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 #ifdef LYNXCOFFMAGIC
2309 arch = bfd_arch_sparc;
2315 arch = bfd_arch_tic30;
2320 #ifdef TICOFF_TARGET_ARCH
2321 /* This TI COFF section should be used by all new TI COFF v0 targets. */
2323 arch = TICOFF_TARGET_ARCH;
2324 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2330 /* This TI COFF section should be used by all new TI COFF v1/2 targets. */
2331 /* TI COFF1 and COFF2 use the target_id field to specify which arch. */
2334 switch (internal_f->f_target_id)
2338 arch = TICOFF_TARGET_ARCH;
2339 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2343 arch = bfd_arch_obscure;
2345 (_("unrecognized TI COFF target id '0x%x'"),
2346 internal_f->f_target_id);
2352 #ifdef TIC80_ARCH_MAGIC
2353 case TIC80_ARCH_MAGIC:
2354 arch = bfd_arch_tic80;
2360 arch = bfd_arch_mcore;
2366 arch = bfd_arch_w65;
2370 default: /* Unreadable input file type. */
2371 arch = bfd_arch_obscure;
2375 bfd_default_set_arch_mach (abfd, arch, machine);
2380 symname_in_debug_hook (bfd *abfd ATTRIBUTE_UNUSED,
2381 struct internal_syment *sym ATTRIBUTE_UNUSED)
2383 #ifdef SYMNAME_IN_DEBUG
2384 return SYMNAME_IN_DEBUG (sym) != 0;
2393 #define FORCE_SYMNAMES_IN_STRINGS
2396 /* Handle the csect auxent of a C_EXT, C_AIX_WEAKEXT or C_HIDEXT symbol. */
2399 coff_pointerize_aux_hook (bfd *abfd ATTRIBUTE_UNUSED,
2400 combined_entry_type *table_base,
2401 combined_entry_type *symbol,
2402 unsigned int indaux,
2403 combined_entry_type *aux)
2405 BFD_ASSERT (symbol->is_sym);
2406 int n_sclass = symbol->u.syment.n_sclass;
2408 if (CSECT_SYM_P (n_sclass)
2409 && indaux + 1 == symbol->u.syment.n_numaux)
2411 BFD_ASSERT (! aux->is_sym);
2412 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2414 aux->u.auxent.x_csect.x_scnlen.p =
2415 table_base + aux->u.auxent.x_csect.x_scnlen.l;
2416 aux->fix_scnlen = 1;
2419 /* Return TRUE to indicate that the caller should not do any
2420 further work on this auxent. */
2424 /* Return FALSE to indicate that this auxent should be handled by
2430 #define coff_pointerize_aux_hook 0
2431 #endif /* ! RS6000COFF_C */
2433 /* Print an aux entry. This returns TRUE if it has printed it. */
2436 coff_print_aux (bfd *abfd ATTRIBUTE_UNUSED,
2437 FILE *file ATTRIBUTE_UNUSED,
2438 combined_entry_type *table_base ATTRIBUTE_UNUSED,
2439 combined_entry_type *symbol ATTRIBUTE_UNUSED,
2440 combined_entry_type *aux ATTRIBUTE_UNUSED,
2441 unsigned int indaux ATTRIBUTE_UNUSED)
2443 BFD_ASSERT (symbol->is_sym);
2444 BFD_ASSERT (! aux->is_sym);
2446 if (CSECT_SYM_P (symbol->u.syment.n_sclass)
2447 && indaux + 1 == symbol->u.syment.n_numaux)
2449 /* This is a csect entry. */
2450 fprintf (file, "AUX ");
2451 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
2453 BFD_ASSERT (! aux->fix_scnlen);
2454 fprintf (file, "val %5" BFD_VMA_FMT "d",
2455 aux->u.auxent.x_csect.x_scnlen.l);
2459 fprintf (file, "indx ");
2460 if (! aux->fix_scnlen)
2461 fprintf (file, "%4" BFD_VMA_FMT "d",
2462 aux->u.auxent.x_csect.x_scnlen.l);
2464 fprintf (file, "%4ld",
2465 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
2468 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2469 aux->u.auxent.x_csect.x_parmhash,
2470 (unsigned int) aux->u.auxent.x_csect.x_snhash,
2471 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
2472 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
2473 (unsigned int) aux->u.auxent.x_csect.x_smclas,
2474 aux->u.auxent.x_csect.x_stab,
2475 (unsigned int) aux->u.auxent.x_csect.x_snstab);
2480 /* Return FALSE to indicate that no special action was taken. */
2488 To write relocations, the back end steps though the
2489 canonical relocation table and create an
2490 @code{internal_reloc}. The symbol index to use is removed from
2491 the @code{offset} field in the symbol table supplied. The
2492 address comes directly from the sum of the section base
2493 address and the relocation offset; the type is dug directly
2494 from the howto field. Then the @code{internal_reloc} is
2495 swapped into the shape of an @code{external_reloc} and written
2503 /* AUX's ld wants relocations to be sorted. */
2505 compare_arelent_ptr (const void * x, const void * y)
2507 const arelent **a = (const arelent **) x;
2508 const arelent **b = (const arelent **) y;
2509 bfd_size_type aadr = (*a)->address;
2510 bfd_size_type badr = (*b)->address;
2512 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
2515 #endif /* TARG_AUX */
2518 coff_write_relocs (bfd * abfd, int first_undef)
2522 for (s = abfd->sections; s != NULL; s = s->next)
2525 struct external_reloc dst;
2532 /* Sort relocations before we write them out. */
2535 amt = s->reloc_count;
2536 amt *= sizeof (arelent *);
2537 p = bfd_malloc (amt);
2540 if (s->reloc_count > 0)
2545 memcpy (p, s->orelocation, (size_t) amt);
2546 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
2551 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
2555 if (obj_pe (abfd) && s->reloc_count >= 0xffff)
2557 /* Encode real count here as first reloc. */
2558 struct internal_reloc n;
2560 memset (& n, 0, sizeof (n));
2561 /* Add one to count *this* reloc (grr). */
2562 n.r_vaddr = s->reloc_count + 1;
2563 coff_swap_reloc_out (abfd, &n, &dst);
2564 if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd),
2565 abfd) != bfd_coff_relsz (abfd))
2570 for (i = 0; i < s->reloc_count; i++)
2572 struct internal_reloc n;
2575 memset (& n, 0, sizeof (n));
2577 /* Now we've renumbered the symbols we know where the
2578 undefined symbols live in the table. Check the reloc
2579 entries for symbols who's output bfd isn't the right one.
2580 This is because the symbol was undefined (which means
2581 that all the pointers are never made to point to the same
2582 place). This is a bad thing,'cause the symbols attached
2583 to the output bfd are indexed, so that the relocation
2584 entries know which symbol index they point to. So we
2585 have to look up the output symbol here. */
2587 if (q->sym_ptr_ptr[0] != NULL && q->sym_ptr_ptr[0]->the_bfd != abfd)
2590 const char *sname = q->sym_ptr_ptr[0]->name;
2591 asymbol **outsyms = abfd->outsymbols;
2593 for (j = first_undef; outsyms[j]; j++)
2595 const char *intable = outsyms[j]->name;
2597 if (strcmp (intable, sname) == 0)
2599 /* Got a hit, so repoint the reloc. */
2600 q->sym_ptr_ptr = outsyms + j;
2606 n.r_vaddr = q->address + s->vma;
2609 /* The 29k const/consth reloc pair is a real kludge. The consth
2610 part doesn't have a symbol; it has an offset. So rebuilt
2612 if (q->howto->type == R_IHCONST)
2613 n.r_symndx = q->addend;
2616 if (q->sym_ptr_ptr && q->sym_ptr_ptr[0] != NULL)
2618 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2619 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q, s))
2621 if ((*q->sym_ptr_ptr)->section == bfd_abs_section_ptr
2622 && ((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0)
2624 /* This is a relocation relative to the absolute symbol. */
2628 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
2629 /* Check to see if the symbol reloc points to a symbol
2630 we don't have in our symbol table. */
2631 if (n.r_symndx > obj_conv_table_size (abfd))
2633 bfd_set_error (bfd_error_bad_value);
2634 /* xgettext:c-format */
2635 _bfd_error_handler (_("%pB: reloc against a non-existent"
2636 " symbol index: %ld"),
2643 #ifdef SWAP_OUT_RELOC_OFFSET
2644 n.r_offset = q->addend;
2648 /* Work out reloc type from what is required. */
2649 SELECT_RELOC (n, q->howto);
2651 n.r_type = q->howto->type;
2653 coff_swap_reloc_out (abfd, &n, &dst);
2655 if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd),
2656 abfd) != bfd_coff_relsz (abfd))
2669 /* Set flags and magic number of a coff file from architecture and machine
2670 type. Result is TRUE if we can represent the arch&type, FALSE if not. */
2673 coff_set_flags (bfd * abfd,
2674 unsigned int *magicp ATTRIBUTE_UNUSED,
2675 unsigned short *flagsp ATTRIBUTE_UNUSED)
2677 switch (bfd_get_arch (abfd))
2682 switch (bfd_get_mach (abfd))
2685 case bfd_mach_z80strict:
2687 case bfd_mach_z80full:
2689 *flagsp = bfd_get_mach (abfd) << 12;
2701 switch (bfd_get_mach (abfd))
2703 case bfd_mach_z8001: *flagsp = F_Z8001; break;
2704 case bfd_mach_z8002: *flagsp = F_Z8002; break;
2705 default: return FALSE;
2711 case bfd_arch_tic30:
2712 *magicp = TIC30MAGIC;
2716 #ifdef TICOFF_DEFAULT_MAGIC
2717 case TICOFF_TARGET_ARCH:
2718 /* If there's no indication of which version we want, use the default. */
2720 *magicp = TICOFF_DEFAULT_MAGIC;
2723 /* We may want to output in a different COFF version. */
2724 switch (abfd->xvec->name[4])
2727 *magicp = TICOFF0MAGIC;
2730 *magicp = TICOFF1MAGIC;
2733 *magicp = TICOFF2MAGIC;
2739 TICOFF_TARGET_MACHINE_SET (flagsp, bfd_get_mach (abfd));
2743 #ifdef TIC80_ARCH_MAGIC
2744 case bfd_arch_tic80:
2745 *magicp = TIC80_ARCH_MAGIC;
2752 * magicp = ARMPEMAGIC;
2754 * magicp = ARMMAGIC;
2757 if (APCS_SET (abfd))
2759 if (APCS_26_FLAG (abfd))
2760 * flagsp |= F_APCS26;
2762 if (APCS_FLOAT_FLAG (abfd))
2763 * flagsp |= F_APCS_FLOAT;
2765 if (PIC_FLAG (abfd))
2768 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2769 * flagsp |= F_INTERWORK;
2770 switch (bfd_get_mach (abfd))
2772 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2773 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2774 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2775 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2776 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2777 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2778 case bfd_mach_arm_5: * flagsp |= F_ARM_5; break;
2779 /* FIXME: we do not have F_ARM vaues greater than F_ARM_5.
2780 See also the comment in coff_set_arch_mach_hook(). */
2781 case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break;
2782 case bfd_mach_arm_5TE: * flagsp |= F_ARM_5; break;
2783 case bfd_mach_arm_XScale: * flagsp |= F_ARM_5; break;
2789 case bfd_arch_powerpc:
2794 #if defined(I386MAGIC) || defined(AMD64MAGIC)
2796 #if defined(I386MAGIC)
2797 *magicp = I386MAGIC;
2800 /* Just overwrite the usual value if we're doing Lynx. */
2801 *magicp = LYNXCOFFMAGIC;
2803 #if defined AMD64MAGIC
2804 *magicp = AMD64MAGIC;
2811 *magicp = IA64MAGIC;
2817 #ifdef APOLLOM68KMAGIC
2818 *magicp = APOLLO_COFF_VERSION_NUMBER;
2820 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2821 #ifdef NAMES_HAVE_UNDERSCORE
2822 *magicp = MC68KBCSMAGIC;
2824 *magicp = MC68MAGIC;
2828 /* Just overwrite the usual value if we're doing Lynx. */
2829 *magicp = LYNXCOFFMAGIC;
2836 *magicp = MC88OMAGIC;
2840 #ifdef SH_ARCH_MAGIC_BIG
2842 #ifdef COFF_IMAGE_WITH_PE
2843 *magicp = SH_ARCH_MAGIC_WINCE;
2845 if (bfd_big_endian (abfd))
2846 *magicp = SH_ARCH_MAGIC_BIG;
2848 *magicp = SH_ARCH_MAGIC_LITTLE;
2853 #ifdef MIPS_ARCH_MAGIC_WINCE
2855 *magicp = MIPS_ARCH_MAGIC_WINCE;
2860 case bfd_arch_sparc:
2861 *magicp = SPARCMAGIC;
2863 /* Just overwrite the usual value if we're doing Lynx. */
2864 *magicp = LYNXCOFFMAGIC;
2870 case bfd_arch_we32k:
2871 *magicp = WE32KMAGIC;
2876 case bfd_arch_rs6000:
2878 case bfd_arch_powerpc:
2880 BFD_ASSERT (bfd_get_flavour (abfd) == bfd_target_xcoff_flavour);
2881 *magicp = bfd_xcoff_magic_number (abfd);
2886 case bfd_arch_mcore:
2887 * magicp = MCOREMAGIC;
2897 default: /* Unknown architecture. */
2898 /* Fall through to "return FALSE" below, to avoid
2899 "statement never reached" errors on the one below. */
2907 coff_set_arch_mach (bfd * abfd,
2908 enum bfd_architecture arch,
2909 unsigned long machine)
2912 unsigned short dummy2;
2914 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2917 if (arch != bfd_arch_unknown
2918 && ! coff_set_flags (abfd, &dummy1, &dummy2))
2919 return FALSE; /* We can't represent this type. */
2921 return TRUE; /* We're easy... */
2924 #ifdef COFF_IMAGE_WITH_PE
2926 /* This is used to sort sections by VMA, as required by PE image
2930 sort_by_secaddr (const void * arg1, const void * arg2)
2932 const asection *a = *(const asection **) arg1;
2933 const asection *b = *(const asection **) arg2;
2935 if (a->vma < b->vma)
2937 else if (a->vma > b->vma)
2943 #endif /* COFF_IMAGE_WITH_PE */
2945 /* Calculate the file position for each section. */
2947 #define ALIGN_SECTIONS_IN_FILE
2948 #if defined(TIC80COFF) || defined(TICOFF)
2949 #undef ALIGN_SECTIONS_IN_FILE
2953 coff_compute_section_file_positions (bfd * abfd)
2956 file_ptr sofar = bfd_coff_filhsz (abfd);
2957 bfd_boolean align_adjust;
2958 unsigned int target_index;
2959 #ifdef ALIGN_SECTIONS_IN_FILE
2960 asection *previous = NULL;
2964 #ifdef COFF_IMAGE_WITH_PE
2967 if (coff_data (abfd)->link_info
2968 || (pe_data (abfd) && pe_data (abfd)->pe_opthdr.FileAlignment))
2970 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
2972 /* If no file alignment has been set, default to one.
2973 This repairs 'ld -r' for arm-wince-pe target. */
2977 /* PR 17512: file: 0ac816d3. */
2980 bfd_set_error (bfd_error_file_too_big);
2982 /* xgettext:c-format */
2983 (_("%pB: page size is too large (0x%x)"), abfd, page_size);
2988 page_size = PE_DEF_FILE_ALIGNMENT;
2990 #ifdef COFF_PAGE_SIZE
2991 int page_size = COFF_PAGE_SIZE;
2996 /* On XCOFF, if we have symbols, set up the .debug section. */
2997 if (bfd_get_symcount (abfd) > 0)
3000 bfd_size_type i, symcount;
3004 symcount = bfd_get_symcount (abfd);
3005 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
3007 coff_symbol_type *cf;
3009 cf = coff_symbol_from (*symp);
3011 && cf->native != NULL
3012 && cf->native->is_sym
3013 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
3017 len = strlen (bfd_asymbol_name (*symp));
3018 if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd))
3019 sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd);
3026 dsec = bfd_make_section_old_way (abfd, DOT_DEBUG);
3030 dsec->flags |= SEC_HAS_CONTENTS;
3035 if (bfd_get_start_address (abfd))
3036 /* A start address may have been added to the original file. In this
3037 case it will need an optional header to record it. */
3038 abfd->flags |= EXEC_P;
3040 if (abfd->flags & EXEC_P)
3041 sofar += bfd_coff_aoutsz (abfd);
3043 else if (xcoff_data (abfd)->full_aouthdr)
3044 sofar += bfd_coff_aoutsz (abfd);
3046 sofar += SMALL_AOUTSZ;
3049 sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
3052 /* XCOFF handles overflows in the reloc and line number count fields
3053 by allocating a new section header to hold the correct counts. */
3054 for (current = abfd->sections; current != NULL; current = current->next)
3055 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3056 sofar += bfd_coff_scnhsz (abfd);
3059 #ifdef COFF_IMAGE_WITH_PE
3061 /* PE requires the sections to be in memory order when listed in
3062 the section headers. It also does not like empty loadable
3063 sections. The sections apparently do not have to be in the
3064 right order in the image file itself, but we do need to get the
3065 target_index values right. */
3068 asection **section_list;
3072 #ifdef COFF_PAGE_SIZE
3073 /* Clear D_PAGED if section alignment is smaller than
3075 if (pe_data (abfd)->pe_opthdr.SectionAlignment < COFF_PAGE_SIZE)
3076 abfd->flags &= ~D_PAGED;
3080 for (current = abfd->sections; current != NULL; current = current->next)
3083 /* We allocate an extra cell to simplify the final loop. */
3084 amt = sizeof (struct asection *) * (count + 1);
3085 section_list = (asection **) bfd_malloc (amt);
3086 if (section_list == NULL)
3090 for (current = abfd->sections; current != NULL; current = current->next)
3092 section_list[i] = current;
3095 section_list[i] = NULL;
3097 qsort (section_list, count, sizeof (asection *), sort_by_secaddr);
3099 /* Rethread the linked list into sorted order; at the same time,
3100 assign target_index values. */
3102 abfd->sections = NULL;
3103 abfd->section_last = NULL;
3104 for (i = 0; i < count; i++)
3106 current = section_list[i];
3107 bfd_section_list_append (abfd, current);
3109 /* Later, if the section has zero size, we'll be throwing it
3110 away, so we don't want to number it now. Note that having
3111 a zero size and having real contents are different
3112 concepts: .bss has no contents, but (usually) non-zero
3114 if (current->size == 0)
3116 /* Discard. However, it still might have (valid) symbols
3117 in it, so arbitrarily set it to section 1 (indexing is
3118 1-based here; usually .text). __end__ and other
3119 contents of .endsection really have this happen.
3120 FIXME: This seems somewhat dubious. */
3121 current->target_index = 1;
3124 current->target_index = target_index++;
3127 free (section_list);
3129 #else /* ! COFF_IMAGE_WITH_PE */
3131 /* Set the target_index field. */
3133 for (current = abfd->sections; current != NULL; current = current->next)
3134 current->target_index = target_index++;
3136 #endif /* ! COFF_IMAGE_WITH_PE */
3138 if (target_index >= bfd_coff_max_nscns (abfd))
3140 bfd_set_error (bfd_error_file_too_big);
3142 /* xgettext:c-format */
3143 (_("%pB: too many sections (%d)"), abfd, target_index);
3147 align_adjust = FALSE;
3148 for (current = abfd->sections;
3150 current = current->next)
3152 #ifdef COFF_IMAGE_WITH_PE
3153 /* With PE we have to pad each section to be a multiple of its
3154 page size too, and remember both sizes. */
3155 if (coff_section_data (abfd, current) == NULL)
3157 bfd_size_type amt = sizeof (struct coff_section_tdata);
3159 current->used_by_bfd = bfd_zalloc (abfd, amt);
3160 if (current->used_by_bfd == NULL)
3163 if (pei_section_data (abfd, current) == NULL)
3165 bfd_size_type amt = sizeof (struct pei_section_tdata);
3167 coff_section_data (abfd, current)->tdata = bfd_zalloc (abfd, amt);
3168 if (coff_section_data (abfd, current)->tdata == NULL)
3171 if (pei_section_data (abfd, current)->virt_size == 0)
3172 pei_section_data (abfd, current)->virt_size = current->size;
3175 /* Only deal with sections which have contents. */
3176 if (!(current->flags & SEC_HAS_CONTENTS))
3179 current->rawsize = current->size;
3181 #ifdef COFF_IMAGE_WITH_PE
3182 /* Make sure we skip empty sections in a PE image. */
3183 if (current->size == 0)
3187 /* Align the sections in the file to the same boundary on
3188 which they are aligned in virtual memory. */
3189 #ifdef ALIGN_SECTIONS_IN_FILE
3190 if ((abfd->flags & EXEC_P) != 0)
3192 /* Make sure this section is aligned on the right boundary - by
3193 padding the previous section up if necessary. */
3196 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3199 /* Make sure the file offset and the vma of .text/.data are at the
3200 same page offset, so that the file can be mmap'ed without being
3201 relocated. Failing that, AIX is able to load and execute the
3202 program, but it will be silently relocated (possible as
3203 executables are PIE). But the relocation is slightly costly and
3204 complexify the use of addr2line or gdb. So better to avoid it,
3205 like does the native linker. Usually gnu ld makes sure that
3206 the vma of .text is the file offset so this issue shouldn't
3207 appear unless you are stripping such an executable.
3209 AIX loader checks the text section alignment of (vma - filepos),
3210 and the native linker doesn't try to align the text sections.
3213 0 .text 000054cc 10000128 10000128 00000128 2**5
3214 CONTENTS, ALLOC, LOAD, CODE
3217 if (!strcmp (current->name, _TEXT)
3218 || !strcmp (current->name, _DATA))
3220 bfd_vma align = 4096;
3221 bfd_vma sofar_off = sofar % align;
3222 bfd_vma vma_off = current->vma % align;
3224 if (vma_off > sofar_off)
3225 sofar += vma_off - sofar_off;
3226 else if (vma_off < sofar_off)
3227 sofar += align + vma_off - sofar_off;
3230 if (previous != NULL)
3231 previous->size += sofar - old_sofar;
3236 /* In demand paged files the low order bits of the file offset
3237 must match the low order bits of the virtual address. */
3238 #ifdef COFF_PAGE_SIZE
3239 if ((abfd->flags & D_PAGED) != 0
3240 && (current->flags & SEC_ALLOC) != 0)
3241 sofar += (current->vma - (bfd_vma) sofar) % page_size;
3243 current->filepos = sofar;
3245 #ifdef COFF_IMAGE_WITH_PE
3246 /* Set the padded size. */
3247 current->size = (current->size + page_size - 1) & -page_size;
3250 sofar += current->size;
3252 #ifdef ALIGN_SECTIONS_IN_FILE
3253 /* Make sure that this section is of the right size too. */
3254 if ((abfd->flags & EXEC_P) == 0)
3256 bfd_size_type old_size;
3258 old_size = current->size;
3259 current->size = BFD_ALIGN (current->size,
3260 1 << current->alignment_power);
3261 align_adjust = current->size != old_size;
3262 sofar += current->size - old_size;
3267 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3268 align_adjust = sofar != old_sofar;
3269 current->size += sofar - old_sofar;
3273 #ifdef COFF_IMAGE_WITH_PE
3274 /* For PE we need to make sure we pad out to the aligned
3275 size, in case the caller only writes out data to the
3277 if (pei_section_data (abfd, current)->virt_size < current->size)
3278 align_adjust = TRUE;
3282 /* Force .lib sections to start at zero. The vma is then
3283 incremented in coff_set_section_contents. This is right for
3285 if (strcmp (current->name, _LIB) == 0)
3286 (void) bfd_set_section_vma (abfd, current, 0);
3289 #ifdef ALIGN_SECTIONS_IN_FILE
3294 /* It is now safe to write to the output file. If we needed an
3295 alignment adjustment for the last section, then make sure that
3296 there is a byte at offset sofar. If there are no symbols and no
3297 relocs, then nothing follows the last section. If we don't force
3298 the last byte out, then the file may appear to be truncated. */
3304 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
3305 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
3309 /* Make sure the relocations are aligned. We don't need to make
3310 sure that this byte exists, because it will only matter if there
3311 really are relocs. */
3312 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
3314 obj_relocbase (abfd) = sofar;
3315 abfd->output_has_begun = TRUE;
3320 #ifdef COFF_IMAGE_WITH_PE
3322 static unsigned int pelength;
3323 static unsigned int peheader;
3326 coff_read_word (bfd *abfd, unsigned int *value)
3331 status = bfd_bread (b, (bfd_size_type) 2, abfd);
3339 *value = (unsigned int) b[0];
3341 *value = (unsigned int) (b[0] + (b[1] << 8));
3343 pelength += (unsigned int) status;
3349 coff_compute_checksum (bfd *abfd)
3351 bfd_boolean more_data;
3358 filepos = (file_ptr) 0;
3362 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
3365 more_data = coff_read_word (abfd, &value);
3367 total = 0xffff & (total + (total >> 0x10));
3372 return (0xffff & (total + (total >> 0x10)));
3376 coff_apply_checksum (bfd *abfd)
3378 unsigned int computed;
3379 unsigned int checksum = 0;
3381 if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0)
3384 if (!coff_read_word (abfd, &peheader))
3387 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3391 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3393 if (bfd_seek (abfd, peheader, SEEK_SET) != 0)
3396 computed = coff_compute_checksum (abfd);
3398 checksum = computed + pelength;
3400 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3403 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3408 #endif /* COFF_IMAGE_WITH_PE */
3411 coff_write_object_contents (bfd * abfd)
3414 bfd_boolean hasrelocs = FALSE;
3415 bfd_boolean haslinno = FALSE;
3416 #ifdef COFF_IMAGE_WITH_PE
3417 bfd_boolean hasdebug = FALSE;
3420 file_ptr reloc_base;
3421 file_ptr lineno_base;
3423 unsigned long reloc_size = 0, reloc_count = 0;
3424 unsigned long lnno_size = 0;
3425 bfd_boolean long_section_names;
3426 asection *text_sec = NULL;
3427 asection *data_sec = NULL;
3428 asection *bss_sec = NULL;
3429 struct internal_filehdr internal_f;
3430 struct internal_aouthdr internal_a;
3431 #ifdef COFF_LONG_SECTION_NAMES
3432 size_t string_size = STRING_SIZE_SIZE;
3435 bfd_set_error (bfd_error_system_call);
3437 /* Make a pass through the symbol table to count line number entries and
3438 put them into the correct asections. */
3439 lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd);
3441 if (! abfd->output_has_begun)
3443 if (! coff_compute_section_file_positions (abfd))
3447 reloc_base = obj_relocbase (abfd);
3449 /* Work out the size of the reloc and linno areas. */
3451 for (current = abfd->sections; current != NULL; current =
3455 /* We store the actual reloc count in the first reloc's addr. */
3456 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3459 reloc_count += current->reloc_count;
3462 reloc_size = reloc_count * bfd_coff_relsz (abfd);
3464 lineno_base = reloc_base + reloc_size;
3465 sym_base = lineno_base + lnno_size;
3467 /* Indicate in each section->line_filepos its actual file address. */
3468 for (current = abfd->sections; current != NULL; current =
3471 if (current->lineno_count)
3473 current->line_filepos = lineno_base;
3474 current->moving_line_filepos = lineno_base;
3475 lineno_base += current->lineno_count * bfd_coff_linesz (abfd);
3478 current->line_filepos = 0;
3480 if (current->reloc_count)
3482 current->rel_filepos = reloc_base;
3483 reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
3485 /* Extra reloc to hold real count. */
3486 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3487 reloc_base += bfd_coff_relsz (abfd);
3491 current->rel_filepos = 0;
3494 /* Write section headers to the file. */
3495 internal_f.f_nscns = 0;
3497 if ((abfd->flags & EXEC_P) != 0)
3498 scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
3501 scn_base = bfd_coff_filhsz (abfd);
3504 if (xcoff_data (abfd)->full_aouthdr)
3505 scn_base += bfd_coff_aoutsz (abfd);
3507 scn_base += SMALL_AOUTSZ;
3512 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
3515 long_section_names = FALSE;
3516 for (current = abfd->sections;
3518 current = current->next)
3520 struct internal_scnhdr section;
3521 #ifdef COFF_IMAGE_WITH_PE
3522 bfd_boolean is_reloc_section = FALSE;
3524 if (strcmp (current->name, DOT_RELOC) == 0)
3526 is_reloc_section = TRUE;
3528 pe_data (abfd)->has_reloc_section = 1;
3532 internal_f.f_nscns++;
3534 strncpy (section.s_name, current->name, SCNNMLEN);
3536 #ifdef COFF_LONG_SECTION_NAMES
3537 /* Handle long section names as in PE. This must be compatible
3538 with the code in coff_write_symbols and _bfd_coff_final_link. */
3539 if (bfd_coff_long_section_names (abfd))
3543 len = strlen (current->name);
3546 /* The s_name field is defined to be NUL-padded but need not be
3547 NUL-terminated. We use a temporary buffer so that we can still
3548 sprintf all eight chars without splatting a terminating NUL
3549 over the first byte of the following member (s_paddr). */
3550 /* PR 21096: The +20 is to stop a bogus warning from gcc7 about
3551 a possible buffer overflow. */
3552 char s_name_buf[SCNNMLEN + 1 + 20];
3554 /* An inherent limitation of the /nnnnnnn notation used to indicate
3555 the offset of the long name in the string table is that we
3556 cannot address entries beyone the ten million byte boundary. */
3557 if (string_size >= 10000000)
3559 bfd_set_error (bfd_error_file_too_big);
3561 /* xgettext:c-format */
3562 (_("%pB: section %pA: string table overflow at offset %ld"),
3563 abfd, current, (unsigned long) string_size);
3567 /* We do not need to use snprintf here as we have already verfied
3568 that string_size is not too big, plus we have an overlarge
3569 buffer, just in case. */
3570 sprintf (s_name_buf, "/%lu", (unsigned long) string_size);
3571 /* Then strncpy takes care of any padding for us. */
3572 strncpy (section.s_name, s_name_buf, SCNNMLEN);
3573 string_size += len + 1;
3574 long_section_names = TRUE;
3580 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3581 Ian Taylor <ian@cygnus.com>. */
3582 if (strcmp (current->name, _LIB) == 0)
3583 section.s_vaddr = 0;
3586 section.s_vaddr = current->vma;
3587 section.s_paddr = current->lma;
3588 section.s_size = current->size;
3589 #ifdef coff_get_section_load_page
3590 section.s_page = coff_get_section_load_page (current);
3596 section.s_paddr = 0;
3598 #ifdef COFF_IMAGE_WITH_PE
3599 /* Reminder: s_paddr holds the virtual size of the section. */
3600 if (coff_section_data (abfd, current) != NULL
3601 && pei_section_data (abfd, current) != NULL)
3602 section.s_paddr = pei_section_data (abfd, current)->virt_size;
3604 section.s_paddr = 0;
3607 /* If this section has no size or is unloadable then the scnptr
3609 if (current->size == 0
3610 || (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
3611 section.s_scnptr = 0;
3613 section.s_scnptr = current->filepos;
3615 section.s_relptr = current->rel_filepos;
3616 section.s_lnnoptr = current->line_filepos;
3617 section.s_nreloc = current->reloc_count;
3618 section.s_nlnno = current->lineno_count;
3619 #ifndef COFF_IMAGE_WITH_PE
3620 /* In PEI, relocs come in the .reloc section. */
3621 if (current->reloc_count != 0)
3624 if (current->lineno_count != 0)
3626 #ifdef COFF_IMAGE_WITH_PE
3627 if ((current->flags & SEC_DEBUGGING) != 0
3628 && ! is_reloc_section)
3634 /* Indicate the use of an XCOFF overflow section header. */
3635 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3637 section.s_nreloc = 0xffff;
3638 section.s_nlnno = 0xffff;
3643 section.s_flags = sec_to_styp_flags (current->name, current->flags);
3645 if (!strcmp (current->name, _TEXT))
3647 else if (!strcmp (current->name, _DATA))
3649 else if (!strcmp (current->name, _BSS))
3652 #ifdef COFF_ENCODE_ALIGNMENT
3653 COFF_ENCODE_ALIGNMENT(section, current->alignment_power);
3654 if ((unsigned int)COFF_DECODE_ALIGNMENT(section.s_flags)
3655 != current->alignment_power)
3657 bfd_boolean warn = coff_data (abfd)->link_info
3658 && !bfd_link_relocatable (coff_data (abfd)->link_info);
3661 /* xgettext:c-format */
3662 (_("%pB:%s section %s: alignment 2**%u not representable"),
3663 abfd, warn ? " warning:" : "", current->name,
3664 current->alignment_power);
3667 bfd_set_error (bfd_error_nonrepresentable_section);
3673 #ifdef COFF_IMAGE_WITH_PE
3674 /* Suppress output of the sections if they are null. ld
3675 includes the bss and data sections even if there is no size
3676 assigned to them. NT loader doesn't like it if these section
3677 headers are included if the sections themselves are not
3678 needed. See also coff_compute_section_file_positions. */
3679 if (section.s_size == 0)
3680 internal_f.f_nscns--;
3685 bfd_size_type amt = bfd_coff_scnhsz (abfd);
3687 if (coff_swap_scnhdr_out (abfd, §ion, &buff) == 0
3688 || bfd_bwrite (& buff, amt, abfd) != amt)
3693 /* PE stores COMDAT section information in the symbol table. If
3694 this section is supposed to have some COMDAT info, track down
3695 the symbol in the symbol table and modify it. */
3696 if ((current->flags & SEC_LINK_ONCE) != 0)
3698 unsigned int i, count;
3700 coff_symbol_type *csym = NULL;
3704 count = bfd_get_symcount (abfd);
3705 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
3707 if ((*psym)->section != current)
3710 /* Remember the location of the first symbol in this
3712 if (psymsec == NULL)
3715 /* See if this is the section symbol. */
3716 if (strcmp ((*psym)->name, current->name) == 0)
3718 csym = coff_symbol_from (*psym);
3720 || csym->native == NULL
3721 || ! csym->native->is_sym
3722 || csym->native->u.syment.n_numaux < 1
3723 || csym->native->u.syment.n_sclass != C_STAT
3724 || csym->native->u.syment.n_type != T_NULL)
3727 /* Here *PSYM is the section symbol for CURRENT. */
3734 Note that we might not if we're converting the file from
3735 some other object file format. */
3738 combined_entry_type *aux;
3740 /* We don't touch the x_checksum field. The
3741 x_associated field is not currently supported. */
3743 aux = csym->native + 1;
3744 BFD_ASSERT (! aux->is_sym);
3745 switch (current->flags & SEC_LINK_DUPLICATES)
3747 case SEC_LINK_DUPLICATES_DISCARD:
3748 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
3751 case SEC_LINK_DUPLICATES_ONE_ONLY:
3752 aux->u.auxent.x_scn.x_comdat =
3753 IMAGE_COMDAT_SELECT_NODUPLICATES;
3756 case SEC_LINK_DUPLICATES_SAME_SIZE:
3757 aux->u.auxent.x_scn.x_comdat =
3758 IMAGE_COMDAT_SELECT_SAME_SIZE;
3761 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
3762 aux->u.auxent.x_scn.x_comdat =
3763 IMAGE_COMDAT_SELECT_EXACT_MATCH;
3767 /* The COMDAT symbol must be the first symbol from this
3768 section in the symbol table. In order to make this
3769 work, we move the COMDAT symbol before the first
3770 symbol we found in the search above. It's OK to
3771 rearrange the symbol table at this point, because
3772 coff_renumber_symbols is going to rearrange it
3773 further and fix up all the aux entries. */
3774 if (psym != psymsec)
3780 for (pcopy = psym; pcopy > psymsec; pcopy--)
3781 pcopy[0] = pcopy[-1];
3786 #endif /* COFF_WITH_PE */
3791 /* XCOFF handles overflows in the reloc and line number count fields
3792 by creating a new section header to hold the correct values. */
3793 for (current = abfd->sections; current != NULL; current = current->next)
3795 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3797 struct internal_scnhdr scnhdr;
3801 internal_f.f_nscns++;
3802 memcpy (scnhdr.s_name, ".ovrflo", 8);
3803 scnhdr.s_paddr = current->reloc_count;
3804 scnhdr.s_vaddr = current->lineno_count;
3806 scnhdr.s_scnptr = 0;
3807 scnhdr.s_relptr = current->rel_filepos;
3808 scnhdr.s_lnnoptr = current->line_filepos;
3809 scnhdr.s_nreloc = current->target_index;
3810 scnhdr.s_nlnno = current->target_index;
3811 scnhdr.s_flags = STYP_OVRFLO;
3812 amt = bfd_coff_scnhsz (abfd);
3813 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
3814 || bfd_bwrite (& buff, amt, abfd) != amt)
3821 /* OK, now set up the filehdr... */
3823 /* Don't include the internal abs section in the section count */
3825 /* We will NOT put a fucking timestamp in the header here. Every time you
3826 put it back, I will come in and take it out again. I'm sorry. This
3827 field does not belong here. We fill it with a 0 so it compares the
3828 same but is not a reasonable time. -- gnu@cygnus.com */
3829 internal_f.f_timdat = 0;
3830 internal_f.f_flags = 0;
3832 if (abfd->flags & EXEC_P)
3833 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3836 internal_f.f_opthdr = 0;
3839 if (xcoff_data (abfd)->full_aouthdr)
3840 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3842 internal_f.f_opthdr = SMALL_AOUTSZ;
3848 internal_f.f_flags |= F_RELFLG;
3850 internal_f.f_flags |= F_LNNO;
3851 if (abfd->flags & EXEC_P)
3852 internal_f.f_flags |= F_EXEC;
3853 #ifdef COFF_IMAGE_WITH_PE
3855 internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED;
3856 if (pe_data (abfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE)
3857 internal_f.f_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
3860 #ifndef COFF_WITH_pex64
3862 internal_f.f_flags |= IMAGE_FILE_32BIT_MACHINE;
3864 if (bfd_little_endian (abfd))
3865 internal_f.f_flags |= F_AR32WR;
3867 internal_f.f_flags |= F_AR32W;
3872 /* Target id is used in TI COFF v1 and later; COFF0 won't use this field,
3873 but it doesn't hurt to set it internally. */
3874 internal_f.f_target_id = TI_TARGET_ID;
3876 #ifdef TIC80_TARGET_ID
3877 internal_f.f_target_id = TIC80_TARGET_ID;
3880 /* FIXME, should do something about the other byte orders and
3884 if ((abfd->flags & DYNAMIC) != 0)
3885 internal_f.f_flags |= F_SHROBJ;
3886 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
3887 internal_f.f_flags |= F_DYNLOAD;
3890 memset (&internal_a, 0, sizeof internal_a);
3892 /* Set up architecture-dependent stuff. */
3894 unsigned int magic = 0;
3895 unsigned short flags = 0;
3897 coff_set_flags (abfd, &magic, &flags);
3898 internal_f.f_magic = magic;
3899 internal_f.f_flags |= flags;
3900 /* ...and the "opt"hdr... */
3902 #ifdef TICOFF_AOUT_MAGIC
3903 internal_a.magic = TICOFF_AOUT_MAGIC;
3904 #define __A_MAGIC_SET__
3907 internal_a.magic = TIC80_ARCH_MAGIC;
3908 #define __A_MAGIC_SET__
3911 #define __A_MAGIC_SET__
3912 internal_a.magic = PAGEMAGICBCS;
3916 #define __A_MAGIC_SET__
3917 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
3920 #if defined(M68) || defined(WE32K) || defined(M68K)
3921 #define __A_MAGIC_SET__
3923 internal_a.magic = LYNXCOFFMAGIC;
3925 #if defined(TARG_AUX)
3926 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
3927 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
3928 PAGEMAGICEXECSWAPPED);
3930 #if defined (PAGEMAGICPEXECPAGED)
3931 internal_a.magic = PAGEMAGICPEXECPAGED;
3933 #endif /* TARG_AUX */
3935 #endif /* M68 || WE32K || M68K */
3938 #define __A_MAGIC_SET__
3939 internal_a.magic = ZMAGIC;
3943 #define __A_MAGIC_SET__
3944 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3947 #if defined MCORE_PE
3948 #define __A_MAGIC_SET__
3949 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3953 #define __A_MAGIC_SET__
3955 internal_a.magic = LYNXCOFFMAGIC;
3957 internal_a.magic = IMAGE_NT_OPTIONAL_HDR64_MAGIC;
3959 internal_a.magic = ZMAGIC;
3964 #define __A_MAGIC_SET__
3965 internal_a.magic = PE32PMAGIC;
3969 #define __A_MAGIC_SET__
3971 internal_a.magic = LYNXCOFFMAGIC;
3976 #define __A_MAGIC_SET__
3977 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
3978 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
3979 RS6K_AOUTHDR_OMAGIC;
3982 #if defined(SH) && defined(COFF_WITH_PE)
3983 #define __A_MAGIC_SET__
3984 internal_a.magic = SH_PE_MAGIC;
3987 #if defined(MIPS) && defined(COFF_WITH_PE)
3988 #define __A_MAGIC_SET__
3989 internal_a.magic = MIPS_PE_MAGIC;
3992 #ifndef __A_MAGIC_SET__
3993 #include "Your aouthdr magic number is not being set!"
3995 #undef __A_MAGIC_SET__
3999 /* FIXME: Does anybody ever set this to another value? */
4000 internal_a.vstamp = 0;
4002 /* Now should write relocs, strings, syms. */
4003 obj_sym_filepos (abfd) = sym_base;
4005 if (bfd_get_symcount (abfd) != 0)
4009 if (!coff_renumber_symbols (abfd, &firstundef))
4011 coff_mangle_symbols (abfd);
4012 if (! coff_write_symbols (abfd))
4014 if (! coff_write_linenumbers (abfd))
4016 if (! coff_write_relocs (abfd, firstundef))
4019 #ifdef COFF_LONG_SECTION_NAMES
4020 else if (long_section_names && ! obj_coff_strings_written (abfd))
4022 /* If we have long section names we have to write out the string
4023 table even if there are no symbols. */
4024 if (! coff_write_symbols (abfd))
4028 #ifdef COFF_IMAGE_WITH_PE
4030 else if ((abfd->flags & EXEC_P) != 0)
4034 /* PowerPC PE appears to require that all executable files be
4035 rounded up to the page size. */
4038 (file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
4040 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
4046 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
4047 backend linker, and obj_raw_syment_count is not valid until after
4048 coff_write_symbols is called. */
4049 if (obj_raw_syment_count (abfd) != 0)
4051 internal_f.f_symptr = sym_base;
4053 /* AIX appears to require that F_RELFLG not be set if there are
4054 local symbols but no relocations. */
4055 internal_f.f_flags &=~ F_RELFLG;
4060 if (long_section_names)
4061 internal_f.f_symptr = sym_base;
4063 internal_f.f_symptr = 0;
4064 internal_f.f_flags |= F_LSYMS;
4069 internal_a.tsize = text_sec->size;
4070 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
4074 internal_a.dsize = data_sec->size;
4075 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
4079 internal_a.bsize = bss_sec->size;
4080 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
4081 internal_a.data_start = bss_sec->vma;
4084 internal_a.entry = bfd_get_start_address (abfd);
4085 internal_f.f_nsyms = obj_raw_syment_count (abfd);
4088 if (xcoff_data (abfd)->full_aouthdr)
4091 asection *loader_sec;
4093 internal_a.vstamp = 1;
4095 internal_a.o_snentry = xcoff_data (abfd)->snentry;
4096 if (internal_a.o_snentry == 0)
4097 internal_a.entry = (bfd_vma) -1;
4099 if (text_sec != NULL)
4101 internal_a.o_sntext = text_sec->target_index;
4102 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
4106 internal_a.o_sntext = 0;
4107 internal_a.o_algntext = 0;
4109 if (data_sec != NULL)
4111 internal_a.o_sndata = data_sec->target_index;
4112 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
4116 internal_a.o_sndata = 0;
4117 internal_a.o_algndata = 0;
4119 loader_sec = bfd_get_section_by_name (abfd, ".loader");
4120 if (loader_sec != NULL)
4121 internal_a.o_snloader = loader_sec->target_index;
4123 internal_a.o_snloader = 0;
4124 if (bss_sec != NULL)
4125 internal_a.o_snbss = bss_sec->target_index;
4127 internal_a.o_snbss = 0;
4129 toc = xcoff_data (abfd)->toc;
4130 internal_a.o_toc = toc;
4131 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
4133 internal_a.o_modtype = xcoff_data (abfd)->modtype;
4134 if (xcoff_data (abfd)->cputype != -1)
4135 internal_a.o_cputype = xcoff_data (abfd)->cputype;
4138 switch (bfd_get_arch (abfd))
4140 case bfd_arch_rs6000:
4141 internal_a.o_cputype = 4;
4143 case bfd_arch_powerpc:
4144 if (bfd_get_mach (abfd) == bfd_mach_ppc)
4145 internal_a.o_cputype = 3;
4147 internal_a.o_cputype = 1;
4153 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
4154 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
4160 /* After object contents are finalized so we can compute a reasonable hash,
4161 but before header is written so we can update it to point to debug directory. */
4162 struct pe_tdata *pe = pe_data (abfd);
4164 if (pe->build_id.after_write_object_contents != NULL)
4165 (*pe->build_id.after_write_object_contents) (abfd);
4169 /* Now write header. */
4170 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
4175 bfd_size_type amount = bfd_coff_filhsz (abfd);
4177 buff = (char *) bfd_malloc (amount);
4181 bfd_coff_swap_filehdr_out (abfd, & internal_f, buff);
4182 amount = bfd_bwrite (buff, amount, abfd);
4186 if (amount != bfd_coff_filhsz (abfd))
4190 if (abfd->flags & EXEC_P)
4192 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
4193 include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)). */
4195 bfd_size_type amount = bfd_coff_aoutsz (abfd);
4197 buff = (char *) bfd_malloc (amount);
4201 coff_swap_aouthdr_out (abfd, & internal_a, buff);
4202 amount = bfd_bwrite (buff, amount, abfd);
4206 if (amount != bfd_coff_aoutsz (abfd))
4209 #ifdef COFF_IMAGE_WITH_PE
4210 if (! coff_apply_checksum (abfd))
4220 /* XCOFF seems to always write at least a small a.out header. */
4221 coff_swap_aouthdr_out (abfd, & internal_a, & buff);
4222 if (xcoff_data (abfd)->full_aouthdr)
4223 size = bfd_coff_aoutsz (abfd);
4225 size = SMALL_AOUTSZ;
4226 if (bfd_bwrite (& buff, (bfd_size_type) size, abfd) != size)
4235 coff_set_section_contents (bfd * abfd,
4237 const void * location,
4239 bfd_size_type count)
4241 if (! abfd->output_has_begun) /* Set by bfd.c handler. */
4243 if (! coff_compute_section_file_positions (abfd))
4247 #if defined(_LIB) && !defined(TARG_AUX)
4248 /* The physical address field of a .lib section is used to hold the
4249 number of shared libraries in the section. This code counts the
4250 number of sections being written, and increments the lma field
4253 I have found no documentation on the contents of this section.
4254 Experimentation indicates that the section contains zero or more
4255 records, each of which has the following structure:
4257 - a (four byte) word holding the length of this record, in words,
4258 - a word that always seems to be set to "2",
4259 - the path to a shared library, null-terminated and then padded
4260 to a whole word boundary.
4262 bfd_assert calls have been added to alert if an attempt is made
4263 to write a section which doesn't follow these assumptions. The
4264 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4265 <robertl@arnet.com> (Thanks!).
4267 Gvran Uddeborg <gvran@uddeborg.pp.se>. */
4268 if (strcmp (section->name, _LIB) == 0)
4270 bfd_byte *rec, *recend;
4272 rec = (bfd_byte *) location;
4273 recend = rec + count;
4274 while (rec < recend)
4277 rec += bfd_get_32 (abfd, rec) * 4;
4280 BFD_ASSERT (rec == recend);
4284 /* Don't write out bss sections - one way to do this is to
4285 see if the filepos has not been set. */
4286 if (section->filepos == 0)
4289 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
4295 return bfd_bwrite (location, count, abfd) == count;
4299 buy_and_read (bfd *abfd, file_ptr where, bfd_size_type size)
4301 void * area = bfd_alloc (abfd, size);
4305 if (bfd_seek (abfd, where, SEEK_SET) != 0
4306 || bfd_bread (area, size, abfd) != size)
4315 Creating the linenumber table is done by reading in the entire
4316 coff linenumber table, and creating another table for internal use.
4318 A coff linenumber table is structured so that each function
4319 is marked as having a line number of 0. Each line within the
4320 function is an offset from the first line in the function. The
4321 base of the line number information for the table is stored in
4322 the symbol associated with the function.
4324 Note: The PE format uses line number 0 for a flag indicating a
4327 The information is copied from the external to the internal
4328 table, and each symbol which marks a function is marked by
4331 How does this work ?
4335 coff_sort_func_alent (const void * arg1, const void * arg2)
4337 const alent *al1 = *(const alent **) arg1;
4338 const alent *al2 = *(const alent **) arg2;
4339 const coff_symbol_type *s1 = (const coff_symbol_type *) (al1->u.sym);
4340 const coff_symbol_type *s2 = (const coff_symbol_type *) (al2->u.sym);
4342 if (s1 == NULL || s2 == NULL)
4344 if (s1->symbol.value < s2->symbol.value)
4346 else if (s1->symbol.value > s2->symbol.value)
4353 coff_slurp_line_table (bfd *abfd, asection *asect)
4355 LINENO *native_lineno;
4356 alent *lineno_cache;
4358 unsigned int counter;
4360 bfd_vma prev_offset = 0;
4361 bfd_boolean ordered = TRUE;
4362 unsigned int nbr_func;
4364 bfd_boolean have_func;
4365 bfd_boolean ret = TRUE;
4367 BFD_ASSERT (asect->lineno == NULL);
4369 if (asect->lineno_count > asect->size)
4372 (_("%pB: warning: line number count (%#lx) exceeds section size (%#lx)"),
4373 abfd, (unsigned long) asect->lineno_count, (unsigned long) asect->size);
4377 amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent);
4378 lineno_cache = (alent *) bfd_alloc (abfd, amt);
4379 if (lineno_cache == NULL)
4382 amt = (bfd_size_type) bfd_coff_linesz (abfd) * asect->lineno_count;
4383 native_lineno = (LINENO *) buy_and_read (abfd, asect->line_filepos, amt);
4384 if (native_lineno == NULL)
4387 (_("%pB: warning: line number table read failed"), abfd);
4388 bfd_release (abfd, lineno_cache);
4392 cache_ptr = lineno_cache;
4393 asect->lineno = lineno_cache;
4394 src = native_lineno;
4398 for (counter = 0; counter < asect->lineno_count; counter++, src++)
4400 struct internal_lineno dst;
4402 bfd_coff_swap_lineno_in (abfd, src, &dst);
4403 cache_ptr->line_number = dst.l_lnno;
4404 /* Appease memory checkers that get all excited about
4405 uninitialised memory when copying alents if u.offset is
4406 larger than u.sym. (64-bit BFD on 32-bit host.) */
4407 memset (&cache_ptr->u, 0, sizeof (cache_ptr->u));
4409 if (cache_ptr->line_number == 0)
4411 combined_entry_type * ent;
4412 unsigned long symndx;
4413 coff_symbol_type *sym;
4416 symndx = dst.l_addr.l_symndx;
4417 if (symndx >= obj_raw_syment_count (abfd))
4420 /* xgettext:c-format */
4421 (_("%pB: warning: illegal symbol index 0x%lx in line number entry %d"),
4422 abfd, symndx, counter);
4423 cache_ptr->line_number = -1;
4428 ent = obj_raw_syments (abfd) + symndx;
4429 /* FIXME: We should not be casting between ints and
4430 pointers like this. */
4434 /* xgettext:c-format */
4435 (_("%pB: warning: illegal symbol index 0x%lx in line number entry %d"),
4436 abfd, symndx, counter);
4437 cache_ptr->line_number = -1;
4441 sym = (coff_symbol_type *) (ent->u.syment._n._n_n._n_zeroes);
4443 /* PR 17512 file: 078-10659-0.004 */
4444 if (sym < obj_symbols (abfd)
4445 || sym >= obj_symbols (abfd) + bfd_get_symcount (abfd))
4448 /* xgettext:c-format */
4449 (_("%pB: warning: illegal symbol in line number entry %d"),
4451 cache_ptr->line_number = -1;
4458 cache_ptr->u.sym = (asymbol *) sym;
4459 if (sym->lineno != NULL)
4461 /* xgettext:c-format */
4462 (_("%pB: warning: duplicate line number information for `%s'"),
4463 abfd, bfd_asymbol_name (&sym->symbol));
4465 sym->lineno = cache_ptr;
4466 if (sym->symbol.value < prev_offset)
4468 prev_offset = sym->symbol.value;
4470 else if (!have_func)
4471 /* Drop line information that has no associated function.
4472 PR 17521: file: 078-10659-0.004. */
4475 cache_ptr->u.offset = (dst.l_addr.l_paddr
4476 - bfd_section_vma (abfd, asect));
4480 asect->lineno_count = cache_ptr - lineno_cache;
4481 memset (cache_ptr, 0, sizeof (*cache_ptr));
4482 bfd_release (abfd, native_lineno);
4484 /* On some systems (eg AIX5.3) the lineno table may not be sorted. */
4487 /* Sort the table. */
4489 alent *n_lineno_cache;
4491 /* Create a table of functions. */
4492 func_table = (alent **) bfd_alloc (abfd, nbr_func * sizeof (alent *));
4493 if (func_table != NULL)
4495 alent **p = func_table;
4498 for (i = 0; i < asect->lineno_count; i++)
4499 if (lineno_cache[i].line_number == 0)
4500 *p++ = &lineno_cache[i];
4502 BFD_ASSERT ((unsigned int) (p - func_table) == nbr_func);
4504 /* Sort by functions. */
4505 qsort (func_table, nbr_func, sizeof (alent *), coff_sort_func_alent);
4507 /* Create the new sorted table. */
4508 amt = (bfd_size_type) asect->lineno_count * sizeof (alent);
4509 n_lineno_cache = (alent *) bfd_alloc (abfd, amt);
4510 if (n_lineno_cache != NULL)
4512 alent *n_cache_ptr = n_lineno_cache;
4514 for (i = 0; i < nbr_func; i++)
4516 coff_symbol_type *sym;
4517 alent *old_ptr = func_table[i];
4519 /* Update the function entry. */
4520 sym = (coff_symbol_type *) old_ptr->u.sym;
4521 /* PR binutils/17512: Point the lineno to where
4522 this entry will be after the memcpy below. */
4523 sym->lineno = lineno_cache + (n_cache_ptr - n_lineno_cache);
4524 /* Copy the function and line number entries. */
4526 *n_cache_ptr++ = *old_ptr++;
4527 while (old_ptr->line_number != 0);
4529 BFD_ASSERT ((bfd_size_type) (n_cache_ptr - n_lineno_cache) == (amt / sizeof (alent)));
4531 memcpy (lineno_cache, n_lineno_cache, amt);
4535 bfd_release (abfd, func_table);
4544 /* Slurp in the symbol table, converting it to generic form. Note
4545 that if coff_relocate_section is defined, the linker will read
4546 symbols via coff_link_add_symbols, rather than via this routine. */
4549 coff_slurp_symbol_table (bfd * abfd)
4551 combined_entry_type *native_symbols;
4552 coff_symbol_type *cached_area;
4553 unsigned int *table_ptr;
4555 unsigned int number_of_symbols = 0;
4556 bfd_boolean ret = TRUE;
4558 if (obj_symbols (abfd))
4561 /* Read in the symbol table. */
4562 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
4565 /* Allocate enough room for all the symbols in cached form. */
4566 amt = obj_raw_syment_count (abfd);
4567 amt *= sizeof (coff_symbol_type);
4568 cached_area = (coff_symbol_type *) bfd_alloc (abfd, amt);
4569 if (cached_area == NULL)
4572 amt = obj_raw_syment_count (abfd);
4573 amt *= sizeof (unsigned int);
4574 table_ptr = (unsigned int *) bfd_zalloc (abfd, amt);
4576 if (table_ptr == NULL)
4580 coff_symbol_type *dst = cached_area;
4581 unsigned int last_native_index = obj_raw_syment_count (abfd);
4582 unsigned int this_index = 0;
4584 while (this_index < last_native_index)
4586 combined_entry_type *src = native_symbols + this_index;
4587 table_ptr[this_index] = number_of_symbols;
4589 dst->symbol.the_bfd = abfd;
4590 BFD_ASSERT (src->is_sym);
4591 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
4592 /* We use the native name field to point to the cached field. */
4593 src->u.syment._n._n_n._n_zeroes = (bfd_hostptr_t) dst;
4594 dst->symbol.section = coff_section_from_bfd_index (abfd,
4595 src->u.syment.n_scnum);
4596 dst->symbol.flags = 0;
4597 /* PR 17512: file: 079-7098-0.001:0.1. */
4598 dst->symbol.value = 0;
4599 dst->done_lineno = FALSE;
4601 switch (src->u.syment.n_sclass)
4607 case C_THUMBEXTFUNC:
4611 #if ! defined _AIX52 && ! defined AIX_WEAK_SUPPORT
4616 case C_SYSTEM: /* System Wide variable. */
4619 /* In PE, 0x68 (104) denotes a section symbol. */
4621 /* In PE, 0x69 (105) denotes a weak external symbol. */
4624 switch (coff_classify_symbol (abfd, &src->u.syment))
4626 case COFF_SYMBOL_GLOBAL:
4627 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4628 #if defined COFF_WITH_PE
4629 /* PE sets the symbol to a value relative to the
4630 start of the section. */
4631 dst->symbol.value = src->u.syment.n_value;
4633 dst->symbol.value = (src->u.syment.n_value
4634 - dst->symbol.section->vma);
4636 if (ISFCN ((src->u.syment.n_type)))
4637 /* A function ext does not go at the end of a
4639 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4642 case COFF_SYMBOL_COMMON:
4643 dst->symbol.section = bfd_com_section_ptr;
4644 dst->symbol.value = src->u.syment.n_value;
4647 case COFF_SYMBOL_UNDEFINED:
4648 dst->symbol.section = bfd_und_section_ptr;
4649 dst->symbol.value = 0;
4652 case COFF_SYMBOL_PE_SECTION:
4653 dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM;
4654 dst->symbol.value = 0;
4657 case COFF_SYMBOL_LOCAL:
4658 dst->symbol.flags = BSF_LOCAL;
4659 #if defined COFF_WITH_PE
4660 /* PE sets the symbol to a value relative to the
4661 start of the section. */
4662 dst->symbol.value = src->u.syment.n_value;
4664 dst->symbol.value = (src->u.syment.n_value
4665 - dst->symbol.section->vma);
4667 if (ISFCN ((src->u.syment.n_type)))
4668 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4673 /* A symbol with a csect entry should not go at the end. */
4674 if (src->u.syment.n_numaux > 0)
4675 dst->symbol.flags |= BSF_NOT_AT_END;
4679 if (src->u.syment.n_sclass == C_NT_WEAK)
4680 dst->symbol.flags |= BSF_WEAK;
4682 if (src->u.syment.n_sclass == C_SECTION
4683 && src->u.syment.n_scnum > 0)
4684 dst->symbol.flags = BSF_LOCAL;
4686 if (src->u.syment.n_sclass == C_WEAKEXT
4688 || src->u.syment.n_sclass == C_AIX_WEAKEXT
4691 dst->symbol.flags |= BSF_WEAK;
4695 case C_STAT: /* Static. */
4697 case C_THUMBSTAT: /* Thumb static. */
4698 case C_THUMBLABEL: /* Thumb label. */
4699 case C_THUMBSTATFUNC:/* Thumb static function. */
4702 case C_DWARF: /* A label in a dwarf section. */
4703 case C_INFO: /* A label in a comment section. */
4705 case C_LABEL: /* Label. */
4706 if (src->u.syment.n_scnum == N_DEBUG)
4707 dst->symbol.flags = BSF_DEBUGGING;
4709 dst->symbol.flags = BSF_LOCAL;
4711 /* Base the value as an index from the base of the
4712 section, if there is one. */
4713 if (dst->symbol.section)
4715 #if defined COFF_WITH_PE
4716 /* PE sets the symbol to a value relative to the
4717 start of the section. */
4718 dst->symbol.value = src->u.syment.n_value;
4720 dst->symbol.value = (src->u.syment.n_value
4721 - dst->symbol.section->vma);
4725 dst->symbol.value = src->u.syment.n_value;
4728 case C_MOS: /* Member of structure. */
4729 case C_EOS: /* End of structure. */
4730 case C_REGPARM: /* Register parameter. */
4731 case C_REG: /* register variable. */
4732 /* C_AUTOARG conflicts with TI COFF C_UEXT. */
4733 case C_TPDEF: /* Type definition. */
4735 case C_AUTO: /* Automatic variable. */
4736 case C_FIELD: /* Bit field. */
4737 case C_ENTAG: /* Enumeration tag. */
4738 case C_MOE: /* Member of enumeration. */
4739 case C_MOU: /* Member of union. */
4740 case C_UNTAG: /* Union tag. */
4741 dst->symbol.flags = BSF_DEBUGGING;
4742 dst->symbol.value = (src->u.syment.n_value);
4745 case C_FILE: /* File name. */
4746 case C_STRTAG: /* Structure tag. */
4763 dst->symbol.flags = BSF_DEBUGGING;
4764 dst->symbol.value = (src->u.syment.n_value);
4768 case C_BINCL: /* Beginning of include file. */
4769 case C_EINCL: /* Ending of include file. */
4770 /* The value is actually a pointer into the line numbers
4771 of the file. We locate the line number entry, and
4772 set the section to the section which contains it, and
4773 the value to the index in that section. */
4777 dst->symbol.flags = BSF_DEBUGGING;
4778 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4779 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
4780 && ((file_ptr) (sec->line_filepos
4781 + sec->lineno_count * bfd_coff_linesz (abfd))
4782 > (file_ptr) src->u.syment.n_value))
4785 dst->symbol.value = 0;
4788 dst->symbol.section = sec;
4789 dst->symbol.value = ((src->u.syment.n_value
4790 - sec->line_filepos)
4791 / bfd_coff_linesz (abfd));
4798 dst->symbol.flags = BSF_DEBUGGING;
4800 /* The value is actually a symbol index. Save a pointer
4801 to the symbol instead of the index. FIXME: This
4802 should use a union. */
4803 src->u.syment.n_value =
4804 (long) (intptr_t) (native_symbols + src->u.syment.n_value);
4805 dst->symbol.value = src->u.syment.n_value;
4810 case C_BLOCK: /* ".bb" or ".eb". */
4811 case C_FCN: /* ".bf" or ".ef" (or PE ".lf"). */
4812 case C_EFCN: /* Physical end of function. */
4813 #if defined COFF_WITH_PE
4814 /* PE sets the symbol to a value relative to the start
4816 dst->symbol.value = src->u.syment.n_value;
4817 if (strcmp (dst->symbol.name, ".bf") != 0)
4819 /* PE uses funny values for .ef and .lf; don't
4821 dst->symbol.flags = BSF_DEBUGGING;
4824 dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC;
4826 /* Base the value as an index from the base of the
4828 dst->symbol.flags = BSF_LOCAL;
4829 dst->symbol.value = (src->u.syment.n_value
4830 - dst->symbol.section->vma);
4834 case C_STATLAB: /* Static load time label. */
4835 dst->symbol.value = src->u.syment.n_value;
4836 dst->symbol.flags = BSF_GLOBAL;
4840 /* PE DLLs sometimes have zeroed out symbols for some
4841 reason. Just ignore them without a warning. */
4842 if (src->u.syment.n_type == 0
4843 && src->u.syment.n_value == 0
4844 && src->u.syment.n_scnum == 0)
4847 /* XCOFF specific: deleted entry. */
4848 if (src->u.syment.n_value == C_NULL_VALUE)
4852 case C_EXTDEF: /* External definition. */
4853 case C_ULABEL: /* Undefined label. */
4854 case C_USTATIC: /* Undefined static. */
4855 #ifndef COFF_WITH_PE
4856 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4857 class to represent a section symbol. */
4858 case C_LINE: /* line # reformatted as symbol table entry. */
4859 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4860 case C_ALIAS: /* Duplicate tag. */
4862 /* New storage classes for TI COFF. */
4863 #if defined(TIC80COFF) || defined(TICOFF)
4864 case C_UEXT: /* Tentative external definition. */
4866 case C_EXTLAB: /* External load time label. */
4869 /* xgettext:c-format */
4870 (_("%pB: unrecognized storage class %d for %s symbol `%s'"),
4871 abfd, src->u.syment.n_sclass,
4872 dst->symbol.section->name, dst->symbol.name);
4875 case C_HIDDEN: /* Ext symbol in dmert public lib. */
4876 /* PR 20722: These symbols can also be generated by
4877 building DLLs with --gc-sections enabled. */
4878 dst->symbol.flags = BSF_DEBUGGING;
4879 dst->symbol.value = (src->u.syment.n_value);
4884 dst->symbol.udata.i = 0;
4887 this_index += (src->u.syment.n_numaux) + 1;
4889 number_of_symbols++;
4893 obj_symbols (abfd) = cached_area;
4894 obj_raw_syments (abfd) = native_symbols;
4896 bfd_get_symcount (abfd) = number_of_symbols;
4897 obj_convert (abfd) = table_ptr;
4898 /* Slurp the line tables for each section too. */
4905 if (! coff_slurp_line_table (abfd, p))
4914 /* Classify a COFF symbol. A couple of targets have globally visible
4915 symbols which are not class C_EXT, and this handles those. It also
4916 recognizes some special PE cases. */
4918 static enum coff_symbol_classification
4919 coff_classify_symbol (bfd *abfd,
4920 struct internal_syment *syment)
4922 /* FIXME: This partially duplicates the switch in
4923 coff_slurp_symbol_table. */
4924 switch (syment->n_sclass)
4930 case C_THUMBEXTFUNC:
4938 if (syment->n_scnum == 0)
4940 if (syment->n_value == 0)
4941 return COFF_SYMBOL_UNDEFINED;
4943 return COFF_SYMBOL_COMMON;
4945 return COFF_SYMBOL_GLOBAL;
4952 if (syment->n_sclass == C_STAT)
4954 if (syment->n_scnum == 0)
4955 /* The Microsoft compiler sometimes generates these if a
4956 small static function is inlined every time it is used.
4957 The function is discarded, but the symbol table entry
4959 return COFF_SYMBOL_LOCAL;
4961 #ifdef STRICT_PE_FORMAT
4962 /* This is correct for Microsoft generated objects, but it
4963 breaks gas generated objects. */
4964 if (syment->n_value == 0)
4968 char buf[SYMNMLEN + 1];
4970 name = _bfd_coff_internal_syment_name (abfd, syment, buf)
4971 sec = coff_section_from_bfd_index (abfd, syment->n_scnum);
4972 if (sec != NULL && name != NULL
4973 && (strcmp (bfd_get_section_name (abfd, sec), name) == 0))
4974 return COFF_SYMBOL_PE_SECTION;
4978 return COFF_SYMBOL_LOCAL;
4981 if (syment->n_sclass == C_SECTION)
4983 /* In some cases in a DLL generated by the Microsoft linker, the
4984 n_value field will contain garbage. FIXME: This should
4985 probably be handled by the swapping function instead. */
4986 syment->n_value = 0;
4987 if (syment->n_scnum == 0)
4988 return COFF_SYMBOL_UNDEFINED;
4989 return COFF_SYMBOL_PE_SECTION;
4991 #endif /* COFF_WITH_PE */
4993 /* If it is not a global symbol, we presume it is a local symbol. */
4994 if (syment->n_scnum == 0)
4996 char buf[SYMNMLEN + 1];
4999 /* xgettext:c-format */
5000 (_("warning: %pB: local symbol `%s' has no section"),
5001 abfd, _bfd_coff_internal_syment_name (abfd, syment, buf));
5004 return COFF_SYMBOL_LOCAL;
5011 Coff relocations are easily transformed into the internal BFD form
5014 Reading a coff relocation table is done in the following stages:
5016 o Read the entire coff relocation table into memory.
5018 o Process each relocation in turn; first swap it from the
5019 external to the internal form.
5021 o Turn the symbol referenced in the relocation's symbol index
5022 into a pointer into the canonical symbol table.
5023 This table is the same as the one returned by a call to
5024 @code{bfd_canonicalize_symtab}. The back end will call that
5025 routine and save the result if a canonicalization hasn't been done.
5027 o The reloc index is turned into a pointer to a howto
5028 structure, in a back end specific way. For instance, the 386
5029 uses the @code{r_type} to directly produce an index
5030 into a howto table vector; the 88k subtracts a number from the
5031 @code{r_type} field and creates an addend field.
5035 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
5037 coff_symbol_type *coffsym = NULL; \
5039 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
5040 coffsym = (obj_symbols (abfd) \
5041 + (cache_ptr->sym_ptr_ptr - symbols)); \
5043 coffsym = coff_symbol_from (ptr); \
5044 if (coffsym != NULL \
5045 && coffsym->native->is_sym \
5046 && coffsym->native->u.syment.n_scnum == 0) \
5047 cache_ptr->addend = 0; \
5048 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
5049 && ptr->section != NULL) \
5050 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
5052 cache_ptr->addend = 0; \
5057 coff_slurp_reloc_table (bfd * abfd, sec_ptr asect, asymbol ** symbols)
5059 RELOC *native_relocs;
5060 arelent *reloc_cache;
5065 if (asect->relocation)
5067 if (asect->reloc_count == 0)
5069 if (asect->flags & SEC_CONSTRUCTOR)
5071 if (!coff_slurp_symbol_table (abfd))
5074 amt = (bfd_size_type) bfd_coff_relsz (abfd) * asect->reloc_count;
5075 native_relocs = (RELOC *) buy_and_read (abfd, asect->rel_filepos, amt);
5076 amt = (bfd_size_type) asect->reloc_count * sizeof (arelent);
5077 reloc_cache = (arelent *) bfd_alloc (abfd, amt);
5079 if (reloc_cache == NULL || native_relocs == NULL)
5082 for (idx = 0; idx < asect->reloc_count; idx++)
5084 struct internal_reloc dst;
5085 struct external_reloc *src;
5086 #ifndef RELOC_PROCESSING
5090 cache_ptr = reloc_cache + idx;
5091 src = native_relocs + idx;
5094 coff_swap_reloc_in (abfd, src, &dst);
5096 #ifdef RELOC_PROCESSING
5097 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
5099 cache_ptr->address = dst.r_vaddr;
5101 if (dst.r_symndx != -1 && symbols != NULL)
5103 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
5106 /* xgettext:c-format */
5107 (_("%pB: warning: illegal symbol index %ld in relocs"),
5108 abfd, dst.r_symndx);
5109 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5114 cache_ptr->sym_ptr_ptr = (symbols
5115 + obj_convert (abfd)[dst.r_symndx]);
5116 ptr = *(cache_ptr->sym_ptr_ptr);
5121 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5125 /* The symbols definitions that we have read in have been
5126 relocated as if their sections started at 0. But the offsets
5127 refering to the symbols in the raw data have not been
5128 modified, so we have to have a negative addend to compensate.
5130 Note that symbols which used to be common must be left alone. */
5132 /* Calculate any reloc addend by looking at the symbol. */
5133 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
5136 cache_ptr->address -= asect->vma;
5137 /* !! cache_ptr->section = NULL;*/
5139 /* Fill in the cache_ptr->howto field from dst.r_type. */
5140 RTYPE2HOWTO (cache_ptr, &dst);
5141 #endif /* RELOC_PROCESSING */
5143 if (cache_ptr->howto == NULL)
5146 /* xgettext:c-format */
5147 (_("%pB: illegal relocation type %d at address %#" PRIx64),
5148 abfd, dst.r_type, (uint64_t) dst.r_vaddr);
5149 bfd_set_error (bfd_error_bad_value);
5154 asect->relocation = reloc_cache;
5158 #ifndef coff_rtype_to_howto
5161 /* Get the howto structure for a reloc. This is only used if the file
5162 including this one defines coff_relocate_section to be
5163 _bfd_coff_generic_relocate_section, so it is OK if it does not
5164 always work. It is the responsibility of the including file to
5165 make sure it is reasonable if it is needed. */
5167 static reloc_howto_type *
5168 coff_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
5169 asection *sec ATTRIBUTE_UNUSED,
5170 struct internal_reloc *rel ATTRIBUTE_UNUSED,
5171 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED,
5172 struct internal_syment *sym ATTRIBUTE_UNUSED,
5173 bfd_vma *addendp ATTRIBUTE_UNUSED)
5177 genrel.howto = NULL;
5178 RTYPE2HOWTO (&genrel, rel);
5179 return genrel.howto;
5182 #else /* ! defined (RTYPE2HOWTO) */
5184 #define coff_rtype_to_howto NULL
5186 #endif /* ! defined (RTYPE2HOWTO) */
5187 #endif /* ! defined (coff_rtype_to_howto) */
5189 /* This is stupid. This function should be a boolean predicate. */
5192 coff_canonicalize_reloc (bfd * abfd,
5197 arelent *tblptr = section->relocation;
5198 unsigned int count = 0;
5200 if (section->flags & SEC_CONSTRUCTOR)
5202 /* This section has relocs made up by us, they are not in the
5203 file, so take them out of their chain and place them into
5204 the data area provided. */
5205 arelent_chain *chain = section->constructor_chain;
5207 for (count = 0; count < section->reloc_count; count++)
5209 *relptr++ = &chain->relent;
5210 chain = chain->next;
5215 if (! coff_slurp_reloc_table (abfd, section, symbols))
5218 tblptr = section->relocation;
5220 for (; count++ < section->reloc_count;)
5221 *relptr++ = tblptr++;
5224 return section->reloc_count;
5227 #ifndef coff_set_reloc
5228 #define coff_set_reloc _bfd_generic_set_reloc
5231 #ifndef coff_reloc16_estimate
5232 #define coff_reloc16_estimate dummy_reloc16_estimate
5235 dummy_reloc16_estimate (bfd *abfd ATTRIBUTE_UNUSED,
5236 asection *input_section ATTRIBUTE_UNUSED,
5237 arelent *reloc ATTRIBUTE_UNUSED,
5238 unsigned int shrink ATTRIBUTE_UNUSED,
5239 struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
5247 #ifndef coff_reloc16_extra_cases
5249 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
5251 /* This works even if abort is not declared in any header file. */
5254 dummy_reloc16_extra_cases (bfd *abfd ATTRIBUTE_UNUSED,
5255 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
5256 struct bfd_link_order *link_order ATTRIBUTE_UNUSED,
5257 arelent *reloc ATTRIBUTE_UNUSED,
5258 bfd_byte *data ATTRIBUTE_UNUSED,
5259 unsigned int *src_ptr ATTRIBUTE_UNUSED,
5260 unsigned int *dst_ptr ATTRIBUTE_UNUSED)
5266 /* If coff_relocate_section is defined, we can use the optimized COFF
5267 backend linker. Otherwise we must continue to use the old linker. */
5269 #ifdef coff_relocate_section
5271 #ifndef coff_bfd_link_hash_table_create
5272 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
5274 #ifndef coff_bfd_link_add_symbols
5275 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
5277 #ifndef coff_bfd_final_link
5278 #define coff_bfd_final_link _bfd_coff_final_link
5281 #else /* ! defined (coff_relocate_section) */
5283 #define coff_relocate_section NULL
5284 #ifndef coff_bfd_link_hash_table_create
5285 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
5287 #ifndef coff_bfd_link_add_symbols
5288 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
5290 #define coff_bfd_final_link _bfd_generic_final_link
5292 #endif /* ! defined (coff_relocate_section) */
5294 #define coff_bfd_link_just_syms _bfd_generic_link_just_syms
5295 #define coff_bfd_copy_link_hash_symbol_type \
5296 _bfd_generic_copy_link_hash_symbol_type
5297 #define coff_bfd_link_split_section _bfd_generic_link_split_section
5299 #define coff_bfd_link_check_relocs _bfd_generic_link_check_relocs
5301 #ifndef coff_start_final_link
5302 #define coff_start_final_link NULL
5305 #ifndef coff_adjust_symndx
5306 #define coff_adjust_symndx NULL
5309 #ifndef coff_link_add_one_symbol
5310 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5313 #ifndef coff_link_output_has_begun
5316 coff_link_output_has_begun (bfd * abfd,
5317 struct coff_final_link_info * info ATTRIBUTE_UNUSED)
5319 return abfd->output_has_begun;
5323 #ifndef coff_final_link_postscript
5326 coff_final_link_postscript (bfd * abfd ATTRIBUTE_UNUSED,
5327 struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED)
5333 #ifndef coff_SWAP_aux_in
5334 #define coff_SWAP_aux_in coff_swap_aux_in
5336 #ifndef coff_SWAP_sym_in
5337 #define coff_SWAP_sym_in coff_swap_sym_in
5339 #ifndef coff_SWAP_lineno_in
5340 #define coff_SWAP_lineno_in coff_swap_lineno_in
5342 #ifndef coff_SWAP_aux_out
5343 #define coff_SWAP_aux_out coff_swap_aux_out
5345 #ifndef coff_SWAP_sym_out
5346 #define coff_SWAP_sym_out coff_swap_sym_out
5348 #ifndef coff_SWAP_lineno_out
5349 #define coff_SWAP_lineno_out coff_swap_lineno_out
5351 #ifndef coff_SWAP_reloc_out
5352 #define coff_SWAP_reloc_out coff_swap_reloc_out
5354 #ifndef coff_SWAP_filehdr_out
5355 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5357 #ifndef coff_SWAP_aouthdr_out
5358 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5360 #ifndef coff_SWAP_scnhdr_out
5361 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5363 #ifndef coff_SWAP_reloc_in
5364 #define coff_SWAP_reloc_in coff_swap_reloc_in
5366 #ifndef coff_SWAP_filehdr_in
5367 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5369 #ifndef coff_SWAP_aouthdr_in
5370 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5372 #ifndef coff_SWAP_scnhdr_in
5373 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5376 static bfd_coff_backend_data bfd_coff_std_swap_table ATTRIBUTE_UNUSED =
5378 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5379 coff_SWAP_aux_out, coff_SWAP_sym_out,
5380 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5381 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5382 coff_SWAP_scnhdr_out,
5383 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5384 #ifdef COFF_LONG_FILENAMES
5389 COFF_DEFAULT_LONG_SECTION_NAMES,
5390 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5391 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5396 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5402 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5403 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5404 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5405 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5406 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5407 coff_classify_symbol, coff_compute_section_file_positions,
5408 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5409 coff_adjust_symndx, coff_link_add_one_symbol,
5410 coff_link_output_has_begun, coff_final_link_postscript,
5415 /* COFF0 differs in file/section header size and relocation entry size. */
5417 static bfd_coff_backend_data ticoff0_swap_table =
5419 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5420 coff_SWAP_aux_out, coff_SWAP_sym_out,
5421 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5422 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5423 coff_SWAP_scnhdr_out,
5424 FILHSZ_V0, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ_V0, LINESZ, FILNMLEN,
5425 #ifdef COFF_LONG_FILENAMES
5430 COFF_DEFAULT_LONG_SECTION_NAMES,
5431 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5432 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5437 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5443 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5444 coff_SWAP_reloc_in, ticoff0_bad_format_hook, coff_set_arch_mach_hook,
5445 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5446 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5447 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5448 coff_classify_symbol, coff_compute_section_file_positions,
5449 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5450 coff_adjust_symndx, coff_link_add_one_symbol,
5451 coff_link_output_has_begun, coff_final_link_postscript,
5457 /* COFF1 differs in section header size. */
5459 static bfd_coff_backend_data ticoff1_swap_table =
5461 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5462 coff_SWAP_aux_out, coff_SWAP_sym_out,
5463 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5464 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5465 coff_SWAP_scnhdr_out,
5466 FILHSZ, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5467 #ifdef COFF_LONG_FILENAMES
5472 COFF_DEFAULT_LONG_SECTION_NAMES,
5473 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5474 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5479 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5485 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5486 coff_SWAP_reloc_in, ticoff1_bad_format_hook, coff_set_arch_mach_hook,
5487 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5488 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5489 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5490 coff_classify_symbol, coff_compute_section_file_positions,
5491 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5492 coff_adjust_symndx, coff_link_add_one_symbol,
5493 coff_link_output_has_begun, coff_final_link_postscript,
5494 bfd_pe_print_pdata /* huh */
5498 #ifdef COFF_WITH_PE_BIGOBJ
5499 /* The UID for bigobj files. */
5501 static const char header_bigobj_classid[16] =
5503 0xC7, 0xA1, 0xBA, 0xD1,
5507 0xFA, 0xF6, 0x6A, 0xA4, 0xDC, 0xB8
5510 /* Swap routines. */
5513 coff_bigobj_swap_filehdr_in (bfd * abfd, void * src, void * dst)
5515 struct external_ANON_OBJECT_HEADER_BIGOBJ *filehdr_src =
5516 (struct external_ANON_OBJECT_HEADER_BIGOBJ *) src;
5517 struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst;
5519 filehdr_dst->f_magic = H_GET_16 (abfd, filehdr_src->Machine);
5520 filehdr_dst->f_nscns = H_GET_32 (abfd, filehdr_src->NumberOfSections);
5521 filehdr_dst->f_timdat = H_GET_32 (abfd, filehdr_src->TimeDateStamp);
5522 filehdr_dst->f_symptr =
5523 GET_FILEHDR_SYMPTR (abfd, filehdr_src->PointerToSymbolTable);
5524 filehdr_dst->f_nsyms = H_GET_32 (abfd, filehdr_src->NumberOfSymbols);
5525 filehdr_dst->f_opthdr = 0;
5526 filehdr_dst->f_flags = 0;
5528 /* Check other magic numbers. */
5529 if (H_GET_16 (abfd, filehdr_src->Sig1) != IMAGE_FILE_MACHINE_UNKNOWN
5530 || H_GET_16 (abfd, filehdr_src->Sig2) != 0xffff
5531 || H_GET_16 (abfd, filehdr_src->Version) != 2
5532 || memcmp (filehdr_src->ClassID, header_bigobj_classid, 16) != 0)
5533 filehdr_dst->f_opthdr = 0xffff;
5535 /* Note that CLR metadata are ignored. */
5539 coff_bigobj_swap_filehdr_out (bfd *abfd, void * in, void * out)
5541 struct internal_filehdr *filehdr_in = (struct internal_filehdr *) in;
5542 struct external_ANON_OBJECT_HEADER_BIGOBJ *filehdr_out =
5543 (struct external_ANON_OBJECT_HEADER_BIGOBJ *) out;
5545 memset (filehdr_out, 0, sizeof (*filehdr_out));
5547 H_PUT_16 (abfd, IMAGE_FILE_MACHINE_UNKNOWN, filehdr_out->Sig1);
5548 H_PUT_16 (abfd, 0xffff, filehdr_out->Sig2);
5549 H_PUT_16 (abfd, 2, filehdr_out->Version);
5550 memcpy (filehdr_out->ClassID, header_bigobj_classid, 16);
5551 H_PUT_16 (abfd, filehdr_in->f_magic, filehdr_out->Machine);
5552 H_PUT_32 (abfd, filehdr_in->f_nscns, filehdr_out->NumberOfSections);
5553 H_PUT_32 (abfd, filehdr_in->f_timdat, filehdr_out->TimeDateStamp);
5554 PUT_FILEHDR_SYMPTR (abfd, filehdr_in->f_symptr,
5555 filehdr_out->PointerToSymbolTable);
5556 H_PUT_32 (abfd, filehdr_in->f_nsyms, filehdr_out->NumberOfSymbols);
5558 return bfd_coff_filhsz (abfd);
5562 coff_bigobj_swap_sym_in (bfd * abfd, void * ext1, void * in1)
5564 SYMENT_BIGOBJ *ext = (SYMENT_BIGOBJ *) ext1;
5565 struct internal_syment *in = (struct internal_syment *) in1;
5567 if (ext->e.e_name[0] == 0)
5569 in->_n._n_n._n_zeroes = 0;
5570 in->_n._n_n._n_offset = H_GET_32 (abfd, ext->e.e.e_offset);
5574 #if SYMNMLEN != E_SYMNMLEN
5575 #error we need to cope with truncating or extending SYMNMLEN
5577 memcpy (in->_n._n_name, ext->e.e_name, SYMNMLEN);
5581 in->n_value = H_GET_32 (abfd, ext->e_value);
5582 BFD_ASSERT (sizeof (in->n_scnum) >= 4);
5583 in->n_scnum = H_GET_32 (abfd, ext->e_scnum);
5584 in->n_type = H_GET_16 (abfd, ext->e_type);
5585 in->n_sclass = H_GET_8 (abfd, ext->e_sclass);
5586 in->n_numaux = H_GET_8 (abfd, ext->e_numaux);
5590 coff_bigobj_swap_sym_out (bfd * abfd, void * inp, void * extp)
5592 struct internal_syment *in = (struct internal_syment *) inp;
5593 SYMENT_BIGOBJ *ext = (SYMENT_BIGOBJ *) extp;
5595 if (in->_n._n_name[0] == 0)
5597 H_PUT_32 (abfd, 0, ext->e.e.e_zeroes);
5598 H_PUT_32 (abfd, in->_n._n_n._n_offset, ext->e.e.e_offset);
5602 #if SYMNMLEN != E_SYMNMLEN
5603 #error we need to cope with truncating or extending SYMNMLEN
5605 memcpy (ext->e.e_name, in->_n._n_name, SYMNMLEN);
5609 H_PUT_32 (abfd, in->n_value, ext->e_value);
5610 H_PUT_32 (abfd, in->n_scnum, ext->e_scnum);
5612 H_PUT_16 (abfd, in->n_type, ext->e_type);
5613 H_PUT_8 (abfd, in->n_sclass, ext->e_sclass);
5614 H_PUT_8 (abfd, in->n_numaux, ext->e_numaux);
5616 return SYMESZ_BIGOBJ;
5620 coff_bigobj_swap_aux_in (bfd *abfd,
5628 AUXENT_BIGOBJ *ext = (AUXENT_BIGOBJ *) ext1;
5629 union internal_auxent *in = (union internal_auxent *) in1;
5637 memcpy (in->x_file.x_fname, ext->File.Name,
5638 numaux * sizeof (AUXENT_BIGOBJ));
5641 memcpy (in->x_file.x_fname, ext->File.Name, sizeof (ext->File.Name));
5649 in->x_scn.x_scnlen = H_GET_32 (abfd, ext->Section.Length);
5650 in->x_scn.x_nreloc =
5651 H_GET_16 (abfd, ext->Section.NumberOfRelocations);
5652 in->x_scn.x_nlinno =
5653 H_GET_16 (abfd, ext->Section.NumberOfLinenumbers);
5654 in->x_scn.x_checksum = H_GET_32 (abfd, ext->Section.Checksum);
5655 in->x_scn.x_associated = H_GET_16 (abfd, ext->Section.Number)
5656 | (H_GET_16 (abfd, ext->Section.HighNumber) << 16);
5657 in->x_scn.x_comdat = H_GET_8 (abfd, ext->Section.Selection);
5663 in->x_sym.x_tagndx.l = H_GET_32 (abfd, ext->Sym.WeakDefaultSymIndex);
5664 /* Characteristics is ignored. */
5670 coff_bigobj_swap_aux_out (bfd * abfd,
5674 int indx ATTRIBUTE_UNUSED,
5675 int numaux ATTRIBUTE_UNUSED,
5678 union internal_auxent * in = (union internal_auxent *) inp;
5679 AUXENT_BIGOBJ *ext = (AUXENT_BIGOBJ *) extp;
5681 memset (ext, 0, AUXESZ);
5686 memcpy (ext->File.Name, in->x_file.x_fname, sizeof (ext->File.Name));
5695 H_PUT_32 (abfd, in->x_scn.x_scnlen, ext->Section.Length);
5696 H_PUT_16 (abfd, in->x_scn.x_nreloc,
5697 ext->Section.NumberOfRelocations);
5698 H_PUT_16 (abfd, in->x_scn.x_nlinno,
5699 ext->Section.NumberOfLinenumbers);
5700 H_PUT_32 (abfd, in->x_scn.x_checksum, ext->Section.Checksum);
5701 H_PUT_16 (abfd, in->x_scn.x_associated & 0xffff,
5702 ext->Section.Number);
5703 H_PUT_16 (abfd, (in->x_scn.x_associated >> 16),
5704 ext->Section.HighNumber);
5705 H_PUT_8 (abfd, in->x_scn.x_comdat, ext->Section.Selection);
5711 H_PUT_32 (abfd, in->x_sym.x_tagndx.l, ext->Sym.WeakDefaultSymIndex);
5712 H_PUT_32 (abfd, 1, ext->Sym.WeakSearchType);
5717 static bfd_coff_backend_data bigobj_swap_table =
5719 coff_bigobj_swap_aux_in, coff_bigobj_swap_sym_in, coff_SWAP_lineno_in,
5720 coff_bigobj_swap_aux_out, coff_bigobj_swap_sym_out,
5721 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5722 coff_bigobj_swap_filehdr_out, coff_SWAP_aouthdr_out,
5723 coff_SWAP_scnhdr_out,
5724 FILHSZ_BIGOBJ, AOUTSZ, SCNHSZ, SYMESZ_BIGOBJ, AUXESZ_BIGOBJ,
5725 RELSZ, LINESZ, FILNMLEN_BIGOBJ,
5727 COFF_DEFAULT_LONG_SECTION_NAMES,
5728 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5732 coff_bigobj_swap_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5733 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5734 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5735 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5736 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5737 coff_classify_symbol, coff_compute_section_file_positions,
5738 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5739 coff_adjust_symndx, coff_link_add_one_symbol,
5740 coff_link_output_has_begun, coff_final_link_postscript,
5741 bfd_pe_print_pdata /* huh */
5744 #endif /* COFF_WITH_PE_BIGOBJ */
5746 #ifndef coff_close_and_cleanup
5747 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5750 #ifndef coff_bfd_free_cached_info
5751 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5754 #ifndef coff_get_section_contents
5755 #define coff_get_section_contents _bfd_generic_get_section_contents
5758 #ifndef coff_bfd_copy_private_symbol_data
5759 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5762 #ifndef coff_bfd_copy_private_header_data
5763 #define coff_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
5766 #ifndef coff_bfd_copy_private_section_data
5767 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5770 #ifndef coff_bfd_copy_private_bfd_data
5771 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5774 #ifndef coff_bfd_merge_private_bfd_data
5775 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5778 #ifndef coff_bfd_set_private_flags
5779 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5782 #ifndef coff_bfd_print_private_bfd_data
5783 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5786 #ifndef coff_bfd_is_local_label_name
5787 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5790 #ifndef coff_bfd_is_target_special_symbol
5791 #define coff_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
5794 #ifndef coff_read_minisymbols
5795 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5798 #ifndef coff_minisymbol_to_symbol
5799 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5802 /* The reloc lookup routine must be supplied by each individual COFF
5804 #ifndef coff_bfd_reloc_type_lookup
5805 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5807 #ifndef coff_bfd_reloc_name_lookup
5808 #define coff_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
5811 #ifndef coff_bfd_get_relocated_section_contents
5812 #define coff_bfd_get_relocated_section_contents \
5813 bfd_generic_get_relocated_section_contents
5816 #ifndef coff_bfd_relax_section
5817 #define coff_bfd_relax_section bfd_generic_relax_section
5820 #ifndef coff_bfd_gc_sections
5821 #define coff_bfd_gc_sections bfd_coff_gc_sections
5824 #ifndef coff_bfd_lookup_section_flags
5825 #define coff_bfd_lookup_section_flags bfd_generic_lookup_section_flags
5828 #ifndef coff_bfd_merge_sections
5829 #define coff_bfd_merge_sections bfd_generic_merge_sections
5832 #ifndef coff_bfd_is_group_section
5833 #define coff_bfd_is_group_section bfd_generic_is_group_section
5836 #ifndef coff_bfd_discard_group
5837 #define coff_bfd_discard_group bfd_generic_discard_group
5840 #ifndef coff_section_already_linked
5841 #define coff_section_already_linked \
5842 _bfd_coff_section_already_linked
5845 #ifndef coff_bfd_define_common_symbol
5846 #define coff_bfd_define_common_symbol bfd_generic_define_common_symbol
5849 #ifndef coff_bfd_define_start_stop
5850 #define coff_bfd_define_start_stop bfd_generic_define_start_stop
5853 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5854 const bfd_target VAR = \
5857 bfd_target_coff_flavour, \
5858 BFD_ENDIAN_BIG, /* Data byte order is big. */ \
5859 BFD_ENDIAN_BIG, /* Header byte order is big. */ \
5860 /* object flags */ \
5861 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5862 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5863 /* section flags */ \
5864 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5865 UNDER, /* Leading symbol underscore. */ \
5866 '/', /* AR_pad_char. */ \
5867 15, /* AR_max_namelen. */ \
5868 0, /* match priority. */ \
5870 /* Data conversion functions. */ \
5871 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5872 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5873 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5875 /* Header conversion functions. */ \
5876 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5877 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5878 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5880 { /* bfd_check_format. */ \
5881 _bfd_dummy_target, \
5883 bfd_generic_archive_p, \
5886 { /* bfd_set_format. */ \
5887 _bfd_bool_bfd_false_error, \
5889 _bfd_generic_mkarchive, \
5890 _bfd_bool_bfd_false_error \
5892 { /* bfd_write_contents. */ \
5893 _bfd_bool_bfd_false_error, \
5894 coff_write_object_contents, \
5895 _bfd_write_archive_contents, \
5896 _bfd_bool_bfd_false_error \
5899 BFD_JUMP_TABLE_GENERIC (coff), \
5900 BFD_JUMP_TABLE_COPY (coff), \
5901 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5902 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5903 BFD_JUMP_TABLE_SYMBOLS (coff), \
5904 BFD_JUMP_TABLE_RELOCS (coff), \
5905 BFD_JUMP_TABLE_WRITE (coff), \
5906 BFD_JUMP_TABLE_LINK (coff), \
5907 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5914 #define CREATE_BIGHDR_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5915 const bfd_target VAR = \
5918 bfd_target_coff_flavour, \
5919 BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \
5920 BFD_ENDIAN_BIG, /* Header byte order is big. */ \
5921 /* object flags */ \
5922 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5923 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5924 /* section flags */ \
5925 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5926 UNDER, /* Leading symbol underscore. */ \
5927 '/', /* AR_pad_char. */ \
5928 15, /* AR_max_namelen. */ \
5929 0, /* match priority. */ \
5931 /* Data conversion functions. */ \
5932 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5933 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5934 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5936 /* Header conversion functions. */ \
5937 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5938 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5939 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5941 { /* bfd_check_format. */ \
5942 _bfd_dummy_target, \
5944 bfd_generic_archive_p, \
5947 { /* bfd_set_format. */ \
5948 _bfd_bool_bfd_false_error, \
5950 _bfd_generic_mkarchive, \
5951 _bfd_bool_bfd_false_error \
5953 { /* bfd_write_contents. */ \
5954 _bfd_bool_bfd_false_error, \
5955 coff_write_object_contents, \
5956 _bfd_write_archive_contents, \
5957 _bfd_bool_bfd_false_error \
5960 BFD_JUMP_TABLE_GENERIC (coff), \
5961 BFD_JUMP_TABLE_COPY (coff), \
5962 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5963 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5964 BFD_JUMP_TABLE_SYMBOLS (coff), \
5965 BFD_JUMP_TABLE_RELOCS (coff), \
5966 BFD_JUMP_TABLE_WRITE (coff), \
5967 BFD_JUMP_TABLE_LINK (coff), \
5968 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5975 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \
5976 const bfd_target VAR = \
5979 bfd_target_coff_flavour, \
5980 BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \
5981 BFD_ENDIAN_LITTLE, /* Header byte order is little. */ \
5982 /* object flags */ \
5983 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5984 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5985 /* section flags */ \
5986 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5987 UNDER, /* Leading symbol underscore. */ \
5988 '/', /* AR_pad_char. */ \
5989 15, /* AR_max_namelen. */ \
5990 0, /* match priority. */ \
5992 /* Data conversion functions. */ \
5993 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5994 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5995 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5996 /* Header conversion functions. */ \
5997 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5998 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5999 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
6001 { /* bfd_check_format. */ \
6002 _bfd_dummy_target, \
6004 bfd_generic_archive_p, \
6007 { /* bfd_set_format. */ \
6008 _bfd_bool_bfd_false_error, \
6010 _bfd_generic_mkarchive, \
6011 _bfd_bool_bfd_false_error \
6013 { /* bfd_write_contents. */ \
6014 _bfd_bool_bfd_false_error, \
6015 coff_write_object_contents, \
6016 _bfd_write_archive_contents, \
6017 _bfd_bool_bfd_false_error \
6020 BFD_JUMP_TABLE_GENERIC (coff), \
6021 BFD_JUMP_TABLE_COPY (coff), \
6022 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
6023 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
6024 BFD_JUMP_TABLE_SYMBOLS (coff), \
6025 BFD_JUMP_TABLE_RELOCS (coff), \
6026 BFD_JUMP_TABLE_WRITE (coff), \
6027 BFD_JUMP_TABLE_LINK (coff), \
6028 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \