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1 /* coff object file format
2 Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005
4 Free Software Foundation, Inc.
5
6 This file is part of GAS.
7
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
21 02110-1301, USA. */
22
23 #ifndef OBJ_FORMAT_H
24 #define OBJ_FORMAT_H
25
26 #define OBJ_COFF 1
27
28 #ifndef BFD_ASSEMBLER
29
30 #define WORKING_DOT_WORD
31 #define WARN_SIGNED_OVERFLOW_WORD
32 #define OBJ_COFF_OMIT_OPTIONAL_HEADER
33 #define BFD_HEADERS
34 #define BFD
35
36 #endif
37
38 #include "targ-cpu.h"
39
40 #include "bfd.h"
41
42 /* This internal_lineno crap is to stop namespace pollution from the
43 bfd internal coff headerfile. */
44 #define internal_lineno bfd_internal_lineno
45 #include "coff/internal.h"
46 #undef internal_lineno
47
48 /* CPU-specific setup: */
49
50 #ifdef TC_ARM
51 #include "coff/arm.h"
52 #ifndef TARGET_FORMAT
53 #define TARGET_FORMAT "coff-arm"
54 #endif
55 #endif
56
57 #ifdef TC_PPC
58 #ifdef TE_PE
59 #include "coff/powerpc.h"
60 #else
61 #include "coff/rs6000.h"
62 #endif
63 #endif
64
65 #ifdef TC_SPARC
66 #include "coff/sparc.h"
67 #endif
68
69 #ifdef TC_I386
70 #include "coff/i386.h"
71
72 #ifdef TE_PE
73 #define TARGET_FORMAT "pe-i386"
74 #endif
75
76 #ifndef TARGET_FORMAT
77 #define TARGET_FORMAT "coff-i386"
78 #endif
79 #endif
80
81 #ifdef TC_M68K
82 #include "coff/m68k.h"
83 #ifndef TARGET_FORMAT
84 #define TARGET_FORMAT "coff-m68k"
85 #endif
86 #endif
87
88 #ifdef TC_A29K
89 #include "coff/a29k.h"
90 #define TARGET_FORMAT "coff-a29k-big"
91 #endif
92
93 #ifdef TC_OR32
94 #include "coff/or32.h"
95 #define TARGET_FORMAT "coff-or32-big"
96 #endif
97
98 #ifdef TC_I960
99 #include "coff/i960.h"
100 #define TARGET_FORMAT "coff-Intel-little"
101 #endif
102
103 #ifdef TC_Z8K
104 #include "coff/z8k.h"
105 #define TARGET_FORMAT "coff-z8k"
106 #endif
107
108 #ifdef TC_H8300
109 #include "coff/h8300.h"
110 #define TARGET_FORMAT "coff-h8300"
111 #endif
112
113 #ifdef TC_H8500
114 #include "coff/h8500.h"
115 #define TARGET_FORMAT "coff-h8500"
116 #endif
117
118 #ifdef TC_MAXQ20
119 #include "coff/maxq.h"
120 #define TARGET_FORMAT "coff-maxq"
121 #endif
122
123 #ifdef TC_SH
124
125 #ifdef TE_PE
126 #define COFF_WITH_PE
127 #endif
128
129 #include "coff/sh.h"
130
131 #ifdef TE_PE
132 #define TARGET_FORMAT "pe-shl"
133 #else
134
135 #define TARGET_FORMAT \
136 (!target_big_endian \
137 ? (sh_small ? "coff-shl-small" : "coff-shl") \
138 : (sh_small ? "coff-sh-small" : "coff-sh"))
139
140 #endif
141 #endif
142
143 #ifdef TC_MIPS
144 #define COFF_WITH_PE
145 #include "coff/mipspe.h"
146 #undef TARGET_FORMAT
147 #define TARGET_FORMAT "pe-mips"
148 #endif
149
150 #ifdef TC_M88K
151 #include "coff/m88k.h"
152 #define TARGET_FORMAT "coff-m88kbcs"
153 #endif
154
155 #ifdef TC_W65
156 #include "coff/w65.h"
157 #define TARGET_FORMAT "coff-w65"
158 #endif
159
160 #ifdef TC_TIC30
161 #include "coff/tic30.h"
162 #define TARGET_FORMAT "coff-tic30"
163 #endif
164
165 #ifdef TC_TIC4X
166 #include "coff/tic4x.h"
167 #define TARGET_FORMAT "coff2-tic4x"
168 #endif
169
170 #ifdef TC_TIC54X
171 #include "coff/tic54x.h"
172 #define TARGET_FORMAT "coff1-c54x"
173 #endif
174
175 #ifdef TC_TIC80
176 #include "coff/tic80.h"
177 #define TARGET_FORMAT "coff-tic80"
178 #define ALIGNMENT_IN_S_FLAGS 1
179 #endif
180
181 #ifdef TC_MCORE
182 #include "coff/mcore.h"
183 #ifndef TARGET_FORMAT
184 #define TARGET_FORMAT "pe-mcore"
185 #endif
186 #endif
187
188 #ifdef TE_PE
189 /* PE weak symbols need USE_UNIQUE. */
190 #define USE_UNIQUE 1
191 #endif
192
193 /* Targets may also set this. Also, if BFD_ASSEMBLER is defined, this
194 will already have been defined. */
195 #undef SYMBOLS_NEED_BACKPOINTERS
196 #define SYMBOLS_NEED_BACKPOINTERS 1
197
198 #ifndef OBJ_COFF_MAX_AUXENTRIES
199 #define OBJ_COFF_MAX_AUXENTRIES 1
200 #endif
201
202 #define obj_symbol_new_hook coff_obj_symbol_new_hook
203 #define obj_read_begin_hook coff_obj_read_begin_hook
204
205 /* This file really contains two implementations of the COFF back end.
206 They are in the process of being merged, but this is only a
207 preliminary, mechanical merging. Many definitions that are
208 identical between the two are still found in both versions.
209
210 The first version, with BFD_ASSEMBLER defined, uses high-level BFD
211 interfaces and data structures. The second version, with
212 BFD_ASSEMBLER not defined, also uses BFD, but mostly for swapping
213 data structures and for doing the actual I/O. The latter defines
214 the preprocessor symbols BFD and BFD_HEADERS. Try not to let this
215 confuse you.
216
217 These two are in the process of being merged, and eventually the
218 BFD_ASSEMBLER version should take over completely. Release timing
219 issues and namespace problems convinced me to merge the two
220 together in this fashion, a little sooner than I would have liked.
221 The real merge should be much better done by the time the next
222 release comes out.
223
224 For now, the structure of this file is:
225 <common>
226 #ifdef BFD_ASSEMBLER
227 <one version>
228 #else
229 <other version>
230 #endif
231 <common>
232 Unfortunately, the common portions are very small at the moment,
233 and many declarations or definitions are duplicated. The structure
234 of obj-coff.c is similar.
235
236 See doc/internals.texi for a brief discussion of the history, if
237 you care.
238
239 Ken Raeburn, 5 May 1994. */
240
241 #ifdef BFD_ASSEMBLER
242
243 #include "bfd/libcoff.h"
244
245 #define OUTPUT_FLAVOR bfd_target_coff_flavour
246
247 /* Alter the field names, for now, until we've fixed up the other
248 references to use the new name. */
249 #ifdef TC_I960
250 #define TC_SYMFIELD_TYPE symbolS *
251 #define sy_tc bal
252 #endif
253
254 #define OBJ_SYMFIELD_TYPE unsigned long
255 #define sy_obj sy_flags
256
257 /* We can't use the predefined section symbols in bfd/section.c, as
258 COFF symbols have extra fields. See bfd/libcoff.h:coff_symbol_type. */
259 #ifndef obj_sec_sym_ok_for_reloc
260 #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0)
261 #endif
262
263 #define SYM_AUXENT(S) \
264 (&coffsymbol (symbol_get_bfdsym (S))->native[1].u.auxent)
265 #define SYM_AUXINFO(S) \
266 (&coffsymbol (symbol_get_bfdsym (S))->native[1])
267
268 /* The number of auxiliary entries. */
269 #define S_GET_NUMBER_AUXILIARY(s) \
270 (coffsymbol (symbol_get_bfdsym (s))->native->u.syment.n_numaux)
271 /* The number of auxiliary entries. */
272 #define S_SET_NUMBER_AUXILIARY(s, v) (S_GET_NUMBER_AUXILIARY (s) = (v))
273
274 /* True if a symbol name is in the string table, i.e. its length is > 8. */
275 #define S_IS_STRING(s) (strlen (S_GET_NAME (s)) > 8 ? 1 : 0)
276
277 /* Auxiliary entry macros. SA_ stands for symbol auxiliary. */
278 /* Omit the tv related fields. */
279 /* Accessors. */
280
281 #define SA_GET_SYM_TAGNDX(s) (SYM_AUXENT (s)->x_sym.x_tagndx.l)
282 #define SA_GET_SYM_LNNO(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno)
283 #define SA_GET_SYM_SIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size)
284 #define SA_GET_SYM_FSIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize)
285 #define SA_GET_SYM_LNNOPTR(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr)
286 #define SA_GET_SYM_ENDNDX(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx)
287 #define SA_GET_SYM_DIMEN(s,i) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)])
288 #define SA_GET_FILE_FNAME(s) (SYM_AUXENT (s)->x_file.x_fname)
289 #define SA_GET_SCN_SCNLEN(s) (SYM_AUXENT (s)->x_scn.x_scnlen)
290 #define SA_GET_SCN_NRELOC(s) (SYM_AUXENT (s)->x_scn.x_nreloc)
291 #define SA_GET_SCN_NLINNO(s) (SYM_AUXENT (s)->x_scn.x_nlinno)
292
293 #define SA_SET_SYM_LNNO(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno = (v))
294 #define SA_SET_SYM_SIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size = (v))
295 #define SA_SET_SYM_FSIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize = (v))
296 #define SA_SET_SYM_LNNOPTR(s,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr = (v))
297 #define SA_SET_SYM_DIMEN(s,i,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)] = (v))
298 #define SA_SET_FILE_FNAME(s,v) strncpy (SYM_AUXENT (s)->x_file.x_fname, (v), FILNMLEN)
299 #define SA_SET_SCN_SCNLEN(s,v) (SYM_AUXENT (s)->x_scn.x_scnlen = (v))
300 #define SA_SET_SCN_NRELOC(s,v) (SYM_AUXENT (s)->x_scn.x_nreloc = (v))
301 #define SA_SET_SCN_NLINNO(s,v) (SYM_AUXENT (s)->x_scn.x_nlinno = (v))
302
303 /* Internal use only definitions. SF_ stands for symbol flags.
304
305 These values can be assigned to sy_symbol.ost_flags field of a symbolS.
306
307 You'll break i960 if you shift the SYSPROC bits anywhere else. for
308 more on the balname/callname hack, see tc-i960.h. b.out is done
309 differently. */
310
311 #define SF_I960_MASK 0x000001ff /* Bits 0-8 are used by the i960 port. */
312 #define SF_SYSPROC 0x0000003f /* bits 0-5 are used to store the sysproc number. */
313 #define SF_IS_SYSPROC 0x00000040 /* bit 6 marks symbols that are sysprocs. */
314 #define SF_BALNAME 0x00000080 /* bit 7 marks BALNAME symbols. */
315 #define SF_CALLNAME 0x00000100 /* bit 8 marks CALLNAME symbols. */
316
317 #define SF_NORMAL_MASK 0x0000ffff /* bits 12-15 are general purpose. */
318
319 #define SF_STATICS 0x00001000 /* Mark the .text & all symbols. */
320 #define SF_DEFINED 0x00002000 /* Symbol is defined in this file. */
321 #define SF_STRING 0x00004000 /* Symbol name length > 8. */
322 #define SF_LOCAL 0x00008000 /* Symbol must not be emitted. */
323
324 #define SF_DEBUG_MASK 0xffff0000 /* bits 16-31 are debug info. */
325
326 #define SF_FUNCTION 0x00010000 /* The symbol is a function. */
327 #define SF_PROCESS 0x00020000 /* Process symbol before write. */
328 #define SF_TAGGED 0x00040000 /* Is associated with a tag. */
329 #define SF_TAG 0x00080000 /* Is a tag. */
330 #define SF_DEBUG 0x00100000 /* Is in debug or abs section. */
331 #define SF_GET_SEGMENT 0x00200000 /* Get the section of the forward symbol. */
332 /* All other bits are unused. */
333
334 /* Accessors. */
335 #define SF_GET(s) (* symbol_get_obj (s))
336 #define SF_GET_DEBUG(s) (symbol_get_bfdsym (s)->flags & BSF_DEBUGGING)
337 #define SF_SET_DEBUG(s) (symbol_get_bfdsym (s)->flags |= BSF_DEBUGGING)
338 #define SF_GET_NORMAL_FIELD(s) (SF_GET (s) & SF_NORMAL_MASK)
339 #define SF_GET_DEBUG_FIELD(s) (SF_GET (s) & SF_DEBUG_MASK)
340 #define SF_GET_FILE(s) (SF_GET (s) & SF_FILE)
341 #define SF_GET_STATICS(s) (SF_GET (s) & SF_STATICS)
342 #define SF_GET_DEFINED(s) (SF_GET (s) & SF_DEFINED)
343 #define SF_GET_STRING(s) (SF_GET (s) & SF_STRING)
344 #define SF_GET_LOCAL(s) (SF_GET (s) & SF_LOCAL)
345 #define SF_GET_FUNCTION(s) (SF_GET (s) & SF_FUNCTION)
346 #define SF_GET_PROCESS(s) (SF_GET (s) & SF_PROCESS)
347 #define SF_GET_TAGGED(s) (SF_GET (s) & SF_TAGGED)
348 #define SF_GET_TAG(s) (SF_GET (s) & SF_TAG)
349 #define SF_GET_GET_SEGMENT(s) (SF_GET (s) & SF_GET_SEGMENT)
350 #define SF_GET_I960(s) (SF_GET (s) & SF_I960_MASK) /* Used by i960. */
351 #define SF_GET_BALNAME(s) (SF_GET (s) & SF_BALNAME) /* Used by i960. */
352 #define SF_GET_CALLNAME(s) (SF_GET (s) & SF_CALLNAME) /* Used by i960. */
353 #define SF_GET_IS_SYSPROC(s) (SF_GET (s) & SF_IS_SYSPROC) /* Used by i960. */
354 #define SF_GET_SYSPROC(s) (SF_GET (s) & SF_SYSPROC) /* Used by i960. */
355
356 /* Modifiers. */
357 #define SF_SET(s,v) (SF_GET (s) = (v))
358 #define SF_SET_NORMAL_FIELD(s,v)(SF_GET (s) |= ((v) & SF_NORMAL_MASK))
359 #define SF_SET_DEBUG_FIELD(s,v) (SF_GET (s) |= ((v) & SF_DEBUG_MASK))
360 #define SF_SET_FILE(s) (SF_GET (s) |= SF_FILE)
361 #define SF_SET_STATICS(s) (SF_GET (s) |= SF_STATICS)
362 #define SF_SET_DEFINED(s) (SF_GET (s) |= SF_DEFINED)
363 #define SF_SET_STRING(s) (SF_GET (s) |= SF_STRING)
364 #define SF_SET_LOCAL(s) (SF_GET (s) |= SF_LOCAL)
365 #define SF_CLEAR_LOCAL(s) (SF_GET (s) &= ~SF_LOCAL)
366 #define SF_SET_FUNCTION(s) (SF_GET (s) |= SF_FUNCTION)
367 #define SF_SET_PROCESS(s) (SF_GET (s) |= SF_PROCESS)
368 #define SF_SET_TAGGED(s) (SF_GET (s) |= SF_TAGGED)
369 #define SF_SET_TAG(s) (SF_GET (s) |= SF_TAG)
370 #define SF_SET_GET_SEGMENT(s) (SF_GET (s) |= SF_GET_SEGMENT)
371 #define SF_SET_I960(s,v) (SF_GET (s) |= ((v) & SF_I960_MASK)) /* Used by i960. */
372 #define SF_SET_BALNAME(s) (SF_GET (s) |= SF_BALNAME) /* Used by i960. */
373 #define SF_SET_CALLNAME(s) (SF_GET (s) |= SF_CALLNAME) /* Used by i960. */
374 #define SF_SET_IS_SYSPROC(s) (SF_GET (s) |= SF_IS_SYSPROC) /* Used by i960. */
375 #define SF_SET_SYSPROC(s,v) (SF_GET (s) |= ((v) & SF_SYSPROC)) /* Used by i960. */
376
377
378 /* Line number handling. */
379 extern int text_lineno_number;
380 extern int coff_line_base;
381 extern int coff_n_line_nos;
382 extern symbolS *coff_last_function;
383
384 #define obj_emit_lineno(WHERE, LINE, FILE_START) abort ()
385 #define obj_app_file(name, app) c_dot_file_symbol (name, app)
386 #define obj_frob_symbol(S,P) coff_frob_symbol (S, & P)
387 #define obj_frob_section(S) coff_frob_section (S)
388 #define obj_frob_file_after_relocs() coff_frob_file_after_relocs ()
389 #ifndef obj_adjust_symtab
390 #define obj_adjust_symtab() coff_adjust_symtab ()
391 #endif
392
393 /* Forward the segment of a forwarded symbol, handle assignments that
394 just copy symbol values, etc. */
395 #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
396 #ifndef TE_I386AIX
397 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \
398 (SF_GET_GET_SEGMENT (dest) \
399 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \
400 : 0)
401 #else
402 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \
403 (SF_GET_GET_SEGMENT (dest) && S_GET_SEGMENT (dest) == SEG_UNKNOWN \
404 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \
405 : 0)
406 #endif
407 #endif
408
409 /* Sanity check. */
410
411 #ifdef TC_I960
412 #ifndef C_LEAFSTAT
413 hey ! Where is the C_LEAFSTAT definition ? i960 - coff support is depending on it.
414 #endif /* no C_LEAFSTAT */
415 #endif /* TC_I960 */
416
417 #else /* not BFD_ASSEMBLER */
418
419 #if defined TC_A29K || defined TC_OR32
420 /* Allow translate from aout relocs to coff relocs. */
421 #define NO_RELOC 20
422 #define RELOC_32 1
423 #define RELOC_8 2
424 #define RELOC_CONST 3
425 #define RELOC_CONSTH 4
426 #define RELOC_JUMPTARG 5
427 #define RELOC_BASE22 6
428 #define RELOC_HI22 7
429 #define RELOC_LO10 8
430 #define RELOC_BASE13 9
431 #define RELOC_WDISP22 10
432 #define RELOC_WDISP30 11
433 #endif
434
435 extern const segT N_TYPE_seg[];
436
437 /* Magic number of paged executable. */
438 #define DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE 0x8300
439
440 /* SYMBOL TABLE */
441
442 /* Symbol table entry data type. */
443
444 typedef struct
445 {
446 /* Basic symbol. */
447 struct internal_syment ost_entry;
448 /* Auxiliary entry. */
449 union internal_auxent ost_auxent[OBJ_COFF_MAX_AUXENTRIES];
450 /* obj_coff internal use only flags. */
451 unsigned int ost_flags;
452 } obj_symbol_type;
453
454 /* Symbol table macros and constants. */
455
456 /* Possible and useful section number in symbol table
457 The values of TEXT, DATA and BSS may not be portable. */
458
459 #define C_ABS_SECTION N_ABS
460 #define C_UNDEF_SECTION N_UNDEF
461 #define C_DEBUG_SECTION N_DEBUG
462 #define C_NTV_SECTION N_TV
463 #define C_PTV_SECTION P_TV
464 #define C_REGISTER_SECTION 50
465
466 /* Macros to extract information from a symbol table entry.
467 This syntactic indirection allows independence regarding a.out or coff.
468 The argument (s) of all these macros is a pointer to a symbol table entry. */
469
470 /* Predicates. */
471 /* True if the symbol is external. */
472 #define S_IS_EXTERNAL(s) \
473 ((s)->sy_symbol.ost_entry.n_scnum == C_UNDEF_SECTION)
474
475 /* True if symbol has been defined, ie :
476 section > 0 (DATA, TEXT or BSS)
477 section == 0 and value > 0 (external bss symbol). */
478 #define S_IS_DEFINED(s) \
479 ((s)->sy_symbol.ost_entry.n_scnum > C_UNDEF_SECTION \
480 || ((s)->sy_symbol.ost_entry.n_scnum == C_UNDEF_SECTION \
481 && S_GET_VALUE (s) > 0) \
482 || ((s)->sy_symbol.ost_entry.n_scnum == C_ABS_SECTION))
483
484 /* Return true for symbols that should not be reduced to section
485 symbols or eliminated from expressions, because they may be
486 overridden by the linker. */
487 #define S_FORCE_RELOC(s, strict) \
488 (!SEG_NORMAL (S_GET_SEGMENT (s)) || (strict && S_IS_WEAK (s)))
489
490 /* True if a debug special symbol entry. */
491 #define S_IS_DEBUG(s) \
492 ((s)->sy_symbol.ost_entry.n_scnum == C_DEBUG_SECTION)
493
494 /* True if a symbol is local symbol name. */
495 /* A symbol name whose name includes ^A is a gas internal pseudo symbol. */
496 #define S_IS_LOCAL(s) \
497 ((s)->sy_symbol.ost_entry.n_scnum == C_REGISTER_SECTION \
498 || (S_LOCAL_NAME(s) && ! flag_keep_locals && ! S_IS_DEBUG (s)) \
499 || strchr (S_GET_NAME (s), '\001') != NULL \
500 || strchr (S_GET_NAME (s), '\002') != NULL \
501 || (flag_strip_local_absolute \
502 && !S_IS_EXTERNAL (s) \
503 && (s)->sy_symbol.ost_entry.n_scnum == C_ABS_SECTION))
504
505 /* True if a symbol can be multiply defined (bss symbols have this def
506 though it is bad practice). */
507 #define S_IS_COMMON(s) ((s)->sy_symbol.ost_entry.n_scnum == 0 \
508 && S_GET_VALUE (s) != 0)
509
510 /* True if a symbol name is in the string table, i.e. its length is > 8. */
511 #define S_IS_STRING(s) (strlen (S_GET_NAME (s)) > 8 ? 1 : 0)
512
513 /* True if a symbol is defined as weak. */
514 #ifdef TE_PE
515 #define S_IS_WEAK(s) \
516 ( (s)->sy_symbol.ost_entry.n_sclass == C_NT_WEAK \
517 || (s)->sy_symbol.ost_entry.n_sclass == C_WEAKEXT)
518 #else
519 #define S_IS_WEAK(s) \
520 ((s)->sy_symbol.ost_entry.n_sclass == C_WEAKEXT)
521 #endif
522
523 /* Accessors. */
524 /* The name of the symbol. */
525 #define S_GET_NAME(s) ((char *) (s)->sy_symbol.ost_entry.n_offset)
526
527 /* The pointer to the string table. */
528 #define S_GET_OFFSET(s) ((s)->sy_symbol.ost_entry.n_offset)
529
530 /* The numeric value of the segment. */
531 #define S_GET_SEGMENT(s) s_get_segment (s)
532
533 /* The data type. */
534 #define S_GET_DATA_TYPE(s) ((s)->sy_symbol.ost_entry.n_type)
535
536 /* The storage class. */
537 #define S_GET_STORAGE_CLASS(s) ((s)->sy_symbol.ost_entry.n_sclass)
538
539 /* The number of auxiliary entries. */
540 #define S_GET_NUMBER_AUXILIARY(s) ((s)->sy_symbol.ost_entry.n_numaux)
541
542 /* Modifiers. */
543 /* Set the name of the symbol. */
544 #define S_SET_NAME(s, v) \
545 ((s)->sy_symbol.ost_entry.n_offset = (unsigned long) (v))
546
547 /* Set the offset of the symbol. */
548 #define S_SET_OFFSET(s, v) \
549 ((s)->sy_symbol.ost_entry.n_offset = (v))
550
551 /* The numeric value of the segment. */
552 #define S_SET_SEGMENT(s, v) \
553 ((s)->sy_symbol.ost_entry.n_scnum = SEGMENT_TO_SYMBOL_TYPE (v))
554
555 /* The data type. */
556 #define S_SET_DATA_TYPE(s, v) \
557 ((s)->sy_symbol.ost_entry.n_type = (v))
558
559 /* The storage class. */
560 #define S_SET_STORAGE_CLASS(s, v) \
561 ((s)->sy_symbol.ost_entry.n_sclass = (v))
562
563 /* The number of auxiliary entries. */
564 #define S_SET_NUMBER_AUXILIARY(s, v) \
565 ((s)->sy_symbol.ost_entry.n_numaux = (v))
566
567 /* Additional modifiers. */
568 /* The symbol is external (does not mean undefined). */
569 #define S_SET_EXTERNAL(s) \
570 do \
571 { \
572 S_SET_STORAGE_CLASS (s, C_EXT); \
573 SF_CLEAR_LOCAL (s); \
574 } \
575 while (0)
576
577 /* Auxiliary entry macros. SA_ stands for symbol auxiliary. */
578 /* Omit the tv related fields. */
579 /* Accessors. */
580 #define SYM_AUXENT(S) (&(S)->sy_symbol.ost_auxent[0])
581
582 #define SA_GET_SYM_TAGNDX(s) (SYM_AUXENT (s)->x_sym.x_tagndx.l)
583 #define SA_GET_SYM_LNNO(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno)
584 #define SA_GET_SYM_SIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size)
585 #define SA_GET_SYM_FSIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize)
586 #define SA_GET_SYM_LNNOPTR(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr)
587 #define SA_GET_SYM_ENDNDX(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx.l)
588 #define SA_GET_SYM_DIMEN(s,i) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)])
589 #define SA_GET_FILE_FNAME(s) (SYM_AUXENT (s)->x_file.x_fname)
590 #define SA_GET_FILE_FNAME_OFFSET(s) (SYM_AUXENT (s)->x_file.x_n.x_offset)
591 #define SA_GET_FILE_FNAME_ZEROS(s) (SYM_AUXENT (s)->x_file.x_n.x_zeroes)
592 #define SA_GET_SCN_SCNLEN(s) (SYM_AUXENT (s)->x_scn.x_scnlen)
593 #define SA_GET_SCN_NRELOC(s) (SYM_AUXENT (s)->x_scn.x_nreloc)
594 #define SA_GET_SCN_NLINNO(s) (SYM_AUXENT (s)->x_scn.x_nlinno)
595
596 /* Modifiers. */
597 #define SA_SET_SYM_TAGNDX(s,v) (SYM_AUXENT (s)->x_sym.x_tagndx.l = (v))
598 #define SA_SET_SYM_LNNO(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno = (v))
599 #define SA_SET_SYM_SIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size = (v))
600 #define SA_SET_SYM_FSIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize = (v))
601 #define SA_SET_SYM_LNNOPTR(s,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr = (v))
602 #define SA_SET_SYM_ENDNDX(s,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx.l = (v))
603 #define SA_SET_SYM_DIMEN(s,i,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)] = (v))
604 #define SA_SET_FILE_FNAME(s,v) strncpy (SYM_AUXENT (s)->x_file.x_fname,(v),FILNMLEN)
605 #define SA_SET_FILE_FNAME_OFFSET(s,v) (SYM_AUXENT (s)->x_file.x_n.x_offset = (v))
606 #define SA_SET_FILE_FNAME_ZEROS(s,v) (SYM_AUXENT (s)->x_file.x_n.x_zeroes = (v))
607 #define SA_SET_SCN_SCNLEN(s,v) (SYM_AUXENT (s)->x_scn.x_scnlen = (v))
608 #define SA_SET_SCN_NRELOC(s,v) (SYM_AUXENT (s)->x_scn.x_nreloc = (v))
609 #define SA_SET_SCN_NLINNO(s,v) (SYM_AUXENT (s)->x_scn.x_nlinno = (v))
610
611 /* Internal use only definitions. SF_ stands for symbol flags.
612
613 These values can be assigned to sy_symbol.ost_flags field of a symbolS.
614
615 You'll break i960 if you shift the SYSPROC bits anywhere else. for
616 more on the balname/callname hack, see tc-i960.h. b.out is done
617 differently. */
618
619 #define SF_I960_MASK 0x000001ff /* Bits 0-8 are used by the i960 port. */
620 #define SF_SYSPROC 0x0000003f /* bits 0-5 are used to store the sysproc number. */
621 #define SF_IS_SYSPROC 0x00000040 /* bit 6 marks symbols that are sysprocs. */
622 #define SF_BALNAME 0x00000080 /* bit 7 marks BALNAME symbols. */
623 #define SF_CALLNAME 0x00000100 /* bit 8 marks CALLNAME symbols. */
624
625 #define SF_NORMAL_MASK 0x0000ffff /* bits 12-15 are general purpose. */
626
627 #define SF_STATICS 0x00001000 /* Mark the .text & all symbols. */
628 #define SF_DEFINED 0x00002000 /* Symbol is defined in this file. */
629 #define SF_STRING 0x00004000 /* Symbol name length > 8. */
630 #define SF_LOCAL 0x00008000 /* Symbol must not be emitted. */
631
632 #define SF_DEBUG_MASK 0xffff0000 /* bits 16-31 are debug info. */
633
634 #define SF_FUNCTION 0x00010000 /* The symbol is a function. */
635 #define SF_PROCESS 0x00020000 /* Process symbol before write. */
636 #define SF_TAGGED 0x00040000 /* Is associated with a tag. */
637 #define SF_TAG 0x00080000 /* Is a tag. */
638 #define SF_DEBUG 0x00100000 /* Is in debug or abs section. */
639 #define SF_GET_SEGMENT 0x00200000 /* Get the section of the forward symbol. */
640 #define SF_ADJ_LNNOPTR 0x00400000 /* Has a lnnoptr. */
641 /* All other bits are unused. */
642
643 /* Accessors. */
644 #define SF_GET(s) ((s)->sy_symbol.ost_flags)
645 #define SF_GET_NORMAL_FIELD(s) (SF_GET (s) & SF_NORMAL_MASK)
646 #define SF_GET_DEBUG_FIELD(s) (SF_GET (s) & SF_DEBUG_MASK)
647 #define SF_GET_FILE(s) (SF_GET (s) & SF_FILE)
648 #define SF_GET_STATICS(s) (SF_GET (s) & SF_STATICS)
649 #define SF_GET_DEFINED(s) (SF_GET (s) & SF_DEFINED)
650 #define SF_GET_STRING(s) (SF_GET (s) & SF_STRING)
651 #define SF_GET_LOCAL(s) (SF_GET (s) & SF_LOCAL)
652 #define SF_GET_FUNCTION(s) (SF_GET (s) & SF_FUNCTION)
653 #define SF_GET_PROCESS(s) (SF_GET (s) & SF_PROCESS)
654 #define SF_GET_DEBUG(s) (SF_GET (s) & SF_DEBUG)
655 #define SF_GET_TAGGED(s) (SF_GET (s) & SF_TAGGED)
656 #define SF_GET_TAG(s) (SF_GET (s) & SF_TAG)
657 #define SF_GET_GET_SEGMENT(s) (SF_GET (s) & SF_GET_SEGMENT)
658 #define SF_GET_ADJ_LNNOPTR(s) (SF_GET (s) & SF_ADJ_LNNOPTR)
659 #define SF_GET_I960(s) (SF_GET (s) & SF_I960_MASK) /* Used by i960. */
660 #define SF_GET_BALNAME(s) (SF_GET (s) & SF_BALNAME) /* Used by i960. */
661 #define SF_GET_CALLNAME(s) (SF_GET (s) & SF_CALLNAME) /* Used by i960. */
662 #define SF_GET_IS_SYSPROC(s) (SF_GET (s) & SF_IS_SYSPROC) /* Used by i960. */
663 #define SF_GET_SYSPROC(s) (SF_GET (s) & SF_SYSPROC) /* Used by i960. */
664
665 /* Modifiers. */
666 #define SF_SET(s,v) (SF_GET (s) = (v))
667 #define SF_SET_NORMAL_FIELD(s,v)(SF_GET (s) |= ((v) & SF_NORMAL_MASK))
668 #define SF_SET_DEBUG_FIELD(s,v) (SF_GET (s) |= ((v) & SF_DEBUG_MASK))
669 #define SF_SET_FILE(s) (SF_GET (s) |= SF_FILE)
670 #define SF_SET_STATICS(s) (SF_GET (s) |= SF_STATICS)
671 #define SF_SET_DEFINED(s) (SF_GET (s) |= SF_DEFINED)
672 #define SF_SET_STRING(s) (SF_GET (s) |= SF_STRING)
673 #define SF_SET_LOCAL(s) (SF_GET (s) |= SF_LOCAL)
674 #define SF_CLEAR_LOCAL(s) (SF_GET (s) &= ~SF_LOCAL)
675 #define SF_SET_FUNCTION(s) (SF_GET (s) |= SF_FUNCTION)
676 #define SF_SET_PROCESS(s) (SF_GET (s) |= SF_PROCESS)
677 #define SF_SET_DEBUG(s) (SF_GET (s) |= SF_DEBUG)
678 #define SF_SET_TAGGED(s) (SF_GET (s) |= SF_TAGGED)
679 #define SF_SET_TAG(s) (SF_GET (s) |= SF_TAG)
680 #define SF_SET_GET_SEGMENT(s) (SF_GET (s) |= SF_GET_SEGMENT)
681 #define SF_SET_ADJ_LNNOPTR(s) (SF_GET (s) |= SF_ADJ_LNNOPTR)
682 #define SF_SET_I960(s,v) (SF_GET (s) |= ((v) & SF_I960_MASK)) /* Used by i960. */
683 #define SF_SET_BALNAME(s) (SF_GET (s) |= SF_BALNAME) /* Used by i960. */
684 #define SF_SET_CALLNAME(s) (SF_GET (s) |= SF_CALLNAME) /* Used by i960. */
685 #define SF_SET_IS_SYSPROC(s) (SF_GET (s) |= SF_IS_SYSPROC) /* Used by i960. */
686 #define SF_SET_SYSPROC(s,v) (SF_GET (s) |= ((v) & SF_SYSPROC)) /* Used by i960. */
687
688 /* File header macro and type definition. */
689
690 /* File position calculators. Beware to use them when all the
691 appropriate fields are set in the header. */
692
693 #ifdef OBJ_COFF_OMIT_OPTIONAL_HEADER
694 #define OBJ_COFF_AOUTHDRSZ (0)
695 #else
696 #define OBJ_COFF_AOUTHDRSZ (AOUTHDRSZ)
697 #endif
698
699 #define H_GET_TEXT_FILE_OFFSET(h) \
700 (long) (FILHSZ \
701 + OBJ_COFF_AOUTHDRSZ \
702 + H_GET_NUMBER_OF_SECTIONS (h) * SCNHSZ)
703
704 #define H_GET_DATA_FILE_OFFSET(h) \
705 (long) (H_GET_TEXT_FILE_OFFSET (h) \
706 + H_GET_TEXT_SIZE (h))
707
708 #define H_GET_BSS_FILE_OFFSET(h) 0
709
710 #define H_GET_RELOCATION_FILE_OFFSET(h) \
711 (long) (H_GET_DATA_FILE_OFFSET (h) \
712 + H_GET_DATA_SIZE (h))
713
714 #define H_GET_LINENO_FILE_OFFSET(h) \
715 (long) (H_GET_RELOCATION_FILE_OFFSET (h) \
716 + H_GET_RELOCATION_SIZE (h))
717
718 #define H_GET_SYMBOL_TABLE_FILE_OFFSET(h) \
719 (long) (H_GET_LINENO_FILE_OFFSET (h) \
720 + H_GET_LINENO_SIZE (h))
721
722 #define H_GET_FILE_SIZE(h) \
723 (long) (H_GET_SYMBOL_TABLE_FILE_OFFSET (h) \
724 + H_GET_SYMBOL_TABLE_SIZE (h) \
725 + (h)->string_table_size)
726
727 /* Accessors. */
728 /* aouthdr. */
729 #define H_GET_MAGIC_NUMBER(h) ((h)->aouthdr.magic)
730 #define H_GET_VERSION_STAMP(h) ((h)->aouthdr.vstamp)
731 #define H_GET_TEXT_SIZE(h) ((h)->aouthdr.tsize)
732 #define H_GET_DATA_SIZE(h) ((h)->aouthdr.dsize)
733 #define H_GET_BSS_SIZE(h) ((h)->aouthdr.bsize)
734 #define H_GET_ENTRY_POINT(h) ((h)->aouthdr.entry)
735 #define H_GET_TEXT_START(h) ((h)->aouthdr.text_start)
736 #define H_GET_DATA_START(h) ((h)->aouthdr.data_start)
737 /* filehdr. */
738 #define H_GET_FILE_MAGIC_NUMBER(h) ((h)->filehdr.f_magic)
739 #define H_GET_NUMBER_OF_SECTIONS(h) ((h)->filehdr.f_nscns)
740 #define H_GET_TIME_STAMP(h) ((h)->filehdr.f_timdat)
741 #define H_GET_SYMBOL_TABLE_POINTER(h) ((h)->filehdr.f_symptr)
742 #define H_GET_SYMBOL_COUNT(h) ((h)->filehdr.f_nsyms)
743 #define H_GET_SYMBOL_TABLE_SIZE(h) (H_GET_SYMBOL_COUNT(h) * SYMESZ)
744 #define H_GET_SIZEOF_OPTIONAL_HEADER(h) ((h)->filehdr.f_opthdr)
745 #define H_GET_FLAGS(h) ((h)->filehdr.f_flags)
746 /* Extra fields to achieve bsd a.out compatibility and for convenience. */
747 #define H_GET_RELOCATION_SIZE(h) ((h)->relocation_size)
748 #define H_GET_STRING_SIZE(h) ((h)->string_table_size)
749 #define H_GET_LINENO_SIZE(h) ((h)->lineno_size)
750
751 #ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER
752 #define H_GET_HEADER_SIZE(h) (sizeof (FILHDR) \
753 + sizeof (AOUTHDR)\
754 + (H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ))
755 #else /* OBJ_COFF_OMIT_OPTIONAL_HEADER */
756 #define H_GET_HEADER_SIZE(h) (sizeof (FILHDR) \
757 + (H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ))
758 #endif /* OBJ_COFF_OMIT_OPTIONAL_HEADER */
759
760 #define H_GET_TEXT_RELOCATION_SIZE(h) (text_section_header.s_nreloc * RELSZ)
761 #define H_GET_DATA_RELOCATION_SIZE(h) (data_section_header.s_nreloc * RELSZ)
762
763 /* Modifiers. */
764 /* aouthdr. */
765 #define H_SET_MAGIC_NUMBER(h,v) ((h)->aouthdr.magic = (v))
766 #define H_SET_VERSION_STAMP(h,v) ((h)->aouthdr.vstamp = (v))
767 #define H_SET_TEXT_SIZE(h,v) ((h)->aouthdr.tsize = (v))
768 #define H_SET_DATA_SIZE(h,v) ((h)->aouthdr.dsize = (v))
769 #define H_SET_BSS_SIZE(h,v) ((h)->aouthdr.bsize = (v))
770 #define H_SET_ENTRY_POINT(h,v) ((h)->aouthdr.entry = (v))
771 #define H_SET_TEXT_START(h,v) ((h)->aouthdr.text_start = (v))
772 #define H_SET_DATA_START(h,v) ((h)->aouthdr.data_start = (v))
773 /* filehdr. */
774 #define H_SET_FILE_MAGIC_NUMBER(h,v) ((h)->filehdr.f_magic = (v))
775 #define H_SET_NUMBER_OF_SECTIONS(h,v) ((h)->filehdr.f_nscns = (v))
776 #define H_SET_TIME_STAMP(h,v) ((h)->filehdr.f_timdat = (v))
777 #define H_SET_SYMBOL_TABLE_POINTER(h,v) ((h)->filehdr.f_symptr = (v))
778 #define H_SET_SYMBOL_TABLE_SIZE(h,v) ((h)->filehdr.f_nsyms = (v))
779 #define H_SET_SIZEOF_OPTIONAL_HEADER(h,v) ((h)->filehdr.f_opthdr = (v))
780 #define H_SET_FLAGS(h,v) ((h)->filehdr.f_flags = (v))
781 /* Extra fields to achieve bsd a.out compatibility and for convenience. */
782 #define H_SET_RELOCATION_SIZE(h,t,d) ((h)->relocation_size = (t)+(d))
783 #define H_SET_STRING_SIZE(h,v) ((h)->string_table_size = (v))
784 #define H_SET_LINENO_SIZE(h,v) ((h)->lineno_size = (v))
785
786 /* Segment flipping. */
787
788 typedef struct
789 {
790 struct internal_aouthdr aouthdr; /* a.out header. */
791 struct internal_filehdr filehdr; /* File header, not machine dep. */
792 long string_table_size; /* names + '\0' + sizeof (int). */
793 long relocation_size; /* Cumulated size of relocation
794 information for all sections in
795 bytes. */
796 long lineno_size; /* Size of the line number information
797 table in bytes. */
798 } object_headers;
799
800 struct lineno_list
801 {
802 struct bfd_internal_lineno line;
803 char *frag; /* Frag to which the line number is related. */
804 struct lineno_list *next; /* Forward chain pointer. */
805 };
806
807 #define obj_segment_name(i) (segment_info[(int) (i)].scnhdr.s_name)
808
809 #define obj_add_segment(s) obj_coff_add_segment (s)
810
811 /* Sanity check. */
812 #ifdef TC_I960
813 #ifndef C_LEAFSTAT
814 hey ! Where is the C_LEAFSTAT definition ? i960 - coff support is depending on it.
815 #endif /* no C_LEAFSTAT */
816 #endif /* TC_I960 */
817
818 extern struct internal_scnhdr data_section_header;
819 extern struct internal_scnhdr text_section_header;
820
821 /* Forward the segment of a forwarded symbol. */
822 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest,src) \
823 (SF_GET_GET_SEGMENT (dest) \
824 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \
825 : 0)
826
827 #ifdef TE_PE
828 #define obj_handle_link_once(t) obj_coff_pe_handle_link_once (t)
829 #endif
830
831 #endif /* not BFD_ASSEMBLER */
832
833 extern const pseudo_typeS coff_pseudo_table[];
834
835 #ifndef obj_pop_insert
836 #define obj_pop_insert() pop_insert (coff_pseudo_table)
837 #endif
838
839 /* In COFF, if a symbol is defined using .def/.val SYM/.endef, it's OK
840 to redefine the symbol later on. This can happen if C symbols use
841 a prefix, and a symbol is defined both with and without the prefix,
842 as in start/_start/__start in gcc/libgcc1-test.c. */
843 #define RESOLVE_SYMBOL_REDEFINITION(sym) \
844 (SF_GET_GET_SEGMENT (sym) \
845 ? (sym->sy_frag = frag_now, \
846 S_SET_VALUE (sym, frag_now_fix ()), \
847 S_SET_SEGMENT (sym, now_seg), \
848 0) \
849 : 0)
850
851 /* Stabs in a coff file go into their own section. */
852 #define SEPARATE_STAB_SECTIONS 1
853
854 /* We need 12 bytes at the start of the section to hold some initial
855 information. */
856 #define INIT_STAB_SECTION(seg) obj_coff_init_stab_section (seg)
857
858 /* Store the number of relocations in the section aux entry. */
859 #define SET_SECTION_RELOCS(sec, relocs, n) \
860 SA_SET_SCN_NRELOC (section_symbol (sec), n)
861
862 #define obj_app_file(name, app) c_dot_file_symbol (name, app)
863
864 #ifdef BFD_ASSEMBLER
865 extern int S_SET_DATA_TYPE (symbolS *, int);
866 extern int S_SET_STORAGE_CLASS (symbolS *, int);
867 extern int S_GET_STORAGE_CLASS (symbolS *);
868 extern void SA_SET_SYM_ENDNDX (symbolS *, symbolS *);
869 extern void coff_add_linesym (symbolS *);
870 extern void c_dot_file_symbol (const char *, int);
871 extern void coff_frob_symbol (symbolS *, int *);
872 extern void coff_adjust_symtab (void);
873 extern void coff_frob_section (segT);
874 extern void coff_adjust_section_syms (bfd *, asection *, void *);
875 extern void coff_frob_file_after_relocs (void);
876 #else
877 extern void obj_extra_stuff (object_headers *);
878 #endif
879 extern void coff_obj_symbol_new_hook (symbolS *);
880 extern void coff_obj_read_begin_hook (void);
881 extern void obj_coff_section (int);
882 extern segT obj_coff_add_segment (const char *);
883 extern void obj_coff_section (int);
884 extern void c_dot_file_symbol (const char *, int);
885 extern segT s_get_segment (symbolS *);
886 #ifndef tc_coff_symbol_emit_hook
887 extern void tc_coff_symbol_emit_hook (symbolS *);
888 #endif
889 extern void obj_coff_pe_handle_link_once (void);
890 extern void obj_coff_init_stab_section (segT);
891 extern void c_section_header (struct internal_scnhdr *,
892 char *, long, long, long, long,
893 long, long, long, long);
894 #endif /* OBJ_FORMAT_H */