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
;
1792 arch
= bfd_arch_ia64
;
1796 #ifdef A29K_MAGIC_BIG
1797 case A29K_MAGIC_BIG
:
1798 case A29K_MAGIC_LITTLE
:
1799 arch
= bfd_arch_a29k
;
1807 arch
= bfd_arch_arm
;
1808 switch (internal_f
->f_flags
& F_ARM_ARCHITECTURE_MASK
)
1810 case F_ARM_2
: machine
= bfd_mach_arm_2
; break;
1811 case F_ARM_2a
: machine
= bfd_mach_arm_2a
; break;
1812 case F_ARM_3
: machine
= bfd_mach_arm_3
; break;
1814 case F_ARM_3M
: machine
= bfd_mach_arm_3M
; break;
1815 case F_ARM_4
: machine
= bfd_mach_arm_4
; break;
1816 case F_ARM_4T
: machine
= bfd_mach_arm_4T
; break;
1817 case F_ARM_5
: machine
= bfd_mach_arm_5
; break;
1824 #ifdef MC68KBCSMAGIC
1827 #ifdef APOLLOM68KMAGIC
1828 case APOLLOM68KMAGIC
:
1830 #ifdef LYNXCOFFMAGIC
1833 arch
= bfd_arch_m68k
;
1834 machine
= bfd_mach_m68020
;
1841 arch
= bfd_arch_m88k
;
1847 arch
= bfd_arch_z8k
;
1848 switch (internal_f
->f_flags
& F_MACHMASK
)
1851 machine
= bfd_mach_z8001
;
1854 machine
= bfd_mach_z8002
;
1863 arch
= bfd_arch_i860
;
1870 arch
= bfd_arch_i960
;
1871 switch (F_I960TYPE
& internal_f
->f_flags
)
1875 machine
= bfd_mach_i960_core
;
1878 machine
= bfd_mach_i960_kb_sb
;
1881 machine
= bfd_mach_i960_mc
;
1884 machine
= bfd_mach_i960_xa
;
1887 machine
= bfd_mach_i960_ca
;
1890 machine
= bfd_mach_i960_ka_sa
;
1893 machine
= bfd_mach_i960_jx
;
1896 machine
= bfd_mach_i960_hx
;
1905 case U802TOC64MAGIC
:
1914 if (xcoff_data (abfd
)->cputype
!= -1)
1915 cputype
= xcoff_data (abfd
)->cputype
& 0xff;
1918 /* We did not get a value from the a.out header. If the
1919 file has not been stripped, we may be able to get the
1920 architecture information from the first symbol, if it
1921 is a .file symbol. */
1922 if (obj_raw_syment_count (abfd
) == 0)
1927 struct internal_syment sym
;
1929 buf
= (bfd_byte
*) bfd_malloc (bfd_coff_symesz (abfd
));
1930 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1931 || (bfd_read (buf
, 1, bfd_coff_symesz (abfd
), abfd
)
1932 != bfd_coff_symesz (abfd
)))
1937 bfd_coff_swap_sym_in (abfd
, (PTR
) buf
, (PTR
) &sym
);
1938 if (sym
.n_sclass
== C_FILE
)
1939 cputype
= sym
.n_type
& 0xff;
1946 /* FIXME: We don't handle all cases here. */
1952 /* PowerPC Macs use the same magic numbers as RS/6000
1953 (because that's how they were bootstrapped originally),
1954 but they are always PowerPC architecture. */
1955 arch
= bfd_arch_powerpc
;
1958 arch
= bfd_arch_rs6000
;
1964 #endif /* POWERMAC */
1968 arch
= bfd_arch_powerpc
;
1971 case 2: /* 64 bit PowerPC */
1972 arch
= bfd_arch_powerpc
;
1976 arch
= bfd_arch_powerpc
;
1980 arch
= bfd_arch_rs6000
;
1990 arch
= bfd_arch_we32k
;
1997 arch
= bfd_arch_h8300
;
1998 machine
= bfd_mach_h8300
;
1999 /* !! FIXME this probably isn't the right place for this */
2000 abfd
->flags
|= BFD_IS_RELAXABLE
;
2006 arch
= bfd_arch_h8300
;
2007 machine
= bfd_mach_h8300h
;
2008 /* !! FIXME this probably isn't the right place for this */
2009 abfd
->flags
|= BFD_IS_RELAXABLE
;
2015 arch
= bfd_arch_h8300
;
2016 machine
= bfd_mach_h8300s
;
2017 /* !! FIXME this probably isn't the right place for this */
2018 abfd
->flags
|= BFD_IS_RELAXABLE
;
2022 #ifdef SH_ARCH_MAGIC_BIG
2023 case SH_ARCH_MAGIC_BIG
:
2024 case SH_ARCH_MAGIC_LITTLE
:
2026 case SH_ARCH_MAGIC_WINCE
:
2033 #ifdef MIPS_ARCH_MAGIC_WINCE
2034 case MIPS_ARCH_MAGIC_WINCE
:
2035 arch
= bfd_arch_mips
;
2042 arch
= bfd_arch_h8500
;
2049 #ifdef LYNXCOFFMAGIC
2052 arch
= bfd_arch_sparc
;
2059 arch
= bfd_arch_tic30
;
2064 #ifdef TICOFF_TARGET_ARCH
2065 /* this TI COFF section should be used by all new TI COFF v0 targets */
2067 arch
= TICOFF_TARGET_ARCH
;
2073 /* this TI COFF section should be used by all new TI COFF v1/2 targets */
2074 /* TI COFF1 and COFF2 use the target_id field to specify which arch */
2077 switch (internal_f
->f_target_id
)
2081 arch
= TICOFF_TARGET_ARCH
;
2085 arch
= bfd_arch_obscure
;
2086 (*_bfd_error_handler
)
2087 (_("Unrecognized TI COFF target id '0x%x'"),
2088 internal_f
->f_target_id
);
2094 #ifdef TIC80_ARCH_MAGIC
2095 case TIC80_ARCH_MAGIC
:
2096 arch
= bfd_arch_tic80
;
2102 arch
= bfd_arch_mcore
;
2105 default: /* Unreadable input file type */
2106 arch
= bfd_arch_obscure
;
2110 bfd_default_set_arch_mach (abfd
, arch
, machine
);
2114 #ifdef SYMNAME_IN_DEBUG
2116 static boolean symname_in_debug_hook
2117 PARAMS ((bfd
*, struct internal_syment
*));
2120 symname_in_debug_hook (abfd
, sym
)
2121 bfd
* abfd ATTRIBUTE_UNUSED
;
2122 struct internal_syment
*sym
;
2124 return SYMNAME_IN_DEBUG (sym
) ? true : false;
2129 #define symname_in_debug_hook \
2130 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2137 #define FORCE_SYMNAMES_IN_STRINGS
2140 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2142 static boolean coff_pointerize_aux_hook
2143 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
2144 unsigned int, combined_entry_type
*));
2148 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
2149 bfd
*abfd ATTRIBUTE_UNUSED
;
2150 combined_entry_type
*table_base
;
2151 combined_entry_type
*symbol
;
2152 unsigned int indaux
;
2153 combined_entry_type
*aux
;
2155 int class = symbol
->u
.syment
.n_sclass
;
2157 if ((class == C_EXT
|| class == C_HIDEXT
)
2158 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2160 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) == XTY_LD
)
2162 aux
->u
.auxent
.x_csect
.x_scnlen
.p
=
2163 table_base
+ aux
->u
.auxent
.x_csect
.x_scnlen
.l
;
2164 aux
->fix_scnlen
= 1;
2167 /* Return true to indicate that the caller should not do any
2168 further work on this auxent. */
2172 /* Return false to indicate that this auxent should be handled by
2180 /* We don't want to pointerize bal entries. */
2182 static boolean coff_pointerize_aux_hook
2183 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
2184 unsigned int, combined_entry_type
*));
2188 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
2189 bfd
*abfd ATTRIBUTE_UNUSED
;
2190 combined_entry_type
*table_base ATTRIBUTE_UNUSED
;
2191 combined_entry_type
*symbol
;
2192 unsigned int indaux
;
2193 combined_entry_type
*aux ATTRIBUTE_UNUSED
;
2195 /* Return true if we don't want to pointerize this aux entry, which
2196 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2198 && (symbol
->u
.syment
.n_sclass
== C_LEAFPROC
2199 || symbol
->u
.syment
.n_sclass
== C_LEAFSTAT
2200 || symbol
->u
.syment
.n_sclass
== C_LEAFEXT
));
2205 #define coff_pointerize_aux_hook 0
2208 #endif /* ! RS6000COFF_C */
2210 /* Print an aux entry. This returns true if it has printed it. */
2212 static boolean coff_print_aux
2213 PARAMS ((bfd
*, FILE *, combined_entry_type
*, combined_entry_type
*,
2214 combined_entry_type
*, unsigned int));
2217 coff_print_aux (abfd
, file
, table_base
, symbol
, aux
, indaux
)
2218 bfd
*abfd ATTRIBUTE_UNUSED
;
2219 FILE *file ATTRIBUTE_UNUSED
;
2220 combined_entry_type
*table_base ATTRIBUTE_UNUSED
;
2221 combined_entry_type
*symbol ATTRIBUTE_UNUSED
;
2222 combined_entry_type
*aux ATTRIBUTE_UNUSED
;
2223 unsigned int indaux ATTRIBUTE_UNUSED
;
2226 if ((symbol
->u
.syment
.n_sclass
== C_EXT
2227 || symbol
->u
.syment
.n_sclass
== C_HIDEXT
)
2228 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2230 /* This is a csect entry. */
2231 fprintf (file
, "AUX ");
2232 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) != XTY_LD
)
2234 BFD_ASSERT (! aux
->fix_scnlen
);
2235 fprintf (file
, "val %5ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2239 fprintf (file
, "indx ");
2240 if (! aux
->fix_scnlen
)
2241 fprintf (file
, "%4ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2243 fprintf (file
, "%4ld",
2244 (long) (aux
->u
.auxent
.x_csect
.x_scnlen
.p
- table_base
));
2247 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2248 aux
->u
.auxent
.x_csect
.x_parmhash
,
2249 (unsigned int) aux
->u
.auxent
.x_csect
.x_snhash
,
2250 SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
),
2251 SMTYP_ALIGN (aux
->u
.auxent
.x_csect
.x_smtyp
),
2252 (unsigned int) aux
->u
.auxent
.x_csect
.x_smclas
,
2253 aux
->u
.auxent
.x_csect
.x_stab
,
2254 (unsigned int) aux
->u
.auxent
.x_csect
.x_snstab
);
2259 /* Return false to indicate that no special action was taken. */
2267 To write relocations, the back end steps though the
2268 canonical relocation table and create an
2269 @code{internal_reloc}. The symbol index to use is removed from
2270 the @code{offset} field in the symbol table supplied. The
2271 address comes directly from the sum of the section base
2272 address and the relocation offset; the type is dug directly
2273 from the howto field. Then the @code{internal_reloc} is
2274 swapped into the shape of an @code{external_reloc} and written
2281 static int compare_arelent_ptr
PARAMS ((const PTR
, const PTR
));
2283 /* AUX's ld wants relocations to be sorted */
2285 compare_arelent_ptr (x
, y
)
2289 const arelent
**a
= (const arelent
**) x
;
2290 const arelent
**b
= (const arelent
**) y
;
2291 bfd_size_type aadr
= (*a
)->address
;
2292 bfd_size_type badr
= (*b
)->address
;
2294 return (aadr
< badr
? -1 : badr
< aadr
? 1 : 0);
2297 #endif /* TARG_AUX */
2300 coff_write_relocs (abfd
, first_undef
)
2306 for (s
= abfd
->sections
; s
!= (asection
*) NULL
; s
= s
->next
)
2309 struct external_reloc dst
;
2315 /* sort relocations before we write them out */
2316 p
= (arelent
**) bfd_malloc (s
->reloc_count
* sizeof (arelent
*));
2317 if (p
== NULL
&& s
->reloc_count
> 0)
2319 memcpy (p
, s
->orelocation
, s
->reloc_count
* sizeof (arelent
*));
2320 qsort (p
, s
->reloc_count
, sizeof (arelent
*), compare_arelent_ptr
);
2323 if (bfd_seek (abfd
, s
->rel_filepos
, SEEK_SET
) != 0)
2325 for (i
= 0; i
< s
->reloc_count
; i
++)
2327 struct internal_reloc n
;
2329 memset ((PTR
) & n
, 0, sizeof (n
));
2331 /* Now we've renumbered the symbols we know where the
2332 undefined symbols live in the table. Check the reloc
2333 entries for symbols who's output bfd isn't the right one.
2334 This is because the symbol was undefined (which means
2335 that all the pointers are never made to point to the same
2336 place). This is a bad thing,'cause the symbols attached
2337 to the output bfd are indexed, so that the relocation
2338 entries know which symbol index they point to. So we
2339 have to look up the output symbol here. */
2341 if (q
->sym_ptr_ptr
[0]->the_bfd
!= abfd
)
2344 const char *sname
= q
->sym_ptr_ptr
[0]->name
;
2345 asymbol
**outsyms
= abfd
->outsymbols
;
2346 for (i
= first_undef
; outsyms
[i
]; i
++)
2348 const char *intable
= outsyms
[i
]->name
;
2349 if (strcmp (intable
, sname
) == 0) {
2350 /* got a hit, so repoint the reloc */
2351 q
->sym_ptr_ptr
= outsyms
+ i
;
2357 n
.r_vaddr
= q
->address
+ s
->vma
;
2360 /* The 29k const/consth reloc pair is a real kludge. The consth
2361 part doesn't have a symbol; it has an offset. So rebuilt
2363 if (q
->howto
->type
== R_IHCONST
)
2364 n
.r_symndx
= q
->addend
;
2369 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2370 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q
,s
))
2372 if (q
->sym_ptr_ptr
== bfd_abs_section_ptr
->symbol_ptr_ptr
)
2374 /* This is a relocation relative to the absolute symbol. */
2378 n
.r_symndx
= get_index ((*(q
->sym_ptr_ptr
)));
2379 /* Take notice if the symbol reloc points to a symbol
2380 we don't have in our symbol table. What should we
2382 if (n
.r_symndx
> obj_conv_table_size (abfd
))
2387 #ifdef SWAP_OUT_RELOC_OFFSET
2388 n
.r_offset
= q
->addend
;
2392 /* Work out reloc type from what is required */
2393 SELECT_RELOC (n
, q
->howto
);
2395 n
.r_type
= q
->howto
->type
;
2397 coff_swap_reloc_out (abfd
, &n
, &dst
);
2398 if (bfd_write ((PTR
) & dst
, 1, bfd_coff_relsz (abfd
), abfd
)
2399 != bfd_coff_relsz (abfd
))
2412 /* Set flags and magic number of a coff file from architecture and machine
2413 type. Result is true if we can represent the arch&type, false if not. */
2416 coff_set_flags (abfd
, magicp
, flagsp
)
2418 unsigned int *magicp ATTRIBUTE_UNUSED
;
2419 unsigned short *flagsp ATTRIBUTE_UNUSED
;
2421 switch (bfd_get_arch (abfd
))
2426 switch (bfd_get_mach (abfd
))
2428 case bfd_mach_z8001
:
2431 case bfd_mach_z8002
:
2445 *magicp
= I960ROMAGIC
;
2447 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2448 I960RWMAGIC); FIXME???
2450 switch (bfd_get_mach (abfd
))
2452 case bfd_mach_i960_core
:
2455 case bfd_mach_i960_kb_sb
:
2458 case bfd_mach_i960_mc
:
2461 case bfd_mach_i960_xa
:
2464 case bfd_mach_i960_ca
:
2467 case bfd_mach_i960_ka_sa
:
2470 case bfd_mach_i960_jx
:
2473 case bfd_mach_i960_hx
:
2486 case bfd_arch_tic30
:
2487 *magicp
= TIC30MAGIC
;
2491 #ifdef TICOFF_DEFAULT_MAGIC
2492 case TICOFF_TARGET_ARCH
:
2493 /* if there's no indication of which version we want, use the default */
2495 *magicp
= TICOFF_DEFAULT_MAGIC
;
2498 /* we may want to output in a different COFF version */
2499 switch (abfd
->xvec
->name
[4])
2502 *magicp
= TICOFF0MAGIC
;
2505 *magicp
= TICOFF1MAGIC
;
2508 *magicp
= TICOFF2MAGIC
;
2517 #ifdef TIC80_ARCH_MAGIC
2518 case bfd_arch_tic80
:
2519 *magicp
= TIC80_ARCH_MAGIC
;
2525 * magicp
= ARMPEMAGIC
;
2527 * magicp
= ARMMAGIC
;
2530 if (APCS_SET (abfd
))
2532 if (APCS_26_FLAG (abfd
))
2533 * flagsp
|= F_APCS26
;
2535 if (APCS_FLOAT_FLAG (abfd
))
2536 * flagsp
|= F_APCS_FLOAT
;
2538 if (PIC_FLAG (abfd
))
2541 if (INTERWORK_SET (abfd
) && INTERWORK_FLAG (abfd
))
2542 * flagsp
|= F_INTERWORK
;
2543 switch (bfd_get_mach (abfd
))
2545 case bfd_mach_arm_2
: * flagsp
|= F_ARM_2
; break;
2546 case bfd_mach_arm_2a
: * flagsp
|= F_ARM_2a
; break;
2547 case bfd_mach_arm_3
: * flagsp
|= F_ARM_3
; break;
2548 case bfd_mach_arm_3M
: * flagsp
|= F_ARM_3M
; break;
2549 case bfd_mach_arm_4
: * flagsp
|= F_ARM_4
; break;
2550 case bfd_mach_arm_4T
: * flagsp
|= F_ARM_4T
; break;
2551 case bfd_mach_arm_5
: * flagsp
|= F_ARM_5
; break;
2552 case bfd_mach_arm_5T
: * flagsp
|= F_ARM_5
; break; /* XXX - we do not have an F_ARM_5T */
2557 case bfd_arch_powerpc
:
2564 *magicp
= I386MAGIC
;
2566 /* Just overwrite the usual value if we're doing Lynx. */
2567 *magicp
= LYNXCOFFMAGIC
;
2574 *magicp
= I860MAGIC
;
2580 *magicp
= IA64MAGIC
;
2586 #ifdef APOLLOM68KMAGIC
2587 *magicp
= APOLLO_COFF_VERSION_NUMBER
;
2589 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2590 #ifdef NAMES_HAVE_UNDERSCORE
2591 *magicp
= MC68KBCSMAGIC
;
2593 *magicp
= MC68MAGIC
;
2597 /* Just overwrite the usual value if we're doing Lynx. */
2598 *magicp
= LYNXCOFFMAGIC
;
2606 *magicp
= MC88OMAGIC
;
2611 case bfd_arch_h8300
:
2612 switch (bfd_get_mach (abfd
))
2614 case bfd_mach_h8300
:
2615 *magicp
= H8300MAGIC
;
2617 case bfd_mach_h8300h
:
2618 *magicp
= H8300HMAGIC
;
2620 case bfd_mach_h8300s
:
2621 *magicp
= H8300SMAGIC
;
2627 #ifdef SH_ARCH_MAGIC_BIG
2629 #ifdef COFF_IMAGE_WITH_PE
2630 *magicp
= SH_ARCH_MAGIC_WINCE
;
2632 if (bfd_big_endian (abfd
))
2633 *magicp
= SH_ARCH_MAGIC_BIG
;
2635 *magicp
= SH_ARCH_MAGIC_LITTLE
;
2641 #ifdef MIPS_ARCH_MAGIC_WINCE
2643 *magicp
= MIPS_ARCH_MAGIC_WINCE
;
2649 case bfd_arch_sparc
:
2650 *magicp
= SPARCMAGIC
;
2652 /* Just overwrite the usual value if we're doing Lynx. */
2653 *magicp
= LYNXCOFFMAGIC
;
2660 case bfd_arch_h8500
:
2661 *magicp
= H8500MAGIC
;
2665 #ifdef A29K_MAGIC_BIG
2667 if (bfd_big_endian (abfd
))
2668 *magicp
= A29K_MAGIC_BIG
;
2670 *magicp
= A29K_MAGIC_LITTLE
;
2676 case bfd_arch_we32k
:
2677 *magicp
= WE32KMAGIC
;
2683 case bfd_arch_rs6000
:
2685 case bfd_arch_powerpc
:
2688 if (bfd_get_mach (abfd
) == 620 && !strncmp (abfd
->xvec
->name
,"aix", 3))
2689 *magicp
= U802TOC64MAGIC
;
2692 *magicp
= U802TOCMAGIC
;
2699 case bfd_arch_mcore
:
2700 * magicp
= MCOREMAGIC
;
2704 default: /* Unknown architecture */
2705 /* return false; -- fall through to "return false" below, to avoid
2706 "statement never reached" errors on the one below. */
2715 coff_set_arch_mach (abfd
, arch
, machine
)
2717 enum bfd_architecture arch
;
2718 unsigned long machine
;
2721 unsigned short dummy2
;
2723 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
2726 if (arch
!= bfd_arch_unknown
&&
2727 coff_set_flags (abfd
, &dummy1
, &dummy2
) != true)
2728 return false; /* We can't represent this type */
2730 return true; /* We're easy ... */
2733 #ifdef COFF_IMAGE_WITH_PE
2735 /* This is used to sort sections by VMA, as required by PE image
2738 static int sort_by_secaddr
PARAMS ((const PTR
, const PTR
));
2741 sort_by_secaddr (arg1
, arg2
)
2745 const asection
*a
= *(const asection
**) arg1
;
2746 const asection
*b
= *(const asection
**) arg2
;
2748 if (a
->vma
< b
->vma
)
2750 else if (a
->vma
> b
->vma
)
2756 #endif /* COFF_IMAGE_WITH_PE */
2758 /* Calculate the file position for each section. */
2761 #define ALIGN_SECTIONS_IN_FILE
2763 #if defined(TIC80COFF) || defined(TICOFF)
2764 #undef ALIGN_SECTIONS_IN_FILE
2768 coff_compute_section_file_positions (abfd
)
2772 asection
*previous
= (asection
*) NULL
;
2773 file_ptr sofar
= bfd_coff_filhsz (abfd
);
2774 boolean align_adjust
;
2775 #ifdef ALIGN_SECTIONS_IN_FILE
2780 /* On XCOFF, if we have symbols, set up the .debug section. */
2781 if (bfd_get_symcount (abfd
) > 0)
2784 bfd_size_type i
, symcount
;
2788 symcount
= bfd_get_symcount (abfd
);
2789 for (symp
= abfd
->outsymbols
, i
= 0; i
< symcount
; symp
++, i
++)
2791 coff_symbol_type
*cf
;
2793 cf
= coff_symbol_from (abfd
, *symp
);
2795 && cf
->native
!= NULL
2796 && SYMNAME_IN_DEBUG (&cf
->native
->u
.syment
))
2800 len
= strlen (bfd_asymbol_name (*symp
));
2801 if (len
> SYMNMLEN
|| bfd_coff_force_symnames_in_strings (abfd
))
2802 sz
+= len
+ 1 + bfd_coff_debug_string_prefix_length (abfd
);
2809 dsec
= bfd_make_section_old_way (abfd
, ".debug");
2812 dsec
->_raw_size
= sz
;
2813 dsec
->flags
|= SEC_HAS_CONTENTS
;
2818 #ifdef COFF_IMAGE_WITH_PE
2820 if (coff_data (abfd
)->link_info
)
2822 page_size
= pe_data (abfd
)->pe_opthdr
.FileAlignment
;
2825 page_size
= PE_DEF_FILE_ALIGNMENT
;
2827 #ifdef COFF_PAGE_SIZE
2828 int page_size
= COFF_PAGE_SIZE
;
2832 if (bfd_get_start_address (abfd
))
2834 /* A start address may have been added to the original file. In this
2835 case it will need an optional header to record it. */
2836 abfd
->flags
|= EXEC_P
;
2839 if (abfd
->flags
& EXEC_P
)
2840 sofar
+= bfd_coff_aoutsz (abfd
);
2842 else if (xcoff_data (abfd
)->full_aouthdr
)
2843 sofar
+= bfd_coff_aoutsz (abfd
);
2845 sofar
+= SMALL_AOUTSZ
;
2848 sofar
+= abfd
->section_count
* bfd_coff_scnhsz (abfd
);
2851 /* XCOFF handles overflows in the reloc and line number count fields
2852 by allocating a new section header to hold the correct counts. */
2853 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2854 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2855 sofar
+= bfd_coff_scnhsz (abfd
);
2858 #ifdef COFF_IMAGE_WITH_PE
2860 /* PE requires the sections to be in memory order when listed in
2861 the section headers. It also does not like empty loadable
2862 sections. The sections apparently do not have to be in the
2863 right order in the image file itself, but we do need to get the
2864 target_index values right. */
2867 asection
**section_list
;
2872 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2875 /* We allocate an extra cell to simplify the final loop. */
2876 section_list
= bfd_malloc (sizeof (struct asection
*) * (count
+ 1));
2877 if (section_list
== NULL
)
2881 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2883 section_list
[i
] = current
;
2886 section_list
[i
] = NULL
;
2888 qsort (section_list
, count
, sizeof (asection
*), sort_by_secaddr
);
2890 /* Rethread the linked list into sorted order; at the same time,
2891 assign target_index values. */
2893 abfd
->sections
= section_list
[0];
2894 for (i
= 0; i
< count
; i
++)
2896 current
= section_list
[i
];
2897 current
->next
= section_list
[i
+ 1];
2899 /* Later, if the section has zero size, we'll be throwing it
2900 away, so we don't want to number it now. Note that having
2901 a zero size and having real contents are different
2902 concepts: .bss has no contents, but (usually) non-zero
2904 if (current
->_raw_size
== 0)
2906 /* Discard. However, it still might have (valid) symbols
2907 in it, so arbitrarily set it to section 1 (indexing is
2908 1-based here; usually .text). __end__ and other
2909 contents of .endsection really have this happen.
2910 FIXME: This seems somewhat dubious. */
2911 current
->target_index
= 1;
2914 current
->target_index
= target_index
++;
2917 free (section_list
);
2919 #else /* ! COFF_IMAGE_WITH_PE */
2921 /* Set the target_index field. */
2925 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2926 current
->target_index
= target_index
++;
2928 #endif /* ! COFF_IMAGE_WITH_PE */
2930 align_adjust
= false;
2931 for (current
= abfd
->sections
;
2932 current
!= (asection
*) NULL
;
2933 current
= current
->next
)
2935 #ifdef COFF_IMAGE_WITH_PE
2936 /* With PE we have to pad each section to be a multiple of its
2937 page size too, and remember both sizes. */
2938 if (coff_section_data (abfd
, current
) == NULL
)
2940 current
->used_by_bfd
=
2941 (PTR
) bfd_zalloc (abfd
, sizeof (struct coff_section_tdata
));
2942 if (current
->used_by_bfd
== NULL
)
2945 if (pei_section_data (abfd
, current
) == NULL
)
2947 coff_section_data (abfd
, current
)->tdata
=
2948 (PTR
) bfd_zalloc (abfd
, sizeof (struct pei_section_tdata
));
2949 if (coff_section_data (abfd
, current
)->tdata
== NULL
)
2952 if (pei_section_data (abfd
, current
)->virt_size
== 0)
2953 pei_section_data (abfd
, current
)->virt_size
= current
->_raw_size
;
2956 /* Only deal with sections which have contents. */
2957 if (!(current
->flags
& SEC_HAS_CONTENTS
))
2960 #ifdef COFF_IMAGE_WITH_PE
2961 /* Make sure we skip empty sections in a PE image. */
2962 if (current
->_raw_size
== 0)
2966 /* Align the sections in the file to the same boundary on
2967 which they are aligned in virtual memory. I960 doesn't
2968 do this (FIXME) so we can stay in sync with Intel. 960
2969 doesn't yet page from files... */
2970 #ifdef ALIGN_SECTIONS_IN_FILE
2971 if ((abfd
->flags
& EXEC_P
) != 0)
2973 /* make sure this section is aligned on the right boundary - by
2974 padding the previous section up if necessary */
2977 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
2978 if (previous
!= (asection
*) NULL
)
2980 previous
->_raw_size
+= sofar
- old_sofar
;
2986 /* In demand paged files the low order bits of the file offset
2987 must match the low order bits of the virtual address. */
2988 #ifdef COFF_PAGE_SIZE
2989 if ((abfd
->flags
& D_PAGED
) != 0
2990 && (current
->flags
& SEC_ALLOC
) != 0)
2991 sofar
+= (current
->vma
- sofar
) % page_size
;
2993 current
->filepos
= sofar
;
2995 #ifdef COFF_IMAGE_WITH_PE
2996 /* Set the padded size. */
2997 current
->_raw_size
= (current
->_raw_size
+ page_size
-1) & -page_size
;
3000 sofar
+= current
->_raw_size
;
3002 #ifdef ALIGN_SECTIONS_IN_FILE
3003 /* make sure that this section is of the right size too */
3004 if ((abfd
->flags
& EXEC_P
) == 0)
3006 bfd_size_type old_size
;
3008 old_size
= current
->_raw_size
;
3009 current
->_raw_size
= BFD_ALIGN (current
->_raw_size
,
3010 1 << current
->alignment_power
);
3011 align_adjust
= current
->_raw_size
!= old_size
;
3012 sofar
+= current
->_raw_size
- old_size
;
3017 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
3018 align_adjust
= sofar
!= old_sofar
;
3019 current
->_raw_size
+= sofar
- old_sofar
;
3023 #ifdef COFF_IMAGE_WITH_PE
3024 /* For PE we need to make sure we pad out to the aligned
3025 _raw_size, in case the caller only writes out data to the
3026 unaligned _raw_size. */
3027 if (pei_section_data (abfd
, current
)->virt_size
< current
->_raw_size
)
3028 align_adjust
= true;
3032 /* Force .lib sections to start at zero. The vma is then
3033 incremented in coff_set_section_contents. This is right for
3035 if (strcmp (current
->name
, _LIB
) == 0)
3036 bfd_set_section_vma (abfd
, current
, 0);
3042 /* It is now safe to write to the output file. If we needed an
3043 alignment adjustment for the last section, then make sure that
3044 there is a byte at offset sofar. If there are no symbols and no
3045 relocs, then nothing follows the last section. If we don't force
3046 the last byte out, then the file may appear to be truncated. */
3052 if (bfd_seek (abfd
, sofar
- 1, SEEK_SET
) != 0
3053 || bfd_write (&b
, 1, 1, abfd
) != 1)
3057 /* Make sure the relocations are aligned. We don't need to make
3058 sure that this byte exists, because it will only matter if there
3059 really are relocs. */
3060 sofar
= BFD_ALIGN (sofar
, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER
);
3062 obj_relocbase (abfd
) = sofar
;
3063 abfd
->output_has_begun
= true;
3070 /* This can never work, because it is called too late--after the
3071 section positions have been set. I can't figure out what it is
3072 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3074 /* If .file, .text, .data, .bss symbols are missing, add them. */
3075 /* @@ Should we only be adding missing symbols, or overriding the aux
3076 values for existing section symbols? */
3078 coff_add_missing_symbols (abfd
)
3081 unsigned int nsyms
= bfd_get_symcount (abfd
);
3082 asymbol
**sympp
= abfd
->outsymbols
;
3085 int need_text
= 1, need_data
= 1, need_bss
= 1, need_file
= 1;
3087 for (i
= 0; i
< nsyms
; i
++)
3089 coff_symbol_type
*csym
= coff_symbol_from (abfd
, sympp
[i
]);
3093 /* only do this if there is a coff representation of the input
3095 if (csym
->native
&& csym
->native
->u
.syment
.n_sclass
== C_FILE
)
3100 name
= csym
->symbol
.name
;
3103 if (!strcmp (name
, _TEXT
))
3106 else if (!strcmp (name
, ".wtext"))
3109 else if (!strcmp (name
, _DATA
))
3111 else if (!strcmp (name
, _BSS
))
3115 /* Now i == bfd_get_symcount (abfd). */
3116 /* @@ For now, don't deal with .file symbol. */
3119 if (!need_text
&& !need_data
&& !need_bss
&& !need_file
)
3121 nsyms
+= need_text
+ need_data
+ need_bss
+ need_file
;
3122 sympp2
= (asymbol
**) bfd_alloc (abfd
, nsyms
* sizeof (asymbol
*));
3125 memcpy (sympp2
, sympp
, i
* sizeof (asymbol
*));
3128 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3132 sympp2
[i
++] = coff_section_symbol (abfd
, _TEXT
);
3134 sympp2
[i
++] = coff_section_symbol (abfd
, _DATA
);
3136 sympp2
[i
++] = coff_section_symbol (abfd
, _BSS
);
3137 BFD_ASSERT (i
== nsyms
);
3138 bfd_set_symtab (abfd
, sympp2
, nsyms
);
3147 coff_write_object_contents (abfd
)
3151 boolean hasrelocs
= false;
3152 boolean haslinno
= false;
3153 boolean hasdebug
= false;
3155 file_ptr reloc_base
;
3156 file_ptr lineno_base
;
3158 unsigned long reloc_size
= 0;
3159 unsigned long lnno_size
= 0;
3160 boolean long_section_names
;
3161 asection
*text_sec
= NULL
;
3162 asection
*data_sec
= NULL
;
3163 asection
*bss_sec
= NULL
;
3164 struct internal_filehdr internal_f
;
3165 struct internal_aouthdr internal_a
;
3166 #ifdef COFF_LONG_SECTION_NAMES
3167 size_t string_size
= STRING_SIZE_SIZE
;
3170 bfd_set_error (bfd_error_system_call
);
3172 /* Make a pass through the symbol table to count line number entries and
3173 put them into the correct asections */
3175 lnno_size
= coff_count_linenumbers (abfd
) * bfd_coff_linesz (abfd
);
3177 if (abfd
->output_has_begun
== false)
3179 if (! coff_compute_section_file_positions (abfd
))
3183 reloc_base
= obj_relocbase (abfd
);
3185 /* Work out the size of the reloc and linno areas */
3187 for (current
= abfd
->sections
; current
!= NULL
; current
=
3189 reloc_size
+= current
->reloc_count
* bfd_coff_relsz (abfd
);
3191 lineno_base
= reloc_base
+ reloc_size
;
3192 sym_base
= lineno_base
+ lnno_size
;
3194 /* Indicate in each section->line_filepos its actual file address */
3195 for (current
= abfd
->sections
; current
!= NULL
; current
=
3198 if (current
->lineno_count
)
3200 current
->line_filepos
= lineno_base
;
3201 current
->moving_line_filepos
= lineno_base
;
3202 lineno_base
+= current
->lineno_count
* bfd_coff_linesz (abfd
);
3206 current
->line_filepos
= 0;
3208 if (current
->reloc_count
)
3210 current
->rel_filepos
= reloc_base
;
3211 reloc_base
+= current
->reloc_count
* bfd_coff_relsz (abfd
);
3215 current
->rel_filepos
= 0;
3219 /* Write section headers to the file. */
3220 internal_f
.f_nscns
= 0;
3222 if ((abfd
->flags
& EXEC_P
) != 0)
3223 scn_base
= bfd_coff_filhsz (abfd
) + bfd_coff_aoutsz (abfd
);
3226 scn_base
= bfd_coff_filhsz (abfd
);
3228 if (xcoff_data (abfd
)->full_aouthdr
)
3229 scn_base
+= bfd_coff_aoutsz (abfd
);
3231 scn_base
+= SMALL_AOUTSZ
;
3235 if (bfd_seek (abfd
, scn_base
, SEEK_SET
) != 0)
3238 long_section_names
= false;
3239 for (current
= abfd
->sections
;
3241 current
= current
->next
)
3243 struct internal_scnhdr section
;
3244 boolean is_reloc_section
= false;
3246 #ifdef COFF_IMAGE_WITH_PE
3247 if (strcmp (current
->name
, ".reloc") == 0)
3249 is_reloc_section
= true;
3251 pe_data (abfd
)->has_reloc_section
= 1;
3255 internal_f
.f_nscns
++;
3257 strncpy (section
.s_name
, current
->name
, SCNNMLEN
);
3259 #ifdef COFF_LONG_SECTION_NAMES
3260 /* Handle long section names as in PE. This must be compatible
3261 with the code in coff_write_symbols and _bfd_coff_final_link. */
3265 len
= strlen (current
->name
);
3268 memset (section
.s_name
, 0, SCNNMLEN
);
3269 sprintf (section
.s_name
, "/%lu", (unsigned long) string_size
);
3270 string_size
+= len
+ 1;
3271 long_section_names
= true;
3277 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3278 Ian Taylor <ian@cygnus.com>. */
3279 if (strcmp (current
->name
, _LIB
) == 0)
3280 section
.s_vaddr
= 0;
3283 section
.s_vaddr
= current
->vma
;
3284 section
.s_paddr
= current
->lma
;
3285 section
.s_size
= current
->_raw_size
;
3286 #ifdef coff_get_section_load_page
3287 section
.s_page
= coff_get_section_load_page (current
);
3291 section
.s_paddr
= 0;
3293 #ifdef COFF_IMAGE_WITH_PE
3294 /* Reminder: s_paddr holds the virtual size of the section. */
3295 if (coff_section_data (abfd
, current
) != NULL
3296 && pei_section_data (abfd
, current
) != NULL
)
3297 section
.s_paddr
= pei_section_data (abfd
, current
)->virt_size
;
3299 section
.s_paddr
= 0;
3303 If this section has no size or is unloadable then the scnptr
3306 if (current
->_raw_size
== 0 ||
3307 (current
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
3309 section
.s_scnptr
= 0;
3313 section
.s_scnptr
= current
->filepos
;
3315 section
.s_relptr
= current
->rel_filepos
;
3316 section
.s_lnnoptr
= current
->line_filepos
;
3317 section
.s_nreloc
= current
->reloc_count
;
3318 section
.s_nlnno
= current
->lineno_count
;
3319 #ifndef COFF_IMAGE_WITH_PE
3320 /* In PEI, relocs come in the .reloc section. */
3321 if (current
->reloc_count
!= 0)
3324 if (current
->lineno_count
!= 0)
3326 if ((current
->flags
& SEC_DEBUGGING
) != 0
3327 && ! is_reloc_section
)
3332 /* Indicate the use of an XCOFF overflow section header. */
3333 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3335 section
.s_nreloc
= 0xffff;
3336 section
.s_nlnno
= 0xffff;
3341 section
.s_flags
= sec_to_styp_flags (current
->name
, current
->flags
);
3343 if (!strcmp (current
->name
, _TEXT
))
3347 else if (!strcmp (current
->name
, _DATA
))
3351 else if (!strcmp (current
->name
, _BSS
))
3357 section
.s_align
= (current
->alignment_power
3358 ? 1 << current
->alignment_power
3362 /* TI COFF puts the alignment power in bits 8-11 of the flags */
3363 section
.s_flags
|= (current
->alignment_power
& 0xF) << 8;
3365 #ifdef COFF_ENCODE_ALIGNMENT
3366 COFF_ENCODE_ALIGNMENT(section
, current
->alignment_power
);
3369 #ifdef COFF_IMAGE_WITH_PE
3370 /* Suppress output of the sections if they are null. ld
3371 includes the bss and data sections even if there is no size
3372 assigned to them. NT loader doesn't like it if these section
3373 headers are included if the sections themselves are not
3374 needed. See also coff_compute_section_file_positions. */
3375 if (section
.s_size
== 0)
3376 internal_f
.f_nscns
--;
3381 if (coff_swap_scnhdr_out (abfd
, §ion
, &buff
) == 0
3382 || bfd_write ((PTR
) (&buff
), 1, bfd_coff_scnhsz (abfd
), abfd
)
3383 != bfd_coff_scnhsz (abfd
))
3388 /* PE stores COMDAT section information in the symbol table. If
3389 this section is supposed to have some COMDAT info, track down
3390 the symbol in the symbol table and modify it. */
3391 if ((current
->flags
& SEC_LINK_ONCE
) != 0)
3393 unsigned int i
, count
;
3395 coff_symbol_type
*csym
= NULL
;
3399 count
= bfd_get_symcount (abfd
);
3400 for (i
= 0, psym
= abfd
->outsymbols
; i
< count
; i
++, psym
++)
3402 if ((*psym
)->section
!= current
)
3405 /* Remember the location of the first symbol in this
3407 if (psymsec
== NULL
)
3410 /* See if this is the section symbol. */
3411 if (strcmp ((*psym
)->name
, current
->name
) == 0)
3413 csym
= coff_symbol_from (abfd
, *psym
);
3415 || csym
->native
== NULL
3416 || csym
->native
->u
.syment
.n_numaux
< 1
3417 || csym
->native
->u
.syment
.n_sclass
!= C_STAT
3418 || csym
->native
->u
.syment
.n_type
!= T_NULL
)
3421 /* Here *PSYM is the section symbol for CURRENT. */
3428 Note that we might not if we're converting the file from
3429 some other object file format. */
3432 combined_entry_type
*aux
;
3434 /* We don't touch the x_checksum field. The
3435 x_associated field is not currently supported. */
3437 aux
= csym
->native
+ 1;
3438 switch (current
->flags
& SEC_LINK_DUPLICATES
)
3440 case SEC_LINK_DUPLICATES_DISCARD
:
3441 aux
->u
.auxent
.x_scn
.x_comdat
= IMAGE_COMDAT_SELECT_ANY
;
3444 case SEC_LINK_DUPLICATES_ONE_ONLY
:
3445 aux
->u
.auxent
.x_scn
.x_comdat
=
3446 IMAGE_COMDAT_SELECT_NODUPLICATES
;
3449 case SEC_LINK_DUPLICATES_SAME_SIZE
:
3450 aux
->u
.auxent
.x_scn
.x_comdat
=
3451 IMAGE_COMDAT_SELECT_SAME_SIZE
;
3454 case SEC_LINK_DUPLICATES_SAME_CONTENTS
:
3455 aux
->u
.auxent
.x_scn
.x_comdat
=
3456 IMAGE_COMDAT_SELECT_EXACT_MATCH
;
3460 /* The COMDAT symbol must be the first symbol from this
3461 section in the symbol table. In order to make this
3462 work, we move the COMDAT symbol before the first
3463 symbol we found in the search above. It's OK to
3464 rearrange the symbol table at this point, because
3465 coff_renumber_symbols is going to rearrange it
3466 further and fix up all the aux entries. */
3467 if (psym
!= psymsec
)
3473 for (pcopy
= psym
; pcopy
> psymsec
; pcopy
--)
3474 pcopy
[0] = pcopy
[-1];
3479 #endif /* COFF_WITH_PE */
3483 /* XCOFF handles overflows in the reloc and line number count fields
3484 by creating a new section header to hold the correct values. */
3485 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
3487 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3489 struct internal_scnhdr scnhdr
;
3492 internal_f
.f_nscns
++;
3493 strncpy (&(scnhdr
.s_name
[0]), current
->name
, 8);
3494 scnhdr
.s_paddr
= current
->reloc_count
;
3495 scnhdr
.s_vaddr
= current
->lineno_count
;
3497 scnhdr
.s_scnptr
= 0;
3498 scnhdr
.s_relptr
= current
->rel_filepos
;
3499 scnhdr
.s_lnnoptr
= current
->line_filepos
;
3500 scnhdr
.s_nreloc
= current
->target_index
;
3501 scnhdr
.s_nlnno
= current
->target_index
;
3502 scnhdr
.s_flags
= STYP_OVRFLO
;
3503 if (coff_swap_scnhdr_out (abfd
, &scnhdr
, &buff
) == 0
3504 || bfd_write ((PTR
) &buff
, 1, bfd_coff_scnhsz (abfd
), abfd
)
3505 != bfd_coff_scnhsz (abfd
))
3511 /* OK, now set up the filehdr... */
3513 /* Don't include the internal abs section in the section count */
3516 We will NOT put a fucking timestamp in the header here. Every time you
3517 put it back, I will come in and take it out again. I'm sorry. This
3518 field does not belong here. We fill it with a 0 so it compares the
3519 same but is not a reasonable time. -- gnu@cygnus.com
3521 internal_f
.f_timdat
= 0;
3523 internal_f
.f_flags
= 0;
3525 if (abfd
->flags
& EXEC_P
)
3526 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
3529 internal_f
.f_opthdr
= 0;
3531 if (xcoff_data (abfd
)->full_aouthdr
)
3532 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
3534 internal_f
.f_opthdr
= SMALL_AOUTSZ
;
3539 internal_f
.f_flags
|= F_RELFLG
;
3541 internal_f
.f_flags
|= F_LNNO
;
3542 if (abfd
->flags
& EXEC_P
)
3543 internal_f
.f_flags
|= F_EXEC
;
3544 #ifdef COFF_IMAGE_WITH_PE
3546 internal_f
.f_flags
|= IMAGE_FILE_DEBUG_STRIPPED
;
3549 #ifndef COFF_WITH_PE
3550 if (bfd_little_endian (abfd
))
3551 internal_f
.f_flags
|= F_AR32WR
;
3553 internal_f
.f_flags
|= F_AR32W
;
3557 /* target id is used in TI COFF v1 and later; COFF0 won't use this field,
3558 but it doesn't hurt to set it internally */
3559 internal_f
.f_target_id
= TI_TARGET_ID
;
3561 #ifdef TIC80_TARGET_ID
3562 internal_f
.f_target_id
= TIC80_TARGET_ID
;
3566 FIXME, should do something about the other byte orders and
3571 if ((abfd
->flags
& DYNAMIC
) != 0)
3572 internal_f
.f_flags
|= F_SHROBJ
;
3573 if (bfd_get_section_by_name (abfd
, _LOADER
) != NULL
)
3574 internal_f
.f_flags
|= F_DYNLOAD
;
3577 memset (&internal_a
, 0, sizeof internal_a
);
3579 /* Set up architecture-dependent stuff */
3582 unsigned int magic
= 0;
3583 unsigned short flags
= 0;
3584 coff_set_flags (abfd
, &magic
, &flags
);
3585 internal_f
.f_magic
= magic
;
3586 internal_f
.f_flags
|= flags
;
3587 /* ...and the "opt"hdr... */
3590 #ifdef ULTRA3 /* NYU's machine */
3591 /* FIXME: This is a bogus check. I really want to see if there
3592 * is a .shbss or a .shdata section, if so then set the magic
3593 * number to indicate a shared data executable.
3595 if (internal_f
.f_nscns
>= 7)
3596 internal_a
.magic
= SHMAGIC
; /* Shared magic */
3599 internal_a
.magic
= NMAGIC
; /* Assume separate i/d */
3600 #define __A_MAGIC_SET__
3602 #ifdef TICOFF_AOUT_MAGIC
3603 internal_a
.magic
= TICOFF_AOUT_MAGIC
;
3604 #define __A_MAGIC_SET__
3607 internal_a
.magic
= TIC80_ARCH_MAGIC
;
3608 #define __A_MAGIC_SET__
3611 /* FIXME: What are the a.out magic numbers for the i860? */
3612 internal_a
.magic
= 0;
3613 #define __A_MAGIC_SET__
3616 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
3617 #define __A_MAGIC_SET__
3620 #define __A_MAGIC_SET__
3621 internal_a
.magic
= PAGEMAGICBCS
;
3625 #define __A_MAGIC_SET__
3626 internal_a
.magic
= APOLLO_COFF_VERSION_NUMBER
;
3629 #if defined(M68) || defined(WE32K) || defined(M68K)
3630 #define __A_MAGIC_SET__
3632 internal_a
.magic
= LYNXCOFFMAGIC
;
3634 #if defined(TARG_AUX)
3635 internal_a
.magic
= (abfd
->flags
& D_PAGED
? PAGEMAGICPEXECPAGED
:
3636 abfd
->flags
& WP_TEXT
? PAGEMAGICPEXECSWAPPED
:
3637 PAGEMAGICEXECSWAPPED
);
3639 #if defined (PAGEMAGICPEXECPAGED)
3640 internal_a
.magic
= PAGEMAGICPEXECPAGED
;
3642 #endif /* TARG_AUX */
3644 #endif /* M68 || WE32K || M68K */
3647 #define __A_MAGIC_SET__
3648 internal_a
.magic
= ZMAGIC
;
3652 #define __A_MAGIC_SET__
3653 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
3656 #if defined MCORE_PE
3657 #define __A_MAGIC_SET__
3658 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
3662 #define __A_MAGIC_SET__
3664 internal_a
.magic
= LYNXCOFFMAGIC
;
3666 internal_a
.magic
= ZMAGIC
;
3671 #define __A_MAGIC_SET__
3672 internal_a
.magic
= ZMAGIC
;
3676 #define __A_MAGIC_SET__
3678 internal_a
.magic
= LYNXCOFFMAGIC
;
3683 #define __A_MAGIC_SET__
3684 internal_a
.magic
= (abfd
->flags
& D_PAGED
) ? RS6K_AOUTHDR_ZMAGIC
:
3685 (abfd
->flags
& WP_TEXT
) ? RS6K_AOUTHDR_NMAGIC
:
3686 RS6K_AOUTHDR_OMAGIC
;
3689 #if defined(SH) && defined(COFF_WITH_PE)
3690 #define __A_MAGIC_SET__
3691 internal_a
.magic
= SH_PE_MAGIC
;
3694 #if defined(MIPS) && defined(COFF_WITH_PE)
3695 #define __A_MAGIC_SET__
3696 internal_a
.magic
= MIPS_PE_MAGIC
;
3699 #ifndef __A_MAGIC_SET__
3700 #include "Your aouthdr magic number is not being set!"
3702 #undef __A_MAGIC_SET__
3706 /* FIXME: Does anybody ever set this to another value? */
3707 internal_a
.vstamp
= 0;
3709 /* Now should write relocs, strings, syms */
3710 obj_sym_filepos (abfd
) = sym_base
;
3712 if (bfd_get_symcount (abfd
) != 0)
3716 if (!coff_add_missing_symbols (abfd
))
3719 if (!coff_renumber_symbols (abfd
, &firstundef
))
3721 coff_mangle_symbols (abfd
);
3722 if (! coff_write_symbols (abfd
))
3724 if (! coff_write_linenumbers (abfd
))
3726 if (! coff_write_relocs (abfd
, firstundef
))
3729 #ifdef COFF_LONG_SECTION_NAMES
3730 else if (long_section_names
)
3732 /* If we have long section names we have to write out the string
3733 table even if there are no symbols. */
3734 if (! coff_write_symbols (abfd
))
3738 #ifdef COFF_IMAGE_WITH_PE
3740 else if ((abfd
->flags
& EXEC_P
) != 0)
3744 /* PowerPC PE appears to require that all executable files be
3745 rounded up to the page size. */
3748 BFD_ALIGN (sym_base
, COFF_PAGE_SIZE
) - 1,
3750 || bfd_write (&b
, 1, 1, abfd
) != 1)
3756 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
3757 backend linker, and obj_raw_syment_count is not valid until after
3758 coff_write_symbols is called. */
3759 if (obj_raw_syment_count (abfd
) != 0)
3761 internal_f
.f_symptr
= sym_base
;
3763 /* AIX appears to require that F_RELFLG not be set if there are
3764 local symbols but no relocations. */
3765 internal_f
.f_flags
&=~ F_RELFLG
;
3770 if (long_section_names
)
3771 internal_f
.f_symptr
= sym_base
;
3773 internal_f
.f_symptr
= 0;
3774 internal_f
.f_flags
|= F_LSYMS
;
3779 internal_a
.tsize
= bfd_get_section_size_before_reloc (text_sec
);
3780 internal_a
.text_start
= internal_a
.tsize
? text_sec
->vma
: 0;
3784 internal_a
.dsize
= bfd_get_section_size_before_reloc (data_sec
);
3785 internal_a
.data_start
= internal_a
.dsize
? data_sec
->vma
: 0;
3789 internal_a
.bsize
= bfd_get_section_size_before_reloc (bss_sec
);
3790 if (internal_a
.bsize
&& bss_sec
->vma
< internal_a
.data_start
)
3791 internal_a
.data_start
= bss_sec
->vma
;
3794 internal_a
.entry
= bfd_get_start_address (abfd
);
3795 internal_f
.f_nsyms
= obj_raw_syment_count (abfd
);
3798 if (xcoff_data (abfd
)->full_aouthdr
)
3801 asection
*loader_sec
;
3803 internal_a
.vstamp
= 1;
3805 internal_a
.o_snentry
= xcoff_data (abfd
)->snentry
;
3806 if (internal_a
.o_snentry
== 0)
3807 internal_a
.entry
= (bfd_vma
) -1;
3809 if (text_sec
!= NULL
)
3811 internal_a
.o_sntext
= text_sec
->target_index
;
3812 internal_a
.o_algntext
= bfd_get_section_alignment (abfd
, text_sec
);
3816 internal_a
.o_sntext
= 0;
3817 internal_a
.o_algntext
= 0;
3819 if (data_sec
!= NULL
)
3821 internal_a
.o_sndata
= data_sec
->target_index
;
3822 internal_a
.o_algndata
= bfd_get_section_alignment (abfd
, data_sec
);
3826 internal_a
.o_sndata
= 0;
3827 internal_a
.o_algndata
= 0;
3829 loader_sec
= bfd_get_section_by_name (abfd
, ".loader");
3830 if (loader_sec
!= NULL
)
3831 internal_a
.o_snloader
= loader_sec
->target_index
;
3833 internal_a
.o_snloader
= 0;
3834 if (bss_sec
!= NULL
)
3835 internal_a
.o_snbss
= bss_sec
->target_index
;
3837 internal_a
.o_snbss
= 0;
3839 toc
= xcoff_data (abfd
)->toc
;
3840 internal_a
.o_toc
= toc
;
3841 internal_a
.o_sntoc
= xcoff_data (abfd
)->sntoc
;
3843 internal_a
.o_modtype
= xcoff_data (abfd
)->modtype
;
3844 if (xcoff_data (abfd
)->cputype
!= -1)
3845 internal_a
.o_cputype
= xcoff_data (abfd
)->cputype
;
3848 switch (bfd_get_arch (abfd
))
3850 case bfd_arch_rs6000
:
3851 internal_a
.o_cputype
= 4;
3853 case bfd_arch_powerpc
:
3854 if (bfd_get_mach (abfd
) == 0)
3855 internal_a
.o_cputype
= 3;
3857 internal_a
.o_cputype
= 1;
3863 internal_a
.o_maxstack
= xcoff_data (abfd
)->maxstack
;
3864 internal_a
.o_maxdata
= xcoff_data (abfd
)->maxdata
;
3868 /* now write them */
3869 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
3874 bfd_size_type amount
;
3876 buff
= bfd_malloc (bfd_coff_filhsz (abfd
));
3880 coff_swap_filehdr_out (abfd
, (PTR
) & internal_f
, (PTR
) buff
);
3881 amount
= bfd_write ((PTR
) buff
, 1, bfd_coff_filhsz (abfd
), abfd
);
3885 if (amount
!= bfd_coff_filhsz (abfd
))
3889 if (abfd
->flags
& EXEC_P
)
3891 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
3892 include/coff/pe.h sets AOUTSZ == sizeof(PEAOUTHDR)) */
3894 bfd_size_type amount
;
3896 buff
= bfd_malloc (bfd_coff_aoutsz (abfd
));
3900 coff_swap_aouthdr_out (abfd
, (PTR
) & internal_a
, (PTR
) buff
);
3901 amount
= bfd_write ((PTR
) buff
, 1, bfd_coff_aoutsz (abfd
), abfd
);
3905 if (amount
!= bfd_coff_aoutsz (abfd
))
3914 /* XCOFF seems to always write at least a small a.out header. */
3915 coff_swap_aouthdr_out (abfd
, (PTR
) &internal_a
, (PTR
) &buff
);
3916 if (xcoff_data (abfd
)->full_aouthdr
)
3917 size
= bfd_coff_aoutsz (abfd
);
3919 size
= SMALL_AOUTSZ
;
3920 if (bfd_write ((PTR
) &buff
, 1, size
, abfd
) != size
)
3929 coff_set_section_contents (abfd
, section
, location
, offset
, count
)
3934 bfd_size_type count
;
3936 if (abfd
->output_has_begun
== false) /* set by bfd.c handler */
3938 if (! coff_compute_section_file_positions (abfd
))
3942 #if defined(_LIB) && !defined(TARG_AUX)
3944 /* The physical address field of a .lib section is used to hold the
3945 number of shared libraries in the section. This code counts the
3946 number of sections being written, and increments the lma field
3949 I have found no documentation on the contents of this section.
3950 Experimentation indicates that the section contains zero or more
3951 records, each of which has the following structure:
3953 - a (four byte) word holding the length of this record, in words,
3954 - a word that always seems to be set to "2",
3955 - the path to a shared library, null-terminated and then padded
3956 to a whole word boundary.
3958 bfd_assert calls have been added to alert if an attempt is made
3959 to write a section which doesn't follow these assumptions. The
3960 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
3961 <robertl@arnet.com> (Thanks!).
3963 Gvran Uddeborg <gvran@uddeborg.pp.se> */
3965 if (strcmp (section
->name
, _LIB
) == 0)
3967 bfd_byte
*rec
, *recend
;
3969 rec
= (bfd_byte
*) location
;
3970 recend
= rec
+ count
;
3971 while (rec
< recend
)
3974 rec
+= bfd_get_32 (abfd
, rec
) * 4;
3977 BFD_ASSERT (rec
== recend
);
3982 /* Don't write out bss sections - one way to do this is to
3983 see if the filepos has not been set. */
3984 if (section
->filepos
== 0)
3987 if (bfd_seek (abfd
, (file_ptr
) (section
->filepos
+ offset
), SEEK_SET
) != 0)
3992 return (bfd_write (location
, 1, count
, abfd
) == count
) ? true : false;
3998 coff_close_and_cleanup (abfd
)
4001 if (!bfd_read_p (abfd
))
4002 switch (abfd
->format
)
4005 if (!_bfd_write_archive_contents (abfd
))
4009 if (!coff_write_object_contents (abfd
))
4013 bfd_set_error (bfd_error_invalid_operation
);
4017 /* We depend on bfd_close to free all the memory on the objalloc. */
4024 buy_and_read (abfd
, where
, seek_direction
, size
)
4030 PTR area
= (PTR
) bfd_alloc (abfd
, size
);
4033 if (bfd_seek (abfd
, where
, seek_direction
) != 0
4034 || bfd_read (area
, 1, size
, abfd
) != size
)
4037 } /* buy_and_read() */
4043 Creating the linenumber table is done by reading in the entire
4044 coff linenumber table, and creating another table for internal use.
4046 A coff linenumber table is structured so that each function
4047 is marked as having a line number of 0. Each line within the
4048 function is an offset from the first line in the function. The
4049 base of the line number information for the table is stored in
4050 the symbol associated with the function.
4052 Note: The PE format uses line number 0 for a flag indicating a
4055 The information is copied from the external to the internal
4056 table, and each symbol which marks a function is marked by
4059 How does this work ?
4064 coff_slurp_line_table (abfd
, asect
)
4068 LINENO
*native_lineno
;
4069 alent
*lineno_cache
;
4071 BFD_ASSERT (asect
->lineno
== (alent
*) NULL
);
4073 native_lineno
= (LINENO
*) buy_and_read (abfd
,
4074 asect
->line_filepos
,
4076 (size_t) (bfd_coff_linesz (abfd
) *
4077 asect
->lineno_count
));
4079 (alent
*) bfd_alloc (abfd
, (size_t) ((asect
->lineno_count
+ 1) * sizeof (alent
)));
4080 if (lineno_cache
== NULL
)
4084 unsigned int counter
= 0;
4085 alent
*cache_ptr
= lineno_cache
;
4086 LINENO
*src
= native_lineno
;
4088 while (counter
< asect
->lineno_count
)
4090 struct internal_lineno dst
;
4091 bfd_coff_swap_lineno_in (abfd
, src
, &dst
);
4092 cache_ptr
->line_number
= dst
.l_lnno
;
4094 if (cache_ptr
->line_number
== 0)
4098 coff_symbol_type
*sym
;
4101 symndx
= dst
.l_addr
.l_symndx
;
4103 || (unsigned long) symndx
>= obj_raw_syment_count (abfd
))
4105 (*_bfd_error_handler
)
4106 (_("%s: warning: illegal symbol index %ld in line numbers"),
4107 bfd_get_filename (abfd
), dst
.l_addr
.l_symndx
);
4111 /* FIXME: We should not be casting between ints and
4112 pointers like this. */
4113 sym
= ((coff_symbol_type
*)
4114 ((symndx
+ obj_raw_syments (abfd
))
4115 ->u
.syment
._n
._n_n
._n_zeroes
));
4116 cache_ptr
->u
.sym
= (asymbol
*) sym
;
4117 if (sym
->lineno
!= NULL
&& ! warned
)
4119 (*_bfd_error_handler
)
4120 (_("%s: warning: duplicate line number information for `%s'"),
4121 bfd_get_filename (abfd
),
4122 bfd_asymbol_name (&sym
->symbol
));
4124 sym
->lineno
= cache_ptr
;
4128 cache_ptr
->u
.offset
= dst
.l_addr
.l_paddr
4129 - bfd_section_vma (abfd
, asect
);
4130 } /* If no linenumber expect a symbol index */
4136 cache_ptr
->line_number
= 0;
4139 asect
->lineno
= lineno_cache
;
4140 /* FIXME, free native_lineno here, or use alloca or something. */
4144 /* Slurp in the symbol table, converting it to generic form. Note
4145 that if coff_relocate_section is defined, the linker will read
4146 symbols via coff_link_add_symbols, rather than via this routine. */
4149 coff_slurp_symbol_table (abfd
)
4152 combined_entry_type
*native_symbols
;
4153 coff_symbol_type
*cached_area
;
4154 unsigned int *table_ptr
;
4156 unsigned int number_of_symbols
= 0;
4158 if (obj_symbols (abfd
))
4161 /* Read in the symbol table */
4162 if ((native_symbols
= coff_get_normalized_symtab (abfd
)) == NULL
)
4167 /* Allocate enough room for all the symbols in cached form */
4168 cached_area
= ((coff_symbol_type
*)
4170 (obj_raw_syment_count (abfd
)
4171 * sizeof (coff_symbol_type
))));
4173 if (cached_area
== NULL
)
4175 table_ptr
= ((unsigned int *)
4177 (obj_raw_syment_count (abfd
)
4178 * sizeof (unsigned int))));
4180 if (table_ptr
== NULL
)
4184 coff_symbol_type
*dst
= cached_area
;
4185 unsigned int last_native_index
= obj_raw_syment_count (abfd
);
4186 unsigned int this_index
= 0;
4187 while (this_index
< last_native_index
)
4189 combined_entry_type
*src
= native_symbols
+ this_index
;
4190 table_ptr
[this_index
] = number_of_symbols
;
4191 dst
->symbol
.the_bfd
= abfd
;
4193 dst
->symbol
.name
= (char *) (src
->u
.syment
._n
._n_n
._n_offset
);
4194 /* We use the native name field to point to the cached field. */
4195 src
->u
.syment
._n
._n_n
._n_zeroes
= (long) dst
;
4196 dst
->symbol
.section
= coff_section_from_bfd_index (abfd
,
4197 src
->u
.syment
.n_scnum
);
4198 dst
->symbol
.flags
= 0;
4199 dst
->done_lineno
= false;
4201 switch (src
->u
.syment
.n_sclass
)
4206 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
4207 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
4208 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4210 /* Fall through to next case */
4218 case C_THUMBEXTFUNC
:
4224 case C_SYSTEM
: /* System Wide variable */
4227 /* In PE, 0x68 (104) denotes a section symbol */
4229 /* In PE, 0x69 (105) denotes a weak external symbol. */
4232 switch (coff_classify_symbol (abfd
, &src
->u
.syment
))
4234 case COFF_SYMBOL_GLOBAL
:
4235 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
4236 #if defined COFF_WITH_PE
4237 /* PE sets the symbol to a value relative to the
4238 start of the section. */
4239 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4241 dst
->symbol
.value
= (src
->u
.syment
.n_value
4242 - dst
->symbol
.section
->vma
);
4244 if (ISFCN ((src
->u
.syment
.n_type
)))
4246 /* A function ext does not go at the end of a
4248 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4252 case COFF_SYMBOL_COMMON
:
4253 dst
->symbol
.section
= bfd_com_section_ptr
;
4254 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4257 case COFF_SYMBOL_UNDEFINED
:
4258 dst
->symbol
.section
= bfd_und_section_ptr
;
4259 dst
->symbol
.value
= 0;
4262 case COFF_SYMBOL_PE_SECTION
:
4263 dst
->symbol
.flags
|= BSF_EXPORT
| BSF_SECTION_SYM
;
4264 dst
->symbol
.value
= 0;
4267 case COFF_SYMBOL_LOCAL
:
4268 dst
->symbol
.flags
= BSF_LOCAL
;
4269 #if defined COFF_WITH_PE
4270 /* PE sets the symbol to a value relative to the
4271 start of the section. */
4272 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4274 dst
->symbol
.value
= (src
->u
.syment
.n_value
4275 - dst
->symbol
.section
->vma
);
4277 if (ISFCN ((src
->u
.syment
.n_type
)))
4278 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4283 /* A symbol with a csect entry should not go at the end. */
4284 if (src
->u
.syment
.n_numaux
> 0)
4285 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
4289 if (src
->u
.syment
.n_sclass
== C_NT_WEAK
)
4290 dst
->symbol
.flags
= BSF_WEAK
;
4291 if (src
->u
.syment
.n_sclass
== C_SECTION
4292 && src
->u
.syment
.n_scnum
> 0)
4294 dst
->symbol
.flags
= BSF_LOCAL
;
4298 if (src
->u
.syment
.n_sclass
== C_WEAKEXT
)
4299 dst
->symbol
.flags
= BSF_WEAK
;
4303 case C_STAT
: /* static */
4305 case C_LEAFSTAT
: /* static leaf procedure */
4308 case C_THUMBSTAT
: /* Thumb static */
4309 case C_THUMBLABEL
: /* Thumb label */
4310 case C_THUMBSTATFUNC
:/* Thumb static function */
4312 case C_LABEL
: /* label */
4313 if (src
->u
.syment
.n_scnum
== N_DEBUG
)
4314 dst
->symbol
.flags
= BSF_DEBUGGING
;
4316 dst
->symbol
.flags
= BSF_LOCAL
;
4318 /* Base the value as an index from the base of the
4319 section, if there is one. */
4320 if (dst
->symbol
.section
)
4322 #if defined COFF_WITH_PE
4323 /* PE sets the symbol to a value relative to the
4324 start of the section. */
4325 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4327 dst
->symbol
.value
= (src
->u
.syment
.n_value
4328 - dst
->symbol
.section
->vma
);
4332 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4335 case C_MOS
: /* member of structure */
4336 case C_EOS
: /* end of structure */
4337 #ifdef NOTDEF /* C_AUTOARG has the same value */
4339 case C_GLBLREG
: /* A29k-specific storage class */
4342 case C_REGPARM
: /* register parameter */
4343 case C_REG
: /* register variable */
4344 /* C_AUTOARG conflictes with TI COFF C_UEXT */
4345 #if !defined (TIC80COFF) && !defined (TICOFF)
4347 case C_AUTOARG
: /* 960-specific storage class */
4350 case C_TPDEF
: /* type definition */
4352 case C_AUTO
: /* automatic variable */
4353 case C_FIELD
: /* bit field */
4354 case C_ENTAG
: /* enumeration tag */
4355 case C_MOE
: /* member of enumeration */
4356 case C_MOU
: /* member of union */
4357 case C_UNTAG
: /* union tag */
4358 dst
->symbol
.flags
= BSF_DEBUGGING
;
4359 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4362 case C_FILE
: /* file name */
4363 case C_STRTAG
: /* structure tag */
4378 dst
->symbol
.flags
= BSF_DEBUGGING
;
4379 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4383 case C_BINCL
: /* beginning of include file */
4384 case C_EINCL
: /* ending of include file */
4385 /* The value is actually a pointer into the line numbers
4386 of the file. We locate the line number entry, and
4387 set the section to the section which contains it, and
4388 the value to the index in that section. */
4392 dst
->symbol
.flags
= BSF_DEBUGGING
;
4393 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4394 if (sec
->line_filepos
<= (file_ptr
) src
->u
.syment
.n_value
4395 && ((file_ptr
) (sec
->line_filepos
4396 + sec
->lineno_count
* bfd_coff_linesz (abfd
))
4397 > (file_ptr
) src
->u
.syment
.n_value
))
4400 dst
->symbol
.value
= 0;
4403 dst
->symbol
.section
= sec
;
4404 dst
->symbol
.value
= ((src
->u
.syment
.n_value
4405 - sec
->line_filepos
)
4406 / bfd_coff_linesz (abfd
));
4413 dst
->symbol
.flags
= BSF_DEBUGGING
;
4415 /* The value is actually a symbol index. Save a pointer
4416 to the symbol instead of the index. FIXME: This
4417 should use a union. */
4418 src
->u
.syment
.n_value
=
4419 (long) (native_symbols
+ src
->u
.syment
.n_value
);
4420 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4425 case C_BLOCK
: /* ".bb" or ".eb" */
4426 case C_FCN
: /* ".bf" or ".ef" (or PE ".lf") */
4427 case C_EFCN
: /* physical end of function */
4428 #if defined COFF_WITH_PE
4429 /* PE sets the symbol to a value relative to the start
4431 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4432 if (strcmp (dst
->symbol
.name
, ".bf") != 0)
4434 /* PE uses funny values for .ef and .lf; don't
4436 dst
->symbol
.flags
= BSF_DEBUGGING
;
4439 dst
->symbol
.flags
= BSF_DEBUGGING
| BSF_DEBUGGING_RELOC
;
4441 /* Base the value as an index from the base of the
4443 dst
->symbol
.flags
= BSF_LOCAL
;
4444 dst
->symbol
.value
= (src
->u
.syment
.n_value
4445 - dst
->symbol
.section
->vma
);
4449 case C_STATLAB
: /* Static load time label */
4450 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4451 dst
->symbol
.flags
= BSF_GLOBAL
;
4455 /* PE DLLs sometimes have zeroed out symbols for some
4456 reason. Just ignore them without a warning. */
4457 if (src
->u
.syment
.n_type
== 0
4458 && src
->u
.syment
.n_value
== 0
4459 && src
->u
.syment
.n_scnum
== 0)
4462 case C_EXTDEF
: /* external definition */
4463 case C_ULABEL
: /* undefined label */
4464 case C_USTATIC
: /* undefined static */
4465 #ifndef COFF_WITH_PE
4466 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4467 class to represent a section symbol */
4468 case C_LINE
: /* line # reformatted as symbol table entry */
4469 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4470 case C_ALIAS
: /* duplicate tag */
4472 /* New storage classes for TI COFF */
4473 #if defined(TIC80COFF) || defined(TICOFF)
4474 case C_UEXT
: /* Tentative external definition */
4476 case C_EXTLAB
: /* External load time label */
4477 case C_HIDDEN
: /* ext symbol in dmert public lib */
4479 (*_bfd_error_handler
)
4480 (_("%s: Unrecognized storage class %d for %s symbol `%s'"),
4481 bfd_get_filename (abfd
), src
->u
.syment
.n_sclass
,
4482 dst
->symbol
.section
->name
, dst
->symbol
.name
);
4483 dst
->symbol
.flags
= BSF_DEBUGGING
;
4484 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4488 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4492 dst
->symbol
.udata
.i
= 0;
4493 dst
->lineno
= (alent
*) NULL
;
4494 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
4496 number_of_symbols
++;
4497 } /* walk the native symtab */
4498 } /* bfdize the native symtab */
4500 obj_symbols (abfd
) = cached_area
;
4501 obj_raw_syments (abfd
) = native_symbols
;
4503 bfd_get_symcount (abfd
) = number_of_symbols
;
4504 obj_convert (abfd
) = table_ptr
;
4505 /* Slurp the line tables for each section too */
4511 coff_slurp_line_table (abfd
, p
);
4516 } /* coff_slurp_symbol_table() */
4518 /* Classify a COFF symbol. A couple of targets have globally visible
4519 symbols which are not class C_EXT, and this handles those. It also
4520 recognizes some special PE cases. */
4522 static enum coff_symbol_classification
4523 coff_classify_symbol (abfd
, syment
)
4525 struct internal_syment
*syment
;
4527 /* FIXME: This partially duplicates the switch in
4528 coff_slurp_symbol_table. */
4529 switch (syment
->n_sclass
)
4538 case C_THUMBEXTFUNC
:
4546 if (syment
->n_scnum
== 0)
4548 if (syment
->n_value
== 0)
4549 return COFF_SYMBOL_UNDEFINED
;
4551 return COFF_SYMBOL_COMMON
;
4553 return COFF_SYMBOL_GLOBAL
;
4560 if (syment
->n_sclass
== C_STAT
)
4562 if (syment
->n_scnum
== 0)
4564 /* The Microsoft compiler sometimes generates these if a
4565 small static function is inlined every time it is used.
4566 The function is discarded, but the symbol table entry
4568 return COFF_SYMBOL_LOCAL
;
4571 #ifdef STRICT_PE_FORMAT
4572 /* This is correct for Microsoft generated objects, but it
4573 breaks gas generated objects. */
4575 if (syment
->n_value
== 0)
4578 char buf
[SYMNMLEN
+ 1];
4580 sec
= coff_section_from_bfd_index (abfd
, syment
->n_scnum
);
4582 && (strcmp (bfd_get_section_name (abfd
, sec
),
4583 _bfd_coff_internal_syment_name (abfd
, syment
, buf
))
4585 return COFF_SYMBOL_PE_SECTION
;
4589 return COFF_SYMBOL_LOCAL
;
4592 if (syment
->n_sclass
== C_SECTION
)
4594 /* In some cases in a DLL generated by the Microsoft linker, the
4595 n_value field will contain garbage. FIXME: This should
4596 probably be handled by the swapping function instead. */
4597 syment
->n_value
= 0;
4598 if (syment
->n_scnum
== 0)
4599 return COFF_SYMBOL_UNDEFINED
;
4600 return COFF_SYMBOL_PE_SECTION
;
4602 #endif /* COFF_WITH_PE */
4604 /* If it is not a global symbol, we presume it is a local symbol. */
4606 if (syment
->n_scnum
== 0)
4608 char buf
[SYMNMLEN
+ 1];
4610 (*_bfd_error_handler
)
4611 (_("warning: %s: local symbol `%s' has no section"),
4612 bfd_get_filename (abfd
),
4613 _bfd_coff_internal_syment_name (abfd
, syment
, buf
));
4616 return COFF_SYMBOL_LOCAL
;
4623 Coff relocations are easily transformed into the internal BFD form
4626 Reading a coff relocation table is done in the following stages:
4628 o Read the entire coff relocation table into memory.
4630 o Process each relocation in turn; first swap it from the
4631 external to the internal form.
4633 o Turn the symbol referenced in the relocation's symbol index
4634 into a pointer into the canonical symbol table.
4635 This table is the same as the one returned by a call to
4636 @code{bfd_canonicalize_symtab}. The back end will call that
4637 routine and save the result if a canonicalization hasn't been done.
4639 o The reloc index is turned into a pointer to a howto
4640 structure, in a back end specific way. For instance, the 386
4641 and 960 use the @code{r_type} to directly produce an index
4642 into a howto table vector; the 88k subtracts a number from the
4643 @code{r_type} field and creates an addend field.
4649 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
4651 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
4652 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
4653 coffsym = (obj_symbols (abfd) \
4654 + (cache_ptr->sym_ptr_ptr - symbols)); \
4656 coffsym = coff_symbol_from (abfd, ptr); \
4657 if (coffsym != (coff_symbol_type *) NULL \
4658 && coffsym->native->u.syment.n_scnum == 0) \
4659 cache_ptr->addend = 0; \
4660 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
4661 && ptr->section != (asection *) NULL) \
4662 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
4664 cache_ptr->addend = 0; \
4669 coff_slurp_reloc_table (abfd
, asect
, symbols
)
4674 RELOC
*native_relocs
;
4675 arelent
*reloc_cache
;
4680 if (asect
->relocation
)
4682 if (asect
->reloc_count
== 0)
4684 if (asect
->flags
& SEC_CONSTRUCTOR
)
4686 if (!coff_slurp_symbol_table (abfd
))
4689 (RELOC
*) buy_and_read (abfd
,
4692 (size_t) (bfd_coff_relsz (abfd
) *
4693 asect
->reloc_count
));
4694 reloc_cache
= (arelent
*)
4695 bfd_alloc (abfd
, (size_t) (asect
->reloc_count
* sizeof (arelent
)));
4697 if (reloc_cache
== NULL
)
4701 for (idx
= 0; idx
< asect
->reloc_count
; idx
++)
4703 struct internal_reloc dst
;
4704 struct external_reloc
*src
;
4705 #ifndef RELOC_PROCESSING
4709 cache_ptr
= reloc_cache
+ idx
;
4710 src
= native_relocs
+ idx
;
4712 coff_swap_reloc_in (abfd
, src
, &dst
);
4714 #ifdef RELOC_PROCESSING
4715 RELOC_PROCESSING (cache_ptr
, &dst
, symbols
, abfd
, asect
);
4717 cache_ptr
->address
= dst
.r_vaddr
;
4719 if (dst
.r_symndx
!= -1)
4721 if (dst
.r_symndx
< 0 || dst
.r_symndx
>= obj_conv_table_size (abfd
))
4723 (*_bfd_error_handler
)
4724 (_("%s: warning: illegal symbol index %ld in relocs"),
4725 bfd_get_filename (abfd
), dst
.r_symndx
);
4726 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
4731 cache_ptr
->sym_ptr_ptr
= (symbols
4732 + obj_convert (abfd
)[dst
.r_symndx
]);
4733 ptr
= *(cache_ptr
->sym_ptr_ptr
);
4738 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
4742 /* The symbols definitions that we have read in have been
4743 relocated as if their sections started at 0. But the offsets
4744 refering to the symbols in the raw data have not been
4745 modified, so we have to have a negative addend to compensate.
4747 Note that symbols which used to be common must be left alone */
4749 /* Calculate any reloc addend by looking at the symbol */
4750 CALC_ADDEND (abfd
, ptr
, dst
, cache_ptr
);
4752 cache_ptr
->address
-= asect
->vma
;
4753 /* !! cache_ptr->section = (asection *) NULL;*/
4755 /* Fill in the cache_ptr->howto field from dst.r_type */
4756 RTYPE2HOWTO (cache_ptr
, &dst
);
4757 #endif /* RELOC_PROCESSING */
4759 if (cache_ptr
->howto
== NULL
)
4761 (*_bfd_error_handler
)
4762 (_("%s: illegal relocation type %d at address 0x%lx"),
4763 bfd_get_filename (abfd
), dst
.r_type
, (long) dst
.r_vaddr
);
4764 bfd_set_error (bfd_error_bad_value
);
4769 asect
->relocation
= reloc_cache
;
4773 #ifndef coff_rtype_to_howto
4776 /* Get the howto structure for a reloc. This is only used if the file
4777 including this one defines coff_relocate_section to be
4778 _bfd_coff_generic_relocate_section, so it is OK if it does not
4779 always work. It is the responsibility of the including file to
4780 make sure it is reasonable if it is needed. */
4782 static reloc_howto_type
*coff_rtype_to_howto
4783 PARAMS ((bfd
*, asection
*, struct internal_reloc
*,
4784 struct coff_link_hash_entry
*, struct internal_syment
*,
4788 static reloc_howto_type
*
4789 coff_rtype_to_howto (abfd
, sec
, rel
, h
, sym
, addendp
)
4790 bfd
*abfd ATTRIBUTE_UNUSED
;
4791 asection
*sec ATTRIBUTE_UNUSED
;
4792 struct internal_reloc
*rel
;
4793 struct coff_link_hash_entry
*h ATTRIBUTE_UNUSED
;
4794 struct internal_syment
*sym ATTRIBUTE_UNUSED
;
4795 bfd_vma
*addendp ATTRIBUTE_UNUSED
;
4799 RTYPE2HOWTO (&genrel
, rel
);
4800 return genrel
.howto
;
4803 #else /* ! defined (RTYPE2HOWTO) */
4805 #define coff_rtype_to_howto NULL
4807 #endif /* ! defined (RTYPE2HOWTO) */
4808 #endif /* ! defined (coff_rtype_to_howto) */
4810 /* This is stupid. This function should be a boolean predicate. */
4812 coff_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
4818 arelent
*tblptr
= section
->relocation
;
4819 unsigned int count
= 0;
4822 if (section
->flags
& SEC_CONSTRUCTOR
)
4824 /* this section has relocs made up by us, they are not in the
4825 file, so take them out of their chain and place them into
4826 the data area provided */
4827 arelent_chain
*chain
= section
->constructor_chain
;
4828 for (count
= 0; count
< section
->reloc_count
; count
++)
4830 *relptr
++ = &chain
->relent
;
4831 chain
= chain
->next
;
4837 if (! coff_slurp_reloc_table (abfd
, section
, symbols
))
4840 tblptr
= section
->relocation
;
4842 for (; count
++ < section
->reloc_count
;)
4843 *relptr
++ = tblptr
++;
4848 return section
->reloc_count
;
4853 coff_sym_filepos (abfd
)
4856 return obj_sym_filepos (abfd
);
4860 #ifndef coff_reloc16_estimate
4861 #define coff_reloc16_estimate dummy_reloc16_estimate
4863 static int dummy_reloc16_estimate
4864 PARAMS ((bfd
*, asection
*, arelent
*, unsigned int,
4865 struct bfd_link_info
*));
4868 dummy_reloc16_estimate (abfd
, input_section
, reloc
, shrink
, link_info
)
4869 bfd
*abfd ATTRIBUTE_UNUSED
;
4870 asection
*input_section ATTRIBUTE_UNUSED
;
4871 arelent
*reloc ATTRIBUTE_UNUSED
;
4872 unsigned int shrink ATTRIBUTE_UNUSED
;
4873 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
4881 #ifndef coff_reloc16_extra_cases
4883 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
4885 /* This works even if abort is not declared in any header file. */
4887 static void dummy_reloc16_extra_cases
4888 PARAMS ((bfd
*, struct bfd_link_info
*, struct bfd_link_order
*, arelent
*,
4889 bfd_byte
*, unsigned int *, unsigned int *));
4892 dummy_reloc16_extra_cases (abfd
, link_info
, link_order
, reloc
, data
, src_ptr
,
4894 bfd
*abfd ATTRIBUTE_UNUSED
;
4895 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
4896 struct bfd_link_order
*link_order ATTRIBUTE_UNUSED
;
4897 arelent
*reloc ATTRIBUTE_UNUSED
;
4898 bfd_byte
*data ATTRIBUTE_UNUSED
;
4899 unsigned int *src_ptr ATTRIBUTE_UNUSED
;
4900 unsigned int *dst_ptr ATTRIBUTE_UNUSED
;
4906 /* If coff_relocate_section is defined, we can use the optimized COFF
4907 backend linker. Otherwise we must continue to use the old linker. */
4908 #ifdef coff_relocate_section
4909 #ifndef coff_bfd_link_hash_table_create
4910 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
4912 #ifndef coff_bfd_link_add_symbols
4913 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
4915 #ifndef coff_bfd_final_link
4916 #define coff_bfd_final_link _bfd_coff_final_link
4918 #else /* ! defined (coff_relocate_section) */
4919 #define coff_relocate_section NULL
4920 #ifndef coff_bfd_link_hash_table_create
4921 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
4923 #ifndef coff_bfd_link_add_symbols
4924 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
4926 #define coff_bfd_final_link _bfd_generic_final_link
4927 #endif /* ! defined (coff_relocate_section) */
4929 #define coff_bfd_link_split_section _bfd_generic_link_split_section
4931 #ifndef coff_start_final_link
4932 #define coff_start_final_link NULL
4935 #ifndef coff_adjust_symndx
4936 #define coff_adjust_symndx NULL
4939 #ifndef coff_link_add_one_symbol
4940 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
4943 #ifndef coff_link_output_has_begun
4945 static boolean coff_link_output_has_begun
4946 PARAMS ((bfd
*, struct coff_final_link_info
*));
4949 coff_link_output_has_begun (abfd
, info
)
4951 struct coff_final_link_info
* info ATTRIBUTE_UNUSED
;
4953 return abfd
->output_has_begun
;
4957 #ifndef coff_final_link_postscript
4959 static boolean coff_final_link_postscript
4960 PARAMS ((bfd
*, struct coff_final_link_info
*));
4963 coff_final_link_postscript (abfd
, pfinfo
)
4964 bfd
* abfd ATTRIBUTE_UNUSED
;
4965 struct coff_final_link_info
* pfinfo ATTRIBUTE_UNUSED
;
4971 #ifndef coff_SWAP_aux_in
4972 #define coff_SWAP_aux_in coff_swap_aux_in
4974 #ifndef coff_SWAP_sym_in
4975 #define coff_SWAP_sym_in coff_swap_sym_in
4977 #ifndef coff_SWAP_lineno_in
4978 #define coff_SWAP_lineno_in coff_swap_lineno_in
4980 #ifndef coff_SWAP_aux_out
4981 #define coff_SWAP_aux_out coff_swap_aux_out
4983 #ifndef coff_SWAP_sym_out
4984 #define coff_SWAP_sym_out coff_swap_sym_out
4986 #ifndef coff_SWAP_lineno_out
4987 #define coff_SWAP_lineno_out coff_swap_lineno_out
4989 #ifndef coff_SWAP_reloc_out
4990 #define coff_SWAP_reloc_out coff_swap_reloc_out
4992 #ifndef coff_SWAP_filehdr_out
4993 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
4995 #ifndef coff_SWAP_aouthdr_out
4996 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
4998 #ifndef coff_SWAP_scnhdr_out
4999 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5001 #ifndef coff_SWAP_reloc_in
5002 #define coff_SWAP_reloc_in coff_swap_reloc_in
5004 #ifndef coff_SWAP_filehdr_in
5005 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5007 #ifndef coff_SWAP_aouthdr_in
5008 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5010 #ifndef coff_SWAP_scnhdr_in
5011 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5014 static const bfd_coff_backend_data bfd_coff_std_swap_table
=
5016 coff_SWAP_aux_in
, coff_SWAP_sym_in
, coff_SWAP_lineno_in
,
5017 coff_SWAP_aux_out
, coff_SWAP_sym_out
,
5018 coff_SWAP_lineno_out
, coff_SWAP_reloc_out
,
5019 coff_SWAP_filehdr_out
, coff_SWAP_aouthdr_out
,
5020 coff_SWAP_scnhdr_out
,
5021 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
, FILNMLEN
,
5022 #ifdef COFF_LONG_FILENAMES
5027 #ifdef COFF_LONG_SECTION_NAMES
5032 COFF_DEFAULT_SECTION_ALIGNMENT_POWER
,
5033 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5038 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5043 coff_SWAP_filehdr_in
, coff_SWAP_aouthdr_in
, coff_SWAP_scnhdr_in
,
5044 coff_SWAP_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
5045 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
5046 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
5047 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
5048 coff_classify_symbol
, coff_compute_section_file_positions
,
5049 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
5050 coff_adjust_symndx
, coff_link_add_one_symbol
,
5051 coff_link_output_has_begun
, coff_final_link_postscript
5054 #ifndef coff_close_and_cleanup
5055 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5058 #ifndef coff_bfd_free_cached_info
5059 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5062 #ifndef coff_get_section_contents
5063 #define coff_get_section_contents _bfd_generic_get_section_contents
5066 #ifndef coff_bfd_copy_private_symbol_data
5067 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5070 #ifndef coff_bfd_copy_private_section_data
5071 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5074 #ifndef coff_bfd_copy_private_bfd_data
5075 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5078 #ifndef coff_bfd_merge_private_bfd_data
5079 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5082 #ifndef coff_bfd_set_private_flags
5083 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5086 #ifndef coff_bfd_print_private_bfd_data
5087 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5090 #ifndef coff_bfd_is_local_label_name
5091 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5094 #ifndef coff_read_minisymbols
5095 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5098 #ifndef coff_minisymbol_to_symbol
5099 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5102 /* The reloc lookup routine must be supplied by each individual COFF
5104 #ifndef coff_bfd_reloc_type_lookup
5105 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5108 #ifndef coff_bfd_get_relocated_section_contents
5109 #define coff_bfd_get_relocated_section_contents \
5110 bfd_generic_get_relocated_section_contents
5113 #ifndef coff_bfd_relax_section
5114 #define coff_bfd_relax_section bfd_generic_relax_section
5117 #ifndef coff_bfd_gc_sections
5118 #define coff_bfd_gc_sections bfd_generic_gc_sections
5121 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5122 const bfd_target VAR = \
5125 bfd_target_coff_flavour, \
5126 BFD_ENDIAN_BIG, /* data byte order is big */ \
5127 BFD_ENDIAN_BIG, /* header byte order is big */ \
5128 /* object flags */ \
5129 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5130 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5131 /* section flags */ \
5132 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5133 UNDER, /* leading symbol underscore */ \
5134 '/', /* ar_pad_char */ \
5135 15, /* ar_max_namelen */ \
5137 /* Data conversion functions. */ \
5138 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5139 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5140 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5142 /* Header conversion functions. */ \
5143 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5144 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5145 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5147 /* bfd_check_format */ \
5148 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5149 _bfd_dummy_target }, \
5150 /* bfd_set_format */ \
5151 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5152 /* bfd_write_contents */ \
5153 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5156 BFD_JUMP_TABLE_GENERIC (coff), \
5157 BFD_JUMP_TABLE_COPY (coff), \
5158 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5159 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5160 BFD_JUMP_TABLE_SYMBOLS (coff), \
5161 BFD_JUMP_TABLE_RELOCS (coff), \
5162 BFD_JUMP_TABLE_WRITE (coff), \
5163 BFD_JUMP_TABLE_LINK (coff), \
5164 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5171 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5172 const bfd_target VAR = \
5175 bfd_target_coff_flavour, \
5176 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5177 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5178 /* object flags */ \
5179 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5180 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5181 /* section flags */ \
5182 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5183 UNDER, /* leading symbol underscore */ \
5184 '/', /* ar_pad_char */ \
5185 15, /* ar_max_namelen */ \
5187 /* Data conversion functions. */ \
5188 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5189 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5190 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5191 /* Header conversion functions. */ \
5192 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5193 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5194 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5195 /* bfd_check_format */ \
5196 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5197 _bfd_dummy_target }, \
5198 /* bfd_set_format */ \
5199 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5200 /* bfd_write_contents */ \
5201 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5204 BFD_JUMP_TABLE_GENERIC (coff), \
5205 BFD_JUMP_TABLE_COPY (coff), \
5206 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5207 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5208 BFD_JUMP_TABLE_SYMBOLS (coff), \
5209 BFD_JUMP_TABLE_RELOCS (coff), \
5210 BFD_JUMP_TABLE_WRITE (coff), \
5211 BFD_JUMP_TABLE_LINK (coff), \
5212 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \