1 /* Internal format of COFF object file data structures, for GNU BFD. 2 This file is part of BFD, the Binary File Descriptor library. 3 4 Copyright (C) 1999-2021 Free Software Foundation, Inc. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21 #ifndef GNU_COFF_INTERNAL_H 22 #define GNU_COFF_INTERNAL_H 1 23 24 /* First, make "signed char" work, even on old compilers. */ 25 #ifndef signed 26 #ifndef __STDC__ 27 #define signed /**/ 28 #endif 29 #endif 30 31 /********************** FILE HEADER **********************/ 32 33 /* extra stuff in a PE header. */ 34 35 struct internal_extra_pe_filehdr 36 { 37 /* DOS header data follows for PE stuff */ 38 unsigned short e_magic; /* Magic number, 0x5a4d */ 39 unsigned short e_cblp; /* Bytes on last page of file, 0x90 */ 40 unsigned short e_cp; /* Pages in file, 0x3 */ 41 unsigned short e_crlc; /* Relocations, 0x0 */ 42 unsigned short e_cparhdr; /* Size of header in paragraphs, 0x4 */ 43 unsigned short e_minalloc; /* Minimum extra paragraphs needed, 0x0 */ 44 unsigned short e_maxalloc; /* Maximum extra paragraphs needed, 0xFFFF */ 45 unsigned short e_ss; /* Initial (relative) SS value, 0x0 */ 46 unsigned short e_sp; /* Initial SP value, 0xb8 */ 47 unsigned short e_csum; /* Checksum, 0x0 */ 48 unsigned short e_ip; /* Initial IP value, 0x0 */ 49 unsigned short e_cs; /* Initial (relative) CS value, 0x0 */ 50 unsigned short e_lfarlc; /* File address of relocation table, 0x40 */ 51 unsigned short e_ovno; /* Overlay number, 0x0 */ 52 unsigned short e_res[4]; /* Reserved words, all 0x0 */ 53 unsigned short e_oemid; /* OEM identifier (for e_oeminfo), 0x0 */ 54 unsigned short e_oeminfo; /* OEM information; e_oemid specific, 0x0 */ 55 unsigned short e_res2[10]; /* Reserved words, all 0x0 */ 56 bfd_vma e_lfanew; /* File address of new exe header, 0x80 */ 57 unsigned int dos_message[16]; /* Text which always follows DOS header. */ 58 bfd_vma nt_signature; /* required NT signature, 0x4550 */ 59 }; 60 61 struct internal_filehdr 62 { 63 struct internal_extra_pe_filehdr pe; 64 65 /* Standard coff internal info. */ 66 unsigned short f_magic; /* magic number */ 67 unsigned int f_nscns; /* number of sections */ 68 long f_timdat; /* time & date stamp */ 69 bfd_vma f_symptr; /* file pointer to symtab */ 70 long f_nsyms; /* number of symtab entries */ 71 unsigned short f_opthdr; /* sizeof(optional hdr) */ 72 unsigned short f_flags; /* flags */ 73 unsigned short f_target_id; /* (TI COFF specific) */ 74 }; 75 76 77 /* Bits for f_flags: 78 F_RELFLG relocation info stripped from file 79 F_EXEC file is executable (no unresolved external references) 80 F_LNNO line numbers stripped from file 81 F_LSYMS local symbols stripped from file 82 F_AR16WR file is 16-bit little-endian 83 F_AR32WR file is 32-bit little-endian 84 F_AR32W file is 32-bit big-endian 85 F_DYNLOAD rs/6000 aix: dynamically loadable w/imports & exports 86 F_SHROBJ rs/6000 aix: file is a shared object 87 F_DLL PE format DLL */ 88 89 #define F_RELFLG (0x0001) 90 #define F_EXEC (0x0002) 91 #define F_LNNO (0x0004) 92 #define F_LSYMS (0x0008) 93 #define F_AR16WR (0x0080) 94 #define F_AR32WR (0x0100) 95 #define F_AR32W (0x0200) 96 #define F_DYNLOAD (0x1000) 97 #define F_SHROBJ (0x2000) 98 #define F_DLL (0x2000) 99 100 /* Extra structure which is used in the optional header. */ 101 typedef struct _IMAGE_DATA_DIRECTORY 102 { 103 bfd_vma VirtualAddress; 104 long Size; 105 } IMAGE_DATA_DIRECTORY; 106 #define PE_EXPORT_TABLE 0 107 #define PE_IMPORT_TABLE 1 108 #define PE_RESOURCE_TABLE 2 109 #define PE_EXCEPTION_TABLE 3 110 #define PE_CERTIFICATE_TABLE 4 111 #define PE_BASE_RELOCATION_TABLE 5 112 #define PE_DEBUG_DATA 6 113 #define PE_ARCHITECTURE 7 114 #define PE_GLOBAL_PTR 8 115 #define PE_TLS_TABLE 9 116 #define PE_LOAD_CONFIG_TABLE 10 117 #define PE_BOUND_IMPORT_TABLE 11 118 #define PE_IMPORT_ADDRESS_TABLE 12 119 #define PE_DELAY_IMPORT_DESCRIPTOR 13 120 #define PE_CLR_RUNTIME_HEADER 14 121 /* DataDirectory[15] is currently reserved, so no define. */ 122 #define IMAGE_NUMBEROF_DIRECTORY_ENTRIES 16 123 124 /* Extra structure used in debug directory. */ 125 struct internal_IMAGE_DEBUG_DIRECTORY 126 { 127 unsigned long Characteristics; 128 unsigned long TimeDateStamp; 129 unsigned short MajorVersion; 130 unsigned short MinorVersion; 131 unsigned long Type; 132 unsigned long SizeOfData; 133 unsigned long AddressOfRawData; 134 unsigned long PointerToRawData; 135 }; 136 137 #define PE_IMAGE_DEBUG_TYPE_UNKNOWN 0 138 #define PE_IMAGE_DEBUG_TYPE_COFF 1 139 #define PE_IMAGE_DEBUG_TYPE_CODEVIEW 2 140 #define PE_IMAGE_DEBUG_TYPE_FPO 3 141 #define PE_IMAGE_DEBUG_TYPE_MISC 4 142 #define PE_IMAGE_DEBUG_TYPE_EXCEPTION 5 143 #define PE_IMAGE_DEBUG_TYPE_FIXUP 6 144 #define PE_IMAGE_DEBUG_TYPE_OMAP_TO_SRC 7 145 #define PE_IMAGE_DEBUG_TYPE_OMAP_FROM_SRC 8 146 #define PE_IMAGE_DEBUG_TYPE_BORLAND 9 147 #define PE_IMAGE_DEBUG_TYPE_RESERVED10 10 148 #define PE_IMAGE_DEBUG_TYPE_CLSID 11 149 #define PE_IMAGE_DEBUG_TYPE_VC_FEATURE 12 150 #define PE_IMAGE_DEBUG_TYPE_POGO 13 151 #define PE_IMAGE_DEBUG_TYPE_ILTCG 14 152 #define PE_IMAGE_DEBUG_TYPE_MPX 15 153 #define PE_IMAGE_DEBUG_TYPE_REPRO 16 154 155 /* Extra structure for a codeview debug record */ 156 #define CV_INFO_SIGNATURE_LENGTH 16 157 158 typedef struct _CODEVIEW_INFO 159 { 160 unsigned long CVSignature; 161 char Signature[CV_INFO_SIGNATURE_LENGTH]; 162 unsigned int SignatureLength; 163 unsigned long Age; 164 /* char PdbFileName[]; */ 165 } CODEVIEW_INFO; 166 167 /* Default image base for NT. */ 168 #define NT_EXE_IMAGE_BASE 0x400000 169 #define NT_DLL_IMAGE_BASE 0x10000000 170 171 /* Default image base for BeOS. */ 172 #define BEOS_EXE_IMAGE_BASE 0x80000000 173 #define BEOS_DLL_IMAGE_BASE 0x10000000 174 175 /* Extra stuff in a PE aouthdr */ 176 177 #define PE_DEF_SECTION_ALIGNMENT 0x1000 178 #ifndef PE_DEF_FILE_ALIGNMENT 179 # define PE_DEF_FILE_ALIGNMENT 0x200 180 #endif 181 182 struct internal_extra_pe_aouthdr 183 { 184 /* FIXME: The following entries are in AOUTHDR. But they aren't 185 available internally in bfd. We add them here so that objdump 186 can dump them. */ 187 /* The state of the image file. */ 188 short Magic; 189 /* Linker major version number. */ 190 char MajorLinkerVersion; 191 /* Linker minor version number. */ 192 char MinorLinkerVersion; 193 /* Total size of all code sections. */ 194 bfd_vma SizeOfCode; 195 /* Total size of all initialized data sections. */ 196 bfd_vma SizeOfInitializedData; 197 /* Total size of all uninitialized data sections. */ 198 bfd_vma SizeOfUninitializedData; 199 /* Address of entry point relative to image base. */ 200 bfd_vma AddressOfEntryPoint; 201 /* Address of the first code section relative to image base. */ 202 bfd_vma BaseOfCode; 203 /* Address of the first data section relative to image base. */ 204 bfd_vma BaseOfData; 205 206 /* PE stuff */ 207 bfd_vma ImageBase; /* Address of specific location in memory that 208 file is located, NT default 0x10000. */ 209 210 uint32_t SectionAlignment; /* Section alignment default 0x1000. */ 211 uint32_t FileAlignment; /* File alignment default 0x200. */ 212 short MajorOperatingSystemVersion; /* Minimum version of the operating. */ 213 short MinorOperatingSystemVersion; /* System req'd for exe, default 1. */ 214 short MajorImageVersion; /* User defineable field to store version of */ 215 short MinorImageVersion; /* exe or dll being created, default to 0. */ 216 short MajorSubsystemVersion; /* Minimum subsystem version required to */ 217 short MinorSubsystemVersion; /* run exe; default to 3.1. */ 218 uint32_t Reserved1; /* Seems to be 0. */ 219 uint32_t SizeOfImage; /* Size of memory to allocate for prog. */ 220 uint32_t SizeOfHeaders; /* Size of PE header and section table. */ 221 uint32_t CheckSum; /* Set to 0. */ 222 short Subsystem; 223 224 /* Type of subsystem exe uses for user interface, 225 possible values: 226 1 - NATIVE Doesn't require a subsystem 227 2 - WINDOWS_GUI runs in Windows GUI subsystem 228 3 - WINDOWS_CUI runs in Windows char sub. (console app) 229 5 - OS2_CUI runs in OS/2 character subsystem 230 7 - POSIX_CUI runs in Posix character subsystem. */ 231 unsigned short DllCharacteristics; /* flags for DLL init. */ 232 bfd_vma SizeOfStackReserve; /* Amount of memory to reserve. */ 233 bfd_vma SizeOfStackCommit; /* Amount of memory initially committed for 234 initial thread's stack, default 0x1000. */ 235 bfd_vma SizeOfHeapReserve; /* Amount of virtual memory to reserve and */ 236 bfd_vma SizeOfHeapCommit; /* commit, don't know what to defaut it to. */ 237 uint32_t LoaderFlags; /* Can probably set to 0. */ 238 uint32_t NumberOfRvaAndSizes; /* Number of entries in next entry, 16. */ 239 IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES]; 240 }; 241 242 /********************** AOUT "OPTIONAL HEADER" **********************/ 243 struct internal_aouthdr 244 { 245 short magic; /* type of file */ 246 short vstamp; /* version stamp */ 247 bfd_vma tsize; /* text size in bytes, padded to FW bdry*/ 248 bfd_vma dsize; /* initialized data " " */ 249 bfd_vma bsize; /* uninitialized data " " */ 250 bfd_vma entry; /* entry pt. */ 251 bfd_vma text_start; /* base of text used for this file */ 252 bfd_vma data_start; /* base of data used for this file */ 253 254 /* RS/6000 stuff */ 255 bfd_vma o_toc; /* address of TOC */ 256 short o_snentry; /* section number for entry point */ 257 short o_sntext; /* section number for text */ 258 short o_sndata; /* section number for data */ 259 short o_sntoc; /* section number for toc */ 260 short o_snloader; /* section number for loader section */ 261 short o_snbss; /* section number for bss */ 262 short o_algntext; /* max alignment for text */ 263 short o_algndata; /* max alignment for data */ 264 short o_modtype; /* Module type field, 1R,RE,RO */ 265 short o_cputype; /* Encoded CPU type */ 266 bfd_vma o_maxstack; /* max stack size allowed. */ 267 bfd_vma o_maxdata; /* max data size allowed. */ 268 char o_flags; /* Flags and TLS alignment */ 269 short o_sntdata; /* section number for tdata */ 270 short o_sntbss; /* section number for tbss */ 271 short o_x64flags; /* XCOFF64 flags */ 272 273 274 /* ECOFF stuff */ 275 bfd_vma bss_start; /* Base of bss section. */ 276 bfd_vma gp_value; /* GP register value. */ 277 unsigned long gprmask; /* General registers used. */ 278 unsigned long cprmask[4]; /* Coprocessor registers used. */ 279 unsigned long fprmask; /* Floating pointer registers used. */ 280 281 /* Apollo stuff */ 282 long o_inlib; /* inlib data */ 283 long o_sri; /* Static Resource Information */ 284 long vid[2]; /* Version id */ 285 286 struct internal_extra_pe_aouthdr pe; 287 }; 288 289 /********************** STORAGE CLASSES **********************/ 290 291 /* This used to be defined as -1, but now n_sclass is unsigned. */ 292 #define C_EFCN 0xff /* physical end of function */ 293 #define C_NULL 0 294 #define C_AUTO 1 /* automatic variable */ 295 #define C_EXT 2 /* external symbol */ 296 #define C_STAT 3 /* static */ 297 #define C_REG 4 /* register variable */ 298 #define C_EXTDEF 5 /* external definition */ 299 #define C_LABEL 6 /* label */ 300 #define C_ULABEL 7 /* undefined label */ 301 #define C_MOS 8 /* member of structure */ 302 #define C_ARG 9 /* function argument */ 303 #define C_STRTAG 10 /* structure tag */ 304 #define C_MOU 11 /* member of union */ 305 #define C_UNTAG 12 /* union tag */ 306 #define C_TPDEF 13 /* type definition */ 307 #define C_USTATIC 14 /* undefined static */ 308 #define C_ENTAG 15 /* enumeration tag */ 309 #define C_MOE 16 /* member of enumeration */ 310 #define C_REGPARM 17 /* register parameter */ 311 #define C_FIELD 18 /* bit field */ 312 #define C_AUTOARG 19 /* auto argument */ 313 #define C_LASTENT 20 /* dummy entry (end of block) */ 314 #define C_BLOCK 100 /* ".bb" or ".eb" */ 315 #define C_FCN 101 /* ".bf" or ".ef" */ 316 #define C_EOS 102 /* end of structure */ 317 #define C_FILE 103 /* file name */ 318 #define C_LINE 104 /* line # reformatted as symbol table entry */ 319 #define C_ALIAS 105 /* duplicate tag */ 320 #define C_HIDDEN 106 /* ext symbol in dmert public lib */ 321 #define C_WEAKEXT 127 /* weak symbol -- GNU extension. */ 322 323 /* New storage classes for TI COFF */ 324 #define C_UEXT 19 /* Tentative external definition */ 325 #define C_STATLAB 20 /* Static load time label */ 326 #define C_EXTLAB 21 /* External load time label */ 327 #define C_SYSTEM 23 /* System Wide variable */ 328 329 /* New storage classes for WINDOWS_NT */ 330 #define C_SECTION 104 /* section name */ 331 #define C_NT_WEAK 105 /* weak external */ 332 333 /* New storage classes for 80960 */ 334 335 /* C_LEAFPROC is obsolete. Use C_LEAFEXT or C_LEAFSTAT */ 336 #define C_LEAFPROC 108 /* Leaf procedure, "call" via BAL */ 337 338 #define C_SCALL 107 /* Procedure reachable via system call */ 339 #define C_LEAFEXT 108 /* External leaf */ 340 #define C_LEAFSTAT 113 /* Static leaf */ 341 #define C_OPTVAR 109 /* Optimized variable */ 342 #define C_DEFINE 110 /* Preprocessor #define */ 343 #define C_PRAGMA 111 /* Advice to compiler or linker */ 344 #define C_SEGMENT 112 /* 80960 segment name */ 345 346 /* New storage classes for RS/6000 */ 347 #define C_HIDEXT 107 /* Un-named external symbol */ 348 #define C_BINCL 108 /* Marks beginning of include file */ 349 #define C_EINCL 109 /* Marks ending of include file */ 350 #define C_AIX_WEAKEXT 111 /* AIX definition of C_WEAKEXT. */ 351 #define C_DWARF 112 /* DWARF symbol */ 352 353 #define C_NULL_VALUE 0x00de1e00 /* Value for a C_NULL deleted entry. */ 354 355 #if defined _AIX52 || defined AIX_WEAK_SUPPORT 356 #undef C_WEAKEXT 357 #define C_WEAKEXT C_AIX_WEAKEXT 358 #endif 359 360 /* storage classes for stab symbols for RS/6000 */ 361 #define C_GSYM (0x80) 362 #define C_LSYM (0x81) 363 #define C_PSYM (0x82) 364 #define C_RSYM (0x83) 365 #define C_RPSYM (0x84) 366 #define C_STSYM (0x85) 367 #define C_TCSYM (0x86) 368 #define C_BCOMM (0x87) 369 #define C_ECOML (0x88) 370 #define C_ECOMM (0x89) 371 #define C_DECL (0x8c) 372 #define C_ENTRY (0x8d) 373 #define C_FUN (0x8e) 374 #define C_BSTAT (0x8f) 375 #define C_ESTAT (0x90) 376 #define C_GTLS (0x97) 377 #define C_STTLS (0x98) 378 379 /* Storage classes for Thumb symbols */ 380 #define C_THUMBEXT (128 + C_EXT) /* 130 */ 381 #define C_THUMBSTAT (128 + C_STAT) /* 131 */ 382 #define C_THUMBLABEL (128 + C_LABEL) /* 134 */ 383 #define C_THUMBEXTFUNC (C_THUMBEXT + 20) /* 150 */ 384 #define C_THUMBSTATFUNC (C_THUMBSTAT + 20) /* 151 */ 385 386 /* True if XCOFF symbols of class CLASS have auxiliary csect information. */ 387 #define CSECT_SYM_P(CLASS) \ 388 ((CLASS) == C_EXT || (CLASS) == C_AIX_WEAKEXT || (CLASS) == C_HIDEXT) 389 390 /********************** SECTION HEADER **********************/ 391 392 #define SCNNMLEN (8) 393 394 struct internal_scnhdr 395 { 396 char s_name[SCNNMLEN] ATTRIBUTE_NONSTRING; /* section name */ 397 398 /* Physical address, aliased s_nlib. 399 In the pei format, this field is the virtual section size 400 (the size of the section after being loaded int memory), 401 NOT the physical address. */ 402 bfd_vma s_paddr; 403 404 bfd_vma s_vaddr; /* virtual address */ 405 bfd_vma s_size; /* section size */ 406 bfd_vma s_scnptr; /* file ptr to raw data for section */ 407 bfd_vma s_relptr; /* file ptr to relocation */ 408 bfd_vma s_lnnoptr; /* file ptr to line numbers */ 409 unsigned long s_nreloc; /* number of relocation entries */ 410 unsigned long s_nlnno; /* number of line number entries*/ 411 unsigned long s_flags; /* flags */ 412 unsigned char s_page; /* TI COFF load page */ 413 }; 414 415 /* s_flags "type". */ 416 #define STYP_REG (0x0000) /* "regular": allocated, relocated, loaded */ 417 #define STYP_DSECT (0x0001) /* "dummy": relocated only*/ 418 #define STYP_NOLOAD (0x0002) /* "noload": allocated, relocated, not loaded */ 419 #define STYP_GROUP (0x0004) /* "grouped": formed of input sections */ 420 #define STYP_PAD (0x0008) /* "padding": not allocated, not relocated, loaded */ 421 #define STYP_COPY (0x0010) /* "copy": for decision function used by field update; not allocated, not relocated, 422 loaded; reloc & lineno entries processed normally */ 423 #define STYP_TEXT (0x0020) /* section contains text only */ 424 #define S_SHRSEG (0x0020) /* In 3b Update files (output of ogen), sections which appear in SHARED segments of the Pfile 425 will have the S_SHRSEG flag set by ogen, to inform dufr that updating 1 copy of the proc. will 426 update all process invocations. */ 427 #define STYP_DATA (0x0040) /* section contains data only */ 428 #define STYP_BSS (0x0080) /* section contains bss only */ 429 #define S_NEWFCN (0x0100) /* In a minimal file or an update file, a new function (as compared with a replaced function) */ 430 #define STYP_INFO (0x0200) /* comment: not allocated not relocated, not loaded */ 431 #define STYP_OVER (0x0400) /* overlay: relocated not allocated or loaded */ 432 #define STYP_LIB (0x0800) /* for .lib: same as INFO */ 433 #define STYP_MERGE (0x2000) /* merge section -- combines with text, data or bss sections only */ 434 #define STYP_REVERSE_PAD (0x4000) /* section will be padded with no-op instructions 435 wherever padding is necessary and there is a 436 word of contiguous bytes beginning on a word 437 boundary. */ 438 439 #define STYP_LIT 0x8020 /* Literal data (like STYP_TEXT) */ 440 441 442 /********************** LINE NUMBERS **********************/ 443 444 /* 1 line number entry for every "breakpointable" source line in a section. 445 Line numbers are grouped on a per function basis; first entry in a function 446 grouping will have l_lnno = 0 and in place of physical address will be the 447 symbol table index of the function name. */ 448 449 struct internal_lineno 450 { 451 union 452 { 453 bfd_signed_vma l_symndx; /* function name symbol index, iff l_lnno == 0*/ 454 bfd_signed_vma l_paddr; /* (physical) address of line number */ 455 } l_addr; 456 unsigned long l_lnno; /* line number */ 457 }; 458 459 /********************** SYMBOLS **********************/ 460 461 #define SYMNMLEN 8 /* # characters in a symbol name */ 462 #define FILNMLEN 14 /* # characters in a file name */ 463 #define DIMNUM 4 /* # array dimensions in auxiliary entry */ 464 465 struct internal_syment 466 { 467 union 468 { 469 char _n_name[SYMNMLEN] ATTRIBUTE_NONSTRING; /* old COFF version */ 470 struct 471 { 472 bfd_hostptr_t _n_zeroes; /* new == 0 */ 473 bfd_hostptr_t _n_offset; /* offset into string table */ 474 } _n_n; 475 char *_n_nptr[2]; /* allows for overlaying */ 476 } _n; 477 bfd_vma n_value; /* value of symbol */ 478 int n_scnum; /* section number */ 479 unsigned short n_flags; /* copy of flags from filhdr */ 480 unsigned short n_type; /* type and derived type */ 481 unsigned char n_sclass; /* storage class */ 482 unsigned char n_numaux; /* number of aux. entries */ 483 }; 484 485 #define n_name _n._n_name 486 #define n_zeroes _n._n_n._n_zeroes 487 #define n_offset _n._n_n._n_offset 488 489 /* Relocatable symbols have number of the section in which they are defined, 490 or one of the following: */ 491 492 #define N_UNDEF ((int)0) /* undefined symbol */ 493 #define N_ABS ((int)-1) /* value of symbol is absolute */ 494 #define N_DEBUG ((int)-2) /* debugging symbol -- value is meaningless */ 495 #define N_TV ((int)-3) /* indicates symbol needs preload transfer vector */ 496 #define P_TV ((int)-4) /* indicates symbol needs postload transfer vector*/ 497 498 /* Type of a symbol, in low N bits of the word. */ 499 500 #define T_NULL 0 501 #define T_VOID 1 /* function argument (only used by compiler) */ 502 #define T_CHAR 2 /* character */ 503 #define T_SHORT 3 /* short integer */ 504 #define T_INT 4 /* integer */ 505 #define T_LONG 5 /* long integer */ 506 #define T_FLOAT 6 /* floating point */ 507 #define T_DOUBLE 7 /* double word */ 508 #define T_STRUCT 8 /* structure */ 509 #define T_UNION 9 /* union */ 510 #define T_ENUM 10 /* enumeration */ 511 #define T_MOE 11 /* member of enumeration*/ 512 #define T_UCHAR 12 /* unsigned character */ 513 #define T_USHORT 13 /* unsigned short */ 514 #define T_UINT 14 /* unsigned integer */ 515 #define T_ULONG 15 /* unsigned long */ 516 #define T_LNGDBL 16 /* long double */ 517 518 /* Derived types, in n_type. */ 519 520 #define DT_NON (0) /* no derived type */ 521 #define DT_PTR (1) /* pointer */ 522 #define DT_FCN (2) /* function */ 523 #define DT_ARY (3) /* array */ 524 525 #define BTYPE(x) ((x) & N_BTMASK) 526 #define DTYPE(x) (((x) & N_TMASK) >> N_BTSHFT) 527 528 #define ISPTR(x) \ 529 (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_PTR << N_BTSHFT)) 530 #define ISFCN(x) \ 531 (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_FCN << N_BTSHFT)) 532 #define ISARY(x) \ 533 (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_ARY << N_BTSHFT)) 534 #define ISTAG(x) \ 535 ((x) == C_STRTAG || (x) == C_UNTAG || (x) == C_ENTAG) 536 #define DECREF(x) \ 537 ((((x) >> N_TSHIFT) & ~ N_BTMASK) | ((x) & N_BTMASK)) 538 539 union internal_auxent 540 { 541 struct 542 { 543 544 union 545 { 546 long l; /* str, un, or enum tag indx */ 547 struct coff_ptr_struct *p; 548 } x_tagndx; 549 550 union 551 { 552 struct 553 { 554 unsigned short x_lnno; /* declaration line number */ 555 unsigned short x_size; /* str/union/array size */ 556 } x_lnsz; 557 long x_fsize; /* size of function */ 558 } x_misc; 559 560 union 561 { 562 struct 563 { /* if ISFCN, tag, or .bb */ 564 bfd_signed_vma x_lnnoptr; /* ptr to fcn line # */ 565 union 566 { /* entry ndx past block end */ 567 long l; 568 struct coff_ptr_struct *p; 569 } x_endndx; 570 } x_fcn; 571 572 struct 573 { /* if ISARY, up to 4 dimen. */ 574 unsigned short x_dimen[DIMNUM]; 575 } x_ary; 576 } x_fcnary; 577 578 unsigned short x_tvndx; /* tv index */ 579 } x_sym; 580 581 union 582 { 583 /* PR 17754: We use to FILNMLEN for the size of the x_fname 584 array, but that causes problems as PE targets use a larger 585 value. We cannot use their definition of E_FILNMLEN as this 586 header can be used without including any PE headers. */ 587 char x_fname[20]; 588 struct 589 { 590 long x_zeroes; 591 long x_offset; 592 } x_n; 593 } x_file; 594 595 struct 596 { 597 long x_scnlen; /* section length */ 598 unsigned short x_nreloc; /* # relocation entries */ 599 unsigned short x_nlinno; /* # line numbers */ 600 unsigned long x_checksum; /* section COMDAT checksum for PE */ 601 unsigned short x_associated; /* COMDAT associated section index for PE */ 602 unsigned char x_comdat; /* COMDAT selection number for PE */ 603 } x_scn; 604 605 struct 606 { 607 long x_tvfill; /* tv fill value */ 608 unsigned short x_tvlen; /* length of .tv */ 609 unsigned short x_tvran[2]; /* tv range */ 610 } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ 611 612 /****************************************** 613 * RS/6000-specific auxent - last auxent for every external symbol 614 ******************************************/ 615 struct 616 { 617 union 618 { /* csect length or enclosing csect */ 619 bfd_signed_vma l; 620 struct coff_ptr_struct *p; 621 } x_scnlen; 622 long x_parmhash; /* parm type hash index */ 623 unsigned short x_snhash; /* sect num with parm hash */ 624 unsigned char x_smtyp; /* symbol align and type */ 625 /* 0-4 - Log 2 of alignment */ 626 /* 5-7 - symbol type */ 627 unsigned char x_smclas; /* storage mapping class */ 628 long x_stab; /* dbx stab info index */ 629 unsigned short x_snstab; /* sect num with dbx stab */ 630 } x_csect; /* csect definition information */ 631 632 /* x_smtyp values: */ 633 634 #define SMTYP_ALIGN(x) ((x) >> 3) /* log2 of alignment */ 635 #define SMTYP_SMTYP(x) ((x) & 0x7) /* symbol type */ 636 /* Symbol type values: */ 637 #define XTY_ER 0 /* External reference */ 638 #define XTY_SD 1 /* Csect definition */ 639 #define XTY_LD 2 /* Label definition */ 640 #define XTY_CM 3 /* .BSS */ 641 #define XTY_EM 4 /* Error message */ 642 #define XTY_US 5 /* "Reserved for internal use" */ 643 644 /* x_smclas values: */ 645 646 #define XMC_PR 0 /* Read-only program code */ 647 #define XMC_RO 1 /* Read-only constant */ 648 #define XMC_DB 2 /* Read-only debug dictionary table */ 649 #define XMC_TC 3 /* Read-write general TOC entry */ 650 #define XMC_UA 4 /* Read-write unclassified */ 651 #define XMC_RW 5 /* Read-write data */ 652 #define XMC_GL 6 /* Read-only global linkage */ 653 #define XMC_XO 7 /* Read-only extended operation */ 654 #define XMC_SV 8 /* Read-only supervisor call */ 655 #define XMC_BS 9 /* Read-write BSS */ 656 #define XMC_DS 10 /* Read-write descriptor csect */ 657 #define XMC_UC 11 /* Read-write unnamed Fortran common */ 658 #define XMC_TI 12 /* Read-only traceback index csect */ 659 #define XMC_TB 13 /* Read-only traceback table csect */ 660 /* 14 ??? */ 661 #define XMC_TC0 15 /* Read-write TOC anchor */ 662 #define XMC_TD 16 /* Read-write data in TOC */ 663 664 struct 665 { 666 long x_scnlen; /* Section length */ 667 long x_nreloc; /* Number of relocation entries */ 668 } x_sect; 669 }; 670 671 /********************** RELOCATION DIRECTIVES **********************/ 672 673 struct internal_reloc 674 { 675 bfd_vma r_vaddr; /* Virtual address of reference */ 676 long r_symndx; /* Index into symbol table */ 677 unsigned short r_type; /* Relocation type */ 678 unsigned char r_size; /* Used by RS/6000 and ECOFF */ 679 unsigned char r_extern; /* Used by ECOFF */ 680 unsigned long r_offset; /* Used by Alpha ECOFF, SPARC, others */ 681 }; 682 683 #endif /* GNU_COFF_INTERNAL_H */ 684