1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright 1990, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 Most of this hacked by Steve Chamberlain,
30 BFD supports a number of different flavours of coff format.
31 The major differences between formats are the sizes and
32 alignments of fields in structures on disk, and the occasional
35 Coff in all its varieties is implemented with a few common
36 files and a number of implementation specific files. For
37 example, The 88k bcs coff format is implemented in the file
38 @file{coff-m88k.c}. This file @code{#include}s
39 @file{coff/m88k.h} which defines the external structure of the
40 coff format for the 88k, and @file{coff/internal.h} which
41 defines the internal structure. @file{coff-m88k.c} also
42 defines the relocations used by the 88k format
45 The Intel i960 processor version of coff is implemented in
46 @file{coff-i960.c}. This file has the same structure as
47 @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
48 rather than @file{coff-m88k.h}.
51 Porting to a new version of coff
53 The recommended method is to select from the existing
54 implementations the version of coff which is most like the one
55 you want to use. For example, we'll say that i386 coff is
56 the one you select, and that your coff flavour is called foo.
57 Copy @file{i386coff.c} to @file{foocoff.c}, copy
58 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
59 and add the lines to @file{targets.c} and @file{Makefile.in}
60 so that your new back end is used. Alter the shapes of the
61 structures in @file{../include/coff/foo.h} so that they match
62 what you need. You will probably also have to add
63 @code{#ifdef}s to the code in @file{coff/internal.h} and
64 @file{coffcode.h} if your version of coff is too wild.
66 You can verify that your new BFD backend works quite simply by
67 building @file{objdump} from the @file{binutils} directory,
68 and making sure that its version of what's going on and your
69 host system's idea (assuming it has the pretty standard coff
70 dump utility, usually called @code{att-dump} or just
71 @code{dump}) are the same. Then clean up your code, and send
72 what you've done to Cygnus. Then your stuff will be in the
73 next release, and you won't have to keep integrating it.
76 How the coff backend works
81 The Coff backend is split into generic routines that are
82 applicable to any Coff target and routines that are specific
83 to a particular target. The target-specific routines are
84 further split into ones which are basically the same for all
85 Coff targets except that they use the external symbol format
86 or use different values for certain constants.
88 The generic routines are in @file{coffgen.c}. These routines
89 work for any Coff target. They use some hooks into the target
90 specific code; the hooks are in a @code{bfd_coff_backend_data}
91 structure, one of which exists for each target.
93 The essentially similar target-specific routines are in
94 @file{coffcode.h}. This header file includes executable C code.
95 The various Coff targets first include the appropriate Coff
96 header file, make any special defines that are needed, and
97 then include @file{coffcode.h}.
99 Some of the Coff targets then also have additional routines in
100 the target source file itself.
102 For example, @file{coff-i960.c} includes
103 @file{coff/internal.h} and @file{coff/i960.h}. It then
104 defines a few constants, such as @code{I960}, and includes
105 @file{coffcode.h}. Since the i960 has complex relocation
106 types, @file{coff-i960.c} also includes some code to
107 manipulate the i960 relocs. This code is not in
108 @file{coffcode.h} because it would not be used by any other
114 Each flavour of coff supported in BFD has its own header file
115 describing the external layout of the structures. There is also
116 an internal description of the coff layout, in
117 @file{coff/internal.h}. A major function of the
118 coff backend is swapping the bytes and twiddling the bits to
119 translate the external form of the structures into the normal
120 internal form. This is all performed in the
121 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
122 elements are different sizes between different versions of
123 coff; it is the duty of the coff version specific include file
124 to override the definitions of various packing routines in
125 @file{coffcode.h}. E.g., the size of line number entry in coff is
126 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
127 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
128 correct one. No doubt, some day someone will find a version of
129 coff which has a varying field size not catered to at the
130 moment. To port BFD, that person will have to add more @code{#defines}.
131 Three of the bit twiddling routines are exported to
132 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
133 and @code{coff_swap_linno_in}. @code{GDB} reads the symbol
134 table on its own, but uses BFD to fix things up. More of the
135 bit twiddlers are exported for @code{gas};
136 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
137 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
138 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
139 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
140 of all the symbol table and reloc drudgery itself, thereby
141 saving the internal BFD overhead, but uses BFD to swap things
142 on the way out, making cross ports much safer. Doing so also
143 allows BFD (and thus the linker) to use the same header files
144 as @code{gas}, which makes one avenue to disaster disappear.
149 The simple canonical form for symbols used by BFD is not rich
150 enough to keep all the information available in a coff symbol
151 table. The back end gets around this problem by keeping the original
152 symbol table around, "behind the scenes".
154 When a symbol table is requested (through a call to
155 @code{bfd_canonicalize_symtab}), a request gets through to
156 @code{coff_get_normalized_symtab}. This reads the symbol table from
157 the coff file and swaps all the structures inside into the
158 internal form. It also fixes up all the pointers in the table
159 (represented in the file by offsets from the first symbol in
160 the table) into physical pointers to elements in the new
161 internal table. This involves some work since the meanings of
162 fields change depending upon context: a field that is a
163 pointer to another structure in the symbol table at one moment
164 may be the size in bytes of a structure at the next. Another
165 pass is made over the table. All symbols which mark file names
166 (<<C_FILE>> symbols) are modified so that the internal
167 string points to the value in the auxent (the real filename)
168 rather than the normal text associated with the symbol
171 At this time the symbol names are moved around. Coff stores
172 all symbols less than nine characters long physically
173 within the symbol table; longer strings are kept at the end of
174 the file in the string table. This pass moves all strings
175 into memory and replaces them with pointers to the strings.
178 The symbol table is massaged once again, this time to create
179 the canonical table used by the BFD application. Each symbol
180 is inspected in turn, and a decision made (using the
181 @code{sclass} field) about the various flags to set in the
182 @code{asymbol}. @xref{Symbols}. The generated canonical table
183 shares strings with the hidden internal symbol table.
185 Any linenumbers are read from the coff file too, and attached
186 to the symbols which own the functions the linenumbers belong to.
191 Writing a symbol to a coff file which didn't come from a coff
192 file will lose any debugging information. The @code{asymbol}
193 structure remembers the BFD from which the symbol was taken, and on
194 output the back end makes sure that the same destination target as
195 source target is present.
197 When the symbols have come from a coff file then all the
198 debugging information is preserved.
200 Symbol tables are provided for writing to the back end in a
201 vector of pointers to pointers. This allows applications like
202 the linker to accumulate and output large symbol tables
203 without having to do too much byte copying.
205 This function runs through the provided symbol table and
206 patches each symbol marked as a file place holder
207 (@code{C_FILE}) to point to the next file place holder in the
208 list. It also marks each @code{offset} field in the list with
209 the offset from the first symbol of the current symbol.
211 Another function of this procedure is to turn the canonical
212 value form of BFD into the form used by coff. Internally, BFD
213 expects symbol values to be offsets from a section base; so a
214 symbol physically at 0x120, but in a section starting at
215 0x100, would have the value 0x20. Coff expects symbols to
216 contain their final value, so symbols have their values
217 changed at this point to reflect their sum with their owning
218 section. This transformation uses the
219 <<output_section>> field of the @code{asymbol}'s
220 @code{asection} @xref{Sections}.
222 o <<coff_mangle_symbols>>
224 This routine runs though the provided symbol table and uses
225 the offsets generated by the previous pass and the pointers
226 generated when the symbol table was read in to create the
227 structured hierachy required by coff. It changes each pointer
228 to a symbol into the index into the symbol table of the asymbol.
230 o <<coff_write_symbols>>
232 This routine runs through the symbol table and patches up the
233 symbols from their internal form into the coff way, calls the
234 bit twiddlers, and writes out the table to the file.
243 The hidden information for an <<asymbol>> is described in a
244 <<combined_entry_type>>:
248 .typedef struct coff_ptr_struct
251 . {* Remembers the offset from the first symbol in the file for
252 . this symbol. Generated by coff_renumber_symbols. *}
253 .unsigned int offset;
255 . {* Should the value of this symbol be renumbered. Used for
256 . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
257 .unsigned int fix_value : 1;
259 . {* Should the tag field of this symbol be renumbered.
260 . Created by coff_pointerize_aux. *}
261 .unsigned int fix_tag : 1;
263 . {* Should the endidx field of this symbol be renumbered.
264 . Created by coff_pointerize_aux. *}
265 .unsigned int fix_end : 1;
267 . {* Should the x_csect.x_scnlen field be renumbered.
268 . Created by coff_pointerize_aux. *}
269 .unsigned int fix_scnlen : 1;
271 . {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
272 . index into the line number entries. Set by
273 . coff_slurp_symbol_table. *}
274 .unsigned int fix_line : 1;
276 . {* The container for the symbol structure as read and translated
280 . union internal_auxent auxent;
281 . struct internal_syment syment;
283 .} combined_entry_type;
286 .{* Each canonical asymbol really looks like this: *}
288 .typedef struct coff_symbol_struct
290 . {* The actual symbol which the rest of BFD works with *}
293 . {* A pointer to the hidden information for this symbol *}
294 .combined_entry_type *native;
296 . {* A pointer to the linenumber information for this symbol *}
297 .struct lineno_cache_entry *lineno;
299 . {* Have the line numbers been relocated yet ? *}
300 .boolean done_lineno;
309 #include "coffswap.h"
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 . void (*_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 default: /* Unreadable input file type */
1537 arch = bfd_arch_obscure;
1541 bfd_default_set_arch_mach (abfd, arch, machine);
1545 #ifdef SYMNAME_IN_DEBUG
1548 symname_in_debug_hook (abfd, sym)
1550 struct internal_syment *sym;
1552 return SYMNAME_IN_DEBUG (sym) ? true : false;
1557 #define symname_in_debug_hook \
1558 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
1564 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
1566 static boolean coff_pointerize_aux_hook
1567 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
1568 unsigned int, combined_entry_type *));
1572 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
1574 combined_entry_type *table_base;
1575 combined_entry_type *symbol;
1576 unsigned int indaux;
1577 combined_entry_type *aux;
1579 int class = symbol->u.syment.n_sclass;
1581 if ((class == C_EXT || class == C_HIDEXT)
1582 && indaux + 1 == symbol->u.syment.n_numaux)
1584 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
1586 aux->u.auxent.x_csect.x_scnlen.p =
1587 table_base + aux->u.auxent.x_csect.x_scnlen.l;
1588 aux->fix_scnlen = 1;
1591 /* Return true to indicate that the caller should not do any
1592 further work on this auxent. */
1596 /* Return false to indicate that this auxent should be handled by
1604 /* We don't want to pointerize bal entries. */
1606 static boolean coff_pointerize_aux_hook
1607 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
1608 unsigned int, combined_entry_type *));
1612 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
1614 combined_entry_type *table_base;
1615 combined_entry_type *symbol;
1616 unsigned int indaux;
1617 combined_entry_type *aux;
1619 /* Return true if we don't want to pointerize this aux entry, which
1620 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
1622 && (symbol->u.syment.n_sclass == C_LEAFPROC
1623 || symbol->u.syment.n_sclass == C_LEAFSTAT
1624 || symbol->u.syment.n_sclass == C_LEAFEXT));
1629 #define coff_pointerize_aux_hook 0
1632 #endif /* ! RS6000COFF_C */
1634 /* Print an aux entry. This returns true if it has printed it. */
1636 static boolean coff_print_aux
1637 PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1638 combined_entry_type *, unsigned int));
1641 coff_print_aux (abfd, file, table_base, symbol, aux, indaux)
1644 combined_entry_type *table_base;
1645 combined_entry_type *symbol;
1646 combined_entry_type *aux;
1647 unsigned int indaux;
1650 if ((symbol->u.syment.n_sclass == C_EXT
1651 || symbol->u.syment.n_sclass == C_HIDEXT)
1652 && indaux + 1 == symbol->u.syment.n_numaux)
1654 /* This is a csect entry. */
1655 fprintf (file, "AUX ");
1656 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
1658 BFD_ASSERT (! aux->fix_scnlen);
1659 fprintf (file, "val %5ld", aux->u.auxent.x_csect.x_scnlen.l);
1663 fprintf (file, "indx ");
1664 if (! aux->fix_scnlen)
1665 fprintf (file, "%4ld", aux->u.auxent.x_csect.x_scnlen.l);
1667 fprintf (file, "%4ld",
1668 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
1671 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
1672 aux->u.auxent.x_csect.x_parmhash,
1673 (unsigned int) aux->u.auxent.x_csect.x_snhash,
1674 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
1675 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
1676 (unsigned int) aux->u.auxent.x_csect.x_smclas,
1677 aux->u.auxent.x_csect.x_stab,
1678 (unsigned int) aux->u.auxent.x_csect.x_snstab);
1683 /* Return false to indicate that no special action was taken. */
1691 To write relocations, the back end steps though the
1692 canonical relocation table and create an
1693 @code{internal_reloc}. The symbol index to use is removed from
1694 the @code{offset} field in the symbol table supplied. The
1695 address comes directly from the sum of the section base
1696 address and the relocation offset; the type is dug directly
1697 from the howto field. Then the @code{internal_reloc} is
1698 swapped into the shape of an @code{external_reloc} and written
1705 static int compare_arelent_ptr PARAMS ((const PTR, const PTR));
1707 /* AUX's ld wants relocations to be sorted */
1709 compare_arelent_ptr (x, y)
1713 const arelent **a = (const arelent **) x;
1714 const arelent **b = (const arelent **) y;
1715 bfd_size_type aadr = (*a)->address;
1716 bfd_size_type badr = (*b)->address;
1718 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
1721 #endif /* TARG_AUX */
1724 coff_write_relocs (abfd, first_undef)
1730 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
1733 struct external_reloc dst;
1739 /* sort relocations before we write them out */
1740 p = (arelent **) bfd_malloc (s->reloc_count * sizeof (arelent *));
1741 if (p == NULL && s->reloc_count > 0)
1743 memcpy (p, s->orelocation, s->reloc_count * sizeof (arelent *));
1744 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
1747 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
1749 for (i = 0; i < s->reloc_count; i++)
1751 struct internal_reloc n;
1753 memset ((PTR) & n, 0, sizeof (n));
1755 /* Now we've renumbered the symbols we know where the
1756 undefined symbols live in the table. Check the reloc
1757 entries for symbols who's output bfd isn't the right one.
1758 This is because the symbol was undefined (which means
1759 that all the pointers are never made to point to the same
1760 place). This is a bad thing,'cause the symbols attached
1761 to the output bfd are indexed, so that the relocation
1762 entries know which symbol index they point to. So we
1763 have to look up the output symbol here. */
1765 if (q->sym_ptr_ptr[0]->the_bfd != abfd)
1768 const char *sname = q->sym_ptr_ptr[0]->name;
1769 asymbol **outsyms = abfd->outsymbols;
1770 for (i = first_undef; outsyms[i]; i++)
1772 const char *intable = outsyms[i]->name;
1773 if (strcmp (intable, sname) == 0) {
1774 /* got a hit, so repoint the reloc */
1775 q->sym_ptr_ptr = outsyms + i;
1781 n.r_vaddr = q->address + s->vma;
1784 /* The 29k const/consth reloc pair is a real kludge. The consth
1785 part doesn't have a symbol; it has an offset. So rebuilt
1787 if (q->howto->type == R_IHCONST)
1788 n.r_symndx = q->addend;
1793 if (q->sym_ptr_ptr == bfd_abs_section_ptr->symbol_ptr_ptr)
1794 /* This is a relocation relative to the absolute symbol. */
1798 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
1799 /* Take notice if the symbol reloc points to a symbol
1800 we don't have in our symbol table. What should we
1802 if (n.r_symndx > obj_conv_table_size (abfd))
1807 #ifdef SWAP_OUT_RELOC_OFFSET
1808 n.r_offset = q->addend;
1812 /* Work out reloc type from what is required */
1813 SELECT_RELOC (n, q->howto);
1815 n.r_type = q->howto->type;
1817 coff_swap_reloc_out (abfd, &n, &dst);
1818 if (bfd_write ((PTR) & dst, 1, RELSZ, abfd) != RELSZ)
1831 /* Set flags and magic number of a coff file from architecture and machine
1832 type. Result is true if we can represent the arch&type, false if not. */
1835 coff_set_flags (abfd, magicp, flagsp)
1838 unsigned short *flagsp;
1840 switch (bfd_get_arch (abfd))
1845 switch (bfd_get_mach (abfd))
1847 case bfd_mach_z8001:
1850 case bfd_mach_z8002:
1864 *magicp = I960ROMAGIC;
1866 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
1867 I960RWMAGIC); FIXME???
1869 switch (bfd_get_mach (abfd))
1871 case bfd_mach_i960_core:
1874 case bfd_mach_i960_kb_sb:
1877 case bfd_mach_i960_mc:
1880 case bfd_mach_i960_xa:
1883 case bfd_mach_i960_ca:
1886 case bfd_mach_i960_ka_sa:
1889 case bfd_mach_i960_jx:
1892 case bfd_mach_i960_hx:
1909 case bfd_arch_powerpc:
1916 *magicp = I386MAGIC;
1918 /* Just overwrite the usual value if we're doing Lynx. */
1919 *magicp = LYNXCOFFMAGIC;
1926 *magicp = I860MAGIC;
1932 #ifdef APOLLOM68KMAGIC
1933 *magicp = APOLLO_COFF_VERSION_NUMBER;
1935 *magicp = MC68MAGIC;
1938 /* Just overwrite the usual value if we're doing Lynx. */
1939 *magicp = LYNXCOFFMAGIC;
1947 *magicp = MC88OMAGIC;
1952 case bfd_arch_h8300:
1953 switch (bfd_get_mach (abfd))
1955 case bfd_mach_h8300:
1956 *magicp = H8300MAGIC;
1958 case bfd_mach_h8300h:
1959 *magicp = H8300HMAGIC;
1961 case bfd_mach_h8300s:
1962 *magicp = H8300SMAGIC;
1968 #ifdef SH_ARCH_MAGIC_BIG
1970 if (bfd_big_endian (abfd))
1971 *magicp = SH_ARCH_MAGIC_BIG;
1973 *magicp = SH_ARCH_MAGIC_LITTLE;
1979 case bfd_arch_sparc:
1980 *magicp = SPARCMAGIC;
1982 /* Just overwrite the usual value if we're doing Lynx. */
1983 *magicp = LYNXCOFFMAGIC;
1990 case bfd_arch_h8500:
1991 *magicp = H8500MAGIC;
1995 #ifdef A29K_MAGIC_BIG
1997 if (bfd_big_endian (abfd))
1998 *magicp = A29K_MAGIC_BIG;
2000 *magicp = A29K_MAGIC_LITTLE;
2006 case bfd_arch_we32k:
2007 *magicp = WE32KMAGIC;
2013 case bfd_arch_rs6000:
2015 case bfd_arch_powerpc:
2017 *magicp = U802TOCMAGIC;
2022 default: /* Unknown architecture */
2023 /* return false; -- fall through to "return false" below, to avoid
2024 "statement never reached" errors on the one below. */
2033 coff_set_arch_mach (abfd, arch, machine)
2035 enum bfd_architecture arch;
2036 unsigned long machine;
2039 unsigned short dummy2;
2041 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2044 if (arch != bfd_arch_unknown &&
2045 coff_set_flags (abfd, &dummy1, &dummy2) != true)
2046 return false; /* We can't represent this type */
2048 return true; /* We're easy ... */
2052 /* Calculate the file position for each section. */
2055 coff_compute_section_file_positions (abfd)
2059 asection *previous = (asection *) NULL;
2060 file_ptr sofar = FILHSZ;
2068 /* On XCOFF, if we have symbols, set up the .debug section. */
2069 if (bfd_get_symcount (abfd) > 0)
2072 bfd_size_type i, symcount;
2076 symcount = bfd_get_symcount (abfd);
2077 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
2079 coff_symbol_type *cf;
2081 cf = coff_symbol_from (abfd, *symp);
2083 && cf->native != NULL
2084 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
2088 len = strlen (bfd_asymbol_name (*symp));
2097 dsec = bfd_make_section_old_way (abfd, ".debug");
2100 dsec->_raw_size = sz;
2101 dsec->flags |= SEC_HAS_CONTENTS;
2106 #ifdef COFF_IMAGE_WITH_PE
2108 if (coff_data (abfd)->link_info)
2110 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
2113 page_size = PE_DEF_FILE_ALIGNMENT;
2115 #ifdef COFF_PAGE_SIZE
2116 int page_size = COFF_PAGE_SIZE;
2120 if (bfd_get_start_address (abfd))
2122 /* A start address may have been added to the original file. In this
2123 case it will need an optional header to record it. */
2124 abfd->flags |= EXEC_P;
2127 if (abfd->flags & EXEC_P)
2130 else if (xcoff_data (abfd)->full_aouthdr)
2133 sofar += SMALL_AOUTSZ;
2136 sofar += abfd->section_count * SCNHSZ;
2139 /* XCOFF handles overflows in the reloc and line number count fields
2140 by allocating a new section header to hold the correct counts. */
2141 for (current = abfd->sections; current != NULL; current = current->next)
2142 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2146 for (current = abfd->sections, count = 1;
2147 current != (asection *) NULL;
2148 current = current->next, ++count)
2150 current->target_index = count;
2152 /* Only deal with sections which have contents */
2153 if (!(current->flags & SEC_HAS_CONTENTS))
2156 /* Align the sections in the file to the same boundary on
2157 which they are aligned in virtual memory. I960 doesn't
2158 do this (FIXME) so we can stay in sync with Intel. 960
2159 doesn't yet page from files... */
2161 if ((abfd->flags & EXEC_P) != 0)
2163 /* make sure this section is aligned on the right boundary - by
2164 padding the previous section up if necessary */
2167 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
2168 if (previous != (asection *) NULL)
2170 previous->_raw_size += sofar - old_sofar;
2176 /* In demand paged files the low order bits of the file offset
2177 must match the low order bits of the virtual address. */
2178 #ifdef COFF_PAGE_SIZE
2179 if ((abfd->flags & D_PAGED) != 0
2180 && (current->flags & SEC_ALLOC) != 0)
2181 sofar += (current->vma - sofar) % page_size;
2183 current->filepos = sofar;
2185 #ifdef COFF_IMAGE_WITH_PE
2186 /* With PE we have to pad each section to be a multiple of its
2187 page size too, and remember both sizes. */
2189 if (coff_section_data (abfd, current) == NULL)
2191 current->used_by_bfd =
2192 (PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata));
2193 if (current->used_by_bfd == NULL)
2195 /* FIXME: Return error. */
2199 if (pei_section_data (abfd, current) == NULL)
2201 coff_section_data (abfd, current)->tdata =
2202 (PTR) bfd_zalloc (abfd, sizeof (struct pei_section_tdata));
2203 if (coff_section_data (abfd, current)->tdata == NULL)
2205 /* FIXME: Return error. */
2209 if (pei_section_data (abfd, current)->virt_size == 0)
2210 pei_section_data (abfd, current)->virt_size = current->_raw_size;
2212 current->_raw_size = (current->_raw_size + page_size -1) & -page_size;
2215 sofar += current->_raw_size;
2218 /* make sure that this section is of the right size too */
2219 if ((abfd->flags & EXEC_P) == 0)
2220 current->_raw_size = BFD_ALIGN (current->_raw_size,
2221 1 << current->alignment_power);
2225 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
2226 current->_raw_size += sofar - old_sofar;
2231 /* Force .lib sections to start at zero. The vma is then
2232 incremented in coff_set_section_contents. This is right for
2234 if (strcmp (current->name, _LIB) == 0)
2235 bfd_set_section_vma (abfd, current, 0);
2241 obj_relocbase (abfd) = sofar;
2242 abfd->output_has_begun = true;
2248 /* This can never work, because it is called too late--after the
2249 section positions have been set. I can't figure out what it is
2250 for, so I am going to disable it--Ian Taylor 20 March 1996. */
2252 /* If .file, .text, .data, .bss symbols are missing, add them. */
2253 /* @@ Should we only be adding missing symbols, or overriding the aux
2254 values for existing section symbols? */
2256 coff_add_missing_symbols (abfd)
2259 unsigned int nsyms = bfd_get_symcount (abfd);
2260 asymbol **sympp = abfd->outsymbols;
2263 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
2265 for (i = 0; i < nsyms; i++)
2267 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
2271 /* only do this if there is a coff representation of the input
2273 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
2278 name = csym->symbol.name;
2281 if (!strcmp (name, _TEXT))
2284 else if (!strcmp (name, ".wtext"))
2287 else if (!strcmp (name, _DATA))
2289 else if (!strcmp (name, _BSS))
2293 /* Now i == bfd_get_symcount (abfd). */
2294 /* @@ For now, don't deal with .file symbol. */
2297 if (!need_text && !need_data && !need_bss && !need_file)
2299 nsyms += need_text + need_data + need_bss + need_file;
2300 sympp2 = (asymbol **) bfd_alloc_by_size_t (abfd, nsyms * sizeof (asymbol *));
2303 memcpy (sympp2, sympp, i * sizeof (asymbol *));
2306 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
2310 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
2312 sympp2[i++] = coff_section_symbol (abfd, _DATA);
2314 sympp2[i++] = coff_section_symbol (abfd, _BSS);
2315 BFD_ASSERT (i == nsyms);
2316 bfd_set_symtab (abfd, sympp2, nsyms);
2325 coff_write_object_contents (abfd)
2329 boolean hasrelocs = false;
2330 boolean haslinno = false;
2332 file_ptr reloc_base;
2333 file_ptr lineno_base;
2335 unsigned long reloc_size = 0;
2336 unsigned long lnno_size = 0;
2337 boolean long_section_names;
2338 asection *text_sec = NULL;
2339 asection *data_sec = NULL;
2340 asection *bss_sec = NULL;
2341 struct internal_filehdr internal_f;
2342 struct internal_aouthdr internal_a;
2343 #ifdef COFF_LONG_SECTION_NAMES
2344 size_t string_size = STRING_SIZE_SIZE;
2347 bfd_set_error (bfd_error_system_call);
2349 /* Make a pass through the symbol table to count line number entries and
2350 put them into the correct asections */
2352 lnno_size = coff_count_linenumbers (abfd) * LINESZ;
2354 if (abfd->output_has_begun == false)
2355 coff_compute_section_file_positions (abfd);
2357 reloc_base = obj_relocbase (abfd);
2359 /* Work out the size of the reloc and linno areas */
2361 for (current = abfd->sections; current != NULL; current =
2363 reloc_size += current->reloc_count * RELSZ;
2365 lineno_base = reloc_base + reloc_size;
2366 sym_base = lineno_base + lnno_size;
2368 /* Indicate in each section->line_filepos its actual file address */
2369 for (current = abfd->sections; current != NULL; current =
2372 if (current->lineno_count)
2374 current->line_filepos = lineno_base;
2375 current->moving_line_filepos = lineno_base;
2376 lineno_base += current->lineno_count * LINESZ;
2380 current->line_filepos = 0;
2382 if (current->reloc_count)
2384 current->rel_filepos = reloc_base;
2385 reloc_base += current->reloc_count * RELSZ;
2389 current->rel_filepos = 0;
2393 /* Write section headers to the file. */
2394 internal_f.f_nscns = 0;
2396 if ((abfd->flags & EXEC_P) != 0)
2397 scn_base = FILHSZ + AOUTSZ;
2402 if (xcoff_data (abfd)->full_aouthdr)
2405 scn_base += SMALL_AOUTSZ;
2409 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
2412 long_section_names = false;
2413 for (current = abfd->sections;
2415 current = current->next)
2417 struct internal_scnhdr section;
2420 /* If we've got a .reloc section, remember. */
2422 #ifdef COFF_IMAGE_WITH_PE
2423 if (strcmp (current->name, ".reloc") == 0)
2425 pe_data (abfd)->has_reloc_section = 1;
2430 internal_f.f_nscns++;
2432 strncpy (section.s_name, current->name, SCNNMLEN);
2434 #ifdef COFF_LONG_SECTION_NAMES
2435 /* Handle long section names as in PE. This must be compatible
2436 with the code in coff_write_symbols. */
2440 len = strlen (current->name);
2443 memset (section.s_name, 0, SCNNMLEN);
2444 sprintf (section.s_name, "/%lu", (unsigned long) string_size);
2445 string_size += len + 1;
2446 long_section_names = true;
2452 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
2453 Ian Taylor <ian@cygnus.com>. */
2454 if (strcmp (current->name, _LIB) == 0)
2455 section.s_vaddr = 0;
2458 section.s_vaddr = current->vma;
2459 section.s_paddr = current->lma;
2460 section.s_size = current->_raw_size;
2463 section.s_paddr = 0;
2465 #ifdef COFF_IMAGE_WITH_PE
2466 /* Reminder: s_paddr holds the virtual size of the section. */
2467 if (coff_section_data (abfd, current) != NULL
2468 && pei_section_data (abfd, current) != NULL)
2469 section.s_paddr = pei_section_data (abfd, current)->virt_size;
2471 section.s_paddr = 0;
2475 If this section has no size or is unloadable then the scnptr
2478 if (current->_raw_size == 0 ||
2479 (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2481 section.s_scnptr = 0;
2485 section.s_scnptr = current->filepos;
2487 section.s_relptr = current->rel_filepos;
2488 section.s_lnnoptr = current->line_filepos;
2489 section.s_nreloc = current->reloc_count;
2490 section.s_nlnno = current->lineno_count;
2491 if (current->reloc_count != 0)
2493 if (current->lineno_count != 0)
2497 /* Indicate the use of an XCOFF overflow section header. */
2498 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2500 section.s_nreloc = 0xffff;
2501 section.s_nlnno = 0xffff;
2505 section.s_flags = sec_to_styp_flags (current->name, current->flags);
2507 if (!strcmp (current->name, _TEXT))
2511 else if (!strcmp (current->name, _DATA))
2515 else if (!strcmp (current->name, _BSS))
2521 section.s_align = (current->alignment_power
2522 ? 1 << current->alignment_power
2527 #ifdef COFF_IMAGE_WITH_PE
2528 /* suppress output of the sections if they are null. ld includes
2529 the bss and data sections even if there is no size assigned
2530 to them. NT loader doesn't like it if these section headers are
2531 included if the sections themselves are not needed */
2532 if (section.s_size == 0)
2533 internal_f.f_nscns--;
2538 if (coff_swap_scnhdr_out (abfd, §ion, &buff) == 0
2539 || bfd_write ((PTR) (&buff), 1, SCNHSZ, abfd) != SCNHSZ)
2544 /* PE stores COMDAT section information in the symbol table. If
2545 this section is supposed to have some COMDAT info, track down
2546 the symbol in the symbol table and modify it. */
2547 if ((current->flags & SEC_LINK_ONCE) != 0)
2549 unsigned int i, count;
2551 coff_symbol_type *csym;
2553 count = bfd_get_symcount (abfd);
2554 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
2556 /* Here *PSYM is the section symbol for CURRENT. */
2558 if (strcmp ((*psym)->name, current->name) == 0)
2560 csym = coff_symbol_from (abfd, *psym);
2562 || csym->native == NULL
2563 || csym->native->u.syment.n_numaux < 1
2564 || csym->native->u.syment.n_sclass != C_STAT
2565 || csym->native->u.syment.n_type != T_NULL)
2572 Note that we might not if we're converting the file from
2573 some other object file format. */
2576 combined_entry_type *aux;
2578 /* We don't touch the x_checksum field. The
2579 x_associated field is not currently supported. */
2581 aux = csym->native + 1;
2582 switch (current->flags & SEC_LINK_DUPLICATES)
2584 case SEC_LINK_DUPLICATES_DISCARD:
2585 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
2588 case SEC_LINK_DUPLICATES_ONE_ONLY:
2589 aux->u.auxent.x_scn.x_comdat =
2590 IMAGE_COMDAT_SELECT_NODUPLICATES;
2593 case SEC_LINK_DUPLICATES_SAME_SIZE:
2594 aux->u.auxent.x_scn.x_comdat =
2595 IMAGE_COMDAT_SELECT_SAME_SIZE;
2598 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
2599 aux->u.auxent.x_scn.x_comdat =
2600 IMAGE_COMDAT_SELECT_EXACT_MATCH;
2605 #endif /* COFF_WITH_PE */
2609 /* XCOFF handles overflows in the reloc and line number count fields
2610 by creating a new section header to hold the correct values. */
2611 for (current = abfd->sections; current != NULL; current = current->next)
2613 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2615 struct internal_scnhdr scnhdr;
2618 internal_f.f_nscns++;
2619 strncpy (&(scnhdr.s_name[0]), current->name, 8);
2620 scnhdr.s_paddr = current->reloc_count;
2621 scnhdr.s_vaddr = current->lineno_count;
2623 scnhdr.s_scnptr = 0;
2624 scnhdr.s_relptr = current->rel_filepos;
2625 scnhdr.s_lnnoptr = current->line_filepos;
2626 scnhdr.s_nreloc = current->target_index;
2627 scnhdr.s_nlnno = current->target_index;
2628 scnhdr.s_flags = STYP_OVRFLO;
2629 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
2630 || bfd_write ((PTR) &buff, 1, SCNHSZ, abfd) != SCNHSZ)
2636 /* OK, now set up the filehdr... */
2638 /* Don't include the internal abs section in the section count */
2641 We will NOT put a fucking timestamp in the header here. Every time you
2642 put it back, I will come in and take it out again. I'm sorry. This
2643 field does not belong here. We fill it with a 0 so it compares the
2644 same but is not a reasonable time. -- gnu@cygnus.com
2646 internal_f.f_timdat = 0;
2648 internal_f.f_flags = 0;
2650 if (abfd->flags & EXEC_P)
2651 internal_f.f_opthdr = AOUTSZ;
2654 internal_f.f_opthdr = 0;
2656 if (xcoff_data (abfd)->full_aouthdr)
2657 internal_f.f_opthdr = AOUTSZ;
2659 internal_f.f_opthdr = SMALL_AOUTSZ;
2664 internal_f.f_flags |= F_RELFLG;
2666 internal_f.f_flags |= F_LNNO;
2667 if (abfd->flags & EXEC_P)
2668 internal_f.f_flags |= F_EXEC;
2670 /* FIXME: this is wrong for PPC_PE! */
2671 if (bfd_little_endian (abfd))
2672 internal_f.f_flags |= F_AR32WR;
2674 internal_f.f_flags |= F_AR32W;
2677 FIXME, should do something about the other byte orders and
2682 if ((abfd->flags & DYNAMIC) != 0)
2683 internal_f.f_flags |= F_SHROBJ;
2684 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
2685 internal_f.f_flags |= F_DYNLOAD;
2688 memset (&internal_a, 0, sizeof internal_a);
2690 /* Set up architecture-dependent stuff */
2693 unsigned int magic = 0;
2694 unsigned short flags = 0;
2695 coff_set_flags (abfd, &magic, &flags);
2696 internal_f.f_magic = magic;
2697 internal_f.f_flags |= flags;
2698 /* ...and the "opt"hdr... */
2701 #ifdef ULTRA3 /* NYU's machine */
2702 /* FIXME: This is a bogus check. I really want to see if there
2703 * is a .shbss or a .shdata section, if so then set the magic
2704 * number to indicate a shared data executable.
2706 if (internal_f.f_nscns >= 7)
2707 internal_a.magic = SHMAGIC; /* Shared magic */
2710 internal_a.magic = NMAGIC; /* Assume separate i/d */
2711 #define __A_MAGIC_SET__
2714 /* FIXME: What are the a.out magic numbers for the i860? */
2715 internal_a.magic = 0;
2716 #define __A_MAGIC_SET__
2719 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
2720 #define __A_MAGIC_SET__
2723 #define __A_MAGIC_SET__
2724 internal_a.magic = PAGEMAGICBCS;
2728 #define __A_MAGIC_SET__
2729 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
2732 #if defined(M68) || defined(WE32K) || defined(M68K)
2733 #define __A_MAGIC_SET__
2735 internal_a.magic = LYNXCOFFMAGIC;
2737 #if defined(TARG_AUX)
2738 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
2739 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
2740 PAGEMAGICEXECSWAPPED);
2742 #if defined (PAGEMAGICPEXECPAGED)
2743 internal_a.magic = PAGEMAGICPEXECPAGED;
2745 #endif /* TARG_AUX */
2747 #endif /* M68 || WE32K || M68K */
2750 #define __A_MAGIC_SET__
2751 internal_a.magic = ZMAGIC;
2754 #define __A_MAGIC_SET__
2755 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
2758 #define __A_MAGIC_SET__
2760 internal_a.magic = LYNXCOFFMAGIC;
2762 internal_a.magic = ZMAGIC;
2767 #define __A_MAGIC_SET__
2769 internal_a.magic = LYNXCOFFMAGIC;
2774 #define __A_MAGIC_SET__
2775 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
2776 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
2777 RS6K_AOUTHDR_OMAGIC;
2780 #ifndef __A_MAGIC_SET__
2781 #include "Your aouthdr magic number is not being set!"
2783 #undef __A_MAGIC_SET__
2787 /* FIXME: Does anybody ever set this to another value? */
2788 internal_a.vstamp = 0;
2790 /* Now should write relocs, strings, syms */
2791 obj_sym_filepos (abfd) = sym_base;
2793 if (bfd_get_symcount (abfd) != 0)
2797 if (!coff_add_missing_symbols (abfd))
2800 if (!coff_renumber_symbols (abfd, &firstundef))
2802 coff_mangle_symbols (abfd);
2803 if (! coff_write_symbols (abfd))
2805 if (! coff_write_linenumbers (abfd))
2807 if (! coff_write_relocs (abfd, firstundef))
2810 #ifdef COFF_IMAGE_WITH_PE
2812 else if ((abfd->flags & EXEC_P) != 0)
2816 /* PowerPC PE appears to require that all executable files be
2817 rounded up to the page size. */
2820 BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
2822 || bfd_write (&b, 1, 1, abfd) != 1)
2828 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
2829 backend linker, and obj_raw_syment_count is not valid until after
2830 coff_write_symbols is called. */
2831 if (obj_raw_syment_count (abfd) != 0)
2833 internal_f.f_symptr = sym_base;
2835 /* AIX appears to require that F_RELFLG not be set if there are
2836 local symbols but no relocations. */
2837 internal_f.f_flags &=~ F_RELFLG;
2842 if (long_section_names)
2843 internal_f.f_symptr = sym_base;
2845 internal_f.f_symptr = 0;
2846 internal_f.f_flags |= F_LSYMS;
2851 internal_a.tsize = bfd_get_section_size_before_reloc (text_sec);
2852 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
2856 internal_a.dsize = bfd_get_section_size_before_reloc (data_sec);
2857 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
2861 internal_a.bsize = bfd_get_section_size_before_reloc (bss_sec);
2862 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
2863 internal_a.data_start = bss_sec->vma;
2866 internal_a.entry = bfd_get_start_address (abfd);
2867 internal_f.f_nsyms = obj_raw_syment_count (abfd);
2870 if (xcoff_data (abfd)->full_aouthdr)
2873 asection *loader_sec;
2875 internal_a.vstamp = 1;
2877 internal_a.o_snentry = xcoff_data (abfd)->snentry;
2878 if (internal_a.o_snentry == 0)
2879 internal_a.entry = (bfd_vma) -1;
2881 if (text_sec != NULL)
2883 internal_a.o_sntext = text_sec->target_index;
2884 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
2888 internal_a.o_sntext = 0;
2889 internal_a.o_algntext = 0;
2891 if (data_sec != NULL)
2893 internal_a.o_sndata = data_sec->target_index;
2894 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
2898 internal_a.o_sndata = 0;
2899 internal_a.o_algndata = 0;
2901 loader_sec = bfd_get_section_by_name (abfd, ".loader");
2902 if (loader_sec != NULL)
2903 internal_a.o_snloader = loader_sec->target_index;
2905 internal_a.o_snloader = 0;
2906 if (bss_sec != NULL)
2907 internal_a.o_snbss = bss_sec->target_index;
2909 internal_a.o_snbss = 0;
2911 toc = xcoff_data (abfd)->toc;
2912 internal_a.o_toc = toc;
2913 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
2915 internal_a.o_modtype = xcoff_data (abfd)->modtype;
2916 if (xcoff_data (abfd)->cputype != -1)
2917 internal_a.o_cputype = xcoff_data (abfd)->cputype;
2920 switch (bfd_get_arch (abfd))
2922 case bfd_arch_rs6000:
2923 internal_a.o_cputype = 4;
2925 case bfd_arch_powerpc:
2926 if (bfd_get_mach (abfd) == 0)
2927 internal_a.o_cputype = 3;
2929 internal_a.o_cputype = 1;
2935 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
2936 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
2940 /* now write them */
2941 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
2945 coff_swap_filehdr_out (abfd, (PTR) & internal_f, (PTR) buff);
2946 if (bfd_write ((PTR) buff, 1, FILHSZ, abfd) != FILHSZ)
2949 if (abfd->flags & EXEC_P)
2951 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
2952 include/coff/pe.h sets AOUTSZ == sizeof(PEAOUTHDR)) */
2954 coff_swap_aouthdr_out (abfd, (PTR) & internal_a, (PTR) buff);
2955 if (bfd_write ((PTR) buff, 1, AOUTSZ, abfd) != AOUTSZ)
2964 /* XCOFF seems to always write at least a small a.out header. */
2965 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff);
2966 if (xcoff_data (abfd)->full_aouthdr)
2969 size = SMALL_AOUTSZ;
2970 if (bfd_write ((PTR) &buff, 1, size, abfd) != size)
2979 coff_set_section_contents (abfd, section, location, offset, count)
2984 bfd_size_type count;
2986 if (abfd->output_has_begun == false) /* set by bfd.c handler */
2987 coff_compute_section_file_positions (abfd);
2991 /* The physical address field of a .lib section is used to hold the
2992 number of shared libraries in the section. This code counts the
2993 number of sections being written, and increments the lma field
2996 I have found no documentation on the contents of this section.
2997 Experimentation indicates that the section contains zero or more
2998 records, each of which has the following structure:
3000 - a (four byte) word holding the length of this record, in words,
3001 - a word that always seems to be set to "2",
3002 - the path to a shared library, null-terminated and then padded
3003 to a whole word boundary.
3005 bfd_assert calls have been added to alert if an attempt is made
3006 to write a section which doesn't follow these assumptions. The
3007 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
3008 <robertl@arnet.com> (Thanks!).
3010 Gvran Uddeborg <gvran@uddeborg.pp.se> */
3012 if (strcmp (section->name, _LIB) == 0)
3014 bfd_byte *rec, *recend;
3016 rec = (bfd_byte *) location;
3017 recend = rec + count;
3018 while (rec < recend)
3021 rec += bfd_get_32 (abfd, rec) * 4;
3024 BFD_ASSERT (rec == recend);
3029 /* Don't write out bss sections - one way to do this is to
3030 see if the filepos has not been set. */
3031 if (section->filepos == 0)
3034 if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0)
3039 return (bfd_write (location, 1, count, abfd) == count) ? true : false;
3045 coff_close_and_cleanup (abfd)
3048 if (!bfd_read_p (abfd))
3049 switch (abfd->format)
3052 if (!_bfd_write_archive_contents (abfd))
3056 if (!coff_write_object_contents (abfd))
3060 bfd_set_error (bfd_error_invalid_operation);
3064 /* We depend on bfd_close to free all the memory on the obstack. */
3065 /* FIXME if bfd_release is not using obstacks! */
3072 buy_and_read (abfd, where, seek_direction, size)
3078 PTR area = (PTR) bfd_alloc (abfd, size);
3081 if (bfd_seek (abfd, where, seek_direction) != 0
3082 || bfd_read (area, 1, size, abfd) != size)
3085 } /* buy_and_read() */
3091 Creating the linenumber table is done by reading in the entire
3092 coff linenumber table, and creating another table for internal use.
3094 A coff linenumber table is structured so that each function
3095 is marked as having a line number of 0. Each line within the
3096 function is an offset from the first line in the function. The
3097 base of the line number information for the table is stored in
3098 the symbol associated with the function.
3100 The information is copied from the external to the internal
3101 table, and each symbol which marks a function is marked by
3104 How does this work ?
3109 coff_slurp_line_table (abfd, asect)
3113 LINENO *native_lineno;
3114 alent *lineno_cache;
3116 BFD_ASSERT (asect->lineno == (alent *) NULL);
3118 native_lineno = (LINENO *) buy_and_read (abfd,
3119 asect->line_filepos,
3122 asect->lineno_count));
3124 (alent *) bfd_alloc (abfd, (size_t) ((asect->lineno_count + 1) * sizeof (alent)));
3125 if (lineno_cache == NULL)
3129 unsigned int counter = 0;
3130 alent *cache_ptr = lineno_cache;
3131 LINENO *src = native_lineno;
3133 while (counter < asect->lineno_count)
3135 struct internal_lineno dst;
3136 coff_swap_lineno_in (abfd, src, &dst);
3137 cache_ptr->line_number = dst.l_lnno;
3139 if (cache_ptr->line_number == 0)
3141 coff_symbol_type *sym =
3142 (coff_symbol_type *) (dst.l_addr.l_symndx
3143 + obj_raw_syments (abfd))->u.syment._n._n_n._n_zeroes;
3144 cache_ptr->u.sym = (asymbol *) sym;
3145 if (sym->lineno != NULL)
3147 (*_bfd_error_handler)
3148 ("%s: warning: duplicate line number information for `%s'",
3149 bfd_get_filename (abfd),
3150 bfd_asymbol_name (&sym->symbol));
3152 sym->lineno = cache_ptr;
3156 cache_ptr->u.offset = dst.l_addr.l_paddr
3157 - bfd_section_vma (abfd, asect);
3158 } /* If no linenumber expect a symbol index */
3164 cache_ptr->line_number = 0;
3167 asect->lineno = lineno_cache;
3168 /* FIXME, free native_lineno here, or use alloca or something. */
3173 coff_slurp_symbol_table (abfd)
3176 combined_entry_type *native_symbols;
3177 coff_symbol_type *cached_area;
3178 unsigned int *table_ptr;
3180 unsigned int number_of_symbols = 0;
3182 if (obj_symbols (abfd))
3185 /* Read in the symbol table */
3186 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
3191 /* Allocate enough room for all the symbols in cached form */
3192 cached_area = ((coff_symbol_type *)
3194 (obj_raw_syment_count (abfd)
3195 * sizeof (coff_symbol_type))));
3197 if (cached_area == NULL)
3199 table_ptr = ((unsigned int *)
3201 (obj_raw_syment_count (abfd)
3202 * sizeof (unsigned int))));
3204 if (table_ptr == NULL)
3208 coff_symbol_type *dst = cached_area;
3209 unsigned int last_native_index = obj_raw_syment_count (abfd);
3210 unsigned int this_index = 0;
3211 while (this_index < last_native_index)
3213 combined_entry_type *src = native_symbols + this_index;
3214 table_ptr[this_index] = number_of_symbols;
3215 dst->symbol.the_bfd = abfd;
3217 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
3218 /* We use the native name field to point to the cached field. */
3219 src->u.syment._n._n_n._n_zeroes = (long) dst;
3220 dst->symbol.section = coff_section_from_bfd_index (abfd,
3221 src->u.syment.n_scnum);
3222 dst->symbol.flags = 0;
3223 dst->done_lineno = false;
3225 switch (src->u.syment.n_sclass)
3230 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
3231 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
3232 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
3234 /* Fall through to next case */
3243 /* PE uses storage class 0x68 to denote a section symbol */
3245 /* PE uses storage class 0x67 for a weak external symbol. */
3248 if ((src->u.syment.n_scnum) == 0)
3250 if ((src->u.syment.n_value) == 0)
3252 dst->symbol.section = bfd_und_section_ptr;
3253 dst->symbol.value = 0;
3257 dst->symbol.section = bfd_com_section_ptr;
3258 dst->symbol.value = (src->u.syment.n_value);
3263 /* Base the value as an index from the base of the
3266 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
3267 dst->symbol.value = (src->u.syment.n_value
3268 - dst->symbol.section->vma);
3270 if (ISFCN ((src->u.syment.n_type)))
3272 /* A function ext does not go at the end of a
3274 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
3279 /* A C_HIDEXT symbol is not global. */
3280 if (src->u.syment.n_sclass == C_HIDEXT)
3281 dst->symbol.flags = BSF_LOCAL;
3282 /* A symbol with a csect entry should not go at the end. */
3283 if (src->u.syment.n_numaux > 0)
3284 dst->symbol.flags |= BSF_NOT_AT_END;
3288 if (src->u.syment.n_sclass == C_NT_WEAK)
3289 dst->symbol.flags = BSF_WEAK;
3294 case C_STAT: /* static */
3296 case C_LEAFSTAT: /* static leaf procedure */
3298 case C_LABEL: /* label */
3299 if (src->u.syment.n_scnum == -2)
3300 dst->symbol.flags = BSF_DEBUGGING;
3302 dst->symbol.flags = BSF_LOCAL;
3304 /* Base the value as an index from the base of the
3305 section, if there is one. */
3306 if (dst->symbol.section)
3307 dst->symbol.value = (src->u.syment.n_value
3308 - dst->symbol.section->vma);
3310 dst->symbol.value = src->u.syment.n_value;
3313 case C_MOS: /* member of structure */
3314 case C_EOS: /* end of structure */
3315 #ifdef NOTDEF /* C_AUTOARG has the same value */
3317 case C_GLBLREG: /* A29k-specific storage class */
3320 case C_REGPARM: /* register parameter */
3321 case C_REG: /* register variable */
3323 case C_AUTOARG: /* 960-specific storage class */
3325 case C_TPDEF: /* type definition */
3327 case C_AUTO: /* automatic variable */
3328 case C_FIELD: /* bit field */
3329 case C_ENTAG: /* enumeration tag */
3330 case C_MOE: /* member of enumeration */
3331 case C_MOU: /* member of union */
3332 case C_UNTAG: /* union tag */
3333 dst->symbol.flags = BSF_DEBUGGING;
3334 dst->symbol.value = (src->u.syment.n_value);
3337 case C_FILE: /* file name */
3338 case C_STRTAG: /* structure tag */
3353 dst->symbol.flags = BSF_DEBUGGING;
3354 dst->symbol.value = (src->u.syment.n_value);
3358 case C_BINCL: /* beginning of include file */
3359 case C_EINCL: /* ending of include file */
3360 /* The value is actually a pointer into the line numbers
3361 of the file. We locate the line number entry, and
3362 set the section to the section which contains it, and
3363 the value to the index in that section. */
3367 dst->symbol.flags = BSF_DEBUGGING;
3368 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3369 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
3370 && ((file_ptr) (sec->line_filepos
3371 + sec->lineno_count * LINESZ)
3372 > (file_ptr) src->u.syment.n_value))
3375 dst->symbol.value = 0;
3378 dst->symbol.section = sec;
3379 dst->symbol.value = ((src->u.syment.n_value
3380 - sec->line_filepos)
3388 dst->symbol.flags = BSF_DEBUGGING;
3390 /* The value is actually a symbol index. Save a pointer
3391 to the symbol instead of the index. FIXME: This
3392 should use a union. */
3393 src->u.syment.n_value =
3394 (long) (native_symbols + src->u.syment.n_value);
3395 dst->symbol.value = src->u.syment.n_value;
3400 case C_BLOCK: /* ".bb" or ".eb" */
3401 case C_FCN: /* ".bf" or ".ef" */
3402 case C_EFCN: /* physical end of function */
3403 dst->symbol.flags = BSF_LOCAL;
3404 /* Base the value as an index from the base of the
3406 dst->symbol.value = (src->u.syment.n_value
3407 - dst->symbol.section->vma);
3411 case C_EXTDEF: /* external definition */
3412 case C_ULABEL: /* undefined label */
3413 case C_USTATIC: /* undefined static */
3414 #ifndef COFF_WITH_PE
3415 /* C_LINE in regular coff is 0x68. NT has taken over this storage
3416 class to represent a section symbol */
3417 case C_LINE: /* line # reformatted as symbol table entry */
3418 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
3419 case C_ALIAS: /* duplicate tag */
3421 case C_HIDDEN: /* ext symbol in dmert public lib */
3423 (*_bfd_error_handler)
3424 ("%s: Unrecognized storage class %d for %s symbol `%s'",
3425 bfd_get_filename (abfd), src->u.syment.n_sclass,
3426 dst->symbol.section->name, dst->symbol.name);
3427 dst->symbol.flags = BSF_DEBUGGING;
3428 dst->symbol.value = (src->u.syment.n_value);
3432 /* BFD_ASSERT(dst->symbol.flags != 0);*/
3436 dst->symbol.udata.i = 0;
3437 dst->lineno = (alent *) NULL;
3438 this_index += (src->u.syment.n_numaux) + 1;
3440 number_of_symbols++;
3441 } /* walk the native symtab */
3442 } /* bfdize the native symtab */
3444 obj_symbols (abfd) = cached_area;
3445 obj_raw_syments (abfd) = native_symbols;
3447 bfd_get_symcount (abfd) = number_of_symbols;
3448 obj_convert (abfd) = table_ptr;
3449 /* Slurp the line tables for each section too */
3455 coff_slurp_line_table (abfd, p);
3460 } /* coff_slurp_symbol_table() */
3462 /* Check whether a symbol is globally visible. This is used by the
3463 COFF backend linker code in cofflink.c, since a couple of targets
3464 have globally visible symbols which are not class C_EXT. This
3465 function need not handle the case of n_class == C_EXT. */
3467 #undef OTHER_GLOBAL_CLASS
3470 #define OTHER_GLOBAL_CLASS C_LEAFEXT
3474 #define OTHER_GLOBAL_CLASS C_SECTION
3477 #ifdef OTHER_GLOBAL_CLASS
3480 coff_sym_is_global (abfd, syment)
3482 struct internal_syment *syment;
3484 if (syment->n_sclass == OTHER_GLOBAL_CLASS)
3489 #undef OTHER_GLOBAL_CLASS
3491 #else /* ! defined (OTHER_GLOBAL_CLASS) */
3493 /* sym_is_global should not be defined if it has nothing to do. */
3495 #define coff_sym_is_global 0
3497 #endif /* ! defined (OTHER_GLOBAL_CLASS) */
3503 Coff relocations are easily transformed into the internal BFD form
3506 Reading a coff relocation table is done in the following stages:
3508 o Read the entire coff relocation table into memory.
3510 o Process each relocation in turn; first swap it from the
3511 external to the internal form.
3513 o Turn the symbol referenced in the relocation's symbol index
3514 into a pointer into the canonical symbol table.
3515 This table is the same as the one returned by a call to
3516 @code{bfd_canonicalize_symtab}. The back end will call that
3517 routine and save the result if a canonicalization hasn't been done.
3519 o The reloc index is turned into a pointer to a howto
3520 structure, in a back end specific way. For instance, the 386
3521 and 960 use the @code{r_type} to directly produce an index
3522 into a howto table vector; the 88k subtracts a number from the
3523 @code{r_type} field and creates an addend field.
3529 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
3531 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
3532 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
3533 coffsym = (obj_symbols (abfd) \
3534 + (cache_ptr->sym_ptr_ptr - symbols)); \
3536 coffsym = coff_symbol_from (abfd, ptr); \
3537 if (coffsym != (coff_symbol_type *) NULL \
3538 && coffsym->native->u.syment.n_scnum == 0) \
3539 cache_ptr->addend = 0; \
3540 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
3541 && ptr->section != (asection *) NULL) \
3542 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
3544 cache_ptr->addend = 0; \
3549 coff_slurp_reloc_table (abfd, asect, symbols)
3554 RELOC *native_relocs;
3555 arelent *reloc_cache;
3560 if (asect->relocation)
3562 if (asect->reloc_count == 0)
3564 if (asect->flags & SEC_CONSTRUCTOR)
3566 if (!coff_slurp_symbol_table (abfd))
3569 (RELOC *) buy_and_read (abfd,
3573 asect->reloc_count));
3574 reloc_cache = (arelent *)
3575 bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent)));
3577 if (reloc_cache == NULL)
3581 for (idx = 0; idx < asect->reloc_count; idx++)
3583 #ifdef RELOC_PROCESSING
3584 struct internal_reloc dst;
3585 struct external_reloc *src;
3587 cache_ptr = reloc_cache + idx;
3588 src = native_relocs + idx;
3589 coff_swap_reloc_in (abfd, src, &dst);
3591 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
3593 struct internal_reloc dst;
3595 struct external_reloc *src;
3597 cache_ptr = reloc_cache + idx;
3598 src = native_relocs + idx;
3600 coff_swap_reloc_in (abfd, src, &dst);
3603 cache_ptr->address = dst.r_vaddr;
3605 if (dst.r_symndx != -1)
3607 /* @@ Should never be greater than count of symbols! */
3608 if (dst.r_symndx >= obj_conv_table_size (abfd))
3610 cache_ptr->sym_ptr_ptr = symbols + obj_convert (abfd)[dst.r_symndx];
3611 ptr = *(cache_ptr->sym_ptr_ptr);
3615 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
3619 /* The symbols definitions that we have read in have been
3620 relocated as if their sections started at 0. But the offsets
3621 refering to the symbols in the raw data have not been
3622 modified, so we have to have a negative addend to compensate.
3624 Note that symbols which used to be common must be left alone */
3626 /* Calculate any reloc addend by looking at the symbol */
3627 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
3629 cache_ptr->address -= asect->vma;
3630 /* !! cache_ptr->section = (asection *) NULL;*/
3632 /* Fill in the cache_ptr->howto field from dst.r_type */
3633 RTYPE2HOWTO (cache_ptr, &dst);
3638 asect->relocation = reloc_cache;
3642 #ifndef coff_rtype_to_howto
3645 /* Get the howto structure for a reloc. This is only used if the file
3646 including this one defines coff_relocate_section to be
3647 _bfd_coff_generic_relocate_section, so it is OK if it does not
3648 always work. It is the responsibility of the including file to
3649 make sure it is reasonable if it is needed. */
3651 static reloc_howto_type *coff_rtype_to_howto
3652 PARAMS ((bfd *, asection *, struct internal_reloc *,
3653 struct coff_link_hash_entry *, struct internal_syment *,
3657 static reloc_howto_type *
3658 coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
3661 struct internal_reloc *rel;
3662 struct coff_link_hash_entry *h;
3663 struct internal_syment *sym;
3668 RTYPE2HOWTO (&genrel, rel);
3669 return genrel.howto;
3672 #else /* ! defined (RTYPE2HOWTO) */
3674 #define coff_rtype_to_howto NULL
3676 #endif /* ! defined (RTYPE2HOWTO) */
3677 #endif /* ! defined (coff_rtype_to_howto) */
3679 /* This is stupid. This function should be a boolean predicate. */
3681 coff_canonicalize_reloc (abfd, section, relptr, symbols)
3687 arelent *tblptr = section->relocation;
3688 unsigned int count = 0;
3691 if (section->flags & SEC_CONSTRUCTOR)
3693 /* this section has relocs made up by us, they are not in the
3694 file, so take them out of their chain and place them into
3695 the data area provided */
3696 arelent_chain *chain = section->constructor_chain;
3697 for (count = 0; count < section->reloc_count; count++)
3699 *relptr++ = &chain->relent;
3700 chain = chain->next;
3706 if (! coff_slurp_reloc_table (abfd, section, symbols))
3709 tblptr = section->relocation;
3711 for (; count++ < section->reloc_count;)
3712 *relptr++ = tblptr++;
3717 return section->reloc_count;
3722 coff_sym_filepos (abfd)
3725 return obj_sym_filepos (abfd);
3729 #ifndef coff_reloc16_estimate
3730 #define coff_reloc16_estimate dummy_reloc16_estimate
3733 dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
3735 asection *input_section;
3737 unsigned int shrink;
3738 struct bfd_link_info *link_info;
3745 #ifndef coff_reloc16_extra_cases
3746 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
3747 /* This works even if abort is not declared in any header file. */
3749 dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
3752 struct bfd_link_info *link_info;
3753 struct bfd_link_order *link_order;
3756 unsigned int *src_ptr;
3757 unsigned int *dst_ptr;
3763 /* If coff_relocate_section is defined, we can use the optimized COFF
3764 backend linker. Otherwise we must continue to use the old linker. */
3765 #ifdef coff_relocate_section
3766 #ifndef coff_bfd_link_hash_table_create
3767 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
3769 #ifndef coff_bfd_link_add_symbols
3770 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
3772 #ifndef coff_bfd_final_link
3773 #define coff_bfd_final_link _bfd_coff_final_link
3775 #else /* ! defined (coff_relocate_section) */
3776 #define coff_relocate_section NULL
3777 #ifndef coff_bfd_link_hash_table_create
3778 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
3780 #ifndef coff_bfd_link_add_symbols
3781 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
3783 #define coff_bfd_final_link _bfd_generic_final_link
3784 #endif /* ! defined (coff_relocate_section) */
3785 #define coff_bfd_link_split_section _bfd_generic_link_split_section
3787 #ifndef coff_start_final_link
3788 #define coff_start_final_link NULL
3791 #ifndef coff_adjust_symndx
3792 #define coff_adjust_symndx NULL
3795 #ifndef coff_link_add_one_symbol
3796 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
3799 static CONST bfd_coff_backend_data bfd_coff_std_swap_table =
3801 coff_swap_aux_in, coff_swap_sym_in, coff_swap_lineno_in,
3802 coff_swap_aux_out, coff_swap_sym_out,
3803 coff_swap_lineno_out, coff_swap_reloc_out,
3804 coff_swap_filehdr_out, coff_swap_aouthdr_out,
3805 coff_swap_scnhdr_out,
3806 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ,
3807 #ifdef COFF_LONG_FILENAMES
3812 #ifdef COFF_LONG_SECTION_NAMES
3817 coff_swap_filehdr_in, coff_swap_aouthdr_in, coff_swap_scnhdr_in,
3818 coff_swap_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
3819 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
3820 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
3821 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
3822 coff_sym_is_global, coff_compute_section_file_positions,
3823 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
3824 coff_adjust_symndx, coff_link_add_one_symbol
3827 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
3828 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
3829 #define coff_get_section_contents _bfd_generic_get_section_contents
3831 #ifndef coff_bfd_copy_private_symbol_data
3832 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
3835 #ifndef coff_bfd_copy_private_section_data
3836 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
3839 #ifndef coff_bfd_copy_private_bfd_data
3840 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
3843 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
3844 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
3846 #ifndef coff_bfd_print_private_bfd_data
3847 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
3850 #ifndef coff_bfd_is_local_label
3851 #define coff_bfd_is_local_label bfd_generic_is_local_label
3853 #ifndef coff_read_minisymbols
3854 #define coff_read_minisymbols _bfd_generic_read_minisymbols
3856 #ifndef coff_minisymbol_to_symbol
3857 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
3860 /* The reloc lookup routine must be supplied by each individual COFF
3862 #ifndef coff_bfd_reloc_type_lookup
3863 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
3866 #ifndef coff_bfd_get_relocated_section_contents
3867 #define coff_bfd_get_relocated_section_contents \
3868 bfd_generic_get_relocated_section_contents
3870 #ifndef coff_bfd_relax_section
3871 #define coff_bfd_relax_section bfd_generic_relax_section