hp-symtab.h

基于4个mips核的noc设计

   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 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 the