1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright (C) 1990-2018 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
22 /* Most of this hacked by Steve Chamberlain,
28 BFD supports a number of different flavours of coff format.
29 The major differences between formats are the sizes and
30 alignments of fields in structures on disk, and the occasional
33 Coff in all its varieties is implemented with a few common
34 files and a number of implementation specific files. For
35 example, The 88k bcs coff format is implemented in the file
36 @file{coff-m88k.c}. This file @code{#include}s
37 @file{coff/m88k.h} which defines the external structure of the
38 coff format for the 88k, and @file{coff/internal.h} which
39 defines the internal structure. @file{coff-m88k.c} also
40 defines the relocations used by the 88k format
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)
1180 || CONST_STRNEQ (name, ".stab"))
1182 /* Assume read only unless IMAGE_SCN_MEM_WRITE is specified. */
1183 sec_flags = SEC_READONLY;
1185 /* If section disallows read, then set the NOREAD flag. */
1186 if ((styp_flags & IMAGE_SCN_MEM_READ) == 0)
1187 sec_flags |= SEC_COFF_NOREAD;
1189 /* Process each flag bit in styp_flags in turn. */
1192 unsigned long flag = styp_flags & - styp_flags;
1193 char * unhandled = NULL;
1195 styp_flags &= ~ flag;
1197 /* We infer from the distinct read/write/execute bits the settings
1198 of some of the bfd flags; the actual values, should we need them,
1199 are also in pei_section_data (abfd, section)->pe_flags. */
1204 unhandled = "STYP_DSECT";
1207 unhandled = "STYP_GROUP";
1210 unhandled = "STYP_COPY";
1213 unhandled = "STYP_OVER";
1215 #ifdef SEC_NEVER_LOAD
1217 sec_flags |= SEC_NEVER_LOAD;
1220 case IMAGE_SCN_MEM_READ:
1221 sec_flags &= ~SEC_COFF_NOREAD;
1223 case IMAGE_SCN_TYPE_NO_PAD:
1226 case IMAGE_SCN_LNK_OTHER:
1227 unhandled = "IMAGE_SCN_LNK_OTHER";
1229 case IMAGE_SCN_MEM_NOT_CACHED:
1230 unhandled = "IMAGE_SCN_MEM_NOT_CACHED";
1232 case IMAGE_SCN_MEM_NOT_PAGED:
1233 /* Generate a warning message rather using the 'unhandled'
1234 variable as this will allow some .sys files generate by
1235 other toolchains to be processed. See bugzilla issue 196. */
1236 /* xgettext:c-format */
1237 _bfd_error_handler (_("%pB: warning: ignoring section flag"
1238 " %s in section %s"),
1239 abfd, "IMAGE_SCN_MEM_NOT_PAGED", name);
1241 case IMAGE_SCN_MEM_EXECUTE:
1242 sec_flags |= SEC_CODE;
1244 case IMAGE_SCN_MEM_WRITE:
1245 sec_flags &= ~ SEC_READONLY;
1247 case IMAGE_SCN_MEM_DISCARDABLE:
1248 /* The MS PE spec says that debug sections are DISCARDABLE,
1249 but the presence of a DISCARDABLE flag does not necessarily
1250 mean that a given section contains debug information. Thus
1251 we only set the SEC_DEBUGGING flag on sections that we
1252 recognise as containing debug information. */
1255 || strcmp (name, _COMMENT) == 0
1259 sec_flags |= SEC_DEBUGGING | SEC_READONLY;
1262 case IMAGE_SCN_MEM_SHARED:
1263 sec_flags |= SEC_COFF_SHARED;
1265 case IMAGE_SCN_LNK_REMOVE:
1267 sec_flags |= SEC_EXCLUDE;
1269 case IMAGE_SCN_CNT_CODE:
1270 sec_flags |= SEC_CODE | SEC_ALLOC | SEC_LOAD;
1272 case IMAGE_SCN_CNT_INITIALIZED_DATA:
1274 sec_flags |= SEC_DEBUGGING;
1276 sec_flags |= SEC_DATA | SEC_ALLOC | SEC_LOAD;
1278 case IMAGE_SCN_CNT_UNINITIALIZED_DATA:
1279 sec_flags |= SEC_ALLOC;
1281 case IMAGE_SCN_LNK_INFO:
1282 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
1283 defined. coff_compute_section_file_positions uses
1284 COFF_PAGE_SIZE to ensure that the low order bits of the
1285 section VMA and the file offset match. If we don't know
1286 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
1287 and demand page loading of the file will fail. */
1288 #ifdef COFF_PAGE_SIZE
1289 sec_flags |= SEC_DEBUGGING;
1292 case IMAGE_SCN_LNK_COMDAT:
1293 /* COMDAT gets very special treatment. */
1294 sec_flags = handle_COMDAT (abfd, sec_flags, hdr, name, section);
1297 /* Silently ignore for now. */
1301 /* If the section flag was not handled, report it here. */
1302 if (unhandled != NULL)
1305 /* xgettext:c-format */
1306 (_("%pB (%s): section flag %s (%#lx) ignored"),
1307 abfd, name, unhandled, flag);
1312 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
1313 /* As a GNU extension, if the name begins with .gnu.linkonce, we
1314 only link a single copy of the section. This is used to support
1315 g++. g++ will emit each template expansion in its own section.
1316 The symbols will be defined as weak, so that multiple definitions
1317 are permitted. The GNU linker extension is to actually discard
1318 all but one of the sections. */
1319 if (CONST_STRNEQ (name, ".gnu.linkonce"))
1320 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1324 * flags_ptr = sec_flags;
1329 #endif /* COFF_WITH_PE */
1331 #define get_index(symbol) ((symbol)->udata.i)
1335 bfd_coff_backend_data
1339 .{* COFF symbol classifications. *}
1341 .enum coff_symbol_classification
1343 . {* Global symbol. *}
1344 . COFF_SYMBOL_GLOBAL,
1345 . {* Common symbol. *}
1346 . COFF_SYMBOL_COMMON,
1347 . {* Undefined symbol. *}
1348 . COFF_SYMBOL_UNDEFINED,
1349 . {* Local symbol. *}
1350 . COFF_SYMBOL_LOCAL,
1351 . {* PE section symbol. *}
1352 . COFF_SYMBOL_PE_SECTION
1355 .typedef asection * (*coff_gc_mark_hook_fn)
1356 . (asection *, struct bfd_link_info *, struct internal_reloc *,
1357 . struct coff_link_hash_entry *, struct internal_syment *);
1359 Special entry points for gdb to swap in coff symbol table parts:
1362 . void (*_bfd_coff_swap_aux_in)
1363 . (bfd *, void *, int, int, int, int, void *);
1365 . void (*_bfd_coff_swap_sym_in)
1366 . (bfd *, void *, void *);
1368 . void (*_bfd_coff_swap_lineno_in)
1369 . (bfd *, void *, void *);
1371 . unsigned int (*_bfd_coff_swap_aux_out)
1372 . (bfd *, void *, int, int, int, int, void *);
1374 . unsigned int (*_bfd_coff_swap_sym_out)
1375 . (bfd *, void *, void *);
1377 . unsigned int (*_bfd_coff_swap_lineno_out)
1378 . (bfd *, void *, void *);
1380 . unsigned int (*_bfd_coff_swap_reloc_out)
1381 . (bfd *, void *, void *);
1383 . unsigned int (*_bfd_coff_swap_filehdr_out)
1384 . (bfd *, void *, void *);
1386 . unsigned int (*_bfd_coff_swap_aouthdr_out)
1387 . (bfd *, void *, void *);
1389 . unsigned int (*_bfd_coff_swap_scnhdr_out)
1390 . (bfd *, void *, void *);
1392 . unsigned int _bfd_filhsz;
1393 . unsigned int _bfd_aoutsz;
1394 . unsigned int _bfd_scnhsz;
1395 . unsigned int _bfd_symesz;
1396 . unsigned int _bfd_auxesz;
1397 . unsigned int _bfd_relsz;
1398 . unsigned int _bfd_linesz;
1399 . unsigned int _bfd_filnmlen;
1400 . bfd_boolean _bfd_coff_long_filenames;
1402 . bfd_boolean _bfd_coff_long_section_names;
1403 . bfd_boolean (*_bfd_coff_set_long_section_names)
1406 . unsigned int _bfd_coff_default_section_alignment_power;
1407 . bfd_boolean _bfd_coff_force_symnames_in_strings;
1408 . unsigned int _bfd_coff_debug_string_prefix_length;
1409 . unsigned int _bfd_coff_max_nscns;
1411 . void (*_bfd_coff_swap_filehdr_in)
1412 . (bfd *, void *, void *);
1414 . void (*_bfd_coff_swap_aouthdr_in)
1415 . (bfd *, void *, void *);
1417 . void (*_bfd_coff_swap_scnhdr_in)
1418 . (bfd *, void *, void *);
1420 . void (*_bfd_coff_swap_reloc_in)
1421 . (bfd *abfd, void *, void *);
1423 . bfd_boolean (*_bfd_coff_bad_format_hook)
1426 . bfd_boolean (*_bfd_coff_set_arch_mach_hook)
1429 . void * (*_bfd_coff_mkobject_hook)
1430 . (bfd *, void *, void *);
1432 . bfd_boolean (*_bfd_styp_to_sec_flags_hook)
1433 . (bfd *, void *, const char *, asection *, flagword *);
1435 . void (*_bfd_set_alignment_hook)
1436 . (bfd *, asection *, void *);
1438 . bfd_boolean (*_bfd_coff_slurp_symbol_table)
1441 . bfd_boolean (*_bfd_coff_symname_in_debug)
1442 . (bfd *, struct internal_syment *);
1444 . bfd_boolean (*_bfd_coff_pointerize_aux_hook)
1445 . (bfd *, combined_entry_type *, combined_entry_type *,
1446 . unsigned int, combined_entry_type *);
1448 . bfd_boolean (*_bfd_coff_print_aux)
1449 . (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1450 . combined_entry_type *, unsigned int);
1452 . void (*_bfd_coff_reloc16_extra_cases)
1453 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
1454 . bfd_byte *, unsigned int *, unsigned int *);
1456 . int (*_bfd_coff_reloc16_estimate)
1457 . (bfd *, asection *, arelent *, unsigned int,
1458 . struct bfd_link_info *);
1460 . enum coff_symbol_classification (*_bfd_coff_classify_symbol)
1461 . (bfd *, struct internal_syment *);
1463 . bfd_boolean (*_bfd_coff_compute_section_file_positions)
1466 . bfd_boolean (*_bfd_coff_start_final_link)
1467 . (bfd *, struct bfd_link_info *);
1469 . bfd_boolean (*_bfd_coff_relocate_section)
1470 . (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
1471 . struct internal_reloc *, struct internal_syment *, asection **);
1473 . reloc_howto_type *(*_bfd_coff_rtype_to_howto)
1474 . (bfd *, asection *, struct internal_reloc *,
1475 . struct coff_link_hash_entry *, struct internal_syment *, bfd_vma *);
1477 . bfd_boolean (*_bfd_coff_adjust_symndx)
1478 . (bfd *, struct bfd_link_info *, bfd *, asection *,
1479 . struct internal_reloc *, bfd_boolean *);
1481 . bfd_boolean (*_bfd_coff_link_add_one_symbol)
1482 . (struct bfd_link_info *, bfd *, const char *, flagword,
1483 . asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
1484 . struct bfd_link_hash_entry **);
1486 . bfd_boolean (*_bfd_coff_link_output_has_begun)
1487 . (bfd *, struct coff_final_link_info *);
1489 . bfd_boolean (*_bfd_coff_final_link_postscript)
1490 . (bfd *, struct coff_final_link_info *);
1492 . bfd_boolean (*_bfd_coff_print_pdata)
1495 .} bfd_coff_backend_data;
1497 .#define coff_backend_info(abfd) \
1498 . ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1500 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1501 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1503 .#define bfd_coff_swap_sym_in(a,e,i) \
1504 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1506 .#define bfd_coff_swap_lineno_in(a,e,i) \
1507 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1509 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1510 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1512 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1513 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1515 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1516 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1518 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1519 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1521 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1522 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1524 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1525 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1527 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1528 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1530 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1531 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1532 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1533 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1534 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1535 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
1536 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1537 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1538 .#define bfd_coff_long_filenames(abfd) \
1539 . (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1540 .#define bfd_coff_long_section_names(abfd) \
1541 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1542 .#define bfd_coff_set_long_section_names(abfd, enable) \
1543 . ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable))
1544 .#define bfd_coff_default_section_alignment_power(abfd) \
1545 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1546 .#define bfd_coff_max_nscns(abfd) \
1547 . (coff_backend_info (abfd)->_bfd_coff_max_nscns)
1549 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1550 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1552 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1553 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1555 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1556 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1558 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1559 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1561 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1562 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1564 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1565 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1566 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1567 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
1568 . (abfd, filehdr, aouthdr))
1570 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
1571 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1572 . (abfd, scnhdr, name, section, flags_ptr))
1574 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1575 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1577 .#define bfd_coff_slurp_symbol_table(abfd)\
1578 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1580 .#define bfd_coff_symname_in_debug(abfd, sym)\
1581 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1583 .#define bfd_coff_force_symnames_in_strings(abfd)\
1584 . (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
1586 .#define bfd_coff_debug_string_prefix_length(abfd)\
1587 . (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
1589 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1590 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1591 . (abfd, file, base, symbol, aux, indaux))
1593 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
1594 . reloc, data, src_ptr, dst_ptr)\
1595 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1596 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1598 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1599 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1600 . (abfd, section, reloc, shrink, link_info))
1602 .#define bfd_coff_classify_symbol(abfd, sym)\
1603 . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1606 .#define bfd_coff_compute_section_file_positions(abfd)\
1607 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1610 .#define bfd_coff_start_final_link(obfd, info)\
1611 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1613 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1614 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1615 . (obfd, info, ibfd, o, con, rel, isyms, secs))
1616 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1617 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1618 . (abfd, sec, rel, h, sym, addendp))
1619 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1620 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1621 . (obfd, info, ibfd, sec, rel, adjustedp))
1622 .#define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
1623 . value, string, cp, coll, hashp)\
1624 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1625 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1627 .#define bfd_coff_link_output_has_begun(a,p) \
1628 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p))
1629 .#define bfd_coff_final_link_postscript(a,p) \
1630 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
1632 .#define bfd_coff_have_print_pdata(a) \
1633 . (coff_backend_info (a)->_bfd_coff_print_pdata)
1634 .#define bfd_coff_print_pdata(a,p) \
1635 . ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p))
1637 .{* Macro: Returns true if the bfd is a PE executable as opposed to a
1638 . PE object file. *}
1639 .#define bfd_pei_p(abfd) \
1640 . (CONST_STRNEQ ((abfd)->xvec->name, "pei-"))
1643 /* See whether the magic number matches. */
1646 coff_bad_format_hook (bfd * abfd ATTRIBUTE_UNUSED, void * filehdr)
1648 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1650 if (BADMAG (*internal_f))
1658 ticoff0_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED, void * filehdr)
1660 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1662 if (COFF0_BADMAG (*internal_f))
1671 ticoff1_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED, void * filehdr)
1673 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1675 if (COFF1_BADMAG (*internal_f))
1682 /* Check whether this section uses an alignment other than the
1686 coff_set_custom_section_alignment (bfd *abfd ATTRIBUTE_UNUSED,
1688 const struct coff_section_alignment_entry *alignment_table,
1689 const unsigned int table_size)
1691 const unsigned int default_alignment = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1694 for (i = 0; i < table_size; ++i)
1696 const char *secname = bfd_get_section_name (abfd, section);
1698 if (alignment_table[i].comparison_length == (unsigned int) -1
1699 ? strcmp (alignment_table[i].name, secname) == 0
1700 : strncmp (alignment_table[i].name, secname,
1701 alignment_table[i].comparison_length) == 0)
1704 if (i >= table_size)
1707 if (alignment_table[i].default_alignment_min != COFF_ALIGNMENT_FIELD_EMPTY
1708 && default_alignment < alignment_table[i].default_alignment_min)
1711 if (alignment_table[i].default_alignment_max != COFF_ALIGNMENT_FIELD_EMPTY
1712 #if COFF_DEFAULT_SECTION_ALIGNMENT_POWER != 0
1713 && default_alignment > alignment_table[i].default_alignment_max
1718 section->alignment_power = alignment_table[i].alignment_power;
1721 /* Custom section alignment records. */
1723 static const struct coff_section_alignment_entry
1724 coff_section_alignment_table[] =
1726 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1727 COFF_SECTION_ALIGNMENT_ENTRIES,
1729 /* There must not be any gaps between .stabstr sections. */
1730 { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1731 1, COFF_ALIGNMENT_FIELD_EMPTY, 0 },
1732 /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */
1733 { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1734 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1735 /* Similarly for the .ctors and .dtors sections. */
1736 { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1737 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1738 { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1739 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }
1742 static const unsigned int coff_section_alignment_table_size =
1743 sizeof coff_section_alignment_table / sizeof coff_section_alignment_table[0];
1745 /* Initialize a section structure with information peculiar to this
1746 particular implementation of COFF. */
1749 coff_new_section_hook (bfd * abfd, asection * section)
1751 combined_entry_type *native;
1753 unsigned char sclass = C_STAT;
1755 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1758 if (bfd_xcoff_text_align_power (abfd) != 0
1759 && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
1760 section->alignment_power = bfd_xcoff_text_align_power (abfd);
1761 else if (bfd_xcoff_data_align_power (abfd) != 0
1762 && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
1763 section->alignment_power = bfd_xcoff_data_align_power (abfd);
1768 for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++)
1769 if (strcmp (bfd_get_section_name (abfd, section),
1770 xcoff_dwsect_names[i].name) == 0)
1772 section->alignment_power = 0;
1779 /* Set up the section symbol. */
1780 if (!_bfd_generic_new_section_hook (abfd, section))
1783 /* Allocate aux records for section symbols, to store size and
1786 @@ The 10 is a guess at a plausible maximum number of aux entries
1787 (but shouldn't be a constant). */
1788 amt = sizeof (combined_entry_type) * 10;
1789 native = (combined_entry_type *) bfd_zalloc (abfd, amt);
1793 /* We don't need to set up n_name, n_value, or n_scnum in the native
1794 symbol information, since they'll be overridden by the BFD symbol
1795 anyhow. However, we do need to set the type and storage class,
1796 in case this symbol winds up getting written out. The value 0
1797 for n_numaux is already correct. */
1799 native->is_sym = TRUE;
1800 native->u.syment.n_type = T_NULL;
1801 native->u.syment.n_sclass = sclass;
1803 coffsymbol (section->symbol)->native = native;
1805 coff_set_custom_section_alignment (abfd, section,
1806 coff_section_alignment_table,
1807 coff_section_alignment_table_size);
1812 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1814 /* Set the alignment of a BFD section. */
1817 coff_set_alignment_hook (bfd * abfd ATTRIBUTE_UNUSED,
1821 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1824 #ifdef COFF_DECODE_ALIGNMENT
1825 i = COFF_DECODE_ALIGNMENT(hdr->s_flags);
1827 section->alignment_power = i;
1829 #ifdef coff_set_section_load_page
1830 coff_set_section_load_page (section, hdr->s_page);
1834 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1838 coff_set_alignment_hook (bfd * abfd ATTRIBUTE_UNUSED,
1842 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1844 unsigned int alignment_power_const
1845 = hdr->s_flags & IMAGE_SCN_ALIGN_POWER_BIT_MASK;
1847 switch (alignment_power_const)
1849 case IMAGE_SCN_ALIGN_8192BYTES:
1850 case IMAGE_SCN_ALIGN_4096BYTES:
1851 case IMAGE_SCN_ALIGN_2048BYTES:
1852 case IMAGE_SCN_ALIGN_1024BYTES:
1853 case IMAGE_SCN_ALIGN_512BYTES:
1854 case IMAGE_SCN_ALIGN_256BYTES:
1855 case IMAGE_SCN_ALIGN_128BYTES:
1856 case IMAGE_SCN_ALIGN_64BYTES:
1857 case IMAGE_SCN_ALIGN_32BYTES:
1858 case IMAGE_SCN_ALIGN_16BYTES:
1859 case IMAGE_SCN_ALIGN_8BYTES:
1860 case IMAGE_SCN_ALIGN_4BYTES:
1861 case IMAGE_SCN_ALIGN_2BYTES:
1862 case IMAGE_SCN_ALIGN_1BYTES:
1863 section->alignment_power
1864 = IMAGE_SCN_ALIGN_POWER_NUM (alignment_power_const);
1870 /* In a PE image file, the s_paddr field holds the virtual size of a
1871 section, while the s_size field holds the raw size. We also keep
1872 the original section flag value, since not every bit can be
1873 mapped onto a generic BFD section bit. */
1874 if (coff_section_data (abfd, section) == NULL)
1876 amt = sizeof (struct coff_section_tdata);
1877 section->used_by_bfd = bfd_zalloc (abfd, amt);
1878 if (section->used_by_bfd == NULL)
1879 /* FIXME: Return error. */
1883 if (pei_section_data (abfd, section) == NULL)
1885 amt = sizeof (struct pei_section_tdata);
1886 coff_section_data (abfd, section)->tdata = bfd_zalloc (abfd, amt);
1887 if (coff_section_data (abfd, section)->tdata == NULL)
1888 /* FIXME: Return error. */
1891 pei_section_data (abfd, section)->virt_size = hdr->s_paddr;
1892 pei_section_data (abfd, section)->pe_flags = hdr->s_flags;
1894 section->lma = hdr->s_vaddr;
1896 /* Check for extended relocs. */
1897 if (hdr->s_flags & IMAGE_SCN_LNK_NRELOC_OVFL)
1899 struct external_reloc dst;
1900 struct internal_reloc n;
1901 file_ptr oldpos = bfd_tell (abfd);
1902 bfd_size_type relsz = bfd_coff_relsz (abfd);
1904 if (bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0) != 0)
1906 if (bfd_bread (& dst, relsz, abfd) != relsz)
1909 coff_swap_reloc_in (abfd, &dst, &n);
1910 if (bfd_seek (abfd, oldpos, 0) != 0)
1912 section->reloc_count = hdr->s_nreloc = n.r_vaddr - 1;
1913 section->rel_filepos += relsz;
1915 else if (hdr->s_nreloc == 0xffff)
1917 (_("%pB: warning: claims to have 0xffff relocs, without overflow"),
1921 #undef ELIFALIGN_SET
1923 #else /* ! COFF_WITH_PE */
1926 /* We grossly abuse this function to handle XCOFF overflow headers.
1927 When we see one, we correct the reloc and line number counts in the
1928 real header, and remove the section we just created. */
1931 coff_set_alignment_hook (bfd *abfd, asection *section, void * scnhdr)
1933 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1936 if ((hdr->s_flags & STYP_OVRFLO) == 0)
1939 real_sec = coff_section_from_bfd_index (abfd, (int) hdr->s_nreloc);
1940 if (real_sec == NULL)
1943 real_sec->reloc_count = hdr->s_paddr;
1944 real_sec->lineno_count = hdr->s_vaddr;
1946 if (!bfd_section_removed_from_list (abfd, section))
1948 bfd_section_list_remove (abfd, section);
1949 --abfd->section_count;
1953 #else /* ! RS6000COFF_C */
1956 coff_set_alignment_hook (bfd *abfd ATTRIBUTE_UNUSED,
1957 asection *section ATTRIBUTE_UNUSED,
1958 void *scnhdr ATTRIBUTE_UNUSED)
1962 #endif /* ! RS6000COFF_C */
1963 #endif /* ! COFF_WITH_PE */
1964 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1966 #ifndef coff_mkobject
1969 coff_mkobject (bfd * abfd)
1971 coff_data_type *coff;
1972 bfd_size_type amt = sizeof (coff_data_type);
1974 abfd->tdata.coff_obj_data = bfd_zalloc (abfd, amt);
1975 if (abfd->tdata.coff_obj_data == NULL)
1977 coff = coff_data (abfd);
1978 coff->symbols = NULL;
1979 coff->conversion_table = NULL;
1980 coff->raw_syments = NULL;
1981 coff->relocbase = 0;
1982 coff->local_toc_sym_map = 0;
1984 /* make_abs_section(abfd);*/
1990 /* Create the COFF backend specific information. */
1992 #ifndef coff_mkobject_hook
1994 coff_mkobject_hook (bfd * abfd,
1996 void * aouthdr ATTRIBUTE_UNUSED)
1998 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1999 coff_data_type *coff;
2001 if (! coff_mkobject (abfd))
2004 coff = coff_data (abfd);
2006 coff->sym_filepos = internal_f->f_symptr;
2008 /* These members communicate important constants about the symbol
2009 table to GDB's symbol-reading code. These `constants'
2010 unfortunately vary among coff implementations... */
2011 coff->local_n_btmask = N_BTMASK;
2012 coff->local_n_btshft = N_BTSHFT;
2013 coff->local_n_tmask = N_TMASK;
2014 coff->local_n_tshift = N_TSHIFT;
2015 coff->local_symesz = bfd_coff_symesz (abfd);
2016 coff->local_auxesz = bfd_coff_auxesz (abfd);
2017 coff->local_linesz = bfd_coff_linesz (abfd);
2019 coff->timestamp = internal_f->f_timdat;
2021 obj_raw_syment_count (abfd) =
2022 obj_conv_table_size (abfd) =
2023 internal_f->f_nsyms;
2026 if ((internal_f->f_flags & F_SHROBJ) != 0)
2027 abfd->flags |= DYNAMIC;
2028 if (aouthdr != NULL && internal_f->f_opthdr >= bfd_coff_aoutsz (abfd))
2030 struct internal_aouthdr *internal_a =
2031 (struct internal_aouthdr *) aouthdr;
2032 struct xcoff_tdata *xcoff;
2034 xcoff = xcoff_data (abfd);
2035 # ifdef U803XTOCMAGIC
2036 xcoff->xcoff64 = internal_f->f_magic == U803XTOCMAGIC;
2040 xcoff->full_aouthdr = TRUE;
2041 xcoff->toc = internal_a->o_toc;
2042 xcoff->sntoc = internal_a->o_sntoc;
2043 xcoff->snentry = internal_a->o_snentry;
2044 bfd_xcoff_text_align_power (abfd) = internal_a->o_algntext;
2045 bfd_xcoff_data_align_power (abfd) = internal_a->o_algndata;
2046 xcoff->modtype = internal_a->o_modtype;
2047 xcoff->cputype = internal_a->o_cputype;
2048 xcoff->maxdata = internal_a->o_maxdata;
2049 xcoff->maxstack = internal_a->o_maxstack;
2054 /* Set the flags field from the COFF header read in. */
2055 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
2060 /* FIXME: I'm not sure this is ever executed, since peicode.h
2061 defines coff_mkobject_hook. */
2062 if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
2063 abfd->flags |= HAS_DEBUG;
2066 if ((internal_f->f_flags & F_GO32STUB) != 0)
2068 coff->go32stub = (char *) bfd_alloc (abfd, (bfd_size_type) GO32_STUBSIZE);
2069 if (coff->go32stub == NULL)
2072 if (coff->go32stub != NULL)
2073 memcpy (coff->go32stub, internal_f->go32stub, GO32_STUBSIZE);
2079 /* Determine the machine architecture and type. FIXME: This is target
2080 dependent because the magic numbers are defined in the target
2081 dependent header files. But there is no particular need for this.
2082 If the magic numbers were moved to a separate file, this function
2083 would be target independent and would also be much more successful
2084 at linking together COFF files for different architectures. */
2087 coff_set_arch_mach_hook (bfd *abfd, void * filehdr)
2089 unsigned long machine;
2090 enum bfd_architecture arch;
2091 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
2093 /* Zero selects the default machine for an arch. */
2095 switch (internal_f->f_magic)
2099 arch = bfd_arch_powerpc;
2105 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler. */
2106 case LYNXCOFFMAGIC: /* Shadows the m68k Lynx number below, sigh. */
2107 arch = bfd_arch_i386;
2112 arch = bfd_arch_i386;
2113 machine = bfd_mach_x86_64;
2118 arch = bfd_arch_ia64;
2125 arch = bfd_arch_arm;
2126 machine = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
2127 if (machine == bfd_mach_arm_unknown)
2129 switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK)
2131 case F_ARM_2: machine = bfd_mach_arm_2; break;
2132 case F_ARM_2a: machine = bfd_mach_arm_2a; break;
2133 case F_ARM_3: machine = bfd_mach_arm_3; break;
2135 case F_ARM_3M: machine = bfd_mach_arm_3M; break;
2136 case F_ARM_4: machine = bfd_mach_arm_4; break;
2137 case F_ARM_4T: machine = bfd_mach_arm_4T; break;
2138 /* The COFF header does not have enough bits available
2139 to cover all the different ARM architectures. So
2140 we interpret F_ARM_5, the highest flag value to mean
2141 "the highest ARM architecture known to BFD" which is
2142 currently the XScale. */
2143 case F_ARM_5: machine = bfd_mach_arm_XScale; break;
2151 #ifdef MC68KBCSMAGIC
2154 #ifdef APOLLOM68KMAGIC
2155 case APOLLOM68KMAGIC:
2157 #ifdef LYNXCOFFMAGIC
2160 arch = bfd_arch_m68k;
2161 machine = bfd_mach_m68020;
2168 arch = bfd_arch_m88k;
2174 arch = bfd_arch_z80;
2175 switch (internal_f->f_flags & F_MACHMASK)
2178 case bfd_mach_z80strict << 12:
2179 case bfd_mach_z80 << 12:
2180 case bfd_mach_z80full << 12:
2181 case bfd_mach_r800 << 12:
2182 machine = ((unsigned)internal_f->f_flags & F_MACHMASK) >> 12;
2191 arch = bfd_arch_z8k;
2192 switch (internal_f->f_flags & F_MACHMASK)
2195 machine = bfd_mach_z8001;
2198 machine = bfd_mach_z8002;
2218 if (xcoff_data (abfd)->cputype != -1)
2219 cputype = xcoff_data (abfd)->cputype & 0xff;
2222 /* We did not get a value from the a.out header. If the
2223 file has not been stripped, we may be able to get the
2224 architecture information from the first symbol, if it
2225 is a .file symbol. */
2226 if (obj_raw_syment_count (abfd) == 0)
2231 struct internal_syment sym;
2232 bfd_size_type amt = bfd_coff_symesz (abfd);
2234 buf = bfd_malloc (amt);
2237 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
2238 || bfd_bread (buf, amt, abfd) != amt)
2243 bfd_coff_swap_sym_in (abfd, buf, & sym);
2244 if (sym.n_sclass == C_FILE)
2245 cputype = sym.n_type & 0xff;
2252 /* FIXME: We don't handle all cases here. */
2257 arch = bfd_xcoff_architecture (abfd);
2258 machine = bfd_xcoff_machine (abfd);
2262 arch = bfd_arch_powerpc;
2263 machine = bfd_mach_ppc_601;
2265 case 2: /* 64 bit PowerPC */
2266 arch = bfd_arch_powerpc;
2267 machine = bfd_mach_ppc_620;
2270 arch = bfd_arch_powerpc;
2271 machine = bfd_mach_ppc;
2274 arch = bfd_arch_rs6000;
2275 machine = bfd_mach_rs6k;
2284 arch = bfd_arch_we32k;
2288 #ifdef SH_ARCH_MAGIC_BIG
2289 case SH_ARCH_MAGIC_BIG:
2290 case SH_ARCH_MAGIC_LITTLE:
2292 case SH_ARCH_MAGIC_WINCE:
2298 #ifdef MIPS_ARCH_MAGIC_WINCE
2299 case MIPS_ARCH_MAGIC_WINCE:
2300 arch = bfd_arch_mips;
2306 arch = bfd_arch_h8500;
2312 #ifdef LYNXCOFFMAGIC
2315 arch = bfd_arch_sparc;
2321 arch = bfd_arch_tic30;
2326 #ifdef TICOFF_TARGET_ARCH
2327 /* This TI COFF section should be used by all new TI COFF v0 targets. */
2329 arch = TICOFF_TARGET_ARCH;
2330 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2336 /* This TI COFF section should be used by all new TI COFF v1/2 targets. */
2337 /* TI COFF1 and COFF2 use the target_id field to specify which arch. */
2340 switch (internal_f->f_target_id)
2344 arch = TICOFF_TARGET_ARCH;
2345 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2349 arch = bfd_arch_obscure;
2351 (_("unrecognized TI COFF target id '0x%x'"),
2352 internal_f->f_target_id);
2358 #ifdef TIC80_ARCH_MAGIC
2359 case TIC80_ARCH_MAGIC:
2360 arch = bfd_arch_tic80;
2366 arch = bfd_arch_mcore;
2372 arch = bfd_arch_w65;
2376 default: /* Unreadable input file type. */
2377 arch = bfd_arch_obscure;
2381 bfd_default_set_arch_mach (abfd, arch, machine);
2386 symname_in_debug_hook (bfd *abfd ATTRIBUTE_UNUSED,
2387 struct internal_syment *sym ATTRIBUTE_UNUSED)
2389 #ifdef SYMNAME_IN_DEBUG
2390 return SYMNAME_IN_DEBUG (sym) != 0;
2399 #define FORCE_SYMNAMES_IN_STRINGS
2402 /* Handle the csect auxent of a C_EXT, C_AIX_WEAKEXT or C_HIDEXT symbol. */
2405 coff_pointerize_aux_hook (bfd *abfd ATTRIBUTE_UNUSED,
2406 combined_entry_type *table_base,
2407 combined_entry_type *symbol,
2408 unsigned int indaux,
2409 combined_entry_type *aux)
2411 BFD_ASSERT (symbol->is_sym);
2412 int n_sclass = symbol->u.syment.n_sclass;
2414 if (CSECT_SYM_P (n_sclass)
2415 && indaux + 1 == symbol->u.syment.n_numaux)
2417 BFD_ASSERT (! aux->is_sym);
2418 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2420 aux->u.auxent.x_csect.x_scnlen.p =
2421 table_base + aux->u.auxent.x_csect.x_scnlen.l;
2422 aux->fix_scnlen = 1;
2425 /* Return TRUE to indicate that the caller should not do any
2426 further work on this auxent. */
2430 /* Return FALSE to indicate that this auxent should be handled by
2436 #define coff_pointerize_aux_hook 0
2437 #endif /* ! RS6000COFF_C */
2439 /* Print an aux entry. This returns TRUE if it has printed it. */
2442 coff_print_aux (bfd *abfd ATTRIBUTE_UNUSED,
2443 FILE *file ATTRIBUTE_UNUSED,
2444 combined_entry_type *table_base ATTRIBUTE_UNUSED,
2445 combined_entry_type *symbol ATTRIBUTE_UNUSED,
2446 combined_entry_type *aux ATTRIBUTE_UNUSED,
2447 unsigned int indaux ATTRIBUTE_UNUSED)
2449 BFD_ASSERT (symbol->is_sym);
2450 BFD_ASSERT (! aux->is_sym);
2452 if (CSECT_SYM_P (symbol->u.syment.n_sclass)
2453 && indaux + 1 == symbol->u.syment.n_numaux)
2455 /* This is a csect entry. */
2456 fprintf (file, "AUX ");
2457 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
2459 BFD_ASSERT (! aux->fix_scnlen);
2460 fprintf (file, "val %5" BFD_VMA_FMT "d",
2461 aux->u.auxent.x_csect.x_scnlen.l);
2465 fprintf (file, "indx ");
2466 if (! aux->fix_scnlen)
2467 fprintf (file, "%4" BFD_VMA_FMT "d",
2468 aux->u.auxent.x_csect.x_scnlen.l);
2470 fprintf (file, "%4ld",
2471 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
2474 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2475 aux->u.auxent.x_csect.x_parmhash,
2476 (unsigned int) aux->u.auxent.x_csect.x_snhash,
2477 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
2478 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
2479 (unsigned int) aux->u.auxent.x_csect.x_smclas,
2480 aux->u.auxent.x_csect.x_stab,
2481 (unsigned int) aux->u.auxent.x_csect.x_snstab);
2486 /* Return FALSE to indicate that no special action was taken. */
2494 To write relocations, the back end steps though the
2495 canonical relocation table and create an
2496 @code{internal_reloc}. The symbol index to use is removed from
2497 the @code{offset} field in the symbol table supplied. The
2498 address comes directly from the sum of the section base
2499 address and the relocation offset; the type is dug directly
2500 from the howto field. Then the @code{internal_reloc} is
2501 swapped into the shape of an @code{external_reloc} and written
2509 /* AUX's ld wants relocations to be sorted. */
2511 compare_arelent_ptr (const void * x, const void * y)
2513 const arelent **a = (const arelent **) x;
2514 const arelent **b = (const arelent **) y;
2515 bfd_size_type aadr = (*a)->address;
2516 bfd_size_type badr = (*b)->address;
2518 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
2521 #endif /* TARG_AUX */
2524 coff_write_relocs (bfd * abfd, int first_undef)
2528 for (s = abfd->sections; s != NULL; s = s->next)
2531 struct external_reloc dst;
2538 /* Sort relocations before we write them out. */
2541 amt = s->reloc_count;
2542 amt *= sizeof (arelent *);
2543 p = bfd_malloc (amt);
2546 if (s->reloc_count > 0)
2551 memcpy (p, s->orelocation, (size_t) amt);
2552 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
2557 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
2561 if (obj_pe (abfd) && s->reloc_count >= 0xffff)
2563 /* Encode real count here as first reloc. */
2564 struct internal_reloc n;
2566 memset (& n, 0, sizeof (n));
2567 /* Add one to count *this* reloc (grr). */
2568 n.r_vaddr = s->reloc_count + 1;
2569 coff_swap_reloc_out (abfd, &n, &dst);
2570 if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd),
2571 abfd) != bfd_coff_relsz (abfd))
2576 for (i = 0; i < s->reloc_count; i++)
2578 struct internal_reloc n;
2581 memset (& n, 0, sizeof (n));
2583 /* Now we've renumbered the symbols we know where the
2584 undefined symbols live in the table. Check the reloc
2585 entries for symbols who's output bfd isn't the right one.
2586 This is because the symbol was undefined (which means
2587 that all the pointers are never made to point to the same
2588 place). This is a bad thing,'cause the symbols attached
2589 to the output bfd are indexed, so that the relocation
2590 entries know which symbol index they point to. So we
2591 have to look up the output symbol here. */
2593 if (q->sym_ptr_ptr[0] != NULL && q->sym_ptr_ptr[0]->the_bfd != abfd)
2596 const char *sname = q->sym_ptr_ptr[0]->name;
2597 asymbol **outsyms = abfd->outsymbols;
2599 for (j = first_undef; outsyms[j]; j++)
2601 const char *intable = outsyms[j]->name;
2603 if (strcmp (intable, sname) == 0)
2605 /* Got a hit, so repoint the reloc. */
2606 q->sym_ptr_ptr = outsyms + j;
2612 n.r_vaddr = q->address + s->vma;
2615 /* The 29k const/consth reloc pair is a real kludge. The consth
2616 part doesn't have a symbol; it has an offset. So rebuilt
2618 if (q->howto->type == R_IHCONST)
2619 n.r_symndx = q->addend;
2622 if (q->sym_ptr_ptr && q->sym_ptr_ptr[0] != NULL)
2624 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2625 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q, s))
2627 if ((*q->sym_ptr_ptr)->section == bfd_abs_section_ptr
2628 && ((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0)
2630 /* This is a relocation relative to the absolute symbol. */
2634 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
2635 /* Check to see if the symbol reloc points to a symbol
2636 we don't have in our symbol table. */
2637 if (n.r_symndx > obj_conv_table_size (abfd))
2639 bfd_set_error (bfd_error_bad_value);
2640 /* xgettext:c-format */
2641 _bfd_error_handler (_("%pB: reloc against a non-existent"
2642 " symbol index: %ld"),
2649 #ifdef SWAP_OUT_RELOC_OFFSET
2650 n.r_offset = q->addend;
2654 /* Work out reloc type from what is required. */
2655 SELECT_RELOC (n, q->howto);
2657 n.r_type = q->howto->type;
2659 coff_swap_reloc_out (abfd, &n, &dst);
2661 if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd),
2662 abfd) != bfd_coff_relsz (abfd))
2675 /* Set flags and magic number of a coff file from architecture and machine
2676 type. Result is TRUE if we can represent the arch&type, FALSE if not. */
2679 coff_set_flags (bfd * abfd,
2680 unsigned int *magicp ATTRIBUTE_UNUSED,
2681 unsigned short *flagsp ATTRIBUTE_UNUSED)
2683 switch (bfd_get_arch (abfd))
2688 switch (bfd_get_mach (abfd))
2691 case bfd_mach_z80strict:
2693 case bfd_mach_z80full:
2695 *flagsp = bfd_get_mach (abfd) << 12;
2707 switch (bfd_get_mach (abfd))
2709 case bfd_mach_z8001: *flagsp = F_Z8001; break;
2710 case bfd_mach_z8002: *flagsp = F_Z8002; break;
2711 default: return FALSE;
2717 case bfd_arch_tic30:
2718 *magicp = TIC30MAGIC;
2722 #ifdef TICOFF_DEFAULT_MAGIC
2723 case TICOFF_TARGET_ARCH:
2724 /* If there's no indication of which version we want, use the default. */
2726 *magicp = TICOFF_DEFAULT_MAGIC;
2729 /* We may want to output in a different COFF version. */
2730 switch (abfd->xvec->name[4])
2733 *magicp = TICOFF0MAGIC;
2736 *magicp = TICOFF1MAGIC;
2739 *magicp = TICOFF2MAGIC;
2745 TICOFF_TARGET_MACHINE_SET (flagsp, bfd_get_mach (abfd));
2749 #ifdef TIC80_ARCH_MAGIC
2750 case bfd_arch_tic80:
2751 *magicp = TIC80_ARCH_MAGIC;
2758 * magicp = ARMPEMAGIC;
2760 * magicp = ARMMAGIC;
2763 if (APCS_SET (abfd))
2765 if (APCS_26_FLAG (abfd))
2766 * flagsp |= F_APCS26;
2768 if (APCS_FLOAT_FLAG (abfd))
2769 * flagsp |= F_APCS_FLOAT;
2771 if (PIC_FLAG (abfd))
2774 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2775 * flagsp |= F_INTERWORK;
2776 switch (bfd_get_mach (abfd))
2778 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2779 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2780 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2781 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2782 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2783 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2784 case bfd_mach_arm_5: * flagsp |= F_ARM_5; break;
2785 /* FIXME: we do not have F_ARM vaues greater than F_ARM_5.
2786 See also the comment in coff_set_arch_mach_hook(). */
2787 case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break;
2788 case bfd_mach_arm_5TE: * flagsp |= F_ARM_5; break;
2789 case bfd_mach_arm_XScale: * flagsp |= F_ARM_5; break;
2795 case bfd_arch_powerpc:
2800 #if defined(I386MAGIC) || defined(AMD64MAGIC)
2802 #if defined(I386MAGIC)
2803 *magicp = I386MAGIC;
2806 /* Just overwrite the usual value if we're doing Lynx. */
2807 *magicp = LYNXCOFFMAGIC;
2809 #if defined AMD64MAGIC
2810 *magicp = AMD64MAGIC;
2817 *magicp = IA64MAGIC;
2823 #ifdef APOLLOM68KMAGIC
2824 *magicp = APOLLO_COFF_VERSION_NUMBER;
2826 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2827 #ifdef NAMES_HAVE_UNDERSCORE
2828 *magicp = MC68KBCSMAGIC;
2830 *magicp = MC68MAGIC;
2834 /* Just overwrite the usual value if we're doing Lynx. */
2835 *magicp = LYNXCOFFMAGIC;
2842 *magicp = MC88OMAGIC;
2846 #ifdef SH_ARCH_MAGIC_BIG
2848 #ifdef COFF_IMAGE_WITH_PE
2849 *magicp = SH_ARCH_MAGIC_WINCE;
2851 if (bfd_big_endian (abfd))
2852 *magicp = SH_ARCH_MAGIC_BIG;
2854 *magicp = SH_ARCH_MAGIC_LITTLE;
2859 #ifdef MIPS_ARCH_MAGIC_WINCE
2861 *magicp = MIPS_ARCH_MAGIC_WINCE;
2866 case bfd_arch_sparc:
2867 *magicp = SPARCMAGIC;
2869 /* Just overwrite the usual value if we're doing Lynx. */
2870 *magicp = LYNXCOFFMAGIC;
2876 case bfd_arch_h8500:
2877 *magicp = H8500MAGIC;
2883 case bfd_arch_we32k:
2884 *magicp = WE32KMAGIC;
2889 case bfd_arch_rs6000:
2891 case bfd_arch_powerpc:
2893 BFD_ASSERT (bfd_get_flavour (abfd) == bfd_target_xcoff_flavour);
2894 *magicp = bfd_xcoff_magic_number (abfd);
2899 case bfd_arch_mcore:
2900 * magicp = MCOREMAGIC;
2910 default: /* Unknown architecture. */
2911 /* Fall through to "return FALSE" below, to avoid
2912 "statement never reached" errors on the one below. */
2920 coff_set_arch_mach (bfd * abfd,
2921 enum bfd_architecture arch,
2922 unsigned long machine)
2925 unsigned short dummy2;
2927 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2930 if (arch != bfd_arch_unknown
2931 && ! coff_set_flags (abfd, &dummy1, &dummy2))
2932 return FALSE; /* We can't represent this type. */
2934 return TRUE; /* We're easy... */
2937 #ifdef COFF_IMAGE_WITH_PE
2939 /* This is used to sort sections by VMA, as required by PE image
2943 sort_by_secaddr (const void * arg1, const void * arg2)
2945 const asection *a = *(const asection **) arg1;
2946 const asection *b = *(const asection **) arg2;
2948 if (a->vma < b->vma)
2950 else if (a->vma > b->vma)
2956 #endif /* COFF_IMAGE_WITH_PE */
2958 /* Calculate the file position for each section. */
2960 #define ALIGN_SECTIONS_IN_FILE
2961 #if defined(TIC80COFF) || defined(TICOFF)
2962 #undef ALIGN_SECTIONS_IN_FILE
2966 coff_compute_section_file_positions (bfd * abfd)
2969 file_ptr sofar = bfd_coff_filhsz (abfd);
2970 bfd_boolean align_adjust;
2971 unsigned int target_index;
2972 #ifdef ALIGN_SECTIONS_IN_FILE
2973 asection *previous = NULL;
2977 #ifdef COFF_IMAGE_WITH_PE
2980 if (coff_data (abfd)->link_info
2981 || (pe_data (abfd) && pe_data (abfd)->pe_opthdr.FileAlignment))
2983 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
2985 /* If no file alignment has been set, default to one.
2986 This repairs 'ld -r' for arm-wince-pe target. */
2990 /* PR 17512: file: 0ac816d3. */
2993 bfd_set_error (bfd_error_file_too_big);
2995 /* xgettext:c-format */
2996 (_("%pB: page size is too large (0x%x)"), abfd, page_size);
3001 page_size = PE_DEF_FILE_ALIGNMENT;
3003 #ifdef COFF_PAGE_SIZE
3004 int page_size = COFF_PAGE_SIZE;
3009 /* On XCOFF, if we have symbols, set up the .debug section. */
3010 if (bfd_get_symcount (abfd) > 0)
3013 bfd_size_type i, symcount;
3017 symcount = bfd_get_symcount (abfd);
3018 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
3020 coff_symbol_type *cf;
3022 cf = coff_symbol_from (*symp);
3024 && cf->native != NULL
3025 && cf->native->is_sym
3026 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
3030 len = strlen (bfd_asymbol_name (*symp));
3031 if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd))
3032 sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd);
3039 dsec = bfd_make_section_old_way (abfd, DOT_DEBUG);
3043 dsec->flags |= SEC_HAS_CONTENTS;
3048 if (bfd_get_start_address (abfd))
3049 /* A start address may have been added to the original file. In this
3050 case it will need an optional header to record it. */
3051 abfd->flags |= EXEC_P;
3053 if (abfd->flags & EXEC_P)
3054 sofar += bfd_coff_aoutsz (abfd);
3056 else if (xcoff_data (abfd)->full_aouthdr)
3057 sofar += bfd_coff_aoutsz (abfd);
3059 sofar += SMALL_AOUTSZ;
3062 sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
3065 /* XCOFF handles overflows in the reloc and line number count fields
3066 by allocating a new section header to hold the correct counts. */
3067 for (current = abfd->sections; current != NULL; current = current->next)
3068 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3069 sofar += bfd_coff_scnhsz (abfd);
3072 #ifdef COFF_IMAGE_WITH_PE
3074 /* PE requires the sections to be in memory order when listed in
3075 the section headers. It also does not like empty loadable
3076 sections. The sections apparently do not have to be in the
3077 right order in the image file itself, but we do need to get the
3078 target_index values right. */
3081 asection **section_list;
3085 #ifdef COFF_PAGE_SIZE
3086 /* Clear D_PAGED if section alignment is smaller than
3088 if (pe_data (abfd)->pe_opthdr.SectionAlignment < COFF_PAGE_SIZE)
3089 abfd->flags &= ~D_PAGED;
3093 for (current = abfd->sections; current != NULL; current = current->next)
3096 /* We allocate an extra cell to simplify the final loop. */
3097 amt = sizeof (struct asection *) * (count + 1);
3098 section_list = (asection **) bfd_malloc (amt);
3099 if (section_list == NULL)
3103 for (current = abfd->sections; current != NULL; current = current->next)
3105 section_list[i] = current;
3108 section_list[i] = NULL;
3110 qsort (section_list, count, sizeof (asection *), sort_by_secaddr);
3112 /* Rethread the linked list into sorted order; at the same time,
3113 assign target_index values. */
3115 abfd->sections = NULL;
3116 abfd->section_last = NULL;
3117 for (i = 0; i < count; i++)
3119 current = section_list[i];
3120 bfd_section_list_append (abfd, current);
3122 /* Later, if the section has zero size, we'll be throwing it
3123 away, so we don't want to number it now. Note that having
3124 a zero size and having real contents are different
3125 concepts: .bss has no contents, but (usually) non-zero
3127 if (current->size == 0)
3129 /* Discard. However, it still might have (valid) symbols
3130 in it, so arbitrarily set it to section 1 (indexing is
3131 1-based here; usually .text). __end__ and other
3132 contents of .endsection really have this happen.
3133 FIXME: This seems somewhat dubious. */
3134 current->target_index = 1;
3137 current->target_index = target_index++;
3140 free (section_list);
3142 #else /* ! COFF_IMAGE_WITH_PE */
3144 /* Set the target_index field. */
3146 for (current = abfd->sections; current != NULL; current = current->next)
3147 current->target_index = target_index++;
3149 #endif /* ! COFF_IMAGE_WITH_PE */
3151 if (target_index >= bfd_coff_max_nscns (abfd))
3153 bfd_set_error (bfd_error_file_too_big);
3155 /* xgettext:c-format */
3156 (_("%pB: too many sections (%d)"), abfd, target_index);
3160 align_adjust = FALSE;
3161 for (current = abfd->sections;
3163 current = current->next)
3165 #ifdef COFF_IMAGE_WITH_PE
3166 /* With PE we have to pad each section to be a multiple of its
3167 page size too, and remember both sizes. */
3168 if (coff_section_data (abfd, current) == NULL)
3170 bfd_size_type amt = sizeof (struct coff_section_tdata);
3172 current->used_by_bfd = bfd_zalloc (abfd, amt);
3173 if (current->used_by_bfd == NULL)
3176 if (pei_section_data (abfd, current) == NULL)
3178 bfd_size_type amt = sizeof (struct pei_section_tdata);
3180 coff_section_data (abfd, current)->tdata = bfd_zalloc (abfd, amt);
3181 if (coff_section_data (abfd, current)->tdata == NULL)
3184 if (pei_section_data (abfd, current)->virt_size == 0)
3185 pei_section_data (abfd, current)->virt_size = current->size;
3188 /* Only deal with sections which have contents. */
3189 if (!(current->flags & SEC_HAS_CONTENTS))
3192 current->rawsize = current->size;
3194 #ifdef COFF_IMAGE_WITH_PE
3195 /* Make sure we skip empty sections in a PE image. */
3196 if (current->size == 0)
3200 /* Align the sections in the file to the same boundary on
3201 which they are aligned in virtual memory. */
3202 #ifdef ALIGN_SECTIONS_IN_FILE
3203 if ((abfd->flags & EXEC_P) != 0)
3205 /* Make sure this section is aligned on the right boundary - by
3206 padding the previous section up if necessary. */
3209 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3212 /* Make sure the file offset and the vma of .text/.data are at the
3213 same page offset, so that the file can be mmap'ed without being
3214 relocated. Failing that, AIX is able to load and execute the
3215 program, but it will be silently relocated (possible as
3216 executables are PIE). But the relocation is slightly costly and
3217 complexify the use of addr2line or gdb. So better to avoid it,
3218 like does the native linker. Usually gnu ld makes sure that
3219 the vma of .text is the file offset so this issue shouldn't
3220 appear unless you are stripping such an executable.
3222 AIX loader checks the text section alignment of (vma - filepos),
3223 and the native linker doesn't try to align the text sections.
3226 0 .text 000054cc 10000128 10000128 00000128 2**5
3227 CONTENTS, ALLOC, LOAD, CODE
3230 if (!strcmp (current->name, _TEXT)
3231 || !strcmp (current->name, _DATA))
3233 bfd_vma align = 4096;
3234 bfd_vma sofar_off = sofar % align;
3235 bfd_vma vma_off = current->vma % align;
3237 if (vma_off > sofar_off)
3238 sofar += vma_off - sofar_off;
3239 else if (vma_off < sofar_off)
3240 sofar += align + vma_off - sofar_off;
3243 if (previous != NULL)
3244 previous->size += sofar - old_sofar;
3249 /* In demand paged files the low order bits of the file offset
3250 must match the low order bits of the virtual address. */
3251 #ifdef COFF_PAGE_SIZE
3252 if ((abfd->flags & D_PAGED) != 0
3253 && (current->flags & SEC_ALLOC) != 0)
3254 sofar += (current->vma - (bfd_vma) sofar) % page_size;
3256 current->filepos = sofar;
3258 #ifdef COFF_IMAGE_WITH_PE
3259 /* Set the padded size. */
3260 current->size = (current->size + page_size - 1) & -page_size;
3263 sofar += current->size;
3265 #ifdef ALIGN_SECTIONS_IN_FILE
3266 /* Make sure that this section is of the right size too. */
3267 if ((abfd->flags & EXEC_P) == 0)
3269 bfd_size_type old_size;
3271 old_size = current->size;
3272 current->size = BFD_ALIGN (current->size,
3273 1 << current->alignment_power);
3274 align_adjust = current->size != old_size;
3275 sofar += current->size - old_size;
3280 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3281 align_adjust = sofar != old_sofar;
3282 current->size += sofar - old_sofar;
3286 #ifdef COFF_IMAGE_WITH_PE
3287 /* For PE we need to make sure we pad out to the aligned
3288 size, in case the caller only writes out data to the
3290 if (pei_section_data (abfd, current)->virt_size < current->size)
3291 align_adjust = TRUE;
3295 /* Force .lib sections to start at zero. The vma is then
3296 incremented in coff_set_section_contents. This is right for
3298 if (strcmp (current->name, _LIB) == 0)
3299 (void) bfd_set_section_vma (abfd, current, 0);
3302 #ifdef ALIGN_SECTIONS_IN_FILE
3307 /* It is now safe to write to the output file. If we needed an
3308 alignment adjustment for the last section, then make sure that
3309 there is a byte at offset sofar. If there are no symbols and no
3310 relocs, then nothing follows the last section. If we don't force
3311 the last byte out, then the file may appear to be truncated. */
3317 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
3318 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
3322 /* Make sure the relocations are aligned. We don't need to make
3323 sure that this byte exists, because it will only matter if there
3324 really are relocs. */
3325 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
3327 obj_relocbase (abfd) = sofar;
3328 abfd->output_has_begun = TRUE;
3333 #ifdef COFF_IMAGE_WITH_PE
3335 static unsigned int pelength;
3336 static unsigned int peheader;
3339 coff_read_word (bfd *abfd, unsigned int *value)
3344 status = bfd_bread (b, (bfd_size_type) 2, abfd);
3352 *value = (unsigned int) b[0];
3354 *value = (unsigned int) (b[0] + (b[1] << 8));
3356 pelength += (unsigned int) status;
3362 coff_compute_checksum (bfd *abfd)
3364 bfd_boolean more_data;
3371 filepos = (file_ptr) 0;
3375 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
3378 more_data = coff_read_word (abfd, &value);
3380 total = 0xffff & (total + (total >> 0x10));
3385 return (0xffff & (total + (total >> 0x10)));
3389 coff_apply_checksum (bfd *abfd)
3391 unsigned int computed;
3392 unsigned int checksum = 0;
3394 if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0)
3397 if (!coff_read_word (abfd, &peheader))
3400 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3404 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3406 if (bfd_seek (abfd, peheader, SEEK_SET) != 0)
3409 computed = coff_compute_checksum (abfd);
3411 checksum = computed + pelength;
3413 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3416 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3421 #endif /* COFF_IMAGE_WITH_PE */
3424 coff_write_object_contents (bfd * abfd)
3427 bfd_boolean hasrelocs = FALSE;
3428 bfd_boolean haslinno = FALSE;
3429 #ifdef COFF_IMAGE_WITH_PE
3430 bfd_boolean hasdebug = FALSE;
3433 file_ptr reloc_base;
3434 file_ptr lineno_base;
3436 unsigned long reloc_size = 0, reloc_count = 0;
3437 unsigned long lnno_size = 0;
3438 bfd_boolean long_section_names;
3439 asection *text_sec = NULL;
3440 asection *data_sec = NULL;
3441 asection *bss_sec = NULL;
3442 struct internal_filehdr internal_f;
3443 struct internal_aouthdr internal_a;
3444 #ifdef COFF_LONG_SECTION_NAMES
3445 size_t string_size = STRING_SIZE_SIZE;
3448 bfd_set_error (bfd_error_system_call);
3450 /* Make a pass through the symbol table to count line number entries and
3451 put them into the correct asections. */
3452 lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd);
3454 if (! abfd->output_has_begun)
3456 if (! coff_compute_section_file_positions (abfd))
3460 reloc_base = obj_relocbase (abfd);
3462 /* Work out the size of the reloc and linno areas. */
3464 for (current = abfd->sections; current != NULL; current =
3468 /* We store the actual reloc count in the first reloc's addr. */
3469 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3472 reloc_count += current->reloc_count;
3475 reloc_size = reloc_count * bfd_coff_relsz (abfd);
3477 lineno_base = reloc_base + reloc_size;
3478 sym_base = lineno_base + lnno_size;
3480 /* Indicate in each section->line_filepos its actual file address. */
3481 for (current = abfd->sections; current != NULL; current =
3484 if (current->lineno_count)
3486 current->line_filepos = lineno_base;
3487 current->moving_line_filepos = lineno_base;
3488 lineno_base += current->lineno_count * bfd_coff_linesz (abfd);
3491 current->line_filepos = 0;
3493 if (current->reloc_count)
3495 current->rel_filepos = reloc_base;
3496 reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
3498 /* Extra reloc to hold real count. */
3499 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3500 reloc_base += bfd_coff_relsz (abfd);
3504 current->rel_filepos = 0;
3507 /* Write section headers to the file. */
3508 internal_f.f_nscns = 0;
3510 if ((abfd->flags & EXEC_P) != 0)
3511 scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
3514 scn_base = bfd_coff_filhsz (abfd);
3517 if (xcoff_data (abfd)->full_aouthdr)
3518 scn_base += bfd_coff_aoutsz (abfd);
3520 scn_base += SMALL_AOUTSZ;
3525 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
3528 long_section_names = FALSE;
3529 for (current = abfd->sections;
3531 current = current->next)
3533 struct internal_scnhdr section;
3534 #ifdef COFF_IMAGE_WITH_PE
3535 bfd_boolean is_reloc_section = FALSE;
3537 if (strcmp (current->name, DOT_RELOC) == 0)
3539 is_reloc_section = TRUE;
3541 pe_data (abfd)->has_reloc_section = 1;
3545 internal_f.f_nscns++;
3547 strncpy (section.s_name, current->name, SCNNMLEN);
3549 #ifdef COFF_LONG_SECTION_NAMES
3550 /* Handle long section names as in PE. This must be compatible
3551 with the code in coff_write_symbols and _bfd_coff_final_link. */
3552 if (bfd_coff_long_section_names (abfd))
3556 len = strlen (current->name);
3559 /* The s_name field is defined to be NUL-padded but need not be
3560 NUL-terminated. We use a temporary buffer so that we can still
3561 sprintf all eight chars without splatting a terminating NUL
3562 over the first byte of the following member (s_paddr). */
3563 /* PR 21096: The +20 is to stop a bogus warning from gcc7 about
3564 a possible buffer overflow. */
3565 char s_name_buf[SCNNMLEN + 1 + 20];
3567 /* An inherent limitation of the /nnnnnnn notation used to indicate
3568 the offset of the long name in the string table is that we
3569 cannot address entries beyone the ten million byte boundary. */
3570 if (string_size >= 10000000)
3572 bfd_set_error (bfd_error_file_too_big);
3574 /* xgettext:c-format */
3575 (_("%pB: section %pA: string table overflow at offset %ld"),
3576 abfd, current, (unsigned long) string_size);
3580 /* We do not need to use snprintf here as we have already verfied
3581 that string_size is not too big, plus we have an overlarge
3582 buffer, just in case. */
3583 sprintf (s_name_buf, "/%lu", (unsigned long) string_size);
3584 /* Then strncpy takes care of any padding for us. */
3585 strncpy (section.s_name, s_name_buf, SCNNMLEN);
3586 string_size += len + 1;
3587 long_section_names = TRUE;
3593 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3594 Ian Taylor <ian@cygnus.com>. */
3595 if (strcmp (current->name, _LIB) == 0)
3596 section.s_vaddr = 0;
3599 section.s_vaddr = current->vma;
3600 section.s_paddr = current->lma;
3601 section.s_size = current->size;
3602 #ifdef coff_get_section_load_page
3603 section.s_page = coff_get_section_load_page (current);
3609 section.s_paddr = 0;
3611 #ifdef COFF_IMAGE_WITH_PE
3612 /* Reminder: s_paddr holds the virtual size of the section. */
3613 if (coff_section_data (abfd, current) != NULL
3614 && pei_section_data (abfd, current) != NULL)
3615 section.s_paddr = pei_section_data (abfd, current)->virt_size;
3617 section.s_paddr = 0;
3620 /* If this section has no size or is unloadable then the scnptr
3622 if (current->size == 0
3623 || (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
3624 section.s_scnptr = 0;
3626 section.s_scnptr = current->filepos;
3628 section.s_relptr = current->rel_filepos;
3629 section.s_lnnoptr = current->line_filepos;
3630 section.s_nreloc = current->reloc_count;
3631 section.s_nlnno = current->lineno_count;
3632 #ifndef COFF_IMAGE_WITH_PE
3633 /* In PEI, relocs come in the .reloc section. */
3634 if (current->reloc_count != 0)
3637 if (current->lineno_count != 0)
3639 #ifdef COFF_IMAGE_WITH_PE
3640 if ((current->flags & SEC_DEBUGGING) != 0
3641 && ! is_reloc_section)
3647 /* Indicate the use of an XCOFF overflow section header. */
3648 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3650 section.s_nreloc = 0xffff;
3651 section.s_nlnno = 0xffff;
3656 section.s_flags = sec_to_styp_flags (current->name, current->flags);
3658 if (!strcmp (current->name, _TEXT))
3660 else if (!strcmp (current->name, _DATA))
3662 else if (!strcmp (current->name, _BSS))
3665 #ifdef COFF_ENCODE_ALIGNMENT
3666 COFF_ENCODE_ALIGNMENT(section, current->alignment_power);
3667 if ((unsigned int)COFF_DECODE_ALIGNMENT(section.s_flags)
3668 != current->alignment_power)
3670 bfd_boolean warn = coff_data (abfd)->link_info
3671 && !bfd_link_relocatable (coff_data (abfd)->link_info);
3674 /* xgettext:c-format */
3675 (_("%pB:%s section %s: alignment 2**%u not representable"),
3676 abfd, warn ? " warning:" : "", current->name,
3677 current->alignment_power);
3680 bfd_set_error (bfd_error_nonrepresentable_section);
3686 #ifdef COFF_IMAGE_WITH_PE
3687 /* Suppress output of the sections if they are null. ld
3688 includes the bss and data sections even if there is no size
3689 assigned to them. NT loader doesn't like it if these section
3690 headers are included if the sections themselves are not
3691 needed. See also coff_compute_section_file_positions. */
3692 if (section.s_size == 0)
3693 internal_f.f_nscns--;
3698 bfd_size_type amt = bfd_coff_scnhsz (abfd);
3700 if (coff_swap_scnhdr_out (abfd, §ion, &buff) == 0
3701 || bfd_bwrite (& buff, amt, abfd) != amt)
3706 /* PE stores COMDAT section information in the symbol table. If
3707 this section is supposed to have some COMDAT info, track down
3708 the symbol in the symbol table and modify it. */
3709 if ((current->flags & SEC_LINK_ONCE) != 0)
3711 unsigned int i, count;
3713 coff_symbol_type *csym = NULL;
3717 count = bfd_get_symcount (abfd);
3718 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
3720 if ((*psym)->section != current)
3723 /* Remember the location of the first symbol in this
3725 if (psymsec == NULL)
3728 /* See if this is the section symbol. */
3729 if (strcmp ((*psym)->name, current->name) == 0)
3731 csym = coff_symbol_from (*psym);
3733 || csym->native == NULL
3734 || ! csym->native->is_sym
3735 || csym->native->u.syment.n_numaux < 1
3736 || csym->native->u.syment.n_sclass != C_STAT
3737 || csym->native->u.syment.n_type != T_NULL)
3740 /* Here *PSYM is the section symbol for CURRENT. */
3747 Note that we might not if we're converting the file from
3748 some other object file format. */
3751 combined_entry_type *aux;
3753 /* We don't touch the x_checksum field. The
3754 x_associated field is not currently supported. */
3756 aux = csym->native + 1;
3757 BFD_ASSERT (! aux->is_sym);
3758 switch (current->flags & SEC_LINK_DUPLICATES)
3760 case SEC_LINK_DUPLICATES_DISCARD:
3761 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
3764 case SEC_LINK_DUPLICATES_ONE_ONLY:
3765 aux->u.auxent.x_scn.x_comdat =
3766 IMAGE_COMDAT_SELECT_NODUPLICATES;
3769 case SEC_LINK_DUPLICATES_SAME_SIZE:
3770 aux->u.auxent.x_scn.x_comdat =
3771 IMAGE_COMDAT_SELECT_SAME_SIZE;
3774 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
3775 aux->u.auxent.x_scn.x_comdat =
3776 IMAGE_COMDAT_SELECT_EXACT_MATCH;
3780 /* The COMDAT symbol must be the first symbol from this
3781 section in the symbol table. In order to make this
3782 work, we move the COMDAT symbol before the first
3783 symbol we found in the search above. It's OK to
3784 rearrange the symbol table at this point, because
3785 coff_renumber_symbols is going to rearrange it
3786 further and fix up all the aux entries. */
3787 if (psym != psymsec)
3793 for (pcopy = psym; pcopy > psymsec; pcopy--)
3794 pcopy[0] = pcopy[-1];
3799 #endif /* COFF_WITH_PE */
3804 /* XCOFF handles overflows in the reloc and line number count fields
3805 by creating a new section header to hold the correct values. */
3806 for (current = abfd->sections; current != NULL; current = current->next)
3808 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3810 struct internal_scnhdr scnhdr;
3814 internal_f.f_nscns++;
3815 memcpy (scnhdr.s_name, ".ovrflo", 8);
3816 scnhdr.s_paddr = current->reloc_count;
3817 scnhdr.s_vaddr = current->lineno_count;
3819 scnhdr.s_scnptr = 0;
3820 scnhdr.s_relptr = current->rel_filepos;
3821 scnhdr.s_lnnoptr = current->line_filepos;
3822 scnhdr.s_nreloc = current->target_index;
3823 scnhdr.s_nlnno = current->target_index;
3824 scnhdr.s_flags = STYP_OVRFLO;
3825 amt = bfd_coff_scnhsz (abfd);
3826 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
3827 || bfd_bwrite (& buff, amt, abfd) != amt)
3834 /* OK, now set up the filehdr... */
3836 /* Don't include the internal abs section in the section count */
3838 /* We will NOT put a fucking timestamp in the header here. Every time you
3839 put it back, I will come in and take it out again. I'm sorry. This
3840 field does not belong here. We fill it with a 0 so it compares the
3841 same but is not a reasonable time. -- gnu@cygnus.com */
3842 internal_f.f_timdat = 0;
3843 internal_f.f_flags = 0;
3845 if (abfd->flags & EXEC_P)
3846 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3849 internal_f.f_opthdr = 0;
3852 if (xcoff_data (abfd)->full_aouthdr)
3853 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3855 internal_f.f_opthdr = SMALL_AOUTSZ;
3861 internal_f.f_flags |= F_RELFLG;
3863 internal_f.f_flags |= F_LNNO;
3864 if (abfd->flags & EXEC_P)
3865 internal_f.f_flags |= F_EXEC;
3866 #ifdef COFF_IMAGE_WITH_PE
3868 internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED;
3869 if (pe_data (abfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE)
3870 internal_f.f_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
3873 #ifndef COFF_WITH_pex64
3875 internal_f.f_flags |= IMAGE_FILE_32BIT_MACHINE;
3877 if (bfd_little_endian (abfd))
3878 internal_f.f_flags |= F_AR32WR;
3880 internal_f.f_flags |= F_AR32W;
3885 /* Target id is used in TI COFF v1 and later; COFF0 won't use this field,
3886 but it doesn't hurt to set it internally. */
3887 internal_f.f_target_id = TI_TARGET_ID;
3889 #ifdef TIC80_TARGET_ID
3890 internal_f.f_target_id = TIC80_TARGET_ID;
3893 /* FIXME, should do something about the other byte orders and
3897 if ((abfd->flags & DYNAMIC) != 0)
3898 internal_f.f_flags |= F_SHROBJ;
3899 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
3900 internal_f.f_flags |= F_DYNLOAD;
3903 memset (&internal_a, 0, sizeof internal_a);
3905 /* Set up architecture-dependent stuff. */
3907 unsigned int magic = 0;
3908 unsigned short flags = 0;
3910 coff_set_flags (abfd, &magic, &flags);
3911 internal_f.f_magic = magic;
3912 internal_f.f_flags |= flags;
3913 /* ...and the "opt"hdr... */
3915 #ifdef TICOFF_AOUT_MAGIC
3916 internal_a.magic = TICOFF_AOUT_MAGIC;
3917 #define __A_MAGIC_SET__
3920 internal_a.magic = TIC80_ARCH_MAGIC;
3921 #define __A_MAGIC_SET__
3924 #define __A_MAGIC_SET__
3925 internal_a.magic = PAGEMAGICBCS;
3929 #define __A_MAGIC_SET__
3930 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
3933 #if defined(M68) || defined(WE32K) || defined(M68K)
3934 #define __A_MAGIC_SET__
3936 internal_a.magic = LYNXCOFFMAGIC;
3938 #if defined(TARG_AUX)
3939 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
3940 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
3941 PAGEMAGICEXECSWAPPED);
3943 #if defined (PAGEMAGICPEXECPAGED)
3944 internal_a.magic = PAGEMAGICPEXECPAGED;
3946 #endif /* TARG_AUX */
3948 #endif /* M68 || WE32K || M68K */
3951 #define __A_MAGIC_SET__
3952 internal_a.magic = ZMAGIC;
3956 #define __A_MAGIC_SET__
3957 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3960 #if defined MCORE_PE
3961 #define __A_MAGIC_SET__
3962 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3966 #define __A_MAGIC_SET__
3968 internal_a.magic = LYNXCOFFMAGIC;
3970 internal_a.magic = IMAGE_NT_OPTIONAL_HDR64_MAGIC;
3972 internal_a.magic = ZMAGIC;
3977 #define __A_MAGIC_SET__
3978 internal_a.magic = PE32PMAGIC;
3982 #define __A_MAGIC_SET__
3984 internal_a.magic = LYNXCOFFMAGIC;
3989 #define __A_MAGIC_SET__
3990 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
3991 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
3992 RS6K_AOUTHDR_OMAGIC;
3995 #if defined(SH) && defined(COFF_WITH_PE)
3996 #define __A_MAGIC_SET__
3997 internal_a.magic = SH_PE_MAGIC;
4000 #if defined(MIPS) && defined(COFF_WITH_PE)
4001 #define __A_MAGIC_SET__
4002 internal_a.magic = MIPS_PE_MAGIC;
4005 #ifndef __A_MAGIC_SET__
4006 #include "Your aouthdr magic number is not being set!"
4008 #undef __A_MAGIC_SET__
4012 /* FIXME: Does anybody ever set this to another value? */
4013 internal_a.vstamp = 0;
4015 /* Now should write relocs, strings, syms. */
4016 obj_sym_filepos (abfd) = sym_base;
4018 if (bfd_get_symcount (abfd) != 0)
4022 if (!coff_renumber_symbols (abfd, &firstundef))
4024 coff_mangle_symbols (abfd);
4025 if (! coff_write_symbols (abfd))
4027 if (! coff_write_linenumbers (abfd))
4029 if (! coff_write_relocs (abfd, firstundef))
4032 #ifdef COFF_LONG_SECTION_NAMES
4033 else if (long_section_names && ! obj_coff_strings_written (abfd))
4035 /* If we have long section names we have to write out the string
4036 table even if there are no symbols. */
4037 if (! coff_write_symbols (abfd))
4041 #ifdef COFF_IMAGE_WITH_PE
4043 else if ((abfd->flags & EXEC_P) != 0)
4047 /* PowerPC PE appears to require that all executable files be
4048 rounded up to the page size. */
4051 (file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
4053 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
4059 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
4060 backend linker, and obj_raw_syment_count is not valid until after
4061 coff_write_symbols is called. */
4062 if (obj_raw_syment_count (abfd) != 0)
4064 internal_f.f_symptr = sym_base;
4066 /* AIX appears to require that F_RELFLG not be set if there are
4067 local symbols but no relocations. */
4068 internal_f.f_flags &=~ F_RELFLG;
4073 if (long_section_names)
4074 internal_f.f_symptr = sym_base;
4076 internal_f.f_symptr = 0;
4077 internal_f.f_flags |= F_LSYMS;
4082 internal_a.tsize = text_sec->size;
4083 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
4087 internal_a.dsize = data_sec->size;
4088 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
4092 internal_a.bsize = bss_sec->size;
4093 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
4094 internal_a.data_start = bss_sec->vma;
4097 internal_a.entry = bfd_get_start_address (abfd);
4098 internal_f.f_nsyms = obj_raw_syment_count (abfd);
4101 if (xcoff_data (abfd)->full_aouthdr)
4104 asection *loader_sec;
4106 internal_a.vstamp = 1;
4108 internal_a.o_snentry = xcoff_data (abfd)->snentry;
4109 if (internal_a.o_snentry == 0)
4110 internal_a.entry = (bfd_vma) -1;
4112 if (text_sec != NULL)
4114 internal_a.o_sntext = text_sec->target_index;
4115 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
4119 internal_a.o_sntext = 0;
4120 internal_a.o_algntext = 0;
4122 if (data_sec != NULL)
4124 internal_a.o_sndata = data_sec->target_index;
4125 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
4129 internal_a.o_sndata = 0;
4130 internal_a.o_algndata = 0;
4132 loader_sec = bfd_get_section_by_name (abfd, ".loader");
4133 if (loader_sec != NULL)
4134 internal_a.o_snloader = loader_sec->target_index;
4136 internal_a.o_snloader = 0;
4137 if (bss_sec != NULL)
4138 internal_a.o_snbss = bss_sec->target_index;
4140 internal_a.o_snbss = 0;
4142 toc = xcoff_data (abfd)->toc;
4143 internal_a.o_toc = toc;
4144 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
4146 internal_a.o_modtype = xcoff_data (abfd)->modtype;
4147 if (xcoff_data (abfd)->cputype != -1)
4148 internal_a.o_cputype = xcoff_data (abfd)->cputype;
4151 switch (bfd_get_arch (abfd))
4153 case bfd_arch_rs6000:
4154 internal_a.o_cputype = 4;
4156 case bfd_arch_powerpc:
4157 if (bfd_get_mach (abfd) == bfd_mach_ppc)
4158 internal_a.o_cputype = 3;
4160 internal_a.o_cputype = 1;
4166 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
4167 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
4173 /* After object contents are finalized so we can compute a reasonable hash,
4174 but before header is written so we can update it to point to debug directory. */
4175 struct pe_tdata *pe = pe_data (abfd);
4177 if (pe->build_id.after_write_object_contents != NULL)
4178 (*pe->build_id.after_write_object_contents) (abfd);
4182 /* Now write header. */
4183 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
4188 bfd_size_type amount = bfd_coff_filhsz (abfd);
4190 buff = (char *) bfd_malloc (amount);
4194 bfd_coff_swap_filehdr_out (abfd, & internal_f, buff);
4195 amount = bfd_bwrite (buff, amount, abfd);
4199 if (amount != bfd_coff_filhsz (abfd))
4203 if (abfd->flags & EXEC_P)
4205 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
4206 include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)). */
4208 bfd_size_type amount = bfd_coff_aoutsz (abfd);
4210 buff = (char *) bfd_malloc (amount);
4214 coff_swap_aouthdr_out (abfd, & internal_a, buff);
4215 amount = bfd_bwrite (buff, amount, abfd);
4219 if (amount != bfd_coff_aoutsz (abfd))
4222 #ifdef COFF_IMAGE_WITH_PE
4223 if (! coff_apply_checksum (abfd))
4233 /* XCOFF seems to always write at least a small a.out header. */
4234 coff_swap_aouthdr_out (abfd, & internal_a, & buff);
4235 if (xcoff_data (abfd)->full_aouthdr)
4236 size = bfd_coff_aoutsz (abfd);
4238 size = SMALL_AOUTSZ;
4239 if (bfd_bwrite (& buff, (bfd_size_type) size, abfd) != size)
4248 coff_set_section_contents (bfd * abfd,
4250 const void * location,
4252 bfd_size_type count)
4254 if (! abfd->output_has_begun) /* Set by bfd.c handler. */
4256 if (! coff_compute_section_file_positions (abfd))
4260 #if defined(_LIB) && !defined(TARG_AUX)
4261 /* The physical address field of a .lib section is used to hold the
4262 number of shared libraries in the section. This code counts the
4263 number of sections being written, and increments the lma field
4266 I have found no documentation on the contents of this section.
4267 Experimentation indicates that the section contains zero or more
4268 records, each of which has the following structure:
4270 - a (four byte) word holding the length of this record, in words,
4271 - a word that always seems to be set to "2",
4272 - the path to a shared library, null-terminated and then padded
4273 to a whole word boundary.
4275 bfd_assert calls have been added to alert if an attempt is made
4276 to write a section which doesn't follow these assumptions. The
4277 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4278 <robertl@arnet.com> (Thanks!).
4280 Gvran Uddeborg <gvran@uddeborg.pp.se>. */
4281 if (strcmp (section->name, _LIB) == 0)
4283 bfd_byte *rec, *recend;
4285 rec = (bfd_byte *) location;
4286 recend = rec + count;
4287 while (rec < recend)
4290 rec += bfd_get_32 (abfd, rec) * 4;
4293 BFD_ASSERT (rec == recend);
4297 /* Don't write out bss sections - one way to do this is to
4298 see if the filepos has not been set. */
4299 if (section->filepos == 0)
4302 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
4308 return bfd_bwrite (location, count, abfd) == count;
4312 buy_and_read (bfd *abfd, file_ptr where, bfd_size_type size)
4314 void * area = bfd_alloc (abfd, size);
4318 if (bfd_seek (abfd, where, SEEK_SET) != 0
4319 || bfd_bread (area, size, abfd) != size)
4328 Creating the linenumber table is done by reading in the entire
4329 coff linenumber table, and creating another table for internal use.
4331 A coff linenumber table is structured so that each function
4332 is marked as having a line number of 0. Each line within the
4333 function is an offset from the first line in the function. The
4334 base of the line number information for the table is stored in
4335 the symbol associated with the function.
4337 Note: The PE format uses line number 0 for a flag indicating a
4340 The information is copied from the external to the internal
4341 table, and each symbol which marks a function is marked by
4344 How does this work ?
4348 coff_sort_func_alent (const void * arg1, const void * arg2)
4350 const alent *al1 = *(const alent **) arg1;
4351 const alent *al2 = *(const alent **) arg2;
4352 const coff_symbol_type *s1 = (const coff_symbol_type *) (al1->u.sym);
4353 const coff_symbol_type *s2 = (const coff_symbol_type *) (al2->u.sym);
4355 if (s1 == NULL || s2 == NULL)
4357 if (s1->symbol.value < s2->symbol.value)
4359 else if (s1->symbol.value > s2->symbol.value)
4366 coff_slurp_line_table (bfd *abfd, asection *asect)
4368 LINENO *native_lineno;
4369 alent *lineno_cache;
4371 unsigned int counter;
4373 bfd_vma prev_offset = 0;
4374 bfd_boolean ordered = TRUE;
4375 unsigned int nbr_func;
4377 bfd_boolean have_func;
4378 bfd_boolean ret = TRUE;
4380 BFD_ASSERT (asect->lineno == NULL);
4382 if (asect->lineno_count > asect->size)
4385 (_("%pB: warning: line number count (%#lx) exceeds section size (%#lx)"),
4386 abfd, (unsigned long) asect->lineno_count, (unsigned long) asect->size);
4390 amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent);
4391 lineno_cache = (alent *) bfd_alloc (abfd, amt);
4392 if (lineno_cache == NULL)
4395 amt = (bfd_size_type) bfd_coff_linesz (abfd) * asect->lineno_count;
4396 native_lineno = (LINENO *) buy_and_read (abfd, asect->line_filepos, amt);
4397 if (native_lineno == NULL)
4400 (_("%pB: warning: line number table read failed"), abfd);
4401 bfd_release (abfd, lineno_cache);
4405 cache_ptr = lineno_cache;
4406 asect->lineno = lineno_cache;
4407 src = native_lineno;
4411 for (counter = 0; counter < asect->lineno_count; counter++, src++)
4413 struct internal_lineno dst;
4415 bfd_coff_swap_lineno_in (abfd, src, &dst);
4416 cache_ptr->line_number = dst.l_lnno;
4417 /* Appease memory checkers that get all excited about
4418 uninitialised memory when copying alents if u.offset is
4419 larger than u.sym. (64-bit BFD on 32-bit host.) */
4420 memset (&cache_ptr->u, 0, sizeof (cache_ptr->u));
4422 if (cache_ptr->line_number == 0)
4424 combined_entry_type * ent;
4425 unsigned long symndx;
4426 coff_symbol_type *sym;
4429 symndx = dst.l_addr.l_symndx;
4430 if (symndx >= obj_raw_syment_count (abfd))
4433 /* xgettext:c-format */
4434 (_("%pB: warning: illegal symbol index 0x%lx in line number entry %d"),
4435 abfd, symndx, counter);
4436 cache_ptr->line_number = -1;
4441 ent = obj_raw_syments (abfd) + symndx;
4442 /* FIXME: We should not be casting between ints and
4443 pointers like this. */
4447 /* xgettext:c-format */
4448 (_("%pB: warning: illegal symbol index 0x%lx in line number entry %d"),
4449 abfd, symndx, counter);
4450 cache_ptr->line_number = -1;
4454 sym = (coff_symbol_type *) (ent->u.syment._n._n_n._n_zeroes);
4456 /* PR 17512 file: 078-10659-0.004 */
4457 if (sym < obj_symbols (abfd)
4458 || sym >= obj_symbols (abfd) + bfd_get_symcount (abfd))
4461 /* xgettext:c-format */
4462 (_("%pB: warning: illegal symbol in line number entry %d"),
4464 cache_ptr->line_number = -1;
4471 cache_ptr->u.sym = (asymbol *) sym;
4472 if (sym->lineno != NULL)
4474 /* xgettext:c-format */
4475 (_("%pB: warning: duplicate line number information for `%s'"),
4476 abfd, bfd_asymbol_name (&sym->symbol));
4478 sym->lineno = cache_ptr;
4479 if (sym->symbol.value < prev_offset)
4481 prev_offset = sym->symbol.value;
4483 else if (!have_func)
4484 /* Drop line information that has no associated function.
4485 PR 17521: file: 078-10659-0.004. */
4488 cache_ptr->u.offset = (dst.l_addr.l_paddr
4489 - bfd_section_vma (abfd, asect));
4493 asect->lineno_count = cache_ptr - lineno_cache;
4494 memset (cache_ptr, 0, sizeof (*cache_ptr));
4495 bfd_release (abfd, native_lineno);
4497 /* On some systems (eg AIX5.3) the lineno table may not be sorted. */
4500 /* Sort the table. */
4502 alent *n_lineno_cache;
4504 /* Create a table of functions. */
4505 func_table = (alent **) bfd_alloc (abfd, nbr_func * sizeof (alent *));
4506 if (func_table != NULL)
4508 alent **p = func_table;
4511 for (i = 0; i < asect->lineno_count; i++)
4512 if (lineno_cache[i].line_number == 0)
4513 *p++ = &lineno_cache[i];
4515 BFD_ASSERT ((unsigned int) (p - func_table) == nbr_func);
4517 /* Sort by functions. */
4518 qsort (func_table, nbr_func, sizeof (alent *), coff_sort_func_alent);
4520 /* Create the new sorted table. */
4521 amt = (bfd_size_type) asect->lineno_count * sizeof (alent);
4522 n_lineno_cache = (alent *) bfd_alloc (abfd, amt);
4523 if (n_lineno_cache != NULL)
4525 alent *n_cache_ptr = n_lineno_cache;
4527 for (i = 0; i < nbr_func; i++)
4529 coff_symbol_type *sym;
4530 alent *old_ptr = func_table[i];
4532 /* Update the function entry. */
4533 sym = (coff_symbol_type *) old_ptr->u.sym;
4534 /* PR binutils/17512: Point the lineno to where
4535 this entry will be after the memcpy below. */
4536 sym->lineno = lineno_cache + (n_cache_ptr - n_lineno_cache);
4537 /* Copy the function and line number entries. */
4539 *n_cache_ptr++ = *old_ptr++;
4540 while (old_ptr->line_number != 0);
4542 BFD_ASSERT ((bfd_size_type) (n_cache_ptr - n_lineno_cache) == (amt / sizeof (alent)));
4544 memcpy (lineno_cache, n_lineno_cache, amt);
4548 bfd_release (abfd, func_table);
4557 /* Slurp in the symbol table, converting it to generic form. Note
4558 that if coff_relocate_section is defined, the linker will read
4559 symbols via coff_link_add_symbols, rather than via this routine. */
4562 coff_slurp_symbol_table (bfd * abfd)
4564 combined_entry_type *native_symbols;
4565 coff_symbol_type *cached_area;
4566 unsigned int *table_ptr;
4568 unsigned int number_of_symbols = 0;
4569 bfd_boolean ret = TRUE;
4571 if (obj_symbols (abfd))
4574 /* Read in the symbol table. */
4575 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
4578 /* Allocate enough room for all the symbols in cached form. */
4579 amt = obj_raw_syment_count (abfd);
4580 amt *= sizeof (coff_symbol_type);
4581 cached_area = (coff_symbol_type *) bfd_alloc (abfd, amt);
4582 if (cached_area == NULL)
4585 amt = obj_raw_syment_count (abfd);
4586 amt *= sizeof (unsigned int);
4587 table_ptr = (unsigned int *) bfd_zalloc (abfd, amt);
4589 if (table_ptr == NULL)
4593 coff_symbol_type *dst = cached_area;
4594 unsigned int last_native_index = obj_raw_syment_count (abfd);
4595 unsigned int this_index = 0;
4597 while (this_index < last_native_index)
4599 combined_entry_type *src = native_symbols + this_index;
4600 table_ptr[this_index] = number_of_symbols;
4602 dst->symbol.the_bfd = abfd;
4603 BFD_ASSERT (src->is_sym);
4604 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
4605 /* We use the native name field to point to the cached field. */
4606 src->u.syment._n._n_n._n_zeroes = (bfd_hostptr_t) dst;
4607 dst->symbol.section = coff_section_from_bfd_index (abfd,
4608 src->u.syment.n_scnum);
4609 dst->symbol.flags = 0;
4610 /* PR 17512: file: 079-7098-0.001:0.1. */
4611 dst->symbol.value = 0;
4612 dst->done_lineno = FALSE;
4614 switch (src->u.syment.n_sclass)
4620 case C_THUMBEXTFUNC:
4624 #if ! defined _AIX52 && ! defined AIX_WEAK_SUPPORT
4629 case C_SYSTEM: /* System Wide variable. */
4632 /* In PE, 0x68 (104) denotes a section symbol. */
4634 /* In PE, 0x69 (105) denotes a weak external symbol. */
4637 switch (coff_classify_symbol (abfd, &src->u.syment))
4639 case COFF_SYMBOL_GLOBAL:
4640 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4641 #if defined COFF_WITH_PE
4642 /* PE sets the symbol to a value relative to the
4643 start of the section. */
4644 dst->symbol.value = src->u.syment.n_value;
4646 dst->symbol.value = (src->u.syment.n_value
4647 - dst->symbol.section->vma);
4649 if (ISFCN ((src->u.syment.n_type)))
4650 /* A function ext does not go at the end of a
4652 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4655 case COFF_SYMBOL_COMMON:
4656 dst->symbol.section = bfd_com_section_ptr;
4657 dst->symbol.value = src->u.syment.n_value;
4660 case COFF_SYMBOL_UNDEFINED:
4661 dst->symbol.section = bfd_und_section_ptr;
4662 dst->symbol.value = 0;
4665 case COFF_SYMBOL_PE_SECTION:
4666 dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM;
4667 dst->symbol.value = 0;
4670 case COFF_SYMBOL_LOCAL:
4671 dst->symbol.flags = BSF_LOCAL;
4672 #if defined COFF_WITH_PE
4673 /* PE sets the symbol to a value relative to the
4674 start of the section. */
4675 dst->symbol.value = src->u.syment.n_value;
4677 dst->symbol.value = (src->u.syment.n_value
4678 - dst->symbol.section->vma);
4680 if (ISFCN ((src->u.syment.n_type)))
4681 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4686 /* A symbol with a csect entry should not go at the end. */
4687 if (src->u.syment.n_numaux > 0)
4688 dst->symbol.flags |= BSF_NOT_AT_END;
4692 if (src->u.syment.n_sclass == C_NT_WEAK)
4693 dst->symbol.flags |= BSF_WEAK;
4695 if (src->u.syment.n_sclass == C_SECTION
4696 && src->u.syment.n_scnum > 0)
4697 dst->symbol.flags = BSF_LOCAL;
4699 if (src->u.syment.n_sclass == C_WEAKEXT
4701 || src->u.syment.n_sclass == C_AIX_WEAKEXT
4704 dst->symbol.flags |= BSF_WEAK;
4708 case C_STAT: /* Static. */
4710 case C_THUMBSTAT: /* Thumb static. */
4711 case C_THUMBLABEL: /* Thumb label. */
4712 case C_THUMBSTATFUNC:/* Thumb static function. */
4715 case C_DWARF: /* A label in a dwarf section. */
4716 case C_INFO: /* A label in a comment section. */
4718 case C_LABEL: /* Label. */
4719 if (src->u.syment.n_scnum == N_DEBUG)
4720 dst->symbol.flags = BSF_DEBUGGING;
4722 dst->symbol.flags = BSF_LOCAL;
4724 /* Base the value as an index from the base of the
4725 section, if there is one. */
4726 if (dst->symbol.section)
4728 #if defined COFF_WITH_PE
4729 /* PE sets the symbol to a value relative to the
4730 start of the section. */
4731 dst->symbol.value = src->u.syment.n_value;
4733 dst->symbol.value = (src->u.syment.n_value
4734 - dst->symbol.section->vma);
4738 dst->symbol.value = src->u.syment.n_value;
4741 case C_MOS: /* Member of structure. */
4742 case C_EOS: /* End of structure. */
4743 case C_REGPARM: /* Register parameter. */
4744 case C_REG: /* register variable. */
4745 /* C_AUTOARG conflicts with TI COFF C_UEXT. */
4746 case C_TPDEF: /* Type definition. */
4748 case C_AUTO: /* Automatic variable. */
4749 case C_FIELD: /* Bit field. */
4750 case C_ENTAG: /* Enumeration tag. */
4751 case C_MOE: /* Member of enumeration. */
4752 case C_MOU: /* Member of union. */
4753 case C_UNTAG: /* Union tag. */
4754 dst->symbol.flags = BSF_DEBUGGING;
4755 dst->symbol.value = (src->u.syment.n_value);
4758 case C_FILE: /* File name. */
4759 case C_STRTAG: /* Structure tag. */
4776 dst->symbol.flags = BSF_DEBUGGING;
4777 dst->symbol.value = (src->u.syment.n_value);
4781 case C_BINCL: /* Beginning of include file. */
4782 case C_EINCL: /* Ending of include file. */
4783 /* The value is actually a pointer into the line numbers
4784 of the file. We locate the line number entry, and
4785 set the section to the section which contains it, and
4786 the value to the index in that section. */
4790 dst->symbol.flags = BSF_DEBUGGING;
4791 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4792 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
4793 && ((file_ptr) (sec->line_filepos
4794 + sec->lineno_count * bfd_coff_linesz (abfd))
4795 > (file_ptr) src->u.syment.n_value))
4798 dst->symbol.value = 0;
4801 dst->symbol.section = sec;
4802 dst->symbol.value = ((src->u.syment.n_value
4803 - sec->line_filepos)
4804 / bfd_coff_linesz (abfd));
4811 dst->symbol.flags = BSF_DEBUGGING;
4813 /* The value is actually a symbol index. Save a pointer
4814 to the symbol instead of the index. FIXME: This
4815 should use a union. */
4816 src->u.syment.n_value =
4817 (long) (intptr_t) (native_symbols + src->u.syment.n_value);
4818 dst->symbol.value = src->u.syment.n_value;
4823 case C_BLOCK: /* ".bb" or ".eb". */
4824 case C_FCN: /* ".bf" or ".ef" (or PE ".lf"). */
4825 case C_EFCN: /* Physical end of function. */
4826 #if defined COFF_WITH_PE
4827 /* PE sets the symbol to a value relative to the start
4829 dst->symbol.value = src->u.syment.n_value;
4830 if (strcmp (dst->symbol.name, ".bf") != 0)
4832 /* PE uses funny values for .ef and .lf; don't
4834 dst->symbol.flags = BSF_DEBUGGING;
4837 dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC;
4839 /* Base the value as an index from the base of the
4841 dst->symbol.flags = BSF_LOCAL;
4842 dst->symbol.value = (src->u.syment.n_value
4843 - dst->symbol.section->vma);
4847 case C_STATLAB: /* Static load time label. */
4848 dst->symbol.value = src->u.syment.n_value;
4849 dst->symbol.flags = BSF_GLOBAL;
4853 /* PE DLLs sometimes have zeroed out symbols for some
4854 reason. Just ignore them without a warning. */
4855 if (src->u.syment.n_type == 0
4856 && src->u.syment.n_value == 0
4857 && src->u.syment.n_scnum == 0)
4860 /* XCOFF specific: deleted entry. */
4861 if (src->u.syment.n_value == C_NULL_VALUE)
4865 case C_EXTDEF: /* External definition. */
4866 case C_ULABEL: /* Undefined label. */
4867 case C_USTATIC: /* Undefined static. */
4868 #ifndef COFF_WITH_PE
4869 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4870 class to represent a section symbol. */
4871 case C_LINE: /* line # reformatted as symbol table entry. */
4872 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4873 case C_ALIAS: /* Duplicate tag. */
4875 /* New storage classes for TI COFF. */
4876 #if defined(TIC80COFF) || defined(TICOFF)
4877 case C_UEXT: /* Tentative external definition. */
4879 case C_EXTLAB: /* External load time label. */
4882 /* xgettext:c-format */
4883 (_("%pB: unrecognized storage class %d for %s symbol `%s'"),
4884 abfd, src->u.syment.n_sclass,
4885 dst->symbol.section->name, dst->symbol.name);
4888 case C_HIDDEN: /* Ext symbol in dmert public lib. */
4889 /* PR 20722: These symbols can also be generated by
4890 building DLLs with --gc-sections enabled. */
4891 dst->symbol.flags = BSF_DEBUGGING;
4892 dst->symbol.value = (src->u.syment.n_value);
4897 dst->symbol.udata.i = 0;
4900 this_index += (src->u.syment.n_numaux) + 1;
4902 number_of_symbols++;
4906 obj_symbols (abfd) = cached_area;
4907 obj_raw_syments (abfd) = native_symbols;
4909 bfd_get_symcount (abfd) = number_of_symbols;
4910 obj_convert (abfd) = table_ptr;
4911 /* Slurp the line tables for each section too. */
4918 if (! coff_slurp_line_table (abfd, p))
4927 /* Classify a COFF symbol. A couple of targets have globally visible
4928 symbols which are not class C_EXT, and this handles those. It also
4929 recognizes some special PE cases. */
4931 static enum coff_symbol_classification
4932 coff_classify_symbol (bfd *abfd,
4933 struct internal_syment *syment)
4935 /* FIXME: This partially duplicates the switch in
4936 coff_slurp_symbol_table. */
4937 switch (syment->n_sclass)
4943 case C_THUMBEXTFUNC:
4951 if (syment->n_scnum == 0)
4953 if (syment->n_value == 0)
4954 return COFF_SYMBOL_UNDEFINED;
4956 return COFF_SYMBOL_COMMON;
4958 return COFF_SYMBOL_GLOBAL;
4965 if (syment->n_sclass == C_STAT)
4967 if (syment->n_scnum == 0)
4968 /* The Microsoft compiler sometimes generates these if a
4969 small static function is inlined every time it is used.
4970 The function is discarded, but the symbol table entry
4972 return COFF_SYMBOL_LOCAL;
4974 #ifdef STRICT_PE_FORMAT
4975 /* This is correct for Microsoft generated objects, but it
4976 breaks gas generated objects. */
4977 if (syment->n_value == 0)
4981 char buf[SYMNMLEN + 1];
4983 name = _bfd_coff_internal_syment_name (abfd, syment, buf)
4984 sec = coff_section_from_bfd_index (abfd, syment->n_scnum);
4985 if (sec != NULL && name != NULL
4986 && (strcmp (bfd_get_section_name (abfd, sec), name) == 0))
4987 return COFF_SYMBOL_PE_SECTION;
4991 return COFF_SYMBOL_LOCAL;
4994 if (syment->n_sclass == C_SECTION)
4996 /* In some cases in a DLL generated by the Microsoft linker, the
4997 n_value field will contain garbage. FIXME: This should
4998 probably be handled by the swapping function instead. */
4999 syment->n_value = 0;
5000 if (syment->n_scnum == 0)
5001 return COFF_SYMBOL_UNDEFINED;
5002 return COFF_SYMBOL_PE_SECTION;
5004 #endif /* COFF_WITH_PE */
5006 /* If it is not a global symbol, we presume it is a local symbol. */
5007 if (syment->n_scnum == 0)
5009 char buf[SYMNMLEN + 1];
5012 /* xgettext:c-format */
5013 (_("warning: %pB: local symbol `%s' has no section"),
5014 abfd, _bfd_coff_internal_syment_name (abfd, syment, buf));
5017 return COFF_SYMBOL_LOCAL;
5024 Coff relocations are easily transformed into the internal BFD form
5027 Reading a coff relocation table is done in the following stages:
5029 o Read the entire coff relocation table into memory.
5031 o Process each relocation in turn; first swap it from the
5032 external to the internal form.
5034 o Turn the symbol referenced in the relocation's symbol index
5035 into a pointer into the canonical symbol table.
5036 This table is the same as the one returned by a call to
5037 @code{bfd_canonicalize_symtab}. The back end will call that
5038 routine and save the result if a canonicalization hasn't been done.
5040 o The reloc index is turned into a pointer to a howto
5041 structure, in a back end specific way. For instance, the 386
5042 uses the @code{r_type} to directly produce an index
5043 into a howto table vector; the 88k subtracts a number from the
5044 @code{r_type} field and creates an addend field.
5048 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
5050 coff_symbol_type *coffsym = NULL; \
5052 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
5053 coffsym = (obj_symbols (abfd) \
5054 + (cache_ptr->sym_ptr_ptr - symbols)); \
5056 coffsym = coff_symbol_from (ptr); \
5057 if (coffsym != NULL \
5058 && coffsym->native->is_sym \
5059 && coffsym->native->u.syment.n_scnum == 0) \
5060 cache_ptr->addend = 0; \
5061 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
5062 && ptr->section != NULL) \
5063 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
5065 cache_ptr->addend = 0; \
5070 coff_slurp_reloc_table (bfd * abfd, sec_ptr asect, asymbol ** symbols)
5072 RELOC *native_relocs;
5073 arelent *reloc_cache;
5078 if (asect->relocation)
5080 if (asect->reloc_count == 0)
5082 if (asect->flags & SEC_CONSTRUCTOR)
5084 if (!coff_slurp_symbol_table (abfd))
5087 amt = (bfd_size_type) bfd_coff_relsz (abfd) * asect->reloc_count;
5088 native_relocs = (RELOC *) buy_and_read (abfd, asect->rel_filepos, amt);
5089 amt = (bfd_size_type) asect->reloc_count * sizeof (arelent);
5090 reloc_cache = (arelent *) bfd_alloc (abfd, amt);
5092 if (reloc_cache == NULL || native_relocs == NULL)
5095 for (idx = 0; idx < asect->reloc_count; idx++)
5097 struct internal_reloc dst;
5098 struct external_reloc *src;
5099 #ifndef RELOC_PROCESSING
5103 cache_ptr = reloc_cache + idx;
5104 src = native_relocs + idx;
5107 coff_swap_reloc_in (abfd, src, &dst);
5109 #ifdef RELOC_PROCESSING
5110 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
5112 cache_ptr->address = dst.r_vaddr;
5114 if (dst.r_symndx != -1 && symbols != NULL)
5116 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
5119 /* xgettext:c-format */
5120 (_("%pB: warning: illegal symbol index %ld in relocs"),
5121 abfd, dst.r_symndx);
5122 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5127 cache_ptr->sym_ptr_ptr = (symbols
5128 + obj_convert (abfd)[dst.r_symndx]);
5129 ptr = *(cache_ptr->sym_ptr_ptr);
5134 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5138 /* The symbols definitions that we have read in have been
5139 relocated as if their sections started at 0. But the offsets
5140 refering to the symbols in the raw data have not been
5141 modified, so we have to have a negative addend to compensate.
5143 Note that symbols which used to be common must be left alone. */
5145 /* Calculate any reloc addend by looking at the symbol. */
5146 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
5149 cache_ptr->address -= asect->vma;
5150 /* !! cache_ptr->section = NULL;*/
5152 /* Fill in the cache_ptr->howto field from dst.r_type. */
5153 RTYPE2HOWTO (cache_ptr, &dst);
5154 #endif /* RELOC_PROCESSING */
5156 if (cache_ptr->howto == NULL)
5159 /* xgettext:c-format */
5160 (_("%pB: illegal relocation type %d at address %#" PRIx64),
5161 abfd, dst.r_type, (uint64_t) dst.r_vaddr);
5162 bfd_set_error (bfd_error_bad_value);
5167 asect->relocation = reloc_cache;
5171 #ifndef coff_rtype_to_howto
5174 /* Get the howto structure for a reloc. This is only used if the file
5175 including this one defines coff_relocate_section to be
5176 _bfd_coff_generic_relocate_section, so it is OK if it does not
5177 always work. It is the responsibility of the including file to
5178 make sure it is reasonable if it is needed. */
5180 static reloc_howto_type *
5181 coff_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
5182 asection *sec ATTRIBUTE_UNUSED,
5183 struct internal_reloc *rel ATTRIBUTE_UNUSED,
5184 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED,
5185 struct internal_syment *sym ATTRIBUTE_UNUSED,
5186 bfd_vma *addendp ATTRIBUTE_UNUSED)
5190 genrel.howto = NULL;
5191 RTYPE2HOWTO (&genrel, rel);
5192 return genrel.howto;
5195 #else /* ! defined (RTYPE2HOWTO) */
5197 #define coff_rtype_to_howto NULL
5199 #endif /* ! defined (RTYPE2HOWTO) */
5200 #endif /* ! defined (coff_rtype_to_howto) */
5202 /* This is stupid. This function should be a boolean predicate. */
5205 coff_canonicalize_reloc (bfd * abfd,
5210 arelent *tblptr = section->relocation;
5211 unsigned int count = 0;
5213 if (section->flags & SEC_CONSTRUCTOR)
5215 /* This section has relocs made up by us, they are not in the
5216 file, so take them out of their chain and place them into
5217 the data area provided. */
5218 arelent_chain *chain = section->constructor_chain;
5220 for (count = 0; count < section->reloc_count; count++)
5222 *relptr++ = &chain->relent;
5223 chain = chain->next;
5228 if (! coff_slurp_reloc_table (abfd, section, symbols))
5231 tblptr = section->relocation;
5233 for (; count++ < section->reloc_count;)
5234 *relptr++ = tblptr++;
5237 return section->reloc_count;
5240 #ifndef coff_set_reloc
5241 #define coff_set_reloc _bfd_generic_set_reloc
5244 #ifndef coff_reloc16_estimate
5245 #define coff_reloc16_estimate dummy_reloc16_estimate
5248 dummy_reloc16_estimate (bfd *abfd ATTRIBUTE_UNUSED,
5249 asection *input_section ATTRIBUTE_UNUSED,
5250 arelent *reloc ATTRIBUTE_UNUSED,
5251 unsigned int shrink ATTRIBUTE_UNUSED,
5252 struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
5260 #ifndef coff_reloc16_extra_cases
5262 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
5264 /* This works even if abort is not declared in any header file. */
5267 dummy_reloc16_extra_cases (bfd *abfd ATTRIBUTE_UNUSED,
5268 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
5269 struct bfd_link_order *link_order ATTRIBUTE_UNUSED,
5270 arelent *reloc ATTRIBUTE_UNUSED,
5271 bfd_byte *data ATTRIBUTE_UNUSED,
5272 unsigned int *src_ptr ATTRIBUTE_UNUSED,
5273 unsigned int *dst_ptr ATTRIBUTE_UNUSED)
5279 /* If coff_relocate_section is defined, we can use the optimized COFF
5280 backend linker. Otherwise we must continue to use the old linker. */
5282 #ifdef coff_relocate_section
5284 #ifndef coff_bfd_link_hash_table_create
5285 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
5287 #ifndef coff_bfd_link_add_symbols
5288 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
5290 #ifndef coff_bfd_final_link
5291 #define coff_bfd_final_link _bfd_coff_final_link
5294 #else /* ! defined (coff_relocate_section) */
5296 #define coff_relocate_section NULL
5297 #ifndef coff_bfd_link_hash_table_create
5298 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
5300 #ifndef coff_bfd_link_add_symbols
5301 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
5303 #define coff_bfd_final_link _bfd_generic_final_link
5305 #endif /* ! defined (coff_relocate_section) */
5307 #define coff_bfd_link_just_syms _bfd_generic_link_just_syms
5308 #define coff_bfd_copy_link_hash_symbol_type \
5309 _bfd_generic_copy_link_hash_symbol_type
5310 #define coff_bfd_link_split_section _bfd_generic_link_split_section
5312 #define coff_bfd_link_check_relocs _bfd_generic_link_check_relocs
5314 #ifndef coff_start_final_link
5315 #define coff_start_final_link NULL
5318 #ifndef coff_adjust_symndx
5319 #define coff_adjust_symndx NULL
5322 #ifndef coff_link_add_one_symbol
5323 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5326 #ifndef coff_link_output_has_begun
5329 coff_link_output_has_begun (bfd * abfd,
5330 struct coff_final_link_info * info ATTRIBUTE_UNUSED)
5332 return abfd->output_has_begun;
5336 #ifndef coff_final_link_postscript
5339 coff_final_link_postscript (bfd * abfd ATTRIBUTE_UNUSED,
5340 struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED)
5346 #ifndef coff_SWAP_aux_in
5347 #define coff_SWAP_aux_in coff_swap_aux_in
5349 #ifndef coff_SWAP_sym_in
5350 #define coff_SWAP_sym_in coff_swap_sym_in
5352 #ifndef coff_SWAP_lineno_in
5353 #define coff_SWAP_lineno_in coff_swap_lineno_in
5355 #ifndef coff_SWAP_aux_out
5356 #define coff_SWAP_aux_out coff_swap_aux_out
5358 #ifndef coff_SWAP_sym_out
5359 #define coff_SWAP_sym_out coff_swap_sym_out
5361 #ifndef coff_SWAP_lineno_out
5362 #define coff_SWAP_lineno_out coff_swap_lineno_out
5364 #ifndef coff_SWAP_reloc_out
5365 #define coff_SWAP_reloc_out coff_swap_reloc_out
5367 #ifndef coff_SWAP_filehdr_out
5368 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5370 #ifndef coff_SWAP_aouthdr_out
5371 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5373 #ifndef coff_SWAP_scnhdr_out
5374 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5376 #ifndef coff_SWAP_reloc_in
5377 #define coff_SWAP_reloc_in coff_swap_reloc_in
5379 #ifndef coff_SWAP_filehdr_in
5380 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5382 #ifndef coff_SWAP_aouthdr_in
5383 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5385 #ifndef coff_SWAP_scnhdr_in
5386 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5389 static bfd_coff_backend_data bfd_coff_std_swap_table ATTRIBUTE_UNUSED =
5391 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5392 coff_SWAP_aux_out, coff_SWAP_sym_out,
5393 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5394 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5395 coff_SWAP_scnhdr_out,
5396 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5397 #ifdef COFF_LONG_FILENAMES
5402 COFF_DEFAULT_LONG_SECTION_NAMES,
5403 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5404 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5409 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5415 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5416 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5417 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5418 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5419 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5420 coff_classify_symbol, coff_compute_section_file_positions,
5421 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5422 coff_adjust_symndx, coff_link_add_one_symbol,
5423 coff_link_output_has_begun, coff_final_link_postscript,
5428 /* COFF0 differs in file/section header size and relocation entry size. */
5430 static bfd_coff_backend_data ticoff0_swap_table =
5432 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5433 coff_SWAP_aux_out, coff_SWAP_sym_out,
5434 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5435 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5436 coff_SWAP_scnhdr_out,
5437 FILHSZ_V0, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ_V0, LINESZ, FILNMLEN,
5438 #ifdef COFF_LONG_FILENAMES
5443 COFF_DEFAULT_LONG_SECTION_NAMES,
5444 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5445 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5450 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5456 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5457 coff_SWAP_reloc_in, ticoff0_bad_format_hook, coff_set_arch_mach_hook,
5458 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5459 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5460 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5461 coff_classify_symbol, coff_compute_section_file_positions,
5462 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5463 coff_adjust_symndx, coff_link_add_one_symbol,
5464 coff_link_output_has_begun, coff_final_link_postscript,
5470 /* COFF1 differs in section header size. */
5472 static bfd_coff_backend_data ticoff1_swap_table =
5474 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5475 coff_SWAP_aux_out, coff_SWAP_sym_out,
5476 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5477 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5478 coff_SWAP_scnhdr_out,
5479 FILHSZ, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5480 #ifdef COFF_LONG_FILENAMES
5485 COFF_DEFAULT_LONG_SECTION_NAMES,
5486 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5487 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5492 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5498 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5499 coff_SWAP_reloc_in, ticoff1_bad_format_hook, coff_set_arch_mach_hook,
5500 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5501 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5502 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5503 coff_classify_symbol, coff_compute_section_file_positions,
5504 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5505 coff_adjust_symndx, coff_link_add_one_symbol,
5506 coff_link_output_has_begun, coff_final_link_postscript,
5507 bfd_pe_print_pdata /* huh */
5511 #ifdef COFF_WITH_PE_BIGOBJ
5512 /* The UID for bigobj files. */
5514 static const char header_bigobj_classid[16] =
5516 0xC7, 0xA1, 0xBA, 0xD1,
5520 0xFA, 0xF6, 0x6A, 0xA4, 0xDC, 0xB8
5523 /* Swap routines. */
5526 coff_bigobj_swap_filehdr_in (bfd * abfd, void * src, void * dst)
5528 struct external_ANON_OBJECT_HEADER_BIGOBJ *filehdr_src =
5529 (struct external_ANON_OBJECT_HEADER_BIGOBJ *) src;
5530 struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst;
5532 filehdr_dst->f_magic = H_GET_16 (abfd, filehdr_src->Machine);
5533 filehdr_dst->f_nscns = H_GET_32 (abfd, filehdr_src->NumberOfSections);
5534 filehdr_dst->f_timdat = H_GET_32 (abfd, filehdr_src->TimeDateStamp);
5535 filehdr_dst->f_symptr =
5536 GET_FILEHDR_SYMPTR (abfd, filehdr_src->PointerToSymbolTable);
5537 filehdr_dst->f_nsyms = H_GET_32 (abfd, filehdr_src->NumberOfSymbols);
5538 filehdr_dst->f_opthdr = 0;
5539 filehdr_dst->f_flags = 0;
5541 /* Check other magic numbers. */
5542 if (H_GET_16 (abfd, filehdr_src->Sig1) != IMAGE_FILE_MACHINE_UNKNOWN
5543 || H_GET_16 (abfd, filehdr_src->Sig2) != 0xffff
5544 || H_GET_16 (abfd, filehdr_src->Version) != 2
5545 || memcmp (filehdr_src->ClassID, header_bigobj_classid, 16) != 0)
5546 filehdr_dst->f_opthdr = 0xffff;
5548 /* Note that CLR metadata are ignored. */
5552 coff_bigobj_swap_filehdr_out (bfd *abfd, void * in, void * out)
5554 struct internal_filehdr *filehdr_in = (struct internal_filehdr *) in;
5555 struct external_ANON_OBJECT_HEADER_BIGOBJ *filehdr_out =
5556 (struct external_ANON_OBJECT_HEADER_BIGOBJ *) out;
5558 memset (filehdr_out, 0, sizeof (*filehdr_out));
5560 H_PUT_16 (abfd, IMAGE_FILE_MACHINE_UNKNOWN, filehdr_out->Sig1);
5561 H_PUT_16 (abfd, 0xffff, filehdr_out->Sig2);
5562 H_PUT_16 (abfd, 2, filehdr_out->Version);
5563 memcpy (filehdr_out->ClassID, header_bigobj_classid, 16);
5564 H_PUT_16 (abfd, filehdr_in->f_magic, filehdr_out->Machine);
5565 H_PUT_32 (abfd, filehdr_in->f_nscns, filehdr_out->NumberOfSections);
5566 H_PUT_32 (abfd, filehdr_in->f_timdat, filehdr_out->TimeDateStamp);
5567 PUT_FILEHDR_SYMPTR (abfd, filehdr_in->f_symptr,
5568 filehdr_out->PointerToSymbolTable);
5569 H_PUT_32 (abfd, filehdr_in->f_nsyms, filehdr_out->NumberOfSymbols);
5571 return bfd_coff_filhsz (abfd);
5575 coff_bigobj_swap_sym_in (bfd * abfd, void * ext1, void * in1)
5577 SYMENT_BIGOBJ *ext = (SYMENT_BIGOBJ *) ext1;
5578 struct internal_syment *in = (struct internal_syment *) in1;
5580 if (ext->e.e_name[0] == 0)
5582 in->_n._n_n._n_zeroes = 0;
5583 in->_n._n_n._n_offset = H_GET_32 (abfd, ext->e.e.e_offset);
5587 #if SYMNMLEN != E_SYMNMLEN
5588 #error we need to cope with truncating or extending SYMNMLEN
5590 memcpy (in->_n._n_name, ext->e.e_name, SYMNMLEN);
5594 in->n_value = H_GET_32 (abfd, ext->e_value);
5595 BFD_ASSERT (sizeof (in->n_scnum) >= 4);
5596 in->n_scnum = H_GET_32 (abfd, ext->e_scnum);
5597 in->n_type = H_GET_16 (abfd, ext->e_type);
5598 in->n_sclass = H_GET_8 (abfd, ext->e_sclass);
5599 in->n_numaux = H_GET_8 (abfd, ext->e_numaux);
5603 coff_bigobj_swap_sym_out (bfd * abfd, void * inp, void * extp)
5605 struct internal_syment *in = (struct internal_syment *) inp;
5606 SYMENT_BIGOBJ *ext = (SYMENT_BIGOBJ *) extp;
5608 if (in->_n._n_name[0] == 0)
5610 H_PUT_32 (abfd, 0, ext->e.e.e_zeroes);
5611 H_PUT_32 (abfd, in->_n._n_n._n_offset, ext->e.e.e_offset);
5615 #if SYMNMLEN != E_SYMNMLEN
5616 #error we need to cope with truncating or extending SYMNMLEN
5618 memcpy (ext->e.e_name, in->_n._n_name, SYMNMLEN);
5622 H_PUT_32 (abfd, in->n_value, ext->e_value);
5623 H_PUT_32 (abfd, in->n_scnum, ext->e_scnum);
5625 H_PUT_16 (abfd, in->n_type, ext->e_type);
5626 H_PUT_8 (abfd, in->n_sclass, ext->e_sclass);
5627 H_PUT_8 (abfd, in->n_numaux, ext->e_numaux);
5629 return SYMESZ_BIGOBJ;
5633 coff_bigobj_swap_aux_in (bfd *abfd,
5641 AUXENT_BIGOBJ *ext = (AUXENT_BIGOBJ *) ext1;
5642 union internal_auxent *in = (union internal_auxent *) in1;
5650 memcpy (in->x_file.x_fname, ext->File.Name,
5651 numaux * sizeof (AUXENT_BIGOBJ));
5654 memcpy (in->x_file.x_fname, ext->File.Name, sizeof (ext->File.Name));
5662 in->x_scn.x_scnlen = H_GET_32 (abfd, ext->Section.Length);
5663 in->x_scn.x_nreloc =
5664 H_GET_16 (abfd, ext->Section.NumberOfRelocations);
5665 in->x_scn.x_nlinno =
5666 H_GET_16 (abfd, ext->Section.NumberOfLinenumbers);
5667 in->x_scn.x_checksum = H_GET_32 (abfd, ext->Section.Checksum);
5668 in->x_scn.x_associated = H_GET_16 (abfd, ext->Section.Number)
5669 | (H_GET_16 (abfd, ext->Section.HighNumber) << 16);
5670 in->x_scn.x_comdat = H_GET_8 (abfd, ext->Section.Selection);
5676 in->x_sym.x_tagndx.l = H_GET_32 (abfd, ext->Sym.WeakDefaultSymIndex);
5677 /* Characteristics is ignored. */
5683 coff_bigobj_swap_aux_out (bfd * abfd,
5687 int indx ATTRIBUTE_UNUSED,
5688 int numaux ATTRIBUTE_UNUSED,
5691 union internal_auxent * in = (union internal_auxent *) inp;
5692 AUXENT_BIGOBJ *ext = (AUXENT_BIGOBJ *) extp;
5694 memset (ext, 0, AUXESZ);
5699 memcpy (ext->File.Name, in->x_file.x_fname, sizeof (ext->File.Name));
5708 H_PUT_32 (abfd, in->x_scn.x_scnlen, ext->Section.Length);
5709 H_PUT_16 (abfd, in->x_scn.x_nreloc,
5710 ext->Section.NumberOfRelocations);
5711 H_PUT_16 (abfd, in->x_scn.x_nlinno,
5712 ext->Section.NumberOfLinenumbers);
5713 H_PUT_32 (abfd, in->x_scn.x_checksum, ext->Section.Checksum);
5714 H_PUT_16 (abfd, in->x_scn.x_associated & 0xffff,
5715 ext->Section.Number);
5716 H_PUT_16 (abfd, (in->x_scn.x_associated >> 16),
5717 ext->Section.HighNumber);
5718 H_PUT_8 (abfd, in->x_scn.x_comdat, ext->Section.Selection);
5724 H_PUT_32 (abfd, in->x_sym.x_tagndx.l, ext->Sym.WeakDefaultSymIndex);
5725 H_PUT_32 (abfd, 1, ext->Sym.WeakSearchType);
5730 static bfd_coff_backend_data bigobj_swap_table =
5732 coff_bigobj_swap_aux_in, coff_bigobj_swap_sym_in, coff_SWAP_lineno_in,
5733 coff_bigobj_swap_aux_out, coff_bigobj_swap_sym_out,
5734 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5735 coff_bigobj_swap_filehdr_out, coff_SWAP_aouthdr_out,
5736 coff_SWAP_scnhdr_out,
5737 FILHSZ_BIGOBJ, AOUTSZ, SCNHSZ, SYMESZ_BIGOBJ, AUXESZ_BIGOBJ,
5738 RELSZ, LINESZ, FILNMLEN_BIGOBJ,
5740 COFF_DEFAULT_LONG_SECTION_NAMES,
5741 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5745 coff_bigobj_swap_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5746 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5747 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5748 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5749 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5750 coff_classify_symbol, coff_compute_section_file_positions,
5751 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5752 coff_adjust_symndx, coff_link_add_one_symbol,
5753 coff_link_output_has_begun, coff_final_link_postscript,
5754 bfd_pe_print_pdata /* huh */
5757 #endif /* COFF_WITH_PE_BIGOBJ */
5759 #ifndef coff_close_and_cleanup
5760 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5763 #ifndef coff_bfd_free_cached_info
5764 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5767 #ifndef coff_get_section_contents
5768 #define coff_get_section_contents _bfd_generic_get_section_contents
5771 #ifndef coff_bfd_copy_private_symbol_data
5772 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5775 #ifndef coff_bfd_copy_private_header_data
5776 #define coff_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
5779 #ifndef coff_bfd_copy_private_section_data
5780 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5783 #ifndef coff_bfd_copy_private_bfd_data
5784 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5787 #ifndef coff_bfd_merge_private_bfd_data
5788 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5791 #ifndef coff_bfd_set_private_flags
5792 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5795 #ifndef coff_bfd_print_private_bfd_data
5796 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5799 #ifndef coff_bfd_is_local_label_name
5800 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5803 #ifndef coff_bfd_is_target_special_symbol
5804 #define coff_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
5807 #ifndef coff_read_minisymbols
5808 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5811 #ifndef coff_minisymbol_to_symbol
5812 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5815 /* The reloc lookup routine must be supplied by each individual COFF
5817 #ifndef coff_bfd_reloc_type_lookup
5818 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5820 #ifndef coff_bfd_reloc_name_lookup
5821 #define coff_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
5824 #ifndef coff_bfd_get_relocated_section_contents
5825 #define coff_bfd_get_relocated_section_contents \
5826 bfd_generic_get_relocated_section_contents
5829 #ifndef coff_bfd_relax_section
5830 #define coff_bfd_relax_section bfd_generic_relax_section
5833 #ifndef coff_bfd_gc_sections
5834 #define coff_bfd_gc_sections bfd_coff_gc_sections
5837 #ifndef coff_bfd_lookup_section_flags
5838 #define coff_bfd_lookup_section_flags bfd_generic_lookup_section_flags
5841 #ifndef coff_bfd_merge_sections
5842 #define coff_bfd_merge_sections bfd_generic_merge_sections
5845 #ifndef coff_bfd_is_group_section
5846 #define coff_bfd_is_group_section bfd_generic_is_group_section
5849 #ifndef coff_bfd_discard_group
5850 #define coff_bfd_discard_group bfd_generic_discard_group
5853 #ifndef coff_section_already_linked
5854 #define coff_section_already_linked \
5855 _bfd_coff_section_already_linked
5858 #ifndef coff_bfd_define_common_symbol
5859 #define coff_bfd_define_common_symbol bfd_generic_define_common_symbol
5862 #ifndef coff_bfd_define_start_stop
5863 #define coff_bfd_define_start_stop bfd_generic_define_start_stop
5866 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5867 const bfd_target VAR = \
5870 bfd_target_coff_flavour, \
5871 BFD_ENDIAN_BIG, /* Data byte order is big. */ \
5872 BFD_ENDIAN_BIG, /* Header byte order is big. */ \
5873 /* object flags */ \
5874 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5875 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5876 /* section flags */ \
5877 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5878 UNDER, /* Leading symbol underscore. */ \
5879 '/', /* AR_pad_char. */ \
5880 15, /* AR_max_namelen. */ \
5881 0, /* match priority. */ \
5883 /* Data conversion functions. */ \
5884 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5885 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5886 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5888 /* Header conversion functions. */ \
5889 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5890 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5891 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5893 { /* bfd_check_format. */ \
5894 _bfd_dummy_target, \
5896 bfd_generic_archive_p, \
5899 { /* bfd_set_format. */ \
5900 _bfd_bool_bfd_false_error, \
5902 _bfd_generic_mkarchive, \
5903 _bfd_bool_bfd_false_error \
5905 { /* bfd_write_contents. */ \
5906 _bfd_bool_bfd_false_error, \
5907 coff_write_object_contents, \
5908 _bfd_write_archive_contents, \
5909 _bfd_bool_bfd_false_error \
5912 BFD_JUMP_TABLE_GENERIC (coff), \
5913 BFD_JUMP_TABLE_COPY (coff), \
5914 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5915 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5916 BFD_JUMP_TABLE_SYMBOLS (coff), \
5917 BFD_JUMP_TABLE_RELOCS (coff), \
5918 BFD_JUMP_TABLE_WRITE (coff), \
5919 BFD_JUMP_TABLE_LINK (coff), \
5920 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5927 #define CREATE_BIGHDR_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5928 const bfd_target VAR = \
5931 bfd_target_coff_flavour, \
5932 BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \
5933 BFD_ENDIAN_BIG, /* Header byte order is big. */ \
5934 /* object flags */ \
5935 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5936 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5937 /* section flags */ \
5938 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5939 UNDER, /* Leading symbol underscore. */ \
5940 '/', /* AR_pad_char. */ \
5941 15, /* AR_max_namelen. */ \
5942 0, /* match priority. */ \
5944 /* Data conversion functions. */ \
5945 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5946 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5947 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5949 /* Header conversion functions. */ \
5950 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5951 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5952 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5954 { /* bfd_check_format. */ \
5955 _bfd_dummy_target, \
5957 bfd_generic_archive_p, \
5960 { /* bfd_set_format. */ \
5961 _bfd_bool_bfd_false_error, \
5963 _bfd_generic_mkarchive, \
5964 _bfd_bool_bfd_false_error \
5966 { /* bfd_write_contents. */ \
5967 _bfd_bool_bfd_false_error, \
5968 coff_write_object_contents, \
5969 _bfd_write_archive_contents, \
5970 _bfd_bool_bfd_false_error \
5973 BFD_JUMP_TABLE_GENERIC (coff), \
5974 BFD_JUMP_TABLE_COPY (coff), \
5975 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5976 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5977 BFD_JUMP_TABLE_SYMBOLS (coff), \
5978 BFD_JUMP_TABLE_RELOCS (coff), \
5979 BFD_JUMP_TABLE_WRITE (coff), \
5980 BFD_JUMP_TABLE_LINK (coff), \
5981 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5988 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5989 const bfd_target VAR = \
5992 bfd_target_coff_flavour, \
5993 BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \
5994 BFD_ENDIAN_LITTLE, /* Header byte order is little. */ \
5995 /* object flags */ \
5996 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5997 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5998 /* section flags */ \
5999 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
6000 UNDER, /* Leading symbol underscore. */ \
6001 '/', /* AR_pad_char. */ \
6002 15, /* AR_max_namelen. */ \
6003 0, /* match priority. */ \
6005 /* Data conversion functions. */ \
6006 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
6007 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
6008 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
6009 /* Header conversion functions. */ \
6010 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
6011 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
6012 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
6014 { /* bfd_check_format. */ \
6015 _bfd_dummy_target, \
6017 bfd_generic_archive_p, \
6020 { /* bfd_set_format. */ \
6021 _bfd_bool_bfd_false_error, \
6023 _bfd_generic_mkarchive, \
6024 _bfd_bool_bfd_false_error \
6026 { /* bfd_write_contents. */ \
6027 _bfd_bool_bfd_false_error, \
6028 coff_write_object_contents, \
6029 _bfd_write_archive_contents, \
6030 _bfd_bool_bfd_false_error \
6033 BFD_JUMP_TABLE_GENERIC (coff), \
6034 BFD_JUMP_TABLE_COPY (coff), \
6035 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
6036 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
6037 BFD_JUMP_TABLE_SYMBOLS (coff), \
6038 BFD_JUMP_TABLE_RELOCS (coff), \
6039 BFD_JUMP_TABLE_WRITE (coff), \
6040 BFD_JUMP_TABLE_LINK (coff), \
6041 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \