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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.
b3adc24a 2 Copyright (C) 1990-2020 Free Software Foundation, Inc.
252b5132
RH		 3 Written by Cygnus Support.
4
e6af3a53 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
e6af3a53
NC		 7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
e6af3a53 10 (at your option) any later version.
252b5132 11
e6af3a53
NC		 12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
252b5132 16
e6af3a53
NC		 17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
cd123cb7
NC		 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
252b5132
RH		 21
22#ifndef LIBAOUT_H
23#define LIBAOUT_H
24
25/* We try to encapsulate the differences in the various a.out file
26 variants in a few routines, and otherwise share large masses of code.
27 This means we only have to fix bugs in one place, most of the time. */
28
29#include "bfdlink.h"
30
edeb6e24 31/* Macros for accessing components in an aout header. */
dc810e39 32
7920ce38
NC		 33#define H_PUT_64 bfd_h_put_64
34#define H_PUT_32 bfd_h_put_32
35#define H_PUT_16 bfd_h_put_16
36#define H_PUT_8 bfd_h_put_8
edeb6e24
AM		 37#define H_PUT_S64 bfd_h_put_signed_64
38#define H_PUT_S32 bfd_h_put_signed_32
39#define H_PUT_S16 bfd_h_put_signed_16
7920ce38
NC		 40#define H_PUT_S8 bfd_h_put_signed_8
41#define H_GET_64 bfd_h_get_64
42#define H_GET_32 bfd_h_get_32
43#define H_GET_16 bfd_h_get_16
44#define H_GET_8 bfd_h_get_8
edeb6e24
AM		 45#define H_GET_S64 bfd_h_get_signed_64
46#define H_GET_S32 bfd_h_get_signed_32
47#define H_GET_S16 bfd_h_get_signed_16
7920ce38 48#define H_GET_S8 bfd_h_get_signed_8
dc810e39 49
252b5132
RH		 50/* Parameterize the a.out code based on whether it is being built
51 for a 32-bit architecture or a 64-bit architecture. */
e43d48cc
AM		 52/* Do not "beautify" the CONCAT* macro args. Traditional C will not
53 remove whitespace added here, and thus will fail to concatenate
54 the tokens. */
252b5132 55#if ARCH_SIZE==64
7920ce38 56#define GET_WORD H_GET_64
dc810e39
AM		 57#define GET_SWORD H_GET_S64
58#define GET_MAGIC H_GET_32
7920ce38 59#define PUT_WORD H_PUT_64
dc810e39 60#define PUT_MAGIC H_PUT_32
252b5132 61#ifndef NAME
e43d48cc 62#define NAME(x,y) CONCAT3 (x,_64_,y)
252b5132 63#endif
e43d48cc 64#define JNAME(x) CONCAT2 (x,_64)
252b5132 65#define BYTES_IN_WORD 8
e135f41b
NC		 66#else
67#if ARCH_SIZE==16
7920ce38 68#define GET_WORD H_GET_16
dc810e39
AM		 69#define GET_SWORD H_GET_S16
70#define GET_MAGIC H_GET_16
7920ce38 71#define PUT_WORD H_PUT_16
dc810e39 72#define PUT_MAGIC H_PUT_16
e135f41b 73#ifndef NAME
e43d48cc 74#define NAME(x,y) CONCAT3 (x,_16_,y)
e135f41b 75#endif
e43d48cc 76#define JNAME(x) CONCAT2 (x,_16)
e135f41b 77#define BYTES_IN_WORD 2
252b5132 78#else /* ARCH_SIZE == 32 */
7920ce38 79#define GET_WORD H_GET_32
dc810e39
AM		 80#define GET_SWORD H_GET_S32
81#define GET_MAGIC H_GET_32
7920ce38 82#define PUT_WORD H_PUT_32
dc810e39 83#define PUT_MAGIC H_PUT_32
252b5132 84#ifndef NAME
e43d48cc 85#define NAME(x,y) CONCAT3 (x,_32_,y)
252b5132 86#endif
e43d48cc 87#define JNAME(x) CONCAT2 (x,_32)
252b5132
RH		 88#define BYTES_IN_WORD 4
89#endif /* ARCH_SIZE==32 */
e135f41b 90#endif /* ARCH_SIZE==64 */
252b5132
RH		 91
92/* Declare at file level, since used in parameter lists, which have
93 weird scope. */
94struct external_exec;
95struct external_nlist;
96struct reloc_ext_external;
97struct reloc_std_external;
98\f
99/* a.out backend linker hash table entries. */
100
101struct aout_link_hash_entry
102{
103 struct bfd_link_hash_entry root;
104 /* Whether this symbol has been written out. */
b34976b6 105 bfd_boolean written;
252b5132
RH		 106 /* Symbol index in output file. */
107 int indx;
108};
109
110/* a.out backend linker hash table. */
111
112struct aout_link_hash_table
113{
114 struct bfd_link_hash_table root;
115};
116
117/* Look up an entry in an a.out link hash table. */
118
119#define aout_link_hash_lookup(table, string, create, copy, follow) \
120 ((struct aout_link_hash_entry *) \
121 bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow)))
122
123/* Traverse an a.out link hash table. */
124
125#define aout_link_hash_traverse(table, func, info) \
126 (bfd_link_hash_traverse \
127 (&(table)->root, \
7920ce38 128 (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
252b5132
RH		 129 (info)))
130
131/* Get the a.out link hash table from the info structure. This is
132 just a cast. */
133
134#define aout_hash_table(p) ((struct aout_link_hash_table *) ((p)->hash))
135\f
136/* Back-end information for various a.out targets. */
137struct aout_backend_data
138{
139 /* Are ZMAGIC files mapped contiguously? If so, the text section may
140 need more padding, if the segment size (granularity for memory access
141 control) is larger than the page size. */
142 unsigned char zmagic_mapped_contiguous;
143 /* If this flag is set, ZMAGIC/NMAGIC file headers get mapped in with the
144 text section, which starts immediately after the file header.
145 If not, the text section starts on the next page. */
146 unsigned char text_includes_header;
147
148 /* If this flag is set, then if the entry address is not in the
149 first SEGMENT_SIZE bytes of the text section, it is taken to be
150 the address of the start of the text section. This can be useful
151 for kernels. */
152 unsigned char entry_is_text_address;
153
154 /* The value to pass to N_SET_FLAGS. */
155 unsigned char exec_hdr_flags;
156
157 /* If the text section VMA isn't specified, and we need an absolute
158 address, use this as the default. If we're producing a relocatable
159 file, zero is always used. */
160 /* ?? Perhaps a callback would be a better choice? Will this do anything
161 reasonable for a format that handles multiple CPUs with different
162 load addresses for each? */
163 bfd_vma default_text_vma;
164
165 /* Callback for setting the page and segment sizes, if they can't be
166 trivially determined from the architecture. */
7920ce38 167 bfd_boolean (*set_sizes) (bfd *);
252b5132
RH		 168
169 /* zmagic files only. For go32, the length of the exec header contributes
170 to the size of the text section in the file for alignment purposes but
171 does *not* get counted in the length of the text section. */
172 unsigned char exec_header_not_counted;
173
174 /* Callback from the add symbols phase of the linker code to handle
175 a dynamic object. */
b34976b6 176 bfd_boolean (*add_dynamic_symbols)
7920ce38
NC		 177 (bfd *, struct bfd_link_info *, struct external_nlist **,
178 bfd_size_type *, char **);
252b5132
RH		 179
180 /* Callback from the add symbols phase of the linker code to handle
181 adding a single symbol to the global linker hash table. */
b34976b6 182 bfd_boolean (*add_one_symbol)
7920ce38
NC		 183 (struct bfd_link_info *, bfd *, const char *, flagword,
184 asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
185 struct bfd_link_hash_entry **);
252b5132
RH		 186
187 /* Called to handle linking a dynamic object. */
b34976b6 188 bfd_boolean (*link_dynamic_object)
7920ce38 189 (struct bfd_link_info *, bfd *);
252b5132
RH		 190
191 /* Called for each global symbol being written out by the linker.
192 This should write out the dynamic symbol information. */
b34976b6 193 bfd_boolean (*write_dynamic_symbol)
7920ce38 194 (bfd *, struct bfd_link_info *, struct aout_link_hash_entry *);
252b5132
RH		 195
196 /* If this callback is not NULL, the linker calls it for each reloc.
197 RELOC is a pointer to the unswapped reloc. If *SKIP is set to
b34976b6 198 TRUE, the reloc will be skipped. *RELOCATION may be changed to
252b5132 199 change the effects of the relocation. */
b34976b6 200 bfd_boolean (*check_dynamic_reloc)
7920ce38
NC		 201 (struct bfd_link_info *info, bfd *input_bfd,
202 asection *input_section, struct aout_link_hash_entry *h,
203 void * reloc, bfd_byte *contents, bfd_boolean *skip,
204 bfd_vma *relocation);
252b5132
RH		 205
206 /* Called at the end of a link to finish up any dynamic linking
207 information. */
7920ce38 208 bfd_boolean (*finish_dynamic_link) (bfd *, struct bfd_link_info *);
252b5132
RH		 209};
210#define aout_backend_info(abfd) \
dc810e39 211 ((const struct aout_backend_data *)((abfd)->xvec->backend_data))
252b5132
RH		 212
213/* This is the layout in memory of a "struct exec" while we process it.
214 All 'lengths' are given as a number of bytes.
215 All 'alignments' are for relinkable files only; an alignment of
216 'n' indicates the corresponding segment must begin at an
217 address that is a multiple of (2**n). */
218
219struct internal_exec
220{
aca305d9
NC		 221 long a_info; /* Magic number and flags, packed. */
222 bfd_vma a_text; /* Length of text, in bytes. */
223 bfd_vma a_data; /* Length of data, in bytes. */
224 bfd_vma a_bss; /* Length of uninitialized data area in mem. */
225 bfd_vma a_syms; /* Length of symbol table data in file. */
226 bfd_vma a_entry; /* Start address. */
227 bfd_vma a_trsize; /* Length of text's relocation info, in bytes. */
228 bfd_vma a_drsize; /* Length of data's relocation info, in bytes. */
229 /* Added for i960 */
230 bfd_vma a_tload; /* Text runtime load address. */
231 bfd_vma a_dload; /* Data runtime load address. */
232 unsigned char a_talign; /* Alignment of text segment. */
233 unsigned char a_dalign; /* Alignment of data segment. */
234 unsigned char a_balign; /* Alignment of bss segment. */
07d6d2b8 235 char a_relaxable; /* Enough info for linker relax. */
252b5132
RH		 236};
237
dc810e39 238/* Magic number is written
07d6d2b8 239 < MSB >
aca305d9 240 3130292827262524232221201918171615141312111009080706050403020100
07d6d2b8 241 < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
aca305d9 242
252b5132 243/* Magic number for NetBSD is
07d6d2b8 244 <MSB >
aca305d9 245 3130292827262524232221201918171615141312111009080706050403020100
07d6d2b8 246 < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
252b5132 247
aca305d9
NC		 248enum machine_type
249{
252b5132
RH		 250 M_UNKNOWN = 0,
251 M_68010 = 1,
252 M_68020 = 2,
253 M_SPARC = 3,
e6af3a53
NC		 254 /* Skip a bunch so we don't run into any of SUN's numbers. */
255 /* Make these up for the ns32k. */
aca305d9
NC		 256 M_NS32032 = (64), /* NS32032 running ? */
257 M_NS32532 = (64 + 5), /* NS32532 running mach. */
252b5132 258 M_386 = 100,
07d6d2b8 259 M_29K = 101, /* AMD 29000. */
aca305d9
NC		 260 M_386_DYNIX = 102, /* Sequent running dynix. */
261 M_ARM = 103, /* Advanced Risc Machines ARM. */
262 M_SPARCLET = 131, /* SPARClet = M_SPARC + 128. */
263 M_386_NETBSD = 134, /* NetBSD/i386 binary. */
264 M_68K_NETBSD = 135, /* NetBSD/m68k binary. */
265 M_68K4K_NETBSD = 136, /* NetBSD/m68k4k binary. */
266 M_532_NETBSD = 137, /* NetBSD/ns32k binary. */
267 M_SPARC_NETBSD = 138, /* NetBSD/sparc binary. */
268 M_PMAX_NETBSD = 139, /* NetBSD/pmax (MIPS little-endian) binary. */
269 M_VAX_NETBSD = 140, /* NetBSD/vax binary. */
270 M_ALPHA_NETBSD = 141, /* NetBSD/alpha binary. */
271 M_ARM6_NETBSD = 143, /* NetBSD/arm32 binary. */
272 M_SPARCLET_1 = 147, /* 0x93, reserved. */
7f919c84 273 M_POWERPC_NETBSD = 149, /* NetBSD/powerpc (big-endian) binary. */
aca305d9 274 M_VAX4K_NETBSD = 150, /* NetBSD/vax 4K pages binary. */
07d6d2b8
AM		 275 M_MIPS1 = 151, /* MIPS R2000/R3000 binary. */
276 M_MIPS2 = 152, /* MIPS R4000/R6000 binary. */
8377c19c
MK		 277 M_88K_OPENBSD = 153, /* OpenBSD/m88k binary. */
278 M_HPPA_OPENBSD = 154, /* OpenBSD/hppa binary. */
aca305d9
NC		 279 M_SPARC64_NETBSD = 156, /* NetBSD/sparc64 binary. */
280 M_X86_64_NETBSD = 157, /* NetBSD/amd64 binary. */
281 M_SPARCLET_2 = 163, /* 0xa3, reserved. */
282 M_SPARCLET_3 = 179, /* 0xb3, reserved. */
283 M_SPARCLET_4 = 195, /* 0xc3, reserved. */
284 M_HP200 = 200, /* HP 200 (68010) BSD binary. */
285 M_HP300 = (300 % 256), /* HP 300 (68020+68881) BSD binary. */
286 M_HPUX = (0x20c % 256), /* HP 200/300 HPUX binary. */
287 M_SPARCLET_5 = 211, /* 0xd3, reserved. */
288 M_SPARCLET_6 = 227, /* 0xe3, reserved. */
289/*M_SPARCLET_7 = 243 / * 0xf3, reserved. */
06c15ad7 290 M_SPARCLITE_LE = 243,
aca305d9 291 M_CRIS = 255 /* Axis CRIS binary. */
252b5132
RH		 292};
293
bbb1afc8 294#define N_DYNAMIC(execp) ((execp)->a_info & 0x80000000)
252b5132
RH		 295
296#ifndef N_MAGIC
bbb1afc8 297# define N_MAGIC(execp) ((execp)->a_info & 0xffff)
252b5132
RH		 298#endif
299
300#ifndef N_MACHTYPE
bbb1afc8 301# define N_MACHTYPE(execp) ((enum machine_type)(((execp)->a_info >> 16) & 0xff))
252b5132
RH		 302#endif
303
304#ifndef N_FLAGS
bbb1afc8 305# define N_FLAGS(execp) (((execp)->a_info >> 24) & 0xff)
252b5132
RH		 306#endif
307
308#ifndef N_SET_INFO
bbb1afc8
AM		 309# define N_SET_INFO(execp, magic, type, flags) \
310((execp)->a_info = ((magic) & 0xffff) \
252b5132 311 | (((int)(type) & 0xff) << 16) \
13c9c485 312 | (((flags) & 0xffu) << 24))
252b5132
RH		 313#endif
314
315#ifndef N_SET_DYNAMIC
bbb1afc8
AM		 316# define N_SET_DYNAMIC(execp, dynamic) \
317((execp)->a_info = (dynamic) ? (long) ((execp)->a_info | 0x80000000) : \
318((execp)->a_info & 0x7fffffff))
252b5132
RH		 319#endif
320
321#ifndef N_SET_MAGIC
bbb1afc8
AM		 322# define N_SET_MAGIC(execp, magic) \
323((execp)->a_info = (((execp)->a_info & 0xffff0000) | ((magic) & 0xffff)))
252b5132
RH		 324#endif
325
326#ifndef N_SET_MACHTYPE
bbb1afc8
AM		 327# define N_SET_MACHTYPE(execp, machtype) \
328((execp)->a_info = \
329 ((execp)->a_info & 0xff00ffff) | ((((int) (machtype)) &0xff) << 16))
252b5132
RH		 330#endif
331
332#ifndef N_SET_FLAGS
bbb1afc8
AM		 333# define N_SET_FLAGS(execp, flags) \
334((execp)->a_info = \
13c9c485 335 ((execp)->a_info & 0x00ffffff) | (((flags) & 0xffu) << 24))
252b5132
RH		 336#endif
337
aca305d9
NC		 338typedef struct aout_symbol
339{
252b5132
RH		 340 asymbol symbol;
341 short desc;
342 char other;
343 unsigned char type;
344} aout_symbol_type;
345
346/* The `tdata' struct for all a.out-like object file formats.
347 Various things depend on this struct being around any time an a.out
348 file is being handled. An example is dbxread.c in GDB. */
349
a50b1753
NC		 350enum aout_subformat {
351 default_format = 0,
dc12032b 352 /* Used on HP 9000/300 running HP/UX. */
a50b1753
NC		 353 gnu_encap_format,
354 /* Used on Linux, 386BSD, etc. See include/aout/aout64.h. */
355 q_magic_format
356};
357
358enum aout_magic {
359 undecided_magic = 0,
360 z_magic,
361 o_magic,
362 n_magic
363};
364
aca305d9
NC		 365struct aoutdata
366{
367 struct internal_exec *hdr; /* Exec file header. */
368 aout_symbol_type *symbols; /* Symtab for input bfd. */
dc810e39 369
e6af3a53 370 /* For ease, we do this. */
252b5132
RH		 371 asection *textsec;
372 asection *datasec;
373 asection *bsssec;
374
375 /* We remember these offsets so that after check_file_format, we have
376 no dependencies on the particular format of the exec_hdr. */
377 file_ptr sym_filepos;
378 file_ptr str_filepos;
379
e6af3a53 380 /* Size of a relocation entry in external form. */
252b5132
RH		 381 unsigned reloc_entry_size;
382
e6af3a53 383 /* Size of a symbol table entry in external form. */
252b5132
RH		 384 unsigned symbol_entry_size;
385
e6af3a53 386 /* Page size - needed for alignment of demand paged files. */
252b5132
RH		 387 unsigned long page_size;
388
e6af3a53 389 /* Segment size - needed for alignment of demand paged files. */
252b5132
RH		 390 unsigned long segment_size;
391
392 /* Zmagic disk block size - need to align the start of the text
393 section in ZMAGIC binaries. Normally the same as page_size. */
394 unsigned long zmagic_disk_block_size;
395
396 unsigned exec_bytes_size;
397 unsigned vma_adjusted : 1;
398
e6af3a53 399 /* Used when a bfd supports several highly similar formats. */
a50b1753
NC		 400 enum aout_subformat subformat;
401
402 enum aout_magic magic;
252b5132
RH		 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
07d6d2b8
AM		 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)
aca305d9 443#define obj_aout_external_sym_count(bfd) (adata (bfd).external_sym_count)
07d6d2b8
AM		 444#define obj_aout_sym_window(bfd) (adata (bfd).sym_window)
445#define obj_aout_external_strings(bfd) (adata (bfd).external_strings)
aca305d9 446#define obj_aout_external_string_size(bfd) (adata (bfd).external_string_size)
07d6d2b8
AM		 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 553extern bfd_boolean NAME (aout, find_nearest_line)
fb167eb2
AM		 554 (bfd *, asymbol **, asection *, bfd_vma,
555 const char **, const char **, unsigned int *, 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 566extern bfd_boolean NAME (aout, adjust_sizes_and_vmas)
3a8c4a5b 567 (bfd *);
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 619#ifndef aout_32_bfd_is_target_special_symbol
d00dd7dc 620#define aout_32_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
3c9458e9
NC		 621#endif
622
252b5132
RH		 623#ifndef WRITE_HEADERS
624#define WRITE_HEADERS(abfd, execp) \
625 { \
252b5132 626 if (adata(abfd).magic == undecided_magic) \
3a8c4a5b 627 NAME (aout, adjust_sizes_and_vmas) (abfd); \
07d6d2b8 628 \
252b5132
RH		 629 execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \
630 execp->a_entry = bfd_get_start_address (abfd); \
07d6d2b8 631 \
252b5132
RH		 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. */ \
07d6d2b8 643 \
7920ce38 644 if (bfd_get_outsymbols (abfd) != NULL \
07d6d2b8 645 && bfd_get_symcount (abfd) != 0) \
252b5132 646 { \
bbb1afc8 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 \
bbb1afc8 654 if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (execp)), SEEK_SET) != 0) \
07d6d2b8
AM		 655 return FALSE; \
656 if (!NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd))) \
657 return FALSE; \
252b5132 658 \
bbb1afc8 659 if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (execp)), SEEK_SET) != 0) \
07d6d2b8
AM		 660 return FALSE; \
661 if (!NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd))) \
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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