fix copyrights, add NEWS entry

[binutils.git] / gdb / gdbtypes.c

/* Support routines for manipulating internal types for GDB.
   Copyright (C) 1992, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
   Contributed by Cygnus Support, using pieces from other GDB modules.

This file is part of GDB.

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.  */

#include "defs.h"
#include "gdb_string.h"
#include "bfd.h"
#include "symtab.h"
#include "symfile.h"
#include "objfiles.h"
#include "gdbtypes.h"
#include "expression.h"
#include "language.h"
#include "target.h"
#include "value.h"
#include "demangle.h"
#include "complaints.h"

/* These variables point to the objects
   representing the predefined C data types.  */

struct type *builtin_type_void;
struct type *builtin_type_char;
struct type *builtin_type_short;
struct type *builtin_type_int;
struct type *builtin_type_long;
struct type *builtin_type_long_long;
struct type *builtin_type_signed_char;
struct type *builtin_type_unsigned_char;
struct type *builtin_type_unsigned_short;
struct type *builtin_type_unsigned_int;
struct type *builtin_type_unsigned_long;
struct type *builtin_type_unsigned_long_long;
struct type *builtin_type_float;
struct type *builtin_type_double;
struct type *builtin_type_long_double;
struct type *builtin_type_complex;
struct type *builtin_type_double_complex;
struct type *builtin_type_string;

struct extra { char str[128]; int len; }; /* maximum extention is 128! FIXME */

static void add_name PARAMS ((struct extra *, char *));
static void add_mangled_type PARAMS ((struct extra *, struct type *));
#if 0
static void cfront_mangle_name PARAMS ((struct type *, int, int));
#endif
static void print_bit_vector PARAMS ((B_TYPE *, int));
static void print_arg_types PARAMS ((struct type **, int));
static void dump_fn_fieldlists PARAMS ((struct type *, int));
static void print_cplus_stuff PARAMS ((struct type *, int));

/* Alloc a new type structure and fill it with some defaults.  If
   OBJFILE is non-NULL, then allocate the space for the type structure
   in that objfile's type_obstack. */

struct type *
alloc_type (objfile)
     struct objfile *objfile;
{
  register struct type *type;

  /* Alloc the structure and start off with all fields zeroed. */

  if (objfile == NULL)
    {
      type  = (struct type *) xmalloc (sizeof (struct type));
    }
  else
    {
      type  = (struct type *) obstack_alloc (&objfile -> type_obstack,
                                             sizeof (struct type));
      OBJSTAT (objfile, n_types++);
    }
  memset ((char *) type, 0, sizeof (struct type));

  /* Initialize the fields that might not be zero. */

  TYPE_CODE (type) = TYPE_CODE_UNDEF;
  TYPE_OBJFILE (type) = objfile;
  TYPE_VPTR_FIELDNO (type) = -1;

  return (type);
}

/* Lookup a pointer to a type TYPE.  TYPEPTR, if nonzero, points
   to a pointer to memory where the pointer type should be stored.
   If *TYPEPTR is zero, update it to point to the pointer type we return.
   We allocate new memory if needed.  */

struct type *
make_pointer_type (type, typeptr)
     struct type *type;
     struct type **typeptr;
{
  register struct type *ntype;          /* New type */
  struct objfile *objfile;

  ntype = TYPE_POINTER_TYPE (type);

  if (ntype) 
    if (typeptr == 0)           
      return ntype;     /* Don't care about alloc, and have new type.  */
    else if (*typeptr == 0)
      {
        *typeptr = ntype;       /* Tracking alloc, and we have new type.  */
        return ntype;
      }

  if (typeptr == 0 || *typeptr == 0)    /* We'll need to allocate one.  */
    {
      ntype = alloc_type (TYPE_OBJFILE (type));
      if (typeptr)
        *typeptr = ntype;
    }
  else                          /* We have storage, but need to reset it.  */
    {
      ntype = *typeptr;
      objfile = TYPE_OBJFILE (ntype);
      memset ((char *) ntype, 0, sizeof (struct type));
      TYPE_OBJFILE (ntype) = objfile;
    }

  TYPE_TARGET_TYPE (ntype) = type;
  TYPE_POINTER_TYPE (type) = ntype;

  /* FIXME!  Assume the machine has only one representation for pointers!  */

  TYPE_LENGTH (ntype) = TARGET_PTR_BIT / TARGET_CHAR_BIT;
  TYPE_CODE (ntype) = TYPE_CODE_PTR;

  /* pointers are unsigned */
  TYPE_FLAGS (ntype) |= TYPE_FLAG_UNSIGNED;
  
  if (!TYPE_POINTER_TYPE (type))        /* Remember it, if don't have one.  */
    TYPE_POINTER_TYPE (type) = ntype;

  return ntype;
}

/* Given a type TYPE, return a type of pointers to that type.
   May need to construct such a type if this is the first use.  */

struct type *
lookup_pointer_type (type)
     struct type *type;
{
  return make_pointer_type (type, (struct type **)0);
}

/* Lookup a C++ `reference' to a type TYPE.  TYPEPTR, if nonzero, points
   to a pointer to memory where the reference type should be stored.
   If *TYPEPTR is zero, update it to point to the reference type we return.
   We allocate new memory if needed.  */

struct type *
make_reference_type (type, typeptr)
     struct type *type;
     struct type **typeptr;
{
  register struct type *ntype;          /* New type */
  struct objfile *objfile;

  ntype = TYPE_REFERENCE_TYPE (type);

  if (ntype) 
    if (typeptr == 0)           
      return ntype;     /* Don't care about alloc, and have new type.  */
    else if (*typeptr == 0)
      {
        *typeptr = ntype;       /* Tracking alloc, and we have new type.  */
        return ntype;
      }

  if (typeptr == 0 || *typeptr == 0)    /* We'll need to allocate one.  */
    {
      ntype = alloc_type (TYPE_OBJFILE (type));
      if (typeptr)
        *typeptr = ntype;
    }
  else                          /* We have storage, but need to reset it.  */
    {
      ntype = *typeptr;
      objfile = TYPE_OBJFILE (ntype);
      memset ((char *) ntype, 0, sizeof (struct type));
      TYPE_OBJFILE (ntype) = objfile;
    }

  TYPE_TARGET_TYPE (ntype) = type;
  TYPE_REFERENCE_TYPE (type) = ntype;

  /* FIXME!  Assume the machine has only one representation for references,
     and that it matches the (only) representation for pointers!  */

  TYPE_LENGTH (ntype) = TARGET_PTR_BIT / TARGET_CHAR_BIT;
  TYPE_CODE (ntype) = TYPE_CODE_REF;
  
  if (!TYPE_REFERENCE_TYPE (type))      /* Remember it, if don't have one.  */
    TYPE_REFERENCE_TYPE (type) = ntype;

  return ntype;
}

/* Same as above, but caller doesn't care about memory allocation details.  */

struct type *
lookup_reference_type (type)
     struct type *type;
{
  return make_reference_type (type, (struct type **)0);
}

/* Lookup a function type that returns type TYPE.  TYPEPTR, if nonzero, points
   to a pointer to memory where the function type should be stored.
   If *TYPEPTR is zero, update it to point to the function type we return.
   We allocate new memory if needed.  */

struct type *
make_function_type (type, typeptr)
     struct type *type;
     struct type **typeptr;
{
  register struct type *ntype;          /* New type */
  struct objfile *objfile;

  if (typeptr == 0 || *typeptr == 0)    /* We'll need to allocate one.  */
    {
      ntype = alloc_type (TYPE_OBJFILE (type));
      if (typeptr)
        *typeptr = ntype;
    }
  else                          /* We have storage, but need to reset it.  */
    {
      ntype = *typeptr;
      objfile = TYPE_OBJFILE (ntype);
      memset ((char *) ntype, 0, sizeof (struct type));
      TYPE_OBJFILE (ntype) = objfile;
    }

  TYPE_TARGET_TYPE (ntype) = type;

  TYPE_LENGTH (ntype) = 1;
  TYPE_CODE (ntype) = TYPE_CODE_FUNC;
  
  return ntype;
}


/* Given a type TYPE, return a type of functions that return that type.
   May need to construct such a type if this is the first use.  */

struct type *
lookup_function_type (type)
     struct type *type;
{
  return make_function_type (type, (struct type **)0);
}

/* Implement direct support for MEMBER_TYPE in GNU C++.
   May need to construct such a type if this is the first use.
   The TYPE is the type of the member.  The DOMAIN is the type
   of the aggregate that the member belongs to.  */

struct type *
lookup_member_type (type, domain)
     struct type *type;
     struct type *domain;
{
  register struct type *mtype;

  mtype = alloc_type (TYPE_OBJFILE (type));
  smash_to_member_type (mtype, domain, type);
  return (mtype);
}

/* Allocate a stub method whose return type is TYPE.  
   This apparently happens for speed of symbol reading, since parsing
   out the arguments to the method is cpu-intensive, the way we are doing
   it.  So, we will fill in arguments later.
   This always returns a fresh type.   */

struct type *
allocate_stub_method (type)
     struct type *type;
{
  struct type *mtype;

  mtype = alloc_type (TYPE_OBJFILE (type));
  TYPE_TARGET_TYPE (mtype) = type;
  /*  _DOMAIN_TYPE (mtype) = unknown yet */
  /*  _ARG_TYPES (mtype) = unknown yet */
  TYPE_FLAGS (mtype) = TYPE_FLAG_STUB;
  TYPE_CODE (mtype) = TYPE_CODE_METHOD;
  TYPE_LENGTH (mtype) = 1;
  return (mtype);
}

/* Create a range type using either a blank type supplied in RESULT_TYPE,
   or creating a new type, inheriting the objfile from INDEX_TYPE.

   Indices will be of type INDEX_TYPE, and will range from LOW_BOUND to
   HIGH_BOUND, inclusive.

   FIXME:  Maybe we should check the TYPE_CODE of RESULT_TYPE to make
   sure it is TYPE_CODE_UNDEF before we bash it into a range type? */

struct type *
create_range_type (result_type, index_type, low_bound, high_bound)
     struct type *result_type;
     struct type *index_type;
     int low_bound;
     int high_bound;
{
  if (result_type == NULL)
    {
      result_type = alloc_type (TYPE_OBJFILE (index_type));
    }
  TYPE_CODE (result_type) = TYPE_CODE_RANGE;
  TYPE_TARGET_TYPE (result_type) = index_type;
  if (TYPE_FLAGS (index_type) & TYPE_FLAG_STUB)
    TYPE_FLAGS (result_type) |= TYPE_FLAG_TARGET_STUB;
  else
    TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type));
  TYPE_NFIELDS (result_type) = 2;
  TYPE_FIELDS (result_type) = (struct field *)
    TYPE_ALLOC (result_type, 2 * sizeof (struct field));
  memset (TYPE_FIELDS (result_type), 0, 2 * sizeof (struct field));
  TYPE_FIELD_BITPOS (result_type, 0) = low_bound;
  TYPE_FIELD_BITPOS (result_type, 1) = high_bound;
  TYPE_FIELD_TYPE (result_type, 0) = builtin_type_int;          /* FIXME */
  TYPE_FIELD_TYPE (result_type, 1) = builtin_type_int;          /* FIXME */

  return (result_type);
}

/* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type TYPE.
   Return 1 of type is a range type, 0 if it is discrete (and bounds
   will fit in LONGEST), or -1 otherwise. */

int
get_discrete_bounds (type, lowp, highp)
     struct type *type;
     LONGEST *lowp, *highp;
{
  CHECK_TYPEDEF (type);
  switch (TYPE_CODE (type))
    {
    case TYPE_CODE_RANGE:
      *lowp = TYPE_LOW_BOUND (type);
      *highp = TYPE_HIGH_BOUND (type);
      return 1;
    case TYPE_CODE_ENUM:
      if (TYPE_NFIELDS (type) > 0)
        {
          /* The enums may not be sorted by value, so search all
             entries */
          int i;

          *lowp = *highp = TYPE_FIELD_BITPOS (type, 0);
          for (i = 0; i < TYPE_NFIELDS (type); i++)
            {
              if (TYPE_FIELD_BITPOS (type, i) < *lowp)
                *lowp = TYPE_FIELD_BITPOS (type, i);
              if (TYPE_FIELD_BITPOS (type, i) > *highp)
                *highp = TYPE_FIELD_BITPOS (type, i);
            }
        }
      else
        {
          *lowp = 0;
          *highp = -1;
        }
      return 0;
    case TYPE_CODE_BOOL:
      *lowp = 0;
      *highp = 1;
      return 0;
    case TYPE_CODE_INT:
      if (TYPE_LENGTH (type) > sizeof (LONGEST))  /* Too big */
        return -1;
      if (!TYPE_UNSIGNED (type))
        {
          *lowp = - (1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1));
          *highp = -*lowp - 1;
          return 0;
        }
      /* ... fall through for unsigned ints ... */
    case TYPE_CODE_CHAR:
      *lowp = 0;
      /* This round-about calculation is to avoid shifting by
         TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work
         if TYPE_LENGTH (type) == sizeof (LONGEST). */
      *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1);
      *highp = (*highp - 1) | *highp;
      return 0;
    default:
      return -1;
    }
}

/* Create an array type using either a blank type supplied in RESULT_TYPE,
   or creating a new type, inheriting the objfile from RANGE_TYPE.

   Elements will be of type ELEMENT_TYPE, the indices will be of type
   RANGE_TYPE.

   FIXME:  Maybe we should check the TYPE_CODE of RESULT_TYPE to make
   sure it is TYPE_CODE_UNDEF before we bash it into an array type? */

struct type *
create_array_type (result_type, element_type, range_type)
     struct type *result_type;
     struct type *element_type;
     struct type *range_type;
{
  LONGEST low_bound, high_bound;

  if (result_type == NULL)
    {
      result_type = alloc_type (TYPE_OBJFILE (range_type));
    }
  TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
  TYPE_TARGET_TYPE (result_type) = element_type;
  if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
    low_bound = high_bound = 0;
  CHECK_TYPEDEF (element_type);
  TYPE_LENGTH (result_type) =
    TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
  TYPE_NFIELDS (result_type) = 1;
  TYPE_FIELDS (result_type) =
    (struct field *) TYPE_ALLOC (result_type, sizeof (struct field));
  memset (TYPE_FIELDS (result_type), 0, sizeof (struct field));
  TYPE_FIELD_TYPE (result_type, 0) = range_type;
  TYPE_VPTR_FIELDNO (result_type) = -1;

  /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays */
  if (TYPE_LENGTH (result_type) == 0)
    TYPE_FLAGS (result_type) |= TYPE_FLAG_TARGET_STUB;

  return (result_type);
}

/* Create a string type using either a blank type supplied in RESULT_TYPE,
   or creating a new type.  String types are similar enough to array of
   char types that we can use create_array_type to build the basic type
   and then bash it into a string type.

   For fixed length strings, the range type contains 0 as the lower
   bound and the length of the string minus one as the upper bound.

   FIXME:  Maybe we should check the TYPE_CODE of RESULT_TYPE to make
   sure it is TYPE_CODE_UNDEF before we bash it into a string type? */

struct type *
create_string_type (result_type, range_type)
     struct type *result_type;
     struct type *range_type;
{
  result_type = create_array_type (result_type,
                                   *current_language->string_char_type,
                                   range_type);
  TYPE_CODE (result_type) = TYPE_CODE_STRING;
  return (result_type);
}

struct type *
create_set_type (result_type, domain_type)
     struct type *result_type;
     struct type *domain_type;
{
  LONGEST low_bound, high_bound, bit_length;
  if (result_type == NULL)
    {
      result_type = alloc_type (TYPE_OBJFILE (domain_type));
    }
  TYPE_CODE (result_type) = TYPE_CODE_SET;
  TYPE_NFIELDS (result_type) = 1;
  TYPE_FIELDS (result_type) = (struct field *)
    TYPE_ALLOC (result_type, 1 * sizeof (struct field));
  memset (TYPE_FIELDS (result_type), 0, sizeof (struct field));

  if (! (TYPE_FLAGS (domain_type) & TYPE_FLAG_STUB))
    {
      if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0)
        low_bound = high_bound = 0;
      bit_length = high_bound - low_bound + 1;
      TYPE_LENGTH (result_type)
        = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
    }
  TYPE_FIELD_TYPE (result_type, 0) = domain_type;
  return (result_type);
}

/* Smash TYPE to be a type of members of DOMAIN with type TO_TYPE. 
   A MEMBER is a wierd thing -- it amounts to a typed offset into
   a struct, e.g. "an int at offset 8".  A MEMBER TYPE doesn't
   include the offset (that's the value of the MEMBER itself), but does
   include the structure type into which it points (for some reason).

   When "smashing" the type, we preserve the objfile that the
   old type pointed to, since we aren't changing where the type is actually
   allocated.  */

void
smash_to_member_type (type, domain, to_type)
     struct type *type;
     struct type *domain;
     struct type *to_type;
{
  struct objfile *objfile;

  objfile = TYPE_OBJFILE (type);

  memset ((char *) type, 0, sizeof (struct type));
  TYPE_OBJFILE (type) = objfile;
  TYPE_TARGET_TYPE (type) = to_type;
  TYPE_DOMAIN_TYPE (type) = domain;
  TYPE_LENGTH (type) = 1;       /* In practice, this is never needed.  */
  TYPE_CODE (type) = TYPE_CODE_MEMBER;
}

/* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
   METHOD just means `function that gets an extra "this" argument'.

   When "smashing" the type, we preserve the objfile that the
   old type pointed to, since we aren't changing where the type is actually
   allocated.  */

void
smash_to_method_type (type, domain, to_type, args)
     struct type *type;
     struct type *domain;
     struct type *to_type;
     struct type **args;
{
  struct objfile *objfile;

  objfile = TYPE_OBJFILE (type);

  memset ((char *) type, 0, sizeof (struct type));
  TYPE_OBJFILE (type) = objfile;
  TYPE_TARGET_TYPE (type) = to_type;
  TYPE_DOMAIN_TYPE (type) = domain;
  TYPE_ARG_TYPES (type) = args;
  TYPE_LENGTH (type) = 1;       /* In practice, this is never needed.  */
  TYPE_CODE (type) = TYPE_CODE_METHOD;
}

/* Return a typename for a struct/union/enum type without "struct ",
   "union ", or "enum ".  If the type has a NULL name, return NULL.  */

char *
type_name_no_tag (type)
     register const struct type *type;
{
  if (TYPE_TAG_NAME (type) != NULL)
    return TYPE_TAG_NAME (type);

  /* Is there code which expects this to return the name if there is no
     tag name?  My guess is that this is mainly used for C++ in cases where
     the two will always be the same.  */
  return TYPE_NAME (type);
}

/* Lookup a primitive type named NAME. 
   Return zero if NAME is not a primitive type.*/

struct type *
lookup_primitive_typename (name)
     char *name;
{
   struct type ** const *p;

   for (p = current_language -> la_builtin_type_vector; *p != NULL; p++)
     {
       if (STREQ ((**p) -> name, name))
         {
           return (**p);
         }
     }
   return (NULL); 
}

/* Lookup a typedef or primitive type named NAME,
   visible in lexical block BLOCK.
   If NOERR is nonzero, return zero if NAME is not suitably defined.  */

struct type *
lookup_typename (name, block, noerr)
     char *name;
     struct block *block;
     int noerr;
{
  register struct symbol *sym;
  register struct type *tmp;

  sym = lookup_symbol (name, block, VAR_NAMESPACE, 0, (struct symtab **) NULL);
  if (sym == NULL || SYMBOL_CLASS (sym) != LOC_TYPEDEF)
    {
      tmp = lookup_primitive_typename (name);
      if (tmp)
        {
          return (tmp);
        }
      else if (!tmp && noerr)
        {
          return (NULL);
        }
      else
        {
          error ("No type named %s.", name);
        }
    }
  return (SYMBOL_TYPE (sym));
}

struct type *
lookup_unsigned_typename (name)
     char *name;
{
  char *uns = alloca (strlen (name) + 10);

  strcpy (uns, "unsigned ");
  strcpy (uns + 9, name);
  return (lookup_typename (uns, (struct block *) NULL, 0));
}

struct type *
lookup_signed_typename (name)
     char *name;
{
  struct type *t;
  char *uns = alloca (strlen (name) + 8);

  strcpy (uns, "signed ");
  strcpy (uns + 7, name);
  t = lookup_typename (uns, (struct block *) NULL, 1);
  /* If we don't find "signed FOO" just try again with plain "FOO". */
  if (t != NULL)
    return t;
  return lookup_typename (name, (struct block *) NULL, 0);
}

/* Lookup a structure type named "struct NAME",
   visible in lexical block BLOCK.  */

struct type *
lookup_struct (name, block)
     char *name;
     struct block *block;
{
  register struct symbol *sym;

  sym = lookup_symbol (name, block, STRUCT_NAMESPACE, 0,
                       (struct symtab **) NULL);

  if (sym == NULL)
    {
      error ("No struct type named %s.", name);
    }
  if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
    {
      error ("This context has class, union or enum %s, not a struct.", name);
    }
  return (SYMBOL_TYPE (sym));
}

/* Lookup a union type named "union NAME",
   visible in lexical block BLOCK.  */

struct type *
lookup_union (name, block)
     char *name;
     struct block *block;
{
  register struct symbol *sym;

  sym = lookup_symbol (name, block, STRUCT_NAMESPACE, 0,
                       (struct symtab **) NULL);

  if (sym == NULL)
    {
      error ("No union type named %s.", name);
    }
  if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_UNION)
    {
      error ("This context has class, struct or enum %s, not a union.", name);
    }
  return (SYMBOL_TYPE (sym));
}

/* Lookup an enum type named "enum NAME",
   visible in lexical block BLOCK.  */

struct type *
lookup_enum (name, block)
     char *name;
     struct block *block;
{
  register struct symbol *sym;

  sym = lookup_symbol (name, block, STRUCT_NAMESPACE, 0, 
                       (struct symtab **) NULL);
  if (sym == NULL)
    {
      error ("No enum type named %s.", name);
    }
  if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
    {
      error ("This context has class, struct or union %s, not an enum.", name);
    }
  return (SYMBOL_TYPE (sym));
}

/* Lookup a template type named "template NAME<TYPE>",
   visible in lexical block BLOCK.  */

struct type *
lookup_template_type (name, type, block)
     char *name;
     struct type *type;
     struct block *block;
{
  struct symbol *sym;
  char *nam = (char*) alloca(strlen(name) + strlen(type->name) + 4);
  strcpy (nam, name);
  strcat (nam, "<");
  strcat (nam, type->name);
  strcat (nam, " >");   /* FIXME, extra space still introduced in gcc? */

  sym = lookup_symbol (nam, block, VAR_NAMESPACE, 0, (struct symtab **)NULL);

  if (sym == NULL)
    {
      error ("No template type named %s.", name);
    }
  if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
    {
      error ("This context has class, union or enum %s, not a struct.", name);
    }
  return (SYMBOL_TYPE (sym));
}

/* Given a type TYPE, lookup the type of the component of type named NAME.  

   TYPE can be either a struct or union, or a pointer or reference to a struct or
   union.  If it is a pointer or reference, its target type is automatically used.
   Thus '.' and '->' are interchangable, as specified for the definitions of the
   expression element types STRUCTOP_STRUCT and STRUCTOP_PTR.

   If NOERR is nonzero, return zero if NAME is not suitably defined.
   If NAME is the name of a baseclass type, return that type.  */

struct type *
lookup_struct_elt_type (type, name, noerr)
     struct type *type;
     char *name;
    int noerr;
{
  int i;

  for (;;)
    {
      CHECK_TYPEDEF (type);
      if (TYPE_CODE (type) != TYPE_CODE_PTR
          && TYPE_CODE (type) != TYPE_CODE_REF)
        break;
      type = TYPE_TARGET_TYPE (type);
    }

  if (TYPE_CODE (type) != TYPE_CODE_STRUCT &&
      TYPE_CODE (type) != TYPE_CODE_UNION)
    {
      target_terminal_ours ();
      gdb_flush (gdb_stdout);
      fprintf_unfiltered (gdb_stderr, "Type ");
      type_print (type, "", gdb_stderr, -1);
      error (" is not a structure or union type.");
    }

#if 0
  /* FIXME:  This change put in by Michael seems incorrect for the case where
     the structure tag name is the same as the member name.  I.E. when doing
     "ptype bell->bar" for "struct foo { int bar; int foo; } bell;"
     Disabled by fnf. */
  {
    char *typename;

    typename = type_name_no_tag (type);
    if (typename != NULL && STREQ (typename, name))
      return type;
  }
#endif

  for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
    {
      char *t_field_name = TYPE_FIELD_NAME (type, i);

      if (t_field_name && STREQ (t_field_name, name))
        {
          return TYPE_FIELD_TYPE (type, i);
        }
    }

  /* OK, it's not in this class.  Recursively check the baseclasses.  */
  for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
    {
      struct type *t;

      t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, noerr);
      if (t != NULL)
        {
          return t;
        }
    }

  if (noerr)
    {
      return NULL;
    }
  
  target_terminal_ours ();
  gdb_flush (gdb_stdout);
  fprintf_unfiltered (gdb_stderr, "Type ");
  type_print (type, "", gdb_stderr, -1);
  fprintf_unfiltered (gdb_stderr, " has no component named ");
  fputs_filtered (name, gdb_stderr);
  error (".");
  return (struct type *)-1;     /* For lint */
}

/* If possible, make the vptr_fieldno and vptr_basetype fields of TYPE
   valid.  Callers should be aware that in some cases (for example,
   the type or one of its baseclasses is a stub type and we are
   debugging a .o file), this function will not be able to find the virtual
   function table pointer, and vptr_fieldno will remain -1 and vptr_basetype
   will remain NULL.  */

void
fill_in_vptr_fieldno (type)
     struct type *type;
{
  CHECK_TYPEDEF (type);

  if (TYPE_VPTR_FIELDNO (type) < 0)
    {
      int i;

      /* We must start at zero in case the first (and only) baseclass is
         virtual (and hence we cannot share the table pointer).  */
      for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
        {
          fill_in_vptr_fieldno (TYPE_BASECLASS (type, i));
          if (TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type, i)) >= 0)
            {
              TYPE_VPTR_FIELDNO (type)
                = TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type, i));
              TYPE_VPTR_BASETYPE (type)
                = TYPE_VPTR_BASETYPE (TYPE_BASECLASS (type, i));
              break;
            }
        }
    }
}

/* Find the method and field indices for the destructor in class type T.
   Return 1 if the destructor was found, otherwise, return 0.  */

int
get_destructor_fn_field (t, method_indexp, field_indexp)
     struct type *t;
     int *method_indexp;
     int *field_indexp;
{
  int i;

  for (i = 0; i < TYPE_NFN_FIELDS (t); i++)
    {
      int j;
      struct fn_field *f = TYPE_FN_FIELDLIST1 (t, i);

      for (j = 0; j < TYPE_FN_FIELDLIST_LENGTH (t, i); j++)
        {
          if (DESTRUCTOR_PREFIX_P (TYPE_FN_FIELD_PHYSNAME (f, j)))
            {
              *method_indexp = i;
              *field_indexp = j;
              return 1;
            }
        }
    }
  return 0;
}

/* Added by Bryan Boreham, Kewill, Sun Sep 17 18:07:17 1989.

   If this is a stubbed struct (i.e. declared as struct foo *), see if
   we can find a full definition in some other file. If so, copy this
   definition, so we can use it in future.  There used to be a comment (but
   not any code) that if we don't find a full definition, we'd set a flag
   so we don't spend time in the future checking the same type.  That would
   be a mistake, though--we might load in more symbols which contain a
   full definition for the type.

   This used to be coded as a macro, but I don't think it is called 
   often enough to merit such treatment.  */

struct complaint stub_noname_complaint =
  {"stub type has NULL name", 0, 0};

struct type *
check_typedef (type)
     register struct type *type;
{
  struct type *orig_type = type;
  while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
    {
      if (!TYPE_TARGET_TYPE (type))
        {
          char* name;
          struct symbol *sym;

          /* It is dangerous to call lookup_symbol if we are currently
             reading a symtab.  Infinite recursion is one danger. */
          if (currently_reading_symtab)
            return type;

          name = type_name_no_tag (type);
          /* FIXME: shouldn't we separately check the TYPE_NAME and the
             TYPE_TAG_NAME, and look in STRUCT_NAMESPACE and/or VAR_NAMESPACE
             as appropriate?  (this code was written before TYPE_NAME and
             TYPE_TAG_NAME were separate).  */
          if (name == NULL)
            {
              complain (&stub_noname_complaint);
              return type;
            }
          sym = lookup_symbol (name, 0, STRUCT_NAMESPACE, 0, 
                               (struct symtab **) NULL);
          if (sym)
            TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym);
          else
            TYPE_TARGET_TYPE (type) = alloc_type (NULL);  /* TYPE_CODE_UNDEF */
        }
      type = TYPE_TARGET_TYPE (type);
    }

  if ((TYPE_FLAGS(type) & TYPE_FLAG_STUB) && ! currently_reading_symtab)
    {
      char* name = type_name_no_tag (type);
      /* FIXME: shouldn't we separately check the TYPE_NAME and the
         TYPE_TAG_NAME, and look in STRUCT_NAMESPACE and/or VAR_NAMESPACE
         as appropriate?  (this code was written before TYPE_NAME and
         TYPE_TAG_NAME were separate).  */
      struct symbol *sym;
      if (name == NULL)
        {
          complain (&stub_noname_complaint);
          return type;
        }
      sym = lookup_symbol (name, 0, STRUCT_NAMESPACE, 0, 
                           (struct symtab **) NULL);
      if (sym)
        {
          memcpy ((char *)type,
                  (char *)SYMBOL_TYPE(sym),
                  sizeof (struct type));
        }
    }

  if (TYPE_FLAGS (type) & TYPE_FLAG_TARGET_STUB)
    {
      struct type *range_type;
      struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));

      if (TYPE_FLAGS (target_type) & TYPE_FLAG_STUB)
        { }
      else if (TYPE_CODE (type) == TYPE_CODE_ARRAY
               && TYPE_NFIELDS (type) == 1
               && (TYPE_CODE (range_type = TYPE_FIELD_TYPE (type, 0))
                   == TYPE_CODE_RANGE))
        {
          /* Now recompute the length of the array type, based on its
             number of elements and the target type's length.  */
          TYPE_LENGTH (type) =
            ((TYPE_FIELD_BITPOS (range_type, 1)
              - TYPE_FIELD_BITPOS (range_type, 0)
              + 1)
             * TYPE_LENGTH (target_type));
          TYPE_FLAGS (type) &= ~TYPE_FLAG_TARGET_STUB;
        }
      else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
        {
          TYPE_LENGTH (type) = TYPE_LENGTH (target_type);
          TYPE_FLAGS (type) &= ~TYPE_FLAG_TARGET_STUB;
        }
    }
  /* Cache TYPE_LENGTH for future use. */
  TYPE_LENGTH (orig_type) = TYPE_LENGTH (type);
  return type;
}

/* New code added to support parsing of Cfront stabs strings */
#include <ctype.h>
#define INIT_EXTRA { pextras->len=0; pextras->str[0]='\0'; }
#define ADD_EXTRA(c) { pextras->str[pextras->len++]=c; }

static void 
add_name(pextras,n) 
  struct extra * pextras;
  char * n; 
{
  int nlen;

  if ((nlen = (n ? strlen(n) : 0))==0) 
    return;
  sprintf(pextras->str+pextras->len,"%d%s",nlen,n);
  pextras->len=strlen(pextras->str);
}

static void 
add_mangled_type(pextras,t) 
  struct extra * pextras;
  struct type * t;
{
  enum type_code tcode;
  int tlen, tflags;
  char * tname;

  tcode = TYPE_CODE(t);
  tlen = TYPE_LENGTH(t);
  tflags = TYPE_FLAGS(t);
  tname = TYPE_NAME(t);
  /* args of "..." seem to get mangled as "e" */

  switch (tcode) 
    {
      case TYPE_CODE_INT: 
        if (tflags==1)
          ADD_EXTRA('U');
        switch (tlen) 
          {
            case 1:
              ADD_EXTRA('c');
              break;
            case 2:
              ADD_EXTRA('s');
              break;
            case 4: 
              {
              char* pname;
              if ((pname=strrchr(tname,'l'),pname) && !strcmp(pname,"long"))
                ADD_EXTRA('l')
              else
                ADD_EXTRA('i')
              }
              break;
            default: 
              {
          
                static struct complaint msg = {"Bad int type code length x%x\n",0,0};
          
                complain (&msg, tlen);
          
              }
          }
        break;
      case TYPE_CODE_FLT: 
          switch (tlen) 
            {
              case 4:
                ADD_EXTRA('f');
                break;
              case 8:
                ADD_EXTRA('d');
                break;
              case 16:
                ADD_EXTRA('r');
                break;
              default: 
                {
                  static struct complaint msg = {"Bad float type code length x%x\n",0,0};
                  complain (&msg, tlen);
                }
              }
            break;
      case TYPE_CODE_REF:
        ADD_EXTRA('R');
        /* followed by what it's a ref to */
        break;
      case TYPE_CODE_PTR:
        ADD_EXTRA('P');
        /* followed by what it's a ptr to */
        break;
      case TYPE_CODE_TYPEDEF: 
        {
          static struct complaint msg = {"Typedefs in overloaded functions not yet supported\n",0,0};
          complain (&msg);
        }
      /* followed by type bytes & name */
      break;
    case TYPE_CODE_FUNC:
      ADD_EXTRA('F');
      /* followed by func's arg '_' & ret types */
      break;
    case TYPE_CODE_VOID:
      ADD_EXTRA('v');
      break;
    case TYPE_CODE_METHOD:
      ADD_EXTRA('M');
      /* followed by name of class and func's arg '_' & ret types */
      add_name(pextras,tname);
      ADD_EXTRA('F');  /* then mangle function */
      break;
    case TYPE_CODE_STRUCT: /* C struct */
    case TYPE_CODE_UNION:  /* C union */
    case TYPE_CODE_ENUM:   /* Enumeration type */
      /* followed by name of type */
      add_name(pextras,tname);
      break;

    /* errors possible types/not supported */
    case TYPE_CODE_CHAR:              
    case TYPE_CODE_ARRAY:  /* Array type */
    case TYPE_CODE_MEMBER: /* Member type */
    case TYPE_CODE_BOOL:
    case TYPE_CODE_COMPLEX:            /* Complex float */
    case TYPE_CODE_UNDEF:
    case TYPE_CODE_SET:                /* Pascal sets */
    case TYPE_CODE_RANGE:  
    case TYPE_CODE_STRING:
    case TYPE_CODE_BITSTRING:
    case TYPE_CODE_ERROR:
    default: 
      {
        static struct complaint msg = {"Unknown type code x%x\n",0,0};
        complain (&msg, tcode);
      }
    }
  if (t->target_type)
    add_mangled_type(pextras,t->target_type);
}

#if 0
void
cfront_mangle_name(type, i, j)
     struct type *type;
     int i;
     int j;
{
   struct fn_field *f;
   char *mangled_name = gdb_mangle_name (type, i, j);

   f = TYPE_FN_FIELDLIST1 (type, i);    /* moved from below */

   /* kludge to support cfront methods - gdb expects to find "F" for 
      ARM_mangled names, so when we mangle, we have to add it here */
   if (ARM_DEMANGLING) 
     {
        int k;
        char * arm_mangled_name;
        struct fn_field *method = &f[j];
        char *field_name = TYPE_FN_FIELDLIST_NAME (type, i);
        char *physname = TYPE_FN_FIELD_PHYSNAME (f, j);
        char *newname = type_name_no_tag (type);

        struct type *ftype = TYPE_FN_FIELD_TYPE (f, j);
        int nargs = TYPE_NFIELDS(ftype);        /* number of args */
        struct extra extras, * pextras = &extras;       
        INIT_EXTRA

        if (TYPE_FN_FIELD_STATIC_P (f, j))      /* j for sublist within this list */
          ADD_EXTRA('S')
        ADD_EXTRA('F')
        /* add args here! */
        if (nargs <= 1)                         /* no args besides this */
                ADD_EXTRA('v')
        else {
          for (k=1; k<nargs; k++) 
            {
              struct type * t;
              t = TYPE_FIELD_TYPE(ftype,k);
              add_mangled_type(pextras,t);
            }
        }
        ADD_EXTRA('\0')
        printf("add_mangled_type: %s\n",extras.str); /* FIXME */
        arm_mangled_name = malloc(strlen(mangled_name)+extras.len);
        sprintf(arm_mangled_name,"%s%s",mangled_name,extras.str);
        free(mangled_name);
        mangled_name = arm_mangled_name;
     }
}
#endif  /* 0 */

#undef ADD_EXTRA
/* End of new code added to support parsing of Cfront stabs strings */

/* Ugly hack to convert method stubs into method types.

   He ain't kiddin'.  This demangles the name of the method into a string
   including argument types, parses out each argument type, generates
   a string casting a zero to that type, evaluates the string, and stuffs
   the resulting type into an argtype vector!!!  Then it knows the type
   of the whole function (including argument types for overloading),
   which info used to be in the stab's but was removed to hack back
   the space required for them.  */

void
check_stub_method (type, i, j)
     struct type *type;
     int i;
     int j;
{
  struct fn_field *f;
  char *mangled_name = gdb_mangle_name (type, i, j);
  char *demangled_name = cplus_demangle (mangled_name,
                                         DMGL_PARAMS | DMGL_ANSI);
  char *argtypetext, *p;
  int depth = 0, argcount = 1;
  struct type **argtypes;
  struct type *mtype;

  /* Make sure we got back a function string that we can use.  */
  if (demangled_name)
    p = strchr (demangled_name, '(');

  if (demangled_name == NULL || p == NULL)
    error ("Internal: Cannot demangle mangled name `%s'.", mangled_name);

  /* Now, read in the parameters that define this type.  */
  p += 1;
  argtypetext = p;
  while (*p)
    {
      if (*p == '(')
        {
          depth += 1;
        }
      else if (*p == ')')
        {
          depth -= 1;
        }
      else if (*p == ',' && depth == 0)
        {
          argcount += 1;
        }

      p += 1;
    }

  /* We need two more slots: one for the THIS pointer, and one for the
     NULL [...] or void [end of arglist].  */

  argtypes = (struct type **)
    TYPE_ALLOC (type, (argcount + 2) * sizeof (struct type *));
  p = argtypetext;
  /* FIXME: This is wrong for static member functions.  */
  argtypes[0] = lookup_pointer_type (type);
  argcount = 1;

  if (*p != ')')                        /* () means no args, skip while */
    {
      depth = 0;
      while (*p)
        {
          if (depth <= 0 && (*p == ',' || *p == ')'))
            {
              /* Avoid parsing of ellipsis, they will be handled below.  */
              if (strncmp (argtypetext, "...", p - argtypetext) != 0)
                {
                  argtypes[argcount] =
                      parse_and_eval_type (argtypetext, p - argtypetext);
                  argcount += 1;
                }
              argtypetext = p + 1;
            }

          if (*p == '(')
            {
              depth += 1;
            }
          else if (*p == ')')
            {
              depth -= 1;
            }

          p += 1;
        }
    }

  if (p[-2] != '.')                     /* Not '...' */
    {
      argtypes[argcount] = builtin_type_void;   /* List terminator */
    }
  else
    {
      argtypes[argcount] = NULL;                /* Ellist terminator */
    }

  free (demangled_name);

  f = TYPE_FN_FIELDLIST1 (type, i);     

  TYPE_FN_FIELD_PHYSNAME (f, j) = mangled_name;

  /* Now update the old "stub" type into a real type.  */
  mtype = TYPE_FN_FIELD_TYPE (f, j);
  TYPE_DOMAIN_TYPE (mtype) = type;
  TYPE_ARG_TYPES (mtype) = argtypes;
  TYPE_FLAGS (mtype) &= ~TYPE_FLAG_STUB;
  TYPE_FN_FIELD_STUB (f, j) = 0;
}

const struct cplus_struct_type cplus_struct_default;

void
allocate_cplus_struct_type (type)
     struct type *type;
{
  if (!HAVE_CPLUS_STRUCT (type))
    {
      TYPE_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
        TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
      *(TYPE_CPLUS_SPECIFIC(type)) = cplus_struct_default;
    }
}

/* Helper function to initialize the standard scalar types.

   If NAME is non-NULL and OBJFILE is non-NULL, then we make a copy
   of the string pointed to by name in the type_obstack for that objfile,
   and initialize the type name to that copy.  There are places (mipsread.c
   in particular, where init_type is called with a NULL value for NAME). */

struct type *
init_type (code, length, flags, name, objfile)
     enum type_code code;
     int length;
     int flags;
     char *name;
     struct objfile *objfile;
{
  register struct type *type;

  type = alloc_type (objfile);
  TYPE_CODE (type) = code;
  TYPE_LENGTH (type) = length;
  TYPE_FLAGS (type) |= flags;
  if ((name != NULL) && (objfile != NULL))
    {
      TYPE_NAME (type) =
        obsavestring (name, strlen (name), &objfile -> type_obstack);
    }
  else
    {
      TYPE_NAME (type) = name;
    }

  /* C++ fancies.  */

  if (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION)
    {
      INIT_CPLUS_SPECIFIC (type);
    }
  return (type);
}

/* Look up a fundamental type for the specified objfile.
   May need to construct such a type if this is the first use.

   Some object file formats (ELF, COFF, etc) do not define fundamental
   types such as "int" or "double".  Others (stabs for example), do
   define fundamental types.

   For the formats which don't provide fundamental types, gdb can create
   such types, using defaults reasonable for the current language and
   the current target machine.

   NOTE:  This routine is obsolescent.  Each debugging format reader
   should manage it's own fundamental types, either creating them from
   suitable defaults or reading them from the debugging information,
   whichever is appropriate.  The DWARF reader has already been
   fixed to do this.  Once the other readers are fixed, this routine
   will go away.  Also note that fundamental types should be managed
   on a compilation unit basis in a multi-language environment, not
   on a linkage unit basis as is done here. */


struct type *
lookup_fundamental_type (objfile, typeid)
     struct objfile *objfile;
     int typeid;
{
  register struct type **typep;
  register int nbytes;

  if (typeid < 0 || typeid >= FT_NUM_MEMBERS)
    {
      error ("internal error - invalid fundamental type id %d", typeid);
    }

  /* If this is the first time we need a fundamental type for this objfile
     then we need to initialize the vector of type pointers. */
  
  if (objfile -> fundamental_types == NULL)
    {
      nbytes = FT_NUM_MEMBERS * sizeof (struct type *);
      objfile -> fundamental_types = (struct type **)
        obstack_alloc (&objfile -> type_obstack, nbytes);
      memset ((char *) objfile -> fundamental_types, 0, nbytes);
      OBJSTAT (objfile, n_types += FT_NUM_MEMBERS);
    }

  /* Look for this particular type in the fundamental type vector.  If one is
     not found, create and install one appropriate for the current language. */

  typep = objfile -> fundamental_types + typeid;
  if (*typep == NULL)
    {
      *typep = create_fundamental_type (objfile, typeid);
    }

  return (*typep);
}

int
can_dereference (t)
     struct type *t;
{
  /* FIXME: Should we return true for references as well as pointers?  */
  CHECK_TYPEDEF (t);
  return
    (t != NULL
     && TYPE_CODE (t) == TYPE_CODE_PTR
     && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID);
}

/* Chill varying string and arrays are represented as follows:

   struct { int __var_length; ELEMENT_TYPE[MAX_SIZE] __var_data};

   Return true if TYPE is such a Chill varying type. */

int
chill_varying_type (type)
     struct type *type;
{
  if (TYPE_CODE (type) != TYPE_CODE_STRUCT
      || TYPE_NFIELDS (type) != 2
      || strcmp (TYPE_FIELD_NAME (type, 0), "__var_length") != 0)
    return 0;
  return 1;
}

#if MAINTENANCE_CMDS

static void
print_bit_vector (bits, nbits)
     B_TYPE *bits;
     int nbits;
{
  int bitno;

  for (bitno = 0; bitno < nbits; bitno++)
    {
      if ((bitno % 8) == 0)
        {
          puts_filtered (" ");
        }
      if (B_TST (bits, bitno))
        {
          printf_filtered ("1");
        }
      else
        {
          printf_filtered ("0");
        }
    }
}

/* The args list is a strange beast.  It is either terminated by a NULL
   pointer for varargs functions, or by a pointer to a TYPE_CODE_VOID
   type for normal fixed argcount functions.  (FIXME someday)
   Also note the first arg should be the "this" pointer, we may not want to
   include it since we may get into a infinitely recursive situation. */

static void
print_arg_types (args, spaces)
     struct type **args;
     int spaces;
{
  if (args != NULL)
    {
      while (*args != NULL)
        {
          recursive_dump_type (*args, spaces + 2);
          if ((*args++) -> code == TYPE_CODE_VOID)
            {
              break;
            }
        }
    }
}

static void
dump_fn_fieldlists (type, spaces)
     struct type *type;
     int spaces;
{
  int method_idx;
  int overload_idx;
  struct fn_field *f;

  printfi_filtered (spaces, "fn_fieldlists ");
  gdb_print_address (TYPE_FN_FIELDLISTS (type), gdb_stdout);
  printf_filtered ("\n");
  for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
    {
      f = TYPE_FN_FIELDLIST1 (type, method_idx);
      printfi_filtered (spaces + 2, "[%d] name '%s' (",
                        method_idx,
                        TYPE_FN_FIELDLIST_NAME (type, method_idx));
      gdb_print_address (TYPE_FN_FIELDLIST_NAME (type, method_idx),
                         gdb_stdout);
      printf_filtered (") length %d\n",
                       TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
      for (overload_idx = 0;
           overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
           overload_idx++)
        {
          printfi_filtered (spaces + 4, "[%d] physname '%s' (",
                            overload_idx,
                            TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
          gdb_print_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
                             gdb_stdout);
          printf_filtered (")\n");
          printfi_filtered (spaces + 8, "type ");
          gdb_print_address (TYPE_FN_FIELD_TYPE (f, overload_idx), gdb_stdout);
          printf_filtered ("\n");

          recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
                               spaces + 8 + 2);

          printfi_filtered (spaces + 8, "args ");
          gdb_print_address (TYPE_FN_FIELD_ARGS (f, overload_idx), gdb_stdout);
          printf_filtered ("\n");

          print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx), spaces);
          printfi_filtered (spaces + 8, "fcontext ");
          gdb_print_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx),
                             gdb_stdout);
          printf_filtered ("\n");

          printfi_filtered (spaces + 8, "is_const %d\n",
                            TYPE_FN_FIELD_CONST (f, overload_idx));
          printfi_filtered (spaces + 8, "is_volatile %d\n",
                            TYPE_FN_FIELD_VOLATILE (f, overload_idx));
          printfi_filtered (spaces + 8, "is_private %d\n",
                            TYPE_FN_FIELD_PRIVATE (f, overload_idx));
          printfi_filtered (spaces + 8, "is_protected %d\n",
                            TYPE_FN_FIELD_PROTECTED (f, overload_idx));
          printfi_filtered (spaces + 8, "is_stub %d\n",
                            TYPE_FN_FIELD_STUB (f, overload_idx));
          printfi_filtered (spaces + 8, "voffset %u\n",
                            TYPE_FN_FIELD_VOFFSET (f, overload_idx));
        }
    }
}

static void
print_cplus_stuff (type, spaces)
     struct type *type;
     int spaces;
{
  printfi_filtered (spaces, "n_baseclasses %d\n",
                    TYPE_N_BASECLASSES (type));
  printfi_filtered (spaces, "nfn_fields %d\n",
                    TYPE_NFN_FIELDS (type));
  printfi_filtered (spaces, "nfn_fields_total %d\n",
                    TYPE_NFN_FIELDS_TOTAL (type));
  if (TYPE_N_BASECLASSES (type) > 0)
    {
      printfi_filtered (spaces, "virtual_field_bits (%d bits at *",
                        TYPE_N_BASECLASSES (type));
      gdb_print_address (TYPE_FIELD_VIRTUAL_BITS (type), gdb_stdout);
      printf_filtered (")");

      print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
                        TYPE_N_BASECLASSES (type));
      puts_filtered ("\n");
    }
  if (TYPE_NFIELDS (type) > 0)
    {
      if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
        {
          printfi_filtered (spaces, "private_field_bits (%d bits at *",
                            TYPE_NFIELDS (type));
          gdb_print_address (TYPE_FIELD_PRIVATE_BITS (type), gdb_stdout);
          printf_filtered (")");
          print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
                            TYPE_NFIELDS (type));
          puts_filtered ("\n");
        }
      if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
        {
          printfi_filtered (spaces, "protected_field_bits (%d bits at *",
                            TYPE_NFIELDS (type));
          gdb_print_address (TYPE_FIELD_PROTECTED_BITS (type), gdb_stdout);
          printf_filtered (")");
          print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
                            TYPE_NFIELDS (type));
          puts_filtered ("\n");
        }
    }
  if (TYPE_NFN_FIELDS (type) > 0)
    {
      dump_fn_fieldlists (type, spaces);
    }
}

static struct obstack dont_print_type_obstack;

void
recursive_dump_type (type, spaces)
     struct type *type;
     int spaces;
{
  int idx;

  if (spaces == 0)
    obstack_begin (&dont_print_type_obstack, 0);

  if (TYPE_NFIELDS (type) > 0
      || (TYPE_CPLUS_SPECIFIC (type) && TYPE_NFN_FIELDS (type) > 0))
    {
      struct type **first_dont_print
        = (struct type **)obstack_base (&dont_print_type_obstack);

      int i = (struct type **)obstack_next_free (&dont_print_type_obstack)
        - first_dont_print;

      while (--i >= 0)
        {
          if (type == first_dont_print[i])
            {
              printfi_filtered (spaces, "type node ");
              gdb_print_address (type, gdb_stdout);
              printf_filtered (" <same as already seen type>\n");
              return;
            }
        }

      obstack_ptr_grow (&dont_print_type_obstack, type);
    }

  printfi_filtered (spaces, "type node ");
  gdb_print_address (type, gdb_stdout);
  printf_filtered ("\n");
  printfi_filtered (spaces, "name '%s' (",
                    TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
  gdb_print_address (TYPE_NAME (type), gdb_stdout);
  printf_filtered (")\n");
  if (TYPE_TAG_NAME (type) != NULL)
    {
      printfi_filtered (spaces, "tagname '%s' (",
                        TYPE_TAG_NAME (type));
      gdb_print_address (TYPE_TAG_NAME (type), gdb_stdout);
      printf_filtered (")\n");
    }
  printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
  switch (TYPE_CODE (type))
    {
      case TYPE_CODE_UNDEF:
        printf_filtered ("(TYPE_CODE_UNDEF)");
        break;
      case TYPE_CODE_PTR:
        printf_filtered ("(TYPE_CODE_PTR)");
        break;
      case TYPE_CODE_ARRAY:
        printf_filtered ("(TYPE_CODE_ARRAY)");
        break;
      case TYPE_CODE_STRUCT:
        printf_filtered ("(TYPE_CODE_STRUCT)");
        break;
      case TYPE_CODE_UNION:
        printf_filtered ("(TYPE_CODE_UNION)");
        break;
      case TYPE_CODE_ENUM:
        printf_filtered ("(TYPE_CODE_ENUM)");
        break;
      case TYPE_CODE_FUNC:
        printf_filtered ("(TYPE_CODE_FUNC)");
        break;
      case TYPE_CODE_INT:
        printf_filtered ("(TYPE_CODE_INT)");
        break;
      case TYPE_CODE_FLT:
        printf_filtered ("(TYPE_CODE_FLT)");
        break;
      case TYPE_CODE_VOID:
        printf_filtered ("(TYPE_CODE_VOID)");
        break;
      case TYPE_CODE_SET:
        printf_filtered ("(TYPE_CODE_SET)");
        break;
      case TYPE_CODE_RANGE:
        printf_filtered ("(TYPE_CODE_RANGE)");
        break;
      case TYPE_CODE_STRING:
        printf_filtered ("(TYPE_CODE_STRING)");
        break;
      case TYPE_CODE_ERROR:
        printf_filtered ("(TYPE_CODE_ERROR)");
        break;
      case TYPE_CODE_MEMBER:
        printf_filtered ("(TYPE_CODE_MEMBER)");
        break;
      case TYPE_CODE_METHOD:
        printf_filtered ("(TYPE_CODE_METHOD)");
        break;
      case TYPE_CODE_REF:
        printf_filtered ("(TYPE_CODE_REF)");
        break;
      case TYPE_CODE_CHAR:
        printf_filtered ("(TYPE_CODE_CHAR)");
        break;
      case TYPE_CODE_BOOL:
        printf_filtered ("(TYPE_CODE_BOOL)");
        break;
      case TYPE_CODE_TYPEDEF:
        printf_filtered ("(TYPE_CODE_TYPEDEF)");
        break;
      default:
        printf_filtered ("(UNKNOWN TYPE CODE)");
        break;
    }
  puts_filtered ("\n");
  printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
  printfi_filtered (spaces, "objfile ");
  gdb_print_address (TYPE_OBJFILE (type), gdb_stdout);
  printf_filtered ("\n");
  printfi_filtered (spaces, "target_type ");
  gdb_print_address (TYPE_TARGET_TYPE (type), gdb_stdout);
  printf_filtered ("\n");
  if (TYPE_TARGET_TYPE (type) != NULL)
    {
      recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
    }
  printfi_filtered (spaces, "pointer_type ");
  gdb_print_address (TYPE_POINTER_TYPE (type), gdb_stdout);
  printf_filtered ("\n");
  printfi_filtered (spaces, "reference_type ");
  gdb_print_address (TYPE_REFERENCE_TYPE (type), gdb_stdout);
  printf_filtered ("\n");
  printfi_filtered (spaces, "flags 0x%x", TYPE_FLAGS (type));
  if (TYPE_FLAGS (type) & TYPE_FLAG_UNSIGNED)
    {
      puts_filtered (" TYPE_FLAG_UNSIGNED");
    }
  if (TYPE_FLAGS (type) & TYPE_FLAG_STUB)
    {
      puts_filtered (" TYPE_FLAG_STUB");
    }
  puts_filtered ("\n");
  printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type));
  gdb_print_address (TYPE_FIELDS (type), gdb_stdout);
  puts_filtered ("\n");
  for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
    {
      printfi_filtered (spaces + 2,
                        "[%d] bitpos %d bitsize %d type ",
                        idx, TYPE_FIELD_BITPOS (type, idx),
                        TYPE_FIELD_BITSIZE (type, idx));
      gdb_print_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout);
      printf_filtered (" name '%s' (",
                       TYPE_FIELD_NAME (type, idx) != NULL
                       ? TYPE_FIELD_NAME (type, idx)
                       : "<NULL>");
      gdb_print_address (TYPE_FIELD_NAME (type, idx), gdb_stdout);
      printf_filtered (")\n");
      if (TYPE_FIELD_TYPE (type, idx) != NULL)
        {
          recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
        }
    }
  printfi_filtered (spaces, "vptr_basetype ");
  gdb_print_address (TYPE_VPTR_BASETYPE (type), gdb_stdout);
  puts_filtered ("\n");
  if (TYPE_VPTR_BASETYPE (type) != NULL)
    {
      recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
    }
  printfi_filtered (spaces, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type));
  switch (TYPE_CODE (type))
    {
      case TYPE_CODE_METHOD:
      case TYPE_CODE_FUNC:
        printfi_filtered (spaces, "arg_types ");
        gdb_print_address (TYPE_ARG_TYPES (type), gdb_stdout);
        puts_filtered ("\n");
        print_arg_types (TYPE_ARG_TYPES (type), spaces);
        break;

      case TYPE_CODE_STRUCT:
        printfi_filtered (spaces, "cplus_stuff ");
        gdb_print_address (TYPE_CPLUS_SPECIFIC (type), gdb_stdout);
        puts_filtered ("\n");
        print_cplus_stuff (type, spaces);
        break;

      default:
        /* We have to pick one of the union types to be able print and test
           the value.  Pick cplus_struct_type, even though we know it isn't
           any particular one. */
        printfi_filtered (spaces, "type_specific ");
        gdb_print_address (TYPE_CPLUS_SPECIFIC (type), gdb_stdout);
        if (TYPE_CPLUS_SPECIFIC (type) != NULL)
          {
            printf_filtered (" (unknown data form)");
          }
        printf_filtered ("\n");
        break;

    }
  if (spaces == 0)
    obstack_free (&dont_print_type_obstack, NULL);
}

#endif  /* MAINTENANCE_CMDS */

void
_initialize_gdbtypes ()
{
  builtin_type_void =
    init_type (TYPE_CODE_VOID, 1,
               0,
               "void", (struct objfile *) NULL);
  builtin_type_char =
    init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
               0,
               "char", (struct objfile *) NULL);
  builtin_type_signed_char =
    init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
               0,
               "signed char", (struct objfile *) NULL);
  builtin_type_unsigned_char =
    init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
               TYPE_FLAG_UNSIGNED,
               "unsigned char", (struct objfile *) NULL);
  builtin_type_short =
    init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
               0,
               "short", (struct objfile *) NULL);
  builtin_type_unsigned_short =
    init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
               TYPE_FLAG_UNSIGNED,
               "unsigned short", (struct objfile *) NULL);
  builtin_type_int =
    init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
               0,
               "int", (struct objfile *) NULL);
  builtin_type_unsigned_int =
    init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
               TYPE_FLAG_UNSIGNED,
               "unsigned int", (struct objfile *) NULL);
  builtin_type_long =
    init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
               0,
               "long", (struct objfile *) NULL);
  builtin_type_unsigned_long =
    init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
               TYPE_FLAG_UNSIGNED,
               "unsigned long", (struct objfile *) NULL);
  builtin_type_long_long =
    init_type (TYPE_CODE_INT, TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
               0,
               "long long", (struct objfile *) NULL);
  builtin_type_unsigned_long_long = 
    init_type (TYPE_CODE_INT, TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
               TYPE_FLAG_UNSIGNED,
               "unsigned long long", (struct objfile *) NULL);
  builtin_type_float =
    init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
               0,
               "float", (struct objfile *) NULL);
  builtin_type_double =
    init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
               0,
               "double", (struct objfile *) NULL);
  builtin_type_long_double =
    init_type (TYPE_CODE_FLT, TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
               0,
               "long double", (struct objfile *) NULL);
  builtin_type_complex =
    init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
               0,
               "complex", (struct objfile *) NULL);
  TYPE_TARGET_TYPE (builtin_type_complex) = builtin_type_float;
  builtin_type_double_complex =
    init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
               0,
               "double complex", (struct objfile *) NULL);
  TYPE_TARGET_TYPE (builtin_type_double_complex) = builtin_type_double;
  builtin_type_string =
    init_type (TYPE_CODE_STRING, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
               0,
               "string", (struct objfile *) NULL);
}