1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 1998
3 Free Software Foundation, Inc.
4 Written by Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 Most of this hacked by Steve Chamberlain,
31 BFD supports a number of different flavours of coff format.
32 The major differences between formats are the sizes and
33 alignments of fields in structures on disk, and the occasional
36 Coff in all its varieties is implemented with a few common
37 files and a number of implementation specific files. For
38 example, The 88k bcs coff format is implemented in the file
39 @file{coff-m88k.c}. This file @code{#include}s
40 @file{coff/m88k.h} which defines the external structure of the
41 coff format for the 88k, and @file{coff/internal.h} which
42 defines the internal structure. @file{coff-m88k.c} also
43 defines the relocations used by the 88k format
46 The Intel i960 processor version of coff is implemented in
47 @file{coff-i960.c}. This file has the same structure as
48 @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
49 rather than @file{coff-m88k.h}.
52 Porting to a new version of coff
54 The recommended method is to select from the existing
55 implementations the version of coff which is most like the one
56 you want to use. For example, we'll say that i386 coff is
57 the one you select, and that your coff flavour is called foo.
58 Copy @file{i386coff.c} to @file{foocoff.c}, copy
59 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
60 and add the lines to @file{targets.c} and @file{Makefile.in}
61 so that your new back end is used. Alter the shapes of the
62 structures in @file{../include/coff/foo.h} so that they match
63 what you need. You will probably also have to add
64 @code{#ifdef}s to the code in @file{coff/internal.h} and
65 @file{coffcode.h} if your version of coff is too wild.
67 You can verify that your new BFD backend works quite simply by
68 building @file{objdump} from the @file{binutils} directory,
69 and making sure that its version of what's going on and your
70 host system's idea (assuming it has the pretty standard coff
71 dump utility, usually called @code{att-dump} or just
72 @code{dump}) are the same. Then clean up your code, and send
73 what you've done to Cygnus. Then your stuff will be in the
74 next release, and you won't have to keep integrating it.
77 How the coff backend works
82 The Coff backend is split into generic routines that are
83 applicable to any Coff target and routines that are specific
84 to a particular target. The target-specific routines are
85 further split into ones which are basically the same for all
86 Coff targets except that they use the external symbol format
87 or use different values for certain constants.
89 The generic routines are in @file{coffgen.c}. These routines
90 work for any Coff target. They use some hooks into the target
91 specific code; the hooks are in a @code{bfd_coff_backend_data}
92 structure, one of which exists for each target.
94 The essentially similar target-specific routines are in
95 @file{coffcode.h}. This header file includes executable C code.
96 The various Coff targets first include the appropriate Coff
97 header file, make any special defines that are needed, and
98 then include @file{coffcode.h}.
100 Some of the Coff targets then also have additional routines in
101 the target source file itself.
103 For example, @file{coff-i960.c} includes
104 @file{coff/internal.h} and @file{coff/i960.h}. It then
105 defines a few constants, such as @code{I960}, and includes
106 @file{coffcode.h}. Since the i960 has complex relocation
107 types, @file{coff-i960.c} also includes some code to
108 manipulate the i960 relocs. This code is not in
109 @file{coffcode.h} because it would not be used by any other
115 Each flavour of coff supported in BFD has its own header file
116 describing the external layout of the structures. There is also
117 an internal description of the coff layout, in
118 @file{coff/internal.h}. A major function of the
119 coff backend is swapping the bytes and twiddling the bits to
120 translate the external form of the structures into the normal
121 internal form. This is all performed in the
122 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
123 elements are different sizes between different versions of
124 coff; it is the duty of the coff version specific include file
125 to override the definitions of various packing routines in
126 @file{coffcode.h}. E.g., the size of line number entry in coff is
127 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
128 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
129 correct one. No doubt, some day someone will find a version of
130 coff which has a varying field size not catered to at the
131 moment. To port BFD, that person will have to add more @code{#defines}.
132 Three of the bit twiddling routines are exported to
133 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
134 and @code{coff_swap_linno_in}. @code{GDB} reads the symbol
135 table on its own, but uses BFD to fix things up. More of the
136 bit twiddlers are exported for @code{gas};
137 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
138 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
139 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
140 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
141 of all the symbol table and reloc drudgery itself, thereby
142 saving the internal BFD overhead, but uses BFD to swap things
143 on the way out, making cross ports much safer. Doing so also
144 allows BFD (and thus the linker) to use the same header files
145 as @code{gas}, which makes one avenue to disaster disappear.
150 The simple canonical form for symbols used by BFD is not rich
151 enough to keep all the information available in a coff symbol
152 table. The back end gets around this problem by keeping the original
153 symbol table around, "behind the scenes".
155 When a symbol table is requested (through a call to
156 @code{bfd_canonicalize_symtab}), a request gets through to
157 @code{coff_get_normalized_symtab}. This reads the symbol table from
158 the coff file and swaps all the structures inside into the
159 internal form. It also fixes up all the pointers in the table
160 (represented in the file by offsets from the first symbol in
161 the table) into physical pointers to elements in the new
162 internal table. This involves some work since the meanings of
163 fields change depending upon context: a field that is a
164 pointer to another structure in the symbol table at one moment
165 may be the size in bytes of a structure at the next. Another
166 pass is made over the table. All symbols which mark file names
167 (<<C_FILE>> symbols) are modified so that the internal
168 string points to the value in the auxent (the real filename)
169 rather than the normal text associated with the symbol
172 At this time the symbol names are moved around. Coff stores
173 all symbols less than nine characters long physically
174 within the symbol table; longer strings are kept at the end of
175 the file in the string table. This pass moves all strings
176 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 hierachy 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
252 . {* Remembers the offset from the first symbol in the file for
253 . this symbol. Generated by coff_renumber_symbols. *}
254 .unsigned int offset;
256 . {* Should the value of this symbol be renumbered. Used for
257 . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
258 .unsigned int fix_value : 1;
260 . {* Should the tag field of this symbol be renumbered.
261 . Created by coff_pointerize_aux. *}
262 .unsigned int fix_tag : 1;
264 . {* Should the endidx field of this symbol be renumbered.
265 . Created by coff_pointerize_aux. *}
266 .unsigned int fix_end : 1;
268 . {* Should the x_csect.x_scnlen field be renumbered.
269 . Created by coff_pointerize_aux. *}
270 .unsigned int fix_scnlen : 1;
272 . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
273 . index into the line number entries. Set by
274 . coff_slurp_symbol_table. *}
275 .unsigned int fix_line : 1;
277 . {* The container for the symbol structure as read and translated
281 . union internal_auxent auxent;
282 . struct internal_syment syment;
284 .} combined_entry_type;
287 .{* Each canonical asymbol really looks like this: *}
289 .typedef struct coff_symbol_struct
291 . {* The actual symbol which the rest of BFD works with *}
294 . {* A pointer to the hidden information for this symbol *}
295 .combined_entry_type *native;
297 . {* A pointer to the linenumber information for this symbol *}
298 .struct lineno_cache_entry *lineno;
300 . {* Have the line numbers been relocated yet ? *}
301 .boolean done_lineno;
310 #include "coffswap.h"
313 #define STRING_SIZE_SIZE (4)
315 static long sec_to_styp_flags PARAMS ((const char *, flagword));
316 static flagword styp_to_sec_flags PARAMS ((bfd *, PTR, const char *));
317 static boolean coff_bad_format_hook PARAMS ((bfd *, PTR));
318 static boolean coff_new_section_hook PARAMS ((bfd *, asection *));
319 static boolean coff_set_arch_mach_hook PARAMS ((bfd *, PTR));
320 static boolean coff_write_relocs PARAMS ((bfd *, int));
321 static boolean coff_set_flags
322 PARAMS ((bfd *, unsigned int *, unsigned short *));
323 static boolean coff_set_arch_mach
324 PARAMS ((bfd *, enum bfd_architecture, unsigned long));
325 static boolean coff_compute_section_file_positions PARAMS ((bfd *));
326 static boolean coff_write_object_contents PARAMS ((bfd *));
327 static boolean coff_set_section_contents
328 PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
329 static PTR buy_and_read PARAMS ((bfd *, file_ptr, int, size_t));
330 static boolean coff_slurp_line_table PARAMS ((bfd *, asection *));
331 static boolean coff_slurp_symbol_table PARAMS ((bfd *));
332 static boolean coff_slurp_reloc_table PARAMS ((bfd *, asection *, asymbol **));
333 static long coff_canonicalize_reloc
334 PARAMS ((bfd *, asection *, arelent **, asymbol **));
335 #ifndef coff_mkobject_hook
336 static PTR coff_mkobject_hook PARAMS ((bfd *, PTR, PTR));
339 /* void warning(); */
342 * Return a word with STYP_* (scnhdr.s_flags) flags set to represent the
343 * incoming SEC_* flags. The inverse of this function is styp_to_sec_flags().
344 * NOTE: If you add to/change this routine, you should mirror the changes
345 * in styp_to_sec_flags().
348 sec_to_styp_flags (sec_name, sec_flags)
349 CONST char *sec_name;
354 if (!strcmp (sec_name, _TEXT))
356 styp_flags = STYP_TEXT;
358 else if (!strcmp (sec_name, _DATA))
360 styp_flags = STYP_DATA;
362 else if (!strcmp (sec_name, _BSS))
364 styp_flags = STYP_BSS;
367 else if (!strcmp (sec_name, _COMMENT))
369 styp_flags = STYP_INFO;
370 #endif /* _COMMENT */
373 else if (!strcmp (sec_name, _LIB))
375 styp_flags = STYP_LIB;
379 else if (!strcmp (sec_name, _LIT))
381 styp_flags = STYP_LIT;
384 else if (!strcmp (sec_name, ".debug"))
387 styp_flags = STYP_DEBUG;
389 styp_flags = STYP_INFO;
392 else if (!strncmp (sec_name, ".stab", 5))
394 styp_flags = STYP_INFO;
397 else if (!strcmp (sec_name, ".edata"))
399 styp_flags = STYP_DATA;
403 else if (!strcmp (sec_name, _PAD))
405 styp_flags = STYP_PAD;
407 else if (!strcmp (sec_name, _LOADER))
409 styp_flags = STYP_LOADER;
412 /* Try and figure out what it should be */
413 else if (sec_flags & SEC_CODE)
415 styp_flags = STYP_TEXT;
417 else if (sec_flags & SEC_DATA)
419 styp_flags = STYP_DATA;
421 else if (sec_flags & SEC_READONLY)
423 #ifdef STYP_LIT /* 29k readonly text/data section */
424 styp_flags = STYP_LIT;
426 styp_flags = STYP_TEXT;
427 #endif /* STYP_LIT */
429 else if (sec_flags & SEC_LOAD)
431 styp_flags = STYP_TEXT;
433 else if (sec_flags & SEC_ALLOC)
435 styp_flags = STYP_BSS;
439 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
440 styp_flags |= STYP_NOLOAD;
444 if (sec_flags & SEC_LINK_ONCE)
445 styp_flags |= IMAGE_SCN_LNK_COMDAT;
451 * Return a word with SEC_* flags set to represent the incoming
452 * STYP_* flags (from scnhdr.s_flags). The inverse of this
453 * function is sec_to_styp_flags().
454 * NOTE: If you add to/change this routine, you should mirror the changes
455 * in sec_to_styp_flags().
458 styp_to_sec_flags (abfd, hdr, name)
463 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
464 long styp_flags = internal_s->s_flags;
465 flagword sec_flags = 0;
468 if (styp_flags & STYP_NOLOAD)
470 sec_flags |= SEC_NEVER_LOAD;
472 #endif /* STYP_NOLOAD */
474 /* For 386 COFF, at least, an unloadable text or data section is
475 actually a shared library section. */
476 if (styp_flags & STYP_TEXT)
478 if (sec_flags & SEC_NEVER_LOAD)
479 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
481 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
483 else if (styp_flags & STYP_DATA)
485 if (sec_flags & SEC_NEVER_LOAD)
486 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
488 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
490 else if (styp_flags & STYP_BSS)
492 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
493 if (sec_flags & SEC_NEVER_LOAD)
494 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
497 sec_flags |= SEC_ALLOC;
499 else if (styp_flags & STYP_INFO)
501 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
502 defined. coff_compute_section_file_positions uses
503 COFF_PAGE_SIZE to ensure that the low order bits of the
504 section VMA and the file offset match. If we don't know
505 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
506 and demand page loading of the file will fail. */
507 #if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS)
508 sec_flags |= SEC_DEBUGGING;
511 else if (styp_flags & STYP_PAD)
515 else if (strcmp (name, _TEXT) == 0)
517 if (sec_flags & SEC_NEVER_LOAD)
518 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
520 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
522 else if (strcmp (name, _DATA) == 0)
524 if (sec_flags & SEC_NEVER_LOAD)
525 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
527 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
529 else if (strcmp (name, _BSS) == 0)
531 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
532 if (sec_flags & SEC_NEVER_LOAD)
533 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
536 sec_flags |= SEC_ALLOC;
538 else if (strcmp (name, ".debug") == 0
540 || strcmp (name, _COMMENT) == 0
542 || strncmp (name, ".stab", 5) == 0)
544 #ifdef COFF_PAGE_SIZE
545 sec_flags |= SEC_DEBUGGING;
549 else if (strcmp (name, _LIB) == 0)
553 else if (strcmp (name, _LIT) == 0)
555 sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY;
560 sec_flags |= SEC_ALLOC | SEC_LOAD;
563 #ifdef STYP_LIT /* A29k readonly text/data section type */
564 if ((styp_flags & STYP_LIT) == STYP_LIT)
566 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
568 #endif /* STYP_LIT */
569 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
570 if (styp_flags & STYP_OTHER_LOAD)
572 sec_flags = (SEC_LOAD | SEC_ALLOC);
574 #endif /* STYP_SDATA */
577 if (styp_flags & IMAGE_SCN_LNK_REMOVE)
578 sec_flags |= SEC_EXCLUDE;
580 if (styp_flags & IMAGE_SCN_LNK_COMDAT)
582 sec_flags |= SEC_LINK_ONCE;
584 /* Unfortunately, the PE format stores essential information in
585 the symbol table, of all places. We need to extract that
586 information now, so that objdump and the linker will know how
587 to handle the section without worrying about the symbols. We
588 can't call slurp_symtab, because the linker doesn't want the
591 if (_bfd_coff_get_external_symbols (abfd))
593 bfd_byte *esym, *esymend;
595 esym = (bfd_byte *) obj_coff_external_syms (abfd);
596 esymend = esym + obj_raw_syment_count (abfd) * SYMESZ;
598 while (esym < esymend)
600 struct internal_syment isym;
602 bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &isym);
604 if (sizeof (internal_s->s_name) > SYMNMLEN)
606 /* This case implies that the matching symbol name
607 will be in the string table. */
611 if (isym.n_sclass == C_STAT
612 && isym.n_type == T_NULL
613 && isym.n_numaux == 1)
615 char buf[SYMNMLEN + 1];
618 symname = _bfd_coff_internal_syment_name (abfd, &isym, buf);
622 if (strcmp (name, symname) == 0)
624 union internal_auxent aux;
626 /* This is the section symbol. */
628 bfd_coff_swap_aux_in (abfd, (PTR) (esym + SYMESZ),
629 isym.n_type, isym.n_sclass,
630 0, isym.n_numaux, (PTR) &aux);
632 switch (aux.x_scn.x_comdat)
634 case IMAGE_COMDAT_SELECT_NODUPLICATES:
635 sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
639 case IMAGE_COMDAT_SELECT_ANY:
640 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
643 case IMAGE_COMDAT_SELECT_SAME_SIZE:
644 sec_flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
647 case IMAGE_COMDAT_SELECT_EXACT_MATCH:
648 sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
651 case IMAGE_COMDAT_SELECT_ASSOCIATIVE:
652 /* FIXME: This is not currently implemented. */
653 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
661 esym += (isym.n_numaux + 1) * SYMESZ;
670 #define get_index(symbol) ((symbol)->udata.i)
674 bfd_coff_backend_data
678 Special entry points for gdb to swap in coff symbol table parts:
681 . void (*_bfd_coff_swap_aux_in) PARAMS ((
690 . void (*_bfd_coff_swap_sym_in) PARAMS ((
695 . void (*_bfd_coff_swap_lineno_in) PARAMS ((
701 Special entry points for gas to swap out coff parts:
703 . unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
712 . unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
717 . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
722 . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
727 . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
732 . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
737 . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
743 Special entry points for generic COFF routines to call target
744 dependent COFF routines:
746 . unsigned int _bfd_filhsz;
747 . unsigned int _bfd_aoutsz;
748 . unsigned int _bfd_scnhsz;
749 . unsigned int _bfd_symesz;
750 . unsigned int _bfd_auxesz;
751 . unsigned int _bfd_relsz;
752 . unsigned int _bfd_linesz;
753 . boolean _bfd_coff_long_filenames;
754 . boolean _bfd_coff_long_section_names;
755 . unsigned int _bfd_coff_default_section_alignment_power;
756 . void (*_bfd_coff_swap_filehdr_in) PARAMS ((
760 . void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
764 . void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
768 . void (*_bfd_coff_swap_reloc_in) PARAMS ((
772 . boolean (*_bfd_coff_bad_format_hook) PARAMS ((
774 . PTR internal_filehdr));
775 . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
777 . PTR internal_filehdr));
778 . PTR (*_bfd_coff_mkobject_hook) PARAMS ((
780 . PTR internal_filehdr,
781 . PTR internal_aouthdr));
782 . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
784 . PTR internal_scnhdr,
785 . const char *name));
786 . void (*_bfd_set_alignment_hook) PARAMS ((
789 . PTR internal_scnhdr));
790 . boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
792 . boolean (*_bfd_coff_symname_in_debug) PARAMS ((
794 . struct internal_syment *sym));
795 . boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
797 . combined_entry_type *table_base,
798 . combined_entry_type *symbol,
799 . unsigned int indaux,
800 . combined_entry_type *aux));
801 . boolean (*_bfd_coff_print_aux) PARAMS ((
804 . combined_entry_type *table_base,
805 . combined_entry_type *symbol,
806 . combined_entry_type *aux,
807 . unsigned int indaux));
808 . void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
810 . struct bfd_link_info *link_info,
811 . struct bfd_link_order *link_order,
814 . unsigned int *src_ptr,
815 . unsigned int *dst_ptr));
816 . int (*_bfd_coff_reloc16_estimate) PARAMS ((
818 . asection *input_section,
820 . unsigned int shrink,
821 . struct bfd_link_info *link_info));
822 . boolean (*_bfd_coff_sym_is_global) PARAMS ((
824 . struct internal_syment *));
825 . boolean (*_bfd_coff_compute_section_file_positions) PARAMS ((
827 . boolean (*_bfd_coff_start_final_link) PARAMS ((
829 . struct bfd_link_info *info));
830 . boolean (*_bfd_coff_relocate_section) PARAMS ((
832 . struct bfd_link_info *info,
834 . asection *input_section,
835 . bfd_byte *contents,
836 . struct internal_reloc *relocs,
837 . struct internal_syment *syms,
838 . asection **sections));
839 . reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
842 . struct internal_reloc *rel,
843 . struct coff_link_hash_entry *h,
844 . struct internal_syment *sym,
845 . bfd_vma *addendp));
846 . boolean (*_bfd_coff_adjust_symndx) PARAMS ((
848 . struct bfd_link_info *info,
851 . struct internal_reloc *reloc,
852 . boolean *adjustedp));
853 . boolean (*_bfd_coff_link_add_one_symbol) PARAMS ((
854 . struct bfd_link_info *info,
860 . const char *string,
863 . struct bfd_link_hash_entry **hashp));
865 . boolean (*_bfd_coff_link_output_has_begun) PARAMS ((
867 . struct coff_final_link_info * pfinfo));
868 . boolean (*_bfd_coff_final_link_postscript) PARAMS ((
870 . struct coff_final_link_info * pfinfo));
872 .} bfd_coff_backend_data;
874 .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
876 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
877 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
879 .#define bfd_coff_swap_sym_in(a,e,i) \
880 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
882 .#define bfd_coff_swap_lineno_in(a,e,i) \
883 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
885 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
886 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
888 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
889 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
891 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
892 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
894 .#define bfd_coff_swap_sym_out(abfd, i,o) \
895 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
897 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
898 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
900 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
901 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
903 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
904 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
906 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
907 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
908 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
909 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
910 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
911 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
912 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
913 .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
914 .#define bfd_coff_long_section_names(abfd) \
915 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
916 .#define bfd_coff_default_section_alignment_power(abfd) \
917 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
918 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
919 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
921 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
922 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
924 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
925 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
927 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
928 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
930 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
931 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
933 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
934 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
935 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
936 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
938 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
939 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
941 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
942 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
944 .#define bfd_coff_slurp_symbol_table(abfd)\
945 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
947 .#define bfd_coff_symname_in_debug(abfd, sym)\
948 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
950 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
951 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
952 . (abfd, file, base, symbol, aux, indaux))
954 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
955 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
956 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
958 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
959 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
960 . (abfd, section, reloc, shrink, link_info))
962 .#define bfd_coff_sym_is_global(abfd, sym)\
963 . ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
966 .#define bfd_coff_compute_section_file_positions(abfd)\
967 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
970 .#define bfd_coff_start_final_link(obfd, info)\
971 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
973 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
974 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
975 . (obfd, info, ibfd, o, con, rel, isyms, secs))
976 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
977 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
978 . (abfd, sec, rel, h, sym, addendp))
979 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
980 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
981 . (obfd, info, ibfd, sec, rel, adjustedp))
982 .#define bfd_coff_link_add_one_symbol(info,abfd,name,flags,section,value,string,cp,coll,hashp)\
983 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
984 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
986 .#define bfd_coff_link_output_has_begun(a,p) \
987 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
988 .#define bfd_coff_final_link_postscript(a,p) \
989 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
993 /* See whether the magic number matches. */
996 coff_bad_format_hook (abfd, filehdr)
1000 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1002 if (BADMAG (*internal_f))
1005 /* if the optional header is NULL or not the correct size then
1006 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1007 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1008 optional header is of a different size.
1010 But the mips keeps extra stuff in it's opthdr, so dont check
1014 #if defined(M88) || defined(I960)
1015 if (internal_f->f_opthdr != 0 && AOUTSZ != internal_f->f_opthdr)
1023 initialize a section structure with information peculiar to this
1024 particular implementation of coff
1028 coff_new_section_hook (abfd, section)
1032 combined_entry_type *native;
1034 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1037 if (xcoff_data (abfd)->text_align_power != 0
1038 && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
1039 section->alignment_power = xcoff_data (abfd)->text_align_power;
1040 if (xcoff_data (abfd)->data_align_power != 0
1041 && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
1042 section->alignment_power = xcoff_data (abfd)->data_align_power;
1045 /* Allocate aux records for section symbols, to store size and
1048 @@ The 10 is a guess at a plausible maximum number of aux entries
1049 (but shouldn't be a constant). */
1050 native = ((combined_entry_type *)
1051 bfd_zalloc (abfd, sizeof (combined_entry_type) * 10));
1055 /* We don't need to set up n_name, n_value, or n_scnum in the native
1056 symbol information, since they'll be overriden by the BFD symbol
1057 anyhow. However, we do need to set the type and storage class,
1058 in case this symbol winds up getting written out. The value 0
1059 for n_numaux is already correct. */
1061 native->u.syment.n_type = T_NULL;
1062 native->u.syment.n_sclass = C_STAT;
1064 coffsymbol (section->symbol)->native = native;
1066 /* The .stab section must be aligned to 2**2 at most, because
1067 otherwise there may be gaps in the section which gdb will not
1068 know how to interpret. Examining the section name is a hack, but
1069 that is also how gdb locates the section.
1070 We need to handle the .ctors and .dtors sections similarly, to
1071 avoid introducing null words in the tables. */
1072 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER > 2
1073 && (strncmp (section->name, ".stab", 5) == 0
1074 || strcmp (section->name, ".ctors") == 0
1075 || strcmp (section->name, ".dtors") == 0))
1076 section->alignment_power = 2;
1078 /* Similarly, the .stabstr section must be aligned to 2**0 at most. */
1079 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER > 0
1080 && strncmp (section->name, ".stabstr", 8) == 0)
1081 section->alignment_power = 0;
1086 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1088 /* Set the alignment of a BFD section. */
1090 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1093 coff_set_alignment_hook (abfd, section, scnhdr)
1098 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1102 /* Extract ALIGN from 2**ALIGN stored in section header */
1103 for (i = 0; i < 32; i++)
1104 if ((1 << i) >= hdr->s_align)
1108 /* TI tools hijack bits 8-11 for the alignment */
1109 i = (hdr->s_flags >> 8) & 0xF ;
1111 section->alignment_power = i;
1114 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1117 /* a couple of macros to help setting the alignment power field */
1118 #define ALIGN_SET(field,x,y) \
1119 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
1121 section->alignment_power = y;\
1124 #define ELIFALIGN_SET(field,x,y) \
1125 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
1127 section->alignment_power = y;\
1130 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1133 coff_set_alignment_hook (abfd, section, scnhdr)
1138 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1140 ALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_64BYTES, 6)
1141 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_32BYTES, 5)
1142 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_16BYTES, 4)
1143 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_8BYTES, 3)
1144 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_4BYTES, 2)
1145 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_2BYTES, 1)
1146 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_1BYTES, 0)
1148 #ifdef POWERPC_LE_PE
1149 if (strcmp (section->name, ".idata$2") == 0)
1151 section->alignment_power = 0;
1153 else if (strcmp (section->name, ".idata$3") == 0)
1155 section->alignment_power = 0;
1157 else if (strcmp (section->name, ".idata$4") == 0)
1159 section->alignment_power = 2;
1161 else if (strcmp (section->name, ".idata$5") == 0)
1163 section->alignment_power = 2;
1165 else if (strcmp (section->name, ".idata$6") == 0)
1167 section->alignment_power = 1;
1169 else if (strcmp (section->name, ".reloc") == 0)
1171 section->alignment_power = 1;
1173 else if (strncmp (section->name, ".stab", 5) == 0)
1175 section->alignment_power = 2;
1179 #ifdef COFF_IMAGE_WITH_PE
1180 /* In a PE image file, the s_paddr field holds the virtual size of a
1181 section, while the s_size field holds the raw size. */
1182 if (hdr->s_paddr != 0)
1184 if (coff_section_data (abfd, section) == NULL)
1186 section->used_by_bfd =
1187 (PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata));
1188 if (section->used_by_bfd == NULL)
1190 /* FIXME: Return error. */
1194 if (pei_section_data (abfd, section) == NULL)
1196 coff_section_data (abfd, section)->tdata =
1197 (PTR) bfd_zalloc (abfd, sizeof (struct pei_section_tdata));
1198 if (coff_section_data (abfd, section)->tdata == NULL)
1200 /* FIXME: Return error. */
1204 pei_section_data (abfd, section)->virt_size = hdr->s_paddr;
1210 #undef ELIFALIGN_SET
1212 #else /* ! COFF_WITH_PE */
1215 /* We grossly abuse this function to handle XCOFF overflow headers.
1216 When we see one, we correct the reloc and line number counts in the
1217 real header, and remove the section we just created. */
1219 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1222 coff_set_alignment_hook (abfd, section, scnhdr)
1227 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1231 if ((hdr->s_flags & STYP_OVRFLO) == 0)
1234 real_sec = coff_section_from_bfd_index (abfd, hdr->s_nreloc);
1235 if (real_sec == NULL)
1238 real_sec->reloc_count = hdr->s_paddr;
1239 real_sec->lineno_count = hdr->s_vaddr;
1241 for (ps = &abfd->sections; *ps != NULL; ps = &(*ps)->next)
1246 --abfd->section_count;
1252 #else /* ! RS6000COFF_C */
1254 #define coff_set_alignment_hook \
1255 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1257 #endif /* ! RS6000COFF_C */
1258 #endif /* ! COFF_WITH_PE */
1259 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1261 #ifndef coff_mkobject
1263 static boolean coff_mkobject PARAMS ((bfd *));
1266 coff_mkobject (abfd)
1269 coff_data_type *coff;
1271 abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, sizeof (coff_data_type));
1272 if (abfd->tdata.coff_obj_data == 0)
1274 coff = coff_data (abfd);
1275 coff->symbols = (coff_symbol_type *) NULL;
1276 coff->conversion_table = (unsigned int *) NULL;
1277 coff->raw_syments = (struct coff_ptr_struct *) NULL;
1278 coff->relocbase = 0;
1279 coff->local_toc_sym_map = 0;
1281 /* make_abs_section(abfd);*/
1287 /* Create the COFF backend specific information. */
1288 #ifndef coff_mkobject_hook
1290 coff_mkobject_hook (abfd, filehdr, aouthdr)
1295 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1296 coff_data_type *coff;
1298 if (coff_mkobject (abfd) == false)
1301 coff = coff_data (abfd);
1303 coff->sym_filepos = internal_f->f_symptr;
1305 /* These members communicate important constants about the symbol
1306 table to GDB's symbol-reading code. These `constants'
1307 unfortunately vary among coff implementations... */
1308 coff->local_n_btmask = N_BTMASK;
1309 coff->local_n_btshft = N_BTSHFT;
1310 coff->local_n_tmask = N_TMASK;
1311 coff->local_n_tshift = N_TSHIFT;
1312 coff->local_symesz = SYMESZ;
1313 coff->local_auxesz = AUXESZ;
1314 coff->local_linesz = LINESZ;
1316 obj_raw_syment_count (abfd) =
1317 obj_conv_table_size (abfd) =
1318 internal_f->f_nsyms;
1321 if ((internal_f->f_flags & F_SHROBJ) != 0)
1322 abfd->flags |= DYNAMIC;
1323 if (aouthdr != NULL && internal_f->f_opthdr >= AOUTSZ)
1325 struct internal_aouthdr *internal_a =
1326 (struct internal_aouthdr *) aouthdr;
1327 struct xcoff_tdata *xcoff;
1329 xcoff = xcoff_data (abfd);
1330 xcoff->full_aouthdr = true;
1331 xcoff->toc = internal_a->o_toc;
1332 xcoff->sntoc = internal_a->o_sntoc;
1333 xcoff->snentry = internal_a->o_snentry;
1334 xcoff->text_align_power = internal_a->o_algntext;
1335 xcoff->data_align_power = internal_a->o_algndata;
1336 xcoff->modtype = internal_a->o_modtype;
1337 xcoff->cputype = internal_a->o_cputype;
1338 xcoff->maxdata = internal_a->o_maxdata;
1339 xcoff->maxstack = internal_a->o_maxstack;
1344 /* Set the flags field from the COFF header read in */
1345 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
1353 /* Determine the machine architecture and type. FIXME: This is target
1354 dependent because the magic numbers are defined in the target
1355 dependent header files. But there is no particular need for this.
1356 If the magic numbers were moved to a separate file, this function
1357 would be target independent and would also be much more successful
1358 at linking together COFF files for different architectures. */
1361 coff_set_arch_mach_hook (abfd, filehdr)
1366 enum bfd_architecture arch;
1367 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1370 switch (internal_f->f_magic)
1374 arch = bfd_arch_powerpc;
1375 machine = 0; /* what does this mean? (krk) */
1381 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */
1382 case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */
1383 arch = bfd_arch_i386;
1387 #ifdef A29K_MAGIC_BIG
1388 case A29K_MAGIC_BIG:
1389 case A29K_MAGIC_LITTLE:
1390 arch = bfd_arch_a29k;
1396 arch = bfd_arch_arm;
1397 switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK)
1399 case F_ARM_2: machine = bfd_mach_arm_2; break;
1400 case F_ARM_3: machine = bfd_mach_arm_3; break;
1402 case F_ARM_4: machine = bfd_mach_arm_4; break;
1403 case F_ARM_4T: machine = bfd_mach_arm_4T; break;
1410 #ifdef MC68KBCSMAGIC
1413 #ifdef APOLLOM68KMAGIC
1414 case APOLLOM68KMAGIC:
1416 #ifdef LYNXCOFFMAGIC
1419 arch = bfd_arch_m68k;
1420 machine = bfd_mach_m68020;
1427 arch = bfd_arch_m88k;
1433 arch = bfd_arch_z8k;
1434 switch (internal_f->f_flags & F_MACHMASK)
1437 machine = bfd_mach_z8001;
1440 machine = bfd_mach_z8002;
1449 arch = bfd_arch_i860;
1456 arch = bfd_arch_i960;
1457 switch (F_I960TYPE & internal_f->f_flags)
1461 machine = bfd_mach_i960_core;
1464 machine = bfd_mach_i960_kb_sb;
1467 machine = bfd_mach_i960_mc;
1470 machine = bfd_mach_i960_xa;
1473 machine = bfd_mach_i960_ca;
1476 machine = bfd_mach_i960_ka_sa;
1479 machine = bfd_mach_i960_jx;
1482 machine = bfd_mach_i960_hx;
1496 if (xcoff_data (abfd)->cputype != -1)
1497 cputype = xcoff_data (abfd)->cputype & 0xff;
1500 /* We did not get a value from the a.out header. If the
1501 file has not been stripped, we may be able to get the
1502 architecture information from the first symbol, if it
1503 is a .file symbol. */
1504 if (obj_raw_syment_count (abfd) == 0)
1508 bfd_byte buf[SYMESZ];
1509 struct internal_syment sym;
1511 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1512 || bfd_read (buf, 1, SYMESZ, abfd) != SYMESZ)
1514 coff_swap_sym_in (abfd, (PTR) buf, (PTR) &sym);
1515 if (sym.n_sclass == C_FILE)
1516 cputype = sym.n_type & 0xff;
1522 /* FIXME: We don't handle all cases here. */
1528 /* PowerPC Macs use the same magic numbers as RS/6000
1529 (because that's how they were bootstrapped originally),
1530 but they are always PowerPC architecture. */
1531 arch = bfd_arch_powerpc;
1534 arch = bfd_arch_rs6000;
1536 #endif /* POWERMAC */
1540 arch = bfd_arch_powerpc;
1543 case 2: /* 64 bit PowerPC */
1544 arch = bfd_arch_powerpc;
1548 arch = bfd_arch_powerpc;
1552 arch = bfd_arch_rs6000;
1562 arch = bfd_arch_we32k;
1569 arch = bfd_arch_h8300;
1570 machine = bfd_mach_h8300;
1571 /* !! FIXME this probably isn't the right place for this */
1572 abfd->flags |= BFD_IS_RELAXABLE;
1578 arch = bfd_arch_h8300;
1579 machine = bfd_mach_h8300h;
1580 /* !! FIXME this probably isn't the right place for this */
1581 abfd->flags |= BFD_IS_RELAXABLE;
1587 arch = bfd_arch_h8300;
1588 machine = bfd_mach_h8300s;
1589 /* !! FIXME this probably isn't the right place for this */
1590 abfd->flags |= BFD_IS_RELAXABLE;
1594 #ifdef SH_ARCH_MAGIC_BIG
1595 case SH_ARCH_MAGIC_BIG:
1596 case SH_ARCH_MAGIC_LITTLE:
1604 arch = bfd_arch_h8500;
1611 #ifdef LYNXCOFFMAGIC
1614 arch = bfd_arch_sparc;
1621 arch = bfd_arch_tic30;
1625 #ifdef TIC80_ARCH_MAGIC
1626 case TIC80_ARCH_MAGIC:
1627 arch = bfd_arch_tic80;
1633 arch = bfd_arch_mcore;
1636 default: /* Unreadable input file type */
1637 arch = bfd_arch_obscure;
1641 bfd_default_set_arch_mach (abfd, arch, machine);
1645 #ifdef SYMNAME_IN_DEBUG
1647 static boolean symname_in_debug_hook
1648 PARAMS ((bfd *, struct internal_syment *));
1651 symname_in_debug_hook (abfd, sym)
1653 struct internal_syment *sym;
1655 return SYMNAME_IN_DEBUG (sym) ? true : false;
1660 #define symname_in_debug_hook \
1661 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
1667 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
1669 static boolean coff_pointerize_aux_hook
1670 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
1671 unsigned int, combined_entry_type *));
1675 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
1677 combined_entry_type *table_base;
1678 combined_entry_type *symbol;
1679 unsigned int indaux;
1680 combined_entry_type *aux;
1682 int class = symbol->u.syment.n_sclass;
1684 if ((class == C_EXT || class == C_HIDEXT)
1685 && indaux + 1 == symbol->u.syment.n_numaux)
1687 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
1689 aux->u.auxent.x_csect.x_scnlen.p =
1690 table_base + aux->u.auxent.x_csect.x_scnlen.l;
1691 aux->fix_scnlen = 1;
1694 /* Return true to indicate that the caller should not do any
1695 further work on this auxent. */
1699 /* Return false to indicate that this auxent should be handled by
1707 /* We don't want to pointerize bal entries. */
1709 static boolean coff_pointerize_aux_hook
1710 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
1711 unsigned int, combined_entry_type *));
1715 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
1717 combined_entry_type *table_base;
1718 combined_entry_type *symbol;
1719 unsigned int indaux;
1720 combined_entry_type *aux;
1722 /* Return true if we don't want to pointerize this aux entry, which
1723 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
1725 && (symbol->u.syment.n_sclass == C_LEAFPROC
1726 || symbol->u.syment.n_sclass == C_LEAFSTAT
1727 || symbol->u.syment.n_sclass == C_LEAFEXT));
1732 #define coff_pointerize_aux_hook 0
1735 #endif /* ! RS6000COFF_C */
1737 /* Print an aux entry. This returns true if it has printed it. */
1739 static boolean coff_print_aux
1740 PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1741 combined_entry_type *, unsigned int));
1744 coff_print_aux (abfd, file, table_base, symbol, aux, indaux)
1747 combined_entry_type *table_base;
1748 combined_entry_type *symbol;
1749 combined_entry_type *aux;
1750 unsigned int indaux;
1753 if ((symbol->u.syment.n_sclass == C_EXT
1754 || symbol->u.syment.n_sclass == C_HIDEXT)
1755 && indaux + 1 == symbol->u.syment.n_numaux)
1757 /* This is a csect entry. */
1758 fprintf (file, "AUX ");
1759 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
1761 BFD_ASSERT (! aux->fix_scnlen);
1762 fprintf (file, "val %5ld", aux->u.auxent.x_csect.x_scnlen.l);
1766 fprintf (file, "indx ");
1767 if (! aux->fix_scnlen)
1768 fprintf (file, "%4ld", aux->u.auxent.x_csect.x_scnlen.l);
1770 fprintf (file, "%4ld",
1771 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
1774 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
1775 aux->u.auxent.x_csect.x_parmhash,
1776 (unsigned int) aux->u.auxent.x_csect.x_snhash,
1777 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
1778 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
1779 (unsigned int) aux->u.auxent.x_csect.x_smclas,
1780 aux->u.auxent.x_csect.x_stab,
1781 (unsigned int) aux->u.auxent.x_csect.x_snstab);
1786 /* Return false to indicate that no special action was taken. */
1794 To write relocations, the back end steps though the
1795 canonical relocation table and create an
1796 @code{internal_reloc}. The symbol index to use is removed from
1797 the @code{offset} field in the symbol table supplied. The
1798 address comes directly from the sum of the section base
1799 address and the relocation offset; the type is dug directly
1800 from the howto field. Then the @code{internal_reloc} is
1801 swapped into the shape of an @code{external_reloc} and written
1808 static int compare_arelent_ptr PARAMS ((const PTR, const PTR));
1810 /* AUX's ld wants relocations to be sorted */
1812 compare_arelent_ptr (x, y)
1816 const arelent **a = (const arelent **) x;
1817 const arelent **b = (const arelent **) y;
1818 bfd_size_type aadr = (*a)->address;
1819 bfd_size_type badr = (*b)->address;
1821 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
1824 #endif /* TARG_AUX */
1827 coff_write_relocs (abfd, first_undef)
1833 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
1836 struct external_reloc dst;
1842 /* sort relocations before we write them out */
1843 p = (arelent **) bfd_malloc (s->reloc_count * sizeof (arelent *));
1844 if (p == NULL && s->reloc_count > 0)
1846 memcpy (p, s->orelocation, s->reloc_count * sizeof (arelent *));
1847 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
1850 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
1852 for (i = 0; i < s->reloc_count; i++)
1854 struct internal_reloc n;
1856 memset ((PTR) & n, 0, sizeof (n));
1858 /* Now we've renumbered the symbols we know where the
1859 undefined symbols live in the table. Check the reloc
1860 entries for symbols who's output bfd isn't the right one.
1861 This is because the symbol was undefined (which means
1862 that all the pointers are never made to point to the same
1863 place). This is a bad thing,'cause the symbols attached
1864 to the output bfd are indexed, so that the relocation
1865 entries know which symbol index they point to. So we
1866 have to look up the output symbol here. */
1868 if (q->sym_ptr_ptr[0]->the_bfd != abfd)
1871 const char *sname = q->sym_ptr_ptr[0]->name;
1872 asymbol **outsyms = abfd->outsymbols;
1873 for (i = first_undef; outsyms[i]; i++)
1875 const char *intable = outsyms[i]->name;
1876 if (strcmp (intable, sname) == 0) {
1877 /* got a hit, so repoint the reloc */
1878 q->sym_ptr_ptr = outsyms + i;
1884 n.r_vaddr = q->address + s->vma;
1887 /* The 29k const/consth reloc pair is a real kludge. The consth
1888 part doesn't have a symbol; it has an offset. So rebuilt
1890 if (q->howto->type == R_IHCONST)
1891 n.r_symndx = q->addend;
1896 if (q->sym_ptr_ptr == bfd_abs_section_ptr->symbol_ptr_ptr)
1897 /* This is a relocation relative to the absolute symbol. */
1901 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
1902 /* Take notice if the symbol reloc points to a symbol
1903 we don't have in our symbol table. What should we
1905 if (n.r_symndx > obj_conv_table_size (abfd))
1910 #ifdef SWAP_OUT_RELOC_OFFSET
1911 n.r_offset = q->addend;
1915 /* Work out reloc type from what is required */
1916 SELECT_RELOC (n, q->howto);
1918 n.r_type = q->howto->type;
1920 coff_swap_reloc_out (abfd, &n, &dst);
1921 if (bfd_write ((PTR) & dst, 1, RELSZ, abfd) != RELSZ)
1934 /* Set flags and magic number of a coff file from architecture and machine
1935 type. Result is true if we can represent the arch&type, false if not. */
1938 coff_set_flags (abfd, magicp, flagsp)
1940 unsigned int *magicp;
1941 unsigned short *flagsp;
1943 switch (bfd_get_arch (abfd))
1948 switch (bfd_get_mach (abfd))
1950 case bfd_mach_z8001:
1953 case bfd_mach_z8002:
1967 *magicp = I960ROMAGIC;
1969 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
1970 I960RWMAGIC); FIXME???
1972 switch (bfd_get_mach (abfd))
1974 case bfd_mach_i960_core:
1977 case bfd_mach_i960_kb_sb:
1980 case bfd_mach_i960_mc:
1983 case bfd_mach_i960_xa:
1986 case bfd_mach_i960_ca:
1989 case bfd_mach_i960_ka_sa:
1992 case bfd_mach_i960_jx:
1995 case bfd_mach_i960_hx:
2008 case bfd_arch_tic30:
2009 *magicp = TIC30MAGIC;
2012 #ifdef TIC80_ARCH_MAGIC
2013 case bfd_arch_tic80:
2014 *magicp = TIC80_ARCH_MAGIC;
2019 * magicp = ARMMAGIC;
2021 if (APCS_SET (abfd))
2023 if (APCS_26_FLAG (abfd))
2024 * flagsp |= F_APCS26;
2026 if (APCS_FLOAT_FLAG (abfd))
2027 * flagsp |= F_APCS_FLOAT;
2029 if (PIC_FLAG (abfd))
2030 * flagsp |= F_PIC_INT;
2032 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2033 * flagsp |= F_INTERWORK;
2034 switch (bfd_get_mach (abfd))
2036 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2037 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2038 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2039 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2040 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2041 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2046 case bfd_arch_powerpc:
2053 *magicp = I386MAGIC;
2055 /* Just overwrite the usual value if we're doing Lynx. */
2056 *magicp = LYNXCOFFMAGIC;
2063 *magicp = I860MAGIC;
2069 #ifdef APOLLOM68KMAGIC
2070 *magicp = APOLLO_COFF_VERSION_NUMBER;
2072 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2073 #ifdef NAMES_HAVE_UNDERSCORE
2074 *magicp = MC68KBCSMAGIC;
2076 *magicp = MC68MAGIC;
2080 /* Just overwrite the usual value if we're doing Lynx. */
2081 *magicp = LYNXCOFFMAGIC;
2089 *magicp = MC88OMAGIC;
2094 case bfd_arch_h8300:
2095 switch (bfd_get_mach (abfd))
2097 case bfd_mach_h8300:
2098 *magicp = H8300MAGIC;
2100 case bfd_mach_h8300h:
2101 *magicp = H8300HMAGIC;
2103 case bfd_mach_h8300s:
2104 *magicp = H8300SMAGIC;
2110 #ifdef SH_ARCH_MAGIC_BIG
2112 if (bfd_big_endian (abfd))
2113 *magicp = SH_ARCH_MAGIC_BIG;
2115 *magicp = SH_ARCH_MAGIC_LITTLE;
2121 case bfd_arch_sparc:
2122 *magicp = SPARCMAGIC;
2124 /* Just overwrite the usual value if we're doing Lynx. */
2125 *magicp = LYNXCOFFMAGIC;
2132 case bfd_arch_h8500:
2133 *magicp = H8500MAGIC;
2137 #ifdef A29K_MAGIC_BIG
2139 if (bfd_big_endian (abfd))
2140 *magicp = A29K_MAGIC_BIG;
2142 *magicp = A29K_MAGIC_LITTLE;
2148 case bfd_arch_we32k:
2149 *magicp = WE32KMAGIC;
2155 case bfd_arch_rs6000:
2157 case bfd_arch_powerpc:
2159 *magicp = U802TOCMAGIC;
2165 case bfd_arch_mcore:
2166 * magicp = MCOREMAGIC;
2170 default: /* Unknown architecture */
2171 /* return false; -- fall through to "return false" below, to avoid
2172 "statement never reached" errors on the one below. */
2181 coff_set_arch_mach (abfd, arch, machine)
2183 enum bfd_architecture arch;
2184 unsigned long machine;
2187 unsigned short dummy2;
2189 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2192 if (arch != bfd_arch_unknown &&
2193 coff_set_flags (abfd, &dummy1, &dummy2) != true)
2194 return false; /* We can't represent this type */
2196 return true; /* We're easy ... */
2200 /* Calculate the file position for each section. */
2203 #define ALIGN_SECTIONS_IN_FILE
2206 #undef ALIGN_SECTIONS_IN_FILE
2210 coff_compute_section_file_positions (abfd)
2214 asection *previous = (asection *) NULL;
2215 file_ptr sofar = FILHSZ;
2216 boolean align_adjust;
2218 #ifdef ALIGN_SECTIONS_IN_FILE
2223 /* On XCOFF, if we have symbols, set up the .debug section. */
2224 if (bfd_get_symcount (abfd) > 0)
2227 bfd_size_type i, symcount;
2231 symcount = bfd_get_symcount (abfd);
2232 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
2234 coff_symbol_type *cf;
2236 cf = coff_symbol_from (abfd, *symp);
2238 && cf->native != NULL
2239 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
2243 len = strlen (bfd_asymbol_name (*symp));
2252 dsec = bfd_make_section_old_way (abfd, ".debug");
2255 dsec->_raw_size = sz;
2256 dsec->flags |= SEC_HAS_CONTENTS;
2261 #ifdef COFF_IMAGE_WITH_PE
2263 if (coff_data (abfd)->link_info)
2265 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
2268 page_size = PE_DEF_FILE_ALIGNMENT;
2270 #ifdef COFF_PAGE_SIZE
2271 int page_size = COFF_PAGE_SIZE;
2275 if (bfd_get_start_address (abfd))
2277 /* A start address may have been added to the original file. In this
2278 case it will need an optional header to record it. */
2279 abfd->flags |= EXEC_P;
2282 if (abfd->flags & EXEC_P)
2285 else if (xcoff_data (abfd)->full_aouthdr)
2288 sofar += SMALL_AOUTSZ;
2291 sofar += abfd->section_count * SCNHSZ;
2294 /* XCOFF handles overflows in the reloc and line number count fields
2295 by allocating a new section header to hold the correct counts. */
2296 for (current = abfd->sections; current != NULL; current = current->next)
2297 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2301 align_adjust = false;
2302 for (current = abfd->sections, count = 1;
2303 current != (asection *) NULL;
2304 current = current->next, ++count)
2306 #ifdef COFF_IMAGE_WITH_PE
2307 /* The NT loader does not want empty section headers, so we omit
2308 them. We don't actually remove the section from the BFD,
2309 although we probably should. This matches code in
2310 coff_write_object_contents. */
2311 if (current->_raw_size == 0)
2313 current->target_index = -1;
2319 current->target_index = count;
2321 /* Only deal with sections which have contents */
2322 if (!(current->flags & SEC_HAS_CONTENTS))
2325 /* Align the sections in the file to the same boundary on
2326 which they are aligned in virtual memory. I960 doesn't
2327 do this (FIXME) so we can stay in sync with Intel. 960
2328 doesn't yet page from files... */
2329 #ifdef ALIGN_SECTIONS_IN_FILE
2330 if ((abfd->flags & EXEC_P) != 0)
2332 /* make sure this section is aligned on the right boundary - by
2333 padding the previous section up if necessary */
2336 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
2337 if (previous != (asection *) NULL)
2339 previous->_raw_size += sofar - old_sofar;
2345 /* In demand paged files the low order bits of the file offset
2346 must match the low order bits of the virtual address. */
2347 #ifdef COFF_PAGE_SIZE
2348 if ((abfd->flags & D_PAGED) != 0
2349 && (current->flags & SEC_ALLOC) != 0)
2350 sofar += (current->vma - sofar) % page_size;
2352 current->filepos = sofar;
2354 #ifdef COFF_IMAGE_WITH_PE
2355 /* With PE we have to pad each section to be a multiple of its
2356 page size too, and remember both sizes. */
2358 if (coff_section_data (abfd, current) == NULL)
2360 current->used_by_bfd =
2361 (PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata));
2362 if (current->used_by_bfd == NULL)
2365 if (pei_section_data (abfd, current) == NULL)
2367 coff_section_data (abfd, current)->tdata =
2368 (PTR) bfd_zalloc (abfd, sizeof (struct pei_section_tdata));
2369 if (coff_section_data (abfd, current)->tdata == NULL)
2372 if (pei_section_data (abfd, current)->virt_size == 0)
2373 pei_section_data (abfd, current)->virt_size = current->_raw_size;
2375 current->_raw_size = (current->_raw_size + page_size -1) & -page_size;
2378 sofar += current->_raw_size;
2380 #ifdef ALIGN_SECTIONS_IN_FILE
2381 /* make sure that this section is of the right size too */
2382 if ((abfd->flags & EXEC_P) == 0)
2384 bfd_size_type old_size;
2386 old_size = current->_raw_size;
2387 current->_raw_size = BFD_ALIGN (current->_raw_size,
2388 1 << current->alignment_power);
2389 align_adjust = current->_raw_size != old_size;
2390 sofar += current->_raw_size - old_size;
2395 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
2396 align_adjust = sofar != old_sofar;
2397 current->_raw_size += sofar - old_sofar;
2401 #ifdef COFF_IMAGE_WITH_PE
2402 /* For PE we need to make sure we pad out to the aligned
2403 _raw_size, in case the caller only writes out data to the
2404 unaligned _raw_size. */
2405 if (pei_section_data (abfd, current)->virt_size < current->_raw_size)
2406 align_adjust = true;
2410 /* Force .lib sections to start at zero. The vma is then
2411 incremented in coff_set_section_contents. This is right for
2413 if (strcmp (current->name, _LIB) == 0)
2414 bfd_set_section_vma (abfd, current, 0);
2420 /* It is now safe to write to the output file. If we needed an
2421 alignment adjustment for the last section, then make sure that
2422 there is a byte at offset sofar. If there are no symbols and no
2423 relocs, then nothing follows the last section. If we don't force
2424 the last byte out, then the file may appear to be truncated. */
2430 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
2431 || bfd_write (&b, 1, 1, abfd) != 1)
2435 /* Make sure the relocations are aligned. We don't need to make
2436 sure that this byte exists, because it will only matter if there
2437 really are relocs. */
2438 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
2440 obj_relocbase (abfd) = sofar;
2441 abfd->output_has_begun = true;
2448 /* This can never work, because it is called too late--after the
2449 section positions have been set. I can't figure out what it is
2450 for, so I am going to disable it--Ian Taylor 20 March 1996. */
2452 /* If .file, .text, .data, .bss symbols are missing, add them. */
2453 /* @@ Should we only be adding missing symbols, or overriding the aux
2454 values for existing section symbols? */
2456 coff_add_missing_symbols (abfd)
2459 unsigned int nsyms = bfd_get_symcount (abfd);
2460 asymbol **sympp = abfd->outsymbols;
2463 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
2465 for (i = 0; i < nsyms; i++)
2467 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
2471 /* only do this if there is a coff representation of the input
2473 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
2478 name = csym->symbol.name;
2481 if (!strcmp (name, _TEXT))
2484 else if (!strcmp (name, ".wtext"))
2487 else if (!strcmp (name, _DATA))
2489 else if (!strcmp (name, _BSS))
2493 /* Now i == bfd_get_symcount (abfd). */
2494 /* @@ For now, don't deal with .file symbol. */
2497 if (!need_text && !need_data && !need_bss && !need_file)
2499 nsyms += need_text + need_data + need_bss + need_file;
2500 sympp2 = (asymbol **) bfd_alloc (abfd, nsyms * sizeof (asymbol *));
2503 memcpy (sympp2, sympp, i * sizeof (asymbol *));
2506 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
2510 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
2512 sympp2[i++] = coff_section_symbol (abfd, _DATA);
2514 sympp2[i++] = coff_section_symbol (abfd, _BSS);
2515 BFD_ASSERT (i == nsyms);
2516 bfd_set_symtab (abfd, sympp2, nsyms);
2525 coff_write_object_contents (abfd)
2529 boolean hasrelocs = false;
2530 boolean haslinno = false;
2532 file_ptr reloc_base;
2533 file_ptr lineno_base;
2535 unsigned long reloc_size = 0;
2536 unsigned long lnno_size = 0;
2537 boolean long_section_names;
2538 asection *text_sec = NULL;
2539 asection *data_sec = NULL;
2540 asection *bss_sec = NULL;
2541 struct internal_filehdr internal_f;
2542 struct internal_aouthdr internal_a;
2543 #ifdef COFF_LONG_SECTION_NAMES
2544 size_t string_size = STRING_SIZE_SIZE;
2547 bfd_set_error (bfd_error_system_call);
2549 /* Make a pass through the symbol table to count line number entries and
2550 put them into the correct asections */
2552 lnno_size = coff_count_linenumbers (abfd) * LINESZ;
2554 if (abfd->output_has_begun == false)
2556 if (! coff_compute_section_file_positions (abfd))
2560 reloc_base = obj_relocbase (abfd);
2562 /* Work out the size of the reloc and linno areas */
2564 for (current = abfd->sections; current != NULL; current =
2566 reloc_size += current->reloc_count * RELSZ;
2568 lineno_base = reloc_base + reloc_size;
2569 sym_base = lineno_base + lnno_size;
2571 /* Indicate in each section->line_filepos its actual file address */
2572 for (current = abfd->sections; current != NULL; current =
2575 if (current->lineno_count)
2577 current->line_filepos = lineno_base;
2578 current->moving_line_filepos = lineno_base;
2579 lineno_base += current->lineno_count * LINESZ;
2583 current->line_filepos = 0;
2585 if (current->reloc_count)
2587 current->rel_filepos = reloc_base;
2588 reloc_base += current->reloc_count * RELSZ;
2592 current->rel_filepos = 0;
2596 /* Write section headers to the file. */
2597 internal_f.f_nscns = 0;
2599 if ((abfd->flags & EXEC_P) != 0)
2600 scn_base = FILHSZ + AOUTSZ;
2605 if (xcoff_data (abfd)->full_aouthdr)
2608 scn_base += SMALL_AOUTSZ;
2612 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
2615 long_section_names = false;
2616 for (current = abfd->sections;
2618 current = current->next)
2620 struct internal_scnhdr section;
2623 /* If we've got a .reloc section, remember. */
2625 #ifdef COFF_IMAGE_WITH_PE
2626 if (strcmp (current->name, ".reloc") == 0)
2628 pe_data (abfd)->has_reloc_section = 1;
2633 internal_f.f_nscns++;
2635 strncpy (section.s_name, current->name, SCNNMLEN);
2637 #ifdef COFF_LONG_SECTION_NAMES
2638 /* Handle long section names as in PE. This must be compatible
2639 with the code in coff_write_symbols. */
2643 len = strlen (current->name);
2646 memset (section.s_name, 0, SCNNMLEN);
2647 sprintf (section.s_name, "/%lu", (unsigned long) string_size);
2648 string_size += len + 1;
2649 long_section_names = true;
2655 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
2657 if (strcmp (current->name, _LIB) == 0)
2658 section.s_vaddr = 0;
2661 section.s_vaddr = current->vma;
2662 section.s_paddr = current->lma;
2663 section.s_size = current->_raw_size;
2666 section.s_paddr = 0;
2668 #ifdef COFF_IMAGE_WITH_PE
2669 /* Reminder: s_paddr holds the virtual size of the section. */
2670 if (coff_section_data (abfd, current) != NULL
2671 && pei_section_data (abfd, current) != NULL)
2672 section.s_paddr = pei_section_data (abfd, current)->virt_size;
2674 section.s_paddr = 0;
2678 If this section has no size or is unloadable then the scnptr
2681 if (current->_raw_size == 0 ||
2682 (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2684 section.s_scnptr = 0;
2688 section.s_scnptr = current->filepos;
2690 section.s_relptr = current->rel_filepos;
2691 section.s_lnnoptr = current->line_filepos;
2692 section.s_nreloc = current->reloc_count;
2693 section.s_nlnno = current->lineno_count;
2694 if (current->reloc_count != 0)
2696 if (current->lineno_count != 0)
2700 /* Indicate the use of an XCOFF overflow section header. */
2701 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2703 section.s_nreloc = 0xffff;
2704 section.s_nlnno = 0xffff;
2708 section.s_flags = sec_to_styp_flags (current->name, current->flags);
2710 if (!strcmp (current->name, _TEXT))
2714 else if (!strcmp (current->name, _DATA))
2718 else if (!strcmp (current->name, _BSS))
2724 section.s_align = (current->alignment_power
2725 ? 1 << current->alignment_power
2729 section.s_flags |= (current->alignment_power & 0xF) << 8;
2733 #ifdef COFF_IMAGE_WITH_PE
2734 /* suppress output of the sections if they are null. ld includes
2735 the bss and data sections even if there is no size assigned
2736 to them. NT loader doesn't like it if these section headers are
2737 included if the sections themselves are not needed */
2738 if (section.s_size == 0)
2739 internal_f.f_nscns--;
2744 if (coff_swap_scnhdr_out (abfd, §ion, &buff) == 0
2745 || bfd_write ((PTR) (&buff), 1, SCNHSZ, abfd) != SCNHSZ)
2750 /* PE stores COMDAT section information in the symbol table. If
2751 this section is supposed to have some COMDAT info, track down
2752 the symbol in the symbol table and modify it. */
2753 if ((current->flags & SEC_LINK_ONCE) != 0)
2755 unsigned int i, count;
2757 coff_symbol_type *csym = NULL;
2761 count = bfd_get_symcount (abfd);
2762 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
2764 if ((*psym)->section != current)
2767 /* Remember the location of the first symbol in this
2769 if (psymsec == NULL)
2772 /* See if this is the section symbol. */
2773 if (strcmp ((*psym)->name, current->name) == 0)
2775 csym = coff_symbol_from (abfd, *psym);
2777 || csym->native == NULL
2778 || csym->native->u.syment.n_numaux < 1
2779 || csym->native->u.syment.n_sclass != C_STAT
2780 || csym->native->u.syment.n_type != T_NULL)
2783 /* Here *PSYM is the section symbol for CURRENT. */
2790 Note that we might not if we're converting the file from
2791 some other object file format. */
2794 combined_entry_type *aux;
2796 /* We don't touch the x_checksum field. The
2797 x_associated field is not currently supported. */
2799 aux = csym->native + 1;
2800 switch (current->flags & SEC_LINK_DUPLICATES)
2802 case SEC_LINK_DUPLICATES_DISCARD:
2803 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
2806 case SEC_LINK_DUPLICATES_ONE_ONLY:
2807 aux->u.auxent.x_scn.x_comdat =
2808 IMAGE_COMDAT_SELECT_NODUPLICATES;
2811 case SEC_LINK_DUPLICATES_SAME_SIZE:
2812 aux->u.auxent.x_scn.x_comdat =
2813 IMAGE_COMDAT_SELECT_SAME_SIZE;
2816 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
2817 aux->u.auxent.x_scn.x_comdat =
2818 IMAGE_COMDAT_SELECT_EXACT_MATCH;
2822 /* The COMDAT symbol must be the first symbol from this
2823 section in the symbol table. In order to make this
2824 work, we move the COMDAT symbol before the first
2825 symbol we found in the search above. It's OK to
2826 rearrange the symbol table at this point, because
2827 coff_renumber_symbols is going to rearrange it
2828 further and fix up all the aux entries. */
2829 if (psym != psymsec)
2835 for (pcopy = psym; pcopy > psymsec; pcopy--)
2836 pcopy[0] = pcopy[-1];
2841 #endif /* COFF_WITH_PE */
2845 /* XCOFF handles overflows in the reloc and line number count fields
2846 by creating a new section header to hold the correct values. */
2847 for (current = abfd->sections; current != NULL; current = current->next)
2849 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2851 struct internal_scnhdr scnhdr;
2854 internal_f.f_nscns++;
2855 strncpy (&(scnhdr.s_name[0]), current->name, 8);
2856 scnhdr.s_paddr = current->reloc_count;
2857 scnhdr.s_vaddr = current->lineno_count;
2859 scnhdr.s_scnptr = 0;
2860 scnhdr.s_relptr = current->rel_filepos;
2861 scnhdr.s_lnnoptr = current->line_filepos;
2862 scnhdr.s_nreloc = current->target_index;
2863 scnhdr.s_nlnno = current->target_index;
2864 scnhdr.s_flags = STYP_OVRFLO;
2865 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
2866 || bfd_write ((PTR) &buff, 1, SCNHSZ, abfd) != SCNHSZ)
2872 /* OK, now set up the filehdr... */
2874 /* Don't include the internal abs section in the section count */
2877 We will NOT put a fucking timestamp in the header here. Every time you
2878 put it back, I will come in and take it out again. I'm sorry. This
2879 field does not belong here. We fill it with a 0 so it compares the
2882 internal_f.f_timdat = 0;
2884 internal_f.f_flags = 0;
2886 if (abfd->flags & EXEC_P)
2887 internal_f.f_opthdr = AOUTSZ;
2890 internal_f.f_opthdr = 0;
2892 if (xcoff_data (abfd)->full_aouthdr)
2893 internal_f.f_opthdr = AOUTSZ;
2895 internal_f.f_opthdr = SMALL_AOUTSZ;
2900 internal_f.f_flags |= F_RELFLG;
2902 internal_f.f_flags |= F_LNNO;
2903 if (abfd->flags & EXEC_P)
2904 internal_f.f_flags |= F_EXEC;
2906 /* FIXME: this is wrong for PPC_PE! */
2907 if (bfd_little_endian (abfd))
2908 internal_f.f_flags |= F_AR32WR;
2910 internal_f.f_flags |= F_AR32W;
2912 #ifdef TIC80_TARGET_ID
2913 internal_f.f_target_id = TIC80_TARGET_ID;
2917 FIXME, should do something about the other byte orders and
2922 if ((abfd->flags & DYNAMIC) != 0)
2923 internal_f.f_flags |= F_SHROBJ;
2924 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
2925 internal_f.f_flags |= F_DYNLOAD;
2928 memset (&internal_a, 0, sizeof internal_a);
2930 /* Set up architecture-dependent stuff */
2933 unsigned int magic = 0;
2934 unsigned short flags = 0;
2935 coff_set_flags (abfd, &magic, &flags);
2936 internal_f.f_magic = magic;
2937 internal_f.f_flags |= flags;
2938 /* ...and the "opt"hdr... */
2941 #ifdef ULTRA3 /* NYU's machine */
2942 /* FIXME: This is a bogus check. I really want to see if there
2943 * is a .shbss or a .shdata section, if so then set the magic
2944 * number to indicate a shared data executable.
2946 if (internal_f.f_nscns >= 7)
2947 internal_a.magic = SHMAGIC; /* Shared magic */
2950 internal_a.magic = NMAGIC; /* Assume separate i/d */
2951 #define __A_MAGIC_SET__
2954 internal_a.magic = TIC80_ARCH_MAGIC;
2955 #define __A_MAGIC_SET__
2958 /* FIXME: What are the a.out magic numbers for the i860? */
2959 internal_a.magic = 0;
2960 #define __A_MAGIC_SET__
2963 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
2964 #define __A_MAGIC_SET__
2967 #define __A_MAGIC_SET__
2968 internal_a.magic = PAGEMAGICBCS;
2972 #define __A_MAGIC_SET__
2973 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
2976 #if defined(M68) || defined(WE32K) || defined(M68K)
2977 #define __A_MAGIC_SET__
2979 internal_a.magic = LYNXCOFFMAGIC;
2981 #if defined(TARG_AUX)
2982 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
2983 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
2984 PAGEMAGICEXECSWAPPED);
2986 #if defined (PAGEMAGICPEXECPAGED)
2987 internal_a.magic = PAGEMAGICPEXECPAGED;
2989 #endif /* TARG_AUX */
2991 #endif /* M68 || WE32K || M68K */
2994 #define __A_MAGIC_SET__
2995 internal_a.magic = ZMAGIC;
2999 #define __A_MAGIC_SET__
3000 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3003 #if defined MCORE_PE
3004 #define __A_MAGIC_SET__
3005 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3009 #define __A_MAGIC_SET__
3011 internal_a.magic = LYNXCOFFMAGIC;
3013 internal_a.magic = ZMAGIC;
3018 #define __A_MAGIC_SET__
3020 internal_a.magic = LYNXCOFFMAGIC;
3025 #define __A_MAGIC_SET__
3026 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
3027 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
3028 RS6K_AOUTHDR_OMAGIC;
3031 #ifndef __A_MAGIC_SET__
3032 #include "Your aouthdr magic number is not being set!"
3034 #undef __A_MAGIC_SET__
3038 /* FIXME: Does anybody ever set this to another value? */
3039 internal_a.vstamp = 0;
3041 /* Now should write relocs, strings, syms */
3042 obj_sym_filepos (abfd) = sym_base;
3044 if (bfd_get_symcount (abfd) != 0)
3048 if (!coff_add_missing_symbols (abfd))
3051 if (!coff_renumber_symbols (abfd, &firstundef))
3053 coff_mangle_symbols (abfd);
3054 if (! coff_write_symbols (abfd))
3056 if (! coff_write_linenumbers (abfd))
3058 if (! coff_write_relocs (abfd, firstundef))
3061 #ifdef COFF_LONG_SECTION_NAMES
3062 else if (long_section_names)
3064 /* If we have long section names we have to write out the string
3065 table even if there are no symbols. */
3066 if (! coff_write_symbols (abfd))
3070 #ifdef COFF_IMAGE_WITH_PE
3072 else if ((abfd->flags & EXEC_P) != 0)
3076 /* PowerPC PE appears to require that all executable files be
3077 rounded up to the page size. */
3080 BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
3082 || bfd_write (&b, 1, 1, abfd) != 1)
3088 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
3089 backend linker, and obj_raw_syment_count is not valid until after
3090 coff_write_symbols is called. */
3091 if (obj_raw_syment_count (abfd) != 0)
3093 internal_f.f_symptr = sym_base;
3095 /* AIX appears to require that F_RELFLG not be set if there are
3096 local symbols but no relocations. */
3097 internal_f.f_flags &=~ F_RELFLG;
3102 if (long_section_names)
3103 internal_f.f_symptr = sym_base;
3105 internal_f.f_symptr = 0;
3106 internal_f.f_flags |= F_LSYMS;
3111 internal_a.tsize = bfd_get_section_size_before_reloc (text_sec);
3112 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
3116 internal_a.dsize = bfd_get_section_size_before_reloc (data_sec);
3117 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
3121 internal_a.bsize = bfd_get_section_size_before_reloc (bss_sec);
3122 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
3123 internal_a.data_start = bss_sec->vma;
3126 internal_a.entry = bfd_get_start_address (abfd);
3127 internal_f.f_nsyms = obj_raw_syment_count (abfd);
3130 if (xcoff_data (abfd)->full_aouthdr)
3133 asection *loader_sec;
3135 internal_a.vstamp = 1;
3137 internal_a.o_snentry = xcoff_data (abfd)->snentry;
3138 if (internal_a.o_snentry == 0)
3139 internal_a.entry = (bfd_vma) -1;
3141 if (text_sec != NULL)
3143 internal_a.o_sntext = text_sec->target_index;
3144 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
3148 internal_a.o_sntext = 0;
3149 internal_a.o_algntext = 0;
3151 if (data_sec != NULL)
3153 internal_a.o_sndata = data_sec->target_index;
3154 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
3158 internal_a.o_sndata = 0;
3159 internal_a.o_algndata = 0;
3161 loader_sec = bfd_get_section_by_name (abfd, ".loader");
3162 if (loader_sec != NULL)
3163 internal_a.o_snloader = loader_sec->target_index;
3165 internal_a.o_snloader = 0;
3166 if (bss_sec != NULL)
3167 internal_a.o_snbss = bss_sec->target_index;
3169 internal_a.o_snbss = 0;
3171 toc = xcoff_data (abfd)->toc;
3172 internal_a.o_toc = toc;
3173 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
3175 internal_a.o_modtype = xcoff_data (abfd)->modtype;
3176 if (xcoff_data (abfd)->cputype != -1)
3177 internal_a.o_cputype = xcoff_data (abfd)->cputype;
3180 switch (bfd_get_arch (abfd))
3182 case bfd_arch_rs6000:
3183 internal_a.o_cputype = 4;
3185 case bfd_arch_powerpc:
3186 if (bfd_get_mach (abfd) == 0)
3187 internal_a.o_cputype = 3;
3189 internal_a.o_cputype = 1;
3195 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
3196 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
3200 /* now write them */
3201 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
3205 coff_swap_filehdr_out (abfd, (PTR) & internal_f, (PTR) buff);
3206 if (bfd_write ((PTR) buff, 1, FILHSZ, abfd) != FILHSZ)
3209 if (abfd->flags & EXEC_P)
3211 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
3212 include/coff/pe.h sets AOUTSZ == sizeof(PEAOUTHDR)) */
3214 coff_swap_aouthdr_out (abfd, (PTR) & internal_a, (PTR) buff);
3215 if (bfd_write ((PTR) buff, 1, AOUTSZ, abfd) != AOUTSZ)
3224 /* XCOFF seems to always write at least a small a.out header. */
3225 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff);
3226 if (xcoff_data (abfd)->full_aouthdr)
3229 size = SMALL_AOUTSZ;
3230 if (bfd_write ((PTR) &buff, 1, size, abfd) != size)
3239 coff_set_section_contents (abfd, section, location, offset, count)
3244 bfd_size_type count;
3246 if (abfd->output_has_begun == false) /* set by bfd.c handler */
3248 if (! coff_compute_section_file_positions (abfd))
3252 #if defined(_LIB) && !defined(TARG_AUX)
3254 /* The physical address field of a .lib section is used to hold the
3255 number of shared libraries in the section. This code counts the
3256 number of sections being written, and increments the lma field
3259 I have found no documentation on the contents of this section.
3260 Experimentation indicates that the section contains zero or more
3261 records, each of which has the following structure:
3263 - a (four byte) word holding the length of this record, in words,
3264 - a word that always seems to be set to "2",
3265 - the path to a shared library, null-terminated and then padded
3266 to a whole word boundary.
3268 bfd_assert calls have been added to alert if an attempt is made
3269 to write a section which doesn't follow these assumptions. The
3270 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
3275 if (strcmp (section->name, _LIB) == 0)
3277 bfd_byte *rec, *recend;
3279 rec = (bfd_byte *) location;
3280 recend = rec + count;
3281 while (rec < recend)
3284 rec += bfd_get_32 (abfd, rec) * 4;
3287 BFD_ASSERT (rec == recend);
3292 /* Don't write out bss sections - one way to do this is to
3293 see if the filepos has not been set. */
3294 if (section->filepos == 0)
3297 if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0)
3302 return (bfd_write (location, 1, count, abfd) == count) ? true : false;
3308 coff_close_and_cleanup (abfd)
3311 if (!bfd_read_p (abfd))
3312 switch (abfd->format)
3315 if (!_bfd_write_archive_contents (abfd))
3319 if (!coff_write_object_contents (abfd))
3323 bfd_set_error (bfd_error_invalid_operation);
3327 /* We depend on bfd_close to free all the memory on the objalloc. */
3334 buy_and_read (abfd, where, seek_direction, size)
3340 PTR area = (PTR) bfd_alloc (abfd, size);
3343 if (bfd_seek (abfd, where, seek_direction) != 0
3344 || bfd_read (area, 1, size, abfd) != size)
3347 } /* buy_and_read() */
3353 Creating the linenumber table is done by reading in the entire
3354 coff linenumber table, and creating another table for internal use.
3356 A coff linenumber table is structured so that each function
3357 is marked as having a line number of 0. Each line within the
3358 function is an offset from the first line in the function. The
3359 base of the line number information for the table is stored in
3360 the symbol associated with the function.
3362 The information is copied from the external to the internal
3363 table, and each symbol which marks a function is marked by
3366 How does this work ?
3371 coff_slurp_line_table (abfd, asect)
3375 LINENO *native_lineno;
3376 alent *lineno_cache;
3378 BFD_ASSERT (asect->lineno == (alent *) NULL);
3380 native_lineno = (LINENO *) buy_and_read (abfd,
3381 asect->line_filepos,
3384 asect->lineno_count));
3386 (alent *) bfd_alloc (abfd, (size_t) ((asect->lineno_count + 1) * sizeof (alent)));
3387 if (lineno_cache == NULL)
3391 unsigned int counter = 0;
3392 alent *cache_ptr = lineno_cache;
3393 LINENO *src = native_lineno;
3395 while (counter < asect->lineno_count)
3397 struct internal_lineno dst;
3398 coff_swap_lineno_in (abfd, src, &dst);
3399 cache_ptr->line_number = dst.l_lnno;
3401 if (cache_ptr->line_number == 0)
3405 coff_symbol_type *sym;
3408 symndx = dst.l_addr.l_symndx;
3410 || (unsigned long) symndx >= obj_raw_syment_count (abfd))
3412 (*_bfd_error_handler)
3413 (_("%s: warning: illegal symbol index %ld in line numbers"),
3414 bfd_get_filename (abfd), dst.l_addr.l_symndx);
3418 /* FIXME: We should not be casting between ints and
3419 pointers like this. */
3420 sym = ((coff_symbol_type *)
3421 ((symndx + obj_raw_syments (abfd))
3422 ->u.syment._n._n_n._n_zeroes));
3423 cache_ptr->u.sym = (asymbol *) sym;
3424 if (sym->lineno != NULL && ! warned)
3426 (*_bfd_error_handler)
3427 (_("%s: warning: duplicate line number information for `%s'"),
3428 bfd_get_filename (abfd),
3429 bfd_asymbol_name (&sym->symbol));
3431 sym->lineno = cache_ptr;
3435 cache_ptr->u.offset = dst.l_addr.l_paddr
3436 - bfd_section_vma (abfd, asect);
3437 } /* If no linenumber expect a symbol index */
3443 cache_ptr->line_number = 0;
3446 asect->lineno = lineno_cache;
3447 /* FIXME, free native_lineno here, or use alloca or something. */
3452 coff_slurp_symbol_table (abfd)
3455 combined_entry_type *native_symbols;
3456 coff_symbol_type *cached_area;
3457 unsigned int *table_ptr;
3459 unsigned int number_of_symbols = 0;
3461 if (obj_symbols (abfd))
3464 /* Read in the symbol table */
3465 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
3470 /* Allocate enough room for all the symbols in cached form */
3471 cached_area = ((coff_symbol_type *)
3473 (obj_raw_syment_count (abfd)
3474 * sizeof (coff_symbol_type))));
3476 if (cached_area == NULL)
3478 table_ptr = ((unsigned int *)
3480 (obj_raw_syment_count (abfd)
3481 * sizeof (unsigned int))));
3483 if (table_ptr == NULL)
3487 coff_symbol_type *dst = cached_area;
3488 unsigned int last_native_index = obj_raw_syment_count (abfd);
3489 unsigned int this_index = 0;
3490 while (this_index < last_native_index)
3492 combined_entry_type *src = native_symbols + this_index;
3493 table_ptr[this_index] = number_of_symbols;
3494 dst->symbol.the_bfd = abfd;
3496 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
3497 /* We use the native name field to point to the cached field. */
3498 src->u.syment._n._n_n._n_zeroes = (long) dst;
3499 dst->symbol.section = coff_section_from_bfd_index (abfd,
3500 src->u.syment.n_scnum);
3501 dst->symbol.flags = 0;
3502 dst->done_lineno = false;
3504 switch (src->u.syment.n_sclass)
3509 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
3510 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
3511 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
3513 /* Fall through to next case */
3521 case C_THUMBEXTFUNC:
3527 case C_SYSTEM: /* System Wide variable */
3530 /* PE uses storage class 0x68 to denote a section symbol */
3532 /* PE uses storage class 0x69 for a weak external symbol. */
3535 if ((src->u.syment.n_scnum) == 0)
3537 if ((src->u.syment.n_value) == 0)
3539 dst->symbol.section = bfd_und_section_ptr;
3540 dst->symbol.value = 0;
3544 dst->symbol.section = bfd_com_section_ptr;
3545 dst->symbol.value = (src->u.syment.n_value);
3550 /* Base the value as an index from the base of the
3553 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
3555 #if defined COFF_WITH_PE
3556 /* PE sets the symbol to a value relative to the
3557 start of the section. */
3558 dst->symbol.value = src->u.syment.n_value;
3560 dst->symbol.value = (src->u.syment.n_value
3561 - dst->symbol.section->vma);
3564 if (ISFCN ((src->u.syment.n_type)))
3566 /* A function ext does not go at the end of a
3568 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
3573 /* A C_HIDEXT symbol is not global. */
3574 if (src->u.syment.n_sclass == C_HIDEXT)
3575 dst->symbol.flags = BSF_LOCAL;
3576 /* A symbol with a csect entry should not go at the end. */
3577 if (src->u.syment.n_numaux > 0)
3578 dst->symbol.flags |= BSF_NOT_AT_END;
3582 if (src->u.syment.n_sclass == C_NT_WEAK)
3583 dst->symbol.flags = BSF_WEAK;
3586 if (src->u.syment.n_sclass == C_WEAKEXT)
3587 dst->symbol.flags = BSF_WEAK;
3591 case C_STAT: /* static */
3593 case C_LEAFSTAT: /* static leaf procedure */
3596 case C_THUMBSTAT: /* Thumb static */
3597 case C_THUMBLABEL: /* Thumb label */
3598 case C_THUMBSTATFUNC:/* Thumb static function */
3600 case C_LABEL: /* label */
3601 if (src->u.syment.n_scnum == -2)
3602 dst->symbol.flags = BSF_DEBUGGING;
3604 dst->symbol.flags = BSF_LOCAL;
3606 /* Base the value as an index from the base of the
3607 section, if there is one. */
3608 if (dst->symbol.section)
3610 #if defined COFF_WITH_PE
3611 /* PE sets the symbol to a value relative to the
3612 start of the section. */
3613 dst->symbol.value = src->u.syment.n_value;
3615 dst->symbol.value = (src->u.syment.n_value
3616 - dst->symbol.section->vma);
3620 dst->symbol.value = src->u.syment.n_value;
3623 case C_MOS: /* member of structure */
3624 case C_EOS: /* end of structure */
3625 #ifdef NOTDEF /* C_AUTOARG has the same value */
3627 case C_GLBLREG: /* A29k-specific storage class */
3630 case C_REGPARM: /* register parameter */
3631 case C_REG: /* register variable */
3634 case C_AUTOARG: /* 960-specific storage class */
3637 case C_TPDEF: /* type definition */
3639 case C_AUTO: /* automatic variable */
3640 case C_FIELD: /* bit field */
3641 case C_ENTAG: /* enumeration tag */
3642 case C_MOE: /* member of enumeration */
3643 case C_MOU: /* member of union */
3644 case C_UNTAG: /* union tag */
3645 dst->symbol.flags = BSF_DEBUGGING;
3646 dst->symbol.value = (src->u.syment.n_value);
3649 case C_FILE: /* file name */
3650 case C_STRTAG: /* structure tag */
3665 dst->symbol.flags = BSF_DEBUGGING;
3666 dst->symbol.value = (src->u.syment.n_value);
3670 case C_BINCL: /* beginning of include file */
3671 case C_EINCL: /* ending of include file */
3672 /* The value is actually a pointer into the line numbers
3673 of the file. We locate the line number entry, and
3674 set the section to the section which contains it, and
3675 the value to the index in that section. */
3679 dst->symbol.flags = BSF_DEBUGGING;
3680 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3681 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
3682 && ((file_ptr) (sec->line_filepos
3683 + sec->lineno_count * LINESZ)
3684 > (file_ptr) src->u.syment.n_value))
3687 dst->symbol.value = 0;
3690 dst->symbol.section = sec;
3691 dst->symbol.value = ((src->u.syment.n_value
3692 - sec->line_filepos)
3700 dst->symbol.flags = BSF_DEBUGGING;
3702 /* The value is actually a symbol index. Save a pointer
3703 to the symbol instead of the index. FIXME: This
3704 should use a union. */
3705 src->u.syment.n_value =
3706 (long) (native_symbols + src->u.syment.n_value);
3707 dst->symbol.value = src->u.syment.n_value;
3712 case C_BLOCK: /* ".bb" or ".eb" */
3713 case C_FCN: /* ".bf" or ".ef" */
3714 case C_EFCN: /* physical end of function */
3715 dst->symbol.flags = BSF_LOCAL;
3716 #if defined COFF_WITH_PE
3717 /* PE sets the symbol to a value relative to the start
3719 dst->symbol.value = src->u.syment.n_value;
3721 /* Base the value as an index from the base of the
3723 dst->symbol.value = (src->u.syment.n_value
3724 - dst->symbol.section->vma);
3729 case C_EXTDEF: /* external definition */
3730 case C_ULABEL: /* undefined label */
3731 case C_USTATIC: /* undefined static */
3732 #ifndef COFF_WITH_PE
3733 /* C_LINE in regular coff is 0x68. NT has taken over this storage
3734 class to represent a section symbol */
3735 case C_LINE: /* line # reformatted as symbol table entry */
3736 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
3737 case C_ALIAS: /* duplicate tag */
3739 /* New storage classes for TIc80 */
3741 case C_UEXT: /* Tentative external definition */
3743 case C_STATLAB: /* Static load time label */
3744 case C_EXTLAB: /* External load time label */
3745 case C_HIDDEN: /* ext symbol in dmert public lib */
3747 (*_bfd_error_handler)
3748 (_("%s: Unrecognized storage class %d for %s symbol `%s'"),
3749 bfd_get_filename (abfd), src->u.syment.n_sclass,
3750 dst->symbol.section->name, dst->symbol.name);
3751 dst->symbol.flags = BSF_DEBUGGING;
3752 dst->symbol.value = (src->u.syment.n_value);
3756 /* BFD_ASSERT(dst->symbol.flags != 0);*/
3760 dst->symbol.udata.i = 0;
3761 dst->lineno = (alent *) NULL;
3762 this_index += (src->u.syment.n_numaux) + 1;
3764 number_of_symbols++;
3765 } /* walk the native symtab */
3766 } /* bfdize the native symtab */
3768 obj_symbols (abfd) = cached_area;
3769 obj_raw_syments (abfd) = native_symbols;
3771 bfd_get_symcount (abfd) = number_of_symbols;
3772 obj_convert (abfd) = table_ptr;
3773 /* Slurp the line tables for each section too */
3779 coff_slurp_line_table (abfd, p);
3784 } /* coff_slurp_symbol_table() */
3786 /* Check whether a symbol is globally visible. This is used by the
3787 COFF backend linker code in cofflink.c, since a couple of targets
3788 have globally visible symbols which are not class C_EXT. This
3789 function need not handle the case of n_class == C_EXT. */
3791 #undef OTHER_GLOBAL_CLASS
3794 #define OTHER_GLOBAL_CLASS C_LEAFEXT
3798 #define OTHER_GLOBAL_CLASS C_THUMBEXT || syment->n_sclass == C_THUMBEXTFUNC
3801 #define OTHER_GLOBAL_CLASS C_SECTION
3805 #ifdef OTHER_GLOBAL_CLASS
3807 static boolean coff_sym_is_global PARAMS ((bfd *, struct internal_syment *));
3810 coff_sym_is_global (abfd, syment)
3812 struct internal_syment * syment;
3814 return (syment->n_sclass == OTHER_GLOBAL_CLASS);
3817 #undef OTHER_GLOBAL_CLASS
3819 #else /* ! defined (OTHER_GLOBAL_CLASS) */
3821 /* sym_is_global should not be defined if it has nothing to do. */
3823 #define coff_sym_is_global 0
3825 #endif /* ! defined (OTHER_GLOBAL_CLASS) */
3831 Coff relocations are easily transformed into the internal BFD form
3834 Reading a coff relocation table is done in the following stages:
3836 o Read the entire coff relocation table into memory.
3838 o Process each relocation in turn; first swap it from the
3839 external to the internal form.
3841 o Turn the symbol referenced in the relocation's symbol index
3842 into a pointer into the canonical symbol table.
3843 This table is the same as the one returned by a call to
3844 @code{bfd_canonicalize_symtab}. The back end will call that
3845 routine and save the result if a canonicalization hasn't been done.
3847 o The reloc index is turned into a pointer to a howto
3848 structure, in a back end specific way. For instance, the 386
3849 and 960 use the @code{r_type} to directly produce an index
3850 into a howto table vector; the 88k subtracts a number from the
3851 @code{r_type} field and creates an addend field.
3857 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
3859 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
3860 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
3861 coffsym = (obj_symbols (abfd) \
3862 + (cache_ptr->sym_ptr_ptr - symbols)); \
3864 coffsym = coff_symbol_from (abfd, ptr); \
3865 if (coffsym != (coff_symbol_type *) NULL \
3866 && coffsym->native->u.syment.n_scnum == 0) \
3867 cache_ptr->addend = 0; \
3868 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
3869 && ptr->section != (asection *) NULL) \
3870 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
3872 cache_ptr->addend = 0; \
3877 coff_slurp_reloc_table (abfd, asect, symbols)
3882 RELOC *native_relocs;
3883 arelent *reloc_cache;
3888 if (asect->relocation)
3890 if (asect->reloc_count == 0)
3892 if (asect->flags & SEC_CONSTRUCTOR)
3894 if (!coff_slurp_symbol_table (abfd))
3897 (RELOC *) buy_and_read (abfd,
3901 asect->reloc_count));
3902 reloc_cache = (arelent *)
3903 bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent)));
3905 if (reloc_cache == NULL)
3909 for (idx = 0; idx < asect->reloc_count; idx++)
3911 struct internal_reloc dst;
3912 struct external_reloc *src;
3913 #ifndef RELOC_PROCESSING
3917 cache_ptr = reloc_cache + idx;
3918 src = native_relocs + idx;
3920 coff_swap_reloc_in (abfd, src, &dst);
3922 #ifdef RELOC_PROCESSING
3923 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
3925 cache_ptr->address = dst.r_vaddr;
3927 if (dst.r_symndx != -1)
3929 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
3931 (*_bfd_error_handler)
3932 (_("%s: warning: illegal symbol index %ld in relocs"),
3933 bfd_get_filename (abfd), dst.r_symndx);
3934 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
3939 cache_ptr->sym_ptr_ptr = (symbols
3940 + obj_convert (abfd)[dst.r_symndx]);
3941 ptr = *(cache_ptr->sym_ptr_ptr);
3946 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
3950 /* The symbols definitions that we have read in have been
3951 relocated as if their sections started at 0. But the offsets
3952 refering to the symbols in the raw data have not been
3953 modified, so we have to have a negative addend to compensate.
3955 Note that symbols which used to be common must be left alone */
3957 /* Calculate any reloc addend by looking at the symbol */
3958 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
3960 cache_ptr->address -= asect->vma;
3961 /* !! cache_ptr->section = (asection *) NULL;*/
3963 /* Fill in the cache_ptr->howto field from dst.r_type */
3964 RTYPE2HOWTO (cache_ptr, &dst);
3965 #endif /* RELOC_PROCESSING */
3967 if (cache_ptr->howto == NULL)
3969 (*_bfd_error_handler)
3970 (_("%s: illegal relocation type %d at address 0x%lx"),
3971 bfd_get_filename (abfd), dst.r_type, (long) dst.r_vaddr);
3972 bfd_set_error (bfd_error_bad_value);
3977 asect->relocation = reloc_cache;
3981 #ifndef coff_rtype_to_howto
3984 /* Get the howto structure for a reloc. This is only used if the file
3985 including this one defines coff_relocate_section to be
3986 _bfd_coff_generic_relocate_section, so it is OK if it does not
3987 always work. It is the responsibility of the including file to
3988 make sure it is reasonable if it is needed. */
3990 static reloc_howto_type *coff_rtype_to_howto
3991 PARAMS ((bfd *, asection *, struct internal_reloc *,
3992 struct coff_link_hash_entry *, struct internal_syment *,
3996 static reloc_howto_type *
3997 coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
4000 struct internal_reloc *rel;
4001 struct coff_link_hash_entry *h;
4002 struct internal_syment *sym;
4007 RTYPE2HOWTO (&genrel, rel);
4008 return genrel.howto;
4011 #else /* ! defined (RTYPE2HOWTO) */
4013 #define coff_rtype_to_howto NULL
4015 #endif /* ! defined (RTYPE2HOWTO) */
4016 #endif /* ! defined (coff_rtype_to_howto) */
4018 /* This is stupid. This function should be a boolean predicate. */
4020 coff_canonicalize_reloc (abfd, section, relptr, symbols)
4026 arelent *tblptr = section->relocation;
4027 unsigned int count = 0;
4030 if (section->flags & SEC_CONSTRUCTOR)
4032 /* this section has relocs made up by us, they are not in the
4033 file, so take them out of their chain and place them into
4034 the data area provided */
4035 arelent_chain *chain = section->constructor_chain;
4036 for (count = 0; count < section->reloc_count; count++)
4038 *relptr++ = &chain->relent;
4039 chain = chain->next;
4045 if (! coff_slurp_reloc_table (abfd, section, symbols))
4048 tblptr = section->relocation;
4050 for (; count++ < section->reloc_count;)
4051 *relptr++ = tblptr++;
4056 return section->reloc_count;
4061 coff_sym_filepos (abfd)
4064 return obj_sym_filepos (abfd);
4068 #ifndef coff_reloc16_estimate
4069 #define coff_reloc16_estimate dummy_reloc16_estimate
4071 static int dummy_reloc16_estimate
4072 PARAMS ((bfd *, asection *, arelent *, unsigned int,
4073 struct bfd_link_info *));
4076 dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
4078 asection *input_section;
4080 unsigned int shrink;
4081 struct bfd_link_info *link_info;
4088 #ifndef coff_reloc16_extra_cases
4090 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
4092 /* This works even if abort is not declared in any header file. */
4094 static void dummy_reloc16_extra_cases
4095 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
4096 bfd_byte *, unsigned int *, unsigned int *));
4099 dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
4102 struct bfd_link_info *link_info;
4103 struct bfd_link_order *link_order;
4106 unsigned int *src_ptr;
4107 unsigned int *dst_ptr;
4113 /* If coff_relocate_section is defined, we can use the optimized COFF
4114 backend linker. Otherwise we must continue to use the old linker. */
4115 #ifdef coff_relocate_section
4116 #ifndef coff_bfd_link_hash_table_create
4117 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
4119 #ifndef coff_bfd_link_add_symbols
4120 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
4122 #ifndef coff_bfd_final_link
4123 #define coff_bfd_final_link _bfd_coff_final_link
4125 #else /* ! defined (coff_relocate_section) */
4126 #define coff_relocate_section NULL
4127 #ifndef coff_bfd_link_hash_table_create
4128 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
4130 #ifndef coff_bfd_link_add_symbols
4131 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
4133 #define coff_bfd_final_link _bfd_generic_final_link
4134 #endif /* ! defined (coff_relocate_section) */
4136 #define coff_bfd_link_split_section _bfd_generic_link_split_section
4138 #ifndef coff_start_final_link
4139 #define coff_start_final_link NULL
4142 #ifndef coff_adjust_symndx
4143 #define coff_adjust_symndx NULL
4146 #ifndef coff_link_add_one_symbol
4147 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
4150 #ifndef coff_link_output_has_begun
4152 static boolean coff_link_output_has_begun
4153 PARAMS ((bfd *, struct coff_final_link_info *));
4156 coff_link_output_has_begun (abfd, info)
4158 struct coff_final_link_info * info;
4160 return abfd->output_has_begun;
4164 #ifndef coff_final_link_postscript
4166 static boolean coff_final_link_postscript
4167 PARAMS ((bfd *, struct coff_final_link_info *));
4170 coff_final_link_postscript (abfd, pfinfo)
4172 struct coff_final_link_info * pfinfo;
4178 #ifndef coff_SWAP_aux_in
4179 #define coff_SWAP_aux_in coff_swap_aux_in
4181 #ifndef coff_SWAP_sym_in
4182 #define coff_SWAP_sym_in coff_swap_sym_in
4184 #ifndef coff_SWAP_lineno_in
4185 #define coff_SWAP_lineno_in coff_swap_lineno_in
4187 #ifndef coff_SWAP_aux_out
4188 #define coff_SWAP_aux_out coff_swap_aux_out
4190 #ifndef coff_SWAP_sym_out
4191 #define coff_SWAP_sym_out coff_swap_sym_out
4193 #ifndef coff_SWAP_lineno_out
4194 #define coff_SWAP_lineno_out coff_swap_lineno_out
4196 #ifndef coff_SWAP_reloc_out
4197 #define coff_SWAP_reloc_out coff_swap_reloc_out
4199 #ifndef coff_SWAP_filehdr_out
4200 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
4202 #ifndef coff_SWAP_aouthdr_out
4203 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
4205 #ifndef coff_SWAP_scnhdr_out
4206 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
4208 #ifndef coff_SWAP_reloc_in
4209 #define coff_SWAP_reloc_in coff_swap_reloc_in
4211 #ifndef coff_SWAP_filehdr_in
4212 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
4214 #ifndef coff_SWAP_aouthdr_in
4215 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
4217 #ifndef coff_SWAP_scnhdr_in
4218 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
4223 static CONST bfd_coff_backend_data bfd_coff_std_swap_table =
4225 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
4226 coff_SWAP_aux_out, coff_SWAP_sym_out,
4227 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
4228 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
4229 coff_SWAP_scnhdr_out,
4230 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ,
4231 #ifdef COFF_LONG_FILENAMES
4236 #ifdef COFF_LONG_SECTION_NAMES
4241 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
4242 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
4243 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
4244 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
4245 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
4246 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
4247 coff_sym_is_global, coff_compute_section_file_positions,
4248 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
4249 coff_adjust_symndx, coff_link_add_one_symbol,
4250 coff_link_output_has_begun, coff_final_link_postscript
4253 #ifndef coff_close_and_cleanup
4254 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
4257 #ifndef coff_bfd_free_cached_info
4258 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
4261 #ifndef coff_get_section_contents
4262 #define coff_get_section_contents _bfd_generic_get_section_contents
4265 #ifndef coff_bfd_copy_private_symbol_data
4266 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
4269 #ifndef coff_bfd_copy_private_section_data
4270 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
4273 #ifndef coff_bfd_copy_private_bfd_data
4274 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
4277 #ifndef coff_bfd_merge_private_bfd_data
4278 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
4281 #ifndef coff_bfd_set_private_flags
4282 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
4285 #ifndef coff_bfd_print_private_bfd_data
4286 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
4289 #ifndef coff_bfd_is_local_label_name
4290 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
4293 #ifndef coff_read_minisymbols
4294 #define coff_read_minisymbols _bfd_generic_read_minisymbols
4297 #ifndef coff_minisymbol_to_symbol
4298 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
4301 /* The reloc lookup routine must be supplied by each individual COFF
4303 #ifndef coff_bfd_reloc_type_lookup
4304 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
4307 #ifndef coff_bfd_get_relocated_section_contents
4308 #define coff_bfd_get_relocated_section_contents \
4309 bfd_generic_get_relocated_section_contents
4312 #ifndef coff_bfd_relax_section
4313 #define coff_bfd_relax_section bfd_generic_relax_section
4316 #ifndef coff_bfd_gc_sections
4317 #define coff_bfd_gc_sections bfd_generic_gc_sections