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1 /* coff object file format
2 Copyright (C) 1989, 90, 91, 92, 94, 95, 96, 97, 98, 99, 2000
3 Free Software Foundation, Inc.
4
5 This file is part of GAS.
6
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
10 any later version.
11
12 GAS 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 GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
20 02111-1307, USA. */
21
22 #ifndef OBJ_FORMAT_H
23 #define OBJ_FORMAT_H
24
25 #define OBJ_COFF 1
26
27 #ifndef BFD_ASSEMBLER
28
29 #define WORKING_DOT_WORD
30 #define WARN_SIGNED_OVERFLOW_WORD
31 #define OBJ_COFF_OMIT_OPTIONAL_HEADER
32 #define BFD_HEADERS
33 #define BFD
34
35 #endif
36
37 #include "targ-cpu.h"
38
39 #include "bfd.h"
40
41 /* This internal_lineno crap is to stop namespace pollution from the
42 bfd internal coff headerfile. */
43 #define internal_lineno bfd_internal_lineno
44 #include "coff/internal.h"
45 #undef internal_lineno
46
47 /* CPU-specific setup: */
48
49 #ifdef TC_ARM
50 #include "coff/arm.h"
51 #ifndef TARGET_FORMAT
52 #define TARGET_FORMAT "coff-arm"
53 #endif
54 #endif
55
56 #ifdef TC_PPC
57 #ifdef TE_PE
58 #include "coff/powerpc.h"
59 #else
60 #include "coff/rs6000.h"
61 #endif
62 #endif
63
64 #ifdef TC_SPARC
65 #include "coff/sparc.h"
66 #endif
67
68 #ifdef TC_I386
69 #include "coff/i386.h"
70
71 #ifdef TE_PE
72 #define TARGET_FORMAT "pe-i386"
73 #endif
74
75 #ifndef TARGET_FORMAT
76 #define TARGET_FORMAT "coff-i386"
77 #endif
78 #endif
79
80 #ifdef TC_M68K
81 #include "coff/m68k.h"
82 #ifndef TARGET_FORMAT
83 #define TARGET_FORMAT "coff-m68k"
84 #endif
85 #endif
86
87 #ifdef TC_A29K
88 #include "coff/a29k.h"
89 #define TARGET_FORMAT "coff-a29k-big"
90 #endif
91
92 #ifdef TC_I960
93 #include "coff/i960.h"
94 #define TARGET_FORMAT "coff-Intel-little"
95 #endif
96
97 #ifdef TC_Z8K
98 #include "coff/z8k.h"
99 #define TARGET_FORMAT "coff-z8k"
100 #endif
101
102 #ifdef TC_H8300
103 #include "coff/h8300.h"
104 #define TARGET_FORMAT "coff-h8300"
105 #endif
106
107 #ifdef TC_H8500
108 #include "coff/h8500.h"
109 #define TARGET_FORMAT "coff-h8500"
110 #endif
111
112 #ifdef TC_SH
113
114 #ifdef TE_PE
115 #define COFF_WITH_PE
116 #endif
117
118 #include "coff/sh.h"
119
120 #ifdef TE_PE
121 #define TARGET_FORMAT "pe-shl"
122 #else
123 #define TARGET_FORMAT \
124 (shl \
125 ? (sh_small ? "coff-shl-small" : "coff-shl") \
126 : (sh_small ? "coff-sh-small" : "coff-sh"))
127 #endif
128 #endif
129
130 #ifdef TC_MIPS
131 #define COFF_WITH_PE
132 #include "coff/mipspe.h"
133 #undef TARGET_FORMAT
134 #define TARGET_FORMAT "pe-mips"
135 #endif
136
137 #ifdef TC_M88K
138 #include "coff/m88k.h"
139 #define TARGET_FORMAT "coff-m88kbcs"
140 #endif
141
142 #ifdef TC_W65
143 #include "coff/w65.h"
144 #define TARGET_FORMAT "coff-w65"
145 #endif
146
147 #ifdef TC_TIC30
148 #include "coff/tic30.h"
149 #define TARGET_FORMAT "coff-tic30"
150 #endif
151
152 #ifdef TC_TIC80
153 #include "coff/tic80.h"
154 #define TARGET_FORMAT "coff-tic80"
155 #define ALIGNMENT_IN_S_FLAGS 1
156 #endif
157
158 #ifdef TC_MCORE
159 #include "coff/mcore.h"
160 #ifndef TARGET_FORMAT
161 #define TARGET_FORMAT "pe-mcore"
162 #endif
163 #endif
164
165 /* Targets may also set this. Also, if BFD_ASSEMBLER is defined, this
166 will already have been defined. */
167 #undef SYMBOLS_NEED_BACKPOINTERS
168 #define SYMBOLS_NEED_BACKPOINTERS 1
169
170 #ifndef OBJ_COFF_MAX_AUXENTRIES
171 #define OBJ_COFF_MAX_AUXENTRIES 1
172 #endif /* OBJ_COFF_MAX_AUXENTRIES */
173
174 extern void coff_obj_symbol_new_hook PARAMS ((symbolS *));
175 #define obj_symbol_new_hook coff_obj_symbol_new_hook
176
177 extern void coff_obj_read_begin_hook PARAMS ((void));
178 #define obj_read_begin_hook coff_obj_read_begin_hook
179
180 /* ***********************************************************************
181
182 This file really contains two implementations of the COFF back end.
183 They are in the process of being merged, but this is only a
184 preliminary, mechanical merging. Many definitions that are
185 identical between the two are still found in both versions.
186
187 The first version, with BFD_ASSEMBLER defined, uses high-level BFD
188 interfaces and data structures. The second version, with
189 BFD_ASSEMBLER not defined, also uses BFD, but mostly for swapping
190 data structures and for doing the actual I/O. The latter defines
191 the preprocessor symbols BFD and BFD_HEADERS. Try not to let this
192 confuse you.
193
194 These two are in the process of being merged, and eventually the
195 BFD_ASSEMBLER version should take over completely. Release timing
196 issues and namespace problems convinced me to merge the two
197 together in this fashion, a little sooner than I would have liked.
198 The real merge should be much better done by the time the next
199 release comes out.
200
201 For now, the structure of this file is:
202 <common>
203 #ifdef BFD_ASSEMBLER
204 <one version>
205 #else
206 <other version>
207 #endif
208 <common>
209 Unfortunately, the common portions are very small at the moment,
210 and many declarations or definitions are duplicated. The structure
211 of obj-coff.c is similar.
212
213 See doc/internals.texi for a brief discussion of the history, if
214 you care.
215
216 Ken Raeburn, 5 May 1994
217
218 *********************************************************************** */
219
220 #ifdef BFD_ASSEMBLER
221
222 #include "bfd/libcoff.h"
223
224 #define OUTPUT_FLAVOR bfd_target_coff_flavour
225
226 /* SYMBOL TABLE */
227
228 /* Alter the field names, for now, until we've fixed up the other
229 references to use the new name. */
230 #ifdef TC_I960
231 #define TC_SYMFIELD_TYPE symbolS *
232 #define sy_tc bal
233 #endif
234
235 #define OBJ_SYMFIELD_TYPE unsigned long
236 #define sy_obj sy_flags
237
238 #define SYM_AUXENT(S) \
239 (&coffsymbol (symbol_get_bfdsym (S))->native[1].u.auxent)
240 #define SYM_AUXINFO(S) \
241 (&coffsymbol (symbol_get_bfdsym (S))->native[1])
242
243 #define DO_NOT_STRIP 0
244
245 extern void obj_coff_section PARAMS ((int));
246
247 /* The number of auxiliary entries */
248 #define S_GET_NUMBER_AUXILIARY(s) \
249 (coffsymbol (symbol_get_bfdsym (s))->native->u.syment.n_numaux)
250 /* The number of auxiliary entries */
251 #define S_SET_NUMBER_AUXILIARY(s,v) (S_GET_NUMBER_AUXILIARY (s) = (v))
252
253 /* True if a symbol name is in the string table, i.e. its length is > 8. */
254 #define S_IS_STRING(s) (strlen(S_GET_NAME(s)) > 8 ? 1 : 0)
255
256 extern int S_SET_DATA_TYPE PARAMS ((symbolS *, int));
257 extern int S_SET_STORAGE_CLASS PARAMS ((symbolS *, int));
258 extern int S_GET_STORAGE_CLASS PARAMS ((symbolS *));
259 extern void SA_SET_SYM_ENDNDX PARAMS ((symbolS *, symbolS *));
260
261 /* Auxiliary entry macros. SA_ stands for symbol auxiliary */
262 /* Omit the tv related fields */
263 /* Accessors */
264
265 #define SA_GET_SYM_TAGNDX(s) (SYM_AUXENT (s)->x_sym.x_tagndx.l)
266 #define SA_GET_SYM_LNNO(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno)
267 #define SA_GET_SYM_SIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size)
268 #define SA_GET_SYM_FSIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize)
269 #define SA_GET_SYM_LNNOPTR(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr)
270 #define SA_GET_SYM_ENDNDX(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx)
271 #define SA_GET_SYM_DIMEN(s,i) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)])
272 #define SA_GET_FILE_FNAME(s) (SYM_AUXENT (s)->x_file.x_fname)
273 #define SA_GET_SCN_SCNLEN(s) (SYM_AUXENT (s)->x_scn.x_scnlen)
274 #define SA_GET_SCN_NRELOC(s) (SYM_AUXENT (s)->x_scn.x_nreloc)
275 #define SA_GET_SCN_NLINNO(s) (SYM_AUXENT (s)->x_scn.x_nlinno)
276
277 #define SA_SET_SYM_LNNO(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno=(v))
278 #define SA_SET_SYM_SIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size=(v))
279 #define SA_SET_SYM_FSIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize=(v))
280 #define SA_SET_SYM_LNNOPTR(s,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr=(v))
281 #define SA_SET_SYM_DIMEN(s,i,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)]=(v))
282 #define SA_SET_FILE_FNAME(s,v) strncpy(SYM_AUXENT (s)->x_file.x_fname,(v),FILNMLEN)
283 #define SA_SET_SCN_SCNLEN(s,v) (SYM_AUXENT (s)->x_scn.x_scnlen=(v))
284 #define SA_SET_SCN_NRELOC(s,v) (SYM_AUXENT (s)->x_scn.x_nreloc=(v))
285 #define SA_SET_SCN_NLINNO(s,v) (SYM_AUXENT (s)->x_scn.x_nlinno=(v))
286
287 /*
288 * Internal use only definitions. SF_ stands for symbol flags.
289 *
290 * These values can be assigned to sy_symbol.ost_flags field of a symbolS.
291 *
292 * You'll break i960 if you shift the SYSPROC bits anywhere else. for
293 * more on the balname/callname hack, see tc-i960.h. b.out is done
294 * differently.
295 */
296
297 #define SF_I960_MASK (0x000001ff) /* Bits 0-8 are used by the i960 port. */
298 #define SF_SYSPROC (0x0000003f) /* bits 0-5 are used to store the sysproc number */
299 #define SF_IS_SYSPROC (0x00000040) /* bit 6 marks symbols that are sysprocs */
300 #define SF_BALNAME (0x00000080) /* bit 7 marks BALNAME symbols */
301 #define SF_CALLNAME (0x00000100) /* bit 8 marks CALLNAME symbols */
302
303 #define SF_NORMAL_MASK (0x0000ffff) /* bits 12-15 are general purpose. */
304
305 #define SF_STATICS (0x00001000) /* Mark the .text & all symbols */
306 #define SF_DEFINED (0x00002000) /* Symbol is defined in this file */
307 #define SF_STRING (0x00004000) /* Symbol name length > 8 */
308 #define SF_LOCAL (0x00008000) /* Symbol must not be emitted */
309
310 #define SF_DEBUG_MASK (0xffff0000) /* bits 16-31 are debug info */
311
312 #define SF_FUNCTION (0x00010000) /* The symbol is a function */
313 #define SF_PROCESS (0x00020000) /* Process symbol before write */
314 #define SF_TAGGED (0x00040000) /* Is associated with a tag */
315 #define SF_TAG (0x00080000) /* Is a tag */
316 #define SF_DEBUG (0x00100000) /* Is in debug or abs section */
317 #define SF_GET_SEGMENT (0x00200000) /* Get the section of the forward symbol. */
318 /* All other bits are unused. */
319
320 /* Accessors */
321 #define SF_GET(s) (*symbol_get_obj (s))
322 #define SF_GET_DEBUG(s) (symbol_get_bfdsym (s)->flags & BSF_DEBUGGING)
323 #define SF_SET_DEBUG(s) (symbol_get_bfdsym (s)->flags |= BSF_DEBUGGING)
324 #define SF_GET_NORMAL_FIELD(s) (SF_GET (s) & SF_NORMAL_MASK)
325 #define SF_GET_DEBUG_FIELD(s) (SF_GET (s) & SF_DEBUG_MASK)
326 #define SF_GET_FILE(s) (SF_GET (s) & SF_FILE)
327 #define SF_GET_STATICS(s) (SF_GET (s) & SF_STATICS)
328 #define SF_GET_DEFINED(s) (SF_GET (s) & SF_DEFINED)
329 #define SF_GET_STRING(s) (SF_GET (s) & SF_STRING)
330 #define SF_GET_LOCAL(s) (SF_GET (s) & SF_LOCAL)
331 #define SF_GET_FUNCTION(s) (SF_GET (s) & SF_FUNCTION)
332 #define SF_GET_PROCESS(s) (SF_GET (s) & SF_PROCESS)
333 #define SF_GET_TAGGED(s) (SF_GET (s) & SF_TAGGED)
334 #define SF_GET_TAG(s) (SF_GET (s) & SF_TAG)
335 #define SF_GET_GET_SEGMENT(s) (SF_GET (s) & SF_GET_SEGMENT)
336 #define SF_GET_I960(s) (SF_GET (s) & SF_I960_MASK) /* used by i960 */
337 #define SF_GET_BALNAME(s) (SF_GET (s) & SF_BALNAME) /* used by i960 */
338 #define SF_GET_CALLNAME(s) (SF_GET (s) & SF_CALLNAME) /* used by i960 */
339 #define SF_GET_IS_SYSPROC(s) (SF_GET (s) & SF_IS_SYSPROC) /* used by i960 */
340 #define SF_GET_SYSPROC(s) (SF_GET (s) & SF_SYSPROC) /* used by i960 */
341
342 /* Modifiers */
343 #define SF_SET(s,v) (SF_GET (s) = (v))
344 #define SF_SET_NORMAL_FIELD(s,v)(SF_GET (s) |= ((v) & SF_NORMAL_MASK))
345 #define SF_SET_DEBUG_FIELD(s,v) (SF_GET (s) |= ((v) & SF_DEBUG_MASK))
346 #define SF_SET_FILE(s) (SF_GET (s) |= SF_FILE)
347 #define SF_SET_STATICS(s) (SF_GET (s) |= SF_STATICS)
348 #define SF_SET_DEFINED(s) (SF_GET (s) |= SF_DEFINED)
349 #define SF_SET_STRING(s) (SF_GET (s) |= SF_STRING)
350 #define SF_SET_LOCAL(s) (SF_GET (s) |= SF_LOCAL)
351 #define SF_CLEAR_LOCAL(s) (SF_GET (s) &= ~SF_LOCAL)
352 #define SF_SET_FUNCTION(s) (SF_GET (s) |= SF_FUNCTION)
353 #define SF_SET_PROCESS(s) (SF_GET (s) |= SF_PROCESS)
354 #define SF_SET_TAGGED(s) (SF_GET (s) |= SF_TAGGED)
355 #define SF_SET_TAG(s) (SF_GET (s) |= SF_TAG)
356 #define SF_SET_GET_SEGMENT(s) (SF_GET (s) |= SF_GET_SEGMENT)
357 #define SF_SET_I960(s,v) (SF_GET (s) |= ((v) & SF_I960_MASK)) /* used by i960 */
358 #define SF_SET_BALNAME(s) (SF_GET (s) |= SF_BALNAME) /* used by i960 */
359 #define SF_SET_CALLNAME(s) (SF_GET (s) |= SF_CALLNAME) /* used by i960 */
360 #define SF_SET_IS_SYSPROC(s) (SF_GET (s) |= SF_IS_SYSPROC) /* used by i960 */
361 #define SF_SET_SYSPROC(s,v) (SF_GET (s) |= ((v) & SF_SYSPROC)) /* used by i960 */
362
363 /* -------------- Line number handling ------- */
364 extern int text_lineno_number;
365 extern int coff_line_base;
366 extern int coff_n_line_nos;
367
368 #define obj_emit_lineno(WHERE,LINE,FILE_START) abort ()
369 extern void coff_add_linesym PARAMS ((symbolS *));
370
371
372 void c_dot_file_symbol PARAMS ((const char *filename));
373 #define obj_app_file c_dot_file_symbol
374
375 extern void coff_frob_symbol PARAMS ((symbolS *, int *));
376 extern void coff_adjust_symtab PARAMS ((void));
377 extern void coff_frob_section PARAMS ((segT));
378 extern void coff_adjust_section_syms PARAMS ((bfd *, asection *, PTR));
379 extern void coff_frob_file_after_relocs PARAMS ((void));
380 #define obj_frob_symbol(S,P) coff_frob_symbol(S,&P)
381 #ifndef obj_adjust_symtab
382 #define obj_adjust_symtab() coff_adjust_symtab()
383 #endif
384 #define obj_frob_section(S) coff_frob_section (S)
385 #define obj_frob_file_after_relocs() coff_frob_file_after_relocs ()
386
387 extern symbolS *coff_last_function;
388
389 /* Forward the segment of a forwarded symbol, handle assignments that
390 just copy symbol values, etc. */
391 #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
392 #ifndef TE_I386AIX
393 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest,src) \
394 (SF_GET_GET_SEGMENT (dest) \
395 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \
396 : 0)
397 #else
398 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest,src) \
399 (SF_GET_GET_SEGMENT (dest) && S_GET_SEGMENT (dest) == SEG_UNKNOWN \
400 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \
401 : 0)
402 #endif
403 #endif
404
405 /* sanity check */
406
407 #ifdef TC_I960
408 #ifndef C_LEAFSTAT
409 hey ! Where is the C_LEAFSTAT definition ? i960 - coff support is depending on it.
410 #endif /* no C_LEAFSTAT */
411 #endif /* TC_I960 */
412
413 #else /* not BFD_ASSEMBLER */
414
415 #ifdef TC_A29K
416 /* Allow translate from aout relocs to coff relocs */
417 #define NO_RELOC 20
418 #define RELOC_32 1
419 #define RELOC_8 2
420 #define RELOC_CONST 3
421 #define RELOC_CONSTH 4
422 #define RELOC_JUMPTARG 5
423 #define RELOC_BASE22 6
424 #define RELOC_HI22 7
425 #define RELOC_LO10 8
426 #define RELOC_BASE13 9
427 #define RELOC_WDISP22 10
428 #define RELOC_WDISP30 11
429 #endif
430
431 extern const segT N_TYPE_seg[];
432
433 /* Magic number of paged executable. */
434 #define DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE 0x8300
435
436
437 /* SYMBOL TABLE */
438
439 /* Symbol table entry data type */
440
441 typedef struct
442 {
443 /* Basic symbol */
444 struct internal_syment ost_entry;
445 /* Auxiliary entry. */
446 union internal_auxent ost_auxent[OBJ_COFF_MAX_AUXENTRIES];
447 /* obj_coff internal use only flags */
448 unsigned int ost_flags;
449 } obj_symbol_type;
450
451 #ifndef DO_NOT_STRIP
452 #define DO_NOT_STRIP 0
453 #endif
454 /* Symbol table macros and constants */
455
456 /* Possible and usefull section number in symbol table
457 * The values of TEXT, DATA and BSS may not be portable.
458 */
459
460 #define C_ABS_SECTION N_ABS
461 #define C_UNDEF_SECTION N_UNDEF
462 #define C_DEBUG_SECTION N_DEBUG
463 #define C_NTV_SECTION N_TV
464 #define C_PTV_SECTION P_TV
465 #define C_REGISTER_SECTION 50
466
467 /*
468 * Macros to extract information from a symbol table entry.
469 * This syntaxic indirection allows independence regarding a.out or coff.
470 * The argument (s) of all these macros is a pointer to a symbol table entry.
471 */
472
473 /* Predicates */
474 /* True if the symbol is external */
475 #define S_IS_EXTERNAL(s) ((s)->sy_symbol.ost_entry.n_scnum == C_UNDEF_SECTION)
476 /* True if symbol has been defined, ie :
477 section > 0 (DATA, TEXT or BSS)
478 section == 0 and value > 0 (external bss symbol) */
479 #define S_IS_DEFINED(s) \
480 ((s)->sy_symbol.ost_entry.n_scnum > C_UNDEF_SECTION \
481 || ((s)->sy_symbol.ost_entry.n_scnum == C_UNDEF_SECTION \
482 && S_GET_VALUE (s) > 0) \
483 || ((s)->sy_symbol.ost_entry.n_scnum == C_ABS_SECTION))
484 /* True if a debug special symbol entry */
485 #define S_IS_DEBUG(s) ((s)->sy_symbol.ost_entry.n_scnum == C_DEBUG_SECTION)
486 /* True if a symbol is local symbol name */
487 /* A symbol name whose name includes ^A is a gas internal pseudo symbol */
488 #define S_IS_LOCAL(s) \
489 ((s)->sy_symbol.ost_entry.n_scnum == C_REGISTER_SECTION \
490 || (S_LOCAL_NAME(s) && ! flag_keep_locals && ! S_IS_DEBUG (s)) \
491 || strchr (S_GET_NAME (s), '\001') != NULL \
492 || strchr (S_GET_NAME (s), '\002') != NULL \
493 || (flag_strip_local_absolute \
494 && !S_IS_EXTERNAL(s) \
495 && (s)->sy_symbol.ost_entry.n_scnum == C_ABS_SECTION))
496 /* True if a symbol is not defined in this file */
497 #define S_IS_EXTERN(s) ((s)->sy_symbol.ost_entry.n_scnum == 0 \
498 && S_GET_VALUE (s) == 0)
499 /*
500 * True if a symbol can be multiply defined (bss symbols have this def
501 * though it is bad practice)
502 */
503 #define S_IS_COMMON(s) ((s)->sy_symbol.ost_entry.n_scnum == 0 \
504 && S_GET_VALUE (s) != 0)
505 /* True if a symbol name is in the string table, i.e. its length is > 8. */
506 #define S_IS_STRING(s) (strlen(S_GET_NAME(s)) > 8 ? 1 : 0)
507
508 /* True if a symbol is defined as weak. */
509 #ifdef TE_PE
510 #define S_IS_WEAK(s) \
511 ((s)->sy_symbol.ost_entry.n_sclass == C_NT_WEAK \
512 || (s)->sy_symbol.ost_entry.n_sclass == C_WEAKEXT)
513 #else
514 #define S_IS_WEAK(s) \
515 ((s)->sy_symbol.ost_entry.n_sclass == C_WEAKEXT)
516 #endif
517
518 /* Accessors */
519 /* The name of the symbol */
520 #define S_GET_NAME(s) ((char*)(s)->sy_symbol.ost_entry.n_offset)
521 /* The pointer to the string table */
522 #define S_GET_OFFSET(s) ((s)->sy_symbol.ost_entry.n_offset)
523 /* The numeric value of the segment */
524 #define S_GET_SEGMENT(s) s_get_segment(s)
525 /* The data type */
526 #define S_GET_DATA_TYPE(s) ((s)->sy_symbol.ost_entry.n_type)
527 /* The storage class */
528 #define S_GET_STORAGE_CLASS(s) ((s)->sy_symbol.ost_entry.n_sclass)
529 /* The number of auxiliary entries */
530 #define S_GET_NUMBER_AUXILIARY(s) ((s)->sy_symbol.ost_entry.n_numaux)
531
532 /* Modifiers */
533 /* Set the name of the symbol */
534 #define S_SET_NAME(s,v) ((s)->sy_symbol.ost_entry.n_offset = (unsigned long)(v))
535 /* Set the offset of the symbol */
536 #define S_SET_OFFSET(s,v) ((s)->sy_symbol.ost_entry.n_offset = (v))
537 /* The numeric value of the segment */
538 #define S_SET_SEGMENT(s,v) ((s)->sy_symbol.ost_entry.n_scnum = SEGMENT_TO_SYMBOL_TYPE(v))
539 /* The data type */
540 #define S_SET_DATA_TYPE(s,v) ((s)->sy_symbol.ost_entry.n_type = (v))
541 /* The storage class */
542 #define S_SET_STORAGE_CLASS(s,v) ((s)->sy_symbol.ost_entry.n_sclass = (v))
543 /* The number of auxiliary entries */
544 #define S_SET_NUMBER_AUXILIARY(s,v) ((s)->sy_symbol.ost_entry.n_numaux = (v))
545
546 /* Additional modifiers */
547 /* The symbol is external (does not mean undefined) */
548 #define S_SET_EXTERNAL(s) { S_SET_STORAGE_CLASS(s, C_EXT) ; SF_CLEAR_LOCAL(s); }
549
550 /* Auxiliary entry macros. SA_ stands for symbol auxiliary */
551 /* Omit the tv related fields */
552 /* Accessors */
553 #define SYM_AUXENT(S) (&(S)->sy_symbol.ost_auxent[0])
554
555 #define SA_GET_SYM_TAGNDX(s) (SYM_AUXENT (s)->x_sym.x_tagndx.l)
556 #define SA_GET_SYM_LNNO(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno)
557 #define SA_GET_SYM_SIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size)
558 #define SA_GET_SYM_FSIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize)
559 #define SA_GET_SYM_LNNOPTR(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr)
560 #define SA_GET_SYM_ENDNDX(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx.l)
561 #define SA_GET_SYM_DIMEN(s,i) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)])
562 #define SA_GET_FILE_FNAME(s) (SYM_AUXENT (s)->x_file.x_fname)
563 #define SA_GET_FILE_FNAME_OFFSET(s) (SYM_AUXENT (s)->x_file.x_n.x_offset)
564 #define SA_GET_FILE_FNAME_ZEROS(s) (SYM_AUXENT (s)->x_file.x_n.x_zeroes)
565 #define SA_GET_SCN_SCNLEN(s) (SYM_AUXENT (s)->x_scn.x_scnlen)
566 #define SA_GET_SCN_NRELOC(s) (SYM_AUXENT (s)->x_scn.x_nreloc)
567 #define SA_GET_SCN_NLINNO(s) (SYM_AUXENT (s)->x_scn.x_nlinno)
568
569 /* Modifiers */
570 #define SA_SET_SYM_TAGNDX(s,v) (SYM_AUXENT (s)->x_sym.x_tagndx.l=(v))
571 #define SA_SET_SYM_LNNO(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno=(v))
572 #define SA_SET_SYM_SIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size=(v))
573 #define SA_SET_SYM_FSIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize=(v))
574 #define SA_SET_SYM_LNNOPTR(s,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr=(v))
575 #define SA_SET_SYM_ENDNDX(s,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx.l=(v))
576 #define SA_SET_SYM_DIMEN(s,i,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)]=(v))
577 #define SA_SET_FILE_FNAME(s,v) strncpy(SYM_AUXENT (s)->x_file.x_fname,(v),FILNMLEN)
578 #define SA_SET_FILE_FNAME_OFFSET(s,v) (SYM_AUXENT (s)->x_file.x_n.x_offset=(v))
579 #define SA_SET_FILE_FNAME_ZEROS(s,v) (SYM_AUXENT (s)->x_file.x_n.x_zeroes=(v))
580 #define SA_SET_SCN_SCNLEN(s,v) (SYM_AUXENT (s)->x_scn.x_scnlen=(v))
581 #define SA_SET_SCN_NRELOC(s,v) (SYM_AUXENT (s)->x_scn.x_nreloc=(v))
582 #define SA_SET_SCN_NLINNO(s,v) (SYM_AUXENT (s)->x_scn.x_nlinno=(v))
583
584 /*
585 * Internal use only definitions. SF_ stands for symbol flags.
586 *
587 * These values can be assigned to sy_symbol.ost_flags field of a symbolS.
588 *
589 * You'll break i960 if you shift the SYSPROC bits anywhere else. for
590 * more on the balname/callname hack, see tc-i960.h. b.out is done
591 * differently.
592 */
593
594 #define SF_I960_MASK (0x000001ff) /* Bits 0-8 are used by the i960 port. */
595 #define SF_SYSPROC (0x0000003f) /* bits 0-5 are used to store the sysproc number */
596 #define SF_IS_SYSPROC (0x00000040) /* bit 6 marks symbols that are sysprocs */
597 #define SF_BALNAME (0x00000080) /* bit 7 marks BALNAME symbols */
598 #define SF_CALLNAME (0x00000100) /* bit 8 marks CALLNAME symbols */
599
600 #define SF_NORMAL_MASK (0x0000ffff) /* bits 12-15 are general purpose. */
601
602 #define SF_STATICS (0x00001000) /* Mark the .text & all symbols */
603 #define SF_DEFINED (0x00002000) /* Symbol is defined in this file */
604 #define SF_STRING (0x00004000) /* Symbol name length > 8 */
605 #define SF_LOCAL (0x00008000) /* Symbol must not be emitted */
606
607 #define SF_DEBUG_MASK (0xffff0000) /* bits 16-31 are debug info */
608
609 #define SF_FUNCTION (0x00010000) /* The symbol is a function */
610 #define SF_PROCESS (0x00020000) /* Process symbol before write */
611 #define SF_TAGGED (0x00040000) /* Is associated with a tag */
612 #define SF_TAG (0x00080000) /* Is a tag */
613 #define SF_DEBUG (0x00100000) /* Is in debug or abs section */
614 #define SF_GET_SEGMENT (0x00200000) /* Get the section of the forward symbol. */
615 #define SF_ADJ_LNNOPTR (0x00400000) /* Has a lnnoptr */
616 /* All other bits are unused. */
617
618 /* Accessors */
619 #define SF_GET(s) ((s)->sy_symbol.ost_flags)
620 #define SF_GET_NORMAL_FIELD(s) (SF_GET (s) & SF_NORMAL_MASK)
621 #define SF_GET_DEBUG_FIELD(s) (SF_GET (s) & SF_DEBUG_MASK)
622 #define SF_GET_FILE(s) (SF_GET (s) & SF_FILE)
623 #define SF_GET_STATICS(s) (SF_GET (s) & SF_STATICS)
624 #define SF_GET_DEFINED(s) (SF_GET (s) & SF_DEFINED)
625 #define SF_GET_STRING(s) (SF_GET (s) & SF_STRING)
626 #define SF_GET_LOCAL(s) (SF_GET (s) & SF_LOCAL)
627 #define SF_GET_FUNCTION(s) (SF_GET (s) & SF_FUNCTION)
628 #define SF_GET_PROCESS(s) (SF_GET (s) & SF_PROCESS)
629 #define SF_GET_DEBUG(s) (SF_GET (s) & SF_DEBUG)
630 #define SF_GET_TAGGED(s) (SF_GET (s) & SF_TAGGED)
631 #define SF_GET_TAG(s) (SF_GET (s) & SF_TAG)
632 #define SF_GET_GET_SEGMENT(s) (SF_GET (s) & SF_GET_SEGMENT)
633 #define SF_GET_ADJ_LNNOPTR(s) (SF_GET (s) & SF_ADJ_LNNOPTR)
634 #define SF_GET_I960(s) (SF_GET (s) & SF_I960_MASK) /* used by i960 */
635 #define SF_GET_BALNAME(s) (SF_GET (s) & SF_BALNAME) /* used by i960 */
636 #define SF_GET_CALLNAME(s) (SF_GET (s) & SF_CALLNAME) /* used by i960 */
637 #define SF_GET_IS_SYSPROC(s) (SF_GET (s) & SF_IS_SYSPROC) /* used by i960 */
638 #define SF_GET_SYSPROC(s) (SF_GET (s) & SF_SYSPROC) /* used by i960 */
639
640 /* Modifiers */
641 #define SF_SET(s,v) (SF_GET (s) = (v))
642 #define SF_SET_NORMAL_FIELD(s,v)(SF_GET (s) |= ((v) & SF_NORMAL_MASK))
643 #define SF_SET_DEBUG_FIELD(s,v) (SF_GET (s) |= ((v) & SF_DEBUG_MASK))
644 #define SF_SET_FILE(s) (SF_GET (s) |= SF_FILE)
645 #define SF_SET_STATICS(s) (SF_GET (s) |= SF_STATICS)
646 #define SF_SET_DEFINED(s) (SF_GET (s) |= SF_DEFINED)
647 #define SF_SET_STRING(s) (SF_GET (s) |= SF_STRING)
648 #define SF_SET_LOCAL(s) (SF_GET (s) |= SF_LOCAL)
649 #define SF_CLEAR_LOCAL(s) (SF_GET (s) &= ~SF_LOCAL)
650 #define SF_SET_FUNCTION(s) (SF_GET (s) |= SF_FUNCTION)
651 #define SF_SET_PROCESS(s) (SF_GET (s) |= SF_PROCESS)
652 #define SF_SET_DEBUG(s) (SF_GET (s) |= SF_DEBUG)
653 #define SF_SET_TAGGED(s) (SF_GET (s) |= SF_TAGGED)
654 #define SF_SET_TAG(s) (SF_GET (s) |= SF_TAG)
655 #define SF_SET_GET_SEGMENT(s) (SF_GET (s) |= SF_GET_SEGMENT)
656 #define SF_SET_ADJ_LNNOPTR(s) (SF_GET (s) |= SF_ADJ_LNNOPTR)
657 #define SF_SET_I960(s,v) (SF_GET (s) |= ((v) & SF_I960_MASK)) /* used by i960 */
658 #define SF_SET_BALNAME(s) (SF_GET (s) |= SF_BALNAME) /* used by i960 */
659 #define SF_SET_CALLNAME(s) (SF_GET (s) |= SF_CALLNAME) /* used by i960 */
660 #define SF_SET_IS_SYSPROC(s) (SF_GET (s) |= SF_IS_SYSPROC) /* used by i960 */
661 #define SF_SET_SYSPROC(s,v) (SF_GET (s) |= ((v) & SF_SYSPROC)) /* used by i960 */
662
663 /* File header macro and type definition */
664
665 /*
666 * File position calculators. Beware to use them when all the
667 * appropriate fields are set in the header.
668 */
669
670 #ifdef OBJ_COFF_OMIT_OPTIONAL_HEADER
671 #define OBJ_COFF_AOUTHDRSZ (0)
672 #else
673 #define OBJ_COFF_AOUTHDRSZ (AOUTHDRSZ)
674 #endif /* OBJ_COFF_OMIT_OPTIONAL_HEADER */
675
676 #define H_GET_FILE_SIZE(h) \
677 (long)(FILHSZ + OBJ_COFF_AOUTHDRSZ + \
678 H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ + \
679 H_GET_TEXT_SIZE(h) + H_GET_DATA_SIZE(h) + \
680 H_GET_RELOCATION_SIZE(h) + H_GET_LINENO_SIZE(h) + \
681 H_GET_SYMBOL_TABLE_SIZE(h) + \
682 (h)->string_table_size)
683 #define H_GET_TEXT_FILE_OFFSET(h) \
684 (long)(FILHSZ + OBJ_COFF_AOUTHDRSZ + \
685 H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ)
686 #define H_GET_DATA_FILE_OFFSET(h) \
687 (long)(FILHSZ + OBJ_COFF_AOUTHDRSZ + \
688 H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ + \
689 H_GET_TEXT_SIZE(h))
690 #define H_GET_BSS_FILE_OFFSET(h) 0
691 #define H_GET_RELOCATION_FILE_OFFSET(h) \
692 (long)(FILHSZ + OBJ_COFF_AOUTHDRSZ + \
693 H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ + \
694 H_GET_TEXT_SIZE(h) + H_GET_DATA_SIZE(h))
695 #define H_GET_LINENO_FILE_OFFSET(h) \
696 (long)(FILHSZ + OBJ_COFF_AOUTHDRSZ + \
697 H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ + \
698 H_GET_TEXT_SIZE(h) + H_GET_DATA_SIZE(h) + \
699 H_GET_RELOCATION_SIZE(h))
700 #define H_GET_SYMBOL_TABLE_FILE_OFFSET(h) \
701 (long)(FILHSZ + OBJ_COFF_AOUTHDRSZ + \
702 H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ + \
703 H_GET_TEXT_SIZE(h) + H_GET_DATA_SIZE(h) + \
704 H_GET_RELOCATION_SIZE(h) + H_GET_LINENO_SIZE(h))
705
706 /* Accessors */
707 /* aouthdr */
708 #define H_GET_MAGIC_NUMBER(h) ((h)->aouthdr.magic)
709 #define H_GET_VERSION_STAMP(h) ((h)->aouthdr.vstamp)
710 #define H_GET_TEXT_SIZE(h) ((h)->aouthdr.tsize)
711 #define H_GET_DATA_SIZE(h) ((h)->aouthdr.dsize)
712 #define H_GET_BSS_SIZE(h) ((h)->aouthdr.bsize)
713 #define H_GET_ENTRY_POINT(h) ((h)->aouthdr.entry)
714 #define H_GET_TEXT_START(h) ((h)->aouthdr.text_start)
715 #define H_GET_DATA_START(h) ((h)->aouthdr.data_start)
716 /* filehdr */
717 #define H_GET_FILE_MAGIC_NUMBER(h) ((h)->filehdr.f_magic)
718 #define H_GET_NUMBER_OF_SECTIONS(h) ((h)->filehdr.f_nscns)
719 #define H_GET_TIME_STAMP(h) ((h)->filehdr.f_timdat)
720 #define H_GET_SYMBOL_TABLE_POINTER(h) ((h)->filehdr.f_symptr)
721 #define H_GET_SYMBOL_COUNT(h) ((h)->filehdr.f_nsyms)
722 #define H_GET_SYMBOL_TABLE_SIZE(h) (H_GET_SYMBOL_COUNT(h) * SYMESZ)
723 #define H_GET_SIZEOF_OPTIONAL_HEADER(h) ((h)->filehdr.f_opthdr)
724 #define H_GET_FLAGS(h) ((h)->filehdr.f_flags)
725 /* Extra fields to achieve bsd a.out compatibility and for convenience */
726 #define H_GET_RELOCATION_SIZE(h) ((h)->relocation_size)
727 #define H_GET_STRING_SIZE(h) ((h)->string_table_size)
728 #define H_GET_LINENO_SIZE(h) ((h)->lineno_size)
729
730 #ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER
731 #define H_GET_HEADER_SIZE(h) (sizeof(FILHDR) \
732 + sizeof(AOUTHDR)\
733 + (H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ))
734 #else /* OBJ_COFF_OMIT_OPTIONAL_HEADER */
735 #define H_GET_HEADER_SIZE(h) (sizeof(FILHDR) \
736 + (H_GET_NUMBER_OF_SECTIONS(h) * SCNHSZ))
737 #endif /* OBJ_COFF_OMIT_OPTIONAL_HEADER */
738
739 #define H_GET_TEXT_RELOCATION_SIZE(h) (text_section_header.s_nreloc * RELSZ)
740 #define H_GET_DATA_RELOCATION_SIZE(h) (data_section_header.s_nreloc * RELSZ)
741
742 /* Modifiers */
743 /* aouthdr */
744 #define H_SET_MAGIC_NUMBER(h,v) ((h)->aouthdr.magic = (v))
745 #define H_SET_VERSION_STAMP(h,v) ((h)->aouthdr.vstamp = (v))
746 #define H_SET_TEXT_SIZE(h,v) ((h)->aouthdr.tsize = (v))
747 #define H_SET_DATA_SIZE(h,v) ((h)->aouthdr.dsize = (v))
748 #define H_SET_BSS_SIZE(h,v) ((h)->aouthdr.bsize = (v))
749 #define H_SET_ENTRY_POINT(h,v) ((h)->aouthdr.entry = (v))
750 #define H_SET_TEXT_START(h,v) ((h)->aouthdr.text_start = (v))
751 #define H_SET_DATA_START(h,v) ((h)->aouthdr.data_start = (v))
752 /* filehdr */
753 #define H_SET_FILE_MAGIC_NUMBER(h,v) ((h)->filehdr.f_magic = (v))
754 #define H_SET_NUMBER_OF_SECTIONS(h,v) ((h)->filehdr.f_nscns = (v))
755 #define H_SET_TIME_STAMP(h,v) ((h)->filehdr.f_timdat = (v))
756 #define H_SET_SYMBOL_TABLE_POINTER(h,v) ((h)->filehdr.f_symptr = (v))
757 #define H_SET_SYMBOL_TABLE_SIZE(h,v) ((h)->filehdr.f_nsyms = (v))
758 #define H_SET_SIZEOF_OPTIONAL_HEADER(h,v) ((h)->filehdr.f_opthdr = (v))
759 #define H_SET_FLAGS(h,v) ((h)->filehdr.f_flags = (v))
760 /* Extra fields to achieve bsd a.out compatibility and for convinience */
761 #define H_SET_RELOCATION_SIZE(h,t,d) ((h)->relocation_size = (t)+(d))
762 #define H_SET_STRING_SIZE(h,v) ((h)->string_table_size = (v))
763 #define H_SET_LINENO_SIZE(h,v) ((h)->lineno_size = (v))
764
765 /* Segment flipping */
766
767 typedef struct
768 {
769 struct internal_aouthdr aouthdr; /* a.out header */
770 struct internal_filehdr filehdr; /* File header, not machine dep. */
771 long string_table_size; /* names + '\0' + sizeof(int) */
772 long relocation_size; /* Cumulated size of relocation
773 information for all sections in
774 bytes. */
775 long lineno_size; /* Size of the line number information
776 table in bytes */
777 } object_headers;
778
779
780
781 struct lineno_list
782 {
783 struct bfd_internal_lineno line;
784 char *frag; /* Frag to which the line number is related */
785 struct lineno_list *next; /* Forward chain pointer */
786 };
787
788
789
790
791 #define obj_segment_name(i) (segment_info[(int) (i)].scnhdr.s_name)
792
793 #define obj_add_segment(s) obj_coff_add_segment (s)
794
795 extern segT obj_coff_add_segment PARAMS ((const char *));
796
797 extern void obj_coff_section PARAMS ((int));
798
799 extern void c_dot_file_symbol PARAMS ((char *filename));
800 #define obj_app_file c_dot_file_symbol
801 extern void obj_extra_stuff PARAMS ((object_headers * headers));
802
803 extern segT s_get_segment PARAMS ((symbolS *ptr));
804
805 extern void c_section_header PARAMS ((struct internal_scnhdr * header,
806 char *name,
807 long core_address,
808 long size,
809 long data_ptr,
810 long reloc_ptr,
811 long lineno_ptr,
812 long reloc_number,
813 long lineno_number,
814 long alignment));
815
816 #ifndef tc_coff_symbol_emit_hook
817 void tc_coff_symbol_emit_hook PARAMS ((symbolS *));
818 #endif
819
820 /* sanity check */
821
822 #ifdef TC_I960
823 #ifndef C_LEAFSTAT
824 hey ! Where is the C_LEAFSTAT definition ? i960 - coff support is depending on it.
825 #endif /* no C_LEAFSTAT */
826 #endif /* TC_I960 */
827 extern struct internal_scnhdr data_section_header;
828 extern struct internal_scnhdr text_section_header;
829
830 /* Forward the segment of a forwarded symbol. */
831 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest,src) \
832 (SF_GET_GET_SEGMENT (dest) \
833 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \
834 : 0)
835
836 #ifdef TE_PE
837 #define obj_handle_link_once(t) obj_coff_pe_handle_link_once (t)
838 extern void obj_coff_pe_handle_link_once ();
839 #endif
840
841 #endif /* not BFD_ASSEMBLER */
842
843 extern const pseudo_typeS coff_pseudo_table[];
844
845 #ifndef obj_pop_insert
846 #define obj_pop_insert() pop_insert (coff_pseudo_table)
847 #endif
848
849 /* In COFF, if a symbol is defined using .def/.val SYM/.endef, it's OK
850 to redefine the symbol later on. This can happen if C symbols use
851 a prefix, and a symbol is defined both with and without the prefix,
852 as in start/_start/__start in gcc/libgcc1-test.c. */
853 #define RESOLVE_SYMBOL_REDEFINITION(sym) \
854 (SF_GET_GET_SEGMENT (sym) \
855 ? (sym->sy_frag = frag_now, \
856 S_SET_VALUE (sym, frag_now_fix ()), \
857 S_SET_SEGMENT (sym, now_seg), \
858 0) \
859 : 0)
860
861 /* Stabs in a coff file go into their own section. */
862 #define SEPARATE_STAB_SECTIONS 1
863
864 /* We need 12 bytes at the start of the section to hold some initial
865 information. */
866 extern void obj_coff_init_stab_section PARAMS ((segT));
867 #define INIT_STAB_SECTION(seg) obj_coff_init_stab_section (seg)
868
869 /* Store the number of relocations in the section aux entry. */
870 #define SET_SECTION_RELOCS(sec, relocs, n) \
871 SA_SET_SCN_NRELOC (section_symbol (sec), n)
872
873 #endif /* OBJ_FORMAT_H */