1867 lines
		
	
	
		
			63 KiB
		
	
	
	
		
			C++
		
	
	
	
			
		
		
	
	
			1867 lines
		
	
	
		
			63 KiB
		
	
	
	
		
			C++
		
	
	
	
| /* Definitions and structures for reading debug symbols from the
 | |
|    native HP C compiler.
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| 
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|    Written by the Center for Software Science at the University of Utah
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|    and by Cygnus Support.
 | |
| 
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|    Copyright 1994, 1995, 1998, 1999, 2003 Free Software Foundation, Inc.
 | |
| 
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|    This program is free software; you can redistribute it and/or modify
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|    it under the terms of the GNU General Public License as published by
 | |
|    the Free Software Foundation; either version 2 of the License, or
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|    (at your option) any later version.
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| 
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|    This program is distributed in the hope that it will be useful,
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|    but WITHOUT ANY WARRANTY; without even the implied warranty of
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|    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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|    GNU General Public License for more details.
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| 
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|    You should have received a copy of the GNU General Public License
 | |
|    along with this program; if not, write to the Free Software
 | |
|    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
 | |
| 
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| #ifndef HP_SYMTAB_INCLUDED
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| #define HP_SYMTAB_INCLUDED
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| 
 | |
| /* General information:
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| 
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|    This header file defines and describes only the data structures
 | |
|    necessary to read debug symbols produced by the HP C compiler,
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|    HP ANSI C++ compiler, and HP FORTRAN 90 compiler using the
 | |
|    SOM object file format.  
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|    (For a full description of the debug format, ftp hpux-symtab.h from
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|    jaguar.cs.utah.edu:/dist).
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|    
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|    Additional notes (Rich Title)
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|    This file is a reverse-engineered version of a file called
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|    "symtab.h" which exists internal to HP's Computer Languages Organization
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|    in /CLO/Components/DDE/obj/som/symtab.h. Because HP's version of
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|    the file is copyrighted and not distributed, it is necessary for
 | |
|    GDB to use the reverse-engineered version that follows.
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|    Work was done by Cygnus to reverse-engineer the C subset of symtab.h.
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|    The WDB project has extended this to also contain the C++ 
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|    symbol definitions, the F90 symbol definitions, 
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|    and the DOC (debugging-optimized-code) symbol definitions.
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|    In some cases (the C++ symbol definitions)
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|    I have added internal documentation here that
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|    goes beyond what is supplied in HP's symtab.h. If we someday
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|    unify these files again, the extra comments should be merged back
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|    into HP's symtab.h.
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|   
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|    -------------------------------------------------------------------
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| 
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|    Debug symbols are contained entirely within an unloadable space called
 | |
|    $DEBUG$.  $DEBUG$ contains several subspaces which group related
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|    debug symbols.
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| 
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|    $GNTT$ contains information for global variables, types and contants.
 | |
| 
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|    $LNTT$ contains information for procedures (including nesting), scoping
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|    information, local variables, types, and constants.
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| 
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|    $SLT$ contains source line information so that code addresses may be
 | |
|    mapped to source lines.
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| 
 | |
|    $VT$ contains various strings and constants for named objects (variables,
 | |
|    typedefs, functions, etc).  Strings are stored as null-terminated character
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|    lists.  Constants always begin on word boundaries.  The first byte of
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|    the VT must be zero (a null string).
 | |
| 
 | |
|    $XT$ is not currently used by GDB.
 | |
| 
 | |
|    Many structures within the subspaces point to other structures within
 | |
|    the same subspace, or to structures within a different subspace.  These
 | |
|    pointers are represented as a structure index from the beginning of
 | |
|    the appropriate subspace.  */
 | |
| 
 | |
| /* Used to describe where a constant is stored.  */
 | |
| enum location_type
 | |
| {
 | |
|   LOCATION_IMMEDIATE,
 | |
|   LOCATION_PTR,
 | |
|   LOCATION_VT,
 | |
| };
 | |
| 
 | |
| /* Languages supported by this debug format.  Within the data structures
 | |
|    this type is limited to 4 bits for a maximum of 16 languages.  */
 | |
| enum hp_language
 | |
| {
 | |
|   HP_LANGUAGE_UNKNOWN,
 | |
|   HP_LANGUAGE_C,
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|   HP_LANGUAGE_FORTRAN,
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|   HP_LANGUAGE_F77 = HP_LANGUAGE_FORTRAN,
 | |
|   HP_LANGUAGE_PASCAL,
 | |
|   HP_LANGUAGE_MODCAL,
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|   HP_LANGUAGE_COBOL,
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|   HP_LANGUAGE_BASIC,
 | |
|   HP_LANGUAGE_ADA,
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|   HP_LANGUAGE_CPLUSPLUS,
 | |
|   HP_LANGUAGE_DMPASCAL
 | |
| };
 | |
| 
 | |
| 
 | |
| /* Basic data types available in this debug format.  Within the data
 | |
|    structures this type is limited to 5 bits for a maximum of 32 basic
 | |
|    data types.  */
 | |
| enum hp_type
 | |
| {
 | |
|   HP_TYPE_UNDEFINED, /* 0 */
 | |
|   HP_TYPE_BOOLEAN, /* 1 */
 | |
|   HP_TYPE_CHAR, /* 2 */
 | |
|   HP_TYPE_INT, /* 3 */
 | |
|   HP_TYPE_UNSIGNED_INT, /* 4 */
 | |
|   HP_TYPE_REAL, /* 5 */
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|   HP_TYPE_COMPLEX, /* 6 */
 | |
|   HP_TYPE_STRING200, /* 7 */
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|   HP_TYPE_LONGSTRING200, /* 8 */
 | |
|   HP_TYPE_TEXT, /* 9 */
 | |
|   HP_TYPE_FLABEL, /* 10 */
 | |
|   HP_TYPE_FTN_STRING_SPEC, /* 11 */
 | |
|   HP_TYPE_MOD_STRING_SPEC, /* 12 */
 | |
|   HP_TYPE_PACKED_DECIMAL, /* 13 */
 | |
|   HP_TYPE_REAL_3000, /* 14 */
 | |
|   HP_TYPE_MOD_STRING_3000, /* 15 */
 | |
|   HP_TYPE_ANYPOINTER, /* 16 */
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|   HP_TYPE_GLOBAL_ANYPOINTER, /* 17 */
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|   HP_TYPE_LOCAL_ANYPOINTER, /* 18 */
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|   HP_TYPE_COMPLEXS3000, /* 19 */
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|   HP_TYPE_FTN_STRING_S300_COMPAT, /* 20 */ 
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|   HP_TYPE_FTN_STRING_VAX_COMPAT, /* 21 */
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|   HP_TYPE_BOOLEAN_S300_COMPAT, /* 22 */
 | |
|   HP_TYPE_BOOLEAN_VAX_COMPAT, /* 23 */
 | |
|   HP_TYPE_WIDE_CHAR, /* 24 */
 | |
|   HP_TYPE_LONG, /* 25 */
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|   HP_TYPE_UNSIGNED_LONG, /* 26 */
 | |
|   HP_TYPE_DOUBLE, /* 27 */
 | |
|   HP_TYPE_TEMPLATE_ARG, /* 28 */
 | |
|   HP_TYPE_VOID /* 29 */
 | |
| };
 | |
| 
 | |
| /* An immediate name and type table entry.
 | |
| 
 | |
|    extension and immediate will always be one.
 | |
|    global will always be zero.
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|    hp_type is the basic type this entry describes.
 | |
|    bitlength is the length in bits for the basic type.  */
 | |
| struct dnttp_immediate
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int immediate:	1;
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|   unsigned int global:		1;
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|   unsigned int type: 		5;
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|   unsigned int bitlength:	24;
 | |
| };
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| 
 | |
| /* A nonimmediate name and type table entry.
 | |
| 
 | |
|    extension will always be one.
 | |
|    immediate will always be zero.
 | |
|    if global is zero, this entry points into the LNTT
 | |
|    if global is one, this entry points into the GNTT
 | |
|    index is the index within the GNTT or LNTT for this entry.  */
 | |
| struct dnttp_nonimmediate
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int immediate:	1;
 | |
|   unsigned int global:		1;
 | |
|   unsigned int index:		29;
 | |
| };
 | |
| 
 | |
| /* A pointer to an entry in the GNTT and LNTT tables.  It has two
 | |
|    forms depending on the type being described.
 | |
| 
 | |
|    The immediate form is used for simple entries and is one
 | |
|    word.
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| 
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|    The nonimmediate form is used for complex entries and contains
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|    an index into the LNTT or GNTT which describes the entire type.
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| 
 | |
|    If a dnttpointer is -1, then it is a NIL entry.  */
 | |
| 
 | |
| #define DNTTNIL (-1)
 | |
| typedef union dnttpointer
 | |
| {
 | |
|   struct dnttp_immediate    dntti;
 | |
|   struct dnttp_nonimmediate dnttp;
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|   int word;
 | |
| } dnttpointer;
 | |
| 
 | |
| /* An index into the source line table.  As with dnttpointers, a sltpointer
 | |
|    of -1 indicates a NIL entry.  */
 | |
| #define SLTNIL (-1)
 | |
| typedef int sltpointer;
 | |
| 
 | |
| /* Index into DOC (= "Debugging Optimized Code") line table.  */
 | |
| #define LTNIL (-1)
 | |
| typedef int ltpointer;
 | |
| 
 | |
| /* Index into context table.  */
 | |
| #define CTXTNIL (-1)
 | |
| typedef int ctxtpointer;
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| 
 | |
| /* Unsigned byte offset into the VT.  */
 | |
| typedef unsigned int vtpointer;
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| 
 | |
| /* A DNTT entry (used within the GNTT and LNTT).
 | |
| 
 | |
|    DNTT entries are variable sized objects, but are always a multiple
 | |
|    of 3 words (we call each group of 3 words a "block").
 | |
| 
 | |
|    The first bit in each block is an extension bit.  This bit is zero
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|    for the first block of a DNTT entry.  If the entry requires more
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|    than one block, then this bit is set to one in all blocks after
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|    the first one.  */
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| 
 | |
| /* Each DNTT entry describes a particular debug symbol (beginning of
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|    a source file, a function, variables, structures, etc.
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| 
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|    The type of the DNTT entry is stored in the "kind" field within the
 | |
|    DNTT entry itself.  */
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| 
 | |
| enum dntt_entry_type
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| {
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|   DNTT_TYPE_NIL = -1,
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|   DNTT_TYPE_SRCFILE,
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|   DNTT_TYPE_MODULE,
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|   DNTT_TYPE_FUNCTION,
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|   DNTT_TYPE_ENTRY,
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|   DNTT_TYPE_BEGIN,
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|   DNTT_TYPE_END,
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|   DNTT_TYPE_IMPORT,
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|   DNTT_TYPE_LABEL,
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|   DNTT_TYPE_FPARAM,
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|   DNTT_TYPE_SVAR,
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|   DNTT_TYPE_DVAR,
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|   DNTT_TYPE_HOLE1,
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|   DNTT_TYPE_CONST,
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|   DNTT_TYPE_TYPEDEF,
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|   DNTT_TYPE_TAGDEF,
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|   DNTT_TYPE_POINTER,
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|   DNTT_TYPE_ENUM,
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|   DNTT_TYPE_MEMENUM,
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|   DNTT_TYPE_SET,
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|   DNTT_TYPE_SUBRANGE,
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|   DNTT_TYPE_ARRAY,
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|   DNTT_TYPE_STRUCT,
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|   DNTT_TYPE_UNION,
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|   DNTT_TYPE_FIELD,
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|   DNTT_TYPE_VARIANT,
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|   DNTT_TYPE_FILE,
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|   DNTT_TYPE_FUNCTYPE,
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|   DNTT_TYPE_WITH,
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|   DNTT_TYPE_COMMON,
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|   DNTT_TYPE_COBSTRUCT,
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|   DNTT_TYPE_XREF,
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|   DNTT_TYPE_SA,
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|   DNTT_TYPE_MACRO,
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|   DNTT_TYPE_BLOCKDATA,
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|   DNTT_TYPE_CLASS_SCOPE,
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|   DNTT_TYPE_REFERENCE,
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|   DNTT_TYPE_PTRMEM,
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|   DNTT_TYPE_PTRMEMFUNC,
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|   DNTT_TYPE_CLASS,
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|   DNTT_TYPE_GENFIELD,
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|   DNTT_TYPE_VFUNC,
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|   DNTT_TYPE_MEMACCESS,
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|   DNTT_TYPE_INHERITANCE,
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|   DNTT_TYPE_FRIEND_CLASS,
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|   DNTT_TYPE_FRIEND_FUNC,
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|   DNTT_TYPE_MODIFIER,
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|   DNTT_TYPE_OBJECT_ID,
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|   DNTT_TYPE_MEMFUNC,
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|   DNTT_TYPE_TEMPLATE,
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|   DNTT_TYPE_TEMPLATE_ARG,
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|   DNTT_TYPE_FUNC_TEMPLATE,
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|   DNTT_TYPE_LINK,
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|   DNTT_TYPE_DYN_ARRAY_DESC,
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|   DNTT_TYPE_DESC_SUBRANGE,
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|   DNTT_TYPE_BEGIN_EXT,
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|   DNTT_TYPE_INLN,
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|   DNTT_TYPE_INLN_LIST,
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|   DNTT_TYPE_ALIAS,
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|   DNTT_TYPE_DOC_FUNCTION,
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|   DNTT_TYPE_DOC_MEMFUNC,
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|   DNTT_TYPE_MAX
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| };
 | |
| 
 | |
| /* DNTT_TYPE_SRCFILE:
 | |
| 
 | |
|    One DNTT_TYPE_SRCFILE symbol is output for the start of each source
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|    file and at the begin and end of an included file.  A DNTT_TYPE_SRCFILE
 | |
|    entry is also output before each DNTT_TYPE_FUNC symbol so that debuggers
 | |
|    can determine what file a function was defined in.
 | |
| 
 | |
|    LANGUAGE describes the source file's language.
 | |
| 
 | |
|    NAME points to an VT entry providing the source file's name.
 | |
| 
 | |
|    Note the name used for DNTT_TYPE_SRCFILE entries are exactly as seen
 | |
|    by the compiler (ie they may be relative or absolute).  C include files
 | |
|    via <> inclusion must use absolute paths.
 | |
| 
 | |
|    ADDRESS points to an SLT entry from which line number and code locations
 | |
|    may be determined.  */
 | |
| 
 | |
| struct dntt_type_srcfile
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:		10;    /* DNTT_TYPE_SRCFILE */
 | |
|   unsigned int language:	4;
 | |
|   unsigned int unused:		17;
 | |
|   vtpointer name;
 | |
|   sltpointer address;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_MODULE:
 | |
| 
 | |
|    A DNTT_TYPE_MODULE symbol is emitted for the start of a pascal
 | |
|    module or C source file. A module indicates a compilation unit
 | |
|    for name-scoping purposes; in that regard there should be 
 | |
|    a 1-1 correspondence between GDB "symtab"'s and MODULE symbol records.
 | |
| 
 | |
|    Each DNTT_TYPE_MODULE must have an associated DNTT_TYPE_END symbol.
 | |
| 
 | |
|    NAME points to a VT entry providing the module's name.  Note C
 | |
|    source files are considered nameless modules.
 | |
| 
 | |
|    ALIAS point to a VT entry providing a secondary name.
 | |
| 
 | |
|    ADDRESS points to an SLT entry from which line number and code locations
 | |
|    may be determined.  */
 | |
| 
 | |
| struct dntt_type_module
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:		10; 	/* DNTT_TYPE_MODULE */
 | |
|   unsigned int unused:		21;
 | |
|   vtpointer name;
 | |
|   vtpointer alias;
 | |
|   dnttpointer unused2;
 | |
|   sltpointer address;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_FUNCTION,
 | |
|    DNTT_TYPE_ENTRY,
 | |
|    DNTT_TYPE_BLOCKDATA,
 | |
|    DNTT_TYPE_MEMFUNC:
 | |
| 
 | |
|    A DNTT_TYPE_FUNCTION symbol is emitted for each function definition;
 | |
|    a DNTT_TYPE_ENTRY symbols is used for secondary entry points.  Both
 | |
|    symbols used the dntt_type_function structure.
 | |
|    A DNTT_TYPE_BLOCKDATA symbol is emitted ...?
 | |
|    A DNTT_TYPE_MEMFUNC symbol is emitted for inlined member functions (C++). 
 | |
| 
 | |
|    Each of DNTT_TYPE_FUNCTION must have a matching DNTT_TYPE_END.
 | |
| 
 | |
|    GLOBAL is nonzero if the function has global scope.
 | |
| 
 | |
|    LANGUAGE describes the function's source language.
 | |
| 
 | |
|    OPT_LEVEL describes the optimization level the function was compiled
 | |
|    with.
 | |
| 
 | |
|    VARARGS is nonzero if the function uses varargs.
 | |
| 
 | |
|    NAME points to a VT entry providing the function's name.
 | |
| 
 | |
|    ALIAS points to a VT entry providing a secondary name for the function.
 | |
| 
 | |
|    FIRSTPARAM points to a LNTT entry which describes the parameter list.
 | |
| 
 | |
|    ADDRESS points to an SLT entry from which line number and code locations
 | |
|    may be determined.
 | |
| 
 | |
|    ENTRYADDR is the memory address corresponding the function's entry point
 | |
| 
 | |
|    RETVAL points to a LNTT entry describing the function's return value.
 | |
| 
 | |
|    LOWADDR is the lowest memory address associated with this function.
 | |
| 
 | |
|    HIADDR is the highest memory address associated with this function.  */
 | |
| 
 | |
| struct dntt_type_function
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:		10;	/* DNTT_TYPE_FUNCTION,
 | |
| 				           DNTT_TYPE_ENTRY,
 | |
| 					   DNTT_TYPE_BLOCKDATA
 | |
| 					   or DNTT_TYPE_MEMFUNC */
 | |
|   unsigned int global:		1;
 | |
|   unsigned int language:	4;
 | |
|   unsigned int nest_level:	5;
 | |
|   unsigned int opt_level:	2;
 | |
|   unsigned int varargs:		1;
 | |
|   unsigned int lang_info:	4;
 | |
|   unsigned int inlined:		1;
 | |
|   unsigned int localalloc:	1;
 | |
|   unsigned int expansion:	1;
 | |
|   unsigned int unused:		1;
 | |
|   vtpointer name;
 | |
|   vtpointer alias;
 | |
|   dnttpointer firstparam;
 | |
|   sltpointer address;
 | |
|   CORE_ADDR entryaddr;
 | |
|   dnttpointer retval;
 | |
|   CORE_ADDR lowaddr;
 | |
|   CORE_ADDR hiaddr;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_BEGIN:
 | |
| 
 | |
|    A DNTT_TYPE_BEGIN symbol is emitted to begin a new nested scope.
 | |
|    Every DNTT_TYPE_BEGIN symbol must have a matching DNTT_TYPE_END symbol.
 | |
| 
 | |
|    CLASSFLAG is nonzero if this is the beginning of a c++ class definition.
 | |
| 
 | |
|    ADDRESS points to an SLT entry from which line number and code locations
 | |
|    may be determined.  */
 | |
| 
 | |
| struct dntt_type_begin
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:		10;
 | |
|   unsigned int classflag:	1;
 | |
|   unsigned int unused:		20;
 | |
|   sltpointer address;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_END:
 | |
| 
 | |
|    A DNTT_TYPE_END symbol is emitted when closing a scope started by
 | |
|    a DNTT_TYPE_MODULE, DNTT_TYPE_FUNCTION, DNTT_TYPE_WITH,
 | |
|    DNTT_TYPE_COMMON, DNTT_TYPE_BEGIN, and DNTT_TYPE_CLASS_SCOPE symbols.
 | |
| 
 | |
|    ENDKIND describes what type of scope the DNTT_TYPE_END is closing
 | |
|    (one of the above 6 kinds).
 | |
| 
 | |
|    CLASSFLAG is nonzero if this is the end of a c++ class definition.
 | |
| 
 | |
|    ADDRESS points to an SLT entry from which line number and code locations
 | |
|    may be determined.
 | |
| 
 | |
|    BEGINSCOPE points to the LNTT entry which opened the scope.  */
 | |
| 
 | |
| struct dntt_type_end
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:		10;
 | |
|   unsigned int endkind:		10;
 | |
|   unsigned int classflag:	1;
 | |
|   unsigned int unused:		10;
 | |
|   sltpointer address;
 | |
|   dnttpointer beginscope;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_IMPORT is unused by GDB.  */
 | |
| /* DNTT_TYPE_LABEL is unused by GDB.  */
 | |
| 
 | |
| /* DNTT_TYPE_FPARAM:
 | |
| 
 | |
|    A DNTT_TYPE_FPARAM symbol is emitted for a function argument.  When
 | |
|    chained together the symbols represent an argument list for a function.
 | |
| 
 | |
|    REGPARAM is nonzero if this parameter was passed in a register.
 | |
| 
 | |
|    INDIRECT is nonzero if this parameter is a pointer to the parameter
 | |
|    (pass by reference or pass by value for large items).
 | |
| 
 | |
|    LONGADDR is nonzero if the parameter is a 64bit pointer.
 | |
| 
 | |
|    NAME is a pointer into the VT for the parameter's name.
 | |
| 
 | |
|    LOCATION describes where the parameter is stored.  Depending on the
 | |
|    parameter type LOCATION could be a register number, or an offset
 | |
|    from the stack pointer.
 | |
| 
 | |
|    TYPE points to a NTT entry describing the type of this parameter.
 | |
| 
 | |
|    NEXTPARAM points to the LNTT entry describing the next parameter.  */
 | |
| 
 | |
| struct dntt_type_fparam
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:		10;
 | |
|   unsigned int regparam:	1;
 | |
|   unsigned int indirect:	1;
 | |
|   unsigned int longaddr:	1;
 | |
|   unsigned int copyparam:	1;
 | |
|   unsigned int dflt:		1;
 | |
|   unsigned int doc_ranges:	1;
 | |
|   unsigned int misc_kind:       1;
 | |
|   unsigned int unused:		14;
 | |
|   vtpointer name;
 | |
|   CORE_ADDR location;
 | |
|   dnttpointer type;
 | |
|   dnttpointer nextparam;
 | |
|   int misc;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_SVAR:
 | |
| 
 | |
|    A DNTT_TYPE_SVAR is emitted to describe a variable in static storage.
 | |
| 
 | |
|    GLOBAL is nonzero if the variable has global scope.
 | |
| 
 | |
|    INDIRECT is nonzero if the variable is a pointer to an object.
 | |
| 
 | |
|    LONGADDR is nonzero if the variable is in long pointer space.
 | |
| 
 | |
|    STATICMEM is nonzero if the variable is a member of a class.
 | |
| 
 | |
|    A_UNION is nonzero if the variable is an anonymous union member.
 | |
| 
 | |
|    NAME is a pointer into the VT for the variable's name.
 | |
| 
 | |
|    LOCATION provides the memory address for the variable.
 | |
| 
 | |
|    TYPE is a pointer into either the GNTT or LNTT which describes
 | |
|    the type of this variable.  */
 | |
| 
 | |
| struct dntt_type_svar
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:		10;
 | |
|   unsigned int global:		1;
 | |
|   unsigned int indirect:	1;
 | |
|   unsigned int longaddr:	1;
 | |
|   unsigned int staticmem:	1;
 | |
|   unsigned int a_union:		1;
 | |
|   unsigned int unused1:         1;
 | |
|   unsigned int thread_specific: 1;
 | |
|   unsigned int unused2:         14;
 | |
|   vtpointer name;
 | |
|   CORE_ADDR location;
 | |
|   dnttpointer type;
 | |
|   unsigned int offset;
 | |
|   unsigned int displacement;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_DVAR:
 | |
| 
 | |
|    A DNTT_TYPE_DVAR is emitted to describe automatic variables and variables
 | |
|    held in registers.
 | |
| 
 | |
|    GLOBAL is nonzero if the variable has global scope.
 | |
| 
 | |
|    INDIRECT is nonzero if the variable is a pointer to an object.
 | |
| 
 | |
|    REGVAR is nonzero if the variable is in a register.
 | |
| 
 | |
|    A_UNION is nonzero if the variable is an anonymous union member.
 | |
| 
 | |
|    NAME is a pointer into the VT for the variable's name.
 | |
| 
 | |
|    LOCATION provides the memory address or register number for the variable.
 | |
| 
 | |
|    TYPE is a pointer into either the GNTT or LNTT which describes
 | |
|    the type of this variable.  */
 | |
| 
 | |
| struct dntt_type_dvar
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:		10;
 | |
|   unsigned int global:		1;
 | |
|   unsigned int indirect:	1;
 | |
|   unsigned int regvar:		1;
 | |
|   unsigned int a_union:		1;
 | |
|   unsigned int unused:		17;
 | |
|   vtpointer name;
 | |
|   int location;
 | |
|   dnttpointer type;
 | |
|   unsigned int offset;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_CONST:
 | |
| 
 | |
|    A DNTT_TYPE_CONST symbol is emitted for program constants.
 | |
| 
 | |
|    GLOBAL is nonzero if the constant has global scope.
 | |
| 
 | |
|    INDIRECT is nonzero if the constant is a pointer to an object.
 | |
| 
 | |
|    LOCATION_TYPE describes where to find the constant's value
 | |
|    (in the VT, memory, or embedded in an instruction).
 | |
| 
 | |
|    CLASSMEM is nonzero if the constant is a member of a class.
 | |
| 
 | |
|    NAME is a pointer into the VT for the constant's name.
 | |
| 
 | |
|    LOCATION provides the memory address, register number or pointer
 | |
|    into the VT for the constant's value.
 | |
| 
 | |
|    TYPE is a pointer into either the GNTT or LNTT which describes
 | |
|    the type of this variable.  */
 | |
| 
 | |
| struct dntt_type_const
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:		10;
 | |
|   unsigned int global:		1;
 | |
|   unsigned int indirect:	1;
 | |
|   unsigned int location_type:	3;
 | |
|   unsigned int classmem:	1;
 | |
|   unsigned int unused:		15;
 | |
|   vtpointer name;
 | |
|   CORE_ADDR location;
 | |
|   dnttpointer type;
 | |
|   unsigned int offset;
 | |
|   unsigned int displacement;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_TYPEDEF and DNTT_TYPE_TAGDEF:
 | |
| 
 | |
|    The same structure is used to describe typedefs and tagdefs.
 | |
| 
 | |
|    DNTT_TYPE_TYPEDEFS are associated with C "typedefs".
 | |
| 
 | |
|    DNTT_TYPE_TAGDEFs are associated with C "struct", "union", and "enum"
 | |
|    tags, which may have the same name as a typedef in the same scope.
 | |
|    Also they are associated with C++ "class" tags, which implicitly have 
 | |
|    the same name as the class type.
 | |
| 
 | |
|    GLOBAL is nonzero if the typedef/tagdef has global scope.
 | |
| 
 | |
|    TYPEINFO is used to determine if full type information is available
 | |
|    for a tag.  (usually 1, but can be zero for opaque types in C).
 | |
| 
 | |
|    NAME is a pointer into the VT for the constant's name.
 | |
| 
 | |
|    TYPE points to the underlying type for the typedef/tagdef in the
 | |
|    GNTT or LNTT.  */
 | |
| 
 | |
| struct dntt_type_type
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:		10;    /* DNTT_TYPE_TYPEDEF or 
 | |
|                                           DNTT_TYPE_TAGDEF.  */
 | |
|   unsigned int global:		1;
 | |
|   unsigned int typeinfo:	1;
 | |
|   unsigned int unused:		19;
 | |
|   vtpointer name;
 | |
|   dnttpointer type;                    /* Underlying type, which for TAGDEF's may be
 | |
|                                           DNTT_TYPE_STRUCT, DNTT_TYPE_UNION,
 | |
|                                           DNTT_TYPE_ENUM, or DNTT_TYPE_CLASS. 
 | |
|                                           For TYPEDEF's other underlying types
 | |
|                                           are also possible.  */
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_POINTER:
 | |
| 
 | |
|    Used to describe a pointer to an underlying type.
 | |
| 
 | |
|    POINTSTO is a pointer into the GNTT or LNTT for the type which this
 | |
|    pointer points to.
 | |
| 
 | |
|    BITLENGTH is the length of the pointer (not the underlying type). */
 | |
| 
 | |
| struct dntt_type_pointer
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:		10;
 | |
|   unsigned int unused:		21;
 | |
|   dnttpointer pointsto;
 | |
|   unsigned int bitlength;
 | |
| };
 | |
| 
 | |
| 
 | |
| /* DNTT_TYPE_ENUM:
 | |
| 
 | |
|    Used to describe enumerated types.
 | |
| 
 | |
|    FIRSTMEM is a pointer to a DNTT_TYPE_MEMENUM in the GNTT/LNTT which
 | |
|    describes the first member (and contains a pointer to the chain of
 | |
|    members).
 | |
| 
 | |
|    BITLENGTH is the number of bits used to hold the values of the enum's
 | |
|    members.  */
 | |
| 
 | |
| struct dntt_type_enum
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:	10;
 | |
|   unsigned int unused:		21;
 | |
|   dnttpointer firstmem;
 | |
|   unsigned int bitlength;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_MEMENUM
 | |
| 
 | |
|    Used to describe members of an enumerated type.
 | |
| 
 | |
|    CLASSMEM is nonzero if this member is part of a class.
 | |
| 
 | |
|    NAME points into the VT for the name of this member.
 | |
| 
 | |
|    VALUE is the value of this enumeration member.
 | |
| 
 | |
|    NEXTMEM points to the next DNTT_TYPE_MEMENUM in the chain.  */
 | |
| 
 | |
| struct dntt_type_memenum
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:	10;
 | |
|   unsigned int classmem:	1;
 | |
|   unsigned int unused:		20;
 | |
|   vtpointer name;
 | |
|   unsigned int value;
 | |
|   dnttpointer nextmem;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_SET
 | |
| 
 | |
|    Used to describe PASCAL "set" type.
 | |
| 
 | |
|    DECLARATION describes the bitpacking of the set.
 | |
| 
 | |
|    SUBTYPE points to a DNTT entry describing the type of the members.
 | |
| 
 | |
|    BITLENGTH is the size of the set.  */ 
 | |
| 
 | |
| struct dntt_type_set
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:	10;
 | |
|   unsigned int declaration:	2;
 | |
|   unsigned int unused:		19;
 | |
|   dnttpointer subtype;
 | |
|   unsigned int bitlength;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_SUBRANGE
 | |
| 
 | |
|    Used to describe subrange type.
 | |
| 
 | |
|    DYN_LOW describes the lower bound of the subrange:
 | |
| 
 | |
|      00 for a constant lower bound (found in LOWBOUND).
 | |
| 
 | |
|      01 for a dynamic lower bound with the lower bound found in the
 | |
|      memory address pointed to by LOWBOUND.
 | |
| 
 | |
|      10 for a dynamic lower bound described by an variable found in the
 | |
|      DNTT/LNTT (LOWBOUND would be a pointer into the DNTT/LNTT).
 | |
| 
 | |
|    DYN_HIGH is similar to DYN_LOW, except it describes the upper bound.
 | |
| 
 | |
|    SUBTYPE points to the type of the subrange.
 | |
| 
 | |
|    BITLENGTH is the length in bits needed to describe the subrange's
 | |
|    values.  */
 | |
| 
 | |
| struct dntt_type_subrange
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:	10;
 | |
|   unsigned int dyn_low:		2;
 | |
|   unsigned int dyn_high:	2;
 | |
|   unsigned int unused:		17;
 | |
|   int lowbound;
 | |
|   int highbound;
 | |
|   dnttpointer subtype;
 | |
|   unsigned int bitlength;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_ARRAY
 | |
| 
 | |
|    Used to describe an array type.
 | |
| 
 | |
|    DECLARATION describes the bit packing used in the array.
 | |
| 
 | |
|    ARRAYISBYTES is nonzero if the field in arraylength describes the
 | |
|    length in bytes rather than in bits.  A value of zero is used to
 | |
|    describe an array with size 2**32.
 | |
| 
 | |
|    ELEMISBYTES is nonzero if the length if each element in the array
 | |
|    is describes in bytes rather than bits.  A value of zero is used
 | |
|    to an element with size 2**32.
 | |
| 
 | |
|    ELEMORDER is nonzero if the elements are indexed in increasing order.
 | |
| 
 | |
|    JUSTIFIED if the elements are left justified to index zero.
 | |
| 
 | |
|    ARRAYLENGTH is the length of the array.
 | |
| 
 | |
|    INDEXTYPE is a DNTT pointer to the type used to index the array.
 | |
| 
 | |
|    ELEMTYPE is a DNTT pointer to the type for the array elements.
 | |
| 
 | |
|    ELEMLENGTH is the length of each element in the array (including
 | |
|    any padding).
 | |
| 
 | |
|    Multi-dimensional arrays are represented by ELEMTYPE pointing to
 | |
|    another DNTT_TYPE_ARRAY.  */
 | |
| 
 | |
| struct dntt_type_array
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:	10;
 | |
|   unsigned int declaration:	2;
 | |
|   unsigned int dyn_low:		2;
 | |
|   unsigned int dyn_high:	2;
 | |
|   unsigned int arrayisbytes:	1;
 | |
|   unsigned int elemisbytes:	1;
 | |
|   unsigned int elemorder:	1;
 | |
|   unsigned int justified:	1;
 | |
|   unsigned int unused:		11;
 | |
|   unsigned int arraylength;
 | |
|   dnttpointer indextype;
 | |
|   dnttpointer elemtype;
 | |
|   unsigned int elemlength;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_STRUCT
 | |
| 
 | |
|    DNTT_TYPE_STRUCT is used to describe a C structure.
 | |
| 
 | |
|    DECLARATION describes the bitpacking used.
 | |
| 
 | |
|    FIRSTFIELD is a DNTT pointer to the first field of the structure
 | |
|    (each field contains a pointer to the next field, walk the list
 | |
|    to access all fields of the structure).
 | |
| 
 | |
|    VARTAGFIELD and VARLIST are used for Pascal variant records.
 | |
| 
 | |
|    BITLENGTH is the size of the structure in bits.  */
 | |
| 
 | |
| struct dntt_type_struct
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:	10;
 | |
|   unsigned int declaration:	2;
 | |
|   unsigned int unused:		19;
 | |
|   dnttpointer firstfield;
 | |
|   dnttpointer vartagfield;
 | |
|   dnttpointer varlist;
 | |
|   unsigned int bitlength;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_UNION
 | |
| 
 | |
|    DNTT_TYPE_UNION is used to describe a C union.
 | |
| 
 | |
|    FIRSTFIELD is a DNTT pointer to the beginning of the field chain.
 | |
| 
 | |
|    BITLENGTH is the size of the union in bits.  */
 | |
| 
 | |
| struct dntt_type_union
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:	10;
 | |
|   unsigned int unused:		21;
 | |
|   dnttpointer firstfield;
 | |
|   unsigned int bitlength;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_FIELD
 | |
| 
 | |
|    DNTT_TYPE_FIELD describes one field in a structure or union
 | |
|    or C++ class.
 | |
| 
 | |
|    VISIBILITY is used to describe the visibility of the field
 | |
|    (for c++.  public = 0, protected = 1, private = 2).
 | |
| 
 | |
|    A_UNION is nonzero if this field is a member of an anonymous union.
 | |
| 
 | |
|    STATICMEM is nonzero if this field is a static member of a template.
 | |
| 
 | |
|    NAME is a pointer into the VT for the name of the field.
 | |
| 
 | |
|    BITOFFSET gives the offset of this field in bits from the beginning
 | |
|    of the structure or union this field is a member of.
 | |
| 
 | |
|    TYPE is a DNTT pointer to the type describing this field.
 | |
| 
 | |
|    BITLENGTH is the size of the entry in bits.
 | |
| 
 | |
|    NEXTFIELD is a DNTT pointer to the next field in the chain.  */
 | |
| 
 | |
| struct dntt_type_field
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:	10;
 | |
|   unsigned int visibility:	2;
 | |
|   unsigned int a_union:		1;
 | |
|   unsigned int staticmem:	1;
 | |
|   unsigned int unused:		17;
 | |
|   vtpointer name;
 | |
|   unsigned int bitoffset;
 | |
|   dnttpointer type;
 | |
|   unsigned int bitlength;
 | |
|   dnttpointer nextfield;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_VARIANT is unused by GDB.  */
 | |
| /* DNTT_TYPE_FILE is unused by GDB.  */
 | |
| 
 | |
| /* DNTT_TYPE_FUNCTYPE
 | |
| 
 | |
|    I think this is used to describe a function type (e.g., would
 | |
|    be emitted as part of a function-pointer description).
 | |
| 
 | |
|    VARARGS is nonzero if this function uses varargs.
 | |
| 
 | |
|    FIRSTPARAM is a DNTT pointer to the first entry in the parameter
 | |
|    chain.
 | |
| 
 | |
|    RETVAL is a DNTT pointer to the type of the return value.  */
 | |
| 
 | |
| struct dntt_type_functype
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:		10;
 | |
|   unsigned int varargs:		1;
 | |
|   unsigned int info:		4;
 | |
|   unsigned int unused:		16;
 | |
|   unsigned int bitlength;
 | |
|   dnttpointer firstparam;
 | |
|   dnttpointer retval;
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_WITH is emitted by C++ to indicate "with" scoping semantics.
 | |
|    (Probably also emitted by PASCAL to support "with"...).
 | |
|    
 | |
|    C++ example: Say "memfunc" is a method of class "c", and say
 | |
|    "m" is a data member of class "c". Then from within "memfunc",
 | |
|    it is legal to reference "m" directly (e.g. you don't have to
 | |
|    say "this->m". The symbol table indicates
 | |
|    this by emitting a DNTT_TYPE_WITH symbol within the function "memfunc",
 | |
|    pointing to the type symbol for class "c".
 | |
|  
 | |
|    In GDB, this symbol record is unnecessary, 
 | |
|    because GDB's symbol lookup algorithm
 | |
|    infers the "with" semantics when it sees a "this" argument to the member
 | |
|    function. So GDB can safely ignore the DNTT_TYPE_WITH record.
 | |
| 
 | |
|    A DNTT_TYPE_WITH has a matching DNTT_TYPE_END symbol.  */
 | |
| 
 | |
| struct dntt_type_with
 | |
| {
 | |
|   unsigned int extension:	1;    /* always zero */
 | |
|   unsigned int kind:		10;   /* always DNTT_TYPE_WITH */
 | |
|   unsigned int addrtype:  	2;    /* 0 => STATTYPE                */
 | |
|                                       /* 1 => DYNTYPE                 */
 | |
|                                       /* 2 => REGTYPE                 */
 | |
|   unsigned int indirect: 	1;    /* 1 => pointer to object       */
 | |
|   unsigned int longaddr:  	1;    /* 1 => in long pointer space   */
 | |
|   unsigned int nestlevel: 	6;    /* # of nesting levels back     */
 | |
|   unsigned int doc_ranges: 	1;    /* 1 => location is range list  */
 | |
|   unsigned int unused:   	10;
 | |
|   long location;       		      /* where stored (allocated)     */
 | |
|   sltpointer address;
 | |
|   dnttpointer type;                   /* type of with expression      */
 | |
|   vtpointer name;                     /* name of with expression      */
 | |
|   unsigned long  offset;              /* byte offset from location    */
 | |
| };                                   
 | |
| 
 | |
| /* DNTT_TYPE_COMMON is unsupported by GDB.  */
 | |
| /* A DNTT_TYPE_COMMON symbol must have a matching DNTT_TYPE_END symbol */
 | |
| 
 | |
| /* DNTT_TYPE_COBSTRUCT is unsupported by GDB.  */
 | |
| /* DNTT_TYPE_XREF is unsupported by GDB.  */
 | |
| /* DNTT_TYPE_SA is unsupported by GDB.  */
 | |
| /* DNTT_TYPE_MACRO is unsupported by GDB */
 | |
| 
 | |
| /* DNTT_TYPE_BLOCKDATA has the same structure as DNTT_TYPE_FUNCTION */
 | |
| 
 | |
| /* The following are the C++ specific SOM records */
 | |
| 
 | |
| /*  The purpose of the DNTT_TYPE_CLASS_SCOPE is to bracket C++ methods
 | |
|     and indicate the method name belongs in the "class scope" rather
 | |
|     than in the module they are being defined in. For example:
 | |
| 
 | |
|     class c {
 | |
|     ...
 | |
|     void memfunc(); // member function
 | |
|     };
 | |
| 
 | |
|     void c::memfunc()   // definition of class c's "memfunc"
 | |
|     {
 | |
|     ...
 | |
|     }
 | |
| 
 | |
|     main()
 | |
|     {
 | |
|     ...
 | |
|     }
 | |
| 
 | |
|     In the above, the name "memfunc" is not directly visible from "main".
 | |
|     I.e., you have to say "break c::memfunc".
 | |
|     If it were a normal function (not a method), it would be visible
 | |
|     via the simple "break memfunc". Since "memfunc" otherwise looks
 | |
|     like a normal FUNCTION in the symbol table, the bracketing
 | |
|     CLASS_SCOPE is what is used to indicate it is really a method.
 | |
|     
 | |
| 
 | |
|    A DNTT_TYPE_CLASS_SCOPE symbol must have a matching DNTT_TYPE_END symbol.  */
 | |
| 
 | |
| struct dntt_type_class_scope
 | |
| {
 | |
|   unsigned int extension:   1;	   /* Always zero.  */
 | |
|   unsigned int kind:       10;     /* Always DNTT_TYPE_CLASS_SCOPE.  */
 | |
|   unsigned int unused:     21; 
 | |
|   sltpointer address         ;     /* Pointer to SLT entry.  */
 | |
|   dnttpointer type           ;     /* Pointer to class type DNTT.  */
 | |
| };
 | |
| 
 | |
| /* C++ reference parameter.
 | |
|    The structure of this record is the same as DNTT_TYPE_POINTER - 
 | |
|    refer to struct dntt_type_pointer.  */
 | |
| 
 | |
| /* The next two describe C++ pointer-to-data-member type, and 
 | |
|    pointer-to-member-function type, respectively.
 | |
|    DNTT_TYPE_PTRMEM and DNTT_TYPE_PTRMEMFUNC have the same structure.  */
 | |
| 
 | |
| struct dntt_type_ptrmem
 | |
| {
 | |
|   unsigned int extension:   1;	   /* Always zero.  */
 | |
|   unsigned int kind:       10;     /* Always DNTT_TYPE_PTRMEM.  */
 | |
|   unsigned int unused:	   21;
 | |
|   dnttpointer pointsto	     ;     /* Pointer to class DNTT.  */
 | |
|   dnttpointer memtype 	     ;     /* Type of member.  */
 | |
| };
 | |
| 
 | |
| struct dntt_type_ptrmemfunc
 | |
| {
 | |
|   unsigned int extension:   1;	   /* Always zero.  */
 | |
|   unsigned int kind:       10;     /* Always DNTT_TYPE_PTRMEMFUNC.  */
 | |
|   unsigned int unused:	   21;
 | |
|   dnttpointer pointsto	     ;     /* Pointer to class DNTT.  */
 | |
|   dnttpointer memtype 	     ;     /* Type of member.  */
 | |
| };
 | |
| 
 | |
| /* The DNTT_TYPE_CLASS symbol is emitted to describe a class type.
 | |
|    "memberlist" points to a chained list of FIELD or GENFIELD records
 | |
|    indicating the class members. "parentlist" points to a chained list
 | |
|    of INHERITANCE records indicating classes from which we inherit
 | |
|    fields.  */
 | |
| 
 | |
| struct dntt_type_class 
 | |
| {
 | |
|   unsigned int extension:   1;     /* Always zero.  */
 | |
|   unsigned int kind:       10;     /* Always DNTT_TYPE_CLASS.  */
 | |
|   unsigned int abstract:    1;     /* Is this an abstract class?  */
 | |
|   unsigned int class_decl:  2;     /* 0=class,1=union,2=struct.  */
 | |
|   unsigned int expansion:   1;     /* 1=template expansion.  */
 | |
|   unsigned int unused:     17;     
 | |
|   dnttpointer memberlist     ;     /* Ptr to chain of [GEN]FIELDs.  */
 | |
|   unsigned long vtbl_loc     ;     /* Offset in obj of ptr to vtbl.  */
 | |
|   dnttpointer parentlist     ;     /* Ptr to K_INHERITANCE list.  */
 | |
|   unsigned long bitlength    ;     /* Total at this level.  */
 | |
|   dnttpointer identlist      ;     /* Ptr to chain of class ident's.  */
 | |
|   dnttpointer friendlist     ;     /* Ptr to K_FRIEND list.  */
 | |
|   dnttpointer templateptr    ;     /* Ptr to template.  */
 | |
|   dnttpointer nextexp        ;     /* Ptr to next expansion.  */
 | |
| };
 | |
| 
 | |
| /* Class members are indicated via either the FIELD record (for
 | |
|    data members, same as for C struct fields), or by the GENFIELD record
 | |
|    (for member functions).  */
 | |
| 
 | |
| struct dntt_type_genfield
 | |
| {
 | |
|   unsigned int extension:   1;	   /* Always zero.  */
 | |
|   unsigned int kind:       10;     /* Always DNTT_TYPE_GENFIELD.  */
 | |
|   unsigned int visibility:  2;     /* Pub = 0, prot = 1, priv = 2.  */
 | |
|   unsigned int a_union:     1;     /* 1 => anonymous union member.  */
 | |
|   unsigned int unused:	   18;
 | |
|   dnttpointer field	     ;     /* Pointer to field or qualifier.  */
 | |
|   dnttpointer nextfield      ;     /* Pointer to next field.  */
 | |
| };
 | |
| 
 | |
| /* C++ virtual functions.  */
 | |
| 
 | |
| struct dntt_type_vfunc
 | |
| {
 | |
|   unsigned int extension:   1;	   /* always zero */
 | |
|   unsigned int kind:       10;     /* always DNTT_TYPE_VFUNC */
 | |
|   unsigned int pure:        1;     /* pure virtual function ?       */
 | |
|   unsigned int unused:	   20;
 | |
|   dnttpointer funcptr        ;     /* points to FUNCTION symbol     */
 | |
|   unsigned long vtbl_offset  ;     /* offset into vtbl for virtual  */
 | |
| };
 | |
| 
 | |
| /* Not precisely sure what this is intended for - DDE ignores it.  */
 | |
| 
 | |
| struct dntt_type_memaccess
 | |
| {
 | |
|   unsigned int extension:   1;	   /* always zero */
 | |
|   unsigned int kind:       10;     /* always DNTT_TYPE_MEMACCESS */
 | |
|   unsigned int unused:	   21;
 | |
|   dnttpointer classptr	     ;     /* pointer to base class         */
 | |
|   dnttpointer field          ;     /* pointer field                 */
 | |
| };
 | |
| 
 | |
| /* The DNTT_TYPE_INHERITANCE record describes derived classes.
 | |
|    In particular, the "parentlist" field of the CLASS record points
 | |
|    to a list of INHERITANCE records for classes from which we 
 | |
|    inherit members.  */
 | |
| 
 | |
| struct dntt_type_inheritance
 | |
| {
 | |
|   unsigned int extension:   1;	   /* always zero */
 | |
|   unsigned int kind:       10;     /* always DNTT_TYPE_INHERITANCE */
 | |
|   unsigned int Virtual:     1;     /* virtual base class ?          */
 | |
|   unsigned int visibility:  2;     /* pub = 0, prot = 1, priv = 2   */
 | |
|   unsigned int unused:	   18;
 | |
|   dnttpointer classname      ;     /* first parent class, if any    */
 | |
|   unsigned long offset       ;     /* offset to start of base class */
 | |
|   dnttpointer next           ;     /* pointer to next K_INHERITANCE */
 | |
|   unsigned long future[2]    ;     /* padding to 3-word block end   */
 | |
| };
 | |
| 
 | |
| /* C++ "friend" classes ... */
 | |
| 
 | |
| struct dntt_type_friend_class
 | |
| {
 | |
|   unsigned int extension:   1;	   /* always zero */
 | |
|   unsigned int kind:       10;     /* always DNTT_TYPE_FRIEND_CLASS */
 | |
|   unsigned int unused:	   21;
 | |
|   dnttpointer classptr       ;     /* pointer to class DNTT         */
 | |
|   dnttpointer next           ;     /* next DNTT_FRIEND              */
 | |
| };
 | |
| 
 | |
| struct dntt_type_friend_func
 | |
| {
 | |
|   unsigned int extension:   1;	   /* always zero */
 | |
|   unsigned int kind:       10;     /* always DNTT_TYPE_FRIEND_FUNC */
 | |
|   unsigned int unused:	   21;
 | |
|   dnttpointer funcptr        ;     /* pointer to function           */
 | |
|   dnttpointer classptr       ;     /* pointer to class DNTT         */
 | |
|   dnttpointer next           ;     /* next DNTT_FRIEND              */
 | |
|   unsigned long future[2]    ;     /* padding to 3-word block end   */
 | |
| };
 | |
| 
 | |
| /* DDE appears to ignore the DNTT_TYPE_MODIFIER record.
 | |
|    It could perhaps be used to give better "ptype" output in GDB;
 | |
|    otherwise it is probably safe for GDB to ignore it also.  */
 | |
| 
 | |
| struct dntt_type_modifier
 | |
| {
 | |
|   unsigned int extension:   1;	   /* always zero */
 | |
|   unsigned int kind:       10;     /* always DNTT_TYPE_MODIFIER */
 | |
|   unsigned int m_const:     1;     /* const                         */
 | |
|   unsigned int m_static:    1;     /* static                        */
 | |
|   unsigned int m_void:      1;     /* void                          */
 | |
|   unsigned int m_volatile:  1;     /* volatile                      */
 | |
|   unsigned int m_duplicate: 1;     /* duplicate                     */
 | |
|   unsigned int unused:	   16;
 | |
|   dnttpointer type           ;     /* subtype                       */
 | |
|   unsigned long future       ;     /* padding to 3-word block end   */
 | |
| };
 | |
| 
 | |
| /* I'm not sure what this was intended for - DDE ignores it.  */
 | |
| 
 | |
| struct dntt_type_object_id
 | |
| {
 | |
|   unsigned int extension:   1;	   /* always zero */
 | |
|   unsigned int kind:       10;     /* always DNTT_TYPE_OBJECT_ID */
 | |
|   unsigned int indirect:    1;     /* Is object_ident addr of addr? */
 | |
|   unsigned int unused:	   20;
 | |
|   unsigned long object_ident ;     /* object identifier             */
 | |
|   unsigned long offset       ;     /* offset to start of base class */
 | |
|   dnttpointer next           ;     /* pointer to next K_OBJECT_ID   */
 | |
|   unsigned long segoffset    ;     /* for linker fixup              */
 | |
|   unsigned long future       ;     /* padding to 3-word block end   */
 | |
| };
 | |
| 
 | |
| /* No separate dntt_type_memfunc; same as dntt_type_func */
 | |
| 
 | |
| /* Symbol records to support templates. These only get used
 | |
|    in DDE's "describe" output (like GDB's "ptype").  */
 | |
| 
 | |
| /* The TEMPLATE record is the header for a template-class.
 | |
|    Like the CLASS record, a TEMPLATE record has a memberlist that
 | |
|    points to a list of template members. It also has an arglist
 | |
|    pointing to a list of TEMPLATE_ARG records.  */
 | |
| 
 | |
| struct dntt_type_template
 | |
| {
 | |
|   unsigned int extension:   1;	   /* always zero */
 | |
|   unsigned int kind:       10;     /* always DNTT_TYPE_TEMPLATE */
 | |
|   unsigned int abstract:    1;     /* is this an abstract class?    */
 | |
|   unsigned int class_decl:  2;     /* 0=class,1=union,2=struct      */
 | |
|   unsigned int unused:	   18;
 | |
|   dnttpointer memberlist     ;     /* ptr to chain of K_[GEN]FIELDs */
 | |
|   long unused2               ;     /* offset in obj of ptr to vtbl  */
 | |
|   dnttpointer parentlist     ;     /* ptr to K_INHERITANCE list     */
 | |
|   unsigned long bitlength    ;     /* total at this level           */
 | |
|   dnttpointer identlist      ;     /* ptr to chain of class ident's */
 | |
|   dnttpointer friendlist     ;     /* ptr to K_FRIEND list          */
 | |
|   dnttpointer arglist        ;     /* ptr to argument list          */
 | |
|   dnttpointer expansions     ;     /* ptr to expansion list         */
 | |
| };
 | |
| 
 | |
| /* Template-class arguments are a list of TEMPL_ARG records
 | |
|    chained together. The "name" field is the name of the formal.
 | |
|    E.g.:
 | |
|    
 | |
|      template <class T> class q { ... };
 | |
|    
 | |
|    Then "T" is the name of the formal argument.  */
 | |
| 
 | |
| struct dntt_type_templ_arg
 | |
| {
 | |
|   unsigned int extension:   1;	   /* always zero */
 | |
|   unsigned int kind:       10;     /* always DNTT_TYPE_TEMPL_ARG */
 | |
|   unsigned int usagetype:   1;     /* 0 type-name 1 expression     */
 | |
|   unsigned int unused:	   20;
 | |
|   vtpointer name             ;     /* name of argument             */
 | |
|   dnttpointer type           ;     /* for non type arguments       */
 | |
|   dnttpointer nextarg        ;     /* Next argument if any         */
 | |
|   long future[2]             ;     /* padding to 3-word block end  */
 | |
| };
 | |
| 
 | |
| /* FUNC_TEMPLATE records are sort of like FUNCTION, but are emitted
 | |
|    for template member functions. E.g.,
 | |
|    
 | |
|      template <class T> class q
 | |
|      {
 | |
|         ...
 | |
|         void f();
 | |
|         ... 
 | |
|      };
 | |
|    
 | |
|    Within the list of FIELDs/GENFIELDs defining the member list
 | |
|    of the template "q", "f" would appear as a FUNC_TEMPLATE.
 | |
|    We'll also see instances of FUNCTION "f" records for each 
 | |
|    instantiation of the template.  */
 | |
| 
 | |
| struct dntt_type_func_template
 | |
| {
 | |
|   unsigned int extension:   1;	   /* always zero */
 | |
|   unsigned int kind:       10;     /* always DNTT_TYPE_FUNC_TEMPLATE */
 | |
|   unsigned int public:      1;     /* 1 => globally visible        */
 | |
|   unsigned int language:    4;     /* type of language             */
 | |
|   unsigned int level:       5;     /* nesting level (top level = 0)*/
 | |
|   unsigned int optimize:    2;     /* level of optimization        */
 | |
|   unsigned int varargs:     1;     /* ellipses.  Pascal/800 later  */ 
 | |
|   unsigned int info:        4;     /* lang-specific stuff; F_xxxx  */
 | |
|   unsigned int inlined:     1;
 | |
|   unsigned int localloc:    1;     /* 0 at top, 1 at end of block  */
 | |
|   unsigned int unused:      2;
 | |
|   vtpointer name             ;     /* name of function             */
 | |
|   vtpointer alias            ;     /* alternate name, if any       */
 | |
|   dnttpointer firstparam     ;     /* first FPARAM, if any         */
 | |
|   dnttpointer retval         ;     /* return type, if any          */
 | |
|   dnttpointer arglist        ;     /* ptr to argument list         */
 | |
| };
 | |
| 
 | |
| /* LINK is apparently intended to link together function template
 | |
|    definitions with their instantiations. However, it is not clear
 | |
|    why this would be needed, except to provide the information on
 | |
|    a "ptype" command. And as far as I can tell, aCC does not 
 | |
|    generate this record.  */
 | |
| 
 | |
| struct dntt_type_link
 | |
| {
 | |
|   unsigned int extension:   1;	   /* always zero */
 | |
|   unsigned int kind:       10;     /* always DNTT_TYPE_LINK */
 | |
|   unsigned int linkKind:    4;     /* always LINK_UNKNOWN          */
 | |
|   unsigned int unused:	   17;
 | |
|   long future1               ;     /* expansion                    */
 | |
|   dnttpointer ptr1           ;     /* link from template           */
 | |
|   dnttpointer ptr2           ;     /* to expansion                 */
 | |
|   long future[2]             ;     /* padding to 3-word block end  */
 | |
| };
 | |
| 
 | |
| /* end of C++ specific SOM's.  */
 | |
| 
 | |
| /* DNTT_TYPE_DYN_ARRAY_DESC is unused by GDB */
 | |
| /* DNTT_TYPE_DESC_SUBRANGE is unused by GDB */
 | |
| /* DNTT_TYPE_BEGIN_EXT is unused by GDB */
 | |
| /* DNTT_TYPE_INLN is unused by GDB */
 | |
| /* DNTT_TYPE_INLN_LIST is unused by GDB */
 | |
| /* DNTT_TYPE_ALIAS is unused by GDB */
 | |
| 
 | |
| struct dntt_type_doc_function
 | |
| {
 | |
|   unsigned int extension: 1;   /* always zero                  */
 | |
|   unsigned int kind:     10;   /* K_DOC_FUNCTION or            */
 | |
|                                /* K_DOC_MEMFUNC                */
 | |
|   unsigned int global:    1;   /* 1 => globally visible        */
 | |
|   unsigned int language:  4;   /* type of language             */
 | |
|   unsigned int level:     5;   /* nesting level (top level = 0)*/
 | |
|   unsigned int optimize:  2;   /* level of optimization        */
 | |
|   unsigned int varargs:   1;   /* ellipses.  Pascal/800 later  */
 | |
|   unsigned int info:      4;   /* lang-specific stuff; F_xxxx  */
 | |
|   unsigned int inlined:   1;
 | |
|   unsigned int localloc:  1;   /* 0 at top, 1 at end of block  */
 | |
|   unsigned int expansion: 1;   /* 1 = function expansion       */
 | |
|   unsigned int doc_clone: 1;
 | |
|   vtpointer name;              /* name of function             */
 | |
|   vtpointer alias;             /* alternate name, if any       */
 | |
|   dnttpointer firstparam;      /* first FPARAM, if any         */
 | |
|   sltpointer address;          /* code and text locations      */
 | |
|   CORE_ADDR entryaddr;         /* address of entry point       */
 | |
|   dnttpointer retval;          /* return type, if any          */
 | |
|   CORE_ADDR lowaddr;           /* lowest address of function   */
 | |
|   CORE_ADDR hiaddr;            /* highest address of function  */
 | |
|   dnttpointer inline_list;     /* pointer to first inline    */
 | |
|   ltpointer lt_offset;         /* start of frag/cp line table  */
 | |
|   ctxtpointer ctxt_offset;     /* start of context table for this routine */
 | |
| };
 | |
| 
 | |
| /* DNTT_TYPE_DOC_MEMFUNC is unused by GDB */
 | |
| 
 | |
| /* DNTT_TYPE_GENERIC and DNTT_TYPE_BLOCK are convience structures
 | |
|    so we can examine a DNTT entry in a generic fashion.  */
 | |
| struct dntt_type_generic
 | |
| {
 | |
|   unsigned int word[9];
 | |
| };
 | |
| 
 | |
| struct dntt_type_block
 | |
| {
 | |
|   unsigned int extension:	1;
 | |
|   unsigned int kind:            10;
 | |
|   unsigned int unused:		21;
 | |
|   unsigned int word[2];
 | |
| };
 | |
| 
 | |
| /* One entry in a DNTT (either the LNTT or GNTT).  
 | |
|    This is a union of the above 60 or so structure definitions.  */
 | |
| 
 | |
| union dnttentry
 | |
| {
 | |
|   struct dntt_type_srcfile dsfile;
 | |
|   struct dntt_type_module dmodule;
 | |
|   struct dntt_type_function dfunc;
 | |
|   struct dntt_type_function dentry;
 | |
|   struct dntt_type_begin dbegin;
 | |
|   struct dntt_type_end dend;
 | |
|   struct dntt_type_fparam dfparam;
 | |
|   struct dntt_type_svar dsvar;
 | |
|   struct dntt_type_dvar ddvar;
 | |
|   struct dntt_type_const dconst;
 | |
|   struct dntt_type_type dtype;
 | |
|   struct dntt_type_type dtag;
 | |
|   struct dntt_type_pointer dptr;
 | |
|   struct dntt_type_enum denum;
 | |
|   struct dntt_type_memenum dmember;
 | |
|   struct dntt_type_set dset;
 | |
|   struct dntt_type_subrange dsubr;
 | |
|   struct dntt_type_array darray;
 | |
|   struct dntt_type_struct dstruct;
 | |
|   struct dntt_type_union dunion;
 | |
|   struct dntt_type_field dfield;
 | |
|   struct dntt_type_functype dfunctype;
 | |
|   struct dntt_type_with dwith;
 | |
|   struct dntt_type_function dblockdata;
 | |
|   struct dntt_type_class_scope dclass_scope;
 | |
|   struct dntt_type_pointer dreference;
 | |
|   struct dntt_type_ptrmem dptrmem;
 | |
|   struct dntt_type_ptrmemfunc dptrmemfunc;
 | |
|   struct dntt_type_class dclass;
 | |
|   struct dntt_type_genfield dgenfield;
 | |
|   struct dntt_type_vfunc dvfunc;
 | |
|   struct dntt_type_memaccess dmemaccess;
 | |
|   struct dntt_type_inheritance dinheritance;
 | |
|   struct dntt_type_friend_class dfriend_class;
 | |
|   struct dntt_type_friend_func dfriend_func;
 | |
|   struct dntt_type_modifier dmodifier;
 | |
|   struct dntt_type_object_id dobject_id;
 | |
|   struct dntt_type_template dtemplate;
 | |
|   struct dntt_type_templ_arg dtempl_arg;
 | |
|   struct dntt_type_func_template dfunc_template;
 | |
|   struct dntt_type_link dlink;
 | |
|   struct dntt_type_doc_function ddocfunc;
 | |
|   struct dntt_type_generic dgeneric;
 | |
|   struct dntt_type_block dblock;
 | |
| };
 | |
| 
 | |
| /* Source line entry types.  */
 | |
| enum slttype
 | |
| {
 | |
|   SLT_NORMAL,
 | |
|   SLT_SRCFILE,
 | |
|   SLT_MODULE,
 | |
|   SLT_FUNCTION,
 | |
|   SLT_ENTRY,
 | |
|   SLT_BEGIN,
 | |
|   SLT_END,
 | |
|   SLT_WITH,
 | |
|   SLT_EXIT,
 | |
|   SLT_ASSIST,
 | |
|   SLT_MARKER,
 | |
|   SLT_CLASS_SCOPE,
 | |
|   SLT_INLN,
 | |
|   SLT_NORMAL_OFFSET,
 | |
| };
 | |
| 
 | |
| /* A normal source line entry.  Simply provides a mapping of a source
 | |
|    line number to a code address.
 | |
| 
 | |
|    SLTDESC will always be SLT_NORMAL or SLT_EXIT.  */
 | |
| 
 | |
| struct slt_normal
 | |
| {
 | |
|   unsigned int sltdesc:	4;
 | |
|   unsigned int line:	28;
 | |
|   CORE_ADDR address;
 | |
| };
 | |
| 
 | |
| struct slt_normal_off
 | |
| {
 | |
|   unsigned int sltdesc:	4;
 | |
|   unsigned int offset:	6;
 | |
|   unsigned int line:	22;
 | |
|   CORE_ADDR address;
 | |
| };
 | |
| 
 | |
| /* A special source line entry.  Provides a mapping of a declaration
 | |
|    to a line number.  These entries point back into the DNTT which
 | |
|    references them.  */
 | |
| 
 | |
| struct slt_special
 | |
| {
 | |
|   unsigned int sltdesc:	4;
 | |
|   unsigned int line:	28;
 | |
|   dnttpointer backptr;
 | |
| };
 | |
| 
 | |
| /* Used to describe nesting.
 | |
| 
 | |
|    For nested languages, an slt_assist entry must follow each SLT_FUNC
 | |
|    entry in the SLT.  The address field will point forward to the
 | |
|    first slt_normal entry within the function's scope.  */
 | |
| 
 | |
| struct slt_assist
 | |
| {
 | |
|   unsigned int sltdesc:	4;
 | |
|   unsigned int unused:	28;
 | |
|   sltpointer address;
 | |
| };
 | |
| 
 | |
| struct slt_generic
 | |
| {
 | |
|   unsigned int word[2];
 | |
| };
 | |
| 
 | |
| union sltentry
 | |
| {
 | |
|   struct slt_normal snorm;
 | |
|   struct slt_normal_off snormoff;
 | |
|   struct slt_special sspec;
 | |
|   struct slt_assist sasst;
 | |
|   struct slt_generic sgeneric;
 | |
| };
 | |
| 
 | |
| /* $LINES$ declarations
 | |
|    This is the line table used for optimized code, which is only present 
 | |
|    in the new $PROGRAM_INFO$ debug space.  */
 | |
| 
 | |
| #define DST_LN_ESCAPE_FLAG1   15
 | |
| #define DST_LN_ESCAPE_FLAG2   14
 | |
| #define DST_LN_CTX_SPEC1      13  
 | |
| #define DST_LN_CTX_SPEC2      12
 | |
| 
 | |
| /* Escape function codes:  */
 | |
| 
 | |
| typedef enum
 | |
| {
 | |
|   dst_ln_pad,          /* pad byte */
 | |
|   dst_ln_escape_1,     /* reserved */
 | |
|   dst_ln_dpc1_dln1,    /* 1 byte line delta, 1 byte pc delta */
 | |
|   dst_ln_dpc2_dln2,    /* 2 bytes line delta, 2 bytes pc delta */
 | |
|   dst_ln_pc4_ln4,      /* 4 bytes ABSOLUTE line number, 4 bytes ABSOLUTE pc */
 | |
|   dst_ln_dpc0_dln1,    /* 1 byte line delta, pc delta = 0 */
 | |
|   dst_ln_ln_off_1,     /* statement escape, stmt # = 1 (2nd stmt on line) */
 | |
|   dst_ln_ln_off,       /* statement escape, stmt # = next byte */
 | |
|   dst_ln_entry,        /* entry escape, next byte is entry number */
 | |
|   dst_ln_exit,         /* exit escape */
 | |
|   dst_ln_stmt_end,     /* gap escape, 4 bytes pc delta */
 | |
|   dst_ln_stmt_cp,      /* current stmt is a critical point */
 | |
|   dst_ln_escape_12,    /* reserved */
 | |
|   dst_ln_escape_13,    /* this is an exception site record */
 | |
|   dst_ln_nxt_byte,     /* next byte contains the real escape code */
 | |
|   dst_ln_end,          /* end escape, final entry follows */
 | |
|   dst_ln_escape1_END_OF_ENUM
 | |
| }
 | |
| dst_ln_escape1_t;
 | |
| 
 | |
| typedef enum
 | |
| {
 | |
|   dst_ln_ctx_1,        	/* next byte describes context switch with 5-bit */
 | |
|   			/* index into the image table and 3-bit run length. */
 | |
| 			/* If run length is 0, end with another cxt specifier or ctx_end */
 | |
|   dst_ln_ctx_2,        	/* next 2 bytes switch context: 13 bit index, 3 bit run length */
 | |
|   dst_ln_ctx_4,        	/* next 4 bytes switch context: 29 bit index, 3 bit run length */
 | |
|   dst_ln_ctx_end,      	/* end current context */
 | |
|   dst_ln_col_run_1,    	/* next byte is column position of start of next statement, */
 | |
|                         /* following byte is length of statement */
 | |
|   dst_ln_col_run_2,    	/* next 2 bytes is column position of start of next statement, */
 | |
|                         /* following 2 bytes is length of statement */
 | |
|   dst_ln_init_base1,   	/* next 4 bytes are absolute PC, followed by 1 byte of line number */
 | |
|   dst_ln_init_base2,   	/* next 4 bytes are absolute PC, followed by 2 bytes of line number */
 | |
|   dst_ln_init_base3,   	/* next 4 bytes are absolute PC, followed by 3 bytes of line number */
 | |
|   dst_ln_escape2_END_OF_ENUM
 | |
| }
 | |
| dst_ln_escape2_t;           
 | |
| 
 | |
| typedef union
 | |
| {
 | |
|   struct
 | |
|   {
 | |
|     unsigned int     pc_delta : 4;      /* 4 bit pc delta */
 | |
|     int              ln_delta : 4;      /* 4 bit line number delta */
 | |
|   }
 | |
|   delta;
 | |
| 
 | |
|   struct
 | |
|   {
 | |
|     unsigned int     esc_flag : 4;      /* alias for pc_delta  */
 | |
|     unsigned int     esc_code : 4;      /* escape function code (dst_ln_escape1_t, or ...2_t */
 | |
|   }
 | |
|   esc;
 | |
| 
 | |
|   struct
 | |
|   {
 | |
|     unsigned int     esc_flag   : 4;      /* dst_ln_ctx_spec1, or dst_ln_ctx_spec2 */
 | |
|     unsigned int     run_length : 2;      
 | |
|     unsigned int     ctx_index  : 2;      /* ...spec2 contains index;  ...spec1, index - 4 */
 | |
|   }
 | |
|   ctx_spec;
 | |
| 
 | |
|   char               sdata;               /* signed data byte */
 | |
|   unsigned char      udata;               /* unsigned data byte */
 | |
| }
 | |
| dst_ln_entry_t,
 | |
|   * dst_ln_entry_ptr_t;
 | |
| 
 | |
| /* Warning: although the above union occupies only 1 byte the compiler treats
 | |
|    it as having size 2 (the minimum size of a struct).  Therefore a sequence of
 | |
|    dst_ln_entry_t's cannot be described as an array, and walking through such a
 | |
|    sequence requires convoluted code such as
 | |
|         ln_ptr = (dst_ln_entry_ptr_t) (char*) ln_ptr + 1
 | |
|    We regret the inconvenience.  */
 | |
| 
 | |
| /* Structure for interpreting the byte following a dst_ln_ctx1 entry.  */
 | |
| typedef struct
 | |
| {
 | |
|     unsigned int          ctx1_index : 5;      /* 5 bit index into context table */
 | |
|     unsigned int          ctx1_run_length : 3; /* 3 bit run length */
 | |
| } dst_ln_ctx1_t,
 | |
|   *dst_ln_ctx1_ptr_t;
 | |
| 
 | |
| /* Structure for interpreting the bytes following a dst_ln_ctx2 entry.  */
 | |
| typedef struct
 | |
| {
 | |
|     unsigned int          ctx2_index : 13;     /* 13 bit index into context table */
 | |
|     unsigned int          ctx2_run_length : 3; /* 3 bit run length */
 | |
| } dst_ln_ctx2_t,
 | |
|   *dst_ln_ctx2_ptr_t;
 | |
| 
 | |
| /* Structure for interpreting the bytes following a dst_ln_ctx4 entry.  */
 | |
| typedef struct
 | |
| {
 | |
|     unsigned int          ctx4_index : 29;     /* 29 bit index into context table */
 | |
|     unsigned int          ctx4_run_length : 3; /* 3 bit run length */
 | |
| } dst_ln_ctx4_t,
 | |
|   *dst_ln_ctx4_ptr_t;
 | |
| 
 | |
| 
 | |
| /*  PXDB definitions.
 | |
|   
 | |
|    PXDB is a post-processor which takes the executable file
 | |
|    and massages the debug information so that the debugger may
 | |
|    start up and run more efficiently.  Some of the tasks
 | |
|    performed by PXDB are:
 | |
|   
 | |
|    o   Remove duplicate global type and variable information
 | |
|        from the GNTT,
 | |
|   
 | |
|    o   Append the GNTT onto the end of the LNTT and place both
 | |
|        back in the LNTT section,
 | |
|   
 | |
|    o   Build quick look-up tables (description follows) for
 | |
|        files, procedures, modules, and paragraphs (for Cobol),
 | |
|        placing these in the GNTT section,
 | |
|   
 | |
|    o   Reconstruct the header appearing in the header section
 | |
|        to access this information.
 | |
|   
 | |
|    The "quick look-up" tables are in the $GNTT$ sub-space, in
 | |
|    the following order:
 | |
|   
 | |
|        Procedures    -sorted by address
 | |
|        Source files  -sorted by address (of the
 | |
|                       generated code from routines)
 | |
|        Modules       -sorted by address
 | |
|        Classes       -<unsorted?>
 | |
|        Address Alias -sorted by index <?>
 | |
|        Object IDs    -sorted by object identifier
 | |
|   
 | |
|    Most quick entries have (0-based) indices into the LNTT tables to
 | |
|    the full entries for the item it describes.
 | |
|   
 | |
|    The post-PXDB header is in the $HEADER$ sub-space.  Alas, it
 | |
|    occurs in different forms, depending on the optimization level
 | |
|    in the compilation step and whether PXDB was run or not. The
 | |
|    worst part is the forms aren't self-describing, so we'll have
 | |
|    to grovel in the bits to figure out what kind we're looking at
 | |
|    (see hp_get_header in hp-psymtab-read.c).  */
 | |
| 
 | |
| /* PXDB versions.  */
 | |
| 
 | |
| #define PXDB_VERSION_CPLUSPLUS	1
 | |
| #define PXDB_VERSION_7_4	2
 | |
| #define PXDB_VERSION_CPP_30	3
 | |
| #define PXDB_VERSION_DDE_3_2A	4
 | |
| #define PXDB_VERSION_DDE_3_2	5
 | |
| #define PXDB_VERSION_DDE_4_0	6
 | |
| 
 | |
| #define PXDB_VERSION_2_1	1
 | |
| 
 | |
| /* Header version for the case that there is no DOC info
 | |
|    but the executable has been processed by pxdb (the easy
 | |
|    case, from "cc -g").  */
 | |
| 
 | |
| typedef struct PXDB_struct
 | |
| {
 | |
|   int              pd_entries;   /* # of entries in function look-up table */
 | |
|   int              fd_entries;   /* # of entries in file look-up table */
 | |
|   int              md_entries;   /* # of entries in module look-up table */
 | |
|   unsigned int     pxdbed : 1;   /* 1 => file has been preprocessed      */
 | |
|   unsigned int     bighdr : 1;   /* 1 => this header contains 'time' word */
 | |
|   unsigned int     sa_header : 1;/* 1 => created by SA version of pxdb */
 | |
| 			           /*   used for version check in xdb */
 | |
|   unsigned int     inlined: 1;   /* one or more functions have been inlined */
 | |
|   unsigned int     spare:12;
 | |
|   short            version;      /* pxdb header version */
 | |
|   int              globals;      /* index into the DNTT where GNTT begins */
 | |
|   unsigned int     time;         /* modify time of file before being pxdbed */
 | |
|   int              pg_entries;   /* # of entries in label look-up table */
 | |
|   int              functions;    /* actual number of functions */
 | |
|   int              files;        /* actual number of files */
 | |
|   int              cd_entries;   /* # of entries in class look-up table */
 | |
|   int              aa_entries;   /* # of entries in addr alias look-up table */
 | |
|   int              oi_entries;   /* # of entries in object id look-up table */
 | |
| } PXDB_header, *PXDB_header_ptr;
 | |
| 
 | |
| /* Header version for the case that there is no DOC info and the
 | |
|    executable has NOT been processed by pxdb.  */
 | |
| 
 | |
| typedef struct XDB_header_struct
 | |
| {
 | |
|   long gntt_length; 
 | |
|   long lntt_length; 
 | |
|   long slt_length; 
 | |
|   long vt_length; 
 | |
|   long xt_length; 
 | |
| } XDB_header;
 | |
| 
 | |
| /* Header version for the case that there is DOC info and the
 | |
|    executable has been processed by pxdb. */
 | |
| 
 | |
| typedef struct DOC_info_PXDB_header_struct
 | |
| {
 | |
|   unsigned int xdb_header: 1; 	      /* bit set if this is post-3.1 xdb */ 
 | |
|   unsigned int doc_header: 1;         /* bit set if this is doc-style header */
 | |
|   unsigned int version: 8;            /* version of pxdb see defines
 | |
| 				         PXDB_VERSION_* in this file.  */
 | |
|   unsigned int reserved_for_flags: 16;/* for future use; -- must be 
 | |
|                                          set to zero.  */
 | |
|   unsigned int has_aux_pd_table: 1;   /* $GNTT$ has aux PD table */
 | |
|   unsigned int has_expr_table: 1;     /* space has $EXPR$ */       
 | |
|   unsigned int has_range_table: 1;    /* space has $RANGE$ */       
 | |
|   unsigned int has_context_table: 1;  /* space has $SRC_CTXT$ */    
 | |
|   unsigned int has_lines_table: 1;    /* space contains a $LINES$
 | |
|                                          subspace for line tables.  */
 | |
|   unsigned int has_lt_offset_map: 1;  /* space contains an lt_offset
 | |
|                                          subspace for line table mapping.  */
 | |
|   /* The following fields are the same as those in the PXDB_header in $DEBUG$ */
 | |
|   int           pd_entries;   /* # of entries in function look-up table */
 | |
|   int           fd_entries;   /* # of entries in file look-up table */
 | |
|   int           md_entries;   /* # of entries in module look-up table */
 | |
|   unsigned int  pxdbed : 1;   /* 1 => file has been preprocessed      */
 | |
|   unsigned int  bighdr : 1;   /* 1 => this header contains 'time' word */
 | |
|   unsigned int  sa_header : 1;/* 1 => created by SA version of pxdb */
 | |
|                               /*   used for version check in xdb */
 | |
|   unsigned int  inlined: 1;   /* one or more functions have been inlined */
 | |
|   unsigned int  spare : 28;
 | |
|   int      	globals;      /* index into the DNTT where GNTT begins */
 | |
|   unsigned int  time;         /* modify time of file before being pxdbed */
 | |
|   int           pg_entries;   /* # of entries in label look-up table */
 | |
|   int           functions;    /* actual number of functions */
 | |
|   int           files;        /* actual number of files */
 | |
|   int           cd_entries;   /* # of entries in class look-up table */
 | |
|   int           aa_entries;   /* # of entries in addr alias look-up table */
 | |
|   int           oi_entries;   /* # of entries in object id look-up table */
 | |
| } DOC_info_PXDB_header;
 | |
| 
 | |
| /* Header version for the case that there is DOC info and the
 | |
|    executable has NOT been processed by pxdb.  */
 | |
| 
 | |
| typedef struct DOC_info_header_struct
 | |
| {
 | |
|   unsigned int xdb_header: 1; 	/* bit set if this is post-3.1 xdb */ 
 | |
|   unsigned int doc_header: 1;     /* bit set if this is doc-style header*/
 | |
|   unsigned int version: 8;      /* version of debug/header 
 | |
|                                    format. For 10.0 the value 
 | |
|                                    will be 1. For "Davis" the value is 2.  */
 | |
|   unsigned int reserved_for_flags: 18; /* for future use; -- must be set to zero.  */
 | |
|   unsigned int has_range_table: 1;     /* space contains a $RANGE$ subspace for variable ranges.  */
 | |
|   unsigned int has_context_table: 1;   /* space contains a $CTXT$ subspace for context/inline table.  */
 | |
|   unsigned int has_lines_table: 1;     /* space contains a $LINES$ subspace for line tables. */
 | |
|   unsigned int has_lt_offset_map: 1;   /* space contains an lt_offset subspace for line table mapping.  */
 | |
| 
 | |
|   long   gntt_length;  /* same as old header */
 | |
|   long   lntt_length;  /* same as old header */
 | |
|   long   slt_length;   /* same as old header */
 | |
|   long   vt_length;    /* same as old header */
 | |
|   long   xt_length;    /* same as old header */
 | |
|   long   ctxt_length;  /* present only if version >= 2 */
 | |
|   long   range_length; /* present only if version >= 2 */
 | |
|   long   expr_length;  /* present only if version >= 2 */
 | |
| 
 | |
| } DOC_info_header;
 | |
| 
 | |
| typedef union GenericDebugHeader_union
 | |
| {
 | |
|    PXDB_header          no_doc;
 | |
|    DOC_info_PXDB_header doc;
 | |
|    XDB_header           no_pxdb_no_doc;
 | |
|    DOC_info_header      no_pxdb_doc;
 | |
| } GenericDebugHeader;
 | |
| 
 | |
| 
 | |
| /*  Procedure Descriptor:
 | |
|     An element of the procedure quick look-up table.  */
 | |
| 
 | |
| typedef struct quick_procedure
 | |
| {
 | |
|   long           isym;		/* 0-based index of first symbol
 | |
|                                    for procedure in $LNTT$, 
 | |
|                                    i.e. the procedure itself.  */
 | |
|   CORE_ADDR	 adrStart;	/* memory adr of start of proc	*/
 | |
|   CORE_ADDR	 adrEnd;	/* memory adr of end of proc	*/
 | |
|   char         	*sbAlias;	/* alias name of procedure	*/
 | |
|   char          *sbProc;	/* real name of procedure	*/
 | |
|   CORE_ADDR	 adrBp;		/* address of entry breakpoint  */
 | |
|   CORE_ADDR	 adrExitBp;	/* address of exit breakpoint   */
 | |
|   int            icd;           /* member of this class (index) */	
 | |
|   unsigned int	 ipd;		/* index of template for this   */
 | |
|                                 /* function (index)           */
 | |
|   unsigned int	 unused:    5;
 | |
|   unsigned int	 no_lt_offset: 1;/* no entry in lt_offset table */
 | |
|   unsigned int	 fTemplate: 1;	/* function template		*/
 | |
|   unsigned int	 fExpansion: 1;	/* function expansion		*/
 | |
|   unsigned int	 linked	  : 1;	/* linked with other expansions	*/
 | |
|   unsigned int	 duplicate: 1;  /* clone of another procedure   */
 | |
|   unsigned int	 overloaded:1;  /* overloaded function          */
 | |
|   unsigned int	 member:    1;  /* class member function        */
 | |
|   unsigned int	 constructor:1; /* constructor function         */
 | |
|   unsigned int	 destructor:1;  /* destructor function          */
 | |
|   unsigned int   Static:    1;  /* static function              */
 | |
|   unsigned int   Virtual:   1;  /* virtual function             */
 | |
|   unsigned int   constant:  1;  /* constant function            */
 | |
|   unsigned int   pure:      1;  /* pure (virtual) function      */
 | |
|   unsigned int   language:  4;  /* procedure's language         */
 | |
|   unsigned int   inlined:   1;  /* function has been inlined    */
 | |
|   unsigned int   Operator:  1;  /* operator function            */
 | |
|   unsigned int	 stub:      1;  /* bodyless function            */
 | |
|   unsigned int	 optimize:  2;	/* optimization level   	*/
 | |
|   unsigned int	 level:     5;	/* nesting level (top=0)	*/
 | |
| } quick_procedure_entry, *quick_procedure_entry_ptr;
 | |
| 
 | |
| /*  Source File Descriptor:
 | |
|     An element of the source file quick look-up table.  */
 | |
| 
 | |
| typedef struct quick_source
 | |
| {
 | |
|   long	         isym;		/* 0-based index in $LNTT$ of
 | |
|                                    first symbol for this file.     */
 | |
|   CORE_ADDR      adrStart;	/* mem adr of start of file's code */
 | |
|   CORE_ADDR      adrEnd;	/* mem adr of end of file's code   */
 | |
|   char	        *sbFile;	/* name of source file		   */
 | |
|   unsigned int   fHasDecl: 1;	/* do we have a .d file?	   */
 | |
|   unsigned int   fWarned:  1;	/* have warned about age problems? */
 | |
|   unsigned int   fSrcfile: 1;   /* 0 => include 1=> source         */
 | |
|   unsigned short ilnMac;	/* lines in file (0 if don't know) */
 | |
|   int	         ipd;		/* 0-based index of first procedure
 | |
|                                    in this file, in the quick
 | |
|                                    look-up table of procedures.    */
 | |
|   unsigned int  *rgLn;		/* line pointer array, if any	   */
 | |
| } quick_file_entry, *quick_file_entry_ptr;
 | |
| 
 | |
| /*  Module Descriptor:
 | |
|     An element of the module quick reference table.  */
 | |
| 
 | |
| typedef struct quick_module
 | |
| {
 | |
|   long           isym;		   /* 0-based index of first
 | |
|                                       symbol for module.        */
 | |
|   CORE_ADDR	 adrStart;	   /* adr of start of mod.	*/
 | |
|   CORE_ADDR	 adrEnd;	   /* adr of end of mod.	*/
 | |
|   char	        *sbAlias;	   /* alias name of module   	*/
 | |
|   char	        *sbMod;		   /* real name of module	*/
 | |
|   unsigned int   imports:       1; /* module have any imports?  */
 | |
|   unsigned int   vars_in_front: 1; /* module globals in front?  */
 | |
|   unsigned int   vars_in_gaps:  1; /* module globals in gaps?   */
 | |
|   unsigned int   language:      4; /* type of language          */
 | |
|   unsigned int   unused      : 25;
 | |
|   unsigned int   unused2;	   /* space for future stuff	*/
 | |
| } quick_module_entry, *quick_module_entry_ptr;
 | |
| 
 | |
| /*  Auxiliary Procedure Descriptor:
 | |
|     An element of the auxiliary procedure quick look-up table.  */
 | |
| 
 | |
| typedef struct quick_aux_procedure
 | |
| {
 | |
|   long	 isym_inln;	/* start on inline list for proc */
 | |
|   long   spare;
 | |
| } quick_aux_procedure_entry, *quick_aux_procedure_entry_ptr;
 | |
| 
 | |
| /*  Paragraph Descriptor:
 | |
|     An element of the paragraph quick look-up table.  */
 | |
| 
 | |
| typedef struct quick_paragraph
 | |
| {
 | |
|   long             isym;       /* first symbol for label (index)  */
 | |
|   CORE_ADDR        adrStart;   /* memory adr of start of label    */
 | |
|   CORE_ADDR        adrEnd;     /* memory adr of end of label      */
 | |
|   char            *sbLab;      /* name of label                   */
 | |
|   unsigned int     inst;       /* Used in xdb to store inst @ bp  */
 | |
|   unsigned int     sect:    1; /* true = section, false = parag.  */
 | |
|   unsigned int     unused: 31; /* future use                      */
 | |
| } quick_paragraph_entry, *quick_paragraph_entry_ptr;
 | |
| 
 | |
| /* Class Descriptor:
 | |
|    An element of the class quick look-up table.  */
 | |
| 
 | |
| typedef struct quick_class
 | |
| {
 | |
|   char	         *sbClass;	/* name of class	        */
 | |
|   long            isym;         /* class symbol (tag)           */
 | |
|   unsigned int	  type : 2;	/* 0=class, 1=union, 2=struct   */
 | |
|   unsigned int	  fTemplate : 1;/* class template               */
 | |
|   unsigned int	  expansion : 1;/* template expansion           */
 | |
|   unsigned int	  unused    :28;
 | |
|   sltpointer      lowscope;	/* beginning of defined scope   */
 | |
|   sltpointer      hiscope;	/* end of defined scope         */
 | |
| } quick_class_entry, *quick_class_entry_ptr;
 | |
| 
 | |
| /* Address Alias Entry
 | |
|    An element of the address alias quick look-up table.  */
 | |
| 
 | |
| typedef struct quick_alias
 | |
| {
 | |
|   CORE_ADDR     low;
 | |
|   CORE_ADDR     high;
 | |
|   int           index;
 | |
|   unsigned int	unused : 31;
 | |
|   unsigned int	alternate : 1;	/* alternate unnamed aliases?   */
 | |
| } quick_alias_entry, *quick_alias_entry_ptr;
 | |
| 
 | |
| /* Object Identification Entry
 | |
|    An element of the object identification quick look-up table.  */
 | |
| 
 | |
| typedef struct quick_obj_ID
 | |
| {
 | |
|   CORE_ADDR    obj_ident;	/* class identifier         */
 | |
|   long         isym;		/* class symbol             */
 | |
|   long         offset;		/* offset to object start   */
 | |
| } quick_obj_ID_entry, *quick_obj_ID_entry_ptr;
 | |
| 
 | |
| #endif /* HP_SYMTAB_INCLUDED */
 |