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.
178 The symbol table is massaged once again, this time to create
179 the canonical table used by the BFD application. Each symbol
180 is inspected in turn, and a decision made (using the
181 @code{sclass} field) about the various flags to set in the
182 @code{asymbol}. @xref{Symbols}. The generated canonical table
183 shares strings with the hidden internal symbol table.
185 Any linenumbers are read from the coff file too, and attached
186 to the symbols which own the functions the linenumbers belong to.
191 Writing a symbol to a coff file which didn't come from a coff
192 file will lose any debugging information. The @code{asymbol}
193 structure remembers the BFD from which the symbol was taken, and on
194 output the back end makes sure that the same destination target as
195 source target is present.
197 When the symbols have come from a coff file then all the
198 debugging information is preserved.
200 Symbol tables are provided for writing to the back end in a
201 vector of pointers to pointers. This allows applications like
202 the linker to accumulate and output large symbol tables
203 without having to do too much byte copying.
205 This function runs through the provided symbol table and
206 patches each symbol marked as a file place holder
207 (@code{C_FILE}) to point to the next file place holder in the
208 list. It also marks each @code{offset} field in the list with
209 the offset from the first symbol of the current symbol.
211 Another function of this procedure is to turn the canonical
212 value form of BFD into the form used by coff. Internally, BFD
213 expects symbol values to be offsets from a section base; so a
214 symbol physically at 0x120, but in a section starting at
215 0x100, would have the value 0x20. Coff expects symbols to
216 contain their final value, so symbols have their values
217 changed at this point to reflect their sum with their owning
218 section. This transformation uses the
219 <<output_section>> field of the @code{asymbol}'s
220 @code{asection} @xref{Sections}.
222 o <<coff_mangle_symbols>>
224 This routine runs though the provided symbol table and uses
225 the offsets generated by the previous pass and the pointers
226 generated when the symbol table was read in to create the
227 structured hierachy required by coff. It changes each pointer
228 to a symbol into the index into the symbol table of the asymbol.
230 o <<coff_write_symbols>>
232 This routine runs through the symbol table and patches up the
233 symbols from their internal form into the coff way, calls the
234 bit twiddlers, and writes out the table to the file.
243 The hidden information for an <<asymbol>> is described in a
244 <<combined_entry_type>>:
248 .typedef struct coff_ptr_struct
251 . {* Remembers the offset from the first symbol in the file for
252 . this symbol. Generated by coff_renumber_symbols. *}
253 .unsigned int offset;
255 . {* Should the value of this symbol be renumbered. Used for
256 . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
257 .unsigned int fix_value : 1;
259 . {* Should the tag field of this symbol be renumbered.
260 . Created by coff_pointerize_aux. *}
261 .unsigned int fix_tag : 1;
263 . {* Should the endidx field of this symbol be renumbered.
264 . Created by coff_pointerize_aux. *}
265 .unsigned int fix_end : 1;
267 . {* Should the x_csect.x_scnlen field be renumbered.
268 . Created by coff_pointerize_aux. *}
269 .unsigned int fix_scnlen : 1;
271 . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
272 . index into the line number entries. Set by
273 . coff_slurp_symbol_table. *}
274 .unsigned int fix_line : 1;
276 . {* The container for the symbol structure as read and translated
280 . union internal_auxent auxent;
281 . struct internal_syment syment;
283 .} combined_entry_type;
286 .{* Each canonical asymbol really looks like this: *}
288 .typedef struct coff_symbol_struct
290 . {* The actual symbol which the rest of BFD works with *}
293 . {* A pointer to the hidden information for this symbol *}
294 .combined_entry_type *native;
296 . {* A pointer to the linenumber information for this symbol *}
297 .struct lineno_cache_entry *lineno;
299 . {* Have the line numbers been relocated yet ? *}
300 .boolean done_lineno;
308 #include "coffswap.h"
311 #define STRING_SIZE_SIZE (4)
313 static long sec_to_styp_flags
PARAMS ((const char *, flagword
));
314 static flagword styp_to_sec_flags
315 PARAMS ((bfd
*, PTR
, const char *, asection
*));
316 static boolean coff_bad_format_hook
PARAMS ((bfd
*, PTR
));
317 static void coff_set_custom_section_alignment
318 PARAMS ((bfd
*, asection
*, const struct coff_section_alignment_entry
*,
319 const unsigned int));
320 static boolean coff_new_section_hook
PARAMS ((bfd
*, asection
*));
321 static boolean coff_set_arch_mach_hook
PARAMS ((bfd
*, PTR
));
322 static boolean coff_write_relocs
PARAMS ((bfd
*, int));
323 static boolean coff_set_flags
324 PARAMS ((bfd
*, unsigned int *, unsigned short *));
325 static boolean coff_set_arch_mach
326 PARAMS ((bfd
*, enum bfd_architecture
, unsigned long));
327 static boolean coff_compute_section_file_positions
PARAMS ((bfd
*));
328 static boolean coff_write_object_contents
PARAMS ((bfd
*));
329 static boolean coff_set_section_contents
330 PARAMS ((bfd
*, asection
*, PTR
, file_ptr
, bfd_size_type
));
331 static PTR buy_and_read
PARAMS ((bfd
*, file_ptr
, int, size_t));
332 static boolean coff_slurp_line_table
PARAMS ((bfd
*, asection
*));
333 static boolean coff_slurp_symbol_table
PARAMS ((bfd
*));
334 static enum coff_symbol_classification coff_classify_symbol
335 PARAMS ((bfd
*, struct internal_syment
*));
336 static boolean coff_slurp_reloc_table
PARAMS ((bfd
*, asection
*, asymbol
**));
337 static long coff_canonicalize_reloc
338 PARAMS ((bfd
*, asection
*, arelent
**, asymbol
**));
339 #ifndef coff_mkobject_hook
340 static PTR coff_mkobject_hook
PARAMS ((bfd
*, PTR
, PTR
));
343 /* void warning(); */
345 /* Return a word with STYP_* (scnhdr.s_flags) flags set to represent
346 the incoming SEC_* flags. The inverse of this function is
347 styp_to_sec_flags(). NOTE: If you add to/change this routine, you
348 should probably mirror the changes in styp_to_sec_flags(). */
352 /* Macros for setting debugging flags. */
354 #define STYP_XCOFF_DEBUG STYP_DEBUG
356 #define STYP_XCOFF_DEBUG STYP_INFO
359 #ifdef COFF_ALIGN_IN_S_FLAGS
360 #define STYP_DEBUG_INFO STYP_DSECT
362 #define STYP_DEBUG_INFO STYP_INFO
366 sec_to_styp_flags (sec_name
, sec_flags
)
367 CONST
char *sec_name
;
372 if (!strcmp (sec_name
, _TEXT
))
374 styp_flags
= STYP_TEXT
;
376 else if (!strcmp (sec_name
, _DATA
))
378 styp_flags
= STYP_DATA
;
380 else if (!strcmp (sec_name
, _BSS
))
382 styp_flags
= STYP_BSS
;
385 else if (!strcmp (sec_name
, _COMMENT
))
387 styp_flags
= STYP_INFO
;
388 #endif /* _COMMENT */
391 else if (!strcmp (sec_name
, _LIB
))
393 styp_flags
= STYP_LIB
;
397 else if (!strcmp (sec_name
, _LIT
))
399 styp_flags
= STYP_LIT
;
402 else if (!strncmp (sec_name
, ".debug", 6))
404 /* Handle the XCOFF debug section and DWARF2 debug sections. */
406 styp_flags
= STYP_XCOFF_DEBUG
;
408 styp_flags
= STYP_DEBUG_INFO
;
410 else if (!strncmp (sec_name
, ".stab", 5))
412 styp_flags
= STYP_DEBUG_INFO
;
414 #ifdef COFF_LONG_SECTION_NAMES
415 else if (!strncmp (sec_name
, ".gnu.linkonce.wi.", 17))
417 styp_flags
= STYP_DEBUG_INFO
;
421 else if (!strcmp (sec_name
, _PAD
))
423 styp_flags
= STYP_PAD
;
425 else if (!strcmp (sec_name
, _LOADER
))
427 styp_flags
= STYP_LOADER
;
430 /* Try and figure out what it should be */
431 else if (sec_flags
& SEC_CODE
)
433 styp_flags
= STYP_TEXT
;
435 else if (sec_flags
& SEC_DATA
)
437 styp_flags
= STYP_DATA
;
439 else if (sec_flags
& SEC_READONLY
)
441 #ifdef STYP_LIT /* 29k readonly text/data section */
442 styp_flags
= STYP_LIT
;
444 styp_flags
= STYP_TEXT
;
445 #endif /* STYP_LIT */
447 else if (sec_flags
& SEC_LOAD
)
449 styp_flags
= STYP_TEXT
;
451 else if (sec_flags
& SEC_ALLOC
)
453 styp_flags
= STYP_BSS
;
457 if (sec_flags
& SEC_CLINK
)
458 styp_flags
|= STYP_CLINK
;
462 if (sec_flags
& SEC_BLOCK
)
463 styp_flags
|= STYP_BLOCK
;
467 if ((sec_flags
& (SEC_NEVER_LOAD
| SEC_COFF_SHARED_LIBRARY
)) != 0)
468 styp_flags
|= STYP_NOLOAD
;
474 #else /* COFF_WITH_PE */
476 /* The PE version; see above for the general comments. The non-PE
477 case seems to be more guessing, and breaks PE format; specifically,
478 .rdata is readonly, but it sure ain't text. Really, all this
479 should be set up properly in gas (or whatever assembler is in use),
480 and honor whatever objcopy/strip, etc. sent us as input. */
483 sec_to_styp_flags (sec_name
, sec_flags
)
484 const char *sec_name ATTRIBUTE_UNUSED
;
489 /* caution: there are at least three groups of symbols that have
490 very similar bits and meanings: IMAGE_SCN*, SEC_*, and STYP_*.
491 SEC_* are the BFD internal flags, used for generic BFD
492 information. STYP_* are the COFF section flags which appear in
493 COFF files. IMAGE_SCN_* are the PE section flags which appear in
494 PE files. The STYP_* flags and the IMAGE_SCN_* flags overlap,
495 but there are more IMAGE_SCN_* flags. */
500 if ((sec_flags
& SEC_CODE
) != 0)
501 styp_flags
|= IMAGE_SCN_CNT_CODE
;
502 if ((sec_flags
& SEC_DATA
) != 0)
503 styp_flags
|= IMAGE_SCN_CNT_INITIALIZED_DATA
;
504 if ((sec_flags
& SEC_ALLOC
) != 0 && (sec_flags
& SEC_LOAD
) == 0)
505 styp_flags
|= IMAGE_SCN_CNT_UNINITIALIZED_DATA
; /* ==STYP_BSS */
507 /* skip CONSTRUCTOR */
510 if ((sec_flags
& (SEC_NEVER_LOAD
| SEC_COFF_SHARED_LIBRARY
)) != 0)
511 styp_flags
|= STYP_NOLOAD
;
513 if ((sec_flags
& SEC_IS_COMMON
) != 0)
514 styp_flags
|= IMAGE_SCN_LNK_COMDAT
;
515 if ((sec_flags
& SEC_DEBUGGING
) != 0)
516 styp_flags
|= IMAGE_SCN_MEM_DISCARDABLE
;
517 if ((sec_flags
& SEC_EXCLUDE
) != 0)
518 styp_flags
|= IMAGE_SCN_LNK_REMOVE
;
519 if ((sec_flags
& SEC_NEVER_LOAD
) != 0)
520 styp_flags
|= IMAGE_SCN_LNK_REMOVE
;
523 if (sec_flags
& SEC_LINK_ONCE
)
524 styp_flags
|= IMAGE_SCN_LNK_COMDAT
;
525 /* skip LINK_DUPLICATES */
526 /* skip LINKER_CREATED */
528 /* For now, the read/write bits are mapped onto SEC_READONLY, even
529 though the semantics don't quite match. The bits from the input
530 are retained in pei_section_data(abfd, section)->pe_flags */
532 styp_flags
|= IMAGE_SCN_MEM_READ
; /* always readable. */
533 if ((sec_flags
& SEC_READONLY
) == 0)
534 styp_flags
|= IMAGE_SCN_MEM_WRITE
; /* Invert READONLY for write */
535 if (sec_flags
& SEC_CODE
)
536 styp_flags
|= IMAGE_SCN_MEM_EXECUTE
; /* CODE->EXECUTE */
537 if (sec_flags
& SEC_SHARED
)
538 styp_flags
|= IMAGE_SCN_MEM_SHARED
; /* Shared remains meaningful */
543 #endif /* COFF_WITH_PE */
545 /* Return a word with SEC_* flags set to represent the incoming STYP_*
546 flags (from scnhdr.s_flags). The inverse of this function is
547 sec_to_styp_flags(). NOTE: If you add to/change this routine, you
548 should probably mirror the changes in sec_to_styp_flags(). */
553 styp_to_sec_flags (abfd
, hdr
, name
, section
)
554 bfd
*abfd ATTRIBUTE_UNUSED
;
557 asection
*section ATTRIBUTE_UNUSED
;
559 struct internal_scnhdr
*internal_s
= (struct internal_scnhdr
*) hdr
;
560 long styp_flags
= internal_s
->s_flags
;
561 flagword sec_flags
= 0;
564 if (styp_flags
& STYP_BLOCK
)
565 sec_flags
|= SEC_BLOCK
;
569 if (styp_flags
& STYP_CLINK
)
570 sec_flags
|= SEC_CLINK
;
574 if (styp_flags
& STYP_NOLOAD
)
576 sec_flags
|= SEC_NEVER_LOAD
;
578 #endif /* STYP_NOLOAD */
580 /* For 386 COFF, at least, an unloadable text or data section is
581 actually a shared library section. */
582 if (styp_flags
& STYP_TEXT
)
584 if (sec_flags
& SEC_NEVER_LOAD
)
585 sec_flags
|= SEC_CODE
| SEC_COFF_SHARED_LIBRARY
;
587 sec_flags
|= SEC_CODE
| SEC_LOAD
| SEC_ALLOC
;
589 else if (styp_flags
& STYP_DATA
)
591 if (sec_flags
& SEC_NEVER_LOAD
)
592 sec_flags
|= SEC_DATA
| SEC_COFF_SHARED_LIBRARY
;
594 sec_flags
|= SEC_DATA
| SEC_LOAD
| SEC_ALLOC
;
596 else if (styp_flags
& STYP_BSS
)
598 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
599 if (sec_flags
& SEC_NEVER_LOAD
)
600 sec_flags
|= SEC_ALLOC
| SEC_COFF_SHARED_LIBRARY
;
603 sec_flags
|= SEC_ALLOC
;
605 else if (styp_flags
& STYP_INFO
)
607 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
608 defined. coff_compute_section_file_positions uses
609 COFF_PAGE_SIZE to ensure that the low order bits of the
610 section VMA and the file offset match. If we don't know
611 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
612 and demand page loading of the file will fail. */
613 #if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS)
614 sec_flags
|= SEC_DEBUGGING
;
617 else if (styp_flags
& STYP_PAD
)
621 else if (strcmp (name
, _TEXT
) == 0)
623 if (sec_flags
& SEC_NEVER_LOAD
)
624 sec_flags
|= SEC_CODE
| SEC_COFF_SHARED_LIBRARY
;
626 sec_flags
|= SEC_CODE
| SEC_LOAD
| SEC_ALLOC
;
628 else if (strcmp (name
, _DATA
) == 0)
630 if (sec_flags
& SEC_NEVER_LOAD
)
631 sec_flags
|= SEC_DATA
| SEC_COFF_SHARED_LIBRARY
;
633 sec_flags
|= SEC_DATA
| SEC_LOAD
| SEC_ALLOC
;
635 else if (strcmp (name
, _BSS
) == 0)
637 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
638 if (sec_flags
& SEC_NEVER_LOAD
)
639 sec_flags
|= SEC_ALLOC
| SEC_COFF_SHARED_LIBRARY
;
642 sec_flags
|= SEC_ALLOC
;
644 else if (strncmp (name
, ".debug", 6) == 0
646 || strcmp (name
, _COMMENT
) == 0
648 #ifdef COFF_LONG_SECTION_NAMES
649 || strncmp (name
, ".gnu.linkonce.wi.", 17) == 0
651 || strncmp (name
, ".stab", 5) == 0)
653 #ifdef COFF_PAGE_SIZE
654 sec_flags
|= SEC_DEBUGGING
;
658 else if (strcmp (name
, _LIB
) == 0)
662 else if (strcmp (name
, _LIT
) == 0)
664 sec_flags
= SEC_LOAD
| SEC_ALLOC
| SEC_READONLY
;
669 sec_flags
|= SEC_ALLOC
| SEC_LOAD
;
672 #ifdef STYP_LIT /* A29k readonly text/data section type */
673 if ((styp_flags
& STYP_LIT
) == STYP_LIT
)
675 sec_flags
= (SEC_LOAD
| SEC_ALLOC
| SEC_READONLY
);
677 #endif /* STYP_LIT */
678 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
679 if (styp_flags
& STYP_OTHER_LOAD
)
681 sec_flags
= (SEC_LOAD
| SEC_ALLOC
);
683 #endif /* STYP_SDATA */
685 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
686 /* As a GNU extension, if the name begins with .gnu.linkonce, we
687 only link a single copy of the section. This is used to support
688 g++. g++ will emit each template expansion in its own section.
689 The symbols will be defined as weak, so that multiple definitions
690 are permitted. The GNU linker extension is to actually discard
691 all but one of the sections. */
692 if (strncmp (name
, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
693 sec_flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
699 #else /* COFF_WITH_PE */
701 /* The PE version; see above for the general comments.
703 Since to set the SEC_LINK_ONCE and associated flags, we have to
704 look at the symbol table anyway, we return the symbol table index
705 of the symbol being used as the COMDAT symbol. This is admittedly
706 ugly, but there's really nowhere else that we have access to the
707 required information. FIXME: Is the COMDAT symbol index used for
708 any purpose other than objdump? */
711 styp_to_sec_flags (abfd
, hdr
, name
, section
)
712 bfd
*abfd ATTRIBUTE_UNUSED
;
717 struct internal_scnhdr
*internal_s
= (struct internal_scnhdr
*) hdr
;
718 long styp_flags
= internal_s
->s_flags
;
719 flagword sec_flags
= 0;
721 if (styp_flags
& STYP_DSECT
)
722 abort (); /* Don't know what to do */
723 #ifdef SEC_NEVER_LOAD
724 if (styp_flags
& STYP_NOLOAD
)
725 sec_flags
|= SEC_NEVER_LOAD
;
727 if (styp_flags
& STYP_GROUP
)
728 abort (); /* Don't know what to do */
729 /* skip IMAGE_SCN_TYPE_NO_PAD */
730 if (styp_flags
& STYP_COPY
)
731 abort (); /* Don't know what to do */
732 if (styp_flags
& IMAGE_SCN_CNT_CODE
)
733 sec_flags
|= SEC_CODE
| SEC_ALLOC
| SEC_LOAD
;
734 if (styp_flags
& IMAGE_SCN_CNT_INITIALIZED_DATA
)
735 sec_flags
|= SEC_DATA
| SEC_ALLOC
| SEC_LOAD
;
736 if (styp_flags
& IMAGE_SCN_CNT_UNINITIALIZED_DATA
)
737 sec_flags
|= SEC_ALLOC
;
738 if (styp_flags
& IMAGE_SCN_LNK_OTHER
)
739 abort (); /* Don't know what to do */
740 if (styp_flags
& IMAGE_SCN_LNK_INFO
)
742 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
743 defined. coff_compute_section_file_positions uses
744 COFF_PAGE_SIZE to ensure that the low order bits of the
745 section VMA and the file offset match. If we don't know
746 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
747 and demand page loading of the file will fail. */
748 #ifdef COFF_PAGE_SIZE
749 sec_flags
|= SEC_DEBUGGING
;
752 if (styp_flags
& STYP_OVER
)
753 abort (); /* Don't know what to do */
754 if (styp_flags
& IMAGE_SCN_LNK_REMOVE
)
755 sec_flags
|= SEC_EXCLUDE
;
757 if (styp_flags
& IMAGE_SCN_MEM_SHARED
)
758 sec_flags
|= SEC_SHARED
;
759 /* COMDAT: see below */
760 if (styp_flags
& IMAGE_SCN_MEM_DISCARDABLE
)
761 sec_flags
|= SEC_DEBUGGING
;
762 if (styp_flags
& IMAGE_SCN_MEM_NOT_CACHED
)
763 abort ();/* Don't know what to do */
764 if (styp_flags
& IMAGE_SCN_MEM_NOT_PAGED
)
765 abort (); /* Don't know what to do */
767 /* We infer from the distinct read/write/execute bits the settings
768 of some of the bfd flags; the actual values, should we need them,
769 are also in pei_section_data (abfd, section)->pe_flags. */
771 if (styp_flags
& IMAGE_SCN_MEM_EXECUTE
)
772 sec_flags
|= SEC_CODE
; /* Probably redundant */
773 /* IMAGE_SCN_MEM_READ is simply ignored, assuming it always to be true. */
774 if ((styp_flags
& IMAGE_SCN_MEM_WRITE
) == 0)
775 sec_flags
|= SEC_READONLY
;
777 /* COMDAT gets very special treatment. */
778 if (styp_flags
& IMAGE_SCN_LNK_COMDAT
)
780 sec_flags
|= SEC_LINK_ONCE
;
782 /* Unfortunately, the PE format stores essential information in
783 the symbol table, of all places. We need to extract that
784 information now, so that objdump and the linker will know how
785 to handle the section without worrying about the symbols. We
786 can't call slurp_symtab, because the linker doesn't want the
789 /* COMDAT sections are special. The first symbol is the section
790 symbol, which tells what kind of COMDAT section it is. The
791 second symbol is the "comdat symbol" - the one with the
792 unique name. GNU uses the section symbol for the unique
793 name; MS uses ".text" for every comdat section. Sigh. - DJ */
795 /* This is not mirrored in sec_to_styp_flags(), but there
796 doesn't seem to be a need to, either, and it would at best be
799 if (_bfd_coff_get_external_symbols (abfd
))
801 bfd_byte
*esymstart
, *esym
, *esymend
;
803 char *target_name
= NULL
;
805 esymstart
= esym
= (bfd_byte
*) obj_coff_external_syms (abfd
);
806 esymend
= esym
+ obj_raw_syment_count (abfd
) * bfd_coff_symesz (abfd
);
808 while (esym
< esymend
)
810 struct internal_syment isym
;
811 char buf
[SYMNMLEN
+ 1];
814 bfd_coff_swap_sym_in (abfd
, (PTR
) esym
, (PTR
) &isym
);
816 if (sizeof (internal_s
->s_name
) > SYMNMLEN
)
818 /* This case implies that the matching symbol name
819 will be in the string table. */
823 if (isym
.n_scnum
== section
->target_index
)
825 /* According to the MSVC documentation, the first
826 TWO entries with the section # are both of
827 interest to us. The first one is the "section
828 symbol" (section name). The second is the comdat
829 symbol name. Here, we've found the first
830 qualifying entry; we distinguish it from the
831 second with a state flag.
833 In the case of gas-generated (at least until that
834 is fixed) .o files, it isn't necessarily the
835 second one. It may be some other later symbol.
837 Since gas also doesn't follow MS conventions and
838 emits the section similar to .text$<name>, where
839 <something> is the name we're looking for, we
840 distinguish the two as follows:
842 If the section name is simply a section name (no
843 $) we presume it's MS-generated, and look at
844 precisely the second symbol for the comdat name.
845 If the section name has a $, we assume it's
846 gas-generated, and look for <something> (whatever
847 follows the $) as the comdat symbol. */
849 /* All 3 branches use this */
850 symname
= _bfd_coff_internal_syment_name (abfd
, &isym
, buf
);
859 /* The first time we've seen the symbol. */
860 union internal_auxent aux
;
864 /* If it isn't the stuff we're expecting, die;
865 The MS documentation is vague, but it
866 appears that the second entry serves BOTH
867 as the comdat symbol and the defining
868 symbol record (either C_STAT or C_EXT,
869 possibly with an aux entry with debug
870 information if it's a function.) It
871 appears the only way to find the second one
872 is to count. (On Intel, they appear to be
873 adjacent, but on Alpha, they have been
876 Here, we think we've found the first one,
877 but there's some checking we can do to be
880 if (! (isym
.n_sclass
== C_STAT
881 && isym
.n_type
== T_NULL
882 && isym
.n_value
== 0))
885 /* FIXME LATER: MSVC generates section names
886 like .text for comdats. Gas generates
887 names like .text$foo__Fv (in the case of a
888 function). See comment above for more. */
890 if (strcmp (name
, symname
) != 0)
893 /* This is the section symbol. */
895 bfd_coff_swap_aux_in (abfd
, (PTR
) (esym
+ bfd_coff_symesz (abfd
)),
896 isym
.n_type
, isym
.n_sclass
,
897 0, isym
.n_numaux
, (PTR
) &aux
);
899 target_name
= strchr (name
, '$');
900 if (target_name
!= NULL
)
908 /* FIXME: Microsoft uses NODUPLICATES and
909 ASSOCIATIVE, but gnu uses ANY and
910 SAME_SIZE. Unfortunately, gnu doesn't do
911 the comdat symbols right. So, until we can
912 fix it to do the right thing, we are
913 temporarily disabling comdats for the MS
914 types (they're used in DLLs and C++, but we
915 don't support *their* C++ libraries anyway
918 /* Cygwin does not follow the MS style, and
919 uses ANY and SAME_SIZE where NODUPLICATES
920 and ASSOCIATIVE should be used. For
921 Interix, we just do the right thing up
924 switch (aux
.x_scn
.x_comdat
)
926 case IMAGE_COMDAT_SELECT_NODUPLICATES
:
927 #ifdef STRICT_PE_FORMAT
928 sec_flags
|= SEC_LINK_DUPLICATES_ONE_ONLY
;
930 sec_flags
&= ~SEC_LINK_ONCE
;
934 case IMAGE_COMDAT_SELECT_ANY
:
935 sec_flags
|= SEC_LINK_DUPLICATES_DISCARD
;
938 case IMAGE_COMDAT_SELECT_SAME_SIZE
:
939 sec_flags
|= SEC_LINK_DUPLICATES_SAME_SIZE
;
942 case IMAGE_COMDAT_SELECT_EXACT_MATCH
:
943 /* Not yet fully implemented ??? */
944 sec_flags
|= SEC_LINK_DUPLICATES_SAME_CONTENTS
;
947 /* debug$S gets this case; other
950 /* There may be no symbol... we'll search
951 the whole table... Is this the right
952 place to play this game? Or should we do
953 it when reading it in. */
954 case IMAGE_COMDAT_SELECT_ASSOCIATIVE
:
955 #ifdef STRICT_PE_FORMAT
956 /* FIXME: This is not currently implemented. */
957 sec_flags
|= SEC_LINK_DUPLICATES_DISCARD
;
959 sec_flags
&= ~SEC_LINK_ONCE
;
963 default: /* 0 means "no symbol" */
964 /* debug$F gets this case; other
966 sec_flags
|= SEC_LINK_DUPLICATES_DISCARD
;
973 /* Gas mode: the first matching on partial name. */
975 #ifndef TARGET_UNDERSCORE
976 #define TARGET_UNDERSCORE 0
978 /* Is this the name we're looking for? */
979 if (strcmp (target_name
,
980 symname
+ (TARGET_UNDERSCORE
? 1 : 0)) != 0)
982 /* Not the name we're looking for */
983 esym
+= (isym
.n_numaux
+ 1) * bfd_coff_symesz (abfd
);
988 /* MSVC mode: the lexically second symbol (or
989 drop through from the above). */
993 /* This must the the second symbol with the
994 section #. It is the actual symbol name.
995 Intel puts the two adjacent, but Alpha (at
996 least) spreads them out. */
999 bfd_alloc (abfd
, sizeof (struct bfd_comdat_info
));
1000 if (section
->comdat
== NULL
)
1002 section
->comdat
->symbol
=
1003 (esym
- esymstart
) / bfd_coff_symesz (abfd
);
1005 newname
= bfd_alloc (abfd
, strlen (symname
) + 1);
1006 if (newname
== NULL
)
1009 strcpy (newname
, symname
);
1010 section
->comdat
->name
= newname
;
1018 esym
+= (isym
.n_numaux
+ 1) * bfd_coff_symesz (abfd
);
1024 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
1025 /* As a GNU extension, if the name begins with .gnu.linkonce, we
1026 only link a single copy of the section. This is used to support
1027 g++. g++ will emit each template expansion in its own section.
1028 The symbols will be defined as weak, so that multiple definitions
1029 are permitted. The GNU linker extension is to actually discard
1030 all but one of the sections. */
1031 if (strncmp (name
, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
1032 sec_flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
1038 #endif /* COFF_WITH_PE */
1040 #define get_index(symbol) ((symbol)->udata.i)
1044 bfd_coff_backend_data
1048 .{* COFF symbol classifications. *}
1050 .enum coff_symbol_classification
1052 . {* Global symbol. *}
1053 . COFF_SYMBOL_GLOBAL,
1054 . {* Common symbol. *}
1055 . COFF_SYMBOL_COMMON,
1056 . {* Undefined symbol. *}
1057 . COFF_SYMBOL_UNDEFINED,
1058 . {* Local symbol. *}
1059 . COFF_SYMBOL_LOCAL,
1060 . {* PE section symbol. *}
1061 . COFF_SYMBOL_PE_SECTION
1064 Special entry points for gdb to swap in coff symbol table parts:
1067 . void (*_bfd_coff_swap_aux_in) PARAMS ((
1076 . void (*_bfd_coff_swap_sym_in) PARAMS ((
1081 . void (*_bfd_coff_swap_lineno_in) PARAMS ((
1087 Special entry points for gas to swap out coff parts:
1089 . unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
1098 . unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
1103 . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
1108 . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
1113 . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
1118 . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
1123 . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
1129 Special entry points for generic COFF routines to call target
1130 dependent COFF routines:
1132 . unsigned int _bfd_filhsz;
1133 . unsigned int _bfd_aoutsz;
1134 . unsigned int _bfd_scnhsz;
1135 . unsigned int _bfd_symesz;
1136 . unsigned int _bfd_auxesz;
1137 . unsigned int _bfd_relsz;
1138 . unsigned int _bfd_linesz;
1139 . unsigned int _bfd_filnmlen;
1140 . boolean _bfd_coff_long_filenames;
1141 . boolean _bfd_coff_long_section_names;
1142 . unsigned int _bfd_coff_default_section_alignment_power;
1143 . boolean _bfd_coff_force_symnames_in_strings;
1144 . unsigned int _bfd_coff_debug_string_prefix_length;
1145 . void (*_bfd_coff_swap_filehdr_in) PARAMS ((
1149 . void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
1153 . void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
1157 . void (*_bfd_coff_swap_reloc_in) PARAMS ((
1161 . boolean (*_bfd_coff_bad_format_hook) PARAMS ((
1163 . PTR internal_filehdr));
1164 . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
1166 . PTR internal_filehdr));
1167 . PTR (*_bfd_coff_mkobject_hook) PARAMS ((
1169 . PTR internal_filehdr,
1170 . PTR internal_aouthdr));
1171 . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
1173 . PTR internal_scnhdr,
1175 . asection *section));
1176 . void (*_bfd_set_alignment_hook) PARAMS ((
1179 . PTR internal_scnhdr));
1180 . boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
1182 . boolean (*_bfd_coff_symname_in_debug) PARAMS ((
1184 . struct internal_syment *sym));
1185 . boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
1187 . combined_entry_type *table_base,
1188 . combined_entry_type *symbol,
1189 . unsigned int indaux,
1190 . combined_entry_type *aux));
1191 . boolean (*_bfd_coff_print_aux) PARAMS ((
1194 . combined_entry_type *table_base,
1195 . combined_entry_type *symbol,
1196 . combined_entry_type *aux,
1197 . unsigned int indaux));
1198 . void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
1200 . struct bfd_link_info *link_info,
1201 . struct bfd_link_order *link_order,
1204 . unsigned int *src_ptr,
1205 . unsigned int *dst_ptr));
1206 . int (*_bfd_coff_reloc16_estimate) PARAMS ((
1208 . asection *input_section,
1210 . unsigned int shrink,
1211 . struct bfd_link_info *link_info));
1212 . enum coff_symbol_classification (*_bfd_coff_classify_symbol) PARAMS ((
1214 . struct internal_syment *));
1215 . boolean (*_bfd_coff_compute_section_file_positions) PARAMS ((
1217 . boolean (*_bfd_coff_start_final_link) PARAMS ((
1219 . struct bfd_link_info *info));
1220 . boolean (*_bfd_coff_relocate_section) PARAMS ((
1222 . struct bfd_link_info *info,
1224 . asection *input_section,
1225 . bfd_byte *contents,
1226 . struct internal_reloc *relocs,
1227 . struct internal_syment *syms,
1228 . asection **sections));
1229 . reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
1232 . struct internal_reloc *rel,
1233 . struct coff_link_hash_entry *h,
1234 . struct internal_syment *sym,
1235 . bfd_vma *addendp));
1236 . boolean (*_bfd_coff_adjust_symndx) PARAMS ((
1238 . struct bfd_link_info *info,
1241 . struct internal_reloc *reloc,
1242 . boolean *adjustedp));
1243 . boolean (*_bfd_coff_link_add_one_symbol) PARAMS ((
1244 . struct bfd_link_info *info,
1248 . asection *section,
1250 . const char *string,
1253 . struct bfd_link_hash_entry **hashp));
1255 . boolean (*_bfd_coff_link_output_has_begun) PARAMS ((
1257 . struct coff_final_link_info * pfinfo));
1258 . boolean (*_bfd_coff_final_link_postscript) PARAMS ((
1260 . struct coff_final_link_info * pfinfo));
1262 .} bfd_coff_backend_data;
1264 .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1266 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1267 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1269 .#define bfd_coff_swap_sym_in(a,e,i) \
1270 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1272 .#define bfd_coff_swap_lineno_in(a,e,i) \
1273 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1275 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1276 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1278 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1279 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1281 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1282 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1284 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1285 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1287 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1288 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1290 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1291 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1293 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1294 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1296 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1297 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1298 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1299 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1300 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1301 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
1302 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1303 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1304 .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1305 .#define bfd_coff_long_section_names(abfd) \
1306 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1307 .#define bfd_coff_default_section_alignment_power(abfd) \
1308 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1309 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1310 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1312 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1313 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1315 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1316 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1318 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1319 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1321 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1322 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1324 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1325 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1326 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1327 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
1329 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section)\
1330 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1331 . (abfd, scnhdr, name, section))
1333 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1334 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1336 .#define bfd_coff_slurp_symbol_table(abfd)\
1337 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1339 .#define bfd_coff_symname_in_debug(abfd, sym)\
1340 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1342 .#define bfd_coff_force_symnames_in_strings(abfd)\
1343 . (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
1345 .#define bfd_coff_debug_string_prefix_length(abfd)\
1346 . (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
1348 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1349 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1350 . (abfd, file, base, symbol, aux, indaux))
1352 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
1353 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1354 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1356 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1357 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1358 . (abfd, section, reloc, shrink, link_info))
1360 .#define bfd_coff_classify_symbol(abfd, sym)\
1361 . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1364 .#define bfd_coff_compute_section_file_positions(abfd)\
1365 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1368 .#define bfd_coff_start_final_link(obfd, info)\
1369 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1371 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1372 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1373 . (obfd, info, ibfd, o, con, rel, isyms, secs))
1374 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1375 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1376 . (abfd, sec, rel, h, sym, addendp))
1377 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1378 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1379 . (obfd, info, ibfd, sec, rel, adjustedp))
1380 .#define bfd_coff_link_add_one_symbol(info,abfd,name,flags,section,value,string,cp,coll,hashp)\
1381 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1382 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1384 .#define bfd_coff_link_output_has_begun(a,p) \
1385 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
1386 .#define bfd_coff_final_link_postscript(a,p) \
1387 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
1391 /* See whether the magic number matches. */
1394 coff_bad_format_hook (abfd
, filehdr
)
1395 bfd
* abfd ATTRIBUTE_UNUSED
;
1398 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1400 if (BADMAG (*internal_f
))
1403 /* if the optional header is NULL or not the correct size then
1404 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1405 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1406 optional header is of a different size.
1408 But the mips keeps extra stuff in it's opthdr, so dont check
1412 #if defined(M88) || defined(I960)
1413 if (internal_f
->f_opthdr
!= 0 && bfd_coff_aoutsz (abfd
) != internal_f
->f_opthdr
)
1420 /* Check whether this section uses an alignment other than the
1424 coff_set_custom_section_alignment (abfd
, section
, alignment_table
, table_size
)
1425 bfd
*abfd ATTRIBUTE_UNUSED
;
1427 const struct coff_section_alignment_entry
*alignment_table
;
1428 const unsigned int table_size
;
1430 const unsigned int default_alignment
= COFF_DEFAULT_SECTION_ALIGNMENT_POWER
;
1433 for (i
= 0; i
< table_size
; ++i
)
1435 const char *secname
= bfd_get_section_name (abfd
, section
);
1436 if (alignment_table
[i
].comparison_length
== (unsigned int) -1
1437 ? strcmp (alignment_table
[i
].name
, secname
) == 0
1438 : strncmp (alignment_table
[i
].name
, secname
,
1439 alignment_table
[i
].comparison_length
) == 0)
1442 if (i
>= table_size
)
1445 if (alignment_table
[i
].default_alignment_min
!= COFF_ALIGNMENT_FIELD_EMPTY
1446 && default_alignment
< alignment_table
[i
].default_alignment_min
)
1449 if (alignment_table
[i
].default_alignment_max
!= COFF_ALIGNMENT_FIELD_EMPTY
1450 && default_alignment
> alignment_table
[i
].default_alignment_max
)
1453 section
->alignment_power
= alignment_table
[i
].alignment_power
;
1456 /* Custom section alignment records. */
1458 static const struct coff_section_alignment_entry
1459 coff_section_alignment_table
[] =
1461 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1462 COFF_SECTION_ALIGNMENT_ENTRIES
,
1464 /* There must not be any gaps between .stabstr sections. */
1465 { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1466 1, COFF_ALIGNMENT_FIELD_EMPTY
, 0 },
1467 /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */
1468 { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1469 3, COFF_ALIGNMENT_FIELD_EMPTY
, 2 },
1470 /* Similarly for the .ctors and .dtors sections. */
1471 { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1472 3, COFF_ALIGNMENT_FIELD_EMPTY
, 2 },
1473 { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1474 3, COFF_ALIGNMENT_FIELD_EMPTY
, 2 }
1477 static const unsigned int coff_section_alignment_table_size
=
1478 sizeof coff_section_alignment_table
/ sizeof coff_section_alignment_table
[0];
1480 /* Initialize a section structure with information peculiar to this
1481 particular implementation of COFF. */
1484 coff_new_section_hook (abfd
, section
)
1488 combined_entry_type
*native
;
1490 section
->alignment_power
= COFF_DEFAULT_SECTION_ALIGNMENT_POWER
;
1493 if (xcoff_data (abfd
)->text_align_power
!= 0
1494 && strcmp (bfd_get_section_name (abfd
, section
), ".text") == 0)
1495 section
->alignment_power
= xcoff_data (abfd
)->text_align_power
;
1496 if (xcoff_data (abfd
)->data_align_power
!= 0
1497 && strcmp (bfd_get_section_name (abfd
, section
), ".data") == 0)
1498 section
->alignment_power
= xcoff_data (abfd
)->data_align_power
;
1501 /* Allocate aux records for section symbols, to store size and
1504 @@ The 10 is a guess at a plausible maximum number of aux entries
1505 (but shouldn't be a constant). */
1506 native
= ((combined_entry_type
*)
1507 bfd_zalloc (abfd
, sizeof (combined_entry_type
) * 10));
1511 /* We don't need to set up n_name, n_value, or n_scnum in the native
1512 symbol information, since they'll be overriden by the BFD symbol
1513 anyhow. However, we do need to set the type and storage class,
1514 in case this symbol winds up getting written out. The value 0
1515 for n_numaux is already correct. */
1517 native
->u
.syment
.n_type
= T_NULL
;
1518 native
->u
.syment
.n_sclass
= C_STAT
;
1520 coffsymbol (section
->symbol
)->native
= native
;
1522 coff_set_custom_section_alignment (abfd
, section
,
1523 coff_section_alignment_table
,
1524 coff_section_alignment_table_size
);
1529 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1531 /* Set the alignment of a BFD section. */
1533 static void coff_set_alignment_hook
PARAMS ((bfd
*, asection
*, PTR
));
1536 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1537 bfd
* abfd ATTRIBUTE_UNUSED
;
1541 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1545 /* Extract ALIGN from 2**ALIGN stored in section header */
1546 for (i
= 0; i
< 32; i
++)
1547 if ((1 << i
) >= hdr
->s_align
)
1551 /* TI tools puts the alignment power in bits 8-11 */
1552 i
= (hdr
->s_flags
>> 8) & 0xF ;
1554 #ifdef COFF_DECODE_ALIGNMENT
1555 i
= COFF_DECODE_ALIGNMENT(hdr
->s_flags
);
1557 section
->alignment_power
= i
;
1559 #ifdef coff_set_section_load_page
1560 coff_set_section_load_page (section
, hdr
->s_page
);
1564 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1567 /* a couple of macros to help setting the alignment power field */
1568 #define ALIGN_SET(field,x,y) \
1569 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
1571 section->alignment_power = y;\
1574 #define ELIFALIGN_SET(field,x,y) \
1575 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
1577 section->alignment_power = y;\
1580 static void coff_set_alignment_hook
PARAMS ((bfd
*, asection
*, PTR
));
1583 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1584 bfd
* abfd ATTRIBUTE_UNUSED
;
1588 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1590 ALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_64BYTES
, 6)
1591 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_32BYTES
, 5)
1592 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_16BYTES
, 4)
1593 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_8BYTES
, 3)
1594 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_4BYTES
, 2)
1595 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_2BYTES
, 1)
1596 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_1BYTES
, 0)
1598 /* In a PE image file, the s_paddr field holds the virtual size of a
1599 section, while the s_size field holds the raw size. We also keep
1600 the original section flag value, since not every bit can be
1601 mapped onto a generic BFD section bit. */
1602 if (coff_section_data (abfd
, section
) == NULL
)
1604 section
->used_by_bfd
=
1605 (PTR
) bfd_zalloc (abfd
, sizeof (struct coff_section_tdata
));
1606 if (section
->used_by_bfd
== NULL
)
1608 /* FIXME: Return error. */
1612 if (pei_section_data (abfd
, section
) == NULL
)
1614 coff_section_data (abfd
, section
)->tdata
=
1615 (PTR
) bfd_zalloc (abfd
, sizeof (struct pei_section_tdata
));
1616 if (coff_section_data (abfd
, section
)->tdata
== NULL
)
1618 /* FIXME: Return error. */
1622 pei_section_data (abfd
, section
)->virt_size
= hdr
->s_paddr
;
1623 pei_section_data (abfd
, section
)->pe_flags
= hdr
->s_flags
;
1625 section
->lma
= hdr
->s_vaddr
;
1627 /* check for extended relocs */
1628 if (hdr
->s_flags
& IMAGE_SCN_LNK_NRELOC_OVFL
)
1630 struct external_reloc dst
;
1631 struct internal_reloc n
;
1632 int oldpos
= bfd_tell (abfd
);
1633 bfd_seek (abfd
, hdr
->s_relptr
, 0);
1634 if (bfd_read ((PTR
) & dst
, 1, bfd_coff_relsz (abfd
), abfd
)
1635 != bfd_coff_relsz (abfd
))
1638 coff_swap_reloc_in (abfd
, &dst
, &n
);
1639 bfd_seek (abfd
, oldpos
, 0);
1640 section
->reloc_count
=
1641 hdr
->s_nreloc
= n
.r_vaddr
;
1645 #undef ELIFALIGN_SET
1647 #else /* ! COFF_WITH_PE */
1650 /* We grossly abuse this function to handle XCOFF overflow headers.
1651 When we see one, we correct the reloc and line number counts in the
1652 real header, and remove the section we just created. */
1654 static void coff_set_alignment_hook
PARAMS ((bfd
*, asection
*, PTR
));
1657 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1662 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1666 if ((hdr
->s_flags
& STYP_OVRFLO
) == 0)
1669 real_sec
= coff_section_from_bfd_index (abfd
, hdr
->s_nreloc
);
1670 if (real_sec
== NULL
)
1673 real_sec
->reloc_count
= hdr
->s_paddr
;
1674 real_sec
->lineno_count
= hdr
->s_vaddr
;
1676 for (ps
= &abfd
->sections
; *ps
!= NULL
; ps
= &(*ps
)->next
)
1681 --abfd
->section_count
;
1687 #else /* ! RS6000COFF_C */
1689 #define coff_set_alignment_hook \
1690 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1692 #endif /* ! RS6000COFF_C */
1693 #endif /* ! COFF_WITH_PE */
1694 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1696 #ifndef coff_mkobject
1698 static boolean coff_mkobject
PARAMS ((bfd
*));
1701 coff_mkobject (abfd
)
1704 coff_data_type
*coff
;
1706 abfd
->tdata
.coff_obj_data
= (struct coff_tdata
*) bfd_zalloc (abfd
, sizeof (coff_data_type
));
1707 if (abfd
->tdata
.coff_obj_data
== 0)
1709 coff
= coff_data (abfd
);
1710 coff
->symbols
= (coff_symbol_type
*) NULL
;
1711 coff
->conversion_table
= (unsigned int *) NULL
;
1712 coff
->raw_syments
= (struct coff_ptr_struct
*) NULL
;
1713 coff
->relocbase
= 0;
1714 coff
->local_toc_sym_map
= 0;
1716 /* make_abs_section(abfd);*/
1722 /* Create the COFF backend specific information. */
1723 #ifndef coff_mkobject_hook
1725 coff_mkobject_hook (abfd
, filehdr
, aouthdr
)
1728 PTR aouthdr ATTRIBUTE_UNUSED
;
1730 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1731 coff_data_type
*coff
;
1733 if (coff_mkobject (abfd
) == false)
1736 coff
= coff_data (abfd
);
1738 coff
->sym_filepos
= internal_f
->f_symptr
;
1740 /* These members communicate important constants about the symbol
1741 table to GDB's symbol-reading code. These `constants'
1742 unfortunately vary among coff implementations... */
1743 coff
->local_n_btmask
= N_BTMASK
;
1744 coff
->local_n_btshft
= N_BTSHFT
;
1745 coff
->local_n_tmask
= N_TMASK
;
1746 coff
->local_n_tshift
= N_TSHIFT
;
1747 coff
->local_symesz
= bfd_coff_symesz (abfd
);
1748 coff
->local_auxesz
= bfd_coff_auxesz (abfd
);
1749 coff
->local_linesz
= bfd_coff_linesz (abfd
);
1751 coff
->timestamp
= internal_f
->f_timdat
;
1753 obj_raw_syment_count (abfd
) =
1754 obj_conv_table_size (abfd
) =
1755 internal_f
->f_nsyms
;
1758 if ((internal_f
->f_flags
& F_SHROBJ
) != 0)
1759 abfd
->flags
|= DYNAMIC
;
1760 if (aouthdr
!= NULL
&& internal_f
->f_opthdr
>= bfd_coff_aoutsz (abfd
))
1762 struct internal_aouthdr
*internal_a
=
1763 (struct internal_aouthdr
*) aouthdr
;
1764 struct xcoff_tdata
*xcoff
;
1766 xcoff
= xcoff_data (abfd
);
1767 # ifdef U803XTOCMAGIC
1768 xcoff
->xcoff64
= internal_f
->f_magic
== U803XTOCMAGIC
;
1772 xcoff
->full_aouthdr
= true;
1773 xcoff
->toc
= internal_a
->o_toc
;
1774 xcoff
->sntoc
= internal_a
->o_sntoc
;
1775 xcoff
->snentry
= internal_a
->o_snentry
;
1776 xcoff
->text_align_power
= internal_a
->o_algntext
;
1777 xcoff
->data_align_power
= internal_a
->o_algndata
;
1778 xcoff
->modtype
= internal_a
->o_modtype
;
1779 xcoff
->cputype
= internal_a
->o_cputype
;
1780 xcoff
->maxdata
= internal_a
->o_maxdata
;
1781 xcoff
->maxstack
= internal_a
->o_maxstack
;
1786 /* Set the flags field from the COFF header read in */
1787 if (! _bfd_coff_arm_set_private_flags (abfd
, internal_f
->f_flags
))
1792 /* FIXME: I'm not sure this is ever executed, since peicode.h
1793 defines coff_mkobject_hook. */
1794 if ((internal_f
->f_flags
& IMAGE_FILE_DEBUG_STRIPPED
) == 0)
1795 abfd
->flags
|= HAS_DEBUG
;
1802 /* Determine the machine architecture and type. FIXME: This is target
1803 dependent because the magic numbers are defined in the target
1804 dependent header files. But there is no particular need for this.
1805 If the magic numbers were moved to a separate file, this function
1806 would be target independent and would also be much more successful
1807 at linking together COFF files for different architectures. */
1810 coff_set_arch_mach_hook (abfd
, filehdr
)
1815 enum bfd_architecture arch
;
1816 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1819 switch (internal_f
->f_magic
)
1823 arch
= bfd_arch_powerpc
;
1824 machine
= 0; /* what does this mean? (krk) */
1830 case I386AIXMAGIC
: /* Danbury PS/2 AIX C Compiler */
1831 case LYNXCOFFMAGIC
: /* shadows the m68k Lynx number below, sigh */
1832 arch
= bfd_arch_i386
;
1838 arch
= bfd_arch_ia64
;
1842 #ifdef A29K_MAGIC_BIG
1843 case A29K_MAGIC_BIG
:
1844 case A29K_MAGIC_LITTLE
:
1845 arch
= bfd_arch_a29k
;
1853 arch
= bfd_arch_arm
;
1854 switch (internal_f
->f_flags
& F_ARM_ARCHITECTURE_MASK
)
1856 case F_ARM_2
: machine
= bfd_mach_arm_2
; break;
1857 case F_ARM_2a
: machine
= bfd_mach_arm_2a
; break;
1858 case F_ARM_3
: machine
= bfd_mach_arm_3
; break;
1860 case F_ARM_3M
: machine
= bfd_mach_arm_3M
; break;
1861 case F_ARM_4
: machine
= bfd_mach_arm_4
; break;
1862 case F_ARM_4T
: machine
= bfd_mach_arm_4T
; break;
1863 case F_ARM_5
: machine
= bfd_mach_arm_5
; break;
1870 #ifdef MC68KBCSMAGIC
1873 #ifdef APOLLOM68KMAGIC
1874 case APOLLOM68KMAGIC
:
1876 #ifdef LYNXCOFFMAGIC
1879 arch
= bfd_arch_m68k
;
1880 machine
= bfd_mach_m68020
;
1887 arch
= bfd_arch_m88k
;
1893 arch
= bfd_arch_z8k
;
1894 switch (internal_f
->f_flags
& F_MACHMASK
)
1897 machine
= bfd_mach_z8001
;
1900 machine
= bfd_mach_z8002
;
1909 arch
= bfd_arch_i860
;
1916 arch
= bfd_arch_i960
;
1917 switch (F_I960TYPE
& internal_f
->f_flags
)
1921 machine
= bfd_mach_i960_core
;
1924 machine
= bfd_mach_i960_kb_sb
;
1927 machine
= bfd_mach_i960_mc
;
1930 machine
= bfd_mach_i960_xa
;
1933 machine
= bfd_mach_i960_ca
;
1936 machine
= bfd_mach_i960_ka_sa
;
1939 machine
= bfd_mach_i960_jx
;
1942 machine
= bfd_mach_i960_hx
;
1960 if (xcoff_data (abfd
)->cputype
!= -1)
1961 cputype
= xcoff_data (abfd
)->cputype
& 0xff;
1964 /* We did not get a value from the a.out header. If the
1965 file has not been stripped, we may be able to get the
1966 architecture information from the first symbol, if it
1967 is a .file symbol. */
1968 if (obj_raw_syment_count (abfd
) == 0)
1973 struct internal_syment sym
;
1975 buf
= (bfd_byte
*) bfd_malloc (bfd_coff_symesz (abfd
));
1976 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1977 || (bfd_read (buf
, 1, bfd_coff_symesz (abfd
), abfd
)
1978 != bfd_coff_symesz (abfd
)))
1983 bfd_coff_swap_sym_in (abfd
, (PTR
) buf
, (PTR
) &sym
);
1984 if (sym
.n_sclass
== C_FILE
)
1985 cputype
= sym
.n_type
& 0xff;
1992 /* FIXME: We don't handle all cases here. */
1998 /* PowerPC Macs use the same magic numbers as RS/6000
1999 (because that's how they were bootstrapped originally),
2000 but they are always PowerPC architecture. */
2001 arch
= bfd_arch_powerpc
;
2002 machine
= bfd_mach_ppc
;
2005 arch
= bfd_arch_powerpc
;
2006 machine
= bfd_mach_ppc_620
;
2008 arch
= bfd_arch_rs6000
;
2009 machine
= bfd_mach_rs6k
;
2011 #endif /* POWERMAC */
2015 arch
= bfd_arch_powerpc
;
2016 machine
= bfd_mach_ppc_601
;
2018 case 2: /* 64 bit PowerPC */
2019 arch
= bfd_arch_powerpc
;
2020 machine
= bfd_mach_ppc_620
;
2023 arch
= bfd_arch_powerpc
;
2024 machine
= bfd_mach_ppc
;
2027 arch
= bfd_arch_rs6000
;
2028 machine
= bfd_mach_rs6k
;
2037 arch
= bfd_arch_we32k
;
2044 arch
= bfd_arch_h8300
;
2045 machine
= bfd_mach_h8300
;
2046 /* !! FIXME this probably isn't the right place for this */
2047 abfd
->flags
|= BFD_IS_RELAXABLE
;
2053 arch
= bfd_arch_h8300
;
2054 machine
= bfd_mach_h8300h
;
2055 /* !! FIXME this probably isn't the right place for this */
2056 abfd
->flags
|= BFD_IS_RELAXABLE
;
2062 arch
= bfd_arch_h8300
;
2063 machine
= bfd_mach_h8300s
;
2064 /* !! FIXME this probably isn't the right place for this */
2065 abfd
->flags
|= BFD_IS_RELAXABLE
;
2069 #ifdef SH_ARCH_MAGIC_BIG
2070 case SH_ARCH_MAGIC_BIG
:
2071 case SH_ARCH_MAGIC_LITTLE
:
2073 case SH_ARCH_MAGIC_WINCE
:
2080 #ifdef MIPS_ARCH_MAGIC_WINCE
2081 case MIPS_ARCH_MAGIC_WINCE
:
2082 arch
= bfd_arch_mips
;
2089 arch
= bfd_arch_h8500
;
2096 #ifdef LYNXCOFFMAGIC
2099 arch
= bfd_arch_sparc
;
2106 arch
= bfd_arch_tic30
;
2111 #ifdef TICOFF_TARGET_ARCH
2112 /* this TI COFF section should be used by all new TI COFF v0 targets */
2114 arch
= TICOFF_TARGET_ARCH
;
2120 /* this TI COFF section should be used by all new TI COFF v1/2 targets */
2121 /* TI COFF1 and COFF2 use the target_id field to specify which arch */
2124 switch (internal_f
->f_target_id
)
2128 arch
= TICOFF_TARGET_ARCH
;
2132 arch
= bfd_arch_obscure
;
2133 (*_bfd_error_handler
)
2134 (_("Unrecognized TI COFF target id '0x%x'"),
2135 internal_f
->f_target_id
);
2141 #ifdef TIC80_ARCH_MAGIC
2142 case TIC80_ARCH_MAGIC
:
2143 arch
= bfd_arch_tic80
;
2149 arch
= bfd_arch_mcore
;
2152 default: /* Unreadable input file type */
2153 arch
= bfd_arch_obscure
;
2157 bfd_default_set_arch_mach (abfd
, arch
, machine
);
2161 #ifdef SYMNAME_IN_DEBUG
2163 static boolean symname_in_debug_hook
2164 PARAMS ((bfd
*, struct internal_syment
*));
2167 symname_in_debug_hook (abfd
, sym
)
2168 bfd
* abfd ATTRIBUTE_UNUSED
;
2169 struct internal_syment
*sym
;
2171 return SYMNAME_IN_DEBUG (sym
) ? true : false;
2176 #define symname_in_debug_hook \
2177 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2184 #define FORCE_SYMNAMES_IN_STRINGS
2187 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2189 static boolean coff_pointerize_aux_hook
2190 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
2191 unsigned int, combined_entry_type
*));
2195 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
2196 bfd
*abfd ATTRIBUTE_UNUSED
;
2197 combined_entry_type
*table_base
;
2198 combined_entry_type
*symbol
;
2199 unsigned int indaux
;
2200 combined_entry_type
*aux
;
2202 int class = symbol
->u
.syment
.n_sclass
;
2204 if ((class == C_EXT
|| class == C_HIDEXT
)
2205 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2207 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) == XTY_LD
)
2209 aux
->u
.auxent
.x_csect
.x_scnlen
.p
=
2210 table_base
+ aux
->u
.auxent
.x_csect
.x_scnlen
.l
;
2211 aux
->fix_scnlen
= 1;
2214 /* Return true to indicate that the caller should not do any
2215 further work on this auxent. */
2219 /* Return false to indicate that this auxent should be handled by
2227 /* We don't want to pointerize bal entries. */
2229 static boolean coff_pointerize_aux_hook
2230 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
2231 unsigned int, combined_entry_type
*));
2235 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
2236 bfd
*abfd ATTRIBUTE_UNUSED
;
2237 combined_entry_type
*table_base ATTRIBUTE_UNUSED
;
2238 combined_entry_type
*symbol
;
2239 unsigned int indaux
;
2240 combined_entry_type
*aux ATTRIBUTE_UNUSED
;
2242 /* Return true if we don't want to pointerize this aux entry, which
2243 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2245 && (symbol
->u
.syment
.n_sclass
== C_LEAFPROC
2246 || symbol
->u
.syment
.n_sclass
== C_LEAFSTAT
2247 || symbol
->u
.syment
.n_sclass
== C_LEAFEXT
));
2252 #define coff_pointerize_aux_hook 0
2255 #endif /* ! RS6000COFF_C */
2257 /* Print an aux entry. This returns true if it has printed it. */
2259 static boolean coff_print_aux
2260 PARAMS ((bfd
*, FILE *, combined_entry_type
*, combined_entry_type
*,
2261 combined_entry_type
*, unsigned int));
2264 coff_print_aux (abfd
, file
, table_base
, symbol
, aux
, indaux
)
2265 bfd
*abfd ATTRIBUTE_UNUSED
;
2266 FILE *file ATTRIBUTE_UNUSED
;
2267 combined_entry_type
*table_base ATTRIBUTE_UNUSED
;
2268 combined_entry_type
*symbol ATTRIBUTE_UNUSED
;
2269 combined_entry_type
*aux ATTRIBUTE_UNUSED
;
2270 unsigned int indaux ATTRIBUTE_UNUSED
;
2273 if ((symbol
->u
.syment
.n_sclass
== C_EXT
2274 || symbol
->u
.syment
.n_sclass
== C_HIDEXT
)
2275 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2277 /* This is a csect entry. */
2278 fprintf (file
, "AUX ");
2279 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) != XTY_LD
)
2281 BFD_ASSERT (! aux
->fix_scnlen
);
2282 fprintf (file
, "val %5ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2286 fprintf (file
, "indx ");
2287 if (! aux
->fix_scnlen
)
2288 fprintf (file
, "%4ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2290 fprintf (file
, "%4ld",
2291 (long) (aux
->u
.auxent
.x_csect
.x_scnlen
.p
- table_base
));
2294 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2295 aux
->u
.auxent
.x_csect
.x_parmhash
,
2296 (unsigned int) aux
->u
.auxent
.x_csect
.x_snhash
,
2297 SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
),
2298 SMTYP_ALIGN (aux
->u
.auxent
.x_csect
.x_smtyp
),
2299 (unsigned int) aux
->u
.auxent
.x_csect
.x_smclas
,
2300 aux
->u
.auxent
.x_csect
.x_stab
,
2301 (unsigned int) aux
->u
.auxent
.x_csect
.x_snstab
);
2306 /* Return false to indicate that no special action was taken. */
2314 To write relocations, the back end steps though the
2315 canonical relocation table and create an
2316 @code{internal_reloc}. The symbol index to use is removed from
2317 the @code{offset} field in the symbol table supplied. The
2318 address comes directly from the sum of the section base
2319 address and the relocation offset; the type is dug directly
2320 from the howto field. Then the @code{internal_reloc} is
2321 swapped into the shape of an @code{external_reloc} and written
2328 static int compare_arelent_ptr
PARAMS ((const PTR
, const PTR
));
2330 /* AUX's ld wants relocations to be sorted */
2332 compare_arelent_ptr (x
, y
)
2336 const arelent
**a
= (const arelent
**) x
;
2337 const arelent
**b
= (const arelent
**) y
;
2338 bfd_size_type aadr
= (*a
)->address
;
2339 bfd_size_type badr
= (*b
)->address
;
2341 return (aadr
< badr
? -1 : badr
< aadr
? 1 : 0);
2344 #endif /* TARG_AUX */
2347 coff_write_relocs (abfd
, first_undef
)
2353 for (s
= abfd
->sections
; s
!= (asection
*) NULL
; s
= s
->next
)
2356 struct external_reloc dst
;
2362 /* sort relocations before we write them out */
2363 p
= (arelent
**) bfd_malloc (s
->reloc_count
* sizeof (arelent
*));
2364 if (p
== NULL
&& s
->reloc_count
> 0)
2366 memcpy (p
, s
->orelocation
, s
->reloc_count
* sizeof (arelent
*));
2367 qsort (p
, s
->reloc_count
, sizeof (arelent
*), compare_arelent_ptr
);
2370 if (bfd_seek (abfd
, s
->rel_filepos
, SEEK_SET
) != 0)
2374 if (s
->reloc_count
> 0xffff)
2376 /* encode real count here as first reloc */
2377 struct internal_reloc n
;
2378 memset ((PTR
) & n
, 0, sizeof (n
));
2379 /* add one to count *this* reloc (grr) */
2380 n
.r_vaddr
= s
->reloc_count
+ 1;
2381 coff_swap_reloc_out (abfd
, &n
, &dst
);
2382 if (bfd_write ((PTR
) & dst
, 1, bfd_coff_relsz (abfd
), abfd
)
2383 != bfd_coff_relsz (abfd
))
2388 for (i
= 0; i
< s
->reloc_count
; i
++)
2390 struct internal_reloc n
;
2392 memset ((PTR
) & n
, 0, sizeof (n
));
2394 /* Now we've renumbered the symbols we know where the
2395 undefined symbols live in the table. Check the reloc
2396 entries for symbols who's output bfd isn't the right one.
2397 This is because the symbol was undefined (which means
2398 that all the pointers are never made to point to the same
2399 place). This is a bad thing,'cause the symbols attached
2400 to the output bfd are indexed, so that the relocation
2401 entries know which symbol index they point to. So we
2402 have to look up the output symbol here. */
2404 if (q
->sym_ptr_ptr
[0]->the_bfd
!= abfd
)
2407 const char *sname
= q
->sym_ptr_ptr
[0]->name
;
2408 asymbol
**outsyms
= abfd
->outsymbols
;
2409 for (i
= first_undef
; outsyms
[i
]; i
++)
2411 const char *intable
= outsyms
[i
]->name
;
2412 if (strcmp (intable
, sname
) == 0) {
2413 /* got a hit, so repoint the reloc */
2414 q
->sym_ptr_ptr
= outsyms
+ i
;
2420 n
.r_vaddr
= q
->address
+ s
->vma
;
2423 /* The 29k const/consth reloc pair is a real kludge. The consth
2424 part doesn't have a symbol; it has an offset. So rebuilt
2426 if (q
->howto
->type
== R_IHCONST
)
2427 n
.r_symndx
= q
->addend
;
2432 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2433 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q
,s
))
2435 if (q
->sym_ptr_ptr
== bfd_abs_section_ptr
->symbol_ptr_ptr
)
2437 /* This is a relocation relative to the absolute symbol. */
2441 n
.r_symndx
= get_index ((*(q
->sym_ptr_ptr
)));
2442 /* Take notice if the symbol reloc points to a symbol
2443 we don't have in our symbol table. What should we
2445 if (n
.r_symndx
> obj_conv_table_size (abfd
))
2450 #ifdef SWAP_OUT_RELOC_OFFSET
2451 n
.r_offset
= q
->addend
;
2455 /* Work out reloc type from what is required */
2456 SELECT_RELOC (n
, q
->howto
);
2458 n
.r_type
= q
->howto
->type
;
2460 coff_swap_reloc_out (abfd
, &n
, &dst
);
2461 if (bfd_write ((PTR
) & dst
, 1, bfd_coff_relsz (abfd
), abfd
)
2462 != bfd_coff_relsz (abfd
))
2475 /* Set flags and magic number of a coff file from architecture and machine
2476 type. Result is true if we can represent the arch&type, false if not. */
2479 coff_set_flags (abfd
, magicp
, flagsp
)
2481 unsigned int *magicp ATTRIBUTE_UNUSED
;
2482 unsigned short *flagsp ATTRIBUTE_UNUSED
;
2484 switch (bfd_get_arch (abfd
))
2489 switch (bfd_get_mach (abfd
))
2491 case bfd_mach_z8001
:
2494 case bfd_mach_z8002
:
2508 *magicp
= I960ROMAGIC
;
2510 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2511 I960RWMAGIC); FIXME???
2513 switch (bfd_get_mach (abfd
))
2515 case bfd_mach_i960_core
:
2518 case bfd_mach_i960_kb_sb
:
2521 case bfd_mach_i960_mc
:
2524 case bfd_mach_i960_xa
:
2527 case bfd_mach_i960_ca
:
2530 case bfd_mach_i960_ka_sa
:
2533 case bfd_mach_i960_jx
:
2536 case bfd_mach_i960_hx
:
2549 case bfd_arch_tic30
:
2550 *magicp
= TIC30MAGIC
;
2554 #ifdef TICOFF_DEFAULT_MAGIC
2555 case TICOFF_TARGET_ARCH
:
2556 /* if there's no indication of which version we want, use the default */
2558 *magicp
= TICOFF_DEFAULT_MAGIC
;
2561 /* we may want to output in a different COFF version */
2562 switch (abfd
->xvec
->name
[4])
2565 *magicp
= TICOFF0MAGIC
;
2568 *magicp
= TICOFF1MAGIC
;
2571 *magicp
= TICOFF2MAGIC
;
2580 #ifdef TIC80_ARCH_MAGIC
2581 case bfd_arch_tic80
:
2582 *magicp
= TIC80_ARCH_MAGIC
;
2588 * magicp
= ARMPEMAGIC
;
2590 * magicp
= ARMMAGIC
;
2593 if (APCS_SET (abfd
))
2595 if (APCS_26_FLAG (abfd
))
2596 * flagsp
|= F_APCS26
;
2598 if (APCS_FLOAT_FLAG (abfd
))
2599 * flagsp
|= F_APCS_FLOAT
;
2601 if (PIC_FLAG (abfd
))
2604 if (INTERWORK_SET (abfd
) && INTERWORK_FLAG (abfd
))
2605 * flagsp
|= F_INTERWORK
;
2606 switch (bfd_get_mach (abfd
))
2608 case bfd_mach_arm_2
: * flagsp
|= F_ARM_2
; break;
2609 case bfd_mach_arm_2a
: * flagsp
|= F_ARM_2a
; break;
2610 case bfd_mach_arm_3
: * flagsp
|= F_ARM_3
; break;
2611 case bfd_mach_arm_3M
: * flagsp
|= F_ARM_3M
; break;
2612 case bfd_mach_arm_4
: * flagsp
|= F_ARM_4
; break;
2613 case bfd_mach_arm_4T
: * flagsp
|= F_ARM_4T
; break;
2614 case bfd_mach_arm_5
: * flagsp
|= F_ARM_5
; break;
2615 /* FIXME: we do not have F_ARM vaues greater than F_ARM_5. */
2616 case bfd_mach_arm_5T
: * flagsp
|= F_ARM_5
; break;
2617 case bfd_mach_arm_5TE
: * flagsp
|= F_ARM_5
; break;
2618 case bfd_mach_arm_XScale
: * flagsp
|= F_ARM_5
; break;
2623 case bfd_arch_powerpc
:
2630 *magicp
= I386MAGIC
;
2632 /* Just overwrite the usual value if we're doing Lynx. */
2633 *magicp
= LYNXCOFFMAGIC
;
2640 *magicp
= I860MAGIC
;
2646 *magicp
= IA64MAGIC
;
2652 #ifdef APOLLOM68KMAGIC
2653 *magicp
= APOLLO_COFF_VERSION_NUMBER
;
2655 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2656 #ifdef NAMES_HAVE_UNDERSCORE
2657 *magicp
= MC68KBCSMAGIC
;
2659 *magicp
= MC68MAGIC
;
2663 /* Just overwrite the usual value if we're doing Lynx. */
2664 *magicp
= LYNXCOFFMAGIC
;
2672 *magicp
= MC88OMAGIC
;
2677 case bfd_arch_h8300
:
2678 switch (bfd_get_mach (abfd
))
2680 case bfd_mach_h8300
:
2681 *magicp
= H8300MAGIC
;
2683 case bfd_mach_h8300h
:
2684 *magicp
= H8300HMAGIC
;
2686 case bfd_mach_h8300s
:
2687 *magicp
= H8300SMAGIC
;
2693 #ifdef SH_ARCH_MAGIC_BIG
2695 #ifdef COFF_IMAGE_WITH_PE
2696 *magicp
= SH_ARCH_MAGIC_WINCE
;
2698 if (bfd_big_endian (abfd
))
2699 *magicp
= SH_ARCH_MAGIC_BIG
;
2701 *magicp
= SH_ARCH_MAGIC_LITTLE
;
2707 #ifdef MIPS_ARCH_MAGIC_WINCE
2709 *magicp
= MIPS_ARCH_MAGIC_WINCE
;
2715 case bfd_arch_sparc
:
2716 *magicp
= SPARCMAGIC
;
2718 /* Just overwrite the usual value if we're doing Lynx. */
2719 *magicp
= LYNXCOFFMAGIC
;
2726 case bfd_arch_h8500
:
2727 *magicp
= H8500MAGIC
;
2731 #ifdef A29K_MAGIC_BIG
2733 if (bfd_big_endian (abfd
))
2734 *magicp
= A29K_MAGIC_BIG
;
2736 *magicp
= A29K_MAGIC_LITTLE
;
2742 case bfd_arch_we32k
:
2743 *magicp
= WE32KMAGIC
;
2749 case bfd_arch_rs6000
:
2751 case bfd_arch_powerpc
:
2754 if (bfd_get_mach (abfd
) == bfd_mach_ppc_620
2755 && !strncmp (abfd
->xvec
->name
,"aix", 3))
2756 *magicp
= U803XTOCMAGIC
;
2759 *magicp
= U802TOCMAGIC
;
2766 case bfd_arch_mcore
:
2767 * magicp
= MCOREMAGIC
;
2777 default: /* Unknown architecture. */
2778 /* Fall through to "return false" below, to avoid
2779 "statement never reached" errors on the one below. */
2787 coff_set_arch_mach (abfd
, arch
, machine
)
2789 enum bfd_architecture arch
;
2790 unsigned long machine
;
2793 unsigned short dummy2
;
2795 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
2798 if (arch
!= bfd_arch_unknown
&&
2799 coff_set_flags (abfd
, &dummy1
, &dummy2
) != true)
2800 return false; /* We can't represent this type */
2802 return true; /* We're easy ... */
2805 #ifdef COFF_IMAGE_WITH_PE
2807 /* This is used to sort sections by VMA, as required by PE image
2810 static int sort_by_secaddr
PARAMS ((const PTR
, const PTR
));
2813 sort_by_secaddr (arg1
, arg2
)
2817 const asection
*a
= *(const asection
**) arg1
;
2818 const asection
*b
= *(const asection
**) arg2
;
2820 if (a
->vma
< b
->vma
)
2822 else if (a
->vma
> b
->vma
)
2828 #endif /* COFF_IMAGE_WITH_PE */
2830 /* Calculate the file position for each section. */
2833 #define ALIGN_SECTIONS_IN_FILE
2835 #if defined(TIC80COFF) || defined(TICOFF)
2836 #undef ALIGN_SECTIONS_IN_FILE
2840 coff_compute_section_file_positions (abfd
)
2844 asection
*previous
= (asection
*) NULL
;
2845 file_ptr sofar
= bfd_coff_filhsz (abfd
);
2846 boolean align_adjust
;
2847 #ifdef ALIGN_SECTIONS_IN_FILE
2852 /* On XCOFF, if we have symbols, set up the .debug section. */
2853 if (bfd_get_symcount (abfd
) > 0)
2856 bfd_size_type i
, symcount
;
2860 symcount
= bfd_get_symcount (abfd
);
2861 for (symp
= abfd
->outsymbols
, i
= 0; i
< symcount
; symp
++, i
++)
2863 coff_symbol_type
*cf
;
2865 cf
= coff_symbol_from (abfd
, *symp
);
2867 && cf
->native
!= NULL
2868 && SYMNAME_IN_DEBUG (&cf
->native
->u
.syment
))
2872 len
= strlen (bfd_asymbol_name (*symp
));
2873 if (len
> SYMNMLEN
|| bfd_coff_force_symnames_in_strings (abfd
))
2874 sz
+= len
+ 1 + bfd_coff_debug_string_prefix_length (abfd
);
2881 dsec
= bfd_make_section_old_way (abfd
, ".debug");
2884 dsec
->_raw_size
= sz
;
2885 dsec
->flags
|= SEC_HAS_CONTENTS
;
2890 #ifdef COFF_IMAGE_WITH_PE
2892 if (coff_data (abfd
)->link_info
)
2894 page_size
= pe_data (abfd
)->pe_opthdr
.FileAlignment
;
2897 page_size
= PE_DEF_FILE_ALIGNMENT
;
2899 #ifdef COFF_PAGE_SIZE
2900 int page_size
= COFF_PAGE_SIZE
;
2904 if (bfd_get_start_address (abfd
))
2906 /* A start address may have been added to the original file. In this
2907 case it will need an optional header to record it. */
2908 abfd
->flags
|= EXEC_P
;
2911 if (abfd
->flags
& EXEC_P
)
2912 sofar
+= bfd_coff_aoutsz (abfd
);
2914 else if (xcoff_data (abfd
)->full_aouthdr
)
2915 sofar
+= bfd_coff_aoutsz (abfd
);
2917 sofar
+= SMALL_AOUTSZ
;
2920 sofar
+= abfd
->section_count
* bfd_coff_scnhsz (abfd
);
2923 /* XCOFF handles overflows in the reloc and line number count fields
2924 by allocating a new section header to hold the correct counts. */
2925 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2926 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2927 sofar
+= bfd_coff_scnhsz (abfd
);
2930 #ifdef COFF_IMAGE_WITH_PE
2932 /* PE requires the sections to be in memory order when listed in
2933 the section headers. It also does not like empty loadable
2934 sections. The sections apparently do not have to be in the
2935 right order in the image file itself, but we do need to get the
2936 target_index values right. */
2939 asection
**section_list
;
2944 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2947 /* We allocate an extra cell to simplify the final loop. */
2948 section_list
= bfd_malloc (sizeof (struct asection
*) * (count
+ 1));
2949 if (section_list
== NULL
)
2953 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2955 section_list
[i
] = current
;
2958 section_list
[i
] = NULL
;
2960 qsort (section_list
, count
, sizeof (asection
*), sort_by_secaddr
);
2962 /* Rethread the linked list into sorted order; at the same time,
2963 assign target_index values. */
2965 abfd
->sections
= section_list
[0];
2966 for (i
= 0; i
< count
; i
++)
2968 current
= section_list
[i
];
2969 current
->next
= section_list
[i
+ 1];
2971 /* Later, if the section has zero size, we'll be throwing it
2972 away, so we don't want to number it now. Note that having
2973 a zero size and having real contents are different
2974 concepts: .bss has no contents, but (usually) non-zero
2976 if (current
->_raw_size
== 0)
2978 /* Discard. However, it still might have (valid) symbols
2979 in it, so arbitrarily set it to section 1 (indexing is
2980 1-based here; usually .text). __end__ and other
2981 contents of .endsection really have this happen.
2982 FIXME: This seems somewhat dubious. */
2983 current
->target_index
= 1;
2986 current
->target_index
= target_index
++;
2989 free (section_list
);
2991 #else /* ! COFF_IMAGE_WITH_PE */
2993 /* Set the target_index field. */
2997 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2998 current
->target_index
= target_index
++;
3000 #endif /* ! COFF_IMAGE_WITH_PE */
3002 align_adjust
= false;
3003 for (current
= abfd
->sections
;
3004 current
!= (asection
*) NULL
;
3005 current
= current
->next
)
3007 #ifdef COFF_IMAGE_WITH_PE
3008 /* With PE we have to pad each section to be a multiple of its
3009 page size too, and remember both sizes. */
3010 if (coff_section_data (abfd
, current
) == NULL
)
3012 current
->used_by_bfd
=
3013 (PTR
) bfd_zalloc (abfd
, sizeof (struct coff_section_tdata
));
3014 if (current
->used_by_bfd
== NULL
)
3017 if (pei_section_data (abfd
, current
) == NULL
)
3019 coff_section_data (abfd
, current
)->tdata
=
3020 (PTR
) bfd_zalloc (abfd
, sizeof (struct pei_section_tdata
));
3021 if (coff_section_data (abfd
, current
)->tdata
== NULL
)
3024 if (pei_section_data (abfd
, current
)->virt_size
== 0)
3025 pei_section_data (abfd
, current
)->virt_size
= current
->_raw_size
;
3028 /* Only deal with sections which have contents. */
3029 if (!(current
->flags
& SEC_HAS_CONTENTS
))
3032 #ifdef COFF_IMAGE_WITH_PE
3033 /* Make sure we skip empty sections in a PE image. */
3034 if (current
->_raw_size
== 0)
3038 /* Align the sections in the file to the same boundary on
3039 which they are aligned in virtual memory. I960 doesn't
3040 do this (FIXME) so we can stay in sync with Intel. 960
3041 doesn't yet page from files... */
3042 #ifdef ALIGN_SECTIONS_IN_FILE
3043 if ((abfd
->flags
& EXEC_P
) != 0)
3045 /* make sure this section is aligned on the right boundary - by
3046 padding the previous section up if necessary */
3049 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
3050 if (previous
!= (asection
*) NULL
)
3052 previous
->_raw_size
+= sofar
- old_sofar
;
3058 /* In demand paged files the low order bits of the file offset
3059 must match the low order bits of the virtual address. */
3060 #ifdef COFF_PAGE_SIZE
3061 if ((abfd
->flags
& D_PAGED
) != 0
3062 && (current
->flags
& SEC_ALLOC
) != 0)
3063 sofar
+= (current
->vma
- sofar
) % page_size
;
3065 current
->filepos
= sofar
;
3067 #ifdef COFF_IMAGE_WITH_PE
3068 /* Set the padded size. */
3069 current
->_raw_size
= (current
->_raw_size
+ page_size
-1) & -page_size
;
3072 sofar
+= current
->_raw_size
;
3074 #ifdef ALIGN_SECTIONS_IN_FILE
3075 /* make sure that this section is of the right size too */
3076 if ((abfd
->flags
& EXEC_P
) == 0)
3078 bfd_size_type old_size
;
3080 old_size
= current
->_raw_size
;
3081 current
->_raw_size
= BFD_ALIGN (current
->_raw_size
,
3082 1 << current
->alignment_power
);
3083 align_adjust
= current
->_raw_size
!= old_size
;
3084 sofar
+= current
->_raw_size
- old_size
;
3089 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
3090 align_adjust
= sofar
!= old_sofar
;
3091 current
->_raw_size
+= sofar
- old_sofar
;
3095 #ifdef COFF_IMAGE_WITH_PE
3096 /* For PE we need to make sure we pad out to the aligned
3097 _raw_size, in case the caller only writes out data to the
3098 unaligned _raw_size. */
3099 if (pei_section_data (abfd
, current
)->virt_size
< current
->_raw_size
)
3100 align_adjust
= true;
3104 /* Force .lib sections to start at zero. The vma is then
3105 incremented in coff_set_section_contents. This is right for
3107 if (strcmp (current
->name
, _LIB
) == 0)
3108 bfd_set_section_vma (abfd
, current
, 0);
3114 /* It is now safe to write to the output file. If we needed an
3115 alignment adjustment for the last section, then make sure that
3116 there is a byte at offset sofar. If there are no symbols and no
3117 relocs, then nothing follows the last section. If we don't force
3118 the last byte out, then the file may appear to be truncated. */
3124 if (bfd_seek (abfd
, sofar
- 1, SEEK_SET
) != 0
3125 || bfd_write (&b
, 1, 1, abfd
) != 1)
3129 /* Make sure the relocations are aligned. We don't need to make
3130 sure that this byte exists, because it will only matter if there
3131 really are relocs. */
3132 sofar
= BFD_ALIGN (sofar
, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER
);
3134 obj_relocbase (abfd
) = sofar
;
3135 abfd
->output_has_begun
= true;
3142 /* This can never work, because it is called too late--after the
3143 section positions have been set. I can't figure out what it is
3144 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3146 /* If .file, .text, .data, .bss symbols are missing, add them. */
3147 /* @@ Should we only be adding missing symbols, or overriding the aux
3148 values for existing section symbols? */
3150 coff_add_missing_symbols (abfd
)
3153 unsigned int nsyms
= bfd_get_symcount (abfd
);
3154 asymbol
**sympp
= abfd
->outsymbols
;
3157 int need_text
= 1, need_data
= 1, need_bss
= 1, need_file
= 1;
3159 for (i
= 0; i
< nsyms
; i
++)
3161 coff_symbol_type
*csym
= coff_symbol_from (abfd
, sympp
[i
]);
3165 /* only do this if there is a coff representation of the input
3167 if (csym
->native
&& csym
->native
->u
.syment
.n_sclass
== C_FILE
)
3172 name
= csym
->symbol
.name
;
3175 if (!strcmp (name
, _TEXT
))
3178 else if (!strcmp (name
, ".wtext"))
3181 else if (!strcmp (name
, _DATA
))
3183 else if (!strcmp (name
, _BSS
))
3187 /* Now i == bfd_get_symcount (abfd). */
3188 /* @@ For now, don't deal with .file symbol. */
3191 if (!need_text
&& !need_data
&& !need_bss
&& !need_file
)
3193 nsyms
+= need_text
+ need_data
+ need_bss
+ need_file
;
3194 sympp2
= (asymbol
**) bfd_alloc (abfd
, nsyms
* sizeof (asymbol
*));
3197 memcpy (sympp2
, sympp
, i
* sizeof (asymbol
*));
3200 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3204 sympp2
[i
++] = coff_section_symbol (abfd
, _TEXT
);
3206 sympp2
[i
++] = coff_section_symbol (abfd
, _DATA
);
3208 sympp2
[i
++] = coff_section_symbol (abfd
, _BSS
);
3209 BFD_ASSERT (i
== nsyms
);
3210 bfd_set_symtab (abfd
, sympp2
, nsyms
);
3219 coff_write_object_contents (abfd
)
3223 boolean hasrelocs
= false;
3224 boolean haslinno
= false;
3225 boolean hasdebug
= false;
3227 file_ptr reloc_base
;
3228 file_ptr lineno_base
;
3230 unsigned long reloc_size
= 0, reloc_count
= 0;
3231 unsigned long lnno_size
= 0;
3232 boolean long_section_names
;
3233 asection
*text_sec
= NULL
;
3234 asection
*data_sec
= NULL
;
3235 asection
*bss_sec
= NULL
;
3236 struct internal_filehdr internal_f
;
3237 struct internal_aouthdr internal_a
;
3238 #ifdef COFF_LONG_SECTION_NAMES
3239 size_t string_size
= STRING_SIZE_SIZE
;
3242 bfd_set_error (bfd_error_system_call
);
3244 /* Make a pass through the symbol table to count line number entries and
3245 put them into the correct asections */
3247 lnno_size
= coff_count_linenumbers (abfd
) * bfd_coff_linesz (abfd
);
3249 if (abfd
->output_has_begun
== false)
3251 if (! coff_compute_section_file_positions (abfd
))
3255 reloc_base
= obj_relocbase (abfd
);
3257 /* Work out the size of the reloc and linno areas */
3259 for (current
= abfd
->sections
; current
!= NULL
; current
=
3263 /* we store the actual reloc count in the first reloc's addr */
3264 if (current
->reloc_count
> 0xffff)
3267 reloc_count
+= current
->reloc_count
;
3270 reloc_size
= reloc_count
* bfd_coff_relsz (abfd
);
3272 lineno_base
= reloc_base
+ reloc_size
;
3273 sym_base
= lineno_base
+ lnno_size
;
3275 /* Indicate in each section->line_filepos its actual file address */
3276 for (current
= abfd
->sections
; current
!= NULL
; current
=
3279 if (current
->lineno_count
)
3281 current
->line_filepos
= lineno_base
;
3282 current
->moving_line_filepos
= lineno_base
;
3283 lineno_base
+= current
->lineno_count
* bfd_coff_linesz (abfd
);
3287 current
->line_filepos
= 0;
3289 if (current
->reloc_count
)
3291 current
->rel_filepos
= reloc_base
;
3292 reloc_base
+= current
->reloc_count
* bfd_coff_relsz (abfd
);
3294 /* extra reloc to hold real count */
3295 if (current
->reloc_count
> 0xffff)
3296 reloc_base
+= bfd_coff_relsz (abfd
);
3301 current
->rel_filepos
= 0;
3305 /* Write section headers to the file. */
3306 internal_f
.f_nscns
= 0;
3308 if ((abfd
->flags
& EXEC_P
) != 0)
3309 scn_base
= bfd_coff_filhsz (abfd
) + bfd_coff_aoutsz (abfd
);
3312 scn_base
= bfd_coff_filhsz (abfd
);
3314 if (xcoff_data (abfd
)->full_aouthdr
)
3315 scn_base
+= bfd_coff_aoutsz (abfd
);
3317 scn_base
+= SMALL_AOUTSZ
;
3321 if (bfd_seek (abfd
, scn_base
, SEEK_SET
) != 0)
3324 long_section_names
= false;
3325 for (current
= abfd
->sections
;
3327 current
= current
->next
)
3329 struct internal_scnhdr section
;
3330 boolean is_reloc_section
= false;
3332 #ifdef COFF_IMAGE_WITH_PE
3333 if (strcmp (current
->name
, ".reloc") == 0)
3335 is_reloc_section
= true;
3337 pe_data (abfd
)->has_reloc_section
= 1;
3341 internal_f
.f_nscns
++;
3343 strncpy (section
.s_name
, current
->name
, SCNNMLEN
);
3345 #ifdef COFF_LONG_SECTION_NAMES
3346 /* Handle long section names as in PE. This must be compatible
3347 with the code in coff_write_symbols and _bfd_coff_final_link. */
3351 len
= strlen (current
->name
);
3354 memset (section
.s_name
, 0, SCNNMLEN
);
3355 sprintf (section
.s_name
, "/%lu", (unsigned long) string_size
);
3356 string_size
+= len
+ 1;
3357 long_section_names
= true;
3363 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3364 Ian Taylor <ian@cygnus.com>. */
3365 if (strcmp (current
->name
, _LIB
) == 0)
3366 section
.s_vaddr
= 0;
3369 section
.s_vaddr
= current
->vma
;
3370 section
.s_paddr
= current
->lma
;
3371 section
.s_size
= current
->_raw_size
;
3372 #ifdef coff_get_section_load_page
3373 section
.s_page
= coff_get_section_load_page (current
);
3377 section
.s_paddr
= 0;
3379 #ifdef COFF_IMAGE_WITH_PE
3380 /* Reminder: s_paddr holds the virtual size of the section. */
3381 if (coff_section_data (abfd
, current
) != NULL
3382 && pei_section_data (abfd
, current
) != NULL
)
3383 section
.s_paddr
= pei_section_data (abfd
, current
)->virt_size
;
3385 section
.s_paddr
= 0;
3389 If this section has no size or is unloadable then the scnptr
3392 if (current
->_raw_size
== 0 ||
3393 (current
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
3395 section
.s_scnptr
= 0;
3399 section
.s_scnptr
= current
->filepos
;
3401 section
.s_relptr
= current
->rel_filepos
;
3402 section
.s_lnnoptr
= current
->line_filepos
;
3403 section
.s_nreloc
= current
->reloc_count
;
3404 section
.s_nlnno
= current
->lineno_count
;
3405 #ifndef COFF_IMAGE_WITH_PE
3406 /* In PEI, relocs come in the .reloc section. */
3407 if (current
->reloc_count
!= 0)
3410 if (current
->lineno_count
!= 0)
3412 if ((current
->flags
& SEC_DEBUGGING
) != 0
3413 && ! is_reloc_section
)
3418 /* Indicate the use of an XCOFF overflow section header. */
3419 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3421 section
.s_nreloc
= 0xffff;
3422 section
.s_nlnno
= 0xffff;
3427 section
.s_flags
= sec_to_styp_flags (current
->name
, current
->flags
);
3429 if (!strcmp (current
->name
, _TEXT
))
3433 else if (!strcmp (current
->name
, _DATA
))
3437 else if (!strcmp (current
->name
, _BSS
))
3443 section
.s_align
= (current
->alignment_power
3444 ? 1 << current
->alignment_power
3448 /* TI COFF puts the alignment power in bits 8-11 of the flags */
3449 section
.s_flags
|= (current
->alignment_power
& 0xF) << 8;
3451 #ifdef COFF_ENCODE_ALIGNMENT
3452 COFF_ENCODE_ALIGNMENT(section
, current
->alignment_power
);
3455 #ifdef COFF_IMAGE_WITH_PE
3456 /* Suppress output of the sections if they are null. ld
3457 includes the bss and data sections even if there is no size
3458 assigned to them. NT loader doesn't like it if these section
3459 headers are included if the sections themselves are not
3460 needed. See also coff_compute_section_file_positions. */
3461 if (section
.s_size
== 0)
3462 internal_f
.f_nscns
--;
3467 if (coff_swap_scnhdr_out (abfd
, §ion
, &buff
) == 0
3468 || bfd_write ((PTR
) (&buff
), 1, bfd_coff_scnhsz (abfd
), abfd
)
3469 != bfd_coff_scnhsz (abfd
))
3474 /* PE stores COMDAT section information in the symbol table. If
3475 this section is supposed to have some COMDAT info, track down
3476 the symbol in the symbol table and modify it. */
3477 if ((current
->flags
& SEC_LINK_ONCE
) != 0)
3479 unsigned int i
, count
;
3481 coff_symbol_type
*csym
= NULL
;
3485 count
= bfd_get_symcount (abfd
);
3486 for (i
= 0, psym
= abfd
->outsymbols
; i
< count
; i
++, psym
++)
3488 if ((*psym
)->section
!= current
)
3491 /* Remember the location of the first symbol in this
3493 if (psymsec
== NULL
)
3496 /* See if this is the section symbol. */
3497 if (strcmp ((*psym
)->name
, current
->name
) == 0)
3499 csym
= coff_symbol_from (abfd
, *psym
);
3501 || csym
->native
== NULL
3502 || csym
->native
->u
.syment
.n_numaux
< 1
3503 || csym
->native
->u
.syment
.n_sclass
!= C_STAT
3504 || csym
->native
->u
.syment
.n_type
!= T_NULL
)
3507 /* Here *PSYM is the section symbol for CURRENT. */
3514 Note that we might not if we're converting the file from
3515 some other object file format. */
3518 combined_entry_type
*aux
;
3520 /* We don't touch the x_checksum field. The
3521 x_associated field is not currently supported. */
3523 aux
= csym
->native
+ 1;
3524 switch (current
->flags
& SEC_LINK_DUPLICATES
)
3526 case SEC_LINK_DUPLICATES_DISCARD
:
3527 aux
->u
.auxent
.x_scn
.x_comdat
= IMAGE_COMDAT_SELECT_ANY
;
3530 case SEC_LINK_DUPLICATES_ONE_ONLY
:
3531 aux
->u
.auxent
.x_scn
.x_comdat
=
3532 IMAGE_COMDAT_SELECT_NODUPLICATES
;
3535 case SEC_LINK_DUPLICATES_SAME_SIZE
:
3536 aux
->u
.auxent
.x_scn
.x_comdat
=
3537 IMAGE_COMDAT_SELECT_SAME_SIZE
;
3540 case SEC_LINK_DUPLICATES_SAME_CONTENTS
:
3541 aux
->u
.auxent
.x_scn
.x_comdat
=
3542 IMAGE_COMDAT_SELECT_EXACT_MATCH
;
3546 /* The COMDAT symbol must be the first symbol from this
3547 section in the symbol table. In order to make this
3548 work, we move the COMDAT symbol before the first
3549 symbol we found in the search above. It's OK to
3550 rearrange the symbol table at this point, because
3551 coff_renumber_symbols is going to rearrange it
3552 further and fix up all the aux entries. */
3553 if (psym
!= psymsec
)
3559 for (pcopy
= psym
; pcopy
> psymsec
; pcopy
--)
3560 pcopy
[0] = pcopy
[-1];
3565 #endif /* COFF_WITH_PE */
3569 /* XCOFF handles overflows in the reloc and line number count fields
3570 by creating a new section header to hold the correct values. */
3571 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
3573 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3575 struct internal_scnhdr scnhdr
;
3578 internal_f
.f_nscns
++;
3579 strncpy (&(scnhdr
.s_name
[0]), current
->name
, 8);
3580 scnhdr
.s_paddr
= current
->reloc_count
;
3581 scnhdr
.s_vaddr
= current
->lineno_count
;
3583 scnhdr
.s_scnptr
= 0;
3584 scnhdr
.s_relptr
= current
->rel_filepos
;
3585 scnhdr
.s_lnnoptr
= current
->line_filepos
;
3586 scnhdr
.s_nreloc
= current
->target_index
;
3587 scnhdr
.s_nlnno
= current
->target_index
;
3588 scnhdr
.s_flags
= STYP_OVRFLO
;
3589 if (coff_swap_scnhdr_out (abfd
, &scnhdr
, &buff
) == 0
3590 || bfd_write ((PTR
) &buff
, 1, bfd_coff_scnhsz (abfd
), abfd
)
3591 != bfd_coff_scnhsz (abfd
))
3597 /* OK, now set up the filehdr... */
3599 /* Don't include the internal abs section in the section count */
3602 We will NOT put a fucking timestamp in the header here. Every time you
3603 put it back, I will come in and take it out again. I'm sorry. This
3604 field does not belong here. We fill it with a 0 so it compares the
3605 same but is not a reasonable time. -- gnu@cygnus.com
3607 internal_f
.f_timdat
= 0;
3609 internal_f
.f_flags
= 0;
3611 if (abfd
->flags
& EXEC_P
)
3612 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
3615 internal_f
.f_opthdr
= 0;
3617 if (xcoff_data (abfd
)->full_aouthdr
)
3618 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
3620 internal_f
.f_opthdr
= SMALL_AOUTSZ
;
3625 internal_f
.f_flags
|= F_RELFLG
;
3627 internal_f
.f_flags
|= F_LNNO
;
3628 if (abfd
->flags
& EXEC_P
)
3629 internal_f
.f_flags
|= F_EXEC
;
3630 #ifdef COFF_IMAGE_WITH_PE
3632 internal_f
.f_flags
|= IMAGE_FILE_DEBUG_STRIPPED
;
3635 #ifndef COFF_WITH_PE
3636 if (bfd_little_endian (abfd
))
3637 internal_f
.f_flags
|= F_AR32WR
;
3639 internal_f
.f_flags
|= F_AR32W
;
3643 /* target id is used in TI COFF v1 and later; COFF0 won't use this field,
3644 but it doesn't hurt to set it internally */
3645 internal_f
.f_target_id
= TI_TARGET_ID
;
3647 #ifdef TIC80_TARGET_ID
3648 internal_f
.f_target_id
= TIC80_TARGET_ID
;
3652 FIXME, should do something about the other byte orders and
3657 if ((abfd
->flags
& DYNAMIC
) != 0)
3658 internal_f
.f_flags
|= F_SHROBJ
;
3659 if (bfd_get_section_by_name (abfd
, _LOADER
) != NULL
)
3660 internal_f
.f_flags
|= F_DYNLOAD
;
3663 memset (&internal_a
, 0, sizeof internal_a
);
3665 /* Set up architecture-dependent stuff */
3668 unsigned int magic
= 0;
3669 unsigned short flags
= 0;
3670 coff_set_flags (abfd
, &magic
, &flags
);
3671 internal_f
.f_magic
= magic
;
3672 internal_f
.f_flags
|= flags
;
3673 /* ...and the "opt"hdr... */
3676 #ifdef ULTRA3 /* NYU's machine */
3677 /* FIXME: This is a bogus check. I really want to see if there
3678 * is a .shbss or a .shdata section, if so then set the magic
3679 * number to indicate a shared data executable.
3681 if (internal_f
.f_nscns
>= 7)
3682 internal_a
.magic
= SHMAGIC
; /* Shared magic */
3685 internal_a
.magic
= NMAGIC
; /* Assume separate i/d */
3686 #define __A_MAGIC_SET__
3688 #ifdef TICOFF_AOUT_MAGIC
3689 internal_a
.magic
= TICOFF_AOUT_MAGIC
;
3690 #define __A_MAGIC_SET__
3693 internal_a
.magic
= TIC80_ARCH_MAGIC
;
3694 #define __A_MAGIC_SET__
3697 /* FIXME: What are the a.out magic numbers for the i860? */
3698 internal_a
.magic
= 0;
3699 #define __A_MAGIC_SET__
3702 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
3703 #define __A_MAGIC_SET__
3706 #define __A_MAGIC_SET__
3707 internal_a
.magic
= PAGEMAGICBCS
;
3711 #define __A_MAGIC_SET__
3712 internal_a
.magic
= APOLLO_COFF_VERSION_NUMBER
;
3715 #if defined(M68) || defined(WE32K) || defined(M68K)
3716 #define __A_MAGIC_SET__
3718 internal_a
.magic
= LYNXCOFFMAGIC
;
3720 #if defined(TARG_AUX)
3721 internal_a
.magic
= (abfd
->flags
& D_PAGED
? PAGEMAGICPEXECPAGED
:
3722 abfd
->flags
& WP_TEXT
? PAGEMAGICPEXECSWAPPED
:
3723 PAGEMAGICEXECSWAPPED
);
3725 #if defined (PAGEMAGICPEXECPAGED)
3726 internal_a
.magic
= PAGEMAGICPEXECPAGED
;
3728 #endif /* TARG_AUX */
3730 #endif /* M68 || WE32K || M68K */
3733 #define __A_MAGIC_SET__
3734 internal_a
.magic
= ZMAGIC
;
3738 #define __A_MAGIC_SET__
3739 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
3742 #if defined MCORE_PE
3743 #define __A_MAGIC_SET__
3744 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
3748 #define __A_MAGIC_SET__
3750 internal_a
.magic
= LYNXCOFFMAGIC
;
3752 internal_a
.magic
= ZMAGIC
;
3757 #define __A_MAGIC_SET__
3758 internal_a
.magic
= ZMAGIC
;
3762 #define __A_MAGIC_SET__
3764 internal_a
.magic
= LYNXCOFFMAGIC
;
3769 #define __A_MAGIC_SET__
3770 internal_a
.magic
= (abfd
->flags
& D_PAGED
) ? RS6K_AOUTHDR_ZMAGIC
:
3771 (abfd
->flags
& WP_TEXT
) ? RS6K_AOUTHDR_NMAGIC
:
3772 RS6K_AOUTHDR_OMAGIC
;
3775 #if defined(SH) && defined(COFF_WITH_PE)
3776 #define __A_MAGIC_SET__
3777 internal_a
.magic
= SH_PE_MAGIC
;
3780 #if defined(MIPS) && defined(COFF_WITH_PE)
3781 #define __A_MAGIC_SET__
3782 internal_a
.magic
= MIPS_PE_MAGIC
;
3785 #ifndef __A_MAGIC_SET__
3786 #include "Your aouthdr magic number is not being set!"
3788 #undef __A_MAGIC_SET__
3792 /* FIXME: Does anybody ever set this to another value? */
3793 internal_a
.vstamp
= 0;
3795 /* Now should write relocs, strings, syms */
3796 obj_sym_filepos (abfd
) = sym_base
;
3798 if (bfd_get_symcount (abfd
) != 0)
3802 if (!coff_add_missing_symbols (abfd
))
3805 if (!coff_renumber_symbols (abfd
, &firstundef
))
3807 coff_mangle_symbols (abfd
);
3808 if (! coff_write_symbols (abfd
))
3810 if (! coff_write_linenumbers (abfd
))
3812 if (! coff_write_relocs (abfd
, firstundef
))
3815 #ifdef COFF_LONG_SECTION_NAMES
3816 else if (long_section_names
&& ! obj_coff_strings_written (abfd
))
3818 /* If we have long section names we have to write out the string
3819 table even if there are no symbols. */
3820 if (! coff_write_symbols (abfd
))
3824 #ifdef COFF_IMAGE_WITH_PE
3826 else if ((abfd
->flags
& EXEC_P
) != 0)
3830 /* PowerPC PE appears to require that all executable files be
3831 rounded up to the page size. */
3834 BFD_ALIGN (sym_base
, COFF_PAGE_SIZE
) - 1,
3836 || bfd_write (&b
, 1, 1, abfd
) != 1)
3842 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
3843 backend linker, and obj_raw_syment_count is not valid until after
3844 coff_write_symbols is called. */
3845 if (obj_raw_syment_count (abfd
) != 0)
3847 internal_f
.f_symptr
= sym_base
;
3849 /* AIX appears to require that F_RELFLG not be set if there are
3850 local symbols but no relocations. */
3851 internal_f
.f_flags
&=~ F_RELFLG
;
3856 if (long_section_names
)
3857 internal_f
.f_symptr
= sym_base
;
3859 internal_f
.f_symptr
= 0;
3860 internal_f
.f_flags
|= F_LSYMS
;
3865 internal_a
.tsize
= bfd_get_section_size_before_reloc (text_sec
);
3866 internal_a
.text_start
= internal_a
.tsize
? text_sec
->vma
: 0;
3870 internal_a
.dsize
= bfd_get_section_size_before_reloc (data_sec
);
3871 internal_a
.data_start
= internal_a
.dsize
? data_sec
->vma
: 0;
3875 internal_a
.bsize
= bfd_get_section_size_before_reloc (bss_sec
);
3876 if (internal_a
.bsize
&& bss_sec
->vma
< internal_a
.data_start
)
3877 internal_a
.data_start
= bss_sec
->vma
;
3880 internal_a
.entry
= bfd_get_start_address (abfd
);
3881 internal_f
.f_nsyms
= obj_raw_syment_count (abfd
);
3884 if (xcoff_data (abfd
)->full_aouthdr
)
3887 asection
*loader_sec
;
3889 internal_a
.vstamp
= 1;
3891 internal_a
.o_snentry
= xcoff_data (abfd
)->snentry
;
3892 if (internal_a
.o_snentry
== 0)
3893 internal_a
.entry
= (bfd_vma
) -1;
3895 if (text_sec
!= NULL
)
3897 internal_a
.o_sntext
= text_sec
->target_index
;
3898 internal_a
.o_algntext
= bfd_get_section_alignment (abfd
, text_sec
);
3902 internal_a
.o_sntext
= 0;
3903 internal_a
.o_algntext
= 0;
3905 if (data_sec
!= NULL
)
3907 internal_a
.o_sndata
= data_sec
->target_index
;
3908 internal_a
.o_algndata
= bfd_get_section_alignment (abfd
, data_sec
);
3912 internal_a
.o_sndata
= 0;
3913 internal_a
.o_algndata
= 0;
3915 loader_sec
= bfd_get_section_by_name (abfd
, ".loader");
3916 if (loader_sec
!= NULL
)
3917 internal_a
.o_snloader
= loader_sec
->target_index
;
3919 internal_a
.o_snloader
= 0;
3920 if (bss_sec
!= NULL
)
3921 internal_a
.o_snbss
= bss_sec
->target_index
;
3923 internal_a
.o_snbss
= 0;
3925 toc
= xcoff_data (abfd
)->toc
;
3926 internal_a
.o_toc
= toc
;
3927 internal_a
.o_sntoc
= xcoff_data (abfd
)->sntoc
;
3929 internal_a
.o_modtype
= xcoff_data (abfd
)->modtype
;
3930 if (xcoff_data (abfd
)->cputype
!= -1)
3931 internal_a
.o_cputype
= xcoff_data (abfd
)->cputype
;
3934 switch (bfd_get_arch (abfd
))
3936 case bfd_arch_rs6000
:
3937 internal_a
.o_cputype
= 4;
3939 case bfd_arch_powerpc
:
3940 if (bfd_get_mach (abfd
) == 0)
3941 internal_a
.o_cputype
= 3;
3943 internal_a
.o_cputype
= 1;
3949 internal_a
.o_maxstack
= xcoff_data (abfd
)->maxstack
;
3950 internal_a
.o_maxdata
= xcoff_data (abfd
)->maxdata
;
3954 /* now write them */
3955 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
3960 bfd_size_type amount
;
3962 buff
= bfd_malloc (bfd_coff_filhsz (abfd
));
3966 coff_swap_filehdr_out (abfd
, (PTR
) & internal_f
, (PTR
) buff
);
3967 amount
= bfd_write ((PTR
) buff
, 1, bfd_coff_filhsz (abfd
), abfd
);
3971 if (amount
!= bfd_coff_filhsz (abfd
))
3975 if (abfd
->flags
& EXEC_P
)
3977 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
3978 include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)) */
3980 bfd_size_type amount
;
3982 buff
= bfd_malloc (bfd_coff_aoutsz (abfd
));
3986 coff_swap_aouthdr_out (abfd
, (PTR
) & internal_a
, (PTR
) buff
);
3987 amount
= bfd_write ((PTR
) buff
, 1, bfd_coff_aoutsz (abfd
), abfd
);
3991 if (amount
!= bfd_coff_aoutsz (abfd
))
4000 /* XCOFF seems to always write at least a small a.out header. */
4001 coff_swap_aouthdr_out (abfd
, (PTR
) &internal_a
, (PTR
) &buff
);
4002 if (xcoff_data (abfd
)->full_aouthdr
)
4003 size
= bfd_coff_aoutsz (abfd
);
4005 size
= SMALL_AOUTSZ
;
4006 if (bfd_write ((PTR
) &buff
, 1, size
, abfd
) != size
)
4015 coff_set_section_contents (abfd
, section
, location
, offset
, count
)
4020 bfd_size_type count
;
4022 if (abfd
->output_has_begun
== false) /* set by bfd.c handler */
4024 if (! coff_compute_section_file_positions (abfd
))
4028 #if defined(_LIB) && !defined(TARG_AUX)
4030 /* The physical address field of a .lib section is used to hold the
4031 number of shared libraries in the section. This code counts the
4032 number of sections being written, and increments the lma field
4035 I have found no documentation on the contents of this section.
4036 Experimentation indicates that the section contains zero or more
4037 records, each of which has the following structure:
4039 - a (four byte) word holding the length of this record, in words,
4040 - a word that always seems to be set to "2",
4041 - the path to a shared library, null-terminated and then padded
4042 to a whole word boundary.
4044 bfd_assert calls have been added to alert if an attempt is made
4045 to write a section which doesn't follow these assumptions. The
4046 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4047 <robertl@arnet.com> (Thanks!).
4049 Gvran Uddeborg <gvran@uddeborg.pp.se> */
4051 if (strcmp (section
->name
, _LIB
) == 0)
4053 bfd_byte
*rec
, *recend
;
4055 rec
= (bfd_byte
*) location
;
4056 recend
= rec
+ count
;
4057 while (rec
< recend
)
4060 rec
+= bfd_get_32 (abfd
, rec
) * 4;
4063 BFD_ASSERT (rec
== recend
);
4068 /* Don't write out bss sections - one way to do this is to
4069 see if the filepos has not been set. */
4070 if (section
->filepos
== 0)
4073 if (bfd_seek (abfd
, (file_ptr
) (section
->filepos
+ offset
), SEEK_SET
) != 0)
4078 return (bfd_write (location
, 1, count
, abfd
) == count
) ? true : false;
4084 coff_close_and_cleanup (abfd
)
4087 if (!bfd_read_p (abfd
))
4088 switch (abfd
->format
)
4091 if (!_bfd_write_archive_contents (abfd
))
4095 if (!coff_write_object_contents (abfd
))
4099 bfd_set_error (bfd_error_invalid_operation
);
4103 /* We depend on bfd_close to free all the memory on the objalloc. */
4110 buy_and_read (abfd
, where
, seek_direction
, size
)
4116 PTR area
= (PTR
) bfd_alloc (abfd
, size
);
4119 if (bfd_seek (abfd
, where
, seek_direction
) != 0
4120 || bfd_read (area
, 1, size
, abfd
) != size
)
4123 } /* buy_and_read() */
4129 Creating the linenumber table is done by reading in the entire
4130 coff linenumber table, and creating another table for internal use.
4132 A coff linenumber table is structured so that each function
4133 is marked as having a line number of 0. Each line within the
4134 function is an offset from the first line in the function. The
4135 base of the line number information for the table is stored in
4136 the symbol associated with the function.
4138 Note: The PE format uses line number 0 for a flag indicating a
4141 The information is copied from the external to the internal
4142 table, and each symbol which marks a function is marked by
4145 How does this work ?
4150 coff_slurp_line_table (abfd
, asect
)
4154 LINENO
*native_lineno
;
4155 alent
*lineno_cache
;
4157 BFD_ASSERT (asect
->lineno
== (alent
*) NULL
);
4159 native_lineno
= (LINENO
*) buy_and_read (abfd
,
4160 asect
->line_filepos
,
4162 (size_t) (bfd_coff_linesz (abfd
) *
4163 asect
->lineno_count
));
4165 (alent
*) bfd_alloc (abfd
, (size_t) ((asect
->lineno_count
+ 1) * sizeof (alent
)));
4166 if (lineno_cache
== NULL
)
4170 unsigned int counter
= 0;
4171 alent
*cache_ptr
= lineno_cache
;
4172 LINENO
*src
= native_lineno
;
4174 while (counter
< asect
->lineno_count
)
4176 struct internal_lineno dst
;
4177 bfd_coff_swap_lineno_in (abfd
, src
, &dst
);
4178 cache_ptr
->line_number
= dst
.l_lnno
;
4180 if (cache_ptr
->line_number
== 0)
4184 coff_symbol_type
*sym
;
4187 symndx
= dst
.l_addr
.l_symndx
;
4189 || (unsigned long) symndx
>= obj_raw_syment_count (abfd
))
4191 (*_bfd_error_handler
)
4192 (_("%s: warning: illegal symbol index %ld in line numbers"),
4193 bfd_get_filename (abfd
), dst
.l_addr
.l_symndx
);
4197 /* FIXME: We should not be casting between ints and
4198 pointers like this. */
4199 sym
= ((coff_symbol_type
*)
4200 ((symndx
+ obj_raw_syments (abfd
))
4201 ->u
.syment
._n
._n_n
._n_zeroes
));
4202 cache_ptr
->u
.sym
= (asymbol
*) sym
;
4203 if (sym
->lineno
!= NULL
&& ! warned
)
4205 (*_bfd_error_handler
)
4206 (_("%s: warning: duplicate line number information for `%s'"),
4207 bfd_get_filename (abfd
),
4208 bfd_asymbol_name (&sym
->symbol
));
4210 sym
->lineno
= cache_ptr
;
4214 cache_ptr
->u
.offset
= dst
.l_addr
.l_paddr
4215 - bfd_section_vma (abfd
, asect
);
4216 } /* If no linenumber expect a symbol index */
4222 cache_ptr
->line_number
= 0;
4225 asect
->lineno
= lineno_cache
;
4226 /* FIXME, free native_lineno here, or use alloca or something. */
4230 /* Slurp in the symbol table, converting it to generic form. Note
4231 that if coff_relocate_section is defined, the linker will read
4232 symbols via coff_link_add_symbols, rather than via this routine. */
4235 coff_slurp_symbol_table (abfd
)
4238 combined_entry_type
*native_symbols
;
4239 coff_symbol_type
*cached_area
;
4240 unsigned int *table_ptr
;
4242 unsigned int number_of_symbols
= 0;
4244 if (obj_symbols (abfd
))
4247 /* Read in the symbol table */
4248 if ((native_symbols
= coff_get_normalized_symtab (abfd
)) == NULL
)
4253 /* Allocate enough room for all the symbols in cached form */
4254 cached_area
= ((coff_symbol_type
*)
4256 (obj_raw_syment_count (abfd
)
4257 * sizeof (coff_symbol_type
))));
4259 if (cached_area
== NULL
)
4261 table_ptr
= ((unsigned int *)
4263 (obj_raw_syment_count (abfd
)
4264 * sizeof (unsigned int))));
4266 if (table_ptr
== NULL
)
4270 coff_symbol_type
*dst
= cached_area
;
4271 unsigned int last_native_index
= obj_raw_syment_count (abfd
);
4272 unsigned int this_index
= 0;
4273 while (this_index
< last_native_index
)
4275 combined_entry_type
*src
= native_symbols
+ this_index
;
4276 table_ptr
[this_index
] = number_of_symbols
;
4277 dst
->symbol
.the_bfd
= abfd
;
4279 dst
->symbol
.name
= (char *) (src
->u
.syment
._n
._n_n
._n_offset
);
4280 /* We use the native name field to point to the cached field. */
4281 src
->u
.syment
._n
._n_n
._n_zeroes
= (long) dst
;
4282 dst
->symbol
.section
= coff_section_from_bfd_index (abfd
,
4283 src
->u
.syment
.n_scnum
);
4284 dst
->symbol
.flags
= 0;
4285 dst
->done_lineno
= false;
4287 switch (src
->u
.syment
.n_sclass
)
4292 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
4293 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
4294 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4296 /* Fall through to next case */
4304 case C_THUMBEXTFUNC
:
4310 case C_SYSTEM
: /* System Wide variable */
4313 /* In PE, 0x68 (104) denotes a section symbol */
4315 /* In PE, 0x69 (105) denotes a weak external symbol. */
4318 switch (coff_classify_symbol (abfd
, &src
->u
.syment
))
4320 case COFF_SYMBOL_GLOBAL
:
4321 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
4322 #if defined COFF_WITH_PE
4323 /* PE sets the symbol to a value relative to the
4324 start of the section. */
4325 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4327 dst
->symbol
.value
= (src
->u
.syment
.n_value
4328 - dst
->symbol
.section
->vma
);
4330 if (ISFCN ((src
->u
.syment
.n_type
)))
4332 /* A function ext does not go at the end of a
4334 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4338 case COFF_SYMBOL_COMMON
:
4339 dst
->symbol
.section
= bfd_com_section_ptr
;
4340 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4343 case COFF_SYMBOL_UNDEFINED
:
4344 dst
->symbol
.section
= bfd_und_section_ptr
;
4345 dst
->symbol
.value
= 0;
4348 case COFF_SYMBOL_PE_SECTION
:
4349 dst
->symbol
.flags
|= BSF_EXPORT
| BSF_SECTION_SYM
;
4350 dst
->symbol
.value
= 0;
4353 case COFF_SYMBOL_LOCAL
:
4354 dst
->symbol
.flags
= BSF_LOCAL
;
4355 #if defined COFF_WITH_PE
4356 /* PE sets the symbol to a value relative to the
4357 start of the section. */
4358 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4360 dst
->symbol
.value
= (src
->u
.syment
.n_value
4361 - dst
->symbol
.section
->vma
);
4363 if (ISFCN ((src
->u
.syment
.n_type
)))
4364 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4369 /* A symbol with a csect entry should not go at the end. */
4370 if (src
->u
.syment
.n_numaux
> 0)
4371 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
4375 if (src
->u
.syment
.n_sclass
== C_NT_WEAK
)
4376 dst
->symbol
.flags
= BSF_WEAK
;
4377 if (src
->u
.syment
.n_sclass
== C_SECTION
4378 && src
->u
.syment
.n_scnum
> 0)
4380 dst
->symbol
.flags
= BSF_LOCAL
;
4384 if (src
->u
.syment
.n_sclass
== C_WEAKEXT
)
4385 dst
->symbol
.flags
= BSF_WEAK
;
4389 case C_STAT
: /* static */
4391 case C_LEAFSTAT
: /* static leaf procedure */
4394 case C_THUMBSTAT
: /* Thumb static */
4395 case C_THUMBLABEL
: /* Thumb label */
4396 case C_THUMBSTATFUNC
:/* Thumb static function */
4398 case C_LABEL
: /* label */
4399 if (src
->u
.syment
.n_scnum
== N_DEBUG
)
4400 dst
->symbol
.flags
= BSF_DEBUGGING
;
4402 dst
->symbol
.flags
= BSF_LOCAL
;
4404 /* Base the value as an index from the base of the
4405 section, if there is one. */
4406 if (dst
->symbol
.section
)
4408 #if defined COFF_WITH_PE
4409 /* PE sets the symbol to a value relative to the
4410 start of the section. */
4411 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4413 dst
->symbol
.value
= (src
->u
.syment
.n_value
4414 - dst
->symbol
.section
->vma
);
4418 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4421 case C_MOS
: /* member of structure */
4422 case C_EOS
: /* end of structure */
4423 #ifdef NOTDEF /* C_AUTOARG has the same value */
4425 case C_GLBLREG
: /* A29k-specific storage class */
4428 case C_REGPARM
: /* register parameter */
4429 case C_REG
: /* register variable */
4430 /* C_AUTOARG conflictes with TI COFF C_UEXT */
4431 #if !defined (TIC80COFF) && !defined (TICOFF)
4433 case C_AUTOARG
: /* 960-specific storage class */
4436 case C_TPDEF
: /* type definition */
4438 case C_AUTO
: /* automatic variable */
4439 case C_FIELD
: /* bit field */
4440 case C_ENTAG
: /* enumeration tag */
4441 case C_MOE
: /* member of enumeration */
4442 case C_MOU
: /* member of union */
4443 case C_UNTAG
: /* union tag */
4444 dst
->symbol
.flags
= BSF_DEBUGGING
;
4445 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4448 case C_FILE
: /* file name */
4449 case C_STRTAG
: /* structure tag */
4464 dst
->symbol
.flags
= BSF_DEBUGGING
;
4465 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4469 case C_BINCL
: /* beginning of include file */
4470 case C_EINCL
: /* ending of include file */
4471 /* The value is actually a pointer into the line numbers
4472 of the file. We locate the line number entry, and
4473 set the section to the section which contains it, and
4474 the value to the index in that section. */
4478 dst
->symbol
.flags
= BSF_DEBUGGING
;
4479 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4480 if (sec
->line_filepos
<= (file_ptr
) src
->u
.syment
.n_value
4481 && ((file_ptr
) (sec
->line_filepos
4482 + sec
->lineno_count
* bfd_coff_linesz (abfd
))
4483 > (file_ptr
) src
->u
.syment
.n_value
))
4486 dst
->symbol
.value
= 0;
4489 dst
->symbol
.section
= sec
;
4490 dst
->symbol
.value
= ((src
->u
.syment
.n_value
4491 - sec
->line_filepos
)
4492 / bfd_coff_linesz (abfd
));
4499 dst
->symbol
.flags
= BSF_DEBUGGING
;
4501 /* The value is actually a symbol index. Save a pointer
4502 to the symbol instead of the index. FIXME: This
4503 should use a union. */
4504 src
->u
.syment
.n_value
=
4505 (long) (native_symbols
+ src
->u
.syment
.n_value
);
4506 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4511 case C_BLOCK
: /* ".bb" or ".eb" */
4512 case C_FCN
: /* ".bf" or ".ef" (or PE ".lf") */
4513 case C_EFCN
: /* physical end of function */
4514 #if defined COFF_WITH_PE
4515 /* PE sets the symbol to a value relative to the start
4517 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4518 if (strcmp (dst
->symbol
.name
, ".bf") != 0)
4520 /* PE uses funny values for .ef and .lf; don't
4522 dst
->symbol
.flags
= BSF_DEBUGGING
;
4525 dst
->symbol
.flags
= BSF_DEBUGGING
| BSF_DEBUGGING_RELOC
;
4527 /* Base the value as an index from the base of the
4529 dst
->symbol
.flags
= BSF_LOCAL
;
4530 dst
->symbol
.value
= (src
->u
.syment
.n_value
4531 - dst
->symbol
.section
->vma
);
4535 case C_STATLAB
: /* Static load time label */
4536 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4537 dst
->symbol
.flags
= BSF_GLOBAL
;
4541 /* PE DLLs sometimes have zeroed out symbols for some
4542 reason. Just ignore them without a warning. */
4543 if (src
->u
.syment
.n_type
== 0
4544 && src
->u
.syment
.n_value
== 0
4545 && src
->u
.syment
.n_scnum
== 0)
4548 case C_EXTDEF
: /* external definition */
4549 case C_ULABEL
: /* undefined label */
4550 case C_USTATIC
: /* undefined static */
4551 #ifndef COFF_WITH_PE
4552 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4553 class to represent a section symbol */
4554 case C_LINE
: /* line # reformatted as symbol table entry */
4555 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4556 case C_ALIAS
: /* duplicate tag */
4558 /* New storage classes for TI COFF */
4559 #if defined(TIC80COFF) || defined(TICOFF)
4560 case C_UEXT
: /* Tentative external definition */
4562 case C_EXTLAB
: /* External load time label */
4563 case C_HIDDEN
: /* ext symbol in dmert public lib */
4565 (*_bfd_error_handler
)
4566 (_("%s: Unrecognized storage class %d for %s symbol `%s'"),
4567 bfd_get_filename (abfd
), src
->u
.syment
.n_sclass
,
4568 dst
->symbol
.section
->name
, dst
->symbol
.name
);
4569 dst
->symbol
.flags
= BSF_DEBUGGING
;
4570 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4574 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4578 dst
->symbol
.udata
.i
= 0;
4579 dst
->lineno
= (alent
*) NULL
;
4580 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
4582 number_of_symbols
++;
4583 } /* walk the native symtab */
4584 } /* bfdize the native symtab */
4586 obj_symbols (abfd
) = cached_area
;
4587 obj_raw_syments (abfd
) = native_symbols
;
4589 bfd_get_symcount (abfd
) = number_of_symbols
;
4590 obj_convert (abfd
) = table_ptr
;
4591 /* Slurp the line tables for each section too */
4597 coff_slurp_line_table (abfd
, p
);
4602 } /* coff_slurp_symbol_table() */
4604 /* Classify a COFF symbol. A couple of targets have globally visible
4605 symbols which are not class C_EXT, and this handles those. It also
4606 recognizes some special PE cases. */
4608 static enum coff_symbol_classification
4609 coff_classify_symbol (abfd
, syment
)
4611 struct internal_syment
*syment
;
4613 /* FIXME: This partially duplicates the switch in
4614 coff_slurp_symbol_table. */
4615 switch (syment
->n_sclass
)
4624 case C_THUMBEXTFUNC
:
4632 if (syment
->n_scnum
== 0)
4634 if (syment
->n_value
== 0)
4635 return COFF_SYMBOL_UNDEFINED
;
4637 return COFF_SYMBOL_COMMON
;
4639 return COFF_SYMBOL_GLOBAL
;
4646 if (syment
->n_sclass
== C_STAT
)
4648 if (syment
->n_scnum
== 0)
4650 /* The Microsoft compiler sometimes generates these if a
4651 small static function is inlined every time it is used.
4652 The function is discarded, but the symbol table entry
4654 return COFF_SYMBOL_LOCAL
;
4657 #ifdef STRICT_PE_FORMAT
4658 /* This is correct for Microsoft generated objects, but it
4659 breaks gas generated objects. */
4661 if (syment
->n_value
== 0)
4664 char buf
[SYMNMLEN
+ 1];
4666 sec
= coff_section_from_bfd_index (abfd
, syment
->n_scnum
);
4668 && (strcmp (bfd_get_section_name (abfd
, sec
),
4669 _bfd_coff_internal_syment_name (abfd
, syment
, buf
))
4671 return COFF_SYMBOL_PE_SECTION
;
4675 return COFF_SYMBOL_LOCAL
;
4678 if (syment
->n_sclass
== C_SECTION
)
4680 /* In some cases in a DLL generated by the Microsoft linker, the
4681 n_value field will contain garbage. FIXME: This should
4682 probably be handled by the swapping function instead. */
4683 syment
->n_value
= 0;
4684 if (syment
->n_scnum
== 0)
4685 return COFF_SYMBOL_UNDEFINED
;
4686 return COFF_SYMBOL_PE_SECTION
;
4688 #endif /* COFF_WITH_PE */
4690 /* If it is not a global symbol, we presume it is a local symbol. */
4692 if (syment
->n_scnum
== 0)
4694 char buf
[SYMNMLEN
+ 1];
4696 (*_bfd_error_handler
)
4697 (_("warning: %s: local symbol `%s' has no section"),
4698 bfd_get_filename (abfd
),
4699 _bfd_coff_internal_syment_name (abfd
, syment
, buf
));
4702 return COFF_SYMBOL_LOCAL
;
4709 Coff relocations are easily transformed into the internal BFD form
4712 Reading a coff relocation table is done in the following stages:
4714 o Read the entire coff relocation table into memory.
4716 o Process each relocation in turn; first swap it from the
4717 external to the internal form.
4719 o Turn the symbol referenced in the relocation's symbol index
4720 into a pointer into the canonical symbol table.
4721 This table is the same as the one returned by a call to
4722 @code{bfd_canonicalize_symtab}. The back end will call that
4723 routine and save the result if a canonicalization hasn't been done.
4725 o The reloc index is turned into a pointer to a howto
4726 structure, in a back end specific way. For instance, the 386
4727 and 960 use the @code{r_type} to directly produce an index
4728 into a howto table vector; the 88k subtracts a number from the
4729 @code{r_type} field and creates an addend field.
4734 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
4736 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
4737 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
4738 coffsym = (obj_symbols (abfd) \
4739 + (cache_ptr->sym_ptr_ptr - symbols)); \
4741 coffsym = coff_symbol_from (abfd, ptr); \
4742 if (coffsym != (coff_symbol_type *) NULL \
4743 && coffsym->native->u.syment.n_scnum == 0) \
4744 cache_ptr->addend = 0; \
4745 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
4746 && ptr->section != (asection *) NULL) \
4747 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
4749 cache_ptr->addend = 0; \
4754 coff_slurp_reloc_table (abfd
, asect
, symbols
)
4759 RELOC
*native_relocs
;
4760 arelent
*reloc_cache
;
4765 if (asect
->relocation
)
4767 if (asect
->reloc_count
== 0)
4769 if (asect
->flags
& SEC_CONSTRUCTOR
)
4771 if (!coff_slurp_symbol_table (abfd
))
4774 (RELOC
*) buy_and_read (abfd
,
4777 (size_t) (bfd_coff_relsz (abfd
) *
4778 asect
->reloc_count
));
4779 reloc_cache
= (arelent
*)
4780 bfd_alloc (abfd
, (size_t) (asect
->reloc_count
* sizeof (arelent
)));
4782 if (reloc_cache
== NULL
)
4785 for (idx
= 0; idx
< asect
->reloc_count
; idx
++)
4787 struct internal_reloc dst
;
4788 struct external_reloc
*src
;
4789 #ifndef RELOC_PROCESSING
4793 cache_ptr
= reloc_cache
+ idx
;
4794 src
= native_relocs
+ idx
;
4796 coff_swap_reloc_in (abfd
, src
, &dst
);
4798 #ifdef RELOC_PROCESSING
4799 RELOC_PROCESSING (cache_ptr
, &dst
, symbols
, abfd
, asect
);
4801 cache_ptr
->address
= dst
.r_vaddr
;
4803 if (dst
.r_symndx
!= -1)
4805 if (dst
.r_symndx
< 0 || dst
.r_symndx
>= obj_conv_table_size (abfd
))
4807 (*_bfd_error_handler
)
4808 (_("%s: warning: illegal symbol index %ld in relocs"),
4809 bfd_get_filename (abfd
), dst
.r_symndx
);
4810 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
4815 cache_ptr
->sym_ptr_ptr
= (symbols
4816 + obj_convert (abfd
)[dst
.r_symndx
]);
4817 ptr
= *(cache_ptr
->sym_ptr_ptr
);
4822 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
4826 /* The symbols definitions that we have read in have been
4827 relocated as if their sections started at 0. But the offsets
4828 refering to the symbols in the raw data have not been
4829 modified, so we have to have a negative addend to compensate.
4831 Note that symbols which used to be common must be left alone */
4833 /* Calculate any reloc addend by looking at the symbol */
4834 CALC_ADDEND (abfd
, ptr
, dst
, cache_ptr
);
4836 cache_ptr
->address
-= asect
->vma
;
4837 /* !! cache_ptr->section = (asection *) NULL;*/
4839 /* Fill in the cache_ptr->howto field from dst.r_type */
4840 RTYPE2HOWTO (cache_ptr
, &dst
);
4841 #endif /* RELOC_PROCESSING */
4843 if (cache_ptr
->howto
== NULL
)
4845 (*_bfd_error_handler
)
4846 (_("%s: illegal relocation type %d at address 0x%lx"),
4847 bfd_get_filename (abfd
), dst
.r_type
, (long) dst
.r_vaddr
);
4848 bfd_set_error (bfd_error_bad_value
);
4853 asect
->relocation
= reloc_cache
;
4857 #ifndef coff_rtype_to_howto
4860 /* Get the howto structure for a reloc. This is only used if the file
4861 including this one defines coff_relocate_section to be
4862 _bfd_coff_generic_relocate_section, so it is OK if it does not
4863 always work. It is the responsibility of the including file to
4864 make sure it is reasonable if it is needed. */
4866 static reloc_howto_type
*coff_rtype_to_howto
4867 PARAMS ((bfd
*, asection
*, struct internal_reloc
*,
4868 struct coff_link_hash_entry
*, struct internal_syment
*,
4872 static reloc_howto_type
*
4873 coff_rtype_to_howto (abfd
, sec
, rel
, h
, sym
, addendp
)
4874 bfd
*abfd ATTRIBUTE_UNUSED
;
4875 asection
*sec ATTRIBUTE_UNUSED
;
4876 struct internal_reloc
*rel
;
4877 struct coff_link_hash_entry
*h ATTRIBUTE_UNUSED
;
4878 struct internal_syment
*sym ATTRIBUTE_UNUSED
;
4879 bfd_vma
*addendp ATTRIBUTE_UNUSED
;
4883 RTYPE2HOWTO (&genrel
, rel
);
4884 return genrel
.howto
;
4887 #else /* ! defined (RTYPE2HOWTO) */
4889 #define coff_rtype_to_howto NULL
4891 #endif /* ! defined (RTYPE2HOWTO) */
4892 #endif /* ! defined (coff_rtype_to_howto) */
4894 /* This is stupid. This function should be a boolean predicate. */
4896 coff_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
4902 arelent
*tblptr
= section
->relocation
;
4903 unsigned int count
= 0;
4905 if (section
->flags
& SEC_CONSTRUCTOR
)
4907 /* this section has relocs made up by us, they are not in the
4908 file, so take them out of their chain and place them into
4909 the data area provided */
4910 arelent_chain
*chain
= section
->constructor_chain
;
4911 for (count
= 0; count
< section
->reloc_count
; count
++)
4913 *relptr
++ = &chain
->relent
;
4914 chain
= chain
->next
;
4920 if (! coff_slurp_reloc_table (abfd
, section
, symbols
))
4923 tblptr
= section
->relocation
;
4925 for (; count
++ < section
->reloc_count
;)
4926 *relptr
++ = tblptr
++;
4930 return section
->reloc_count
;
4935 coff_sym_filepos (abfd
)
4938 return obj_sym_filepos (abfd
);
4942 #ifndef coff_reloc16_estimate
4943 #define coff_reloc16_estimate dummy_reloc16_estimate
4945 static int dummy_reloc16_estimate
4946 PARAMS ((bfd
*, asection
*, arelent
*, unsigned int,
4947 struct bfd_link_info
*));
4950 dummy_reloc16_estimate (abfd
, input_section
, reloc
, shrink
, link_info
)
4951 bfd
*abfd ATTRIBUTE_UNUSED
;
4952 asection
*input_section ATTRIBUTE_UNUSED
;
4953 arelent
*reloc ATTRIBUTE_UNUSED
;
4954 unsigned int shrink ATTRIBUTE_UNUSED
;
4955 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
4963 #ifndef coff_reloc16_extra_cases
4965 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
4967 /* This works even if abort is not declared in any header file. */
4969 static void dummy_reloc16_extra_cases
4970 PARAMS ((bfd
*, struct bfd_link_info
*, struct bfd_link_order
*, arelent
*,
4971 bfd_byte
*, unsigned int *, unsigned int *));
4974 dummy_reloc16_extra_cases (abfd
, link_info
, link_order
, reloc
, data
, src_ptr
,
4976 bfd
*abfd ATTRIBUTE_UNUSED
;
4977 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
4978 struct bfd_link_order
*link_order ATTRIBUTE_UNUSED
;
4979 arelent
*reloc ATTRIBUTE_UNUSED
;
4980 bfd_byte
*data ATTRIBUTE_UNUSED
;
4981 unsigned int *src_ptr ATTRIBUTE_UNUSED
;
4982 unsigned int *dst_ptr ATTRIBUTE_UNUSED
;
4988 /* If coff_relocate_section is defined, we can use the optimized COFF
4989 backend linker. Otherwise we must continue to use the old linker. */
4990 #ifdef coff_relocate_section
4991 #ifndef coff_bfd_link_hash_table_create
4992 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
4994 #ifndef coff_bfd_link_add_symbols
4995 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
4997 #ifndef coff_bfd_final_link
4998 #define coff_bfd_final_link _bfd_coff_final_link
5000 #else /* ! defined (coff_relocate_section) */
5001 #define coff_relocate_section NULL
5002 #ifndef coff_bfd_link_hash_table_create
5003 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
5005 #ifndef coff_bfd_link_add_symbols
5006 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
5008 #define coff_bfd_final_link _bfd_generic_final_link
5009 #endif /* ! defined (coff_relocate_section) */
5011 #define coff_bfd_link_split_section _bfd_generic_link_split_section
5013 #ifndef coff_start_final_link
5014 #define coff_start_final_link NULL
5017 #ifndef coff_adjust_symndx
5018 #define coff_adjust_symndx NULL
5021 #ifndef coff_link_add_one_symbol
5022 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5025 #ifndef coff_link_output_has_begun
5027 static boolean coff_link_output_has_begun
5028 PARAMS ((bfd
*, struct coff_final_link_info
*));
5031 coff_link_output_has_begun (abfd
, info
)
5033 struct coff_final_link_info
* info ATTRIBUTE_UNUSED
;
5035 return abfd
->output_has_begun
;
5039 #ifndef coff_final_link_postscript
5041 static boolean coff_final_link_postscript
5042 PARAMS ((bfd
*, struct coff_final_link_info
*));
5045 coff_final_link_postscript (abfd
, pfinfo
)
5046 bfd
* abfd ATTRIBUTE_UNUSED
;
5047 struct coff_final_link_info
* pfinfo ATTRIBUTE_UNUSED
;
5053 #ifndef coff_SWAP_aux_in
5054 #define coff_SWAP_aux_in coff_swap_aux_in
5056 #ifndef coff_SWAP_sym_in
5057 #define coff_SWAP_sym_in coff_swap_sym_in
5059 #ifndef coff_SWAP_lineno_in
5060 #define coff_SWAP_lineno_in coff_swap_lineno_in
5062 #ifndef coff_SWAP_aux_out
5063 #define coff_SWAP_aux_out coff_swap_aux_out
5065 #ifndef coff_SWAP_sym_out
5066 #define coff_SWAP_sym_out coff_swap_sym_out
5068 #ifndef coff_SWAP_lineno_out
5069 #define coff_SWAP_lineno_out coff_swap_lineno_out
5071 #ifndef coff_SWAP_reloc_out
5072 #define coff_SWAP_reloc_out coff_swap_reloc_out
5074 #ifndef coff_SWAP_filehdr_out
5075 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5077 #ifndef coff_SWAP_aouthdr_out
5078 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5080 #ifndef coff_SWAP_scnhdr_out
5081 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5083 #ifndef coff_SWAP_reloc_in
5084 #define coff_SWAP_reloc_in coff_swap_reloc_in
5086 #ifndef coff_SWAP_filehdr_in
5087 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5089 #ifndef coff_SWAP_aouthdr_in
5090 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5092 #ifndef coff_SWAP_scnhdr_in
5093 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5096 static const bfd_coff_backend_data bfd_coff_std_swap_table
=
5098 coff_SWAP_aux_in
, coff_SWAP_sym_in
, coff_SWAP_lineno_in
,
5099 coff_SWAP_aux_out
, coff_SWAP_sym_out
,
5100 coff_SWAP_lineno_out
, coff_SWAP_reloc_out
,
5101 coff_SWAP_filehdr_out
, coff_SWAP_aouthdr_out
,
5102 coff_SWAP_scnhdr_out
,
5103 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
, FILNMLEN
,
5104 #ifdef COFF_LONG_FILENAMES
5109 #ifdef COFF_LONG_SECTION_NAMES
5114 COFF_DEFAULT_SECTION_ALIGNMENT_POWER
,
5115 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5120 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5125 coff_SWAP_filehdr_in
, coff_SWAP_aouthdr_in
, coff_SWAP_scnhdr_in
,
5126 coff_SWAP_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
5127 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
5128 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
5129 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
5130 coff_classify_symbol
, coff_compute_section_file_positions
,
5131 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
5132 coff_adjust_symndx
, coff_link_add_one_symbol
,
5133 coff_link_output_has_begun
, coff_final_link_postscript
5136 #ifndef coff_close_and_cleanup
5137 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5140 #ifndef coff_bfd_free_cached_info
5141 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5144 #ifndef coff_get_section_contents
5145 #define coff_get_section_contents _bfd_generic_get_section_contents
5148 #ifndef coff_bfd_copy_private_symbol_data
5149 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5152 #ifndef coff_bfd_copy_private_section_data
5153 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5156 #ifndef coff_bfd_copy_private_bfd_data
5157 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5160 #ifndef coff_bfd_merge_private_bfd_data
5161 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5164 #ifndef coff_bfd_set_private_flags
5165 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5168 #ifndef coff_bfd_print_private_bfd_data
5169 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5172 #ifndef coff_bfd_is_local_label_name
5173 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5176 #ifndef coff_read_minisymbols
5177 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5180 #ifndef coff_minisymbol_to_symbol
5181 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5184 /* The reloc lookup routine must be supplied by each individual COFF
5186 #ifndef coff_bfd_reloc_type_lookup
5187 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5190 #ifndef coff_bfd_get_relocated_section_contents
5191 #define coff_bfd_get_relocated_section_contents \
5192 bfd_generic_get_relocated_section_contents
5195 #ifndef coff_bfd_relax_section
5196 #define coff_bfd_relax_section bfd_generic_relax_section
5199 #ifndef coff_bfd_gc_sections
5200 #define coff_bfd_gc_sections bfd_generic_gc_sections
5203 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5204 const bfd_target VAR = \
5207 bfd_target_coff_flavour, \
5208 BFD_ENDIAN_BIG, /* data byte order is big */ \
5209 BFD_ENDIAN_BIG, /* header byte order is big */ \
5210 /* object flags */ \
5211 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5212 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5213 /* section flags */ \
5214 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5215 UNDER, /* leading symbol underscore */ \
5216 '/', /* ar_pad_char */ \
5217 15, /* ar_max_namelen */ \
5219 /* Data conversion functions. */ \
5220 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5221 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5222 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5224 /* Header conversion functions. */ \
5225 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5226 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5227 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5229 /* bfd_check_format */ \
5230 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5231 _bfd_dummy_target }, \
5232 /* bfd_set_format */ \
5233 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5234 /* bfd_write_contents */ \
5235 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5238 BFD_JUMP_TABLE_GENERIC (coff), \
5239 BFD_JUMP_TABLE_COPY (coff), \
5240 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5241 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5242 BFD_JUMP_TABLE_SYMBOLS (coff), \
5243 BFD_JUMP_TABLE_RELOCS (coff), \
5244 BFD_JUMP_TABLE_WRITE (coff), \
5245 BFD_JUMP_TABLE_LINK (coff), \
5246 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5253 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5254 const bfd_target VAR = \
5257 bfd_target_coff_flavour, \
5258 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5259 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5260 /* object flags */ \
5261 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5262 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5263 /* section flags */ \
5264 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5265 UNDER, /* leading symbol underscore */ \
5266 '/', /* ar_pad_char */ \
5267 15, /* ar_max_namelen */ \
5269 /* Data conversion functions. */ \
5270 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5271 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5272 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5273 /* Header conversion functions. */ \
5274 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5275 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5276 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5277 /* bfd_check_format */ \
5278 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5279 _bfd_dummy_target }, \
5280 /* bfd_set_format */ \
5281 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5282 /* bfd_write_contents */ \
5283 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5286 BFD_JUMP_TABLE_GENERIC (coff), \
5287 BFD_JUMP_TABLE_COPY (coff), \
5288 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5289 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5290 BFD_JUMP_TABLE_SYMBOLS (coff), \
5291 BFD_JUMP_TABLE_RELOCS (coff), \
5292 BFD_JUMP_TABLE_WRITE (coff), \
5293 BFD_JUMP_TABLE_LINK (coff), \
5294 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \