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) 1999-2019 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 long 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
 161 /* Extra structure for a codeview debug record */
 162 #define CV_INFO_SIGNATURE_LENGTH 16
 163
 164 typedef struct _CODEVIEW_INFO
 165 {
 166   unsigned long CVSignature;
 167   char          Signature[CV_INFO_SIGNATURE_LENGTH];
 168   unsigned int  SignatureLength;
 169   unsigned long Age;
 170   // char PdbFileName[];
 171 } CODEVIEW_INFO;
 172
 173 /* Default image base for NT.  */
 174 #define NT_EXE_IMAGE_BASE 0x400000
 175 #define NT_DLL_IMAGE_BASE 0x10000000
 176
 177 /* Default image base for BeOS. */
 178 #define BEOS_EXE_IMAGE_BASE 0x80000000
 179 #define BEOS_DLL_IMAGE_BASE 0x10000000
 180
 181 /* Extra stuff in a PE aouthdr */
 182
 183 #define PE_DEF_SECTION_ALIGNMENT 0x1000
 184 #ifndef PE_DEF_FILE_ALIGNMENT
 185 # define PE_DEF_FILE_ALIGNMENT 0x200
 186 #endif
 187
 188 struct internal_extra_pe_aouthdr
 189 {
 190   /* FIXME: The following entries are in AOUTHDR.  But they aren't
 191      available internally in bfd.  We add them here so that objdump
 192      can dump them.  */
 193   /* The state of the image file.  */
 194   short Magic;
 195   /* Linker major version number.  */
 196   char MajorLinkerVersion;
 197   /* Linker minor version number.  */
 198   char MinorLinkerVersion;
 199   /* Total size of all code sections.  */
 200   bfd_vma SizeOfCode;
 201   /* Total size of all initialized data sections.  */
 202   bfd_vma SizeOfInitializedData;
 203   /* Total size of all uninitialized data sections.  */
 204   bfd_vma SizeOfUninitializedData;
 205   /* Address of entry point relative to image base.  */
 206   bfd_vma AddressOfEntryPoint;
 207   /* Address of the first code section relative to image base.  */
 208   bfd_vma BaseOfCode;
 209   /* Address of the first data section relative to image base.  */
 210   bfd_vma BaseOfData;
 211
 212   /* PE stuff  */
 213   bfd_vma ImageBase;            /* Address of specific location in memory that
 214                                    file is located, NT default 0x10000.  */
 215
 216   uint32_t SectionAlignment;    /* Section alignment default 0x1000.  */
 217   uint32_t FileAlignment;       /* File alignment default 0x200.  */
 218   short MajorOperatingSystemVersion; /* Minimum version of the operating.  */
 219   short MinorOperatingSystemVersion; /* System req'd for exe, default 1.  */
 220   short MajorImageVersion;      /* User defineable field to store version of */
 221   short MinorImageVersion;      /*  exe or dll being created, default to 0.  */
 222   short MajorSubsystemVersion;  /* Minimum subsystem version required to */
 223   short MinorSubsystemVersion;  /*  run exe; default to 3.1.  */
 224   uint32_t Reserved1;           /* Seems to be 0.  */
 225   uint32_t SizeOfImage;         /* Size of memory to allocate for prog.  */
 226   uint32_t SizeOfHeaders;       /* Size of PE header and section table.  */
 227   uint32_t CheckSum;            /* Set to 0.  */
 228   short Subsystem;
 229
 230   /* Type of subsystem exe uses for user interface,
 231      possible values:
 232      1 - NATIVE   Doesn't require a subsystem
 233      2 - WINDOWS_GUI runs in Windows GUI subsystem
 234      3 - WINDOWS_CUI runs in Windows char sub. (console app)
 235      5 - OS2_CUI runs in OS/2 character subsystem
 236      7 - POSIX_CUI runs in Posix character subsystem.  */
 237   unsigned short DllCharacteristics; /* flags for DLL init.  */
 238   bfd_vma SizeOfStackReserve;   /* Amount of memory to reserve.  */
 239   bfd_vma SizeOfStackCommit;    /* Amount of memory initially committed for
 240                                    initial thread's stack, default 0x1000.  */
 241   bfd_vma SizeOfHeapReserve;    /* Amount of virtual memory to reserve and */
 242   bfd_vma SizeOfHeapCommit;     /*  commit, don't know what to defaut it to.  */
 243   uint32_t LoaderFlags;         /* Can probably set to 0.  */
 244   uint32_t NumberOfRvaAndSizes; /* Number of entries in next entry, 16.  */
 245   IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];
 246 };
 247
 248 /********************** AOUT "OPTIONAL HEADER" **********************/
 249 struct internal_aouthdr
 250 {
 251   short magic;                  /* type of file                         */
 252   short vstamp;                 /* version stamp                        */
 253   bfd_vma tsize;                /* text size in bytes, padded to FW bdry*/
 254   bfd_vma dsize;                /* initialized data "  "                */
 255   bfd_vma bsize;                /* uninitialized data "   "             */
 256   bfd_vma entry;                /* entry pt.                            */
 257   bfd_vma text_start;           /* base of text used for this file */
 258   bfd_vma data_start;           /* base of data used for this file */
 259
 260   /* RS/6000 stuff */
 261   bfd_vma o_toc;                /* address of TOC                       */
 262   short o_snentry;              /* section number for entry point */
 263   short o_sntext;               /* section number for text      */
 264   short o_sndata;               /* section number for data      */
 265   short o_sntoc;                /* section number for toc       */
 266   short o_snloader;             /* section number for loader section */
 267   short o_snbss;                /* section number for bss       */
 268   short o_algntext;             /* max alignment for text       */
 269   short o_algndata;             /* max alignment for data       */
 270   short o_modtype;              /* Module type field, 1R,RE,RO  */
 271   short o_cputype;              /* Encoded CPU type             */
 272   bfd_vma o_maxstack;   /* max stack size allowed.      */
 273   bfd_vma o_maxdata;    /* max data size allowed.       */
 274
 275   /* ECOFF stuff */
 276   bfd_vma bss_start;            /* Base of bss section.         */
 277   bfd_vma gp_value;             /* GP register value.           */
 278   unsigned long gprmask;        /* General registers used.      */
 279   unsigned long cprmask[4];     /* Coprocessor registers used.  */
 280   unsigned long fprmask;        /* Floating pointer registers used.  */
 281
 282   /* Apollo stuff */
 283   long o_inlib;                 /* inlib data */
 284   long o_sri;                   /* Static Resource Information */
 285   long vid[2];                  /* Version id */
 286
 287   struct internal_extra_pe_aouthdr pe;
 288 };
 289
 290 /********************** STORAGE CLASSES **********************/
 291
 292 /* This used to be defined as -1, but now n_sclass is unsigned.  */
 293 #define C_EFCN          0xff    /* physical end of function     */
 294 #define C_NULL          0
 295 #define C_AUTO          1       /* automatic variable           */
 296 #define C_EXT           2       /* external symbol              */
 297 #define C_STAT          3       /* static                       */
 298 #define C_REG           4       /* register variable            */
 299 #define C_EXTDEF        5       /* external definition          */
 300 #define C_LABEL         6       /* label                        */
 301 #define C_ULABEL        7       /* undefined label              */
 302 #define C_MOS           8       /* member of structure          */
 303 #define C_ARG           9       /* function argument            */
 304 #define C_STRTAG        10      /* structure tag                */
 305 #define C_MOU           11      /* member of union              */
 306 #define C_UNTAG         12      /* union tag                    */
 307 #define C_TPDEF         13      /* type definition              */
 308 #define C_USTATIC       14      /* undefined static             */
 309 #define C_ENTAG         15      /* enumeration tag              */
 310 #define C_MOE           16      /* member of enumeration        */
 311 #define C_REGPARM       17      /* register parameter           */
 312 #define C_FIELD         18      /* bit field                    */
 313 #define C_AUTOARG       19      /* auto argument                */
 314 #define C_LASTENT       20      /* dummy entry (end of block)   */
 315 #define C_BLOCK         100     /* ".bb" or ".eb"               */
 316 #define C_FCN           101     /* ".bf" or ".ef"               */
 317 #define C_EOS           102     /* end of structure             */
 318 #define C_FILE          103     /* file name                    */
 319 #define C_LINE          104     /* line # reformatted as symbol table entry */
 320 #define C_ALIAS         105     /* duplicate tag                */
 321 #define C_HIDDEN        106     /* ext symbol in dmert public lib */
 322 #define C_WEAKEXT       127     /* weak symbol -- GNU extension.  */
 323
 324 /* New storage classes for TI COFF */
 325 #define C_UEXT          19      /* Tentative external definition */
 326 #define C_STATLAB       20      /* Static load time label */
 327 #define C_EXTLAB        21      /* External load time label */
 328 #define C_SYSTEM        23      /* System Wide variable */
 329
 330 /* New storage classes for WINDOWS_NT   */
 331 #define C_SECTION       104     /* section name */
 332 #define C_NT_WEAK       105     /* weak external */
 333
 334  /* New storage classes for 80960 */
 335
 336 /* C_LEAFPROC is obsolete.  Use C_LEAFEXT or C_LEAFSTAT */
 337 #define C_LEAFPROC      108     /* Leaf procedure, "call" via BAL */
 338
 339 #define C_SCALL         107     /* Procedure reachable via system call */
 340 #define C_LEAFEXT       108     /* External leaf */
 341 #define C_LEAFSTAT      113     /* Static leaf */
 342 #define C_OPTVAR        109     /* Optimized variable           */
 343 #define C_DEFINE        110     /* Preprocessor #define         */
 344 #define C_PRAGMA        111     /* Advice to compiler or linker */
 345 #define C_SEGMENT       112     /* 80960 segment name           */
 346
 347  /* New storage classes for RS/6000 */
 348 #define C_HIDEXT        107     /* Un-named external symbol */
 349 #define C_BINCL         108     /* Marks beginning of include file */
 350 #define C_EINCL         109     /* Marks ending of include file */
 351 #define C_AIX_WEAKEXT   111     /* AIX definition of C_WEAKEXT.  */
 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 auxillary 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   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 cause problems as PE targets use a larger
 585        value.  We cannot use their definition of EFILNMLEN 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
 665 /********************** RELOCATION DIRECTIVES **********************/
 666
 667 struct internal_reloc
 668 {
 669   bfd_vma r_vaddr;              /* Virtual address of reference */
 670   long r_symndx;                /* Index into symbol table      */
 671   unsigned short r_type;        /* Relocation type              */
 672   unsigned char r_size;         /* Used by RS/6000 and ECOFF    */
 673   unsigned char r_extern;       /* Used by ECOFF                */
 674   unsigned long r_offset;       /* Used by Alpha ECOFF, SPARC, others */
 675 };
 676
 677 /* X86-64 relocations.  */
 678 #define R_AMD64_ABS              0 /* Reference is absolute, no relocation is necessary.  */
 679 #define R_AMD64_DIR64            1 /* 64-bit address (VA).  */
 680 #define R_AMD64_DIR32            2 /* 32-bit address (VA) R_DIR32.  */
 681 #define R_AMD64_IMAGEBASE        3 /* 32-bit absolute ref w/o base R_IMAGEBASE.  */
 682 #define R_AMD64_PCRLONG          4 /* 32-bit relative address from byte following reloc R_PCRLONG.  */
 683 #define R_AMD64_PCRLONG_1        5 /* 32-bit relative address from byte distance 1 from reloc.  */
 684 #define R_AMD64_PCRLONG_2        6 /* 32-bit relative address from byte distance 2 from reloc.  */
 685 #define R_AMD64_PCRLONG_3        7 /* 32-bit relative address from byte distance 3 from reloc.  */
 686 #define R_AMD64_PCRLONG_4        8 /* 32-bit relative address from byte distance 4 from reloc.  */
 687 #define R_AMD64_PCRLONG_5        9 /* 32-bit relative address from byte distance 5 from reloc.  */
 688 #define R_AMD64_SECTION         10 /* Section index.  */
 689 #define R_AMD64_SECREL          11 /* 32 bit offset from base of section containing target R_SECREL.  */
 690 #define R_AMD64_SECREL7         12 /* 7 bit unsigned offset from base of section containing target.  */
 691 #define R_AMD64_TOKEN           13 /* 32 bit metadata token.  */
 692 #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.  */
 693
 694 /* i386 Relocations.  */
 695
 696 #define R_DIR16          1
 697 #define R_REL24          5
 698 #define R_DIR32          6
 699 #define R_IMAGEBASE      7
 700 #define R_SECREL32      11
 701 #define R_RELBYTE       15
 702 #define R_RELWORD       16
 703 #define R_RELLONG       17
 704 #define R_PCRBYTE       18
 705 #define R_PCRWORD       19
 706 #define R_PCRLONG       20
 707 #define R_PCR24         21
 708 #define R_IPRSHORT      24
 709 #define R_IPRLONG       26
 710 #define R_GETSEG        29
 711 #define R_GETPA         30
 712 #define R_TAGWORD       31
 713 #define R_JUMPTARG      32      /* strange 29k 00xx00xx reloc */
 714 #define R_PARTLS16      32
 715 #define R_PARTMS8       33
 716
 717 #define R_PCR16L       128
 718 #define R_PCR26L       129
 719 #define R_VRT16        130
 720 #define R_HVRT16       131
 721 #define R_LVRT16       132
 722 #define R_VRT32        133
 723
 724
 725 /* This reloc identifies mov.b instructions with a 16bit absolute
 726    address.  The linker tries to turn insns with this reloc into
 727    an absolute 8-bit address.  */
 728 #define R_MOV16B1       0x41
 729
 730 /* This reloc identifies mov.b instructions which had a 16bit
 731    absolute address which have been shortened into a 8-bit
 732    absolute address.  */
 733 #define R_MOV16B2       0x42
 734
 735 /* This reloc identifies jmp insns with a 16bit target address;
 736    the linker tries to turn these insns into bra insns with
 737    an 8bit pc-relative target.  */
 738 #define R_JMP1          0x43
 739
 740 /* This reloc identifies a bra with an 8-bit pc-relative
 741    target that was formerly a jmp insn with a 16bit target.  */
 742 #define R_JMP2          0x44
 743
 744 /* ??? */
 745 #define R_RELLONG_NEG   0x45
 746
 747 /* This reloc identifies jmp insns with a 24bit target address;
 748    the linker tries to turn these insns into bra insns with
 749    an 8bit pc-relative target.  */
 750 #define R_JMPL1         0x46
 751
 752 /* This reloc identifies a bra with an 8-bit pc-relative
 753    target that was formerly a jmp insn with a 24bit target.  */
 754 #define R_JMPL2         0x47
 755
 756 /* This reloc identifies mov.b instructions with a 24bit absolute
 757    address.  The linker tries to turn insns with this reloc into
 758    an absolute 8-bit address.  */
 759
 760 #define R_MOV24B1       0x48
 761
 762 /* This reloc identifies mov.b instructions which had a 24bit
 763    absolute address which have been shortened into a 8-bit
 764    absolute address.  */
 765 #define R_MOV24B2       0x49
 766
 767 /* An h8300 memory indirect jump/call.  Forces the address of the jump/call
 768    target into the function vector (in page zero), and the address of the
 769    vector entry to be placed in the jump/call instruction.  */
 770 #define R_MEM_INDIRECT  0x4a
 771
 772 /* This reloc identifies a 16bit pc-relative branch target which was
 773    shortened into an 8bit pc-relative branch target.  */
 774 #define R_PCRWORD_B     0x4b
 775
 776 /* This reloc identifies mov.[wl] instructions with a 32/24 bit
 777    absolute address; the linker may turn this into a mov.[wl]
 778    insn with a 16bit absolute address.  */
 779 #define R_MOVL1         0x4c
 780
 781 /* This reloc identifies mov.[wl] insns which formerly had
 782    a 32/24bit absolute address and now have a 16bit absolute address.  */
 783 #define R_MOVL2         0x4d
 784
 785 /* This reloc identifies a bCC:8 which will have it's condition
 786    inverted and its target redirected to the target of the branch
 787    in the following insn.  */
 788 #define R_BCC_INV       0x4e
 789
 790 /* This reloc identifies a jmp instruction that has been deleted.  */
 791 #define R_JMP_DEL       0x4f
 792
 793 /* Z8k modes */
 794 #define R_IMM16   0x01          /* 16 bit abs */
 795 #define R_JR      0x02          /* jr  8 bit disp */
 796 #define R_IMM4L   0x23          /* low nibble */
 797 #define R_IMM8    0x22          /* 8 bit abs */
 798 #define R_IMM32   R_RELLONG     /* 32 bit abs */
 799 #define R_CALL    R_DA          /* Absolute address which could be a callr */
 800 #define R_JP      R_DA          /* Absolute address which could be a jp */
 801 #define R_REL16   0x04          /* 16 bit PC rel */
 802 #define R_CALLR   0x05          /* callr 12 bit disp */
 803 #define R_SEG     0x10          /* set if in segmented mode */
 804 #define R_IMM4H   0x24          /* high nibble */
 805 #define R_DISP7   0x25          /* djnz displacement */
 806
 807 /* Z80 modes */
 808 #define R_OFF8    0x32          /* 8 bit signed abs, for (i[xy]+d) */
 809 #define R_IMM24   0x33          /* 24 bit abs */
 810 /* R_JR, R_IMM8, R_IMM16, R_IMM32 - as for Z8k */
 811
 812 #endif /* GNU_COFF_INTERNAL_H */