1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 Most of this hacked by Steve Chamberlain,
32 BFD supports a number of different flavours of coff format.
33 The major differences between formats are the sizes and
34 alignments of fields in structures on disk, and the occasional
37 Coff in all its varieties is implemented with a few common
38 files and a number of implementation specific files. For
39 example, The 88k bcs coff format is implemented in the file
40 @file{coff-m88k.c}. This file @code{#include}s
41 @file{coff/m88k.h} which defines the external structure of the
42 coff format for the 88k, and @file{coff/internal.h} which
43 defines the internal structure. @file{coff-m88k.c} also
44 defines the relocations used by the 88k format
47 The Intel i960 processor version of coff is implemented in
48 @file{coff-i960.c}. This file has the same structure as
49 @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
50 rather than @file{coff-m88k.h}.
53 Porting to a new version of coff
55 The recommended method is to select from the existing
56 implementations the version of coff which is most like the one
57 you want to use. For example, we'll say that i386 coff is
58 the one you select, and that your coff flavour is called foo.
59 Copy @file{i386coff.c} to @file{foocoff.c}, copy
60 @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
61 and add the lines to @file{targets.c} and @file{Makefile.in}
62 so that your new back end is used. Alter the shapes of the
63 structures in @file{../include/coff/foo.h} so that they match
64 what you need. You will probably also have to add
65 @code{#ifdef}s to the code in @file{coff/internal.h} and
66 @file{coffcode.h} if your version of coff is too wild.
68 You can verify that your new BFD backend works quite simply by
69 building @file{objdump} from the @file{binutils} directory,
70 and making sure that its version of what's going on and your
71 host system's idea (assuming it has the pretty standard coff
72 dump utility, usually called @code{att-dump} or just
73 @code{dump}) are the same. Then clean up your code, and send
74 what you've done to Cygnus. Then your stuff will be in the
75 next release, and you won't have to keep integrating it.
78 How the coff backend works
83 The Coff backend is split into generic routines that are
84 applicable to any Coff target and routines that are specific
85 to a particular target. The target-specific routines are
86 further split into ones which are basically the same for all
87 Coff targets except that they use the external symbol format
88 or use different values for certain constants.
90 The generic routines are in @file{coffgen.c}. These routines
91 work for any Coff target. They use some hooks into the target
92 specific code; the hooks are in a @code{bfd_coff_backend_data}
93 structure, one of which exists for each target.
95 The essentially similar target-specific routines are in
96 @file{coffcode.h}. This header file includes executable C code.
97 The various Coff targets first include the appropriate Coff
98 header file, make any special defines that are needed, and
99 then include @file{coffcode.h}.
101 Some of the Coff targets then also have additional routines in
102 the target source file itself.
104 For example, @file{coff-i960.c} includes
105 @file{coff/internal.h} and @file{coff/i960.h}. It then
106 defines a few constants, such as @code{I960}, and includes
107 @file{coffcode.h}. Since the i960 has complex relocation
108 types, @file{coff-i960.c} also includes some code to
109 manipulate the i960 relocs. This code is not in
110 @file{coffcode.h} because it would not be used by any other
116 Each flavour of coff supported in BFD has its own header file
117 describing the external layout of the structures. There is also
118 an internal description of the coff layout, in
119 @file{coff/internal.h}. A major function of the
120 coff backend is swapping the bytes and twiddling the bits to
121 translate the external form of the structures into the normal
122 internal form. This is all performed in the
123 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
124 elements are different sizes between different versions of
125 coff; it is the duty of the coff version specific include file
126 to override the definitions of various packing routines in
127 @file{coffcode.h}. E.g., the size of line number entry in coff is
128 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
129 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
130 correct one. No doubt, some day someone will find a version of
131 coff which has a varying field size not catered to at the
132 moment. To port BFD, that person will have to add more @code{#defines}.
133 Three of the bit twiddling routines are exported to
134 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
135 and @code{coff_swap_lineno_in}. @code{GDB} reads the symbol
136 table on its own, but uses BFD to fix things up. More of the
137 bit twiddlers are exported for @code{gas};
138 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
139 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
140 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
141 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
142 of all the symbol table and reloc drudgery itself, thereby
143 saving the internal BFD overhead, but uses BFD to swap things
144 on the way out, making cross ports much safer. Doing so also
145 allows BFD (and thus the linker) to use the same header files
146 as @code{gas}, which makes one avenue to disaster disappear.
151 The simple canonical form for symbols used by BFD is not rich
152 enough to keep all the information available in a coff symbol
153 table. The back end gets around this problem by keeping the original
154 symbol table around, "behind the scenes".
156 When a symbol table is requested (through a call to
157 @code{bfd_canonicalize_symtab}), a request gets through to
158 @code{coff_get_normalized_symtab}. This reads the symbol table from
159 the coff file and swaps all the structures inside into the
160 internal form. It also fixes up all the pointers in the table
161 (represented in the file by offsets from the first symbol in
162 the table) into physical pointers to elements in the new
163 internal table. This involves some work since the meanings of
164 fields change depending upon context: a field that is a
165 pointer to another structure in the symbol table at one moment
166 may be the size in bytes of a structure at the next. Another
167 pass is made over the table. All symbols which mark file names
168 (<<C_FILE>> symbols) are modified so that the internal
169 string points to the value in the auxent (the real filename)
170 rather than the normal text associated with the symbol
173 At this time the symbol names are moved around. Coff stores
174 all symbols less than nine characters long physically
175 within the symbol table; longer strings are kept at the end of
176 the file in the string table. This pass moves all strings
177 into memory and replaces them with pointers to the strings.
179 The symbol table is massaged once again, this time to create
180 the canonical table used by the BFD application. Each symbol
181 is inspected in turn, and a decision made (using the
182 @code{sclass} field) about the various flags to set in the
183 @code{asymbol}. @xref{Symbols}. The generated canonical table
184 shares strings with the hidden internal symbol table.
186 Any linenumbers are read from the coff file too, and attached
187 to the symbols which own the functions the linenumbers belong to.
192 Writing a symbol to a coff file which didn't come from a coff
193 file will lose any debugging information. The @code{asymbol}
194 structure remembers the BFD from which the symbol was taken, and on
195 output the back end makes sure that the same destination target as
196 source target is present.
198 When the symbols have come from a coff file then all the
199 debugging information is preserved.
201 Symbol tables are provided for writing to the back end in a
202 vector of pointers to pointers. This allows applications like
203 the linker to accumulate and output large symbol tables
204 without having to do too much byte copying.
206 This function runs through the provided symbol table and
207 patches each symbol marked as a file place holder
208 (@code{C_FILE}) to point to the next file place holder in the
209 list. It also marks each @code{offset} field in the list with
210 the offset from the first symbol of the current symbol.
212 Another function of this procedure is to turn the canonical
213 value form of BFD into the form used by coff. Internally, BFD
214 expects symbol values to be offsets from a section base; so a
215 symbol physically at 0x120, but in a section starting at
216 0x100, would have the value 0x20. Coff expects symbols to
217 contain their final value, so symbols have their values
218 changed at this point to reflect their sum with their owning
219 section. This transformation uses the
220 <<output_section>> field of the @code{asymbol}'s
221 @code{asection} @xref{Sections}.
223 o <<coff_mangle_symbols>>
225 This routine runs though the provided symbol table and uses
226 the offsets generated by the previous pass and the pointers
227 generated when the symbol table was read in to create the
228 structured hierachy required by coff. It changes each pointer
229 to a symbol into the index into the symbol table of the asymbol.
231 o <<coff_write_symbols>>
233 This routine runs through the symbol table and patches up the
234 symbols from their internal form into the coff way, calls the
235 bit twiddlers, and writes out the table to the file.
244 The hidden information for an <<asymbol>> is described in a
245 <<combined_entry_type>>:
249 .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 coff_slurp_symbol_table. *}
273 . unsigned int fix_line : 1;
275 . {* The container for the symbol structure as read and translated
279 . union internal_auxent auxent;
280 . struct internal_syment syment;
282 .} combined_entry_type;
285 .{* Each canonical asymbol really looks like this: *}
287 .typedef struct coff_symbol_struct
289 . {* The actual symbol which the rest of BFD works with *}
292 . {* A pointer to the hidden information for this symbol *}
293 . combined_entry_type *native;
295 . {* A pointer to the linenumber information for this symbol *}
296 . struct lineno_cache_entry *lineno;
298 . {* Have the line numbers been relocated yet ? *}
299 . boolean done_lineno;
307 #include "coffswap.h"
310 #define STRING_SIZE_SIZE (4)
312 static long sec_to_styp_flags PARAMS ((const char *, flagword));
313 static boolean styp_to_sec_flags
314 PARAMS ((bfd *, PTR, const char *, asection *, flagword *));
315 static boolean coff_bad_format_hook PARAMS ((bfd *, PTR));
316 static void coff_set_custom_section_alignment
317 PARAMS ((bfd *, asection *, const struct coff_section_alignment_entry *,
318 const unsigned int));
319 static boolean coff_new_section_hook PARAMS ((bfd *, asection *));
320 static boolean coff_set_arch_mach_hook PARAMS ((bfd *, PTR));
321 static boolean coff_write_relocs PARAMS ((bfd *, int));
322 static boolean coff_set_flags
323 PARAMS ((bfd *, unsigned int *, unsigned short *));
324 static boolean coff_set_arch_mach
325 PARAMS ((bfd *, enum bfd_architecture, unsigned long)) ATTRIBUTE_UNUSED;
326 static boolean coff_compute_section_file_positions PARAMS ((bfd *));
327 static boolean coff_write_object_contents PARAMS ((bfd *)) ATTRIBUTE_UNUSED;
328 static boolean coff_set_section_contents
329 PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
330 static PTR buy_and_read PARAMS ((bfd *, file_ptr, bfd_size_type));
331 static boolean coff_slurp_line_table PARAMS ((bfd *, asection *));
332 static boolean coff_slurp_symbol_table PARAMS ((bfd *));
333 static enum coff_symbol_classification coff_classify_symbol
334 PARAMS ((bfd *, struct internal_syment *));
335 static boolean coff_slurp_reloc_table PARAMS ((bfd *, asection *, asymbol **));
336 static long coff_canonicalize_reloc
337 PARAMS ((bfd *, asection *, arelent **, asymbol **));
338 #ifndef coff_mkobject_hook
339 static PTR coff_mkobject_hook PARAMS ((bfd *, PTR, PTR));
342 static flagword handle_COMDAT PARAMS ((bfd *, flagword, PTR, const char *, asection *));
344 #ifdef COFF_IMAGE_WITH_PE
345 static boolean coff_read_word PARAMS ((bfd *, unsigned int *));
346 static unsigned int coff_compute_checksum PARAMS ((bfd *));
347 static boolean coff_apply_checksum PARAMS ((bfd *));
350 /* void warning(); */
352 /* Return a word with STYP_* (scnhdr.s_flags) flags set to represent
353 the incoming SEC_* flags. The inverse of this function is
354 styp_to_sec_flags(). NOTE: If you add to/change this routine, you
355 should probably mirror the changes in styp_to_sec_flags(). */
359 /* Macros for setting debugging flags. */
361 #define STYP_XCOFF_DEBUG STYP_DEBUG
363 #define STYP_XCOFF_DEBUG STYP_INFO
366 #ifdef COFF_ALIGN_IN_S_FLAGS
367 #define STYP_DEBUG_INFO STYP_DSECT
369 #define STYP_DEBUG_INFO STYP_INFO
373 sec_to_styp_flags (sec_name, sec_flags)
374 const char *sec_name;
379 if (!strcmp (sec_name, _TEXT))
381 styp_flags = STYP_TEXT;
383 else if (!strcmp (sec_name, _DATA))
385 styp_flags = STYP_DATA;
387 else if (!strcmp (sec_name, _BSS))
389 styp_flags = STYP_BSS;
392 else if (!strcmp (sec_name, _COMMENT))
394 styp_flags = STYP_INFO;
395 #endif /* _COMMENT */
398 else if (!strcmp (sec_name, _LIB))
400 styp_flags = STYP_LIB;
404 else if (!strcmp (sec_name, _LIT))
406 styp_flags = STYP_LIT;
409 else if (!strncmp (sec_name, ".debug", 6))
411 /* Handle the XCOFF debug section and DWARF2 debug sections. */
413 styp_flags = STYP_XCOFF_DEBUG;
415 styp_flags = STYP_DEBUG_INFO;
417 else if (!strncmp (sec_name, ".stab", 5))
419 styp_flags = STYP_DEBUG_INFO;
421 #ifdef COFF_LONG_SECTION_NAMES
422 else if (!strncmp (sec_name, ".gnu.linkonce.wi.", 17))
424 styp_flags = STYP_DEBUG_INFO;
428 else if (!strcmp (sec_name, _PAD))
430 styp_flags = STYP_PAD;
432 else if (!strcmp (sec_name, _LOADER))
434 styp_flags = STYP_LOADER;
436 else if (!strcmp (sec_name, _EXCEPT))
438 styp_flags = STYP_EXCEPT;
440 else if (!strcmp (sec_name, _TYPCHK))
442 styp_flags = STYP_TYPCHK;
445 /* Try and figure out what it should be */
446 else if (sec_flags & SEC_CODE)
448 styp_flags = STYP_TEXT;
450 else if (sec_flags & SEC_DATA)
452 styp_flags = STYP_DATA;
454 else if (sec_flags & SEC_READONLY)
456 #ifdef STYP_LIT /* 29k readonly text/data section */
457 styp_flags = STYP_LIT;
459 styp_flags = STYP_TEXT;
460 #endif /* STYP_LIT */
462 else if (sec_flags & SEC_LOAD)
464 styp_flags = STYP_TEXT;
466 else if (sec_flags & SEC_ALLOC)
468 styp_flags = STYP_BSS;
472 if (sec_flags & SEC_CLINK)
473 styp_flags |= STYP_CLINK;
477 if (sec_flags & SEC_BLOCK)
478 styp_flags |= STYP_BLOCK;
482 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
483 styp_flags |= STYP_NOLOAD;
489 #else /* COFF_WITH_PE */
491 /* The PE version; see above for the general comments. The non-PE
492 case seems to be more guessing, and breaks PE format; specifically,
493 .rdata is readonly, but it sure ain't text. Really, all this
494 should be set up properly in gas (or whatever assembler is in use),
495 and honor whatever objcopy/strip, etc. sent us as input. */
498 sec_to_styp_flags (sec_name, sec_flags)
499 const char *sec_name ATTRIBUTE_UNUSED;
504 /* caution: there are at least three groups of symbols that have
505 very similar bits and meanings: IMAGE_SCN*, SEC_*, and STYP_*.
506 SEC_* are the BFD internal flags, used for generic BFD
507 information. STYP_* are the COFF section flags which appear in
508 COFF files. IMAGE_SCN_* are the PE section flags which appear in
509 PE files. The STYP_* flags and the IMAGE_SCN_* flags overlap,
510 but there are more IMAGE_SCN_* flags. */
515 if ((sec_flags & SEC_CODE) != 0)
516 styp_flags |= IMAGE_SCN_CNT_CODE;
517 if ((sec_flags & SEC_DATA) != 0)
518 styp_flags |= IMAGE_SCN_CNT_INITIALIZED_DATA;
519 if ((sec_flags & SEC_ALLOC) != 0 && (sec_flags & SEC_LOAD) == 0)
520 styp_flags |= IMAGE_SCN_CNT_UNINITIALIZED_DATA; /* ==STYP_BSS */
522 /* skip constRUCTOR */
525 if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
526 styp_flags |= STYP_NOLOAD;
528 if ((sec_flags & SEC_IS_COMMON) != 0)
529 styp_flags |= IMAGE_SCN_LNK_COMDAT;
530 if ((sec_flags & SEC_DEBUGGING) != 0)
531 styp_flags |= IMAGE_SCN_MEM_DISCARDABLE;
532 if ((sec_flags & SEC_EXCLUDE) != 0)
533 styp_flags |= IMAGE_SCN_LNK_REMOVE;
534 if ((sec_flags & SEC_NEVER_LOAD) != 0)
535 styp_flags |= IMAGE_SCN_LNK_REMOVE;
538 if (sec_flags & SEC_LINK_ONCE)
539 styp_flags |= IMAGE_SCN_LNK_COMDAT;
540 /* skip LINK_DUPLICATES */
541 /* skip LINKER_CREATED */
543 /* For now, the read/write bits are mapped onto SEC_READONLY, even
544 though the semantics don't quite match. The bits from the input
545 are retained in pei_section_data(abfd, section)->pe_flags */
547 styp_flags |= IMAGE_SCN_MEM_READ; /* always readable. */
548 if ((sec_flags & SEC_READONLY) == 0)
549 styp_flags |= IMAGE_SCN_MEM_WRITE; /* Invert READONLY for write */
550 if (sec_flags & SEC_CODE)
551 styp_flags |= IMAGE_SCN_MEM_EXECUTE; /* CODE->EXECUTE */
552 if (sec_flags & SEC_SHARED)
553 styp_flags |= IMAGE_SCN_MEM_SHARED; /* Shared remains meaningful */
558 #endif /* COFF_WITH_PE */
560 /* Return a word with SEC_* flags set to represent the incoming STYP_*
561 flags (from scnhdr.s_flags). The inverse of this function is
562 sec_to_styp_flags(). NOTE: If you add to/change this routine, you
563 should probably mirror the changes in sec_to_styp_flags(). */
568 styp_to_sec_flags (abfd, hdr, name, section, flags_ptr)
569 bfd *abfd ATTRIBUTE_UNUSED;
572 asection *section ATTRIBUTE_UNUSED;
575 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
576 long styp_flags = internal_s->s_flags;
577 flagword sec_flags = 0;
580 if (styp_flags & STYP_BLOCK)
581 sec_flags |= SEC_BLOCK;
585 if (styp_flags & STYP_CLINK)
586 sec_flags |= SEC_CLINK;
590 if (styp_flags & STYP_NOLOAD)
591 sec_flags |= SEC_NEVER_LOAD;
592 #endif /* STYP_NOLOAD */
594 /* For 386 COFF, at least, an unloadable text or data section is
595 actually a shared library section. */
596 if (styp_flags & STYP_TEXT)
598 if (sec_flags & SEC_NEVER_LOAD)
599 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
601 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
603 else if (styp_flags & STYP_DATA)
605 if (sec_flags & SEC_NEVER_LOAD)
606 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
608 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
610 else if (styp_flags & STYP_BSS)
612 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
613 if (sec_flags & SEC_NEVER_LOAD)
614 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
617 sec_flags |= SEC_ALLOC;
619 else if (styp_flags & STYP_INFO)
621 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
622 defined. coff_compute_section_file_positions uses
623 COFF_PAGE_SIZE to ensure that the low order bits of the
624 section VMA and the file offset match. If we don't know
625 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
626 and demand page loading of the file will fail. */
627 #if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS)
628 sec_flags |= SEC_DEBUGGING;
631 else if (styp_flags & STYP_PAD)
633 else if (strcmp (name, _TEXT) == 0)
635 if (sec_flags & SEC_NEVER_LOAD)
636 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
638 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
640 else if (strcmp (name, _DATA) == 0)
642 if (sec_flags & SEC_NEVER_LOAD)
643 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
645 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
647 else if (strcmp (name, _BSS) == 0)
649 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
650 if (sec_flags & SEC_NEVER_LOAD)
651 sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
654 sec_flags |= SEC_ALLOC;
656 else if (strncmp (name, ".debug", 6) == 0
658 || strcmp (name, _COMMENT) == 0
660 #ifdef COFF_LONG_SECTION_NAMES
661 || strncmp (name, ".gnu.linkonce.wi.", 17) == 0
663 || strncmp (name, ".stab", 5) == 0)
665 #ifdef COFF_PAGE_SIZE
666 sec_flags |= SEC_DEBUGGING;
670 else if (strcmp (name, _LIB) == 0)
674 else if (strcmp (name, _LIT) == 0)
675 sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY;
678 sec_flags |= SEC_ALLOC | SEC_LOAD;
680 #ifdef STYP_LIT /* A29k readonly text/data section type */
681 if ((styp_flags & STYP_LIT) == STYP_LIT)
682 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
683 #endif /* STYP_LIT */
685 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
686 if (styp_flags & STYP_OTHER_LOAD)
687 sec_flags = (SEC_LOAD | SEC_ALLOC);
688 #endif /* STYP_SDATA */
690 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
691 /* As a GNU extension, if the name begins with .gnu.linkonce, we
692 only link a single copy of the section. This is used to support
693 g++. g++ will emit each template expansion in its own section.
694 The symbols will be defined as weak, so that multiple definitions
695 are permitted. The GNU linker extension is to actually discard
696 all but one of the sections. */
697 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
698 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
701 if (flags_ptr == NULL)
704 * flags_ptr = sec_flags;
708 #else /* COFF_WITH_PE */
711 handle_COMDAT (abfd, sec_flags, hdr, name, section)
718 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
719 bfd_byte *esymstart, *esym, *esymend;
721 char *target_name = NULL;
723 sec_flags |= SEC_LINK_ONCE;
725 /* Unfortunately, the PE format stores essential information in
726 the symbol table, of all places. We need to extract that
727 information now, so that objdump and the linker will know how
728 to handle the section without worrying about the symbols. We
729 can't call slurp_symtab, because the linker doesn't want the
732 /* COMDAT sections are special. The first symbol is the section
733 symbol, which tells what kind of COMDAT section it is. The
734 second symbol is the "comdat symbol" - the one with the
735 unique name. GNU uses the section symbol for the unique
736 name; MS uses ".text" for every comdat section. Sigh. - DJ */
738 /* This is not mirrored in sec_to_styp_flags(), but there
739 doesn't seem to be a need to, either, and it would at best be
742 if (! _bfd_coff_get_external_symbols (abfd))
745 esymstart = esym = (bfd_byte *) obj_coff_external_syms (abfd);
746 esymend = esym + obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd);
748 while (esym < esymend)
750 struct internal_syment isym;
751 char buf[SYMNMLEN + 1];
754 bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &isym);
756 if (sizeof (internal_s->s_name) > SYMNMLEN)
758 /* This case implies that the matching
759 symbol name will be in the string table. */
763 if (isym.n_scnum == section->target_index)
765 /* According to the MSVC documentation, the first
766 TWO entries with the section # are both of
767 interest to us. The first one is the "section
768 symbol" (section name). The second is the comdat
769 symbol name. Here, we've found the first
770 qualifying entry; we distinguish it from the
771 second with a state flag.
773 In the case of gas-generated (at least until that
774 is fixed) .o files, it isn't necessarily the
775 second one. It may be some other later symbol.
777 Since gas also doesn't follow MS conventions and
778 emits the section similar to .text$<name>, where
779 <something> is the name we're looking for, we
780 distinguish the two as follows:
782 If the section name is simply a section name (no
783 $) we presume it's MS-generated, and look at
784 precisely the second symbol for the comdat name.
785 If the section name has a $, we assume it's
786 gas-generated, and look for <something> (whatever
787 follows the $) as the comdat symbol. */
789 /* All 3 branches use this */
790 symname = _bfd_coff_internal_syment_name (abfd, &isym, buf);
799 /* The first time we've seen the symbol. */
800 union internal_auxent aux;
804 /* If it isn't the stuff we're expecting, die;
805 The MS documentation is vague, but it
806 appears that the second entry serves BOTH
807 as the comdat symbol and the defining
808 symbol record (either C_STAT or C_EXT,
809 possibly with an aux entry with debug
810 information if it's a function.) It
811 appears the only way to find the second one
812 is to count. (On Intel, they appear to be
813 adjacent, but on Alpha, they have been
816 Here, we think we've found the first one,
817 but there's some checking we can do to be
820 if (! (isym.n_sclass == C_STAT
821 && isym.n_type == T_NULL
822 && isym.n_value == 0))
825 /* FIXME LATER: MSVC generates section names
826 like .text for comdats. Gas generates
827 names like .text$foo__Fv (in the case of a
828 function). See comment above for more. */
830 if (strcmp (name, symname) != 0)
833 /* This is the section symbol. */
834 bfd_coff_swap_aux_in (abfd, (PTR) (esym + bfd_coff_symesz (abfd)),
835 isym.n_type, isym.n_sclass,
836 0, isym.n_numaux, (PTR) &aux);
838 target_name = strchr (name, '$');
839 if (target_name != NULL)
847 /* FIXME: Microsoft uses NODUPLICATES and
848 ASSOCIATIVE, but gnu uses ANY and
849 SAME_SIZE. Unfortunately, gnu doesn't do
850 the comdat symbols right. So, until we can
851 fix it to do the right thing, we are
852 temporarily disabling comdats for the MS
853 types (they're used in DLLs and C++, but we
854 don't support *their* C++ libraries anyway
857 /* Cygwin does not follow the MS style, and
858 uses ANY and SAME_SIZE where NODUPLICATES
859 and ASSOCIATIVE should be used. For
860 Interix, we just do the right thing up
863 switch (aux.x_scn.x_comdat)
865 case IMAGE_COMDAT_SELECT_NODUPLICATES:
866 #ifdef STRICT_PE_FORMAT
867 sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
869 sec_flags &= ~SEC_LINK_ONCE;
873 case IMAGE_COMDAT_SELECT_ANY:
874 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
877 case IMAGE_COMDAT_SELECT_SAME_SIZE:
878 sec_flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
881 case IMAGE_COMDAT_SELECT_EXACT_MATCH:
882 /* Not yet fully implemented ??? */
883 sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
886 /* debug$S gets this case; other
889 /* There may be no symbol... we'll search
890 the whole table... Is this the right
891 place to play this game? Or should we do
892 it when reading it in. */
893 case IMAGE_COMDAT_SELECT_ASSOCIATIVE:
894 #ifdef STRICT_PE_FORMAT
895 /* FIXME: This is not currently implemented. */
896 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
898 sec_flags &= ~SEC_LINK_ONCE;
902 default: /* 0 means "no symbol" */
903 /* debug$F gets this case; other
905 sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
912 /* Gas mode: the first matching on partial name. */
914 #ifndef TARGET_UNDERSCORE
915 #define TARGET_UNDERSCORE 0
917 /* Is this the name we're looking for? */
918 if (strcmp (target_name,
919 symname + (TARGET_UNDERSCORE ? 1 : 0)) != 0)
921 /* Not the name we're looking for */
922 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
927 /* MSVC mode: the lexically second symbol (or
928 drop through from the above). */
933 /* This must the second symbol with the
934 section #. It is the actual symbol name.
935 Intel puts the two adjacent, but Alpha (at
936 least) spreads them out. */
938 amt = sizeof (struct bfd_comdat_info);
939 section->comdat = bfd_alloc (abfd, amt);
940 if (section->comdat == NULL)
943 section->comdat->symbol =
944 (esym - esymstart) / bfd_coff_symesz (abfd);
946 amt = strlen (symname) + 1;
947 newname = bfd_alloc (abfd, amt);
951 strcpy (newname, symname);
952 section->comdat->name = newname;
959 esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
967 /* The PE version; see above for the general comments.
969 Since to set the SEC_LINK_ONCE and associated flags, we have to
970 look at the symbol table anyway, we return the symbol table index
971 of the symbol being used as the COMDAT symbol. This is admittedly
972 ugly, but there's really nowhere else that we have access to the
973 required information. FIXME: Is the COMDAT symbol index used for
974 any purpose other than objdump? */
977 styp_to_sec_flags (abfd, hdr, name, section, flags_ptr)
984 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
985 long styp_flags = internal_s->s_flags;
987 boolean result = true;
989 /* Assume read only unless IMAGE_SCN_MEM_WRITE is specified. */
990 sec_flags = SEC_READONLY;
992 /* Process each flag bit in styp_flags in turn. */
995 long flag = styp_flags & - styp_flags;
996 char * unhandled = NULL;
998 styp_flags &= ~ flag;
1000 /* We infer from the distinct read/write/execute bits the settings
1001 of some of the bfd flags; the actual values, should we need them,
1002 are also in pei_section_data (abfd, section)->pe_flags. */
1007 unhandled = "STYP_DSECT";
1010 unhandled = "STYP_GROUP";
1013 unhandled = "STYP_COPY";
1016 unhandled = "STYP_OVER";
1018 #ifdef SEC_NEVER_LOAD
1020 sec_flags |= SEC_NEVER_LOAD;
1023 case IMAGE_SCN_MEM_READ:
1024 /* Ignored, assume it always to be true. */
1026 case IMAGE_SCN_TYPE_NO_PAD:
1029 case IMAGE_SCN_LNK_OTHER:
1030 unhandled = "IMAGE_SCN_LNK_OTHER";
1032 case IMAGE_SCN_MEM_NOT_CACHED:
1033 unhandled = "IMAGE_SCN_MEM_NOT_CACHED";
1035 case IMAGE_SCN_MEM_NOT_PAGED:
1036 unhandled = "IMAGE_SCN_MEM_NOT_PAGED";
1038 case IMAGE_SCN_MEM_EXECUTE:
1039 sec_flags |= SEC_CODE;
1041 case IMAGE_SCN_MEM_WRITE:
1042 sec_flags &= ~ SEC_READONLY;
1044 case IMAGE_SCN_MEM_DISCARDABLE:
1045 sec_flags |= SEC_DEBUGGING;
1047 case IMAGE_SCN_MEM_SHARED:
1048 sec_flags |= SEC_SHARED;
1050 case IMAGE_SCN_LNK_REMOVE:
1051 sec_flags |= SEC_EXCLUDE;
1053 case IMAGE_SCN_CNT_CODE:
1054 sec_flags |= SEC_CODE | SEC_ALLOC | SEC_LOAD;
1056 case IMAGE_SCN_CNT_INITIALIZED_DATA:
1057 sec_flags |= SEC_DATA | SEC_ALLOC | SEC_LOAD;
1059 case IMAGE_SCN_CNT_UNINITIALIZED_DATA:
1060 sec_flags |= SEC_ALLOC;
1062 case IMAGE_SCN_LNK_INFO:
1063 /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
1064 defined. coff_compute_section_file_positions uses
1065 COFF_PAGE_SIZE to ensure that the low order bits of the
1066 section VMA and the file offset match. If we don't know
1067 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
1068 and demand page loading of the file will fail. */
1069 #ifdef COFF_PAGE_SIZE
1070 sec_flags |= SEC_DEBUGGING;
1073 case IMAGE_SCN_LNK_COMDAT:
1074 /* COMDAT gets very special treatment. */
1075 sec_flags = handle_COMDAT (abfd, sec_flags, hdr, name, section);
1078 /* Silently ignore for now. */
1082 /* If the section flag was not handled, report it here. */
1083 if (unhandled != NULL)
1085 (*_bfd_error_handler)
1086 (_("%s (%s): Section flag %s (0x%x) ignored"),
1087 bfd_archive_filename (abfd), name, unhandled, flag);
1092 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
1093 /* As a GNU extension, if the name begins with .gnu.linkonce, we
1094 only link a single copy of the section. This is used to support
1095 g++. g++ will emit each template expansion in its own section.
1096 The symbols will be defined as weak, so that multiple definitions
1097 are permitted. The GNU linker extension is to actually discard
1098 all but one of the sections. */
1099 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
1100 sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1104 * flags_ptr = sec_flags;
1109 #endif /* COFF_WITH_PE */
1111 #define get_index(symbol) ((symbol)->udata.i)
1115 bfd_coff_backend_data
1119 .{* COFF symbol classifications. *}
1121 .enum coff_symbol_classification
1123 . {* Global symbol. *}
1124 . COFF_SYMBOL_GLOBAL,
1125 . {* Common symbol. *}
1126 . COFF_SYMBOL_COMMON,
1127 . {* Undefined symbol. *}
1128 . COFF_SYMBOL_UNDEFINED,
1129 . {* Local symbol. *}
1130 . COFF_SYMBOL_LOCAL,
1131 . {* PE section symbol. *}
1132 . COFF_SYMBOL_PE_SECTION
1135 Special entry points for gdb to swap in coff symbol table parts:
1138 . void (*_bfd_coff_swap_aux_in)
1139 . PARAMS ((bfd *, PTR, int, int, int, int, PTR));
1141 . void (*_bfd_coff_swap_sym_in)
1142 . PARAMS ((bfd *, PTR, PTR));
1144 . void (*_bfd_coff_swap_lineno_in)
1145 . PARAMS ((bfd *, PTR, PTR));
1147 . unsigned int (*_bfd_coff_swap_aux_out)
1148 . PARAMS ((bfd *, PTR, int, int, int, int, PTR));
1150 . unsigned int (*_bfd_coff_swap_sym_out)
1151 . PARAMS ((bfd *, PTR, PTR));
1153 . unsigned int (*_bfd_coff_swap_lineno_out)
1154 . PARAMS ((bfd *, PTR, PTR));
1156 . unsigned int (*_bfd_coff_swap_reloc_out)
1157 . PARAMS ((bfd *, PTR, PTR));
1159 . unsigned int (*_bfd_coff_swap_filehdr_out)
1160 . PARAMS ((bfd *, PTR, PTR));
1162 . unsigned int (*_bfd_coff_swap_aouthdr_out)
1163 . PARAMS ((bfd *, PTR, PTR));
1165 . unsigned int (*_bfd_coff_swap_scnhdr_out)
1166 . PARAMS ((bfd *, PTR, PTR));
1168 . unsigned int _bfd_filhsz;
1169 . unsigned int _bfd_aoutsz;
1170 . unsigned int _bfd_scnhsz;
1171 . unsigned int _bfd_symesz;
1172 . unsigned int _bfd_auxesz;
1173 . unsigned int _bfd_relsz;
1174 . unsigned int _bfd_linesz;
1175 . unsigned int _bfd_filnmlen;
1176 . boolean _bfd_coff_long_filenames;
1177 . boolean _bfd_coff_long_section_names;
1178 . unsigned int _bfd_coff_default_section_alignment_power;
1179 . boolean _bfd_coff_force_symnames_in_strings;
1180 . unsigned int _bfd_coff_debug_string_prefix_length;
1182 . void (*_bfd_coff_swap_filehdr_in)
1183 . PARAMS ((bfd *, PTR, PTR));
1185 . void (*_bfd_coff_swap_aouthdr_in)
1186 . PARAMS ((bfd *, PTR, PTR));
1188 . void (*_bfd_coff_swap_scnhdr_in)
1189 . PARAMS ((bfd *, PTR, PTR));
1191 . void (*_bfd_coff_swap_reloc_in)
1192 . PARAMS ((bfd *abfd, PTR, PTR));
1194 . boolean (*_bfd_coff_bad_format_hook)
1195 . PARAMS ((bfd *, PTR));
1197 . boolean (*_bfd_coff_set_arch_mach_hook)
1198 . PARAMS ((bfd *, PTR));
1200 . PTR (*_bfd_coff_mkobject_hook)
1201 . PARAMS ((bfd *, PTR, PTR));
1203 . boolean (*_bfd_styp_to_sec_flags_hook)
1204 . PARAMS ((bfd *, PTR, const char *, asection *, flagword *));
1206 . void (*_bfd_set_alignment_hook)
1207 . PARAMS ((bfd *, asection *, PTR));
1209 . boolean (*_bfd_coff_slurp_symbol_table)
1212 . boolean (*_bfd_coff_symname_in_debug)
1213 . PARAMS ((bfd *, struct internal_syment *));
1215 . boolean (*_bfd_coff_pointerize_aux_hook)
1216 . PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
1217 . unsigned int, combined_entry_type *));
1219 . boolean (*_bfd_coff_print_aux)
1220 . PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1221 . combined_entry_type *, unsigned int));
1223 . void (*_bfd_coff_reloc16_extra_cases)
1224 . PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
1225 . bfd_byte *, unsigned int *, unsigned int *));
1227 . int (*_bfd_coff_reloc16_estimate)
1228 . PARAMS ((bfd *, asection *, arelent *, unsigned int,
1229 . struct bfd_link_info *));
1231 . enum coff_symbol_classification (*_bfd_coff_classify_symbol)
1232 . PARAMS ((bfd *, struct internal_syment *));
1234 . boolean (*_bfd_coff_compute_section_file_positions)
1237 . boolean (*_bfd_coff_start_final_link)
1238 . PARAMS ((bfd *, struct bfd_link_info *));
1240 . boolean (*_bfd_coff_relocate_section)
1241 . PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
1242 . struct internal_reloc *, struct internal_syment *, asection **));
1244 . reloc_howto_type *(*_bfd_coff_rtype_to_howto)
1245 . PARAMS ((bfd *, asection *, struct internal_reloc *,
1246 . struct coff_link_hash_entry *, struct internal_syment *,
1249 . boolean (*_bfd_coff_adjust_symndx)\
1250 . PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
1251 . struct internal_reloc *, boolean *));
1253 . boolean (*_bfd_coff_link_add_one_symbol)
1254 . PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword,
1255 . asection *, bfd_vma, const char *, boolean, boolean,
1256 . struct bfd_link_hash_entry **));
1258 . boolean (*_bfd_coff_link_output_has_begun)
1259 . PARAMS ((bfd *, struct coff_final_link_info *));
1261 . boolean (*_bfd_coff_final_link_postscript)
1262 . PARAMS ((bfd *, struct coff_final_link_info *));
1264 .} bfd_coff_backend_data;
1266 .#define coff_backend_info(abfd) \
1267 . ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1269 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1270 . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1272 .#define bfd_coff_swap_sym_in(a,e,i) \
1273 . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1275 .#define bfd_coff_swap_lineno_in(a,e,i) \
1276 . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1278 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1279 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1281 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1282 . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1284 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1285 . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1287 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1288 . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1290 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1291 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1293 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1294 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1296 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1297 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1299 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1300 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1301 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1302 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1303 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1304 .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
1305 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1306 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1307 .#define bfd_coff_long_filenames(abfd) \
1308 . (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1309 .#define bfd_coff_long_section_names(abfd) \
1310 . (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1311 .#define bfd_coff_default_section_alignment_power(abfd) \
1312 . (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1313 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1314 . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1316 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1317 . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1319 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1320 . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1322 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1323 . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1325 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1326 . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1328 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1329 . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1330 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1331 . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
1333 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
1334 . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1335 . (abfd, scnhdr, name, section, flags_ptr))
1337 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1338 . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1340 .#define bfd_coff_slurp_symbol_table(abfd)\
1341 . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1343 .#define bfd_coff_symname_in_debug(abfd, sym)\
1344 . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1346 .#define bfd_coff_force_symnames_in_strings(abfd)\
1347 . (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
1349 .#define bfd_coff_debug_string_prefix_length(abfd)\
1350 . (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
1352 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1353 . ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1354 . (abfd, file, base, symbol, aux, indaux))
1356 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
1357 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1358 . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1360 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1361 . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1362 . (abfd, section, reloc, shrink, link_info))
1364 .#define bfd_coff_classify_symbol(abfd, sym)\
1365 . ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1368 .#define bfd_coff_compute_section_file_positions(abfd)\
1369 . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1372 .#define bfd_coff_start_final_link(obfd, info)\
1373 . ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1375 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1376 . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1377 . (obfd, info, ibfd, o, con, rel, isyms, secs))
1378 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1379 . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1380 . (abfd, sec, rel, h, sym, addendp))
1381 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1382 . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1383 . (obfd, info, ibfd, sec, rel, adjustedp))
1384 .#define bfd_coff_link_add_one_symbol(info,abfd,name,flags,section,value,string,cp,coll,hashp)\
1385 . ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1386 . (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1388 .#define bfd_coff_link_output_has_begun(a,p) \
1389 . ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a,p))
1390 .#define bfd_coff_final_link_postscript(a,p) \
1391 . ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a,p))
1395 /* See whether the magic number matches. */
1398 coff_bad_format_hook (abfd, filehdr)
1399 bfd * abfd ATTRIBUTE_UNUSED;
1402 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1404 if (BADMAG (*internal_f))
1407 /* if the optional header is NULL or not the correct size then
1408 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1409 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1410 optional header is of a different size.
1412 But the mips keeps extra stuff in it's opthdr, so dont check
1416 #if defined(M88) || defined(I960)
1417 if (internal_f->f_opthdr != 0 && bfd_coff_aoutsz (abfd) != internal_f->f_opthdr)
1424 /* Check whether this section uses an alignment other than the
1428 coff_set_custom_section_alignment (abfd, section, alignment_table, table_size)
1429 bfd *abfd ATTRIBUTE_UNUSED;
1431 const struct coff_section_alignment_entry *alignment_table;
1432 const unsigned int table_size;
1434 const unsigned int default_alignment = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1437 for (i = 0; i < table_size; ++i)
1439 const char *secname = bfd_get_section_name (abfd, section);
1440 if (alignment_table[i].comparison_length == (unsigned int) -1
1441 ? strcmp (alignment_table[i].name, secname) == 0
1442 : strncmp (alignment_table[i].name, secname,
1443 alignment_table[i].comparison_length) == 0)
1446 if (i >= table_size)
1449 if (alignment_table[i].default_alignment_min != COFF_ALIGNMENT_FIELD_EMPTY
1450 && default_alignment < alignment_table[i].default_alignment_min)
1453 if (alignment_table[i].default_alignment_max != COFF_ALIGNMENT_FIELD_EMPTY
1454 #if COFF_DEFAULT_SECTION_ALIGNMENT_POWER != 0
1455 && default_alignment > alignment_table[i].default_alignment_max
1460 section->alignment_power = alignment_table[i].alignment_power;
1463 /* Custom section alignment records. */
1465 static const struct coff_section_alignment_entry
1466 coff_section_alignment_table[] =
1468 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1469 COFF_SECTION_ALIGNMENT_ENTRIES,
1471 /* There must not be any gaps between .stabstr sections. */
1472 { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1473 1, COFF_ALIGNMENT_FIELD_EMPTY, 0 },
1474 /* The .stab section must be aligned to 2**2 at most, to avoid gaps. */
1475 { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1476 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1477 /* Similarly for the .ctors and .dtors sections. */
1478 { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1479 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1480 { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1481 3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }
1484 static const unsigned int coff_section_alignment_table_size =
1485 sizeof coff_section_alignment_table / sizeof coff_section_alignment_table[0];
1487 /* Initialize a section structure with information peculiar to this
1488 particular implementation of COFF. */
1491 coff_new_section_hook (abfd, section)
1495 combined_entry_type *native;
1498 section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1501 if (bfd_xcoff_text_align_power (abfd) != 0
1502 && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
1503 section->alignment_power = bfd_xcoff_text_align_power (abfd);
1504 if (bfd_xcoff_data_align_power (abfd) != 0
1505 && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
1506 section->alignment_power = bfd_xcoff_data_align_power (abfd);
1509 /* Allocate aux records for section symbols, to store size and
1512 @@ The 10 is a guess at a plausible maximum number of aux entries
1513 (but shouldn't be a constant). */
1514 amt = sizeof (combined_entry_type) * 10;
1515 native = (combined_entry_type *) bfd_zalloc (abfd, amt);
1519 /* We don't need to set up n_name, n_value, or n_scnum in the native
1520 symbol information, since they'll be overriden by the BFD symbol
1521 anyhow. However, we do need to set the type and storage class,
1522 in case this symbol winds up getting written out. The value 0
1523 for n_numaux is already correct. */
1525 native->u.syment.n_type = T_NULL;
1526 native->u.syment.n_sclass = C_STAT;
1528 coffsymbol (section->symbol)->native = native;
1530 coff_set_custom_section_alignment (abfd, section,
1531 coff_section_alignment_table,
1532 coff_section_alignment_table_size);
1537 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1539 /* Set the alignment of a BFD section. */
1541 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1544 coff_set_alignment_hook (abfd, section, scnhdr)
1545 bfd * abfd ATTRIBUTE_UNUSED;
1549 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1553 /* Extract ALIGN from 2**ALIGN stored in section header */
1554 for (i = 0; i < 32; i++)
1555 if ((1 << i) >= hdr->s_align)
1559 /* TI tools puts the alignment power in bits 8-11 */
1560 i = (hdr->s_flags >> 8) & 0xF ;
1562 #ifdef COFF_DECODE_ALIGNMENT
1563 i = COFF_DECODE_ALIGNMENT(hdr->s_flags);
1565 section->alignment_power = i;
1567 #ifdef coff_set_section_load_page
1568 coff_set_section_load_page (section, hdr->s_page);
1572 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1575 /* a couple of macros to help setting the alignment power field */
1576 #define ALIGN_SET(field,x,y) \
1577 if (((field) & IMAGE_SCN_ALIGN_64BYTES) == x )\
1579 section->alignment_power = y;\
1582 #define ELIFALIGN_SET(field,x,y) \
1583 else if (( (field) & IMAGE_SCN_ALIGN_64BYTES) == x ) \
1585 section->alignment_power = y;\
1588 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1591 coff_set_alignment_hook (abfd, section, scnhdr)
1592 bfd * abfd ATTRIBUTE_UNUSED;
1596 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1599 ALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_64BYTES, 6)
1600 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_32BYTES, 5)
1601 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_16BYTES, 4)
1602 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_8BYTES, 3)
1603 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_4BYTES, 2)
1604 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_2BYTES, 1)
1605 ELIFALIGN_SET (hdr->s_flags, IMAGE_SCN_ALIGN_1BYTES, 0)
1607 /* In a PE image file, the s_paddr field holds the virtual size of a
1608 section, while the s_size field holds the raw size. We also keep
1609 the original section flag value, since not every bit can be
1610 mapped onto a generic BFD section bit. */
1611 if (coff_section_data (abfd, section) == NULL)
1613 amt = sizeof (struct coff_section_tdata);
1614 section->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
1615 if (section->used_by_bfd == NULL)
1617 /* FIXME: Return error. */
1621 if (pei_section_data (abfd, section) == NULL)
1623 amt = sizeof (struct pei_section_tdata);
1624 coff_section_data (abfd, section)->tdata = (PTR) bfd_zalloc (abfd, amt);
1625 if (coff_section_data (abfd, section)->tdata == NULL)
1627 /* FIXME: Return error. */
1631 pei_section_data (abfd, section)->virt_size = hdr->s_paddr;
1632 pei_section_data (abfd, section)->pe_flags = hdr->s_flags;
1634 section->lma = hdr->s_vaddr;
1636 /* check for extended relocs */
1637 if (hdr->s_flags & IMAGE_SCN_LNK_NRELOC_OVFL)
1639 struct external_reloc dst;
1640 struct internal_reloc n;
1641 file_ptr oldpos = bfd_tell (abfd);
1642 bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0);
1643 if (bfd_bread ((PTR) &dst, (bfd_size_type) bfd_coff_relsz (abfd), abfd)
1644 != bfd_coff_relsz (abfd))
1647 coff_swap_reloc_in (abfd, &dst, &n);
1648 bfd_seek (abfd, oldpos, 0);
1649 section->reloc_count = hdr->s_nreloc = n.r_vaddr;
1653 #undef ELIFALIGN_SET
1655 #else /* ! COFF_WITH_PE */
1658 /* We grossly abuse this function to handle XCOFF overflow headers.
1659 When we see one, we correct the reloc and line number counts in the
1660 real header, and remove the section we just created. */
1662 static void coff_set_alignment_hook PARAMS ((bfd *, asection *, PTR));
1665 coff_set_alignment_hook (abfd, section, scnhdr)
1670 struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1674 if ((hdr->s_flags & STYP_OVRFLO) == 0)
1677 real_sec = coff_section_from_bfd_index (abfd, (int) hdr->s_nreloc);
1678 if (real_sec == NULL)
1681 real_sec->reloc_count = hdr->s_paddr;
1682 real_sec->lineno_count = hdr->s_vaddr;
1684 for (ps = &abfd->sections; *ps != NULL; ps = &(*ps)->next)
1688 bfd_section_list_remove (abfd, ps);
1689 --abfd->section_count;
1695 #else /* ! RS6000COFF_C */
1697 #define coff_set_alignment_hook \
1698 ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
1700 #endif /* ! RS6000COFF_C */
1701 #endif /* ! COFF_WITH_PE */
1702 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1704 #ifndef coff_mkobject
1706 static boolean coff_mkobject PARAMS ((bfd *));
1709 coff_mkobject (abfd)
1712 coff_data_type *coff;
1713 bfd_size_type amt = sizeof (coff_data_type);
1715 abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, amt);
1716 if (abfd->tdata.coff_obj_data == 0)
1718 coff = coff_data (abfd);
1719 coff->symbols = (coff_symbol_type *) NULL;
1720 coff->conversion_table = (unsigned int *) NULL;
1721 coff->raw_syments = (struct coff_ptr_struct *) NULL;
1722 coff->relocbase = 0;
1723 coff->local_toc_sym_map = 0;
1725 /* make_abs_section(abfd);*/
1731 /* Create the COFF backend specific information. */
1732 #ifndef coff_mkobject_hook
1734 coff_mkobject_hook (abfd, filehdr, aouthdr)
1737 PTR aouthdr ATTRIBUTE_UNUSED;
1739 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1740 coff_data_type *coff;
1742 if (! coff_mkobject (abfd))
1745 coff = coff_data (abfd);
1747 coff->sym_filepos = internal_f->f_symptr;
1749 /* These members communicate important constants about the symbol
1750 table to GDB's symbol-reading code. These `constants'
1751 unfortunately vary among coff implementations... */
1752 coff->local_n_btmask = N_BTMASK;
1753 coff->local_n_btshft = N_BTSHFT;
1754 coff->local_n_tmask = N_TMASK;
1755 coff->local_n_tshift = N_TSHIFT;
1756 coff->local_symesz = bfd_coff_symesz (abfd);
1757 coff->local_auxesz = bfd_coff_auxesz (abfd);
1758 coff->local_linesz = bfd_coff_linesz (abfd);
1760 coff->timestamp = internal_f->f_timdat;
1762 obj_raw_syment_count (abfd) =
1763 obj_conv_table_size (abfd) =
1764 internal_f->f_nsyms;
1767 if ((internal_f->f_flags & F_SHROBJ) != 0)
1768 abfd->flags |= DYNAMIC;
1769 if (aouthdr != NULL && internal_f->f_opthdr >= bfd_coff_aoutsz (abfd))
1771 struct internal_aouthdr *internal_a =
1772 (struct internal_aouthdr *) aouthdr;
1773 struct xcoff_tdata *xcoff;
1775 xcoff = xcoff_data (abfd);
1776 # ifdef U803XTOCMAGIC
1777 xcoff->xcoff64 = internal_f->f_magic == U803XTOCMAGIC;
1781 xcoff->full_aouthdr = true;
1782 xcoff->toc = internal_a->o_toc;
1783 xcoff->sntoc = internal_a->o_sntoc;
1784 xcoff->snentry = internal_a->o_snentry;
1785 bfd_xcoff_text_align_power (abfd) = internal_a->o_algntext;
1786 bfd_xcoff_data_align_power (abfd) = internal_a->o_algndata;
1787 xcoff->modtype = internal_a->o_modtype;
1788 xcoff->cputype = internal_a->o_cputype;
1789 xcoff->maxdata = internal_a->o_maxdata;
1790 xcoff->maxstack = internal_a->o_maxstack;
1795 /* Set the flags field from the COFF header read in. */
1796 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
1801 /* FIXME: I'm not sure this is ever executed, since peicode.h
1802 defines coff_mkobject_hook. */
1803 if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
1804 abfd->flags |= HAS_DEBUG;
1811 /* Determine the machine architecture and type. FIXME: This is target
1812 dependent because the magic numbers are defined in the target
1813 dependent header files. But there is no particular need for this.
1814 If the magic numbers were moved to a separate file, this function
1815 would be target independent and would also be much more successful
1816 at linking together COFF files for different architectures. */
1819 coff_set_arch_mach_hook (abfd, filehdr)
1823 unsigned long machine;
1824 enum bfd_architecture arch;
1825 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1827 /* Zero selects the default machine for an arch. */
1829 switch (internal_f->f_magic)
1831 #ifdef OR32_MAGIC_BIG
1832 case OR32_MAGIC_BIG:
1833 case OR32_MAGIC_LITTLE:
1834 arch = bfd_arch_or32;
1839 arch = bfd_arch_powerpc;
1845 case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */
1846 case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */
1847 arch = bfd_arch_i386;
1852 arch = bfd_arch_ia64;
1855 #ifdef A29K_MAGIC_BIG
1856 case A29K_MAGIC_BIG:
1857 case A29K_MAGIC_LITTLE:
1858 arch = bfd_arch_a29k;
1865 arch = bfd_arch_arm;
1866 switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK)
1868 case F_ARM_2: machine = bfd_mach_arm_2; break;
1869 case F_ARM_2a: machine = bfd_mach_arm_2a; break;
1870 case F_ARM_3: machine = bfd_mach_arm_3; break;
1872 case F_ARM_3M: machine = bfd_mach_arm_3M; break;
1873 case F_ARM_4: machine = bfd_mach_arm_4; break;
1874 case F_ARM_4T: machine = bfd_mach_arm_4T; break;
1875 /* The COFF header does not have enough bits available
1876 to cover all the different ARM architectures. So
1877 we interpret F_ARM_5, the highest flag value to mean
1878 "the highest ARM architecture known to BFD" which is
1879 currently the XScale. */
1880 case F_ARM_5: machine = bfd_mach_arm_XScale; break;
1887 #ifdef MC68KBCSMAGIC
1890 #ifdef APOLLOM68KMAGIC
1891 case APOLLOM68KMAGIC:
1893 #ifdef LYNXCOFFMAGIC
1896 arch = bfd_arch_m68k;
1897 machine = bfd_mach_m68020;
1904 arch = bfd_arch_m88k;
1910 arch = bfd_arch_z8k;
1911 switch (internal_f->f_flags & F_MACHMASK)
1914 machine = bfd_mach_z8001;
1917 machine = bfd_mach_z8002;
1926 arch = bfd_arch_i860;
1933 arch = bfd_arch_i960;
1934 switch (F_I960TYPE & internal_f->f_flags)
1938 machine = bfd_mach_i960_core;
1941 machine = bfd_mach_i960_kb_sb;
1944 machine = bfd_mach_i960_mc;
1947 machine = bfd_mach_i960_xa;
1950 machine = bfd_mach_i960_ca;
1953 machine = bfd_mach_i960_ka_sa;
1956 machine = bfd_mach_i960_jx;
1959 machine = bfd_mach_i960_hx;
1978 if (xcoff_data (abfd)->cputype != -1)
1979 cputype = xcoff_data (abfd)->cputype & 0xff;
1982 /* We did not get a value from the a.out header. If the
1983 file has not been stripped, we may be able to get the
1984 architecture information from the first symbol, if it
1985 is a .file symbol. */
1986 if (obj_raw_syment_count (abfd) == 0)
1991 struct internal_syment sym;
1992 bfd_size_type amt = bfd_coff_symesz (abfd);
1994 buf = (bfd_byte *) bfd_malloc (amt);
1995 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1996 || bfd_bread (buf, amt, abfd) != amt)
2001 bfd_coff_swap_sym_in (abfd, (PTR) buf, (PTR) &sym);
2002 if (sym.n_sclass == C_FILE)
2003 cputype = sym.n_type & 0xff;
2010 /* FIXME: We don't handle all cases here. */
2015 arch = bfd_xcoff_architecture (abfd);
2016 machine = bfd_xcoff_machine (abfd);
2020 arch = bfd_arch_powerpc;
2021 machine = bfd_mach_ppc_601;
2023 case 2: /* 64 bit PowerPC */
2024 arch = bfd_arch_powerpc;
2025 machine = bfd_mach_ppc_620;
2028 arch = bfd_arch_powerpc;
2029 machine = bfd_mach_ppc;
2032 arch = bfd_arch_rs6000;
2033 machine = bfd_mach_rs6k;
2042 arch = bfd_arch_we32k;
2048 arch = bfd_arch_h8300;
2049 machine = bfd_mach_h8300;
2050 /* !! FIXME this probably isn't the right place for this */
2051 abfd->flags |= BFD_IS_RELAXABLE;
2057 arch = bfd_arch_h8300;
2058 machine = bfd_mach_h8300h;
2059 /* !! FIXME this probably isn't the right place for this */
2060 abfd->flags |= BFD_IS_RELAXABLE;
2066 arch = bfd_arch_h8300;
2067 machine = bfd_mach_h8300s;
2068 /* !! FIXME this probably isn't the right place for this */
2069 abfd->flags |= BFD_IS_RELAXABLE;
2073 #ifdef SH_ARCH_MAGIC_BIG
2074 case SH_ARCH_MAGIC_BIG:
2075 case SH_ARCH_MAGIC_LITTLE:
2077 case SH_ARCH_MAGIC_WINCE:
2083 #ifdef MIPS_ARCH_MAGIC_WINCE
2084 case MIPS_ARCH_MAGIC_WINCE:
2085 arch = bfd_arch_mips;
2091 arch = bfd_arch_h8500;
2097 #ifdef LYNXCOFFMAGIC
2100 arch = bfd_arch_sparc;
2106 arch = bfd_arch_tic30;
2111 #ifdef TICOFF_TARGET_ARCH
2112 /* this TI COFF section should be used by all new TI COFF v0 targets */
2114 arch = TICOFF_TARGET_ARCH;
2120 /* this TI COFF section should be used by all new TI COFF v1/2 targets */
2121 /* TI COFF1 and COFF2 use the target_id field to specify which arch */
2124 switch (internal_f->f_target_id)
2128 arch = TICOFF_TARGET_ARCH;
2132 arch = bfd_arch_obscure;
2133 (*_bfd_error_handler)
2134 (_("Unrecognized TI COFF target id '0x%x'"),
2135 internal_f->f_target_id);
2141 #ifdef TIC80_ARCH_MAGIC
2142 case TIC80_ARCH_MAGIC:
2143 arch = bfd_arch_tic80;
2149 arch = bfd_arch_mcore;
2155 arch = bfd_arch_w65;
2159 default: /* Unreadable input file type */
2160 arch = bfd_arch_obscure;
2164 bfd_default_set_arch_mach (abfd, arch, machine);
2168 #ifdef SYMNAME_IN_DEBUG
2170 static boolean symname_in_debug_hook
2171 PARAMS ((bfd *, struct internal_syment *));
2174 symname_in_debug_hook (abfd, sym)
2175 bfd * abfd ATTRIBUTE_UNUSED;
2176 struct internal_syment *sym;
2178 return SYMNAME_IN_DEBUG (sym) != 0;
2183 #define symname_in_debug_hook \
2184 (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
2191 #define FORCE_SYMNAMES_IN_STRINGS
2194 /* Handle the csect auxent of a C_EXT or C_HIDEXT symbol. */
2196 static boolean coff_pointerize_aux_hook
2197 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2198 unsigned int, combined_entry_type *));
2202 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2203 bfd *abfd ATTRIBUTE_UNUSED;
2204 combined_entry_type *table_base;
2205 combined_entry_type *symbol;
2206 unsigned int indaux;
2207 combined_entry_type *aux;
2209 int class = symbol->u.syment.n_sclass;
2211 if ((class == C_EXT || class == C_HIDEXT)
2212 && indaux + 1 == symbol->u.syment.n_numaux)
2214 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2216 aux->u.auxent.x_csect.x_scnlen.p =
2217 table_base + aux->u.auxent.x_csect.x_scnlen.l;
2218 aux->fix_scnlen = 1;
2221 /* Return true to indicate that the caller should not do any
2222 further work on this auxent. */
2226 /* Return false to indicate that this auxent should be handled by
2234 /* We don't want to pointerize bal entries. */
2236 static boolean coff_pointerize_aux_hook
2237 PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
2238 unsigned int, combined_entry_type *));
2242 coff_pointerize_aux_hook (abfd, table_base, symbol, indaux, aux)
2243 bfd *abfd ATTRIBUTE_UNUSED;
2244 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2245 combined_entry_type *symbol;
2246 unsigned int indaux;
2247 combined_entry_type *aux ATTRIBUTE_UNUSED;
2249 /* Return true if we don't want to pointerize this aux entry, which
2250 is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */
2252 && (symbol->u.syment.n_sclass == C_LEAFPROC
2253 || symbol->u.syment.n_sclass == C_LEAFSTAT
2254 || symbol->u.syment.n_sclass == C_LEAFEXT));
2259 #define coff_pointerize_aux_hook 0
2262 #endif /* ! RS6000COFF_C */
2264 /* Print an aux entry. This returns true if it has printed it. */
2266 static boolean coff_print_aux
2267 PARAMS ((bfd *, FILE *, combined_entry_type *, combined_entry_type *,
2268 combined_entry_type *, unsigned int));
2271 coff_print_aux (abfd, file, table_base, symbol, aux, indaux)
2272 bfd *abfd ATTRIBUTE_UNUSED;
2273 FILE *file ATTRIBUTE_UNUSED;
2274 combined_entry_type *table_base ATTRIBUTE_UNUSED;
2275 combined_entry_type *symbol ATTRIBUTE_UNUSED;
2276 combined_entry_type *aux ATTRIBUTE_UNUSED;
2277 unsigned int indaux ATTRIBUTE_UNUSED;
2280 if ((symbol->u.syment.n_sclass == C_EXT
2281 || symbol->u.syment.n_sclass == C_HIDEXT)
2282 && indaux + 1 == symbol->u.syment.n_numaux)
2284 /* This is a csect entry. */
2285 fprintf (file, "AUX ");
2286 if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
2288 BFD_ASSERT (! aux->fix_scnlen);
2290 fprintf (file, "val %5lld", aux->u.auxent.x_csect.x_scnlen.l);
2292 fprintf (file, "val %5ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2297 fprintf (file, "indx ");
2298 if (! aux->fix_scnlen)
2300 fprintf (file, "%4lld", aux->u.auxent.x_csect.x_scnlen.l);
2302 fprintf (file, "%4ld", (long) aux->u.auxent.x_csect.x_scnlen.l);
2305 fprintf (file, "%4ld",
2306 (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
2309 " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2310 aux->u.auxent.x_csect.x_parmhash,
2311 (unsigned int) aux->u.auxent.x_csect.x_snhash,
2312 SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
2313 SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
2314 (unsigned int) aux->u.auxent.x_csect.x_smclas,
2315 aux->u.auxent.x_csect.x_stab,
2316 (unsigned int) aux->u.auxent.x_csect.x_snstab);
2321 /* Return false to indicate that no special action was taken. */
2329 To write relocations, the back end steps though the
2330 canonical relocation table and create an
2331 @code{internal_reloc}. The symbol index to use is removed from
2332 the @code{offset} field in the symbol table supplied. The
2333 address comes directly from the sum of the section base
2334 address and the relocation offset; the type is dug directly
2335 from the howto field. Then the @code{internal_reloc} is
2336 swapped into the shape of an @code{external_reloc} and written
2343 static int compare_arelent_ptr PARAMS ((const PTR, const PTR));
2345 /* AUX's ld wants relocations to be sorted */
2347 compare_arelent_ptr (x, y)
2351 const arelent **a = (const arelent **) x;
2352 const arelent **b = (const arelent **) y;
2353 bfd_size_type aadr = (*a)->address;
2354 bfd_size_type badr = (*b)->address;
2356 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
2359 #endif /* TARG_AUX */
2362 coff_write_relocs (abfd, first_undef)
2368 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
2371 struct external_reloc dst;
2378 /* sort relocations before we write them out */
2381 amt = s->reloc_count;
2382 amt *= sizeof (arelent *);
2383 p = (arelent **) bfd_malloc (amt);
2384 if (p == NULL && s->reloc_count > 0)
2386 memcpy (p, s->orelocation, (size_t) amt);
2387 qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
2391 if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
2395 if (obj_pe (abfd) && s->reloc_count >= 0xffff)
2397 /* encode real count here as first reloc */
2398 struct internal_reloc n;
2399 memset ((PTR) & n, 0, sizeof (n));
2400 /* add one to count *this* reloc (grr) */
2401 n.r_vaddr = s->reloc_count + 1;
2402 coff_swap_reloc_out (abfd, &n, &dst);
2403 if (bfd_bwrite ((PTR) & dst, (bfd_size_type) bfd_coff_relsz (abfd),
2404 abfd) != bfd_coff_relsz (abfd))
2409 for (i = 0; i < s->reloc_count; i++)
2411 struct internal_reloc n;
2413 memset ((PTR) & n, 0, sizeof (n));
2415 /* Now we've renumbered the symbols we know where the
2416 undefined symbols live in the table. Check the reloc
2417 entries for symbols who's output bfd isn't the right one.
2418 This is because the symbol was undefined (which means
2419 that all the pointers are never made to point to the same
2420 place). This is a bad thing,'cause the symbols attached
2421 to the output bfd are indexed, so that the relocation
2422 entries know which symbol index they point to. So we
2423 have to look up the output symbol here. */
2425 if (q->sym_ptr_ptr[0]->the_bfd != abfd)
2428 const char *sname = q->sym_ptr_ptr[0]->name;
2429 asymbol **outsyms = abfd->outsymbols;
2430 for (j = first_undef; outsyms[j]; j++)
2432 const char *intable = outsyms[j]->name;
2433 if (strcmp (intable, sname) == 0) {
2434 /* got a hit, so repoint the reloc */
2435 q->sym_ptr_ptr = outsyms + j;
2441 n.r_vaddr = q->address + s->vma;
2444 /* The 29k const/consth reloc pair is a real kludge. The consth
2445 part doesn't have a symbol; it has an offset. So rebuilt
2447 if (q->howto->type == R_IHCONST)
2448 n.r_symndx = q->addend;
2453 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2454 if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q,s))
2456 if ((*q->sym_ptr_ptr)->section == bfd_abs_section_ptr
2457 && ((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0)
2459 /* This is a relocation relative to the absolute symbol. */
2463 n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
2464 /* Take notice if the symbol reloc points to a symbol
2465 we don't have in our symbol table. What should we
2467 if (n.r_symndx > obj_conv_table_size (abfd))
2472 #ifdef SWAP_OUT_RELOC_OFFSET
2473 n.r_offset = q->addend;
2477 /* Work out reloc type from what is required */
2478 SELECT_RELOC (n, q->howto);
2480 n.r_type = q->howto->type;
2482 coff_swap_reloc_out (abfd, &n, &dst);
2483 if (bfd_bwrite ((PTR) & dst, (bfd_size_type) bfd_coff_relsz (abfd),
2484 abfd) != bfd_coff_relsz (abfd))
2497 /* Set flags and magic number of a coff file from architecture and machine
2498 type. Result is true if we can represent the arch&type, false if not. */
2501 coff_set_flags (abfd, magicp, flagsp)
2503 unsigned int *magicp ATTRIBUTE_UNUSED;
2504 unsigned short *flagsp ATTRIBUTE_UNUSED;
2506 switch (bfd_get_arch (abfd))
2511 switch (bfd_get_mach (abfd))
2513 case bfd_mach_z8001:
2516 case bfd_mach_z8002:
2530 *magicp = I960ROMAGIC;
2532 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2533 I960RWMAGIC); FIXME???
2535 switch (bfd_get_mach (abfd))
2537 case bfd_mach_i960_core:
2540 case bfd_mach_i960_kb_sb:
2543 case bfd_mach_i960_mc:
2546 case bfd_mach_i960_xa:
2549 case bfd_mach_i960_ca:
2552 case bfd_mach_i960_ka_sa:
2555 case bfd_mach_i960_jx:
2558 case bfd_mach_i960_hx:
2571 case bfd_arch_tic30:
2572 *magicp = TIC30MAGIC;
2576 #ifdef TICOFF_DEFAULT_MAGIC
2577 case TICOFF_TARGET_ARCH:
2578 /* if there's no indication of which version we want, use the default */
2580 *magicp = TICOFF_DEFAULT_MAGIC;
2583 /* we may want to output in a different COFF version */
2584 switch (abfd->xvec->name[4])
2587 *magicp = TICOFF0MAGIC;
2590 *magicp = TICOFF1MAGIC;
2593 *magicp = TICOFF2MAGIC;
2602 #ifdef TIC80_ARCH_MAGIC
2603 case bfd_arch_tic80:
2604 *magicp = TIC80_ARCH_MAGIC;
2610 * magicp = ARMPEMAGIC;
2612 * magicp = ARMMAGIC;
2615 if (APCS_SET (abfd))
2617 if (APCS_26_FLAG (abfd))
2618 * flagsp |= F_APCS26;
2620 if (APCS_FLOAT_FLAG (abfd))
2621 * flagsp |= F_APCS_FLOAT;
2623 if (PIC_FLAG (abfd))
2626 if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2627 * flagsp |= F_INTERWORK;
2628 switch (bfd_get_mach (abfd))
2630 case bfd_mach_arm_2: * flagsp |= F_ARM_2; break;
2631 case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2632 case bfd_mach_arm_3: * flagsp |= F_ARM_3; break;
2633 case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2634 case bfd_mach_arm_4: * flagsp |= F_ARM_4; break;
2635 case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2636 case bfd_mach_arm_5: * flagsp |= F_ARM_5; break;
2637 /* FIXME: we do not have F_ARM vaues greater than F_ARM_5.
2638 See also the comment in coff_set_arch_mach_hook(). */
2639 case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break;
2640 case bfd_mach_arm_5TE: * flagsp |= F_ARM_5; break;
2641 case bfd_mach_arm_XScale: * flagsp |= F_ARM_5; break;
2646 case bfd_arch_powerpc:
2653 *magicp = I386MAGIC;
2655 /* Just overwrite the usual value if we're doing Lynx. */
2656 *magicp = LYNXCOFFMAGIC;
2663 *magicp = I860MAGIC;
2669 *magicp = IA64MAGIC;
2675 #ifdef APOLLOM68KMAGIC
2676 *magicp = APOLLO_COFF_VERSION_NUMBER;
2678 /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */
2679 #ifdef NAMES_HAVE_UNDERSCORE
2680 *magicp = MC68KBCSMAGIC;
2682 *magicp = MC68MAGIC;
2686 /* Just overwrite the usual value if we're doing Lynx. */
2687 *magicp = LYNXCOFFMAGIC;
2695 *magicp = MC88OMAGIC;
2700 case bfd_arch_h8300:
2701 switch (bfd_get_mach (abfd))
2703 case bfd_mach_h8300:
2704 *magicp = H8300MAGIC;
2706 case bfd_mach_h8300h:
2707 *magicp = H8300HMAGIC;
2709 case bfd_mach_h8300s:
2710 *magicp = H8300SMAGIC;
2716 #ifdef SH_ARCH_MAGIC_BIG
2718 #ifdef COFF_IMAGE_WITH_PE
2719 *magicp = SH_ARCH_MAGIC_WINCE;
2721 if (bfd_big_endian (abfd))
2722 *magicp = SH_ARCH_MAGIC_BIG;
2724 *magicp = SH_ARCH_MAGIC_LITTLE;
2730 #ifdef MIPS_ARCH_MAGIC_WINCE
2732 *magicp = MIPS_ARCH_MAGIC_WINCE;
2738 case bfd_arch_sparc:
2739 *magicp = SPARCMAGIC;
2741 /* Just overwrite the usual value if we're doing Lynx. */
2742 *magicp = LYNXCOFFMAGIC;
2749 case bfd_arch_h8500:
2750 *magicp = H8500MAGIC;
2754 #ifdef A29K_MAGIC_BIG
2756 if (bfd_big_endian (abfd))
2757 *magicp = A29K_MAGIC_BIG;
2759 *magicp = A29K_MAGIC_LITTLE;
2765 case bfd_arch_we32k:
2766 *magicp = WE32KMAGIC;
2772 case bfd_arch_rs6000:
2774 case bfd_arch_powerpc:
2776 BFD_ASSERT (bfd_get_flavour (abfd) == bfd_target_xcoff_flavour);
2777 *magicp = bfd_xcoff_magic_number (abfd);
2783 case bfd_arch_mcore:
2784 * magicp = MCOREMAGIC;
2794 #ifdef OR32_MAGIC_BIG
2796 if (bfd_big_endian (abfd))
2797 * magicp = OR32_MAGIC_BIG;
2799 * magicp = OR32_MAGIC_LITTLE;
2803 default: /* Unknown architecture. */
2804 /* Fall through to "return false" below, to avoid
2805 "statement never reached" errors on the one below. */
2813 coff_set_arch_mach (abfd, arch, machine)
2815 enum bfd_architecture arch;
2816 unsigned long machine;
2819 unsigned short dummy2;
2821 if (! bfd_default_set_arch_mach (abfd, arch, machine))
2824 if (arch != bfd_arch_unknown
2825 && ! coff_set_flags (abfd, &dummy1, &dummy2))
2826 return false; /* We can't represent this type */
2828 return true; /* We're easy ... */
2831 #ifdef COFF_IMAGE_WITH_PE
2833 /* This is used to sort sections by VMA, as required by PE image
2836 static int sort_by_secaddr PARAMS ((const PTR, const PTR));
2839 sort_by_secaddr (arg1, arg2)
2843 const asection *a = *(const asection **) arg1;
2844 const asection *b = *(const asection **) arg2;
2846 if (a->vma < b->vma)
2848 else if (a->vma > b->vma)
2854 #endif /* COFF_IMAGE_WITH_PE */
2856 /* Calculate the file position for each section. */
2859 #define ALIGN_SECTIONS_IN_FILE
2861 #if defined(TIC80COFF) || defined(TICOFF)
2862 #undef ALIGN_SECTIONS_IN_FILE
2866 coff_compute_section_file_positions (abfd)
2870 asection *previous = (asection *) NULL;
2871 file_ptr sofar = bfd_coff_filhsz (abfd);
2872 boolean align_adjust;
2873 #ifdef ALIGN_SECTIONS_IN_FILE
2878 /* On XCOFF, if we have symbols, set up the .debug section. */
2879 if (bfd_get_symcount (abfd) > 0)
2882 bfd_size_type i, symcount;
2886 symcount = bfd_get_symcount (abfd);
2887 for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
2889 coff_symbol_type *cf;
2891 cf = coff_symbol_from (abfd, *symp);
2893 && cf->native != NULL
2894 && SYMNAME_IN_DEBUG (&cf->native->u.syment))
2898 len = strlen (bfd_asymbol_name (*symp));
2899 if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd))
2900 sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd);
2907 dsec = bfd_make_section_old_way (abfd, ".debug");
2910 dsec->_raw_size = sz;
2911 dsec->flags |= SEC_HAS_CONTENTS;
2916 #ifdef COFF_IMAGE_WITH_PE
2918 if (coff_data (abfd)->link_info)
2920 page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
2923 page_size = PE_DEF_FILE_ALIGNMENT;
2925 #ifdef COFF_PAGE_SIZE
2926 int page_size = COFF_PAGE_SIZE;
2930 if (bfd_get_start_address (abfd))
2932 /* A start address may have been added to the original file. In this
2933 case it will need an optional header to record it. */
2934 abfd->flags |= EXEC_P;
2937 if (abfd->flags & EXEC_P)
2938 sofar += bfd_coff_aoutsz (abfd);
2940 else if (xcoff_data (abfd)->full_aouthdr)
2941 sofar += bfd_coff_aoutsz (abfd);
2943 sofar += SMALL_AOUTSZ;
2946 sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
2949 /* XCOFF handles overflows in the reloc and line number count fields
2950 by allocating a new section header to hold the correct counts. */
2951 for (current = abfd->sections; current != NULL; current = current->next)
2952 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
2953 sofar += bfd_coff_scnhsz (abfd);
2956 #ifdef COFF_IMAGE_WITH_PE
2958 /* PE requires the sections to be in memory order when listed in
2959 the section headers. It also does not like empty loadable
2960 sections. The sections apparently do not have to be in the
2961 right order in the image file itself, but we do need to get the
2962 target_index values right. */
2965 asection **section_list;
2971 for (current = abfd->sections; current != NULL; current = current->next)
2974 /* We allocate an extra cell to simplify the final loop. */
2975 amt = sizeof (struct asection *) * (count + 1);
2976 section_list = bfd_malloc (amt);
2977 if (section_list == NULL)
2981 for (current = abfd->sections; current != NULL; current = current->next)
2983 section_list[i] = current;
2986 section_list[i] = NULL;
2988 qsort (section_list, count, sizeof (asection *), sort_by_secaddr);
2990 /* Rethread the linked list into sorted order; at the same time,
2991 assign target_index values. */
2993 abfd->sections = section_list[0];
2994 for (i = 0; i < count; i++)
2996 current = section_list[i];
2997 current->next = section_list[i + 1];
2999 /* Later, if the section has zero size, we'll be throwing it
3000 away, so we don't want to number it now. Note that having
3001 a zero size and having real contents are different
3002 concepts: .bss has no contents, but (usually) non-zero
3004 if (current->_raw_size == 0)
3006 /* Discard. However, it still might have (valid) symbols
3007 in it, so arbitrarily set it to section 1 (indexing is
3008 1-based here; usually .text). __end__ and other
3009 contents of .endsection really have this happen.
3010 FIXME: This seems somewhat dubious. */
3011 current->target_index = 1;
3014 current->target_index = target_index++;
3016 abfd->section_tail = ¤t->next;
3018 free (section_list);
3020 #else /* ! COFF_IMAGE_WITH_PE */
3022 /* Set the target_index field. */
3026 for (current = abfd->sections; current != NULL; current = current->next)
3027 current->target_index = target_index++;
3029 #endif /* ! COFF_IMAGE_WITH_PE */
3031 align_adjust = false;
3032 for (current = abfd->sections;
3033 current != (asection *) NULL;
3034 current = current->next)
3036 #ifdef COFF_IMAGE_WITH_PE
3037 /* With PE we have to pad each section to be a multiple of its
3038 page size too, and remember both sizes. */
3039 if (coff_section_data (abfd, current) == NULL)
3041 bfd_size_type amt = sizeof (struct coff_section_tdata);
3042 current->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
3043 if (current->used_by_bfd == NULL)
3046 if (pei_section_data (abfd, current) == NULL)
3048 bfd_size_type amt = sizeof (struct pei_section_tdata);
3049 coff_section_data (abfd, current)->tdata
3050 = (PTR) bfd_zalloc (abfd, amt);
3051 if (coff_section_data (abfd, current)->tdata == NULL)
3054 if (pei_section_data (abfd, current)->virt_size == 0)
3055 pei_section_data (abfd, current)->virt_size = current->_raw_size;
3058 /* Only deal with sections which have contents. */
3059 if (!(current->flags & SEC_HAS_CONTENTS))
3062 #ifdef COFF_IMAGE_WITH_PE
3063 /* Make sure we skip empty sections in a PE image. */
3064 if (current->_raw_size == 0)
3068 /* Align the sections in the file to the same boundary on
3069 which they are aligned in virtual memory. I960 doesn't
3070 do this (FIXME) so we can stay in sync with Intel. 960
3071 doesn't yet page from files... */
3072 #ifdef ALIGN_SECTIONS_IN_FILE
3073 if ((abfd->flags & EXEC_P) != 0)
3075 /* make sure this section is aligned on the right boundary - by
3076 padding the previous section up if necessary */
3080 /* AIX loader checks the text section alignment of (vma - filepos)
3081 So even though the filepos may be aligned wrt the o_algntext, for
3082 AIX executables, this check fails. This shows up when an native
3083 AIX executable is stripped with gnu strip because the default vma
3084 of native is 0x10000150 but default for gnu is 0x10000140. Gnu
3085 stripped gnu excutable passes this check because the filepos is
3086 0x0140. This problem also show up with 64 bit shared objects. The
3087 data section must also be aligned. */
3088 if (!strcmp (current->name, _TEXT)
3089 || !strcmp (current->name, _DATA))
3094 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3096 align = 1 << current->alignment_power;
3097 pad = abs (current->vma - sofar) % align;
3108 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3111 if (previous != (asection *) NULL)
3113 previous->_raw_size += sofar - old_sofar;
3119 /* In demand paged files the low order bits of the file offset
3120 must match the low order bits of the virtual address. */
3121 #ifdef COFF_PAGE_SIZE
3122 if ((abfd->flags & D_PAGED) != 0
3123 && (current->flags & SEC_ALLOC) != 0)
3124 sofar += (current->vma - sofar) % page_size;
3126 current->filepos = sofar;
3128 #ifdef COFF_IMAGE_WITH_PE
3129 /* Set the padded size. */
3130 current->_raw_size = (current->_raw_size + page_size -1) & -page_size;
3133 sofar += current->_raw_size;
3135 #ifdef ALIGN_SECTIONS_IN_FILE
3136 /* make sure that this section is of the right size too */
3137 if ((abfd->flags & EXEC_P) == 0)
3139 bfd_size_type old_size;
3141 old_size = current->_raw_size;
3142 current->_raw_size = BFD_ALIGN (current->_raw_size,
3143 1 << current->alignment_power);
3144 align_adjust = current->_raw_size != old_size;
3145 sofar += current->_raw_size - old_size;
3150 sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3151 align_adjust = sofar != old_sofar;
3152 current->_raw_size += sofar - old_sofar;
3156 #ifdef COFF_IMAGE_WITH_PE
3157 /* For PE we need to make sure we pad out to the aligned
3158 _raw_size, in case the caller only writes out data to the
3159 unaligned _raw_size. */
3160 if (pei_section_data (abfd, current)->virt_size < current->_raw_size)
3161 align_adjust = true;
3165 /* Force .lib sections to start at zero. The vma is then
3166 incremented in coff_set_section_contents. This is right for
3168 if (strcmp (current->name, _LIB) == 0)
3169 bfd_set_section_vma (abfd, current, 0);
3175 /* It is now safe to write to the output file. If we needed an
3176 alignment adjustment for the last section, then make sure that
3177 there is a byte at offset sofar. If there are no symbols and no
3178 relocs, then nothing follows the last section. If we don't force
3179 the last byte out, then the file may appear to be truncated. */
3185 if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
3186 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
3190 /* Make sure the relocations are aligned. We don't need to make
3191 sure that this byte exists, because it will only matter if there
3192 really are relocs. */
3193 sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
3195 obj_relocbase (abfd) = sofar;
3196 abfd->output_has_begun = true;
3203 /* This can never work, because it is called too late--after the
3204 section positions have been set. I can't figure out what it is
3205 for, so I am going to disable it--Ian Taylor 20 March 1996. */
3207 /* If .file, .text, .data, .bss symbols are missing, add them. */
3208 /* @@ Should we only be adding missing symbols, or overriding the aux
3209 values for existing section symbols? */
3211 coff_add_missing_symbols (abfd)
3214 unsigned int nsyms = bfd_get_symcount (abfd);
3215 asymbol **sympp = abfd->outsymbols;
3218 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
3221 for (i = 0; i < nsyms; i++)
3223 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
3227 /* only do this if there is a coff representation of the input
3229 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
3234 name = csym->symbol.name;
3237 if (!strcmp (name, _TEXT))
3240 else if (!strcmp (name, ".wtext"))
3243 else if (!strcmp (name, _DATA))
3245 else if (!strcmp (name, _BSS))
3249 /* Now i == bfd_get_symcount (abfd). */
3250 /* @@ For now, don't deal with .file symbol. */
3253 if (!need_text && !need_data && !need_bss && !need_file)
3255 nsyms += need_text + need_data + need_bss + need_file;
3257 amt *= sizeof (asymbol *);
3258 sympp2 = (asymbol **) bfd_alloc (abfd, amt);
3261 memcpy (sympp2, sympp, i * sizeof (asymbol *));
3264 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
3268 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
3270 sympp2[i++] = coff_section_symbol (abfd, _DATA);
3272 sympp2[i++] = coff_section_symbol (abfd, _BSS);
3273 BFD_ASSERT (i == nsyms);
3274 bfd_set_symtab (abfd, sympp2, nsyms);
3280 #ifdef COFF_IMAGE_WITH_PE
3282 static unsigned int pelength;
3283 static unsigned int peheader;
3286 coff_read_word (abfd, value)
3288 unsigned int *value;
3293 status = bfd_bread (b, (bfd_size_type) 2, abfd);
3301 *value = (unsigned int) b[0];
3303 *value = (unsigned int) (b[0] + (b[1] << 8));
3305 pelength += (unsigned int) status;
3311 coff_compute_checksum (abfd)
3321 filepos = (file_ptr) 0;
3325 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
3328 more_data = coff_read_word (abfd, &value);
3330 total = 0xffff & (total + (total >> 0x10));
3335 return (0xffff & (total + (total >> 0x10)));
3339 coff_apply_checksum (abfd)
3342 unsigned int computed;
3343 unsigned int checksum = 0;
3345 if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0)
3348 if (!coff_read_word (abfd, &peheader))
3351 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3355 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3357 if (bfd_seek (abfd, peheader, SEEK_SET) != 0)
3360 computed = coff_compute_checksum (abfd);
3362 checksum = computed + pelength;
3364 if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3367 bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3372 #endif /* COFF_IMAGE_WITH_PE */
3377 coff_write_object_contents (abfd)
3381 boolean hasrelocs = false;
3382 boolean haslinno = false;
3383 boolean hasdebug = false;
3385 file_ptr reloc_base;
3386 file_ptr lineno_base;
3388 unsigned long reloc_size = 0, reloc_count = 0;
3389 unsigned long lnno_size = 0;
3390 boolean long_section_names;
3391 asection *text_sec = NULL;
3392 asection *data_sec = NULL;
3393 asection *bss_sec = NULL;
3394 struct internal_filehdr internal_f;
3395 struct internal_aouthdr internal_a;
3396 #ifdef COFF_LONG_SECTION_NAMES
3397 size_t string_size = STRING_SIZE_SIZE;
3400 bfd_set_error (bfd_error_system_call);
3402 /* Make a pass through the symbol table to count line number entries and
3403 put them into the correct asections */
3405 lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd);
3407 if (! abfd->output_has_begun)
3409 if (! coff_compute_section_file_positions (abfd))
3413 reloc_base = obj_relocbase (abfd);
3415 /* Work out the size of the reloc and linno areas */
3417 for (current = abfd->sections; current != NULL; current =
3421 /* we store the actual reloc count in the first reloc's addr */
3422 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3425 reloc_count += current->reloc_count;
3428 reloc_size = reloc_count * bfd_coff_relsz (abfd);
3430 lineno_base = reloc_base + reloc_size;
3431 sym_base = lineno_base + lnno_size;
3433 /* Indicate in each section->line_filepos its actual file address */
3434 for (current = abfd->sections; current != NULL; current =
3437 if (current->lineno_count)
3439 current->line_filepos = lineno_base;
3440 current->moving_line_filepos = lineno_base;
3441 lineno_base += current->lineno_count * bfd_coff_linesz (abfd);
3445 current->line_filepos = 0;
3447 if (current->reloc_count)
3449 current->rel_filepos = reloc_base;
3450 reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
3452 /* extra reloc to hold real count */
3453 if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3454 reloc_base += bfd_coff_relsz (abfd);
3459 current->rel_filepos = 0;
3463 /* Write section headers to the file. */
3464 internal_f.f_nscns = 0;
3466 if ((abfd->flags & EXEC_P) != 0)
3467 scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
3470 scn_base = bfd_coff_filhsz (abfd);
3473 if (xcoff_data (abfd)->full_aouthdr)
3474 scn_base += bfd_coff_aoutsz (abfd);
3476 scn_base += SMALL_AOUTSZ;
3481 if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
3484 long_section_names = false;
3485 for (current = abfd->sections;
3487 current = current->next)
3489 struct internal_scnhdr section;
3490 boolean is_reloc_section = false;
3492 #ifdef COFF_IMAGE_WITH_PE
3493 if (strcmp (current->name, ".reloc") == 0)
3495 is_reloc_section = true;
3497 pe_data (abfd)->has_reloc_section = 1;
3501 internal_f.f_nscns++;
3503 strncpy (section.s_name, current->name, SCNNMLEN);
3505 #ifdef COFF_LONG_SECTION_NAMES
3506 /* Handle long section names as in PE. This must be compatible
3507 with the code in coff_write_symbols and _bfd_coff_final_link. */
3511 len = strlen (current->name);
3514 memset (section.s_name, 0, SCNNMLEN);
3515 sprintf (section.s_name, "/%lu", (unsigned long) string_size);
3516 string_size += len + 1;
3517 long_section_names = true;
3523 /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
3524 Ian Taylor <ian@cygnus.com>. */
3525 if (strcmp (current->name, _LIB) == 0)
3526 section.s_vaddr = 0;
3529 section.s_vaddr = current->vma;
3530 section.s_paddr = current->lma;
3531 section.s_size = current->_raw_size;
3532 #ifdef coff_get_section_load_page
3533 section.s_page = coff_get_section_load_page (current);
3537 section.s_paddr = 0;
3539 #ifdef COFF_IMAGE_WITH_PE
3540 /* Reminder: s_paddr holds the virtual size of the section. */
3541 if (coff_section_data (abfd, current) != NULL
3542 && pei_section_data (abfd, current) != NULL)
3543 section.s_paddr = pei_section_data (abfd, current)->virt_size;
3545 section.s_paddr = 0;
3549 If this section has no size or is unloadable then the scnptr
3552 if (current->_raw_size == 0 ||
3553 (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
3555 section.s_scnptr = 0;
3559 section.s_scnptr = current->filepos;
3561 section.s_relptr = current->rel_filepos;
3562 section.s_lnnoptr = current->line_filepos;
3563 section.s_nreloc = current->reloc_count;
3564 section.s_nlnno = current->lineno_count;
3565 #ifndef COFF_IMAGE_WITH_PE
3566 /* In PEI, relocs come in the .reloc section. */
3567 if (current->reloc_count != 0)
3570 if (current->lineno_count != 0)
3572 if ((current->flags & SEC_DEBUGGING) != 0
3573 && ! is_reloc_section)
3578 /* Indicate the use of an XCOFF overflow section header. */
3579 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3581 section.s_nreloc = 0xffff;
3582 section.s_nlnno = 0xffff;
3587 section.s_flags = sec_to_styp_flags (current->name, current->flags);
3589 if (!strcmp (current->name, _TEXT))
3593 else if (!strcmp (current->name, _DATA))
3597 else if (!strcmp (current->name, _BSS))
3603 section.s_align = (current->alignment_power
3604 ? 1 << current->alignment_power
3608 /* TI COFF puts the alignment power in bits 8-11 of the flags */
3609 section.s_flags |= (current->alignment_power & 0xF) << 8;
3611 #ifdef COFF_ENCODE_ALIGNMENT
3612 COFF_ENCODE_ALIGNMENT(section, current->alignment_power);
3615 #ifdef COFF_IMAGE_WITH_PE
3616 /* Suppress output of the sections if they are null. ld
3617 includes the bss and data sections even if there is no size
3618 assigned to them. NT loader doesn't like it if these section
3619 headers are included if the sections themselves are not
3620 needed. See also coff_compute_section_file_positions. */
3621 if (section.s_size == 0)
3622 internal_f.f_nscns--;
3627 bfd_size_type amt = bfd_coff_scnhsz (abfd);
3629 if (coff_swap_scnhdr_out (abfd, §ion, &buff) == 0
3630 || bfd_bwrite ((PTR) &buff, amt, abfd) != amt)
3635 /* PE stores COMDAT section information in the symbol table. If
3636 this section is supposed to have some COMDAT info, track down
3637 the symbol in the symbol table and modify it. */
3638 if ((current->flags & SEC_LINK_ONCE) != 0)
3640 unsigned int i, count;
3642 coff_symbol_type *csym = NULL;
3646 count = bfd_get_symcount (abfd);
3647 for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
3649 if ((*psym)->section != current)
3652 /* Remember the location of the first symbol in this
3654 if (psymsec == NULL)
3657 /* See if this is the section symbol. */
3658 if (strcmp ((*psym)->name, current->name) == 0)
3660 csym = coff_symbol_from (abfd, *psym);
3662 || csym->native == NULL
3663 || csym->native->u.syment.n_numaux < 1
3664 || csym->native->u.syment.n_sclass != C_STAT
3665 || csym->native->u.syment.n_type != T_NULL)
3668 /* Here *PSYM is the section symbol for CURRENT. */
3675 Note that we might not if we're converting the file from
3676 some other object file format. */
3679 combined_entry_type *aux;
3681 /* We don't touch the x_checksum field. The
3682 x_associated field is not currently supported. */
3684 aux = csym->native + 1;
3685 switch (current->flags & SEC_LINK_DUPLICATES)
3687 case SEC_LINK_DUPLICATES_DISCARD:
3688 aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
3691 case SEC_LINK_DUPLICATES_ONE_ONLY:
3692 aux->u.auxent.x_scn.x_comdat =
3693 IMAGE_COMDAT_SELECT_NODUPLICATES;
3696 case SEC_LINK_DUPLICATES_SAME_SIZE:
3697 aux->u.auxent.x_scn.x_comdat =
3698 IMAGE_COMDAT_SELECT_SAME_SIZE;
3701 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
3702 aux->u.auxent.x_scn.x_comdat =
3703 IMAGE_COMDAT_SELECT_EXACT_MATCH;
3707 /* The COMDAT symbol must be the first symbol from this
3708 section in the symbol table. In order to make this
3709 work, we move the COMDAT symbol before the first
3710 symbol we found in the search above. It's OK to
3711 rearrange the symbol table at this point, because
3712 coff_renumber_symbols is going to rearrange it
3713 further and fix up all the aux entries. */
3714 if (psym != psymsec)
3720 for (pcopy = psym; pcopy > psymsec; pcopy--)
3721 pcopy[0] = pcopy[-1];
3726 #endif /* COFF_WITH_PE */
3731 /* XCOFF handles overflows in the reloc and line number count fields
3732 by creating a new section header to hold the correct values. */
3733 for (current = abfd->sections; current != NULL; current = current->next)
3735 if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3737 struct internal_scnhdr scnhdr;
3741 internal_f.f_nscns++;
3742 strncpy (&(scnhdr.s_name[0]), current->name, 8);
3743 scnhdr.s_paddr = current->reloc_count;
3744 scnhdr.s_vaddr = current->lineno_count;
3746 scnhdr.s_scnptr = 0;
3747 scnhdr.s_relptr = current->rel_filepos;
3748 scnhdr.s_lnnoptr = current->line_filepos;
3749 scnhdr.s_nreloc = current->target_index;
3750 scnhdr.s_nlnno = current->target_index;
3751 scnhdr.s_flags = STYP_OVRFLO;
3752 amt = bfd_coff_scnhsz (abfd);
3753 if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
3754 || bfd_bwrite ((PTR) &buff, amt, abfd) != amt)
3761 /* OK, now set up the filehdr... */
3763 /* Don't include the internal abs section in the section count */
3766 We will NOT put a fucking timestamp in the header here. Every time you
3767 put it back, I will come in and take it out again. I'm sorry. This
3768 field does not belong here. We fill it with a 0 so it compares the
3769 same but is not a reasonable time. -- gnu@cygnus.com
3771 internal_f.f_timdat = 0;
3773 internal_f.f_flags = 0;
3775 if (abfd->flags & EXEC_P)
3776 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3779 internal_f.f_opthdr = 0;
3782 if (xcoff_data (abfd)->full_aouthdr)
3783 internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
3785 internal_f.f_opthdr = SMALL_AOUTSZ;
3791 internal_f.f_flags |= F_RELFLG;
3793 internal_f.f_flags |= F_LNNO;
3794 if (abfd->flags & EXEC_P)
3795 internal_f.f_flags |= F_EXEC;
3796 #ifdef COFF_IMAGE_WITH_PE
3798 internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED;
3801 #ifndef COFF_WITH_PE
3802 if (bfd_little_endian (abfd))
3803 internal_f.f_flags |= F_AR32WR;
3805 internal_f.f_flags |= F_AR32W;
3809 /* target id is used in TI COFF v1 and later; COFF0 won't use this field,
3810 but it doesn't hurt to set it internally */
3811 internal_f.f_target_id = TI_TARGET_ID;
3813 #ifdef TIC80_TARGET_ID
3814 internal_f.f_target_id = TIC80_TARGET_ID;
3818 FIXME, should do something about the other byte orders and
3823 if ((abfd->flags & DYNAMIC) != 0)
3824 internal_f.f_flags |= F_SHROBJ;
3825 if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
3826 internal_f.f_flags |= F_DYNLOAD;
3829 memset (&internal_a, 0, sizeof internal_a);
3831 /* Set up architecture-dependent stuff */
3834 unsigned int magic = 0;
3835 unsigned short flags = 0;
3836 coff_set_flags (abfd, &magic, &flags);
3837 internal_f.f_magic = magic;
3838 internal_f.f_flags |= flags;
3839 /* ...and the "opt"hdr... */
3842 #ifdef ULTRA3 /* NYU's machine */
3843 /* FIXME: This is a bogus check. I really want to see if there
3844 * is a .shbss or a .shdata section, if so then set the magic
3845 * number to indicate a shared data executable.
3847 if (internal_f.f_nscns >= 7)
3848 internal_a.magic = SHMAGIC; /* Shared magic */
3851 internal_a.magic = NMAGIC; /* Assume separate i/d */
3852 #define __A_MAGIC_SET__
3854 #ifdef TICOFF_AOUT_MAGIC
3855 internal_a.magic = TICOFF_AOUT_MAGIC;
3856 #define __A_MAGIC_SET__
3859 internal_a.magic = TIC80_ARCH_MAGIC;
3860 #define __A_MAGIC_SET__
3863 /* FIXME: What are the a.out magic numbers for the i860? */
3864 internal_a.magic = 0;
3865 #define __A_MAGIC_SET__
3868 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
3869 #define __A_MAGIC_SET__
3872 #define __A_MAGIC_SET__
3873 internal_a.magic = PAGEMAGICBCS;
3877 #define __A_MAGIC_SET__
3878 internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
3881 #if defined(M68) || defined(WE32K) || defined(M68K)
3882 #define __A_MAGIC_SET__
3884 internal_a.magic = LYNXCOFFMAGIC;
3886 #if defined(TARG_AUX)
3887 internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
3888 abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
3889 PAGEMAGICEXECSWAPPED);
3891 #if defined (PAGEMAGICPEXECPAGED)
3892 internal_a.magic = PAGEMAGICPEXECPAGED;
3894 #endif /* TARG_AUX */
3896 #endif /* M68 || WE32K || M68K */
3899 #define __A_MAGIC_SET__
3900 internal_a.magic = ZMAGIC;
3904 #define __A_MAGIC_SET__
3905 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3908 #if defined MCORE_PE
3909 #define __A_MAGIC_SET__
3910 internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
3914 #define __A_MAGIC_SET__
3916 internal_a.magic = LYNXCOFFMAGIC;
3918 internal_a.magic = ZMAGIC;
3923 #define __A_MAGIC_SET__
3924 internal_a.magic = ZMAGIC;
3928 #define __A_MAGIC_SET__
3930 internal_a.magic = LYNXCOFFMAGIC;
3935 #define __A_MAGIC_SET__
3936 internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
3937 (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
3938 RS6K_AOUTHDR_OMAGIC;
3941 #if defined(SH) && defined(COFF_WITH_PE)
3942 #define __A_MAGIC_SET__
3943 internal_a.magic = SH_PE_MAGIC;
3946 #if defined(MIPS) && defined(COFF_WITH_PE)
3947 #define __A_MAGIC_SET__
3948 internal_a.magic = MIPS_PE_MAGIC;
3952 #define __A_MAGIC_SET__
3953 internal_a.magic = NMAGIC; /* Assume separate i/d. */
3956 #ifndef __A_MAGIC_SET__
3957 #include "Your aouthdr magic number is not being set!"
3959 #undef __A_MAGIC_SET__
3963 /* FIXME: Does anybody ever set this to another value? */
3964 internal_a.vstamp = 0;
3966 /* Now should write relocs, strings, syms */
3967 obj_sym_filepos (abfd) = sym_base;
3969 if (bfd_get_symcount (abfd) != 0)
3973 if (!coff_add_missing_symbols (abfd))
3976 if (!coff_renumber_symbols (abfd, &firstundef))
3978 coff_mangle_symbols (abfd);
3979 if (! coff_write_symbols (abfd))
3981 if (! coff_write_linenumbers (abfd))
3983 if (! coff_write_relocs (abfd, firstundef))
3986 #ifdef COFF_LONG_SECTION_NAMES
3987 else if (long_section_names && ! obj_coff_strings_written (abfd))
3989 /* If we have long section names we have to write out the string
3990 table even if there are no symbols. */
3991 if (! coff_write_symbols (abfd))
3995 #ifdef COFF_IMAGE_WITH_PE
3997 else if ((abfd->flags & EXEC_P) != 0)
4001 /* PowerPC PE appears to require that all executable files be
4002 rounded up to the page size. */
4005 (file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
4007 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
4013 /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
4014 backend linker, and obj_raw_syment_count is not valid until after
4015 coff_write_symbols is called. */
4016 if (obj_raw_syment_count (abfd) != 0)
4018 internal_f.f_symptr = sym_base;
4020 /* AIX appears to require that F_RELFLG not be set if there are
4021 local symbols but no relocations. */
4022 internal_f.f_flags &=~ F_RELFLG;
4027 if (long_section_names)
4028 internal_f.f_symptr = sym_base;
4030 internal_f.f_symptr = 0;
4031 internal_f.f_flags |= F_LSYMS;
4036 internal_a.tsize = bfd_get_section_size_before_reloc (text_sec);
4037 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
4041 internal_a.dsize = bfd_get_section_size_before_reloc (data_sec);
4042 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
4046 internal_a.bsize = bfd_get_section_size_before_reloc (bss_sec);
4047 if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
4048 internal_a.data_start = bss_sec->vma;
4051 internal_a.entry = bfd_get_start_address (abfd);
4052 internal_f.f_nsyms = obj_raw_syment_count (abfd);
4055 if (xcoff_data (abfd)->full_aouthdr)
4058 asection *loader_sec;
4060 internal_a.vstamp = 1;
4062 internal_a.o_snentry = xcoff_data (abfd)->snentry;
4063 if (internal_a.o_snentry == 0)
4064 internal_a.entry = (bfd_vma) -1;
4066 if (text_sec != NULL)
4068 internal_a.o_sntext = text_sec->target_index;
4069 internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
4073 internal_a.o_sntext = 0;
4074 internal_a.o_algntext = 0;
4076 if (data_sec != NULL)
4078 internal_a.o_sndata = data_sec->target_index;
4079 internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
4083 internal_a.o_sndata = 0;
4084 internal_a.o_algndata = 0;
4086 loader_sec = bfd_get_section_by_name (abfd, ".loader");
4087 if (loader_sec != NULL)
4088 internal_a.o_snloader = loader_sec->target_index;
4090 internal_a.o_snloader = 0;
4091 if (bss_sec != NULL)
4092 internal_a.o_snbss = bss_sec->target_index;
4094 internal_a.o_snbss = 0;
4096 toc = xcoff_data (abfd)->toc;
4097 internal_a.o_toc = toc;
4098 internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
4100 internal_a.o_modtype = xcoff_data (abfd)->modtype;
4101 if (xcoff_data (abfd)->cputype != -1)
4102 internal_a.o_cputype = xcoff_data (abfd)->cputype;
4105 switch (bfd_get_arch (abfd))
4107 case bfd_arch_rs6000:
4108 internal_a.o_cputype = 4;
4110 case bfd_arch_powerpc:
4111 if (bfd_get_mach (abfd) == bfd_mach_ppc)
4112 internal_a.o_cputype = 3;
4114 internal_a.o_cputype = 1;
4120 internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
4121 internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
4125 /* now write them */
4126 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
4131 bfd_size_type amount = bfd_coff_filhsz (abfd);
4133 buff = bfd_malloc (amount);
4137 bfd_coff_swap_filehdr_out (abfd, (PTR) &internal_f, (PTR) buff);
4138 amount = bfd_bwrite ((PTR) buff, amount, abfd);
4142 if (amount != bfd_coff_filhsz (abfd))
4146 if (abfd->flags & EXEC_P)
4148 /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
4149 include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)) */
4151 bfd_size_type amount = bfd_coff_aoutsz (abfd);
4153 buff = bfd_malloc (amount);
4157 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) buff);
4158 amount = bfd_bwrite ((PTR) buff, amount, abfd);
4162 if (amount != bfd_coff_aoutsz (abfd))
4165 #ifdef COFF_IMAGE_WITH_PE
4166 if (! coff_apply_checksum (abfd))
4176 /* XCOFF seems to always write at least a small a.out header. */
4177 coff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff);
4178 if (xcoff_data (abfd)->full_aouthdr)
4179 size = bfd_coff_aoutsz (abfd);
4181 size = SMALL_AOUTSZ;
4182 if (bfd_bwrite ((PTR) &buff, (bfd_size_type) size, abfd) != size)
4191 coff_set_section_contents (abfd, section, location, offset, count)
4196 bfd_size_type count;
4198 if (! abfd->output_has_begun) /* set by bfd.c handler */
4200 if (! coff_compute_section_file_positions (abfd))
4204 #if defined(_LIB) && !defined(TARG_AUX)
4206 /* The physical address field of a .lib section is used to hold the
4207 number of shared libraries in the section. This code counts the
4208 number of sections being written, and increments the lma field
4211 I have found no documentation on the contents of this section.
4212 Experimentation indicates that the section contains zero or more
4213 records, each of which has the following structure:
4215 - a (four byte) word holding the length of this record, in words,
4216 - a word that always seems to be set to "2",
4217 - the path to a shared library, null-terminated and then padded
4218 to a whole word boundary.
4220 bfd_assert calls have been added to alert if an attempt is made
4221 to write a section which doesn't follow these assumptions. The
4222 code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4223 <robertl@arnet.com> (Thanks!).
4225 Gvran Uddeborg <gvran@uddeborg.pp.se> */
4227 if (strcmp (section->name, _LIB) == 0)
4229 bfd_byte *rec, *recend;
4231 rec = (bfd_byte *) location;
4232 recend = rec + count;
4233 while (rec < recend)
4236 rec += bfd_get_32 (abfd, rec) * 4;
4239 BFD_ASSERT (rec == recend);
4244 /* Don't write out bss sections - one way to do this is to
4245 see if the filepos has not been set. */
4246 if (section->filepos == 0)
4249 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
4255 return bfd_bwrite (location, count, abfd) == count;
4259 coff_close_and_cleanup (abfd)
4262 if (!bfd_read_p (abfd))
4263 switch (abfd->format)
4266 if (!_bfd_write_archive_contents (abfd))
4270 if (!coff_write_object_contents (abfd))
4274 bfd_set_error (bfd_error_invalid_operation);
4278 /* We depend on bfd_close to free all the memory on the objalloc. */
4285 buy_and_read (abfd, where, size)
4290 PTR area = (PTR) bfd_alloc (abfd, size);
4293 if (bfd_seek (abfd, where, SEEK_SET) != 0
4294 || bfd_bread (area, size, abfd) != size)
4297 } /* buy_and_read() */
4303 Creating the linenumber table is done by reading in the entire
4304 coff linenumber table, and creating another table for internal use.
4306 A coff linenumber table is structured so that each function
4307 is marked as having a line number of 0. Each line within the
4308 function is an offset from the first line in the function. The
4309 base of the line number information for the table is stored in
4310 the symbol associated with the function.
4312 Note: The PE format uses line number 0 for a flag indicating a
4315 The information is copied from the external to the internal
4316 table, and each symbol which marks a function is marked by
4319 How does this work ?
4324 coff_slurp_line_table (abfd, asect)
4328 LINENO *native_lineno;
4329 alent *lineno_cache;
4332 BFD_ASSERT (asect->lineno == (alent *) NULL);
4334 amt = (bfd_size_type) bfd_coff_linesz (abfd) * asect->lineno_count;
4335 native_lineno = (LINENO *) buy_and_read (abfd, asect->line_filepos, amt);
4336 amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent);
4337 lineno_cache = (alent *) bfd_alloc (abfd, amt);
4338 if (lineno_cache == NULL)
4342 unsigned int counter = 0;
4343 alent *cache_ptr = lineno_cache;
4344 LINENO *src = native_lineno;
4346 while (counter < asect->lineno_count)
4348 struct internal_lineno dst;
4349 bfd_coff_swap_lineno_in (abfd, src, &dst);
4350 cache_ptr->line_number = dst.l_lnno;
4352 if (cache_ptr->line_number == 0)
4355 bfd_signed_vma symndx;
4356 coff_symbol_type *sym;
4359 symndx = dst.l_addr.l_symndx;
4361 || (bfd_vma) symndx >= obj_raw_syment_count (abfd))
4363 (*_bfd_error_handler)
4364 (_("%s: warning: illegal symbol index %ld in line numbers"),
4365 bfd_archive_filename (abfd), dst.l_addr.l_symndx);
4369 /* FIXME: We should not be casting between ints and
4370 pointers like this. */
4371 sym = ((coff_symbol_type *)
4372 ((symndx + obj_raw_syments (abfd))
4373 ->u.syment._n._n_n._n_zeroes));
4374 cache_ptr->u.sym = (asymbol *) sym;
4375 if (sym->lineno != NULL && ! warned)
4377 (*_bfd_error_handler)
4378 (_("%s: warning: duplicate line number information for `%s'"),
4379 bfd_archive_filename (abfd),
4380 bfd_asymbol_name (&sym->symbol));
4382 sym->lineno = cache_ptr;
4386 cache_ptr->u.offset = dst.l_addr.l_paddr
4387 - bfd_section_vma (abfd, asect);
4388 } /* If no linenumber expect a symbol index */
4394 cache_ptr->line_number = 0;
4397 asect->lineno = lineno_cache;
4398 /* FIXME, free native_lineno here, or use alloca or something. */
4402 /* Slurp in the symbol table, converting it to generic form. Note
4403 that if coff_relocate_section is defined, the linker will read
4404 symbols via coff_link_add_symbols, rather than via this routine. */
4407 coff_slurp_symbol_table (abfd)
4410 combined_entry_type *native_symbols;
4411 coff_symbol_type *cached_area;
4412 unsigned int *table_ptr;
4415 unsigned int number_of_symbols = 0;
4417 if (obj_symbols (abfd))
4420 /* Read in the symbol table */
4421 if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
4426 /* Allocate enough room for all the symbols in cached form */
4427 amt = obj_raw_syment_count (abfd);
4428 amt *= sizeof (coff_symbol_type);
4429 cached_area = (coff_symbol_type *) bfd_alloc (abfd, amt);
4430 if (cached_area == NULL)
4433 amt = obj_raw_syment_count (abfd);
4434 amt *= sizeof (unsigned int);
4435 table_ptr = (unsigned int *) bfd_alloc (abfd, amt);
4437 if (table_ptr == NULL)
4441 coff_symbol_type *dst = cached_area;
4442 unsigned int last_native_index = obj_raw_syment_count (abfd);
4443 unsigned int this_index = 0;
4444 while (this_index < last_native_index)
4446 combined_entry_type *src = native_symbols + this_index;
4447 table_ptr[this_index] = number_of_symbols;
4448 dst->symbol.the_bfd = abfd;
4450 dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
4451 /* We use the native name field to point to the cached field. */
4452 src->u.syment._n._n_n._n_zeroes = (long) dst;
4453 dst->symbol.section = coff_section_from_bfd_index (abfd,
4454 src->u.syment.n_scnum);
4455 dst->symbol.flags = 0;
4456 dst->done_lineno = false;
4458 switch (src->u.syment.n_sclass)
4463 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
4464 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4465 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4467 /* Fall through to next case */
4475 case C_THUMBEXTFUNC:
4481 case C_SYSTEM: /* System Wide variable */
4484 /* In PE, 0x68 (104) denotes a section symbol */
4486 /* In PE, 0x69 (105) denotes a weak external symbol. */
4489 switch (coff_classify_symbol (abfd, &src->u.syment))
4491 case COFF_SYMBOL_GLOBAL:
4492 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4493 #if defined COFF_WITH_PE
4494 /* PE sets the symbol to a value relative to the
4495 start of the section. */
4496 dst->symbol.value = src->u.syment.n_value;
4498 dst->symbol.value = (src->u.syment.n_value
4499 - dst->symbol.section->vma);
4501 if (ISFCN ((src->u.syment.n_type)))
4503 /* A function ext does not go at the end of a
4505 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4509 case COFF_SYMBOL_COMMON:
4510 dst->symbol.section = bfd_com_section_ptr;
4511 dst->symbol.value = src->u.syment.n_value;
4514 case COFF_SYMBOL_UNDEFINED:
4515 dst->symbol.section = bfd_und_section_ptr;
4516 dst->symbol.value = 0;
4519 case COFF_SYMBOL_PE_SECTION:
4520 dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM;
4521 dst->symbol.value = 0;
4524 case COFF_SYMBOL_LOCAL:
4525 dst->symbol.flags = BSF_LOCAL;
4526 #if defined COFF_WITH_PE
4527 /* PE sets the symbol to a value relative to the
4528 start of the section. */
4529 dst->symbol.value = src->u.syment.n_value;
4531 dst->symbol.value = (src->u.syment.n_value
4532 - dst->symbol.section->vma);
4534 if (ISFCN ((src->u.syment.n_type)))
4535 dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4540 /* A symbol with a csect entry should not go at the end. */
4541 if (src->u.syment.n_numaux > 0)
4542 dst->symbol.flags |= BSF_NOT_AT_END;
4546 if (src->u.syment.n_sclass == C_NT_WEAK)
4547 dst->symbol.flags |= BSF_WEAK;
4549 if (src->u.syment.n_sclass == C_SECTION
4550 && src->u.syment.n_scnum > 0)
4551 dst->symbol.flags = BSF_LOCAL;
4553 if (src->u.syment.n_sclass == C_WEAKEXT)
4554 dst->symbol.flags |= BSF_WEAK;
4558 case C_STAT: /* static */
4560 case C_LEAFSTAT: /* static leaf procedure */
4563 case C_THUMBSTAT: /* Thumb static */
4564 case C_THUMBLABEL: /* Thumb label */
4565 case C_THUMBSTATFUNC:/* Thumb static function */
4567 case C_LABEL: /* label */
4568 if (src->u.syment.n_scnum == N_DEBUG)
4569 dst->symbol.flags = BSF_DEBUGGING;
4571 dst->symbol.flags = BSF_LOCAL;
4573 /* Base the value as an index from the base of the
4574 section, if there is one. */
4575 if (dst->symbol.section)
4577 #if defined COFF_WITH_PE
4578 /* PE sets the symbol to a value relative to the
4579 start of the section. */
4580 dst->symbol.value = src->u.syment.n_value;
4582 dst->symbol.value = (src->u.syment.n_value
4583 - dst->symbol.section->vma);
4587 dst->symbol.value = src->u.syment.n_value;
4590 case C_MOS: /* member of structure */
4591 case C_EOS: /* end of structure */
4592 #ifdef NOTDEF /* C_AUTOARG has the same value */
4594 case C_GLBLREG: /* A29k-specific storage class */
4597 case C_REGPARM: /* register parameter */
4598 case C_REG: /* register variable */
4599 /* C_AUTOARG conflictes with TI COFF C_UEXT */
4600 #if !defined (TIC80COFF) && !defined (TICOFF)
4602 case C_AUTOARG: /* 960-specific storage class */
4605 case C_TPDEF: /* type definition */
4607 case C_AUTO: /* automatic variable */
4608 case C_FIELD: /* bit field */
4609 case C_ENTAG: /* enumeration tag */
4610 case C_MOE: /* member of enumeration */
4611 case C_MOU: /* member of union */
4612 case C_UNTAG: /* union tag */
4613 dst->symbol.flags = BSF_DEBUGGING;
4614 dst->symbol.value = (src->u.syment.n_value);
4617 case C_FILE: /* file name */
4618 case C_STRTAG: /* structure tag */
4633 dst->symbol.flags = BSF_DEBUGGING;
4634 dst->symbol.value = (src->u.syment.n_value);
4638 case C_BINCL: /* beginning of include file */
4639 case C_EINCL: /* ending of include file */
4640 /* The value is actually a pointer into the line numbers
4641 of the file. We locate the line number entry, and
4642 set the section to the section which contains it, and
4643 the value to the index in that section. */
4647 dst->symbol.flags = BSF_DEBUGGING;
4648 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4649 if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
4650 && ((file_ptr) (sec->line_filepos
4651 + sec->lineno_count * bfd_coff_linesz (abfd))
4652 > (file_ptr) src->u.syment.n_value))
4655 dst->symbol.value = 0;
4658 dst->symbol.section = sec;
4659 dst->symbol.value = ((src->u.syment.n_value
4660 - sec->line_filepos)
4661 / bfd_coff_linesz (abfd));
4668 dst->symbol.flags = BSF_DEBUGGING;
4670 /* The value is actually a symbol index. Save a pointer
4671 to the symbol instead of the index. FIXME: This
4672 should use a union. */
4673 src->u.syment.n_value =
4674 (long) (native_symbols + src->u.syment.n_value);
4675 dst->symbol.value = src->u.syment.n_value;
4680 case C_BLOCK: /* ".bb" or ".eb" */
4681 case C_FCN: /* ".bf" or ".ef" (or PE ".lf") */
4682 case C_EFCN: /* physical end of function */
4683 #if defined COFF_WITH_PE
4684 /* PE sets the symbol to a value relative to the start
4686 dst->symbol.value = src->u.syment.n_value;
4687 if (strcmp (dst->symbol.name, ".bf") != 0)
4689 /* PE uses funny values for .ef and .lf; don't
4691 dst->symbol.flags = BSF_DEBUGGING;
4694 dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC;
4696 /* Base the value as an index from the base of the
4698 dst->symbol.flags = BSF_LOCAL;
4699 dst->symbol.value = (src->u.syment.n_value
4700 - dst->symbol.section->vma);
4704 case C_STATLAB: /* Static load time label */
4705 dst->symbol.value = src->u.syment.n_value;
4706 dst->symbol.flags = BSF_GLOBAL;
4710 /* PE DLLs sometimes have zeroed out symbols for some
4711 reason. Just ignore them without a warning. */
4712 if (src->u.syment.n_type == 0
4713 && src->u.syment.n_value == 0
4714 && src->u.syment.n_scnum == 0)
4717 case C_EXTDEF: /* external definition */
4718 case C_ULABEL: /* undefined label */
4719 case C_USTATIC: /* undefined static */
4720 #ifndef COFF_WITH_PE
4721 /* C_LINE in regular coff is 0x68. NT has taken over this storage
4722 class to represent a section symbol */
4723 case C_LINE: /* line # reformatted as symbol table entry */
4724 /* NT uses 0x67 for a weak symbol, not C_ALIAS. */
4725 case C_ALIAS: /* duplicate tag */
4727 /* New storage classes for TI COFF */
4728 #if defined(TIC80COFF) || defined(TICOFF)
4729 case C_UEXT: /* Tentative external definition */
4731 case C_EXTLAB: /* External load time label */
4732 case C_HIDDEN: /* ext symbol in dmert public lib */
4734 (*_bfd_error_handler)
4735 (_("%s: Unrecognized storage class %d for %s symbol `%s'"),
4736 bfd_archive_filename (abfd), src->u.syment.n_sclass,
4737 dst->symbol.section->name, dst->symbol.name);
4738 dst->symbol.flags = BSF_DEBUGGING;
4739 dst->symbol.value = (src->u.syment.n_value);
4743 /* BFD_ASSERT(dst->symbol.flags != 0);*/
4747 dst->symbol.udata.i = 0;
4748 dst->lineno = (alent *) NULL;
4749 this_index += (src->u.syment.n_numaux) + 1;
4751 number_of_symbols++;
4752 } /* walk the native symtab */
4753 } /* bfdize the native symtab */
4755 obj_symbols (abfd) = cached_area;
4756 obj_raw_syments (abfd) = native_symbols;
4758 bfd_get_symcount (abfd) = number_of_symbols;
4759 obj_convert (abfd) = table_ptr;
4760 /* Slurp the line tables for each section too */
4766 coff_slurp_line_table (abfd, p);
4771 } /* coff_slurp_symbol_table() */
4773 /* Classify a COFF symbol. A couple of targets have globally visible
4774 symbols which are not class C_EXT, and this handles those. It also
4775 recognizes some special PE cases. */
4777 static enum coff_symbol_classification
4778 coff_classify_symbol (abfd, syment)
4780 struct internal_syment *syment;
4782 /* FIXME: This partially duplicates the switch in
4783 coff_slurp_symbol_table. */
4784 switch (syment->n_sclass)
4793 case C_THUMBEXTFUNC:
4801 if (syment->n_scnum == 0)
4803 if (syment->n_value == 0)
4804 return COFF_SYMBOL_UNDEFINED;
4806 return COFF_SYMBOL_COMMON;
4808 return COFF_SYMBOL_GLOBAL;
4815 if (syment->n_sclass == C_STAT)
4817 if (syment->n_scnum == 0)
4819 /* The Microsoft compiler sometimes generates these if a
4820 small static function is inlined every time it is used.
4821 The function is discarded, but the symbol table entry
4823 return COFF_SYMBOL_LOCAL;
4826 #ifdef STRICT_PE_FORMAT
4827 /* This is correct for Microsoft generated objects, but it
4828 breaks gas generated objects. */
4830 if (syment->n_value == 0)
4833 char buf[SYMNMLEN + 1];
4835 sec = coff_section_from_bfd_index (abfd, syment->n_scnum);
4837 && (strcmp (bfd_get_section_name (abfd, sec),
4838 _bfd_coff_internal_syment_name (abfd, syment, buf))
4840 return COFF_SYMBOL_PE_SECTION;
4844 return COFF_SYMBOL_LOCAL;
4847 if (syment->n_sclass == C_SECTION)
4849 /* In some cases in a DLL generated by the Microsoft linker, the
4850 n_value field will contain garbage. FIXME: This should
4851 probably be handled by the swapping function instead. */
4852 syment->n_value = 0;
4853 if (syment->n_scnum == 0)
4854 return COFF_SYMBOL_UNDEFINED;
4855 return COFF_SYMBOL_PE_SECTION;
4857 #endif /* COFF_WITH_PE */
4859 /* If it is not a global symbol, we presume it is a local symbol. */
4861 if (syment->n_scnum == 0)
4863 char buf[SYMNMLEN + 1];
4865 (*_bfd_error_handler)
4866 (_("warning: %s: local symbol `%s' has no section"),
4867 bfd_archive_filename (abfd),
4868 _bfd_coff_internal_syment_name (abfd, syment, buf));
4871 return COFF_SYMBOL_LOCAL;
4878 Coff relocations are easily transformed into the internal BFD form
4881 Reading a coff relocation table is done in the following stages:
4883 o Read the entire coff relocation table into memory.
4885 o Process each relocation in turn; first swap it from the
4886 external to the internal form.
4888 o Turn the symbol referenced in the relocation's symbol index
4889 into a pointer into the canonical symbol table.
4890 This table is the same as the one returned by a call to
4891 @code{bfd_canonicalize_symtab}. The back end will call that
4892 routine and save the result if a canonicalization hasn't been done.
4894 o The reloc index is turned into a pointer to a howto
4895 structure, in a back end specific way. For instance, the 386
4896 and 960 use the @code{r_type} to directly produce an index
4897 into a howto table vector; the 88k subtracts a number from the
4898 @code{r_type} field and creates an addend field.
4903 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
4905 coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
4906 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
4907 coffsym = (obj_symbols (abfd) \
4908 + (cache_ptr->sym_ptr_ptr - symbols)); \
4910 coffsym = coff_symbol_from (abfd, ptr); \
4911 if (coffsym != (coff_symbol_type *) NULL \
4912 && coffsym->native->u.syment.n_scnum == 0) \
4913 cache_ptr->addend = 0; \
4914 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
4915 && ptr->section != (asection *) NULL) \
4916 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
4918 cache_ptr->addend = 0; \
4923 coff_slurp_reloc_table (abfd, asect, symbols)
4928 RELOC *native_relocs;
4929 arelent *reloc_cache;
4934 if (asect->relocation)
4936 if (asect->reloc_count == 0)
4938 if (asect->flags & SEC_CONSTRUCTOR)
4940 if (!coff_slurp_symbol_table (abfd))
4942 amt = (bfd_size_type) bfd_coff_relsz (abfd) * asect->reloc_count;
4943 native_relocs = (RELOC *) buy_and_read (abfd, asect->rel_filepos, amt);
4944 amt = (bfd_size_type) asect->reloc_count * sizeof (arelent);
4945 reloc_cache = (arelent *) bfd_alloc (abfd, amt);
4947 if (reloc_cache == NULL)
4950 for (idx = 0; idx < asect->reloc_count; idx++)
4952 struct internal_reloc dst;
4953 struct external_reloc *src;
4954 #ifndef RELOC_PROCESSING
4958 cache_ptr = reloc_cache + idx;
4959 src = native_relocs + idx;
4961 coff_swap_reloc_in (abfd, src, &dst);
4963 #ifdef RELOC_PROCESSING
4964 RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
4966 cache_ptr->address = dst.r_vaddr;
4968 if (dst.r_symndx != -1)
4970 if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
4972 (*_bfd_error_handler)
4973 (_("%s: warning: illegal symbol index %ld in relocs"),
4974 bfd_archive_filename (abfd), dst.r_symndx);
4975 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
4980 cache_ptr->sym_ptr_ptr = (symbols
4981 + obj_convert (abfd)[dst.r_symndx]);
4982 ptr = *(cache_ptr->sym_ptr_ptr);
4987 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
4991 /* The symbols definitions that we have read in have been
4992 relocated as if their sections started at 0. But the offsets
4993 refering to the symbols in the raw data have not been
4994 modified, so we have to have a negative addend to compensate.
4996 Note that symbols which used to be common must be left alone */
4998 /* Calculate any reloc addend by looking at the symbol */
4999 CALC_ADDEND (abfd, ptr, dst, cache_ptr);
5001 cache_ptr->address -= asect->vma;
5002 /* !! cache_ptr->section = (asection *) NULL;*/
5004 /* Fill in the cache_ptr->howto field from dst.r_type */
5005 RTYPE2HOWTO (cache_ptr, &dst);
5006 #endif /* RELOC_PROCESSING */
5008 if (cache_ptr->howto == NULL)
5010 (*_bfd_error_handler)
5011 (_("%s: illegal relocation type %d at address 0x%lx"),
5012 bfd_archive_filename (abfd), dst.r_type, (long) dst.r_vaddr);
5013 bfd_set_error (bfd_error_bad_value);
5018 asect->relocation = reloc_cache;
5022 #ifndef coff_rtype_to_howto
5025 /* Get the howto structure for a reloc. This is only used if the file
5026 including this one defines coff_relocate_section to be
5027 _bfd_coff_generic_relocate_section, so it is OK if it does not
5028 always work. It is the responsibility of the including file to
5029 make sure it is reasonable if it is needed. */
5031 static reloc_howto_type *coff_rtype_to_howto
5032 PARAMS ((bfd *, asection *, struct internal_reloc *,
5033 struct coff_link_hash_entry *, struct internal_syment *,
5037 static reloc_howto_type *
5038 coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
5039 bfd *abfd ATTRIBUTE_UNUSED;
5040 asection *sec ATTRIBUTE_UNUSED;
5041 struct internal_reloc *rel;
5042 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED;
5043 struct internal_syment *sym ATTRIBUTE_UNUSED;
5044 bfd_vma *addendp ATTRIBUTE_UNUSED;
5048 RTYPE2HOWTO (&genrel, rel);
5049 return genrel.howto;
5052 #else /* ! defined (RTYPE2HOWTO) */
5054 #define coff_rtype_to_howto NULL
5056 #endif /* ! defined (RTYPE2HOWTO) */
5057 #endif /* ! defined (coff_rtype_to_howto) */
5059 /* This is stupid. This function should be a boolean predicate. */
5061 coff_canonicalize_reloc (abfd, section, relptr, symbols)
5067 arelent *tblptr = section->relocation;
5068 unsigned int count = 0;
5070 if (section->flags & SEC_CONSTRUCTOR)
5072 /* this section has relocs made up by us, they are not in the
5073 file, so take them out of their chain and place them into
5074 the data area provided */
5075 arelent_chain *chain = section->constructor_chain;
5076 for (count = 0; count < section->reloc_count; count++)
5078 *relptr++ = &chain->relent;
5079 chain = chain->next;
5085 if (! coff_slurp_reloc_table (abfd, section, symbols))
5088 tblptr = section->relocation;
5090 for (; count++ < section->reloc_count;)
5091 *relptr++ = tblptr++;
5094 return section->reloc_count;
5099 coff_sym_filepos (abfd)
5102 return obj_sym_filepos (abfd);
5106 #ifndef coff_reloc16_estimate
5107 #define coff_reloc16_estimate dummy_reloc16_estimate
5109 static int dummy_reloc16_estimate
5110 PARAMS ((bfd *, asection *, arelent *, unsigned int,
5111 struct bfd_link_info *));
5114 dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
5115 bfd *abfd ATTRIBUTE_UNUSED;
5116 asection *input_section ATTRIBUTE_UNUSED;
5117 arelent *reloc ATTRIBUTE_UNUSED;
5118 unsigned int shrink ATTRIBUTE_UNUSED;
5119 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
5127 #ifndef coff_reloc16_extra_cases
5129 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
5131 /* This works even if abort is not declared in any header file. */
5133 static void dummy_reloc16_extra_cases
5134 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
5135 bfd_byte *, unsigned int *, unsigned int *));
5138 dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
5140 bfd *abfd ATTRIBUTE_UNUSED;
5141 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
5142 struct bfd_link_order *link_order ATTRIBUTE_UNUSED;
5143 arelent *reloc ATTRIBUTE_UNUSED;
5144 bfd_byte *data ATTRIBUTE_UNUSED;
5145 unsigned int *src_ptr ATTRIBUTE_UNUSED;
5146 unsigned int *dst_ptr ATTRIBUTE_UNUSED;
5152 #ifndef coff_bfd_link_hash_table_free
5153 #define coff_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
5156 /* If coff_relocate_section is defined, we can use the optimized COFF
5157 backend linker. Otherwise we must continue to use the old linker. */
5158 #ifdef coff_relocate_section
5159 #ifndef coff_bfd_link_hash_table_create
5160 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
5162 #ifndef coff_bfd_link_add_symbols
5163 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
5165 #ifndef coff_bfd_final_link
5166 #define coff_bfd_final_link _bfd_coff_final_link
5168 #else /* ! defined (coff_relocate_section) */
5169 #define coff_relocate_section NULL
5170 #ifndef coff_bfd_link_hash_table_create
5171 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
5173 #ifndef coff_bfd_link_add_symbols
5174 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
5176 #define coff_bfd_final_link _bfd_generic_final_link
5177 #endif /* ! defined (coff_relocate_section) */
5179 #define coff_bfd_link_just_syms _bfd_generic_link_just_syms
5180 #define coff_bfd_link_split_section _bfd_generic_link_split_section
5182 #ifndef coff_start_final_link
5183 #define coff_start_final_link NULL
5186 #ifndef coff_adjust_symndx
5187 #define coff_adjust_symndx NULL
5190 #ifndef coff_link_add_one_symbol
5191 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5194 #ifndef coff_link_output_has_begun
5196 static boolean coff_link_output_has_begun
5197 PARAMS ((bfd *, struct coff_final_link_info *));
5200 coff_link_output_has_begun (abfd, info)
5202 struct coff_final_link_info * info ATTRIBUTE_UNUSED;
5204 return abfd->output_has_begun;
5208 #ifndef coff_final_link_postscript
5210 static boolean coff_final_link_postscript
5211 PARAMS ((bfd *, struct coff_final_link_info *));
5214 coff_final_link_postscript (abfd, pfinfo)
5215 bfd * abfd ATTRIBUTE_UNUSED;
5216 struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED;
5222 #ifndef coff_SWAP_aux_in
5223 #define coff_SWAP_aux_in coff_swap_aux_in
5225 #ifndef coff_SWAP_sym_in
5226 #define coff_SWAP_sym_in coff_swap_sym_in
5228 #ifndef coff_SWAP_lineno_in
5229 #define coff_SWAP_lineno_in coff_swap_lineno_in
5231 #ifndef coff_SWAP_aux_out
5232 #define coff_SWAP_aux_out coff_swap_aux_out
5234 #ifndef coff_SWAP_sym_out
5235 #define coff_SWAP_sym_out coff_swap_sym_out
5237 #ifndef coff_SWAP_lineno_out
5238 #define coff_SWAP_lineno_out coff_swap_lineno_out
5240 #ifndef coff_SWAP_reloc_out
5241 #define coff_SWAP_reloc_out coff_swap_reloc_out
5243 #ifndef coff_SWAP_filehdr_out
5244 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5246 #ifndef coff_SWAP_aouthdr_out
5247 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5249 #ifndef coff_SWAP_scnhdr_out
5250 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5252 #ifndef coff_SWAP_reloc_in
5253 #define coff_SWAP_reloc_in coff_swap_reloc_in
5255 #ifndef coff_SWAP_filehdr_in
5256 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5258 #ifndef coff_SWAP_aouthdr_in
5259 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5261 #ifndef coff_SWAP_scnhdr_in
5262 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5265 static const bfd_coff_backend_data bfd_coff_std_swap_table =
5267 coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5268 coff_SWAP_aux_out, coff_SWAP_sym_out,
5269 coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5270 coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5271 coff_SWAP_scnhdr_out,
5272 FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5273 #ifdef COFF_LONG_FILENAMES
5278 #ifdef COFF_LONG_SECTION_NAMES
5283 COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5284 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5289 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5294 coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5295 coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5296 coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5297 coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5298 coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5299 coff_classify_symbol, coff_compute_section_file_positions,
5300 coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5301 coff_adjust_symndx, coff_link_add_one_symbol,
5302 coff_link_output_has_begun, coff_final_link_postscript
5305 #ifndef coff_close_and_cleanup
5306 #define coff_close_and_cleanup _bfd_generic_close_and_cleanup
5309 #ifndef coff_bfd_free_cached_info
5310 #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
5313 #ifndef coff_get_section_contents
5314 #define coff_get_section_contents _bfd_generic_get_section_contents
5317 #ifndef coff_bfd_copy_private_symbol_data
5318 #define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
5321 #ifndef coff_bfd_copy_private_section_data
5322 #define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
5325 #ifndef coff_bfd_copy_private_bfd_data
5326 #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
5329 #ifndef coff_bfd_merge_private_bfd_data
5330 #define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
5333 #ifndef coff_bfd_set_private_flags
5334 #define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
5337 #ifndef coff_bfd_print_private_bfd_data
5338 #define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
5341 #ifndef coff_bfd_is_local_label_name
5342 #define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name
5345 #ifndef coff_read_minisymbols
5346 #define coff_read_minisymbols _bfd_generic_read_minisymbols
5349 #ifndef coff_minisymbol_to_symbol
5350 #define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
5353 /* The reloc lookup routine must be supplied by each individual COFF
5355 #ifndef coff_bfd_reloc_type_lookup
5356 #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5359 #ifndef coff_bfd_get_relocated_section_contents
5360 #define coff_bfd_get_relocated_section_contents \
5361 bfd_generic_get_relocated_section_contents
5364 #ifndef coff_bfd_relax_section
5365 #define coff_bfd_relax_section bfd_generic_relax_section
5368 #ifndef coff_bfd_gc_sections
5369 #define coff_bfd_gc_sections bfd_generic_gc_sections
5372 #ifndef coff_bfd_merge_sections
5373 #define coff_bfd_merge_sections bfd_generic_merge_sections
5376 #ifndef coff_bfd_discard_group
5377 #define coff_bfd_discard_group bfd_generic_discard_group
5380 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5381 const bfd_target VAR = \
5384 bfd_target_coff_flavour, \
5385 BFD_ENDIAN_BIG, /* data byte order is big */ \
5386 BFD_ENDIAN_BIG, /* header byte order is big */ \
5387 /* object flags */ \
5388 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5389 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5390 /* section flags */ \
5391 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5392 UNDER, /* leading symbol underscore */ \
5393 '/', /* ar_pad_char */ \
5394 15, /* ar_max_namelen */ \
5396 /* Data conversion functions. */ \
5397 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5398 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5399 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5401 /* Header conversion functions. */ \
5402 bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
5403 bfd_getb32, bfd_getb_signed_32, bfd_putb32, \
5404 bfd_getb16, bfd_getb_signed_16, bfd_putb16, \
5406 /* bfd_check_format */ \
5407 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5408 _bfd_dummy_target }, \
5409 /* bfd_set_format */ \
5410 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5411 /* bfd_write_contents */ \
5412 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5415 BFD_JUMP_TABLE_GENERIC (coff), \
5416 BFD_JUMP_TABLE_COPY (coff), \
5417 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5418 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5419 BFD_JUMP_TABLE_SYMBOLS (coff), \
5420 BFD_JUMP_TABLE_RELOCS (coff), \
5421 BFD_JUMP_TABLE_WRITE (coff), \
5422 BFD_JUMP_TABLE_LINK (coff), \
5423 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \
5430 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE) \
5431 const bfd_target VAR = \
5434 bfd_target_coff_flavour, \
5435 BFD_ENDIAN_LITTLE, /* data byte order is little */ \
5436 BFD_ENDIAN_LITTLE, /* header byte order is little */ \
5437 /* object flags */ \
5438 (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \
5439 HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \
5440 /* section flags */ \
5441 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
5442 UNDER, /* leading symbol underscore */ \
5443 '/', /* ar_pad_char */ \
5444 15, /* ar_max_namelen */ \
5446 /* Data conversion functions. */ \
5447 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5448 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5449 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5450 /* Header conversion functions. */ \
5451 bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
5452 bfd_getl32, bfd_getl_signed_32, bfd_putl32, \
5453 bfd_getl16, bfd_getl_signed_16, bfd_putl16, \
5454 /* bfd_check_format */ \
5455 { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \
5456 _bfd_dummy_target }, \
5457 /* bfd_set_format */ \
5458 { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \
5459 /* bfd_write_contents */ \
5460 { bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \
5463 BFD_JUMP_TABLE_GENERIC (coff), \
5464 BFD_JUMP_TABLE_COPY (coff), \
5465 BFD_JUMP_TABLE_CORE (_bfd_nocore), \
5466 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), \
5467 BFD_JUMP_TABLE_SYMBOLS (coff), \
5468 BFD_JUMP_TABLE_RELOCS (coff), \
5469 BFD_JUMP_TABLE_WRITE (coff), \
5470 BFD_JUMP_TABLE_LINK (coff), \
5471 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), \