K&R compiler fixes
[binutils.git] / bfd / coffcode.h
blob9474e9345f47850d6306b32ac77fc05b3ab5ed20
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 . void (*_bfd_coff_swap_filehdr_in) PARAMS ((
1128 . bfd *abfd,
1129 . PTR ext,
1130 . PTR in));
1131 . void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
1132 . bfd *abfd,
1133 . PTR ext,
1134 . PTR in));
1135 . void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
1136 . bfd *abfd,
1137 . PTR ext,
1138 . PTR in));
1139 . void (*_bfd_coff_swap_reloc_in) PARAMS ((
1140 . bfd *abfd,
1141 . PTR ext,
1142 . PTR in));
1143 . boolean (*_bfd_coff_bad_format_hook) PARAMS ((
1144 . bfd *abfd,
1145 . PTR internal_filehdr));
1146 . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
1147 . bfd *abfd,
1148 . PTR internal_filehdr));
1149 . PTR (*_bfd_coff_mkobject_hook) PARAMS ((
1150 . bfd *abfd,
1151 . PTR internal_filehdr,
1152 . PTR internal_aouthdr));
1153 . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
1154 . bfd *abfd,
1155 . PTR internal_scnhdr,
1156 . const char *name,
1157 . asection *section));
1158 . void (*_bfd_set_alignment_hook) PARAMS ((
1159 . bfd *abfd,
1160 . asection *sec,
1161 . PTR internal_scnhdr));
1162 . boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
1163 . bfd *abfd));
1164 . boolean (*_bfd_coff_symname_in_debug) PARAMS ((
1165 . bfd *abfd,
1166 . struct internal_syment *sym));
1167 . boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
1168 . bfd *abfd,
1169 . combined_entry_type *table_base,
1170 . combined_entry_type *symbol,
1171 . unsigned int indaux,
1172 . combined_entry_type *aux));
1173 . boolean (*_bfd_coff_print_aux) PARAMS ((
1174 . bfd *abfd,
1175 . FILE *file,
1176 . combined_entry_type *table_base,
1177 . combined_entry_type *symbol,
1178 . combined_entry_type *aux,
1179 . unsigned int indaux));
1180 . void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
1181 . bfd *abfd,
1182 . struct bfd_link_info *link_info,
1183 . struct bfd_link_order *link_order,
1184 . arelent *reloc,
1185 . bfd_byte *data,
1186 . unsigned int *src_ptr,
1187 . unsigned int *dst_ptr));
1188 . int (*_bfd_coff_reloc16_estimate) PARAMS ((
1189 . bfd *abfd,
1190 . asection *input_section,
1191 . arelent *r,
1192 . unsigned int shrink,
1193 . struct bfd_link_info *link_info));
1194 . enum coff_symbol_classification (*_bfd_coff_classify_symbol) PARAMS ((
1195 . bfd *abfd,
1196 . struct internal_syment *));
1197 . boolean (*_bfd_coff_compute_section_file_positions) PARAMS ((
1198 . bfd *abfd));
1199 . boolean (*_bfd_coff_start_final_link) PARAMS ((
1200 . bfd *output_bfd,
1201 . struct bfd_link_info *info));
1202 . boolean (*_bfd_coff_relocate_section) PARAMS ((
1203 . bfd *output_bfd,
1204 . struct bfd_link_info *info,
1205 . bfd *input_bfd,
1206 . asection *input_section,
1207 . bfd_byte *contents,
1208 . struct internal_reloc *relocs,
1209 . struct internal_syment *syms,
1210 . asection **sections));
1211 . reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
1212 . bfd *abfd,
1213 . asection *sec,
1214 . struct internal_reloc *rel,
1215 . struct coff_link_hash_entry *h,
1216 . struct internal_syment *sym,
1217 . bfd_vma *addendp));
1218 . boolean (*_bfd_coff_adjust_symndx) PARAMS ((
1219 . bfd *obfd,
1220 . struct bfd_link_info *info,
1221 . bfd *ibfd,
1222 . asection *sec,
1223 . struct internal_reloc *reloc,
1224 . boolean *adjustedp));
1225 . boolean (*_bfd_coff_link_add_one_symbol) PARAMS ((
1226 . struct bfd_link_info *info,
1227 . bfd *abfd,
1228 . const char *name,
1229 . flagword flags,
1230 . asection *section,
1231 . bfd_vma value,
1232 . const char *string,
1233 . boolean copy,
1234 . boolean collect,
1235 . struct bfd_link_hash_entry **hashp));
1237 . boolean (*_bfd_coff_link_output_has_begun) PARAMS ((
1238 . bfd * abfd,
1239 . struct coff_final_link_info * pfinfo));
1240 . boolean (*_bfd_coff_final_link_postscript) PARAMS ((
1241 . bfd * abfd,
1242 . struct coff_final_link_info * pfinfo));
1244 .} bfd_coff_backend_data;
1246 .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1248 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1249 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1251 .#define bfd_coff_swap_sym_in(a,e,i) \
1252 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1254 .#define bfd_coff_swap_lineno_in(a,e,i) \
1255 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1257 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1258 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1260 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1261 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1263 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1264 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1266 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1267 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1269 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1270 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1272 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1273 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1275 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1276 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1278 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1279 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1280 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1281 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1282 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1283 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
1284 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1285 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1286 .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1287 .#define bfd_coff_long_section_names(abfd) \
1288 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1289 .#define bfd_coff_default_section_alignment_power(abfd) \
1290 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1291 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1292 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1294 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1295 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1297 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1298 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1300 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1301 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1303 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1304 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1306 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1307 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1308 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1309 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
1311 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section)\
1312 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1313 . (abfd, scnhdr, name, section))
1315 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1316 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1318 .#define bfd_coff_slurp_symbol_table(abfd)\
1319 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1321 .#define bfd_coff_symname_in_debug(abfd, sym)\
1322 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1324 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1325 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1326 . (abfd, file, base, symbol, aux, indaux))
1328 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
1329 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1330 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1332 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1333 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1334 . (abfd, section, reloc, shrink, link_info))
1336 .#define bfd_coff_classify_symbol(abfd, sym)\
1337 . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1338 . (abfd, sym))
1340 .#define bfd_coff_compute_section_file_positions(abfd)\
1341 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1342 . (abfd))
1344 .#define bfd_coff_start_final_link(obfd, info)\
1345 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1346 . (obfd, info))
1347 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1348 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1349 . (obfd, info, ibfd, o, con, rel, isyms, secs))
1350 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1351 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1352 . (abfd, sec, rel, h, sym, addendp))
1353 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1354 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1355 . (obfd, info, ibfd, sec, rel, adjustedp))
1356 .#define bfd_coff_link_add_one_symbol(info,abfd,name,flags,section,value,string,cp,coll,hashp)\
1357 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1358 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1360 .#define bfd_coff_link_output_has_begun(a,p) \
1361 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
1362 .#define bfd_coff_final_link_postscript(a,p) \
1363 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
1367 /* See whether the magic number matches. */
1369 static boolean
1370 coff_bad_format_hook (abfd, filehdr)
1371 bfd * abfd ATTRIBUTE_UNUSED;
1372 PTR filehdr;
1374 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1376 if (BADMAG (*internal_f))
1377 return false;
1379 /* if the optional header is NULL or not the correct size then
1380 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1381 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1382 optional header is of a different size.
1384 But the mips keeps extra stuff in it's opthdr, so dont check
1385 when doing that
1388 #if defined(M88) || defined(I960)
1389 if (internal_f->f_opthdr != 0 && bfd_coff_aoutsz (abfd) != internal_f->f_opthdr)
1390 return false;
1391 #endif
1393 return true;
1396 /* Check whether this section uses an alignment other than the
1397 default. */
1399 static void
1400 coff_set_custom_section_alignment (abfd, section, alignment_table, table_size)
1401 bfd *abfd ATTRIBUTE_UNUSED;
1402 asection *section;
1403 const struct coff_section_alignment_entry *alignment_table;
1404 const unsigned int table_size;
1406 const unsigned int default_alignment = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1407 unsigned int i;
1409 for (i = 0; i < table_size; ++i)
1411 const char *secname = bfd_get_section_name (abfd, section);
1412 if (alignment_table[i].comparison_length == (unsigned int) -1
1413 ? strcmp (alignment_table[i].name, secname) == 0
1414 : strncmp (alignment_table[i].name, secname,
1415 alignment_table[i].comparison_length) == 0)
1416 break;
1418 if (i >= table_size)
1419 return;
1421 if (alignment_table[i].default_alignment_min != COFF_ALIGNMENT_FIELD_EMPTY
1422 && default_alignment < alignment_table[i].default_alignment_min)
1423 return;
1425 if (alignment_table[i].default_alignment_max != COFF_ALIGNMENT_FIELD_EMPTY
1426 && default_alignment > alignment_table[i].default_alignment_max)
1427 return;
1429 section->alignment_power = alignment_table[i].alignment_power;
1432 /* Custom section alignment records. */
1434 static const struct coff_section_alignment_entry
1435 coff_section_alignment_table[] =
1437 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1438 COFF_SECTION_ALIGNMENT_ENTRIES,
1439 #endif
1440 /* There must not be any gaps between .stabstr sections. */
1441 { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1442 1, COFF_ALIGNMENT_FIELD_EMPTY, 0 },
1443 /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */
1444 { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1445 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1446 /* Similarly for the .ctors and .dtors sections. */
1447 { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1448 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1449 { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1450 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }
1453 static const unsigned int coff_section_alignment_table_size =
1454 sizeof coff_section_alignment_table / sizeof coff_section_alignment_table[0];
1456 /* Initialize a section structure with information peculiar to this
1457 particular implementation of COFF. */
1459 static boolean
1460 coff_new_section_hook (abfd, section)
1461 bfd *abfd;
1462 asection *section;
1464 combined_entry_type *native;
1466 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1468 #ifdef RS6000COFF_C
1469 if (xcoff_data (abfd)->text_align_power != 0
1470 && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
1471 section->alignment_power = xcoff_data (abfd)->text_align_power;
1472 if (xcoff_data (abfd)->data_align_power != 0
1473 && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
1474 section->alignment_power = xcoff_data (abfd)->data_align_power;
1475 #endif
1477 /* Allocate aux records for section symbols, to store size and
1478 related info.
1480 @@ The 10 is a guess at a plausible maximum number of aux entries
1481 (but shouldn't be a constant). */
1482 native = ((combined_entry_type *)
1483 bfd_zalloc (abfd, sizeof (combined_entry_type) * 10));
1484 if (native == NULL)
1485 return false;
1487 /* We don't need to set up n_name, n_value, or n_scnum in the native
1488 symbol information, since they'll be overriden by the BFD symbol
1489 anyhow. However, we do need to set the type and storage class,
1490 in case this symbol winds up getting written out. The value 0
1491 for n_numaux is already correct. */
1493 native->u.syment.n_type = T_NULL;
1494 native->u.syment.n_sclass = C_STAT;
1496 coffsymbol (section->symbol)->native = native;
1498 coff_set_custom_section_alignment (abfd, section,
1499 coff_section_alignment_table,
1500 coff_section_alignment_table_size);
1502 return true;
1505 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1507 /* Set the alignment of a BFD section. */
1509 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1511 static void
1512 coff_set_alignment_hook (abfd, section, scnhdr)
1513 bfd * abfd ATTRIBUTE_UNUSED;
1514 asection * section;
1515 PTR scnhdr;
1517 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1518 unsigned int i;
1520 #ifdef I960
1521 /* Extract ALIGN from 2**ALIGN stored in section header */
1522 for (i = 0; i < 32; i++)
1523 if ((1 << i) >= hdr->s_align)
1524 break;
1525 #endif
1526 #ifdef TIC80COFF
1527 /* TI tools puts the alignment power in bits 8-11 */
1528 i = (hdr->s_flags >> 8) & 0xF ;
1529 #endif
1530 #ifdef COFF_DECODE_ALIGNMENT
1531 i = COFF_DECODE_ALIGNMENT(hdr->s_flags);
1532 #endif
1533 section->alignment_power = i;
1535 #ifdef coff_set_section_load_page
1536 coff_set_section_load_page (section, hdr->s_page);
1537 #endif
1540 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1541 #ifdef COFF_WITH_PE
1543 /* a couple of macros to help setting the alignment power field */
1544 #define ALIGN_SET(field,x,y) \
1545 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
1547 section->alignment_power = y;\
1550 #define ELIFALIGN_SET(field,x,y) \
1551 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
1553 section->alignment_power = y;\
1556 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1558 static void
1559 coff_set_alignment_hook (abfd, section, scnhdr)
1560 bfd * abfd ATTRIBUTE_UNUSED;
1561 asection * section;
1562 PTR scnhdr;
1564 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1566 ALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_64BYTES, 6)
1567 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_32BYTES, 5)
1568 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_16BYTES, 4)
1569 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_8BYTES, 3)
1570 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_4BYTES, 2)
1571 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_2BYTES, 1)
1572 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_1BYTES, 0)
1574 /* In a PE image file, the s_paddr field holds the virtual size of a
1575 section, while the s_size field holds the raw size. We also keep
1576 the original section flag value, since not every bit can be
1577 mapped onto a generic BFD section bit. */
1578 if (coff_section_data (abfd, section) == NULL)
1580 section->used_by_bfd =
1581 (PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata));
1582 if (section->used_by_bfd == NULL)
1584 /* FIXME: Return error. */
1585 abort ();
1588 if (pei_section_data (abfd, section) == NULL)
1590 coff_section_data (abfd, section)->tdata =
1591 (PTR) bfd_zalloc (abfd, sizeof (struct pei_section_tdata));
1592 if (coff_section_data (abfd, section)->tdata == NULL)
1594 /* FIXME: Return error. */
1595 abort ();
1598 pei_section_data (abfd, section)->virt_size = hdr->s_paddr;
1599 pei_section_data (abfd, section)->pe_flags = hdr->s_flags;
1601 section->lma = hdr->s_vaddr;
1603 #undef ALIGN_SET
1604 #undef ELIFALIGN_SET
1606 #else /* ! COFF_WITH_PE */
1607 #ifdef RS6000COFF_C
1609 /* We grossly abuse this function to handle XCOFF overflow headers.
1610 When we see one, we correct the reloc and line number counts in the
1611 real header, and remove the section we just created. */
1613 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1615 static void
1616 coff_set_alignment_hook (abfd, section, scnhdr)
1617 bfd *abfd;
1618 asection *section;
1619 PTR scnhdr;
1621 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1622 asection *real_sec;
1623 asection **ps;
1625 if ((hdr->s_flags & STYP_OVRFLO) == 0)
1626 return;
1628 real_sec = coff_section_from_bfd_index (abfd, hdr->s_nreloc);
1629 if (real_sec == NULL)
1630 return;
1632 real_sec->reloc_count = hdr->s_paddr;
1633 real_sec->lineno_count = hdr->s_vaddr;
1635 for (ps = &abfd->sections; *ps != NULL; ps = &(*ps)->next)
1637 if (*ps == section)
1639 *ps = (*ps)->next;
1640 --abfd->section_count;
1641 break;
1646 #else /* ! RS6000COFF_C */
1648 #define coff_set_alignment_hook \
1649 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1651 #endif /* ! RS6000COFF_C */
1652 #endif /* ! COFF_WITH_PE */
1653 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1655 #ifndef coff_mkobject
1657 static boolean coff_mkobject PARAMS ((bfd *));
1659 static boolean
1660 coff_mkobject (abfd)
1661 bfd * abfd;
1663 coff_data_type *coff;
1665 abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, sizeof (coff_data_type));
1666 if (abfd->tdata.coff_obj_data == 0)
1667 return false;
1668 coff = coff_data (abfd);
1669 coff->symbols = (coff_symbol_type *) NULL;
1670 coff->conversion_table = (unsigned int *) NULL;
1671 coff->raw_syments = (struct coff_ptr_struct *) NULL;
1672 coff->relocbase = 0;
1673 coff->local_toc_sym_map = 0;
1675 /* make_abs_section(abfd);*/
1677 return true;
1679 #endif
1681 /* Create the COFF backend specific information. */
1682 #ifndef coff_mkobject_hook
1683 static PTR
1684 coff_mkobject_hook (abfd, filehdr, aouthdr)
1685 bfd * abfd;
1686 PTR filehdr;
1687 PTR aouthdr ATTRIBUTE_UNUSED;
1689 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1690 coff_data_type *coff;
1692 if (coff_mkobject (abfd) == false)
1693 return NULL;
1695 coff = coff_data (abfd);
1697 coff->sym_filepos = internal_f->f_symptr;
1699 /* These members communicate important constants about the symbol
1700 table to GDB's symbol-reading code. These `constants'
1701 unfortunately vary among coff implementations... */
1702 coff->local_n_btmask = N_BTMASK;
1703 coff->local_n_btshft = N_BTSHFT;
1704 coff->local_n_tmask = N_TMASK;
1705 coff->local_n_tshift = N_TSHIFT;
1706 coff->local_symesz = bfd_coff_symesz (abfd);
1707 coff->local_auxesz = bfd_coff_auxesz (abfd);
1708 coff->local_linesz = bfd_coff_linesz (abfd);
1710 coff->timestamp = internal_f->f_timdat;
1712 obj_raw_syment_count (abfd) =
1713 obj_conv_table_size (abfd) =
1714 internal_f->f_nsyms;
1716 #ifdef RS6000COFF_C
1717 if ((internal_f->f_flags & F_SHROBJ) != 0)
1718 abfd->flags |= DYNAMIC;
1719 if (aouthdr != NULL && internal_f->f_opthdr >= bfd_coff_aoutsz (abfd))
1721 struct internal_aouthdr *internal_a =
1722 (struct internal_aouthdr *) aouthdr;
1723 struct xcoff_tdata *xcoff;
1725 xcoff = xcoff_data (abfd);
1726 xcoff->full_aouthdr = true;
1727 xcoff->toc = internal_a->o_toc;
1728 xcoff->sntoc = internal_a->o_sntoc;
1729 xcoff->snentry = internal_a->o_snentry;
1730 xcoff->text_align_power = internal_a->o_algntext;
1731 xcoff->data_align_power = internal_a->o_algndata;
1732 xcoff->modtype = internal_a->o_modtype;
1733 xcoff->cputype = internal_a->o_cputype;
1734 xcoff->maxdata = internal_a->o_maxdata;
1735 xcoff->maxstack = internal_a->o_maxstack;
1737 #endif
1739 #ifdef ARM
1740 /* Set the flags field from the COFF header read in */
1741 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
1742 coff->flags = 0;
1743 #endif
1745 #ifdef COFF_WITH_PE
1746 /* FIXME: I'm not sure this is ever executed, since peicode.h
1747 defines coff_mkobject_hook. */
1748 if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
1749 abfd->flags |= HAS_DEBUG;
1750 #endif
1752 return (PTR) coff;
1754 #endif
1756 /* Determine the machine architecture and type. FIXME: This is target
1757 dependent because the magic numbers are defined in the target
1758 dependent header files. But there is no particular need for this.
1759 If the magic numbers were moved to a separate file, this function
1760 would be target independent and would also be much more successful
1761 at linking together COFF files for different architectures. */
1763 static boolean
1764 coff_set_arch_mach_hook (abfd, filehdr)
1765 bfd *abfd;
1766 PTR filehdr;
1768 long machine;
1769 enum bfd_architecture arch;
1770 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1772 machine = 0;
1773 switch (internal_f->f_magic)
1775 #ifdef PPCMAGIC
1776 case PPCMAGIC:
1777 arch = bfd_arch_powerpc;
1778 machine = 0; /* what does this mean? (krk) */
1779 break;
1780 #endif
1781 #ifdef I386MAGIC
1782 case I386MAGIC:
1783 case I386PTXMAGIC:
1784 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */
1785 case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */
1786 arch = bfd_arch_i386;
1787 machine = 0;
1788 break;
1789 #endif
1790 #ifdef IA64MAGIC
1791 case IA64MAGIC:
1792 arch = bfd_arch_ia64;
1793 machine = 0;
1794 break;
1795 #endif
1796 #ifdef A29K_MAGIC_BIG
1797 case A29K_MAGIC_BIG:
1798 case A29K_MAGIC_LITTLE:
1799 arch = bfd_arch_a29k;
1800 machine = 0;
1801 break;
1802 #endif
1803 #ifdef ARMMAGIC
1804 case ARMMAGIC:
1805 case ARMPEMAGIC:
1806 case THUMBPEMAGIC:
1807 arch = bfd_arch_arm;
1808 switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK)
1810 case F_ARM_2: machine = bfd_mach_arm_2; break;
1811 case F_ARM_2a: machine = bfd_mach_arm_2a; break;
1812 case F_ARM_3: machine = bfd_mach_arm_3; break;
1813 default:
1814 case F_ARM_3M: machine = bfd_mach_arm_3M; break;
1815 case F_ARM_4: machine = bfd_mach_arm_4; break;
1816 case F_ARM_4T: machine = bfd_mach_arm_4T; break;
1817 case F_ARM_5: machine = bfd_mach_arm_5; break;
1819 break;
1820 #endif
1821 #ifdef MC68MAGIC
1822 case MC68MAGIC:
1823 case M68MAGIC:
1824 #ifdef MC68KBCSMAGIC
1825 case MC68KBCSMAGIC:
1826 #endif
1827 #ifdef APOLLOM68KMAGIC
1828 case APOLLOM68KMAGIC:
1829 #endif
1830 #ifdef LYNXCOFFMAGIC
1831 case LYNXCOFFMAGIC:
1832 #endif
1833 arch = bfd_arch_m68k;
1834 machine = bfd_mach_m68020;
1835 break;
1836 #endif
1837 #ifdef MC88MAGIC
1838 case MC88MAGIC:
1839 case MC88DMAGIC:
1840 case MC88OMAGIC:
1841 arch = bfd_arch_m88k;
1842 machine = 88100;
1843 break;
1844 #endif
1845 #ifdef Z8KMAGIC
1846 case Z8KMAGIC:
1847 arch = bfd_arch_z8k;
1848 switch (internal_f->f_flags & F_MACHMASK)
1850 case F_Z8001:
1851 machine = bfd_mach_z8001;
1852 break;
1853 case F_Z8002:
1854 machine = bfd_mach_z8002;
1855 break;
1856 default:
1857 return false;
1859 break;
1860 #endif
1861 #ifdef I860
1862 case I860MAGIC:
1863 arch = bfd_arch_i860;
1864 break;
1865 #endif
1866 #ifdef I960
1867 #ifdef I960ROMAGIC
1868 case I960ROMAGIC:
1869 case I960RWMAGIC:
1870 arch = bfd_arch_i960;
1871 switch (F_I960TYPE & internal_f->f_flags)
1873 default:
1874 case F_I960CORE:
1875 machine = bfd_mach_i960_core;
1876 break;
1877 case F_I960KB:
1878 machine = bfd_mach_i960_kb_sb;
1879 break;
1880 case F_I960MC:
1881 machine = bfd_mach_i960_mc;
1882 break;
1883 case F_I960XA:
1884 machine = bfd_mach_i960_xa;
1885 break;
1886 case F_I960CA:
1887 machine = bfd_mach_i960_ca;
1888 break;
1889 case F_I960KA:
1890 machine = bfd_mach_i960_ka_sa;
1891 break;
1892 case F_I960JX:
1893 machine = bfd_mach_i960_jx;
1894 break;
1895 case F_I960HX:
1896 machine = bfd_mach_i960_hx;
1897 break;
1899 break;
1900 #endif
1901 #endif
1903 #ifdef RS6000COFF_C
1904 case U802ROMAGIC:
1905 case U802WRMAGIC:
1906 case U802TOCMAGIC:
1908 int cputype;
1910 if (xcoff_data (abfd)->cputype != -1)
1911 cputype = xcoff_data (abfd)->cputype & 0xff;
1912 else
1914 /* We did not get a value from the a.out header. If the
1915 file has not been stripped, we may be able to get the
1916 architecture information from the first symbol, if it
1917 is a .file symbol. */
1918 if (obj_raw_syment_count (abfd) == 0)
1919 cputype = 0;
1920 else
1922 bfd_byte *buf;
1923 struct internal_syment sym;
1925 buf = (bfd_byte *) bfd_malloc (bfd_coff_symesz (abfd));
1926 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1927 || (bfd_read (buf, 1, bfd_coff_symesz (abfd), abfd)
1928 != bfd_coff_symesz (abfd)))
1930 free (buf);
1931 return false;
1933 coff_swap_sym_in (abfd, (PTR) buf, (PTR) &sym);
1934 if (sym.n_sclass == C_FILE)
1935 cputype = sym.n_type & 0xff;
1936 else
1937 cputype = 0;
1938 free (buf);
1942 /* FIXME: We don't handle all cases here. */
1943 switch (cputype)
1945 default:
1946 case 0:
1947 #ifdef POWERMAC
1948 /* PowerPC Macs use the same magic numbers as RS/6000
1949 (because that's how they were bootstrapped originally),
1950 but they are always PowerPC architecture. */
1951 arch = bfd_arch_powerpc;
1952 machine = 0;
1953 #else
1954 arch = bfd_arch_rs6000;
1955 machine = 6000;
1956 #endif /* POWERMAC */
1957 break;
1959 case 1:
1960 arch = bfd_arch_powerpc;
1961 machine = 601;
1962 break;
1963 case 2: /* 64 bit PowerPC */
1964 arch = bfd_arch_powerpc;
1965 machine = 620;
1966 break;
1967 case 3:
1968 arch = bfd_arch_powerpc;
1969 machine = 0;
1970 break;
1971 case 4:
1972 arch = bfd_arch_rs6000;
1973 machine = 6000;
1974 break;
1977 break;
1978 #endif
1980 #ifdef WE32KMAGIC
1981 case WE32KMAGIC:
1982 arch = bfd_arch_we32k;
1983 machine = 0;
1984 break;
1985 #endif
1987 #ifdef H8300MAGIC
1988 case H8300MAGIC:
1989 arch = bfd_arch_h8300;
1990 machine = bfd_mach_h8300;
1991 /* !! FIXME this probably isn't the right place for this */
1992 abfd->flags |= BFD_IS_RELAXABLE;
1993 break;
1994 #endif
1996 #ifdef H8300HMAGIC
1997 case H8300HMAGIC:
1998 arch = bfd_arch_h8300;
1999 machine = bfd_mach_h8300h;
2000 /* !! FIXME this probably isn't the right place for this */
2001 abfd->flags |= BFD_IS_RELAXABLE;
2002 break;
2003 #endif
2005 #ifdef H8300SMAGIC
2006 case H8300SMAGIC:
2007 arch = bfd_arch_h8300;
2008 machine = bfd_mach_h8300s;
2009 /* !! FIXME this probably isn't the right place for this */
2010 abfd->flags |= BFD_IS_RELAXABLE;
2011 break;
2012 #endif
2014 #ifdef SH_ARCH_MAGIC_BIG
2015 case SH_ARCH_MAGIC_BIG:
2016 case SH_ARCH_MAGIC_LITTLE:
2017 #ifdef COFF_WITH_PE
2018 case SH_ARCH_MAGIC_WINCE:
2019 #endif
2020 arch = bfd_arch_sh;
2021 machine = 0;
2022 break;
2023 #endif
2025 #ifdef MIPS_ARCH_MAGIC_WINCE
2026 case MIPS_ARCH_MAGIC_WINCE:
2027 arch = bfd_arch_mips;
2028 machine = 0;
2029 break;
2030 #endif
2032 #ifdef H8500MAGIC
2033 case H8500MAGIC:
2034 arch = bfd_arch_h8500;
2035 machine = 0;
2036 break;
2037 #endif
2039 #ifdef SPARCMAGIC
2040 case SPARCMAGIC:
2041 #ifdef LYNXCOFFMAGIC
2042 case LYNXCOFFMAGIC:
2043 #endif
2044 arch = bfd_arch_sparc;
2045 machine = 0;
2046 break;
2047 #endif
2049 #ifdef TIC30MAGIC
2050 case TIC30MAGIC:
2051 arch = bfd_arch_tic30;
2052 break;
2053 #endif
2055 #ifdef TICOFF0MAGIC
2056 #ifdef TICOFF_TARGET_ARCH
2057 /* this TI COFF section should be used by all new TI COFF v0 targets */
2058 case TICOFF0MAGIC:
2059 arch = TICOFF_TARGET_ARCH;
2060 break;
2061 #endif
2062 #endif
2064 #ifdef TICOFF1MAGIC
2065 /* this TI COFF section should be used by all new TI COFF v1/2 targets */
2066 /* TI COFF1 and COFF2 use the target_id field to specify which arch */
2067 case TICOFF1MAGIC:
2068 case TICOFF2MAGIC:
2069 switch (internal_f->f_target_id)
2071 #ifdef TI_TARGET_ID
2072 case TI_TARGET_ID:
2073 arch = TICOFF_TARGET_ARCH;
2074 break;
2075 #endif
2076 default:
2077 arch = bfd_arch_obscure;
2078 (*_bfd_error_handler)
2079 (_("Unrecognized TI COFF target id '0x%x'"),
2080 internal_f->f_target_id);
2081 break;
2083 break;
2084 #endif
2086 #ifdef TIC80_ARCH_MAGIC
2087 case TIC80_ARCH_MAGIC:
2088 arch = bfd_arch_tic80;
2089 break;
2090 #endif
2092 #ifdef MCOREMAGIC
2093 case MCOREMAGIC:
2094 arch = bfd_arch_mcore;
2095 break;
2096 #endif
2097 default: /* Unreadable input file type */
2098 arch = bfd_arch_obscure;
2099 break;
2102 bfd_default_set_arch_mach (abfd, arch, machine);
2103 return true;
2106 #ifdef SYMNAME_IN_DEBUG
2108 static boolean symname_in_debug_hook
2109 PARAMS ((bfd *, struct internal_syment *));
2111 static boolean
2112 symname_in_debug_hook (abfd, sym)
2113 bfd * abfd ATTRIBUTE_UNUSED;
2114 struct internal_syment *sym;
2116 return SYMNAME_IN_DEBUG (sym) ? true : false;
2119 #else
2121 #define symname_in_debug_hook \
2122 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2124 #endif
2126 #ifdef RS6000COFF_C
2128 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2130 static boolean coff_pointerize_aux_hook
2131 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2132 unsigned int, combined_entry_type *));
2134 /*ARGSUSED*/
2135 static boolean
2136 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2137 bfd *abfd ATTRIBUTE_UNUSED;
2138 combined_entry_type *table_base;
2139 combined_entry_type *symbol;
2140 unsigned int indaux;
2141 combined_entry_type *aux;
2143 int class = symbol->u.syment.n_sclass;
2145 if ((class == C_EXT || class == C_HIDEXT)
2146 && indaux + 1 == symbol->u.syment.n_numaux)
2148 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2150 aux->u.auxent.x_csect.x_scnlen.p =
2151 table_base + aux->u.auxent.x_csect.x_scnlen.l;
2152 aux->fix_scnlen = 1;
2155 /* Return true to indicate that the caller should not do any
2156 further work on this auxent. */
2157 return true;
2160 /* Return false to indicate that this auxent should be handled by
2161 the caller. */
2162 return false;
2165 #else
2166 #ifdef I960
2168 /* We don't want to pointerize bal entries. */
2170 static boolean coff_pointerize_aux_hook
2171 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2172 unsigned int, combined_entry_type *));
2174 /*ARGSUSED*/
2175 static boolean
2176 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2177 bfd *abfd ATTRIBUTE_UNUSED;
2178 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2179 combined_entry_type *symbol;
2180 unsigned int indaux;
2181 combined_entry_type *aux ATTRIBUTE_UNUSED;
2183 /* Return true if we don't want to pointerize this aux entry, which
2184 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2185 return (indaux == 1
2186 && (symbol->u.syment.n_sclass == C_LEAFPROC
2187 || symbol->u.syment.n_sclass == C_LEAFSTAT
2188 || symbol->u.syment.n_sclass == C_LEAFEXT));
2191 #else /* ! I960 */
2193 #define coff_pointerize_aux_hook 0
2195 #endif /* ! I960 */
2196 #endif /* ! RS6000COFF_C */
2198 /* Print an aux entry. This returns true if it has printed it. */
2200 static boolean coff_print_aux
2201 PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
2202 combined_entry_type *, unsigned int));
2204 static boolean
2205 coff_print_aux (abfd, file, table_base, symbol, aux, indaux)
2206 bfd *abfd ATTRIBUTE_UNUSED;
2207 FILE *file ATTRIBUTE_UNUSED;
2208 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2209 combined_entry_type *symbol ATTRIBUTE_UNUSED;
2210 combined_entry_type *aux ATTRIBUTE_UNUSED;
2211 unsigned int indaux ATTRIBUTE_UNUSED;
2213 #ifdef RS6000COFF_C
2214 if ((symbol->u.syment.n_sclass == C_EXT
2215 || symbol->u.syment.n_sclass == C_HIDEXT)
2216 && indaux + 1 == symbol->u.syment.n_numaux)
2218 /* This is a csect entry. */
2219 fprintf (file, "AUX ");
2220 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
2222 BFD_ASSERT (! aux->fix_scnlen);
2223 fprintf (file, "val %5ld", aux->u.auxent.x_csect.x_scnlen.l);
2225 else
2227 fprintf (file, "indx ");
2228 if (! aux->fix_scnlen)
2229 fprintf (file, "%4ld", aux->u.auxent.x_csect.x_scnlen.l);
2230 else
2231 fprintf (file, "%4ld",
2232 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
2234 fprintf (file,
2235 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2236 aux->u.auxent.x_csect.x_parmhash,
2237 (unsigned int) aux->u.auxent.x_csect.x_snhash,
2238 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
2239 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
2240 (unsigned int) aux->u.auxent.x_csect.x_smclas,
2241 aux->u.auxent.x_csect.x_stab,
2242 (unsigned int) aux->u.auxent.x_csect.x_snstab);
2243 return true;
2245 #endif
2247 /* Return false to indicate that no special action was taken. */
2248 return false;
2252 SUBSUBSECTION
2253 Writing relocations
2255 To write relocations, the back end steps though the
2256 canonical relocation table and create an
2257 @code{internal_reloc}. The symbol index to use is removed from
2258 the @code{offset} field in the symbol table supplied. The
2259 address comes directly from the sum of the section base
2260 address and the relocation offset; the type is dug directly
2261 from the howto field. Then the @code{internal_reloc} is
2262 swapped into the shape of an @code{external_reloc} and written
2263 out to disk.
2267 #ifdef TARG_AUX
2269 static int compare_arelent_ptr PARAMS ((const PTR, const PTR));
2271 /* AUX's ld wants relocations to be sorted */
2272 static int
2273 compare_arelent_ptr (x, y)
2274 const PTR x;
2275 const PTR y;
2277 const arelent **a = (const arelent **) x;
2278 const arelent **b = (const arelent **) y;
2279 bfd_size_type aadr = (*a)->address;
2280 bfd_size_type badr = (*b)->address;
2282 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
2285 #endif /* TARG_AUX */
2287 static boolean
2288 coff_write_relocs (abfd, first_undef)
2289 bfd * abfd;
2290 int first_undef;
2292 asection *s;
2294 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
2296 unsigned int i;
2297 struct external_reloc dst;
2298 arelent **p;
2300 #ifndef TARG_AUX
2301 p = s->orelocation;
2302 #else
2303 /* sort relocations before we write them out */
2304 p = (arelent **) bfd_malloc (s->reloc_count * sizeof (arelent *));
2305 if (p == NULL && s->reloc_count > 0)
2306 return false;
2307 memcpy (p, s->orelocation, s->reloc_count * sizeof (arelent *));
2308 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
2309 #endif
2311 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
2312 return false;
2313 for (i = 0; i < s->reloc_count; i++)
2315 struct internal_reloc n;
2316 arelent *q = p[i];
2317 memset ((PTR) & n, 0, sizeof (n));
2319 /* Now we've renumbered the symbols we know where the
2320 undefined symbols live in the table. Check the reloc
2321 entries for symbols who's output bfd isn't the right one.
2322 This is because the symbol was undefined (which means
2323 that all the pointers are never made to point to the same
2324 place). This is a bad thing,'cause the symbols attached
2325 to the output bfd are indexed, so that the relocation
2326 entries know which symbol index they point to. So we
2327 have to look up the output symbol here. */
2329 if (q->sym_ptr_ptr[0]->the_bfd != abfd)
2331 int i;
2332 const char *sname = q->sym_ptr_ptr[0]->name;
2333 asymbol **outsyms = abfd->outsymbols;
2334 for (i = first_undef; outsyms[i]; i++)
2336 const char *intable = outsyms[i]->name;
2337 if (strcmp (intable, sname) == 0) {
2338 /* got a hit, so repoint the reloc */
2339 q->sym_ptr_ptr = outsyms + i;
2340 break;
2345 n.r_vaddr = q->address + s->vma;
2347 #ifdef R_IHCONST
2348 /* The 29k const/consth reloc pair is a real kludge. The consth
2349 part doesn't have a symbol; it has an offset. So rebuilt
2350 that here. */
2351 if (q->howto->type == R_IHCONST)
2352 n.r_symndx = q->addend;
2353 else
2354 #endif
2355 if (q->sym_ptr_ptr)
2357 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2358 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q,s))
2359 #else
2360 if (q->sym_ptr_ptr == bfd_abs_section_ptr->symbol_ptr_ptr)
2361 #endif
2362 /* This is a relocation relative to the absolute symbol. */
2363 n.r_symndx = -1;
2364 else
2366 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
2367 /* Take notice if the symbol reloc points to a symbol
2368 we don't have in our symbol table. What should we
2369 do for this?? */
2370 if (n.r_symndx > obj_conv_table_size (abfd))
2371 abort ();
2375 #ifdef SWAP_OUT_RELOC_OFFSET
2376 n.r_offset = q->addend;
2377 #endif
2379 #ifdef SELECT_RELOC
2380 /* Work out reloc type from what is required */
2381 SELECT_RELOC (n, q->howto);
2382 #else
2383 n.r_type = q->howto->type;
2384 #endif
2385 coff_swap_reloc_out (abfd, &n, &dst);
2386 if (bfd_write ((PTR) & dst, 1, bfd_coff_relsz (abfd), abfd)
2387 != bfd_coff_relsz (abfd))
2388 return false;
2391 #ifdef TARG_AUX
2392 if (p != NULL)
2393 free (p);
2394 #endif
2397 return true;
2400 /* Set flags and magic number of a coff file from architecture and machine
2401 type. Result is true if we can represent the arch&type, false if not. */
2403 static boolean
2404 coff_set_flags (abfd, magicp, flagsp)
2405 bfd * abfd;
2406 unsigned int *magicp ATTRIBUTE_UNUSED;
2407 unsigned short *flagsp ATTRIBUTE_UNUSED;
2409 switch (bfd_get_arch (abfd))
2411 #ifdef Z8KMAGIC
2412 case bfd_arch_z8k:
2413 *magicp = Z8KMAGIC;
2414 switch (bfd_get_mach (abfd))
2416 case bfd_mach_z8001:
2417 *flagsp = F_Z8001;
2418 break;
2419 case bfd_mach_z8002:
2420 *flagsp = F_Z8002;
2421 break;
2422 default:
2423 return false;
2425 return true;
2426 #endif
2427 #ifdef I960ROMAGIC
2429 case bfd_arch_i960:
2432 unsigned flags;
2433 *magicp = I960ROMAGIC;
2435 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2436 I960RWMAGIC); FIXME???
2438 switch (bfd_get_mach (abfd))
2440 case bfd_mach_i960_core:
2441 flags = F_I960CORE;
2442 break;
2443 case bfd_mach_i960_kb_sb:
2444 flags = F_I960KB;
2445 break;
2446 case bfd_mach_i960_mc:
2447 flags = F_I960MC;
2448 break;
2449 case bfd_mach_i960_xa:
2450 flags = F_I960XA;
2451 break;
2452 case bfd_mach_i960_ca:
2453 flags = F_I960CA;
2454 break;
2455 case bfd_mach_i960_ka_sa:
2456 flags = F_I960KA;
2457 break;
2458 case bfd_mach_i960_jx:
2459 flags = F_I960JX;
2460 break;
2461 case bfd_mach_i960_hx:
2462 flags = F_I960HX;
2463 break;
2464 default:
2465 return false;
2467 *flagsp = flags;
2468 return true;
2470 break;
2471 #endif
2473 #ifdef TIC30MAGIC
2474 case bfd_arch_tic30:
2475 *magicp = TIC30MAGIC;
2476 return true;
2477 #endif
2479 #ifdef TICOFF_DEFAULT_MAGIC
2480 case TICOFF_TARGET_ARCH:
2481 /* if there's no indication of which version we want, use the default */
2482 if (!abfd->xvec )
2483 *magicp = TICOFF_DEFAULT_MAGIC;
2484 else
2486 /* we may want to output in a different COFF version */
2487 switch (abfd->xvec->name[4])
2489 case '0':
2490 *magicp = TICOFF0MAGIC;
2491 break;
2492 case '1':
2493 *magicp = TICOFF1MAGIC;
2494 break;
2495 case '2':
2496 *magicp = TICOFF2MAGIC;
2497 break;
2498 default:
2499 return false;
2502 return true;
2503 #endif
2505 #ifdef TIC80_ARCH_MAGIC
2506 case bfd_arch_tic80:
2507 *magicp = TIC80_ARCH_MAGIC;
2508 return true;
2509 #endif
2510 #ifdef ARMMAGIC
2511 case bfd_arch_arm:
2512 #ifdef ARM_WINCE
2513 * magicp = ARMPEMAGIC;
2514 #else
2515 * magicp = ARMMAGIC;
2516 #endif
2517 * flagsp = 0;
2518 if (APCS_SET (abfd))
2520 if (APCS_26_FLAG (abfd))
2521 * flagsp |= F_APCS26;
2523 if (APCS_FLOAT_FLAG (abfd))
2524 * flagsp |= F_APCS_FLOAT;
2526 if (PIC_FLAG (abfd))
2527 * flagsp |= F_PIC;
2529 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2530 * flagsp |= F_INTERWORK;
2531 switch (bfd_get_mach (abfd))
2533 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2534 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2535 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2536 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2537 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2538 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2539 case bfd_mach_arm_5: * flagsp |= F_ARM_5; break;
2540 case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break; /* XXX - we do not have an F_ARM_5T */
2542 return true;
2543 #endif
2544 #ifdef PPCMAGIC
2545 case bfd_arch_powerpc:
2546 *magicp = PPCMAGIC;
2547 return true;
2548 break;
2549 #endif
2550 #ifdef I386MAGIC
2551 case bfd_arch_i386:
2552 *magicp = I386MAGIC;
2553 #ifdef LYNXOS
2554 /* Just overwrite the usual value if we're doing Lynx. */
2555 *magicp = LYNXCOFFMAGIC;
2556 #endif
2557 return true;
2558 break;
2559 #endif
2560 #ifdef I860MAGIC
2561 case bfd_arch_i860:
2562 *magicp = I860MAGIC;
2563 return true;
2564 break;
2565 #endif
2566 #ifdef IA64MAGIC
2567 case bfd_arch_ia64:
2568 *magicp = IA64MAGIC;
2569 return true;
2570 break;
2571 #endif
2572 #ifdef MC68MAGIC
2573 case bfd_arch_m68k:
2574 #ifdef APOLLOM68KMAGIC
2575 *magicp = APOLLO_COFF_VERSION_NUMBER;
2576 #else
2577 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2578 #ifdef NAMES_HAVE_UNDERSCORE
2579 *magicp = MC68KBCSMAGIC;
2580 #else
2581 *magicp = MC68MAGIC;
2582 #endif
2583 #endif
2584 #ifdef LYNXOS
2585 /* Just overwrite the usual value if we're doing Lynx. */
2586 *magicp = LYNXCOFFMAGIC;
2587 #endif
2588 return true;
2589 break;
2590 #endif
2592 #ifdef MC88MAGIC
2593 case bfd_arch_m88k:
2594 *magicp = MC88OMAGIC;
2595 return true;
2596 break;
2597 #endif
2598 #ifdef H8300MAGIC
2599 case bfd_arch_h8300:
2600 switch (bfd_get_mach (abfd))
2602 case bfd_mach_h8300:
2603 *magicp = H8300MAGIC;
2604 return true;
2605 case bfd_mach_h8300h:
2606 *magicp = H8300HMAGIC;
2607 return true;
2608 case bfd_mach_h8300s:
2609 *magicp = H8300SMAGIC;
2610 return true;
2612 break;
2613 #endif
2615 #ifdef SH_ARCH_MAGIC_BIG
2616 case bfd_arch_sh:
2617 #ifdef COFF_IMAGE_WITH_PE
2618 *magicp = SH_ARCH_MAGIC_WINCE;
2619 #else
2620 if (bfd_big_endian (abfd))
2621 *magicp = SH_ARCH_MAGIC_BIG;
2622 else
2623 *magicp = SH_ARCH_MAGIC_LITTLE;
2624 #endif
2625 return true;
2626 break;
2627 #endif
2629 #ifdef MIPS_ARCH_MAGIC_WINCE
2630 case bfd_arch_mips:
2631 *magicp = MIPS_ARCH_MAGIC_WINCE;
2632 return true;
2633 break;
2634 #endif
2636 #ifdef SPARCMAGIC
2637 case bfd_arch_sparc:
2638 *magicp = SPARCMAGIC;
2639 #ifdef LYNXOS
2640 /* Just overwrite the usual value if we're doing Lynx. */
2641 *magicp = LYNXCOFFMAGIC;
2642 #endif
2643 return true;
2644 break;
2645 #endif
2647 #ifdef H8500MAGIC
2648 case bfd_arch_h8500:
2649 *magicp = H8500MAGIC;
2650 return true;
2651 break;
2652 #endif
2653 #ifdef A29K_MAGIC_BIG
2654 case bfd_arch_a29k:
2655 if (bfd_big_endian (abfd))
2656 *magicp = A29K_MAGIC_BIG;
2657 else
2658 *magicp = A29K_MAGIC_LITTLE;
2659 return true;
2660 break;
2661 #endif
2663 #ifdef WE32KMAGIC
2664 case bfd_arch_we32k:
2665 *magicp = WE32KMAGIC;
2666 return true;
2667 break;
2668 #endif
2670 #ifdef U802TOCMAGIC
2671 case bfd_arch_rs6000:
2672 #ifndef PPCMAGIC
2673 case bfd_arch_powerpc:
2674 #endif
2675 *magicp = U802TOCMAGIC;
2676 return true;
2677 break;
2678 #endif
2680 #ifdef MCOREMAGIC
2681 case bfd_arch_mcore:
2682 * magicp = MCOREMAGIC;
2683 return true;
2684 #endif
2686 default: /* Unknown architecture */
2687 /* return false; -- fall through to "return false" below, to avoid
2688 "statement never reached" errors on the one below. */
2689 break;
2692 return false;
2696 static boolean
2697 coff_set_arch_mach (abfd, arch, machine)
2698 bfd * abfd;
2699 enum bfd_architecture arch;
2700 unsigned long machine;
2702 unsigned dummy1;
2703 unsigned short dummy2;
2705 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2706 return false;
2708 if (arch != bfd_arch_unknown &&
2709 coff_set_flags (abfd, &dummy1, &dummy2) != true)
2710 return false; /* We can't represent this type */
2712 return true; /* We're easy ... */
2715 #ifdef COFF_IMAGE_WITH_PE
2717 /* This is used to sort sections by VMA, as required by PE image
2718 files. */
2720 static int sort_by_secaddr PARAMS ((const PTR, const PTR));
2722 static int
2723 sort_by_secaddr (arg1, arg2)
2724 const PTR arg1;
2725 const PTR arg2;
2727 const asection *a = *(const asection **) arg1;
2728 const asection *b = *(const asection **) arg2;
2730 if (a->vma < b->vma)
2731 return -1;
2732 else if (a->vma > b->vma)
2733 return 1;
2734 else
2735 return 0;
2738 #endif /* COFF_IMAGE_WITH_PE */
2740 /* Calculate the file position for each section. */
2742 #ifndef I960
2743 #define ALIGN_SECTIONS_IN_FILE
2744 #endif
2745 #if defined(TIC80COFF) || defined(TICOFF)
2746 #undef ALIGN_SECTIONS_IN_FILE
2747 #endif
2749 static boolean
2750 coff_compute_section_file_positions (abfd)
2751 bfd * abfd;
2753 asection *current;
2754 asection *previous = (asection *) NULL;
2755 file_ptr sofar = bfd_coff_filhsz (abfd);
2756 boolean align_adjust;
2757 #ifdef ALIGN_SECTIONS_IN_FILE
2758 file_ptr old_sofar;
2759 #endif
2761 #ifdef RS6000COFF_C
2762 /* On XCOFF, if we have symbols, set up the .debug section. */
2763 if (bfd_get_symcount (abfd) > 0)
2765 bfd_size_type sz;
2766 bfd_size_type i, symcount;
2767 asymbol **symp;
2769 sz = 0;
2770 symcount = bfd_get_symcount (abfd);
2771 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
2773 coff_symbol_type *cf;
2775 cf = coff_symbol_from (abfd, *symp);
2776 if (cf != NULL
2777 && cf->native != NULL
2778 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
2780 size_t len;
2782 len = strlen (bfd_asymbol_name (*symp));
2783 if (len > SYMNMLEN)
2784 sz += len + 3;
2787 if (sz > 0)
2789 asection *dsec;
2791 dsec = bfd_make_section_old_way (abfd, ".debug");
2792 if (dsec == NULL)
2793 abort ();
2794 dsec->_raw_size = sz;
2795 dsec->flags |= SEC_HAS_CONTENTS;
2798 #endif
2800 #ifdef COFF_IMAGE_WITH_PE
2801 int page_size;
2802 if (coff_data (abfd)->link_info)
2804 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
2806 else
2807 page_size = PE_DEF_FILE_ALIGNMENT;
2808 #else
2809 #ifdef COFF_PAGE_SIZE
2810 int page_size = COFF_PAGE_SIZE;
2811 #endif
2812 #endif
2814 if (bfd_get_start_address (abfd))
2816 /* A start address may have been added to the original file. In this
2817 case it will need an optional header to record it. */
2818 abfd->flags |= EXEC_P;
2821 if (abfd->flags & EXEC_P)
2822 sofar += bfd_coff_aoutsz (abfd);
2823 #ifdef RS6000COFF_C
2824 else if (xcoff_data (abfd)->full_aouthdr)
2825 sofar += bfd_coff_aoutsz (abfd);
2826 else
2827 sofar += SMALL_AOUTSZ;
2828 #endif
2830 sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
2832 #ifdef RS6000COFF_C
2833 /* XCOFF handles overflows in the reloc and line number count fields
2834 by allocating a new section header to hold the correct counts. */
2835 for (current = abfd->sections; current != NULL; current = current->next)
2836 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2837 sofar += bfd_coff_scnhsz (abfd);
2838 #endif
2840 #ifdef COFF_IMAGE_WITH_PE
2842 /* PE requires the sections to be in memory order when listed in
2843 the section headers. It also does not like empty loadable
2844 sections. The sections apparently do not have to be in the
2845 right order in the image file itself, but we do need to get the
2846 target_index values right. */
2848 int count;
2849 asection **section_list;
2850 int i;
2851 int target_index;
2853 count = 0;
2854 for (current = abfd->sections; current != NULL; current = current->next)
2855 ++count;
2857 /* We allocate an extra cell to simplify the final loop. */
2858 section_list = bfd_malloc (sizeof (struct asection *) * (count + 1));
2859 if (section_list == NULL)
2860 return false;
2862 i = 0;
2863 for (current = abfd->sections; current != NULL; current = current->next)
2865 section_list[i] = current;
2866 ++i;
2868 section_list[i] = NULL;
2870 qsort (section_list, count, sizeof (asection *), sort_by_secaddr);
2872 /* Rethread the linked list into sorted order; at the same time,
2873 assign target_index values. */
2874 target_index = 1;
2875 abfd->sections = section_list[0];
2876 for (i = 0; i < count; i++)
2878 current = section_list[i];
2879 current->next = section_list[i + 1];
2881 /* Later, if the section has zero size, we'll be throwing it
2882 away, so we don't want to number it now. Note that having
2883 a zero size and having real contents are different
2884 concepts: .bss has no contents, but (usually) non-zero
2885 size. */
2886 if (current->_raw_size == 0)
2888 /* Discard. However, it still might have (valid) symbols
2889 in it, so arbitrarily set it to section 1 (indexing is
2890 1-based here; usually .text). __end__ and other
2891 contents of .endsection really have this happen.
2892 FIXME: This seems somewhat dubious. */
2893 current->target_index = 1;
2895 else
2896 current->target_index = target_index++;
2899 free (section_list);
2901 #else /* ! COFF_IMAGE_WITH_PE */
2903 /* Set the target_index field. */
2904 int target_index;
2906 target_index = 1;
2907 for (current = abfd->sections; current != NULL; current = current->next)
2908 current->target_index = target_index++;
2910 #endif /* ! COFF_IMAGE_WITH_PE */
2912 align_adjust = false;
2913 for (current = abfd->sections;
2914 current != (asection *) NULL;
2915 current = current->next)
2917 #ifdef COFF_IMAGE_WITH_PE
2918 /* With PE we have to pad each section to be a multiple of its
2919 page size too, and remember both sizes. */
2920 if (coff_section_data (abfd, current) == NULL)
2922 current->used_by_bfd =
2923 (PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata));
2924 if (current->used_by_bfd == NULL)
2925 return false;
2927 if (pei_section_data (abfd, current) == NULL)
2929 coff_section_data (abfd, current)->tdata =
2930 (PTR) bfd_zalloc (abfd, sizeof (struct pei_section_tdata));
2931 if (coff_section_data (abfd, current)->tdata == NULL)
2932 return false;
2934 if (pei_section_data (abfd, current)->virt_size == 0)
2935 pei_section_data (abfd, current)->virt_size = current->_raw_size;
2936 #endif
2938 /* Only deal with sections which have contents. */
2939 if (!(current->flags & SEC_HAS_CONTENTS))
2940 continue;
2942 #ifdef COFF_IMAGE_WITH_PE
2943 /* Make sure we skip empty sections in a PE image. */
2944 if (current->_raw_size == 0)
2945 continue;
2946 #endif
2948 /* Align the sections in the file to the same boundary on
2949 which they are aligned in virtual memory. I960 doesn't
2950 do this (FIXME) so we can stay in sync with Intel. 960
2951 doesn't yet page from files... */
2952 #ifdef ALIGN_SECTIONS_IN_FILE
2953 if ((abfd->flags & EXEC_P) != 0)
2955 /* make sure this section is aligned on the right boundary - by
2956 padding the previous section up if necessary */
2958 old_sofar = sofar;
2959 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
2960 if (previous != (asection *) NULL)
2962 previous->_raw_size += sofar - old_sofar;
2966 #endif
2968 /* In demand paged files the low order bits of the file offset
2969 must match the low order bits of the virtual address. */
2970 #ifdef COFF_PAGE_SIZE
2971 if ((abfd->flags & D_PAGED) != 0
2972 && (current->flags & SEC_ALLOC) != 0)
2973 sofar += (current->vma - sofar) % page_size;
2974 #endif
2975 current->filepos = sofar;
2977 #ifdef COFF_IMAGE_WITH_PE
2978 /* Set the padded size. */
2979 current->_raw_size = (current->_raw_size + page_size -1) & -page_size;
2980 #endif
2982 sofar += current->_raw_size;
2984 #ifdef ALIGN_SECTIONS_IN_FILE
2985 /* make sure that this section is of the right size too */
2986 if ((abfd->flags & EXEC_P) == 0)
2988 bfd_size_type old_size;
2990 old_size = current->_raw_size;
2991 current->_raw_size = BFD_ALIGN (current->_raw_size,
2992 1 << current->alignment_power);
2993 align_adjust = current->_raw_size != old_size;
2994 sofar += current->_raw_size - old_size;
2996 else
2998 old_sofar = sofar;
2999 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3000 align_adjust = sofar != old_sofar;
3001 current->_raw_size += sofar - old_sofar;
3003 #endif
3005 #ifdef COFF_IMAGE_WITH_PE
3006 /* For PE we need to make sure we pad out to the aligned
3007 _raw_size, in case the caller only writes out data to the
3008 unaligned _raw_size. */
3009 if (pei_section_data (abfd, current)->virt_size < current->_raw_size)
3010 align_adjust = true;
3011 #endif
3013 #ifdef _LIB
3014 /* Force .lib sections to start at zero. The vma is then
3015 incremented in coff_set_section_contents. This is right for
3016 SVR3.2. */
3017 if (strcmp (current->name, _LIB) == 0)
3018 bfd_set_section_vma (abfd, current, 0);
3019 #endif
3021 previous = current;
3024 /* It is now safe to write to the output file. If we needed an
3025 alignment adjustment for the last section, then make sure that
3026 there is a byte at offset sofar. If there are no symbols and no
3027 relocs, then nothing follows the last section. If we don't force
3028 the last byte out, then the file may appear to be truncated. */
3029 if (align_adjust)
3031 bfd_byte b;
3033 b = 0;
3034 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
3035 || bfd_write (&b, 1, 1, abfd) != 1)
3036 return false;
3039 /* Make sure the relocations are aligned. We don't need to make
3040 sure that this byte exists, because it will only matter if there
3041 really are relocs. */
3042 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
3044 obj_relocbase (abfd) = sofar;
3045 abfd->output_has_begun = true;
3047 return true;
3050 #if 0
3052 /* This can never work, because it is called too late--after the
3053 section positions have been set. I can't figure out what it is
3054 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3056 /* If .file, .text, .data, .bss symbols are missing, add them. */
3057 /* @@ Should we only be adding missing symbols, or overriding the aux
3058 values for existing section symbols? */
3059 static boolean
3060 coff_add_missing_symbols (abfd)
3061 bfd *abfd;
3063 unsigned int nsyms = bfd_get_symcount (abfd);
3064 asymbol **sympp = abfd->outsymbols;
3065 asymbol **sympp2;
3066 unsigned int i;
3067 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
3069 for (i = 0; i < nsyms; i++)
3071 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
3072 CONST char *name;
3073 if (csym)
3075 /* only do this if there is a coff representation of the input
3076 symbol */
3077 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
3079 need_file = 0;
3080 continue;
3082 name = csym->symbol.name;
3083 if (!name)
3084 continue;
3085 if (!strcmp (name, _TEXT))
3086 need_text = 0;
3087 #ifdef APOLLO_M68
3088 else if (!strcmp (name, ".wtext"))
3089 need_text = 0;
3090 #endif
3091 else if (!strcmp (name, _DATA))
3092 need_data = 0;
3093 else if (!strcmp (name, _BSS))
3094 need_bss = 0;
3097 /* Now i == bfd_get_symcount (abfd). */
3098 /* @@ For now, don't deal with .file symbol. */
3099 need_file = 0;
3101 if (!need_text && !need_data && !need_bss && !need_file)
3102 return true;
3103 nsyms += need_text + need_data + need_bss + need_file;
3104 sympp2 = (asymbol **) bfd_alloc (abfd, nsyms * sizeof (asymbol *));
3105 if (!sympp2)
3106 return false;
3107 memcpy (sympp2, sympp, i * sizeof (asymbol *));
3108 if (need_file)
3110 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3111 abort ();
3113 if (need_text)
3114 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
3115 if (need_data)
3116 sympp2[i++] = coff_section_symbol (abfd, _DATA);
3117 if (need_bss)
3118 sympp2[i++] = coff_section_symbol (abfd, _BSS);
3119 BFD_ASSERT (i == nsyms);
3120 bfd_set_symtab (abfd, sympp2, nsyms);
3121 return true;
3124 #endif /* 0 */
3126 /* SUPPRESS 558 */
3127 /* SUPPRESS 529 */
3128 static boolean
3129 coff_write_object_contents (abfd)
3130 bfd * abfd;
3132 asection *current;
3133 boolean hasrelocs = false;
3134 boolean haslinno = false;
3135 boolean hasdebug = false;
3136 file_ptr scn_base;
3137 file_ptr reloc_base;
3138 file_ptr lineno_base;
3139 file_ptr sym_base;
3140 unsigned long reloc_size = 0;
3141 unsigned long lnno_size = 0;
3142 boolean long_section_names;
3143 asection *text_sec = NULL;
3144 asection *data_sec = NULL;
3145 asection *bss_sec = NULL;
3146 struct internal_filehdr internal_f;
3147 struct internal_aouthdr internal_a;
3148 #ifdef COFF_LONG_SECTION_NAMES
3149 size_t string_size = STRING_SIZE_SIZE;
3150 #endif
3152 bfd_set_error (bfd_error_system_call);
3154 /* Make a pass through the symbol table to count line number entries and
3155 put them into the correct asections */
3157 lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd);
3159 if (abfd->output_has_begun == false)
3161 if (! coff_compute_section_file_positions (abfd))
3162 return false;
3165 reloc_base = obj_relocbase (abfd);
3167 /* Work out the size of the reloc and linno areas */
3169 for (current = abfd->sections; current != NULL; current =
3170 current->next)
3171 reloc_size += current->reloc_count * bfd_coff_relsz (abfd);
3173 lineno_base = reloc_base + reloc_size;
3174 sym_base = lineno_base + lnno_size;
3176 /* Indicate in each section->line_filepos its actual file address */
3177 for (current = abfd->sections; current != NULL; current =
3178 current->next)
3180 if (current->lineno_count)
3182 current->line_filepos = lineno_base;
3183 current->moving_line_filepos = lineno_base;
3184 lineno_base += current->lineno_count * bfd_coff_linesz (abfd);
3186 else
3188 current->line_filepos = 0;
3190 if (current->reloc_count)
3192 current->rel_filepos = reloc_base;
3193 reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
3195 else
3197 current->rel_filepos = 0;
3201 /* Write section headers to the file. */
3202 internal_f.f_nscns = 0;
3204 if ((abfd->flags & EXEC_P) != 0)
3205 scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
3206 else
3208 scn_base = bfd_coff_filhsz (abfd);
3209 #ifdef RS6000COFF_C
3210 if (xcoff_data (abfd)->full_aouthdr)
3211 scn_base += bfd_coff_aoutsz (abfd);
3212 else
3213 scn_base += SMALL_AOUTSZ;
3214 #endif
3217 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
3218 return false;
3220 long_section_names = false;
3221 for (current = abfd->sections;
3222 current != NULL;
3223 current = current->next)
3225 struct internal_scnhdr section;
3226 boolean is_reloc_section = false;
3228 #ifdef COFF_IMAGE_WITH_PE
3229 if (strcmp (current->name, ".reloc") == 0)
3231 is_reloc_section = true;
3232 hasrelocs = true;
3233 pe_data (abfd)->has_reloc_section = 1;
3235 #endif
3237 internal_f.f_nscns++;
3239 strncpy (section.s_name, current->name, SCNNMLEN);
3241 #ifdef COFF_LONG_SECTION_NAMES
3242 /* Handle long section names as in PE. This must be compatible
3243 with the code in coff_write_symbols and _bfd_coff_final_link. */
3245 size_t len;
3247 len = strlen (current->name);
3248 if (len > SCNNMLEN)
3250 memset (section.s_name, 0, SCNNMLEN);
3251 sprintf (section.s_name, "/%lu", (unsigned long) string_size);
3252 string_size += len + 1;
3253 long_section_names = true;
3256 #endif
3258 #ifdef _LIB
3259 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3260 Ian Taylor <ian@cygnus.com>. */
3261 if (strcmp (current->name, _LIB) == 0)
3262 section.s_vaddr = 0;
3263 else
3264 #endif
3265 section.s_vaddr = current->vma;
3266 section.s_paddr = current->lma;
3267 section.s_size = current->_raw_size;
3268 #ifdef coff_get_section_load_page
3269 section.s_page = coff_get_section_load_page (current);
3270 #endif
3272 #ifdef COFF_WITH_PE
3273 section.s_paddr = 0;
3274 #endif
3275 #ifdef COFF_IMAGE_WITH_PE
3276 /* Reminder: s_paddr holds the virtual size of the section. */
3277 if (coff_section_data (abfd, current) != NULL
3278 && pei_section_data (abfd, current) != NULL)
3279 section.s_paddr = pei_section_data (abfd, current)->virt_size;
3280 else
3281 section.s_paddr = 0;
3282 #endif
3285 If this section has no size or is unloadable then the scnptr
3286 will be 0 too
3288 if (current->_raw_size == 0 ||
3289 (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
3291 section.s_scnptr = 0;
3293 else
3295 section.s_scnptr = current->filepos;
3297 section.s_relptr = current->rel_filepos;
3298 section.s_lnnoptr = current->line_filepos;
3299 section.s_nreloc = current->reloc_count;
3300 section.s_nlnno = current->lineno_count;
3301 #ifndef COFF_IMAGE_WITH_PE
3302 /* In PEI, relocs come in the .reloc section. */
3303 if (current->reloc_count != 0)
3304 hasrelocs = true;
3305 #endif
3306 if (current->lineno_count != 0)
3307 haslinno = true;
3308 if ((current->flags & SEC_DEBUGGING) != 0
3309 && ! is_reloc_section)
3310 hasdebug = true;
3312 #ifdef RS6000COFF_C
3313 /* Indicate the use of an XCOFF overflow section header. */
3314 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3316 section.s_nreloc = 0xffff;
3317 section.s_nlnno = 0xffff;
3319 #endif
3321 section.s_flags = sec_to_styp_flags (current->name, current->flags);
3323 if (!strcmp (current->name, _TEXT))
3325 text_sec = current;
3327 else if (!strcmp (current->name, _DATA))
3329 data_sec = current;
3331 else if (!strcmp (current->name, _BSS))
3333 bss_sec = current;
3336 #ifdef I960
3337 section.s_align = (current->alignment_power
3338 ? 1 << current->alignment_power
3339 : 0);
3340 #endif
3341 #ifdef TIC80COFF
3342 /* TI COFF puts the alignment power in bits 8-11 of the flags */
3343 section.s_flags |= (current->alignment_power & 0xF) << 8;
3344 #endif
3345 #ifdef COFF_ENCODE_ALIGNMENT
3346 COFF_ENCODE_ALIGNMENT(section, current->alignment_power);
3347 #endif
3349 #ifdef COFF_IMAGE_WITH_PE
3350 /* Suppress output of the sections if they are null. ld
3351 includes the bss and data sections even if there is no size
3352 assigned to them. NT loader doesn't like it if these section
3353 headers are included if the sections themselves are not
3354 needed. See also coff_compute_section_file_positions. */
3355 if (section.s_size == 0)
3356 internal_f.f_nscns--;
3357 else
3358 #endif
3360 SCNHDR buff;
3361 if (coff_swap_scnhdr_out (abfd, &section, &buff) == 0
3362 || bfd_write ((PTR) (&buff), 1, bfd_coff_scnhsz (abfd), abfd)
3363 != bfd_coff_scnhsz (abfd))
3364 return false;
3367 #ifdef COFF_WITH_PE
3368 /* PE stores COMDAT section information in the symbol table. If
3369 this section is supposed to have some COMDAT info, track down
3370 the symbol in the symbol table and modify it. */
3371 if ((current->flags & SEC_LINK_ONCE) != 0)
3373 unsigned int i, count;
3374 asymbol **psym;
3375 coff_symbol_type *csym = NULL;
3376 asymbol **psymsec;
3378 psymsec = NULL;
3379 count = bfd_get_symcount (abfd);
3380 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
3382 if ((*psym)->section != current)
3383 continue;
3385 /* Remember the location of the first symbol in this
3386 section. */
3387 if (psymsec == NULL)
3388 psymsec = psym;
3390 /* See if this is the section symbol. */
3391 if (strcmp ((*psym)->name, current->name) == 0)
3393 csym = coff_symbol_from (abfd, *psym);
3394 if (csym == NULL
3395 || csym->native == NULL
3396 || csym->native->u.syment.n_numaux < 1
3397 || csym->native->u.syment.n_sclass != C_STAT
3398 || csym->native->u.syment.n_type != T_NULL)
3399 continue;
3401 /* Here *PSYM is the section symbol for CURRENT. */
3403 break;
3407 /* Did we find it?
3408 Note that we might not if we're converting the file from
3409 some other object file format. */
3410 if (i < count)
3412 combined_entry_type *aux;
3414 /* We don't touch the x_checksum field. The
3415 x_associated field is not currently supported. */
3417 aux = csym->native + 1;
3418 switch (current->flags & SEC_LINK_DUPLICATES)
3420 case SEC_LINK_DUPLICATES_DISCARD:
3421 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
3422 break;
3424 case SEC_LINK_DUPLICATES_ONE_ONLY:
3425 aux->u.auxent.x_scn.x_comdat =
3426 IMAGE_COMDAT_SELECT_NODUPLICATES;
3427 break;
3429 case SEC_LINK_DUPLICATES_SAME_SIZE:
3430 aux->u.auxent.x_scn.x_comdat =
3431 IMAGE_COMDAT_SELECT_SAME_SIZE;
3432 break;
3434 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
3435 aux->u.auxent.x_scn.x_comdat =
3436 IMAGE_COMDAT_SELECT_EXACT_MATCH;
3437 break;
3440 /* The COMDAT symbol must be the first symbol from this
3441 section in the symbol table. In order to make this
3442 work, we move the COMDAT symbol before the first
3443 symbol we found in the search above. It's OK to
3444 rearrange the symbol table at this point, because
3445 coff_renumber_symbols is going to rearrange it
3446 further and fix up all the aux entries. */
3447 if (psym != psymsec)
3449 asymbol *hold;
3450 asymbol **pcopy;
3452 hold = *psym;
3453 for (pcopy = psym; pcopy > psymsec; pcopy--)
3454 pcopy[0] = pcopy[-1];
3455 *psymsec = hold;
3459 #endif /* COFF_WITH_PE */
3462 #ifdef RS6000COFF_C
3463 /* XCOFF handles overflows in the reloc and line number count fields
3464 by creating a new section header to hold the correct values. */
3465 for (current = abfd->sections; current != NULL; current = current->next)
3467 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3469 struct internal_scnhdr scnhdr;
3470 SCNHDR buff;
3472 internal_f.f_nscns++;
3473 strncpy (&(scnhdr.s_name[0]), current->name, 8);
3474 scnhdr.s_paddr = current->reloc_count;
3475 scnhdr.s_vaddr = current->lineno_count;
3476 scnhdr.s_size = 0;
3477 scnhdr.s_scnptr = 0;
3478 scnhdr.s_relptr = current->rel_filepos;
3479 scnhdr.s_lnnoptr = current->line_filepos;
3480 scnhdr.s_nreloc = current->target_index;
3481 scnhdr.s_nlnno = current->target_index;
3482 scnhdr.s_flags = STYP_OVRFLO;
3483 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
3484 || bfd_write ((PTR) &buff, 1, bfd_coff_scnhsz (abfd), abfd)
3485 != bfd_coff_scnhsz (abfd))
3486 return false;
3489 #endif
3491 /* OK, now set up the filehdr... */
3493 /* Don't include the internal abs section in the section count */
3496 We will NOT put a fucking timestamp in the header here. Every time you
3497 put it back, I will come in and take it out again. I'm sorry. This
3498 field does not belong here. We fill it with a 0 so it compares the
3499 same but is not a reasonable time. -- gnu@cygnus.com
3501 internal_f.f_timdat = 0;
3503 internal_f.f_flags = 0;
3505 if (abfd->flags & EXEC_P)
3506 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3507 else
3509 internal_f.f_opthdr = 0;
3510 #ifdef RS6000COFF_C
3511 if (xcoff_data (abfd)->full_aouthdr)
3512 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3513 else
3514 internal_f.f_opthdr = SMALL_AOUTSZ;
3515 #endif
3518 if (!hasrelocs)
3519 internal_f.f_flags |= F_RELFLG;
3520 if (!haslinno)
3521 internal_f.f_flags |= F_LNNO;
3522 if (abfd->flags & EXEC_P)
3523 internal_f.f_flags |= F_EXEC;
3524 #ifdef COFF_IMAGE_WITH_PE
3525 if (! hasdebug)
3526 internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED;
3527 #endif
3529 #ifndef COFF_WITH_PE
3530 if (bfd_little_endian (abfd))
3531 internal_f.f_flags |= F_AR32WR;
3532 else
3533 internal_f.f_flags |= F_AR32W;
3534 #endif
3536 #ifdef TI_TARGET_ID
3537 /* target id is used in TI COFF v1 and later; COFF0 won't use this field,
3538 but it doesn't hurt to set it internally */
3539 internal_f.f_target_id = TI_TARGET_ID;
3540 #endif
3541 #ifdef TIC80_TARGET_ID
3542 internal_f.f_target_id = TIC80_TARGET_ID;
3543 #endif
3546 FIXME, should do something about the other byte orders and
3547 architectures.
3550 #ifdef RS6000COFF_C
3551 if ((abfd->flags & DYNAMIC) != 0)
3552 internal_f.f_flags |= F_SHROBJ;
3553 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
3554 internal_f.f_flags |= F_DYNLOAD;
3555 #endif
3557 memset (&internal_a, 0, sizeof internal_a);
3559 /* Set up architecture-dependent stuff */
3562 unsigned int magic = 0;
3563 unsigned short flags = 0;
3564 coff_set_flags (abfd, &magic, &flags);
3565 internal_f.f_magic = magic;
3566 internal_f.f_flags |= flags;
3567 /* ...and the "opt"hdr... */
3569 #ifdef A29K
3570 #ifdef ULTRA3 /* NYU's machine */
3571 /* FIXME: This is a bogus check. I really want to see if there
3572 * is a .shbss or a .shdata section, if so then set the magic
3573 * number to indicate a shared data executable.
3575 if (internal_f.f_nscns >= 7)
3576 internal_a.magic = SHMAGIC; /* Shared magic */
3577 else
3578 #endif /* ULTRA3 */
3579 internal_a.magic = NMAGIC; /* Assume separate i/d */
3580 #define __A_MAGIC_SET__
3581 #endif /* A29K */
3582 #ifdef TICOFF_AOUT_MAGIC
3583 internal_a.magic = TICOFF_AOUT_MAGIC;
3584 #define __A_MAGIC_SET__
3585 #endif
3586 #ifdef TIC80COFF
3587 internal_a.magic = TIC80_ARCH_MAGIC;
3588 #define __A_MAGIC_SET__
3589 #endif /* TIC80 */
3590 #ifdef I860
3591 /* FIXME: What are the a.out magic numbers for the i860? */
3592 internal_a.magic = 0;
3593 #define __A_MAGIC_SET__
3594 #endif /* I860 */
3595 #ifdef I960
3596 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
3597 #define __A_MAGIC_SET__
3598 #endif /* I960 */
3599 #if M88
3600 #define __A_MAGIC_SET__
3601 internal_a.magic = PAGEMAGICBCS;
3602 #endif /* M88 */
3604 #if APOLLO_M68
3605 #define __A_MAGIC_SET__
3606 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
3607 #endif
3609 #if defined(M68) || defined(WE32K) || defined(M68K)
3610 #define __A_MAGIC_SET__
3611 #if defined(LYNXOS)
3612 internal_a.magic = LYNXCOFFMAGIC;
3613 #else
3614 #if defined(TARG_AUX)
3615 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
3616 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
3617 PAGEMAGICEXECSWAPPED);
3618 #else
3619 #if defined (PAGEMAGICPEXECPAGED)
3620 internal_a.magic = PAGEMAGICPEXECPAGED;
3621 #endif
3622 #endif /* TARG_AUX */
3623 #endif /* LYNXOS */
3624 #endif /* M68 || WE32K || M68K */
3626 #if defined(ARM)
3627 #define __A_MAGIC_SET__
3628 internal_a.magic = ZMAGIC;
3629 #endif
3631 #if defined(PPC_PE)
3632 #define __A_MAGIC_SET__
3633 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3634 #endif
3636 #if defined MCORE_PE
3637 #define __A_MAGIC_SET__
3638 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3639 #endif
3641 #if defined(I386)
3642 #define __A_MAGIC_SET__
3643 #if defined(LYNXOS)
3644 internal_a.magic = LYNXCOFFMAGIC;
3645 #else /* LYNXOS */
3646 internal_a.magic = ZMAGIC;
3647 #endif /* LYNXOS */
3648 #endif /* I386 */
3650 #if defined(IA64)
3651 #define __A_MAGIC_SET__
3652 internal_a.magic = ZMAGIC;
3653 #endif /* IA64 */
3655 #if defined(SPARC)
3656 #define __A_MAGIC_SET__
3657 #if defined(LYNXOS)
3658 internal_a.magic = LYNXCOFFMAGIC;
3659 #endif /* LYNXOS */
3660 #endif /* SPARC */
3662 #ifdef RS6000COFF_C
3663 #define __A_MAGIC_SET__
3664 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
3665 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
3666 RS6K_AOUTHDR_OMAGIC;
3667 #endif
3669 #if defined(SH) && defined(COFF_WITH_PE)
3670 #define __A_MAGIC_SET__
3671 internal_a.magic = SH_PE_MAGIC;
3672 #endif
3674 #if defined(MIPS) && defined(COFF_WITH_PE)
3675 #define __A_MAGIC_SET__
3676 internal_a.magic = MIPS_PE_MAGIC;
3677 #endif
3679 #ifndef __A_MAGIC_SET__
3680 #include "Your aouthdr magic number is not being set!"
3681 #else
3682 #undef __A_MAGIC_SET__
3683 #endif
3686 /* FIXME: Does anybody ever set this to another value? */
3687 internal_a.vstamp = 0;
3689 /* Now should write relocs, strings, syms */
3690 obj_sym_filepos (abfd) = sym_base;
3692 if (bfd_get_symcount (abfd) != 0)
3694 int firstundef;
3695 #if 0
3696 if (!coff_add_missing_symbols (abfd))
3697 return false;
3698 #endif
3699 if (!coff_renumber_symbols (abfd, &firstundef))
3700 return false;
3701 coff_mangle_symbols (abfd);
3702 if (! coff_write_symbols (abfd))
3703 return false;
3704 if (! coff_write_linenumbers (abfd))
3705 return false;
3706 if (! coff_write_relocs (abfd, firstundef))
3707 return false;
3709 #ifdef COFF_LONG_SECTION_NAMES
3710 else if (long_section_names)
3712 /* If we have long section names we have to write out the string
3713 table even if there are no symbols. */
3714 if (! coff_write_symbols (abfd))
3715 return false;
3717 #endif
3718 #ifdef COFF_IMAGE_WITH_PE
3719 #ifdef PPC_PE
3720 else if ((abfd->flags & EXEC_P) != 0)
3722 bfd_byte b;
3724 /* PowerPC PE appears to require that all executable files be
3725 rounded up to the page size. */
3726 b = 0;
3727 if (bfd_seek (abfd,
3728 BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
3729 SEEK_SET) != 0
3730 || bfd_write (&b, 1, 1, abfd) != 1)
3731 return false;
3733 #endif
3734 #endif
3736 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
3737 backend linker, and obj_raw_syment_count is not valid until after
3738 coff_write_symbols is called. */
3739 if (obj_raw_syment_count (abfd) != 0)
3741 internal_f.f_symptr = sym_base;
3742 #ifdef RS6000COFF_C
3743 /* AIX appears to require that F_RELFLG not be set if there are
3744 local symbols but no relocations. */
3745 internal_f.f_flags &=~ F_RELFLG;
3746 #endif
3748 else
3750 if (long_section_names)
3751 internal_f.f_symptr = sym_base;
3752 else
3753 internal_f.f_symptr = 0;
3754 internal_f.f_flags |= F_LSYMS;
3757 if (text_sec)
3759 internal_a.tsize = bfd_get_section_size_before_reloc (text_sec);
3760 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
3762 if (data_sec)
3764 internal_a.dsize = bfd_get_section_size_before_reloc (data_sec);
3765 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
3767 if (bss_sec)
3769 internal_a.bsize = bfd_get_section_size_before_reloc (bss_sec);
3770 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
3771 internal_a.data_start = bss_sec->vma;
3774 internal_a.entry = bfd_get_start_address (abfd);
3775 internal_f.f_nsyms = obj_raw_syment_count (abfd);
3777 #ifdef RS6000COFF_C
3778 if (xcoff_data (abfd)->full_aouthdr)
3780 bfd_vma toc;
3781 asection *loader_sec;
3783 internal_a.vstamp = 1;
3785 internal_a.o_snentry = xcoff_data (abfd)->snentry;
3786 if (internal_a.o_snentry == 0)
3787 internal_a.entry = (bfd_vma) -1;
3789 if (text_sec != NULL)
3791 internal_a.o_sntext = text_sec->target_index;
3792 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
3794 else
3796 internal_a.o_sntext = 0;
3797 internal_a.o_algntext = 0;
3799 if (data_sec != NULL)
3801 internal_a.o_sndata = data_sec->target_index;
3802 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
3804 else
3806 internal_a.o_sndata = 0;
3807 internal_a.o_algndata = 0;
3809 loader_sec = bfd_get_section_by_name (abfd, ".loader");
3810 if (loader_sec != NULL)
3811 internal_a.o_snloader = loader_sec->target_index;
3812 else
3813 internal_a.o_snloader = 0;
3814 if (bss_sec != NULL)
3815 internal_a.o_snbss = bss_sec->target_index;
3816 else
3817 internal_a.o_snbss = 0;
3819 toc = xcoff_data (abfd)->toc;
3820 internal_a.o_toc = toc;
3821 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
3823 internal_a.o_modtype = xcoff_data (abfd)->modtype;
3824 if (xcoff_data (abfd)->cputype != -1)
3825 internal_a.o_cputype = xcoff_data (abfd)->cputype;
3826 else
3828 switch (bfd_get_arch (abfd))
3830 case bfd_arch_rs6000:
3831 internal_a.o_cputype = 4;
3832 break;
3833 case bfd_arch_powerpc:
3834 if (bfd_get_mach (abfd) == 0)
3835 internal_a.o_cputype = 3;
3836 else
3837 internal_a.o_cputype = 1;
3838 break;
3839 default:
3840 abort ();
3843 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
3844 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
3846 #endif
3848 /* now write them */
3849 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
3850 return false;
3853 char * buff;
3854 bfd_size_type amount;
3856 buff = bfd_malloc (bfd_coff_filhsz (abfd));
3857 if (buff == NULL)
3858 return false;
3860 coff_swap_filehdr_out (abfd, (PTR) & internal_f, (PTR) buff);
3861 amount = bfd_write ((PTR) buff, 1, bfd_coff_filhsz (abfd), abfd);
3863 free (buff);
3865 if (amount != bfd_coff_filhsz (abfd))
3866 return false;
3869 if (abfd->flags & EXEC_P)
3871 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
3872 include/coff/pe.h sets AOUTSZ == sizeof(PEAOUTHDR)) */
3873 char * buff;
3874 bfd_size_type amount;
3876 buff = bfd_malloc (bfd_coff_aoutsz (abfd));
3877 if (buff == NULL)
3878 return false;
3880 coff_swap_aouthdr_out (abfd, (PTR) & internal_a, (PTR) buff);
3881 amount = bfd_write ((PTR) buff, 1, bfd_coff_aoutsz (abfd), abfd);
3883 free (buff);
3885 if (amount != bfd_coff_aoutsz (abfd))
3886 return false;
3888 #ifdef RS6000COFF_C
3889 else
3891 AOUTHDR buff;
3892 size_t size;
3894 /* XCOFF seems to always write at least a small a.out header. */
3895 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff);
3896 if (xcoff_data (abfd)->full_aouthdr)
3897 size = bfd_coff_aoutsz (abfd);
3898 else
3899 size = SMALL_AOUTSZ;
3900 if (bfd_write ((PTR) &buff, 1, size, abfd) != size)
3901 return false;
3903 #endif
3905 return true;
3908 static boolean
3909 coff_set_section_contents (abfd, section, location, offset, count)
3910 bfd * abfd;
3911 sec_ptr section;
3912 PTR location;
3913 file_ptr offset;
3914 bfd_size_type count;
3916 if (abfd->output_has_begun == false) /* set by bfd.c handler */
3918 if (! coff_compute_section_file_positions (abfd))
3919 return false;
3922 #if defined(_LIB) && !defined(TARG_AUX)
3924 /* The physical address field of a .lib section is used to hold the
3925 number of shared libraries in the section. This code counts the
3926 number of sections being written, and increments the lma field
3927 with the number.
3929 I have found no documentation on the contents of this section.
3930 Experimentation indicates that the section contains zero or more
3931 records, each of which has the following structure:
3933 - a (four byte) word holding the length of this record, in words,
3934 - a word that always seems to be set to "2",
3935 - the path to a shared library, null-terminated and then padded
3936 to a whole word boundary.
3938 bfd_assert calls have been added to alert if an attempt is made
3939 to write a section which doesn't follow these assumptions. The
3940 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
3941 <robertl@arnet.com> (Thanks!).
3943 Gvran Uddeborg <gvran@uddeborg.pp.se> */
3945 if (strcmp (section->name, _LIB) == 0)
3947 bfd_byte *rec, *recend;
3949 rec = (bfd_byte *) location;
3950 recend = rec + count;
3951 while (rec < recend)
3953 ++section->lma;
3954 rec += bfd_get_32 (abfd, rec) * 4;
3957 BFD_ASSERT (rec == recend);
3960 #endif
3962 /* Don't write out bss sections - one way to do this is to
3963 see if the filepos has not been set. */
3964 if (section->filepos == 0)
3965 return true;
3967 if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0)
3968 return false;
3970 if (count != 0)
3972 return (bfd_write (location, 1, count, abfd) == count) ? true : false;
3974 return true;
3976 #if 0
3977 static boolean
3978 coff_close_and_cleanup (abfd)
3979 bfd *abfd;
3981 if (!bfd_read_p (abfd))
3982 switch (abfd->format)
3984 case bfd_archive:
3985 if (!_bfd_write_archive_contents (abfd))
3986 return false;
3987 break;
3988 case bfd_object:
3989 if (!coff_write_object_contents (abfd))
3990 return false;
3991 break;
3992 default:
3993 bfd_set_error (bfd_error_invalid_operation);
3994 return false;
3997 /* We depend on bfd_close to free all the memory on the objalloc. */
3998 return true;
4001 #endif
4003 static PTR
4004 buy_and_read (abfd, where, seek_direction, size)
4005 bfd *abfd;
4006 file_ptr where;
4007 int seek_direction;
4008 size_t size;
4010 PTR area = (PTR) bfd_alloc (abfd, size);
4011 if (!area)
4012 return (NULL);
4013 if (bfd_seek (abfd, where, seek_direction) != 0
4014 || bfd_read (area, 1, size, abfd) != size)
4015 return (NULL);
4016 return (area);
4017 } /* buy_and_read() */
4020 SUBSUBSECTION
4021 Reading linenumbers
4023 Creating the linenumber table is done by reading in the entire
4024 coff linenumber table, and creating another table for internal use.
4026 A coff linenumber table is structured so that each function
4027 is marked as having a line number of 0. Each line within the
4028 function is an offset from the first line in the function. The
4029 base of the line number information for the table is stored in
4030 the symbol associated with the function.
4032 Note: The PE format uses line number 0 for a flag indicating a
4033 new source file.
4035 The information is copied from the external to the internal
4036 table, and each symbol which marks a function is marked by
4037 pointing its...
4039 How does this work ?
4043 static boolean
4044 coff_slurp_line_table (abfd, asect)
4045 bfd *abfd;
4046 asection *asect;
4048 LINENO *native_lineno;
4049 alent *lineno_cache;
4051 BFD_ASSERT (asect->lineno == (alent *) NULL);
4053 native_lineno = (LINENO *) buy_and_read (abfd,
4054 asect->line_filepos,
4055 SEEK_SET,
4056 (size_t) (bfd_coff_linesz (abfd) *
4057 asect->lineno_count));
4058 lineno_cache =
4059 (alent *) bfd_alloc (abfd, (size_t) ((asect->lineno_count + 1) * sizeof (alent)));
4060 if (lineno_cache == NULL)
4061 return false;
4062 else
4064 unsigned int counter = 0;
4065 alent *cache_ptr = lineno_cache;
4066 LINENO *src = native_lineno;
4068 while (counter < asect->lineno_count)
4070 struct internal_lineno dst;
4071 coff_swap_lineno_in (abfd, src, &dst);
4072 cache_ptr->line_number = dst.l_lnno;
4074 if (cache_ptr->line_number == 0)
4076 boolean warned;
4077 long symndx;
4078 coff_symbol_type *sym;
4080 warned = false;
4081 symndx = dst.l_addr.l_symndx;
4082 if (symndx < 0
4083 || (unsigned long) symndx >= obj_raw_syment_count (abfd))
4085 (*_bfd_error_handler)
4086 (_("%s: warning: illegal symbol index %ld in line numbers"),
4087 bfd_get_filename (abfd), dst.l_addr.l_symndx);
4088 symndx = 0;
4089 warned = true;
4091 /* FIXME: We should not be casting between ints and
4092 pointers like this. */
4093 sym = ((coff_symbol_type *)
4094 ((symndx + obj_raw_syments (abfd))
4095 ->u.syment._n._n_n._n_zeroes));
4096 cache_ptr->u.sym = (asymbol *) sym;
4097 if (sym->lineno != NULL && ! warned)
4099 (*_bfd_error_handler)
4100 (_("%s: warning: duplicate line number information for `%s'"),
4101 bfd_get_filename (abfd),
4102 bfd_asymbol_name (&sym->symbol));
4104 sym->lineno = cache_ptr;
4106 else
4108 cache_ptr->u.offset = dst.l_addr.l_paddr
4109 - bfd_section_vma (abfd, asect);
4110 } /* If no linenumber expect a symbol index */
4112 cache_ptr++;
4113 src++;
4114 counter++;
4116 cache_ptr->line_number = 0;
4119 asect->lineno = lineno_cache;
4120 /* FIXME, free native_lineno here, or use alloca or something. */
4121 return true;
4124 /* Slurp in the symbol table, converting it to generic form. Note
4125 that if coff_relocate_section is defined, the linker will read
4126 symbols via coff_link_add_symbols, rather than via this routine. */
4128 static boolean
4129 coff_slurp_symbol_table (abfd)
4130 bfd * abfd;
4132 combined_entry_type *native_symbols;
4133 coff_symbol_type *cached_area;
4134 unsigned int *table_ptr;
4136 unsigned int number_of_symbols = 0;
4138 if (obj_symbols (abfd))
4139 return true;
4141 /* Read in the symbol table */
4142 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
4144 return (false);
4145 } /* on error */
4147 /* Allocate enough room for all the symbols in cached form */
4148 cached_area = ((coff_symbol_type *)
4149 bfd_alloc (abfd,
4150 (obj_raw_syment_count (abfd)
4151 * sizeof (coff_symbol_type))));
4153 if (cached_area == NULL)
4154 return false;
4155 table_ptr = ((unsigned int *)
4156 bfd_alloc (abfd,
4157 (obj_raw_syment_count (abfd)
4158 * sizeof (unsigned int))));
4160 if (table_ptr == NULL)
4161 return false;
4162 else
4164 coff_symbol_type *dst = cached_area;
4165 unsigned int last_native_index = obj_raw_syment_count (abfd);
4166 unsigned int this_index = 0;
4167 while (this_index < last_native_index)
4169 combined_entry_type *src = native_symbols + this_index;
4170 table_ptr[this_index] = number_of_symbols;
4171 dst->symbol.the_bfd = abfd;
4173 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
4174 /* We use the native name field to point to the cached field. */
4175 src->u.syment._n._n_n._n_zeroes = (long) dst;
4176 dst->symbol.section = coff_section_from_bfd_index (abfd,
4177 src->u.syment.n_scnum);
4178 dst->symbol.flags = 0;
4179 dst->done_lineno = false;
4181 switch (src->u.syment.n_sclass)
4183 #ifdef I960
4184 case C_LEAFEXT:
4185 #if 0
4186 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
4187 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4188 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4189 #endif
4190 /* Fall through to next case */
4192 #endif
4194 case C_EXT:
4195 case C_WEAKEXT:
4196 #if defined ARM
4197 case C_THUMBEXT:
4198 case C_THUMBEXTFUNC:
4199 #endif
4200 #ifdef RS6000COFF_C
4201 case C_HIDEXT:
4202 #endif
4203 #ifdef C_SYSTEM
4204 case C_SYSTEM: /* System Wide variable */
4205 #endif
4206 #ifdef COFF_WITH_PE
4207 /* In PE, 0x68 (104) denotes a section symbol */
4208 case C_SECTION:
4209 /* In PE, 0x69 (105) denotes a weak external symbol. */
4210 case C_NT_WEAK:
4211 #endif
4212 switch (coff_classify_symbol (abfd, &src->u.syment))
4214 case COFF_SYMBOL_GLOBAL:
4215 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4216 #if defined COFF_WITH_PE
4217 /* PE sets the symbol to a value relative to the
4218 start of the section. */
4219 dst->symbol.value = src->u.syment.n_value;
4220 #else
4221 dst->symbol.value = (src->u.syment.n_value
4222 - dst->symbol.section->vma);
4223 #endif
4224 if (ISFCN ((src->u.syment.n_type)))
4226 /* A function ext does not go at the end of a
4227 file. */
4228 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4230 break;
4232 case COFF_SYMBOL_COMMON:
4233 dst->symbol.section = bfd_com_section_ptr;
4234 dst->symbol.value = src->u.syment.n_value;
4235 break;
4237 case COFF_SYMBOL_UNDEFINED:
4238 dst->symbol.section = bfd_und_section_ptr;
4239 dst->symbol.value = 0;
4240 break;
4242 case COFF_SYMBOL_PE_SECTION:
4243 dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM;
4244 dst->symbol.value = 0;
4245 break;
4247 case COFF_SYMBOL_LOCAL:
4248 dst->symbol.flags = BSF_LOCAL;
4249 #if defined COFF_WITH_PE
4250 /* PE sets the symbol to a value relative to the
4251 start of the section. */
4252 dst->symbol.value = src->u.syment.n_value;
4253 #else
4254 dst->symbol.value = (src->u.syment.n_value
4255 - dst->symbol.section->vma);
4256 #endif
4257 if (ISFCN ((src->u.syment.n_type)))
4258 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4259 break;
4262 #ifdef RS6000COFF_C
4263 /* A symbol with a csect entry should not go at the end. */
4264 if (src->u.syment.n_numaux > 0)
4265 dst->symbol.flags |= BSF_NOT_AT_END;
4266 #endif
4268 #ifdef COFF_WITH_PE
4269 if (src->u.syment.n_sclass == C_NT_WEAK)
4270 dst->symbol.flags = BSF_WEAK;
4271 if (src->u.syment.n_sclass == C_SECTION
4272 && src->u.syment.n_scnum > 0)
4274 dst->symbol.flags = BSF_LOCAL;
4276 #endif
4278 if (src->u.syment.n_sclass == C_WEAKEXT)
4279 dst->symbol.flags = BSF_WEAK;
4281 break;
4283 case C_STAT: /* static */
4284 #ifdef I960
4285 case C_LEAFSTAT: /* static leaf procedure */
4286 #endif
4287 #if defined ARM
4288 case C_THUMBSTAT: /* Thumb static */
4289 case C_THUMBLABEL: /* Thumb label */
4290 case C_THUMBSTATFUNC:/* Thumb static function */
4291 #endif
4292 case C_LABEL: /* label */
4293 if (src->u.syment.n_scnum == N_DEBUG)
4294 dst->symbol.flags = BSF_DEBUGGING;
4295 else
4296 dst->symbol.flags = BSF_LOCAL;
4298 /* Base the value as an index from the base of the
4299 section, if there is one. */
4300 if (dst->symbol.section)
4302 #if defined COFF_WITH_PE
4303 /* PE sets the symbol to a value relative to the
4304 start of the section. */
4305 dst->symbol.value = src->u.syment.n_value;
4306 #else
4307 dst->symbol.value = (src->u.syment.n_value
4308 - dst->symbol.section->vma);
4309 #endif
4311 else
4312 dst->symbol.value = src->u.syment.n_value;
4313 break;
4315 case C_MOS: /* member of structure */
4316 case C_EOS: /* end of structure */
4317 #ifdef NOTDEF /* C_AUTOARG has the same value */
4318 #ifdef C_GLBLREG
4319 case C_GLBLREG: /* A29k-specific storage class */
4320 #endif
4321 #endif
4322 case C_REGPARM: /* register parameter */
4323 case C_REG: /* register variable */
4324 /* C_AUTOARG conflictes with TI COFF C_UEXT */
4325 #if !defined (TIC80COFF) && !defined (TICOFF)
4326 #ifdef C_AUTOARG
4327 case C_AUTOARG: /* 960-specific storage class */
4328 #endif
4329 #endif
4330 case C_TPDEF: /* type definition */
4331 case C_ARG:
4332 case C_AUTO: /* automatic variable */
4333 case C_FIELD: /* bit field */
4334 case C_ENTAG: /* enumeration tag */
4335 case C_MOE: /* member of enumeration */
4336 case C_MOU: /* member of union */
4337 case C_UNTAG: /* union tag */
4338 dst->symbol.flags = BSF_DEBUGGING;
4339 dst->symbol.value = (src->u.syment.n_value);
4340 break;
4342 case C_FILE: /* file name */
4343 case C_STRTAG: /* structure tag */
4344 #ifdef RS6000COFF_C
4345 case C_GSYM:
4346 case C_LSYM:
4347 case C_PSYM:
4348 case C_RSYM:
4349 case C_RPSYM:
4350 case C_STSYM:
4351 case C_BCOMM:
4352 case C_ECOMM:
4353 case C_DECL:
4354 case C_ENTRY:
4355 case C_FUN:
4356 case C_ESTAT:
4357 #endif
4358 dst->symbol.flags = BSF_DEBUGGING;
4359 dst->symbol.value = (src->u.syment.n_value);
4360 break;
4362 #ifdef RS6000COFF_C
4363 case C_BINCL: /* beginning of include file */
4364 case C_EINCL: /* ending of include file */
4365 /* The value is actually a pointer into the line numbers
4366 of the file. We locate the line number entry, and
4367 set the section to the section which contains it, and
4368 the value to the index in that section. */
4370 asection *sec;
4372 dst->symbol.flags = BSF_DEBUGGING;
4373 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4374 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
4375 && ((file_ptr) (sec->line_filepos
4376 + sec->lineno_count * bfd_coff_linesz (abfd))
4377 > (file_ptr) src->u.syment.n_value))
4378 break;
4379 if (sec == NULL)
4380 dst->symbol.value = 0;
4381 else
4383 dst->symbol.section = sec;
4384 dst->symbol.value = ((src->u.syment.n_value
4385 - sec->line_filepos)
4386 / bfd_coff_linesz (abfd));
4387 src->fix_line = 1;
4390 break;
4392 case C_BSTAT:
4393 dst->symbol.flags = BSF_DEBUGGING;
4395 /* The value is actually a symbol index. Save a pointer
4396 to the symbol instead of the index. FIXME: This
4397 should use a union. */
4398 src->u.syment.n_value =
4399 (long) (native_symbols + src->u.syment.n_value);
4400 dst->symbol.value = src->u.syment.n_value;
4401 src->fix_value = 1;
4402 break;
4403 #endif
4405 case C_BLOCK: /* ".bb" or ".eb" */
4406 case C_FCN: /* ".bf" or ".ef" (or PE ".lf") */
4407 case C_EFCN: /* physical end of function */
4408 #if defined COFF_WITH_PE
4409 /* PE sets the symbol to a value relative to the start
4410 of the section. */
4411 dst->symbol.value = src->u.syment.n_value;
4412 if (strcmp (dst->symbol.name, ".bf") != 0)
4414 /* PE uses funny values for .ef and .lf; don't
4415 relocate them. */
4416 dst->symbol.flags = BSF_DEBUGGING;
4418 else
4419 dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC;
4420 #else
4421 /* Base the value as an index from the base of the
4422 section. */
4423 dst->symbol.flags = BSF_LOCAL;
4424 dst->symbol.value = (src->u.syment.n_value
4425 - dst->symbol.section->vma);
4426 #endif
4427 break;
4429 case C_STATLAB: /* Static load time label */
4430 dst->symbol.value = src->u.syment.n_value;
4431 dst->symbol.flags = BSF_GLOBAL;
4432 break;
4434 case C_NULL:
4435 /* PE DLLs sometimes have zeroed out symbols for some
4436 reason. Just ignore them without a warning. */
4437 if (src->u.syment.n_type == 0
4438 && src->u.syment.n_value == 0
4439 && src->u.syment.n_scnum == 0)
4440 break;
4441 /* Fall through. */
4442 case C_EXTDEF: /* external definition */
4443 case C_ULABEL: /* undefined label */
4444 case C_USTATIC: /* undefined static */
4445 #ifndef COFF_WITH_PE
4446 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4447 class to represent a section symbol */
4448 case C_LINE: /* line # reformatted as symbol table entry */
4449 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4450 case C_ALIAS: /* duplicate tag */
4451 #endif
4452 /* New storage classes for TI COFF */
4453 #if defined(TIC80COFF) || defined(TICOFF)
4454 case C_UEXT: /* Tentative external definition */
4455 #endif
4456 case C_EXTLAB: /* External load time label */
4457 case C_HIDDEN: /* ext symbol in dmert public lib */
4458 default:
4459 (*_bfd_error_handler)
4460 (_("%s: Unrecognized storage class %d for %s symbol `%s'"),
4461 bfd_get_filename (abfd), src->u.syment.n_sclass,
4462 dst->symbol.section->name, dst->symbol.name);
4463 dst->symbol.flags = BSF_DEBUGGING;
4464 dst->symbol.value = (src->u.syment.n_value);
4465 break;
4468 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4470 dst->native = src;
4472 dst->symbol.udata.i = 0;
4473 dst->lineno = (alent *) NULL;
4474 this_index += (src->u.syment.n_numaux) + 1;
4475 dst++;
4476 number_of_symbols++;
4477 } /* walk the native symtab */
4478 } /* bfdize the native symtab */
4480 obj_symbols (abfd) = cached_area;
4481 obj_raw_syments (abfd) = native_symbols;
4483 bfd_get_symcount (abfd) = number_of_symbols;
4484 obj_convert (abfd) = table_ptr;
4485 /* Slurp the line tables for each section too */
4487 asection *p;
4488 p = abfd->sections;
4489 while (p)
4491 coff_slurp_line_table (abfd, p);
4492 p = p->next;
4495 return true;
4496 } /* coff_slurp_symbol_table() */
4498 /* Classify a COFF symbol. A couple of targets have globally visible
4499 symbols which are not class C_EXT, and this handles those. It also
4500 recognizes some special PE cases. */
4502 static enum coff_symbol_classification
4503 coff_classify_symbol (abfd, syment)
4504 bfd *abfd;
4505 struct internal_syment *syment;
4507 /* FIXME: This partially duplicates the switch in
4508 coff_slurp_symbol_table. */
4509 switch (syment->n_sclass)
4511 case C_EXT:
4512 case C_WEAKEXT:
4513 #ifdef I960
4514 case C_LEAFEXT:
4515 #endif
4516 #ifdef ARM
4517 case C_THUMBEXT:
4518 case C_THUMBEXTFUNC:
4519 #endif
4520 #ifdef C_SYSTEM
4521 case C_SYSTEM:
4522 #endif
4523 #ifdef COFF_WITH_PE
4524 case C_NT_WEAK:
4525 #endif
4526 if (syment->n_scnum == 0)
4528 if (syment->n_value == 0)
4529 return COFF_SYMBOL_UNDEFINED;
4530 else
4531 return COFF_SYMBOL_COMMON;
4533 return COFF_SYMBOL_GLOBAL;
4535 default:
4536 break;
4539 #ifdef COFF_WITH_PE
4540 if (syment->n_sclass == C_STAT)
4542 if (syment->n_scnum == 0)
4544 /* The Microsoft compiler sometimes generates these if a
4545 small static function is inlined every time it is used.
4546 The function is discarded, but the symbol table entry
4547 remains. */
4548 return COFF_SYMBOL_LOCAL;
4551 #ifdef STRICT_PE_FORMAT
4552 /* This is correct for Microsoft generated objects, but it
4553 breaks gas generated objects. */
4555 if (syment->n_value == 0)
4557 asection *sec;
4558 char buf[SYMNMLEN + 1];
4560 sec = coff_section_from_bfd_index (abfd, syment->n_scnum);
4561 if (sec != NULL
4562 && (strcmp (bfd_get_section_name (abfd, sec),
4563 _bfd_coff_internal_syment_name (abfd, syment, buf))
4564 == 0))
4565 return COFF_SYMBOL_PE_SECTION;
4567 #endif
4569 return COFF_SYMBOL_LOCAL;
4572 if (syment->n_sclass == C_SECTION)
4574 /* In some cases in a DLL generated by the Microsoft linker, the
4575 n_value field will contain garbage. FIXME: This should
4576 probably be handled by the swapping function instead. */
4577 syment->n_value = 0;
4578 if (syment->n_scnum == 0)
4579 return COFF_SYMBOL_UNDEFINED;
4580 return COFF_SYMBOL_PE_SECTION;
4582 #endif /* COFF_WITH_PE */
4584 /* If it is not a global symbol, we presume it is a local symbol. */
4586 if (syment->n_scnum == 0)
4588 char buf[SYMNMLEN + 1];
4590 (*_bfd_error_handler)
4591 (_("warning: %s: local symbol `%s' has no section"),
4592 bfd_get_filename (abfd),
4593 _bfd_coff_internal_syment_name (abfd, syment, buf));
4596 return COFF_SYMBOL_LOCAL;
4600 SUBSUBSECTION
4601 Reading relocations
4603 Coff relocations are easily transformed into the internal BFD form
4604 (@code{arelent}).
4606 Reading a coff relocation table is done in the following stages:
4608 o Read the entire coff relocation table into memory.
4610 o Process each relocation in turn; first swap it from the
4611 external to the internal form.
4613 o Turn the symbol referenced in the relocation's symbol index
4614 into a pointer into the canonical symbol table.
4615 This table is the same as the one returned by a call to
4616 @code{bfd_canonicalize_symtab}. The back end will call that
4617 routine and save the result if a canonicalization hasn't been done.
4619 o The reloc index is turned into a pointer to a howto
4620 structure, in a back end specific way. For instance, the 386
4621 and 960 use the @code{r_type} to directly produce an index
4622 into a howto table vector; the 88k subtracts a number from the
4623 @code{r_type} field and creates an addend field.
4628 #ifndef CALC_ADDEND
4629 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
4631 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
4632 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
4633 coffsym = (obj_symbols (abfd) \
4634 + (cache_ptr->sym_ptr_ptr - symbols)); \
4635 else if (ptr) \
4636 coffsym = coff_symbol_from (abfd, ptr); \
4637 if (coffsym != (coff_symbol_type *) NULL \
4638 && coffsym->native->u.syment.n_scnum == 0) \
4639 cache_ptr->addend = 0; \
4640 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
4641 && ptr->section != (asection *) NULL) \
4642 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
4643 else \
4644 cache_ptr->addend = 0; \
4646 #endif
4648 static boolean
4649 coff_slurp_reloc_table (abfd, asect, symbols)
4650 bfd * abfd;
4651 sec_ptr asect;
4652 asymbol ** symbols;
4654 RELOC *native_relocs;
4655 arelent *reloc_cache;
4656 arelent *cache_ptr;
4658 unsigned int idx;
4660 if (asect->relocation)
4661 return true;
4662 if (asect->reloc_count == 0)
4663 return true;
4664 if (asect->flags & SEC_CONSTRUCTOR)
4665 return true;
4666 if (!coff_slurp_symbol_table (abfd))
4667 return false;
4668 native_relocs =
4669 (RELOC *) buy_and_read (abfd,
4670 asect->rel_filepos,
4671 SEEK_SET,
4672 (size_t) (bfd_coff_relsz (abfd) *
4673 asect->reloc_count));
4674 reloc_cache = (arelent *)
4675 bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent)));
4677 if (reloc_cache == NULL)
4678 return false;
4681 for (idx = 0; idx < asect->reloc_count; idx++)
4683 struct internal_reloc dst;
4684 struct external_reloc *src;
4685 #ifndef RELOC_PROCESSING
4686 asymbol *ptr;
4687 #endif
4689 cache_ptr = reloc_cache + idx;
4690 src = native_relocs + idx;
4692 coff_swap_reloc_in (abfd, src, &dst);
4694 #ifdef RELOC_PROCESSING
4695 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
4696 #else
4697 cache_ptr->address = dst.r_vaddr;
4699 if (dst.r_symndx != -1)
4701 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
4703 (*_bfd_error_handler)
4704 (_("%s: warning: illegal symbol index %ld in relocs"),
4705 bfd_get_filename (abfd), dst.r_symndx);
4706 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
4707 ptr = NULL;
4709 else
4711 cache_ptr->sym_ptr_ptr = (symbols
4712 + obj_convert (abfd)[dst.r_symndx]);
4713 ptr = *(cache_ptr->sym_ptr_ptr);
4716 else
4718 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
4719 ptr = NULL;
4722 /* The symbols definitions that we have read in have been
4723 relocated as if their sections started at 0. But the offsets
4724 refering to the symbols in the raw data have not been
4725 modified, so we have to have a negative addend to compensate.
4727 Note that symbols which used to be common must be left alone */
4729 /* Calculate any reloc addend by looking at the symbol */
4730 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
4732 cache_ptr->address -= asect->vma;
4733 /* !! cache_ptr->section = (asection *) NULL;*/
4735 /* Fill in the cache_ptr->howto field from dst.r_type */
4736 RTYPE2HOWTO (cache_ptr, &dst);
4737 #endif /* RELOC_PROCESSING */
4739 if (cache_ptr->howto == NULL)
4741 (*_bfd_error_handler)
4742 (_("%s: illegal relocation type %d at address 0x%lx"),
4743 bfd_get_filename (abfd), dst.r_type, (long) dst.r_vaddr);
4744 bfd_set_error (bfd_error_bad_value);
4745 return false;
4749 asect->relocation = reloc_cache;
4750 return true;
4753 #ifndef coff_rtype_to_howto
4754 #ifdef RTYPE2HOWTO
4756 /* Get the howto structure for a reloc. This is only used if the file
4757 including this one defines coff_relocate_section to be
4758 _bfd_coff_generic_relocate_section, so it is OK if it does not
4759 always work. It is the responsibility of the including file to
4760 make sure it is reasonable if it is needed. */
4762 static reloc_howto_type *coff_rtype_to_howto
4763 PARAMS ((bfd *, asection *, struct internal_reloc *,
4764 struct coff_link_hash_entry *, struct internal_syment *,
4765 bfd_vma *));
4767 /*ARGSUSED*/
4768 static reloc_howto_type *
4769 coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
4770 bfd *abfd ATTRIBUTE_UNUSED;
4771 asection *sec ATTRIBUTE_UNUSED;
4772 struct internal_reloc *rel;
4773 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED;
4774 struct internal_syment *sym ATTRIBUTE_UNUSED;
4775 bfd_vma *addendp ATTRIBUTE_UNUSED;
4777 arelent genrel;
4779 RTYPE2HOWTO (&genrel, rel);
4780 return genrel.howto;
4783 #else /* ! defined (RTYPE2HOWTO) */
4785 #define coff_rtype_to_howto NULL
4787 #endif /* ! defined (RTYPE2HOWTO) */
4788 #endif /* ! defined (coff_rtype_to_howto) */
4790 /* This is stupid. This function should be a boolean predicate. */
4791 static long
4792 coff_canonicalize_reloc (abfd, section, relptr, symbols)
4793 bfd * abfd;
4794 sec_ptr section;
4795 arelent ** relptr;
4796 asymbol ** symbols;
4798 arelent *tblptr = section->relocation;
4799 unsigned int count = 0;
4802 if (section->flags & SEC_CONSTRUCTOR)
4804 /* this section has relocs made up by us, they are not in the
4805 file, so take them out of their chain and place them into
4806 the data area provided */
4807 arelent_chain *chain = section->constructor_chain;
4808 for (count = 0; count < section->reloc_count; count++)
4810 *relptr++ = &chain->relent;
4811 chain = chain->next;
4815 else
4817 if (! coff_slurp_reloc_table (abfd, section, symbols))
4818 return -1;
4820 tblptr = section->relocation;
4822 for (; count++ < section->reloc_count;)
4823 *relptr++ = tblptr++;
4827 *relptr = 0;
4828 return section->reloc_count;
4831 #ifdef GNU960
4832 file_ptr
4833 coff_sym_filepos (abfd)
4834 bfd *abfd;
4836 return obj_sym_filepos (abfd);
4838 #endif
4840 #ifndef coff_reloc16_estimate
4841 #define coff_reloc16_estimate dummy_reloc16_estimate
4843 static int dummy_reloc16_estimate
4844 PARAMS ((bfd *, asection *, arelent *, unsigned int,
4845 struct bfd_link_info *));
4847 static int
4848 dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
4849 bfd *abfd ATTRIBUTE_UNUSED;
4850 asection *input_section ATTRIBUTE_UNUSED;
4851 arelent *reloc ATTRIBUTE_UNUSED;
4852 unsigned int shrink ATTRIBUTE_UNUSED;
4853 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
4855 abort ();
4856 return 0;
4859 #endif
4861 #ifndef coff_reloc16_extra_cases
4863 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
4865 /* This works even if abort is not declared in any header file. */
4867 static void dummy_reloc16_extra_cases
4868 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
4869 bfd_byte *, unsigned int *, unsigned int *));
4871 static void
4872 dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
4873 dst_ptr)
4874 bfd *abfd ATTRIBUTE_UNUSED;
4875 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
4876 struct bfd_link_order *link_order ATTRIBUTE_UNUSED;
4877 arelent *reloc ATTRIBUTE_UNUSED;
4878 bfd_byte *data ATTRIBUTE_UNUSED;
4879 unsigned int *src_ptr ATTRIBUTE_UNUSED;
4880 unsigned int *dst_ptr ATTRIBUTE_UNUSED;
4882 abort ();
4884 #endif
4886 /* If coff_relocate_section is defined, we can use the optimized COFF
4887 backend linker. Otherwise we must continue to use the old linker. */
4888 #ifdef coff_relocate_section
4889 #ifndef coff_bfd_link_hash_table_create
4890 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
4891 #endif
4892 #ifndef coff_bfd_link_add_symbols
4893 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
4894 #endif
4895 #ifndef coff_bfd_final_link
4896 #define coff_bfd_final_link _bfd_coff_final_link
4897 #endif
4898 #else /* ! defined (coff_relocate_section) */
4899 #define coff_relocate_section NULL
4900 #ifndef coff_bfd_link_hash_table_create
4901 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
4902 #endif
4903 #ifndef coff_bfd_link_add_symbols
4904 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
4905 #endif
4906 #define coff_bfd_final_link _bfd_generic_final_link
4907 #endif /* ! defined (coff_relocate_section) */
4909 #define coff_bfd_link_split_section _bfd_generic_link_split_section
4911 #ifndef coff_start_final_link
4912 #define coff_start_final_link NULL
4913 #endif
4915 #ifndef coff_adjust_symndx
4916 #define coff_adjust_symndx NULL
4917 #endif
4919 #ifndef coff_link_add_one_symbol
4920 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
4921 #endif
4923 #ifndef coff_link_output_has_begun
4925 static boolean coff_link_output_has_begun
4926 PARAMS ((bfd *, struct coff_final_link_info *));
4928 static boolean
4929 coff_link_output_has_begun (abfd, info)
4930 bfd * abfd;
4931 struct coff_final_link_info * info ATTRIBUTE_UNUSED;
4933 return abfd->output_has_begun;
4935 #endif
4937 #ifndef coff_final_link_postscript
4939 static boolean coff_final_link_postscript
4940 PARAMS ((bfd *, struct coff_final_link_info *));
4942 static boolean
4943 coff_final_link_postscript (abfd, pfinfo)
4944 bfd * abfd ATTRIBUTE_UNUSED;
4945 struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED;
4947 return true;
4949 #endif
4951 #ifndef coff_SWAP_aux_in
4952 #define coff_SWAP_aux_in coff_swap_aux_in
4953 #endif
4954 #ifndef coff_SWAP_sym_in
4955 #define coff_SWAP_sym_in coff_swap_sym_in
4956 #endif
4957 #ifndef coff_SWAP_lineno_in
4958 #define coff_SWAP_lineno_in coff_swap_lineno_in
4959 #endif
4960 #ifndef coff_SWAP_aux_out
4961 #define coff_SWAP_aux_out coff_swap_aux_out
4962 #endif
4963 #ifndef coff_SWAP_sym_out
4964 #define coff_SWAP_sym_out coff_swap_sym_out
4965 #endif
4966 #ifndef coff_SWAP_lineno_out
4967 #define coff_SWAP_lineno_out coff_swap_lineno_out
4968 #endif
4969 #ifndef coff_SWAP_reloc_out
4970 #define coff_SWAP_reloc_out coff_swap_reloc_out
4971 #endif
4972 #ifndef coff_SWAP_filehdr_out
4973 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
4974 #endif
4975 #ifndef coff_SWAP_aouthdr_out
4976 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
4977 #endif
4978 #ifndef coff_SWAP_scnhdr_out
4979 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
4980 #endif
4981 #ifndef coff_SWAP_reloc_in
4982 #define coff_SWAP_reloc_in coff_swap_reloc_in
4983 #endif
4984 #ifndef coff_SWAP_filehdr_in
4985 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
4986 #endif
4987 #ifndef coff_SWAP_aouthdr_in
4988 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
4989 #endif
4990 #ifndef coff_SWAP_scnhdr_in
4991 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
4992 #endif
4994 static const bfd_coff_backend_data bfd_coff_std_swap_table =
4996 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
4997 coff_SWAP_aux_out, coff_SWAP_sym_out,
4998 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
4999 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5000 coff_SWAP_scnhdr_out,
5001 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5002 #ifdef COFF_LONG_FILENAMES
5003 true,
5004 #else
5005 false,
5006 #endif
5007 #ifdef COFF_LONG_SECTION_NAMES
5008 true,
5009 #else
5010 false,
5011 #endif
5012 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5013 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5014 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5015 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5016 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5017 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5018 coff_classify_symbol, coff_compute_section_file_positions,
5019 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5020 coff_adjust_symndx, coff_link_add_one_symbol,
5021 coff_link_output_has_begun, coff_final_link_postscript
5024 #ifndef coff_close_and_cleanup
5025 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5026 #endif
5028 #ifndef coff_bfd_free_cached_info
5029 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5030 #endif
5032 #ifndef coff_get_section_contents
5033 #define coff_get_section_contents _bfd_generic_get_section_contents
5034 #endif
5036 #ifndef coff_bfd_copy_private_symbol_data
5037 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5038 #endif
5040 #ifndef coff_bfd_copy_private_section_data
5041 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5042 #endif
5044 #ifndef coff_bfd_copy_private_bfd_data
5045 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5046 #endif
5048 #ifndef coff_bfd_merge_private_bfd_data
5049 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5050 #endif
5052 #ifndef coff_bfd_set_private_flags
5053 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5054 #endif
5056 #ifndef coff_bfd_print_private_bfd_data
5057 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5058 #endif
5060 #ifndef coff_bfd_is_local_label_name
5061 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5062 #endif
5064 #ifndef coff_read_minisymbols
5065 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5066 #endif
5068 #ifndef coff_minisymbol_to_symbol
5069 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5070 #endif
5072 /* The reloc lookup routine must be supplied by each individual COFF
5073 backend. */
5074 #ifndef coff_bfd_reloc_type_lookup
5075 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5076 #endif
5078 #ifndef coff_bfd_get_relocated_section_contents
5079 #define coff_bfd_get_relocated_section_contents \
5080 bfd_generic_get_relocated_section_contents
5081 #endif
5083 #ifndef coff_bfd_relax_section
5084 #define coff_bfd_relax_section bfd_generic_relax_section
5085 #endif
5087 #ifndef coff_bfd_gc_sections
5088 #define coff_bfd_gc_sections bfd_generic_gc_sections
5089 #endif
5091 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5092 const bfd_target VAR = \
5094 NAME , \
5095 bfd_target_coff_flavour, \
5096 BFD_ENDIAN_BIG, /* data byte order is big */ \
5097 BFD_ENDIAN_BIG, /* header byte order is big */ \
5098 /* object flags */ \
5099 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5100 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5101 /* section flags */ \
5102 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5103 UNDER, /* leading symbol underscore */ \
5104 '/', /* ar_pad_char */ \
5105 15, /* ar_max_namelen */ \
5107 /* Data conversion functions. */ \
5108 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5109 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5110 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5112 /* Header conversion functions. */ \
5113 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5114 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5115 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5117 /* bfd_check_format */ \
5118 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5119 _bfd_dummy_target }, \
5120 /* bfd_set_format */ \
5121 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5122 /* bfd_write_contents */ \
5123 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5124 bfd_false }, \
5126 BFD_JUMP_TABLE_GENERIC (coff), \
5127 BFD_JUMP_TABLE_COPY (coff), \
5128 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5129 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5130 BFD_JUMP_TABLE_SYMBOLS (coff), \
5131 BFD_JUMP_TABLE_RELOCS (coff), \
5132 BFD_JUMP_TABLE_WRITE (coff), \
5133 BFD_JUMP_TABLE_LINK (coff), \
5134 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5136 ALTERNATIVE, \
5138 COFF_SWAP_TABLE \
5141 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5142 const bfd_target VAR = \
5144 NAME , \
5145 bfd_target_coff_flavour, \
5146 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5147 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5148 /* object flags */ \
5149 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5150 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5151 /* section flags */ \
5152 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5153 UNDER, /* leading symbol underscore */ \
5154 '/', /* ar_pad_char */ \
5155 15, /* ar_max_namelen */ \
5157 /* Data conversion functions. */ \
5158 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5159 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5160 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5161 /* Header conversion functions. */ \
5162 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5163 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5164 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5165 /* bfd_check_format */ \
5166 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5167 _bfd_dummy_target }, \
5168 /* bfd_set_format */ \
5169 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5170 /* bfd_write_contents */ \
5171 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5172 bfd_false }, \
5174 BFD_JUMP_TABLE_GENERIC (coff), \
5175 BFD_JUMP_TABLE_COPY (coff), \
5176 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5177 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5178 BFD_JUMP_TABLE_SYMBOLS (coff), \
5179 BFD_JUMP_TABLE_RELOCS (coff), \
5180 BFD_JUMP_TABLE_WRITE (coff), \
5181 BFD_JUMP_TABLE_LINK (coff), \
5182 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5184 ALTERNATIVE, \
5186 COFF_SWAP_TABLE \