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,value,string,cp,coll,hashp)\
848 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
849 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
853 /* See whether the magic number matches. */
856 coff_bad_format_hook (abfd
, filehdr
)
860 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
862 if (BADMAG (*internal_f
))
865 /* if the optional header is NULL or not the correct size then
866 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
867 and Intel 960 readwrite headers (I960WRMAGIC) is that the
868 optional header is of a different size.
870 But the mips keeps extra stuff in it's opthdr, so dont check
874 #if defined(M88) || defined(I960)
875 if (internal_f
->f_opthdr
!= 0 && AOUTSZ
!= internal_f
->f_opthdr
)
883 initialize a section structure with information peculiar to this
884 particular implementation of coff
888 coff_new_section_hook (abfd
, section
)
892 section
->alignment_power
= COFF_DEFAULT_SECTION_ALIGNMENT_POWER
;
895 if (xcoff_data (abfd
)->text_align_power
!= 0
896 && strcmp (bfd_get_section_name (abfd
, section
), ".text") == 0)
897 section
->alignment_power
= xcoff_data (abfd
)->text_align_power
;
898 if (xcoff_data (abfd
)->data_align_power
!= 0
899 && strcmp (bfd_get_section_name (abfd
, section
), ".data") == 0)
900 section
->alignment_power
= xcoff_data (abfd
)->data_align_power
;
903 /* Allocate aux records for section symbols, to store size and
906 @@ Shouldn't use constant multiplier here! */
907 coffsymbol (section
->symbol
)->native
=
908 (combined_entry_type
*) bfd_zalloc (abfd
,
909 sizeof (combined_entry_type
) * 10);
911 /* The .stab section must be aligned to 2**2 at most, because
912 otherwise there may be gaps in the section which gdb will not
913 know how to interpret. Examining the section name is a hack, but
914 that is also how gdb locates the section.
915 We need to handle the .ctors and .dtors sections similarly, to
916 avoid introducing null words in the tables. */
917 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER
> 2
918 && (strncmp (section
->name
, ".stab", 5) == 0
919 || strcmp (section
->name
, ".ctors") == 0
920 || strcmp (section
->name
, ".dtors") == 0))
921 section
->alignment_power
= 2;
923 /* Similarly, the .stabstr section must be aligned to 2**0 at most. */
924 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER
> 0
925 && strncmp (section
->name
, ".stabstr", 8) == 0)
926 section
->alignment_power
= 0;
933 /* Set the alignment of a BFD section. */
936 coff_set_alignment_hook (abfd
, section
, scnhdr
)
941 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
944 for (i
= 0; i
< 32; i
++)
945 if ((1 << i
) >= hdr
->s_align
)
947 section
->alignment_power
= i
;
953 /* a couple of macros to help setting the alignment power field */
954 #define ALIGN_SET(field,x,y) \
955 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
957 section->alignment_power = y;\
960 #define ELIFALIGN_SET(field,x,y) \
961 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
963 section->alignment_power = y;\
967 coff_set_alignment_hook (abfd
, section
, scnhdr
)
972 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
974 ALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_64BYTES
, 6)
975 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_32BYTES
, 5)
976 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_16BYTES
, 4)
977 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_8BYTES
, 3)
978 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_4BYTES
, 2)
979 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_2BYTES
, 1)
980 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_1BYTES
, 0)
983 if (strcmp (section
->name
, ".idata$2") == 0)
985 section
->alignment_power
= 0;
987 else if (strcmp (section
->name
, ".idata$3") == 0)
989 section
->alignment_power
= 0;
991 else if (strcmp (section
->name
, ".idata$4") == 0)
993 section
->alignment_power
= 2;
995 else if (strcmp (section
->name
, ".idata$5") == 0)
997 section
->alignment_power
= 2;
999 else if (strcmp (section
->name
, ".idata$6") == 0)
1001 section
->alignment_power
= 1;
1003 else if (strcmp (section
->name
, ".reloc") == 0)
1005 section
->alignment_power
= 1;
1007 else if (strncmp (section
->name
, ".stab", 5) == 0)
1009 section
->alignment_power
= 2;
1014 #undef ELIFALIGN_SET
1016 #else /* ! COFF_WITH_PE */
1019 /* We grossly abuse this function to handle XCOFF overflow headers.
1020 When we see one, we correct the reloc and line number counts in the
1021 real header, and remove the section we just created. */
1024 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1029 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1033 if ((hdr
->s_flags
& STYP_OVRFLO
) == 0)
1036 real_sec
= coff_section_from_bfd_index (abfd
, hdr
->s_nreloc
);
1037 if (real_sec
== NULL
)
1040 real_sec
->reloc_count
= hdr
->s_paddr
;
1041 real_sec
->lineno_count
= hdr
->s_vaddr
;
1043 for (ps
= &abfd
->sections
; *ps
!= NULL
; ps
= &(*ps
)->next
)
1048 --abfd
->section_count
;
1054 #else /* ! RS6000COFF_C */
1056 #define coff_set_alignment_hook \
1057 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1059 #endif /* ! RS6000COFF_C */
1060 #endif /* ! COFF_WITH_PE */
1063 #ifndef coff_mkobject
1065 coff_mkobject (abfd
)
1068 coff_data_type
*coff
;
1070 abfd
->tdata
.coff_obj_data
= (struct coff_tdata
*) bfd_zalloc (abfd
, sizeof (coff_data_type
));
1071 if (abfd
->tdata
.coff_obj_data
== 0)
1073 coff
= coff_data (abfd
);
1074 coff
->symbols
= (coff_symbol_type
*) NULL
;
1075 coff
->conversion_table
= (unsigned int *) NULL
;
1076 coff
->raw_syments
= (struct coff_ptr_struct
*) NULL
;
1077 coff
->relocbase
= 0;
1078 coff
->local_toc_sym_map
= 0;
1080 /* make_abs_section(abfd);*/
1086 /* Create the COFF backend specific information. */
1087 #ifndef coff_mkobject_hook
1089 coff_mkobject_hook (abfd
, filehdr
, aouthdr
)
1094 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1095 coff_data_type
*coff
;
1097 if (coff_mkobject (abfd
) == false)
1100 coff
= coff_data (abfd
);
1102 coff
->sym_filepos
= internal_f
->f_symptr
;
1104 /* These members communicate important constants about the symbol
1105 table to GDB's symbol-reading code. These `constants'
1106 unfortunately vary among coff implementations... */
1107 coff
->local_n_btmask
= N_BTMASK
;
1108 coff
->local_n_btshft
= N_BTSHFT
;
1109 coff
->local_n_tmask
= N_TMASK
;
1110 coff
->local_n_tshift
= N_TSHIFT
;
1111 coff
->local_symesz
= SYMESZ
;
1112 coff
->local_auxesz
= AUXESZ
;
1113 coff
->local_linesz
= LINESZ
;
1115 obj_raw_syment_count (abfd
) =
1116 obj_conv_table_size (abfd
) =
1117 internal_f
->f_nsyms
;
1120 if ((internal_f
->f_flags
& F_SHROBJ
) != 0)
1121 abfd
->flags
|= DYNAMIC
;
1122 if (aouthdr
!= NULL
&& internal_f
->f_opthdr
>= AOUTSZ
)
1124 struct internal_aouthdr
*internal_a
=
1125 (struct internal_aouthdr
*) aouthdr
;
1126 struct xcoff_tdata
*xcoff
;
1128 xcoff
= xcoff_data (abfd
);
1129 xcoff
->full_aouthdr
= true;
1130 xcoff
->toc
= internal_a
->o_toc
;
1131 xcoff
->sntoc
= internal_a
->o_sntoc
;
1132 xcoff
->snentry
= internal_a
->o_snentry
;
1133 xcoff
->text_align_power
= internal_a
->o_algntext
;
1134 xcoff
->data_align_power
= internal_a
->o_algndata
;
1135 xcoff
->modtype
= internal_a
->o_modtype
;
1136 xcoff
->cputype
= internal_a
->o_cputype
;
1137 xcoff
->maxdata
= internal_a
->o_maxdata
;
1138 xcoff
->maxstack
= internal_a
->o_maxstack
;
1146 /* Determine the machine architecture and type. FIXME: This is target
1147 dependent because the magic numbers are defined in the target
1148 dependent header files. But there is no particular need for this.
1149 If the magic numbers were moved to a separate file, this function
1150 would be target independent and would also be much more successful
1151 at linking together COFF files for different architectures. */
1154 coff_set_arch_mach_hook (abfd
, filehdr
)
1159 enum bfd_architecture arch
;
1160 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1163 switch (internal_f
->f_magic
)
1167 arch
= bfd_arch_powerpc
;
1168 machine
= 0; /* what does this mean? (krk) */
1174 case I386AIXMAGIC
: /* Danbury PS/2 AIX C Compiler */
1175 case LYNXCOFFMAGIC
: /* shadows the m68k Lynx number below, sigh */
1176 arch
= bfd_arch_i386
;
1180 #ifdef A29K_MAGIC_BIG
1181 case A29K_MAGIC_BIG
:
1182 case A29K_MAGIC_LITTLE
:
1183 arch
= bfd_arch_a29k
;
1189 arch
= bfd_arch_arm
;
1196 #ifdef MC68KBCSMAGIC
1199 #ifdef APOLLOM68KMAGIC
1200 case APOLLOM68KMAGIC
:
1202 #ifdef LYNXCOFFMAGIC
1205 arch
= bfd_arch_m68k
;
1213 arch
= bfd_arch_m88k
;
1219 arch
= bfd_arch_z8k
;
1220 switch (internal_f
->f_flags
& F_MACHMASK
)
1223 machine
= bfd_mach_z8001
;
1226 machine
= bfd_mach_z8002
;
1235 arch
= bfd_arch_i860
;
1242 arch
= bfd_arch_i960
;
1243 switch (F_I960TYPE
& internal_f
->f_flags
)
1247 machine
= bfd_mach_i960_core
;
1250 machine
= bfd_mach_i960_kb_sb
;
1253 machine
= bfd_mach_i960_mc
;
1256 machine
= bfd_mach_i960_xa
;
1259 machine
= bfd_mach_i960_ca
;
1262 machine
= bfd_mach_i960_ka_sa
;
1265 machine
= bfd_mach_i960_jx
;
1268 machine
= bfd_mach_i960_hx
;
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 case bfd_mach_i960_jx
:
1752 case bfd_mach_i960_hx
:
1769 case bfd_arch_powerpc
:
1776 *magicp
= I386MAGIC
;
1778 /* Just overwrite the usual value if we're doing Lynx. */
1779 *magicp
= LYNXCOFFMAGIC
;
1786 *magicp
= I860MAGIC
;
1792 #ifdef APOLLOM68KMAGIC
1793 *magicp
= APOLLO_COFF_VERSION_NUMBER
;
1795 *magicp
= MC68MAGIC
;
1798 /* Just overwrite the usual value if we're doing Lynx. */
1799 *magicp
= LYNXCOFFMAGIC
;
1807 *magicp
= MC88OMAGIC
;
1812 case bfd_arch_h8300
:
1813 switch (bfd_get_mach (abfd
))
1815 case bfd_mach_h8300
:
1816 *magicp
= H8300MAGIC
;
1818 case bfd_mach_h8300h
:
1819 *magicp
= H8300HMAGIC
;
1825 #ifdef SH_ARCH_MAGIC_BIG
1827 if (bfd_big_endian (abfd
))
1828 *magicp
= SH_ARCH_MAGIC_BIG
;
1830 *magicp
= SH_ARCH_MAGIC_LITTLE
;
1836 case bfd_arch_sparc
:
1837 *magicp
= SPARCMAGIC
;
1839 /* Just overwrite the usual value if we're doing Lynx. */
1840 *magicp
= LYNXCOFFMAGIC
;
1847 case bfd_arch_h8500
:
1848 *magicp
= H8500MAGIC
;
1852 #ifdef A29K_MAGIC_BIG
1854 if (bfd_big_endian (abfd
))
1855 *magicp
= A29K_MAGIC_BIG
;
1857 *magicp
= A29K_MAGIC_LITTLE
;
1863 case bfd_arch_we32k
:
1864 *magicp
= WE32KMAGIC
;
1870 case bfd_arch_rs6000
:
1872 case bfd_arch_powerpc
:
1874 *magicp
= U802TOCMAGIC
;
1879 default: /* Unknown architecture */
1880 /* return false; -- fall through to "return false" below, to avoid
1881 "statement never reached" errors on the one below. */
1890 coff_set_arch_mach (abfd
, arch
, machine
)
1892 enum bfd_architecture arch
;
1893 unsigned long machine
;
1896 unsigned short dummy2
;
1898 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
1901 if (arch
!= bfd_arch_unknown
&&
1902 coff_set_flags (abfd
, &dummy1
, &dummy2
) != true)
1903 return false; /* We can't represent this type */
1905 return true; /* We're easy ... */
1909 /* Calculate the file position for each section. */
1912 coff_compute_section_file_positions (abfd
)
1916 asection
*previous
= (asection
*) NULL
;
1917 file_ptr sofar
= FILHSZ
;
1925 /* On XCOFF, if we have symbols, set up the .debug section. */
1926 if (bfd_get_symcount (abfd
) > 0)
1929 bfd_size_type i
, symcount
;
1933 symcount
= bfd_get_symcount (abfd
);
1934 for (symp
= abfd
->outsymbols
, i
= 0; i
< symcount
; symp
++, i
++)
1936 coff_symbol_type
*cf
;
1938 cf
= coff_symbol_from (abfd
, *symp
);
1940 && cf
->native
!= NULL
1941 && SYMNAME_IN_DEBUG (&cf
->native
->u
.syment
))
1945 len
= strlen (bfd_asymbol_name (*symp
));
1954 dsec
= bfd_make_section_old_way (abfd
, ".debug");
1957 dsec
->_raw_size
= sz
;
1958 dsec
->flags
|= SEC_HAS_CONTENTS
;
1963 #ifdef COFF_IMAGE_WITH_PE
1965 if (coff_data (abfd
)->link_info
)
1967 page_size
= pe_data (abfd
)->pe_opthdr
.FileAlignment
;
1970 page_size
= PE_DEF_FILE_ALIGNMENT
;
1972 #ifdef COFF_PAGE_SIZE
1973 int page_size
= COFF_PAGE_SIZE
;
1977 if (bfd_get_start_address (abfd
))
1979 /* A start address may have been added to the original file. In this
1980 case it will need an optional header to record it. */
1981 abfd
->flags
|= EXEC_P
;
1984 if (abfd
->flags
& EXEC_P
)
1987 else if (xcoff_data (abfd
)->full_aouthdr
)
1990 sofar
+= SMALL_AOUTSZ
;
1993 sofar
+= abfd
->section_count
* SCNHSZ
;
1996 /* XCOFF handles overflows in the reloc and line number count fields
1997 by allocating a new section header to hold the correct counts. */
1998 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
1999 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2003 for (current
= abfd
->sections
, count
= 1;
2004 current
!= (asection
*) NULL
;
2005 current
= current
->next
, ++count
)
2007 current
->target_index
= count
;
2009 /* Only deal with sections which have contents */
2010 if (!(current
->flags
& SEC_HAS_CONTENTS
))
2014 /* Do not include the .junk section. This is where we collect section
2015 data which we don't need. This is mainly the MS .debug$ data which
2016 stores codeview debug data. */
2017 if (strcmp (current
->name
, ".junk") == 0)
2023 /* Align the sections in the file to the same boundary on
2024 which they are aligned in virtual memory. I960 doesn't
2025 do this (FIXME) so we can stay in sync with Intel. 960
2026 doesn't yet page from files... */
2028 if ((abfd
->flags
& EXEC_P
) != 0)
2030 /* make sure this section is aligned on the right boundary - by
2031 padding the previous section up if necessary */
2034 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
2035 if (previous
!= (asection
*) NULL
)
2037 previous
->_raw_size
+= sofar
- old_sofar
;
2043 /* In demand paged files the low order bits of the file offset
2044 must match the low order bits of the virtual address. */
2045 #ifdef COFF_PAGE_SIZE
2046 if ((abfd
->flags
& D_PAGED
) != 0
2047 && (current
->flags
& SEC_ALLOC
) != 0)
2048 sofar
+= (current
->vma
- sofar
) % page_size
;
2050 current
->filepos
= sofar
;
2052 #ifdef COFF_IMAGE_WITH_PE
2053 /* With PE we have to pad each section to be a multiple of its page size
2054 too, and remember both sizes. Cooked_size becomes very useful. */
2055 current
->_cooked_size
= current
->_raw_size
;
2056 current
->_raw_size
= (current
->_raw_size
+ page_size
-1) & -page_size
;
2059 sofar
+= current
->_raw_size
;
2062 /* make sure that this section is of the right size too */
2064 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
2065 current
->_raw_size
+= sofar
- old_sofar
;
2069 /* Force .lib sections to start at zero. The vma is then
2070 incremented in coff_set_section_contents. This is right for
2072 if (strcmp (current
->name
, _LIB
) == 0)
2073 bfd_set_section_vma (abfd
, current
, 0);
2079 obj_relocbase (abfd
) = sofar
;
2080 abfd
->output_has_begun
= true;
2084 #ifndef RS6000COFF_C
2086 /* If .file, .text, .data, .bss symbols are missing, add them. */
2087 /* @@ Should we only be adding missing symbols, or overriding the aux
2088 values for existing section symbols? */
2090 coff_add_missing_symbols (abfd
)
2093 unsigned int nsyms
= bfd_get_symcount (abfd
);
2094 asymbol
**sympp
= abfd
->outsymbols
;
2097 int need_text
= 1, need_data
= 1, need_bss
= 1, need_file
= 1;
2099 for (i
= 0; i
< nsyms
; i
++)
2101 coff_symbol_type
*csym
= coff_symbol_from (abfd
, sympp
[i
]);
2105 /* only do this if there is a coff representation of the input
2107 if (csym
->native
&& csym
->native
->u
.syment
.n_sclass
== C_FILE
)
2112 name
= csym
->symbol
.name
;
2115 if (!strcmp (name
, _TEXT
))
2118 else if (!strcmp (name
, ".wtext"))
2121 else if (!strcmp (name
, _DATA
))
2123 else if (!strcmp (name
, _BSS
))
2127 /* Now i == bfd_get_symcount (abfd). */
2128 /* @@ For now, don't deal with .file symbol. */
2131 if (!need_text
&& !need_data
&& !need_bss
&& !need_file
)
2133 nsyms
+= need_text
+ need_data
+ need_bss
+ need_file
;
2134 sympp2
= (asymbol
**) bfd_alloc_by_size_t (abfd
, nsyms
* sizeof (asymbol
*));
2137 memcpy (sympp2
, sympp
, i
* sizeof (asymbol
*));
2140 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
2144 sympp2
[i
++] = coff_section_symbol (abfd
, _TEXT
);
2146 sympp2
[i
++] = coff_section_symbol (abfd
, _DATA
);
2148 sympp2
[i
++] = coff_section_symbol (abfd
, _BSS
);
2149 BFD_ASSERT (i
== nsyms
);
2150 bfd_set_symtab (abfd
, sympp2
, nsyms
);
2154 #endif /* ! defined (RS6000COFF_C) */
2161 coff_write_object_contents (abfd
)
2165 boolean hasrelocs
= false;
2166 boolean haslinno
= false;
2168 file_ptr reloc_base
;
2169 file_ptr lineno_base
;
2171 unsigned long reloc_size
= 0;
2172 unsigned long lnno_size
= 0;
2173 asection
*text_sec
= NULL
;
2174 asection
*data_sec
= NULL
;
2175 asection
*bss_sec
= NULL
;
2177 struct internal_filehdr internal_f
;
2178 struct internal_aouthdr internal_a
;
2180 bfd_set_error (bfd_error_system_call
);
2182 /* Make a pass through the symbol table to count line number entries and
2183 put them into the correct asections */
2185 lnno_size
= coff_count_linenumbers (abfd
) * LINESZ
;
2187 if (abfd
->output_has_begun
== false)
2188 coff_compute_section_file_positions (abfd
);
2190 reloc_base
= obj_relocbase (abfd
);
2192 /* Work out the size of the reloc and linno areas */
2194 for (current
= abfd
->sections
; current
!= NULL
; current
=
2196 reloc_size
+= current
->reloc_count
* RELSZ
;
2198 lineno_base
= reloc_base
+ reloc_size
;
2199 sym_base
= lineno_base
+ lnno_size
;
2201 /* Indicate in each section->line_filepos its actual file address */
2202 for (current
= abfd
->sections
; current
!= NULL
; current
=
2205 if (current
->lineno_count
)
2207 current
->line_filepos
= lineno_base
;
2208 current
->moving_line_filepos
= lineno_base
;
2209 lineno_base
+= current
->lineno_count
* LINESZ
;
2213 current
->line_filepos
= 0;
2215 if (current
->reloc_count
)
2217 current
->rel_filepos
= reloc_base
;
2218 reloc_base
+= current
->reloc_count
* RELSZ
;
2222 current
->rel_filepos
= 0;
2226 /* Write section headers to the file. */
2227 internal_f
.f_nscns
= 0;
2229 if ((abfd
->flags
& EXEC_P
) != 0)
2230 scn_base
= FILHSZ
+ AOUTSZ
;
2235 if (xcoff_data (abfd
)->full_aouthdr
)
2238 scn_base
+= SMALL_AOUTSZ
;
2242 if (bfd_seek (abfd
, scn_base
, SEEK_SET
) != 0)
2245 for (current
= abfd
->sections
;
2247 current
= current
->next
)
2249 struct internal_scnhdr section
;
2252 /* Do not include the .junk section. This is where we collect section
2253 data which we don't need. This is mainly the MS .debug$ data which
2254 stores codeview debug data. */
2255 if (strcmp (current
->name
, ".junk") == 0)
2260 /* If we've got a .reloc section, remember. */
2262 #ifdef COFF_IMAGE_WITH_PE
2263 if (strcmp (current
->name
, ".reloc") == 0)
2265 pe_data (abfd
)->has_reloc_section
= 1;
2270 internal_f
.f_nscns
++;
2271 strncpy (&(section
.s_name
[0]), current
->name
, 8);
2273 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
2274 Ian Taylor <ian@cygnus.com>. */
2275 if (strcmp (current
->name
, _LIB
) == 0)
2276 section
.s_vaddr
= 0;
2279 section
.s_vaddr
= current
->vma
;
2280 section
.s_paddr
= current
->lma
;
2281 section
.s_size
= current
->_raw_size
;
2284 section
.s_paddr
= current
->_cooked_size
;
2288 If this section has no size or is unloadable then the scnptr
2291 if (current
->_raw_size
== 0 ||
2292 (current
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
2294 section
.s_scnptr
= 0;
2298 section
.s_scnptr
= current
->filepos
;
2300 section
.s_relptr
= current
->rel_filepos
;
2301 section
.s_lnnoptr
= current
->line_filepos
;
2302 section
.s_nreloc
= current
->reloc_count
;
2303 section
.s_nlnno
= current
->lineno_count
;
2304 if (current
->reloc_count
!= 0)
2306 if (current
->lineno_count
!= 0)
2310 /* Indicate the use of an XCOFF overflow section header. */
2311 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2313 section
.s_nreloc
= 0xffff;
2314 section
.s_nlnno
= 0xffff;
2318 section
.s_flags
= sec_to_styp_flags (current
->name
, current
->flags
);
2320 if (!strcmp (current
->name
, _TEXT
))
2324 else if (!strcmp (current
->name
, _DATA
))
2328 else if (!strcmp (current
->name
, _BSS
))
2334 section
.s_align
= (current
->alignment_power
2335 ? 1 << current
->alignment_power
2340 #ifdef COFF_IMAGE_WITH_PE
2341 /* suppress output of the sections if they are null. ld includes
2342 the bss and data sections even if there is no size assigned
2343 to them. NT loader doesn't like it if these section headers are
2344 included if the sections themselves are not needed */
2345 if (section
.s_size
== 0)
2346 internal_f
.f_nscns
--;
2351 if (coff_swap_scnhdr_out (abfd
, §ion
, &buff
) == 0
2352 || bfd_write ((PTR
) (&buff
), 1, SCNHSZ
, abfd
) != SCNHSZ
)
2358 /* XCOFF handles overflows in the reloc and line number count fields
2359 by creating a new section header to hold the correct values. */
2360 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2362 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2364 struct internal_scnhdr scnhdr
;
2367 internal_f
.f_nscns
++;
2368 strncpy (&(scnhdr
.s_name
[0]), current
->name
, 8);
2369 scnhdr
.s_paddr
= current
->reloc_count
;
2370 scnhdr
.s_vaddr
= current
->lineno_count
;
2372 scnhdr
.s_scnptr
= 0;
2373 scnhdr
.s_relptr
= current
->rel_filepos
;
2374 scnhdr
.s_lnnoptr
= current
->line_filepos
;
2375 scnhdr
.s_nreloc
= current
->target_index
;
2376 scnhdr
.s_nlnno
= current
->target_index
;
2377 scnhdr
.s_flags
= STYP_OVRFLO
;
2378 if (coff_swap_scnhdr_out (abfd
, &scnhdr
, &buff
) == 0
2379 || bfd_write ((PTR
) &buff
, 1, SCNHSZ
, abfd
) != SCNHSZ
)
2385 /* OK, now set up the filehdr... */
2387 /* Don't include the internal abs section in the section count */
2390 We will NOT put a fucking timestamp in the header here. Every time you
2391 put it back, I will come in and take it out again. I'm sorry. This
2392 field does not belong here. We fill it with a 0 so it compares the
2393 same but is not a reasonable time. -- gnu@cygnus.com
2395 internal_f
.f_timdat
= 0;
2397 internal_f
.f_flags
= 0;
2399 if (abfd
->flags
& EXEC_P
)
2400 internal_f
.f_opthdr
= AOUTSZ
;
2403 internal_f
.f_opthdr
= 0;
2405 if (xcoff_data (abfd
)->full_aouthdr
)
2406 internal_f
.f_opthdr
= AOUTSZ
;
2408 internal_f
.f_opthdr
= SMALL_AOUTSZ
;
2413 internal_f
.f_flags
|= F_RELFLG
;
2415 internal_f
.f_flags
|= F_LNNO
;
2416 if (abfd
->flags
& EXEC_P
)
2417 internal_f
.f_flags
|= F_EXEC
;
2419 /* FIXME: this is wrong for PPC_PE! */
2420 if (bfd_little_endian (abfd
))
2421 internal_f
.f_flags
|= F_AR32WR
;
2423 internal_f
.f_flags
|= F_AR32W
;
2426 FIXME, should do something about the other byte orders and
2431 if ((abfd
->flags
& DYNAMIC
) != 0)
2432 internal_f
.f_flags
|= F_SHROBJ
;
2433 if (bfd_get_section_by_name (abfd
, _LOADER
) != NULL
)
2434 internal_f
.f_flags
|= F_DYNLOAD
;
2437 memset (&internal_a
, 0, sizeof internal_a
);
2439 /* Set up architecture-dependent stuff */
2442 unsigned int magic
= 0;
2443 unsigned short flags
= 0;
2444 coff_set_flags (abfd
, &magic
, &flags
);
2445 internal_f
.f_magic
= magic
;
2446 internal_f
.f_flags
|= flags
;
2447 /* ...and the "opt"hdr... */
2450 #ifdef ULTRA3 /* NYU's machine */
2451 /* FIXME: This is a bogus check. I really want to see if there
2452 * is a .shbss or a .shdata section, if so then set the magic
2453 * number to indicate a shared data executable.
2455 if (internal_f
.f_nscns
>= 7)
2456 internal_a
.magic
= SHMAGIC
; /* Shared magic */
2459 internal_a
.magic
= NMAGIC
; /* Assume separate i/d */
2460 #define __A_MAGIC_SET__
2463 /* FIXME: What are the a.out magic numbers for the i860? */
2464 internal_a
.magic
= 0;
2465 #define __A_MAGIC_SET__
2468 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
2469 #define __A_MAGIC_SET__
2472 #define __A_MAGIC_SET__
2473 internal_a
.magic
= PAGEMAGICBCS
;
2477 #define __A_MAGIC_SET__
2478 internal_a
.magic
= APOLLO_COFF_VERSION_NUMBER
;
2481 #if defined(M68) || defined(WE32K) || defined(M68K)
2482 #define __A_MAGIC_SET__
2484 internal_a
.magic
= LYNXCOFFMAGIC
;
2486 #if defined(TARG_AUX)
2487 internal_a
.magic
= (abfd
->flags
& D_PAGED
? PAGEMAGICPEXECPAGED
:
2488 abfd
->flags
& WP_TEXT
? PAGEMAGICPEXECSWAPPED
:
2489 PAGEMAGICEXECSWAPPED
);
2491 #if defined (PAGEMAGICPEXECPAGED)
2492 internal_a
.magic
= PAGEMAGICPEXECPAGED
;
2494 #endif /* TARG_AUX */
2496 #endif /* M68 || WE32K || M68K */
2499 #define __A_MAGIC_SET__
2500 internal_a
.magic
= ZMAGIC
;
2503 #define __A_MAGIC_SET__
2504 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
2507 #define __A_MAGIC_SET__
2509 internal_a
.magic
= LYNXCOFFMAGIC
;
2511 internal_a
.magic
= ZMAGIC
;
2516 #define __A_MAGIC_SET__
2518 internal_a
.magic
= LYNXCOFFMAGIC
;
2523 #define __A_MAGIC_SET__
2524 internal_a
.magic
= (abfd
->flags
& D_PAGED
) ? RS6K_AOUTHDR_ZMAGIC
:
2525 (abfd
->flags
& WP_TEXT
) ? RS6K_AOUTHDR_NMAGIC
:
2526 RS6K_AOUTHDR_OMAGIC
;
2529 #ifndef __A_MAGIC_SET__
2530 #include "Your aouthdr magic number is not being set!"
2532 #undef __A_MAGIC_SET__
2536 /* FIXME: Does anybody ever set this to another value? */
2537 internal_a
.vstamp
= 0;
2539 /* Now should write relocs, strings, syms */
2540 obj_sym_filepos (abfd
) = sym_base
;
2542 if (bfd_get_symcount (abfd
) != 0)
2545 #ifndef RS6000COFF_C
2546 if (!coff_add_missing_symbols (abfd
))
2549 if (!coff_renumber_symbols (abfd
, &firstundef
))
2551 coff_mangle_symbols (abfd
);
2552 if (! coff_write_symbols (abfd
))
2554 if (! coff_write_linenumbers (abfd
))
2556 if (! coff_write_relocs (abfd
, firstundef
))
2559 #ifdef COFF_IMAGE_WITH_PE
2561 else if ((abfd
->flags
& EXEC_P
) != 0)
2565 /* PowerPC PE appears to require that all executable files be
2566 rounded up to the page size. */
2569 BFD_ALIGN (sym_base
, COFF_PAGE_SIZE
) - 1,
2571 || bfd_write (&b
, 1, 1, abfd
) != 1)
2577 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
2578 backend linker, and obj_raw_syment_count is not valid until after
2579 coff_write_symbols is called. */
2580 if (obj_raw_syment_count (abfd
) != 0)
2582 internal_f
.f_symptr
= sym_base
;
2584 /* AIX appears to require that F_RELFLG not be set if there are
2585 local symbols but no relocations. */
2586 internal_f
.f_flags
&=~ F_RELFLG
;
2591 internal_f
.f_symptr
= 0;
2592 internal_f
.f_flags
|= F_LSYMS
;
2597 internal_a
.tsize
= bfd_get_section_size_before_reloc (text_sec
);
2598 internal_a
.text_start
= internal_a
.tsize
? text_sec
->vma
: 0;
2602 internal_a
.dsize
= bfd_get_section_size_before_reloc (data_sec
);
2603 internal_a
.data_start
= internal_a
.dsize
? data_sec
->vma
: 0;
2607 internal_a
.bsize
= bfd_get_section_size_before_reloc (bss_sec
);
2608 if (internal_a
.bsize
&& bss_sec
->vma
< internal_a
.data_start
)
2609 internal_a
.data_start
= bss_sec
->vma
;
2612 internal_a
.entry
= bfd_get_start_address (abfd
);
2613 internal_f
.f_nsyms
= obj_raw_syment_count (abfd
);
2616 if (xcoff_data (abfd
)->full_aouthdr
)
2619 asection
*loader_sec
;
2621 internal_a
.vstamp
= 1;
2623 internal_a
.o_snentry
= xcoff_data (abfd
)->snentry
;
2624 if (internal_a
.o_snentry
== 0)
2625 internal_a
.entry
= (bfd_vma
) -1;
2627 if (text_sec
!= NULL
)
2629 internal_a
.o_sntext
= text_sec
->target_index
;
2630 internal_a
.o_algntext
= bfd_get_section_alignment (abfd
, text_sec
);
2634 internal_a
.o_sntext
= 0;
2635 internal_a
.o_algntext
= 0;
2637 if (data_sec
!= NULL
)
2639 internal_a
.o_sndata
= data_sec
->target_index
;
2640 internal_a
.o_algndata
= bfd_get_section_alignment (abfd
, data_sec
);
2644 internal_a
.o_sndata
= 0;
2645 internal_a
.o_algndata
= 0;
2647 loader_sec
= bfd_get_section_by_name (abfd
, ".loader");
2648 if (loader_sec
!= NULL
)
2649 internal_a
.o_snloader
= loader_sec
->target_index
;
2651 internal_a
.o_snloader
= 0;
2652 if (bss_sec
!= NULL
)
2653 internal_a
.o_snbss
= bss_sec
->target_index
;
2655 internal_a
.o_snbss
= 0;
2657 toc
= xcoff_data (abfd
)->toc
;
2658 internal_a
.o_toc
= toc
;
2659 internal_a
.o_sntoc
= xcoff_data (abfd
)->sntoc
;
2661 internal_a
.o_modtype
= xcoff_data (abfd
)->modtype
;
2662 if (xcoff_data (abfd
)->cputype
!= -1)
2663 internal_a
.o_cputype
= xcoff_data (abfd
)->cputype
;
2666 switch (bfd_get_arch (abfd
))
2668 case bfd_arch_rs6000
:
2669 internal_a
.o_cputype
= 4;
2671 case bfd_arch_powerpc
:
2672 if (bfd_get_mach (abfd
) == 0)
2673 internal_a
.o_cputype
= 3;
2675 internal_a
.o_cputype
= 1;
2681 internal_a
.o_maxstack
= xcoff_data (abfd
)->maxstack
;
2682 internal_a
.o_maxdata
= xcoff_data (abfd
)->maxdata
;
2686 /* now write them */
2687 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
2691 coff_swap_filehdr_out (abfd
, (PTR
) & internal_f
, (PTR
) & buff
);
2692 if (bfd_write ((PTR
) & buff
, 1, FILHSZ
, abfd
) != FILHSZ
)
2695 if (abfd
->flags
& EXEC_P
)
2698 coff_swap_aouthdr_out (abfd
, (PTR
) & internal_a
, (PTR
) & buff
);
2699 if (bfd_write ((PTR
) & buff
, 1, AOUTSZ
, abfd
) != AOUTSZ
)
2708 /* XCOFF seems to always write at least a small a.out header. */
2709 coff_swap_aouthdr_out (abfd
, (PTR
) &internal_a
, (PTR
) &buff
);
2710 if (xcoff_data (abfd
)->full_aouthdr
)
2713 size
= SMALL_AOUTSZ
;
2714 if (bfd_write ((PTR
) &buff
, 1, size
, abfd
) != size
)
2723 coff_set_section_contents (abfd
, section
, location
, offset
, count
)
2728 bfd_size_type count
;
2730 if (abfd
->output_has_begun
== false) /* set by bfd.c handler */
2731 coff_compute_section_file_positions (abfd
);
2735 /* The physical address field of a .lib section is used to hold the
2736 number of shared libraries in the section. This code counts the
2737 number of sections being written, and increments the lma field
2740 I have found no documentation on the contents of this section.
2741 Experimentation indicates that the section contains zero or more
2742 records, each of which has the following structure:
2744 - a (four byte) word holding the length of this record, in words,
2745 - a word that always seems to be set to "2",
2746 - the path to a shared library, null-terminated and then padded
2747 to a whole word boundary.
2749 bfd_assert calls have been added to alert if an attempt is made
2750 to write a section which doesn't follow these assumptions. The
2751 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
2752 <robertl@arnet.com> (Thanks!).
2754 Gvran Uddeborg <gvran@uddeborg.pp.se> */
2756 if (strcmp (section
->name
, _LIB
) == 0)
2758 bfd_byte
*rec
, *recend
;
2760 rec
= (bfd_byte
*) location
;
2761 recend
= rec
+ count
;
2762 while (rec
< recend
)
2765 rec
+= bfd_get_32 (abfd
, rec
) * 4;
2768 BFD_ASSERT (rec
== recend
);
2773 /* Don't write out bss sections - one way to do this is to
2774 see if the filepos has not been set. */
2775 if (section
->filepos
== 0)
2778 if (bfd_seek (abfd
, (file_ptr
) (section
->filepos
+ offset
), SEEK_SET
) != 0)
2783 return (bfd_write (location
, 1, count
, abfd
) == count
) ? true : false;
2789 coff_close_and_cleanup (abfd
)
2792 if (!bfd_read_p (abfd
))
2793 switch (abfd
->format
)
2796 if (!_bfd_write_archive_contents (abfd
))
2800 if (!coff_write_object_contents (abfd
))
2804 bfd_set_error (bfd_error_invalid_operation
);
2808 /* We depend on bfd_close to free all the memory on the obstack. */
2809 /* FIXME if bfd_release is not using obstacks! */
2816 buy_and_read (abfd
, where
, seek_direction
, size
)
2822 PTR area
= (PTR
) bfd_alloc (abfd
, size
);
2825 if (bfd_seek (abfd
, where
, seek_direction
) != 0
2826 || bfd_read (area
, 1, size
, abfd
) != size
)
2829 } /* buy_and_read() */
2835 Creating the linenumber table is done by reading in the entire
2836 coff linenumber table, and creating another table for internal use.
2838 A coff linenumber table is structured so that each function
2839 is marked as having a line number of 0. Each line within the
2840 function is an offset from the first line in the function. The
2841 base of the line number information for the table is stored in
2842 the symbol associated with the function.
2844 The information is copied from the external to the internal
2845 table, and each symbol which marks a function is marked by
2848 How does this work ?
2853 coff_slurp_line_table (abfd
, asect
)
2857 LINENO
*native_lineno
;
2858 alent
*lineno_cache
;
2860 BFD_ASSERT (asect
->lineno
== (alent
*) NULL
);
2862 native_lineno
= (LINENO
*) buy_and_read (abfd
,
2863 asect
->line_filepos
,
2866 asect
->lineno_count
));
2868 (alent
*) bfd_alloc (abfd
, (size_t) ((asect
->lineno_count
+ 1) * sizeof (alent
)));
2869 if (lineno_cache
== NULL
)
2873 unsigned int counter
= 0;
2874 alent
*cache_ptr
= lineno_cache
;
2875 LINENO
*src
= native_lineno
;
2877 while (counter
< asect
->lineno_count
)
2879 struct internal_lineno dst
;
2880 coff_swap_lineno_in (abfd
, src
, &dst
);
2881 cache_ptr
->line_number
= dst
.l_lnno
;
2883 if (cache_ptr
->line_number
== 0)
2885 coff_symbol_type
*sym
=
2886 (coff_symbol_type
*) (dst
.l_addr
.l_symndx
2887 + obj_raw_syments (abfd
))->u
.syment
._n
._n_n
._n_zeroes
;
2888 cache_ptr
->u
.sym
= (asymbol
*) sym
;
2889 if (sym
->lineno
!= NULL
)
2891 (*_bfd_error_handler
)
2892 ("%s: warning: duplicate line number information for `%s'",
2893 bfd_get_filename (abfd
),
2894 bfd_asymbol_name (&sym
->symbol
));
2896 sym
->lineno
= cache_ptr
;
2900 cache_ptr
->u
.offset
= dst
.l_addr
.l_paddr
2901 - bfd_section_vma (abfd
, asect
);
2902 } /* If no linenumber expect a symbol index */
2908 cache_ptr
->line_number
= 0;
2911 asect
->lineno
= lineno_cache
;
2912 /* FIXME, free native_lineno here, or use alloca or something. */
2917 coff_slurp_symbol_table (abfd
)
2920 combined_entry_type
*native_symbols
;
2921 coff_symbol_type
*cached_area
;
2922 unsigned int *table_ptr
;
2924 unsigned int number_of_symbols
= 0;
2926 if (obj_symbols (abfd
))
2929 /* Read in the symbol table */
2930 if ((native_symbols
= coff_get_normalized_symtab (abfd
)) == NULL
)
2935 /* Allocate enough room for all the symbols in cached form */
2936 cached_area
= ((coff_symbol_type
*)
2938 (obj_raw_syment_count (abfd
)
2939 * sizeof (coff_symbol_type
))));
2941 if (cached_area
== NULL
)
2943 table_ptr
= ((unsigned int *)
2945 (obj_raw_syment_count (abfd
)
2946 * sizeof (unsigned int))));
2948 if (table_ptr
== NULL
)
2952 coff_symbol_type
*dst
= cached_area
;
2953 unsigned int last_native_index
= obj_raw_syment_count (abfd
);
2954 unsigned int this_index
= 0;
2955 while (this_index
< last_native_index
)
2957 combined_entry_type
*src
= native_symbols
+ this_index
;
2958 table_ptr
[this_index
] = number_of_symbols
;
2959 dst
->symbol
.the_bfd
= abfd
;
2961 dst
->symbol
.name
= (char *) (src
->u
.syment
._n
._n_n
._n_offset
);
2962 /* We use the native name field to point to the cached field. */
2963 src
->u
.syment
._n
._n_n
._n_zeroes
= (long) dst
;
2964 dst
->symbol
.section
= coff_section_from_bfd_index (abfd
,
2965 src
->u
.syment
.n_scnum
);
2966 dst
->symbol
.flags
= 0;
2967 dst
->done_lineno
= false;
2969 switch (src
->u
.syment
.n_sclass
)
2974 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
2975 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
2976 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
2978 /* Fall through to next case */
2987 /* PE uses storage class 0x68 to denote a section symbol */
2989 /* PE uses storage class 0x67 for a weak external symbol. */
2992 if ((src
->u
.syment
.n_scnum
) == 0)
2994 if ((src
->u
.syment
.n_value
) == 0)
2996 dst
->symbol
.section
= bfd_und_section_ptr
;
2997 dst
->symbol
.value
= 0;
3001 dst
->symbol
.section
= bfd_com_section_ptr
;
3002 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3007 /* Base the value as an index from the base of the
3010 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
3011 dst
->symbol
.value
= (src
->u
.syment
.n_value
3012 - dst
->symbol
.section
->vma
);
3014 if (ISFCN ((src
->u
.syment
.n_type
)))
3016 /* A function ext does not go at the end of a
3018 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
3023 /* A C_HIDEXT symbol is not global. */
3024 if (src
->u
.syment
.n_sclass
== C_HIDEXT
)
3025 dst
->symbol
.flags
= BSF_LOCAL
;
3026 /* A symbol with a csect entry should not go at the end. */
3027 if (src
->u
.syment
.n_numaux
> 0)
3028 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
3032 if (src
->u
.syment
.n_sclass
== C_NT_WEAK
)
3033 dst
->symbol
.flags
= BSF_WEAK
;
3038 case C_STAT
: /* static */
3040 case C_LEAFSTAT
: /* static leaf procedure */
3042 case C_LABEL
: /* label */
3043 if (src
->u
.syment
.n_scnum
== -2)
3044 dst
->symbol
.flags
= BSF_DEBUGGING
;
3046 dst
->symbol
.flags
= BSF_LOCAL
;
3048 Base the value as an index from the base of the section, if
3051 if (dst
->symbol
.section
)
3052 dst
->symbol
.value
= (src
->u
.syment
.n_value
) -
3053 dst
->symbol
.section
->vma
;
3055 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3058 case C_MOS
: /* member of structure */
3059 case C_EOS
: /* end of structure */
3060 #ifdef NOTDEF /* C_AUTOARG has the same value */
3062 case C_GLBLREG
: /* A29k-specific storage class */
3065 case C_REGPARM
: /* register parameter */
3066 case C_REG
: /* register variable */
3068 case C_AUTOARG
: /* 960-specific storage class */
3070 case C_TPDEF
: /* type definition */
3072 case C_AUTO
: /* automatic variable */
3073 case C_FIELD
: /* bit field */
3074 case C_ENTAG
: /* enumeration tag */
3075 case C_MOE
: /* member of enumeration */
3076 case C_MOU
: /* member of union */
3077 case C_UNTAG
: /* union tag */
3078 dst
->symbol
.flags
= BSF_DEBUGGING
;
3079 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3082 case C_FILE
: /* file name */
3083 case C_STRTAG
: /* structure tag */
3098 dst
->symbol
.flags
= BSF_DEBUGGING
;
3099 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3103 case C_BINCL
: /* beginning of include file */
3104 case C_EINCL
: /* ending of include file */
3105 /* The value is actually a pointer into the line numbers
3106 of the file. We locate the line number entry, and
3107 set the section to the section which contains it, and
3108 the value to the index in that section. */
3112 dst
->symbol
.flags
= BSF_DEBUGGING
;
3113 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
3114 if (sec
->line_filepos
<= (file_ptr
) src
->u
.syment
.n_value
3115 && ((file_ptr
) (sec
->line_filepos
3116 + sec
->lineno_count
* LINESZ
)
3117 > (file_ptr
) src
->u
.syment
.n_value
))
3120 dst
->symbol
.value
= 0;
3123 dst
->symbol
.section
= sec
;
3124 dst
->symbol
.value
= ((src
->u
.syment
.n_value
3125 - sec
->line_filepos
)
3133 dst
->symbol
.flags
= BSF_DEBUGGING
;
3135 /* The value is actually a symbol index. Save a pointer
3136 to the symbol instead of the index. FIXME: This
3137 should use a union. */
3138 src
->u
.syment
.n_value
=
3139 (long) (native_symbols
+ src
->u
.syment
.n_value
);
3140 dst
->symbol
.value
= src
->u
.syment
.n_value
;
3145 case C_BLOCK
: /* ".bb" or ".eb" */
3146 case C_FCN
: /* ".bf" or ".ef" */
3147 case C_EFCN
: /* physical end of function */
3148 dst
->symbol
.flags
= BSF_LOCAL
;
3150 Base the value as an index from the base of the section
3152 dst
->symbol
.value
= (src
->u
.syment
.n_value
) - dst
->symbol
.section
->vma
;
3156 case C_EXTDEF
: /* external definition */
3157 case C_ULABEL
: /* undefined label */
3158 case C_USTATIC
: /* undefined static */
3159 #ifndef COFF_WITH_PE
3160 /* C_LINE in regular coff is 0x68. NT has taken over this storage
3161 class to represent a section symbol */
3162 case C_LINE
: /* line # reformatted as symbol table entry */
3163 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
3164 case C_ALIAS
: /* duplicate tag */
3166 case C_HIDDEN
: /* ext symbol in dmert public lib */
3168 (*_bfd_error_handler
)
3169 ("%s: Unrecognized storage class %d for %s symbol `%s'",
3170 bfd_get_filename (abfd
), src
->u
.syment
.n_sclass
,
3171 dst
->symbol
.section
->name
, dst
->symbol
.name
);
3172 dst
->symbol
.flags
= BSF_DEBUGGING
;
3173 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3177 /* BFD_ASSERT(dst->symbol.flags != 0);*/
3181 dst
->symbol
.udata
.i
= 0;
3182 dst
->lineno
= (alent
*) NULL
;
3183 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
3185 number_of_symbols
++;
3186 } /* walk the native symtab */
3187 } /* bfdize the native symtab */
3189 obj_symbols (abfd
) = cached_area
;
3190 obj_raw_syments (abfd
) = native_symbols
;
3192 bfd_get_symcount (abfd
) = number_of_symbols
;
3193 obj_convert (abfd
) = table_ptr
;
3194 /* Slurp the line tables for each section too */
3200 coff_slurp_line_table (abfd
, p
);
3205 } /* coff_slurp_symbol_table() */
3207 /* Check whether a symbol is globally visible. This is used by the
3208 COFF backend linker code in cofflink.c, since a couple of targets
3209 have globally visible symbols which are not class C_EXT. This
3210 function need not handle the case of n_class == C_EXT. */
3212 #undef OTHER_GLOBAL_CLASS
3215 #define OTHER_GLOBAL_CLASS C_LEAFEXT
3219 #define OTHER_GLOBAL_CLASS C_SECTION
3222 #ifdef OTHER_GLOBAL_CLASS
3225 coff_sym_is_global (abfd
, syment
)
3227 struct internal_syment
*syment
;
3229 if (syment
->n_sclass
== OTHER_GLOBAL_CLASS
)
3234 #undef OTHER_GLOBAL_CLASS
3236 #else /* ! defined (OTHER_GLOBAL_CLASS) */
3238 /* sym_is_global should not be defined if it has nothing to do. */
3240 #define coff_sym_is_global 0
3242 #endif /* ! defined (OTHER_GLOBAL_CLASS) */
3248 Coff relocations are easily transformed into the internal BFD form
3251 Reading a coff relocation table is done in the following stages:
3253 o Read the entire coff relocation table into memory.
3255 o Process each relocation in turn; first swap it from the
3256 external to the internal form.
3258 o Turn the symbol referenced in the relocation's symbol index
3259 into a pointer into the canonical symbol table.
3260 This table is the same as the one returned by a call to
3261 @code{bfd_canonicalize_symtab}. The back end will call that
3262 routine and save the result if a canonicalization hasn't been done.
3264 o The reloc index is turned into a pointer to a howto
3265 structure, in a back end specific way. For instance, the 386
3266 and 960 use the @code{r_type} to directly produce an index
3267 into a howto table vector; the 88k subtracts a number from the
3268 @code{r_type} field and creates an addend field.
3274 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
3276 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
3277 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
3278 coffsym = (obj_symbols (abfd) \
3279 + (cache_ptr->sym_ptr_ptr - symbols)); \
3281 coffsym = coff_symbol_from (abfd, ptr); \
3282 if (coffsym != (coff_symbol_type *) NULL \
3283 && coffsym->native->u.syment.n_scnum == 0) \
3284 cache_ptr->addend = 0; \
3285 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
3286 && ptr->section != (asection *) NULL) \
3287 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
3289 cache_ptr->addend = 0; \
3294 coff_slurp_reloc_table (abfd
, asect
, symbols
)
3299 RELOC
*native_relocs
;
3300 arelent
*reloc_cache
;
3305 if (asect
->relocation
)
3307 if (asect
->reloc_count
== 0)
3309 if (asect
->flags
& SEC_CONSTRUCTOR
)
3311 if (!coff_slurp_symbol_table (abfd
))
3314 (RELOC
*) buy_and_read (abfd
,
3318 asect
->reloc_count
));
3319 reloc_cache
= (arelent
*)
3320 bfd_alloc (abfd
, (size_t) (asect
->reloc_count
* sizeof (arelent
)));
3322 if (reloc_cache
== NULL
)
3326 for (idx
= 0; idx
< asect
->reloc_count
; idx
++)
3328 #ifdef RELOC_PROCESSING
3329 struct internal_reloc dst
;
3330 struct external_reloc
*src
;
3332 cache_ptr
= reloc_cache
+ idx
;
3333 src
= native_relocs
+ idx
;
3334 coff_swap_reloc_in (abfd
, src
, &dst
);
3336 RELOC_PROCESSING (cache_ptr
, &dst
, symbols
, abfd
, asect
);
3338 struct internal_reloc dst
;
3340 struct external_reloc
*src
;
3342 cache_ptr
= reloc_cache
+ idx
;
3343 src
= native_relocs
+ idx
;
3345 coff_swap_reloc_in (abfd
, src
, &dst
);
3348 cache_ptr
->address
= dst
.r_vaddr
;
3350 if (dst
.r_symndx
!= -1)
3352 /* @@ Should never be greater than count of symbols! */
3353 if (dst
.r_symndx
>= obj_conv_table_size (abfd
))
3355 cache_ptr
->sym_ptr_ptr
= symbols
+ obj_convert (abfd
)[dst
.r_symndx
];
3356 ptr
= *(cache_ptr
->sym_ptr_ptr
);
3360 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
3364 /* The symbols definitions that we have read in have been
3365 relocated as if their sections started at 0. But the offsets
3366 refering to the symbols in the raw data have not been
3367 modified, so we have to have a negative addend to compensate.
3369 Note that symbols which used to be common must be left alone */
3371 /* Calculate any reloc addend by looking at the symbol */
3372 CALC_ADDEND (abfd
, ptr
, dst
, cache_ptr
);
3374 cache_ptr
->address
-= asect
->vma
;
3375 /* !! cache_ptr->section = (asection *) NULL;*/
3377 /* Fill in the cache_ptr->howto field from dst.r_type */
3378 RTYPE2HOWTO (cache_ptr
, &dst
);
3383 asect
->relocation
= reloc_cache
;
3387 #ifndef coff_rtype_to_howto
3390 /* Get the howto structure for a reloc. This is only used if the file
3391 including this one defines coff_relocate_section to be
3392 _bfd_coff_generic_relocate_section, so it is OK if it does not
3393 always work. It is the responsibility of the including file to
3394 make sure it is reasonable if it is needed. */
3396 static reloc_howto_type
*coff_rtype_to_howto
3397 PARAMS ((bfd
*, asection
*, struct internal_reloc
*,
3398 struct coff_link_hash_entry
*, struct internal_syment
*,
3402 static reloc_howto_type
*
3403 coff_rtype_to_howto (abfd
, sec
, rel
, h
, sym
, addendp
)
3406 struct internal_reloc
*rel
;
3407 struct coff_link_hash_entry
*h
;
3408 struct internal_syment
*sym
;
3413 RTYPE2HOWTO (&genrel
, rel
);
3414 return genrel
.howto
;
3417 #else /* ! defined (RTYPE2HOWTO) */
3419 #define coff_rtype_to_howto NULL
3421 #endif /* ! defined (RTYPE2HOWTO) */
3422 #endif /* ! defined (coff_rtype_to_howto) */
3424 /* This is stupid. This function should be a boolean predicate. */
3426 coff_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
3432 arelent
*tblptr
= section
->relocation
;
3433 unsigned int count
= 0;
3436 if (section
->flags
& SEC_CONSTRUCTOR
)
3438 /* this section has relocs made up by us, they are not in the
3439 file, so take them out of their chain and place them into
3440 the data area provided */
3441 arelent_chain
*chain
= section
->constructor_chain
;
3442 for (count
= 0; count
< section
->reloc_count
; count
++)
3444 *relptr
++ = &chain
->relent
;
3445 chain
= chain
->next
;
3451 if (! coff_slurp_reloc_table (abfd
, section
, symbols
))
3454 tblptr
= section
->relocation
;
3456 for (; count
++ < section
->reloc_count
;)
3457 *relptr
++ = tblptr
++;
3462 return section
->reloc_count
;
3467 coff_sym_filepos (abfd
)
3470 return obj_sym_filepos (abfd
);
3474 #ifndef coff_reloc16_estimate
3475 #define coff_reloc16_estimate dummy_reloc16_estimate
3478 dummy_reloc16_estimate (abfd
, input_section
, reloc
, shrink
, link_info
)
3480 asection
*input_section
;
3482 unsigned int shrink
;
3483 struct bfd_link_info
*link_info
;
3490 #ifndef coff_reloc16_extra_cases
3491 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
3492 /* This works even if abort is not declared in any header file. */
3494 dummy_reloc16_extra_cases (abfd
, link_info
, link_order
, reloc
, data
, src_ptr
,
3497 struct bfd_link_info
*link_info
;
3498 struct bfd_link_order
*link_order
;
3501 unsigned int *src_ptr
;
3502 unsigned int *dst_ptr
;
3508 /* If coff_relocate_section is defined, we can use the optimized COFF
3509 backend linker. Otherwise we must continue to use the old linker. */
3510 #ifdef coff_relocate_section
3511 #ifndef coff_bfd_link_hash_table_create
3512 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
3514 #ifndef coff_bfd_link_add_symbols
3515 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
3517 #ifndef coff_bfd_final_link
3518 #define coff_bfd_final_link _bfd_coff_final_link
3520 #else /* ! defined (coff_relocate_section) */
3521 #define coff_relocate_section NULL
3522 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
3523 #ifndef coff_bfd_link_add_symbols
3524 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
3526 #define coff_bfd_final_link _bfd_generic_final_link
3527 #endif /* ! defined (coff_relocate_section) */
3528 #define coff_bfd_link_split_section _bfd_generic_link_split_section
3530 #ifndef coff_start_final_link
3531 #define coff_start_final_link NULL
3534 #ifndef coff_adjust_symndx
3535 #define coff_adjust_symndx NULL
3538 #ifndef coff_link_add_one_symbol
3539 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
3542 static CONST bfd_coff_backend_data bfd_coff_std_swap_table
=
3544 coff_swap_aux_in
, coff_swap_sym_in
, coff_swap_lineno_in
,
3545 coff_swap_aux_out
, coff_swap_sym_out
,
3546 coff_swap_lineno_out
, coff_swap_reloc_out
,
3547 coff_swap_filehdr_out
, coff_swap_aouthdr_out
,
3548 coff_swap_scnhdr_out
,
3549 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
,
3550 #ifdef COFF_LONG_FILENAMES
3555 coff_swap_filehdr_in
, coff_swap_aouthdr_in
, coff_swap_scnhdr_in
,
3556 coff_swap_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
3557 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
3558 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
3559 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
3560 coff_sym_is_global
, coff_compute_section_file_positions
,
3561 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
3562 coff_adjust_symndx
, coff_link_add_one_symbol
3565 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
3566 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
3567 #define coff_get_section_contents _bfd_generic_get_section_contents
3569 #ifndef coff_bfd_copy_private_symbol_data
3570 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
3573 #ifndef coff_bfd_copy_private_section_data
3574 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
3577 #ifndef coff_bfd_copy_private_bfd_data
3578 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
3581 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
3582 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
3584 #ifndef coff_bfd_print_private_bfd_data
3585 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
3588 #ifndef coff_bfd_is_local_label
3589 #define coff_bfd_is_local_label bfd_generic_is_local_label
3591 #ifndef coff_read_minisymbols
3592 #define coff_read_minisymbols _bfd_generic_read_minisymbols
3594 #ifndef coff_minisymbol_to_symbol
3595 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
3598 /* The reloc lookup routine must be supplied by each individual COFF
3600 #ifndef coff_bfd_reloc_type_lookup
3601 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
3604 #ifndef coff_bfd_get_relocated_section_contents
3605 #define coff_bfd_get_relocated_section_contents \
3606 bfd_generic_get_relocated_section_contents
3608 #ifndef coff_bfd_relax_section
3609 #define coff_bfd_relax_section bfd_generic_relax_section