1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright (C) 1990-2019 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 i386 coff format is implemented in the file
36 @file{coff-i386.c}. This file @code{#include}s
37 @file{coff/i386.h} which defines the external structure of the
38 coff format for the i386, and @file{coff/internal.h} which
39 defines the internal structure. @file{coff-i386.c} also
40 defines the relocations used by the i386 coff format
44 Porting to a new version of coff
46 The recommended method is to select from the existing
47 implementations the version of coff which is most like the one
48 you want to use. For example, we'll say that i386 coff is
49 the one you select, and that your coff flavour is called foo.
50 Copy @file{i386coff.c} to @file{foocoff.c}, copy
51 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
52 and add the lines to @file{targets.c} and @file{Makefile.in}
53 so that your new back end is used. Alter the shapes of the
54 structures in @file{../include/coff/foo.h} so that they match
55 what you need. You will probably also have to add
56 @code{#ifdef}s to the code in @file{coff/internal.h} and
57 @file{coffcode.h} if your version of coff is too wild.
59 You can verify that your new BFD backend works quite simply by
60 building @file{objdump} from the @file{binutils} directory,
61 and making sure that its version of what's going on and your
62 host system's idea (assuming it has the pretty standard coff
63 dump utility, usually called @code{att-dump} or just
64 @code{dump}) are the same. Then clean up your code, and send
65 what you've done to Cygnus. Then your stuff will be in the
66 next release, and you won't have to keep integrating it.
69 How the coff backend works
74 The Coff backend is split into generic routines that are
75 applicable to any Coff target and routines that are specific
76 to a particular target. The target-specific routines are
77 further split into ones which are basically the same for all
78 Coff targets except that they use the external symbol format
79 or use different values for certain constants.
81 The generic routines are in @file{coffgen.c}. These routines
82 work for any Coff target. They use some hooks into the target
83 specific code; the hooks are in a @code{bfd_coff_backend_data}
84 structure, one of which exists for each target.
86 The essentially similar target-specific routines are in
87 @file{coffcode.h}. This header file includes executable C code.
88 The various Coff targets first include the appropriate Coff
89 header file, make any special defines that are needed, and
90 then include @file{coffcode.h}.
92 Some of the Coff targets then also have additional routines in
93 the target source file itself.
96 Coff long section names
98 In the standard Coff object format, section names are limited to
99 the eight bytes available in the @code{s_name} field of the
100 @code{SCNHDR} section header structure. The format requires the
101 field to be NUL-padded, but not necessarily NUL-terminated, so
102 the longest section names permitted are a full eight characters.
104 The Microsoft PE variants of the Coff object file format add
105 an extension to support the use of long section names. This
106 extension is defined in section 4 of the Microsoft PE/COFF
107 specification (rev 8.1). If a section name is too long to fit
108 into the section header's @code{s_name} field, it is instead
109 placed into the string table, and the @code{s_name} field is
110 filled with a slash ("/") followed by the ASCII decimal
111 representation of the offset of the full name relative to the
114 Note that this implies that the extension can only be used in object
115 files, as executables do not contain a string table. The standard
116 specifies that long section names from objects emitted into executable
117 images are to be truncated.
119 However, as a GNU extension, BFD can generate executable images
120 that contain a string table and long section names. This
121 would appear to be technically valid, as the standard only says
122 that Coff debugging information is deprecated, not forbidden,
123 and in practice it works, although some tools that parse PE files
124 expecting the MS standard format may become confused; @file{PEview} is
127 The functionality is supported in BFD by code implemented under
128 the control of the macro @code{COFF_LONG_SECTION_NAMES}. If not
129 defined, the format does not support long section names in any way.
130 If defined, it is used to initialise a flag,
131 @code{_bfd_coff_long_section_names}, and a hook function pointer,
132 @code{_bfd_coff_set_long_section_names}, in the Coff backend data
133 structure. The flag controls the generation of long section names
134 in output BFDs at runtime; if it is false, as it will be by default
135 when generating an executable image, long section names are truncated;
136 if true, the long section names extension is employed. The hook
137 points to a function that allows the value of the flag to be altered
138 at runtime, on formats that support long section names at all; on
139 other formats it points to a stub that returns an error indication.
141 With input BFDs, the flag is set according to whether any long section
142 names are detected while reading the section headers. For a completely
143 new BFD, the flag is set to the default for the target format. This
144 information can be used by a client of the BFD library when deciding
145 what output format to generate, and means that a BFD that is opened
146 for read and subsequently converted to a writeable BFD and modified
147 in-place will retain whatever format it had on input.
149 If @code{COFF_LONG_SECTION_NAMES} is simply defined (blank), or is
150 defined to the value "1", then long section names are enabled by
151 default; if it is defined to the value zero, they are disabled by
152 default (but still accepted in input BFDs). The header @file{coffcode.h}
153 defines a macro, @code{COFF_DEFAULT_LONG_SECTION_NAMES}, which is
154 used in the backends to initialise the backend data structure fields
155 appropriately; see the comments for further detail.
160 Each flavour of coff supported in BFD has its own header file
161 describing the external layout of the structures. There is also
162 an internal description of the coff layout, in
163 @file{coff/internal.h}. A major function of the
164 coff backend is swapping the bytes and twiddling the bits to
165 translate the external form of the structures into the normal
166 internal form. This is all performed in the
167 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
168 elements are different sizes between different versions of
169 coff; it is the duty of the coff version specific include file
170 to override the definitions of various packing routines in
171 @file{coffcode.h}. E.g., the size of line number entry in coff is
172 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
173 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
174 correct one. No doubt, some day someone will find a version of
175 coff which has a varying field size not catered to at the
176 moment. To port BFD, that person will have to add more @code{#defines}.
177 Three of the bit twiddling routines are exported to
178 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
179 and @code{coff_swap_lineno_in}. @code{GDB} reads the symbol
180 table on its own, but uses BFD to fix things up. More of the
181 bit twiddlers are exported for @code{gas};
182 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
183 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
184 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
185 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
186 of all the symbol table and reloc drudgery itself, thereby
187 saving the internal BFD overhead, but uses BFD to swap things
188 on the way out, making cross ports much safer. Doing so also
189 allows BFD (and thus the linker) to use the same header files
190 as @code{gas}, which makes one avenue to disaster disappear.
195 The simple canonical form for symbols used by BFD is not rich
196 enough to keep all the information available in a coff symbol
197 table. The back end gets around this problem by keeping the original
198 symbol table around, "behind the scenes".
200 When a symbol table is requested (through a call to
201 @code{bfd_canonicalize_symtab}), a request gets through to
202 @code{coff_get_normalized_symtab}. This reads the symbol table from
203 the coff file and swaps all the structures inside into the
204 internal form. It also fixes up all the pointers in the table
205 (represented in the file by offsets from the first symbol in
206 the table) into physical pointers to elements in the new
207 internal table. This involves some work since the meanings of
208 fields change depending upon context: a field that is a
209 pointer to another structure in the symbol table at one moment
210 may be the size in bytes of a structure at the next. Another
211 pass is made over the table. All symbols which mark file names
212 (<<C_FILE>> symbols) are modified so that the internal
213 string points to the value in the auxent (the real filename)
214 rather than the normal text associated with the symbol
217 At this time the symbol names are moved around. Coff stores
218 all symbols less than nine characters long physically
219 within the symbol table; longer strings are kept at the end of
220 the file in the string table. This pass moves all strings
221 into memory and replaces them with pointers to the strings.
223 The symbol table is massaged once again, this time to create
224 the canonical table used by the BFD application. Each symbol
225 is inspected in turn, and a decision made (using the
226 @code{sclass} field) about the various flags to set in the
227 @code{asymbol}. @xref{Symbols}. The generated canonical table
228 shares strings with the hidden internal symbol table.
230 Any linenumbers are read from the coff file too, and attached
231 to the symbols which own the functions the linenumbers belong to.
236 Writing a symbol to a coff file which didn't come from a coff
237 file will lose any debugging information. The @code{asymbol}
238 structure remembers the BFD from which the symbol was taken, and on
239 output the back end makes sure that the same destination target as
240 source target is present.
242 When the symbols have come from a coff file then all the
243 debugging information is preserved.
245 Symbol tables are provided for writing to the back end in a
246 vector of pointers to pointers. This allows applications like
247 the linker to accumulate and output large symbol tables
248 without having to do too much byte copying.
250 This function runs through the provided symbol table and
251 patches each symbol marked as a file place holder
252 (@code{C_FILE}) to point to the next file place holder in the
253 list. It also marks each @code{offset} field in the list with
254 the offset from the first symbol of the current symbol.
256 Another function of this procedure is to turn the canonical
257 value form of BFD into the form used by coff. Internally, BFD
258 expects symbol values to be offsets from a section base; so a
259 symbol physically at 0x120, but in a section starting at
260 0x100, would have the value 0x20. Coff expects symbols to
261 contain their final value, so symbols have their values
262 changed at this point to reflect their sum with their owning
263 section. This transformation uses the
264 <<output_section>> field of the @code{asymbol}'s
265 @code{asection} @xref{Sections}.
267 o <<coff_mangle_symbols>>
269 This routine runs though the provided symbol table and uses
270 the offsets generated by the previous pass and the pointers
271 generated when the symbol table was read in to create the
272 structured hierarchy required by coff. It changes each pointer
273 to a symbol into the index into the symbol table of the asymbol.
275 o <<coff_write_symbols>>
277 This routine runs through the symbol table and patches up the
278 symbols from their internal form into the coff way, calls the
279 bit twiddlers, and writes out the table to the file.
288 The hidden information for an <<asymbol>> is described in a
289 <<combined_entry_type>>:
293 .typedef struct coff_ptr_struct
295 . {* Remembers the offset from the first symbol in the file for
296 . this symbol. Generated by coff_renumber_symbols. *}
297 . unsigned int offset;
299 . {* Should the value of this symbol be renumbered. Used for
300 . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
301 . unsigned int fix_value : 1;
303 . {* Should the tag field of this symbol be renumbered.
304 . Created by coff_pointerize_aux. *}
305 . unsigned int fix_tag : 1;
307 . {* Should the endidx field of this symbol be renumbered.
308 . Created by coff_pointerize_aux. *}
309 . unsigned int fix_end : 1;
311 . {* Should the x_csect.x_scnlen field be renumbered.
312 . Created by coff_pointerize_aux. *}
313 . unsigned int fix_scnlen : 1;
315 . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
316 . index into the line number entries. Set by coff_slurp_symbol_table. *}
317 . unsigned int fix_line : 1;
319 . {* The container for the symbol structure as read and translated
323 . union internal_auxent auxent;
324 . struct internal_syment syment;
327 . {* Selector for the union above. *}
328 . bfd_boolean is_sym;
329 .} combined_entry_type;
332 .{* Each canonical asymbol really looks like this: *}
334 .typedef struct coff_symbol_struct
336 . {* The actual symbol which the rest of BFD works with *}
339 . {* A pointer to the hidden information for this symbol *}
340 . combined_entry_type *native;
342 . {* A pointer to the linenumber information for this symbol *}
343 . struct lineno_cache_entry *lineno;
345 . {* Have the line numbers been relocated yet ? *}
346 . bfd_boolean done_lineno;
351 #include "libiberty.h"
356 #include "coffswap.h"
359 #define STRING_SIZE_SIZE 4
361 #define DOT_DEBUG ".debug"
362 #define DOT_ZDEBUG ".zdebug"
363 #define GNU_LINKONCE_WI ".gnu.linkonce.wi."
364 #define GNU_LINKONCE_WT ".gnu.linkonce.wt."
365 #define DOT_RELOC ".reloc"
367 #if defined (COFF_LONG_SECTION_NAMES)
368 /* Needed to expand the inputs to BLANKOR1TOODD. */
369 #define COFFLONGSECTIONCATHELPER(x,y) x ## y
370 /* If the input macro Y is blank or '1', return an odd number; if it is
371 '0', return an even number. Result undefined in all other cases. */
372 #define BLANKOR1TOODD(y) COFFLONGSECTIONCATHELPER(1,y)
373 /* Defined to numerical 0 or 1 according to whether generation of long
374 section names is disabled or enabled by default. */
375 #define COFF_ENABLE_LONG_SECTION_NAMES (BLANKOR1TOODD(COFF_LONG_SECTION_NAMES) & 1)
376 /* Where long section names are supported, we allow them to be enabled
377 and disabled at runtime, so select an appropriate hook function for
378 _bfd_coff_set_long_section_names. */
379 #define COFF_LONG_SECTION_NAMES_SETTER bfd_coff_set_long_section_names_allowed
380 #else /* !defined (COFF_LONG_SECTION_NAMES) */
381 /* If long section names are not supported, this stub disallows any
382 attempt to enable them at run-time. */
383 #define COFF_LONG_SECTION_NAMES_SETTER bfd_coff_set_long_section_names_disallowed
384 #endif /* defined (COFF_LONG_SECTION_NAMES) */
386 /* Define a macro that can be used to initialise both the fields relating
387 to long section names in the backend data struct simultaneously. */
388 #if COFF_ENABLE_LONG_SECTION_NAMES
389 #define COFF_DEFAULT_LONG_SECTION_NAMES (TRUE), COFF_LONG_SECTION_NAMES_SETTER
390 #else /* !COFF_ENABLE_LONG_SECTION_NAMES */
391 #define COFF_DEFAULT_LONG_SECTION_NAMES (FALSE), COFF_LONG_SECTION_NAMES_SETTER
392 #endif /* COFF_ENABLE_LONG_SECTION_NAMES */
394 #if defined (COFF_LONG_SECTION_NAMES)
395 static bfd_boolean bfd_coff_set_long_section_names_allowed
397 #else /* !defined (COFF_LONG_SECTION_NAMES) */
398 static bfd_boolean bfd_coff_set_long_section_names_disallowed
400 #endif /* defined (COFF_LONG_SECTION_NAMES) */
401 static long sec_to_styp_flags
402 (const char *, flagword);
403 static bfd_boolean styp_to_sec_flags
404 (bfd *, void *, const char *, asection *, flagword *);
405 static bfd_boolean coff_bad_format_hook
407 static void coff_set_custom_section_alignment
408 (bfd *, asection *, const struct coff_section_alignment_entry *,
410 static bfd_boolean coff_new_section_hook
412 static bfd_boolean coff_set_arch_mach_hook
414 static bfd_boolean coff_write_relocs
416 static bfd_boolean coff_set_flags
417 (bfd *, unsigned int *, unsigned short *);
418 static bfd_boolean coff_set_arch_mach
419 (bfd *, enum bfd_architecture, unsigned long) ATTRIBUTE_UNUSED;
420 static bfd_boolean coff_compute_section_file_positions
422 static bfd_boolean coff_write_object_contents
423 (bfd *) ATTRIBUTE_UNUSED;
424 static bfd_boolean coff_set_section_contents
425 (bfd *, asection *, const void *, file_ptr, bfd_size_type);
426 static void * buy_and_read
427 (bfd *, file_ptr, bfd_size_type);
428 static bfd_boolean coff_slurp_line_table
430 static bfd_boolean coff_slurp_symbol_table
432 static enum coff_symbol_classification coff_classify_symbol
433 (bfd *, struct internal_syment *);
434 static bfd_boolean coff_slurp_reloc_table
435 (bfd *, asection *, asymbol **);
436 static long coff_canonicalize_reloc
437 (bfd *, asection *, arelent **, asymbol **);
438 #ifndef coff_mkobject_hook
439 static void * coff_mkobject_hook
440 (bfd *, void *, void *);
443 static flagword handle_COMDAT
444 (bfd *, flagword, void *, const char *, asection *);
446 #ifdef COFF_IMAGE_WITH_PE
447 static bfd_boolean coff_read_word
448 (bfd *, unsigned int *);
449 static unsigned int coff_compute_checksum
451 static bfd_boolean coff_apply_checksum
455 static bfd_boolean ticoff0_bad_format_hook
457 static bfd_boolean ticoff1_bad_format_hook
461 /* void warning(); */
463 #if defined (COFF_LONG_SECTION_NAMES)
465 bfd_coff_set_long_section_names_allowed (bfd *abfd, int enable)
467 coff_backend_info (abfd)->_bfd_coff_long_section_names = enable;
470 #else /* !defined (COFF_LONG_SECTION_NAMES) */
472 bfd_coff_set_long_section_names_disallowed (bfd *abfd, int enable)
478 #endif /* defined (COFF_LONG_SECTION_NAMES) */
480 /* Return a word with STYP_* (scnhdr.s_flags) flags set to represent
481 the incoming SEC_* flags. The inverse of this function is
482 styp_to_sec_flags(). NOTE: If you add to/change this routine, you
483 should probably mirror the changes in styp_to_sec_flags(). */
487 /* Macros for setting debugging flags. */
490 #define STYP_XCOFF_DEBUG STYP_DEBUG
492 #define STYP_XCOFF_DEBUG STYP_INFO
495 #ifdef COFF_ALIGN_IN_S_FLAGS
496 #define STYP_DEBUG_INFO STYP_DSECT
498 #define STYP_DEBUG_INFO STYP_INFO
502 sec_to_styp_flags (const char *sec_name, flagword sec_flags)
506 if (!strcmp (sec_name, _TEXT))
508 styp_flags = STYP_TEXT;
510 else if (!strcmp (sec_name, _DATA))
512 styp_flags = STYP_DATA;
514 else if (!strcmp (sec_name, _BSS))
516 styp_flags = STYP_BSS;
519 else if (!strcmp (sec_name, _COMMENT))
521 styp_flags = STYP_INFO;
522 #endif /* _COMMENT */
525 else if (!strcmp (sec_name, _LIB))
527 styp_flags = STYP_LIB;
531 else if (!strcmp (sec_name, _LIT))
533 styp_flags = STYP_LIT;
536 else if (CONST_STRNEQ (sec_name, DOT_DEBUG)
537 || CONST_STRNEQ (sec_name, DOT_ZDEBUG))
539 /* Handle the XCOFF debug section and DWARF2 debug sections. */
541 styp_flags = STYP_XCOFF_DEBUG;
543 styp_flags = STYP_DEBUG_INFO;
545 else if (CONST_STRNEQ (sec_name, ".stab"))
547 styp_flags = STYP_DEBUG_INFO;
549 #ifdef COFF_LONG_SECTION_NAMES
550 else if (CONST_STRNEQ (sec_name, GNU_LINKONCE_WI)
551 || CONST_STRNEQ (sec_name, GNU_LINKONCE_WT))
553 styp_flags = STYP_DEBUG_INFO;
557 else if (!strcmp (sec_name, _PAD))
559 styp_flags = STYP_PAD;
561 else if (!strcmp (sec_name, _LOADER))
563 styp_flags = STYP_LOADER;
565 else if (!strcmp (sec_name, _EXCEPT))
567 styp_flags = STYP_EXCEPT;
569 else if (!strcmp (sec_name, _TYPCHK))
571 styp_flags = STYP_TYPCHK;
573 else if (sec_flags & SEC_DEBUGGING)
577 for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++)
578 if (!strcmp (sec_name, xcoff_dwsect_names[i].name))
580 styp_flags = STYP_DWARF | xcoff_dwsect_names[i].flag;
585 /* Try and figure out what it should be */
586 else if (sec_flags & SEC_CODE)
588 styp_flags = STYP_TEXT;
590 else if (sec_flags & SEC_DATA)
592 styp_flags = STYP_DATA;
594 else if (sec_flags & SEC_READONLY)
596 #ifdef STYP_LIT /* 29k readonly text/data section */
597 styp_flags = STYP_LIT;
599 styp_flags = STYP_TEXT;
600 #endif /* STYP_LIT */
602 else if (sec_flags & SEC_LOAD)
604 styp_flags = STYP_TEXT;
606 else if (sec_flags & SEC_ALLOC)
608 styp_flags = STYP_BSS;
612 if (sec_flags & SEC_TIC54X_CLINK)
613 styp_flags |= STYP_CLINK;
617 if (sec_flags & SEC_TIC54X_BLOCK)
618 styp_flags |= STYP_BLOCK;
622 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
623 styp_flags |= STYP_NOLOAD;
629 #else /* COFF_WITH_PE */
631 /* The PE version; see above for the general comments. The non-PE
632 case seems to be more guessing, and breaks PE format; specifically,
633 .rdata is readonly, but it sure ain't text. Really, all this
634 should be set up properly in gas (or whatever assembler is in use),
635 and honor whatever objcopy/strip, etc. sent us as input. */
638 sec_to_styp_flags (const char *sec_name, flagword sec_flags)
641 bfd_boolean is_dbg = FALSE;
643 if (CONST_STRNEQ (sec_name, DOT_DEBUG)
644 || CONST_STRNEQ (sec_name, DOT_ZDEBUG)
645 #ifdef COFF_LONG_SECTION_NAMES
646 || CONST_STRNEQ (sec_name, GNU_LINKONCE_WI)
647 || CONST_STRNEQ (sec_name, GNU_LINKONCE_WT)
649 || CONST_STRNEQ (sec_name, ".stab"))
652 /* caution: there are at least three groups of symbols that have
653 very similar bits and meanings: IMAGE_SCN*, SEC_*, and STYP_*.
654 SEC_* are the BFD internal flags, used for generic BFD
655 information. STYP_* are the COFF section flags which appear in
656 COFF files. IMAGE_SCN_* are the PE section flags which appear in
657 PE files. The STYP_* flags and the IMAGE_SCN_* flags overlap,
658 but there are more IMAGE_SCN_* flags. */
660 /* FIXME: There is no gas syntax to specify the debug section flag. */
663 sec_flags &= (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD
664 | SEC_LINK_DUPLICATES_SAME_CONTENTS
665 | SEC_LINK_DUPLICATES_SAME_SIZE);
666 sec_flags |= SEC_DEBUGGING | SEC_READONLY;
672 if ((sec_flags & SEC_CODE) != 0)
673 styp_flags |= IMAGE_SCN_CNT_CODE;
674 if ((sec_flags & (SEC_DATA | SEC_DEBUGGING)) != 0)
675 styp_flags |= IMAGE_SCN_CNT_INITIALIZED_DATA;
676 if ((sec_flags & SEC_ALLOC) != 0 && (sec_flags & SEC_LOAD) == 0)
677 styp_flags |= IMAGE_SCN_CNT_UNINITIALIZED_DATA; /* ==STYP_BSS */
679 /* skip constRUCTOR */
681 if ((sec_flags & SEC_IS_COMMON) != 0)
682 styp_flags |= IMAGE_SCN_LNK_COMDAT;
683 if ((sec_flags & SEC_DEBUGGING) != 0)
684 styp_flags |= IMAGE_SCN_MEM_DISCARDABLE;
685 if ((sec_flags & SEC_EXCLUDE) != 0 && !is_dbg)
686 styp_flags |= IMAGE_SCN_LNK_REMOVE;
687 if ((sec_flags & SEC_NEVER_LOAD) != 0 && !is_dbg)
688 styp_flags |= IMAGE_SCN_LNK_REMOVE;
691 if (sec_flags & SEC_LINK_ONCE)
692 styp_flags |= IMAGE_SCN_LNK_COMDAT;
694 & (SEC_LINK_DUPLICATES_DISCARD | SEC_LINK_DUPLICATES_SAME_CONTENTS
695 | SEC_LINK_DUPLICATES_SAME_SIZE)) != 0)
696 styp_flags |= IMAGE_SCN_LNK_COMDAT;
698 /* skip LINKER_CREATED */
700 if ((sec_flags & SEC_COFF_NOREAD) == 0)
701 styp_flags |= IMAGE_SCN_MEM_READ; /* Invert NOREAD for read. */
702 if ((sec_flags & SEC_READONLY) == 0)
703 styp_flags |= IMAGE_SCN_MEM_WRITE; /* Invert READONLY for write. */
704 if (sec_flags & SEC_CODE)
705 styp_flags |= IMAGE_SCN_MEM_EXECUTE; /* CODE->EXECUTE. */
706 if (sec_flags & SEC_COFF_SHARED)
707 styp_flags |= IMAGE_SCN_MEM_SHARED; /* Shared remains meaningful. */
712 #endif /* COFF_WITH_PE */
714 /* Return a word with SEC_* flags set to represent the incoming STYP_*
715 flags (from scnhdr.s_flags). The inverse of this function is
716 sec_to_styp_flags(). NOTE: If you add to/change this routine, you
717 should probably mirror the changes in sec_to_styp_flags(). */
722 styp_to_sec_flags (bfd *abfd ATTRIBUTE_UNUSED,
725 asection *section ATTRIBUTE_UNUSED,
728 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
729 long styp_flags = internal_s->s_flags;
730 flagword sec_flags = 0;
733 if (styp_flags & STYP_BLOCK)
734 sec_flags |= SEC_TIC54X_BLOCK;
738 if (styp_flags & STYP_CLINK)
739 sec_flags |= SEC_TIC54X_CLINK;
743 if (styp_flags & STYP_NOLOAD)
744 sec_flags |= SEC_NEVER_LOAD;
745 #endif /* STYP_NOLOAD */
747 /* For 386 COFF, at least, an unloadable text or data section is
748 actually a shared library section. */
749 if (styp_flags & STYP_TEXT)
751 if (sec_flags & SEC_NEVER_LOAD)
752 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
754 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
756 else if (styp_flags & STYP_DATA)
758 if (sec_flags & SEC_NEVER_LOAD)
759 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
761 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
763 else if (styp_flags & STYP_BSS)
765 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
766 if (sec_flags & SEC_NEVER_LOAD)
767 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
770 sec_flags |= SEC_ALLOC;
772 else if (styp_flags & STYP_INFO)
774 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
775 defined. coff_compute_section_file_positions uses
776 COFF_PAGE_SIZE to ensure that the low order bits of the
777 section VMA and the file offset match. If we don't know
778 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
779 and demand page loading of the file will fail. */
780 #if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS)
781 sec_flags |= SEC_DEBUGGING;
784 else if (styp_flags & STYP_PAD)
787 else if (styp_flags & STYP_EXCEPT)
788 sec_flags |= SEC_LOAD;
789 else if (styp_flags & STYP_LOADER)
790 sec_flags |= SEC_LOAD;
791 else if (styp_flags & STYP_TYPCHK)
792 sec_flags |= SEC_LOAD;
793 else if (styp_flags & STYP_DWARF)
794 sec_flags |= SEC_DEBUGGING;
796 else if (strcmp (name, _TEXT) == 0)
798 if (sec_flags & SEC_NEVER_LOAD)
799 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
801 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
803 else if (strcmp (name, _DATA) == 0)
805 if (sec_flags & SEC_NEVER_LOAD)
806 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
808 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
810 else if (strcmp (name, _BSS) == 0)
812 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
813 if (sec_flags & SEC_NEVER_LOAD)
814 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
817 sec_flags |= SEC_ALLOC;
819 else if (CONST_STRNEQ (name, DOT_DEBUG)
820 || CONST_STRNEQ (name, DOT_ZDEBUG)
822 || strcmp (name, _COMMENT) == 0
824 #ifdef COFF_LONG_SECTION_NAMES
825 || CONST_STRNEQ (name, GNU_LINKONCE_WI)
826 || CONST_STRNEQ (name, GNU_LINKONCE_WT)
828 || CONST_STRNEQ (name, ".stab"))
830 #ifdef COFF_PAGE_SIZE
831 sec_flags |= SEC_DEBUGGING;
835 else if (strcmp (name, _LIB) == 0)
839 else if (strcmp (name, _LIT) == 0)
840 sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY;
843 sec_flags |= SEC_ALLOC | SEC_LOAD;
845 #ifdef STYP_LIT /* A29k readonly text/data section type. */
846 if ((styp_flags & STYP_LIT) == STYP_LIT)
847 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
848 #endif /* STYP_LIT */
850 #ifdef STYP_OTHER_LOAD /* Other loaded sections. */
851 if (styp_flags & STYP_OTHER_LOAD)
852 sec_flags = (SEC_LOAD | SEC_ALLOC);
853 #endif /* STYP_SDATA */
855 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
856 /* As a GNU extension, if the name begins with .gnu.linkonce, we
857 only link a single copy of the section. This is used to support
858 g++. g++ will emit each template expansion in its own section.
859 The symbols will be defined as weak, so that multiple definitions
860 are permitted. The GNU linker extension is to actually discard
861 all but one of the sections. */
862 if (CONST_STRNEQ (name, ".gnu.linkonce"))
863 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
866 if (flags_ptr == NULL)
869 * flags_ptr = sec_flags;
873 #else /* COFF_WITH_PE */
876 handle_COMDAT (bfd * abfd,
882 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
883 bfd_byte *esymstart, *esym, *esymend;
885 char *target_name = NULL;
887 sec_flags |= SEC_LINK_ONCE;
889 /* Unfortunately, the PE format stores essential information in
890 the symbol table, of all places. We need to extract that
891 information now, so that objdump and the linker will know how
892 to handle the section without worrying about the symbols. We
893 can't call slurp_symtab, because the linker doesn't want the
896 /* COMDAT sections are special. The first symbol is the section
897 symbol, which tells what kind of COMDAT section it is. The
898 second symbol is the "comdat symbol" - the one with the
899 unique name. GNU uses the section symbol for the unique
900 name; MS uses ".text" for every comdat section. Sigh. - DJ */
902 /* This is not mirrored in sec_to_styp_flags(), but there
903 doesn't seem to be a need to, either, and it would at best be
906 if (! _bfd_coff_get_external_symbols (abfd))
909 esymstart = esym = (bfd_byte *) obj_coff_external_syms (abfd);
910 esymend = esym + obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd);
912 while (esym < esymend)
914 struct internal_syment isym;
915 char buf[SYMNMLEN + 1];
918 bfd_coff_swap_sym_in (abfd, esym, & isym);
920 BFD_ASSERT (sizeof (internal_s->s_name) <= SYMNMLEN);
922 if (isym.n_scnum == section->target_index)
924 /* According to the MSVC documentation, the first
925 TWO entries with the section # are both of
926 interest to us. The first one is the "section
927 symbol" (section name). The second is the comdat
928 symbol name. Here, we've found the first
929 qualifying entry; we distinguish it from the
930 second with a state flag.
932 In the case of gas-generated (at least until that
933 is fixed) .o files, it isn't necessarily the
934 second one. It may be some other later symbol.
936 Since gas also doesn't follow MS conventions and
937 emits the section similar to .text$<name>, where
938 <something> is the name we're looking for, we
939 distinguish the two as follows:
941 If the section name is simply a section name (no
942 $) we presume it's MS-generated, and look at
943 precisely the second symbol for the comdat name.
944 If the section name has a $, we assume it's
945 gas-generated, and look for <something> (whatever
946 follows the $) as the comdat symbol. */
948 /* All 3 branches use this. */
949 symname = _bfd_coff_internal_syment_name (abfd, &isym, buf);
951 /* PR 17512 file: 078-11867-0.004 */
954 _bfd_error_handler (_("%pB: unable to load COMDAT section name"),
963 /* The first time we've seen the symbol. */
964 union internal_auxent aux;
966 /* If it isn't the stuff we're expecting, die;
967 The MS documentation is vague, but it
968 appears that the second entry serves BOTH
969 as the comdat symbol and the defining
970 symbol record (either C_STAT or C_EXT,
971 possibly with an aux entry with debug
972 information if it's a function.) It
973 appears the only way to find the second one
974 is to count. (On Intel, they appear to be
975 adjacent, but on Alpha, they have been
978 Here, we think we've found the first one,
979 but there's some checking we can do to be
982 if (! ((isym.n_sclass == C_STAT
983 || isym.n_sclass == C_EXT)
984 && BTYPE (isym.n_type) == T_NULL
985 && isym.n_value == 0))
987 /* Malformed input files can trigger this test.
989 _bfd_error_handler (_("%pB: error: unexpected symbol '%s' in COMDAT section"),
994 /* FIXME LATER: MSVC generates section names
995 like .text for comdats. Gas generates
996 names like .text$foo__Fv (in the case of a
997 function). See comment above for more. */
999 if (isym.n_sclass == C_STAT && strcmp (name, symname) != 0)
1000 /* xgettext:c-format */
1001 _bfd_error_handler (_("%pB: warning: COMDAT symbol '%s'"
1002 " does not match section name '%s'"),
1003 abfd, symname, name);
1007 /* PR 17512: file: e2cfe54f. */
1008 if (esym + bfd_coff_symesz (abfd) >= esymend)
1010 /* xgettext:c-format */
1011 _bfd_error_handler (_("%pB: warning: no symbol for"
1012 " section '%s' found"),
1016 /* This is the section symbol. */
1017 bfd_coff_swap_aux_in (abfd, (esym + bfd_coff_symesz (abfd)),
1018 isym.n_type, isym.n_sclass,
1019 0, isym.n_numaux, & aux);
1021 target_name = strchr (name, '$');
1022 if (target_name != NULL)
1030 /* FIXME: Microsoft uses NODUPLICATES and
1031 ASSOCIATIVE, but gnu uses ANY and
1032 SAME_SIZE. Unfortunately, gnu doesn't do
1033 the comdat symbols right. So, until we can
1034 fix it to do the right thing, we are
1035 temporarily disabling comdats for the MS
1036 types (they're used in DLLs and C++, but we
1037 don't support *their* C++ libraries anyway
1040 /* Cygwin does not follow the MS style, and
1041 uses ANY and SAME_SIZE where NODUPLICATES
1042 and ASSOCIATIVE should be used. For
1043 Interix, we just do the right thing up
1046 switch (aux.x_scn.x_comdat)
1048 case IMAGE_COMDAT_SELECT_NODUPLICATES:
1049 #ifdef STRICT_PE_FORMAT
1050 sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
1052 sec_flags &= ~SEC_LINK_ONCE;
1056 case IMAGE_COMDAT_SELECT_ANY:
1057 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
1060 case IMAGE_COMDAT_SELECT_SAME_SIZE:
1061 sec_flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
1064 case IMAGE_COMDAT_SELECT_EXACT_MATCH:
1065 /* Not yet fully implemented ??? */
1066 sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
1069 /* debug$S gets this case; other
1072 /* There may be no symbol... we'll search
1073 the whole table... Is this the right
1074 place to play this game? Or should we do
1075 it when reading it in. */
1076 case IMAGE_COMDAT_SELECT_ASSOCIATIVE:
1077 #ifdef STRICT_PE_FORMAT
1078 /* FIXME: This is not currently implemented. */
1079 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
1081 sec_flags &= ~SEC_LINK_ONCE;
1085 default: /* 0 means "no symbol" */
1086 /* debug$F gets this case; other
1088 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
1095 /* Gas mode: the first matching on partial name. */
1097 #ifndef TARGET_UNDERSCORE
1098 #define TARGET_UNDERSCORE 0
1100 /* Is this the name we're looking for ? */
1101 if (strcmp (target_name,
1102 symname + (TARGET_UNDERSCORE ? 1 : 0)) != 0)
1104 /* Not the name we're looking for */
1105 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
1110 /* MSVC mode: the lexically second symbol (or
1111 drop through from the above). */
1116 /* This must the second symbol with the
1117 section #. It is the actual symbol name.
1118 Intel puts the two adjacent, but Alpha (at
1119 least) spreads them out. */
1121 amt = sizeof (struct coff_comdat_info);
1122 coff_section_data (abfd, section)->comdat
1123 = (struct coff_comdat_info *) bfd_alloc (abfd, amt);
1124 if (coff_section_data (abfd, section)->comdat == NULL)
1127 coff_section_data (abfd, section)->comdat->symbol =
1128 (esym - esymstart) / bfd_coff_symesz (abfd);
1130 amt = strlen (symname) + 1;
1131 newname = (char *) bfd_alloc (abfd, amt);
1132 if (newname == NULL)
1135 strcpy (newname, symname);
1136 coff_section_data (abfd, section)->comdat->name
1144 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
1152 /* The PE version; see above for the general comments.
1154 Since to set the SEC_LINK_ONCE and associated flags, we have to
1155 look at the symbol table anyway, we return the symbol table index
1156 of the symbol being used as the COMDAT symbol. This is admittedly
1157 ugly, but there's really nowhere else that we have access to the
1158 required information. FIXME: Is the COMDAT symbol index used for
1159 any purpose other than objdump? */
1162 styp_to_sec_flags (bfd *abfd,
1166 flagword *flags_ptr)
1168 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
1169 unsigned long styp_flags = internal_s->s_flags;
1171 bfd_boolean result = TRUE;
1172 bfd_boolean is_dbg = FALSE;
1174 if (CONST_STRNEQ (name, DOT_DEBUG)
1175 || CONST_STRNEQ (name, DOT_ZDEBUG)
1176 #ifdef COFF_LONG_SECTION_NAMES
1177 || CONST_STRNEQ (name, GNU_LINKONCE_WI)
1178 || CONST_STRNEQ (name, GNU_LINKONCE_WT)
1179 /* FIXME: These definitions ought to be in a header file. */
1180 #define GNU_DEBUGLINK ".gnu_debuglink"
1181 #define GNU_DEBUGALTLINK ".gnu_debugaltlink"
1182 || CONST_STRNEQ (name, GNU_DEBUGLINK)
1183 || CONST_STRNEQ (name, GNU_DEBUGALTLINK)
1185 || CONST_STRNEQ (name, ".stab"))
1187 /* Assume read only unless IMAGE_SCN_MEM_WRITE is specified. */
1188 sec_flags = SEC_READONLY;
1190 /* If section disallows read, then set the NOREAD flag. */
1191 if ((styp_flags & IMAGE_SCN_MEM_READ) == 0)
1192 sec_flags |= SEC_COFF_NOREAD;
1194 /* Process each flag bit in styp_flags in turn. */
1197 unsigned long flag = styp_flags & - styp_flags;
1198 char * unhandled = NULL;
1200 styp_flags &= ~ flag;
1202 /* We infer from the distinct read/write/execute bits the settings
1203 of some of the bfd flags; the actual values, should we need them,
1204 are also in pei_section_data (abfd, section)->pe_flags. */
1209 unhandled = "STYP_DSECT";
1212 unhandled = "STYP_GROUP";
1215 unhandled = "STYP_COPY";
1218 unhandled = "STYP_OVER";
1220 #ifdef SEC_NEVER_LOAD
1222 sec_flags |= SEC_NEVER_LOAD;
1225 case IMAGE_SCN_MEM_READ:
1226 sec_flags &= ~SEC_COFF_NOREAD;
1228 case IMAGE_SCN_TYPE_NO_PAD:
1231 case IMAGE_SCN_LNK_OTHER:
1232 unhandled = "IMAGE_SCN_LNK_OTHER";
1234 case IMAGE_SCN_MEM_NOT_CACHED:
1235 unhandled = "IMAGE_SCN_MEM_NOT_CACHED";
1237 case IMAGE_SCN_MEM_NOT_PAGED:
1238 /* Generate a warning message rather using the 'unhandled'
1239 variable as this will allow some .sys files generate by
1240 other toolchains to be processed. See bugzilla issue 196. */
1241 /* xgettext:c-format */
1242 _bfd_error_handler (_("%pB: warning: ignoring section flag"
1243 " %s in section %s"),
1244 abfd, "IMAGE_SCN_MEM_NOT_PAGED", name);
1246 case IMAGE_SCN_MEM_EXECUTE:
1247 sec_flags |= SEC_CODE;
1249 case IMAGE_SCN_MEM_WRITE:
1250 sec_flags &= ~ SEC_READONLY;
1252 case IMAGE_SCN_MEM_DISCARDABLE:
1253 /* The MS PE spec says that debug sections are DISCARDABLE,
1254 but the presence of a DISCARDABLE flag does not necessarily
1255 mean that a given section contains debug information. Thus
1256 we only set the SEC_DEBUGGING flag on sections that we
1257 recognise as containing debug information. */
1260 || strcmp (name, _COMMENT) == 0
1264 sec_flags |= SEC_DEBUGGING | SEC_READONLY;
1267 case IMAGE_SCN_MEM_SHARED:
1268 sec_flags |= SEC_COFF_SHARED;
1270 case IMAGE_SCN_LNK_REMOVE:
1272 sec_flags |= SEC_EXCLUDE;
1274 case IMAGE_SCN_CNT_CODE:
1275 sec_flags |= SEC_CODE | SEC_ALLOC | SEC_LOAD;
1277 case IMAGE_SCN_CNT_INITIALIZED_DATA:
1279 sec_flags |= SEC_DEBUGGING;
1281 sec_flags |= SEC_DATA | SEC_ALLOC | SEC_LOAD;
1283 case IMAGE_SCN_CNT_UNINITIALIZED_DATA:
1284 sec_flags |= SEC_ALLOC;
1286 case IMAGE_SCN_LNK_INFO:
1287 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
1288 defined. coff_compute_section_file_positions uses
1289 COFF_PAGE_SIZE to ensure that the low order bits of the
1290 section VMA and the file offset match. If we don't know
1291 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
1292 and demand page loading of the file will fail. */
1293 #ifdef COFF_PAGE_SIZE
1294 sec_flags |= SEC_DEBUGGING;
1297 case IMAGE_SCN_LNK_COMDAT:
1298 /* COMDAT gets very special treatment. */
1299 sec_flags = handle_COMDAT (abfd, sec_flags, hdr, name, section);
1302 /* Silently ignore for now. */
1306 /* If the section flag was not handled, report it here. */
1307 if (unhandled != NULL)
1310 /* xgettext:c-format */
1311 (_("%pB (%s): section flag %s (%#lx) ignored"),
1312 abfd, name, unhandled, flag);
1317 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
1318 /* As a GNU extension, if the name begins with .gnu.linkonce, we
1319 only link a single copy of the section. This is used to support
1320 g++. g++ will emit each template expansion in its own section.
1321 The symbols will be defined as weak, so that multiple definitions
1322 are permitted. The GNU linker extension is to actually discard
1323 all but one of the sections. */
1324 if (CONST_STRNEQ (name, ".gnu.linkonce"))
1325 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1329 * flags_ptr = sec_flags;
1334 #endif /* COFF_WITH_PE */
1336 #define get_index(symbol) ((symbol)->udata.i)
1340 bfd_coff_backend_data
1344 .{* COFF symbol classifications. *}
1346 .enum coff_symbol_classification
1348 . {* Global symbol. *}
1349 . COFF_SYMBOL_GLOBAL,
1350 . {* Common symbol. *}
1351 . COFF_SYMBOL_COMMON,
1352 . {* Undefined symbol. *}
1353 . COFF_SYMBOL_UNDEFINED,
1354 . {* Local symbol. *}
1355 . COFF_SYMBOL_LOCAL,
1356 . {* PE section symbol. *}
1357 . COFF_SYMBOL_PE_SECTION
1360 .typedef asection * (*coff_gc_mark_hook_fn)
1361 . (asection *, struct bfd_link_info *, struct internal_reloc *,
1362 . struct coff_link_hash_entry *, struct internal_syment *);
1364 Special entry points for gdb to swap in coff symbol table parts:
1367 . void (*_bfd_coff_swap_aux_in)
1368 . (bfd *, void *, int, int, int, int, void *);
1370 . void (*_bfd_coff_swap_sym_in)
1371 . (bfd *, void *, void *);
1373 . void (*_bfd_coff_swap_lineno_in)
1374 . (bfd *, void *, void *);
1376 . unsigned int (*_bfd_coff_swap_aux_out)
1377 . (bfd *, void *, int, int, int, int, void *);
1379 . unsigned int (*_bfd_coff_swap_sym_out)
1380 . (bfd *, void *, void *);
1382 . unsigned int (*_bfd_coff_swap_lineno_out)
1383 . (bfd *, void *, void *);
1385 . unsigned int (*_bfd_coff_swap_reloc_out)
1386 . (bfd *, void *, void *);
1388 . unsigned int (*_bfd_coff_swap_filehdr_out)
1389 . (bfd *, void *, void *);
1391 . unsigned int (*_bfd_coff_swap_aouthdr_out)
1392 . (bfd *, void *, void *);
1394 . unsigned int (*_bfd_coff_swap_scnhdr_out)
1395 . (bfd *, void *, void *);
1397 . unsigned int _bfd_filhsz;
1398 . unsigned int _bfd_aoutsz;
1399 . unsigned int _bfd_scnhsz;
1400 . unsigned int _bfd_symesz;
1401 . unsigned int _bfd_auxesz;
1402 . unsigned int _bfd_relsz;
1403 . unsigned int _bfd_linesz;
1404 . unsigned int _bfd_filnmlen;
1405 . bfd_boolean _bfd_coff_long_filenames;
1407 . bfd_boolean _bfd_coff_long_section_names;
1408 . bfd_boolean (*_bfd_coff_set_long_section_names)
1411 . unsigned int _bfd_coff_default_section_alignment_power;
1412 . bfd_boolean _bfd_coff_force_symnames_in_strings;
1413 . unsigned int _bfd_coff_debug_string_prefix_length;
1414 . unsigned int _bfd_coff_max_nscns;
1416 . void (*_bfd_coff_swap_filehdr_in)
1417 . (bfd *, void *, void *);
1419 . void (*_bfd_coff_swap_aouthdr_in)
1420 . (bfd *, void *, void *);
1422 . void (*_bfd_coff_swap_scnhdr_in)
1423 . (bfd *, void *, void *);
1425 . void (*_bfd_coff_swap_reloc_in)
1426 . (bfd *abfd, void *, void *);
1428 . bfd_boolean (*_bfd_coff_bad_format_hook)
1431 . bfd_boolean (*_bfd_coff_set_arch_mach_hook)
1434 . void * (*_bfd_coff_mkobject_hook)
1435 . (bfd *, void *, void *);
1437 . bfd_boolean (*_bfd_styp_to_sec_flags_hook)
1438 . (bfd *, void *, const char *, asection *, flagword *);
1440 . void (*_bfd_set_alignment_hook)
1441 . (bfd *, asection *, void *);
1443 . bfd_boolean (*_bfd_coff_slurp_symbol_table)
1446 . bfd_boolean (*_bfd_coff_symname_in_debug)
1447 . (bfd *, struct internal_syment *);
1449 . bfd_boolean (*_bfd_coff_pointerize_aux_hook)
1450 . (bfd *, combined_entry_type *, combined_entry_type *,
1451 . unsigned int, combined_entry_type *);
1453 . bfd_boolean (*_bfd_coff_print_aux)
1454 . (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1455 . combined_entry_type *, unsigned int);
1457 . void (*_bfd_coff_reloc16_extra_cases)
1458 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
1459 . bfd_byte *, unsigned int *, unsigned int *);
1461 . int (*_bfd_coff_reloc16_estimate)
1462 . (bfd *, asection *, arelent *, unsigned int,
1463 . struct bfd_link_info *);
1465 . enum coff_symbol_classification (*_bfd_coff_classify_symbol)
1466 . (bfd *, struct internal_syment *);
1468 . bfd_boolean (*_bfd_coff_compute_section_file_positions)
1471 . bfd_boolean (*_bfd_coff_start_final_link)
1472 . (bfd *, struct bfd_link_info *);
1474 . bfd_boolean (*_bfd_coff_relocate_section)
1475 . (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
1476 . struct internal_reloc *, struct internal_syment *, asection **);
1478 . reloc_howto_type *(*_bfd_coff_rtype_to_howto)
1479 . (bfd *, asection *, struct internal_reloc *,
1480 . struct coff_link_hash_entry *, struct internal_syment *, bfd_vma *);
1482 . bfd_boolean (*_bfd_coff_adjust_symndx)
1483 . (bfd *, struct bfd_link_info *, bfd *, asection *,
1484 . struct internal_reloc *, bfd_boolean *);
1486 . bfd_boolean (*_bfd_coff_link_add_one_symbol)
1487 . (struct bfd_link_info *, bfd *, const char *, flagword,
1488 . asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
1489 . struct bfd_link_hash_entry **);
1491 . bfd_boolean (*_bfd_coff_link_output_has_begun)
1492 . (bfd *, struct coff_final_link_info *);
1494 . bfd_boolean (*_bfd_coff_final_link_postscript)
1495 . (bfd *, struct coff_final_link_info *);
1497 . bfd_boolean (*_bfd_coff_print_pdata)
1500 .} bfd_coff_backend_data;
1502 .#define coff_backend_info(abfd) \
1503 . ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1505 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1506 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1508 .#define bfd_coff_swap_sym_in(a,e,i) \
1509 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1511 .#define bfd_coff_swap_lineno_in(a,e,i) \
1512 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1514 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1515 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1517 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1518 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1520 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1521 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1523 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1524 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1526 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1527 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1529 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1530 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1532 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1533 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1535 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1536 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1537 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1538 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1539 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1540 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
1541 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1542 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1543 .#define bfd_coff_long_filenames(abfd) \
1544 . (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1545 .#define bfd_coff_long_section_names(abfd) \
1546 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1547 .#define bfd_coff_set_long_section_names(abfd, enable) \
1548 . ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable))
1549 .#define bfd_coff_default_section_alignment_power(abfd) \
1550 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1551 .#define bfd_coff_max_nscns(abfd) \
1552 . (coff_backend_info (abfd)->_bfd_coff_max_nscns)
1554 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1555 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1557 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1558 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1560 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1561 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1563 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1564 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1566 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1567 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1569 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1570 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1571 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1572 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
1573 . (abfd, filehdr, aouthdr))
1575 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
1576 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1577 . (abfd, scnhdr, name, section, flags_ptr))
1579 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1580 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1582 .#define bfd_coff_slurp_symbol_table(abfd)\
1583 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1585 .#define bfd_coff_symname_in_debug(abfd, sym)\
1586 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1588 .#define bfd_coff_force_symnames_in_strings(abfd)\
1589 . (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
1591 .#define bfd_coff_debug_string_prefix_length(abfd)\
1592 . (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
1594 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1595 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1596 . (abfd, file, base, symbol, aux, indaux))
1598 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
1599 . reloc, data, src_ptr, dst_ptr)\
1600 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1601 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1603 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1604 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1605 . (abfd, section, reloc, shrink, link_info))
1607 .#define bfd_coff_classify_symbol(abfd, sym)\
1608 . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1611 .#define bfd_coff_compute_section_file_positions(abfd)\
1612 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1615 .#define bfd_coff_start_final_link(obfd, info)\
1616 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1618 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1619 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1620 . (obfd, info, ibfd, o, con, rel, isyms, secs))
1621 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1622 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1623 . (abfd, sec, rel, h, sym, addendp))
1624 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1625 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1626 . (obfd, info, ibfd, sec, rel, adjustedp))
1627 .#define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
1628 . value, string, cp, coll, hashp)\
1629 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1630 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1632 .#define bfd_coff_link_output_has_begun(a,p) \
1633 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p))
1634 .#define bfd_coff_final_link_postscript(a,p) \
1635 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
1637 .#define bfd_coff_have_print_pdata(a) \
1638 . (coff_backend_info (a)->_bfd_coff_print_pdata)
1639 .#define bfd_coff_print_pdata(a,p) \
1640 . ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p))
1642 .{* Macro: Returns true if the bfd is a PE executable as opposed to a
1643 . PE object file. *}
1644 .#define bfd_pei_p(abfd) \
1645 . (CONST_STRNEQ ((abfd)->xvec->name, "pei-"))
1648 /* See whether the magic number matches. */
1651 coff_bad_format_hook (bfd * abfd ATTRIBUTE_UNUSED, void * filehdr)
1653 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1655 if (BADMAG (*internal_f))
1663 ticoff0_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED, void * filehdr)
1665 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1667 if (COFF0_BADMAG (*internal_f))
1676 ticoff1_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED, void * filehdr)
1678 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1680 if (COFF1_BADMAG (*internal_f))
1687 /* Check whether this section uses an alignment other than the
1691 coff_set_custom_section_alignment (bfd *abfd ATTRIBUTE_UNUSED,
1693 const struct coff_section_alignment_entry *alignment_table,
1694 const unsigned int table_size)
1696 const unsigned int default_alignment = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1699 for (i = 0; i < table_size; ++i)
1701 const char *secname = bfd_get_section_name (abfd, section);
1703 if (alignment_table[i].comparison_length == (unsigned int) -1
1704 ? strcmp (alignment_table[i].name, secname) == 0
1705 : strncmp (alignment_table[i].name, secname,
1706 alignment_table[i].comparison_length) == 0)
1709 if (i >= table_size)
1712 if (alignment_table[i].default_alignment_min != COFF_ALIGNMENT_FIELD_EMPTY
1713 && default_alignment < alignment_table[i].default_alignment_min)
1716 if (alignment_table[i].default_alignment_max != COFF_ALIGNMENT_FIELD_EMPTY
1717 #if COFF_DEFAULT_SECTION_ALIGNMENT_POWER != 0
1718 && default_alignment > alignment_table[i].default_alignment_max
1723 section->alignment_power = alignment_table[i].alignment_power;
1726 /* Custom section alignment records. */
1728 static const struct coff_section_alignment_entry
1729 coff_section_alignment_table[] =
1731 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1732 COFF_SECTION_ALIGNMENT_ENTRIES,
1734 /* There must not be any gaps between .stabstr sections. */
1735 { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1736 1, COFF_ALIGNMENT_FIELD_EMPTY, 0 },
1737 /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */
1738 { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1739 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1740 /* Similarly for the .ctors and .dtors sections. */
1741 { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1742 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1743 { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1744 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }
1747 static const unsigned int coff_section_alignment_table_size =
1748 sizeof coff_section_alignment_table / sizeof coff_section_alignment_table[0];
1750 /* Initialize a section structure with information peculiar to this
1751 particular implementation of COFF. */
1754 coff_new_section_hook (bfd * abfd, asection * section)
1756 combined_entry_type *native;
1758 unsigned char sclass = C_STAT;
1760 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1763 if (bfd_xcoff_text_align_power (abfd) != 0
1764 && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
1765 section->alignment_power = bfd_xcoff_text_align_power (abfd);
1766 else if (bfd_xcoff_data_align_power (abfd) != 0
1767 && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
1768 section->alignment_power = bfd_xcoff_data_align_power (abfd);
1773 for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++)
1774 if (strcmp (bfd_get_section_name (abfd, section),
1775 xcoff_dwsect_names[i].name) == 0)
1777 section->alignment_power = 0;
1784 /* Set up the section symbol. */
1785 if (!_bfd_generic_new_section_hook (abfd, section))
1788 /* Allocate aux records for section symbols, to store size and
1791 @@ The 10 is a guess at a plausible maximum number of aux entries
1792 (but shouldn't be a constant). */
1793 amt = sizeof (combined_entry_type) * 10;
1794 native = (combined_entry_type *) bfd_zalloc (abfd, amt);
1798 /* We don't need to set up n_name, n_value, or n_scnum in the native
1799 symbol information, since they'll be overridden by the BFD symbol
1800 anyhow. However, we do need to set the type and storage class,
1801 in case this symbol winds up getting written out. The value 0
1802 for n_numaux is already correct. */
1804 native->is_sym = TRUE;
1805 native->u.syment.n_type = T_NULL;
1806 native->u.syment.n_sclass = sclass;
1808 coffsymbol (section->symbol)->native = native;
1810 coff_set_custom_section_alignment (abfd, section,
1811 coff_section_alignment_table,
1812 coff_section_alignment_table_size);
1817 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1819 /* Set the alignment of a BFD section. */
1822 coff_set_alignment_hook (bfd * abfd ATTRIBUTE_UNUSED,
1826 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1829 #ifdef COFF_DECODE_ALIGNMENT
1830 i = COFF_DECODE_ALIGNMENT(hdr->s_flags);
1832 section->alignment_power = i;
1834 #ifdef coff_set_section_load_page
1835 coff_set_section_load_page (section, hdr->s_page);
1839 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1843 coff_set_alignment_hook (bfd * abfd ATTRIBUTE_UNUSED,
1847 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1849 unsigned int alignment_power_const
1850 = hdr->s_flags & IMAGE_SCN_ALIGN_POWER_BIT_MASK;
1852 switch (alignment_power_const)
1854 case IMAGE_SCN_ALIGN_8192BYTES:
1855 case IMAGE_SCN_ALIGN_4096BYTES:
1856 case IMAGE_SCN_ALIGN_2048BYTES:
1857 case IMAGE_SCN_ALIGN_1024BYTES:
1858 case IMAGE_SCN_ALIGN_512BYTES:
1859 case IMAGE_SCN_ALIGN_256BYTES:
1860 case IMAGE_SCN_ALIGN_128BYTES:
1861 case IMAGE_SCN_ALIGN_64BYTES:
1862 case IMAGE_SCN_ALIGN_32BYTES:
1863 case IMAGE_SCN_ALIGN_16BYTES:
1864 case IMAGE_SCN_ALIGN_8BYTES:
1865 case IMAGE_SCN_ALIGN_4BYTES:
1866 case IMAGE_SCN_ALIGN_2BYTES:
1867 case IMAGE_SCN_ALIGN_1BYTES:
1868 section->alignment_power
1869 = IMAGE_SCN_ALIGN_POWER_NUM (alignment_power_const);
1875 /* In a PE image file, the s_paddr field holds the virtual size of a
1876 section, while the s_size field holds the raw size. We also keep
1877 the original section flag value, since not every bit can be
1878 mapped onto a generic BFD section bit. */
1879 if (coff_section_data (abfd, section) == NULL)
1881 amt = sizeof (struct coff_section_tdata);
1882 section->used_by_bfd = bfd_zalloc (abfd, amt);
1883 if (section->used_by_bfd == NULL)
1884 /* FIXME: Return error. */
1888 if (pei_section_data (abfd, section) == NULL)
1890 amt = sizeof (struct pei_section_tdata);
1891 coff_section_data (abfd, section)->tdata = bfd_zalloc (abfd, amt);
1892 if (coff_section_data (abfd, section)->tdata == NULL)
1893 /* FIXME: Return error. */
1896 pei_section_data (abfd, section)->virt_size = hdr->s_paddr;
1897 pei_section_data (abfd, section)->pe_flags = hdr->s_flags;
1899 section->lma = hdr->s_vaddr;
1901 /* Check for extended relocs. */
1902 if (hdr->s_flags & IMAGE_SCN_LNK_NRELOC_OVFL)
1904 struct external_reloc dst;
1905 struct internal_reloc n;
1906 file_ptr oldpos = bfd_tell (abfd);
1907 bfd_size_type relsz = bfd_coff_relsz (abfd);
1909 if (bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0) != 0)
1911 if (bfd_bread (& dst, relsz, abfd) != relsz)
1914 coff_swap_reloc_in (abfd, &dst, &n);
1915 if (bfd_seek (abfd, oldpos, 0) != 0)
1917 section->reloc_count = hdr->s_nreloc = n.r_vaddr - 1;
1918 section->rel_filepos += relsz;
1920 else if (hdr->s_nreloc == 0xffff)
1922 (_("%pB: warning: claims to have 0xffff relocs, without overflow"),
1926 #undef ELIFALIGN_SET
1928 #else /* ! COFF_WITH_PE */
1931 /* We grossly abuse this function to handle XCOFF overflow headers.
1932 When we see one, we correct the reloc and line number counts in the
1933 real header, and remove the section we just created. */
1936 coff_set_alignment_hook (bfd *abfd, asection *section, void * scnhdr)
1938 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1941 if ((hdr->s_flags & STYP_OVRFLO) == 0)
1944 real_sec = coff_section_from_bfd_index (abfd, (int) hdr->s_nreloc);
1945 if (real_sec == NULL)
1948 real_sec->reloc_count = hdr->s_paddr;
1949 real_sec->lineno_count = hdr->s_vaddr;
1951 if (!bfd_section_removed_from_list (abfd, section))
1953 bfd_section_list_remove (abfd, section);
1954 --abfd->section_count;
1958 #else /* ! RS6000COFF_C */
1961 coff_set_alignment_hook (bfd *abfd ATTRIBUTE_UNUSED,
1962 asection *section ATTRIBUTE_UNUSED,
1963 void *scnhdr ATTRIBUTE_UNUSED)
1967 #endif /* ! RS6000COFF_C */
1968 #endif /* ! COFF_WITH_PE */
1969 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1971 #ifndef coff_mkobject
1974 coff_mkobject (bfd * abfd)
1976 coff_data_type *coff;
1977 bfd_size_type amt = sizeof (coff_data_type);
1979 abfd->tdata.coff_obj_data = bfd_zalloc (abfd, amt);
1980 if (abfd->tdata.coff_obj_data == NULL)
1982 coff = coff_data (abfd);
1983 coff->symbols = NULL;
1984 coff->conversion_table = NULL;
1985 coff->raw_syments = NULL;
1986 coff->relocbase = 0;
1987 coff->local_toc_sym_map = 0;
1989 /* make_abs_section(abfd);*/
1995 /* Create the COFF backend specific information. */
1997 #ifndef coff_mkobject_hook
1999 coff_mkobject_hook (bfd * abfd,
2001 void * aouthdr ATTRIBUTE_UNUSED)
2003 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
2004 coff_data_type *coff;
2006 if (! coff_mkobject (abfd))
2009 coff = coff_data (abfd);
2011 coff->sym_filepos = internal_f->f_symptr;
2013 /* These members communicate important constants about the symbol
2014 table to GDB's symbol-reading code. These `constants'
2015 unfortunately vary among coff implementations... */
2016 coff->local_n_btmask = N_BTMASK;
2017 coff->local_n_btshft = N_BTSHFT;
2018 coff->local_n_tmask = N_TMASK;
2019 coff->local_n_tshift = N_TSHIFT;
2020 coff->local_symesz = bfd_coff_symesz (abfd);
2021 coff->local_auxesz = bfd_coff_auxesz (abfd);
2022 coff->local_linesz = bfd_coff_linesz (abfd);
2024 coff->timestamp = internal_f->f_timdat;
2026 obj_raw_syment_count (abfd) =
2027 obj_conv_table_size (abfd) =
2028 internal_f->f_nsyms;
2031 if ((internal_f->f_flags & F_SHROBJ) != 0)
2032 abfd->flags |= DYNAMIC;
2033 if (aouthdr != NULL && internal_f->f_opthdr >= bfd_coff_aoutsz (abfd))
2035 struct internal_aouthdr *internal_a =
2036 (struct internal_aouthdr *) aouthdr;
2037 struct xcoff_tdata *xcoff;
2039 xcoff = xcoff_data (abfd);
2040 # ifdef U803XTOCMAGIC
2041 xcoff->xcoff64 = internal_f->f_magic == U803XTOCMAGIC;
2045 xcoff->full_aouthdr = TRUE;
2046 xcoff->toc = internal_a->o_toc;
2047 xcoff->sntoc = internal_a->o_sntoc;
2048 xcoff->snentry = internal_a->o_snentry;
2049 bfd_xcoff_text_align_power (abfd) = internal_a->o_algntext;
2050 bfd_xcoff_data_align_power (abfd) = internal_a->o_algndata;
2051 xcoff->modtype = internal_a->o_modtype;
2052 xcoff->cputype = internal_a->o_cputype;
2053 xcoff->maxdata = internal_a->o_maxdata;
2054 xcoff->maxstack = internal_a->o_maxstack;
2059 /* Set the flags field from the COFF header read in. */
2060 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
2065 /* FIXME: I'm not sure this is ever executed, since peicode.h
2066 defines coff_mkobject_hook. */
2067 if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
2068 abfd->flags |= HAS_DEBUG;
2071 if ((internal_f->f_flags & F_GO32STUB) != 0)
2073 coff->go32stub = (char *) bfd_alloc (abfd, (bfd_size_type) GO32_STUBSIZE);
2074 if (coff->go32stub == NULL)
2077 if (coff->go32stub != NULL)
2078 memcpy (coff->go32stub, internal_f->go32stub, GO32_STUBSIZE);
2084 /* Determine the machine architecture and type. FIXME: This is target
2085 dependent because the magic numbers are defined in the target
2086 dependent header files. But there is no particular need for this.
2087 If the magic numbers were moved to a separate file, this function
2088 would be target independent and would also be much more successful
2089 at linking together COFF files for different architectures. */
2092 coff_set_arch_mach_hook (bfd *abfd, void * filehdr)
2094 unsigned long machine;
2095 enum bfd_architecture arch;
2096 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
2098 /* Zero selects the default machine for an arch. */
2100 switch (internal_f->f_magic)
2104 arch = bfd_arch_powerpc;
2110 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler. */
2112 arch = bfd_arch_i386;
2117 arch = bfd_arch_i386;
2118 machine = bfd_mach_x86_64;
2123 arch = bfd_arch_ia64;
2130 arch = bfd_arch_arm;
2131 machine = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
2132 if (machine == bfd_mach_arm_unknown)
2134 switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK)
2136 case F_ARM_2: machine = bfd_mach_arm_2; break;
2137 case F_ARM_2a: machine = bfd_mach_arm_2a; break;
2138 case F_ARM_3: machine = bfd_mach_arm_3; break;
2140 case F_ARM_3M: machine = bfd_mach_arm_3M; break;
2141 case F_ARM_4: machine = bfd_mach_arm_4; break;
2142 case F_ARM_4T: machine = bfd_mach_arm_4T; break;
2143 /* The COFF header does not have enough bits available
2144 to cover all the different ARM architectures. So
2145 we interpret F_ARM_5, the highest flag value to mean
2146 "the highest ARM architecture known to BFD" which is
2147 currently the XScale. */
2148 case F_ARM_5: machine = bfd_mach_arm_XScale; break;
2155 arch = bfd_arch_z80;
2156 switch (internal_f->f_flags & F_MACHMASK)
2159 case bfd_mach_z80strict << 12:
2160 case bfd_mach_z80 << 12:
2161 case bfd_mach_z80full << 12:
2162 case bfd_mach_r800 << 12:
2163 machine = ((unsigned)internal_f->f_flags & F_MACHMASK) >> 12;
2172 arch = bfd_arch_z8k;
2173 switch (internal_f->f_flags & F_MACHMASK)
2176 machine = bfd_mach_z8001;
2179 machine = bfd_mach_z8002;
2199 if (xcoff_data (abfd)->cputype != -1)
2200 cputype = xcoff_data (abfd)->cputype & 0xff;
2203 /* We did not get a value from the a.out header. If the
2204 file has not been stripped, we may be able to get the
2205 architecture information from the first symbol, if it
2206 is a .file symbol. */
2207 if (obj_raw_syment_count (abfd) == 0)
2212 struct internal_syment sym;
2213 bfd_size_type amt = bfd_coff_symesz (abfd);
2215 buf = bfd_malloc (amt);
2218 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
2219 || bfd_bread (buf, amt, abfd) != amt)
2224 bfd_coff_swap_sym_in (abfd, buf, & sym);
2225 if (sym.n_sclass == C_FILE)
2226 cputype = sym.n_type & 0xff;
2233 /* FIXME: We don't handle all cases here. */
2238 arch = bfd_xcoff_architecture (abfd);
2239 machine = bfd_xcoff_machine (abfd);
2243 arch = bfd_arch_powerpc;
2244 machine = bfd_mach_ppc_601;
2246 case 2: /* 64 bit PowerPC */
2247 arch = bfd_arch_powerpc;
2248 machine = bfd_mach_ppc_620;
2251 arch = bfd_arch_powerpc;
2252 machine = bfd_mach_ppc;
2255 arch = bfd_arch_rs6000;
2256 machine = bfd_mach_rs6k;
2263 #ifdef SH_ARCH_MAGIC_BIG
2264 case SH_ARCH_MAGIC_BIG:
2265 case SH_ARCH_MAGIC_LITTLE:
2267 case SH_ARCH_MAGIC_WINCE:
2273 #ifdef MIPS_ARCH_MAGIC_WINCE
2274 case MIPS_ARCH_MAGIC_WINCE:
2275 arch = bfd_arch_mips;
2281 #ifdef LYNXCOFFMAGIC
2284 arch = bfd_arch_sparc;
2290 arch = bfd_arch_tic30;
2295 #ifdef TICOFF_TARGET_ARCH
2296 /* This TI COFF section should be used by all new TI COFF v0 targets. */
2298 arch = TICOFF_TARGET_ARCH;
2299 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2305 /* This TI COFF section should be used by all new TI COFF v1/2 targets. */
2306 /* TI COFF1 and COFF2 use the target_id field to specify which arch. */
2309 switch (internal_f->f_target_id)
2313 arch = TICOFF_TARGET_ARCH;
2314 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2318 arch = bfd_arch_obscure;
2320 (_("unrecognized TI COFF target id '0x%x'"),
2321 internal_f->f_target_id);
2327 #ifdef TIC80_ARCH_MAGIC
2328 case TIC80_ARCH_MAGIC:
2329 arch = bfd_arch_tic80;
2335 arch = bfd_arch_mcore;
2339 default: /* Unreadable input file type. */
2340 arch = bfd_arch_obscure;
2344 bfd_default_set_arch_mach (abfd, arch, machine);
2349 symname_in_debug_hook (bfd *abfd ATTRIBUTE_UNUSED,
2350 struct internal_syment *sym ATTRIBUTE_UNUSED)
2352 #ifdef SYMNAME_IN_DEBUG
2353 return SYMNAME_IN_DEBUG (sym) != 0;
2362 #define FORCE_SYMNAMES_IN_STRINGS
2365 /* Handle the csect auxent of a C_EXT, C_AIX_WEAKEXT or C_HIDEXT symbol. */
2368 coff_pointerize_aux_hook (bfd *abfd ATTRIBUTE_UNUSED,
2369 combined_entry_type *table_base,
2370 combined_entry_type *symbol,
2371 unsigned int indaux,
2372 combined_entry_type *aux)
2374 BFD_ASSERT (symbol->is_sym);
2375 int n_sclass = symbol->u.syment.n_sclass;
2377 if (CSECT_SYM_P (n_sclass)
2378 && indaux + 1 == symbol->u.syment.n_numaux)
2380 BFD_ASSERT (! aux->is_sym);
2381 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2383 aux->u.auxent.x_csect.x_scnlen.p =
2384 table_base + aux->u.auxent.x_csect.x_scnlen.l;
2385 aux->fix_scnlen = 1;
2388 /* Return TRUE to indicate that the caller should not do any
2389 further work on this auxent. */
2393 /* Return FALSE to indicate that this auxent should be handled by
2399 #define coff_pointerize_aux_hook 0
2400 #endif /* ! RS6000COFF_C */
2402 /* Print an aux entry. This returns TRUE if it has printed it. */
2405 coff_print_aux (bfd *abfd ATTRIBUTE_UNUSED,
2406 FILE *file ATTRIBUTE_UNUSED,
2407 combined_entry_type *table_base ATTRIBUTE_UNUSED,
2408 combined_entry_type *symbol ATTRIBUTE_UNUSED,
2409 combined_entry_type *aux ATTRIBUTE_UNUSED,
2410 unsigned int indaux ATTRIBUTE_UNUSED)
2412 BFD_ASSERT (symbol->is_sym);
2413 BFD_ASSERT (! aux->is_sym);
2415 if (CSECT_SYM_P (symbol->u.syment.n_sclass)
2416 && indaux + 1 == symbol->u.syment.n_numaux)
2418 /* This is a csect entry. */
2419 fprintf (file, "AUX ");
2420 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
2422 BFD_ASSERT (! aux->fix_scnlen);
2423 fprintf (file, "val %5" BFD_VMA_FMT "d",
2424 aux->u.auxent.x_csect.x_scnlen.l);
2428 fprintf (file, "indx ");
2429 if (! aux->fix_scnlen)
2430 fprintf (file, "%4" BFD_VMA_FMT "d",
2431 aux->u.auxent.x_csect.x_scnlen.l);
2433 fprintf (file, "%4ld",
2434 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
2437 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2438 aux->u.auxent.x_csect.x_parmhash,
2439 (unsigned int) aux->u.auxent.x_csect.x_snhash,
2440 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
2441 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
2442 (unsigned int) aux->u.auxent.x_csect.x_smclas,
2443 aux->u.auxent.x_csect.x_stab,
2444 (unsigned int) aux->u.auxent.x_csect.x_snstab);
2449 /* Return FALSE to indicate that no special action was taken. */
2457 To write relocations, the back end steps though the
2458 canonical relocation table and create an
2459 @code{internal_reloc}. The symbol index to use is removed from
2460 the @code{offset} field in the symbol table supplied. The
2461 address comes directly from the sum of the section base
2462 address and the relocation offset; the type is dug directly
2463 from the howto field. Then the @code{internal_reloc} is
2464 swapped into the shape of an @code{external_reloc} and written
2472 /* AUX's ld wants relocations to be sorted. */
2474 compare_arelent_ptr (const void * x, const void * y)
2476 const arelent **a = (const arelent **) x;
2477 const arelent **b = (const arelent **) y;
2478 bfd_size_type aadr = (*a)->address;
2479 bfd_size_type badr = (*b)->address;
2481 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
2484 #endif /* TARG_AUX */
2487 coff_write_relocs (bfd * abfd, int first_undef)
2491 for (s = abfd->sections; s != NULL; s = s->next)
2494 struct external_reloc dst;
2501 /* Sort relocations before we write them out. */
2504 amt = s->reloc_count;
2505 amt *= sizeof (arelent *);
2506 p = bfd_malloc (amt);
2509 if (s->reloc_count > 0)
2514 memcpy (p, s->orelocation, (size_t) amt);
2515 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
2520 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
2524 if (obj_pe (abfd) && s->reloc_count >= 0xffff)
2526 /* Encode real count here as first reloc. */
2527 struct internal_reloc n;
2529 memset (& n, 0, sizeof (n));
2530 /* Add one to count *this* reloc (grr). */
2531 n.r_vaddr = s->reloc_count + 1;
2532 coff_swap_reloc_out (abfd, &n, &dst);
2533 if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd),
2534 abfd) != bfd_coff_relsz (abfd))
2539 for (i = 0; i < s->reloc_count; i++)
2541 struct internal_reloc n;
2544 memset (& n, 0, sizeof (n));
2546 /* Now we've renumbered the symbols we know where the
2547 undefined symbols live in the table. Check the reloc
2548 entries for symbols who's output bfd isn't the right one.
2549 This is because the symbol was undefined (which means
2550 that all the pointers are never made to point to the same
2551 place). This is a bad thing,'cause the symbols attached
2552 to the output bfd are indexed, so that the relocation
2553 entries know which symbol index they point to. So we
2554 have to look up the output symbol here. */
2556 if (q->sym_ptr_ptr[0] != NULL && q->sym_ptr_ptr[0]->the_bfd != abfd)
2559 const char *sname = q->sym_ptr_ptr[0]->name;
2560 asymbol **outsyms = abfd->outsymbols;
2562 for (j = first_undef; outsyms[j]; j++)
2564 const char *intable = outsyms[j]->name;
2566 if (strcmp (intable, sname) == 0)
2568 /* Got a hit, so repoint the reloc. */
2569 q->sym_ptr_ptr = outsyms + j;
2575 n.r_vaddr = q->address + s->vma;
2578 /* The 29k const/consth reloc pair is a real kludge. The consth
2579 part doesn't have a symbol; it has an offset. So rebuilt
2581 if (q->howto->type == R_IHCONST)
2582 n.r_symndx = q->addend;
2585 if (q->sym_ptr_ptr && q->sym_ptr_ptr[0] != NULL)
2587 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2588 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q, s))
2590 if ((*q->sym_ptr_ptr)->section == bfd_abs_section_ptr
2591 && ((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0)
2593 /* This is a relocation relative to the absolute symbol. */
2597 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
2598 /* Check to see if the symbol reloc points to a symbol
2599 we don't have in our symbol table. */
2600 if (n.r_symndx > obj_conv_table_size (abfd))
2602 bfd_set_error (bfd_error_bad_value);
2603 /* xgettext:c-format */
2604 _bfd_error_handler (_("%pB: reloc against a non-existent"
2605 " symbol index: %ld"),
2612 #ifdef SWAP_OUT_RELOC_OFFSET
2613 n.r_offset = q->addend;
2617 /* Work out reloc type from what is required. */
2618 SELECT_RELOC (n, q->howto);
2620 n.r_type = q->howto->type;
2622 coff_swap_reloc_out (abfd, &n, &dst);
2624 if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd),
2625 abfd) != bfd_coff_relsz (abfd))
2638 /* Set flags and magic number of a coff file from architecture and machine
2639 type. Result is TRUE if we can represent the arch&type, FALSE if not. */
2642 coff_set_flags (bfd * abfd,
2643 unsigned int *magicp ATTRIBUTE_UNUSED,
2644 unsigned short *flagsp ATTRIBUTE_UNUSED)
2646 switch (bfd_get_arch (abfd))
2651 switch (bfd_get_mach (abfd))
2654 case bfd_mach_z80strict:
2656 case bfd_mach_z80full:
2658 *flagsp = bfd_get_mach (abfd) << 12;
2670 switch (bfd_get_mach (abfd))
2672 case bfd_mach_z8001: *flagsp = F_Z8001; break;
2673 case bfd_mach_z8002: *flagsp = F_Z8002; break;
2674 default: return FALSE;
2680 case bfd_arch_tic30:
2681 *magicp = TIC30MAGIC;
2685 #ifdef TICOFF_DEFAULT_MAGIC
2686 case TICOFF_TARGET_ARCH:
2687 /* If there's no indication of which version we want, use the default. */
2689 *magicp = TICOFF_DEFAULT_MAGIC;
2692 /* We may want to output in a different COFF version. */
2693 switch (abfd->xvec->name[4])
2696 *magicp = TICOFF0MAGIC;
2699 *magicp = TICOFF1MAGIC;
2702 *magicp = TICOFF2MAGIC;
2708 TICOFF_TARGET_MACHINE_SET (flagsp, bfd_get_mach (abfd));
2712 #ifdef TIC80_ARCH_MAGIC
2713 case bfd_arch_tic80:
2714 *magicp = TIC80_ARCH_MAGIC;
2721 * magicp = ARMPEMAGIC;
2723 * magicp = ARMMAGIC;
2726 if (APCS_SET (abfd))
2728 if (APCS_26_FLAG (abfd))
2729 * flagsp |= F_APCS26;
2731 if (APCS_FLOAT_FLAG (abfd))
2732 * flagsp |= F_APCS_FLOAT;
2734 if (PIC_FLAG (abfd))
2737 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2738 * flagsp |= F_INTERWORK;
2739 switch (bfd_get_mach (abfd))
2741 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2742 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2743 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2744 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2745 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2746 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2747 case bfd_mach_arm_5: * flagsp |= F_ARM_5; break;
2748 /* FIXME: we do not have F_ARM vaues greater than F_ARM_5.
2749 See also the comment in coff_set_arch_mach_hook(). */
2750 case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break;
2751 case bfd_mach_arm_5TE: * flagsp |= F_ARM_5; break;
2752 case bfd_mach_arm_XScale: * flagsp |= F_ARM_5; break;
2758 case bfd_arch_powerpc:
2763 #if defined(I386MAGIC) || defined(AMD64MAGIC)
2765 #if defined(I386MAGIC)
2766 *magicp = I386MAGIC;
2769 /* Just overwrite the usual value if we're doing Lynx. */
2770 *magicp = LYNXCOFFMAGIC;
2772 #if defined AMD64MAGIC
2773 *magicp = AMD64MAGIC;
2780 *magicp = IA64MAGIC;
2784 #ifdef SH_ARCH_MAGIC_BIG
2786 #ifdef COFF_IMAGE_WITH_PE
2787 *magicp = SH_ARCH_MAGIC_WINCE;
2789 if (bfd_big_endian (abfd))
2790 *magicp = SH_ARCH_MAGIC_BIG;
2792 *magicp = SH_ARCH_MAGIC_LITTLE;
2797 #ifdef MIPS_ARCH_MAGIC_WINCE
2799 *magicp = MIPS_ARCH_MAGIC_WINCE;
2804 case bfd_arch_sparc:
2805 *magicp = SPARCMAGIC;
2807 /* Just overwrite the usual value if we're doing Lynx. */
2808 *magicp = LYNXCOFFMAGIC;
2814 case bfd_arch_rs6000:
2816 case bfd_arch_powerpc:
2818 BFD_ASSERT (bfd_get_flavour (abfd) == bfd_target_xcoff_flavour);
2819 *magicp = bfd_xcoff_magic_number (abfd);
2824 case bfd_arch_mcore:
2825 * magicp = MCOREMAGIC;
2829 default: /* Unknown architecture. */
2830 /* Fall through to "return FALSE" below, to avoid
2831 "statement never reached" errors on the one below. */
2839 coff_set_arch_mach (bfd * abfd,
2840 enum bfd_architecture arch,
2841 unsigned long machine)
2844 unsigned short dummy2;
2846 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2849 if (arch != bfd_arch_unknown
2850 && ! coff_set_flags (abfd, &dummy1, &dummy2))
2851 return FALSE; /* We can't represent this type. */
2853 return TRUE; /* We're easy... */
2856 #ifdef COFF_IMAGE_WITH_PE
2858 /* This is used to sort sections by VMA, as required by PE image
2862 sort_by_secaddr (const void * arg1, const void * arg2)
2864 const asection *a = *(const asection **) arg1;
2865 const asection *b = *(const asection **) arg2;
2867 if (a->vma < b->vma)
2869 else if (a->vma > b->vma)
2875 #endif /* COFF_IMAGE_WITH_PE */
2877 /* Calculate the file position for each section. */
2879 #define ALIGN_SECTIONS_IN_FILE
2880 #if defined(TIC80COFF) || defined(TICOFF)
2881 #undef ALIGN_SECTIONS_IN_FILE
2885 coff_compute_section_file_positions (bfd * abfd)
2888 file_ptr sofar = bfd_coff_filhsz (abfd);
2889 bfd_boolean align_adjust;
2890 unsigned int target_index;
2891 #ifdef ALIGN_SECTIONS_IN_FILE
2892 asection *previous = NULL;
2896 #ifdef COFF_IMAGE_WITH_PE
2899 if (coff_data (abfd)->link_info
2900 || (pe_data (abfd) && pe_data (abfd)->pe_opthdr.FileAlignment))
2902 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
2904 /* If no file alignment has been set, default to one.
2905 This repairs 'ld -r' for arm-wince-pe target. */
2909 /* PR 17512: file: 0ac816d3. */
2912 bfd_set_error (bfd_error_file_too_big);
2914 /* xgettext:c-format */
2915 (_("%pB: page size is too large (0x%x)"), abfd, page_size);
2920 page_size = PE_DEF_FILE_ALIGNMENT;
2922 #ifdef COFF_PAGE_SIZE
2923 int page_size = COFF_PAGE_SIZE;
2928 /* On XCOFF, if we have symbols, set up the .debug section. */
2929 if (bfd_get_symcount (abfd) > 0)
2932 bfd_size_type i, symcount;
2936 symcount = bfd_get_symcount (abfd);
2937 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
2939 coff_symbol_type *cf;
2941 cf = coff_symbol_from (*symp);
2943 && cf->native != NULL
2944 && cf->native->is_sym
2945 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
2949 len = strlen (bfd_asymbol_name (*symp));
2950 if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd))
2951 sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd);
2958 dsec = bfd_make_section_old_way (abfd, DOT_DEBUG);
2962 dsec->flags |= SEC_HAS_CONTENTS;
2967 if (bfd_get_start_address (abfd))
2968 /* A start address may have been added to the original file. In this
2969 case it will need an optional header to record it. */
2970 abfd->flags |= EXEC_P;
2972 if (abfd->flags & EXEC_P)
2973 sofar += bfd_coff_aoutsz (abfd);
2975 else if (xcoff_data (abfd)->full_aouthdr)
2976 sofar += bfd_coff_aoutsz (abfd);
2978 sofar += SMALL_AOUTSZ;
2981 sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
2984 /* XCOFF handles overflows in the reloc and line number count fields
2985 by allocating a new section header to hold the correct counts. */
2986 for (current = abfd->sections; current != NULL; current = current->next)
2987 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2988 sofar += bfd_coff_scnhsz (abfd);
2991 #ifdef COFF_IMAGE_WITH_PE
2993 /* PE requires the sections to be in memory order when listed in
2994 the section headers. It also does not like empty loadable
2995 sections. The sections apparently do not have to be in the
2996 right order in the image file itself, but we do need to get the
2997 target_index values right. */
3000 asection **section_list;
3004 #ifdef COFF_PAGE_SIZE
3005 /* Clear D_PAGED if section alignment is smaller than
3007 if (pe_data (abfd)->pe_opthdr.SectionAlignment < COFF_PAGE_SIZE)
3008 abfd->flags &= ~D_PAGED;
3012 for (current = abfd->sections; current != NULL; current = current->next)
3015 /* We allocate an extra cell to simplify the final loop. */
3016 amt = sizeof (struct asection *) * (count + 1);
3017 section_list = (asection **) bfd_malloc (amt);
3018 if (section_list == NULL)
3022 for (current = abfd->sections; current != NULL; current = current->next)
3024 section_list[i] = current;
3027 section_list[i] = NULL;
3029 qsort (section_list, count, sizeof (asection *), sort_by_secaddr);
3031 /* Rethread the linked list into sorted order; at the same time,
3032 assign target_index values. */
3034 abfd->sections = NULL;
3035 abfd->section_last = NULL;
3036 for (i = 0; i < count; i++)
3038 current = section_list[i];
3039 bfd_section_list_append (abfd, current);
3041 /* Later, if the section has zero size, we'll be throwing it
3042 away, so we don't want to number it now. Note that having
3043 a zero size and having real contents are different
3044 concepts: .bss has no contents, but (usually) non-zero
3046 if (current->size == 0)
3048 /* Discard. However, it still might have (valid) symbols
3049 in it, so arbitrarily set it to section 1 (indexing is
3050 1-based here; usually .text). __end__ and other
3051 contents of .endsection really have this happen.
3052 FIXME: This seems somewhat dubious. */
3053 current->target_index = 1;
3056 current->target_index = target_index++;
3059 free (section_list);
3061 #else /* ! COFF_IMAGE_WITH_PE */
3063 /* Set the target_index field. */
3065 for (current = abfd->sections; current != NULL; current = current->next)
3066 current->target_index = target_index++;
3068 #endif /* ! COFF_IMAGE_WITH_PE */
3070 if (target_index >= bfd_coff_max_nscns (abfd))
3072 bfd_set_error (bfd_error_file_too_big);
3074 /* xgettext:c-format */
3075 (_("%pB: too many sections (%d)"), abfd, target_index);
3079 align_adjust = FALSE;
3080 for (current = abfd->sections;
3082 current = current->next)
3084 #ifdef COFF_IMAGE_WITH_PE
3085 /* With PE we have to pad each section to be a multiple of its
3086 page size too, and remember both sizes. */
3087 if (coff_section_data (abfd, current) == NULL)
3089 bfd_size_type amt = sizeof (struct coff_section_tdata);
3091 current->used_by_bfd = bfd_zalloc (abfd, amt);
3092 if (current->used_by_bfd == NULL)
3095 if (pei_section_data (abfd, current) == NULL)
3097 bfd_size_type amt = sizeof (struct pei_section_tdata);
3099 coff_section_data (abfd, current)->tdata = bfd_zalloc (abfd, amt);
3100 if (coff_section_data (abfd, current)->tdata == NULL)
3103 if (pei_section_data (abfd, current)->virt_size == 0)
3104 pei_section_data (abfd, current)->virt_size = current->size;
3107 /* Only deal with sections which have contents. */
3108 if (!(current->flags & SEC_HAS_CONTENTS))
3111 current->rawsize = current->size;
3113 #ifdef COFF_IMAGE_WITH_PE
3114 /* Make sure we skip empty sections in a PE image. */
3115 if (current->size == 0)
3119 /* Align the sections in the file to the same boundary on
3120 which they are aligned in virtual memory. */
3121 #ifdef ALIGN_SECTIONS_IN_FILE
3122 if ((abfd->flags & EXEC_P) != 0)
3124 /* Make sure this section is aligned on the right boundary - by
3125 padding the previous section up if necessary. */
3128 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3131 /* Make sure the file offset and the vma of .text/.data are at the
3132 same page offset, so that the file can be mmap'ed without being
3133 relocated. Failing that, AIX is able to load and execute the
3134 program, but it will be silently relocated (possible as
3135 executables are PIE). But the relocation is slightly costly and
3136 complexify the use of addr2line or gdb. So better to avoid it,
3137 like does the native linker. Usually gnu ld makes sure that
3138 the vma of .text is the file offset so this issue shouldn't
3139 appear unless you are stripping such an executable.
3141 AIX loader checks the text section alignment of (vma - filepos),
3142 and the native linker doesn't try to align the text sections.
3145 0 .text 000054cc 10000128 10000128 00000128 2**5
3146 CONTENTS, ALLOC, LOAD, CODE
3149 if (!strcmp (current->name, _TEXT)
3150 || !strcmp (current->name, _DATA))
3152 bfd_vma align = 4096;
3153 bfd_vma sofar_off = sofar % align;
3154 bfd_vma vma_off = current->vma % align;
3156 if (vma_off > sofar_off)
3157 sofar += vma_off - sofar_off;
3158 else if (vma_off < sofar_off)
3159 sofar += align + vma_off - sofar_off;
3162 if (previous != NULL)
3163 previous->size += sofar - old_sofar;
3168 /* In demand paged files the low order bits of the file offset
3169 must match the low order bits of the virtual address. */
3170 #ifdef COFF_PAGE_SIZE
3171 if ((abfd->flags & D_PAGED) != 0
3172 && (current->flags & SEC_ALLOC) != 0)
3173 sofar += (current->vma - (bfd_vma) sofar) % page_size;
3175 current->filepos = sofar;
3177 #ifdef COFF_IMAGE_WITH_PE
3178 /* Set the padded size. */
3179 current->size = (current->size + page_size - 1) & -page_size;
3182 sofar += current->size;
3184 #ifdef ALIGN_SECTIONS_IN_FILE
3185 /* Make sure that this section is of the right size too. */
3186 if ((abfd->flags & EXEC_P) == 0)
3188 bfd_size_type old_size;
3190 old_size = current->size;
3191 current->size = BFD_ALIGN (current->size,
3192 1 << current->alignment_power);
3193 align_adjust = current->size != old_size;
3194 sofar += current->size - old_size;
3199 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3200 align_adjust = sofar != old_sofar;
3201 current->size += sofar - old_sofar;
3205 #ifdef COFF_IMAGE_WITH_PE
3206 /* For PE we need to make sure we pad out to the aligned
3207 size, in case the caller only writes out data to the
3209 if (pei_section_data (abfd, current)->virt_size < current->size)
3210 align_adjust = TRUE;
3214 /* Force .lib sections to start at zero. The vma is then
3215 incremented in coff_set_section_contents. This is right for
3217 if (strcmp (current->name, _LIB) == 0)
3218 (void) bfd_set_section_vma (abfd, current, 0);
3221 #ifdef ALIGN_SECTIONS_IN_FILE
3226 /* It is now safe to write to the output file. If we needed an
3227 alignment adjustment for the last section, then make sure that
3228 there is a byte at offset sofar. If there are no symbols and no
3229 relocs, then nothing follows the last section. If we don't force
3230 the last byte out, then the file may appear to be truncated. */
3236 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
3237 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
3241 /* Make sure the relocations are aligned. We don't need to make
3242 sure that this byte exists, because it will only matter if there
3243 really are relocs. */
3244 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
3246 obj_relocbase (abfd) = sofar;
3247 abfd->output_has_begun = TRUE;
3252 #ifdef COFF_IMAGE_WITH_PE
3254 static unsigned int pelength;
3255 static unsigned int peheader;
3258 coff_read_word (bfd *abfd, unsigned int *value)
3263 status = bfd_bread (b, (bfd_size_type) 2, abfd);
3271 *value = (unsigned int) b[0];
3273 *value = (unsigned int) (b[0] + (b[1] << 8));
3275 pelength += (unsigned int) status;
3281 coff_compute_checksum (bfd *abfd)
3283 bfd_boolean more_data;
3290 filepos = (file_ptr) 0;
3294 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
3297 more_data = coff_read_word (abfd, &value);
3299 total = 0xffff & (total + (total >> 0x10));
3304 return (0xffff & (total + (total >> 0x10)));
3308 coff_apply_checksum (bfd *abfd)
3310 unsigned int computed;
3311 unsigned int checksum = 0;
3313 if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0)
3316 if (!coff_read_word (abfd, &peheader))
3319 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3323 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3325 if (bfd_seek (abfd, peheader, SEEK_SET) != 0)
3328 computed = coff_compute_checksum (abfd);
3330 checksum = computed + pelength;
3332 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3335 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3340 #endif /* COFF_IMAGE_WITH_PE */
3343 coff_write_object_contents (bfd * abfd)
3346 bfd_boolean hasrelocs = FALSE;
3347 bfd_boolean haslinno = FALSE;
3348 #ifdef COFF_IMAGE_WITH_PE
3349 bfd_boolean hasdebug = FALSE;
3352 file_ptr reloc_base;
3353 file_ptr lineno_base;
3355 unsigned long reloc_size = 0, reloc_count = 0;
3356 unsigned long lnno_size = 0;
3357 bfd_boolean long_section_names;
3358 asection *text_sec = NULL;
3359 asection *data_sec = NULL;
3360 asection *bss_sec = NULL;
3361 struct internal_filehdr internal_f;
3362 struct internal_aouthdr internal_a;
3363 #ifdef COFF_LONG_SECTION_NAMES
3364 size_t string_size = STRING_SIZE_SIZE;
3367 bfd_set_error (bfd_error_system_call);
3369 /* Make a pass through the symbol table to count line number entries and
3370 put them into the correct asections. */
3371 lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd);
3373 if (! abfd->output_has_begun)
3375 if (! coff_compute_section_file_positions (abfd))
3379 reloc_base = obj_relocbase (abfd);
3381 /* Work out the size of the reloc and linno areas. */
3383 for (current = abfd->sections; current != NULL; current =
3387 /* We store the actual reloc count in the first reloc's addr. */
3388 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3391 reloc_count += current->reloc_count;
3394 reloc_size = reloc_count * bfd_coff_relsz (abfd);
3396 lineno_base = reloc_base + reloc_size;
3397 sym_base = lineno_base + lnno_size;
3399 /* Indicate in each section->line_filepos its actual file address. */
3400 for (current = abfd->sections; current != NULL; current =
3403 if (current->lineno_count)
3405 current->line_filepos = lineno_base;
3406 current->moving_line_filepos = lineno_base;
3407 lineno_base += current->lineno_count * bfd_coff_linesz (abfd);
3410 current->line_filepos = 0;
3412 if (current->reloc_count)
3414 current->rel_filepos = reloc_base;
3415 reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
3417 /* Extra reloc to hold real count. */
3418 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3419 reloc_base += bfd_coff_relsz (abfd);
3423 current->rel_filepos = 0;
3426 /* Write section headers to the file. */
3427 internal_f.f_nscns = 0;
3429 if ((abfd->flags & EXEC_P) != 0)
3430 scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
3433 scn_base = bfd_coff_filhsz (abfd);
3436 if (xcoff_data (abfd)->full_aouthdr)
3437 scn_base += bfd_coff_aoutsz (abfd);
3439 scn_base += SMALL_AOUTSZ;
3444 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
3447 long_section_names = FALSE;
3448 for (current = abfd->sections;
3450 current = current->next)
3452 struct internal_scnhdr section;
3453 #ifdef COFF_IMAGE_WITH_PE
3454 bfd_boolean is_reloc_section = FALSE;
3456 if (strcmp (current->name, DOT_RELOC) == 0)
3458 is_reloc_section = TRUE;
3460 pe_data (abfd)->has_reloc_section = 1;
3464 internal_f.f_nscns++;
3466 strncpy (section.s_name, current->name, SCNNMLEN);
3468 #ifdef COFF_LONG_SECTION_NAMES
3469 /* Handle long section names as in PE. This must be compatible
3470 with the code in coff_write_symbols and _bfd_coff_final_link. */
3471 if (bfd_coff_long_section_names (abfd))
3475 len = strlen (current->name);
3478 /* The s_name field is defined to be NUL-padded but need not be
3479 NUL-terminated. We use a temporary buffer so that we can still
3480 sprintf all eight chars without splatting a terminating NUL
3481 over the first byte of the following member (s_paddr). */
3482 /* PR 21096: The +20 is to stop a bogus warning from gcc7 about
3483 a possible buffer overflow. */
3484 char s_name_buf[SCNNMLEN + 1 + 20];
3486 /* An inherent limitation of the /nnnnnnn notation used to indicate
3487 the offset of the long name in the string table is that we
3488 cannot address entries beyone the ten million byte boundary. */
3489 if (string_size >= 10000000)
3491 bfd_set_error (bfd_error_file_too_big);
3493 /* xgettext:c-format */
3494 (_("%pB: section %pA: string table overflow at offset %ld"),
3495 abfd, current, (unsigned long) string_size);
3499 /* We do not need to use snprintf here as we have already verfied
3500 that string_size is not too big, plus we have an overlarge
3501 buffer, just in case. */
3502 sprintf (s_name_buf, "/%lu", (unsigned long) string_size);
3503 /* Then strncpy takes care of any padding for us. */
3504 strncpy (section.s_name, s_name_buf, SCNNMLEN);
3505 string_size += len + 1;
3506 long_section_names = TRUE;
3512 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3513 Ian Taylor <ian@cygnus.com>. */
3514 if (strcmp (current->name, _LIB) == 0)
3515 section.s_vaddr = 0;
3518 section.s_vaddr = current->vma;
3519 section.s_paddr = current->lma;
3520 section.s_size = current->size;
3521 #ifdef coff_get_section_load_page
3522 section.s_page = coff_get_section_load_page (current);
3528 section.s_paddr = 0;
3530 #ifdef COFF_IMAGE_WITH_PE
3531 /* Reminder: s_paddr holds the virtual size of the section. */
3532 if (coff_section_data (abfd, current) != NULL
3533 && pei_section_data (abfd, current) != NULL)
3534 section.s_paddr = pei_section_data (abfd, current)->virt_size;
3536 section.s_paddr = 0;
3539 /* If this section has no size or is unloadable then the scnptr
3541 if (current->size == 0
3542 || (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
3543 section.s_scnptr = 0;
3545 section.s_scnptr = current->filepos;
3547 section.s_relptr = current->rel_filepos;
3548 section.s_lnnoptr = current->line_filepos;
3549 section.s_nreloc = current->reloc_count;
3550 section.s_nlnno = current->lineno_count;
3551 #ifndef COFF_IMAGE_WITH_PE
3552 /* In PEI, relocs come in the .reloc section. */
3553 if (current->reloc_count != 0)
3556 if (current->lineno_count != 0)
3558 #ifdef COFF_IMAGE_WITH_PE
3559 if ((current->flags & SEC_DEBUGGING) != 0
3560 && ! is_reloc_section)
3566 /* Indicate the use of an XCOFF overflow section header. */
3567 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3569 section.s_nreloc = 0xffff;
3570 section.s_nlnno = 0xffff;
3575 section.s_flags = sec_to_styp_flags (current->name, current->flags);
3577 if (!strcmp (current->name, _TEXT))
3579 else if (!strcmp (current->name, _DATA))
3581 else if (!strcmp (current->name, _BSS))
3584 #ifdef COFF_ENCODE_ALIGNMENT
3585 COFF_ENCODE_ALIGNMENT(section, current->alignment_power);
3586 if ((unsigned int)COFF_DECODE_ALIGNMENT(section.s_flags)
3587 != current->alignment_power)
3589 bfd_boolean warn = coff_data (abfd)->link_info
3590 && !bfd_link_relocatable (coff_data (abfd)->link_info);
3593 /* xgettext:c-format */
3594 (_("%pB:%s section %s: alignment 2**%u not representable"),
3595 abfd, warn ? " warning:" : "", current->name,
3596 current->alignment_power);
3599 bfd_set_error (bfd_error_nonrepresentable_section);
3605 #ifdef COFF_IMAGE_WITH_PE
3606 /* Suppress output of the sections if they are null. ld
3607 includes the bss and data sections even if there is no size
3608 assigned to them. NT loader doesn't like it if these section
3609 headers are included if the sections themselves are not
3610 needed. See also coff_compute_section_file_positions. */
3611 if (section.s_size == 0)
3612 internal_f.f_nscns--;
3617 bfd_size_type amt = bfd_coff_scnhsz (abfd);
3619 if (coff_swap_scnhdr_out (abfd, §ion, &buff) == 0
3620 || bfd_bwrite (& buff, amt, abfd) != amt)
3625 /* PE stores COMDAT section information in the symbol table. If
3626 this section is supposed to have some COMDAT info, track down
3627 the symbol in the symbol table and modify it. */
3628 if ((current->flags & SEC_LINK_ONCE) != 0)
3630 unsigned int i, count;
3632 coff_symbol_type *csym = NULL;
3636 count = bfd_get_symcount (abfd);
3637 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
3639 if ((*psym)->section != current)
3642 /* Remember the location of the first symbol in this
3644 if (psymsec == NULL)
3647 /* See if this is the section symbol. */
3648 if (strcmp ((*psym)->name, current->name) == 0)
3650 csym = coff_symbol_from (*psym);
3652 || csym->native == NULL
3653 || ! csym->native->is_sym
3654 || csym->native->u.syment.n_numaux < 1
3655 || csym->native->u.syment.n_sclass != C_STAT
3656 || csym->native->u.syment.n_type != T_NULL)
3659 /* Here *PSYM is the section symbol for CURRENT. */
3666 Note that we might not if we're converting the file from
3667 some other object file format. */
3670 combined_entry_type *aux;
3672 /* We don't touch the x_checksum field. The
3673 x_associated field is not currently supported. */
3675 aux = csym->native + 1;
3676 BFD_ASSERT (! aux->is_sym);
3677 switch (current->flags & SEC_LINK_DUPLICATES)
3679 case SEC_LINK_DUPLICATES_DISCARD:
3680 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
3683 case SEC_LINK_DUPLICATES_ONE_ONLY:
3684 aux->u.auxent.x_scn.x_comdat =
3685 IMAGE_COMDAT_SELECT_NODUPLICATES;
3688 case SEC_LINK_DUPLICATES_SAME_SIZE:
3689 aux->u.auxent.x_scn.x_comdat =
3690 IMAGE_COMDAT_SELECT_SAME_SIZE;
3693 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
3694 aux->u.auxent.x_scn.x_comdat =
3695 IMAGE_COMDAT_SELECT_EXACT_MATCH;
3699 /* The COMDAT symbol must be the first symbol from this
3700 section in the symbol table. In order to make this
3701 work, we move the COMDAT symbol before the first
3702 symbol we found in the search above. It's OK to
3703 rearrange the symbol table at this point, because
3704 coff_renumber_symbols is going to rearrange it
3705 further and fix up all the aux entries. */
3706 if (psym != psymsec)
3712 for (pcopy = psym; pcopy > psymsec; pcopy--)
3713 pcopy[0] = pcopy[-1];
3718 #endif /* COFF_WITH_PE */
3723 /* XCOFF handles overflows in the reloc and line number count fields
3724 by creating a new section header to hold the correct values. */
3725 for (current = abfd->sections; current != NULL; current = current->next)
3727 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3729 struct internal_scnhdr scnhdr;
3733 internal_f.f_nscns++;
3734 memcpy (scnhdr.s_name, ".ovrflo", 8);
3735 scnhdr.s_paddr = current->reloc_count;
3736 scnhdr.s_vaddr = current->lineno_count;
3738 scnhdr.s_scnptr = 0;
3739 scnhdr.s_relptr = current->rel_filepos;
3740 scnhdr.s_lnnoptr = current->line_filepos;
3741 scnhdr.s_nreloc = current->target_index;
3742 scnhdr.s_nlnno = current->target_index;
3743 scnhdr.s_flags = STYP_OVRFLO;
3744 amt = bfd_coff_scnhsz (abfd);
3745 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
3746 || bfd_bwrite (& buff, amt, abfd) != amt)
3753 /* OK, now set up the filehdr... */
3755 /* Don't include the internal abs section in the section count */
3757 /* We will NOT put a fucking timestamp in the header here. Every time you
3758 put it back, I will come in and take it out again. I'm sorry. This
3759 field does not belong here. We fill it with a 0 so it compares the
3760 same but is not a reasonable time. -- gnu@cygnus.com */
3761 internal_f.f_timdat = 0;
3762 internal_f.f_flags = 0;
3764 if (abfd->flags & EXEC_P)
3765 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3768 internal_f.f_opthdr = 0;
3771 if (xcoff_data (abfd)->full_aouthdr)
3772 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3774 internal_f.f_opthdr = SMALL_AOUTSZ;
3780 internal_f.f_flags |= F_RELFLG;
3782 internal_f.f_flags |= F_LNNO;
3783 if (abfd->flags & EXEC_P)
3784 internal_f.f_flags |= F_EXEC;
3785 #ifdef COFF_IMAGE_WITH_PE
3787 internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED;
3788 if (pe_data (abfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE)
3789 internal_f.f_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
3792 #ifndef COFF_WITH_pex64
3794 internal_f.f_flags |= IMAGE_FILE_32BIT_MACHINE;
3796 if (bfd_little_endian (abfd))
3797 internal_f.f_flags |= F_AR32WR;
3799 internal_f.f_flags |= F_AR32W;
3804 /* Target id is used in TI COFF v1 and later; COFF0 won't use this field,
3805 but it doesn't hurt to set it internally. */
3806 internal_f.f_target_id = TI_TARGET_ID;
3808 #ifdef TIC80_TARGET_ID
3809 internal_f.f_target_id = TIC80_TARGET_ID;
3812 /* FIXME, should do something about the other byte orders and
3816 if ((abfd->flags & DYNAMIC) != 0)
3817 internal_f.f_flags |= F_SHROBJ;
3818 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
3819 internal_f.f_flags |= F_DYNLOAD;
3822 memset (&internal_a, 0, sizeof internal_a);
3824 /* Set up architecture-dependent stuff. */
3826 unsigned int magic = 0;
3827 unsigned short flags = 0;
3829 coff_set_flags (abfd, &magic, &flags);
3830 internal_f.f_magic = magic;
3831 internal_f.f_flags |= flags;
3832 /* ...and the "opt"hdr... */
3834 #ifdef TICOFF_AOUT_MAGIC
3835 internal_a.magic = TICOFF_AOUT_MAGIC;
3836 #define __A_MAGIC_SET__
3839 internal_a.magic = TIC80_ARCH_MAGIC;
3840 #define __A_MAGIC_SET__
3844 #define __A_MAGIC_SET__
3845 internal_a.magic = ZMAGIC;
3849 #define __A_MAGIC_SET__
3850 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3853 #if defined MCORE_PE
3854 #define __A_MAGIC_SET__
3855 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3859 #define __A_MAGIC_SET__
3861 internal_a.magic = LYNXCOFFMAGIC;
3863 internal_a.magic = IMAGE_NT_OPTIONAL_HDR64_MAGIC;
3865 internal_a.magic = ZMAGIC;
3870 #define __A_MAGIC_SET__
3871 internal_a.magic = PE32PMAGIC;
3875 #define __A_MAGIC_SET__
3877 internal_a.magic = LYNXCOFFMAGIC;
3882 #define __A_MAGIC_SET__
3883 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
3884 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
3885 RS6K_AOUTHDR_OMAGIC;
3888 #if defined(SH) && defined(COFF_WITH_PE)
3889 #define __A_MAGIC_SET__
3890 internal_a.magic = SH_PE_MAGIC;
3893 #if defined(MIPS) && defined(COFF_WITH_PE)
3894 #define __A_MAGIC_SET__
3895 internal_a.magic = MIPS_PE_MAGIC;
3898 #ifndef __A_MAGIC_SET__
3899 #include "Your aouthdr magic number is not being set!"
3901 #undef __A_MAGIC_SET__
3905 /* FIXME: Does anybody ever set this to another value? */
3906 internal_a.vstamp = 0;
3908 /* Now should write relocs, strings, syms. */
3909 obj_sym_filepos (abfd) = sym_base;
3911 if (bfd_get_symcount (abfd) != 0)
3915 if (!coff_renumber_symbols (abfd, &firstundef))
3917 coff_mangle_symbols (abfd);
3918 if (! coff_write_symbols (abfd))
3920 if (! coff_write_linenumbers (abfd))
3922 if (! coff_write_relocs (abfd, firstundef))
3925 #ifdef COFF_LONG_SECTION_NAMES
3926 else if (long_section_names && ! obj_coff_strings_written (abfd))
3928 /* If we have long section names we have to write out the string
3929 table even if there are no symbols. */
3930 if (! coff_write_symbols (abfd))
3934 #ifdef COFF_IMAGE_WITH_PE
3936 else if ((abfd->flags & EXEC_P) != 0)
3940 /* PowerPC PE appears to require that all executable files be
3941 rounded up to the page size. */
3944 (file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
3946 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
3952 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
3953 backend linker, and obj_raw_syment_count is not valid until after
3954 coff_write_symbols is called. */
3955 if (obj_raw_syment_count (abfd) != 0)
3957 internal_f.f_symptr = sym_base;
3959 /* AIX appears to require that F_RELFLG not be set if there are
3960 local symbols but no relocations. */
3961 internal_f.f_flags &=~ F_RELFLG;
3966 if (long_section_names)
3967 internal_f.f_symptr = sym_base;
3969 internal_f.f_symptr = 0;
3970 internal_f.f_flags |= F_LSYMS;
3975 internal_a.tsize = text_sec->size;
3976 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
3980 internal_a.dsize = data_sec->size;
3981 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
3985 internal_a.bsize = bss_sec->size;
3986 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
3987 internal_a.data_start = bss_sec->vma;
3990 internal_a.entry = bfd_get_start_address (abfd);
3991 internal_f.f_nsyms = obj_raw_syment_count (abfd);
3994 if (xcoff_data (abfd)->full_aouthdr)
3997 asection *loader_sec;
3999 internal_a.vstamp = 1;
4001 internal_a.o_snentry = xcoff_data (abfd)->snentry;
4002 if (internal_a.o_snentry == 0)
4003 internal_a.entry = (bfd_vma) -1;
4005 if (text_sec != NULL)
4007 internal_a.o_sntext = text_sec->target_index;
4008 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
4012 internal_a.o_sntext = 0;
4013 internal_a.o_algntext = 0;
4015 if (data_sec != NULL)
4017 internal_a.o_sndata = data_sec->target_index;
4018 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
4022 internal_a.o_sndata = 0;
4023 internal_a.o_algndata = 0;
4025 loader_sec = bfd_get_section_by_name (abfd, ".loader");
4026 if (loader_sec != NULL)
4027 internal_a.o_snloader = loader_sec->target_index;
4029 internal_a.o_snloader = 0;
4030 if (bss_sec != NULL)
4031 internal_a.o_snbss = bss_sec->target_index;
4033 internal_a.o_snbss = 0;
4035 toc = xcoff_data (abfd)->toc;
4036 internal_a.o_toc = toc;
4037 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
4039 internal_a.o_modtype = xcoff_data (abfd)->modtype;
4040 if (xcoff_data (abfd)->cputype != -1)
4041 internal_a.o_cputype = xcoff_data (abfd)->cputype;
4044 switch (bfd_get_arch (abfd))
4046 case bfd_arch_rs6000:
4047 internal_a.o_cputype = 4;
4049 case bfd_arch_powerpc:
4050 if (bfd_get_mach (abfd) == bfd_mach_ppc)
4051 internal_a.o_cputype = 3;
4053 internal_a.o_cputype = 1;
4059 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
4060 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
4066 /* After object contents are finalized so we can compute a reasonable hash,
4067 but before header is written so we can update it to point to debug directory. */
4068 struct pe_tdata *pe = pe_data (abfd);
4070 if (pe->build_id.after_write_object_contents != NULL)
4071 (*pe->build_id.after_write_object_contents) (abfd);
4075 /* Now write header. */
4076 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
4081 bfd_size_type amount = bfd_coff_filhsz (abfd);
4083 buff = (char *) bfd_malloc (amount);
4087 bfd_coff_swap_filehdr_out (abfd, & internal_f, buff);
4088 amount = bfd_bwrite (buff, amount, abfd);
4092 if (amount != bfd_coff_filhsz (abfd))
4096 if (abfd->flags & EXEC_P)
4098 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
4099 include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)). */
4101 bfd_size_type amount = bfd_coff_aoutsz (abfd);
4103 buff = (char *) bfd_malloc (amount);
4107 coff_swap_aouthdr_out (abfd, & internal_a, buff);
4108 amount = bfd_bwrite (buff, amount, abfd);
4112 if (amount != bfd_coff_aoutsz (abfd))
4115 #ifdef COFF_IMAGE_WITH_PE
4116 if (! coff_apply_checksum (abfd))
4126 /* XCOFF seems to always write at least a small a.out header. */
4127 coff_swap_aouthdr_out (abfd, & internal_a, & buff);
4128 if (xcoff_data (abfd)->full_aouthdr)
4129 size = bfd_coff_aoutsz (abfd);
4131 size = SMALL_AOUTSZ;
4132 if (bfd_bwrite (& buff, (bfd_size_type) size, abfd) != size)
4141 coff_set_section_contents (bfd * abfd,
4143 const void * location,
4145 bfd_size_type count)
4147 if (! abfd->output_has_begun) /* Set by bfd.c handler. */
4149 if (! coff_compute_section_file_positions (abfd))
4153 #if defined(_LIB) && !defined(TARG_AUX)
4154 /* The physical address field of a .lib section is used to hold the
4155 number of shared libraries in the section. This code counts the
4156 number of sections being written, and increments the lma field
4159 I have found no documentation on the contents of this section.
4160 Experimentation indicates that the section contains zero or more
4161 records, each of which has the following structure:
4163 - a (four byte) word holding the length of this record, in words,
4164 - a word that always seems to be set to "2",
4165 - the path to a shared library, null-terminated and then padded
4166 to a whole word boundary.
4168 bfd_assert calls have been added to alert if an attempt is made
4169 to write a section which doesn't follow these assumptions. The
4170 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4171 <robertl@arnet.com> (Thanks!).
4173 Gvran Uddeborg <gvran@uddeborg.pp.se>. */
4174 if (strcmp (section->name, _LIB) == 0)
4176 bfd_byte *rec, *recend;
4178 rec = (bfd_byte *) location;
4179 recend = rec + count;
4180 while (rec < recend)
4183 rec += bfd_get_32 (abfd, rec) * 4;
4186 BFD_ASSERT (rec == recend);
4190 /* Don't write out bss sections - one way to do this is to
4191 see if the filepos has not been set. */
4192 if (section->filepos == 0)
4195 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
4201 return bfd_bwrite (location, count, abfd) == count;
4205 buy_and_read (bfd *abfd, file_ptr where, bfd_size_type size)
4207 void * area = bfd_alloc (abfd, size);
4211 if (bfd_seek (abfd, where, SEEK_SET) != 0
4212 || bfd_bread (area, size, abfd) != size)
4221 Creating the linenumber table is done by reading in the entire
4222 coff linenumber table, and creating another table for internal use.
4224 A coff linenumber table is structured so that each function
4225 is marked as having a line number of 0. Each line within the
4226 function is an offset from the first line in the function. The
4227 base of the line number information for the table is stored in
4228 the symbol associated with the function.
4230 Note: The PE format uses line number 0 for a flag indicating a
4233 The information is copied from the external to the internal
4234 table, and each symbol which marks a function is marked by
4237 How does this work ?
4241 coff_sort_func_alent (const void * arg1, const void * arg2)
4243 const alent *al1 = *(const alent **) arg1;
4244 const alent *al2 = *(const alent **) arg2;
4245 const coff_symbol_type *s1 = (const coff_symbol_type *) (al1->u.sym);
4246 const coff_symbol_type *s2 = (const coff_symbol_type *) (al2->u.sym);
4248 if (s1 == NULL || s2 == NULL)
4250 if (s1->symbol.value < s2->symbol.value)
4252 else if (s1->symbol.value > s2->symbol.value)
4259 coff_slurp_line_table (bfd *abfd, asection *asect)
4261 LINENO *native_lineno;
4262 alent *lineno_cache;
4264 unsigned int counter;
4266 bfd_vma prev_offset = 0;
4267 bfd_boolean ordered = TRUE;
4268 unsigned int nbr_func;
4270 bfd_boolean have_func;
4271 bfd_boolean ret = TRUE;
4273 if (asect->lineno_count == 0)
4276 BFD_ASSERT (asect->lineno == NULL);
4278 if (asect->lineno_count > asect->size)
4281 (_("%pB: warning: line number count (%#lx) exceeds section size (%#lx)"),
4282 abfd, (unsigned long) asect->lineno_count, (unsigned long) asect->size);
4286 amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent);
4287 lineno_cache = (alent *) bfd_alloc (abfd, amt);
4288 if (lineno_cache == NULL)
4291 amt = (bfd_size_type) bfd_coff_linesz (abfd) * asect->lineno_count;
4292 native_lineno = (LINENO *) buy_and_read (abfd, asect->line_filepos, amt);
4293 if (native_lineno == NULL)
4296 (_("%pB: warning: line number table read failed"), abfd);
4297 bfd_release (abfd, lineno_cache);
4301 cache_ptr = lineno_cache;
4302 asect->lineno = lineno_cache;
4303 src = native_lineno;
4307 for (counter = 0; counter < asect->lineno_count; counter++, src++)
4309 struct internal_lineno dst;
4311 bfd_coff_swap_lineno_in (abfd, src, &dst);
4312 cache_ptr->line_number = dst.l_lnno;
4313 /* Appease memory checkers that get all excited about
4314 uninitialised memory when copying alents if u.offset is
4315 larger than u.sym. (64-bit BFD on 32-bit host.) */
4316 memset (&cache_ptr->u, 0, sizeof (cache_ptr->u));
4318 if (cache_ptr->line_number == 0)
4320 combined_entry_type * ent;
4321 unsigned long symndx;
4322 coff_symbol_type *sym;
4325 symndx = dst.l_addr.l_symndx;
4326 if (symndx >= obj_raw_syment_count (abfd))
4329 /* xgettext:c-format */
4330 (_("%pB: warning: illegal symbol index 0x%lx in line number entry %d"),
4331 abfd, symndx, counter);
4332 cache_ptr->line_number = -1;
4337 ent = obj_raw_syments (abfd) + symndx;
4338 /* FIXME: We should not be casting between ints and
4339 pointers like this. */
4343 /* xgettext:c-format */
4344 (_("%pB: warning: illegal symbol index 0x%lx in line number entry %d"),
4345 abfd, symndx, counter);
4346 cache_ptr->line_number = -1;
4350 sym = (coff_symbol_type *) (ent->u.syment._n._n_n._n_zeroes);
4352 /* PR 17512 file: 078-10659-0.004 */
4353 if (sym < obj_symbols (abfd)
4354 || sym >= obj_symbols (abfd) + bfd_get_symcount (abfd))
4357 /* xgettext:c-format */
4358 (_("%pB: warning: illegal symbol in line number entry %d"),
4360 cache_ptr->line_number = -1;
4367 cache_ptr->u.sym = (asymbol *) sym;
4368 if (sym->lineno != NULL)
4370 /* xgettext:c-format */
4371 (_("%pB: warning: duplicate line number information for `%s'"),
4372 abfd, bfd_asymbol_name (&sym->symbol));
4374 sym->lineno = cache_ptr;
4375 if (sym->symbol.value < prev_offset)
4377 prev_offset = sym->symbol.value;
4379 else if (!have_func)
4380 /* Drop line information that has no associated function.
4381 PR 17521: file: 078-10659-0.004. */
4384 cache_ptr->u.offset = (dst.l_addr.l_paddr
4385 - bfd_section_vma (abfd, asect));
4389 asect->lineno_count = cache_ptr - lineno_cache;
4390 memset (cache_ptr, 0, sizeof (*cache_ptr));
4391 bfd_release (abfd, native_lineno);
4393 /* On some systems (eg AIX5.3) the lineno table may not be sorted. */
4396 /* Sort the table. */
4398 alent *n_lineno_cache;
4400 /* Create a table of functions. */
4401 func_table = (alent **) bfd_alloc (abfd, nbr_func * sizeof (alent *));
4402 if (func_table != NULL)
4404 alent **p = func_table;
4407 for (i = 0; i < asect->lineno_count; i++)
4408 if (lineno_cache[i].line_number == 0)
4409 *p++ = &lineno_cache[i];
4411 BFD_ASSERT ((unsigned int) (p - func_table) == nbr_func);
4413 /* Sort by functions. */
4414 qsort (func_table, nbr_func, sizeof (alent *), coff_sort_func_alent);
4416 /* Create the new sorted table. */
4417 amt = (bfd_size_type) asect->lineno_count * sizeof (alent);
4418 n_lineno_cache = (alent *) bfd_alloc (abfd, amt);
4419 if (n_lineno_cache != NULL)
4421 alent *n_cache_ptr = n_lineno_cache;
4423 for (i = 0; i < nbr_func; i++)
4425 coff_symbol_type *sym;
4426 alent *old_ptr = func_table[i];
4428 /* Update the function entry. */
4429 sym = (coff_symbol_type *) old_ptr->u.sym;
4430 /* PR binutils/17512: Point the lineno to where
4431 this entry will be after the memcpy below. */
4432 sym->lineno = lineno_cache + (n_cache_ptr - n_lineno_cache);
4433 /* Copy the function and line number entries. */
4435 *n_cache_ptr++ = *old_ptr++;
4436 while (old_ptr->line_number != 0);
4438 BFD_ASSERT ((bfd_size_type) (n_cache_ptr - n_lineno_cache) == (amt / sizeof (alent)));
4440 memcpy (lineno_cache, n_lineno_cache, amt);
4444 bfd_release (abfd, func_table);
4453 /* Slurp in the symbol table, converting it to generic form. Note
4454 that if coff_relocate_section is defined, the linker will read
4455 symbols via coff_link_add_symbols, rather than via this routine. */
4458 coff_slurp_symbol_table (bfd * abfd)
4460 combined_entry_type *native_symbols;
4461 coff_symbol_type *cached_area;
4462 unsigned int *table_ptr;
4464 unsigned int number_of_symbols = 0;
4465 bfd_boolean ret = TRUE;
4467 if (obj_symbols (abfd))
4470 /* Read in the symbol table. */
4471 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
4474 /* Allocate enough room for all the symbols in cached form. */
4475 amt = obj_raw_syment_count (abfd);
4476 amt *= sizeof (coff_symbol_type);
4477 cached_area = (coff_symbol_type *) bfd_alloc (abfd, amt);
4478 if (cached_area == NULL)
4481 amt = obj_raw_syment_count (abfd);
4482 amt *= sizeof (unsigned int);
4483 table_ptr = (unsigned int *) bfd_zalloc (abfd, amt);
4485 if (table_ptr == NULL)
4489 coff_symbol_type *dst = cached_area;
4490 unsigned int last_native_index = obj_raw_syment_count (abfd);
4491 unsigned int this_index = 0;
4493 while (this_index < last_native_index)
4495 combined_entry_type *src = native_symbols + this_index;
4496 table_ptr[this_index] = number_of_symbols;
4498 dst->symbol.the_bfd = abfd;
4499 BFD_ASSERT (src->is_sym);
4500 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
4501 /* We use the native name field to point to the cached field. */
4502 src->u.syment._n._n_n._n_zeroes = (bfd_hostptr_t) dst;
4503 dst->symbol.section = coff_section_from_bfd_index (abfd,
4504 src->u.syment.n_scnum);
4505 dst->symbol.flags = 0;
4506 /* PR 17512: file: 079-7098-0.001:0.1. */
4507 dst->symbol.value = 0;
4508 dst->done_lineno = FALSE;
4510 switch (src->u.syment.n_sclass)
4516 case C_THUMBEXTFUNC:
4520 #if ! defined _AIX52 && ! defined AIX_WEAK_SUPPORT
4525 case C_SYSTEM: /* System Wide variable. */
4528 /* In PE, 0x68 (104) denotes a section symbol. */
4530 /* In PE, 0x69 (105) denotes a weak external symbol. */
4533 switch (coff_classify_symbol (abfd, &src->u.syment))
4535 case COFF_SYMBOL_GLOBAL:
4536 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4537 #if defined COFF_WITH_PE
4538 /* PE sets the symbol to a value relative to the
4539 start of the section. */
4540 dst->symbol.value = src->u.syment.n_value;
4542 dst->symbol.value = (src->u.syment.n_value
4543 - dst->symbol.section->vma);
4545 if (ISFCN ((src->u.syment.n_type)))
4546 /* A function ext does not go at the end of a
4548 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4551 case COFF_SYMBOL_COMMON:
4552 dst->symbol.section = bfd_com_section_ptr;
4553 dst->symbol.value = src->u.syment.n_value;
4556 case COFF_SYMBOL_UNDEFINED:
4557 dst->symbol.section = bfd_und_section_ptr;
4558 dst->symbol.value = 0;
4561 case COFF_SYMBOL_PE_SECTION:
4562 dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM;
4563 dst->symbol.value = 0;
4566 case COFF_SYMBOL_LOCAL:
4567 dst->symbol.flags = BSF_LOCAL;
4568 #if defined COFF_WITH_PE
4569 /* PE sets the symbol to a value relative to the
4570 start of the section. */
4571 dst->symbol.value = src->u.syment.n_value;
4573 dst->symbol.value = (src->u.syment.n_value
4574 - dst->symbol.section->vma);
4576 if (ISFCN ((src->u.syment.n_type)))
4577 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4582 /* A symbol with a csect entry should not go at the end. */
4583 if (src->u.syment.n_numaux > 0)
4584 dst->symbol.flags |= BSF_NOT_AT_END;
4588 if (src->u.syment.n_sclass == C_NT_WEAK)
4589 dst->symbol.flags |= BSF_WEAK;
4591 if (src->u.syment.n_sclass == C_SECTION
4592 && src->u.syment.n_scnum > 0)
4593 dst->symbol.flags = BSF_LOCAL;
4595 if (src->u.syment.n_sclass == C_WEAKEXT
4597 || src->u.syment.n_sclass == C_AIX_WEAKEXT
4600 dst->symbol.flags |= BSF_WEAK;
4604 case C_STAT: /* Static. */
4606 case C_THUMBSTAT: /* Thumb static. */
4607 case C_THUMBLABEL: /* Thumb label. */
4608 case C_THUMBSTATFUNC:/* Thumb static function. */
4611 case C_DWARF: /* A label in a dwarf section. */
4612 case C_INFO: /* A label in a comment section. */
4614 case C_LABEL: /* Label. */
4615 if (src->u.syment.n_scnum == N_DEBUG)
4616 dst->symbol.flags = BSF_DEBUGGING;
4618 dst->symbol.flags = BSF_LOCAL;
4620 /* Base the value as an index from the base of the
4621 section, if there is one. */
4622 if (dst->symbol.section)
4624 #if defined COFF_WITH_PE
4625 /* PE sets the symbol to a value relative to the
4626 start of the section. */
4627 dst->symbol.value = src->u.syment.n_value;
4629 dst->symbol.value = (src->u.syment.n_value
4630 - dst->symbol.section->vma);
4634 dst->symbol.value = src->u.syment.n_value;
4637 case C_MOS: /* Member of structure. */
4638 case C_EOS: /* End of structure. */
4639 case C_REGPARM: /* Register parameter. */
4640 case C_REG: /* register variable. */
4641 /* C_AUTOARG conflicts with TI COFF C_UEXT. */
4642 case C_TPDEF: /* Type definition. */
4644 case C_AUTO: /* Automatic variable. */
4645 case C_FIELD: /* Bit field. */
4646 case C_ENTAG: /* Enumeration tag. */
4647 case C_MOE: /* Member of enumeration. */
4648 case C_MOU: /* Member of union. */
4649 case C_UNTAG: /* Union tag. */
4650 dst->symbol.flags = BSF_DEBUGGING;
4651 dst->symbol.value = (src->u.syment.n_value);
4654 case C_FILE: /* File name. */
4655 case C_STRTAG: /* Structure tag. */
4672 dst->symbol.flags = BSF_DEBUGGING;
4673 dst->symbol.value = (src->u.syment.n_value);
4677 case C_BINCL: /* Beginning of include file. */
4678 case C_EINCL: /* Ending of include file. */
4679 /* The value is actually a pointer into the line numbers
4680 of the file. We locate the line number entry, and
4681 set the section to the section which contains it, and
4682 the value to the index in that section. */
4686 dst->symbol.flags = BSF_DEBUGGING;
4687 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4688 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
4689 && ((file_ptr) (sec->line_filepos
4690 + sec->lineno_count * bfd_coff_linesz (abfd))
4691 > (file_ptr) src->u.syment.n_value))
4694 dst->symbol.value = 0;
4697 dst->symbol.section = sec;
4698 dst->symbol.value = ((src->u.syment.n_value
4699 - sec->line_filepos)
4700 / bfd_coff_linesz (abfd));
4707 dst->symbol.flags = BSF_DEBUGGING;
4709 /* The value is actually a symbol index. Save a pointer
4710 to the symbol instead of the index. FIXME: This
4711 should use a union. */
4712 src->u.syment.n_value =
4713 (long) (intptr_t) (native_symbols + src->u.syment.n_value);
4714 dst->symbol.value = src->u.syment.n_value;
4719 case C_BLOCK: /* ".bb" or ".eb". */
4720 case C_FCN: /* ".bf" or ".ef" (or PE ".lf"). */
4721 case C_EFCN: /* Physical end of function. */
4722 #if defined COFF_WITH_PE
4723 /* PE sets the symbol to a value relative to the start
4725 dst->symbol.value = src->u.syment.n_value;
4726 if (strcmp (dst->symbol.name, ".bf") != 0)
4728 /* PE uses funny values for .ef and .lf; don't
4730 dst->symbol.flags = BSF_DEBUGGING;
4733 dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC;
4735 /* Base the value as an index from the base of the
4737 dst->symbol.flags = BSF_LOCAL;
4738 dst->symbol.value = (src->u.syment.n_value
4739 - dst->symbol.section->vma);
4743 case C_STATLAB: /* Static load time label. */
4744 dst->symbol.value = src->u.syment.n_value;
4745 dst->symbol.flags = BSF_GLOBAL;
4749 /* PE DLLs sometimes have zeroed out symbols for some
4750 reason. Just ignore them without a warning. */
4751 if (src->u.syment.n_type == 0
4752 && src->u.syment.n_value == 0
4753 && src->u.syment.n_scnum == 0)
4756 /* XCOFF specific: deleted entry. */
4757 if (src->u.syment.n_value == C_NULL_VALUE)
4761 case C_EXTDEF: /* External definition. */
4762 case C_ULABEL: /* Undefined label. */
4763 case C_USTATIC: /* Undefined static. */
4764 #ifndef COFF_WITH_PE
4765 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4766 class to represent a section symbol. */
4767 case C_LINE: /* line # reformatted as symbol table entry. */
4768 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4769 case C_ALIAS: /* Duplicate tag. */
4771 /* New storage classes for TI COFF. */
4772 #if defined(TIC80COFF) || defined(TICOFF)
4773 case C_UEXT: /* Tentative external definition. */
4775 case C_EXTLAB: /* External load time label. */
4778 /* xgettext:c-format */
4779 (_("%pB: unrecognized storage class %d for %s symbol `%s'"),
4780 abfd, src->u.syment.n_sclass,
4781 dst->symbol.section->name, dst->symbol.name);
4784 case C_HIDDEN: /* Ext symbol in dmert public lib. */
4785 /* PR 20722: These symbols can also be generated by
4786 building DLLs with --gc-sections enabled. */
4787 dst->symbol.flags = BSF_DEBUGGING;
4788 dst->symbol.value = (src->u.syment.n_value);
4793 dst->symbol.udata.i = 0;
4796 this_index += (src->u.syment.n_numaux) + 1;
4798 number_of_symbols++;
4802 obj_symbols (abfd) = cached_area;
4803 obj_raw_syments (abfd) = native_symbols;
4805 bfd_get_symcount (abfd) = number_of_symbols;
4806 obj_convert (abfd) = table_ptr;
4807 /* Slurp the line tables for each section too. */
4814 if (! coff_slurp_line_table (abfd, p))
4823 /* Classify a COFF symbol. A couple of targets have globally visible
4824 symbols which are not class C_EXT, and this handles those. It also
4825 recognizes some special PE cases. */
4827 static enum coff_symbol_classification
4828 coff_classify_symbol (bfd *abfd,
4829 struct internal_syment *syment)
4831 /* FIXME: This partially duplicates the switch in
4832 coff_slurp_symbol_table. */
4833 switch (syment->n_sclass)
4839 case C_THUMBEXTFUNC:
4847 if (syment->n_scnum == 0)
4849 if (syment->n_value == 0)
4850 return COFF_SYMBOL_UNDEFINED;
4852 return COFF_SYMBOL_COMMON;
4854 return COFF_SYMBOL_GLOBAL;
4861 if (syment->n_sclass == C_STAT)
4863 if (syment->n_scnum == 0)
4864 /* The Microsoft compiler sometimes generates these if a
4865 small static function is inlined every time it is used.
4866 The function is discarded, but the symbol table entry
4868 return COFF_SYMBOL_LOCAL;
4870 #ifdef STRICT_PE_FORMAT
4871 /* This is correct for Microsoft generated objects, but it
4872 breaks gas generated objects. */
4873 if (syment->n_value == 0)
4877 char buf[SYMNMLEN + 1];
4879 name = _bfd_coff_internal_syment_name (abfd, syment, buf)
4880 sec = coff_section_from_bfd_index (abfd, syment->n_scnum);
4881 if (sec != NULL && name != NULL
4882 && (strcmp (bfd_get_section_name (abfd, sec), name) == 0))
4883 return COFF_SYMBOL_PE_SECTION;
4887 return COFF_SYMBOL_LOCAL;
4890 if (syment->n_sclass == C_SECTION)
4892 /* In some cases in a DLL generated by the Microsoft linker, the
4893 n_value field will contain garbage. FIXME: This should
4894 probably be handled by the swapping function instead. */
4895 syment->n_value = 0;
4896 if (syment->n_scnum == 0)
4897 return COFF_SYMBOL_UNDEFINED;
4898 return COFF_SYMBOL_PE_SECTION;
4900 #endif /* COFF_WITH_PE */
4902 /* If it is not a global symbol, we presume it is a local symbol. */
4903 if (syment->n_scnum == 0)
4905 char buf[SYMNMLEN + 1];
4908 /* xgettext:c-format */
4909 (_("warning: %pB: local symbol `%s' has no section"),
4910 abfd, _bfd_coff_internal_syment_name (abfd, syment, buf));
4913 return COFF_SYMBOL_LOCAL;
4920 Coff relocations are easily transformed into the internal BFD form
4923 Reading a coff relocation table is done in the following stages:
4925 o Read the entire coff relocation table into memory.
4927 o Process each relocation in turn; first swap it from the
4928 external to the internal form.
4930 o Turn the symbol referenced in the relocation's symbol index
4931 into a pointer into the canonical symbol table.
4932 This table is the same as the one returned by a call to
4933 @code{bfd_canonicalize_symtab}. The back end will call that
4934 routine and save the result if a canonicalization hasn't been done.
4936 o The reloc index is turned into a pointer to a howto
4937 structure, in a back end specific way. For instance, the 386
4938 uses the @code{r_type} to directly produce an index
4939 into a howto table vector.
4943 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
4945 coff_symbol_type *coffsym = NULL; \
4947 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
4948 coffsym = (obj_symbols (abfd) \
4949 + (cache_ptr->sym_ptr_ptr - symbols)); \
4951 coffsym = coff_symbol_from (ptr); \
4952 if (coffsym != NULL \
4953 && coffsym->native->is_sym \
4954 && coffsym->native->u.syment.n_scnum == 0) \
4955 cache_ptr->addend = 0; \
4956 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
4957 && ptr->section != NULL) \
4958 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
4960 cache_ptr->addend = 0; \
4965 coff_slurp_reloc_table (bfd * abfd, sec_ptr asect, asymbol ** symbols)
4967 RELOC *native_relocs;
4968 arelent *reloc_cache;
4973 if (asect->relocation)
4975 if (asect->reloc_count == 0)
4977 if (asect->flags & SEC_CONSTRUCTOR)
4979 if (!coff_slurp_symbol_table (abfd))
4982 amt = (bfd_size_type) bfd_coff_relsz (abfd) * asect->reloc_count;
4983 native_relocs = (RELOC *) buy_and_read (abfd, asect->rel_filepos, amt);
4984 amt = (bfd_size_type) asect->reloc_count * sizeof (arelent);
4985 reloc_cache = (arelent *) bfd_alloc (abfd, amt);
4987 if (reloc_cache == NULL || native_relocs == NULL)
4990 for (idx = 0; idx < asect->reloc_count; idx++)
4992 struct internal_reloc dst;
4993 struct external_reloc *src;
4994 #ifndef RELOC_PROCESSING
4998 cache_ptr = reloc_cache + idx;
4999 src = native_relocs + idx;
5002 coff_swap_reloc_in (abfd, src, &dst);
5004 #ifdef RELOC_PROCESSING
5005 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
5007 cache_ptr->address = dst.r_vaddr;
5009 if (dst.r_symndx != -1 && symbols != NULL)
5011 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
5014 /* xgettext:c-format */
5015 (_("%pB: warning: illegal symbol index %ld in relocs"),
5016 abfd, dst.r_symndx);
5017 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5022 cache_ptr->sym_ptr_ptr = (symbols
5023 + obj_convert (abfd)[dst.r_symndx]);
5024 ptr = *(cache_ptr->sym_ptr_ptr);
5029 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5033 /* The symbols definitions that we have read in have been
5034 relocated as if their sections started at 0. But the offsets
5035 refering to the symbols in the raw data have not been
5036 modified, so we have to have a negative addend to compensate.
5038 Note that symbols which used to be common must be left alone. */
5040 /* Calculate any reloc addend by looking at the symbol. */
5041 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
5044 cache_ptr->address -= asect->vma;
5045 /* !! cache_ptr->section = NULL;*/
5047 /* Fill in the cache_ptr->howto field from dst.r_type. */
5048 RTYPE2HOWTO (cache_ptr, &dst);
5049 #endif /* RELOC_PROCESSING */
5051 if (cache_ptr->howto == NULL)
5054 /* xgettext:c-format */
5055 (_("%pB: illegal relocation type %d at address %#" PRIx64),
5056 abfd, dst.r_type, (uint64_t) dst.r_vaddr);
5057 bfd_set_error (bfd_error_bad_value);
5062 asect->relocation = reloc_cache;
5066 #ifndef coff_rtype_to_howto
5069 /* Get the howto structure for a reloc. This is only used if the file
5070 including this one defines coff_relocate_section to be
5071 _bfd_coff_generic_relocate_section, so it is OK if it does not
5072 always work. It is the responsibility of the including file to
5073 make sure it is reasonable if it is needed. */
5075 static reloc_howto_type *
5076 coff_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
5077 asection *sec ATTRIBUTE_UNUSED,
5078 struct internal_reloc *rel ATTRIBUTE_UNUSED,
5079 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED,
5080 struct internal_syment *sym ATTRIBUTE_UNUSED,
5081 bfd_vma *addendp ATTRIBUTE_UNUSED)
5085 genrel.howto = NULL;
5086 RTYPE2HOWTO (&genrel, rel);
5087 return genrel.howto;
5090 #else /* ! defined (RTYPE2HOWTO) */
5092 #define coff_rtype_to_howto NULL
5094 #endif /* ! defined (RTYPE2HOWTO) */
5095 #endif /* ! defined (coff_rtype_to_howto) */
5097 /* This is stupid. This function should be a boolean predicate. */
5100 coff_canonicalize_reloc (bfd * abfd,
5105 arelent *tblptr = section->relocation;
5106 unsigned int count = 0;
5108 if (section->flags & SEC_CONSTRUCTOR)
5110 /* This section has relocs made up by us, they are not in the
5111 file, so take them out of their chain and place them into
5112 the data area provided. */
5113 arelent_chain *chain = section->constructor_chain;
5115 for (count = 0; count < section->reloc_count; count++)
5117 *relptr++ = &chain->relent;
5118 chain = chain->next;
5123 if (! coff_slurp_reloc_table (abfd, section, symbols))
5126 tblptr = section->relocation;
5128 for (; count++ < section->reloc_count;)
5129 *relptr++ = tblptr++;
5132 return section->reloc_count;
5135 #ifndef coff_set_reloc
5136 #define coff_set_reloc _bfd_generic_set_reloc
5139 #ifndef coff_reloc16_estimate
5140 #define coff_reloc16_estimate dummy_reloc16_estimate
5143 dummy_reloc16_estimate (bfd *abfd ATTRIBUTE_UNUSED,
5144 asection *input_section ATTRIBUTE_UNUSED,
5145 arelent *reloc ATTRIBUTE_UNUSED,
5146 unsigned int shrink ATTRIBUTE_UNUSED,
5147 struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
5155 #ifndef coff_reloc16_extra_cases
5157 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
5159 /* This works even if abort is not declared in any header file. */
5162 dummy_reloc16_extra_cases (bfd *abfd ATTRIBUTE_UNUSED,
5163 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
5164 struct bfd_link_order *link_order ATTRIBUTE_UNUSED,
5165 arelent *reloc ATTRIBUTE_UNUSED,
5166 bfd_byte *data ATTRIBUTE_UNUSED,
5167 unsigned int *src_ptr ATTRIBUTE_UNUSED,
5168 unsigned int *dst_ptr ATTRIBUTE_UNUSED)
5174 /* If coff_relocate_section is defined, we can use the optimized COFF
5175 backend linker. Otherwise we must continue to use the old linker. */
5177 #ifdef coff_relocate_section
5179 #ifndef coff_bfd_link_hash_table_create
5180 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
5182 #ifndef coff_bfd_link_add_symbols
5183 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
5185 #ifndef coff_bfd_final_link
5186 #define coff_bfd_final_link _bfd_coff_final_link
5189 #else /* ! defined (coff_relocate_section) */
5191 #define coff_relocate_section NULL
5192 #ifndef coff_bfd_link_hash_table_create
5193 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
5195 #ifndef coff_bfd_link_add_symbols
5196 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
5198 #define coff_bfd_final_link _bfd_generic_final_link
5200 #endif /* ! defined (coff_relocate_section) */
5202 #define coff_bfd_link_just_syms _bfd_generic_link_just_syms
5203 #define coff_bfd_copy_link_hash_symbol_type \
5204 _bfd_generic_copy_link_hash_symbol_type
5205 #define coff_bfd_link_split_section _bfd_generic_link_split_section
5207 #define coff_bfd_link_check_relocs _bfd_generic_link_check_relocs
5209 #ifndef coff_start_final_link
5210 #define coff_start_final_link NULL
5213 #ifndef coff_adjust_symndx
5214 #define coff_adjust_symndx NULL
5217 #ifndef coff_link_add_one_symbol
5218 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5221 #ifndef coff_link_output_has_begun
5224 coff_link_output_has_begun (bfd * abfd,
5225 struct coff_final_link_info * info ATTRIBUTE_UNUSED)
5227 return abfd->output_has_begun;
5231 #ifndef coff_final_link_postscript
5234 coff_final_link_postscript (bfd * abfd ATTRIBUTE_UNUSED,
5235 struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED)
5241 #ifndef coff_SWAP_aux_in
5242 #define coff_SWAP_aux_in coff_swap_aux_in
5244 #ifndef coff_SWAP_sym_in
5245 #define coff_SWAP_sym_in coff_swap_sym_in
5247 #ifndef coff_SWAP_lineno_in
5248 #define coff_SWAP_lineno_in coff_swap_lineno_in
5250 #ifndef coff_SWAP_aux_out
5251 #define coff_SWAP_aux_out coff_swap_aux_out
5253 #ifndef coff_SWAP_sym_out
5254 #define coff_SWAP_sym_out coff_swap_sym_out
5256 #ifndef coff_SWAP_lineno_out
5257 #define coff_SWAP_lineno_out coff_swap_lineno_out
5259 #ifndef coff_SWAP_reloc_out
5260 #define coff_SWAP_reloc_out coff_swap_reloc_out
5262 #ifndef coff_SWAP_filehdr_out
5263 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5265 #ifndef coff_SWAP_aouthdr_out
5266 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5268 #ifndef coff_SWAP_scnhdr_out
5269 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5271 #ifndef coff_SWAP_reloc_in
5272 #define coff_SWAP_reloc_in coff_swap_reloc_in
5274 #ifndef coff_SWAP_filehdr_in
5275 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5277 #ifndef coff_SWAP_aouthdr_in
5278 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5280 #ifndef coff_SWAP_scnhdr_in
5281 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5284 static bfd_coff_backend_data bfd_coff_std_swap_table ATTRIBUTE_UNUSED =
5286 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5287 coff_SWAP_aux_out, coff_SWAP_sym_out,
5288 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5289 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5290 coff_SWAP_scnhdr_out,
5291 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5292 #ifdef COFF_LONG_FILENAMES
5297 COFF_DEFAULT_LONG_SECTION_NAMES,
5298 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5299 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5304 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5310 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5311 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5312 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5313 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5314 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5315 coff_classify_symbol, coff_compute_section_file_positions,
5316 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5317 coff_adjust_symndx, coff_link_add_one_symbol,
5318 coff_link_output_has_begun, coff_final_link_postscript,
5323 /* COFF0 differs in file/section header size and relocation entry size. */
5325 static bfd_coff_backend_data ticoff0_swap_table =
5327 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5328 coff_SWAP_aux_out, coff_SWAP_sym_out,
5329 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5330 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5331 coff_SWAP_scnhdr_out,
5332 FILHSZ_V0, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ_V0, LINESZ, FILNMLEN,
5333 #ifdef COFF_LONG_FILENAMES
5338 COFF_DEFAULT_LONG_SECTION_NAMES,
5339 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5340 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5345 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5351 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5352 coff_SWAP_reloc_in, ticoff0_bad_format_hook, coff_set_arch_mach_hook,
5353 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5354 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5355 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5356 coff_classify_symbol, coff_compute_section_file_positions,
5357 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5358 coff_adjust_symndx, coff_link_add_one_symbol,
5359 coff_link_output_has_begun, coff_final_link_postscript,
5365 /* COFF1 differs in section header size. */
5367 static bfd_coff_backend_data ticoff1_swap_table =
5369 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5370 coff_SWAP_aux_out, coff_SWAP_sym_out,
5371 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5372 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5373 coff_SWAP_scnhdr_out,
5374 FILHSZ, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5375 #ifdef COFF_LONG_FILENAMES
5380 COFF_DEFAULT_LONG_SECTION_NAMES,
5381 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5382 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5387 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5393 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5394 coff_SWAP_reloc_in, ticoff1_bad_format_hook, coff_set_arch_mach_hook,
5395 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5396 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5397 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5398 coff_classify_symbol, coff_compute_section_file_positions,
5399 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5400 coff_adjust_symndx, coff_link_add_one_symbol,
5401 coff_link_output_has_begun, coff_final_link_postscript,
5402 bfd_pe_print_pdata /* huh */
5406 #ifdef COFF_WITH_PE_BIGOBJ
5407 /* The UID for bigobj files. */
5409 static const char header_bigobj_classid[16] =
5411 0xC7, 0xA1, 0xBA, 0xD1,
5415 0xFA, 0xF6, 0x6A, 0xA4, 0xDC, 0xB8
5418 /* Swap routines. */
5421 coff_bigobj_swap_filehdr_in (bfd * abfd, void * src, void * dst)
5423 struct external_ANON_OBJECT_HEADER_BIGOBJ *filehdr_src =
5424 (struct external_ANON_OBJECT_HEADER_BIGOBJ *) src;
5425 struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst;
5427 filehdr_dst->f_magic = H_GET_16 (abfd, filehdr_src->Machine);
5428 filehdr_dst->f_nscns = H_GET_32 (abfd, filehdr_src->NumberOfSections);
5429 filehdr_dst->f_timdat = H_GET_32 (abfd, filehdr_src->TimeDateStamp);
5430 filehdr_dst->f_symptr =
5431 GET_FILEHDR_SYMPTR (abfd, filehdr_src->PointerToSymbolTable);
5432 filehdr_dst->f_nsyms = H_GET_32 (abfd, filehdr_src->NumberOfSymbols);
5433 filehdr_dst->f_opthdr = 0;
5434 filehdr_dst->f_flags = 0;
5436 /* Check other magic numbers. */
5437 if (H_GET_16 (abfd, filehdr_src->Sig1) != IMAGE_FILE_MACHINE_UNKNOWN
5438 || H_GET_16 (abfd, filehdr_src->Sig2) != 0xffff
5439 || H_GET_16 (abfd, filehdr_src->Version) != 2
5440 || memcmp (filehdr_src->ClassID, header_bigobj_classid, 16) != 0)
5441 filehdr_dst->f_opthdr = 0xffff;
5443 /* Note that CLR metadata are ignored. */
5447 coff_bigobj_swap_filehdr_out (bfd *abfd, void * in, void * out)
5449 struct internal_filehdr *filehdr_in = (struct internal_filehdr *) in;
5450 struct external_ANON_OBJECT_HEADER_BIGOBJ *filehdr_out =
5451 (struct external_ANON_OBJECT_HEADER_BIGOBJ *) out;
5453 memset (filehdr_out, 0, sizeof (*filehdr_out));
5455 H_PUT_16 (abfd, IMAGE_FILE_MACHINE_UNKNOWN, filehdr_out->Sig1);
5456 H_PUT_16 (abfd, 0xffff, filehdr_out->Sig2);
5457 H_PUT_16 (abfd, 2, filehdr_out->Version);
5458 memcpy (filehdr_out->ClassID, header_bigobj_classid, 16);
5459 H_PUT_16 (abfd, filehdr_in->f_magic, filehdr_out->Machine);
5460 H_PUT_32 (abfd, filehdr_in->f_nscns, filehdr_out->NumberOfSections);
5461 H_PUT_32 (abfd, filehdr_in->f_timdat, filehdr_out->TimeDateStamp);
5462 PUT_FILEHDR_SYMPTR (abfd, filehdr_in->f_symptr,
5463 filehdr_out->PointerToSymbolTable);
5464 H_PUT_32 (abfd, filehdr_in->f_nsyms, filehdr_out->NumberOfSymbols);
5466 return bfd_coff_filhsz (abfd);
5470 coff_bigobj_swap_sym_in (bfd * abfd, void * ext1, void * in1)
5472 SYMENT_BIGOBJ *ext = (SYMENT_BIGOBJ *) ext1;
5473 struct internal_syment *in = (struct internal_syment *) in1;
5475 if (ext->e.e_name[0] == 0)
5477 in->_n._n_n._n_zeroes = 0;
5478 in->_n._n_n._n_offset = H_GET_32 (abfd, ext->e.e.e_offset);
5482 #if SYMNMLEN != E_SYMNMLEN
5483 #error we need to cope with truncating or extending SYMNMLEN
5485 memcpy (in->_n._n_name, ext->e.e_name, SYMNMLEN);
5489 in->n_value = H_GET_32 (abfd, ext->e_value);
5490 BFD_ASSERT (sizeof (in->n_scnum) >= 4);
5491 in->n_scnum = H_GET_32 (abfd, ext->e_scnum);
5492 in->n_type = H_GET_16 (abfd, ext->e_type);
5493 in->n_sclass = H_GET_8 (abfd, ext->e_sclass);
5494 in->n_numaux = H_GET_8 (abfd, ext->e_numaux);
5498 coff_bigobj_swap_sym_out (bfd * abfd, void * inp, void * extp)
5500 struct internal_syment *in = (struct internal_syment *) inp;
5501 SYMENT_BIGOBJ *ext = (SYMENT_BIGOBJ *) extp;
5503 if (in->_n._n_name[0] == 0)
5505 H_PUT_32 (abfd, 0, ext->e.e.e_zeroes);
5506 H_PUT_32 (abfd, in->_n._n_n._n_offset, ext->e.e.e_offset);
5510 #if SYMNMLEN != E_SYMNMLEN
5511 #error we need to cope with truncating or extending SYMNMLEN
5513 memcpy (ext->e.e_name, in->_n._n_name, SYMNMLEN);
5517 H_PUT_32 (abfd, in->n_value, ext->e_value);
5518 H_PUT_32 (abfd, in->n_scnum, ext->e_scnum);
5520 H_PUT_16 (abfd, in->n_type, ext->e_type);
5521 H_PUT_8 (abfd, in->n_sclass, ext->e_sclass);
5522 H_PUT_8 (abfd, in->n_numaux, ext->e_numaux);
5524 return SYMESZ_BIGOBJ;
5528 coff_bigobj_swap_aux_in (bfd *abfd,
5536 AUXENT_BIGOBJ *ext = (AUXENT_BIGOBJ *) ext1;
5537 union internal_auxent *in = (union internal_auxent *) in1;
5539 /* Make sure that all fields in the aux structure are
5541 memset (in, 0, sizeof * in);
5548 memcpy (in->x_file.x_fname, ext->File.Name,
5549 numaux * sizeof (AUXENT_BIGOBJ));
5552 memcpy (in->x_file.x_fname, ext->File.Name, sizeof (ext->File.Name));
5560 in->x_scn.x_scnlen = H_GET_32 (abfd, ext->Section.Length);
5561 in->x_scn.x_nreloc =
5562 H_GET_16 (abfd, ext->Section.NumberOfRelocations);
5563 in->x_scn.x_nlinno =
5564 H_GET_16 (abfd, ext->Section.NumberOfLinenumbers);
5565 in->x_scn.x_checksum = H_GET_32 (abfd, ext->Section.Checksum);
5566 in->x_scn.x_associated = H_GET_16 (abfd, ext->Section.Number)
5567 | (H_GET_16 (abfd, ext->Section.HighNumber) << 16);
5568 in->x_scn.x_comdat = H_GET_8 (abfd, ext->Section.Selection);
5574 in->x_sym.x_tagndx.l = H_GET_32 (abfd, ext->Sym.WeakDefaultSymIndex);
5575 /* Characteristics is ignored. */
5581 coff_bigobj_swap_aux_out (bfd * abfd,
5585 int indx ATTRIBUTE_UNUSED,
5586 int numaux ATTRIBUTE_UNUSED,
5589 union internal_auxent * in = (union internal_auxent *) inp;
5590 AUXENT_BIGOBJ *ext = (AUXENT_BIGOBJ *) extp;
5592 memset (ext, 0, AUXESZ);
5597 memcpy (ext->File.Name, in->x_file.x_fname, sizeof (ext->File.Name));
5606 H_PUT_32 (abfd, in->x_scn.x_scnlen, ext->Section.Length);
5607 H_PUT_16 (abfd, in->x_scn.x_nreloc,
5608 ext->Section.NumberOfRelocations);
5609 H_PUT_16 (abfd, in->x_scn.x_nlinno,
5610 ext->Section.NumberOfLinenumbers);
5611 H_PUT_32 (abfd, in->x_scn.x_checksum, ext->Section.Checksum);
5612 H_PUT_16 (abfd, in->x_scn.x_associated & 0xffff,
5613 ext->Section.Number);
5614 H_PUT_16 (abfd, (in->x_scn.x_associated >> 16),
5615 ext->Section.HighNumber);
5616 H_PUT_8 (abfd, in->x_scn.x_comdat, ext->Section.Selection);
5622 H_PUT_32 (abfd, in->x_sym.x_tagndx.l, ext->Sym.WeakDefaultSymIndex);
5623 H_PUT_32 (abfd, 1, ext->Sym.WeakSearchType);
5628 static bfd_coff_backend_data bigobj_swap_table =
5630 coff_bigobj_swap_aux_in, coff_bigobj_swap_sym_in, coff_SWAP_lineno_in,
5631 coff_bigobj_swap_aux_out, coff_bigobj_swap_sym_out,
5632 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5633 coff_bigobj_swap_filehdr_out, coff_SWAP_aouthdr_out,
5634 coff_SWAP_scnhdr_out,
5635 FILHSZ_BIGOBJ, AOUTSZ, SCNHSZ, SYMESZ_BIGOBJ, AUXESZ_BIGOBJ,
5636 RELSZ, LINESZ, FILNMLEN_BIGOBJ,
5638 COFF_DEFAULT_LONG_SECTION_NAMES,
5639 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5643 coff_bigobj_swap_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5644 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5645 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5646 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5647 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5648 coff_classify_symbol, coff_compute_section_file_positions,
5649 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5650 coff_adjust_symndx, coff_link_add_one_symbol,
5651 coff_link_output_has_begun, coff_final_link_postscript,
5652 bfd_pe_print_pdata /* huh */
5655 #endif /* COFF_WITH_PE_BIGOBJ */
5657 #ifndef coff_close_and_cleanup
5658 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5661 #ifndef coff_bfd_free_cached_info
5662 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5665 #ifndef coff_get_section_contents
5666 #define coff_get_section_contents _bfd_generic_get_section_contents
5669 #ifndef coff_bfd_copy_private_symbol_data
5670 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5673 #ifndef coff_bfd_copy_private_header_data
5674 #define coff_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
5677 #ifndef coff_bfd_copy_private_section_data
5678 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5681 #ifndef coff_bfd_copy_private_bfd_data
5682 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5685 #ifndef coff_bfd_merge_private_bfd_data
5686 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5689 #ifndef coff_bfd_set_private_flags
5690 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5693 #ifndef coff_bfd_print_private_bfd_data
5694 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5697 #ifndef coff_bfd_is_local_label_name
5698 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5701 #ifndef coff_bfd_is_target_special_symbol
5702 #define coff_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
5705 #ifndef coff_read_minisymbols
5706 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5709 #ifndef coff_minisymbol_to_symbol
5710 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5713 /* The reloc lookup routine must be supplied by each individual COFF
5715 #ifndef coff_bfd_reloc_type_lookup
5716 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5718 #ifndef coff_bfd_reloc_name_lookup
5719 #define coff_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
5722 #ifndef coff_bfd_get_relocated_section_contents
5723 #define coff_bfd_get_relocated_section_contents \
5724 bfd_generic_get_relocated_section_contents
5727 #ifndef coff_bfd_relax_section
5728 #define coff_bfd_relax_section bfd_generic_relax_section
5731 #ifndef coff_bfd_gc_sections
5732 #define coff_bfd_gc_sections bfd_coff_gc_sections
5735 #ifndef coff_bfd_lookup_section_flags
5736 #define coff_bfd_lookup_section_flags bfd_generic_lookup_section_flags
5739 #ifndef coff_bfd_merge_sections
5740 #define coff_bfd_merge_sections bfd_generic_merge_sections
5743 #ifndef coff_bfd_is_group_section
5744 #define coff_bfd_is_group_section bfd_generic_is_group_section
5747 #ifndef coff_bfd_discard_group
5748 #define coff_bfd_discard_group bfd_generic_discard_group
5751 #ifndef coff_section_already_linked
5752 #define coff_section_already_linked \
5753 _bfd_coff_section_already_linked
5756 #ifndef coff_bfd_define_common_symbol
5757 #define coff_bfd_define_common_symbol bfd_generic_define_common_symbol
5760 #ifndef coff_bfd_link_hide_symbol
5761 #define coff_bfd_link_hide_symbol _bfd_generic_link_hide_symbol
5764 #ifndef coff_bfd_define_start_stop
5765 #define coff_bfd_define_start_stop bfd_generic_define_start_stop
5768 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5769 const bfd_target VAR = \
5772 bfd_target_coff_flavour, \
5773 BFD_ENDIAN_BIG, /* Data byte order is big. */ \
5774 BFD_ENDIAN_BIG, /* Header byte order is big. */ \
5775 /* object flags */ \
5776 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5777 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5778 /* section flags */ \
5779 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5780 UNDER, /* Leading symbol underscore. */ \
5781 '/', /* AR_pad_char. */ \
5782 15, /* AR_max_namelen. */ \
5783 0, /* match priority. */ \
5785 /* Data conversion functions. */ \
5786 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5787 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5788 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5790 /* Header conversion functions. */ \
5791 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5792 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5793 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5795 { /* bfd_check_format. */ \
5796 _bfd_dummy_target, \
5798 bfd_generic_archive_p, \
5801 { /* bfd_set_format. */ \
5802 _bfd_bool_bfd_false_error, \
5804 _bfd_generic_mkarchive, \
5805 _bfd_bool_bfd_false_error \
5807 { /* bfd_write_contents. */ \
5808 _bfd_bool_bfd_false_error, \
5809 coff_write_object_contents, \
5810 _bfd_write_archive_contents, \
5811 _bfd_bool_bfd_false_error \
5814 BFD_JUMP_TABLE_GENERIC (coff), \
5815 BFD_JUMP_TABLE_COPY (coff), \
5816 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5817 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5818 BFD_JUMP_TABLE_SYMBOLS (coff), \
5819 BFD_JUMP_TABLE_RELOCS (coff), \
5820 BFD_JUMP_TABLE_WRITE (coff), \
5821 BFD_JUMP_TABLE_LINK (coff), \
5822 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5829 #define CREATE_BIGHDR_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5830 const bfd_target VAR = \
5833 bfd_target_coff_flavour, \
5834 BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \
5835 BFD_ENDIAN_BIG, /* Header byte order is big. */ \
5836 /* object flags */ \
5837 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5838 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5839 /* section flags */ \
5840 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5841 UNDER, /* Leading symbol underscore. */ \
5842 '/', /* AR_pad_char. */ \
5843 15, /* AR_max_namelen. */ \
5844 0, /* match priority. */ \
5846 /* Data conversion functions. */ \
5847 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5848 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5849 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5851 /* Header conversion functions. */ \
5852 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5853 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5854 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5856 { /* bfd_check_format. */ \
5857 _bfd_dummy_target, \
5859 bfd_generic_archive_p, \
5862 { /* bfd_set_format. */ \
5863 _bfd_bool_bfd_false_error, \
5865 _bfd_generic_mkarchive, \
5866 _bfd_bool_bfd_false_error \
5868 { /* bfd_write_contents. */ \
5869 _bfd_bool_bfd_false_error, \
5870 coff_write_object_contents, \
5871 _bfd_write_archive_contents, \
5872 _bfd_bool_bfd_false_error \
5875 BFD_JUMP_TABLE_GENERIC (coff), \
5876 BFD_JUMP_TABLE_COPY (coff), \
5877 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5878 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5879 BFD_JUMP_TABLE_SYMBOLS (coff), \
5880 BFD_JUMP_TABLE_RELOCS (coff), \
5881 BFD_JUMP_TABLE_WRITE (coff), \
5882 BFD_JUMP_TABLE_LINK (coff), \
5883 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5890 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5891 const bfd_target VAR = \
5894 bfd_target_coff_flavour, \
5895 BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \
5896 BFD_ENDIAN_LITTLE, /* Header byte order is little. */ \
5897 /* object flags */ \
5898 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5899 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5900 /* section flags */ \
5901 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5902 UNDER, /* Leading symbol underscore. */ \
5903 '/', /* AR_pad_char. */ \
5904 15, /* AR_max_namelen. */ \
5905 0, /* match priority. */ \
5907 /* Data conversion functions. */ \
5908 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5909 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5910 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5911 /* Header conversion functions. */ \
5912 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5913 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5914 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5916 { /* bfd_check_format. */ \
5917 _bfd_dummy_target, \
5919 bfd_generic_archive_p, \
5922 { /* bfd_set_format. */ \
5923 _bfd_bool_bfd_false_error, \
5925 _bfd_generic_mkarchive, \
5926 _bfd_bool_bfd_false_error \
5928 { /* bfd_write_contents. */ \
5929 _bfd_bool_bfd_false_error, \
5930 coff_write_object_contents, \
5931 _bfd_write_archive_contents, \
5932 _bfd_bool_bfd_false_error \
5935 BFD_JUMP_TABLE_GENERIC (coff), \
5936 BFD_JUMP_TABLE_COPY (coff), \
5937 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5938 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5939 BFD_JUMP_TABLE_SYMBOLS (coff), \
5940 BFD_JUMP_TABLE_RELOCS (coff), \
5941 BFD_JUMP_TABLE_WRITE (coff), \
5942 BFD_JUMP_TABLE_LINK (coff), \
5943 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \