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));
729 . boolean (*_bfd_coff_link_add_one_symbol) PARAMS ((
730 . struct bfd_link_info *info,
736 . const char *string,
739 . struct bfd_link_hash_entry **hashp));
741 .} bfd_coff_backend_data;
743 .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
745 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
746 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
748 .#define bfd_coff_swap_sym_in(a,e,i) \
749 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
751 .#define bfd_coff_swap_lineno_in(a,e,i) \
752 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
754 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
755 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
757 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
758 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
760 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
761 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
763 .#define bfd_coff_swap_sym_out(abfd, i,o) \
764 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
766 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
767 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
769 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
770 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
772 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
773 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
775 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
776 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
777 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
778 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
779 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
780 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
781 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
782 .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
783 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
784 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
786 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
787 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
789 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
790 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
792 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
793 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
795 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
796 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
798 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
799 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
800 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
801 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
803 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
804 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
806 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
807 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
809 .#define bfd_coff_slurp_symbol_table(abfd)\
810 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
812 .#define bfd_coff_symname_in_debug(abfd, sym)\
813 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
815 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
816 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
817 . (abfd, file, base, symbol, aux, indaux))
819 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
820 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
821 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
823 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
824 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
825 . (abfd, section, reloc, shrink, link_info))
827 .#define bfd_coff_sym_is_global(abfd, sym)\
828 . ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
831 .#define bfd_coff_compute_section_file_positions(abfd)\
832 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
835 .#define bfd_coff_start_final_link(obfd, info)\
836 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
838 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
839 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
840 . (obfd, info, ibfd, o, con, rel, isyms, secs))
841 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
842 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
843 . (abfd, sec, rel, h, sym, addendp))
844 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
845 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
846 . (obfd, info, ibfd, sec, rel, adjustedp))
847 .#define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
848 . value, string, cp, coll, hashp)\
849 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
850 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
854 /* See whether the magic number matches. */
857 coff_bad_format_hook (abfd
, filehdr
)
861 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
863 if (BADMAG (*internal_f
))
866 /* if the optional header is NULL or not the correct size then
867 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
868 and Intel 960 readwrite headers (I960WRMAGIC) is that the
869 optional header is of a different size.
871 But the mips keeps extra stuff in it's opthdr, so dont check
875 #if defined(M88) || defined(I960)
876 if (internal_f
->f_opthdr
!= 0 && AOUTSZ
!= internal_f
->f_opthdr
)
884 initialize a section structure with information peculiar to this
885 particular implementation of coff
889 coff_new_section_hook (abfd
, section
)
893 section
->alignment_power
= COFF_DEFAULT_SECTION_ALIGNMENT_POWER
;
896 if (xcoff_data (abfd
)->text_align_power
!= 0
897 && strcmp (bfd_get_section_name (abfd
, section
), ".text") == 0)
898 section
->alignment_power
= xcoff_data (abfd
)->text_align_power
;
899 if (xcoff_data (abfd
)->data_align_power
!= 0
900 && strcmp (bfd_get_section_name (abfd
, section
), ".data") == 0)
901 section
->alignment_power
= xcoff_data (abfd
)->data_align_power
;
904 /* Allocate aux records for section symbols, to store size and
907 @@ Shouldn't use constant multiplier here! */
908 coffsymbol (section
->symbol
)->native
=
909 (combined_entry_type
*) bfd_zalloc (abfd
,
910 sizeof (combined_entry_type
) * 10);
912 /* The .stab section must be aligned to 2**2 at most, because
913 otherwise there may be gaps in the section which gdb will not
914 know how to interpret. Examining the section name is a hack, but
915 that is also how gdb locates the section.
916 We need to handle the .ctors and .dtors sections similarly, to
917 avoid introducing null words in the tables. */
918 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER
> 2
919 && (strncmp (section
->name
, ".stab", 5) == 0
920 || strcmp (section
->name
, ".ctors") == 0
921 || strcmp (section
->name
, ".dtors") == 0))
922 section
->alignment_power
= 2;
924 /* Similarly, the .stabstr section must be aligned to 2**0 at most. */
925 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER
> 0
926 && strncmp (section
->name
, ".stabstr", 8) == 0)
927 section
->alignment_power
= 0;
934 /* Set the alignment of a BFD section. */
937 coff_set_alignment_hook (abfd
, section
, scnhdr
)
942 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
945 for (i
= 0; i
< 32; i
++)
946 if ((1 << i
) >= hdr
->s_align
)
948 section
->alignment_power
= i
;
954 /* a couple of macros to help setting the alignment power field */
955 #define ALIGN_SET(field,x,y) \
956 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
958 section->alignment_power = y;\
961 #define ELIFALIGN_SET(field,x,y) \
962 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
964 section->alignment_power = y;\
968 coff_set_alignment_hook (abfd
, section
, scnhdr
)
973 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
975 ALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_64BYTES
, 6)
976 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_32BYTES
, 5)
977 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_16BYTES
, 4)
978 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_8BYTES
, 3)
979 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_4BYTES
, 2)
980 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_2BYTES
, 1)
981 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_1BYTES
, 0)
984 if (strcmp (section
->name
, ".idata$2") == 0)
986 section
->alignment_power
= 0;
988 else if (strcmp (section
->name
, ".idata$3") == 0)
990 section
->alignment_power
= 0;
992 else if (strcmp (section
->name
, ".idata$4") == 0)
994 section
->alignment_power
= 2;
996 else if (strcmp (section
->name
, ".idata$5") == 0)
998 section
->alignment_power
= 2;
1000 else if (strcmp (section
->name
, ".idata$6") == 0)
1002 section
->alignment_power
= 1;
1004 else if (strcmp (section
->name
, ".reloc") == 0)
1006 section
->alignment_power
= 1;
1008 else if (strncmp (section
->name
, ".stab", 5) == 0)
1010 section
->alignment_power
= 2;
1015 #undef ELIFALIGN_SET
1017 #else /* ! COFF_WITH_PE */
1020 /* We grossly abuse this function to handle XCOFF overflow headers.
1021 When we see one, we correct the reloc and line number counts in the
1022 real header, and remove the section we just created. */
1025 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1030 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1034 if ((hdr
->s_flags
& STYP_OVRFLO
) == 0)
1037 real_sec
= coff_section_from_bfd_index (abfd
, hdr
->s_nreloc
);
1038 if (real_sec
== NULL
)
1041 real_sec
->reloc_count
= hdr
->s_paddr
;
1042 real_sec
->lineno_count
= hdr
->s_vaddr
;
1044 for (ps
= &abfd
->sections
; *ps
!= NULL
; ps
= &(*ps
)->next
)
1049 --abfd
->section_count
;
1055 #else /* ! RS6000COFF_C */
1057 #define coff_set_alignment_hook \
1058 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1060 #endif /* ! RS6000COFF_C */
1061 #endif /* ! COFF_WITH_PE */
1064 #ifndef coff_mkobject
1066 coff_mkobject (abfd
)
1069 coff_data_type
*coff
;
1071 abfd
->tdata
.coff_obj_data
= (struct coff_tdata
*) bfd_zalloc (abfd
, sizeof (coff_data_type
));
1072 if (abfd
->tdata
.coff_obj_data
== 0)
1074 coff
= coff_data (abfd
);
1075 coff
->symbols
= (coff_symbol_type
*) NULL
;
1076 coff
->conversion_table
= (unsigned int *) NULL
;
1077 coff
->raw_syments
= (struct coff_ptr_struct
*) NULL
;
1078 coff
->relocbase
= 0;
1079 coff
->local_toc_sym_map
= 0;
1081 /* make_abs_section(abfd);*/
1087 /* Create the COFF backend specific information. */
1088 #ifndef coff_mkobject_hook
1090 coff_mkobject_hook (abfd
, filehdr
, aouthdr
)
1095 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1096 coff_data_type
*coff
;
1098 if (coff_mkobject (abfd
) == false)
1101 coff
= coff_data (abfd
);
1103 coff
->sym_filepos
= internal_f
->f_symptr
;
1105 /* These members communicate important constants about the symbol
1106 table to GDB's symbol-reading code. These `constants'
1107 unfortunately vary among coff implementations... */
1108 coff
->local_n_btmask
= N_BTMASK
;
1109 coff
->local_n_btshft
= N_BTSHFT
;
1110 coff
->local_n_tmask
= N_TMASK
;
1111 coff
->local_n_tshift
= N_TSHIFT
;
1112 coff
->local_symesz
= SYMESZ
;
1113 coff
->local_auxesz
= AUXESZ
;
1114 coff
->local_linesz
= LINESZ
;
1116 obj_raw_syment_count (abfd
) =
1117 obj_conv_table_size (abfd
) =
1118 internal_f
->f_nsyms
;
1121 if ((internal_f
->f_flags
& F_SHROBJ
) != 0)
1122 abfd
->flags
|= DYNAMIC
;
1123 if (aouthdr
!= NULL
&& internal_f
->f_opthdr
>= AOUTSZ
)
1125 struct internal_aouthdr
*internal_a
=
1126 (struct internal_aouthdr
*) aouthdr
;
1127 struct xcoff_tdata
*xcoff
;
1129 xcoff
= xcoff_data (abfd
);
1130 xcoff
->full_aouthdr
= true;
1131 xcoff
->toc
= internal_a
->o_toc
;
1132 xcoff
->sntoc
= internal_a
->o_sntoc
;
1133 xcoff
->snentry
= internal_a
->o_snentry
;
1134 xcoff
->text_align_power
= internal_a
->o_algntext
;
1135 xcoff
->data_align_power
= internal_a
->o_algndata
;
1136 xcoff
->modtype
= internal_a
->o_modtype
;
1137 xcoff
->cputype
= internal_a
->o_cputype
;
1138 xcoff
->maxdata
= internal_a
->o_maxdata
;
1139 xcoff
->maxstack
= internal_a
->o_maxstack
;
1147 /* Determine the machine architecture and type. FIXME: This is target
1148 dependent because the magic numbers are defined in the target
1149 dependent header files. But there is no particular need for this.
1150 If the magic numbers were moved to a separate file, this function
1151 would be target independent and would also be much more successful
1152 at linking together COFF files for different architectures. */
1155 coff_set_arch_mach_hook (abfd
, filehdr
)
1160 enum bfd_architecture arch
;
1161 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1164 switch (internal_f
->f_magic
)
1168 arch
= bfd_arch_powerpc
;
1169 machine
= 0; /* what does this mean? (krk) */
1175 case I386AIXMAGIC
: /* Danbury PS/2 AIX C Compiler */
1176 case LYNXCOFFMAGIC
: /* shadows the m68k Lynx number below, sigh */
1177 arch
= bfd_arch_i386
;
1181 #ifdef A29K_MAGIC_BIG
1182 case A29K_MAGIC_BIG
:
1183 case A29K_MAGIC_LITTLE
:
1184 arch
= bfd_arch_a29k
;
1190 arch
= bfd_arch_arm
;
1197 #ifdef MC68KBCSMAGIC
1200 #ifdef APOLLOM68KMAGIC
1201 case APOLLOM68KMAGIC
:
1203 #ifdef LYNXCOFFMAGIC
1206 arch
= bfd_arch_m68k
;
1214 arch
= bfd_arch_m88k
;
1220 arch
= bfd_arch_z8k
;
1221 switch (internal_f
->f_flags
& F_MACHMASK
)
1224 machine
= bfd_mach_z8001
;
1227 machine
= bfd_mach_z8002
;
1236 arch
= bfd_arch_i860
;
1243 arch
= bfd_arch_i960
;
1244 switch (F_I960TYPE
& internal_f
->f_flags
)
1248 machine
= bfd_mach_i960_core
;
1251 machine
= bfd_mach_i960_kb_sb
;
1254 machine
= bfd_mach_i960_mc
;
1257 machine
= bfd_mach_i960_xa
;
1260 machine
= bfd_mach_i960_ca
;
1263 machine
= bfd_mach_i960_ka_sa
;
1265 /* start-sanitize-i960xl */
1267 machine
= bfd_mach_i960_xl
;
1269 /* end-sanitize-i960xl */
1282 if (xcoff_data (abfd
)->cputype
!= -1)
1283 cputype
= xcoff_data (abfd
)->cputype
& 0xff;
1286 /* We did not get a value from the a.out header. If the
1287 file has not been stripped, we may be able to get the
1288 architecture information from the first symbol, if it
1289 is a .file symbol. */
1290 if (obj_raw_syment_count (abfd
) == 0)
1294 bfd_byte buf
[SYMESZ
];
1295 struct internal_syment sym
;
1297 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1298 || bfd_read (buf
, 1, SYMESZ
, abfd
) != SYMESZ
)
1300 coff_swap_sym_in (abfd
, (PTR
) buf
, (PTR
) &sym
);
1301 if (sym
.n_sclass
== C_FILE
)
1302 cputype
= sym
.n_type
& 0xff;
1308 /* FIXME: We don't handle all cases here. */
1314 /* PowerPC Macs use the same magic numbers as RS/6000
1315 (because that's how they were bootstrapped originally),
1316 but they are always PowerPC architecture. */
1317 arch
= bfd_arch_powerpc
;
1320 arch
= bfd_arch_rs6000
;
1322 #endif /* POWERMAC */
1326 arch
= bfd_arch_powerpc
;
1329 case 2: /* 64 bit PowerPC */
1330 arch
= bfd_arch_powerpc
;
1334 arch
= bfd_arch_powerpc
;
1338 arch
= bfd_arch_rs6000
;
1348 arch
= bfd_arch_we32k
;
1355 arch
= bfd_arch_h8300
;
1356 machine
= bfd_mach_h8300
;
1357 /* !! FIXME this probably isn't the right place for this */
1358 abfd
->flags
|= BFD_IS_RELAXABLE
;
1364 arch
= bfd_arch_h8300
;
1365 machine
= bfd_mach_h8300h
;
1366 /* !! FIXME this probably isn't the right place for this */
1367 abfd
->flags
|= BFD_IS_RELAXABLE
;
1371 #ifdef SH_ARCH_MAGIC_BIG
1372 case SH_ARCH_MAGIC_BIG
:
1373 case SH_ARCH_MAGIC_LITTLE
:
1381 arch
= bfd_arch_h8500
;
1388 #ifdef LYNXCOFFMAGIC
1391 arch
= bfd_arch_sparc
;
1396 default: /* Unreadable input file type */
1397 arch
= bfd_arch_obscure
;
1401 bfd_default_set_arch_mach (abfd
, arch
, machine
);
1405 #ifdef SYMNAME_IN_DEBUG
1408 symname_in_debug_hook (abfd
, sym
)
1410 struct internal_syment
*sym
;
1412 return SYMNAME_IN_DEBUG (sym
) ? true : false;
1417 #define symname_in_debug_hook \
1418 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
1424 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
1426 static boolean coff_pointerize_aux_hook
1427 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
1428 unsigned int, combined_entry_type
*));
1432 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
1434 combined_entry_type
*table_base
;
1435 combined_entry_type
*symbol
;
1436 unsigned int indaux
;
1437 combined_entry_type
*aux
;
1439 int class = symbol
->u
.syment
.n_sclass
;
1441 if ((class == C_EXT
|| class == C_HIDEXT
)
1442 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
1444 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) == XTY_LD
)
1446 aux
->u
.auxent
.x_csect
.x_scnlen
.p
=
1447 table_base
+ aux
->u
.auxent
.x_csect
.x_scnlen
.l
;
1448 aux
->fix_scnlen
= 1;
1451 /* Return true to indicate that the caller should not do any
1452 further work on this auxent. */
1456 /* Return false to indicate that this auxent should be handled by
1464 /* We don't want to pointerize bal entries. */
1466 static boolean coff_pointerize_aux_hook
1467 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
1468 unsigned int, combined_entry_type
*));
1472 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
1474 combined_entry_type
*table_base
;
1475 combined_entry_type
*symbol
;
1476 unsigned int indaux
;
1477 combined_entry_type
*aux
;
1479 /* Return true if we don't want to pointerize this aux entry, which
1480 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
1482 && (symbol
->u
.syment
.n_sclass
== C_LEAFPROC
1483 || symbol
->u
.syment
.n_sclass
== C_LEAFSTAT
1484 || symbol
->u
.syment
.n_sclass
== C_LEAFEXT
));
1489 #define coff_pointerize_aux_hook 0
1492 #endif /* ! RS6000COFF_C */
1494 /* Print an aux entry. This returns true if it has printed it. */
1496 static boolean coff_print_aux
1497 PARAMS ((bfd
*, FILE *, combined_entry_type
*, combined_entry_type
*,
1498 combined_entry_type
*, unsigned int));
1501 coff_print_aux (abfd
, file
, table_base
, symbol
, aux
, indaux
)
1504 combined_entry_type
*table_base
;
1505 combined_entry_type
*symbol
;
1506 combined_entry_type
*aux
;
1507 unsigned int indaux
;
1510 if ((symbol
->u
.syment
.n_sclass
== C_EXT
1511 || symbol
->u
.syment
.n_sclass
== C_HIDEXT
)
1512 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
1514 /* This is a csect entry. */
1515 fprintf (file
, "AUX ");
1516 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) != XTY_LD
)
1518 BFD_ASSERT (! aux
->fix_scnlen
);
1519 fprintf (file
, "val %5ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
1523 fprintf (file
, "indx ");
1524 if (! aux
->fix_scnlen
)
1525 fprintf (file
, "%4ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
1527 fprintf (file
, "%4ld",
1528 (long) (aux
->u
.auxent
.x_csect
.x_scnlen
.p
- table_base
));
1531 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
1532 aux
->u
.auxent
.x_csect
.x_parmhash
,
1533 (unsigned int) aux
->u
.auxent
.x_csect
.x_snhash
,
1534 SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
),
1535 SMTYP_ALIGN (aux
->u
.auxent
.x_csect
.x_smtyp
),
1536 (unsigned int) aux
->u
.auxent
.x_csect
.x_smclas
,
1537 aux
->u
.auxent
.x_csect
.x_stab
,
1538 (unsigned int) aux
->u
.auxent
.x_csect
.x_snstab
);
1543 /* Return false to indicate that no special action was taken. */
1551 To write relocations, the back end steps though the
1552 canonical relocation table and create an
1553 @code{internal_reloc}. The symbol index to use is removed from
1554 the @code{offset} field in the symbol table supplied. The
1555 address comes directly from the sum of the section base
1556 address and the relocation offset; the type is dug directly
1557 from the howto field. Then the @code{internal_reloc} is
1558 swapped into the shape of an @code{external_reloc} and written
1565 static int compare_arelent_ptr
PARAMS ((const PTR
, const PTR
));
1567 /* AUX's ld wants relocations to be sorted */
1569 compare_arelent_ptr (x
, y
)
1573 const arelent
**a
= (const arelent
**) x
;
1574 const arelent
**b
= (const arelent
**) y
;
1575 bfd_size_type aadr
= (*a
)->address
;
1576 bfd_size_type badr
= (*b
)->address
;
1578 return (aadr
< badr
? -1 : badr
< aadr
? 1 : 0);
1581 #endif /* TARG_AUX */
1584 coff_write_relocs (abfd
, first_undef
)
1590 for (s
= abfd
->sections
; s
!= (asection
*) NULL
; s
= s
->next
)
1593 struct external_reloc dst
;
1599 /* sort relocations before we write them out */
1600 p
= (arelent
**) bfd_malloc (s
->reloc_count
* sizeof (arelent
*));
1601 if (p
== NULL
&& s
->reloc_count
> 0)
1603 memcpy (p
, s
->orelocation
, s
->reloc_count
* sizeof (arelent
*));
1604 qsort (p
, s
->reloc_count
, sizeof (arelent
*), compare_arelent_ptr
);
1607 if (bfd_seek (abfd
, s
->rel_filepos
, SEEK_SET
) != 0)
1609 for (i
= 0; i
< s
->reloc_count
; i
++)
1611 struct internal_reloc n
;
1613 memset ((PTR
) & n
, 0, sizeof (n
));
1615 /* Now we've renumbered the symbols we know where the
1616 undefined symbols live in the table. Check the reloc
1617 entries for symbols who's output bfd isn't the right one.
1618 This is because the symbol was undefined (which means
1619 that all the pointers are never made to point to the same
1620 place). This is a bad thing,'cause the symbols attached
1621 to the output bfd are indexed, so that the relocation
1622 entries know which symbol index they point to. So we
1623 have to look up the output symbol here. */
1625 if (q
->sym_ptr_ptr
[0]->the_bfd
!= abfd
)
1628 const char *sname
= q
->sym_ptr_ptr
[0]->name
;
1629 asymbol
**outsyms
= abfd
->outsymbols
;
1630 for (i
= first_undef
; outsyms
[i
]; i
++)
1632 const char *intable
= outsyms
[i
]->name
;
1633 if (strcmp (intable
, sname
) == 0) {
1634 /* got a hit, so repoint the reloc */
1635 q
->sym_ptr_ptr
= outsyms
+ i
;
1641 n
.r_vaddr
= q
->address
+ s
->vma
;
1644 /* The 29k const/consth reloc pair is a real kludge. The consth
1645 part doesn't have a symbol; it has an offset. So rebuilt
1647 if (q
->howto
->type
== R_IHCONST
)
1648 n
.r_symndx
= q
->addend
;
1653 if (q
->sym_ptr_ptr
== bfd_abs_section_ptr
->symbol_ptr_ptr
)
1654 /* This is a relocation relative to the absolute symbol. */
1658 n
.r_symndx
= get_index ((*(q
->sym_ptr_ptr
)));
1659 /* Take notice if the symbol reloc points to a symbol
1660 we don't have in our symbol table. What should we
1662 if (n
.r_symndx
> obj_conv_table_size (abfd
))
1667 #ifdef SWAP_OUT_RELOC_OFFSET
1668 n
.r_offset
= q
->addend
;
1672 /* Work out reloc type from what is required */
1673 SELECT_RELOC (n
, q
->howto
);
1675 n
.r_type
= q
->howto
->type
;
1677 coff_swap_reloc_out (abfd
, &n
, &dst
);
1678 if (bfd_write ((PTR
) & dst
, 1, RELSZ
, abfd
) != RELSZ
)
1691 /* Set flags and magic number of a coff file from architecture and machine
1692 type. Result is true if we can represent the arch&type, false if not. */
1695 coff_set_flags (abfd
, magicp
, flagsp
)
1698 unsigned short *flagsp
;
1700 switch (bfd_get_arch (abfd
))
1705 switch (bfd_get_mach (abfd
))
1707 case bfd_mach_z8001
:
1710 case bfd_mach_z8002
:
1724 *magicp
= I960ROMAGIC
;
1726 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
1727 I960RWMAGIC); FIXME???
1729 switch (bfd_get_mach (abfd
))
1731 case bfd_mach_i960_core
:
1734 case bfd_mach_i960_kb_sb
:
1737 case bfd_mach_i960_mc
:
1740 case bfd_mach_i960_xa
:
1743 case bfd_mach_i960_ca
:
1746 case bfd_mach_i960_ka_sa
:
1749 /* start-sanitize-i960xl */
1750 case bfd_mach_i960_xl
:
1753 /* end-sanitize-i960xl */
1768 case bfd_arch_powerpc
:
1775 *magicp
= I386MAGIC
;
1777 /* Just overwrite the usual value if we're doing Lynx. */
1778 *magicp
= LYNXCOFFMAGIC
;
1785 *magicp
= I860MAGIC
;
1791 #ifdef APOLLOM68KMAGIC
1792 *magicp
= APOLLO_COFF_VERSION_NUMBER
;
1794 *magicp
= MC68MAGIC
;
1797 /* Just overwrite the usual value if we're doing Lynx. */
1798 *magicp
= LYNXCOFFMAGIC
;
1806 *magicp
= MC88OMAGIC
;
1811 case bfd_arch_h8300
:
1812 switch (bfd_get_mach (abfd
))
1814 case bfd_mach_h8300
:
1815 *magicp
= H8300MAGIC
;
1817 case bfd_mach_h8300h
:
1818 *magicp
= H8300HMAGIC
;
1824 #ifdef SH_ARCH_MAGIC_BIG
1826 if (bfd_big_endian (abfd
))
1827 *magicp
= SH_ARCH_MAGIC_BIG
;
1829 *magicp
= SH_ARCH_MAGIC_LITTLE
;
1835 case bfd_arch_sparc
:
1836 *magicp
= SPARCMAGIC
;
1838 /* Just overwrite the usual value if we're doing Lynx. */
1839 *magicp
= LYNXCOFFMAGIC
;
1846 case bfd_arch_h8500
:
1847 *magicp
= H8500MAGIC
;
1851 #ifdef A29K_MAGIC_BIG
1853 if (bfd_big_endian (abfd
))
1854 *magicp
= A29K_MAGIC_BIG
;
1856 *magicp
= A29K_MAGIC_LITTLE
;
1862 case bfd_arch_we32k
:
1863 *magicp
= WE32KMAGIC
;
1869 case bfd_arch_rs6000
:
1871 case bfd_arch_powerpc
:
1873 *magicp
= U802TOCMAGIC
;
1878 default: /* Unknown architecture */
1879 /* return false; -- fall through to "return false" below, to avoid
1880 "statement never reached" errors on the one below. */
1889 coff_set_arch_mach (abfd
, arch
, machine
)
1891 enum bfd_architecture arch
;
1892 unsigned long machine
;
1895 unsigned short dummy2
;
1897 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
1900 if (arch
!= bfd_arch_unknown
&&
1901 coff_set_flags (abfd
, &dummy1
, &dummy2
) != true)
1902 return false; /* We can't represent this type */
1904 return true; /* We're easy ... */
1908 /* Calculate the file position for each section. */
1911 coff_compute_section_file_positions (abfd
)
1915 asection
*previous
= (asection
*) NULL
;
1916 file_ptr sofar
= FILHSZ
;
1924 /* On XCOFF, if we have symbols, set up the .debug section. */
1925 if (bfd_get_symcount (abfd
) > 0)
1928 bfd_size_type i
, symcount
;
1932 symcount
= bfd_get_symcount (abfd
);
1933 for (symp
= abfd
->outsymbols
, i
= 0; i
< symcount
; symp
++, i
++)
1935 coff_symbol_type
*cf
;
1937 cf
= coff_symbol_from (abfd
, *symp
);
1939 && cf
->native
!= NULL
1940 && SYMNAME_IN_DEBUG (&cf
->native
->u
.syment
))
1944 len
= strlen (bfd_asymbol_name (*symp
));
1953 dsec
= bfd_make_section_old_way (abfd
, ".debug");
1956 dsec
->_raw_size
= sz
;
1957 dsec
->flags
|= SEC_HAS_CONTENTS
;
1962 #ifdef COFF_IMAGE_WITH_PE
1964 if (coff_data (abfd
)->link_info
)
1966 page_size
= pe_data (abfd
)->pe_opthdr
.FileAlignment
;
1969 page_size
= PE_DEF_FILE_ALIGNMENT
;
1971 #ifdef COFF_PAGE_SIZE
1972 int page_size
= COFF_PAGE_SIZE
;
1976 if (bfd_get_start_address (abfd
))
1978 /* A start address may have been added to the original file. In this
1979 case it will need an optional header to record it. */
1980 abfd
->flags
|= EXEC_P
;
1983 if (abfd
->flags
& EXEC_P
)
1986 else if (xcoff_data (abfd
)->full_aouthdr
)
1989 sofar
+= SMALL_AOUTSZ
;
1992 sofar
+= abfd
->section_count
* SCNHSZ
;
1995 /* XCOFF handles overflows in the reloc and line number count fields
1996 by allocating a new section header to hold the correct counts. */
1997 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
1998 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2002 for (current
= abfd
->sections
, count
= 1;
2003 current
!= (asection
*) NULL
;
2004 current
= current
->next
, ++count
)
2006 current
->target_index
= count
;
2008 /* Only deal with sections which have contents */
2009 if (!(current
->flags
& SEC_HAS_CONTENTS
))
2013 /* Do not include the .junk section. This is where we collect section
2014 data which we don't need. This is mainly the MS .debug$ data which
2015 stores codeview debug data. */
2016 if (strcmp (current
->name
, ".junk") == 0)
2022 /* Align the sections in the file to the same boundary on
2023 which they are aligned in virtual memory. I960 doesn't
2024 do this (FIXME) so we can stay in sync with Intel. 960
2025 doesn't yet page from files... */
2027 if ((abfd
->flags
& EXEC_P
) != 0)
2029 /* make sure this section is aligned on the right boundary - by
2030 padding the previous section up if necessary */
2033 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
2034 if (previous
!= (asection
*) NULL
)
2036 previous
->_raw_size
+= sofar
- old_sofar
;
2042 /* In demand paged files the low order bits of the file offset
2043 must match the low order bits of the virtual address. */
2044 #ifdef COFF_PAGE_SIZE
2045 if ((abfd
->flags
& D_PAGED
) != 0
2046 && (current
->flags
& SEC_ALLOC
) != 0)
2047 sofar
+= (current
->vma
- sofar
) % page_size
;
2049 current
->filepos
= sofar
;
2051 #ifdef COFF_IMAGE_WITH_PE
2052 /* With PE we have to pad each section to be a multiple of its page size
2053 too, and remember both sizes. Cooked_size becomes very useful. */
2054 current
->_cooked_size
= current
->_raw_size
;
2055 current
->_raw_size
= (current
->_raw_size
+ page_size
-1) & -page_size
;
2058 sofar
+= current
->_raw_size
;
2061 /* make sure that this section is of the right size too */
2063 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
2064 current
->_raw_size
+= sofar
- old_sofar
;
2068 /* Force .lib sections to start at zero. The vma is then
2069 incremented in coff_set_section_contents. This is right for
2071 if (strcmp (current
->name
, _LIB
) == 0)
2072 bfd_set_section_vma (abfd
, current
, 0);
2078 obj_relocbase (abfd
) = sofar
;
2079 abfd
->output_has_begun
= true;
2083 #ifndef RS6000COFF_C
2085 /* If .file, .text, .data, .bss symbols are missing, add them. */
2086 /* @@ Should we only be adding missing symbols, or overriding the aux
2087 values for existing section symbols? */
2089 coff_add_missing_symbols (abfd
)
2092 unsigned int nsyms
= bfd_get_symcount (abfd
);
2093 asymbol
**sympp
= abfd
->outsymbols
;
2096 int need_text
= 1, need_data
= 1, need_bss
= 1, need_file
= 1;
2098 for (i
= 0; i
< nsyms
; i
++)
2100 coff_symbol_type
*csym
= coff_symbol_from (abfd
, sympp
[i
]);
2104 /* only do this if there is a coff representation of the input
2106 if (csym
->native
&& csym
->native
->u
.syment
.n_sclass
== C_FILE
)
2111 name
= csym
->symbol
.name
;
2114 if (!strcmp (name
, _TEXT
))
2117 else if (!strcmp (name
, ".wtext"))
2120 else if (!strcmp (name
, _DATA
))
2122 else if (!strcmp (name
, _BSS
))
2126 /* Now i == bfd_get_symcount (abfd). */
2127 /* @@ For now, don't deal with .file symbol. */
2130 if (!need_text
&& !need_data
&& !need_bss
&& !need_file
)
2132 nsyms
+= need_text
+ need_data
+ need_bss
+ need_file
;
2133 sympp2
= (asymbol
**) bfd_alloc_by_size_t (abfd
, nsyms
* sizeof (asymbol
*));
2136 memcpy (sympp2
, sympp
, i
* sizeof (asymbol
*));
2139 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
2143 sympp2
[i
++] = coff_section_symbol (abfd
, _TEXT
);
2145 sympp2
[i
++] = coff_section_symbol (abfd
, _DATA
);
2147 sympp2
[i
++] = coff_section_symbol (abfd
, _BSS
);
2148 BFD_ASSERT (i
== nsyms
);
2149 bfd_set_symtab (abfd
, sympp2
, nsyms
);
2153 #endif /* ! defined (RS6000COFF_C) */
2160 coff_write_object_contents (abfd
)
2164 boolean hasrelocs
= false;
2165 boolean haslinno
= false;
2167 file_ptr reloc_base
;
2168 file_ptr lineno_base
;
2170 unsigned long reloc_size
= 0;
2171 unsigned long lnno_size
= 0;
2172 asection
*text_sec
= NULL
;
2173 asection
*data_sec
= NULL
;
2174 asection
*bss_sec
= NULL
;
2176 struct internal_filehdr internal_f
;
2177 struct internal_aouthdr internal_a
;
2179 bfd_set_error (bfd_error_system_call
);
2181 /* Make a pass through the symbol table to count line number entries and
2182 put them into the correct asections */
2184 lnno_size
= coff_count_linenumbers (abfd
) * LINESZ
;
2186 if (abfd
->output_has_begun
== false)
2187 coff_compute_section_file_positions (abfd
);
2189 reloc_base
= obj_relocbase (abfd
);
2191 /* Work out the size of the reloc and linno areas */
2193 for (current
= abfd
->sections
; current
!= NULL
; current
=
2195 reloc_size
+= current
->reloc_count
* RELSZ
;
2197 lineno_base
= reloc_base
+ reloc_size
;
2198 sym_base
= lineno_base
+ lnno_size
;
2200 /* Indicate in each section->line_filepos its actual file address */
2201 for (current
= abfd
->sections
; current
!= NULL
; current
=
2204 if (current
->lineno_count
)
2206 current
->line_filepos
= lineno_base
;
2207 current
->moving_line_filepos
= lineno_base
;
2208 lineno_base
+= current
->lineno_count
* LINESZ
;
2212 current
->line_filepos
= 0;
2214 if (current
->reloc_count
)
2216 current
->rel_filepos
= reloc_base
;
2217 reloc_base
+= current
->reloc_count
* RELSZ
;
2221 current
->rel_filepos
= 0;
2225 /* Write section headers to the file. */
2226 internal_f
.f_nscns
= 0;
2228 if ((abfd
->flags
& EXEC_P
) != 0)
2229 scn_base
= FILHSZ
+ AOUTSZ
;
2234 if (xcoff_data (abfd
)->full_aouthdr
)
2237 scn_base
+= SMALL_AOUTSZ
;
2241 if (bfd_seek (abfd
, scn_base
, SEEK_SET
) != 0)
2244 for (current
= abfd
->sections
;
2246 current
= current
->next
)
2248 struct internal_scnhdr section
;
2251 /* Do not include the .junk section. This is where we collect section
2252 data which we don't need. This is mainly the MS .debug$ data which
2253 stores codeview debug data. */
2254 if (strcmp (current
->name
, ".junk") == 0)
2259 /* If we've got a .reloc section, remember. */
2261 #ifdef COFF_IMAGE_WITH_PE
2262 if (strcmp (current
->name
, ".reloc") == 0)
2264 pe_data (abfd
)->has_reloc_section
= 1;
2269 internal_f
.f_nscns
++;
2270 strncpy (&(section
.s_name
[0]), current
->name
, 8);
2272 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
2273 Ian Taylor <ian@cygnus.com>. */
2274 if (strcmp (current
->name
, _LIB
) == 0)
2275 section
.s_vaddr
= 0;
2278 section
.s_vaddr
= current
->vma
;
2279 section
.s_paddr
= current
->lma
;
2280 section
.s_size
= current
->_raw_size
;
2283 section
.s_paddr
= current
->_cooked_size
;
2287 If this section has no size or is unloadable then the scnptr
2290 if (current
->_raw_size
== 0 ||
2291 (current
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
2293 section
.s_scnptr
= 0;
2297 section
.s_scnptr
= current
->filepos
;
2299 section
.s_relptr
= current
->rel_filepos
;
2300 section
.s_lnnoptr
= current
->line_filepos
;
2301 section
.s_nreloc
= current
->reloc_count
;
2302 section
.s_nlnno
= current
->lineno_count
;
2303 if (current
->reloc_count
!= 0)
2305 if (current
->lineno_count
!= 0)
2309 /* Indicate the use of an XCOFF overflow section header. */
2310 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2312 section
.s_nreloc
= 0xffff;
2313 section
.s_nlnno
= 0xffff;
2317 section
.s_flags
= sec_to_styp_flags (current
->name
, current
->flags
);
2319 if (!strcmp (current
->name
, _TEXT
))
2323 else if (!strcmp (current
->name
, _DATA
))
2327 else if (!strcmp (current
->name
, _BSS
))
2333 section
.s_align
= (current
->alignment_power
2334 ? 1 << current
->alignment_power
2339 #ifdef COFF_IMAGE_WITH_PE
2340 /* suppress output of the sections if they are null. ld includes
2341 the bss and data sections even if there is no size assigned
2342 to them. NT loader doesn't like it if these section headers are
2343 included if the sections themselves are not needed */
2344 if (section
.s_size
== 0)
2345 internal_f
.f_nscns
--;
2350 if (coff_swap_scnhdr_out (abfd
, §ion
, &buff
) == 0
2351 || bfd_write ((PTR
) (&buff
), 1, SCNHSZ
, abfd
) != SCNHSZ
)
2357 /* XCOFF handles overflows in the reloc and line number count fields
2358 by creating a new section header to hold the correct values. */
2359 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2361 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2363 struct internal_scnhdr scnhdr
;
2366 internal_f
.f_nscns
++;
2367 strncpy (&(scnhdr
.s_name
[0]), current
->name
, 8);
2368 scnhdr
.s_paddr
= current
->reloc_count
;
2369 scnhdr
.s_vaddr
= current
->lineno_count
;
2371 scnhdr
.s_scnptr
= 0;
2372 scnhdr
.s_relptr
= current
->rel_filepos
;
2373 scnhdr
.s_lnnoptr
= current
->line_filepos
;
2374 scnhdr
.s_nreloc
= current
->target_index
;
2375 scnhdr
.s_nlnno
= current
->target_index
;
2376 scnhdr
.s_flags
= STYP_OVRFLO
;
2377 if (coff_swap_scnhdr_out (abfd
, &scnhdr
, &buff
) == 0
2378 || bfd_write ((PTR
) &buff
, 1, SCNHSZ
, abfd
) != SCNHSZ
)
2384 /* OK, now set up the filehdr... */
2386 /* Don't include the internal abs section in the section count */
2389 We will NOT put a fucking timestamp in the header here. Every time you
2390 put it back, I will come in and take it out again. I'm sorry. This
2391 field does not belong here. We fill it with a 0 so it compares the
2392 same but is not a reasonable time. -- gnu@cygnus.com
2394 internal_f
.f_timdat
= 0;
2396 internal_f
.f_flags
= 0;
2398 if (abfd
->flags
& EXEC_P
)
2399 internal_f
.f_opthdr
= AOUTSZ
;
2402 internal_f
.f_opthdr
= 0;
2404 if (xcoff_data (abfd
)->full_aouthdr
)
2405 internal_f
.f_opthdr
= AOUTSZ
;
2407 internal_f
.f_opthdr
= SMALL_AOUTSZ
;
2412 internal_f
.f_flags
|= F_RELFLG
;
2414 internal_f
.f_flags
|= F_LNNO
;
2415 if (abfd
->flags
& EXEC_P
)
2416 internal_f
.f_flags
|= F_EXEC
;
2418 /* FIXME: this is wrong for PPC_PE! */
2419 if (bfd_little_endian (abfd
))
2420 internal_f
.f_flags
|= F_AR32WR
;
2422 internal_f
.f_flags
|= F_AR32W
;
2425 FIXME, should do something about the other byte orders and
2430 if ((abfd
->flags
& DYNAMIC
) != 0)
2431 internal_f
.f_flags
|= F_SHROBJ
;
2432 if (bfd_get_section_by_name (abfd
, _LOADER
) != NULL
)
2433 internal_f
.f_flags
|= F_DYNLOAD
;
2436 memset (&internal_a
, 0, sizeof internal_a
);
2438 /* Set up architecture-dependent stuff */
2441 unsigned int magic
= 0;
2442 unsigned short flags
= 0;
2443 coff_set_flags (abfd
, &magic
, &flags
);
2444 internal_f
.f_magic
= magic
;
2445 internal_f
.f_flags
|= flags
;
2446 /* ...and the "opt"hdr... */
2449 #ifdef ULTRA3 /* NYU's machine */
2450 /* FIXME: This is a bogus check. I really want to see if there
2451 * is a .shbss or a .shdata section, if so then set the magic
2452 * number to indicate a shared data executable.
2454 if (internal_f
.f_nscns
>= 7)
2455 internal_a
.magic
= SHMAGIC
; /* Shared magic */
2458 internal_a
.magic
= NMAGIC
; /* Assume separate i/d */
2459 #define __A_MAGIC_SET__
2462 /* FIXME: What are the a.out magic numbers for the i860? */
2463 internal_a
.magic
= 0;
2464 #define __A_MAGIC_SET__
2467 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
2468 #define __A_MAGIC_SET__
2471 #define __A_MAGIC_SET__
2472 internal_a
.magic
= PAGEMAGICBCS
;
2476 #define __A_MAGIC_SET__
2477 internal_a
.magic
= APOLLO_COFF_VERSION_NUMBER
;
2480 #if defined(M68) || defined(WE32K) || defined(M68K)
2481 #define __A_MAGIC_SET__
2483 internal_a
.magic
= LYNXCOFFMAGIC
;
2485 #if defined(TARG_AUX)
2486 internal_a
.magic
= (abfd
->flags
& D_PAGED
? PAGEMAGICPEXECPAGED
:
2487 abfd
->flags
& WP_TEXT
? PAGEMAGICPEXECSWAPPED
:
2488 PAGEMAGICEXECSWAPPED
);
2490 #if defined (PAGEMAGICPEXECPAGED)
2491 internal_a
.magic
= PAGEMAGICPEXECPAGED
;
2493 #endif /* TARG_AUX */
2495 #endif /* M68 || WE32K || M68K */
2498 #define __A_MAGIC_SET__
2499 internal_a
.magic
= ZMAGIC
;
2502 #define __A_MAGIC_SET__
2503 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
2506 #define __A_MAGIC_SET__
2508 internal_a
.magic
= LYNXCOFFMAGIC
;
2510 internal_a
.magic
= ZMAGIC
;
2515 #define __A_MAGIC_SET__
2517 internal_a
.magic
= LYNXCOFFMAGIC
;
2522 #define __A_MAGIC_SET__
2523 internal_a
.magic
= (abfd
->flags
& D_PAGED
) ? RS6K_AOUTHDR_ZMAGIC
:
2524 (abfd
->flags
& WP_TEXT
) ? RS6K_AOUTHDR_NMAGIC
:
2525 RS6K_AOUTHDR_OMAGIC
;
2528 #ifndef __A_MAGIC_SET__
2529 #include "Your aouthdr magic number is not being set!"
2531 #undef __A_MAGIC_SET__
2535 /* FIXME: Does anybody ever set this to another value? */
2536 internal_a
.vstamp
= 0;
2538 /* Now should write relocs, strings, syms */
2539 obj_sym_filepos (abfd
) = sym_base
;
2541 if (bfd_get_symcount (abfd
) != 0)
2544 #ifndef RS6000COFF_C
2545 if (!coff_add_missing_symbols (abfd
))
2548 if (!coff_renumber_symbols (abfd
, &firstundef
))
2550 coff_mangle_symbols (abfd
);
2551 if (! coff_write_symbols (abfd
))
2553 if (! coff_write_linenumbers (abfd
))
2555 if (! coff_write_relocs (abfd
, firstundef
))
2558 #ifdef COFF_IMAGE_WITH_PE
2560 else if ((abfd
->flags
& EXEC_P
) != 0)
2564 /* PowerPC PE appears to require that all executable files be
2565 rounded up to the page size. */
2568 BFD_ALIGN (sym_base
, COFF_PAGE_SIZE
) - 1,
2570 || bfd_write (&b
, 1, 1, abfd
) != 1)
2576 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
2577 backend linker, and obj_raw_syment_count is not valid until after
2578 coff_write_symbols is called. */
2579 if (obj_raw_syment_count (abfd
) != 0)
2581 internal_f
.f_symptr
= sym_base
;
2583 /* AIX appears to require that F_RELFLG not be set if there are
2584 local symbols but no relocations. */
2585 internal_f
.f_flags
&=~ F_RELFLG
;
2590 internal_f
.f_symptr
= 0;
2591 internal_f
.f_flags
|= F_LSYMS
;
2596 internal_a
.tsize
= bfd_get_section_size_before_reloc (text_sec
);
2597 internal_a
.text_start
= internal_a
.tsize
? text_sec
->vma
: 0;
2601 internal_a
.dsize
= bfd_get_section_size_before_reloc (data_sec
);
2602 internal_a
.data_start
= internal_a
.dsize
? data_sec
->vma
: 0;
2606 internal_a
.bsize
= bfd_get_section_size_before_reloc (bss_sec
);
2607 if (internal_a
.bsize
&& bss_sec
->vma
< internal_a
.data_start
)
2608 internal_a
.data_start
= bss_sec
->vma
;
2611 internal_a
.entry
= bfd_get_start_address (abfd
);
2612 internal_f
.f_nsyms
= obj_raw_syment_count (abfd
);
2615 if (xcoff_data (abfd
)->full_aouthdr
)
2618 asection
*loader_sec
;
2620 internal_a
.vstamp
= 1;
2622 internal_a
.o_snentry
= xcoff_data (abfd
)->snentry
;
2623 if (internal_a
.o_snentry
== 0)
2624 internal_a
.entry
= (bfd_vma
) -1;
2626 if (text_sec
!= NULL
)
2628 internal_a
.o_sntext
= text_sec
->target_index
;
2629 internal_a
.o_algntext
= bfd_get_section_alignment (abfd
, text_sec
);
2633 internal_a
.o_sntext
= 0;
2634 internal_a
.o_algntext
= 0;
2636 if (data_sec
!= NULL
)
2638 internal_a
.o_sndata
= data_sec
->target_index
;
2639 internal_a
.o_algndata
= bfd_get_section_alignment (abfd
, data_sec
);
2643 internal_a
.o_sndata
= 0;
2644 internal_a
.o_algndata
= 0;
2646 loader_sec
= bfd_get_section_by_name (abfd
, ".loader");
2647 if (loader_sec
!= NULL
)
2648 internal_a
.o_snloader
= loader_sec
->target_index
;
2650 internal_a
.o_snloader
= 0;
2651 if (bss_sec
!= NULL
)
2652 internal_a
.o_snbss
= bss_sec
->target_index
;
2654 internal_a
.o_snbss
= 0;
2656 toc
= xcoff_data (abfd
)->toc
;
2657 internal_a
.o_toc
= toc
;
2658 internal_a
.o_sntoc
= xcoff_data (abfd
)->sntoc
;
2660 internal_a
.o_modtype
= xcoff_data (abfd
)->modtype
;
2661 if (xcoff_data (abfd
)->cputype
!= -1)
2662 internal_a
.o_cputype
= xcoff_data (abfd
)->cputype
;
2665 switch (bfd_get_arch (abfd
))
2667 case bfd_arch_rs6000
:
2668 internal_a
.o_cputype
= 4;
2670 case bfd_arch_powerpc
:
2671 if (bfd_get_mach (abfd
) == 0)
2672 internal_a
.o_cputype
= 3;
2674 internal_a
.o_cputype
= 1;
2680 internal_a
.o_maxstack
= xcoff_data (abfd
)->maxstack
;
2681 internal_a
.o_maxdata
= xcoff_data (abfd
)->maxdata
;
2685 /* now write them */
2686 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
2690 coff_swap_filehdr_out (abfd
, (PTR
) & internal_f
, (PTR
) & buff
);
2691 if (bfd_write ((PTR
) & buff
, 1, FILHSZ
, abfd
) != FILHSZ
)
2694 if (abfd
->flags
& EXEC_P
)
2697 coff_swap_aouthdr_out (abfd
, (PTR
) & internal_a
, (PTR
) & buff
);
2698 if (bfd_write ((PTR
) & buff
, 1, AOUTSZ
, abfd
) != AOUTSZ
)
2707 /* XCOFF seems to always write at least a small a.out header. */
2708 coff_swap_aouthdr_out (abfd
, (PTR
) &internal_a
, (PTR
) &buff
);
2709 if (xcoff_data (abfd
)->full_aouthdr
)
2712 size
= SMALL_AOUTSZ
;
2713 if (bfd_write ((PTR
) &buff
, 1, size
, abfd
) != size
)
2722 coff_set_section_contents (abfd
, section
, location
, offset
, count
)
2727 bfd_size_type count
;
2729 if (abfd
->output_has_begun
== false) /* set by bfd.c handler */
2730 coff_compute_section_file_positions (abfd
);
2734 /* The physical address field of a .lib section is used to hold the
2735 number of shared libraries in the section. This code counts the
2736 number of sections being written, and increments the lma field
2739 I have found no documentation on the contents of this section.
2740 Experimentation indicates that the section contains zero or more
2741 records, each of which has the following structure:
2743 - a (four byte) word holding the length of this record, in words,
2744 - a word that always seems to be set to "2",
2745 - the path to a shared library, null-terminated and then padded
2746 to a whole word boundary.
2748 bfd_assert calls have been added to alert if an attempt is made
2749 to write a section which doesn't follow these assumptions. The
2750 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
2751 <robertl@arnet.com> (Thanks!).
2753 Gvran Uddeborg <gvran@uddeborg.pp.se> */
2755 if (strcmp (section
->name
, _LIB
) == 0)
2757 bfd_byte
*rec
, *recend
;
2759 rec
= (bfd_byte
*) location
;
2760 recend
= rec
+ count
;
2761 while (rec
< recend
)
2764 rec
+= bfd_get_32 (abfd
, rec
) * 4;
2767 BFD_ASSERT (rec
== recend
);
2772 /* Don't write out bss sections - one way to do this is to
2773 see if the filepos has not been set. */
2774 if (section
->filepos
== 0)
2777 if (bfd_seek (abfd
, (file_ptr
) (section
->filepos
+ offset
), SEEK_SET
) != 0)
2782 return (bfd_write (location
, 1, count
, abfd
) == count
) ? true : false;
2788 coff_close_and_cleanup (abfd
)
2791 if (!bfd_read_p (abfd
))
2792 switch (abfd
->format
)
2795 if (!_bfd_write_archive_contents (abfd
))
2799 if (!coff_write_object_contents (abfd
))
2803 bfd_set_error (bfd_error_invalid_operation
);
2807 /* We depend on bfd_close to free all the memory on the obstack. */
2808 /* FIXME if bfd_release is not using obstacks! */
2815 buy_and_read (abfd
, where
, seek_direction
, size
)
2821 PTR area
= (PTR
) bfd_alloc (abfd
, size
);
2824 if (bfd_seek (abfd
, where
, seek_direction
) != 0
2825 || bfd_read (area
, 1, size
, abfd
) != size
)
2828 } /* buy_and_read() */
2834 Creating the linenumber table is done by reading in the entire
2835 coff linenumber table, and creating another table for internal use.
2837 A coff linenumber table is structured so that each function
2838 is marked as having a line number of 0. Each line within the
2839 function is an offset from the first line in the function. The
2840 base of the line number information for the table is stored in
2841 the symbol associated with the function.
2843 The information is copied from the external to the internal
2844 table, and each symbol which marks a function is marked by
2847 How does this work ?
2852 coff_slurp_line_table (abfd
, asect
)
2856 LINENO
*native_lineno
;
2857 alent
*lineno_cache
;
2859 BFD_ASSERT (asect
->lineno
== (alent
*) NULL
);
2861 native_lineno
= (LINENO
*) buy_and_read (abfd
,
2862 asect
->line_filepos
,
2865 asect
->lineno_count
));
2867 (alent
*) bfd_alloc (abfd
, (size_t) ((asect
->lineno_count
+ 1) * sizeof (alent
)));
2868 if (lineno_cache
== NULL
)
2872 unsigned int counter
= 0;
2873 alent
*cache_ptr
= lineno_cache
;
2874 LINENO
*src
= native_lineno
;
2876 while (counter
< asect
->lineno_count
)
2878 struct internal_lineno dst
;
2879 coff_swap_lineno_in (abfd
, src
, &dst
);
2880 cache_ptr
->line_number
= dst
.l_lnno
;
2882 if (cache_ptr
->line_number
== 0)
2884 coff_symbol_type
*sym
=
2885 (coff_symbol_type
*) (dst
.l_addr
.l_symndx
2886 + obj_raw_syments (abfd
))->u
.syment
._n
._n_n
._n_zeroes
;
2887 cache_ptr
->u
.sym
= (asymbol
*) sym
;
2888 if (sym
->lineno
!= NULL
)
2890 (*_bfd_error_handler
)
2891 ("%s: warning: duplicate line number information for `%s'",
2892 bfd_get_filename (abfd
),
2893 bfd_asymbol_name (&sym
->symbol
));
2895 sym
->lineno
= cache_ptr
;
2899 cache_ptr
->u
.offset
= dst
.l_addr
.l_paddr
2900 - bfd_section_vma (abfd
, asect
);
2901 } /* If no linenumber expect a symbol index */
2907 cache_ptr
->line_number
= 0;
2910 asect
->lineno
= lineno_cache
;
2911 /* FIXME, free native_lineno here, or use alloca or something. */
2916 coff_slurp_symbol_table (abfd
)
2919 combined_entry_type
*native_symbols
;
2920 coff_symbol_type
*cached_area
;
2921 unsigned int *table_ptr
;
2923 unsigned int number_of_symbols
= 0;
2925 if (obj_symbols (abfd
))
2928 /* Read in the symbol table */
2929 if ((native_symbols
= coff_get_normalized_symtab (abfd
)) == NULL
)
2934 /* Allocate enough room for all the symbols in cached form */
2935 cached_area
= ((coff_symbol_type
*)
2937 (obj_raw_syment_count (abfd
)
2938 * sizeof (coff_symbol_type
))));
2940 if (cached_area
== NULL
)
2942 table_ptr
= ((unsigned int *)
2944 (obj_raw_syment_count (abfd
)
2945 * sizeof (unsigned int))));
2947 if (table_ptr
== NULL
)
2951 coff_symbol_type
*dst
= cached_area
;
2952 unsigned int last_native_index
= obj_raw_syment_count (abfd
);
2953 unsigned int this_index
= 0;
2954 while (this_index
< last_native_index
)
2956 combined_entry_type
*src
= native_symbols
+ this_index
;
2957 table_ptr
[this_index
] = number_of_symbols
;
2958 dst
->symbol
.the_bfd
= abfd
;
2960 dst
->symbol
.name
= (char *) (src
->u
.syment
._n
._n_n
._n_offset
);
2961 /* We use the native name field to point to the cached field. */
2962 src
->u
.syment
._n
._n_n
._n_zeroes
= (long) dst
;
2963 dst
->symbol
.section
= coff_section_from_bfd_index (abfd
,
2964 src
->u
.syment
.n_scnum
);
2965 dst
->symbol
.flags
= 0;
2966 dst
->done_lineno
= false;
2968 switch (src
->u
.syment
.n_sclass
)
2973 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
2974 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
2975 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
2977 /* Fall through to next case */
2986 /* PE uses storage class 0x68 to denote a section symbol */
2988 /* PE uses storage class 0x67 for a weak external symbol. */
2991 if ((src
->u
.syment
.n_scnum
) == 0)
2993 if ((src
->u
.syment
.n_value
) == 0)
2995 dst
->symbol
.section
= bfd_und_section_ptr
;
2996 dst
->symbol
.value
= 0;
3000 dst
->symbol
.section
= bfd_com_section_ptr
;
3001 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3006 /* Base the value as an index from the base of the
3009 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
3010 dst
->symbol
.value
= (src
->u
.syment
.n_value
3011 - dst
->symbol
.section
->vma
);
3013 if (ISFCN ((src
->u
.syment
.n_type
)))
3015 /* A function ext does not go at the end of a
3017 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
3022 /* A C_HIDEXT symbol is not global. */
3023 if (src
->u
.syment
.n_sclass
== C_HIDEXT
)
3024 dst
->symbol
.flags
= BSF_LOCAL
;
3025 /* A symbol with a csect entry should not go at the end. */
3026 if (src
->u
.syment
.n_numaux
> 0)
3027 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
3031 if (src
->u
.syment
.n_sclass
== C_NT_WEAK
)
3032 dst
->symbol
.flags
= BSF_WEAK
;
3037 case C_STAT
: /* static */
3039 case C_LEAFSTAT
: /* static leaf procedure */
3041 case C_LABEL
: /* label */
3042 if (src
->u
.syment
.n_scnum
== -2)
3043 dst
->symbol
.flags
= BSF_DEBUGGING
;
3045 dst
->symbol
.flags
= BSF_LOCAL
;
3047 Base the value as an index from the base of the section, if
3050 if (dst
->symbol
.section
)
3051 dst
->symbol
.value
= (src
->u
.syment
.n_value
) -
3052 dst
->symbol
.section
->vma
;
3054 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3057 case C_MOS
: /* member of structure */
3058 case C_EOS
: /* end of structure */
3059 #ifdef NOTDEF /* C_AUTOARG has the same value */
3061 case C_GLBLREG
: /* A29k-specific storage class */
3064 case C_REGPARM
: /* register parameter */
3065 case C_REG
: /* register variable */
3067 case C_AUTOARG
: /* 960-specific storage class */
3069 case C_TPDEF
: /* type definition */
3071 case C_AUTO
: /* automatic variable */
3072 case C_FIELD
: /* bit field */
3073 case C_ENTAG
: /* enumeration tag */
3074 case C_MOE
: /* member of enumeration */
3075 case C_MOU
: /* member of union */
3076 case C_UNTAG
: /* union tag */
3077 dst
->symbol
.flags
= BSF_DEBUGGING
;
3078 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3081 case C_FILE
: /* file name */
3082 case C_STRTAG
: /* structure tag */
3097 dst
->symbol
.flags
= BSF_DEBUGGING
;
3098 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3102 case C_BINCL
: /* beginning of include file */
3103 case C_EINCL
: /* ending of include file */
3104 /* The value is actually a pointer into the line numbers
3105 of the file. We locate the line number entry, and
3106 set the section to the section which contains it, and
3107 the value to the index in that section. */
3111 dst
->symbol
.flags
= BSF_DEBUGGING
;
3112 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
3113 if (sec
->line_filepos
<= (file_ptr
) src
->u
.syment
.n_value
3114 && ((file_ptr
) (sec
->line_filepos
3115 + sec
->lineno_count
* LINESZ
)
3116 > (file_ptr
) src
->u
.syment
.n_value
))
3119 dst
->symbol
.value
= 0;
3122 dst
->symbol
.section
= sec
;
3123 dst
->symbol
.value
= ((src
->u
.syment
.n_value
3124 - sec
->line_filepos
)
3132 dst
->symbol
.flags
= BSF_DEBUGGING
;
3134 /* The value is actually a symbol index. Save a pointer
3135 to the symbol instead of the index. FIXME: This
3136 should use a union. */
3137 src
->u
.syment
.n_value
=
3138 (long) (native_symbols
+ src
->u
.syment
.n_value
);
3139 dst
->symbol
.value
= src
->u
.syment
.n_value
;
3144 case C_BLOCK
: /* ".bb" or ".eb" */
3145 case C_FCN
: /* ".bf" or ".ef" */
3146 case C_EFCN
: /* physical end of function */
3147 dst
->symbol
.flags
= BSF_LOCAL
;
3149 Base the value as an index from the base of the section
3151 dst
->symbol
.value
= (src
->u
.syment
.n_value
) - dst
->symbol
.section
->vma
;
3155 case C_EXTDEF
: /* external definition */
3156 case C_ULABEL
: /* undefined label */
3157 case C_USTATIC
: /* undefined static */
3158 #ifndef COFF_WITH_PE
3159 /* C_LINE in regular coff is 0x68. NT has taken over this storage
3160 class to represent a section symbol */
3161 case C_LINE
: /* line # reformatted as symbol table entry */
3162 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
3163 case C_ALIAS
: /* duplicate tag */
3165 case C_HIDDEN
: /* ext symbol in dmert public lib */
3167 (*_bfd_error_handler
)
3168 ("%s: Unrecognized storage class %d for %s symbol `%s'",
3169 bfd_get_filename (abfd
), src
->u
.syment
.n_sclass
,
3170 dst
->symbol
.section
->name
, dst
->symbol
.name
);
3171 dst
->symbol
.flags
= BSF_DEBUGGING
;
3172 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3176 /* BFD_ASSERT(dst->symbol.flags != 0);*/
3180 dst
->symbol
.udata
.i
= 0;
3181 dst
->lineno
= (alent
*) NULL
;
3182 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
3184 number_of_symbols
++;
3185 } /* walk the native symtab */
3186 } /* bfdize the native symtab */
3188 obj_symbols (abfd
) = cached_area
;
3189 obj_raw_syments (abfd
) = native_symbols
;
3191 bfd_get_symcount (abfd
) = number_of_symbols
;
3192 obj_convert (abfd
) = table_ptr
;
3193 /* Slurp the line tables for each section too */
3199 coff_slurp_line_table (abfd
, p
);
3204 } /* coff_slurp_symbol_table() */
3206 /* Check whether a symbol is globally visible. This is used by the
3207 COFF backend linker code in cofflink.c, since a couple of targets
3208 have globally visible symbols which are not class C_EXT. This
3209 function need not handle the case of n_class == C_EXT. */
3211 #undef OTHER_GLOBAL_CLASS
3214 #define OTHER_GLOBAL_CLASS C_LEAFEXT
3218 #define OTHER_GLOBAL_CLASS C_SECTION
3221 #ifdef OTHER_GLOBAL_CLASS
3224 coff_sym_is_global (abfd
, syment
)
3226 struct internal_syment
*syment
;
3228 if (syment
->n_sclass
== OTHER_GLOBAL_CLASS
)
3233 #undef OTHER_GLOBAL_CLASS
3235 #else /* ! defined (OTHER_GLOBAL_CLASS) */
3237 /* sym_is_global should not be defined if it has nothing to do. */
3239 #define coff_sym_is_global 0
3241 #endif /* ! defined (OTHER_GLOBAL_CLASS) */
3247 Coff relocations are easily transformed into the internal BFD form
3250 Reading a coff relocation table is done in the following stages:
3252 o Read the entire coff relocation table into memory.
3254 o Process each relocation in turn; first swap it from the
3255 external to the internal form.
3257 o Turn the symbol referenced in the relocation's symbol index
3258 into a pointer into the canonical symbol table.
3259 This table is the same as the one returned by a call to
3260 @code{bfd_canonicalize_symtab}. The back end will call that
3261 routine and save the result if a canonicalization hasn't been done.
3263 o The reloc index is turned into a pointer to a howto
3264 structure, in a back end specific way. For instance, the 386
3265 and 960 use the @code{r_type} to directly produce an index
3266 into a howto table vector; the 88k subtracts a number from the
3267 @code{r_type} field and creates an addend field.
3273 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
3275 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
3276 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
3277 coffsym = (obj_symbols (abfd) \
3278 + (cache_ptr->sym_ptr_ptr - symbols)); \
3280 coffsym = coff_symbol_from (abfd, ptr); \
3281 if (coffsym != (coff_symbol_type *) NULL \
3282 && coffsym->native->u.syment.n_scnum == 0) \
3283 cache_ptr->addend = 0; \
3284 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
3285 && ptr->section != (asection *) NULL) \
3286 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
3288 cache_ptr->addend = 0; \
3293 coff_slurp_reloc_table (abfd
, asect
, symbols
)
3298 RELOC
*native_relocs
;
3299 arelent
*reloc_cache
;
3304 if (asect
->relocation
)
3306 if (asect
->reloc_count
== 0)
3308 if (asect
->flags
& SEC_CONSTRUCTOR
)
3310 if (!coff_slurp_symbol_table (abfd
))
3313 (RELOC
*) buy_and_read (abfd
,
3317 asect
->reloc_count
));
3318 reloc_cache
= (arelent
*)
3319 bfd_alloc (abfd
, (size_t) (asect
->reloc_count
* sizeof (arelent
)));
3321 if (reloc_cache
== NULL
)
3325 for (idx
= 0; idx
< asect
->reloc_count
; idx
++)
3327 #ifdef RELOC_PROCESSING
3328 struct internal_reloc dst
;
3329 struct external_reloc
*src
;
3331 cache_ptr
= reloc_cache
+ idx
;
3332 src
= native_relocs
+ idx
;
3333 coff_swap_reloc_in (abfd
, src
, &dst
);
3335 RELOC_PROCESSING (cache_ptr
, &dst
, symbols
, abfd
, asect
);
3337 struct internal_reloc dst
;
3339 struct external_reloc
*src
;
3341 cache_ptr
= reloc_cache
+ idx
;
3342 src
= native_relocs
+ idx
;
3344 coff_swap_reloc_in (abfd
, src
, &dst
);
3347 cache_ptr
->address
= dst
.r_vaddr
;
3349 if (dst
.r_symndx
!= -1)
3351 /* @@ Should never be greater than count of symbols! */
3352 if (dst
.r_symndx
>= obj_conv_table_size (abfd
))
3354 cache_ptr
->sym_ptr_ptr
= symbols
+ obj_convert (abfd
)[dst
.r_symndx
];
3355 ptr
= *(cache_ptr
->sym_ptr_ptr
);
3359 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
3363 /* The symbols definitions that we have read in have been
3364 relocated as if their sections started at 0. But the offsets
3365 refering to the symbols in the raw data have not been
3366 modified, so we have to have a negative addend to compensate.
3368 Note that symbols which used to be common must be left alone */
3370 /* Calculate any reloc addend by looking at the symbol */
3371 CALC_ADDEND (abfd
, ptr
, dst
, cache_ptr
);
3373 cache_ptr
->address
-= asect
->vma
;
3374 /* !! cache_ptr->section = (asection *) NULL;*/
3376 /* Fill in the cache_ptr->howto field from dst.r_type */
3377 RTYPE2HOWTO (cache_ptr
, &dst
);
3382 asect
->relocation
= reloc_cache
;
3386 #ifndef coff_rtype_to_howto
3389 /* Get the howto structure for a reloc. This is only used if the file
3390 including this one defines coff_relocate_section to be
3391 _bfd_coff_generic_relocate_section, so it is OK if it does not
3392 always work. It is the responsibility of the including file to
3393 make sure it is reasonable if it is needed. */
3395 static reloc_howto_type
*coff_rtype_to_howto
3396 PARAMS ((bfd
*, asection
*, struct internal_reloc
*,
3397 struct coff_link_hash_entry
*, struct internal_syment
*,
3401 static reloc_howto_type
*
3402 coff_rtype_to_howto (abfd
, sec
, rel
, h
, sym
, addendp
)
3405 struct internal_reloc
*rel
;
3406 struct coff_link_hash_entry
*h
;
3407 struct internal_syment
*sym
;
3412 RTYPE2HOWTO (&genrel
, rel
);
3413 return genrel
.howto
;
3416 #else /* ! defined (RTYPE2HOWTO) */
3418 #define coff_rtype_to_howto NULL
3420 #endif /* ! defined (RTYPE2HOWTO) */
3421 #endif /* ! defined (coff_rtype_to_howto) */
3423 /* This is stupid. This function should be a boolean predicate. */
3425 coff_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
3431 arelent
*tblptr
= section
->relocation
;
3432 unsigned int count
= 0;
3435 if (section
->flags
& SEC_CONSTRUCTOR
)
3437 /* this section has relocs made up by us, they are not in the
3438 file, so take them out of their chain and place them into
3439 the data area provided */
3440 arelent_chain
*chain
= section
->constructor_chain
;
3441 for (count
= 0; count
< section
->reloc_count
; count
++)
3443 *relptr
++ = &chain
->relent
;
3444 chain
= chain
->next
;
3450 if (! coff_slurp_reloc_table (abfd
, section
, symbols
))
3453 tblptr
= section
->relocation
;
3455 for (; count
++ < section
->reloc_count
;)
3456 *relptr
++ = tblptr
++;
3461 return section
->reloc_count
;
3466 coff_sym_filepos (abfd
)
3469 return obj_sym_filepos (abfd
);
3473 #ifndef coff_reloc16_estimate
3474 #define coff_reloc16_estimate dummy_reloc16_estimate
3477 dummy_reloc16_estimate (abfd
, input_section
, reloc
, shrink
, link_info
)
3479 asection
*input_section
;
3481 unsigned int shrink
;
3482 struct bfd_link_info
*link_info
;
3489 #ifndef coff_reloc16_extra_cases
3490 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
3491 /* This works even if abort is not declared in any header file. */
3493 dummy_reloc16_extra_cases (abfd
, link_info
, link_order
, reloc
, data
, src_ptr
,
3496 struct bfd_link_info
*link_info
;
3497 struct bfd_link_order
*link_order
;
3500 unsigned int *src_ptr
;
3501 unsigned int *dst_ptr
;
3507 /* If coff_relocate_section is defined, we can use the optimized COFF
3508 backend linker. Otherwise we must continue to use the old linker. */
3509 #ifdef coff_relocate_section
3510 #ifndef coff_bfd_link_hash_table_create
3511 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
3513 #ifndef coff_bfd_link_add_symbols
3514 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
3516 #ifndef coff_bfd_final_link
3517 #define coff_bfd_final_link _bfd_coff_final_link
3519 #else /* ! defined (coff_relocate_section) */
3520 #define coff_relocate_section NULL
3521 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
3522 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
3523 #define coff_bfd_final_link _bfd_generic_final_link
3524 #endif /* ! defined (coff_relocate_section) */
3525 #define coff_bfd_link_split_section _bfd_generic_link_split_section
3527 #ifndef coff_start_final_link
3528 #define coff_start_final_link NULL
3531 #ifndef coff_adjust_symndx
3532 #define coff_adjust_symndx NULL
3535 #ifndef coff_link_add_one_symbol
3536 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
3539 static CONST bfd_coff_backend_data bfd_coff_std_swap_table
=
3541 coff_swap_aux_in
, coff_swap_sym_in
, coff_swap_lineno_in
,
3542 coff_swap_aux_out
, coff_swap_sym_out
,
3543 coff_swap_lineno_out
, coff_swap_reloc_out
,
3544 coff_swap_filehdr_out
, coff_swap_aouthdr_out
,
3545 coff_swap_scnhdr_out
,
3546 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
,
3547 #ifdef COFF_LONG_FILENAMES
3552 coff_swap_filehdr_in
, coff_swap_aouthdr_in
, coff_swap_scnhdr_in
,
3553 coff_swap_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
3554 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
3555 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
3556 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
3557 coff_sym_is_global
, coff_compute_section_file_positions
,
3558 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
3559 coff_adjust_symndx
, coff_link_add_one_symbol
3562 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
3563 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
3564 #define coff_get_section_contents _bfd_generic_get_section_contents
3566 #ifndef coff_bfd_copy_private_symbol_data
3567 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
3570 #ifndef coff_bfd_copy_private_section_data
3571 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
3574 #ifndef coff_bfd_copy_private_bfd_data
3575 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
3578 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
3579 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
3581 #ifndef coff_bfd_print_private_bfd_data
3582 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
3585 #ifndef coff_bfd_is_local_label
3586 #define coff_bfd_is_local_label bfd_generic_is_local_label
3588 #ifndef coff_read_minisymbols
3589 #define coff_read_minisymbols _bfd_generic_read_minisymbols
3591 #ifndef coff_minisymbol_to_symbol
3592 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
3595 /* The reloc lookup routine must be supplied by each individual COFF
3597 #ifndef coff_bfd_reloc_type_lookup
3598 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
3601 #ifndef coff_bfd_get_relocated_section_contents
3602 #define coff_bfd_get_relocated_section_contents \
3603 bfd_generic_get_relocated_section_contents
3605 #ifndef coff_bfd_relax_section
3606 #define coff_bfd_relax_section bfd_generic_relax_section