1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright (C) 1990-2017 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
22 /* Most of this hacked by Steve Chamberlain,
28 BFD supports a number of different flavours of coff format.
29 The major differences between formats are the sizes and
30 alignments of fields in structures on disk, and the occasional
33 Coff in all its varieties is implemented with a few common
34 files and a number of implementation specific files. For
35 example, The 88k bcs coff format is implemented in the file
36 @file{coff-m88k.c}. This file @code{#include}s
37 @file{coff/m88k.h} which defines the external structure of the
38 coff format for the 88k, and @file{coff/internal.h} which
39 defines the internal structure. @file{coff-m88k.c} also
40 defines the relocations used by the 88k format
43 The Intel i960 processor version of coff is implemented in
44 @file{coff-i960.c}. This file has the same structure as
45 @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
46 rather than @file{coff-m88k.h}.
49 Porting to a new version of coff
51 The recommended method is to select from the existing
52 implementations the version of coff which is most like the one
53 you want to use. For example, we'll say that i386 coff is
54 the one you select, and that your coff flavour is called foo.
55 Copy @file{i386coff.c} to @file{foocoff.c}, copy
56 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
57 and add the lines to @file{targets.c} and @file{Makefile.in}
58 so that your new back end is used. Alter the shapes of the
59 structures in @file{../include/coff/foo.h} so that they match
60 what you need. You will probably also have to add
61 @code{#ifdef}s to the code in @file{coff/internal.h} and
62 @file{coffcode.h} if your version of coff is too wild.
64 You can verify that your new BFD backend works quite simply by
65 building @file{objdump} from the @file{binutils} directory,
66 and making sure that its version of what's going on and your
67 host system's idea (assuming it has the pretty standard coff
68 dump utility, usually called @code{att-dump} or just
69 @code{dump}) are the same. Then clean up your code, and send
70 what you've done to Cygnus. Then your stuff will be in the
71 next release, and you won't have to keep integrating it.
74 How the coff backend works
79 The Coff backend is split into generic routines that are
80 applicable to any Coff target and routines that are specific
81 to a particular target. The target-specific routines are
82 further split into ones which are basically the same for all
83 Coff targets except that they use the external symbol format
84 or use different values for certain constants.
86 The generic routines are in @file{coffgen.c}. These routines
87 work for any Coff target. They use some hooks into the target
88 specific code; the hooks are in a @code{bfd_coff_backend_data}
89 structure, one of which exists for each target.
91 The essentially similar target-specific routines are in
92 @file{coffcode.h}. This header file includes executable C code.
93 The various Coff targets first include the appropriate Coff
94 header file, make any special defines that are needed, and
95 then include @file{coffcode.h}.
97 Some of the Coff targets then also have additional routines in
98 the target source file itself.
100 For example, @file{coff-i960.c} includes
101 @file{coff/internal.h} and @file{coff/i960.h}. It then
102 defines a few constants, such as @code{I960}, and includes
103 @file{coffcode.h}. Since the i960 has complex relocation
104 types, @file{coff-i960.c} also includes some code to
105 manipulate the i960 relocs. This code is not in
106 @file{coffcode.h} because it would not be used by any other
110 Coff long section names
112 In the standard Coff object format, section names are limited to
113 the eight bytes available in the @code{s_name} field of the
114 @code{SCNHDR} section header structure. The format requires the
115 field to be NUL-padded, but not necessarily NUL-terminated, so
116 the longest section names permitted are a full eight characters.
118 The Microsoft PE variants of the Coff object file format add
119 an extension to support the use of long section names. This
120 extension is defined in section 4 of the Microsoft PE/COFF
121 specification (rev 8.1). If a section name is too long to fit
122 into the section header's @code{s_name} field, it is instead
123 placed into the string table, and the @code{s_name} field is
124 filled with a slash ("/") followed by the ASCII decimal
125 representation of the offset of the full name relative to the
128 Note that this implies that the extension can only be used in object
129 files, as executables do not contain a string table. The standard
130 specifies that long section names from objects emitted into executable
131 images are to be truncated.
133 However, as a GNU extension, BFD can generate executable images
134 that contain a string table and long section names. This
135 would appear to be technically valid, as the standard only says
136 that Coff debugging information is deprecated, not forbidden,
137 and in practice it works, although some tools that parse PE files
138 expecting the MS standard format may become confused; @file{PEview} is
141 The functionality is supported in BFD by code implemented under
142 the control of the macro @code{COFF_LONG_SECTION_NAMES}. If not
143 defined, the format does not support long section names in any way.
144 If defined, it is used to initialise a flag,
145 @code{_bfd_coff_long_section_names}, and a hook function pointer,
146 @code{_bfd_coff_set_long_section_names}, in the Coff backend data
147 structure. The flag controls the generation of long section names
148 in output BFDs at runtime; if it is false, as it will be by default
149 when generating an executable image, long section names are truncated;
150 if true, the long section names extension is employed. The hook
151 points to a function that allows the value of the flag to be altered
152 at runtime, on formats that support long section names at all; on
153 other formats it points to a stub that returns an error indication.
155 With input BFDs, the flag is set according to whether any long section
156 names are detected while reading the section headers. For a completely
157 new BFD, the flag is set to the default for the target format. This
158 information can be used by a client of the BFD library when deciding
159 what output format to generate, and means that a BFD that is opened
160 for read and subsequently converted to a writeable BFD and modified
161 in-place will retain whatever format it had on input.
163 If @code{COFF_LONG_SECTION_NAMES} is simply defined (blank), or is
164 defined to the value "1", then long section names are enabled by
165 default; if it is defined to the value zero, they are disabled by
166 default (but still accepted in input BFDs). The header @file{coffcode.h}
167 defines a macro, @code{COFF_DEFAULT_LONG_SECTION_NAMES}, which is
168 used in the backends to initialise the backend data structure fields
169 appropriately; see the comments for further detail.
174 Each flavour of coff supported in BFD has its own header file
175 describing the external layout of the structures. There is also
176 an internal description of the coff layout, in
177 @file{coff/internal.h}. A major function of the
178 coff backend is swapping the bytes and twiddling the bits to
179 translate the external form of the structures into the normal
180 internal form. This is all performed in the
181 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
182 elements are different sizes between different versions of
183 coff; it is the duty of the coff version specific include file
184 to override the definitions of various packing routines in
185 @file{coffcode.h}. E.g., the size of line number entry in coff is
186 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
187 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
188 correct one. No doubt, some day someone will find a version of
189 coff which has a varying field size not catered to at the
190 moment. To port BFD, that person will have to add more @code{#defines}.
191 Three of the bit twiddling routines are exported to
192 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
193 and @code{coff_swap_lineno_in}. @code{GDB} reads the symbol
194 table on its own, but uses BFD to fix things up. More of the
195 bit twiddlers are exported for @code{gas};
196 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
197 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
198 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
199 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
200 of all the symbol table and reloc drudgery itself, thereby
201 saving the internal BFD overhead, but uses BFD to swap things
202 on the way out, making cross ports much safer. Doing so also
203 allows BFD (and thus the linker) to use the same header files
204 as @code{gas}, which makes one avenue to disaster disappear.
209 The simple canonical form for symbols used by BFD is not rich
210 enough to keep all the information available in a coff symbol
211 table. The back end gets around this problem by keeping the original
212 symbol table around, "behind the scenes".
214 When a symbol table is requested (through a call to
215 @code{bfd_canonicalize_symtab}), a request gets through to
216 @code{coff_get_normalized_symtab}. This reads the symbol table from
217 the coff file and swaps all the structures inside into the
218 internal form. It also fixes up all the pointers in the table
219 (represented in the file by offsets from the first symbol in
220 the table) into physical pointers to elements in the new
221 internal table. This involves some work since the meanings of
222 fields change depending upon context: a field that is a
223 pointer to another structure in the symbol table at one moment
224 may be the size in bytes of a structure at the next. Another
225 pass is made over the table. All symbols which mark file names
226 (<<C_FILE>> symbols) are modified so that the internal
227 string points to the value in the auxent (the real filename)
228 rather than the normal text associated with the symbol
231 At this time the symbol names are moved around. Coff stores
232 all symbols less than nine characters long physically
233 within the symbol table; longer strings are kept at the end of
234 the file in the string table. This pass moves all strings
235 into memory and replaces them with pointers to the strings.
237 The symbol table is massaged once again, this time to create
238 the canonical table used by the BFD application. Each symbol
239 is inspected in turn, and a decision made (using the
240 @code{sclass} field) about the various flags to set in the
241 @code{asymbol}. @xref{Symbols}. The generated canonical table
242 shares strings with the hidden internal symbol table.
244 Any linenumbers are read from the coff file too, and attached
245 to the symbols which own the functions the linenumbers belong to.
250 Writing a symbol to a coff file which didn't come from a coff
251 file will lose any debugging information. The @code{asymbol}
252 structure remembers the BFD from which the symbol was taken, and on
253 output the back end makes sure that the same destination target as
254 source target is present.
256 When the symbols have come from a coff file then all the
257 debugging information is preserved.
259 Symbol tables are provided for writing to the back end in a
260 vector of pointers to pointers. This allows applications like
261 the linker to accumulate and output large symbol tables
262 without having to do too much byte copying.
264 This function runs through the provided symbol table and
265 patches each symbol marked as a file place holder
266 (@code{C_FILE}) to point to the next file place holder in the
267 list. It also marks each @code{offset} field in the list with
268 the offset from the first symbol of the current symbol.
270 Another function of this procedure is to turn the canonical
271 value form of BFD into the form used by coff. Internally, BFD
272 expects symbol values to be offsets from a section base; so a
273 symbol physically at 0x120, but in a section starting at
274 0x100, would have the value 0x20. Coff expects symbols to
275 contain their final value, so symbols have their values
276 changed at this point to reflect their sum with their owning
277 section. This transformation uses the
278 <<output_section>> field of the @code{asymbol}'s
279 @code{asection} @xref{Sections}.
281 o <<coff_mangle_symbols>>
283 This routine runs though the provided symbol table and uses
284 the offsets generated by the previous pass and the pointers
285 generated when the symbol table was read in to create the
286 structured hierarchy required by coff. It changes each pointer
287 to a symbol into the index into the symbol table of the asymbol.
289 o <<coff_write_symbols>>
291 This routine runs through the symbol table and patches up the
292 symbols from their internal form into the coff way, calls the
293 bit twiddlers, and writes out the table to the file.
302 The hidden information for an <<asymbol>> is described in a
303 <<combined_entry_type>>:
307 .typedef struct coff_ptr_struct
309 . {* Remembers the offset from the first symbol in the file for
310 . this symbol. Generated by coff_renumber_symbols. *}
311 . unsigned int offset;
313 . {* Should the value of this symbol be renumbered. Used for
314 . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
315 . unsigned int fix_value : 1;
317 . {* Should the tag field of this symbol be renumbered.
318 . Created by coff_pointerize_aux. *}
319 . unsigned int fix_tag : 1;
321 . {* Should the endidx field of this symbol be renumbered.
322 . Created by coff_pointerize_aux. *}
323 . unsigned int fix_end : 1;
325 . {* Should the x_csect.x_scnlen field be renumbered.
326 . Created by coff_pointerize_aux. *}
327 . unsigned int fix_scnlen : 1;
329 . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
330 . index into the line number entries. Set by coff_slurp_symbol_table. *}
331 . unsigned int fix_line : 1;
333 . {* The container for the symbol structure as read and translated
337 . union internal_auxent auxent;
338 . struct internal_syment syment;
341 . {* Selector for the union above. *}
342 . bfd_boolean is_sym;
343 .} combined_entry_type;
346 .{* Each canonical asymbol really looks like this: *}
348 .typedef struct coff_symbol_struct
350 . {* The actual symbol which the rest of BFD works with *}
353 . {* A pointer to the hidden information for this symbol *}
354 . combined_entry_type *native;
356 . {* A pointer to the linenumber information for this symbol *}
357 . struct lineno_cache_entry *lineno;
359 . {* Have the line numbers been relocated yet ? *}
360 . bfd_boolean done_lineno;
365 #include "libiberty.h"
370 #include "coffswap.h"
373 #define STRING_SIZE_SIZE 4
375 #define DOT_DEBUG ".debug"
376 #define DOT_ZDEBUG ".zdebug"
377 #define GNU_LINKONCE_WI ".gnu.linkonce.wi."
378 #define GNU_LINKONCE_WT ".gnu.linkonce.wt."
379 #define DOT_RELOC ".reloc"
381 #if defined (COFF_LONG_SECTION_NAMES)
382 /* Needed to expand the inputs to BLANKOR1TOODD. */
383 #define COFFLONGSECTIONCATHELPER(x,y) x ## y
384 /* If the input macro Y is blank or '1', return an odd number; if it is
385 '0', return an even number. Result undefined in all other cases. */
386 #define BLANKOR1TOODD(y) COFFLONGSECTIONCATHELPER(1,y)
387 /* Defined to numerical 0 or 1 according to whether generation of long
388 section names is disabled or enabled by default. */
389 #define COFF_ENABLE_LONG_SECTION_NAMES (BLANKOR1TOODD(COFF_LONG_SECTION_NAMES) & 1)
390 /* Where long section names are supported, we allow them to be enabled
391 and disabled at runtime, so select an appropriate hook function for
392 _bfd_coff_set_long_section_names. */
393 #define COFF_LONG_SECTION_NAMES_SETTER bfd_coff_set_long_section_names_allowed
394 #else /* !defined (COFF_LONG_SECTION_NAMES) */
395 /* If long section names are not supported, this stub disallows any
396 attempt to enable them at run-time. */
397 #define COFF_LONG_SECTION_NAMES_SETTER bfd_coff_set_long_section_names_disallowed
398 #endif /* defined (COFF_LONG_SECTION_NAMES) */
400 /* Define a macro that can be used to initialise both the fields relating
401 to long section names in the backend data struct simultaneously. */
402 #if COFF_ENABLE_LONG_SECTION_NAMES
403 #define COFF_DEFAULT_LONG_SECTION_NAMES (TRUE), COFF_LONG_SECTION_NAMES_SETTER
404 #else /* !COFF_ENABLE_LONG_SECTION_NAMES */
405 #define COFF_DEFAULT_LONG_SECTION_NAMES (FALSE), COFF_LONG_SECTION_NAMES_SETTER
406 #endif /* COFF_ENABLE_LONG_SECTION_NAMES */
408 #if defined (COFF_LONG_SECTION_NAMES)
409 static bfd_boolean bfd_coff_set_long_section_names_allowed
411 #else /* !defined (COFF_LONG_SECTION_NAMES) */
412 static bfd_boolean bfd_coff_set_long_section_names_disallowed
414 #endif /* defined (COFF_LONG_SECTION_NAMES) */
415 static long sec_to_styp_flags
416 (const char *, flagword
);
417 static bfd_boolean styp_to_sec_flags
418 (bfd
*, void *, const char *, asection
*, flagword
*);
419 static bfd_boolean coff_bad_format_hook
421 static void coff_set_custom_section_alignment
422 (bfd
*, asection
*, const struct coff_section_alignment_entry
*,
424 static bfd_boolean coff_new_section_hook
426 static bfd_boolean coff_set_arch_mach_hook
428 static bfd_boolean coff_write_relocs
430 static bfd_boolean coff_set_flags
431 (bfd
*, unsigned int *, unsigned short *);
432 static bfd_boolean coff_set_arch_mach
433 (bfd
*, enum bfd_architecture
, unsigned long) ATTRIBUTE_UNUSED
;
434 static bfd_boolean coff_compute_section_file_positions
436 static bfd_boolean coff_write_object_contents
437 (bfd
*) ATTRIBUTE_UNUSED
;
438 static bfd_boolean coff_set_section_contents
439 (bfd
*, asection
*, const void *, file_ptr
, bfd_size_type
);
440 static void * buy_and_read
441 (bfd
*, file_ptr
, bfd_size_type
);
442 static bfd_boolean coff_slurp_line_table
444 static bfd_boolean coff_slurp_symbol_table
446 static enum coff_symbol_classification coff_classify_symbol
447 (bfd
*, struct internal_syment
*);
448 static bfd_boolean coff_slurp_reloc_table
449 (bfd
*, asection
*, asymbol
**);
450 static long coff_canonicalize_reloc
451 (bfd
*, asection
*, arelent
**, asymbol
**);
452 #ifndef coff_mkobject_hook
453 static void * coff_mkobject_hook
454 (bfd
*, void *, void *);
457 static flagword handle_COMDAT
458 (bfd
*, flagword
, void *, const char *, asection
*);
460 #ifdef COFF_IMAGE_WITH_PE
461 static bfd_boolean coff_read_word
462 (bfd
*, unsigned int *);
463 static unsigned int coff_compute_checksum
465 static bfd_boolean coff_apply_checksum
469 static bfd_boolean ticoff0_bad_format_hook
471 static bfd_boolean ticoff1_bad_format_hook
475 /* void warning(); */
477 #if defined (COFF_LONG_SECTION_NAMES)
479 bfd_coff_set_long_section_names_allowed (bfd
*abfd
, int enable
)
481 coff_backend_info (abfd
)->_bfd_coff_long_section_names
= enable
;
484 #else /* !defined (COFF_LONG_SECTION_NAMES) */
486 bfd_coff_set_long_section_names_disallowed (bfd
*abfd
, int enable
)
492 #endif /* defined (COFF_LONG_SECTION_NAMES) */
494 /* Return a word with STYP_* (scnhdr.s_flags) flags set to represent
495 the incoming SEC_* flags. The inverse of this function is
496 styp_to_sec_flags(). NOTE: If you add to/change this routine, you
497 should probably mirror the changes in styp_to_sec_flags(). */
501 /* Macros for setting debugging flags. */
504 #define STYP_XCOFF_DEBUG STYP_DEBUG
506 #define STYP_XCOFF_DEBUG STYP_INFO
509 #ifdef COFF_ALIGN_IN_S_FLAGS
510 #define STYP_DEBUG_INFO STYP_DSECT
512 #define STYP_DEBUG_INFO STYP_INFO
516 sec_to_styp_flags (const char *sec_name
, flagword sec_flags
)
520 if (!strcmp (sec_name
, _TEXT
))
522 styp_flags
= STYP_TEXT
;
524 else if (!strcmp (sec_name
, _DATA
))
526 styp_flags
= STYP_DATA
;
528 else if (!strcmp (sec_name
, _BSS
))
530 styp_flags
= STYP_BSS
;
533 else if (!strcmp (sec_name
, _COMMENT
))
535 styp_flags
= STYP_INFO
;
536 #endif /* _COMMENT */
539 else if (!strcmp (sec_name
, _LIB
))
541 styp_flags
= STYP_LIB
;
545 else if (!strcmp (sec_name
, _LIT
))
547 styp_flags
= STYP_LIT
;
550 else if (CONST_STRNEQ (sec_name
, DOT_DEBUG
)
551 || CONST_STRNEQ (sec_name
, DOT_ZDEBUG
))
553 /* Handle the XCOFF debug section and DWARF2 debug sections. */
555 styp_flags
= STYP_XCOFF_DEBUG
;
557 styp_flags
= STYP_DEBUG_INFO
;
559 else if (CONST_STRNEQ (sec_name
, ".stab"))
561 styp_flags
= STYP_DEBUG_INFO
;
563 #ifdef COFF_LONG_SECTION_NAMES
564 else if (CONST_STRNEQ (sec_name
, GNU_LINKONCE_WI
)
565 || CONST_STRNEQ (sec_name
, GNU_LINKONCE_WT
))
567 styp_flags
= STYP_DEBUG_INFO
;
571 else if (!strcmp (sec_name
, _PAD
))
573 styp_flags
= STYP_PAD
;
575 else if (!strcmp (sec_name
, _LOADER
))
577 styp_flags
= STYP_LOADER
;
579 else if (!strcmp (sec_name
, _EXCEPT
))
581 styp_flags
= STYP_EXCEPT
;
583 else if (!strcmp (sec_name
, _TYPCHK
))
585 styp_flags
= STYP_TYPCHK
;
587 else if (sec_flags
& SEC_DEBUGGING
)
591 for (i
= 0; i
< XCOFF_DWSECT_NBR_NAMES
; i
++)
592 if (!strcmp (sec_name
, xcoff_dwsect_names
[i
].name
))
594 styp_flags
= STYP_DWARF
| xcoff_dwsect_names
[i
].flag
;
599 /* Try and figure out what it should be */
600 else if (sec_flags
& SEC_CODE
)
602 styp_flags
= STYP_TEXT
;
604 else if (sec_flags
& SEC_DATA
)
606 styp_flags
= STYP_DATA
;
608 else if (sec_flags
& SEC_READONLY
)
610 #ifdef STYP_LIT /* 29k readonly text/data section */
611 styp_flags
= STYP_LIT
;
613 styp_flags
= STYP_TEXT
;
614 #endif /* STYP_LIT */
616 else if (sec_flags
& SEC_LOAD
)
618 styp_flags
= STYP_TEXT
;
620 else if (sec_flags
& SEC_ALLOC
)
622 styp_flags
= STYP_BSS
;
626 if (sec_flags
& SEC_TIC54X_CLINK
)
627 styp_flags
|= STYP_CLINK
;
631 if (sec_flags
& SEC_TIC54X_BLOCK
)
632 styp_flags
|= STYP_BLOCK
;
636 if ((sec_flags
& (SEC_NEVER_LOAD
| SEC_COFF_SHARED_LIBRARY
)) != 0)
637 styp_flags
|= STYP_NOLOAD
;
643 #else /* COFF_WITH_PE */
645 /* The PE version; see above for the general comments. The non-PE
646 case seems to be more guessing, and breaks PE format; specifically,
647 .rdata is readonly, but it sure ain't text. Really, all this
648 should be set up properly in gas (or whatever assembler is in use),
649 and honor whatever objcopy/strip, etc. sent us as input. */
652 sec_to_styp_flags (const char *sec_name
, flagword sec_flags
)
655 bfd_boolean is_dbg
= FALSE
;
657 if (CONST_STRNEQ (sec_name
, DOT_DEBUG
)
658 || CONST_STRNEQ (sec_name
, DOT_ZDEBUG
)
659 #ifdef COFF_LONG_SECTION_NAMES
660 || CONST_STRNEQ (sec_name
, GNU_LINKONCE_WI
)
661 || CONST_STRNEQ (sec_name
, GNU_LINKONCE_WT
)
663 || CONST_STRNEQ (sec_name
, ".stab"))
666 /* caution: there are at least three groups of symbols that have
667 very similar bits and meanings: IMAGE_SCN*, SEC_*, and STYP_*.
668 SEC_* are the BFD internal flags, used for generic BFD
669 information. STYP_* are the COFF section flags which appear in
670 COFF files. IMAGE_SCN_* are the PE section flags which appear in
671 PE files. The STYP_* flags and the IMAGE_SCN_* flags overlap,
672 but there are more IMAGE_SCN_* flags. */
674 /* FIXME: There is no gas syntax to specify the debug section flag. */
677 sec_flags
&= (SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
678 | SEC_LINK_DUPLICATES_SAME_CONTENTS
679 | SEC_LINK_DUPLICATES_SAME_SIZE
);
680 sec_flags
|= SEC_DEBUGGING
| SEC_READONLY
;
686 if ((sec_flags
& SEC_CODE
) != 0)
687 styp_flags
|= IMAGE_SCN_CNT_CODE
;
688 if ((sec_flags
& (SEC_DATA
| SEC_DEBUGGING
)) != 0)
689 styp_flags
|= IMAGE_SCN_CNT_INITIALIZED_DATA
;
690 if ((sec_flags
& SEC_ALLOC
) != 0 && (sec_flags
& SEC_LOAD
) == 0)
691 styp_flags
|= IMAGE_SCN_CNT_UNINITIALIZED_DATA
; /* ==STYP_BSS */
693 /* skip constRUCTOR */
695 if ((sec_flags
& SEC_IS_COMMON
) != 0)
696 styp_flags
|= IMAGE_SCN_LNK_COMDAT
;
697 if ((sec_flags
& SEC_DEBUGGING
) != 0)
698 styp_flags
|= IMAGE_SCN_MEM_DISCARDABLE
;
699 if ((sec_flags
& SEC_EXCLUDE
) != 0 && !is_dbg
)
700 styp_flags
|= IMAGE_SCN_LNK_REMOVE
;
701 if ((sec_flags
& SEC_NEVER_LOAD
) != 0 && !is_dbg
)
702 styp_flags
|= IMAGE_SCN_LNK_REMOVE
;
705 if (sec_flags
& SEC_LINK_ONCE
)
706 styp_flags
|= IMAGE_SCN_LNK_COMDAT
;
708 & (SEC_LINK_DUPLICATES_DISCARD
| SEC_LINK_DUPLICATES_SAME_CONTENTS
709 | SEC_LINK_DUPLICATES_SAME_SIZE
)) != 0)
710 styp_flags
|= IMAGE_SCN_LNK_COMDAT
;
712 /* skip LINKER_CREATED */
714 if ((sec_flags
& SEC_COFF_NOREAD
) == 0)
715 styp_flags
|= IMAGE_SCN_MEM_READ
; /* Invert NOREAD for read. */
716 if ((sec_flags
& SEC_READONLY
) == 0)
717 styp_flags
|= IMAGE_SCN_MEM_WRITE
; /* Invert READONLY for write. */
718 if (sec_flags
& SEC_CODE
)
719 styp_flags
|= IMAGE_SCN_MEM_EXECUTE
; /* CODE->EXECUTE. */
720 if (sec_flags
& SEC_COFF_SHARED
)
721 styp_flags
|= IMAGE_SCN_MEM_SHARED
; /* Shared remains meaningful. */
726 #endif /* COFF_WITH_PE */
728 /* Return a word with SEC_* flags set to represent the incoming STYP_*
729 flags (from scnhdr.s_flags). The inverse of this function is
730 sec_to_styp_flags(). NOTE: If you add to/change this routine, you
731 should probably mirror the changes in sec_to_styp_flags(). */
736 styp_to_sec_flags (bfd
*abfd ATTRIBUTE_UNUSED
,
739 asection
*section ATTRIBUTE_UNUSED
,
742 struct internal_scnhdr
*internal_s
= (struct internal_scnhdr
*) hdr
;
743 long styp_flags
= internal_s
->s_flags
;
744 flagword sec_flags
= 0;
747 if (styp_flags
& STYP_BLOCK
)
748 sec_flags
|= SEC_TIC54X_BLOCK
;
752 if (styp_flags
& STYP_CLINK
)
753 sec_flags
|= SEC_TIC54X_CLINK
;
757 if (styp_flags
& STYP_NOLOAD
)
758 sec_flags
|= SEC_NEVER_LOAD
;
759 #endif /* STYP_NOLOAD */
761 /* For 386 COFF, at least, an unloadable text or data section is
762 actually a shared library section. */
763 if (styp_flags
& STYP_TEXT
)
765 if (sec_flags
& SEC_NEVER_LOAD
)
766 sec_flags
|= SEC_CODE
| SEC_COFF_SHARED_LIBRARY
;
768 sec_flags
|= SEC_CODE
| SEC_LOAD
| SEC_ALLOC
;
770 else if (styp_flags
& STYP_DATA
)
772 if (sec_flags
& SEC_NEVER_LOAD
)
773 sec_flags
|= SEC_DATA
| SEC_COFF_SHARED_LIBRARY
;
775 sec_flags
|= SEC_DATA
| SEC_LOAD
| SEC_ALLOC
;
777 else if (styp_flags
& STYP_BSS
)
779 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
780 if (sec_flags
& SEC_NEVER_LOAD
)
781 sec_flags
|= SEC_ALLOC
| SEC_COFF_SHARED_LIBRARY
;
784 sec_flags
|= SEC_ALLOC
;
786 else if (styp_flags
& STYP_INFO
)
788 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
789 defined. coff_compute_section_file_positions uses
790 COFF_PAGE_SIZE to ensure that the low order bits of the
791 section VMA and the file offset match. If we don't know
792 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
793 and demand page loading of the file will fail. */
794 #if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS)
795 sec_flags
|= SEC_DEBUGGING
;
798 else if (styp_flags
& STYP_PAD
)
801 else if (styp_flags
& STYP_EXCEPT
)
802 sec_flags
|= SEC_LOAD
;
803 else if (styp_flags
& STYP_LOADER
)
804 sec_flags
|= SEC_LOAD
;
805 else if (styp_flags
& STYP_TYPCHK
)
806 sec_flags
|= SEC_LOAD
;
807 else if (styp_flags
& STYP_DWARF
)
808 sec_flags
|= SEC_DEBUGGING
;
810 else if (strcmp (name
, _TEXT
) == 0)
812 if (sec_flags
& SEC_NEVER_LOAD
)
813 sec_flags
|= SEC_CODE
| SEC_COFF_SHARED_LIBRARY
;
815 sec_flags
|= SEC_CODE
| SEC_LOAD
| SEC_ALLOC
;
817 else if (strcmp (name
, _DATA
) == 0)
819 if (sec_flags
& SEC_NEVER_LOAD
)
820 sec_flags
|= SEC_DATA
| SEC_COFF_SHARED_LIBRARY
;
822 sec_flags
|= SEC_DATA
| SEC_LOAD
| SEC_ALLOC
;
824 else if (strcmp (name
, _BSS
) == 0)
826 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
827 if (sec_flags
& SEC_NEVER_LOAD
)
828 sec_flags
|= SEC_ALLOC
| SEC_COFF_SHARED_LIBRARY
;
831 sec_flags
|= SEC_ALLOC
;
833 else if (CONST_STRNEQ (name
, DOT_DEBUG
)
834 || CONST_STRNEQ (name
, DOT_ZDEBUG
)
836 || strcmp (name
, _COMMENT
) == 0
838 #ifdef COFF_LONG_SECTION_NAMES
839 || CONST_STRNEQ (name
, GNU_LINKONCE_WI
)
840 || CONST_STRNEQ (name
, GNU_LINKONCE_WT
)
842 || CONST_STRNEQ (name
, ".stab"))
844 #ifdef COFF_PAGE_SIZE
845 sec_flags
|= SEC_DEBUGGING
;
849 else if (strcmp (name
, _LIB
) == 0)
853 else if (strcmp (name
, _LIT
) == 0)
854 sec_flags
= SEC_LOAD
| SEC_ALLOC
| SEC_READONLY
;
857 sec_flags
|= SEC_ALLOC
| SEC_LOAD
;
859 #ifdef STYP_LIT /* A29k readonly text/data section type. */
860 if ((styp_flags
& STYP_LIT
) == STYP_LIT
)
861 sec_flags
= (SEC_LOAD
| SEC_ALLOC
| SEC_READONLY
);
862 #endif /* STYP_LIT */
864 #ifdef STYP_OTHER_LOAD /* Other loaded sections. */
865 if (styp_flags
& STYP_OTHER_LOAD
)
866 sec_flags
= (SEC_LOAD
| SEC_ALLOC
);
867 #endif /* STYP_SDATA */
869 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
870 /* As a GNU extension, if the name begins with .gnu.linkonce, we
871 only link a single copy of the section. This is used to support
872 g++. g++ will emit each template expansion in its own section.
873 The symbols will be defined as weak, so that multiple definitions
874 are permitted. The GNU linker extension is to actually discard
875 all but one of the sections. */
876 if (CONST_STRNEQ (name
, ".gnu.linkonce"))
877 sec_flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
880 if (flags_ptr
== NULL
)
883 * flags_ptr
= sec_flags
;
887 #else /* COFF_WITH_PE */
890 handle_COMDAT (bfd
* abfd
,
896 struct internal_scnhdr
*internal_s
= (struct internal_scnhdr
*) hdr
;
897 bfd_byte
*esymstart
, *esym
, *esymend
;
899 char *target_name
= NULL
;
901 sec_flags
|= SEC_LINK_ONCE
;
903 /* Unfortunately, the PE format stores essential information in
904 the symbol table, of all places. We need to extract that
905 information now, so that objdump and the linker will know how
906 to handle the section without worrying about the symbols. We
907 can't call slurp_symtab, because the linker doesn't want the
910 /* COMDAT sections are special. The first symbol is the section
911 symbol, which tells what kind of COMDAT section it is. The
912 second symbol is the "comdat symbol" - the one with the
913 unique name. GNU uses the section symbol for the unique
914 name; MS uses ".text" for every comdat section. Sigh. - DJ */
916 /* This is not mirrored in sec_to_styp_flags(), but there
917 doesn't seem to be a need to, either, and it would at best be
920 if (! _bfd_coff_get_external_symbols (abfd
))
923 esymstart
= esym
= (bfd_byte
*) obj_coff_external_syms (abfd
);
924 esymend
= esym
+ obj_raw_syment_count (abfd
) * bfd_coff_symesz (abfd
);
926 while (esym
< esymend
)
928 struct internal_syment isym
;
929 char buf
[SYMNMLEN
+ 1];
932 bfd_coff_swap_sym_in (abfd
, esym
, & isym
);
934 BFD_ASSERT (sizeof (internal_s
->s_name
) <= SYMNMLEN
);
936 if (isym
.n_scnum
== section
->target_index
)
938 /* According to the MSVC documentation, the first
939 TWO entries with the section # are both of
940 interest to us. The first one is the "section
941 symbol" (section name). The second is the comdat
942 symbol name. Here, we've found the first
943 qualifying entry; we distinguish it from the
944 second with a state flag.
946 In the case of gas-generated (at least until that
947 is fixed) .o files, it isn't necessarily the
948 second one. It may be some other later symbol.
950 Since gas also doesn't follow MS conventions and
951 emits the section similar to .text$<name>, where
952 <something> is the name we're looking for, we
953 distinguish the two as follows:
955 If the section name is simply a section name (no
956 $) we presume it's MS-generated, and look at
957 precisely the second symbol for the comdat name.
958 If the section name has a $, we assume it's
959 gas-generated, and look for <something> (whatever
960 follows the $) as the comdat symbol. */
962 /* All 3 branches use this. */
963 symname
= _bfd_coff_internal_syment_name (abfd
, &isym
, buf
);
965 /* PR 17512 file: 078-11867-0.004 */
968 _bfd_error_handler (_("%B: unable to load COMDAT section name"),
977 /* The first time we've seen the symbol. */
978 union internal_auxent aux
;
980 /* If it isn't the stuff we're expecting, die;
981 The MS documentation is vague, but it
982 appears that the second entry serves BOTH
983 as the comdat symbol and the defining
984 symbol record (either C_STAT or C_EXT,
985 possibly with an aux entry with debug
986 information if it's a function.) It
987 appears the only way to find the second one
988 is to count. (On Intel, they appear to be
989 adjacent, but on Alpha, they have been
992 Here, we think we've found the first one,
993 but there's some checking we can do to be
996 if (! ((isym
.n_sclass
== C_STAT
997 || isym
.n_sclass
== C_EXT
)
998 && BTYPE (isym
.n_type
) == T_NULL
999 && isym
.n_value
== 0))
1002 /* FIXME LATER: MSVC generates section names
1003 like .text for comdats. Gas generates
1004 names like .text$foo__Fv (in the case of a
1005 function). See comment above for more. */
1007 if (isym
.n_sclass
== C_STAT
&& strcmp (name
, symname
) != 0)
1008 /* xgettext:c-format */
1009 _bfd_error_handler (_("%B: warning: COMDAT symbol '%s'"
1010 " does not match section name '%s'"),
1011 abfd
, symname
, name
);
1015 /* PR 17512: file: e2cfe54f. */
1016 if (esym
+ bfd_coff_symesz (abfd
) >= esymend
)
1018 /* xgettext:c-format */
1019 _bfd_error_handler (_("%B: warning: No symbol for"
1020 " section '%s' found"),
1024 /* This is the section symbol. */
1025 bfd_coff_swap_aux_in (abfd
, (esym
+ bfd_coff_symesz (abfd
)),
1026 isym
.n_type
, isym
.n_sclass
,
1027 0, isym
.n_numaux
, & aux
);
1029 target_name
= strchr (name
, '$');
1030 if (target_name
!= NULL
)
1038 /* FIXME: Microsoft uses NODUPLICATES and
1039 ASSOCIATIVE, but gnu uses ANY and
1040 SAME_SIZE. Unfortunately, gnu doesn't do
1041 the comdat symbols right. So, until we can
1042 fix it to do the right thing, we are
1043 temporarily disabling comdats for the MS
1044 types (they're used in DLLs and C++, but we
1045 don't support *their* C++ libraries anyway
1048 /* Cygwin does not follow the MS style, and
1049 uses ANY and SAME_SIZE where NODUPLICATES
1050 and ASSOCIATIVE should be used. For
1051 Interix, we just do the right thing up
1054 switch (aux
.x_scn
.x_comdat
)
1056 case IMAGE_COMDAT_SELECT_NODUPLICATES
:
1057 #ifdef STRICT_PE_FORMAT
1058 sec_flags
|= SEC_LINK_DUPLICATES_ONE_ONLY
;
1060 sec_flags
&= ~SEC_LINK_ONCE
;
1064 case IMAGE_COMDAT_SELECT_ANY
:
1065 sec_flags
|= SEC_LINK_DUPLICATES_DISCARD
;
1068 case IMAGE_COMDAT_SELECT_SAME_SIZE
:
1069 sec_flags
|= SEC_LINK_DUPLICATES_SAME_SIZE
;
1072 case IMAGE_COMDAT_SELECT_EXACT_MATCH
:
1073 /* Not yet fully implemented ??? */
1074 sec_flags
|= SEC_LINK_DUPLICATES_SAME_CONTENTS
;
1077 /* debug$S gets this case; other
1080 /* There may be no symbol... we'll search
1081 the whole table... Is this the right
1082 place to play this game? Or should we do
1083 it when reading it in. */
1084 case IMAGE_COMDAT_SELECT_ASSOCIATIVE
:
1085 #ifdef STRICT_PE_FORMAT
1086 /* FIXME: This is not currently implemented. */
1087 sec_flags
|= SEC_LINK_DUPLICATES_DISCARD
;
1089 sec_flags
&= ~SEC_LINK_ONCE
;
1093 default: /* 0 means "no symbol" */
1094 /* debug$F gets this case; other
1096 sec_flags
|= SEC_LINK_DUPLICATES_DISCARD
;
1103 /* Gas mode: the first matching on partial name. */
1105 #ifndef TARGET_UNDERSCORE
1106 #define TARGET_UNDERSCORE 0
1108 /* Is this the name we're looking for ? */
1109 if (strcmp (target_name
,
1110 symname
+ (TARGET_UNDERSCORE
? 1 : 0)) != 0)
1112 /* Not the name we're looking for */
1113 esym
+= (isym
.n_numaux
+ 1) * bfd_coff_symesz (abfd
);
1118 /* MSVC mode: the lexically second symbol (or
1119 drop through from the above). */
1124 /* This must the second symbol with the
1125 section #. It is the actual symbol name.
1126 Intel puts the two adjacent, but Alpha (at
1127 least) spreads them out. */
1129 amt
= sizeof (struct coff_comdat_info
);
1130 coff_section_data (abfd
, section
)->comdat
1131 = (struct coff_comdat_info
*) bfd_alloc (abfd
, amt
);
1132 if (coff_section_data (abfd
, section
)->comdat
== NULL
)
1135 coff_section_data (abfd
, section
)->comdat
->symbol
=
1136 (esym
- esymstart
) / bfd_coff_symesz (abfd
);
1138 amt
= strlen (symname
) + 1;
1139 newname
= (char *) bfd_alloc (abfd
, amt
);
1140 if (newname
== NULL
)
1143 strcpy (newname
, symname
);
1144 coff_section_data (abfd
, section
)->comdat
->name
1152 esym
+= (isym
.n_numaux
+ 1) * bfd_coff_symesz (abfd
);
1160 /* The PE version; see above for the general comments.
1162 Since to set the SEC_LINK_ONCE and associated flags, we have to
1163 look at the symbol table anyway, we return the symbol table index
1164 of the symbol being used as the COMDAT symbol. This is admittedly
1165 ugly, but there's really nowhere else that we have access to the
1166 required information. FIXME: Is the COMDAT symbol index used for
1167 any purpose other than objdump? */
1170 styp_to_sec_flags (bfd
*abfd
,
1174 flagword
*flags_ptr
)
1176 struct internal_scnhdr
*internal_s
= (struct internal_scnhdr
*) hdr
;
1177 unsigned long styp_flags
= internal_s
->s_flags
;
1179 bfd_boolean result
= TRUE
;
1180 bfd_boolean is_dbg
= FALSE
;
1182 if (CONST_STRNEQ (name
, DOT_DEBUG
)
1183 || CONST_STRNEQ (name
, DOT_ZDEBUG
)
1184 #ifdef COFF_LONG_SECTION_NAMES
1185 || CONST_STRNEQ (name
, GNU_LINKONCE_WI
)
1186 || CONST_STRNEQ (name
, GNU_LINKONCE_WT
)
1188 || CONST_STRNEQ (name
, ".stab"))
1190 /* Assume read only unless IMAGE_SCN_MEM_WRITE is specified. */
1191 sec_flags
= SEC_READONLY
;
1193 /* If section disallows read, then set the NOREAD flag. */
1194 if ((styp_flags
& IMAGE_SCN_MEM_READ
) == 0)
1195 sec_flags
|= SEC_COFF_NOREAD
;
1197 /* Process each flag bit in styp_flags in turn. */
1200 unsigned long flag
= styp_flags
& - styp_flags
;
1201 char * unhandled
= NULL
;
1203 styp_flags
&= ~ flag
;
1205 /* We infer from the distinct read/write/execute bits the settings
1206 of some of the bfd flags; the actual values, should we need them,
1207 are also in pei_section_data (abfd, section)->pe_flags. */
1212 unhandled
= "STYP_DSECT";
1215 unhandled
= "STYP_GROUP";
1218 unhandled
= "STYP_COPY";
1221 unhandled
= "STYP_OVER";
1223 #ifdef SEC_NEVER_LOAD
1225 sec_flags
|= SEC_NEVER_LOAD
;
1228 case IMAGE_SCN_MEM_READ
:
1229 sec_flags
&= ~SEC_COFF_NOREAD
;
1231 case IMAGE_SCN_TYPE_NO_PAD
:
1234 case IMAGE_SCN_LNK_OTHER
:
1235 unhandled
= "IMAGE_SCN_LNK_OTHER";
1237 case IMAGE_SCN_MEM_NOT_CACHED
:
1238 unhandled
= "IMAGE_SCN_MEM_NOT_CACHED";
1240 case IMAGE_SCN_MEM_NOT_PAGED
:
1241 /* Generate a warning message rather using the 'unhandled'
1242 variable as this will allow some .sys files generate by
1243 other toolchains to be processed. See bugzilla issue 196. */
1244 /* xgettext:c-format */
1245 _bfd_error_handler (_("%B: Warning: Ignoring section flag"
1246 " IMAGE_SCN_MEM_NOT_PAGED in section %s"),
1249 case IMAGE_SCN_MEM_EXECUTE
:
1250 sec_flags
|= SEC_CODE
;
1252 case IMAGE_SCN_MEM_WRITE
:
1253 sec_flags
&= ~ SEC_READONLY
;
1255 case IMAGE_SCN_MEM_DISCARDABLE
:
1256 /* The MS PE spec says that debug sections are DISCARDABLE,
1257 but the presence of a DISCARDABLE flag does not necessarily
1258 mean that a given section contains debug information. Thus
1259 we only set the SEC_DEBUGGING flag on sections that we
1260 recognise as containing debug information. */
1263 || strcmp (name
, _COMMENT
) == 0
1267 sec_flags
|= SEC_DEBUGGING
| SEC_READONLY
;
1270 case IMAGE_SCN_MEM_SHARED
:
1271 sec_flags
|= SEC_COFF_SHARED
;
1273 case IMAGE_SCN_LNK_REMOVE
:
1275 sec_flags
|= SEC_EXCLUDE
;
1277 case IMAGE_SCN_CNT_CODE
:
1278 sec_flags
|= SEC_CODE
| SEC_ALLOC
| SEC_LOAD
;
1280 case IMAGE_SCN_CNT_INITIALIZED_DATA
:
1282 sec_flags
|= SEC_DEBUGGING
;
1284 sec_flags
|= SEC_DATA
| SEC_ALLOC
| SEC_LOAD
;
1286 case IMAGE_SCN_CNT_UNINITIALIZED_DATA
:
1287 sec_flags
|= SEC_ALLOC
;
1289 case IMAGE_SCN_LNK_INFO
:
1290 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
1291 defined. coff_compute_section_file_positions uses
1292 COFF_PAGE_SIZE to ensure that the low order bits of the
1293 section VMA and the file offset match. If we don't know
1294 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
1295 and demand page loading of the file will fail. */
1296 #ifdef COFF_PAGE_SIZE
1297 sec_flags
|= SEC_DEBUGGING
;
1300 case IMAGE_SCN_LNK_COMDAT
:
1301 /* COMDAT gets very special treatment. */
1302 sec_flags
= handle_COMDAT (abfd
, sec_flags
, hdr
, name
, section
);
1305 /* Silently ignore for now. */
1309 /* If the section flag was not handled, report it here. */
1310 if (unhandled
!= NULL
)
1313 /* xgettext:c-format */
1314 (_("%B (%s): Section flag %s (0x%x) ignored"),
1315 abfd
, name
, unhandled
, flag
);
1320 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
1321 /* As a GNU extension, if the name begins with .gnu.linkonce, we
1322 only link a single copy of the section. This is used to support
1323 g++. g++ will emit each template expansion in its own section.
1324 The symbols will be defined as weak, so that multiple definitions
1325 are permitted. The GNU linker extension is to actually discard
1326 all but one of the sections. */
1327 if (CONST_STRNEQ (name
, ".gnu.linkonce"))
1328 sec_flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
1332 * flags_ptr
= sec_flags
;
1337 #endif /* COFF_WITH_PE */
1339 #define get_index(symbol) ((symbol)->udata.i)
1343 bfd_coff_backend_data
1347 .{* COFF symbol classifications. *}
1349 .enum coff_symbol_classification
1351 . {* Global symbol. *}
1352 . COFF_SYMBOL_GLOBAL,
1353 . {* Common symbol. *}
1354 . COFF_SYMBOL_COMMON,
1355 . {* Undefined symbol. *}
1356 . COFF_SYMBOL_UNDEFINED,
1357 . {* Local symbol. *}
1358 . COFF_SYMBOL_LOCAL,
1359 . {* PE section symbol. *}
1360 . COFF_SYMBOL_PE_SECTION
1363 .typedef asection * (*coff_gc_mark_hook_fn)
1364 . (asection *, struct bfd_link_info *, struct internal_reloc *,
1365 . struct coff_link_hash_entry *, struct internal_syment *);
1367 Special entry points for gdb to swap in coff symbol table parts:
1370 . void (*_bfd_coff_swap_aux_in)
1371 . (bfd *, void *, int, int, int, int, void *);
1373 . void (*_bfd_coff_swap_sym_in)
1374 . (bfd *, void *, void *);
1376 . void (*_bfd_coff_swap_lineno_in)
1377 . (bfd *, void *, void *);
1379 . unsigned int (*_bfd_coff_swap_aux_out)
1380 . (bfd *, void *, int, int, int, int, void *);
1382 . unsigned int (*_bfd_coff_swap_sym_out)
1383 . (bfd *, void *, void *);
1385 . unsigned int (*_bfd_coff_swap_lineno_out)
1386 . (bfd *, void *, void *);
1388 . unsigned int (*_bfd_coff_swap_reloc_out)
1389 . (bfd *, void *, void *);
1391 . unsigned int (*_bfd_coff_swap_filehdr_out)
1392 . (bfd *, void *, void *);
1394 . unsigned int (*_bfd_coff_swap_aouthdr_out)
1395 . (bfd *, void *, void *);
1397 . unsigned int (*_bfd_coff_swap_scnhdr_out)
1398 . (bfd *, void *, void *);
1400 . unsigned int _bfd_filhsz;
1401 . unsigned int _bfd_aoutsz;
1402 . unsigned int _bfd_scnhsz;
1403 . unsigned int _bfd_symesz;
1404 . unsigned int _bfd_auxesz;
1405 . unsigned int _bfd_relsz;
1406 . unsigned int _bfd_linesz;
1407 . unsigned int _bfd_filnmlen;
1408 . bfd_boolean _bfd_coff_long_filenames;
1410 . bfd_boolean _bfd_coff_long_section_names;
1411 . bfd_boolean (*_bfd_coff_set_long_section_names)
1414 . unsigned int _bfd_coff_default_section_alignment_power;
1415 . bfd_boolean _bfd_coff_force_symnames_in_strings;
1416 . unsigned int _bfd_coff_debug_string_prefix_length;
1417 . unsigned int _bfd_coff_max_nscns;
1419 . void (*_bfd_coff_swap_filehdr_in)
1420 . (bfd *, void *, void *);
1422 . void (*_bfd_coff_swap_aouthdr_in)
1423 . (bfd *, void *, void *);
1425 . void (*_bfd_coff_swap_scnhdr_in)
1426 . (bfd *, void *, void *);
1428 . void (*_bfd_coff_swap_reloc_in)
1429 . (bfd *abfd, void *, void *);
1431 . bfd_boolean (*_bfd_coff_bad_format_hook)
1434 . bfd_boolean (*_bfd_coff_set_arch_mach_hook)
1437 . void * (*_bfd_coff_mkobject_hook)
1438 . (bfd *, void *, void *);
1440 . bfd_boolean (*_bfd_styp_to_sec_flags_hook)
1441 . (bfd *, void *, const char *, asection *, flagword *);
1443 . void (*_bfd_set_alignment_hook)
1444 . (bfd *, asection *, void *);
1446 . bfd_boolean (*_bfd_coff_slurp_symbol_table)
1449 . bfd_boolean (*_bfd_coff_symname_in_debug)
1450 . (bfd *, struct internal_syment *);
1452 . bfd_boolean (*_bfd_coff_pointerize_aux_hook)
1453 . (bfd *, combined_entry_type *, combined_entry_type *,
1454 . unsigned int, combined_entry_type *);
1456 . bfd_boolean (*_bfd_coff_print_aux)
1457 . (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1458 . combined_entry_type *, unsigned int);
1460 . void (*_bfd_coff_reloc16_extra_cases)
1461 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
1462 . bfd_byte *, unsigned int *, unsigned int *);
1464 . int (*_bfd_coff_reloc16_estimate)
1465 . (bfd *, asection *, arelent *, unsigned int,
1466 . struct bfd_link_info *);
1468 . enum coff_symbol_classification (*_bfd_coff_classify_symbol)
1469 . (bfd *, struct internal_syment *);
1471 . bfd_boolean (*_bfd_coff_compute_section_file_positions)
1474 . bfd_boolean (*_bfd_coff_start_final_link)
1475 . (bfd *, struct bfd_link_info *);
1477 . bfd_boolean (*_bfd_coff_relocate_section)
1478 . (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
1479 . struct internal_reloc *, struct internal_syment *, asection **);
1481 . reloc_howto_type *(*_bfd_coff_rtype_to_howto)
1482 . (bfd *, asection *, struct internal_reloc *,
1483 . struct coff_link_hash_entry *, struct internal_syment *,
1486 . bfd_boolean (*_bfd_coff_adjust_symndx)
1487 . (bfd *, struct bfd_link_info *, bfd *, asection *,
1488 . struct internal_reloc *, bfd_boolean *);
1490 . bfd_boolean (*_bfd_coff_link_add_one_symbol)
1491 . (struct bfd_link_info *, bfd *, const char *, flagword,
1492 . asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
1493 . struct bfd_link_hash_entry **);
1495 . bfd_boolean (*_bfd_coff_link_output_has_begun)
1496 . (bfd *, struct coff_final_link_info *);
1498 . bfd_boolean (*_bfd_coff_final_link_postscript)
1499 . (bfd *, struct coff_final_link_info *);
1501 . bfd_boolean (*_bfd_coff_print_pdata)
1504 .} bfd_coff_backend_data;
1506 .#define coff_backend_info(abfd) \
1507 . ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1509 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1510 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1512 .#define bfd_coff_swap_sym_in(a,e,i) \
1513 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1515 .#define bfd_coff_swap_lineno_in(a,e,i) \
1516 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1518 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1519 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1521 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1522 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1524 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1525 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1527 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1528 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1530 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1531 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1533 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1534 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1536 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1537 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1539 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1540 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1541 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1542 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1543 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1544 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
1545 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1546 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1547 .#define bfd_coff_long_filenames(abfd) \
1548 . (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1549 .#define bfd_coff_long_section_names(abfd) \
1550 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1551 .#define bfd_coff_set_long_section_names(abfd, enable) \
1552 . ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable))
1553 .#define bfd_coff_default_section_alignment_power(abfd) \
1554 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1555 .#define bfd_coff_max_nscns(abfd) \
1556 . (coff_backend_info (abfd)->_bfd_coff_max_nscns)
1558 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1559 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1561 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1562 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1564 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1565 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1567 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1568 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1570 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1571 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1573 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1574 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1575 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1576 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
1577 . (abfd, filehdr, aouthdr))
1579 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
1580 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1581 . (abfd, scnhdr, name, section, flags_ptr))
1583 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1584 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1586 .#define bfd_coff_slurp_symbol_table(abfd)\
1587 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1589 .#define bfd_coff_symname_in_debug(abfd, sym)\
1590 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1592 .#define bfd_coff_force_symnames_in_strings(abfd)\
1593 . (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
1595 .#define bfd_coff_debug_string_prefix_length(abfd)\
1596 . (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
1598 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1599 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1600 . (abfd, file, base, symbol, aux, indaux))
1602 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
1603 . reloc, data, src_ptr, dst_ptr)\
1604 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1605 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1607 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1608 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1609 . (abfd, section, reloc, shrink, link_info))
1611 .#define bfd_coff_classify_symbol(abfd, sym)\
1612 . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1615 .#define bfd_coff_compute_section_file_positions(abfd)\
1616 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1619 .#define bfd_coff_start_final_link(obfd, info)\
1620 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1622 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1623 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1624 . (obfd, info, ibfd, o, con, rel, isyms, secs))
1625 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1626 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1627 . (abfd, sec, rel, h, sym, addendp))
1628 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1629 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1630 . (obfd, info, ibfd, sec, rel, adjustedp))
1631 .#define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
1632 . value, string, cp, coll, hashp)\
1633 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1634 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1636 .#define bfd_coff_link_output_has_begun(a,p) \
1637 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p))
1638 .#define bfd_coff_final_link_postscript(a,p) \
1639 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
1641 .#define bfd_coff_have_print_pdata(a) \
1642 . (coff_backend_info (a)->_bfd_coff_print_pdata)
1643 .#define bfd_coff_print_pdata(a,p) \
1644 . ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p))
1646 .{* Macro: Returns true if the bfd is a PE executable as opposed to a
1647 . PE object file. *}
1648 .#define bfd_pei_p(abfd) \
1649 . (CONST_STRNEQ ((abfd)->xvec->name, "pei-"))
1652 /* See whether the magic number matches. */
1655 coff_bad_format_hook (bfd
* abfd ATTRIBUTE_UNUSED
, void * filehdr
)
1657 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1659 if (BADMAG (*internal_f
))
1662 /* If the optional header is NULL or not the correct size then
1663 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1664 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1665 optional header is of a different size.
1667 But the mips keeps extra stuff in it's opthdr, so dont check
1670 #if defined(M88) || defined(I960)
1671 if (internal_f
->f_opthdr
!= 0 && bfd_coff_aoutsz (abfd
) != internal_f
->f_opthdr
)
1680 ticoff0_bad_format_hook (bfd
*abfd ATTRIBUTE_UNUSED
, void * filehdr
)
1682 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1684 if (COFF0_BADMAG (*internal_f
))
1693 ticoff1_bad_format_hook (bfd
*abfd ATTRIBUTE_UNUSED
, void * filehdr
)
1695 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1697 if (COFF1_BADMAG (*internal_f
))
1704 /* Check whether this section uses an alignment other than the
1708 coff_set_custom_section_alignment (bfd
*abfd ATTRIBUTE_UNUSED
,
1710 const struct coff_section_alignment_entry
*alignment_table
,
1711 const unsigned int table_size
)
1713 const unsigned int default_alignment
= COFF_DEFAULT_SECTION_ALIGNMENT_POWER
;
1716 for (i
= 0; i
< table_size
; ++i
)
1718 const char *secname
= bfd_get_section_name (abfd
, section
);
1720 if (alignment_table
[i
].comparison_length
== (unsigned int) -1
1721 ? strcmp (alignment_table
[i
].name
, secname
) == 0
1722 : strncmp (alignment_table
[i
].name
, secname
,
1723 alignment_table
[i
].comparison_length
) == 0)
1726 if (i
>= table_size
)
1729 if (alignment_table
[i
].default_alignment_min
!= COFF_ALIGNMENT_FIELD_EMPTY
1730 && default_alignment
< alignment_table
[i
].default_alignment_min
)
1733 if (alignment_table
[i
].default_alignment_max
!= COFF_ALIGNMENT_FIELD_EMPTY
1734 #if COFF_DEFAULT_SECTION_ALIGNMENT_POWER != 0
1735 && default_alignment
> alignment_table
[i
].default_alignment_max
1740 section
->alignment_power
= alignment_table
[i
].alignment_power
;
1743 /* Custom section alignment records. */
1745 static const struct coff_section_alignment_entry
1746 coff_section_alignment_table
[] =
1748 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1749 COFF_SECTION_ALIGNMENT_ENTRIES
,
1751 /* There must not be any gaps between .stabstr sections. */
1752 { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1753 1, COFF_ALIGNMENT_FIELD_EMPTY
, 0 },
1754 /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */
1755 { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1756 3, COFF_ALIGNMENT_FIELD_EMPTY
, 2 },
1757 /* Similarly for the .ctors and .dtors sections. */
1758 { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1759 3, COFF_ALIGNMENT_FIELD_EMPTY
, 2 },
1760 { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1761 3, COFF_ALIGNMENT_FIELD_EMPTY
, 2 }
1764 static const unsigned int coff_section_alignment_table_size
=
1765 sizeof coff_section_alignment_table
/ sizeof coff_section_alignment_table
[0];
1767 /* Initialize a section structure with information peculiar to this
1768 particular implementation of COFF. */
1771 coff_new_section_hook (bfd
* abfd
, asection
* section
)
1773 combined_entry_type
*native
;
1775 unsigned char sclass
= C_STAT
;
1777 section
->alignment_power
= COFF_DEFAULT_SECTION_ALIGNMENT_POWER
;
1780 if (bfd_xcoff_text_align_power (abfd
) != 0
1781 && strcmp (bfd_get_section_name (abfd
, section
), ".text") == 0)
1782 section
->alignment_power
= bfd_xcoff_text_align_power (abfd
);
1783 else if (bfd_xcoff_data_align_power (abfd
) != 0
1784 && strcmp (bfd_get_section_name (abfd
, section
), ".data") == 0)
1785 section
->alignment_power
= bfd_xcoff_data_align_power (abfd
);
1790 for (i
= 0; i
< XCOFF_DWSECT_NBR_NAMES
; i
++)
1791 if (strcmp (bfd_get_section_name (abfd
, section
),
1792 xcoff_dwsect_names
[i
].name
) == 0)
1794 section
->alignment_power
= 0;
1801 /* Set up the section symbol. */
1802 if (!_bfd_generic_new_section_hook (abfd
, section
))
1805 /* Allocate aux records for section symbols, to store size and
1808 @@ The 10 is a guess at a plausible maximum number of aux entries
1809 (but shouldn't be a constant). */
1810 amt
= sizeof (combined_entry_type
) * 10;
1811 native
= (combined_entry_type
*) bfd_zalloc (abfd
, amt
);
1815 /* We don't need to set up n_name, n_value, or n_scnum in the native
1816 symbol information, since they'll be overridden by the BFD symbol
1817 anyhow. However, we do need to set the type and storage class,
1818 in case this symbol winds up getting written out. The value 0
1819 for n_numaux is already correct. */
1821 native
->is_sym
= TRUE
;
1822 native
->u
.syment
.n_type
= T_NULL
;
1823 native
->u
.syment
.n_sclass
= sclass
;
1825 coffsymbol (section
->symbol
)->native
= native
;
1827 coff_set_custom_section_alignment (abfd
, section
,
1828 coff_section_alignment_table
,
1829 coff_section_alignment_table_size
);
1834 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1836 /* Set the alignment of a BFD section. */
1839 coff_set_alignment_hook (bfd
* abfd ATTRIBUTE_UNUSED
,
1843 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1847 /* Extract ALIGN from 2**ALIGN stored in section header. */
1848 for (i
= 0; i
< 32; i
++)
1849 if ((1 << i
) >= hdr
->s_align
)
1853 /* TI tools puts the alignment power in bits 8-11. */
1854 i
= (hdr
->s_flags
>> 8) & 0xF ;
1856 #ifdef COFF_DECODE_ALIGNMENT
1857 i
= COFF_DECODE_ALIGNMENT(hdr
->s_flags
);
1859 section
->alignment_power
= i
;
1861 #ifdef coff_set_section_load_page
1862 coff_set_section_load_page (section
, hdr
->s_page
);
1866 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1870 coff_set_alignment_hook (bfd
* abfd ATTRIBUTE_UNUSED
,
1874 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1876 unsigned int alignment_power_const
1877 = hdr
->s_flags
& IMAGE_SCN_ALIGN_POWER_BIT_MASK
;
1879 switch (alignment_power_const
)
1881 case IMAGE_SCN_ALIGN_8192BYTES
:
1882 case IMAGE_SCN_ALIGN_4096BYTES
:
1883 case IMAGE_SCN_ALIGN_2048BYTES
:
1884 case IMAGE_SCN_ALIGN_1024BYTES
:
1885 case IMAGE_SCN_ALIGN_512BYTES
:
1886 case IMAGE_SCN_ALIGN_256BYTES
:
1887 case IMAGE_SCN_ALIGN_128BYTES
:
1888 case IMAGE_SCN_ALIGN_64BYTES
:
1889 case IMAGE_SCN_ALIGN_32BYTES
:
1890 case IMAGE_SCN_ALIGN_16BYTES
:
1891 case IMAGE_SCN_ALIGN_8BYTES
:
1892 case IMAGE_SCN_ALIGN_4BYTES
:
1893 case IMAGE_SCN_ALIGN_2BYTES
:
1894 case IMAGE_SCN_ALIGN_1BYTES
:
1895 section
->alignment_power
1896 = IMAGE_SCN_ALIGN_POWER_NUM (alignment_power_const
);
1902 /* In a PE image file, the s_paddr field holds the virtual size of a
1903 section, while the s_size field holds the raw size. We also keep
1904 the original section flag value, since not every bit can be
1905 mapped onto a generic BFD section bit. */
1906 if (coff_section_data (abfd
, section
) == NULL
)
1908 amt
= sizeof (struct coff_section_tdata
);
1909 section
->used_by_bfd
= bfd_zalloc (abfd
, amt
);
1910 if (section
->used_by_bfd
== NULL
)
1911 /* FIXME: Return error. */
1915 if (pei_section_data (abfd
, section
) == NULL
)
1917 amt
= sizeof (struct pei_section_tdata
);
1918 coff_section_data (abfd
, section
)->tdata
= bfd_zalloc (abfd
, amt
);
1919 if (coff_section_data (abfd
, section
)->tdata
== NULL
)
1920 /* FIXME: Return error. */
1923 pei_section_data (abfd
, section
)->virt_size
= hdr
->s_paddr
;
1924 pei_section_data (abfd
, section
)->pe_flags
= hdr
->s_flags
;
1926 section
->lma
= hdr
->s_vaddr
;
1928 /* Check for extended relocs. */
1929 if (hdr
->s_flags
& IMAGE_SCN_LNK_NRELOC_OVFL
)
1931 struct external_reloc dst
;
1932 struct internal_reloc n
;
1933 file_ptr oldpos
= bfd_tell (abfd
);
1934 bfd_size_type relsz
= bfd_coff_relsz (abfd
);
1936 if (bfd_seek (abfd
, (file_ptr
) hdr
->s_relptr
, 0) != 0)
1938 if (bfd_bread (& dst
, relsz
, abfd
) != relsz
)
1941 coff_swap_reloc_in (abfd
, &dst
, &n
);
1942 if (bfd_seek (abfd
, oldpos
, 0) != 0)
1944 section
->reloc_count
= hdr
->s_nreloc
= n
.r_vaddr
- 1;
1945 section
->rel_filepos
+= relsz
;
1947 else if (hdr
->s_nreloc
== 0xffff)
1949 (_("%B: warning: claims to have 0xffff relocs, without overflow"),
1953 #undef ELIFALIGN_SET
1955 #else /* ! COFF_WITH_PE */
1958 /* We grossly abuse this function to handle XCOFF overflow headers.
1959 When we see one, we correct the reloc and line number counts in the
1960 real header, and remove the section we just created. */
1963 coff_set_alignment_hook (bfd
*abfd
, asection
*section
, void * scnhdr
)
1965 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1968 if ((hdr
->s_flags
& STYP_OVRFLO
) == 0)
1971 real_sec
= coff_section_from_bfd_index (abfd
, (int) hdr
->s_nreloc
);
1972 if (real_sec
== NULL
)
1975 real_sec
->reloc_count
= hdr
->s_paddr
;
1976 real_sec
->lineno_count
= hdr
->s_vaddr
;
1978 if (!bfd_section_removed_from_list (abfd
, section
))
1980 bfd_section_list_remove (abfd
, section
);
1981 --abfd
->section_count
;
1985 #else /* ! RS6000COFF_C */
1987 #define coff_set_alignment_hook \
1988 ((void (*) (bfd *, asection *, void *)) bfd_void)
1990 #endif /* ! RS6000COFF_C */
1991 #endif /* ! COFF_WITH_PE */
1992 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1994 #ifndef coff_mkobject
1997 coff_mkobject (bfd
* abfd
)
1999 coff_data_type
*coff
;
2000 bfd_size_type amt
= sizeof (coff_data_type
);
2002 abfd
->tdata
.coff_obj_data
= bfd_zalloc (abfd
, amt
);
2003 if (abfd
->tdata
.coff_obj_data
== NULL
)
2005 coff
= coff_data (abfd
);
2006 coff
->symbols
= NULL
;
2007 coff
->conversion_table
= NULL
;
2008 coff
->raw_syments
= NULL
;
2009 coff
->relocbase
= 0;
2010 coff
->local_toc_sym_map
= 0;
2012 /* make_abs_section(abfd);*/
2018 /* Create the COFF backend specific information. */
2020 #ifndef coff_mkobject_hook
2022 coff_mkobject_hook (bfd
* abfd
,
2024 void * aouthdr ATTRIBUTE_UNUSED
)
2026 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
2027 coff_data_type
*coff
;
2029 if (! coff_mkobject (abfd
))
2032 coff
= coff_data (abfd
);
2034 coff
->sym_filepos
= internal_f
->f_symptr
;
2036 /* These members communicate important constants about the symbol
2037 table to GDB's symbol-reading code. These `constants'
2038 unfortunately vary among coff implementations... */
2039 coff
->local_n_btmask
= N_BTMASK
;
2040 coff
->local_n_btshft
= N_BTSHFT
;
2041 coff
->local_n_tmask
= N_TMASK
;
2042 coff
->local_n_tshift
= N_TSHIFT
;
2043 coff
->local_symesz
= bfd_coff_symesz (abfd
);
2044 coff
->local_auxesz
= bfd_coff_auxesz (abfd
);
2045 coff
->local_linesz
= bfd_coff_linesz (abfd
);
2047 coff
->timestamp
= internal_f
->f_timdat
;
2049 obj_raw_syment_count (abfd
) =
2050 obj_conv_table_size (abfd
) =
2051 internal_f
->f_nsyms
;
2054 if ((internal_f
->f_flags
& F_SHROBJ
) != 0)
2055 abfd
->flags
|= DYNAMIC
;
2056 if (aouthdr
!= NULL
&& internal_f
->f_opthdr
>= bfd_coff_aoutsz (abfd
))
2058 struct internal_aouthdr
*internal_a
=
2059 (struct internal_aouthdr
*) aouthdr
;
2060 struct xcoff_tdata
*xcoff
;
2062 xcoff
= xcoff_data (abfd
);
2063 # ifdef U803XTOCMAGIC
2064 xcoff
->xcoff64
= internal_f
->f_magic
== U803XTOCMAGIC
;
2068 xcoff
->full_aouthdr
= TRUE
;
2069 xcoff
->toc
= internal_a
->o_toc
;
2070 xcoff
->sntoc
= internal_a
->o_sntoc
;
2071 xcoff
->snentry
= internal_a
->o_snentry
;
2072 bfd_xcoff_text_align_power (abfd
) = internal_a
->o_algntext
;
2073 bfd_xcoff_data_align_power (abfd
) = internal_a
->o_algndata
;
2074 xcoff
->modtype
= internal_a
->o_modtype
;
2075 xcoff
->cputype
= internal_a
->o_cputype
;
2076 xcoff
->maxdata
= internal_a
->o_maxdata
;
2077 xcoff
->maxstack
= internal_a
->o_maxstack
;
2082 /* Set the flags field from the COFF header read in. */
2083 if (! _bfd_coff_arm_set_private_flags (abfd
, internal_f
->f_flags
))
2088 /* FIXME: I'm not sure this is ever executed, since peicode.h
2089 defines coff_mkobject_hook. */
2090 if ((internal_f
->f_flags
& IMAGE_FILE_DEBUG_STRIPPED
) == 0)
2091 abfd
->flags
|= HAS_DEBUG
;
2094 if ((internal_f
->f_flags
& F_GO32STUB
) != 0)
2096 coff
->go32stub
= (char *) bfd_alloc (abfd
, (bfd_size_type
) GO32_STUBSIZE
);
2097 if (coff
->go32stub
== NULL
)
2100 if (coff
->go32stub
!= NULL
)
2101 memcpy (coff
->go32stub
, internal_f
->go32stub
, GO32_STUBSIZE
);
2107 /* Determine the machine architecture and type. FIXME: This is target
2108 dependent because the magic numbers are defined in the target
2109 dependent header files. But there is no particular need for this.
2110 If the magic numbers were moved to a separate file, this function
2111 would be target independent and would also be much more successful
2112 at linking together COFF files for different architectures. */
2115 coff_set_arch_mach_hook (bfd
*abfd
, void * filehdr
)
2117 unsigned long machine
;
2118 enum bfd_architecture arch
;
2119 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
2121 /* Zero selects the default machine for an arch. */
2123 switch (internal_f
->f_magic
)
2127 arch
= bfd_arch_powerpc
;
2133 case I386AIXMAGIC
: /* Danbury PS/2 AIX C Compiler. */
2134 case LYNXCOFFMAGIC
: /* Shadows the m68k Lynx number below, sigh. */
2135 arch
= bfd_arch_i386
;
2140 arch
= bfd_arch_i386
;
2141 machine
= bfd_mach_x86_64
;
2146 arch
= bfd_arch_ia64
;
2153 arch
= bfd_arch_arm
;
2154 machine
= bfd_arm_get_mach_from_notes (abfd
, ARM_NOTE_SECTION
);
2155 if (machine
== bfd_mach_arm_unknown
)
2157 switch (internal_f
->f_flags
& F_ARM_ARCHITECTURE_MASK
)
2159 case F_ARM_2
: machine
= bfd_mach_arm_2
; break;
2160 case F_ARM_2a
: machine
= bfd_mach_arm_2a
; break;
2161 case F_ARM_3
: machine
= bfd_mach_arm_3
; break;
2163 case F_ARM_3M
: machine
= bfd_mach_arm_3M
; break;
2164 case F_ARM_4
: machine
= bfd_mach_arm_4
; break;
2165 case F_ARM_4T
: machine
= bfd_mach_arm_4T
; break;
2166 /* The COFF header does not have enough bits available
2167 to cover all the different ARM architectures. So
2168 we interpret F_ARM_5, the highest flag value to mean
2169 "the highest ARM architecture known to BFD" which is
2170 currently the XScale. */
2171 case F_ARM_5
: machine
= bfd_mach_arm_XScale
; break;
2179 #ifdef MC68KBCSMAGIC
2182 #ifdef APOLLOM68KMAGIC
2183 case APOLLOM68KMAGIC
:
2185 #ifdef LYNXCOFFMAGIC
2188 arch
= bfd_arch_m68k
;
2189 machine
= bfd_mach_m68020
;
2196 arch
= bfd_arch_m88k
;
2202 arch
= bfd_arch_z80
;
2203 switch (internal_f
->f_flags
& F_MACHMASK
)
2206 case bfd_mach_z80strict
<< 12:
2207 case bfd_mach_z80
<< 12:
2208 case bfd_mach_z80full
<< 12:
2209 case bfd_mach_r800
<< 12:
2210 machine
= ((unsigned)internal_f
->f_flags
& F_MACHMASK
) >> 12;
2219 arch
= bfd_arch_z8k
;
2220 switch (internal_f
->f_flags
& F_MACHMASK
)
2223 machine
= bfd_mach_z8001
;
2226 machine
= bfd_mach_z8002
;
2235 arch
= bfd_arch_i860
;
2242 arch
= bfd_arch_i960
;
2243 switch (F_I960TYPE
& internal_f
->f_flags
)
2247 machine
= bfd_mach_i960_core
;
2250 machine
= bfd_mach_i960_kb_sb
;
2253 machine
= bfd_mach_i960_mc
;
2256 machine
= bfd_mach_i960_xa
;
2259 machine
= bfd_mach_i960_ca
;
2262 machine
= bfd_mach_i960_ka_sa
;
2265 machine
= bfd_mach_i960_jx
;
2268 machine
= bfd_mach_i960_hx
;
2287 if (xcoff_data (abfd
)->cputype
!= -1)
2288 cputype
= xcoff_data (abfd
)->cputype
& 0xff;
2291 /* We did not get a value from the a.out header. If the
2292 file has not been stripped, we may be able to get the
2293 architecture information from the first symbol, if it
2294 is a .file symbol. */
2295 if (obj_raw_syment_count (abfd
) == 0)
2300 struct internal_syment sym
;
2301 bfd_size_type amt
= bfd_coff_symesz (abfd
);
2303 buf
= bfd_malloc (amt
);
2306 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
2307 || bfd_bread (buf
, amt
, abfd
) != amt
)
2312 bfd_coff_swap_sym_in (abfd
, buf
, & sym
);
2313 if (sym
.n_sclass
== C_FILE
)
2314 cputype
= sym
.n_type
& 0xff;
2321 /* FIXME: We don't handle all cases here. */
2326 arch
= bfd_xcoff_architecture (abfd
);
2327 machine
= bfd_xcoff_machine (abfd
);
2331 arch
= bfd_arch_powerpc
;
2332 machine
= bfd_mach_ppc_601
;
2334 case 2: /* 64 bit PowerPC */
2335 arch
= bfd_arch_powerpc
;
2336 machine
= bfd_mach_ppc_620
;
2339 arch
= bfd_arch_powerpc
;
2340 machine
= bfd_mach_ppc
;
2343 arch
= bfd_arch_rs6000
;
2344 machine
= bfd_mach_rs6k
;
2353 arch
= bfd_arch_we32k
;
2359 arch
= bfd_arch_h8300
;
2360 machine
= bfd_mach_h8300
;
2361 /* !! FIXME this probably isn't the right place for this. */
2362 abfd
->flags
|= BFD_IS_RELAXABLE
;
2368 arch
= bfd_arch_h8300
;
2369 machine
= bfd_mach_h8300h
;
2370 /* !! FIXME this probably isn't the right place for this. */
2371 abfd
->flags
|= BFD_IS_RELAXABLE
;
2377 arch
= bfd_arch_h8300
;
2378 machine
= bfd_mach_h8300s
;
2379 /* !! FIXME this probably isn't the right place for this. */
2380 abfd
->flags
|= BFD_IS_RELAXABLE
;
2386 arch
= bfd_arch_h8300
;
2387 machine
= bfd_mach_h8300hn
;
2388 /* !! FIXME this probably isn't the right place for this. */
2389 abfd
->flags
|= BFD_IS_RELAXABLE
;
2395 arch
= bfd_arch_h8300
;
2396 machine
= bfd_mach_h8300sn
;
2397 /* !! FIXME this probably isn't the right place for this. */
2398 abfd
->flags
|= BFD_IS_RELAXABLE
;
2402 #ifdef SH_ARCH_MAGIC_BIG
2403 case SH_ARCH_MAGIC_BIG
:
2404 case SH_ARCH_MAGIC_LITTLE
:
2406 case SH_ARCH_MAGIC_WINCE
:
2412 #ifdef MIPS_ARCH_MAGIC_WINCE
2413 case MIPS_ARCH_MAGIC_WINCE
:
2414 arch
= bfd_arch_mips
;
2420 arch
= bfd_arch_h8500
;
2426 #ifdef LYNXCOFFMAGIC
2429 arch
= bfd_arch_sparc
;
2435 arch
= bfd_arch_tic30
;
2440 #ifdef TICOFF_TARGET_ARCH
2441 /* This TI COFF section should be used by all new TI COFF v0 targets. */
2443 arch
= TICOFF_TARGET_ARCH
;
2444 machine
= TICOFF_TARGET_MACHINE_GET (internal_f
->f_flags
);
2450 /* This TI COFF section should be used by all new TI COFF v1/2 targets. */
2451 /* TI COFF1 and COFF2 use the target_id field to specify which arch. */
2454 switch (internal_f
->f_target_id
)
2458 arch
= TICOFF_TARGET_ARCH
;
2459 machine
= TICOFF_TARGET_MACHINE_GET (internal_f
->f_flags
);
2463 arch
= bfd_arch_obscure
;
2465 (_("Unrecognized TI COFF target id '0x%x'"),
2466 internal_f
->f_target_id
);
2472 #ifdef TIC80_ARCH_MAGIC
2473 case TIC80_ARCH_MAGIC
:
2474 arch
= bfd_arch_tic80
;
2480 arch
= bfd_arch_mcore
;
2486 arch
= bfd_arch_w65
;
2490 default: /* Unreadable input file type. */
2491 arch
= bfd_arch_obscure
;
2495 bfd_default_set_arch_mach (abfd
, arch
, machine
);
2499 #ifdef SYMNAME_IN_DEBUG
2502 symname_in_debug_hook (bfd
* abfd ATTRIBUTE_UNUSED
, struct internal_syment
*sym
)
2504 return SYMNAME_IN_DEBUG (sym
) != 0;
2509 #define symname_in_debug_hook \
2510 (bfd_boolean (*) (bfd *, struct internal_syment *)) bfd_false
2517 #define FORCE_SYMNAMES_IN_STRINGS
2520 /* Handle the csect auxent of a C_EXT, C_AIX_WEAKEXT or C_HIDEXT symbol. */
2523 coff_pointerize_aux_hook (bfd
*abfd ATTRIBUTE_UNUSED
,
2524 combined_entry_type
*table_base
,
2525 combined_entry_type
*symbol
,
2526 unsigned int indaux
,
2527 combined_entry_type
*aux
)
2529 BFD_ASSERT (symbol
->is_sym
);
2530 int n_sclass
= symbol
->u
.syment
.n_sclass
;
2532 if (CSECT_SYM_P (n_sclass
)
2533 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2535 BFD_ASSERT (! aux
->is_sym
);
2536 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) == XTY_LD
)
2538 aux
->u
.auxent
.x_csect
.x_scnlen
.p
=
2539 table_base
+ aux
->u
.auxent
.x_csect
.x_scnlen
.l
;
2540 aux
->fix_scnlen
= 1;
2543 /* Return TRUE to indicate that the caller should not do any
2544 further work on this auxent. */
2548 /* Return FALSE to indicate that this auxent should be handled by
2556 /* We don't want to pointerize bal entries. */
2559 coff_pointerize_aux_hook (bfd
*abfd ATTRIBUTE_UNUSED
,
2560 combined_entry_type
*table_base ATTRIBUTE_UNUSED
,
2561 combined_entry_type
*symbol
,
2562 unsigned int indaux
,
2563 combined_entry_type
*aux ATTRIBUTE_UNUSED
)
2565 /* Return TRUE if we don't want to pointerize this aux entry, which
2566 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2569 && (symbol
->u
.syment
.n_sclass
== C_LEAFPROC
2570 || symbol
->u
.syment
.n_sclass
== C_LEAFSTAT
2571 || symbol
->u
.syment
.n_sclass
== C_LEAFEXT
));
2576 #define coff_pointerize_aux_hook 0
2579 #endif /* ! RS6000COFF_C */
2581 /* Print an aux entry. This returns TRUE if it has printed it. */
2584 coff_print_aux (bfd
*abfd ATTRIBUTE_UNUSED
,
2585 FILE *file ATTRIBUTE_UNUSED
,
2586 combined_entry_type
*table_base ATTRIBUTE_UNUSED
,
2587 combined_entry_type
*symbol ATTRIBUTE_UNUSED
,
2588 combined_entry_type
*aux ATTRIBUTE_UNUSED
,
2589 unsigned int indaux ATTRIBUTE_UNUSED
)
2591 BFD_ASSERT (symbol
->is_sym
);
2592 BFD_ASSERT (! aux
->is_sym
);
2594 if (CSECT_SYM_P (symbol
->u
.syment
.n_sclass
)
2595 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
2597 /* This is a csect entry. */
2598 fprintf (file
, "AUX ");
2599 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) != XTY_LD
)
2601 BFD_ASSERT (! aux
->fix_scnlen
);
2602 fprintf (file
, "val %5" BFD_VMA_FMT
"d",
2603 aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2607 fprintf (file
, "indx ");
2608 if (! aux
->fix_scnlen
)
2609 fprintf (file
, "%4" BFD_VMA_FMT
"d",
2610 aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
2612 fprintf (file
, "%4ld",
2613 (long) (aux
->u
.auxent
.x_csect
.x_scnlen
.p
- table_base
));
2616 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2617 aux
->u
.auxent
.x_csect
.x_parmhash
,
2618 (unsigned int) aux
->u
.auxent
.x_csect
.x_snhash
,
2619 SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
),
2620 SMTYP_ALIGN (aux
->u
.auxent
.x_csect
.x_smtyp
),
2621 (unsigned int) aux
->u
.auxent
.x_csect
.x_smclas
,
2622 aux
->u
.auxent
.x_csect
.x_stab
,
2623 (unsigned int) aux
->u
.auxent
.x_csect
.x_snstab
);
2628 /* Return FALSE to indicate that no special action was taken. */
2636 To write relocations, the back end steps though the
2637 canonical relocation table and create an
2638 @code{internal_reloc}. The symbol index to use is removed from
2639 the @code{offset} field in the symbol table supplied. The
2640 address comes directly from the sum of the section base
2641 address and the relocation offset; the type is dug directly
2642 from the howto field. Then the @code{internal_reloc} is
2643 swapped into the shape of an @code{external_reloc} and written
2651 /* AUX's ld wants relocations to be sorted. */
2653 compare_arelent_ptr (const void * x
, const void * y
)
2655 const arelent
**a
= (const arelent
**) x
;
2656 const arelent
**b
= (const arelent
**) y
;
2657 bfd_size_type aadr
= (*a
)->address
;
2658 bfd_size_type badr
= (*b
)->address
;
2660 return (aadr
< badr
? -1 : badr
< aadr
? 1 : 0);
2663 #endif /* TARG_AUX */
2666 coff_write_relocs (bfd
* abfd
, int first_undef
)
2670 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2673 struct external_reloc dst
;
2680 /* Sort relocations before we write them out. */
2683 amt
= s
->reloc_count
;
2684 amt
*= sizeof (arelent
*);
2685 p
= bfd_malloc (amt
);
2688 if (s
->reloc_count
> 0)
2693 memcpy (p
, s
->orelocation
, (size_t) amt
);
2694 qsort (p
, s
->reloc_count
, sizeof (arelent
*), compare_arelent_ptr
);
2699 if (bfd_seek (abfd
, s
->rel_filepos
, SEEK_SET
) != 0)
2703 if (obj_pe (abfd
) && s
->reloc_count
>= 0xffff)
2705 /* Encode real count here as first reloc. */
2706 struct internal_reloc n
;
2708 memset (& n
, 0, sizeof (n
));
2709 /* Add one to count *this* reloc (grr). */
2710 n
.r_vaddr
= s
->reloc_count
+ 1;
2711 coff_swap_reloc_out (abfd
, &n
, &dst
);
2712 if (bfd_bwrite (& dst
, (bfd_size_type
) bfd_coff_relsz (abfd
),
2713 abfd
) != bfd_coff_relsz (abfd
))
2718 for (i
= 0; i
< s
->reloc_count
; i
++)
2720 struct internal_reloc n
;
2723 memset (& n
, 0, sizeof (n
));
2725 /* Now we've renumbered the symbols we know where the
2726 undefined symbols live in the table. Check the reloc
2727 entries for symbols who's output bfd isn't the right one.
2728 This is because the symbol was undefined (which means
2729 that all the pointers are never made to point to the same
2730 place). This is a bad thing,'cause the symbols attached
2731 to the output bfd are indexed, so that the relocation
2732 entries know which symbol index they point to. So we
2733 have to look up the output symbol here. */
2735 if (q
->sym_ptr_ptr
[0] != NULL
&& q
->sym_ptr_ptr
[0]->the_bfd
!= abfd
)
2738 const char *sname
= q
->sym_ptr_ptr
[0]->name
;
2739 asymbol
**outsyms
= abfd
->outsymbols
;
2741 for (j
= first_undef
; outsyms
[j
]; j
++)
2743 const char *intable
= outsyms
[j
]->name
;
2745 if (strcmp (intable
, sname
) == 0)
2747 /* Got a hit, so repoint the reloc. */
2748 q
->sym_ptr_ptr
= outsyms
+ j
;
2754 n
.r_vaddr
= q
->address
+ s
->vma
;
2757 /* The 29k const/consth reloc pair is a real kludge. The consth
2758 part doesn't have a symbol; it has an offset. So rebuilt
2760 if (q
->howto
->type
== R_IHCONST
)
2761 n
.r_symndx
= q
->addend
;
2764 if (q
->sym_ptr_ptr
&& q
->sym_ptr_ptr
[0] != NULL
)
2766 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2767 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q
, s
))
2769 if ((*q
->sym_ptr_ptr
)->section
== bfd_abs_section_ptr
2770 && ((*q
->sym_ptr_ptr
)->flags
& BSF_SECTION_SYM
) != 0)
2772 /* This is a relocation relative to the absolute symbol. */
2776 n
.r_symndx
= get_index ((*(q
->sym_ptr_ptr
)));
2777 /* Check to see if the symbol reloc points to a symbol
2778 we don't have in our symbol table. */
2779 if (n
.r_symndx
> obj_conv_table_size (abfd
))
2781 bfd_set_error (bfd_error_bad_value
);
2782 /* xgettext:c-format */
2783 _bfd_error_handler (_("%B: reloc against a non-existent"
2784 " symbol index: %ld"),
2791 #ifdef SWAP_OUT_RELOC_OFFSET
2792 n
.r_offset
= q
->addend
;
2796 /* Work out reloc type from what is required. */
2797 SELECT_RELOC (n
, q
->howto
);
2799 n
.r_type
= q
->howto
->type
;
2801 coff_swap_reloc_out (abfd
, &n
, &dst
);
2803 if (bfd_bwrite (& dst
, (bfd_size_type
) bfd_coff_relsz (abfd
),
2804 abfd
) != bfd_coff_relsz (abfd
))
2817 /* Set flags and magic number of a coff file from architecture and machine
2818 type. Result is TRUE if we can represent the arch&type, FALSE if not. */
2821 coff_set_flags (bfd
* abfd
,
2822 unsigned int *magicp ATTRIBUTE_UNUSED
,
2823 unsigned short *flagsp ATTRIBUTE_UNUSED
)
2825 switch (bfd_get_arch (abfd
))
2830 switch (bfd_get_mach (abfd
))
2833 case bfd_mach_z80strict
:
2835 case bfd_mach_z80full
:
2837 *flagsp
= bfd_get_mach (abfd
) << 12;
2849 switch (bfd_get_mach (abfd
))
2851 case bfd_mach_z8001
: *flagsp
= F_Z8001
; break;
2852 case bfd_mach_z8002
: *flagsp
= F_Z8002
; break;
2853 default: return FALSE
;
2864 *magicp
= I960ROMAGIC
;
2866 switch (bfd_get_mach (abfd
))
2868 case bfd_mach_i960_core
: flags
= F_I960CORE
; break;
2869 case bfd_mach_i960_kb_sb
: flags
= F_I960KB
; break;
2870 case bfd_mach_i960_mc
: flags
= F_I960MC
; break;
2871 case bfd_mach_i960_xa
: flags
= F_I960XA
; break;
2872 case bfd_mach_i960_ca
: flags
= F_I960CA
; break;
2873 case bfd_mach_i960_ka_sa
: flags
= F_I960KA
; break;
2874 case bfd_mach_i960_jx
: flags
= F_I960JX
; break;
2875 case bfd_mach_i960_hx
: flags
= F_I960HX
; break;
2876 default: return FALSE
;
2885 case bfd_arch_tic30
:
2886 *magicp
= TIC30MAGIC
;
2890 #ifdef TICOFF_DEFAULT_MAGIC
2891 case TICOFF_TARGET_ARCH
:
2892 /* If there's no indication of which version we want, use the default. */
2894 *magicp
= TICOFF_DEFAULT_MAGIC
;
2897 /* We may want to output in a different COFF version. */
2898 switch (abfd
->xvec
->name
[4])
2901 *magicp
= TICOFF0MAGIC
;
2904 *magicp
= TICOFF1MAGIC
;
2907 *magicp
= TICOFF2MAGIC
;
2913 TICOFF_TARGET_MACHINE_SET (flagsp
, bfd_get_mach (abfd
));
2917 #ifdef TIC80_ARCH_MAGIC
2918 case bfd_arch_tic80
:
2919 *magicp
= TIC80_ARCH_MAGIC
;
2926 * magicp
= ARMPEMAGIC
;
2928 * magicp
= ARMMAGIC
;
2931 if (APCS_SET (abfd
))
2933 if (APCS_26_FLAG (abfd
))
2934 * flagsp
|= F_APCS26
;
2936 if (APCS_FLOAT_FLAG (abfd
))
2937 * flagsp
|= F_APCS_FLOAT
;
2939 if (PIC_FLAG (abfd
))
2942 if (INTERWORK_SET (abfd
) && INTERWORK_FLAG (abfd
))
2943 * flagsp
|= F_INTERWORK
;
2944 switch (bfd_get_mach (abfd
))
2946 case bfd_mach_arm_2
: * flagsp
|= F_ARM_2
; break;
2947 case bfd_mach_arm_2a
: * flagsp
|= F_ARM_2a
; break;
2948 case bfd_mach_arm_3
: * flagsp
|= F_ARM_3
; break;
2949 case bfd_mach_arm_3M
: * flagsp
|= F_ARM_3M
; break;
2950 case bfd_mach_arm_4
: * flagsp
|= F_ARM_4
; break;
2951 case bfd_mach_arm_4T
: * flagsp
|= F_ARM_4T
; break;
2952 case bfd_mach_arm_5
: * flagsp
|= F_ARM_5
; break;
2953 /* FIXME: we do not have F_ARM vaues greater than F_ARM_5.
2954 See also the comment in coff_set_arch_mach_hook(). */
2955 case bfd_mach_arm_5T
: * flagsp
|= F_ARM_5
; break;
2956 case bfd_mach_arm_5TE
: * flagsp
|= F_ARM_5
; break;
2957 case bfd_mach_arm_XScale
: * flagsp
|= F_ARM_5
; break;
2963 case bfd_arch_powerpc
:
2968 #if defined(I386MAGIC) || defined(AMD64MAGIC)
2970 #if defined(I386MAGIC)
2971 *magicp
= I386MAGIC
;
2974 /* Just overwrite the usual value if we're doing Lynx. */
2975 *magicp
= LYNXCOFFMAGIC
;
2977 #if defined AMD64MAGIC
2978 *magicp
= AMD64MAGIC
;
2985 *magicp
= I860MAGIC
;
2991 *magicp
= IA64MAGIC
;
2997 #ifdef APOLLOM68KMAGIC
2998 *magicp
= APOLLO_COFF_VERSION_NUMBER
;
3000 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
3001 #ifdef NAMES_HAVE_UNDERSCORE
3002 *magicp
= MC68KBCSMAGIC
;
3004 *magicp
= MC68MAGIC
;
3008 /* Just overwrite the usual value if we're doing Lynx. */
3009 *magicp
= LYNXCOFFMAGIC
;
3016 *magicp
= MC88OMAGIC
;
3021 case bfd_arch_h8300
:
3022 switch (bfd_get_mach (abfd
))
3024 case bfd_mach_h8300
: *magicp
= H8300MAGIC
; return TRUE
;
3025 case bfd_mach_h8300h
: *magicp
= H8300HMAGIC
; return TRUE
;
3026 case bfd_mach_h8300s
: *magicp
= H8300SMAGIC
; return TRUE
;
3027 case bfd_mach_h8300hn
: *magicp
= H8300HNMAGIC
; return TRUE
;
3028 case bfd_mach_h8300sn
: *magicp
= H8300SNMAGIC
; return TRUE
;
3034 #ifdef SH_ARCH_MAGIC_BIG
3036 #ifdef COFF_IMAGE_WITH_PE
3037 *magicp
= SH_ARCH_MAGIC_WINCE
;
3039 if (bfd_big_endian (abfd
))
3040 *magicp
= SH_ARCH_MAGIC_BIG
;
3042 *magicp
= SH_ARCH_MAGIC_LITTLE
;
3047 #ifdef MIPS_ARCH_MAGIC_WINCE
3049 *magicp
= MIPS_ARCH_MAGIC_WINCE
;
3054 case bfd_arch_sparc
:
3055 *magicp
= SPARCMAGIC
;
3057 /* Just overwrite the usual value if we're doing Lynx. */
3058 *magicp
= LYNXCOFFMAGIC
;
3064 case bfd_arch_h8500
:
3065 *magicp
= H8500MAGIC
;
3071 case bfd_arch_we32k
:
3072 *magicp
= WE32KMAGIC
;
3077 case bfd_arch_rs6000
:
3079 case bfd_arch_powerpc
:
3081 BFD_ASSERT (bfd_get_flavour (abfd
) == bfd_target_xcoff_flavour
);
3082 *magicp
= bfd_xcoff_magic_number (abfd
);
3087 case bfd_arch_mcore
:
3088 * magicp
= MCOREMAGIC
;
3098 default: /* Unknown architecture. */
3099 /* Fall through to "return FALSE" below, to avoid
3100 "statement never reached" errors on the one below. */
3108 coff_set_arch_mach (bfd
* abfd
,
3109 enum bfd_architecture arch
,
3110 unsigned long machine
)
3113 unsigned short dummy2
;
3115 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
3118 if (arch
!= bfd_arch_unknown
3119 && ! coff_set_flags (abfd
, &dummy1
, &dummy2
))
3120 return FALSE
; /* We can't represent this type. */
3122 return TRUE
; /* We're easy... */
3125 #ifdef COFF_IMAGE_WITH_PE
3127 /* This is used to sort sections by VMA, as required by PE image
3131 sort_by_secaddr (const void * arg1
, const void * arg2
)
3133 const asection
*a
= *(const asection
**) arg1
;
3134 const asection
*b
= *(const asection
**) arg2
;
3136 if (a
->vma
< b
->vma
)
3138 else if (a
->vma
> b
->vma
)
3144 #endif /* COFF_IMAGE_WITH_PE */
3146 /* Calculate the file position for each section. */
3149 #define ALIGN_SECTIONS_IN_FILE
3151 #if defined(TIC80COFF) || defined(TICOFF)
3152 #undef ALIGN_SECTIONS_IN_FILE
3156 coff_compute_section_file_positions (bfd
* abfd
)
3159 file_ptr sofar
= bfd_coff_filhsz (abfd
);
3160 bfd_boolean align_adjust
;
3161 unsigned int target_index
;
3162 #ifdef ALIGN_SECTIONS_IN_FILE
3163 asection
*previous
= NULL
;
3167 #ifdef COFF_IMAGE_WITH_PE
3170 if (coff_data (abfd
)->link_info
3171 || (pe_data (abfd
) && pe_data (abfd
)->pe_opthdr
.FileAlignment
))
3173 page_size
= pe_data (abfd
)->pe_opthdr
.FileAlignment
;
3175 /* If no file alignment has been set, default to one.
3176 This repairs 'ld -r' for arm-wince-pe target. */
3180 /* PR 17512: file: 0ac816d3. */
3183 bfd_set_error (bfd_error_file_too_big
);
3185 /* xgettext:c-format */
3186 (_("%B: page size is too large (0x%x)"), abfd
, page_size
);
3191 page_size
= PE_DEF_FILE_ALIGNMENT
;
3193 #ifdef COFF_PAGE_SIZE
3194 int page_size
= COFF_PAGE_SIZE
;
3199 /* On XCOFF, if we have symbols, set up the .debug section. */
3200 if (bfd_get_symcount (abfd
) > 0)
3203 bfd_size_type i
, symcount
;
3207 symcount
= bfd_get_symcount (abfd
);
3208 for (symp
= abfd
->outsymbols
, i
= 0; i
< symcount
; symp
++, i
++)
3210 coff_symbol_type
*cf
;
3212 cf
= coff_symbol_from (*symp
);
3214 && cf
->native
!= NULL
3215 && cf
->native
->is_sym
3216 && SYMNAME_IN_DEBUG (&cf
->native
->u
.syment
))
3220 len
= strlen (bfd_asymbol_name (*symp
));
3221 if (len
> SYMNMLEN
|| bfd_coff_force_symnames_in_strings (abfd
))
3222 sz
+= len
+ 1 + bfd_coff_debug_string_prefix_length (abfd
);
3229 dsec
= bfd_make_section_old_way (abfd
, DOT_DEBUG
);
3233 dsec
->flags
|= SEC_HAS_CONTENTS
;
3238 if (bfd_get_start_address (abfd
))
3239 /* A start address may have been added to the original file. In this
3240 case it will need an optional header to record it. */
3241 abfd
->flags
|= EXEC_P
;
3243 if (abfd
->flags
& EXEC_P
)
3244 sofar
+= bfd_coff_aoutsz (abfd
);
3246 else if (xcoff_data (abfd
)->full_aouthdr
)
3247 sofar
+= bfd_coff_aoutsz (abfd
);
3249 sofar
+= SMALL_AOUTSZ
;
3252 sofar
+= abfd
->section_count
* bfd_coff_scnhsz (abfd
);
3255 /* XCOFF handles overflows in the reloc and line number count fields
3256 by allocating a new section header to hold the correct counts. */
3257 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
3258 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3259 sofar
+= bfd_coff_scnhsz (abfd
);
3262 #ifdef COFF_IMAGE_WITH_PE
3264 /* PE requires the sections to be in memory order when listed in
3265 the section headers. It also does not like empty loadable
3266 sections. The sections apparently do not have to be in the
3267 right order in the image file itself, but we do need to get the
3268 target_index values right. */
3271 asection
**section_list
;
3275 #ifdef COFF_PAGE_SIZE
3276 /* Clear D_PAGED if section alignment is smaller than
3278 if (pe_data (abfd
)->pe_opthdr
.SectionAlignment
< COFF_PAGE_SIZE
)
3279 abfd
->flags
&= ~D_PAGED
;
3283 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
3286 /* We allocate an extra cell to simplify the final loop. */
3287 amt
= sizeof (struct asection
*) * (count
+ 1);
3288 section_list
= (asection
**) bfd_malloc (amt
);
3289 if (section_list
== NULL
)
3293 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
3295 section_list
[i
] = current
;
3298 section_list
[i
] = NULL
;
3300 qsort (section_list
, count
, sizeof (asection
*), sort_by_secaddr
);
3302 /* Rethread the linked list into sorted order; at the same time,
3303 assign target_index values. */
3305 abfd
->sections
= NULL
;
3306 abfd
->section_last
= NULL
;
3307 for (i
= 0; i
< count
; i
++)
3309 current
= section_list
[i
];
3310 bfd_section_list_append (abfd
, current
);
3312 /* Later, if the section has zero size, we'll be throwing it
3313 away, so we don't want to number it now. Note that having
3314 a zero size and having real contents are different
3315 concepts: .bss has no contents, but (usually) non-zero
3317 if (current
->size
== 0)
3319 /* Discard. However, it still might have (valid) symbols
3320 in it, so arbitrarily set it to section 1 (indexing is
3321 1-based here; usually .text). __end__ and other
3322 contents of .endsection really have this happen.
3323 FIXME: This seems somewhat dubious. */
3324 current
->target_index
= 1;
3327 current
->target_index
= target_index
++;
3330 free (section_list
);
3332 #else /* ! COFF_IMAGE_WITH_PE */
3334 /* Set the target_index field. */
3336 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
3337 current
->target_index
= target_index
++;
3339 #endif /* ! COFF_IMAGE_WITH_PE */
3341 if (target_index
>= bfd_coff_max_nscns (abfd
))
3343 bfd_set_error (bfd_error_file_too_big
);
3345 /* xgettext:c-format */
3346 (_("%B: too many sections (%d)"), abfd
, target_index
);
3350 align_adjust
= FALSE
;
3351 for (current
= abfd
->sections
;
3353 current
= current
->next
)
3355 #ifdef COFF_IMAGE_WITH_PE
3356 /* With PE we have to pad each section to be a multiple of its
3357 page size too, and remember both sizes. */
3358 if (coff_section_data (abfd
, current
) == NULL
)
3360 bfd_size_type amt
= sizeof (struct coff_section_tdata
);
3362 current
->used_by_bfd
= bfd_zalloc (abfd
, amt
);
3363 if (current
->used_by_bfd
== NULL
)
3366 if (pei_section_data (abfd
, current
) == NULL
)
3368 bfd_size_type amt
= sizeof (struct pei_section_tdata
);
3370 coff_section_data (abfd
, current
)->tdata
= bfd_zalloc (abfd
, amt
);
3371 if (coff_section_data (abfd
, current
)->tdata
== NULL
)
3374 if (pei_section_data (abfd
, current
)->virt_size
== 0)
3375 pei_section_data (abfd
, current
)->virt_size
= current
->size
;
3378 /* Only deal with sections which have contents. */
3379 if (!(current
->flags
& SEC_HAS_CONTENTS
))
3382 current
->rawsize
= current
->size
;
3384 #ifdef COFF_IMAGE_WITH_PE
3385 /* Make sure we skip empty sections in a PE image. */
3386 if (current
->size
== 0)
3390 /* Align the sections in the file to the same boundary on
3391 which they are aligned in virtual memory. I960 doesn't
3392 do this (FIXME) so we can stay in sync with Intel. 960
3393 doesn't yet page from files... */
3394 #ifdef ALIGN_SECTIONS_IN_FILE
3395 if ((abfd
->flags
& EXEC_P
) != 0)
3397 /* Make sure this section is aligned on the right boundary - by
3398 padding the previous section up if necessary. */
3401 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
3404 /* Make sure the file offset and the vma of .text/.data are at the
3405 same page offset, so that the file can be mmap'ed without being
3406 relocated. Failing that, AIX is able to load and execute the
3407 program, but it will be silently relocated (possible as
3408 executables are PIE). But the relocation is slightly costly and
3409 complexify the use of addr2line or gdb. So better to avoid it,
3410 like does the native linker. Usually gnu ld makes sure that
3411 the vma of .text is the file offset so this issue shouldn't
3412 appear unless you are stripping such an executable.
3414 AIX loader checks the text section alignment of (vma - filepos),
3415 and the native linker doesn't try to align the text sections.
3418 0 .text 000054cc 10000128 10000128 00000128 2**5
3419 CONTENTS, ALLOC, LOAD, CODE
3422 if (!strcmp (current
->name
, _TEXT
)
3423 || !strcmp (current
->name
, _DATA
))
3425 bfd_vma align
= 4096;
3426 bfd_vma sofar_off
= sofar
% align
;
3427 bfd_vma vma_off
= current
->vma
% align
;
3429 if (vma_off
> sofar_off
)
3430 sofar
+= vma_off
- sofar_off
;
3431 else if (vma_off
< sofar_off
)
3432 sofar
+= align
+ vma_off
- sofar_off
;
3435 if (previous
!= NULL
)
3436 previous
->size
+= sofar
- old_sofar
;
3441 /* In demand paged files the low order bits of the file offset
3442 must match the low order bits of the virtual address. */
3443 #ifdef COFF_PAGE_SIZE
3444 if ((abfd
->flags
& D_PAGED
) != 0
3445 && (current
->flags
& SEC_ALLOC
) != 0)
3446 sofar
+= (current
->vma
- (bfd_vma
) sofar
) % page_size
;
3448 current
->filepos
= sofar
;
3450 #ifdef COFF_IMAGE_WITH_PE
3451 /* Set the padded size. */
3452 current
->size
= (current
->size
+ page_size
- 1) & -page_size
;
3455 sofar
+= current
->size
;
3457 #ifdef ALIGN_SECTIONS_IN_FILE
3458 /* Make sure that this section is of the right size too. */
3459 if ((abfd
->flags
& EXEC_P
) == 0)
3461 bfd_size_type old_size
;
3463 old_size
= current
->size
;
3464 current
->size
= BFD_ALIGN (current
->size
,
3465 1 << current
->alignment_power
);
3466 align_adjust
= current
->size
!= old_size
;
3467 sofar
+= current
->size
- old_size
;
3472 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
3473 align_adjust
= sofar
!= old_sofar
;
3474 current
->size
+= sofar
- old_sofar
;
3478 #ifdef COFF_IMAGE_WITH_PE
3479 /* For PE we need to make sure we pad out to the aligned
3480 size, in case the caller only writes out data to the
3482 if (pei_section_data (abfd
, current
)->virt_size
< current
->size
)
3483 align_adjust
= TRUE
;
3487 /* Force .lib sections to start at zero. The vma is then
3488 incremented in coff_set_section_contents. This is right for
3490 if (strcmp (current
->name
, _LIB
) == 0)
3491 (void) bfd_set_section_vma (abfd
, current
, 0);
3494 #ifdef ALIGN_SECTIONS_IN_FILE
3499 /* It is now safe to write to the output file. If we needed an
3500 alignment adjustment for the last section, then make sure that
3501 there is a byte at offset sofar. If there are no symbols and no
3502 relocs, then nothing follows the last section. If we don't force
3503 the last byte out, then the file may appear to be truncated. */
3509 if (bfd_seek (abfd
, sofar
- 1, SEEK_SET
) != 0
3510 || bfd_bwrite (&b
, (bfd_size_type
) 1, abfd
) != 1)
3514 /* Make sure the relocations are aligned. We don't need to make
3515 sure that this byte exists, because it will only matter if there
3516 really are relocs. */
3517 sofar
= BFD_ALIGN (sofar
, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER
);
3519 obj_relocbase (abfd
) = sofar
;
3520 abfd
->output_has_begun
= TRUE
;
3525 #ifdef COFF_IMAGE_WITH_PE
3527 static unsigned int pelength
;
3528 static unsigned int peheader
;
3531 coff_read_word (bfd
*abfd
, unsigned int *value
)
3536 status
= bfd_bread (b
, (bfd_size_type
) 2, abfd
);
3544 *value
= (unsigned int) b
[0];
3546 *value
= (unsigned int) (b
[0] + (b
[1] << 8));
3548 pelength
+= (unsigned int) status
;
3554 coff_compute_checksum (bfd
*abfd
)
3556 bfd_boolean more_data
;
3563 filepos
= (file_ptr
) 0;
3567 if (bfd_seek (abfd
, filepos
, SEEK_SET
) != 0)
3570 more_data
= coff_read_word (abfd
, &value
);
3572 total
= 0xffff & (total
+ (total
>> 0x10));
3577 return (0xffff & (total
+ (total
>> 0x10)));
3581 coff_apply_checksum (bfd
*abfd
)
3583 unsigned int computed
;
3584 unsigned int checksum
= 0;
3586 if (bfd_seek (abfd
, 0x3c, SEEK_SET
) != 0)
3589 if (!coff_read_word (abfd
, &peheader
))
3592 if (bfd_seek (abfd
, peheader
+ 0x58, SEEK_SET
) != 0)
3596 bfd_bwrite (&checksum
, (bfd_size_type
) 4, abfd
);
3598 if (bfd_seek (abfd
, peheader
, SEEK_SET
) != 0)
3601 computed
= coff_compute_checksum (abfd
);
3603 checksum
= computed
+ pelength
;
3605 if (bfd_seek (abfd
, peheader
+ 0x58, SEEK_SET
) != 0)
3608 bfd_bwrite (&checksum
, (bfd_size_type
) 4, abfd
);
3613 #endif /* COFF_IMAGE_WITH_PE */
3616 coff_write_object_contents (bfd
* abfd
)
3619 bfd_boolean hasrelocs
= FALSE
;
3620 bfd_boolean haslinno
= FALSE
;
3621 #ifdef COFF_IMAGE_WITH_PE
3622 bfd_boolean hasdebug
= FALSE
;
3625 file_ptr reloc_base
;
3626 file_ptr lineno_base
;
3628 unsigned long reloc_size
= 0, reloc_count
= 0;
3629 unsigned long lnno_size
= 0;
3630 bfd_boolean long_section_names
;
3631 asection
*text_sec
= NULL
;
3632 asection
*data_sec
= NULL
;
3633 asection
*bss_sec
= NULL
;
3634 struct internal_filehdr internal_f
;
3635 struct internal_aouthdr internal_a
;
3636 #ifdef COFF_LONG_SECTION_NAMES
3637 size_t string_size
= STRING_SIZE_SIZE
;
3640 bfd_set_error (bfd_error_system_call
);
3642 /* Make a pass through the symbol table to count line number entries and
3643 put them into the correct asections. */
3644 lnno_size
= coff_count_linenumbers (abfd
) * bfd_coff_linesz (abfd
);
3646 if (! abfd
->output_has_begun
)
3648 if (! coff_compute_section_file_positions (abfd
))
3652 reloc_base
= obj_relocbase (abfd
);
3654 /* Work out the size of the reloc and linno areas. */
3656 for (current
= abfd
->sections
; current
!= NULL
; current
=
3660 /* We store the actual reloc count in the first reloc's addr. */
3661 if (obj_pe (abfd
) && current
->reloc_count
>= 0xffff)
3664 reloc_count
+= current
->reloc_count
;
3667 reloc_size
= reloc_count
* bfd_coff_relsz (abfd
);
3669 lineno_base
= reloc_base
+ reloc_size
;
3670 sym_base
= lineno_base
+ lnno_size
;
3672 /* Indicate in each section->line_filepos its actual file address. */
3673 for (current
= abfd
->sections
; current
!= NULL
; current
=
3676 if (current
->lineno_count
)
3678 current
->line_filepos
= lineno_base
;
3679 current
->moving_line_filepos
= lineno_base
;
3680 lineno_base
+= current
->lineno_count
* bfd_coff_linesz (abfd
);
3683 current
->line_filepos
= 0;
3685 if (current
->reloc_count
)
3687 current
->rel_filepos
= reloc_base
;
3688 reloc_base
+= current
->reloc_count
* bfd_coff_relsz (abfd
);
3690 /* Extra reloc to hold real count. */
3691 if (obj_pe (abfd
) && current
->reloc_count
>= 0xffff)
3692 reloc_base
+= bfd_coff_relsz (abfd
);
3696 current
->rel_filepos
= 0;
3699 /* Write section headers to the file. */
3700 internal_f
.f_nscns
= 0;
3702 if ((abfd
->flags
& EXEC_P
) != 0)
3703 scn_base
= bfd_coff_filhsz (abfd
) + bfd_coff_aoutsz (abfd
);
3706 scn_base
= bfd_coff_filhsz (abfd
);
3709 if (xcoff_data (abfd
)->full_aouthdr
)
3710 scn_base
+= bfd_coff_aoutsz (abfd
);
3712 scn_base
+= SMALL_AOUTSZ
;
3717 if (bfd_seek (abfd
, scn_base
, SEEK_SET
) != 0)
3720 long_section_names
= FALSE
;
3721 for (current
= abfd
->sections
;
3723 current
= current
->next
)
3725 struct internal_scnhdr section
;
3726 #ifdef COFF_IMAGE_WITH_PE
3727 bfd_boolean is_reloc_section
= FALSE
;
3729 if (strcmp (current
->name
, DOT_RELOC
) == 0)
3731 is_reloc_section
= TRUE
;
3733 pe_data (abfd
)->has_reloc_section
= 1;
3737 internal_f
.f_nscns
++;
3739 strncpy (section
.s_name
, current
->name
, SCNNMLEN
);
3741 #ifdef COFF_LONG_SECTION_NAMES
3742 /* Handle long section names as in PE. This must be compatible
3743 with the code in coff_write_symbols and _bfd_coff_final_link. */
3744 if (bfd_coff_long_section_names (abfd
))
3748 len
= strlen (current
->name
);
3751 /* The s_name field is defined to be NUL-padded but need not be
3752 NUL-terminated. We use a temporary buffer so that we can still
3753 sprintf all eight chars without splatting a terminating NUL
3754 over the first byte of the following member (s_paddr). */
3755 /* PR 21096: The +20 is to stop a bogus warning from gcc7 about
3756 a possible buffer overflow. */
3757 char s_name_buf
[SCNNMLEN
+ 1 + 20];
3759 /* An inherent limitation of the /nnnnnnn notation used to indicate
3760 the offset of the long name in the string table is that we
3761 cannot address entries beyone the ten million byte boundary. */
3762 if (string_size
>= 10000000)
3764 bfd_set_error (bfd_error_file_too_big
);
3766 /* xgettext:c-format */
3767 (_("%B: section %A: string table overflow at offset %ld"),
3768 abfd
, current
, string_size
);
3772 /* We do not need to use snprintf here as we have already verfied
3773 that string_size is not too big, plus we have an overlarge
3774 buffer, just in case. */
3775 sprintf (s_name_buf
, "/%lu", (unsigned long) string_size
);
3776 /* Then strncpy takes care of any padding for us. */
3777 strncpy (section
.s_name
, s_name_buf
, SCNNMLEN
);
3778 string_size
+= len
+ 1;
3779 long_section_names
= TRUE
;
3785 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3786 Ian Taylor <ian@cygnus.com>. */
3787 if (strcmp (current
->name
, _LIB
) == 0)
3788 section
.s_vaddr
= 0;
3791 section
.s_vaddr
= current
->vma
;
3792 section
.s_paddr
= current
->lma
;
3793 section
.s_size
= current
->size
;
3794 #ifdef coff_get_section_load_page
3795 section
.s_page
= coff_get_section_load_page (current
);
3801 section
.s_paddr
= 0;
3803 #ifdef COFF_IMAGE_WITH_PE
3804 /* Reminder: s_paddr holds the virtual size of the section. */
3805 if (coff_section_data (abfd
, current
) != NULL
3806 && pei_section_data (abfd
, current
) != NULL
)
3807 section
.s_paddr
= pei_section_data (abfd
, current
)->virt_size
;
3809 section
.s_paddr
= 0;
3812 /* If this section has no size or is unloadable then the scnptr
3814 if (current
->size
== 0
3815 || (current
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
3816 section
.s_scnptr
= 0;
3818 section
.s_scnptr
= current
->filepos
;
3820 section
.s_relptr
= current
->rel_filepos
;
3821 section
.s_lnnoptr
= current
->line_filepos
;
3822 section
.s_nreloc
= current
->reloc_count
;
3823 section
.s_nlnno
= current
->lineno_count
;
3824 #ifndef COFF_IMAGE_WITH_PE
3825 /* In PEI, relocs come in the .reloc section. */
3826 if (current
->reloc_count
!= 0)
3829 if (current
->lineno_count
!= 0)
3831 #ifdef COFF_IMAGE_WITH_PE
3832 if ((current
->flags
& SEC_DEBUGGING
) != 0
3833 && ! is_reloc_section
)
3839 /* Indicate the use of an XCOFF overflow section header. */
3840 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3842 section
.s_nreloc
= 0xffff;
3843 section
.s_nlnno
= 0xffff;
3848 section
.s_flags
= sec_to_styp_flags (current
->name
, current
->flags
);
3850 if (!strcmp (current
->name
, _TEXT
))
3852 else if (!strcmp (current
->name
, _DATA
))
3854 else if (!strcmp (current
->name
, _BSS
))
3858 section
.s_align
= (current
->alignment_power
3859 ? 1 << current
->alignment_power
3863 /* TI COFF puts the alignment power in bits 8-11 of the flags. */
3864 section
.s_flags
|= (current
->alignment_power
& 0xF) << 8;
3866 #ifdef COFF_ENCODE_ALIGNMENT
3867 COFF_ENCODE_ALIGNMENT(section
, current
->alignment_power
);
3870 #ifdef COFF_IMAGE_WITH_PE
3871 /* Suppress output of the sections if they are null. ld
3872 includes the bss and data sections even if there is no size
3873 assigned to them. NT loader doesn't like it if these section
3874 headers are included if the sections themselves are not
3875 needed. See also coff_compute_section_file_positions. */
3876 if (section
.s_size
== 0)
3877 internal_f
.f_nscns
--;
3882 bfd_size_type amt
= bfd_coff_scnhsz (abfd
);
3884 if (coff_swap_scnhdr_out (abfd
, §ion
, &buff
) == 0
3885 || bfd_bwrite (& buff
, amt
, abfd
) != amt
)
3890 /* PE stores COMDAT section information in the symbol table. If
3891 this section is supposed to have some COMDAT info, track down
3892 the symbol in the symbol table and modify it. */
3893 if ((current
->flags
& SEC_LINK_ONCE
) != 0)
3895 unsigned int i
, count
;
3897 coff_symbol_type
*csym
= NULL
;
3901 count
= bfd_get_symcount (abfd
);
3902 for (i
= 0, psym
= abfd
->outsymbols
; i
< count
; i
++, psym
++)
3904 if ((*psym
)->section
!= current
)
3907 /* Remember the location of the first symbol in this
3909 if (psymsec
== NULL
)
3912 /* See if this is the section symbol. */
3913 if (strcmp ((*psym
)->name
, current
->name
) == 0)
3915 csym
= coff_symbol_from (*psym
);
3917 || csym
->native
== NULL
3918 || ! csym
->native
->is_sym
3919 || csym
->native
->u
.syment
.n_numaux
< 1
3920 || csym
->native
->u
.syment
.n_sclass
!= C_STAT
3921 || csym
->native
->u
.syment
.n_type
!= T_NULL
)
3924 /* Here *PSYM is the section symbol for CURRENT. */
3931 Note that we might not if we're converting the file from
3932 some other object file format. */
3935 combined_entry_type
*aux
;
3937 /* We don't touch the x_checksum field. The
3938 x_associated field is not currently supported. */
3940 aux
= csym
->native
+ 1;
3941 BFD_ASSERT (! aux
->is_sym
);
3942 switch (current
->flags
& SEC_LINK_DUPLICATES
)
3944 case SEC_LINK_DUPLICATES_DISCARD
:
3945 aux
->u
.auxent
.x_scn
.x_comdat
= IMAGE_COMDAT_SELECT_ANY
;
3948 case SEC_LINK_DUPLICATES_ONE_ONLY
:
3949 aux
->u
.auxent
.x_scn
.x_comdat
=
3950 IMAGE_COMDAT_SELECT_NODUPLICATES
;
3953 case SEC_LINK_DUPLICATES_SAME_SIZE
:
3954 aux
->u
.auxent
.x_scn
.x_comdat
=
3955 IMAGE_COMDAT_SELECT_SAME_SIZE
;
3958 case SEC_LINK_DUPLICATES_SAME_CONTENTS
:
3959 aux
->u
.auxent
.x_scn
.x_comdat
=
3960 IMAGE_COMDAT_SELECT_EXACT_MATCH
;
3964 /* The COMDAT symbol must be the first symbol from this
3965 section in the symbol table. In order to make this
3966 work, we move the COMDAT symbol before the first
3967 symbol we found in the search above. It's OK to
3968 rearrange the symbol table at this point, because
3969 coff_renumber_symbols is going to rearrange it
3970 further and fix up all the aux entries. */
3971 if (psym
!= psymsec
)
3977 for (pcopy
= psym
; pcopy
> psymsec
; pcopy
--)
3978 pcopy
[0] = pcopy
[-1];
3983 #endif /* COFF_WITH_PE */
3988 /* XCOFF handles overflows in the reloc and line number count fields
3989 by creating a new section header to hold the correct values. */
3990 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
3992 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
3994 struct internal_scnhdr scnhdr
;
3998 internal_f
.f_nscns
++;
3999 memcpy (scnhdr
.s_name
, ".ovrflo", 8);
4000 scnhdr
.s_paddr
= current
->reloc_count
;
4001 scnhdr
.s_vaddr
= current
->lineno_count
;
4003 scnhdr
.s_scnptr
= 0;
4004 scnhdr
.s_relptr
= current
->rel_filepos
;
4005 scnhdr
.s_lnnoptr
= current
->line_filepos
;
4006 scnhdr
.s_nreloc
= current
->target_index
;
4007 scnhdr
.s_nlnno
= current
->target_index
;
4008 scnhdr
.s_flags
= STYP_OVRFLO
;
4009 amt
= bfd_coff_scnhsz (abfd
);
4010 if (coff_swap_scnhdr_out (abfd
, &scnhdr
, &buff
) == 0
4011 || bfd_bwrite (& buff
, amt
, abfd
) != amt
)
4018 /* OK, now set up the filehdr... */
4020 /* Don't include the internal abs section in the section count */
4022 /* We will NOT put a fucking timestamp in the header here. Every time you
4023 put it back, I will come in and take it out again. I'm sorry. This
4024 field does not belong here. We fill it with a 0 so it compares the
4025 same but is not a reasonable time. -- gnu@cygnus.com */
4026 internal_f
.f_timdat
= 0;
4027 internal_f
.f_flags
= 0;
4029 if (abfd
->flags
& EXEC_P
)
4030 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
4033 internal_f
.f_opthdr
= 0;
4036 if (xcoff_data (abfd
)->full_aouthdr
)
4037 internal_f
.f_opthdr
= bfd_coff_aoutsz (abfd
);
4039 internal_f
.f_opthdr
= SMALL_AOUTSZ
;
4045 internal_f
.f_flags
|= F_RELFLG
;
4047 internal_f
.f_flags
|= F_LNNO
;
4048 if (abfd
->flags
& EXEC_P
)
4049 internal_f
.f_flags
|= F_EXEC
;
4050 #ifdef COFF_IMAGE_WITH_PE
4052 internal_f
.f_flags
|= IMAGE_FILE_DEBUG_STRIPPED
;
4053 if (pe_data (abfd
)->real_flags
& IMAGE_FILE_LARGE_ADDRESS_AWARE
)
4054 internal_f
.f_flags
|= IMAGE_FILE_LARGE_ADDRESS_AWARE
;
4057 #ifndef COFF_WITH_pex64
4059 internal_f
.f_flags
|= IMAGE_FILE_32BIT_MACHINE
;
4061 if (bfd_little_endian (abfd
))
4062 internal_f
.f_flags
|= F_AR32WR
;
4064 internal_f
.f_flags
|= F_AR32W
;
4069 /* Target id is used in TI COFF v1 and later; COFF0 won't use this field,
4070 but it doesn't hurt to set it internally. */
4071 internal_f
.f_target_id
= TI_TARGET_ID
;
4073 #ifdef TIC80_TARGET_ID
4074 internal_f
.f_target_id
= TIC80_TARGET_ID
;
4077 /* FIXME, should do something about the other byte orders and
4081 if ((abfd
->flags
& DYNAMIC
) != 0)
4082 internal_f
.f_flags
|= F_SHROBJ
;
4083 if (bfd_get_section_by_name (abfd
, _LOADER
) != NULL
)
4084 internal_f
.f_flags
|= F_DYNLOAD
;
4087 memset (&internal_a
, 0, sizeof internal_a
);
4089 /* Set up architecture-dependent stuff. */
4091 unsigned int magic
= 0;
4092 unsigned short flags
= 0;
4094 coff_set_flags (abfd
, &magic
, &flags
);
4095 internal_f
.f_magic
= magic
;
4096 internal_f
.f_flags
|= flags
;
4097 /* ...and the "opt"hdr... */
4099 #ifdef TICOFF_AOUT_MAGIC
4100 internal_a
.magic
= TICOFF_AOUT_MAGIC
;
4101 #define __A_MAGIC_SET__
4104 internal_a
.magic
= TIC80_ARCH_MAGIC
;
4105 #define __A_MAGIC_SET__
4108 /* FIXME: What are the a.out magic numbers for the i860? */
4109 internal_a
.magic
= 0;
4110 #define __A_MAGIC_SET__
4113 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
4114 #define __A_MAGIC_SET__
4117 #define __A_MAGIC_SET__
4118 internal_a
.magic
= PAGEMAGICBCS
;
4122 #define __A_MAGIC_SET__
4123 internal_a
.magic
= APOLLO_COFF_VERSION_NUMBER
;
4126 #if defined(M68) || defined(WE32K) || defined(M68K)
4127 #define __A_MAGIC_SET__
4129 internal_a
.magic
= LYNXCOFFMAGIC
;
4131 #if defined(TARG_AUX)
4132 internal_a
.magic
= (abfd
->flags
& D_PAGED
? PAGEMAGICPEXECPAGED
:
4133 abfd
->flags
& WP_TEXT
? PAGEMAGICPEXECSWAPPED
:
4134 PAGEMAGICEXECSWAPPED
);
4136 #if defined (PAGEMAGICPEXECPAGED)
4137 internal_a
.magic
= PAGEMAGICPEXECPAGED
;
4139 #endif /* TARG_AUX */
4141 #endif /* M68 || WE32K || M68K */
4144 #define __A_MAGIC_SET__
4145 internal_a
.magic
= ZMAGIC
;
4149 #define __A_MAGIC_SET__
4150 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
4153 #if defined MCORE_PE
4154 #define __A_MAGIC_SET__
4155 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
4159 #define __A_MAGIC_SET__
4161 internal_a
.magic
= LYNXCOFFMAGIC
;
4163 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR64_MAGIC
;
4165 internal_a
.magic
= ZMAGIC
;
4170 #define __A_MAGIC_SET__
4171 internal_a
.magic
= PE32PMAGIC
;
4175 #define __A_MAGIC_SET__
4177 internal_a
.magic
= LYNXCOFFMAGIC
;
4182 #define __A_MAGIC_SET__
4183 internal_a
.magic
= (abfd
->flags
& D_PAGED
) ? RS6K_AOUTHDR_ZMAGIC
:
4184 (abfd
->flags
& WP_TEXT
) ? RS6K_AOUTHDR_NMAGIC
:
4185 RS6K_AOUTHDR_OMAGIC
;
4188 #if defined(SH) && defined(COFF_WITH_PE)
4189 #define __A_MAGIC_SET__
4190 internal_a
.magic
= SH_PE_MAGIC
;
4193 #if defined(MIPS) && defined(COFF_WITH_PE)
4194 #define __A_MAGIC_SET__
4195 internal_a
.magic
= MIPS_PE_MAGIC
;
4198 #ifndef __A_MAGIC_SET__
4199 #include "Your aouthdr magic number is not being set!"
4201 #undef __A_MAGIC_SET__
4205 /* FIXME: Does anybody ever set this to another value? */
4206 internal_a
.vstamp
= 0;
4208 /* Now should write relocs, strings, syms. */
4209 obj_sym_filepos (abfd
) = sym_base
;
4211 if (bfd_get_symcount (abfd
) != 0)
4215 if (!coff_renumber_symbols (abfd
, &firstundef
))
4217 coff_mangle_symbols (abfd
);
4218 if (! coff_write_symbols (abfd
))
4220 if (! coff_write_linenumbers (abfd
))
4222 if (! coff_write_relocs (abfd
, firstundef
))
4225 #ifdef COFF_LONG_SECTION_NAMES
4226 else if (long_section_names
&& ! obj_coff_strings_written (abfd
))
4228 /* If we have long section names we have to write out the string
4229 table even if there are no symbols. */
4230 if (! coff_write_symbols (abfd
))
4234 #ifdef COFF_IMAGE_WITH_PE
4236 else if ((abfd
->flags
& EXEC_P
) != 0)
4240 /* PowerPC PE appears to require that all executable files be
4241 rounded up to the page size. */
4244 (file_ptr
) BFD_ALIGN (sym_base
, COFF_PAGE_SIZE
) - 1,
4246 || bfd_bwrite (&b
, (bfd_size_type
) 1, abfd
) != 1)
4252 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
4253 backend linker, and obj_raw_syment_count is not valid until after
4254 coff_write_symbols is called. */
4255 if (obj_raw_syment_count (abfd
) != 0)
4257 internal_f
.f_symptr
= sym_base
;
4259 /* AIX appears to require that F_RELFLG not be set if there are
4260 local symbols but no relocations. */
4261 internal_f
.f_flags
&=~ F_RELFLG
;
4266 if (long_section_names
)
4267 internal_f
.f_symptr
= sym_base
;
4269 internal_f
.f_symptr
= 0;
4270 internal_f
.f_flags
|= F_LSYMS
;
4275 internal_a
.tsize
= text_sec
->size
;
4276 internal_a
.text_start
= internal_a
.tsize
? text_sec
->vma
: 0;
4280 internal_a
.dsize
= data_sec
->size
;
4281 internal_a
.data_start
= internal_a
.dsize
? data_sec
->vma
: 0;
4285 internal_a
.bsize
= bss_sec
->size
;
4286 if (internal_a
.bsize
&& bss_sec
->vma
< internal_a
.data_start
)
4287 internal_a
.data_start
= bss_sec
->vma
;
4290 internal_a
.entry
= bfd_get_start_address (abfd
);
4291 internal_f
.f_nsyms
= obj_raw_syment_count (abfd
);
4294 if (xcoff_data (abfd
)->full_aouthdr
)
4297 asection
*loader_sec
;
4299 internal_a
.vstamp
= 1;
4301 internal_a
.o_snentry
= xcoff_data (abfd
)->snentry
;
4302 if (internal_a
.o_snentry
== 0)
4303 internal_a
.entry
= (bfd_vma
) -1;
4305 if (text_sec
!= NULL
)
4307 internal_a
.o_sntext
= text_sec
->target_index
;
4308 internal_a
.o_algntext
= bfd_get_section_alignment (abfd
, text_sec
);
4312 internal_a
.o_sntext
= 0;
4313 internal_a
.o_algntext
= 0;
4315 if (data_sec
!= NULL
)
4317 internal_a
.o_sndata
= data_sec
->target_index
;
4318 internal_a
.o_algndata
= bfd_get_section_alignment (abfd
, data_sec
);
4322 internal_a
.o_sndata
= 0;
4323 internal_a
.o_algndata
= 0;
4325 loader_sec
= bfd_get_section_by_name (abfd
, ".loader");
4326 if (loader_sec
!= NULL
)
4327 internal_a
.o_snloader
= loader_sec
->target_index
;
4329 internal_a
.o_snloader
= 0;
4330 if (bss_sec
!= NULL
)
4331 internal_a
.o_snbss
= bss_sec
->target_index
;
4333 internal_a
.o_snbss
= 0;
4335 toc
= xcoff_data (abfd
)->toc
;
4336 internal_a
.o_toc
= toc
;
4337 internal_a
.o_sntoc
= xcoff_data (abfd
)->sntoc
;
4339 internal_a
.o_modtype
= xcoff_data (abfd
)->modtype
;
4340 if (xcoff_data (abfd
)->cputype
!= -1)
4341 internal_a
.o_cputype
= xcoff_data (abfd
)->cputype
;
4344 switch (bfd_get_arch (abfd
))
4346 case bfd_arch_rs6000
:
4347 internal_a
.o_cputype
= 4;
4349 case bfd_arch_powerpc
:
4350 if (bfd_get_mach (abfd
) == bfd_mach_ppc
)
4351 internal_a
.o_cputype
= 3;
4353 internal_a
.o_cputype
= 1;
4359 internal_a
.o_maxstack
= xcoff_data (abfd
)->maxstack
;
4360 internal_a
.o_maxdata
= xcoff_data (abfd
)->maxdata
;
4366 /* After object contents are finalized so we can compute a reasonable hash,
4367 but before header is written so we can update it to point to debug directory. */
4368 struct pe_tdata
*pe
= pe_data (abfd
);
4370 if (pe
->build_id
.after_write_object_contents
!= NULL
)
4371 (*pe
->build_id
.after_write_object_contents
) (abfd
);
4375 /* Now write header. */
4376 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
4381 bfd_size_type amount
= bfd_coff_filhsz (abfd
);
4383 buff
= (char *) bfd_malloc (amount
);
4387 bfd_coff_swap_filehdr_out (abfd
, & internal_f
, buff
);
4388 amount
= bfd_bwrite (buff
, amount
, abfd
);
4392 if (amount
!= bfd_coff_filhsz (abfd
))
4396 if (abfd
->flags
& EXEC_P
)
4398 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
4399 include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)). */
4401 bfd_size_type amount
= bfd_coff_aoutsz (abfd
);
4403 buff
= (char *) bfd_malloc (amount
);
4407 coff_swap_aouthdr_out (abfd
, & internal_a
, buff
);
4408 amount
= bfd_bwrite (buff
, amount
, abfd
);
4412 if (amount
!= bfd_coff_aoutsz (abfd
))
4415 #ifdef COFF_IMAGE_WITH_PE
4416 if (! coff_apply_checksum (abfd
))
4426 /* XCOFF seems to always write at least a small a.out header. */
4427 coff_swap_aouthdr_out (abfd
, & internal_a
, & buff
);
4428 if (xcoff_data (abfd
)->full_aouthdr
)
4429 size
= bfd_coff_aoutsz (abfd
);
4431 size
= SMALL_AOUTSZ
;
4432 if (bfd_bwrite (& buff
, (bfd_size_type
) size
, abfd
) != size
)
4441 coff_set_section_contents (bfd
* abfd
,
4443 const void * location
,
4445 bfd_size_type count
)
4447 if (! abfd
->output_has_begun
) /* Set by bfd.c handler. */
4449 if (! coff_compute_section_file_positions (abfd
))
4453 #if defined(_LIB) && !defined(TARG_AUX)
4454 /* The physical address field of a .lib section is used to hold the
4455 number of shared libraries in the section. This code counts the
4456 number of sections being written, and increments the lma field
4459 I have found no documentation on the contents of this section.
4460 Experimentation indicates that the section contains zero or more
4461 records, each of which has the following structure:
4463 - a (four byte) word holding the length of this record, in words,
4464 - a word that always seems to be set to "2",
4465 - the path to a shared library, null-terminated and then padded
4466 to a whole word boundary.
4468 bfd_assert calls have been added to alert if an attempt is made
4469 to write a section which doesn't follow these assumptions. The
4470 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4471 <robertl@arnet.com> (Thanks!).
4473 Gvran Uddeborg <gvran@uddeborg.pp.se>. */
4474 if (strcmp (section
->name
, _LIB
) == 0)
4476 bfd_byte
*rec
, *recend
;
4478 rec
= (bfd_byte
*) location
;
4479 recend
= rec
+ count
;
4480 while (rec
< recend
)
4483 rec
+= bfd_get_32 (abfd
, rec
) * 4;
4486 BFD_ASSERT (rec
== recend
);
4490 /* Don't write out bss sections - one way to do this is to
4491 see if the filepos has not been set. */
4492 if (section
->filepos
== 0)
4495 if (bfd_seek (abfd
, section
->filepos
+ offset
, SEEK_SET
) != 0)
4501 return bfd_bwrite (location
, count
, abfd
) == count
;
4505 buy_and_read (bfd
*abfd
, file_ptr where
, bfd_size_type size
)
4507 void * area
= bfd_alloc (abfd
, size
);
4511 if (bfd_seek (abfd
, where
, SEEK_SET
) != 0
4512 || bfd_bread (area
, size
, abfd
) != size
)
4521 Creating the linenumber table is done by reading in the entire
4522 coff linenumber table, and creating another table for internal use.
4524 A coff linenumber table is structured so that each function
4525 is marked as having a line number of 0. Each line within the
4526 function is an offset from the first line in the function. The
4527 base of the line number information for the table is stored in
4528 the symbol associated with the function.
4530 Note: The PE format uses line number 0 for a flag indicating a
4533 The information is copied from the external to the internal
4534 table, and each symbol which marks a function is marked by
4537 How does this work ?
4541 coff_sort_func_alent (const void * arg1
, const void * arg2
)
4543 const alent
*al1
= *(const alent
**) arg1
;
4544 const alent
*al2
= *(const alent
**) arg2
;
4545 const coff_symbol_type
*s1
= (const coff_symbol_type
*) (al1
->u
.sym
);
4546 const coff_symbol_type
*s2
= (const coff_symbol_type
*) (al2
->u
.sym
);
4548 if (s1
== NULL
|| s2
== NULL
)
4550 if (s1
->symbol
.value
< s2
->symbol
.value
)
4552 else if (s1
->symbol
.value
> s2
->symbol
.value
)
4559 coff_slurp_line_table (bfd
*abfd
, asection
*asect
)
4561 LINENO
*native_lineno
;
4562 alent
*lineno_cache
;
4564 unsigned int counter
;
4566 bfd_vma prev_offset
= 0;
4567 bfd_boolean ordered
= TRUE
;
4568 unsigned int nbr_func
;
4570 bfd_boolean have_func
;
4571 bfd_boolean ret
= TRUE
;
4573 BFD_ASSERT (asect
->lineno
== NULL
);
4575 amt
= ((bfd_size_type
) asect
->lineno_count
+ 1) * sizeof (alent
);
4576 lineno_cache
= (alent
*) bfd_alloc (abfd
, amt
);
4577 if (lineno_cache
== NULL
)
4580 amt
= (bfd_size_type
) bfd_coff_linesz (abfd
) * asect
->lineno_count
;
4581 native_lineno
= (LINENO
*) buy_and_read (abfd
, asect
->line_filepos
, amt
);
4582 if (native_lineno
== NULL
)
4585 (_("%B: warning: line number table read failed"), abfd
);
4586 bfd_release (abfd
, lineno_cache
);
4590 cache_ptr
= lineno_cache
;
4591 asect
->lineno
= lineno_cache
;
4592 src
= native_lineno
;
4596 for (counter
= 0; counter
< asect
->lineno_count
; counter
++, src
++)
4598 struct internal_lineno dst
;
4600 bfd_coff_swap_lineno_in (abfd
, src
, &dst
);
4601 cache_ptr
->line_number
= dst
.l_lnno
;
4602 /* Appease memory checkers that get all excited about
4603 uninitialised memory when copying alents if u.offset is
4604 larger than u.sym. (64-bit BFD on 32-bit host.) */
4605 memset (&cache_ptr
->u
, 0, sizeof (cache_ptr
->u
));
4607 if (cache_ptr
->line_number
== 0)
4609 combined_entry_type
* ent
;
4611 coff_symbol_type
*sym
;
4614 symndx
= dst
.l_addr
.l_symndx
;
4615 if (symndx
>= obj_raw_syment_count (abfd
))
4618 /* xgettext:c-format */
4619 (_("%B: warning: illegal symbol index 0x%lx in line number entry %d"),
4620 abfd
, (long) symndx
, counter
);
4621 cache_ptr
->line_number
= -1;
4626 ent
= obj_raw_syments (abfd
) + symndx
;
4627 /* FIXME: We should not be casting between ints and
4628 pointers like this. */
4632 /* xgettext:c-format */
4633 (_("%B: warning: illegal symbol index 0x%lx in line number entry %d"),
4634 abfd
, (long) symndx
, counter
);
4635 cache_ptr
->line_number
= -1;
4639 sym
= (coff_symbol_type
*) (ent
->u
.syment
._n
._n_n
._n_zeroes
);
4641 /* PR 17512 file: 078-10659-0.004 */
4642 if (sym
< obj_symbols (abfd
)
4643 || sym
>= obj_symbols (abfd
) + bfd_get_symcount (abfd
))
4646 /* xgettext:c-format */
4647 (_("%B: warning: illegal symbol in line number entry %d"),
4649 cache_ptr
->line_number
= -1;
4656 cache_ptr
->u
.sym
= (asymbol
*) sym
;
4657 if (sym
->lineno
!= NULL
)
4659 /* xgettext:c-format */
4660 (_("%B: warning: duplicate line number information for `%s'"),
4661 abfd
, bfd_asymbol_name (&sym
->symbol
));
4663 sym
->lineno
= cache_ptr
;
4664 if (sym
->symbol
.value
< prev_offset
)
4666 prev_offset
= sym
->symbol
.value
;
4668 else if (!have_func
)
4669 /* Drop line information that has no associated function.
4670 PR 17521: file: 078-10659-0.004. */
4673 cache_ptr
->u
.offset
= (dst
.l_addr
.l_paddr
4674 - bfd_section_vma (abfd
, asect
));
4678 asect
->lineno_count
= cache_ptr
- lineno_cache
;
4679 memset (cache_ptr
, 0, sizeof (*cache_ptr
));
4680 bfd_release (abfd
, native_lineno
);
4682 /* On some systems (eg AIX5.3) the lineno table may not be sorted. */
4685 /* Sort the table. */
4687 alent
*n_lineno_cache
;
4689 /* Create a table of functions. */
4690 func_table
= (alent
**) bfd_alloc (abfd
, nbr_func
* sizeof (alent
*));
4691 if (func_table
!= NULL
)
4693 alent
**p
= func_table
;
4696 for (i
= 0; i
< asect
->lineno_count
; i
++)
4697 if (lineno_cache
[i
].line_number
== 0)
4698 *p
++ = &lineno_cache
[i
];
4700 BFD_ASSERT ((unsigned int) (p
- func_table
) == nbr_func
);
4702 /* Sort by functions. */
4703 qsort (func_table
, nbr_func
, sizeof (alent
*), coff_sort_func_alent
);
4705 /* Create the new sorted table. */
4706 amt
= (bfd_size_type
) asect
->lineno_count
* sizeof (alent
);
4707 n_lineno_cache
= (alent
*) bfd_alloc (abfd
, amt
);
4708 if (n_lineno_cache
!= NULL
)
4710 alent
*n_cache_ptr
= n_lineno_cache
;
4712 for (i
= 0; i
< nbr_func
; i
++)
4714 coff_symbol_type
*sym
;
4715 alent
*old_ptr
= func_table
[i
];
4717 /* Update the function entry. */
4718 sym
= (coff_symbol_type
*) old_ptr
->u
.sym
;
4719 /* PR binutils/17512: Point the lineno to where
4720 this entry will be after the memcpy below. */
4721 sym
->lineno
= lineno_cache
+ (n_cache_ptr
- n_lineno_cache
);
4722 /* Copy the function and line number entries. */
4724 *n_cache_ptr
++ = *old_ptr
++;
4725 while (old_ptr
->line_number
!= 0);
4727 BFD_ASSERT ((bfd_size_type
) (n_cache_ptr
- n_lineno_cache
) == (amt
/ sizeof (alent
)));
4729 memcpy (lineno_cache
, n_lineno_cache
, amt
);
4733 bfd_release (abfd
, func_table
);
4742 /* Slurp in the symbol table, converting it to generic form. Note
4743 that if coff_relocate_section is defined, the linker will read
4744 symbols via coff_link_add_symbols, rather than via this routine. */
4747 coff_slurp_symbol_table (bfd
* abfd
)
4749 combined_entry_type
*native_symbols
;
4750 coff_symbol_type
*cached_area
;
4751 unsigned int *table_ptr
;
4753 unsigned int number_of_symbols
= 0;
4754 bfd_boolean ret
= TRUE
;
4756 if (obj_symbols (abfd
))
4759 /* Read in the symbol table. */
4760 if ((native_symbols
= coff_get_normalized_symtab (abfd
)) == NULL
)
4763 /* Allocate enough room for all the symbols in cached form. */
4764 amt
= obj_raw_syment_count (abfd
);
4765 amt
*= sizeof (coff_symbol_type
);
4766 cached_area
= (coff_symbol_type
*) bfd_alloc (abfd
, amt
);
4767 if (cached_area
== NULL
)
4770 amt
= obj_raw_syment_count (abfd
);
4771 amt
*= sizeof (unsigned int);
4772 table_ptr
= (unsigned int *) bfd_zalloc (abfd
, amt
);
4774 if (table_ptr
== NULL
)
4778 coff_symbol_type
*dst
= cached_area
;
4779 unsigned int last_native_index
= obj_raw_syment_count (abfd
);
4780 unsigned int this_index
= 0;
4782 while (this_index
< last_native_index
)
4784 combined_entry_type
*src
= native_symbols
+ this_index
;
4785 table_ptr
[this_index
] = number_of_symbols
;
4787 dst
->symbol
.the_bfd
= abfd
;
4788 BFD_ASSERT (src
->is_sym
);
4789 dst
->symbol
.name
= (char *) (src
->u
.syment
._n
._n_n
._n_offset
);
4790 /* We use the native name field to point to the cached field. */
4791 src
->u
.syment
._n
._n_n
._n_zeroes
= (bfd_hostptr_t
) dst
;
4792 dst
->symbol
.section
= coff_section_from_bfd_index (abfd
,
4793 src
->u
.syment
.n_scnum
);
4794 dst
->symbol
.flags
= 0;
4795 /* PR 17512: file: 079-7098-0.001:0.1. */
4796 dst
->symbol
.value
= 0;
4797 dst
->done_lineno
= FALSE
;
4799 switch (src
->u
.syment
.n_sclass
)
4803 /* Fall through to next case. */
4810 case C_THUMBEXTFUNC
:
4816 case C_SYSTEM
: /* System Wide variable. */
4819 /* In PE, 0x68 (104) denotes a section symbol. */
4821 /* In PE, 0x69 (105) denotes a weak external symbol. */
4824 switch (coff_classify_symbol (abfd
, &src
->u
.syment
))
4826 case COFF_SYMBOL_GLOBAL
:
4827 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
4828 #if defined COFF_WITH_PE
4829 /* PE sets the symbol to a value relative to the
4830 start of the section. */
4831 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4833 dst
->symbol
.value
= (src
->u
.syment
.n_value
4834 - dst
->symbol
.section
->vma
);
4836 if (ISFCN ((src
->u
.syment
.n_type
)))
4837 /* A function ext does not go at the end of a
4839 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4842 case COFF_SYMBOL_COMMON
:
4843 dst
->symbol
.section
= bfd_com_section_ptr
;
4844 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4847 case COFF_SYMBOL_UNDEFINED
:
4848 dst
->symbol
.section
= bfd_und_section_ptr
;
4849 dst
->symbol
.value
= 0;
4852 case COFF_SYMBOL_PE_SECTION
:
4853 dst
->symbol
.flags
|= BSF_EXPORT
| BSF_SECTION_SYM
;
4854 dst
->symbol
.value
= 0;
4857 case COFF_SYMBOL_LOCAL
:
4858 dst
->symbol
.flags
= BSF_LOCAL
;
4859 #if defined COFF_WITH_PE
4860 /* PE sets the symbol to a value relative to the
4861 start of the section. */
4862 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4864 dst
->symbol
.value
= (src
->u
.syment
.n_value
4865 - dst
->symbol
.section
->vma
);
4867 if (ISFCN ((src
->u
.syment
.n_type
)))
4868 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
4873 /* A symbol with a csect entry should not go at the end. */
4874 if (src
->u
.syment
.n_numaux
> 0)
4875 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
4879 if (src
->u
.syment
.n_sclass
== C_NT_WEAK
)
4880 dst
->symbol
.flags
|= BSF_WEAK
;
4882 if (src
->u
.syment
.n_sclass
== C_SECTION
4883 && src
->u
.syment
.n_scnum
> 0)
4884 dst
->symbol
.flags
= BSF_LOCAL
;
4886 if (src
->u
.syment
.n_sclass
== C_WEAKEXT
)
4887 dst
->symbol
.flags
|= BSF_WEAK
;
4891 case C_STAT
: /* Static. */
4893 case C_LEAFSTAT
: /* Static leaf procedure. */
4896 case C_THUMBSTAT
: /* Thumb static. */
4897 case C_THUMBLABEL
: /* Thumb label. */
4898 case C_THUMBSTATFUNC
:/* Thumb static function. */
4901 case C_DWARF
: /* A label in a dwarf section. */
4902 case C_INFO
: /* A label in a comment section. */
4904 case C_LABEL
: /* Label. */
4905 if (src
->u
.syment
.n_scnum
== N_DEBUG
)
4906 dst
->symbol
.flags
= BSF_DEBUGGING
;
4908 dst
->symbol
.flags
= BSF_LOCAL
;
4910 /* Base the value as an index from the base of the
4911 section, if there is one. */
4912 if (dst
->symbol
.section
)
4914 #if defined COFF_WITH_PE
4915 /* PE sets the symbol to a value relative to the
4916 start of the section. */
4917 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4919 dst
->symbol
.value
= (src
->u
.syment
.n_value
4920 - dst
->symbol
.section
->vma
);
4924 dst
->symbol
.value
= src
->u
.syment
.n_value
;
4927 case C_MOS
: /* Member of structure. */
4928 case C_EOS
: /* End of structure. */
4929 case C_REGPARM
: /* Register parameter. */
4930 case C_REG
: /* register variable. */
4931 /* C_AUTOARG conflicts with TI COFF C_UEXT. */
4932 #if !defined (TIC80COFF) && !defined (TICOFF)
4934 case C_AUTOARG
: /* 960-specific storage class. */
4937 case C_TPDEF
: /* Type definition. */
4939 case C_AUTO
: /* Automatic variable. */
4940 case C_FIELD
: /* Bit field. */
4941 case C_ENTAG
: /* Enumeration tag. */
4942 case C_MOE
: /* Member of enumeration. */
4943 case C_MOU
: /* Member of union. */
4944 case C_UNTAG
: /* Union tag. */
4945 dst
->symbol
.flags
= BSF_DEBUGGING
;
4946 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4949 case C_FILE
: /* File name. */
4950 case C_STRTAG
: /* Structure tag. */
4967 dst
->symbol
.flags
= BSF_DEBUGGING
;
4968 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
4972 case C_BINCL
: /* Beginning of include file. */
4973 case C_EINCL
: /* Ending of include file. */
4974 /* The value is actually a pointer into the line numbers
4975 of the file. We locate the line number entry, and
4976 set the section to the section which contains it, and
4977 the value to the index in that section. */
4981 dst
->symbol
.flags
= BSF_DEBUGGING
;
4982 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4983 if (sec
->line_filepos
<= (file_ptr
) src
->u
.syment
.n_value
4984 && ((file_ptr
) (sec
->line_filepos
4985 + sec
->lineno_count
* bfd_coff_linesz (abfd
))
4986 > (file_ptr
) src
->u
.syment
.n_value
))
4989 dst
->symbol
.value
= 0;
4992 dst
->symbol
.section
= sec
;
4993 dst
->symbol
.value
= ((src
->u
.syment
.n_value
4994 - sec
->line_filepos
)
4995 / bfd_coff_linesz (abfd
));
5002 dst
->symbol
.flags
= BSF_DEBUGGING
;
5004 /* The value is actually a symbol index. Save a pointer
5005 to the symbol instead of the index. FIXME: This
5006 should use a union. */
5007 src
->u
.syment
.n_value
=
5008 (long) (intptr_t) (native_symbols
+ src
->u
.syment
.n_value
);
5009 dst
->symbol
.value
= src
->u
.syment
.n_value
;
5014 case C_BLOCK
: /* ".bb" or ".eb". */
5015 case C_FCN
: /* ".bf" or ".ef" (or PE ".lf"). */
5016 case C_EFCN
: /* Physical end of function. */
5017 #if defined COFF_WITH_PE
5018 /* PE sets the symbol to a value relative to the start
5020 dst
->symbol
.value
= src
->u
.syment
.n_value
;
5021 if (strcmp (dst
->symbol
.name
, ".bf") != 0)
5023 /* PE uses funny values for .ef and .lf; don't
5025 dst
->symbol
.flags
= BSF_DEBUGGING
;
5028 dst
->symbol
.flags
= BSF_DEBUGGING
| BSF_DEBUGGING_RELOC
;
5030 /* Base the value as an index from the base of the
5032 dst
->symbol
.flags
= BSF_LOCAL
;
5033 dst
->symbol
.value
= (src
->u
.syment
.n_value
5034 - dst
->symbol
.section
->vma
);
5038 case C_STATLAB
: /* Static load time label. */
5039 dst
->symbol
.value
= src
->u
.syment
.n_value
;
5040 dst
->symbol
.flags
= BSF_GLOBAL
;
5044 /* PE DLLs sometimes have zeroed out symbols for some
5045 reason. Just ignore them without a warning. */
5046 if (src
->u
.syment
.n_type
== 0
5047 && src
->u
.syment
.n_value
== 0
5048 && src
->u
.syment
.n_scnum
== 0)
5051 /* XCOFF specific: deleted entry. */
5052 if (src
->u
.syment
.n_value
== C_NULL_VALUE
)
5056 case C_EXTDEF
: /* External definition. */
5057 case C_ULABEL
: /* Undefined label. */
5058 case C_USTATIC
: /* Undefined static. */
5059 #ifndef COFF_WITH_PE
5060 /* C_LINE in regular coff is 0x68. NT has taken over this storage
5061 class to represent a section symbol. */
5062 case C_LINE
: /* line # reformatted as symbol table entry. */
5063 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
5064 case C_ALIAS
: /* Duplicate tag. */
5066 /* New storage classes for TI COFF. */
5067 #if defined(TIC80COFF) || defined(TICOFF)
5068 case C_UEXT
: /* Tentative external definition. */
5070 case C_EXTLAB
: /* External load time label. */
5073 /* xgettext:c-format */
5074 (_("%B: Unrecognized storage class %d for %s symbol `%s'"),
5075 abfd
, src
->u
.syment
.n_sclass
,
5076 dst
->symbol
.section
->name
, dst
->symbol
.name
);
5079 case C_HIDDEN
: /* Ext symbol in dmert public lib. */
5080 /* PR 20722: These symbols can also be generated by
5081 building DLLs with --gc-sections enabled. */
5082 dst
->symbol
.flags
= BSF_DEBUGGING
;
5083 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
5088 dst
->symbol
.udata
.i
= 0;
5091 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
5093 number_of_symbols
++;
5097 obj_symbols (abfd
) = cached_area
;
5098 obj_raw_syments (abfd
) = native_symbols
;
5100 bfd_get_symcount (abfd
) = number_of_symbols
;
5101 obj_convert (abfd
) = table_ptr
;
5102 /* Slurp the line tables for each section too. */
5109 if (! coff_slurp_line_table (abfd
, p
))
5118 /* Classify a COFF symbol. A couple of targets have globally visible
5119 symbols which are not class C_EXT, and this handles those. It also
5120 recognizes some special PE cases. */
5122 static enum coff_symbol_classification
5123 coff_classify_symbol (bfd
*abfd
,
5124 struct internal_syment
*syment
)
5126 /* FIXME: This partially duplicates the switch in
5127 coff_slurp_symbol_table. */
5128 switch (syment
->n_sclass
)
5137 case C_THUMBEXTFUNC
:
5145 if (syment
->n_scnum
== 0)
5147 if (syment
->n_value
== 0)
5148 return COFF_SYMBOL_UNDEFINED
;
5150 return COFF_SYMBOL_COMMON
;
5152 return COFF_SYMBOL_GLOBAL
;
5159 if (syment
->n_sclass
== C_STAT
)
5161 if (syment
->n_scnum
== 0)
5162 /* The Microsoft compiler sometimes generates these if a
5163 small static function is inlined every time it is used.
5164 The function is discarded, but the symbol table entry
5166 return COFF_SYMBOL_LOCAL
;
5168 #ifdef STRICT_PE_FORMAT
5169 /* This is correct for Microsoft generated objects, but it
5170 breaks gas generated objects. */
5171 if (syment
->n_value
== 0)
5175 char buf
[SYMNMLEN
+ 1];
5177 name
= _bfd_coff_internal_syment_name (abfd
, syment
, buf
)
5178 sec
= coff_section_from_bfd_index (abfd
, syment
->n_scnum
);
5179 if (sec
!= NULL
&& name
!= NULL
5180 && (strcmp (bfd_get_section_name (abfd
, sec
), name
) == 0))
5181 return COFF_SYMBOL_PE_SECTION
;
5185 return COFF_SYMBOL_LOCAL
;
5188 if (syment
->n_sclass
== C_SECTION
)
5190 /* In some cases in a DLL generated by the Microsoft linker, the
5191 n_value field will contain garbage. FIXME: This should
5192 probably be handled by the swapping function instead. */
5193 syment
->n_value
= 0;
5194 if (syment
->n_scnum
== 0)
5195 return COFF_SYMBOL_UNDEFINED
;
5196 return COFF_SYMBOL_PE_SECTION
;
5198 #endif /* COFF_WITH_PE */
5200 /* If it is not a global symbol, we presume it is a local symbol. */
5201 if (syment
->n_scnum
== 0)
5203 char buf
[SYMNMLEN
+ 1];
5206 /* xgettext:c-format */
5207 (_("warning: %B: local symbol `%s' has no section"),
5208 abfd
, _bfd_coff_internal_syment_name (abfd
, syment
, buf
));
5211 return COFF_SYMBOL_LOCAL
;
5218 Coff relocations are easily transformed into the internal BFD form
5221 Reading a coff relocation table is done in the following stages:
5223 o Read the entire coff relocation table into memory.
5225 o Process each relocation in turn; first swap it from the
5226 external to the internal form.
5228 o Turn the symbol referenced in the relocation's symbol index
5229 into a pointer into the canonical symbol table.
5230 This table is the same as the one returned by a call to
5231 @code{bfd_canonicalize_symtab}. The back end will call that
5232 routine and save the result if a canonicalization hasn't been done.
5234 o The reloc index is turned into a pointer to a howto
5235 structure, in a back end specific way. For instance, the 386
5236 and 960 use the @code{r_type} to directly produce an index
5237 into a howto table vector; the 88k subtracts a number from the
5238 @code{r_type} field and creates an addend field.
5242 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
5244 coff_symbol_type *coffsym = NULL; \
5246 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
5247 coffsym = (obj_symbols (abfd) \
5248 + (cache_ptr->sym_ptr_ptr - symbols)); \
5250 coffsym = coff_symbol_from (ptr); \
5251 if (coffsym != NULL \
5252 && coffsym->native->is_sym \
5253 && coffsym->native->u.syment.n_scnum == 0) \
5254 cache_ptr->addend = 0; \
5255 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
5256 && ptr->section != NULL) \
5257 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
5259 cache_ptr->addend = 0; \
5264 coff_slurp_reloc_table (bfd
* abfd
, sec_ptr asect
, asymbol
** symbols
)
5266 RELOC
*native_relocs
;
5267 arelent
*reloc_cache
;
5272 if (asect
->relocation
)
5274 if (asect
->reloc_count
== 0)
5276 if (asect
->flags
& SEC_CONSTRUCTOR
)
5278 if (!coff_slurp_symbol_table (abfd
))
5281 amt
= (bfd_size_type
) bfd_coff_relsz (abfd
) * asect
->reloc_count
;
5282 native_relocs
= (RELOC
*) buy_and_read (abfd
, asect
->rel_filepos
, amt
);
5283 amt
= (bfd_size_type
) asect
->reloc_count
* sizeof (arelent
);
5284 reloc_cache
= (arelent
*) bfd_alloc (abfd
, amt
);
5286 if (reloc_cache
== NULL
|| native_relocs
== NULL
)
5289 for (idx
= 0; idx
< asect
->reloc_count
; idx
++)
5291 struct internal_reloc dst
;
5292 struct external_reloc
*src
;
5293 #ifndef RELOC_PROCESSING
5297 cache_ptr
= reloc_cache
+ idx
;
5298 src
= native_relocs
+ idx
;
5301 coff_swap_reloc_in (abfd
, src
, &dst
);
5303 #ifdef RELOC_PROCESSING
5304 RELOC_PROCESSING (cache_ptr
, &dst
, symbols
, abfd
, asect
);
5306 cache_ptr
->address
= dst
.r_vaddr
;
5308 if (dst
.r_symndx
!= -1)
5310 if (dst
.r_symndx
< 0 || dst
.r_symndx
>= obj_conv_table_size (abfd
))
5313 /* xgettext:c-format */
5314 (_("%B: warning: illegal symbol index %ld in relocs"),
5315 abfd
, (long) dst
.r_symndx
);
5316 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
5321 cache_ptr
->sym_ptr_ptr
= (symbols
5322 + obj_convert (abfd
)[dst
.r_symndx
]);
5323 ptr
= *(cache_ptr
->sym_ptr_ptr
);
5328 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
5332 /* The symbols definitions that we have read in have been
5333 relocated as if their sections started at 0. But the offsets
5334 refering to the symbols in the raw data have not been
5335 modified, so we have to have a negative addend to compensate.
5337 Note that symbols which used to be common must be left alone. */
5339 /* Calculate any reloc addend by looking at the symbol. */
5340 CALC_ADDEND (abfd
, ptr
, dst
, cache_ptr
);
5343 cache_ptr
->address
-= asect
->vma
;
5344 /* !! cache_ptr->section = NULL;*/
5346 /* Fill in the cache_ptr->howto field from dst.r_type. */
5347 RTYPE2HOWTO (cache_ptr
, &dst
);
5348 #endif /* RELOC_PROCESSING */
5350 if (cache_ptr
->howto
== NULL
)
5353 /* xgettext:c-format */
5354 (_("%B: illegal relocation type %d at address 0x%lx"),
5355 abfd
, dst
.r_type
, (long) dst
.r_vaddr
);
5356 bfd_set_error (bfd_error_bad_value
);
5361 asect
->relocation
= reloc_cache
;
5365 #ifndef coff_rtype_to_howto
5368 /* Get the howto structure for a reloc. This is only used if the file
5369 including this one defines coff_relocate_section to be
5370 _bfd_coff_generic_relocate_section, so it is OK if it does not
5371 always work. It is the responsibility of the including file to
5372 make sure it is reasonable if it is needed. */
5374 static reloc_howto_type
*
5375 coff_rtype_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
5376 asection
*sec ATTRIBUTE_UNUSED
,
5377 struct internal_reloc
*rel ATTRIBUTE_UNUSED
,
5378 struct coff_link_hash_entry
*h ATTRIBUTE_UNUSED
,
5379 struct internal_syment
*sym ATTRIBUTE_UNUSED
,
5380 bfd_vma
*addendp ATTRIBUTE_UNUSED
)
5384 genrel
.howto
= NULL
;
5385 RTYPE2HOWTO (&genrel
, rel
);
5386 return genrel
.howto
;
5389 #else /* ! defined (RTYPE2HOWTO) */
5391 #define coff_rtype_to_howto NULL
5393 #endif /* ! defined (RTYPE2HOWTO) */
5394 #endif /* ! defined (coff_rtype_to_howto) */
5396 /* This is stupid. This function should be a boolean predicate. */
5399 coff_canonicalize_reloc (bfd
* abfd
,
5404 arelent
*tblptr
= section
->relocation
;
5405 unsigned int count
= 0;
5407 if (section
->flags
& SEC_CONSTRUCTOR
)
5409 /* This section has relocs made up by us, they are not in the
5410 file, so take them out of their chain and place them into
5411 the data area provided. */
5412 arelent_chain
*chain
= section
->constructor_chain
;
5414 for (count
= 0; count
< section
->reloc_count
; count
++)
5416 *relptr
++ = &chain
->relent
;
5417 chain
= chain
->next
;
5422 if (! coff_slurp_reloc_table (abfd
, section
, symbols
))
5425 tblptr
= section
->relocation
;
5427 for (; count
++ < section
->reloc_count
;)
5428 *relptr
++ = tblptr
++;
5431 return section
->reloc_count
;
5434 #ifndef coff_set_reloc
5435 #define coff_set_reloc _bfd_generic_set_reloc
5438 #ifndef coff_reloc16_estimate
5439 #define coff_reloc16_estimate dummy_reloc16_estimate
5442 dummy_reloc16_estimate (bfd
*abfd ATTRIBUTE_UNUSED
,
5443 asection
*input_section ATTRIBUTE_UNUSED
,
5444 arelent
*reloc ATTRIBUTE_UNUSED
,
5445 unsigned int shrink ATTRIBUTE_UNUSED
,
5446 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
)
5454 #ifndef coff_reloc16_extra_cases
5456 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
5458 /* This works even if abort is not declared in any header file. */
5461 dummy_reloc16_extra_cases (bfd
*abfd ATTRIBUTE_UNUSED
,
5462 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
5463 struct bfd_link_order
*link_order ATTRIBUTE_UNUSED
,
5464 arelent
*reloc ATTRIBUTE_UNUSED
,
5465 bfd_byte
*data ATTRIBUTE_UNUSED
,
5466 unsigned int *src_ptr ATTRIBUTE_UNUSED
,
5467 unsigned int *dst_ptr ATTRIBUTE_UNUSED
)
5473 /* If coff_relocate_section is defined, we can use the optimized COFF
5474 backend linker. Otherwise we must continue to use the old linker. */
5476 #ifdef coff_relocate_section
5478 #ifndef coff_bfd_link_hash_table_create
5479 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
5481 #ifndef coff_bfd_link_add_symbols
5482 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
5484 #ifndef coff_bfd_final_link
5485 #define coff_bfd_final_link _bfd_coff_final_link
5488 #else /* ! defined (coff_relocate_section) */
5490 #define coff_relocate_section NULL
5491 #ifndef coff_bfd_link_hash_table_create
5492 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
5494 #ifndef coff_bfd_link_add_symbols
5495 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
5497 #define coff_bfd_final_link _bfd_generic_final_link
5499 #endif /* ! defined (coff_relocate_section) */
5501 #define coff_bfd_link_just_syms _bfd_generic_link_just_syms
5502 #define coff_bfd_copy_link_hash_symbol_type \
5503 _bfd_generic_copy_link_hash_symbol_type
5504 #define coff_bfd_link_split_section _bfd_generic_link_split_section
5506 #define coff_bfd_link_check_relocs _bfd_generic_link_check_relocs
5508 #ifndef coff_start_final_link
5509 #define coff_start_final_link NULL
5512 #ifndef coff_adjust_symndx
5513 #define coff_adjust_symndx NULL
5516 #ifndef coff_link_add_one_symbol
5517 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5520 #ifndef coff_link_output_has_begun
5523 coff_link_output_has_begun (bfd
* abfd
,
5524 struct coff_final_link_info
* info ATTRIBUTE_UNUSED
)
5526 return abfd
->output_has_begun
;
5530 #ifndef coff_final_link_postscript
5533 coff_final_link_postscript (bfd
* abfd ATTRIBUTE_UNUSED
,
5534 struct coff_final_link_info
* pfinfo ATTRIBUTE_UNUSED
)
5540 #ifndef coff_SWAP_aux_in
5541 #define coff_SWAP_aux_in coff_swap_aux_in
5543 #ifndef coff_SWAP_sym_in
5544 #define coff_SWAP_sym_in coff_swap_sym_in
5546 #ifndef coff_SWAP_lineno_in
5547 #define coff_SWAP_lineno_in coff_swap_lineno_in
5549 #ifndef coff_SWAP_aux_out
5550 #define coff_SWAP_aux_out coff_swap_aux_out
5552 #ifndef coff_SWAP_sym_out
5553 #define coff_SWAP_sym_out coff_swap_sym_out
5555 #ifndef coff_SWAP_lineno_out
5556 #define coff_SWAP_lineno_out coff_swap_lineno_out
5558 #ifndef coff_SWAP_reloc_out
5559 #define coff_SWAP_reloc_out coff_swap_reloc_out
5561 #ifndef coff_SWAP_filehdr_out
5562 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5564 #ifndef coff_SWAP_aouthdr_out
5565 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5567 #ifndef coff_SWAP_scnhdr_out
5568 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5570 #ifndef coff_SWAP_reloc_in
5571 #define coff_SWAP_reloc_in coff_swap_reloc_in
5573 #ifndef coff_SWAP_filehdr_in
5574 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5576 #ifndef coff_SWAP_aouthdr_in
5577 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5579 #ifndef coff_SWAP_scnhdr_in
5580 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5583 static bfd_coff_backend_data bfd_coff_std_swap_table ATTRIBUTE_UNUSED
=
5585 coff_SWAP_aux_in
, coff_SWAP_sym_in
, coff_SWAP_lineno_in
,
5586 coff_SWAP_aux_out
, coff_SWAP_sym_out
,
5587 coff_SWAP_lineno_out
, coff_SWAP_reloc_out
,
5588 coff_SWAP_filehdr_out
, coff_SWAP_aouthdr_out
,
5589 coff_SWAP_scnhdr_out
,
5590 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
, FILNMLEN
,
5591 #ifdef COFF_LONG_FILENAMES
5596 COFF_DEFAULT_LONG_SECTION_NAMES
,
5597 COFF_DEFAULT_SECTION_ALIGNMENT_POWER
,
5598 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5603 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5609 coff_SWAP_filehdr_in
, coff_SWAP_aouthdr_in
, coff_SWAP_scnhdr_in
,
5610 coff_SWAP_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
5611 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
5612 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
5613 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
5614 coff_classify_symbol
, coff_compute_section_file_positions
,
5615 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
5616 coff_adjust_symndx
, coff_link_add_one_symbol
,
5617 coff_link_output_has_begun
, coff_final_link_postscript
,
5622 /* COFF0 differs in file/section header size and relocation entry size. */
5624 static bfd_coff_backend_data ticoff0_swap_table
=
5626 coff_SWAP_aux_in
, coff_SWAP_sym_in
, coff_SWAP_lineno_in
,
5627 coff_SWAP_aux_out
, coff_SWAP_sym_out
,
5628 coff_SWAP_lineno_out
, coff_SWAP_reloc_out
,
5629 coff_SWAP_filehdr_out
, coff_SWAP_aouthdr_out
,
5630 coff_SWAP_scnhdr_out
,
5631 FILHSZ_V0
, AOUTSZ
, SCNHSZ_V01
, SYMESZ
, AUXESZ
, RELSZ_V0
, LINESZ
, FILNMLEN
,
5632 #ifdef COFF_LONG_FILENAMES
5637 COFF_DEFAULT_LONG_SECTION_NAMES
,
5638 COFF_DEFAULT_SECTION_ALIGNMENT_POWER
,
5639 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5644 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5650 coff_SWAP_filehdr_in
, coff_SWAP_aouthdr_in
, coff_SWAP_scnhdr_in
,
5651 coff_SWAP_reloc_in
, ticoff0_bad_format_hook
, coff_set_arch_mach_hook
,
5652 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
5653 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
5654 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
5655 coff_classify_symbol
, coff_compute_section_file_positions
,
5656 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
5657 coff_adjust_symndx
, coff_link_add_one_symbol
,
5658 coff_link_output_has_begun
, coff_final_link_postscript
,
5664 /* COFF1 differs in section header size. */
5666 static bfd_coff_backend_data ticoff1_swap_table
=
5668 coff_SWAP_aux_in
, coff_SWAP_sym_in
, coff_SWAP_lineno_in
,
5669 coff_SWAP_aux_out
, coff_SWAP_sym_out
,
5670 coff_SWAP_lineno_out
, coff_SWAP_reloc_out
,
5671 coff_SWAP_filehdr_out
, coff_SWAP_aouthdr_out
,
5672 coff_SWAP_scnhdr_out
,
5673 FILHSZ
, AOUTSZ
, SCNHSZ_V01
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
, FILNMLEN
,
5674 #ifdef COFF_LONG_FILENAMES
5679 COFF_DEFAULT_LONG_SECTION_NAMES
,
5680 COFF_DEFAULT_SECTION_ALIGNMENT_POWER
,
5681 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5686 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5692 coff_SWAP_filehdr_in
, coff_SWAP_aouthdr_in
, coff_SWAP_scnhdr_in
,
5693 coff_SWAP_reloc_in
, ticoff1_bad_format_hook
, coff_set_arch_mach_hook
,
5694 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
5695 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
5696 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
5697 coff_classify_symbol
, coff_compute_section_file_positions
,
5698 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
5699 coff_adjust_symndx
, coff_link_add_one_symbol
,
5700 coff_link_output_has_begun
, coff_final_link_postscript
,
5701 bfd_pe_print_pdata
/* huh */
5705 #ifdef COFF_WITH_PE_BIGOBJ
5706 /* The UID for bigobj files. */
5708 static const char header_bigobj_classid
[16] =
5710 0xC7, 0xA1, 0xBA, 0xD1,
5714 0xFA, 0xF6, 0x6A, 0xA4, 0xDC, 0xB8
5717 /* Swap routines. */
5720 coff_bigobj_swap_filehdr_in (bfd
* abfd
, void * src
, void * dst
)
5722 struct external_ANON_OBJECT_HEADER_BIGOBJ
*filehdr_src
=
5723 (struct external_ANON_OBJECT_HEADER_BIGOBJ
*) src
;
5724 struct internal_filehdr
*filehdr_dst
= (struct internal_filehdr
*) dst
;
5726 filehdr_dst
->f_magic
= H_GET_16 (abfd
, filehdr_src
->Machine
);
5727 filehdr_dst
->f_nscns
= H_GET_32 (abfd
, filehdr_src
->NumberOfSections
);
5728 filehdr_dst
->f_timdat
= H_GET_32 (abfd
, filehdr_src
->TimeDateStamp
);
5729 filehdr_dst
->f_symptr
=
5730 GET_FILEHDR_SYMPTR (abfd
, filehdr_src
->PointerToSymbolTable
);
5731 filehdr_dst
->f_nsyms
= H_GET_32 (abfd
, filehdr_src
->NumberOfSymbols
);
5732 filehdr_dst
->f_opthdr
= 0;
5733 filehdr_dst
->f_flags
= 0;
5735 /* Check other magic numbers. */
5736 if (H_GET_16 (abfd
, filehdr_src
->Sig1
) != IMAGE_FILE_MACHINE_UNKNOWN
5737 || H_GET_16 (abfd
, filehdr_src
->Sig2
) != 0xffff
5738 || H_GET_16 (abfd
, filehdr_src
->Version
) != 2
5739 || memcmp (filehdr_src
->ClassID
, header_bigobj_classid
, 16) != 0)
5740 filehdr_dst
->f_opthdr
= 0xffff;
5742 /* Note that CLR metadata are ignored. */
5746 coff_bigobj_swap_filehdr_out (bfd
*abfd
, void * in
, void * out
)
5748 struct internal_filehdr
*filehdr_in
= (struct internal_filehdr
*) in
;
5749 struct external_ANON_OBJECT_HEADER_BIGOBJ
*filehdr_out
=
5750 (struct external_ANON_OBJECT_HEADER_BIGOBJ
*) out
;
5752 memset (filehdr_out
, 0, sizeof (*filehdr_out
));
5754 H_PUT_16 (abfd
, IMAGE_FILE_MACHINE_UNKNOWN
, filehdr_out
->Sig1
);
5755 H_PUT_16 (abfd
, 0xffff, filehdr_out
->Sig2
);
5756 H_PUT_16 (abfd
, 2, filehdr_out
->Version
);
5757 memcpy (filehdr_out
->ClassID
, header_bigobj_classid
, 16);
5758 H_PUT_16 (abfd
, filehdr_in
->f_magic
, filehdr_out
->Machine
);
5759 H_PUT_32 (abfd
, filehdr_in
->f_nscns
, filehdr_out
->NumberOfSections
);
5760 H_PUT_32 (abfd
, filehdr_in
->f_timdat
, filehdr_out
->TimeDateStamp
);
5761 PUT_FILEHDR_SYMPTR (abfd
, filehdr_in
->f_symptr
,
5762 filehdr_out
->PointerToSymbolTable
);
5763 H_PUT_32 (abfd
, filehdr_in
->f_nsyms
, filehdr_out
->NumberOfSymbols
);
5765 return bfd_coff_filhsz (abfd
);
5769 coff_bigobj_swap_sym_in (bfd
* abfd
, void * ext1
, void * in1
)
5771 SYMENT_BIGOBJ
*ext
= (SYMENT_BIGOBJ
*) ext1
;
5772 struct internal_syment
*in
= (struct internal_syment
*) in1
;
5774 if (ext
->e
.e_name
[0] == 0)
5776 in
->_n
._n_n
._n_zeroes
= 0;
5777 in
->_n
._n_n
._n_offset
= H_GET_32 (abfd
, ext
->e
.e
.e_offset
);
5781 #if SYMNMLEN != E_SYMNMLEN
5782 #error we need to cope with truncating or extending SYMNMLEN
5784 memcpy (in
->_n
._n_name
, ext
->e
.e_name
, SYMNMLEN
);
5788 in
->n_value
= H_GET_32 (abfd
, ext
->e_value
);
5789 BFD_ASSERT (sizeof (in
->n_scnum
) >= 4);
5790 in
->n_scnum
= H_GET_32 (abfd
, ext
->e_scnum
);
5791 in
->n_type
= H_GET_16 (abfd
, ext
->e_type
);
5792 in
->n_sclass
= H_GET_8 (abfd
, ext
->e_sclass
);
5793 in
->n_numaux
= H_GET_8 (abfd
, ext
->e_numaux
);
5797 coff_bigobj_swap_sym_out (bfd
* abfd
, void * inp
, void * extp
)
5799 struct internal_syment
*in
= (struct internal_syment
*) inp
;
5800 SYMENT_BIGOBJ
*ext
= (SYMENT_BIGOBJ
*) extp
;
5802 if (in
->_n
._n_name
[0] == 0)
5804 H_PUT_32 (abfd
, 0, ext
->e
.e
.e_zeroes
);
5805 H_PUT_32 (abfd
, in
->_n
._n_n
._n_offset
, ext
->e
.e
.e_offset
);
5809 #if SYMNMLEN != E_SYMNMLEN
5810 #error we need to cope with truncating or extending SYMNMLEN
5812 memcpy (ext
->e
.e_name
, in
->_n
._n_name
, SYMNMLEN
);
5816 H_PUT_32 (abfd
, in
->n_value
, ext
->e_value
);
5817 H_PUT_32 (abfd
, in
->n_scnum
, ext
->e_scnum
);
5819 H_PUT_16 (abfd
, in
->n_type
, ext
->e_type
);
5820 H_PUT_8 (abfd
, in
->n_sclass
, ext
->e_sclass
);
5821 H_PUT_8 (abfd
, in
->n_numaux
, ext
->e_numaux
);
5823 return SYMESZ_BIGOBJ
;
5827 coff_bigobj_swap_aux_in (bfd
*abfd
,
5835 AUXENT_BIGOBJ
*ext
= (AUXENT_BIGOBJ
*) ext1
;
5836 union internal_auxent
*in
= (union internal_auxent
*) in1
;
5844 memcpy (in
->x_file
.x_fname
, ext
->File
.Name
,
5845 numaux
* sizeof (AUXENT_BIGOBJ
));
5848 memcpy (in
->x_file
.x_fname
, ext
->File
.Name
, sizeof (ext
->File
.Name
));
5856 in
->x_scn
.x_scnlen
= H_GET_32 (abfd
, ext
->Section
.Length
);
5857 in
->x_scn
.x_nreloc
=
5858 H_GET_16 (abfd
, ext
->Section
.NumberOfRelocations
);
5859 in
->x_scn
.x_nlinno
=
5860 H_GET_16 (abfd
, ext
->Section
.NumberOfLinenumbers
);
5861 in
->x_scn
.x_checksum
= H_GET_32 (abfd
, ext
->Section
.Checksum
);
5862 in
->x_scn
.x_associated
= H_GET_16 (abfd
, ext
->Section
.Number
)
5863 | (H_GET_16 (abfd
, ext
->Section
.HighNumber
) << 16);
5864 in
->x_scn
.x_comdat
= H_GET_8 (abfd
, ext
->Section
.Selection
);
5870 in
->x_sym
.x_tagndx
.l
= H_GET_32 (abfd
, ext
->Sym
.WeakDefaultSymIndex
);
5871 /* Characteristics is ignored. */
5877 coff_bigobj_swap_aux_out (bfd
* abfd
,
5881 int indx ATTRIBUTE_UNUSED
,
5882 int numaux ATTRIBUTE_UNUSED
,
5885 union internal_auxent
* in
= (union internal_auxent
*) inp
;
5886 AUXENT_BIGOBJ
*ext
= (AUXENT_BIGOBJ
*) extp
;
5888 memset (ext
, 0, AUXESZ
);
5893 memcpy (ext
->File
.Name
, in
->x_file
.x_fname
, sizeof (ext
->File
.Name
));
5902 H_PUT_32 (abfd
, in
->x_scn
.x_scnlen
, ext
->Section
.Length
);
5903 H_PUT_16 (abfd
, in
->x_scn
.x_nreloc
,
5904 ext
->Section
.NumberOfRelocations
);
5905 H_PUT_16 (abfd
, in
->x_scn
.x_nlinno
,
5906 ext
->Section
.NumberOfLinenumbers
);
5907 H_PUT_32 (abfd
, in
->x_scn
.x_checksum
, ext
->Section
.Checksum
);
5908 H_PUT_16 (abfd
, in
->x_scn
.x_associated
& 0xffff,
5909 ext
->Section
.Number
);
5910 H_PUT_16 (abfd
, (in
->x_scn
.x_associated
>> 16),
5911 ext
->Section
.HighNumber
);
5912 H_PUT_8 (abfd
, in
->x_scn
.x_comdat
, ext
->Section
.Selection
);
5918 H_PUT_32 (abfd
, in
->x_sym
.x_tagndx
.l
, ext
->Sym
.WeakDefaultSymIndex
);
5919 H_PUT_32 (abfd
, 1, ext
->Sym
.WeakSearchType
);
5924 static bfd_coff_backend_data bigobj_swap_table
=
5926 coff_bigobj_swap_aux_in
, coff_bigobj_swap_sym_in
, coff_SWAP_lineno_in
,
5927 coff_bigobj_swap_aux_out
, coff_bigobj_swap_sym_out
,
5928 coff_SWAP_lineno_out
, coff_SWAP_reloc_out
,
5929 coff_bigobj_swap_filehdr_out
, coff_SWAP_aouthdr_out
,
5930 coff_SWAP_scnhdr_out
,
5931 FILHSZ_BIGOBJ
, AOUTSZ
, SCNHSZ
, SYMESZ_BIGOBJ
, AUXESZ_BIGOBJ
,
5932 RELSZ
, LINESZ
, FILNMLEN_BIGOBJ
,
5934 COFF_DEFAULT_LONG_SECTION_NAMES
,
5935 COFF_DEFAULT_SECTION_ALIGNMENT_POWER
,
5939 coff_bigobj_swap_filehdr_in
, coff_SWAP_aouthdr_in
, coff_SWAP_scnhdr_in
,
5940 coff_SWAP_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
5941 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
5942 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
5943 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
5944 coff_classify_symbol
, coff_compute_section_file_positions
,
5945 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
5946 coff_adjust_symndx
, coff_link_add_one_symbol
,
5947 coff_link_output_has_begun
, coff_final_link_postscript
,
5948 bfd_pe_print_pdata
/* huh */
5951 #endif /* COFF_WITH_PE_BIGOBJ */
5953 #ifndef coff_close_and_cleanup
5954 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5957 #ifndef coff_bfd_free_cached_info
5958 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5961 #ifndef coff_get_section_contents
5962 #define coff_get_section_contents _bfd_generic_get_section_contents
5965 #ifndef coff_bfd_copy_private_symbol_data
5966 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5969 #ifndef coff_bfd_copy_private_header_data
5970 #define coff_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
5973 #ifndef coff_bfd_copy_private_section_data
5974 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5977 #ifndef coff_bfd_copy_private_bfd_data
5978 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5981 #ifndef coff_bfd_merge_private_bfd_data
5982 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5985 #ifndef coff_bfd_set_private_flags
5986 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5989 #ifndef coff_bfd_print_private_bfd_data
5990 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5993 #ifndef coff_bfd_is_local_label_name
5994 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5997 #ifndef coff_bfd_is_target_special_symbol
5998 #define coff_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
6001 #ifndef coff_read_minisymbols
6002 #define coff_read_minisymbols _bfd_generic_read_minisymbols
6005 #ifndef coff_minisymbol_to_symbol
6006 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
6009 /* The reloc lookup routine must be supplied by each individual COFF
6011 #ifndef coff_bfd_reloc_type_lookup
6012 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
6014 #ifndef coff_bfd_reloc_name_lookup
6015 #define coff_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
6018 #ifndef coff_bfd_get_relocated_section_contents
6019 #define coff_bfd_get_relocated_section_contents \
6020 bfd_generic_get_relocated_section_contents
6023 #ifndef coff_bfd_relax_section
6024 #define coff_bfd_relax_section bfd_generic_relax_section
6027 #ifndef coff_bfd_gc_sections
6028 #define coff_bfd_gc_sections bfd_coff_gc_sections
6031 #ifndef coff_bfd_lookup_section_flags
6032 #define coff_bfd_lookup_section_flags bfd_generic_lookup_section_flags
6035 #ifndef coff_bfd_merge_sections
6036 #define coff_bfd_merge_sections bfd_generic_merge_sections
6039 #ifndef coff_bfd_is_group_section
6040 #define coff_bfd_is_group_section bfd_generic_is_group_section
6043 #ifndef coff_bfd_discard_group
6044 #define coff_bfd_discard_group bfd_generic_discard_group
6047 #ifndef coff_section_already_linked
6048 #define coff_section_already_linked \
6049 _bfd_coff_section_already_linked
6052 #ifndef coff_bfd_define_common_symbol
6053 #define coff_bfd_define_common_symbol bfd_generic_define_common_symbol
6056 #ifndef coff_bfd_define_start_stop
6057 #define coff_bfd_define_start_stop bfd_generic_define_start_stop
6060 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
6061 const bfd_target VAR = \
6064 bfd_target_coff_flavour, \
6065 BFD_ENDIAN_BIG, /* Data byte order is big. */ \
6066 BFD_ENDIAN_BIG, /* Header byte order is big. */ \
6067 /* object flags */ \
6068 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
6069 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
6070 /* section flags */ \
6071 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
6072 UNDER, /* Leading symbol underscore. */ \
6073 '/', /* AR_pad_char. */ \
6074 15, /* AR_max_namelen. */ \
6075 0, /* match priority. */ \
6077 /* Data conversion functions. */ \
6078 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
6079 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
6080 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
6082 /* Header conversion functions. */ \
6083 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
6084 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
6085 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
6087 /* bfd_check_format. */ \
6088 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
6089 _bfd_dummy_target }, \
6090 /* bfd_set_format. */ \
6091 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
6092 /* bfd_write_contents. */ \
6093 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
6096 BFD_JUMP_TABLE_GENERIC (coff), \
6097 BFD_JUMP_TABLE_COPY (coff), \
6098 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
6099 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
6100 BFD_JUMP_TABLE_SYMBOLS (coff), \
6101 BFD_JUMP_TABLE_RELOCS (coff), \
6102 BFD_JUMP_TABLE_WRITE (coff), \
6103 BFD_JUMP_TABLE_LINK (coff), \
6104 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
6111 #define CREATE_BIGHDR_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
6112 const bfd_target VAR = \
6115 bfd_target_coff_flavour, \
6116 BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \
6117 BFD_ENDIAN_BIG, /* Header byte order is big. */ \
6118 /* object flags */ \
6119 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
6120 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
6121 /* section flags */ \
6122 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
6123 UNDER, /* Leading symbol underscore. */ \
6124 '/', /* AR_pad_char. */ \
6125 15, /* AR_max_namelen. */ \
6126 0, /* match priority. */ \
6128 /* Data conversion functions. */ \
6129 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
6130 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
6131 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
6133 /* Header conversion functions. */ \
6134 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
6135 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
6136 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
6138 /* bfd_check_format. */ \
6139 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
6140 _bfd_dummy_target }, \
6141 /* bfd_set_format. */ \
6142 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
6143 /* bfd_write_contents. */ \
6144 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
6147 BFD_JUMP_TABLE_GENERIC (coff), \
6148 BFD_JUMP_TABLE_COPY (coff), \
6149 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
6150 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
6151 BFD_JUMP_TABLE_SYMBOLS (coff), \
6152 BFD_JUMP_TABLE_RELOCS (coff), \
6153 BFD_JUMP_TABLE_WRITE (coff), \
6154 BFD_JUMP_TABLE_LINK (coff), \
6155 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
6162 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
6163 const bfd_target VAR = \
6166 bfd_target_coff_flavour, \
6167 BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \
6168 BFD_ENDIAN_LITTLE, /* Header byte order is little. */ \
6169 /* object flags */ \
6170 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
6171 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
6172 /* section flags */ \
6173 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
6174 UNDER, /* Leading symbol underscore. */ \
6175 '/', /* AR_pad_char. */ \
6176 15, /* AR_max_namelen. */ \
6177 0, /* match priority. */ \
6179 /* Data conversion functions. */ \
6180 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
6181 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
6182 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
6183 /* Header conversion functions. */ \
6184 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
6185 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
6186 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
6187 /* bfd_check_format. */ \
6188 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
6189 _bfd_dummy_target }, \
6190 /* bfd_set_format. */ \
6191 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
6192 /* bfd_write_contents. */ \
6193 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
6196 BFD_JUMP_TABLE_GENERIC (coff), \
6197 BFD_JUMP_TABLE_COPY (coff), \
6198 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
6199 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
6200 BFD_JUMP_TABLE_SYMBOLS (coff), \
6201 BFD_JUMP_TABLE_RELOCS (coff), \
6202 BFD_JUMP_TABLE_WRITE (coff), \
6203 BFD_JUMP_TABLE_LINK (coff), \
6204 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \