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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [bfd/] [libaout.h] - Blame information for rev 299

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1 227 jeremybenn
/* BFD back-end data structures for a.out (and similar) files.
2
   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3
   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
4
   Free Software Foundation, Inc.
5
   Written by Cygnus Support.
6
 
7
   This file is part of BFD, the Binary File Descriptor library.
8
 
9
   This program is free software; you can redistribute it and/or modify
10
   it under the terms of the GNU General Public License as published by
11
   the Free Software Foundation; either version 3 of the License, or
12
   (at your option) any later version.
13
 
14
   This program is distributed in the hope that it will be useful,
15
   but WITHOUT ANY WARRANTY; without even the implied warranty of
16
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
   GNU General Public License for more details.
18
 
19
   You should have received a copy of the GNU General Public License
20
   along with this program; if not, write to the Free Software
21
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22
   MA 02110-1301, USA.  */
23
 
24
#ifndef LIBAOUT_H
25
#define LIBAOUT_H
26
 
27
/* We try to encapsulate the differences in the various a.out file
28
   variants in a few routines, and otherwise share large masses of code.
29
   This means we only have to fix bugs in one place, most of the time.  */
30
 
31
#include "bfdlink.h"
32
 
33
/* Macros for accessing components in an aout header.  */
34
 
35
#define H_PUT_64  bfd_h_put_64
36
#define H_PUT_32  bfd_h_put_32
37
#define H_PUT_16  bfd_h_put_16
38
#define H_PUT_8   bfd_h_put_8
39
#define H_PUT_S64 bfd_h_put_signed_64
40
#define H_PUT_S32 bfd_h_put_signed_32
41
#define H_PUT_S16 bfd_h_put_signed_16
42
#define H_PUT_S8  bfd_h_put_signed_8
43
#define H_GET_64  bfd_h_get_64
44
#define H_GET_32  bfd_h_get_32
45
#define H_GET_16  bfd_h_get_16
46
#define H_GET_8   bfd_h_get_8
47
#define H_GET_S64 bfd_h_get_signed_64
48
#define H_GET_S32 bfd_h_get_signed_32
49
#define H_GET_S16 bfd_h_get_signed_16
50
#define H_GET_S8  bfd_h_get_signed_8
51
 
52
/* Parameterize the a.out code based on whether it is being built
53
   for a 32-bit architecture or a 64-bit architecture.  */
54
/* Do not "beautify" the CONCAT* macro args.  Traditional C will not
55
   remove whitespace added here, and thus will fail to concatenate
56
   the tokens.  */
57
#if ARCH_SIZE==64
58
#define GET_WORD  H_GET_64
59
#define GET_SWORD H_GET_S64
60
#define GET_MAGIC H_GET_32
61
#define PUT_WORD  H_PUT_64
62
#define PUT_MAGIC H_PUT_32
63
#ifndef NAME
64
#define NAME(x,y) CONCAT3 (x,_64_,y)
65
#endif
66
#define JNAME(x) CONCAT2 (x,_64)
67
#define BYTES_IN_WORD 8
68
#else
69
#if ARCH_SIZE==16
70
#define GET_WORD  H_GET_16
71
#define GET_SWORD H_GET_S16
72
#define GET_MAGIC H_GET_16
73
#define PUT_WORD  H_PUT_16
74
#define PUT_MAGIC H_PUT_16
75
#ifndef NAME
76
#define NAME(x,y) CONCAT3 (x,_16_,y)
77
#endif
78
#define JNAME(x) CONCAT2 (x,_16)
79
#define BYTES_IN_WORD 2
80
#else /* ARCH_SIZE == 32 */
81
#define GET_WORD  H_GET_32
82
#define GET_SWORD H_GET_S32
83
#define GET_MAGIC H_GET_32
84
#define PUT_WORD  H_PUT_32
85
#define PUT_MAGIC H_PUT_32
86
#ifndef NAME
87
#define NAME(x,y) CONCAT3 (x,_32_,y)
88
#endif
89
#define JNAME(x) CONCAT2 (x,_32)
90
#define BYTES_IN_WORD 4
91
#endif /* ARCH_SIZE==32 */
92
#endif /* ARCH_SIZE==64 */
93
 
94
/* Declare at file level, since used in parameter lists, which have
95
   weird scope.  */
96
struct external_exec;
97
struct external_nlist;
98
struct reloc_ext_external;
99
struct reloc_std_external;
100
 
101
/* a.out backend linker hash table entries.  */
102
 
103
struct aout_link_hash_entry
104
{
105
  struct bfd_link_hash_entry root;
106
  /* Whether this symbol has been written out.  */
107
  bfd_boolean written;
108
  /* Symbol index in output file.  */
109
  int indx;
110
};
111
 
112
/* a.out backend linker hash table.  */
113
 
114
struct aout_link_hash_table
115
{
116
  struct bfd_link_hash_table root;
117
};
118
 
119
/* Look up an entry in an a.out link hash table.  */
120
 
121
#define aout_link_hash_lookup(table, string, create, copy, follow) \
122
  ((struct aout_link_hash_entry *) \
123
   bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow)))
124
 
125
/* Traverse an a.out link hash table.  */
126
 
127
#define aout_link_hash_traverse(table, func, info)                      \
128
  (bfd_link_hash_traverse                                               \
129
   (&(table)->root,                                                     \
130
    (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func),    \
131
    (info)))
132
 
133
/* Get the a.out link hash table from the info structure.  This is
134
   just a cast.  */
135
 
136
#define aout_hash_table(p) ((struct aout_link_hash_table *) ((p)->hash))
137
 
138
/* Back-end information for various a.out targets.  */
139
struct aout_backend_data
140
{
141
  /* Are ZMAGIC files mapped contiguously?  If so, the text section may
142
     need more padding, if the segment size (granularity for memory access
143
     control) is larger than the page size.  */
144
  unsigned char zmagic_mapped_contiguous;
145
  /* If this flag is set, ZMAGIC/NMAGIC file headers get mapped in with the
146
     text section, which starts immediately after the file header.
147
     If not, the text section starts on the next page.  */
148
  unsigned char text_includes_header;
149
 
150
  /* If this flag is set, then if the entry address is not in the
151
     first SEGMENT_SIZE bytes of the text section, it is taken to be
152
     the address of the start of the text section.  This can be useful
153
     for kernels.  */
154
  unsigned char entry_is_text_address;
155
 
156
  /* The value to pass to N_SET_FLAGS.  */
157
  unsigned char exec_hdr_flags;
158
 
159
  /* If the text section VMA isn't specified, and we need an absolute
160
     address, use this as the default.  If we're producing a relocatable
161
     file, zero is always used.  */
162
  /* ?? Perhaps a callback would be a better choice?  Will this do anything
163
     reasonable for a format that handles multiple CPUs with different
164
     load addresses for each?  */
165
  bfd_vma default_text_vma;
166
 
167
  /* Callback for setting the page and segment sizes, if they can't be
168
     trivially determined from the architecture.  */
169
  bfd_boolean (*set_sizes) (bfd *);
170
 
171
  /* zmagic files only. For go32, the length of the exec header contributes
172
     to the size of the text section in the file for alignment purposes but
173
     does *not* get counted in the length of the text section. */
174
  unsigned char exec_header_not_counted;
175
 
176
  /* Callback from the add symbols phase of the linker code to handle
177
     a dynamic object.  */
178
  bfd_boolean (*add_dynamic_symbols)
179
    (bfd *, struct bfd_link_info *, struct external_nlist **,
180
     bfd_size_type *, char **);
181
 
182
  /* Callback from the add symbols phase of the linker code to handle
183
     adding a single symbol to the global linker hash table.  */
184
  bfd_boolean (*add_one_symbol)
185
    (struct bfd_link_info *, bfd *, const char *, flagword,
186
     asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
187
     struct bfd_link_hash_entry **);
188
 
189
  /* Called to handle linking a dynamic object.  */
190
  bfd_boolean (*link_dynamic_object)
191
    (struct bfd_link_info *, bfd *);
192
 
193
  /* Called for each global symbol being written out by the linker.
194
     This should write out the dynamic symbol information.  */
195
  bfd_boolean (*write_dynamic_symbol)
196
    (bfd *, struct bfd_link_info *, struct aout_link_hash_entry *);
197
 
198
  /* If this callback is not NULL, the linker calls it for each reloc.
199
     RELOC is a pointer to the unswapped reloc.  If *SKIP is set to
200
     TRUE, the reloc will be skipped.  *RELOCATION may be changed to
201
     change the effects of the relocation.  */
202
  bfd_boolean (*check_dynamic_reloc)
203
    (struct bfd_link_info *info, bfd *input_bfd,
204
     asection *input_section, struct aout_link_hash_entry *h,
205
     void * reloc, bfd_byte *contents, bfd_boolean *skip,
206
     bfd_vma *relocation);
207
 
208
  /* Called at the end of a link to finish up any dynamic linking
209
     information.  */
210
  bfd_boolean (*finish_dynamic_link) (bfd *, struct bfd_link_info *);
211
};
212
#define aout_backend_info(abfd) \
213
        ((const struct aout_backend_data *)((abfd)->xvec->backend_data))
214
 
215
/* This is the layout in memory of a "struct exec" while we process it.
216
   All 'lengths' are given as a number of bytes.
217
   All 'alignments' are for relinkable files only;  an alignment of
218
        'n' indicates the corresponding segment must begin at an
219
        address that is a multiple of (2**n).  */
220
 
221
struct internal_exec
222
{
223
  long a_info;                  /* Magic number and flags, packed.  */
224
  bfd_vma a_text;               /* Length of text, in bytes.  */
225
  bfd_vma a_data;               /* Length of data, in bytes.  */
226
  bfd_vma a_bss;                /* Length of uninitialized data area in mem.  */
227
  bfd_vma a_syms;               /* Length of symbol table data in file.  */
228
  bfd_vma a_entry;              /* Start address.  */
229
  bfd_vma a_trsize;             /* Length of text's relocation info, in bytes.  */
230
  bfd_vma a_drsize;             /* Length of data's relocation info, in bytes.  */
231
  /* Added for i960 */
232
  bfd_vma a_tload;              /* Text runtime load address.  */
233
  bfd_vma a_dload;              /* Data runtime load address.  */
234
  unsigned char a_talign;       /* Alignment of text segment.  */
235
  unsigned char a_dalign;       /* Alignment of data segment.  */
236
  unsigned char a_balign;       /* Alignment of bss segment.  */
237
  char a_relaxable;             /* Enough info for linker relax.  */
238
};
239
 
240
/* Magic number is written
241
   < MSB          >
242
   3130292827262524232221201918171615141312111009080706050403020100
243
   < FLAGS        >< MACHINE TYPE ><  MAGIC NUMBER                >  */
244
 
245
/* Magic number for NetBSD is
246
   <MSB           >
247
   3130292827262524232221201918171615141312111009080706050403020100
248
   < FLAGS    >< MACHINE TYPE     ><  MAGIC NUMBER                >  */
249
 
250
enum machine_type
251
{
252
  M_UNKNOWN = 0,
253
  M_68010 = 1,
254
  M_68020 = 2,
255
  M_SPARC = 3,
256
  /* Skip a bunch so we don't run into any of SUN's numbers.  */
257
  /* Make these up for the ns32k.  */
258
  M_NS32032 = (64),       /* NS32032 running ?  */
259
  M_NS32532 = (64 + 5),   /* NS32532 running mach.  */
260
  M_386 = 100,
261
  M_29K = 101,            /* AMD 29000.  */
262
  M_386_DYNIX = 102,      /* Sequent running dynix.  */
263
  M_ARM = 103,            /* Advanced Risc Machines ARM.  */
264
  M_SPARCLET = 131,       /* SPARClet = M_SPARC + 128.  */
265
  M_386_NETBSD = 134,     /* NetBSD/i386 binary.  */
266
  M_68K_NETBSD = 135,     /* NetBSD/m68k binary.  */
267
  M_68K4K_NETBSD = 136,   /* NetBSD/m68k4k binary.  */
268
  M_532_NETBSD = 137,     /* NetBSD/ns32k binary.  */
269
  M_SPARC_NETBSD = 138,   /* NetBSD/sparc binary.  */
270
  M_PMAX_NETBSD = 139,    /* NetBSD/pmax (MIPS little-endian) binary.  */
271
  M_VAX_NETBSD = 140,     /* NetBSD/vax binary.  */
272
  M_ALPHA_NETBSD = 141,   /* NetBSD/alpha binary.  */
273
  M_ARM6_NETBSD = 143,    /* NetBSD/arm32 binary.  */
274
  M_SPARCLET_1 = 147,     /* 0x93, reserved.  */
275
  M_POWERPC_NETBSD = 149, /* NetBSD/powerpc (big-endian) binary.  */
276
  M_VAX4K_NETBSD = 150,   /* NetBSD/vax 4K pages binary.  */
277
  M_MIPS1 = 151,          /* MIPS R2000/R3000 binary.  */
278
  M_MIPS2 = 152,          /* MIPS R4000/R6000 binary.  */
279
  M_88K_OPENBSD = 153,    /* OpenBSD/m88k binary.  */
280
  M_HPPA_OPENBSD = 154,   /* OpenBSD/hppa binary.  */
281
  M_SPARC64_NETBSD = 156, /* NetBSD/sparc64 binary.  */
282
  M_X86_64_NETBSD = 157,  /* NetBSD/amd64 binary.  */
283
  M_SPARCLET_2 = 163,     /* 0xa3, reserved.  */
284
  M_SPARCLET_3 = 179,     /* 0xb3, reserved.  */
285
  M_SPARCLET_4 = 195,     /* 0xc3, reserved.  */
286
  M_HP200 = 200,          /* HP 200 (68010) BSD binary.  */
287
  M_HP300 = (300 % 256),  /* HP 300 (68020+68881) BSD binary.  */
288
  M_HPUX = (0x20c % 256), /* HP 200/300 HPUX binary.  */
289
  M_SPARCLET_5 = 211,     /* 0xd3, reserved.  */
290
  M_SPARCLET_6 = 227,     /* 0xe3, reserved.  */
291
/*M_SPARCLET_7 = 243     / * 0xf3, reserved.  */
292
  M_SPARCLITE_LE = 243,
293
  M_CRIS = 255            /* Axis CRIS binary.  */
294
};
295
 
296
#define N_DYNAMIC(exec) ((exec).a_info & 0x80000000)
297
 
298
#ifndef N_MAGIC
299
# define N_MAGIC(exec) ((exec).a_info & 0xffff)
300
#endif
301
 
302
#ifndef N_MACHTYPE
303
# define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
304
#endif
305
 
306
#ifndef N_FLAGS
307
# define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
308
#endif
309
 
310
#ifndef N_SET_INFO
311
# define N_SET_INFO(exec, magic, type, flags) \
312
((exec).a_info = ((magic) & 0xffff) \
313
 | (((int)(type) & 0xff) << 16) \
314
 | (((flags) & 0xff) << 24))
315
#endif
316
 
317
#ifndef N_SET_DYNAMIC
318
# define N_SET_DYNAMIC(exec, dynamic) \
319
((exec).a_info = (dynamic) ? (long) ((exec).a_info | 0x80000000) : \
320
((exec).a_info & 0x7fffffff))
321
#endif
322
 
323
#ifndef N_SET_MAGIC
324
# define N_SET_MAGIC(exec, magic) \
325
((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
326
#endif
327
 
328
#ifndef N_SET_MACHTYPE
329
# define N_SET_MACHTYPE(exec, machtype) \
330
((exec).a_info = \
331
 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
332
#endif
333
 
334
#ifndef N_SET_FLAGS
335
# define N_SET_FLAGS(exec, flags) \
336
((exec).a_info = \
337
 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
338
#endif
339
 
340
typedef struct aout_symbol
341
{
342
  asymbol symbol;
343
  short desc;
344
  char other;
345
  unsigned char type;
346
} aout_symbol_type;
347
 
348
/* The `tdata' struct for all a.out-like object file formats.
349
   Various things depend on this struct being around any time an a.out
350
   file is being handled.  An example is dbxread.c in GDB.  */
351
 
352
enum aout_subformat {
353
  default_format = 0,
354
  /* Used on HP 9000/300 running HP/UX.  See hp300hpux.c.  */
355
  gnu_encap_format,
356
  /* Used on Linux, 386BSD, etc.  See include/aout/aout64.h.  */
357
  q_magic_format
358
};
359
 
360
enum aout_magic {
361
  undecided_magic = 0,
362
  z_magic,
363
  o_magic,
364
  n_magic
365
};
366
 
367
struct aoutdata
368
{
369
  struct internal_exec *hdr;            /* Exec file header.  */
370
  aout_symbol_type *symbols;            /* Symtab for input bfd.  */
371
 
372
  /* For ease, we do this.  */
373
  asection *textsec;
374
  asection *datasec;
375
  asection *bsssec;
376
 
377
  /* We remember these offsets so that after check_file_format, we have
378
     no dependencies on the particular format of the exec_hdr.  */
379
  file_ptr sym_filepos;
380
  file_ptr str_filepos;
381
 
382
  /* Size of a relocation entry in external form.  */
383
  unsigned reloc_entry_size;
384
 
385
  /* Size of a symbol table entry in external form.  */
386
  unsigned symbol_entry_size;
387
 
388
  /* Page size - needed for alignment of demand paged files.  */
389
  unsigned long page_size;
390
 
391
  /* Segment size - needed for alignment of demand paged files.  */
392
  unsigned long segment_size;
393
 
394
  /* Zmagic disk block size - need to align the start of the text
395
     section in ZMAGIC binaries.  Normally the same as page_size.  */
396
  unsigned long zmagic_disk_block_size;
397
 
398
  unsigned exec_bytes_size;
399
  unsigned vma_adjusted : 1;
400
 
401
  /* Used when a bfd supports several highly similar formats.  */
402
  enum aout_subformat subformat;
403
 
404
  enum aout_magic magic;
405
 
406
  /* A buffer for find_nearest_line.  */
407
  char *line_buf;
408
 
409
  /* The external symbol information.  */
410
  struct external_nlist *external_syms;
411
  bfd_size_type external_sym_count;
412
  bfd_window sym_window;
413
  char *external_strings;
414
  bfd_size_type external_string_size;
415
  bfd_window string_window;
416
  struct aout_link_hash_entry **sym_hashes;
417
 
418
  /* A pointer for shared library information.  */
419
  void * dynamic_info;
420
 
421
  /* A mapping from local symbols to offsets into the global offset
422
     table, used when linking on SunOS.  This is indexed by the symbol
423
     index.  */
424
  bfd_vma *local_got_offsets;
425
};
426
 
427
struct  aout_data_struct
428
{
429
  struct aoutdata a;
430
  struct internal_exec e;
431
};
432
 
433
#define adata(bfd)                         ((bfd)->tdata.aout_data->a)
434
#define exec_hdr(bfd)                      (adata (bfd).hdr)
435
#define obj_aout_symbols(bfd)              (adata (bfd).symbols)
436
#define obj_textsec(bfd)                   (adata (bfd).textsec)
437
#define obj_datasec(bfd)                   (adata (bfd).datasec)
438
#define obj_bsssec(bfd)                    (adata (bfd).bsssec)
439
#define obj_sym_filepos(bfd)               (adata (bfd).sym_filepos)
440
#define obj_str_filepos(bfd)               (adata (bfd).str_filepos)
441
#define obj_reloc_entry_size(bfd)          (adata (bfd).reloc_entry_size)
442
#define obj_symbol_entry_size(bfd)         (adata (bfd).symbol_entry_size)
443
#define obj_aout_subformat(bfd)            (adata (bfd).subformat)
444
#define obj_aout_external_syms(bfd)        (adata (bfd).external_syms)
445
#define obj_aout_external_sym_count(bfd)   (adata (bfd).external_sym_count)
446
#define obj_aout_sym_window(bfd)           (adata (bfd).sym_window)
447
#define obj_aout_external_strings(bfd)     (adata (bfd).external_strings)
448
#define obj_aout_external_string_size(bfd) (adata (bfd).external_string_size)
449
#define obj_aout_string_window(bfd)        (adata (bfd).string_window)
450
#define obj_aout_sym_hashes(bfd)           (adata (bfd).sym_hashes)
451
#define obj_aout_dynamic_info(bfd)         (adata (bfd).dynamic_info)
452
 
453
/* We take the address of the first element of an asymbol to ensure that the
454
   macro is only ever applied to an asymbol.  */
455
#define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))
456
 
457
/* Information we keep for each a.out section.  This is currently only
458
   used by the a.out backend linker.  */
459
 
460
struct aout_section_data_struct
461
{
462
  /* The unswapped relocation entries for this section.  */
463
  void * relocs;
464
};
465
 
466
#define aout_section_data(s) \
467
  ((struct aout_section_data_struct *) (s)->used_by_bfd)
468
 
469
#define set_aout_section_data(s,v) \
470
  ((s)->used_by_bfd = (void *)&(v)->relocs)
471
 
472
/* Prototype declarations for functions defined in aoutx.h.  */
473
 
474
extern bfd_boolean NAME (aout, squirt_out_relocs)
475
  (bfd *, asection *);
476
 
477
extern bfd_boolean NAME (aout, make_sections)
478
  (bfd *);
479
 
480
extern const bfd_target * NAME (aout, some_aout_object_p)
481
  (bfd *, struct internal_exec *, const bfd_target *(*) (bfd *));
482
 
483
extern bfd_boolean NAME (aout, mkobject)
484
  (bfd *);
485
 
486
extern enum machine_type NAME (aout, machine_type)
487
  (enum bfd_architecture, unsigned long, bfd_boolean *);
488
 
489
extern bfd_boolean NAME (aout, set_arch_mach)
490
  (bfd *, enum bfd_architecture, unsigned long);
491
 
492
extern bfd_boolean NAME (aout, new_section_hook)
493
  (bfd *, asection *);
494
 
495
extern bfd_boolean NAME (aout, set_section_contents)
496
  (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type);
497
 
498
extern asymbol * NAME (aout, make_empty_symbol)
499
  (bfd *);
500
 
501
extern bfd_boolean NAME (aout, translate_symbol_table)
502
  (bfd *, aout_symbol_type *, struct external_nlist *, bfd_size_type,
503
           char *, bfd_size_type, bfd_boolean);
504
 
505
extern bfd_boolean NAME (aout, slurp_symbol_table)
506
  (bfd *);
507
 
508
extern bfd_boolean NAME (aout, write_syms)
509
  (bfd *);
510
 
511
extern void NAME (aout, reclaim_symbol_table)
512
  (bfd *);
513
 
514
extern long NAME (aout, get_symtab_upper_bound)
515
  (bfd *);
516
 
517
extern long NAME (aout, canonicalize_symtab)
518
  (bfd *, asymbol **);
519
 
520
extern void NAME (aout, swap_ext_reloc_in)
521
  (bfd *, struct reloc_ext_external *, arelent *, asymbol **,
522
   bfd_size_type);
523
 
524
extern void NAME (aout, swap_std_reloc_in)
525
  (bfd *, struct reloc_std_external *, arelent *, asymbol **,
526
   bfd_size_type);
527
 
528
extern reloc_howto_type * NAME (aout, reloc_type_lookup)
529
  (bfd *, bfd_reloc_code_real_type);
530
 
531
extern reloc_howto_type * NAME (aout, reloc_name_lookup)
532
  (bfd *, const char *);
533
 
534
extern bfd_boolean NAME (aout, slurp_reloc_table)
535
  (bfd *, sec_ptr, asymbol **);
536
 
537
extern long NAME (aout, canonicalize_reloc)
538
  (bfd *, sec_ptr, arelent **, asymbol **);
539
 
540
extern long NAME (aout, get_reloc_upper_bound)
541
  (bfd *, sec_ptr);
542
 
543
extern void NAME (aout, reclaim_reloc)
544
  (bfd *, sec_ptr);
545
 
546
extern alent * NAME (aout, get_lineno)
547
  (bfd *, asymbol *);
548
 
549
extern void NAME (aout, print_symbol)
550
  (bfd *, void *, asymbol *, bfd_print_symbol_type);
551
 
552
extern void NAME (aout, get_symbol_info)
553
  (bfd *, asymbol *, symbol_info *);
554
 
555
extern bfd_boolean NAME (aout, find_nearest_line)
556
  (bfd *, asection *, asymbol **, bfd_vma, const char **,
557
   const char **, unsigned int *);
558
 
559
extern long NAME (aout, read_minisymbols)
560
  (bfd *, bfd_boolean, void * *, unsigned int *);
561
 
562
extern asymbol * NAME (aout, minisymbol_to_symbol)
563
  (bfd *, bfd_boolean, const void *, asymbol *);
564
 
565
extern int NAME (aout, sizeof_headers)
566
  (bfd *, struct bfd_link_info *);
567
 
568
extern bfd_boolean NAME (aout, adjust_sizes_and_vmas)
569
  (bfd *, bfd_size_type *, file_ptr *);
570
 
571
extern void NAME (aout, swap_exec_header_in)
572
  (bfd *, struct external_exec *, struct internal_exec *);
573
 
574
extern void NAME (aout, swap_exec_header_out)
575
  (bfd *, struct internal_exec *, struct external_exec *);
576
 
577
extern struct bfd_hash_entry * NAME (aout, link_hash_newfunc)
578
  (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
579
 
580
extern bfd_boolean NAME (aout, link_hash_table_init)
581
  (struct aout_link_hash_table *, bfd *,
582
   struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
583
                               struct bfd_hash_table *,
584
                               const char *),
585
   unsigned int);
586
 
587
extern struct bfd_link_hash_table * NAME (aout, link_hash_table_create)
588
  (bfd *);
589
 
590
extern bfd_boolean NAME (aout, link_add_symbols)
591
  (bfd *, struct bfd_link_info *);
592
 
593
extern bfd_boolean NAME (aout, final_link)
594
  (bfd *, struct bfd_link_info *,
595
   void (*) (bfd *, file_ptr *, file_ptr *, file_ptr *));
596
 
597
extern bfd_boolean NAME (aout, bfd_free_cached_info)
598
  (bfd *);
599
 
600
#define aout_32_find_inliner_info       _bfd_nosymbols_find_inliner_info
601
#if 0   /* Are these needed? */
602
#define aout_16_find_inliner_info       _bfd_nosymbols_find_inliner_info
603
#define aout_64_find_inliner_info       _bfd_nosymbols_find_inliner_info
604
#endif
605
 
606
/* A.out uses the generic versions of these routines...  */
607
 
608
#define aout_16_get_section_contents    _bfd_generic_get_section_contents
609
 
610
#define aout_32_get_section_contents    _bfd_generic_get_section_contents
611
 
612
#define aout_64_get_section_contents    _bfd_generic_get_section_contents
613
#ifndef NO_WRITE_HEADER_KLUDGE
614
#define NO_WRITE_HEADER_KLUDGE 0
615
#endif
616
 
617
#ifndef aout_32_bfd_is_local_label_name
618
#define aout_32_bfd_is_local_label_name bfd_generic_is_local_label_name
619
#endif
620
 
621
#ifndef aout_32_bfd_is_target_special_symbol
622
#define aout_32_bfd_is_target_special_symbol \
623
  ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
624
#endif
625
 
626
#ifndef WRITE_HEADERS
627
#define WRITE_HEADERS(abfd, execp)                                            \
628
      {                                                                       \
629
        bfd_size_type text_size; /* Dummy vars.  */                           \
630
        file_ptr text_end;                                                    \
631
                                                                              \
632
        if (adata(abfd).magic == undecided_magic)                             \
633
          NAME (aout, adjust_sizes_and_vmas) (abfd, & text_size, & text_end); \
634
                                                                              \
635
        execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE;        \
636
        execp->a_entry = bfd_get_start_address (abfd);                        \
637
                                                                              \
638
        execp->a_trsize = ((obj_textsec (abfd)->reloc_count) *                \
639
                           obj_reloc_entry_size (abfd));                      \
640
        execp->a_drsize = ((obj_datasec (abfd)->reloc_count) *                \
641
                           obj_reloc_entry_size (abfd));                      \
642
        NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes);        \
643
                                                                              \
644
        if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0                \
645
            || bfd_bwrite (& exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE,     \
646
                          abfd) != EXEC_BYTES_SIZE)                           \
647
          return FALSE;                                                       \
648
        /* Now write out reloc info, followed by syms and strings.  */        \
649
                                                                              \
650
        if (bfd_get_outsymbols (abfd) != NULL                                 \
651
            && bfd_get_symcount (abfd) != 0)                                   \
652
          {                                                                   \
653
            if (bfd_seek (abfd, (file_ptr) (N_SYMOFF(*execp)), SEEK_SET) != 0)\
654
              return FALSE;                                                   \
655
                                                                              \
656
            if (! NAME (aout, write_syms) (abfd))                             \
657
              return FALSE;                                                   \
658
          }                                                                   \
659
                                                                              \
660
        if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (*execp)), SEEK_SET) != 0)  \
661
          return FALSE;                                                       \
662
        if (!NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd)))       \
663
          return FALSE;                                                       \
664
                                                                              \
665
        if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp)), SEEK_SET) != 0)  \
666
          return FALSE;                                                       \
667
        if (!NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd)))       \
668
          return FALSE;                                                       \
669
      }
670
#endif
671
 
672
/* Test if a read-only section can be merged with .text.  This is
673
   possible if:
674
 
675
   1. Section has file contents and is read-only.
676
   2. The VMA of the section is after the end of .text and before
677
      the start of .data.
678
   3. The image is demand-pageable (otherwise, a_text in the header
679
      will not reflect the gap between .text and .data).  */
680
 
681
#define aout_section_merge_with_text_p(abfd, sec)                       \
682
  (((sec)->flags & (SEC_HAS_CONTENTS | SEC_READONLY)) ==                \
683
      (SEC_HAS_CONTENTS | SEC_READONLY)                                 \
684
   && obj_textsec (abfd) != NULL                                        \
685
   && obj_datasec (abfd) != NULL                                        \
686
   && (sec)->vma >= (obj_textsec (abfd)->vma +                          \
687
                     obj_textsec (abfd)->size)                          \
688
   && ((sec)->vma + (sec)->size) <= obj_datasec (abfd)->vma             \
689
   && ((abfd)->flags & D_PAGED) != 0)
690
 
691
#endif /* ! defined (LIBAOUT_H) */

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