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 . boolean _bfd_coff_force_symnames_in_strings;
1128 . unsigned int _bfd_coff_debug_string_prefix_length;
1129 . void (*_bfd_coff_swap_filehdr_in) PARAMS ((
1133 . void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
1137 . void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
1141 . void (*_bfd_coff_swap_reloc_in) PARAMS ((
1145 . boolean (*_bfd_coff_bad_format_hook) PARAMS ((
1147 . PTR internal_filehdr));
1148 . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
1150 . PTR internal_filehdr));
1151 . PTR (*_bfd_coff_mkobject_hook) PARAMS ((
1153 . PTR internal_filehdr,
1154 . PTR internal_aouthdr));
1155 . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
1157 . PTR internal_scnhdr,
1159 . asection *section));
1160 . void (*_bfd_set_alignment_hook) PARAMS ((
1163 . PTR internal_scnhdr));
1164 . boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
1166 . boolean (*_bfd_coff_symname_in_debug) PARAMS ((
1168 . struct internal_syment *sym));
1169 . boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
1171 . combined_entry_type *table_base,
1172 . combined_entry_type *symbol,
1173 . unsigned int indaux,
1174 . combined_entry_type *aux));
1175 . boolean (*_bfd_coff_print_aux) PARAMS ((
1178 . combined_entry_type *table_base,
1179 . combined_entry_type *symbol,
1180 . combined_entry_type *aux,
1181 . unsigned int indaux));
1182 . void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
1184 . struct bfd_link_info *link_info,
1185 . struct bfd_link_order *link_order,
1188 . unsigned int *src_ptr,
1189 . unsigned int *dst_ptr));
1190 . int (*_bfd_coff_reloc16_estimate) PARAMS ((
1192 . asection *input_section,
1194 . unsigned int shrink,
1195 . struct bfd_link_info *link_info));
1196 . enum coff_symbol_classification (*_bfd_coff_classify_symbol) PARAMS ((
1198 . struct internal_syment *));
1199 . boolean (*_bfd_coff_compute_section_file_positions) PARAMS ((
1201 . boolean (*_bfd_coff_start_final_link) PARAMS ((
1203 . struct bfd_link_info *info));
1204 . boolean (*_bfd_coff_relocate_section) PARAMS ((
1206 . struct bfd_link_info *info,
1208 . asection *input_section,
1209 . bfd_byte *contents,
1210 . struct internal_reloc *relocs,
1211 . struct internal_syment *syms,
1212 . asection **sections));
1213 . reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
1216 . struct internal_reloc *rel,
1217 . struct coff_link_hash_entry *h,
1218 . struct internal_syment *sym,
1219 . bfd_vma *addendp));
1220 . boolean (*_bfd_coff_adjust_symndx) PARAMS ((
1222 . struct bfd_link_info *info,
1225 . struct internal_reloc *reloc,
1226 . boolean *adjustedp));
1227 . boolean (*_bfd_coff_link_add_one_symbol) PARAMS ((
1228 . struct bfd_link_info *info,
1232 . asection *section,
1234 . const char *string,
1237 . struct bfd_link_hash_entry **hashp));
1239 . boolean (*_bfd_coff_link_output_has_begun) PARAMS ((
1241 . struct coff_final_link_info * pfinfo));
1242 . boolean (*_bfd_coff_final_link_postscript) PARAMS ((
1244 . struct coff_final_link_info * pfinfo));
1246 .} bfd_coff_backend_data;
1248 .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1250 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1251 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1253 .#define bfd_coff_swap_sym_in(a,e,i) \
1254 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1256 .#define bfd_coff_swap_lineno_in(a,e,i) \
1257 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1259 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1260 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1262 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1263 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1265 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1266 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1268 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1269 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1271 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1272 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1274 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1275 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1277 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1278 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1280 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1281 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1282 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1283 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1284 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1285 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
1286 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1287 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1288 .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1289 .#define bfd_coff_long_section_names(abfd) \
1290 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1291 .#define bfd_coff_default_section_alignment_power(abfd) \
1292 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1293 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1294 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1296 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1297 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1299 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1300 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1302 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1303 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1305 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1306 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1308 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1309 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1310 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1311 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
1313 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section)\
1314 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1315 . (abfd, scnhdr, name, section))
1317 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1318 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1320 .#define bfd_coff_slurp_symbol_table(abfd)\
1321 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1323 .#define bfd_coff_symname_in_debug(abfd, sym)\
1324 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1326 .#define bfd_coff_force_symnames_in_strings(abfd)\
1327 . (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
1329 .#define bfd_coff_debug_string_prefix_length(abfd)\
1330 . (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
1332 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1333 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1334 . (abfd, file, base, symbol, aux, indaux))
1336 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
1337 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1338 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1340 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1341 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1342 . (abfd, section, reloc, shrink, link_info))
1344 .#define bfd_coff_classify_symbol(abfd, sym)\
1345 . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1348 .#define bfd_coff_compute_section_file_positions(abfd)\
1349 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1352 .#define bfd_coff_start_final_link(obfd, info)\
1353 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1355 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1356 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1357 . (obfd, info, ibfd, o, con, rel, isyms, secs))
1358 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1359 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1360 . (abfd, sec, rel, h, sym, addendp))
1361 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1362 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1363 . (obfd, info, ibfd, sec, rel, adjustedp))
1364 .#define bfd_coff_link_add_one_symbol(info,abfd,name,flags,section,value,string,cp,coll,hashp)\
1365 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1366 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1368 .#define bfd_coff_link_output_has_begun(a,p) \
1369 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
1370 .#define bfd_coff_final_link_postscript(a,p) \
1371 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
1375 /* See whether the magic number matches. */
1378 coff_bad_format_hook (abfd
, filehdr
)
1379 bfd
* abfd ATTRIBUTE_UNUSED
;
1382 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1384 if (BADMAG (*internal_f
))
1387 /* if the optional header is NULL or not the correct size then
1388 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1389 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1390 optional header is of a different size.
1392 But the mips keeps extra stuff in it's opthdr, so dont check
1396 #if defined(M88) || defined(I960)
1397 if (internal_f
->f_opthdr
!= 0 && bfd_coff_aoutsz (abfd
) != internal_f
->f_opthdr
)
1404 /* Check whether this section uses an alignment other than the
1408 coff_set_custom_section_alignment (abfd
, section
, alignment_table
, table_size
)
1409 bfd
*abfd ATTRIBUTE_UNUSED
;
1411 const struct coff_section_alignment_entry
*alignment_table
;
1412 const unsigned int table_size
;
1414 const unsigned int default_alignment
= COFF_DEFAULT_SECTION_ALIGNMENT_POWER
;
1417 for (i
= 0; i
< table_size
; ++i
)
1419 const char *secname
= bfd_get_section_name (abfd
, section
);
1420 if (alignment_table
[i
].comparison_length
== (unsigned int) -1
1421 ? strcmp (alignment_table
[i
].name
, secname
) == 0
1422 : strncmp (alignment_table
[i
].name
, secname
,
1423 alignment_table
[i
].comparison_length
) == 0)
1426 if (i
>= table_size
)
1429 if (alignment_table
[i
].default_alignment_min
!= COFF_ALIGNMENT_FIELD_EMPTY
1430 && default_alignment
< alignment_table
[i
].default_alignment_min
)
1433 if (alignment_table
[i
].default_alignment_max
!= COFF_ALIGNMENT_FIELD_EMPTY
1434 && default_alignment
> alignment_table
[i
].default_alignment_max
)
1437 section
->alignment_power
= alignment_table
[i
].alignment_power
;
1440 /* Custom section alignment records. */
1442 static const struct coff_section_alignment_entry
1443 coff_section_alignment_table
[] =
1445 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1446 COFF_SECTION_ALIGNMENT_ENTRIES
,
1448 /* There must not be any gaps between .stabstr sections. */
1449 { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1450 1, COFF_ALIGNMENT_FIELD_EMPTY
, 0 },
1451 /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */
1452 { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1453 3, COFF_ALIGNMENT_FIELD_EMPTY
, 2 },
1454 /* Similarly for the .ctors and .dtors sections. */
1455 { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1456 3, COFF_ALIGNMENT_FIELD_EMPTY
, 2 },
1457 { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1458 3, COFF_ALIGNMENT_FIELD_EMPTY
, 2 }
1461 static const unsigned int coff_section_alignment_table_size
=
1462 sizeof coff_section_alignment_table
/ sizeof coff_section_alignment_table
[0];
1464 /* Initialize a section structure with information peculiar to this
1465 particular implementation of COFF. */
1468 coff_new_section_hook (abfd
, section
)
1472 combined_entry_type
*native
;
1474 section
->alignment_power
= COFF_DEFAULT_SECTION_ALIGNMENT_POWER
;
1477 if (xcoff_data (abfd
)->text_align_power
!= 0
1478 && strcmp (bfd_get_section_name (abfd
, section
), ".text") == 0)
1479 section
->alignment_power
= xcoff_data (abfd
)->text_align_power
;
1480 if (xcoff_data (abfd
)->data_align_power
!= 0
1481 && strcmp (bfd_get_section_name (abfd
, section
), ".data") == 0)
1482 section
->alignment_power
= xcoff_data (abfd
)->data_align_power
;
1485 /* Allocate aux records for section symbols, to store size and
1488 @@ The 10 is a guess at a plausible maximum number of aux entries
1489 (but shouldn't be a constant). */
1490 native
= ((combined_entry_type
*)
1491 bfd_zalloc (abfd
, sizeof (combined_entry_type
) * 10));
1495 /* We don't need to set up n_name, n_value, or n_scnum in the native
1496 symbol information, since they'll be overriden by the BFD symbol
1497 anyhow. However, we do need to set the type and storage class,
1498 in case this symbol winds up getting written out. The value 0
1499 for n_numaux is already correct. */
1501 native
->u
.syment
.n_type
= T_NULL
;
1502 native
->u
.syment
.n_sclass
= C_STAT
;
1504 coffsymbol (section
->symbol
)->native
= native
;
1506 coff_set_custom_section_alignment (abfd
, section
,
1507 coff_section_alignment_table
,
1508 coff_section_alignment_table_size
);
1513 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1515 /* Set the alignment of a BFD section. */
1517 static void coff_set_alignment_hook
PARAMS ((bfd
*, asection
*, PTR
));
1520 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1521 bfd
* abfd ATTRIBUTE_UNUSED
;
1525 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1529 /* Extract ALIGN from 2**ALIGN stored in section header */
1530 for (i
= 0; i
< 32; i
++)
1531 if ((1 << i
) >= hdr
->s_align
)
1535 /* TI tools puts the alignment power in bits 8-11 */
1536 i
= (hdr
->s_flags
>> 8) & 0xF ;
1538 #ifdef COFF_DECODE_ALIGNMENT
1539 i
= COFF_DECODE_ALIGNMENT(hdr
->s_flags
);
1541 section
->alignment_power
= i
;
1543 #ifdef coff_set_section_load_page
1544 coff_set_section_load_page (section
, hdr
->s_page
);
1548 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1551 /* a couple of macros to help setting the alignment power field */
1552 #define ALIGN_SET(field,x,y) \
1553 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
1555 section->alignment_power = y;\
1558 #define ELIFALIGN_SET(field,x,y) \
1559 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
1561 section->alignment_power = y;\
1564 static void coff_set_alignment_hook
PARAMS ((bfd
*, asection
*, PTR
));
1567 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1568 bfd
* abfd ATTRIBUTE_UNUSED
;
1572 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1574 ALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_64BYTES
, 6)
1575 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_32BYTES
, 5)
1576 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_16BYTES
, 4)
1577 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_8BYTES
, 3)
1578 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_4BYTES
, 2)
1579 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_2BYTES
, 1)
1580 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_1BYTES
, 0)
1582 /* In a PE image file, the s_paddr field holds the virtual size of a
1583 section, while the s_size field holds the raw size. We also keep
1584 the original section flag value, since not every bit can be
1585 mapped onto a generic BFD section bit. */
1586 if (coff_section_data (abfd
, section
) == NULL
)
1588 section
->used_by_bfd
=
1589 (PTR
) bfd_zalloc (abfd
, sizeof (struct coff_section_tdata
));
1590 if (section
->used_by_bfd
== NULL
)
1592 /* FIXME: Return error. */
1596 if (pei_section_data (abfd
, section
) == NULL
)
1598 coff_section_data (abfd
, section
)->tdata
=
1599 (PTR
) bfd_zalloc (abfd
, sizeof (struct pei_section_tdata
));
1600 if (coff_section_data (abfd
, section
)->tdata
== NULL
)
1602 /* FIXME: Return error. */
1606 pei_section_data (abfd
, section
)->virt_size
= hdr
->s_paddr
;
1607 pei_section_data (abfd
, section
)->pe_flags
= hdr
->s_flags
;
1609 section
->lma
= hdr
->s_vaddr
;
1612 #undef ELIFALIGN_SET
1614 #else /* ! COFF_WITH_PE */
1617 /* We grossly abuse this function to handle XCOFF overflow headers.
1618 When we see one, we correct the reloc and line number counts in the
1619 real header, and remove the section we just created. */
1621 static void coff_set_alignment_hook
PARAMS ((bfd
*, asection
*, PTR
));
1624 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1629 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1633 if ((hdr
->s_flags
& STYP_OVRFLO
) == 0)
1636 real_sec
= coff_section_from_bfd_index (abfd
, hdr
->s_nreloc
);
1637 if (real_sec
== NULL
)
1640 real_sec
->reloc_count
= hdr
->s_paddr
;
1641 real_sec
->lineno_count
= hdr
->s_vaddr
;
1643 for (ps
= &abfd
->sections
; *ps
!= NULL
; ps
= &(*ps
)->next
)
1648 --abfd
->section_count
;
1654 #else /* ! RS6000COFF_C */
1656 #define coff_set_alignment_hook \
1657 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1659 #endif /* ! RS6000COFF_C */
1660 #endif /* ! COFF_WITH_PE */
1661 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1663 #ifndef coff_mkobject
1665 static boolean coff_mkobject
PARAMS ((bfd
*));
1668 coff_mkobject (abfd
)
1671 coff_data_type
*coff
;
1673 abfd
->tdata
.coff_obj_data
= (struct coff_tdata
*) bfd_zalloc (abfd
, sizeof (coff_data_type
));
1674 if (abfd
->tdata
.coff_obj_data
== 0)
1676 coff
= coff_data (abfd
);
1677 coff
->symbols
= (coff_symbol_type
*) NULL
;
1678 coff
->conversion_table
= (unsigned int *) NULL
;
1679 coff
->raw_syments
= (struct coff_ptr_struct
*) NULL
;
1680 coff
->relocbase
= 0;
1681 coff
->local_toc_sym_map
= 0;
1683 /* make_abs_section(abfd);*/
1689 /* Create the COFF backend specific information. */
1690 #ifndef coff_mkobject_hook
1692 coff_mkobject_hook (abfd
, filehdr
, aouthdr
)
1695 PTR aouthdr ATTRIBUTE_UNUSED
;
1697 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1698 coff_data_type
*coff
;
1700 if (coff_mkobject (abfd
) == false)
1703 coff
= coff_data (abfd
);
1705 coff
->sym_filepos
= internal_f
->f_symptr
;
1707 /* These members communicate important constants about the symbol
1708 table to GDB's symbol-reading code. These `constants'
1709 unfortunately vary among coff implementations... */
1710 coff
->local_n_btmask
= N_BTMASK
;
1711 coff
->local_n_btshft
= N_BTSHFT
;
1712 coff
->local_n_tmask
= N_TMASK
;
1713 coff
->local_n_tshift
= N_TSHIFT
;
1714 coff
->local_symesz
= bfd_coff_symesz (abfd
);
1715 coff
->local_auxesz
= bfd_coff_auxesz (abfd
);
1716 coff
->local_linesz
= bfd_coff_linesz (abfd
);
1718 coff
->timestamp
= internal_f
->f_timdat
;
1720 obj_raw_syment_count (abfd
) =
1721 obj_conv_table_size (abfd
) =
1722 internal_f
->f_nsyms
;
1725 if ((internal_f
->f_flags
& F_SHROBJ
) != 0)
1726 abfd
->flags
|= DYNAMIC
;
1727 if (aouthdr
!= NULL
&& internal_f
->f_opthdr
>= bfd_coff_aoutsz (abfd
))
1729 struct internal_aouthdr
*internal_a
=
1730 (struct internal_aouthdr
*) aouthdr
;
1731 struct xcoff_tdata
*xcoff
;
1733 xcoff
= xcoff_data (abfd
);
1734 # ifdef U803XTOCMAGIC
1735 xcoff
->xcoff64
= internal_f
->f_magic
== U803XTOCMAGIC
;
1739 xcoff
->full_aouthdr
= true;
1740 xcoff
->toc
= internal_a
->o_toc
;
1741 xcoff
->sntoc
= internal_a
->o_sntoc
;
1742 xcoff
->snentry
= internal_a
->o_snentry
;
1743 xcoff
->text_align_power
= internal_a
->o_algntext
;
1744 xcoff
->data_align_power
= internal_a
->o_algndata
;
1745 xcoff
->modtype
= internal_a
->o_modtype
;
1746 xcoff
->cputype
= internal_a
->o_cputype
;
1747 xcoff
->maxdata
= internal_a
->o_maxdata
;
1748 xcoff
->maxstack
= internal_a
->o_maxstack
;
1753 /* Set the flags field from the COFF header read in */
1754 if (! _bfd_coff_arm_set_private_flags (abfd
, internal_f
->f_flags
))
1759 /* FIXME: I'm not sure this is ever executed, since peicode.h
1760 defines coff_mkobject_hook. */
1761 if ((internal_f
->f_flags
& IMAGE_FILE_DEBUG_STRIPPED
) == 0)
1762 abfd
->flags
|= HAS_DEBUG
;
1769 /* Determine the machine architecture and type. FIXME: This is target
1770 dependent because the magic numbers are defined in the target
1771 dependent header files. But there is no particular need for this.
1772 If the magic numbers were moved to a separate file, this function
1773 would be target independent and would also be much more successful
1774 at linking together COFF files for different architectures. */
1777 coff_set_arch_mach_hook (abfd
, filehdr
)
1782 enum bfd_architecture arch
;
1783 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1786 switch (internal_f
->f_magic
)
1790 arch
= bfd_arch_powerpc
;
1791 machine
= 0; /* what does this mean? (krk) */
1797 case I386AIXMAGIC
: /* Danbury PS/2 AIX C Compiler */
1798 case LYNXCOFFMAGIC
: /* shadows the m68k Lynx number below, sigh */
1799 arch
= bfd_arch_i386
;
1805 arch
= bfd_arch_ia64
;
1809 #ifdef A29K_MAGIC_BIG
1810 case A29K_MAGIC_BIG
:
1811 case A29K_MAGIC_LITTLE
:
1812 arch
= bfd_arch_a29k
;
1820 arch
= bfd_arch_arm
;
1821 switch (internal_f
->f_flags
& F_ARM_ARCHITECTURE_MASK
)
1823 case F_ARM_2
: machine
= bfd_mach_arm_2
; break;
1824 case F_ARM_2a
: machine
= bfd_mach_arm_2a
; break;
1825 case F_ARM_3
: machine
= bfd_mach_arm_3
; break;
1827 case F_ARM_3M
: machine
= bfd_mach_arm_3M
; break;
1828 case F_ARM_4
: machine
= bfd_mach_arm_4
; break;
1829 case F_ARM_4T
: machine
= bfd_mach_arm_4T
; break;
1830 case F_ARM_5
: machine
= bfd_mach_arm_5
; break;
1837 #ifdef MC68KBCSMAGIC
1840 #ifdef APOLLOM68KMAGIC
1841 case APOLLOM68KMAGIC
:
1843 #ifdef LYNXCOFFMAGIC
1846 arch
= bfd_arch_m68k
;
1847 machine
= bfd_mach_m68020
;
1854 arch
= bfd_arch_m88k
;
1860 arch
= bfd_arch_z8k
;
1861 switch (internal_f
->f_flags
& F_MACHMASK
)
1864 machine
= bfd_mach_z8001
;
1867 machine
= bfd_mach_z8002
;
1876 arch
= bfd_arch_i860
;
1883 arch
= bfd_arch_i960
;
1884 switch (F_I960TYPE
& internal_f
->f_flags
)
1888 machine
= bfd_mach_i960_core
;
1891 machine
= bfd_mach_i960_kb_sb
;
1894 machine
= bfd_mach_i960_mc
;
1897 machine
= bfd_mach_i960_xa
;
1900 machine
= bfd_mach_i960_ca
;
1903 machine
= bfd_mach_i960_ka_sa
;
1906 machine
= bfd_mach_i960_jx
;
1909 machine
= bfd_mach_i960_hx
;
1927 if (xcoff_data (abfd
)->cputype
!= -1)
1928 cputype
= xcoff_data (abfd
)->cputype
& 0xff;
1931 /* We did not get a value from the a.out header. If the
1932 file has not been stripped, we may be able to get the
1933 architecture information from the first symbol, if it
1934 is a .file symbol. */
1935 if (obj_raw_syment_count (abfd
) == 0)
1940 struct internal_syment sym
;
1942 buf
= (bfd_byte
*) bfd_malloc (bfd_coff_symesz (abfd
));
1943 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1944 || (bfd_read (buf
, 1, bfd_coff_symesz (abfd
), abfd
)
1945 != bfd_coff_symesz (abfd
)))
1950 bfd_coff_swap_sym_in (abfd
, (PTR
) buf
, (PTR
) &sym
);
1951 if (sym
.n_sclass
== C_FILE
)
1952 cputype
= sym
.n_type
& 0xff;
1959 /* FIXME: We don't handle all cases here. */
1965 /* PowerPC Macs use the same magic numbers as RS/6000
1966 (because that's how they were bootstrapped originally),
1967 but they are always PowerPC architecture. */
1968 arch
= bfd_arch_powerpc
;
1969 machine
= bfd_mach_ppc
;
1972 arch
= bfd_arch_powerpc
;
1973 machine
= bfd_mach_ppc_620
;
1975 arch
= bfd_arch_rs6000
;
1976 machine
= bfd_mach_rs6k
;
1978 #endif /* POWERMAC */
1982 arch
= bfd_arch_powerpc
;
1983 machine
= bfd_mach_ppc_601
;
1985 case 2: /* 64 bit PowerPC */
1986 arch
= bfd_arch_powerpc
;
1987 machine
= bfd_mach_ppc_620
;
1990 arch
= bfd_arch_powerpc
;
1991 machine
= bfd_mach_ppc
;
1994 arch
= bfd_arch_rs6000
;
1995 machine
= bfd_mach_rs6k
;
2004 arch
= bfd_arch_we32k
;
2011 arch
= bfd_arch_h8300
;
2012 machine
= bfd_mach_h8300
;
2013 /* !! FIXME this probably isn't the right place for this */
2014 abfd
->flags
|= BFD_IS_RELAXABLE
;
2020 arch
= bfd_arch_h8300
;
2021 machine
= bfd_mach_h8300h
;
2022 /* !! FIXME this probably isn't the right place for this */
2023 abfd
->flags
|= BFD_IS_RELAXABLE
;
2029 arch
= bfd_arch_h8300
;
2030 machine
= bfd_mach_h8300s
;
2031 /* !! FIXME this probably isn't the right place for this */
2032 abfd
->flags
|= BFD_IS_RELAXABLE
;
2036 #ifdef SH_ARCH_MAGIC_BIG
2037 case SH_ARCH_MAGIC_BIG
:
2038 case SH_ARCH_MAGIC_LITTLE
:
2040 case SH_ARCH_MAGIC_WINCE
:
2047 #ifdef MIPS_ARCH_MAGIC_WINCE
2048 case MIPS_ARCH_MAGIC_WINCE
:
2049 arch
= bfd_arch_mips
;
2056 arch
= bfd_arch_h8500
;
2063 #ifdef LYNXCOFFMAGIC
2066 arch
= bfd_arch_sparc
;
2073 arch
= bfd_arch_tic30
;
2078 #ifdef TICOFF_TARGET_ARCH
2079 /* this TI COFF section should be used by all new TI COFF v0 targets */
2081 arch
= TICOFF_TARGET_ARCH
;
2087 /* this TI COFF section should be used by all new TI COFF v1/2 targets */
2088 /* TI COFF1 and COFF2 use the target_id field to specify which arch */
2091 switch (internal_f
->f_target_id
)
2095 arch
= TICOFF_TARGET_ARCH
;
2099 arch
= bfd_arch_obscure
;
2100 (*_bfd_error_handler
)
2101 (_("Unrecognized TI COFF target id '0x%x'"),
2102 internal_f
->f_target_id
);
2108 #ifdef TIC80_ARCH_MAGIC
2109 case TIC80_ARCH_MAGIC
:
2110 arch
= bfd_arch_tic80
;
2116 arch
= bfd_arch_mcore
;
2119 default: /* Unreadable input file type */
2120 arch
= bfd_arch_obscure
;
2124 bfd_default_set_arch_mach (abfd
, arch
, machine
);
2128 #ifdef SYMNAME_IN_DEBUG
2130 static boolean symname_in_debug_hook
2131 PARAMS ((bfd
*, struct internal_syment
*));
2134 symname_in_debug_hook (abfd
, sym
)
2135 bfd
* abfd ATTRIBUTE_UNUSED
;
2136 struct internal_syment
*sym
;
2138 return SYMNAME_IN_DEBUG (sym
) ? true : false;
2143 #define symname_in_debug_hook \
2144 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2151 #define FORCE_SYMNAMES_IN_STRINGS
2154 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2156 static boolean coff_pointerize_aux_hook
2157 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
2158 unsigned int, combined_entry_type
*));
2162 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
2163 bfd
*abfd ATTRIBUTE_UNUSED
;
2164 combined_entry_type
*table_base
;
2165 combined_entry_type
*symbol
;
2166 unsigned int indaux
;
2167 combined_entry_type
*aux
;
2169 int class = symbol
->u
.syment
.n_sclass
;
2171 if ((class == C_EXT
|| class == C_HIDEXT
)
2172 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2174 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) == XTY_LD
)
2176 aux
->u
.auxent
.x_csect
.x_scnlen
.p
=
2177 table_base
+ aux
->u
.auxent
.x_csect
.x_scnlen
.l
;
2178 aux
->fix_scnlen
= 1;
2181 /* Return true to indicate that the caller should not do any
2182 further work on this auxent. */
2186 /* Return false to indicate that this auxent should be handled by
2194 /* We don't want to pointerize bal entries. */
2196 static boolean coff_pointerize_aux_hook
2197 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
2198 unsigned int, combined_entry_type
*));
2202 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
2203 bfd
*abfd ATTRIBUTE_UNUSED
;
2204 combined_entry_type
*table_base ATTRIBUTE_UNUSED
;
2205 combined_entry_type
*symbol
;
2206 unsigned int indaux
;
2207 combined_entry_type
*aux ATTRIBUTE_UNUSED
;
2209 /* Return true if we don't want to pointerize this aux entry, which
2210 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2212 && (symbol
->u
.syment
.n_sclass
== C_LEAFPROC
2213 || symbol
->u
.syment
.n_sclass
== C_LEAFSTAT
2214 || symbol
->u
.syment
.n_sclass
== C_LEAFEXT
));
2219 #define coff_pointerize_aux_hook 0
2222 #endif /* ! RS6000COFF_C */
2224 /* Print an aux entry. This returns true if it has printed it. */
2226 static boolean coff_print_aux
2227 PARAMS ((bfd
*, FILE *, combined_entry_type
*, combined_entry_type
*,
2228 combined_entry_type
*, unsigned int));
2231 coff_print_aux (abfd
, file
, table_base
, symbol
, aux
, indaux
)
2232 bfd
*abfd ATTRIBUTE_UNUSED
;
2233 FILE *file ATTRIBUTE_UNUSED
;
2234 combined_entry_type
*table_base ATTRIBUTE_UNUSED
;
2235 combined_entry_type
*symbol ATTRIBUTE_UNUSED
;
2236 combined_entry_type
*aux ATTRIBUTE_UNUSED
;
2237 unsigned int indaux ATTRIBUTE_UNUSED
;
2240 if ((symbol
->u
.syment
.n_sclass
== C_EXT
2241 || symbol
->u
.syment
.n_sclass
== C_HIDEXT
)
2242 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2244 /* This is a csect entry. */
2245 fprintf (file
, "AUX ");
2246 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) != XTY_LD
)
2248 BFD_ASSERT (! aux
->fix_scnlen
);
2249 fprintf (file
, "val %5ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2253 fprintf (file
, "indx ");
2254 if (! aux
->fix_scnlen
)
2255 fprintf (file
, "%4ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2257 fprintf (file
, "%4ld",
2258 (long) (aux
->u
.auxent
.x_csect
.x_scnlen
.p
- table_base
));
2261 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2262 aux
->u
.auxent
.x_csect
.x_parmhash
,
2263 (unsigned int) aux
->u
.auxent
.x_csect
.x_snhash
,
2264 SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
),
2265 SMTYP_ALIGN (aux
->u
.auxent
.x_csect
.x_smtyp
),
2266 (unsigned int) aux
->u
.auxent
.x_csect
.x_smclas
,
2267 aux
->u
.auxent
.x_csect
.x_stab
,
2268 (unsigned int) aux
->u
.auxent
.x_csect
.x_snstab
);
2273 /* Return false to indicate that no special action was taken. */
2281 To write relocations, the back end steps though the
2282 canonical relocation table and create an
2283 @code{internal_reloc}. The symbol index to use is removed from
2284 the @code{offset} field in the symbol table supplied. The
2285 address comes directly from the sum of the section base
2286 address and the relocation offset; the type is dug directly
2287 from the howto field. Then the @code{internal_reloc} is
2288 swapped into the shape of an @code{external_reloc} and written
2295 static int compare_arelent_ptr
PARAMS ((const PTR
, const PTR
));
2297 /* AUX's ld wants relocations to be sorted */
2299 compare_arelent_ptr (x
, y
)
2303 const arelent
**a
= (const arelent
**) x
;
2304 const arelent
**b
= (const arelent
**) y
;
2305 bfd_size_type aadr
= (*a
)->address
;
2306 bfd_size_type badr
= (*b
)->address
;
2308 return (aadr
< badr
? -1 : badr
< aadr
? 1 : 0);
2311 #endif /* TARG_AUX */
2314 coff_write_relocs (abfd
, first_undef
)
2320 for (s
= abfd
->sections
; s
!= (asection
*) NULL
; s
= s
->next
)
2323 struct external_reloc dst
;
2329 /* sort relocations before we write them out */
2330 p
= (arelent
**) bfd_malloc (s
->reloc_count
* sizeof (arelent
*));
2331 if (p
== NULL
&& s
->reloc_count
> 0)
2333 memcpy (p
, s
->orelocation
, s
->reloc_count
* sizeof (arelent
*));
2334 qsort (p
, s
->reloc_count
, sizeof (arelent
*), compare_arelent_ptr
);
2337 if (bfd_seek (abfd
, s
->rel_filepos
, SEEK_SET
) != 0)
2339 for (i
= 0; i
< s
->reloc_count
; i
++)
2341 struct internal_reloc n
;
2343 memset ((PTR
) & n
, 0, sizeof (n
));
2345 /* Now we've renumbered the symbols we know where the
2346 undefined symbols live in the table. Check the reloc
2347 entries for symbols who's output bfd isn't the right one.
2348 This is because the symbol was undefined (which means
2349 that all the pointers are never made to point to the same
2350 place). This is a bad thing,'cause the symbols attached
2351 to the output bfd are indexed, so that the relocation
2352 entries know which symbol index they point to. So we
2353 have to look up the output symbol here. */
2355 if (q
->sym_ptr_ptr
[0]->the_bfd
!= abfd
)
2358 const char *sname
= q
->sym_ptr_ptr
[0]->name
;
2359 asymbol
**outsyms
= abfd
->outsymbols
;
2360 for (i
= first_undef
; outsyms
[i
]; i
++)
2362 const char *intable
= outsyms
[i
]->name
;
2363 if (strcmp (intable
, sname
) == 0) {
2364 /* got a hit, so repoint the reloc */
2365 q
->sym_ptr_ptr
= outsyms
+ i
;
2371 n
.r_vaddr
= q
->address
+ s
->vma
;
2374 /* The 29k const/consth reloc pair is a real kludge. The consth
2375 part doesn't have a symbol; it has an offset. So rebuilt
2377 if (q
->howto
->type
== R_IHCONST
)
2378 n
.r_symndx
= q
->addend
;
2383 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2384 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q
,s
))
2386 if (q
->sym_ptr_ptr
== bfd_abs_section_ptr
->symbol_ptr_ptr
)
2388 /* This is a relocation relative to the absolute symbol. */
2392 n
.r_symndx
= get_index ((*(q
->sym_ptr_ptr
)));
2393 /* Take notice if the symbol reloc points to a symbol
2394 we don't have in our symbol table. What should we
2396 if (n
.r_symndx
> obj_conv_table_size (abfd
))
2401 #ifdef SWAP_OUT_RELOC_OFFSET
2402 n
.r_offset
= q
->addend
;
2406 /* Work out reloc type from what is required */
2407 SELECT_RELOC (n
, q
->howto
);
2409 n
.r_type
= q
->howto
->type
;
2411 coff_swap_reloc_out (abfd
, &n
, &dst
);
2412 if (bfd_write ((PTR
) & dst
, 1, bfd_coff_relsz (abfd
), abfd
)
2413 != bfd_coff_relsz (abfd
))
2426 /* Set flags and magic number of a coff file from architecture and machine
2427 type. Result is true if we can represent the arch&type, false if not. */
2430 coff_set_flags (abfd
, magicp
, flagsp
)
2432 unsigned int *magicp ATTRIBUTE_UNUSED
;
2433 unsigned short *flagsp ATTRIBUTE_UNUSED
;
2435 switch (bfd_get_arch (abfd
))
2440 switch (bfd_get_mach (abfd
))
2442 case bfd_mach_z8001
:
2445 case bfd_mach_z8002
:
2459 *magicp
= I960ROMAGIC
;
2461 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2462 I960RWMAGIC); FIXME???
2464 switch (bfd_get_mach (abfd
))
2466 case bfd_mach_i960_core
:
2469 case bfd_mach_i960_kb_sb
:
2472 case bfd_mach_i960_mc
:
2475 case bfd_mach_i960_xa
:
2478 case bfd_mach_i960_ca
:
2481 case bfd_mach_i960_ka_sa
:
2484 case bfd_mach_i960_jx
:
2487 case bfd_mach_i960_hx
:
2500 case bfd_arch_tic30
:
2501 *magicp
= TIC30MAGIC
;
2505 #ifdef TICOFF_DEFAULT_MAGIC
2506 case TICOFF_TARGET_ARCH
:
2507 /* if there's no indication of which version we want, use the default */
2509 *magicp
= TICOFF_DEFAULT_MAGIC
;
2512 /* we may want to output in a different COFF version */
2513 switch (abfd
->xvec
->name
[4])
2516 *magicp
= TICOFF0MAGIC
;
2519 *magicp
= TICOFF1MAGIC
;
2522 *magicp
= TICOFF2MAGIC
;
2531 #ifdef TIC80_ARCH_MAGIC
2532 case bfd_arch_tic80
:
2533 *magicp
= TIC80_ARCH_MAGIC
;
2539 * magicp
= ARMPEMAGIC
;
2541 * magicp
= ARMMAGIC
;
2544 if (APCS_SET (abfd
))
2546 if (APCS_26_FLAG (abfd
))
2547 * flagsp
|= F_APCS26
;
2549 if (APCS_FLOAT_FLAG (abfd
))
2550 * flagsp
|= F_APCS_FLOAT
;
2552 if (PIC_FLAG (abfd
))
2555 if (INTERWORK_SET (abfd
) && INTERWORK_FLAG (abfd
))
2556 * flagsp
|= F_INTERWORK
;
2557 switch (bfd_get_mach (abfd
))
2559 case bfd_mach_arm_2
: * flagsp
|= F_ARM_2
; break;
2560 case bfd_mach_arm_2a
: * flagsp
|= F_ARM_2a
; break;
2561 case bfd_mach_arm_3
: * flagsp
|= F_ARM_3
; break;
2562 case bfd_mach_arm_3M
: * flagsp
|= F_ARM_3M
; break;
2563 case bfd_mach_arm_4
: * flagsp
|= F_ARM_4
; break;
2564 case bfd_mach_arm_4T
: * flagsp
|= F_ARM_4T
; break;
2565 case bfd_mach_arm_5
: * flagsp
|= F_ARM_5
; break;
2566 case bfd_mach_arm_5T
: * flagsp
|= F_ARM_5
; break; /* XXX - we do not have an F_ARM_5T */
2571 case bfd_arch_powerpc
:
2578 *magicp
= I386MAGIC
;
2580 /* Just overwrite the usual value if we're doing Lynx. */
2581 *magicp
= LYNXCOFFMAGIC
;
2588 *magicp
= I860MAGIC
;
2594 *magicp
= IA64MAGIC
;
2600 #ifdef APOLLOM68KMAGIC
2601 *magicp
= APOLLO_COFF_VERSION_NUMBER
;
2603 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2604 #ifdef NAMES_HAVE_UNDERSCORE
2605 *magicp
= MC68KBCSMAGIC
;
2607 *magicp
= MC68MAGIC
;
2611 /* Just overwrite the usual value if we're doing Lynx. */
2612 *magicp
= LYNXCOFFMAGIC
;
2620 *magicp
= MC88OMAGIC
;
2625 case bfd_arch_h8300
:
2626 switch (bfd_get_mach (abfd
))
2628 case bfd_mach_h8300
:
2629 *magicp
= H8300MAGIC
;
2631 case bfd_mach_h8300h
:
2632 *magicp
= H8300HMAGIC
;
2634 case bfd_mach_h8300s
:
2635 *magicp
= H8300SMAGIC
;
2641 #ifdef SH_ARCH_MAGIC_BIG
2643 #ifdef COFF_IMAGE_WITH_PE
2644 *magicp
= SH_ARCH_MAGIC_WINCE
;
2646 if (bfd_big_endian (abfd
))
2647 *magicp
= SH_ARCH_MAGIC_BIG
;
2649 *magicp
= SH_ARCH_MAGIC_LITTLE
;
2655 #ifdef MIPS_ARCH_MAGIC_WINCE
2657 *magicp
= MIPS_ARCH_MAGIC_WINCE
;
2663 case bfd_arch_sparc
:
2664 *magicp
= SPARCMAGIC
;
2666 /* Just overwrite the usual value if we're doing Lynx. */
2667 *magicp
= LYNXCOFFMAGIC
;
2674 case bfd_arch_h8500
:
2675 *magicp
= H8500MAGIC
;
2679 #ifdef A29K_MAGIC_BIG
2681 if (bfd_big_endian (abfd
))
2682 *magicp
= A29K_MAGIC_BIG
;
2684 *magicp
= A29K_MAGIC_LITTLE
;
2690 case bfd_arch_we32k
:
2691 *magicp
= WE32KMAGIC
;
2697 case bfd_arch_rs6000
:
2699 case bfd_arch_powerpc
:
2702 if (bfd_get_mach (abfd
) == bfd_mach_ppc_620
2703 && !strncmp (abfd
->xvec
->name
,"aix", 3))
2704 *magicp
= U803XTOCMAGIC
;
2707 *magicp
= U802TOCMAGIC
;
2714 case bfd_arch_mcore
:
2715 * magicp
= MCOREMAGIC
;
2725 default: /* Unknown architecture. */
2726 /* Fall through to "return false" below, to avoid
2727 "statement never reached" errors on the one below. */
2736 coff_set_arch_mach (abfd
, arch
, machine
)
2738 enum bfd_architecture arch
;
2739 unsigned long machine
;
2742 unsigned short dummy2
;
2744 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
2747 if (arch
!= bfd_arch_unknown
&&
2748 coff_set_flags (abfd
, &dummy1
, &dummy2
) != true)
2749 return false; /* We can't represent this type */
2751 return true; /* We're easy ... */
2754 #ifdef COFF_IMAGE_WITH_PE
2756 /* This is used to sort sections by VMA, as required by PE image
2759 static int sort_by_secaddr
PARAMS ((const PTR
, const PTR
));
2762 sort_by_secaddr (arg1
, arg2
)
2766 const asection
*a
= *(const asection
**) arg1
;
2767 const asection
*b
= *(const asection
**) arg2
;
2769 if (a
->vma
< b
->vma
)
2771 else if (a
->vma
> b
->vma
)
2777 #endif /* COFF_IMAGE_WITH_PE */
2779 /* Calculate the file position for each section. */
2782 #define ALIGN_SECTIONS_IN_FILE
2784 #if defined(TIC80COFF) || defined(TICOFF)
2785 #undef ALIGN_SECTIONS_IN_FILE
2789 coff_compute_section_file_positions (abfd
)
2793 asection
*previous
= (asection
*) NULL
;
2794 file_ptr sofar
= bfd_coff_filhsz (abfd
);
2795 boolean align_adjust
;
2796 #ifdef ALIGN_SECTIONS_IN_FILE
2801 /* On XCOFF, if we have symbols, set up the .debug section. */
2802 if (bfd_get_symcount (abfd
) > 0)
2805 bfd_size_type i
, symcount
;
2809 symcount
= bfd_get_symcount (abfd
);
2810 for (symp
= abfd
->outsymbols
, i
= 0; i
< symcount
; symp
++, i
++)
2812 coff_symbol_type
*cf
;
2814 cf
= coff_symbol_from (abfd
, *symp
);
2816 && cf
->native
!= NULL
2817 && SYMNAME_IN_DEBUG (&cf
->native
->u
.syment
))
2821 len
= strlen (bfd_asymbol_name (*symp
));
2822 if (len
> SYMNMLEN
|| bfd_coff_force_symnames_in_strings (abfd
))
2823 sz
+= len
+ 1 + bfd_coff_debug_string_prefix_length (abfd
);
2830 dsec
= bfd_make_section_old_way (abfd
, ".debug");
2833 dsec
->_raw_size
= sz
;
2834 dsec
->flags
|= SEC_HAS_CONTENTS
;
2839 #ifdef COFF_IMAGE_WITH_PE
2841 if (coff_data (abfd
)->link_info
)
2843 page_size
= pe_data (abfd
)->pe_opthdr
.FileAlignment
;
2846 page_size
= PE_DEF_FILE_ALIGNMENT
;
2848 #ifdef COFF_PAGE_SIZE
2849 int page_size
= COFF_PAGE_SIZE
;
2853 if (bfd_get_start_address (abfd
))
2855 /* A start address may have been added to the original file. In this
2856 case it will need an optional header to record it. */
2857 abfd
->flags
|= EXEC_P
;
2860 if (abfd
->flags
& EXEC_P
)
2861 sofar
+= bfd_coff_aoutsz (abfd
);
2863 else if (xcoff_data (abfd
)->full_aouthdr
)
2864 sofar
+= bfd_coff_aoutsz (abfd
);
2866 sofar
+= SMALL_AOUTSZ
;
2869 sofar
+= abfd
->section_count
* bfd_coff_scnhsz (abfd
);
2872 /* XCOFF handles overflows in the reloc and line number count fields
2873 by allocating a new section header to hold the correct counts. */
2874 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2875 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2876 sofar
+= bfd_coff_scnhsz (abfd
);
2879 #ifdef COFF_IMAGE_WITH_PE
2881 /* PE requires the sections to be in memory order when listed in
2882 the section headers. It also does not like empty loadable
2883 sections. The sections apparently do not have to be in the
2884 right order in the image file itself, but we do need to get the
2885 target_index values right. */
2888 asection
**section_list
;
2893 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2896 /* We allocate an extra cell to simplify the final loop. */
2897 section_list
= bfd_malloc (sizeof (struct asection
*) * (count
+ 1));
2898 if (section_list
== NULL
)
2902 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2904 section_list
[i
] = current
;
2907 section_list
[i
] = NULL
;
2909 qsort (section_list
, count
, sizeof (asection
*), sort_by_secaddr
);
2911 /* Rethread the linked list into sorted order; at the same time,
2912 assign target_index values. */
2914 abfd
->sections
= section_list
[0];
2915 for (i
= 0; i
< count
; i
++)
2917 current
= section_list
[i
];
2918 current
->next
= section_list
[i
+ 1];
2920 /* Later, if the section has zero size, we'll be throwing it
2921 away, so we don't want to number it now. Note that having
2922 a zero size and having real contents are different
2923 concepts: .bss has no contents, but (usually) non-zero
2925 if (current
->_raw_size
== 0)
2927 /* Discard. However, it still might have (valid) symbols
2928 in it, so arbitrarily set it to section 1 (indexing is
2929 1-based here; usually .text). __end__ and other
2930 contents of .endsection really have this happen.
2931 FIXME: This seems somewhat dubious. */
2932 current
->target_index
= 1;
2935 current
->target_index
= target_index
++;
2938 free (section_list
);
2940 #else /* ! COFF_IMAGE_WITH_PE */
2942 /* Set the target_index field. */
2946 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2947 current
->target_index
= target_index
++;
2949 #endif /* ! COFF_IMAGE_WITH_PE */
2951 align_adjust
= false;
2952 for (current
= abfd
->sections
;
2953 current
!= (asection
*) NULL
;
2954 current
= current
->next
)
2956 #ifdef COFF_IMAGE_WITH_PE
2957 /* With PE we have to pad each section to be a multiple of its
2958 page size too, and remember both sizes. */
2959 if (coff_section_data (abfd
, current
) == NULL
)
2961 current
->used_by_bfd
=
2962 (PTR
) bfd_zalloc (abfd
, sizeof (struct coff_section_tdata
));
2963 if (current
->used_by_bfd
== NULL
)
2966 if (pei_section_data (abfd
, current
) == NULL
)
2968 coff_section_data (abfd
, current
)->tdata
=
2969 (PTR
) bfd_zalloc (abfd
, sizeof (struct pei_section_tdata
));
2970 if (coff_section_data (abfd
, current
)->tdata
== NULL
)
2973 if (pei_section_data (abfd
, current
)->virt_size
== 0)
2974 pei_section_data (abfd
, current
)->virt_size
= current
->_raw_size
;
2977 /* Only deal with sections which have contents. */
2978 if (!(current
->flags
& SEC_HAS_CONTENTS
))
2981 #ifdef COFF_IMAGE_WITH_PE
2982 /* Make sure we skip empty sections in a PE image. */
2983 if (current
->_raw_size
== 0)
2987 /* Align the sections in the file to the same boundary on
2988 which they are aligned in virtual memory. I960 doesn't
2989 do this (FIXME) so we can stay in sync with Intel. 960
2990 doesn't yet page from files... */
2991 #ifdef ALIGN_SECTIONS_IN_FILE
2992 if ((abfd
->flags
& EXEC_P
) != 0)
2994 /* make sure this section is aligned on the right boundary - by
2995 padding the previous section up if necessary */
2998 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
2999 if (previous
!= (asection
*) NULL
)
3001 previous
->_raw_size
+= sofar
- old_sofar
;
3007 /* In demand paged files the low order bits of the file offset
3008 must match the low order bits of the virtual address. */
3009 #ifdef COFF_PAGE_SIZE
3010 if ((abfd
->flags
& D_PAGED
) != 0
3011 && (current
->flags
& SEC_ALLOC
) != 0)
3012 sofar
+= (current
->vma
- sofar
) % page_size
;
3014 current
->filepos
= sofar
;
3016 #ifdef COFF_IMAGE_WITH_PE
3017 /* Set the padded size. */
3018 current
->_raw_size
= (current
->_raw_size
+ page_size
-1) & -page_size
;
3021 sofar
+= current
->_raw_size
;
3023 #ifdef ALIGN_SECTIONS_IN_FILE
3024 /* make sure that this section is of the right size too */
3025 if ((abfd
->flags
& EXEC_P
) == 0)
3027 bfd_size_type old_size
;
3029 old_size
= current
->_raw_size
;
3030 current
->_raw_size
= BFD_ALIGN (current
->_raw_size
,
3031 1 << current
->alignment_power
);
3032 align_adjust
= current
->_raw_size
!= old_size
;
3033 sofar
+= current
->_raw_size
- old_size
;
3038 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
3039 align_adjust
= sofar
!= old_sofar
;
3040 current
->_raw_size
+= sofar
- old_sofar
;
3044 #ifdef COFF_IMAGE_WITH_PE
3045 /* For PE we need to make sure we pad out to the aligned
3046 _raw_size, in case the caller only writes out data to the
3047 unaligned _raw_size. */
3048 if (pei_section_data (abfd
, current
)->virt_size
< current
->_raw_size
)
3049 align_adjust
= true;
3053 /* Force .lib sections to start at zero. The vma is then
3054 incremented in coff_set_section_contents. This is right for
3056 if (strcmp (current
->name
, _LIB
) == 0)
3057 bfd_set_section_vma (abfd
, current
, 0);
3063 /* It is now safe to write to the output file. If we needed an
3064 alignment adjustment for the last section, then make sure that
3065 there is a byte at offset sofar. If there are no symbols and no
3066 relocs, then nothing follows the last section. If we don't force
3067 the last byte out, then the file may appear to be truncated. */
3073 if (bfd_seek (abfd
, sofar
- 1, SEEK_SET
) != 0
3074 || bfd_write (&b
, 1, 1, abfd
) != 1)
3078 /* Make sure the relocations are aligned. We don't need to make
3079 sure that this byte exists, because it will only matter if there
3080 really are relocs. */
3081 sofar
= BFD_ALIGN (sofar
, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER
);
3083 obj_relocbase (abfd
) = sofar
;
3084 abfd
->output_has_begun
= true;
3091 /* This can never work, because it is called too late--after the
3092 section positions have been set. I can't figure out what it is
3093 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3095 /* If .file, .text, .data, .bss symbols are missing, add them. */
3096 /* @@ Should we only be adding missing symbols, or overriding the aux
3097 values for existing section symbols? */
3099 coff_add_missing_symbols (abfd
)
3102 unsigned int nsyms
= bfd_get_symcount (abfd
);
3103 asymbol
**sympp
= abfd
->outsymbols
;
3106 int need_text
= 1, need_data
= 1, need_bss
= 1, need_file
= 1;
3108 for (i
= 0; i
< nsyms
; i
++)
3110 coff_symbol_type
*csym
= coff_symbol_from (abfd
, sympp
[i
]);
3114 /* only do this if there is a coff representation of the input
3116 if (csym
->native
&& csym
->native
->u
.syment
.n_sclass
== C_FILE
)
3121 name
= csym
->symbol
.name
;
3124 if (!strcmp (name
, _TEXT
))
3127 else if (!strcmp (name
, ".wtext"))
3130 else if (!strcmp (name
, _DATA
))
3132 else if (!strcmp (name
, _BSS
))
3136 /* Now i == bfd_get_symcount (abfd). */
3137 /* @@ For now, don't deal with .file symbol. */
3140 if (!need_text
&& !need_data
&& !need_bss
&& !need_file
)
3142 nsyms
+= need_text
+ need_data
+ need_bss
+ need_file
;
3143 sympp2
= (asymbol
**) bfd_alloc (abfd
, nsyms
* sizeof (asymbol
*));
3146 memcpy (sympp2
, sympp
, i
* sizeof (asymbol
*));
3149 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3153 sympp2
[i
++] = coff_section_symbol (abfd
, _TEXT
);
3155 sympp2
[i
++] = coff_section_symbol (abfd
, _DATA
);
3157 sympp2
[i
++] = coff_section_symbol (abfd
, _BSS
);
3158 BFD_ASSERT (i
== nsyms
);
3159 bfd_set_symtab (abfd
, sympp2
, nsyms
);
3168 coff_write_object_contents (abfd
)
3172 boolean hasrelocs
= false;
3173 boolean haslinno
= false;
3174 boolean hasdebug
= false;
3176 file_ptr reloc_base
;
3177 file_ptr lineno_base
;
3179 unsigned long reloc_size
= 0;
3180 unsigned long lnno_size
= 0;
3181 boolean long_section_names
;
3182 asection
*text_sec
= NULL
;
3183 asection
*data_sec
= NULL
;
3184 asection
*bss_sec
= NULL
;
3185 struct internal_filehdr internal_f
;
3186 struct internal_aouthdr internal_a
;
3187 #ifdef COFF_LONG_SECTION_NAMES
3188 size_t string_size
= STRING_SIZE_SIZE
;
3191 bfd_set_error (bfd_error_system_call
);
3193 /* Make a pass through the symbol table to count line number entries and
3194 put them into the correct asections */
3196 lnno_size
= coff_count_linenumbers (abfd
) * bfd_coff_linesz (abfd
);
3198 if (abfd
->output_has_begun
== false)
3200 if (! coff_compute_section_file_positions (abfd
))
3204 reloc_base
= obj_relocbase (abfd
);
3206 /* Work out the size of the reloc and linno areas */
3208 for (current
= abfd
->sections
; current
!= NULL
; current
=
3210 reloc_size
+= current
->reloc_count
* bfd_coff_relsz (abfd
);
3212 lineno_base
= reloc_base
+ reloc_size
;
3213 sym_base
= lineno_base
+ lnno_size
;
3215 /* Indicate in each section->line_filepos its actual file address */
3216 for (current
= abfd
->sections
; current
!= NULL
; current
=
3219 if (current
->lineno_count
)
3221 current
->line_filepos
= lineno_base
;
3222 current
->moving_line_filepos
= lineno_base
;
3223 lineno_base
+= current
->lineno_count
* bfd_coff_linesz (abfd
);
3227 current
->line_filepos
= 0;
3229 if (current
->reloc_count
)
3231 current
->rel_filepos
= reloc_base
;
3232 reloc_base
+= current
->reloc_count
* bfd_coff_relsz (abfd
);
3236 current
->rel_filepos
= 0;
3240 /* Write section headers to the file. */
3241 internal_f
.f_nscns
= 0;
3243 if ((abfd
->flags
& EXEC_P
) != 0)
3244 scn_base
= bfd_coff_filhsz (abfd
) + bfd_coff_aoutsz (abfd
);
3247 scn_base
= bfd_coff_filhsz (abfd
);
3249 if (xcoff_data (abfd
)->full_aouthdr
)
3250 scn_base
+= bfd_coff_aoutsz (abfd
);
3252 scn_base
+= SMALL_AOUTSZ
;
3256 if (bfd_seek (abfd
, scn_base
, SEEK_SET
) != 0)
3259 long_section_names
= false;
3260 for (current
= abfd
->sections
;
3262 current
= current
->next
)
3264 struct internal_scnhdr section
;
3265 boolean is_reloc_section
= false;
3267 #ifdef COFF_IMAGE_WITH_PE
3268 if (strcmp (current
->name
, ".reloc") == 0)
3270 is_reloc_section
= true;
3272 pe_data (abfd
)->has_reloc_section
= 1;
3276 internal_f
.f_nscns
++;
3278 strncpy (section
.s_name
, current
->name
, SCNNMLEN
);
3280 #ifdef COFF_LONG_SECTION_NAMES
3281 /* Handle long section names as in PE. This must be compatible
3282 with the code in coff_write_symbols and _bfd_coff_final_link. */
3286 len
= strlen (current
->name
);
3289 memset (section
.s_name
, 0, SCNNMLEN
);
3290 sprintf (section
.s_name
, "/%lu", (unsigned long) string_size
);
3291 string_size
+= len
+ 1;
3292 long_section_names
= true;
3298 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3299 Ian Taylor <ian@cygnus.com>. */
3300 if (strcmp (current
->name
, _LIB
) == 0)
3301 section
.s_vaddr
= 0;
3304 section
.s_vaddr
= current
->vma
;
3305 section
.s_paddr
= current
->lma
;
3306 section
.s_size
= current
->_raw_size
;
3307 #ifdef coff_get_section_load_page
3308 section
.s_page
= coff_get_section_load_page (current
);
3312 section
.s_paddr
= 0;
3314 #ifdef COFF_IMAGE_WITH_PE
3315 /* Reminder: s_paddr holds the virtual size of the section. */
3316 if (coff_section_data (abfd
, current
) != NULL
3317 && pei_section_data (abfd
, current
) != NULL
)
3318 section
.s_paddr
= pei_section_data (abfd
, current
)->virt_size
;
3320 section
.s_paddr
= 0;
3324 If this section has no size or is unloadable then the scnptr
3327 if (current
->_raw_size
== 0 ||
3328 (current
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
3330 section
.s_scnptr
= 0;
3334 section
.s_scnptr
= current
->filepos
;
3336 section
.s_relptr
= current
->rel_filepos
;
3337 section
.s_lnnoptr
= current
->line_filepos
;
3338 section
.s_nreloc
= current
->reloc_count
;
3339 section
.s_nlnno
= current
->lineno_count
;
3340 #ifndef COFF_IMAGE_WITH_PE
3341 /* In PEI, relocs come in the .reloc section. */
3342 if (current
->reloc_count
!= 0)
3345 if (current
->lineno_count
!= 0)
3347 if ((current
->flags
& SEC_DEBUGGING
) != 0
3348 && ! is_reloc_section
)
3353 /* Indicate the use of an XCOFF overflow section header. */
3354 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3356 section
.s_nreloc
= 0xffff;
3357 section
.s_nlnno
= 0xffff;
3362 section
.s_flags
= sec_to_styp_flags (current
->name
, current
->flags
);
3364 if (!strcmp (current
->name
, _TEXT
))
3368 else if (!strcmp (current
->name
, _DATA
))
3372 else if (!strcmp (current
->name
, _BSS
))
3378 section
.s_align
= (current
->alignment_power
3379 ? 1 << current
->alignment_power
3383 /* TI COFF puts the alignment power in bits 8-11 of the flags */
3384 section
.s_flags
|= (current
->alignment_power
& 0xF) << 8;
3386 #ifdef COFF_ENCODE_ALIGNMENT
3387 COFF_ENCODE_ALIGNMENT(section
, current
->alignment_power
);
3390 #ifdef COFF_IMAGE_WITH_PE
3391 /* Suppress output of the sections if they are null. ld
3392 includes the bss and data sections even if there is no size
3393 assigned to them. NT loader doesn't like it if these section
3394 headers are included if the sections themselves are not
3395 needed. See also coff_compute_section_file_positions. */
3396 if (section
.s_size
== 0)
3397 internal_f
.f_nscns
--;
3402 if (coff_swap_scnhdr_out (abfd
, §ion
, &buff
) == 0
3403 || bfd_write ((PTR
) (&buff
), 1, bfd_coff_scnhsz (abfd
), abfd
)
3404 != bfd_coff_scnhsz (abfd
))
3409 /* PE stores COMDAT section information in the symbol table. If
3410 this section is supposed to have some COMDAT info, track down
3411 the symbol in the symbol table and modify it. */
3412 if ((current
->flags
& SEC_LINK_ONCE
) != 0)
3414 unsigned int i
, count
;
3416 coff_symbol_type
*csym
= NULL
;
3420 count
= bfd_get_symcount (abfd
);
3421 for (i
= 0, psym
= abfd
->outsymbols
; i
< count
; i
++, psym
++)
3423 if ((*psym
)->section
!= current
)
3426 /* Remember the location of the first symbol in this
3428 if (psymsec
== NULL
)
3431 /* See if this is the section symbol. */
3432 if (strcmp ((*psym
)->name
, current
->name
) == 0)
3434 csym
= coff_symbol_from (abfd
, *psym
);
3436 || csym
->native
== NULL
3437 || csym
->native
->u
.syment
.n_numaux
< 1
3438 || csym
->native
->u
.syment
.n_sclass
!= C_STAT
3439 || csym
->native
->u
.syment
.n_type
!= T_NULL
)
3442 /* Here *PSYM is the section symbol for CURRENT. */
3449 Note that we might not if we're converting the file from
3450 some other object file format. */
3453 combined_entry_type
*aux
;
3455 /* We don't touch the x_checksum field. The
3456 x_associated field is not currently supported. */
3458 aux
= csym
->native
+ 1;
3459 switch (current
->flags
& SEC_LINK_DUPLICATES
)
3461 case SEC_LINK_DUPLICATES_DISCARD
:
3462 aux
->u
.auxent
.x_scn
.x_comdat
= IMAGE_COMDAT_SELECT_ANY
;
3465 case SEC_LINK_DUPLICATES_ONE_ONLY
:
3466 aux
->u
.auxent
.x_scn
.x_comdat
=
3467 IMAGE_COMDAT_SELECT_NODUPLICATES
;
3470 case SEC_LINK_DUPLICATES_SAME_SIZE
:
3471 aux
->u
.auxent
.x_scn
.x_comdat
=
3472 IMAGE_COMDAT_SELECT_SAME_SIZE
;
3475 case SEC_LINK_DUPLICATES_SAME_CONTENTS
:
3476 aux
->u
.auxent
.x_scn
.x_comdat
=
3477 IMAGE_COMDAT_SELECT_EXACT_MATCH
;
3481 /* The COMDAT symbol must be the first symbol from this
3482 section in the symbol table. In order to make this
3483 work, we move the COMDAT symbol before the first
3484 symbol we found in the search above. It's OK to
3485 rearrange the symbol table at this point, because
3486 coff_renumber_symbols is going to rearrange it
3487 further and fix up all the aux entries. */
3488 if (psym
!= psymsec
)
3494 for (pcopy
= psym
; pcopy
> psymsec
; pcopy
--)
3495 pcopy
[0] = pcopy
[-1];
3500 #endif /* COFF_WITH_PE */
3504 /* XCOFF handles overflows in the reloc and line number count fields
3505 by creating a new section header to hold the correct values. */
3506 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
3508 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3510 struct internal_scnhdr scnhdr
;
3513 internal_f
.f_nscns
++;
3514 strncpy (&(scnhdr
.s_name
[0]), current
->name
, 8);
3515 scnhdr
.s_paddr
= current
->reloc_count
;
3516 scnhdr
.s_vaddr
= current
->lineno_count
;
3518 scnhdr
.s_scnptr
= 0;
3519 scnhdr
.s_relptr
= current
->rel_filepos
;
3520 scnhdr
.s_lnnoptr
= current
->line_filepos
;
3521 scnhdr
.s_nreloc
= current
->target_index
;
3522 scnhdr
.s_nlnno
= current
->target_index
;
3523 scnhdr
.s_flags
= STYP_OVRFLO
;
3524 if (coff_swap_scnhdr_out (abfd
, &scnhdr
, &buff
) == 0
3525 || bfd_write ((PTR
) &buff
, 1, bfd_coff_scnhsz (abfd
), abfd
)
3526 != bfd_coff_scnhsz (abfd
))
3532 /* OK, now set up the filehdr... */
3534 /* Don't include the internal abs section in the section count */
3537 We will NOT put a fucking timestamp in the header here. Every time you
3538 put it back, I will come in and take it out again. I'm sorry. This
3539 field does not belong here. We fill it with a 0 so it compares the
3540 same but is not a reasonable time. -- gnu@cygnus.com
3542 internal_f
.f_timdat
= 0;
3544 internal_f
.f_flags
= 0;
3546 if (abfd
->flags
& EXEC_P
)
3547 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
3550 internal_f
.f_opthdr
= 0;
3552 if (xcoff_data (abfd
)->full_aouthdr
)
3553 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
3555 internal_f
.f_opthdr
= SMALL_AOUTSZ
;
3560 internal_f
.f_flags
|= F_RELFLG
;
3562 internal_f
.f_flags
|= F_LNNO
;
3563 if (abfd
->flags
& EXEC_P
)
3564 internal_f
.f_flags
|= F_EXEC
;
3565 #ifdef COFF_IMAGE_WITH_PE
3567 internal_f
.f_flags
|= IMAGE_FILE_DEBUG_STRIPPED
;
3570 #ifndef COFF_WITH_PE
3571 if (bfd_little_endian (abfd
))
3572 internal_f
.f_flags
|= F_AR32WR
;
3574 internal_f
.f_flags
|= F_AR32W
;
3578 /* target id is used in TI COFF v1 and later; COFF0 won't use this field,
3579 but it doesn't hurt to set it internally */
3580 internal_f
.f_target_id
= TI_TARGET_ID
;
3582 #ifdef TIC80_TARGET_ID
3583 internal_f
.f_target_id
= TIC80_TARGET_ID
;
3587 FIXME, should do something about the other byte orders and
3592 if ((abfd
->flags
& DYNAMIC
) != 0)
3593 internal_f
.f_flags
|= F_SHROBJ
;
3594 if (bfd_get_section_by_name (abfd
, _LOADER
) != NULL
)
3595 internal_f
.f_flags
|= F_DYNLOAD
;
3598 memset (&internal_a
, 0, sizeof internal_a
);
3600 /* Set up architecture-dependent stuff */
3603 unsigned int magic
= 0;
3604 unsigned short flags
= 0;
3605 coff_set_flags (abfd
, &magic
, &flags
);
3606 internal_f
.f_magic
= magic
;
3607 internal_f
.f_flags
|= flags
;
3608 /* ...and the "opt"hdr... */
3611 #ifdef ULTRA3 /* NYU's machine */
3612 /* FIXME: This is a bogus check. I really want to see if there
3613 * is a .shbss or a .shdata section, if so then set the magic
3614 * number to indicate a shared data executable.
3616 if (internal_f
.f_nscns
>= 7)
3617 internal_a
.magic
= SHMAGIC
; /* Shared magic */
3620 internal_a
.magic
= NMAGIC
; /* Assume separate i/d */
3621 #define __A_MAGIC_SET__
3623 #ifdef TICOFF_AOUT_MAGIC
3624 internal_a
.magic
= TICOFF_AOUT_MAGIC
;
3625 #define __A_MAGIC_SET__
3628 internal_a
.magic
= TIC80_ARCH_MAGIC
;
3629 #define __A_MAGIC_SET__
3632 /* FIXME: What are the a.out magic numbers for the i860? */
3633 internal_a
.magic
= 0;
3634 #define __A_MAGIC_SET__
3637 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
3638 #define __A_MAGIC_SET__
3641 #define __A_MAGIC_SET__
3642 internal_a
.magic
= PAGEMAGICBCS
;
3646 #define __A_MAGIC_SET__
3647 internal_a
.magic
= APOLLO_COFF_VERSION_NUMBER
;
3650 #if defined(M68) || defined(WE32K) || defined(M68K)
3651 #define __A_MAGIC_SET__
3653 internal_a
.magic
= LYNXCOFFMAGIC
;
3655 #if defined(TARG_AUX)
3656 internal_a
.magic
= (abfd
->flags
& D_PAGED
? PAGEMAGICPEXECPAGED
:
3657 abfd
->flags
& WP_TEXT
? PAGEMAGICPEXECSWAPPED
:
3658 PAGEMAGICEXECSWAPPED
);
3660 #if defined (PAGEMAGICPEXECPAGED)
3661 internal_a
.magic
= PAGEMAGICPEXECPAGED
;
3663 #endif /* TARG_AUX */
3665 #endif /* M68 || WE32K || M68K */
3668 #define __A_MAGIC_SET__
3669 internal_a
.magic
= ZMAGIC
;
3673 #define __A_MAGIC_SET__
3674 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
3677 #if defined MCORE_PE
3678 #define __A_MAGIC_SET__
3679 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
3683 #define __A_MAGIC_SET__
3685 internal_a
.magic
= LYNXCOFFMAGIC
;
3687 internal_a
.magic
= ZMAGIC
;
3692 #define __A_MAGIC_SET__
3693 internal_a
.magic
= ZMAGIC
;
3697 #define __A_MAGIC_SET__
3699 internal_a
.magic
= LYNXCOFFMAGIC
;
3704 #define __A_MAGIC_SET__
3705 internal_a
.magic
= (abfd
->flags
& D_PAGED
) ? RS6K_AOUTHDR_ZMAGIC
:
3706 (abfd
->flags
& WP_TEXT
) ? RS6K_AOUTHDR_NMAGIC
:
3707 RS6K_AOUTHDR_OMAGIC
;
3710 #if defined(SH) && defined(COFF_WITH_PE)
3711 #define __A_MAGIC_SET__
3712 internal_a
.magic
= SH_PE_MAGIC
;
3715 #if defined(MIPS) && defined(COFF_WITH_PE)
3716 #define __A_MAGIC_SET__
3717 internal_a
.magic
= MIPS_PE_MAGIC
;
3720 #ifndef __A_MAGIC_SET__
3721 #include "Your aouthdr magic number is not being set!"
3723 #undef __A_MAGIC_SET__
3727 /* FIXME: Does anybody ever set this to another value? */
3728 internal_a
.vstamp
= 0;
3730 /* Now should write relocs, strings, syms */
3731 obj_sym_filepos (abfd
) = sym_base
;
3733 if (bfd_get_symcount (abfd
) != 0)
3737 if (!coff_add_missing_symbols (abfd
))
3740 if (!coff_renumber_symbols (abfd
, &firstundef
))
3742 coff_mangle_symbols (abfd
);
3743 if (! coff_write_symbols (abfd
))
3745 if (! coff_write_linenumbers (abfd
))
3747 if (! coff_write_relocs (abfd
, firstundef
))
3750 #ifdef COFF_LONG_SECTION_NAMES
3751 else if (long_section_names
)
3753 /* If we have long section names we have to write out the string
3754 table even if there are no symbols. */
3755 if (! coff_write_symbols (abfd
))
3759 #ifdef COFF_IMAGE_WITH_PE
3761 else if ((abfd
->flags
& EXEC_P
) != 0)
3765 /* PowerPC PE appears to require that all executable files be
3766 rounded up to the page size. */
3769 BFD_ALIGN (sym_base
, COFF_PAGE_SIZE
) - 1,
3771 || bfd_write (&b
, 1, 1, abfd
) != 1)
3777 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
3778 backend linker, and obj_raw_syment_count is not valid until after
3779 coff_write_symbols is called. */
3780 if (obj_raw_syment_count (abfd
) != 0)
3782 internal_f
.f_symptr
= sym_base
;
3784 /* AIX appears to require that F_RELFLG not be set if there are
3785 local symbols but no relocations. */
3786 internal_f
.f_flags
&=~ F_RELFLG
;
3791 if (long_section_names
)
3792 internal_f
.f_symptr
= sym_base
;
3794 internal_f
.f_symptr
= 0;
3795 internal_f
.f_flags
|= F_LSYMS
;
3800 internal_a
.tsize
= bfd_get_section_size_before_reloc (text_sec
);
3801 internal_a
.text_start
= internal_a
.tsize
? text_sec
->vma
: 0;
3805 internal_a
.dsize
= bfd_get_section_size_before_reloc (data_sec
);
3806 internal_a
.data_start
= internal_a
.dsize
? data_sec
->vma
: 0;
3810 internal_a
.bsize
= bfd_get_section_size_before_reloc (bss_sec
);
3811 if (internal_a
.bsize
&& bss_sec
->vma
< internal_a
.data_start
)
3812 internal_a
.data_start
= bss_sec
->vma
;
3815 internal_a
.entry
= bfd_get_start_address (abfd
);
3816 internal_f
.f_nsyms
= obj_raw_syment_count (abfd
);
3819 if (xcoff_data (abfd
)->full_aouthdr
)
3822 asection
*loader_sec
;
3824 internal_a
.vstamp
= 1;
3826 internal_a
.o_snentry
= xcoff_data (abfd
)->snentry
;
3827 if (internal_a
.o_snentry
== 0)
3828 internal_a
.entry
= (bfd_vma
) -1;
3830 if (text_sec
!= NULL
)
3832 internal_a
.o_sntext
= text_sec
->target_index
;
3833 internal_a
.o_algntext
= bfd_get_section_alignment (abfd
, text_sec
);
3837 internal_a
.o_sntext
= 0;
3838 internal_a
.o_algntext
= 0;
3840 if (data_sec
!= NULL
)
3842 internal_a
.o_sndata
= data_sec
->target_index
;
3843 internal_a
.o_algndata
= bfd_get_section_alignment (abfd
, data_sec
);
3847 internal_a
.o_sndata
= 0;
3848 internal_a
.o_algndata
= 0;
3850 loader_sec
= bfd_get_section_by_name (abfd
, ".loader");
3851 if (loader_sec
!= NULL
)
3852 internal_a
.o_snloader
= loader_sec
->target_index
;
3854 internal_a
.o_snloader
= 0;
3855 if (bss_sec
!= NULL
)
3856 internal_a
.o_snbss
= bss_sec
->target_index
;
3858 internal_a
.o_snbss
= 0;
3860 toc
= xcoff_data (abfd
)->toc
;
3861 internal_a
.o_toc
= toc
;
3862 internal_a
.o_sntoc
= xcoff_data (abfd
)->sntoc
;
3864 internal_a
.o_modtype
= xcoff_data (abfd
)->modtype
;
3865 if (xcoff_data (abfd
)->cputype
!= -1)
3866 internal_a
.o_cputype
= xcoff_data (abfd
)->cputype
;
3869 switch (bfd_get_arch (abfd
))
3871 case bfd_arch_rs6000
:
3872 internal_a
.o_cputype
= 4;
3874 case bfd_arch_powerpc
:
3875 if (bfd_get_mach (abfd
) == 0)
3876 internal_a
.o_cputype
= 3;
3878 internal_a
.o_cputype
= 1;
3884 internal_a
.o_maxstack
= xcoff_data (abfd
)->maxstack
;
3885 internal_a
.o_maxdata
= xcoff_data (abfd
)->maxdata
;
3889 /* now write them */
3890 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
3895 bfd_size_type amount
;
3897 buff
= bfd_malloc (bfd_coff_filhsz (abfd
));
3901 coff_swap_filehdr_out (abfd
, (PTR
) & internal_f
, (PTR
) buff
);
3902 amount
= bfd_write ((PTR
) buff
, 1, bfd_coff_filhsz (abfd
), abfd
);
3906 if (amount
!= bfd_coff_filhsz (abfd
))
3910 if (abfd
->flags
& EXEC_P
)
3912 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
3913 include/coff/pe.h sets AOUTSZ == sizeof(PEAOUTHDR)) */
3915 bfd_size_type amount
;
3917 buff
= bfd_malloc (bfd_coff_aoutsz (abfd
));
3921 coff_swap_aouthdr_out (abfd
, (PTR
) & internal_a
, (PTR
) buff
);
3922 amount
= bfd_write ((PTR
) buff
, 1, bfd_coff_aoutsz (abfd
), abfd
);
3926 if (amount
!= bfd_coff_aoutsz (abfd
))
3935 /* XCOFF seems to always write at least a small a.out header. */
3936 coff_swap_aouthdr_out (abfd
, (PTR
) &internal_a
, (PTR
) &buff
);
3937 if (xcoff_data (abfd
)->full_aouthdr
)
3938 size
= bfd_coff_aoutsz (abfd
);
3940 size
= SMALL_AOUTSZ
;
3941 if (bfd_write ((PTR
) &buff
, 1, size
, abfd
) != size
)
3950 coff_set_section_contents (abfd
, section
, location
, offset
, count
)
3955 bfd_size_type count
;
3957 if (abfd
->output_has_begun
== false) /* set by bfd.c handler */
3959 if (! coff_compute_section_file_positions (abfd
))
3963 #if defined(_LIB) && !defined(TARG_AUX)
3965 /* The physical address field of a .lib section is used to hold the
3966 number of shared libraries in the section. This code counts the
3967 number of sections being written, and increments the lma field
3970 I have found no documentation on the contents of this section.
3971 Experimentation indicates that the section contains zero or more
3972 records, each of which has the following structure:
3974 - a (four byte) word holding the length of this record, in words,
3975 - a word that always seems to be set to "2",
3976 - the path to a shared library, null-terminated and then padded
3977 to a whole word boundary.
3979 bfd_assert calls have been added to alert if an attempt is made
3980 to write a section which doesn't follow these assumptions. The
3981 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
3982 <robertl@arnet.com> (Thanks!).
3984 Gvran Uddeborg <gvran@uddeborg.pp.se> */
3986 if (strcmp (section
->name
, _LIB
) == 0)
3988 bfd_byte
*rec
, *recend
;
3990 rec
= (bfd_byte
*) location
;
3991 recend
= rec
+ count
;
3992 while (rec
< recend
)
3995 rec
+= bfd_get_32 (abfd
, rec
) * 4;
3998 BFD_ASSERT (rec
== recend
);
4003 /* Don't write out bss sections - one way to do this is to
4004 see if the filepos has not been set. */
4005 if (section
->filepos
== 0)
4008 if (bfd_seek (abfd
, (file_ptr
) (section
->filepos
+ offset
), SEEK_SET
) != 0)
4013 return (bfd_write (location
, 1, count
, abfd
) == count
) ? true : false;
4019 coff_close_and_cleanup (abfd
)
4022 if (!bfd_read_p (abfd
))
4023 switch (abfd
->format
)
4026 if (!_bfd_write_archive_contents (abfd
))
4030 if (!coff_write_object_contents (abfd
))
4034 bfd_set_error (bfd_error_invalid_operation
);
4038 /* We depend on bfd_close to free all the memory on the objalloc. */
4045 buy_and_read (abfd
, where
, seek_direction
, size
)
4051 PTR area
= (PTR
) bfd_alloc (abfd
, size
);
4054 if (bfd_seek (abfd
, where
, seek_direction
) != 0
4055 || bfd_read (area
, 1, size
, abfd
) != size
)
4058 } /* buy_and_read() */
4064 Creating the linenumber table is done by reading in the entire
4065 coff linenumber table, and creating another table for internal use.
4067 A coff linenumber table is structured so that each function
4068 is marked as having a line number of 0. Each line within the
4069 function is an offset from the first line in the function. The
4070 base of the line number information for the table is stored in
4071 the symbol associated with the function.
4073 Note: The PE format uses line number 0 for a flag indicating a
4076 The information is copied from the external to the internal
4077 table, and each symbol which marks a function is marked by
4080 How does this work ?
4085 coff_slurp_line_table (abfd
, asect
)
4089 LINENO
*native_lineno
;
4090 alent
*lineno_cache
;
4092 BFD_ASSERT (asect
->lineno
== (alent
*) NULL
);
4094 native_lineno
= (LINENO
*) buy_and_read (abfd
,
4095 asect
->line_filepos
,
4097 (size_t) (bfd_coff_linesz (abfd
) *
4098 asect
->lineno_count
));
4100 (alent
*) bfd_alloc (abfd
, (size_t) ((asect
->lineno_count
+ 1) * sizeof (alent
)));
4101 if (lineno_cache
== NULL
)
4105 unsigned int counter
= 0;
4106 alent
*cache_ptr
= lineno_cache
;
4107 LINENO
*src
= native_lineno
;
4109 while (counter
< asect
->lineno_count
)
4111 struct internal_lineno dst
;
4112 bfd_coff_swap_lineno_in (abfd
, src
, &dst
);
4113 cache_ptr
->line_number
= dst
.l_lnno
;
4115 if (cache_ptr
->line_number
== 0)
4119 coff_symbol_type
*sym
;
4122 symndx
= dst
.l_addr
.l_symndx
;
4124 || (unsigned long) symndx
>= obj_raw_syment_count (abfd
))
4126 (*_bfd_error_handler
)
4127 (_("%s: warning: illegal symbol index %ld in line numbers"),
4128 bfd_get_filename (abfd
), dst
.l_addr
.l_symndx
);
4132 /* FIXME: We should not be casting between ints and
4133 pointers like this. */
4134 sym
= ((coff_symbol_type
*)
4135 ((symndx
+ obj_raw_syments (abfd
))
4136 ->u
.syment
._n
._n_n
._n_zeroes
));
4137 cache_ptr
->u
.sym
= (asymbol
*) sym
;
4138 if (sym
->lineno
!= NULL
&& ! warned
)
4140 (*_bfd_error_handler
)
4141 (_("%s: warning: duplicate line number information for `%s'"),
4142 bfd_get_filename (abfd
),
4143 bfd_asymbol_name (&sym
->symbol
));
4145 sym
->lineno
= cache_ptr
;
4149 cache_ptr
->u
.offset
= dst
.l_addr
.l_paddr
4150 - bfd_section_vma (abfd
, asect
);
4151 } /* If no linenumber expect a symbol index */
4157 cache_ptr
->line_number
= 0;
4160 asect
->lineno
= lineno_cache
;
4161 /* FIXME, free native_lineno here, or use alloca or something. */
4165 /* Slurp in the symbol table, converting it to generic form. Note
4166 that if coff_relocate_section is defined, the linker will read
4167 symbols via coff_link_add_symbols, rather than via this routine. */
4170 coff_slurp_symbol_table (abfd
)
4173 combined_entry_type
*native_symbols
;
4174 coff_symbol_type
*cached_area
;
4175 unsigned int *table_ptr
;
4177 unsigned int number_of_symbols
= 0;
4179 if (obj_symbols (abfd
))
4182 /* Read in the symbol table */
4183 if ((native_symbols
= coff_get_normalized_symtab (abfd
)) == NULL
)
4188 /* Allocate enough room for all the symbols in cached form */
4189 cached_area
= ((coff_symbol_type
*)
4191 (obj_raw_syment_count (abfd
)
4192 * sizeof (coff_symbol_type
))));
4194 if (cached_area
== NULL
)
4196 table_ptr
= ((unsigned int *)
4198 (obj_raw_syment_count (abfd
)
4199 * sizeof (unsigned int))));
4201 if (table_ptr
== NULL
)
4205 coff_symbol_type
*dst
= cached_area
;
4206 unsigned int last_native_index
= obj_raw_syment_count (abfd
);
4207 unsigned int this_index
= 0;
4208 while (this_index
< last_native_index
)
4210 combined_entry_type
*src
= native_symbols
+ this_index
;
4211 table_ptr
[this_index
] = number_of_symbols
;
4212 dst
->symbol
.the_bfd
= abfd
;
4214 dst
->symbol
.name
= (char *) (src
->u
.syment
._n
._n_n
._n_offset
);
4215 /* We use the native name field to point to the cached field. */
4216 src
->u
.syment
._n
._n_n
._n_zeroes
= (long) dst
;
4217 dst
->symbol
.section
= coff_section_from_bfd_index (abfd
,
4218 src
->u
.syment
.n_scnum
);
4219 dst
->symbol
.flags
= 0;
4220 dst
->done_lineno
= false;
4222 switch (src
->u
.syment
.n_sclass
)
4227 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
4228 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
4229 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4231 /* Fall through to next case */
4239 case C_THUMBEXTFUNC
:
4245 case C_SYSTEM
: /* System Wide variable */
4248 /* In PE, 0x68 (104) denotes a section symbol */
4250 /* In PE, 0x69 (105) denotes a weak external symbol. */
4253 switch (coff_classify_symbol (abfd
, &src
->u
.syment
))
4255 case COFF_SYMBOL_GLOBAL
:
4256 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
4257 #if defined COFF_WITH_PE
4258 /* PE sets the symbol to a value relative to the
4259 start of the section. */
4260 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4262 dst
->symbol
.value
= (src
->u
.syment
.n_value
4263 - dst
->symbol
.section
->vma
);
4265 if (ISFCN ((src
->u
.syment
.n_type
)))
4267 /* A function ext does not go at the end of a
4269 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4273 case COFF_SYMBOL_COMMON
:
4274 dst
->symbol
.section
= bfd_com_section_ptr
;
4275 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4278 case COFF_SYMBOL_UNDEFINED
:
4279 dst
->symbol
.section
= bfd_und_section_ptr
;
4280 dst
->symbol
.value
= 0;
4283 case COFF_SYMBOL_PE_SECTION
:
4284 dst
->symbol
.flags
|= BSF_EXPORT
| BSF_SECTION_SYM
;
4285 dst
->symbol
.value
= 0;
4288 case COFF_SYMBOL_LOCAL
:
4289 dst
->symbol
.flags
= BSF_LOCAL
;
4290 #if defined COFF_WITH_PE
4291 /* PE sets the symbol to a value relative to the
4292 start of the section. */
4293 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4295 dst
->symbol
.value
= (src
->u
.syment
.n_value
4296 - dst
->symbol
.section
->vma
);
4298 if (ISFCN ((src
->u
.syment
.n_type
)))
4299 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4304 /* A symbol with a csect entry should not go at the end. */
4305 if (src
->u
.syment
.n_numaux
> 0)
4306 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
4310 if (src
->u
.syment
.n_sclass
== C_NT_WEAK
)
4311 dst
->symbol
.flags
= BSF_WEAK
;
4312 if (src
->u
.syment
.n_sclass
== C_SECTION
4313 && src
->u
.syment
.n_scnum
> 0)
4315 dst
->symbol
.flags
= BSF_LOCAL
;
4319 if (src
->u
.syment
.n_sclass
== C_WEAKEXT
)
4320 dst
->symbol
.flags
= BSF_WEAK
;
4324 case C_STAT
: /* static */
4326 case C_LEAFSTAT
: /* static leaf procedure */
4329 case C_THUMBSTAT
: /* Thumb static */
4330 case C_THUMBLABEL
: /* Thumb label */
4331 case C_THUMBSTATFUNC
:/* Thumb static function */
4333 case C_LABEL
: /* label */
4334 if (src
->u
.syment
.n_scnum
== N_DEBUG
)
4335 dst
->symbol
.flags
= BSF_DEBUGGING
;
4337 dst
->symbol
.flags
= BSF_LOCAL
;
4339 /* Base the value as an index from the base of the
4340 section, if there is one. */
4341 if (dst
->symbol
.section
)
4343 #if defined COFF_WITH_PE
4344 /* PE sets the symbol to a value relative to the
4345 start of the section. */
4346 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4348 dst
->symbol
.value
= (src
->u
.syment
.n_value
4349 - dst
->symbol
.section
->vma
);
4353 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4356 case C_MOS
: /* member of structure */
4357 case C_EOS
: /* end of structure */
4358 #ifdef NOTDEF /* C_AUTOARG has the same value */
4360 case C_GLBLREG
: /* A29k-specific storage class */
4363 case C_REGPARM
: /* register parameter */
4364 case C_REG
: /* register variable */
4365 /* C_AUTOARG conflictes with TI COFF C_UEXT */
4366 #if !defined (TIC80COFF) && !defined (TICOFF)
4368 case C_AUTOARG
: /* 960-specific storage class */
4371 case C_TPDEF
: /* type definition */
4373 case C_AUTO
: /* automatic variable */
4374 case C_FIELD
: /* bit field */
4375 case C_ENTAG
: /* enumeration tag */
4376 case C_MOE
: /* member of enumeration */
4377 case C_MOU
: /* member of union */
4378 case C_UNTAG
: /* union tag */
4379 dst
->symbol
.flags
= BSF_DEBUGGING
;
4380 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4383 case C_FILE
: /* file name */
4384 case C_STRTAG
: /* structure tag */
4399 dst
->symbol
.flags
= BSF_DEBUGGING
;
4400 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4404 case C_BINCL
: /* beginning of include file */
4405 case C_EINCL
: /* ending of include file */
4406 /* The value is actually a pointer into the line numbers
4407 of the file. We locate the line number entry, and
4408 set the section to the section which contains it, and
4409 the value to the index in that section. */
4413 dst
->symbol
.flags
= BSF_DEBUGGING
;
4414 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4415 if (sec
->line_filepos
<= (file_ptr
) src
->u
.syment
.n_value
4416 && ((file_ptr
) (sec
->line_filepos
4417 + sec
->lineno_count
* bfd_coff_linesz (abfd
))
4418 > (file_ptr
) src
->u
.syment
.n_value
))
4421 dst
->symbol
.value
= 0;
4424 dst
->symbol
.section
= sec
;
4425 dst
->symbol
.value
= ((src
->u
.syment
.n_value
4426 - sec
->line_filepos
)
4427 / bfd_coff_linesz (abfd
));
4434 dst
->symbol
.flags
= BSF_DEBUGGING
;
4436 /* The value is actually a symbol index. Save a pointer
4437 to the symbol instead of the index. FIXME: This
4438 should use a union. */
4439 src
->u
.syment
.n_value
=
4440 (long) (native_symbols
+ src
->u
.syment
.n_value
);
4441 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4446 case C_BLOCK
: /* ".bb" or ".eb" */
4447 case C_FCN
: /* ".bf" or ".ef" (or PE ".lf") */
4448 case C_EFCN
: /* physical end of function */
4449 #if defined COFF_WITH_PE
4450 /* PE sets the symbol to a value relative to the start
4452 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4453 if (strcmp (dst
->symbol
.name
, ".bf") != 0)
4455 /* PE uses funny values for .ef and .lf; don't
4457 dst
->symbol
.flags
= BSF_DEBUGGING
;
4460 dst
->symbol
.flags
= BSF_DEBUGGING
| BSF_DEBUGGING_RELOC
;
4462 /* Base the value as an index from the base of the
4464 dst
->symbol
.flags
= BSF_LOCAL
;
4465 dst
->symbol
.value
= (src
->u
.syment
.n_value
4466 - dst
->symbol
.section
->vma
);
4470 case C_STATLAB
: /* Static load time label */
4471 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4472 dst
->symbol
.flags
= BSF_GLOBAL
;
4476 /* PE DLLs sometimes have zeroed out symbols for some
4477 reason. Just ignore them without a warning. */
4478 if (src
->u
.syment
.n_type
== 0
4479 && src
->u
.syment
.n_value
== 0
4480 && src
->u
.syment
.n_scnum
== 0)
4483 case C_EXTDEF
: /* external definition */
4484 case C_ULABEL
: /* undefined label */
4485 case C_USTATIC
: /* undefined static */
4486 #ifndef COFF_WITH_PE
4487 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4488 class to represent a section symbol */
4489 case C_LINE
: /* line # reformatted as symbol table entry */
4490 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4491 case C_ALIAS
: /* duplicate tag */
4493 /* New storage classes for TI COFF */
4494 #if defined(TIC80COFF) || defined(TICOFF)
4495 case C_UEXT
: /* Tentative external definition */
4497 case C_EXTLAB
: /* External load time label */
4498 case C_HIDDEN
: /* ext symbol in dmert public lib */
4500 (*_bfd_error_handler
)
4501 (_("%s: Unrecognized storage class %d for %s symbol `%s'"),
4502 bfd_get_filename (abfd
), src
->u
.syment
.n_sclass
,
4503 dst
->symbol
.section
->name
, dst
->symbol
.name
);
4504 dst
->symbol
.flags
= BSF_DEBUGGING
;
4505 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4509 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4513 dst
->symbol
.udata
.i
= 0;
4514 dst
->lineno
= (alent
*) NULL
;
4515 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
4517 number_of_symbols
++;
4518 } /* walk the native symtab */
4519 } /* bfdize the native symtab */
4521 obj_symbols (abfd
) = cached_area
;
4522 obj_raw_syments (abfd
) = native_symbols
;
4524 bfd_get_symcount (abfd
) = number_of_symbols
;
4525 obj_convert (abfd
) = table_ptr
;
4526 /* Slurp the line tables for each section too */
4532 coff_slurp_line_table (abfd
, p
);
4537 } /* coff_slurp_symbol_table() */
4539 /* Classify a COFF symbol. A couple of targets have globally visible
4540 symbols which are not class C_EXT, and this handles those. It also
4541 recognizes some special PE cases. */
4543 static enum coff_symbol_classification
4544 coff_classify_symbol (abfd
, syment
)
4546 struct internal_syment
*syment
;
4548 /* FIXME: This partially duplicates the switch in
4549 coff_slurp_symbol_table. */
4550 switch (syment
->n_sclass
)
4559 case C_THUMBEXTFUNC
:
4567 if (syment
->n_scnum
== 0)
4569 if (syment
->n_value
== 0)
4570 return COFF_SYMBOL_UNDEFINED
;
4572 return COFF_SYMBOL_COMMON
;
4574 return COFF_SYMBOL_GLOBAL
;
4581 if (syment
->n_sclass
== C_STAT
)
4583 if (syment
->n_scnum
== 0)
4585 /* The Microsoft compiler sometimes generates these if a
4586 small static function is inlined every time it is used.
4587 The function is discarded, but the symbol table entry
4589 return COFF_SYMBOL_LOCAL
;
4592 #ifdef STRICT_PE_FORMAT
4593 /* This is correct for Microsoft generated objects, but it
4594 breaks gas generated objects. */
4596 if (syment
->n_value
== 0)
4599 char buf
[SYMNMLEN
+ 1];
4601 sec
= coff_section_from_bfd_index (abfd
, syment
->n_scnum
);
4603 && (strcmp (bfd_get_section_name (abfd
, sec
),
4604 _bfd_coff_internal_syment_name (abfd
, syment
, buf
))
4606 return COFF_SYMBOL_PE_SECTION
;
4610 return COFF_SYMBOL_LOCAL
;
4613 if (syment
->n_sclass
== C_SECTION
)
4615 /* In some cases in a DLL generated by the Microsoft linker, the
4616 n_value field will contain garbage. FIXME: This should
4617 probably be handled by the swapping function instead. */
4618 syment
->n_value
= 0;
4619 if (syment
->n_scnum
== 0)
4620 return COFF_SYMBOL_UNDEFINED
;
4621 return COFF_SYMBOL_PE_SECTION
;
4623 #endif /* COFF_WITH_PE */
4625 /* If it is not a global symbol, we presume it is a local symbol. */
4627 if (syment
->n_scnum
== 0)
4629 char buf
[SYMNMLEN
+ 1];
4631 (*_bfd_error_handler
)
4632 (_("warning: %s: local symbol `%s' has no section"),
4633 bfd_get_filename (abfd
),
4634 _bfd_coff_internal_syment_name (abfd
, syment
, buf
));
4637 return COFF_SYMBOL_LOCAL
;
4644 Coff relocations are easily transformed into the internal BFD form
4647 Reading a coff relocation table is done in the following stages:
4649 o Read the entire coff relocation table into memory.
4651 o Process each relocation in turn; first swap it from the
4652 external to the internal form.
4654 o Turn the symbol referenced in the relocation's symbol index
4655 into a pointer into the canonical symbol table.
4656 This table is the same as the one returned by a call to
4657 @code{bfd_canonicalize_symtab}. The back end will call that
4658 routine and save the result if a canonicalization hasn't been done.
4660 o The reloc index is turned into a pointer to a howto
4661 structure, in a back end specific way. For instance, the 386
4662 and 960 use the @code{r_type} to directly produce an index
4663 into a howto table vector; the 88k subtracts a number from the
4664 @code{r_type} field and creates an addend field.
4670 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
4672 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
4673 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
4674 coffsym = (obj_symbols (abfd) \
4675 + (cache_ptr->sym_ptr_ptr - symbols)); \
4677 coffsym = coff_symbol_from (abfd, ptr); \
4678 if (coffsym != (coff_symbol_type *) NULL \
4679 && coffsym->native->u.syment.n_scnum == 0) \
4680 cache_ptr->addend = 0; \
4681 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
4682 && ptr->section != (asection *) NULL) \
4683 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
4685 cache_ptr->addend = 0; \
4690 coff_slurp_reloc_table (abfd
, asect
, symbols
)
4695 RELOC
*native_relocs
;
4696 arelent
*reloc_cache
;
4701 if (asect
->relocation
)
4703 if (asect
->reloc_count
== 0)
4705 if (asect
->flags
& SEC_CONSTRUCTOR
)
4707 if (!coff_slurp_symbol_table (abfd
))
4710 (RELOC
*) buy_and_read (abfd
,
4713 (size_t) (bfd_coff_relsz (abfd
) *
4714 asect
->reloc_count
));
4715 reloc_cache
= (arelent
*)
4716 bfd_alloc (abfd
, (size_t) (asect
->reloc_count
* sizeof (arelent
)));
4718 if (reloc_cache
== NULL
)
4722 for (idx
= 0; idx
< asect
->reloc_count
; idx
++)
4724 struct internal_reloc dst
;
4725 struct external_reloc
*src
;
4726 #ifndef RELOC_PROCESSING
4730 cache_ptr
= reloc_cache
+ idx
;
4731 src
= native_relocs
+ idx
;
4733 coff_swap_reloc_in (abfd
, src
, &dst
);
4735 #ifdef RELOC_PROCESSING
4736 RELOC_PROCESSING (cache_ptr
, &dst
, symbols
, abfd
, asect
);
4738 cache_ptr
->address
= dst
.r_vaddr
;
4740 if (dst
.r_symndx
!= -1)
4742 if (dst
.r_symndx
< 0 || dst
.r_symndx
>= obj_conv_table_size (abfd
))
4744 (*_bfd_error_handler
)
4745 (_("%s: warning: illegal symbol index %ld in relocs"),
4746 bfd_get_filename (abfd
), dst
.r_symndx
);
4747 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
4752 cache_ptr
->sym_ptr_ptr
= (symbols
4753 + obj_convert (abfd
)[dst
.r_symndx
]);
4754 ptr
= *(cache_ptr
->sym_ptr_ptr
);
4759 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
4763 /* The symbols definitions that we have read in have been
4764 relocated as if their sections started at 0. But the offsets
4765 refering to the symbols in the raw data have not been
4766 modified, so we have to have a negative addend to compensate.
4768 Note that symbols which used to be common must be left alone */
4770 /* Calculate any reloc addend by looking at the symbol */
4771 CALC_ADDEND (abfd
, ptr
, dst
, cache_ptr
);
4773 cache_ptr
->address
-= asect
->vma
;
4774 /* !! cache_ptr->section = (asection *) NULL;*/
4776 /* Fill in the cache_ptr->howto field from dst.r_type */
4777 RTYPE2HOWTO (cache_ptr
, &dst
);
4778 #endif /* RELOC_PROCESSING */
4780 if (cache_ptr
->howto
== NULL
)
4782 (*_bfd_error_handler
)
4783 (_("%s: illegal relocation type %d at address 0x%lx"),
4784 bfd_get_filename (abfd
), dst
.r_type
, (long) dst
.r_vaddr
);
4785 bfd_set_error (bfd_error_bad_value
);
4790 asect
->relocation
= reloc_cache
;
4794 #ifndef coff_rtype_to_howto
4797 /* Get the howto structure for a reloc. This is only used if the file
4798 including this one defines coff_relocate_section to be
4799 _bfd_coff_generic_relocate_section, so it is OK if it does not
4800 always work. It is the responsibility of the including file to
4801 make sure it is reasonable if it is needed. */
4803 static reloc_howto_type
*coff_rtype_to_howto
4804 PARAMS ((bfd
*, asection
*, struct internal_reloc
*,
4805 struct coff_link_hash_entry
*, struct internal_syment
*,
4809 static reloc_howto_type
*
4810 coff_rtype_to_howto (abfd
, sec
, rel
, h
, sym
, addendp
)
4811 bfd
*abfd ATTRIBUTE_UNUSED
;
4812 asection
*sec ATTRIBUTE_UNUSED
;
4813 struct internal_reloc
*rel
;
4814 struct coff_link_hash_entry
*h ATTRIBUTE_UNUSED
;
4815 struct internal_syment
*sym ATTRIBUTE_UNUSED
;
4816 bfd_vma
*addendp ATTRIBUTE_UNUSED
;
4820 RTYPE2HOWTO (&genrel
, rel
);
4821 return genrel
.howto
;
4824 #else /* ! defined (RTYPE2HOWTO) */
4826 #define coff_rtype_to_howto NULL
4828 #endif /* ! defined (RTYPE2HOWTO) */
4829 #endif /* ! defined (coff_rtype_to_howto) */
4831 /* This is stupid. This function should be a boolean predicate. */
4833 coff_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
4839 arelent
*tblptr
= section
->relocation
;
4840 unsigned int count
= 0;
4843 if (section
->flags
& SEC_CONSTRUCTOR
)
4845 /* this section has relocs made up by us, they are not in the
4846 file, so take them out of their chain and place them into
4847 the data area provided */
4848 arelent_chain
*chain
= section
->constructor_chain
;
4849 for (count
= 0; count
< section
->reloc_count
; count
++)
4851 *relptr
++ = &chain
->relent
;
4852 chain
= chain
->next
;
4858 if (! coff_slurp_reloc_table (abfd
, section
, symbols
))
4861 tblptr
= section
->relocation
;
4863 for (; count
++ < section
->reloc_count
;)
4864 *relptr
++ = tblptr
++;
4869 return section
->reloc_count
;
4874 coff_sym_filepos (abfd
)
4877 return obj_sym_filepos (abfd
);
4881 #ifndef coff_reloc16_estimate
4882 #define coff_reloc16_estimate dummy_reloc16_estimate
4884 static int dummy_reloc16_estimate
4885 PARAMS ((bfd
*, asection
*, arelent
*, unsigned int,
4886 struct bfd_link_info
*));
4889 dummy_reloc16_estimate (abfd
, input_section
, reloc
, shrink
, link_info
)
4890 bfd
*abfd ATTRIBUTE_UNUSED
;
4891 asection
*input_section ATTRIBUTE_UNUSED
;
4892 arelent
*reloc ATTRIBUTE_UNUSED
;
4893 unsigned int shrink ATTRIBUTE_UNUSED
;
4894 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
4902 #ifndef coff_reloc16_extra_cases
4904 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
4906 /* This works even if abort is not declared in any header file. */
4908 static void dummy_reloc16_extra_cases
4909 PARAMS ((bfd
*, struct bfd_link_info
*, struct bfd_link_order
*, arelent
*,
4910 bfd_byte
*, unsigned int *, unsigned int *));
4913 dummy_reloc16_extra_cases (abfd
, link_info
, link_order
, reloc
, data
, src_ptr
,
4915 bfd
*abfd ATTRIBUTE_UNUSED
;
4916 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
4917 struct bfd_link_order
*link_order ATTRIBUTE_UNUSED
;
4918 arelent
*reloc ATTRIBUTE_UNUSED
;
4919 bfd_byte
*data ATTRIBUTE_UNUSED
;
4920 unsigned int *src_ptr ATTRIBUTE_UNUSED
;
4921 unsigned int *dst_ptr ATTRIBUTE_UNUSED
;
4927 /* If coff_relocate_section is defined, we can use the optimized COFF
4928 backend linker. Otherwise we must continue to use the old linker. */
4929 #ifdef coff_relocate_section
4930 #ifndef coff_bfd_link_hash_table_create
4931 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
4933 #ifndef coff_bfd_link_add_symbols
4934 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
4936 #ifndef coff_bfd_final_link
4937 #define coff_bfd_final_link _bfd_coff_final_link
4939 #else /* ! defined (coff_relocate_section) */
4940 #define coff_relocate_section NULL
4941 #ifndef coff_bfd_link_hash_table_create
4942 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
4944 #ifndef coff_bfd_link_add_symbols
4945 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
4947 #define coff_bfd_final_link _bfd_generic_final_link
4948 #endif /* ! defined (coff_relocate_section) */
4950 #define coff_bfd_link_split_section _bfd_generic_link_split_section
4952 #ifndef coff_start_final_link
4953 #define coff_start_final_link NULL
4956 #ifndef coff_adjust_symndx
4957 #define coff_adjust_symndx NULL
4960 #ifndef coff_link_add_one_symbol
4961 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
4964 #ifndef coff_link_output_has_begun
4966 static boolean coff_link_output_has_begun
4967 PARAMS ((bfd
*, struct coff_final_link_info
*));
4970 coff_link_output_has_begun (abfd
, info
)
4972 struct coff_final_link_info
* info ATTRIBUTE_UNUSED
;
4974 return abfd
->output_has_begun
;
4978 #ifndef coff_final_link_postscript
4980 static boolean coff_final_link_postscript
4981 PARAMS ((bfd
*, struct coff_final_link_info
*));
4984 coff_final_link_postscript (abfd
, pfinfo
)
4985 bfd
* abfd ATTRIBUTE_UNUSED
;
4986 struct coff_final_link_info
* pfinfo ATTRIBUTE_UNUSED
;
4992 #ifndef coff_SWAP_aux_in
4993 #define coff_SWAP_aux_in coff_swap_aux_in
4995 #ifndef coff_SWAP_sym_in
4996 #define coff_SWAP_sym_in coff_swap_sym_in
4998 #ifndef coff_SWAP_lineno_in
4999 #define coff_SWAP_lineno_in coff_swap_lineno_in
5001 #ifndef coff_SWAP_aux_out
5002 #define coff_SWAP_aux_out coff_swap_aux_out
5004 #ifndef coff_SWAP_sym_out
5005 #define coff_SWAP_sym_out coff_swap_sym_out
5007 #ifndef coff_SWAP_lineno_out
5008 #define coff_SWAP_lineno_out coff_swap_lineno_out
5010 #ifndef coff_SWAP_reloc_out
5011 #define coff_SWAP_reloc_out coff_swap_reloc_out
5013 #ifndef coff_SWAP_filehdr_out
5014 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5016 #ifndef coff_SWAP_aouthdr_out
5017 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5019 #ifndef coff_SWAP_scnhdr_out
5020 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5022 #ifndef coff_SWAP_reloc_in
5023 #define coff_SWAP_reloc_in coff_swap_reloc_in
5025 #ifndef coff_SWAP_filehdr_in
5026 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5028 #ifndef coff_SWAP_aouthdr_in
5029 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5031 #ifndef coff_SWAP_scnhdr_in
5032 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5035 static const bfd_coff_backend_data bfd_coff_std_swap_table
=
5037 coff_SWAP_aux_in
, coff_SWAP_sym_in
, coff_SWAP_lineno_in
,
5038 coff_SWAP_aux_out
, coff_SWAP_sym_out
,
5039 coff_SWAP_lineno_out
, coff_SWAP_reloc_out
,
5040 coff_SWAP_filehdr_out
, coff_SWAP_aouthdr_out
,
5041 coff_SWAP_scnhdr_out
,
5042 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
, FILNMLEN
,
5043 #ifdef COFF_LONG_FILENAMES
5048 #ifdef COFF_LONG_SECTION_NAMES
5053 COFF_DEFAULT_SECTION_ALIGNMENT_POWER
,
5054 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5059 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5064 coff_SWAP_filehdr_in
, coff_SWAP_aouthdr_in
, coff_SWAP_scnhdr_in
,
5065 coff_SWAP_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
5066 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
5067 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
5068 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
5069 coff_classify_symbol
, coff_compute_section_file_positions
,
5070 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
5071 coff_adjust_symndx
, coff_link_add_one_symbol
,
5072 coff_link_output_has_begun
, coff_final_link_postscript
5075 #ifndef coff_close_and_cleanup
5076 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5079 #ifndef coff_bfd_free_cached_info
5080 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5083 #ifndef coff_get_section_contents
5084 #define coff_get_section_contents _bfd_generic_get_section_contents
5087 #ifndef coff_bfd_copy_private_symbol_data
5088 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5091 #ifndef coff_bfd_copy_private_section_data
5092 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5095 #ifndef coff_bfd_copy_private_bfd_data
5096 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5099 #ifndef coff_bfd_merge_private_bfd_data
5100 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5103 #ifndef coff_bfd_set_private_flags
5104 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5107 #ifndef coff_bfd_print_private_bfd_data
5108 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5111 #ifndef coff_bfd_is_local_label_name
5112 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5115 #ifndef coff_read_minisymbols
5116 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5119 #ifndef coff_minisymbol_to_symbol
5120 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5123 /* The reloc lookup routine must be supplied by each individual COFF
5125 #ifndef coff_bfd_reloc_type_lookup
5126 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5129 #ifndef coff_bfd_get_relocated_section_contents
5130 #define coff_bfd_get_relocated_section_contents \
5131 bfd_generic_get_relocated_section_contents
5134 #ifndef coff_bfd_relax_section
5135 #define coff_bfd_relax_section bfd_generic_relax_section
5138 #ifndef coff_bfd_gc_sections
5139 #define coff_bfd_gc_sections bfd_generic_gc_sections
5142 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5143 const bfd_target VAR = \
5146 bfd_target_coff_flavour, \
5147 BFD_ENDIAN_BIG, /* data byte order is big */ \
5148 BFD_ENDIAN_BIG, /* header byte order is big */ \
5149 /* object flags */ \
5150 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5151 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5152 /* section flags */ \
5153 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5154 UNDER, /* leading symbol underscore */ \
5155 '/', /* ar_pad_char */ \
5156 15, /* ar_max_namelen */ \
5158 /* Data conversion functions. */ \
5159 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5160 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5161 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5163 /* Header conversion functions. */ \
5164 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5165 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5166 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5168 /* bfd_check_format */ \
5169 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5170 _bfd_dummy_target }, \
5171 /* bfd_set_format */ \
5172 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5173 /* bfd_write_contents */ \
5174 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5177 BFD_JUMP_TABLE_GENERIC (coff), \
5178 BFD_JUMP_TABLE_COPY (coff), \
5179 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5180 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5181 BFD_JUMP_TABLE_SYMBOLS (coff), \
5182 BFD_JUMP_TABLE_RELOCS (coff), \
5183 BFD_JUMP_TABLE_WRITE (coff), \
5184 BFD_JUMP_TABLE_LINK (coff), \
5185 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5192 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5193 const bfd_target VAR = \
5196 bfd_target_coff_flavour, \
5197 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5198 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5199 /* object flags */ \
5200 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5201 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5202 /* section flags */ \
5203 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5204 UNDER, /* leading symbol underscore */ \
5205 '/', /* ar_pad_char */ \
5206 15, /* ar_max_namelen */ \
5208 /* Data conversion functions. */ \
5209 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5210 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5211 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5212 /* Header conversion functions. */ \
5213 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5214 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5215 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5216 /* bfd_check_format */ \
5217 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5218 _bfd_dummy_target }, \
5219 /* bfd_set_format */ \
5220 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5221 /* bfd_write_contents */ \
5222 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5225 BFD_JUMP_TABLE_GENERIC (coff), \
5226 BFD_JUMP_TABLE_COPY (coff), \
5227 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5228 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5229 BFD_JUMP_TABLE_SYMBOLS (coff), \
5230 BFD_JUMP_TABLE_RELOCS (coff), \
5231 BFD_JUMP_TABLE_WRITE (coff), \
5232 BFD_JUMP_TABLE_LINK (coff), \
5233 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \