1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 Most of this hacked by Steve Chamberlain,
32 BFD supports a number of different flavours of coff format.
33 The major differences between formats are the sizes and
34 alignments of fields in structures on disk, and the occasional
37 Coff in all its varieties is implemented with a few common
38 files and a number of implementation specific files. For
39 example, The 88k bcs coff format is implemented in the file
40 @file{coff-m88k.c}. This file @code{#include}s
41 @file{coff/m88k.h} which defines the external structure of the
42 coff format for the 88k, and @file{coff/internal.h} which
43 defines the internal structure. @file{coff-m88k.c} also
44 defines the relocations used by the 88k format
47 The Intel i960 processor version of coff is implemented in
48 @file{coff-i960.c}. This file has the same structure as
49 @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
50 rather than @file{coff-m88k.h}.
53 Porting to a new version of coff
55 The recommended method is to select from the existing
56 implementations the version of coff which is most like the one
57 you want to use. For example, we'll say that i386 coff is
58 the one you select, and that your coff flavour is called foo.
59 Copy @file{i386coff.c} to @file{foocoff.c}, copy
60 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
61 and add the lines to @file{targets.c} and @file{Makefile.in}
62 so that your new back end is used. Alter the shapes of the
63 structures in @file{../include/coff/foo.h} so that they match
64 what you need. You will probably also have to add
65 @code{#ifdef}s to the code in @file{coff/internal.h} and
66 @file{coffcode.h} if your version of coff is too wild.
68 You can verify that your new BFD backend works quite simply by
69 building @file{objdump} from the @file{binutils} directory,
70 and making sure that its version of what's going on and your
71 host system's idea (assuming it has the pretty standard coff
72 dump utility, usually called @code{att-dump} or just
73 @code{dump}) are the same. Then clean up your code, and send
74 what you've done to Cygnus. Then your stuff will be in the
75 next release, and you won't have to keep integrating it.
78 How the coff backend works
83 The Coff backend is split into generic routines that are
84 applicable to any Coff target and routines that are specific
85 to a particular target. The target-specific routines are
86 further split into ones which are basically the same for all
87 Coff targets except that they use the external symbol format
88 or use different values for certain constants.
90 The generic routines are in @file{coffgen.c}. These routines
91 work for any Coff target. They use some hooks into the target
92 specific code; the hooks are in a @code{bfd_coff_backend_data}
93 structure, one of which exists for each target.
95 The essentially similar target-specific routines are in
96 @file{coffcode.h}. This header file includes executable C code.
97 The various Coff targets first include the appropriate Coff
98 header file, make any special defines that are needed, and
99 then include @file{coffcode.h}.
101 Some of the Coff targets then also have additional routines in
102 the target source file itself.
104 For example, @file{coff-i960.c} includes
105 @file{coff/internal.h} and @file{coff/i960.h}. It then
106 defines a few constants, such as @code{I960}, and includes
107 @file{coffcode.h}. Since the i960 has complex relocation
108 types, @file{coff-i960.c} also includes some code to
109 manipulate the i960 relocs. This code is not in
110 @file{coffcode.h} because it would not be used by any other
116 Each flavour of coff supported in BFD has its own header file
117 describing the external layout of the structures. There is also
118 an internal description of the coff layout, in
119 @file{coff/internal.h}. A major function of the
120 coff backend is swapping the bytes and twiddling the bits to
121 translate the external form of the structures into the normal
122 internal form. This is all performed in the
123 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
124 elements are different sizes between different versions of
125 coff; it is the duty of the coff version specific include file
126 to override the definitions of various packing routines in
127 @file{coffcode.h}. E.g., the size of line number entry in coff is
128 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
129 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
130 correct one. No doubt, some day someone will find a version of
131 coff which has a varying field size not catered to at the
132 moment. To port BFD, that person will have to add more @code{#defines}.
133 Three of the bit twiddling routines are exported to
134 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
135 and @code{coff_swap_lineno_in}. @code{GDB} reads the symbol
136 table on its own, but uses BFD to fix things up. More of the
137 bit twiddlers are exported for @code{gas};
138 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
139 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
140 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
141 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
142 of all the symbol table and reloc drudgery itself, thereby
143 saving the internal BFD overhead, but uses BFD to swap things
144 on the way out, making cross ports much safer. Doing so also
145 allows BFD (and thus the linker) to use the same header files
146 as @code{gas}, which makes one avenue to disaster disappear.
151 The simple canonical form for symbols used by BFD is not rich
152 enough to keep all the information available in a coff symbol
153 table. The back end gets around this problem by keeping the original
154 symbol table around, "behind the scenes".
156 When a symbol table is requested (through a call to
157 @code{bfd_canonicalize_symtab}), a request gets through to
158 @code{coff_get_normalized_symtab}. This reads the symbol table from
159 the coff file and swaps all the structures inside into the
160 internal form. It also fixes up all the pointers in the table
161 (represented in the file by offsets from the first symbol in
162 the table) into physical pointers to elements in the new
163 internal table. This involves some work since the meanings of
164 fields change depending upon context: a field that is a
165 pointer to another structure in the symbol table at one moment
166 may be the size in bytes of a structure at the next. Another
167 pass is made over the table. All symbols which mark file names
168 (<<C_FILE>> symbols) are modified so that the internal
169 string points to the value in the auxent (the real filename)
170 rather than the normal text associated with the symbol
173 At this time the symbol names are moved around. Coff stores
174 all symbols less than nine characters long physically
175 within the symbol table; longer strings are kept at the end of
176 the file in the string table. This pass moves all strings
177 into memory and replaces them with pointers to the strings.
179 The symbol table is massaged once again, this time to create
180 the canonical table used by the BFD application. Each symbol
181 is inspected in turn, and a decision made (using the
182 @code{sclass} field) about the various flags to set in the
183 @code{asymbol}. @xref{Symbols}. The generated canonical table
184 shares strings with the hidden internal symbol table.
186 Any linenumbers are read from the coff file too, and attached
187 to the symbols which own the functions the linenumbers belong to.
192 Writing a symbol to a coff file which didn't come from a coff
193 file will lose any debugging information. The @code{asymbol}
194 structure remembers the BFD from which the symbol was taken, and on
195 output the back end makes sure that the same destination target as
196 source target is present.
198 When the symbols have come from a coff file then all the
199 debugging information is preserved.
201 Symbol tables are provided for writing to the back end in a
202 vector of pointers to pointers. This allows applications like
203 the linker to accumulate and output large symbol tables
204 without having to do too much byte copying.
206 This function runs through the provided symbol table and
207 patches each symbol marked as a file place holder
208 (@code{C_FILE}) to point to the next file place holder in the
209 list. It also marks each @code{offset} field in the list with
210 the offset from the first symbol of the current symbol.
212 Another function of this procedure is to turn the canonical
213 value form of BFD into the form used by coff. Internally, BFD
214 expects symbol values to be offsets from a section base; so a
215 symbol physically at 0x120, but in a section starting at
216 0x100, would have the value 0x20. Coff expects symbols to
217 contain their final value, so symbols have their values
218 changed at this point to reflect their sum with their owning
219 section. This transformation uses the
220 <<output_section>> field of the @code{asymbol}'s
221 @code{asection} @xref{Sections}.
223 o <<coff_mangle_symbols>>
225 This routine runs though the provided symbol table and uses
226 the offsets generated by the previous pass and the pointers
227 generated when the symbol table was read in to create the
228 structured hierarchy required by coff. It changes each pointer
229 to a symbol into the index into the symbol table of the asymbol.
231 o <<coff_write_symbols>>
233 This routine runs through the symbol table and patches up the
234 symbols from their internal form into the coff way, calls the
235 bit twiddlers, and writes out the table to the file.
244 The hidden information for an <<asymbol>> is described in a
245 <<combined_entry_type>>:
249 .typedef struct coff_ptr_struct
251 . {* Remembers the offset from the first symbol in the file for
252 . this symbol. Generated by coff_renumber_symbols. *}
253 . unsigned int offset;
255 . {* Should the value of this symbol be renumbered. Used for
256 . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
257 . unsigned int fix_value : 1;
259 . {* Should the tag field of this symbol be renumbered.
260 . Created by coff_pointerize_aux. *}
261 . unsigned int fix_tag : 1;
263 . {* Should the endidx field of this symbol be renumbered.
264 . Created by coff_pointerize_aux. *}
265 . unsigned int fix_end : 1;
267 . {* Should the x_csect.x_scnlen field be renumbered.
268 . Created by coff_pointerize_aux. *}
269 . unsigned int fix_scnlen : 1;
271 . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
272 . index into the line number entries. Set by coff_slurp_symbol_table. *}
273 . unsigned int fix_line : 1;
275 . {* The container for the symbol structure as read and translated
279 . union internal_auxent auxent;
280 . struct internal_syment syment;
282 .} combined_entry_type;
285 .{* Each canonical asymbol really looks like this: *}
287 .typedef struct coff_symbol_struct
289 . {* The actual symbol which the rest of BFD works with *}
292 . {* A pointer to the hidden information for this symbol *}
293 . combined_entry_type *native;
295 . {* A pointer to the linenumber information for this symbol *}
296 . struct lineno_cache_entry *lineno;
298 . {* Have the line numbers been relocated yet ? *}
299 . bfd_boolean done_lineno;
307 #include "coffswap.h"
310 #define STRING_SIZE_SIZE (4)
312 static long sec_to_styp_flags
313 PARAMS ((const char *, flagword));
314 static bfd_boolean styp_to_sec_flags
315 PARAMS ((bfd *, PTR, const char *, asection *, flagword *));
316 static bfd_boolean coff_bad_format_hook
317 PARAMS ((bfd *, PTR));
318 static void coff_set_custom_section_alignment
319 PARAMS ((bfd *, asection *, const struct coff_section_alignment_entry *,
320 const unsigned int));
321 static bfd_boolean coff_new_section_hook
322 PARAMS ((bfd *, asection *));
323 static bfd_boolean coff_set_arch_mach_hook
324 PARAMS ((bfd *, PTR));
325 static bfd_boolean coff_write_relocs
326 PARAMS ((bfd *, int));
327 static bfd_boolean coff_set_flags
328 PARAMS ((bfd *, unsigned int *, unsigned short *));
329 static bfd_boolean coff_set_arch_mach
330 PARAMS ((bfd *, enum bfd_architecture, unsigned long)) ATTRIBUTE_UNUSED;
331 static bfd_boolean coff_compute_section_file_positions
333 static bfd_boolean coff_write_object_contents
334 PARAMS ((bfd *)) ATTRIBUTE_UNUSED;
335 static bfd_boolean coff_set_section_contents
336 PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
337 static PTR buy_and_read
338 PARAMS ((bfd *, file_ptr, bfd_size_type));
339 static bfd_boolean coff_slurp_line_table
340 PARAMS ((bfd *, asection *));
341 static bfd_boolean coff_slurp_symbol_table
343 static enum coff_symbol_classification coff_classify_symbol
344 PARAMS ((bfd *, struct internal_syment *));
345 static bfd_boolean coff_slurp_reloc_table
346 PARAMS ((bfd *, asection *, asymbol **));
347 static long coff_canonicalize_reloc
348 PARAMS ((bfd *, asection *, arelent **, asymbol **));
349 #ifndef coff_mkobject_hook
350 static PTR coff_mkobject_hook
351 PARAMS ((bfd *, PTR, PTR));
354 static flagword handle_COMDAT
355 PARAMS ((bfd *, flagword, PTR, const char *, asection *));
357 #ifdef COFF_IMAGE_WITH_PE
358 static bfd_boolean coff_read_word
359 PARAMS ((bfd *, unsigned int *));
360 static unsigned int coff_compute_checksum
362 static bfd_boolean coff_apply_checksum
366 /* void warning(); */
368 /* Return a word with STYP_* (scnhdr.s_flags) flags set to represent
369 the incoming SEC_* flags. The inverse of this function is
370 styp_to_sec_flags(). NOTE: If you add to/change this routine, you
371 should probably mirror the changes in styp_to_sec_flags(). */
375 /* Macros for setting debugging flags. */
377 #define STYP_XCOFF_DEBUG STYP_DEBUG
379 #define STYP_XCOFF_DEBUG STYP_INFO
382 #ifdef COFF_ALIGN_IN_S_FLAGS
383 #define STYP_DEBUG_INFO STYP_DSECT
385 #define STYP_DEBUG_INFO STYP_INFO
389 sec_to_styp_flags (sec_name, sec_flags)
390 const char *sec_name;
395 if (!strcmp (sec_name, _TEXT))
397 styp_flags = STYP_TEXT;
399 else if (!strcmp (sec_name, _DATA))
401 styp_flags = STYP_DATA;
403 else if (!strcmp (sec_name, _BSS))
405 styp_flags = STYP_BSS;
408 else if (!strcmp (sec_name, _COMMENT))
410 styp_flags = STYP_INFO;
411 #endif /* _COMMENT */
414 else if (!strcmp (sec_name, _LIB))
416 styp_flags = STYP_LIB;
420 else if (!strcmp (sec_name, _LIT))
422 styp_flags = STYP_LIT;
425 else if (!strncmp (sec_name, ".debug", 6))
427 /* Handle the XCOFF debug section and DWARF2 debug sections. */
429 styp_flags = STYP_XCOFF_DEBUG;
431 styp_flags = STYP_DEBUG_INFO;
433 else if (!strncmp (sec_name, ".stab", 5))
435 styp_flags = STYP_DEBUG_INFO;
437 #ifdef COFF_LONG_SECTION_NAMES
438 else if (!strncmp (sec_name, ".gnu.linkonce.wi.", 17))
440 styp_flags = STYP_DEBUG_INFO;
444 else if (!strcmp (sec_name, _PAD))
446 styp_flags = STYP_PAD;
448 else if (!strcmp (sec_name, _LOADER))
450 styp_flags = STYP_LOADER;
452 else if (!strcmp (sec_name, _EXCEPT))
454 styp_flags = STYP_EXCEPT;
456 else if (!strcmp (sec_name, _TYPCHK))
458 styp_flags = STYP_TYPCHK;
461 /* Try and figure out what it should be */
462 else if (sec_flags & SEC_CODE)
464 styp_flags = STYP_TEXT;
466 else if (sec_flags & SEC_DATA)
468 styp_flags = STYP_DATA;
470 else if (sec_flags & SEC_READONLY)
472 #ifdef STYP_LIT /* 29k readonly text/data section */
473 styp_flags = STYP_LIT;
475 styp_flags = STYP_TEXT;
476 #endif /* STYP_LIT */
478 else if (sec_flags & SEC_LOAD)
480 styp_flags = STYP_TEXT;
482 else if (sec_flags & SEC_ALLOC)
484 styp_flags = STYP_BSS;
488 if (sec_flags & SEC_CLINK)
489 styp_flags |= STYP_CLINK;
493 if (sec_flags & SEC_BLOCK)
494 styp_flags |= STYP_BLOCK;
498 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
499 styp_flags |= STYP_NOLOAD;
505 #else /* COFF_WITH_PE */
507 /* The PE version; see above for the general comments. The non-PE
508 case seems to be more guessing, and breaks PE format; specifically,
509 .rdata is readonly, but it sure ain't text. Really, all this
510 should be set up properly in gas (or whatever assembler is in use),
511 and honor whatever objcopy/strip, etc. sent us as input. */
514 sec_to_styp_flags (sec_name, sec_flags)
515 const char *sec_name ATTRIBUTE_UNUSED;
520 /* caution: there are at least three groups of symbols that have
521 very similar bits and meanings: IMAGE_SCN*, SEC_*, and STYP_*.
522 SEC_* are the BFD internal flags, used for generic BFD
523 information. STYP_* are the COFF section flags which appear in
524 COFF files. IMAGE_SCN_* are the PE section flags which appear in
525 PE files. The STYP_* flags and the IMAGE_SCN_* flags overlap,
526 but there are more IMAGE_SCN_* flags. */
531 if ((sec_flags & SEC_CODE) != 0)
532 styp_flags |= IMAGE_SCN_CNT_CODE;
533 if ((sec_flags & SEC_DATA) != 0)
534 styp_flags |= IMAGE_SCN_CNT_INITIALIZED_DATA;
535 if ((sec_flags & SEC_ALLOC) != 0 && (sec_flags & SEC_LOAD) == 0)
536 styp_flags |= IMAGE_SCN_CNT_UNINITIALIZED_DATA; /* ==STYP_BSS */
538 /* skip constRUCTOR */
541 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
542 styp_flags |= STYP_NOLOAD;
544 if ((sec_flags & SEC_IS_COMMON) != 0)
545 styp_flags |= IMAGE_SCN_LNK_COMDAT;
546 if ((sec_flags & SEC_DEBUGGING) != 0)
547 styp_flags |= IMAGE_SCN_MEM_DISCARDABLE;
548 if ((sec_flags & SEC_EXCLUDE) != 0)
549 styp_flags |= IMAGE_SCN_LNK_REMOVE;
550 if ((sec_flags & SEC_NEVER_LOAD) != 0)
551 styp_flags |= IMAGE_SCN_LNK_REMOVE;
554 if (sec_flags & SEC_LINK_ONCE)
555 styp_flags |= IMAGE_SCN_LNK_COMDAT;
556 /* skip LINK_DUPLICATES */
557 /* skip LINKER_CREATED */
559 /* For now, the read/write bits are mapped onto SEC_READONLY, even
560 though the semantics don't quite match. The bits from the input
561 are retained in pei_section_data(abfd, section)->pe_flags. */
563 styp_flags |= IMAGE_SCN_MEM_READ; /* Always readable. */
564 if ((sec_flags & SEC_READONLY) == 0)
565 styp_flags |= IMAGE_SCN_MEM_WRITE; /* Invert READONLY for write. */
566 if (sec_flags & SEC_CODE)
567 styp_flags |= IMAGE_SCN_MEM_EXECUTE; /* CODE->EXECUTE. */
568 if (sec_flags & SEC_SHARED)
569 styp_flags |= IMAGE_SCN_MEM_SHARED; /* Shared remains meaningful. */
574 #endif /* COFF_WITH_PE */
576 /* Return a word with SEC_* flags set to represent the incoming STYP_*
577 flags (from scnhdr.s_flags). The inverse of this function is
578 sec_to_styp_flags(). NOTE: If you add to/change this routine, you
579 should probably mirror the changes in sec_to_styp_flags(). */
584 styp_to_sec_flags (abfd, hdr, name, section, flags_ptr)
585 bfd *abfd ATTRIBUTE_UNUSED;
588 asection *section ATTRIBUTE_UNUSED;
591 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
592 long styp_flags = internal_s->s_flags;
593 flagword sec_flags = 0;
596 if (styp_flags & STYP_BLOCK)
597 sec_flags |= SEC_BLOCK;
601 if (styp_flags & STYP_CLINK)
602 sec_flags |= SEC_CLINK;
606 if (styp_flags & STYP_NOLOAD)
607 sec_flags |= SEC_NEVER_LOAD;
608 #endif /* STYP_NOLOAD */
610 /* For 386 COFF, at least, an unloadable text or data section is
611 actually a shared library section. */
612 if (styp_flags & STYP_TEXT)
614 if (sec_flags & SEC_NEVER_LOAD)
615 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
617 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
619 else if (styp_flags & STYP_DATA)
621 if (sec_flags & SEC_NEVER_LOAD)
622 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
624 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
626 else if (styp_flags & STYP_BSS)
628 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
629 if (sec_flags & SEC_NEVER_LOAD)
630 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
633 sec_flags |= SEC_ALLOC;
635 else if (styp_flags & STYP_INFO)
637 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
638 defined. coff_compute_section_file_positions uses
639 COFF_PAGE_SIZE to ensure that the low order bits of the
640 section VMA and the file offset match. If we don't know
641 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
642 and demand page loading of the file will fail. */
643 #if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS)
644 sec_flags |= SEC_DEBUGGING;
647 else if (styp_flags & STYP_PAD)
649 else if (strcmp (name, _TEXT) == 0)
651 if (sec_flags & SEC_NEVER_LOAD)
652 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
654 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
656 else if (strcmp (name, _DATA) == 0)
658 if (sec_flags & SEC_NEVER_LOAD)
659 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
661 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
663 else if (strcmp (name, _BSS) == 0)
665 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
666 if (sec_flags & SEC_NEVER_LOAD)
667 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
670 sec_flags |= SEC_ALLOC;
672 else if (strncmp (name, ".debug", 6) == 0
674 || strcmp (name, _COMMENT) == 0
676 #ifdef COFF_LONG_SECTION_NAMES
677 || strncmp (name, ".gnu.linkonce.wi.", 17) == 0
679 || strncmp (name, ".stab", 5) == 0)
681 #ifdef COFF_PAGE_SIZE
682 sec_flags |= SEC_DEBUGGING;
686 else if (strcmp (name, _LIB) == 0)
690 else if (strcmp (name, _LIT) == 0)
691 sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY;
694 sec_flags |= SEC_ALLOC | SEC_LOAD;
696 #ifdef STYP_LIT /* A29k readonly text/data section type. */
697 if ((styp_flags & STYP_LIT) == STYP_LIT)
698 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
699 #endif /* STYP_LIT */
701 #ifdef STYP_OTHER_LOAD /* Other loaded sections. */
702 if (styp_flags & STYP_OTHER_LOAD)
703 sec_flags = (SEC_LOAD | SEC_ALLOC);
704 #endif /* STYP_SDATA */
706 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
707 /* As a GNU extension, if the name begins with .gnu.linkonce, we
708 only link a single copy of the section. This is used to support
709 g++. g++ will emit each template expansion in its own section.
710 The symbols will be defined as weak, so that multiple definitions
711 are permitted. The GNU linker extension is to actually discard
712 all but one of the sections. */
713 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
714 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
717 if (flags_ptr == NULL)
720 * flags_ptr = sec_flags;
724 #else /* COFF_WITH_PE */
727 handle_COMDAT (abfd, sec_flags, hdr, name, section)
734 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
735 bfd_byte *esymstart, *esym, *esymend;
737 char *target_name = NULL;
739 sec_flags |= SEC_LINK_ONCE;
741 /* Unfortunately, the PE format stores essential information in
742 the symbol table, of all places. We need to extract that
743 information now, so that objdump and the linker will know how
744 to handle the section without worrying about the symbols. We
745 can't call slurp_symtab, because the linker doesn't want the
748 /* COMDAT sections are special. The first symbol is the section
749 symbol, which tells what kind of COMDAT section it is. The
750 second symbol is the "comdat symbol" - the one with the
751 unique name. GNU uses the section symbol for the unique
752 name; MS uses ".text" for every comdat section. Sigh. - DJ */
754 /* This is not mirrored in sec_to_styp_flags(), but there
755 doesn't seem to be a need to, either, and it would at best be
758 if (! _bfd_coff_get_external_symbols (abfd))
761 esymstart = esym = (bfd_byte *) obj_coff_external_syms (abfd);
762 esymend = esym + obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd);
764 while (esym < esymend)
766 struct internal_syment isym;
767 char buf[SYMNMLEN + 1];
770 bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &isym);
772 if (sizeof (internal_s->s_name) > SYMNMLEN)
774 /* This case implies that the matching
775 symbol name will be in the string table. */
779 if (isym.n_scnum == section->target_index)
781 /* According to the MSVC documentation, the first
782 TWO entries with the section # are both of
783 interest to us. The first one is the "section
784 symbol" (section name). The second is the comdat
785 symbol name. Here, we've found the first
786 qualifying entry; we distinguish it from the
787 second with a state flag.
789 In the case of gas-generated (at least until that
790 is fixed) .o files, it isn't necessarily the
791 second one. It may be some other later symbol.
793 Since gas also doesn't follow MS conventions and
794 emits the section similar to .text$<name>, where
795 <something> is the name we're looking for, we
796 distinguish the two as follows:
798 If the section name is simply a section name (no
799 $) we presume it's MS-generated, and look at
800 precisely the second symbol for the comdat name.
801 If the section name has a $, we assume it's
802 gas-generated, and look for <something> (whatever
803 follows the $) as the comdat symbol. */
805 /* All 3 branches use this. */
806 symname = _bfd_coff_internal_syment_name (abfd, &isym, buf);
815 /* The first time we've seen the symbol. */
816 union internal_auxent aux;
820 /* If it isn't the stuff we're expecting, die;
821 The MS documentation is vague, but it
822 appears that the second entry serves BOTH
823 as the comdat symbol and the defining
824 symbol record (either C_STAT or C_EXT,
825 possibly with an aux entry with debug
826 information if it's a function.) It
827 appears the only way to find the second one
828 is to count. (On Intel, they appear to be
829 adjacent, but on Alpha, they have been
832 Here, we think we've found the first one,
833 but there's some checking we can do to be
836 if (! (isym.n_sclass == C_STAT
837 && isym.n_type == T_NULL
838 && isym.n_value == 0))
841 /* FIXME LATER: MSVC generates section names
842 like .text for comdats. Gas generates
843 names like .text$foo__Fv (in the case of a
844 function). See comment above for more. */
846 if (strcmp (name, symname) != 0)
849 /* This is the section symbol. */
850 bfd_coff_swap_aux_in (abfd, (PTR) (esym + bfd_coff_symesz (abfd)),
851 isym.n_type, isym.n_sclass,
852 0, isym.n_numaux, (PTR) &aux);
854 target_name = strchr (name, '$');
855 if (target_name != NULL)
863 /* FIXME: Microsoft uses NODUPLICATES and
864 ASSOCIATIVE, but gnu uses ANY and
865 SAME_SIZE. Unfortunately, gnu doesn't do
866 the comdat symbols right. So, until we can
867 fix it to do the right thing, we are
868 temporarily disabling comdats for the MS
869 types (they're used in DLLs and C++, but we
870 don't support *their* C++ libraries anyway
873 /* Cygwin does not follow the MS style, and
874 uses ANY and SAME_SIZE where NODUPLICATES
875 and ASSOCIATIVE should be used. For
876 Interix, we just do the right thing up
879 switch (aux.x_scn.x_comdat)
881 case IMAGE_COMDAT_SELECT_NODUPLICATES:
882 #ifdef STRICT_PE_FORMAT
883 sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
885 sec_flags &= ~SEC_LINK_ONCE;
889 case IMAGE_COMDAT_SELECT_ANY:
890 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
893 case IMAGE_COMDAT_SELECT_SAME_SIZE:
894 sec_flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
897 case IMAGE_COMDAT_SELECT_EXACT_MATCH:
898 /* Not yet fully implemented ??? */
899 sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
902 /* debug$S gets this case; other
905 /* There may be no symbol... we'll search
906 the whole table... Is this the right
907 place to play this game? Or should we do
908 it when reading it in. */
909 case IMAGE_COMDAT_SELECT_ASSOCIATIVE:
910 #ifdef STRICT_PE_FORMAT
911 /* FIXME: This is not currently implemented. */
912 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
914 sec_flags &= ~SEC_LINK_ONCE;
918 default: /* 0 means "no symbol" */
919 /* debug$F gets this case; other
921 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
928 /* Gas mode: the first matching on partial name. */
930 #ifndef TARGET_UNDERSCORE
931 #define TARGET_UNDERSCORE 0
933 /* Is this the name we're looking for ? */
934 if (strcmp (target_name,
935 symname + (TARGET_UNDERSCORE ? 1 : 0)) != 0)
937 /* Not the name we're looking for */
938 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
943 /* MSVC mode: the lexically second symbol (or
944 drop through from the above). */
949 /* This must the second symbol with the
950 section #. It is the actual symbol name.
951 Intel puts the two adjacent, but Alpha (at
952 least) spreads them out. */
954 amt = sizeof (struct bfd_comdat_info);
955 section->comdat = bfd_alloc (abfd, amt);
956 if (section->comdat == NULL)
959 section->comdat->symbol =
960 (esym - esymstart) / bfd_coff_symesz (abfd);
962 amt = strlen (symname) + 1;
963 newname = bfd_alloc (abfd, amt);
967 strcpy (newname, symname);
968 section->comdat->name = newname;
975 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
983 /* The PE version; see above for the general comments.
985 Since to set the SEC_LINK_ONCE and associated flags, we have to
986 look at the symbol table anyway, we return the symbol table index
987 of the symbol being used as the COMDAT symbol. This is admittedly
988 ugly, but there's really nowhere else that we have access to the
989 required information. FIXME: Is the COMDAT symbol index used for
990 any purpose other than objdump? */
993 styp_to_sec_flags (abfd, hdr, name, section, flags_ptr)
1000 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
1001 long styp_flags = internal_s->s_flags;
1003 bfd_boolean result = TRUE;
1005 /* Assume read only unless IMAGE_SCN_MEM_WRITE is specified. */
1006 sec_flags = SEC_READONLY;
1008 /* Process each flag bit in styp_flags in turn. */
1011 long flag = styp_flags & - styp_flags;
1012 char * unhandled = NULL;
1014 styp_flags &= ~ flag;
1016 /* We infer from the distinct read/write/execute bits the settings
1017 of some of the bfd flags; the actual values, should we need them,
1018 are also in pei_section_data (abfd, section)->pe_flags. */
1023 unhandled = "STYP_DSECT";
1026 unhandled = "STYP_GROUP";
1029 unhandled = "STYP_COPY";
1032 unhandled = "STYP_OVER";
1034 #ifdef SEC_NEVER_LOAD
1036 sec_flags |= SEC_NEVER_LOAD;
1039 case IMAGE_SCN_MEM_READ:
1040 /* Ignored, assume it always to be true. */
1042 case IMAGE_SCN_TYPE_NO_PAD:
1045 case IMAGE_SCN_LNK_OTHER:
1046 unhandled = "IMAGE_SCN_LNK_OTHER";
1048 case IMAGE_SCN_MEM_NOT_CACHED:
1049 unhandled = "IMAGE_SCN_MEM_NOT_CACHED";
1051 case IMAGE_SCN_MEM_NOT_PAGED:
1052 unhandled = "IMAGE_SCN_MEM_NOT_PAGED";
1054 case IMAGE_SCN_MEM_EXECUTE:
1055 sec_flags |= SEC_CODE;
1057 case IMAGE_SCN_MEM_WRITE:
1058 sec_flags &= ~ SEC_READONLY;
1060 case IMAGE_SCN_MEM_DISCARDABLE:
1061 sec_flags |= SEC_DEBUGGING;
1063 case IMAGE_SCN_MEM_SHARED:
1064 sec_flags |= SEC_SHARED;
1066 case IMAGE_SCN_LNK_REMOVE:
1067 sec_flags |= SEC_EXCLUDE;
1069 case IMAGE_SCN_CNT_CODE:
1070 sec_flags |= SEC_CODE | SEC_ALLOC | SEC_LOAD;
1072 case IMAGE_SCN_CNT_INITIALIZED_DATA:
1073 sec_flags |= SEC_DATA | SEC_ALLOC | SEC_LOAD;
1075 case IMAGE_SCN_CNT_UNINITIALIZED_DATA:
1076 sec_flags |= SEC_ALLOC;
1078 case IMAGE_SCN_LNK_INFO:
1079 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
1080 defined. coff_compute_section_file_positions uses
1081 COFF_PAGE_SIZE to ensure that the low order bits of the
1082 section VMA and the file offset match. If we don't know
1083 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
1084 and demand page loading of the file will fail. */
1085 #ifdef COFF_PAGE_SIZE
1086 sec_flags |= SEC_DEBUGGING;
1089 case IMAGE_SCN_LNK_COMDAT:
1090 /* COMDAT gets very special treatment. */
1091 sec_flags = handle_COMDAT (abfd, sec_flags, hdr, name, section);
1094 /* Silently ignore for now. */
1098 /* If the section flag was not handled, report it here. */
1099 if (unhandled != NULL)
1101 (*_bfd_error_handler)
1102 (_("%s (%s): Section flag %s (0x%x) ignored"),
1103 bfd_archive_filename (abfd), name, unhandled, flag);
1108 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
1109 /* As a GNU extension, if the name begins with .gnu.linkonce, we
1110 only link a single copy of the section. This is used to support
1111 g++. g++ will emit each template expansion in its own section.
1112 The symbols will be defined as weak, so that multiple definitions
1113 are permitted. The GNU linker extension is to actually discard
1114 all but one of the sections. */
1115 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
1116 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1120 * flags_ptr = sec_flags;
1125 #endif /* COFF_WITH_PE */
1127 #define get_index(symbol) ((symbol)->udata.i)
1131 bfd_coff_backend_data
1135 .{* COFF symbol classifications. *}
1137 .enum coff_symbol_classification
1139 . {* Global symbol. *}
1140 . COFF_SYMBOL_GLOBAL,
1141 . {* Common symbol. *}
1142 . COFF_SYMBOL_COMMON,
1143 . {* Undefined symbol. *}
1144 . COFF_SYMBOL_UNDEFINED,
1145 . {* Local symbol. *}
1146 . COFF_SYMBOL_LOCAL,
1147 . {* PE section symbol. *}
1148 . COFF_SYMBOL_PE_SECTION
1151 Special entry points for gdb to swap in coff symbol table parts:
1154 . void (*_bfd_coff_swap_aux_in)
1155 . PARAMS ((bfd *, PTR, int, int, int, int, PTR));
1157 . void (*_bfd_coff_swap_sym_in)
1158 . PARAMS ((bfd *, PTR, PTR));
1160 . void (*_bfd_coff_swap_lineno_in)
1161 . PARAMS ((bfd *, PTR, PTR));
1163 . unsigned int (*_bfd_coff_swap_aux_out)
1164 . PARAMS ((bfd *, PTR, int, int, int, int, PTR));
1166 . unsigned int (*_bfd_coff_swap_sym_out)
1167 . PARAMS ((bfd *, PTR, PTR));
1169 . unsigned int (*_bfd_coff_swap_lineno_out)
1170 . PARAMS ((bfd *, PTR, PTR));
1172 . unsigned int (*_bfd_coff_swap_reloc_out)
1173 . PARAMS ((bfd *, PTR, PTR));
1175 . unsigned int (*_bfd_coff_swap_filehdr_out)
1176 . PARAMS ((bfd *, PTR, PTR));
1178 . unsigned int (*_bfd_coff_swap_aouthdr_out)
1179 . PARAMS ((bfd *, PTR, PTR));
1181 . unsigned int (*_bfd_coff_swap_scnhdr_out)
1182 . PARAMS ((bfd *, PTR, PTR));
1184 . unsigned int _bfd_filhsz;
1185 . unsigned int _bfd_aoutsz;
1186 . unsigned int _bfd_scnhsz;
1187 . unsigned int _bfd_symesz;
1188 . unsigned int _bfd_auxesz;
1189 . unsigned int _bfd_relsz;
1190 . unsigned int _bfd_linesz;
1191 . unsigned int _bfd_filnmlen;
1192 . bfd_boolean _bfd_coff_long_filenames;
1193 . bfd_boolean _bfd_coff_long_section_names;
1194 . unsigned int _bfd_coff_default_section_alignment_power;
1195 . bfd_boolean _bfd_coff_force_symnames_in_strings;
1196 . unsigned int _bfd_coff_debug_string_prefix_length;
1198 . void (*_bfd_coff_swap_filehdr_in)
1199 . PARAMS ((bfd *, PTR, PTR));
1201 . void (*_bfd_coff_swap_aouthdr_in)
1202 . PARAMS ((bfd *, PTR, PTR));
1204 . void (*_bfd_coff_swap_scnhdr_in)
1205 . PARAMS ((bfd *, PTR, PTR));
1207 . void (*_bfd_coff_swap_reloc_in)
1208 . PARAMS ((bfd *abfd, PTR, PTR));
1210 . bfd_boolean (*_bfd_coff_bad_format_hook)
1211 . PARAMS ((bfd *, PTR));
1213 . bfd_boolean (*_bfd_coff_set_arch_mach_hook)
1214 . PARAMS ((bfd *, PTR));
1216 . PTR (*_bfd_coff_mkobject_hook)
1217 . PARAMS ((bfd *, PTR, PTR));
1219 . bfd_boolean (*_bfd_styp_to_sec_flags_hook)
1220 . PARAMS ((bfd *, PTR, const char *, asection *, flagword *));
1222 . void (*_bfd_set_alignment_hook)
1223 . PARAMS ((bfd *, asection *, PTR));
1225 . bfd_boolean (*_bfd_coff_slurp_symbol_table)
1228 . bfd_boolean (*_bfd_coff_symname_in_debug)
1229 . PARAMS ((bfd *, struct internal_syment *));
1231 . bfd_boolean (*_bfd_coff_pointerize_aux_hook)
1232 . PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
1233 . unsigned int, combined_entry_type *));
1235 . bfd_boolean (*_bfd_coff_print_aux)
1236 . PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1237 . combined_entry_type *, unsigned int));
1239 . void (*_bfd_coff_reloc16_extra_cases)
1240 . PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
1241 . bfd_byte *, unsigned int *, unsigned int *));
1243 . int (*_bfd_coff_reloc16_estimate)
1244 . PARAMS ((bfd *, asection *, arelent *, unsigned int,
1245 . struct bfd_link_info *));
1247 . enum coff_symbol_classification (*_bfd_coff_classify_symbol)
1248 . PARAMS ((bfd *, struct internal_syment *));
1250 . bfd_boolean (*_bfd_coff_compute_section_file_positions)
1253 . bfd_boolean (*_bfd_coff_start_final_link)
1254 . PARAMS ((bfd *, struct bfd_link_info *));
1256 . bfd_boolean (*_bfd_coff_relocate_section)
1257 . PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
1258 . struct internal_reloc *, struct internal_syment *, asection **));
1260 . reloc_howto_type *(*_bfd_coff_rtype_to_howto)
1261 . PARAMS ((bfd *, asection *, struct internal_reloc *,
1262 . struct coff_link_hash_entry *, struct internal_syment *,
1265 . bfd_boolean (*_bfd_coff_adjust_symndx)
1266 . PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
1267 . struct internal_reloc *, bfd_boolean *));
1269 . bfd_boolean (*_bfd_coff_link_add_one_symbol)
1270 . PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword,
1271 . asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
1272 . struct bfd_link_hash_entry **));
1274 . bfd_boolean (*_bfd_coff_link_output_has_begun)
1275 . PARAMS ((bfd *, struct coff_final_link_info *));
1277 . bfd_boolean (*_bfd_coff_final_link_postscript)
1278 . PARAMS ((bfd *, struct coff_final_link_info *));
1280 .} bfd_coff_backend_data;
1282 .#define coff_backend_info(abfd) \
1283 . ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1285 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1286 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1288 .#define bfd_coff_swap_sym_in(a,e,i) \
1289 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1291 .#define bfd_coff_swap_lineno_in(a,e,i) \
1292 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1294 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1295 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1297 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1298 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1300 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1301 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1303 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1304 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1306 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1307 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1309 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1310 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1312 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1313 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1315 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1316 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1317 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1318 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1319 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1320 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
1321 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1322 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1323 .#define bfd_coff_long_filenames(abfd) \
1324 . (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1325 .#define bfd_coff_long_section_names(abfd) \
1326 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1327 .#define bfd_coff_default_section_alignment_power(abfd) \
1328 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1329 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1330 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1332 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1333 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1335 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1336 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1338 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1339 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1341 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1342 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1344 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1345 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1346 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1347 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
1348 . (abfd, filehdr, aouthdr))
1350 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
1351 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1352 . (abfd, scnhdr, name, section, flags_ptr))
1354 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1355 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1357 .#define bfd_coff_slurp_symbol_table(abfd)\
1358 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1360 .#define bfd_coff_symname_in_debug(abfd, sym)\
1361 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1363 .#define bfd_coff_force_symnames_in_strings(abfd)\
1364 . (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
1366 .#define bfd_coff_debug_string_prefix_length(abfd)\
1367 . (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
1369 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1370 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1371 . (abfd, file, base, symbol, aux, indaux))
1373 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
1374 . reloc, data, src_ptr, dst_ptr)\
1375 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1376 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1378 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1379 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1380 . (abfd, section, reloc, shrink, link_info))
1382 .#define bfd_coff_classify_symbol(abfd, sym)\
1383 . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1386 .#define bfd_coff_compute_section_file_positions(abfd)\
1387 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1390 .#define bfd_coff_start_final_link(obfd, info)\
1391 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1393 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1394 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1395 . (obfd, info, ibfd, o, con, rel, isyms, secs))
1396 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1397 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1398 . (abfd, sec, rel, h, sym, addendp))
1399 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1400 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1401 . (obfd, info, ibfd, sec, rel, adjustedp))
1402 .#define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
1403 . value, string, cp, coll, hashp)\
1404 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1405 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1407 .#define bfd_coff_link_output_has_begun(a,p) \
1408 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
1409 .#define bfd_coff_final_link_postscript(a,p) \
1410 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
1414 /* See whether the magic number matches. */
1417 coff_bad_format_hook (abfd, filehdr)
1418 bfd * abfd ATTRIBUTE_UNUSED;
1421 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1423 if (BADMAG (*internal_f))
1426 /* If the optional header is NULL or not the correct size then
1427 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1428 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1429 optional header is of a different size.
1431 But the mips keeps extra stuff in it's opthdr, so dont check
1434 #if defined(M88) || defined(I960)
1435 if (internal_f->f_opthdr != 0 && bfd_coff_aoutsz (abfd) != internal_f->f_opthdr)
1442 /* Check whether this section uses an alignment other than the
1446 coff_set_custom_section_alignment (abfd, section, alignment_table, table_size)
1447 bfd *abfd ATTRIBUTE_UNUSED;
1449 const struct coff_section_alignment_entry *alignment_table;
1450 const unsigned int table_size;
1452 const unsigned int default_alignment = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1455 for (i = 0; i < table_size; ++i)
1457 const char *secname = bfd_get_section_name (abfd, section);
1459 if (alignment_table[i].comparison_length == (unsigned int) -1
1460 ? strcmp (alignment_table[i].name, secname) == 0
1461 : strncmp (alignment_table[i].name, secname,
1462 alignment_table[i].comparison_length) == 0)
1465 if (i >= table_size)
1468 if (alignment_table[i].default_alignment_min != COFF_ALIGNMENT_FIELD_EMPTY
1469 && default_alignment < alignment_table[i].default_alignment_min)
1472 if (alignment_table[i].default_alignment_max != COFF_ALIGNMENT_FIELD_EMPTY
1473 #if COFF_DEFAULT_SECTION_ALIGNMENT_POWER != 0
1474 && default_alignment > alignment_table[i].default_alignment_max
1479 section->alignment_power = alignment_table[i].alignment_power;
1482 /* Custom section alignment records. */
1484 static const struct coff_section_alignment_entry
1485 coff_section_alignment_table[] =
1487 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1488 COFF_SECTION_ALIGNMENT_ENTRIES,
1490 /* There must not be any gaps between .stabstr sections. */
1491 { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1492 1, COFF_ALIGNMENT_FIELD_EMPTY, 0 },
1493 /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */
1494 { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1495 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1496 /* Similarly for the .ctors and .dtors sections. */
1497 { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1498 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1499 { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1500 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }
1503 static const unsigned int coff_section_alignment_table_size =
1504 sizeof coff_section_alignment_table / sizeof coff_section_alignment_table[0];
1506 /* Initialize a section structure with information peculiar to this
1507 particular implementation of COFF. */
1510 coff_new_section_hook (abfd, section)
1514 combined_entry_type *native;
1517 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1520 if (bfd_xcoff_text_align_power (abfd) != 0
1521 && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
1522 section->alignment_power = bfd_xcoff_text_align_power (abfd);
1523 if (bfd_xcoff_data_align_power (abfd) != 0
1524 && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
1525 section->alignment_power = bfd_xcoff_data_align_power (abfd);
1528 /* Allocate aux records for section symbols, to store size and
1531 @@ The 10 is a guess at a plausible maximum number of aux entries
1532 (but shouldn't be a constant). */
1533 amt = sizeof (combined_entry_type) * 10;
1534 native = (combined_entry_type *) bfd_zalloc (abfd, amt);
1538 /* We don't need to set up n_name, n_value, or n_scnum in the native
1539 symbol information, since they'll be overriden by the BFD symbol
1540 anyhow. However, we do need to set the type and storage class,
1541 in case this symbol winds up getting written out. The value 0
1542 for n_numaux is already correct. */
1544 native->u.syment.n_type = T_NULL;
1545 native->u.syment.n_sclass = C_STAT;
1547 coffsymbol (section->symbol)->native = native;
1549 coff_set_custom_section_alignment (abfd, section,
1550 coff_section_alignment_table,
1551 coff_section_alignment_table_size);
1556 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1558 /* Set the alignment of a BFD section. */
1560 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1563 coff_set_alignment_hook (abfd, section, scnhdr)
1564 bfd * abfd ATTRIBUTE_UNUSED;
1568 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1572 /* Extract ALIGN from 2**ALIGN stored in section header. */
1573 for (i = 0; i < 32; i++)
1574 if ((1 << i) >= hdr->s_align)
1578 /* TI tools puts the alignment power in bits 8-11. */
1579 i = (hdr->s_flags >> 8) & 0xF ;
1581 #ifdef COFF_DECODE_ALIGNMENT
1582 i = COFF_DECODE_ALIGNMENT(hdr->s_flags);
1584 section->alignment_power = i;
1586 #ifdef coff_set_section_load_page
1587 coff_set_section_load_page (section, hdr->s_page);
1591 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1594 /* A couple of macros to help setting the alignment power field. */
1595 #define ALIGN_SET(field,x,y) \
1596 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
1598 section->alignment_power = y;\
1601 #define ELIFALIGN_SET(field,x,y) \
1602 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
1604 section->alignment_power = y;\
1607 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1610 coff_set_alignment_hook (abfd, section, scnhdr)
1611 bfd * abfd ATTRIBUTE_UNUSED;
1615 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1618 ALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_64BYTES, 6)
1619 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_32BYTES, 5)
1620 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_16BYTES, 4)
1621 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_8BYTES, 3)
1622 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_4BYTES, 2)
1623 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_2BYTES, 1)
1624 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_1BYTES, 0)
1626 /* In a PE image file, the s_paddr field holds the virtual size of a
1627 section, while the s_size field holds the raw size. We also keep
1628 the original section flag value, since not every bit can be
1629 mapped onto a generic BFD section bit. */
1630 if (coff_section_data (abfd, section) == NULL)
1632 amt = sizeof (struct coff_section_tdata);
1633 section->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
1634 if (section->used_by_bfd == NULL)
1636 /* FIXME: Return error. */
1640 if (pei_section_data (abfd, section) == NULL)
1642 amt = sizeof (struct pei_section_tdata);
1643 coff_section_data (abfd, section)->tdata = (PTR) bfd_zalloc (abfd, amt);
1644 if (coff_section_data (abfd, section)->tdata == NULL)
1646 /* FIXME: Return error. */
1650 pei_section_data (abfd, section)->virt_size = hdr->s_paddr;
1651 pei_section_data (abfd, section)->pe_flags = hdr->s_flags;
1653 section->lma = hdr->s_vaddr;
1655 /* Check for extended relocs. */
1656 if (hdr->s_flags & IMAGE_SCN_LNK_NRELOC_OVFL)
1658 struct external_reloc dst;
1659 struct internal_reloc n;
1660 file_ptr oldpos = bfd_tell (abfd);
1661 bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0);
1662 if (bfd_bread ((PTR) &dst, (bfd_size_type) bfd_coff_relsz (abfd), abfd)
1663 != bfd_coff_relsz (abfd))
1666 coff_swap_reloc_in (abfd, &dst, &n);
1667 bfd_seek (abfd, oldpos, 0);
1668 section->reloc_count = hdr->s_nreloc = n.r_vaddr;
1672 #undef ELIFALIGN_SET
1674 #else /* ! COFF_WITH_PE */
1677 /* We grossly abuse this function to handle XCOFF overflow headers.
1678 When we see one, we correct the reloc and line number counts in the
1679 real header, and remove the section we just created. */
1681 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1684 coff_set_alignment_hook (abfd, section, scnhdr)
1689 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1693 if ((hdr->s_flags & STYP_OVRFLO) == 0)
1696 real_sec = coff_section_from_bfd_index (abfd, (int) hdr->s_nreloc);
1697 if (real_sec == NULL)
1700 real_sec->reloc_count = hdr->s_paddr;
1701 real_sec->lineno_count = hdr->s_vaddr;
1703 for (ps = &abfd->sections; *ps != NULL; ps = &(*ps)->next)
1707 bfd_section_list_remove (abfd, ps);
1708 --abfd->section_count;
1714 #else /* ! RS6000COFF_C */
1716 #define coff_set_alignment_hook \
1717 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1719 #endif /* ! RS6000COFF_C */
1720 #endif /* ! COFF_WITH_PE */
1721 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1723 #ifndef coff_mkobject
1725 static bfd_boolean coff_mkobject PARAMS ((bfd *));
1728 coff_mkobject (abfd)
1731 coff_data_type *coff;
1732 bfd_size_type amt = sizeof (coff_data_type);
1734 abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, amt);
1735 if (abfd->tdata.coff_obj_data == 0)
1737 coff = coff_data (abfd);
1738 coff->symbols = (coff_symbol_type *) NULL;
1739 coff->conversion_table = (unsigned int *) NULL;
1740 coff->raw_syments = (struct coff_ptr_struct *) NULL;
1741 coff->relocbase = 0;
1742 coff->local_toc_sym_map = 0;
1744 /* make_abs_section(abfd);*/
1750 /* Create the COFF backend specific information. */
1752 #ifndef coff_mkobject_hook
1754 coff_mkobject_hook (abfd, filehdr, aouthdr)
1757 PTR aouthdr ATTRIBUTE_UNUSED;
1759 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1760 coff_data_type *coff;
1762 if (! coff_mkobject (abfd))
1765 coff = coff_data (abfd);
1767 coff->sym_filepos = internal_f->f_symptr;
1769 /* These members communicate important constants about the symbol
1770 table to GDB's symbol-reading code. These `constants'
1771 unfortunately vary among coff implementations... */
1772 coff->local_n_btmask = N_BTMASK;
1773 coff->local_n_btshft = N_BTSHFT;
1774 coff->local_n_tmask = N_TMASK;
1775 coff->local_n_tshift = N_TSHIFT;
1776 coff->local_symesz = bfd_coff_symesz (abfd);
1777 coff->local_auxesz = bfd_coff_auxesz (abfd);
1778 coff->local_linesz = bfd_coff_linesz (abfd);
1780 coff->timestamp = internal_f->f_timdat;
1782 obj_raw_syment_count (abfd) =
1783 obj_conv_table_size (abfd) =
1784 internal_f->f_nsyms;
1787 if ((internal_f->f_flags & F_SHROBJ) != 0)
1788 abfd->flags |= DYNAMIC;
1789 if (aouthdr != NULL && internal_f->f_opthdr >= bfd_coff_aoutsz (abfd))
1791 struct internal_aouthdr *internal_a =
1792 (struct internal_aouthdr *) aouthdr;
1793 struct xcoff_tdata *xcoff;
1795 xcoff = xcoff_data (abfd);
1796 # ifdef U803XTOCMAGIC
1797 xcoff->xcoff64 = internal_f->f_magic == U803XTOCMAGIC;
1801 xcoff->full_aouthdr = TRUE;
1802 xcoff->toc = internal_a->o_toc;
1803 xcoff->sntoc = internal_a->o_sntoc;
1804 xcoff->snentry = internal_a->o_snentry;
1805 bfd_xcoff_text_align_power (abfd) = internal_a->o_algntext;
1806 bfd_xcoff_data_align_power (abfd) = internal_a->o_algndata;
1807 xcoff->modtype = internal_a->o_modtype;
1808 xcoff->cputype = internal_a->o_cputype;
1809 xcoff->maxdata = internal_a->o_maxdata;
1810 xcoff->maxstack = internal_a->o_maxstack;
1815 /* Set the flags field from the COFF header read in. */
1816 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
1821 /* FIXME: I'm not sure this is ever executed, since peicode.h
1822 defines coff_mkobject_hook. */
1823 if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
1824 abfd->flags |= HAS_DEBUG;
1831 /* Determine the machine architecture and type. FIXME: This is target
1832 dependent because the magic numbers are defined in the target
1833 dependent header files. But there is no particular need for this.
1834 If the magic numbers were moved to a separate file, this function
1835 would be target independent and would also be much more successful
1836 at linking together COFF files for different architectures. */
1839 coff_set_arch_mach_hook (abfd, filehdr)
1843 unsigned long machine;
1844 enum bfd_architecture arch;
1845 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1847 /* Zero selects the default machine for an arch. */
1849 switch (internal_f->f_magic)
1851 #ifdef OR32_MAGIC_BIG
1852 case OR32_MAGIC_BIG:
1853 case OR32_MAGIC_LITTLE:
1854 arch = bfd_arch_or32;
1859 arch = bfd_arch_powerpc;
1865 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */
1866 case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */
1867 arch = bfd_arch_i386;
1872 arch = bfd_arch_ia64;
1875 #ifdef A29K_MAGIC_BIG
1876 case A29K_MAGIC_BIG:
1877 case A29K_MAGIC_LITTLE:
1878 arch = bfd_arch_a29k;
1885 arch = bfd_arch_arm;
1886 machine = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
1887 if (machine == bfd_mach_arm_unknown)
1889 switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK)
1891 case F_ARM_2: machine = bfd_mach_arm_2; break;
1892 case F_ARM_2a: machine = bfd_mach_arm_2a; break;
1893 case F_ARM_3: machine = bfd_mach_arm_3; break;
1895 case F_ARM_3M: machine = bfd_mach_arm_3M; break;
1896 case F_ARM_4: machine = bfd_mach_arm_4; break;
1897 case F_ARM_4T: machine = bfd_mach_arm_4T; break;
1898 /* The COFF header does not have enough bits available
1899 to cover all the different ARM architectures. So
1900 we interpret F_ARM_5, the highest flag value to mean
1901 "the highest ARM architecture known to BFD" which is
1902 currently the XScale. */
1903 case F_ARM_5: machine = bfd_mach_arm_XScale; break;
1911 #ifdef MC68KBCSMAGIC
1914 #ifdef APOLLOM68KMAGIC
1915 case APOLLOM68KMAGIC:
1917 #ifdef LYNXCOFFMAGIC
1920 arch = bfd_arch_m68k;
1921 machine = bfd_mach_m68020;
1928 arch = bfd_arch_m88k;
1934 arch = bfd_arch_z8k;
1935 switch (internal_f->f_flags & F_MACHMASK)
1938 machine = bfd_mach_z8001;
1941 machine = bfd_mach_z8002;
1950 arch = bfd_arch_i860;
1957 arch = bfd_arch_i960;
1958 switch (F_I960TYPE & internal_f->f_flags)
1962 machine = bfd_mach_i960_core;
1965 machine = bfd_mach_i960_kb_sb;
1968 machine = bfd_mach_i960_mc;
1971 machine = bfd_mach_i960_xa;
1974 machine = bfd_mach_i960_ca;
1977 machine = bfd_mach_i960_ka_sa;
1980 machine = bfd_mach_i960_jx;
1983 machine = bfd_mach_i960_hx;
2002 if (xcoff_data (abfd)->cputype != -1)
2003 cputype = xcoff_data (abfd)->cputype & 0xff;
2006 /* We did not get a value from the a.out header. If the
2007 file has not been stripped, we may be able to get the
2008 architecture information from the first symbol, if it
2009 is a .file symbol. */
2010 if (obj_raw_syment_count (abfd) == 0)
2015 struct internal_syment sym;
2016 bfd_size_type amt = bfd_coff_symesz (abfd);
2018 buf = (bfd_byte *) bfd_malloc (amt);
2019 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
2020 || bfd_bread (buf, amt, abfd) != amt)
2025 bfd_coff_swap_sym_in (abfd, (PTR) buf, (PTR) &sym);
2026 if (sym.n_sclass == C_FILE)
2027 cputype = sym.n_type & 0xff;
2034 /* FIXME: We don't handle all cases here. */
2039 arch = bfd_xcoff_architecture (abfd);
2040 machine = bfd_xcoff_machine (abfd);
2044 arch = bfd_arch_powerpc;
2045 machine = bfd_mach_ppc_601;
2047 case 2: /* 64 bit PowerPC */
2048 arch = bfd_arch_powerpc;
2049 machine = bfd_mach_ppc_620;
2052 arch = bfd_arch_powerpc;
2053 machine = bfd_mach_ppc;
2056 arch = bfd_arch_rs6000;
2057 machine = bfd_mach_rs6k;
2066 arch = bfd_arch_we32k;
2072 arch = bfd_arch_h8300;
2073 machine = bfd_mach_h8300;
2074 /* !! FIXME this probably isn't the right place for this */
2075 abfd->flags |= BFD_IS_RELAXABLE;
2081 arch = bfd_arch_h8300;
2082 machine = bfd_mach_h8300h;
2083 /* !! FIXME this probably isn't the right place for this */
2084 abfd->flags |= BFD_IS_RELAXABLE;
2090 arch = bfd_arch_h8300;
2091 machine = bfd_mach_h8300s;
2092 /* !! FIXME this probably isn't the right place for this */
2093 abfd->flags |= BFD_IS_RELAXABLE;
2097 #ifdef SH_ARCH_MAGIC_BIG
2098 case SH_ARCH_MAGIC_BIG:
2099 case SH_ARCH_MAGIC_LITTLE:
2101 case SH_ARCH_MAGIC_WINCE:
2107 #ifdef MIPS_ARCH_MAGIC_WINCE
2108 case MIPS_ARCH_MAGIC_WINCE:
2109 arch = bfd_arch_mips;
2115 arch = bfd_arch_h8500;
2121 #ifdef LYNXCOFFMAGIC
2124 arch = bfd_arch_sparc;
2130 arch = bfd_arch_tic30;
2135 #ifdef TICOFF_TARGET_ARCH
2136 /* This TI COFF section should be used by all new TI COFF v0 targets. */
2138 arch = TICOFF_TARGET_ARCH;
2139 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2145 /* This TI COFF section should be used by all new TI COFF v1/2 targets. */
2146 /* TI COFF1 and COFF2 use the target_id field to specify which arch. */
2149 switch (internal_f->f_target_id)
2153 arch = TICOFF_TARGET_ARCH;
2154 machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2158 arch = bfd_arch_obscure;
2159 (*_bfd_error_handler)
2160 (_("Unrecognized TI COFF target id '0x%x'"),
2161 internal_f->f_target_id);
2167 #ifdef TIC80_ARCH_MAGIC
2168 case TIC80_ARCH_MAGIC:
2169 arch = bfd_arch_tic80;
2175 arch = bfd_arch_mcore;
2181 arch = bfd_arch_w65;
2185 default: /* Unreadable input file type. */
2186 arch = bfd_arch_obscure;
2190 bfd_default_set_arch_mach (abfd, arch, machine);
2194 #ifdef SYMNAME_IN_DEBUG
2196 static bfd_boolean symname_in_debug_hook
2197 PARAMS ((bfd *, struct internal_syment *));
2200 symname_in_debug_hook (abfd, sym)
2201 bfd * abfd ATTRIBUTE_UNUSED;
2202 struct internal_syment *sym;
2204 return SYMNAME_IN_DEBUG (sym) != 0;
2209 #define symname_in_debug_hook \
2210 (bfd_boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2217 #define FORCE_SYMNAMES_IN_STRINGS
2220 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2222 static bfd_boolean coff_pointerize_aux_hook
2223 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2224 unsigned int, combined_entry_type *));
2227 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2228 bfd *abfd ATTRIBUTE_UNUSED;
2229 combined_entry_type *table_base;
2230 combined_entry_type *symbol;
2231 unsigned int indaux;
2232 combined_entry_type *aux;
2234 int class = symbol->u.syment.n_sclass;
2236 if ((class == C_EXT || class == C_HIDEXT)
2237 && indaux + 1 == symbol->u.syment.n_numaux)
2239 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2241 aux->u.auxent.x_csect.x_scnlen.p =
2242 table_base + aux->u.auxent.x_csect.x_scnlen.l;
2243 aux->fix_scnlen = 1;
2246 /* Return TRUE to indicate that the caller should not do any
2247 further work on this auxent. */
2251 /* Return FALSE to indicate that this auxent should be handled by
2259 /* We don't want to pointerize bal entries. */
2261 static bfd_boolean coff_pointerize_aux_hook
2262 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2263 unsigned int, combined_entry_type *));
2266 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2267 bfd *abfd ATTRIBUTE_UNUSED;
2268 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2269 combined_entry_type *symbol;
2270 unsigned int indaux;
2271 combined_entry_type *aux ATTRIBUTE_UNUSED;
2273 /* Return TRUE if we don't want to pointerize this aux entry, which
2274 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2276 && (symbol->u.syment.n_sclass == C_LEAFPROC
2277 || symbol->u.syment.n_sclass == C_LEAFSTAT
2278 || symbol->u.syment.n_sclass == C_LEAFEXT));
2283 #define coff_pointerize_aux_hook 0
2286 #endif /* ! RS6000COFF_C */
2288 /* Print an aux entry. This returns TRUE if it has printed it. */
2290 static bfd_boolean coff_print_aux
2291 PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
2292 combined_entry_type *, unsigned int));
2295 coff_print_aux (abfd, file, table_base, symbol, aux, indaux)
2296 bfd *abfd ATTRIBUTE_UNUSED;
2297 FILE *file ATTRIBUTE_UNUSED;
2298 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2299 combined_entry_type *symbol ATTRIBUTE_UNUSED;
2300 combined_entry_type *aux ATTRIBUTE_UNUSED;
2301 unsigned int indaux ATTRIBUTE_UNUSED;
2304 if ((symbol->u.syment.n_sclass == C_EXT
2305 || symbol->u.syment.n_sclass == C_HIDEXT)
2306 && indaux + 1 == symbol->u.syment.n_numaux)
2308 /* This is a csect entry. */
2309 fprintf (file, "AUX ");
2310 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
2312 BFD_ASSERT (! aux->fix_scnlen);
2314 fprintf (file, "val %5lld", aux->u.auxent.x_csect.x_scnlen.l);
2316 fprintf (file, "val %5ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2321 fprintf (file, "indx ");
2322 if (! aux->fix_scnlen)
2324 fprintf (file, "%4lld", aux->u.auxent.x_csect.x_scnlen.l);
2326 fprintf (file, "%4ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2329 fprintf (file, "%4ld",
2330 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
2333 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2334 aux->u.auxent.x_csect.x_parmhash,
2335 (unsigned int) aux->u.auxent.x_csect.x_snhash,
2336 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
2337 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
2338 (unsigned int) aux->u.auxent.x_csect.x_smclas,
2339 aux->u.auxent.x_csect.x_stab,
2340 (unsigned int) aux->u.auxent.x_csect.x_snstab);
2345 /* Return FALSE to indicate that no special action was taken. */
2353 To write relocations, the back end steps though the
2354 canonical relocation table and create an
2355 @code{internal_reloc}. The symbol index to use is removed from
2356 the @code{offset} field in the symbol table supplied. The
2357 address comes directly from the sum of the section base
2358 address and the relocation offset; the type is dug directly
2359 from the howto field. Then the @code{internal_reloc} is
2360 swapped into the shape of an @code{external_reloc} and written
2367 static int compare_arelent_ptr PARAMS ((const PTR, const PTR));
2369 /* AUX's ld wants relocations to be sorted. */
2371 compare_arelent_ptr (x, y)
2375 const arelent **a = (const arelent **) x;
2376 const arelent **b = (const arelent **) y;
2377 bfd_size_type aadr = (*a)->address;
2378 bfd_size_type badr = (*b)->address;
2380 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
2383 #endif /* TARG_AUX */
2386 coff_write_relocs (abfd, first_undef)
2392 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
2395 struct external_reloc dst;
2402 /* Sort relocations before we write them out. */
2405 amt = s->reloc_count;
2406 amt *= sizeof (arelent *);
2407 p = (arelent **) bfd_malloc (amt);
2408 if (p == NULL && s->reloc_count > 0)
2410 memcpy (p, s->orelocation, (size_t) amt);
2411 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
2415 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
2419 if (obj_pe (abfd) && s->reloc_count >= 0xffff)
2421 /* Encode real count here as first reloc. */
2422 struct internal_reloc n;
2424 memset ((PTR) & n, 0, sizeof (n));
2425 /* Add one to count *this* reloc (grr). */
2426 n.r_vaddr = s->reloc_count + 1;
2427 coff_swap_reloc_out (abfd, &n, &dst);
2428 if (bfd_bwrite ((PTR) & dst, (bfd_size_type) bfd_coff_relsz (abfd),
2429 abfd) != bfd_coff_relsz (abfd))
2434 for (i = 0; i < s->reloc_count; i++)
2436 struct internal_reloc n;
2439 memset ((PTR) & n, 0, sizeof (n));
2441 /* Now we've renumbered the symbols we know where the
2442 undefined symbols live in the table. Check the reloc
2443 entries for symbols who's output bfd isn't the right one.
2444 This is because the symbol was undefined (which means
2445 that all the pointers are never made to point to the same
2446 place). This is a bad thing,'cause the symbols attached
2447 to the output bfd are indexed, so that the relocation
2448 entries know which symbol index they point to. So we
2449 have to look up the output symbol here. */
2451 if (q->sym_ptr_ptr[0]->the_bfd != abfd)
2454 const char *sname = q->sym_ptr_ptr[0]->name;
2455 asymbol **outsyms = abfd->outsymbols;
2457 for (j = first_undef; outsyms[j]; j++)
2459 const char *intable = outsyms[j]->name;
2461 if (strcmp (intable, sname) == 0) {
2462 /* Got a hit, so repoint the reloc. */
2463 q->sym_ptr_ptr = outsyms + j;
2469 n.r_vaddr = q->address + s->vma;
2472 /* The 29k const/consth reloc pair is a real kludge. The consth
2473 part doesn't have a symbol; it has an offset. So rebuilt
2475 if (q->howto->type == R_IHCONST)
2476 n.r_symndx = q->addend;
2481 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2482 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q,s))
2484 if ((*q->sym_ptr_ptr)->section == bfd_abs_section_ptr
2485 && ((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0)
2487 /* This is a relocation relative to the absolute symbol. */
2491 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
2492 /* Take notice if the symbol reloc points to a symbol
2493 we don't have in our symbol table. What should we
2495 if (n.r_symndx > obj_conv_table_size (abfd))
2500 #ifdef SWAP_OUT_RELOC_OFFSET
2501 n.r_offset = q->addend;
2505 /* Work out reloc type from what is required. */
2506 SELECT_RELOC (n, q->howto);
2508 n.r_type = q->howto->type;
2510 coff_swap_reloc_out (abfd, &n, &dst);
2512 if (bfd_bwrite ((PTR) & dst, (bfd_size_type) bfd_coff_relsz (abfd),
2513 abfd) != bfd_coff_relsz (abfd))
2526 /* Set flags and magic number of a coff file from architecture and machine
2527 type. Result is TRUE if we can represent the arch&type, FALSE if not. */
2530 coff_set_flags (abfd, magicp, flagsp)
2532 unsigned int *magicp ATTRIBUTE_UNUSED;
2533 unsigned short *flagsp ATTRIBUTE_UNUSED;
2535 switch (bfd_get_arch (abfd))
2540 switch (bfd_get_mach (abfd))
2542 case bfd_mach_z8001:
2545 case bfd_mach_z8002:
2559 *magicp = I960ROMAGIC;
2561 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2562 I960RWMAGIC); FIXME???
2564 switch (bfd_get_mach (abfd))
2566 case bfd_mach_i960_core:
2569 case bfd_mach_i960_kb_sb:
2572 case bfd_mach_i960_mc:
2575 case bfd_mach_i960_xa:
2578 case bfd_mach_i960_ca:
2581 case bfd_mach_i960_ka_sa:
2584 case bfd_mach_i960_jx:
2587 case bfd_mach_i960_hx:
2600 case bfd_arch_tic30:
2601 *magicp = TIC30MAGIC;
2605 #ifdef TICOFF_DEFAULT_MAGIC
2606 case TICOFF_TARGET_ARCH:
2607 /* If there's no indication of which version we want, use the default. */
2609 *magicp = TICOFF_DEFAULT_MAGIC;
2612 /* We may want to output in a different COFF version. */
2613 switch (abfd->xvec->name[4])
2616 *magicp = TICOFF0MAGIC;
2619 *magicp = TICOFF1MAGIC;
2622 *magicp = TICOFF2MAGIC;
2628 TICOFF_TARGET_MACHINE_SET (flagsp, bfd_get_mach (abfd));
2632 #ifdef TIC80_ARCH_MAGIC
2633 case bfd_arch_tic80:
2634 *magicp = TIC80_ARCH_MAGIC;
2640 * magicp = ARMPEMAGIC;
2642 * magicp = ARMMAGIC;
2645 if (APCS_SET (abfd))
2647 if (APCS_26_FLAG (abfd))
2648 * flagsp |= F_APCS26;
2650 if (APCS_FLOAT_FLAG (abfd))
2651 * flagsp |= F_APCS_FLOAT;
2653 if (PIC_FLAG (abfd))
2656 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2657 * flagsp |= F_INTERWORK;
2658 switch (bfd_get_mach (abfd))
2660 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2661 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2662 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2663 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2664 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2665 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2666 case bfd_mach_arm_5: * flagsp |= F_ARM_5; break;
2667 /* FIXME: we do not have F_ARM vaues greater than F_ARM_5.
2668 See also the comment in coff_set_arch_mach_hook(). */
2669 case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break;
2670 case bfd_mach_arm_5TE: * flagsp |= F_ARM_5; break;
2671 case bfd_mach_arm_XScale: * flagsp |= F_ARM_5; break;
2676 case bfd_arch_powerpc:
2683 *magicp = I386MAGIC;
2685 /* Just overwrite the usual value if we're doing Lynx. */
2686 *magicp = LYNXCOFFMAGIC;
2693 *magicp = I860MAGIC;
2699 *magicp = IA64MAGIC;
2705 #ifdef APOLLOM68KMAGIC
2706 *magicp = APOLLO_COFF_VERSION_NUMBER;
2708 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2709 #ifdef NAMES_HAVE_UNDERSCORE
2710 *magicp = MC68KBCSMAGIC;
2712 *magicp = MC68MAGIC;
2716 /* Just overwrite the usual value if we're doing Lynx. */
2717 *magicp = LYNXCOFFMAGIC;
2725 *magicp = MC88OMAGIC;
2730 case bfd_arch_h8300:
2731 switch (bfd_get_mach (abfd))
2733 case bfd_mach_h8300:
2734 *magicp = H8300MAGIC;
2736 case bfd_mach_h8300h:
2737 *magicp = H8300HMAGIC;
2739 case bfd_mach_h8300s:
2740 *magicp = H8300SMAGIC;
2746 #ifdef SH_ARCH_MAGIC_BIG
2748 #ifdef COFF_IMAGE_WITH_PE
2749 *magicp = SH_ARCH_MAGIC_WINCE;
2751 if (bfd_big_endian (abfd))
2752 *magicp = SH_ARCH_MAGIC_BIG;
2754 *magicp = SH_ARCH_MAGIC_LITTLE;
2760 #ifdef MIPS_ARCH_MAGIC_WINCE
2762 *magicp = MIPS_ARCH_MAGIC_WINCE;
2768 case bfd_arch_sparc:
2769 *magicp = SPARCMAGIC;
2771 /* Just overwrite the usual value if we're doing Lynx. */
2772 *magicp = LYNXCOFFMAGIC;
2779 case bfd_arch_h8500:
2780 *magicp = H8500MAGIC;
2784 #ifdef A29K_MAGIC_BIG
2786 if (bfd_big_endian (abfd))
2787 *magicp = A29K_MAGIC_BIG;
2789 *magicp = A29K_MAGIC_LITTLE;
2795 case bfd_arch_we32k:
2796 *magicp = WE32KMAGIC;
2802 case bfd_arch_rs6000:
2804 case bfd_arch_powerpc:
2806 BFD_ASSERT (bfd_get_flavour (abfd) == bfd_target_xcoff_flavour);
2807 *magicp = bfd_xcoff_magic_number (abfd);
2813 case bfd_arch_mcore:
2814 * magicp = MCOREMAGIC;
2824 #ifdef OR32_MAGIC_BIG
2826 if (bfd_big_endian (abfd))
2827 * magicp = OR32_MAGIC_BIG;
2829 * magicp = OR32_MAGIC_LITTLE;
2833 default: /* Unknown architecture. */
2834 /* Fall through to "return FALSE" below, to avoid
2835 "statement never reached" errors on the one below. */
2843 coff_set_arch_mach (abfd, arch, machine)
2845 enum bfd_architecture arch;
2846 unsigned long machine;
2849 unsigned short dummy2;
2851 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2854 if (arch != bfd_arch_unknown
2855 && ! coff_set_flags (abfd, &dummy1, &dummy2))
2856 return FALSE; /* We can't represent this type */
2858 return TRUE; /* We're easy ... */
2861 #ifdef COFF_IMAGE_WITH_PE
2863 /* This is used to sort sections by VMA, as required by PE image
2866 static int sort_by_secaddr PARAMS ((const PTR, const PTR));
2869 sort_by_secaddr (arg1, arg2)
2873 const asection *a = *(const asection **) arg1;
2874 const asection *b = *(const asection **) arg2;
2876 if (a->vma < b->vma)
2878 else if (a->vma > b->vma)
2884 #endif /* COFF_IMAGE_WITH_PE */
2886 /* Calculate the file position for each section. */
2889 #define ALIGN_SECTIONS_IN_FILE
2891 #if defined(TIC80COFF) || defined(TICOFF)
2892 #undef ALIGN_SECTIONS_IN_FILE
2896 coff_compute_section_file_positions (abfd)
2900 asection *previous = (asection *) NULL;
2901 file_ptr sofar = bfd_coff_filhsz (abfd);
2902 bfd_boolean align_adjust;
2903 #ifdef ALIGN_SECTIONS_IN_FILE
2908 /* On XCOFF, if we have symbols, set up the .debug section. */
2909 if (bfd_get_symcount (abfd) > 0)
2912 bfd_size_type i, symcount;
2916 symcount = bfd_get_symcount (abfd);
2917 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
2919 coff_symbol_type *cf;
2921 cf = coff_symbol_from (abfd, *symp);
2923 && cf->native != NULL
2924 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
2928 len = strlen (bfd_asymbol_name (*symp));
2929 if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd))
2930 sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd);
2937 dsec = bfd_make_section_old_way (abfd, ".debug");
2940 dsec->_raw_size = sz;
2941 dsec->flags |= SEC_HAS_CONTENTS;
2946 #ifdef COFF_IMAGE_WITH_PE
2948 if (coff_data (abfd)->link_info)
2950 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
2953 page_size = PE_DEF_FILE_ALIGNMENT;
2955 #ifdef COFF_PAGE_SIZE
2956 int page_size = COFF_PAGE_SIZE;
2960 if (bfd_get_start_address (abfd))
2962 /* A start address may have been added to the original file. In this
2963 case it will need an optional header to record it. */
2964 abfd->flags |= EXEC_P;
2967 if (abfd->flags & EXEC_P)
2968 sofar += bfd_coff_aoutsz (abfd);
2970 else if (xcoff_data (abfd)->full_aouthdr)
2971 sofar += bfd_coff_aoutsz (abfd);
2973 sofar += SMALL_AOUTSZ;
2976 sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
2979 /* XCOFF handles overflows in the reloc and line number count fields
2980 by allocating a new section header to hold the correct counts. */
2981 for (current = abfd->sections; current != NULL; current = current->next)
2982 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2983 sofar += bfd_coff_scnhsz (abfd);
2986 #ifdef COFF_IMAGE_WITH_PE
2988 /* PE requires the sections to be in memory order when listed in
2989 the section headers. It also does not like empty loadable
2990 sections. The sections apparently do not have to be in the
2991 right order in the image file itself, but we do need to get the
2992 target_index values right. */
2995 asection **section_list;
3001 for (current = abfd->sections; current != NULL; current = current->next)
3004 /* We allocate an extra cell to simplify the final loop. */
3005 amt = sizeof (struct asection *) * (count + 1);
3006 section_list = bfd_malloc (amt);
3007 if (section_list == NULL)
3011 for (current = abfd->sections; current != NULL; current = current->next)
3013 section_list[i] = current;
3016 section_list[i] = NULL;
3018 qsort (section_list, count, sizeof (asection *), sort_by_secaddr);
3020 /* Rethread the linked list into sorted order; at the same time,
3021 assign target_index values. */
3023 abfd->sections = section_list[0];
3024 for (i = 0; i < count; i++)
3026 current = section_list[i];
3027 current->next = section_list[i + 1];
3029 /* Later, if the section has zero size, we'll be throwing it
3030 away, so we don't want to number it now. Note that having
3031 a zero size and having real contents are different
3032 concepts: .bss has no contents, but (usually) non-zero
3034 if (current->_raw_size == 0)
3036 /* Discard. However, it still might have (valid) symbols
3037 in it, so arbitrarily set it to section 1 (indexing is
3038 1-based here; usually .text). __end__ and other
3039 contents of .endsection really have this happen.
3040 FIXME: This seems somewhat dubious. */
3041 current->target_index = 1;
3044 current->target_index = target_index++;
3046 abfd->section_tail = ¤t->next;
3048 free (section_list);
3050 #else /* ! COFF_IMAGE_WITH_PE */
3052 /* Set the target_index field. */
3056 for (current = abfd->sections; current != NULL; current = current->next)
3057 current->target_index = target_index++;
3059 #endif /* ! COFF_IMAGE_WITH_PE */
3061 align_adjust = FALSE;
3062 for (current = abfd->sections;
3063 current != (asection *) NULL;
3064 current = current->next)
3066 #ifdef COFF_IMAGE_WITH_PE
3067 /* With PE we have to pad each section to be a multiple of its
3068 page size too, and remember both sizes. */
3069 if (coff_section_data (abfd, current) == NULL)
3071 bfd_size_type amt = sizeof (struct coff_section_tdata);
3072 current->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
3073 if (current->used_by_bfd == NULL)
3076 if (pei_section_data (abfd, current) == NULL)
3078 bfd_size_type amt = sizeof (struct pei_section_tdata);
3079 coff_section_data (abfd, current)->tdata
3080 = (PTR) bfd_zalloc (abfd, amt);
3081 if (coff_section_data (abfd, current)->tdata == NULL)
3084 if (pei_section_data (abfd, current)->virt_size == 0)
3085 pei_section_data (abfd, current)->virt_size = current->_raw_size;
3088 /* Only deal with sections which have contents. */
3089 if (!(current->flags & SEC_HAS_CONTENTS))
3092 #ifdef COFF_IMAGE_WITH_PE
3093 /* Make sure we skip empty sections in a PE image. */
3094 if (current->_raw_size == 0)
3098 /* Align the sections in the file to the same boundary on
3099 which they are aligned in virtual memory. I960 doesn't
3100 do this (FIXME) so we can stay in sync with Intel. 960
3101 doesn't yet page from files... */
3102 #ifdef ALIGN_SECTIONS_IN_FILE
3103 if ((abfd->flags & EXEC_P) != 0)
3105 /* Make sure this section is aligned on the right boundary - by
3106 padding the previous section up if necessary. */
3110 /* AIX loader checks the text section alignment of (vma - filepos)
3111 So even though the filepos may be aligned wrt the o_algntext, for
3112 AIX executables, this check fails. This shows up when a native
3113 AIX executable is stripped with gnu strip because the default vma
3114 of native is 0x10000150 but default for gnu is 0x10000140. Gnu
3115 stripped gnu excutable passes this check because the filepos is
3116 0x0140. This problem also show up with 64 bit shared objects. The
3117 data section must also be aligned. */
3118 if (!strcmp (current->name, _TEXT)
3119 || !strcmp (current->name, _DATA))
3124 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3126 align = 1 << current->alignment_power;
3127 pad = abs (current->vma - sofar) % align;
3138 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3141 if (previous != (asection *) NULL)
3142 previous->_raw_size += sofar - old_sofar;
3147 /* In demand paged files the low order bits of the file offset
3148 must match the low order bits of the virtual address. */
3149 #ifdef COFF_PAGE_SIZE
3150 if ((abfd->flags & D_PAGED) != 0
3151 && (current->flags & SEC_ALLOC) != 0)
3152 sofar += (current->vma - sofar) % page_size;
3154 current->filepos = sofar;
3156 #ifdef COFF_IMAGE_WITH_PE
3157 /* Set the padded size. */
3158 current->_raw_size = (current->_raw_size + page_size -1) & -page_size;
3161 sofar += current->_raw_size;
3163 #ifdef ALIGN_SECTIONS_IN_FILE
3164 /* Make sure that this section is of the right size too. */
3165 if ((abfd->flags & EXEC_P) == 0)
3167 bfd_size_type old_size;
3169 old_size = current->_raw_size;
3170 current->_raw_size = BFD_ALIGN (current->_raw_size,
3171 1 << current->alignment_power);
3172 align_adjust = current->_raw_size != old_size;
3173 sofar += current->_raw_size - old_size;
3178 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3179 align_adjust = sofar != old_sofar;
3180 current->_raw_size += sofar - old_sofar;
3184 #ifdef COFF_IMAGE_WITH_PE
3185 /* For PE we need to make sure we pad out to the aligned
3186 _raw_size, in case the caller only writes out data to the
3187 unaligned _raw_size. */
3188 if (pei_section_data (abfd, current)->virt_size < current->_raw_size)
3189 align_adjust = TRUE;
3193 /* Force .lib sections to start at zero. The vma is then
3194 incremented in coff_set_section_contents. This is right for
3196 if (strcmp (current->name, _LIB) == 0)
3197 bfd_set_section_vma (abfd, current, 0);
3203 /* It is now safe to write to the output file. If we needed an
3204 alignment adjustment for the last section, then make sure that
3205 there is a byte at offset sofar. If there are no symbols and no
3206 relocs, then nothing follows the last section. If we don't force
3207 the last byte out, then the file may appear to be truncated. */
3213 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
3214 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
3218 /* Make sure the relocations are aligned. We don't need to make
3219 sure that this byte exists, because it will only matter if there
3220 really are relocs. */
3221 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
3223 obj_relocbase (abfd) = sofar;
3224 abfd->output_has_begun = TRUE;
3231 /* This can never work, because it is called too late--after the
3232 section positions have been set. I can't figure out what it is
3233 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3235 /* If .file, .text, .data, .bss symbols are missing, add them. */
3236 /* @@ Should we only be adding missing symbols, or overriding the aux
3237 values for existing section symbols? */
3239 coff_add_missing_symbols (abfd)
3242 unsigned int nsyms = bfd_get_symcount (abfd);
3243 asymbol **sympp = abfd->outsymbols;
3246 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
3249 for (i = 0; i < nsyms; i++)
3251 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
3256 /* Only do this if there is a coff representation of the input
3258 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
3263 name = csym->symbol.name;
3266 if (!strcmp (name, _TEXT))
3269 else if (!strcmp (name, ".wtext"))
3272 else if (!strcmp (name, _DATA))
3274 else if (!strcmp (name, _BSS))
3278 /* Now i == bfd_get_symcount (abfd). */
3279 /* @@ For now, don't deal with .file symbol. */
3282 if (!need_text && !need_data && !need_bss && !need_file)
3284 nsyms += need_text + need_data + need_bss + need_file;
3286 amt *= sizeof (asymbol *);
3287 sympp2 = (asymbol **) bfd_alloc (abfd, amt);
3290 memcpy (sympp2, sympp, i * sizeof (asymbol *));
3293 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3297 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
3299 sympp2[i++] = coff_section_symbol (abfd, _DATA);
3301 sympp2[i++] = coff_section_symbol (abfd, _BSS);
3302 BFD_ASSERT (i == nsyms);
3303 bfd_set_symtab (abfd, sympp2, nsyms);
3309 #ifdef COFF_IMAGE_WITH_PE
3311 static unsigned int pelength;
3312 static unsigned int peheader;
3315 coff_read_word (abfd, value)
3317 unsigned int *value;
3322 status = bfd_bread (b, (bfd_size_type) 2, abfd);
3330 *value = (unsigned int) b[0];
3332 *value = (unsigned int) (b[0] + (b[1] << 8));
3334 pelength += (unsigned int) status;
3340 coff_compute_checksum (abfd)
3343 bfd_boolean more_data;
3350 filepos = (file_ptr) 0;
3354 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
3357 more_data = coff_read_word (abfd, &value);
3359 total = 0xffff & (total + (total >> 0x10));
3364 return (0xffff & (total + (total >> 0x10)));
3368 coff_apply_checksum (abfd)
3371 unsigned int computed;
3372 unsigned int checksum = 0;
3374 if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0)
3377 if (!coff_read_word (abfd, &peheader))
3380 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3384 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3386 if (bfd_seek (abfd, peheader, SEEK_SET) != 0)
3389 computed = coff_compute_checksum (abfd);
3391 checksum = computed + pelength;
3393 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3396 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3401 #endif /* COFF_IMAGE_WITH_PE */
3406 coff_write_object_contents (abfd)
3410 bfd_boolean hasrelocs = FALSE;
3411 bfd_boolean haslinno = FALSE;
3412 bfd_boolean hasdebug = FALSE;
3414 file_ptr reloc_base;
3415 file_ptr lineno_base;
3417 unsigned long reloc_size = 0, reloc_count = 0;
3418 unsigned long lnno_size = 0;
3419 bfd_boolean long_section_names;
3420 asection *text_sec = NULL;
3421 asection *data_sec = NULL;
3422 asection *bss_sec = NULL;
3423 struct internal_filehdr internal_f;
3424 struct internal_aouthdr internal_a;
3425 #ifdef COFF_LONG_SECTION_NAMES
3426 size_t string_size = STRING_SIZE_SIZE;
3429 bfd_set_error (bfd_error_system_call);
3431 /* Make a pass through the symbol table to count line number entries and
3432 put them into the correct asections. */
3434 lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd);
3436 if (! abfd->output_has_begun)
3438 if (! coff_compute_section_file_positions (abfd))
3442 reloc_base = obj_relocbase (abfd);
3444 /* Work out the size of the reloc and linno areas. */
3446 for (current = abfd->sections; current != NULL; current =
3450 /* We store the actual reloc count in the first reloc's addr. */
3451 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3454 reloc_count += current->reloc_count;
3457 reloc_size = reloc_count * bfd_coff_relsz (abfd);
3459 lineno_base = reloc_base + reloc_size;
3460 sym_base = lineno_base + lnno_size;
3462 /* Indicate in each section->line_filepos its actual file address. */
3463 for (current = abfd->sections; current != NULL; current =
3466 if (current->lineno_count)
3468 current->line_filepos = lineno_base;
3469 current->moving_line_filepos = lineno_base;
3470 lineno_base += current->lineno_count * bfd_coff_linesz (abfd);
3474 current->line_filepos = 0;
3476 if (current->reloc_count)
3478 current->rel_filepos = reloc_base;
3479 reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
3481 /* Extra reloc to hold real count. */
3482 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3483 reloc_base += bfd_coff_relsz (abfd);
3488 current->rel_filepos = 0;
3492 /* Write section headers to the file. */
3493 internal_f.f_nscns = 0;
3495 if ((abfd->flags & EXEC_P) != 0)
3496 scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
3499 scn_base = bfd_coff_filhsz (abfd);
3502 if (xcoff_data (abfd)->full_aouthdr)
3503 scn_base += bfd_coff_aoutsz (abfd);
3505 scn_base += SMALL_AOUTSZ;
3510 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
3513 long_section_names = FALSE;
3514 for (current = abfd->sections;
3516 current = current->next)
3518 struct internal_scnhdr section;
3519 bfd_boolean is_reloc_section = FALSE;
3521 #ifdef COFF_IMAGE_WITH_PE
3522 if (strcmp (current->name, ".reloc") == 0)
3524 is_reloc_section = TRUE;
3526 pe_data (abfd)->has_reloc_section = 1;
3530 internal_f.f_nscns++;
3532 strncpy (section.s_name, current->name, SCNNMLEN);
3534 #ifdef COFF_LONG_SECTION_NAMES
3535 /* Handle long section names as in PE. This must be compatible
3536 with the code in coff_write_symbols and _bfd_coff_final_link. */
3540 len = strlen (current->name);
3543 memset (section.s_name, 0, SCNNMLEN);
3544 sprintf (section.s_name, "/%lu", (unsigned long) string_size);
3545 string_size += len + 1;
3546 long_section_names = TRUE;
3552 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3553 Ian Taylor <ian@cygnus.com>. */
3554 if (strcmp (current->name, _LIB) == 0)
3555 section.s_vaddr = 0;
3558 section.s_vaddr = current->vma;
3559 section.s_paddr = current->lma;
3560 section.s_size = current->_raw_size;
3561 #ifdef coff_get_section_load_page
3562 section.s_page = coff_get_section_load_page (current);
3566 section.s_paddr = 0;
3568 #ifdef COFF_IMAGE_WITH_PE
3569 /* Reminder: s_paddr holds the virtual size of the section. */
3570 if (coff_section_data (abfd, current) != NULL
3571 && pei_section_data (abfd, current) != NULL)
3572 section.s_paddr = pei_section_data (abfd, current)->virt_size;
3574 section.s_paddr = 0;
3577 /* If this section has no size or is unloadable then the scnptr
3579 if (current->_raw_size == 0 ||
3580 (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
3581 section.s_scnptr = 0;
3583 section.s_scnptr = current->filepos;
3585 section.s_relptr = current->rel_filepos;
3586 section.s_lnnoptr = current->line_filepos;
3587 section.s_nreloc = current->reloc_count;
3588 section.s_nlnno = current->lineno_count;
3589 #ifndef COFF_IMAGE_WITH_PE
3590 /* In PEI, relocs come in the .reloc section. */
3591 if (current->reloc_count != 0)
3594 if (current->lineno_count != 0)
3596 if ((current->flags & SEC_DEBUGGING) != 0
3597 && ! is_reloc_section)
3602 /* Indicate the use of an XCOFF overflow section header. */
3603 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3605 section.s_nreloc = 0xffff;
3606 section.s_nlnno = 0xffff;
3611 section.s_flags = sec_to_styp_flags (current->name, current->flags);
3613 if (!strcmp (current->name, _TEXT))
3615 else if (!strcmp (current->name, _DATA))
3617 else if (!strcmp (current->name, _BSS))
3621 section.s_align = (current->alignment_power
3622 ? 1 << current->alignment_power
3626 /* TI COFF puts the alignment power in bits 8-11 of the flags. */
3627 section.s_flags |= (current->alignment_power & 0xF) << 8;
3629 #ifdef COFF_ENCODE_ALIGNMENT
3630 COFF_ENCODE_ALIGNMENT(section, current->alignment_power);
3633 #ifdef COFF_IMAGE_WITH_PE
3634 /* Suppress output of the sections if they are null. ld
3635 includes the bss and data sections even if there is no size
3636 assigned to them. NT loader doesn't like it if these section
3637 headers are included if the sections themselves are not
3638 needed. See also coff_compute_section_file_positions. */
3639 if (section.s_size == 0)
3640 internal_f.f_nscns--;
3645 bfd_size_type amt = bfd_coff_scnhsz (abfd);
3647 if (coff_swap_scnhdr_out (abfd, §ion, &buff) == 0
3648 || bfd_bwrite ((PTR) &buff, amt, abfd) != amt)
3653 /* PE stores COMDAT section information in the symbol table. If
3654 this section is supposed to have some COMDAT info, track down
3655 the symbol in the symbol table and modify it. */
3656 if ((current->flags & SEC_LINK_ONCE) != 0)
3658 unsigned int i, count;
3660 coff_symbol_type *csym = NULL;
3664 count = bfd_get_symcount (abfd);
3665 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
3667 if ((*psym)->section != current)
3670 /* Remember the location of the first symbol in this
3672 if (psymsec == NULL)
3675 /* See if this is the section symbol. */
3676 if (strcmp ((*psym)->name, current->name) == 0)
3678 csym = coff_symbol_from (abfd, *psym);
3680 || csym->native == NULL
3681 || csym->native->u.syment.n_numaux < 1
3682 || csym->native->u.syment.n_sclass != C_STAT
3683 || csym->native->u.syment.n_type != T_NULL)
3686 /* Here *PSYM is the section symbol for CURRENT. */
3693 Note that we might not if we're converting the file from
3694 some other object file format. */
3697 combined_entry_type *aux;
3699 /* We don't touch the x_checksum field. The
3700 x_associated field is not currently supported. */
3702 aux = csym->native + 1;
3703 switch (current->flags & SEC_LINK_DUPLICATES)
3705 case SEC_LINK_DUPLICATES_DISCARD:
3706 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
3709 case SEC_LINK_DUPLICATES_ONE_ONLY:
3710 aux->u.auxent.x_scn.x_comdat =
3711 IMAGE_COMDAT_SELECT_NODUPLICATES;
3714 case SEC_LINK_DUPLICATES_SAME_SIZE:
3715 aux->u.auxent.x_scn.x_comdat =
3716 IMAGE_COMDAT_SELECT_SAME_SIZE;
3719 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
3720 aux->u.auxent.x_scn.x_comdat =
3721 IMAGE_COMDAT_SELECT_EXACT_MATCH;
3725 /* The COMDAT symbol must be the first symbol from this
3726 section in the symbol table. In order to make this
3727 work, we move the COMDAT symbol before the first
3728 symbol we found in the search above. It's OK to
3729 rearrange the symbol table at this point, because
3730 coff_renumber_symbols is going to rearrange it
3731 further and fix up all the aux entries. */
3732 if (psym != psymsec)
3738 for (pcopy = psym; pcopy > psymsec; pcopy--)
3739 pcopy[0] = pcopy[-1];
3744 #endif /* COFF_WITH_PE */
3749 /* XCOFF handles overflows in the reloc and line number count fields
3750 by creating a new section header to hold the correct values. */
3751 for (current = abfd->sections; current != NULL; current = current->next)
3753 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3755 struct internal_scnhdr scnhdr;
3759 internal_f.f_nscns++;
3760 strncpy (&(scnhdr.s_name[0]), current->name, 8);
3761 scnhdr.s_paddr = current->reloc_count;
3762 scnhdr.s_vaddr = current->lineno_count;
3764 scnhdr.s_scnptr = 0;
3765 scnhdr.s_relptr = current->rel_filepos;
3766 scnhdr.s_lnnoptr = current->line_filepos;
3767 scnhdr.s_nreloc = current->target_index;
3768 scnhdr.s_nlnno = current->target_index;
3769 scnhdr.s_flags = STYP_OVRFLO;
3770 amt = bfd_coff_scnhsz (abfd);
3771 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
3772 || bfd_bwrite ((PTR) &buff, amt, abfd) != amt)
3779 /* OK, now set up the filehdr... */
3781 /* Don't include the internal abs section in the section count */
3783 /* We will NOT put a fucking timestamp in the header here. Every time you
3784 put it back, I will come in and take it out again. I'm sorry. This
3785 field does not belong here. We fill it with a 0 so it compares the
3786 same but is not a reasonable time. -- gnu@cygnus.com */
3787 internal_f.f_timdat = 0;
3788 internal_f.f_flags = 0;
3790 if (abfd->flags & EXEC_P)
3791 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3794 internal_f.f_opthdr = 0;
3797 if (xcoff_data (abfd)->full_aouthdr)
3798 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3800 internal_f.f_opthdr = SMALL_AOUTSZ;
3806 internal_f.f_flags |= F_RELFLG;
3808 internal_f.f_flags |= F_LNNO;
3809 if (abfd->flags & EXEC_P)
3810 internal_f.f_flags |= F_EXEC;
3811 #ifdef COFF_IMAGE_WITH_PE
3813 internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED;
3816 #ifndef COFF_WITH_PE
3817 if (bfd_little_endian (abfd))
3818 internal_f.f_flags |= F_AR32WR;
3820 internal_f.f_flags |= F_AR32W;
3824 /* Target id is used in TI COFF v1 and later; COFF0 won't use this field,
3825 but it doesn't hurt to set it internally. */
3826 internal_f.f_target_id = TI_TARGET_ID;
3828 #ifdef TIC80_TARGET_ID
3829 internal_f.f_target_id = TIC80_TARGET_ID;
3832 /* FIXME, should do something about the other byte orders and
3836 if ((abfd->flags & DYNAMIC) != 0)
3837 internal_f.f_flags |= F_SHROBJ;
3838 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
3839 internal_f.f_flags |= F_DYNLOAD;
3842 memset (&internal_a, 0, sizeof internal_a);
3844 /* Set up architecture-dependent stuff. */
3846 unsigned int magic = 0;
3847 unsigned short flags = 0;
3849 coff_set_flags (abfd, &magic, &flags);
3850 internal_f.f_magic = magic;
3851 internal_f.f_flags |= flags;
3852 /* ...and the "opt"hdr... */
3855 #ifdef ULTRA3 /* NYU's machine */
3856 /* FIXME: This is a bogus check. I really want to see if there
3857 is a .shbss or a .shdata section, if so then set the magic
3858 number to indicate a shared data executable. */
3859 if (internal_f.f_nscns >= 7)
3860 internal_a.magic = SHMAGIC; /* Shared magic. */
3863 internal_a.magic = NMAGIC; /* Assume separate i/d. */
3864 #define __A_MAGIC_SET__
3866 #ifdef TICOFF_AOUT_MAGIC
3867 internal_a.magic = TICOFF_AOUT_MAGIC;
3868 #define __A_MAGIC_SET__
3871 internal_a.magic = TIC80_ARCH_MAGIC;
3872 #define __A_MAGIC_SET__
3875 /* FIXME: What are the a.out magic numbers for the i860? */
3876 internal_a.magic = 0;
3877 #define __A_MAGIC_SET__
3880 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
3881 #define __A_MAGIC_SET__
3884 #define __A_MAGIC_SET__
3885 internal_a.magic = PAGEMAGICBCS;
3889 #define __A_MAGIC_SET__
3890 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
3893 #if defined(M68) || defined(WE32K) || defined(M68K)
3894 #define __A_MAGIC_SET__
3896 internal_a.magic = LYNXCOFFMAGIC;
3898 #if defined(TARG_AUX)
3899 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
3900 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
3901 PAGEMAGICEXECSWAPPED);
3903 #if defined (PAGEMAGICPEXECPAGED)
3904 internal_a.magic = PAGEMAGICPEXECPAGED;
3906 #endif /* TARG_AUX */
3908 #endif /* M68 || WE32K || M68K */
3911 #define __A_MAGIC_SET__
3912 internal_a.magic = ZMAGIC;
3916 #define __A_MAGIC_SET__
3917 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3920 #if defined MCORE_PE
3921 #define __A_MAGIC_SET__
3922 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3926 #define __A_MAGIC_SET__
3928 internal_a.magic = LYNXCOFFMAGIC;
3930 internal_a.magic = ZMAGIC;
3935 #define __A_MAGIC_SET__
3936 internal_a.magic = ZMAGIC;
3940 #define __A_MAGIC_SET__
3942 internal_a.magic = LYNXCOFFMAGIC;
3947 #define __A_MAGIC_SET__
3948 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
3949 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
3950 RS6K_AOUTHDR_OMAGIC;
3953 #if defined(SH) && defined(COFF_WITH_PE)
3954 #define __A_MAGIC_SET__
3955 internal_a.magic = SH_PE_MAGIC;
3958 #if defined(MIPS) && defined(COFF_WITH_PE)
3959 #define __A_MAGIC_SET__
3960 internal_a.magic = MIPS_PE_MAGIC;
3964 #define __A_MAGIC_SET__
3965 internal_a.magic = NMAGIC; /* Assume separate i/d. */
3968 #ifndef __A_MAGIC_SET__
3969 #include "Your aouthdr magic number is not being set!"
3971 #undef __A_MAGIC_SET__
3975 /* FIXME: Does anybody ever set this to another value? */
3976 internal_a.vstamp = 0;
3978 /* Now should write relocs, strings, syms. */
3979 obj_sym_filepos (abfd) = sym_base;
3981 if (bfd_get_symcount (abfd) != 0)
3985 if (!coff_add_missing_symbols (abfd))
3988 if (!coff_renumber_symbols (abfd, &firstundef))
3990 coff_mangle_symbols (abfd);
3991 if (! coff_write_symbols (abfd))
3993 if (! coff_write_linenumbers (abfd))
3995 if (! coff_write_relocs (abfd, firstundef))
3998 #ifdef COFF_LONG_SECTION_NAMES
3999 else if (long_section_names && ! obj_coff_strings_written (abfd))
4001 /* If we have long section names we have to write out the string
4002 table even if there are no symbols. */
4003 if (! coff_write_symbols (abfd))
4007 #ifdef COFF_IMAGE_WITH_PE
4009 else if ((abfd->flags & EXEC_P) != 0)
4013 /* PowerPC PE appears to require that all executable files be
4014 rounded up to the page size. */
4017 (file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
4019 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
4025 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
4026 backend linker, and obj_raw_syment_count is not valid until after
4027 coff_write_symbols is called. */
4028 if (obj_raw_syment_count (abfd) != 0)
4030 internal_f.f_symptr = sym_base;
4032 /* AIX appears to require that F_RELFLG not be set if there are
4033 local symbols but no relocations. */
4034 internal_f.f_flags &=~ F_RELFLG;
4039 if (long_section_names)
4040 internal_f.f_symptr = sym_base;
4042 internal_f.f_symptr = 0;
4043 internal_f.f_flags |= F_LSYMS;
4048 internal_a.tsize = bfd_get_section_size_before_reloc (text_sec);
4049 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
4053 internal_a.dsize = bfd_get_section_size_before_reloc (data_sec);
4054 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
4058 internal_a.bsize = bfd_get_section_size_before_reloc (bss_sec);
4059 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
4060 internal_a.data_start = bss_sec->vma;
4063 internal_a.entry = bfd_get_start_address (abfd);
4064 internal_f.f_nsyms = obj_raw_syment_count (abfd);
4067 if (xcoff_data (abfd)->full_aouthdr)
4070 asection *loader_sec;
4072 internal_a.vstamp = 1;
4074 internal_a.o_snentry = xcoff_data (abfd)->snentry;
4075 if (internal_a.o_snentry == 0)
4076 internal_a.entry = (bfd_vma) -1;
4078 if (text_sec != NULL)
4080 internal_a.o_sntext = text_sec->target_index;
4081 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
4085 internal_a.o_sntext = 0;
4086 internal_a.o_algntext = 0;
4088 if (data_sec != NULL)
4090 internal_a.o_sndata = data_sec->target_index;
4091 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
4095 internal_a.o_sndata = 0;
4096 internal_a.o_algndata = 0;
4098 loader_sec = bfd_get_section_by_name (abfd, ".loader");
4099 if (loader_sec != NULL)
4100 internal_a.o_snloader = loader_sec->target_index;
4102 internal_a.o_snloader = 0;
4103 if (bss_sec != NULL)
4104 internal_a.o_snbss = bss_sec->target_index;
4106 internal_a.o_snbss = 0;
4108 toc = xcoff_data (abfd)->toc;
4109 internal_a.o_toc = toc;
4110 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
4112 internal_a.o_modtype = xcoff_data (abfd)->modtype;
4113 if (xcoff_data (abfd)->cputype != -1)
4114 internal_a.o_cputype = xcoff_data (abfd)->cputype;
4117 switch (bfd_get_arch (abfd))
4119 case bfd_arch_rs6000:
4120 internal_a.o_cputype = 4;
4122 case bfd_arch_powerpc:
4123 if (bfd_get_mach (abfd) == bfd_mach_ppc)
4124 internal_a.o_cputype = 3;
4126 internal_a.o_cputype = 1;
4132 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
4133 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
4137 /* now write them */
4138 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
4143 bfd_size_type amount = bfd_coff_filhsz (abfd);
4145 buff = bfd_malloc (amount);
4149 bfd_coff_swap_filehdr_out (abfd, (PTR) &internal_f, (PTR) buff);
4150 amount = bfd_bwrite ((PTR) buff, amount, abfd);
4154 if (amount != bfd_coff_filhsz (abfd))
4158 if (abfd->flags & EXEC_P)
4160 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
4161 include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)). */
4163 bfd_size_type amount = bfd_coff_aoutsz (abfd);
4165 buff = bfd_malloc (amount);
4169 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) buff);
4170 amount = bfd_bwrite ((PTR) buff, amount, abfd);
4174 if (amount != bfd_coff_aoutsz (abfd))
4177 #ifdef COFF_IMAGE_WITH_PE
4178 if (! coff_apply_checksum (abfd))
4188 /* XCOFF seems to always write at least a small a.out header. */
4189 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff);
4190 if (xcoff_data (abfd)->full_aouthdr)
4191 size = bfd_coff_aoutsz (abfd);
4193 size = SMALL_AOUTSZ;
4194 if (bfd_bwrite ((PTR) &buff, (bfd_size_type) size, abfd) != size)
4203 coff_set_section_contents (abfd, section, location, offset, count)
4208 bfd_size_type count;
4210 if (! abfd->output_has_begun) /* Set by bfd.c handler. */
4212 if (! coff_compute_section_file_positions (abfd))
4216 #if defined(_LIB) && !defined(TARG_AUX)
4218 /* The physical address field of a .lib section is used to hold the
4219 number of shared libraries in the section. This code counts the
4220 number of sections being written, and increments the lma field
4223 I have found no documentation on the contents of this section.
4224 Experimentation indicates that the section contains zero or more
4225 records, each of which has the following structure:
4227 - a (four byte) word holding the length of this record, in words,
4228 - a word that always seems to be set to "2",
4229 - the path to a shared library, null-terminated and then padded
4230 to a whole word boundary.
4232 bfd_assert calls have been added to alert if an attempt is made
4233 to write a section which doesn't follow these assumptions. The
4234 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4235 <robertl@arnet.com> (Thanks!).
4237 Gvran Uddeborg <gvran@uddeborg.pp.se>. */
4239 if (strcmp (section->name, _LIB) == 0)
4241 bfd_byte *rec, *recend;
4243 rec = (bfd_byte *) location;
4244 recend = rec + count;
4245 while (rec < recend)
4248 rec += bfd_get_32 (abfd, rec) * 4;
4251 BFD_ASSERT (rec == recend);
4256 /* Don't write out bss sections - one way to do this is to
4257 see if the filepos has not been set. */
4258 if (section->filepos == 0)
4261 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
4267 return bfd_bwrite (location, count, abfd) == count;
4271 coff_close_and_cleanup (abfd)
4274 if (!bfd_read_p (abfd))
4275 switch (abfd->format)
4278 if (!_bfd_write_archive_contents (abfd))
4282 if (!coff_write_object_contents (abfd))
4286 bfd_set_error (bfd_error_invalid_operation);
4290 /* We depend on bfd_close to free all the memory on the objalloc. */
4297 buy_and_read (abfd, where, size)
4302 PTR area = (PTR) bfd_alloc (abfd, size);
4305 if (bfd_seek (abfd, where, SEEK_SET) != 0
4306 || bfd_bread (area, size, abfd) != size)
4309 } /* buy_and_read() */
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 ?
4336 coff_slurp_line_table (abfd, asect)
4340 LINENO *native_lineno;
4341 alent *lineno_cache;
4344 BFD_ASSERT (asect->lineno == (alent *) NULL);
4346 amt = (bfd_size_type) bfd_coff_linesz (abfd) * asect->lineno_count;
4347 native_lineno = (LINENO *) buy_and_read (abfd, asect->line_filepos, amt);
4348 amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent);
4349 lineno_cache = (alent *) bfd_alloc (abfd, amt);
4350 if (lineno_cache == NULL)
4354 unsigned int counter = 0;
4355 alent *cache_ptr = lineno_cache;
4356 LINENO *src = native_lineno;
4358 while (counter < asect->lineno_count)
4360 struct internal_lineno dst;
4362 bfd_coff_swap_lineno_in (abfd, src, &dst);
4363 cache_ptr->line_number = dst.l_lnno;
4365 if (cache_ptr->line_number == 0)
4368 bfd_signed_vma symndx;
4369 coff_symbol_type *sym;
4372 symndx = dst.l_addr.l_symndx;
4374 || (bfd_vma) symndx >= obj_raw_syment_count (abfd))
4376 (*_bfd_error_handler)
4377 (_("%s: warning: illegal symbol index %ld in line numbers"),
4378 bfd_archive_filename (abfd), dst.l_addr.l_symndx);
4382 /* FIXME: We should not be casting between ints and
4383 pointers like this. */
4384 sym = ((coff_symbol_type *)
4385 ((symndx + obj_raw_syments (abfd))
4386 ->u.syment._n._n_n._n_zeroes));
4387 cache_ptr->u.sym = (asymbol *) sym;
4388 if (sym->lineno != NULL && ! warned)
4390 (*_bfd_error_handler)
4391 (_("%s: warning: duplicate line number information for `%s'"),
4392 bfd_archive_filename (abfd),
4393 bfd_asymbol_name (&sym->symbol));
4395 sym->lineno = cache_ptr;
4399 cache_ptr->u.offset = dst.l_addr.l_paddr
4400 - bfd_section_vma (abfd, asect);
4401 } /* If no linenumber expect a symbol index */
4407 cache_ptr->line_number = 0;
4410 asect->lineno = lineno_cache;
4411 /* FIXME, free native_lineno here, or use alloca or something. */
4415 /* Slurp in the symbol table, converting it to generic form. Note
4416 that if coff_relocate_section is defined, the linker will read
4417 symbols via coff_link_add_symbols, rather than via this routine. */
4420 coff_slurp_symbol_table (abfd)
4423 combined_entry_type *native_symbols;
4424 coff_symbol_type *cached_area;
4425 unsigned int *table_ptr;
4427 unsigned int number_of_symbols = 0;
4429 if (obj_symbols (abfd))
4432 /* Read in the symbol table. */
4433 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
4436 /* Allocate enough room for all the symbols in cached form. */
4437 amt = obj_raw_syment_count (abfd);
4438 amt *= sizeof (coff_symbol_type);
4439 cached_area = (coff_symbol_type *) bfd_alloc (abfd, amt);
4440 if (cached_area == NULL)
4443 amt = obj_raw_syment_count (abfd);
4444 amt *= sizeof (unsigned int);
4445 table_ptr = (unsigned int *) bfd_alloc (abfd, amt);
4447 if (table_ptr == NULL)
4451 coff_symbol_type *dst = cached_area;
4452 unsigned int last_native_index = obj_raw_syment_count (abfd);
4453 unsigned int this_index = 0;
4455 while (this_index < last_native_index)
4457 combined_entry_type *src = native_symbols + this_index;
4458 table_ptr[this_index] = number_of_symbols;
4459 dst->symbol.the_bfd = abfd;
4461 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
4462 /* We use the native name field to point to the cached field. */
4463 src->u.syment._n._n_n._n_zeroes = (long) dst;
4464 dst->symbol.section = coff_section_from_bfd_index (abfd,
4465 src->u.syment.n_scnum);
4466 dst->symbol.flags = 0;
4467 dst->done_lineno = FALSE;
4469 switch (src->u.syment.n_sclass)
4474 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
4475 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4476 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4478 /* Fall through to next case. */
4485 case C_THUMBEXTFUNC:
4491 case C_SYSTEM: /* System Wide variable. */
4494 /* In PE, 0x68 (104) denotes a section symbol. */
4496 /* In PE, 0x69 (105) denotes a weak external symbol. */
4499 switch (coff_classify_symbol (abfd, &src->u.syment))
4501 case COFF_SYMBOL_GLOBAL:
4502 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4503 #if defined COFF_WITH_PE
4504 /* PE sets the symbol to a value relative to the
4505 start of the section. */
4506 dst->symbol.value = src->u.syment.n_value;
4508 dst->symbol.value = (src->u.syment.n_value
4509 - dst->symbol.section->vma);
4511 if (ISFCN ((src->u.syment.n_type)))
4513 /* A function ext does not go at the end of a
4515 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4519 case COFF_SYMBOL_COMMON:
4520 dst->symbol.section = bfd_com_section_ptr;
4521 dst->symbol.value = src->u.syment.n_value;
4524 case COFF_SYMBOL_UNDEFINED:
4525 dst->symbol.section = bfd_und_section_ptr;
4526 dst->symbol.value = 0;
4529 case COFF_SYMBOL_PE_SECTION:
4530 dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM;
4531 dst->symbol.value = 0;
4534 case COFF_SYMBOL_LOCAL:
4535 dst->symbol.flags = BSF_LOCAL;
4536 #if defined COFF_WITH_PE
4537 /* PE sets the symbol to a value relative to the
4538 start of the section. */
4539 dst->symbol.value = src->u.syment.n_value;
4541 dst->symbol.value = (src->u.syment.n_value
4542 - dst->symbol.section->vma);
4544 if (ISFCN ((src->u.syment.n_type)))
4545 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4550 /* A symbol with a csect entry should not go at the end. */
4551 if (src->u.syment.n_numaux > 0)
4552 dst->symbol.flags |= BSF_NOT_AT_END;
4556 if (src->u.syment.n_sclass == C_NT_WEAK)
4557 dst->symbol.flags |= BSF_WEAK;
4559 if (src->u.syment.n_sclass == C_SECTION
4560 && src->u.syment.n_scnum > 0)
4561 dst->symbol.flags = BSF_LOCAL;
4563 if (src->u.syment.n_sclass == C_WEAKEXT)
4564 dst->symbol.flags |= BSF_WEAK;
4568 case C_STAT: /* Static. */
4570 case C_LEAFSTAT: /* Static leaf procedure. */
4573 case C_THUMBSTAT: /* Thumb static. */
4574 case C_THUMBLABEL: /* Thumb label. */
4575 case C_THUMBSTATFUNC:/* Thumb static function. */
4577 case C_LABEL: /* Label. */
4578 if (src->u.syment.n_scnum == N_DEBUG)
4579 dst->symbol.flags = BSF_DEBUGGING;
4581 dst->symbol.flags = BSF_LOCAL;
4583 /* Base the value as an index from the base of the
4584 section, if there is one. */
4585 if (dst->symbol.section)
4587 #if defined COFF_WITH_PE
4588 /* PE sets the symbol to a value relative to the
4589 start of the section. */
4590 dst->symbol.value = src->u.syment.n_value;
4592 dst->symbol.value = (src->u.syment.n_value
4593 - dst->symbol.section->vma);
4597 dst->symbol.value = src->u.syment.n_value;
4600 case C_MOS: /* Member of structure. */
4601 case C_EOS: /* End of structure. */
4602 #ifdef NOTDEF /* C_AUTOARG has the same value. */
4604 case C_GLBLREG: /* A29k-specific storage class. */
4607 case C_REGPARM: /* Register parameter. */
4608 case C_REG: /* register variable. */
4609 /* C_AUTOARG conflictes with TI COFF C_UEXT. */
4610 #if !defined (TIC80COFF) && !defined (TICOFF)
4612 case C_AUTOARG: /* 960-specific storage class. */
4615 case C_TPDEF: /* Type definition. */
4617 case C_AUTO: /* Automatic variable. */
4618 case C_FIELD: /* Bit field. */
4619 case C_ENTAG: /* Enumeration tag. */
4620 case C_MOE: /* Member of enumeration. */
4621 case C_MOU: /* Member of union. */
4622 case C_UNTAG: /* Union tag. */
4623 dst->symbol.flags = BSF_DEBUGGING;
4624 dst->symbol.value = (src->u.syment.n_value);
4627 case C_FILE: /* File name. */
4628 case C_STRTAG: /* Structure tag. */
4643 dst->symbol.flags = BSF_DEBUGGING;
4644 dst->symbol.value = (src->u.syment.n_value);
4648 case C_BINCL: /* Beginning of include file. */
4649 case C_EINCL: /* Ending of include file. */
4650 /* The value is actually a pointer into the line numbers
4651 of the file. We locate the line number entry, and
4652 set the section to the section which contains it, and
4653 the value to the index in that section. */
4657 dst->symbol.flags = BSF_DEBUGGING;
4658 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4659 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
4660 && ((file_ptr) (sec->line_filepos
4661 + sec->lineno_count * bfd_coff_linesz (abfd))
4662 > (file_ptr) src->u.syment.n_value))
4665 dst->symbol.value = 0;
4668 dst->symbol.section = sec;
4669 dst->symbol.value = ((src->u.syment.n_value
4670 - sec->line_filepos)
4671 / bfd_coff_linesz (abfd));
4678 dst->symbol.flags = BSF_DEBUGGING;
4680 /* The value is actually a symbol index. Save a pointer
4681 to the symbol instead of the index. FIXME: This
4682 should use a union. */
4683 src->u.syment.n_value =
4684 (long) (native_symbols + src->u.syment.n_value);
4685 dst->symbol.value = src->u.syment.n_value;
4690 case C_BLOCK: /* ".bb" or ".eb". */
4691 case C_FCN: /* ".bf" or ".ef" (or PE ".lf"). */
4692 case C_EFCN: /* Physical end of function. */
4693 #if defined COFF_WITH_PE
4694 /* PE sets the symbol to a value relative to the start
4696 dst->symbol.value = src->u.syment.n_value;
4697 if (strcmp (dst->symbol.name, ".bf") != 0)
4699 /* PE uses funny values for .ef and .lf; don't
4701 dst->symbol.flags = BSF_DEBUGGING;
4704 dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC;
4706 /* Base the value as an index from the base of the
4708 dst->symbol.flags = BSF_LOCAL;
4709 dst->symbol.value = (src->u.syment.n_value
4710 - dst->symbol.section->vma);
4714 case C_STATLAB: /* Static load time label. */
4715 dst->symbol.value = src->u.syment.n_value;
4716 dst->symbol.flags = BSF_GLOBAL;
4720 /* PE DLLs sometimes have zeroed out symbols for some
4721 reason. Just ignore them without a warning. */
4722 if (src->u.syment.n_type == 0
4723 && src->u.syment.n_value == 0
4724 && src->u.syment.n_scnum == 0)
4727 case C_EXTDEF: /* External definition. */
4728 case C_ULABEL: /* Undefined label. */
4729 case C_USTATIC: /* Undefined static. */
4730 #ifndef COFF_WITH_PE
4731 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4732 class to represent a section symbol. */
4733 case C_LINE: /* line # reformatted as symbol table entry. */
4734 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4735 case C_ALIAS: /* Duplicate tag. */
4737 /* New storage classes for TI COFF. */
4738 #if defined(TIC80COFF) || defined(TICOFF)
4739 case C_UEXT: /* Tentative external definition. */
4741 case C_EXTLAB: /* External load time label. */
4742 case C_HIDDEN: /* Ext symbol in dmert public lib. */
4744 (*_bfd_error_handler)
4745 (_("%s: Unrecognized storage class %d for %s symbol `%s'"),
4746 bfd_archive_filename (abfd), src->u.syment.n_sclass,
4747 dst->symbol.section->name, dst->symbol.name);
4748 dst->symbol.flags = BSF_DEBUGGING;
4749 dst->symbol.value = (src->u.syment.n_value);
4753 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4757 dst->symbol.udata.i = 0;
4758 dst->lineno = (alent *) NULL;
4759 this_index += (src->u.syment.n_numaux) + 1;
4761 number_of_symbols++;
4765 obj_symbols (abfd) = cached_area;
4766 obj_raw_syments (abfd) = native_symbols;
4768 bfd_get_symcount (abfd) = number_of_symbols;
4769 obj_convert (abfd) = table_ptr;
4770 /* Slurp the line tables for each section too. */
4777 coff_slurp_line_table (abfd, p);
4783 } /* coff_slurp_symbol_table() */
4785 /* Classify a COFF symbol. A couple of targets have globally visible
4786 symbols which are not class C_EXT, and this handles those. It also
4787 recognizes some special PE cases. */
4789 static enum coff_symbol_classification
4790 coff_classify_symbol (abfd, syment)
4792 struct internal_syment *syment;
4794 /* FIXME: This partially duplicates the switch in
4795 coff_slurp_symbol_table. */
4796 switch (syment->n_sclass)
4805 case C_THUMBEXTFUNC:
4813 if (syment->n_scnum == 0)
4815 if (syment->n_value == 0)
4816 return COFF_SYMBOL_UNDEFINED;
4818 return COFF_SYMBOL_COMMON;
4820 return COFF_SYMBOL_GLOBAL;
4827 if (syment->n_sclass == C_STAT)
4829 if (syment->n_scnum == 0)
4831 /* The Microsoft compiler sometimes generates these if a
4832 small static function is inlined every time it is used.
4833 The function is discarded, but the symbol table entry
4835 return COFF_SYMBOL_LOCAL;
4838 #ifdef STRICT_PE_FORMAT
4839 /* This is correct for Microsoft generated objects, but it
4840 breaks gas generated objects. */
4842 if (syment->n_value == 0)
4845 char buf[SYMNMLEN + 1];
4847 sec = coff_section_from_bfd_index (abfd, syment->n_scnum);
4849 && (strcmp (bfd_get_section_name (abfd, sec),
4850 _bfd_coff_internal_syment_name (abfd, syment, buf))
4852 return COFF_SYMBOL_PE_SECTION;
4856 return COFF_SYMBOL_LOCAL;
4859 if (syment->n_sclass == C_SECTION)
4861 /* In some cases in a DLL generated by the Microsoft linker, the
4862 n_value field will contain garbage. FIXME: This should
4863 probably be handled by the swapping function instead. */
4864 syment->n_value = 0;
4865 if (syment->n_scnum == 0)
4866 return COFF_SYMBOL_UNDEFINED;
4867 return COFF_SYMBOL_PE_SECTION;
4869 #endif /* COFF_WITH_PE */
4871 /* If it is not a global symbol, we presume it is a local symbol. */
4873 if (syment->n_scnum == 0)
4875 char buf[SYMNMLEN + 1];
4877 (*_bfd_error_handler)
4878 (_("warning: %s: local symbol `%s' has no section"),
4879 bfd_archive_filename (abfd),
4880 _bfd_coff_internal_syment_name (abfd, syment, buf));
4883 return COFF_SYMBOL_LOCAL;
4890 Coff relocations are easily transformed into the internal BFD form
4893 Reading a coff relocation table is done in the following stages:
4895 o Read the entire coff relocation table into memory.
4897 o Process each relocation in turn; first swap it from the
4898 external to the internal form.
4900 o Turn the symbol referenced in the relocation's symbol index
4901 into a pointer into the canonical symbol table.
4902 This table is the same as the one returned by a call to
4903 @code{bfd_canonicalize_symtab}. The back end will call that
4904 routine and save the result if a canonicalization hasn't been done.
4906 o The reloc index is turned into a pointer to a howto
4907 structure, in a back end specific way. For instance, the 386
4908 and 960 use the @code{r_type} to directly produce an index
4909 into a howto table vector; the 88k subtracts a number from the
4910 @code{r_type} field and creates an addend field.
4915 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
4917 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
4918 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
4919 coffsym = (obj_symbols (abfd) \
4920 + (cache_ptr->sym_ptr_ptr - symbols)); \
4922 coffsym = coff_symbol_from (abfd, ptr); \
4923 if (coffsym != (coff_symbol_type *) NULL \
4924 && coffsym->native->u.syment.n_scnum == 0) \
4925 cache_ptr->addend = 0; \
4926 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
4927 && ptr->section != (asection *) NULL) \
4928 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
4930 cache_ptr->addend = 0; \
4935 coff_slurp_reloc_table (abfd, asect, symbols)
4940 RELOC *native_relocs;
4941 arelent *reloc_cache;
4946 if (asect->relocation)
4948 if (asect->reloc_count == 0)
4950 if (asect->flags & SEC_CONSTRUCTOR)
4952 if (!coff_slurp_symbol_table (abfd))
4954 amt = (bfd_size_type) bfd_coff_relsz (abfd) * asect->reloc_count;
4955 native_relocs = (RELOC *) buy_and_read (abfd, asect->rel_filepos, amt);
4956 amt = (bfd_size_type) asect->reloc_count * sizeof (arelent);
4957 reloc_cache = (arelent *) bfd_alloc (abfd, amt);
4959 if (reloc_cache == NULL)
4962 for (idx = 0; idx < asect->reloc_count; idx++)
4964 struct internal_reloc dst;
4965 struct external_reloc *src;
4966 #ifndef RELOC_PROCESSING
4970 cache_ptr = reloc_cache + idx;
4971 src = native_relocs + idx;
4973 coff_swap_reloc_in (abfd, src, &dst);
4975 #ifdef RELOC_PROCESSING
4976 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
4978 cache_ptr->address = dst.r_vaddr;
4980 if (dst.r_symndx != -1)
4982 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
4984 (*_bfd_error_handler)
4985 (_("%s: warning: illegal symbol index %ld in relocs"),
4986 bfd_archive_filename (abfd), dst.r_symndx);
4987 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
4992 cache_ptr->sym_ptr_ptr = (symbols
4993 + obj_convert (abfd)[dst.r_symndx]);
4994 ptr = *(cache_ptr->sym_ptr_ptr);
4999 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5003 /* The symbols definitions that we have read in have been
5004 relocated as if their sections started at 0. But the offsets
5005 refering to the symbols in the raw data have not been
5006 modified, so we have to have a negative addend to compensate.
5008 Note that symbols which used to be common must be left alone. */
5010 /* Calculate any reloc addend by looking at the symbol. */
5011 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
5013 cache_ptr->address -= asect->vma;
5014 /* !! cache_ptr->section = (asection *) NULL;*/
5016 /* Fill in the cache_ptr->howto field from dst.r_type. */
5017 RTYPE2HOWTO (cache_ptr, &dst);
5018 #endif /* RELOC_PROCESSING */
5020 if (cache_ptr->howto == NULL)
5022 (*_bfd_error_handler)
5023 (_("%s: illegal relocation type %d at address 0x%lx"),
5024 bfd_archive_filename (abfd), dst.r_type, (long) dst.r_vaddr);
5025 bfd_set_error (bfd_error_bad_value);
5030 asect->relocation = reloc_cache;
5034 #ifndef coff_rtype_to_howto
5037 /* Get the howto structure for a reloc. This is only used if the file
5038 including this one defines coff_relocate_section to be
5039 _bfd_coff_generic_relocate_section, so it is OK if it does not
5040 always work. It is the responsibility of the including file to
5041 make sure it is reasonable if it is needed. */
5043 static reloc_howto_type *coff_rtype_to_howto
5044 PARAMS ((bfd *, asection *, struct internal_reloc *,
5045 struct coff_link_hash_entry *, struct internal_syment *,
5049 static reloc_howto_type *
5050 coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
5051 bfd *abfd ATTRIBUTE_UNUSED;
5052 asection *sec ATTRIBUTE_UNUSED;
5053 struct internal_reloc *rel;
5054 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED;
5055 struct internal_syment *sym ATTRIBUTE_UNUSED;
5056 bfd_vma *addendp ATTRIBUTE_UNUSED;
5060 RTYPE2HOWTO (&genrel, rel);
5061 return genrel.howto;
5064 #else /* ! defined (RTYPE2HOWTO) */
5066 #define coff_rtype_to_howto NULL
5068 #endif /* ! defined (RTYPE2HOWTO) */
5069 #endif /* ! defined (coff_rtype_to_howto) */
5071 /* This is stupid. This function should be a boolean predicate. */
5073 coff_canonicalize_reloc (abfd, section, relptr, symbols)
5079 arelent *tblptr = section->relocation;
5080 unsigned int count = 0;
5082 if (section->flags & SEC_CONSTRUCTOR)
5084 /* This section has relocs made up by us, they are not in the
5085 file, so take them out of their chain and place them into
5086 the data area provided. */
5087 arelent_chain *chain = section->constructor_chain;
5089 for (count = 0; count < section->reloc_count; count++)
5091 *relptr++ = &chain->relent;
5092 chain = chain->next;
5097 if (! coff_slurp_reloc_table (abfd, section, symbols))
5100 tblptr = section->relocation;
5102 for (; count++ < section->reloc_count;)
5103 *relptr++ = tblptr++;
5106 return section->reloc_count;
5111 coff_sym_filepos (abfd)
5114 return obj_sym_filepos (abfd);
5118 #ifndef coff_reloc16_estimate
5119 #define coff_reloc16_estimate dummy_reloc16_estimate
5121 static int dummy_reloc16_estimate
5122 PARAMS ((bfd *, asection *, arelent *, unsigned int,
5123 struct bfd_link_info *));
5126 dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
5127 bfd *abfd ATTRIBUTE_UNUSED;
5128 asection *input_section ATTRIBUTE_UNUSED;
5129 arelent *reloc ATTRIBUTE_UNUSED;
5130 unsigned int shrink ATTRIBUTE_UNUSED;
5131 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
5139 #ifndef coff_reloc16_extra_cases
5141 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
5143 /* This works even if abort is not declared in any header file. */
5145 static void dummy_reloc16_extra_cases
5146 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
5147 bfd_byte *, unsigned int *, unsigned int *));
5150 dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
5152 bfd *abfd ATTRIBUTE_UNUSED;
5153 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
5154 struct bfd_link_order *link_order ATTRIBUTE_UNUSED;
5155 arelent *reloc ATTRIBUTE_UNUSED;
5156 bfd_byte *data ATTRIBUTE_UNUSED;
5157 unsigned int *src_ptr ATTRIBUTE_UNUSED;
5158 unsigned int *dst_ptr ATTRIBUTE_UNUSED;
5164 #ifndef coff_bfd_link_hash_table_free
5165 #define coff_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
5168 /* If coff_relocate_section is defined, we can use the optimized COFF
5169 backend linker. Otherwise we must continue to use the old linker. */
5170 #ifdef coff_relocate_section
5171 #ifndef coff_bfd_link_hash_table_create
5172 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
5174 #ifndef coff_bfd_link_add_symbols
5175 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
5177 #ifndef coff_bfd_final_link
5178 #define coff_bfd_final_link _bfd_coff_final_link
5180 #else /* ! defined (coff_relocate_section) */
5181 #define coff_relocate_section NULL
5182 #ifndef coff_bfd_link_hash_table_create
5183 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
5185 #ifndef coff_bfd_link_add_symbols
5186 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
5188 #define coff_bfd_final_link _bfd_generic_final_link
5189 #endif /* ! defined (coff_relocate_section) */
5191 #define coff_bfd_link_just_syms _bfd_generic_link_just_syms
5192 #define coff_bfd_link_split_section _bfd_generic_link_split_section
5194 #ifndef coff_start_final_link
5195 #define coff_start_final_link NULL
5198 #ifndef coff_adjust_symndx
5199 #define coff_adjust_symndx NULL
5202 #ifndef coff_link_add_one_symbol
5203 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5206 #ifndef coff_link_output_has_begun
5208 static bfd_boolean coff_link_output_has_begun
5209 PARAMS ((bfd *, struct coff_final_link_info *));
5212 coff_link_output_has_begun (abfd, info)
5214 struct coff_final_link_info * info ATTRIBUTE_UNUSED;
5216 return abfd->output_has_begun;
5220 #ifndef coff_final_link_postscript
5222 static bfd_boolean coff_final_link_postscript
5223 PARAMS ((bfd *, struct coff_final_link_info *));
5226 coff_final_link_postscript (abfd, pfinfo)
5227 bfd * abfd ATTRIBUTE_UNUSED;
5228 struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED;
5234 #ifndef coff_SWAP_aux_in
5235 #define coff_SWAP_aux_in coff_swap_aux_in
5237 #ifndef coff_SWAP_sym_in
5238 #define coff_SWAP_sym_in coff_swap_sym_in
5240 #ifndef coff_SWAP_lineno_in
5241 #define coff_SWAP_lineno_in coff_swap_lineno_in
5243 #ifndef coff_SWAP_aux_out
5244 #define coff_SWAP_aux_out coff_swap_aux_out
5246 #ifndef coff_SWAP_sym_out
5247 #define coff_SWAP_sym_out coff_swap_sym_out
5249 #ifndef coff_SWAP_lineno_out
5250 #define coff_SWAP_lineno_out coff_swap_lineno_out
5252 #ifndef coff_SWAP_reloc_out
5253 #define coff_SWAP_reloc_out coff_swap_reloc_out
5255 #ifndef coff_SWAP_filehdr_out
5256 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5258 #ifndef coff_SWAP_aouthdr_out
5259 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5261 #ifndef coff_SWAP_scnhdr_out
5262 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5264 #ifndef coff_SWAP_reloc_in
5265 #define coff_SWAP_reloc_in coff_swap_reloc_in
5267 #ifndef coff_SWAP_filehdr_in
5268 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5270 #ifndef coff_SWAP_aouthdr_in
5271 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5273 #ifndef coff_SWAP_scnhdr_in
5274 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5277 static const bfd_coff_backend_data bfd_coff_std_swap_table =
5279 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5280 coff_SWAP_aux_out, coff_SWAP_sym_out,
5281 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5282 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5283 coff_SWAP_scnhdr_out,
5284 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5285 #ifdef COFF_LONG_FILENAMES
5290 #ifdef COFF_LONG_SECTION_NAMES
5295 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5296 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5301 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5306 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5307 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5308 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5309 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5310 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5311 coff_classify_symbol, coff_compute_section_file_positions,
5312 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5313 coff_adjust_symndx, coff_link_add_one_symbol,
5314 coff_link_output_has_begun, coff_final_link_postscript
5317 #ifndef coff_close_and_cleanup
5318 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5321 #ifndef coff_bfd_free_cached_info
5322 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5325 #ifndef coff_get_section_contents
5326 #define coff_get_section_contents _bfd_generic_get_section_contents
5329 #ifndef coff_bfd_copy_private_symbol_data
5330 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5333 #ifndef coff_bfd_copy_private_section_data
5334 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5337 #ifndef coff_bfd_copy_private_bfd_data
5338 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5341 #ifndef coff_bfd_merge_private_bfd_data
5342 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5345 #ifndef coff_bfd_set_private_flags
5346 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5349 #ifndef coff_bfd_print_private_bfd_data
5350 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5353 #ifndef coff_bfd_is_local_label_name
5354 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5357 #ifndef coff_read_minisymbols
5358 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5361 #ifndef coff_minisymbol_to_symbol
5362 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5365 /* The reloc lookup routine must be supplied by each individual COFF
5367 #ifndef coff_bfd_reloc_type_lookup
5368 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5371 #ifndef coff_bfd_get_relocated_section_contents
5372 #define coff_bfd_get_relocated_section_contents \
5373 bfd_generic_get_relocated_section_contents
5376 #ifndef coff_bfd_relax_section
5377 #define coff_bfd_relax_section bfd_generic_relax_section
5380 #ifndef coff_bfd_gc_sections
5381 #define coff_bfd_gc_sections bfd_generic_gc_sections
5384 #ifndef coff_bfd_merge_sections
5385 #define coff_bfd_merge_sections bfd_generic_merge_sections
5388 #ifndef coff_bfd_discard_group
5389 #define coff_bfd_discard_group bfd_generic_discard_group
5392 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5393 const bfd_target VAR = \
5396 bfd_target_coff_flavour, \
5397 BFD_ENDIAN_BIG, /* data byte order is big */ \
5398 BFD_ENDIAN_BIG, /* header byte order is big */ \
5399 /* object flags */ \
5400 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5401 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5402 /* section flags */ \
5403 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5404 UNDER, /* leading symbol underscore */ \
5405 '/', /* ar_pad_char */ \
5406 15, /* ar_max_namelen */ \
5408 /* Data conversion functions. */ \
5409 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5410 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5411 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5413 /* Header conversion functions. */ \
5414 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5415 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5416 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5418 /* bfd_check_format */ \
5419 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5420 _bfd_dummy_target }, \
5421 /* bfd_set_format */ \
5422 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5423 /* bfd_write_contents */ \
5424 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5427 BFD_JUMP_TABLE_GENERIC (coff), \
5428 BFD_JUMP_TABLE_COPY (coff), \
5429 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5430 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5431 BFD_JUMP_TABLE_SYMBOLS (coff), \
5432 BFD_JUMP_TABLE_RELOCS (coff), \
5433 BFD_JUMP_TABLE_WRITE (coff), \
5434 BFD_JUMP_TABLE_LINK (coff), \
5435 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5442 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5443 const bfd_target VAR = \
5446 bfd_target_coff_flavour, \
5447 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5448 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5449 /* object flags */ \
5450 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5451 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5452 /* section flags */ \
5453 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5454 UNDER, /* leading symbol underscore */ \
5455 '/', /* ar_pad_char */ \
5456 15, /* ar_max_namelen */ \
5458 /* Data conversion functions. */ \
5459 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5460 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5461 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5462 /* Header conversion functions. */ \
5463 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5464 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5465 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5466 /* bfd_check_format */ \
5467 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5468 _bfd_dummy_target }, \
5469 /* bfd_set_format */ \
5470 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5471 /* bfd_write_contents */ \
5472 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5475 BFD_JUMP_TABLE_GENERIC (coff), \
5476 BFD_JUMP_TABLE_COPY (coff), \
5477 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5478 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5479 BFD_JUMP_TABLE_SYMBOLS (coff), \
5480 BFD_JUMP_TABLE_RELOCS (coff), \
5481 BFD_JUMP_TABLE_WRITE (coff), \
5482 BFD_JUMP_TABLE_LINK (coff), \
5483 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \