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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,
157090f7 3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
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
cd123cb7 11 the Free Software Foundation; either version 3 of the License, or
e6af3a53 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
cd123cb7
NC		 21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
252b5132
RH		 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
edeb6e24 33/* Macros for accessing components in an aout header. */
dc810e39 34
7920ce38
NC		 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
edeb6e24
AM		 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
7920ce38
NC		 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
edeb6e24
AM		 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
7920ce38 50#define H_GET_S8 bfd_h_get_signed_8
dc810e39 51
252b5132
RH		 52/* Parameterize the a.out code based on whether it is being built
53 for a 32-bit architecture or a 64-bit architecture. */
e43d48cc
AM		 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. */
252b5132 57#if ARCH_SIZE==64
7920ce38 58#define GET_WORD H_GET_64
dc810e39
AM		 59#define GET_SWORD H_GET_S64
60#define GET_MAGIC H_GET_32
7920ce38 61#define PUT_WORD H_PUT_64
dc810e39 62#define PUT_MAGIC H_PUT_32
252b5132 63#ifndef NAME
e43d48cc 64#define NAME(x,y) CONCAT3 (x,_64_,y)
252b5132 65#endif
e43d48cc 66#define JNAME(x) CONCAT2 (x,_64)
252b5132 67#define BYTES_IN_WORD 8
e135f41b
NC		 68#else
69#if ARCH_SIZE==16
7920ce38 70#define GET_WORD H_GET_16
dc810e39
AM		 71#define GET_SWORD H_GET_S16
72#define GET_MAGIC H_GET_16
7920ce38 73#define PUT_WORD H_PUT_16
dc810e39 74#define PUT_MAGIC H_PUT_16
e135f41b 75#ifndef NAME
e43d48cc 76#define NAME(x,y) CONCAT3 (x,_16_,y)
e135f41b 77#endif
e43d48cc 78#define JNAME(x) CONCAT2 (x,_16)
e135f41b 79#define BYTES_IN_WORD 2
252b5132 80#else /* ARCH_SIZE == 32 */
7920ce38 81#define GET_WORD H_GET_32
dc810e39
AM		 82#define GET_SWORD H_GET_S32
83#define GET_MAGIC H_GET_32
7920ce38 84#define PUT_WORD H_PUT_32
dc810e39 85#define PUT_MAGIC H_PUT_32
252b5132 86#ifndef NAME
e43d48cc 87#define NAME(x,y) CONCAT3 (x,_32_,y)
252b5132 88#endif
e43d48cc 89#define JNAME(x) CONCAT2 (x,_32)
252b5132
RH		 90#define BYTES_IN_WORD 4
91#endif /* ARCH_SIZE==32 */
e135f41b 92#endif /* ARCH_SIZE==64 */
252b5132
RH		 93
94/* Declare at file level, since used in parameter lists, which have
95 weird scope. */
96struct external_exec;
97struct external_nlist;
98struct reloc_ext_external;
99struct reloc_std_external;
100\f
101/* a.out backend linker hash table entries. */
102
103struct aout_link_hash_entry
104{
105 struct bfd_link_hash_entry root;
106 /* Whether this symbol has been written out. */
b34976b6 107 bfd_boolean written;
252b5132
RH		 108 /* Symbol index in output file. */
109 int indx;
110};
111
112/* a.out backend linker hash table. */
113
114struct 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, \
7920ce38 130 (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
252b5132
RH		 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\f
138/* Back-end information for various a.out targets. */
139struct 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. */
7920ce38 169 bfd_boolean (*set_sizes) (bfd *);
252b5132
RH		 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. */
b34976b6 178 bfd_boolean (*add_dynamic_symbols)
7920ce38
NC		 179 (bfd *, struct bfd_link_info *, struct external_nlist **,
180 bfd_size_type *, char **);
252b5132
RH		 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. */
b34976b6 184 bfd_boolean (*add_one_symbol)
7920ce38
NC		 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 **);
252b5132
RH		 188
189 /* Called to handle linking a dynamic object. */
b34976b6 190 bfd_boolean (*link_dynamic_object)
7920ce38 191 (struct bfd_link_info *, bfd *);
252b5132
RH		 192
193 /* Called for each global symbol being written out by the linker.
194 This should write out the dynamic symbol information. */
b34976b6 195 bfd_boolean (*write_dynamic_symbol)
7920ce38 196 (bfd *, struct bfd_link_info *, struct aout_link_hash_entry *);
252b5132
RH		 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
b34976b6 200 TRUE, the reloc will be skipped. *RELOCATION may be changed to
252b5132 201 change the effects of the relocation. */
b34976b6 202 bfd_boolean (*check_dynamic_reloc)
7920ce38
NC		 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);
252b5132
RH		 207
208 /* Called at the end of a link to finish up any dynamic linking
209 information. */
7920ce38 210 bfd_boolean (*finish_dynamic_link) (bfd *, struct bfd_link_info *);
252b5132
RH		 211};
212#define aout_backend_info(abfd) \
dc810e39 213 ((const struct aout_backend_data *)((abfd)->xvec->backend_data))
252b5132
RH		 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
221struct internal_exec
222{
aca305d9
NC		 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. */
252b5132
RH		 238};
239
dc810e39 240/* Magic number is written
aca305d9
NC		 241 < MSB >
242 3130292827262524232221201918171615141312111009080706050403020100
243 < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
244
252b5132 245/* Magic number for NetBSD is
aca305d9
NC		 246 <MSB >
247 3130292827262524232221201918171615141312111009080706050403020100
248 < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
252b5132 249
aca305d9
NC		 250enum machine_type
251{
252b5132
RH		 252 M_UNKNOWN = 0,
253 M_68010 = 1,
254 M_68020 = 2,
255 M_SPARC = 3,
e6af3a53
NC		 256 /* Skip a bunch so we don't run into any of SUN's numbers. */
257 /* Make these up for the ns32k. */
aca305d9
NC		 258 M_NS32032 = (64), /* NS32032 running ? */
259 M_NS32532 = (64 + 5), /* NS32532 running mach. */
252b5132 260 M_386 = 100,
aca305d9
NC		 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. */
7f919c84 275 M_POWERPC_NETBSD = 149, /* NetBSD/powerpc (big-endian) binary. */
aca305d9
NC		 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. */
8377c19c
MK		 279 M_88K_OPENBSD = 153, /* OpenBSD/m88k binary. */
280 M_HPPA_OPENBSD = 154, /* OpenBSD/hppa binary. */
aca305d9
NC		 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. */
06c15ad7 292 M_SPARCLITE_LE = 243,
aca305d9 293 M_CRIS = 255 /* Axis CRIS binary. */
252b5132
RH		 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) \
67a374a5 319((exec).a_info = (dynamic) ? (long) ((exec).a_info | 0x80000000) : \
252b5132
RH		 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
aca305d9
NC		 340typedef struct aout_symbol
341{
252b5132
RH		 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
aca305d9
NC		 352struct aoutdata
353{
354 struct internal_exec *hdr; /* Exec file header. */
355 aout_symbol_type *symbols; /* Symtab for input bfd. */
dc810e39 356
e6af3a53 357 /* For ease, we do this. */
252b5132
RH		 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
e6af3a53 367 /* Size of a relocation entry in external form. */
252b5132
RH		 368 unsigned reloc_entry_size;
369
e6af3a53 370 /* Size of a symbol table entry in external form. */
252b5132
RH		 371 unsigned symbol_entry_size;
372
e6af3a53 373 /* Page size - needed for alignment of demand paged files. */
252b5132
RH		 374 unsigned long page_size;
375
e6af3a53 376 /* Segment size - needed for alignment of demand paged files. */
252b5132
RH		 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
e6af3a53 386 /* Used when a bfd supports several highly similar formats. */
252b5132
RH		 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. */
7920ce38 417 void * dynamic_info;
252b5132
RH		 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
aca305d9
NC		 425struct aout_data_struct
426{
427 struct aoutdata a;
428 struct internal_exec e;
252b5132
RH		 429};
430
aca305d9
NC		 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)
252b5132
RH		 450
451/* We take the address of the first element of an asymbol to ensure that the
e6af3a53 452 macro is only ever applied to an asymbol. */
252b5132
RH		 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
458struct aout_section_data_struct
459{
460 /* The unswapped relocation entries for this section. */
7920ce38 461 void * relocs;
252b5132
RH		 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) \
7920ce38 468 ((s)->used_by_bfd = (void *)&(v)->relocs)
252b5132 469
e6af3a53 470/* Prototype declarations for functions defined in aoutx.h. */
252b5132 471
7920ce38
NC		 472extern bfd_boolean NAME (aout, squirt_out_relocs)
473 (bfd *, asection *);
252b5132 474
7920ce38
NC		 475extern bfd_boolean NAME (aout, make_sections)
476 (bfd *);
252b5132 477
7920ce38
NC		 478extern const bfd_target * NAME (aout, some_aout_object_p)
479 (bfd *, struct internal_exec *, const bfd_target *(*) (bfd *));
252b5132 480
7920ce38
NC		 481extern bfd_boolean NAME (aout, mkobject)
482 (bfd *);
252b5132 483
7920ce38
NC		 484extern enum machine_type NAME (aout, machine_type)
485 (enum bfd_architecture, unsigned long, bfd_boolean *);
252b5132 486
7920ce38
NC		 487extern bfd_boolean NAME (aout, set_arch_mach)
488 (bfd *, enum bfd_architecture, unsigned long);
252b5132 489
7920ce38
NC		 490extern bfd_boolean NAME (aout, new_section_hook)
491 (bfd *, asection *);
252b5132 492
7920ce38
NC		 493extern bfd_boolean NAME (aout, set_section_contents)
494 (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type);
252b5132 495
7920ce38
NC		 496extern asymbol * NAME (aout, make_empty_symbol)
497 (bfd *);
252b5132 498
7920ce38
NC		 499extern 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);
252b5132 502
7920ce38
NC		 503extern bfd_boolean NAME (aout, slurp_symbol_table)
504 (bfd *);
252b5132 505
7920ce38
NC		 506extern bfd_boolean NAME (aout, write_syms)
507 (bfd *);
252b5132 508
7920ce38
NC		 509extern void NAME (aout, reclaim_symbol_table)
510 (bfd *);
252b5132 511
7920ce38
NC		 512extern long NAME (aout, get_symtab_upper_bound)
513 (bfd *);
252b5132 514
7920ce38
NC		 515extern long NAME (aout, canonicalize_symtab)
516 (bfd *, asymbol **);
252b5132 517
7920ce38
NC		 518extern void NAME (aout, swap_ext_reloc_in)
519 (bfd *, struct reloc_ext_external *, arelent *, asymbol **,
520 bfd_size_type);
252b5132 521
7920ce38
NC		 522extern void NAME (aout, swap_std_reloc_in)
523 (bfd *, struct reloc_std_external *, arelent *, asymbol **,
524 bfd_size_type);
252b5132 525
7920ce38
NC		 526extern reloc_howto_type * NAME (aout, reloc_type_lookup)
527 (bfd *, bfd_reloc_code_real_type);
252b5132 528
157090f7
AM		 529extern reloc_howto_type * NAME (aout, reloc_name_lookup)
530 (bfd *, const char *);
531
7920ce38
NC		 532extern bfd_boolean NAME (aout, slurp_reloc_table)
533 (bfd *, sec_ptr, asymbol **);
252b5132 534
7920ce38
NC		 535extern long NAME (aout, canonicalize_reloc)
536 (bfd *, sec_ptr, arelent **, asymbol **);
252b5132 537
7920ce38
NC		 538extern long NAME (aout, get_reloc_upper_bound)
539 (bfd *, sec_ptr);
252b5132 540
7920ce38
NC		 541extern void NAME (aout, reclaim_reloc)
542 (bfd *, sec_ptr);
252b5132 543
7920ce38
NC		 544extern alent * NAME (aout, get_lineno)
545 (bfd *, asymbol *);
252b5132 546
7920ce38
NC		 547extern void NAME (aout, print_symbol)
548 (bfd *, void *, asymbol *, bfd_print_symbol_type);
252b5132 549
7920ce38
NC		 550extern void NAME (aout, get_symbol_info)
551 (bfd *, asymbol *, symbol_info *);
252b5132 552
7920ce38
NC		 553extern bfd_boolean NAME (aout, find_nearest_line)
554 (bfd *, asection *, asymbol **, bfd_vma, const char **,
555 const char **, unsigned int *);
252b5132 556
7920ce38
NC		 557extern long NAME (aout, read_minisymbols)
558 (bfd *, bfd_boolean, void * *, unsigned int *);
252b5132 559
7920ce38
NC		 560extern asymbol * NAME (aout, minisymbol_to_symbol)
561 (bfd *, bfd_boolean, const void *, asymbol *);
252b5132 562
7920ce38 563extern int NAME (aout, sizeof_headers)
a6b96beb 564 (bfd *, struct bfd_link_info *);
252b5132 565
7920ce38
NC		 566extern bfd_boolean NAME (aout, adjust_sizes_and_vmas)
567 (bfd *, bfd_size_type *, file_ptr *);
252b5132 568
7920ce38
NC		 569extern void NAME (aout, swap_exec_header_in)
570 (bfd *, struct external_exec *, struct internal_exec *);
252b5132 571
7920ce38
NC		 572extern void NAME (aout, swap_exec_header_out)
573 (bfd *, struct internal_exec *, struct external_exec *);
252b5132 574
7920ce38
NC		 575extern struct bfd_hash_entry * NAME (aout, link_hash_newfunc)
576 (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
252b5132 577
7920ce38
NC		 578extern 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 *,
66eb6687
AM		 582 const char *),
583 unsigned int);
252b5132 584
7920ce38
NC		 585extern struct bfd_link_hash_table * NAME (aout, link_hash_table_create)
586 (bfd *);
252b5132 587
7920ce38
NC		 588extern bfd_boolean NAME (aout, link_add_symbols)
589 (bfd *, struct bfd_link_info *);
252b5132 590
7920ce38
NC		 591extern bfd_boolean NAME (aout, final_link)
592 (bfd *, struct bfd_link_info *,
593 void (*) (bfd *, file_ptr *, file_ptr *, file_ptr *));
594
595extern bfd_boolean NAME (aout, bfd_free_cached_info)
596 (bfd *);
252b5132 597
4ab527b0
FF		 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
e6af3a53 604/* A.out uses the generic versions of these routines... */
252b5132 605
e135f41b
NC		 606#define aout_16_get_section_contents _bfd_generic_get_section_contents
607
252b5132
RH		 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
3c9458e9
NC		 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
252b5132
RH		 624#ifndef WRITE_HEADERS
625#define WRITE_HEADERS(abfd, execp) \
626 { \
aca305d9 627 bfd_size_type text_size; /* Dummy vars. */ \
252b5132 628 file_ptr text_end; \
7920ce38 629 \
252b5132 630 if (adata(abfd).magic == undecided_magic) \
7920ce38 631 NAME (aout, adjust_sizes_and_vmas) (abfd, & text_size, & text_end); \
252b5132
RH		 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)); \
7920ce38 640 NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes); \
252b5132 641 \
dc810e39 642 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 \
7920ce38 643 || bfd_bwrite (& exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, \
dc810e39 644 abfd) != EXEC_BYTES_SIZE) \
b34976b6 645 return FALSE; \
e6af3a53 646 /* Now write out reloc info, followed by syms and strings. */ \
252b5132 647 \
7920ce38 648 if (bfd_get_outsymbols (abfd) != NULL \
252b5132
RH		 649 && bfd_get_symcount (abfd) != 0) \
650 { \
dc810e39 651 if (bfd_seek (abfd, (file_ptr) (N_SYMOFF(*execp)), SEEK_SET) != 0)\
b34976b6 652 return FALSE; \
252b5132 653 \
7920ce38 654 if (! NAME (aout, write_syms) (abfd)) \
b34976b6 655 return FALSE; \
252b5132
RH		 656 } \
657 \
aca305d9 658 if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (*execp)), SEEK_SET) != 0) \
b34976b6 659 return FALSE; \
7920ce38 660 if (!NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd))) \
b34976b6 661 return FALSE; \
252b5132 662 \
aca305d9 663 if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp)), SEEK_SET) != 0) \
b34976b6 664 return FALSE; \
7920ce38 665 if (!NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd))) \
b34976b6 666 return FALSE; \
dc810e39 667 }
252b5132
RH		 668#endif
669
e6af3a53
NC		 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 + \
eea6121a
AM		 685 obj_textsec (abfd)->size) \
686 && ((sec)->vma + (sec)->size) <= obj_datasec (abfd)->vma \
e6af3a53
NC		 687 && ((abfd)->flags & D_PAGED) != 0)
688
252b5132 689#endif /* ! defined (LIBAOUT_H) */
GDB Binutils - Deliverables
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