1 /* Support for the generic parts of most COFF variants, for BFD.
2    Copyright (C) 1990-2018 Free Software Foundation, Inc.
3    Written by Cygnus Support.
4 
5    This file is part of BFD, the Binary File Descriptor library.
6 
7    This program is free software; you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation; either version 3 of the License, or
10    (at your option) any later version.
11 
12    This program is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15    GNU General Public License for more details.
16 
17    You should have received a copy of the GNU General Public License
18    along with this program; if not, write to the Free Software
19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20    MA 02110-1301, USA.  */
21 
22 /* Most of this hacked by  Steve Chamberlain,
23 			sac@cygnus.com.  */
24 /*
25 SECTION
26 	coff backends
27 
28 	BFD supports a number of different flavours of coff format.
29 	The major differences between formats are the sizes and
30 	alignments of fields in structures on disk, and the occasional
31 	extra field.
32 
33 	Coff in all its varieties is implemented with a few common
34 	files and a number of implementation specific files. For
35 	example, The 88k bcs coff format is implemented in the file
36 	@file{coff-m88k.c}. This file @code{#include}s
37 	@file{coff/m88k.h} which defines the external structure of the
38 	coff format for the 88k, and @file{coff/internal.h} which
39 	defines the internal structure. @file{coff-m88k.c} also
40 	defines the relocations used by the 88k format
41 	@xref{Relocations}.
42 
43 	The Intel i960 processor version of coff is implemented in
44 	@file{coff-i960.c}. This file has the same structure as
45 	@file{coff-m88k.c}, except that it includes @file{coff/i960.h}
46 	rather than @file{coff-m88k.h}.
47 
48 SUBSECTION
49 	Porting to a new version of coff
50 
51 	The recommended method is to select from the existing
52 	implementations the version of coff which is most like the one
53 	you want to use.  For example, we'll say that i386 coff is
54 	the one you select, and that your coff flavour is called foo.
55 	Copy @file{i386coff.c} to @file{foocoff.c}, copy
56 	@file{../include/coff/i386.h} to @file{../include/coff/foo.h},
57 	and add the lines to @file{targets.c} and @file{Makefile.in}
58 	so that your new back end is used. Alter the shapes of the
59 	structures in @file{../include/coff/foo.h} so that they match
60 	what you need. You will probably also have to add
61 	@code{#ifdef}s to the code in @file{coff/internal.h} and
62 	@file{coffcode.h} if your version of coff is too wild.
63 
64 	You can verify that your new BFD backend works quite simply by
65 	building @file{objdump} from the @file{binutils} directory,
66 	and making sure that its version of what's going on and your
67 	host system's idea (assuming it has the pretty standard coff
68 	dump utility, usually called @code{att-dump} or just
69 	@code{dump}) are the same.  Then clean up your code, and send
70 	what you've done to Cygnus. Then your stuff will be in the
71 	next release, and you won't have to keep integrating it.
72 
73 SUBSECTION
74 	How the coff backend works
75 
76 SUBSUBSECTION
77 	File layout
78 
79 	The Coff backend is split into generic routines that are
80 	applicable to any Coff target and routines that are specific
81 	to a particular target.  The target-specific routines are
82 	further split into ones which are basically the same for all
83 	Coff targets except that they use the external symbol format
84 	or use different values for certain constants.
85 
86 	The generic routines are in @file{coffgen.c}.  These routines
87 	work for any Coff target.  They use some hooks into the target
88 	specific code; the hooks are in a @code{bfd_coff_backend_data}
89 	structure, one of which exists for each target.
90 
91 	The essentially similar target-specific routines are in
92 	@file{coffcode.h}.  This header file includes executable C code.
93 	The various Coff targets first include the appropriate Coff
94 	header file, make any special defines that are needed, and
95 	then include @file{coffcode.h}.
96 
97 	Some of the Coff targets then also have additional routines in
98 	the target source file itself.
99 
100 	For example, @file{coff-i960.c} includes
101 	@file{coff/internal.h} and @file{coff/i960.h}.  It then
102 	defines a few constants, such as @code{I960}, and includes
103 	@file{coffcode.h}.  Since the i960 has complex relocation
104 	types, @file{coff-i960.c} also includes some code to
105 	manipulate the i960 relocs.  This code is not in
106 	@file{coffcode.h} because it would not be used by any other
107 	target.
108 
109 SUBSUBSECTION
110 	Coff long section names
111 
112 	In the standard Coff object format, section names are limited to
113 	the eight bytes available in the @code{s_name} field of the
114 	@code{SCNHDR} section header structure.  The format requires the
115 	field to be NUL-padded, but not necessarily NUL-terminated, so
116 	the longest section names permitted are a full eight characters.
117 
118 	The Microsoft PE variants of the Coff object file format add
119 	an extension to support the use of long section names.  This
120 	extension is defined in section 4 of the Microsoft PE/COFF
121 	specification (rev 8.1).  If a section name is too long to fit
122 	into the section header's @code{s_name} field, it is instead
123 	placed into the string table, and the @code{s_name} field is
124 	filled with a slash ("/") followed by the ASCII decimal
125 	representation of the offset of the full name relative to the
126 	string table base.
127 
128 	Note that this implies that the extension can only be used in object
129 	files, as executables do not contain a string table.  The standard
130 	specifies that long section names from objects emitted into executable
131 	images are to be truncated.
132 
133 	However, as a GNU extension, BFD can generate executable images
134 	that contain a string table and long section names.  This
135 	would appear to be technically valid, as the standard only says
136 	that Coff debugging information is deprecated, not forbidden,
137 	and in practice it works, although some tools that parse PE files
138 	expecting the MS standard format may become confused; @file{PEview} is
139 	one known example.
140 
141 	The functionality is supported in BFD by code implemented under
142 	the control of the macro @code{COFF_LONG_SECTION_NAMES}.  If not
143 	defined, the format does not support long section names in any way.
144 	If defined, it is used to initialise a flag,
145 	@code{_bfd_coff_long_section_names}, and a hook function pointer,
146 	@code{_bfd_coff_set_long_section_names}, in the Coff backend data
147 	structure.  The flag controls the generation of long section names
148 	in output BFDs at runtime; if it is false, as it will be by default
149 	when generating an executable image, long section names are truncated;
150 	if true, the long section names extension is employed.  The hook
151 	points to a function that allows the value of the flag to be altered
152 	at runtime, on formats that support long section names at all; on
153 	other formats it points to a stub that returns an error indication.
154 
155 	With input BFDs, the flag is set according to whether any long section
156 	names are detected while reading the section headers.  For a completely
157 	new BFD, the flag is set to the default for the target format.  This
158 	information can be used by a client of the BFD library when deciding
159 	what output format to generate, and means that a BFD that is opened
160 	for read and subsequently converted to a writeable BFD and modified
161 	in-place will retain whatever format it had on input.
162 
163 	If @code{COFF_LONG_SECTION_NAMES} is simply defined (blank), or is
164 	defined to the value "1", then long section names are enabled by
165 	default; if it is defined to the value zero, they are disabled by
166 	default (but still accepted in input BFDs).  The header @file{coffcode.h}
167 	defines a macro, @code{COFF_DEFAULT_LONG_SECTION_NAMES}, which is
168 	used in the backends to initialise the backend data structure fields
169 	appropriately; see the comments for further detail.
170 
171 SUBSUBSECTION
172 	Bit twiddling
173 
174 	Each flavour of coff supported in BFD has its own header file
175 	describing the external layout of the structures. There is also
176 	an internal description of the coff layout, in
177 	@file{coff/internal.h}. A major function of the
178 	coff backend is swapping the bytes and twiddling the bits to
179 	translate the external form of the structures into the normal
180 	internal form. This is all performed in the
181 	@code{bfd_swap}_@i{thing}_@i{direction} routines. Some
182 	elements are different sizes between different versions of
183 	coff; it is the duty of the coff version specific include file
184 	to override the definitions of various packing routines in
185 	@file{coffcode.h}. E.g., the size of line number entry in coff is
186 	sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
187 	@code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
188 	correct one. No doubt, some day someone will find a version of
189 	coff which has a varying field size not catered to at the
190 	moment. To port BFD, that person will have to add more @code{#defines}.
191 	Three of the bit twiddling routines are exported to
192 	@code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
193 	and @code{coff_swap_lineno_in}. @code{GDB} reads the symbol
194 	table on its own, but uses BFD to fix things up.  More of the
195 	bit twiddlers are exported for @code{gas};
196 	@code{coff_swap_aux_out}, @code{coff_swap_sym_out},
197 	@code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
198 	@code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
199 	@code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
200 	of all the symbol table and reloc drudgery itself, thereby
201 	saving the internal BFD overhead, but uses BFD to swap things
202 	on the way out, making cross ports much safer.  Doing so also
203 	allows BFD (and thus the linker) to use the same header files
204 	as @code{gas}, which makes one avenue to disaster disappear.
205 
206 SUBSUBSECTION
207 	Symbol reading
208 
209 	The simple canonical form for symbols used by BFD is not rich
210 	enough to keep all the information available in a coff symbol
211 	table. The back end gets around this problem by keeping the original
212 	symbol table around, "behind the scenes".
213 
214 	When a symbol table is requested (through a call to
215 	@code{bfd_canonicalize_symtab}), a request gets through to
216 	@code{coff_get_normalized_symtab}. This reads the symbol table from
217 	the coff file and swaps all the structures inside into the
218 	internal form. It also fixes up all the pointers in the table
219 	(represented in the file by offsets from the first symbol in
220 	the table) into physical pointers to elements in the new
221 	internal table. This involves some work since the meanings of
222 	fields change depending upon context: a field that is a
223 	pointer to another structure in the symbol table at one moment
224 	may be the size in bytes of a structure at the next.  Another
225 	pass is made over the table. All symbols which mark file names
226 	(<<C_FILE>> symbols) are modified so that the internal
227 	string points to the value in the auxent (the real filename)
228 	rather than the normal text associated with the symbol
229 	(@code{".file"}).
230 
231 	At this time the symbol names are moved around. Coff stores
232 	all symbols less than nine characters long physically
233 	within the symbol table; longer strings are kept at the end of
234 	the file in the string table. This pass moves all strings
235 	into memory and replaces them with pointers to the strings.
236 
237 	The symbol table is massaged once again, this time to create
238 	the canonical table used by the BFD application. Each symbol
239 	is inspected in turn, and a decision made (using the
240 	@code{sclass} field) about the various flags to set in the
241 	@code{asymbol}.  @xref{Symbols}. The generated canonical table
242 	shares strings with the hidden internal symbol table.
243 
244 	Any linenumbers are read from the coff file too, and attached
245 	to the symbols which own the functions the linenumbers belong to.
246 
247 SUBSUBSECTION
248 	Symbol writing
249 
250 	Writing a symbol to a coff file which didn't come from a coff
251 	file will lose any debugging information. The @code{asymbol}
252 	structure remembers the BFD from which the symbol was taken, and on
253 	output the back end makes sure that the same destination target as
254 	source target is present.
255 
256 	When the symbols have come from a coff file then all the
257 	debugging information is preserved.
258 
259 	Symbol tables are provided for writing to the back end in a
260 	vector of pointers to pointers. This allows applications like
261 	the linker to accumulate and output large symbol tables
262 	without having to do too much byte copying.
263 
264 	This function runs through the provided symbol table and
265 	patches each symbol marked as a file place holder
266 	(@code{C_FILE}) to point to the next file place holder in the
267 	list. It also marks each @code{offset} field in the list with
268 	the offset from the first symbol of the current symbol.
269 
270 	Another function of this procedure is to turn the canonical
271 	value form of BFD into the form used by coff. Internally, BFD
272 	expects symbol values to be offsets from a section base; so a
273 	symbol physically at 0x120, but in a section starting at
274 	0x100, would have the value 0x20. Coff expects symbols to
275 	contain their final value, so symbols have their values
276 	changed at this point to reflect their sum with their owning
277 	section.  This transformation uses the
278 	<<output_section>> field of the @code{asymbol}'s
279 	@code{asection} @xref{Sections}.
280 
281 	o <<coff_mangle_symbols>>
282 
283 	This routine runs though the provided symbol table and uses
284 	the offsets generated by the previous pass and the pointers
285 	generated when the symbol table was read in to create the
286 	structured hierarchy required by coff. It changes each pointer
287 	to a symbol into the index into the symbol table of the asymbol.
288 
289 	o <<coff_write_symbols>>
290 
291 	This routine runs through the symbol table and patches up the
292 	symbols from their internal form into the coff way, calls the
293 	bit twiddlers, and writes out the table to the file.
294 
295 */
296 
297 /*
298 INTERNAL_DEFINITION
299 	coff_symbol_type
300 
301 DESCRIPTION
302 	The hidden information for an <<asymbol>> is described in a
303 	<<combined_entry_type>>:
304 
305 CODE_FRAGMENT
306 .
307 .typedef struct coff_ptr_struct
308 .{
309 .  {* Remembers the offset from the first symbol in the file for
310 .     this symbol. Generated by coff_renumber_symbols.  *}
311 .  unsigned int offset;
312 .
313 .  {* Should the value of this symbol be renumbered.  Used for
314 .     XCOFF C_BSTAT symbols.  Set by coff_slurp_symbol_table.  *}
315 .  unsigned int fix_value : 1;
316 .
317 .  {* Should the tag field of this symbol be renumbered.
318 .     Created by coff_pointerize_aux.  *}
319 .  unsigned int fix_tag : 1;
320 .
321 .  {* Should the endidx field of this symbol be renumbered.
322 .     Created by coff_pointerize_aux.  *}
323 .  unsigned int fix_end : 1;
324 .
325 .  {* Should the x_csect.x_scnlen field be renumbered.
326 .     Created by coff_pointerize_aux.  *}
327 .  unsigned int fix_scnlen : 1;
328 .
329 .  {* Fix up an XCOFF C_BINCL/C_EINCL symbol.  The value is the
330 .     index into the line number entries.  Set by coff_slurp_symbol_table.  *}
331 .  unsigned int fix_line : 1;
332 .
333 .  {* The container for the symbol structure as read and translated
334 .     from the file.  *}
335 .  union
336 .  {
337 .    union internal_auxent auxent;
338 .    struct internal_syment syment;
339 .  } u;
340 .
341 . {* Selector for the union above.  *}
342 . bfd_boolean is_sym;
343 .} combined_entry_type;
344 .
345 .
346 .{* Each canonical asymbol really looks like this: *}
347 .
348 .typedef struct coff_symbol_struct
349 .{
350 .  {* The actual symbol which the rest of BFD works with *}
351 .  asymbol symbol;
352 .
353 .  {* A pointer to the hidden information for this symbol *}
354 .  combined_entry_type *native;
355 .
356 .  {* A pointer to the linenumber information for this symbol *}
357 .  struct lineno_cache_entry *lineno;
358 .
359 .  {* Have the line numbers been relocated yet ? *}
360 .  bfd_boolean done_lineno;
361 .} coff_symbol_type;
362 
363 */
364 
365 #include "libiberty.h"
366 
367 #ifdef COFF_WITH_PE
368 #include "peicode.h"
369 #else
370 #include "coffswap.h"
371 #endif
372 
373 #define STRING_SIZE_SIZE 4
374 
375 #define DOT_DEBUG	".debug"
376 #define DOT_ZDEBUG	".zdebug"
377 #define GNU_LINKONCE_WI ".gnu.linkonce.wi."
378 #define GNU_LINKONCE_WT ".gnu.linkonce.wt."
379 #define DOT_RELOC	".reloc"
380 
381 #if defined (COFF_LONG_SECTION_NAMES)
382 /* Needed to expand the inputs to BLANKOR1TOODD.  */
383 #define COFFLONGSECTIONCATHELPER(x,y)    x ## y
384 /* If the input macro Y is blank or '1', return an odd number; if it is
385    '0', return an even number.  Result undefined in all other cases.  */
386 #define BLANKOR1TOODD(y)		 COFFLONGSECTIONCATHELPER(1,y)
387 /* Defined to numerical 0 or 1 according to whether generation of long
388    section names is disabled or enabled by default.  */
389 #define COFF_ENABLE_LONG_SECTION_NAMES   (BLANKOR1TOODD(COFF_LONG_SECTION_NAMES) & 1)
390 /* Where long section names are supported, we allow them to be enabled
391    and disabled at runtime, so select an appropriate hook function for
392    _bfd_coff_set_long_section_names.  */
393 #define COFF_LONG_SECTION_NAMES_SETTER   bfd_coff_set_long_section_names_allowed
394 #else /* !defined (COFF_LONG_SECTION_NAMES) */
395 /* If long section names are not supported, this stub disallows any
396    attempt to enable them at run-time.  */
397 #define COFF_LONG_SECTION_NAMES_SETTER   bfd_coff_set_long_section_names_disallowed
398 #endif /* defined (COFF_LONG_SECTION_NAMES) */
399 
400 /* Define a macro that can be used to initialise both the fields relating
401    to long section names in the backend data struct simultaneously.  */
402 #if COFF_ENABLE_LONG_SECTION_NAMES
403 #define COFF_DEFAULT_LONG_SECTION_NAMES  (TRUE), COFF_LONG_SECTION_NAMES_SETTER
404 #else /* !COFF_ENABLE_LONG_SECTION_NAMES */
405 #define COFF_DEFAULT_LONG_SECTION_NAMES  (FALSE), COFF_LONG_SECTION_NAMES_SETTER
406 #endif /* COFF_ENABLE_LONG_SECTION_NAMES */
407 
408 #if defined (COFF_LONG_SECTION_NAMES)
409 static bfd_boolean bfd_coff_set_long_section_names_allowed
410   (bfd *, int);
411 #else /* !defined (COFF_LONG_SECTION_NAMES) */
412 static bfd_boolean bfd_coff_set_long_section_names_disallowed
413   (bfd *, int);
414 #endif /* defined (COFF_LONG_SECTION_NAMES) */
415 static long sec_to_styp_flags
416   (const char *, flagword);
417 static bfd_boolean styp_to_sec_flags
418   (bfd *, void *, const char *, asection *, flagword *);
419 static bfd_boolean coff_bad_format_hook
420   (bfd *, void *);
421 static void coff_set_custom_section_alignment
422   (bfd *, asection *, const struct coff_section_alignment_entry *,
423    const unsigned int);
424 static bfd_boolean coff_new_section_hook
425   (bfd *, asection *);
426 static bfd_boolean coff_set_arch_mach_hook
427   (bfd *, void *);
428 static bfd_boolean coff_write_relocs
429   (bfd *, int);
430 static bfd_boolean coff_set_flags
431   (bfd *, unsigned int *, unsigned short *);
432 static bfd_boolean coff_set_arch_mach
433   (bfd *, enum bfd_architecture, unsigned long) ATTRIBUTE_UNUSED;
434 static bfd_boolean coff_compute_section_file_positions
435   (bfd *);
436 static bfd_boolean coff_write_object_contents
437   (bfd *) ATTRIBUTE_UNUSED;
438 static bfd_boolean coff_set_section_contents
439   (bfd *, asection *, const void *, file_ptr, bfd_size_type);
440 static void * buy_and_read
441   (bfd *, file_ptr, bfd_size_type);
442 static bfd_boolean coff_slurp_line_table
443   (bfd *, asection *);
444 static bfd_boolean coff_slurp_symbol_table
445   (bfd *);
446 static enum coff_symbol_classification coff_classify_symbol
447   (bfd *, struct internal_syment *);
448 static bfd_boolean coff_slurp_reloc_table
449   (bfd *, asection *, asymbol **);
450 static long coff_canonicalize_reloc
451   (bfd *, asection *, arelent **, asymbol **);
452 #ifndef coff_mkobject_hook
453 static void * coff_mkobject_hook
454   (bfd *, void *,  void *);
455 #endif
456 #ifdef COFF_WITH_PE
457 static flagword handle_COMDAT
458   (bfd *, flagword, void *, const char *, asection *);
459 #endif
460 #ifdef COFF_IMAGE_WITH_PE
461 static bfd_boolean coff_read_word
462   (bfd *, unsigned int *);
463 static unsigned int coff_compute_checksum
464   (bfd *);
465 static bfd_boolean coff_apply_checksum
466   (bfd *);
467 #endif
468 #ifdef TICOFF
469 static bfd_boolean ticoff0_bad_format_hook
470   (bfd *, void * );
471 static bfd_boolean ticoff1_bad_format_hook
472   (bfd *, void * );
473 #endif
474 
475 /* void warning(); */
476 
477 #if defined (COFF_LONG_SECTION_NAMES)
478 static bfd_boolean
bfd_coff_set_long_section_names_allowed(bfd * abfd,int enable)479 bfd_coff_set_long_section_names_allowed (bfd *abfd, int enable)
480 {
481   coff_backend_info (abfd)->_bfd_coff_long_section_names = enable;
482   return TRUE;
483 }
484 #else /* !defined (COFF_LONG_SECTION_NAMES) */
485 static bfd_boolean
bfd_coff_set_long_section_names_disallowed(bfd * abfd,int enable)486 bfd_coff_set_long_section_names_disallowed (bfd *abfd, int enable)
487 {
488   (void) abfd;
489   (void) enable;
490   return FALSE;
491 }
492 #endif /* defined (COFF_LONG_SECTION_NAMES) */
493 
494 /* Return a word with STYP_* (scnhdr.s_flags) flags set to represent
495    the incoming SEC_* flags.  The inverse of this function is
496    styp_to_sec_flags().  NOTE: If you add to/change this routine, you
497    should probably mirror the changes in styp_to_sec_flags().  */
498 
499 #ifndef COFF_WITH_PE
500 
501 /* Macros for setting debugging flags.  */
502 
503 #ifdef STYP_DEBUG
504 #define STYP_XCOFF_DEBUG STYP_DEBUG
505 #else
506 #define STYP_XCOFF_DEBUG STYP_INFO
507 #endif
508 
509 #ifdef COFF_ALIGN_IN_S_FLAGS
510 #define STYP_DEBUG_INFO STYP_DSECT
511 #else
512 #define STYP_DEBUG_INFO STYP_INFO
513 #endif
514 
515 static long
sec_to_styp_flags(const char * sec_name,flagword sec_flags)516 sec_to_styp_flags (const char *sec_name, flagword sec_flags)
517 {
518   long styp_flags = 0;
519 
520   if (!strcmp (sec_name, _TEXT))
521     {
522       styp_flags = STYP_TEXT;
523     }
524   else if (!strcmp (sec_name, _DATA))
525     {
526       styp_flags = STYP_DATA;
527     }
528   else if (!strcmp (sec_name, _BSS))
529     {
530       styp_flags = STYP_BSS;
531 #ifdef _COMMENT
532     }
533   else if (!strcmp (sec_name, _COMMENT))
534     {
535       styp_flags = STYP_INFO;
536 #endif /* _COMMENT */
537 #ifdef _LIB
538     }
539   else if (!strcmp (sec_name, _LIB))
540     {
541       styp_flags = STYP_LIB;
542 #endif /* _LIB */
543 #ifdef _LIT
544     }
545   else if (!strcmp (sec_name, _LIT))
546     {
547       styp_flags = STYP_LIT;
548 #endif /* _LIT */
549     }
550   else if (CONST_STRNEQ (sec_name, DOT_DEBUG)
551 	   || CONST_STRNEQ (sec_name, DOT_ZDEBUG))
552     {
553       /* Handle the XCOFF debug section and DWARF2 debug sections.  */
554       if (!sec_name[6])
555 	styp_flags = STYP_XCOFF_DEBUG;
556       else
557 	styp_flags = STYP_DEBUG_INFO;
558     }
559   else if (CONST_STRNEQ (sec_name, ".stab"))
560     {
561       styp_flags = STYP_DEBUG_INFO;
562     }
563 #ifdef COFF_LONG_SECTION_NAMES
564   else if (CONST_STRNEQ (sec_name, GNU_LINKONCE_WI)
565 	   || CONST_STRNEQ (sec_name, GNU_LINKONCE_WT))
566     {
567       styp_flags = STYP_DEBUG_INFO;
568     }
569 #endif
570 #ifdef RS6000COFF_C
571   else if (!strcmp (sec_name, _PAD))
572     {
573       styp_flags = STYP_PAD;
574     }
575   else if (!strcmp (sec_name, _LOADER))
576     {
577       styp_flags = STYP_LOADER;
578     }
579   else if (!strcmp (sec_name, _EXCEPT))
580     {
581       styp_flags = STYP_EXCEPT;
582     }
583   else if (!strcmp (sec_name, _TYPCHK))
584     {
585       styp_flags = STYP_TYPCHK;
586     }
587   else if (sec_flags & SEC_DEBUGGING)
588     {
589       int i;
590 
591       for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++)
592 	if (!strcmp (sec_name, xcoff_dwsect_names[i].name))
593 	  {
594 	    styp_flags = STYP_DWARF | xcoff_dwsect_names[i].flag;
595 	    break;
596 	  }
597     }
598 #endif
599   /* Try and figure out what it should be */
600   else if (sec_flags & SEC_CODE)
601     {
602       styp_flags = STYP_TEXT;
603     }
604   else if (sec_flags & SEC_DATA)
605     {
606       styp_flags = STYP_DATA;
607     }
608   else if (sec_flags & SEC_READONLY)
609     {
610 #ifdef STYP_LIT			/* 29k readonly text/data section */
611       styp_flags = STYP_LIT;
612 #else
613       styp_flags = STYP_TEXT;
614 #endif /* STYP_LIT */
615     }
616   else if (sec_flags & SEC_LOAD)
617     {
618       styp_flags = STYP_TEXT;
619     }
620   else if (sec_flags & SEC_ALLOC)
621     {
622       styp_flags = STYP_BSS;
623     }
624 
625 #ifdef STYP_CLINK
626   if (sec_flags & SEC_TIC54X_CLINK)
627     styp_flags |= STYP_CLINK;
628 #endif
629 
630 #ifdef STYP_BLOCK
631   if (sec_flags & SEC_TIC54X_BLOCK)
632     styp_flags |= STYP_BLOCK;
633 #endif
634 
635 #ifdef STYP_NOLOAD
636   if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
637     styp_flags |= STYP_NOLOAD;
638 #endif
639 
640   return styp_flags;
641 }
642 
643 #else /* COFF_WITH_PE */
644 
645 /* The PE version; see above for the general comments.  The non-PE
646    case seems to be more guessing, and breaks PE format; specifically,
647    .rdata is readonly, but it sure ain't text.  Really, all this
648    should be set up properly in gas (or whatever assembler is in use),
649    and honor whatever objcopy/strip, etc. sent us as input.  */
650 
651 static long
sec_to_styp_flags(const char * sec_name,flagword sec_flags)652 sec_to_styp_flags (const char *sec_name, flagword sec_flags)
653 {
654   long styp_flags = 0;
655   bfd_boolean is_dbg = FALSE;
656 
657   if (CONST_STRNEQ (sec_name, DOT_DEBUG)
658       || CONST_STRNEQ (sec_name, DOT_ZDEBUG)
659 #ifdef COFF_LONG_SECTION_NAMES
660       || CONST_STRNEQ (sec_name, GNU_LINKONCE_WI)
661       || CONST_STRNEQ (sec_name, GNU_LINKONCE_WT)
662 #endif
663       || CONST_STRNEQ (sec_name, ".stab"))
664     is_dbg = TRUE;
665 
666   /* caution: there are at least three groups of symbols that have
667      very similar bits and meanings: IMAGE_SCN*, SEC_*, and STYP_*.
668      SEC_* are the BFD internal flags, used for generic BFD
669      information.  STYP_* are the COFF section flags which appear in
670      COFF files.  IMAGE_SCN_* are the PE section flags which appear in
671      PE files.  The STYP_* flags and the IMAGE_SCN_* flags overlap,
672      but there are more IMAGE_SCN_* flags.  */
673 
674   /* FIXME: There is no gas syntax to specify the debug section flag.  */
675   if (is_dbg)
676     {
677       sec_flags &= (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD
678 		    | SEC_LINK_DUPLICATES_SAME_CONTENTS
679 		    | SEC_LINK_DUPLICATES_SAME_SIZE);
680       sec_flags |= SEC_DEBUGGING | SEC_READONLY;
681     }
682 
683   /* skip LOAD */
684   /* READONLY later */
685   /* skip RELOC */
686   if ((sec_flags & SEC_CODE) != 0)
687     styp_flags |= IMAGE_SCN_CNT_CODE;
688   if ((sec_flags & (SEC_DATA | SEC_DEBUGGING)) != 0)
689     styp_flags |= IMAGE_SCN_CNT_INITIALIZED_DATA;
690   if ((sec_flags & SEC_ALLOC) != 0 && (sec_flags & SEC_LOAD) == 0)
691     styp_flags |= IMAGE_SCN_CNT_UNINITIALIZED_DATA;  /* ==STYP_BSS */
692   /* skip ROM */
693   /* skip constRUCTOR */
694   /* skip CONTENTS */
695   if ((sec_flags & SEC_IS_COMMON) != 0)
696     styp_flags |= IMAGE_SCN_LNK_COMDAT;
697   if ((sec_flags & SEC_DEBUGGING) != 0)
698     styp_flags |= IMAGE_SCN_MEM_DISCARDABLE;
699   if ((sec_flags & SEC_EXCLUDE) != 0 && !is_dbg)
700     styp_flags |= IMAGE_SCN_LNK_REMOVE;
701   if ((sec_flags & SEC_NEVER_LOAD) != 0 && !is_dbg)
702     styp_flags |= IMAGE_SCN_LNK_REMOVE;
703   /* skip IN_MEMORY */
704   /* skip SORT */
705   if (sec_flags & SEC_LINK_ONCE)
706     styp_flags |= IMAGE_SCN_LNK_COMDAT;
707   if ((sec_flags
708        & (SEC_LINK_DUPLICATES_DISCARD | SEC_LINK_DUPLICATES_SAME_CONTENTS
709 	  | SEC_LINK_DUPLICATES_SAME_SIZE)) != 0)
710     styp_flags |= IMAGE_SCN_LNK_COMDAT;
711 
712   /* skip LINKER_CREATED */
713 
714   if ((sec_flags & SEC_COFF_NOREAD) == 0)
715     styp_flags |= IMAGE_SCN_MEM_READ;     /* Invert NOREAD for read.  */
716   if ((sec_flags & SEC_READONLY) == 0)
717     styp_flags |= IMAGE_SCN_MEM_WRITE;    /* Invert READONLY for write.  */
718   if (sec_flags & SEC_CODE)
719     styp_flags |= IMAGE_SCN_MEM_EXECUTE;  /* CODE->EXECUTE.  */
720   if (sec_flags & SEC_COFF_SHARED)
721     styp_flags |= IMAGE_SCN_MEM_SHARED;   /* Shared remains meaningful.  */
722 
723   return styp_flags;
724 }
725 
726 #endif /* COFF_WITH_PE */
727 
728 /* Return a word with SEC_* flags set to represent the incoming STYP_*
729    flags (from scnhdr.s_flags).  The inverse of this function is
730    sec_to_styp_flags().  NOTE: If you add to/change this routine, you
731    should probably mirror the changes in sec_to_styp_flags().  */
732 
733 #ifndef COFF_WITH_PE
734 
735 static bfd_boolean
styp_to_sec_flags(bfd * abfd ATTRIBUTE_UNUSED,void * hdr,const char * name,asection * section ATTRIBUTE_UNUSED,flagword * flags_ptr)736 styp_to_sec_flags (bfd *abfd ATTRIBUTE_UNUSED,
737 		   void * hdr,
738 		   const char *name,
739 		   asection *section ATTRIBUTE_UNUSED,
740 		   flagword *flags_ptr)
741 {
742   struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
743   long styp_flags = internal_s->s_flags;
744   flagword sec_flags = 0;
745 
746 #ifdef STYP_BLOCK
747   if (styp_flags & STYP_BLOCK)
748     sec_flags |= SEC_TIC54X_BLOCK;
749 #endif
750 
751 #ifdef STYP_CLINK
752   if (styp_flags & STYP_CLINK)
753     sec_flags |= SEC_TIC54X_CLINK;
754 #endif
755 
756 #ifdef STYP_NOLOAD
757   if (styp_flags & STYP_NOLOAD)
758     sec_flags |= SEC_NEVER_LOAD;
759 #endif /* STYP_NOLOAD */
760 
761   /* For 386 COFF, at least, an unloadable text or data section is
762      actually a shared library section.  */
763   if (styp_flags & STYP_TEXT)
764     {
765       if (sec_flags & SEC_NEVER_LOAD)
766 	sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
767       else
768 	sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
769     }
770   else if (styp_flags & STYP_DATA)
771     {
772       if (sec_flags & SEC_NEVER_LOAD)
773 	sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
774       else
775 	sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
776     }
777   else if (styp_flags & STYP_BSS)
778     {
779 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
780       if (sec_flags & SEC_NEVER_LOAD)
781 	sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
782       else
783 #endif
784 	sec_flags |= SEC_ALLOC;
785     }
786   else if (styp_flags & STYP_INFO)
787     {
788       /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
789 	 defined.  coff_compute_section_file_positions uses
790 	 COFF_PAGE_SIZE to ensure that the low order bits of the
791 	 section VMA and the file offset match.  If we don't know
792 	 COFF_PAGE_SIZE, we can't ensure the correct correspondence,
793 	 and demand page loading of the file will fail.  */
794 #if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS)
795       sec_flags |= SEC_DEBUGGING;
796 #endif
797     }
798   else if (styp_flags & STYP_PAD)
799     sec_flags = 0;
800 #ifdef RS6000COFF_C
801   else if (styp_flags & STYP_EXCEPT)
802     sec_flags |= SEC_LOAD;
803   else if (styp_flags & STYP_LOADER)
804     sec_flags |= SEC_LOAD;
805   else if (styp_flags & STYP_TYPCHK)
806     sec_flags |= SEC_LOAD;
807   else if (styp_flags & STYP_DWARF)
808     sec_flags |= SEC_DEBUGGING;
809 #endif
810   else if (strcmp (name, _TEXT) == 0)
811     {
812       if (sec_flags & SEC_NEVER_LOAD)
813 	sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
814       else
815 	sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
816     }
817   else if (strcmp (name, _DATA) == 0)
818     {
819       if (sec_flags & SEC_NEVER_LOAD)
820 	sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
821       else
822 	sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
823     }
824   else if (strcmp (name, _BSS) == 0)
825     {
826 #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
827       if (sec_flags & SEC_NEVER_LOAD)
828 	sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
829       else
830 #endif
831 	sec_flags |= SEC_ALLOC;
832     }
833   else if (CONST_STRNEQ (name, DOT_DEBUG)
834 	   || CONST_STRNEQ (name, DOT_ZDEBUG)
835 #ifdef _COMMENT
836 	   || strcmp (name, _COMMENT) == 0
837 #endif
838 #ifdef COFF_LONG_SECTION_NAMES
839 	   || CONST_STRNEQ (name, GNU_LINKONCE_WI)
840 	   || CONST_STRNEQ (name, GNU_LINKONCE_WT)
841 #endif
842 	   || CONST_STRNEQ (name, ".stab"))
843     {
844 #ifdef COFF_PAGE_SIZE
845       sec_flags |= SEC_DEBUGGING;
846 #endif
847     }
848 #ifdef _LIB
849   else if (strcmp (name, _LIB) == 0)
850     ;
851 #endif
852 #ifdef _LIT
853   else if (strcmp (name, _LIT) == 0)
854     sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY;
855 #endif
856   else
857     sec_flags |= SEC_ALLOC | SEC_LOAD;
858 
859 #ifdef STYP_LIT			/* A29k readonly text/data section type.  */
860   if ((styp_flags & STYP_LIT) == STYP_LIT)
861     sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
862 #endif /* STYP_LIT */
863 
864 #ifdef STYP_OTHER_LOAD		/* Other loaded sections.  */
865   if (styp_flags & STYP_OTHER_LOAD)
866     sec_flags = (SEC_LOAD | SEC_ALLOC);
867 #endif /* STYP_SDATA */
868 
869 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
870   /* As a GNU extension, if the name begins with .gnu.linkonce, we
871      only link a single copy of the section.  This is used to support
872      g++.  g++ will emit each template expansion in its own section.
873      The symbols will be defined as weak, so that multiple definitions
874      are permitted.  The GNU linker extension is to actually discard
875      all but one of the sections.  */
876   if (CONST_STRNEQ (name, ".gnu.linkonce"))
877     sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
878 #endif
879 
880   if (flags_ptr == NULL)
881     return FALSE;
882 
883   * flags_ptr = sec_flags;
884   return TRUE;
885 }
886 
887 #else /* COFF_WITH_PE */
888 
889 static flagword
handle_COMDAT(bfd * abfd,flagword sec_flags,void * hdr,const char * name,asection * section)890 handle_COMDAT (bfd * abfd,
891 	       flagword sec_flags,
892 	       void * hdr,
893 	       const char *name,
894 	       asection *section)
895 {
896   struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
897   bfd_byte *esymstart, *esym, *esymend;
898   int seen_state = 0;
899   char *target_name = NULL;
900 
901   sec_flags |= SEC_LINK_ONCE;
902 
903   /* Unfortunately, the PE format stores essential information in
904      the symbol table, of all places.  We need to extract that
905      information now, so that objdump and the linker will know how
906      to handle the section without worrying about the symbols.  We
907      can't call slurp_symtab, because the linker doesn't want the
908      swapped symbols.  */
909 
910   /* COMDAT sections are special.  The first symbol is the section
911      symbol, which tells what kind of COMDAT section it is.  The
912      second symbol is the "comdat symbol" - the one with the
913      unique name.  GNU uses the section symbol for the unique
914      name; MS uses ".text" for every comdat section.  Sigh.  - DJ */
915 
916   /* This is not mirrored in sec_to_styp_flags(), but there
917      doesn't seem to be a need to, either, and it would at best be
918      rather messy.  */
919 
920   if (! _bfd_coff_get_external_symbols (abfd))
921     return sec_flags;
922 
923   esymstart = esym = (bfd_byte *) obj_coff_external_syms (abfd);
924   esymend = esym + obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd);
925 
926   while (esym < esymend)
927     {
928       struct internal_syment isym;
929       char buf[SYMNMLEN + 1];
930       const char *symname;
931 
932       bfd_coff_swap_sym_in (abfd, esym, & isym);
933 
934       BFD_ASSERT (sizeof (internal_s->s_name) <= SYMNMLEN);
935 
936       if (isym.n_scnum == section->target_index)
937 	{
938 	  /* According to the MSVC documentation, the first
939 	     TWO entries with the section # are both of
940 	     interest to us.  The first one is the "section
941 	     symbol" (section name).  The second is the comdat
942 	     symbol name.  Here, we've found the first
943 	     qualifying entry; we distinguish it from the
944 	     second with a state flag.
945 
946 	     In the case of gas-generated (at least until that
947 	     is fixed) .o files, it isn't necessarily the
948 	     second one.  It may be some other later symbol.
949 
950 	     Since gas also doesn't follow MS conventions and
951 	     emits the section similar to .text$<name>, where
952 	     <something> is the name we're looking for, we
953 	     distinguish the two as follows:
954 
955 	     If the section name is simply a section name (no
956 	     $) we presume it's MS-generated, and look at
957 	     precisely the second symbol for the comdat name.
958 	     If the section name has a $, we assume it's
959 	     gas-generated, and look for <something> (whatever
960 	     follows the $) as the comdat symbol.  */
961 
962 	  /* All 3 branches use this.  */
963 	  symname = _bfd_coff_internal_syment_name (abfd, &isym, buf);
964 
965 	  /* PR 17512 file: 078-11867-0.004  */
966 	  if (symname == NULL)
967 	    {
968 	      _bfd_error_handler (_("%B: unable to load COMDAT section name"),
969 				  abfd);
970 	      break;
971 	    }
972 
973 	  switch (seen_state)
974 	    {
975 	    case 0:
976 	      {
977 		/* The first time we've seen the symbol.  */
978 		union internal_auxent aux;
979 
980 		/* If it isn't the stuff we're expecting, die;
981 		   The MS documentation is vague, but it
982 		   appears that the second entry serves BOTH
983 		   as the comdat symbol and the defining
984 		   symbol record (either C_STAT or C_EXT,
985 		   possibly with an aux entry with debug
986 		   information if it's a function.)  It
987 		   appears the only way to find the second one
988 		   is to count.  (On Intel, they appear to be
989 		   adjacent, but on Alpha, they have been
990 		   found separated.)
991 
992 		   Here, we think we've found the first one,
993 		   but there's some checking we can do to be
994 		   sure.  */
995 
996 		if (! ((isym.n_sclass == C_STAT
997 			|| isym.n_sclass == C_EXT)
998 		       && BTYPE (isym.n_type) == T_NULL
999 		       && isym.n_value == 0))
1000 		  {
1001 		    /* Malformed input files can trigger this test.
1002 		       cf PR 21781.  */
1003 		    _bfd_error_handler (_("%B: error: unexpected symbol '%s' in COMDAT section"),
1004 					abfd, symname);
1005 		    goto breakloop;
1006 		  }
1007 
1008 		/* FIXME LATER: MSVC generates section names
1009 		   like .text for comdats.  Gas generates
1010 		   names like .text$foo__Fv (in the case of a
1011 		   function).  See comment above for more.  */
1012 
1013 		if (isym.n_sclass == C_STAT && strcmp (name, symname) != 0)
1014 		  /* xgettext:c-format */
1015 		  _bfd_error_handler (_("%B: warning: COMDAT symbol '%s'"
1016 					" does not match section name '%s'"),
1017 				      abfd, symname, name);
1018 
1019 		seen_state = 1;
1020 
1021 		/* PR 17512: file: e2cfe54f.  */
1022 		if (esym + bfd_coff_symesz (abfd) >= esymend)
1023 		  {
1024 		    /* xgettext:c-format */
1025 		    _bfd_error_handler (_("%B: warning: No symbol for"
1026 					  " section '%s' found"),
1027 					abfd, symname);
1028 		    break;
1029 		  }
1030 		/* This is the section symbol.  */
1031 		bfd_coff_swap_aux_in (abfd, (esym + bfd_coff_symesz (abfd)),
1032 				      isym.n_type, isym.n_sclass,
1033 				      0, isym.n_numaux, & aux);
1034 
1035 		target_name = strchr (name, '$');
1036 		if (target_name != NULL)
1037 		  {
1038 		    /* Gas mode.  */
1039 		    seen_state = 2;
1040 		    /* Skip the `$'.  */
1041 		    target_name += 1;
1042 		  }
1043 
1044 		/* FIXME: Microsoft uses NODUPLICATES and
1045 		   ASSOCIATIVE, but gnu uses ANY and
1046 		   SAME_SIZE.  Unfortunately, gnu doesn't do
1047 		   the comdat symbols right.  So, until we can
1048 		   fix it to do the right thing, we are
1049 		   temporarily disabling comdats for the MS
1050 		   types (they're used in DLLs and C++, but we
1051 		   don't support *their* C++ libraries anyway
1052 		   - DJ.  */
1053 
1054 		/* Cygwin does not follow the MS style, and
1055 		   uses ANY and SAME_SIZE where NODUPLICATES
1056 		   and ASSOCIATIVE should be used.  For
1057 		   Interix, we just do the right thing up
1058 		   front.  */
1059 
1060 		switch (aux.x_scn.x_comdat)
1061 		  {
1062 		  case IMAGE_COMDAT_SELECT_NODUPLICATES:
1063 #ifdef STRICT_PE_FORMAT
1064 		    sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
1065 #else
1066 		    sec_flags &= ~SEC_LINK_ONCE;
1067 #endif
1068 		    break;
1069 
1070 		  case IMAGE_COMDAT_SELECT_ANY:
1071 		    sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
1072 		    break;
1073 
1074 		  case IMAGE_COMDAT_SELECT_SAME_SIZE:
1075 		    sec_flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
1076 		    break;
1077 
1078 		  case IMAGE_COMDAT_SELECT_EXACT_MATCH:
1079 		    /* Not yet fully implemented ??? */
1080 		    sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
1081 		    break;
1082 
1083 		    /* debug$S gets this case; other
1084 		       implications ??? */
1085 
1086 		    /* There may be no symbol... we'll search
1087 		       the whole table... Is this the right
1088 		       place to play this game? Or should we do
1089 		       it when reading it in.  */
1090 		  case IMAGE_COMDAT_SELECT_ASSOCIATIVE:
1091 #ifdef STRICT_PE_FORMAT
1092 		    /* FIXME: This is not currently implemented.  */
1093 		    sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
1094 #else
1095 		    sec_flags &= ~SEC_LINK_ONCE;
1096 #endif
1097 		    break;
1098 
1099 		  default:  /* 0 means "no symbol" */
1100 		    /* debug$F gets this case; other
1101 		       implications ??? */
1102 		    sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
1103 		    break;
1104 		  }
1105 	      }
1106 	      break;
1107 
1108 	    case 2:
1109 	      /* Gas mode: the first matching on partial name.  */
1110 
1111 #ifndef TARGET_UNDERSCORE
1112 #define TARGET_UNDERSCORE 0
1113 #endif
1114 	      /* Is this the name we're looking for ?  */
1115 	      if (strcmp (target_name,
1116 			  symname + (TARGET_UNDERSCORE ? 1 : 0)) != 0)
1117 		{
1118 		  /* Not the name we're looking for */
1119 		  esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
1120 		  continue;
1121 		}
1122 	      /* Fall through.  */
1123 	    case 1:
1124 	      /* MSVC mode: the lexically second symbol (or
1125 		 drop through from the above).  */
1126 	      {
1127 		char *newname;
1128 		bfd_size_type amt;
1129 
1130 		/* This must the second symbol with the
1131 		   section #.  It is the actual symbol name.
1132 		   Intel puts the two adjacent, but Alpha (at
1133 		   least) spreads them out.  */
1134 
1135 		amt = sizeof (struct coff_comdat_info);
1136 		coff_section_data (abfd, section)->comdat
1137 		  = (struct coff_comdat_info *) bfd_alloc (abfd, amt);
1138 		if (coff_section_data (abfd, section)->comdat == NULL)
1139 		  abort ();
1140 
1141 		coff_section_data (abfd, section)->comdat->symbol =
1142 		  (esym - esymstart) / bfd_coff_symesz (abfd);
1143 
1144 		amt = strlen (symname) + 1;
1145 		newname = (char *) bfd_alloc (abfd, amt);
1146 		if (newname == NULL)
1147 		  abort ();
1148 
1149 		strcpy (newname, symname);
1150 		coff_section_data (abfd, section)->comdat->name
1151 		  = newname;
1152 	      }
1153 
1154 	      goto breakloop;
1155 	    }
1156 	}
1157 
1158       esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd);
1159     }
1160 
1161  breakloop:
1162   return sec_flags;
1163 }
1164 
1165 
1166 /* The PE version; see above for the general comments.
1167 
1168    Since to set the SEC_LINK_ONCE and associated flags, we have to
1169    look at the symbol table anyway, we return the symbol table index
1170    of the symbol being used as the COMDAT symbol.  This is admittedly
1171    ugly, but there's really nowhere else that we have access to the
1172    required information.  FIXME: Is the COMDAT symbol index used for
1173    any purpose other than objdump?  */
1174 
1175 static bfd_boolean
styp_to_sec_flags(bfd * abfd,void * hdr,const char * name,asection * section,flagword * flags_ptr)1176 styp_to_sec_flags (bfd *abfd,
1177 		   void * hdr,
1178 		   const char *name,
1179 		   asection *section,
1180 		   flagword *flags_ptr)
1181 {
1182   struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
1183   unsigned long styp_flags = internal_s->s_flags;
1184   flagword sec_flags;
1185   bfd_boolean result = TRUE;
1186   bfd_boolean is_dbg = FALSE;
1187 
1188   if (CONST_STRNEQ (name, DOT_DEBUG)
1189       || CONST_STRNEQ (name, DOT_ZDEBUG)
1190 #ifdef COFF_LONG_SECTION_NAMES
1191       || CONST_STRNEQ (name, GNU_LINKONCE_WI)
1192       || CONST_STRNEQ (name, GNU_LINKONCE_WT)
1193 #endif
1194       || CONST_STRNEQ (name, ".stab"))
1195     is_dbg = TRUE;
1196   /* Assume read only unless IMAGE_SCN_MEM_WRITE is specified.  */
1197   sec_flags = SEC_READONLY;
1198 
1199   /* If section disallows read, then set the NOREAD flag. */
1200   if ((styp_flags & IMAGE_SCN_MEM_READ) == 0)
1201     sec_flags |= SEC_COFF_NOREAD;
1202 
1203   /* Process each flag bit in styp_flags in turn.  */
1204   while (styp_flags)
1205     {
1206       unsigned long flag = styp_flags & - styp_flags;
1207       char * unhandled = NULL;
1208 
1209       styp_flags &= ~ flag;
1210 
1211       /* We infer from the distinct read/write/execute bits the settings
1212 	 of some of the bfd flags; the actual values, should we need them,
1213 	 are also in pei_section_data (abfd, section)->pe_flags.  */
1214 
1215       switch (flag)
1216 	{
1217 	case STYP_DSECT:
1218 	  unhandled = "STYP_DSECT";
1219 	  break;
1220 	case STYP_GROUP:
1221 	  unhandled = "STYP_GROUP";
1222 	  break;
1223 	case STYP_COPY:
1224 	  unhandled = "STYP_COPY";
1225 	  break;
1226 	case STYP_OVER:
1227 	  unhandled = "STYP_OVER";
1228 	  break;
1229 #ifdef SEC_NEVER_LOAD
1230 	case STYP_NOLOAD:
1231 	  sec_flags |= SEC_NEVER_LOAD;
1232 	  break;
1233 #endif
1234 	case IMAGE_SCN_MEM_READ:
1235 	  sec_flags &= ~SEC_COFF_NOREAD;
1236 	  break;
1237 	case IMAGE_SCN_TYPE_NO_PAD:
1238 	  /* Skip.  */
1239 	  break;
1240 	case IMAGE_SCN_LNK_OTHER:
1241 	  unhandled = "IMAGE_SCN_LNK_OTHER";
1242 	  break;
1243 	case IMAGE_SCN_MEM_NOT_CACHED:
1244 	  unhandled = "IMAGE_SCN_MEM_NOT_CACHED";
1245 	  break;
1246 	case IMAGE_SCN_MEM_NOT_PAGED:
1247 	  /* Generate a warning message rather using the 'unhandled'
1248 	     variable as this will allow some .sys files generate by
1249 	     other toolchains to be processed.  See bugzilla issue 196.  */
1250 	  /* xgettext:c-format */
1251 	  _bfd_error_handler (_("%B: Warning: Ignoring section flag"
1252 				" IMAGE_SCN_MEM_NOT_PAGED in section %s"),
1253 			      abfd, name);
1254 	  break;
1255 	case IMAGE_SCN_MEM_EXECUTE:
1256 	  sec_flags |= SEC_CODE;
1257 	  break;
1258 	case IMAGE_SCN_MEM_WRITE:
1259 	  sec_flags &= ~ SEC_READONLY;
1260 	  break;
1261 	case IMAGE_SCN_MEM_DISCARDABLE:
1262 	  /* The MS PE spec says that debug sections are DISCARDABLE,
1263 	     but the presence of a DISCARDABLE flag does not necessarily
1264 	     mean that a given section contains debug information.  Thus
1265 	     we only set the SEC_DEBUGGING flag on sections that we
1266 	     recognise as containing debug information.  */
1267 	     if (is_dbg
1268 #ifdef _COMMENT
1269 	      || strcmp (name, _COMMENT) == 0
1270 #endif
1271 	      )
1272 	    {
1273 	      sec_flags |= SEC_DEBUGGING | SEC_READONLY;
1274 	    }
1275 	  break;
1276 	case IMAGE_SCN_MEM_SHARED:
1277 	  sec_flags |= SEC_COFF_SHARED;
1278 	  break;
1279 	case IMAGE_SCN_LNK_REMOVE:
1280 	  if (!is_dbg)
1281 	    sec_flags |= SEC_EXCLUDE;
1282 	  break;
1283 	case IMAGE_SCN_CNT_CODE:
1284 	  sec_flags |= SEC_CODE | SEC_ALLOC | SEC_LOAD;
1285 	  break;
1286 	case IMAGE_SCN_CNT_INITIALIZED_DATA:
1287 	  if (is_dbg)
1288 	    sec_flags |= SEC_DEBUGGING;
1289 	  else
1290 	    sec_flags |= SEC_DATA | SEC_ALLOC | SEC_LOAD;
1291 	  break;
1292 	case IMAGE_SCN_CNT_UNINITIALIZED_DATA:
1293 	  sec_flags |= SEC_ALLOC;
1294 	  break;
1295 	case IMAGE_SCN_LNK_INFO:
1296 	  /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
1297 	     defined.  coff_compute_section_file_positions uses
1298 	     COFF_PAGE_SIZE to ensure that the low order bits of the
1299 	     section VMA and the file offset match.  If we don't know
1300 	     COFF_PAGE_SIZE, we can't ensure the correct correspondence,
1301 	     and demand page loading of the file will fail.  */
1302 #ifdef COFF_PAGE_SIZE
1303 	  sec_flags |= SEC_DEBUGGING;
1304 #endif
1305 	  break;
1306 	case IMAGE_SCN_LNK_COMDAT:
1307 	  /* COMDAT gets very special treatment.  */
1308 	  sec_flags = handle_COMDAT (abfd, sec_flags, hdr, name, section);
1309 	  break;
1310 	default:
1311 	  /* Silently ignore for now.  */
1312 	  break;
1313 	}
1314 
1315       /* If the section flag was not handled, report it here.  */
1316       if (unhandled != NULL)
1317 	{
1318 	  _bfd_error_handler
1319 	    /* xgettext:c-format */
1320 	    (_("%B (%s): Section flag %s (%#lx) ignored"),
1321 	     abfd, name, unhandled, flag);
1322 	  result = FALSE;
1323 	}
1324     }
1325 
1326 #if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
1327   /* As a GNU extension, if the name begins with .gnu.linkonce, we
1328      only link a single copy of the section.  This is used to support
1329      g++.  g++ will emit each template expansion in its own section.
1330      The symbols will be defined as weak, so that multiple definitions
1331      are permitted.  The GNU linker extension is to actually discard
1332      all but one of the sections.  */
1333   if (CONST_STRNEQ (name, ".gnu.linkonce"))
1334     sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1335 #endif
1336 
1337   if (flags_ptr)
1338     * flags_ptr = sec_flags;
1339 
1340   return result;
1341 }
1342 
1343 #endif /* COFF_WITH_PE */
1344 
1345 #define	get_index(symbol)	((symbol)->udata.i)
1346 
1347 /*
1348 INTERNAL_DEFINITION
1349 	bfd_coff_backend_data
1350 
1351 CODE_FRAGMENT
1352 
1353 .{* COFF symbol classifications.  *}
1354 .
1355 .enum coff_symbol_classification
1356 .{
1357 .  {* Global symbol.  *}
1358 .  COFF_SYMBOL_GLOBAL,
1359 .  {* Common symbol.  *}
1360 .  COFF_SYMBOL_COMMON,
1361 .  {* Undefined symbol.  *}
1362 .  COFF_SYMBOL_UNDEFINED,
1363 .  {* Local symbol.  *}
1364 .  COFF_SYMBOL_LOCAL,
1365 .  {* PE section symbol.  *}
1366 .  COFF_SYMBOL_PE_SECTION
1367 .};
1368 .
1369 .typedef asection * (*coff_gc_mark_hook_fn)
1370 .  (asection *, struct bfd_link_info *, struct internal_reloc *,
1371 .   struct coff_link_hash_entry *, struct internal_syment *);
1372 .
1373 Special entry points for gdb to swap in coff symbol table parts:
1374 .typedef struct
1375 .{
1376 .  void (*_bfd_coff_swap_aux_in)
1377 .    (bfd *, void *, int, int, int, int, void *);
1378 .
1379 .  void (*_bfd_coff_swap_sym_in)
1380 .    (bfd *, void *, void *);
1381 .
1382 .  void (*_bfd_coff_swap_lineno_in)
1383 .    (bfd *, void *, void *);
1384 .
1385 .  unsigned int (*_bfd_coff_swap_aux_out)
1386 .    (bfd *, void *, int, int, int, int, void *);
1387 .
1388 .  unsigned int (*_bfd_coff_swap_sym_out)
1389 .    (bfd *, void *, void *);
1390 .
1391 .  unsigned int (*_bfd_coff_swap_lineno_out)
1392 .    (bfd *, void *, void *);
1393 .
1394 .  unsigned int (*_bfd_coff_swap_reloc_out)
1395 .    (bfd *, void *, void *);
1396 .
1397 .  unsigned int (*_bfd_coff_swap_filehdr_out)
1398 .    (bfd *, void *, void *);
1399 .
1400 .  unsigned int (*_bfd_coff_swap_aouthdr_out)
1401 .    (bfd *, void *, void *);
1402 .
1403 .  unsigned int (*_bfd_coff_swap_scnhdr_out)
1404 .    (bfd *, void *, void *);
1405 .
1406 .  unsigned int _bfd_filhsz;
1407 .  unsigned int _bfd_aoutsz;
1408 .  unsigned int _bfd_scnhsz;
1409 .  unsigned int _bfd_symesz;
1410 .  unsigned int _bfd_auxesz;
1411 .  unsigned int _bfd_relsz;
1412 .  unsigned int _bfd_linesz;
1413 .  unsigned int _bfd_filnmlen;
1414 .  bfd_boolean _bfd_coff_long_filenames;
1415 .
1416 .  bfd_boolean _bfd_coff_long_section_names;
1417 .  bfd_boolean (*_bfd_coff_set_long_section_names)
1418 .    (bfd *, int);
1419 .
1420 .  unsigned int _bfd_coff_default_section_alignment_power;
1421 .  bfd_boolean _bfd_coff_force_symnames_in_strings;
1422 .  unsigned int _bfd_coff_debug_string_prefix_length;
1423 .  unsigned int _bfd_coff_max_nscns;
1424 .
1425 .  void (*_bfd_coff_swap_filehdr_in)
1426 .    (bfd *, void *, void *);
1427 .
1428 .  void (*_bfd_coff_swap_aouthdr_in)
1429 .    (bfd *, void *, void *);
1430 .
1431 .  void (*_bfd_coff_swap_scnhdr_in)
1432 .    (bfd *, void *, void *);
1433 .
1434 .  void (*_bfd_coff_swap_reloc_in)
1435 .    (bfd *abfd, void *, void *);
1436 .
1437 .  bfd_boolean (*_bfd_coff_bad_format_hook)
1438 .    (bfd *, void *);
1439 .
1440 .  bfd_boolean (*_bfd_coff_set_arch_mach_hook)
1441 .    (bfd *, void *);
1442 .
1443 .  void * (*_bfd_coff_mkobject_hook)
1444 .    (bfd *, void *, void *);
1445 .
1446 .  bfd_boolean (*_bfd_styp_to_sec_flags_hook)
1447 .    (bfd *, void *, const char *, asection *, flagword *);
1448 .
1449 .  void (*_bfd_set_alignment_hook)
1450 .    (bfd *, asection *, void *);
1451 .
1452 .  bfd_boolean (*_bfd_coff_slurp_symbol_table)
1453 .    (bfd *);
1454 .
1455 .  bfd_boolean (*_bfd_coff_symname_in_debug)
1456 .    (bfd *, struct internal_syment *);
1457 .
1458 .  bfd_boolean (*_bfd_coff_pointerize_aux_hook)
1459 .    (bfd *, combined_entry_type *, combined_entry_type *,
1460 .     unsigned int, combined_entry_type *);
1461 .
1462 .  bfd_boolean (*_bfd_coff_print_aux)
1463 .    (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
1464 .     combined_entry_type *, unsigned int);
1465 .
1466 .  void (*_bfd_coff_reloc16_extra_cases)
1467 .    (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
1468 .     bfd_byte *, unsigned int *, unsigned int *);
1469 .
1470 .  int (*_bfd_coff_reloc16_estimate)
1471 .    (bfd *, asection *, arelent *, unsigned int,
1472 .     struct bfd_link_info *);
1473 .
1474 .  enum coff_symbol_classification (*_bfd_coff_classify_symbol)
1475 .    (bfd *, struct internal_syment *);
1476 .
1477 .  bfd_boolean (*_bfd_coff_compute_section_file_positions)
1478 .    (bfd *);
1479 .
1480 .  bfd_boolean (*_bfd_coff_start_final_link)
1481 .    (bfd *, struct bfd_link_info *);
1482 .
1483 .  bfd_boolean (*_bfd_coff_relocate_section)
1484 .    (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
1485 .     struct internal_reloc *, struct internal_syment *, asection **);
1486 .
1487 .  reloc_howto_type *(*_bfd_coff_rtype_to_howto)
1488 .    (bfd *, asection *, struct internal_reloc *,
1489 .     struct coff_link_hash_entry *, struct internal_syment *, bfd_vma *);
1490 .
1491 .  bfd_boolean (*_bfd_coff_adjust_symndx)
1492 .    (bfd *, struct bfd_link_info *, bfd *, asection *,
1493 .     struct internal_reloc *, bfd_boolean *);
1494 .
1495 .  bfd_boolean (*_bfd_coff_link_add_one_symbol)
1496 .    (struct bfd_link_info *, bfd *, const char *, flagword,
1497 .     asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
1498 .     struct bfd_link_hash_entry **);
1499 .
1500 .  bfd_boolean (*_bfd_coff_link_output_has_begun)
1501 .    (bfd *, struct coff_final_link_info *);
1502 .
1503 .  bfd_boolean (*_bfd_coff_final_link_postscript)
1504 .    (bfd *, struct coff_final_link_info *);
1505 .
1506 .  bfd_boolean (*_bfd_coff_print_pdata)
1507 .    (bfd *, void *);
1508 .
1509 .} bfd_coff_backend_data;
1510 .
1511 .#define coff_backend_info(abfd) \
1512 .  ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
1513 .
1514 .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
1515 .  ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
1516 .
1517 .#define bfd_coff_swap_sym_in(a,e,i) \
1518 .  ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
1519 .
1520 .#define bfd_coff_swap_lineno_in(a,e,i) \
1521 .  ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
1522 .
1523 .#define bfd_coff_swap_reloc_out(abfd, i, o) \
1524 .  ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
1525 .
1526 .#define bfd_coff_swap_lineno_out(abfd, i, o) \
1527 .  ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
1528 .
1529 .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
1530 .  ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
1531 .
1532 .#define bfd_coff_swap_sym_out(abfd, i,o) \
1533 .  ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
1534 .
1535 .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
1536 .  ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
1537 .
1538 .#define bfd_coff_swap_filehdr_out(abfd, i,o) \
1539 .  ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
1540 .
1541 .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
1542 .  ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
1543 .
1544 .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
1545 .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
1546 .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
1547 .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
1548 .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
1549 .#define bfd_coff_relsz(abfd)  (coff_backend_info (abfd)->_bfd_relsz)
1550 .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
1551 .#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
1552 .#define bfd_coff_long_filenames(abfd) \
1553 .  (coff_backend_info (abfd)->_bfd_coff_long_filenames)
1554 .#define bfd_coff_long_section_names(abfd) \
1555 .  (coff_backend_info (abfd)->_bfd_coff_long_section_names)
1556 .#define bfd_coff_set_long_section_names(abfd, enable) \
1557 .  ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable))
1558 .#define bfd_coff_default_section_alignment_power(abfd) \
1559 .  (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
1560 .#define bfd_coff_max_nscns(abfd) \
1561 .  (coff_backend_info (abfd)->_bfd_coff_max_nscns)
1562 .
1563 .#define bfd_coff_swap_filehdr_in(abfd, i,o) \
1564 .  ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
1565 .
1566 .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
1567 .  ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
1568 .
1569 .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
1570 .  ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
1571 .
1572 .#define bfd_coff_swap_reloc_in(abfd, i, o) \
1573 .  ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
1574 .
1575 .#define bfd_coff_bad_format_hook(abfd, filehdr) \
1576 .  ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
1577 .
1578 .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
1579 .  ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
1580 .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
1581 .  ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
1582 .   (abfd, filehdr, aouthdr))
1583 .
1584 .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
1585 .  ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
1586 .   (abfd, scnhdr, name, section, flags_ptr))
1587 .
1588 .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
1589 .  ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
1590 .
1591 .#define bfd_coff_slurp_symbol_table(abfd)\
1592 .  ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
1593 .
1594 .#define bfd_coff_symname_in_debug(abfd, sym)\
1595 .  ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
1596 .
1597 .#define bfd_coff_force_symnames_in_strings(abfd)\
1598 .  (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
1599 .
1600 .#define bfd_coff_debug_string_prefix_length(abfd)\
1601 .  (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
1602 .
1603 .#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
1604 .  ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
1605 .   (abfd, file, base, symbol, aux, indaux))
1606 .
1607 .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
1608 .				      reloc, data, src_ptr, dst_ptr)\
1609 .  ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
1610 .   (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
1611 .
1612 .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
1613 .  ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
1614 .   (abfd, section, reloc, shrink, link_info))
1615 .
1616 .#define bfd_coff_classify_symbol(abfd, sym)\
1617 .  ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
1618 .   (abfd, sym))
1619 .
1620 .#define bfd_coff_compute_section_file_positions(abfd)\
1621 .  ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
1622 .   (abfd))
1623 .
1624 .#define bfd_coff_start_final_link(obfd, info)\
1625 .  ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
1626 .   (obfd, info))
1627 .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
1628 .  ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
1629 .   (obfd, info, ibfd, o, con, rel, isyms, secs))
1630 .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
1631 .  ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
1632 .   (abfd, sec, rel, h, sym, addendp))
1633 .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
1634 .  ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
1635 .   (obfd, info, ibfd, sec, rel, adjustedp))
1636 .#define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
1637 .				      value, string, cp, coll, hashp)\
1638 .  ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
1639 .   (info, abfd, name, flags, section, value, string, cp, coll, hashp))
1640 .
1641 .#define bfd_coff_link_output_has_begun(a,p) \
1642 .  ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p))
1643 .#define bfd_coff_final_link_postscript(a,p) \
1644 .  ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
1645 .
1646 .#define bfd_coff_have_print_pdata(a) \
1647 .  (coff_backend_info (a)->_bfd_coff_print_pdata)
1648 .#define bfd_coff_print_pdata(a,p) \
1649 .  ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p))
1650 .
1651 .{* Macro: Returns true if the bfd is a PE executable as opposed to a
1652 .   PE object file.  *}
1653 .#define bfd_pei_p(abfd) \
1654 .  (CONST_STRNEQ ((abfd)->xvec->name, "pei-"))
1655 */
1656 
1657 /* See whether the magic number matches.  */
1658 
1659 static bfd_boolean
coff_bad_format_hook(bfd * abfd ATTRIBUTE_UNUSED,void * filehdr)1660 coff_bad_format_hook (bfd * abfd ATTRIBUTE_UNUSED, void * filehdr)
1661 {
1662   struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1663 
1664   if (BADMAG (*internal_f))
1665     return FALSE;
1666 
1667   /* If the optional header is NULL or not the correct size then
1668      quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1669      and Intel 960 readwrite headers (I960WRMAGIC) is that the
1670      optional header is of a different size.
1671 
1672      But the mips keeps extra stuff in it's opthdr, so dont check
1673      when doing that.  */
1674 
1675 #if defined(M88) || defined(I960)
1676   if (internal_f->f_opthdr != 0 && bfd_coff_aoutsz (abfd) != internal_f->f_opthdr)
1677     return FALSE;
1678 #endif
1679 
1680   return TRUE;
1681 }
1682 
1683 #ifdef TICOFF
1684 static bfd_boolean
ticoff0_bad_format_hook(bfd * abfd ATTRIBUTE_UNUSED,void * filehdr)1685 ticoff0_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED, void * filehdr)
1686 {
1687   struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1688 
1689   if (COFF0_BADMAG (*internal_f))
1690     return FALSE;
1691 
1692   return TRUE;
1693 }
1694 #endif
1695 
1696 #ifdef TICOFF
1697 static bfd_boolean
ticoff1_bad_format_hook(bfd * abfd ATTRIBUTE_UNUSED,void * filehdr)1698 ticoff1_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED, void * filehdr)
1699 {
1700   struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
1701 
1702   if (COFF1_BADMAG (*internal_f))
1703     return FALSE;
1704 
1705   return TRUE;
1706 }
1707 #endif
1708 
1709 /* Check whether this section uses an alignment other than the
1710    default.  */
1711 
1712 static void
coff_set_custom_section_alignment(bfd * abfd ATTRIBUTE_UNUSED,asection * section,const struct coff_section_alignment_entry * alignment_table,const unsigned int table_size)1713 coff_set_custom_section_alignment (bfd *abfd ATTRIBUTE_UNUSED,
1714 				   asection *section,
1715 				   const struct coff_section_alignment_entry *alignment_table,
1716 				   const unsigned int table_size)
1717 {
1718   const unsigned int default_alignment = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1719   unsigned int i;
1720 
1721   for (i = 0; i < table_size; ++i)
1722     {
1723       const char *secname = bfd_get_section_name (abfd, section);
1724 
1725       if (alignment_table[i].comparison_length == (unsigned int) -1
1726 	  ? strcmp (alignment_table[i].name, secname) == 0
1727 	  : strncmp (alignment_table[i].name, secname,
1728 		     alignment_table[i].comparison_length) == 0)
1729 	break;
1730     }
1731   if (i >= table_size)
1732     return;
1733 
1734   if (alignment_table[i].default_alignment_min != COFF_ALIGNMENT_FIELD_EMPTY
1735       && default_alignment < alignment_table[i].default_alignment_min)
1736     return;
1737 
1738   if (alignment_table[i].default_alignment_max != COFF_ALIGNMENT_FIELD_EMPTY
1739 #if COFF_DEFAULT_SECTION_ALIGNMENT_POWER != 0
1740       && default_alignment > alignment_table[i].default_alignment_max
1741 #endif
1742       )
1743     return;
1744 
1745   section->alignment_power = alignment_table[i].alignment_power;
1746 }
1747 
1748 /* Custom section alignment records.  */
1749 
1750 static const struct coff_section_alignment_entry
1751 coff_section_alignment_table[] =
1752 {
1753 #ifdef COFF_SECTION_ALIGNMENT_ENTRIES
1754   COFF_SECTION_ALIGNMENT_ENTRIES,
1755 #endif
1756   /* There must not be any gaps between .stabstr sections.  */
1757   { COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"),
1758     1, COFF_ALIGNMENT_FIELD_EMPTY, 0 },
1759   /* The .stab section must be aligned to 2**2 at most, to avoid gaps.  */
1760   { COFF_SECTION_NAME_PARTIAL_MATCH (".stab"),
1761     3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1762   /* Similarly for the .ctors and .dtors sections.  */
1763   { COFF_SECTION_NAME_EXACT_MATCH (".ctors"),
1764     3, COFF_ALIGNMENT_FIELD_EMPTY, 2 },
1765   { COFF_SECTION_NAME_EXACT_MATCH (".dtors"),
1766     3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }
1767 };
1768 
1769 static const unsigned int coff_section_alignment_table_size =
1770   sizeof coff_section_alignment_table / sizeof coff_section_alignment_table[0];
1771 
1772 /* Initialize a section structure with information peculiar to this
1773    particular implementation of COFF.  */
1774 
1775 static bfd_boolean
coff_new_section_hook(bfd * abfd,asection * section)1776 coff_new_section_hook (bfd * abfd, asection * section)
1777 {
1778   combined_entry_type *native;
1779   bfd_size_type amt;
1780   unsigned char sclass = C_STAT;
1781 
1782   section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER;
1783 
1784 #ifdef RS6000COFF_C
1785   if (bfd_xcoff_text_align_power (abfd) != 0
1786       && strcmp (bfd_get_section_name (abfd, section), ".text") == 0)
1787     section->alignment_power = bfd_xcoff_text_align_power (abfd);
1788   else if (bfd_xcoff_data_align_power (abfd) != 0
1789       && strcmp (bfd_get_section_name (abfd, section), ".data") == 0)
1790     section->alignment_power = bfd_xcoff_data_align_power (abfd);
1791   else
1792     {
1793       int i;
1794 
1795       for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++)
1796 	if (strcmp (bfd_get_section_name (abfd, section),
1797 		    xcoff_dwsect_names[i].name) == 0)
1798 	  {
1799 	    section->alignment_power = 0;
1800 	    sclass = C_DWARF;
1801 	    break;
1802 	  }
1803     }
1804 #endif
1805 
1806   /* Set up the section symbol.  */
1807   if (!_bfd_generic_new_section_hook (abfd, section))
1808     return FALSE;
1809 
1810   /* Allocate aux records for section symbols, to store size and
1811      related info.
1812 
1813      @@ The 10 is a guess at a plausible maximum number of aux entries
1814      (but shouldn't be a constant).  */
1815   amt = sizeof (combined_entry_type) * 10;
1816   native = (combined_entry_type *) bfd_zalloc (abfd, amt);
1817   if (native == NULL)
1818     return FALSE;
1819 
1820   /* We don't need to set up n_name, n_value, or n_scnum in the native
1821      symbol information, since they'll be overridden by the BFD symbol
1822      anyhow.  However, we do need to set the type and storage class,
1823      in case this symbol winds up getting written out.  The value 0
1824      for n_numaux is already correct.  */
1825 
1826   native->is_sym = TRUE;
1827   native->u.syment.n_type = T_NULL;
1828   native->u.syment.n_sclass = sclass;
1829 
1830   coffsymbol (section->symbol)->native = native;
1831 
1832   coff_set_custom_section_alignment (abfd, section,
1833 				     coff_section_alignment_table,
1834 				     coff_section_alignment_table_size);
1835 
1836   return TRUE;
1837 }
1838 
1839 #ifdef COFF_ALIGN_IN_SECTION_HEADER
1840 
1841 /* Set the alignment of a BFD section.  */
1842 
1843 static void
coff_set_alignment_hook(bfd * abfd ATTRIBUTE_UNUSED,asection * section,void * scnhdr)1844 coff_set_alignment_hook (bfd * abfd ATTRIBUTE_UNUSED,
1845 			 asection * section,
1846 			 void * scnhdr)
1847 {
1848   struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1849   unsigned int i;
1850 
1851 #ifdef I960
1852   /* Extract ALIGN from 2**ALIGN stored in section header.  */
1853   for (i = 0; i < 32; i++)
1854     if ((1 << i) >= hdr->s_align)
1855       break;
1856 #endif
1857 #ifdef COFF_DECODE_ALIGNMENT
1858   i = COFF_DECODE_ALIGNMENT(hdr->s_flags);
1859 #endif
1860   section->alignment_power = i;
1861 
1862 #ifdef coff_set_section_load_page
1863   coff_set_section_load_page (section, hdr->s_page);
1864 #endif
1865 }
1866 
1867 #else /* ! COFF_ALIGN_IN_SECTION_HEADER */
1868 #ifdef COFF_WITH_PE
1869 
1870 static void
coff_set_alignment_hook(bfd * abfd ATTRIBUTE_UNUSED,asection * section,void * scnhdr)1871 coff_set_alignment_hook (bfd * abfd ATTRIBUTE_UNUSED,
1872 			 asection * section,
1873 			 void * scnhdr)
1874 {
1875   struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1876   bfd_size_type amt;
1877   unsigned int alignment_power_const
1878     = hdr->s_flags & IMAGE_SCN_ALIGN_POWER_BIT_MASK;
1879 
1880   switch (alignment_power_const)
1881     {
1882     case IMAGE_SCN_ALIGN_8192BYTES:
1883     case IMAGE_SCN_ALIGN_4096BYTES:
1884     case IMAGE_SCN_ALIGN_2048BYTES:
1885     case IMAGE_SCN_ALIGN_1024BYTES:
1886     case IMAGE_SCN_ALIGN_512BYTES:
1887     case IMAGE_SCN_ALIGN_256BYTES:
1888     case IMAGE_SCN_ALIGN_128BYTES:
1889     case IMAGE_SCN_ALIGN_64BYTES:
1890     case IMAGE_SCN_ALIGN_32BYTES:
1891     case IMAGE_SCN_ALIGN_16BYTES:
1892     case IMAGE_SCN_ALIGN_8BYTES:
1893     case IMAGE_SCN_ALIGN_4BYTES:
1894     case IMAGE_SCN_ALIGN_2BYTES:
1895     case IMAGE_SCN_ALIGN_1BYTES:
1896       section->alignment_power
1897 	= IMAGE_SCN_ALIGN_POWER_NUM (alignment_power_const);
1898       break;
1899     default:
1900       break;
1901     }
1902 
1903   /* In a PE image file, the s_paddr field holds the virtual size of a
1904      section, while the s_size field holds the raw size.  We also keep
1905      the original section flag value, since not every bit can be
1906      mapped onto a generic BFD section bit.  */
1907   if (coff_section_data (abfd, section) == NULL)
1908     {
1909       amt = sizeof (struct coff_section_tdata);
1910       section->used_by_bfd = bfd_zalloc (abfd, amt);
1911       if (section->used_by_bfd == NULL)
1912 	/* FIXME: Return error.  */
1913 	abort ();
1914     }
1915 
1916   if (pei_section_data (abfd, section) == NULL)
1917     {
1918       amt = sizeof (struct pei_section_tdata);
1919       coff_section_data (abfd, section)->tdata = bfd_zalloc (abfd, amt);
1920       if (coff_section_data (abfd, section)->tdata == NULL)
1921 	/* FIXME: Return error.  */
1922 	abort ();
1923     }
1924   pei_section_data (abfd, section)->virt_size = hdr->s_paddr;
1925   pei_section_data (abfd, section)->pe_flags = hdr->s_flags;
1926 
1927   section->lma = hdr->s_vaddr;
1928 
1929   /* Check for extended relocs.  */
1930   if (hdr->s_flags & IMAGE_SCN_LNK_NRELOC_OVFL)
1931     {
1932       struct external_reloc dst;
1933       struct internal_reloc n;
1934       file_ptr oldpos = bfd_tell (abfd);
1935       bfd_size_type relsz = bfd_coff_relsz (abfd);
1936 
1937       if (bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0) != 0)
1938 	return;
1939       if (bfd_bread (& dst, relsz, abfd) != relsz)
1940 	return;
1941 
1942       coff_swap_reloc_in (abfd, &dst, &n);
1943       if (bfd_seek (abfd, oldpos, 0) != 0)
1944 	return;
1945       section->reloc_count = hdr->s_nreloc = n.r_vaddr - 1;
1946       section->rel_filepos += relsz;
1947     }
1948   else if (hdr->s_nreloc == 0xffff)
1949     _bfd_error_handler
1950       (_("%B: warning: claims to have 0xffff relocs, without overflow"),
1951        abfd);
1952 }
1953 #undef ALIGN_SET
1954 #undef ELIFALIGN_SET
1955 
1956 #else /* ! COFF_WITH_PE */
1957 #ifdef RS6000COFF_C
1958 
1959 /* We grossly abuse this function to handle XCOFF overflow headers.
1960    When we see one, we correct the reloc and line number counts in the
1961    real header, and remove the section we just created.  */
1962 
1963 static void
coff_set_alignment_hook(bfd * abfd,asection * section,void * scnhdr)1964 coff_set_alignment_hook (bfd *abfd, asection *section, void * scnhdr)
1965 {
1966   struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
1967   asection *real_sec;
1968 
1969   if ((hdr->s_flags & STYP_OVRFLO) == 0)
1970     return;
1971 
1972   real_sec = coff_section_from_bfd_index (abfd, (int) hdr->s_nreloc);
1973   if (real_sec == NULL)
1974     return;
1975 
1976   real_sec->reloc_count = hdr->s_paddr;
1977   real_sec->lineno_count = hdr->s_vaddr;
1978 
1979   if (!bfd_section_removed_from_list (abfd, section))
1980     {
1981       bfd_section_list_remove (abfd, section);
1982       --abfd->section_count;
1983     }
1984 }
1985 
1986 #else /* ! RS6000COFF_C */
1987 
1988 #define coff_set_alignment_hook \
1989   ((void (*) (bfd *, asection *, void *)) bfd_void)
1990 
1991 #endif /* ! RS6000COFF_C */
1992 #endif /* ! COFF_WITH_PE */
1993 #endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
1994 
1995 #ifndef coff_mkobject
1996 
1997 static bfd_boolean
coff_mkobject(bfd * abfd)1998 coff_mkobject (bfd * abfd)
1999 {
2000   coff_data_type *coff;
2001   bfd_size_type amt = sizeof (coff_data_type);
2002 
2003   abfd->tdata.coff_obj_data = bfd_zalloc (abfd, amt);
2004   if (abfd->tdata.coff_obj_data == NULL)
2005     return FALSE;
2006   coff = coff_data (abfd);
2007   coff->symbols = NULL;
2008   coff->conversion_table = NULL;
2009   coff->raw_syments = NULL;
2010   coff->relocbase = 0;
2011   coff->local_toc_sym_map = 0;
2012 
2013 /*  make_abs_section(abfd);*/
2014 
2015   return TRUE;
2016 }
2017 #endif
2018 
2019 /* Create the COFF backend specific information.  */
2020 
2021 #ifndef coff_mkobject_hook
2022 static void *
coff_mkobject_hook(bfd * abfd,void * filehdr,void * aouthdr ATTRIBUTE_UNUSED)2023 coff_mkobject_hook (bfd * abfd,
2024 		    void * filehdr,
2025 		    void * aouthdr ATTRIBUTE_UNUSED)
2026 {
2027   struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
2028   coff_data_type *coff;
2029 
2030   if (! coff_mkobject (abfd))
2031     return NULL;
2032 
2033   coff = coff_data (abfd);
2034 
2035   coff->sym_filepos = internal_f->f_symptr;
2036 
2037   /* These members communicate important constants about the symbol
2038      table to GDB's symbol-reading code.  These `constants'
2039      unfortunately vary among coff implementations...  */
2040   coff->local_n_btmask = N_BTMASK;
2041   coff->local_n_btshft = N_BTSHFT;
2042   coff->local_n_tmask = N_TMASK;
2043   coff->local_n_tshift = N_TSHIFT;
2044   coff->local_symesz = bfd_coff_symesz (abfd);
2045   coff->local_auxesz = bfd_coff_auxesz (abfd);
2046   coff->local_linesz = bfd_coff_linesz (abfd);
2047 
2048   coff->timestamp = internal_f->f_timdat;
2049 
2050   obj_raw_syment_count (abfd) =
2051     obj_conv_table_size (abfd) =
2052       internal_f->f_nsyms;
2053 
2054 #ifdef RS6000COFF_C
2055   if ((internal_f->f_flags & F_SHROBJ) != 0)
2056     abfd->flags |= DYNAMIC;
2057   if (aouthdr != NULL && internal_f->f_opthdr >= bfd_coff_aoutsz (abfd))
2058     {
2059       struct internal_aouthdr *internal_a =
2060 	(struct internal_aouthdr *) aouthdr;
2061       struct xcoff_tdata *xcoff;
2062 
2063       xcoff = xcoff_data (abfd);
2064 # ifdef U803XTOCMAGIC
2065       xcoff->xcoff64 = internal_f->f_magic == U803XTOCMAGIC;
2066 # else
2067       xcoff->xcoff64 = 0;
2068 # endif
2069       xcoff->full_aouthdr = TRUE;
2070       xcoff->toc = internal_a->o_toc;
2071       xcoff->sntoc = internal_a->o_sntoc;
2072       xcoff->snentry = internal_a->o_snentry;
2073       bfd_xcoff_text_align_power (abfd) = internal_a->o_algntext;
2074       bfd_xcoff_data_align_power (abfd) = internal_a->o_algndata;
2075       xcoff->modtype = internal_a->o_modtype;
2076       xcoff->cputype = internal_a->o_cputype;
2077       xcoff->maxdata = internal_a->o_maxdata;
2078       xcoff->maxstack = internal_a->o_maxstack;
2079     }
2080 #endif
2081 
2082 #ifdef ARM
2083   /* Set the flags field from the COFF header read in.  */
2084   if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
2085     coff->flags = 0;
2086 #endif
2087 
2088 #ifdef COFF_WITH_PE
2089   /* FIXME: I'm not sure this is ever executed, since peicode.h
2090      defines coff_mkobject_hook.  */
2091   if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
2092     abfd->flags |= HAS_DEBUG;
2093 #endif
2094 
2095   if ((internal_f->f_flags & F_GO32STUB) != 0)
2096     {
2097       coff->go32stub = (char *) bfd_alloc (abfd, (bfd_size_type) GO32_STUBSIZE);
2098       if (coff->go32stub == NULL)
2099 	return NULL;
2100     }
2101   if (coff->go32stub != NULL)
2102     memcpy (coff->go32stub, internal_f->go32stub, GO32_STUBSIZE);
2103 
2104   return coff;
2105 }
2106 #endif
2107 
2108 /* Determine the machine architecture and type.  FIXME: This is target
2109    dependent because the magic numbers are defined in the target
2110    dependent header files.  But there is no particular need for this.
2111    If the magic numbers were moved to a separate file, this function
2112    would be target independent and would also be much more successful
2113    at linking together COFF files for different architectures.  */
2114 
2115 static bfd_boolean
coff_set_arch_mach_hook(bfd * abfd,void * filehdr)2116 coff_set_arch_mach_hook (bfd *abfd, void * filehdr)
2117 {
2118   unsigned long machine;
2119   enum bfd_architecture arch;
2120   struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
2121 
2122   /* Zero selects the default machine for an arch.  */
2123   machine = 0;
2124   switch (internal_f->f_magic)
2125     {
2126 #ifdef PPCMAGIC
2127     case PPCMAGIC:
2128       arch = bfd_arch_powerpc;
2129       break;
2130 #endif
2131 #ifdef I386MAGIC
2132     case I386MAGIC:
2133     case I386PTXMAGIC:
2134     case I386AIXMAGIC:		/* Danbury PS/2 AIX C Compiler.  */
2135     case LYNXCOFFMAGIC:		/* Shadows the m68k Lynx number below, sigh.  */
2136       arch = bfd_arch_i386;
2137       break;
2138 #endif
2139 #ifdef AMD64MAGIC
2140     case AMD64MAGIC:
2141       arch = bfd_arch_i386;
2142       machine = bfd_mach_x86_64;
2143       break;
2144 #endif
2145 #ifdef IA64MAGIC
2146     case IA64MAGIC:
2147       arch = bfd_arch_ia64;
2148       break;
2149 #endif
2150 #ifdef ARMMAGIC
2151     case ARMMAGIC:
2152     case ARMPEMAGIC:
2153     case THUMBPEMAGIC:
2154       arch = bfd_arch_arm;
2155       machine = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
2156       if (machine == bfd_mach_arm_unknown)
2157 	{
2158 	  switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK)
2159 	    {
2160 	    case F_ARM_2:  machine = bfd_mach_arm_2;  break;
2161 	    case F_ARM_2a: machine = bfd_mach_arm_2a; break;
2162 	    case F_ARM_3:  machine = bfd_mach_arm_3;  break;
2163 	    default:
2164 	    case F_ARM_3M: machine = bfd_mach_arm_3M; break;
2165 	    case F_ARM_4:  machine = bfd_mach_arm_4;  break;
2166 	    case F_ARM_4T: machine = bfd_mach_arm_4T; break;
2167 	      /* The COFF header does not have enough bits available
2168 		 to cover all the different ARM architectures.  So
2169 		 we interpret F_ARM_5, the highest flag value to mean
2170 		 "the highest ARM architecture known to BFD" which is
2171 		 currently the XScale.  */
2172 	    case F_ARM_5:  machine = bfd_mach_arm_XScale;  break;
2173 	    }
2174 	}
2175       break;
2176 #endif
2177 #ifdef MC68MAGIC
2178     case MC68MAGIC:
2179     case M68MAGIC:
2180 #ifdef MC68KBCSMAGIC
2181     case MC68KBCSMAGIC:
2182 #endif
2183 #ifdef APOLLOM68KMAGIC
2184     case APOLLOM68KMAGIC:
2185 #endif
2186 #ifdef LYNXCOFFMAGIC
2187     case LYNXCOFFMAGIC:
2188 #endif
2189       arch = bfd_arch_m68k;
2190       machine = bfd_mach_m68020;
2191       break;
2192 #endif
2193 #ifdef MC88MAGIC
2194     case MC88MAGIC:
2195     case MC88DMAGIC:
2196     case MC88OMAGIC:
2197       arch = bfd_arch_m88k;
2198       machine = 88100;
2199       break;
2200 #endif
2201 #ifdef Z80MAGIC
2202     case Z80MAGIC:
2203       arch = bfd_arch_z80;
2204       switch (internal_f->f_flags & F_MACHMASK)
2205 	{
2206 	case 0:
2207 	case bfd_mach_z80strict << 12:
2208 	case bfd_mach_z80 << 12:
2209 	case bfd_mach_z80full << 12:
2210 	case bfd_mach_r800 << 12:
2211 	  machine = ((unsigned)internal_f->f_flags & F_MACHMASK) >> 12;
2212 	  break;
2213 	default:
2214 	  return FALSE;
2215 	}
2216       break;
2217 #endif
2218 #ifdef Z8KMAGIC
2219     case Z8KMAGIC:
2220       arch = bfd_arch_z8k;
2221       switch (internal_f->f_flags & F_MACHMASK)
2222 	{
2223 	case F_Z8001:
2224 	  machine = bfd_mach_z8001;
2225 	  break;
2226 	case F_Z8002:
2227 	  machine = bfd_mach_z8002;
2228 	  break;
2229 	default:
2230 	  return FALSE;
2231 	}
2232       break;
2233 #endif
2234 #ifdef I860
2235     case I860MAGIC:
2236       arch = bfd_arch_i860;
2237       break;
2238 #endif
2239 #ifdef I960
2240 #ifdef I960ROMAGIC
2241     case I960ROMAGIC:
2242     case I960RWMAGIC:
2243       arch = bfd_arch_i960;
2244       switch (F_I960TYPE & internal_f->f_flags)
2245 	{
2246 	default:
2247 	case F_I960CORE:
2248 	  machine = bfd_mach_i960_core;
2249 	  break;
2250 	case F_I960KB:
2251 	  machine = bfd_mach_i960_kb_sb;
2252 	  break;
2253 	case F_I960MC:
2254 	  machine = bfd_mach_i960_mc;
2255 	  break;
2256 	case F_I960XA:
2257 	  machine = bfd_mach_i960_xa;
2258 	  break;
2259 	case F_I960CA:
2260 	  machine = bfd_mach_i960_ca;
2261 	  break;
2262 	case F_I960KA:
2263 	  machine = bfd_mach_i960_ka_sa;
2264 	  break;
2265 	case F_I960JX:
2266 	  machine = bfd_mach_i960_jx;
2267 	  break;
2268 	case F_I960HX:
2269 	  machine = bfd_mach_i960_hx;
2270 	  break;
2271 	}
2272       break;
2273 #endif
2274 #endif
2275 
2276 #ifdef RS6000COFF_C
2277 #ifdef XCOFF64
2278     case U64_TOCMAGIC:
2279     case U803XTOCMAGIC:
2280 #else
2281     case U802ROMAGIC:
2282     case U802WRMAGIC:
2283     case U802TOCMAGIC:
2284 #endif
2285       {
2286 	int cputype;
2287 
2288 	if (xcoff_data (abfd)->cputype != -1)
2289 	  cputype = xcoff_data (abfd)->cputype & 0xff;
2290 	else
2291 	  {
2292 	    /* We did not get a value from the a.out header.  If the
2293 	       file has not been stripped, we may be able to get the
2294 	       architecture information from the first symbol, if it
2295 	       is a .file symbol.  */
2296 	    if (obj_raw_syment_count (abfd) == 0)
2297 	      cputype = 0;
2298 	    else
2299 	      {
2300 		bfd_byte *buf;
2301 		struct internal_syment sym;
2302 		bfd_size_type amt = bfd_coff_symesz (abfd);
2303 
2304 		buf = bfd_malloc (amt);
2305 		if (buf == NULL)
2306 		  return FALSE;
2307 		if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
2308 		    || bfd_bread (buf, amt, abfd) != amt)
2309 		  {
2310 		    free (buf);
2311 		    return FALSE;
2312 		  }
2313 		bfd_coff_swap_sym_in (abfd, buf, & sym);
2314 		if (sym.n_sclass == C_FILE)
2315 		  cputype = sym.n_type & 0xff;
2316 		else
2317 		  cputype = 0;
2318 		free (buf);
2319 	      }
2320 	  }
2321 
2322 	/* FIXME: We don't handle all cases here.  */
2323 	switch (cputype)
2324 	  {
2325 	  default:
2326 	  case 0:
2327 	    arch = bfd_xcoff_architecture (abfd);
2328 	    machine = bfd_xcoff_machine (abfd);
2329 	    break;
2330 
2331 	  case 1:
2332 	    arch = bfd_arch_powerpc;
2333 	    machine = bfd_mach_ppc_601;
2334 	    break;
2335 	  case 2: /* 64 bit PowerPC */
2336 	    arch = bfd_arch_powerpc;
2337 	    machine = bfd_mach_ppc_620;
2338 	    break;
2339 	  case 3:
2340 	    arch = bfd_arch_powerpc;
2341 	    machine = bfd_mach_ppc;
2342 	    break;
2343 	  case 4:
2344 	    arch = bfd_arch_rs6000;
2345 	    machine = bfd_mach_rs6k;
2346 	    break;
2347 	  }
2348       }
2349       break;
2350 #endif
2351 
2352 #ifdef WE32KMAGIC
2353     case WE32KMAGIC:
2354       arch = bfd_arch_we32k;
2355       break;
2356 #endif
2357 
2358 #ifdef H8300MAGIC
2359     case H8300MAGIC:
2360       arch = bfd_arch_h8300;
2361       machine = bfd_mach_h8300;
2362       /* !! FIXME this probably isn't the right place for this.  */
2363       abfd->flags |= BFD_IS_RELAXABLE;
2364       break;
2365 #endif
2366 
2367 #ifdef H8300HMAGIC
2368     case H8300HMAGIC:
2369       arch = bfd_arch_h8300;
2370       machine = bfd_mach_h8300h;
2371       /* !! FIXME this probably isn't the right place for this.  */
2372       abfd->flags |= BFD_IS_RELAXABLE;
2373       break;
2374 #endif
2375 
2376 #ifdef H8300SMAGIC
2377     case H8300SMAGIC:
2378       arch = bfd_arch_h8300;
2379       machine = bfd_mach_h8300s;
2380       /* !! FIXME this probably isn't the right place for this.  */
2381       abfd->flags |= BFD_IS_RELAXABLE;
2382       break;
2383 #endif
2384 
2385 #ifdef H8300HNMAGIC
2386     case H8300HNMAGIC:
2387       arch = bfd_arch_h8300;
2388       machine = bfd_mach_h8300hn;
2389       /* !! FIXME this probably isn't the right place for this.  */
2390       abfd->flags |= BFD_IS_RELAXABLE;
2391       break;
2392 #endif
2393 
2394 #ifdef H8300SNMAGIC
2395     case H8300SNMAGIC:
2396       arch = bfd_arch_h8300;
2397       machine = bfd_mach_h8300sn;
2398       /* !! FIXME this probably isn't the right place for this.  */
2399       abfd->flags |= BFD_IS_RELAXABLE;
2400       break;
2401 #endif
2402 
2403 #ifdef SH_ARCH_MAGIC_BIG
2404     case SH_ARCH_MAGIC_BIG:
2405     case SH_ARCH_MAGIC_LITTLE:
2406 #ifdef COFF_WITH_PE
2407     case SH_ARCH_MAGIC_WINCE:
2408 #endif
2409       arch = bfd_arch_sh;
2410       break;
2411 #endif
2412 
2413 #ifdef MIPS_ARCH_MAGIC_WINCE
2414     case MIPS_ARCH_MAGIC_WINCE:
2415       arch = bfd_arch_mips;
2416       break;
2417 #endif
2418 
2419 #ifdef H8500MAGIC
2420     case H8500MAGIC:
2421       arch = bfd_arch_h8500;
2422       break;
2423 #endif
2424 
2425 #ifdef SPARCMAGIC
2426     case SPARCMAGIC:
2427 #ifdef LYNXCOFFMAGIC
2428     case LYNXCOFFMAGIC:
2429 #endif
2430       arch = bfd_arch_sparc;
2431       break;
2432 #endif
2433 
2434 #ifdef TIC30MAGIC
2435     case TIC30MAGIC:
2436       arch = bfd_arch_tic30;
2437       break;
2438 #endif
2439 
2440 #ifdef TICOFF0MAGIC
2441 #ifdef TICOFF_TARGET_ARCH
2442       /* This TI COFF section should be used by all new TI COFF v0 targets.  */
2443     case TICOFF0MAGIC:
2444       arch = TICOFF_TARGET_ARCH;
2445       machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2446       break;
2447 #endif
2448 #endif
2449 
2450 #ifdef TICOFF1MAGIC
2451       /* This TI COFF section should be used by all new TI COFF v1/2 targets.  */
2452       /* TI COFF1 and COFF2 use the target_id field to specify which arch.  */
2453     case TICOFF1MAGIC:
2454     case TICOFF2MAGIC:
2455       switch (internal_f->f_target_id)
2456 	{
2457 #ifdef TI_TARGET_ID
2458 	case TI_TARGET_ID:
2459 	  arch = TICOFF_TARGET_ARCH;
2460 	  machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags);
2461 	  break;
2462 #endif
2463 	default:
2464 	  arch = bfd_arch_obscure;
2465 	  _bfd_error_handler
2466 	    (_("Unrecognized TI COFF target id '0x%x'"),
2467 	     internal_f->f_target_id);
2468 	  break;
2469 	}
2470       break;
2471 #endif
2472 
2473 #ifdef TIC80_ARCH_MAGIC
2474     case TIC80_ARCH_MAGIC:
2475       arch = bfd_arch_tic80;
2476       break;
2477 #endif
2478 
2479 #ifdef MCOREMAGIC
2480     case MCOREMAGIC:
2481       arch = bfd_arch_mcore;
2482       break;
2483 #endif
2484 
2485 #ifdef W65MAGIC
2486     case W65MAGIC:
2487       arch = bfd_arch_w65;
2488       break;
2489 #endif
2490 
2491     default:			/* Unreadable input file type.  */
2492       arch = bfd_arch_obscure;
2493       break;
2494     }
2495 
2496   bfd_default_set_arch_mach (abfd, arch, machine);
2497   return TRUE;
2498 }
2499 
2500 #ifdef SYMNAME_IN_DEBUG
2501 
2502 static bfd_boolean
symname_in_debug_hook(bfd * abfd ATTRIBUTE_UNUSED,struct internal_syment * sym)2503 symname_in_debug_hook (bfd * abfd ATTRIBUTE_UNUSED, struct internal_syment *sym)
2504 {
2505   return SYMNAME_IN_DEBUG (sym) != 0;
2506 }
2507 
2508 #else
2509 
2510 #define symname_in_debug_hook \
2511   (bfd_boolean (*) (bfd *, struct internal_syment *)) bfd_false
2512 
2513 #endif
2514 
2515 #ifdef RS6000COFF_C
2516 
2517 #ifdef XCOFF64
2518 #define FORCE_SYMNAMES_IN_STRINGS
2519 #endif
2520 
2521 /* Handle the csect auxent of a C_EXT, C_AIX_WEAKEXT or C_HIDEXT symbol.  */
2522 
2523 static bfd_boolean
coff_pointerize_aux_hook(bfd * abfd ATTRIBUTE_UNUSED,combined_entry_type * table_base,combined_entry_type * symbol,unsigned int indaux,combined_entry_type * aux)2524 coff_pointerize_aux_hook (bfd *abfd ATTRIBUTE_UNUSED,
2525 			  combined_entry_type *table_base,
2526 			  combined_entry_type *symbol,
2527 			  unsigned int indaux,
2528 			  combined_entry_type *aux)
2529 {
2530   BFD_ASSERT (symbol->is_sym);
2531   int n_sclass = symbol->u.syment.n_sclass;
2532 
2533   if (CSECT_SYM_P (n_sclass)
2534       && indaux + 1 == symbol->u.syment.n_numaux)
2535     {
2536       BFD_ASSERT (! aux->is_sym);
2537       if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
2538 	{
2539 	  aux->u.auxent.x_csect.x_scnlen.p =
2540 	    table_base + aux->u.auxent.x_csect.x_scnlen.l;
2541 	  aux->fix_scnlen = 1;
2542 	}
2543 
2544       /* Return TRUE to indicate that the caller should not do any
2545 	 further work on this auxent.  */
2546       return TRUE;
2547     }
2548 
2549   /* Return FALSE to indicate that this auxent should be handled by
2550      the caller.  */
2551   return FALSE;
2552 }
2553 
2554 #else
2555 #ifdef I960
2556 
2557 /* We don't want to pointerize bal entries.  */
2558 
2559 static bfd_boolean
coff_pointerize_aux_hook(bfd * abfd ATTRIBUTE_UNUSED,combined_entry_type * table_base ATTRIBUTE_UNUSED,combined_entry_type * symbol,unsigned int indaux,combined_entry_type * aux ATTRIBUTE_UNUSED)2560 coff_pointerize_aux_hook (bfd *abfd ATTRIBUTE_UNUSED,
2561 			  combined_entry_type *table_base ATTRIBUTE_UNUSED,
2562 			  combined_entry_type *symbol,
2563 			  unsigned int indaux,
2564 			  combined_entry_type *aux ATTRIBUTE_UNUSED)
2565 {
2566   /* Return TRUE if we don't want to pointerize this aux entry, which
2567      is the case for the lastfirst aux entry for a C_LEAFPROC symbol.  */
2568   return (indaux == 1
2569 	  && symbol->is_sym
2570 	  && (symbol->u.syment.n_sclass == C_LEAFPROC
2571 	      || symbol->u.syment.n_sclass == C_LEAFSTAT
2572 	      || symbol->u.syment.n_sclass == C_LEAFEXT));
2573 }
2574 
2575 #else /* ! I960 */
2576 
2577 #define coff_pointerize_aux_hook 0
2578 
2579 #endif /* ! I960 */
2580 #endif /* ! RS6000COFF_C */
2581 
2582 /* Print an aux entry.  This returns TRUE if it has printed it.  */
2583 
2584 static bfd_boolean
coff_print_aux(bfd * abfd ATTRIBUTE_UNUSED,FILE * file ATTRIBUTE_UNUSED,combined_entry_type * table_base ATTRIBUTE_UNUSED,combined_entry_type * symbol ATTRIBUTE_UNUSED,combined_entry_type * aux ATTRIBUTE_UNUSED,unsigned int indaux ATTRIBUTE_UNUSED)2585 coff_print_aux (bfd *abfd ATTRIBUTE_UNUSED,
2586 		FILE *file ATTRIBUTE_UNUSED,
2587 		combined_entry_type *table_base ATTRIBUTE_UNUSED,
2588 		combined_entry_type *symbol ATTRIBUTE_UNUSED,
2589 		combined_entry_type *aux ATTRIBUTE_UNUSED,
2590 		unsigned int indaux ATTRIBUTE_UNUSED)
2591 {
2592   BFD_ASSERT (symbol->is_sym);
2593   BFD_ASSERT (! aux->is_sym);
2594 #ifdef RS6000COFF_C
2595   if (CSECT_SYM_P (symbol->u.syment.n_sclass)
2596       && indaux + 1 == symbol->u.syment.n_numaux)
2597     {
2598       /* This is a csect entry.  */
2599       fprintf (file, "AUX ");
2600       if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD)
2601 	{
2602 	  BFD_ASSERT (! aux->fix_scnlen);
2603 	  fprintf (file, "val %5" BFD_VMA_FMT "d",
2604 		   aux->u.auxent.x_csect.x_scnlen.l);
2605 	}
2606       else
2607 	{
2608 	  fprintf (file, "indx ");
2609 	  if (! aux->fix_scnlen)
2610 	    fprintf (file, "%4" BFD_VMA_FMT "d",
2611 		     aux->u.auxent.x_csect.x_scnlen.l);
2612 	  else
2613 	    fprintf (file, "%4ld",
2614 		     (long) (aux->u.auxent.x_csect.x_scnlen.p - table_base));
2615 	}
2616       fprintf (file,
2617 	       " prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u",
2618 	       aux->u.auxent.x_csect.x_parmhash,
2619 	       (unsigned int) aux->u.auxent.x_csect.x_snhash,
2620 	       SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp),
2621 	       SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp),
2622 	       (unsigned int) aux->u.auxent.x_csect.x_smclas,
2623 	       aux->u.auxent.x_csect.x_stab,
2624 	       (unsigned int) aux->u.auxent.x_csect.x_snstab);
2625       return TRUE;
2626     }
2627 #endif
2628 
2629   /* Return FALSE to indicate that no special action was taken.  */
2630   return FALSE;
2631 }
2632 
2633 /*
2634 SUBSUBSECTION
2635 	Writing relocations
2636 
2637 	To write relocations, the back end steps though the
2638 	canonical relocation table and create an
2639 	@code{internal_reloc}. The symbol index to use is removed from
2640 	the @code{offset} field in the symbol table supplied.  The
2641 	address comes directly from the sum of the section base
2642 	address and the relocation offset; the type is dug directly
2643 	from the howto field.  Then the @code{internal_reloc} is
2644 	swapped into the shape of an @code{external_reloc} and written
2645 	out to disk.
2646 
2647 */
2648 
2649 #ifdef TARG_AUX
2650 
2651 
2652 /* AUX's ld wants relocations to be sorted.  */
2653 static int
compare_arelent_ptr(const void * x,const void * y)2654 compare_arelent_ptr (const void * x, const void * y)
2655 {
2656   const arelent **a = (const arelent **) x;
2657   const arelent **b = (const arelent **) y;
2658   bfd_size_type aadr = (*a)->address;
2659   bfd_size_type badr = (*b)->address;
2660 
2661   return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
2662 }
2663 
2664 #endif /* TARG_AUX */
2665 
2666 static bfd_boolean
coff_write_relocs(bfd * abfd,int first_undef)2667 coff_write_relocs (bfd * abfd, int first_undef)
2668 {
2669   asection *s;
2670 
2671   for (s = abfd->sections; s != NULL; s = s->next)
2672     {
2673       unsigned int i;
2674       struct external_reloc dst;
2675       arelent **p;
2676 
2677 #ifndef TARG_AUX
2678       p = s->orelocation;
2679 #else
2680       {
2681 	/* Sort relocations before we write them out.  */
2682 	bfd_size_type amt;
2683 
2684 	amt = s->reloc_count;
2685 	amt *= sizeof (arelent *);
2686 	p = bfd_malloc (amt);
2687 	if (p == NULL)
2688 	  {
2689 	    if (s->reloc_count > 0)
2690 	      return FALSE;
2691 	  }
2692 	else
2693 	  {
2694 	    memcpy (p, s->orelocation, (size_t) amt);
2695 	    qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr);
2696 	  }
2697       }
2698 #endif
2699 
2700       if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
2701 	return FALSE;
2702 
2703 #ifdef COFF_WITH_PE
2704       if (obj_pe (abfd) && s->reloc_count >= 0xffff)
2705 	{
2706 	  /* Encode real count here as first reloc.  */
2707 	  struct internal_reloc n;
2708 
2709 	  memset (& n, 0, sizeof (n));
2710 	  /* Add one to count *this* reloc (grr).  */
2711 	  n.r_vaddr = s->reloc_count + 1;
2712 	  coff_swap_reloc_out (abfd, &n, &dst);
2713 	  if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd),
2714 			  abfd) != bfd_coff_relsz (abfd))
2715 	    return FALSE;
2716 	}
2717 #endif
2718 
2719       for (i = 0; i < s->reloc_count; i++)
2720 	{
2721 	  struct internal_reloc n;
2722 	  arelent *q = p[i];
2723 
2724 	  memset (& n, 0, sizeof (n));
2725 
2726 	  /* Now we've renumbered the symbols we know where the
2727 	     undefined symbols live in the table.  Check the reloc
2728 	     entries for symbols who's output bfd isn't the right one.
2729 	     This is because the symbol was undefined (which means
2730 	     that all the pointers are never made to point to the same
2731 	     place). This is a bad thing,'cause the symbols attached
2732 	     to the output bfd are indexed, so that the relocation
2733 	     entries know which symbol index they point to.  So we
2734 	     have to look up the output symbol here.  */
2735 
2736 	  if (q->sym_ptr_ptr[0] != NULL && q->sym_ptr_ptr[0]->the_bfd != abfd)
2737 	    {
2738 	      int j;
2739 	      const char *sname = q->sym_ptr_ptr[0]->name;
2740 	      asymbol **outsyms = abfd->outsymbols;
2741 
2742 	      for (j = first_undef; outsyms[j]; j++)
2743 		{
2744 		  const char *intable = outsyms[j]->name;
2745 
2746 		  if (strcmp (intable, sname) == 0)
2747 		    {
2748 		      /* Got a hit, so repoint the reloc.  */
2749 		      q->sym_ptr_ptr = outsyms + j;
2750 		      break;
2751 		    }
2752 		}
2753 	    }
2754 
2755 	  n.r_vaddr = q->address + s->vma;
2756 
2757 #ifdef R_IHCONST
2758 	  /* The 29k const/consth reloc pair is a real kludge.  The consth
2759 	     part doesn't have a symbol; it has an offset.  So rebuilt
2760 	     that here.  */
2761 	  if (q->howto->type == R_IHCONST)
2762 	    n.r_symndx = q->addend;
2763 	  else
2764 #endif
2765 	    if (q->sym_ptr_ptr && q->sym_ptr_ptr[0] != NULL)
2766 	      {
2767 #ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P
2768 		if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q, s))
2769 #else
2770 		if ((*q->sym_ptr_ptr)->section == bfd_abs_section_ptr
2771 		    && ((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0)
2772 #endif
2773 		  /* This is a relocation relative to the absolute symbol.  */
2774 		  n.r_symndx = -1;
2775 		else
2776 		  {
2777 		    n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
2778 		    /* Check to see if the symbol reloc points to a symbol
2779 		       we don't have in our symbol table.  */
2780 		    if (n.r_symndx > obj_conv_table_size (abfd))
2781 		      {
2782 			bfd_set_error (bfd_error_bad_value);
2783 			/* xgettext:c-format */
2784 			_bfd_error_handler (_("%B: reloc against a non-existent"
2785 					      " symbol index: %ld"),
2786 					    abfd, n.r_symndx);
2787 			return FALSE;
2788 		      }
2789 		  }
2790 	      }
2791 
2792 #ifdef SWAP_OUT_RELOC_OFFSET
2793 	  n.r_offset = q->addend;
2794 #endif
2795 
2796 #ifdef SELECT_RELOC
2797 	  /* Work out reloc type from what is required.  */
2798 	  SELECT_RELOC (n, q->howto);
2799 #else
2800 	  n.r_type = q->howto->type;
2801 #endif
2802 	  coff_swap_reloc_out (abfd, &n, &dst);
2803 
2804 	  if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd),
2805 			 abfd) != bfd_coff_relsz (abfd))
2806 	    return FALSE;
2807 	}
2808 
2809 #ifdef TARG_AUX
2810       if (p != NULL)
2811 	free (p);
2812 #endif
2813     }
2814 
2815   return TRUE;
2816 }
2817 
2818 /* Set flags and magic number of a coff file from architecture and machine
2819    type.  Result is TRUE if we can represent the arch&type, FALSE if not.  */
2820 
2821 static bfd_boolean
coff_set_flags(bfd * abfd,unsigned int * magicp ATTRIBUTE_UNUSED,unsigned short * flagsp ATTRIBUTE_UNUSED)2822 coff_set_flags (bfd * abfd,
2823 		unsigned int *magicp ATTRIBUTE_UNUSED,
2824 		unsigned short *flagsp ATTRIBUTE_UNUSED)
2825 {
2826   switch (bfd_get_arch (abfd))
2827     {
2828 #ifdef Z80MAGIC
2829     case bfd_arch_z80:
2830       *magicp = Z80MAGIC;
2831       switch (bfd_get_mach (abfd))
2832 	{
2833 	case 0:
2834 	case bfd_mach_z80strict:
2835 	case bfd_mach_z80:
2836 	case bfd_mach_z80full:
2837 	case bfd_mach_r800:
2838 	  *flagsp = bfd_get_mach (abfd) << 12;
2839 	  break;
2840 	default:
2841 	  return FALSE;
2842 	}
2843       return TRUE;
2844 #endif
2845 
2846 #ifdef Z8KMAGIC
2847     case bfd_arch_z8k:
2848       *magicp = Z8KMAGIC;
2849 
2850       switch (bfd_get_mach (abfd))
2851 	{
2852 	case bfd_mach_z8001: *flagsp = F_Z8001;	break;
2853 	case bfd_mach_z8002: *flagsp = F_Z8002;	break;
2854 	default:	     return FALSE;
2855 	}
2856       return TRUE;
2857 #endif
2858 
2859 #ifdef I960ROMAGIC
2860     case bfd_arch_i960:
2861 
2862       {
2863 	unsigned flags;
2864 
2865 	*magicp = I960ROMAGIC;
2866 
2867 	switch (bfd_get_mach (abfd))
2868 	  {
2869 	  case bfd_mach_i960_core:  flags = F_I960CORE; break;
2870 	  case bfd_mach_i960_kb_sb: flags = F_I960KB;	break;
2871 	  case bfd_mach_i960_mc:    flags = F_I960MC;	break;
2872 	  case bfd_mach_i960_xa:    flags = F_I960XA;	break;
2873 	  case bfd_mach_i960_ca:    flags = F_I960CA;	break;
2874 	  case bfd_mach_i960_ka_sa: flags = F_I960KA;	break;
2875 	  case bfd_mach_i960_jx:    flags = F_I960JX;	break;
2876 	  case bfd_mach_i960_hx:    flags = F_I960HX;	break;
2877 	  default:		    return FALSE;
2878 	  }
2879 	*flagsp = flags;
2880 	return TRUE;
2881       }
2882       break;
2883 #endif
2884 
2885 #ifdef TIC30MAGIC
2886     case bfd_arch_tic30:
2887       *magicp = TIC30MAGIC;
2888       return TRUE;
2889 #endif
2890 
2891 #ifdef TICOFF_DEFAULT_MAGIC
2892     case TICOFF_TARGET_ARCH:
2893       /* If there's no indication of which version we want, use the default.  */
2894       if (!abfd->xvec )
2895 	*magicp = TICOFF_DEFAULT_MAGIC;
2896       else
2897 	{
2898 	  /* We may want to output in a different COFF version.  */
2899 	  switch (abfd->xvec->name[4])
2900 	    {
2901 	    case '0':
2902 	      *magicp = TICOFF0MAGIC;
2903 	      break;
2904 	    case '1':
2905 	      *magicp = TICOFF1MAGIC;
2906 	      break;
2907 	    case '2':
2908 	      *magicp = TICOFF2MAGIC;
2909 	      break;
2910 	    default:
2911 	      return FALSE;
2912 	    }
2913 	}
2914       TICOFF_TARGET_MACHINE_SET (flagsp, bfd_get_mach (abfd));
2915       return TRUE;
2916 #endif
2917 
2918 #ifdef TIC80_ARCH_MAGIC
2919     case bfd_arch_tic80:
2920       *magicp = TIC80_ARCH_MAGIC;
2921       return TRUE;
2922 #endif
2923 
2924 #ifdef ARMMAGIC
2925     case bfd_arch_arm:
2926 #ifdef ARM_WINCE
2927       * magicp = ARMPEMAGIC;
2928 #else
2929       * magicp = ARMMAGIC;
2930 #endif
2931       * flagsp = 0;
2932       if (APCS_SET (abfd))
2933 	{
2934 	  if (APCS_26_FLAG (abfd))
2935 	    * flagsp |= F_APCS26;
2936 
2937 	  if (APCS_FLOAT_FLAG (abfd))
2938 	    * flagsp |= F_APCS_FLOAT;
2939 
2940 	  if (PIC_FLAG (abfd))
2941 	    * flagsp |= F_PIC;
2942 	}
2943       if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd))
2944 	* flagsp |= F_INTERWORK;
2945       switch (bfd_get_mach (abfd))
2946 	{
2947 	case bfd_mach_arm_2:  * flagsp |= F_ARM_2;  break;
2948 	case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break;
2949 	case bfd_mach_arm_3:  * flagsp |= F_ARM_3;  break;
2950 	case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break;
2951 	case bfd_mach_arm_4:  * flagsp |= F_ARM_4;  break;
2952 	case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break;
2953 	case bfd_mach_arm_5:  * flagsp |= F_ARM_5;  break;
2954 	  /* FIXME: we do not have F_ARM vaues greater than F_ARM_5.
2955 	     See also the comment in coff_set_arch_mach_hook().  */
2956 	case bfd_mach_arm_5T: * flagsp |= F_ARM_5;  break;
2957 	case bfd_mach_arm_5TE: * flagsp |= F_ARM_5; break;
2958 	case bfd_mach_arm_XScale: * flagsp |= F_ARM_5; break;
2959 	}
2960       return TRUE;
2961 #endif
2962 
2963 #ifdef PPCMAGIC
2964     case bfd_arch_powerpc:
2965       *magicp = PPCMAGIC;
2966       return TRUE;
2967 #endif
2968 
2969 #if defined(I386MAGIC) || defined(AMD64MAGIC)
2970     case bfd_arch_i386:
2971 #if defined(I386MAGIC)
2972       *magicp = I386MAGIC;
2973 #endif
2974 #if defined LYNXOS
2975       /* Just overwrite the usual value if we're doing Lynx.  */
2976       *magicp = LYNXCOFFMAGIC;
2977 #endif
2978 #if defined AMD64MAGIC
2979       *magicp = AMD64MAGIC;
2980 #endif
2981       return TRUE;
2982 #endif
2983 
2984 #ifdef I860MAGIC
2985     case bfd_arch_i860:
2986       *magicp = I860MAGIC;
2987       return TRUE;
2988 #endif
2989 
2990 #ifdef IA64MAGIC
2991     case bfd_arch_ia64:
2992       *magicp = IA64MAGIC;
2993       return TRUE;
2994 #endif
2995 
2996 #ifdef MC68MAGIC
2997     case bfd_arch_m68k:
2998 #ifdef APOLLOM68KMAGIC
2999       *magicp = APOLLO_COFF_VERSION_NUMBER;
3000 #else
3001       /* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c.  */
3002 #ifdef NAMES_HAVE_UNDERSCORE
3003       *magicp = MC68KBCSMAGIC;
3004 #else
3005       *magicp = MC68MAGIC;
3006 #endif
3007 #endif
3008 #ifdef LYNXOS
3009       /* Just overwrite the usual value if we're doing Lynx.  */
3010       *magicp = LYNXCOFFMAGIC;
3011 #endif
3012       return TRUE;
3013 #endif
3014 
3015 #ifdef MC88MAGIC
3016     case bfd_arch_m88k:
3017       *magicp = MC88OMAGIC;
3018       return TRUE;
3019 #endif
3020 
3021 #ifdef H8300MAGIC
3022     case bfd_arch_h8300:
3023       switch (bfd_get_mach (abfd))
3024 	{
3025 	case bfd_mach_h8300:   *magicp = H8300MAGIC;   return TRUE;
3026 	case bfd_mach_h8300h:  *magicp = H8300HMAGIC;  return TRUE;
3027 	case bfd_mach_h8300s:  *magicp = H8300SMAGIC;  return TRUE;
3028 	case bfd_mach_h8300hn: *magicp = H8300HNMAGIC; return TRUE;
3029 	case bfd_mach_h8300sn: *magicp = H8300SNMAGIC; return TRUE;
3030 	default: break;
3031 	}
3032       break;
3033 #endif
3034 
3035 #ifdef SH_ARCH_MAGIC_BIG
3036     case bfd_arch_sh:
3037 #ifdef COFF_IMAGE_WITH_PE
3038       *magicp = SH_ARCH_MAGIC_WINCE;
3039 #else
3040       if (bfd_big_endian (abfd))
3041 	*magicp = SH_ARCH_MAGIC_BIG;
3042       else
3043 	*magicp = SH_ARCH_MAGIC_LITTLE;
3044 #endif
3045       return TRUE;
3046 #endif
3047 
3048 #ifdef MIPS_ARCH_MAGIC_WINCE
3049     case bfd_arch_mips:
3050       *magicp = MIPS_ARCH_MAGIC_WINCE;
3051       return TRUE;
3052 #endif
3053 
3054 #ifdef SPARCMAGIC
3055     case bfd_arch_sparc:
3056       *magicp = SPARCMAGIC;
3057 #ifdef LYNXOS
3058       /* Just overwrite the usual value if we're doing Lynx.  */
3059       *magicp = LYNXCOFFMAGIC;
3060 #endif
3061       return TRUE;
3062 #endif
3063 
3064 #ifdef H8500MAGIC
3065     case bfd_arch_h8500:
3066       *magicp = H8500MAGIC;
3067       return TRUE;
3068       break;
3069 #endif
3070 
3071 #ifdef WE32KMAGIC
3072     case bfd_arch_we32k:
3073       *magicp = WE32KMAGIC;
3074       return TRUE;
3075 #endif
3076 
3077 #ifdef RS6000COFF_C
3078     case bfd_arch_rs6000:
3079 #ifndef PPCMAGIC
3080     case bfd_arch_powerpc:
3081 #endif
3082       BFD_ASSERT (bfd_get_flavour (abfd) == bfd_target_xcoff_flavour);
3083       *magicp = bfd_xcoff_magic_number (abfd);
3084       return TRUE;
3085 #endif
3086 
3087 #ifdef MCOREMAGIC
3088     case bfd_arch_mcore:
3089       * magicp = MCOREMAGIC;
3090       return TRUE;
3091 #endif
3092 
3093 #ifdef W65MAGIC
3094     case bfd_arch_w65:
3095       *magicp = W65MAGIC;
3096       return TRUE;
3097 #endif
3098 
3099     default:			/* Unknown architecture.  */
3100       /* Fall through to "return FALSE" below, to avoid
3101 	 "statement never reached" errors on the one below.  */
3102       break;
3103     }
3104 
3105   return FALSE;
3106 }
3107 
3108 static bfd_boolean
coff_set_arch_mach(bfd * abfd,enum bfd_architecture arch,unsigned long machine)3109 coff_set_arch_mach (bfd * abfd,
3110 		    enum bfd_architecture arch,
3111 		    unsigned long machine)
3112 {
3113   unsigned dummy1;
3114   unsigned short dummy2;
3115 
3116   if (! bfd_default_set_arch_mach (abfd, arch, machine))
3117     return FALSE;
3118 
3119   if (arch != bfd_arch_unknown
3120       && ! coff_set_flags (abfd, &dummy1, &dummy2))
3121     return FALSE;		/* We can't represent this type.  */
3122 
3123   return TRUE;			/* We're easy...  */
3124 }
3125 
3126 #ifdef COFF_IMAGE_WITH_PE
3127 
3128 /* This is used to sort sections by VMA, as required by PE image
3129    files.  */
3130 
3131 static int
sort_by_secaddr(const void * arg1,const void * arg2)3132 sort_by_secaddr (const void * arg1, const void * arg2)
3133 {
3134   const asection *a = *(const asection **) arg1;
3135   const asection *b = *(const asection **) arg2;
3136 
3137   if (a->vma < b->vma)
3138     return -1;
3139   else if (a->vma > b->vma)
3140     return 1;
3141 
3142   return 0;
3143 }
3144 
3145 #endif /* COFF_IMAGE_WITH_PE */
3146 
3147 /* Calculate the file position for each section.  */
3148 
3149 #ifndef I960
3150 #define ALIGN_SECTIONS_IN_FILE
3151 #endif
3152 #if defined(TIC80COFF) || defined(TICOFF)
3153 #undef ALIGN_SECTIONS_IN_FILE
3154 #endif
3155 
3156 static bfd_boolean
coff_compute_section_file_positions(bfd * abfd)3157 coff_compute_section_file_positions (bfd * abfd)
3158 {
3159   asection *current;
3160   file_ptr sofar = bfd_coff_filhsz (abfd);
3161   bfd_boolean align_adjust;
3162   unsigned int target_index;
3163 #ifdef ALIGN_SECTIONS_IN_FILE
3164   asection *previous = NULL;
3165   file_ptr old_sofar;
3166 #endif
3167 
3168 #ifdef COFF_IMAGE_WITH_PE
3169   int page_size;
3170 
3171   if (coff_data (abfd)->link_info
3172       || (pe_data (abfd) && pe_data (abfd)->pe_opthdr.FileAlignment))
3173     {
3174       page_size = pe_data (abfd)->pe_opthdr.FileAlignment;
3175 
3176       /* If no file alignment has been set, default to one.
3177 	 This repairs 'ld -r' for arm-wince-pe target.  */
3178       if (page_size == 0)
3179 	page_size = 1;
3180 
3181       /* PR 17512: file: 0ac816d3.  */
3182       if (page_size < 0)
3183 	{
3184 	  bfd_set_error (bfd_error_file_too_big);
3185 	  _bfd_error_handler
3186 	    /* xgettext:c-format */
3187 	    (_("%B: page size is too large (0x%x)"), abfd, page_size);
3188 	  return FALSE;
3189 	}
3190     }
3191   else
3192     page_size = PE_DEF_FILE_ALIGNMENT;
3193 #else
3194 #ifdef COFF_PAGE_SIZE
3195   int page_size = COFF_PAGE_SIZE;
3196 #endif
3197 #endif
3198 
3199 #ifdef RS6000COFF_C
3200   /* On XCOFF, if we have symbols, set up the .debug section.  */
3201   if (bfd_get_symcount (abfd) > 0)
3202     {
3203       bfd_size_type sz;
3204       bfd_size_type i, symcount;
3205       asymbol **symp;
3206 
3207       sz = 0;
3208       symcount = bfd_get_symcount (abfd);
3209       for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++)
3210 	{
3211 	  coff_symbol_type *cf;
3212 
3213 	  cf = coff_symbol_from (*symp);
3214 	  if (cf != NULL
3215 	      && cf->native != NULL
3216 	      && cf->native->is_sym
3217 	      && SYMNAME_IN_DEBUG (&cf->native->u.syment))
3218 	    {
3219 	      size_t len;
3220 
3221 	      len = strlen (bfd_asymbol_name (*symp));
3222 	      if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd))
3223 		sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd);
3224 	    }
3225 	}
3226       if (sz > 0)
3227 	{
3228 	  asection *dsec;
3229 
3230 	  dsec = bfd_make_section_old_way (abfd, DOT_DEBUG);
3231 	  if (dsec == NULL)
3232 	    abort ();
3233 	  dsec->size = sz;
3234 	  dsec->flags |= SEC_HAS_CONTENTS;
3235 	}
3236     }
3237 #endif
3238 
3239   if (bfd_get_start_address (abfd))
3240     /*  A start address may have been added to the original file. In this
3241 	case it will need an optional header to record it.  */
3242     abfd->flags |= EXEC_P;
3243 
3244   if (abfd->flags & EXEC_P)
3245     sofar += bfd_coff_aoutsz (abfd);
3246 #ifdef RS6000COFF_C
3247   else if (xcoff_data (abfd)->full_aouthdr)
3248     sofar += bfd_coff_aoutsz (abfd);
3249   else
3250     sofar += SMALL_AOUTSZ;
3251 #endif
3252 
3253   sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
3254 
3255 #ifdef RS6000COFF_C
3256   /* XCOFF handles overflows in the reloc and line number count fields
3257      by allocating a new section header to hold the correct counts.  */
3258   for (current = abfd->sections; current != NULL; current = current->next)
3259     if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3260       sofar += bfd_coff_scnhsz (abfd);
3261 #endif
3262 
3263 #ifdef COFF_IMAGE_WITH_PE
3264   {
3265     /* PE requires the sections to be in memory order when listed in
3266        the section headers.  It also does not like empty loadable
3267        sections.  The sections apparently do not have to be in the
3268        right order in the image file itself, but we do need to get the
3269        target_index values right.  */
3270 
3271     unsigned int count;
3272     asection **section_list;
3273     unsigned int i;
3274     bfd_size_type amt;
3275 
3276 #ifdef COFF_PAGE_SIZE
3277     /* Clear D_PAGED if section alignment is smaller than
3278        COFF_PAGE_SIZE.  */
3279    if (pe_data (abfd)->pe_opthdr.SectionAlignment < COFF_PAGE_SIZE)
3280      abfd->flags &= ~D_PAGED;
3281 #endif
3282 
3283     count = 0;
3284     for (current = abfd->sections; current != NULL; current = current->next)
3285       ++count;
3286 
3287     /* We allocate an extra cell to simplify the final loop.  */
3288     amt = sizeof (struct asection *) * (count + 1);
3289     section_list = (asection **) bfd_malloc (amt);
3290     if (section_list == NULL)
3291       return FALSE;
3292 
3293     i = 0;
3294     for (current = abfd->sections; current != NULL; current = current->next)
3295       {
3296 	section_list[i] = current;
3297 	++i;
3298       }
3299     section_list[i] = NULL;
3300 
3301     qsort (section_list, count, sizeof (asection *), sort_by_secaddr);
3302 
3303     /* Rethread the linked list into sorted order; at the same time,
3304        assign target_index values.  */
3305     target_index = 1;
3306     abfd->sections = NULL;
3307     abfd->section_last = NULL;
3308     for (i = 0; i < count; i++)
3309       {
3310 	current = section_list[i];
3311 	bfd_section_list_append (abfd, current);
3312 
3313 	/* Later, if the section has zero size, we'll be throwing it
3314 	   away, so we don't want to number it now.  Note that having
3315 	   a zero size and having real contents are different
3316 	   concepts: .bss has no contents, but (usually) non-zero
3317 	   size.  */
3318 	if (current->size == 0)
3319 	  {
3320 	    /* Discard.  However, it still might have (valid) symbols
3321 	       in it, so arbitrarily set it to section 1 (indexing is
3322 	       1-based here; usually .text).  __end__ and other
3323 	       contents of .endsection really have this happen.
3324 	       FIXME: This seems somewhat dubious.  */
3325 	    current->target_index = 1;
3326 	  }
3327 	else
3328 	  current->target_index = target_index++;
3329       }
3330 
3331     free (section_list);
3332   }
3333 #else /* ! COFF_IMAGE_WITH_PE */
3334   {
3335     /* Set the target_index field.  */
3336     target_index = 1;
3337     for (current = abfd->sections; current != NULL; current = current->next)
3338       current->target_index = target_index++;
3339   }
3340 #endif /* ! COFF_IMAGE_WITH_PE */
3341 
3342   if (target_index >= bfd_coff_max_nscns (abfd))
3343     {
3344       bfd_set_error (bfd_error_file_too_big);
3345       _bfd_error_handler
3346 	/* xgettext:c-format */
3347 	(_("%B: too many sections (%d)"), abfd, target_index);
3348       return FALSE;
3349     }
3350 
3351   align_adjust = FALSE;
3352   for (current = abfd->sections;
3353        current != NULL;
3354        current = current->next)
3355     {
3356 #ifdef COFF_IMAGE_WITH_PE
3357       /* With PE we have to pad each section to be a multiple of its
3358 	 page size too, and remember both sizes.  */
3359       if (coff_section_data (abfd, current) == NULL)
3360 	{
3361 	  bfd_size_type amt = sizeof (struct coff_section_tdata);
3362 
3363 	  current->used_by_bfd = bfd_zalloc (abfd, amt);
3364 	  if (current->used_by_bfd == NULL)
3365 	    return FALSE;
3366 	}
3367       if (pei_section_data (abfd, current) == NULL)
3368 	{
3369 	  bfd_size_type amt = sizeof (struct pei_section_tdata);
3370 
3371 	  coff_section_data (abfd, current)->tdata = bfd_zalloc (abfd, amt);
3372 	  if (coff_section_data (abfd, current)->tdata == NULL)
3373 	    return FALSE;
3374 	}
3375       if (pei_section_data (abfd, current)->virt_size == 0)
3376 	pei_section_data (abfd, current)->virt_size = current->size;
3377 #endif
3378 
3379       /* Only deal with sections which have contents.  */
3380       if (!(current->flags & SEC_HAS_CONTENTS))
3381 	continue;
3382 
3383       current->rawsize = current->size;
3384 
3385 #ifdef COFF_IMAGE_WITH_PE
3386       /* Make sure we skip empty sections in a PE image.  */
3387       if (current->size == 0)
3388 	continue;
3389 #endif
3390 
3391       /* Align the sections in the file to the same boundary on
3392 	 which they are aligned in virtual memory.  I960 doesn't
3393 	 do this (FIXME) so we can stay in sync with Intel.  960
3394 	 doesn't yet page from files...  */
3395 #ifdef ALIGN_SECTIONS_IN_FILE
3396       if ((abfd->flags & EXEC_P) != 0)
3397 	{
3398 	  /* Make sure this section is aligned on the right boundary - by
3399 	     padding the previous section up if necessary.  */
3400 	  old_sofar = sofar;
3401 
3402 	  sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3403 
3404 #ifdef RS6000COFF_C
3405 	  /* Make sure the file offset and the vma of .text/.data are at the
3406 	     same page offset, so that the file can be mmap'ed without being
3407 	     relocated.  Failing that, AIX is able to load and execute the
3408 	     program, but it will be silently relocated (possible as
3409 	     executables are PIE).  But the relocation is slightly costly and
3410 	     complexify the use of addr2line or gdb.  So better to avoid it,
3411 	     like does the native linker.  Usually gnu ld makes sure that
3412 	     the vma of .text is the file offset so this issue shouldn't
3413 	     appear unless you are stripping such an executable.
3414 
3415 	     AIX loader checks the text section alignment of (vma - filepos),
3416 	     and the native linker doesn't try to align the text sections.
3417 	     For example:
3418 
3419 	     0 .text	     000054cc  10000128	 10000128  00000128  2**5
3420 			     CONTENTS, ALLOC, LOAD, CODE
3421 	  */
3422 
3423 	  if (!strcmp (current->name, _TEXT)
3424 	      || !strcmp (current->name, _DATA))
3425 	    {
3426 	      bfd_vma align = 4096;
3427 	      bfd_vma sofar_off = sofar % align;
3428 	      bfd_vma vma_off = current->vma % align;
3429 
3430 	      if (vma_off > sofar_off)
3431 		sofar += vma_off - sofar_off;
3432 	      else if (vma_off < sofar_off)
3433 		sofar += align + vma_off - sofar_off;
3434 	    }
3435 #endif
3436 	  if (previous != NULL)
3437 	    previous->size += sofar - old_sofar;
3438 	}
3439 
3440 #endif
3441 
3442       /* In demand paged files the low order bits of the file offset
3443 	 must match the low order bits of the virtual address.  */
3444 #ifdef COFF_PAGE_SIZE
3445       if ((abfd->flags & D_PAGED) != 0
3446 	  && (current->flags & SEC_ALLOC) != 0)
3447 	sofar += (current->vma - (bfd_vma) sofar) % page_size;
3448 #endif
3449       current->filepos = sofar;
3450 
3451 #ifdef COFF_IMAGE_WITH_PE
3452       /* Set the padded size.  */
3453       current->size = (current->size + page_size - 1) & -page_size;
3454 #endif
3455 
3456       sofar += current->size;
3457 
3458 #ifdef ALIGN_SECTIONS_IN_FILE
3459       /* Make sure that this section is of the right size too.  */
3460       if ((abfd->flags & EXEC_P) == 0)
3461 	{
3462 	  bfd_size_type old_size;
3463 
3464 	  old_size = current->size;
3465 	  current->size = BFD_ALIGN (current->size,
3466 				     1 << current->alignment_power);
3467 	  align_adjust = current->size != old_size;
3468 	  sofar += current->size - old_size;
3469 	}
3470       else
3471 	{
3472 	  old_sofar = sofar;
3473 	  sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
3474 	  align_adjust = sofar != old_sofar;
3475 	  current->size += sofar - old_sofar;
3476 	}
3477 #endif
3478 
3479 #ifdef COFF_IMAGE_WITH_PE
3480       /* For PE we need to make sure we pad out to the aligned
3481 	 size, in case the caller only writes out data to the
3482 	 unaligned size.  */
3483       if (pei_section_data (abfd, current)->virt_size < current->size)
3484 	align_adjust = TRUE;
3485 #endif
3486 
3487 #ifdef _LIB
3488       /* Force .lib sections to start at zero.  The vma is then
3489 	 incremented in coff_set_section_contents.  This is right for
3490 	 SVR3.2.  */
3491       if (strcmp (current->name, _LIB) == 0)
3492 	(void) bfd_set_section_vma (abfd, current, 0);
3493 #endif
3494 
3495 #ifdef ALIGN_SECTIONS_IN_FILE
3496       previous = current;
3497 #endif
3498     }
3499 
3500   /* It is now safe to write to the output file.  If we needed an
3501      alignment adjustment for the last section, then make sure that
3502      there is a byte at offset sofar.  If there are no symbols and no
3503      relocs, then nothing follows the last section.  If we don't force
3504      the last byte out, then the file may appear to be truncated.  */
3505   if (align_adjust)
3506     {
3507       bfd_byte b;
3508 
3509       b = 0;
3510       if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0
3511 	  || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
3512 	return FALSE;
3513     }
3514 
3515   /* Make sure the relocations are aligned.  We don't need to make
3516      sure that this byte exists, because it will only matter if there
3517      really are relocs.  */
3518   sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER);
3519 
3520   obj_relocbase (abfd) = sofar;
3521   abfd->output_has_begun = TRUE;
3522 
3523   return TRUE;
3524 }
3525 
3526 #ifdef COFF_IMAGE_WITH_PE
3527 
3528 static unsigned int pelength;
3529 static unsigned int peheader;
3530 
3531 static bfd_boolean
coff_read_word(bfd * abfd,unsigned int * value)3532 coff_read_word (bfd *abfd, unsigned int *value)
3533 {
3534   unsigned char b[2];
3535   int status;
3536 
3537   status = bfd_bread (b, (bfd_size_type) 2, abfd);
3538   if (status < 1)
3539     {
3540       *value = 0;
3541       return FALSE;
3542     }
3543 
3544   if (status == 1)
3545     *value = (unsigned int) b[0];
3546   else
3547     *value = (unsigned int) (b[0] + (b[1] << 8));
3548 
3549   pelength += (unsigned int) status;
3550 
3551   return TRUE;
3552 }
3553 
3554 static unsigned int
coff_compute_checksum(bfd * abfd)3555 coff_compute_checksum (bfd *abfd)
3556 {
3557   bfd_boolean more_data;
3558   file_ptr filepos;
3559   unsigned int value;
3560   unsigned int total;
3561 
3562   total = 0;
3563   pelength = 0;
3564   filepos = (file_ptr) 0;
3565 
3566   do
3567     {
3568       if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
3569 	return 0;
3570 
3571       more_data = coff_read_word (abfd, &value);
3572       total += value;
3573       total = 0xffff & (total + (total >> 0x10));
3574       filepos += 2;
3575     }
3576   while (more_data);
3577 
3578   return (0xffff & (total + (total >> 0x10)));
3579 }
3580 
3581 static bfd_boolean
coff_apply_checksum(bfd * abfd)3582 coff_apply_checksum (bfd *abfd)
3583 {
3584   unsigned int computed;
3585   unsigned int checksum = 0;
3586 
3587   if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0)
3588     return FALSE;
3589 
3590   if (!coff_read_word (abfd, &peheader))
3591     return FALSE;
3592 
3593   if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3594     return FALSE;
3595 
3596   checksum = 0;
3597   bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3598 
3599   if (bfd_seek (abfd, peheader, SEEK_SET) != 0)
3600     return FALSE;
3601 
3602   computed = coff_compute_checksum (abfd);
3603 
3604   checksum = computed + pelength;
3605 
3606   if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
3607     return FALSE;
3608 
3609   bfd_bwrite (&checksum, (bfd_size_type) 4, abfd);
3610 
3611   return TRUE;
3612 }
3613 
3614 #endif /* COFF_IMAGE_WITH_PE */
3615 
3616 static bfd_boolean
coff_write_object_contents(bfd * abfd)3617 coff_write_object_contents (bfd * abfd)
3618 {
3619   asection *current;
3620   bfd_boolean hasrelocs = FALSE;
3621   bfd_boolean haslinno = FALSE;
3622 #ifdef COFF_IMAGE_WITH_PE
3623   bfd_boolean hasdebug = FALSE;
3624 #endif
3625   file_ptr scn_base;
3626   file_ptr reloc_base;
3627   file_ptr lineno_base;
3628   file_ptr sym_base;
3629   unsigned long reloc_size = 0, reloc_count = 0;
3630   unsigned long lnno_size = 0;
3631   bfd_boolean long_section_names;
3632   asection *text_sec = NULL;
3633   asection *data_sec = NULL;
3634   asection *bss_sec = NULL;
3635   struct internal_filehdr internal_f;
3636   struct internal_aouthdr internal_a;
3637 #ifdef COFF_LONG_SECTION_NAMES
3638   size_t string_size = STRING_SIZE_SIZE;
3639 #endif
3640 
3641   bfd_set_error (bfd_error_system_call);
3642 
3643   /* Make a pass through the symbol table to count line number entries and
3644      put them into the correct asections.  */
3645   lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd);
3646 
3647   if (! abfd->output_has_begun)
3648     {
3649       if (! coff_compute_section_file_positions (abfd))
3650 	return FALSE;
3651     }
3652 
3653   reloc_base = obj_relocbase (abfd);
3654 
3655   /* Work out the size of the reloc and linno areas.  */
3656 
3657   for (current = abfd->sections; current != NULL; current =
3658        current->next)
3659     {
3660 #ifdef COFF_WITH_PE
3661       /* We store the actual reloc count in the first reloc's addr.  */
3662       if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3663 	reloc_count ++;
3664 #endif
3665       reloc_count += current->reloc_count;
3666     }
3667 
3668   reloc_size = reloc_count * bfd_coff_relsz (abfd);
3669 
3670   lineno_base = reloc_base + reloc_size;
3671   sym_base = lineno_base + lnno_size;
3672 
3673   /* Indicate in each section->line_filepos its actual file address.  */
3674   for (current = abfd->sections; current != NULL; current =
3675        current->next)
3676     {
3677       if (current->lineno_count)
3678 	{
3679 	  current->line_filepos = lineno_base;
3680 	  current->moving_line_filepos = lineno_base;
3681 	  lineno_base += current->lineno_count * bfd_coff_linesz (abfd);
3682 	}
3683       else
3684 	current->line_filepos = 0;
3685 
3686       if (current->reloc_count)
3687 	{
3688 	  current->rel_filepos = reloc_base;
3689 	  reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
3690 #ifdef COFF_WITH_PE
3691 	  /* Extra reloc to hold real count.  */
3692 	  if (obj_pe (abfd) && current->reloc_count >= 0xffff)
3693 	    reloc_base += bfd_coff_relsz (abfd);
3694 #endif
3695 	}
3696       else
3697 	current->rel_filepos = 0;
3698     }
3699 
3700   /* Write section headers to the file.  */
3701   internal_f.f_nscns = 0;
3702 
3703   if ((abfd->flags & EXEC_P) != 0)
3704     scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
3705   else
3706     {
3707       scn_base = bfd_coff_filhsz (abfd);
3708 #ifdef RS6000COFF_C
3709 #ifndef XCOFF64
3710       if (xcoff_data (abfd)->full_aouthdr)
3711 	scn_base += bfd_coff_aoutsz (abfd);
3712       else
3713 	scn_base += SMALL_AOUTSZ;
3714 #endif
3715 #endif
3716     }
3717 
3718   if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
3719     return FALSE;
3720 
3721   long_section_names = FALSE;
3722   for (current = abfd->sections;
3723        current != NULL;
3724        current = current->next)
3725     {
3726       struct internal_scnhdr section;
3727 #ifdef COFF_IMAGE_WITH_PE
3728       bfd_boolean is_reloc_section = FALSE;
3729 
3730       if (strcmp (current->name, DOT_RELOC) == 0)
3731 	{
3732 	  is_reloc_section = TRUE;
3733 	  hasrelocs = TRUE;
3734 	  pe_data (abfd)->has_reloc_section = 1;
3735 	}
3736 #endif
3737 
3738       internal_f.f_nscns++;
3739 
3740       strncpy (section.s_name, current->name, SCNNMLEN);
3741 
3742 #ifdef COFF_LONG_SECTION_NAMES
3743       /* Handle long section names as in PE.  This must be compatible
3744 	 with the code in coff_write_symbols and _bfd_coff_final_link.  */
3745       if (bfd_coff_long_section_names (abfd))
3746 	{
3747 	  size_t len;
3748 
3749 	  len = strlen (current->name);
3750 	  if (len > SCNNMLEN)
3751 	    {
3752 	      /* The s_name field is defined to be NUL-padded but need not be
3753 		 NUL-terminated.  We use a temporary buffer so that we can still
3754 		 sprintf all eight chars without splatting a terminating NUL
3755 		 over the first byte of the following member (s_paddr).  */
3756 	      /* PR 21096: The +20 is to stop a bogus warning from gcc7 about
3757 		 a possible buffer overflow.  */
3758 	      char s_name_buf[SCNNMLEN + 1 + 20];
3759 
3760 	      /* An inherent limitation of the /nnnnnnn notation used to indicate
3761 		 the offset of the long name in the string table is that we
3762 		 cannot address entries beyone the ten million byte boundary.  */
3763 	      if (string_size >= 10000000)
3764 		{
3765 		  bfd_set_error (bfd_error_file_too_big);
3766 		  _bfd_error_handler
3767 		    /* xgettext:c-format */
3768 		    (_("%B: section %A: string table overflow at offset %ld"),
3769 		    abfd, current, (unsigned long) string_size);
3770 		  return FALSE;
3771 		}
3772 
3773 	      /* We do not need to use snprintf here as we have already verfied
3774 		 that string_size is not too big, plus we have an overlarge
3775 		 buffer, just in case.  */
3776 	      sprintf (s_name_buf, "/%lu", (unsigned long) string_size);
3777 	      /* Then strncpy takes care of any padding for us.  */
3778 	      strncpy (section.s_name, s_name_buf, SCNNMLEN);
3779 	      string_size += len + 1;
3780 	      long_section_names = TRUE;
3781 	    }
3782 	}
3783 #endif
3784 
3785 #ifdef _LIB
3786       /* Always set s_vaddr of .lib to 0.  This is right for SVR3.2
3787 	 Ian Taylor <ian@cygnus.com>.  */
3788       if (strcmp (current->name, _LIB) == 0)
3789 	section.s_vaddr = 0;
3790       else
3791 #endif
3792       section.s_vaddr = current->vma;
3793       section.s_paddr = current->lma;
3794       section.s_size =  current->size;
3795 #ifdef coff_get_section_load_page
3796       section.s_page = coff_get_section_load_page (current);
3797 #else
3798       section.s_page = 0;
3799 #endif
3800 
3801 #ifdef COFF_WITH_PE
3802       section.s_paddr = 0;
3803 #endif
3804 #ifdef COFF_IMAGE_WITH_PE
3805       /* Reminder: s_paddr holds the virtual size of the section.  */
3806       if (coff_section_data (abfd, current) != NULL
3807 	  && pei_section_data (abfd, current) != NULL)
3808 	section.s_paddr = pei_section_data (abfd, current)->virt_size;
3809       else
3810 	section.s_paddr = 0;
3811 #endif
3812 
3813       /* If this section has no size or is unloadable then the scnptr
3814 	 will be 0 too.  */
3815       if (current->size == 0
3816 	  || (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
3817 	section.s_scnptr = 0;
3818       else
3819 	section.s_scnptr = current->filepos;
3820 
3821       section.s_relptr = current->rel_filepos;
3822       section.s_lnnoptr = current->line_filepos;
3823       section.s_nreloc = current->reloc_count;
3824       section.s_nlnno = current->lineno_count;
3825 #ifndef COFF_IMAGE_WITH_PE
3826       /* In PEI, relocs come in the .reloc section.  */
3827       if (current->reloc_count != 0)
3828 	hasrelocs = TRUE;
3829 #endif
3830       if (current->lineno_count != 0)
3831 	haslinno = TRUE;
3832 #ifdef COFF_IMAGE_WITH_PE
3833       if ((current->flags & SEC_DEBUGGING) != 0
3834 	  && ! is_reloc_section)
3835 	hasdebug = TRUE;
3836 #endif
3837 
3838 #ifdef RS6000COFF_C
3839 #ifndef XCOFF64
3840       /* Indicate the use of an XCOFF overflow section header.  */
3841       if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
3842 	{
3843 	  section.s_nreloc = 0xffff;
3844 	  section.s_nlnno = 0xffff;
3845 	}
3846 #endif
3847 #endif
3848 
3849       section.s_flags = sec_to_styp_flags (current->name, current->flags);
3850 
3851       if (!strcmp (current->name, _TEXT))
3852 	text_sec = current;
3853       else if (!strcmp (current->name, _DATA))
3854 	data_sec = current;
3855       else if (!strcmp (current->name, _BSS))
3856 	bss_sec = current;
3857 
3858 #ifdef I960
3859       section.s_align = (current->alignment_power
3860 			 ? 1 << current->alignment_power
3861 			 : 0);
3862 #endif
3863 #ifdef COFF_ENCODE_ALIGNMENT
3864       COFF_ENCODE_ALIGNMENT(section, current->alignment_power);
3865       if ((unsigned int)COFF_DECODE_ALIGNMENT(section.s_flags)
3866 	  != current->alignment_power)
3867 	{
3868 	  bfd_boolean warn = coff_data (abfd)->link_info
3869 	    && !bfd_link_relocatable (coff_data (abfd)->link_info);
3870 
3871 	  _bfd_error_handler
3872 	    /* xgettext:c-format */
3873 	    (_("%B:%s section %s: alignment 2**%u not representable"),
3874 	    abfd, warn ? " warning:" : "", current->name,
3875 	    current->alignment_power);
3876 	  if (!warn)
3877 	    {
3878 	      bfd_set_error (bfd_error_nonrepresentable_section);
3879 	      return FALSE;
3880 	    }
3881 	}
3882 #endif
3883 
3884 #ifdef COFF_IMAGE_WITH_PE
3885       /* Suppress output of the sections if they are null.  ld
3886 	 includes the bss and data sections even if there is no size
3887 	 assigned to them.  NT loader doesn't like it if these section
3888 	 headers are included if the sections themselves are not
3889 	 needed.  See also coff_compute_section_file_positions.  */
3890       if (section.s_size == 0)
3891 	internal_f.f_nscns--;
3892       else
3893 #endif
3894 	{
3895 	  SCNHDR buff;
3896 	  bfd_size_type amt = bfd_coff_scnhsz (abfd);
3897 
3898 	  if (coff_swap_scnhdr_out (abfd, &section, &buff) == 0
3899 	      || bfd_bwrite (& buff, amt, abfd) != amt)
3900 	    return FALSE;
3901 	}
3902 
3903 #ifdef COFF_WITH_PE
3904       /* PE stores COMDAT section information in the symbol table.  If
3905 	 this section is supposed to have some COMDAT info, track down
3906 	 the symbol in the symbol table and modify it.  */
3907       if ((current->flags & SEC_LINK_ONCE) != 0)
3908 	{
3909 	  unsigned int i, count;
3910 	  asymbol **psym;
3911 	  coff_symbol_type *csym = NULL;
3912 	  asymbol **psymsec;
3913 
3914 	  psymsec = NULL;
3915 	  count = bfd_get_symcount (abfd);
3916 	  for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++)
3917 	    {
3918 	      if ((*psym)->section != current)
3919 		continue;
3920 
3921 	      /* Remember the location of the first symbol in this
3922 		 section.  */
3923 	      if (psymsec == NULL)
3924 		psymsec = psym;
3925 
3926 	      /* See if this is the section symbol.  */
3927 	      if (strcmp ((*psym)->name, current->name) == 0)
3928 		{
3929 		  csym = coff_symbol_from (*psym);
3930 		  if (csym == NULL
3931 		      || csym->native == NULL
3932 		      || ! csym->native->is_sym
3933 		      || csym->native->u.syment.n_numaux < 1
3934 		      || csym->native->u.syment.n_sclass != C_STAT
3935 		      || csym->native->u.syment.n_type != T_NULL)
3936 		    continue;
3937 
3938 		  /* Here *PSYM is the section symbol for CURRENT.  */
3939 
3940 		  break;
3941 		}
3942 	    }
3943 
3944 	  /* Did we find it?
3945 	     Note that we might not if we're converting the file from
3946 	     some other object file format.  */
3947 	  if (i < count)
3948 	    {
3949 	      combined_entry_type *aux;
3950 
3951 	      /* We don't touch the x_checksum field.  The
3952 		 x_associated field is not currently supported.  */
3953 
3954 	      aux = csym->native + 1;
3955 	      BFD_ASSERT (! aux->is_sym);
3956 	      switch (current->flags & SEC_LINK_DUPLICATES)
3957 		{
3958 		case SEC_LINK_DUPLICATES_DISCARD:
3959 		  aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY;
3960 		  break;
3961 
3962 		case SEC_LINK_DUPLICATES_ONE_ONLY:
3963 		  aux->u.auxent.x_scn.x_comdat =
3964 		    IMAGE_COMDAT_SELECT_NODUPLICATES;
3965 		  break;
3966 
3967 		case SEC_LINK_DUPLICATES_SAME_SIZE:
3968 		  aux->u.auxent.x_scn.x_comdat =
3969 		    IMAGE_COMDAT_SELECT_SAME_SIZE;
3970 		  break;
3971 
3972 		case SEC_LINK_DUPLICATES_SAME_CONTENTS:
3973 		  aux->u.auxent.x_scn.x_comdat =
3974 		    IMAGE_COMDAT_SELECT_EXACT_MATCH;
3975 		  break;
3976 		}
3977 
3978 	      /* The COMDAT symbol must be the first symbol from this
3979 		 section in the symbol table.  In order to make this
3980 		 work, we move the COMDAT symbol before the first
3981 		 symbol we found in the search above.  It's OK to
3982 		 rearrange the symbol table at this point, because
3983 		 coff_renumber_symbols is going to rearrange it
3984 		 further and fix up all the aux entries.  */
3985 	      if (psym != psymsec)
3986 		{
3987 		  asymbol *hold;
3988 		  asymbol **pcopy;
3989 
3990 		  hold = *psym;
3991 		  for (pcopy = psym; pcopy > psymsec; pcopy--)
3992 		    pcopy[0] = pcopy[-1];
3993 		  *psymsec = hold;
3994 		}
3995 	    }
3996 	}
3997 #endif /* COFF_WITH_PE */
3998     }
3999 
4000 #ifdef RS6000COFF_C
4001 #ifndef XCOFF64
4002   /* XCOFF handles overflows in the reloc and line number count fields
4003      by creating a new section header to hold the correct values.  */
4004   for (current = abfd->sections; current != NULL; current = current->next)
4005     {
4006       if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff)
4007 	{
4008 	  struct internal_scnhdr scnhdr;
4009 	  SCNHDR buff;
4010 	  bfd_size_type amt;
4011 
4012 	  internal_f.f_nscns++;
4013 	  memcpy (scnhdr.s_name, ".ovrflo", 8);
4014 	  scnhdr.s_paddr = current->reloc_count;
4015 	  scnhdr.s_vaddr = current->lineno_count;
4016 	  scnhdr.s_size = 0;
4017 	  scnhdr.s_scnptr = 0;
4018 	  scnhdr.s_relptr = current->rel_filepos;
4019 	  scnhdr.s_lnnoptr = current->line_filepos;
4020 	  scnhdr.s_nreloc = current->target_index;
4021 	  scnhdr.s_nlnno = current->target_index;
4022 	  scnhdr.s_flags = STYP_OVRFLO;
4023 	  amt = bfd_coff_scnhsz (abfd);
4024 	  if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
4025 	      || bfd_bwrite (& buff, amt, abfd) != amt)
4026 	    return FALSE;
4027 	}
4028     }
4029 #endif
4030 #endif
4031 
4032   /* OK, now set up the filehdr...  */
4033 
4034   /* Don't include the internal abs section in the section count */
4035 
4036   /* We will NOT put a fucking timestamp in the header here. Every time you
4037      put it back, I will come in and take it out again.  I'm sorry.  This
4038      field does not belong here.  We fill it with a 0 so it compares the
4039      same but is not a reasonable time. -- gnu@cygnus.com  */
4040   internal_f.f_timdat = 0;
4041   internal_f.f_flags = 0;
4042 
4043   if (abfd->flags & EXEC_P)
4044     internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
4045   else
4046     {
4047       internal_f.f_opthdr = 0;
4048 #ifdef RS6000COFF_C
4049 #ifndef XCOFF64
4050       if (xcoff_data (abfd)->full_aouthdr)
4051 	internal_f.f_opthdr = bfd_coff_aoutsz (abfd);
4052       else
4053 	internal_f.f_opthdr = SMALL_AOUTSZ;
4054 #endif
4055 #endif
4056     }
4057 
4058   if (!hasrelocs)
4059     internal_f.f_flags |= F_RELFLG;
4060   if (!haslinno)
4061     internal_f.f_flags |= F_LNNO;
4062   if (abfd->flags & EXEC_P)
4063     internal_f.f_flags |= F_EXEC;
4064 #ifdef COFF_IMAGE_WITH_PE
4065   if (! hasdebug)
4066     internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED;
4067   if (pe_data (abfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE)
4068     internal_f.f_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
4069 #endif
4070 
4071 #ifndef COFF_WITH_pex64
4072 #ifdef COFF_WITH_PE
4073   internal_f.f_flags |= IMAGE_FILE_32BIT_MACHINE;
4074 #else
4075   if (bfd_little_endian (abfd))
4076     internal_f.f_flags |= F_AR32WR;
4077   else
4078     internal_f.f_flags |= F_AR32W;
4079 #endif
4080 #endif
4081 
4082 #ifdef TI_TARGET_ID
4083   /* Target id is used in TI COFF v1 and later; COFF0 won't use this field,
4084      but it doesn't hurt to set it internally.  */
4085   internal_f.f_target_id = TI_TARGET_ID;
4086 #endif
4087 #ifdef TIC80_TARGET_ID
4088   internal_f.f_target_id = TIC80_TARGET_ID;
4089 #endif
4090 
4091   /* FIXME, should do something about the other byte orders and
4092      architectures.  */
4093 
4094 #ifdef RS6000COFF_C
4095   if ((abfd->flags & DYNAMIC) != 0)
4096     internal_f.f_flags |= F_SHROBJ;
4097   if (bfd_get_section_by_name (abfd, _LOADER) != NULL)
4098     internal_f.f_flags |= F_DYNLOAD;
4099 #endif
4100 
4101   memset (&internal_a, 0, sizeof internal_a);
4102 
4103   /* Set up architecture-dependent stuff.  */
4104   {
4105     unsigned int magic = 0;
4106     unsigned short flags = 0;
4107 
4108     coff_set_flags (abfd, &magic, &flags);
4109     internal_f.f_magic = magic;
4110     internal_f.f_flags |= flags;
4111     /* ...and the "opt"hdr...  */
4112 
4113 #ifdef TICOFF_AOUT_MAGIC
4114     internal_a.magic = TICOFF_AOUT_MAGIC;
4115 #define __A_MAGIC_SET__
4116 #endif
4117 #ifdef TIC80COFF
4118     internal_a.magic = TIC80_ARCH_MAGIC;
4119 #define __A_MAGIC_SET__
4120 #endif /* TIC80 */
4121 #ifdef I860
4122     /* FIXME: What are the a.out magic numbers for the i860?  */
4123     internal_a.magic = 0;
4124 #define __A_MAGIC_SET__
4125 #endif /* I860 */
4126 #ifdef I960
4127     internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
4128 #define __A_MAGIC_SET__
4129 #endif /* I960 */
4130 #if M88
4131 #define __A_MAGIC_SET__
4132     internal_a.magic = PAGEMAGICBCS;
4133 #endif /* M88 */
4134 
4135 #if APOLLO_M68
4136 #define __A_MAGIC_SET__
4137     internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
4138 #endif
4139 
4140 #if defined(M68) || defined(WE32K) || defined(M68K)
4141 #define __A_MAGIC_SET__
4142 #if defined(LYNXOS)
4143     internal_a.magic = LYNXCOFFMAGIC;
4144 #else
4145 #if defined(TARG_AUX)
4146     internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED :
4147 			abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED :
4148 			PAGEMAGICEXECSWAPPED);
4149 #else
4150 #if defined (PAGEMAGICPEXECPAGED)
4151     internal_a.magic = PAGEMAGICPEXECPAGED;
4152 #endif
4153 #endif /* TARG_AUX */
4154 #endif /* LYNXOS */
4155 #endif /* M68 || WE32K || M68K */
4156 
4157 #if defined(ARM)
4158 #define __A_MAGIC_SET__
4159     internal_a.magic = ZMAGIC;
4160 #endif
4161 
4162 #if defined(PPC_PE)
4163 #define __A_MAGIC_SET__
4164     internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
4165 #endif
4166 
4167 #if defined MCORE_PE
4168 #define __A_MAGIC_SET__
4169     internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
4170 #endif
4171 
4172 #if defined(I386)
4173 #define __A_MAGIC_SET__
4174 #if defined LYNXOS
4175     internal_a.magic = LYNXCOFFMAGIC;
4176 #elif defined AMD64
4177     internal_a.magic = IMAGE_NT_OPTIONAL_HDR64_MAGIC;
4178 #else
4179     internal_a.magic = ZMAGIC;
4180 #endif
4181 #endif /* I386 */
4182 
4183 #if defined(IA64)
4184 #define __A_MAGIC_SET__
4185     internal_a.magic = PE32PMAGIC;
4186 #endif /* IA64 */
4187 
4188 #if defined(SPARC)
4189 #define __A_MAGIC_SET__
4190 #if defined(LYNXOS)
4191     internal_a.magic = LYNXCOFFMAGIC;
4192 #endif /* LYNXOS */
4193 #endif /* SPARC */
4194 
4195 #ifdef RS6000COFF_C
4196 #define __A_MAGIC_SET__
4197     internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
4198     (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
4199     RS6K_AOUTHDR_OMAGIC;
4200 #endif
4201 
4202 #if defined(SH) && defined(COFF_WITH_PE)
4203 #define __A_MAGIC_SET__
4204     internal_a.magic = SH_PE_MAGIC;
4205 #endif
4206 
4207 #if defined(MIPS) && defined(COFF_WITH_PE)
4208 #define __A_MAGIC_SET__
4209     internal_a.magic = MIPS_PE_MAGIC;
4210 #endif
4211 
4212 #ifndef __A_MAGIC_SET__
4213 #include "Your aouthdr magic number is not being set!"
4214 #else
4215 #undef __A_MAGIC_SET__
4216 #endif
4217   }
4218 
4219   /* FIXME: Does anybody ever set this to another value?  */
4220   internal_a.vstamp = 0;
4221 
4222   /* Now should write relocs, strings, syms.  */
4223   obj_sym_filepos (abfd) = sym_base;
4224 
4225   if (bfd_get_symcount (abfd) != 0)
4226     {
4227       int firstundef;
4228 
4229       if (!coff_renumber_symbols (abfd, &firstundef))
4230 	return FALSE;
4231       coff_mangle_symbols (abfd);
4232       if (! coff_write_symbols (abfd))
4233 	return FALSE;
4234       if (! coff_write_linenumbers (abfd))
4235 	return FALSE;
4236       if (! coff_write_relocs (abfd, firstundef))
4237 	return FALSE;
4238     }
4239 #ifdef COFF_LONG_SECTION_NAMES
4240   else if (long_section_names && ! obj_coff_strings_written (abfd))
4241     {
4242       /* If we have long section names we have to write out the string
4243 	 table even if there are no symbols.  */
4244       if (! coff_write_symbols (abfd))
4245 	return FALSE;
4246     }
4247 #endif
4248 #ifdef COFF_IMAGE_WITH_PE
4249 #ifdef PPC_PE
4250   else if ((abfd->flags & EXEC_P) != 0)
4251     {
4252       bfd_byte b;
4253 
4254       /* PowerPC PE appears to require that all executable files be
4255 	 rounded up to the page size.  */
4256       b = 0;
4257       if (bfd_seek (abfd,
4258 		    (file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
4259 		    SEEK_SET) != 0
4260 	  || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
4261 	return FALSE;
4262     }
4263 #endif
4264 #endif
4265 
4266   /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
4267      backend linker, and obj_raw_syment_count is not valid until after
4268      coff_write_symbols is called.  */
4269   if (obj_raw_syment_count (abfd) != 0)
4270     {
4271       internal_f.f_symptr = sym_base;
4272 #ifdef RS6000COFF_C
4273       /* AIX appears to require that F_RELFLG not be set if there are
4274 	 local symbols but no relocations.  */
4275       internal_f.f_flags &=~ F_RELFLG;
4276 #endif
4277     }
4278   else
4279     {
4280       if (long_section_names)
4281 	internal_f.f_symptr = sym_base;
4282       else
4283 	internal_f.f_symptr = 0;
4284       internal_f.f_flags |= F_LSYMS;
4285     }
4286 
4287   if (text_sec)
4288     {
4289       internal_a.tsize = text_sec->size;
4290       internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
4291     }
4292   if (data_sec)
4293     {
4294       internal_a.dsize = data_sec->size;
4295       internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
4296     }
4297   if (bss_sec)
4298     {
4299       internal_a.bsize = bss_sec->size;
4300       if (internal_a.bsize && bss_sec->vma < internal_a.data_start)
4301 	internal_a.data_start = bss_sec->vma;
4302     }
4303 
4304   internal_a.entry = bfd_get_start_address (abfd);
4305   internal_f.f_nsyms = obj_raw_syment_count (abfd);
4306 
4307 #ifdef RS6000COFF_C
4308   if (xcoff_data (abfd)->full_aouthdr)
4309     {
4310       bfd_vma toc;
4311       asection *loader_sec;
4312 
4313       internal_a.vstamp = 1;
4314 
4315       internal_a.o_snentry = xcoff_data (abfd)->snentry;
4316       if (internal_a.o_snentry == 0)
4317 	internal_a.entry = (bfd_vma) -1;
4318 
4319       if (text_sec != NULL)
4320 	{
4321 	  internal_a.o_sntext = text_sec->target_index;
4322 	  internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec);
4323 	}
4324       else
4325 	{
4326 	  internal_a.o_sntext = 0;
4327 	  internal_a.o_algntext = 0;
4328 	}
4329       if (data_sec != NULL)
4330 	{
4331 	  internal_a.o_sndata = data_sec->target_index;
4332 	  internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec);
4333 	}
4334       else
4335 	{
4336 	  internal_a.o_sndata = 0;
4337 	  internal_a.o_algndata = 0;
4338 	}
4339       loader_sec = bfd_get_section_by_name (abfd, ".loader");
4340       if (loader_sec != NULL)
4341 	internal_a.o_snloader = loader_sec->target_index;
4342       else
4343 	internal_a.o_snloader = 0;
4344       if (bss_sec != NULL)
4345 	internal_a.o_snbss = bss_sec->target_index;
4346       else
4347 	internal_a.o_snbss = 0;
4348 
4349       toc = xcoff_data (abfd)->toc;
4350       internal_a.o_toc = toc;
4351       internal_a.o_sntoc = xcoff_data (abfd)->sntoc;
4352 
4353       internal_a.o_modtype = xcoff_data (abfd)->modtype;
4354       if (xcoff_data (abfd)->cputype != -1)
4355 	internal_a.o_cputype = xcoff_data (abfd)->cputype;
4356       else
4357 	{
4358 	  switch (bfd_get_arch (abfd))
4359 	    {
4360 	    case bfd_arch_rs6000:
4361 	      internal_a.o_cputype = 4;
4362 	      break;
4363 	    case bfd_arch_powerpc:
4364 	      if (bfd_get_mach (abfd) == bfd_mach_ppc)
4365 		internal_a.o_cputype = 3;
4366 	      else
4367 		internal_a.o_cputype = 1;
4368 	      break;
4369 	    default:
4370 	      abort ();
4371 	    }
4372 	}
4373       internal_a.o_maxstack = xcoff_data (abfd)->maxstack;
4374       internal_a.o_maxdata = xcoff_data (abfd)->maxdata;
4375     }
4376 #endif
4377 
4378 #ifdef COFF_WITH_PE
4379   {
4380     /* After object contents are finalized so we can compute a reasonable hash,
4381        but before header is written so we can update it to point to debug directory.  */
4382     struct pe_tdata *pe = pe_data (abfd);
4383 
4384     if (pe->build_id.after_write_object_contents != NULL)
4385       (*pe->build_id.after_write_object_contents) (abfd);
4386   }
4387 #endif
4388 
4389   /* Now write header.  */
4390   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
4391     return FALSE;
4392 
4393   {
4394     char * buff;
4395     bfd_size_type amount = bfd_coff_filhsz (abfd);
4396 
4397     buff = (char *) bfd_malloc (amount);
4398     if (buff == NULL)
4399       return FALSE;
4400 
4401     bfd_coff_swap_filehdr_out (abfd, & internal_f, buff);
4402     amount = bfd_bwrite (buff, amount, abfd);
4403 
4404     free (buff);
4405 
4406     if (amount != bfd_coff_filhsz (abfd))
4407       return FALSE;
4408   }
4409 
4410   if (abfd->flags & EXEC_P)
4411     {
4412       /* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
4413 	 include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)).  */
4414       char * buff;
4415       bfd_size_type amount = bfd_coff_aoutsz (abfd);
4416 
4417       buff = (char *) bfd_malloc (amount);
4418       if (buff == NULL)
4419 	return FALSE;
4420 
4421       coff_swap_aouthdr_out (abfd, & internal_a, buff);
4422       amount = bfd_bwrite (buff, amount, abfd);
4423 
4424       free (buff);
4425 
4426       if (amount != bfd_coff_aoutsz (abfd))
4427 	return FALSE;
4428 
4429 #ifdef COFF_IMAGE_WITH_PE
4430       if (! coff_apply_checksum (abfd))
4431 	return FALSE;
4432 #endif
4433     }
4434 #ifdef RS6000COFF_C
4435   else
4436     {
4437       AOUTHDR buff;
4438       size_t size;
4439 
4440       /* XCOFF seems to always write at least a small a.out header.  */
4441       coff_swap_aouthdr_out (abfd, & internal_a, & buff);
4442       if (xcoff_data (abfd)->full_aouthdr)
4443 	size = bfd_coff_aoutsz (abfd);
4444       else
4445 	size = SMALL_AOUTSZ;
4446       if (bfd_bwrite (& buff, (bfd_size_type) size, abfd) != size)
4447 	return FALSE;
4448     }
4449 #endif
4450 
4451   return TRUE;
4452 }
4453 
4454 static bfd_boolean
coff_set_section_contents(bfd * abfd,sec_ptr section,const void * location,file_ptr offset,bfd_size_type count)4455 coff_set_section_contents (bfd * abfd,
4456 			   sec_ptr section,
4457 			   const void * location,
4458 			   file_ptr offset,
4459 			   bfd_size_type count)
4460 {
4461   if (! abfd->output_has_begun)	/* Set by bfd.c handler.  */
4462     {
4463       if (! coff_compute_section_file_positions (abfd))
4464 	return FALSE;
4465     }
4466 
4467 #if defined(_LIB) && !defined(TARG_AUX)
4468    /* The physical address field of a .lib section is used to hold the
4469       number of shared libraries in the section.  This code counts the
4470       number of sections being written, and increments the lma field
4471       with the number.
4472 
4473       I have found no documentation on the contents of this section.
4474       Experimentation indicates that the section contains zero or more
4475       records, each of which has the following structure:
4476 
4477       - a (four byte) word holding the length of this record, in words,
4478       - a word that always seems to be set to "2",
4479       - the path to a shared library, null-terminated and then padded
4480 	to a whole word boundary.
4481 
4482       bfd_assert calls have been added to alert if an attempt is made
4483       to write a section which doesn't follow these assumptions.  The
4484       code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe
4485       <robertl@arnet.com> (Thanks!).
4486 
4487       Gvran Uddeborg <gvran@uddeborg.pp.se>.  */
4488     if (strcmp (section->name, _LIB) == 0)
4489       {
4490 	bfd_byte *rec, *recend;
4491 
4492 	rec = (bfd_byte *) location;
4493 	recend = rec + count;
4494 	while (rec < recend)
4495 	  {
4496 	    ++section->lma;
4497 	    rec += bfd_get_32 (abfd, rec) * 4;
4498 	  }
4499 
4500 	BFD_ASSERT (rec == recend);
4501       }
4502 #endif
4503 
4504   /* Don't write out bss sections - one way to do this is to
4505        see if the filepos has not been set.  */
4506   if (section->filepos == 0)
4507     return TRUE;
4508 
4509   if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
4510     return FALSE;
4511 
4512   if (count == 0)
4513     return TRUE;
4514 
4515   return bfd_bwrite (location, count, abfd) == count;
4516 }
4517 
4518 static void *
buy_and_read(bfd * abfd,file_ptr where,bfd_size_type size)4519 buy_and_read (bfd *abfd, file_ptr where, bfd_size_type size)
4520 {
4521   void * area = bfd_alloc (abfd, size);
4522 
4523   if (!area)
4524     return NULL;
4525   if (bfd_seek (abfd, where, SEEK_SET) != 0
4526       || bfd_bread (area, size, abfd) != size)
4527     return NULL;
4528   return area;
4529 }
4530 
4531 /*
4532 SUBSUBSECTION
4533 	Reading linenumbers
4534 
4535 	Creating the linenumber table is done by reading in the entire
4536 	coff linenumber table, and creating another table for internal use.
4537 
4538 	A coff linenumber table is structured so that each function
4539 	is marked as having a line number of 0. Each line within the
4540 	function is an offset from the first line in the function. The
4541 	base of the line number information for the table is stored in
4542 	the symbol associated with the function.
4543 
4544 	Note: The PE format uses line number 0 for a flag indicating a
4545 	new source file.
4546 
4547 	The information is copied from the external to the internal
4548 	table, and each symbol which marks a function is marked by
4549 	pointing its...
4550 
4551 	How does this work ?
4552 */
4553 
4554 static int
coff_sort_func_alent(const void * arg1,const void * arg2)4555 coff_sort_func_alent (const void * arg1, const void * arg2)
4556 {
4557   const alent *al1 = *(const alent **) arg1;
4558   const alent *al2 = *(const alent **) arg2;
4559   const coff_symbol_type *s1 = (const coff_symbol_type *) (al1->u.sym);
4560   const coff_symbol_type *s2 = (const coff_symbol_type *) (al2->u.sym);
4561 
4562   if (s1 == NULL || s2 == NULL)
4563     return 0;
4564   if (s1->symbol.value < s2->symbol.value)
4565     return -1;
4566   else if (s1->symbol.value > s2->symbol.value)
4567     return 1;
4568 
4569   return 0;
4570 }
4571 
4572 static bfd_boolean
coff_slurp_line_table(bfd * abfd,asection * asect)4573 coff_slurp_line_table (bfd *abfd, asection *asect)
4574 {
4575   LINENO *native_lineno;
4576   alent *lineno_cache;
4577   bfd_size_type amt;
4578   unsigned int counter;
4579   alent *cache_ptr;
4580   bfd_vma prev_offset = 0;
4581   bfd_boolean ordered = TRUE;
4582   unsigned int nbr_func;
4583   LINENO *src;
4584   bfd_boolean have_func;
4585   bfd_boolean ret = TRUE;
4586 
4587   BFD_ASSERT (asect->lineno == NULL);
4588 
4589   if (asect->lineno_count > asect->size)
4590     {
4591       _bfd_error_handler
4592 	(_("%B: warning: line number count (%#lx) exceeds section size (%#lx)"),
4593 	 abfd, (unsigned long) asect->lineno_count, (unsigned long) asect->size);
4594       return FALSE;
4595     }
4596 
4597   amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent);
4598   lineno_cache = (alent *) bfd_alloc (abfd, amt);
4599   if (lineno_cache == NULL)
4600     return FALSE;
4601 
4602   amt = (bfd_size_type) bfd_coff_linesz (abfd) * asect->lineno_count;
4603   native_lineno = (LINENO *) buy_and_read (abfd, asect->line_filepos, amt);
4604   if (native_lineno == NULL)
4605     {
4606       _bfd_error_handler
4607 	(_("%B: warning: line number table read failed"), abfd);
4608       bfd_release (abfd, lineno_cache);
4609       return FALSE;
4610     }
4611 
4612   cache_ptr = lineno_cache;
4613   asect->lineno = lineno_cache;
4614   src = native_lineno;
4615   nbr_func = 0;
4616   have_func = FALSE;
4617 
4618   for (counter = 0; counter < asect->lineno_count; counter++, src++)
4619     {
4620       struct internal_lineno dst;
4621 
4622       bfd_coff_swap_lineno_in (abfd, src, &dst);
4623       cache_ptr->line_number = dst.l_lnno;
4624       /* Appease memory checkers that get all excited about
4625 	 uninitialised memory when copying alents if u.offset is
4626 	 larger than u.sym.  (64-bit BFD on 32-bit host.)  */
4627       memset (&cache_ptr->u, 0, sizeof (cache_ptr->u));
4628 
4629       if (cache_ptr->line_number == 0)
4630 	{
4631 	  combined_entry_type * ent;
4632 	  unsigned long symndx;
4633 	  coff_symbol_type *sym;
4634 
4635 	  have_func = FALSE;
4636 	  symndx = dst.l_addr.l_symndx;
4637 	  if (symndx >= obj_raw_syment_count (abfd))
4638 	    {
4639 	      _bfd_error_handler
4640 		/* xgettext:c-format */
4641 		(_("%B: warning: illegal symbol index 0x%lx in line number entry %d"),
4642 		 abfd, symndx, counter);
4643 	      cache_ptr->line_number = -1;
4644 	      ret = FALSE;
4645 	      continue;
4646 	    }
4647 
4648 	  ent = obj_raw_syments (abfd) + symndx;
4649 	  /* FIXME: We should not be casting between ints and
4650 	     pointers like this.  */
4651 	  if (! ent->is_sym)
4652 	    {
4653 	      _bfd_error_handler
4654 		/* xgettext:c-format */
4655 		(_("%B: warning: illegal symbol index 0x%lx in line number entry %d"),
4656 		 abfd, symndx, counter);
4657 	      cache_ptr->line_number = -1;
4658 	      ret = FALSE;
4659 	      continue;
4660 	    }
4661 	  sym = (coff_symbol_type *) (ent->u.syment._n._n_n._n_zeroes);
4662 
4663 	  /* PR 17512 file: 078-10659-0.004  */
4664 	  if (sym < obj_symbols (abfd)
4665 	      || sym >= obj_symbols (abfd) + bfd_get_symcount (abfd))
4666 	    {
4667 	      _bfd_error_handler
4668 		/* xgettext:c-format */
4669 		(_("%B: warning: illegal symbol in line number entry %d"),
4670 		 abfd, counter);
4671 	      cache_ptr->line_number = -1;
4672 	      ret = FALSE;
4673 	      continue;
4674 	    }
4675 
4676 	  have_func = TRUE;
4677 	  nbr_func++;
4678 	  cache_ptr->u.sym = (asymbol *) sym;
4679 	  if (sym->lineno != NULL)
4680 	    _bfd_error_handler
4681 	      /* xgettext:c-format */
4682 	      (_("%B: warning: duplicate line number information for `%s'"),
4683 	       abfd, bfd_asymbol_name (&sym->symbol));
4684 
4685 	  sym->lineno = cache_ptr;
4686 	  if (sym->symbol.value < prev_offset)
4687 	    ordered = FALSE;
4688 	  prev_offset = sym->symbol.value;
4689 	}
4690       else if (!have_func)
4691 	/* Drop line information that has no associated function.
4692 	   PR 17521: file: 078-10659-0.004.  */
4693 	continue;
4694       else
4695 	cache_ptr->u.offset = (dst.l_addr.l_paddr
4696 			       - bfd_section_vma (abfd, asect));
4697       cache_ptr++;
4698     }
4699 
4700   asect->lineno_count = cache_ptr - lineno_cache;
4701   memset (cache_ptr, 0, sizeof (*cache_ptr));
4702   bfd_release (abfd, native_lineno);
4703 
4704   /* On some systems (eg AIX5.3) the lineno table may not be sorted.  */
4705   if (!ordered)
4706     {
4707       /* Sort the table.  */
4708       alent **func_table;
4709       alent *n_lineno_cache;
4710 
4711       /* Create a table of functions.  */
4712       func_table = (alent **) bfd_alloc (abfd, nbr_func * sizeof (alent *));
4713       if (func_table != NULL)
4714 	{
4715 	  alent **p = func_table;
4716 	  unsigned int i;
4717 
4718 	  for (i = 0; i < asect->lineno_count; i++)
4719 	    if (lineno_cache[i].line_number == 0)
4720 	      *p++ = &lineno_cache[i];
4721 
4722 	  BFD_ASSERT ((unsigned int) (p - func_table) == nbr_func);
4723 
4724 	  /* Sort by functions.  */
4725 	  qsort (func_table, nbr_func, sizeof (alent *), coff_sort_func_alent);
4726 
4727 	  /* Create the new sorted table.  */
4728 	  amt = (bfd_size_type) asect->lineno_count * sizeof (alent);
4729 	  n_lineno_cache = (alent *) bfd_alloc (abfd, amt);
4730 	  if (n_lineno_cache != NULL)
4731 	    {
4732 	      alent *n_cache_ptr = n_lineno_cache;
4733 
4734 	      for (i = 0; i < nbr_func; i++)
4735 		{
4736 		  coff_symbol_type *sym;
4737 		  alent *old_ptr = func_table[i];
4738 
4739 		  /* Update the function entry.  */
4740 		  sym = (coff_symbol_type *) old_ptr->u.sym;
4741 		  /* PR binutils/17512: Point the lineno to where
4742 		     this entry will be after the memcpy below.  */
4743 		  sym->lineno = lineno_cache + (n_cache_ptr - n_lineno_cache);
4744 		  /* Copy the function and line number entries.  */
4745 		  do
4746 		    *n_cache_ptr++ = *old_ptr++;
4747 		  while (old_ptr->line_number != 0);
4748 		}
4749 	      BFD_ASSERT ((bfd_size_type) (n_cache_ptr - n_lineno_cache) == (amt / sizeof (alent)));
4750 
4751 	      memcpy (lineno_cache, n_lineno_cache, amt);
4752 	    }
4753 	  else
4754 	    ret = FALSE;
4755 	  bfd_release (abfd, func_table);
4756 	}
4757       else
4758 	ret = FALSE;
4759     }
4760 
4761   return ret;
4762 }
4763 
4764 /* Slurp in the symbol table, converting it to generic form.  Note
4765    that if coff_relocate_section is defined, the linker will read
4766    symbols via coff_link_add_symbols, rather than via this routine.  */
4767 
4768 static bfd_boolean
coff_slurp_symbol_table(bfd * abfd)4769 coff_slurp_symbol_table (bfd * abfd)
4770 {
4771   combined_entry_type *native_symbols;
4772   coff_symbol_type *cached_area;
4773   unsigned int *table_ptr;
4774   bfd_size_type amt;
4775   unsigned int number_of_symbols = 0;
4776   bfd_boolean ret = TRUE;
4777 
4778   if (obj_symbols (abfd))
4779     return TRUE;
4780 
4781   /* Read in the symbol table.  */
4782   if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
4783     return FALSE;
4784 
4785   /* Allocate enough room for all the symbols in cached form.  */
4786   amt = obj_raw_syment_count (abfd);
4787   amt *= sizeof (coff_symbol_type);
4788   cached_area = (coff_symbol_type *) bfd_alloc (abfd, amt);
4789   if (cached_area == NULL)
4790     return FALSE;
4791 
4792   amt = obj_raw_syment_count (abfd);
4793   amt *= sizeof (unsigned int);
4794   table_ptr = (unsigned int *) bfd_zalloc (abfd, amt);
4795 
4796   if (table_ptr == NULL)
4797     return FALSE;
4798   else
4799     {
4800       coff_symbol_type *dst = cached_area;
4801       unsigned int last_native_index = obj_raw_syment_count (abfd);
4802       unsigned int this_index = 0;
4803 
4804       while (this_index < last_native_index)
4805 	{
4806 	  combined_entry_type *src = native_symbols + this_index;
4807 	  table_ptr[this_index] = number_of_symbols;
4808 
4809 	  dst->symbol.the_bfd = abfd;
4810 	  BFD_ASSERT (src->is_sym);
4811 	  dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
4812 	  /* We use the native name field to point to the cached field.  */
4813 	  src->u.syment._n._n_n._n_zeroes = (bfd_hostptr_t) dst;
4814 	  dst->symbol.section = coff_section_from_bfd_index (abfd,
4815 						     src->u.syment.n_scnum);
4816 	  dst->symbol.flags = 0;
4817 	  /* PR 17512: file: 079-7098-0.001:0.1.  */
4818 	  dst->symbol.value = 0;
4819 	  dst->done_lineno = FALSE;
4820 
4821 	  switch (src->u.syment.n_sclass)
4822 	    {
4823 #ifdef I960
4824 	    case C_LEAFEXT:
4825 	      /* Fall through to next case.  */
4826 #endif
4827 
4828 	    case C_EXT:
4829 	    case C_WEAKEXT:
4830 #if defined ARM
4831 	    case C_THUMBEXT:
4832 	    case C_THUMBEXTFUNC:
4833 #endif
4834 #ifdef RS6000COFF_C
4835 	    case C_HIDEXT:
4836 #if ! defined _AIX52 && ! defined AIX_WEAK_SUPPORT
4837 	    case C_AIX_WEAKEXT:
4838 #endif
4839 #endif
4840 #ifdef C_SYSTEM
4841 	    case C_SYSTEM:	/* System Wide variable.  */
4842 #endif
4843 #ifdef COFF_WITH_PE
4844 	    /* In PE, 0x68 (104) denotes a section symbol.  */
4845 	    case C_SECTION:
4846 	    /* In PE, 0x69 (105) denotes a weak external symbol.  */
4847 	    case C_NT_WEAK:
4848 #endif
4849 	      switch (coff_classify_symbol (abfd, &src->u.syment))
4850 		{
4851 		case COFF_SYMBOL_GLOBAL:
4852 		  dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
4853 #if defined COFF_WITH_PE
4854 		  /* PE sets the symbol to a value relative to the
4855 		     start of the section.  */
4856 		  dst->symbol.value = src->u.syment.n_value;
4857 #else
4858 		  dst->symbol.value = (src->u.syment.n_value
4859 				       - dst->symbol.section->vma);
4860 #endif
4861 		  if (ISFCN ((src->u.syment.n_type)))
4862 		    /* A function ext does not go at the end of a
4863 		       file.  */
4864 		    dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4865 		  break;
4866 
4867 		case COFF_SYMBOL_COMMON:
4868 		  dst->symbol.section = bfd_com_section_ptr;
4869 		  dst->symbol.value = src->u.syment.n_value;
4870 		  break;
4871 
4872 		case COFF_SYMBOL_UNDEFINED:
4873 		  dst->symbol.section = bfd_und_section_ptr;
4874 		  dst->symbol.value = 0;
4875 		  break;
4876 
4877 		case COFF_SYMBOL_PE_SECTION:
4878 		  dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM;
4879 		  dst->symbol.value = 0;
4880 		  break;
4881 
4882 		case COFF_SYMBOL_LOCAL:
4883 		  dst->symbol.flags = BSF_LOCAL;
4884 #if defined COFF_WITH_PE
4885 		  /* PE sets the symbol to a value relative to the
4886 		     start of the section.  */
4887 		  dst->symbol.value = src->u.syment.n_value;
4888 #else
4889 		  dst->symbol.value = (src->u.syment.n_value
4890 				       - dst->symbol.section->vma);
4891 #endif
4892 		  if (ISFCN ((src->u.syment.n_type)))
4893 		    dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION;
4894 		  break;
4895 		}
4896 
4897 #ifdef RS6000COFF_C
4898 	      /* A symbol with a csect entry should not go at the end.  */
4899 	      if (src->u.syment.n_numaux > 0)
4900 		dst->symbol.flags |= BSF_NOT_AT_END;
4901 #endif
4902 
4903 #ifdef COFF_WITH_PE
4904 	      if (src->u.syment.n_sclass == C_NT_WEAK)
4905 		dst->symbol.flags |= BSF_WEAK;
4906 
4907 	      if (src->u.syment.n_sclass == C_SECTION
4908 		  && src->u.syment.n_scnum > 0)
4909 		dst->symbol.flags = BSF_LOCAL;
4910 #endif
4911 	      if (src->u.syment.n_sclass == C_WEAKEXT
4912 #ifdef RS6000COFF_C
4913 		  || src->u.syment.n_sclass == C_AIX_WEAKEXT
4914 #endif
4915 		  )
4916 		dst->symbol.flags |= BSF_WEAK;
4917 
4918 	      break;
4919 
4920 	    case C_STAT:	 /* Static.  */
4921 #ifdef I960
4922 	    case C_LEAFSTAT:	 /* Static leaf procedure.  */
4923 #endif
4924 #if defined ARM
4925 	    case C_THUMBSTAT:    /* Thumb static.  */
4926 	    case C_THUMBLABEL:   /* Thumb label.  */
4927 	    case C_THUMBSTATFUNC:/* Thumb static function.  */
4928 #endif
4929 #ifdef RS6000COFF_C
4930 	    case C_DWARF:	 /* A label in a dwarf section.  */
4931 	    case C_INFO:	 /* A label in a comment section.  */
4932 #endif
4933 	    case C_LABEL:	 /* Label.  */
4934 	      if (src->u.syment.n_scnum == N_DEBUG)
4935 		dst->symbol.flags = BSF_DEBUGGING;
4936 	      else
4937 		dst->symbol.flags = BSF_LOCAL;
4938 
4939 	      /* Base the value as an index from the base of the
4940 		 section, if there is one.  */
4941 	      if (dst->symbol.section)
4942 		{
4943 #if defined COFF_WITH_PE
4944 		  /* PE sets the symbol to a value relative to the
4945 		     start of the section.  */
4946 		  dst->symbol.value = src->u.syment.n_value;
4947 #else
4948 		  dst->symbol.value = (src->u.syment.n_value
4949 				       - dst->symbol.section->vma);
4950 #endif
4951 		}
4952 	      else
4953 		dst->symbol.value = src->u.syment.n_value;
4954 	      break;
4955 
4956 	    case C_MOS:		/* Member of structure.  */
4957 	    case C_EOS:		/* End of structure.  */
4958 	    case C_REGPARM:	/* Register parameter.  */
4959 	    case C_REG:		/* register variable.  */
4960 	      /* C_AUTOARG conflicts with TI COFF C_UEXT.  */
4961 #if !defined (TIC80COFF) && !defined (TICOFF)
4962 #ifdef C_AUTOARG
4963 	    case C_AUTOARG:	/* 960-specific storage class.  */
4964 #endif
4965 #endif
4966 	    case C_TPDEF:	/* Type definition.  */
4967 	    case C_ARG:
4968 	    case C_AUTO:	/* Automatic variable.  */
4969 	    case C_FIELD:	/* Bit field.  */
4970 	    case C_ENTAG:	/* Enumeration tag.  */
4971 	    case C_MOE:		/* Member of enumeration.  */
4972 	    case C_MOU:		/* Member of union.  */
4973 	    case C_UNTAG:	/* Union tag.  */
4974 	      dst->symbol.flags = BSF_DEBUGGING;
4975 	      dst->symbol.value = (src->u.syment.n_value);
4976 	      break;
4977 
4978 	    case C_FILE:	/* File name.  */
4979 	    case C_STRTAG:	/* Structure tag.  */
4980 #ifdef RS6000COFF_C
4981 	    case C_GSYM:
4982 	    case C_LSYM:
4983 	    case C_PSYM:
4984 	    case C_RSYM:
4985 	    case C_RPSYM:
4986 	    case C_STSYM:
4987 	    case C_TCSYM:
4988 	    case C_BCOMM:
4989 	    case C_ECOML:
4990 	    case C_ECOMM:
4991 	    case C_DECL:
4992 	    case C_ENTRY:
4993 	    case C_FUN:
4994 	    case C_ESTAT:
4995 #endif
4996 	      dst->symbol.flags = BSF_DEBUGGING;
4997 	      dst->symbol.value = (src->u.syment.n_value);
4998 	      break;
4999 
5000 #ifdef RS6000COFF_C
5001 	    case C_BINCL:	/* Beginning of include file.  */
5002 	    case C_EINCL:	/* Ending of include file.  */
5003 	      /* The value is actually a pointer into the line numbers
5004 		 of the file.  We locate the line number entry, and
5005 		 set the section to the section which contains it, and
5006 		 the value to the index in that section.  */
5007 	      {
5008 		asection *sec;
5009 
5010 		dst->symbol.flags = BSF_DEBUGGING;
5011 		for (sec = abfd->sections; sec != NULL; sec = sec->next)
5012 		  if (sec->line_filepos <= (file_ptr) src->u.syment.n_value
5013 		      && ((file_ptr) (sec->line_filepos
5014 				      + sec->lineno_count * bfd_coff_linesz (abfd))
5015 			  > (file_ptr) src->u.syment.n_value))
5016 		    break;
5017 		if (sec == NULL)
5018 		  dst->symbol.value = 0;
5019 		else
5020 		  {
5021 		    dst->symbol.section = sec;
5022 		    dst->symbol.value = ((src->u.syment.n_value
5023 					  - sec->line_filepos)
5024 					 / bfd_coff_linesz (abfd));
5025 		    src->fix_line = 1;
5026 		  }
5027 	      }
5028 	      break;
5029 
5030 	    case C_BSTAT:
5031 	      dst->symbol.flags = BSF_DEBUGGING;
5032 
5033 	      /* The value is actually a symbol index.  Save a pointer
5034 		 to the symbol instead of the index.  FIXME: This
5035 		 should use a union.  */
5036 	      src->u.syment.n_value =
5037 		(long) (intptr_t) (native_symbols + src->u.syment.n_value);
5038 	      dst->symbol.value = src->u.syment.n_value;
5039 	      src->fix_value = 1;
5040 	      break;
5041 #endif
5042 
5043 	    case C_BLOCK:	/* ".bb" or ".eb".  */
5044 	    case C_FCN:		/* ".bf" or ".ef" (or PE ".lf").  */
5045 	    case C_EFCN:	/* Physical end of function.  */
5046 #if defined COFF_WITH_PE
5047 	      /* PE sets the symbol to a value relative to the start
5048 		 of the section.  */
5049 	      dst->symbol.value = src->u.syment.n_value;
5050 	      if (strcmp (dst->symbol.name, ".bf") != 0)
5051 		{
5052 		  /* PE uses funny values for .ef and .lf; don't
5053 		     relocate them.  */
5054 		  dst->symbol.flags = BSF_DEBUGGING;
5055 		}
5056 	      else
5057 		dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC;
5058 #else
5059 	      /* Base the value as an index from the base of the
5060 		 section.  */
5061 	      dst->symbol.flags = BSF_LOCAL;
5062 	      dst->symbol.value = (src->u.syment.n_value
5063 				   - dst->symbol.section->vma);
5064 #endif
5065 	      break;
5066 
5067 	    case C_STATLAB:	/* Static load time label.  */
5068 	      dst->symbol.value = src->u.syment.n_value;
5069 	      dst->symbol.flags = BSF_GLOBAL;
5070 	      break;
5071 
5072 	    case C_NULL:
5073 	      /* PE DLLs sometimes have zeroed out symbols for some
5074 		 reason.  Just ignore them without a warning.  */
5075 	      if (src->u.syment.n_type == 0
5076 		  && src->u.syment.n_value == 0
5077 		  && src->u.syment.n_scnum == 0)
5078 		break;
5079 #ifdef RS6000COFF_C
5080 	      /* XCOFF specific: deleted entry.  */
5081 	      if (src->u.syment.n_value == C_NULL_VALUE)
5082 		break;
5083 #endif
5084 	      /* Fall through.  */
5085 	    case C_EXTDEF:	/* External definition.  */
5086 	    case C_ULABEL:	/* Undefined label.  */
5087 	    case C_USTATIC:	/* Undefined static.  */
5088 #ifndef COFF_WITH_PE
5089 	    /* C_LINE in regular coff is 0x68.  NT has taken over this storage
5090 	       class to represent a section symbol.  */
5091 	    case C_LINE:	/* line # reformatted as symbol table entry.  */
5092 	      /* NT uses 0x67 for a weak symbol, not C_ALIAS.  */
5093 	    case C_ALIAS:	/* Duplicate tag.  */
5094 #endif
5095 	      /* New storage classes for TI COFF.  */
5096 #if defined(TIC80COFF) || defined(TICOFF)
5097 	    case C_UEXT:	/* Tentative external definition.  */
5098 #endif
5099 	    case C_EXTLAB:	/* External load time label.  */
5100 	    default:
5101 	      _bfd_error_handler
5102 		/* xgettext:c-format */
5103 		(_("%B: Unrecognized storage class %d for %s symbol `%s'"),
5104 		 abfd, src->u.syment.n_sclass,
5105 		 dst->symbol.section->name, dst->symbol.name);
5106 	      ret = FALSE;
5107 	      /* Fall through.  */
5108 	    case C_HIDDEN:	/* Ext symbol in dmert public lib.  */
5109 	      /* PR 20722: These symbols can also be generated by
5110 		 building DLLs with --gc-sections enabled.  */
5111 	      dst->symbol.flags = BSF_DEBUGGING;
5112 	      dst->symbol.value = (src->u.syment.n_value);
5113 	      break;
5114 	    }
5115 
5116 	  dst->native = src;
5117 	  dst->symbol.udata.i = 0;
5118 	  dst->lineno = NULL;
5119 
5120 	  this_index += (src->u.syment.n_numaux) + 1;
5121 	  dst++;
5122 	  number_of_symbols++;
5123 	}
5124     }
5125 
5126   obj_symbols (abfd) = cached_area;
5127   obj_raw_syments (abfd) = native_symbols;
5128 
5129   bfd_get_symcount (abfd) = number_of_symbols;
5130   obj_convert (abfd) = table_ptr;
5131   /* Slurp the line tables for each section too.  */
5132   {
5133     asection *p;
5134 
5135     p = abfd->sections;
5136     while (p)
5137       {
5138 	if (! coff_slurp_line_table (abfd, p))
5139 	  return FALSE;
5140 	p = p->next;
5141       }
5142   }
5143 
5144   return ret;
5145 }
5146 
5147 /* Classify a COFF symbol.  A couple of targets have globally visible
5148    symbols which are not class C_EXT, and this handles those.  It also
5149    recognizes some special PE cases.  */
5150 
5151 static enum coff_symbol_classification
coff_classify_symbol(bfd * abfd,struct internal_syment * syment)5152 coff_classify_symbol (bfd *abfd,
5153 		      struct internal_syment *syment)
5154 {
5155   /* FIXME: This partially duplicates the switch in
5156      coff_slurp_symbol_table.  */
5157   switch (syment->n_sclass)
5158     {
5159     case C_EXT:
5160     case C_WEAKEXT:
5161 #ifdef I960
5162     case C_LEAFEXT:
5163 #endif
5164 #ifdef ARM
5165     case C_THUMBEXT:
5166     case C_THUMBEXTFUNC:
5167 #endif
5168 #ifdef C_SYSTEM
5169     case C_SYSTEM:
5170 #endif
5171 #ifdef COFF_WITH_PE
5172     case C_NT_WEAK:
5173 #endif
5174       if (syment->n_scnum == 0)
5175 	{
5176 	  if (syment->n_value == 0)
5177 	    return COFF_SYMBOL_UNDEFINED;
5178 	  else
5179 	    return COFF_SYMBOL_COMMON;
5180 	}
5181       return COFF_SYMBOL_GLOBAL;
5182 
5183     default:
5184       break;
5185     }
5186 
5187 #ifdef COFF_WITH_PE
5188   if (syment->n_sclass == C_STAT)
5189     {
5190       if (syment->n_scnum == 0)
5191 	/* The Microsoft compiler sometimes generates these if a
5192 	   small static function is inlined every time it is used.
5193 	   The function is discarded, but the symbol table entry
5194 	   remains.  */
5195 	return COFF_SYMBOL_LOCAL;
5196 
5197 #ifdef STRICT_PE_FORMAT
5198       /* This is correct for Microsoft generated objects, but it
5199 	 breaks gas generated objects.  */
5200       if (syment->n_value == 0)
5201 	{
5202 	  asection *sec;
5203 	  char * name;
5204 	  char buf[SYMNMLEN + 1];
5205 
5206 	  name = _bfd_coff_internal_syment_name (abfd, syment, buf)
5207 	  sec = coff_section_from_bfd_index (abfd, syment->n_scnum);
5208 	  if (sec != NULL && name != NULL
5209 	      && (strcmp (bfd_get_section_name (abfd, sec), name) == 0))
5210 	    return COFF_SYMBOL_PE_SECTION;
5211 	}
5212 #endif
5213 
5214       return COFF_SYMBOL_LOCAL;
5215     }
5216 
5217   if (syment->n_sclass == C_SECTION)
5218     {
5219       /* In some cases in a DLL generated by the Microsoft linker, the
5220 	 n_value field will contain garbage.  FIXME: This should
5221 	 probably be handled by the swapping function instead.  */
5222       syment->n_value = 0;
5223       if (syment->n_scnum == 0)
5224 	return COFF_SYMBOL_UNDEFINED;
5225       return COFF_SYMBOL_PE_SECTION;
5226     }
5227 #endif /* COFF_WITH_PE */
5228 
5229   /* If it is not a global symbol, we presume it is a local symbol.  */
5230   if (syment->n_scnum == 0)
5231     {
5232       char buf[SYMNMLEN + 1];
5233 
5234       _bfd_error_handler
5235 	/* xgettext:c-format */
5236 	(_("warning: %B: local symbol `%s' has no section"),
5237 	 abfd, _bfd_coff_internal_syment_name (abfd, syment, buf));
5238     }
5239 
5240   return COFF_SYMBOL_LOCAL;
5241 }
5242 
5243 /*
5244 SUBSUBSECTION
5245 	Reading relocations
5246 
5247 	Coff relocations are easily transformed into the internal BFD form
5248 	(@code{arelent}).
5249 
5250 	Reading a coff relocation table is done in the following stages:
5251 
5252 	o Read the entire coff relocation table into memory.
5253 
5254 	o Process each relocation in turn; first swap it from the
5255 	external to the internal form.
5256 
5257 	o Turn the symbol referenced in the relocation's symbol index
5258 	into a pointer into the canonical symbol table.
5259 	This table is the same as the one returned by a call to
5260 	@code{bfd_canonicalize_symtab}. The back end will call that
5261 	routine and save the result if a canonicalization hasn't been done.
5262 
5263 	o The reloc index is turned into a pointer to a howto
5264 	structure, in a back end specific way. For instance, the 386
5265 	and 960 use the @code{r_type} to directly produce an index
5266 	into a howto table vector; the 88k subtracts a number from the
5267 	@code{r_type} field and creates an addend field.
5268 */
5269 
5270 #ifndef CALC_ADDEND
5271 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr)		\
5272   {								\
5273     coff_symbol_type *coffsym = NULL;				\
5274 								\
5275     if (ptr && bfd_asymbol_bfd (ptr) != abfd)			\
5276       coffsym = (obj_symbols (abfd)				\
5277 		 + (cache_ptr->sym_ptr_ptr - symbols));		\
5278     else if (ptr)						\
5279       coffsym = coff_symbol_from (ptr);				\
5280     if (coffsym != NULL						\
5281 	&& coffsym->native->is_sym				\
5282 	&& coffsym->native->u.syment.n_scnum == 0)		\
5283       cache_ptr->addend = 0;					\
5284     else if (ptr && bfd_asymbol_bfd (ptr) == abfd		\
5285 	     && ptr->section != NULL)				\
5286       cache_ptr->addend = - (ptr->section->vma + ptr->value);	\
5287     else							\
5288       cache_ptr->addend = 0;					\
5289   }
5290 #endif
5291 
5292 static bfd_boolean
coff_slurp_reloc_table(bfd * abfd,sec_ptr asect,asymbol ** symbols)5293 coff_slurp_reloc_table (bfd * abfd, sec_ptr asect, asymbol ** symbols)
5294 {
5295   RELOC *native_relocs;
5296   arelent *reloc_cache;
5297   arelent *cache_ptr;
5298   unsigned int idx;
5299   bfd_size_type amt;
5300 
5301   if (asect->relocation)
5302     return TRUE;
5303   if (asect->reloc_count == 0)
5304     return TRUE;
5305   if (asect->flags & SEC_CONSTRUCTOR)
5306     return TRUE;
5307   if (!coff_slurp_symbol_table (abfd))
5308     return FALSE;
5309 
5310   amt = (bfd_size_type) bfd_coff_relsz (abfd) * asect->reloc_count;
5311   native_relocs = (RELOC *) buy_and_read (abfd, asect->rel_filepos, amt);
5312   amt = (bfd_size_type) asect->reloc_count * sizeof (arelent);
5313   reloc_cache = (arelent *) bfd_alloc (abfd, amt);
5314 
5315   if (reloc_cache == NULL || native_relocs == NULL)
5316     return FALSE;
5317 
5318   for (idx = 0; idx < asect->reloc_count; idx++)
5319     {
5320       struct internal_reloc dst;
5321       struct external_reloc *src;
5322 #ifndef RELOC_PROCESSING
5323       asymbol *ptr;
5324 #endif
5325 
5326       cache_ptr = reloc_cache + idx;
5327       src = native_relocs + idx;
5328 
5329       dst.r_offset = 0;
5330       coff_swap_reloc_in (abfd, src, &dst);
5331 
5332 #ifdef RELOC_PROCESSING
5333       RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
5334 #else
5335       cache_ptr->address = dst.r_vaddr;
5336 
5337       if (dst.r_symndx != -1 && symbols != NULL)
5338 	{
5339 	  if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd))
5340 	    {
5341 	      _bfd_error_handler
5342 		/* xgettext:c-format */
5343 		(_("%B: warning: illegal symbol index %ld in relocs"),
5344 		 abfd, dst.r_symndx);
5345 	      cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5346 	      ptr = NULL;
5347 	    }
5348 	  else
5349 	    {
5350 	      cache_ptr->sym_ptr_ptr = (symbols
5351 					+ obj_convert (abfd)[dst.r_symndx]);
5352 	      ptr = *(cache_ptr->sym_ptr_ptr);
5353 	    }
5354 	}
5355       else
5356 	{
5357 	  cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5358 	  ptr = NULL;
5359 	}
5360 
5361       /* The symbols definitions that we have read in have been
5362 	 relocated as if their sections started at 0. But the offsets
5363 	 refering to the symbols in the raw data have not been
5364 	 modified, so we have to have a negative addend to compensate.
5365 
5366 	 Note that symbols which used to be common must be left alone.  */
5367 
5368       /* Calculate any reloc addend by looking at the symbol.  */
5369       CALC_ADDEND (abfd, ptr, dst, cache_ptr);
5370       (void) ptr;
5371 
5372       cache_ptr->address -= asect->vma;
5373       /* !! cache_ptr->section = NULL;*/
5374 
5375       /* Fill in the cache_ptr->howto field from dst.r_type.  */
5376       RTYPE2HOWTO (cache_ptr, &dst);
5377 #endif	/* RELOC_PROCESSING */
5378 
5379       if (cache_ptr->howto == NULL)
5380 	{
5381 	  _bfd_error_handler
5382 	    /* xgettext:c-format */
5383 	    (_("%B: illegal relocation type %d at address %#Lx"),
5384 	     abfd, dst.r_type, dst.r_vaddr);
5385 	  bfd_set_error (bfd_error_bad_value);
5386 	  return FALSE;
5387 	}
5388     }
5389 
5390   asect->relocation = reloc_cache;
5391   return TRUE;
5392 }
5393 
5394 #ifndef coff_rtype_to_howto
5395 #ifdef RTYPE2HOWTO
5396 
5397 /* Get the howto structure for a reloc.  This is only used if the file
5398    including this one defines coff_relocate_section to be
5399    _bfd_coff_generic_relocate_section, so it is OK if it does not
5400    always work.  It is the responsibility of the including file to
5401    make sure it is reasonable if it is needed.  */
5402 
5403 static reloc_howto_type *
coff_rtype_to_howto(bfd * abfd ATTRIBUTE_UNUSED,asection * sec ATTRIBUTE_UNUSED,struct internal_reloc * rel ATTRIBUTE_UNUSED,struct coff_link_hash_entry * h ATTRIBUTE_UNUSED,struct internal_syment * sym ATTRIBUTE_UNUSED,bfd_vma * addendp ATTRIBUTE_UNUSED)5404 coff_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
5405 		     asection *sec ATTRIBUTE_UNUSED,
5406 		     struct internal_reloc *rel ATTRIBUTE_UNUSED,
5407 		     struct coff_link_hash_entry *h ATTRIBUTE_UNUSED,
5408 		     struct internal_syment *sym ATTRIBUTE_UNUSED,
5409 		     bfd_vma *addendp ATTRIBUTE_UNUSED)
5410 {
5411   arelent genrel;
5412 
5413   genrel.howto = NULL;
5414   RTYPE2HOWTO (&genrel, rel);
5415   return genrel.howto;
5416 }
5417 
5418 #else /* ! defined (RTYPE2HOWTO) */
5419 
5420 #define coff_rtype_to_howto NULL
5421 
5422 #endif /* ! defined (RTYPE2HOWTO) */
5423 #endif /* ! defined (coff_rtype_to_howto) */
5424 
5425 /* This is stupid.  This function should be a boolean predicate.  */
5426 
5427 static long
coff_canonicalize_reloc(bfd * abfd,sec_ptr section,arelent ** relptr,asymbol ** symbols)5428 coff_canonicalize_reloc (bfd * abfd,
5429 			 sec_ptr section,
5430 			 arelent ** relptr,
5431 			 asymbol ** symbols)
5432 {
5433   arelent *tblptr = section->relocation;
5434   unsigned int count = 0;
5435 
5436   if (section->flags & SEC_CONSTRUCTOR)
5437     {
5438       /* This section has relocs made up by us, they are not in the
5439 	 file, so take them out of their chain and place them into
5440 	 the data area provided.  */
5441       arelent_chain *chain = section->constructor_chain;
5442 
5443       for (count = 0; count < section->reloc_count; count++)
5444 	{
5445 	  *relptr++ = &chain->relent;
5446 	  chain = chain->next;
5447 	}
5448     }
5449   else
5450     {
5451       if (! coff_slurp_reloc_table (abfd, section, symbols))
5452 	return -1;
5453 
5454       tblptr = section->relocation;
5455 
5456       for (; count++ < section->reloc_count;)
5457 	*relptr++ = tblptr++;
5458     }
5459   *relptr = 0;
5460   return section->reloc_count;
5461 }
5462 
5463 #ifndef coff_set_reloc
5464 #define coff_set_reloc _bfd_generic_set_reloc
5465 #endif
5466 
5467 #ifndef coff_reloc16_estimate
5468 #define coff_reloc16_estimate dummy_reloc16_estimate
5469 
5470 static int
dummy_reloc16_estimate(bfd * abfd ATTRIBUTE_UNUSED,asection * input_section ATTRIBUTE_UNUSED,arelent * reloc ATTRIBUTE_UNUSED,unsigned int shrink ATTRIBUTE_UNUSED,struct bfd_link_info * link_info ATTRIBUTE_UNUSED)5471 dummy_reloc16_estimate (bfd *abfd ATTRIBUTE_UNUSED,
5472 			asection *input_section ATTRIBUTE_UNUSED,
5473 			arelent *reloc ATTRIBUTE_UNUSED,
5474 			unsigned int shrink ATTRIBUTE_UNUSED,
5475 			struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
5476 {
5477   abort ();
5478   return 0;
5479 }
5480 
5481 #endif
5482 
5483 #ifndef coff_reloc16_extra_cases
5484 
5485 #define coff_reloc16_extra_cases dummy_reloc16_extra_cases
5486 
5487 /* This works even if abort is not declared in any header file.  */
5488 
5489 static void
dummy_reloc16_extra_cases(bfd * abfd ATTRIBUTE_UNUSED,struct bfd_link_info * link_info ATTRIBUTE_UNUSED,struct bfd_link_order * link_order ATTRIBUTE_UNUSED,arelent * reloc ATTRIBUTE_UNUSED,bfd_byte * data ATTRIBUTE_UNUSED,unsigned int * src_ptr ATTRIBUTE_UNUSED,unsigned int * dst_ptr ATTRIBUTE_UNUSED)5490 dummy_reloc16_extra_cases (bfd *abfd ATTRIBUTE_UNUSED,
5491 			   struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
5492 			   struct bfd_link_order *link_order ATTRIBUTE_UNUSED,
5493 			   arelent *reloc ATTRIBUTE_UNUSED,
5494 			   bfd_byte *data ATTRIBUTE_UNUSED,
5495 			   unsigned int *src_ptr ATTRIBUTE_UNUSED,
5496 			   unsigned int *dst_ptr ATTRIBUTE_UNUSED)
5497 {
5498   abort ();
5499 }
5500 #endif
5501 
5502 /* If coff_relocate_section is defined, we can use the optimized COFF
5503    backend linker.  Otherwise we must continue to use the old linker.  */
5504 
5505 #ifdef coff_relocate_section
5506 
5507 #ifndef coff_bfd_link_hash_table_create
5508 #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
5509 #endif
5510 #ifndef coff_bfd_link_add_symbols
5511 #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
5512 #endif
5513 #ifndef coff_bfd_final_link
5514 #define coff_bfd_final_link _bfd_coff_final_link
5515 #endif
5516 
5517 #else /* ! defined (coff_relocate_section) */
5518 
5519 #define coff_relocate_section NULL
5520 #ifndef coff_bfd_link_hash_table_create
5521 #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
5522 #endif
5523 #ifndef coff_bfd_link_add_symbols
5524 #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
5525 #endif
5526 #define coff_bfd_final_link _bfd_generic_final_link
5527 
5528 #endif /* ! defined (coff_relocate_section) */
5529 
5530 #define coff_bfd_link_just_syms      _bfd_generic_link_just_syms
5531 #define coff_bfd_copy_link_hash_symbol_type \
5532   _bfd_generic_copy_link_hash_symbol_type
5533 #define coff_bfd_link_split_section  _bfd_generic_link_split_section
5534 
5535 #define coff_bfd_link_check_relocs   _bfd_generic_link_check_relocs
5536 
5537 #ifndef coff_start_final_link
5538 #define coff_start_final_link NULL
5539 #endif
5540 
5541 #ifndef coff_adjust_symndx
5542 #define coff_adjust_symndx NULL
5543 #endif
5544 
5545 #ifndef coff_link_add_one_symbol
5546 #define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol
5547 #endif
5548 
5549 #ifndef coff_link_output_has_begun
5550 
5551 static bfd_boolean
coff_link_output_has_begun(bfd * abfd,struct coff_final_link_info * info ATTRIBUTE_UNUSED)5552 coff_link_output_has_begun (bfd * abfd,
5553 			    struct coff_final_link_info * info ATTRIBUTE_UNUSED)
5554 {
5555   return abfd->output_has_begun;
5556 }
5557 #endif
5558 
5559 #ifndef coff_final_link_postscript
5560 
5561 static bfd_boolean
coff_final_link_postscript(bfd * abfd ATTRIBUTE_UNUSED,struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED)5562 coff_final_link_postscript (bfd * abfd ATTRIBUTE_UNUSED,
5563 			    struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED)
5564 {
5565   return TRUE;
5566 }
5567 #endif
5568 
5569 #ifndef coff_SWAP_aux_in
5570 #define coff_SWAP_aux_in coff_swap_aux_in
5571 #endif
5572 #ifndef coff_SWAP_sym_in
5573 #define coff_SWAP_sym_in coff_swap_sym_in
5574 #endif
5575 #ifndef coff_SWAP_lineno_in
5576 #define coff_SWAP_lineno_in coff_swap_lineno_in
5577 #endif
5578 #ifndef coff_SWAP_aux_out
5579 #define coff_SWAP_aux_out coff_swap_aux_out
5580 #endif
5581 #ifndef coff_SWAP_sym_out
5582 #define coff_SWAP_sym_out coff_swap_sym_out
5583 #endif
5584 #ifndef coff_SWAP_lineno_out
5585 #define coff_SWAP_lineno_out coff_swap_lineno_out
5586 #endif
5587 #ifndef coff_SWAP_reloc_out
5588 #define coff_SWAP_reloc_out coff_swap_reloc_out
5589 #endif
5590 #ifndef coff_SWAP_filehdr_out
5591 #define coff_SWAP_filehdr_out coff_swap_filehdr_out
5592 #endif
5593 #ifndef coff_SWAP_aouthdr_out
5594 #define coff_SWAP_aouthdr_out coff_swap_aouthdr_out
5595 #endif
5596 #ifndef coff_SWAP_scnhdr_out
5597 #define coff_SWAP_scnhdr_out coff_swap_scnhdr_out
5598 #endif
5599 #ifndef coff_SWAP_reloc_in
5600 #define coff_SWAP_reloc_in coff_swap_reloc_in
5601 #endif
5602 #ifndef coff_SWAP_filehdr_in
5603 #define coff_SWAP_filehdr_in coff_swap_filehdr_in
5604 #endif
5605 #ifndef coff_SWAP_aouthdr_in
5606 #define coff_SWAP_aouthdr_in coff_swap_aouthdr_in
5607 #endif
5608 #ifndef coff_SWAP_scnhdr_in
5609 #define coff_SWAP_scnhdr_in coff_swap_scnhdr_in
5610 #endif
5611 
5612 static bfd_coff_backend_data bfd_coff_std_swap_table ATTRIBUTE_UNUSED =
5613 {
5614   coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5615   coff_SWAP_aux_out, coff_SWAP_sym_out,
5616   coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5617   coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5618   coff_SWAP_scnhdr_out,
5619   FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5620 #ifdef COFF_LONG_FILENAMES
5621   TRUE,
5622 #else
5623   FALSE,
5624 #endif
5625   COFF_DEFAULT_LONG_SECTION_NAMES,
5626   COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5627 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5628   TRUE,
5629 #else
5630   FALSE,
5631 #endif
5632 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5633   4,
5634 #else
5635   2,
5636 #endif
5637   32768,
5638   coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5639   coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5640   coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5641   coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5642   coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5643   coff_classify_symbol, coff_compute_section_file_positions,
5644   coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5645   coff_adjust_symndx, coff_link_add_one_symbol,
5646   coff_link_output_has_begun, coff_final_link_postscript,
5647   bfd_pe_print_pdata
5648 };
5649 
5650 #ifdef TICOFF
5651 /* COFF0 differs in file/section header size and relocation entry size.  */
5652 
5653 static bfd_coff_backend_data ticoff0_swap_table =
5654 {
5655   coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5656   coff_SWAP_aux_out, coff_SWAP_sym_out,
5657   coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5658   coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5659   coff_SWAP_scnhdr_out,
5660   FILHSZ_V0, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ_V0, LINESZ, FILNMLEN,
5661 #ifdef COFF_LONG_FILENAMES
5662   TRUE,
5663 #else
5664   FALSE,
5665 #endif
5666   COFF_DEFAULT_LONG_SECTION_NAMES,
5667   COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5668 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5669   TRUE,
5670 #else
5671   FALSE,
5672 #endif
5673 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5674   4,
5675 #else
5676   2,
5677 #endif
5678   32768,
5679   coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5680   coff_SWAP_reloc_in, ticoff0_bad_format_hook, coff_set_arch_mach_hook,
5681   coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5682   coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5683   coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5684   coff_classify_symbol, coff_compute_section_file_positions,
5685   coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5686   coff_adjust_symndx, coff_link_add_one_symbol,
5687   coff_link_output_has_begun, coff_final_link_postscript,
5688   bfd_pe_print_pdata
5689 };
5690 #endif
5691 
5692 #ifdef TICOFF
5693 /* COFF1 differs in section header size.  */
5694 
5695 static bfd_coff_backend_data ticoff1_swap_table =
5696 {
5697   coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in,
5698   coff_SWAP_aux_out, coff_SWAP_sym_out,
5699   coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5700   coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out,
5701   coff_SWAP_scnhdr_out,
5702   FILHSZ, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
5703 #ifdef COFF_LONG_FILENAMES
5704   TRUE,
5705 #else
5706   FALSE,
5707 #endif
5708   COFF_DEFAULT_LONG_SECTION_NAMES,
5709   COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5710 #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
5711   TRUE,
5712 #else
5713   FALSE,
5714 #endif
5715 #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
5716   4,
5717 #else
5718   2,
5719 #endif
5720   32768,
5721   coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5722   coff_SWAP_reloc_in, ticoff1_bad_format_hook, coff_set_arch_mach_hook,
5723   coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5724   coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5725   coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5726   coff_classify_symbol, coff_compute_section_file_positions,
5727   coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5728   coff_adjust_symndx, coff_link_add_one_symbol,
5729   coff_link_output_has_begun, coff_final_link_postscript,
5730   bfd_pe_print_pdata	/* huh */
5731 };
5732 #endif
5733 
5734 #ifdef COFF_WITH_PE_BIGOBJ
5735 /* The UID for bigobj files.  */
5736 
5737 static const char header_bigobj_classid[16] =
5738 {
5739   0xC7, 0xA1, 0xBA, 0xD1,
5740   0xEE, 0xBA,
5741   0xa9, 0x4b,
5742   0xAF, 0x20,
5743   0xFA, 0xF6, 0x6A, 0xA4, 0xDC, 0xB8
5744 };
5745 
5746 /* Swap routines.  */
5747 
5748 static void
coff_bigobj_swap_filehdr_in(bfd * abfd,void * src,void * dst)5749 coff_bigobj_swap_filehdr_in (bfd * abfd, void * src, void * dst)
5750 {
5751   struct external_ANON_OBJECT_HEADER_BIGOBJ *filehdr_src =
5752     (struct external_ANON_OBJECT_HEADER_BIGOBJ *) src;
5753   struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst;
5754 
5755   filehdr_dst->f_magic  = H_GET_16 (abfd, filehdr_src->Machine);
5756   filehdr_dst->f_nscns  = H_GET_32 (abfd, filehdr_src->NumberOfSections);
5757   filehdr_dst->f_timdat = H_GET_32 (abfd, filehdr_src->TimeDateStamp);
5758   filehdr_dst->f_symptr =
5759     GET_FILEHDR_SYMPTR (abfd, filehdr_src->PointerToSymbolTable);
5760   filehdr_dst->f_nsyms  = H_GET_32 (abfd, filehdr_src->NumberOfSymbols);
5761   filehdr_dst->f_opthdr = 0;
5762   filehdr_dst->f_flags  = 0;
5763 
5764   /* Check other magic numbers.  */
5765   if (H_GET_16 (abfd, filehdr_src->Sig1) != IMAGE_FILE_MACHINE_UNKNOWN
5766       || H_GET_16 (abfd, filehdr_src->Sig2) != 0xffff
5767       || H_GET_16 (abfd, filehdr_src->Version) != 2
5768       || memcmp (filehdr_src->ClassID, header_bigobj_classid, 16) != 0)
5769     filehdr_dst->f_opthdr = 0xffff;
5770 
5771   /* Note that CLR metadata are ignored.  */
5772 }
5773 
5774 static unsigned int
coff_bigobj_swap_filehdr_out(bfd * abfd,void * in,void * out)5775 coff_bigobj_swap_filehdr_out (bfd *abfd, void * in, void * out)
5776 {
5777   struct internal_filehdr *filehdr_in = (struct internal_filehdr *) in;
5778   struct external_ANON_OBJECT_HEADER_BIGOBJ *filehdr_out =
5779     (struct external_ANON_OBJECT_HEADER_BIGOBJ *) out;
5780 
5781   memset (filehdr_out, 0, sizeof (*filehdr_out));
5782 
5783   H_PUT_16 (abfd, IMAGE_FILE_MACHINE_UNKNOWN, filehdr_out->Sig1);
5784   H_PUT_16 (abfd, 0xffff, filehdr_out->Sig2);
5785   H_PUT_16 (abfd, 2, filehdr_out->Version);
5786   memcpy (filehdr_out->ClassID, header_bigobj_classid, 16);
5787   H_PUT_16 (abfd, filehdr_in->f_magic, filehdr_out->Machine);
5788   H_PUT_32 (abfd, filehdr_in->f_nscns, filehdr_out->NumberOfSections);
5789   H_PUT_32 (abfd, filehdr_in->f_timdat, filehdr_out->TimeDateStamp);
5790   PUT_FILEHDR_SYMPTR (abfd, filehdr_in->f_symptr,
5791 		      filehdr_out->PointerToSymbolTable);
5792   H_PUT_32 (abfd, filehdr_in->f_nsyms, filehdr_out->NumberOfSymbols);
5793 
5794   return bfd_coff_filhsz (abfd);
5795 }
5796 
5797 static void
coff_bigobj_swap_sym_in(bfd * abfd,void * ext1,void * in1)5798 coff_bigobj_swap_sym_in (bfd * abfd, void * ext1, void * in1)
5799 {
5800   SYMENT_BIGOBJ *ext = (SYMENT_BIGOBJ *) ext1;
5801   struct internal_syment *in = (struct internal_syment *) in1;
5802 
5803   if (ext->e.e_name[0] == 0)
5804     {
5805       in->_n._n_n._n_zeroes = 0;
5806       in->_n._n_n._n_offset = H_GET_32 (abfd, ext->e.e.e_offset);
5807     }
5808   else
5809     {
5810 #if SYMNMLEN != E_SYMNMLEN
5811 #error we need to cope with truncating or extending SYMNMLEN
5812 #else
5813       memcpy (in->_n._n_name, ext->e.e_name, SYMNMLEN);
5814 #endif
5815     }
5816 
5817   in->n_value = H_GET_32 (abfd, ext->e_value);
5818   BFD_ASSERT (sizeof (in->n_scnum) >= 4);
5819   in->n_scnum = H_GET_32 (abfd, ext->e_scnum);
5820   in->n_type = H_GET_16 (abfd, ext->e_type);
5821   in->n_sclass = H_GET_8 (abfd, ext->e_sclass);
5822   in->n_numaux = H_GET_8 (abfd, ext->e_numaux);
5823 }
5824 
5825 static unsigned int
coff_bigobj_swap_sym_out(bfd * abfd,void * inp,void * extp)5826 coff_bigobj_swap_sym_out (bfd * abfd, void * inp, void * extp)
5827 {
5828   struct internal_syment *in = (struct internal_syment *) inp;
5829   SYMENT_BIGOBJ *ext = (SYMENT_BIGOBJ *) extp;
5830 
5831   if (in->_n._n_name[0] == 0)
5832     {
5833       H_PUT_32 (abfd, 0, ext->e.e.e_zeroes);
5834       H_PUT_32 (abfd, in->_n._n_n._n_offset, ext->e.e.e_offset);
5835     }
5836   else
5837     {
5838 #if SYMNMLEN != E_SYMNMLEN
5839 #error we need to cope with truncating or extending SYMNMLEN
5840 #else
5841       memcpy (ext->e.e_name, in->_n._n_name, SYMNMLEN);
5842 #endif
5843     }
5844 
5845   H_PUT_32 (abfd, in->n_value, ext->e_value);
5846   H_PUT_32 (abfd, in->n_scnum, ext->e_scnum);
5847 
5848   H_PUT_16 (abfd, in->n_type, ext->e_type);
5849   H_PUT_8 (abfd, in->n_sclass, ext->e_sclass);
5850   H_PUT_8 (abfd, in->n_numaux, ext->e_numaux);
5851 
5852   return SYMESZ_BIGOBJ;
5853 }
5854 
5855 static void
coff_bigobj_swap_aux_in(bfd * abfd,void * ext1,int type,int in_class,int indx,int numaux,void * in1)5856 coff_bigobj_swap_aux_in (bfd *abfd,
5857 			 void * ext1,
5858 			 int type,
5859 			 int in_class,
5860 			 int indx,
5861 			 int numaux,
5862 			 void * in1)
5863 {
5864   AUXENT_BIGOBJ *ext = (AUXENT_BIGOBJ *) ext1;
5865   union internal_auxent *in = (union internal_auxent *) in1;
5866 
5867   switch (in_class)
5868     {
5869     case C_FILE:
5870       if (numaux > 1)
5871 	{
5872 	  if (indx == 0)
5873 	    memcpy (in->x_file.x_fname, ext->File.Name,
5874 		    numaux * sizeof (AUXENT_BIGOBJ));
5875 	}
5876       else
5877 	memcpy (in->x_file.x_fname, ext->File.Name, sizeof (ext->File.Name));
5878       break;
5879 
5880     case C_STAT:
5881     case C_LEAFSTAT:
5882     case C_HIDDEN:
5883       if (type == T_NULL)
5884 	{
5885 	  in->x_scn.x_scnlen = H_GET_32 (abfd, ext->Section.Length);
5886 	  in->x_scn.x_nreloc =
5887 	    H_GET_16 (abfd, ext->Section.NumberOfRelocations);
5888 	  in->x_scn.x_nlinno =
5889 	    H_GET_16 (abfd, ext->Section.NumberOfLinenumbers);
5890 	  in->x_scn.x_checksum = H_GET_32 (abfd, ext->Section.Checksum);
5891 	  in->x_scn.x_associated = H_GET_16 (abfd, ext->Section.Number)
5892 	    | (H_GET_16 (abfd, ext->Section.HighNumber) << 16);
5893 	  in->x_scn.x_comdat = H_GET_8 (abfd, ext->Section.Selection);
5894 	  return;
5895 	}
5896       break;
5897 
5898     default:
5899       in->x_sym.x_tagndx.l = H_GET_32 (abfd, ext->Sym.WeakDefaultSymIndex);
5900       /* Characteristics is ignored.  */
5901       break;
5902     }
5903 }
5904 
5905 static unsigned int
coff_bigobj_swap_aux_out(bfd * abfd,void * inp,int type,int in_class,int indx ATTRIBUTE_UNUSED,int numaux ATTRIBUTE_UNUSED,void * extp)5906 coff_bigobj_swap_aux_out (bfd * abfd,
5907 			  void * inp,
5908 			  int type,
5909 			  int in_class,
5910 			  int indx ATTRIBUTE_UNUSED,
5911 			  int numaux ATTRIBUTE_UNUSED,
5912 			  void * extp)
5913 {
5914   union internal_auxent * in = (union internal_auxent *) inp;
5915   AUXENT_BIGOBJ *ext = (AUXENT_BIGOBJ *) extp;
5916 
5917   memset (ext, 0, AUXESZ);
5918 
5919   switch (in_class)
5920     {
5921     case C_FILE:
5922       memcpy (ext->File.Name, in->x_file.x_fname, sizeof (ext->File.Name));
5923 
5924       return AUXESZ;
5925 
5926     case C_STAT:
5927     case C_LEAFSTAT:
5928     case C_HIDDEN:
5929       if (type == T_NULL)
5930 	{
5931 	  H_PUT_32 (abfd, in->x_scn.x_scnlen, ext->Section.Length);
5932 	  H_PUT_16 (abfd, in->x_scn.x_nreloc,
5933 		    ext->Section.NumberOfRelocations);
5934 	  H_PUT_16 (abfd, in->x_scn.x_nlinno,
5935 		    ext->Section.NumberOfLinenumbers);
5936 	  H_PUT_32 (abfd, in->x_scn.x_checksum, ext->Section.Checksum);
5937 	  H_PUT_16 (abfd, in->x_scn.x_associated & 0xffff,
5938 		    ext->Section.Number);
5939 	  H_PUT_16 (abfd, (in->x_scn.x_associated >> 16),
5940 		    ext->Section.HighNumber);
5941 	  H_PUT_8 (abfd, in->x_scn.x_comdat, ext->Section.Selection);
5942 	  return AUXESZ;
5943 	}
5944       break;
5945     }
5946 
5947   H_PUT_32 (abfd, in->x_sym.x_tagndx.l, ext->Sym.WeakDefaultSymIndex);
5948   H_PUT_32 (abfd, 1, ext->Sym.WeakSearchType);
5949 
5950   return AUXESZ;
5951 }
5952 
5953 static bfd_coff_backend_data bigobj_swap_table =
5954 {
5955   coff_bigobj_swap_aux_in, coff_bigobj_swap_sym_in, coff_SWAP_lineno_in,
5956   coff_bigobj_swap_aux_out, coff_bigobj_swap_sym_out,
5957   coff_SWAP_lineno_out, coff_SWAP_reloc_out,
5958   coff_bigobj_swap_filehdr_out, coff_SWAP_aouthdr_out,
5959   coff_SWAP_scnhdr_out,
5960   FILHSZ_BIGOBJ, AOUTSZ, SCNHSZ, SYMESZ_BIGOBJ, AUXESZ_BIGOBJ,
5961    RELSZ, LINESZ, FILNMLEN_BIGOBJ,
5962   TRUE,
5963   COFF_DEFAULT_LONG_SECTION_NAMES,
5964   COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
5965   FALSE,
5966   2,
5967   1U << 31,
5968   coff_bigobj_swap_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
5969   coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
5970   coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
5971   coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
5972   coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
5973   coff_classify_symbol, coff_compute_section_file_positions,
5974   coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
5975   coff_adjust_symndx, coff_link_add_one_symbol,
5976   coff_link_output_has_begun, coff_final_link_postscript,
5977   bfd_pe_print_pdata	/* huh */
5978 };
5979 
5980 #endif /* COFF_WITH_PE_BIGOBJ */
5981 
5982 #ifndef coff_close_and_cleanup
5983 #define coff_close_and_cleanup		    _bfd_generic_close_and_cleanup
5984 #endif
5985 
5986 #ifndef coff_bfd_free_cached_info
5987 #define coff_bfd_free_cached_info	    _bfd_generic_bfd_free_cached_info
5988 #endif
5989 
5990 #ifndef coff_get_section_contents
5991 #define coff_get_section_contents	    _bfd_generic_get_section_contents
5992 #endif
5993 
5994 #ifndef coff_bfd_copy_private_symbol_data
5995 #define coff_bfd_copy_private_symbol_data   _bfd_generic_bfd_copy_private_symbol_data
5996 #endif
5997 
5998 #ifndef coff_bfd_copy_private_header_data
5999 #define coff_bfd_copy_private_header_data   _bfd_generic_bfd_copy_private_header_data
6000 #endif
6001 
6002 #ifndef coff_bfd_copy_private_section_data
6003 #define coff_bfd_copy_private_section_data  _bfd_generic_bfd_copy_private_section_data
6004 #endif
6005 
6006 #ifndef coff_bfd_copy_private_bfd_data
6007 #define coff_bfd_copy_private_bfd_data      _bfd_generic_bfd_copy_private_bfd_data
6008 #endif
6009 
6010 #ifndef coff_bfd_merge_private_bfd_data
6011 #define coff_bfd_merge_private_bfd_data     _bfd_generic_bfd_merge_private_bfd_data
6012 #endif
6013 
6014 #ifndef coff_bfd_set_private_flags
6015 #define coff_bfd_set_private_flags	    _bfd_generic_bfd_set_private_flags
6016 #endif
6017 
6018 #ifndef coff_bfd_print_private_bfd_data
6019 #define coff_bfd_print_private_bfd_data     _bfd_generic_bfd_print_private_bfd_data
6020 #endif
6021 
6022 #ifndef coff_bfd_is_local_label_name
6023 #define coff_bfd_is_local_label_name	    _bfd_coff_is_local_label_name
6024 #endif
6025 
6026 #ifndef coff_bfd_is_target_special_symbol
6027 #define coff_bfd_is_target_special_symbol   ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
6028 #endif
6029 
6030 #ifndef coff_read_minisymbols
6031 #define coff_read_minisymbols		    _bfd_generic_read_minisymbols
6032 #endif
6033 
6034 #ifndef coff_minisymbol_to_symbol
6035 #define coff_minisymbol_to_symbol	    _bfd_generic_minisymbol_to_symbol
6036 #endif
6037 
6038 /* The reloc lookup routine must be supplied by each individual COFF
6039    backend.  */
6040 #ifndef coff_bfd_reloc_type_lookup
6041 #define coff_bfd_reloc_type_lookup	    _bfd_norelocs_bfd_reloc_type_lookup
6042 #endif
6043 #ifndef coff_bfd_reloc_name_lookup
6044 #define coff_bfd_reloc_name_lookup    _bfd_norelocs_bfd_reloc_name_lookup
6045 #endif
6046 
6047 #ifndef coff_bfd_get_relocated_section_contents
6048 #define coff_bfd_get_relocated_section_contents \
6049   bfd_generic_get_relocated_section_contents
6050 #endif
6051 
6052 #ifndef coff_bfd_relax_section
6053 #define coff_bfd_relax_section		    bfd_generic_relax_section
6054 #endif
6055 
6056 #ifndef coff_bfd_gc_sections
6057 #define coff_bfd_gc_sections		    bfd_coff_gc_sections
6058 #endif
6059 
6060 #ifndef coff_bfd_lookup_section_flags
6061 #define coff_bfd_lookup_section_flags	    bfd_generic_lookup_section_flags
6062 #endif
6063 
6064 #ifndef coff_bfd_merge_sections
6065 #define coff_bfd_merge_sections		    bfd_generic_merge_sections
6066 #endif
6067 
6068 #ifndef coff_bfd_is_group_section
6069 #define coff_bfd_is_group_section	    bfd_generic_is_group_section
6070 #endif
6071 
6072 #ifndef coff_bfd_discard_group
6073 #define coff_bfd_discard_group		    bfd_generic_discard_group
6074 #endif
6075 
6076 #ifndef coff_section_already_linked
6077 #define coff_section_already_linked \
6078   _bfd_coff_section_already_linked
6079 #endif
6080 
6081 #ifndef coff_bfd_define_common_symbol
6082 #define coff_bfd_define_common_symbol	    bfd_generic_define_common_symbol
6083 #endif
6084 
6085 #ifndef coff_bfd_define_start_stop
6086 #define coff_bfd_define_start_stop	    bfd_generic_define_start_stop
6087 #endif
6088 
6089 #define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE)	\
6090 const bfd_target VAR =							\
6091 {									\
6092   NAME ,								\
6093   bfd_target_coff_flavour,						\
6094   BFD_ENDIAN_BIG,		/* Data byte order is big.  */		\
6095   BFD_ENDIAN_BIG,		/* Header byte order is big.  */	\
6096   /* object flags */							\
6097   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG |			\
6098    HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS),			\
6099   /* section flags */							\
6100   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
6101   UNDER,			/* Leading symbol underscore.  */	\
6102   '/',				/* AR_pad_char.  */			\
6103   15,				/* AR_max_namelen.  */			\
6104   0,				/* match priority.  */			\
6105 									\
6106   /* Data conversion functions.  */					\
6107   bfd_getb64, bfd_getb_signed_64, bfd_putb64,				\
6108   bfd_getb32, bfd_getb_signed_32, bfd_putb32,				\
6109   bfd_getb16, bfd_getb_signed_16, bfd_putb16,				\
6110 									\
6111   /* Header conversion functions.  */					\
6112   bfd_getb64, bfd_getb_signed_64, bfd_putb64,				\
6113   bfd_getb32, bfd_getb_signed_32, bfd_putb32,				\
6114   bfd_getb16, bfd_getb_signed_16, bfd_putb16,				\
6115 									\
6116 	/* bfd_check_format.  */					\
6117   { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p,		\
6118     _bfd_dummy_target },						\
6119 	/* bfd_set_format.  */						\
6120   { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false },	\
6121 	/* bfd_write_contents.  */					\
6122   { bfd_false, coff_write_object_contents, _bfd_write_archive_contents,	\
6123     bfd_false },							\
6124 									\
6125   BFD_JUMP_TABLE_GENERIC (coff),					\
6126   BFD_JUMP_TABLE_COPY (coff),						\
6127   BFD_JUMP_TABLE_CORE (_bfd_nocore),					\
6128   BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),				\
6129   BFD_JUMP_TABLE_SYMBOLS (coff),					\
6130   BFD_JUMP_TABLE_RELOCS (coff),						\
6131   BFD_JUMP_TABLE_WRITE (coff),						\
6132   BFD_JUMP_TABLE_LINK (coff),						\
6133   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),				\
6134 									\
6135   ALTERNATIVE,								\
6136 									\
6137   SWAP_TABLE								\
6138 };
6139 
6140 #define CREATE_BIGHDR_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE)	\
6141 const bfd_target VAR =							\
6142 {									\
6143   NAME ,								\
6144   bfd_target_coff_flavour,						\
6145   BFD_ENDIAN_LITTLE,		/* Data byte order is little.  */	\
6146   BFD_ENDIAN_BIG,		/* Header byte order is big.  */	\
6147   /* object flags */							\
6148   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG |			\
6149    HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS),			\
6150   /* section flags */							\
6151   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
6152   UNDER,			/* Leading symbol underscore.  */	\
6153   '/',				/* AR_pad_char.  */			\
6154   15,				/* AR_max_namelen.  */			\
6155   0,				/* match priority.  */			\
6156 									\
6157   /* Data conversion functions.  */					\
6158   bfd_getb64, bfd_getb_signed_64, bfd_putb64,				\
6159   bfd_getb32, bfd_getb_signed_32, bfd_putb32,				\
6160   bfd_getb16, bfd_getb_signed_16, bfd_putb16,				\
6161 									\
6162   /* Header conversion functions.  */					\
6163   bfd_getb64, bfd_getb_signed_64, bfd_putb64,				\
6164   bfd_getb32, bfd_getb_signed_32, bfd_putb32,				\
6165   bfd_getb16, bfd_getb_signed_16, bfd_putb16,				\
6166 									\
6167 	/* bfd_check_format.  */					\
6168   { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p,		\
6169     _bfd_dummy_target },						\
6170 	/* bfd_set_format.  */						\
6171   { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false },	\
6172 	/* bfd_write_contents.  */					\
6173   { bfd_false, coff_write_object_contents, _bfd_write_archive_contents,	\
6174     bfd_false },							\
6175 									\
6176   BFD_JUMP_TABLE_GENERIC (coff),					\
6177   BFD_JUMP_TABLE_COPY (coff),						\
6178   BFD_JUMP_TABLE_CORE (_bfd_nocore),					\
6179   BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),				\
6180   BFD_JUMP_TABLE_SYMBOLS (coff),					\
6181   BFD_JUMP_TABLE_RELOCS (coff),						\
6182   BFD_JUMP_TABLE_WRITE (coff),						\
6183   BFD_JUMP_TABLE_LINK (coff),						\
6184   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),				\
6185 									\
6186   ALTERNATIVE,								\
6187 									\
6188   SWAP_TABLE								\
6189 };
6190 
6191 #define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE)	\
6192 const bfd_target VAR =							\
6193 {									\
6194   NAME ,								\
6195   bfd_target_coff_flavour,						\
6196   BFD_ENDIAN_LITTLE,		/* Data byte order is little.  */	\
6197   BFD_ENDIAN_LITTLE,		/* Header byte order is little.  */	\
6198 	/* object flags */						\
6199   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG |			\
6200    HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS),			\
6201 	/* section flags */						\
6202   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\
6203   UNDER,			/* Leading symbol underscore.  */	\
6204   '/',				/* AR_pad_char.  */			\
6205   15,				/* AR_max_namelen.  */			\
6206   0,				/* match priority.  */			\
6207 									\
6208   /* Data conversion functions.  */					\
6209   bfd_getl64, bfd_getl_signed_64, bfd_putl64,				\
6210   bfd_getl32, bfd_getl_signed_32, bfd_putl32,				\
6211   bfd_getl16, bfd_getl_signed_16, bfd_putl16,				\
6212   /* Header conversion functions.  */					\
6213   bfd_getl64, bfd_getl_signed_64, bfd_putl64,				\
6214   bfd_getl32, bfd_getl_signed_32, bfd_putl32,				\
6215   bfd_getl16, bfd_getl_signed_16, bfd_putl16,				\
6216 	/* bfd_check_format.  */					\
6217   { _bfd_dummy_target, coff_object_p, bfd_generic_archive_p,		\
6218     _bfd_dummy_target },						\
6219        /* bfd_set_format.  */						\
6220   { bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false },	\
6221 	/* bfd_write_contents.  */					\
6222   { bfd_false, coff_write_object_contents, _bfd_write_archive_contents,	\
6223     bfd_false },							\
6224 									\
6225   BFD_JUMP_TABLE_GENERIC (coff),					\
6226   BFD_JUMP_TABLE_COPY (coff),						\
6227   BFD_JUMP_TABLE_CORE (_bfd_nocore),					\
6228   BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),				\
6229   BFD_JUMP_TABLE_SYMBOLS (coff),					\
6230   BFD_JUMP_TABLE_RELOCS (coff),						\
6231   BFD_JUMP_TABLE_WRITE (coff),						\
6232   BFD_JUMP_TABLE_LINK (coff),						\
6233   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),				\
6234 									\
6235   ALTERNATIVE,								\
6236 									\
6237   SWAP_TABLE								\
6238 };
6239