1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright 1990, 91, 92, 93, 94, 95, 1996 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_pointerize_aux. *}
269 .unsigned int fix_scnlen : 1;
271 . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
272 . index into the line number entries. Set by
273 . coff_slurp_symbol_table. *}
274 .unsigned int fix_line : 1;
276 . {* The container for the symbol structure as read and translated
280 . union internal_auxent auxent;
281 . struct internal_syment syment;
283 .} combined_entry_type;
286 .{* Each canonical asymbol really looks like this: *}
288 .typedef struct coff_symbol_struct
290 . {* The actual symbol which the rest of BFD works with *}
293 . {* A pointer to the hidden information for this symbol *}
294 .combined_entry_type *native;
296 . {* A pointer to the linenumber information for this symbol *}
297 .struct lineno_cache_entry *lineno;
299 . {* Have the line numbers been relocated yet ? *}
300 .boolean done_lineno;
309 #include "coffswap.h"
313 /* void warning(); */
316 * Return a word with STYP_* (scnhdr.s_flags) flags set to represent the
317 * incoming SEC_* flags. The inverse of this function is styp_to_sec_flags().
318 * NOTE: If you add to/change this routine, you should mirror the changes
319 * in styp_to_sec_flags().
322 sec_to_styp_flags (sec_name
, sec_flags
)
323 CONST
char *sec_name
;
328 if (!strcmp (sec_name
, _TEXT
))
330 styp_flags
= STYP_TEXT
;
332 else if (!strcmp (sec_name
, _DATA
))
334 styp_flags
= STYP_DATA
;
336 else if (!strcmp (sec_name
, _BSS
))
338 styp_flags
= STYP_BSS
;
341 else if (!strcmp (sec_name
, _COMMENT
))
343 styp_flags
= STYP_INFO
;
344 #endif /* _COMMENT */
347 else if (!strcmp (sec_name
, _LIB
))
349 styp_flags
= STYP_LIB
;
353 else if (!strcmp (sec_name
, _LIT
))
355 styp_flags
= STYP_LIT
;
358 else if (!strcmp (sec_name
, ".debug"))
361 styp_flags
= STYP_DEBUG
;
363 styp_flags
= STYP_INFO
;
366 else if (!strncmp (sec_name
, ".stab", 5))
368 styp_flags
= STYP_INFO
;
371 else if (!strcmp (sec_name
, ".edata"))
373 styp_flags
= STYP_DATA
;
377 else if (!strcmp (sec_name
, _PAD
))
379 styp_flags
= STYP_PAD
;
381 else if (!strcmp (sec_name
, _LOADER
))
383 styp_flags
= STYP_LOADER
;
386 /* Try and figure out what it should be */
387 else if (sec_flags
& SEC_CODE
)
389 styp_flags
= STYP_TEXT
;
391 else if (sec_flags
& SEC_DATA
)
393 styp_flags
= STYP_DATA
;
395 else if (sec_flags
& SEC_READONLY
)
397 #ifdef STYP_LIT /* 29k readonly text/data section */
398 styp_flags
= STYP_LIT
;
400 styp_flags
= STYP_TEXT
;
401 #endif /* STYP_LIT */
403 else if (sec_flags
& SEC_LOAD
)
405 styp_flags
= STYP_TEXT
;
407 else if (sec_flags
& SEC_ALLOC
)
409 styp_flags
= STYP_BSS
;
413 if ((sec_flags
& (SEC_NEVER_LOAD
| SEC_COFF_SHARED_LIBRARY
)) != 0)
414 styp_flags
|= STYP_NOLOAD
;
420 * Return a word with SEC_* flags set to represent the incoming
421 * STYP_* flags (from scnhdr.s_flags). The inverse of this
422 * function is sec_to_styp_flags().
423 * NOTE: If you add to/change this routine, you should mirror the changes
424 * in sec_to_styp_flags().
427 styp_to_sec_flags (abfd
, hdr
, name
)
432 struct internal_scnhdr
*internal_s
= (struct internal_scnhdr
*) hdr
;
433 long styp_flags
= internal_s
->s_flags
;
434 flagword sec_flags
= 0;
437 if (styp_flags
& STYP_NOLOAD
)
439 sec_flags
|= SEC_NEVER_LOAD
;
441 #endif /* STYP_NOLOAD */
443 /* For 386 COFF, at least, an unloadable text or data section is
444 actually a shared library section. */
445 if (styp_flags
& STYP_TEXT
)
447 if (sec_flags
& SEC_NEVER_LOAD
)
448 sec_flags
|= SEC_CODE
| SEC_COFF_SHARED_LIBRARY
;
450 sec_flags
|= SEC_CODE
| SEC_LOAD
| SEC_ALLOC
;
452 else if (styp_flags
& STYP_DATA
)
454 if (sec_flags
& SEC_NEVER_LOAD
)
455 sec_flags
|= SEC_DATA
| SEC_COFF_SHARED_LIBRARY
;
457 sec_flags
|= SEC_DATA
| SEC_LOAD
| SEC_ALLOC
;
459 else if (styp_flags
& STYP_BSS
)
461 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
462 if (sec_flags
& SEC_NEVER_LOAD
)
463 sec_flags
|= SEC_ALLOC
| SEC_COFF_SHARED_LIBRARY
;
466 sec_flags
|= SEC_ALLOC
;
468 else if (styp_flags
& STYP_INFO
)
470 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
471 defined. coff_compute_section_file_positions uses
472 COFF_PAGE_SIZE to ensure that the low order bits of the
473 section VMA and the file offset match. If we don't know
474 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
475 and demand page loading of the file will fail. */
476 #ifdef COFF_PAGE_SIZE
477 sec_flags
|= SEC_DEBUGGING
;
480 else if (styp_flags
& STYP_PAD
)
484 else if (strcmp (name
, _TEXT
) == 0)
486 if (sec_flags
& SEC_NEVER_LOAD
)
487 sec_flags
|= SEC_CODE
| SEC_COFF_SHARED_LIBRARY
;
489 sec_flags
|= SEC_CODE
| SEC_LOAD
| SEC_ALLOC
;
491 else if (strcmp (name
, _DATA
) == 0)
493 if (sec_flags
& SEC_NEVER_LOAD
)
494 sec_flags
|= SEC_DATA
| SEC_COFF_SHARED_LIBRARY
;
496 sec_flags
|= SEC_DATA
| SEC_LOAD
| SEC_ALLOC
;
498 else if (strcmp (name
, _BSS
) == 0)
500 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
501 if (sec_flags
& SEC_NEVER_LOAD
)
502 sec_flags
|= SEC_ALLOC
| SEC_COFF_SHARED_LIBRARY
;
505 sec_flags
|= SEC_ALLOC
;
507 else if (strcmp (name
, ".debug") == 0
509 || strcmp (name
, _COMMENT
) == 0
511 || strncmp (name
, ".stab", 5) == 0)
513 #ifdef COFF_PAGE_SIZE
514 sec_flags
|= SEC_DEBUGGING
;
518 else if (strcmp (name
, _LIB
) == 0)
522 else if (strcmp (name
, _LIT
) == 0)
524 sec_flags
= SEC_LOAD
| SEC_ALLOC
| SEC_READONLY
;
529 sec_flags
|= SEC_ALLOC
| SEC_LOAD
;
532 #ifdef STYP_LIT /* A29k readonly text/data section type */
533 if ((styp_flags
& STYP_LIT
) == STYP_LIT
)
535 sec_flags
= (SEC_LOAD
| SEC_ALLOC
| SEC_READONLY
);
537 #endif /* STYP_LIT */
538 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
539 if (styp_flags
& STYP_OTHER_LOAD
)
541 sec_flags
= (SEC_LOAD
| SEC_ALLOC
);
543 #endif /* STYP_SDATA */
548 #define get_index(symbol) ((symbol)->udata.i)
552 bfd_coff_backend_data
556 Special entry points for gdb to swap in coff symbol table parts:
559 . void (*_bfd_coff_swap_aux_in) PARAMS ((
568 . void (*_bfd_coff_swap_sym_in) PARAMS ((
573 . void (*_bfd_coff_swap_lineno_in) PARAMS ((
579 Special entry points for gas to swap out coff parts:
581 . unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
590 . unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
595 . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
600 . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
605 . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
610 . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
615 . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
621 Special entry points for generic COFF routines to call target
622 dependent COFF routines:
624 . unsigned int _bfd_filhsz;
625 . unsigned int _bfd_aoutsz;
626 . unsigned int _bfd_scnhsz;
627 . unsigned int _bfd_symesz;
628 . unsigned int _bfd_auxesz;
629 . unsigned int _bfd_relsz;
630 . unsigned int _bfd_linesz;
631 . boolean _bfd_coff_long_filenames;
632 . void (*_bfd_coff_swap_filehdr_in) PARAMS ((
636 . void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
640 . void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
644 . void (*_bfd_coff_swap_reloc_in) PARAMS ((
648 . boolean (*_bfd_coff_bad_format_hook) PARAMS ((
650 . PTR internal_filehdr));
651 . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
653 . PTR internal_filehdr));
654 . PTR (*_bfd_coff_mkobject_hook) PARAMS ((
656 . PTR internal_filehdr,
657 . PTR internal_aouthdr));
658 . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
660 . PTR internal_scnhdr,
661 . const char *name));
662 . void (*_bfd_set_alignment_hook) PARAMS ((
665 . PTR internal_scnhdr));
666 . boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
668 . boolean (*_bfd_coff_symname_in_debug) PARAMS ((
670 . struct internal_syment *sym));
671 . boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
673 . combined_entry_type *table_base,
674 . combined_entry_type *symbol,
675 . unsigned int indaux,
676 . combined_entry_type *aux));
677 . boolean (*_bfd_coff_print_aux) PARAMS ((
680 . combined_entry_type *table_base,
681 . combined_entry_type *symbol,
682 . combined_entry_type *aux,
683 . unsigned int indaux));
684 . void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
686 . struct bfd_link_info *link_info,
687 . struct bfd_link_order *link_order,
690 . unsigned int *src_ptr,
691 . unsigned int *dst_ptr));
692 . int (*_bfd_coff_reloc16_estimate) PARAMS ((
694 . asection *input_section,
696 . unsigned int shrink,
697 . struct bfd_link_info *link_info));
698 . boolean (*_bfd_coff_sym_is_global) PARAMS ((
700 . struct internal_syment *));
701 . void (*_bfd_coff_compute_section_file_positions) PARAMS ((
703 . boolean (*_bfd_coff_start_final_link) PARAMS ((
705 . struct bfd_link_info *info));
706 . boolean (*_bfd_coff_relocate_section) PARAMS ((
708 . struct bfd_link_info *info,
710 . asection *input_section,
711 . bfd_byte *contents,
712 . struct internal_reloc *relocs,
713 . struct internal_syment *syms,
714 . asection **sections));
715 . reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
718 . struct internal_reloc *rel,
719 . struct coff_link_hash_entry *h,
720 . struct internal_syment *sym,
721 . bfd_vma *addendp));
722 . boolean (*_bfd_coff_adjust_symndx) PARAMS ((
724 . struct bfd_link_info *info,
727 . struct internal_reloc *reloc,
728 . boolean *adjustedp));
730 .} bfd_coff_backend_data;
732 .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
734 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
735 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
737 .#define bfd_coff_swap_sym_in(a,e,i) \
738 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
740 .#define bfd_coff_swap_lineno_in(a,e,i) \
741 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
743 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
744 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
746 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
747 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
749 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
750 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
752 .#define bfd_coff_swap_sym_out(abfd, i,o) \
753 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
755 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
756 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
758 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
759 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
761 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
762 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
764 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
765 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
766 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
767 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
768 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
769 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
770 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
771 .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
772 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
773 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
775 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
776 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
778 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
779 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
781 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
782 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
784 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
785 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
787 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
788 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
789 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
790 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
792 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
793 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
795 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
796 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
798 .#define bfd_coff_slurp_symbol_table(abfd)\
799 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
801 .#define bfd_coff_symname_in_debug(abfd, sym)\
802 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
804 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
805 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
806 . (abfd, file, base, symbol, aux, indaux))
808 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
809 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
810 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
812 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
813 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
814 . (abfd, section, reloc, shrink, link_info))
816 .#define bfd_coff_sym_is_global(abfd, sym)\
817 . ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
820 .#define bfd_coff_compute_section_file_positions(abfd)\
821 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
824 .#define bfd_coff_start_final_link(obfd, info)\
825 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
827 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
828 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
829 . (obfd, info, ibfd, o, con, rel, isyms, secs))
830 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
831 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
832 . (abfd, sec, rel, h, sym, addendp))
833 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
834 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
835 . (obfd, info, ibfd, sec, rel, adjustedp))
839 /* See whether the magic number matches. */
842 coff_bad_format_hook (abfd
, filehdr
)
846 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
848 if (BADMAG (*internal_f
))
851 /* if the optional header is NULL or not the correct size then
852 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
853 and Intel 960 readwrite headers (I960WRMAGIC) is that the
854 optional header is of a different size.
856 But the mips keeps extra stuff in it's opthdr, so dont check
860 #if defined(M88) || defined(I960)
861 if (internal_f
->f_opthdr
!= 0 && AOUTSZ
!= internal_f
->f_opthdr
)
869 initialize a section structure with information peculiar to this
870 particular implementation of coff
874 coff_new_section_hook (abfd
, section
)
878 section
->alignment_power
= COFF_DEFAULT_SECTION_ALIGNMENT_POWER
;
881 if (xcoff_data (abfd
)->text_align_power
!= 0
882 && strcmp (bfd_get_section_name (abfd
, section
), ".text") == 0)
883 section
->alignment_power
= xcoff_data (abfd
)->text_align_power
;
884 if (xcoff_data (abfd
)->data_align_power
!= 0
885 && strcmp (bfd_get_section_name (abfd
, section
), ".data") == 0)
886 section
->alignment_power
= xcoff_data (abfd
)->data_align_power
;
889 /* Allocate aux records for section symbols, to store size and
892 @@ Shouldn't use constant multiplier here! */
893 coffsymbol (section
->symbol
)->native
=
894 (combined_entry_type
*) bfd_zalloc (abfd
,
895 sizeof (combined_entry_type
) * 10);
897 /* The .stab section must be aligned to 2**2 at most, because
898 otherwise there may be gaps in the section which gdb will not
899 know how to interpret. Examining the section name is a hack, but
900 that is also how gdb locates the section.
901 We need to handle the .ctors and .dtors sections similarly, to
902 avoid introducing null words in the tables. */
903 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER
> 2
904 && (strncmp (section
->name
, ".stab", 5) == 0
905 || strcmp (section
->name
, ".ctors") == 0
906 || strcmp (section
->name
, ".dtors") == 0))
907 section
->alignment_power
= 2;
909 /* Similarly, the .stabstr section must be aligned to 2**0 at most. */
910 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER
> 0
911 && strncmp (section
->name
, ".stabstr", 8) == 0)
912 section
->alignment_power
= 0;
919 /* Set the alignment of a BFD section. */
922 coff_set_alignment_hook (abfd
, section
, scnhdr
)
927 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
930 for (i
= 0; i
< 32; i
++)
931 if ((1 << i
) >= hdr
->s_align
)
933 section
->alignment_power
= i
;
939 /* a couple of macros to help setting the alignment power field */
940 #define ALIGN_SET(field,x,y) \
941 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
943 section->alignment_power = y;\
946 #define ELIFALIGN_SET(field,x,y) \
947 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
949 section->alignment_power = y;\
953 coff_set_alignment_hook (abfd
, section
, scnhdr
)
958 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
960 ALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_64BYTES
, 6)
961 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_32BYTES
, 5)
962 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_16BYTES
, 4)
963 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_8BYTES
, 3)
964 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_4BYTES
, 2)
965 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_2BYTES
, 1)
966 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_1BYTES
, 0)
969 if (strcmp (section
->name
, ".idata$2") == 0)
971 section
->alignment_power
= 0;
973 else if (strcmp (section
->name
, ".idata$3") == 0)
975 section
->alignment_power
= 0;
977 else if (strcmp (section
->name
, ".idata$4") == 0)
979 section
->alignment_power
= 2;
981 else if (strcmp (section
->name
, ".idata$5") == 0)
983 section
->alignment_power
= 2;
985 else if (strcmp (section
->name
, ".idata$6") == 0)
987 section
->alignment_power
= 1;
989 else if (strcmp (section
->name
, ".reloc") == 0)
991 section
->alignment_power
= 1;
993 else if (strncmp (section
->name
, ".stab", 5) == 0)
995 section
->alignment_power
= 2;
1000 #undef ELIFALIGN_SET
1002 #else /* ! COFF_WITH_PE */
1005 /* We grossly abuse this function to handle XCOFF overflow headers.
1006 When we see one, we correct the reloc and line number counts in the
1007 real header, and remove the section we just created. */
1010 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1015 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1019 if ((hdr
->s_flags
& STYP_OVRFLO
) == 0)
1022 real_sec
= coff_section_from_bfd_index (abfd
, hdr
->s_nreloc
);
1023 if (real_sec
== NULL
)
1026 real_sec
->reloc_count
= hdr
->s_paddr
;
1027 real_sec
->lineno_count
= hdr
->s_vaddr
;
1029 for (ps
= &abfd
->sections
; *ps
!= NULL
; ps
= &(*ps
)->next
)
1034 --abfd
->section_count
;
1040 #else /* ! RS6000COFF_C */
1042 #define coff_set_alignment_hook \
1043 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1045 #endif /* ! RS6000COFF_C */
1046 #endif /* ! COFF_WITH_PE */
1049 #ifndef coff_mkobject
1051 coff_mkobject (abfd
)
1054 coff_data_type
*coff
;
1056 abfd
->tdata
.coff_obj_data
= (struct coff_tdata
*) bfd_zalloc (abfd
, sizeof (coff_data_type
));
1057 if (abfd
->tdata
.coff_obj_data
== 0)
1059 coff
= coff_data (abfd
);
1060 coff
->symbols
= (coff_symbol_type
*) NULL
;
1061 coff
->conversion_table
= (unsigned int *) NULL
;
1062 coff
->raw_syments
= (struct coff_ptr_struct
*) NULL
;
1063 coff
->relocbase
= 0;
1064 coff
->local_toc_sym_map
= 0;
1066 /* make_abs_section(abfd);*/
1072 /* Create the COFF backend specific information. */
1073 #ifndef coff_mkobject_hook
1075 coff_mkobject_hook (abfd
, filehdr
, aouthdr
)
1080 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1081 coff_data_type
*coff
;
1083 if (coff_mkobject (abfd
) == false)
1086 coff
= coff_data (abfd
);
1088 coff
->sym_filepos
= internal_f
->f_symptr
;
1090 /* These members communicate important constants about the symbol
1091 table to GDB's symbol-reading code. These `constants'
1092 unfortunately vary among coff implementations... */
1093 coff
->local_n_btmask
= N_BTMASK
;
1094 coff
->local_n_btshft
= N_BTSHFT
;
1095 coff
->local_n_tmask
= N_TMASK
;
1096 coff
->local_n_tshift
= N_TSHIFT
;
1097 coff
->local_symesz
= SYMESZ
;
1098 coff
->local_auxesz
= AUXESZ
;
1099 coff
->local_linesz
= LINESZ
;
1101 obj_raw_syment_count (abfd
) =
1102 obj_conv_table_size (abfd
) =
1103 internal_f
->f_nsyms
;
1106 if ((internal_f
->f_flags
& F_SHROBJ
) != 0)
1107 abfd
->flags
|= DYNAMIC
;
1108 if (aouthdr
!= NULL
&& internal_f
->f_opthdr
>= AOUTSZ
)
1110 struct internal_aouthdr
*internal_a
=
1111 (struct internal_aouthdr
*) aouthdr
;
1112 struct xcoff_tdata
*xcoff
;
1114 xcoff
= xcoff_data (abfd
);
1115 xcoff
->full_aouthdr
= true;
1116 xcoff
->toc
= internal_a
->o_toc
;
1117 if (internal_a
->o_sntoc
== 0)
1118 xcoff
->toc_section
= NULL
;
1120 xcoff
->toc_section
=
1121 coff_section_from_bfd_index (abfd
, internal_a
->o_sntoc
);
1122 if (internal_a
->o_snentry
== 0)
1123 xcoff
->entry_section
= NULL
;
1125 xcoff
->entry_section
=
1126 coff_section_from_bfd_index (abfd
, internal_a
->o_snentry
);
1127 xcoff
->text_align_power
= internal_a
->o_algntext
;
1128 xcoff
->data_align_power
= internal_a
->o_algndata
;
1129 xcoff
->modtype
= internal_a
->o_modtype
;
1130 xcoff
->cputype
= internal_a
->o_cputype
;
1131 xcoff
->maxdata
= internal_a
->o_maxdata
;
1132 xcoff
->maxstack
= internal_a
->o_maxstack
;
1140 /* Determine the machine architecture and type. FIXME: This is target
1141 dependent because the magic numbers are defined in the target
1142 dependent header files. But there is no particular need for this.
1143 If the magic numbers were moved to a separate file, this function
1144 would be target independent and would also be much more successful
1145 at linking together COFF files for different architectures. */
1148 coff_set_arch_mach_hook (abfd
, filehdr
)
1153 enum bfd_architecture arch
;
1154 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1157 switch (internal_f
->f_magic
)
1161 arch
= bfd_arch_powerpc
;
1162 machine
= 0; /* what does this mean? (krk) */
1168 case I386AIXMAGIC
: /* Danbury PS/2 AIX C Compiler */
1169 case LYNXCOFFMAGIC
: /* shadows the m68k Lynx number below, sigh */
1170 arch
= bfd_arch_i386
;
1174 #ifdef A29K_MAGIC_BIG
1175 case A29K_MAGIC_BIG
:
1176 case A29K_MAGIC_LITTLE
:
1177 arch
= bfd_arch_a29k
;
1183 arch
= bfd_arch_arm
;
1190 #ifdef MC68KBCSMAGIC
1193 #ifdef APOLLOM68KMAGIC
1194 case APOLLOM68KMAGIC
:
1196 #ifdef LYNXCOFFMAGIC
1199 arch
= bfd_arch_m68k
;
1207 arch
= bfd_arch_m88k
;
1213 arch
= bfd_arch_z8k
;
1214 switch (internal_f
->f_flags
& F_MACHMASK
)
1217 machine
= bfd_mach_z8001
;
1220 machine
= bfd_mach_z8002
;
1229 arch
= bfd_arch_i860
;
1236 arch
= bfd_arch_i960
;
1237 switch (F_I960TYPE
& internal_f
->f_flags
)
1241 machine
= bfd_mach_i960_core
;
1244 machine
= bfd_mach_i960_kb_sb
;
1247 machine
= bfd_mach_i960_mc
;
1250 machine
= bfd_mach_i960_xa
;
1253 machine
= bfd_mach_i960_ca
;
1256 machine
= bfd_mach_i960_ka_sa
;
1258 /* start-sanitize-i960xl */
1260 machine
= bfd_mach_i960_xl
;
1262 /* end-sanitize-i960xl */
1275 if (xcoff_data (abfd
)->cputype
!= -1)
1276 cputype
= xcoff_data (abfd
)->cputype
& 0xff;
1279 /* We did not get a value from the a.out header. If the
1280 file has not been stripped, we may be able to get the
1281 architecture information from the first symbol, if it
1282 is a .file symbol. */
1283 if (obj_raw_syment_count (abfd
) == 0)
1287 bfd_byte buf
[SYMESZ
];
1288 struct internal_syment sym
;
1290 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1291 || bfd_read (buf
, 1, SYMESZ
, abfd
) != SYMESZ
)
1293 coff_swap_sym_in (abfd
, (PTR
) buf
, (PTR
) &sym
);
1294 if (sym
.n_sclass
== C_FILE
)
1295 cputype
= sym
.n_type
& 0xff;
1301 /* FIXME: We don't handle all cases here. */
1307 /* PowerPC Macs use the same magic numbers as RS/6000
1308 (because that's how they were bootstrapped originally),
1309 but they are always PowerPC architecture. */
1310 arch
= bfd_arch_powerpc
;
1313 arch
= bfd_arch_rs6000
;
1315 #endif /* POWERMAC */
1319 arch
= bfd_arch_powerpc
;
1322 case 2: /* 64 bit PowerPC */
1323 arch
= bfd_arch_powerpc
;
1327 arch
= bfd_arch_powerpc
;
1331 arch
= bfd_arch_rs6000
;
1341 arch
= bfd_arch_we32k
;
1348 arch
= bfd_arch_h8300
;
1349 machine
= bfd_mach_h8300
;
1350 /* !! FIXME this probably isn't the right place for this */
1351 abfd
->flags
|= BFD_IS_RELAXABLE
;
1357 arch
= bfd_arch_h8300
;
1358 machine
= bfd_mach_h8300h
;
1359 /* !! FIXME this probably isn't the right place for this */
1360 abfd
->flags
|= BFD_IS_RELAXABLE
;
1364 #ifdef SH_ARCH_MAGIC_BIG
1365 case SH_ARCH_MAGIC_BIG
:
1366 case SH_ARCH_MAGIC_LITTLE
:
1374 arch
= bfd_arch_h8500
;
1381 #ifdef LYNXCOFFMAGIC
1384 arch
= bfd_arch_sparc
;
1389 default: /* Unreadable input file type */
1390 arch
= bfd_arch_obscure
;
1394 bfd_default_set_arch_mach (abfd
, arch
, machine
);
1398 #ifdef SYMNAME_IN_DEBUG
1401 symname_in_debug_hook (abfd
, sym
)
1403 struct internal_syment
*sym
;
1405 return SYMNAME_IN_DEBUG (sym
) ? true : false;
1410 #define symname_in_debug_hook \
1411 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
1417 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
1419 static boolean coff_pointerize_aux_hook
1420 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
1421 unsigned int, combined_entry_type
*));
1425 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
1427 combined_entry_type
*table_base
;
1428 combined_entry_type
*symbol
;
1429 unsigned int indaux
;
1430 combined_entry_type
*aux
;
1432 int class = symbol
->u
.syment
.n_sclass
;
1434 if ((class == C_EXT
|| class == C_HIDEXT
)
1435 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
1437 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) == XTY_LD
)
1439 aux
->u
.auxent
.x_csect
.x_scnlen
.p
=
1440 table_base
+ aux
->u
.auxent
.x_csect
.x_scnlen
.l
;
1441 aux
->fix_scnlen
= 1;
1444 /* Return true to indicate that the caller should not do any
1445 further work on this auxent. */
1449 /* Return false to indicate that this auxent should be handled by
1457 /* We don't want to pointerize bal entries. */
1459 static boolean coff_pointerize_aux_hook
1460 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
1461 unsigned int, combined_entry_type
*));
1465 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
1467 combined_entry_type
*table_base
;
1468 combined_entry_type
*symbol
;
1469 unsigned int indaux
;
1470 combined_entry_type
*aux
;
1472 /* Return true if we don't want to pointerize this aux entry, which
1473 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
1475 && (symbol
->u
.syment
.n_sclass
== C_LEAFPROC
1476 || symbol
->u
.syment
.n_sclass
== C_LEAFSTAT
1477 || symbol
->u
.syment
.n_sclass
== C_LEAFEXT
));
1482 #define coff_pointerize_aux_hook 0
1485 #endif /* ! RS6000COFF_C */
1487 /* Print an aux entry. This returns true if it has printed it. */
1489 static boolean coff_print_aux
1490 PARAMS ((bfd
*, FILE *, combined_entry_type
*, combined_entry_type
*,
1491 combined_entry_type
*, unsigned int));
1494 coff_print_aux (abfd
, file
, table_base
, symbol
, aux
, indaux
)
1497 combined_entry_type
*table_base
;
1498 combined_entry_type
*symbol
;
1499 combined_entry_type
*aux
;
1500 unsigned int indaux
;
1503 if ((symbol
->u
.syment
.n_sclass
== C_EXT
1504 || symbol
->u
.syment
.n_sclass
== C_HIDEXT
)
1505 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
1507 /* This is a csect entry. */
1508 fprintf (file
, "AUX ");
1509 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) != XTY_LD
)
1511 BFD_ASSERT (! aux
->fix_scnlen
);
1512 fprintf (file
, "val %5ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
1516 fprintf (file
, "indx ");
1517 if (! aux
->fix_scnlen
)
1518 fprintf (file
, "%4ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
1520 fprintf (file
, "%4ld",
1521 (long) (aux
->u
.auxent
.x_csect
.x_scnlen
.p
- table_base
));
1524 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
1525 aux
->u
.auxent
.x_csect
.x_parmhash
,
1526 (unsigned int) aux
->u
.auxent
.x_csect
.x_snhash
,
1527 SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
),
1528 SMTYP_ALIGN (aux
->u
.auxent
.x_csect
.x_smtyp
),
1529 (unsigned int) aux
->u
.auxent
.x_csect
.x_smclas
,
1530 aux
->u
.auxent
.x_csect
.x_stab
,
1531 (unsigned int) aux
->u
.auxent
.x_csect
.x_snstab
);
1536 /* Return false to indicate that no special action was taken. */
1544 To write relocations, the back end steps though the
1545 canonical relocation table and create an
1546 @code{internal_reloc}. The symbol index to use is removed from
1547 the @code{offset} field in the symbol table supplied. The
1548 address comes directly from the sum of the section base
1549 address and the relocation offset; the type is dug directly
1550 from the howto field. Then the @code{internal_reloc} is
1551 swapped into the shape of an @code{external_reloc} and written
1557 coff_write_relocs (abfd
, first_undef
)
1562 for (s
= abfd
->sections
; s
!= (asection
*) NULL
; s
= s
->next
)
1565 struct external_reloc dst
;
1567 arelent
**p
= s
->orelocation
;
1568 if (bfd_seek (abfd
, s
->rel_filepos
, SEEK_SET
) != 0)
1570 for (i
= 0; i
< s
->reloc_count
; i
++)
1572 struct internal_reloc n
;
1574 memset ((PTR
) & n
, 0, sizeof (n
));
1576 /* Now we've renumbered the symbols we know where the
1577 undefined symbols live in the table. Check the reloc
1578 entries for symbols who's output bfd isn't the right one.
1579 This is because the symbol was undefined (which means
1580 that all the pointers are never made to point to the same
1581 place). This is a bad thing,'cause the symbols attached
1582 to the output bfd are indexed, so that the relocation
1583 entries know which symbol index they point to. So we
1584 have to look up the output symbol here. */
1586 if (q
->sym_ptr_ptr
[0]->the_bfd
!= abfd
)
1589 const char *sname
= q
->sym_ptr_ptr
[0]->name
;
1590 asymbol
**outsyms
= abfd
->outsymbols
;
1591 for (i
= first_undef
; outsyms
[i
]; i
++)
1593 const char *intable
= outsyms
[i
]->name
;
1594 if (strcmp (intable
, sname
) == 0) {
1595 /* got a hit, so repoint the reloc */
1596 q
->sym_ptr_ptr
= outsyms
+ i
;
1602 n
.r_vaddr
= q
->address
+ s
->vma
;
1605 /* The 29k const/consth reloc pair is a real kludge. The consth
1606 part doesn't have a symbol; it has an offset. So rebuilt
1608 if (q
->howto
->type
== R_IHCONST
)
1609 n
.r_symndx
= q
->addend
;
1614 if (q
->sym_ptr_ptr
== bfd_abs_section_ptr
->symbol_ptr_ptr
)
1615 /* This is a relocation relative to the absolute symbol. */
1619 n
.r_symndx
= get_index ((*(q
->sym_ptr_ptr
)));
1620 /* Take notice if the symbol reloc points to a symbol
1621 we don't have in our symbol table. What should we
1623 if (n
.r_symndx
> obj_conv_table_size (abfd
))
1628 #ifdef SWAP_OUT_RELOC_OFFSET
1629 n
.r_offset
= q
->addend
;
1633 /* Work out reloc type from what is required */
1634 SELECT_RELOC (n
, q
->howto
);
1636 n
.r_type
= q
->howto
->type
;
1638 coff_swap_reloc_out (abfd
, &n
, &dst
);
1639 if (bfd_write ((PTR
) & dst
, 1, RELSZ
, abfd
) != RELSZ
)
1647 /* Set flags and magic number of a coff file from architecture and machine
1648 type. Result is true if we can represent the arch&type, false if not. */
1651 coff_set_flags (abfd
, magicp
, flagsp
)
1654 unsigned short *flagsp
;
1656 switch (bfd_get_arch (abfd
))
1661 switch (bfd_get_mach (abfd
))
1663 case bfd_mach_z8001
:
1666 case bfd_mach_z8002
:
1680 *magicp
= I960ROMAGIC
;
1682 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
1683 I960RWMAGIC); FIXME???
1685 switch (bfd_get_mach (abfd
))
1687 case bfd_mach_i960_core
:
1690 case bfd_mach_i960_kb_sb
:
1693 case bfd_mach_i960_mc
:
1696 case bfd_mach_i960_xa
:
1699 case bfd_mach_i960_ca
:
1702 case bfd_mach_i960_ka_sa
:
1705 /* start-sanitize-i960xl */
1706 case bfd_mach_i960_xl
:
1709 /* end-sanitize-i960xl */
1724 case bfd_arch_powerpc
:
1731 *magicp
= I386MAGIC
;
1733 /* Just overwrite the usual value if we're doing Lynx. */
1734 *magicp
= LYNXCOFFMAGIC
;
1741 *magicp
= I860MAGIC
;
1747 #ifdef APOLLOM68KMAGIC
1748 *magicp
= APOLLO_COFF_VERSION_NUMBER
;
1750 *magicp
= MC68MAGIC
;
1753 /* Just overwrite the usual value if we're doing Lynx. */
1754 *magicp
= LYNXCOFFMAGIC
;
1762 *magicp
= MC88OMAGIC
;
1767 case bfd_arch_h8300
:
1768 switch (bfd_get_mach (abfd
))
1770 case bfd_mach_h8300
:
1771 *magicp
= H8300MAGIC
;
1773 case bfd_mach_h8300h
:
1774 *magicp
= H8300HMAGIC
;
1780 #ifdef SH_ARCH_MAGIC_BIG
1782 if (bfd_big_endian (abfd
))
1783 *magicp
= SH_ARCH_MAGIC_BIG
;
1785 *magicp
= SH_ARCH_MAGIC_LITTLE
;
1791 case bfd_arch_sparc
:
1792 *magicp
= SPARCMAGIC
;
1794 /* Just overwrite the usual value if we're doing Lynx. */
1795 *magicp
= LYNXCOFFMAGIC
;
1802 case bfd_arch_h8500
:
1803 *magicp
= H8500MAGIC
;
1807 #ifdef A29K_MAGIC_BIG
1809 if (bfd_big_endian (abfd
))
1810 *magicp
= A29K_MAGIC_BIG
;
1812 *magicp
= A29K_MAGIC_LITTLE
;
1818 case bfd_arch_we32k
:
1819 *magicp
= WE32KMAGIC
;
1825 case bfd_arch_rs6000
:
1827 case bfd_arch_powerpc
:
1829 *magicp
= U802TOCMAGIC
;
1834 default: /* Unknown architecture */
1835 /* return false; -- fall through to "return false" below, to avoid
1836 "statement never reached" errors on the one below. */
1845 coff_set_arch_mach (abfd
, arch
, machine
)
1847 enum bfd_architecture arch
;
1848 unsigned long machine
;
1851 unsigned short dummy2
;
1853 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
1856 if (arch
!= bfd_arch_unknown
&&
1857 coff_set_flags (abfd
, &dummy1
, &dummy2
) != true)
1858 return false; /* We can't represent this type */
1860 return true; /* We're easy ... */
1864 /* Calculate the file position for each section. */
1867 coff_compute_section_file_positions (abfd
)
1871 asection
*previous
= (asection
*) NULL
;
1872 file_ptr sofar
= FILHSZ
;
1880 /* On XCOFF, if we have symbols, set up the .debug section. */
1881 if (bfd_get_symcount (abfd
) > 0)
1884 bfd_size_type i
, symcount
;
1888 symcount
= bfd_get_symcount (abfd
);
1889 for (symp
= abfd
->outsymbols
, i
= 0; i
< symcount
; symp
++, i
++)
1891 coff_symbol_type
*cf
;
1893 cf
= coff_symbol_from (abfd
, *symp
);
1895 && cf
->native
!= NULL
1896 && SYMNAME_IN_DEBUG (&cf
->native
->u
.syment
))
1900 len
= strlen (bfd_asymbol_name (*symp
));
1909 dsec
= bfd_make_section_old_way (abfd
, ".debug");
1912 dsec
->_raw_size
= sz
;
1913 dsec
->flags
|= SEC_HAS_CONTENTS
;
1918 #ifdef COFF_IMAGE_WITH_PE
1920 if (coff_data (abfd
)->link_info
)
1922 page_size
= pe_data (abfd
)->pe_opthdr
.FileAlignment
;
1925 page_size
= PE_DEF_FILE_ALIGNMENT
;
1927 #ifdef COFF_PAGE_SIZE
1928 int page_size
= COFF_PAGE_SIZE
;
1932 if (bfd_get_start_address (abfd
))
1934 /* A start address may have been added to the original file. In this
1935 case it will need an optional header to record it. */
1936 abfd
->flags
|= EXEC_P
;
1939 if (abfd
->flags
& EXEC_P
)
1942 else if (xcoff_data (abfd
)->full_aouthdr
)
1945 sofar
+= SMALL_AOUTSZ
;
1948 sofar
+= abfd
->section_count
* SCNHSZ
;
1951 /* XCOFF handles overflows in the reloc and line number count fields
1952 by allocating a new section header to hold the correct counts. */
1953 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
1954 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
1958 for (current
= abfd
->sections
, count
= 1;
1959 current
!= (asection
*) NULL
;
1960 current
= current
->next
, ++count
)
1962 current
->target_index
= count
;
1964 /* Only deal with sections which have contents */
1965 if (!(current
->flags
& SEC_HAS_CONTENTS
))
1969 /* Do not include the .junk section. This is where we collect section
1970 data which we don't need. This is mainly the MS .debug$ data which
1971 stores codeview debug data. */
1972 if (strcmp (current
->name
, ".junk") == 0)
1978 /* Align the sections in the file to the same boundary on
1979 which they are aligned in virtual memory. I960 doesn't
1980 do this (FIXME) so we can stay in sync with Intel. 960
1981 doesn't yet page from files... */
1983 if ((abfd
->flags
& EXEC_P
) != 0)
1985 /* make sure this section is aligned on the right boundary - by
1986 padding the previous section up if necessary */
1989 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
1990 if (previous
!= (asection
*) NULL
)
1992 previous
->_raw_size
+= sofar
- old_sofar
;
1998 /* In demand paged files the low order bits of the file offset
1999 must match the low order bits of the virtual address. */
2000 #ifdef COFF_PAGE_SIZE
2001 if ((abfd
->flags
& D_PAGED
) != 0
2002 && (current
->flags
& SEC_ALLOC
) != 0)
2003 sofar
+= (current
->vma
- sofar
) % page_size
;
2005 current
->filepos
= sofar
;
2007 #ifdef COFF_IMAGE_WITH_PE
2008 /* With PE we have to pad each section to be a multiple of its page size
2009 too, and remember both sizes. Cooked_size becomes very useful. */
2010 current
->_cooked_size
= current
->_raw_size
;
2011 current
->_raw_size
= (current
->_raw_size
+ page_size
-1) & -page_size
;
2014 sofar
+= current
->_raw_size
;
2017 /* make sure that this section is of the right size too */
2019 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
2020 current
->_raw_size
+= sofar
- old_sofar
;
2024 /* Force .lib sections to start at zero. The vma is then
2025 incremented in coff_set_section_contents. This is right for
2027 if (strcmp (current
->name
, _LIB
) == 0)
2028 bfd_set_section_vma (abfd
, current
, 0);
2034 obj_relocbase (abfd
) = sofar
;
2035 abfd
->output_has_begun
= true;
2039 #ifndef RS6000COFF_C
2041 /* If .file, .text, .data, .bss symbols are missing, add them. */
2042 /* @@ Should we only be adding missing symbols, or overriding the aux
2043 values for existing section symbols? */
2045 coff_add_missing_symbols (abfd
)
2048 unsigned int nsyms
= bfd_get_symcount (abfd
);
2049 asymbol
**sympp
= abfd
->outsymbols
;
2052 int need_text
= 1, need_data
= 1, need_bss
= 1, need_file
= 1;
2054 for (i
= 0; i
< nsyms
; i
++)
2056 coff_symbol_type
*csym
= coff_symbol_from (abfd
, sympp
[i
]);
2060 /* only do this if there is a coff representation of the input
2062 if (csym
->native
&& csym
->native
->u
.syment
.n_sclass
== C_FILE
)
2067 name
= csym
->symbol
.name
;
2070 if (!strcmp (name
, _TEXT
))
2073 else if (!strcmp (name
, ".wtext"))
2076 else if (!strcmp (name
, _DATA
))
2078 else if (!strcmp (name
, _BSS
))
2082 /* Now i == bfd_get_symcount (abfd). */
2083 /* @@ For now, don't deal with .file symbol. */
2086 if (!need_text
&& !need_data
&& !need_bss
&& !need_file
)
2088 nsyms
+= need_text
+ need_data
+ need_bss
+ need_file
;
2089 sympp2
= (asymbol
**) bfd_alloc_by_size_t (abfd
, nsyms
* sizeof (asymbol
*));
2092 memcpy (sympp2
, sympp
, i
* sizeof (asymbol
*));
2095 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
2099 sympp2
[i
++] = coff_section_symbol (abfd
, _TEXT
);
2101 sympp2
[i
++] = coff_section_symbol (abfd
, _DATA
);
2103 sympp2
[i
++] = coff_section_symbol (abfd
, _BSS
);
2104 BFD_ASSERT (i
== nsyms
);
2105 bfd_set_symtab (abfd
, sympp2
, nsyms
);
2109 #endif /* ! defined (RS6000COFF_C) */
2116 coff_write_object_contents (abfd
)
2120 boolean hasrelocs
= false;
2121 boolean haslinno
= false;
2123 file_ptr reloc_base
;
2124 file_ptr lineno_base
;
2126 unsigned long reloc_size
= 0;
2127 unsigned long lnno_size
= 0;
2128 asection
*text_sec
= NULL
;
2129 asection
*data_sec
= NULL
;
2130 asection
*bss_sec
= NULL
;
2132 struct internal_filehdr internal_f
;
2133 struct internal_aouthdr internal_a
;
2135 bfd_set_error (bfd_error_system_call
);
2137 /* Make a pass through the symbol table to count line number entries and
2138 put them into the correct asections */
2140 lnno_size
= coff_count_linenumbers (abfd
) * LINESZ
;
2142 if (abfd
->output_has_begun
== false)
2143 coff_compute_section_file_positions (abfd
);
2145 reloc_base
= obj_relocbase (abfd
);
2147 /* Work out the size of the reloc and linno areas */
2149 for (current
= abfd
->sections
; current
!= NULL
; current
=
2151 reloc_size
+= current
->reloc_count
* RELSZ
;
2153 lineno_base
= reloc_base
+ reloc_size
;
2154 sym_base
= lineno_base
+ lnno_size
;
2156 /* Indicate in each section->line_filepos its actual file address */
2157 for (current
= abfd
->sections
; current
!= NULL
; current
=
2160 if (current
->lineno_count
)
2162 current
->line_filepos
= lineno_base
;
2163 current
->moving_line_filepos
= lineno_base
;
2164 lineno_base
+= current
->lineno_count
* LINESZ
;
2168 current
->line_filepos
= 0;
2170 if (current
->reloc_count
)
2172 current
->rel_filepos
= reloc_base
;
2173 reloc_base
+= current
->reloc_count
* RELSZ
;
2177 current
->rel_filepos
= 0;
2181 /* Write section headers to the file. */
2182 internal_f
.f_nscns
= 0;
2184 if ((abfd
->flags
& EXEC_P
) != 0)
2185 scn_base
= FILHSZ
+ AOUTSZ
;
2190 if (xcoff_data (abfd
)->full_aouthdr
)
2193 scn_base
+= SMALL_AOUTSZ
;
2197 if (bfd_seek (abfd
, scn_base
, SEEK_SET
) != 0)
2200 for (current
= abfd
->sections
;
2202 current
= current
->next
)
2204 struct internal_scnhdr section
;
2207 /* Do not include the .junk section. This is where we collect section
2208 data which we don't need. This is mainly the MS .debug$ data which
2209 stores codeview debug data. */
2210 if (strcmp (current
->name
, ".junk") == 0)
2215 /* If we've got a .reloc section, remember. */
2217 #ifdef COFF_IMAGE_WITH_PE
2218 if (strcmp (current
->name
, ".reloc") == 0)
2220 pe_data (abfd
)->has_reloc_section
= 1;
2225 internal_f
.f_nscns
++;
2226 strncpy (&(section
.s_name
[0]), current
->name
, 8);
2228 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
2229 Ian Taylor <ian@cygnus.com>. */
2230 if (strcmp (current
->name
, _LIB
) == 0)
2231 section
.s_vaddr
= 0;
2234 section
.s_vaddr
= current
->vma
;
2235 section
.s_paddr
= current
->lma
;
2236 section
.s_size
= current
->_raw_size
;
2239 section
.s_paddr
= current
->_cooked_size
;
2243 If this section has no size or is unloadable then the scnptr
2246 if (current
->_raw_size
== 0 ||
2247 (current
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
2249 section
.s_scnptr
= 0;
2253 section
.s_scnptr
= current
->filepos
;
2255 section
.s_relptr
= current
->rel_filepos
;
2256 section
.s_lnnoptr
= current
->line_filepos
;
2257 section
.s_nreloc
= current
->reloc_count
;
2258 section
.s_nlnno
= current
->lineno_count
;
2259 if (current
->reloc_count
!= 0)
2261 if (current
->lineno_count
!= 0)
2265 /* Indicate the use of an XCOFF overflow section header. */
2266 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2268 section
.s_nreloc
= 0xffff;
2269 section
.s_nlnno
= 0xffff;
2273 section
.s_flags
= sec_to_styp_flags (current
->name
, current
->flags
);
2275 if (!strcmp (current
->name
, _TEXT
))
2279 else if (!strcmp (current
->name
, _DATA
))
2283 else if (!strcmp (current
->name
, _BSS
))
2289 section
.s_align
= (current
->alignment_power
2290 ? 1 << current
->alignment_power
2295 #ifdef COFF_IMAGE_WITH_PE
2296 /* suppress output of the sections if they are null. ld includes
2297 the bss and data sections even if there is no size assigned
2298 to them. NT loader doesn't like it if these section headers are
2299 included if the sections themselves are not needed */
2300 if (section
.s_size
== 0)
2301 internal_f
.f_nscns
--;
2306 if (coff_swap_scnhdr_out (abfd
, §ion
, &buff
) == 0
2307 || bfd_write ((PTR
) (&buff
), 1, SCNHSZ
, abfd
) != SCNHSZ
)
2313 /* XCOFF handles overflows in the reloc and line number count fields
2314 by creating a new section header to hold the correct values. */
2315 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2317 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2319 struct internal_scnhdr scnhdr
;
2322 internal_f
.f_nscns
++;
2323 strncpy (&(scnhdr
.s_name
[0]), current
->name
, 8);
2324 scnhdr
.s_paddr
= current
->reloc_count
;
2325 scnhdr
.s_vaddr
= current
->lineno_count
;
2327 scnhdr
.s_scnptr
= 0;
2328 scnhdr
.s_relptr
= current
->rel_filepos
;
2329 scnhdr
.s_lnnoptr
= current
->line_filepos
;
2330 scnhdr
.s_nreloc
= current
->target_index
;
2331 scnhdr
.s_nlnno
= current
->target_index
;
2332 scnhdr
.s_flags
= STYP_OVRFLO
;
2333 if (coff_swap_scnhdr_out (abfd
, &scnhdr
, &buff
) == 0
2334 || bfd_write ((PTR
) &buff
, 1, SCNHSZ
, abfd
) != SCNHSZ
)
2340 /* OK, now set up the filehdr... */
2342 /* Don't include the internal abs section in the section count */
2345 We will NOT put a fucking timestamp in the header here. Every time you
2346 put it back, I will come in and take it out again. I'm sorry. This
2347 field does not belong here. We fill it with a 0 so it compares the
2348 same but is not a reasonable time. -- gnu@cygnus.com
2350 internal_f
.f_timdat
= 0;
2352 internal_f
.f_flags
= 0;
2354 if (abfd
->flags
& EXEC_P
)
2355 internal_f
.f_opthdr
= AOUTSZ
;
2358 internal_f
.f_opthdr
= 0;
2360 if (xcoff_data (abfd
)->full_aouthdr
)
2361 internal_f
.f_opthdr
= AOUTSZ
;
2363 internal_f
.f_opthdr
= SMALL_AOUTSZ
;
2368 internal_f
.f_flags
|= F_RELFLG
;
2370 internal_f
.f_flags
|= F_LNNO
;
2371 if (abfd
->flags
& EXEC_P
)
2372 internal_f
.f_flags
|= F_EXEC
;
2374 /* FIXME: this is wrong for PPC_PE! */
2375 if (bfd_little_endian (abfd
))
2376 internal_f
.f_flags
|= F_AR32WR
;
2378 internal_f
.f_flags
|= F_AR32W
;
2381 FIXME, should do something about the other byte orders and
2386 if ((abfd
->flags
& DYNAMIC
) != 0)
2387 internal_f
.f_flags
|= F_SHROBJ
;
2388 if (bfd_get_section_by_name (abfd
, _LOADER
) != NULL
)
2389 internal_f
.f_flags
|= F_DYNLOAD
;
2392 memset (&internal_a
, 0, sizeof internal_a
);
2394 /* Set up architecture-dependent stuff */
2397 unsigned int magic
= 0;
2398 unsigned short flags
= 0;
2399 coff_set_flags (abfd
, &magic
, &flags
);
2400 internal_f
.f_magic
= magic
;
2401 internal_f
.f_flags
|= flags
;
2402 /* ...and the "opt"hdr... */
2405 #ifdef ULTRA3 /* NYU's machine */
2406 /* FIXME: This is a bogus check. I really want to see if there
2407 * is a .shbss or a .shdata section, if so then set the magic
2408 * number to indicate a shared data executable.
2410 if (internal_f
.f_nscns
>= 7)
2411 internal_a
.magic
= SHMAGIC
; /* Shared magic */
2414 internal_a
.magic
= NMAGIC
; /* Assume separate i/d */
2415 #define __A_MAGIC_SET__
2418 /* FIXME: What are the a.out magic numbers for the i860? */
2419 internal_a
.magic
= 0;
2420 #define __A_MAGIC_SET__
2423 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
2424 #define __A_MAGIC_SET__
2427 #define __A_MAGIC_SET__
2428 internal_a
.magic
= PAGEMAGICBCS
;
2432 #define __A_MAGIC_SET__
2433 internal_a
.magic
= APOLLO_COFF_VERSION_NUMBER
;
2436 #if defined(M68) || defined(WE32K) || defined(M68K)
2437 #define __A_MAGIC_SET__
2439 internal_a
.magic
= LYNXCOFFMAGIC
;
2441 #if defined (PAGEMAGICPEXECPAGED)
2442 internal_a
.magic
= PAGEMAGICPEXECPAGED
;
2445 #endif /* M68 || WE32K || M68K */
2448 #define __A_MAGIC_SET__
2449 internal_a
.magic
= ZMAGIC
;
2452 #define __A_MAGIC_SET__
2453 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
2456 #define __A_MAGIC_SET__
2458 internal_a
.magic
= LYNXCOFFMAGIC
;
2460 internal_a
.magic
= ZMAGIC
;
2465 #define __A_MAGIC_SET__
2467 internal_a
.magic
= LYNXCOFFMAGIC
;
2472 #define __A_MAGIC_SET__
2473 internal_a
.magic
= (abfd
->flags
& D_PAGED
) ? RS6K_AOUTHDR_ZMAGIC
:
2474 (abfd
->flags
& WP_TEXT
) ? RS6K_AOUTHDR_NMAGIC
:
2475 RS6K_AOUTHDR_OMAGIC
;
2478 #ifndef __A_MAGIC_SET__
2479 #include "Your aouthdr magic number is not being set!"
2481 #undef __A_MAGIC_SET__
2485 /* FIXME: Does anybody ever set this to another value? */
2486 internal_a
.vstamp
= 0;
2488 /* Now should write relocs, strings, syms */
2489 obj_sym_filepos (abfd
) = sym_base
;
2491 if (bfd_get_symcount (abfd
) != 0)
2494 #ifndef RS6000COFF_C
2495 if (!coff_add_missing_symbols (abfd
))
2498 if (!coff_renumber_symbols (abfd
, &firstundef
))
2500 coff_mangle_symbols (abfd
);
2501 if (! coff_write_symbols (abfd
))
2503 if (! coff_write_linenumbers (abfd
))
2505 if (! coff_write_relocs (abfd
, firstundef
))
2508 #ifdef COFF_IMAGE_WITH_PE
2510 else if ((abfd
->flags
& EXEC_P
) != 0)
2514 /* PowerPC PE appears to require that all executable files be
2515 rounded up to the page size. */
2518 BFD_ALIGN (sym_base
, COFF_PAGE_SIZE
) - 1,
2520 || bfd_write (&b
, 1, 1, abfd
) != 1)
2526 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
2527 backend linker, and obj_raw_syment_count is not valid until after
2528 coff_write_symbols is called. */
2529 if (obj_raw_syment_count (abfd
) != 0)
2531 internal_f
.f_symptr
= sym_base
;
2533 /* AIX appears to require that F_RELFLG not be set if there are
2534 local symbols but no relocations. */
2535 internal_f
.f_flags
&=~ F_RELFLG
;
2540 internal_f
.f_symptr
= 0;
2541 internal_f
.f_flags
|= F_LSYMS
;
2546 internal_a
.tsize
= bfd_get_section_size_before_reloc (text_sec
);
2547 internal_a
.text_start
= internal_a
.tsize
? text_sec
->vma
: 0;
2551 internal_a
.dsize
= bfd_get_section_size_before_reloc (data_sec
);
2552 internal_a
.data_start
= internal_a
.dsize
? data_sec
->vma
: 0;
2556 internal_a
.bsize
= bfd_get_section_size_before_reloc (bss_sec
);
2557 if (internal_a
.bsize
&& bss_sec
->vma
< internal_a
.data_start
)
2558 internal_a
.data_start
= bss_sec
->vma
;
2561 internal_a
.entry
= bfd_get_start_address (abfd
);
2562 internal_f
.f_nsyms
= obj_raw_syment_count (abfd
);
2565 if (xcoff_data (abfd
)->full_aouthdr
)
2568 asection
*loader_sec
;
2570 internal_a
.vstamp
= 1;
2572 if (xcoff_data (abfd
)->entry_section
!= NULL
)
2573 internal_a
.o_snentry
= xcoff_data (abfd
)->entry_section
->target_index
;
2576 internal_a
.o_snentry
= 0;
2577 internal_a
.entry
= (bfd_vma
) -1;
2580 if (text_sec
!= NULL
)
2582 internal_a
.o_sntext
= text_sec
->target_index
;
2583 internal_a
.o_algntext
= bfd_get_section_alignment (abfd
, text_sec
);
2587 internal_a
.o_sntext
= 0;
2588 internal_a
.o_algntext
= 0;
2590 if (data_sec
!= NULL
)
2592 internal_a
.o_sndata
= data_sec
->target_index
;
2593 internal_a
.o_algndata
= bfd_get_section_alignment (abfd
, data_sec
);
2597 internal_a
.o_sndata
= 0;
2598 internal_a
.o_algndata
= 0;
2600 loader_sec
= bfd_get_section_by_name (abfd
, ".loader");
2601 if (loader_sec
!= NULL
)
2602 internal_a
.o_snloader
= loader_sec
->target_index
;
2604 internal_a
.o_snloader
= 0;
2605 if (bss_sec
!= NULL
)
2606 internal_a
.o_snbss
= bss_sec
->target_index
;
2608 internal_a
.o_snbss
= 0;
2610 toc
= xcoff_data (abfd
)->toc
;
2611 internal_a
.o_toc
= toc
;
2612 if (xcoff_data (abfd
)->toc_section
== NULL
)
2613 internal_a
.o_sntoc
= 0;
2615 internal_a
.o_sntoc
= xcoff_data (abfd
)->toc_section
->target_index
;
2617 internal_a
.o_modtype
= xcoff_data (abfd
)->modtype
;
2618 if (xcoff_data (abfd
)->cputype
!= -1)
2619 internal_a
.o_cputype
= xcoff_data (abfd
)->cputype
;
2622 switch (bfd_get_arch (abfd
))
2624 case bfd_arch_rs6000
:
2625 internal_a
.o_cputype
= 4;
2627 case bfd_arch_powerpc
:
2628 if (bfd_get_mach (abfd
) == 0)
2629 internal_a
.o_cputype
= 3;
2631 internal_a
.o_cputype
= 1;
2637 internal_a
.o_maxstack
= xcoff_data (abfd
)->maxstack
;
2638 internal_a
.o_maxdata
= xcoff_data (abfd
)->maxdata
;
2642 /* now write them */
2643 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
2647 coff_swap_filehdr_out (abfd
, (PTR
) & internal_f
, (PTR
) & buff
);
2648 if (bfd_write ((PTR
) & buff
, 1, FILHSZ
, abfd
) != FILHSZ
)
2651 if (abfd
->flags
& EXEC_P
)
2654 coff_swap_aouthdr_out (abfd
, (PTR
) & internal_a
, (PTR
) & buff
);
2655 if (bfd_write ((PTR
) & buff
, 1, AOUTSZ
, abfd
) != AOUTSZ
)
2664 /* XCOFF seems to always write at least a small a.out header. */
2665 coff_swap_aouthdr_out (abfd
, (PTR
) &internal_a
, (PTR
) &buff
);
2666 if (xcoff_data (abfd
)->full_aouthdr
)
2669 size
= SMALL_AOUTSZ
;
2670 if (bfd_write ((PTR
) &buff
, 1, size
, abfd
) != size
)
2679 coff_set_section_contents (abfd
, section
, location
, offset
, count
)
2684 bfd_size_type count
;
2686 if (abfd
->output_has_begun
== false) /* set by bfd.c handler */
2687 coff_compute_section_file_positions (abfd
);
2691 /* The physical address field of a .lib section is used to hold the
2692 number of shared libraries in the section. This code counts the
2693 number of sections being written, and increments the lma field
2696 I have found no documentation on the contents of this section.
2697 Experimentation indicates that the section contains zero or more
2698 records, each of which has the following structure:
2700 - a (four byte) word holding the length of this record, in words,
2701 - a word that always seems to be set to "2",
2702 - the path to a shared library, null-terminated and then padded
2703 to a whole word boundary.
2705 bfd_assert calls have been added to alert if an attempt is made
2706 to write a section which doesn't follow these assumptions. The
2707 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
2708 <robertl@arnet.com> (Thanks!).
2710 Gvran Uddeborg <gvran@uddeborg.pp.se> */
2712 if (strcmp (section
->name
, _LIB
) == 0)
2714 bfd_byte
*rec
, *recend
;
2716 rec
= (bfd_byte
*) location
;
2717 recend
= rec
+ count
;
2718 while (rec
< recend
)
2721 rec
+= bfd_get_32 (abfd
, rec
) * 4;
2724 BFD_ASSERT (rec
== recend
);
2729 /* Don't write out bss sections - one way to do this is to
2730 see if the filepos has not been set. */
2731 if (section
->filepos
== 0)
2734 if (bfd_seek (abfd
, (file_ptr
) (section
->filepos
+ offset
), SEEK_SET
) != 0)
2739 return (bfd_write (location
, 1, count
, abfd
) == count
) ? true : false;
2745 coff_close_and_cleanup (abfd
)
2748 if (!bfd_read_p (abfd
))
2749 switch (abfd
->format
)
2752 if (!_bfd_write_archive_contents (abfd
))
2756 if (!coff_write_object_contents (abfd
))
2760 bfd_set_error (bfd_error_invalid_operation
);
2764 /* We depend on bfd_close to free all the memory on the obstack. */
2765 /* FIXME if bfd_release is not using obstacks! */
2772 buy_and_read (abfd
, where
, seek_direction
, size
)
2778 PTR area
= (PTR
) bfd_alloc (abfd
, size
);
2781 if (bfd_seek (abfd
, where
, seek_direction
) != 0
2782 || bfd_read (area
, 1, size
, abfd
) != size
)
2785 } /* buy_and_read() */
2791 Creating the linenumber table is done by reading in the entire
2792 coff linenumber table, and creating another table for internal use.
2794 A coff linenumber table is structured so that each function
2795 is marked as having a line number of 0. Each line within the
2796 function is an offset from the first line in the function. The
2797 base of the line number information for the table is stored in
2798 the symbol associated with the function.
2800 The information is copied from the external to the internal
2801 table, and each symbol which marks a function is marked by
2804 How does this work ?
2809 coff_slurp_line_table (abfd
, asect
)
2813 LINENO
*native_lineno
;
2814 alent
*lineno_cache
;
2816 BFD_ASSERT (asect
->lineno
== (alent
*) NULL
);
2818 native_lineno
= (LINENO
*) buy_and_read (abfd
,
2819 asect
->line_filepos
,
2822 asect
->lineno_count
));
2824 (alent
*) bfd_alloc (abfd
, (size_t) ((asect
->lineno_count
+ 1) * sizeof (alent
)));
2825 if (lineno_cache
== NULL
)
2829 unsigned int counter
= 0;
2830 alent
*cache_ptr
= lineno_cache
;
2831 LINENO
*src
= native_lineno
;
2833 while (counter
< asect
->lineno_count
)
2835 struct internal_lineno dst
;
2836 coff_swap_lineno_in (abfd
, src
, &dst
);
2837 cache_ptr
->line_number
= dst
.l_lnno
;
2839 if (cache_ptr
->line_number
== 0)
2841 coff_symbol_type
*sym
=
2842 (coff_symbol_type
*) (dst
.l_addr
.l_symndx
2843 + obj_raw_syments (abfd
))->u
.syment
._n
._n_n
._n_zeroes
;
2844 cache_ptr
->u
.sym
= (asymbol
*) sym
;
2845 if (sym
->lineno
!= NULL
)
2847 (*_bfd_error_handler
)
2848 ("%s: warning: duplicate line number information for `%s'",
2849 bfd_get_filename (abfd
),
2850 bfd_asymbol_name (&sym
->symbol
));
2852 sym
->lineno
= cache_ptr
;
2856 cache_ptr
->u
.offset
= dst
.l_addr
.l_paddr
2857 - bfd_section_vma (abfd
, asect
);
2858 } /* If no linenumber expect a symbol index */
2864 cache_ptr
->line_number
= 0;
2867 asect
->lineno
= lineno_cache
;
2868 /* FIXME, free native_lineno here, or use alloca or something. */
2873 coff_slurp_symbol_table (abfd
)
2876 combined_entry_type
*native_symbols
;
2877 coff_symbol_type
*cached_area
;
2878 unsigned int *table_ptr
;
2880 unsigned int number_of_symbols
= 0;
2882 if (obj_symbols (abfd
))
2885 /* Read in the symbol table */
2886 if ((native_symbols
= coff_get_normalized_symtab (abfd
)) == NULL
)
2891 /* Allocate enough room for all the symbols in cached form */
2892 cached_area
= ((coff_symbol_type
*)
2894 (obj_raw_syment_count (abfd
)
2895 * sizeof (coff_symbol_type
))));
2897 if (cached_area
== NULL
)
2899 table_ptr
= ((unsigned int *)
2901 (obj_raw_syment_count (abfd
)
2902 * sizeof (unsigned int))));
2904 if (table_ptr
== NULL
)
2908 coff_symbol_type
*dst
= cached_area
;
2909 unsigned int last_native_index
= obj_raw_syment_count (abfd
);
2910 unsigned int this_index
= 0;
2911 while (this_index
< last_native_index
)
2913 combined_entry_type
*src
= native_symbols
+ this_index
;
2914 table_ptr
[this_index
] = number_of_symbols
;
2915 dst
->symbol
.the_bfd
= abfd
;
2917 dst
->symbol
.name
= (char *) (src
->u
.syment
._n
._n_n
._n_offset
);
2918 /* We use the native name field to point to the cached field. */
2919 src
->u
.syment
._n
._n_n
._n_zeroes
= (long) dst
;
2920 dst
->symbol
.section
= coff_section_from_bfd_index (abfd
,
2921 src
->u
.syment
.n_scnum
);
2922 dst
->symbol
.flags
= 0;
2923 dst
->done_lineno
= false;
2925 switch (src
->u
.syment
.n_sclass
)
2930 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
2931 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
2932 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
2934 /* Fall through to next case */
2943 /* PE uses storage class 0x68 to denote a section symbol */
2945 /* PE uses storage class 0x67 for a weak external symbol. */
2948 if ((src
->u
.syment
.n_scnum
) == 0)
2950 if ((src
->u
.syment
.n_value
) == 0)
2952 dst
->symbol
.section
= bfd_und_section_ptr
;
2953 dst
->symbol
.value
= 0;
2957 dst
->symbol
.section
= bfd_com_section_ptr
;
2958 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2963 /* Base the value as an index from the base of the
2966 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
2967 dst
->symbol
.value
= (src
->u
.syment
.n_value
2968 - dst
->symbol
.section
->vma
);
2970 if (ISFCN ((src
->u
.syment
.n_type
)))
2972 /* A function ext does not go at the end of a
2974 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
2979 /* A C_HIDEXT symbol is not global. */
2980 if (src
->u
.syment
.n_sclass
== C_HIDEXT
)
2981 dst
->symbol
.flags
= BSF_LOCAL
;
2982 /* A symbol with a csect entry should not go at the end. */
2983 if (src
->u
.syment
.n_numaux
> 0)
2984 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
2988 if (src
->u
.syment
.n_sclass
== C_NT_WEAK
)
2989 dst
->symbol
.flags
= BSF_WEAK
;
2994 case C_STAT
: /* static */
2996 case C_LEAFSTAT
: /* static leaf procedure */
2998 case C_LABEL
: /* label */
2999 if (src
->u
.syment
.n_scnum
== -2)
3000 dst
->symbol
.flags
= BSF_DEBUGGING
;
3002 dst
->symbol
.flags
= BSF_LOCAL
;
3004 Base the value as an index from the base of the section, if
3007 if (dst
->symbol
.section
)
3008 dst
->symbol
.value
= (src
->u
.syment
.n_value
) -
3009 dst
->symbol
.section
->vma
;
3011 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3014 case C_MOS
: /* member of structure */
3015 case C_EOS
: /* end of structure */
3016 #ifdef NOTDEF /* C_AUTOARG has the same value */
3018 case C_GLBLREG
: /* A29k-specific storage class */
3021 case C_REGPARM
: /* register parameter */
3022 case C_REG
: /* register variable */
3024 case C_AUTOARG
: /* 960-specific storage class */
3026 case C_TPDEF
: /* type definition */
3028 case C_AUTO
: /* automatic variable */
3029 case C_FIELD
: /* bit field */
3030 case C_ENTAG
: /* enumeration tag */
3031 case C_MOE
: /* member of enumeration */
3032 case C_MOU
: /* member of union */
3033 case C_UNTAG
: /* union tag */
3034 dst
->symbol
.flags
= BSF_DEBUGGING
;
3035 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3038 case C_FILE
: /* file name */
3039 case C_STRTAG
: /* structure tag */
3054 dst
->symbol
.flags
= BSF_DEBUGGING
;
3055 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3059 case C_BINCL
: /* beginning of include file */
3060 case C_EINCL
: /* ending of include file */
3061 /* The value is actually a pointer into the line numbers
3062 of the file. We locate the line number entry, and
3063 set the section to the section which contains it, and
3064 the value to the index in that section. */
3068 dst
->symbol
.flags
= BSF_DEBUGGING
;
3069 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
3070 if (sec
->line_filepos
<= (file_ptr
) src
->u
.syment
.n_value
3071 && ((file_ptr
) (sec
->line_filepos
3072 + sec
->lineno_count
* LINESZ
)
3073 > (file_ptr
) src
->u
.syment
.n_value
))
3076 dst
->symbol
.value
= 0;
3079 dst
->symbol
.section
= sec
;
3080 dst
->symbol
.value
= ((src
->u
.syment
.n_value
3081 - sec
->line_filepos
)
3089 dst
->symbol
.flags
= BSF_DEBUGGING
;
3091 /* The value is actually a symbol index. Save a pointer
3092 to the symbol instead of the index. FIXME: This
3093 should use a union. */
3094 src
->u
.syment
.n_value
=
3095 (long) (native_symbols
+ src
->u
.syment
.n_value
);
3096 dst
->symbol
.value
= src
->u
.syment
.n_value
;
3101 case C_BLOCK
: /* ".bb" or ".eb" */
3102 case C_FCN
: /* ".bf" or ".ef" */
3103 case C_EFCN
: /* physical end of function */
3104 dst
->symbol
.flags
= BSF_LOCAL
;
3106 Base the value as an index from the base of the section
3108 dst
->symbol
.value
= (src
->u
.syment
.n_value
) - dst
->symbol
.section
->vma
;
3112 case C_EXTDEF
: /* external definition */
3113 case C_ULABEL
: /* undefined label */
3114 case C_USTATIC
: /* undefined static */
3115 #ifndef COFF_WITH_PE
3116 /* C_LINE in regular coff is 0x68. NT has taken over this storage
3117 class to represent a section symbol */
3118 case C_LINE
: /* line # reformatted as symbol table entry */
3119 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
3120 case C_ALIAS
: /* duplicate tag */
3122 case C_HIDDEN
: /* ext symbol in dmert public lib */
3124 (*_bfd_error_handler
)
3125 ("%s: Unrecognized storage class %d for %s symbol `%s'",
3126 bfd_get_filename (abfd
), src
->u
.syment
.n_sclass
,
3127 dst
->symbol
.section
->name
, dst
->symbol
.name
);
3128 dst
->symbol
.flags
= BSF_DEBUGGING
;
3129 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3133 /* BFD_ASSERT(dst->symbol.flags != 0);*/
3137 dst
->symbol
.udata
.i
= 0;
3138 dst
->lineno
= (alent
*) NULL
;
3139 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
3141 number_of_symbols
++;
3142 } /* walk the native symtab */
3143 } /* bfdize the native symtab */
3145 obj_symbols (abfd
) = cached_area
;
3146 obj_raw_syments (abfd
) = native_symbols
;
3148 bfd_get_symcount (abfd
) = number_of_symbols
;
3149 obj_convert (abfd
) = table_ptr
;
3150 /* Slurp the line tables for each section too */
3156 coff_slurp_line_table (abfd
, p
);
3161 } /* coff_slurp_symbol_table() */
3163 /* Check whether a symbol is globally visible. This is used by the
3164 COFF backend linker code in cofflink.c, since a couple of targets
3165 have globally visible symbols which are not class C_EXT. This
3166 function need not handle the case of n_class == C_EXT. */
3168 #undef OTHER_GLOBAL_CLASS
3171 #define OTHER_GLOBAL_CLASS C_LEAFEXT
3175 #define OTHER_GLOBAL_CLASS C_SECTION
3178 #ifdef OTHER_GLOBAL_CLASS
3181 coff_sym_is_global (abfd
, syment
)
3183 struct internal_syment
*syment
;
3185 if (syment
->n_sclass
== OTHER_GLOBAL_CLASS
)
3190 #undef OTHER_GLOBAL_CLASS
3192 #else /* ! defined (OTHER_GLOBAL_CLASS) */
3194 /* sym_is_global should not be defined if it has nothing to do. */
3196 #define coff_sym_is_global 0
3198 #endif /* ! defined (OTHER_GLOBAL_CLASS) */
3204 Coff relocations are easily transformed into the internal BFD form
3207 Reading a coff relocation table is done in the following stages:
3209 o Read the entire coff relocation table into memory.
3211 o Process each relocation in turn; first swap it from the
3212 external to the internal form.
3214 o Turn the symbol referenced in the relocation's symbol index
3215 into a pointer into the canonical symbol table.
3216 This table is the same as the one returned by a call to
3217 @code{bfd_canonicalize_symtab}. The back end will call that
3218 routine and save the result if a canonicalization hasn't been done.
3220 o The reloc index is turned into a pointer to a howto
3221 structure, in a back end specific way. For instance, the 386
3222 and 960 use the @code{r_type} to directly produce an index
3223 into a howto table vector; the 88k subtracts a number from the
3224 @code{r_type} field and creates an addend field.
3230 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
3232 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
3233 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
3234 coffsym = (obj_symbols (abfd) \
3235 + (cache_ptr->sym_ptr_ptr - symbols)); \
3237 coffsym = coff_symbol_from (abfd, ptr); \
3238 if (coffsym != (coff_symbol_type *) NULL \
3239 && coffsym->native->u.syment.n_scnum == 0) \
3240 cache_ptr->addend = 0; \
3241 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
3242 && ptr->section != (asection *) NULL) \
3243 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
3245 cache_ptr->addend = 0; \
3250 coff_slurp_reloc_table (abfd
, asect
, symbols
)
3255 RELOC
*native_relocs
;
3256 arelent
*reloc_cache
;
3261 if (asect
->relocation
)
3263 if (asect
->reloc_count
== 0)
3265 if (asect
->flags
& SEC_CONSTRUCTOR
)
3267 if (!coff_slurp_symbol_table (abfd
))
3270 (RELOC
*) buy_and_read (abfd
,
3274 asect
->reloc_count
));
3275 reloc_cache
= (arelent
*)
3276 bfd_alloc (abfd
, (size_t) (asect
->reloc_count
* sizeof (arelent
)));
3278 if (reloc_cache
== NULL
)
3282 for (idx
= 0; idx
< asect
->reloc_count
; idx
++)
3284 #ifdef RELOC_PROCESSING
3285 struct internal_reloc dst
;
3286 struct external_reloc
*src
;
3288 cache_ptr
= reloc_cache
+ idx
;
3289 src
= native_relocs
+ idx
;
3290 coff_swap_reloc_in (abfd
, src
, &dst
);
3292 RELOC_PROCESSING (cache_ptr
, &dst
, symbols
, abfd
, asect
);
3294 struct internal_reloc dst
;
3296 struct external_reloc
*src
;
3298 cache_ptr
= reloc_cache
+ idx
;
3299 src
= native_relocs
+ idx
;
3301 coff_swap_reloc_in (abfd
, src
, &dst
);
3304 cache_ptr
->address
= dst
.r_vaddr
;
3306 if (dst
.r_symndx
!= -1)
3308 /* @@ Should never be greater than count of symbols! */
3309 if (dst
.r_symndx
>= obj_conv_table_size (abfd
))
3311 cache_ptr
->sym_ptr_ptr
= symbols
+ obj_convert (abfd
)[dst
.r_symndx
];
3312 ptr
= *(cache_ptr
->sym_ptr_ptr
);
3316 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
3320 /* The symbols definitions that we have read in have been
3321 relocated as if their sections started at 0. But the offsets
3322 refering to the symbols in the raw data have not been
3323 modified, so we have to have a negative addend to compensate.
3325 Note that symbols which used to be common must be left alone */
3327 /* Calculate any reloc addend by looking at the symbol */
3328 CALC_ADDEND (abfd
, ptr
, dst
, cache_ptr
);
3330 cache_ptr
->address
-= asect
->vma
;
3331 /* !! cache_ptr->section = (asection *) NULL;*/
3333 /* Fill in the cache_ptr->howto field from dst.r_type */
3334 RTYPE2HOWTO (cache_ptr
, &dst
);
3339 asect
->relocation
= reloc_cache
;
3343 #ifndef coff_rtype_to_howto
3346 /* Get the howto structure for a reloc. This is only used if the file
3347 including this one defines coff_relocate_section to be
3348 _bfd_coff_generic_relocate_section, so it is OK if it does not
3349 always work. It is the responsibility of the including file to
3350 make sure it is reasonable if it is needed. */
3352 static reloc_howto_type
*coff_rtype_to_howto
3353 PARAMS ((bfd
*, asection
*, struct internal_reloc
*,
3354 struct coff_link_hash_entry
*, struct internal_syment
*,
3358 static reloc_howto_type
*
3359 coff_rtype_to_howto (abfd
, sec
, rel
, h
, sym
, addendp
)
3362 struct internal_reloc
*rel
;
3363 struct coff_link_hash_entry
*h
;
3364 struct internal_syment
*sym
;
3369 RTYPE2HOWTO (&genrel
, rel
);
3370 return genrel
.howto
;
3373 #else /* ! defined (RTYPE2HOWTO) */
3375 #define coff_rtype_to_howto NULL
3377 #endif /* ! defined (RTYPE2HOWTO) */
3378 #endif /* ! defined (coff_rtype_to_howto) */
3380 /* This is stupid. This function should be a boolean predicate. */
3382 coff_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
3388 arelent
*tblptr
= section
->relocation
;
3389 unsigned int count
= 0;
3392 if (section
->flags
& SEC_CONSTRUCTOR
)
3394 /* this section has relocs made up by us, they are not in the
3395 file, so take them out of their chain and place them into
3396 the data area provided */
3397 arelent_chain
*chain
= section
->constructor_chain
;
3398 for (count
= 0; count
< section
->reloc_count
; count
++)
3400 *relptr
++ = &chain
->relent
;
3401 chain
= chain
->next
;
3407 if (! coff_slurp_reloc_table (abfd
, section
, symbols
))
3410 tblptr
= section
->relocation
;
3412 for (; count
++ < section
->reloc_count
;)
3413 *relptr
++ = tblptr
++;
3418 return section
->reloc_count
;
3423 coff_sym_filepos (abfd
)
3426 return obj_sym_filepos (abfd
);
3430 #ifndef coff_reloc16_estimate
3431 #define coff_reloc16_estimate dummy_reloc16_estimate
3434 dummy_reloc16_estimate (abfd
, input_section
, reloc
, shrink
, link_info
)
3436 asection
*input_section
;
3438 unsigned int shrink
;
3439 struct bfd_link_info
*link_info
;
3446 #ifndef coff_reloc16_extra_cases
3447 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
3448 /* This works even if abort is not declared in any header file. */
3450 dummy_reloc16_extra_cases (abfd
, link_info
, link_order
, reloc
, data
, src_ptr
,
3453 struct bfd_link_info
*link_info
;
3454 struct bfd_link_order
*link_order
;
3457 unsigned int *src_ptr
;
3458 unsigned int *dst_ptr
;
3464 /* If coff_relocate_section is defined, we can use the optimized COFF
3465 backend linker. Otherwise we must continue to use the old linker. */
3466 #ifdef coff_relocate_section
3467 #ifndef coff_bfd_link_hash_table_create
3468 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
3470 #ifndef coff_bfd_link_add_symbols
3471 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
3473 #ifndef coff_bfd_final_link
3474 #define coff_bfd_final_link _bfd_coff_final_link
3476 #else /* ! defined (coff_relocate_section) */
3477 #define coff_relocate_section NULL
3478 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
3479 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
3480 #define coff_bfd_final_link _bfd_generic_final_link
3481 #endif /* ! defined (coff_relocate_section) */
3482 #define coff_bfd_link_split_section _bfd_generic_link_split_section
3484 #ifndef coff_start_final_link
3485 #define coff_start_final_link NULL
3488 #ifndef coff_adjust_symndx
3489 #define coff_adjust_symndx NULL
3492 static CONST bfd_coff_backend_data bfd_coff_std_swap_table
=
3494 coff_swap_aux_in
, coff_swap_sym_in
, coff_swap_lineno_in
,
3495 coff_swap_aux_out
, coff_swap_sym_out
,
3496 coff_swap_lineno_out
, coff_swap_reloc_out
,
3497 coff_swap_filehdr_out
, coff_swap_aouthdr_out
,
3498 coff_swap_scnhdr_out
,
3499 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
,
3500 #ifdef COFF_LONG_FILENAMES
3505 coff_swap_filehdr_in
, coff_swap_aouthdr_in
, coff_swap_scnhdr_in
,
3506 coff_swap_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
3507 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
3508 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
3509 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
3510 coff_sym_is_global
, coff_compute_section_file_positions
,
3511 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
3515 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
3516 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
3517 #define coff_get_section_contents _bfd_generic_get_section_contents
3519 #ifndef coff_bfd_copy_private_symbol_data
3520 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
3523 #ifndef coff_bfd_copy_private_section_data
3524 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
3527 #ifndef coff_bfd_copy_private_bfd_data
3528 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
3531 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
3532 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
3534 #ifndef coff_bfd_print_private_bfd_data
3535 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
3538 #ifndef coff_bfd_is_local_label
3539 #define coff_bfd_is_local_label bfd_generic_is_local_label
3541 #ifndef coff_read_minisymbols
3542 #define coff_read_minisymbols _bfd_generic_read_minisymbols
3544 #ifndef coff_minisymbol_to_symbol
3545 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
3548 /* The reloc lookup routine must be supplied by each individual COFF
3550 #ifndef coff_bfd_reloc_type_lookup
3551 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
3554 #ifndef coff_bfd_get_relocated_section_contents
3555 #define coff_bfd_get_relocated_section_contents \
3556 bfd_generic_get_relocated_section_contents
3558 #ifndef coff_bfd_relax_section
3559 #define coff_bfd_relax_section bfd_generic_relax_section