1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright 1990, 91, 92, 93, 94, 1995 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 Most of this hacked by Steve Chamberlain,
30 BFD supports a number of different flavours of coff format.
31 The major differences between formats are the sizes and
32 alignments of fields in structures on disk, and the occasional
35 Coff in all its varieties is implemented with a few common
36 files and a number of implementation specific files. For
37 example, The 88k bcs coff format is implemented in the file
38 @file{coff-m88k.c}. This file @code{#include}s
39 @file{coff/m88k.h} which defines the external structure of the
40 coff format for the 88k, and @file{coff/internal.h} which
41 defines the internal structure. @file{coff-m88k.c} also
42 defines the relocations used by the 88k format
45 The Intel i960 processor version of coff is implemented in
46 @file{coff-i960.c}. This file has the same structure as
47 @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
48 rather than @file{coff-m88k.h}.
51 Porting to a new version of coff
53 The recommended method is to select from the existing
54 implementations the version of coff which is most like the one
55 you want to use. For example, we'll say that i386 coff is
56 the one you select, and that your coff flavour is called foo.
57 Copy @file{i386coff.c} to @file{foocoff.c}, copy
58 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
59 and add the lines to @file{targets.c} and @file{Makefile.in}
60 so that your new back end is used. Alter the shapes of the
61 structures in @file{../include/coff/foo.h} so that they match
62 what you need. You will probably also have to add
63 @code{#ifdef}s to the code in @file{coff/internal.h} and
64 @file{coffcode.h} if your version of coff is too wild.
66 You can verify that your new BFD backend works quite simply by
67 building @file{objdump} from the @file{binutils} directory,
68 and making sure that its version of what's going on and your
69 host system's idea (assuming it has the pretty standard coff
70 dump utility, usually called @code{att-dump} or just
71 @code{dump}) are the same. Then clean up your code, and send
72 what you've done to Cygnus. Then your stuff will be in the
73 next release, and you won't have to keep integrating it.
76 How the coff backend works
81 The Coff backend is split into generic routines that are
82 applicable to any Coff target and routines that are specific
83 to a particular target. The target-specific routines are
84 further split into ones which are basically the same for all
85 Coff targets except that they use the external symbol format
86 or use different values for certain constants.
88 The generic routines are in @file{coffgen.c}. These routines
89 work for any Coff target. They use some hooks into the target
90 specific code; the hooks are in a @code{bfd_coff_backend_data}
91 structure, one of which exists for each target.
93 The essentially similar target-specific routines are in
94 @file{coffcode.h}. This header file includes executable C code.
95 The various Coff targets first include the appropriate Coff
96 header file, make any special defines that are needed, and
97 then include @file{coffcode.h}.
99 Some of the Coff targets then also have additional routines in
100 the target source file itself.
102 For example, @file{coff-i960.c} includes
103 @file{coff/internal.h} and @file{coff/i960.h}. It then
104 defines a few constants, such as @code{I960}, and includes
105 @file{coffcode.h}. Since the i960 has complex relocation
106 types, @file{coff-i960.c} also includes some code to
107 manipulate the i960 relocs. This code is not in
108 @file{coffcode.h} because it would not be used by any other
114 Each flavour of coff supported in BFD has its own header file
115 describing the external layout of the structures. There is also
116 an internal description of the coff layout, in
117 @file{coff/internal.h}. A major function of the
118 coff backend is swapping the bytes and twiddling the bits to
119 translate the external form of the structures into the normal
120 internal form. This is all performed in the
121 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
122 elements are different sizes between different versions of
123 coff; it is the duty of the coff version specific include file
124 to override the definitions of various packing routines in
125 @file{coffcode.h}. E.g., the size of line number entry in coff is
126 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
127 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
128 correct one. No doubt, some day someone will find a version of
129 coff which has a varying field size not catered to at the
130 moment. To port BFD, that person will have to add more @code{#defines}.
131 Three of the bit twiddling routines are exported to
132 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
133 and @code{coff_swap_linno_in}. @code{GDB} reads the symbol
134 table on its own, but uses BFD to fix things up. More of the
135 bit twiddlers are exported for @code{gas};
136 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
137 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
138 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
139 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
140 of all the symbol table and reloc drudgery itself, thereby
141 saving the internal BFD overhead, but uses BFD to swap things
142 on the way out, making cross ports much safer. Doing so also
143 allows BFD (and thus the linker) to use the same header files
144 as @code{gas}, which makes one avenue to disaster disappear.
149 The simple canonical form for symbols used by BFD is not rich
150 enough to keep all the information available in a coff symbol
151 table. The back end gets around this problem by keeping the original
152 symbol table around, "behind the scenes".
154 When a symbol table is requested (through a call to
155 @code{bfd_canonicalize_symtab}), a request gets through to
156 @code{coff_get_normalized_symtab}. This reads the symbol table from
157 the coff file and swaps all the structures inside into the
158 internal form. It also fixes up all the pointers in the table
159 (represented in the file by offsets from the first symbol in
160 the table) into physical pointers to elements in the new
161 internal table. This involves some work since the meanings of
162 fields change depending upon context: a field that is a
163 pointer to another structure in the symbol table at one moment
164 may be the size in bytes of a structure at the next. Another
165 pass is made over the table. All symbols which mark file names
166 (<<C_FILE>> symbols) are modified so that the internal
167 string points to the value in the auxent (the real filename)
168 rather than the normal text associated with the symbol
171 At this time the symbol names are moved around. Coff stores
172 all symbols less than nine characters long physically
173 within the symbol table; longer strings are kept at the end of
174 the file in the string table. This pass moves all strings
175 into memory and replaces them with pointers to the strings.
178 The symbol table is massaged once again, this time to create
179 the canonical table used by the BFD application. Each symbol
180 is inspected in turn, and a decision made (using the
181 @code{sclass} field) about the various flags to set in the
182 @code{asymbol}. @xref{Symbols}. The generated canonical table
183 shares strings with the hidden internal symbol table.
185 Any linenumbers are read from the coff file too, and attached
186 to the symbols which own the functions the linenumbers belong to.
191 Writing a symbol to a coff file which didn't come from a coff
192 file will lose any debugging information. The @code{asymbol}
193 structure remembers the BFD from which the symbol was taken, and on
194 output the back end makes sure that the same destination target as
195 source target is present.
197 When the symbols have come from a coff file then all the
198 debugging information is preserved.
200 Symbol tables are provided for writing to the back end in a
201 vector of pointers to pointers. This allows applications like
202 the linker to accumulate and output large symbol tables
203 without having to do too much byte copying.
205 This function runs through the provided symbol table and
206 patches each symbol marked as a file place holder
207 (@code{C_FILE}) to point to the next file place holder in the
208 list. It also marks each @code{offset} field in the list with
209 the offset from the first symbol of the current symbol.
211 Another function of this procedure is to turn the canonical
212 value form of BFD into the form used by coff. Internally, BFD
213 expects symbol values to be offsets from a section base; so a
214 symbol physically at 0x120, but in a section starting at
215 0x100, would have the value 0x20. Coff expects symbols to
216 contain their final value, so symbols have their values
217 changed at this point to reflect their sum with their owning
218 section. This transformation uses the
219 <<output_section>> field of the @code{asymbol}'s
220 @code{asection} @xref{Sections}.
222 o <<coff_mangle_symbols>>
224 This routine runs though the provided symbol table and uses
225 the offsets generated by the previous pass and the pointers
226 generated when the symbol table was read in to create the
227 structured hierachy required by coff. It changes each pointer
228 to a symbol into the index into the symbol table of the asymbol.
230 o <<coff_write_symbols>>
232 This routine runs through the symbol table and patches up the
233 symbols from their internal form into the coff way, calls the
234 bit twiddlers, and writes out the table to the file.
243 The hidden information for an <<asymbol>> is described in a
244 <<combined_entry_type>>:
248 .typedef struct coff_ptr_struct
251 . {* Remembers the offset from the first symbol in the file for
252 . this symbol. Generated by coff_renumber_symbols. *}
253 .unsigned int offset;
255 . {* Should the value of this symbol be renumbered. Used for
256 . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
257 .unsigned int fix_value : 1;
259 . {* Should the tag field of this symbol be renumbered.
260 . Created by coff_pointerize_aux. *}
261 .unsigned int fix_tag : 1;
263 . {* Should the endidx field of this symbol be renumbered.
264 . Created by coff_pointerize_aux. *}
265 .unsigned int fix_end : 1;
267 . {* Should the x_csect.x_scnlen field be renumbered.
268 . Created by coff_slurp_symbol_table. *}
269 .unsigned int fix_scnlen : 1;
271 . {* The container for the symbol structure as read and translated
275 . union internal_auxent auxent;
276 . struct internal_syment syment;
278 .} combined_entry_type;
281 .{* Each canonical asymbol really looks like this: *}
283 .typedef struct coff_symbol_struct
285 . {* The actual symbol which the rest of BFD works with *}
288 . {* A pointer to the hidden information for this symbol *}
289 .combined_entry_type *native;
291 . {* A pointer to the linenumber information for this symbol *}
292 .struct lineno_cache_entry *lineno;
294 . {* Have the line numbers been relocated yet ? *}
295 .boolean done_lineno;
301 #if defined(COFF_IMAGE_WITH_PE) || (defined(COFF_OBJ_WITH_PE) && defined(PPC))
304 #include "coffswap.h"
308 /* void warning(); */
311 * Return a word with STYP_* (scnhdr.s_flags) flags set to represent the
312 * incoming SEC_* flags. The inverse of this function is styp_to_sec_flags().
313 * NOTE: If you add to/change this routine, you should mirror the changes
314 * in styp_to_sec_flags().
317 sec_to_styp_flags (sec_name, sec_flags)
318 CONST char *sec_name;
323 if (!strcmp (sec_name, _TEXT))
325 styp_flags = STYP_TEXT;
327 else if (!strcmp (sec_name, _DATA))
329 styp_flags = STYP_DATA;
331 else if (!strcmp (sec_name, _BSS))
333 styp_flags = STYP_BSS;
336 else if (!strcmp (sec_name, _COMMENT))
338 styp_flags = STYP_INFO;
339 #endif /* _COMMENT */
342 else if (!strcmp (sec_name, _LIB))
344 styp_flags = STYP_LIB;
348 else if (!strcmp (sec_name, _LIT))
350 styp_flags = STYP_LIT;
353 else if (!strcmp (sec_name, ".debug"))
356 styp_flags = STYP_DEBUG;
358 styp_flags = STYP_INFO;
361 else if (!strncmp (sec_name, ".stab", 5))
363 styp_flags = STYP_INFO;
366 else if (!strcmp (sec_name, ".edata"))
368 styp_flags = STYP_DATA;
371 /* Try and figure out what it should be */
372 else if (sec_flags & SEC_CODE)
374 styp_flags = STYP_TEXT;
376 else if (sec_flags & SEC_DATA)
378 styp_flags = STYP_DATA;
380 else if (sec_flags & SEC_READONLY)
382 #ifdef STYP_LIT /* 29k readonly text/data section */
383 styp_flags = STYP_LIT;
385 styp_flags = STYP_TEXT;
386 #endif /* STYP_LIT */
388 else if (sec_flags & SEC_LOAD)
390 styp_flags = STYP_TEXT;
392 else if (sec_flags & SEC_ALLOC)
394 styp_flags = STYP_BSS;
398 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
399 styp_flags |= STYP_NOLOAD;
405 * Return a word with SEC_* flags set to represent the incoming
406 * STYP_* flags (from scnhdr.s_flags). The inverse of this
407 * function is sec_to_styp_flags().
408 * NOTE: If you add to/change this routine, you should mirror the changes
409 * in sec_to_styp_flags().
412 styp_to_sec_flags (abfd, hdr, name)
417 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
418 long styp_flags = internal_s->s_flags;
419 flagword sec_flags = 0;
422 if (styp_flags & STYP_NOLOAD)
424 sec_flags |= SEC_NEVER_LOAD;
426 #endif /* STYP_NOLOAD */
428 /* For 386 COFF, at least, an unloadable text or data section is
429 actually a shared library section. */
430 if (styp_flags & STYP_TEXT)
432 if (sec_flags & SEC_NEVER_LOAD)
433 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
435 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
437 else if (styp_flags & STYP_DATA)
439 if (sec_flags & SEC_NEVER_LOAD)
440 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
442 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
444 else if (styp_flags & STYP_BSS)
446 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
447 if (sec_flags & SEC_NEVER_LOAD)
448 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
451 sec_flags |= SEC_ALLOC;
453 else if (styp_flags & STYP_INFO)
455 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
456 defined. coff_compute_section_file_positions uses
457 COFF_PAGE_SIZE to ensure that the low order bits of the
458 section VMA and the file offset match. If we don't know
459 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
460 and demand page loading of the file will fail. */
461 #ifdef COFF_PAGE_SIZE
462 sec_flags |= SEC_DEBUGGING;
465 else if (strcmp (name, _TEXT) == 0)
467 if (sec_flags & SEC_NEVER_LOAD)
468 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
470 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
472 else if (strcmp (name, _DATA) == 0)
474 if (sec_flags & SEC_NEVER_LOAD)
475 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
477 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
479 else if (strcmp (name, _BSS) == 0)
481 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
482 if (sec_flags & SEC_NEVER_LOAD)
483 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
486 sec_flags |= SEC_ALLOC;
488 else if (strcmp (name, ".debug") == 0
490 || strcmp (name, _COMMENT) == 0
492 || strncmp (name, ".stab", 5) == 0)
494 #ifdef COFF_PAGE_SIZE
495 sec_flags |= SEC_DEBUGGING;
499 else if (strcmp (name, _LIB) == 0)
503 else if (strcmp (name, _LIT) == 0)
505 sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY;
510 sec_flags |= SEC_ALLOC | SEC_LOAD;
513 #ifdef STYP_LIT /* A29k readonly text/data section type */
514 if ((styp_flags & STYP_LIT) == STYP_LIT)
516 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
518 #endif /* STYP_LIT */
519 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
520 if (styp_flags & STYP_OTHER_LOAD)
522 sec_flags = (SEC_LOAD | SEC_ALLOC);
524 #endif /* STYP_SDATA */
529 #define get_index(symbol) ((symbol)->udata.i)
533 bfd_coff_backend_data
537 Special entry points for gdb to swap in coff symbol table parts:
540 . void (*_bfd_coff_swap_aux_in) PARAMS ((
549 . void (*_bfd_coff_swap_sym_in) PARAMS ((
554 . void (*_bfd_coff_swap_lineno_in) PARAMS ((
560 Special entry points for gas to swap out coff parts:
562 . unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
571 . unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
576 . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
581 . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
586 . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
591 . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
596 . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
602 Special entry points for generic COFF routines to call target
603 dependent COFF routines:
605 . unsigned int _bfd_filhsz;
606 . unsigned int _bfd_aoutsz;
607 . unsigned int _bfd_scnhsz;
608 . unsigned int _bfd_symesz;
609 . unsigned int _bfd_auxesz;
610 . unsigned int _bfd_relsz;
611 . unsigned int _bfd_linesz;
612 . boolean _bfd_coff_long_filenames;
613 . void (*_bfd_coff_swap_filehdr_in) PARAMS ((
617 . void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
621 . void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
625 . void (*_bfd_coff_swap_reloc_in) PARAMS ((
629 . boolean (*_bfd_coff_bad_format_hook) PARAMS ((
631 . PTR internal_filehdr));
632 . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
634 . PTR internal_filehdr));
635 . PTR (*_bfd_coff_mkobject_hook) PARAMS ((
637 . PTR internal_filehdr,
638 . PTR internal_aouthdr));
639 . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
641 . PTR internal_scnhdr,
642 . const char *name));
643 . void (*_bfd_set_alignment_hook) PARAMS ((
646 . PTR internal_scnhdr));
647 . boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
649 . boolean (*_bfd_coff_symname_in_debug) PARAMS ((
651 . struct internal_syment *sym));
652 . void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
654 . struct bfd_link_info *link_info,
655 . struct bfd_link_order *link_order,
658 . unsigned int *src_ptr,
659 . unsigned int *dst_ptr));
660 . int (*_bfd_coff_reloc16_estimate) PARAMS ((
662 . asection *input_section,
664 . unsigned int shrink,
665 . struct bfd_link_info *link_info));
666 . boolean (*_bfd_coff_sym_is_global) PARAMS ((
668 . struct internal_syment *));
669 . void (*_bfd_coff_compute_section_file_positions) PARAMS ((
671 . boolean (*_bfd_coff_start_final_link) PARAMS ((
673 . struct bfd_link_info *info));
674 . boolean (*_bfd_coff_relocate_section) PARAMS ((
676 . struct bfd_link_info *info,
678 . asection *input_section,
679 . bfd_byte *contents,
680 . struct internal_reloc *relocs,
681 . struct internal_syment *syms,
682 . asection **sections));
683 . reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
686 . struct internal_reloc *rel,
687 . struct coff_link_hash_entry *h,
688 . struct internal_syment *sym,
689 . bfd_vma *addendp));
690 . boolean (*_bfd_coff_adjust_symndx) PARAMS ((
692 . struct bfd_link_info *info,
695 . struct internal_reloc *reloc,
696 . boolean *adjustedp));
698 .} bfd_coff_backend_data;
700 .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
702 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
703 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
705 .#define bfd_coff_swap_sym_in(a,e,i) \
706 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
708 .#define bfd_coff_swap_lineno_in(a,e,i) \
709 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
711 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
712 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
714 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
715 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
717 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
718 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
720 .#define bfd_coff_swap_sym_out(abfd, i,o) \
721 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
723 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
724 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
726 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
727 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
729 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
730 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
732 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
733 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
734 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
735 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
736 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
737 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
738 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
739 .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
740 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
741 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
743 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
744 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
746 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
747 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
749 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
750 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
752 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
753 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
755 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
756 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
757 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
758 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
760 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
761 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
763 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
764 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
766 .#define bfd_coff_slurp_symbol_table(abfd)\
767 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
769 .#define bfd_coff_symname_in_debug(abfd, sym)\
770 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
772 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
773 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
774 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
776 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
777 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
778 . (abfd, section, reloc, shrink, link_info))
780 .#define bfd_coff_sym_is_global(abfd, sym)\
781 . ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
784 .#define bfd_coff_compute_section_file_positions(abfd)\
785 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
788 .#define bfd_coff_start_final_link(obfd, info)\
789 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
791 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
792 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
793 . (obfd, info, ibfd, o, con, rel, isyms, secs))
794 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
795 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
796 . (abfd, sec, rel, h, sym, addendp))
797 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
798 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
799 . (obfd, info, ibfd, sec, rel, adjustedp))
803 /* See whether the magic number matches. */
806 coff_bad_format_hook (abfd, filehdr)
810 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
812 if (BADMAG (*internal_f))
815 /* if the optional header is NULL or not the correct size then
816 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
817 and Intel 960 readwrite headers (I960WRMAGIC) is that the
818 optional header is of a different size.
820 But the mips keeps extra stuff in it's opthdr, so dont check
824 #if defined(M88) || defined(I960)
825 if (internal_f->f_opthdr != 0 && AOUTSZ != internal_f->f_opthdr)
833 initialize a section structure with information peculiar to this
834 particular implementation of coff
838 coff_new_section_hook (abfd, section)
842 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
844 /* Allocate aux records for section symbols, to store size and
847 @@ Shouldn't use constant multiplier here! */
848 coffsymbol (section->symbol)->native =
849 (combined_entry_type *) bfd_zalloc (abfd,
850 sizeof (combined_entry_type) * 10);
852 /* The .stab section must be aligned to 2**2 at most, because
853 otherwise there may be gaps in the section which gdb will not
854 know how to interpret. Examining the section name is a hack, but
855 that is also how gdb locates the section.
856 We need to handle the .ctors and .dtors sections similarly, to
857 avoid introducing null words in the tables. */
858 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER > 2
859 && (strncmp (section->name, ".stab", 5) == 0
860 || strcmp (section->name, ".ctors") == 0
861 || strcmp (section->name, ".dtors") == 0))
862 section->alignment_power = 2;
869 /* Set the alignment of a BFD section. */
872 coff_set_alignment_hook (abfd, section, scnhdr)
877 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
880 for (i = 0; i < 32; i++)
881 if ((1 << i) >= hdr->s_align)
883 section->alignment_power = i;
888 #define coff_set_alignment_hook \
889 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
893 #ifndef coff_mkobject
898 coff_data_type *coff;
900 abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, sizeof (coff_data_type));
901 if (abfd->tdata.coff_obj_data == 0)
903 bfd_set_error (bfd_error_no_memory);
906 coff = coff_data (abfd);
907 coff->symbols = (coff_symbol_type *) NULL;
908 coff->conversion_table = (unsigned int *) NULL;
909 coff->raw_syments = (struct coff_ptr_struct *) NULL;
911 /* make_abs_section(abfd);*/
917 /* Create the COFF backend specific information. */
918 #ifndef coff_mkobject_hook
920 coff_mkobject_hook (abfd, filehdr, aouthdr)
925 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
926 coff_data_type *coff;
928 if (coff_mkobject (abfd) == false)
931 coff = coff_data (abfd);
933 coff->sym_filepos = internal_f->f_symptr;
935 /* These members communicate important constants about the symbol
936 table to GDB's symbol-reading code. These `constants'
937 unfortunately vary among coff implementations... */
938 coff->local_n_btmask = N_BTMASK;
939 coff->local_n_btshft = N_BTSHFT;
940 coff->local_n_tmask = N_TMASK;
941 coff->local_n_tshift = N_TSHIFT;
942 coff->local_symesz = SYMESZ;
943 coff->local_auxesz = AUXESZ;
944 coff->local_linesz = LINESZ;
946 obj_raw_syment_count (abfd) =
947 obj_conv_table_size (abfd) =
954 /* Determine the machine architecture and type. FIXME: This is target
955 dependent because the magic numbers are defined in the target
956 dependent header files. But there is no particular need for this.
957 If the magic numbers were moved to a separate file, this function
958 would be target independent and would also be much more successful
959 at linking together COFF files for different architectures. */
962 coff_set_arch_mach_hook (abfd, filehdr)
967 enum bfd_architecture arch;
968 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
971 switch (internal_f->f_magic)
975 arch = bfd_arch_powerpc;
976 machine = 0; /* what does this mean? (krk) */
982 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */
983 case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */
984 arch = bfd_arch_i386;
988 #ifdef A29K_MAGIC_BIG
990 case A29K_MAGIC_LITTLE:
991 arch = bfd_arch_a29k;
1004 #ifdef MC68KBCSMAGIC
1007 #ifdef APOLLOM68KMAGIC
1008 case APOLLOM68KMAGIC:
1010 #ifdef LYNXCOFFMAGIC
1013 arch = bfd_arch_m68k;
1021 arch = bfd_arch_m88k;
1027 arch = bfd_arch_z8k;
1028 switch (internal_f->f_flags & F_MACHMASK)
1031 machine = bfd_mach_z8001;
1034 machine = bfd_mach_z8002;
1045 arch = bfd_arch_i960;
1046 switch (F_I960TYPE & internal_f->f_flags)
1050 machine = bfd_mach_i960_core;
1053 machine = bfd_mach_i960_kb_sb;
1056 machine = bfd_mach_i960_mc;
1059 machine = bfd_mach_i960_xa;
1062 machine = bfd_mach_i960_ca;
1065 machine = bfd_mach_i960_ka_sa;
1067 /* start-sanitize-i960xl */
1069 machine = bfd_mach_i960_xl;
1071 /* end-sanitize-i960xl */
1082 /* PowerPC Macs use the same magic numbers as RS/6000 (because
1083 that's how they were bootstrapped originally), but they are
1084 always PowerPC architecture. */
1085 arch = bfd_arch_powerpc;
1088 /* FIXME The architecture and machine can now (as of AIX 4.1) be
1089 identified by looking at fields in the a.out header. */
1090 arch = bfd_arch_rs6000;
1092 #endif /* POWERMAC */
1098 arch = bfd_arch_we32k;
1105 arch = bfd_arch_h8300;
1106 machine = bfd_mach_h8300;
1107 /* !! FIXME this probably isn't the right place for this */
1108 abfd->flags |= BFD_IS_RELAXABLE;
1114 arch = bfd_arch_h8300;
1115 machine = bfd_mach_h8300h;
1116 /* !! FIXME this probably isn't the right place for this */
1117 abfd->flags |= BFD_IS_RELAXABLE;
1121 #ifdef SH_ARCH_MAGIC_BIG
1122 case SH_ARCH_MAGIC_BIG:
1123 case SH_ARCH_MAGIC_LITTLE:
1131 arch = bfd_arch_h8500;
1138 #ifdef LYNXCOFFMAGIC
1141 arch = bfd_arch_sparc;
1146 default: /* Unreadable input file type */
1147 arch = bfd_arch_obscure;
1151 bfd_default_set_arch_mach (abfd, arch, machine);
1155 #ifdef SYMNAME_IN_DEBUG
1158 symname_in_debug_hook (abfd, sym)
1160 struct internal_syment *sym;
1162 return SYMNAME_IN_DEBUG (sym) ? true : false;
1167 #define symname_in_debug_hook \
1168 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
1176 To write relocations, the back end steps though the
1177 canonical relocation table and create an
1178 @code{internal_reloc}. The symbol index to use is removed from
1179 the @code{offset} field in the symbol table supplied. The
1180 address comes directly from the sum of the section base
1181 address and the relocation offset; the type is dug directly
1182 from the howto field. Then the @code{internal_reloc} is
1183 swapped into the shape of an @code{external_reloc} and written
1189 coff_write_relocs (abfd, first_undef)
1194 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
1197 struct external_reloc dst;
1199 arelent **p = s->orelocation;
1200 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
1202 for (i = 0; i < s->reloc_count; i++)
1204 struct internal_reloc n;
1206 memset ((PTR) & n, 0, sizeof (n));
1208 /* Now we've renumbered the symbols we know where the
1209 undefined symbols live in the table. Check the reloc
1210 entries for symbols who's output bfd isn't the right one.
1211 This is because the symbol was undefined (which means
1212 that all the pointers are never made to point to the same
1213 place). This is a bad thing,'cause the symbols attached
1214 to the output bfd are indexed, so that the relocation
1215 entries know which symbol index they point to. So we
1216 have to look up the output symbol here. */
1218 if (q->sym_ptr_ptr[0]->the_bfd != abfd)
1221 const char *sname = q->sym_ptr_ptr[0]->name;
1222 asymbol **outsyms = abfd->outsymbols;
1223 for (i = first_undef; outsyms[i]; i++)
1225 const char *intable = outsyms[i]->name;
1226 if (strcmp (intable, sname) == 0) {
1227 /* got a hit, so repoint the reloc */
1228 q->sym_ptr_ptr = outsyms + i;
1234 n.r_vaddr = q->address + s->vma;
1237 /* The 29k const/consth reloc pair is a real kludge. The consth
1238 part doesn't have a symbol; it has an offset. So rebuilt
1240 if (q->howto->type == R_IHCONST)
1241 n.r_symndx = q->addend;
1246 if (q->sym_ptr_ptr == bfd_abs_section_ptr->symbol_ptr_ptr)
1247 /* This is a relocation relative to the absolute symbol. */
1251 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
1252 /* Take notice if the symbol reloc points to a symbol
1253 we don't have in our symbol table. What should we
1255 if (n.r_symndx > obj_conv_table_size (abfd))
1260 #ifdef SWAP_OUT_RELOC_OFFSET
1261 n.r_offset = q->addend;
1265 /* Work out reloc type from what is required */
1266 SELECT_RELOC (n, q->howto);
1268 n.r_type = q->howto->type;
1270 coff_swap_reloc_out (abfd, &n, &dst);
1271 if (bfd_write ((PTR) & dst, 1, RELSZ, abfd) != RELSZ)
1279 /* Set flags and magic number of a coff file from architecture and machine
1280 type. Result is true if we can represent the arch&type, false if not. */
1283 coff_set_flags (abfd, magicp, flagsp)
1286 unsigned short *flagsp;
1288 switch (bfd_get_arch (abfd))
1293 switch (bfd_get_mach (abfd))
1295 case bfd_mach_z8001:
1298 case bfd_mach_z8002:
1312 *magicp = I960ROMAGIC;
1314 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
1315 I960RWMAGIC); FIXME???
1317 switch (bfd_get_mach (abfd))
1319 case bfd_mach_i960_core:
1322 case bfd_mach_i960_kb_sb:
1325 case bfd_mach_i960_mc:
1328 case bfd_mach_i960_xa:
1331 case bfd_mach_i960_ca:
1334 case bfd_mach_i960_ka_sa:
1337 /* start-sanitize-i960xl */
1338 case bfd_mach_i960_xl:
1341 /* end-sanitize-i960xl */
1356 case bfd_arch_powerpc:
1363 *magicp = I386MAGIC;
1365 /* Just overwrite the usual value if we're doing Lynx. */
1366 *magicp = LYNXCOFFMAGIC;
1373 #ifdef APOLLOM68KMAGIC
1374 *magicp = APOLLO_COFF_VERSION_NUMBER;
1376 *magicp = MC68MAGIC;
1379 /* Just overwrite the usual value if we're doing Lynx. */
1380 *magicp = LYNXCOFFMAGIC;
1388 *magicp = MC88OMAGIC;
1393 case bfd_arch_h8300:
1394 switch (bfd_get_mach (abfd))
1396 case bfd_mach_h8300:
1397 *magicp = H8300MAGIC;
1399 case bfd_mach_h8300h:
1400 *magicp = H8300HMAGIC;
1406 #ifdef SH_ARCH_MAGIC_BIG
1408 if (abfd->xvec->byteorder_big_p)
1409 *magicp = SH_ARCH_MAGIC_BIG;
1411 *magicp = SH_ARCH_MAGIC_LITTLE;
1417 case bfd_arch_sparc:
1418 *magicp = SPARCMAGIC;
1420 /* Just overwrite the usual value if we're doing Lynx. */
1421 *magicp = LYNXCOFFMAGIC;
1428 case bfd_arch_h8500:
1429 *magicp = H8500MAGIC;
1433 #ifdef A29K_MAGIC_BIG
1435 if (abfd->xvec->byteorder_big_p)
1436 *magicp = A29K_MAGIC_BIG;
1438 *magicp = A29K_MAGIC_LITTLE;
1444 case bfd_arch_we32k:
1445 *magicp = WE32KMAGIC;
1451 case bfd_arch_rs6000:
1453 case bfd_arch_powerpc:
1455 *magicp = U802TOCMAGIC;
1460 default: /* Unknown architecture */
1461 /* return false; -- fall through to "return false" below, to avoid
1462 "statement never reached" errors on the one below. */
1471 coff_set_arch_mach (abfd, arch, machine)
1473 enum bfd_architecture arch;
1474 unsigned long machine;
1477 unsigned short dummy2;
1479 if (! bfd_default_set_arch_mach (abfd, arch, machine))
1482 if (arch != bfd_arch_unknown &&
1483 coff_set_flags (abfd, &dummy1, &dummy2) != true)
1484 return false; /* We can't represent this type */
1486 return true; /* We're easy ... */
1490 /* Calculate the file position for each section. */
1493 coff_compute_section_file_positions (abfd)
1497 asection *previous = (asection *) NULL;
1498 file_ptr sofar = FILHSZ;
1506 #ifdef COFF_IMAGE_WITH_PE
1508 if (coff_data (abfd)->link_info)
1510 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
1513 page_size = PE_DEF_FILE_ALIGNMENT;
1514 #elif defined (COFF_PAGE_SIZE)
1515 int page_size = COFF_PAGE_SIZE;
1518 if (bfd_get_start_address (abfd))
1520 /* A start address may have been added to the original file. In this
1521 case it will need an optional header to record it. */
1522 abfd->flags |= EXEC_P;
1525 if (abfd->flags & EXEC_P)
1528 sofar += abfd->section_count * SCNHSZ;
1529 for (current = abfd->sections, count = 1;
1530 current != (asection *) NULL;
1531 current = current->next, ++count)
1533 current->target_index = count;
1535 /* Only deal with sections which have contents */
1536 if (!(current->flags & SEC_HAS_CONTENTS))
1540 /* Do not include the .junk section. This is where we collect section
1541 data which we don't need. This is mainly the MS .debug$ data which
1542 stores codeview debug data. */
1543 if (strcmp (current->name, ".junk") == 0)
1549 /* Align the sections in the file to the same boundary on
1550 which they are aligned in virtual memory. I960 doesn't
1551 do this (FIXME) so we can stay in sync with Intel. 960
1552 doesn't yet page from files... */
1555 /* make sure this section is aligned on the right boundary - by
1556 padding the previous section up if necessary */
1559 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
1560 if (previous != (asection *) NULL)
1562 previous->_raw_size += sofar - old_sofar;
1568 /* In demand paged files the low order bits of the file offset
1569 must match the low order bits of the virtual address. */
1570 #ifdef COFF_PAGE_SIZE
1571 if ((abfd->flags & D_PAGED) != 0
1572 && (current->flags & SEC_ALLOC) != 0)
1573 sofar += (current->vma - sofar) % page_size;
1575 current->filepos = sofar;
1577 #ifdef COFF_IMAGE_WITH_PE
1578 /* With PE we have to pad each section to be a multiple of its page size
1579 too, and remember both sizes. Cooked_size becomes very useful. */
1580 current->_cooked_size = current->_raw_size;
1581 current->_raw_size = (current->_raw_size + page_size -1) & -page_size;
1584 sofar += current->_raw_size;
1587 /* make sure that this section is of the right size too */
1589 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
1590 current->_raw_size += sofar - old_sofar;
1594 /* Force .lib sections to start at zero. The vma is then
1595 incremented in coff_set_section_contents. This is right for
1597 if (strcmp (current->name, _LIB) == 0)
1598 bfd_set_section_vma (abfd, current, 0);
1604 obj_relocbase (abfd) = sofar;
1605 abfd->output_has_begun = true;
1609 #ifndef RS6000COFF_C
1611 /* If .file, .text, .data, .bss symbols are missing, add them. */
1612 /* @@ Should we only be adding missing symbols, or overriding the aux
1613 values for existing section symbols? */
1615 coff_add_missing_symbols (abfd)
1618 unsigned int nsyms = bfd_get_symcount (abfd);
1619 asymbol **sympp = abfd->outsymbols;
1622 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
1624 for (i = 0; i < nsyms; i++)
1626 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
1630 /* only do this if there is a coff representation of the input
1632 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
1637 name = csym->symbol.name;
1640 if (!strcmp (name, _TEXT))
1643 else if (!strcmp (name, ".wtext"))
1646 else if (!strcmp (name, _DATA))
1648 else if (!strcmp (name, _BSS))
1652 /* Now i == bfd_get_symcount (abfd). */
1653 /* @@ For now, don't deal with .file symbol. */
1656 if (!need_text && !need_data && !need_bss && !need_file)
1658 nsyms += need_text + need_data + need_bss + need_file;
1659 sympp2 = (asymbol **) bfd_alloc_by_size_t (abfd, nsyms * sizeof (asymbol *));
1662 bfd_set_error (bfd_error_no_memory);
1665 memcpy (sympp2, sympp, i * sizeof (asymbol *));
1668 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
1672 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
1674 sympp2[i++] = coff_section_symbol (abfd, _DATA);
1676 sympp2[i++] = coff_section_symbol (abfd, _BSS);
1677 BFD_ASSERT (i == nsyms);
1678 bfd_set_symtab (abfd, sympp2, nsyms);
1682 #endif /* ! defined (RS6000COFF_C) */
1689 coff_write_object_contents (abfd)
1693 boolean hasrelocs = false;
1694 boolean haslinno = false;
1695 file_ptr reloc_base;
1696 file_ptr lineno_base;
1698 unsigned long reloc_size = 0;
1699 unsigned long lnno_size = 0;
1700 asection *text_sec = NULL;
1701 asection *data_sec = NULL;
1702 asection *bss_sec = NULL;
1704 struct internal_filehdr internal_f;
1705 struct internal_aouthdr internal_a;
1707 bfd_set_error (bfd_error_system_call);
1709 if (abfd->output_has_begun == false)
1710 coff_compute_section_file_positions (abfd);
1712 reloc_base = obj_relocbase (abfd);
1714 /* Make a pass through the symbol table to count line number entries and
1715 put them into the correct asections */
1717 lnno_size = coff_count_linenumbers (abfd) * LINESZ;
1719 /* Work out the size of the reloc and linno areas */
1721 for (current = abfd->sections; current != NULL; current =
1723 reloc_size += current->reloc_count * RELSZ;
1725 lineno_base = reloc_base + reloc_size;
1726 sym_base = lineno_base + lnno_size;
1728 /* Indicate in each section->line_filepos its actual file address */
1729 for (current = abfd->sections; current != NULL; current =
1732 if (current->lineno_count)
1734 current->line_filepos = lineno_base;
1735 current->moving_line_filepos = lineno_base;
1736 lineno_base += current->lineno_count * LINESZ;
1740 current->line_filepos = 0;
1742 if (current->reloc_count)
1744 current->rel_filepos = reloc_base;
1745 reloc_base += current->reloc_count * RELSZ;
1749 current->rel_filepos = 0;
1753 /* Write section headers to the file. */
1754 internal_f.f_nscns = 0;
1757 (file_ptr) ((abfd->flags & EXEC_P) ?
1758 (FILHSZ + AOUTSZ) : FILHSZ),
1762 for (current = abfd->sections;
1764 current = current->next)
1766 struct internal_scnhdr section;
1769 /* Do not include the .junk section. This is where we collect section
1770 data which we don't need. This is mainly the MS .debug$ data which
1771 stores codeview debug data. */
1772 if (strcmp (current->name, ".junk") == 0)
1777 /* If we've got a .reloc section, remember. */
1779 if (strcmp (current->name, ".reloc") == 0)
1781 pe_data (abfd)->has_reloc_section = 1;
1784 internal_f.f_nscns++;
1785 strncpy (&(section.s_name[0]), current->name, 8);
1787 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
1788 Ian Taylor <ian@cygnus.com>. */
1789 if (strcmp (current->name, _LIB) == 0)
1790 section.s_vaddr = 0;
1793 section.s_vaddr = current->lma;
1794 section.s_paddr = current->lma;
1795 section.s_size = current->_raw_size;
1798 section.s_paddr = current->_cooked_size;
1802 If this section has no size or is unloadable then the scnptr
1805 if (current->_raw_size == 0 ||
1806 (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1808 section.s_scnptr = 0;
1812 section.s_scnptr = current->filepos;
1814 section.s_relptr = current->rel_filepos;
1815 section.s_lnnoptr = current->line_filepos;
1816 section.s_nreloc = current->reloc_count;
1817 section.s_nlnno = current->lineno_count;
1818 if (current->reloc_count != 0)
1820 if (current->lineno_count != 0)
1823 section.s_flags = sec_to_styp_flags (current->name, current->flags);
1825 if (!strcmp (current->name, _TEXT))
1829 else if (!strcmp (current->name, _DATA))
1833 else if (!strcmp (current->name, _BSS))
1839 section.s_align = (current->alignment_power
1840 ? 1 << current->alignment_power
1845 #ifdef COFF_IMAGE_WITH_PE
1846 /* suppress output of the sections if they are null. ld includes
1847 the bss and data sections even if there is no size assigned
1848 to them. NT loader doesn't like it if these section headers are
1849 included if the sections themselves are not needed */
1850 if (section.s_size == 0)
1851 internal_f.f_nscns--;
1856 if (coff_swap_scnhdr_out (abfd, §ion, &buff) == 0
1857 || bfd_write ((PTR) (&buff), 1, SCNHSZ, abfd) != SCNHSZ)
1864 /* OK, now set up the filehdr... */
1866 /* Don't include the internal abs section in the section count */
1869 We will NOT put a fucking timestamp in the header here. Every time you
1870 put it back, I will come in and take it out again. I'm sorry. This
1871 field does not belong here. We fill it with a 0 so it compares the
1872 same but is not a reasonable time. -- gnu@cygnus.com
1874 internal_f.f_timdat = 0;
1876 internal_f.f_flags = 0;
1878 if (abfd->flags & EXEC_P)
1879 internal_f.f_opthdr = AOUTSZ;
1881 internal_f.f_opthdr = 0;
1884 internal_f.f_flags |= F_RELFLG;
1886 internal_f.f_flags |= F_LNNO;
1887 if (abfd->flags & EXEC_P)
1888 internal_f.f_flags |= F_EXEC;
1890 if (!abfd->xvec->byteorder_big_p)
1891 internal_f.f_flags |= F_AR32WR;
1893 internal_f.f_flags |= F_AR32W;
1896 FIXME, should do something about the other byte orders and
1900 memset (&internal_a, 0, sizeof internal_a);
1902 /* Set up architecture-dependent stuff */
1905 unsigned int magic = 0;
1906 unsigned short flags = 0;
1907 coff_set_flags (abfd, &magic, &flags);
1908 internal_f.f_magic = magic;
1909 internal_f.f_flags |= flags;
1910 /* ...and the "opt"hdr... */
1913 #ifdef ULTRA3 /* NYU's machine */
1914 /* FIXME: This is a bogus check. I really want to see if there
1915 * is a .shbss or a .shdata section, if so then set the magic
1916 * number to indicate a shared data executable.
1918 if (internal_f.f_nscns >= 7)
1919 internal_a.magic = SHMAGIC; /* Shared magic */
1922 internal_a.magic = NMAGIC; /* Assume separate i/d */
1923 #define __A_MAGIC_SET__
1926 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
1927 #define __A_MAGIC_SET__
1930 #define __A_MAGIC_SET__
1931 internal_a.magic = PAGEMAGICBCS;
1935 #define __A_MAGIC_SET__
1936 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
1939 #if defined(M68) || defined(WE32K) || defined(M68K)
1940 #define __A_MAGIC_SET__
1942 internal_a.magic = LYNXCOFFMAGIC;
1944 #endif /* M68 || WE32K || M68K */
1947 #define __A_MAGIC_SET__
1948 internal_a.magic = ZMAGIC;
1951 #define __A_MAGIC_SET__
1952 internal_a.magic = PPCMAGIC;
1955 #define __A_MAGIC_SET__
1957 internal_a.magic = LYNXCOFFMAGIC;
1959 internal_a.magic = ZMAGIC;
1964 #define __A_MAGIC_SET__
1966 internal_a.magic = LYNXCOFFMAGIC;
1971 #define __A_MAGIC_SET__
1972 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
1973 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
1974 RS6K_AOUTHDR_OMAGIC;
1977 #ifndef __A_MAGIC_SET__
1978 #include "Your aouthdr magic number is not being set!"
1980 #undef __A_MAGIC_SET__
1984 /* FIXME: Does anybody ever set this to another value? */
1985 internal_a.vstamp = 0;
1987 /* Now should write relocs, strings, syms */
1988 obj_sym_filepos (abfd) = sym_base;
1990 if (bfd_get_symcount (abfd) != 0)
1993 #ifndef RS6000COFF_C
1994 if (!coff_add_missing_symbols (abfd))
1997 if (!coff_renumber_symbols (abfd, &firstundef))
1999 coff_mangle_symbols (abfd);
2000 if (! coff_write_symbols (abfd))
2002 if (! coff_write_linenumbers (abfd))
2004 if (! coff_write_relocs (abfd, firstundef))
2008 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
2009 backend linker, and obj_raw_syment_count is not valid until after
2010 coff_write_symbols is called. */
2011 if (obj_raw_syment_count (abfd) != 0)
2012 internal_f.f_symptr = sym_base;
2015 internal_f.f_symptr = 0;
2016 internal_f.f_flags |= F_LSYMS;
2021 internal_a.tsize = bfd_get_section_size_before_reloc (text_sec);
2022 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
2026 internal_a.dsize = bfd_get_section_size_before_reloc (data_sec);
2027 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
2031 internal_a.bsize = bfd_get_section_size_before_reloc (bss_sec);
2034 internal_a.entry = bfd_get_start_address (abfd);
2035 internal_f.f_nsyms = obj_raw_syment_count (abfd);
2037 /* now write them */
2038 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
2042 coff_swap_filehdr_out (abfd, (PTR) & internal_f, (PTR) & buff);
2043 if (bfd_write ((PTR) & buff, 1, FILHSZ, abfd) != FILHSZ)
2046 if (abfd->flags & EXEC_P)
2049 coff_swap_aouthdr_out (abfd, (PTR) & internal_a, (PTR) & buff);
2050 if (bfd_write ((PTR) & buff, 1, AOUTSZ, abfd) != AOUTSZ)
2058 coff_set_section_contents (abfd, section, location, offset, count)
2063 bfd_size_type count;
2065 if (abfd->output_has_begun == false) /* set by bfd.c handler */
2066 coff_compute_section_file_positions (abfd);
2069 /* If this is a .lib section, bump the vma address so that it
2070 winds up being the number of .lib sections output. This is
2071 right for SVR3.2. Shared libraries should probably get more
2072 generic support. Ian Taylor <ian@cygnus.com>. */
2073 if (strcmp (section->name, _LIB) == 0)
2077 /* Don't write out bss sections - one way to do this is to
2078 see if the filepos has not been set. */
2079 if (section->filepos == 0)
2082 if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0)
2087 return (bfd_write (location, 1, count, abfd) == count) ? true : false;
2093 coff_close_and_cleanup (abfd)
2096 if (!bfd_read_p (abfd))
2097 switch (abfd->format)
2100 if (!_bfd_write_archive_contents (abfd))
2104 if (!coff_write_object_contents (abfd))
2108 bfd_set_error (bfd_error_invalid_operation);
2112 /* We depend on bfd_close to free all the memory on the obstack. */
2113 /* FIXME if bfd_release is not using obstacks! */
2120 buy_and_read (abfd, where, seek_direction, size)
2126 PTR area = (PTR) bfd_alloc (abfd, size);
2129 bfd_set_error (bfd_error_no_memory);
2132 if (bfd_seek (abfd, where, seek_direction) != 0
2133 || bfd_read (area, 1, size, abfd) != size)
2136 } /* buy_and_read() */
2142 Creating the linenumber table is done by reading in the entire
2143 coff linenumber table, and creating another table for internal use.
2145 A coff linenumber table is structured so that each function
2146 is marked as having a line number of 0. Each line within the
2147 function is an offset from the first line in the function. The
2148 base of the line number information for the table is stored in
2149 the symbol associated with the function.
2151 The information is copied from the external to the internal
2152 table, and each symbol which marks a function is marked by
2155 How does this work ?
2160 coff_slurp_line_table (abfd, asect)
2164 LINENO *native_lineno;
2165 alent *lineno_cache;
2167 BFD_ASSERT (asect->lineno == (alent *) NULL);
2169 native_lineno = (LINENO *) buy_and_read (abfd,
2170 asect->line_filepos,
2173 asect->lineno_count));
2175 (alent *) bfd_alloc (abfd, (size_t) ((asect->lineno_count + 1) * sizeof (alent)));
2176 if (lineno_cache == NULL)
2178 bfd_set_error (bfd_error_no_memory);
2183 unsigned int counter = 0;
2184 alent *cache_ptr = lineno_cache;
2185 LINENO *src = native_lineno;
2187 while (counter < asect->lineno_count)
2189 struct internal_lineno dst;
2190 coff_swap_lineno_in (abfd, src, &dst);
2191 cache_ptr->line_number = dst.l_lnno;
2193 if (cache_ptr->line_number == 0)
2195 coff_symbol_type *sym =
2196 (coff_symbol_type *) (dst.l_addr.l_symndx
2197 + obj_raw_syments (abfd))->u.syment._n._n_n._n_zeroes;
2198 cache_ptr->u.sym = (asymbol *) sym;
2199 sym->lineno = cache_ptr;
2203 cache_ptr->u.offset = dst.l_addr.l_paddr
2204 - bfd_section_vma (abfd, asect);
2205 } /* If no linenumber expect a symbol index */
2211 cache_ptr->line_number = 0;
2214 asect->lineno = lineno_cache;
2215 /* FIXME, free native_lineno here, or use alloca or something. */
2220 coff_slurp_symbol_table (abfd)
2223 combined_entry_type *native_symbols;
2224 coff_symbol_type *cached_area;
2225 unsigned int *table_ptr;
2227 unsigned int number_of_symbols = 0;
2229 if (obj_symbols (abfd))
2232 /* Read in the symbol table */
2233 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
2238 /* Allocate enough room for all the symbols in cached form */
2239 cached_area = ((coff_symbol_type *)
2241 (obj_raw_syment_count (abfd)
2242 * sizeof (coff_symbol_type))));
2244 if (cached_area == NULL)
2246 bfd_set_error (bfd_error_no_memory);
2249 table_ptr = ((unsigned int *)
2251 (obj_raw_syment_count (abfd)
2252 * sizeof (unsigned int))));
2254 if (table_ptr == NULL)
2256 bfd_set_error (bfd_error_no_memory);
2261 coff_symbol_type *dst = cached_area;
2262 unsigned int last_native_index = obj_raw_syment_count (abfd);
2263 unsigned int this_index = 0;
2264 while (this_index < last_native_index)
2266 combined_entry_type *src = native_symbols + this_index;
2267 table_ptr[this_index] = number_of_symbols;
2268 dst->symbol.the_bfd = abfd;
2270 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
2271 /* We use the native name field to point to the cached field. */
2272 src->u.syment._n._n_n._n_zeroes = (long) dst;
2273 dst->symbol.section = coff_section_from_bfd_index (abfd,
2274 src->u.syment.n_scnum);
2275 dst->symbol.flags = 0;
2276 dst->done_lineno = false;
2278 switch (src->u.syment.n_sclass)
2283 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
2284 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
2285 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
2287 /* Fall through to next case */
2296 /* PE uses storage class 0x68 to denote a section symbol */
2299 if ((src->u.syment.n_scnum) == 0)
2301 if ((src->u.syment.n_value) == 0)
2303 dst->symbol.section = bfd_und_section_ptr;
2304 dst->symbol.value = 0;
2308 dst->symbol.section = bfd_com_section_ptr;
2309 dst->symbol.value = (src->u.syment.n_value);
2314 /* Base the value as an index from the base of the
2317 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
2318 dst->symbol.value = (src->u.syment.n_value
2319 - dst->symbol.section->vma);
2321 if (ISFCN ((src->u.syment.n_type)))
2323 /* A function ext does not go at the end of a
2325 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
2330 /* A C_HIDEXT symbol is not global. */
2331 if (src->u.syment.n_sclass == C_HIDEXT)
2332 dst->symbol.flags = BSF_LOCAL;
2334 /* If this symbol has a csect aux of type LD, the scnlen
2335 field is actually the index of the containing csect
2336 symbol. We need to pointerize it. */
2337 if (src->u.syment.n_numaux > 0)
2339 combined_entry_type *aux;
2341 aux = src + src->u.syment.n_numaux - 1;
2342 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2344 aux->u.auxent.x_csect.x_scnlen.p =
2345 native_symbols + aux->u.auxent.x_csect.x_scnlen.l;
2346 aux->fix_scnlen = 1;
2353 case C_STAT: /* static */
2355 case C_LEAFSTAT: /* static leaf procedure */
2357 case C_LABEL: /* label */
2358 if (src->u.syment.n_scnum == -2)
2359 dst->symbol.flags = BSF_DEBUGGING;
2361 dst->symbol.flags = BSF_LOCAL;
2363 Base the value as an index from the base of the section, if
2366 if (dst->symbol.section)
2367 dst->symbol.value = (src->u.syment.n_value) -
2368 dst->symbol.section->vma;
2370 dst->symbol.value = (src->u.syment.n_value);
2373 case C_MOS: /* member of structure */
2374 case C_EOS: /* end of structure */
2375 #ifdef NOTDEF /* C_AUTOARG has the same value */
2377 case C_GLBLREG: /* A29k-specific storage class */
2380 case C_REGPARM: /* register parameter */
2381 case C_REG: /* register variable */
2383 case C_AUTOARG: /* 960-specific storage class */
2385 case C_TPDEF: /* type definition */
2387 case C_AUTO: /* automatic variable */
2388 case C_FIELD: /* bit field */
2389 case C_ENTAG: /* enumeration tag */
2390 case C_MOE: /* member of enumeration */
2391 case C_MOU: /* member of union */
2392 case C_UNTAG: /* union tag */
2393 dst->symbol.flags = BSF_DEBUGGING;
2394 dst->symbol.value = (src->u.syment.n_value);
2397 case C_FILE: /* file name */
2398 case C_STRTAG: /* structure tag */
2400 case C_BINCL: /* beginning of include file */
2401 case C_EINCL: /* ending of include file */
2413 dst->symbol.flags = BSF_DEBUGGING;
2414 dst->symbol.value = (src->u.syment.n_value);
2419 dst->symbol.flags = BSF_DEBUGGING;
2420 dst->symbol.value = src->u.syment.n_value;
2422 /* The value is actually a symbol index. Save a pointer to
2423 the symbol instead of the index. FIXME: This should use a
2425 src->u.syment.n_value =
2426 (long) (native_symbols + src->u.syment.n_value);
2431 case C_BLOCK: /* ".bb" or ".eb" */
2432 case C_FCN: /* ".bf" or ".ef" */
2433 case C_EFCN: /* physical end of function */
2434 dst->symbol.flags = BSF_LOCAL;
2436 Base the value as an index from the base of the section
2438 dst->symbol.value = (src->u.syment.n_value) - dst->symbol.section->vma;
2442 case C_EXTDEF: /* external definition */
2443 case C_ULABEL: /* undefined label */
2444 case C_USTATIC: /* undefined static */
2445 #ifndef COFF_WITH_PE
2446 /* C_LINE in regular coff is 0x68. NT has taken over this storage
2447 class to represent a section symbol */
2448 case C_LINE: /* line # reformatted as symbol table entry */
2450 case C_ALIAS: /* duplicate tag */
2451 case C_HIDDEN: /* ext symbol in dmert public lib */
2453 (*_bfd_error_handler)
2454 ("%s: Unrecognized storage class %d for %s symbol `%s'",
2455 bfd_get_filename (abfd), src->u.syment.n_sclass,
2456 dst->symbol.section->name, dst->symbol.name);
2457 dst->symbol.flags = BSF_DEBUGGING;
2458 dst->symbol.value = (src->u.syment.n_value);
2462 /* BFD_ASSERT(dst->symbol.flags != 0);*/
2466 dst->symbol.udata.i = 0;
2467 dst->lineno = (alent *) NULL;
2468 this_index += (src->u.syment.n_numaux) + 1;
2470 number_of_symbols++;
2471 } /* walk the native symtab */
2472 } /* bfdize the native symtab */
2474 obj_symbols (abfd) = cached_area;
2475 obj_raw_syments (abfd) = native_symbols;
2477 bfd_get_symcount (abfd) = number_of_symbols;
2478 obj_convert (abfd) = table_ptr;
2479 /* Slurp the line tables for each section too */
2485 coff_slurp_line_table (abfd, p);
2490 } /* coff_slurp_symbol_table() */
2492 /* Check whether a symbol is globally visible. This is used by the
2493 COFF backend linker code in cofflink.c, since a couple of targets
2494 have globally visible symbols which are not class C_EXT. This
2495 function need not handle the case of n_class == C_EXT. */
2497 #undef OTHER_GLOBAL_CLASS
2500 #define OTHER_GLOBAL_CLASS C_LEAFEXT
2504 #define OTHER_GLOBAL_CLASS C_SECTION
2507 #ifdef OTHER_GLOBAL_CLASS
2510 coff_sym_is_global (abfd, syment)
2512 struct internal_syment *syment;
2514 if (syment->n_sclass == OTHER_GLOBAL_CLASS)
2519 #undef OTHER_GLOBAL_CLASS
2521 #else /* ! defined (OTHER_GLOBAL_CLASS) */
2523 /* sym_is_global should not be defined if it has nothing to do. */
2525 #define coff_sym_is_global 0
2527 #endif /* ! defined (OTHER_GLOBAL_CLASS) */
2533 Coff relocations are easily transformed into the internal BFD form
2536 Reading a coff relocation table is done in the following stages:
2538 o Read the entire coff relocation table into memory.
2540 o Process each relocation in turn; first swap it from the
2541 external to the internal form.
2543 o Turn the symbol referenced in the relocation's symbol index
2544 into a pointer into the canonical symbol table.
2545 This table is the same as the one returned by a call to
2546 @code{bfd_canonicalize_symtab}. The back end will call that
2547 routine and save the result if a canonicalization hasn't been done.
2549 o The reloc index is turned into a pointer to a howto
2550 structure, in a back end specific way. For instance, the 386
2551 and 960 use the @code{r_type} to directly produce an index
2552 into a howto table vector; the 88k subtracts a number from the
2553 @code{r_type} field and creates an addend field.
2559 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
2561 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
2562 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
2563 coffsym = (obj_symbols (abfd) \
2564 + (cache_ptr->sym_ptr_ptr - symbols)); \
2566 coffsym = coff_symbol_from (abfd, ptr); \
2567 if (coffsym != (coff_symbol_type *) NULL \
2568 && coffsym->native->u.syment.n_scnum == 0) \
2569 cache_ptr->addend = 0; \
2570 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
2571 && ptr->section != (asection *) NULL) \
2572 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
2574 cache_ptr->addend = 0; \
2579 coff_slurp_reloc_table (abfd, asect, symbols)
2584 RELOC *native_relocs;
2585 arelent *reloc_cache;
2590 if (asect->relocation)
2592 if (asect->reloc_count == 0)
2594 if (asect->flags & SEC_CONSTRUCTOR)
2596 if (!coff_slurp_symbol_table (abfd))
2599 (RELOC *) buy_and_read (abfd,
2603 asect->reloc_count));
2604 reloc_cache = (arelent *)
2605 bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent)));
2607 if (reloc_cache == NULL)
2609 bfd_set_error (bfd_error_no_memory);
2614 for (idx = 0; idx < asect->reloc_count; idx++)
2616 #ifdef RELOC_PROCESSING
2617 struct internal_reloc dst;
2618 struct external_reloc *src;
2620 cache_ptr = reloc_cache + idx;
2621 src = native_relocs + idx;
2622 coff_swap_reloc_in (abfd, src, &dst);
2624 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
2626 struct internal_reloc dst;
2628 struct external_reloc *src;
2630 cache_ptr = reloc_cache + idx;
2631 src = native_relocs + idx;
2633 coff_swap_reloc_in (abfd, src, &dst);
2636 cache_ptr->address = dst.r_vaddr;
2638 if (dst.r_symndx != -1)
2640 /* @@ Should never be greater than count of symbols! */
2641 if (dst.r_symndx >= obj_conv_table_size (abfd))
2643 cache_ptr->sym_ptr_ptr = symbols + obj_convert (abfd)[dst.r_symndx];
2644 ptr = *(cache_ptr->sym_ptr_ptr);
2648 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
2652 /* The symbols definitions that we have read in have been
2653 relocated as if their sections started at 0. But the offsets
2654 refering to the symbols in the raw data have not been
2655 modified, so we have to have a negative addend to compensate.
2657 Note that symbols which used to be common must be left alone */
2659 /* Calculate any reloc addend by looking at the symbol */
2660 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
2662 cache_ptr->address -= asect->vma;
2663 /* !! cache_ptr->section = (asection *) NULL;*/
2665 /* Fill in the cache_ptr->howto field from dst.r_type */
2666 RTYPE2HOWTO (cache_ptr, &dst);
2671 asect->relocation = reloc_cache;
2675 #ifndef coff_rtype_to_howto
2678 /* Get the howto structure for a reloc. This is only used if the file
2679 including this one defines coff_relocate_section to be
2680 _bfd_coff_generic_relocate_section, so it is OK if it does not
2681 always work. It is the responsibility of the including file to
2682 make sure it is reasonable if it is needed. */
2684 static reloc_howto_type *coff_rtype_to_howto
2685 PARAMS ((bfd *, asection *, struct internal_reloc *,
2686 struct coff_link_hash_entry *, struct internal_syment *,
2690 static reloc_howto_type *
2691 coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
2694 struct internal_reloc *rel;
2695 struct coff_link_hash_entry *h;
2696 struct internal_syment *sym;
2701 RTYPE2HOWTO (&genrel, rel);
2702 return genrel.howto;
2705 #else /* ! defined (RTYPE2HOWTO) */
2707 #define coff_rtype_to_howto NULL
2709 #endif /* ! defined (RTYPE2HOWTO) */
2710 #endif /* ! defined (coff_rtype_to_howto) */
2712 /* This is stupid. This function should be a boolean predicate. */
2714 coff_canonicalize_reloc (abfd, section, relptr, symbols)
2720 arelent *tblptr = section->relocation;
2721 unsigned int count = 0;
2724 if (section->flags & SEC_CONSTRUCTOR)
2726 /* this section has relocs made up by us, they are not in the
2727 file, so take them out of their chain and place them into
2728 the data area provided */
2729 arelent_chain *chain = section->constructor_chain;
2730 for (count = 0; count < section->reloc_count; count++)
2732 *relptr++ = &chain->relent;
2733 chain = chain->next;
2739 if (! coff_slurp_reloc_table (abfd, section, symbols))
2742 tblptr = section->relocation;
2744 for (; count++ < section->reloc_count;)
2745 *relptr++ = tblptr++;
2750 return section->reloc_count;
2755 coff_sym_filepos (abfd)
2758 return obj_sym_filepos (abfd);
2762 #ifndef coff_reloc16_estimate
2763 #define coff_reloc16_estimate dummy_reloc16_estimate
2766 dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
2768 asection *input_section;
2770 unsigned int shrink;
2771 struct bfd_link_info *link_info;
2778 #ifndef coff_reloc16_extra_cases
2779 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
2780 /* This works even if abort is not declared in any header file. */
2782 dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
2785 struct bfd_link_info *link_info;
2786 struct bfd_link_order *link_order;
2789 unsigned int *src_ptr;
2790 unsigned int *dst_ptr;
2796 /* If coff_relocate_section is defined, we can use the optimized COFF
2797 backend linker. Otherwise we must continue to use the old linker. */
2798 #ifdef coff_relocate_section
2799 #ifndef coff_bfd_link_hash_table_create
2800 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
2802 #ifndef coff_bfd_link_add_symbols
2803 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
2805 #ifndef coff_bfd_final_link
2806 #define coff_bfd_final_link _bfd_coff_final_link
2808 #else /* ! defined (coff_relocate_section) */
2809 #define coff_relocate_section NULL
2810 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
2811 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
2812 #define coff_bfd_final_link _bfd_generic_final_link
2813 #endif /* ! defined (coff_relocate_section) */
2814 #define coff_bfd_link_split_section _bfd_generic_link_split_section
2816 #ifndef coff_start_final_link
2817 #define coff_start_final_link NULL
2820 #ifndef coff_adjust_symndx
2821 #define coff_adjust_symndx NULL
2824 static CONST bfd_coff_backend_data bfd_coff_std_swap_table =
2826 coff_swap_aux_in, coff_swap_sym_in, coff_swap_lineno_in,
2827 coff_swap_aux_out, coff_swap_sym_out,
2828 coff_swap_lineno_out, coff_swap_reloc_out,
2829 coff_swap_filehdr_out, coff_swap_aouthdr_out,
2830 coff_swap_scnhdr_out,
2831 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ,
2832 #ifdef COFF_LONG_FILENAMES
2837 coff_swap_filehdr_in, coff_swap_aouthdr_in, coff_swap_scnhdr_in,
2838 coff_swap_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
2839 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
2840 coff_slurp_symbol_table, symname_in_debug_hook,
2841 coff_reloc16_extra_cases, coff_reloc16_estimate,
2842 coff_sym_is_global, coff_compute_section_file_positions,
2843 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
2847 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
2848 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
2849 #define coff_get_section_contents _bfd_generic_get_section_contents
2851 #ifndef coff_bfd_copy_private_symbol_data
2852 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
2855 #ifndef coff_bfd_copy_private_section_data
2856 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
2859 #ifndef coff_bfd_copy_private_bfd_data
2860 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
2863 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
2864 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
2866 #ifndef coff_bfd_print_private_bfd_data
2867 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
2870 #ifndef coff_bfd_is_local_label
2871 #define coff_bfd_is_local_label bfd_generic_is_local_label
2873 #ifndef coff_read_minisymbols
2874 #define coff_read_minisymbols _bfd_generic_read_minisymbols
2876 #ifndef coff_minisymbol_to_symbol
2877 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
2880 /* The reloc lookup routine must be supplied by each individual COFF
2882 #ifndef coff_bfd_reloc_type_lookup
2883 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
2886 #ifndef coff_bfd_get_relocated_section_contents
2887 #define coff_bfd_get_relocated_section_contents \
2888 bfd_generic_get_relocated_section_contents
2890 #ifndef coff_bfd_relax_section
2891 #define coff_bfd_relax_section bfd_generic_relax_section