 target_index = 1;
2933 for (current = abfd->sections; current != NULL; current = current->next)
2934 current->target_index = target_index++;
2936 #endif /* ! COFF_IMAGE_WITH_PE */
2938 align_adjust = false;
2939 for (current = abfd->sections;
2940 current != (asection *) NULL;
2941 current = current->next)
2943 #ifdef COFF_IMAGE_WITH_PE
2944 /* With PE we have to pad each section to be a multiple of its
2945 page size too, and remember both sizes. */
2946 if (coff_section_data (abfd, current) == NULL)
2948 current->used_by_bfd =
2949 (PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata));
2950 if (current->used_by_bfd == NULL)
2951 return false;
2953 if (pei_section_data (abfd, current) == NULL)
2955 coff_section_data (abfd, current)->tdata =
2956 (PTR) bfd_zalloc (abfd, sizeof (struct pei_section_tdata));
2957 if (coff_section_data (abfd, current)->tdata == NULL)
2958 return false;
2960 if (pei_section_data (abfd, current)->virt_size == 0)
2961 pei_section_data (abfd, current)->virt_size = current->_raw_size;
2962 #endif
2964 /* Only deal with sections which have contents. */
2965 if (!(current->flags & SEC_HAS_CONTENTS))
2966 continue;
2968 #ifdef COFF_IMAGE_WITH_PE
2969 /* Make sure we skip empty sections in a PE image. */
2970 if (current->_raw_size == 0)
2971 continue;
2972 #endif
2974 /* Align the sections in the file to the same boundary on
2975 which they are aligned in virtual memory. I960 doesn't
2976 do this (FIXME) so we can stay in sync with Intel. 960
2977 doesn't yet page from files... */
2978 #ifdef ALIGN_SECTIONS_IN_FILE
2979 if ((abfd->flags & EXEC_P) != 0)
2981 /* make sure this section is aligned on the right boundary - by
2982 padding the previous section up if necessary */
2984 old_sofar = sofar;
2985 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
2986 if (previous != (asection *) NULL)
2988 previous->_raw_size += sofar - old_sofar;
2992 #endif
2994 /* In demand paged files the low order bits of the file offset
2995 must match the low order bits of the virtual address. */
2996 #ifdef COFF_PAGE_SIZE
2997 if ((abfd->flags & D_PAGED) != 0
2998 && (current->flags & SEC_ALLOC) != 0)
2999 sofar += (current->vma - sofar) % page_size;
3000 #endif
3001 current->filepos = sofar;
3003 #ifdef COFF_IMAGE_WITH_PE
3004 /* Set the padded size. */
3005 current->_raw_size = (current->_raw_size + page_size -1) & -page_size;
3006 #endif
3008 sofar += current->_raw_size;
3010 #ifdef ALIGN_SECTIONS_IN_FILE
3011 /* make sure that this section is of the right size too */
3012 if ((abfd->flags & EXEC_P) == 0)
3014 bfd_size_type old_size;
3016 old_size = current->_raw_size;
3017 current->_raw_size = BFD_ALIGN (current->_raw_size,
3018 1 << current->alignment_power);
3019 align_adjust = current->_raw_size != old_size;
3020 sofar += current->_raw_size - old_size;
3022 else
3024 old_sofar = sofar;
3025 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3026 align_adjust = sofar != old_sofar;
3027 current->_raw_size += sofar - old_sofar;
3029 #endif
3031 #ifdef COFF_IMAGE_WITH_PE
3032 /* For PE we need to make sure we pad out to the aligned
3033 _raw_size, in case the caller only writes out data to the
3034 unaligned _raw_size. */
3035 if (pei_section_data (abfd, current)->virt_size < current->_raw_size)
3036 align_adjust = true;
3037 #endif
3039 #ifdef _LIB
3040 /* Force .lib sections to start at zero. The vma is then
3041 incremented in coff_set_section_contents. This is right for
3042 SVR3.2. */
3043 if (strcmp (current->name, _LIB) == 0)
3044 bfd_set_section_vma (abfd, current, 0);
3045 #endif
3047 previous = current;
3050 /* It is now safe to write to the output file. If we needed an
3051 alignment adjustment for the last section, then make sure that
3052 there is a byte at offset sofar. If there are no symbols and no
3053 relocs, then nothing follows the last section. If we don't force
3054 the last byte out, then the file may appear to be truncated. */
3055 if (align_adjust)
3057 bfd_byte b;
3059 b = 0;
3060 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
3061 || bfd_write (&b, 1, 1, abfd) != 1)
3062 return false;
3065 /* Make sure the relocations are aligned. We don't need to make
3066 sure that this byte exists, because it will only matter if there
3067 really are relocs. */
3068 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
3070 obj_relocbase (abfd) = sofar;
3071 abfd->output_has_begun = true;
3073 return true;
3076 #if 0
3078 /* This can never work, because it is called too late--after the
3079 section positions have been set. I can't figure out what it is
3080 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3082 /* If .file, .text, .data, .bss symbols are missing, add them. */
3083 /* @@ Should we only be adding missing symbols, or overriding the aux
3084 values for existing section symbols? */
3085 static boolean
3086 coff_add_missing_symbols (abfd)
3087 bfd *abfd;
3089 unsigned int nsyms = bfd_get_symcount (abfd);
3090 asymbol **sympp = abfd->outsymbols;
3091 asymbol **sympp2;
3092 unsigned int i;
3093 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
3095 for (i = 0; i < nsyms; i++)
3097 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
3098 CONST char *name;
3099 if (csym)
3101 /* only do this if there is a coff representation of the input
3102 symbol */
3103 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
3105 need_file = 0;
3106 continue;
3108 name = csym->symbol.name;
3109 if (!name)
3110 continue;
3111 if (!strcmp (name, _TEXT))
3112 need_text = 0;
3113 #ifdef APOLLO_M68
3114 else if (!strcmp (name, ".wtext"))
3115 need_text = 0;
3116 #endif
3117 else if (!strcmp (name, _DATA))
3118 need_data = 0;
3119 else if (!strcmp (name, _BSS))
3120 need_bss = 0;
3123 /* Now i == bfd_get_symcount (abfd). */
3124 /* @@ For now, don't deal with .file symbol. */
3125 need_file = 0;
3127 if (!need_text && !need_data && !need_bss && !need_file)
3128 return true;
3129 nsyms += need_text + need_data + need_bss + need_file;
3130 sympp2 = (asymbol **) bfd_alloc (abfd, nsyms * sizeof (asymbol *));
3131 if (!sympp2)
3132 return false;
3133 memcpy (sympp2, sympp, i * sizeof (asymbol *));
3134 if (need_file)
3136 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3137 abort ();
3139 if (need_text)
3140 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
3141 if (need_data)
3142 sympp2[i++] = coff_section_symbol (abfd, _DATA);
3143 if (need_bss)
3144 sympp2[i++] = coff_section_symbol (abfd, _BSS);
3145 BFD_ASSERT (i == nsyms);
3146 bfd_set_symtab (abfd, sympp2, nsyms);
3147 return true;
3150 #endif /* 0 */
3152 /* SUPPRESS 558 */
3153 /* SUPPRESS 529 */
3154 static boolean
3155 coff_write_object_contents (abfd)
3156 bfd * abfd;
3158 asection *current;
3159 boolean hasrelocs = false;
3160 boolean haslinno = false;
3161 boolean hasdebug = false;
3162 file_ptr scn_base;
3163 file_ptr reloc_base;
3164 file_ptr lineno_base;
3165 file_ptr sym_base;
3166 unsigned long reloc_size = 0;
3167 unsigned long lnno_size = 0;
3168 boolean long_section_names;
3169 asection *text_sec = NULL;
3170 asection *data_sec = NULL;
3171 asection *bss_sec = NULL;
3172 struct internal_filehdr internal_f;
3173 struct internal_aouthdr internal_a;
3174 #ifdef COFF_LONG_SECTION_NAMES
3175 size_t string_size = STRING_SIZE_SIZE;
3176 #endif
3178 bfd_set_error (bfd_error_system_call);
3180 /* Make a pass through the symbol table to count line number entries and
3181 put them into the correct asections */
3183 lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd);
3185 if (abfd->output_has_begun == false)
3187 if (! coff_compute_section_file_positions (abfd))
3188 return false;
3191 reloc_base = obj_relocbase (abfd);
3193 /* Work out the size of the reloc and linno areas */
3195 for (current = abfd->sections; current != NULL; current =
3196 current->next)
3197 reloc_size += current->reloc_count * bfd_coff_relsz (abfd);
3199 lineno_base = reloc_base + reloc_size;
3200 sym_base = lineno_base + lnno_size;
3202 /* Indicate in each section->line_filepos its actual file address */
3203 for (current = abfd->sections; current != NULL; current =
3204 current->next)
3206 if (current->lineno_count)
3208 current->line_filepos = lineno_base;
3209 current->moving_line_filepos = lineno_base;
3210 lineno_base += current->lineno_count * bfd_coff_linesz (abfd);
3212 else
3214 current->line_filepos = 0;
3216 if (current->reloc_count)
3218 current->rel_filepos = reloc_base;
3219 reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
3221 else
3223 current->rel_filepos = 0;
3227 /* Write section headers to the file. */
3228 internal_f.f_nscns = 0;
3230 if ((abfd->flags & EXEC_P) != 0)
3231 scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
3232 else
3234 scn_base = bfd_coff_filhsz (abfd);
3235 #ifdef RS6000COFF_C
3236 if (xcoff_data (abfd)->full_aouthdr)
3237 scn_base += bfd_coff_aoutsz (abfd);
3238 else
3239 scn_base += SMALL_AOUTSZ;
3240 #endif
3243 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
3244 return false;
3246 long_section_names = false;
3247 for (current = abfd->sections;
3248 current != NULL;
3249 current = current->next)
3251 struct internal_scnhdr section;
3252 boolean is_reloc_section = false;
3254 #ifdef COFF_IMAGE_WITH_PE
3255 if (strcmp (current->name, ".reloc") == 0)
3257 is_reloc_section = true;
3258 hasrelocs = true;
3259 pe_data (abfd)->has_reloc_section = 1;
3261 #endif
3263 internal_f.f_nscns++;
3265 strncpy (section.s_name, current->name, SCNNMLEN);
3267 #ifdef COFF_LONG_SECTION_NAMES
3268 /* Handle long section names as in PE. This must be compatible
3269 with the code in coff_write_symbols and _bfd_coff_final_link. */
3271 size_t len;
3273 len = strlen (current->name);
3274 if (len > SCNNMLEN)
3276 memset (section.s_name, 0, SCNNMLEN);
3277 sprintf (section.s_name, "/%lu", (unsigned long) string_size);
3278 string_size += len + 1;
3279 long_section_names = true;
3282 #endif
3284 #ifdef _LIB
3285 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3286 Ian Taylor <ian@cygnus.com>. */
3287 if (strcmp (current->name, _LIB) == 0)
3288 section.s_vaddr = 0;
3289 else
3290 #endif
3291 section.s_vaddr = current->vma;
3292 section.s_paddr = current->lma;
3293 section.s_size = current->_raw_size;
3294 #ifdef coff_get_section_load_page
3295 section.s_page = coff_get_section_load_page (current);
3296 #endif
3298 #ifdef COFF_WITH_PE
3299 section.s_paddr = 0;
3300 #endif
3301 #ifdef COFF_IMAGE_WITH_PE
3302 /* Reminder: s_paddr holds the virtual size of the section. */
3303 if (coff_section_data (abfd, current) != NULL
3304 && pei_section_data (abfd, current) != NULL)
3305 section.s_paddr = pei_section_data (abfd, current)->virt_size;
3306 else
3307 section.s_paddr = 0;
3308 #endif
3311 If this section has no size or is unloadable then the scnptr
3312 will be 0 too
3314 if (current->_raw_size == 0 ||
3315 (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
3317 section.s_scnptr = 0;
3319 else
3321 section.s_scnptr = current->filepos;
3323 section.s_relptr = current->rel_filepos;
3324 section.s_lnnoptr = current->line_filepos;
3325 section.s_nreloc = current->reloc_count;
3326 section.s_nlnno = current->lineno_count;
3327 #ifndef COFF_IMAGE_WITH_PE
3328 /* In PEI, relocs come in the .reloc section. */
3329 if (current->reloc_count != 0)
3330 hasrelocs = true;
3331 #endif
3332 if (current->lineno_count != 0)
3333 haslinno = true;
3334 if ((current->flags & SEC_DEBUGGING) != 0
3335 && ! is_reloc_section)
3336 hasdebug = true;
3338 #ifdef RS6000COFF_C
3339 #ifndef XCOFF64
3340 /* Indicate the use of an XCOFF overflow section header. */
3341 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3343 section.s_nreloc = 0xffff;
3344 section.s_nlnno = 0xffff;
3346 #endif
3347 #endif
3349 section.s_flags = sec_to_styp_flags (current->name, current->flags);
3351 if (!strcmp (current->name, _TEXT))
3353 text_sec = current;
3355 else if (!strcmp (current->name, _DATA))
3357 data_sec = current;
3359 else if (!strcmp (current->name, _BSS))
3361 bss_sec = current;
3364 #ifdef I960
3365 section.s_align = (current->alignment_power
3366 ? 1 << current->alignment_power
3367 : 0);
3368 #endif
3369 #ifdef TIC80COFF
3370 /* TI COFF puts the alignment power in bits 8-11 of the flags */
3371 section.s_flags |= (current->alignment_power & 0xF) << 8;
3372 #endif
3373 #ifdef COFF_ENCODE_ALIGNMENT
3374 COFF_ENCODE_ALIGNMENT(section, current->alignment_power);
3375 #endif
3377 #ifdef COFF_IMAGE_WITH_PE
3378 /* Suppress output of the sections if they are null. ld
3379 includes the bss and data sections even if there is no size
3380 assigned to them. NT loader doesn't like it if these section
3381 headers are included if the sections themselves are not
3382 needed. See also coff_compute_section_file_positions. */
3383 if (section.s_size == 0)
3384 internal_f.f_nscns--;
3385 else
3386 #endif
3388 SCNHDR buff;
3389 if (coff_swap_scnhdr_out (abfd, &section, &buff) == 0
3390 || bfd_write ((PTR) (&buff), 1, bfd_coff_scnhsz (abfd), abfd)
3391 != bfd_coff_scnhsz (abfd))
3392 return false;
3395 #ifdef COFF_WITH_PE
3396 /* PE stores COMDAT section information in the symbol table. If
3397 this section is supposed to have some COMDAT info, track down
3398 the symbol in the symbol table and modify it. */
3399 if ((current->flags & SEC_LINK_ONCE) != 0)
3401 unsigned int i, count;
3402 asymbol **psym;
3403 coff_symbol_type *csym = NULL;
3404 asymbol **psymsec;
3406 psymsec = NULL;
3407 count = bfd_get_symcount (abfd);
3408 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
3410 if ((*psym)->section != current)
3411 continue;
3413 /* Remember the location of the first symbol in this
3414 section. */
3415 if (psymsec == NULL)
3416 psymsec = psym;
3418 /* See if this is the section symbol. */
3419 if (strcmp ((*psym)->name, current->name) == 0)
3421 csym = coff_symbol_from (abfd, *psym);
3422 if (csym == NULL
3423 || csym->native == NULL
3424 || csym->native->u.syment.n_numaux < 1
3425 || csym->native->u.syment.n_sclass != C_STAT
3426 || csym->native->u.syment.n_type != T_NULL)
3427 continue;
3429 /* Here *PSYM is the section symbol for CURRENT. */
3431 break;
3435 /* Did we find it?
3436 Note that we might not if we're converting the file from
3437 some other object file format. */
3438 if (i < count)
3440 combined_entry_type *aux;
3442 /* We don't touch the x_checksum field. The
3443 x_associated field is not currently supported. */
3445 aux = csym->native + 1;
3446 switch (current->flags & SEC_LINK_DUPLICATES)
3448 case SEC_LINK_DUPLICATES_DISCARD:
3449 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
3450 break;
3452 case SEC_LINK_DUPLICATES_ONE_ONLY:
3453 aux->u.auxent.x_scn.x_comdat =
3454 IMAGE_COMDAT_SELECT_NODUPLICATES;
3455 break;
3457 case SEC_LINK_DUPLICATES_SAME_SIZE:
3458 aux->u.auxent.x_scn.x_comdat =
3459 IMAGE_COMDAT_SELECT_SAME_SIZE;
3460 break;
3462 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
3463 aux->u.auxent.x_scn.x_comdat =
3464 IMAGE_COMDAT_SELECT_EXACT_MATCH;
3465 break;
3468 /* The COMDAT symbol must be the first symbol from this
3469 section in the symbol table. In order to make this
3470 work, we move the COMDAT symbol before the first
3471 symbol we found in the search above. It's OK to
3472 rearrange the symbol table at this point, because
3473 coff_renumber_symbols is going to rearrange it
3474 further and fix up all the aux entries. */
3475 if (psym != psymsec)
3477 asymbol *hold;
3478 asymbol **pcopy;
3480 hold = *psym;
3481 for (pcopy = psym; pcopy > psymsec; pcopy--)
3482 pcopy[0] = pcopy[-1];
3483 *psymsec = hold;
3487 #endif /* COFF_WITH_PE */
3490 #ifdef RS6000COFF_C
3491 /* XCOFF handles overflows in the reloc and line number count fields
3492 by creating a new section header to hold the correct values. */
3493 for (current = abfd->sections; current != NULL; current = current->next)
3495 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3497 struct internal_scnhdr scnhdr;
3498 SCNHDR buff;
3500 internal_f.f_nscns++;
3501 strncpy (&(scnhdr.s_name[0]), current->name, 8);
3502 scnhdr.s_paddr = current->reloc_count;
3503 scnhdr.s_vaddr = current->lineno_count;
3504 scnhdr.s_size = 0;
3505 scnhdr.s_scnptr = 0;
3506 scnhdr.s_relptr = current->rel_filepos;
3507 scnhdr.s_lnnoptr = current->line_filepos;
3508 scnhdr.s_nreloc = current->target_index;
3509 scnhdr.s_nlnno = current->target_index;
3510 scnhdr.s_flags = STYP_OVRFLO;
3511 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
3512 || bfd_write ((PTR) &buff, 1, bfd_coff_scnhsz (abfd), abfd)
3513 != bfd_coff_scnhsz (abfd))
3514 return false;
3517 #endif
3519 /* OK, now set up the filehdr... */
3521 /* Don't include the internal abs section in the section count */
3524 We will NOT put a fucking timestamp in the header here. Every time you
3525 put it back, I will come in and take it out again. I'm sorry. This
3526 field does not belong here. We fill it with a 0 so it compares the
3527 same but is not a reasonable time. -- gnu@cygnus.com
3529 internal_f.f_timdat = 0;
3531 internal_f.f_flags = 0;
3533 if (abfd->flags & EXEC_P)
3534 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3535 else
3537 internal_f.f_opthdr = 0;
3538 #ifdef RS6000COFF_C
3539 if (xcoff_data (abfd)->full_aouthdr)
3540 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3541 else
3542 internal_f.f_opthdr = SMALL_AOUTSZ;
3543 #endif
3546 if (!hasrelocs)
3547 internal_f.f_flags |= F_RELFLG;
3548 if (!haslinno)
3549 internal_f.f_flags |= F_LNNO;
3550 if (abfd->flags & EXEC_P)
3551 internal_f.f_flags |= F_EXEC;
3552 #ifdef COFF_IMAGE_WITH_PE
3553 if (! hasdebug)
3554 internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED;
3555 #endif
3557 #ifndef COFF_WITH_PE
3558 if (bfd_little_endian (abfd))
3559 internal_f.f_flags |= F_AR32WR;
3560 else
3561 internal_f.f_flags |= F_AR32W;
3562 #endif
3564 #ifdef TI_TARGET_ID
3565 /* target id is used in TI COFF v1 and later; COFF0 won't use this field,
3566 but it doesn't hurt to set it internally */
3567 internal_f.f_target_id = TI_TARGET_ID;
3568 #endif
3569 #ifdef TIC80_TARGET_ID
3570 internal_f.f_target_id = TIC80_TARGET_ID;
3571 #endif
3574 FIXME, should do something about the other byte orders and
3575 architectures.
3578 #ifdef RS6000COFF_C
3579 if ((abfd->flags & DYNAMIC) != 0)
3580 internal_f.f_flags |= F_SHROBJ;
3581 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
3582 internal_f.f_flags |= F_DYNLOAD;
3583 #endif
3585 memset (&internal_a, 0, sizeof internal_a);
3587 /* Set up architecture-dependent stuff */
3590 unsigned int magic = 0;
3591 unsigned short flags = 0;
3592 coff_set_flags (abfd, &magic, &flags);
3593 internal_f.f_magic = magic;
3594 internal_f.f_flags |= flags;
3595 /* ...and the "opt"hdr... */
3597 #ifdef A29K
3598 #ifdef ULTRA3 /* NYU's machine */
3599 /* FIXME: This is a bogus check. I really want to see if there
3600 * is a .shbss or a .shdata section, if so then set the magic
3601 * number to indicate a shared data executable.
3603 if (internal_f.f_nscns >= 7)
3604 internal_a.magic = SHMAGIC; /* Shared magic */
3605 else
3606 #endif /* ULTRA3 */
3607 internal_a.magic = NMAGIC; /* Assume separate i/d */
3608 #define __A_MAGIC_SET__
3609 #endif /* A29K */
3610 #ifdef TICOFF_AOUT_MAGIC
3611 internal_a.magic = TICOFF_AOUT_MAGIC;
3612 #define __A_MAGIC_SET__
3613 #endif
3614 #ifdef TIC80COFF
3615 internal_a.magic = TIC80_ARCH_MAGIC;
3616 #define __A_MAGIC_SET__
3617 #endif /* TIC80 */
3618 #ifdef I860
3619 /* FIXME: What are the a.out magic numbers for the i860? */
3620 internal_a.magic = 0;
3621 #define __A_MAGIC_SET__
3622 #endif /* I860 */
3623 #ifdef I960
3624 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
3625 #define __A_MAGIC_SET__
3626 #endif /* I960 */
3627 #if M88
3628 #define __A_MAGIC_SET__
3629 internal_a.magic = PAGEMAGICBCS;
3630 #endif /* M88 */
3632 #if APOLLO_M68
3633 #define __A_MAGIC_SET__
3634 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
3635 #endif
3637 #if defined(M68) || defined(WE32K) || defined(M68K)
3638 #define __A_MAGIC_SET__
3639 #if defined(LYNXOS)
3640 internal_a.magic = LYNXCOFFMAGIC;
3641 #else
3642 #if defined(TARG_AUX)
3643 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
3644 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
3645 PAGEMAGICEXECSWAPPED);
3646 #else
3647 #if defined (PAGEMAGICPEXECPAGED)
3648 internal_a.magic = PAGEMAGICPEXECPAGED;
3649 #endif
3650 #endif /* TARG_AUX */
3651 #endif /* LYNXOS */
3652 #endif /* M68 || WE32K || M68K */
3654 #if defined(ARM)
3655 #define __A_MAGIC_SET__
3656 internal_a.magic = ZMAGIC;
3657 #endif
3659 #if defined(PPC_PE)
3660 #define __A_MAGIC_SET__
3661 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3662 #endif
3664 #if defined MCORE_PE
3665 #define __A_MAGIC_SET__
3666 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3667 #endif
3669 #if defined(I386)
3670 #define __A_MAGIC_SET__
3671 #if defined(LYNXOS)
3672 internal_a.magic = LYNXCOFFMAGIC;
3673 #else /* LYNXOS */
3674 internal_a.magic = ZMAGIC;
3675 #endif /* LYNXOS */
3676 #endif /* I386 */
3678 #if defined(IA64)
3679 #define __A_MAGIC_SET__
3680 internal_a.magic = ZMAGIC;
3681 #endif /* IA64 */
3683 #if defined(SPARC)
3684 #define __A_MAGIC_SET__
3685 #if defined(LYNXOS)
3686 internal_a.magic = LYNXCOFFMAGIC;
3687 #endif /* LYNXOS */
3688 #endif /* SPARC */
3690 #ifdef RS6000COFF_C
3691 #define __A_MAGIC_SET__
3692 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
3693 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
3694 RS6K_AOUTHDR_OMAGIC;
3695 #endif
3697 #if defined(SH) && defined(COFF_WITH_PE)
3698 #define __A_MAGIC_SET__
3699 internal_a.magic = SH_PE_MAGIC;
3700 #endif
3702 #if defined(MIPS) && defined(COFF_WITH_PE)
3703 #define __A_MAGIC_SET__
3704 internal_a.magic = MIPS_PE_MAGIC;
3705 #endif
3707 #ifndef __A_MAGIC_SET__
3708 #include "Your aouthdr magic number is not being set!"
3709 #else
3710 #undef __A_MAGIC_SET__
3711 #endif
3714 /* FIXME: Does anybody ever set this to another value? */
3715 internal_a.vstamp = 0;
3717 /* Now should write relocs, strings, syms */
3718 obj_sym_filepos (abfd) = sym_base;
3720 if (bfd_get_symcount (abfd) != 0)
3722 int firstundef;
3723 #if 0
3724 if (!coff_add_missing_symbols (abfd))
3725 return false;
3726 #endif
3727 if (!coff_renumber_symbols (abfd, &firstundef))
3728 return false;
3729 coff_mangle_symbols (abfd);
3730 if (! coff_write_symbols (abfd))
3731 return false;
3732 if (! coff_write_linenumbers (abfd))
3733 return false;
3734 if (! coff_write_relocs (abfd, firstundef))
3735 return false;
3737 #ifdef COFF_LONG_SECTION_NAMES
3738 else if (long_section_names)
3740 /* If we have long section names we have to write out the string
3741 table even if there are no symbols. */
3742 if (! coff_write_symbols (abfd))
3743 return false;
3745 #endif
3746 #ifdef COFF_IMAGE_WITH_PE
3747 #ifdef PPC_PE
3748 else if ((abfd->flags & EXEC_P) != 0)
3750 bfd_byte b;
3752 /* PowerPC PE appears to require that all executable files be
3753 rounded up to the page size. */
3754 b = 0;
3755 if (bfd_seek (abfd,
3756 BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
3757 SEEK_SET) != 0
3758 || bfd_write (&b, 1, 1, abfd) != 1)
3759 return false;
3761 #endif
3762 #endif
3764 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
3765 backend linker, and obj_raw_syment_count is not valid until after
3766 coff_write_symbols is called. */
3767 if (obj_raw_syment_count (abfd) != 0)
3769 internal_f.f_symptr = sym_base;
3770 #ifdef RS6000COFF_C
3771 /* AIX appears to require that F_RELFLG not be set if there are
3772 local symbols but no relocations. */
3773 internal_f.f_flags &=~ F_RELFLG;
3774 #endif
3776 else
3778 if (long_section_names)
3779 internal_f.f_symptr = sym_base;
3780 else
3781 internal_f.f_symptr = 0;
3782 internal_f.f_flags |= F_LSYMS;
3785 if (text_sec)
3787 internal_a.tsize = bfd_get_section_size_before_reloc (text_sec);
3788 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
3790 if (data_sec)
3792 internal_a.dsize = bfd_get_section_size_before_reloc (data_sec);
3793 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
3795 if (bss_sec)
3797 internal_a.bsize = bfd_get_section_size_before_reloc (bss_sec);
3798 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
3799 internal_a.data_start = bss_sec->vma;
3802 internal_a.entry = bfd_get_start_address (abfd);
3803 internal_f.f_nsyms = obj_raw_syment_count (abfd);
3805 #ifdef RS6000COFF_C
3806 if (xcoff_data (abfd)->full_aouthdr)
3808 bfd_vma toc;
3809 asection *loader_sec;
3811 internal_a.vstamp = 1;
3813 internal_a.o_snentry = xcoff_data (abfd)->snentry;
3814 if (internal_a.o_snentry == 0)
3815 internal_a.entry = (bfd_vma) -1;
3817 if (text_sec != NULL)
3819 internal_a.o_sntext = text_sec->target_index;
3820 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
3822 else
3824 internal_a.o_sntext = 0;
3825 internal_a.o_algntext = 0;
3827 if (data_sec != NULL)
3829 internal_a.o_sndata = data_sec->target_index;
3830 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
3832 else
3834 internal_a.o_sndata = 0;
3835 internal_a.o_algndata = 0;
3837 loader_sec = bfd_get_section_by_name (abfd, ".loader");
3838 if (loader_sec != NULL)
3839 internal_a.o_snloader = loader_sec->target_index;
3840 else
3841 internal_a.o_snloader = 0;
3842 if (bss_sec != NULL)
3843 internal_a.o_snbss = bss_sec->target_index;
3844 else
3845 internal_a.o_snbss = 0;
3847 toc = xcoff_data (abfd)->toc;
3848 internal_a.o_toc = toc;
3849 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
3851 internal_a.o_modtype = xcoff_data (abfd)->modtype;
3852 if (xcoff_data (abfd)->cputype != -1)
3853 internal_a.o_cputype = xcoff_data (abfd)->cputype;
3854 else
3856 switch (bfd_get_arch (abfd))
3858 case bfd_arch_rs6000:
3859 internal_a.o_cputype = 4;
3860 break;
3861 case bfd_arch_powerpc:
3862 if (bfd_get_mach (abfd) == 0)
3863 internal_a.o_cputype = 3;
3864 else
3865 internal_a.o_cputype = 1;
3866 break;
3867 default:
3868 abort ();
3871 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
3872 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
3874 #endif
3876 /* now write them */
3877 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
3878 return false;
3881 char * buff;
3882 bfd_size_type amount;
3884 buff = bfd_malloc (bfd_coff_filhsz (abfd));
3885 if (buff == NULL)
3886 return false;
3888 coff_swap_filehdr_out (abfd, (PTR) & internal_f, (PTR) buff);
3889 amount = bfd_write ((PTR) buff, 1, bfd_coff_filhsz (abfd), abfd);
3891 free (buff);
3893 if (amount != bfd_coff_filhsz (abfd))
3894 return false;
3897 if (abfd->flags & EXEC_P)
3899 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
3900 include/coff/pe.h sets AOUTSZ == sizeof(PEAOUTHDR)) */
3901 char * buff;
3902 bfd_size_type amount;
3904 buff = bfd_malloc (bfd_coff_aoutsz (abfd));
3905 if (buff == NULL)
3906 return false;
3908 coff_swap_aouthdr_out (abfd, (PTR) & internal_a, (PTR) buff);
3909 amount = bfd_write ((PTR) buff, 1, bfd_coff_aoutsz (abfd), abfd);
3911 free (buff);
3913 if (amount != bfd_coff_aoutsz (abfd))
3914 return false;
3916 #ifdef RS6000COFF_C
3917 else
3919 AOUTHDR buff;
3920 size_t size;
3922 /* XCOFF seems to always write at least a small a.out header. */
3923 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff);
3924 if (xcoff_data (abfd)->full_aouthdr)
3925 size = bfd_coff_aoutsz (abfd);
3926 else
3927 size = SMALL_AOUTSZ;
3928 if (bfd_write ((PTR) &buff, 1, size, abfd) != size)
3929 return false;
3931 #endif
3933 return true;
3936 static boolean
3937 coff_set_section_contents (abfd, section, location, offset, count)
3938 bfd * abfd;
3939 sec_ptr section;
3940 PTR location;
3941 file_ptr offset;
3942 bfd_size_type count;
3944 if (abfd->output_has_begun == false) /* set by bfd.c handler */
3946 if (! coff_compute_section_file_positions (abfd))
3947 return false;
3950 #if defined(_LIB) && !defined(TARG_AUX)
3952 /* The physical address field of a .lib section is used to hold the
3953 number of shared libraries in the section. This code counts the
3954 number of sections being written, and increments the lma field
3955 with the number.
3957 I have found no documentation on the contents of this section.
3958 Experimentation indicates that the section contains zero or more
3959 records, each of which has the following structure:
3961 - a (four byte) word holding the length of this record, in words,
3962 - a word that always seems to be set to "2",
3963 - the path to a shared library, null-terminated and then padded
3964 to a whole word boundary.
3966 bfd_assert calls have been added to alert if an attempt is made
3967 to write a section which doesn't follow these assumptions. The
3968 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
3969 <robertl@arnet.com> (Thanks!).
3971 Gvran Uddeborg <gvran@uddeborg.pp.se> */
3973 if (strcmp (section->name, _LIB) == 0)
3975 bfd_byte *rec, *recend;
3977 rec = (bfd_byte *) location;
3978 recend = rec + count;
3979 while (rec < recend)
3981 ++section->lma;
3982 rec += bfd_get_32 (abfd, rec) * 4;
3985 BFD_ASSERT (rec == recend);
3988 #endif
3990 /* Don't write out bss sections - one way to do this is to
3991 see if the filepos has not been set. */
3992 if (section->filepos == 0)
3993 return true;
3995 if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0)
3996 return false;
3998 if (count != 0)
4000 return (bfd_write (location, 1, count, abfd) == count) ? true : false;
4002 return true;
4004 #if 0
4005 static boolean
4006 coff_close_and_cleanup (abfd)
4007 bfd *abfd;
4009 if (!bfd_read_p (abfd))
4010 switch (abfd->format)
4012 case bfd_archive:
4013 if (!_bfd_write_archive_contents (abfd))
4014 return false;
4015 break;
4016 case bfd_object:
4017 if (!coff_write_object_contents (abfd))
4018 return false;
4019 break;
4020 default:
4021 bfd_set_error (bfd_error_invalid_operation);
4022 return false;
4025 /* We depend on bfd_close to free all the memory on the objalloc. */
4026 return true;
4029 #endif
4031 static PTR
4032 buy_and_read (abfd, where, seek_direction, size)
4033 bfd *abfd;
4034 file_ptr where;
4035 int seek_direction;
4036 size_t size;
4038 PTR area = (PTR) bfd_alloc (abfd, size);
4039 if (!area)
4040 return (NULL);
4041 if (bfd_seek (abfd, where, seek_direction) != 0
4042 || bfd_read (area, 1, size, abfd) != size)
4043 return (NULL);
4044 return (area);
4045 } /* buy_and_read() */
4048 SUBSUBSECTION
4049 Reading linenumbers
4051 Creating the linenumber table is done by reading in the entire
4052 coff linenumber table, and creating another table for internal use.
4054 A coff linenumber table is structured so that each function
4055 is marked as having a line number of 0. Each line within the
4056 function is an offset from the first line in the function. The
4057 base of the line number information for the table is stored in
4058 the symbol associated with the function.
4060 Note: The PE format uses line number 0 for a flag indicating a
4061 new source file.
4063 The information is copied from the external to the internal
4064 table, and each symbol which marks a function is marked by
4065 pointing its...
4067 How does this work ?
4071 static boolean
4072 coff_slurp_line_table (abfd, asect)
4073 bfd *abfd;
4074 asection *asect;
4076 LINENO *native_lineno;
4077 alent *lineno_cache;
4079 BFD_ASSERT (asect->lineno == (alent *) NULL);
4081 native_lineno = (LINENO *) buy_and_read (abfd,
4082 asect->line_filepos,
4083 SEEK_SET,
4084 (size_t) (bfd_coff_linesz (abfd) *
4085 asect->lineno_count));
4086 lineno_cache =
4087 (alent *) bfd_alloc (abfd, (size_t) ((asect->lineno_count + 1) * sizeof (alent)));
4088 if (lineno_cache == NULL)
4089 return false;
4090 else
4092 unsigned int counter = 0;
4093 alent *cache_ptr = lineno_cache;
4094 LINENO *src = native_lineno;
4096 while (counter < asect->lineno_count)
4098 struct internal_lineno dst;
4099 bfd_coff_swap_lineno_in (abfd, src, &dst);
4100 cache_ptr->line_number = dst.l_lnno;
4102 if (cache_ptr->line_number == 0)
4104 boolean warned;
4105 long symndx;
4106 coff_symbol_type *sym;
4108 warned = false;
4109 symndx = dst.l_addr.l_symndx;
4110 if (symndx < 0
4111 || (unsigned long) symndx >= obj_raw_syment_count (abfd))
4113 (*_bfd_error_handler)
4114 (_("%s: warning: illegal symbol index %ld in line numbers"),
4115 bfd_get_filename (abfd), dst.l_addr.l_symndx);
4116 symndx = 0;
4117 warned = true;
4119 /* FIXME: We should not be casting between ints and
4120 pointers like this. */
4121 sym = ((coff_symbol_type *)
4122 ((symndx + obj_raw_syments (abfd))
4123 ->u.syment._n._n_n._n_zeroes));
4124 cache_ptr->u.sym = (asymbol *) sym;
4125 if (sym->lineno != NULL && ! warned)
4127 (*_bfd_error_handler)
4128 (_("%s: warning: duplicate line number information for `%s'"),
4129 bfd_get_filename (abfd),
4130 bfd_asymbol_name (&sym->symbol));
4132 sym->lineno = cache_ptr;
4134 else
4136 cache_ptr->u.offset = dst.l_addr.l_paddr
4137 - bfd_section_vma (abfd, asect);
4138 } /* If no linenumber expect a symbol index */
4140 cache_ptr++;
4141 src++;
4142 counter++;
4144 cache_ptr->line_number = 0;
4147 asect->lineno = lineno_cache;
4148 /* FIXME, free native_lineno here, or use alloca or something. */
4149 return true;
4152 /* Slurp in the symbol table, converting it to generic form. Note
4153 that if coff_relocate_section is defined, the linker will read
4154 symbols via coff_link_add_symbols, rather than via this routine. */
4156 static boolean
4157 coff_slurp_symbol_table (abfd)
4158 bfd * abfd;
4160 combined_entry_type *native_symbols;
4161 coff_symbol_type *cached_area;
4162 unsigned int *table_ptr;
4164 unsigned int number_of_symbols = 0;
4166 if (obj_symbols (abfd))
4167 return true;
4169 /* Read in the symbol table */
4170 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
4172 return (false);
4173 } /* on error */
4175 /* Allocate enough room for all the symbols in cached form */
4176 cached_area = ((coff_symbol_type *)
4177 bfd_alloc (abfd,
4178 (obj_raw_syment_count (abfd)
4179 * sizeof (coff_symbol_type))));
4181 if (cached_area == NULL)
4182 return false;
4183 table_ptr = ((unsigned int *)
4184 bfd_alloc (abfd,
4185 (obj_raw_syment_count (abfd)
4186 * sizeof (unsigned int))));
4188 if (table_ptr == NULL)
4189 return false;
4190 else
4192 coff_symbol_type *dst = cached_area;
4193 unsigned int last_native_index = obj_raw_syment_count (abfd);
4194 unsigned int this_index = 0;
4195 while (this_index < last_native_index)
4197 combined_entry_type *src = native_symbols + this_index;
4198 table_ptr[this_index] = number_of_symbols;
4199 dst->symbol.the_bfd = abfd;
4201 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
4202 /* We use the native name field to point to the cached field. */
4203 src->u.syment._n._n_n._n_zeroes = (long) dst;
4204 dst->symbol.section = coff_section_from_bfd_index (abfd,
4205 src->u.syment.n_scnum);
4206 dst->symbol.flags = 0;
4207 dst->done_lineno = false;
4209 switch (src->u.syment.n_sclass)
4211 #ifdef I960
4212 case C_LEAFEXT:
4213 #if 0
4214 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
4215 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4216 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4217 #endif
4218 /* Fall through to next case */
4220 #endif
4222 case C_EXT:
4223 case C_WEAKEXT:
4224 #if defined ARM
4225 case C_THUMBEXT:
4226 case C_THUMBEXTFUNC:
4227 #endif
4228 #ifdef RS6000COFF_C
4229 case C_HIDEXT:
4230 #endif
4231 #ifdef C_SYSTEM
4232 case C_SYSTEM: /* System Wide variable */
4233 #endif
4234 #ifdef COFF_WITH_PE
4235 /* In PE, 0x68 (104) denotes a section symbol */
4236 case C_SECTION:
4237 /* In PE, 0x69 (105) denotes a weak external symbol. */
4238 case C_NT_WEAK:
4239 #endif
4240 switch (coff_classify_symbol (abfd, &src->u.syment))
4242 case COFF_SYMBOL_GLOBAL:
4243 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4244 #if defined COFF_WITH_PE
4245 /* PE sets the symbol to a value relative to the
4246 start of the section. */
4247 dst->symbol.value = src->u.syment.n_value;
4248 #else
4249 dst->symbol.value = (src->u.syment.n_value
4250 - dst->symbol.section->vma);
4251 #endif
4252 if (ISFCN ((src->u.syment.n_type)))
4254 /* A function ext does not go at the end of a
4255 file. */
4256 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4258 break;
4260 case COFF_SYMBOL_COMMON:
4261 dst->symbol.section = bfd_com_section_ptr;
4262 dst->symbol.value = src->u.syment.n_value;
4263 break;
4265 case COFF_SYMBOL_UNDEFINED:
4266 dst->symbol.section = bfd_und_section_ptr;
4267 dst->symbol.value = 0;
4268 break;
4270 case COFF_SYMBOL_PE_SECTION:
4271 dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM;
4272 dst->symbol.value = 0;
4273 break;
4275 case COFF_SYMBOL_LOCAL:
4276 dst->symbol.flags = BSF_LOCAL;
4277 #if defined COFF_WITH_PE
4278 /* PE sets the symbol to a value relative to the
4279 start of the section. */
4280 dst->symbol.value = src->u.syment.n_value;
4281 #else
4282 dst->symbol.value = (src->u.syment.n_value
4283 - dst->symbol.section->vma);
4284 #endif
4285 if (ISFCN ((src->u.syment.n_type)))
4286 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4287 break;
4290 #ifdef RS6000COFF_C
4291 /* A symbol with a csect entry should not go at the end. */
4292 if (src->u.syment.n_numaux > 0)
4293 dst->symbol.flags |= BSF_NOT_AT_END;
4294 #endif
4296 #ifdef COFF_WITH_PE
4297 if (src->u.syment.n_sclass == C_NT_WEAK)
4298 dst->symbol.flags = BSF_WEAK;
4299 if (src->u.syment.n_sclass == C_SECTION
4300 && src->u.syment.n_scnum > 0)
4302 dst->symbol.flags = BSF_LOCAL;
4304 #endif
4306 if (src->u.syment.n_sclass == C_WEAKEXT)
4307 dst->symbol.flags = BSF_WEAK;
4309 break;
4311 case C_STAT: /* static */
4312 #ifdef I960
4313 case C_LEAFSTAT: /* static leaf procedure */
4314 #endif
4315 #if defined ARM
4316 case C_THUMBSTAT: /* Thumb static */
4317 case C_THUMBLABEL: /* Thumb label */
4318 case C_THUMBSTATFUNC:/* Thumb static function */
4319 #endif
4320 case C_LABEL: /* label */
4321 if (src->u.syment.n_scnum == N_DEBUG)
4322 dst->symbol.flags = BSF_DEBUGGING;
4323 else
4324 dst->symbol.flags = BSF_LOCAL;
4326 /* Base the value as an index from the base of the
4327 section, if there is one. */
4328 if (dst->symbol.section)
4330 #if defined COFF_WITH_PE
4331 /* PE sets the symbol to a value relative to the
4332 start of the section. */
4333 dst->symbol.value = src->u.syment.n_value;
4334 #else
4335 dst->symbol.value = (src->u.syment.n_value
4336 - dst->symbol.section->vma);
4337 #endif
4339 else
4340 dst->symbol.value = src->u.syment.n_value;
4341 break;
4343 case C_MOS: /* member of structure */
4344 case C_EOS: /* end of structure */
4345 #ifdef NOTDEF /* C_AUTOARG has the same value */
4346 #ifdef C_GLBLREG
4347 case C_GLBLREG: /* A29k-specific storage class */
4348 #endif
4349 #endif
4350 case C_REGPARM: /* register parameter */
4351 case C_REG: /* register variable */
4352 /* C_AUTOARG conflictes with TI COFF C_UEXT */
4353 #if !defined (TIC80COFF) && !defined (TICOFF)
4354 #ifdef C_AUTOARG
4355 case C_AUTOARG: /* 960-specific storage class */
4356 #endif
4357 #endif
4358 case C_TPDEF: /* type definition */
4359 case C_ARG:
4360 case C_AUTO: /* automatic variable */
4361 case C_FIELD: /* bit field */
4362 case C_ENTAG: /* enumeration tag */
4363 case C_MOE: /* member of enumeration */
4364 case C_MOU: /* member of union */
4365 case C_UNTAG: /* union tag */
4366 dst->symbol.flags = BSF_DEBUGGING;
4367 dst->symbol.value = (src->u.syment.n_value);
4368 break;
4370 case C_FILE: /* file name */
4371 case C_STRTAG: /* structure tag */
4372 #ifdef RS6000COFF_C
4373 case C_GSYM:
4374 case C_LSYM:
4375 case C_PSYM:
4376 case C_RSYM:
4377 case C_RPSYM:
4378 case C_STSYM:
4379 case C_BCOMM:
4380 case C_ECOMM:
4381 case C_DECL:
4382 case C_ENTRY:
4383 case C_FUN:
4384 case C_ESTAT:
4385 #endif
4386 dst->symbol.flags = BSF_DEBUGGING;
4387 dst->symbol.value = (src->u.syment.n_value);
4388 break;
4390 #ifdef RS6000COFF_C
4391 case C_BINCL: /* beginning of include file */
4392 case C_EINCL: /* ending of include file */
4393 /* The value is actually a pointer into the line numbers
4394 of the file. We locate the line number entry, and
4395 set the section to the section which contains it, and
4396 the value to the index in that section. */
4398 asection *sec;
4400 dst->symbol.flags = BSF_DEBUGGING;
4401 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4402 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
4403 && ((file_ptr) (sec->line_filepos
4404 + sec->lineno_count * bfd_coff_linesz (abfd))
4405 > (file_ptr) src->u.syment.n_value))
4406 break;
4407 if (sec == NULL)
4408 dst->symbol.value = 0;
4409 else
4411 dst->symbol.section = sec;
4412 dst->symbol.value = ((src->u.syment.n_value
4413 - sec->line_filepos)
4414 / bfd_coff_linesz (abfd));
4415 src->fix_line = 1;
4418 break;
4420 case C_BSTAT:
4421 dst->symbol.flags = BSF_DEBUGGING;
4423 /* The value is actually a symbol index. Save a pointer
4424 to the symbol instead of the index. FIXME: This
4425 should use a union. */
4426 src->u.syment.n_value =
4427 (long) (native_symbols + src->u.syment.n_value);
4428 dst->symbol.value = src->u.syment.n_value;
4429 src->fix_value = 1;
4430 break;
4431 #endif
4433 case C_BLOCK: /* ".bb" or ".eb" */
4434 case C_FCN: /* ".bf" or ".ef" (or PE ".lf") */
4435 case C_EFCN: /* physical end of function */
4436 #if defined COFF_WITH_PE
4437 /* PE sets the symbol to a value relative to the start
4438 of the section. */
4439 dst->symbol.value = src->u.syment.n_value;
4440 if (strcmp (dst->symbol.name, ".bf") != 0)
4442 /* PE uses funny values for .ef and .lf; don't
4443 relocate them. */
4444 dst->symbol.flags = BSF_DEBUGGING;
4446 else
4447 dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC;
4448 #else
4449 /* Base the value as an index from the base of the
4450 section. */
4451 dst->symbol.flags = BSF_LOCAL;
4452 dst->symbol.value = (src->u.syment.n_value
4453 - dst->symbol.section->vma);
4454 #endif
4455 break;
4457 case C_STATLAB: /* Static load time label */
4458 dst->symbol.value = src->u.syment.n_value;
4459 dst->symbol.flags = BSF_GLOBAL;
4460 break;
4462 case C_NULL:
4463 /* PE DLLs sometimes have zeroed out symbols for some
4464 reason. Just ignore them without a warning. */
4465 if (src->u.syment.n_type == 0
4466 && src->u.syment.n_value == 0
4467 && src->u.syment.n_scnum == 0)
4468 break;
4469 /* Fall through. */
4470 case C_EXTDEF: /* external definition */
4471 case C_ULABEL: /* undefined label */
4472 case C_USTATIC: /* undefined static */
4473 #ifndef COFF_WITH_PE
4474 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4475 class to represent a section symbol */
4476 case C_LINE: /* line # reformatted as symbol table entry */
4477 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4478 case C_ALIAS: /* duplicate tag */
4479 #endif
4480 /* New storage classes for TI COFF */
4481 #if defined(TIC80COFF) || defined(TICOFF)
4482 case C_UEXT: /* Tentative external definition */
4483 #endif
4484 case C_EXTLAB: /* External load time label */
4485 case C_HIDDEN: /* ext symbol in dmert public lib */
4486 default:
4487 (*_bfd_error_handler)
4488 (_("%s: Unrecognized storage class %d for %s symbol `%s'"),
4489 bfd_get_filename (abfd), src->u.syment.n_sclass,
4490 dst->symbol.section->name, dst->symbol.name);
4491 dst->symbol.flags = BSF_DEBUGGING;
4492 dst->symbol.value = (src->u.syment.n_value);
4493 break;
4496 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4498 dst->native = src;
4500 dst->symbol.udata.i = 0;
4501 dst->lineno = (alent *) NULL;
4502 this_index += (src->u.syment.n_numaux) + 1;
4503 dst++;
4504 number_of_symbols++;
4505 } /* walk the native symtab */
4506 } /* bfdize the native symtab */
4508 obj_symbols (abfd) = cached_area;
4509 obj_raw_syments (abfd) = native_symbols;
4511 bfd_get_symcount (abfd) = number_of_symbols;
4512 obj_convert (abfd) = table_ptr;
4513 /* Slurp the line tables for each section too */
4515 asection *p;
4516 p = abfd->sections;
4517 while (p)
4519 coff_slurp_line_table (abfd, p);
4520 p = p->next;
4523 return true;
4524 } /* coff_slurp_symbol_table() */
4526 /* Classify a COFF symbol. A couple of targets have globally visible
4527 symbols which are not class C_EXT, and this handles those. It also
4528 recognizes some special PE cases. */
4530 static enum coff_symbol_classification
4531 coff_classify_symbol (abfd, syment)
4532 bfd *abfd;
4533 struct internal_syment *syment;
4535 /* FIXME: This partially duplicates the switch in
4536 coff_slurp_symbol_table. */
4537 switch (syment->n_sclass)
4539 case C_EXT:
4540 case C_WEAKEXT:
4541 #ifdef I960
4542 case C_LEAFEXT:
4543 #endif
4544 #ifdef ARM
4545 case C_THUMBEXT:
4546 case C_THUMBEXTFUNC:
4547 #endif
4548 #ifdef C_SYSTEM
4549 case C_SYSTEM:
4550 #endif
4551 #ifdef COFF_WITH_PE
4552 case C_NT_WEAK:
4553 #endif
4554 if (syment->n_scnum == 0)
4556 if (syment->n_value == 0)
4557 return COFF_SYMBOL_UNDEFINED;
4558 else
4559 return COFF_SYMBOL_COMMON;
4561 return COFF_SYMBOL_GLOBAL;
4563 default:
4564 break;
4567 #ifdef COFF_WITH_PE
4568 if (syment->n_sclass == C_STAT)
4570 if (syment->n_scnum == 0)
4572 /* The Microsoft compiler sometimes generates these if a
4573 small static function is inlined every time it is used.
4574 The function is discarded, but the symbol table entry
4575 remains. */
4576 return COFF_SYMBOL_LOCAL;
4579 #ifdef STRICT_PE_FORMAT
4580 /* This is correct for Microsoft generated objects, but it
4581 breaks gas generated objects. */
4583 if (syment->n_value == 0)
4585 asection *sec;
4586 char buf[SYMNMLEN + 1];
4588 sec = coff_section_from_bfd_index (abfd, syment->n_scnum);
4589 if (sec != NULL
4590 && (strcmp (bfd_get_section_name (abfd, sec),
4591 _bfd_coff_internal_syment_name (abfd, syment, buf))
4592 == 0))
4593 return COFF_SYMBOL_PE_SECTION;
4595 #endif
4597 return COFF_SYMBOL_LOCAL;
4600 if (syment->n_sclass == C_SECTION)
4602 /* In some cases in a DLL generated by the Microsoft linker, the
4603 n_value field will contain garbage. FIXME: This should
4604 probably be handled by the swapping function instead. */
4605 syment->n_value = 0;
4606 if (syment->n_scnum == 0)
4607 return COFF_SYMBOL_UNDEFINED;
4608 return COFF_SYMBOL_PE_SECTION;
4610 #endif /* COFF_WITH_PE */
4612 /* If it is not a global symbol, we presume it is a local symbol. */
4614 if (syment->n_scnum == 0)
4616 char buf[SYMNMLEN + 1];
4618 (*_bfd_error_handler)
4619 (_("warning: %s: local symbol `%s' has no section"),
4620 bfd_get_filename (abfd),
4621 _bfd_coff_internal_syment_name (abfd, syment, buf));
4624 return COFF_SYMBOL_LOCAL;
4628 SUBSUBSECTION
4629 Reading relocations
4631 Coff relocations are easily transformed into the internal BFD form
4632 (@code{arelent}).
4634 Reading a coff relocation table is done in the following stages:
4636 o Read the entire coff relocation table into memory.
4638 o Process each relocation in turn; first swap it from the
4639 external to the internal form.
4641 o Turn the symbol referenced in the relocation's symbol index
4642 into a pointer into the canonical symbol table.
4643 This table is the same as the one returned by a call to
4644 @code{bfd_canonicalize_symtab}. The back end will call that
4645 routine and save the result if a canonicalization hasn't been done.
4647 o The reloc index is turned into a pointer to a howto
4648 structure, in a back end specific way. For instance, the 386
4649 and 960 use the @code{r_type} to directly produce an index
4650 into a howto table vector; the 88k subtracts a number from the
4651 @code{r_type} field and creates an addend field.
4656 #ifndef CALC_ADDEND
4657 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
4659 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
4660 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
4661 coffsym = (obj_symbols (abfd) \
4662 + (cache_ptr->sym_ptr_ptr - symbols)); \
4663 else if (ptr) \
4664 coffsym = coff_symbol_from (abfd, ptr); \
4665 if (coffsym != (coff_symbol_type *) NULL \
4666 && coffsym->native->u.syment.n_scnum == 0) \
4667 cache_ptr->addend = 0; \
4668 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
4669 && ptr->section != (asection *) NULL) \
4670 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
4671 else \
4672 cache_ptr->addend = 0; \
4674 #endif
4676 static boolean
4677 coff_slurp_reloc_table (abfd, asect, symbols)
4678 bfd * abfd;
4679 sec_ptr asect;
4680 asymbol ** symbols;
4682 RELOC *native_relocs;
4683 arelent *reloc_cache;
4684 arelent *cache_ptr;
4686 unsigned int idx;
4688 if (asect->relocation)
4689 return true;
4690 if (asect->reloc_count == 0)
4691 return true;
4692 if (asect->flags & SEC_CONSTRUCTOR)
4693 return true;
4694 if (!coff_slurp_symbol_table (abfd))
4695 return false;
4696 native_relocs =
4697 (RELOC *) buy_and_read (abfd,
4698 asect->rel_filepos,
4699 SEEK_SET,
4700 (size_t) (bfd_coff_relsz (abfd) *
4701 asect->reloc_count));
4702 reloc_cache = (arelent *)
4703 bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent)));
4705 if (reloc_cache == NULL)
4706 return false;
4709 for (idx = 0; idx < asect->reloc_count; idx++)
4711 struct internal_reloc dst;
4712 struct external_reloc *src;
4713 #ifndef RELOC_PROCESSING
4714 asymbol *ptr;
4715 #endif
4717 cache_ptr = reloc_cache + idx;
4718 src = native_relocs + idx;
4720 coff_swap_reloc_in (abfd, src, &dst);
4722 #ifdef RELOC_PROCESSING
4723 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
4724 #else
4725 cache_ptr->address = dst.r_vaddr;
4727 if (dst.r_symndx != -1)
4729 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
4731 (*_bfd_error_handler)
4732 (_("%s: warning: illegal symbol index %ld in relocs"),
4733 bfd_get_filename (abfd), dst.r_symndx);
4734 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
4735 ptr = NULL;
4737 else
4739 cache_ptr->sym_ptr_ptr = (symbols
4740 + obj_convert (abfd)[dst.r_symndx]);
4741 ptr = *(cache_ptr->sym_ptr_ptr);
4744 else
4746 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
4747 ptr = NULL;
4750 /* The symbols definitions that we have read in have been
4751 relocated as if their sections started at 0. But the offsets
4752 refering to the symbols in the raw data have not been
4753 modified, so we have to have a negative addend to compensate.
4755 Note that symbols which used to be common must be left alone */
4757 /* Calculate any reloc addend by looking at the symbol */
4758 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
4760 cache_ptr->address -= asect->vma;
4761 /* !! cache_ptr->section = (asection *) NULL;*/
4763 /* Fill in the cache_ptr->howto field from dst.r_type */
4764 RTYPE2HOWTO (cache_ptr, &dst);
4765 #endif /* RELOC_PROCESSING */
4767 if (cache_ptr->howto == NULL)
4769 (*_bfd_error_handler)
4770 (_("%s: illegal relocation type %d at address 0x%lx"),
4771 bfd_get_filename (abfd), dst.r_type, (long) dst.r_vaddr);
4772 bfd_set_error (bfd_error_bad_value);
4773 return false;
4777 asect->relocation = reloc_cache;
4778 return true;
4781 #ifndef coff_rtype_to_howto
4782 #ifdef RTYPE2HOWTO
4784 /* Get the howto structure for a reloc. This is only used if the file
4785 including this one defines coff_relocate_section to be
4786 _bfd_coff_generic_relocate_section, so it is OK if it does not
4787 always work. It is the responsibility of the including file to
4788 make sure it is reasonable if it is needed. */
4790 static reloc_howto_type *coff_rtype_to_howto
4791 PARAMS ((bfd *, asection *, struct internal_reloc *,
4792 struct coff_link_hash_entry *, struct internal_syment *,
4793 bfd_vma *));
4795 /*ARGSUSED*/
4796 static reloc_howto_type *
4797 coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
4798 bfd *abfd ATTRIBUTE_UNUSED;
4799 asection *sec ATTRIBUTE_UNUSED;
4800 struct internal_reloc *rel;
4801 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED;
4802 struct internal_syment *sym ATTRIBUTE_UNUSED;
4803 bfd_vma *addendp ATTRIBUTE_UNUSED;
4805 arelent genrel;
4807 RTYPE2HOWTO (&genrel, rel);
4808 return genrel.howto;
4811 #else /* ! defined (RTYPE2HOWTO) */
4813 #define coff_rtype_to_howto NULL
4815 #endif /* ! defined (RTYPE2HOWTO) */
4816 #endif /* ! defined (coff_rtype_to_howto) */
4818 /* This is stupid. This function should be a boolean predicate. */
4819 static long
4820 coff_canonicalize_reloc (abfd, section, relptr, symbols)
4821 bfd * abfd;
4822 sec_ptr section;
4823 arelent ** relptr;
4824 asymbol ** symbols;
4826 arelent *tblptr = section->relocation;
4827 unsigned int count = 0;
4830 if (section->flags & SEC_CONSTRUCTOR)
4832 /* this section has relocs made up by us, they are not in the
4833 file, so take them out of their chain and place them into
4834 the data area provided */
4835 arelent_chain *chain = section->constructor_chain;
4836 for (count = 0; count < section->reloc_count; count++)
4838 *relptr++ = &chain->relent;
4839 chain = chain->next;
4843 else
4845 if (! coff_slurp_reloc_table (abfd, section, symbols))
4846 return -1;
4848 tblptr = section->relocation;
4850 for (; count++ < section->reloc_count;)
4851 *relptr++ = tblptr++;
4855 *relptr = 0;
4856 return section->reloc_count;
4859 #ifdef GNU960
4860 file_ptr
4861 coff_sym_filepos (abfd)
4862 bfd *abfd;
4864 return obj_sym_filepos (abfd);
4866 #endif
4868 #ifndef coff_reloc16_estimate
4869 #define coff_reloc16_estimate dummy_reloc16_estimate
4871 static int dummy_reloc16_estimate
4872 PARAMS ((bfd *, asection *, arelent *, unsigned int,
4873 struct bfd_link_info *));
4875 static int
4876 dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
4877 bfd *abfd ATTRIBUTE_UNUSED;
4878 asection *input_section ATTRIBUTE_UNUSED;
4879 arelent *reloc ATTRIBUTE_UNUSED;
4880 unsigned int shrink ATTRIBUTE_UNUSED;
4881 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
4883 abort ();
4884 return 0;
4887 #endif
4889 #ifndef coff_reloc16_extra_cases
4891 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
4893 /* This works even if abort is not declared in any header file. */
4895 static void dummy_reloc16_extra_cases
4896 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
4897 bfd_byte *, unsigned int *, unsigned int *));
4899 static void
4900 dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
4901 dst_ptr)
4902 bfd *abfd ATTRIBUTE_UNUSED;
4903 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
4904 struct bfd_link_order *link_order ATTRIBUTE_UNUSED;
4905 arelent *reloc ATTRIBUTE_UNUSED;
4906 bfd_byte *data ATTRIBUTE_UNUSED;
4907 unsigned int *src_ptr ATTRIBUTE_UNUSED;
4908 unsigned int *dst_ptr ATTRIBUTE_UNUSED;
4910 abort ();
4912 #endif
4914 /* If coff_relocate_section is defined, we can use the optimized COFF
4915 backend linker. Otherwise we must continue to use the old linker. */
4916 #ifdef coff_relocate_section
4917 #ifndef coff_bfd_link_hash_table_create
4918 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
4919 #endif
4920 #ifndef coff_bfd_link_add_symbols
4921 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
4922 #endif
4923 #ifndef coff_bfd_final_link
4924 #define coff_bfd_final_link _bfd_coff_final_link
4925 #endif
4926 #else /* ! defined (coff_relocate_section) */
4927 #define coff_relocate_section NULL
4928 #ifndef coff_bfd_link_hash_table_create
4929 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
4930 #endif
4931 #ifndef coff_bfd_link_add_symbols
4932 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
4933 #endif
4934 #define coff_bfd_final_link _bfd_generic_final_link
4935 #endif /* ! defined (coff_relocate_section) */
4937 #define coff_bfd_link_split_section _bfd_generic_link_split_section
4939 #ifndef coff_start_final_link
4940 #define coff_start_final_link NULL
4941 #endif
4943 #ifndef coff_adjust_symndx
4944 #define coff_adjust_symndx NULL
4945 #endif
4947 #ifndef coff_link_add_one_symbol
4948 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
4949 #endif
4951 #ifndef coff_link_output_has_begun
4953 static boolean coff_link_output_has_begun
4954 PARAMS ((bfd *, struct coff_final_link_info *));
4956 static boolean
4957 coff_link_output_has_begun (abfd, info)
4958 bfd * abfd;
4959 struct coff_final_link_info * info ATTRIBUTE_UNUSED;
4961 return abfd->output_has_begun;
4963 #endif
4965 #ifndef coff_final_link_postscript
4967 static boolean coff_final_link_postscript
4968 PARAMS ((bfd *, struct coff_final_link_info *));
4970 static boolean
4971 coff_final_link_postscript (abfd, pfinfo)
4972 bfd * abfd ATTRIBUTE_UNUSED;
4973 struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED;
4975 return true;
4977 #endif
4979 #ifndef coff_SWAP_aux_in
4980 #define coff_SWAP_aux_in coff_swap_aux_in
4981 #endif
4982 #ifndef coff_SWAP_sym_in
4983 #define coff_SWAP_sym_in coff_swap_sym_in
4984 #endif
4985 #ifndef coff_SWAP_lineno_in
4986 #define coff_SWAP_lineno_in coff_swap_lineno_in
4987 #endif
4988 #ifndef coff_SWAP_aux_out
4989 #define coff_SWAP_aux_out coff_swap_aux_out
4990 #endif
4991 #ifndef coff_SWAP_sym_out
4992 #define coff_SWAP_sym_out coff_swap_sym_out
4993 #endif
4994 #ifndef coff_SWAP_lineno_out
4995 #define coff_SWAP_lineno_out coff_swap_lineno_out
4996 #endif
4997 #ifndef coff_SWAP_reloc_out
4998 #define coff_SWAP_reloc_out coff_swap_reloc_out
4999 #endif
5000 #ifndef coff_SWAP_filehdr_out
5001 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5002 #endif
5003 #ifndef coff_SWAP_aouthdr_out
5004 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5005 #endif
5006 #ifndef coff_SWAP_scnhdr_out
5007 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5008 #endif
5009 #ifndef coff_SWAP_reloc_in
5010 #define coff_SWAP_reloc_in coff_swap_reloc_in
5011 #endif
5012 #ifndef coff_SWAP_filehdr_in
5013 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5014 #endif
5015 #ifndef coff_SWAP_aouthdr_in
5016 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5017 #endif
5018 #ifndef coff_SWAP_scnhdr_in
5019 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5020 #endif
5022 static const bfd_coff_backend_data bfd_coff_std_swap_table =
5024 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5025 coff_SWAP_aux_out, coff_SWAP_sym_out,
5026 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5027 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5028 coff_SWAP_scnhdr_out,
5029 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5030 #ifdef COFF_LONG_FILENAMES
5031 true,
5032 #else
5033 false,
5034 #endif
5035 #ifdef COFF_LONG_SECTION_NAMES
5036 true,
5037 #else
5038 false,
5039 #endif
5040 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5041 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5042 true,
5043 #else
5044 false,
5045 #endif
5046 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5048 #else
5050 #endif
5051 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5052 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5053 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5054 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5055 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5056 coff_classify_symbol, coff_compute_section_file_positions,
5057 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5058 coff_adjust_symndx, coff_link_add_one_symbol,
5059 coff_link_output_has_begun, coff_final_link_postscript
5062 #ifndef coff_close_and_cleanup
5063 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5064 #endif
5066 #ifndef coff_bfd_free_cached_info
5067 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5068 #endif
5070 #ifndef coff_get_section_contents
5071 #define coff_get_section_contents _bfd_generic_get_section_contents
5072 #endif
5074 #ifndef coff_bfd_copy_private_symbol_data
5075 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5076 #endif
5078 #ifndef coff_bfd_copy_private_section_data
5079 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5080 #endif
5082 #ifndef coff_bfd_copy_private_bfd_data
5083 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5084 #endif
5086 #ifndef coff_bfd_merge_private_bfd_data
5087 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5088 #endif
5090 #ifndef coff_bfd_set_private_flags
5091 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5092 #endif
5094 #ifndef coff_bfd_print_private_bfd_data
5095 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5096 #endif
5098 #ifndef coff_bfd_is_local_label_name
5099 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5100 #endif
5102 #ifndef coff_read_minisymbols
5103 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5104 #endif
5106 #ifndef coff_minisymbol_to_symbol
5107 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5108 #endif
5110 /* The reloc lookup routine must be supplied by each individual COFF
5111 backend. */
5112 #ifndef coff_bfd_reloc_type_lookup
5113 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5114 #endif
5116 #ifndef coff_bfd_get_relocated_section_contents
5117 #define coff_bfd_get_relocated_section_contents \
5118 bfd_generic_get_relocated_section_contents
5119 #endif
5121 #ifndef coff_bfd_relax_section
5122 #define coff_bfd_relax_section bfd_generic_relax_section
5123 #endif
5125 #ifndef coff_bfd_gc_sections
5126 #define coff_bfd_gc_sections bfd_generic_gc_sections
5127 #endif
5129 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5130 const bfd_target VAR = \
5132 NAME , \
5133 bfd_target_coff_flavour, \
5134 BFD_ENDIAN_BIG, /* data byte order is big */ \
5135 BFD_ENDIAN_BIG, /* header byte order is big */ \
5136 /* object flags */ \
5137 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5138 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5139 /* section flags */ \
5140 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5141 UNDER, /* leading symbol underscore */ \
5142 '/', /* ar_pad_char */ \
5143 15, /* ar_max_namelen */ \
5145 /* Data conversion functions. */ \
5146 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5147 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5148 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5150 /* Header conversion functions. */ \
5151 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5152 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5153 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5155 /* bfd_check_format */ \
5156 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5157 _bfd_dummy_target }, \
5158 /* bfd_set_format */ \
5159 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5160 /* bfd_write_contents */ \
5161 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5162 bfd_false }, \
5164 BFD_JUMP_TABLE_GENERIC (coff), \
5165 BFD_JUMP_TABLE_COPY (coff), \
5166 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5167 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5168 BFD_JUMP_TABLE_SYMBOLS (coff), \
5169 BFD_JUMP_TABLE_RELOCS (coff), \
5170 BFD_JUMP_TABLE_WRITE (coff), \
5171 BFD_JUMP_TABLE_LINK (coff), \
5172 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5174 ALTERNATIVE, \
5176 COFF_SWAP_TABLE \
5179 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5180 const bfd_target VAR = \
5182 NAME , \
5183 bfd_target_coff_flavour, \
5184 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5185 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5186 /* object flags */ \
5187 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5188 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5189 /* section flags */ \
5190 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5191 UNDER, /* leading symbol underscore */ \
5192 '/', /* ar_pad_char */ \
5193 15, /* ar_max_namelen */ \
5195 /* Data conversion functions. */ \
5196 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5197 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5198 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5199 /* Header conversion functions. */ \
5200 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5201 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5202 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5203 /* bfd_check_format */ \
5204 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5205 _bfd_dummy_target }, \
5206 /* bfd_set_format */ \
5207 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5208 /* bfd_write_contents */ \
5209 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5210 bfd_false }, \
5212 BFD_JUMP_TABLE_GENERIC (coff), \
5213 BFD_JUMP_TABLE_COPY (coff), \
5214 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5215 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5216 BFD_JUMP_TABLE_SYMBOLS (coff), \
5217 BFD_JUMP_TABLE_RELOCS (coff), \
5218 BFD_JUMP_TABLE_WRITE (coff), \
5219 BFD_JUMP_TABLE_LINK (coff), \
5220 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5222 ALTERNATIVE, \
5224 COFF_SWAP_TABLE \