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,
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
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
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}.
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.
77 How the coff backend works
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
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.
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
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.
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.
244 The hidden information for an <<asymbol>> is described in a
245 <<combined_entry_type>>:
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
281 . union internal_auxent auxent;
282 . struct internal_syment syment;
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 *}
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;
310 #include "coffswap.h"
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
));
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(). */
355 sec_to_styp_flags (sec_name
, sec_flags
)
356 CONST
char *sec_name
;
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
;
374 else if (!strcmp (sec_name
, _COMMENT
))
376 styp_flags
= STYP_INFO
;
377 #endif /* _COMMENT */
380 else if (!strcmp (sec_name
, _LIB
))
382 styp_flags
= STYP_LIB
;
386 else if (!strcmp (sec_name
, _LIT
))
388 styp_flags
= STYP_LIT
;
391 else if (!strcmp (sec_name
, ".debug"))
394 styp_flags
= STYP_DEBUG
;
396 styp_flags
= STYP_INFO
;
399 else if (!strncmp (sec_name
, ".stab", 5))
401 #ifdef COFF_ALIGN_IN_S_FLAGS
402 styp_flags
= STYP_DSECT
;
404 styp_flags
= STYP_INFO
;
408 else if (!strcmp (sec_name
, _PAD
))
410 styp_flags
= STYP_PAD
;
412 else if (!strcmp (sec_name
, _LOADER
))
414 styp_flags
= STYP_LOADER
;
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
;
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
;
444 if (sec_flags
& SEC_CLINK
)
445 styp_flags
|= STYP_CLINK
;
449 if (sec_flags
& SEC_BLOCK
)
450 styp_flags
|= STYP_BLOCK
;
454 if ((sec_flags
& (SEC_NEVER_LOAD
| SEC_COFF_SHARED_LIBRARY
)) != 0)
455 styp_flags
|= STYP_NOLOAD
;
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. */
470 sec_to_styp_flags (sec_name
, sec_flags
)
471 const char *sec_name ATTRIBUTE_UNUSED
;
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. */
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 */
494 /* skip CONSTRUCTOR */
497 if ((sec_flags
& (SEC_NEVER_LOAD
| SEC_COFF_SHARED_LIBRARY
)) != 0)
498 styp_flags
|= STYP_NOLOAD
;
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
;
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 */
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(). */
540 styp_to_sec_flags (abfd
, hdr
, name
, section
)
541 bfd
*abfd ATTRIBUTE_UNUSED
;
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;
551 if (styp_flags
& STYP_BLOCK
)
552 sec_flags
|= SEC_BLOCK
;
556 if (styp_flags
& STYP_CLINK
)
557 sec_flags
|= SEC_CLINK
;
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
;
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
;
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
;
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
;
604 else if (styp_flags
& STYP_PAD
)
608 else if (strcmp (name
, _TEXT
) == 0)
610 if (sec_flags
& SEC_NEVER_LOAD
)
611 sec_flags
|= SEC_CODE
| SEC_COFF_SHARED_LIBRARY
;
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
;
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
;
629 sec_flags
|= SEC_ALLOC
;
631 else if (strcmp (name
, ".debug") == 0
633 || strcmp (name
, _COMMENT
) == 0
635 || strncmp (name
, ".stab", 5) == 0)
637 #ifdef COFF_PAGE_SIZE
638 sec_flags
|= SEC_DEBUGGING
;
642 else if (strcmp (name
, _LIB
) == 0)
646 else if (strcmp (name
, _LIT
) == 0)
648 sec_flags
= SEC_LOAD
| SEC_ALLOC
| SEC_READONLY
;
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
;
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? */
695 styp_to_sec_flags (abfd
, hdr
, name
, section
)
696 bfd
*abfd ATTRIBUTE_UNUSED
;
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
;
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
;
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
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
783 if (_bfd_coff_get_external_symbols (abfd
))
785 bfd_byte
*esymstart
, *esym
, *esymend
;
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];
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. */
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 $) as the comdat symbol. */
833 /* All 3 branches use this */
834 symname
= _bfd_coff_internal_syment_name (abfd
, &isym
, buf
);
843 /* The first time we've seen the symbol. */
844 union internal_auxent aux
;
848 /* If it isn't the stuff we're expecting, die;
849 The MS documentation is vague, but it
850 appears that the second entry serves BOTH
851 as the comdat symbol and the defining
852 symbol record (either C_STAT or C_EXT,
853 possibly with an aux entry with debug
854 information if it's a function.) It
855 appears the only way to find the second one
856 is to count. (On Intel, they appear to be
857 adjacent, but on Alpha, they have been
860 Here, we think we've found the first one,
861 but there's some checking we can do to be
864 if (! (isym
.n_sclass
== C_STAT
865 && isym
.n_type
== T_NULL
866 && isym
.n_value
== 0))
869 /* FIXME LATER: MSVC generates section names
870 like .text for comdats. Gas generates
871 names like .text$foo__Fv (in the case of a
872 function). See comment above for more. */
874 if (strcmp (name
, symname
) != 0)
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
, '$');
884 if (target_name
!= NULL
)
892 /* FIXME: Microsoft uses NODUPLICATES and
893 ASSOCIATIVE, but gnu uses ANY and
894 SAME_SIZE. Unfortunately, gnu doesn't do
895 the comdat symbols right. So, until we can
896 fix it to do the right thing, we are
897 temporarily disabling comdats for the MS
898 types (they're used in DLLs and C++, but we
899 don't support *their* C++ libraries anyway
902 /* Cygwin does not follow the MS style, and
903 uses ANY and SAME_SIZE where NODUPLICATES
904 and ASSOCIATIVE should be used. For
905 Interix, we just do the right thing up
908 switch (aux
.x_scn
.x_comdat
)
910 case IMAGE_COMDAT_SELECT_NODUPLICATES
:
911 #ifdef STRICT_PE_FORMAT
912 sec_flags
|= SEC_LINK_DUPLICATES_ONE_ONLY
;
914 sec_flags
&= ~SEC_LINK_ONCE
;
918 case IMAGE_COMDAT_SELECT_ANY
:
919 sec_flags
|= SEC_LINK_DUPLICATES_DISCARD
;
922 case IMAGE_COMDAT_SELECT_SAME_SIZE
:
923 sec_flags
|= SEC_LINK_DUPLICATES_SAME_SIZE
;
926 case IMAGE_COMDAT_SELECT_EXACT_MATCH
:
927 /* Not yet fully implemented ??? */
928 sec_flags
|= SEC_LINK_DUPLICATES_SAME_CONTENTS
;
931 /* debug$S gets this case; other
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
;
943 sec_flags
&= ~SEC_LINK_ONCE
;
947 default: /* 0 means "no symbol" */
948 /* debug$F gets this case; other
950 sec_flags
|= SEC_LINK_DUPLICATES_DISCARD
;
957 /* Gas mode: the first matching on partial name. */
959 #ifndef TARGET_UNDERSCORE
960 #define TARGET_UNDERSCORE 0
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
);
972 /* MSVC mode: the lexically second symbol (or
973 drop through from the above). */
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. */
983 bfd_alloc (abfd
, sizeof (struct bfd_comdat_info
));
984 if (section
->comdat
== NULL
)
986 section
->comdat
->symbol
=
987 (esym
- esymstart
) / bfd_coff_symesz (abfd
);
989 newname
= bfd_alloc (abfd
, strlen (symname
) + 1);
993 strcpy (newname
, symname
);
994 section
->comdat
->name
= newname
;
1002 esym
+= (isym
.n_numaux
+ 1) * bfd_coff_symesz (abfd
);
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
;
1022 #endif /* COFF_WITH_PE */
1024 #define get_index(symbol) ((symbol)->udata.i)
1028 bfd_coff_backend_data
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:
1051 . void (*_bfd_coff_swap_aux_in) PARAMS ((
1060 . void (*_bfd_coff_swap_sym_in) PARAMS ((
1065 . void (*_bfd_coff_swap_lineno_in) PARAMS ((
1071 Special entry points for gas to swap out coff parts:
1073 . unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
1082 . unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
1087 . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
1092 . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
1097 . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
1102 . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
1107 . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
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 ((
1131 . void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
1135 . void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
1139 . void (*_bfd_coff_swap_reloc_in) PARAMS ((
1143 . boolean (*_bfd_coff_bad_format_hook) PARAMS ((
1145 . PTR internal_filehdr));
1146 . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
1148 . PTR internal_filehdr));
1149 . PTR (*_bfd_coff_mkobject_hook) PARAMS ((
1151 . PTR internal_filehdr,
1152 . PTR internal_aouthdr));
1153 . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
1155 . PTR internal_scnhdr,
1157 . asection *section));
1158 . void (*_bfd_set_alignment_hook) PARAMS ((
1161 . PTR internal_scnhdr));
1162 . boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
1164 . boolean (*_bfd_coff_symname_in_debug) PARAMS ((
1166 . struct internal_syment *sym));
1167 . boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
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 ((
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 ((
1182 . struct bfd_link_info *link_info,
1183 . struct bfd_link_order *link_order,
1186 . unsigned int *src_ptr,
1187 . unsigned int *dst_ptr));
1188 . int (*_bfd_coff_reloc16_estimate) PARAMS ((
1190 . asection *input_section,
1192 . unsigned int shrink,
1193 . struct bfd_link_info *link_info));
1194 . enum coff_symbol_classification (*_bfd_coff_classify_symbol) PARAMS ((
1196 . struct internal_syment *));
1197 . boolean (*_bfd_coff_compute_section_file_positions) PARAMS ((
1199 . boolean (*_bfd_coff_start_final_link) PARAMS ((
1201 . struct bfd_link_info *info));
1202 . boolean (*_bfd_coff_relocate_section) PARAMS ((
1204 . struct bfd_link_info *info,
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 ((
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 ((
1220 . struct bfd_link_info *info,
1223 . struct internal_reloc *reloc,
1224 . boolean *adjustedp));
1225 . boolean (*_bfd_coff_link_add_one_symbol) PARAMS ((
1226 . struct bfd_link_info *info,
1230 . asection *section,
1232 . const char *string,
1235 . struct bfd_link_hash_entry **hashp));
1237 . boolean (*_bfd_coff_link_output_has_begun) PARAMS ((
1239 . struct coff_final_link_info * pfinfo));
1240 . boolean (*_bfd_coff_final_link_postscript) PARAMS ((
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)\
1340 .#define bfd_coff_compute_section_file_positions(abfd)\
1341 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1344 .#define bfd_coff_start_final_link(obfd, info)\
1345 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
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. */
1370 coff_bad_format_hook (abfd
, filehdr
)
1371 bfd
* abfd ATTRIBUTE_UNUSED
;
1374 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1376 if (BADMAG (*internal_f
))
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
1388 #if defined(M88) || defined(I960)
1389 if (internal_f
->f_opthdr
!= 0 && bfd_coff_aoutsz (abfd
) != internal_f
->f_opthdr
)
1396 /* Check whether this section uses an alignment other than the
1400 coff_set_custom_section_alignment (abfd
, section
, alignment_table
, table_size
)
1401 bfd
*abfd ATTRIBUTE_UNUSED
;
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
;
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)
1418 if (i
>= table_size
)
1421 if (alignment_table
[i
].default_alignment_min
!= COFF_ALIGNMENT_FIELD_EMPTY
1422 && default_alignment
< alignment_table
[i
].default_alignment_min
)
1425 if (alignment_table
[i
].default_alignment_max
!= COFF_ALIGNMENT_FIELD_EMPTY
1426 && default_alignment
> alignment_table
[i
].default_alignment_max
)
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
,
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. */
1460 coff_new_section_hook (abfd
, section
)
1464 combined_entry_type
*native
;
1466 section
->alignment_power
= COFF_DEFAULT_SECTION_ALIGNMENT_POWER
;
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
;
1477 /* Allocate aux records for section symbols, to store size and
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));
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
);
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
));
1512 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1513 bfd
* abfd ATTRIBUTE_UNUSED
;
1517 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1521 /* Extract ALIGN from 2**ALIGN stored in section header */
1522 for (i
= 0; i
< 32; i
++)
1523 if ((1 << i
) >= hdr
->s_align
)
1527 /* TI tools puts the alignment power in bits 8-11 */
1528 i
= (hdr
->s_flags
>> 8) & 0xF ;
1530 #ifdef COFF_DECODE_ALIGNMENT
1531 i
= COFF_DECODE_ALIGNMENT(hdr
->s_flags
);
1533 section
->alignment_power
= i
;
1535 #ifdef coff_set_section_load_page
1536 coff_set_section_load_page (section
, hdr
->s_page
);
1540 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
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
));
1559 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1560 bfd
* abfd ATTRIBUTE_UNUSED
;
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. */
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. */
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
;
1604 #undef ELIFALIGN_SET
1606 #else /* ! COFF_WITH_PE */
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
));
1616 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1621 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1625 if ((hdr
->s_flags
& STYP_OVRFLO
) == 0)
1628 real_sec
= coff_section_from_bfd_index (abfd
, hdr
->s_nreloc
);
1629 if (real_sec
== NULL
)
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
)
1640 --abfd
->section_count
;
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
*));
1660 coff_mkobject (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)
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);*/
1681 /* Create the COFF backend specific information. */
1682 #ifndef coff_mkobject_hook
1684 coff_mkobject_hook (abfd
, filehdr
, aouthdr
)
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)
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
;
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
;
1740 /* Set the flags field from the COFF header read in */
1741 if (! _bfd_coff_arm_set_private_flags (abfd
, internal_f
->f_flags
))
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
;
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. */
1764 coff_set_arch_mach_hook (abfd
, filehdr
)
1769 enum bfd_architecture arch
;
1770 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1773 switch (internal_f
->f_magic
)
1777 arch
= bfd_arch_powerpc
;
1778 machine
= 0; /* what does this mean? (krk) */
1784 case I386AIXMAGIC
: /* Danbury PS/2 AIX C Compiler */
1785 case LYNXCOFFMAGIC
: /* shadows the m68k Lynx number below, sigh */
1786 arch
= bfd_arch_i386
;
1790 #ifdef A29K_MAGIC_BIG
1791 case A29K_MAGIC_BIG
:
1792 case A29K_MAGIC_LITTLE
:
1793 arch
= bfd_arch_a29k
;
1801 arch
= bfd_arch_arm
;
1802 switch (internal_f
->f_flags
& F_ARM_ARCHITECTURE_MASK
)
1804 case F_ARM_2
: machine
= bfd_mach_arm_2
; break;
1805 case F_ARM_2a
: machine
= bfd_mach_arm_2a
; break;
1806 case F_ARM_3
: machine
= bfd_mach_arm_3
; break;
1808 case F_ARM_3M
: machine
= bfd_mach_arm_3M
; break;
1809 case F_ARM_4
: machine
= bfd_mach_arm_4
; break;
1810 case F_ARM_4T
: machine
= bfd_mach_arm_4T
; break;
1811 case F_ARM_5
: machine
= bfd_mach_arm_5
; break;
1818 #ifdef MC68KBCSMAGIC
1821 #ifdef APOLLOM68KMAGIC
1822 case APOLLOM68KMAGIC
:
1824 #ifdef LYNXCOFFMAGIC
1827 arch
= bfd_arch_m68k
;
1828 machine
= bfd_mach_m68020
;
1835 arch
= bfd_arch_m88k
;
1841 arch
= bfd_arch_z8k
;
1842 switch (internal_f
->f_flags
& F_MACHMASK
)
1845 machine
= bfd_mach_z8001
;
1848 machine
= bfd_mach_z8002
;
1857 arch
= bfd_arch_i860
;
1864 arch
= bfd_arch_i960
;
1865 switch (F_I960TYPE
& internal_f
->f_flags
)
1869 machine
= bfd_mach_i960_core
;
1872 machine
= bfd_mach_i960_kb_sb
;
1875 machine
= bfd_mach_i960_mc
;
1878 machine
= bfd_mach_i960_xa
;
1881 machine
= bfd_mach_i960_ca
;
1884 machine
= bfd_mach_i960_ka_sa
;
1887 machine
= bfd_mach_i960_jx
;
1890 machine
= bfd_mach_i960_hx
;
1904 if (xcoff_data (abfd
)->cputype
!= -1)
1905 cputype
= xcoff_data (abfd
)->cputype
& 0xff;
1908 /* We did not get a value from the a.out header. If the
1909 file has not been stripped, we may be able to get the
1910 architecture information from the first symbol, if it
1911 is a .file symbol. */
1912 if (obj_raw_syment_count (abfd
) == 0)
1917 struct internal_syment sym
;
1919 buf
= (bfd_byte
*) bfd_malloc (bfd_coff_symesz (abfd
));
1920 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1921 || (bfd_read (buf
, 1, bfd_coff_symesz (abfd
), abfd
)
1922 != bfd_coff_symesz (abfd
)))
1927 coff_swap_sym_in (abfd
, (PTR
) buf
, (PTR
) &sym
);
1928 if (sym
.n_sclass
== C_FILE
)
1929 cputype
= sym
.n_type
& 0xff;
1936 /* FIXME: We don't handle all cases here. */
1942 /* PowerPC Macs use the same magic numbers as RS/6000
1943 (because that's how they were bootstrapped originally),
1944 but they are always PowerPC architecture. */
1945 arch
= bfd_arch_powerpc
;
1948 arch
= bfd_arch_rs6000
;
1950 #endif /* POWERMAC */
1954 arch
= bfd_arch_powerpc
;
1957 case 2: /* 64 bit PowerPC */
1958 arch
= bfd_arch_powerpc
;
1962 arch
= bfd_arch_powerpc
;
1966 arch
= bfd_arch_rs6000
;
1976 arch
= bfd_arch_we32k
;
1983 arch
= bfd_arch_h8300
;
1984 machine
= bfd_mach_h8300
;
1985 /* !! FIXME this probably isn't the right place for this */
1986 abfd
->flags
|= BFD_IS_RELAXABLE
;
1992 arch
= bfd_arch_h8300
;
1993 machine
= bfd_mach_h8300h
;
1994 /* !! FIXME this probably isn't the right place for this */
1995 abfd
->flags
|= BFD_IS_RELAXABLE
;
2001 arch
= bfd_arch_h8300
;
2002 machine
= bfd_mach_h8300s
;
2003 /* !! FIXME this probably isn't the right place for this */
2004 abfd
->flags
|= BFD_IS_RELAXABLE
;
2008 #ifdef SH_ARCH_MAGIC_BIG
2009 case SH_ARCH_MAGIC_BIG
:
2010 case SH_ARCH_MAGIC_LITTLE
:
2012 case SH_ARCH_MAGIC_WINCE
:
2019 #ifdef MIPS_ARCH_MAGIC_WINCE
2020 case MIPS_ARCH_MAGIC_WINCE
:
2021 arch
= bfd_arch_mips
;
2028 arch
= bfd_arch_h8500
;
2035 #ifdef LYNXCOFFMAGIC
2038 arch
= bfd_arch_sparc
;
2045 arch
= bfd_arch_tic30
;
2050 #ifdef TICOFF_TARGET_ARCH
2051 /* this TI COFF section should be used by all new TI COFF v0 targets */
2053 arch
= TICOFF_TARGET_ARCH
;
2059 /* this TI COFF section should be used by all new TI COFF v1/2 targets */
2060 /* TI COFF1 and COFF2 use the target_id field to specify which arch */
2063 switch (internal_f
->f_target_id
)
2067 arch
= TICOFF_TARGET_ARCH
;
2071 arch
= bfd_arch_obscure
;
2072 (*_bfd_error_handler
)
2073 (_("Unrecognized TI COFF target id '0x%x'"),
2074 internal_f
->f_target_id
);
2080 #ifdef TIC80_ARCH_MAGIC
2081 case TIC80_ARCH_MAGIC
:
2082 arch
= bfd_arch_tic80
;
2088 arch
= bfd_arch_mcore
;
2091 default: /* Unreadable input file type */
2092 arch
= bfd_arch_obscure
;
2096 bfd_default_set_arch_mach (abfd
, arch
, machine
);
2100 #ifdef SYMNAME_IN_DEBUG
2102 static boolean symname_in_debug_hook
2103 PARAMS ((bfd
*, struct internal_syment
*));
2106 symname_in_debug_hook (abfd
, sym
)
2107 bfd
* abfd ATTRIBUTE_UNUSED
;
2108 struct internal_syment
*sym
;
2110 return SYMNAME_IN_DEBUG (sym
) ? true : false;
2115 #define symname_in_debug_hook \
2116 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2122 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2124 static boolean coff_pointerize_aux_hook
2125 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
2126 unsigned int, combined_entry_type
*));
2130 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
2131 bfd
*abfd ATTRIBUTE_UNUSED
;
2132 combined_entry_type
*table_base
;
2133 combined_entry_type
*symbol
;
2134 unsigned int indaux
;
2135 combined_entry_type
*aux
;
2137 int class = symbol
->u
.syment
.n_sclass
;
2139 if ((class == C_EXT
|| class == C_HIDEXT
)
2140 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2142 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) == XTY_LD
)
2144 aux
->u
.auxent
.x_csect
.x_scnlen
.p
=
2145 table_base
+ aux
->u
.auxent
.x_csect
.x_scnlen
.l
;
2146 aux
->fix_scnlen
= 1;
2149 /* Return true to indicate that the caller should not do any
2150 further work on this auxent. */
2154 /* Return false to indicate that this auxent should be handled by
2162 /* We don't want to pointerize bal entries. */
2164 static boolean coff_pointerize_aux_hook
2165 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
2166 unsigned int, combined_entry_type
*));
2170 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
2171 bfd
*abfd ATTRIBUTE_UNUSED
;
2172 combined_entry_type
*table_base ATTRIBUTE_UNUSED
;
2173 combined_entry_type
*symbol
;
2174 unsigned int indaux
;
2175 combined_entry_type
*aux ATTRIBUTE_UNUSED
;
2177 /* Return true if we don't want to pointerize this aux entry, which
2178 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2180 && (symbol
->u
.syment
.n_sclass
== C_LEAFPROC
2181 || symbol
->u
.syment
.n_sclass
== C_LEAFSTAT
2182 || symbol
->u
.syment
.n_sclass
== C_LEAFEXT
));
2187 #define coff_pointerize_aux_hook 0
2190 #endif /* ! RS6000COFF_C */
2192 /* Print an aux entry. This returns true if it has printed it. */
2194 static boolean coff_print_aux
2195 PARAMS ((bfd
*, FILE *, combined_entry_type
*, combined_entry_type
*,
2196 combined_entry_type
*, unsigned int));
2199 coff_print_aux (abfd
, file
, table_base
, symbol
, aux
, indaux
)
2200 bfd
*abfd ATTRIBUTE_UNUSED
;
2201 FILE *file ATTRIBUTE_UNUSED
;
2202 combined_entry_type
*table_base ATTRIBUTE_UNUSED
;
2203 combined_entry_type
*symbol ATTRIBUTE_UNUSED
;
2204 combined_entry_type
*aux ATTRIBUTE_UNUSED
;
2205 unsigned int indaux ATTRIBUTE_UNUSED
;
2208 if ((symbol
->u
.syment
.n_sclass
== C_EXT
2209 || symbol
->u
.syment
.n_sclass
== C_HIDEXT
)
2210 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2212 /* This is a csect entry. */
2213 fprintf (file
, "AUX ");
2214 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) != XTY_LD
)
2216 BFD_ASSERT (! aux
->fix_scnlen
);
2217 fprintf (file
, "val %5ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2221 fprintf (file
, "indx ");
2222 if (! aux
->fix_scnlen
)
2223 fprintf (file
, "%4ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2225 fprintf (file
, "%4ld",
2226 (long) (aux
->u
.auxent
.x_csect
.x_scnlen
.p
- table_base
));
2229 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2230 aux
->u
.auxent
.x_csect
.x_parmhash
,
2231 (unsigned int) aux
->u
.auxent
.x_csect
.x_snhash
,
2232 SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
),
2233 SMTYP_ALIGN (aux
->u
.auxent
.x_csect
.x_smtyp
),
2234 (unsigned int) aux
->u
.auxent
.x_csect
.x_smclas
,
2235 aux
->u
.auxent
.x_csect
.x_stab
,
2236 (unsigned int) aux
->u
.auxent
.x_csect
.x_snstab
);
2241 /* Return false to indicate that no special action was taken. */
2249 To write relocations, the back end steps though the
2250 canonical relocation table and create an
2251 @code{internal_reloc}. The symbol index to use is removed from
2252 the @code{offset} field in the symbol table supplied. The
2253 address comes directly from the sum of the section base
2254 address and the relocation offset; the type is dug directly
2255 from the howto field. Then the @code{internal_reloc} is
2256 swapped into the shape of an @code{external_reloc} and written
2263 static int compare_arelent_ptr
PARAMS ((const PTR
, const PTR
));
2265 /* AUX's ld wants relocations to be sorted */
2267 compare_arelent_ptr (x
, y
)
2271 const arelent
**a
= (const arelent
**) x
;
2272 const arelent
**b
= (const arelent
**) y
;
2273 bfd_size_type aadr
= (*a
)->address
;
2274 bfd_size_type badr
= (*b
)->address
;
2276 return (aadr
< badr
? -1 : badr
< aadr
? 1 : 0);
2279 #endif /* TARG_AUX */
2282 coff_write_relocs (abfd
, first_undef
)
2288 for (s
= abfd
->sections
; s
!= (asection
*) NULL
; s
= s
->next
)
2291 struct external_reloc dst
;
2297 /* sort relocations before we write them out */
2298 p
= (arelent
**) bfd_malloc (s
->reloc_count
* sizeof (arelent
*));
2299 if (p
== NULL
&& s
->reloc_count
> 0)
2301 memcpy (p
, s
->orelocation
, s
->reloc_count
* sizeof (arelent
*));
2302 qsort (p
, s
->reloc_count
, sizeof (arelent
*), compare_arelent_ptr
);
2305 if (bfd_seek (abfd
, s
->rel_filepos
, SEEK_SET
) != 0)
2307 for (i
= 0; i
< s
->reloc_count
; i
++)
2309 struct internal_reloc n
;
2311 memset ((PTR
) & n
, 0, sizeof (n
));
2313 /* Now we've renumbered the symbols we know where the
2314 undefined symbols live in the table. Check the reloc
2315 entries for symbols who's output bfd isn't the right one.
2316 This is because the symbol was undefined (which means
2317 that all the pointers are never made to point to the same
2318 place). This is a bad thing,'cause the symbols attached
2319 to the output bfd are indexed, so that the relocation
2320 entries know which symbol index they point to. So we
2321 have to look up the output symbol here. */
2323 if (q
->sym_ptr_ptr
[0]->the_bfd
!= abfd
)
2326 const char *sname
= q
->sym_ptr_ptr
[0]->name
;
2327 asymbol
**outsyms
= abfd
->outsymbols
;
2328 for (i
= first_undef
; outsyms
[i
]; i
++)
2330 const char *intable
= outsyms
[i
]->name
;
2331 if (strcmp (intable
, sname
) == 0) {
2332 /* got a hit, so repoint the reloc */
2333 q
->sym_ptr_ptr
= outsyms
+ i
;
2339 n
.r_vaddr
= q
->address
+ s
->vma
;
2342 /* The 29k const/consth reloc pair is a real kludge. The consth
2343 part doesn't have a symbol; it has an offset. So rebuilt
2345 if (q
->howto
->type
== R_IHCONST
)
2346 n
.r_symndx
= q
->addend
;
2351 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2352 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q
,s
))
2354 if (q
->sym_ptr_ptr
== bfd_abs_section_ptr
->symbol_ptr_ptr
)
2356 /* This is a relocation relative to the absolute symbol. */
2360 n
.r_symndx
= get_index ((*(q
->sym_ptr_ptr
)));
2361 /* Take notice if the symbol reloc points to a symbol
2362 we don't have in our symbol table. What should we
2364 if (n
.r_symndx
> obj_conv_table_size (abfd
))
2369 #ifdef SWAP_OUT_RELOC_OFFSET
2370 n
.r_offset
= q
->addend
;
2374 /* Work out reloc type from what is required */
2375 SELECT_RELOC (n
, q
->howto
);
2377 n
.r_type
= q
->howto
->type
;
2379 coff_swap_reloc_out (abfd
, &n
, &dst
);
2380 if (bfd_write ((PTR
) & dst
, 1, bfd_coff_relsz (abfd
), abfd
)
2381 != bfd_coff_relsz (abfd
))
2394 /* Set flags and magic number of a coff file from architecture and machine
2395 type. Result is true if we can represent the arch&type, false if not. */
2398 coff_set_flags (abfd
, magicp
, flagsp
)
2400 unsigned int *magicp ATTRIBUTE_UNUSED
;
2401 unsigned short *flagsp ATTRIBUTE_UNUSED
;
2403 switch (bfd_get_arch (abfd
))
2408 switch (bfd_get_mach (abfd
))
2410 case bfd_mach_z8001
:
2413 case bfd_mach_z8002
:
2427 *magicp
= I960ROMAGIC
;
2429 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2430 I960RWMAGIC); FIXME???
2432 switch (bfd_get_mach (abfd
))
2434 case bfd_mach_i960_core
:
2437 case bfd_mach_i960_kb_sb
:
2440 case bfd_mach_i960_mc
:
2443 case bfd_mach_i960_xa
:
2446 case bfd_mach_i960_ca
:
2449 case bfd_mach_i960_ka_sa
:
2452 case bfd_mach_i960_jx
:
2455 case bfd_mach_i960_hx
:
2468 case bfd_arch_tic30
:
2469 *magicp
= TIC30MAGIC
;
2473 #ifdef TICOFF_DEFAULT_MAGIC
2474 case TICOFF_TARGET_ARCH
:
2475 /* if there's no indication of which version we want, use the default */
2477 *magicp
= TICOFF_DEFAULT_MAGIC
;
2480 /* we may want to output in a different COFF version */
2481 switch (abfd
->xvec
->name
[4])
2484 *magicp
= TICOFF0MAGIC
;
2487 *magicp
= TICOFF1MAGIC
;
2490 *magicp
= TICOFF2MAGIC
;
2499 #ifdef TIC80_ARCH_MAGIC
2500 case bfd_arch_tic80
:
2501 *magicp
= TIC80_ARCH_MAGIC
;
2507 * magicp
= ARMPEMAGIC
;
2509 * magicp
= ARMMAGIC
;
2512 if (APCS_SET (abfd
))
2514 if (APCS_26_FLAG (abfd
))
2515 * flagsp
|= F_APCS26
;
2517 if (APCS_FLOAT_FLAG (abfd
))
2518 * flagsp
|= F_APCS_FLOAT
;
2520 if (PIC_FLAG (abfd
))
2523 if (INTERWORK_SET (abfd
) && INTERWORK_FLAG (abfd
))
2524 * flagsp
|= F_INTERWORK
;
2525 switch (bfd_get_mach (abfd
))
2527 case bfd_mach_arm_2
: * flagsp
|= F_ARM_2
; break;
2528 case bfd_mach_arm_2a
: * flagsp
|= F_ARM_2a
; break;
2529 case bfd_mach_arm_3
: * flagsp
|= F_ARM_3
; break;
2530 case bfd_mach_arm_3M
: * flagsp
|= F_ARM_3M
; break;
2531 case bfd_mach_arm_4
: * flagsp
|= F_ARM_4
; break;
2532 case bfd_mach_arm_4T
: * flagsp
|= F_ARM_4T
; break;
2533 case bfd_mach_arm_5
: * flagsp
|= F_ARM_5
; break;
2534 case bfd_mach_arm_5T
: * flagsp
|= F_ARM_5
; break; /* XXX - we do not have an F_ARM_5T */
2539 case bfd_arch_powerpc
:
2546 *magicp
= I386MAGIC
;
2548 /* Just overwrite the usual value if we're doing Lynx. */
2549 *magicp
= LYNXCOFFMAGIC
;
2556 *magicp
= I860MAGIC
;
2562 #ifdef APOLLOM68KMAGIC
2563 *magicp
= APOLLO_COFF_VERSION_NUMBER
;
2565 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2566 #ifdef NAMES_HAVE_UNDERSCORE
2567 *magicp
= MC68KBCSMAGIC
;
2569 *magicp
= MC68MAGIC
;
2573 /* Just overwrite the usual value if we're doing Lynx. */
2574 *magicp
= LYNXCOFFMAGIC
;
2582 *magicp
= MC88OMAGIC
;
2587 case bfd_arch_h8300
:
2588 switch (bfd_get_mach (abfd
))
2590 case bfd_mach_h8300
:
2591 *magicp
= H8300MAGIC
;
2593 case bfd_mach_h8300h
:
2594 *magicp
= H8300HMAGIC
;
2596 case bfd_mach_h8300s
:
2597 *magicp
= H8300SMAGIC
;
2603 #ifdef SH_ARCH_MAGIC_BIG
2605 #ifdef COFF_IMAGE_WITH_PE
2606 *magicp
= SH_ARCH_MAGIC_WINCE
;
2608 if (bfd_big_endian (abfd
))
2609 *magicp
= SH_ARCH_MAGIC_BIG
;
2611 *magicp
= SH_ARCH_MAGIC_LITTLE
;
2617 #ifdef MIPS_ARCH_MAGIC_WINCE
2619 *magicp
= MIPS_ARCH_MAGIC_WINCE
;
2625 case bfd_arch_sparc
:
2626 *magicp
= SPARCMAGIC
;
2628 /* Just overwrite the usual value if we're doing Lynx. */
2629 *magicp
= LYNXCOFFMAGIC
;
2636 case bfd_arch_h8500
:
2637 *magicp
= H8500MAGIC
;
2641 #ifdef A29K_MAGIC_BIG
2643 if (bfd_big_endian (abfd
))
2644 *magicp
= A29K_MAGIC_BIG
;
2646 *magicp
= A29K_MAGIC_LITTLE
;
2652 case bfd_arch_we32k
:
2653 *magicp
= WE32KMAGIC
;
2659 case bfd_arch_rs6000
:
2661 case bfd_arch_powerpc
:
2663 *magicp
= U802TOCMAGIC
;
2669 case bfd_arch_mcore
:
2670 * magicp
= MCOREMAGIC
;
2674 default: /* Unknown architecture */
2675 /* return false; -- fall through to "return false" below, to avoid
2676 "statement never reached" errors on the one below. */
2685 coff_set_arch_mach (abfd
, arch
, machine
)
2687 enum bfd_architecture arch
;
2688 unsigned long machine
;
2691 unsigned short dummy2
;
2693 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
2696 if (arch
!= bfd_arch_unknown
&&
2697 coff_set_flags (abfd
, &dummy1
, &dummy2
) != true)
2698 return false; /* We can't represent this type */
2700 return true; /* We're easy ... */
2703 #ifdef COFF_IMAGE_WITH_PE
2705 /* This is used to sort sections by VMA, as required by PE image
2708 static int sort_by_secaddr
PARAMS ((const PTR
, const PTR
));
2711 sort_by_secaddr (arg1
, arg2
)
2715 const asection
*a
= *(const asection
**) arg1
;
2716 const asection
*b
= *(const asection
**) arg2
;
2718 if (a
->vma
< b
->vma
)
2720 else if (a
->vma
> b
->vma
)
2726 #endif /* COFF_IMAGE_WITH_PE */
2728 /* Calculate the file position for each section. */
2731 #define ALIGN_SECTIONS_IN_FILE
2733 #if defined(TIC80COFF) || defined(TICOFF)
2734 #undef ALIGN_SECTIONS_IN_FILE
2738 coff_compute_section_file_positions (abfd
)
2742 asection
*previous
= (asection
*) NULL
;
2743 file_ptr sofar
= bfd_coff_filhsz (abfd
);
2744 boolean align_adjust
;
2745 #ifdef ALIGN_SECTIONS_IN_FILE
2750 /* On XCOFF, if we have symbols, set up the .debug section. */
2751 if (bfd_get_symcount (abfd
) > 0)
2754 bfd_size_type i
, symcount
;
2758 symcount
= bfd_get_symcount (abfd
);
2759 for (symp
= abfd
->outsymbols
, i
= 0; i
< symcount
; symp
++, i
++)
2761 coff_symbol_type
*cf
;
2763 cf
= coff_symbol_from (abfd
, *symp
);
2765 && cf
->native
!= NULL
2766 && SYMNAME_IN_DEBUG (&cf
->native
->u
.syment
))
2770 len
= strlen (bfd_asymbol_name (*symp
));
2779 dsec
= bfd_make_section_old_way (abfd
, ".debug");
2782 dsec
->_raw_size
= sz
;
2783 dsec
->flags
|= SEC_HAS_CONTENTS
;
2788 #ifdef COFF_IMAGE_WITH_PE
2790 if (coff_data (abfd
)->link_info
)
2792 page_size
= pe_data (abfd
)->pe_opthdr
.FileAlignment
;
2795 page_size
= PE_DEF_FILE_ALIGNMENT
;
2797 #ifdef COFF_PAGE_SIZE
2798 int page_size
= COFF_PAGE_SIZE
;
2802 if (bfd_get_start_address (abfd
))
2804 /* A start address may have been added to the original file. In this
2805 case it will need an optional header to record it. */
2806 abfd
->flags
|= EXEC_P
;
2809 if (abfd
->flags
& EXEC_P
)
2810 sofar
+= bfd_coff_aoutsz (abfd
);
2812 else if (xcoff_data (abfd
)->full_aouthdr
)
2813 sofar
+= bfd_coff_aoutsz (abfd
);
2815 sofar
+= SMALL_AOUTSZ
;
2818 sofar
+= abfd
->section_count
* bfd_coff_scnhsz (abfd
);
2821 /* XCOFF handles overflows in the reloc and line number count fields
2822 by allocating a new section header to hold the correct counts. */
2823 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2824 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2825 sofar
+= bfd_coff_scnhsz (abfd
);
2828 #ifdef COFF_IMAGE_WITH_PE
2830 /* PE requires the sections to be in memory order when listed in
2831 the section headers. It also does not like empty loadable
2832 sections. The sections apparently do not have to be in the
2833 right order in the image file itself, but we do need to get the
2834 target_index values right. */
2837 asection
**section_list
;
2842 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2845 /* We allocate an extra cell to simplify the final loop. */
2846 section_list
= bfd_malloc (sizeof (struct asection
*) * (count
+ 1));
2847 if (section_list
== NULL
)
2851 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2853 section_list
[i
] = current
;
2856 section_list
[i
] = NULL
;
2858 qsort (section_list
, count
, sizeof (asection
*), sort_by_secaddr
);
2860 /* Rethread the linked list into sorted order; at the same time,
2861 assign target_index values. */
2863 abfd
->sections
= section_list
[0];
2864 for (i
= 0; i
< count
; i
++)
2866 current
= section_list
[i
];
2867 current
->next
= section_list
[i
+ 1];
2869 /* Later, if the section has zero size, we'll be throwing it
2870 away, so we don't want to number it now. Note that having
2871 a zero size and having real contents are different
2872 concepts: .bss has no contents, but (usually) non-zero
2874 if (current
->_raw_size
== 0)
2876 /* Discard. However, it still might have (valid) symbols
2877 in it, so arbitrarily set it to section 1 (indexing is
2878 1-based here; usually .text). __end__ and other
2879 contents of .endsection really have this happen.
2880 FIXME: This seems somewhat dubious. */
2881 current
->target_index
= 1;
2884 current
->target_index
= target_index
++;
2887 free (section_list
);
2889 #else /* ! COFF_IMAGE_WITH_PE */
2891 /* Set the target_index field. */
2895 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2896 current
->target_index
= target_index
++;
2898 #endif /* ! COFF_IMAGE_WITH_PE */
2900 align_adjust
= false;
2901 for (current
= abfd
->sections
;
2902 current
!= (asection
*) NULL
;
2903 current
= current
->next
)
2905 #ifdef COFF_IMAGE_WITH_PE
2906 /* With PE we have to pad each section to be a multiple of its
2907 page size too, and remember both sizes. */
2908 if (coff_section_data (abfd
, current
) == NULL
)
2910 current
->used_by_bfd
=
2911 (PTR
) bfd_zalloc (abfd
, sizeof (struct coff_section_tdata
));
2912 if (current
->used_by_bfd
== NULL
)
2915 if (pei_section_data (abfd
, current
) == NULL
)
2917 coff_section_data (abfd
, current
)->tdata
=
2918 (PTR
) bfd_zalloc (abfd
, sizeof (struct pei_section_tdata
));
2919 if (coff_section_data (abfd
, current
)->tdata
== NULL
)
2922 if (pei_section_data (abfd
, current
)->virt_size
== 0)
2923 pei_section_data (abfd
, current
)->virt_size
= current
->_raw_size
;
2926 /* Only deal with sections which have contents. */
2927 if (!(current
->flags
& SEC_HAS_CONTENTS
))
2930 #ifdef COFF_IMAGE_WITH_PE
2931 /* Make sure we skip empty sections in a PE image. */
2932 if (current
->_raw_size
== 0)
2936 /* Align the sections in the file to the same boundary on
2937 which they are aligned in virtual memory. I960 doesn't
2938 do this (FIXME) so we can stay in sync with Intel. 960
2939 doesn't yet page from files... */
2940 #ifdef ALIGN_SECTIONS_IN_FILE
2941 if ((abfd
->flags
& EXEC_P
) != 0)
2943 /* make sure this section is aligned on the right boundary - by
2944 padding the previous section up if necessary */
2947 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
2948 if (previous
!= (asection
*) NULL
)
2950 previous
->_raw_size
+= sofar
- old_sofar
;
2956 /* In demand paged files the low order bits of the file offset
2957 must match the low order bits of the virtual address. */
2958 #ifdef COFF_PAGE_SIZE
2959 if ((abfd
->flags
& D_PAGED
) != 0
2960 && (current
->flags
& SEC_ALLOC
) != 0)
2961 sofar
+= (current
->vma
- sofar
) % page_size
;
2963 current
->filepos
= sofar
;
2965 #ifdef COFF_IMAGE_WITH_PE
2966 /* Set the padded size. */
2967 current
->_raw_size
= (current
->_raw_size
+ page_size
-1) & -page_size
;
2970 sofar
+= current
->_raw_size
;
2972 #ifdef ALIGN_SECTIONS_IN_FILE
2973 /* make sure that this section is of the right size too */
2974 if ((abfd
->flags
& EXEC_P
) == 0)
2976 bfd_size_type old_size
;
2978 old_size
= current
->_raw_size
;
2979 current
->_raw_size
= BFD_ALIGN (current
->_raw_size
,
2980 1 << current
->alignment_power
);
2981 align_adjust
= current
->_raw_size
!= old_size
;
2982 sofar
+= current
->_raw_size
- old_size
;
2987 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
2988 align_adjust
= sofar
!= old_sofar
;
2989 current
->_raw_size
+= sofar
- old_sofar
;
2993 #ifdef COFF_IMAGE_WITH_PE
2994 /* For PE we need to make sure we pad out to the aligned
2995 _raw_size, in case the caller only writes out data to the
2996 unaligned _raw_size. */
2997 if (pei_section_data (abfd
, current
)->virt_size
< current
->_raw_size
)
2998 align_adjust
= true;
3002 /* Force .lib sections to start at zero. The vma is then
3003 incremented in coff_set_section_contents. This is right for
3005 if (strcmp (current
->name
, _LIB
) == 0)
3006 bfd_set_section_vma (abfd
, current
, 0);
3012 /* It is now safe to write to the output file. If we needed an
3013 alignment adjustment for the last section, then make sure that
3014 there is a byte at offset sofar. If there are no symbols and no
3015 relocs, then nothing follows the last section. If we don't force
3016 the last byte out, then the file may appear to be truncated. */
3022 if (bfd_seek (abfd
, sofar
- 1, SEEK_SET
) != 0
3023 || bfd_write (&b
, 1, 1, abfd
) != 1)
3027 /* Make sure the relocations are aligned. We don't need to make
3028 sure that this byte exists, because it will only matter if there
3029 really are relocs. */
3030 sofar
= BFD_ALIGN (sofar
, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER
);
3032 obj_relocbase (abfd
) = sofar
;
3033 abfd
->output_has_begun
= true;
3040 /* This can never work, because it is called too late--after the
3041 section positions have been set. I can't figure out what it is
3042 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3044 /* If .file, .text, .data, .bss symbols are missing, add them. */
3045 /* @@ Should we only be adding missing symbols, or overriding the aux
3046 values for existing section symbols? */
3048 coff_add_missing_symbols (abfd
)
3051 unsigned int nsyms
= bfd_get_symcount (abfd
);
3052 asymbol
**sympp
= abfd
->outsymbols
;
3055 int need_text
= 1, need_data
= 1, need_bss
= 1, need_file
= 1;
3057 for (i
= 0; i
< nsyms
; i
++)
3059 coff_symbol_type
*csym
= coff_symbol_from (abfd
, sympp
[i
]);
3063 /* only do this if there is a coff representation of the input
3065 if (csym
->native
&& csym
->native
->u
.syment
.n_sclass
== C_FILE
)
3070 name
= csym
->symbol
.name
;
3073 if (!strcmp (name
, _TEXT
))
3076 else if (!strcmp (name
, ".wtext"))
3079 else if (!strcmp (name
, _DATA
))
3081 else if (!strcmp (name
, _BSS
))
3085 /* Now i == bfd_get_symcount (abfd). */
3086 /* @@ For now, don't deal with .file symbol. */
3089 if (!need_text
&& !need_data
&& !need_bss
&& !need_file
)
3091 nsyms
+= need_text
+ need_data
+ need_bss
+ need_file
;
3092 sympp2
= (asymbol
**) bfd_alloc (abfd
, nsyms
* sizeof (asymbol
*));
3095 memcpy (sympp2
, sympp
, i
* sizeof (asymbol
*));
3098 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3102 sympp2
[i
++] = coff_section_symbol (abfd
, _TEXT
);
3104 sympp2
[i
++] = coff_section_symbol (abfd
, _DATA
);
3106 sympp2
[i
++] = coff_section_symbol (abfd
, _BSS
);
3107 BFD_ASSERT (i
== nsyms
);
3108 bfd_set_symtab (abfd
, sympp2
, nsyms
);
3117 coff_write_object_contents (abfd
)
3121 boolean hasrelocs
= false;
3122 boolean haslinno
= false;
3123 boolean hasdebug
= false;
3125 file_ptr reloc_base
;
3126 file_ptr lineno_base
;
3128 unsigned long reloc_size
= 0;
3129 unsigned long lnno_size
= 0;
3130 boolean long_section_names
;
3131 asection
*text_sec
= NULL
;
3132 asection
*data_sec
= NULL
;
3133 asection
*bss_sec
= NULL
;
3134 struct internal_filehdr internal_f
;
3135 struct internal_aouthdr internal_a
;
3136 #ifdef COFF_LONG_SECTION_NAMES
3137 size_t string_size
= STRING_SIZE_SIZE
;
3140 bfd_set_error (bfd_error_system_call
);
3142 /* Make a pass through the symbol table to count line number entries and
3143 put them into the correct asections */
3145 lnno_size
= coff_count_linenumbers (abfd
) * bfd_coff_linesz (abfd
);
3147 if (abfd
->output_has_begun
== false)
3149 if (! coff_compute_section_file_positions (abfd
))
3153 reloc_base
= obj_relocbase (abfd
);
3155 /* Work out the size of the reloc and linno areas */
3157 for (current
= abfd
->sections
; current
!= NULL
; current
=
3159 reloc_size
+= current
->reloc_count
* bfd_coff_relsz (abfd
);
3161 lineno_base
= reloc_base
+ reloc_size
;
3162 sym_base
= lineno_base
+ lnno_size
;
3164 /* Indicate in each section->line_filepos its actual file address */
3165 for (current
= abfd
->sections
; current
!= NULL
; current
=
3168 if (current
->lineno_count
)
3170 current
->line_filepos
= lineno_base
;
3171 current
->moving_line_filepos
= lineno_base
;
3172 lineno_base
+= current
->lineno_count
* bfd_coff_linesz (abfd
);
3176 current
->line_filepos
= 0;
3178 if (current
->reloc_count
)
3180 current
->rel_filepos
= reloc_base
;
3181 reloc_base
+= current
->reloc_count
* bfd_coff_relsz (abfd
);
3185 current
->rel_filepos
= 0;
3189 /* Write section headers to the file. */
3190 internal_f
.f_nscns
= 0;
3192 if ((abfd
->flags
& EXEC_P
) != 0)
3193 scn_base
= bfd_coff_filhsz (abfd
) + bfd_coff_aoutsz (abfd
);
3196 scn_base
= bfd_coff_filhsz (abfd
);
3198 if (xcoff_data (abfd
)->full_aouthdr
)
3199 scn_base
+= bfd_coff_aoutsz (abfd
);
3201 scn_base
+= SMALL_AOUTSZ
;
3205 if (bfd_seek (abfd
, scn_base
, SEEK_SET
) != 0)
3208 long_section_names
= false;
3209 for (current
= abfd
->sections
;
3211 current
= current
->next
)
3213 struct internal_scnhdr section
;
3214 boolean is_reloc_section
= false;
3216 #ifdef COFF_IMAGE_WITH_PE
3217 if (strcmp (current
->name
, ".reloc") == 0)
3219 is_reloc_section
= true;
3221 pe_data (abfd
)->has_reloc_section
= 1;
3225 internal_f
.f_nscns
++;
3227 strncpy (section
.s_name
, current
->name
, SCNNMLEN
);
3229 #ifdef COFF_LONG_SECTION_NAMES
3230 /* Handle long section names as in PE. This must be compatible
3231 with the code in coff_write_symbols and _bfd_coff_final_link. */
3235 len
= strlen (current
->name
);
3238 memset (section
.s_name
, 0, SCNNMLEN
);
3239 sprintf (section
.s_name
, "/%lu", (unsigned long) string_size
);
3240 string_size
+= len
+ 1;
3241 long_section_names
= true;
3247 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3248 Ian Taylor <ian@cygnus.com>. */
3249 if (strcmp (current
->name
, _LIB
) == 0)
3250 section
.s_vaddr
= 0;
3253 section
.s_vaddr
= current
->vma
;
3254 section
.s_paddr
= current
->lma
;
3255 section
.s_size
= current
->_raw_size
;
3256 #ifdef coff_get_section_load_page
3257 section
.s_page
= coff_get_section_load_page (current
);
3261 section
.s_paddr
= 0;
3263 #ifdef COFF_IMAGE_WITH_PE
3264 /* Reminder: s_paddr holds the virtual size of the section. */
3265 if (coff_section_data (abfd
, current
) != NULL
3266 && pei_section_data (abfd
, current
) != NULL
)
3267 section
.s_paddr
= pei_section_data (abfd
, current
)->virt_size
;
3269 section
.s_paddr
= 0;
3273 If this section has no size or is unloadable then the scnptr
3276 if (current
->_raw_size
== 0 ||
3277 (current
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
3279 section
.s_scnptr
= 0;
3283 section
.s_scnptr
= current
->filepos
;
3285 section
.s_relptr
= current
->rel_filepos
;
3286 section
.s_lnnoptr
= current
->line_filepos
;
3287 section
.s_nreloc
= current
->reloc_count
;
3288 section
.s_nlnno
= current
->lineno_count
;
3289 #ifndef COFF_IMAGE_WITH_PE
3290 /* In PEI, relocs come in the .reloc section. */
3291 if (current
->reloc_count
!= 0)
3294 if (current
->lineno_count
!= 0)
3296 if ((current
->flags
& SEC_DEBUGGING
) != 0
3297 && ! is_reloc_section
)
3301 /* Indicate the use of an XCOFF overflow section header. */
3302 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3304 section
.s_nreloc
= 0xffff;
3305 section
.s_nlnno
= 0xffff;
3309 section
.s_flags
= sec_to_styp_flags (current
->name
, current
->flags
);
3311 if (!strcmp (current
->name
, _TEXT
))
3315 else if (!strcmp (current
->name
, _DATA
))
3319 else if (!strcmp (current
->name
, _BSS
))
3325 section
.s_align
= (current
->alignment_power
3326 ? 1 << current
->alignment_power
3330 /* TI COFF puts the alignment power in bits 8-11 of the flags */
3331 section
.s_flags
|= (current
->alignment_power
& 0xF) << 8;
3333 #ifdef COFF_ENCODE_ALIGNMENT
3334 COFF_ENCODE_ALIGNMENT(section
, current
->alignment_power
);
3337 #ifdef COFF_IMAGE_WITH_PE
3338 /* Suppress output of the sections if they are null. ld
3339 includes the bss and data sections even if there is no size
3340 assigned to them. NT loader doesn't like it if these section
3341 headers are included if the sections themselves are not
3342 needed. See also coff_compute_section_file_positions. */
3343 if (section
.s_size
== 0)
3344 internal_f
.f_nscns
--;
3349 if (coff_swap_scnhdr_out (abfd
, §ion
, &buff
) == 0
3350 || bfd_write ((PTR
) (&buff
), 1, bfd_coff_scnhsz (abfd
), abfd
)
3351 != bfd_coff_scnhsz (abfd
))
3356 /* PE stores COMDAT section information in the symbol table. If
3357 this section is supposed to have some COMDAT info, track down
3358 the symbol in the symbol table and modify it. */
3359 if ((current
->flags
& SEC_LINK_ONCE
) != 0)
3361 unsigned int i
, count
;
3363 coff_symbol_type
*csym
= NULL
;
3367 count
= bfd_get_symcount (abfd
);
3368 for (i
= 0, psym
= abfd
->outsymbols
; i
< count
; i
++, psym
++)
3370 if ((*psym
)->section
!= current
)
3373 /* Remember the location of the first symbol in this
3375 if (psymsec
== NULL
)
3378 /* See if this is the section symbol. */
3379 if (strcmp ((*psym
)->name
, current
->name
) == 0)
3381 csym
= coff_symbol_from (abfd
, *psym
);
3383 || csym
->native
== NULL
3384 || csym
->native
->u
.syment
.n_numaux
< 1
3385 || csym
->native
->u
.syment
.n_sclass
!= C_STAT
3386 || csym
->native
->u
.syment
.n_type
!= T_NULL
)
3389 /* Here *PSYM is the section symbol for CURRENT. */
3396 Note that we might not if we're converting the file from
3397 some other object file format. */
3400 combined_entry_type
*aux
;
3402 /* We don't touch the x_checksum field. The
3403 x_associated field is not currently supported. */
3405 aux
= csym
->native
+ 1;
3406 switch (current
->flags
& SEC_LINK_DUPLICATES
)
3408 case SEC_LINK_DUPLICATES_DISCARD
:
3409 aux
->u
.auxent
.x_scn
.x_comdat
= IMAGE_COMDAT_SELECT_ANY
;
3412 case SEC_LINK_DUPLICATES_ONE_ONLY
:
3413 aux
->u
.auxent
.x_scn
.x_comdat
=
3414 IMAGE_COMDAT_SELECT_NODUPLICATES
;
3417 case SEC_LINK_DUPLICATES_SAME_SIZE
:
3418 aux
->u
.auxent
.x_scn
.x_comdat
=
3419 IMAGE_COMDAT_SELECT_SAME_SIZE
;
3422 case SEC_LINK_DUPLICATES_SAME_CONTENTS
:
3423 aux
->u
.auxent
.x_scn
.x_comdat
=
3424 IMAGE_COMDAT_SELECT_EXACT_MATCH
;
3428 /* The COMDAT symbol must be the first symbol from this
3429 section in the symbol table. In order to make this
3430 work, we move the COMDAT symbol before the first
3431 symbol we found in the search above. It's OK to
3432 rearrange the symbol table at this point, because
3433 coff_renumber_symbols is going to rearrange it
3434 further and fix up all the aux entries. */
3435 if (psym
!= psymsec
)
3441 for (pcopy
= psym
; pcopy
> psymsec
; pcopy
--)
3442 pcopy
[0] = pcopy
[-1];
3447 #endif /* COFF_WITH_PE */
3451 /* XCOFF handles overflows in the reloc and line number count fields
3452 by creating a new section header to hold the correct values. */
3453 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
3455 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3457 struct internal_scnhdr scnhdr
;
3460 internal_f
.f_nscns
++;
3461 strncpy (&(scnhdr
.s_name
[0]), current
->name
, 8);
3462 scnhdr
.s_paddr
= current
->reloc_count
;
3463 scnhdr
.s_vaddr
= current
->lineno_count
;
3465 scnhdr
.s_scnptr
= 0;
3466 scnhdr
.s_relptr
= current
->rel_filepos
;
3467 scnhdr
.s_lnnoptr
= current
->line_filepos
;
3468 scnhdr
.s_nreloc
= current
->target_index
;
3469 scnhdr
.s_nlnno
= current
->target_index
;
3470 scnhdr
.s_flags
= STYP_OVRFLO
;
3471 if (coff_swap_scnhdr_out (abfd
, &scnhdr
, &buff
) == 0
3472 || bfd_write ((PTR
) &buff
, 1, bfd_coff_scnhsz (abfd
), abfd
)
3473 != bfd_coff_scnhsz (abfd
))
3479 /* OK, now set up the filehdr... */
3481 /* Don't include the internal abs section in the section count */
3484 We will NOT put a fucking timestamp in the header here. Every time you
3485 put it back, I will come in and take it out again. I'm sorry. This
3486 field does not belong here. We fill it with a 0 so it compares the
3487 same but is not a reasonable time. -- gnu@cygnus.com
3489 internal_f
.f_timdat
= 0;
3491 internal_f
.f_flags
= 0;
3493 if (abfd
->flags
& EXEC_P
)
3494 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
3497 internal_f
.f_opthdr
= 0;
3499 if (xcoff_data (abfd
)->full_aouthdr
)
3500 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
3502 internal_f
.f_opthdr
= SMALL_AOUTSZ
;
3507 internal_f
.f_flags
|= F_RELFLG
;
3509 internal_f
.f_flags
|= F_LNNO
;
3510 if (abfd
->flags
& EXEC_P
)
3511 internal_f
.f_flags
|= F_EXEC
;
3512 #ifdef COFF_IMAGE_WITH_PE
3514 internal_f
.f_flags
|= IMAGE_FILE_DEBUG_STRIPPED
;
3517 #ifndef COFF_WITH_PE
3518 if (bfd_little_endian (abfd
))
3519 internal_f
.f_flags
|= F_AR32WR
;
3521 internal_f
.f_flags
|= F_AR32W
;
3525 /* target id is used in TI COFF v1 and later; COFF0 won't use this field,
3526 but it doesn't hurt to set it internally */
3527 internal_f
.f_target_id
= TI_TARGET_ID
;
3529 #ifdef TIC80_TARGET_ID
3530 internal_f
.f_target_id
= TIC80_TARGET_ID
;
3534 FIXME, should do something about the other byte orders and
3539 if ((abfd
->flags
& DYNAMIC
) != 0)
3540 internal_f
.f_flags
|= F_SHROBJ
;
3541 if (bfd_get_section_by_name (abfd
, _LOADER
) != NULL
)
3542 internal_f
.f_flags
|= F_DYNLOAD
;
3545 memset (&internal_a
, 0, sizeof internal_a
);
3547 /* Set up architecture-dependent stuff */
3550 unsigned int magic
= 0;
3551 unsigned short flags
= 0;
3552 coff_set_flags (abfd
, &magic
, &flags
);
3553 internal_f
.f_magic
= magic
;
3554 internal_f
.f_flags
|= flags
;
3555 /* ...and the "opt"hdr... */
3558 #ifdef ULTRA3 /* NYU's machine */
3559 /* FIXME: This is a bogus check. I really want to see if there
3560 * is a .shbss or a .shdata section, if so then set the magic
3561 * number to indicate a shared data executable.
3563 if (internal_f
.f_nscns
>= 7)
3564 internal_a
.magic
= SHMAGIC
; /* Shared magic */
3567 internal_a
.magic
= NMAGIC
; /* Assume separate i/d */
3568 #define __A_MAGIC_SET__
3570 #ifdef TICOFF_AOUT_MAGIC
3571 internal_a
.magic
= TICOFF_AOUT_MAGIC
;
3572 #define __A_MAGIC_SET__
3575 internal_a
.magic
= TIC80_ARCH_MAGIC
;
3576 #define __A_MAGIC_SET__
3579 /* FIXME: What are the a.out magic numbers for the i860? */
3580 internal_a
.magic
= 0;
3581 #define __A_MAGIC_SET__
3584 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
3585 #define __A_MAGIC_SET__
3588 #define __A_MAGIC_SET__
3589 internal_a
.magic
= PAGEMAGICBCS
;
3593 #define __A_MAGIC_SET__
3594 internal_a
.magic
= APOLLO_COFF_VERSION_NUMBER
;
3597 #if defined(M68) || defined(WE32K) || defined(M68K)
3598 #define __A_MAGIC_SET__
3600 internal_a
.magic
= LYNXCOFFMAGIC
;
3602 #if defined(TARG_AUX)
3603 internal_a
.magic
= (abfd
->flags
& D_PAGED
? PAGEMAGICPEXECPAGED
:
3604 abfd
->flags
& WP_TEXT
? PAGEMAGICPEXECSWAPPED
:
3605 PAGEMAGICEXECSWAPPED
);
3607 #if defined (PAGEMAGICPEXECPAGED)
3608 internal_a
.magic
= PAGEMAGICPEXECPAGED
;
3610 #endif /* TARG_AUX */
3612 #endif /* M68 || WE32K || M68K */
3615 #define __A_MAGIC_SET__
3616 internal_a
.magic
= ZMAGIC
;
3620 #define __A_MAGIC_SET__
3621 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
3624 #if defined MCORE_PE
3625 #define __A_MAGIC_SET__
3626 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
3630 #define __A_MAGIC_SET__
3632 internal_a
.magic
= LYNXCOFFMAGIC
;
3634 internal_a
.magic
= ZMAGIC
;
3639 #define __A_MAGIC_SET__
3641 internal_a
.magic
= LYNXCOFFMAGIC
;
3646 #define __A_MAGIC_SET__
3647 internal_a
.magic
= (abfd
->flags
& D_PAGED
) ? RS6K_AOUTHDR_ZMAGIC
:
3648 (abfd
->flags
& WP_TEXT
) ? RS6K_AOUTHDR_NMAGIC
:
3649 RS6K_AOUTHDR_OMAGIC
;
3652 #if defined(SH) && defined(COFF_WITH_PE)
3653 #define __A_MAGIC_SET__
3654 internal_a
.magic
= SH_PE_MAGIC
;
3657 #if defined(MIPS) && defined(COFF_WITH_PE)
3658 #define __A_MAGIC_SET__
3659 internal_a
.magic
= MIPS_PE_MAGIC
;
3662 #ifndef __A_MAGIC_SET__
3663 #include "Your aouthdr magic number is not being set!"
3665 #undef __A_MAGIC_SET__
3669 /* FIXME: Does anybody ever set this to another value? */
3670 internal_a
.vstamp
= 0;
3672 /* Now should write relocs, strings, syms */
3673 obj_sym_filepos (abfd
) = sym_base
;
3675 if (bfd_get_symcount (abfd
) != 0)
3679 if (!coff_add_missing_symbols (abfd
))
3682 if (!coff_renumber_symbols (abfd
, &firstundef
))
3684 coff_mangle_symbols (abfd
);
3685 if (! coff_write_symbols (abfd
))
3687 if (! coff_write_linenumbers (abfd
))
3689 if (! coff_write_relocs (abfd
, firstundef
))
3692 #ifdef COFF_LONG_SECTION_NAMES
3693 else if (long_section_names
)
3695 /* If we have long section names we have to write out the string
3696 table even if there are no symbols. */
3697 if (! coff_write_symbols (abfd
))
3701 #ifdef COFF_IMAGE_WITH_PE
3703 else if ((abfd
->flags
& EXEC_P
) != 0)
3707 /* PowerPC PE appears to require that all executable files be
3708 rounded up to the page size. */
3711 BFD_ALIGN (sym_base
, COFF_PAGE_SIZE
) - 1,
3713 || bfd_write (&b
, 1, 1, abfd
) != 1)
3719 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
3720 backend linker, and obj_raw_syment_count is not valid until after
3721 coff_write_symbols is called. */
3722 if (obj_raw_syment_count (abfd
) != 0)
3724 internal_f
.f_symptr
= sym_base
;
3726 /* AIX appears to require that F_RELFLG not be set if there are
3727 local symbols but no relocations. */
3728 internal_f
.f_flags
&=~ F_RELFLG
;
3733 if (long_section_names
)
3734 internal_f
.f_symptr
= sym_base
;
3736 internal_f
.f_symptr
= 0;
3737 internal_f
.f_flags
|= F_LSYMS
;
3742 internal_a
.tsize
= bfd_get_section_size_before_reloc (text_sec
);
3743 internal_a
.text_start
= internal_a
.tsize
? text_sec
->vma
: 0;
3747 internal_a
.dsize
= bfd_get_section_size_before_reloc (data_sec
);
3748 internal_a
.data_start
= internal_a
.dsize
? data_sec
->vma
: 0;
3752 internal_a
.bsize
= bfd_get_section_size_before_reloc (bss_sec
);
3753 if (internal_a
.bsize
&& bss_sec
->vma
< internal_a
.data_start
)
3754 internal_a
.data_start
= bss_sec
->vma
;
3757 internal_a
.entry
= bfd_get_start_address (abfd
);
3758 internal_f
.f_nsyms
= obj_raw_syment_count (abfd
);
3761 if (xcoff_data (abfd
)->full_aouthdr
)
3764 asection
*loader_sec
;
3766 internal_a
.vstamp
= 1;
3768 internal_a
.o_snentry
= xcoff_data (abfd
)->snentry
;
3769 if (internal_a
.o_snentry
== 0)
3770 internal_a
.entry
= (bfd_vma
) -1;
3772 if (text_sec
!= NULL
)
3774 internal_a
.o_sntext
= text_sec
->target_index
;
3775 internal_a
.o_algntext
= bfd_get_section_alignment (abfd
, text_sec
);
3779 internal_a
.o_sntext
= 0;
3780 internal_a
.o_algntext
= 0;
3782 if (data_sec
!= NULL
)
3784 internal_a
.o_sndata
= data_sec
->target_index
;
3785 internal_a
.o_algndata
= bfd_get_section_alignment (abfd
, data_sec
);
3789 internal_a
.o_sndata
= 0;
3790 internal_a
.o_algndata
= 0;
3792 loader_sec
= bfd_get_section_by_name (abfd
, ".loader");
3793 if (loader_sec
!= NULL
)
3794 internal_a
.o_snloader
= loader_sec
->target_index
;
3796 internal_a
.o_snloader
= 0;
3797 if (bss_sec
!= NULL
)
3798 internal_a
.o_snbss
= bss_sec
->target_index
;
3800 internal_a
.o_snbss
= 0;
3802 toc
= xcoff_data (abfd
)->toc
;
3803 internal_a
.o_toc
= toc
;
3804 internal_a
.o_sntoc
= xcoff_data (abfd
)->sntoc
;
3806 internal_a
.o_modtype
= xcoff_data (abfd
)->modtype
;
3807 if (xcoff_data (abfd
)->cputype
!= -1)
3808 internal_a
.o_cputype
= xcoff_data (abfd
)->cputype
;
3811 switch (bfd_get_arch (abfd
))
3813 case bfd_arch_rs6000
:
3814 internal_a
.o_cputype
= 4;
3816 case bfd_arch_powerpc
:
3817 if (bfd_get_mach (abfd
) == 0)
3818 internal_a
.o_cputype
= 3;
3820 internal_a
.o_cputype
= 1;
3826 internal_a
.o_maxstack
= xcoff_data (abfd
)->maxstack
;
3827 internal_a
.o_maxdata
= xcoff_data (abfd
)->maxdata
;
3831 /* now write them */
3832 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
3837 bfd_size_type amount
;
3839 buff
= bfd_malloc (bfd_coff_filhsz (abfd
));
3843 coff_swap_filehdr_out (abfd
, (PTR
) & internal_f
, (PTR
) buff
);
3844 amount
= bfd_write ((PTR
) buff
, 1, bfd_coff_filhsz (abfd
), abfd
);
3848 if (amount
!= bfd_coff_filhsz (abfd
))
3852 if (abfd
->flags
& EXEC_P
)
3854 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
3855 include/coff/pe.h sets AOUTSZ == sizeof(PEAOUTHDR)) */
3857 bfd_size_type amount
;
3859 buff
= bfd_malloc (bfd_coff_aoutsz (abfd
));
3863 coff_swap_aouthdr_out (abfd
, (PTR
) & internal_a
, (PTR
) buff
);
3864 amount
= bfd_write ((PTR
) buff
, 1, bfd_coff_aoutsz (abfd
), abfd
);
3868 if (amount
!= bfd_coff_aoutsz (abfd
))
3877 /* XCOFF seems to always write at least a small a.out header. */
3878 coff_swap_aouthdr_out (abfd
, (PTR
) &internal_a
, (PTR
) &buff
);
3879 if (xcoff_data (abfd
)->full_aouthdr
)
3880 size
= bfd_coff_aoutsz (abfd
);
3882 size
= SMALL_AOUTSZ
;
3883 if (bfd_write ((PTR
) &buff
, 1, size
, abfd
) != size
)
3892 coff_set_section_contents (abfd
, section
, location
, offset
, count
)
3897 bfd_size_type count
;
3899 if (abfd
->output_has_begun
== false) /* set by bfd.c handler */
3901 if (! coff_compute_section_file_positions (abfd
))
3905 #if defined(_LIB) && !defined(TARG_AUX)
3907 /* The physical address field of a .lib section is used to hold the
3908 number of shared libraries in the section. This code counts the
3909 number of sections being written, and increments the lma field
3912 I have found no documentation on the contents of this section.
3913 Experimentation indicates that the section contains zero or more
3914 records, each of which has the following structure:
3916 - a (four byte) word holding the length of this record, in words,
3917 - a word that always seems to be set to "2",
3918 - the path to a shared library, null-terminated and then padded
3919 to a whole word boundary.
3921 bfd_assert calls have been added to alert if an attempt is made
3922 to write a section which doesn't follow these assumptions. The
3923 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
3924 <robertl@arnet.com> (Thanks!).
3926 Gvran Uddeborg <gvran@uddeborg.pp.se> */
3928 if (strcmp (section
->name
, _LIB
) == 0)
3930 bfd_byte
*rec
, *recend
;
3932 rec
= (bfd_byte
*) location
;
3933 recend
= rec
+ count
;
3934 while (rec
< recend
)
3937 rec
+= bfd_get_32 (abfd
, rec
) * 4;
3940 BFD_ASSERT (rec
== recend
);
3945 /* Don't write out bss sections - one way to do this is to
3946 see if the filepos has not been set. */
3947 if (section
->filepos
== 0)
3950 if (bfd_seek (abfd
, (file_ptr
) (section
->filepos
+ offset
), SEEK_SET
) != 0)
3955 return (bfd_write (location
, 1, count
, abfd
) == count
) ? true : false;
3961 coff_close_and_cleanup (abfd
)
3964 if (!bfd_read_p (abfd
))
3965 switch (abfd
->format
)
3968 if (!_bfd_write_archive_contents (abfd
))
3972 if (!coff_write_object_contents (abfd
))
3976 bfd_set_error (bfd_error_invalid_operation
);
3980 /* We depend on bfd_close to free all the memory on the objalloc. */
3987 buy_and_read (abfd
, where
, seek_direction
, size
)
3993 PTR area
= (PTR
) bfd_alloc (abfd
, size
);
3996 if (bfd_seek (abfd
, where
, seek_direction
) != 0
3997 || bfd_read (area
, 1, size
, abfd
) != size
)
4000 } /* buy_and_read() */
4006 Creating the linenumber table is done by reading in the entire
4007 coff linenumber table, and creating another table for internal use.
4009 A coff linenumber table is structured so that each function
4010 is marked as having a line number of 0. Each line within the
4011 function is an offset from the first line in the function. The
4012 base of the line number information for the table is stored in
4013 the symbol associated with the function.
4015 Note: The PE format uses line number 0 for a flag indicating a
4018 The information is copied from the external to the internal
4019 table, and each symbol which marks a function is marked by
4022 How does this work ?
4027 coff_slurp_line_table (abfd
, asect
)
4031 LINENO
*native_lineno
;
4032 alent
*lineno_cache
;
4034 BFD_ASSERT (asect
->lineno
== (alent
*) NULL
);
4036 native_lineno
= (LINENO
*) buy_and_read (abfd
,
4037 asect
->line_filepos
,
4039 (size_t) (bfd_coff_linesz (abfd
) *
4040 asect
->lineno_count
));
4042 (alent
*) bfd_alloc (abfd
, (size_t) ((asect
->lineno_count
+ 1) * sizeof (alent
)));
4043 if (lineno_cache
== NULL
)
4047 unsigned int counter
= 0;
4048 alent
*cache_ptr
= lineno_cache
;
4049 LINENO
*src
= native_lineno
;
4051 while (counter
< asect
->lineno_count
)
4053 struct internal_lineno dst
;
4054 coff_swap_lineno_in (abfd
, src
, &dst
);
4055 cache_ptr
->line_number
= dst
.l_lnno
;
4057 if (cache_ptr
->line_number
== 0)
4061 coff_symbol_type
*sym
;
4064 symndx
= dst
.l_addr
.l_symndx
;
4066 || (unsigned long) symndx
>= obj_raw_syment_count (abfd
))
4068 (*_bfd_error_handler
)
4069 (_("%s: warning: illegal symbol index %ld in line numbers"),
4070 bfd_get_filename (abfd
), dst
.l_addr
.l_symndx
);
4074 /* FIXME: We should not be casting between ints and
4075 pointers like this. */
4076 sym
= ((coff_symbol_type
*)
4077 ((symndx
+ obj_raw_syments (abfd
))
4078 ->u
.syment
._n
._n_n
._n_zeroes
));
4079 cache_ptr
->u
.sym
= (asymbol
*) sym
;
4080 if (sym
->lineno
!= NULL
&& ! warned
)
4082 (*_bfd_error_handler
)
4083 (_("%s: warning: duplicate line number information for `%s'"),
4084 bfd_get_filename (abfd
),
4085 bfd_asymbol_name (&sym
->symbol
));
4087 sym
->lineno
= cache_ptr
;
4091 cache_ptr
->u
.offset
= dst
.l_addr
.l_paddr
4092 - bfd_section_vma (abfd
, asect
);
4093 } /* If no linenumber expect a symbol index */
4099 cache_ptr
->line_number
= 0;
4102 asect
->lineno
= lineno_cache
;
4103 /* FIXME, free native_lineno here, or use alloca or something. */
4107 /* Slurp in the symbol table, converting it to generic form. Note
4108 that if coff_relocate_section is defined, the linker will read
4109 symbols via coff_link_add_symbols, rather than via this routine. */
4112 coff_slurp_symbol_table (abfd
)
4115 combined_entry_type
*native_symbols
;
4116 coff_symbol_type
*cached_area
;
4117 unsigned int *table_ptr
;
4119 unsigned int number_of_symbols
= 0;
4121 if (obj_symbols (abfd
))
4124 /* Read in the symbol table */
4125 if ((native_symbols
= coff_get_normalized_symtab (abfd
)) == NULL
)
4130 /* Allocate enough room for all the symbols in cached form */
4131 cached_area
= ((coff_symbol_type
*)
4133 (obj_raw_syment_count (abfd
)
4134 * sizeof (coff_symbol_type
))));
4136 if (cached_area
== NULL
)
4138 table_ptr
= ((unsigned int *)
4140 (obj_raw_syment_count (abfd
)
4141 * sizeof (unsigned int))));
4143 if (table_ptr
== NULL
)
4147 coff_symbol_type
*dst
= cached_area
;
4148 unsigned int last_native_index
= obj_raw_syment_count (abfd
);
4149 unsigned int this_index
= 0;
4150 while (this_index
< last_native_index
)
4152 combined_entry_type
*src
= native_symbols
+ this_index
;
4153 table_ptr
[this_index
] = number_of_symbols
;
4154 dst
->symbol
.the_bfd
= abfd
;
4156 dst
->symbol
.name
= (char *) (src
->u
.syment
._n
._n_n
._n_offset
);
4157 /* We use the native name field to point to the cached field. */
4158 src
->u
.syment
._n
._n_n
._n_zeroes
= (long) dst
;
4159 dst
->symbol
.section
= coff_section_from_bfd_index (abfd
,
4160 src
->u
.syment
.n_scnum
);
4161 dst
->symbol
.flags
= 0;
4162 dst
->done_lineno
= false;
4164 switch (src
->u
.syment
.n_sclass
)
4169 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
4170 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
4171 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4173 /* Fall through to next case */
4181 case C_THUMBEXTFUNC
:
4187 case C_SYSTEM
: /* System Wide variable */
4190 /* In PE, 0x68 (104) denotes a section symbol */
4192 /* In PE, 0x69 (105) denotes a weak external symbol. */
4195 switch (coff_classify_symbol (abfd
, &src
->u
.syment
))
4197 case COFF_SYMBOL_GLOBAL
:
4198 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
4199 #if defined COFF_WITH_PE
4200 /* PE sets the symbol to a value relative to the
4201 start of the section. */
4202 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4204 dst
->symbol
.value
= (src
->u
.syment
.n_value
4205 - dst
->symbol
.section
->vma
);
4207 if (ISFCN ((src
->u
.syment
.n_type
)))
4209 /* A function ext does not go at the end of a
4211 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4215 case COFF_SYMBOL_COMMON
:
4216 dst
->symbol
.section
= bfd_com_section_ptr
;
4217 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4220 case COFF_SYMBOL_UNDEFINED
:
4221 dst
->symbol
.section
= bfd_und_section_ptr
;
4222 dst
->symbol
.value
= 0;
4225 case COFF_SYMBOL_PE_SECTION
:
4226 dst
->symbol
.flags
|= BSF_EXPORT
| BSF_SECTION_SYM
;
4227 dst
->symbol
.value
= 0;
4230 case COFF_SYMBOL_LOCAL
:
4231 dst
->symbol
.flags
= BSF_LOCAL
;
4232 #if defined COFF_WITH_PE
4233 /* PE sets the symbol to a value relative to the
4234 start of the section. */
4235 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4237 dst
->symbol
.value
= (src
->u
.syment
.n_value
4238 - dst
->symbol
.section
->vma
);
4240 if (ISFCN ((src
->u
.syment
.n_type
)))
4241 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4246 /* A symbol with a csect entry should not go at the end. */
4247 if (src
->u
.syment
.n_numaux
> 0)
4248 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
4252 if (src
->u
.syment
.n_sclass
== C_NT_WEAK
)
4253 dst
->symbol
.flags
= BSF_WEAK
;
4254 if (src
->u
.syment
.n_sclass
== C_SECTION
4255 && src
->u
.syment
.n_scnum
> 0)
4257 dst
->symbol
.flags
= BSF_LOCAL
;
4261 if (src
->u
.syment
.n_sclass
== C_WEAKEXT
)
4262 dst
->symbol
.flags
= BSF_WEAK
;
4266 case C_STAT
: /* static */
4268 case C_LEAFSTAT
: /* static leaf procedure */
4271 case C_THUMBSTAT
: /* Thumb static */
4272 case C_THUMBLABEL
: /* Thumb label */
4273 case C_THUMBSTATFUNC
:/* Thumb static function */
4275 case C_LABEL
: /* label */
4276 if (src
->u
.syment
.n_scnum
== N_DEBUG
)
4277 dst
->symbol
.flags
= BSF_DEBUGGING
;
4279 dst
->symbol
.flags
= BSF_LOCAL
;
4281 /* Base the value as an index from the base of the
4282 section, if there is one. */
4283 if (dst
->symbol
.section
)
4285 #if defined COFF_WITH_PE
4286 /* PE sets the symbol to a value relative to the
4287 start of the section. */
4288 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4290 dst
->symbol
.value
= (src
->u
.syment
.n_value
4291 - dst
->symbol
.section
->vma
);
4295 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4298 case C_MOS
: /* member of structure */
4299 case C_EOS
: /* end of structure */
4300 #ifdef NOTDEF /* C_AUTOARG has the same value */
4302 case C_GLBLREG
: /* A29k-specific storage class */
4305 case C_REGPARM
: /* register parameter */
4306 case C_REG
: /* register variable */
4307 /* C_AUTOARG conflictes with TI COFF C_UEXT */
4308 #if !defined (TIC80COFF) && !defined (TICOFF)
4310 case C_AUTOARG
: /* 960-specific storage class */
4313 case C_TPDEF
: /* type definition */
4315 case C_AUTO
: /* automatic variable */
4316 case C_FIELD
: /* bit field */
4317 case C_ENTAG
: /* enumeration tag */
4318 case C_MOE
: /* member of enumeration */
4319 case C_MOU
: /* member of union */
4320 case C_UNTAG
: /* union tag */
4321 dst
->symbol
.flags
= BSF_DEBUGGING
;
4322 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4325 case C_FILE
: /* file name */
4326 case C_STRTAG
: /* structure tag */
4341 dst
->symbol
.flags
= BSF_DEBUGGING
;
4342 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4346 case C_BINCL
: /* beginning of include file */
4347 case C_EINCL
: /* ending of include file */
4348 /* The value is actually a pointer into the line numbers
4349 of the file. We locate the line number entry, and
4350 set the section to the section which contains it, and
4351 the value to the index in that section. */
4355 dst
->symbol
.flags
= BSF_DEBUGGING
;
4356 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4357 if (sec
->line_filepos
<= (file_ptr
) src
->u
.syment
.n_value
4358 && ((file_ptr
) (sec
->line_filepos
4359 + sec
->lineno_count
* bfd_coff_linesz (abfd
))
4360 > (file_ptr
) src
->u
.syment
.n_value
))
4363 dst
->symbol
.value
= 0;
4366 dst
->symbol
.section
= sec
;
4367 dst
->symbol
.value
= ((src
->u
.syment
.n_value
4368 - sec
->line_filepos
)
4369 / bfd_coff_linesz (abfd
));
4376 dst
->symbol
.flags
= BSF_DEBUGGING
;
4378 /* The value is actually a symbol index. Save a pointer
4379 to the symbol instead of the index. FIXME: This
4380 should use a union. */
4381 src
->u
.syment
.n_value
=
4382 (long) (native_symbols
+ src
->u
.syment
.n_value
);
4383 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4388 case C_BLOCK
: /* ".bb" or ".eb" */
4389 case C_FCN
: /* ".bf" or ".ef" (or PE ".lf") */
4390 case C_EFCN
: /* physical end of function */
4391 #if defined COFF_WITH_PE
4392 /* PE sets the symbol to a value relative to the start
4394 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4395 if (strcmp (dst
->symbol
.name
, ".bf") != 0)
4397 /* PE uses funny values for .ef and .lf; don't
4399 dst
->symbol
.flags
= BSF_DEBUGGING
;
4402 dst
->symbol
.flags
= BSF_DEBUGGING
| BSF_DEBUGGING_RELOC
;
4404 /* Base the value as an index from the base of the
4406 dst
->symbol
.flags
= BSF_LOCAL
;
4407 dst
->symbol
.value
= (src
->u
.syment
.n_value
4408 - dst
->symbol
.section
->vma
);
4412 case C_STATLAB
: /* Static load time label */
4413 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4414 dst
->symbol
.flags
= BSF_GLOBAL
;
4418 /* PE DLLs sometimes have zeroed out symbols for some
4419 reason. Just ignore them without a warning. */
4420 if (src
->u
.syment
.n_type
== 0
4421 && src
->u
.syment
.n_value
== 0
4422 && src
->u
.syment
.n_scnum
== 0)
4425 case C_EXTDEF
: /* external definition */
4426 case C_ULABEL
: /* undefined label */
4427 case C_USTATIC
: /* undefined static */
4428 #ifndef COFF_WITH_PE
4429 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4430 class to represent a section symbol */
4431 case C_LINE
: /* line # reformatted as symbol table entry */
4432 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4433 case C_ALIAS
: /* duplicate tag */
4435 /* New storage classes for TI COFF */
4436 #if defined(TIC80COFF) || defined(TICOFF)
4437 case C_UEXT
: /* Tentative external definition */
4439 case C_EXTLAB
: /* External load time label */
4440 case C_HIDDEN
: /* ext symbol in dmert public lib */
4442 (*_bfd_error_handler
)
4443 (_("%s: Unrecognized storage class %d for %s symbol `%s'"),
4444 bfd_get_filename (abfd
), src
->u
.syment
.n_sclass
,
4445 dst
->symbol
.section
->name
, dst
->symbol
.name
);
4446 dst
->symbol
.flags
= BSF_DEBUGGING
;
4447 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4451 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4455 dst
->symbol
.udata
.i
= 0;
4456 dst
->lineno
= (alent
*) NULL
;
4457 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
4459 number_of_symbols
++;
4460 } /* walk the native symtab */
4461 } /* bfdize the native symtab */
4463 obj_symbols (abfd
) = cached_area
;
4464 obj_raw_syments (abfd
) = native_symbols
;
4466 bfd_get_symcount (abfd
) = number_of_symbols
;
4467 obj_convert (abfd
) = table_ptr
;
4468 /* Slurp the line tables for each section too */
4474 coff_slurp_line_table (abfd
, p
);
4479 } /* coff_slurp_symbol_table() */
4481 /* Classify a COFF symbol. A couple of targets have globally visible
4482 symbols which are not class C_EXT, and this handles those. It also
4483 recognizes some special PE cases. */
4485 static enum coff_symbol_classification
4486 coff_classify_symbol (abfd
, syment
)
4488 struct internal_syment
*syment
;
4490 /* FIXME: This partially duplicates the switch in
4491 coff_slurp_symbol_table. */
4492 switch (syment
->n_sclass
)
4501 case C_THUMBEXTFUNC
:
4509 if (syment
->n_scnum
== 0)
4511 if (syment
->n_value
== 0)
4512 return COFF_SYMBOL_UNDEFINED
;
4514 return COFF_SYMBOL_COMMON
;
4516 return COFF_SYMBOL_GLOBAL
;
4523 if (syment
->n_sclass
== C_STAT
)
4525 if (syment
->n_scnum
== 0)
4527 /* The Microsoft compiler sometimes generates these if a
4528 small static function is inlined every time it is used.
4529 The function is discarded, but the symbol table entry
4531 return COFF_SYMBOL_LOCAL
;
4534 #ifdef STRICT_PE_FORMAT
4535 /* This is correct for Microsoft generated objects, but it
4536 breaks gas generated objects. */
4538 if (syment
->n_value
== 0)
4541 char buf
[SYMNMLEN
+ 1];
4543 sec
= coff_section_from_bfd_index (abfd
, syment
->n_scnum
);
4545 && (strcmp (bfd_get_section_name (abfd
, sec
),
4546 _bfd_coff_internal_syment_name (abfd
, syment
, buf
))
4548 return COFF_SYMBOL_PE_SECTION
;
4552 return COFF_SYMBOL_LOCAL
;
4555 if (syment
->n_sclass
== C_SECTION
)
4557 /* In some cases in a DLL generated by the Microsoft linker, the
4558 n_value field will contain garbage. FIXME: This should
4559 probably be handled by the swapping function instead. */
4560 syment
->n_value
= 0;
4561 if (syment
->n_scnum
== 0)
4562 return COFF_SYMBOL_UNDEFINED
;
4563 return COFF_SYMBOL_PE_SECTION
;
4565 #endif /* COFF_WITH_PE */
4567 /* If it is not a global symbol, we presume it is a local symbol. */
4569 if (syment
->n_scnum
== 0)
4571 char buf
[SYMNMLEN
+ 1];
4573 (*_bfd_error_handler
)
4574 (_("warning: %s: local symbol `%s' has no section"),
4575 bfd_get_filename (abfd
),
4576 _bfd_coff_internal_syment_name (abfd
, syment
, buf
));
4579 return COFF_SYMBOL_LOCAL
;
4586 Coff relocations are easily transformed into the internal BFD form
4589 Reading a coff relocation table is done in the following stages:
4591 o Read the entire coff relocation table into memory.
4593 o Process each relocation in turn; first swap it from the
4594 external to the internal form.
4596 o Turn the symbol referenced in the relocation's symbol index
4597 into a pointer into the canonical symbol table.
4598 This table is the same as the one returned by a call to
4599 @code{bfd_canonicalize_symtab}. The back end will call that
4600 routine and save the result if a canonicalization hasn't been done.
4602 o The reloc index is turned into a pointer to a howto
4603 structure, in a back end specific way. For instance, the 386
4604 and 960 use the @code{r_type} to directly produce an index
4605 into a howto table vector; the 88k subtracts a number from the
4606 @code{r_type} field and creates an addend field.
4612 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
4614 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
4615 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
4616 coffsym = (obj_symbols (abfd) \
4617 + (cache_ptr->sym_ptr_ptr - symbols)); \
4619 coffsym = coff_symbol_from (abfd, ptr); \
4620 if (coffsym != (coff_symbol_type *) NULL \
4621 && coffsym->native->u.syment.n_scnum == 0) \
4622 cache_ptr->addend = 0; \
4623 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
4624 && ptr->section != (asection *) NULL) \
4625 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
4627 cache_ptr->addend = 0; \
4632 coff_slurp_reloc_table (abfd
, asect
, symbols
)
4637 RELOC
*native_relocs
;
4638 arelent
*reloc_cache
;
4643 if (asect
->relocation
)
4645 if (asect
->reloc_count
== 0)
4647 if (asect
->flags
& SEC_CONSTRUCTOR
)
4649 if (!coff_slurp_symbol_table (abfd
))
4652 (RELOC
*) buy_and_read (abfd
,
4655 (size_t) (bfd_coff_relsz (abfd
) *
4656 asect
->reloc_count
));
4657 reloc_cache
= (arelent
*)
4658 bfd_alloc (abfd
, (size_t) (asect
->reloc_count
* sizeof (arelent
)));
4660 if (reloc_cache
== NULL
)
4664 for (idx
= 0; idx
< asect
->reloc_count
; idx
++)
4666 struct internal_reloc dst
;
4667 struct external_reloc
*src
;
4668 #ifndef RELOC_PROCESSING
4672 cache_ptr
= reloc_cache
+ idx
;
4673 src
= native_relocs
+ idx
;
4675 coff_swap_reloc_in (abfd
, src
, &dst
);
4677 #ifdef RELOC_PROCESSING
4678 RELOC_PROCESSING (cache_ptr
, &dst
, symbols
, abfd
, asect
);
4680 cache_ptr
->address
= dst
.r_vaddr
;
4682 if (dst
.r_symndx
!= -1)
4684 if (dst
.r_symndx
< 0 || dst
.r_symndx
>= obj_conv_table_size (abfd
))
4686 (*_bfd_error_handler
)
4687 (_("%s: warning: illegal symbol index %ld in relocs"),
4688 bfd_get_filename (abfd
), dst
.r_symndx
);
4689 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
4694 cache_ptr
->sym_ptr_ptr
= (symbols
4695 + obj_convert (abfd
)[dst
.r_symndx
]);
4696 ptr
= *(cache_ptr
->sym_ptr_ptr
);
4701 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
4705 /* The symbols definitions that we have read in have been
4706 relocated as if their sections started at 0. But the offsets
4707 refering to the symbols in the raw data have not been
4708 modified, so we have to have a negative addend to compensate.
4710 Note that symbols which used to be common must be left alone */
4712 /* Calculate any reloc addend by looking at the symbol */
4713 CALC_ADDEND (abfd
, ptr
, dst
, cache_ptr
);
4715 cache_ptr
->address
-= asect
->vma
;
4716 /* !! cache_ptr->section = (asection *) NULL;*/
4718 /* Fill in the cache_ptr->howto field from dst.r_type */
4719 RTYPE2HOWTO (cache_ptr
, &dst
);
4720 #endif /* RELOC_PROCESSING */
4722 if (cache_ptr
->howto
== NULL
)
4724 (*_bfd_error_handler
)
4725 (_("%s: illegal relocation type %d at address 0x%lx"),
4726 bfd_get_filename (abfd
), dst
.r_type
, (long) dst
.r_vaddr
);
4727 bfd_set_error (bfd_error_bad_value
);
4732 asect
->relocation
= reloc_cache
;
4736 #ifndef coff_rtype_to_howto
4739 /* Get the howto structure for a reloc. This is only used if the file
4740 including this one defines coff_relocate_section to be
4741 _bfd_coff_generic_relocate_section, so it is OK if it does not
4742 always work. It is the responsibility of the including file to
4743 make sure it is reasonable if it is needed. */
4745 static reloc_howto_type
*coff_rtype_to_howto
4746 PARAMS ((bfd
*, asection
*, struct internal_reloc
*,
4747 struct coff_link_hash_entry
*, struct internal_syment
*,
4751 static reloc_howto_type
*
4752 coff_rtype_to_howto (abfd
, sec
, rel
, h
, sym
, addendp
)
4753 bfd
*abfd ATTRIBUTE_UNUSED
;
4754 asection
*sec ATTRIBUTE_UNUSED
;
4755 struct internal_reloc
*rel
;
4756 struct coff_link_hash_entry
*h ATTRIBUTE_UNUSED
;
4757 struct internal_syment
*sym ATTRIBUTE_UNUSED
;
4758 bfd_vma
*addendp ATTRIBUTE_UNUSED
;
4762 RTYPE2HOWTO (&genrel
, rel
);
4763 return genrel
.howto
;
4766 #else /* ! defined (RTYPE2HOWTO) */
4768 #define coff_rtype_to_howto NULL
4770 #endif /* ! defined (RTYPE2HOWTO) */
4771 #endif /* ! defined (coff_rtype_to_howto) */
4773 /* This is stupid. This function should be a boolean predicate. */
4775 coff_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
4781 arelent
*tblptr
= section
->relocation
;
4782 unsigned int count
= 0;
4785 if (section
->flags
& SEC_CONSTRUCTOR
)
4787 /* this section has relocs made up by us, they are not in the
4788 file, so take them out of their chain and place them into
4789 the data area provided */
4790 arelent_chain
*chain
= section
->constructor_chain
;
4791 for (count
= 0; count
< section
->reloc_count
; count
++)
4793 *relptr
++ = &chain
->relent
;
4794 chain
= chain
->next
;
4800 if (! coff_slurp_reloc_table (abfd
, section
, symbols
))
4803 tblptr
= section
->relocation
;
4805 for (; count
++ < section
->reloc_count
;)
4806 *relptr
++ = tblptr
++;
4811 return section
->reloc_count
;
4816 coff_sym_filepos (abfd
)
4819 return obj_sym_filepos (abfd
);
4823 #ifndef coff_reloc16_estimate
4824 #define coff_reloc16_estimate dummy_reloc16_estimate
4826 static int dummy_reloc16_estimate
4827 PARAMS ((bfd
*, asection
*, arelent
*, unsigned int,
4828 struct bfd_link_info
*));
4831 dummy_reloc16_estimate (abfd
, input_section
, reloc
, shrink
, link_info
)
4832 bfd
*abfd ATTRIBUTE_UNUSED
;
4833 asection
*input_section ATTRIBUTE_UNUSED
;
4834 arelent
*reloc ATTRIBUTE_UNUSED
;
4835 unsigned int shrink ATTRIBUTE_UNUSED
;
4836 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
4844 #ifndef coff_reloc16_extra_cases
4846 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
4848 /* This works even if abort is not declared in any header file. */
4850 static void dummy_reloc16_extra_cases
4851 PARAMS ((bfd
*, struct bfd_link_info
*, struct bfd_link_order
*, arelent
*,
4852 bfd_byte
*, unsigned int *, unsigned int *));
4855 dummy_reloc16_extra_cases (abfd
, link_info
, link_order
, reloc
, data
, src_ptr
,
4857 bfd
*abfd ATTRIBUTE_UNUSED
;
4858 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
4859 struct bfd_link_order
*link_order ATTRIBUTE_UNUSED
;
4860 arelent
*reloc ATTRIBUTE_UNUSED
;
4861 bfd_byte
*data ATTRIBUTE_UNUSED
;
4862 unsigned int *src_ptr ATTRIBUTE_UNUSED
;
4863 unsigned int *dst_ptr ATTRIBUTE_UNUSED
;
4869 /* If coff_relocate_section is defined, we can use the optimized COFF
4870 backend linker. Otherwise we must continue to use the old linker. */
4871 #ifdef coff_relocate_section
4872 #ifndef coff_bfd_link_hash_table_create
4873 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
4875 #ifndef coff_bfd_link_add_symbols
4876 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
4878 #ifndef coff_bfd_final_link
4879 #define coff_bfd_final_link _bfd_coff_final_link
4881 #else /* ! defined (coff_relocate_section) */
4882 #define coff_relocate_section NULL
4883 #ifndef coff_bfd_link_hash_table_create
4884 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
4886 #ifndef coff_bfd_link_add_symbols
4887 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
4889 #define coff_bfd_final_link _bfd_generic_final_link
4890 #endif /* ! defined (coff_relocate_section) */
4892 #define coff_bfd_link_split_section _bfd_generic_link_split_section
4894 #ifndef coff_start_final_link
4895 #define coff_start_final_link NULL
4898 #ifndef coff_adjust_symndx
4899 #define coff_adjust_symndx NULL
4902 #ifndef coff_link_add_one_symbol
4903 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
4906 #ifndef coff_link_output_has_begun
4908 static boolean coff_link_output_has_begun
4909 PARAMS ((bfd
*, struct coff_final_link_info
*));
4912 coff_link_output_has_begun (abfd
, info
)
4914 struct coff_final_link_info
* info ATTRIBUTE_UNUSED
;
4916 return abfd
->output_has_begun
;
4920 #ifndef coff_final_link_postscript
4922 static boolean coff_final_link_postscript
4923 PARAMS ((bfd
*, struct coff_final_link_info
*));
4926 coff_final_link_postscript (abfd
, pfinfo
)
4927 bfd
* abfd ATTRIBUTE_UNUSED
;
4928 struct coff_final_link_info
* pfinfo ATTRIBUTE_UNUSED
;
4934 #ifndef coff_SWAP_aux_in
4935 #define coff_SWAP_aux_in coff_swap_aux_in
4937 #ifndef coff_SWAP_sym_in
4938 #define coff_SWAP_sym_in coff_swap_sym_in
4940 #ifndef coff_SWAP_lineno_in
4941 #define coff_SWAP_lineno_in coff_swap_lineno_in
4943 #ifndef coff_SWAP_aux_out
4944 #define coff_SWAP_aux_out coff_swap_aux_out
4946 #ifndef coff_SWAP_sym_out
4947 #define coff_SWAP_sym_out coff_swap_sym_out
4949 #ifndef coff_SWAP_lineno_out
4950 #define coff_SWAP_lineno_out coff_swap_lineno_out
4952 #ifndef coff_SWAP_reloc_out
4953 #define coff_SWAP_reloc_out coff_swap_reloc_out
4955 #ifndef coff_SWAP_filehdr_out
4956 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
4958 #ifndef coff_SWAP_aouthdr_out
4959 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
4961 #ifndef coff_SWAP_scnhdr_out
4962 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
4964 #ifndef coff_SWAP_reloc_in
4965 #define coff_SWAP_reloc_in coff_swap_reloc_in
4967 #ifndef coff_SWAP_filehdr_in
4968 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
4970 #ifndef coff_SWAP_aouthdr_in
4971 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
4973 #ifndef coff_SWAP_scnhdr_in
4974 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
4977 static const bfd_coff_backend_data bfd_coff_std_swap_table
=
4979 coff_SWAP_aux_in
, coff_SWAP_sym_in
, coff_SWAP_lineno_in
,
4980 coff_SWAP_aux_out
, coff_SWAP_sym_out
,
4981 coff_SWAP_lineno_out
, coff_SWAP_reloc_out
,
4982 coff_SWAP_filehdr_out
, coff_SWAP_aouthdr_out
,
4983 coff_SWAP_scnhdr_out
,
4984 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
, FILNMLEN
,
4985 #ifdef COFF_LONG_FILENAMES
4990 #ifdef COFF_LONG_SECTION_NAMES
4995 COFF_DEFAULT_SECTION_ALIGNMENT_POWER
,
4996 coff_SWAP_filehdr_in
, coff_SWAP_aouthdr_in
, coff_SWAP_scnhdr_in
,
4997 coff_SWAP_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
4998 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
4999 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
5000 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
5001 coff_classify_symbol
, coff_compute_section_file_positions
,
5002 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
5003 coff_adjust_symndx
, coff_link_add_one_symbol
,
5004 coff_link_output_has_begun
, coff_final_link_postscript
5007 #ifndef coff_close_and_cleanup
5008 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5011 #ifndef coff_bfd_free_cached_info
5012 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5015 #ifndef coff_get_section_contents
5016 #define coff_get_section_contents _bfd_generic_get_section_contents
5019 #ifndef coff_bfd_copy_private_symbol_data
5020 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5023 #ifndef coff_bfd_copy_private_section_data
5024 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5027 #ifndef coff_bfd_copy_private_bfd_data
5028 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5031 #ifndef coff_bfd_merge_private_bfd_data
5032 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5035 #ifndef coff_bfd_set_private_flags
5036 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5039 #ifndef coff_bfd_print_private_bfd_data
5040 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5043 #ifndef coff_bfd_is_local_label_name
5044 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5047 #ifndef coff_read_minisymbols
5048 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5051 #ifndef coff_minisymbol_to_symbol
5052 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5055 /* The reloc lookup routine must be supplied by each individual COFF
5057 #ifndef coff_bfd_reloc_type_lookup
5058 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5061 #ifndef coff_bfd_get_relocated_section_contents
5062 #define coff_bfd_get_relocated_section_contents \
5063 bfd_generic_get_relocated_section_contents
5066 #ifndef coff_bfd_relax_section
5067 #define coff_bfd_relax_section bfd_generic_relax_section
5070 #ifndef coff_bfd_gc_sections
5071 #define coff_bfd_gc_sections bfd_generic_gc_sections
5074 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5075 const bfd_target VAR = \
5078 bfd_target_coff_flavour, \
5079 BFD_ENDIAN_BIG, /* data byte order is big */ \
5080 BFD_ENDIAN_BIG, /* header byte order is big */ \
5081 /* object flags */ \
5082 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5083 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5084 /* section flags */ \
5085 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5086 UNDER, /* leading symbol underscore */ \
5087 '/', /* ar_pad_char */ \
5088 15, /* ar_max_namelen */ \
5090 /* Data conversion functions. */ \
5091 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5092 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5093 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5095 /* Header conversion functions. */ \
5096 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5097 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5098 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5100 /* bfd_check_format */ \
5101 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5102 _bfd_dummy_target }, \
5103 /* bfd_set_format */ \
5104 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5105 /* bfd_write_contents */ \
5106 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5109 BFD_JUMP_TABLE_GENERIC (coff), \
5110 BFD_JUMP_TABLE_COPY (coff), \
5111 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5112 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5113 BFD_JUMP_TABLE_SYMBOLS (coff), \
5114 BFD_JUMP_TABLE_RELOCS (coff), \
5115 BFD_JUMP_TABLE_WRITE (coff), \
5116 BFD_JUMP_TABLE_LINK (coff), \
5117 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5124 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5125 const bfd_target VAR = \
5128 bfd_target_coff_flavour, \
5129 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5130 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5131 /* object flags */ \
5132 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5133 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5134 /* section flags */ \
5135 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5136 UNDER, /* leading symbol underscore */ \
5137 '/', /* ar_pad_char */ \
5138 15, /* ar_max_namelen */ \
5140 /* Data conversion functions. */ \
5141 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5142 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5143 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5144 /* Header conversion functions. */ \
5145 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5146 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5147 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5148 /* bfd_check_format */ \
5149 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5150 _bfd_dummy_target }, \
5151 /* bfd_set_format */ \
5152 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5153 /* bfd_write_contents */ \
5154 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5157 BFD_JUMP_TABLE_GENERIC (coff), \
5158 BFD_JUMP_TABLE_COPY (coff), \
5159 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5160 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5161 BFD_JUMP_TABLE_SYMBOLS (coff), \
5162 BFD_JUMP_TABLE_RELOCS (coff), \
5163 BFD_JUMP_TABLE_WRITE (coff), \
5164 BFD_JUMP_TABLE_LINK (coff), \
5165 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \