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[/] [openrisc/] [trunk/] [gnu-src/] [binutils-2.18.50/] [bfd/] [libaout.h] - Blame information for rev 156

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/* 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
struct aoutdata
353
{
354
  struct internal_exec *hdr;            /* Exec file header.  */
355
  aout_symbol_type *symbols;            /* Symtab for input bfd.  */
356
 
357
  /* For ease, we do this.  */
358
  asection *textsec;
359
  asection *datasec;
360
  asection *bsssec;
361
 
362
  /* We remember these offsets so that after check_file_format, we have
363
     no dependencies on the particular format of the exec_hdr.  */
364
  file_ptr sym_filepos;
365
  file_ptr str_filepos;
366
 
367
  /* Size of a relocation entry in external form.  */
368
  unsigned reloc_entry_size;
369
 
370
  /* Size of a symbol table entry in external form.  */
371
  unsigned symbol_entry_size;
372
 
373
  /* Page size - needed for alignment of demand paged files.  */
374
  unsigned long page_size;
375
 
376
  /* Segment size - needed for alignment of demand paged files.  */
377
  unsigned long segment_size;
378
 
379
  /* Zmagic disk block size - need to align the start of the text
380
     section in ZMAGIC binaries.  Normally the same as page_size.  */
381
  unsigned long zmagic_disk_block_size;
382
 
383
  unsigned exec_bytes_size;
384
  unsigned vma_adjusted : 1;
385
 
386
  /* Used when a bfd supports several highly similar formats.  */
387
  enum
388
    {
389
      default_format = 0,
390
      /* Used on HP 9000/300 running HP/UX.  See hp300hpux.c.  */
391
      gnu_encap_format,
392
      /* Used on Linux, 386BSD, etc.  See include/aout/aout64.h.  */
393
      q_magic_format
394
    } subformat;
395
 
396
  enum
397
    {
398
      undecided_magic = 0,
399
      z_magic,
400
      o_magic,
401
      n_magic
402
    } magic;
403
 
404
  /* A buffer for find_nearest_line.  */
405
  char *line_buf;
406
 
407
  /* The external symbol information.  */
408
  struct external_nlist *external_syms;
409
  bfd_size_type external_sym_count;
410
  bfd_window sym_window;
411
  char *external_strings;
412
  bfd_size_type external_string_size;
413
  bfd_window string_window;
414
  struct aout_link_hash_entry **sym_hashes;
415
 
416
  /* A pointer for shared library information.  */
417
  void * dynamic_info;
418
 
419
  /* A mapping from local symbols to offsets into the global offset
420
     table, used when linking on SunOS.  This is indexed by the symbol
421
     index.  */
422
  bfd_vma *local_got_offsets;
423
};
424
 
425
struct  aout_data_struct
426
{
427
  struct aoutdata a;
428
  struct internal_exec e;
429
};
430
 
431
#define adata(bfd)                         ((bfd)->tdata.aout_data->a)
432
#define exec_hdr(bfd)                      (adata (bfd).hdr)
433
#define obj_aout_symbols(bfd)              (adata (bfd).symbols)
434
#define obj_textsec(bfd)                   (adata (bfd).textsec)
435
#define obj_datasec(bfd)                   (adata (bfd).datasec)
436
#define obj_bsssec(bfd)                    (adata (bfd).bsssec)
437
#define obj_sym_filepos(bfd)               (adata (bfd).sym_filepos)
438
#define obj_str_filepos(bfd)               (adata (bfd).str_filepos)
439
#define obj_reloc_entry_size(bfd)          (adata (bfd).reloc_entry_size)
440
#define obj_symbol_entry_size(bfd)         (adata (bfd).symbol_entry_size)
441
#define obj_aout_subformat(bfd)            (adata (bfd).subformat)
442
#define obj_aout_external_syms(bfd)        (adata (bfd).external_syms)
443
#define obj_aout_external_sym_count(bfd)   (adata (bfd).external_sym_count)
444
#define obj_aout_sym_window(bfd)           (adata (bfd).sym_window)
445
#define obj_aout_external_strings(bfd)     (adata (bfd).external_strings)
446
#define obj_aout_external_string_size(bfd) (adata (bfd).external_string_size)
447
#define obj_aout_string_window(bfd)        (adata (bfd).string_window)
448
#define obj_aout_sym_hashes(bfd)           (adata (bfd).sym_hashes)
449
#define obj_aout_dynamic_info(bfd)         (adata (bfd).dynamic_info)
450
 
451
/* We take the address of the first element of an asymbol to ensure that the
452
   macro is only ever applied to an asymbol.  */
453
#define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))
454
 
455
/* Information we keep for each a.out section.  This is currently only
456
   used by the a.out backend linker.  */
457
 
458
struct aout_section_data_struct
459
{
460
  /* The unswapped relocation entries for this section.  */
461
  void * relocs;
462
};
463
 
464
#define aout_section_data(s) \
465
  ((struct aout_section_data_struct *) (s)->used_by_bfd)
466
 
467
#define set_aout_section_data(s,v) \
468
  ((s)->used_by_bfd = (void *)&(v)->relocs)
469
 
470
/* Prototype declarations for functions defined in aoutx.h.  */
471
 
472
extern bfd_boolean NAME (aout, squirt_out_relocs)
473
  (bfd *, asection *);
474
 
475
extern bfd_boolean NAME (aout, make_sections)
476
  (bfd *);
477
 
478
extern const bfd_target * NAME (aout, some_aout_object_p)
479
  (bfd *, struct internal_exec *, const bfd_target *(*) (bfd *));
480
 
481
extern bfd_boolean NAME (aout, mkobject)
482
  (bfd *);
483
 
484
extern enum machine_type NAME (aout, machine_type)
485
  (enum bfd_architecture, unsigned long, bfd_boolean *);
486
 
487
extern bfd_boolean NAME (aout, set_arch_mach)
488
  (bfd *, enum bfd_architecture, unsigned long);
489
 
490
extern bfd_boolean NAME (aout, new_section_hook)
491
  (bfd *, asection *);
492
 
493
extern bfd_boolean NAME (aout, set_section_contents)
494
  (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type);
495
 
496
extern asymbol * NAME (aout, make_empty_symbol)
497
  (bfd *);
498
 
499
extern bfd_boolean NAME (aout, translate_symbol_table)
500
  (bfd *, aout_symbol_type *, struct external_nlist *, bfd_size_type,
501
           char *, bfd_size_type, bfd_boolean);
502
 
503
extern bfd_boolean NAME (aout, slurp_symbol_table)
504
  (bfd *);
505
 
506
extern bfd_boolean NAME (aout, write_syms)
507
  (bfd *);
508
 
509
extern void NAME (aout, reclaim_symbol_table)
510
  (bfd *);
511
 
512
extern long NAME (aout, get_symtab_upper_bound)
513
  (bfd *);
514
 
515
extern long NAME (aout, canonicalize_symtab)
516
  (bfd *, asymbol **);
517
 
518
extern void NAME (aout, swap_ext_reloc_in)
519
  (bfd *, struct reloc_ext_external *, arelent *, asymbol **,
520
   bfd_size_type);
521
 
522
extern void NAME (aout, swap_std_reloc_in)
523
  (bfd *, struct reloc_std_external *, arelent *, asymbol **,
524
   bfd_size_type);
525
 
526
extern reloc_howto_type * NAME (aout, reloc_type_lookup)
527
  (bfd *, bfd_reloc_code_real_type);
528
 
529
extern reloc_howto_type * NAME (aout, reloc_name_lookup)
530
  (bfd *, const char *);
531
 
532
extern bfd_boolean NAME (aout, slurp_reloc_table)
533
  (bfd *, sec_ptr, asymbol **);
534
 
535
extern long NAME (aout, canonicalize_reloc)
536
  (bfd *, sec_ptr, arelent **, asymbol **);
537
 
538
extern long NAME (aout, get_reloc_upper_bound)
539
  (bfd *, sec_ptr);
540
 
541
extern void NAME (aout, reclaim_reloc)
542
  (bfd *, sec_ptr);
543
 
544
extern alent * NAME (aout, get_lineno)
545
  (bfd *, asymbol *);
546
 
547
extern void NAME (aout, print_symbol)
548
  (bfd *, void *, asymbol *, bfd_print_symbol_type);
549
 
550
extern void NAME (aout, get_symbol_info)
551
  (bfd *, asymbol *, symbol_info *);
552
 
553
extern bfd_boolean NAME (aout, find_nearest_line)
554
  (bfd *, asection *, asymbol **, bfd_vma, const char **,
555
   const char **, unsigned int *);
556
 
557
extern long NAME (aout, read_minisymbols)
558
  (bfd *, bfd_boolean, void * *, unsigned int *);
559
 
560
extern asymbol * NAME (aout, minisymbol_to_symbol)
561
  (bfd *, bfd_boolean, const void *, asymbol *);
562
 
563
extern int NAME (aout, sizeof_headers)
564
  (bfd *, struct bfd_link_info *);
565
 
566
extern bfd_boolean NAME (aout, adjust_sizes_and_vmas)
567
  (bfd *, bfd_size_type *, file_ptr *);
568
 
569
extern void NAME (aout, swap_exec_header_in)
570
  (bfd *, struct external_exec *, struct internal_exec *);
571
 
572
extern void NAME (aout, swap_exec_header_out)
573
  (bfd *, struct internal_exec *, struct external_exec *);
574
 
575
extern struct bfd_hash_entry * NAME (aout, link_hash_newfunc)
576
  (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
577
 
578
extern bfd_boolean NAME (aout, link_hash_table_init)
579
  (struct aout_link_hash_table *, bfd *,
580
   struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
581
                               struct bfd_hash_table *,
582
                               const char *),
583
   unsigned int);
584
 
585
extern struct bfd_link_hash_table * NAME (aout, link_hash_table_create)
586
  (bfd *);
587
 
588
extern bfd_boolean NAME (aout, link_add_symbols)
589
  (bfd *, struct bfd_link_info *);
590
 
591
extern bfd_boolean NAME (aout, final_link)
592
  (bfd *, struct bfd_link_info *,
593
   void (*) (bfd *, file_ptr *, file_ptr *, file_ptr *));
594
 
595
extern bfd_boolean NAME (aout, bfd_free_cached_info)
596
  (bfd *);
597
 
598
#define aout_32_find_inliner_info       _bfd_nosymbols_find_inliner_info
599
#if 0   /* Are these needed? */
600
#define aout_16_find_inliner_info       _bfd_nosymbols_find_inliner_info
601
#define aout_64_find_inliner_info       _bfd_nosymbols_find_inliner_info
602
#endif
603
 
604
/* A.out uses the generic versions of these routines...  */
605
 
606
#define aout_16_get_section_contents    _bfd_generic_get_section_contents
607
 
608
#define aout_32_get_section_contents    _bfd_generic_get_section_contents
609
 
610
#define aout_64_get_section_contents    _bfd_generic_get_section_contents
611
#ifndef NO_WRITE_HEADER_KLUDGE
612
#define NO_WRITE_HEADER_KLUDGE 0
613
#endif
614
 
615
#ifndef aout_32_bfd_is_local_label_name
616
#define aout_32_bfd_is_local_label_name bfd_generic_is_local_label_name
617
#endif
618
 
619
#ifndef aout_32_bfd_is_target_special_symbol
620
#define aout_32_bfd_is_target_special_symbol \
621
  ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
622
#endif
623
 
624
#ifndef WRITE_HEADERS
625
#define WRITE_HEADERS(abfd, execp)                                            \
626
      {                                                                       \
627
        bfd_size_type text_size; /* Dummy vars.  */                           \
628
        file_ptr text_end;                                                    \
629
                                                                              \
630
        if (adata(abfd).magic == undecided_magic)                             \
631
          NAME (aout, adjust_sizes_and_vmas) (abfd, & text_size, & text_end); \
632
                                                                              \
633
        execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE;        \
634
        execp->a_entry = bfd_get_start_address (abfd);                        \
635
                                                                              \
636
        execp->a_trsize = ((obj_textsec (abfd)->reloc_count) *                \
637
                           obj_reloc_entry_size (abfd));                      \
638
        execp->a_drsize = ((obj_datasec (abfd)->reloc_count) *                \
639
                           obj_reloc_entry_size (abfd));                      \
640
        NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes);        \
641
                                                                              \
642
        if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0                \
643
            || bfd_bwrite (& exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE,     \
644
                          abfd) != EXEC_BYTES_SIZE)                           \
645
          return FALSE;                                                       \
646
        /* Now write out reloc info, followed by syms and strings.  */        \
647
                                                                              \
648
        if (bfd_get_outsymbols (abfd) != NULL                                 \
649
            && bfd_get_symcount (abfd) != 0)                                   \
650
          {                                                                   \
651
            if (bfd_seek (abfd, (file_ptr) (N_SYMOFF(*execp)), SEEK_SET) != 0)\
652
              return FALSE;                                                   \
653
                                                                              \
654
            if (! NAME (aout, write_syms) (abfd))                             \
655
              return FALSE;                                                   \
656
          }                                                                   \
657
                                                                              \
658
        if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (*execp)), SEEK_SET) != 0)  \
659
          return FALSE;                                                       \
660
        if (!NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd)))       \
661
          return FALSE;                                                       \
662
                                                                              \
663
        if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp)), SEEK_SET) != 0)  \
664
          return FALSE;                                                       \
665
        if (!NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd)))       \
666
          return FALSE;                                                       \
667
      }
668
#endif
669
 
670
/* Test if a read-only section can be merged with .text.  This is
671
   possible if:
672
 
673
   1. Section has file contents and is read-only.
674
   2. The VMA of the section is after the end of .text and before
675
      the start of .data.
676
   3. The image is demand-pageable (otherwise, a_text in the header
677
      will not reflect the gap between .text and .data).  */
678
 
679
#define aout_section_merge_with_text_p(abfd, sec)                       \
680
  (((sec)->flags & (SEC_HAS_CONTENTS | SEC_READONLY)) ==                \
681
      (SEC_HAS_CONTENTS | SEC_READONLY)                                 \
682
   && obj_textsec (abfd) != NULL                                        \
683
   && obj_datasec (abfd) != NULL                                        \
684
   && (sec)->vma >= (obj_textsec (abfd)->vma +                          \
685
                     obj_textsec (abfd)->size)                          \
686
   && ((sec)->vma + (sec)->size) <= obj_datasec (abfd)->vma             \
687
   && ((abfd)->flags & D_PAGED) != 0)
688
 
689
#endif /* ! defined (LIBAOUT_H) */

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