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[deliverable/binutils-gdb.git] / bfd / libaout.h
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252b5132 1/* BFD back-end data structures for a.out (and similar) files.
7898deda 2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
66eb6687 3 2000, 2001, 2002, 2003, 2004, 2005, 2006
252b5132
RH		 4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
6
e6af3a53 7 This file is part of BFD, the Binary File Descriptor library.
252b5132 8
e6af3a53
NC		 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 2 of the License, or
12 (at your option) any later version.
252b5132 13
e6af3a53
NC		 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.
252b5132 18
e6af3a53
NC		 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
3e110533 21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132
RH		 22
23#ifndef LIBAOUT_H
24#define LIBAOUT_H
25
26/* We try to encapsulate the differences in the various a.out file
27 variants in a few routines, and otherwise share large masses of code.
28 This means we only have to fix bugs in one place, most of the time. */
29
30#include "bfdlink.h"
31
edeb6e24 32/* Macros for accessing components in an aout header. */
dc810e39 33
7920ce38
NC		 34#define H_PUT_64 bfd_h_put_64
35#define H_PUT_32 bfd_h_put_32
36#define H_PUT_16 bfd_h_put_16
37#define H_PUT_8 bfd_h_put_8
edeb6e24
AM		 38#define H_PUT_S64 bfd_h_put_signed_64
39#define H_PUT_S32 bfd_h_put_signed_32
40#define H_PUT_S16 bfd_h_put_signed_16
7920ce38
NC		 41#define H_PUT_S8 bfd_h_put_signed_8
42#define H_GET_64 bfd_h_get_64
43#define H_GET_32 bfd_h_get_32
44#define H_GET_16 bfd_h_get_16
45#define H_GET_8 bfd_h_get_8
edeb6e24
AM		 46#define H_GET_S64 bfd_h_get_signed_64
47#define H_GET_S32 bfd_h_get_signed_32
48#define H_GET_S16 bfd_h_get_signed_16
7920ce38 49#define H_GET_S8 bfd_h_get_signed_8
dc810e39 50
252b5132
RH		 51/* Parameterize the a.out code based on whether it is being built
52 for a 32-bit architecture or a 64-bit architecture. */
e43d48cc
AM		 53/* Do not "beautify" the CONCAT* macro args. Traditional C will not
54 remove whitespace added here, and thus will fail to concatenate
55 the tokens. */
252b5132 56#if ARCH_SIZE==64
7920ce38 57#define GET_WORD H_GET_64
dc810e39
AM		 58#define GET_SWORD H_GET_S64
59#define GET_MAGIC H_GET_32
7920ce38 60#define PUT_WORD H_PUT_64
dc810e39 61#define PUT_MAGIC H_PUT_32
252b5132 62#ifndef NAME
e43d48cc 63#define NAME(x,y) CONCAT3 (x,_64_,y)
252b5132 64#endif
e43d48cc 65#define JNAME(x) CONCAT2 (x,_64)
252b5132 66#define BYTES_IN_WORD 8
e135f41b
NC		 67#else
68#if ARCH_SIZE==16
7920ce38 69#define GET_WORD H_GET_16
dc810e39
AM		 70#define GET_SWORD H_GET_S16
71#define GET_MAGIC H_GET_16
7920ce38 72#define PUT_WORD H_PUT_16
dc810e39 73#define PUT_MAGIC H_PUT_16
e135f41b 74#ifndef NAME
e43d48cc 75#define NAME(x,y) CONCAT3 (x,_16_,y)
e135f41b 76#endif
e43d48cc 77#define JNAME(x) CONCAT2 (x,_16)
e135f41b 78#define BYTES_IN_WORD 2
252b5132 79#else /* ARCH_SIZE == 32 */
7920ce38 80#define GET_WORD H_GET_32
dc810e39
AM		 81#define GET_SWORD H_GET_S32
82#define GET_MAGIC H_GET_32
7920ce38 83#define PUT_WORD H_PUT_32
dc810e39 84#define PUT_MAGIC H_PUT_32
252b5132 85#ifndef NAME
e43d48cc 86#define NAME(x,y) CONCAT3 (x,_32_,y)
252b5132 87#endif
e43d48cc 88#define JNAME(x) CONCAT2 (x,_32)
252b5132
RH		 89#define BYTES_IN_WORD 4
90#endif /* ARCH_SIZE==32 */
e135f41b 91#endif /* ARCH_SIZE==64 */
252b5132
RH		 92
93/* Declare at file level, since used in parameter lists, which have
94 weird scope. */
95struct external_exec;
96struct external_nlist;
97struct reloc_ext_external;
98struct reloc_std_external;
99\f
100/* a.out backend linker hash table entries. */
101
102struct aout_link_hash_entry
103{
104 struct bfd_link_hash_entry root;
105 /* Whether this symbol has been written out. */
b34976b6 106 bfd_boolean written;
252b5132
RH		 107 /* Symbol index in output file. */
108 int indx;
109};
110
111/* a.out backend linker hash table. */
112
113struct aout_link_hash_table
114{
115 struct bfd_link_hash_table root;
116};
117
118/* Look up an entry in an a.out link hash table. */
119
120#define aout_link_hash_lookup(table, string, create, copy, follow) \
121 ((struct aout_link_hash_entry *) \
122 bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow)))
123
124/* Traverse an a.out link hash table. */
125
126#define aout_link_hash_traverse(table, func, info) \
127 (bfd_link_hash_traverse \
128 (&(table)->root, \
7920ce38 129 (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
252b5132
RH		 130 (info)))
131
132/* Get the a.out link hash table from the info structure. This is
133 just a cast. */
134
135#define aout_hash_table(p) ((struct aout_link_hash_table *) ((p)->hash))
136\f
137/* Back-end information for various a.out targets. */
138struct aout_backend_data
139{
140 /* Are ZMAGIC files mapped contiguously? If so, the text section may
141 need more padding, if the segment size (granularity for memory access
142 control) is larger than the page size. */
143 unsigned char zmagic_mapped_contiguous;
144 /* If this flag is set, ZMAGIC/NMAGIC file headers get mapped in with the
145 text section, which starts immediately after the file header.
146 If not, the text section starts on the next page. */
147 unsigned char text_includes_header;
148
149 /* If this flag is set, then if the entry address is not in the
150 first SEGMENT_SIZE bytes of the text section, it is taken to be
151 the address of the start of the text section. This can be useful
152 for kernels. */
153 unsigned char entry_is_text_address;
154
155 /* The value to pass to N_SET_FLAGS. */
156 unsigned char exec_hdr_flags;
157
158 /* If the text section VMA isn't specified, and we need an absolute
159 address, use this as the default. If we're producing a relocatable
160 file, zero is always used. */
161 /* ?? Perhaps a callback would be a better choice? Will this do anything
162 reasonable for a format that handles multiple CPUs with different
163 load addresses for each? */
164 bfd_vma default_text_vma;
165
166 /* Callback for setting the page and segment sizes, if they can't be
167 trivially determined from the architecture. */
7920ce38 168 bfd_boolean (*set_sizes) (bfd *);
252b5132
RH		 169
170 /* zmagic files only. For go32, the length of the exec header contributes
171 to the size of the text section in the file for alignment purposes but
172 does *not* get counted in the length of the text section. */
173 unsigned char exec_header_not_counted;
174
175 /* Callback from the add symbols phase of the linker code to handle
176 a dynamic object. */
b34976b6 177 bfd_boolean (*add_dynamic_symbols)
7920ce38
NC		 178 (bfd *, struct bfd_link_info *, struct external_nlist **,
179 bfd_size_type *, char **);
252b5132
RH		 180
181 /* Callback from the add symbols phase of the linker code to handle
182 adding a single symbol to the global linker hash table. */
b34976b6 183 bfd_boolean (*add_one_symbol)
7920ce38
NC		 184 (struct bfd_link_info *, bfd *, const char *, flagword,
185 asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
186 struct bfd_link_hash_entry **);
252b5132
RH		 187
188 /* Called to handle linking a dynamic object. */
b34976b6 189 bfd_boolean (*link_dynamic_object)
7920ce38 190 (struct bfd_link_info *, bfd *);
252b5132
RH		 191
192 /* Called for each global symbol being written out by the linker.
193 This should write out the dynamic symbol information. */
b34976b6 194 bfd_boolean (*write_dynamic_symbol)
7920ce38 195 (bfd *, struct bfd_link_info *, struct aout_link_hash_entry *);
252b5132
RH		 196
197 /* If this callback is not NULL, the linker calls it for each reloc.
198 RELOC is a pointer to the unswapped reloc. If *SKIP is set to
b34976b6 199 TRUE, the reloc will be skipped. *RELOCATION may be changed to
252b5132 200 change the effects of the relocation. */
b34976b6 201 bfd_boolean (*check_dynamic_reloc)
7920ce38
NC		 202 (struct bfd_link_info *info, bfd *input_bfd,
203 asection *input_section, struct aout_link_hash_entry *h,
204 void * reloc, bfd_byte *contents, bfd_boolean *skip,
205 bfd_vma *relocation);
252b5132
RH		 206
207 /* Called at the end of a link to finish up any dynamic linking
208 information. */
7920ce38 209 bfd_boolean (*finish_dynamic_link) (bfd *, struct bfd_link_info *);
252b5132
RH		 210};
211#define aout_backend_info(abfd) \
dc810e39 212 ((const struct aout_backend_data *)((abfd)->xvec->backend_data))
252b5132
RH		 213
214/* This is the layout in memory of a "struct exec" while we process it.
215 All 'lengths' are given as a number of bytes.
216 All 'alignments' are for relinkable files only; an alignment of
217 'n' indicates the corresponding segment must begin at an
218 address that is a multiple of (2**n). */
219
220struct internal_exec
221{
aca305d9
NC		 222 long a_info; /* Magic number and flags, packed. */
223 bfd_vma a_text; /* Length of text, in bytes. */
224 bfd_vma a_data; /* Length of data, in bytes. */
225 bfd_vma a_bss; /* Length of uninitialized data area in mem. */
226 bfd_vma a_syms; /* Length of symbol table data in file. */
227 bfd_vma a_entry; /* Start address. */
228 bfd_vma a_trsize; /* Length of text's relocation info, in bytes. */
229 bfd_vma a_drsize; /* Length of data's relocation info, in bytes. */
230 /* Added for i960 */
231 bfd_vma a_tload; /* Text runtime load address. */
232 bfd_vma a_dload; /* Data runtime load address. */
233 unsigned char a_talign; /* Alignment of text segment. */
234 unsigned char a_dalign; /* Alignment of data segment. */
235 unsigned char a_balign; /* Alignment of bss segment. */
236 char a_relaxable; /* Enough info for linker relax. */
252b5132
RH		 237};
238
dc810e39 239/* Magic number is written
aca305d9
NC		 240 < MSB >
241 3130292827262524232221201918171615141312111009080706050403020100
242 < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
243
252b5132 244/* Magic number for NetBSD is
aca305d9
NC		 245 <MSB >
246 3130292827262524232221201918171615141312111009080706050403020100
247 < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
252b5132 248
aca305d9
NC		 249enum machine_type
250{
252b5132
RH		 251 M_UNKNOWN = 0,
252 M_68010 = 1,
253 M_68020 = 2,
254 M_SPARC = 3,
e6af3a53
NC		 255 /* Skip a bunch so we don't run into any of SUN's numbers. */
256 /* Make these up for the ns32k. */
aca305d9
NC		 257 M_NS32032 = (64), /* NS32032 running ? */
258 M_NS32532 = (64 + 5), /* NS32532 running mach. */
252b5132 259 M_386 = 100,
aca305d9
NC		 260 M_29K = 101, /* AMD 29000. */
261 M_386_DYNIX = 102, /* Sequent running dynix. */
262 M_ARM = 103, /* Advanced Risc Machines ARM. */
263 M_SPARCLET = 131, /* SPARClet = M_SPARC + 128. */
264 M_386_NETBSD = 134, /* NetBSD/i386 binary. */
265 M_68K_NETBSD = 135, /* NetBSD/m68k binary. */
266 M_68K4K_NETBSD = 136, /* NetBSD/m68k4k binary. */
267 M_532_NETBSD = 137, /* NetBSD/ns32k binary. */
268 M_SPARC_NETBSD = 138, /* NetBSD/sparc binary. */
269 M_PMAX_NETBSD = 139, /* NetBSD/pmax (MIPS little-endian) binary. */
270 M_VAX_NETBSD = 140, /* NetBSD/vax binary. */
271 M_ALPHA_NETBSD = 141, /* NetBSD/alpha binary. */
272 M_ARM6_NETBSD = 143, /* NetBSD/arm32 binary. */
273 M_SPARCLET_1 = 147, /* 0x93, reserved. */
7f919c84 274 M_POWERPC_NETBSD = 149, /* NetBSD/powerpc (big-endian) binary. */
aca305d9
NC		 275 M_VAX4K_NETBSD = 150, /* NetBSD/vax 4K pages binary. */
276 M_MIPS1 = 151, /* MIPS R2000/R3000 binary. */
277 M_MIPS2 = 152, /* MIPS R4000/R6000 binary. */
8377c19c
MK		 278 M_88K_OPENBSD = 153, /* OpenBSD/m88k binary. */
279 M_HPPA_OPENBSD = 154, /* OpenBSD/hppa binary. */
aca305d9
NC		 280 M_SPARC64_NETBSD = 156, /* NetBSD/sparc64 binary. */
281 M_X86_64_NETBSD = 157, /* NetBSD/amd64 binary. */
282 M_SPARCLET_2 = 163, /* 0xa3, reserved. */
283 M_SPARCLET_3 = 179, /* 0xb3, reserved. */
284 M_SPARCLET_4 = 195, /* 0xc3, reserved. */
285 M_HP200 = 200, /* HP 200 (68010) BSD binary. */
286 M_HP300 = (300 % 256), /* HP 300 (68020+68881) BSD binary. */
287 M_HPUX = (0x20c % 256), /* HP 200/300 HPUX binary. */
288 M_SPARCLET_5 = 211, /* 0xd3, reserved. */
289 M_SPARCLET_6 = 227, /* 0xe3, reserved. */
290/*M_SPARCLET_7 = 243 / * 0xf3, reserved. */
06c15ad7 291 M_SPARCLITE_LE = 243,
aca305d9 292 M_CRIS = 255 /* Axis CRIS binary. */
252b5132
RH		 293};
294
295#define N_DYNAMIC(exec) ((exec).a_info & 0x80000000)
296
297#ifndef N_MAGIC
298# define N_MAGIC(exec) ((exec).a_info & 0xffff)
299#endif
300
301#ifndef N_MACHTYPE
302# define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
303#endif
304
305#ifndef N_FLAGS
306# define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
307#endif
308
309#ifndef N_SET_INFO
310# define N_SET_INFO(exec, magic, type, flags) \
311((exec).a_info = ((magic) & 0xffff) \
312 | (((int)(type) & 0xff) << 16) \
313 | (((flags) & 0xff) << 24))
314#endif
315
316#ifndef N_SET_DYNAMIC
317# define N_SET_DYNAMIC(exec, dynamic) \
67a374a5 318((exec).a_info = (dynamic) ? (long) ((exec).a_info | 0x80000000) : \
252b5132
RH		 319((exec).a_info & 0x7fffffff))
320#endif
321
322#ifndef N_SET_MAGIC
323# define N_SET_MAGIC(exec, magic) \
324((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
325#endif
326
327#ifndef N_SET_MACHTYPE
328# define N_SET_MACHTYPE(exec, machtype) \
329((exec).a_info = \
330 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
331#endif
332
333#ifndef N_SET_FLAGS
334# define N_SET_FLAGS(exec, flags) \
335((exec).a_info = \
336 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
337#endif
338
aca305d9
NC		 339typedef struct aout_symbol
340{
252b5132
RH		 341 asymbol symbol;
342 short desc;
343 char other;
344 unsigned char type;
345} aout_symbol_type;
346
347/* The `tdata' struct for all a.out-like object file formats.
348 Various things depend on this struct being around any time an a.out
349 file is being handled. An example is dbxread.c in GDB. */
350
aca305d9
NC		 351struct aoutdata
352{
353 struct internal_exec *hdr; /* Exec file header. */
354 aout_symbol_type *symbols; /* Symtab for input bfd. */
dc810e39 355
e6af3a53 356 /* For ease, we do this. */
252b5132
RH		 357 asection *textsec;
358 asection *datasec;
359 asection *bsssec;
360
361 /* We remember these offsets so that after check_file_format, we have
362 no dependencies on the particular format of the exec_hdr. */
363 file_ptr sym_filepos;
364 file_ptr str_filepos;
365
e6af3a53 366 /* Size of a relocation entry in external form. */
252b5132
RH		 367 unsigned reloc_entry_size;
368
e6af3a53 369 /* Size of a symbol table entry in external form. */
252b5132
RH		 370 unsigned symbol_entry_size;
371
e6af3a53 372 /* Page size - needed for alignment of demand paged files. */
252b5132
RH		 373 unsigned long page_size;
374
e6af3a53 375 /* Segment size - needed for alignment of demand paged files. */
252b5132
RH		 376 unsigned long segment_size;
377
378 /* Zmagic disk block size - need to align the start of the text
379 section in ZMAGIC binaries. Normally the same as page_size. */
380 unsigned long zmagic_disk_block_size;
381
382 unsigned exec_bytes_size;
383 unsigned vma_adjusted : 1;
384
e6af3a53 385 /* Used when a bfd supports several highly similar formats. */
252b5132
RH		 386 enum
387 {
388 default_format = 0,
389 /* Used on HP 9000/300 running HP/UX. See hp300hpux.c. */
390 gnu_encap_format,
391 /* Used on Linux, 386BSD, etc. See include/aout/aout64.h. */
392 q_magic_format
393 } subformat;
394
395 enum
396 {
397 undecided_magic = 0,
398 z_magic,
399 o_magic,
400 n_magic
401 } magic;
402
403 /* A buffer for find_nearest_line. */
404 char *line_buf;
405
406 /* The external symbol information. */
407 struct external_nlist *external_syms;
408 bfd_size_type external_sym_count;
409 bfd_window sym_window;
410 char *external_strings;
411 bfd_size_type external_string_size;
412 bfd_window string_window;
413 struct aout_link_hash_entry **sym_hashes;
414
415 /* A pointer for shared library information. */
7920ce38 416 void * dynamic_info;
252b5132
RH		 417
418 /* A mapping from local symbols to offsets into the global offset
419 table, used when linking on SunOS. This is indexed by the symbol
420 index. */
421 bfd_vma *local_got_offsets;
422};
423
aca305d9
NC		 424struct aout_data_struct
425{
426 struct aoutdata a;
427 struct internal_exec e;
252b5132
RH		 428};
429
aca305d9
NC		 430#define adata(bfd) ((bfd)->tdata.aout_data->a)
431#define exec_hdr(bfd) (adata (bfd).hdr)
432#define obj_aout_symbols(bfd) (adata (bfd).symbols)
433#define obj_textsec(bfd) (adata (bfd).textsec)
434#define obj_datasec(bfd) (adata (bfd).datasec)
435#define obj_bsssec(bfd) (adata (bfd).bsssec)
436#define obj_sym_filepos(bfd) (adata (bfd).sym_filepos)
437#define obj_str_filepos(bfd) (adata (bfd).str_filepos)
438#define obj_reloc_entry_size(bfd) (adata (bfd).reloc_entry_size)
439#define obj_symbol_entry_size(bfd) (adata (bfd).symbol_entry_size)
440#define obj_aout_subformat(bfd) (adata (bfd).subformat)
441#define obj_aout_external_syms(bfd) (adata (bfd).external_syms)
442#define obj_aout_external_sym_count(bfd) (adata (bfd).external_sym_count)
443#define obj_aout_sym_window(bfd) (adata (bfd).sym_window)
444#define obj_aout_external_strings(bfd) (adata (bfd).external_strings)
445#define obj_aout_external_string_size(bfd) (adata (bfd).external_string_size)
446#define obj_aout_string_window(bfd) (adata (bfd).string_window)
447#define obj_aout_sym_hashes(bfd) (adata (bfd).sym_hashes)
448#define obj_aout_dynamic_info(bfd) (adata (bfd).dynamic_info)
252b5132
RH		 449
450/* We take the address of the first element of an asymbol to ensure that the
e6af3a53 451 macro is only ever applied to an asymbol. */
252b5132
RH		 452#define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))
453
454/* Information we keep for each a.out section. This is currently only
455 used by the a.out backend linker. */
456
457struct aout_section_data_struct
458{
459 /* The unswapped relocation entries for this section. */
7920ce38 460 void * relocs;
252b5132
RH		 461};
462
463#define aout_section_data(s) \
464 ((struct aout_section_data_struct *) (s)->used_by_bfd)
465
466#define set_aout_section_data(s,v) \
7920ce38 467 ((s)->used_by_bfd = (void *)&(v)->relocs)
252b5132 468
e6af3a53 469/* Prototype declarations for functions defined in aoutx.h. */
252b5132 470
7920ce38
NC		 471extern bfd_boolean NAME (aout, squirt_out_relocs)
472 (bfd *, asection *);
252b5132 473
7920ce38
NC		 474extern bfd_boolean NAME (aout, make_sections)
475 (bfd *);
252b5132 476
7920ce38
NC		 477extern const bfd_target * NAME (aout, some_aout_object_p)
478 (bfd *, struct internal_exec *, const bfd_target *(*) (bfd *));
252b5132 479
7920ce38
NC		 480extern bfd_boolean NAME (aout, mkobject)
481 (bfd *);
252b5132 482
7920ce38
NC		 483extern enum machine_type NAME (aout, machine_type)
484 (enum bfd_architecture, unsigned long, bfd_boolean *);
252b5132 485
7920ce38
NC		 486extern bfd_boolean NAME (aout, set_arch_mach)
487 (bfd *, enum bfd_architecture, unsigned long);
252b5132 488
7920ce38
NC		 489extern bfd_boolean NAME (aout, new_section_hook)
490 (bfd *, asection *);
252b5132 491
7920ce38
NC		 492extern bfd_boolean NAME (aout, set_section_contents)
493 (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type);
252b5132 494
7920ce38
NC		 495extern asymbol * NAME (aout, make_empty_symbol)
496 (bfd *);
252b5132 497
7920ce38
NC		 498extern bfd_boolean NAME (aout, translate_symbol_table)
499 (bfd *, aout_symbol_type *, struct external_nlist *, bfd_size_type,
500 char *, bfd_size_type, bfd_boolean);
252b5132 501
7920ce38
NC		 502extern bfd_boolean NAME (aout, slurp_symbol_table)
503 (bfd *);
252b5132 504
7920ce38
NC		 505extern bfd_boolean NAME (aout, write_syms)
506 (bfd *);
252b5132 507
7920ce38
NC		 508extern void NAME (aout, reclaim_symbol_table)
509 (bfd *);
252b5132 510
7920ce38
NC		 511extern long NAME (aout, get_symtab_upper_bound)
512 (bfd *);
252b5132 513
7920ce38
NC		 514extern long NAME (aout, canonicalize_symtab)
515 (bfd *, asymbol **);
252b5132 516
7920ce38
NC		 517extern void NAME (aout, swap_ext_reloc_in)
518 (bfd *, struct reloc_ext_external *, arelent *, asymbol **,
519 bfd_size_type);
252b5132 520
7920ce38
NC		 521extern void NAME (aout, swap_std_reloc_in)
522 (bfd *, struct reloc_std_external *, arelent *, asymbol **,
523 bfd_size_type);
252b5132 524
7920ce38
NC		 525extern reloc_howto_type * NAME (aout, reloc_type_lookup)
526 (bfd *, bfd_reloc_code_real_type);
252b5132 527
7920ce38
NC		 528extern bfd_boolean NAME (aout, slurp_reloc_table)
529 (bfd *, sec_ptr, asymbol **);
252b5132 530
7920ce38
NC		 531extern long NAME (aout, canonicalize_reloc)
532 (bfd *, sec_ptr, arelent **, asymbol **);
252b5132 533
7920ce38
NC		 534extern long NAME (aout, get_reloc_upper_bound)
535 (bfd *, sec_ptr);
252b5132 536
7920ce38
NC		 537extern void NAME (aout, reclaim_reloc)
538 (bfd *, sec_ptr);
252b5132 539
7920ce38
NC		 540extern alent * NAME (aout, get_lineno)
541 (bfd *, asymbol *);
252b5132 542
7920ce38
NC		 543extern void NAME (aout, print_symbol)
544 (bfd *, void *, asymbol *, bfd_print_symbol_type);
252b5132 545
7920ce38
NC		 546extern void NAME (aout, get_symbol_info)
547 (bfd *, asymbol *, symbol_info *);
252b5132 548
7920ce38
NC		 549extern bfd_boolean NAME (aout, find_nearest_line)
550 (bfd *, asection *, asymbol **, bfd_vma, const char **,
551 const char **, unsigned int *);
252b5132 552
7920ce38
NC		 553extern long NAME (aout, read_minisymbols)
554 (bfd *, bfd_boolean, void * *, unsigned int *);
252b5132 555
7920ce38
NC		 556extern asymbol * NAME (aout, minisymbol_to_symbol)
557 (bfd *, bfd_boolean, const void *, asymbol *);
252b5132 558
7920ce38 559extern int NAME (aout, sizeof_headers)
a6b96beb 560 (bfd *, struct bfd_link_info *);
252b5132 561
7920ce38
NC		 562extern bfd_boolean NAME (aout, adjust_sizes_and_vmas)
563 (bfd *, bfd_size_type *, file_ptr *);
252b5132 564
7920ce38
NC		 565extern void NAME (aout, swap_exec_header_in)
566 (bfd *, struct external_exec *, struct internal_exec *);
252b5132 567
7920ce38
NC		 568extern void NAME (aout, swap_exec_header_out)
569 (bfd *, struct internal_exec *, struct external_exec *);
252b5132 570
7920ce38
NC		 571extern struct bfd_hash_entry * NAME (aout, link_hash_newfunc)
572 (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
252b5132 573
7920ce38
NC		 574extern bfd_boolean NAME (aout, link_hash_table_init)
575 (struct aout_link_hash_table *, bfd *,
576 struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
577 struct bfd_hash_table *,
66eb6687
AM		 578 const char *),
579 unsigned int);
252b5132 580
7920ce38
NC		 581extern struct bfd_link_hash_table * NAME (aout, link_hash_table_create)
582 (bfd *);
252b5132 583
7920ce38
NC		 584extern bfd_boolean NAME (aout, link_add_symbols)
585 (bfd *, struct bfd_link_info *);
252b5132 586
7920ce38
NC		 587extern bfd_boolean NAME (aout, final_link)
588 (bfd *, struct bfd_link_info *,
589 void (*) (bfd *, file_ptr *, file_ptr *, file_ptr *));
590
591extern bfd_boolean NAME (aout, bfd_free_cached_info)
592 (bfd *);
252b5132 593
4ab527b0
FF		 594#define aout_32_find_inliner_info _bfd_nosymbols_find_inliner_info
595#if 0 /* Are these needed? */
596#define aout_16_find_inliner_info _bfd_nosymbols_find_inliner_info
597#define aout_64_find_inliner_info _bfd_nosymbols_find_inliner_info
598#endif
599
e6af3a53 600/* A.out uses the generic versions of these routines... */
252b5132 601
e135f41b
NC		 602#define aout_16_get_section_contents _bfd_generic_get_section_contents
603
252b5132
RH		 604#define aout_32_get_section_contents _bfd_generic_get_section_contents
605
606#define aout_64_get_section_contents _bfd_generic_get_section_contents
607#ifndef NO_WRITE_HEADER_KLUDGE
608#define NO_WRITE_HEADER_KLUDGE 0
609#endif
610
611#ifndef aout_32_bfd_is_local_label_name
612#define aout_32_bfd_is_local_label_name bfd_generic_is_local_label_name
613#endif
614
3c9458e9
NC		 615#ifndef aout_32_bfd_is_target_special_symbol
616#define aout_32_bfd_is_target_special_symbol \
617 ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
618#endif
619
252b5132
RH		 620#ifndef WRITE_HEADERS
621#define WRITE_HEADERS(abfd, execp) \
622 { \
aca305d9 623 bfd_size_type text_size; /* Dummy vars. */ \
252b5132 624 file_ptr text_end; \
7920ce38 625 \
252b5132 626 if (adata(abfd).magic == undecided_magic) \
7920ce38 627 NAME (aout, adjust_sizes_and_vmas) (abfd, & text_size, & text_end); \
252b5132
RH		 628 \
629 execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \
630 execp->a_entry = bfd_get_start_address (abfd); \
631 \
632 execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \
633 obj_reloc_entry_size (abfd)); \
634 execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \
635 obj_reloc_entry_size (abfd)); \
7920ce38 636 NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes); \
252b5132 637 \
dc810e39 638 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 \
7920ce38 639 || bfd_bwrite (& exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, \
dc810e39 640 abfd) != EXEC_BYTES_SIZE) \
b34976b6 641 return FALSE; \
e6af3a53 642 /* Now write out reloc info, followed by syms and strings. */ \
252b5132 643 \
7920ce38 644 if (bfd_get_outsymbols (abfd) != NULL \
252b5132
RH		 645 && bfd_get_symcount (abfd) != 0) \
646 { \
dc810e39 647 if (bfd_seek (abfd, (file_ptr) (N_SYMOFF(*execp)), SEEK_SET) != 0)\
b34976b6 648 return FALSE; \
252b5132 649 \
7920ce38 650 if (! NAME (aout, write_syms) (abfd)) \
b34976b6 651 return FALSE; \
252b5132
RH		 652 } \
653 \
aca305d9 654 if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (*execp)), SEEK_SET) != 0) \
b34976b6 655 return FALSE; \
7920ce38 656 if (!NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd))) \
b34976b6 657 return FALSE; \
252b5132 658 \
aca305d9 659 if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp)), SEEK_SET) != 0) \
b34976b6 660 return FALSE; \
7920ce38 661 if (!NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd))) \
b34976b6 662 return FALSE; \
dc810e39 663 }
252b5132
RH		 664#endif
665
e6af3a53
NC		 666/* Test if a read-only section can be merged with .text. This is
667 possible if:
668
669 1. Section has file contents and is read-only.
670 2. The VMA of the section is after the end of .text and before
671 the start of .data.
672 3. The image is demand-pageable (otherwise, a_text in the header
673 will not reflect the gap between .text and .data). */
674
675#define aout_section_merge_with_text_p(abfd, sec) \
676 (((sec)->flags & (SEC_HAS_CONTENTS | SEC_READONLY)) == \
677 (SEC_HAS_CONTENTS | SEC_READONLY) \
678 && obj_textsec (abfd) != NULL \
679 && obj_datasec (abfd) != NULL \
680 && (sec)->vma >= (obj_textsec (abfd)->vma + \
eea6121a
AM		 681 obj_textsec (abfd)->size) \
682 && ((sec)->vma + (sec)->size) <= obj_datasec (abfd)->vma \
e6af3a53
NC		 683 && ((abfd)->flags & D_PAGED) != 0)
684
252b5132 685#endif /* ! defined (LIBAOUT_H) */
GDB Binutils - Deliverables
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