1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright 1990, 91, 92, 93, 94, 1995 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
22 Most of this hacked by Steve Chamberlain,
30 BFD supports a number of different flavours of coff format.
31 The major differences between formats are the sizes and
32 alignments of fields in structures on disk, and the occasional
35 Coff in all its varieties is implemented with a few common
36 files and a number of implementation specific files. For
37 example, The 88k bcs coff format is implemented in the file
38 @file{coff-m88k.c}. This file @code{#include}s
39 @file{coff/m88k.h} which defines the external structure of the
40 coff format for the 88k, and @file{coff/internal.h} which
41 defines the internal structure. @file{coff-m88k.c} also
42 defines the relocations used by the 88k format
45 The Intel i960 processor version of coff is implemented in
46 @file{coff-i960.c}. This file has the same structure as
47 @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
48 rather than @file{coff-m88k.h}.
51 Porting to a new version of coff
53 The recommended method is to select from the existing
54 implementations the version of coff which is most like the one
55 you want to use. For example, we'll say that i386 coff is
56 the one you select, and that your coff flavour is called foo.
57 Copy @file{i386coff.c} to @file{foocoff.c}, copy
58 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
59 and add the lines to @file{targets.c} and @file{Makefile.in}
60 so that your new back end is used. Alter the shapes of the
61 structures in @file{../include/coff/foo.h} so that they match
62 what you need. You will probably also have to add
63 @code{#ifdef}s to the code in @file{coff/internal.h} and
64 @file{coffcode.h} if your version of coff is too wild.
66 You can verify that your new BFD backend works quite simply by
67 building @file{objdump} from the @file{binutils} directory,
68 and making sure that its version of what's going on and your
69 host system's idea (assuming it has the pretty standard coff
70 dump utility, usually called @code{att-dump} or just
71 @code{dump}) are the same. Then clean up your code, and send
72 what you've done to Cygnus. Then your stuff will be in the
73 next release, and you won't have to keep integrating it.
76 How the coff backend works
81 The Coff backend is split into generic routines that are
82 applicable to any Coff target and routines that are specific
83 to a particular target. The target-specific routines are
84 further split into ones which are basically the same for all
85 Coff targets except that they use the external symbol format
86 or use different values for certain constants.
88 The generic routines are in @file{coffgen.c}. These routines
89 work for any Coff target. They use some hooks into the target
90 specific code; the hooks are in a @code{bfd_coff_backend_data}
91 structure, one of which exists for each target.
93 The essentially similar target-specific routines are in
94 @file{coffcode.h}. This header file includes executable C code.
95 The various Coff targets first include the appropriate Coff
96 header file, make any special defines that are needed, and
97 then include @file{coffcode.h}.
99 Some of the Coff targets then also have additional routines in
100 the target source file itself.
102 For example, @file{coff-i960.c} includes
103 @file{coff/internal.h} and @file{coff/i960.h}. It then
104 defines a few constants, such as @code{I960}, and includes
105 @file{coffcode.h}. Since the i960 has complex relocation
106 types, @file{coff-i960.c} also includes some code to
107 manipulate the i960 relocs. This code is not in
108 @file{coffcode.h} because it would not be used by any other
114 Each flavour of coff supported in BFD has its own header file
115 describing the external layout of the structures. There is also
116 an internal description of the coff layout, in
117 @file{coff/internal.h}. A major function of the
118 coff backend is swapping the bytes and twiddling the bits to
119 translate the external form of the structures into the normal
120 internal form. This is all performed in the
121 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
122 elements are different sizes between different versions of
123 coff; it is the duty of the coff version specific include file
124 to override the definitions of various packing routines in
125 @file{coffcode.h}. E.g., the size of line number entry in coff is
126 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
127 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
128 correct one. No doubt, some day someone will find a version of
129 coff which has a varying field size not catered to at the
130 moment. To port BFD, that person will have to add more @code{#defines}.
131 Three of the bit twiddling routines are exported to
132 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
133 and @code{coff_swap_linno_in}. @code{GDB} reads the symbol
134 table on its own, but uses BFD to fix things up. More of the
135 bit twiddlers are exported for @code{gas};
136 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
137 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
138 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
139 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
140 of all the symbol table and reloc drudgery itself, thereby
141 saving the internal BFD overhead, but uses BFD to swap things
142 on the way out, making cross ports much safer. Doing so also
143 allows BFD (and thus the linker) to use the same header files
144 as @code{gas}, which makes one avenue to disaster disappear.
149 The simple canonical form for symbols used by BFD is not rich
150 enough to keep all the information available in a coff symbol
151 table. The back end gets around this problem by keeping the original
152 symbol table around, "behind the scenes".
154 When a symbol table is requested (through a call to
155 @code{bfd_canonicalize_symtab}), a request gets through to
156 @code{coff_get_normalized_symtab}. This reads the symbol table from
157 the coff file and swaps all the structures inside into the
158 internal form. It also fixes up all the pointers in the table
159 (represented in the file by offsets from the first symbol in
160 the table) into physical pointers to elements in the new
161 internal table. This involves some work since the meanings of
162 fields change depending upon context: a field that is a
163 pointer to another structure in the symbol table at one moment
164 may be the size in bytes of a structure at the next. Another
165 pass is made over the table. All symbols which mark file names
166 (<<C_FILE>> symbols) are modified so that the internal
167 string points to the value in the auxent (the real filename)
168 rather than the normal text associated with the symbol
171 At this time the symbol names are moved around. Coff stores
172 all symbols less than nine characters long physically
173 within the symbol table; longer strings are kept at the end of
174 the file in the string table. This pass moves all strings
175 into memory and replaces them with pointers to the strings.
178 The symbol table is massaged once again, this time to create
179 the canonical table used by the BFD application. Each symbol
180 is inspected in turn, and a decision made (using the
181 @code{sclass} field) about the various flags to set in the
182 @code{asymbol}. @xref{Symbols}. The generated canonical table
183 shares strings with the hidden internal symbol table.
185 Any linenumbers are read from the coff file too, and attached
186 to the symbols which own the functions the linenumbers belong to.
191 Writing a symbol to a coff file which didn't come from a coff
192 file will lose any debugging information. The @code{asymbol}
193 structure remembers the BFD from which the symbol was taken, and on
194 output the back end makes sure that the same destination target as
195 source target is present.
197 When the symbols have come from a coff file then all the
198 debugging information is preserved.
200 Symbol tables are provided for writing to the back end in a
201 vector of pointers to pointers. This allows applications like
202 the linker to accumulate and output large symbol tables
203 without having to do too much byte copying.
205 This function runs through the provided symbol table and
206 patches each symbol marked as a file place holder
207 (@code{C_FILE}) to point to the next file place holder in the
208 list. It also marks each @code{offset} field in the list with
209 the offset from the first symbol of the current symbol.
211 Another function of this procedure is to turn the canonical
212 value form of BFD into the form used by coff. Internally, BFD
213 expects symbol values to be offsets from a section base; so a
214 symbol physically at 0x120, but in a section starting at
215 0x100, would have the value 0x20. Coff expects symbols to
216 contain their final value, so symbols have their values
217 changed at this point to reflect their sum with their owning
218 section. This transformation uses the
219 <<output_section>> field of the @code{asymbol}'s
220 @code{asection} @xref{Sections}.
222 o <<coff_mangle_symbols>>
224 This routine runs though the provided symbol table and uses
225 the offsets generated by the previous pass and the pointers
226 generated when the symbol table was read in to create the
227 structured hierachy required by coff. It changes each pointer
228 to a symbol into the index into the symbol table of the asymbol.
230 o <<coff_write_symbols>>
232 This routine runs through the symbol table and patches up the
233 symbols from their internal form into the coff way, calls the
234 bit twiddlers, and writes out the table to the file.
243 The hidden information for an <<asymbol>> is described in a
244 <<combined_entry_type>>:
248 .typedef struct coff_ptr_struct
251 . {* Remembers the offset from the first symbol in the file for
252 . this symbol. Generated by coff_renumber_symbols. *}
253 .unsigned int offset;
255 . {* Should the value of this symbol be renumbered. Used for
256 . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
257 .unsigned int fix_value : 1;
259 . {* Should the tag field of this symbol be renumbered.
260 . Created by coff_pointerize_aux. *}
261 .unsigned int fix_tag : 1;
263 . {* Should the endidx field of this symbol be renumbered.
264 . Created by coff_pointerize_aux. *}
265 .unsigned int fix_end : 1;
267 . {* Should the x_csect.x_scnlen field be renumbered.
268 . Created by coff_slurp_symbol_table. *}
269 .unsigned int fix_scnlen : 1;
271 . {* The container for the symbol structure as read and translated
275 . union internal_auxent auxent;
276 . struct internal_syment syment;
278 .} combined_entry_type;
281 .{* Each canonical asymbol really looks like this: *}
283 .typedef struct coff_symbol_struct
285 . {* The actual symbol which the rest of BFD works with *}
288 . {* A pointer to the hidden information for this symbol *}
289 .combined_entry_type *native;
291 . {* A pointer to the linenumber information for this symbol *}
292 .struct lineno_cache_entry *lineno;
294 . {* Have the line numbers been relocated yet ? *}
295 .boolean done_lineno;
301 #include "coffswap.h"
303 /* void warning(); */
306 * Return a word with STYP_* (scnhdr.s_flags) flags set to represent the
307 * incoming SEC_* flags. The inverse of this function is styp_to_sec_flags().
308 * NOTE: If you add to/change this routine, you should mirror the changes
309 * in styp_to_sec_flags().
312 sec_to_styp_flags (sec_name
, sec_flags
)
313 CONST
char *sec_name
;
318 if (!strcmp (sec_name
, _TEXT
))
320 styp_flags
= STYP_TEXT
;
322 else if (!strcmp (sec_name
, _DATA
))
324 styp_flags
= STYP_DATA
;
327 else if (!strcmp (sec_name
, ".data2"))
329 styp_flags
= STYP_DATA
;
330 #endif /* TWO_DATA_SECS */
332 else if (!strcmp (sec_name
, _BSS
))
334 styp_flags
= STYP_BSS
;
337 else if (!strcmp (sec_name
, _COMMENT
))
339 styp_flags
= STYP_INFO
;
340 #endif /* _COMMENT */
343 else if (!strcmp (sec_name
, _LIB
))
345 styp_flags
= STYP_LIB
;
349 else if (!strcmp (sec_name
, _LIT
))
351 styp_flags
= STYP_LIT
;
354 else if (!strcmp (sec_name
, ".debug"))
357 styp_flags
= STYP_DEBUG
;
359 styp_flags
= STYP_INFO
;
362 else if (!strcmp (sec_name
, ".stab")
363 || !strncmp (sec_name
, ".stabstr", 8))
365 styp_flags
= STYP_INFO
;
367 /* Try and figure out what it should be */
368 else if (sec_flags
& SEC_CODE
)
370 styp_flags
= STYP_TEXT
;
372 else if (sec_flags
& SEC_DATA
)
374 styp_flags
= STYP_DATA
;
376 else if (sec_flags
& SEC_READONLY
)
378 #ifdef STYP_LIT /* 29k readonly text/data section */
379 styp_flags
= STYP_LIT
;
381 styp_flags
= STYP_TEXT
;
382 #endif /* STYP_LIT */
384 else if (sec_flags
& SEC_LOAD
)
386 styp_flags
= STYP_TEXT
;
388 else if (sec_flags
& SEC_ALLOC
)
390 styp_flags
= STYP_BSS
;
394 if ((sec_flags
& (SEC_NEVER_LOAD
| SEC_COFF_SHARED_LIBRARY
)) != 0)
395 styp_flags
|= STYP_NOLOAD
;
401 * Return a word with SEC_* flags set to represent the incoming
402 * STYP_* flags (from scnhdr.s_flags). The inverse of this
403 * function is sec_to_styp_flags().
404 * NOTE: If you add to/change this routine, you should mirror the changes
405 * in sec_to_styp_flags().
408 styp_to_sec_flags (abfd
, hdr
, name
)
413 struct internal_scnhdr
*internal_s
= (struct internal_scnhdr
*) hdr
;
414 long styp_flags
= internal_s
->s_flags
;
415 flagword sec_flags
= 0;
418 if (styp_flags
& STYP_NOLOAD
)
420 sec_flags
|= SEC_NEVER_LOAD
;
422 #endif /* STYP_NOLOAD */
424 /* For 386 COFF, at least, an unloadable text or data section is
425 actually a shared library section. */
426 if (styp_flags
& STYP_TEXT
)
428 if (sec_flags
& SEC_NEVER_LOAD
)
429 sec_flags
|= SEC_CODE
| SEC_COFF_SHARED_LIBRARY
;
431 sec_flags
|= SEC_CODE
| SEC_LOAD
| SEC_ALLOC
;
433 else if (styp_flags
& STYP_DATA
)
435 if (sec_flags
& SEC_NEVER_LOAD
)
436 sec_flags
|= SEC_DATA
| SEC_COFF_SHARED_LIBRARY
;
438 sec_flags
|= SEC_DATA
| SEC_LOAD
| SEC_ALLOC
;
440 else if (styp_flags
& STYP_BSS
)
442 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
443 if (sec_flags
& SEC_NEVER_LOAD
)
444 sec_flags
|= SEC_ALLOC
| SEC_COFF_SHARED_LIBRARY
;
447 sec_flags
|= SEC_ALLOC
;
449 else if (styp_flags
& STYP_INFO
)
451 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
452 defined. coff_compute_section_file_positions uses
453 COFF_PAGE_SIZE to ensure that the low order bits of the
454 section VMA and the file offset match. If we don't know
455 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
456 and demand page loading of the file will fail. */
457 #ifdef COFF_PAGE_SIZE
458 sec_flags
|= SEC_DEBUGGING
;
461 else if (strcmp (name
, _TEXT
) == 0)
463 if (sec_flags
& SEC_NEVER_LOAD
)
464 sec_flags
|= SEC_CODE
| SEC_COFF_SHARED_LIBRARY
;
466 sec_flags
|= SEC_CODE
| SEC_LOAD
| SEC_ALLOC
;
468 else if (strcmp (name
, _DATA
) == 0
470 || strcmp (name
, ".data2") == 0
474 if (sec_flags
& SEC_NEVER_LOAD
)
475 sec_flags
|= SEC_DATA
| SEC_COFF_SHARED_LIBRARY
;
477 sec_flags
|= SEC_DATA
| SEC_LOAD
| SEC_ALLOC
;
479 else if (strcmp (name
, _BSS
) == 0)
481 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
482 if (sec_flags
& SEC_NEVER_LOAD
)
483 sec_flags
|= SEC_ALLOC
| SEC_COFF_SHARED_LIBRARY
;
486 sec_flags
|= SEC_ALLOC
;
488 else if (strcmp (name
, ".debug") == 0
490 || strcmp (name
, _COMMENT
) == 0
492 || strcmp (name
, ".stab") == 0
493 || strcmp (name
, ".stabstr") == 0)
495 #ifdef COFF_PAGE_SIZE
496 sec_flags
|= SEC_DEBUGGING
;
500 else if (strcmp (name
, _LIB
) == 0)
504 else if (strcmp (name
, _LIT
) == 0)
506 sec_flags
= SEC_LOAD
| SEC_ALLOC
| SEC_READONLY
;
511 sec_flags
|= SEC_ALLOC
| SEC_LOAD
;
514 #ifdef STYP_LIT /* A29k readonly text/data section type */
515 if ((styp_flags
& STYP_LIT
) == STYP_LIT
)
517 sec_flags
= (SEC_LOAD
| SEC_ALLOC
| SEC_READONLY
);
519 #endif /* STYP_LIT */
520 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
521 if (styp_flags
& STYP_OTHER_LOAD
)
523 sec_flags
= (SEC_LOAD
| SEC_ALLOC
);
525 #endif /* STYP_SDATA */
530 #define get_index(symbol) ((symbol)->udata.i)
534 bfd_coff_backend_data
538 Special entry points for gdb to swap in coff symbol table parts:
541 . void (*_bfd_coff_swap_aux_in) PARAMS ((
550 . void (*_bfd_coff_swap_sym_in) PARAMS ((
555 . void (*_bfd_coff_swap_lineno_in) PARAMS ((
561 Special entry points for gas to swap out coff parts:
563 . unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
572 . unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
577 . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
582 . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
587 . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
592 . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
597 . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
603 Special entry points for generic COFF routines to call target
604 dependent COFF routines:
606 . unsigned int _bfd_filhsz;
607 . unsigned int _bfd_aoutsz;
608 . unsigned int _bfd_scnhsz;
609 . unsigned int _bfd_symesz;
610 . unsigned int _bfd_auxesz;
611 . unsigned int _bfd_relsz;
612 . unsigned int _bfd_linesz;
613 . boolean _bfd_coff_long_filenames;
614 . void (*_bfd_coff_swap_filehdr_in) PARAMS ((
618 . void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
622 . void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
626 . void (*_bfd_coff_swap_reloc_in) PARAMS ((
630 . boolean (*_bfd_coff_bad_format_hook) PARAMS ((
632 . PTR internal_filehdr));
633 . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
635 . PTR internal_filehdr));
636 . PTR (*_bfd_coff_mkobject_hook) PARAMS ((
638 . PTR internal_filehdr,
639 . PTR internal_aouthdr));
640 . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
642 . PTR internal_scnhdr,
643 . const char *name));
644 . asection *(*_bfd_make_section_hook) PARAMS ((
647 . void (*_bfd_set_alignment_hook) PARAMS ((
650 . PTR internal_scnhdr));
651 . boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
653 . boolean (*_bfd_coff_symname_in_debug) PARAMS ((
655 . struct internal_syment *sym));
656 . void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
658 . struct bfd_link_info *link_info,
659 . struct bfd_link_order *link_order,
662 . unsigned int *src_ptr,
663 . unsigned int *dst_ptr));
664 . int (*_bfd_coff_reloc16_estimate) PARAMS ((
666 . asection *input_section,
668 . unsigned int shrink,
669 . struct bfd_link_info *link_info));
670 . boolean (*_bfd_coff_sym_is_global) PARAMS ((
672 . struct internal_syment *));
673 . void (*_bfd_coff_compute_section_file_positions) PARAMS ((
675 . boolean (*_bfd_coff_relocate_section) PARAMS ((
677 . struct bfd_link_info *info,
679 . asection *input_section,
680 . bfd_byte *contents,
681 . struct internal_reloc *relocs,
682 . struct internal_syment *syms,
683 . asection **sections));
684 . reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
687 . struct internal_reloc *rel,
688 . struct coff_link_hash_entry *h,
689 . struct internal_syment *sym,
690 . bfd_vma *addendp));
691 . boolean (*_bfd_coff_adjust_symndx) PARAMS ((
693 . struct bfd_link_info *info,
696 . struct internal_reloc *reloc,
697 . boolean *adjustedp));
699 .} bfd_coff_backend_data;
701 .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
703 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
704 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
706 .#define bfd_coff_swap_sym_in(a,e,i) \
707 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
709 .#define bfd_coff_swap_lineno_in(a,e,i) \
710 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
712 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
713 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
715 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
716 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
718 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
719 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
721 .#define bfd_coff_swap_sym_out(abfd, i,o) \
722 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
724 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
725 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
727 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
728 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
730 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
731 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
733 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
734 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
735 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
736 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
737 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
738 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
739 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
740 .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
741 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
742 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
744 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
745 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
747 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
748 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
750 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
751 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
753 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
754 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
756 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
757 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
758 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
759 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
761 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
762 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
764 .#define bfd_coff_make_section_hook(abfd, name)\
765 . ((coff_backend_info (abfd)->_bfd_make_section_hook) (abfd, name))
767 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
768 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
770 .#define bfd_coff_slurp_symbol_table(abfd)\
771 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
773 .#define bfd_coff_symname_in_debug(abfd, sym)\
774 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
776 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
777 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
778 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
780 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
781 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
782 . (abfd, section, reloc, shrink, link_info))
784 .#define bfd_coff_sym_is_global(abfd, sym)\
785 . ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
788 .#define bfd_coff_compute_section_file_positions(abfd)\
789 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
792 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
793 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
794 . (obfd, info, ibfd, o, con, rel, isyms, secs))
795 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
796 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
797 . (abfd, sec, rel, h, sym, addendp))
798 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
799 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
800 . (obfd, info, ibfd, sec, rel, adjustedp))
804 /* See whether the magic number matches. */
807 coff_bad_format_hook (abfd
, filehdr
)
811 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
813 if (BADMAG (*internal_f
))
816 /* if the optional header is NULL or not the correct size then
817 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
818 and Intel 960 readwrite headers (I960WRMAGIC) is that the
819 optional header is of a different size.
821 But the mips keeps extra stuff in it's opthdr, so dont check
825 #if defined(M88) || defined(I960)
826 if (internal_f
->f_opthdr
!= 0 && AOUTSZ
!= internal_f
->f_opthdr
)
834 coff_make_section_hook (abfd
, name
)
839 /* FIXME: This predates the call to bfd_make_section_anyway
840 in make_a_section_from_file, and can probably go away. */
841 /* On SCO a file created by the Microsoft assembler can have two
842 .data sections. We use .data2 for the second one. */
843 if (strcmp (name
, _DATA
) == 0)
844 return bfd_make_section (abfd
, ".data2");
846 return (asection
*) NULL
;
850 initialize a section structure with information peculiar to this
851 particular implementation of coff
855 coff_new_section_hook (abfd
, section
)
859 section
->alignment_power
= COFF_DEFAULT_SECTION_ALIGNMENT_POWER
;
861 /* Allocate aux records for section symbols, to store size and
864 @@ Shouldn't use constant multiplier here! */
865 coffsymbol (section
->symbol
)->native
=
866 (combined_entry_type
*) bfd_zalloc (abfd
,
867 sizeof (combined_entry_type
) * 10);
869 /* The .stab section must be aligned to 2**2 at most, because
870 otherwise there may be gaps in the section which gdb will not
871 know how to interpret. Examining the section name is a hack, but
872 that is also how gdb locates the section. We also align the
873 .stabstr section this way for backward compatibility, although I
874 believe it would work anyhow. */
875 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER
> 2
876 && (strcmp (section
->name
, ".stab") == 0
877 || strcmp (section
->name
, ".stabstr") == 0))
878 section
->alignment_power
= 2;
885 /* Set the alignment of a BFD section. */
888 coff_set_alignment_hook (abfd
, section
, scnhdr
)
893 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
896 for (i
= 0; i
< 32; i
++)
897 if ((1 << i
) >= hdr
->s_align
)
899 section
->alignment_power
= i
;
904 #define coff_set_alignment_hook \
905 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
913 coff_data_type
*coff
;
915 abfd
->tdata
.coff_obj_data
= (struct coff_tdata
*) bfd_zalloc (abfd
, sizeof (coff_data_type
));
916 if (abfd
->tdata
.coff_obj_data
== 0)
918 bfd_set_error (bfd_error_no_memory
);
921 coff
= coff_data (abfd
);
922 coff
->symbols
= (coff_symbol_type
*) NULL
;
923 coff
->conversion_table
= (unsigned int *) NULL
;
924 coff
->raw_syments
= (struct coff_ptr_struct
*) NULL
;
926 /* make_abs_section(abfd);*/
930 /* Create the COFF backend specific information. */
933 coff_mkobject_hook (abfd
, filehdr
, aouthdr
)
938 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
939 coff_data_type
*coff
;
941 if (coff_mkobject (abfd
) == false)
944 coff
= coff_data (abfd
);
946 coff
->sym_filepos
= internal_f
->f_symptr
;
948 /* These members communicate important constants about the symbol
949 table to GDB's symbol-reading code. These `constants'
950 unfortunately vary among coff implementations... */
951 coff
->local_n_btmask
= N_BTMASK
;
952 coff
->local_n_btshft
= N_BTSHFT
;
953 coff
->local_n_tmask
= N_TMASK
;
954 coff
->local_n_tshift
= N_TSHIFT
;
955 coff
->local_symesz
= SYMESZ
;
956 coff
->local_auxesz
= AUXESZ
;
957 coff
->local_linesz
= LINESZ
;
959 obj_raw_syment_count (abfd
) =
960 obj_conv_table_size (abfd
) =
966 /* Determine the machine architecture and type. FIXME: This is target
967 dependent because the magic numbers are defined in the target
968 dependent header files. But there is no particular need for this.
969 If the magic numbers were moved to a separate file, this function
970 would be target independent and would also be much more successful
971 at linking together COFF files for different architectures. */
974 coff_set_arch_mach_hook (abfd
, filehdr
)
979 enum bfd_architecture arch
;
980 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
983 switch (internal_f
->f_magic
)
988 case I386AIXMAGIC
: /* Danbury PS/2 AIX C Compiler */
989 case LYNXCOFFMAGIC
: /* shadows the m68k Lynx number below, sigh */
990 arch
= bfd_arch_i386
;
995 #ifdef A29K_MAGIC_BIG
997 case A29K_MAGIC_LITTLE
:
998 arch
= bfd_arch_a29k
;
1006 #ifdef MC68KBCSMAGIC
1009 #ifdef APOLLOM68KMAGIC
1010 case APOLLOM68KMAGIC
:
1012 #ifdef LYNXCOFFMAGIC
1015 arch
= bfd_arch_m68k
;
1023 arch
= bfd_arch_m88k
;
1029 arch
= bfd_arch_z8k
;
1030 switch (internal_f
->f_flags
& F_MACHMASK
)
1033 machine
= bfd_mach_z8001
;
1036 machine
= bfd_mach_z8002
;
1047 arch
= bfd_arch_i960
;
1048 switch (F_I960TYPE
& internal_f
->f_flags
)
1052 machine
= bfd_mach_i960_core
;
1055 machine
= bfd_mach_i960_kb_sb
;
1058 machine
= bfd_mach_i960_mc
;
1061 machine
= bfd_mach_i960_xa
;
1064 machine
= bfd_mach_i960_ca
;
1067 machine
= bfd_mach_i960_ka_sa
;
1069 /* start-sanitize-i960xl */
1071 machine
= bfd_mach_i960_xl
;
1073 /* end-sanitize-i960xl */
1083 arch
= bfd_arch_rs6000
;
1090 arch
= bfd_arch_we32k
;
1097 arch
= bfd_arch_h8300
;
1098 machine
= bfd_mach_h8300
;
1099 /* !! FIXME this probably isn't the right place for this */
1100 abfd
->flags
|= BFD_IS_RELAXABLE
;
1106 arch
= bfd_arch_h8300
;
1107 machine
= bfd_mach_h8300h
;
1108 /* !! FIXME this probably isn't the right place for this */
1109 abfd
->flags
|= BFD_IS_RELAXABLE
;
1113 #ifdef SH_ARCH_MAGIC_BIG
1114 case SH_ARCH_MAGIC_BIG
:
1115 case SH_ARCH_MAGIC_LITTLE
:
1123 arch
= bfd_arch_h8500
;
1130 #ifdef LYNXCOFFMAGIC
1133 arch
= bfd_arch_sparc
;
1138 default: /* Unreadable input file type */
1139 arch
= bfd_arch_obscure
;
1143 bfd_default_set_arch_mach (abfd
, arch
, machine
);
1147 #ifdef SYMNAME_IN_DEBUG
1150 symname_in_debug_hook (abfd
, sym
)
1152 struct internal_syment
*sym
;
1154 return SYMNAME_IN_DEBUG (sym
) ? true : false;
1159 #define symname_in_debug_hook \
1160 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
1168 To write relocations, the back end steps though the
1169 canonical relocation table and create an
1170 @code{internal_reloc}. The symbol index to use is removed from
1171 the @code{offset} field in the symbol table supplied. The
1172 address comes directly from the sum of the section base
1173 address and the relocation offset; the type is dug directly
1174 from the howto field. Then the @code{internal_reloc} is
1175 swapped into the shape of an @code{external_reloc} and written
1181 coff_write_relocs (abfd
)
1185 for (s
= abfd
->sections
; s
!= (asection
*) NULL
; s
= s
->next
)
1188 struct external_reloc dst
;
1190 arelent
**p
= s
->orelocation
;
1191 if (bfd_seek (abfd
, s
->rel_filepos
, SEEK_SET
) != 0)
1193 for (i
= 0; i
< s
->reloc_count
; i
++)
1195 struct internal_reloc n
;
1197 memset ((PTR
) & n
, 0, sizeof (n
));
1199 n
.r_vaddr
= q
->address
+ s
->vma
;
1202 /* The 29k const/consth reloc pair is a real kludge. The consth
1203 part doesn't have a symbol; it has an offset. So rebuilt
1205 if (q
->howto
->type
== R_IHCONST
)
1206 n
.r_symndx
= q
->addend
;
1211 if (q
->sym_ptr_ptr
== bfd_abs_section_ptr
->symbol_ptr_ptr
)
1212 /* This is a relocation relative to the absolute symbol. */
1216 n
.r_symndx
= get_index ((*(q
->sym_ptr_ptr
)));
1217 /* Take notice if the symbol reloc points to a symbol
1218 we don't have in our symbol table. What should we
1220 if (n
.r_symndx
> obj_conv_table_size (abfd
))
1225 #ifdef SWAP_OUT_RELOC_OFFSET
1226 n
.r_offset
= q
->addend
;
1230 /* Work out reloc type from what is required */
1231 SELECT_RELOC (n
, q
->howto
);
1233 n
.r_type
= q
->howto
->type
;
1235 coff_swap_reloc_out (abfd
, &n
, &dst
);
1236 if (bfd_write ((PTR
) & dst
, 1, RELSZ
, abfd
) != RELSZ
)
1244 /* Set flags and magic number of a coff file from architecture and machine
1245 type. Result is true if we can represent the arch&type, false if not. */
1248 coff_set_flags (abfd
, magicp
, flagsp
)
1251 unsigned short *flagsp
;
1253 switch (bfd_get_arch (abfd
))
1258 switch (bfd_get_mach (abfd
))
1260 case bfd_mach_z8001
:
1263 case bfd_mach_z8002
:
1277 *magicp
= I960ROMAGIC
;
1279 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
1280 I960RWMAGIC); FIXME???
1282 switch (bfd_get_mach (abfd
))
1284 case bfd_mach_i960_core
:
1287 case bfd_mach_i960_kb_sb
:
1290 case bfd_mach_i960_mc
:
1293 case bfd_mach_i960_xa
:
1296 case bfd_mach_i960_ca
:
1299 case bfd_mach_i960_ka_sa
:
1302 /* start-sanitize-i960xl */
1303 case bfd_mach_i960_xl
:
1306 /* end-sanitize-i960xl */
1317 *magicp
= I386MAGIC
;
1319 /* Just overwrite the usual value if we're doing Lynx. */
1320 *magicp
= LYNXCOFFMAGIC
;
1327 #ifdef APOLLOM68KMAGIC
1328 *magicp
= APOLLO_COFF_VERSION_NUMBER
;
1330 *magicp
= MC68MAGIC
;
1333 /* Just overwrite the usual value if we're doing Lynx. */
1334 *magicp
= LYNXCOFFMAGIC
;
1342 *magicp
= MC88OMAGIC
;
1347 case bfd_arch_h8300
:
1348 switch (bfd_get_mach (abfd
))
1350 case bfd_mach_h8300
:
1351 *magicp
= H8300MAGIC
;
1353 case bfd_mach_h8300h
:
1354 *magicp
= H8300HMAGIC
;
1360 #ifdef SH_ARCH_MAGIC_BIG
1362 if (abfd
->xvec
->byteorder_big_p
)
1363 *magicp
= SH_ARCH_MAGIC_BIG
;
1365 *magicp
= SH_ARCH_MAGIC_LITTLE
;
1371 case bfd_arch_sparc
:
1372 *magicp
= SPARCMAGIC
;
1374 /* Just overwrite the usual value if we're doing Lynx. */
1375 *magicp
= LYNXCOFFMAGIC
;
1382 case bfd_arch_h8500
:
1383 *magicp
= H8500MAGIC
;
1387 #ifdef A29K_MAGIC_BIG
1389 if (abfd
->xvec
->byteorder_big_p
)
1390 *magicp
= A29K_MAGIC_BIG
;
1392 *magicp
= A29K_MAGIC_LITTLE
;
1398 case bfd_arch_we32k
:
1399 *magicp
= WE32KMAGIC
;
1405 case bfd_arch_rs6000
:
1406 case bfd_arch_powerpc
:
1407 *magicp
= U802TOCMAGIC
;
1412 default: /* Unknown architecture */
1413 /* return false; -- fall through to "return false" below, to avoid
1414 "statement never reached" errors on the one below. */
1423 coff_set_arch_mach (abfd
, arch
, machine
)
1425 enum bfd_architecture arch
;
1426 unsigned long machine
;
1429 unsigned short dummy2
;
1431 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
1434 if (arch
!= bfd_arch_unknown
&&
1435 coff_set_flags (abfd
, &dummy1
, &dummy2
) != true)
1436 return false; /* We can't represent this type */
1438 return true; /* We're easy ... */
1442 /* Calculate the file position for each section. */
1445 coff_compute_section_file_positions (abfd
)
1449 asection
*previous
= (asection
*) NULL
;
1450 file_ptr sofar
= FILHSZ
;
1456 if (bfd_get_start_address (abfd
))
1458 /* A start address may have been added to the original file. In this
1459 case it will need an optional header to record it. */
1460 abfd
->flags
|= EXEC_P
;
1463 if (abfd
->flags
& EXEC_P
)
1466 sofar
+= abfd
->section_count
* SCNHSZ
;
1467 for (current
= abfd
->sections
, count
= 1;
1468 current
!= (asection
*) NULL
;
1469 current
= current
->next
, ++count
)
1471 current
->target_index
= count
;
1473 /* Only deal with sections which have contents */
1474 if (!(current
->flags
& SEC_HAS_CONTENTS
))
1477 /* Align the sections in the file to the same boundary on
1478 which they are aligned in virtual memory. I960 doesn't
1479 do this (FIXME) so we can stay in sync with Intel. 960
1480 doesn't yet page from files... */
1483 /* make sure this section is aligned on the right boundary - by
1484 padding the previous section up if necessary */
1487 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
1488 if (previous
!= (asection
*) NULL
)
1490 previous
->_raw_size
+= sofar
- old_sofar
;
1496 #ifdef COFF_PAGE_SIZE
1497 /* In demand paged files the low order bits of the file offset
1498 must match the low order bits of the virtual address. */
1499 if ((abfd
->flags
& D_PAGED
) != 0
1500 && (current
->flags
& SEC_ALLOC
) != 0)
1501 sofar
+= (current
->vma
- sofar
) % COFF_PAGE_SIZE
;
1504 current
->filepos
= sofar
;
1506 sofar
+= current
->_raw_size
;
1508 /* make sure that this section is of the right size too */
1510 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
1511 current
->_raw_size
+= sofar
- old_sofar
;
1515 /* Force .lib sections to start at zero. The vma is then
1516 incremented in coff_set_section_contents. This is right for
1518 if (strcmp (current
->name
, _LIB
) == 0)
1519 bfd_set_section_vma (abfd
, current
, 0);
1524 obj_relocbase (abfd
) = sofar
;
1525 abfd
->output_has_begun
= true;
1528 #ifndef RS6000COFF_C
1530 /* If .file, .text, .data, .bss symbols are missing, add them. */
1531 /* @@ Should we only be adding missing symbols, or overriding the aux
1532 values for existing section symbols? */
1534 coff_add_missing_symbols (abfd
)
1537 unsigned int nsyms
= bfd_get_symcount (abfd
);
1538 asymbol
**sympp
= abfd
->outsymbols
;
1541 int need_text
= 1, need_data
= 1, need_bss
= 1, need_file
= 1;
1543 for (i
= 0; i
< nsyms
; i
++)
1545 coff_symbol_type
*csym
= coff_symbol_from (abfd
, sympp
[i
]);
1549 /* only do this if there is a coff representation of the input
1551 if (csym
->native
&& csym
->native
->u
.syment
.n_sclass
== C_FILE
)
1556 name
= csym
->symbol
.name
;
1559 if (!strcmp (name
, _TEXT
))
1562 else if (!strcmp (name
, ".wtext"))
1565 else if (!strcmp (name
, _DATA
))
1567 else if (!strcmp (name
, _BSS
))
1571 /* Now i == bfd_get_symcount (abfd). */
1572 /* @@ For now, don't deal with .file symbol. */
1575 if (!need_text
&& !need_data
&& !need_bss
&& !need_file
)
1577 nsyms
+= need_text
+ need_data
+ need_bss
+ need_file
;
1578 sympp2
= (asymbol
**) bfd_alloc_by_size_t (abfd
, nsyms
* sizeof (asymbol
*));
1581 bfd_set_error (bfd_error_no_memory
);
1584 memcpy (sympp2
, sympp
, i
* sizeof (asymbol
*));
1587 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
1591 sympp2
[i
++] = coff_section_symbol (abfd
, _TEXT
);
1593 sympp2
[i
++] = coff_section_symbol (abfd
, _DATA
);
1595 sympp2
[i
++] = coff_section_symbol (abfd
, _BSS
);
1596 BFD_ASSERT (i
== nsyms
);
1597 bfd_set_symtab (abfd
, sympp2
, nsyms
);
1601 #endif /* ! defined (RS6000COFF_C) */
1606 coff_write_object_contents (abfd
)
1610 boolean hasrelocs
= false;
1611 boolean haslinno
= false;
1612 file_ptr reloc_base
;
1613 file_ptr lineno_base
;
1615 unsigned long reloc_size
= 0;
1616 unsigned long lnno_size
= 0;
1617 asection
*text_sec
= NULL
;
1618 asection
*data_sec
= NULL
;
1619 asection
*bss_sec
= NULL
;
1621 struct internal_filehdr internal_f
;
1622 struct internal_aouthdr internal_a
;
1625 bfd_set_error (bfd_error_system_call
);
1627 if (abfd
->output_has_begun
== false)
1628 coff_compute_section_file_positions (abfd
);
1630 reloc_base
= obj_relocbase (abfd
);
1632 /* Make a pass through the symbol table to count line number entries and
1633 put them into the correct asections */
1635 lnno_size
= coff_count_linenumbers (abfd
) * LINESZ
;
1637 /* Work out the size of the reloc and linno areas */
1639 for (current
= abfd
->sections
; current
!= NULL
; current
=
1641 reloc_size
+= current
->reloc_count
* RELSZ
;
1643 lineno_base
= reloc_base
+ reloc_size
;
1644 sym_base
= lineno_base
+ lnno_size
;
1646 /* Indicate in each section->line_filepos its actual file address */
1647 for (current
= abfd
->sections
; current
!= NULL
; current
=
1650 if (current
->lineno_count
)
1652 current
->line_filepos
= lineno_base
;
1653 current
->moving_line_filepos
= lineno_base
;
1654 lineno_base
+= current
->lineno_count
* LINESZ
;
1658 current
->line_filepos
= 0;
1660 if (current
->reloc_count
)
1662 current
->rel_filepos
= reloc_base
;
1663 reloc_base
+= current
->reloc_count
* RELSZ
;
1667 current
->rel_filepos
= 0;
1671 /* Write section headers to the file. */
1672 internal_f
.f_nscns
= 0;
1674 (file_ptr
) ((abfd
->flags
& EXEC_P
) ?
1675 (FILHSZ
+ AOUTSZ
) : FILHSZ
),
1681 for (current
= abfd
->sections
;
1683 current
= current
->next
)
1685 struct internal_scnhdr section
;
1687 internal_f
.f_nscns
++;
1688 strncpy (&(section
.s_name
[0]), current
->name
, 8);
1690 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
1691 Ian Taylor <ian@cygnus.com>. */
1692 if (strcmp (current
->name
, _LIB
) == 0)
1693 section
.s_vaddr
= 0;
1696 section
.s_vaddr
= current
->lma
;
1697 section
.s_paddr
= current
->lma
;
1698 section
.s_size
= current
->_raw_size
;
1700 If this section has no size or is unloadable then the scnptr
1703 if (current
->_raw_size
== 0 ||
1704 (current
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
1706 section
.s_scnptr
= 0;
1710 section
.s_scnptr
= current
->filepos
;
1712 section
.s_relptr
= current
->rel_filepos
;
1713 section
.s_lnnoptr
= current
->line_filepos
;
1714 section
.s_nreloc
= current
->reloc_count
;
1715 section
.s_nlnno
= current
->lineno_count
;
1716 if (current
->reloc_count
!= 0)
1718 if (current
->lineno_count
!= 0)
1721 section
.s_flags
= sec_to_styp_flags (current
->name
, current
->flags
);
1723 if (!strcmp (current
->name
, _TEXT
))
1727 else if (!strcmp (current
->name
, _DATA
))
1730 #ifdef TWO_DATA_SECS
1732 else if (!strcmp (current
->name
, ".data2"))
1735 #endif /* TWO_DATA_SECS */
1737 else if (!strcmp (current
->name
, _BSS
))
1743 section
.s_align
= (current
->alignment_power
1744 ? 1 << current
->alignment_power
1751 coff_swap_scnhdr_out (abfd
, §ion
, &buff
);
1752 if (bfd_write ((PTR
) (&buff
), 1, SCNHSZ
, abfd
) != SCNHSZ
)
1760 /* OK, now set up the filehdr... */
1762 /* Don't include the internal abs section in the section count */
1765 We will NOT put a fucking timestamp in the header here. Every time you
1766 put it back, I will come in and take it out again. I'm sorry. This
1767 field does not belong here. We fill it with a 0 so it compares the
1768 same but is not a reasonable time. -- gnu@cygnus.com
1770 internal_f
.f_timdat
= 0;
1772 internal_f
.f_flags
= 0;
1774 if (abfd
->flags
& EXEC_P
)
1775 internal_f
.f_opthdr
= AOUTSZ
;
1777 internal_f
.f_opthdr
= 0;
1780 internal_f
.f_flags
|= F_RELFLG
;
1782 internal_f
.f_flags
|= F_LNNO
;
1783 if (abfd
->flags
& EXEC_P
)
1784 internal_f
.f_flags
|= F_EXEC
;
1786 if (!abfd
->xvec
->byteorder_big_p
)
1787 internal_f
.f_flags
|= F_AR32WR
;
1789 internal_f
.f_flags
|= F_AR32W
;
1792 FIXME, should do something about the other byte orders and
1796 memset (&internal_a
, 0, sizeof internal_a
);
1798 /* Set up architecture-dependent stuff */
1801 unsigned int magic
= 0;
1802 unsigned short flags
= 0;
1803 coff_set_flags (abfd
, &magic
, &flags
);
1804 internal_f
.f_magic
= magic
;
1805 internal_f
.f_flags
|= flags
;
1806 /* ...and the "opt"hdr... */
1809 #ifdef ULTRA3 /* NYU's machine */
1810 /* FIXME: This is a bogus check. I really want to see if there
1811 * is a .shbss or a .shdata section, if so then set the magic
1812 * number to indicate a shared data executable.
1814 if (internal_f
.f_nscns
>= 7)
1815 internal_a
.magic
= SHMAGIC
; /* Shared magic */
1818 internal_a
.magic
= NMAGIC
;/* Assume separate i/d */
1819 #define __A_MAGIC_SET__
1822 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
1823 #define __A_MAGIC_SET__
1826 #define __A_MAGIC_SET__
1827 internal_a
.magic
= PAGEMAGICBCS
;
1831 #define __A_MAGIC_SET__
1832 internal_a
.magic
= APOLLO_COFF_VERSION_NUMBER
;
1835 #if defined(M68) || defined(WE32K) || defined(M68K)
1836 #define __A_MAGIC_SET__
1838 internal_a
.magic
= LYNXCOFFMAGIC
;
1840 #endif /* M68 || WE32K || M68K */
1843 #define __A_MAGIC_SET__
1845 internal_a
.magic
= LYNXCOFFMAGIC
;
1847 internal_a
.magic
= ZMAGIC
;
1852 #define __A_MAGIC_SET__
1854 internal_a
.magic
= LYNXCOFFMAGIC
;
1859 #define __A_MAGIC_SET__
1860 internal_a
.magic
= (abfd
->flags
& D_PAGED
) ? RS6K_AOUTHDR_ZMAGIC
:
1861 (abfd
->flags
& WP_TEXT
) ? RS6K_AOUTHDR_NMAGIC
:
1862 RS6K_AOUTHDR_OMAGIC
;
1865 #ifndef __A_MAGIC_SET__
1866 #include "Your aouthdr magic number is not being set!"
1868 #undef __A_MAGIC_SET__
1871 /* Now should write relocs, strings, syms */
1872 obj_sym_filepos (abfd
) = sym_base
;
1874 if (bfd_get_symcount (abfd
) != 0)
1876 #ifndef RS6000COFF_C
1877 if (!coff_add_missing_symbols (abfd
))
1880 if (!coff_renumber_symbols (abfd
))
1882 coff_mangle_symbols (abfd
);
1883 if (! coff_write_symbols (abfd
))
1885 if (! coff_write_linenumbers (abfd
))
1887 if (! coff_write_relocs (abfd
))
1891 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
1892 backend linker, and obj_raw_syment_count is not valid until after
1893 coff_write_symbols is called. */
1894 if (obj_raw_syment_count (abfd
) != 0)
1895 internal_f
.f_symptr
= sym_base
;
1898 internal_f
.f_symptr
= 0;
1899 internal_f
.f_flags
|= F_LSYMS
;
1904 internal_a
.tsize
= bfd_get_section_size_before_reloc (text_sec
);
1905 internal_a
.text_start
= internal_a
.tsize
? text_sec
->vma
: 0;
1909 internal_a
.dsize
= bfd_get_section_size_before_reloc (data_sec
);
1910 internal_a
.data_start
= internal_a
.dsize
? data_sec
->vma
: 0;
1914 internal_a
.bsize
= bfd_get_section_size_before_reloc (bss_sec
);
1917 internal_a
.entry
= bfd_get_start_address (abfd
);
1918 internal_f
.f_nsyms
= obj_raw_syment_count (abfd
);
1920 /* now write them */
1921 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
1925 coff_swap_filehdr_out (abfd
, (PTR
) & internal_f
, (PTR
) & buff
);
1926 if (bfd_write ((PTR
) & buff
, 1, FILHSZ
, abfd
) != FILHSZ
)
1929 if (abfd
->flags
& EXEC_P
)
1932 coff_swap_aouthdr_out (abfd
, (PTR
) & internal_a
, (PTR
) & buff
);
1933 if (bfd_write ((PTR
) & buff
, 1, AOUTSZ
, abfd
) != AOUTSZ
)
1940 coff_set_section_contents (abfd
, section
, location
, offset
, count
)
1945 bfd_size_type count
;
1947 if (abfd
->output_has_begun
== false) /* set by bfd.c handler */
1948 coff_compute_section_file_positions (abfd
);
1951 /* If this is a .lib section, bump the vma address so that it
1952 winds up being the number of .lib sections output. This is
1953 right for SVR3.2. Shared libraries should probably get more
1954 generic support. Ian Taylor <ian@cygnus.com>. */
1955 if (strcmp (section
->name
, _LIB
) == 0)
1959 /* Don't write out bss sections - one way to do this is to
1960 see if the filepos has not been set. */
1961 if (section
->filepos
== 0)
1964 if (bfd_seek (abfd
, (file_ptr
) (section
->filepos
+ offset
), SEEK_SET
) != 0)
1969 return (bfd_write (location
, 1, count
, abfd
) == count
) ? true : false;
1975 coff_close_and_cleanup (abfd
)
1978 if (!bfd_read_p (abfd
))
1979 switch (abfd
->format
)
1982 if (!_bfd_write_archive_contents (abfd
))
1986 if (!coff_write_object_contents (abfd
))
1990 bfd_set_error (bfd_error_invalid_operation
);
1994 /* We depend on bfd_close to free all the memory on the obstack. */
1995 /* FIXME if bfd_release is not using obstacks! */
2002 buy_and_read (abfd
, where
, seek_direction
, size
)
2008 PTR area
= (PTR
) bfd_alloc (abfd
, size
);
2011 bfd_set_error (bfd_error_no_memory
);
2014 if (bfd_seek (abfd
, where
, seek_direction
) != 0
2015 || bfd_read (area
, 1, size
, abfd
) != size
)
2018 } /* buy_and_read() */
2024 Creating the linenumber table is done by reading in the entire
2025 coff linenumber table, and creating another table for internal use.
2027 A coff linenumber table is structured so that each function
2028 is marked as having a line number of 0. Each line within the
2029 function is an offset from the first line in the function. The
2030 base of the line number information for the table is stored in
2031 the symbol associated with the function.
2033 The information is copied from the external to the internal
2034 table, and each symbol which marks a function is marked by
2037 How does this work ?
2042 coff_slurp_line_table (abfd
, asect
)
2046 LINENO
*native_lineno
;
2047 alent
*lineno_cache
;
2049 BFD_ASSERT (asect
->lineno
== (alent
*) NULL
);
2051 native_lineno
= (LINENO
*) buy_and_read (abfd
,
2052 asect
->line_filepos
,
2055 asect
->lineno_count
));
2057 (alent
*) bfd_alloc (abfd
, (size_t) ((asect
->lineno_count
+ 1) * sizeof (alent
)));
2058 if (lineno_cache
== NULL
)
2060 bfd_set_error (bfd_error_no_memory
);
2065 unsigned int counter
= 0;
2066 alent
*cache_ptr
= lineno_cache
;
2067 LINENO
*src
= native_lineno
;
2069 while (counter
< asect
->lineno_count
)
2071 struct internal_lineno dst
;
2072 coff_swap_lineno_in (abfd
, src
, &dst
);
2073 cache_ptr
->line_number
= dst
.l_lnno
;
2075 if (cache_ptr
->line_number
== 0)
2077 coff_symbol_type
*sym
=
2078 (coff_symbol_type
*) (dst
.l_addr
.l_symndx
2079 + obj_raw_syments (abfd
))->u
.syment
._n
._n_n
._n_zeroes
;
2080 cache_ptr
->u
.sym
= (asymbol
*) sym
;
2081 sym
->lineno
= cache_ptr
;
2085 cache_ptr
->u
.offset
= dst
.l_addr
.l_paddr
2086 - bfd_section_vma (abfd
, asect
);
2087 } /* If no linenumber expect a symbol index */
2093 cache_ptr
->line_number
= 0;
2096 asect
->lineno
= lineno_cache
;
2097 /* FIXME, free native_lineno here, or use alloca or something. */
2102 coff_slurp_symbol_table (abfd
)
2105 combined_entry_type
*native_symbols
;
2106 coff_symbol_type
*cached_area
;
2107 unsigned int *table_ptr
;
2109 unsigned int number_of_symbols
= 0;
2110 if (obj_symbols (abfd
))
2112 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0)
2115 /* Read in the symbol table */
2116 if ((native_symbols
= coff_get_normalized_symtab (abfd
)) == NULL
)
2121 /* Allocate enough room for all the symbols in cached form */
2122 cached_area
= ((coff_symbol_type
*)
2124 (obj_raw_syment_count (abfd
)
2125 * sizeof (coff_symbol_type
))));
2127 if (cached_area
== NULL
)
2129 bfd_set_error (bfd_error_no_memory
);
2132 table_ptr
= ((unsigned int *)
2134 (obj_raw_syment_count (abfd
)
2135 * sizeof (unsigned int))));
2137 if (table_ptr
== NULL
)
2139 bfd_set_error (bfd_error_no_memory
);
2144 coff_symbol_type
*dst
= cached_area
;
2145 unsigned int last_native_index
= obj_raw_syment_count (abfd
);
2146 unsigned int this_index
= 0;
2147 while (this_index
< last_native_index
)
2149 combined_entry_type
*src
= native_symbols
+ this_index
;
2150 table_ptr
[this_index
] = number_of_symbols
;
2151 dst
->symbol
.the_bfd
= abfd
;
2153 dst
->symbol
.name
= (char *) (src
->u
.syment
._n
._n_n
._n_offset
);
2154 /* We use the native name field to point to the cached field. */
2155 src
->u
.syment
._n
._n_n
._n_zeroes
= (long) dst
;
2156 dst
->symbol
.section
= coff_section_from_bfd_index (abfd
,
2157 src
->u
.syment
.n_scnum
);
2158 dst
->symbol
.flags
= 0;
2159 dst
->done_lineno
= false;
2161 switch (src
->u
.syment
.n_sclass
)
2166 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
2167 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
2168 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
2170 /* Fall through to next case */
2178 if ((src
->u
.syment
.n_scnum
) == 0)
2180 if ((src
->u
.syment
.n_value
) == 0)
2182 dst
->symbol
.section
= bfd_und_section_ptr
;
2183 dst
->symbol
.value
= 0;
2187 dst
->symbol
.section
= bfd_com_section_ptr
;
2188 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2194 Base the value as an index from the base of the
2198 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
2199 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
2201 if (ISFCN ((src
->u
.syment
.n_type
)))
2204 A function ext does not go at the end of a file
2206 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
2211 /* If this symbol has a csect aux of type LD, the scnlen field
2212 is actually the index of the containing csect symbol. We
2213 need to pointerize it. */
2214 if (src
->u
.syment
.n_numaux
> 0)
2216 combined_entry_type
*aux
;
2218 aux
= src
+ src
->u
.syment
.n_numaux
- 1;
2219 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) == XTY_LD
)
2221 aux
->u
.auxent
.x_csect
.x_scnlen
.p
=
2222 native_symbols
+ aux
->u
.auxent
.x_csect
.x_scnlen
.l
;
2223 aux
->fix_scnlen
= 1;
2230 case C_STAT
: /* static */
2232 case C_LEAFSTAT
: /* static leaf procedure */
2234 case C_LABEL
: /* label */
2235 if (src
->u
.syment
.n_scnum
== -2)
2236 dst
->symbol
.flags
= BSF_DEBUGGING
;
2238 dst
->symbol
.flags
= BSF_LOCAL
;
2240 Base the value as an index from the base of the section, if
2243 if (dst
->symbol
.section
)
2244 dst
->symbol
.value
= (src
->u
.syment
.n_value
) -
2245 dst
->symbol
.section
->vma
;
2247 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2250 case C_MOS
: /* member of structure */
2251 case C_EOS
: /* end of structure */
2252 #ifdef NOTDEF /* C_AUTOARG has the same value */
2254 case C_GLBLREG
: /* A29k-specific storage class */
2257 case C_REGPARM
: /* register parameter */
2258 case C_REG
: /* register variable */
2260 case C_AUTOARG
: /* 960-specific storage class */
2262 case C_TPDEF
: /* type definition */
2264 case C_AUTO
: /* automatic variable */
2265 case C_FIELD
: /* bit field */
2266 case C_ENTAG
: /* enumeration tag */
2267 case C_MOE
: /* member of enumeration */
2268 case C_MOU
: /* member of union */
2269 case C_UNTAG
: /* union tag */
2270 dst
->symbol
.flags
= BSF_DEBUGGING
;
2271 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2274 case C_FILE
: /* file name */
2275 case C_STRTAG
: /* structure tag */
2277 case C_BINCL
: /* beginning of include file */
2278 case C_EINCL
: /* ending of include file */
2290 dst
->symbol
.flags
= BSF_DEBUGGING
;
2291 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2296 dst
->symbol
.flags
= BSF_DEBUGGING
;
2297 dst
->symbol
.value
= src
->u
.syment
.n_value
;
2299 /* The value is actually a symbol index. Save a pointer to
2300 the symbol instead of the index. FIXME: This should use a
2302 src
->u
.syment
.n_value
=
2303 (long) (native_symbols
+ src
->u
.syment
.n_value
);
2308 case C_BLOCK
: /* ".bb" or ".eb" */
2309 case C_FCN
: /* ".bf" or ".ef" */
2310 case C_EFCN
: /* physical end of function */
2311 dst
->symbol
.flags
= BSF_LOCAL
;
2313 Base the value as an index from the base of the section
2315 dst
->symbol
.value
= (src
->u
.syment
.n_value
) - dst
->symbol
.section
->vma
;
2319 case C_EXTDEF
: /* external definition */
2320 case C_ULABEL
: /* undefined label */
2321 case C_USTATIC
: /* undefined static */
2322 case C_LINE
: /* line # reformatted as symbol table entry */
2323 case C_ALIAS
: /* duplicate tag */
2324 case C_HIDDEN
: /* ext symbol in dmert public lib */
2327 fprintf (stderr
, "Unrecognized storage class %d (assuming debugging)\n for %s symbol `%s'\n",
2328 src
->u
.syment
.n_sclass
, dst
->symbol
.section
->name
,
2331 dst
->symbol
.flags
= BSF_DEBUGGING
;
2332 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2336 /* BFD_ASSERT(dst->symbol.flags != 0);*/
2340 dst
->symbol
.udata
.i
= 0;
2341 dst
->lineno
= (alent
*) NULL
;
2342 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
2344 number_of_symbols
++;
2345 } /* walk the native symtab */
2346 } /* bfdize the native symtab */
2348 obj_symbols (abfd
) = cached_area
;
2349 obj_raw_syments (abfd
) = native_symbols
;
2351 bfd_get_symcount (abfd
) = number_of_symbols
;
2352 obj_convert (abfd
) = table_ptr
;
2353 /* Slurp the line tables for each section too */
2359 coff_slurp_line_table (abfd
, p
);
2364 } /* coff_slurp_symbol_table() */
2366 /* Check whether a symbol is globally visible. This is used by the
2367 COFF backend linker code in cofflink.c, since a couple of targets
2368 have globally visible symbols which are not class C_EXT. This
2369 function need not handle the case of n_class == C_EXT. */
2371 #undef OTHER_GLOBAL_CLASS
2374 #define OTHER_GLOBAL_CLASS C_LEAFEXT
2378 #define OTHER_GLOBAL_CLASS C_HIDEXT
2381 #ifdef OTHER_GLOBAL_CLASS
2384 coff_sym_is_global (abfd
, syment
)
2386 struct internal_syment
*syment
;
2388 if (syment
->n_sclass
== OTHER_GLOBAL_CLASS
)
2393 #undef OTHER_GLOBAL_CLASS
2395 #else /* ! defined (OTHER_GLOBAL_CLASS) */
2397 /* sym_is_global should not be defined if it has nothing to do. */
2399 #define coff_sym_is_global 0
2401 #endif /* ! defined (OTHER_GLOBAL_CLASS) */
2407 Coff relocations are easily transformed into the internal BFD form
2410 Reading a coff relocation table is done in the following stages:
2412 o Read the entire coff relocation table into memory.
2414 o Process each relocation in turn; first swap it from the
2415 external to the internal form.
2417 o Turn the symbol referenced in the relocation's symbol index
2418 into a pointer into the canonical symbol table.
2419 This table is the same as the one returned by a call to
2420 @code{bfd_canonicalize_symtab}. The back end will call that
2421 routine and save the result if a canonicalization hasn't been done.
2423 o The reloc index is turned into a pointer to a howto
2424 structure, in a back end specific way. For instance, the 386
2425 and 960 use the @code{r_type} to directly produce an index
2426 into a howto table vector; the 88k subtracts a number from the
2427 @code{r_type} field and creates an addend field.
2433 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
2435 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
2436 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
2437 coffsym = (obj_symbols (abfd) \
2438 + (cache_ptr->sym_ptr_ptr - symbols)); \
2440 coffsym = coff_symbol_from (abfd, ptr); \
2441 if (coffsym != (coff_symbol_type *) NULL \
2442 && coffsym->native->u.syment.n_scnum == 0) \
2443 cache_ptr->addend = 0; \
2444 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
2445 && ptr->section != (asection *) NULL) \
2446 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
2448 cache_ptr->addend = 0; \
2453 coff_slurp_reloc_table (abfd
, asect
, symbols
)
2458 RELOC
*native_relocs
;
2459 arelent
*reloc_cache
;
2464 if (asect
->relocation
)
2466 if (asect
->reloc_count
== 0)
2468 if (asect
->flags
& SEC_CONSTRUCTOR
)
2470 if (!coff_slurp_symbol_table (abfd
))
2473 (RELOC
*) buy_and_read (abfd
,
2477 asect
->reloc_count
));
2478 reloc_cache
= (arelent
*)
2479 bfd_alloc (abfd
, (size_t) (asect
->reloc_count
* sizeof (arelent
)));
2481 if (reloc_cache
== NULL
)
2483 bfd_set_error (bfd_error_no_memory
);
2488 for (idx
= 0; idx
< asect
->reloc_count
; idx
++)
2490 #ifdef RELOC_PROCESSING
2491 struct internal_reloc dst
;
2492 struct external_reloc
*src
;
2494 cache_ptr
= reloc_cache
+ idx
;
2495 src
= native_relocs
+ idx
;
2496 coff_swap_reloc_in (abfd
, src
, &dst
);
2498 RELOC_PROCESSING (cache_ptr
, &dst
, symbols
, abfd
, asect
);
2500 struct internal_reloc dst
;
2502 struct external_reloc
*src
;
2504 cache_ptr
= reloc_cache
+ idx
;
2505 src
= native_relocs
+ idx
;
2507 coff_swap_reloc_in (abfd
, src
, &dst
);
2510 cache_ptr
->address
= dst
.r_vaddr
;
2512 if (dst
.r_symndx
!= -1)
2514 /* @@ Should never be greater than count of symbols! */
2515 if (dst
.r_symndx
>= obj_conv_table_size (abfd
))
2517 cache_ptr
->sym_ptr_ptr
= symbols
+ obj_convert (abfd
)[dst
.r_symndx
];
2518 ptr
= *(cache_ptr
->sym_ptr_ptr
);
2522 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
2526 /* The symbols definitions that we have read in have been
2527 relocated as if their sections started at 0. But the offsets
2528 refering to the symbols in the raw data have not been
2529 modified, so we have to have a negative addend to compensate.
2531 Note that symbols which used to be common must be left alone */
2533 /* Calculate any reloc addend by looking at the symbol */
2534 CALC_ADDEND (abfd
, ptr
, dst
, cache_ptr
);
2536 cache_ptr
->address
-= asect
->vma
;
2537 /* !! cache_ptr->section = (asection *) NULL;*/
2539 /* Fill in the cache_ptr->howto field from dst.r_type */
2540 RTYPE2HOWTO (cache_ptr
, &dst
);
2545 asect
->relocation
= reloc_cache
;
2549 #ifndef coff_rtype_to_howto
2552 /* Get the howto structure for a reloc. This is only used if the file
2553 including this one defines coff_relocate_section to be
2554 _bfd_coff_generic_relocate_section, so it is OK if it does not
2555 always work. It is the responsibility of the including file to
2556 make sure it is reasonable if it is needed. */
2558 static reloc_howto_type
*coff_rtype_to_howto
2559 PARAMS ((bfd
*, asection
*, struct internal_reloc
*,
2560 struct coff_link_hash_entry
*, struct internal_syment
*,
2564 static reloc_howto_type
*
2565 coff_rtype_to_howto (abfd
, sec
, rel
, h
, sym
, addendp
)
2568 struct internal_reloc
*rel
;
2569 struct coff_link_hash_entry
*h
;
2570 struct internal_syment
*sym
;
2575 RTYPE2HOWTO (&genrel
, rel
);
2576 return genrel
.howto
;
2579 #else /* ! defined (RTYPE2HOWTO) */
2581 #define coff_rtype_to_howto NULL
2583 #endif /* ! defined (RTYPE2HOWTO) */
2584 #endif /* ! defined (coff_rtype_to_howto) */
2586 /* This is stupid. This function should be a boolean predicate. */
2588 coff_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
2594 arelent
*tblptr
= section
->relocation
;
2595 unsigned int count
= 0;
2598 if (section
->flags
& SEC_CONSTRUCTOR
)
2600 /* this section has relocs made up by us, they are not in the
2601 file, so take them out of their chain and place them into
2602 the data area provided */
2603 arelent_chain
*chain
= section
->constructor_chain
;
2604 for (count
= 0; count
< section
->reloc_count
; count
++)
2606 *relptr
++ = &chain
->relent
;
2607 chain
= chain
->next
;
2613 if (! coff_slurp_reloc_table (abfd
, section
, symbols
))
2616 tblptr
= section
->relocation
;
2618 for (; count
++ < section
->reloc_count
;)
2619 *relptr
++ = tblptr
++;
2624 return section
->reloc_count
;
2629 coff_sym_filepos (abfd
)
2632 return obj_sym_filepos (abfd
);
2636 #ifndef coff_reloc16_estimate
2637 #define coff_reloc16_estimate dummy_reloc16_estimate
2640 dummy_reloc16_estimate (abfd
, input_section
, reloc
, shrink
, link_info
)
2642 asection
*input_section
;
2644 unsigned int shrink
;
2645 struct bfd_link_info
*link_info
;
2652 #ifndef coff_reloc16_extra_cases
2653 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
2654 /* This works even if abort is not declared in any header file. */
2656 dummy_reloc16_extra_cases (abfd
, link_info
, link_order
, reloc
, data
, src_ptr
,
2659 struct bfd_link_info
*link_info
;
2660 struct bfd_link_order
*link_order
;
2663 unsigned int *src_ptr
;
2664 unsigned int *dst_ptr
;
2666 fprintf (stderr
, "%s\n", reloc
->howto
->name
);
2671 /* If coff_relocate_section is defined, we can use the optimized COFF
2672 backend linker. Otherwise we must continue to use the old linker. */
2673 #ifdef coff_relocate_section
2674 #ifndef coff_bfd_link_hash_table_create
2675 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
2677 #ifndef coff_bfd_link_add_symbols
2678 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
2680 #ifndef coff_bfd_final_link
2681 #define coff_bfd_final_link _bfd_coff_final_link
2683 #else /* ! defined (coff_relocate_section) */
2684 #define coff_relocate_section NULL
2685 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
2686 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
2687 #define coff_bfd_final_link _bfd_generic_final_link
2688 #endif /* ! defined (coff_relocate_section) */
2690 #ifndef coff_adjust_symndx
2691 #define coff_adjust_symndx NULL
2694 static CONST bfd_coff_backend_data bfd_coff_std_swap_table
=
2696 coff_swap_aux_in
, coff_swap_sym_in
, coff_swap_lineno_in
,
2697 coff_swap_aux_out
, coff_swap_sym_out
,
2698 coff_swap_lineno_out
, coff_swap_reloc_out
,
2699 coff_swap_filehdr_out
, coff_swap_aouthdr_out
,
2700 coff_swap_scnhdr_out
,
2701 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
,
2702 #ifdef COFF_LONG_FILENAMES
2707 coff_swap_filehdr_in
, coff_swap_aouthdr_in
, coff_swap_scnhdr_in
,
2708 coff_swap_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
2709 coff_mkobject_hook
, styp_to_sec_flags
, coff_make_section_hook
,
2710 coff_set_alignment_hook
, coff_slurp_symbol_table
, symname_in_debug_hook
,
2711 coff_reloc16_extra_cases
, coff_reloc16_estimate
,
2712 coff_sym_is_global
, coff_compute_section_file_positions
,
2713 coff_relocate_section
, coff_rtype_to_howto
, coff_adjust_symndx
2716 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
2717 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
2718 #define coff_get_section_contents _bfd_generic_get_section_contents
2720 #define coff_bfd_copy_private_section_data \
2721 _bfd_generic_bfd_copy_private_section_data
2722 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
2724 #ifndef coff_bfd_is_local_label
2725 #define coff_bfd_is_local_label bfd_generic_is_local_label
2728 /* The reloc lookup routine must be supplied by each individual COFF
2730 #ifndef coff_bfd_reloc_type_lookup
2731 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
2734 #define coff_bfd_get_relocated_section_contents \
2735 bfd_generic_get_relocated_section_contents
2736 #define coff_bfd_relax_section bfd_generic_relax_section