include/hp-symtab.h

   1 /* Definitions and structures for reading debug symbols from the
   2    native HP C compiler.
   3
   4    Written by the Center for Software Science at the University of Utah
   5    and by Cygnus Support.
   6
   7    Copyright (C) 1994-2019 Free Software Foundation, Inc.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  22    MA 02110-1301, USA.  */
  23
  24 #ifndef HP_SYMTAB_INCLUDED
  25 #define HP_SYMTAB_INCLUDED
  26
  27 /* General information:
  28
  29    This header file defines and describes only the data structures
  30    necessary to read debug symbols produced by the HP C compiler,
  31    HP ANSI C++ compiler, and HP FORTRAN 90 compiler using the
  32    SOM object file format.
  33    (For a full description of the debug format, ftp hpux-symtab.h from
  34    jaguar.cs.utah.edu:/dist).
  35
  36    Additional notes (Rich Title)
  37    This file is a reverse-engineered version of a file called
  38    "symtab.h" which exists internal to HP's Computer Languages Organization
  39    in /CLO/Components/DDE/obj/som/symtab.h. Because HP's version of
  40    the file is copyrighted and not distributed, it is necessary for
  41    GDB to use the reverse-engineered version that follows.
  42    Work was done by Cygnus to reverse-engineer the C subset of symtab.h.
  43    The WDB project has extended this to also contain the C++
  44    symbol definitions, the F90 symbol definitions,
  45    and the DOC (debugging-optimized-code) symbol definitions.
  46    In some cases (the C++ symbol definitions)
  47    I have added internal documentation here that
  48    goes beyond what is supplied in HP's symtab.h. If we someday
  49    unify these files again, the extra comments should be merged back
  50    into HP's symtab.h.
  51
  52    -------------------------------------------------------------------
  53
  54    Debug symbols are contained entirely within an unloadable space called
  55    $DEBUG$.  $DEBUG$ contains several subspaces which group related
  56    debug symbols.
  57
  58    $GNTT$ contains information for global variables, types and contants.
  59
  60    $LNTT$ contains information for procedures (including nesting), scoping
  61    information, local variables, types, and constants.
  62
  63    $SLT$ contains source line information so that code addresses may be
  64    mapped to source lines.
  65
  66    $VT$ contains various strings and constants for named objects (variables,
  67    typedefs, functions, etc).  Strings are stored as null-terminated character
  68    lists.  Constants always begin on word boundaries.  The first byte of
  69    the VT must be zero (a null string).
  70
  71    $XT$ is not currently used by GDB.
  72
  73    Many structures within the subspaces point to other structures within
  74    the same subspace, or to structures within a different subspace.  These
  75    pointers are represented as a structure index from the beginning of
  76    the appropriate subspace.  */
  77
  78 /* Used to describe where a constant is stored.  */
  79 enum location_type
  80 {
  81   LOCATION_IMMEDIATE,
  82   LOCATION_PTR,
  83   LOCATION_VT,
  84 };
  85
  86 /* Languages supported by this debug format.  Within the data structures
  87    this type is limited to 4 bits for a maximum of 16 languages.  */
  88 enum hp_language
  89 {
  90   HP_LANGUAGE_UNKNOWN,
  91   HP_LANGUAGE_C,
  92   HP_LANGUAGE_FORTRAN,
  93   HP_LANGUAGE_F77 = HP_LANGUAGE_FORTRAN,
  94   HP_LANGUAGE_PASCAL,
  95   HP_LANGUAGE_MODCAL,
  96   HP_LANGUAGE_COBOL,
  97   HP_LANGUAGE_BASIC,
  98   HP_LANGUAGE_ADA,
  99   HP_LANGUAGE_CPLUSPLUS,
 100   HP_LANGUAGE_DMPASCAL
 101 };
 102
 103
 104 /* Basic data types available in this debug format.  Within the data
 105    structures this type is limited to 5 bits for a maximum of 32 basic
 106    data types.  */
 107 enum hp_type
 108 {
 109   HP_TYPE_UNDEFINED, /* 0 */
 110   HP_TYPE_BOOLEAN, /* 1 */
 111   HP_TYPE_CHAR, /* 2 */
 112   HP_TYPE_INT, /* 3 */
 113   HP_TYPE_UNSIGNED_INT, /* 4 */
 114   HP_TYPE_REAL, /* 5 */
 115   HP_TYPE_COMPLEX, /* 6 */
 116   HP_TYPE_STRING200, /* 7 */
 117   HP_TYPE_LONGSTRING200, /* 8 */
 118   HP_TYPE_TEXT, /* 9 */
 119   HP_TYPE_FLABEL, /* 10 */
 120   HP_TYPE_FTN_STRING_SPEC, /* 11 */
 121   HP_TYPE_MOD_STRING_SPEC, /* 12 */
 122   HP_TYPE_PACKED_DECIMAL, /* 13 */
 123   HP_TYPE_REAL_3000, /* 14 */
 124   HP_TYPE_MOD_STRING_3000, /* 15 */
 125   HP_TYPE_ANYPOINTER, /* 16 */
 126   HP_TYPE_GLOBAL_ANYPOINTER, /* 17 */
 127   HP_TYPE_LOCAL_ANYPOINTER, /* 18 */
 128   HP_TYPE_COMPLEXS3000, /* 19 */
 129   HP_TYPE_FTN_STRING_S300_COMPAT, /* 20 */
 130   HP_TYPE_FTN_STRING_VAX_COMPAT, /* 21 */
 131   HP_TYPE_BOOLEAN_S300_COMPAT, /* 22 */
 132   HP_TYPE_BOOLEAN_VAX_COMPAT, /* 23 */
 133   HP_TYPE_WIDE_CHAR, /* 24 */
 134   HP_TYPE_LONG, /* 25 */
 135   HP_TYPE_UNSIGNED_LONG, /* 26 */
 136   HP_TYPE_DOUBLE, /* 27 */
 137   HP_TYPE_TEMPLATE_ARG, /* 28 */
 138   HP_TYPE_VOID /* 29 */
 139 };
 140
 141 /* An immediate name and type table entry.
 142
 143    extension and immediate will always be one.
 144    global will always be zero.
 145    hp_type is the basic type this entry describes.
 146    bitlength is the length in bits for the basic type.  */
 147 struct dnttp_immediate
 148 {
 149   unsigned int extension:       1;
 150   unsigned int immediate:       1;
 151   unsigned int global:          1;
 152   unsigned int type:            5;
 153   unsigned int bitlength:       24;
 154 };
 155
 156 /* A nonimmediate name and type table entry.
 157
 158    extension will always be one.
 159    immediate will always be zero.
 160    if global is zero, this entry points into the LNTT
 161    if global is one, this entry points into the GNTT
 162    index is the index within the GNTT or LNTT for this entry.  */
 163 struct dnttp_nonimmediate
 164 {
 165   unsigned int extension:       1;
 166   unsigned int immediate:       1;
 167   unsigned int global:          1;
 168   unsigned int index:           29;
 169 };
 170
 171 /* A pointer to an entry in the GNTT and LNTT tables.  It has two
 172    forms depending on the type being described.
 173
 174    The immediate form is used for simple entries and is one
 175    word.
 176
 177    The nonimmediate form is used for complex entries and contains
 178    an index into the LNTT or GNTT which describes the entire type.
 179
 180    If a dnttpointer is -1, then it is a NIL entry.  */
 181
 182 #define DNTTNIL (-1)
 183 typedef union dnttpointer
 184 {
 185   struct dnttp_immediate    dntti;
 186   struct dnttp_nonimmediate dnttp;
 187   int word;
 188 } dnttpointer;
 189
 190 /* An index into the source line table.  As with dnttpointers, a sltpointer
 191    of -1 indicates a NIL entry.  */
 192 #define SLTNIL (-1)
 193 typedef int sltpointer;
 194
 195 /* Index into DOC (= "Debugging Optimized Code") line table.  */
 196 #define LTNIL (-1)
 197 typedef int ltpointer;
 198
 199 /* Index into context table.  */
 200 #define CTXTNIL (-1)
 201 typedef int ctxtpointer;
 202
 203 /* Unsigned byte offset into the VT.  */
 204 typedef unsigned int vtpointer;
 205
 206 /* A DNTT entry (used within the GNTT and LNTT).
 207
 208    DNTT entries are variable sized objects, but are always a multiple
 209    of 3 words (we call each group of 3 words a "block").
 210
 211    The first bit in each block is an extension bit.  This bit is zero
 212    for the first block of a DNTT entry.  If the entry requires more
 213    than one block, then this bit is set to one in all blocks after
 214    the first one.  */
 215
 216 /* Each DNTT entry describes a particular debug symbol (beginning of
 217    a source file, a function, variables, structures, etc.
 218
 219    The type of the DNTT entry is stored in the "kind" field within the
 220    DNTT entry itself.  */
 221
 222 enum dntt_entry_type
 223 {
 224   DNTT_TYPE_NIL = -1,
 225   DNTT_TYPE_SRCFILE,
 226   DNTT_TYPE_MODULE,
 227   DNTT_TYPE_FUNCTION,
 228   DNTT_TYPE_ENTRY,
 229   DNTT_TYPE_BEGIN,
 230   DNTT_TYPE_END,
 231   DNTT_TYPE_IMPORT,
 232   DNTT_TYPE_LABEL,
 233   DNTT_TYPE_FPARAM,
 234   DNTT_TYPE_SVAR,
 235   DNTT_TYPE_DVAR,
 236   DNTT_TYPE_HOLE1,
 237   DNTT_TYPE_CONST,
 238   DNTT_TYPE_TYPEDEF,
 239   DNTT_TYPE_TAGDEF,
 240   DNTT_TYPE_POINTER,
 241   DNTT_TYPE_ENUM,
 242   DNTT_TYPE_MEMENUM,
 243   DNTT_TYPE_SET,
 244   DNTT_TYPE_SUBRANGE,
 245   DNTT_TYPE_ARRAY,
 246   DNTT_TYPE_STRUCT,
 247   DNTT_TYPE_UNION,
 248   DNTT_TYPE_FIELD,
 249   DNTT_TYPE_VARIANT,
 250   DNTT_TYPE_FILE,
 251   DNTT_TYPE_FUNCTYPE,
 252   DNTT_TYPE_WITH,
 253   DNTT_TYPE_COMMON,
 254   DNTT_TYPE_COBSTRUCT,
 255   DNTT_TYPE_XREF,
 256   DNTT_TYPE_SA,
 257   DNTT_TYPE_MACRO,
 258   DNTT_TYPE_BLOCKDATA,
 259   DNTT_TYPE_CLASS_SCOPE,
 260   DNTT_TYPE_REFERENCE,
 261   DNTT_TYPE_PTRMEM,
 262   DNTT_TYPE_PTRMEMFUNC,
 263   DNTT_TYPE_CLASS,
 264   DNTT_TYPE_GENFIELD,
 265   DNTT_TYPE_VFUNC,
 266   DNTT_TYPE_MEMACCESS,
 267   DNTT_TYPE_INHERITANCE,
 268   DNTT_TYPE_FRIEND_CLASS,
 269   DNTT_TYPE_FRIEND_FUNC,
 270   DNTT_TYPE_MODIFIER,
 271   DNTT_TYPE_OBJECT_ID,
 272   DNTT_TYPE_MEMFUNC,
 273   DNTT_TYPE_TEMPLATE,
 274   DNTT_TYPE_TEMPLATE_ARG,
 275   DNTT_TYPE_FUNC_TEMPLATE,
 276   DNTT_TYPE_LINK,
 277   DNTT_TYPE_DYN_ARRAY_DESC,
 278   DNTT_TYPE_DESC_SUBRANGE,
 279   DNTT_TYPE_BEGIN_EXT,
 280   DNTT_TYPE_INLN,
 281   DNTT_TYPE_INLN_LIST,
 282   DNTT_TYPE_ALIAS,
 283   DNTT_TYPE_DOC_FUNCTION,
 284   DNTT_TYPE_DOC_MEMFUNC,
 285   DNTT_TYPE_MAX
 286 };
 287
 288 /* DNTT_TYPE_SRCFILE:
 289
 290    One DNTT_TYPE_SRCFILE symbol is output for the start of each source
 291    file and at the begin and end of an included file.  A DNTT_TYPE_SRCFILE
 292    entry is also output before each DNTT_TYPE_FUNC symbol so that debuggers
 293    can determine what file a function was defined in.
 294
 295    LANGUAGE describes the source file's language.
 296
 297    NAME points to an VT entry providing the source file's name.
 298
 299    Note the name used for DNTT_TYPE_SRCFILE entries are exactly as seen
 300    by the compiler (ie they may be relative or absolute).  C include files
 301    via <> inclusion must use absolute paths.
 302
 303    ADDRESS points to an SLT entry from which line number and code locations
 304    may be determined.  */
 305
 306 struct dntt_type_srcfile
 307 {
 308   unsigned int extension:       1;
 309   unsigned int kind:            10;    /* DNTT_TYPE_SRCFILE */
 310   unsigned int language:        4;
 311   unsigned int unused:          17;
 312   vtpointer name;
 313   sltpointer address;
 314 };
 315
 316 /* DNTT_TYPE_MODULE:
 317
 318    A DNTT_TYPE_MODULE symbol is emitted for the start of a pascal
 319    module or C source file. A module indicates a compilation unit
 320    for name-scoping purposes; in that regard there should be
 321    a 1-1 correspondence between GDB "symtab"'s and MODULE symbol records.
 322
 323    Each DNTT_TYPE_MODULE must have an associated DNTT_TYPE_END symbol.
 324
 325    NAME points to a VT entry providing the module's name.  Note C
 326    source files are considered nameless modules.
 327
 328    ALIAS point to a VT entry providing a secondary name.
 329
 330    ADDRESS points to an SLT entry from which line number and code locations
 331    may be determined.  */
 332
 333 struct dntt_type_module
 334 {
 335   unsigned int extension:       1;
 336   unsigned int kind:            10;     /* DNTT_TYPE_MODULE */
 337   unsigned int unused:          21;
 338   vtpointer name;
 339   vtpointer alias;
 340   dnttpointer unused2;
 341   sltpointer address;
 342 };
 343
 344 /* DNTT_TYPE_FUNCTION,
 345    DNTT_TYPE_ENTRY,
 346    DNTT_TYPE_BLOCKDATA,
 347    DNTT_TYPE_MEMFUNC:
 348
 349    A DNTT_TYPE_FUNCTION symbol is emitted for each function definition;
 350    a DNTT_TYPE_ENTRY symbols is used for secondary entry points.  Both
 351    symbols used the dntt_type_function structure.
 352    A DNTT_TYPE_BLOCKDATA symbol is emitted ...?
 353    A DNTT_TYPE_MEMFUNC symbol is emitted for inlined member functions (C++).
 354
 355    Each of DNTT_TYPE_FUNCTION must have a matching DNTT_TYPE_END.
 356
 357    GLOBAL is nonzero if the function has global scope.
 358
 359    LANGUAGE describes the function's source language.
 360
 361    OPT_LEVEL describes the optimization level the function was compiled
 362    with.
 363
 364    VARARGS is nonzero if the function uses varargs.
 365
 366    NAME points to a VT entry providing the function's name.
 367
 368    ALIAS points to a VT entry providing a secondary name for the function.
 369
 370    FIRSTPARAM points to a LNTT entry which describes the parameter list.
 371
 372    ADDRESS points to an SLT entry from which line number and code locations
 373    may be determined.
 374
 375    ENTRYADDR is the memory address corresponding the function's entry point
 376
 377    RETVAL points to a LNTT entry describing the function's return value.
 378
 379    LOWADDR is the lowest memory address associated with this function.
 380
 381    HIADDR is the highest memory address associated with this function.  */
 382
 383 struct dntt_type_function
 384 {
 385   unsigned int extension:       1;
 386   unsigned int kind:            10;     /* DNTT_TYPE_FUNCTION,
 387                                            DNTT_TYPE_ENTRY,
 388                                            DNTT_TYPE_BLOCKDATA
 389                                            or DNTT_TYPE_MEMFUNC */
 390   unsigned int global:          1;
 391   unsigned int language:        4;
 392   unsigned int nest_level:      5;
 393   unsigned int opt_level:       2;
 394   unsigned int varargs:         1;
 395   unsigned int lang_info:       4;
 396   unsigned int inlined:         1;
 397   unsigned int localalloc:      1;
 398   unsigned int expansion:       1;
 399   unsigned int unused:          1;
 400   vtpointer name;
 401   vtpointer alias;
 402   dnttpointer firstparam;
 403   sltpointer address;
 404   CORE_ADDR entryaddr;
 405   dnttpointer retval;
 406   CORE_ADDR lowaddr;
 407   CORE_ADDR hiaddr;
 408 };
 409
 410 /* DNTT_TYPE_BEGIN:
 411
 412    A DNTT_TYPE_BEGIN symbol is emitted to begin a new nested scope.
 413    Every DNTT_TYPE_BEGIN symbol must have a matching DNTT_TYPE_END symbol.
 414
 415    CLASSFLAG is nonzero if this is the beginning of a c++ class definition.
 416
 417    ADDRESS points to an SLT entry from which line number and code locations
 418    may be determined.  */
 419
 420 struct dntt_type_begin
 421 {
 422   unsigned int extension:       1;
 423   unsigned int kind:            10;
 424   unsigned int classflag:       1;
 425   unsigned int unused:          20;
 426   sltpointer address;
 427 };
 428
 429 /* DNTT_TYPE_END:
 430
 431    A DNTT_TYPE_END symbol is emitted when closing a scope started by
 432    a DNTT_TYPE_MODULE, DNTT_TYPE_FUNCTION, DNTT_TYPE_WITH,
 433    DNTT_TYPE_COMMON, DNTT_TYPE_BEGIN, and DNTT_TYPE_CLASS_SCOPE symbols.
 434
 435    ENDKIND describes what type of scope the DNTT_TYPE_END is closing
 436    (one of the above 6 kinds).
 437
 438    CLASSFLAG is nonzero if this is the end of a c++ class definition.
 439
 440    ADDRESS points to an SLT entry from which line number and code locations
 441    may be determined.
 442
 443    BEGINSCOPE points to the LNTT entry which opened the scope.  */
 444
 445 struct dntt_type_end
 446 {
 447   unsigned int extension:       1;
 448   unsigned int kind:            10;
 449   unsigned int endkind:         10;
 450   unsigned int classflag:       1;
 451   unsigned int unused:          10;
 452   sltpointer address;
 453   dnttpointer beginscope;
 454 };
 455
 456 /* DNTT_TYPE_IMPORT is unused by GDB.  */
 457 /* DNTT_TYPE_LABEL is unused by GDB.  */
 458
 459 /* DNTT_TYPE_FPARAM:
 460
 461    A DNTT_TYPE_FPARAM symbol is emitted for a function argument.  When
 462    chained together the symbols represent an argument list for a function.
 463
 464    REGPARAM is nonzero if this parameter was passed in a register.
 465
 466    INDIRECT is nonzero if this parameter is a pointer to the parameter
 467    (pass by reference or pass by value for large items).
 468
 469    LONGADDR is nonzero if the parameter is a 64bit pointer.
 470
 471    NAME is a pointer into the VT for the parameter's name.
 472
 473    LOCATION describes where the parameter is stored.  Depending on the
 474    parameter type LOCATION could be a register number, or an offset
 475    from the stack pointer.
 476
 477    TYPE points to a NTT entry describing the type of this parameter.
 478
 479    NEXTPARAM points to the LNTT entry describing the next parameter.  */
 480
 481 struct dntt_type_fparam
 482 {
 483   unsigned int extension:       1;
 484   unsigned int kind:            10;
 485   unsigned int regparam:        1;
 486   unsigned int indirect:        1;
 487   unsigned int longaddr:        1;
 488   unsigned int copyparam:       1;
 489   unsigned int dflt:            1;
 490   unsigned int doc_ranges:      1;
 491   unsigned int misc_kind:       1;
 492   unsigned int unused:          14;
 493   vtpointer name;
 494   CORE_ADDR location;
 495   dnttpointer type;
 496   dnttpointer nextparam;
 497   int misc;
 498 };
 499
 500 /* DNTT_TYPE_SVAR:
 501
 502    A DNTT_TYPE_SVAR is emitted to describe a variable in static storage.
 503
 504    GLOBAL is nonzero if the variable has global scope.
 505
 506    INDIRECT is nonzero if the variable is a pointer to an object.
 507
 508    LONGADDR is nonzero if the variable is in long pointer space.
 509
 510    STATICMEM is nonzero if the variable is a member of a class.
 511
 512    A_UNION is nonzero if the variable is an anonymous union member.
 513
 514    NAME is a pointer into the VT for the variable's name.
 515
 516    LOCATION provides the memory address for the variable.
 517
 518    TYPE is a pointer into either the GNTT or LNTT which describes
 519    the type of this variable.  */
 520
 521 struct dntt_type_svar
 522 {
 523   unsigned int extension:       1;
 524   unsigned int kind:            10;
 525   unsigned int global:          1;
 526   unsigned int indirect:        1;
 527   unsigned int longaddr:        1;
 528   unsigned int staticmem:       1;
 529   unsigned int a_union:         1;
 530   unsigned int unused1:         1;
 531   unsigned int thread_specific: 1;
 532   unsigned int unused2:         14;
 533   vtpointer name;
 534   CORE_ADDR location;
 535   dnttpointer type;
 536   unsigned int offset;
 537   unsigned int displacement;
 538 };
 539
 540 /* DNTT_TYPE_DVAR:
 541
 542    A DNTT_TYPE_DVAR is emitted to describe automatic variables and variables
 543    held in registers.
 544
 545    GLOBAL is nonzero if the variable has global scope.
 546
 547    INDIRECT is nonzero if the variable is a pointer to an object.
 548
 549    REGVAR is nonzero if the variable is in a register.
 550
 551    A_UNION is nonzero if the variable is an anonymous union member.
 552
 553    NAME is a pointer into the VT for the variable's name.
 554
 555    LOCATION provides the memory address or register number for the variable.
 556
 557    TYPE is a pointer into either the GNTT or LNTT which describes
 558    the type of this variable.  */
 559
 560 struct dntt_type_dvar
 561 {
 562   unsigned int extension:       1;
 563   unsigned int kind:            10;
 564   unsigned int global:          1;
 565   unsigned int indirect:        1;
 566   unsigned int regvar:          1;
 567   unsigned int a_union:         1;
 568   unsigned int unused:          17;
 569   vtpointer name;
 570   int location;
 571   dnttpointer type;
 572   unsigned int offset;
 573 };
 574
 575 /* DNTT_TYPE_CONST:
 576
 577    A DNTT_TYPE_CONST symbol is emitted for program constants.
 578
 579    GLOBAL is nonzero if the constant has global scope.
 580
 581    INDIRECT is nonzero if the constant is a pointer to an object.
 582
 583    LOCATION_TYPE describes where to find the constant's value
 584    (in the VT, memory, or embedded in an instruction).
 585
 586    CLASSMEM is nonzero if the constant is a member of a class.
 587
 588    NAME is a pointer into the VT for the constant's name.
 589
 590    LOCATION provides the memory address, register number or pointer
 591    into the VT for the constant's value.
 592
 593    TYPE is a pointer into either the GNTT or LNTT which describes
 594    the type of this variable.  */
 595
 596 struct dntt_type_const
 597 {
 598   unsigned int extension:       1;
 599   unsigned int kind:            10;
 600   unsigned int global:          1;
 601   unsigned int indirect:        1;
 602   unsigned int location_type:   3;
 603   unsigned int classmem:        1;
 604   unsigned int unused:          15;
 605   vtpointer name;
 606   CORE_ADDR location;
 607   dnttpointer type;
 608   unsigned int offset;
 609   unsigned int displacement;
 610 };
 611
 612 /* DNTT_TYPE_TYPEDEF and DNTT_TYPE_TAGDEF:
 613
 614    The same structure is used to describe typedefs and tagdefs.
 615
 616    DNTT_TYPE_TYPEDEFS are associated with C "typedefs".
 617
 618    DNTT_TYPE_TAGDEFs are associated with C "struct", "union", and "enum"
 619    tags, which may have the same name as a typedef in the same scope.
 620    Also they are associated with C++ "class" tags, which implicitly have
 621    the same name as the class type.
 622
 623    GLOBAL is nonzero if the typedef/tagdef has global scope.
 624
 625    TYPEINFO is used to determine if full type information is available
 626    for a tag.  (usually 1, but can be zero for opaque types in C).
 627
 628    NAME is a pointer into the VT for the constant's name.
 629
 630    TYPE points to the underlying type for the typedef/tagdef in the
 631    GNTT or LNTT.  */
 632
 633 struct dntt_type_type
 634 {
 635   unsigned int extension:       1;
 636   unsigned int kind:            10;    /* DNTT_TYPE_TYPEDEF or
 637                                           DNTT_TYPE_TAGDEF.  */
 638   unsigned int global:          1;
 639   unsigned int typeinfo:        1;
 640   unsigned int unused:          19;
 641   vtpointer name;
 642   dnttpointer type;                    /* Underlying type, which for TAGDEF's may be
 643                                           DNTT_TYPE_STRUCT, DNTT_TYPE_UNION,
 644                                           DNTT_TYPE_ENUM, or DNTT_TYPE_CLASS.
 645                                           For TYPEDEF's other underlying types
 646                                           are also possible.  */
 647 };
 648
 649 /* DNTT_TYPE_POINTER:
 650
 651    Used to describe a pointer to an underlying type.
 652
 653    POINTSTO is a pointer into the GNTT or LNTT for the type which this
 654    pointer points to.
 655
 656    BITLENGTH is the length of the pointer (not the underlying type). */
 657
 658 struct dntt_type_pointer
 659 {
 660   unsigned int extension:       1;
 661   unsigned int kind:            10;
 662   unsigned int unused:          21;
 663   dnttpointer pointsto;
 664   unsigned int bitlength;
 665 };
 666
 667
 668 /* DNTT_TYPE_ENUM:
 669
 670    Used to describe enumerated types.
 671
 672    FIRSTMEM is a pointer to a DNTT_TYPE_MEMENUM in the GNTT/LNTT which
 673    describes the first member (and contains a pointer to the chain of
 674    members).
 675
 676    BITLENGTH is the number of bits used to hold the values of the enum's
 677    members.  */
 678
 679 struct dntt_type_enum
 680 {
 681   unsigned int extension:       1;
 682   unsigned int kind:    10;
 683   unsigned int unused:          21;
 684   dnttpointer firstmem;
 685   unsigned int bitlength;
 686 };
 687
 688 /* DNTT_TYPE_MEMENUM
 689
 690    Used to describe members of an enumerated type.
 691
 692    CLASSMEM is nonzero if this member is part of a class.
 693
 694    NAME points into the VT for the name of this member.
 695
 696    VALUE is the value of this enumeration member.
 697
 698    NEXTMEM points to the next DNTT_TYPE_MEMENUM in the chain.  */
 699
 700 struct dntt_type_memenum
 701 {
 702   unsigned int extension:       1;
 703   unsigned int kind:    10;
 704   unsigned int classmem:        1;
 705   unsigned int unused:          20;
 706   vtpointer name;
 707   unsigned int value;
 708   dnttpointer nextmem;
 709 };
 710
 711 /* DNTT_TYPE_SET
 712
 713    Used to describe PASCAL "set" type.
 714
 715    DECLARATION describes the bitpacking of the set.
 716
 717    SUBTYPE points to a DNTT entry describing the type of the members.
 718
 719    BITLENGTH is the size of the set.  */
 720
 721 struct dntt_type_set
 722 {
 723   unsigned int extension:       1;
 724   unsigned int kind:    10;
 725   unsigned int declaration:     2;
 726   unsigned int unused:          19;
 727   dnttpointer subtype;
 728   unsigned int bitlength;
 729 };
 730
 731 /* DNTT_TYPE_SUBRANGE
 732
 733    Used to describe subrange type.
 734
 735    DYN_LOW describes the lower bound of the subrange:
 736
 737      00 for a constant lower bound (found in LOWBOUND).
 738
 739      01 for a dynamic lower bound with the lower bound found in the
 740      memory address pointed to by LOWBOUND.
 741
 742      10 for a dynamic lower bound described by an variable found in the
 743      DNTT/LNTT (LOWBOUND would be a pointer into the DNTT/LNTT).
 744
 745    DYN_HIGH is similar to DYN_LOW, except it describes the upper bound.
 746
 747    SUBTYPE points to the type of the subrange.
 748
 749    BITLENGTH is the length in bits needed to describe the subrange's
 750    values.  */
 751
 752 struct dntt_type_subrange
 753 {
 754   unsigned int extension:       1;
 755   unsigned int kind:    10;
 756   unsigned int dyn_low:         2;
 757   unsigned int dyn_high:        2;
 758   unsigned int unused:          17;
 759   int lowbound;
 760   int highbound;
 761   dnttpointer subtype;
 762   unsigned int bitlength;
 763 };
 764
 765 /* DNTT_TYPE_ARRAY
 766
 767    Used to describe an array type.
 768
 769    DECLARATION describes the bit packing used in the array.
 770
 771    ARRAYISBYTES is nonzero if the field in arraylength describes the
 772    length in bytes rather than in bits.  A value of zero is used to
 773    describe an array with size 2**32.
 774
 775    ELEMISBYTES is nonzero if the length if each element in the array
 776    is describes in bytes rather than bits.  A value of zero is used
 777    to an element with size 2**32.
 778
 779    ELEMORDER is nonzero if the elements are indexed in increasing order.
 780
 781    JUSTIFIED if the elements are left justified to index zero.
 782
 783    ARRAYLENGTH is the length of the array.
 784
 785    INDEXTYPE is a DNTT pointer to the type used to index the array.
 786
 787    ELEMTYPE is a DNTT pointer to the type for the array elements.
 788
 789    ELEMLENGTH is the length of each element in the array (including
 790    any padding).
 791
 792    Multi-dimensional arrays are represented by ELEMTYPE pointing to
 793    another DNTT_TYPE_ARRAY.  */
 794
 795 struct dntt_type_array
 796 {
 797   unsigned int extension:       1;
 798   unsigned int kind:    10;
 799   unsigned int declaration:     2;
 800   unsigned int dyn_low:         2;
 801   unsigned int dyn_high:        2;
 802   unsigned int arrayisbytes:    1;
 803   unsigned int elemisbytes:     1;
 804   unsigned int elemorder:       1;
 805   unsigned int justified:       1;
 806   unsigned int unused:          11;
 807   unsigned int arraylength;
 808   dnttpointer indextype;
 809   dnttpointer elemtype;
 810   unsigned int elemlength;
 811 };
 812
 813 /* DNTT_TYPE_STRUCT
 814
 815    DNTT_TYPE_STRUCT is used to describe a C structure.
 816
 817    DECLARATION describes the bitpacking used.
 818
 819    FIRSTFIELD is a DNTT pointer to the first field of the structure
 820    (each field contains a pointer to the next field, walk the list
 821    to access all fields of the structure).
 822
 823    VARTAGFIELD and VARLIST are used for Pascal variant records.
 824
 825    BITLENGTH is the size of the structure in bits.  */
 826
 827 struct dntt_type_struct
 828 {
 829   unsigned int extension:       1;
 830   unsigned int kind:    10;
 831   unsigned int declaration:     2;
 832   unsigned int unused:          19;
 833   dnttpointer firstfield;
 834   dnttpointer vartagfield;
 835   dnttpointer varlist;
 836   unsigned int bitlength;
 837 };
 838
 839 /* DNTT_TYPE_UNION
 840
 841    DNTT_TYPE_UNION is used to describe a C union.
 842
 843    FIRSTFIELD is a DNTT pointer to the beginning of the field chain.
 844
 845    BITLENGTH is the size of the union in bits.  */
 846
 847 struct dntt_type_union
 848 {
 849   unsigned int extension:       1;
 850   unsigned int kind:    10;
 851   unsigned int unused:          21;
 852   dnttpointer firstfield;
 853   unsigned int bitlength;
 854 };
 855
 856 /* DNTT_TYPE_FIELD
 857
 858    DNTT_TYPE_FIELD describes one field in a structure or union
 859    or C++ class.
 860
 861    VISIBILITY is used to describe the visibility of the field
 862    (for c++.  public = 0, protected = 1, private = 2).
 863
 864    A_UNION is nonzero if this field is a member of an anonymous union.
 865
 866    STATICMEM is nonzero if this field is a static member of a template.
 867
 868    NAME is a pointer into the VT for the name of the field.
 869
 870    BITOFFSET gives the offset of this field in bits from the beginning
 871    of the structure or union this field is a member of.
 872
 873    TYPE is a DNTT pointer to the type describing this field.
 874
 875    BITLENGTH is the size of the entry in bits.
 876
 877    NEXTFIELD is a DNTT pointer to the next field in the chain.  */
 878
 879 struct dntt_type_field
 880 {
 881   unsigned int extension:       1;
 882   unsigned int kind:    10;
 883   unsigned int visibility:      2;
 884   unsigned int a_union:         1;
 885   unsigned int staticmem:       1;
 886   unsigned int unused:          17;
 887   vtpointer name;
 888   unsigned int bitoffset;
 889   dnttpointer type;
 890   unsigned int bitlength;
 891   dnttpointer nextfield;
 892 };
 893
 894 /* DNTT_TYPE_VARIANT is unused by GDB.  */
 895 /* DNTT_TYPE_FILE is unused by GDB.  */
 896
 897 /* DNTT_TYPE_FUNCTYPE
 898
 899    I think this is used to describe a function type (e.g., would
 900    be emitted as part of a function-pointer description).
 901
 902    VARARGS is nonzero if this function uses varargs.
 903
 904    FIRSTPARAM is a DNTT pointer to the first entry in the parameter
 905    chain.
 906
 907    RETVAL is a DNTT pointer to the type of the return value.  */
 908
 909 struct dntt_type_functype
 910 {
 911   unsigned int extension:       1;
 912   unsigned int kind:            10;
 913   unsigned int varargs:         1;
 914   unsigned int info:            4;
 915   unsigned int unused:          16;
 916   unsigned int bitlength;
 917   dnttpointer firstparam;
 918   dnttpointer retval;
 919 };
 920
 921 /* DNTT_TYPE_WITH is emitted by C++ to indicate "with" scoping semantics.
 922    (Probably also emitted by PASCAL to support "with"...).
 923
 924    C++ example: Say "memfunc" is a method of class "c", and say
 925    "m" is a data member of class "c". Then from within "memfunc",
 926    it is legal to reference "m" directly (e.g. you don't have to
 927    say "this->m". The symbol table indicates
 928    this by emitting a DNTT_TYPE_WITH symbol within the function "memfunc",
 929    pointing to the type symbol for class "c".
 930
 931    In GDB, this symbol record is unnecessary,
 932    because GDB's symbol lookup algorithm
 933    infers the "with" semantics when it sees a "this" argument to the member
 934    function. So GDB can safely ignore the DNTT_TYPE_WITH record.
 935
 936    A DNTT_TYPE_WITH has a matching DNTT_TYPE_END symbol.  */
 937
 938 struct dntt_type_with
 939 {
 940   unsigned int extension:       1;    /* always zero */
 941   unsigned int kind:            10;   /* always DNTT_TYPE_WITH */
 942   unsigned int addrtype:        2;    /* 0 => STATTYPE                */
 943                                       /* 1 => DYNTYPE                 */
 944                                       /* 2 => REGTYPE                 */
 945   unsigned int indirect:        1;    /* 1 => pointer to object       */
 946   unsigned int longaddr:        1;    /* 1 => in long pointer space   */
 947   unsigned int nestlevel:       6;    /* # of nesting levels back     */
 948   unsigned int doc_ranges:      1;    /* 1 => location is range list  */
 949   unsigned int unused:          10;
 950   long location;                      /* where stored (allocated)     */
 951   sltpointer address;
 952   dnttpointer type;                   /* type of with expression      */
 953   vtpointer name;                     /* name of with expression      */
 954   unsigned long  offset;              /* byte offset from location    */
 955 };
 956
 957 /* DNTT_TYPE_COMMON is unsupported by GDB.  */
 958 /* A DNTT_TYPE_COMMON symbol must have a matching DNTT_TYPE_END symbol */
 959
 960 /* DNTT_TYPE_COBSTRUCT is unsupported by GDB.  */
 961 /* DNTT_TYPE_XREF is unsupported by GDB.  */
 962 /* DNTT_TYPE_SA is unsupported by GDB.  */
 963 /* DNTT_TYPE_MACRO is unsupported by GDB */
 964
 965 /* DNTT_TYPE_BLOCKDATA has the same structure as DNTT_TYPE_FUNCTION */
 966
 967 /* The following are the C++ specific SOM records */
 968
 969 /*  The purpose of the DNTT_TYPE_CLASS_SCOPE is to bracket C++ methods
 970     and indicate the method name belongs in the "class scope" rather
 971     than in the module they are being defined in. For example:
 972
 973     class c {
 974     ...
 975     void memfunc(); // member function
 976     };
 977
 978     void c::memfunc()   // definition of class c's "memfunc"
 979     {
 980     ...
 981     }
 982
 983     main()
 984     {
 985     ...
 986     }
 987
 988     In the above, the name "memfunc" is not directly visible from "main".
 989     I.e., you have to say "break c::memfunc".
 990     If it were a normal function (not a method), it would be visible
 991     via the simple "break memfunc". Since "memfunc" otherwise looks
 992     like a normal FUNCTION in the symbol table, the bracketing
 993     CLASS_SCOPE is what is used to indicate it is really a method.
 994
 995
 996    A DNTT_TYPE_CLASS_SCOPE symbol must have a matching DNTT_TYPE_END symbol.  */
 997
 998 struct dntt_type_class_scope
 999 {
1000   unsigned int extension:   1;     /* Always zero.  */
1001   unsigned int kind:       10;     /* Always DNTT_TYPE_CLASS_SCOPE.  */
1002   unsigned int unused:     21;
1003   sltpointer address         ;     /* Pointer to SLT entry.  */
1004   dnttpointer type           ;     /* Pointer to class type DNTT.  */
1005 };
1006
1007 /* C++ reference parameter.
1008    The structure of this record is the same as DNTT_TYPE_POINTER -
1009    refer to struct dntt_type_pointer.  */
1010
1011 /* The next two describe C++ pointer-to-data-member type, and
1012    pointer-to-member-function type, respectively.
1013    DNTT_TYPE_PTRMEM and DNTT_TYPE_PTRMEMFUNC have the same structure.  */
1014
1015 struct dntt_type_ptrmem
1016 {
1017   unsigned int extension:   1;     /* Always zero.  */
1018   unsigned int kind:       10;     /* Always DNTT_TYPE_PTRMEM.  */
1019   unsigned int unused:     21;
1020   dnttpointer pointsto       ;     /* Pointer to class DNTT.  */
1021   dnttpointer memtype        ;     /* Type of member.  */
1022 };
1023
1024 struct dntt_type_ptrmemfunc
1025 {
1026   unsigned int extension:   1;     /* Always zero.  */
1027   unsigned int kind:       10;     /* Always DNTT_TYPE_PTRMEMFUNC.  */
1028   unsigned int unused:     21;
1029   dnttpointer pointsto       ;     /* Pointer to class DNTT.  */
1030   dnttpointer memtype        ;     /* Type of member.  */
1031 };
1032
1033 /* The DNTT_TYPE_CLASS symbol is emitted to describe a class type.
1034    "memberlist" points to a chained list of FIELD or GENFIELD records
1035    indicating the class members. "parentlist" points to a chained list
1036    of INHERITANCE records indicating classes from which we inherit
1037    fields.  */
1038
1039 struct dntt_type_class
1040 {
1041   unsigned int extension:   1;     /* Always zero.  */
1042   unsigned int kind:       10;     /* Always DNTT_TYPE_CLASS.  */
1043   unsigned int abstract:    1;     /* Is this an abstract class?  */
1044   unsigned int class_decl:  2;     /* 0=class,1=union,2=struct.  */
1045   unsigned int expansion:   1;     /* 1=template expansion.  */
1046   unsigned int unused:     17;
1047   dnttpointer memberlist     ;     /* Ptr to chain of [GEN]FIELDs.  */
1048   unsigned long vtbl_loc     ;     /* Offset in obj of ptr to vtbl.  */
1049   dnttpointer parentlist     ;     /* Ptr to K_INHERITANCE list.  */
1050   unsigned long bitlength    ;     /* Total at this level.  */
1051   dnttpointer identlist      ;     /* Ptr to chain of class ident's.  */
1052   dnttpointer friendlist     ;     /* Ptr to K_FRIEND list.  */
1053   dnttpointer templateptr    ;     /* Ptr to template.  */
1054   dnttpointer nextexp        ;     /* Ptr to next expansion.  */
1055 };
1056
1057 /* Class members are indicated via either the FIELD record (for
1058    data members, same as for C struct fields), or by the GENFIELD record
1059    (for member functions).  */
1060
1061 struct dntt_type_genfield
1062 {
1063   unsigned int extension:   1;     /* Always zero.  */
1064   unsigned int kind:       10;     /* Always DNTT_TYPE_GENFIELD.  */
1065   unsigned int visibility:  2;     /* Pub = 0, prot = 1, priv = 2.  */
1066   unsigned int a_union:     1;     /* 1 => anonymous union member.  */
1067   unsigned int unused:     18;
1068   dnttpointer field          ;     /* Pointer to field or qualifier.  */
1069   dnttpointer nextfield      ;     /* Pointer to next field.  */
1070 };
1071
1072 /* C++ virtual functions.  */
1073
1074 struct dntt_type_vfunc
1075 {
1076   unsigned int extension:   1;     /* always zero */
1077   unsigned int kind:       10;     /* always DNTT_TYPE_VFUNC */
1078   unsigned int pure:        1;     /* pure virtual function ?       */
1079   unsigned int unused:     20;
1080   dnttpointer funcptr        ;     /* points to FUNCTION symbol     */
1081   unsigned long vtbl_offset  ;     /* offset into vtbl for virtual  */
1082 };
1083
1084 /* Not precisely sure what this is intended for - DDE ignores it.  */
1085
1086 struct dntt_type_memaccess
1087 {
1088   unsigned int extension:   1;     /* always zero */
1089   unsigned int kind:       10;     /* always DNTT_TYPE_MEMACCESS */
1090   unsigned int unused:     21;
1091   dnttpointer classptr       ;     /* pointer to base class         */
1092   dnttpointer field          ;     /* pointer field                 */
1093 };
1094
1095 /* The DNTT_TYPE_INHERITANCE record describes derived classes.
1096    In particular, the "parentlist" field of the CLASS record points
1097    to a list of INHERITANCE records for classes from which we
1098    inherit members.  */
1099
1100 struct dntt_type_inheritance
1101 {
1102   unsigned int extension:   1;     /* always zero */
1103   unsigned int kind:       10;     /* always DNTT_TYPE_INHERITANCE */
1104   unsigned int Virtual:     1;     /* virtual base class ?          */
1105   unsigned int visibility:  2;     /* pub = 0, prot = 1, priv = 2   */
1106   unsigned int unused:     18;
1107   dnttpointer classname      ;     /* first parent class, if any    */
1108   unsigned long offset       ;     /* offset to start of base class */
1109   dnttpointer next           ;     /* pointer to next K_INHERITANCE */
1110   unsigned long future[2]    ;     /* padding to 3-word block end   */
1111 };
1112
1113 /* C++ "friend" classes ... */
1114
1115 struct dntt_type_friend_class
1116 {
1117   unsigned int extension:   1;     /* always zero */
1118   unsigned int kind:       10;     /* always DNTT_TYPE_FRIEND_CLASS */
1119   unsigned int unused:     21;
1120   dnttpointer classptr       ;     /* pointer to class DNTT         */
1121   dnttpointer next           ;     /* next DNTT_FRIEND              */
1122 };
1123
1124 struct dntt_type_friend_func
1125 {
1126   unsigned int extension:   1;     /* always zero */
1127   unsigned int kind:       10;     /* always DNTT_TYPE_FRIEND_FUNC */
1128   unsigned int unused:     21;
1129   dnttpointer funcptr        ;     /* pointer to function           */
1130   dnttpointer classptr       ;     /* pointer to class DNTT         */
1131   dnttpointer next           ;     /* next DNTT_FRIEND              */
1132   unsigned long future[2]    ;     /* padding to 3-word block end   */
1133 };
1134
1135 /* DDE appears to ignore the DNTT_TYPE_MODIFIER record.
1136    It could perhaps be used to give better "ptype" output in GDB;
1137    otherwise it is probably safe for GDB to ignore it also.  */
1138
1139 struct dntt_type_modifier
1140 {
1141   unsigned int extension:   1;     /* always zero */
1142   unsigned int kind:       10;     /* always DNTT_TYPE_MODIFIER */
1143   unsigned int m_const:     1;     /* const                         */
1144   unsigned int m_static:    1;     /* static                        */
1145   unsigned int m_void:      1;     /* void                          */
1146   unsigned int m_volatile:  1;     /* volatile                      */
1147   unsigned int m_duplicate: 1;     /* duplicate                     */
1148   unsigned int unused:     16;
1149   dnttpointer type           ;     /* subtype                       */
1150   unsigned long future       ;     /* padding to 3-word block end   */
1151 };
1152
1153 /* I'm not sure what this was intended for - DDE ignores it.  */
1154
1155 struct dntt_type_object_id
1156 {
1157   unsigned int extension:   1;     /* always zero */
1158   unsigned int kind:       10;     /* always DNTT_TYPE_OBJECT_ID */
1159   unsigned int indirect:    1;     /* Is object_ident addr of addr? */
1160   unsigned int unused:     20;
1161   unsigned long object_ident ;     /* object identifier             */
1162   unsigned long offset       ;     /* offset to start of base class */
1163   dnttpointer next           ;     /* pointer to next K_OBJECT_ID   */
1164   unsigned long segoffset    ;     /* for linker fixup              */
1165   unsigned long future       ;     /* padding to 3-word block end   */
1166 };
1167
1168 /* No separate dntt_type_memfunc; same as dntt_type_func */
1169
1170 /* Symbol records to support templates. These only get used
1171    in DDE's "describe" output (like GDB's "ptype").  */
1172
1173 /* The TEMPLATE record is the header for a template-class.
1174    Like the CLASS record, a TEMPLATE record has a memberlist that
1175    points to a list of template members. It also has an arglist
1176    pointing to a list of TEMPLATE_ARG records.  */
1177
1178 struct dntt_type_template
1179 {
1180   unsigned int extension:   1;     /* always zero */
1181   unsigned int kind:       10;     /* always DNTT_TYPE_TEMPLATE */
1182   unsigned int abstract:    1;     /* is this an abstract class?    */
1183   unsigned int class_decl:  2;     /* 0=class,1=union,2=struct      */
1184   unsigned int unused:     18;
1185   dnttpointer memberlist     ;     /* ptr to chain of K_[GEN]FIELDs */
1186   long unused2               ;     /* offset in obj of ptr to vtbl  */
1187   dnttpointer parentlist     ;     /* ptr to K_INHERITANCE list     */
1188   unsigned long bitlength    ;     /* total at this level           */
1189   dnttpointer identlist      ;     /* ptr to chain of class ident's */
1190   dnttpointer friendlist     ;     /* ptr to K_FRIEND list          */
1191   dnttpointer arglist        ;     /* ptr to argument list          */
1192   dnttpointer expansions     ;     /* ptr to expansion list         */
1193 };
1194
1195 /* Template-class arguments are a list of TEMPL_ARG records
1196    chained together. The "name" field is the name of the formal.
1197    E.g.:
1198
1199      template <class T> class q { ... };
1200
1201    Then "T" is the name of the formal argument.  */
1202
1203 struct dntt_type_templ_arg
1204 {
1205   unsigned int extension:   1;     /* always zero */
1206   unsigned int kind:       10;     /* always DNTT_TYPE_TEMPL_ARG */
1207   unsigned int usagetype:   1;     /* 0 type-name 1 expression     */
1208   unsigned int unused:     20;
1209   vtpointer name             ;     /* name of argument             */
1210   dnttpointer type           ;     /* for non type arguments       */
1211   dnttpointer nextarg        ;     /* Next argument if any         */
1212   long future[2]             ;     /* padding to 3-word block end  */
1213 };
1214
1215 /* FUNC_TEMPLATE records are sort of like FUNCTION, but are emitted
1216    for template member functions. E.g.,
1217
1218      template <class T> class q
1219      {
1220         ...
1221         void f();
1222         ...
1223      };
1224
1225    Within the list of FIELDs/GENFIELDs defining the member list
1226    of the template "q", "f" would appear as a FUNC_TEMPLATE.
1227    We'll also see instances of FUNCTION "f" records for each
1228    instantiation of the template.  */
1229
1230 struct dntt_type_func_template
1231 {
1232   unsigned int extension:   1;     /* always zero */
1233   unsigned int kind:       10;     /* always DNTT_TYPE_FUNC_TEMPLATE */
1234   unsigned int public:      1;     /* 1 => globally visible        */
1235   unsigned int language:    4;     /* type of language             */
1236   unsigned int level:       5;     /* nesting level (top level = 0)*/
1237   unsigned int optimize:    2;     /* level of optimization        */
1238   unsigned int varargs:     1;     /* ellipses.  Pascal/800 later  */
1239   unsigned int info:        4;     /* lang-specific stuff; F_xxxx  */
1240   unsigned int inlined:     1;
1241   unsigned int localloc:    1;     /* 0 at top, 1 at end of block  */
1242   unsigned int unused:      2;
1243   vtpointer name             ;     /* name of function             */
1244   vtpointer alias            ;     /* alternate name, if any       */
1245   dnttpointer firstparam     ;     /* first FPARAM, if any         */
1246   dnttpointer retval         ;     /* return type, if any          */
1247   dnttpointer arglist        ;     /* ptr to argument list         */
1248 };
1249
1250 /* LINK is apparently intended to link together function template
1251    definitions with their instantiations. However, it is not clear
1252    why this would be needed, except to provide the information on
1253    a "ptype" command. And as far as I can tell, aCC does not
1254    generate this record.  */
1255
1256 struct dntt_type_link
1257 {
1258   unsigned int extension:   1;     /* always zero */
1259   unsigned int kind:       10;     /* always DNTT_TYPE_LINK */
1260   unsigned int linkKind:    4;     /* always LINK_UNKNOWN          */
1261   unsigned int unused:     17;
1262   long future1               ;     /* expansion                    */
1263   dnttpointer ptr1           ;     /* link from template           */
1264   dnttpointer ptr2           ;     /* to expansion                 */
1265   long future[2]             ;     /* padding to 3-word block end  */
1266 };
1267
1268 /* end of C++ specific SOM's.  */
1269
1270 /* DNTT_TYPE_DYN_ARRAY_DESC is unused by GDB */
1271 /* DNTT_TYPE_DESC_SUBRANGE is unused by GDB */
1272 /* DNTT_TYPE_BEGIN_EXT is unused by GDB */
1273 /* DNTT_TYPE_INLN is unused by GDB */
1274 /* DNTT_TYPE_INLN_LIST is unused by GDB */
1275 /* DNTT_TYPE_ALIAS is unused by GDB */
1276
1277 struct dntt_type_doc_function
1278 {
1279   unsigned int extension: 1;   /* always zero                  */
1280   unsigned int kind:     10;   /* K_DOC_FUNCTION or            */
1281                                /* K_DOC_MEMFUNC                */
1282   unsigned int global:    1;   /* 1 => globally visible        */
1283   unsigned int language:  4;   /* type of language             */
1284   unsigned int level:     5;   /* nesting level (top level = 0)*/
1285   unsigned int optimize:  2;   /* level of optimization        */
1286   unsigned int varargs:   1;   /* ellipses.  Pascal/800 later  */
1287   unsigned int info:      4;   /* lang-specific stuff; F_xxxx  */
1288   unsigned int inlined:   1;
1289   unsigned int localloc:  1;   /* 0 at top, 1 at end of block  */
1290   unsigned int expansion: 1;   /* 1 = function expansion       */
1291   unsigned int doc_clone: 1;
1292   vtpointer name;              /* name of function             */
1293   vtpointer alias;             /* alternate name, if any       */
1294   dnttpointer firstparam;      /* first FPARAM, if any         */
1295   sltpointer address;          /* code and text locations      */
1296   CORE_ADDR entryaddr;         /* address of entry point       */
1297   dnttpointer retval;          /* return type, if any          */
1298   CORE_ADDR lowaddr;           /* lowest address of function   */
1299   CORE_ADDR hiaddr;            /* highest address of function  */
1300   dnttpointer inline_list;     /* pointer to first inline    */
1301   ltpointer lt_offset;         /* start of frag/cp line table  */
1302   ctxtpointer ctxt_offset;     /* start of context table for this routine */
1303 };
1304
1305 /* DNTT_TYPE_DOC_MEMFUNC is unused by GDB */
1306
1307 /* DNTT_TYPE_GENERIC and DNTT_TYPE_BLOCK are convience structures
1308    so we can examine a DNTT entry in a generic fashion.  */
1309 struct dntt_type_generic
1310 {
1311   unsigned int word[9];
1312 };
1313
1314 struct dntt_type_block
1315 {
1316   unsigned int extension:       1;
1317   unsigned int kind:            10;
1318   unsigned int unused:          21;
1319   unsigned int word[2];
1320 };
1321
1322 /* One entry in a DNTT (either the LNTT or GNTT).
1323    This is a union of the above 60 or so structure definitions.  */
1324
1325 union dnttentry
1326 {
1327   struct dntt_type_srcfile dsfile;
1328   struct dntt_type_module dmodule;
1329   struct dntt_type_function dfunc;
1330   struct dntt_type_function dentry;
1331   struct dntt_type_begin dbegin;
1332   struct dntt_type_end dend;
1333   struct dntt_type_fparam dfparam;
1334   struct dntt_type_svar dsvar;
1335   struct dntt_type_dvar ddvar;
1336   struct dntt_type_const dconst;
1337   struct dntt_type_type dtype;
1338   struct dntt_type_type dtag;
1339   struct dntt_type_pointer dptr;
1340   struct dntt_type_enum denum;
1341   struct dntt_type_memenum dmember;
1342   struct dntt_type_set dset;
1343   struct dntt_type_subrange dsubr;
1344   struct dntt_type_array darray;
1345   struct dntt_type_struct dstruct;
1346   struct dntt_type_union dunion;
1347   struct dntt_type_field dfield;
1348   struct dntt_type_functype dfunctype;
1349   struct dntt_type_with dwith;
1350   struct dntt_type_function dblockdata;
1351   struct dntt_type_class_scope dclass_scope;
1352   struct dntt_type_pointer dreference;
1353   struct dntt_type_ptrmem dptrmem;
1354   struct dntt_type_ptrmemfunc dptrmemfunc;
1355   struct dntt_type_class dclass;
1356   struct dntt_type_genfield dgenfield;
1357   struct dntt_type_vfunc dvfunc;
1358   struct dntt_type_memaccess dmemaccess;
1359   struct dntt_type_inheritance dinheritance;
1360   struct dntt_type_friend_class dfriend_class;
1361   struct dntt_type_friend_func dfriend_func;
1362   struct dntt_type_modifier dmodifier;
1363   struct dntt_type_object_id dobject_id;
1364   struct dntt_type_template dtemplate;
1365   struct dntt_type_templ_arg dtempl_arg;
1366   struct dntt_type_func_template dfunc_template;
1367   struct dntt_type_link dlink;
1368   struct dntt_type_doc_function ddocfunc;
1369   struct dntt_type_generic dgeneric;
1370   struct dntt_type_block dblock;
1371 };
1372
1373 /* Source line entry types.  */
1374 enum slttype
1375 {
1376   SLT_NORMAL,
1377   SLT_SRCFILE,
1378   SLT_MODULE,
1379   SLT_FUNCTION,
1380   SLT_ENTRY,
1381   SLT_BEGIN,
1382   SLT_END,
1383   SLT_WITH,
1384   SLT_EXIT,
1385   SLT_ASSIST,
1386   SLT_MARKER,
1387   SLT_CLASS_SCOPE,
1388   SLT_INLN,
1389   SLT_NORMAL_OFFSET,
1390 };
1391
1392 /* A normal source line entry.  Simply provides a mapping of a source
1393    line number to a code address.
1394
1395    SLTDESC will always be SLT_NORMAL or SLT_EXIT.  */
1396
1397 struct slt_normal
1398 {
1399   unsigned int sltdesc: 4;
1400   unsigned int line:    28;
1401   CORE_ADDR address;
1402 };
1403
1404 struct slt_normal_off
1405 {
1406   unsigned int sltdesc: 4;
1407   unsigned int offset:  6;
1408   unsigned int line:    22;
1409   CORE_ADDR address;
1410 };
1411
1412 /* A special source line entry.  Provides a mapping of a declaration
1413    to a line number.  These entries point back into the DNTT which
1414    references them.  */
1415
1416 struct slt_special
1417 {
1418   unsigned int sltdesc: 4;
1419   unsigned int line:    28;
1420   dnttpointer backptr;
1421 };
1422
1423 /* Used to describe nesting.
1424
1425    For nested languages, an slt_assist entry must follow each SLT_FUNC
1426    entry in the SLT.  The address field will point forward to the
1427    first slt_normal entry within the function's scope.  */
1428
1429 struct slt_assist
1430 {
1431   unsigned int sltdesc: 4;
1432   unsigned int unused:  28;
1433   sltpointer address;
1434 };
1435
1436 struct slt_generic
1437 {
1438   unsigned int word[2];
1439 };
1440
1441 union sltentry
1442 {
1443   struct slt_normal snorm;
1444   struct slt_normal_off snormoff;
1445   struct slt_special sspec;
1446   struct slt_assist sasst;
1447   struct slt_generic sgeneric;
1448 };
1449
1450 /* $LINES$ declarations
1451    This is the line table used for optimized code, which is only present
1452    in the new $PROGRAM_INFO$ debug space.  */
1453
1454 #define DST_LN_ESCAPE_FLAG1   15
1455 #define DST_LN_ESCAPE_FLAG2   14
1456 #define DST_LN_CTX_SPEC1      13
1457 #define DST_LN_CTX_SPEC2      12
1458
1459 /* Escape function codes:  */
1460
1461 typedef enum
1462 {
1463   dst_ln_pad,          /* pad byte */
1464   dst_ln_escape_1,     /* reserved */
1465   dst_ln_dpc1_dln1,    /* 1 byte line delta, 1 byte pc delta */
1466   dst_ln_dpc2_dln2,    /* 2 bytes line delta, 2 bytes pc delta */
1467   dst_ln_pc4_ln4,      /* 4 bytes ABSOLUTE line number, 4 bytes ABSOLUTE pc */
1468   dst_ln_dpc0_dln1,    /* 1 byte line delta, pc delta = 0 */
1469   dst_ln_ln_off_1,     /* statement escape, stmt # = 1 (2nd stmt on line) */
1470   dst_ln_ln_off,       /* statement escape, stmt # = next byte */
1471   dst_ln_entry,        /* entry escape, next byte is entry number */
1472   dst_ln_exit,         /* exit escape */
1473   dst_ln_stmt_end,     /* gap escape, 4 bytes pc delta */
1474   dst_ln_stmt_cp,      /* current stmt is a critical point */
1475   dst_ln_escape_12,    /* reserved */
1476   dst_ln_escape_13,    /* this is an exception site record */
1477   dst_ln_nxt_byte,     /* next byte contains the real escape code */
1478   dst_ln_end,          /* end escape, final entry follows */
1479   dst_ln_escape1_END_OF_ENUM
1480 }
1481 dst_ln_escape1_t;
1482
1483 typedef enum
1484 {
1485   dst_ln_ctx_1,         /* next byte describes context switch with 5-bit */
1486                         /* index into the image table and 3-bit run length. */
1487                         /* If run length is 0, end with another cxt specifier or ctx_end */
1488   dst_ln_ctx_2,         /* next 2 bytes switch context: 13 bit index, 3 bit run length */
1489   dst_ln_ctx_4,         /* next 4 bytes switch context: 29 bit index, 3 bit run length */
1490   dst_ln_ctx_end,       /* end current context */
1491   dst_ln_col_run_1,     /* next byte is column position of start of next statement, */
1492                         /* following byte is length of statement */
1493   dst_ln_col_run_2,     /* next 2 bytes is column position of start of next statement, */
1494                         /* following 2 bytes is length of statement */
1495   dst_ln_init_base1,    /* next 4 bytes are absolute PC, followed by 1 byte of line number */
1496   dst_ln_init_base2,    /* next 4 bytes are absolute PC, followed by 2 bytes of line number */
1497   dst_ln_init_base3,    /* next 4 bytes are absolute PC, followed by 3 bytes of line number */
1498   dst_ln_escape2_END_OF_ENUM
1499 }
1500 dst_ln_escape2_t;
1501
1502 typedef union
1503 {
1504   struct
1505   {
1506     unsigned int     pc_delta : 4;      /* 4 bit pc delta */
1507     int              ln_delta : 4;      /* 4 bit line number delta */
1508   }
1509   delta;
1510
1511   struct
1512   {
1513     unsigned int     esc_flag : 4;      /* alias for pc_delta  */
1514     unsigned int     esc_code : 4;      /* escape function code (dst_ln_escape1_t, or ...2_t */
1515   }
1516   esc;
1517
1518   struct
1519   {
1520     unsigned int     esc_flag   : 4;      /* dst_ln_ctx_spec1, or dst_ln_ctx_spec2 */
1521     unsigned int     run_length : 2;
1522     unsigned int     ctx_index  : 2;      /* ...spec2 contains index;  ...spec1, index - 4 */
1523   }
1524   ctx_spec;
1525
1526   char               sdata;               /* signed data byte */
1527   unsigned char      udata;               /* unsigned data byte */
1528 }
1529 dst_ln_entry_t,
1530   * dst_ln_entry_ptr_t;
1531
1532 /* Warning: although the above union occupies only 1 byte the compiler treats
1533    it as having size 2 (the minimum size of a struct).  Therefore a sequence of
1534    dst_ln_entry_t's cannot be described as an array, and walking through such a
1535    sequence requires convoluted code such as
1536         ln_ptr = (dst_ln_entry_ptr_t) (char*) ln_ptr + 1
1537    We regret the inconvenience.  */
1538
1539 /* Structure for interpreting the byte following a dst_ln_ctx1 entry.  */
1540 typedef struct
1541 {
1542     unsigned int          ctx1_index : 5;      /* 5 bit index into context table */
1543     unsigned int          ctx1_run_length : 3; /* 3 bit run length */
1544 } dst_ln_ctx1_t,
1545   *dst_ln_ctx1_ptr_t;
1546
1547 /* Structure for interpreting the bytes following a dst_ln_ctx2 entry.  */
1548 typedef struct
1549 {
1550     unsigned int          ctx2_index : 13;     /* 13 bit index into context table */
1551     unsigned int          ctx2_run_length : 3; /* 3 bit run length */
1552 } dst_ln_ctx2_t,
1553   *dst_ln_ctx2_ptr_t;
1554
1555 /* Structure for interpreting the bytes following a dst_ln_ctx4 entry.  */
1556 typedef struct
1557 {
1558     unsigned int          ctx4_index : 29;     /* 29 bit index into context table */
1559     unsigned int          ctx4_run_length : 3; /* 3 bit run length */
1560 } dst_ln_ctx4_t,
1561   *dst_ln_ctx4_ptr_t;
1562
1563
1564 /*  PXDB definitions.
1565
1566    PXDB is a post-processor which takes the executable file
1567    and massages the debug information so that the debugger may
1568    start up and run more efficiently.  Some of the tasks
1569    performed by PXDB are:
1570
1571    o   Remove duplicate global type and variable information
1572        from the GNTT,
1573
1574    o   Append the GNTT onto the end of the LNTT and place both
1575        back in the LNTT section,
1576
1577    o   Build quick look-up tables (description follows) for
1578        files, procedures, modules, and paragraphs (for Cobol),
1579        placing these in the GNTT section,
1580
1581    o   Reconstruct the header appearing in the header section
1582        to access this information.
1583
1584    The "quick look-up" tables are in the $GNTT$ sub-space, in
1585    the following order:
1586
1587        Procedures    -sorted by address
1588        Source files  -sorted by address (of the
1589                       generated code from routines)
1590        Modules       -sorted by address
1591        Classes       -<unsorted?>
1592        Address Alias -sorted by index <?>
1593        Object IDs    -sorted by object identifier
1594
1595    Most quick entries have (0-based) indices into the LNTT tables to
1596    the full entries for the item it describes.
1597
1598    The post-PXDB header is in the $HEADER$ sub-space.  Alas, it
1599    occurs in different forms, depending on the optimization level
1600    in the compilation step and whether PXDB was run or not. The
1601    worst part is the forms aren't self-describing, so we'll have
1602    to grovel in the bits to figure out what kind we're looking at
1603    (see hp_get_header in hp-psymtab-read.c).  */
1604
1605 /* PXDB versions.  */
1606
1607 #define PXDB_VERSION_CPLUSPLUS  1
1608 #define PXDB_VERSION_7_4        2
1609 #define PXDB_VERSION_CPP_30     3
1610 #define PXDB_VERSION_DDE_3_2A   4
1611 #define PXDB_VERSION_DDE_3_2    5
1612 #define PXDB_VERSION_DDE_4_0    6
1613
1614 #define PXDB_VERSION_2_1        1
1615
1616 /* Header version for the case that there is no DOC info
1617    but the executable has been processed by pxdb (the easy
1618    case, from "cc -g").  */
1619
1620 typedef struct PXDB_struct
1621 {
1622   int              pd_entries;   /* # of entries in function look-up table */
1623   int              fd_entries;   /* # of entries in file look-up table */
1624   int              md_entries;   /* # of entries in module look-up table */
1625   unsigned int     pxdbed : 1;   /* 1 => file has been preprocessed      */
1626   unsigned int     bighdr : 1;   /* 1 => this header contains 'time' word */
1627   unsigned int     sa_header : 1;/* 1 => created by SA version of pxdb */
1628                                    /*   used for version check in xdb */
1629   unsigned int     inlined: 1;   /* one or more functions have been inlined */
1630   unsigned int     spare:12;
1631   short            version;      /* pxdb header version */
1632   int              globals;      /* index into the DNTT where GNTT begins */
1633   unsigned int     time;         /* modify time of file before being pxdbed */
1634   int              pg_entries;   /* # of entries in label look-up table */
1635   int              functions;    /* actual number of functions */
1636   int              files;        /* actual number of files */
1637   int              cd_entries;   /* # of entries in class look-up table */
1638   int              aa_entries;   /* # of entries in addr alias look-up table */
1639   int              oi_entries;   /* # of entries in object id look-up table */
1640 } PXDB_header, *PXDB_header_ptr;
1641
1642 /* Header version for the case that there is no DOC info and the
1643    executable has NOT been processed by pxdb.  */
1644
1645 typedef struct XDB_header_struct
1646 {
1647   long gntt_length;
1648   long lntt_length;
1649   long slt_length;
1650   long vt_length;
1651   long xt_length;
1652 } XDB_header;
1653
1654 /* Header version for the case that there is DOC info and the
1655    executable has been processed by pxdb. */
1656
1657 typedef struct DOC_info_PXDB_header_struct
1658 {
1659   unsigned int xdb_header: 1;         /* bit set if this is post-3.1 xdb */
1660   unsigned int doc_header: 1;         /* bit set if this is doc-style header */
1661   unsigned int version: 8;            /* version of pxdb see defines
1662                                          PXDB_VERSION_* in this file.  */
1663   unsigned int reserved_for_flags: 16;/* for future use; -- must be
1664                                          set to zero.  */
1665   unsigned int has_aux_pd_table: 1;   /* $GNTT$ has aux PD table */
1666   unsigned int has_expr_table: 1;     /* space has $EXPR$ */
1667   unsigned int has_range_table: 1;    /* space has $RANGE$ */
1668   unsigned int has_context_table: 1;  /* space has $SRC_CTXT$ */
1669   unsigned int has_lines_table: 1;    /* space contains a $LINES$
1670                                          subspace for line tables.  */
1671   unsigned int has_lt_offset_map: 1;  /* space contains an lt_offset
1672                                          subspace for line table mapping.  */
1673   /* The following fields are the same as those in the PXDB_header in $DEBUG$ */
1674   int           pd_entries;   /* # of entries in function look-up table */
1675   int           fd_entries;   /* # of entries in file look-up table */
1676   int           md_entries;   /* # of entries in module look-up table */
1677   unsigned int  pxdbed : 1;   /* 1 => file has been preprocessed      */
1678   unsigned int  bighdr : 1;   /* 1 => this header contains 'time' word */
1679   unsigned int  sa_header : 1;/* 1 => created by SA version of pxdb */
1680                               /*   used for version check in xdb */
1681   unsigned int  inlined: 1;   /* one or more functions have been inlined */
1682   unsigned int  spare : 28;
1683   int           globals;      /* index into the DNTT where GNTT begins */
1684   unsigned int  time;         /* modify time of file before being pxdbed */
1685   int           pg_entries;   /* # of entries in label look-up table */
1686   int           functions;    /* actual number of functions */
1687   int           files;        /* actual number of files */
1688   int           cd_entries;   /* # of entries in class look-up table */
1689   int           aa_entries;   /* # of entries in addr alias look-up table */
1690   int           oi_entries;   /* # of entries in object id look-up table */
1691 } DOC_info_PXDB_header;
1692
1693 /* Header version for the case that there is DOC info and the
1694    executable has NOT been processed by pxdb.  */
1695
1696 typedef struct DOC_info_header_struct
1697 {
1698   unsigned int xdb_header: 1;   /* bit set if this is post-3.1 xdb */
1699   unsigned int doc_header: 1;     /* bit set if this is doc-style header*/
1700   unsigned int version: 8;      /* version of debug/header
1701                                    format. For 10.0 the value
1702                                    will be 1. For "Davis" the value is 2.  */
1703   unsigned int reserved_for_flags: 18; /* for future use; -- must be set to zero.  */
1704   unsigned int has_range_table: 1;     /* space contains a $RANGE$ subspace for variable ranges.  */
1705   unsigned int has_context_table: 1;   /* space contains a $CTXT$ subspace for context/inline table.  */
1706   unsigned int has_lines_table: 1;     /* space contains a $LINES$ subspace for line tables. */
1707   unsigned int has_lt_offset_map: 1;   /* space contains an lt_offset subspace for line table mapping.  */
1708
1709   long   gntt_length;  /* same as old header */
1710   long   lntt_length;  /* same as old header */
1711   long   slt_length;   /* same as old header */
1712   long   vt_length;    /* same as old header */
1713   long   xt_length;    /* same as old header */
1714   long   ctxt_length;  /* present only if version >= 2 */
1715   long   range_length; /* present only if version >= 2 */
1716   long   expr_length;  /* present only if version >= 2 */
1717
1718 } DOC_info_header;
1719
1720 typedef union GenericDebugHeader_union
1721 {
1722    PXDB_header          no_doc;
1723    DOC_info_PXDB_header doc;
1724    XDB_header           no_pxdb_no_doc;
1725    DOC_info_header      no_pxdb_doc;
1726 } GenericDebugHeader;
1727
1728
1729 /*  Procedure Descriptor:
1730     An element of the procedure quick look-up table.  */
1731
1732 typedef struct quick_procedure
1733 {
1734   long           isym;          /* 0-based index of first symbol
1735                                    for procedure in $LNTT$,
1736                                    i.e. the procedure itself.  */
1737   CORE_ADDR      adrStart;      /* memory adr of start of proc  */
1738   CORE_ADDR      adrEnd;        /* memory adr of end of proc    */
1739   char          *sbAlias;       /* alias name of procedure      */
1740   char          *sbProc;        /* real name of procedure       */
1741   CORE_ADDR      adrBp;         /* address of entry breakpoint  */
1742   CORE_ADDR      adrExitBp;     /* address of exit breakpoint   */
1743   int            icd;           /* member of this class (index) */
1744   unsigned int   ipd;           /* index of template for this   */
1745                                 /* function (index)           */
1746   unsigned int   unused:    5;
1747   unsigned int   no_lt_offset: 1;/* no entry in lt_offset table */
1748   unsigned int   fTemplate: 1;  /* function template            */
1749   unsigned int   fExpansion: 1; /* function expansion           */
1750   unsigned int   linked   : 1;  /* linked with other expansions */
1751   unsigned int   duplicate: 1;  /* clone of another procedure   */
1752   unsigned int   overloaded:1;  /* overloaded function          */
1753   unsigned int   member:    1;  /* class member function        */
1754   unsigned int   constructor:1; /* constructor function         */
1755   unsigned int   destructor:1;  /* destructor function          */
1756   unsigned int   Static:    1;  /* static function              */
1757   unsigned int   Virtual:   1;  /* virtual function             */
1758   unsigned int   constant:  1;  /* constant function            */
1759   unsigned int   pure:      1;  /* pure (virtual) function      */
1760   unsigned int   language:  4;  /* procedure's language         */
1761   unsigned int   inlined:   1;  /* function has been inlined    */
1762   unsigned int   Operator:  1;  /* operator function            */
1763   unsigned int   stub:      1;  /* bodyless function            */
1764   unsigned int   optimize:  2;  /* optimization level           */
1765   unsigned int   level:     5;  /* nesting level (top=0)        */
1766 } quick_procedure_entry, *quick_procedure_entry_ptr;
1767
1768 /*  Source File Descriptor:
1769     An element of the source file quick look-up table.  */
1770
1771 typedef struct quick_source
1772 {
1773   long           isym;          /* 0-based index in $LNTT$ of
1774                                    first symbol for this file.     */
1775   CORE_ADDR      adrStart;      /* mem adr of start of file's code */
1776   CORE_ADDR      adrEnd;        /* mem adr of end of file's code   */
1777   char          *sbFile;        /* name of source file             */
1778   unsigned int   fHasDecl: 1;   /* do we have a .d file?           */
1779   unsigned int   fWarned:  1;   /* have warned about age problems? */
1780   unsigned int   fSrcfile: 1;   /* 0 => include 1=> source         */
1781   unsigned short ilnMac;        /* lines in file (0 if don't know) */
1782   int            ipd;           /* 0-based index of first procedure
1783                                    in this file, in the quick
1784                                    look-up table of procedures.    */
1785   unsigned int  *rgLn;          /* line pointer array, if any      */
1786 } quick_file_entry, *quick_file_entry_ptr;
1787
1788 /*  Module Descriptor:
1789     An element of the module quick reference table.  */
1790
1791 typedef struct quick_module
1792 {
1793   long           isym;             /* 0-based index of first
1794                                       symbol for module.        */
1795   CORE_ADDR      adrStart;         /* adr of start of mod.      */
1796   CORE_ADDR      adrEnd;           /* adr of end of mod.        */
1797   char          *sbAlias;          /* alias name of module      */
1798   char          *sbMod;            /* real name of module       */
1799   unsigned int   imports:       1; /* module have any imports?  */
1800   unsigned int   vars_in_front: 1; /* module globals in front?  */
1801   unsigned int   vars_in_gaps:  1; /* module globals in gaps?   */
1802   unsigned int   language:      4; /* type of language          */
1803   unsigned int   unused      : 25;
1804   unsigned int   unused2;          /* space for future stuff    */
1805 } quick_module_entry, *quick_module_entry_ptr;
1806
1807 /*  Auxiliary Procedure Descriptor:
1808     An element of the auxiliary procedure quick look-up table.  */
1809
1810 typedef struct quick_aux_procedure
1811 {
1812   long   isym_inln;     /* start on inline list for proc */
1813   long   spare;
1814 } quick_aux_procedure_entry, *quick_aux_procedure_entry_ptr;
1815
1816 /*  Paragraph Descriptor:
1817     An element of the paragraph quick look-up table.  */
1818
1819 typedef struct quick_paragraph
1820 {
1821   long             isym;       /* first symbol for label (index)  */
1822   CORE_ADDR        adrStart;   /* memory adr of start of label    */
1823   CORE_ADDR        adrEnd;     /* memory adr of end of label      */
1824   char            *sbLab;      /* name of label                   */
1825   unsigned int     inst;       /* Used in xdb to store inst @ bp  */
1826   unsigned int     sect:    1; /* true = section, false = parag.  */
1827   unsigned int     unused: 31; /* future use                      */
1828 } quick_paragraph_entry, *quick_paragraph_entry_ptr;
1829
1830 /* Class Descriptor:
1831    An element of the class quick look-up table.  */
1832
1833 typedef struct quick_class
1834 {
1835   char           *sbClass;      /* name of class                */
1836   long            isym;         /* class symbol (tag)           */
1837   unsigned int    type : 2;     /* 0=class, 1=union, 2=struct   */
1838   unsigned int    fTemplate : 1;/* class template               */
1839   unsigned int    expansion : 1;/* template expansion           */
1840   unsigned int    unused    :28;
1841   sltpointer      lowscope;     /* beginning of defined scope   */
1842   sltpointer      hiscope;      /* end of defined scope         */
1843 } quick_class_entry, *quick_class_entry_ptr;
1844
1845 /* Address Alias Entry
1846    An element of the address alias quick look-up table.  */
1847
1848 typedef struct quick_alias
1849 {
1850   CORE_ADDR     low;
1851   CORE_ADDR     high;
1852   int           index;
1853   unsigned int  unused : 31;
1854   unsigned int  alternate : 1;  /* alternate unnamed aliases?   */
1855 } quick_alias_entry, *quick_alias_entry_ptr;
1856
1857 /* Object Identification Entry
1858    An element of the object identification quick look-up table.  */
1859
1860 typedef struct quick_obj_ID
1861 {
1862   CORE_ADDR    obj_ident;       /* class identifier         */
1863   long         isym;            /* class symbol             */
1864   long         offset;          /* offset to object start   */
1865 } quick_obj_ID_entry, *quick_obj_ID_entry_ptr;
1866
1867 #endif /* HP_SYMTAB_INCLUDED */