| /* 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 (C) 1994-2021 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 3 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., 51 Franklin Street - Fifth Floor, Boston, |
| MA 02110-1301, 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_FORTRAN, |
| HP_LANGUAGE_F77 = HP_LANGUAGE_FORTRAN, |
| 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 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 */ |
