1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright 1990, 91, 92, 93, 94, 95, 96, 1997 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"
312 #define STRING_SIZE_SIZE (4)
314 /* void warning(); */
317 * Return a word with STYP_* (scnhdr.s_flags) flags set to represent the
318 * incoming SEC_* flags. The inverse of this function is styp_to_sec_flags().
319 * NOTE: If you add to/change this routine, you should mirror the changes
320 * in styp_to_sec_flags().
323 sec_to_styp_flags (sec_name
, sec_flags
)
324 CONST
char *sec_name
;
329 if (!strcmp (sec_name
, _TEXT
))
331 styp_flags
= STYP_TEXT
;
333 else if (!strcmp (sec_name
, _DATA
))
335 styp_flags
= STYP_DATA
;
337 else if (!strcmp (sec_name
, _BSS
))
339 styp_flags
= STYP_BSS
;
342 else if (!strcmp (sec_name
, _COMMENT
))
344 styp_flags
= STYP_INFO
;
345 #endif /* _COMMENT */
348 else if (!strcmp (sec_name
, _LIB
))
350 styp_flags
= STYP_LIB
;
354 else if (!strcmp (sec_name
, _LIT
))
356 styp_flags
= STYP_LIT
;
359 else if (!strcmp (sec_name
, ".debug"))
362 styp_flags
= STYP_DEBUG
;
364 styp_flags
= STYP_INFO
;
367 else if (!strncmp (sec_name
, ".stab", 5))
369 styp_flags
= STYP_INFO
;
372 else if (!strcmp (sec_name
, ".edata"))
374 styp_flags
= STYP_DATA
;
378 else if (!strcmp (sec_name
, _PAD
))
380 styp_flags
= STYP_PAD
;
382 else if (!strcmp (sec_name
, _LOADER
))
384 styp_flags
= STYP_LOADER
;
387 /* Try and figure out what it should be */
388 else if (sec_flags
& SEC_CODE
)
390 styp_flags
= STYP_TEXT
;
392 else if (sec_flags
& SEC_DATA
)
394 styp_flags
= STYP_DATA
;
396 else if (sec_flags
& SEC_READONLY
)
398 #ifdef STYP_LIT /* 29k readonly text/data section */
399 styp_flags
= STYP_LIT
;
401 styp_flags
= STYP_TEXT
;
402 #endif /* STYP_LIT */
404 else if (sec_flags
& SEC_LOAD
)
406 styp_flags
= STYP_TEXT
;
408 else if (sec_flags
& SEC_ALLOC
)
410 styp_flags
= STYP_BSS
;
414 if ((sec_flags
& (SEC_NEVER_LOAD
| SEC_COFF_SHARED_LIBRARY
)) != 0)
415 styp_flags
|= STYP_NOLOAD
;
419 if (sec_flags
& SEC_LINK_ONCE
)
420 styp_flags
|= IMAGE_SCN_LNK_COMDAT
;
426 * Return a word with SEC_* flags set to represent the incoming
427 * STYP_* flags (from scnhdr.s_flags). The inverse of this
428 * function is sec_to_styp_flags().
429 * NOTE: If you add to/change this routine, you should mirror the changes
430 * in sec_to_styp_flags().
433 styp_to_sec_flags (abfd
, hdr
, name
)
438 struct internal_scnhdr
*internal_s
= (struct internal_scnhdr
*) hdr
;
439 long styp_flags
= internal_s
->s_flags
;
440 flagword sec_flags
= 0;
443 if (styp_flags
& STYP_NOLOAD
)
445 sec_flags
|= SEC_NEVER_LOAD
;
447 #endif /* STYP_NOLOAD */
449 /* For 386 COFF, at least, an unloadable text or data section is
450 actually a shared library section. */
451 if (styp_flags
& STYP_TEXT
)
453 if (sec_flags
& SEC_NEVER_LOAD
)
454 sec_flags
|= SEC_CODE
| SEC_COFF_SHARED_LIBRARY
;
456 sec_flags
|= SEC_CODE
| SEC_LOAD
| SEC_ALLOC
;
458 else if (styp_flags
& STYP_DATA
)
460 if (sec_flags
& SEC_NEVER_LOAD
)
461 sec_flags
|= SEC_DATA
| SEC_COFF_SHARED_LIBRARY
;
463 sec_flags
|= SEC_DATA
| SEC_LOAD
| SEC_ALLOC
;
465 else if (styp_flags
& STYP_BSS
)
467 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
468 if (sec_flags
& SEC_NEVER_LOAD
)
469 sec_flags
|= SEC_ALLOC
| SEC_COFF_SHARED_LIBRARY
;
472 sec_flags
|= SEC_ALLOC
;
474 else if (styp_flags
& STYP_INFO
)
476 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
477 defined. coff_compute_section_file_positions uses
478 COFF_PAGE_SIZE to ensure that the low order bits of the
479 section VMA and the file offset match. If we don't know
480 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
481 and demand page loading of the file will fail. */
482 #ifdef COFF_PAGE_SIZE
483 sec_flags
|= SEC_DEBUGGING
;
486 else if (styp_flags
& STYP_PAD
)
490 else if (strcmp (name
, _TEXT
) == 0)
492 if (sec_flags
& SEC_NEVER_LOAD
)
493 sec_flags
|= SEC_CODE
| SEC_COFF_SHARED_LIBRARY
;
495 sec_flags
|= SEC_CODE
| SEC_LOAD
| SEC_ALLOC
;
497 else if (strcmp (name
, _DATA
) == 0)
499 if (sec_flags
& SEC_NEVER_LOAD
)
500 sec_flags
|= SEC_DATA
| SEC_COFF_SHARED_LIBRARY
;
502 sec_flags
|= SEC_DATA
| SEC_LOAD
| SEC_ALLOC
;
504 else if (strcmp (name
, _BSS
) == 0)
506 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
507 if (sec_flags
& SEC_NEVER_LOAD
)
508 sec_flags
|= SEC_ALLOC
| SEC_COFF_SHARED_LIBRARY
;
511 sec_flags
|= SEC_ALLOC
;
513 else if (strcmp (name
, ".debug") == 0
515 || strcmp (name
, _COMMENT
) == 0
517 || strncmp (name
, ".stab", 5) == 0)
519 #ifdef COFF_PAGE_SIZE
520 sec_flags
|= SEC_DEBUGGING
;
524 else if (strcmp (name
, _LIB
) == 0)
528 else if (strcmp (name
, _LIT
) == 0)
530 sec_flags
= SEC_LOAD
| SEC_ALLOC
| SEC_READONLY
;
535 sec_flags
|= SEC_ALLOC
| SEC_LOAD
;
538 #ifdef STYP_LIT /* A29k readonly text/data section type */
539 if ((styp_flags
& STYP_LIT
) == STYP_LIT
)
541 sec_flags
= (SEC_LOAD
| SEC_ALLOC
| SEC_READONLY
);
543 #endif /* STYP_LIT */
544 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
545 if (styp_flags
& STYP_OTHER_LOAD
)
547 sec_flags
= (SEC_LOAD
| SEC_ALLOC
);
549 #endif /* STYP_SDATA */
552 if (styp_flags
& IMAGE_SCN_LNK_REMOVE
)
553 sec_flags
|= SEC_EXCLUDE
;
555 if (styp_flags
& IMAGE_SCN_LNK_COMDAT
)
557 sec_flags
|= SEC_LINK_ONCE
;
559 /* Unfortunately, the PE format stores essential information in
560 the symbol table, of all places. We need to extract that
561 information now, so that objdump and the linker will know how
562 to handle the section without worrying about the symbols. We
563 can't call slurp_symtab, because the linker doesn't want the
566 if (_bfd_coff_get_external_symbols (abfd
))
568 bfd_byte
*esym
, *esymend
;
570 esym
= (bfd_byte
*) obj_coff_external_syms (abfd
);
571 esymend
= esym
+ obj_raw_syment_count (abfd
) * SYMESZ
;
573 while (esym
< esymend
)
575 struct internal_syment isym
;
577 bfd_coff_swap_sym_in (abfd
, (PTR
) esym
, (PTR
) &isym
);
579 if (sizeof (internal_s
->s_name
) > SYMNMLEN
)
581 /* This case implies that the matching symbol name
582 will be in the string table. */
586 if (isym
.n_sclass
== C_STAT
587 && isym
.n_type
== T_NULL
588 && isym
.n_numaux
== 1)
590 char buf
[SYMNMLEN
+ 1];
593 symname
= _bfd_coff_internal_syment_name (abfd
, &isym
, buf
);
597 if (strcmp (name
, symname
) == 0)
599 union internal_auxent aux
;
601 /* This is the section symbol. */
603 bfd_coff_swap_aux_in (abfd
, (PTR
) (esym
+ SYMESZ
),
604 isym
.n_type
, isym
.n_sclass
,
605 0, isym
.n_numaux
, (PTR
) &aux
);
607 switch (aux
.x_scn
.x_comdat
)
609 case IMAGE_COMDAT_SELECT_NODUPLICATES
:
610 sec_flags
|= SEC_LINK_DUPLICATES_ONE_ONLY
;
614 case IMAGE_COMDAT_SELECT_ANY
:
615 sec_flags
|= SEC_LINK_DUPLICATES_DISCARD
;
618 case IMAGE_COMDAT_SELECT_SAME_SIZE
:
619 sec_flags
|= SEC_LINK_DUPLICATES_SAME_SIZE
;
622 case IMAGE_COMDAT_SELECT_EXACT_MATCH
:
623 sec_flags
|= SEC_LINK_DUPLICATES_SAME_CONTENTS
;
626 case IMAGE_COMDAT_SELECT_ASSOCIATIVE
:
627 /* FIXME: This is not currently implemented. */
628 sec_flags
|= SEC_LINK_DUPLICATES_DISCARD
;
636 esym
+= (isym
.n_numaux
+ 1) * SYMESZ
;
645 #define get_index(symbol) ((symbol)->udata.i)
649 bfd_coff_backend_data
653 Special entry points for gdb to swap in coff symbol table parts:
656 . void (*_bfd_coff_swap_aux_in) PARAMS ((
665 . void (*_bfd_coff_swap_sym_in) PARAMS ((
670 . void (*_bfd_coff_swap_lineno_in) PARAMS ((
676 Special entry points for gas to swap out coff parts:
678 . unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
687 . unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
692 . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
697 . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
702 . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
707 . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
712 . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
718 Special entry points for generic COFF routines to call target
719 dependent COFF routines:
721 . unsigned int _bfd_filhsz;
722 . unsigned int _bfd_aoutsz;
723 . unsigned int _bfd_scnhsz;
724 . unsigned int _bfd_symesz;
725 . unsigned int _bfd_auxesz;
726 . unsigned int _bfd_relsz;
727 . unsigned int _bfd_linesz;
728 . boolean _bfd_coff_long_filenames;
729 . boolean _bfd_coff_long_section_names;
730 . void (*_bfd_coff_swap_filehdr_in) PARAMS ((
734 . void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
738 . void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
742 . void (*_bfd_coff_swap_reloc_in) PARAMS ((
746 . boolean (*_bfd_coff_bad_format_hook) PARAMS ((
748 . PTR internal_filehdr));
749 . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
751 . PTR internal_filehdr));
752 . PTR (*_bfd_coff_mkobject_hook) PARAMS ((
754 . PTR internal_filehdr,
755 . PTR internal_aouthdr));
756 . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
758 . PTR internal_scnhdr,
759 . const char *name));
760 . void (*_bfd_set_alignment_hook) PARAMS ((
763 . PTR internal_scnhdr));
764 . boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
766 . boolean (*_bfd_coff_symname_in_debug) PARAMS ((
768 . struct internal_syment *sym));
769 . boolean (*_bfd_coff_pointerize_aux_hook) PARAMS ((
771 . combined_entry_type *table_base,
772 . combined_entry_type *symbol,
773 . unsigned int indaux,
774 . combined_entry_type *aux));
775 . boolean (*_bfd_coff_print_aux) PARAMS ((
778 . combined_entry_type *table_base,
779 . combined_entry_type *symbol,
780 . combined_entry_type *aux,
781 . unsigned int indaux));
782 . void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
784 . struct bfd_link_info *link_info,
785 . struct bfd_link_order *link_order,
788 . unsigned int *src_ptr,
789 . unsigned int *dst_ptr));
790 . int (*_bfd_coff_reloc16_estimate) PARAMS ((
792 . asection *input_section,
794 . unsigned int shrink,
795 . struct bfd_link_info *link_info));
796 . boolean (*_bfd_coff_sym_is_global) PARAMS ((
798 . struct internal_syment *));
799 . boolean (*_bfd_coff_compute_section_file_positions) PARAMS ((
801 . boolean (*_bfd_coff_start_final_link) PARAMS ((
803 . struct bfd_link_info *info));
804 . boolean (*_bfd_coff_relocate_section) PARAMS ((
806 . struct bfd_link_info *info,
808 . asection *input_section,
809 . bfd_byte *contents,
810 . struct internal_reloc *relocs,
811 . struct internal_syment *syms,
812 . asection **sections));
813 . reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS ((
816 . struct internal_reloc *rel,
817 . struct coff_link_hash_entry *h,
818 . struct internal_syment *sym,
819 . bfd_vma *addendp));
820 . boolean (*_bfd_coff_adjust_symndx) PARAMS ((
822 . struct bfd_link_info *info,
825 . struct internal_reloc *reloc,
826 . boolean *adjustedp));
827 . boolean (*_bfd_coff_link_add_one_symbol) PARAMS ((
828 . struct bfd_link_info *info,
834 . const char *string,
837 . struct bfd_link_hash_entry **hashp));
839 .} bfd_coff_backend_data;
841 .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
843 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
844 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
846 .#define bfd_coff_swap_sym_in(a,e,i) \
847 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
849 .#define bfd_coff_swap_lineno_in(a,e,i) \
850 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
852 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
853 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
855 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
856 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
858 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
859 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
861 .#define bfd_coff_swap_sym_out(abfd, i,o) \
862 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
864 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
865 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
867 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
868 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
870 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
871 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
873 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
874 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
875 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
876 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
877 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
878 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
879 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
880 .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
881 .#define bfd_coff_long_section_names(abfd) \
882 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
883 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
884 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
886 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
887 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
889 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
890 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
892 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
893 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
895 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
896 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
898 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
899 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
900 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
901 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
903 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\
904 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name))
906 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
907 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
909 .#define bfd_coff_slurp_symbol_table(abfd)\
910 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
912 .#define bfd_coff_symname_in_debug(abfd, sym)\
913 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
915 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
916 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
917 . (abfd, file, base, symbol, aux, indaux))
919 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
920 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
921 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
923 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
924 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
925 . (abfd, section, reloc, shrink, link_info))
927 .#define bfd_coff_sym_is_global(abfd, sym)\
928 . ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
931 .#define bfd_coff_compute_section_file_positions(abfd)\
932 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
935 .#define bfd_coff_start_final_link(obfd, info)\
936 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
938 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
939 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
940 . (obfd, info, ibfd, o, con, rel, isyms, secs))
941 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
942 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
943 . (abfd, sec, rel, h, sym, addendp))
944 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
945 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
946 . (obfd, info, ibfd, sec, rel, adjustedp))
947 .#define bfd_coff_link_add_one_symbol(info,abfd,name,flags,section,value,string,cp,coll,hashp)\
948 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
949 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
953 /* See whether the magic number matches. */
956 coff_bad_format_hook (abfd
, filehdr
)
960 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
962 if (BADMAG (*internal_f
))
965 /* if the optional header is NULL or not the correct size then
966 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
967 and Intel 960 readwrite headers (I960WRMAGIC) is that the
968 optional header is of a different size.
970 But the mips keeps extra stuff in it's opthdr, so dont check
974 #if defined(M88) || defined(I960)
975 if (internal_f
->f_opthdr
!= 0 && AOUTSZ
!= internal_f
->f_opthdr
)
983 initialize a section structure with information peculiar to this
984 particular implementation of coff
988 coff_new_section_hook (abfd
, section
)
992 section
->alignment_power
= COFF_DEFAULT_SECTION_ALIGNMENT_POWER
;
995 if (xcoff_data (abfd
)->text_align_power
!= 0
996 && strcmp (bfd_get_section_name (abfd
, section
), ".text") == 0)
997 section
->alignment_power
= xcoff_data (abfd
)->text_align_power
;
998 if (xcoff_data (abfd
)->data_align_power
!= 0
999 && strcmp (bfd_get_section_name (abfd
, section
), ".data") == 0)
1000 section
->alignment_power
= xcoff_data (abfd
)->data_align_power
;
1003 /* Allocate aux records for section symbols, to store size and
1006 @@ The 10 is a guess at a plausible maximum number of aux entries
1007 (but shouldn't be a constant). */
1008 coffsymbol (section
->symbol
)->native
=
1009 (combined_entry_type
*) bfd_zalloc (abfd
,
1010 sizeof (combined_entry_type
) * 10);
1012 /* The .stab section must be aligned to 2**2 at most, because
1013 otherwise there may be gaps in the section which gdb will not
1014 know how to interpret. Examining the section name is a hack, but
1015 that is also how gdb locates the section.
1016 We need to handle the .ctors and .dtors sections similarly, to
1017 avoid introducing null words in the tables. */
1018 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER
> 2
1019 && (strncmp (section
->name
, ".stab", 5) == 0
1020 || strcmp (section
->name
, ".ctors") == 0
1021 || strcmp (section
->name
, ".dtors") == 0))
1022 section
->alignment_power
= 2;
1024 /* Similarly, the .stabstr section must be aligned to 2**0 at most. */
1025 if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER
> 0
1026 && strncmp (section
->name
, ".stabstr", 8) == 0)
1027 section
->alignment_power
= 0;
1034 /* Set the alignment of a BFD section. */
1037 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1042 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1045 for (i
= 0; i
< 32; i
++)
1046 if ((1 << i
) >= hdr
->s_align
)
1048 section
->alignment_power
= i
;
1054 /* a couple of macros to help setting the alignment power field */
1055 #define ALIGN_SET(field,x,y) \
1056 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
1058 section->alignment_power = y;\
1061 #define ELIFALIGN_SET(field,x,y) \
1062 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
1064 section->alignment_power = y;\
1068 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1073 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1075 ALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_64BYTES
, 6)
1076 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_32BYTES
, 5)
1077 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_16BYTES
, 4)
1078 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_8BYTES
, 3)
1079 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_4BYTES
, 2)
1080 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_2BYTES
, 1)
1081 ELIFALIGN_SET (hdr
->s_flags
, IMAGE_SCN_ALIGN_1BYTES
, 0)
1083 #ifdef POWERPC_LE_PE
1084 if (strcmp (section
->name
, ".idata$2") == 0)
1086 section
->alignment_power
= 0;
1088 else if (strcmp (section
->name
, ".idata$3") == 0)
1090 section
->alignment_power
= 0;
1092 else if (strcmp (section
->name
, ".idata$4") == 0)
1094 section
->alignment_power
= 2;
1096 else if (strcmp (section
->name
, ".idata$5") == 0)
1098 section
->alignment_power
= 2;
1100 else if (strcmp (section
->name
, ".idata$6") == 0)
1102 section
->alignment_power
= 1;
1104 else if (strcmp (section
->name
, ".reloc") == 0)
1106 section
->alignment_power
= 1;
1108 else if (strncmp (section
->name
, ".stab", 5) == 0)
1110 section
->alignment_power
= 2;
1114 #ifdef COFF_IMAGE_WITH_PE
1115 /* In a PE image file, the s_paddr field holds the virtual size of a
1116 section, while the s_size field holds the raw size. */
1117 if (hdr
->s_paddr
!= 0)
1119 if (coff_section_data (abfd
, section
) == NULL
)
1121 section
->used_by_bfd
=
1122 (PTR
) bfd_zalloc (abfd
, sizeof (struct coff_section_tdata
));
1123 if (section
->used_by_bfd
== NULL
)
1125 /* FIXME: Return error. */
1129 if (pei_section_data (abfd
, section
) == NULL
)
1131 coff_section_data (abfd
, section
)->tdata
=
1132 (PTR
) bfd_zalloc (abfd
, sizeof (struct pei_section_tdata
));
1133 if (coff_section_data (abfd
, section
)->tdata
== NULL
)
1135 /* FIXME: Return error. */
1139 pei_section_data (abfd
, section
)->virt_size
= hdr
->s_paddr
;
1145 #undef ELIFALIGN_SET
1147 #else /* ! COFF_WITH_PE */
1150 /* We grossly abuse this function to handle XCOFF overflow headers.
1151 When we see one, we correct the reloc and line number counts in the
1152 real header, and remove the section we just created. */
1155 coff_set_alignment_hook (abfd
, section
, scnhdr
)
1160 struct internal_scnhdr
*hdr
= (struct internal_scnhdr
*) scnhdr
;
1164 if ((hdr
->s_flags
& STYP_OVRFLO
) == 0)
1167 real_sec
= coff_section_from_bfd_index (abfd
, hdr
->s_nreloc
);
1168 if (real_sec
== NULL
)
1171 real_sec
->reloc_count
= hdr
->s_paddr
;
1172 real_sec
->lineno_count
= hdr
->s_vaddr
;
1174 for (ps
= &abfd
->sections
; *ps
!= NULL
; ps
= &(*ps
)->next
)
1179 --abfd
->section_count
;
1185 #else /* ! RS6000COFF_C */
1187 #define coff_set_alignment_hook \
1188 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1190 #endif /* ! RS6000COFF_C */
1191 #endif /* ! COFF_WITH_PE */
1194 #ifndef coff_mkobject
1196 coff_mkobject (abfd
)
1199 coff_data_type
*coff
;
1201 abfd
->tdata
.coff_obj_data
= (struct coff_tdata
*) bfd_zalloc (abfd
, sizeof (coff_data_type
));
1202 if (abfd
->tdata
.coff_obj_data
== 0)
1204 coff
= coff_data (abfd
);
1205 coff
->symbols
= (coff_symbol_type
*) NULL
;
1206 coff
->conversion_table
= (unsigned int *) NULL
;
1207 coff
->raw_syments
= (struct coff_ptr_struct
*) NULL
;
1208 coff
->relocbase
= 0;
1209 coff
->local_toc_sym_map
= 0;
1211 /* make_abs_section(abfd);*/
1217 /* Create the COFF backend specific information. */
1218 #ifndef coff_mkobject_hook
1220 coff_mkobject_hook (abfd
, filehdr
, aouthdr
)
1225 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1226 coff_data_type
*coff
;
1228 if (coff_mkobject (abfd
) == false)
1231 coff
= coff_data (abfd
);
1233 coff
->sym_filepos
= internal_f
->f_symptr
;
1235 /* These members communicate important constants about the symbol
1236 table to GDB's symbol-reading code. These `constants'
1237 unfortunately vary among coff implementations... */
1238 coff
->local_n_btmask
= N_BTMASK
;
1239 coff
->local_n_btshft
= N_BTSHFT
;
1240 coff
->local_n_tmask
= N_TMASK
;
1241 coff
->local_n_tshift
= N_TSHIFT
;
1242 coff
->local_symesz
= SYMESZ
;
1243 coff
->local_auxesz
= AUXESZ
;
1244 coff
->local_linesz
= LINESZ
;
1246 obj_raw_syment_count (abfd
) =
1247 obj_conv_table_size (abfd
) =
1248 internal_f
->f_nsyms
;
1251 if ((internal_f
->f_flags
& F_SHROBJ
) != 0)
1252 abfd
->flags
|= DYNAMIC
;
1253 if (aouthdr
!= NULL
&& internal_f
->f_opthdr
>= AOUTSZ
)
1255 struct internal_aouthdr
*internal_a
=
1256 (struct internal_aouthdr
*) aouthdr
;
1257 struct xcoff_tdata
*xcoff
;
1259 xcoff
= xcoff_data (abfd
);
1260 xcoff
->full_aouthdr
= true;
1261 xcoff
->toc
= internal_a
->o_toc
;
1262 xcoff
->sntoc
= internal_a
->o_sntoc
;
1263 xcoff
->snentry
= internal_a
->o_snentry
;
1264 xcoff
->text_align_power
= internal_a
->o_algntext
;
1265 xcoff
->data_align_power
= internal_a
->o_algndata
;
1266 xcoff
->modtype
= internal_a
->o_modtype
;
1267 xcoff
->cputype
= internal_a
->o_cputype
;
1268 xcoff
->maxdata
= internal_a
->o_maxdata
;
1269 xcoff
->maxstack
= internal_a
->o_maxstack
;
1277 /* Determine the machine architecture and type. FIXME: This is target
1278 dependent because the magic numbers are defined in the target
1279 dependent header files. But there is no particular need for this.
1280 If the magic numbers were moved to a separate file, this function
1281 would be target independent and would also be much more successful
1282 at linking together COFF files for different architectures. */
1285 coff_set_arch_mach_hook (abfd
, filehdr
)
1290 enum bfd_architecture arch
;
1291 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
1294 switch (internal_f
->f_magic
)
1298 arch
= bfd_arch_powerpc
;
1299 machine
= 0; /* what does this mean? (krk) */
1305 case I386AIXMAGIC
: /* Danbury PS/2 AIX C Compiler */
1306 case LYNXCOFFMAGIC
: /* shadows the m68k Lynx number below, sigh */
1307 arch
= bfd_arch_i386
;
1311 #ifdef A29K_MAGIC_BIG
1312 case A29K_MAGIC_BIG
:
1313 case A29K_MAGIC_LITTLE
:
1314 arch
= bfd_arch_a29k
;
1320 arch
= bfd_arch_arm
;
1327 #ifdef MC68KBCSMAGIC
1330 #ifdef APOLLOM68KMAGIC
1331 case APOLLOM68KMAGIC
:
1333 #ifdef LYNXCOFFMAGIC
1336 arch
= bfd_arch_m68k
;
1344 arch
= bfd_arch_m88k
;
1350 arch
= bfd_arch_z8k
;
1351 switch (internal_f
->f_flags
& F_MACHMASK
)
1354 machine
= bfd_mach_z8001
;
1357 machine
= bfd_mach_z8002
;
1366 arch
= bfd_arch_i860
;
1373 arch
= bfd_arch_i960
;
1374 switch (F_I960TYPE
& internal_f
->f_flags
)
1378 machine
= bfd_mach_i960_core
;
1381 machine
= bfd_mach_i960_kb_sb
;
1384 machine
= bfd_mach_i960_mc
;
1387 machine
= bfd_mach_i960_xa
;
1390 machine
= bfd_mach_i960_ca
;
1393 machine
= bfd_mach_i960_ka_sa
;
1396 machine
= bfd_mach_i960_jx
;
1399 machine
= bfd_mach_i960_hx
;
1413 if (xcoff_data (abfd
)->cputype
!= -1)
1414 cputype
= xcoff_data (abfd
)->cputype
& 0xff;
1417 /* We did not get a value from the a.out header. If the
1418 file has not been stripped, we may be able to get the
1419 architecture information from the first symbol, if it
1420 is a .file symbol. */
1421 if (obj_raw_syment_count (abfd
) == 0)
1425 bfd_byte buf
[SYMESZ
];
1426 struct internal_syment sym
;
1428 if (bfd_seek (abfd
, obj_sym_filepos (abfd
), SEEK_SET
) != 0
1429 || bfd_read (buf
, 1, SYMESZ
, abfd
) != SYMESZ
)
1431 coff_swap_sym_in (abfd
, (PTR
) buf
, (PTR
) &sym
);
1432 if (sym
.n_sclass
== C_FILE
)
1433 cputype
= sym
.n_type
& 0xff;
1439 /* FIXME: We don't handle all cases here. */
1445 /* PowerPC Macs use the same magic numbers as RS/6000
1446 (because that's how they were bootstrapped originally),
1447 but they are always PowerPC architecture. */
1448 arch
= bfd_arch_powerpc
;
1451 arch
= bfd_arch_rs6000
;
1453 #endif /* POWERMAC */
1457 arch
= bfd_arch_powerpc
;
1460 case 2: /* 64 bit PowerPC */
1461 arch
= bfd_arch_powerpc
;
1465 arch
= bfd_arch_powerpc
;
1469 arch
= bfd_arch_rs6000
;
1479 arch
= bfd_arch_we32k
;
1486 arch
= bfd_arch_h8300
;
1487 machine
= bfd_mach_h8300
;
1488 /* !! FIXME this probably isn't the right place for this */
1489 abfd
->flags
|= BFD_IS_RELAXABLE
;
1495 arch
= bfd_arch_h8300
;
1496 machine
= bfd_mach_h8300h
;
1497 /* !! FIXME this probably isn't the right place for this */
1498 abfd
->flags
|= BFD_IS_RELAXABLE
;
1504 arch
= bfd_arch_h8300
;
1505 machine
= bfd_mach_h8300s
;
1506 /* !! FIXME this probably isn't the right place for this */
1507 abfd
->flags
|= BFD_IS_RELAXABLE
;
1511 #ifdef SH_ARCH_MAGIC_BIG
1512 case SH_ARCH_MAGIC_BIG
:
1513 case SH_ARCH_MAGIC_LITTLE
:
1521 arch
= bfd_arch_h8500
;
1528 #ifdef LYNXCOFFMAGIC
1531 arch
= bfd_arch_sparc
;
1536 #ifdef TIC80_ARCH_MAGIC
1537 case TIC80_ARCH_MAGIC
:
1538 arch
= bfd_arch_tic80
;
1542 default: /* Unreadable input file type */
1543 arch
= bfd_arch_obscure
;
1547 bfd_default_set_arch_mach (abfd
, arch
, machine
);
1551 #ifdef SYMNAME_IN_DEBUG
1554 symname_in_debug_hook (abfd
, sym
)
1556 struct internal_syment
*sym
;
1558 return SYMNAME_IN_DEBUG (sym
) ? true : false;
1563 #define symname_in_debug_hook \
1564 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
1570 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
1572 static boolean coff_pointerize_aux_hook
1573 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
1574 unsigned int, combined_entry_type
*));
1578 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
1580 combined_entry_type
*table_base
;
1581 combined_entry_type
*symbol
;
1582 unsigned int indaux
;
1583 combined_entry_type
*aux
;
1585 int class = symbol
->u
.syment
.n_sclass
;
1587 if ((class == C_EXT
|| class == C_HIDEXT
)
1588 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
1590 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) == XTY_LD
)
1592 aux
->u
.auxent
.x_csect
.x_scnlen
.p
=
1593 table_base
+ aux
->u
.auxent
.x_csect
.x_scnlen
.l
;
1594 aux
->fix_scnlen
= 1;
1597 /* Return true to indicate that the caller should not do any
1598 further work on this auxent. */
1602 /* Return false to indicate that this auxent should be handled by
1610 /* We don't want to pointerize bal entries. */
1612 static boolean coff_pointerize_aux_hook
1613 PARAMS ((bfd
*, combined_entry_type
*, combined_entry_type
*,
1614 unsigned int, combined_entry_type
*));
1618 coff_pointerize_aux_hook (abfd
, table_base
, symbol
, indaux
, aux
)
1620 combined_entry_type
*table_base
;
1621 combined_entry_type
*symbol
;
1622 unsigned int indaux
;
1623 combined_entry_type
*aux
;
1625 /* Return true if we don't want to pointerize this aux entry, which
1626 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
1628 && (symbol
->u
.syment
.n_sclass
== C_LEAFPROC
1629 || symbol
->u
.syment
.n_sclass
== C_LEAFSTAT
1630 || symbol
->u
.syment
.n_sclass
== C_LEAFEXT
));
1635 #define coff_pointerize_aux_hook 0
1638 #endif /* ! RS6000COFF_C */
1640 /* Print an aux entry. This returns true if it has printed it. */
1642 static boolean coff_print_aux
1643 PARAMS ((bfd
*, FILE *, combined_entry_type
*, combined_entry_type
*,
1644 combined_entry_type
*, unsigned int));
1647 coff_print_aux (abfd
, file
, table_base
, symbol
, aux
, indaux
)
1650 combined_entry_type
*table_base
;
1651 combined_entry_type
*symbol
;
1652 combined_entry_type
*aux
;
1653 unsigned int indaux
;
1656 if ((symbol
->u
.syment
.n_sclass
== C_EXT
1657 || symbol
->u
.syment
.n_sclass
== C_HIDEXT
)
1658 && indaux
+ 1 == symbol
->u
.syment
.n_numaux
)
1660 /* This is a csect entry. */
1661 fprintf (file
, "AUX ");
1662 if (SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
) != XTY_LD
)
1664 BFD_ASSERT (! aux
->fix_scnlen
);
1665 fprintf (file
, "val %5ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
1669 fprintf (file
, "indx ");
1670 if (! aux
->fix_scnlen
)
1671 fprintf (file
, "%4ld", aux
->u
.auxent
.x_csect
.x_scnlen
.l
);
1673 fprintf (file
, "%4ld",
1674 (long) (aux
->u
.auxent
.x_csect
.x_scnlen
.p
- table_base
));
1677 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
1678 aux
->u
.auxent
.x_csect
.x_parmhash
,
1679 (unsigned int) aux
->u
.auxent
.x_csect
.x_snhash
,
1680 SMTYP_SMTYP (aux
->u
.auxent
.x_csect
.x_smtyp
),
1681 SMTYP_ALIGN (aux
->u
.auxent
.x_csect
.x_smtyp
),
1682 (unsigned int) aux
->u
.auxent
.x_csect
.x_smclas
,
1683 aux
->u
.auxent
.x_csect
.x_stab
,
1684 (unsigned int) aux
->u
.auxent
.x_csect
.x_snstab
);
1689 /* Return false to indicate that no special action was taken. */
1697 To write relocations, the back end steps though the
1698 canonical relocation table and create an
1699 @code{internal_reloc}. The symbol index to use is removed from
1700 the @code{offset} field in the symbol table supplied. The
1701 address comes directly from the sum of the section base
1702 address and the relocation offset; the type is dug directly
1703 from the howto field. Then the @code{internal_reloc} is
1704 swapped into the shape of an @code{external_reloc} and written
1711 static int compare_arelent_ptr
PARAMS ((const PTR
, const PTR
));
1713 /* AUX's ld wants relocations to be sorted */
1715 compare_arelent_ptr (x
, y
)
1719 const arelent
**a
= (const arelent
**) x
;
1720 const arelent
**b
= (const arelent
**) y
;
1721 bfd_size_type aadr
= (*a
)->address
;
1722 bfd_size_type badr
= (*b
)->address
;
1724 return (aadr
< badr
? -1 : badr
< aadr
? 1 : 0);
1727 #endif /* TARG_AUX */
1730 coff_write_relocs (abfd
, first_undef
)
1736 for (s
= abfd
->sections
; s
!= (asection
*) NULL
; s
= s
->next
)
1739 struct external_reloc dst
;
1745 /* sort relocations before we write them out */
1746 p
= (arelent
**) bfd_malloc (s
->reloc_count
* sizeof (arelent
*));
1747 if (p
== NULL
&& s
->reloc_count
> 0)
1749 memcpy (p
, s
->orelocation
, s
->reloc_count
* sizeof (arelent
*));
1750 qsort (p
, s
->reloc_count
, sizeof (arelent
*), compare_arelent_ptr
);
1753 if (bfd_seek (abfd
, s
->rel_filepos
, SEEK_SET
) != 0)
1755 for (i
= 0; i
< s
->reloc_count
; i
++)
1757 struct internal_reloc n
;
1759 memset ((PTR
) & n
, 0, sizeof (n
));
1761 /* Now we've renumbered the symbols we know where the
1762 undefined symbols live in the table. Check the reloc
1763 entries for symbols who's output bfd isn't the right one.
1764 This is because the symbol was undefined (which means
1765 that all the pointers are never made to point to the same
1766 place). This is a bad thing,'cause the symbols attached
1767 to the output bfd are indexed, so that the relocation
1768 entries know which symbol index they point to. So we
1769 have to look up the output symbol here. */
1771 if (q
->sym_ptr_ptr
[0]->the_bfd
!= abfd
)
1774 const char *sname
= q
->sym_ptr_ptr
[0]->name
;
1775 asymbol
**outsyms
= abfd
->outsymbols
;
1776 for (i
= first_undef
; outsyms
[i
]; i
++)
1778 const char *intable
= outsyms
[i
]->name
;
1779 if (strcmp (intable
, sname
) == 0) {
1780 /* got a hit, so repoint the reloc */
1781 q
->sym_ptr_ptr
= outsyms
+ i
;
1787 n
.r_vaddr
= q
->address
+ s
->vma
;
1790 /* The 29k const/consth reloc pair is a real kludge. The consth
1791 part doesn't have a symbol; it has an offset. So rebuilt
1793 if (q
->howto
->type
== R_IHCONST
)
1794 n
.r_symndx
= q
->addend
;
1799 if (q
->sym_ptr_ptr
== bfd_abs_section_ptr
->symbol_ptr_ptr
)
1800 /* This is a relocation relative to the absolute symbol. */
1804 n
.r_symndx
= get_index ((*(q
->sym_ptr_ptr
)));
1805 /* Take notice if the symbol reloc points to a symbol
1806 we don't have in our symbol table. What should we
1808 if (n
.r_symndx
> obj_conv_table_size (abfd
))
1813 #ifdef SWAP_OUT_RELOC_OFFSET
1814 n
.r_offset
= q
->addend
;
1818 /* Work out reloc type from what is required */
1819 SELECT_RELOC (n
, q
->howto
);
1821 n
.r_type
= q
->howto
->type
;
1823 coff_swap_reloc_out (abfd
, &n
, &dst
);
1824 if (bfd_write ((PTR
) & dst
, 1, RELSZ
, abfd
) != RELSZ
)
1837 /* Set flags and magic number of a coff file from architecture and machine
1838 type. Result is true if we can represent the arch&type, false if not. */
1841 coff_set_flags (abfd
, magicp
, flagsp
)
1844 unsigned short *flagsp
;
1846 switch (bfd_get_arch (abfd
))
1851 switch (bfd_get_mach (abfd
))
1853 case bfd_mach_z8001
:
1856 case bfd_mach_z8002
:
1870 *magicp
= I960ROMAGIC
;
1872 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
1873 I960RWMAGIC); FIXME???
1875 switch (bfd_get_mach (abfd
))
1877 case bfd_mach_i960_core
:
1880 case bfd_mach_i960_kb_sb
:
1883 case bfd_mach_i960_mc
:
1886 case bfd_mach_i960_xa
:
1889 case bfd_mach_i960_ca
:
1892 case bfd_mach_i960_ka_sa
:
1895 case bfd_mach_i960_jx
:
1898 case bfd_mach_i960_hx
:
1909 /* start-sanitize-tic80 */
1910 #ifdef TIC80_ARCH_MAGIC
1911 case bfd_arch_tic80
:
1912 *magicp
= TIC80_ARCH_MAGIC
;
1915 /* end-sanitize-tic80 */
1922 case bfd_arch_powerpc
:
1929 *magicp
= I386MAGIC
;
1931 /* Just overwrite the usual value if we're doing Lynx. */
1932 *magicp
= LYNXCOFFMAGIC
;
1939 *magicp
= I860MAGIC
;
1945 #ifdef APOLLOM68KMAGIC
1946 *magicp
= APOLLO_COFF_VERSION_NUMBER
;
1948 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
1949 #ifdef NAMES_HAVE_UNDERSCORE
1950 *magicp
= MC68KBCSMAGIC
;
1952 *magicp
= MC68MAGIC
;
1956 /* Just overwrite the usual value if we're doing Lynx. */
1957 *magicp
= LYNXCOFFMAGIC
;
1965 *magicp
= MC88OMAGIC
;
1970 case bfd_arch_h8300
:
1971 switch (bfd_get_mach (abfd
))
1973 case bfd_mach_h8300
:
1974 *magicp
= H8300MAGIC
;
1976 case bfd_mach_h8300h
:
1977 *magicp
= H8300HMAGIC
;
1979 case bfd_mach_h8300s
:
1980 *magicp
= H8300SMAGIC
;
1986 #ifdef SH_ARCH_MAGIC_BIG
1988 if (bfd_big_endian (abfd
))
1989 *magicp
= SH_ARCH_MAGIC_BIG
;
1991 *magicp
= SH_ARCH_MAGIC_LITTLE
;
1997 case bfd_arch_sparc
:
1998 *magicp
= SPARCMAGIC
;
2000 /* Just overwrite the usual value if we're doing Lynx. */
2001 *magicp
= LYNXCOFFMAGIC
;
2008 case bfd_arch_h8500
:
2009 *magicp
= H8500MAGIC
;
2013 #ifdef A29K_MAGIC_BIG
2015 if (bfd_big_endian (abfd
))
2016 *magicp
= A29K_MAGIC_BIG
;
2018 *magicp
= A29K_MAGIC_LITTLE
;
2024 case bfd_arch_we32k
:
2025 *magicp
= WE32KMAGIC
;
2031 case bfd_arch_rs6000
:
2033 case bfd_arch_powerpc
:
2035 *magicp
= U802TOCMAGIC
;
2040 default: /* Unknown architecture */
2041 /* return false; -- fall through to "return false" below, to avoid
2042 "statement never reached" errors on the one below. */
2051 coff_set_arch_mach (abfd
, arch
, machine
)
2053 enum bfd_architecture arch
;
2054 unsigned long machine
;
2057 unsigned short dummy2
;
2059 if (! bfd_default_set_arch_mach (abfd
, arch
, machine
))
2062 if (arch
!= bfd_arch_unknown
&&
2063 coff_set_flags (abfd
, &dummy1
, &dummy2
) != true)
2064 return false; /* We can't represent this type */
2066 return true; /* We're easy ... */
2070 /* Calculate the file position for each section. */
2073 coff_compute_section_file_positions (abfd
)
2077 asection
*previous
= (asection
*) NULL
;
2078 file_ptr sofar
= FILHSZ
;
2079 boolean align_adjust
;
2087 /* On XCOFF, if we have symbols, set up the .debug section. */
2088 if (bfd_get_symcount (abfd
) > 0)
2091 bfd_size_type i
, symcount
;
2095 symcount
= bfd_get_symcount (abfd
);
2096 for (symp
= abfd
->outsymbols
, i
= 0; i
< symcount
; symp
++, i
++)
2098 coff_symbol_type
*cf
;
2100 cf
= coff_symbol_from (abfd
, *symp
);
2102 && cf
->native
!= NULL
2103 && SYMNAME_IN_DEBUG (&cf
->native
->u
.syment
))
2107 len
= strlen (bfd_asymbol_name (*symp
));
2116 dsec
= bfd_make_section_old_way (abfd
, ".debug");
2119 dsec
->_raw_size
= sz
;
2120 dsec
->flags
|= SEC_HAS_CONTENTS
;
2125 #ifdef COFF_IMAGE_WITH_PE
2127 if (coff_data (abfd
)->link_info
)
2129 page_size
= pe_data (abfd
)->pe_opthdr
.FileAlignment
;
2132 page_size
= PE_DEF_FILE_ALIGNMENT
;
2134 #ifdef COFF_PAGE_SIZE
2135 int page_size
= COFF_PAGE_SIZE
;
2139 if (bfd_get_start_address (abfd
))
2141 /* A start address may have been added to the original file. In this
2142 case it will need an optional header to record it. */
2143 abfd
->flags
|= EXEC_P
;
2146 if (abfd
->flags
& EXEC_P
)
2149 else if (xcoff_data (abfd
)->full_aouthdr
)
2152 sofar
+= SMALL_AOUTSZ
;
2155 sofar
+= abfd
->section_count
* SCNHSZ
;
2158 /* XCOFF handles overflows in the reloc and line number count fields
2159 by allocating a new section header to hold the correct counts. */
2160 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2161 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2165 align_adjust
= false;
2166 for (current
= abfd
->sections
, count
= 1;
2167 current
!= (asection
*) NULL
;
2168 current
= current
->next
, ++count
)
2170 current
->target_index
= count
;
2172 /* Only deal with sections which have contents */
2173 if (!(current
->flags
& SEC_HAS_CONTENTS
))
2176 /* Align the sections in the file to the same boundary on
2177 which they are aligned in virtual memory. I960 doesn't
2178 do this (FIXME) so we can stay in sync with Intel. 960
2179 doesn't yet page from files... */
2181 if ((abfd
->flags
& EXEC_P
) != 0)
2183 /* make sure this section is aligned on the right boundary - by
2184 padding the previous section up if necessary */
2187 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
2188 if (previous
!= (asection
*) NULL
)
2190 previous
->_raw_size
+= sofar
- old_sofar
;
2196 /* In demand paged files the low order bits of the file offset
2197 must match the low order bits of the virtual address. */
2198 #ifdef COFF_PAGE_SIZE
2199 if ((abfd
->flags
& D_PAGED
) != 0
2200 && (current
->flags
& SEC_ALLOC
) != 0)
2201 sofar
+= (current
->vma
- sofar
) % page_size
;
2203 current
->filepos
= sofar
;
2205 #ifdef COFF_IMAGE_WITH_PE
2206 /* With PE we have to pad each section to be a multiple of its
2207 page size too, and remember both sizes. */
2209 if (coff_section_data (abfd
, current
) == NULL
)
2211 current
->used_by_bfd
=
2212 (PTR
) bfd_zalloc (abfd
, sizeof (struct coff_section_tdata
));
2213 if (current
->used_by_bfd
== NULL
)
2216 if (pei_section_data (abfd
, current
) == NULL
)
2218 coff_section_data (abfd
, current
)->tdata
=
2219 (PTR
) bfd_zalloc (abfd
, sizeof (struct pei_section_tdata
));
2220 if (coff_section_data (abfd
, current
)->tdata
== NULL
)
2223 if (pei_section_data (abfd
, current
)->virt_size
== 0)
2224 pei_section_data (abfd
, current
)->virt_size
= current
->_raw_size
;
2226 current
->_raw_size
= (current
->_raw_size
+ page_size
-1) & -page_size
;
2229 sofar
+= current
->_raw_size
;
2232 /* make sure that this section is of the right size too */
2233 if ((abfd
->flags
& EXEC_P
) == 0)
2235 bfd_size_type old_size
;
2237 old_size
= current
->_raw_size
;
2238 current
->_raw_size
= BFD_ALIGN (current
->_raw_size
,
2239 1 << current
->alignment_power
);
2240 align_adjust
= current
->_raw_size
!= old_size
;
2241 sofar
+= current
->_raw_size
- old_size
;
2246 sofar
= BFD_ALIGN (sofar
, 1 << current
->alignment_power
);
2247 align_adjust
= sofar
!= old_sofar
;
2248 current
->_raw_size
+= sofar
- old_sofar
;
2253 /* Force .lib sections to start at zero. The vma is then
2254 incremented in coff_set_section_contents. This is right for
2256 if (strcmp (current
->name
, _LIB
) == 0)
2257 bfd_set_section_vma (abfd
, current
, 0);
2263 /* It is now safe to write to the output file. If we needed an
2264 alignment adjustment for the last section, then make sure that
2265 there is a byte at offset sofar. If there are no symbols and no
2266 relocs, then nothing follows the last section. If we don't force
2267 the last byte out, then the file may appear to be truncated. */
2273 if (bfd_seek (abfd
, sofar
- 1, SEEK_SET
) != 0
2274 || bfd_write (&b
, 1, 1, abfd
) != 1)
2278 /* Make sure the relocations are aligned. We don't need to make
2279 sure that this byte exists, because it will only matter if there
2280 really are relocs. */
2281 sofar
= BFD_ALIGN (sofar
, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER
);
2283 obj_relocbase (abfd
) = sofar
;
2284 abfd
->output_has_begun
= true;
2291 /* This can never work, because it is called too late--after the
2292 section positions have been set. I can't figure out what it is
2293 for, so I am going to disable it--Ian Taylor 20 March 1996. */
2295 /* If .file, .text, .data, .bss symbols are missing, add them. */
2296 /* @@ Should we only be adding missing symbols, or overriding the aux
2297 values for existing section symbols? */
2299 coff_add_missing_symbols (abfd
)
2302 unsigned int nsyms
= bfd_get_symcount (abfd
);
2303 asymbol
**sympp
= abfd
->outsymbols
;
2306 int need_text
= 1, need_data
= 1, need_bss
= 1, need_file
= 1;
2308 for (i
= 0; i
< nsyms
; i
++)
2310 coff_symbol_type
*csym
= coff_symbol_from (abfd
, sympp
[i
]);
2314 /* only do this if there is a coff representation of the input
2316 if (csym
->native
&& csym
->native
->u
.syment
.n_sclass
== C_FILE
)
2321 name
= csym
->symbol
.name
;
2324 if (!strcmp (name
, _TEXT
))
2327 else if (!strcmp (name
, ".wtext"))
2330 else if (!strcmp (name
, _DATA
))
2332 else if (!strcmp (name
, _BSS
))
2336 /* Now i == bfd_get_symcount (abfd). */
2337 /* @@ For now, don't deal with .file symbol. */
2340 if (!need_text
&& !need_data
&& !need_bss
&& !need_file
)
2342 nsyms
+= need_text
+ need_data
+ need_bss
+ need_file
;
2343 sympp2
= (asymbol
**) bfd_alloc (abfd
, nsyms
* sizeof (asymbol
*));
2346 memcpy (sympp2
, sympp
, i
* sizeof (asymbol
*));
2349 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
2353 sympp2
[i
++] = coff_section_symbol (abfd
, _TEXT
);
2355 sympp2
[i
++] = coff_section_symbol (abfd
, _DATA
);
2357 sympp2
[i
++] = coff_section_symbol (abfd
, _BSS
);
2358 BFD_ASSERT (i
== nsyms
);
2359 bfd_set_symtab (abfd
, sympp2
, nsyms
);
2368 coff_write_object_contents (abfd
)
2372 boolean hasrelocs
= false;
2373 boolean haslinno
= false;
2375 file_ptr reloc_base
;
2376 file_ptr lineno_base
;
2378 unsigned long reloc_size
= 0;
2379 unsigned long lnno_size
= 0;
2380 boolean long_section_names
;
2381 asection
*text_sec
= NULL
;
2382 asection
*data_sec
= NULL
;
2383 asection
*bss_sec
= NULL
;
2384 struct internal_filehdr internal_f
;
2385 struct internal_aouthdr internal_a
;
2386 #ifdef COFF_LONG_SECTION_NAMES
2387 size_t string_size
= STRING_SIZE_SIZE
;
2390 bfd_set_error (bfd_error_system_call
);
2392 /* Make a pass through the symbol table to count line number entries and
2393 put them into the correct asections */
2395 lnno_size
= coff_count_linenumbers (abfd
) * LINESZ
;
2397 if (abfd
->output_has_begun
== false)
2399 if (! coff_compute_section_file_positions (abfd
))
2403 reloc_base
= obj_relocbase (abfd
);
2405 /* Work out the size of the reloc and linno areas */
2407 for (current
= abfd
->sections
; current
!= NULL
; current
=
2409 reloc_size
+= current
->reloc_count
* RELSZ
;
2411 lineno_base
= reloc_base
+ reloc_size
;
2412 sym_base
= lineno_base
+ lnno_size
;
2414 /* Indicate in each section->line_filepos its actual file address */
2415 for (current
= abfd
->sections
; current
!= NULL
; current
=
2418 if (current
->lineno_count
)
2420 current
->line_filepos
= lineno_base
;
2421 current
->moving_line_filepos
= lineno_base
;
2422 lineno_base
+= current
->lineno_count
* LINESZ
;
2426 current
->line_filepos
= 0;
2428 if (current
->reloc_count
)
2430 current
->rel_filepos
= reloc_base
;
2431 reloc_base
+= current
->reloc_count
* RELSZ
;
2435 current
->rel_filepos
= 0;
2439 /* Write section headers to the file. */
2440 internal_f
.f_nscns
= 0;
2442 if ((abfd
->flags
& EXEC_P
) != 0)
2443 scn_base
= FILHSZ
+ AOUTSZ
;
2448 if (xcoff_data (abfd
)->full_aouthdr
)
2451 scn_base
+= SMALL_AOUTSZ
;
2455 if (bfd_seek (abfd
, scn_base
, SEEK_SET
) != 0)
2458 long_section_names
= false;
2459 for (current
= abfd
->sections
;
2461 current
= current
->next
)
2463 struct internal_scnhdr section
;
2466 /* If we've got a .reloc section, remember. */
2468 #ifdef COFF_IMAGE_WITH_PE
2469 if (strcmp (current
->name
, ".reloc") == 0)
2471 pe_data (abfd
)->has_reloc_section
= 1;
2476 internal_f
.f_nscns
++;
2478 strncpy (section
.s_name
, current
->name
, SCNNMLEN
);
2480 #ifdef COFF_LONG_SECTION_NAMES
2481 /* Handle long section names as in PE. This must be compatible
2482 with the code in coff_write_symbols. */
2486 len
= strlen (current
->name
);
2489 memset (section
.s_name
, 0, SCNNMLEN
);
2490 sprintf (section
.s_name
, "/%lu", (unsigned long) string_size
);
2491 string_size
+= len
+ 1;
2492 long_section_names
= true;
2498 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
2499 Ian Taylor <ian@cygnus.com>. */
2500 if (strcmp (current
->name
, _LIB
) == 0)
2501 section
.s_vaddr
= 0;
2504 section
.s_vaddr
= current
->vma
;
2505 section
.s_paddr
= current
->lma
;
2506 section
.s_size
= current
->_raw_size
;
2509 section
.s_paddr
= 0;
2511 #ifdef COFF_IMAGE_WITH_PE
2512 /* Reminder: s_paddr holds the virtual size of the section. */
2513 if (coff_section_data (abfd
, current
) != NULL
2514 && pei_section_data (abfd
, current
) != NULL
)
2515 section
.s_paddr
= pei_section_data (abfd
, current
)->virt_size
;
2517 section
.s_paddr
= 0;
2521 If this section has no size or is unloadable then the scnptr
2524 if (current
->_raw_size
== 0 ||
2525 (current
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
2527 section
.s_scnptr
= 0;
2531 section
.s_scnptr
= current
->filepos
;
2533 section
.s_relptr
= current
->rel_filepos
;
2534 section
.s_lnnoptr
= current
->line_filepos
;
2535 section
.s_nreloc
= current
->reloc_count
;
2536 section
.s_nlnno
= current
->lineno_count
;
2537 if (current
->reloc_count
!= 0)
2539 if (current
->lineno_count
!= 0)
2543 /* Indicate the use of an XCOFF overflow section header. */
2544 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2546 section
.s_nreloc
= 0xffff;
2547 section
.s_nlnno
= 0xffff;
2551 section
.s_flags
= sec_to_styp_flags (current
->name
, current
->flags
);
2553 if (!strcmp (current
->name
, _TEXT
))
2557 else if (!strcmp (current
->name
, _DATA
))
2561 else if (!strcmp (current
->name
, _BSS
))
2567 section
.s_align
= (current
->alignment_power
2568 ? 1 << current
->alignment_power
2573 #ifdef COFF_IMAGE_WITH_PE
2574 /* suppress output of the sections if they are null. ld includes
2575 the bss and data sections even if there is no size assigned
2576 to them. NT loader doesn't like it if these section headers are
2577 included if the sections themselves are not needed */
2578 if (section
.s_size
== 0)
2579 internal_f
.f_nscns
--;
2584 if (coff_swap_scnhdr_out (abfd
, §ion
, &buff
) == 0
2585 || bfd_write ((PTR
) (&buff
), 1, SCNHSZ
, abfd
) != SCNHSZ
)
2590 /* PE stores COMDAT section information in the symbol table. If
2591 this section is supposed to have some COMDAT info, track down
2592 the symbol in the symbol table and modify it. */
2593 if ((current
->flags
& SEC_LINK_ONCE
) != 0)
2595 unsigned int i
, count
;
2597 coff_symbol_type
*csym
;
2599 count
= bfd_get_symcount (abfd
);
2600 for (i
= 0, psym
= abfd
->outsymbols
; i
< count
; i
++, psym
++)
2602 /* Here *PSYM is the section symbol for CURRENT. */
2604 if (strcmp ((*psym
)->name
, current
->name
) == 0)
2606 csym
= coff_symbol_from (abfd
, *psym
);
2608 || csym
->native
== NULL
2609 || csym
->native
->u
.syment
.n_numaux
< 1
2610 || csym
->native
->u
.syment
.n_sclass
!= C_STAT
2611 || csym
->native
->u
.syment
.n_type
!= T_NULL
)
2618 Note that we might not if we're converting the file from
2619 some other object file format. */
2622 combined_entry_type
*aux
;
2624 /* We don't touch the x_checksum field. The
2625 x_associated field is not currently supported. */
2627 aux
= csym
->native
+ 1;
2628 switch (current
->flags
& SEC_LINK_DUPLICATES
)
2630 case SEC_LINK_DUPLICATES_DISCARD
:
2631 aux
->u
.auxent
.x_scn
.x_comdat
= IMAGE_COMDAT_SELECT_ANY
;
2634 case SEC_LINK_DUPLICATES_ONE_ONLY
:
2635 aux
->u
.auxent
.x_scn
.x_comdat
=
2636 IMAGE_COMDAT_SELECT_NODUPLICATES
;
2639 case SEC_LINK_DUPLICATES_SAME_SIZE
:
2640 aux
->u
.auxent
.x_scn
.x_comdat
=
2641 IMAGE_COMDAT_SELECT_SAME_SIZE
;
2644 case SEC_LINK_DUPLICATES_SAME_CONTENTS
:
2645 aux
->u
.auxent
.x_scn
.x_comdat
=
2646 IMAGE_COMDAT_SELECT_EXACT_MATCH
;
2651 #endif /* COFF_WITH_PE */
2655 /* XCOFF handles overflows in the reloc and line number count fields
2656 by creating a new section header to hold the correct values. */
2657 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
)
2659 if (current
->reloc_count
>= 0xffff || current
->lineno_count
>= 0xffff)
2661 struct internal_scnhdr scnhdr
;
2664 internal_f
.f_nscns
++;
2665 strncpy (&(scnhdr
.s_name
[0]), current
->name
, 8);
2666 scnhdr
.s_paddr
= current
->reloc_count
;
2667 scnhdr
.s_vaddr
= current
->lineno_count
;
2669 scnhdr
.s_scnptr
= 0;
2670 scnhdr
.s_relptr
= current
->rel_filepos
;
2671 scnhdr
.s_lnnoptr
= current
->line_filepos
;
2672 scnhdr
.s_nreloc
= current
->target_index
;
2673 scnhdr
.s_nlnno
= current
->target_index
;
2674 scnhdr
.s_flags
= STYP_OVRFLO
;
2675 if (coff_swap_scnhdr_out (abfd
, &scnhdr
, &buff
) == 0
2676 || bfd_write ((PTR
) &buff
, 1, SCNHSZ
, abfd
) != SCNHSZ
)
2682 /* OK, now set up the filehdr... */
2684 /* Don't include the internal abs section in the section count */
2687 We will NOT put a fucking timestamp in the header here. Every time you
2688 put it back, I will come in and take it out again. I'm sorry. This
2689 field does not belong here. We fill it with a 0 so it compares the
2690 same but is not a reasonable time. -- gnu@cygnus.com
2692 internal_f
.f_timdat
= 0;
2694 internal_f
.f_flags
= 0;
2696 if (abfd
->flags
& EXEC_P
)
2697 internal_f
.f_opthdr
= AOUTSZ
;
2700 internal_f
.f_opthdr
= 0;
2702 if (xcoff_data (abfd
)->full_aouthdr
)
2703 internal_f
.f_opthdr
= AOUTSZ
;
2705 internal_f
.f_opthdr
= SMALL_AOUTSZ
;
2710 internal_f
.f_flags
|= F_RELFLG
;
2712 internal_f
.f_flags
|= F_LNNO
;
2713 if (abfd
->flags
& EXEC_P
)
2714 internal_f
.f_flags
|= F_EXEC
;
2716 /* FIXME: this is wrong for PPC_PE! */
2717 if (bfd_little_endian (abfd
))
2718 internal_f
.f_flags
|= F_AR32WR
;
2720 internal_f
.f_flags
|= F_AR32W
;
2723 FIXME, should do something about the other byte orders and
2728 if ((abfd
->flags
& DYNAMIC
) != 0)
2729 internal_f
.f_flags
|= F_SHROBJ
;
2730 if (bfd_get_section_by_name (abfd
, _LOADER
) != NULL
)
2731 internal_f
.f_flags
|= F_DYNLOAD
;
2734 memset (&internal_a
, 0, sizeof internal_a
);
2736 /* Set up architecture-dependent stuff */
2739 unsigned int magic
= 0;
2740 unsigned short flags
= 0;
2741 coff_set_flags (abfd
, &magic
, &flags
);
2742 internal_f
.f_magic
= magic
;
2743 internal_f
.f_flags
|= flags
;
2744 /* ...and the "opt"hdr... */
2747 #ifdef ULTRA3 /* NYU's machine */
2748 /* FIXME: This is a bogus check. I really want to see if there
2749 * is a .shbss or a .shdata section, if so then set the magic
2750 * number to indicate a shared data executable.
2752 if (internal_f
.f_nscns
>= 7)
2753 internal_a
.magic
= SHMAGIC
; /* Shared magic */
2756 internal_a
.magic
= NMAGIC
; /* Assume separate i/d */
2757 #define __A_MAGIC_SET__
2760 internal_a
.magic
= TIC80_ARCH_MAGIC
;
2761 #define __A_MAGIC_SET__
2764 /* FIXME: What are the a.out magic numbers for the i860? */
2765 internal_a
.magic
= 0;
2766 #define __A_MAGIC_SET__
2769 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
2770 #define __A_MAGIC_SET__
2773 #define __A_MAGIC_SET__
2774 internal_a
.magic
= PAGEMAGICBCS
;
2778 #define __A_MAGIC_SET__
2779 internal_a
.magic
= APOLLO_COFF_VERSION_NUMBER
;
2782 #if defined(M68) || defined(WE32K) || defined(M68K)
2783 #define __A_MAGIC_SET__
2785 internal_a
.magic
= LYNXCOFFMAGIC
;
2787 #if defined(TARG_AUX)
2788 internal_a
.magic
= (abfd
->flags
& D_PAGED
? PAGEMAGICPEXECPAGED
:
2789 abfd
->flags
& WP_TEXT
? PAGEMAGICPEXECSWAPPED
:
2790 PAGEMAGICEXECSWAPPED
);
2792 #if defined (PAGEMAGICPEXECPAGED)
2793 internal_a
.magic
= PAGEMAGICPEXECPAGED
;
2795 #endif /* TARG_AUX */
2797 #endif /* M68 || WE32K || M68K */
2800 #define __A_MAGIC_SET__
2801 internal_a
.magic
= ZMAGIC
;
2804 #define __A_MAGIC_SET__
2805 internal_a
.magic
= IMAGE_NT_OPTIONAL_HDR_MAGIC
;
2808 #define __A_MAGIC_SET__
2810 internal_a
.magic
= LYNXCOFFMAGIC
;
2812 internal_a
.magic
= ZMAGIC
;
2817 #define __A_MAGIC_SET__
2819 internal_a
.magic
= LYNXCOFFMAGIC
;
2824 #define __A_MAGIC_SET__
2825 internal_a
.magic
= (abfd
->flags
& D_PAGED
) ? RS6K_AOUTHDR_ZMAGIC
:
2826 (abfd
->flags
& WP_TEXT
) ? RS6K_AOUTHDR_NMAGIC
:
2827 RS6K_AOUTHDR_OMAGIC
;
2830 #ifndef __A_MAGIC_SET__
2831 #include "Your aouthdr magic number is not being set!"
2833 #undef __A_MAGIC_SET__
2837 /* FIXME: Does anybody ever set this to another value? */
2838 internal_a
.vstamp
= 0;
2840 /* Now should write relocs, strings, syms */
2841 obj_sym_filepos (abfd
) = sym_base
;
2843 if (bfd_get_symcount (abfd
) != 0)
2847 if (!coff_add_missing_symbols (abfd
))
2850 if (!coff_renumber_symbols (abfd
, &firstundef
))
2852 coff_mangle_symbols (abfd
);
2853 if (! coff_write_symbols (abfd
))
2855 if (! coff_write_linenumbers (abfd
))
2857 if (! coff_write_relocs (abfd
, firstundef
))
2860 #ifdef COFF_IMAGE_WITH_PE
2862 else if ((abfd
->flags
& EXEC_P
) != 0)
2866 /* PowerPC PE appears to require that all executable files be
2867 rounded up to the page size. */
2870 BFD_ALIGN (sym_base
, COFF_PAGE_SIZE
) - 1,
2872 || bfd_write (&b
, 1, 1, abfd
) != 1)
2878 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
2879 backend linker, and obj_raw_syment_count is not valid until after
2880 coff_write_symbols is called. */
2881 if (obj_raw_syment_count (abfd
) != 0)
2883 internal_f
.f_symptr
= sym_base
;
2885 /* AIX appears to require that F_RELFLG not be set if there are
2886 local symbols but no relocations. */
2887 internal_f
.f_flags
&=~ F_RELFLG
;
2892 if (long_section_names
)
2893 internal_f
.f_symptr
= sym_base
;
2895 internal_f
.f_symptr
= 0;
2896 internal_f
.f_flags
|= F_LSYMS
;
2901 internal_a
.tsize
= bfd_get_section_size_before_reloc (text_sec
);
2902 internal_a
.text_start
= internal_a
.tsize
? text_sec
->vma
: 0;
2906 internal_a
.dsize
= bfd_get_section_size_before_reloc (data_sec
);
2907 internal_a
.data_start
= internal_a
.dsize
? data_sec
->vma
: 0;
2911 internal_a
.bsize
= bfd_get_section_size_before_reloc (bss_sec
);
2912 if (internal_a
.bsize
&& bss_sec
->vma
< internal_a
.data_start
)
2913 internal_a
.data_start
= bss_sec
->vma
;
2916 internal_a
.entry
= bfd_get_start_address (abfd
);
2917 internal_f
.f_nsyms
= obj_raw_syment_count (abfd
);
2920 if (xcoff_data (abfd
)->full_aouthdr
)
2923 asection
*loader_sec
;
2925 internal_a
.vstamp
= 1;
2927 internal_a
.o_snentry
= xcoff_data (abfd
)->snentry
;
2928 if (internal_a
.o_snentry
== 0)
2929 internal_a
.entry
= (bfd_vma
) -1;
2931 if (text_sec
!= NULL
)
2933 internal_a
.o_sntext
= text_sec
->target_index
;
2934 internal_a
.o_algntext
= bfd_get_section_alignment (abfd
, text_sec
);
2938 internal_a
.o_sntext
= 0;
2939 internal_a
.o_algntext
= 0;
2941 if (data_sec
!= NULL
)
2943 internal_a
.o_sndata
= data_sec
->target_index
;
2944 internal_a
.o_algndata
= bfd_get_section_alignment (abfd
, data_sec
);
2948 internal_a
.o_sndata
= 0;
2949 internal_a
.o_algndata
= 0;
2951 loader_sec
= bfd_get_section_by_name (abfd
, ".loader");
2952 if (loader_sec
!= NULL
)
2953 internal_a
.o_snloader
= loader_sec
->target_index
;
2955 internal_a
.o_snloader
= 0;
2956 if (bss_sec
!= NULL
)
2957 internal_a
.o_snbss
= bss_sec
->target_index
;
2959 internal_a
.o_snbss
= 0;
2961 toc
= xcoff_data (abfd
)->toc
;
2962 internal_a
.o_toc
= toc
;
2963 internal_a
.o_sntoc
= xcoff_data (abfd
)->sntoc
;
2965 internal_a
.o_modtype
= xcoff_data (abfd
)->modtype
;
2966 if (xcoff_data (abfd
)->cputype
!= -1)
2967 internal_a
.o_cputype
= xcoff_data (abfd
)->cputype
;
2970 switch (bfd_get_arch (abfd
))
2972 case bfd_arch_rs6000
:
2973 internal_a
.o_cputype
= 4;
2975 case bfd_arch_powerpc
:
2976 if (bfd_get_mach (abfd
) == 0)
2977 internal_a
.o_cputype
= 3;
2979 internal_a
.o_cputype
= 1;
2985 internal_a
.o_maxstack
= xcoff_data (abfd
)->maxstack
;
2986 internal_a
.o_maxdata
= xcoff_data (abfd
)->maxdata
;
2990 /* now write them */
2991 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
2995 coff_swap_filehdr_out (abfd
, (PTR
) & internal_f
, (PTR
) buff
);
2996 if (bfd_write ((PTR
) buff
, 1, FILHSZ
, abfd
) != FILHSZ
)
2999 if (abfd
->flags
& EXEC_P
)
3001 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
3002 include/coff/pe.h sets AOUTSZ == sizeof(PEAOUTHDR)) */
3004 coff_swap_aouthdr_out (abfd
, (PTR
) & internal_a
, (PTR
) buff
);
3005 if (bfd_write ((PTR
) buff
, 1, AOUTSZ
, abfd
) != AOUTSZ
)
3014 /* XCOFF seems to always write at least a small a.out header. */
3015 coff_swap_aouthdr_out (abfd
, (PTR
) &internal_a
, (PTR
) &buff
);
3016 if (xcoff_data (abfd
)->full_aouthdr
)
3019 size
= SMALL_AOUTSZ
;
3020 if (bfd_write ((PTR
) &buff
, 1, size
, abfd
) != size
)
3029 coff_set_section_contents (abfd
, section
, location
, offset
, count
)
3034 bfd_size_type count
;
3036 if (abfd
->output_has_begun
== false) /* set by bfd.c handler */
3038 if (! coff_compute_section_file_positions (abfd
))
3042 #if defined(_LIB) && !defined(TARG_AUX)
3044 /* The physical address field of a .lib section is used to hold the
3045 number of shared libraries in the section. This code counts the
3046 number of sections being written, and increments the lma field
3049 I have found no documentation on the contents of this section.
3050 Experimentation indicates that the section contains zero or more
3051 records, each of which has the following structure:
3053 - a (four byte) word holding the length of this record, in words,
3054 - a word that always seems to be set to "2",
3055 - the path to a shared library, null-terminated and then padded
3056 to a whole word boundary.
3058 bfd_assert calls have been added to alert if an attempt is made
3059 to write a section which doesn't follow these assumptions. The
3060 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
3061 <robertl@arnet.com> (Thanks!).
3063 Gvran Uddeborg <gvran@uddeborg.pp.se> */
3065 if (strcmp (section
->name
, _LIB
) == 0)
3067 bfd_byte
*rec
, *recend
;
3069 rec
= (bfd_byte
*) location
;
3070 recend
= rec
+ count
;
3071 while (rec
< recend
)
3074 rec
+= bfd_get_32 (abfd
, rec
) * 4;
3077 BFD_ASSERT (rec
== recend
);
3082 /* Don't write out bss sections - one way to do this is to
3083 see if the filepos has not been set. */
3084 if (section
->filepos
== 0)
3087 if (bfd_seek (abfd
, (file_ptr
) (section
->filepos
+ offset
), SEEK_SET
) != 0)
3092 return (bfd_write (location
, 1, count
, abfd
) == count
) ? true : false;
3098 coff_close_and_cleanup (abfd
)
3101 if (!bfd_read_p (abfd
))
3102 switch (abfd
->format
)
3105 if (!_bfd_write_archive_contents (abfd
))
3109 if (!coff_write_object_contents (abfd
))
3113 bfd_set_error (bfd_error_invalid_operation
);
3117 /* We depend on bfd_close to free all the memory on the objalloc. */
3124 buy_and_read (abfd
, where
, seek_direction
, size
)
3130 PTR area
= (PTR
) bfd_alloc (abfd
, size
);
3133 if (bfd_seek (abfd
, where
, seek_direction
) != 0
3134 || bfd_read (area
, 1, size
, abfd
) != size
)
3137 } /* buy_and_read() */
3143 Creating the linenumber table is done by reading in the entire
3144 coff linenumber table, and creating another table for internal use.
3146 A coff linenumber table is structured so that each function
3147 is marked as having a line number of 0. Each line within the
3148 function is an offset from the first line in the function. The
3149 base of the line number information for the table is stored in
3150 the symbol associated with the function.
3152 The information is copied from the external to the internal
3153 table, and each symbol which marks a function is marked by
3156 How does this work ?
3161 coff_slurp_line_table (abfd
, asect
)
3165 LINENO
*native_lineno
;
3166 alent
*lineno_cache
;
3168 BFD_ASSERT (asect
->lineno
== (alent
*) NULL
);
3170 native_lineno
= (LINENO
*) buy_and_read (abfd
,
3171 asect
->line_filepos
,
3174 asect
->lineno_count
));
3176 (alent
*) bfd_alloc (abfd
, (size_t) ((asect
->lineno_count
+ 1) * sizeof (alent
)));
3177 if (lineno_cache
== NULL
)
3181 unsigned int counter
= 0;
3182 alent
*cache_ptr
= lineno_cache
;
3183 LINENO
*src
= native_lineno
;
3185 while (counter
< asect
->lineno_count
)
3187 struct internal_lineno dst
;
3188 coff_swap_lineno_in (abfd
, src
, &dst
);
3189 cache_ptr
->line_number
= dst
.l_lnno
;
3191 if (cache_ptr
->line_number
== 0)
3195 coff_symbol_type
*sym
;
3198 symndx
= dst
.l_addr
.l_symndx
;
3199 if (symndx
< 0 || symndx
>= obj_raw_syment_count (abfd
))
3201 (*_bfd_error_handler
)
3202 ("%s: warning: illegal symbol index %ld in line numbers",
3203 bfd_get_filename (abfd
), dst
.l_addr
.l_symndx
);
3207 /* FIXME: We should not be casting between ints and
3208 pointers like this. */
3209 sym
= ((coff_symbol_type
*)
3210 ((symndx
+ obj_raw_syments (abfd
))
3211 ->u
.syment
._n
._n_n
._n_zeroes
));
3212 cache_ptr
->u
.sym
= (asymbol
*) sym
;
3213 if (sym
->lineno
!= NULL
&& ! warned
)
3215 (*_bfd_error_handler
)
3216 ("%s: warning: duplicate line number information for `%s'",
3217 bfd_get_filename (abfd
),
3218 bfd_asymbol_name (&sym
->symbol
));
3220 sym
->lineno
= cache_ptr
;
3224 cache_ptr
->u
.offset
= dst
.l_addr
.l_paddr
3225 - bfd_section_vma (abfd
, asect
);
3226 } /* If no linenumber expect a symbol index */
3232 cache_ptr
->line_number
= 0;
3235 asect
->lineno
= lineno_cache
;
3236 /* FIXME, free native_lineno here, or use alloca or something. */
3241 coff_slurp_symbol_table (abfd
)
3244 combined_entry_type
*native_symbols
;
3245 coff_symbol_type
*cached_area
;
3246 unsigned int *table_ptr
;
3248 unsigned int number_of_symbols
= 0;
3250 if (obj_symbols (abfd
))
3253 /* Read in the symbol table */
3254 if ((native_symbols
= coff_get_normalized_symtab (abfd
)) == NULL
)
3259 /* Allocate enough room for all the symbols in cached form */
3260 cached_area
= ((coff_symbol_type
*)
3262 (obj_raw_syment_count (abfd
)
3263 * sizeof (coff_symbol_type
))));
3265 if (cached_area
== NULL
)
3267 table_ptr
= ((unsigned int *)
3269 (obj_raw_syment_count (abfd
)
3270 * sizeof (unsigned int))));
3272 if (table_ptr
== NULL
)
3276 coff_symbol_type
*dst
= cached_area
;
3277 unsigned int last_native_index
= obj_raw_syment_count (abfd
);
3278 unsigned int this_index
= 0;
3279 while (this_index
< last_native_index
)
3281 combined_entry_type
*src
= native_symbols
+ this_index
;
3282 table_ptr
[this_index
] = number_of_symbols
;
3283 dst
->symbol
.the_bfd
= abfd
;
3285 dst
->symbol
.name
= (char *) (src
->u
.syment
._n
._n_n
._n_offset
);
3286 /* We use the native name field to point to the cached field. */
3287 src
->u
.syment
._n
._n_n
._n_zeroes
= (long) dst
;
3288 dst
->symbol
.section
= coff_section_from_bfd_index (abfd
,
3289 src
->u
.syment
.n_scnum
);
3290 dst
->symbol
.flags
= 0;
3291 dst
->done_lineno
= false;
3293 switch (src
->u
.syment
.n_sclass
)
3298 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
3299 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
3300 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
3302 /* Fall through to next case */
3311 /* PE uses storage class 0x68 to denote a section symbol */
3313 /* PE uses storage class 0x67 for a weak external symbol. */
3316 if ((src
->u
.syment
.n_scnum
) == 0)
3318 if ((src
->u
.syment
.n_value
) == 0)
3320 dst
->symbol
.section
= bfd_und_section_ptr
;
3321 dst
->symbol
.value
= 0;
3325 dst
->symbol
.section
= bfd_com_section_ptr
;
3326 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3331 /* Base the value as an index from the base of the
3334 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
3335 dst
->symbol
.value
= (src
->u
.syment
.n_value
3336 - dst
->symbol
.section
->vma
);
3338 if (ISFCN ((src
->u
.syment
.n_type
)))
3340 /* A function ext does not go at the end of a
3342 dst
->symbol
.flags
|= BSF_NOT_AT_END
| BSF_FUNCTION
;
3347 /* A C_HIDEXT symbol is not global. */
3348 if (src
->u
.syment
.n_sclass
== C_HIDEXT
)
3349 dst
->symbol
.flags
= BSF_LOCAL
;
3350 /* A symbol with a csect entry should not go at the end. */
3351 if (src
->u
.syment
.n_numaux
> 0)
3352 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
3356 if (src
->u
.syment
.n_sclass
== C_NT_WEAK
)
3357 dst
->symbol
.flags
= BSF_WEAK
;
3362 case C_STAT
: /* static */
3364 case C_LEAFSTAT
: /* static leaf procedure */
3366 case C_LABEL
: /* label */
3367 if (src
->u
.syment
.n_scnum
== -2)
3368 dst
->symbol
.flags
= BSF_DEBUGGING
;
3370 dst
->symbol
.flags
= BSF_LOCAL
;
3372 /* Base the value as an index from the base of the
3373 section, if there is one. */
3374 if (dst
->symbol
.section
)
3375 dst
->symbol
.value
= (src
->u
.syment
.n_value
3376 - dst
->symbol
.section
->vma
);
3378 dst
->symbol
.value
= src
->u
.syment
.n_value
;
3381 case C_MOS
: /* member of structure */
3382 case C_EOS
: /* end of structure */
3383 #ifdef NOTDEF /* C_AUTOARG has the same value */
3385 case C_GLBLREG
: /* A29k-specific storage class */
3388 case C_REGPARM
: /* register parameter */
3389 case C_REG
: /* register variable */
3391 case C_AUTOARG
: /* 960-specific storage class */
3393 case C_TPDEF
: /* type definition */
3395 case C_AUTO
: /* automatic variable */
3396 case C_FIELD
: /* bit field */
3397 case C_ENTAG
: /* enumeration tag */
3398 case C_MOE
: /* member of enumeration */
3399 case C_MOU
: /* member of union */
3400 case C_UNTAG
: /* union tag */
3401 dst
->symbol
.flags
= BSF_DEBUGGING
;
3402 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3405 case C_FILE
: /* file name */
3406 case C_STRTAG
: /* structure tag */
3421 dst
->symbol
.flags
= BSF_DEBUGGING
;
3422 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3426 case C_BINCL
: /* beginning of include file */
3427 case C_EINCL
: /* ending of include file */
3428 /* The value is actually a pointer into the line numbers
3429 of the file. We locate the line number entry, and
3430 set the section to the section which contains it, and
3431 the value to the index in that section. */
3435 dst
->symbol
.flags
= BSF_DEBUGGING
;
3436 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
3437 if (sec
->line_filepos
<= (file_ptr
) src
->u
.syment
.n_value
3438 && ((file_ptr
) (sec
->line_filepos
3439 + sec
->lineno_count
* LINESZ
)
3440 > (file_ptr
) src
->u
.syment
.n_value
))
3443 dst
->symbol
.value
= 0;
3446 dst
->symbol
.section
= sec
;
3447 dst
->symbol
.value
= ((src
->u
.syment
.n_value
3448 - sec
->line_filepos
)
3456 dst
->symbol
.flags
= BSF_DEBUGGING
;
3458 /* The value is actually a symbol index. Save a pointer
3459 to the symbol instead of the index. FIXME: This
3460 should use a union. */
3461 src
->u
.syment
.n_value
=
3462 (long) (native_symbols
+ src
->u
.syment
.n_value
);
3463 dst
->symbol
.value
= src
->u
.syment
.n_value
;
3468 case C_BLOCK
: /* ".bb" or ".eb" */
3469 case C_FCN
: /* ".bf" or ".ef" */
3470 case C_EFCN
: /* physical end of function */
3471 dst
->symbol
.flags
= BSF_LOCAL
;
3472 /* Base the value as an index from the base of the
3474 dst
->symbol
.value
= (src
->u
.syment
.n_value
3475 - dst
->symbol
.section
->vma
);
3479 case C_EXTDEF
: /* external definition */
3480 case C_ULABEL
: /* undefined label */
3481 case C_USTATIC
: /* undefined static */
3482 #ifndef COFF_WITH_PE
3483 /* C_LINE in regular coff is 0x68. NT has taken over this storage
3484 class to represent a section symbol */
3485 case C_LINE
: /* line # reformatted as symbol table entry */
3486 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
3487 case C_ALIAS
: /* duplicate tag */
3489 case C_HIDDEN
: /* ext symbol in dmert public lib */
3491 (*_bfd_error_handler
)
3492 ("%s: Unrecognized storage class %d for %s symbol `%s'",
3493 bfd_get_filename (abfd
), src
->u
.syment
.n_sclass
,
3494 dst
->symbol
.section
->name
, dst
->symbol
.name
);
3495 dst
->symbol
.flags
= BSF_DEBUGGING
;
3496 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
3500 /* BFD_ASSERT(dst->symbol.flags != 0);*/
3504 dst
->symbol
.udata
.i
= 0;
3505 dst
->lineno
= (alent
*) NULL
;
3506 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
3508 number_of_symbols
++;
3509 } /* walk the native symtab */
3510 } /* bfdize the native symtab */
3512 obj_symbols (abfd
) = cached_area
;
3513 obj_raw_syments (abfd
) = native_symbols
;
3515 bfd_get_symcount (abfd
) = number_of_symbols
;
3516 obj_convert (abfd
) = table_ptr
;
3517 /* Slurp the line tables for each section too */
3523 coff_slurp_line_table (abfd
, p
);
3528 } /* coff_slurp_symbol_table() */
3530 /* Check whether a symbol is globally visible. This is used by the
3531 COFF backend linker code in cofflink.c, since a couple of targets
3532 have globally visible symbols which are not class C_EXT. This
3533 function need not handle the case of n_class == C_EXT. */
3535 #undef OTHER_GLOBAL_CLASS
3538 #define OTHER_GLOBAL_CLASS C_LEAFEXT
3542 #define OTHER_GLOBAL_CLASS C_SECTION
3545 #ifdef OTHER_GLOBAL_CLASS
3548 coff_sym_is_global (abfd
, syment
)
3550 struct internal_syment
*syment
;
3552 if (syment
->n_sclass
== OTHER_GLOBAL_CLASS
)
3557 #undef OTHER_GLOBAL_CLASS
3559 #else /* ! defined (OTHER_GLOBAL_CLASS) */
3561 /* sym_is_global should not be defined if it has nothing to do. */
3563 #define coff_sym_is_global 0
3565 #endif /* ! defined (OTHER_GLOBAL_CLASS) */
3571 Coff relocations are easily transformed into the internal BFD form
3574 Reading a coff relocation table is done in the following stages:
3576 o Read the entire coff relocation table into memory.
3578 o Process each relocation in turn; first swap it from the
3579 external to the internal form.
3581 o Turn the symbol referenced in the relocation's symbol index
3582 into a pointer into the canonical symbol table.
3583 This table is the same as the one returned by a call to
3584 @code{bfd_canonicalize_symtab}. The back end will call that
3585 routine and save the result if a canonicalization hasn't been done.
3587 o The reloc index is turned into a pointer to a howto
3588 structure, in a back end specific way. For instance, the 386
3589 and 960 use the @code{r_type} to directly produce an index
3590 into a howto table vector; the 88k subtracts a number from the
3591 @code{r_type} field and creates an addend field.
3597 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
3599 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
3600 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
3601 coffsym = (obj_symbols (abfd) \
3602 + (cache_ptr->sym_ptr_ptr - symbols)); \
3604 coffsym = coff_symbol_from (abfd, ptr); \
3605 if (coffsym != (coff_symbol_type *) NULL \
3606 && coffsym->native->u.syment.n_scnum == 0) \
3607 cache_ptr->addend = 0; \
3608 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
3609 && ptr->section != (asection *) NULL) \
3610 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
3612 cache_ptr->addend = 0; \
3617 coff_slurp_reloc_table (abfd
, asect
, symbols
)
3622 RELOC
*native_relocs
;
3623 arelent
*reloc_cache
;
3628 if (asect
->relocation
)
3630 if (asect
->reloc_count
== 0)
3632 if (asect
->flags
& SEC_CONSTRUCTOR
)
3634 if (!coff_slurp_symbol_table (abfd
))
3637 (RELOC
*) buy_and_read (abfd
,
3641 asect
->reloc_count
));
3642 reloc_cache
= (arelent
*)
3643 bfd_alloc (abfd
, (size_t) (asect
->reloc_count
* sizeof (arelent
)));
3645 if (reloc_cache
== NULL
)
3649 for (idx
= 0; idx
< asect
->reloc_count
; idx
++)
3651 struct internal_reloc dst
;
3652 struct external_reloc
*src
;
3653 #ifndef RELOC_PROCESSING
3657 cache_ptr
= reloc_cache
+ idx
;
3658 src
= native_relocs
+ idx
;
3660 coff_swap_reloc_in (abfd
, src
, &dst
);
3662 #ifdef RELOC_PROCESSING
3663 RELOC_PROCESSING (cache_ptr
, &dst
, symbols
, abfd
, asect
);
3665 cache_ptr
->address
= dst
.r_vaddr
;
3667 if (dst
.r_symndx
!= -1)
3669 if (dst
.r_symndx
< 0 || dst
.r_symndx
>= obj_conv_table_size (abfd
))
3671 (*_bfd_error_handler
)
3672 ("%s: warning: illegal symbol index %ld in relocs",
3673 bfd_get_filename (abfd
), dst
.r_symndx
);
3674 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
3679 cache_ptr
->sym_ptr_ptr
= (symbols
3680 + obj_convert (abfd
)[dst
.r_symndx
]);
3681 ptr
= *(cache_ptr
->sym_ptr_ptr
);
3686 cache_ptr
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
3690 /* The symbols definitions that we have read in have been
3691 relocated as if their sections started at 0. But the offsets
3692 refering to the symbols in the raw data have not been
3693 modified, so we have to have a negative addend to compensate.
3695 Note that symbols which used to be common must be left alone */
3697 /* Calculate any reloc addend by looking at the symbol */
3698 CALC_ADDEND (abfd
, ptr
, dst
, cache_ptr
);
3700 cache_ptr
->address
-= asect
->vma
;
3701 /* !! cache_ptr->section = (asection *) NULL;*/
3703 /* Fill in the cache_ptr->howto field from dst.r_type */
3704 RTYPE2HOWTO (cache_ptr
, &dst
);
3705 #endif /* RELOC_PROCESSING */
3707 if (cache_ptr
->howto
== NULL
)
3709 (*_bfd_error_handler
)
3710 ("%s: illegal relocation type %d at address 0x%lx",
3711 bfd_get_filename (abfd
), dst
.r_type
, (long) dst
.r_vaddr
);
3712 bfd_set_error (bfd_error_bad_value
);
3717 asect
->relocation
= reloc_cache
;
3721 #ifndef coff_rtype_to_howto
3724 /* Get the howto structure for a reloc. This is only used if the file
3725 including this one defines coff_relocate_section to be
3726 _bfd_coff_generic_relocate_section, so it is OK if it does not
3727 always work. It is the responsibility of the including file to
3728 make sure it is reasonable if it is needed. */
3730 static reloc_howto_type
*coff_rtype_to_howto
3731 PARAMS ((bfd
*, asection
*, struct internal_reloc
*,
3732 struct coff_link_hash_entry
*, struct internal_syment
*,
3736 static reloc_howto_type
*
3737 coff_rtype_to_howto (abfd
, sec
, rel
, h
, sym
, addendp
)
3740 struct internal_reloc
*rel
;
3741 struct coff_link_hash_entry
*h
;
3742 struct internal_syment
*sym
;
3747 RTYPE2HOWTO (&genrel
, rel
);
3748 return genrel
.howto
;
3751 #else /* ! defined (RTYPE2HOWTO) */
3753 #define coff_rtype_to_howto NULL
3755 #endif /* ! defined (RTYPE2HOWTO) */
3756 #endif /* ! defined (coff_rtype_to_howto) */
3758 /* This is stupid. This function should be a boolean predicate. */
3760 coff_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
3766 arelent
*tblptr
= section
->relocation
;
3767 unsigned int count
= 0;
3770 if (section
->flags
& SEC_CONSTRUCTOR
)
3772 /* this section has relocs made up by us, they are not in the
3773 file, so take them out of their chain and place them into
3774 the data area provided */
3775 arelent_chain
*chain
= section
->constructor_chain
;
3776 for (count
= 0; count
< section
->reloc_count
; count
++)
3778 *relptr
++ = &chain
->relent
;
3779 chain
= chain
->next
;
3785 if (! coff_slurp_reloc_table (abfd
, section
, symbols
))
3788 tblptr
= section
->relocation
;
3790 for (; count
++ < section
->reloc_count
;)
3791 *relptr
++ = tblptr
++;
3796 return section
->reloc_count
;
3801 coff_sym_filepos (abfd
)
3804 return obj_sym_filepos (abfd
);
3808 #ifndef coff_reloc16_estimate
3809 #define coff_reloc16_estimate dummy_reloc16_estimate
3812 dummy_reloc16_estimate (abfd
, input_section
, reloc
, shrink
, link_info
)
3814 asection
*input_section
;
3816 unsigned int shrink
;
3817 struct bfd_link_info
*link_info
;
3824 #ifndef coff_reloc16_extra_cases
3825 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
3826 /* This works even if abort is not declared in any header file. */
3828 dummy_reloc16_extra_cases (abfd
, link_info
, link_order
, reloc
, data
, src_ptr
,
3831 struct bfd_link_info
*link_info
;
3832 struct bfd_link_order
*link_order
;
3835 unsigned int *src_ptr
;
3836 unsigned int *dst_ptr
;
3842 /* If coff_relocate_section is defined, we can use the optimized COFF
3843 backend linker. Otherwise we must continue to use the old linker. */
3844 #ifdef coff_relocate_section
3845 #ifndef coff_bfd_link_hash_table_create
3846 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
3848 #ifndef coff_bfd_link_add_symbols
3849 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
3851 #ifndef coff_bfd_final_link
3852 #define coff_bfd_final_link _bfd_coff_final_link
3854 #else /* ! defined (coff_relocate_section) */
3855 #define coff_relocate_section NULL
3856 #ifndef coff_bfd_link_hash_table_create
3857 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
3859 #ifndef coff_bfd_link_add_symbols
3860 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
3862 #define coff_bfd_final_link _bfd_generic_final_link
3863 #endif /* ! defined (coff_relocate_section) */
3864 #define coff_bfd_link_split_section _bfd_generic_link_split_section
3866 #ifndef coff_start_final_link
3867 #define coff_start_final_link NULL
3870 #ifndef coff_adjust_symndx
3871 #define coff_adjust_symndx NULL
3874 #ifndef coff_link_add_one_symbol
3875 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
3878 static CONST bfd_coff_backend_data bfd_coff_std_swap_table
=
3880 coff_swap_aux_in
, coff_swap_sym_in
, coff_swap_lineno_in
,
3881 coff_swap_aux_out
, coff_swap_sym_out
,
3882 coff_swap_lineno_out
, coff_swap_reloc_out
,
3883 coff_swap_filehdr_out
, coff_swap_aouthdr_out
,
3884 coff_swap_scnhdr_out
,
3885 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
,
3886 #ifdef COFF_LONG_FILENAMES
3891 #ifdef COFF_LONG_SECTION_NAMES
3896 coff_swap_filehdr_in
, coff_swap_aouthdr_in
, coff_swap_scnhdr_in
,
3897 coff_swap_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
3898 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
3899 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
3900 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
3901 coff_sym_is_global
, coff_compute_section_file_positions
,
3902 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
3903 coff_adjust_symndx
, coff_link_add_one_symbol
3906 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
3907 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
3908 #define coff_get_section_contents _bfd_generic_get_section_contents
3910 #ifndef coff_bfd_copy_private_symbol_data
3911 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
3914 #ifndef coff_bfd_copy_private_section_data
3915 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
3918 #ifndef coff_bfd_copy_private_bfd_data
3919 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
3922 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
3923 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
3925 #ifndef coff_bfd_print_private_bfd_data
3926 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
3929 #ifndef coff_bfd_is_local_label_name
3930 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
3932 #ifndef coff_read_minisymbols
3933 #define coff_read_minisymbols _bfd_generic_read_minisymbols
3935 #ifndef coff_minisymbol_to_symbol
3936 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
3939 /* The reloc lookup routine must be supplied by each individual COFF
3941 #ifndef coff_bfd_reloc_type_lookup
3942 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
3945 #ifndef coff_bfd_get_relocated_section_contents
3946 #define coff_bfd_get_relocated_section_contents \
3947 bfd_generic_get_relocated_section_contents
3949 #ifndef coff_bfd_relax_section
3950 #define coff_bfd_relax_section bfd_generic_relax_section