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
;
1910 if (xcoff_data (abfd
)->cputype
!= -1)
1911 cputype
= xcoff_data (abfd
)->cputype
& 0xff;
1914 /* We did not get a value from the a.out header. If the
1915 file has not been stripped, we may be able to get the
1916 architecture information from the first symbol, if it
1917 is a .file symbol. */
1918 if (obj_raw_syment_count (abfd
) == 0)
1923 struct internal_syment sym
;
1925 buf
= (bfd_byte
*) bfd_malloc (bfd_coff_symesz (abfd
));
1926 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1927 || (bfd_read (buf
, 1, bfd_coff_symesz (abfd
), abfd
)
1928 != bfd_coff_symesz (abfd
)))
1933 coff_swap_sym_in (abfd
, (PTR
) buf
, (PTR
) &sym
);
1934 if (sym
.n_sclass
== C_FILE
)
1935 cputype
= sym
.n_type
& 0xff;
1942 /* FIXME: We don't handle all cases here. */
1948 /* PowerPC Macs use the same magic numbers as RS/6000
1949 (because that's how they were bootstrapped originally),
1950 but they are always PowerPC architecture. */
1951 arch
= bfd_arch_powerpc
;
1954 arch
= bfd_arch_rs6000
;
1956 #endif /* POWERMAC */
1960 arch
= bfd_arch_powerpc
;
1963 case 2: /* 64 bit PowerPC */
1964 arch
= bfd_arch_powerpc
;
1968 arch
= bfd_arch_powerpc
;
1972 arch
= bfd_arch_rs6000
;
1982 arch
= bfd_arch_we32k
;
1989 arch
= bfd_arch_h8300
;
1990 machine
= bfd_mach_h8300
;
1991 /* !! FIXME this probably isn't the right place for this */
1992 abfd
->flags
|= BFD_IS_RELAXABLE
;
1998 arch
= bfd_arch_h8300
;
1999 machine
= bfd_mach_h8300h
;
2000 /* !! FIXME this probably isn't the right place for this */
2001 abfd
->flags
|= BFD_IS_RELAXABLE
;
2007 arch
= bfd_arch_h8300
;
2008 machine
= bfd_mach_h8300s
;
2009 /* !! FIXME this probably isn't the right place for this */
2010 abfd
->flags
|= BFD_IS_RELAXABLE
;
2014 #ifdef SH_ARCH_MAGIC_BIG
2015 case SH_ARCH_MAGIC_BIG
:
2016 case SH_ARCH_MAGIC_LITTLE
:
2018 case SH_ARCH_MAGIC_WINCE
:
2025 #ifdef MIPS_ARCH_MAGIC_WINCE
2026 case MIPS_ARCH_MAGIC_WINCE
:
2027 arch
= bfd_arch_mips
;
2034 arch
= bfd_arch_h8500
;
2041 #ifdef LYNXCOFFMAGIC
2044 arch
= bfd_arch_sparc
;
2051 arch
= bfd_arch_tic30
;
2056 #ifdef TICOFF_TARGET_ARCH
2057 /* this TI COFF section should be used by all new TI COFF v0 targets */
2059 arch
= TICOFF_TARGET_ARCH
;
2065 /* this TI COFF section should be used by all new TI COFF v1/2 targets */
2066 /* TI COFF1 and COFF2 use the target_id field to specify which arch */
2069 switch (internal_f
->f_target_id
)
2073 arch
= TICOFF_TARGET_ARCH
;
2077 arch
= bfd_arch_obscure
;
2078 (*_bfd_error_handler
)
2079 (_("Unrecognized TI COFF target id '0x%x'"),
2080 internal_f
->f_target_id
);
2086 #ifdef TIC80_ARCH_MAGIC
2087 case TIC80_ARCH_MAGIC
:
2088 arch
= bfd_arch_tic80
;
2094 arch
= bfd_arch_mcore
;
2097 default: /* Unreadable input file type */
2098 arch
= bfd_arch_obscure
;
2102 bfd_default_set_arch_mach (abfd
, arch
, machine
);
2106 #ifdef SYMNAME_IN_DEBUG
2108 static boolean symname_in_debug_hook
2109 PARAMS ((bfd
*, struct internal_syment
*));
2112 symname_in_debug_hook (abfd
, sym
)
2113 bfd
* abfd ATTRIBUTE_UNUSED
;
2114 struct internal_syment
*sym
;
2116 return SYMNAME_IN_DEBUG (sym
) ? true : false;
2121 #define symname_in_debug_hook \
2122 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2128 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2130 static boolean coff_pointerize_aux_hook
2131 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
2132 unsigned int, combined_entry_type
*));
2136 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
2137 bfd
*abfd ATTRIBUTE_UNUSED
;
2138 combined_entry_type
*table_base
;
2139 combined_entry_type
*symbol
;
2140 unsigned int indaux
;
2141 combined_entry_type
*aux
;
2143 int class = symbol
->u
.syment
.n_sclass
;
2145 if ((class == C_EXT
|| class == C_HIDEXT
)
2146 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2148 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) == XTY_LD
)
2150 aux
->u
.auxent
.x_csect
.x_scnlen
.p
=
2151 table_base
+ aux
->u
.auxent
.x_csect
.x_scnlen
.l
;
2152 aux
->fix_scnlen
= 1;
2155 /* Return true to indicate that the caller should not do any
2156 further work on this auxent. */
2160 /* Return false to indicate that this auxent should be handled by
2168 /* We don't want to pointerize bal entries. */
2170 static boolean coff_pointerize_aux_hook
2171 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
2172 unsigned int, combined_entry_type
*));
2176 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
2177 bfd
*abfd ATTRIBUTE_UNUSED
;
2178 combined_entry_type
*table_base ATTRIBUTE_UNUSED
;
2179 combined_entry_type
*symbol
;
2180 unsigned int indaux
;
2181 combined_entry_type
*aux ATTRIBUTE_UNUSED
;
2183 /* Return true if we don't want to pointerize this aux entry, which
2184 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2186 && (symbol
->u
.syment
.n_sclass
== C_LEAFPROC
2187 || symbol
->u
.syment
.n_sclass
== C_LEAFSTAT
2188 || symbol
->u
.syment
.n_sclass
== C_LEAFEXT
));
2193 #define coff_pointerize_aux_hook 0
2196 #endif /* ! RS6000COFF_C */
2198 /* Print an aux entry. This returns true if it has printed it. */
2200 static boolean coff_print_aux
2201 PARAMS ((bfd
*, FILE *, combined_entry_type
*, combined_entry_type
*,
2202 combined_entry_type
*, unsigned int));
2205 coff_print_aux (abfd
, file
, table_base
, symbol
, aux
, indaux
)
2206 bfd
*abfd ATTRIBUTE_UNUSED
;
2207 FILE *file ATTRIBUTE_UNUSED
;
2208 combined_entry_type
*table_base ATTRIBUTE_UNUSED
;
2209 combined_entry_type
*symbol ATTRIBUTE_UNUSED
;
2210 combined_entry_type
*aux ATTRIBUTE_UNUSED
;
2211 unsigned int indaux ATTRIBUTE_UNUSED
;
2214 if ((symbol
->u
.syment
.n_sclass
== C_EXT
2215 || symbol
->u
.syment
.n_sclass
== C_HIDEXT
)
2216 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2218 /* This is a csect entry. */
2219 fprintf (file
, "AUX ");
2220 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) != XTY_LD
)
2222 BFD_ASSERT (! aux
->fix_scnlen
);
2223 fprintf (file
, "val %5ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2227 fprintf (file
, "indx ");
2228 if (! aux
->fix_scnlen
)
2229 fprintf (file
, "%4ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2231 fprintf (file
, "%4ld",
2232 (long) (aux
->u
.auxent
.x_csect
.x_scnlen
.p
- table_base
));
2235 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2236 aux
->u
.auxent
.x_csect
.x_parmhash
,
2237 (unsigned int) aux
->u
.auxent
.x_csect
.x_snhash
,
2238 SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
),
2239 SMTYP_ALIGN (aux
->u
.auxent
.x_csect
.x_smtyp
),
2240 (unsigned int) aux
->u
.auxent
.x_csect
.x_smclas
,
2241 aux
->u
.auxent
.x_csect
.x_stab
,
2242 (unsigned int) aux
->u
.auxent
.x_csect
.x_snstab
);
2247 /* Return false to indicate that no special action was taken. */
2255 To write relocations, the back end steps though the
2256 canonical relocation table and create an
2257 @code{internal_reloc}. The symbol index to use is removed from
2258 the @code{offset} field in the symbol table supplied. The
2259 address comes directly from the sum of the section base
2260 address and the relocation offset; the type is dug directly
2261 from the howto field. Then the @code{internal_reloc} is
2262 swapped into the shape of an @code{external_reloc} and written
2269 static int compare_arelent_ptr
PARAMS ((const PTR
, const PTR
));
2271 /* AUX's ld wants relocations to be sorted */
2273 compare_arelent_ptr (x
, y
)
2277 const arelent
**a
= (const arelent
**) x
;
2278 const arelent
**b
= (const arelent
**) y
;
2279 bfd_size_type aadr
= (*a
)->address
;
2280 bfd_size_type badr
= (*b
)->address
;
2282 return (aadr
< badr
? -1 : badr
< aadr
? 1 : 0);
2285 #endif /* TARG_AUX */
2288 coff_write_relocs (abfd
, first_undef
)
2294 for (s
= abfd
->sections
; s
!= (asection
*) NULL
; s
= s
->next
)
2297 struct external_reloc dst
;
2303 /* sort relocations before we write them out */
2304 p
= (arelent
**) bfd_malloc (s
->reloc_count
* sizeof (arelent
*));
2305 if (p
== NULL
&& s
->reloc_count
> 0)
2307 memcpy (p
, s
->orelocation
, s
->reloc_count
* sizeof (arelent
*));
2308 qsort (p
, s
->reloc_count
, sizeof (arelent
*), compare_arelent_ptr
);
2311 if (bfd_seek (abfd
, s
->rel_filepos
, SEEK_SET
) != 0)
2313 for (i
= 0; i
< s
->reloc_count
; i
++)
2315 struct internal_reloc n
;
2317 memset ((PTR
) & n
, 0, sizeof (n
));
2319 /* Now we've renumbered the symbols we know where the
2320 undefined symbols live in the table. Check the reloc
2321 entries for symbols who's output bfd isn't the right one.
2322 This is because the symbol was undefined (which means
2323 that all the pointers are never made to point to the same
2324 place). This is a bad thing,'cause the symbols attached
2325 to the output bfd are indexed, so that the relocation
2326 entries know which symbol index they point to. So we
2327 have to look up the output symbol here. */
2329 if (q
->sym_ptr_ptr
[0]->the_bfd
!= abfd
)
2332 const char *sname
= q
->sym_ptr_ptr
[0]->name
;
2333 asymbol
**outsyms
= abfd
->outsymbols
;
2334 for (i
= first_undef
; outsyms
[i
]; i
++)
2336 const char *intable
= outsyms
[i
]->name
;
2337 if (strcmp (intable
, sname
) == 0) {
2338 /* got a hit, so repoint the reloc */
2339 q
->sym_ptr_ptr
= outsyms
+ i
;
2345 n
.r_vaddr
= q
->address
+ s
->vma
;
2348 /* The 29k const/consth reloc pair is a real kludge. The consth
2349 part doesn't have a symbol; it has an offset. So rebuilt
2351 if (q
->howto
->type
== R_IHCONST
)
2352 n
.r_symndx
= q
->addend
;
2357 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2358 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q
,s
))
2360 if (q
->sym_ptr_ptr
== bfd_abs_section_ptr
->symbol_ptr_ptr
)
2362 /* This is a relocation relative to the absolute symbol. */
2366 n
.r_symndx
= get_index ((*(q
->sym_ptr_ptr
)));
2367 /* Take notice if the symbol reloc points to a symbol
2368 we don't have in our symbol table. What should we
2370 if (n
.r_symndx
> obj_conv_table_size (abfd
))
2375 #ifdef SWAP_OUT_RELOC_OFFSET
2376 n
.r_offset
= q
->addend
;
2380 /* Work out reloc type from what is required */
2381 SELECT_RELOC (n
, q
->howto
);
2383 n
.r_type
= q
->howto
->type
;
2385 coff_swap_reloc_out (abfd
, &n
, &dst
);
2386 if (bfd_write ((PTR
) & dst
, 1, bfd_coff_relsz (abfd
), abfd
)
2387 != bfd_coff_relsz (abfd
))
2400 /* Set flags and magic number of a coff file from architecture and machine
2401 type. Result is true if we can represent the arch&type, false if not. */
2404 coff_set_flags (abfd
, magicp
, flagsp
)
2406 unsigned int *magicp ATTRIBUTE_UNUSED
;
2407 unsigned short *flagsp ATTRIBUTE_UNUSED
;
2409 switch (bfd_get_arch (abfd
))
2414 switch (bfd_get_mach (abfd
))
2416 case bfd_mach_z8001
:
2419 case bfd_mach_z8002
:
2433 *magicp
= I960ROMAGIC
;
2435 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2436 I960RWMAGIC); FIXME???
2438 switch (bfd_get_mach (abfd
))
2440 case bfd_mach_i960_core
:
2443 case bfd_mach_i960_kb_sb
:
2446 case bfd_mach_i960_mc
:
2449 case bfd_mach_i960_xa
:
2452 case bfd_mach_i960_ca
:
2455 case bfd_mach_i960_ka_sa
:
2458 case bfd_mach_i960_jx
:
2461 case bfd_mach_i960_hx
:
2474 case bfd_arch_tic30
:
2475 *magicp
= TIC30MAGIC
;
2479 #ifdef TICOFF_DEFAULT_MAGIC
2480 case TICOFF_TARGET_ARCH
:
2481 /* if there's no indication of which version we want, use the default */
2483 *magicp
= TICOFF_DEFAULT_MAGIC
;
2486 /* we may want to output in a different COFF version */
2487 switch (abfd
->xvec
->name
[4])
2490 *magicp
= TICOFF0MAGIC
;
2493 *magicp
= TICOFF1MAGIC
;
2496 *magicp
= TICOFF2MAGIC
;
2505 #ifdef TIC80_ARCH_MAGIC
2506 case bfd_arch_tic80
:
2507 *magicp
= TIC80_ARCH_MAGIC
;
2513 * magicp
= ARMPEMAGIC
;
2515 * magicp
= ARMMAGIC
;
2518 if (APCS_SET (abfd
))
2520 if (APCS_26_FLAG (abfd
))
2521 * flagsp
|= F_APCS26
;
2523 if (APCS_FLOAT_FLAG (abfd
))
2524 * flagsp
|= F_APCS_FLOAT
;
2526 if (PIC_FLAG (abfd
))
2529 if (INTERWORK_SET (abfd
) && INTERWORK_FLAG (abfd
))
2530 * flagsp
|= F_INTERWORK
;
2531 switch (bfd_get_mach (abfd
))
2533 case bfd_mach_arm_2
: * flagsp
|= F_ARM_2
; break;
2534 case bfd_mach_arm_2a
: * flagsp
|= F_ARM_2a
; break;
2535 case bfd_mach_arm_3
: * flagsp
|= F_ARM_3
; break;
2536 case bfd_mach_arm_3M
: * flagsp
|= F_ARM_3M
; break;
2537 case bfd_mach_arm_4
: * flagsp
|= F_ARM_4
; break;
2538 case bfd_mach_arm_4T
: * flagsp
|= F_ARM_4T
; break;
2539 case bfd_mach_arm_5
: * flagsp
|= F_ARM_5
; break;
2540 case bfd_mach_arm_5T
: * flagsp
|= F_ARM_5
; break; /* XXX - we do not have an F_ARM_5T */
2545 case bfd_arch_powerpc
:
2552 *magicp
= I386MAGIC
;
2554 /* Just overwrite the usual value if we're doing Lynx. */
2555 *magicp
= LYNXCOFFMAGIC
;
2562 *magicp
= I860MAGIC
;
2568 *magicp
= IA64MAGIC
;
2574 #ifdef APOLLOM68KMAGIC
2575 *magicp
= APOLLO_COFF_VERSION_NUMBER
;
2577 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2578 #ifdef NAMES_HAVE_UNDERSCORE
2579 *magicp
= MC68KBCSMAGIC
;
2581 *magicp
= MC68MAGIC
;
2585 /* Just overwrite the usual value if we're doing Lynx. */
2586 *magicp
= LYNXCOFFMAGIC
;
2594 *magicp
= MC88OMAGIC
;
2599 case bfd_arch_h8300
:
2600 switch (bfd_get_mach (abfd
))
2602 case bfd_mach_h8300
:
2603 *magicp
= H8300MAGIC
;
2605 case bfd_mach_h8300h
:
2606 *magicp
= H8300HMAGIC
;
2608 case bfd_mach_h8300s
:
2609 *magicp
= H8300SMAGIC
;
2615 #ifdef SH_ARCH_MAGIC_BIG
2617 #ifdef COFF_IMAGE_WITH_PE
2618 *magicp
= SH_ARCH_MAGIC_WINCE
;
2620 if (bfd_big_endian (abfd
))
2621 *magicp
= SH_ARCH_MAGIC_BIG
;
2623 *magicp
= SH_ARCH_MAGIC_LITTLE
;
2629 #ifdef MIPS_ARCH_MAGIC_WINCE
2631 *magicp
= MIPS_ARCH_MAGIC_WINCE
;
2637 case bfd_arch_sparc
:
2638 *magicp
= SPARCMAGIC
;
2640 /* Just overwrite the usual value if we're doing Lynx. */
2641 *magicp
= LYNXCOFFMAGIC
;
2648 case bfd_arch_h8500
:
2649 *magicp
= H8500MAGIC
;
2653 #ifdef A29K_MAGIC_BIG
2655 if (bfd_big_endian (abfd
))
2656 *magicp
= A29K_MAGIC_BIG
;
2658 *magicp
= A29K_MAGIC_LITTLE
;
2664 case bfd_arch_we32k
:
2665 *magicp
= WE32KMAGIC
;
2671 case bfd_arch_rs6000
:
2673 case bfd_arch_powerpc
:
2675 *magicp
= U802TOCMAGIC
;
2681 case bfd_arch_mcore
:
2682 * magicp
= MCOREMAGIC
;
2686 default: /* Unknown architecture */
2687 /* return false; -- fall through to "return false" below, to avoid
2688 "statement never reached" errors on the one below. */
2697 coff_set_arch_mach (abfd
, arch
, machine
)
2699 enum bfd_architecture arch
;
2700 unsigned long machine
;
2703 unsigned short dummy2
;
2705 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
2708 if (arch
!= bfd_arch_unknown
&&
2709 coff_set_flags (abfd
, &dummy1
, &dummy2
) != true)
2710 return false; /* We can't represent this type */
2712 return true; /* We're easy ... */
2715 #ifdef COFF_IMAGE_WITH_PE
2717 /* This is used to sort sections by VMA, as required by PE image
2720 static int sort_by_secaddr
PARAMS ((const PTR
, const PTR
));
2723 sort_by_secaddr (arg1
, arg2
)
2727 const asection
*a
= *(const asection
**) arg1
;
2728 const asection
*b
= *(const asection
**) arg2
;
2730 if (a
->vma
< b
->vma
)
2732 else if (a
->vma
> b
->vma
)
2738 #endif /* COFF_IMAGE_WITH_PE */
2740 /* Calculate the file position for each section. */
2743 #define ALIGN_SECTIONS_IN_FILE
2745 #if defined(TIC80COFF) || defined(TICOFF)
2746 #undef ALIGN_SECTIONS_IN_FILE
2750 coff_compute_section_file_positions (abfd
)
2754 asection
*previous
= (asection
*) NULL
;
2755 file_ptr sofar
= bfd_coff_filhsz (abfd
);
2756 boolean align_adjust
;
2757 #ifdef ALIGN_SECTIONS_IN_FILE
2762 /* On XCOFF, if we have symbols, set up the .debug section. */
2763 if (bfd_get_symcount (abfd
) > 0)
2766 bfd_size_type i
, symcount
;
2770 symcount
= bfd_get_symcount (abfd
);
2771 for (symp
= abfd
->outsymbols
, i
= 0; i
< symcount
; symp
++, i
++)
2773 coff_symbol_type
*cf
;
2775 cf
= coff_symbol_from (abfd
, *symp
);
2777 && cf
->native
!= NULL
2778 && SYMNAME_IN_DEBUG (&cf
->native
->u
.syment
))
2782 len
= strlen (bfd_asymbol_name (*symp
));
2791 dsec
= bfd_make_section_old_way (abfd
, ".debug");
2794 dsec
->_raw_size
= sz
;
2795 dsec
->flags
|= SEC_HAS_CONTENTS
;
2800 #ifdef COFF_IMAGE_WITH_PE
2802 if (coff_data (abfd
)->link_info
)
2804 page_size
= pe_data (abfd
)->pe_opthdr
.FileAlignment
;
2807 page_size
= PE_DEF_FILE_ALIGNMENT
;
2809 #ifdef COFF_PAGE_SIZE
2810 int page_size
= COFF_PAGE_SIZE
;
2814 if (bfd_get_start_address (abfd
))
2816 /* A start address may have been added to the original file. In this
2817 case it will need an optional header to record it. */
2818 abfd
->flags
|= EXEC_P
;
2821 if (abfd
->flags
& EXEC_P
)
2822 sofar
+= bfd_coff_aoutsz (abfd
);
2824 else if (xcoff_data (abfd
)->full_aouthdr
)
2825 sofar
+= bfd_coff_aoutsz (abfd
);
2827 sofar
+= SMALL_AOUTSZ
;
2830 sofar
+= abfd
->section_count
* bfd_coff_scnhsz (abfd
);
2833 /* XCOFF handles overflows in the reloc and line number count fields
2834 by allocating a new section header to hold the correct counts. */
2835 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2836 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2837 sofar
+= bfd_coff_scnhsz (abfd
);
2840 #ifdef COFF_IMAGE_WITH_PE
2842 /* PE requires the sections to be in memory order when listed in
2843 the section headers. It also does not like empty loadable
2844 sections. The sections apparently do not have to be in the
2845 right order in the image file itself, but we do need to get the
2846 target_index values right. */
2849 asection
**section_list
;
2854 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2857 /* We allocate an extra cell to simplify the final loop. */
2858 section_list
= bfd_malloc (sizeof (struct asection
*) * (count
+ 1));
2859 if (section_list
== NULL
)
2863 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2865 section_list
[i
] = current
;
2868 section_list
[i
] = NULL
;
2870 qsort (section_list
, count
, sizeof (asection
*), sort_by_secaddr
);
2872 /* Rethread the linked list into sorted order; at the same time,
2873 assign target_index values. */
2875 abfd
->sections
= section_list
[0];
2876 for (i
= 0; i
< count
; i
++)
2878 current
= section_list
[i
];
2879 current
->next
= section_list
[i
+ 1];
2881 /* Later, if the section has zero size, we'll be throwing it
2882 away, so we don't want to number it now. Note that having
2883 a zero size and having real contents are different
2884 concepts: .bss has no contents, but (usually) non-zero
2886 if (current
->_raw_size
== 0)
2888 /* Discard. However, it still might have (valid) symbols
2889 in it, so arbitrarily set it to section 1 (indexing is
2890 1-based here; usually .text). __end__ and other
2891 contents of .endsection really have this happen.
2892 FIXME: This seems somewhat dubious. */
2893 current
->target_index
= 1;
2896 current
->target_index
= target_index
++;
2899 free (section_list
);
2901 #else /* ! COFF_IMAGE_WITH_PE */
2903 /* Set the target_index field. */
2907 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2908 current
->target_index
= target_index
++;
2910 #endif /* ! COFF_IMAGE_WITH_PE */
2912 align_adjust
= false;
2913 for (current
= abfd
->sections
;
2914 current
!= (asection
*) NULL
;
2915 current
= current
->next
)
2917 #ifdef COFF_IMAGE_WITH_PE
2918 /* With PE we have to pad each section to be a multiple of its
2919 page size too, and remember both sizes. */
2920 if (coff_section_data (abfd
, current
) == NULL
)
2922 current
->used_by_bfd
=
2923 (PTR
) bfd_zalloc (abfd
, sizeof (struct coff_section_tdata
));
2924 if (current
->used_by_bfd
== NULL
)
2927 if (pei_section_data (abfd
, current
) == NULL
)
2929 coff_section_data (abfd
, current
)->tdata
=
2930 (PTR
) bfd_zalloc (abfd
, sizeof (struct pei_section_tdata
));
2931 if (coff_section_data (abfd
, current
)->tdata
== NULL
)
2934 if (pei_section_data (abfd
, current
)->virt_size
== 0)
2935 pei_section_data (abfd
, current
)->virt_size
= current
->_raw_size
;
2938 /* Only deal with sections which have contents. */
2939 if (!(current
->flags
& SEC_HAS_CONTENTS
))
2942 #ifdef COFF_IMAGE_WITH_PE
2943 /* Make sure we skip empty sections in a PE image. */
2944 if (current
->_raw_size
== 0)
2948 /* Align the sections in the file to the same boundary on
2949 which they are aligned in virtual memory. I960 doesn't
2950 do this (FIXME) so we can stay in sync with Intel. 960
2951 doesn't yet page from files... */
2952 #ifdef ALIGN_SECTIONS_IN_FILE
2953 if ((abfd
->flags
& EXEC_P
) != 0)
2955 /* make sure this section is aligned on the right boundary - by
2956 padding the previous section up if necessary */
2959 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
2960 if (previous
!= (asection
*) NULL
)
2962 previous
->_raw_size
+= sofar
- old_sofar
;
2968 /* In demand paged files the low order bits of the file offset
2969 must match the low order bits of the virtual address. */
2970 #ifdef COFF_PAGE_SIZE
2971 if ((abfd
->flags
& D_PAGED
) != 0
2972 && (current
->flags
& SEC_ALLOC
) != 0)
2973 sofar
+= (current
->vma
- sofar
) % page_size
;
2975 current
->filepos
= sofar
;
2977 #ifdef COFF_IMAGE_WITH_PE
2978 /* Set the padded size. */
2979 current
->_raw_size
= (current
->_raw_size
+ page_size
-1) & -page_size
;
2982 sofar
+= current
->_raw_size
;
2984 #ifdef ALIGN_SECTIONS_IN_FILE
2985 /* make sure that this section is of the right size too */
2986 if ((abfd
->flags
& EXEC_P
) == 0)
2988 bfd_size_type old_size
;
2990 old_size
= current
->_raw_size
;
2991 current
->_raw_size
= BFD_ALIGN (current
->_raw_size
,
2992 1 << current
->alignment_power
);
2993 align_adjust
= current
->_raw_size
!= old_size
;
2994 sofar
+= current
->_raw_size
- old_size
;
2999 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
3000 align_adjust
= sofar
!= old_sofar
;
3001 current
->_raw_size
+= sofar
- old_sofar
;
3005 #ifdef COFF_IMAGE_WITH_PE
3006 /* For PE we need to make sure we pad out to the aligned
3007 _raw_size, in case the caller only writes out data to the
3008 unaligned _raw_size. */
3009 if (pei_section_data (abfd
, current
)->virt_size
< current
->_raw_size
)
3010 align_adjust
= true;
3014 /* Force .lib sections to start at zero. The vma is then
3015 incremented in coff_set_section_contents. This is right for
3017 if (strcmp (current
->name
, _LIB
) == 0)
3018 bfd_set_section_vma (abfd
, current
, 0);
3024 /* It is now safe to write to the output file. If we needed an
3025 alignment adjustment for the last section, then make sure that
3026 there is a byte at offset sofar. If there are no symbols and no
3027 relocs, then nothing follows the last section. If we don't force
3028 the last byte out, then the file may appear to be truncated. */
3034 if (bfd_seek (abfd
, sofar
- 1, SEEK_SET
) != 0
3035 || bfd_write (&b
, 1, 1, abfd
) != 1)
3039 /* Make sure the relocations are aligned. We don't need to make
3040 sure that this byte exists, because it will only matter if there
3041 really are relocs. */
3042 sofar
= BFD_ALIGN (sofar
, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER
);
3044 obj_relocbase (abfd
) = sofar
;
3045 abfd
->output_has_begun
= true;
3052 /* This can never work, because it is called too late--after the
3053 section positions have been set. I can't figure out what it is
3054 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3056 /* If .file, .text, .data, .bss symbols are missing, add them. */
3057 /* @@ Should we only be adding missing symbols, or overriding the aux
3058 values for existing section symbols? */
3060 coff_add_missing_symbols (abfd
)
3063 unsigned int nsyms
= bfd_get_symcount (abfd
);
3064 asymbol
**sympp
= abfd
->outsymbols
;
3067 int need_text
= 1, need_data
= 1, need_bss
= 1, need_file
= 1;
3069 for (i
= 0; i
< nsyms
; i
++)
3071 coff_symbol_type
*csym
= coff_symbol_from (abfd
, sympp
[i
]);
3075 /* only do this if there is a coff representation of the input
3077 if (csym
->native
&& csym
->native
->u
.syment
.n_sclass
== C_FILE
)
3082 name
= csym
->symbol
.name
;
3085 if (!strcmp (name
, _TEXT
))
3088 else if (!strcmp (name
, ".wtext"))
3091 else if (!strcmp (name
, _DATA
))
3093 else if (!strcmp (name
, _BSS
))
3097 /* Now i == bfd_get_symcount (abfd). */
3098 /* @@ For now, don't deal with .file symbol. */
3101 if (!need_text
&& !need_data
&& !need_bss
&& !need_file
)
3103 nsyms
+= need_text
+ need_data
+ need_bss
+ need_file
;
3104 sympp2
= (asymbol
**) bfd_alloc (abfd
, nsyms
* sizeof (asymbol
*));
3107 memcpy (sympp2
, sympp
, i
* sizeof (asymbol
*));
3110 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3114 sympp2
[i
++] = coff_section_symbol (abfd
, _TEXT
);
3116 sympp2
[i
++] = coff_section_symbol (abfd
, _DATA
);
3118 sympp2
[i
++] = coff_section_symbol (abfd
, _BSS
);
3119 BFD_ASSERT (i
== nsyms
);
3120 bfd_set_symtab (abfd
, sympp2
, nsyms
);
3129 coff_write_object_contents (abfd
)
3133 boolean hasrelocs
= false;
3134 boolean haslinno
= false;
3135 boolean hasdebug
= false;
3137 file_ptr reloc_base
;
3138 file_ptr lineno_base
;
3140 unsigned long reloc_size
= 0;
3141 unsigned long lnno_size
= 0;
3142 boolean long_section_names
;
3143 asection
*text_sec
= NULL
;
3144 asection
*data_sec
= NULL
;
3145 asection
*bss_sec
= NULL
;
3146 struct internal_filehdr internal_f
;
3147 struct internal_aouthdr internal_a
;
3148 #ifdef COFF_LONG_SECTION_NAMES
3149 size_t string_size
= STRING_SIZE_SIZE
;
3152 bfd_set_error (bfd_error_system_call
);
3154 /* Make a pass through the symbol table to count line number entries and
3155 put them into the correct asections */
3157 lnno_size
= coff_count_linenumbers (abfd
) * bfd_coff_linesz (abfd
);
3159 if (abfd
->output_has_begun
== false)
3161 if (! coff_compute_section_file_positions (abfd
))
3165 reloc_base
= obj_relocbase (abfd
);
3167 /* Work out the size of the reloc and linno areas */
3169 for (current
= abfd
->sections
; current
!= NULL
; current
=
3171 reloc_size
+= current
->reloc_count
* bfd_coff_relsz (abfd
);
3173 lineno_base
= reloc_base
+ reloc_size
;
3174 sym_base
= lineno_base
+ lnno_size
;
3176 /* Indicate in each section->line_filepos its actual file address */
3177 for (current
= abfd
->sections
; current
!= NULL
; current
=
3180 if (current
->lineno_count
)
3182 current
->line_filepos
= lineno_base
;
3183 current
->moving_line_filepos
= lineno_base
;
3184 lineno_base
+= current
->lineno_count
* bfd_coff_linesz (abfd
);
3188 current
->line_filepos
= 0;
3190 if (current
->reloc_count
)
3192 current
->rel_filepos
= reloc_base
;
3193 reloc_base
+= current
->reloc_count
* bfd_coff_relsz (abfd
);
3197 current
->rel_filepos
= 0;
3201 /* Write section headers to the file. */
3202 internal_f
.f_nscns
= 0;
3204 if ((abfd
->flags
& EXEC_P
) != 0)
3205 scn_base
= bfd_coff_filhsz (abfd
) + bfd_coff_aoutsz (abfd
);
3208 scn_base
= bfd_coff_filhsz (abfd
);
3210 if (xcoff_data (abfd
)->full_aouthdr
)
3211 scn_base
+= bfd_coff_aoutsz (abfd
);
3213 scn_base
+= SMALL_AOUTSZ
;
3217 if (bfd_seek (abfd
, scn_base
, SEEK_SET
) != 0)
3220 long_section_names
= false;
3221 for (current
= abfd
->sections
;
3223 current
= current
->next
)
3225 struct internal_scnhdr section
;
3226 boolean is_reloc_section
= false;
3228 #ifdef COFF_IMAGE_WITH_PE
3229 if (strcmp (current
->name
, ".reloc") == 0)
3231 is_reloc_section
= true;
3233 pe_data (abfd
)->has_reloc_section
= 1;
3237 internal_f
.f_nscns
++;
3239 strncpy (section
.s_name
, current
->name
, SCNNMLEN
);
3241 #ifdef COFF_LONG_SECTION_NAMES
3242 /* Handle long section names as in PE. This must be compatible
3243 with the code in coff_write_symbols and _bfd_coff_final_link. */
3247 len
= strlen (current
->name
);
3250 memset (section
.s_name
, 0, SCNNMLEN
);
3251 sprintf (section
.s_name
, "/%lu", (unsigned long) string_size
);
3252 string_size
+= len
+ 1;
3253 long_section_names
= true;
3259 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3260 Ian Taylor <ian@cygnus.com>. */
3261 if (strcmp (current
->name
, _LIB
) == 0)
3262 section
.s_vaddr
= 0;
3265 section
.s_vaddr
= current
->vma
;
3266 section
.s_paddr
= current
->lma
;
3267 section
.s_size
= current
->_raw_size
;
3268 #ifdef coff_get_section_load_page
3269 section
.s_page
= coff_get_section_load_page (current
);
3273 section
.s_paddr
= 0;
3275 #ifdef COFF_IMAGE_WITH_PE
3276 /* Reminder: s_paddr holds the virtual size of the section. */
3277 if (coff_section_data (abfd
, current
) != NULL
3278 && pei_section_data (abfd
, current
) != NULL
)
3279 section
.s_paddr
= pei_section_data (abfd
, current
)->virt_size
;
3281 section
.s_paddr
= 0;
3285 If this section has no size or is unloadable then the scnptr
3288 if (current
->_raw_size
== 0 ||
3289 (current
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
3291 section
.s_scnptr
= 0;
3295 section
.s_scnptr
= current
->filepos
;
3297 section
.s_relptr
= current
->rel_filepos
;
3298 section
.s_lnnoptr
= current
->line_filepos
;
3299 section
.s_nreloc
= current
->reloc_count
;
3300 section
.s_nlnno
= current
->lineno_count
;
3301 #ifndef COFF_IMAGE_WITH_PE
3302 /* In PEI, relocs come in the .reloc section. */
3303 if (current
->reloc_count
!= 0)
3306 if (current
->lineno_count
!= 0)
3308 if ((current
->flags
& SEC_DEBUGGING
) != 0
3309 && ! is_reloc_section
)
3313 /* Indicate the use of an XCOFF overflow section header. */
3314 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3316 section
.s_nreloc
= 0xffff;
3317 section
.s_nlnno
= 0xffff;
3321 section
.s_flags
= sec_to_styp_flags (current
->name
, current
->flags
);
3323 if (!strcmp (current
->name
, _TEXT
))
3327 else if (!strcmp (current
->name
, _DATA
))
3331 else if (!strcmp (current
->name
, _BSS
))
3337 section
.s_align
= (current
->alignment_power
3338 ? 1 << current
->alignment_power
3342 /* TI COFF puts the alignment power in bits 8-11 of the flags */
3343 section
.s_flags
|= (current
->alignment_power
& 0xF) << 8;
3345 #ifdef COFF_ENCODE_ALIGNMENT
3346 COFF_ENCODE_ALIGNMENT(section
, current
->alignment_power
);
3349 #ifdef COFF_IMAGE_WITH_PE
3350 /* Suppress output of the sections if they are null. ld
3351 includes the bss and data sections even if there is no size
3352 assigned to them. NT loader doesn't like it if these section
3353 headers are included if the sections themselves are not
3354 needed. See also coff_compute_section_file_positions. */
3355 if (section
.s_size
== 0)
3356 internal_f
.f_nscns
--;
3361 if (coff_swap_scnhdr_out (abfd
, §ion
, &buff
) == 0
3362 || bfd_write ((PTR
) (&buff
), 1, bfd_coff_scnhsz (abfd
), abfd
)
3363 != bfd_coff_scnhsz (abfd
))
3368 /* PE stores COMDAT section information in the symbol table. If
3369 this section is supposed to have some COMDAT info, track down
3370 the symbol in the symbol table and modify it. */
3371 if ((current
->flags
& SEC_LINK_ONCE
) != 0)
3373 unsigned int i
, count
;
3375 coff_symbol_type
*csym
= NULL
;
3379 count
= bfd_get_symcount (abfd
);
3380 for (i
= 0, psym
= abfd
->outsymbols
; i
< count
; i
++, psym
++)
3382 if ((*psym
)->section
!= current
)
3385 /* Remember the location of the first symbol in this
3387 if (psymsec
== NULL
)
3390 /* See if this is the section symbol. */
3391 if (strcmp ((*psym
)->name
, current
->name
) == 0)
3393 csym
= coff_symbol_from (abfd
, *psym
);
3395 || csym
->native
== NULL
3396 || csym
->native
->u
.syment
.n_numaux
< 1
3397 || csym
->native
->u
.syment
.n_sclass
!= C_STAT
3398 || csym
->native
->u
.syment
.n_type
!= T_NULL
)
3401 /* Here *PSYM is the section symbol for CURRENT. */
3408 Note that we might not if we're converting the file from
3409 some other object file format. */
3412 combined_entry_type
*aux
;
3414 /* We don't touch the x_checksum field. The
3415 x_associated field is not currently supported. */
3417 aux
= csym
->native
+ 1;
3418 switch (current
->flags
& SEC_LINK_DUPLICATES
)
3420 case SEC_LINK_DUPLICATES_DISCARD
:
3421 aux
->u
.auxent
.x_scn
.x_comdat
= IMAGE_COMDAT_SELECT_ANY
;
3424 case SEC_LINK_DUPLICATES_ONE_ONLY
:
3425 aux
->u
.auxent
.x_scn
.x_comdat
=
3426 IMAGE_COMDAT_SELECT_NODUPLICATES
;
3429 case SEC_LINK_DUPLICATES_SAME_SIZE
:
3430 aux
->u
.auxent
.x_scn
.x_comdat
=
3431 IMAGE_COMDAT_SELECT_SAME_SIZE
;
3434 case SEC_LINK_DUPLICATES_SAME_CONTENTS
:
3435 aux
->u
.auxent
.x_scn
.x_comdat
=
3436 IMAGE_COMDAT_SELECT_EXACT_MATCH
;
3440 /* The COMDAT symbol must be the first symbol from this
3441 section in the symbol table. In order to make this
3442 work, we move the COMDAT symbol before the first
3443 symbol we found in the search above. It's OK to
3444 rearrange the symbol table at this point, because
3445 coff_renumber_symbols is going to rearrange it
3446 further and fix up all the aux entries. */
3447 if (psym
!= psymsec
)
3453 for (pcopy
= psym
; pcopy
> psymsec
; pcopy
--)
3454 pcopy
[0] = pcopy
[-1];
3459 #endif /* COFF_WITH_PE */
3463 /* XCOFF handles overflows in the reloc and line number count fields
3464 by creating a new section header to hold the correct values. */
3465 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
3467 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3469 struct internal_scnhdr scnhdr
;
3472 internal_f
.f_nscns
++;
3473 strncpy (&(scnhdr
.s_name
[0]), current
->name
, 8);
3474 scnhdr
.s_paddr
= current
->reloc_count
;
3475 scnhdr
.s_vaddr
= current
->lineno_count
;
3477 scnhdr
.s_scnptr
= 0;
3478 scnhdr
.s_relptr
= current
->rel_filepos
;
3479 scnhdr
.s_lnnoptr
= current
->line_filepos
;
3480 scnhdr
.s_nreloc
= current
->target_index
;
3481 scnhdr
.s_nlnno
= current
->target_index
;
3482 scnhdr
.s_flags
= STYP_OVRFLO
;
3483 if (coff_swap_scnhdr_out (abfd
, &scnhdr
, &buff
) == 0
3484 || bfd_write ((PTR
) &buff
, 1, bfd_coff_scnhsz (abfd
), abfd
)
3485 != bfd_coff_scnhsz (abfd
))
3491 /* OK, now set up the filehdr... */
3493 /* Don't include the internal abs section in the section count */
3496 We will NOT put a fucking timestamp in the header here. Every time you
3497 put it back, I will come in and take it out again. I'm sorry. This
3498 field does not belong here. We fill it with a 0 so it compares the
3499 same but is not a reasonable time. -- gnu@cygnus.com
3501 internal_f
.f_timdat
= 0;
3503 internal_f
.f_flags
= 0;
3505 if (abfd
->flags
& EXEC_P
)
3506 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
3509 internal_f
.f_opthdr
= 0;
3511 if (xcoff_data (abfd
)->full_aouthdr
)
3512 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
3514 internal_f
.f_opthdr
= SMALL_AOUTSZ
;
3519 internal_f
.f_flags
|= F_RELFLG
;
3521 internal_f
.f_flags
|= F_LNNO
;
3522 if (abfd
->flags
& EXEC_P
)
3523 internal_f
.f_flags
|= F_EXEC
;
3524 #ifdef COFF_IMAGE_WITH_PE
3526 internal_f
.f_flags
|= IMAGE_FILE_DEBUG_STRIPPED
;
3529 #ifndef COFF_WITH_PE
3530 if (bfd_little_endian (abfd
))
3531 internal_f
.f_flags
|= F_AR32WR
;
3533 internal_f
.f_flags
|= F_AR32W
;
3537 /* target id is used in TI COFF v1 and later; COFF0 won't use this field,
3538 but it doesn't hurt to set it internally */
3539 internal_f
.f_target_id
= TI_TARGET_ID
;
3541 #ifdef TIC80_TARGET_ID
3542 internal_f
.f_target_id
= TIC80_TARGET_ID
;
3546 FIXME, should do something about the other byte orders and
3551 if ((abfd
->flags
& DYNAMIC
) != 0)
3552 internal_f
.f_flags
|= F_SHROBJ
;
3553 if (bfd_get_section_by_name (abfd
, _LOADER
) != NULL
)
3554 internal_f
.f_flags
|= F_DYNLOAD
;
3557 memset (&internal_a
, 0, sizeof internal_a
);
3559 /* Set up architecture-dependent stuff */
3562 unsigned int magic
= 0;
3563 unsigned short flags
= 0;
3564 coff_set_flags (abfd
, &magic
, &flags
);
3565 internal_f
.f_magic
= magic
;
3566 internal_f
.f_flags
|= flags
;
3567 /* ...and the "opt"hdr... */
3570 #ifdef ULTRA3 /* NYU's machine */
3571 /* FIXME: This is a bogus check. I really want to see if there
3572 * is a .shbss or a .shdata section, if so then set the magic
3573 * number to indicate a shared data executable.
3575 if (internal_f
.f_nscns
>= 7)
3576 internal_a
.magic
= SHMAGIC
; /* Shared magic */
3579 internal_a
.magic
= NMAGIC
; /* Assume separate i/d */
3580 #define __A_MAGIC_SET__
3582 #ifdef TICOFF_AOUT_MAGIC
3583 internal_a
.magic
= TICOFF_AOUT_MAGIC
;
3584 #define __A_MAGIC_SET__
3587 internal_a
.magic
= TIC80_ARCH_MAGIC
;
3588 #define __A_MAGIC_SET__
3591 /* FIXME: What are the a.out magic numbers for the i860? */
3592 internal_a
.magic
= 0;
3593 #define __A_MAGIC_SET__
3596 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
3597 #define __A_MAGIC_SET__
3600 #define __A_MAGIC_SET__
3601 internal_a
.magic
= PAGEMAGICBCS
;
3605 #define __A_MAGIC_SET__
3606 internal_a
.magic
= APOLLO_COFF_VERSION_NUMBER
;
3609 #if defined(M68) || defined(WE32K) || defined(M68K)
3610 #define __A_MAGIC_SET__
3612 internal_a
.magic
= LYNXCOFFMAGIC
;
3614 #if defined(TARG_AUX)
3615 internal_a
.magic
= (abfd
->flags
& D_PAGED
? PAGEMAGICPEXECPAGED
:
3616 abfd
->flags
& WP_TEXT
? PAGEMAGICPEXECSWAPPED
:
3617 PAGEMAGICEXECSWAPPED
);
3619 #if defined (PAGEMAGICPEXECPAGED)
3620 internal_a
.magic
= PAGEMAGICPEXECPAGED
;
3622 #endif /* TARG_AUX */
3624 #endif /* M68 || WE32K || M68K */
3627 #define __A_MAGIC_SET__
3628 internal_a
.magic
= ZMAGIC
;
3632 #define __A_MAGIC_SET__
3633 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
3636 #if defined MCORE_PE
3637 #define __A_MAGIC_SET__
3638 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
3642 #define __A_MAGIC_SET__
3644 internal_a
.magic
= LYNXCOFFMAGIC
;
3646 internal_a
.magic
= ZMAGIC
;
3651 #define __A_MAGIC_SET__
3652 internal_a
.magic
= ZMAGIC
;
3656 #define __A_MAGIC_SET__
3658 internal_a
.magic
= LYNXCOFFMAGIC
;
3663 #define __A_MAGIC_SET__
3664 internal_a
.magic
= (abfd
->flags
& D_PAGED
) ? RS6K_AOUTHDR_ZMAGIC
:
3665 (abfd
->flags
& WP_TEXT
) ? RS6K_AOUTHDR_NMAGIC
:
3666 RS6K_AOUTHDR_OMAGIC
;
3669 #if defined(SH) && defined(COFF_WITH_PE)
3670 #define __A_MAGIC_SET__
3671 internal_a
.magic
= SH_PE_MAGIC
;
3674 #if defined(MIPS) && defined(COFF_WITH_PE)
3675 #define __A_MAGIC_SET__
3676 internal_a
.magic
= MIPS_PE_MAGIC
;
3679 #ifndef __A_MAGIC_SET__
3680 #include "Your aouthdr magic number is not being set!"
3682 #undef __A_MAGIC_SET__
3686 /* FIXME: Does anybody ever set this to another value? */
3687 internal_a
.vstamp
= 0;
3689 /* Now should write relocs, strings, syms */
3690 obj_sym_filepos (abfd
) = sym_base
;
3692 if (bfd_get_symcount (abfd
) != 0)
3696 if (!coff_add_missing_symbols (abfd
))
3699 if (!coff_renumber_symbols (abfd
, &firstundef
))
3701 coff_mangle_symbols (abfd
);
3702 if (! coff_write_symbols (abfd
))
3704 if (! coff_write_linenumbers (abfd
))
3706 if (! coff_write_relocs (abfd
, firstundef
))
3709 #ifdef COFF_LONG_SECTION_NAMES
3710 else if (long_section_names
)
3712 /* If we have long section names we have to write out the string
3713 table even if there are no symbols. */
3714 if (! coff_write_symbols (abfd
))
3718 #ifdef COFF_IMAGE_WITH_PE
3720 else if ((abfd
->flags
& EXEC_P
) != 0)
3724 /* PowerPC PE appears to require that all executable files be
3725 rounded up to the page size. */
3728 BFD_ALIGN (sym_base
, COFF_PAGE_SIZE
) - 1,
3730 || bfd_write (&b
, 1, 1, abfd
) != 1)
3736 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
3737 backend linker, and obj_raw_syment_count is not valid until after
3738 coff_write_symbols is called. */
3739 if (obj_raw_syment_count (abfd
) != 0)
3741 internal_f
.f_symptr
= sym_base
;
3743 /* AIX appears to require that F_RELFLG not be set if there are
3744 local symbols but no relocations. */
3745 internal_f
.f_flags
&=~ F_RELFLG
;
3750 if (long_section_names
)
3751 internal_f
.f_symptr
= sym_base
;
3753 internal_f
.f_symptr
= 0;
3754 internal_f
.f_flags
|= F_LSYMS
;
3759 internal_a
.tsize
= bfd_get_section_size_before_reloc (text_sec
);
3760 internal_a
.text_start
= internal_a
.tsize
? text_sec
->vma
: 0;
3764 internal_a
.dsize
= bfd_get_section_size_before_reloc (data_sec
);
3765 internal_a
.data_start
= internal_a
.dsize
? data_sec
->vma
: 0;
3769 internal_a
.bsize
= bfd_get_section_size_before_reloc (bss_sec
);
3770 if (internal_a
.bsize
&& bss_sec
->vma
< internal_a
.data_start
)
3771 internal_a
.data_start
= bss_sec
->vma
;
3774 internal_a
.entry
= bfd_get_start_address (abfd
);
3775 internal_f
.f_nsyms
= obj_raw_syment_count (abfd
);
3778 if (xcoff_data (abfd
)->full_aouthdr
)
3781 asection
*loader_sec
;
3783 internal_a
.vstamp
= 1;
3785 internal_a
.o_snentry
= xcoff_data (abfd
)->snentry
;
3786 if (internal_a
.o_snentry
== 0)
3787 internal_a
.entry
= (bfd_vma
) -1;
3789 if (text_sec
!= NULL
)
3791 internal_a
.o_sntext
= text_sec
->target_index
;
3792 internal_a
.o_algntext
= bfd_get_section_alignment (abfd
, text_sec
);
3796 internal_a
.o_sntext
= 0;
3797 internal_a
.o_algntext
= 0;
3799 if (data_sec
!= NULL
)
3801 internal_a
.o_sndata
= data_sec
->target_index
;
3802 internal_a
.o_algndata
= bfd_get_section_alignment (abfd
, data_sec
);
3806 internal_a
.o_sndata
= 0;
3807 internal_a
.o_algndata
= 0;
3809 loader_sec
= bfd_get_section_by_name (abfd
, ".loader");
3810 if (loader_sec
!= NULL
)
3811 internal_a
.o_snloader
= loader_sec
->target_index
;
3813 internal_a
.o_snloader
= 0;
3814 if (bss_sec
!= NULL
)
3815 internal_a
.o_snbss
= bss_sec
->target_index
;
3817 internal_a
.o_snbss
= 0;
3819 toc
= xcoff_data (abfd
)->toc
;
3820 internal_a
.o_toc
= toc
;
3821 internal_a
.o_sntoc
= xcoff_data (abfd
)->sntoc
;
3823 internal_a
.o_modtype
= xcoff_data (abfd
)->modtype
;
3824 if (xcoff_data (abfd
)->cputype
!= -1)
3825 internal_a
.o_cputype
= xcoff_data (abfd
)->cputype
;
3828 switch (bfd_get_arch (abfd
))
3830 case bfd_arch_rs6000
:
3831 internal_a
.o_cputype
= 4;
3833 case bfd_arch_powerpc
:
3834 if (bfd_get_mach (abfd
) == 0)
3835 internal_a
.o_cputype
= 3;
3837 internal_a
.o_cputype
= 1;
3843 internal_a
.o_maxstack
= xcoff_data (abfd
)->maxstack
;
3844 internal_a
.o_maxdata
= xcoff_data (abfd
)->maxdata
;
3848 /* now write them */
3849 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
3854 bfd_size_type amount
;
3856 buff
= bfd_malloc (bfd_coff_filhsz (abfd
));
3860 coff_swap_filehdr_out (abfd
, (PTR
) & internal_f
, (PTR
) buff
);
3861 amount
= bfd_write ((PTR
) buff
, 1, bfd_coff_filhsz (abfd
), abfd
);
3865 if (amount
!= bfd_coff_filhsz (abfd
))
3869 if (abfd
->flags
& EXEC_P
)
3871 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
3872 include/coff/pe.h sets AOUTSZ == sizeof(PEAOUTHDR)) */
3874 bfd_size_type amount
;
3876 buff
= bfd_malloc (bfd_coff_aoutsz (abfd
));
3880 coff_swap_aouthdr_out (abfd
, (PTR
) & internal_a
, (PTR
) buff
);
3881 amount
= bfd_write ((PTR
) buff
, 1, bfd_coff_aoutsz (abfd
), abfd
);
3885 if (amount
!= bfd_coff_aoutsz (abfd
))
3894 /* XCOFF seems to always write at least a small a.out header. */
3895 coff_swap_aouthdr_out (abfd
, (PTR
) &internal_a
, (PTR
) &buff
);
3896 if (xcoff_data (abfd
)->full_aouthdr
)
3897 size
= bfd_coff_aoutsz (abfd
);
3899 size
= SMALL_AOUTSZ
;
3900 if (bfd_write ((PTR
) &buff
, 1, size
, abfd
) != size
)
3909 coff_set_section_contents (abfd
, section
, location
, offset
, count
)
3914 bfd_size_type count
;
3916 if (abfd
->output_has_begun
== false) /* set by bfd.c handler */
3918 if (! coff_compute_section_file_positions (abfd
))
3922 #if defined(_LIB) && !defined(TARG_AUX)
3924 /* The physical address field of a .lib section is used to hold the
3925 number of shared libraries in the section. This code counts the
3926 number of sections being written, and increments the lma field
3929 I have found no documentation on the contents of this section.
3930 Experimentation indicates that the section contains zero or more
3931 records, each of which has the following structure:
3933 - a (four byte) word holding the length of this record, in words,
3934 - a word that always seems to be set to "2",
3935 - the path to a shared library, null-terminated and then padded
3936 to a whole word boundary.
3938 bfd_assert calls have been added to alert if an attempt is made
3939 to write a section which doesn't follow these assumptions. The
3940 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
3941 <robertl@arnet.com> (Thanks!).
3943 Gvran Uddeborg <gvran@uddeborg.pp.se> */
3945 if (strcmp (section
->name
, _LIB
) == 0)
3947 bfd_byte
*rec
, *recend
;
3949 rec
= (bfd_byte
*) location
;
3950 recend
= rec
+ count
;
3951 while (rec
< recend
)
3954 rec
+= bfd_get_32 (abfd
, rec
) * 4;
3957 BFD_ASSERT (rec
== recend
);
3962 /* Don't write out bss sections - one way to do this is to
3963 see if the filepos has not been set. */
3964 if (section
->filepos
== 0)
3967 if (bfd_seek (abfd
, (file_ptr
) (section
->filepos
+ offset
), SEEK_SET
) != 0)
3972 return (bfd_write (location
, 1, count
, abfd
) == count
) ? true : false;
3978 coff_close_and_cleanup (abfd
)
3981 if (!bfd_read_p (abfd
))
3982 switch (abfd
->format
)
3985 if (!_bfd_write_archive_contents (abfd
))
3989 if (!coff_write_object_contents (abfd
))
3993 bfd_set_error (bfd_error_invalid_operation
);
3997 /* We depend on bfd_close to free all the memory on the objalloc. */
4004 buy_and_read (abfd
, where
, seek_direction
, size
)
4010 PTR area
= (PTR
) bfd_alloc (abfd
, size
);
4013 if (bfd_seek (abfd
, where
, seek_direction
) != 0
4014 || bfd_read (area
, 1, size
, abfd
) != size
)
4017 } /* buy_and_read() */
4023 Creating the linenumber table is done by reading in the entire
4024 coff linenumber table, and creating another table for internal use.
4026 A coff linenumber table is structured so that each function
4027 is marked as having a line number of 0. Each line within the
4028 function is an offset from the first line in the function. The
4029 base of the line number information for the table is stored in
4030 the symbol associated with the function.
4032 Note: The PE format uses line number 0 for a flag indicating a
4035 The information is copied from the external to the internal
4036 table, and each symbol which marks a function is marked by
4039 How does this work ?
4044 coff_slurp_line_table (abfd
, asect
)
4048 LINENO
*native_lineno
;
4049 alent
*lineno_cache
;
4051 BFD_ASSERT (asect
->lineno
== (alent
*) NULL
);
4053 native_lineno
= (LINENO
*) buy_and_read (abfd
,
4054 asect
->line_filepos
,
4056 (size_t) (bfd_coff_linesz (abfd
) *
4057 asect
->lineno_count
));
4059 (alent
*) bfd_alloc (abfd
, (size_t) ((asect
->lineno_count
+ 1) * sizeof (alent
)));
4060 if (lineno_cache
== NULL
)
4064 unsigned int counter
= 0;
4065 alent
*cache_ptr
= lineno_cache
;
4066 LINENO
*src
= native_lineno
;
4068 while (counter
< asect
->lineno_count
)
4070 struct internal_lineno dst
;
4071 coff_swap_lineno_in (abfd
, src
, &dst
);
4072 cache_ptr
->line_number
= dst
.l_lnno
;
4074 if (cache_ptr
->line_number
== 0)
4078 coff_symbol_type
*sym
;
4081 symndx
= dst
.l_addr
.l_symndx
;
4083 || (unsigned long) symndx
>= obj_raw_syment_count (abfd
))
4085 (*_bfd_error_handler
)
4086 (_("%s: warning: illegal symbol index %ld in line numbers"),
4087 bfd_get_filename (abfd
), dst
.l_addr
.l_symndx
);
4091 /* FIXME: We should not be casting between ints and
4092 pointers like this. */
4093 sym
= ((coff_symbol_type
*)
4094 ((symndx
+ obj_raw_syments (abfd
))
4095 ->u
.syment
._n
._n_n
._n_zeroes
));
4096 cache_ptr
->u
.sym
= (asymbol
*) sym
;
4097 if (sym
->lineno
!= NULL
&& ! warned
)
4099 (*_bfd_error_handler
)
4100 (_("%s: warning: duplicate line number information for `%s'"),
4101 bfd_get_filename (abfd
),
4102 bfd_asymbol_name (&sym
->symbol
));
4104 sym
->lineno
= cache_ptr
;
4108 cache_ptr
->u
.offset
= dst
.l_addr
.l_paddr
4109 - bfd_section_vma (abfd
, asect
);
4110 } /* If no linenumber expect a symbol index */
4116 cache_ptr
->line_number
= 0;
4119 asect
->lineno
= lineno_cache
;
4120 /* FIXME, free native_lineno here, or use alloca or something. */
4124 /* Slurp in the symbol table, converting it to generic form. Note
4125 that if coff_relocate_section is defined, the linker will read
4126 symbols via coff_link_add_symbols, rather than via this routine. */
4129 coff_slurp_symbol_table (abfd
)
4132 combined_entry_type
*native_symbols
;
4133 coff_symbol_type
*cached_area
;
4134 unsigned int *table_ptr
;
4136 unsigned int number_of_symbols
= 0;
4138 if (obj_symbols (abfd
))
4141 /* Read in the symbol table */
4142 if ((native_symbols
= coff_get_normalized_symtab (abfd
)) == NULL
)
4147 /* Allocate enough room for all the symbols in cached form */
4148 cached_area
= ((coff_symbol_type
*)
4150 (obj_raw_syment_count (abfd
)
4151 * sizeof (coff_symbol_type
))));
4153 if (cached_area
== NULL
)
4155 table_ptr
= ((unsigned int *)
4157 (obj_raw_syment_count (abfd
)
4158 * sizeof (unsigned int))));
4160 if (table_ptr
== NULL
)
4164 coff_symbol_type
*dst
= cached_area
;
4165 unsigned int last_native_index
= obj_raw_syment_count (abfd
);
4166 unsigned int this_index
= 0;
4167 while (this_index
< last_native_index
)
4169 combined_entry_type
*src
= native_symbols
+ this_index
;
4170 table_ptr
[this_index
] = number_of_symbols
;
4171 dst
->symbol
.the_bfd
= abfd
;
4173 dst
->symbol
.name
= (char *) (src
->u
.syment
._n
._n_n
._n_offset
);
4174 /* We use the native name field to point to the cached field. */
4175 src
->u
.syment
._n
._n_n
._n_zeroes
= (long) dst
;
4176 dst
->symbol
.section
= coff_section_from_bfd_index (abfd
,
4177 src
->u
.syment
.n_scnum
);
4178 dst
->symbol
.flags
= 0;
4179 dst
->done_lineno
= false;
4181 switch (src
->u
.syment
.n_sclass
)
4186 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
4187 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
4188 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4190 /* Fall through to next case */
4198 case C_THUMBEXTFUNC
:
4204 case C_SYSTEM
: /* System Wide variable */
4207 /* In PE, 0x68 (104) denotes a section symbol */
4209 /* In PE, 0x69 (105) denotes a weak external symbol. */
4212 switch (coff_classify_symbol (abfd
, &src
->u
.syment
))
4214 case COFF_SYMBOL_GLOBAL
:
4215 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
4216 #if defined COFF_WITH_PE
4217 /* PE sets the symbol to a value relative to the
4218 start of the section. */
4219 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4221 dst
->symbol
.value
= (src
->u
.syment
.n_value
4222 - dst
->symbol
.section
->vma
);
4224 if (ISFCN ((src
->u
.syment
.n_type
)))
4226 /* A function ext does not go at the end of a
4228 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4232 case COFF_SYMBOL_COMMON
:
4233 dst
->symbol
.section
= bfd_com_section_ptr
;
4234 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4237 case COFF_SYMBOL_UNDEFINED
:
4238 dst
->symbol
.section
= bfd_und_section_ptr
;
4239 dst
->symbol
.value
= 0;
4242 case COFF_SYMBOL_PE_SECTION
:
4243 dst
->symbol
.flags
|= BSF_EXPORT
| BSF_SECTION_SYM
;
4244 dst
->symbol
.value
= 0;
4247 case COFF_SYMBOL_LOCAL
:
4248 dst
->symbol
.flags
= BSF_LOCAL
;
4249 #if defined COFF_WITH_PE
4250 /* PE sets the symbol to a value relative to the
4251 start of the section. */
4252 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4254 dst
->symbol
.value
= (src
->u
.syment
.n_value
4255 - dst
->symbol
.section
->vma
);
4257 if (ISFCN ((src
->u
.syment
.n_type
)))
4258 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4263 /* A symbol with a csect entry should not go at the end. */
4264 if (src
->u
.syment
.n_numaux
> 0)
4265 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
4269 if (src
->u
.syment
.n_sclass
== C_NT_WEAK
)
4270 dst
->symbol
.flags
= BSF_WEAK
;
4271 if (src
->u
.syment
.n_sclass
== C_SECTION
4272 && src
->u
.syment
.n_scnum
> 0)
4274 dst
->symbol
.flags
= BSF_LOCAL
;
4278 if (src
->u
.syment
.n_sclass
== C_WEAKEXT
)
4279 dst
->symbol
.flags
= BSF_WEAK
;
4283 case C_STAT
: /* static */
4285 case C_LEAFSTAT
: /* static leaf procedure */
4288 case C_THUMBSTAT
: /* Thumb static */
4289 case C_THUMBLABEL
: /* Thumb label */
4290 case C_THUMBSTATFUNC
:/* Thumb static function */
4292 case C_LABEL
: /* label */
4293 if (src
->u
.syment
.n_scnum
== N_DEBUG
)
4294 dst
->symbol
.flags
= BSF_DEBUGGING
;
4296 dst
->symbol
.flags
= BSF_LOCAL
;
4298 /* Base the value as an index from the base of the
4299 section, if there is one. */
4300 if (dst
->symbol
.section
)
4302 #if defined COFF_WITH_PE
4303 /* PE sets the symbol to a value relative to the
4304 start of the section. */
4305 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4307 dst
->symbol
.value
= (src
->u
.syment
.n_value
4308 - dst
->symbol
.section
->vma
);
4312 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4315 case C_MOS
: /* member of structure */
4316 case C_EOS
: /* end of structure */
4317 #ifdef NOTDEF /* C_AUTOARG has the same value */
4319 case C_GLBLREG
: /* A29k-specific storage class */
4322 case C_REGPARM
: /* register parameter */
4323 case C_REG
: /* register variable */
4324 /* C_AUTOARG conflictes with TI COFF C_UEXT */
4325 #if !defined (TIC80COFF) && !defined (TICOFF)
4327 case C_AUTOARG
: /* 960-specific storage class */
4330 case C_TPDEF
: /* type definition */
4332 case C_AUTO
: /* automatic variable */
4333 case C_FIELD
: /* bit field */
4334 case C_ENTAG
: /* enumeration tag */
4335 case C_MOE
: /* member of enumeration */
4336 case C_MOU
: /* member of union */
4337 case C_UNTAG
: /* union tag */
4338 dst
->symbol
.flags
= BSF_DEBUGGING
;
4339 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4342 case C_FILE
: /* file name */
4343 case C_STRTAG
: /* structure tag */
4358 dst
->symbol
.flags
= BSF_DEBUGGING
;
4359 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4363 case C_BINCL
: /* beginning of include file */
4364 case C_EINCL
: /* ending of include file */
4365 /* The value is actually a pointer into the line numbers
4366 of the file. We locate the line number entry, and
4367 set the section to the section which contains it, and
4368 the value to the index in that section. */
4372 dst
->symbol
.flags
= BSF_DEBUGGING
;
4373 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4374 if (sec
->line_filepos
<= (file_ptr
) src
->u
.syment
.n_value
4375 && ((file_ptr
) (sec
->line_filepos
4376 + sec
->lineno_count
* bfd_coff_linesz (abfd
))
4377 > (file_ptr
) src
->u
.syment
.n_value
))
4380 dst
->symbol
.value
= 0;
4383 dst
->symbol
.section
= sec
;
4384 dst
->symbol
.value
= ((src
->u
.syment
.n_value
4385 - sec
->line_filepos
)
4386 / bfd_coff_linesz (abfd
));
4393 dst
->symbol
.flags
= BSF_DEBUGGING
;
4395 /* The value is actually a symbol index. Save a pointer
4396 to the symbol instead of the index. FIXME: This
4397 should use a union. */
4398 src
->u
.syment
.n_value
=
4399 (long) (native_symbols
+ src
->u
.syment
.n_value
);
4400 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4405 case C_BLOCK
: /* ".bb" or ".eb" */
4406 case C_FCN
: /* ".bf" or ".ef" (or PE ".lf") */
4407 case C_EFCN
: /* physical end of function */
4408 #if defined COFF_WITH_PE
4409 /* PE sets the symbol to a value relative to the start
4411 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4412 if (strcmp (dst
->symbol
.name
, ".bf") != 0)
4414 /* PE uses funny values for .ef and .lf; don't
4416 dst
->symbol
.flags
= BSF_DEBUGGING
;
4419 dst
->symbol
.flags
= BSF_DEBUGGING
| BSF_DEBUGGING_RELOC
;
4421 /* Base the value as an index from the base of the
4423 dst
->symbol
.flags
= BSF_LOCAL
;
4424 dst
->symbol
.value
= (src
->u
.syment
.n_value
4425 - dst
->symbol
.section
->vma
);
4429 case C_STATLAB
: /* Static load time label */
4430 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4431 dst
->symbol
.flags
= BSF_GLOBAL
;
4435 /* PE DLLs sometimes have zeroed out symbols for some
4436 reason. Just ignore them without a warning. */
4437 if (src
->u
.syment
.n_type
== 0
4438 && src
->u
.syment
.n_value
== 0
4439 && src
->u
.syment
.n_scnum
== 0)
4442 case C_EXTDEF
: /* external definition */
4443 case C_ULABEL
: /* undefined label */
4444 case C_USTATIC
: /* undefined static */
4445 #ifndef COFF_WITH_PE
4446 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4447 class to represent a section symbol */
4448 case C_LINE
: /* line # reformatted as symbol table entry */
4449 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4450 case C_ALIAS
: /* duplicate tag */
4452 /* New storage classes for TI COFF */
4453 #if defined(TIC80COFF) || defined(TICOFF)
4454 case C_UEXT
: /* Tentative external definition */
4456 case C_EXTLAB
: /* External load time label */
4457 case C_HIDDEN
: /* ext symbol in dmert public lib */
4459 (*_bfd_error_handler
)
4460 (_("%s: Unrecognized storage class %d for %s symbol `%s'"),
4461 bfd_get_filename (abfd
), src
->u
.syment
.n_sclass
,
4462 dst
->symbol
.section
->name
, dst
->symbol
.name
);
4463 dst
->symbol
.flags
= BSF_DEBUGGING
;
4464 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4468 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4472 dst
->symbol
.udata
.i
= 0;
4473 dst
->lineno
= (alent
*) NULL
;
4474 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
4476 number_of_symbols
++;
4477 } /* walk the native symtab */
4478 } /* bfdize the native symtab */
4480 obj_symbols (abfd
) = cached_area
;
4481 obj_raw_syments (abfd
) = native_symbols
;
4483 bfd_get_symcount (abfd
) = number_of_symbols
;
4484 obj_convert (abfd
) = table_ptr
;
4485 /* Slurp the line tables for each section too */
4491 coff_slurp_line_table (abfd
, p
);
4496 } /* coff_slurp_symbol_table() */
4498 /* Classify a COFF symbol. A couple of targets have globally visible
4499 symbols which are not class C_EXT, and this handles those. It also
4500 recognizes some special PE cases. */
4502 static enum coff_symbol_classification
4503 coff_classify_symbol (abfd
, syment
)
4505 struct internal_syment
*syment
;
4507 /* FIXME: This partially duplicates the switch in
4508 coff_slurp_symbol_table. */
4509 switch (syment
->n_sclass
)
4518 case C_THUMBEXTFUNC
:
4526 if (syment
->n_scnum
== 0)
4528 if (syment
->n_value
== 0)
4529 return COFF_SYMBOL_UNDEFINED
;
4531 return COFF_SYMBOL_COMMON
;
4533 return COFF_SYMBOL_GLOBAL
;
4540 if (syment
->n_sclass
== C_STAT
)
4542 if (syment
->n_scnum
== 0)
4544 /* The Microsoft compiler sometimes generates these if a
4545 small static function is inlined every time it is used.
4546 The function is discarded, but the symbol table entry
4548 return COFF_SYMBOL_LOCAL
;
4551 #ifdef STRICT_PE_FORMAT
4552 /* This is correct for Microsoft generated objects, but it
4553 breaks gas generated objects. */
4555 if (syment
->n_value
== 0)
4558 char buf
[SYMNMLEN
+ 1];
4560 sec
= coff_section_from_bfd_index (abfd
, syment
->n_scnum
);
4562 && (strcmp (bfd_get_section_name (abfd
, sec
),
4563 _bfd_coff_internal_syment_name (abfd
, syment
, buf
))
4565 return COFF_SYMBOL_PE_SECTION
;
4569 return COFF_SYMBOL_LOCAL
;
4572 if (syment
->n_sclass
== C_SECTION
)
4574 /* In some cases in a DLL generated by the Microsoft linker, the
4575 n_value field will contain garbage. FIXME: This should
4576 probably be handled by the swapping function instead. */
4577 syment
->n_value
= 0;
4578 if (syment
->n_scnum
== 0)
4579 return COFF_SYMBOL_UNDEFINED
;
4580 return COFF_SYMBOL_PE_SECTION
;
4582 #endif /* COFF_WITH_PE */
4584 /* If it is not a global symbol, we presume it is a local symbol. */
4586 if (syment
->n_scnum
== 0)
4588 char buf
[SYMNMLEN
+ 1];
4590 (*_bfd_error_handler
)
4591 (_("warning: %s: local symbol `%s' has no section"),
4592 bfd_get_filename (abfd
),
4593 _bfd_coff_internal_syment_name (abfd
, syment
, buf
));
4596 return COFF_SYMBOL_LOCAL
;
4603 Coff relocations are easily transformed into the internal BFD form
4606 Reading a coff relocation table is done in the following stages:
4608 o Read the entire coff relocation table into memory.
4610 o Process each relocation in turn; first swap it from the
4611 external to the internal form.
4613 o Turn the symbol referenced in the relocation's symbol index
4614 into a pointer into the canonical symbol table.
4615 This table is the same as the one returned by a call to
4616 @code{bfd_canonicalize_symtab}. The back end will call that
4617 routine and save the result if a canonicalization hasn't been done.
4619 o The reloc index is turned into a pointer to a howto
4620 structure, in a back end specific way. For instance, the 386
4621 and 960 use the @code{r_type} to directly produce an index
4622 into a howto table vector; the 88k subtracts a number from the
4623 @code{r_type} field and creates an addend field.
4629 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
4631 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
4632 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
4633 coffsym = (obj_symbols (abfd) \
4634 + (cache_ptr->sym_ptr_ptr - symbols)); \
4636 coffsym = coff_symbol_from (abfd, ptr); \
4637 if (coffsym != (coff_symbol_type *) NULL \
4638 && coffsym->native->u.syment.n_scnum == 0) \
4639 cache_ptr->addend = 0; \
4640 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
4641 && ptr->section != (asection *) NULL) \
4642 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
4644 cache_ptr->addend = 0; \
4649 coff_slurp_reloc_table (abfd
, asect
, symbols
)
4654 RELOC
*native_relocs
;
4655 arelent
*reloc_cache
;
4660 if (asect
->relocation
)
4662 if (asect
->reloc_count
== 0)
4664 if (asect
->flags
& SEC_CONSTRUCTOR
)
4666 if (!coff_slurp_symbol_table (abfd
))
4669 (RELOC
*) buy_and_read (abfd
,
4672 (size_t) (bfd_coff_relsz (abfd
) *
4673 asect
->reloc_count
));
4674 reloc_cache
= (arelent
*)
4675 bfd_alloc (abfd
, (size_t) (asect
->reloc_count
* sizeof (arelent
)));
4677 if (reloc_cache
== NULL
)
4681 for (idx
= 0; idx
< asect
->reloc_count
; idx
++)
4683 struct internal_reloc dst
;
4684 struct external_reloc
*src
;
4685 #ifndef RELOC_PROCESSING
4689 cache_ptr
= reloc_cache
+ idx
;
4690 src
= native_relocs
+ idx
;
4692 coff_swap_reloc_in (abfd
, src
, &dst
);
4694 #ifdef RELOC_PROCESSING
4695 RELOC_PROCESSING (cache_ptr
, &dst
, symbols
, abfd
, asect
);
4697 cache_ptr
->address
= dst
.r_vaddr
;
4699 if (dst
.r_symndx
!= -1)
4701 if (dst
.r_symndx
< 0 || dst
.r_symndx
>= obj_conv_table_size (abfd
))
4703 (*_bfd_error_handler
)
4704 (_("%s: warning: illegal symbol index %ld in relocs"),
4705 bfd_get_filename (abfd
), dst
.r_symndx
);
4706 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
4711 cache_ptr
->sym_ptr_ptr
= (symbols
4712 + obj_convert (abfd
)[dst
.r_symndx
]);
4713 ptr
= *(cache_ptr
->sym_ptr_ptr
);
4718 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
4722 /* The symbols definitions that we have read in have been
4723 relocated as if their sections started at 0. But the offsets
4724 refering to the symbols in the raw data have not been
4725 modified, so we have to have a negative addend to compensate.
4727 Note that symbols which used to be common must be left alone */
4729 /* Calculate any reloc addend by looking at the symbol */
4730 CALC_ADDEND (abfd
, ptr
, dst
, cache_ptr
);
4732 cache_ptr
->address
-= asect
->vma
;
4733 /* !! cache_ptr->section = (asection *) NULL;*/
4735 /* Fill in the cache_ptr->howto field from dst.r_type */
4736 RTYPE2HOWTO (cache_ptr
, &dst
);
4737 #endif /* RELOC_PROCESSING */
4739 if (cache_ptr
->howto
== NULL
)
4741 (*_bfd_error_handler
)
4742 (_("%s: illegal relocation type %d at address 0x%lx"),
4743 bfd_get_filename (abfd
), dst
.r_type
, (long) dst
.r_vaddr
);
4744 bfd_set_error (bfd_error_bad_value
);
4749 asect
->relocation
= reloc_cache
;
4753 #ifndef coff_rtype_to_howto
4756 /* Get the howto structure for a reloc. This is only used if the file
4757 including this one defines coff_relocate_section to be
4758 _bfd_coff_generic_relocate_section, so it is OK if it does not
4759 always work. It is the responsibility of the including file to
4760 make sure it is reasonable if it is needed. */
4762 static reloc_howto_type
*coff_rtype_to_howto
4763 PARAMS ((bfd
*, asection
*, struct internal_reloc
*,
4764 struct coff_link_hash_entry
*, struct internal_syment
*,
4768 static reloc_howto_type
*
4769 coff_rtype_to_howto (abfd
, sec
, rel
, h
, sym
, addendp
)
4770 bfd
*abfd ATTRIBUTE_UNUSED
;
4771 asection
*sec ATTRIBUTE_UNUSED
;
4772 struct internal_reloc
*rel
;
4773 struct coff_link_hash_entry
*h ATTRIBUTE_UNUSED
;
4774 struct internal_syment
*sym ATTRIBUTE_UNUSED
;
4775 bfd_vma
*addendp ATTRIBUTE_UNUSED
;
4779 RTYPE2HOWTO (&genrel
, rel
);
4780 return genrel
.howto
;
4783 #else /* ! defined (RTYPE2HOWTO) */
4785 #define coff_rtype_to_howto NULL
4787 #endif /* ! defined (RTYPE2HOWTO) */
4788 #endif /* ! defined (coff_rtype_to_howto) */
4790 /* This is stupid. This function should be a boolean predicate. */
4792 coff_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
4798 arelent
*tblptr
= section
->relocation
;
4799 unsigned int count
= 0;
4802 if (section
->flags
& SEC_CONSTRUCTOR
)
4804 /* this section has relocs made up by us, they are not in the
4805 file, so take them out of their chain and place them into
4806 the data area provided */
4807 arelent_chain
*chain
= section
->constructor_chain
;
4808 for (count
= 0; count
< section
->reloc_count
; count
++)
4810 *relptr
++ = &chain
->relent
;
4811 chain
= chain
->next
;
4817 if (! coff_slurp_reloc_table (abfd
, section
, symbols
))
4820 tblptr
= section
->relocation
;
4822 for (; count
++ < section
->reloc_count
;)
4823 *relptr
++ = tblptr
++;
4828 return section
->reloc_count
;
4833 coff_sym_filepos (abfd
)
4836 return obj_sym_filepos (abfd
);
4840 #ifndef coff_reloc16_estimate
4841 #define coff_reloc16_estimate dummy_reloc16_estimate
4843 static int dummy_reloc16_estimate
4844 PARAMS ((bfd
*, asection
*, arelent
*, unsigned int,
4845 struct bfd_link_info
*));
4848 dummy_reloc16_estimate (abfd
, input_section
, reloc
, shrink
, link_info
)
4849 bfd
*abfd ATTRIBUTE_UNUSED
;
4850 asection
*input_section ATTRIBUTE_UNUSED
;
4851 arelent
*reloc ATTRIBUTE_UNUSED
;
4852 unsigned int shrink ATTRIBUTE_UNUSED
;
4853 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
4861 #ifndef coff_reloc16_extra_cases
4863 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
4865 /* This works even if abort is not declared in any header file. */
4867 static void dummy_reloc16_extra_cases
4868 PARAMS ((bfd
*, struct bfd_link_info
*, struct bfd_link_order
*, arelent
*,
4869 bfd_byte
*, unsigned int *, unsigned int *));
4872 dummy_reloc16_extra_cases (abfd
, link_info
, link_order
, reloc
, data
, src_ptr
,
4874 bfd
*abfd ATTRIBUTE_UNUSED
;
4875 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
4876 struct bfd_link_order
*link_order ATTRIBUTE_UNUSED
;
4877 arelent
*reloc ATTRIBUTE_UNUSED
;
4878 bfd_byte
*data ATTRIBUTE_UNUSED
;
4879 unsigned int *src_ptr ATTRIBUTE_UNUSED
;
4880 unsigned int *dst_ptr ATTRIBUTE_UNUSED
;
4886 /* If coff_relocate_section is defined, we can use the optimized COFF
4887 backend linker. Otherwise we must continue to use the old linker. */
4888 #ifdef coff_relocate_section
4889 #ifndef coff_bfd_link_hash_table_create
4890 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
4892 #ifndef coff_bfd_link_add_symbols
4893 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
4895 #ifndef coff_bfd_final_link
4896 #define coff_bfd_final_link _bfd_coff_final_link
4898 #else /* ! defined (coff_relocate_section) */
4899 #define coff_relocate_section NULL
4900 #ifndef coff_bfd_link_hash_table_create
4901 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
4903 #ifndef coff_bfd_link_add_symbols
4904 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
4906 #define coff_bfd_final_link _bfd_generic_final_link
4907 #endif /* ! defined (coff_relocate_section) */
4909 #define coff_bfd_link_split_section _bfd_generic_link_split_section
4911 #ifndef coff_start_final_link
4912 #define coff_start_final_link NULL
4915 #ifndef coff_adjust_symndx
4916 #define coff_adjust_symndx NULL
4919 #ifndef coff_link_add_one_symbol
4920 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
4923 #ifndef coff_link_output_has_begun
4925 static boolean coff_link_output_has_begun
4926 PARAMS ((bfd
*, struct coff_final_link_info
*));
4929 coff_link_output_has_begun (abfd
, info
)
4931 struct coff_final_link_info
* info ATTRIBUTE_UNUSED
;
4933 return abfd
->output_has_begun
;
4937 #ifndef coff_final_link_postscript
4939 static boolean coff_final_link_postscript
4940 PARAMS ((bfd
*, struct coff_final_link_info
*));
4943 coff_final_link_postscript (abfd
, pfinfo
)
4944 bfd
* abfd ATTRIBUTE_UNUSED
;
4945 struct coff_final_link_info
* pfinfo ATTRIBUTE_UNUSED
;
4951 #ifndef coff_SWAP_aux_in
4952 #define coff_SWAP_aux_in coff_swap_aux_in
4954 #ifndef coff_SWAP_sym_in
4955 #define coff_SWAP_sym_in coff_swap_sym_in
4957 #ifndef coff_SWAP_lineno_in
4958 #define coff_SWAP_lineno_in coff_swap_lineno_in
4960 #ifndef coff_SWAP_aux_out
4961 #define coff_SWAP_aux_out coff_swap_aux_out
4963 #ifndef coff_SWAP_sym_out
4964 #define coff_SWAP_sym_out coff_swap_sym_out
4966 #ifndef coff_SWAP_lineno_out
4967 #define coff_SWAP_lineno_out coff_swap_lineno_out
4969 #ifndef coff_SWAP_reloc_out
4970 #define coff_SWAP_reloc_out coff_swap_reloc_out
4972 #ifndef coff_SWAP_filehdr_out
4973 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
4975 #ifndef coff_SWAP_aouthdr_out
4976 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
4978 #ifndef coff_SWAP_scnhdr_out
4979 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
4981 #ifndef coff_SWAP_reloc_in
4982 #define coff_SWAP_reloc_in coff_swap_reloc_in
4984 #ifndef coff_SWAP_filehdr_in
4985 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
4987 #ifndef coff_SWAP_aouthdr_in
4988 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
4990 #ifndef coff_SWAP_scnhdr_in
4991 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
4994 static const bfd_coff_backend_data bfd_coff_std_swap_table
=
4996 coff_SWAP_aux_in
, coff_SWAP_sym_in
, coff_SWAP_lineno_in
,
4997 coff_SWAP_aux_out
, coff_SWAP_sym_out
,
4998 coff_SWAP_lineno_out
, coff_SWAP_reloc_out
,
4999 coff_SWAP_filehdr_out
, coff_SWAP_aouthdr_out
,
5000 coff_SWAP_scnhdr_out
,
5001 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
, FILNMLEN
,
5002 #ifdef COFF_LONG_FILENAMES
5007 #ifdef COFF_LONG_SECTION_NAMES
5012 COFF_DEFAULT_SECTION_ALIGNMENT_POWER
,
5013 coff_SWAP_filehdr_in
, coff_SWAP_aouthdr_in
, coff_SWAP_scnhdr_in
,
5014 coff_SWAP_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
5015 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
5016 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
5017 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
5018 coff_classify_symbol
, coff_compute_section_file_positions
,
5019 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
5020 coff_adjust_symndx
, coff_link_add_one_symbol
,
5021 coff_link_output_has_begun
, coff_final_link_postscript
5024 #ifndef coff_close_and_cleanup
5025 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5028 #ifndef coff_bfd_free_cached_info
5029 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5032 #ifndef coff_get_section_contents
5033 #define coff_get_section_contents _bfd_generic_get_section_contents
5036 #ifndef coff_bfd_copy_private_symbol_data
5037 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5040 #ifndef coff_bfd_copy_private_section_data
5041 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5044 #ifndef coff_bfd_copy_private_bfd_data
5045 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5048 #ifndef coff_bfd_merge_private_bfd_data
5049 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5052 #ifndef coff_bfd_set_private_flags
5053 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5056 #ifndef coff_bfd_print_private_bfd_data
5057 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5060 #ifndef coff_bfd_is_local_label_name
5061 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5064 #ifndef coff_read_minisymbols
5065 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5068 #ifndef coff_minisymbol_to_symbol
5069 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5072 /* The reloc lookup routine must be supplied by each individual COFF
5074 #ifndef coff_bfd_reloc_type_lookup
5075 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5078 #ifndef coff_bfd_get_relocated_section_contents
5079 #define coff_bfd_get_relocated_section_contents \
5080 bfd_generic_get_relocated_section_contents
5083 #ifndef coff_bfd_relax_section
5084 #define coff_bfd_relax_section bfd_generic_relax_section
5087 #ifndef coff_bfd_gc_sections
5088 #define coff_bfd_gc_sections bfd_generic_gc_sections
5091 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5092 const bfd_target VAR = \
5095 bfd_target_coff_flavour, \
5096 BFD_ENDIAN_BIG, /* data byte order is big */ \
5097 BFD_ENDIAN_BIG, /* header byte order is big */ \
5098 /* object flags */ \
5099 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5100 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5101 /* section flags */ \
5102 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5103 UNDER, /* leading symbol underscore */ \
5104 '/', /* ar_pad_char */ \
5105 15, /* ar_max_namelen */ \
5107 /* Data conversion functions. */ \
5108 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5109 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5110 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5112 /* Header conversion functions. */ \
5113 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5114 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5115 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5117 /* bfd_check_format */ \
5118 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5119 _bfd_dummy_target }, \
5120 /* bfd_set_format */ \
5121 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5122 /* bfd_write_contents */ \
5123 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5126 BFD_JUMP_TABLE_GENERIC (coff), \
5127 BFD_JUMP_TABLE_COPY (coff), \
5128 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5129 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5130 BFD_JUMP_TABLE_SYMBOLS (coff), \
5131 BFD_JUMP_TABLE_RELOCS (coff), \
5132 BFD_JUMP_TABLE_WRITE (coff), \
5133 BFD_JUMP_TABLE_LINK (coff), \
5134 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5141 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5142 const bfd_target VAR = \
5145 bfd_target_coff_flavour, \
5146 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5147 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5148 /* object flags */ \
5149 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5150 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5151 /* section flags */ \
5152 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5153 UNDER, /* leading symbol underscore */ \
5154 '/', /* ar_pad_char */ \
5155 15, /* ar_max_namelen */ \
5157 /* Data conversion functions. */ \
5158 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5159 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5160 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5161 /* Header conversion functions. */ \
5162 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5163 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5164 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5165 /* bfd_check_format */ \
5166 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5167 _bfd_dummy_target }, \
5168 /* bfd_set_format */ \
5169 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5170 /* bfd_write_contents */ \
5171 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5174 BFD_JUMP_TABLE_GENERIC (coff), \
5175 BFD_JUMP_TABLE_COPY (coff), \
5176 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5177 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5178 BFD_JUMP_TABLE_SYMBOLS (coff), \
5179 BFD_JUMP_TABLE_RELOCS (coff), \
5180 BFD_JUMP_TABLE_WRITE (coff), \
5181 BFD_JUMP_TABLE_LINK (coff), \
5182 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \