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 */
1081 arch
= bfd_arch_rs6000
;
1088 arch
= bfd_arch_we32k
;
1095 arch
= bfd_arch_h8300
;
1096 machine
= bfd_mach_h8300
;
1097 /* !! FIXME this probably isn't the right place for this */
1098 abfd
->flags
|= BFD_IS_RELAXABLE
;
1104 arch
= bfd_arch_h8300
;
1105 machine
= bfd_mach_h8300h
;
1106 /* !! FIXME this probably isn't the right place for this */
1107 abfd
->flags
|= BFD_IS_RELAXABLE
;
1111 #ifdef SH_ARCH_MAGIC_BIG
1112 case SH_ARCH_MAGIC_BIG
:
1113 case SH_ARCH_MAGIC_LITTLE
:
1121 arch
= bfd_arch_h8500
;
1128 #ifdef LYNXCOFFMAGIC
1131 arch
= bfd_arch_sparc
;
1136 default: /* Unreadable input file type */
1137 arch
= bfd_arch_obscure
;
1141 bfd_default_set_arch_mach (abfd
, arch
, machine
);
1145 #ifdef SYMNAME_IN_DEBUG
1148 symname_in_debug_hook (abfd
, sym
)
1150 struct internal_syment
*sym
;
1152 return SYMNAME_IN_DEBUG (sym
) ? true : false;
1157 #define symname_in_debug_hook \
1158 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
1166 To write relocations, the back end steps though the
1167 canonical relocation table and create an
1168 @code{internal_reloc}. The symbol index to use is removed from
1169 the @code{offset} field in the symbol table supplied. The
1170 address comes directly from the sum of the section base
1171 address and the relocation offset; the type is dug directly
1172 from the howto field. Then the @code{internal_reloc} is
1173 swapped into the shape of an @code{external_reloc} and written
1179 coff_write_relocs (abfd
, first_undef
)
1184 for (s
= abfd
->sections
; s
!= (asection
*) NULL
; s
= s
->next
)
1187 struct external_reloc dst
;
1189 arelent
**p
= s
->orelocation
;
1190 if (bfd_seek (abfd
, s
->rel_filepos
, SEEK_SET
) != 0)
1192 for (i
= 0; i
< s
->reloc_count
; i
++)
1194 struct internal_reloc n
;
1196 memset ((PTR
) & n
, 0, sizeof (n
));
1198 /* Now we've renumbered the symbols we know where the
1199 undefined symbols live in the table. Check the reloc
1200 entries for symbols who's output bfd isn't the right one.
1201 This is because the symbol was undefined (which means
1202 that all the pointers are never made to point to the same
1203 place). This is a bad thing,'cause the symbols attached
1204 to the output bfd are indexed, so that the relocation
1205 entries know which symbol index they point to. So we
1206 have to look up the output symbol here. */
1208 if (q
->sym_ptr_ptr
[0]->the_bfd
!= abfd
)
1211 const char *sname
= q
->sym_ptr_ptr
[0]->name
;
1212 asymbol
**outsyms
= abfd
->outsymbols
;
1213 for (i
= first_undef
; outsyms
[i
]; i
++)
1215 const char *intable
= outsyms
[i
]->name
;
1216 if (strcmp (intable
, sname
) == 0) {
1217 /* got a hit, so repoint the reloc */
1218 q
->sym_ptr_ptr
= outsyms
+ i
;
1224 n
.r_vaddr
= q
->address
+ s
->vma
;
1227 /* The 29k const/consth reloc pair is a real kludge. The consth
1228 part doesn't have a symbol; it has an offset. So rebuilt
1230 if (q
->howto
->type
== R_IHCONST
)
1231 n
.r_symndx
= q
->addend
;
1236 if (q
->sym_ptr_ptr
== bfd_abs_section_ptr
->symbol_ptr_ptr
)
1237 /* This is a relocation relative to the absolute symbol. */
1241 n
.r_symndx
= get_index ((*(q
->sym_ptr_ptr
)));
1242 /* Take notice if the symbol reloc points to a symbol
1243 we don't have in our symbol table. What should we
1245 if (n
.r_symndx
> obj_conv_table_size (abfd
))
1250 #ifdef SWAP_OUT_RELOC_OFFSET
1251 n
.r_offset
= q
->addend
;
1255 /* Work out reloc type from what is required */
1256 SELECT_RELOC (n
, q
->howto
);
1258 n
.r_type
= q
->howto
->type
;
1260 coff_swap_reloc_out (abfd
, &n
, &dst
);
1261 if (bfd_write ((PTR
) & dst
, 1, RELSZ
, abfd
) != RELSZ
)
1269 /* Set flags and magic number of a coff file from architecture and machine
1270 type. Result is true if we can represent the arch&type, false if not. */
1273 coff_set_flags (abfd
, magicp
, flagsp
)
1276 unsigned short *flagsp
;
1278 switch (bfd_get_arch (abfd
))
1283 switch (bfd_get_mach (abfd
))
1285 case bfd_mach_z8001
:
1288 case bfd_mach_z8002
:
1302 *magicp
= I960ROMAGIC
;
1304 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
1305 I960RWMAGIC); FIXME???
1307 switch (bfd_get_mach (abfd
))
1309 case bfd_mach_i960_core
:
1312 case bfd_mach_i960_kb_sb
:
1315 case bfd_mach_i960_mc
:
1318 case bfd_mach_i960_xa
:
1321 case bfd_mach_i960_ca
:
1324 case bfd_mach_i960_ka_sa
:
1327 /* start-sanitize-i960xl */
1328 case bfd_mach_i960_xl
:
1331 /* end-sanitize-i960xl */
1346 case bfd_arch_powerpc
:
1353 *magicp
= I386MAGIC
;
1355 /* Just overwrite the usual value if we're doing Lynx. */
1356 *magicp
= LYNXCOFFMAGIC
;
1363 #ifdef APOLLOM68KMAGIC
1364 *magicp
= APOLLO_COFF_VERSION_NUMBER
;
1366 *magicp
= MC68MAGIC
;
1369 /* Just overwrite the usual value if we're doing Lynx. */
1370 *magicp
= LYNXCOFFMAGIC
;
1378 *magicp
= MC88OMAGIC
;
1383 case bfd_arch_h8300
:
1384 switch (bfd_get_mach (abfd
))
1386 case bfd_mach_h8300
:
1387 *magicp
= H8300MAGIC
;
1389 case bfd_mach_h8300h
:
1390 *magicp
= H8300HMAGIC
;
1396 #ifdef SH_ARCH_MAGIC_BIG
1398 if (abfd
->xvec
->byteorder_big_p
)
1399 *magicp
= SH_ARCH_MAGIC_BIG
;
1401 *magicp
= SH_ARCH_MAGIC_LITTLE
;
1407 case bfd_arch_sparc
:
1408 *magicp
= SPARCMAGIC
;
1410 /* Just overwrite the usual value if we're doing Lynx. */
1411 *magicp
= LYNXCOFFMAGIC
;
1418 case bfd_arch_h8500
:
1419 *magicp
= H8500MAGIC
;
1423 #ifdef A29K_MAGIC_BIG
1425 if (abfd
->xvec
->byteorder_big_p
)
1426 *magicp
= A29K_MAGIC_BIG
;
1428 *magicp
= A29K_MAGIC_LITTLE
;
1434 case bfd_arch_we32k
:
1435 *magicp
= WE32KMAGIC
;
1441 case bfd_arch_rs6000
:
1443 case bfd_arch_powerpc
:
1445 *magicp
= U802TOCMAGIC
;
1450 default: /* Unknown architecture */
1451 /* return false; -- fall through to "return false" below, to avoid
1452 "statement never reached" errors on the one below. */
1461 coff_set_arch_mach (abfd
, arch
, machine
)
1463 enum bfd_architecture arch
;
1464 unsigned long machine
;
1467 unsigned short dummy2
;
1469 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
1472 if (arch
!= bfd_arch_unknown
&&
1473 coff_set_flags (abfd
, &dummy1
, &dummy2
) != true)
1474 return false; /* We can't represent this type */
1476 return true; /* We're easy ... */
1480 /* Calculate the file position for each section. */
1483 coff_compute_section_file_positions (abfd
)
1487 asection
*previous
= (asection
*) NULL
;
1488 file_ptr sofar
= FILHSZ
;
1496 #ifdef COFF_IMAGE_WITH_PE
1498 if (coff_data (abfd
)->link_info
)
1500 page_size
= pe_data (abfd
)->pe_opthdr
.FileAlignment
;
1503 page_size
= PE_DEF_FILE_ALIGNMENT
;
1504 #elif defined (COFF_PAGE_SIZE)
1505 int page_size
= COFF_PAGE_SIZE
;
1508 if (bfd_get_start_address (abfd
))
1510 /* A start address may have been added to the original file. In this
1511 case it will need an optional header to record it. */
1512 abfd
->flags
|= EXEC_P
;
1515 if (abfd
->flags
& EXEC_P
)
1518 sofar
+= abfd
->section_count
* SCNHSZ
;
1519 for (current
= abfd
->sections
, count
= 1;
1520 current
!= (asection
*) NULL
;
1521 current
= current
->next
, ++count
)
1523 current
->target_index
= count
;
1525 /* Only deal with sections which have contents */
1526 if (!(current
->flags
& SEC_HAS_CONTENTS
))
1530 /* Do not include the .junk section. This is where we collect section
1531 data which we don't need. This is mainly the MS .debug$ data which
1532 stores codeview debug data. */
1533 if (strcmp (current
->name
, ".junk") == 0)
1539 /* Align the sections in the file to the same boundary on
1540 which they are aligned in virtual memory. I960 doesn't
1541 do this (FIXME) so we can stay in sync with Intel. 960
1542 doesn't yet page from files... */
1545 /* make sure this section is aligned on the right boundary - by
1546 padding the previous section up if necessary */
1549 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
1550 if (previous
!= (asection
*) NULL
)
1552 previous
->_raw_size
+= sofar
- old_sofar
;
1558 /* In demand paged files the low order bits of the file offset
1559 must match the low order bits of the virtual address. */
1560 #ifdef COFF_PAGE_SIZE
1561 if ((abfd
->flags
& D_PAGED
) != 0
1562 && (current
->flags
& SEC_ALLOC
) != 0)
1563 sofar
+= (current
->vma
- sofar
) % page_size
;
1565 current
->filepos
= sofar
;
1567 #ifdef COFF_IMAGE_WITH_PE
1568 /* With PE we have to pad each section to be a multiple of its page size
1569 too, and remember both sizes. Cooked_size becomes very useful. */
1570 current
->_cooked_size
= current
->_raw_size
;
1571 current
->_raw_size
= (current
->_raw_size
+ page_size
-1) & -page_size
;
1574 sofar
+= current
->_raw_size
;
1577 /* make sure that this section is of the right size too */
1579 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
1580 current
->_raw_size
+= sofar
- old_sofar
;
1584 /* Force .lib sections to start at zero. The vma is then
1585 incremented in coff_set_section_contents. This is right for
1587 if (strcmp (current
->name
, _LIB
) == 0)
1588 bfd_set_section_vma (abfd
, current
, 0);
1594 obj_relocbase (abfd
) = sofar
;
1595 abfd
->output_has_begun
= true;
1599 #ifndef RS6000COFF_C
1601 /* If .file, .text, .data, .bss symbols are missing, add them. */
1602 /* @@ Should we only be adding missing symbols, or overriding the aux
1603 values for existing section symbols? */
1605 coff_add_missing_symbols (abfd
)
1608 unsigned int nsyms
= bfd_get_symcount (abfd
);
1609 asymbol
**sympp
= abfd
->outsymbols
;
1612 int need_text
= 1, need_data
= 1, need_bss
= 1, need_file
= 1;
1614 for (i
= 0; i
< nsyms
; i
++)
1616 coff_symbol_type
*csym
= coff_symbol_from (abfd
, sympp
[i
]);
1620 /* only do this if there is a coff representation of the input
1622 if (csym
->native
&& csym
->native
->u
.syment
.n_sclass
== C_FILE
)
1627 name
= csym
->symbol
.name
;
1630 if (!strcmp (name
, _TEXT
))
1633 else if (!strcmp (name
, ".wtext"))
1636 else if (!strcmp (name
, _DATA
))
1638 else if (!strcmp (name
, _BSS
))
1642 /* Now i == bfd_get_symcount (abfd). */
1643 /* @@ For now, don't deal with .file symbol. */
1646 if (!need_text
&& !need_data
&& !need_bss
&& !need_file
)
1648 nsyms
+= need_text
+ need_data
+ need_bss
+ need_file
;
1649 sympp2
= (asymbol
**) bfd_alloc_by_size_t (abfd
, nsyms
* sizeof (asymbol
*));
1652 bfd_set_error (bfd_error_no_memory
);
1655 memcpy (sympp2
, sympp
, i
* sizeof (asymbol
*));
1658 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
1662 sympp2
[i
++] = coff_section_symbol (abfd
, _TEXT
);
1664 sympp2
[i
++] = coff_section_symbol (abfd
, _DATA
);
1666 sympp2
[i
++] = coff_section_symbol (abfd
, _BSS
);
1667 BFD_ASSERT (i
== nsyms
);
1668 bfd_set_symtab (abfd
, sympp2
, nsyms
);
1672 #endif /* ! defined (RS6000COFF_C) */
1679 coff_write_object_contents (abfd
)
1683 boolean hasrelocs
= false;
1684 boolean haslinno
= false;
1685 file_ptr reloc_base
;
1686 file_ptr lineno_base
;
1688 unsigned long reloc_size
= 0;
1689 unsigned long lnno_size
= 0;
1690 asection
*text_sec
= NULL
;
1691 asection
*data_sec
= NULL
;
1692 asection
*bss_sec
= NULL
;
1694 struct internal_filehdr internal_f
;
1695 struct internal_aouthdr internal_a
;
1697 bfd_set_error (bfd_error_system_call
);
1699 if (abfd
->output_has_begun
== false)
1700 coff_compute_section_file_positions (abfd
);
1702 reloc_base
= obj_relocbase (abfd
);
1704 /* Make a pass through the symbol table to count line number entries and
1705 put them into the correct asections */
1707 lnno_size
= coff_count_linenumbers (abfd
) * LINESZ
;
1709 /* Work out the size of the reloc and linno areas */
1711 for (current
= abfd
->sections
; current
!= NULL
; current
=
1713 reloc_size
+= current
->reloc_count
* RELSZ
;
1715 lineno_base
= reloc_base
+ reloc_size
;
1716 sym_base
= lineno_base
+ lnno_size
;
1718 /* Indicate in each section->line_filepos its actual file address */
1719 for (current
= abfd
->sections
; current
!= NULL
; current
=
1722 if (current
->lineno_count
)
1724 current
->line_filepos
= lineno_base
;
1725 current
->moving_line_filepos
= lineno_base
;
1726 lineno_base
+= current
->lineno_count
* LINESZ
;
1730 current
->line_filepos
= 0;
1732 if (current
->reloc_count
)
1734 current
->rel_filepos
= reloc_base
;
1735 reloc_base
+= current
->reloc_count
* RELSZ
;
1739 current
->rel_filepos
= 0;
1743 /* Write section headers to the file. */
1744 internal_f
.f_nscns
= 0;
1747 (file_ptr
) ((abfd
->flags
& EXEC_P
) ?
1748 (FILHSZ
+ AOUTSZ
) : FILHSZ
),
1752 for (current
= abfd
->sections
;
1754 current
= current
->next
)
1756 struct internal_scnhdr section
;
1759 /* Do not include the .junk section. This is where we collect section
1760 data which we don't need. This is mainly the MS .debug$ data which
1761 stores codeview debug data. */
1762 if (strcmp (current
->name
, ".junk") == 0)
1767 /* If we've got a .reloc section, remember. */
1769 if (strcmp (current
->name
, ".reloc") == 0)
1771 pe_data (abfd
)->has_reloc_section
= 1;
1774 internal_f
.f_nscns
++;
1775 strncpy (&(section
.s_name
[0]), current
->name
, 8);
1777 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
1778 Ian Taylor <ian@cygnus.com>. */
1779 if (strcmp (current
->name
, _LIB
) == 0)
1780 section
.s_vaddr
= 0;
1783 section
.s_vaddr
= current
->lma
;
1784 section
.s_paddr
= current
->lma
;
1785 section
.s_size
= current
->_raw_size
;
1788 section
.s_paddr
= current
->_cooked_size
;
1792 If this section has no size or is unloadable then the scnptr
1795 if (current
->_raw_size
== 0 ||
1796 (current
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
1798 section
.s_scnptr
= 0;
1802 section
.s_scnptr
= current
->filepos
;
1804 section
.s_relptr
= current
->rel_filepos
;
1805 section
.s_lnnoptr
= current
->line_filepos
;
1806 section
.s_nreloc
= current
->reloc_count
;
1807 section
.s_nlnno
= current
->lineno_count
;
1808 if (current
->reloc_count
!= 0)
1810 if (current
->lineno_count
!= 0)
1813 section
.s_flags
= sec_to_styp_flags (current
->name
, current
->flags
);
1815 if (!strcmp (current
->name
, _TEXT
))
1819 else if (!strcmp (current
->name
, _DATA
))
1823 else if (!strcmp (current
->name
, _BSS
))
1829 section
.s_align
= (current
->alignment_power
1830 ? 1 << current
->alignment_power
1835 #ifdef COFF_IMAGE_WITH_PE
1836 /* suppress output of the sections if they are null. ld includes
1837 the bss and data sections even if there is no size assigned
1838 to them. NT loader doesn't like it if these section headers are
1839 included if the sections themselves are not needed */
1840 if (section
.s_size
== 0)
1841 internal_f
.f_nscns
--;
1846 if (coff_swap_scnhdr_out (abfd
, §ion
, &buff
) == 0
1847 || bfd_write ((PTR
) (&buff
), 1, SCNHSZ
, abfd
) != SCNHSZ
)
1854 /* OK, now set up the filehdr... */
1856 /* Don't include the internal abs section in the section count */
1859 We will NOT put a fucking timestamp in the header here. Every time you
1860 put it back, I will come in and take it out again. I'm sorry. This
1861 field does not belong here. We fill it with a 0 so it compares the
1862 same but is not a reasonable time. -- gnu@cygnus.com
1865 internal_f
.f_flags
= 0;
1867 if (abfd
->flags
& EXEC_P
)
1868 internal_f
.f_opthdr
= AOUTSZ
;
1870 internal_f
.f_opthdr
= 0;
1873 internal_f
.f_flags
|= F_RELFLG
;
1875 internal_f
.f_flags
|= F_LNNO
;
1876 if (abfd
->flags
& EXEC_P
)
1877 internal_f
.f_flags
|= F_EXEC
;
1879 if (!abfd
->xvec
->byteorder_big_p
)
1880 internal_f
.f_flags
|= F_AR32WR
;
1882 internal_f
.f_flags
|= F_AR32W
;
1885 FIXME, should do something about the other byte orders and
1889 memset (&internal_a
, 0, sizeof internal_a
);
1891 /* Set up architecture-dependent stuff */
1894 unsigned int magic
= 0;
1895 unsigned short flags
= 0;
1896 coff_set_flags (abfd
, &magic
, &flags
);
1897 internal_f
.f_magic
= magic
;
1898 internal_f
.f_flags
|= flags
;
1899 /* ...and the "opt"hdr... */
1902 #ifdef ULTRA3 /* NYU's machine */
1903 /* FIXME: This is a bogus check. I really want to see if there
1904 * is a .shbss or a .shdata section, if so then set the magic
1905 * number to indicate a shared data executable.
1907 if (internal_f
.f_nscns
>= 7)
1908 internal_a
.magic
= SHMAGIC
; /* Shared magic */
1911 internal_a
.magic
= NMAGIC
; /* Assume separate i/d */
1912 #define __A_MAGIC_SET__
1915 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
1916 #define __A_MAGIC_SET__
1919 #define __A_MAGIC_SET__
1920 internal_a
.magic
= PAGEMAGICBCS
;
1924 #define __A_MAGIC_SET__
1925 internal_a
.magic
= APOLLO_COFF_VERSION_NUMBER
;
1928 #if defined(M68) || defined(WE32K) || defined(M68K)
1929 #define __A_MAGIC_SET__
1931 internal_a
.magic
= LYNXCOFFMAGIC
;
1933 #endif /* M68 || WE32K || M68K */
1936 #define __A_MAGIC_SET__
1937 internal_a
.magic
= ZMAGIC
;
1940 #define __A_MAGIC_SET__
1941 internal_a
.magic
= PPCMAGIC
;
1944 #define __A_MAGIC_SET__
1946 internal_a
.magic
= LYNXCOFFMAGIC
;
1948 internal_a
.magic
= ZMAGIC
;
1953 #define __A_MAGIC_SET__
1955 internal_a
.magic
= LYNXCOFFMAGIC
;
1960 #define __A_MAGIC_SET__
1961 internal_a
.magic
= (abfd
->flags
& D_PAGED
) ? RS6K_AOUTHDR_ZMAGIC
:
1962 (abfd
->flags
& WP_TEXT
) ? RS6K_AOUTHDR_NMAGIC
:
1963 RS6K_AOUTHDR_OMAGIC
;
1966 #ifndef __A_MAGIC_SET__
1967 #include "Your aouthdr magic number is not being set!"
1969 #undef __A_MAGIC_SET__
1973 /* FIXME: Does anybody ever set this to another value? */
1974 internal_a
.vstamp
= 0;
1976 /* Now should write relocs, strings, syms */
1977 obj_sym_filepos (abfd
) = sym_base
;
1979 if (bfd_get_symcount (abfd
) != 0)
1982 #ifndef RS6000COFF_C
1983 if (!coff_add_missing_symbols (abfd
))
1986 if (!coff_renumber_symbols (abfd
, &firstundef
))
1988 coff_mangle_symbols (abfd
);
1989 if (! coff_write_symbols (abfd
))
1991 if (! coff_write_linenumbers (abfd
))
1993 if (! coff_write_relocs (abfd
, firstundef
))
1997 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
1998 backend linker, and obj_raw_syment_count is not valid until after
1999 coff_write_symbols is called. */
2000 if (obj_raw_syment_count (abfd
) != 0)
2001 internal_f
.f_symptr
= sym_base
;
2004 internal_f
.f_symptr
= 0;
2005 internal_f
.f_flags
|= F_LSYMS
;
2010 internal_a
.tsize
= bfd_get_section_size_before_reloc (text_sec
);
2011 internal_a
.text_start
= internal_a
.tsize
? text_sec
->vma
: 0;
2015 internal_a
.dsize
= bfd_get_section_size_before_reloc (data_sec
);
2016 internal_a
.data_start
= internal_a
.dsize
? data_sec
->vma
: 0;
2020 internal_a
.bsize
= bfd_get_section_size_before_reloc (bss_sec
);
2023 internal_a
.entry
= bfd_get_start_address (abfd
);
2024 internal_f
.f_nsyms
= obj_raw_syment_count (abfd
);
2026 /* now write them */
2027 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
2031 coff_swap_filehdr_out (abfd
, (PTR
) & internal_f
, (PTR
) & buff
);
2032 if (bfd_write ((PTR
) & buff
, 1, FILHSZ
, abfd
) != FILHSZ
)
2035 if (abfd
->flags
& EXEC_P
)
2038 coff_swap_aouthdr_out (abfd
, (PTR
) & internal_a
, (PTR
) & buff
);
2039 if (bfd_write ((PTR
) & buff
, 1, AOUTSZ
, abfd
) != AOUTSZ
)
2047 coff_set_section_contents (abfd
, section
, location
, offset
, count
)
2052 bfd_size_type count
;
2054 if (abfd
->output_has_begun
== false) /* set by bfd.c handler */
2055 coff_compute_section_file_positions (abfd
);
2058 /* If this is a .lib section, bump the vma address so that it
2059 winds up being the number of .lib sections output. This is
2060 right for SVR3.2. Shared libraries should probably get more
2061 generic support. Ian Taylor <ian@cygnus.com>. */
2062 if (strcmp (section
->name
, _LIB
) == 0)
2066 /* Don't write out bss sections - one way to do this is to
2067 see if the filepos has not been set. */
2068 if (section
->filepos
== 0)
2071 if (bfd_seek (abfd
, (file_ptr
) (section
->filepos
+ offset
), SEEK_SET
) != 0)
2076 return (bfd_write (location
, 1, count
, abfd
) == count
) ? true : false;
2082 coff_close_and_cleanup (abfd
)
2085 if (!bfd_read_p (abfd
))
2086 switch (abfd
->format
)
2089 if (!_bfd_write_archive_contents (abfd
))
2093 if (!coff_write_object_contents (abfd
))
2097 bfd_set_error (bfd_error_invalid_operation
);
2101 /* We depend on bfd_close to free all the memory on the obstack. */
2102 /* FIXME if bfd_release is not using obstacks! */
2109 buy_and_read (abfd
, where
, seek_direction
, size
)
2115 PTR area
= (PTR
) bfd_alloc (abfd
, size
);
2118 bfd_set_error (bfd_error_no_memory
);
2121 if (bfd_seek (abfd
, where
, seek_direction
) != 0
2122 || bfd_read (area
, 1, size
, abfd
) != size
)
2125 } /* buy_and_read() */
2131 Creating the linenumber table is done by reading in the entire
2132 coff linenumber table, and creating another table for internal use.
2134 A coff linenumber table is structured so that each function
2135 is marked as having a line number of 0. Each line within the
2136 function is an offset from the first line in the function. The
2137 base of the line number information for the table is stored in
2138 the symbol associated with the function.
2140 The information is copied from the external to the internal
2141 table, and each symbol which marks a function is marked by
2144 How does this work ?
2149 coff_slurp_line_table (abfd
, asect
)
2153 LINENO
*native_lineno
;
2154 alent
*lineno_cache
;
2156 BFD_ASSERT (asect
->lineno
== (alent
*) NULL
);
2158 native_lineno
= (LINENO
*) buy_and_read (abfd
,
2159 asect
->line_filepos
,
2162 asect
->lineno_count
));
2164 (alent
*) bfd_alloc (abfd
, (size_t) ((asect
->lineno_count
+ 1) * sizeof (alent
)));
2165 if (lineno_cache
== NULL
)
2167 bfd_set_error (bfd_error_no_memory
);
2172 unsigned int counter
= 0;
2173 alent
*cache_ptr
= lineno_cache
;
2174 LINENO
*src
= native_lineno
;
2176 while (counter
< asect
->lineno_count
)
2178 struct internal_lineno dst
;
2179 coff_swap_lineno_in (abfd
, src
, &dst
);
2180 cache_ptr
->line_number
= dst
.l_lnno
;
2182 if (cache_ptr
->line_number
== 0)
2184 coff_symbol_type
*sym
=
2185 (coff_symbol_type
*) (dst
.l_addr
.l_symndx
2186 + obj_raw_syments (abfd
))->u
.syment
._n
._n_n
._n_zeroes
;
2187 cache_ptr
->u
.sym
= (asymbol
*) sym
;
2188 sym
->lineno
= cache_ptr
;
2192 cache_ptr
->u
.offset
= dst
.l_addr
.l_paddr
2193 - bfd_section_vma (abfd
, asect
);
2194 } /* If no linenumber expect a symbol index */
2200 cache_ptr
->line_number
= 0;
2203 asect
->lineno
= lineno_cache
;
2204 /* FIXME, free native_lineno here, or use alloca or something. */
2209 coff_slurp_symbol_table (abfd
)
2212 combined_entry_type
*native_symbols
;
2213 coff_symbol_type
*cached_area
;
2214 unsigned int *table_ptr
;
2216 unsigned int number_of_symbols
= 0;
2218 if (obj_symbols (abfd
))
2221 /* Read in the symbol table */
2222 if ((native_symbols
= coff_get_normalized_symtab (abfd
)) == NULL
)
2227 /* Allocate enough room for all the symbols in cached form */
2228 cached_area
= ((coff_symbol_type
*)
2230 (obj_raw_syment_count (abfd
)
2231 * sizeof (coff_symbol_type
))));
2233 if (cached_area
== NULL
)
2235 bfd_set_error (bfd_error_no_memory
);
2238 table_ptr
= ((unsigned int *)
2240 (obj_raw_syment_count (abfd
)
2241 * sizeof (unsigned int))));
2243 if (table_ptr
== NULL
)
2245 bfd_set_error (bfd_error_no_memory
);
2250 coff_symbol_type
*dst
= cached_area
;
2251 unsigned int last_native_index
= obj_raw_syment_count (abfd
);
2252 unsigned int this_index
= 0;
2253 while (this_index
< last_native_index
)
2255 combined_entry_type
*src
= native_symbols
+ this_index
;
2256 table_ptr
[this_index
] = number_of_symbols
;
2257 dst
->symbol
.the_bfd
= abfd
;
2259 dst
->symbol
.name
= (char *) (src
->u
.syment
._n
._n_n
._n_offset
);
2260 /* We use the native name field to point to the cached field. */
2261 src
->u
.syment
._n
._n_n
._n_zeroes
= (long) dst
;
2262 dst
->symbol
.section
= coff_section_from_bfd_index (abfd
,
2263 src
->u
.syment
.n_scnum
);
2264 dst
->symbol
.flags
= 0;
2265 dst
->done_lineno
= false;
2267 switch (src
->u
.syment
.n_sclass
)
2272 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
2273 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
2274 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
2276 /* Fall through to next case */
2285 /* PE uses storage class 0x68 to denote a section symbol */
2288 if ((src
->u
.syment
.n_scnum
) == 0)
2290 if ((src
->u
.syment
.n_value
) == 0)
2292 dst
->symbol
.section
= bfd_und_section_ptr
;
2293 dst
->symbol
.value
= 0;
2297 dst
->symbol
.section
= bfd_com_section_ptr
;
2298 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2304 Base the value as an index from the base of the
2308 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
2309 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
2311 if (ISFCN ((src
->u
.syment
.n_type
)))
2314 A function ext does not go at the end of a file
2316 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
2321 /* If this symbol has a csect aux of type LD, the scnlen field
2322 is actually the index of the containing csect symbol. We
2323 need to pointerize it. */
2324 if (src
->u
.syment
.n_numaux
> 0)
2326 combined_entry_type
*aux
;
2328 aux
= src
+ src
->u
.syment
.n_numaux
- 1;
2329 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) == XTY_LD
)
2331 aux
->u
.auxent
.x_csect
.x_scnlen
.p
=
2332 native_symbols
+ aux
->u
.auxent
.x_csect
.x_scnlen
.l
;
2333 aux
->fix_scnlen
= 1;
2340 case C_STAT
: /* static */
2342 case C_LEAFSTAT
: /* static leaf procedure */
2344 case C_LABEL
: /* label */
2345 if (src
->u
.syment
.n_scnum
== -2)
2346 dst
->symbol
.flags
= BSF_DEBUGGING
;
2348 dst
->symbol
.flags
= BSF_LOCAL
;
2350 Base the value as an index from the base of the section, if
2353 if (dst
->symbol
.section
)
2354 dst
->symbol
.value
= (src
->u
.syment
.n_value
) -
2355 dst
->symbol
.section
->vma
;
2357 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2360 case C_MOS
: /* member of structure */
2361 case C_EOS
: /* end of structure */
2362 #ifdef NOTDEF /* C_AUTOARG has the same value */
2364 case C_GLBLREG
: /* A29k-specific storage class */
2367 case C_REGPARM
: /* register parameter */
2368 case C_REG
: /* register variable */
2370 case C_AUTOARG
: /* 960-specific storage class */
2372 case C_TPDEF
: /* type definition */
2374 case C_AUTO
: /* automatic variable */
2375 case C_FIELD
: /* bit field */
2376 case C_ENTAG
: /* enumeration tag */
2377 case C_MOE
: /* member of enumeration */
2378 case C_MOU
: /* member of union */
2379 case C_UNTAG
: /* union tag */
2380 dst
->symbol
.flags
= BSF_DEBUGGING
;
2381 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2384 case C_FILE
: /* file name */
2385 case C_STRTAG
: /* structure tag */
2387 case C_BINCL
: /* beginning of include file */
2388 case C_EINCL
: /* ending of include file */
2400 dst
->symbol
.flags
= BSF_DEBUGGING
;
2401 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2406 dst
->symbol
.flags
= BSF_DEBUGGING
;
2407 dst
->symbol
.value
= src
->u
.syment
.n_value
;
2409 /* The value is actually a symbol index. Save a pointer to
2410 the symbol instead of the index. FIXME: This should use a
2412 src
->u
.syment
.n_value
=
2413 (long) (native_symbols
+ src
->u
.syment
.n_value
);
2418 case C_BLOCK
: /* ".bb" or ".eb" */
2419 case C_FCN
: /* ".bf" or ".ef" */
2420 case C_EFCN
: /* physical end of function */
2421 dst
->symbol
.flags
= BSF_LOCAL
;
2423 Base the value as an index from the base of the section
2425 dst
->symbol
.value
= (src
->u
.syment
.n_value
) - dst
->symbol
.section
->vma
;
2429 case C_EXTDEF
: /* external definition */
2430 case C_ULABEL
: /* undefined label */
2431 case C_USTATIC
: /* undefined static */
2432 #ifndef COFF_WITH_PE
2433 /* C_LINE in regular coff is 0x68. NT has taken over this storage
2434 class to represent a section symbol */
2435 case C_LINE
: /* line # reformatted as symbol table entry */
2437 case C_ALIAS
: /* duplicate tag */
2438 case C_HIDDEN
: /* ext symbol in dmert public lib */
2440 (*_bfd_error_handler
)
2441 ("%s: Unrecognized storage class %d for %s symbol `%s'",
2442 bfd_get_filename (abfd
), src
->u
.syment
.n_sclass
,
2443 dst
->symbol
.section
->name
, dst
->symbol
.name
);
2444 dst
->symbol
.flags
= BSF_DEBUGGING
;
2445 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2449 /* BFD_ASSERT(dst->symbol.flags != 0);*/
2453 dst
->symbol
.udata
.i
= 0;
2454 dst
->lineno
= (alent
*) NULL
;
2455 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
2457 number_of_symbols
++;
2458 } /* walk the native symtab */
2459 } /* bfdize the native symtab */
2461 obj_symbols (abfd
) = cached_area
;
2462 obj_raw_syments (abfd
) = native_symbols
;
2464 bfd_get_symcount (abfd
) = number_of_symbols
;
2465 obj_convert (abfd
) = table_ptr
;
2466 /* Slurp the line tables for each section too */
2472 coff_slurp_line_table (abfd
, p
);
2477 } /* coff_slurp_symbol_table() */
2479 /* Check whether a symbol is globally visible. This is used by the
2480 COFF backend linker code in cofflink.c, since a couple of targets
2481 have globally visible symbols which are not class C_EXT. This
2482 function need not handle the case of n_class == C_EXT. */
2484 #undef OTHER_GLOBAL_CLASS
2487 #define OTHER_GLOBAL_CLASS C_LEAFEXT
2491 #define OTHER_GLOBAL_CLASS C_HIDEXT
2495 #define OTHER_GLOBAL_CLASS C_SECTION
2498 #ifdef OTHER_GLOBAL_CLASS
2501 coff_sym_is_global (abfd
, syment
)
2503 struct internal_syment
*syment
;
2505 if (syment
->n_sclass
== OTHER_GLOBAL_CLASS
)
2510 #undef OTHER_GLOBAL_CLASS
2512 #else /* ! defined (OTHER_GLOBAL_CLASS) */
2514 /* sym_is_global should not be defined if it has nothing to do. */
2516 #define coff_sym_is_global 0
2518 #endif /* ! defined (OTHER_GLOBAL_CLASS) */
2524 Coff relocations are easily transformed into the internal BFD form
2527 Reading a coff relocation table is done in the following stages:
2529 o Read the entire coff relocation table into memory.
2531 o Process each relocation in turn; first swap it from the
2532 external to the internal form.
2534 o Turn the symbol referenced in the relocation's symbol index
2535 into a pointer into the canonical symbol table.
2536 This table is the same as the one returned by a call to
2537 @code{bfd_canonicalize_symtab}. The back end will call that
2538 routine and save the result if a canonicalization hasn't been done.
2540 o The reloc index is turned into a pointer to a howto
2541 structure, in a back end specific way. For instance, the 386
2542 and 960 use the @code{r_type} to directly produce an index
2543 into a howto table vector; the 88k subtracts a number from the
2544 @code{r_type} field and creates an addend field.
2550 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
2552 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
2553 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
2554 coffsym = (obj_symbols (abfd) \
2555 + (cache_ptr->sym_ptr_ptr - symbols)); \
2557 coffsym = coff_symbol_from (abfd, ptr); \
2558 if (coffsym != (coff_symbol_type *) NULL \
2559 && coffsym->native->u.syment.n_scnum == 0) \
2560 cache_ptr->addend = 0; \
2561 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
2562 && ptr->section != (asection *) NULL) \
2563 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
2565 cache_ptr->addend = 0; \
2570 coff_slurp_reloc_table (abfd
, asect
, symbols
)
2575 RELOC
*native_relocs
;
2576 arelent
*reloc_cache
;
2581 if (asect
->relocation
)
2583 if (asect
->reloc_count
== 0)
2585 if (asect
->flags
& SEC_CONSTRUCTOR
)
2587 if (!coff_slurp_symbol_table (abfd
))
2590 (RELOC
*) buy_and_read (abfd
,
2594 asect
->reloc_count
));
2595 reloc_cache
= (arelent
*)
2596 bfd_alloc (abfd
, (size_t) (asect
->reloc_count
* sizeof (arelent
)));
2598 if (reloc_cache
== NULL
)
2600 bfd_set_error (bfd_error_no_memory
);
2605 for (idx
= 0; idx
< asect
->reloc_count
; idx
++)
2607 #ifdef RELOC_PROCESSING
2608 struct internal_reloc dst
;
2609 struct external_reloc
*src
;
2611 cache_ptr
= reloc_cache
+ idx
;
2612 src
= native_relocs
+ idx
;
2613 coff_swap_reloc_in (abfd
, src
, &dst
);
2615 RELOC_PROCESSING (cache_ptr
, &dst
, symbols
, abfd
, asect
);
2617 struct internal_reloc dst
;
2619 struct external_reloc
*src
;
2621 cache_ptr
= reloc_cache
+ idx
;
2622 src
= native_relocs
+ idx
;
2624 coff_swap_reloc_in (abfd
, src
, &dst
);
2627 cache_ptr
->address
= dst
.r_vaddr
;
2629 if (dst
.r_symndx
!= -1)
2631 /* @@ Should never be greater than count of symbols! */
2632 if (dst
.r_symndx
>= obj_conv_table_size (abfd
))
2634 cache_ptr
->sym_ptr_ptr
= symbols
+ obj_convert (abfd
)[dst
.r_symndx
];
2635 ptr
= *(cache_ptr
->sym_ptr_ptr
);
2639 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
2643 /* The symbols definitions that we have read in have been
2644 relocated as if their sections started at 0. But the offsets
2645 refering to the symbols in the raw data have not been
2646 modified, so we have to have a negative addend to compensate.
2648 Note that symbols which used to be common must be left alone */
2650 /* Calculate any reloc addend by looking at the symbol */
2651 CALC_ADDEND (abfd
, ptr
, dst
, cache_ptr
);
2653 cache_ptr
->address
-= asect
->vma
;
2654 /* !! cache_ptr->section = (asection *) NULL;*/
2656 /* Fill in the cache_ptr->howto field from dst.r_type */
2657 RTYPE2HOWTO (cache_ptr
, &dst
);
2662 asect
->relocation
= reloc_cache
;
2666 #ifndef coff_rtype_to_howto
2669 /* Get the howto structure for a reloc. This is only used if the file
2670 including this one defines coff_relocate_section to be
2671 _bfd_coff_generic_relocate_section, so it is OK if it does not
2672 always work. It is the responsibility of the including file to
2673 make sure it is reasonable if it is needed. */
2675 static reloc_howto_type
*coff_rtype_to_howto
2676 PARAMS ((bfd
*, asection
*, struct internal_reloc
*,
2677 struct coff_link_hash_entry
*, struct internal_syment
*,
2681 static reloc_howto_type
*
2682 coff_rtype_to_howto (abfd
, sec
, rel
, h
, sym
, addendp
)
2685 struct internal_reloc
*rel
;
2686 struct coff_link_hash_entry
*h
;
2687 struct internal_syment
*sym
;
2692 RTYPE2HOWTO (&genrel
, rel
);
2693 return genrel
.howto
;
2696 #else /* ! defined (RTYPE2HOWTO) */
2698 #define coff_rtype_to_howto NULL
2700 #endif /* ! defined (RTYPE2HOWTO) */
2701 #endif /* ! defined (coff_rtype_to_howto) */
2703 /* This is stupid. This function should be a boolean predicate. */
2705 coff_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
2711 arelent
*tblptr
= section
->relocation
;
2712 unsigned int count
= 0;
2715 if (section
->flags
& SEC_CONSTRUCTOR
)
2717 /* this section has relocs made up by us, they are not in the
2718 file, so take them out of their chain and place them into
2719 the data area provided */
2720 arelent_chain
*chain
= section
->constructor_chain
;
2721 for (count
= 0; count
< section
->reloc_count
; count
++)
2723 *relptr
++ = &chain
->relent
;
2724 chain
= chain
->next
;
2730 if (! coff_slurp_reloc_table (abfd
, section
, symbols
))
2733 tblptr
= section
->relocation
;
2735 for (; count
++ < section
->reloc_count
;)
2736 *relptr
++ = tblptr
++;
2741 return section
->reloc_count
;
2746 coff_sym_filepos (abfd
)
2749 return obj_sym_filepos (abfd
);
2753 #ifndef coff_reloc16_estimate
2754 #define coff_reloc16_estimate dummy_reloc16_estimate
2757 dummy_reloc16_estimate (abfd
, input_section
, reloc
, shrink
, link_info
)
2759 asection
*input_section
;
2761 unsigned int shrink
;
2762 struct bfd_link_info
*link_info
;
2769 #ifndef coff_reloc16_extra_cases
2770 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
2771 /* This works even if abort is not declared in any header file. */
2773 dummy_reloc16_extra_cases (abfd
, link_info
, link_order
, reloc
, data
, src_ptr
,
2776 struct bfd_link_info
*link_info
;
2777 struct bfd_link_order
*link_order
;
2780 unsigned int *src_ptr
;
2781 unsigned int *dst_ptr
;
2787 /* If coff_relocate_section is defined, we can use the optimized COFF
2788 backend linker. Otherwise we must continue to use the old linker. */
2789 #ifdef coff_relocate_section
2790 #ifndef coff_bfd_link_hash_table_create
2791 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
2793 #ifndef coff_bfd_link_add_symbols
2794 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
2796 #ifndef coff_bfd_final_link
2797 #define coff_bfd_final_link _bfd_coff_final_link
2799 #else /* ! defined (coff_relocate_section) */
2800 #define coff_relocate_section NULL
2801 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
2802 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
2803 #define coff_bfd_final_link _bfd_generic_final_link
2804 #endif /* ! defined (coff_relocate_section) */
2805 #define coff_bfd_link_split_section _bfd_generic_link_split_section
2807 #ifndef coff_start_final_link
2808 #define coff_start_final_link NULL
2811 #ifndef coff_adjust_symndx
2812 #define coff_adjust_symndx NULL
2815 static CONST bfd_coff_backend_data bfd_coff_std_swap_table
=
2817 coff_swap_aux_in
, coff_swap_sym_in
, coff_swap_lineno_in
,
2818 coff_swap_aux_out
, coff_swap_sym_out
,
2819 coff_swap_lineno_out
, coff_swap_reloc_out
,
2820 coff_swap_filehdr_out
, coff_swap_aouthdr_out
,
2821 coff_swap_scnhdr_out
,
2822 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
,
2823 #ifdef COFF_LONG_FILENAMES
2828 coff_swap_filehdr_in
, coff_swap_aouthdr_in
, coff_swap_scnhdr_in
,
2829 coff_swap_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
2830 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
2831 coff_slurp_symbol_table
, symname_in_debug_hook
,
2832 coff_reloc16_extra_cases
, coff_reloc16_estimate
,
2833 coff_sym_is_global
, coff_compute_section_file_positions
,
2834 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
2838 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
2839 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
2840 #define coff_get_section_contents _bfd_generic_get_section_contents
2842 #define coff_bfd_copy_private_symbol_data \
2843 _bfd_generic_bfd_copy_private_symbol_data
2844 #define coff_bfd_copy_private_section_data \
2845 _bfd_generic_bfd_copy_private_section_data
2846 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
2847 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
2848 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
2850 #ifndef coff_bfd_print_private_bfd_data
2851 #define coff_bfd_print_private_bfd_data \
2852 _bfd_generic_bfd_print_private_bfd_data
2855 #ifndef coff_bfd_is_local_label
2856 #define coff_bfd_is_local_label bfd_generic_is_local_label
2858 #ifndef coff_read_minisymbols
2859 #define coff_read_minisymbols _bfd_generic_read_minisymbols
2861 #ifndef coff_minisymbol_to_symbol
2862 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
2865 /* The reloc lookup routine must be supplied by each individual COFF
2867 #ifndef coff_bfd_reloc_type_lookup
2868 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
2871 #ifndef coff_bfd_get_relocated_section_contents
2872 #define coff_bfd_get_relocated_section_contents \
2873 bfd_generic_get_relocated_section_contents
2875 #ifndef coff_bfd_relax_section
2876 #define coff_bfd_relax_section bfd_generic_relax_section