1 /* Internal format of XCOFF object file data structures for BFD. 2 3 Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 4 2009, 2010 Free Software Foundation, Inc. 5 Written by Ian Lance Taylor <ian@cygnus.com>, 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 _INTERNAL_XCOFF_H 25 #define _INTERNAL_XCOFF_H 26 27 /* XCOFF specific f_flags. */ 28 29 /* File was profiled with fdpr. */ 30 #define F_FDPR_PROF 0x0010 31 32 /* File was reordered with fdpr. */ 33 #define F_FDPR_OPTI 0x0020 34 35 /* File use very large program support. */ 36 #define F_DSA 0x0040 37 38 /* One aux header specifying medium page sizes is non-zero. */ 39 #define F_VARPG 0x0100 40 41 /* Read/write sections are non-executable. */ 42 #define F_NONEXEC 0x8000 43 44 /* Linker */ 45 46 /* Names of "special" sections. */ 47 #define _TEXT ".text" 48 #define _DATA ".data" 49 #define _BSS ".bss" 50 #define _PAD ".pad" 51 #define _LOADER ".loader" 52 #define _EXCEPT ".except" 53 #define _TYPCHK ".typchk" 54 55 /* XCOFF uses special .dwXXX sections with the type STYP_DWARF. */ 56 #define STYP_DWARF 0x0010 57 58 /* High-order 16-bits dwarf subtypes. */ 59 #define SSUBTYP_DWINFO 0x10000 60 #define SSUBTYP_DWLINE 0x20000 61 #define SSUBTYP_DWPBNMS 0x30000 62 #define SSUBTYP_DWPBTYP 0x40000 63 #define SSUBTYP_DWARNGE 0x50000 64 #define SSUBTYP_DWABREV 0x60000 65 #define SSUBTYP_DWSTR 0x70000 66 #define SSUBTYP_DWRNGES 0x80000 67 68 /* XCOFF uses a special .loader section with type STYP_LOADER. */ 69 #define STYP_LOADER 0x1000 70 71 /* Specifies an exception section. A section of this type provides 72 information to identify the reason that a trap or ececptin occured within 73 and executable object program */ 74 #define STYP_EXCEPT 0x0100 75 76 /* Specifies an initialized thread-local data section. */ 77 #define STYP_TDATA 0x0400 78 79 /* Specifies an uninitialized thread-local data section. */ 80 #define STYP_TBSS 0x0800 81 82 /* XCOFF uses a special .debug section with type STYP_DEBUG. */ 83 #define STYP_DEBUG 0x2000 84 85 /* Specifies a type check section. A section of this type contains parameter 86 argument type check strings used by the AIX binder. */ 87 #define STYP_TYPCHK 0x4000 88 89 /* XCOFF handles line number or relocation overflow by creating 90 another section header with STYP_OVRFLO set. */ 91 #define STYP_OVRFLO 0x8000 92 93 #define RS6K_AOUTHDR_OMAGIC 0x0107 /* old: text & data writeable */ 94 #define RS6K_AOUTHDR_NMAGIC 0x0108 /* new: text r/o, data r/w */ 95 #define RS6K_AOUTHDR_ZMAGIC 0x010B /* paged: text r/o, both page-aligned */ 96 97 /* XCOFF relocation types. 98 The relocations are described in the function 99 xcoff[64]_ppc_relocate_section in coff64-rs6000.c and coff-rs6000.c */ 100 101 #define R_POS (0x00) 102 #define R_NEG (0x01) 103 #define R_REL (0x02) 104 #define R_TOC (0x03) 105 #define R_RTB (0x04) 106 #define R_GL (0x05) 107 #define R_TCL (0x06) 108 #define R_BA (0x08) 109 #define R_BR (0x0a) 110 #define R_RL (0x0c) 111 #define R_RLA (0x0d) 112 #define R_REF (0x0f) 113 #define R_TRL (0x12) 114 #define R_TRLA (0x13) 115 #define R_RRTBI (0x14) 116 #define R_RRTBA (0x15) 117 #define R_CAI (0x16) 118 #define R_CREL (0x17) 119 #define R_RBA (0x18) 120 #define R_RBAC (0x19) 121 #define R_RBR (0x1a) 122 #define R_RBRC (0x1b) 123 #define R_TLS (0x20) 124 #define R_TLS_IE (0x21) 125 #define R_TLS_LD (0x22) 126 #define R_TLS_LE (0x23) 127 #define R_TLSM (0x24) 128 #define R_TLSML (0x25) 129 #define R_TOCU (0x30) 130 #define R_TOCL (0x31) 131 132 /* Storage class #defines, from /usr/include/storclass.h that are not already 133 defined in internal.h */ 134 135 /* Comment string in .info section */ 136 #define C_INFO 110 137 138 /* Dwarf symbol. */ 139 #define C_DWARF 112 140 141 /* Auxillary Symbol Entries */ 142 143 /* x_smtyp values: */ 144 #define SMTYP_ALIGN(x) ((x) >> 3) /* log2 of alignment */ 145 #define SMTYP_SMTYP(x) ((x) & 0x7) /* symbol type */ 146 /* Symbol type values: */ 147 #define XTY_ER 0 /* External reference */ 148 #define XTY_SD 1 /* Csect definition */ 149 #define XTY_LD 2 /* Label definition */ 150 #define XTY_CM 3 /* .BSS */ 151 #define XTY_EM 4 /* Error message */ 152 #define XTY_US 5 /* "Reserved for internal use" */ 153 154 /* x_smclas values: */ 155 #define XMC_PR 0 /* Read-only program code */ 156 #define XMC_RO 1 /* Read-only constant */ 157 #define XMC_DB 2 /* Read-only debug dictionary table */ 158 #define XMC_TC 3 /* Read-write general TOC entry */ 159 #define XMC_UA 4 /* Read-write unclassified */ 160 #define XMC_RW 5 /* Read-write data */ 161 #define XMC_GL 6 /* Read-only global linkage */ 162 #define XMC_XO 7 /* Read-only extended operation */ 163 #define XMC_SV 8 /* Read-only supervisor call */ 164 #define XMC_BS 9 /* Read-write BSS */ 165 #define XMC_DS 10 /* Read-write descriptor csect */ 166 #define XMC_UC 11 /* Read-write unnamed Fortran common */ 167 #define XMC_TI 12 /* Read-only traceback index csect */ 168 #define XMC_TB 13 /* Read-only traceback table csect */ 169 /* 14 ??? */ 170 #define XMC_TC0 15 /* Read-write TOC anchor */ 171 #define XMC_TD 16 /* Read-write data in TOC */ 172 #define XMC_SV64 17 /* Read-only 64 bit supervisor call */ 173 #define XMC_SV3264 18 /* Read-only 32 or 64 bit supervisor call */ 174 /* 19 ??? */ 175 #define XMC_TL 20 /* Read-write initialized TLS data */ 176 #define XMC_TU 21 /* Read-write uninitialized TLS data */ 177 #define XMC_TE 22 /* Same as XMC_TC but mapped after it */ 178 179 /* The ldhdr structure. This appears at the start of the .loader 180 section. */ 181 182 struct internal_ldhdr 183 { 184 /* The version number: 185 1 : 32 bit 186 2 : 64 bit */ 187 unsigned long l_version; 188 189 /* The number of symbol table entries. */ 190 bfd_size_type l_nsyms; 191 192 /* The number of relocation table entries. */ 193 bfd_size_type l_nreloc; 194 195 /* The length of the import file string table. */ 196 bfd_size_type l_istlen; 197 198 /* The number of import files. */ 199 bfd_size_type l_nimpid; 200 201 /* The offset from the start of the .loader section to the first 202 entry in the import file table. */ 203 bfd_size_type l_impoff; 204 205 /* The length of the string table. */ 206 bfd_size_type l_stlen; 207 208 /* The offset from the start of the .loader section to the first 209 entry in the string table. */ 210 bfd_size_type l_stoff; 211 212 /* The offset to start of the symbol table, only in XCOFF64 */ 213 bfd_vma l_symoff; 214 215 /* The offset to the start of the relocation table, only in XCOFF64 */ 216 bfd_vma l_rldoff; 217 }; 218 219 /* The ldsym structure. This is used to represent a symbol in the 220 .loader section. */ 221 222 struct internal_ldsym 223 { 224 union 225 { 226 /* The symbol name if <= SYMNMLEN characters. */ 227 char _l_name[SYMNMLEN]; 228 struct 229 { 230 /* Zero if the symbol name is more than SYMNMLEN characters. */ 231 long _l_zeroes; 232 233 /* The offset in the string table if the symbol name is more 234 than SYMNMLEN characters. */ 235 long _l_offset; 236 } 237 _l_l; 238 } 239 _l; 240 241 /* The symbol value. */ 242 bfd_vma l_value; 243 244 /* The symbol section number. */ 245 short l_scnum; 246 247 /* The symbol type and flags. */ 248 char l_smtype; 249 250 /* The symbol storage class. */ 251 char l_smclas; 252 253 /* The import file ID. */ 254 bfd_size_type l_ifile; 255 256 /* Offset to the parameter type check string. */ 257 bfd_size_type l_parm; 258 }; 259 260 /* These flags are for the l_smtype field (the lower three bits are an 261 XTY_* value). */ 262 263 /* Imported symbol. */ 264 #define L_IMPORT (0x40) 265 /* Entry point. */ 266 #define L_ENTRY (0x20) 267 /* Exported symbol. */ 268 #define L_EXPORT (0x10) 269 /* Weak symbol. */ 270 #define L_WEAK (0x08) 271 272 /* The ldrel structure. This is used to represent a reloc in the 273 .loader section. */ 274 275 struct internal_ldrel 276 { 277 /* The reloc address. */ 278 bfd_vma l_vaddr; 279 280 /* The symbol table index in the .loader section symbol table. */ 281 bfd_size_type l_symndx; 282 283 /* The relocation type and size. */ 284 short l_rtype; 285 286 /* The section number this relocation applies to. */ 287 short l_rsecnm; 288 }; 289 290 /* An entry in the XCOFF linker hash table. */ 291 struct xcoff_link_hash_entry 292 { 293 struct bfd_link_hash_entry root; 294 295 /* Symbol index in output file. Set to -1 initially. Set to -2 if 296 there is a reloc against this symbol. */ 297 long indx; 298 299 /* If we have created a TOC entry for this symbol, this is the .tc 300 section which holds it. */ 301 asection *toc_section; 302 303 union 304 { 305 /* If we have created a TOC entry (the XCOFF_SET_TOC flag is 306 set), this is the offset in toc_section. */ 307 bfd_vma toc_offset; 308 309 /* If the TOC entry comes from an input file, this is set to the 310 symbol index of the C_HIDEXT XMC_TC or XMC_TD symbol. */ 311 long toc_indx; 312 } 313 u; 314 315 /* If this symbol is a function entry point which is called, this 316 field holds a pointer to the function descriptor. If this symbol 317 is a function descriptor, this field holds a pointer to the 318 function entry point. */ 319 struct xcoff_link_hash_entry *descriptor; 320 321 /* The .loader symbol table entry, if there is one. */ 322 struct internal_ldsym *ldsym; 323 324 /* If XCOFF_BUILT_LDSYM is set, this is the .loader symbol table 325 index. If XCOFF_BUILD_LDSYM is clear, and XCOFF_IMPORT is set, 326 this is the l_ifile value. */ 327 long ldindx; 328 329 /* Some linker flags. */ 330 unsigned long flags; 331 332 /* The storage mapping class. */ 333 unsigned char smclas; 334 }; 335 336 /* Flags for xcoff_link_hash_entry. */ 337 338 /* Symbol is referenced by a regular object. */ 339 #define XCOFF_REF_REGULAR 0x00000001 340 /* Symbol is defined by a regular object. */ 341 #define XCOFF_DEF_REGULAR 0x00000002 342 /* Symbol is defined by a dynamic object. */ 343 #define XCOFF_DEF_DYNAMIC 0x00000004 344 /* Symbol is used in a reloc being copied into the .loader section. */ 345 #define XCOFF_LDREL 0x00000008 346 /* Symbol is the entry point. */ 347 #define XCOFF_ENTRY 0x00000010 348 /* Symbol is for a function and is the target of a relocation. 349 The relocation may or may not be a branch-type relocation. */ 350 #define XCOFF_CALLED 0x00000020 351 /* Symbol needs the TOC entry filled in. */ 352 #define XCOFF_SET_TOC 0x00000040 353 /* Symbol is implicitly or explicitly imported. */ 354 #define XCOFF_IMPORT 0x00000080 355 /* Symbol is explicitly exported. */ 356 #define XCOFF_EXPORT 0x00000100 357 /* Symbol has been processed by xcoff_build_ldsyms. */ 358 #define XCOFF_BUILT_LDSYM 0x00000200 359 /* Symbol is mentioned by a section which was not garbage collected. */ 360 #define XCOFF_MARK 0x00000400 361 /* Symbol size is recorded in size_list list from hash table. */ 362 #define XCOFF_HAS_SIZE 0x00000800 363 /* Symbol is a function descriptor. */ 364 #define XCOFF_DESCRIPTOR 0x00001000 365 /* Multiple definitions have been for the symbol. */ 366 #define XCOFF_MULTIPLY_DEFINED 0x00002000 367 /* Symbol is the __rtinit symbol. */ 368 #define XCOFF_RTINIT 0x00004000 369 /* Symbol is an imported 32 bit syscall. */ 370 #define XCOFF_SYSCALL32 0x00008000 371 /* Symbol is an imported 64 bit syscall. */ 372 #define XCOFF_SYSCALL64 0x00010000 373 /* Symbol was not explicitly defined by the time it was marked. */ 374 #define XCOFF_WAS_UNDEFINED 0x00020000 375 /* We have assigned an output XCOFF entry to this symbol. */ 376 #define XCOFF_ALLOCATED 0x00040000 377 378 /* The XCOFF linker hash table. */ 379 380 #define XCOFF_NUMBER_OF_SPECIAL_SECTIONS 6 381 #define XCOFF_SPECIAL_SECTION_TEXT 0 382 #define XCOFF_SPECIAL_SECTION_ETEXT 1 383 #define XCOFF_SPECIAL_SECTION_DATA 2 384 #define XCOFF_SPECIAL_SECTION_EDATA 3 385 #define XCOFF_SPECIAL_SECTION_END 4 386 #define XCOFF_SPECIAL_SECTION_END2 5 387 388 /* These flags indicate which of -bexpall and -bexpfull are in effect. */ 389 #define XCOFF_EXPALL 1 390 #define XCOFF_EXPFULL 2 391 392 /* This structure is used to pass information through 393 xcoff_link_hash_traverse. */ 394 395 struct xcoff_loader_info 396 { 397 /* Set if a problem occurred. */ 398 bfd_boolean failed; 399 400 /* Output BFD. */ 401 bfd *output_bfd; 402 403 /* Link information structure. */ 404 struct bfd_link_info *info; 405 406 /* A mask of XCOFF_EXPALL and XCOFF_EXPFULL flags. */ 407 unsigned int auto_export_flags; 408 409 /* Number of ldsym structures. */ 410 size_t ldsym_count; 411 412 /* Size of string table. */ 413 size_t string_size; 414 415 /* String table. */ 416 char *strings; 417 418 /* Allocated size of string table. */ 419 size_t string_alc; 420 }; 421 422 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value 423 from smaller values. Start with zero, widen, *then* decrement. */ 424 #define MINUS_ONE (((bfd_vma) 0) - 1) 425 426 /* __rtinit, from /usr/include/rtinit.h. */ 427 struct __rtinit 428 { 429 /* Pointer to runtime linker. 430 XXX: Is the parameter really void? */ 431 int (*rtl) (void); 432 433 /* Offset to array of init functions, 0 if none. */ 434 int init_offset; 435 436 /* Offset to array of fini functions, 0 if none. */ 437 int fini_offset; 438 439 /* Size of __RTINIT_DESCRIPTOR. This value should be used instead of 440 sizeof(__RTINIT_DESCRIPTOR). */ 441 int __rtinit_descriptor_size; 442 }; 443 444 #define RTINIT_DESCRIPTOR_SIZE (12) 445 446 struct __rtinit_descriptor 447 { 448 /* Init/fini function. */ 449 int f; 450 451 /* Offset, relative to the start of the __rtinit symbol, to name of the 452 function. */ 453 454 int name_offset; 455 456 /* Flags */ 457 unsigned char flags; 458 }; 459 460 /* Archive */ 461 462 #define XCOFFARMAG "<aiaff>\012" 463 #define XCOFFARMAGBIG "<bigaf>\012" 464 #define SXCOFFARMAG 8 465 466 /* The size of the ascii archive elements */ 467 #define XCOFFARMAG_ELEMENT_SIZE 12 468 #define XCOFFARMAGBIG_ELEMENT_SIZE 20 469 470 /* This terminates an XCOFF archive member name. */ 471 472 #define XCOFFARFMAG "`\012" 473 #define SXCOFFARFMAG 2 474 475 /* XCOFF archives start with this (printable) structure. */ 476 477 struct xcoff_ar_file_hdr 478 { 479 /* Magic string. */ 480 char magic[SXCOFFARMAG]; 481 482 /* Offset of the member table (decimal ASCII string). */ 483 char memoff[XCOFFARMAG_ELEMENT_SIZE]; 484 485 /* Offset of the global symbol table (decimal ASCII string). */ 486 char symoff[XCOFFARMAG_ELEMENT_SIZE]; 487 488 /* Offset of the first member in the archive (decimal ASCII string). */ 489 char firstmemoff[XCOFFARMAG_ELEMENT_SIZE]; 490 491 /* Offset of the last member in the archive (decimal ASCII string). */ 492 char lastmemoff[XCOFFARMAG_ELEMENT_SIZE]; 493 494 /* Offset of the first member on the free list (decimal ASCII 495 string). */ 496 char freeoff[XCOFFARMAG_ELEMENT_SIZE]; 497 }; 498 499 #define SIZEOF_AR_FILE_HDR (SXCOFFARMAG + 5 * XCOFFARMAG_ELEMENT_SIZE) 500 501 /* This is the equivalent data structure for the big archive format. */ 502 503 struct xcoff_ar_file_hdr_big 504 { 505 /* Magic string. */ 506 char magic[SXCOFFARMAG]; 507 508 /* Offset of the member table (decimal ASCII string). */ 509 char memoff[XCOFFARMAGBIG_ELEMENT_SIZE]; 510 511 /* Offset of the global symbol table for 32-bit objects (decimal ASCII 512 string). */ 513 char symoff[XCOFFARMAGBIG_ELEMENT_SIZE]; 514 515 /* Offset of the global symbol table for 64-bit objects (decimal ASCII 516 string). */ 517 char symoff64[XCOFFARMAGBIG_ELEMENT_SIZE]; 518 519 /* Offset of the first member in the archive (decimal ASCII string). */ 520 char firstmemoff[XCOFFARMAGBIG_ELEMENT_SIZE]; 521 522 /* Offset of the last member in the archive (decimal ASCII string). */ 523 char lastmemoff[XCOFFARMAGBIG_ELEMENT_SIZE]; 524 525 /* Offset of the first member on the free list (decimal ASCII 526 string). */ 527 char freeoff[XCOFFARMAGBIG_ELEMENT_SIZE]; 528 }; 529 530 #define SIZEOF_AR_FILE_HDR_BIG (SXCOFFARMAG + 6 * XCOFFARMAGBIG_ELEMENT_SIZE) 531 532 /* Each XCOFF archive member starts with this (printable) structure. */ 533 534 struct xcoff_ar_hdr 535 { 536 /* File size not including the header (decimal ASCII string). */ 537 char size[XCOFFARMAG_ELEMENT_SIZE]; 538 539 /* File offset of next archive member (decimal ASCII string). */ 540 char nextoff[XCOFFARMAG_ELEMENT_SIZE]; 541 542 /* File offset of previous archive member (decimal ASCII string). */ 543 char prevoff[XCOFFARMAG_ELEMENT_SIZE]; 544 545 /* File mtime (decimal ASCII string). */ 546 char date[12]; 547 548 /* File UID (decimal ASCII string). */ 549 char uid[12]; 550 551 /* File GID (decimal ASCII string). */ 552 char gid[12]; 553 554 /* File mode (octal ASCII string). */ 555 char mode[12]; 556 557 /* Length of file name (decimal ASCII string). */ 558 char namlen[4]; 559 560 /* This structure is followed by the file name. The length of the 561 name is given in the namlen field. If the length of the name is 562 odd, the name is followed by a null byte. The name and optional 563 null byte are followed by XCOFFARFMAG, which is not included in 564 namlen. The contents of the archive member follow; the number of 565 bytes is given in the size field. */ 566 }; 567 568 #define SIZEOF_AR_HDR (3 * XCOFFARMAG_ELEMENT_SIZE + 4 * 12 + 4) 569 570 /* The equivalent for the big archive format. */ 571 572 struct xcoff_ar_hdr_big 573 { 574 /* File size not including the header (decimal ASCII string). */ 575 char size[XCOFFARMAGBIG_ELEMENT_SIZE]; 576 577 /* File offset of next archive member (decimal ASCII string). */ 578 char nextoff[XCOFFARMAGBIG_ELEMENT_SIZE]; 579 580 /* File offset of previous archive member (decimal ASCII string). */ 581 char prevoff[XCOFFARMAGBIG_ELEMENT_SIZE]; 582 583 /* File mtime (decimal ASCII string). */ 584 char date[12]; 585 586 /* File UID (decimal ASCII string). */ 587 char uid[12]; 588 589 /* File GID (decimal ASCII string). */ 590 char gid[12]; 591 592 /* File mode (octal ASCII string). */ 593 char mode[12]; 594 595 /* Length of file name (decimal ASCII string). */ 596 char namlen[4]; 597 598 /* This structure is followed by the file name. The length of the 599 name is given in the namlen field. If the length of the name is 600 odd, the name is followed by a null byte. The name and optional 601 null byte are followed by XCOFFARFMAG, which is not included in 602 namlen. The contents of the archive member follow; the number of 603 bytes is given in the size field. */ 604 }; 605 606 #define SIZEOF_AR_HDR_BIG (3 * XCOFFARMAGBIG_ELEMENT_SIZE + 4 * 12 + 4) 607 608 /* We often have to distinguish between the old and big file format. 609 Make it a bit cleaner. We can use `xcoff_ardata' here because the 610 `hdr' member has the same size and position in both formats. 611 <bigaf> is the default format, return TRUE even when xcoff_ardata is 612 NULL. */ 613 #ifndef SMALL_ARCHIVE 614 /* Creates big archives by default */ 615 #define xcoff_big_format_p(abfd) \ 616 ((NULL != bfd_ardata (abfd) && NULL == xcoff_ardata (abfd)) || \ 617 ((NULL != bfd_ardata (abfd)) && \ 618 (NULL != xcoff_ardata (abfd)) && \ 619 (xcoff_ardata (abfd)->magic[1] == 'b'))) 620 #else 621 /* Creates small archives by default. */ 622 #define xcoff_big_format_p(abfd) \ 623 (((NULL != bfd_ardata (abfd)) && \ 624 (NULL != xcoff_ardata (abfd)) && \ 625 (xcoff_ardata (abfd)->magic[1] == 'b'))) 626 #endif 627 628 /* We store a copy of the xcoff_ar_file_hdr in the tdata field of the 629 artdata structure. Similar for the big archive. */ 630 #define xcoff_ardata(abfd) \ 631 ((struct xcoff_ar_file_hdr *) bfd_ardata (abfd)->tdata) 632 #define xcoff_ardata_big(abfd) \ 633 ((struct xcoff_ar_file_hdr_big *) bfd_ardata (abfd)->tdata) 634 635 /* We store a copy of the xcoff_ar_hdr in the arelt_data field of an 636 archive element. Similar for the big archive. */ 637 #define arch_eltdata(bfd) ((struct areltdata *) ((bfd)->arelt_data)) 638 #define arch_xhdr(bfd) \ 639 ((struct xcoff_ar_hdr *) arch_eltdata (bfd)->arch_header) 640 #define arch_xhdr_big(bfd) \ 641 ((struct xcoff_ar_hdr_big *) arch_eltdata (bfd)->arch_header) 642 643 /* True if symbols of class CLASS are external. */ 644 #define EXTERN_SYM_P(CLASS) \ 645 ((CLASS) == C_EXT || (CLASS) == C_AIX_WEAKEXT) 646 647 #endif /* _INTERNAL_XCOFF_H */ 648