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authorRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
committerRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
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19990502 sourceware importbinu_ss_19990502
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+/* Definitions and structures for reading debug symbols from the
+ native HP C compiler.
+
+ Written by the Center for Software Science at the University of Utah
+ and by Cygnus Support.
+
+ Copyright 1994 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#ifndef HP_SYMTAB_INCLUDED
+#define HP_SYMTAB_INCLUDED
+
+/* General information:
+
+ This header file defines and describes only the data structures
+ necessary to read debug symbols produced by the HP C compiler,
+ HP ANSI C++ compiler, and HP FORTRAN 90 compiler using the
+ SOM object file format.
+ (For a full description of the debug format, ftp hpux-symtab.h from
+ jaguar.cs.utah.edu:/dist).
+
+ Additional notes (Rich Title)
+ This file is a reverse-engineered version of a file called
+ "symtab.h" which exists internal to HP's Computer Languages Organization
+ in /CLO/Components/DDE/obj/som/symtab.h. Because HP's version of
+ the file is copyrighted and not distributed, it is necessary for
+ GDB to use the reverse-engineered version that follows.
+ Work was done by Cygnus to reverse-engineer the C subset of symtab.h.
+ The WDB project has extended this to also contain the C++
+ symbol definitions, the F90 symbol definitions,
+ and the DOC (debugging-optimized-code) symbol definitions.
+ In some cases (the C++ symbol definitions)
+ I have added internal documentation here that
+ goes beyond what is supplied in HP's symtab.h. If we someday
+ unify these files again, the extra comments should be merged back
+ into HP's symtab.h.
+
+ -------------------------------------------------------------------
+
+ Debug symbols are contained entirely within an unloadable space called
+ $DEBUG$. $DEBUG$ contains several subspaces which group related
+ debug symbols.
+
+ $GNTT$ contains information for global variables, types and contants.
+
+ $LNTT$ contains information for procedures (including nesting), scoping
+ information, local variables, types, and constants.
+
+ $SLT$ contains source line information so that code addresses may be
+ mapped to source lines.
+
+ $VT$ contains various strings and constants for named objects (variables,
+ typedefs, functions, etc). Strings are stored as null-terminated character
+ lists. Constants always begin on word boundaries. The first byte of
+ 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,
+ HP_LANGUAGE_F77,
+ HP_LANGUAGE_PASCAL,
+ HP_LANGUAGE_MODCAL,
+ HP_LANGUAGE_COBOL,
+ HP_LANGUAGE_BASIC,
+ HP_LANGUAGE_ADA,
+ 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 */
+ HP_TYPE_COMPLEX, /* 6 */
+ HP_TYPE_STRING200, /* 7 */
+ 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 */
+ HP_TYPE_GLOBAL_ANYPOINTER, /* 17 */
+ HP_TYPE_LOCAL_ANYPOINTER, /* 18 */
+ HP_TYPE_COMPLEXS3000, /* 19 */
+ HP_TYPE_FTN_STRING_S300_COMPAT, /* 20 */
+ HP_TYPE_FTN_STRING_VAX_COMPAT, /* 21 */
+ HP_TYPE_BOOLEAN_S300_COMPAT, /* 22 */
+ HP_TYPE_BOOLEAN_VAX_COMPAT, /* 23 */
+ HP_TYPE_WIDE_CHAR, /* 24 */
+ HP_TYPE_LONG, /* 25 */
+ 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.
+ 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;
+ unsigned int global: 1;
+ unsigned int type: 5;
+ unsigned int bitlength: 24;
+};
+
+/* 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.
+
+ The nonimmediate form is used for complex entries and contains
+ an index into the LNTT or GNTT which describes the entire type.
+
+ 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;
+ 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;
+
+/* Unsigned byte offset into the VT. */
+typedef unsigned int vtpointer;
+
+/* 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
+ for the first block of a DNTT entry. If the entry requires more
+ than one block, then this bit is set to one in all blocks after
+ the first one. */
+
+/* Each DNTT entry describes a particular debug symbol (beginning of
+ a source file, a function, variables, structures, etc.
+
+ The type of the DNTT entry is stored in the "kind" field within the
+ DNTT entry itself. */
+
+enum dntt_entry_type
+{
+ DNTT_TYPE_NIL = -1,
+ DNTT_TYPE_SRCFILE,
+ DNTT_TYPE_MODULE,
+ DNTT_TYPE_FUNCTION,
+ DNTT_TYPE_ENTRY,
+ DNTT_TYPE_BEGIN,
+ DNTT_TYPE_END,
+ DNTT_TYPE_IMPORT,
+ DNTT_TYPE_LABEL,
+ DNTT_TYPE_FPARAM,
+ DNTT_TYPE_SVAR,
+ DNTT_TYPE_DVAR,
+ DNTT_TYPE_HOLE1,
+ DNTT_TYPE_CONST,
+ DNTT_TYPE_TYPEDEF,
+ DNTT_TYPE_TAGDEF,
+ DNTT_TYPE_POINTER,
+ DNTT_TYPE_ENUM,
+ DNTT_TYPE_MEMENUM,
+ DNTT_TYPE_SET,
+ DNTT_TYPE_SUBRANGE,
+ DNTT_TYPE_ARRAY,
+ DNTT_TYPE_STRUCT,
+ DNTT_TYPE_UNION,
+ DNTT_TYPE_FIELD,
+ DNTT_TYPE_VARIANT,
+ DNTT_TYPE_FILE,
+ DNTT_TYPE_FUNCTYPE,
+ DNTT_TYPE_WITH,
+ DNTT_TYPE_COMMON,
+ DNTT_TYPE_COBSTRUCT,
+ DNTT_TYPE_XREF,
+ DNTT_TYPE_SA,
+ DNTT_TYPE_MACRO,
+ DNTT_TYPE_BLOCKDATA,
+ DNTT_TYPE_CLASS_SCOPE,
+ DNTT_TYPE_REFERENCE,
+ DNTT_TYPE_PTRMEM,
+ DNTT_TYPE_PTRMEMFUNC,
+ DNTT_TYPE_CLASS,
+ DNTT_TYPE_GENFIELD,
+ DNTT_TYPE_VFUNC,
+ DNTT_TYPE_MEMACCESS,
+ DNTT_TYPE_INHERITANCE,
+ DNTT_TYPE_FRIEND_CLASS,
+ DNTT_TYPE_FRIEND_FUNC,
+ DNTT_TYPE_MODIFIER,
+ DNTT_TYPE_OBJECT_ID,
+ DNTT_TYPE_MEMFUNC,
+ DNTT_TYPE_TEMPLATE,
+ DNTT_TYPE_TEMPLATE_ARG,
+ DNTT_TYPE_FUNC_TEMPLATE,
+ DNTT_TYPE_LINK,
+ DNTT_TYPE_DYN_ARRAY_DESC,
+ DNTT_TYPE_DESC_SUBRANGE,
+ DNTT_TYPE_BEGIN_EXT,
+ DNTT_TYPE_INLN,
+ DNTT_TYPE_INLN_LIST,
+ DNTT_TYPE_ALIAS,
+ DNTT_TYPE_DOC_FUNCTION,
+ DNTT_TYPE_DOC_MEMFUNC,
+ DNTT_TYPE_MAX
+};
+
+/* DNTT_TYPE_SRCFILE:
+
+ One DNTT_TYPE_SRCFILE symbol is output for the start of each source
+ 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 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 unused: 16;
+ vtpointer name;
+ int 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: 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 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 0 */
+ 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 */
+