1 /* 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) */ 690