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
;
1611 /* check for extended relocs */
1612 if (hdr
->s_flags
& IMAGE_SCN_LNK_NRELOC_OVFL
)
1614 struct external_reloc dst
;
1615 struct internal_reloc n
;
1616 int oldpos
= bfd_tell (abfd
);
1617 bfd_seek (abfd
, hdr
->s_relptr
, 0);
1618 if (bfd_read ((PTR
) & dst
, 1, bfd_coff_relsz (abfd
), abfd
)
1619 != bfd_coff_relsz (abfd
))
1622 coff_swap_reloc_in (abfd
, &dst
, &n
);
1623 bfd_seek (abfd
, oldpos
, 0);
1624 section
->reloc_count
=
1625 hdr
->s_nreloc
= n
.r_vaddr
;
1629 #undef ELIFALIGN_SET
1631 #else /* ! COFF_WITH_PE */
1634 /* We grossly abuse this function to handle XCOFF overflow headers.
1635 When we see one, we correct the reloc and line number counts in the
1636 real header, and remove the section we just created. */
1638 static void coff_set_alignment_hook
PARAMS ((bfd
*, asection
*, PTR
));
1641 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1646 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1650 if ((hdr
->s_flags
& STYP_OVRFLO
) == 0)
1653 real_sec
= coff_section_from_bfd_index (abfd
, hdr
->s_nreloc
);
1654 if (real_sec
== NULL
)
1657 real_sec
->reloc_count
= hdr
->s_paddr
;
1658 real_sec
->lineno_count
= hdr
->s_vaddr
;
1660 for (ps
= &abfd
->sections
; *ps
!= NULL
; ps
= &(*ps
)->next
)
1665 --abfd
->section_count
;
1671 #else /* ! RS6000COFF_C */
1673 #define coff_set_alignment_hook \
1674 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1676 #endif /* ! RS6000COFF_C */
1677 #endif /* ! COFF_WITH_PE */
1678 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1680 #ifndef coff_mkobject
1682 static boolean coff_mkobject
PARAMS ((bfd
*));
1685 coff_mkobject (abfd
)
1688 coff_data_type
*coff
;
1690 abfd
->tdata
.coff_obj_data
= (struct coff_tdata
*) bfd_zalloc (abfd
, sizeof (coff_data_type
));
1691 if (abfd
->tdata
.coff_obj_data
== 0)
1693 coff
= coff_data (abfd
);
1694 coff
->symbols
= (coff_symbol_type
*) NULL
;
1695 coff
->conversion_table
= (unsigned int *) NULL
;
1696 coff
->raw_syments
= (struct coff_ptr_struct
*) NULL
;
1697 coff
->relocbase
= 0;
1698 coff
->local_toc_sym_map
= 0;
1700 /* make_abs_section(abfd);*/
1706 /* Create the COFF backend specific information. */
1707 #ifndef coff_mkobject_hook
1709 coff_mkobject_hook (abfd
, filehdr
, aouthdr
)
1712 PTR aouthdr ATTRIBUTE_UNUSED
;
1714 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1715 coff_data_type
*coff
;
1717 if (coff_mkobject (abfd
) == false)
1720 coff
= coff_data (abfd
);
1722 coff
->sym_filepos
= internal_f
->f_symptr
;
1724 /* These members communicate important constants about the symbol
1725 table to GDB's symbol-reading code. These `constants'
1726 unfortunately vary among coff implementations... */
1727 coff
->local_n_btmask
= N_BTMASK
;
1728 coff
->local_n_btshft
= N_BTSHFT
;
1729 coff
->local_n_tmask
= N_TMASK
;
1730 coff
->local_n_tshift
= N_TSHIFT
;
1731 coff
->local_symesz
= bfd_coff_symesz (abfd
);
1732 coff
->local_auxesz
= bfd_coff_auxesz (abfd
);
1733 coff
->local_linesz
= bfd_coff_linesz (abfd
);
1735 coff
->timestamp
= internal_f
->f_timdat
;
1737 obj_raw_syment_count (abfd
) =
1738 obj_conv_table_size (abfd
) =
1739 internal_f
->f_nsyms
;
1742 if ((internal_f
->f_flags
& F_SHROBJ
) != 0)
1743 abfd
->flags
|= DYNAMIC
;
1744 if (aouthdr
!= NULL
&& internal_f
->f_opthdr
>= bfd_coff_aoutsz (abfd
))
1746 struct internal_aouthdr
*internal_a
=
1747 (struct internal_aouthdr
*) aouthdr
;
1748 struct xcoff_tdata
*xcoff
;
1750 xcoff
= xcoff_data (abfd
);
1751 # ifdef U803XTOCMAGIC
1752 xcoff
->xcoff64
= internal_f
->f_magic
== U803XTOCMAGIC
;
1756 xcoff
->full_aouthdr
= true;
1757 xcoff
->toc
= internal_a
->o_toc
;
1758 xcoff
->sntoc
= internal_a
->o_sntoc
;
1759 xcoff
->snentry
= internal_a
->o_snentry
;
1760 xcoff
->text_align_power
= internal_a
->o_algntext
;
1761 xcoff
->data_align_power
= internal_a
->o_algndata
;
1762 xcoff
->modtype
= internal_a
->o_modtype
;
1763 xcoff
->cputype
= internal_a
->o_cputype
;
1764 xcoff
->maxdata
= internal_a
->o_maxdata
;
1765 xcoff
->maxstack
= internal_a
->o_maxstack
;
1770 /* Set the flags field from the COFF header read in */
1771 if (! _bfd_coff_arm_set_private_flags (abfd
, internal_f
->f_flags
))
1776 /* FIXME: I'm not sure this is ever executed, since peicode.h
1777 defines coff_mkobject_hook. */
1778 if ((internal_f
->f_flags
& IMAGE_FILE_DEBUG_STRIPPED
) == 0)
1779 abfd
->flags
|= HAS_DEBUG
;
1786 /* Determine the machine architecture and type. FIXME: This is target
1787 dependent because the magic numbers are defined in the target
1788 dependent header files. But there is no particular need for this.
1789 If the magic numbers were moved to a separate file, this function
1790 would be target independent and would also be much more successful
1791 at linking together COFF files for different architectures. */
1794 coff_set_arch_mach_hook (abfd
, filehdr
)
1799 enum bfd_architecture arch
;
1800 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1803 switch (internal_f
->f_magic
)
1807 arch
= bfd_arch_powerpc
;
1808 machine
= 0; /* what does this mean? (krk) */
1814 case I386AIXMAGIC
: /* Danbury PS/2 AIX C Compiler */
1815 case LYNXCOFFMAGIC
: /* shadows the m68k Lynx number below, sigh */
1816 arch
= bfd_arch_i386
;
1822 arch
= bfd_arch_ia64
;
1826 #ifdef A29K_MAGIC_BIG
1827 case A29K_MAGIC_BIG
:
1828 case A29K_MAGIC_LITTLE
:
1829 arch
= bfd_arch_a29k
;
1837 arch
= bfd_arch_arm
;
1838 switch (internal_f
->f_flags
& F_ARM_ARCHITECTURE_MASK
)
1840 case F_ARM_2
: machine
= bfd_mach_arm_2
; break;
1841 case F_ARM_2a
: machine
= bfd_mach_arm_2a
; break;
1842 case F_ARM_3
: machine
= bfd_mach_arm_3
; break;
1844 case F_ARM_3M
: machine
= bfd_mach_arm_3M
; break;
1845 case F_ARM_4
: machine
= bfd_mach_arm_4
; break;
1846 case F_ARM_4T
: machine
= bfd_mach_arm_4T
; break;
1847 case F_ARM_5
: machine
= bfd_mach_arm_5
; break;
1854 #ifdef MC68KBCSMAGIC
1857 #ifdef APOLLOM68KMAGIC
1858 case APOLLOM68KMAGIC
:
1860 #ifdef LYNXCOFFMAGIC
1863 arch
= bfd_arch_m68k
;
1864 machine
= bfd_mach_m68020
;
1871 arch
= bfd_arch_m88k
;
1877 arch
= bfd_arch_z8k
;
1878 switch (internal_f
->f_flags
& F_MACHMASK
)
1881 machine
= bfd_mach_z8001
;
1884 machine
= bfd_mach_z8002
;
1893 arch
= bfd_arch_i860
;
1900 arch
= bfd_arch_i960
;
1901 switch (F_I960TYPE
& internal_f
->f_flags
)
1905 machine
= bfd_mach_i960_core
;
1908 machine
= bfd_mach_i960_kb_sb
;
1911 machine
= bfd_mach_i960_mc
;
1914 machine
= bfd_mach_i960_xa
;
1917 machine
= bfd_mach_i960_ca
;
1920 machine
= bfd_mach_i960_ka_sa
;
1923 machine
= bfd_mach_i960_jx
;
1926 machine
= bfd_mach_i960_hx
;
1944 if (xcoff_data (abfd
)->cputype
!= -1)
1945 cputype
= xcoff_data (abfd
)->cputype
& 0xff;
1948 /* We did not get a value from the a.out header. If the
1949 file has not been stripped, we may be able to get the
1950 architecture information from the first symbol, if it
1951 is a .file symbol. */
1952 if (obj_raw_syment_count (abfd
) == 0)
1957 struct internal_syment sym
;
1959 buf
= (bfd_byte
*) bfd_malloc (bfd_coff_symesz (abfd
));
1960 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1961 || (bfd_read (buf
, 1, bfd_coff_symesz (abfd
), abfd
)
1962 != bfd_coff_symesz (abfd
)))
1967 bfd_coff_swap_sym_in (abfd
, (PTR
) buf
, (PTR
) &sym
);
1968 if (sym
.n_sclass
== C_FILE
)
1969 cputype
= sym
.n_type
& 0xff;
1976 /* FIXME: We don't handle all cases here. */
1982 /* PowerPC Macs use the same magic numbers as RS/6000
1983 (because that's how they were bootstrapped originally),
1984 but they are always PowerPC architecture. */
1985 arch
= bfd_arch_powerpc
;
1986 machine
= bfd_mach_ppc
;
1989 arch
= bfd_arch_powerpc
;
1990 machine
= bfd_mach_ppc_620
;
1992 arch
= bfd_arch_rs6000
;
1993 machine
= bfd_mach_rs6k
;
1995 #endif /* POWERMAC */
1999 arch
= bfd_arch_powerpc
;
2000 machine
= bfd_mach_ppc_601
;
2002 case 2: /* 64 bit PowerPC */
2003 arch
= bfd_arch_powerpc
;
2004 machine
= bfd_mach_ppc_620
;
2007 arch
= bfd_arch_powerpc
;
2008 machine
= bfd_mach_ppc
;
2011 arch
= bfd_arch_rs6000
;
2012 machine
= bfd_mach_rs6k
;
2021 arch
= bfd_arch_we32k
;
2028 arch
= bfd_arch_h8300
;
2029 machine
= bfd_mach_h8300
;
2030 /* !! FIXME this probably isn't the right place for this */
2031 abfd
->flags
|= BFD_IS_RELAXABLE
;
2037 arch
= bfd_arch_h8300
;
2038 machine
= bfd_mach_h8300h
;
2039 /* !! FIXME this probably isn't the right place for this */
2040 abfd
->flags
|= BFD_IS_RELAXABLE
;
2046 arch
= bfd_arch_h8300
;
2047 machine
= bfd_mach_h8300s
;
2048 /* !! FIXME this probably isn't the right place for this */
2049 abfd
->flags
|= BFD_IS_RELAXABLE
;
2053 #ifdef SH_ARCH_MAGIC_BIG
2054 case SH_ARCH_MAGIC_BIG
:
2055 case SH_ARCH_MAGIC_LITTLE
:
2057 case SH_ARCH_MAGIC_WINCE
:
2064 #ifdef MIPS_ARCH_MAGIC_WINCE
2065 case MIPS_ARCH_MAGIC_WINCE
:
2066 arch
= bfd_arch_mips
;
2073 arch
= bfd_arch_h8500
;
2080 #ifdef LYNXCOFFMAGIC
2083 arch
= bfd_arch_sparc
;
2090 arch
= bfd_arch_tic30
;
2095 #ifdef TICOFF_TARGET_ARCH
2096 /* this TI COFF section should be used by all new TI COFF v0 targets */
2098 arch
= TICOFF_TARGET_ARCH
;
2104 /* this TI COFF section should be used by all new TI COFF v1/2 targets */
2105 /* TI COFF1 and COFF2 use the target_id field to specify which arch */
2108 switch (internal_f
->f_target_id
)
2112 arch
= TICOFF_TARGET_ARCH
;
2116 arch
= bfd_arch_obscure
;
2117 (*_bfd_error_handler
)
2118 (_("Unrecognized TI COFF target id '0x%x'"),
2119 internal_f
->f_target_id
);
2125 #ifdef TIC80_ARCH_MAGIC
2126 case TIC80_ARCH_MAGIC
:
2127 arch
= bfd_arch_tic80
;
2133 arch
= bfd_arch_mcore
;
2136 default: /* Unreadable input file type */
2137 arch
= bfd_arch_obscure
;
2141 bfd_default_set_arch_mach (abfd
, arch
, machine
);
2145 #ifdef SYMNAME_IN_DEBUG
2147 static boolean symname_in_debug_hook
2148 PARAMS ((bfd
*, struct internal_syment
*));
2151 symname_in_debug_hook (abfd
, sym
)
2152 bfd
* abfd ATTRIBUTE_UNUSED
;
2153 struct internal_syment
*sym
;
2155 return SYMNAME_IN_DEBUG (sym
) ? true : false;
2160 #define symname_in_debug_hook \
2161 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2168 #define FORCE_SYMNAMES_IN_STRINGS
2171 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2173 static boolean coff_pointerize_aux_hook
2174 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
2175 unsigned int, combined_entry_type
*));
2179 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
2180 bfd
*abfd ATTRIBUTE_UNUSED
;
2181 combined_entry_type
*table_base
;
2182 combined_entry_type
*symbol
;
2183 unsigned int indaux
;
2184 combined_entry_type
*aux
;
2186 int class = symbol
->u
.syment
.n_sclass
;
2188 if ((class == C_EXT
|| class == C_HIDEXT
)
2189 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2191 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) == XTY_LD
)
2193 aux
->u
.auxent
.x_csect
.x_scnlen
.p
=
2194 table_base
+ aux
->u
.auxent
.x_csect
.x_scnlen
.l
;
2195 aux
->fix_scnlen
= 1;
2198 /* Return true to indicate that the caller should not do any
2199 further work on this auxent. */
2203 /* Return false to indicate that this auxent should be handled by
2211 /* We don't want to pointerize bal entries. */
2213 static boolean coff_pointerize_aux_hook
2214 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
2215 unsigned int, combined_entry_type
*));
2219 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
2220 bfd
*abfd ATTRIBUTE_UNUSED
;
2221 combined_entry_type
*table_base ATTRIBUTE_UNUSED
;
2222 combined_entry_type
*symbol
;
2223 unsigned int indaux
;
2224 combined_entry_type
*aux ATTRIBUTE_UNUSED
;
2226 /* Return true if we don't want to pointerize this aux entry, which
2227 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2229 && (symbol
->u
.syment
.n_sclass
== C_LEAFPROC
2230 || symbol
->u
.syment
.n_sclass
== C_LEAFSTAT
2231 || symbol
->u
.syment
.n_sclass
== C_LEAFEXT
));
2236 #define coff_pointerize_aux_hook 0
2239 #endif /* ! RS6000COFF_C */
2241 /* Print an aux entry. This returns true if it has printed it. */
2243 static boolean coff_print_aux
2244 PARAMS ((bfd
*, FILE *, combined_entry_type
*, combined_entry_type
*,
2245 combined_entry_type
*, unsigned int));
2248 coff_print_aux (abfd
, file
, table_base
, symbol
, aux
, indaux
)
2249 bfd
*abfd ATTRIBUTE_UNUSED
;
2250 FILE *file ATTRIBUTE_UNUSED
;
2251 combined_entry_type
*table_base ATTRIBUTE_UNUSED
;
2252 combined_entry_type
*symbol ATTRIBUTE_UNUSED
;
2253 combined_entry_type
*aux ATTRIBUTE_UNUSED
;
2254 unsigned int indaux ATTRIBUTE_UNUSED
;
2257 if ((symbol
->u
.syment
.n_sclass
== C_EXT
2258 || symbol
->u
.syment
.n_sclass
== C_HIDEXT
)
2259 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2261 /* This is a csect entry. */
2262 fprintf (file
, "AUX ");
2263 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) != XTY_LD
)
2265 BFD_ASSERT (! aux
->fix_scnlen
);
2266 fprintf (file
, "val %5ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2270 fprintf (file
, "indx ");
2271 if (! aux
->fix_scnlen
)
2272 fprintf (file
, "%4ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2274 fprintf (file
, "%4ld",
2275 (long) (aux
->u
.auxent
.x_csect
.x_scnlen
.p
- table_base
));
2278 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2279 aux
->u
.auxent
.x_csect
.x_parmhash
,
2280 (unsigned int) aux
->u
.auxent
.x_csect
.x_snhash
,
2281 SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
),
2282 SMTYP_ALIGN (aux
->u
.auxent
.x_csect
.x_smtyp
),
2283 (unsigned int) aux
->u
.auxent
.x_csect
.x_smclas
,
2284 aux
->u
.auxent
.x_csect
.x_stab
,
2285 (unsigned int) aux
->u
.auxent
.x_csect
.x_snstab
);
2290 /* Return false to indicate that no special action was taken. */
2298 To write relocations, the back end steps though the
2299 canonical relocation table and create an
2300 @code{internal_reloc}. The symbol index to use is removed from
2301 the @code{offset} field in the symbol table supplied. The
2302 address comes directly from the sum of the section base
2303 address and the relocation offset; the type is dug directly
2304 from the howto field. Then the @code{internal_reloc} is
2305 swapped into the shape of an @code{external_reloc} and written
2312 static int compare_arelent_ptr
PARAMS ((const PTR
, const PTR
));
2314 /* AUX's ld wants relocations to be sorted */
2316 compare_arelent_ptr (x
, y
)
2320 const arelent
**a
= (const arelent
**) x
;
2321 const arelent
**b
= (const arelent
**) y
;
2322 bfd_size_type aadr
= (*a
)->address
;
2323 bfd_size_type badr
= (*b
)->address
;
2325 return (aadr
< badr
? -1 : badr
< aadr
? 1 : 0);
2328 #endif /* TARG_AUX */
2331 coff_write_relocs (abfd
, first_undef
)
2337 for (s
= abfd
->sections
; s
!= (asection
*) NULL
; s
= s
->next
)
2340 struct external_reloc dst
;
2346 /* sort relocations before we write them out */
2347 p
= (arelent
**) bfd_malloc (s
->reloc_count
* sizeof (arelent
*));
2348 if (p
== NULL
&& s
->reloc_count
> 0)
2350 memcpy (p
, s
->orelocation
, s
->reloc_count
* sizeof (arelent
*));
2351 qsort (p
, s
->reloc_count
, sizeof (arelent
*), compare_arelent_ptr
);
2354 if (bfd_seek (abfd
, s
->rel_filepos
, SEEK_SET
) != 0)
2358 if (s
->reloc_count
> 0xffff)
2360 /* encode real count here as first reloc */
2361 struct internal_reloc n
;
2362 memset ((PTR
) & n
, 0, sizeof (n
));
2363 /* add one to count *this* reloc (grr) */
2364 n
.r_vaddr
= s
->reloc_count
+ 1;
2365 coff_swap_reloc_out (abfd
, &n
, &dst
);
2366 if (bfd_write ((PTR
) & dst
, 1, bfd_coff_relsz (abfd
), abfd
)
2367 != bfd_coff_relsz (abfd
))
2372 for (i
= 0; i
< s
->reloc_count
; i
++)
2374 struct internal_reloc n
;
2376 memset ((PTR
) & n
, 0, sizeof (n
));
2378 /* Now we've renumbered the symbols we know where the
2379 undefined symbols live in the table. Check the reloc
2380 entries for symbols who's output bfd isn't the right one.
2381 This is because the symbol was undefined (which means
2382 that all the pointers are never made to point to the same
2383 place). This is a bad thing,'cause the symbols attached
2384 to the output bfd are indexed, so that the relocation
2385 entries know which symbol index they point to. So we
2386 have to look up the output symbol here. */
2388 if (q
->sym_ptr_ptr
[0]->the_bfd
!= abfd
)
2391 const char *sname
= q
->sym_ptr_ptr
[0]->name
;
2392 asymbol
**outsyms
= abfd
->outsymbols
;
2393 for (i
= first_undef
; outsyms
[i
]; i
++)
2395 const char *intable
= outsyms
[i
]->name
;
2396 if (strcmp (intable
, sname
) == 0) {
2397 /* got a hit, so repoint the reloc */
2398 q
->sym_ptr_ptr
= outsyms
+ i
;
2404 n
.r_vaddr
= q
->address
+ s
->vma
;
2407 /* The 29k const/consth reloc pair is a real kludge. The consth
2408 part doesn't have a symbol; it has an offset. So rebuilt
2410 if (q
->howto
->type
== R_IHCONST
)
2411 n
.r_symndx
= q
->addend
;
2416 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2417 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q
,s
))
2419 if (q
->sym_ptr_ptr
== bfd_abs_section_ptr
->symbol_ptr_ptr
)
2421 /* This is a relocation relative to the absolute symbol. */
2425 n
.r_symndx
= get_index ((*(q
->sym_ptr_ptr
)));
2426 /* Take notice if the symbol reloc points to a symbol
2427 we don't have in our symbol table. What should we
2429 if (n
.r_symndx
> obj_conv_table_size (abfd
))
2434 #ifdef SWAP_OUT_RELOC_OFFSET
2435 n
.r_offset
= q
->addend
;
2439 /* Work out reloc type from what is required */
2440 SELECT_RELOC (n
, q
->howto
);
2442 n
.r_type
= q
->howto
->type
;
2444 coff_swap_reloc_out (abfd
, &n
, &dst
);
2445 if (bfd_write ((PTR
) & dst
, 1, bfd_coff_relsz (abfd
), abfd
)
2446 != bfd_coff_relsz (abfd
))
2459 /* Set flags and magic number of a coff file from architecture and machine
2460 type. Result is true if we can represent the arch&type, false if not. */
2463 coff_set_flags (abfd
, magicp
, flagsp
)
2465 unsigned int *magicp ATTRIBUTE_UNUSED
;
2466 unsigned short *flagsp ATTRIBUTE_UNUSED
;
2468 switch (bfd_get_arch (abfd
))
2473 switch (bfd_get_mach (abfd
))
2475 case bfd_mach_z8001
:
2478 case bfd_mach_z8002
:
2492 *magicp
= I960ROMAGIC
;
2494 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2495 I960RWMAGIC); FIXME???
2497 switch (bfd_get_mach (abfd
))
2499 case bfd_mach_i960_core
:
2502 case bfd_mach_i960_kb_sb
:
2505 case bfd_mach_i960_mc
:
2508 case bfd_mach_i960_xa
:
2511 case bfd_mach_i960_ca
:
2514 case bfd_mach_i960_ka_sa
:
2517 case bfd_mach_i960_jx
:
2520 case bfd_mach_i960_hx
:
2533 case bfd_arch_tic30
:
2534 *magicp
= TIC30MAGIC
;
2538 #ifdef TICOFF_DEFAULT_MAGIC
2539 case TICOFF_TARGET_ARCH
:
2540 /* if there's no indication of which version we want, use the default */
2542 *magicp
= TICOFF_DEFAULT_MAGIC
;
2545 /* we may want to output in a different COFF version */
2546 switch (abfd
->xvec
->name
[4])
2549 *magicp
= TICOFF0MAGIC
;
2552 *magicp
= TICOFF1MAGIC
;
2555 *magicp
= TICOFF2MAGIC
;
2564 #ifdef TIC80_ARCH_MAGIC
2565 case bfd_arch_tic80
:
2566 *magicp
= TIC80_ARCH_MAGIC
;
2572 * magicp
= ARMPEMAGIC
;
2574 * magicp
= ARMMAGIC
;
2577 if (APCS_SET (abfd
))
2579 if (APCS_26_FLAG (abfd
))
2580 * flagsp
|= F_APCS26
;
2582 if (APCS_FLOAT_FLAG (abfd
))
2583 * flagsp
|= F_APCS_FLOAT
;
2585 if (PIC_FLAG (abfd
))
2588 if (INTERWORK_SET (abfd
) && INTERWORK_FLAG (abfd
))
2589 * flagsp
|= F_INTERWORK
;
2590 switch (bfd_get_mach (abfd
))
2592 case bfd_mach_arm_2
: * flagsp
|= F_ARM_2
; break;
2593 case bfd_mach_arm_2a
: * flagsp
|= F_ARM_2a
; break;
2594 case bfd_mach_arm_3
: * flagsp
|= F_ARM_3
; break;
2595 case bfd_mach_arm_3M
: * flagsp
|= F_ARM_3M
; break;
2596 case bfd_mach_arm_4
: * flagsp
|= F_ARM_4
; break;
2597 case bfd_mach_arm_4T
: * flagsp
|= F_ARM_4T
; break;
2598 case bfd_mach_arm_5
: * flagsp
|= F_ARM_5
; break;
2599 case bfd_mach_arm_5T
: * flagsp
|= F_ARM_5
; break; /* XXX - we do not have an F_ARM_5T */
2604 case bfd_arch_powerpc
:
2611 *magicp
= I386MAGIC
;
2613 /* Just overwrite the usual value if we're doing Lynx. */
2614 *magicp
= LYNXCOFFMAGIC
;
2621 *magicp
= I860MAGIC
;
2627 *magicp
= IA64MAGIC
;
2633 #ifdef APOLLOM68KMAGIC
2634 *magicp
= APOLLO_COFF_VERSION_NUMBER
;
2636 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2637 #ifdef NAMES_HAVE_UNDERSCORE
2638 *magicp
= MC68KBCSMAGIC
;
2640 *magicp
= MC68MAGIC
;
2644 /* Just overwrite the usual value if we're doing Lynx. */
2645 *magicp
= LYNXCOFFMAGIC
;
2653 *magicp
= MC88OMAGIC
;
2658 case bfd_arch_h8300
:
2659 switch (bfd_get_mach (abfd
))
2661 case bfd_mach_h8300
:
2662 *magicp
= H8300MAGIC
;
2664 case bfd_mach_h8300h
:
2665 *magicp
= H8300HMAGIC
;
2667 case bfd_mach_h8300s
:
2668 *magicp
= H8300SMAGIC
;
2674 #ifdef SH_ARCH_MAGIC_BIG
2676 #ifdef COFF_IMAGE_WITH_PE
2677 *magicp
= SH_ARCH_MAGIC_WINCE
;
2679 if (bfd_big_endian (abfd
))
2680 *magicp
= SH_ARCH_MAGIC_BIG
;
2682 *magicp
= SH_ARCH_MAGIC_LITTLE
;
2688 #ifdef MIPS_ARCH_MAGIC_WINCE
2690 *magicp
= MIPS_ARCH_MAGIC_WINCE
;
2696 case bfd_arch_sparc
:
2697 *magicp
= SPARCMAGIC
;
2699 /* Just overwrite the usual value if we're doing Lynx. */
2700 *magicp
= LYNXCOFFMAGIC
;
2707 case bfd_arch_h8500
:
2708 *magicp
= H8500MAGIC
;
2712 #ifdef A29K_MAGIC_BIG
2714 if (bfd_big_endian (abfd
))
2715 *magicp
= A29K_MAGIC_BIG
;
2717 *magicp
= A29K_MAGIC_LITTLE
;
2723 case bfd_arch_we32k
:
2724 *magicp
= WE32KMAGIC
;
2730 case bfd_arch_rs6000
:
2732 case bfd_arch_powerpc
:
2735 if (bfd_get_mach (abfd
) == bfd_mach_ppc_620
2736 && !strncmp (abfd
->xvec
->name
,"aix", 3))
2737 *magicp
= U803XTOCMAGIC
;
2740 *magicp
= U802TOCMAGIC
;
2747 case bfd_arch_mcore
:
2748 * magicp
= MCOREMAGIC
;
2758 default: /* Unknown architecture. */
2759 /* Fall through to "return false" below, to avoid
2760 "statement never reached" errors on the one below. */
2769 coff_set_arch_mach (abfd
, arch
, machine
)
2771 enum bfd_architecture arch
;
2772 unsigned long machine
;
2775 unsigned short dummy2
;
2777 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
2780 if (arch
!= bfd_arch_unknown
&&
2781 coff_set_flags (abfd
, &dummy1
, &dummy2
) != true)
2782 return false; /* We can't represent this type */
2784 return true; /* We're easy ... */
2787 #ifdef COFF_IMAGE_WITH_PE
2789 /* This is used to sort sections by VMA, as required by PE image
2792 static int sort_by_secaddr
PARAMS ((const PTR
, const PTR
));
2795 sort_by_secaddr (arg1
, arg2
)
2799 const asection
*a
= *(const asection
**) arg1
;
2800 const asection
*b
= *(const asection
**) arg2
;
2802 if (a
->vma
< b
->vma
)
2804 else if (a
->vma
> b
->vma
)
2810 #endif /* COFF_IMAGE_WITH_PE */
2812 /* Calculate the file position for each section. */
2815 #define ALIGN_SECTIONS_IN_FILE
2817 #if defined(TIC80COFF) || defined(TICOFF)
2818 #undef ALIGN_SECTIONS_IN_FILE
2822 coff_compute_section_file_positions (abfd
)
2826 asection
*previous
= (asection
*) NULL
;
2827 file_ptr sofar
= bfd_coff_filhsz (abfd
);
2828 boolean align_adjust
;
2829 #ifdef ALIGN_SECTIONS_IN_FILE
2834 /* On XCOFF, if we have symbols, set up the .debug section. */
2835 if (bfd_get_symcount (abfd
) > 0)
2838 bfd_size_type i
, symcount
;
2842 symcount
= bfd_get_symcount (abfd
);
2843 for (symp
= abfd
->outsymbols
, i
= 0; i
< symcount
; symp
++, i
++)
2845 coff_symbol_type
*cf
;
2847 cf
= coff_symbol_from (abfd
, *symp
);
2849 && cf
->native
!= NULL
2850 && SYMNAME_IN_DEBUG (&cf
->native
->u
.syment
))
2854 len
= strlen (bfd_asymbol_name (*symp
));
2855 if (len
> SYMNMLEN
|| bfd_coff_force_symnames_in_strings (abfd
))
2856 sz
+= len
+ 1 + bfd_coff_debug_string_prefix_length (abfd
);
2863 dsec
= bfd_make_section_old_way (abfd
, ".debug");
2866 dsec
->_raw_size
= sz
;
2867 dsec
->flags
|= SEC_HAS_CONTENTS
;
2872 #ifdef COFF_IMAGE_WITH_PE
2874 if (coff_data (abfd
)->link_info
)
2876 page_size
= pe_data (abfd
)->pe_opthdr
.FileAlignment
;
2879 page_size
= PE_DEF_FILE_ALIGNMENT
;
2881 #ifdef COFF_PAGE_SIZE
2882 int page_size
= COFF_PAGE_SIZE
;
2886 if (bfd_get_start_address (abfd
))
2888 /* A start address may have been added to the original file. In this
2889 case it will need an optional header to record it. */
2890 abfd
->flags
|= EXEC_P
;
2893 if (abfd
->flags
& EXEC_P
)
2894 sofar
+= bfd_coff_aoutsz (abfd
);
2896 else if (xcoff_data (abfd
)->full_aouthdr
)
2897 sofar
+= bfd_coff_aoutsz (abfd
);
2899 sofar
+= SMALL_AOUTSZ
;
2902 sofar
+= abfd
->section_count
* bfd_coff_scnhsz (abfd
);
2905 /* XCOFF handles overflows in the reloc and line number count fields
2906 by allocating a new section header to hold the correct counts. */
2907 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2908 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2909 sofar
+= bfd_coff_scnhsz (abfd
);
2912 #ifdef COFF_IMAGE_WITH_PE
2914 /* PE requires the sections to be in memory order when listed in
2915 the section headers. It also does not like empty loadable
2916 sections. The sections apparently do not have to be in the
2917 right order in the image file itself, but we do need to get the
2918 target_index values right. */
2921 asection
**section_list
;
2926 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2929 /* We allocate an extra cell to simplify the final loop. */
2930 section_list
= bfd_malloc (sizeof (struct asection
*) * (count
+ 1));
2931 if (section_list
== NULL
)
2935 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2937 section_list
[i
] = current
;
2940 section_list
[i
] = NULL
;
2942 qsort (section_list
, count
, sizeof (asection
*), sort_by_secaddr
);
2944 /* Rethread the linked list into sorted order; at the same time,
2945 assign target_index values. */
2947 abfd
->sections
= section_list
[0];
2948 for (i
= 0; i
< count
; i
++)
2950 current
= section_list
[i
];
2951 current
->next
= section_list
[i
+ 1];
2953 /* Later, if the section has zero size, we'll be throwing it
2954 away, so we don't want to number it now. Note that having
2955 a zero size and having real contents are different
2956 concepts: .bss has no contents, but (usually) non-zero
2958 if (current
->_raw_size
== 0)
2960 /* Discard. However, it still might have (valid) symbols
2961 in it, so arbitrarily set it to section 1 (indexing is
2962 1-based here; usually .text). __end__ and other
2963 contents of .endsection really have this happen.
2964 FIXME: This seems somewhat dubious. */
2965 current
->target_index
= 1;
2968 current
->target_index
= target_index
++;
2971 free (section_list
);
2973 #else /* ! COFF_IMAGE_WITH_PE */
2975 /* Set the target_index field. */
2979 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2980 current
->target_index
= target_index
++;
2982 #endif /* ! COFF_IMAGE_WITH_PE */
2984 align_adjust
= false;
2985 for (current
= abfd
->sections
;
2986 current
!= (asection
*) NULL
;
2987 current
= current
->next
)
2989 #ifdef COFF_IMAGE_WITH_PE
2990 /* With PE we have to pad each section to be a multiple of its
2991 page size too, and remember both sizes. */
2992 if (coff_section_data (abfd
, current
) == NULL
)
2994 current
->used_by_bfd
=
2995 (PTR
) bfd_zalloc (abfd
, sizeof (struct coff_section_tdata
));
2996 if (current
->used_by_bfd
== NULL
)
2999 if (pei_section_data (abfd
, current
) == NULL
)
3001 coff_section_data (abfd
, current
)->tdata
=
3002 (PTR
) bfd_zalloc (abfd
, sizeof (struct pei_section_tdata
));
3003 if (coff_section_data (abfd
, current
)->tdata
== NULL
)
3006 if (pei_section_data (abfd
, current
)->virt_size
== 0)
3007 pei_section_data (abfd
, current
)->virt_size
= current
->_raw_size
;
3010 /* Only deal with sections which have contents. */
3011 if (!(current
->flags
& SEC_HAS_CONTENTS
))
3014 #ifdef COFF_IMAGE_WITH_PE
3015 /* Make sure we skip empty sections in a PE image. */
3016 if (current
->_raw_size
== 0)
3020 /* Align the sections in the file to the same boundary on
3021 which they are aligned in virtual memory. I960 doesn't
3022 do this (FIXME) so we can stay in sync with Intel. 960
3023 doesn't yet page from files... */
3024 #ifdef ALIGN_SECTIONS_IN_FILE
3025 if ((abfd
->flags
& EXEC_P
) != 0)
3027 /* make sure this section is aligned on the right boundary - by
3028 padding the previous section up if necessary */
3031 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
3032 if (previous
!= (asection
*) NULL
)
3034 previous
->_raw_size
+= sofar
- old_sofar
;
3040 /* In demand paged files the low order bits of the file offset
3041 must match the low order bits of the virtual address. */
3042 #ifdef COFF_PAGE_SIZE
3043 if ((abfd
->flags
& D_PAGED
) != 0
3044 && (current
->flags
& SEC_ALLOC
) != 0)
3045 sofar
+= (current
->vma
- sofar
) % page_size
;
3047 current
->filepos
= sofar
;
3049 #ifdef COFF_IMAGE_WITH_PE
3050 /* Set the padded size. */
3051 current
->_raw_size
= (current
->_raw_size
+ page_size
-1) & -page_size
;
3054 sofar
+= current
->_raw_size
;
3056 #ifdef ALIGN_SECTIONS_IN_FILE
3057 /* make sure that this section is of the right size too */
3058 if ((abfd
->flags
& EXEC_P
) == 0)
3060 bfd_size_type old_size
;
3062 old_size
= current
->_raw_size
;
3063 current
->_raw_size
= BFD_ALIGN (current
->_raw_size
,
3064 1 << current
->alignment_power
);
3065 align_adjust
= current
->_raw_size
!= old_size
;
3066 sofar
+= current
->_raw_size
- old_size
;
3071 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
3072 align_adjust
= sofar
!= old_sofar
;
3073 current
->_raw_size
+= sofar
- old_sofar
;
3077 #ifdef COFF_IMAGE_WITH_PE
3078 /* For PE we need to make sure we pad out to the aligned
3079 _raw_size, in case the caller only writes out data to the
3080 unaligned _raw_size. */
3081 if (pei_section_data (abfd
, current
)->virt_size
< current
->_raw_size
)
3082 align_adjust
= true;
3086 /* Force .lib sections to start at zero. The vma is then
3087 incremented in coff_set_section_contents. This is right for
3089 if (strcmp (current
->name
, _LIB
) == 0)
3090 bfd_set_section_vma (abfd
, current
, 0);
3096 /* It is now safe to write to the output file. If we needed an
3097 alignment adjustment for the last section, then make sure that
3098 there is a byte at offset sofar. If there are no symbols and no
3099 relocs, then nothing follows the last section. If we don't force
3100 the last byte out, then the file may appear to be truncated. */
3106 if (bfd_seek (abfd
, sofar
- 1, SEEK_SET
) != 0
3107 || bfd_write (&b
, 1, 1, abfd
) != 1)
3111 /* Make sure the relocations are aligned. We don't need to make
3112 sure that this byte exists, because it will only matter if there
3113 really are relocs. */
3114 sofar
= BFD_ALIGN (sofar
, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER
);
3116 obj_relocbase (abfd
) = sofar
;
3117 abfd
->output_has_begun
= true;
3124 /* This can never work, because it is called too late--after the
3125 section positions have been set. I can't figure out what it is
3126 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3128 /* If .file, .text, .data, .bss symbols are missing, add them. */
3129 /* @@ Should we only be adding missing symbols, or overriding the aux
3130 values for existing section symbols? */
3132 coff_add_missing_symbols (abfd
)
3135 unsigned int nsyms
= bfd_get_symcount (abfd
);
3136 asymbol
**sympp
= abfd
->outsymbols
;
3139 int need_text
= 1, need_data
= 1, need_bss
= 1, need_file
= 1;
3141 for (i
= 0; i
< nsyms
; i
++)
3143 coff_symbol_type
*csym
= coff_symbol_from (abfd
, sympp
[i
]);
3147 /* only do this if there is a coff representation of the input
3149 if (csym
->native
&& csym
->native
->u
.syment
.n_sclass
== C_FILE
)
3154 name
= csym
->symbol
.name
;
3157 if (!strcmp (name
, _TEXT
))
3160 else if (!strcmp (name
, ".wtext"))
3163 else if (!strcmp (name
, _DATA
))
3165 else if (!strcmp (name
, _BSS
))
3169 /* Now i == bfd_get_symcount (abfd). */
3170 /* @@ For now, don't deal with .file symbol. */
3173 if (!need_text
&& !need_data
&& !need_bss
&& !need_file
)
3175 nsyms
+= need_text
+ need_data
+ need_bss
+ need_file
;
3176 sympp2
= (asymbol
**) bfd_alloc (abfd
, nsyms
* sizeof (asymbol
*));
3179 memcpy (sympp2
, sympp
, i
* sizeof (asymbol
*));
3182 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3186 sympp2
[i
++] = coff_section_symbol (abfd
, _TEXT
);
3188 sympp2
[i
++] = coff_section_symbol (abfd
, _DATA
);
3190 sympp2
[i
++] = coff_section_symbol (abfd
, _BSS
);
3191 BFD_ASSERT (i
== nsyms
);
3192 bfd_set_symtab (abfd
, sympp2
, nsyms
);
3201 coff_write_object_contents (abfd
)
3205 boolean hasrelocs
= false;
3206 boolean haslinno
= false;
3207 boolean hasdebug
= false;
3209 file_ptr reloc_base
;
3210 file_ptr lineno_base
;
3212 unsigned long reloc_size
= 0, reloc_count
= 0;
3213 unsigned long lnno_size
= 0;
3214 boolean long_section_names
;
3215 asection
*text_sec
= NULL
;
3216 asection
*data_sec
= NULL
;
3217 asection
*bss_sec
= NULL
;
3218 struct internal_filehdr internal_f
;
3219 struct internal_aouthdr internal_a
;
3220 #ifdef COFF_LONG_SECTION_NAMES
3221 size_t string_size
= STRING_SIZE_SIZE
;
3224 bfd_set_error (bfd_error_system_call
);
3226 /* Make a pass through the symbol table to count line number entries and
3227 put them into the correct asections */
3229 lnno_size
= coff_count_linenumbers (abfd
) * bfd_coff_linesz (abfd
);
3231 if (abfd
->output_has_begun
== false)
3233 if (! coff_compute_section_file_positions (abfd
))
3237 reloc_base
= obj_relocbase (abfd
);
3239 /* Work out the size of the reloc and linno areas */
3241 for (current
= abfd
->sections
; current
!= NULL
; current
=
3245 /* we store the actual reloc count in the first reloc's addr */
3246 if (current
->reloc_count
> 0xffff)
3249 reloc_count
+= current
->reloc_count
;
3252 reloc_size
= reloc_count
* bfd_coff_relsz (abfd
);
3254 lineno_base
= reloc_base
+ reloc_size
;
3255 sym_base
= lineno_base
+ lnno_size
;
3257 /* Indicate in each section->line_filepos its actual file address */
3258 for (current
= abfd
->sections
; current
!= NULL
; current
=
3261 if (current
->lineno_count
)
3263 current
->line_filepos
= lineno_base
;
3264 current
->moving_line_filepos
= lineno_base
;
3265 lineno_base
+= current
->lineno_count
* bfd_coff_linesz (abfd
);
3269 current
->line_filepos
= 0;
3271 if (current
->reloc_count
)
3273 current
->rel_filepos
= reloc_base
;
3274 reloc_base
+= current
->reloc_count
* bfd_coff_relsz (abfd
);
3276 /* extra reloc to hold real count */
3277 if (current
->reloc_count
> 0xffff)
3278 reloc_base
+= bfd_coff_relsz (abfd
);
3283 current
->rel_filepos
= 0;
3287 /* Write section headers to the file. */
3288 internal_f
.f_nscns
= 0;
3290 if ((abfd
->flags
& EXEC_P
) != 0)
3291 scn_base
= bfd_coff_filhsz (abfd
) + bfd_coff_aoutsz (abfd
);
3294 scn_base
= bfd_coff_filhsz (abfd
);
3296 if (xcoff_data (abfd
)->full_aouthdr
)
3297 scn_base
+= bfd_coff_aoutsz (abfd
);
3299 scn_base
+= SMALL_AOUTSZ
;
3303 if (bfd_seek (abfd
, scn_base
, SEEK_SET
) != 0)
3306 long_section_names
= false;
3307 for (current
= abfd
->sections
;
3309 current
= current
->next
)
3311 struct internal_scnhdr section
;
3312 boolean is_reloc_section
= false;
3314 #ifdef COFF_IMAGE_WITH_PE
3315 if (strcmp (current
->name
, ".reloc") == 0)
3317 is_reloc_section
= true;
3319 pe_data (abfd
)->has_reloc_section
= 1;
3323 internal_f
.f_nscns
++;
3325 strncpy (section
.s_name
, current
->name
, SCNNMLEN
);
3327 #ifdef COFF_LONG_SECTION_NAMES
3328 /* Handle long section names as in PE. This must be compatible
3329 with the code in coff_write_symbols and _bfd_coff_final_link. */
3333 len
= strlen (current
->name
);
3336 memset (section
.s_name
, 0, SCNNMLEN
);
3337 sprintf (section
.s_name
, "/%lu", (unsigned long) string_size
);
3338 string_size
+= len
+ 1;
3339 long_section_names
= true;
3345 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3346 Ian Taylor <ian@cygnus.com>. */
3347 if (strcmp (current
->name
, _LIB
) == 0)
3348 section
.s_vaddr
= 0;
3351 section
.s_vaddr
= current
->vma
;
3352 section
.s_paddr
= current
->lma
;
3353 section
.s_size
= current
->_raw_size
;
3354 #ifdef coff_get_section_load_page
3355 section
.s_page
= coff_get_section_load_page (current
);
3359 section
.s_paddr
= 0;
3361 #ifdef COFF_IMAGE_WITH_PE
3362 /* Reminder: s_paddr holds the virtual size of the section. */
3363 if (coff_section_data (abfd
, current
) != NULL
3364 && pei_section_data (abfd
, current
) != NULL
)
3365 section
.s_paddr
= pei_section_data (abfd
, current
)->virt_size
;
3367 section
.s_paddr
= 0;
3371 If this section has no size or is unloadable then the scnptr
3374 if (current
->_raw_size
== 0 ||
3375 (current
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
3377 section
.s_scnptr
= 0;
3381 section
.s_scnptr
= current
->filepos
;
3383 section
.s_relptr
= current
->rel_filepos
;
3384 section
.s_lnnoptr
= current
->line_filepos
;
3385 section
.s_nreloc
= current
->reloc_count
;
3386 section
.s_nlnno
= current
->lineno_count
;
3387 #ifndef COFF_IMAGE_WITH_PE
3388 /* In PEI, relocs come in the .reloc section. */
3389 if (current
->reloc_count
!= 0)
3392 if (current
->lineno_count
!= 0)
3394 if ((current
->flags
& SEC_DEBUGGING
) != 0
3395 && ! is_reloc_section
)
3400 /* Indicate the use of an XCOFF overflow section header. */
3401 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3403 section
.s_nreloc
= 0xffff;
3404 section
.s_nlnno
= 0xffff;
3409 section
.s_flags
= sec_to_styp_flags (current
->name
, current
->flags
);
3411 if (!strcmp (current
->name
, _TEXT
))
3415 else if (!strcmp (current
->name
, _DATA
))
3419 else if (!strcmp (current
->name
, _BSS
))
3425 section
.s_align
= (current
->alignment_power
3426 ? 1 << current
->alignment_power
3430 /* TI COFF puts the alignment power in bits 8-11 of the flags */
3431 section
.s_flags
|= (current
->alignment_power
& 0xF) << 8;
3433 #ifdef COFF_ENCODE_ALIGNMENT
3434 COFF_ENCODE_ALIGNMENT(section
, current
->alignment_power
);
3437 #ifdef COFF_IMAGE_WITH_PE
3438 /* Suppress output of the sections if they are null. ld
3439 includes the bss and data sections even if there is no size
3440 assigned to them. NT loader doesn't like it if these section
3441 headers are included if the sections themselves are not
3442 needed. See also coff_compute_section_file_positions. */
3443 if (section
.s_size
== 0)
3444 internal_f
.f_nscns
--;
3449 if (coff_swap_scnhdr_out (abfd
, §ion
, &buff
) == 0
3450 || bfd_write ((PTR
) (&buff
), 1, bfd_coff_scnhsz (abfd
), abfd
)
3451 != bfd_coff_scnhsz (abfd
))
3456 /* PE stores COMDAT section information in the symbol table. If
3457 this section is supposed to have some COMDAT info, track down
3458 the symbol in the symbol table and modify it. */
3459 if ((current
->flags
& SEC_LINK_ONCE
) != 0)
3461 unsigned int i
, count
;
3463 coff_symbol_type
*csym
= NULL
;
3467 count
= bfd_get_symcount (abfd
);
3468 for (i
= 0, psym
= abfd
->outsymbols
; i
< count
; i
++, psym
++)
3470 if ((*psym
)->section
!= current
)
3473 /* Remember the location of the first symbol in this
3475 if (psymsec
== NULL
)
3478 /* See if this is the section symbol. */
3479 if (strcmp ((*psym
)->name
, current
->name
) == 0)
3481 csym
= coff_symbol_from (abfd
, *psym
);
3483 || csym
->native
== NULL
3484 || csym
->native
->u
.syment
.n_numaux
< 1
3485 || csym
->native
->u
.syment
.n_sclass
!= C_STAT
3486 || csym
->native
->u
.syment
.n_type
!= T_NULL
)
3489 /* Here *PSYM is the section symbol for CURRENT. */
3496 Note that we might not if we're converting the file from
3497 some other object file format. */
3500 combined_entry_type
*aux
;
3502 /* We don't touch the x_checksum field. The
3503 x_associated field is not currently supported. */
3505 aux
= csym
->native
+ 1;
3506 switch (current
->flags
& SEC_LINK_DUPLICATES
)
3508 case SEC_LINK_DUPLICATES_DISCARD
:
3509 aux
->u
.auxent
.x_scn
.x_comdat
= IMAGE_COMDAT_SELECT_ANY
;
3512 case SEC_LINK_DUPLICATES_ONE_ONLY
:
3513 aux
->u
.auxent
.x_scn
.x_comdat
=
3514 IMAGE_COMDAT_SELECT_NODUPLICATES
;
3517 case SEC_LINK_DUPLICATES_SAME_SIZE
:
3518 aux
->u
.auxent
.x_scn
.x_comdat
=
3519 IMAGE_COMDAT_SELECT_SAME_SIZE
;
3522 case SEC_LINK_DUPLICATES_SAME_CONTENTS
:
3523 aux
->u
.auxent
.x_scn
.x_comdat
=
3524 IMAGE_COMDAT_SELECT_EXACT_MATCH
;
3528 /* The COMDAT symbol must be the first symbol from this
3529 section in the symbol table. In order to make this
3530 work, we move the COMDAT symbol before the first
3531 symbol we found in the search above. It's OK to
3532 rearrange the symbol table at this point, because
3533 coff_renumber_symbols is going to rearrange it
3534 further and fix up all the aux entries. */
3535 if (psym
!= psymsec
)
3541 for (pcopy
= psym
; pcopy
> psymsec
; pcopy
--)
3542 pcopy
[0] = pcopy
[-1];
3547 #endif /* COFF_WITH_PE */
3551 /* XCOFF handles overflows in the reloc and line number count fields
3552 by creating a new section header to hold the correct values. */
3553 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
3555 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3557 struct internal_scnhdr scnhdr
;
3560 internal_f
.f_nscns
++;
3561 strncpy (&(scnhdr
.s_name
[0]), current
->name
, 8);
3562 scnhdr
.s_paddr
= current
->reloc_count
;
3563 scnhdr
.s_vaddr
= current
->lineno_count
;
3565 scnhdr
.s_scnptr
= 0;
3566 scnhdr
.s_relptr
= current
->rel_filepos
;
3567 scnhdr
.s_lnnoptr
= current
->line_filepos
;
3568 scnhdr
.s_nreloc
= current
->target_index
;
3569 scnhdr
.s_nlnno
= current
->target_index
;
3570 scnhdr
.s_flags
= STYP_OVRFLO
;
3571 if (coff_swap_scnhdr_out (abfd
, &scnhdr
, &buff
) == 0
3572 || bfd_write ((PTR
) &buff
, 1, bfd_coff_scnhsz (abfd
), abfd
)
3573 != bfd_coff_scnhsz (abfd
))
3579 /* OK, now set up the filehdr... */
3581 /* Don't include the internal abs section in the section count */
3584 We will NOT put a fucking timestamp in the header here. Every time you
3585 put it back, I will come in and take it out again. I'm sorry. This
3586 field does not belong here. We fill it with a 0 so it compares the
3587 same but is not a reasonable time. -- gnu@cygnus.com
3589 internal_f
.f_timdat
= 0;
3591 internal_f
.f_flags
= 0;
3593 if (abfd
->flags
& EXEC_P
)
3594 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
3597 internal_f
.f_opthdr
= 0;
3599 if (xcoff_data (abfd
)->full_aouthdr
)
3600 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
3602 internal_f
.f_opthdr
= SMALL_AOUTSZ
;
3607 internal_f
.f_flags
|= F_RELFLG
;
3609 internal_f
.f_flags
|= F_LNNO
;
3610 if (abfd
->flags
& EXEC_P
)
3611 internal_f
.f_flags
|= F_EXEC
;
3612 #ifdef COFF_IMAGE_WITH_PE
3614 internal_f
.f_flags
|= IMAGE_FILE_DEBUG_STRIPPED
;
3617 #ifndef COFF_WITH_PE
3618 if (bfd_little_endian (abfd
))
3619 internal_f
.f_flags
|= F_AR32WR
;
3621 internal_f
.f_flags
|= F_AR32W
;
3625 /* target id is used in TI COFF v1 and later; COFF0 won't use this field,
3626 but it doesn't hurt to set it internally */
3627 internal_f
.f_target_id
= TI_TARGET_ID
;
3629 #ifdef TIC80_TARGET_ID
3630 internal_f
.f_target_id
= TIC80_TARGET_ID
;
3634 FIXME, should do something about the other byte orders and
3639 if ((abfd
->flags
& DYNAMIC
) != 0)
3640 internal_f
.f_flags
|= F_SHROBJ
;
3641 if (bfd_get_section_by_name (abfd
, _LOADER
) != NULL
)
3642 internal_f
.f_flags
|= F_DYNLOAD
;
3645 memset (&internal_a
, 0, sizeof internal_a
);
3647 /* Set up architecture-dependent stuff */
3650 unsigned int magic
= 0;
3651 unsigned short flags
= 0;
3652 coff_set_flags (abfd
, &magic
, &flags
);
3653 internal_f
.f_magic
= magic
;
3654 internal_f
.f_flags
|= flags
;
3655 /* ...and the "opt"hdr... */
3658 #ifdef ULTRA3 /* NYU's machine */
3659 /* FIXME: This is a bogus check. I really want to see if there
3660 * is a .shbss or a .shdata section, if so then set the magic
3661 * number to indicate a shared data executable.
3663 if (internal_f
.f_nscns
>= 7)
3664 internal_a
.magic
= SHMAGIC
; /* Shared magic */
3667 internal_a
.magic
= NMAGIC
; /* Assume separate i/d */
3668 #define __A_MAGIC_SET__
3670 #ifdef TICOFF_AOUT_MAGIC
3671 internal_a
.magic
= TICOFF_AOUT_MAGIC
;
3672 #define __A_MAGIC_SET__
3675 internal_a
.magic
= TIC80_ARCH_MAGIC
;
3676 #define __A_MAGIC_SET__
3679 /* FIXME: What are the a.out magic numbers for the i860? */
3680 internal_a
.magic
= 0;
3681 #define __A_MAGIC_SET__
3684 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
3685 #define __A_MAGIC_SET__
3688 #define __A_MAGIC_SET__
3689 internal_a
.magic
= PAGEMAGICBCS
;
3693 #define __A_MAGIC_SET__
3694 internal_a
.magic
= APOLLO_COFF_VERSION_NUMBER
;
3697 #if defined(M68) || defined(WE32K) || defined(M68K)
3698 #define __A_MAGIC_SET__
3700 internal_a
.magic
= LYNXCOFFMAGIC
;
3702 #if defined(TARG_AUX)
3703 internal_a
.magic
= (abfd
->flags
& D_PAGED
? PAGEMAGICPEXECPAGED
:
3704 abfd
->flags
& WP_TEXT
? PAGEMAGICPEXECSWAPPED
:
3705 PAGEMAGICEXECSWAPPED
);
3707 #if defined (PAGEMAGICPEXECPAGED)
3708 internal_a
.magic
= PAGEMAGICPEXECPAGED
;
3710 #endif /* TARG_AUX */
3712 #endif /* M68 || WE32K || M68K */
3715 #define __A_MAGIC_SET__
3716 internal_a
.magic
= ZMAGIC
;
3720 #define __A_MAGIC_SET__
3721 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
3724 #if defined MCORE_PE
3725 #define __A_MAGIC_SET__
3726 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
3730 #define __A_MAGIC_SET__
3732 internal_a
.magic
= LYNXCOFFMAGIC
;
3734 internal_a
.magic
= ZMAGIC
;
3739 #define __A_MAGIC_SET__
3740 internal_a
.magic
= ZMAGIC
;
3744 #define __A_MAGIC_SET__
3746 internal_a
.magic
= LYNXCOFFMAGIC
;
3751 #define __A_MAGIC_SET__
3752 internal_a
.magic
= (abfd
->flags
& D_PAGED
) ? RS6K_AOUTHDR_ZMAGIC
:
3753 (abfd
->flags
& WP_TEXT
) ? RS6K_AOUTHDR_NMAGIC
:
3754 RS6K_AOUTHDR_OMAGIC
;
3757 #if defined(SH) && defined(COFF_WITH_PE)
3758 #define __A_MAGIC_SET__
3759 internal_a
.magic
= SH_PE_MAGIC
;
3762 #if defined(MIPS) && defined(COFF_WITH_PE)
3763 #define __A_MAGIC_SET__
3764 internal_a
.magic
= MIPS_PE_MAGIC
;
3767 #ifndef __A_MAGIC_SET__
3768 #include "Your aouthdr magic number is not being set!"
3770 #undef __A_MAGIC_SET__
3774 /* FIXME: Does anybody ever set this to another value? */
3775 internal_a
.vstamp
= 0;
3777 /* Now should write relocs, strings, syms */
3778 obj_sym_filepos (abfd
) = sym_base
;
3780 if (bfd_get_symcount (abfd
) != 0)
3784 if (!coff_add_missing_symbols (abfd
))
3787 if (!coff_renumber_symbols (abfd
, &firstundef
))
3789 coff_mangle_symbols (abfd
);
3790 if (! coff_write_symbols (abfd
))
3792 if (! coff_write_linenumbers (abfd
))
3794 if (! coff_write_relocs (abfd
, firstundef
))
3797 #ifdef COFF_LONG_SECTION_NAMES
3798 else if (long_section_names
)
3800 /* If we have long section names we have to write out the string
3801 table even if there are no symbols. */
3802 if (! coff_write_symbols (abfd
))
3806 #ifdef COFF_IMAGE_WITH_PE
3808 else if ((abfd
->flags
& EXEC_P
) != 0)
3812 /* PowerPC PE appears to require that all executable files be
3813 rounded up to the page size. */
3816 BFD_ALIGN (sym_base
, COFF_PAGE_SIZE
) - 1,
3818 || bfd_write (&b
, 1, 1, abfd
) != 1)
3824 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
3825 backend linker, and obj_raw_syment_count is not valid until after
3826 coff_write_symbols is called. */
3827 if (obj_raw_syment_count (abfd
) != 0)
3829 internal_f
.f_symptr
= sym_base
;
3831 /* AIX appears to require that F_RELFLG not be set if there are
3832 local symbols but no relocations. */
3833 internal_f
.f_flags
&=~ F_RELFLG
;
3838 if (long_section_names
)
3839 internal_f
.f_symptr
= sym_base
;
3841 internal_f
.f_symptr
= 0;
3842 internal_f
.f_flags
|= F_LSYMS
;
3847 internal_a
.tsize
= bfd_get_section_size_before_reloc (text_sec
);
3848 internal_a
.text_start
= internal_a
.tsize
? text_sec
->vma
: 0;
3852 internal_a
.dsize
= bfd_get_section_size_before_reloc (data_sec
);
3853 internal_a
.data_start
= internal_a
.dsize
? data_sec
->vma
: 0;
3857 internal_a
.bsize
= bfd_get_section_size_before_reloc (bss_sec
);
3858 if (internal_a
.bsize
&& bss_sec
->vma
< internal_a
.data_start
)
3859 internal_a
.data_start
= bss_sec
->vma
;
3862 internal_a
.entry
= bfd_get_start_address (abfd
);
3863 internal_f
.f_nsyms
= obj_raw_syment_count (abfd
);
3866 if (xcoff_data (abfd
)->full_aouthdr
)
3869 asection
*loader_sec
;
3871 internal_a
.vstamp
= 1;
3873 internal_a
.o_snentry
= xcoff_data (abfd
)->snentry
;
3874 if (internal_a
.o_snentry
== 0)
3875 internal_a
.entry
= (bfd_vma
) -1;
3877 if (text_sec
!= NULL
)
3879 internal_a
.o_sntext
= text_sec
->target_index
;
3880 internal_a
.o_algntext
= bfd_get_section_alignment (abfd
, text_sec
);
3884 internal_a
.o_sntext
= 0;
3885 internal_a
.o_algntext
= 0;
3887 if (data_sec
!= NULL
)
3889 internal_a
.o_sndata
= data_sec
->target_index
;
3890 internal_a
.o_algndata
= bfd_get_section_alignment (abfd
, data_sec
);
3894 internal_a
.o_sndata
= 0;
3895 internal_a
.o_algndata
= 0;
3897 loader_sec
= bfd_get_section_by_name (abfd
, ".loader");
3898 if (loader_sec
!= NULL
)
3899 internal_a
.o_snloader
= loader_sec
->target_index
;
3901 internal_a
.o_snloader
= 0;
3902 if (bss_sec
!= NULL
)
3903 internal_a
.o_snbss
= bss_sec
->target_index
;
3905 internal_a
.o_snbss
= 0;
3907 toc
= xcoff_data (abfd
)->toc
;
3908 internal_a
.o_toc
= toc
;
3909 internal_a
.o_sntoc
= xcoff_data (abfd
)->sntoc
;
3911 internal_a
.o_modtype
= xcoff_data (abfd
)->modtype
;
3912 if (xcoff_data (abfd
)->cputype
!= -1)
3913 internal_a
.o_cputype
= xcoff_data (abfd
)->cputype
;
3916 switch (bfd_get_arch (abfd
))
3918 case bfd_arch_rs6000
:
3919 internal_a
.o_cputype
= 4;
3921 case bfd_arch_powerpc
:
3922 if (bfd_get_mach (abfd
) == 0)
3923 internal_a
.o_cputype
= 3;
3925 internal_a
.o_cputype
= 1;
3931 internal_a
.o_maxstack
= xcoff_data (abfd
)->maxstack
;
3932 internal_a
.o_maxdata
= xcoff_data (abfd
)->maxdata
;
3936 /* now write them */
3937 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
3942 bfd_size_type amount
;
3944 buff
= bfd_malloc (bfd_coff_filhsz (abfd
));
3948 coff_swap_filehdr_out (abfd
, (PTR
) & internal_f
, (PTR
) buff
);
3949 amount
= bfd_write ((PTR
) buff
, 1, bfd_coff_filhsz (abfd
), abfd
);
3953 if (amount
!= bfd_coff_filhsz (abfd
))
3957 if (abfd
->flags
& EXEC_P
)
3959 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
3960 include/coff/pe.h sets AOUTSZ == sizeof(PEAOUTHDR)) */
3962 bfd_size_type amount
;
3964 buff
= bfd_malloc (bfd_coff_aoutsz (abfd
));
3968 coff_swap_aouthdr_out (abfd
, (PTR
) & internal_a
, (PTR
) buff
);
3969 amount
= bfd_write ((PTR
) buff
, 1, bfd_coff_aoutsz (abfd
), abfd
);
3973 if (amount
!= bfd_coff_aoutsz (abfd
))
3982 /* XCOFF seems to always write at least a small a.out header. */
3983 coff_swap_aouthdr_out (abfd
, (PTR
) &internal_a
, (PTR
) &buff
);
3984 if (xcoff_data (abfd
)->full_aouthdr
)
3985 size
= bfd_coff_aoutsz (abfd
);
3987 size
= SMALL_AOUTSZ
;
3988 if (bfd_write ((PTR
) &buff
, 1, size
, abfd
) != size
)
3997 coff_set_section_contents (abfd
, section
, location
, offset
, count
)
4002 bfd_size_type count
;
4004 if (abfd
->output_has_begun
== false) /* set by bfd.c handler */
4006 if (! coff_compute_section_file_positions (abfd
))
4010 #if defined(_LIB) && !defined(TARG_AUX)
4012 /* The physical address field of a .lib section is used to hold the
4013 number of shared libraries in the section. This code counts the
4014 number of sections being written, and increments the lma field
4017 I have found no documentation on the contents of this section.
4018 Experimentation indicates that the section contains zero or more
4019 records, each of which has the following structure:
4021 - a (four byte) word holding the length of this record, in words,
4022 - a word that always seems to be set to "2",
4023 - the path to a shared library, null-terminated and then padded
4024 to a whole word boundary.
4026 bfd_assert calls have been added to alert if an attempt is made
4027 to write a section which doesn't follow these assumptions. The
4028 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4029 <robertl@arnet.com> (Thanks!).
4031 Gvran Uddeborg <gvran@uddeborg.pp.se> */
4033 if (strcmp (section
->name
, _LIB
) == 0)
4035 bfd_byte
*rec
, *recend
;
4037 rec
= (bfd_byte
*) location
;
4038 recend
= rec
+ count
;
4039 while (rec
< recend
)
4042 rec
+= bfd_get_32 (abfd
, rec
) * 4;
4045 BFD_ASSERT (rec
== recend
);
4050 /* Don't write out bss sections - one way to do this is to
4051 see if the filepos has not been set. */
4052 if (section
->filepos
== 0)
4055 if (bfd_seek (abfd
, (file_ptr
) (section
->filepos
+ offset
), SEEK_SET
) != 0)
4060 return (bfd_write (location
, 1, count
, abfd
) == count
) ? true : false;
4066 coff_close_and_cleanup (abfd
)
4069 if (!bfd_read_p (abfd
))
4070 switch (abfd
->format
)
4073 if (!_bfd_write_archive_contents (abfd
))
4077 if (!coff_write_object_contents (abfd
))
4081 bfd_set_error (bfd_error_invalid_operation
);
4085 /* We depend on bfd_close to free all the memory on the objalloc. */
4092 buy_and_read (abfd
, where
, seek_direction
, size
)
4098 PTR area
= (PTR
) bfd_alloc (abfd
, size
);
4101 if (bfd_seek (abfd
, where
, seek_direction
) != 0
4102 || bfd_read (area
, 1, size
, abfd
) != size
)
4105 } /* buy_and_read() */
4111 Creating the linenumber table is done by reading in the entire
4112 coff linenumber table, and creating another table for internal use.
4114 A coff linenumber table is structured so that each function
4115 is marked as having a line number of 0. Each line within the
4116 function is an offset from the first line in the function. The
4117 base of the line number information for the table is stored in
4118 the symbol associated with the function.
4120 Note: The PE format uses line number 0 for a flag indicating a
4123 The information is copied from the external to the internal
4124 table, and each symbol which marks a function is marked by
4127 How does this work ?
4132 coff_slurp_line_table (abfd
, asect
)
4136 LINENO
*native_lineno
;
4137 alent
*lineno_cache
;
4139 BFD_ASSERT (asect
->lineno
== (alent
*) NULL
);
4141 native_lineno
= (LINENO
*) buy_and_read (abfd
,
4142 asect
->line_filepos
,
4144 (size_t) (bfd_coff_linesz (abfd
) *
4145 asect
->lineno_count
));
4147 (alent
*) bfd_alloc (abfd
, (size_t) ((asect
->lineno_count
+ 1) * sizeof (alent
)));
4148 if (lineno_cache
== NULL
)
4152 unsigned int counter
= 0;
4153 alent
*cache_ptr
= lineno_cache
;
4154 LINENO
*src
= native_lineno
;
4156 while (counter
< asect
->lineno_count
)
4158 struct internal_lineno dst
;
4159 bfd_coff_swap_lineno_in (abfd
, src
, &dst
);
4160 cache_ptr
->line_number
= dst
.l_lnno
;
4162 if (cache_ptr
->line_number
== 0)
4166 coff_symbol_type
*sym
;
4169 symndx
= dst
.l_addr
.l_symndx
;
4171 || (unsigned long) symndx
>= obj_raw_syment_count (abfd
))
4173 (*_bfd_error_handler
)
4174 (_("%s: warning: illegal symbol index %ld in line numbers"),
4175 bfd_get_filename (abfd
), dst
.l_addr
.l_symndx
);
4179 /* FIXME: We should not be casting between ints and
4180 pointers like this. */
4181 sym
= ((coff_symbol_type
*)
4182 ((symndx
+ obj_raw_syments (abfd
))
4183 ->u
.syment
._n
._n_n
._n_zeroes
));
4184 cache_ptr
->u
.sym
= (asymbol
*) sym
;
4185 if (sym
->lineno
!= NULL
&& ! warned
)
4187 (*_bfd_error_handler
)
4188 (_("%s: warning: duplicate line number information for `%s'"),
4189 bfd_get_filename (abfd
),
4190 bfd_asymbol_name (&sym
->symbol
));
4192 sym
->lineno
= cache_ptr
;
4196 cache_ptr
->u
.offset
= dst
.l_addr
.l_paddr
4197 - bfd_section_vma (abfd
, asect
);
4198 } /* If no linenumber expect a symbol index */
4204 cache_ptr
->line_number
= 0;
4207 asect
->lineno
= lineno_cache
;
4208 /* FIXME, free native_lineno here, or use alloca or something. */
4212 /* Slurp in the symbol table, converting it to generic form. Note
4213 that if coff_relocate_section is defined, the linker will read
4214 symbols via coff_link_add_symbols, rather than via this routine. */
4217 coff_slurp_symbol_table (abfd
)
4220 combined_entry_type
*native_symbols
;
4221 coff_symbol_type
*cached_area
;
4222 unsigned int *table_ptr
;
4224 unsigned int number_of_symbols
= 0;
4226 if (obj_symbols (abfd
))
4229 /* Read in the symbol table */
4230 if ((native_symbols
= coff_get_normalized_symtab (abfd
)) == NULL
)
4235 /* Allocate enough room for all the symbols in cached form */
4236 cached_area
= ((coff_symbol_type
*)
4238 (obj_raw_syment_count (abfd
)
4239 * sizeof (coff_symbol_type
))));
4241 if (cached_area
== NULL
)
4243 table_ptr
= ((unsigned int *)
4245 (obj_raw_syment_count (abfd
)
4246 * sizeof (unsigned int))));
4248 if (table_ptr
== NULL
)
4252 coff_symbol_type
*dst
= cached_area
;
4253 unsigned int last_native_index
= obj_raw_syment_count (abfd
);
4254 unsigned int this_index
= 0;
4255 while (this_index
< last_native_index
)
4257 combined_entry_type
*src
= native_symbols
+ this_index
;
4258 table_ptr
[this_index
] = number_of_symbols
;
4259 dst
->symbol
.the_bfd
= abfd
;
4261 dst
->symbol
.name
= (char *) (src
->u
.syment
._n
._n_n
._n_offset
);
4262 /* We use the native name field to point to the cached field. */
4263 src
->u
.syment
._n
._n_n
._n_zeroes
= (long) dst
;
4264 dst
->symbol
.section
= coff_section_from_bfd_index (abfd
,
4265 src
->u
.syment
.n_scnum
);
4266 dst
->symbol
.flags
= 0;
4267 dst
->done_lineno
= false;
4269 switch (src
->u
.syment
.n_sclass
)
4274 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
4275 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
4276 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4278 /* Fall through to next case */
4286 case C_THUMBEXTFUNC
:
4292 case C_SYSTEM
: /* System Wide variable */
4295 /* In PE, 0x68 (104) denotes a section symbol */
4297 /* In PE, 0x69 (105) denotes a weak external symbol. */
4300 switch (coff_classify_symbol (abfd
, &src
->u
.syment
))
4302 case COFF_SYMBOL_GLOBAL
:
4303 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
4304 #if defined COFF_WITH_PE
4305 /* PE sets the symbol to a value relative to the
4306 start of the section. */
4307 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4309 dst
->symbol
.value
= (src
->u
.syment
.n_value
4310 - dst
->symbol
.section
->vma
);
4312 if (ISFCN ((src
->u
.syment
.n_type
)))
4314 /* A function ext does not go at the end of a
4316 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4320 case COFF_SYMBOL_COMMON
:
4321 dst
->symbol
.section
= bfd_com_section_ptr
;
4322 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4325 case COFF_SYMBOL_UNDEFINED
:
4326 dst
->symbol
.section
= bfd_und_section_ptr
;
4327 dst
->symbol
.value
= 0;
4330 case COFF_SYMBOL_PE_SECTION
:
4331 dst
->symbol
.flags
|= BSF_EXPORT
| BSF_SECTION_SYM
;
4332 dst
->symbol
.value
= 0;
4335 case COFF_SYMBOL_LOCAL
:
4336 dst
->symbol
.flags
= BSF_LOCAL
;
4337 #if defined COFF_WITH_PE
4338 /* PE sets the symbol to a value relative to the
4339 start of the section. */
4340 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4342 dst
->symbol
.value
= (src
->u
.syment
.n_value
4343 - dst
->symbol
.section
->vma
);
4345 if (ISFCN ((src
->u
.syment
.n_type
)))
4346 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4351 /* A symbol with a csect entry should not go at the end. */
4352 if (src
->u
.syment
.n_numaux
> 0)
4353 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
4357 if (src
->u
.syment
.n_sclass
== C_NT_WEAK
)
4358 dst
->symbol
.flags
= BSF_WEAK
;
4359 if (src
->u
.syment
.n_sclass
== C_SECTION
4360 && src
->u
.syment
.n_scnum
> 0)
4362 dst
->symbol
.flags
= BSF_LOCAL
;
4366 if (src
->u
.syment
.n_sclass
== C_WEAKEXT
)
4367 dst
->symbol
.flags
= BSF_WEAK
;
4371 case C_STAT
: /* static */
4373 case C_LEAFSTAT
: /* static leaf procedure */
4376 case C_THUMBSTAT
: /* Thumb static */
4377 case C_THUMBLABEL
: /* Thumb label */
4378 case C_THUMBSTATFUNC
:/* Thumb static function */
4380 case C_LABEL
: /* label */
4381 if (src
->u
.syment
.n_scnum
== N_DEBUG
)
4382 dst
->symbol
.flags
= BSF_DEBUGGING
;
4384 dst
->symbol
.flags
= BSF_LOCAL
;
4386 /* Base the value as an index from the base of the
4387 section, if there is one. */
4388 if (dst
->symbol
.section
)
4390 #if defined COFF_WITH_PE
4391 /* PE sets the symbol to a value relative to the
4392 start of the section. */
4393 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4395 dst
->symbol
.value
= (src
->u
.syment
.n_value
4396 - dst
->symbol
.section
->vma
);
4400 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4403 case C_MOS
: /* member of structure */
4404 case C_EOS
: /* end of structure */
4405 #ifdef NOTDEF /* C_AUTOARG has the same value */
4407 case C_GLBLREG
: /* A29k-specific storage class */
4410 case C_REGPARM
: /* register parameter */
4411 case C_REG
: /* register variable */
4412 /* C_AUTOARG conflictes with TI COFF C_UEXT */
4413 #if !defined (TIC80COFF) && !defined (TICOFF)
4415 case C_AUTOARG
: /* 960-specific storage class */
4418 case C_TPDEF
: /* type definition */
4420 case C_AUTO
: /* automatic variable */
4421 case C_FIELD
: /* bit field */
4422 case C_ENTAG
: /* enumeration tag */
4423 case C_MOE
: /* member of enumeration */
4424 case C_MOU
: /* member of union */
4425 case C_UNTAG
: /* union tag */
4426 dst
->symbol
.flags
= BSF_DEBUGGING
;
4427 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4430 case C_FILE
: /* file name */
4431 case C_STRTAG
: /* structure tag */
4446 dst
->symbol
.flags
= BSF_DEBUGGING
;
4447 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4451 case C_BINCL
: /* beginning of include file */
4452 case C_EINCL
: /* ending of include file */
4453 /* The value is actually a pointer into the line numbers
4454 of the file. We locate the line number entry, and
4455 set the section to the section which contains it, and
4456 the value to the index in that section. */
4460 dst
->symbol
.flags
= BSF_DEBUGGING
;
4461 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4462 if (sec
->line_filepos
<= (file_ptr
) src
->u
.syment
.n_value
4463 && ((file_ptr
) (sec
->line_filepos
4464 + sec
->lineno_count
* bfd_coff_linesz (abfd
))
4465 > (file_ptr
) src
->u
.syment
.n_value
))
4468 dst
->symbol
.value
= 0;
4471 dst
->symbol
.section
= sec
;
4472 dst
->symbol
.value
= ((src
->u
.syment
.n_value
4473 - sec
->line_filepos
)
4474 / bfd_coff_linesz (abfd
));
4481 dst
->symbol
.flags
= BSF_DEBUGGING
;
4483 /* The value is actually a symbol index. Save a pointer
4484 to the symbol instead of the index. FIXME: This
4485 should use a union. */
4486 src
->u
.syment
.n_value
=
4487 (long) (native_symbols
+ src
->u
.syment
.n_value
);
4488 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4493 case C_BLOCK
: /* ".bb" or ".eb" */
4494 case C_FCN
: /* ".bf" or ".ef" (or PE ".lf") */
4495 case C_EFCN
: /* physical end of function */
4496 #if defined COFF_WITH_PE
4497 /* PE sets the symbol to a value relative to the start
4499 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4500 if (strcmp (dst
->symbol
.name
, ".bf") != 0)
4502 /* PE uses funny values for .ef and .lf; don't
4504 dst
->symbol
.flags
= BSF_DEBUGGING
;
4507 dst
->symbol
.flags
= BSF_DEBUGGING
| BSF_DEBUGGING_RELOC
;
4509 /* Base the value as an index from the base of the
4511 dst
->symbol
.flags
= BSF_LOCAL
;
4512 dst
->symbol
.value
= (src
->u
.syment
.n_value
4513 - dst
->symbol
.section
->vma
);
4517 case C_STATLAB
: /* Static load time label */
4518 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4519 dst
->symbol
.flags
= BSF_GLOBAL
;
4523 /* PE DLLs sometimes have zeroed out symbols for some
4524 reason. Just ignore them without a warning. */
4525 if (src
->u
.syment
.n_type
== 0
4526 && src
->u
.syment
.n_value
== 0
4527 && src
->u
.syment
.n_scnum
== 0)
4530 case C_EXTDEF
: /* external definition */
4531 case C_ULABEL
: /* undefined label */
4532 case C_USTATIC
: /* undefined static */
4533 #ifndef COFF_WITH_PE
4534 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4535 class to represent a section symbol */
4536 case C_LINE
: /* line # reformatted as symbol table entry */
4537 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4538 case C_ALIAS
: /* duplicate tag */
4540 /* New storage classes for TI COFF */
4541 #if defined(TIC80COFF) || defined(TICOFF)
4542 case C_UEXT
: /* Tentative external definition */
4544 case C_EXTLAB
: /* External load time label */
4545 case C_HIDDEN
: /* ext symbol in dmert public lib */
4547 (*_bfd_error_handler
)
4548 (_("%s: Unrecognized storage class %d for %s symbol `%s'"),
4549 bfd_get_filename (abfd
), src
->u
.syment
.n_sclass
,
4550 dst
->symbol
.section
->name
, dst
->symbol
.name
);
4551 dst
->symbol
.flags
= BSF_DEBUGGING
;
4552 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4556 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4560 dst
->symbol
.udata
.i
= 0;
4561 dst
->lineno
= (alent
*) NULL
;
4562 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
4564 number_of_symbols
++;
4565 } /* walk the native symtab */
4566 } /* bfdize the native symtab */
4568 obj_symbols (abfd
) = cached_area
;
4569 obj_raw_syments (abfd
) = native_symbols
;
4571 bfd_get_symcount (abfd
) = number_of_symbols
;
4572 obj_convert (abfd
) = table_ptr
;
4573 /* Slurp the line tables for each section too */
4579 coff_slurp_line_table (abfd
, p
);
4584 } /* coff_slurp_symbol_table() */
4586 /* Classify a COFF symbol. A couple of targets have globally visible
4587 symbols which are not class C_EXT, and this handles those. It also
4588 recognizes some special PE cases. */
4590 static enum coff_symbol_classification
4591 coff_classify_symbol (abfd
, syment
)
4593 struct internal_syment
*syment
;
4595 /* FIXME: This partially duplicates the switch in
4596 coff_slurp_symbol_table. */
4597 switch (syment
->n_sclass
)
4606 case C_THUMBEXTFUNC
:
4614 if (syment
->n_scnum
== 0)
4616 if (syment
->n_value
== 0)
4617 return COFF_SYMBOL_UNDEFINED
;
4619 return COFF_SYMBOL_COMMON
;
4621 return COFF_SYMBOL_GLOBAL
;
4628 if (syment
->n_sclass
== C_STAT
)
4630 if (syment
->n_scnum
== 0)
4632 /* The Microsoft compiler sometimes generates these if a
4633 small static function is inlined every time it is used.
4634 The function is discarded, but the symbol table entry
4636 return COFF_SYMBOL_LOCAL
;
4639 #ifdef STRICT_PE_FORMAT
4640 /* This is correct for Microsoft generated objects, but it
4641 breaks gas generated objects. */
4643 if (syment
->n_value
== 0)
4646 char buf
[SYMNMLEN
+ 1];
4648 sec
= coff_section_from_bfd_index (abfd
, syment
->n_scnum
);
4650 && (strcmp (bfd_get_section_name (abfd
, sec
),
4651 _bfd_coff_internal_syment_name (abfd
, syment
, buf
))
4653 return COFF_SYMBOL_PE_SECTION
;
4657 return COFF_SYMBOL_LOCAL
;
4660 if (syment
->n_sclass
== C_SECTION
)
4662 /* In some cases in a DLL generated by the Microsoft linker, the
4663 n_value field will contain garbage. FIXME: This should
4664 probably be handled by the swapping function instead. */
4665 syment
->n_value
= 0;
4666 if (syment
->n_scnum
== 0)
4667 return COFF_SYMBOL_UNDEFINED
;
4668 return COFF_SYMBOL_PE_SECTION
;
4670 #endif /* COFF_WITH_PE */
4672 /* If it is not a global symbol, we presume it is a local symbol. */
4674 if (syment
->n_scnum
== 0)
4676 char buf
[SYMNMLEN
+ 1];
4678 (*_bfd_error_handler
)
4679 (_("warning: %s: local symbol `%s' has no section"),
4680 bfd_get_filename (abfd
),
4681 _bfd_coff_internal_syment_name (abfd
, syment
, buf
));
4684 return COFF_SYMBOL_LOCAL
;
4691 Coff relocations are easily transformed into the internal BFD form
4694 Reading a coff relocation table is done in the following stages:
4696 o Read the entire coff relocation table into memory.
4698 o Process each relocation in turn; first swap it from the
4699 external to the internal form.
4701 o Turn the symbol referenced in the relocation's symbol index
4702 into a pointer into the canonical symbol table.
4703 This table is the same as the one returned by a call to
4704 @code{bfd_canonicalize_symtab}. The back end will call that
4705 routine and save the result if a canonicalization hasn't been done.
4707 o The reloc index is turned into a pointer to a howto
4708 structure, in a back end specific way. For instance, the 386
4709 and 960 use the @code{r_type} to directly produce an index
4710 into a howto table vector; the 88k subtracts a number from the
4711 @code{r_type} field and creates an addend field.
4717 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
4719 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
4720 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
4721 coffsym = (obj_symbols (abfd) \
4722 + (cache_ptr->sym_ptr_ptr - symbols)); \
4724 coffsym = coff_symbol_from (abfd, ptr); \
4725 if (coffsym != (coff_symbol_type *) NULL \
4726 && coffsym->native->u.syment.n_scnum == 0) \
4727 cache_ptr->addend = 0; \
4728 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
4729 && ptr->section != (asection *) NULL) \
4730 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
4732 cache_ptr->addend = 0; \
4737 coff_slurp_reloc_table (abfd
, asect
, symbols
)
4742 RELOC
*native_relocs
;
4743 arelent
*reloc_cache
;
4748 if (asect
->relocation
)
4750 if (asect
->reloc_count
== 0)
4752 if (asect
->flags
& SEC_CONSTRUCTOR
)
4754 if (!coff_slurp_symbol_table (abfd
))
4757 (RELOC
*) buy_and_read (abfd
,
4760 (size_t) (bfd_coff_relsz (abfd
) *
4761 asect
->reloc_count
));
4762 reloc_cache
= (arelent
*)
4763 bfd_alloc (abfd
, (size_t) (asect
->reloc_count
* sizeof (arelent
)));
4765 if (reloc_cache
== NULL
)
4769 for (idx
= 0; idx
< asect
->reloc_count
; idx
++)
4771 struct internal_reloc dst
;
4772 struct external_reloc
*src
;
4773 #ifndef RELOC_PROCESSING
4777 cache_ptr
= reloc_cache
+ idx
;
4778 src
= native_relocs
+ idx
;
4780 coff_swap_reloc_in (abfd
, src
, &dst
);
4782 #ifdef RELOC_PROCESSING
4783 RELOC_PROCESSING (cache_ptr
, &dst
, symbols
, abfd
, asect
);
4785 cache_ptr
->address
= dst
.r_vaddr
;
4787 if (dst
.r_symndx
!= -1)
4789 if (dst
.r_symndx
< 0 || dst
.r_symndx
>= obj_conv_table_size (abfd
))
4791 (*_bfd_error_handler
)
4792 (_("%s: warning: illegal symbol index %ld in relocs"),
4793 bfd_get_filename (abfd
), dst
.r_symndx
);
4794 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
4799 cache_ptr
->sym_ptr_ptr
= (symbols
4800 + obj_convert (abfd
)[dst
.r_symndx
]);
4801 ptr
= *(cache_ptr
->sym_ptr_ptr
);
4806 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
4810 /* The symbols definitions that we have read in have been
4811 relocated as if their sections started at 0. But the offsets
4812 refering to the symbols in the raw data have not been
4813 modified, so we have to have a negative addend to compensate.
4815 Note that symbols which used to be common must be left alone */
4817 /* Calculate any reloc addend by looking at the symbol */
4818 CALC_ADDEND (abfd
, ptr
, dst
, cache_ptr
);
4820 cache_ptr
->address
-= asect
->vma
;
4821 /* !! cache_ptr->section = (asection *) NULL;*/
4823 /* Fill in the cache_ptr->howto field from dst.r_type */
4824 RTYPE2HOWTO (cache_ptr
, &dst
);
4825 #endif /* RELOC_PROCESSING */
4827 if (cache_ptr
->howto
== NULL
)
4829 (*_bfd_error_handler
)
4830 (_("%s: illegal relocation type %d at address 0x%lx"),
4831 bfd_get_filename (abfd
), dst
.r_type
, (long) dst
.r_vaddr
);
4832 bfd_set_error (bfd_error_bad_value
);
4837 asect
->relocation
= reloc_cache
;
4841 #ifndef coff_rtype_to_howto
4844 /* Get the howto structure for a reloc. This is only used if the file
4845 including this one defines coff_relocate_section to be
4846 _bfd_coff_generic_relocate_section, so it is OK if it does not
4847 always work. It is the responsibility of the including file to
4848 make sure it is reasonable if it is needed. */
4850 static reloc_howto_type
*coff_rtype_to_howto
4851 PARAMS ((bfd
*, asection
*, struct internal_reloc
*,
4852 struct coff_link_hash_entry
*, struct internal_syment
*,
4856 static reloc_howto_type
*
4857 coff_rtype_to_howto (abfd
, sec
, rel
, h
, sym
, addendp
)
4858 bfd
*abfd ATTRIBUTE_UNUSED
;
4859 asection
*sec ATTRIBUTE_UNUSED
;
4860 struct internal_reloc
*rel
;
4861 struct coff_link_hash_entry
*h ATTRIBUTE_UNUSED
;
4862 struct internal_syment
*sym ATTRIBUTE_UNUSED
;
4863 bfd_vma
*addendp ATTRIBUTE_UNUSED
;
4867 RTYPE2HOWTO (&genrel
, rel
);
4868 return genrel
.howto
;
4871 #else /* ! defined (RTYPE2HOWTO) */
4873 #define coff_rtype_to_howto NULL
4875 #endif /* ! defined (RTYPE2HOWTO) */
4876 #endif /* ! defined (coff_rtype_to_howto) */
4878 /* This is stupid. This function should be a boolean predicate. */
4880 coff_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
4886 arelent
*tblptr
= section
->relocation
;
4887 unsigned int count
= 0;
4890 if (section
->flags
& SEC_CONSTRUCTOR
)
4892 /* this section has relocs made up by us, they are not in the
4893 file, so take them out of their chain and place them into
4894 the data area provided */
4895 arelent_chain
*chain
= section
->constructor_chain
;
4896 for (count
= 0; count
< section
->reloc_count
; count
++)
4898 *relptr
++ = &chain
->relent
;
4899 chain
= chain
->next
;
4905 if (! coff_slurp_reloc_table (abfd
, section
, symbols
))
4908 tblptr
= section
->relocation
;
4910 for (; count
++ < section
->reloc_count
;)
4911 *relptr
++ = tblptr
++;
4916 return section
->reloc_count
;
4921 coff_sym_filepos (abfd
)
4924 return obj_sym_filepos (abfd
);
4928 #ifndef coff_reloc16_estimate
4929 #define coff_reloc16_estimate dummy_reloc16_estimate
4931 static int dummy_reloc16_estimate
4932 PARAMS ((bfd
*, asection
*, arelent
*, unsigned int,
4933 struct bfd_link_info
*));
4936 dummy_reloc16_estimate (abfd
, input_section
, reloc
, shrink
, link_info
)
4937 bfd
*abfd ATTRIBUTE_UNUSED
;
4938 asection
*input_section ATTRIBUTE_UNUSED
;
4939 arelent
*reloc ATTRIBUTE_UNUSED
;
4940 unsigned int shrink ATTRIBUTE_UNUSED
;
4941 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
4949 #ifndef coff_reloc16_extra_cases
4951 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
4953 /* This works even if abort is not declared in any header file. */
4955 static void dummy_reloc16_extra_cases
4956 PARAMS ((bfd
*, struct bfd_link_info
*, struct bfd_link_order
*, arelent
*,
4957 bfd_byte
*, unsigned int *, unsigned int *));
4960 dummy_reloc16_extra_cases (abfd
, link_info
, link_order
, reloc
, data
, src_ptr
,
4962 bfd
*abfd ATTRIBUTE_UNUSED
;
4963 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
4964 struct bfd_link_order
*link_order ATTRIBUTE_UNUSED
;
4965 arelent
*reloc ATTRIBUTE_UNUSED
;
4966 bfd_byte
*data ATTRIBUTE_UNUSED
;
4967 unsigned int *src_ptr ATTRIBUTE_UNUSED
;
4968 unsigned int *dst_ptr ATTRIBUTE_UNUSED
;
4974 /* If coff_relocate_section is defined, we can use the optimized COFF
4975 backend linker. Otherwise we must continue to use the old linker. */
4976 #ifdef coff_relocate_section
4977 #ifndef coff_bfd_link_hash_table_create
4978 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
4980 #ifndef coff_bfd_link_add_symbols
4981 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
4983 #ifndef coff_bfd_final_link
4984 #define coff_bfd_final_link _bfd_coff_final_link
4986 #else /* ! defined (coff_relocate_section) */
4987 #define coff_relocate_section NULL
4988 #ifndef coff_bfd_link_hash_table_create
4989 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
4991 #ifndef coff_bfd_link_add_symbols
4992 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
4994 #define coff_bfd_final_link _bfd_generic_final_link
4995 #endif /* ! defined (coff_relocate_section) */
4997 #define coff_bfd_link_split_section _bfd_generic_link_split_section
4999 #ifndef coff_start_final_link
5000 #define coff_start_final_link NULL
5003 #ifndef coff_adjust_symndx
5004 #define coff_adjust_symndx NULL
5007 #ifndef coff_link_add_one_symbol
5008 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5011 #ifndef coff_link_output_has_begun
5013 static boolean coff_link_output_has_begun
5014 PARAMS ((bfd
*, struct coff_final_link_info
*));
5017 coff_link_output_has_begun (abfd
, info
)
5019 struct coff_final_link_info
* info ATTRIBUTE_UNUSED
;
5021 return abfd
->output_has_begun
;
5025 #ifndef coff_final_link_postscript
5027 static boolean coff_final_link_postscript
5028 PARAMS ((bfd
*, struct coff_final_link_info
*));
5031 coff_final_link_postscript (abfd
, pfinfo
)
5032 bfd
* abfd ATTRIBUTE_UNUSED
;
5033 struct coff_final_link_info
* pfinfo ATTRIBUTE_UNUSED
;
5039 #ifndef coff_SWAP_aux_in
5040 #define coff_SWAP_aux_in coff_swap_aux_in
5042 #ifndef coff_SWAP_sym_in
5043 #define coff_SWAP_sym_in coff_swap_sym_in
5045 #ifndef coff_SWAP_lineno_in
5046 #define coff_SWAP_lineno_in coff_swap_lineno_in
5048 #ifndef coff_SWAP_aux_out
5049 #define coff_SWAP_aux_out coff_swap_aux_out
5051 #ifndef coff_SWAP_sym_out
5052 #define coff_SWAP_sym_out coff_swap_sym_out
5054 #ifndef coff_SWAP_lineno_out
5055 #define coff_SWAP_lineno_out coff_swap_lineno_out
5057 #ifndef coff_SWAP_reloc_out
5058 #define coff_SWAP_reloc_out coff_swap_reloc_out
5060 #ifndef coff_SWAP_filehdr_out
5061 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5063 #ifndef coff_SWAP_aouthdr_out
5064 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5066 #ifndef coff_SWAP_scnhdr_out
5067 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5069 #ifndef coff_SWAP_reloc_in
5070 #define coff_SWAP_reloc_in coff_swap_reloc_in
5072 #ifndef coff_SWAP_filehdr_in
5073 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5075 #ifndef coff_SWAP_aouthdr_in
5076 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5078 #ifndef coff_SWAP_scnhdr_in
5079 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5082 static const bfd_coff_backend_data bfd_coff_std_swap_table
=
5084 coff_SWAP_aux_in
, coff_SWAP_sym_in
, coff_SWAP_lineno_in
,
5085 coff_SWAP_aux_out
, coff_SWAP_sym_out
,
5086 coff_SWAP_lineno_out
, coff_SWAP_reloc_out
,
5087 coff_SWAP_filehdr_out
, coff_SWAP_aouthdr_out
,
5088 coff_SWAP_scnhdr_out
,
5089 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
, FILNMLEN
,
5090 #ifdef COFF_LONG_FILENAMES
5095 #ifdef COFF_LONG_SECTION_NAMES
5100 COFF_DEFAULT_SECTION_ALIGNMENT_POWER
,
5101 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5106 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5111 coff_SWAP_filehdr_in
, coff_SWAP_aouthdr_in
, coff_SWAP_scnhdr_in
,
5112 coff_SWAP_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
5113 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
5114 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
5115 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
5116 coff_classify_symbol
, coff_compute_section_file_positions
,
5117 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
5118 coff_adjust_symndx
, coff_link_add_one_symbol
,
5119 coff_link_output_has_begun
, coff_final_link_postscript
5122 #ifndef coff_close_and_cleanup
5123 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5126 #ifndef coff_bfd_free_cached_info
5127 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5130 #ifndef coff_get_section_contents
5131 #define coff_get_section_contents _bfd_generic_get_section_contents
5134 #ifndef coff_bfd_copy_private_symbol_data
5135 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5138 #ifndef coff_bfd_copy_private_section_data
5139 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5142 #ifndef coff_bfd_copy_private_bfd_data
5143 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5146 #ifndef coff_bfd_merge_private_bfd_data
5147 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5150 #ifndef coff_bfd_set_private_flags
5151 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5154 #ifndef coff_bfd_print_private_bfd_data
5155 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5158 #ifndef coff_bfd_is_local_label_name
5159 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5162 #ifndef coff_read_minisymbols
5163 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5166 #ifndef coff_minisymbol_to_symbol
5167 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5170 /* The reloc lookup routine must be supplied by each individual COFF
5172 #ifndef coff_bfd_reloc_type_lookup
5173 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5176 #ifndef coff_bfd_get_relocated_section_contents
5177 #define coff_bfd_get_relocated_section_contents \
5178 bfd_generic_get_relocated_section_contents
5181 #ifndef coff_bfd_relax_section
5182 #define coff_bfd_relax_section bfd_generic_relax_section
5185 #ifndef coff_bfd_gc_sections
5186 #define coff_bfd_gc_sections bfd_generic_gc_sections
5189 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5190 const bfd_target VAR = \
5193 bfd_target_coff_flavour, \
5194 BFD_ENDIAN_BIG, /* data byte order is big */ \
5195 BFD_ENDIAN_BIG, /* header byte order is big */ \
5196 /* object flags */ \
5197 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5198 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5199 /* section flags */ \
5200 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5201 UNDER, /* leading symbol underscore */ \
5202 '/', /* ar_pad_char */ \
5203 15, /* ar_max_namelen */ \
5205 /* Data conversion functions. */ \
5206 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5207 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5208 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5210 /* Header conversion functions. */ \
5211 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5212 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5213 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5215 /* bfd_check_format */ \
5216 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5217 _bfd_dummy_target }, \
5218 /* bfd_set_format */ \
5219 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5220 /* bfd_write_contents */ \
5221 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5224 BFD_JUMP_TABLE_GENERIC (coff), \
5225 BFD_JUMP_TABLE_COPY (coff), \
5226 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5227 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5228 BFD_JUMP_TABLE_SYMBOLS (coff), \
5229 BFD_JUMP_TABLE_RELOCS (coff), \
5230 BFD_JUMP_TABLE_WRITE (coff), \
5231 BFD_JUMP_TABLE_LINK (coff), \
5232 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5239 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5240 const bfd_target VAR = \
5243 bfd_target_coff_flavour, \
5244 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5245 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5246 /* object flags */ \
5247 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5248 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5249 /* section flags */ \
5250 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5251 UNDER, /* leading symbol underscore */ \
5252 '/', /* ar_pad_char */ \
5253 15, /* ar_max_namelen */ \
5255 /* Data conversion functions. */ \
5256 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5257 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5258 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5259 /* Header conversion functions. */ \
5260 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5261 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5262 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5263 /* bfd_check_format */ \
5264 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5265 _bfd_dummy_target }, \
5266 /* bfd_set_format */ \
5267 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5268 /* bfd_write_contents */ \
5269 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5272 BFD_JUMP_TABLE_GENERIC (coff), \
5273 BFD_JUMP_TABLE_COPY (coff), \
5274 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5275 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5276 BFD_JUMP_TABLE_SYMBOLS (coff), \
5277 BFD_JUMP_TABLE_RELOCS (coff), \
5278 BFD_JUMP_TABLE_WRITE (coff), \
5279 BFD_JUMP_TABLE_LINK (coff), \
5280 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \