include/coff/internal.h

   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) 1999-2020 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 #define GO32_STUBSIZE 2048
  62
  63 struct internal_filehdr
  64 {
  65   struct internal_extra_pe_filehdr pe;
  66
  67   /* coff-stgo32 EXE stub header before BFD tdata has been allocated.
  68      Its data is kept in INTERNAL_FILEHDR.GO32STUB afterwards.
  69
  70      F_GO32STUB is set iff go32stub contains a valid data.  Artifical headers
  71      created in BFD have no pre-set go32stub.  */
  72   char go32stub[GO32_STUBSIZE];
  73
  74   /* Standard coff internal info.  */
  75   unsigned short f_magic;       /* magic number                 */
  76   unsigned int   f_nscns;       /* number of sections           */
  77   long f_timdat;                /* time & date stamp            */
  78   bfd_vma f_symptr;             /* file pointer to symtab       */
  79   long f_nsyms;                 /* number of symtab entries     */
  80   unsigned short f_opthdr;      /* sizeof(optional hdr)         */
  81   unsigned short f_flags;       /* flags                        */
  82   unsigned short f_target_id;   /* (TI COFF specific)           */
  83 };
  84
  85
  86 /* Bits for f_flags:
  87         F_RELFLG        relocation info stripped from file
  88         F_EXEC          file is executable (no unresolved external references)
  89         F_LNNO          line numbers stripped from file
  90         F_LSYMS         local symbols stripped from file
  91         F_AR16WR        file is 16-bit little-endian
  92         F_AR32WR        file is 32-bit little-endian
  93         F_AR32W         file is 32-bit big-endian
  94         F_DYNLOAD       rs/6000 aix: dynamically loadable w/imports & exports
  95         F_SHROBJ        rs/6000 aix: file is a shared object
  96         F_DLL           PE format DLL
  97         F_GO32STUB      Field go32stub contains valid data.  */
  98
  99 #define F_RELFLG        (0x0001)
 100 #define F_EXEC          (0x0002)
 101 #define F_LNNO          (0x0004)
 102 #define F_LSYMS         (0x0008)
 103 #define F_AR16WR        (0x0080)
 104 #define F_AR32WR        (0x0100)
 105 #define F_AR32W         (0x0200)
 106 #define F_DYNLOAD       (0x1000)
 107 #define F_SHROBJ        (0x2000)
 108 #define F_DLL           (0x2000)
 109 #define F_GO32STUB      (0x4000)
 110
 111 /* Extra structure which is used in the optional header.  */
 112 typedef struct _IMAGE_DATA_DIRECTORY
 113 {
 114   bfd_vma VirtualAddress;
 115   long    Size;
 116 }  IMAGE_DATA_DIRECTORY;
 117 #define PE_EXPORT_TABLE                 0
 118 #define PE_IMPORT_TABLE                 1
 119 #define PE_RESOURCE_TABLE               2
 120 #define PE_EXCEPTION_TABLE              3
 121 #define PE_CERTIFICATE_TABLE            4
 122 #define PE_BASE_RELOCATION_TABLE        5
 123 #define PE_DEBUG_DATA                   6
 124 #define PE_ARCHITECTURE                 7
 125 #define PE_GLOBAL_PTR                   8
 126 #define PE_TLS_TABLE                    9
 127 #define PE_LOAD_CONFIG_TABLE            10
 128 #define PE_BOUND_IMPORT_TABLE           11
 129 #define PE_IMPORT_ADDRESS_TABLE         12
 130 #define PE_DELAY_IMPORT_DESCRIPTOR      13
 131 #define PE_CLR_RUNTIME_HEADER           14
 132 /* DataDirectory[15] is currently reserved, so no define. */
 133 #define IMAGE_NUMBEROF_DIRECTORY_ENTRIES  16
 134
 135 /* Extra structure used in debug directory.  */
 136 struct internal_IMAGE_DEBUG_DIRECTORY
 137 {
 138   unsigned long  Characteristics;
 139   unsigned long  TimeDateStamp;
 140   unsigned short MajorVersion;
 141   unsigned short MinorVersion;
 142   unsigned long  Type;
 143   unsigned long  SizeOfData;
 144   unsigned long  AddressOfRawData;
 145   unsigned long  PointerToRawData;
 146 };
 147
 148 #define PE_IMAGE_DEBUG_TYPE_UNKNOWN          0
 149 #define PE_IMAGE_DEBUG_TYPE_COFF             1
 150 #define PE_IMAGE_DEBUG_TYPE_CODEVIEW         2
 151 #define PE_IMAGE_DEBUG_TYPE_FPO              3
 152 #define PE_IMAGE_DEBUG_TYPE_MISC             4
 153 #define PE_IMAGE_DEBUG_TYPE_EXCEPTION        5
 154 #define PE_IMAGE_DEBUG_TYPE_FIXUP            6
 155 #define PE_IMAGE_DEBUG_TYPE_OMAP_TO_SRC      7
 156 #define PE_IMAGE_DEBUG_TYPE_OMAP_FROM_SRC    8
 157 #define PE_IMAGE_DEBUG_TYPE_BORLAND          9
 158 #define PE_IMAGE_DEBUG_TYPE_RESERVED10       10
 159 #define PE_IMAGE_DEBUG_TYPE_CLSID            11
 160 #define PE_IMAGE_DEBUG_TYPE_VC_FEATURE       12
 161 #define PE_IMAGE_DEBUG_TYPE_POGO             13
 162 #define PE_IMAGE_DEBUG_TYPE_ILTCG            14
 163 #define PE_IMAGE_DEBUG_TYPE_MPX              15
 164 #define PE_IMAGE_DEBUG_TYPE_REPRO            16
 165
 166 /* Extra structure for a codeview debug record */
 167 #define CV_INFO_SIGNATURE_LENGTH 16
 168
 169 typedef struct _CODEVIEW_INFO
 170 {
 171   unsigned long CVSignature;
 172   char          Signature[CV_INFO_SIGNATURE_LENGTH];
 173   unsigned int  SignatureLength;
 174   unsigned long Age;
 175   // char PdbFileName[];
 176 } CODEVIEW_INFO;
 177
 178 /* Default image base for NT.  */
 179 #define NT_EXE_IMAGE_BASE 0x400000
 180 #define NT_DLL_IMAGE_BASE 0x10000000
 181
 182 /* Default image base for BeOS. */
 183 #define BEOS_EXE_IMAGE_BASE 0x80000000
 184 #define BEOS_DLL_IMAGE_BASE 0x10000000
 185
 186 /* Extra stuff in a PE aouthdr */
 187
 188 #define PE_DEF_SECTION_ALIGNMENT 0x1000
 189 #ifndef PE_DEF_FILE_ALIGNMENT
 190 # define PE_DEF_FILE_ALIGNMENT 0x200
 191 #endif
 192
 193 struct internal_extra_pe_aouthdr
 194 {
 195   /* FIXME: The following entries are in AOUTHDR.  But they aren't
 196      available internally in bfd.  We add them here so that objdump
 197      can dump them.  */
 198   /* The state of the image file.  */
 199   short Magic;
 200   /* Linker major version number.  */
 201   char MajorLinkerVersion;
 202   /* Linker minor version number.  */
 203   char MinorLinkerVersion;
 204   /* Total size of all code sections.  */
 205   bfd_vma SizeOfCode;
 206   /* Total size of all initialized data sections.  */
 207   bfd_vma SizeOfInitializedData;
 208   /* Total size of all uninitialized data sections.  */
 209   bfd_vma SizeOfUninitializedData;
 210   /* Address of entry point relative to image base.  */
 211   bfd_vma AddressOfEntryPoint;
 212   /* Address of the first code section relative to image base.  */
 213   bfd_vma BaseOfCode;
 214   /* Address of the first data section relative to image base.  */
 215   bfd_vma BaseOfData;
 216
 217   /* PE stuff  */
 218   bfd_vma ImageBase;            /* Address of specific location in memory that
 219                                    file is located, NT default 0x10000.  */
 220
 221   uint32_t SectionAlignment;    /* Section alignment default 0x1000.  */
 222   uint32_t FileAlignment;       /* File alignment default 0x200.  */
 223   short MajorOperatingSystemVersion; /* Minimum version of the operating.  */
 224   short MinorOperatingSystemVersion; /* System req'd for exe, default 1.  */
 225   short MajorImageVersion;      /* User defineable field to store version of */
 226   short MinorImageVersion;      /*  exe or dll being created, default to 0.  */
 227   short MajorSubsystemVersion;  /* Minimum subsystem version required to */
 228   short MinorSubsystemVersion;  /*  run exe; default to 3.1.  */
 229   uint32_t Reserved1;           /* Seems to be 0.  */
 230   uint32_t SizeOfImage;         /* Size of memory to allocate for prog.  */
 231   uint32_t SizeOfHeaders;       /* Size of PE header and section table.  */
 232   uint32_t CheckSum;            /* Set to 0.  */
 233   short Subsystem;
 234
 235   /* Type of subsystem exe uses for user interface,
 236      possible values:
 237      1 - NATIVE   Doesn't require a subsystem
 238      2 - WINDOWS_GUI runs in Windows GUI subsystem
 239      3 - WINDOWS_CUI runs in Windows char sub. (console app)
 240      5 - OS2_CUI runs in OS/2 character subsystem
 241      7 - POSIX_CUI runs in Posix character subsystem.  */
 242   unsigned short DllCharacteristics; /* flags for DLL init.  */
 243   bfd_vma SizeOfStackReserve;   /* Amount of memory to reserve.  */
 244   bfd_vma SizeOfStackCommit;    /* Amount of memory initially committed for
 245                                    initial thread's stack, default 0x1000.  */
 246   bfd_vma SizeOfHeapReserve;    /* Amount of virtual memory to reserve and */
 247   bfd_vma SizeOfHeapCommit;     /*  commit, don't know what to defaut it to.  */
 248   uint32_t LoaderFlags;         /* Can probably set to 0.  */
 249   uint32_t NumberOfRvaAndSizes; /* Number of entries in next entry, 16.  */
 250   IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];
 251 };
 252
 253 /********************** AOUT "OPTIONAL HEADER" **********************/
 254 struct internal_aouthdr
 255 {
 256   short magic;                  /* type of file                         */
 257   short vstamp;                 /* version stamp                        */
 258   bfd_vma tsize;                /* text size in bytes, padded to FW bdry*/
 259   bfd_vma dsize;                /* initialized data "  "                */
 260   bfd_vma bsize;                /* uninitialized data "   "             */
 261   bfd_vma entry;                /* entry pt.                            */
 262   bfd_vma text_start;           /* base of text used for this file */
 263   bfd_vma data_start;           /* base of data used for this file */
 264
 265   /* RS/6000 stuff */
 266   bfd_vma o_toc;                /* address of TOC                       */
 267   short o_snentry;              /* section number for entry point */
 268   short o_sntext;               /* section number for text      */
 269   short o_sndata;               /* section number for data      */
 270   short o_sntoc;                /* section number for toc       */
 271   short o_snloader;             /* section number for loader section */
 272   short o_snbss;                /* section number for bss       */
 273   short o_algntext;             /* max alignment for text       */
 274   short o_algndata;             /* max alignment for data       */
 275   short o_modtype;              /* Module type field, 1R,RE,RO  */
 276   short o_cputype;              /* Encoded CPU type             */
 277   bfd_vma o_maxstack;   /* max stack size allowed.      */
 278   bfd_vma o_maxdata;    /* max data size allowed.       */
 279
 280   /* ECOFF stuff */
 281   bfd_vma bss_start;            /* Base of bss section.         */
 282   bfd_vma gp_value;             /* GP register value.           */
 283   unsigned long gprmask;        /* General registers used.      */
 284   unsigned long cprmask[4];     /* Coprocessor registers used.  */
 285   unsigned long fprmask;        /* Floating pointer registers used.  */
 286
 287   /* Apollo stuff */
 288   long o_inlib;                 /* inlib data */
 289   long o_sri;                   /* Static Resource Information */
 290   long vid[2];                  /* Version id */
 291
 292   struct internal_extra_pe_aouthdr pe;
 293 };
 294
 295 /********************** STORAGE CLASSES **********************/
 296
 297 /* This used to be defined as -1, but now n_sclass is unsigned.  */
 298 #define C_EFCN          0xff    /* physical end of function     */
 299 #define C_NULL          0
 300 #define C_AUTO          1       /* automatic variable           */
 301 #define C_EXT           2       /* external symbol              */
 302 #define C_STAT          3       /* static                       */
 303 #define C_REG           4       /* register variable            */
 304 #define C_EXTDEF        5       /* external definition          */
 305 #define C_LABEL         6       /* label                        */
 306 #define C_ULABEL        7       /* undefined label              */
 307 #define C_MOS           8       /* member of structure          */
 308 #define C_ARG           9       /* function argument            */
 309 #define C_STRTAG        10      /* structure tag                */
 310 #define C_MOU           11      /* member of union              */
 311 #define C_UNTAG         12      /* union tag                    */
 312 #define C_TPDEF         13      /* type definition              */
 313 #define C_USTATIC       14      /* undefined static             */
 314 #define C_ENTAG         15      /* enumeration tag              */
 315 #define C_MOE           16      /* member of enumeration        */
 316 #define C_REGPARM       17      /* register parameter           */
 317 #define C_FIELD         18      /* bit field                    */
 318 #define C_AUTOARG       19      /* auto argument                */
 319 #define C_LASTENT       20      /* dummy entry (end of block)   */
 320 #define C_BLOCK         100     /* ".bb" or ".eb"               */
 321 #define C_FCN           101     /* ".bf" or ".ef"               */
 322 #define C_EOS           102     /* end of structure             */
 323 #define C_FILE          103     /* file name                    */
 324 #define C_LINE          104     /* line # reformatted as symbol table entry */
 325 #define C_ALIAS         105     /* duplicate tag                */
 326 #define C_HIDDEN        106     /* ext symbol in dmert public lib */
 327 #define C_WEAKEXT       127     /* weak symbol -- GNU extension.  */
 328
 329 /* New storage classes for TI COFF */
 330 #define C_UEXT          19      /* Tentative external definition */
 331 #define C_STATLAB       20      /* Static load time label */
 332 #define C_EXTLAB        21      /* External load time label */
 333 #define C_SYSTEM        23      /* System Wide variable */
 334
 335 /* New storage classes for WINDOWS_NT   */
 336 #define C_SECTION       104     /* section name */
 337 #define C_NT_WEAK       105     /* weak external */
 338
 339  /* New storage classes for 80960 */
 340
 341 /* C_LEAFPROC is obsolete.  Use C_LEAFEXT or C_LEAFSTAT */
 342 #define C_LEAFPROC      108     /* Leaf procedure, "call" via BAL */
 343
 344 #define C_SCALL         107     /* Procedure reachable via system call */
 345 #define C_LEAFEXT       108     /* External leaf */
 346 #define C_LEAFSTAT      113     /* Static leaf */
 347 #define C_OPTVAR        109     /* Optimized variable           */
 348 #define C_DEFINE        110     /* Preprocessor #define         */
 349 #define C_PRAGMA        111     /* Advice to compiler or linker */
 350 #define C_SEGMENT       112     /* 80960 segment name           */
 351
 352  /* New storage classes for RS/6000 */
 353 #define C_HIDEXT        107     /* Un-named external symbol */
 354 #define C_BINCL         108     /* Marks beginning of include file */
 355 #define C_EINCL         109     /* Marks ending of include file */
 356 #define C_AIX_WEAKEXT   111     /* AIX definition of C_WEAKEXT.  */
 357
 358 #define C_NULL_VALUE    0x00de1e00    /* Value for a C_NULL deleted entry.  */
 359
 360 #if defined _AIX52 || defined AIX_WEAK_SUPPORT
 361 #undef C_WEAKEXT
 362 #define C_WEAKEXT       C_AIX_WEAKEXT
 363 #endif
 364
 365  /* storage classes for stab symbols for RS/6000 */
 366 #define C_GSYM          (0x80)
 367 #define C_LSYM          (0x81)
 368 #define C_PSYM          (0x82)
 369 #define C_RSYM          (0x83)
 370 #define C_RPSYM         (0x84)
 371 #define C_STSYM         (0x85)
 372 #define C_TCSYM         (0x86)
 373 #define C_BCOMM         (0x87)
 374 #define C_ECOML         (0x88)
 375 #define C_ECOMM         (0x89)
 376 #define C_DECL          (0x8c)
 377 #define C_ENTRY         (0x8d)
 378 #define C_FUN           (0x8e)
 379 #define C_BSTAT         (0x8f)
 380 #define C_ESTAT         (0x90)
 381 #define C_GTLS          (0x97)
 382 #define C_STTLS         (0x98)
 383
 384 /* Storage classes for Thumb symbols */
 385 #define C_THUMBEXT      (128 + C_EXT)           /* 130 */
 386 #define C_THUMBSTAT     (128 + C_STAT)          /* 131 */
 387 #define C_THUMBLABEL    (128 + C_LABEL)         /* 134 */
 388 #define C_THUMBEXTFUNC  (C_THUMBEXT  + 20)      /* 150 */
 389 #define C_THUMBSTATFUNC (C_THUMBSTAT + 20)      /* 151 */
 390
 391 /* True if XCOFF symbols of class CLASS have auxillary csect information.  */
 392 #define CSECT_SYM_P(CLASS) \
 393   ((CLASS) == C_EXT || (CLASS) == C_AIX_WEAKEXT || (CLASS) == C_HIDEXT)
 394
 395 /********************** SECTION HEADER **********************/
 396
 397 #define SCNNMLEN (8)
 398
 399 struct internal_scnhdr
 400 {
 401   char s_name[SCNNMLEN] ATTRIBUTE_NONSTRING;    /* section name */
 402
 403   /* Physical address, aliased s_nlib.
 404      In the pei format, this field is the virtual section size
 405      (the size of the section after being loaded int memory),
 406      NOT the physical address.  */
 407   bfd_vma s_paddr;
 408
 409   bfd_vma s_vaddr;              /* virtual address              */
 410   bfd_vma s_size;               /* section size                 */
 411   bfd_vma s_scnptr;             /* file ptr to raw data for section */
 412   bfd_vma s_relptr;             /* file ptr to relocation       */
 413   bfd_vma s_lnnoptr;            /* file ptr to line numbers     */
 414   unsigned long s_nreloc;       /* number of relocation entries */
 415   unsigned long s_nlnno;        /* number of line number entries*/
 416   long s_flags;                 /* flags                        */
 417   unsigned char s_page;         /* TI COFF load page            */
 418 };
 419
 420 /* s_flags "type".  */
 421 #define STYP_REG         (0x0000)       /* "regular": allocated, relocated, loaded */
 422 #define STYP_DSECT       (0x0001)       /* "dummy":  relocated only*/
 423 #define STYP_NOLOAD      (0x0002)       /* "noload": allocated, relocated, not loaded */
 424 #define STYP_GROUP       (0x0004)       /* "grouped": formed of input sections */
 425 #define STYP_PAD         (0x0008)       /* "padding": not allocated, not relocated, loaded */
 426 #define STYP_COPY        (0x0010)       /* "copy": for decision function used by field update;  not allocated, not relocated,
 427                                                                              loaded; reloc & lineno entries processed normally */
 428 #define STYP_TEXT        (0x0020)       /* section contains text only */
 429 #define S_SHRSEG         (0x0020)       /* In 3b Update files (output of ogen), sections which appear in SHARED segments of the Pfile
 430                                                                              will have the S_SHRSEG flag set by ogen, to inform dufr that updating 1 copy of the proc. will
 431                                                                              update all process invocations. */
 432 #define STYP_DATA        (0x0040)       /* section contains data only */
 433 #define STYP_BSS         (0x0080)       /* section contains bss only */
 434 #define S_NEWFCN         (0x0100)       /* In a minimal file or an update file, a new function (as compared with a replaced function) */
 435 #define STYP_INFO        (0x0200)       /* comment: not allocated not relocated, not loaded */
 436 #define STYP_OVER        (0x0400)       /* overlay: relocated not allocated or loaded */
 437 #define STYP_LIB         (0x0800)       /* for .lib: same as INFO */
 438 #define STYP_MERGE       (0x2000)       /* merge section -- combines with text, data or bss sections only */
 439 #define STYP_REVERSE_PAD (0x4000)       /* section will be padded with no-op instructions
 440                                            wherever padding is necessary and there is a
 441                                            word of contiguous bytes beginning on a word
 442                                            boundary. */
 443
 444 #define STYP_LIT        0x8020  /* Literal data (like STYP_TEXT) */
 445
 446
 447 /********************** LINE NUMBERS **********************/
 448
 449 /* 1 line number entry for every "breakpointable" source line in a section.
 450    Line numbers are grouped on a per function basis; first entry in a function
 451    grouping will have l_lnno = 0 and in place of physical address will be the
 452    symbol table index of the function name.  */
 453
 454 struct internal_lineno
 455 {
 456   union
 457   {
 458     bfd_signed_vma l_symndx;            /* function name symbol index, iff l_lnno == 0*/
 459     bfd_signed_vma l_paddr;             /* (physical) address of line number    */
 460   }     l_addr;
 461   unsigned long l_lnno;         /* line number          */
 462 };
 463
 464 /********************** SYMBOLS **********************/
 465
 466 #define SYMNMLEN        8       /* # characters in a symbol name        */
 467 #define FILNMLEN        14      /* # characters in a file name          */
 468 #define DIMNUM          4       /* # array dimensions in auxiliary entry */
 469
 470 struct internal_syment
 471 {
 472   union
 473   {
 474     char _n_name[SYMNMLEN] ATTRIBUTE_NONSTRING; /* old COFF version     */
 475     struct
 476     {
 477       bfd_hostptr_t _n_zeroes;  /* new == 0                     */
 478       bfd_hostptr_t _n_offset;  /* offset into string table     */
 479     }      _n_n;
 480     char *_n_nptr[2];           /* allows for overlaying        */
 481   }     _n;
 482   bfd_vma n_value;              /* value of symbol              */
 483   int n_scnum;                  /* section number               */
 484   unsigned short n_flags;       /* copy of flags from filhdr    */
 485   unsigned short n_type;        /* type and derived type        */
 486   unsigned char n_sclass;       /* storage class                */
 487   unsigned char n_numaux;       /* number of aux. entries       */
 488 };
 489
 490 #define n_name          _n._n_name
 491 #define n_zeroes        _n._n_n._n_zeroes
 492 #define n_offset        _n._n_n._n_offset
 493
 494 /* Relocatable symbols have number of the section in which they are defined,
 495    or one of the following:  */
 496
 497 #define N_UNDEF ((int)0)        /* undefined symbol */
 498 #define N_ABS   ((int)-1)       /* value of symbol is absolute */
 499 #define N_DEBUG ((int)-2)       /* debugging symbol -- value is meaningless */
 500 #define N_TV    ((int)-3)       /* indicates symbol needs preload transfer vector */
 501 #define P_TV    ((int)-4)       /* indicates symbol needs postload transfer vector*/
 502
 503 /* Type of a symbol, in low N bits of the word.  */
 504
 505 #define T_NULL          0
 506 #define T_VOID          1       /* function argument (only used by compiler) */
 507 #define T_CHAR          2       /* character            */
 508 #define T_SHORT         3       /* short integer        */
 509 #define T_INT           4       /* integer              */
 510 #define T_LONG          5       /* long integer         */
 511 #define T_FLOAT         6       /* floating point       */
 512 #define T_DOUBLE        7       /* double word          */
 513 #define T_STRUCT        8       /* structure            */
 514 #define T_UNION         9       /* union                */
 515 #define T_ENUM          10      /* enumeration          */
 516 #define T_MOE           11      /* member of enumeration*/
 517 #define T_UCHAR         12      /* unsigned character   */
 518 #define T_USHORT        13      /* unsigned short       */
 519 #define T_UINT          14      /* unsigned integer     */
 520 #define T_ULONG         15      /* unsigned long        */
 521 #define T_LNGDBL        16      /* long double          */
 522
 523 /* Derived types, in n_type.  */
 524
 525 #define DT_NON          (0)     /* no derived type */
 526 #define DT_PTR          (1)     /* pointer */
 527 #define DT_FCN          (2)     /* function */
 528 #define DT_ARY          (3)     /* array */
 529
 530 #define BTYPE(x)        ((x) & N_BTMASK)
 531 #define DTYPE(x)        (((x) & N_TMASK) >> N_BTSHFT)
 532
 533 #define ISPTR(x) \
 534   (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_PTR << N_BTSHFT))
 535 #define ISFCN(x) \
 536   (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_FCN << N_BTSHFT))
 537 #define ISARY(x) \
 538   (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_ARY << N_BTSHFT))
 539 #define ISTAG(x) \
 540   ((x) == C_STRTAG || (x) == C_UNTAG || (x) == C_ENTAG)
 541 #define DECREF(x) \
 542   ((((x) >> N_TSHIFT) & ~ N_BTMASK) | ((x) & N_BTMASK))
 543
 544 union internal_auxent
 545 {
 546   struct
 547   {
 548
 549     union
 550     {
 551       long l;                   /* str, un, or enum tag indx */
 552       struct coff_ptr_struct *p;
 553     }     x_tagndx;
 554
 555     union
 556     {
 557       struct
 558       {
 559         unsigned short x_lnno;  /* declaration line number */
 560         unsigned short x_size;  /* str/union/array size */
 561       }      x_lnsz;
 562       long x_fsize;             /* size of function */
 563     }     x_misc;
 564
 565     union
 566     {
 567       struct
 568       {                         /* if ISFCN, tag, or .bb */
 569         bfd_signed_vma x_lnnoptr;               /* ptr to fcn line # */
 570         union
 571         {                       /* entry ndx past block end */
 572           long l;
 573           struct coff_ptr_struct *p;
 574         }     x_endndx;
 575       }      x_fcn;
 576
 577       struct
 578       {                         /* if ISARY, up to 4 dimen. */
 579         unsigned short x_dimen[DIMNUM];
 580       }      x_ary;
 581     }     x_fcnary;
 582
 583     unsigned short x_tvndx;     /* tv index */
 584   }      x_sym;
 585
 586   union
 587   {
 588     /* PR 17754: We use to FILNMLEN for the size of the x_fname
 589        array, but that cause problems as PE targets use a larger
 590        value.  We cannot use their definition of EFILNMLEN as this
 591        header can be used without including any PE headers.  */
 592     char x_fname[20];
 593     struct
 594     {
 595       long x_zeroes;
 596       long x_offset;
 597     }      x_n;
 598   }     x_file;
 599
 600   struct
 601   {
 602     long x_scnlen;              /* section length */
 603     unsigned short x_nreloc;    /* # relocation entries */
 604     unsigned short x_nlinno;    /* # line numbers */
 605     unsigned long x_checksum;   /* section COMDAT checksum for PE */
 606     unsigned short x_associated; /* COMDAT associated section index for PE */
 607     unsigned char x_comdat;     /* COMDAT selection number for PE */
 608   }      x_scn;
 609
 610   struct
 611   {
 612     long x_tvfill;              /* tv fill value */
 613     unsigned short x_tvlen;     /* length of .tv */
 614     unsigned short x_tvran[2];  /* tv range */
 615   }      x_tv;                  /* info about .tv section (in auxent of symbol .tv)) */
 616
 617   /******************************************
 618    * RS/6000-specific auxent - last auxent for every external symbol
 619    ******************************************/
 620   struct
 621   {
 622     union
 623       {                         /* csect length or enclosing csect */
 624         bfd_signed_vma l;
 625         struct coff_ptr_struct *p;
 626       } x_scnlen;
 627     long x_parmhash;            /* parm type hash index */
 628     unsigned short x_snhash;    /* sect num with parm hash */
 629     unsigned char x_smtyp;      /* symbol align and type */
 630     /* 0-4 - Log 2 of alignment */
 631     /* 5-7 - symbol type */
 632     unsigned char x_smclas;     /* storage mapping class */
 633     long x_stab;                /* dbx stab info index */
 634     unsigned short x_snstab;    /* sect num with dbx stab */
 635   }      x_csect;               /* csect definition information */
 636
 637 /* x_smtyp values:  */
 638
 639 #define SMTYP_ALIGN(x)  ((x) >> 3)      /* log2 of alignment */
 640 #define SMTYP_SMTYP(x)  ((x) & 0x7)     /* symbol type */
 641 /* Symbol type values:  */
 642 #define XTY_ER  0               /* External reference */
 643 #define XTY_SD  1               /* Csect definition */
 644 #define XTY_LD  2               /* Label definition */
 645 #define XTY_CM  3               /* .BSS */
 646 #define XTY_EM  4               /* Error message */
 647 #define XTY_US  5               /* "Reserved for internal use" */
 648
 649 /* x_smclas values:  */
 650
 651 #define XMC_PR  0               /* Read-only program code */
 652 #define XMC_RO  1               /* Read-only constant */
 653 #define XMC_DB  2               /* Read-only debug dictionary table */
 654 #define XMC_TC  3               /* Read-write general TOC entry */
 655 #define XMC_UA  4               /* Read-write unclassified */
 656 #define XMC_RW  5               /* Read-write data */
 657 #define XMC_GL  6               /* Read-only global linkage */
 658 #define XMC_XO  7               /* Read-only extended operation */
 659 #define XMC_SV  8               /* Read-only supervisor call */
 660 #define XMC_BS  9               /* Read-write BSS */
 661 #define XMC_DS  10              /* Read-write descriptor csect */
 662 #define XMC_UC  11              /* Read-write unnamed Fortran common */
 663 #define XMC_TI  12              /* Read-only traceback index csect */
 664 #define XMC_TB  13              /* Read-only traceback table csect */
 665 /*              14      ??? */
 666 #define XMC_TC0 15              /* Read-write TOC anchor */
 667 #define XMC_TD  16              /* Read-write data in TOC */
 668 };
 669
 670 /********************** RELOCATION DIRECTIVES **********************/
 671
 672 struct internal_reloc
 673 {
 674   bfd_vma r_vaddr;              /* Virtual address of reference */
 675   long r_symndx;                /* Index into symbol table      */
 676   unsigned short r_type;        /* Relocation type              */
 677   unsigned char r_size;         /* Used by RS/6000 and ECOFF    */
 678   unsigned char r_extern;       /* Used by ECOFF                */
 679   unsigned long r_offset;       /* Used by Alpha ECOFF, SPARC, others */
 680 };
 681
 682 /* X86-64 relocations.  */
 683 #define R_AMD64_ABS              0 /* Reference is absolute, no relocation is necessary.  */
 684 #define R_AMD64_DIR64            1 /* 64-bit address (VA).  */
 685 #define R_AMD64_DIR32            2 /* 32-bit address (VA) R_DIR32.  */
 686 #define R_AMD64_IMAGEBASE        3 /* 32-bit absolute ref w/o base R_IMAGEBASE.  */
 687 #define R_AMD64_PCRLONG          4 /* 32-bit relative address from byte following reloc R_PCRLONG.  */
 688 #define R_AMD64_PCRLONG_1        5 /* 32-bit relative address from byte distance 1 from reloc.  */
 689 #define R_AMD64_PCRLONG_2        6 /* 32-bit relative address from byte distance 2 from reloc.  */
 690 #define R_AMD64_PCRLONG_3        7 /* 32-bit relative address from byte distance 3 from reloc.  */
 691 #define R_AMD64_PCRLONG_4        8 /* 32-bit relative address from byte distance 4 from reloc.  */
 692 #define R_AMD64_PCRLONG_5        9 /* 32-bit relative address from byte distance 5 from reloc.  */
 693 #define R_AMD64_SECTION         10 /* Section index.  */
 694 #define R_AMD64_SECREL          11 /* 32 bit offset from base of section containing target R_SECREL.  */
 695 #define R_AMD64_SECREL7         12 /* 7 bit unsigned offset from base of section containing target.  */
 696 #define R_AMD64_TOKEN           13 /* 32 bit metadata token.  */
 697 #define R_AMD64_PCRQUAD         14 /* Pseude PC64 relocation - Note: not specified by MS/AMD but need for gas pc-relative 64bit wide relocation generated by ELF.  */
 698
 699 /* i386 Relocations.  */
 700
 701 #define R_DIR16          1
 702 #define R_REL24          5
 703 #define R_DIR32          6
 704 #define R_IMAGEBASE      7
 705 #define R_SECREL32      11
 706 #define R_RELBYTE       15
 707 #define R_RELWORD       16
 708 #define R_RELLONG       17
 709 #define R_PCRBYTE       18
 710 #define R_PCRWORD       19
 711 #define R_PCRLONG       20
 712 #define R_PCR24         21
 713 #define R_IPRSHORT      24
 714 #define R_IPRLONG       26
 715 #define R_GETSEG        29
 716 #define R_GETPA         30
 717 #define R_TAGWORD       31
 718 #define R_JUMPTARG      32      /* strange 29k 00xx00xx reloc */
 719 #define R_PARTLS16      32
 720 #define R_PARTMS8       33
 721
 722 #define R_PCR16L       128
 723 #define R_PCR26L       129
 724 #define R_VRT16        130
 725 #define R_HVRT16       131
 726 #define R_LVRT16       132
 727 #define R_VRT32        133
 728
 729
 730 /* This reloc identifies mov.b instructions with a 16bit absolute
 731    address.  The linker tries to turn insns with this reloc into
 732    an absolute 8-bit address.  */
 733 #define R_MOV16B1       0x41
 734
 735 /* This reloc identifies mov.b instructions which had a 16bit
 736    absolute address which have been shortened into a 8-bit
 737    absolute address.  */
 738 #define R_MOV16B2       0x42
 739
 740 /* This reloc identifies jmp insns with a 16bit target address;
 741    the linker tries to turn these insns into bra insns with
 742    an 8bit pc-relative target.  */
 743 #define R_JMP1          0x43
 744
 745 /* This reloc identifies a bra with an 8-bit pc-relative
 746    target that was formerly a jmp insn with a 16bit target.  */
 747 #define R_JMP2          0x44
 748
 749 /* ??? */
 750 #define R_RELLONG_NEG   0x45
 751
 752 /* This reloc identifies jmp insns with a 24bit target address;
 753    the linker tries to turn these insns into bra insns with
 754    an 8bit pc-relative target.  */
 755 #define R_JMPL1         0x46
 756
 757 /* This reloc identifies a bra with an 8-bit pc-relative
 758    target that was formerly a jmp insn with a 24bit target.  */
 759 #define R_JMPL2         0x47
 760
 761 /* This reloc identifies mov.b instructions with a 24bit absolute
 762    address.  The linker tries to turn insns with this reloc into
 763    an absolute 8-bit address.  */
 764
 765 #define R_MOV24B1       0x48
 766
 767 /* This reloc identifies mov.b instructions which had a 24bit
 768    absolute address which have been shortened into a 8-bit
 769    absolute address.  */
 770 #define R_MOV24B2       0x49
 771
 772 /* An h8300 memory indirect jump/call.  Forces the address of the jump/call
 773    target into the function vector (in page zero), and the address of the
 774    vector entry to be placed in the jump/call instruction.  */
 775 #define R_MEM_INDIRECT  0x4a
 776
 777 /* This reloc identifies a 16bit pc-relative branch target which was
 778    shortened into an 8bit pc-relative branch target.  */
 779 #define R_PCRWORD_B     0x4b
 780
 781 /* This reloc identifies mov.[wl] instructions with a 32/24 bit
 782    absolute address; the linker may turn this into a mov.[wl]
 783    insn with a 16bit absolute address.  */
 784 #define R_MOVL1         0x4c
 785
 786 /* This reloc identifies mov.[wl] insns which formerly had
 787    a 32/24bit absolute address and now have a 16bit absolute address.  */
 788 #define R_MOVL2         0x4d
 789
 790 /* This reloc identifies a bCC:8 which will have it's condition
 791    inverted and its target redirected to the target of the branch
 792    in the following insn.  */
 793 #define R_BCC_INV       0x4e
 794
 795 /* This reloc identifies a jmp instruction that has been deleted.  */
 796 #define R_JMP_DEL       0x4f
 797
 798 /* Z8k modes */
 799 #define R_IMM16   0x01          /* 16 bit abs */
 800 #define R_JR      0x02          /* jr  8 bit disp */
 801 #define R_IMM4L   0x23          /* low nibble */
 802 #define R_IMM8    0x22          /* 8 bit abs */
 803 #define R_IMM32   R_RELLONG     /* 32 bit abs */
 804 #define R_CALL    R_DA          /* Absolute address which could be a callr */
 805 #define R_JP      R_DA          /* Absolute address which could be a jp */
 806 #define R_REL16   0x04          /* 16 bit PC rel */
 807 #define R_CALLR   0x05          /* callr 12 bit disp */
 808 #define R_SEG     0x10          /* set if in segmented mode */
 809 #define R_IMM4H   0x24          /* high nibble */
 810 #define R_DISP7   0x25          /* djnz displacement */
 811
 812 /* Z80 modes */
 813 #define R_OFF8    0x32          /* 8 bit signed abs, for (i[xy]+d) */
 814 #define R_IMM24   0x33          /* 24 bit abs */
 815 /* R_JR, R_IMM8, R_IMM16, R_IMM32 - as for Z8k */
 816 #define R_BYTE0  0x34           /* first (lowest) 8 bits of multibyte value */
 817 #define R_BYTE1  0x35           /* second 8 bits of multibyte value */
 818 #define R_BYTE2  0x36           /* third 8 bits of multibyte value */
 819 #define R_BYTE3  0x37           /* fourth (highest) 8 bits of multibyte value */
 820 #define R_WORD0  0x38           /* lowest 16 bits of 32 or 24 bit value */
 821 #define R_WORD1  0x39           /* highest 16 bits of 32 or 24 bit value */
 822
 823 #endif /* GNU_COFF_INTERNAL_H */