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/* Abstraction of GNU v2 abi.
/* Abstraction of GNU v2 abi.
 
 
   Copyright (C) 2001, 2002, 2003, 2005, 2007, 2008, 2009, 2010
   Copyright (C) 2001, 2002, 2003, 2005, 2007, 2008, 2009, 2010
   Free Software Foundation, Inc.
   Free Software Foundation, Inc.
 
 
   Contributed by Daniel Berlin <dberlin@redhat.com>
   Contributed by Daniel Berlin <dberlin@redhat.com>
 
 
   This file is part of GDB.
   This file is part of GDB.
 
 
   This program is free software; you can redistribute it and/or modify
   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
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.
   (at your option) any later version.
 
 
   This program is distributed in the hope that it will be useful,
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   GNU General Public License for more details.
 
 
   You should have received a copy of the GNU General Public License
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 
#include "defs.h"
#include "defs.h"
#include "gdb_string.h"
#include "gdb_string.h"
#include "symtab.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "gdbtypes.h"
#include "value.h"
#include "value.h"
#include "demangle.h"
#include "demangle.h"
#include "cp-abi.h"
#include "cp-abi.h"
#include "cp-support.h"
#include "cp-support.h"
 
 
#include <ctype.h>
#include <ctype.h>
 
 
struct cp_abi_ops gnu_v2_abi_ops;
struct cp_abi_ops gnu_v2_abi_ops;
 
 
static int vb_match (struct type *, int, struct type *);
static int vb_match (struct type *, int, struct type *);
 
 
static enum dtor_kinds
static enum dtor_kinds
gnuv2_is_destructor_name (const char *name)
gnuv2_is_destructor_name (const char *name)
{
{
  if ((name[0] == '_' && is_cplus_marker (name[1]) && name[2] == '_')
  if ((name[0] == '_' && is_cplus_marker (name[1]) && name[2] == '_')
      || strncmp (name, "__dt__", 6) == 0)
      || strncmp (name, "__dt__", 6) == 0)
    return complete_object_dtor;
    return complete_object_dtor;
  else
  else
    return 0;
    return 0;
}
}
 
 
static enum ctor_kinds
static enum ctor_kinds
gnuv2_is_constructor_name (const char *name)
gnuv2_is_constructor_name (const char *name)
{
{
  if ((name[0] == '_' && name[1] == '_'
  if ((name[0] == '_' && name[1] == '_'
       && (isdigit (name[2]) || strchr ("Qt", name[2])))
       && (isdigit (name[2]) || strchr ("Qt", name[2])))
      || strncmp (name, "__ct__", 6) == 0)
      || strncmp (name, "__ct__", 6) == 0)
    return complete_object_ctor;
    return complete_object_ctor;
  else
  else
    return 0;
    return 0;
}
}
 
 
static int
static int
gnuv2_is_vtable_name (const char *name)
gnuv2_is_vtable_name (const char *name)
{
{
  return (((name)[0] == '_'
  return (((name)[0] == '_'
           && (((name)[1] == 'V' && (name)[2] == 'T')
           && (((name)[1] == 'V' && (name)[2] == 'T')
               || ((name)[1] == 'v' && (name)[2] == 't'))
               || ((name)[1] == 'v' && (name)[2] == 't'))
           && is_cplus_marker ((name)[3])) ||
           && is_cplus_marker ((name)[3])) ||
          ((name)[0] == '_' && (name)[1] == '_'
          ((name)[0] == '_' && (name)[1] == '_'
           && (name)[2] == 'v' && (name)[3] == 't' && (name)[4] == '_'));
           && (name)[2] == 'v' && (name)[3] == 't' && (name)[4] == '_'));
}
}
 
 
static int
static int
gnuv2_is_operator_name (const char *name)
gnuv2_is_operator_name (const char *name)
{
{
  return strncmp (name, "operator", 8) == 0;
  return strncmp (name, "operator", 8) == 0;
}
}
 
 


/* Return a virtual function as a value.
/* Return a virtual function as a value.
   ARG1 is the object which provides the virtual function
   ARG1 is the object which provides the virtual function
   table pointer.  *ARG1P is side-effected in calling this function.
   table pointer.  *ARG1P is side-effected in calling this function.
   F is the list of member functions which contains the desired virtual
   F is the list of member functions which contains the desired virtual
   function.
   function.
   J is an index into F which provides the desired virtual function.
   J is an index into F which provides the desired virtual function.
 
 
   TYPE is the type in which F is located.  */
   TYPE is the type in which F is located.  */
static struct value *
static struct value *
gnuv2_virtual_fn_field (struct value **arg1p, struct fn_field * f, int j,
gnuv2_virtual_fn_field (struct value **arg1p, struct fn_field * f, int j,
                        struct type * type, int offset)
                        struct type * type, int offset)
{
{
  struct value *arg1 = *arg1p;
  struct value *arg1 = *arg1p;
  struct type *type1 = check_typedef (value_type (arg1));
  struct type *type1 = check_typedef (value_type (arg1));
  struct type *entry_type;
  struct type *entry_type;
  /* First, get the virtual function table pointer.  That comes
  /* First, get the virtual function table pointer.  That comes
     with a strange type, so cast it to type `pointer to long' (which
     with a strange type, so cast it to type `pointer to long' (which
     should serve just fine as a function type).  Then, index into
     should serve just fine as a function type).  Then, index into
     the table, and convert final value to appropriate function type.  */
     the table, and convert final value to appropriate function type.  */
  struct value *entry;
  struct value *entry;
  struct value *vfn;
  struct value *vfn;
  struct value *vtbl;
  struct value *vtbl;
  LONGEST vi = (LONGEST) TYPE_FN_FIELD_VOFFSET (f, j);
  LONGEST vi = (LONGEST) TYPE_FN_FIELD_VOFFSET (f, j);
  struct type *fcontext = TYPE_FN_FIELD_FCONTEXT (f, j);
  struct type *fcontext = TYPE_FN_FIELD_FCONTEXT (f, j);
  struct type *context;
  struct type *context;
  struct type *context_vptr_basetype;
  struct type *context_vptr_basetype;
  int context_vptr_fieldno;
  int context_vptr_fieldno;
 
 
  if (fcontext == NULL)
  if (fcontext == NULL)
    /* We don't have an fcontext (e.g. the program was compiled with
    /* We don't have an fcontext (e.g. the program was compiled with
       g++ version 1).  Try to get the vtbl from the TYPE_VPTR_BASETYPE.
       g++ version 1).  Try to get the vtbl from the TYPE_VPTR_BASETYPE.
       This won't work right for multiple inheritance, but at least we
       This won't work right for multiple inheritance, but at least we
       should do as well as GDB 3.x did.  */
       should do as well as GDB 3.x did.  */
    fcontext = TYPE_VPTR_BASETYPE (type);
    fcontext = TYPE_VPTR_BASETYPE (type);
  context = lookup_pointer_type (fcontext);
  context = lookup_pointer_type (fcontext);
  /* Now context is a pointer to the basetype containing the vtbl.  */
  /* Now context is a pointer to the basetype containing the vtbl.  */
  if (TYPE_TARGET_TYPE (context) != type1)
  if (TYPE_TARGET_TYPE (context) != type1)
    {
    {
      struct value *tmp = value_cast (context, value_addr (arg1));
      struct value *tmp = value_cast (context, value_addr (arg1));
      arg1 = value_ind (tmp);
      arg1 = value_ind (tmp);
      type1 = check_typedef (value_type (arg1));
      type1 = check_typedef (value_type (arg1));
    }
    }
 
 
  context = type1;
  context = type1;
  /* Now context is the basetype containing the vtbl.  */
  /* Now context is the basetype containing the vtbl.  */
 
 
  /* This type may have been defined before its virtual function table
  /* This type may have been defined before its virtual function table
     was.  If so, fill in the virtual function table entry for the
     was.  If so, fill in the virtual function table entry for the
     type now.  */
     type now.  */
  context_vptr_fieldno = get_vptr_fieldno (context, &context_vptr_basetype);
  context_vptr_fieldno = get_vptr_fieldno (context, &context_vptr_basetype);
  /* FIXME: What to do if vptr_fieldno is still -1?  */
  /* FIXME: What to do if vptr_fieldno is still -1?  */
 
 
  /* The virtual function table is now an array of structures
  /* The virtual function table is now an array of structures
     which have the form { int16 offset, delta; void *pfn; }.  */
     which have the form { int16 offset, delta; void *pfn; }.  */
  vtbl = value_primitive_field (arg1, 0, context_vptr_fieldno,
  vtbl = value_primitive_field (arg1, 0, context_vptr_fieldno,
                                context_vptr_basetype);
                                context_vptr_basetype);
 
 
  /* With older versions of g++, the vtbl field pointed to an array
  /* With older versions of g++, the vtbl field pointed to an array
     of structures.  Nowadays it points directly to the structure. */
     of structures.  Nowadays it points directly to the structure. */
  if (TYPE_CODE (value_type (vtbl)) == TYPE_CODE_PTR
  if (TYPE_CODE (value_type (vtbl)) == TYPE_CODE_PTR
      && TYPE_CODE (TYPE_TARGET_TYPE (value_type (vtbl))) == TYPE_CODE_ARRAY)
      && TYPE_CODE (TYPE_TARGET_TYPE (value_type (vtbl))) == TYPE_CODE_ARRAY)
    {
    {
      /* Handle the case where the vtbl field points to an
      /* Handle the case where the vtbl field points to an
         array of structures. */
         array of structures. */
      vtbl = value_ind (vtbl);
      vtbl = value_ind (vtbl);
 
 
      /* Index into the virtual function table.  This is hard-coded because
      /* Index into the virtual function table.  This is hard-coded because
         looking up a field is not cheap, and it may be important to save
         looking up a field is not cheap, and it may be important to save
         time, e.g. if the user has set a conditional breakpoint calling
         time, e.g. if the user has set a conditional breakpoint calling
         a virtual function.  */
         a virtual function.  */
      entry = value_subscript (vtbl, vi);
      entry = value_subscript (vtbl, vi);
    }
    }
  else
  else
    {
    {
      /* Handle the case where the vtbl field points directly to a structure. */
      /* Handle the case where the vtbl field points directly to a structure. */
      vtbl = value_ptradd (vtbl, vi);
      vtbl = value_ptradd (vtbl, vi);
      entry = value_ind (vtbl);
      entry = value_ind (vtbl);
    }
    }
 
 
  entry_type = check_typedef (value_type (entry));
  entry_type = check_typedef (value_type (entry));
 
 
  if (TYPE_CODE (entry_type) == TYPE_CODE_STRUCT)
  if (TYPE_CODE (entry_type) == TYPE_CODE_STRUCT)
    {
    {
      /* Move the `this' pointer according to the virtual function table. */
      /* Move the `this' pointer according to the virtual function table. */
      set_value_offset (arg1, value_offset (arg1) + value_as_long (value_field (entry, 0)));
      set_value_offset (arg1, value_offset (arg1) + value_as_long (value_field (entry, 0)));
 
 
      if (!value_lazy (arg1))
      if (!value_lazy (arg1))
        {
        {
          set_value_lazy (arg1, 1);
          set_value_lazy (arg1, 1);
          value_fetch_lazy (arg1);
          value_fetch_lazy (arg1);
        }
        }
 
 
      vfn = value_field (entry, 2);
      vfn = value_field (entry, 2);
    }
    }
  else if (TYPE_CODE (entry_type) == TYPE_CODE_PTR)
  else if (TYPE_CODE (entry_type) == TYPE_CODE_PTR)
    vfn = entry;
    vfn = entry;
  else
  else
    error (_("I'm confused:  virtual function table has bad type"));
    error (_("I'm confused:  virtual function table has bad type"));
  /* Reinstantiate the function pointer with the correct type.  */
  /* Reinstantiate the function pointer with the correct type.  */
  deprecated_set_value_type (vfn, lookup_pointer_type (TYPE_FN_FIELD_TYPE (f, j)));
  deprecated_set_value_type (vfn, lookup_pointer_type (TYPE_FN_FIELD_TYPE (f, j)));
 
 
  *arg1p = arg1;
  *arg1p = arg1;
  return vfn;
  return vfn;
}
}
 
 
 
 
static struct type *
static struct type *
gnuv2_value_rtti_type (struct value *v, int *full, int *top, int *using_enc)
gnuv2_value_rtti_type (struct value *v, int *full, int *top, int *using_enc)
{
{
  struct type *known_type;
  struct type *known_type;
  struct type *rtti_type;
  struct type *rtti_type;
  CORE_ADDR coreptr;
  CORE_ADDR coreptr;
  struct value *vp;
  struct value *vp;
  long top_offset = 0;
  long top_offset = 0;
  char rtti_type_name[256];
  char rtti_type_name[256];
  CORE_ADDR vtbl;
  CORE_ADDR vtbl;
  struct minimal_symbol *minsym;
  struct minimal_symbol *minsym;
  struct symbol *sym;
  struct symbol *sym;
  char *demangled_name, *p;
  char *demangled_name, *p;
  struct type *btype;
  struct type *btype;
  struct type *known_type_vptr_basetype;
  struct type *known_type_vptr_basetype;
  int known_type_vptr_fieldno;
  int known_type_vptr_fieldno;
 
 
  if (full)
  if (full)
    *full = 0;
    *full = 0;
  if (top)
  if (top)
    *top = -1;
    *top = -1;
  if (using_enc)
  if (using_enc)
    *using_enc = 0;
    *using_enc = 0;
 
 
  /* Get declared type */
  /* Get declared type */
  known_type = value_type (v);
  known_type = value_type (v);
  CHECK_TYPEDEF (known_type);
  CHECK_TYPEDEF (known_type);
  /* RTTI works only or class objects */
  /* RTTI works only or class objects */
  if (TYPE_CODE (known_type) != TYPE_CODE_CLASS)
  if (TYPE_CODE (known_type) != TYPE_CODE_CLASS)
    return NULL;
    return NULL;
 
 
  /* Plan on this changing in the future as i get around to setting
  /* Plan on this changing in the future as i get around to setting
     the vtables properly for G++ compiled stuff.  Also, I'll be using
     the vtables properly for G++ compiled stuff.  Also, I'll be using
     the type info functions, which are always right.  Deal with it
     the type info functions, which are always right.  Deal with it
     until then.  */
     until then.  */
 
 
  /* Try to get the vptr basetype, fieldno.  */
  /* Try to get the vptr basetype, fieldno.  */
  known_type_vptr_fieldno = get_vptr_fieldno (known_type,
  known_type_vptr_fieldno = get_vptr_fieldno (known_type,
                                              &known_type_vptr_basetype);
                                              &known_type_vptr_basetype);
 
 
  /* If we can't find it, give up.  */
  /* If we can't find it, give up.  */
  if (known_type_vptr_fieldno < 0)
  if (known_type_vptr_fieldno < 0)
    return NULL;
    return NULL;
 
 
  /* Make sure our basetype and known type match, otherwise, cast
  /* Make sure our basetype and known type match, otherwise, cast
     so we can get at the vtable properly.
     so we can get at the vtable properly.
  */
  */
  btype = known_type_vptr_basetype;
  btype = known_type_vptr_basetype;
  CHECK_TYPEDEF (btype);
  CHECK_TYPEDEF (btype);
  if (btype != known_type )
  if (btype != known_type )
    {
    {
      v = value_cast (btype, v);
      v = value_cast (btype, v);
      if (using_enc)
      if (using_enc)
        *using_enc=1;
        *using_enc=1;
    }
    }
  /*
  /*
    We can't use value_ind here, because it would want to use RTTI, and
    We can't use value_ind here, because it would want to use RTTI, and
    we'd waste a bunch of time figuring out we already know the type.
    we'd waste a bunch of time figuring out we already know the type.
    Besides, we don't care about the type, just the actual pointer
    Besides, we don't care about the type, just the actual pointer
  */
  */
  if (value_address (value_field (v, known_type_vptr_fieldno)) == 0)
  if (value_address (value_field (v, known_type_vptr_fieldno)) == 0)
    return NULL;
    return NULL;
 
 
  vtbl = value_as_address (value_field (v, known_type_vptr_fieldno));
  vtbl = value_as_address (value_field (v, known_type_vptr_fieldno));
 
 
  /* Try to find a symbol that is the vtable */
  /* Try to find a symbol that is the vtable */
  minsym=lookup_minimal_symbol_by_pc(vtbl);
  minsym=lookup_minimal_symbol_by_pc(vtbl);
  if (minsym==NULL
  if (minsym==NULL
      || (demangled_name=SYMBOL_LINKAGE_NAME (minsym))==NULL
      || (demangled_name=SYMBOL_LINKAGE_NAME (minsym))==NULL
      || !is_vtable_name (demangled_name))
      || !is_vtable_name (demangled_name))
    return NULL;
    return NULL;
 
 
  /* If we just skip the prefix, we get screwed by namespaces */
  /* If we just skip the prefix, we get screwed by namespaces */
  demangled_name=cplus_demangle(demangled_name,DMGL_PARAMS|DMGL_ANSI);
  demangled_name=cplus_demangle(demangled_name,DMGL_PARAMS|DMGL_ANSI);
  p = strchr (demangled_name, ' ');
  p = strchr (demangled_name, ' ');
  if (p)
  if (p)
    *p = '\0';
    *p = '\0';
 
 
  /* Lookup the type for the name */
  /* Lookup the type for the name */
  /* FIXME: chastain/2003-11-26: block=NULL is bogus.  See pr gdb/1465. */
  /* FIXME: chastain/2003-11-26: block=NULL is bogus.  See pr gdb/1465. */
  rtti_type = cp_lookup_rtti_type (demangled_name, NULL);
  rtti_type = cp_lookup_rtti_type (demangled_name, NULL);
  if (rtti_type == NULL)
  if (rtti_type == NULL)
    return NULL;
    return NULL;
 
 
  if (TYPE_N_BASECLASSES(rtti_type) > 1 &&  full && (*full) != 1)
  if (TYPE_N_BASECLASSES(rtti_type) > 1 &&  full && (*full) != 1)
    {
    {
      if (top)
      if (top)
        *top=TYPE_BASECLASS_BITPOS(rtti_type,TYPE_VPTR_FIELDNO(rtti_type))/8;
        *top=TYPE_BASECLASS_BITPOS(rtti_type,TYPE_VPTR_FIELDNO(rtti_type))/8;
      if (top && ((*top) >0))
      if (top && ((*top) >0))
        {
        {
          if (TYPE_LENGTH(rtti_type) > TYPE_LENGTH(known_type))
          if (TYPE_LENGTH(rtti_type) > TYPE_LENGTH(known_type))
            {
            {
              if (full)
              if (full)
                *full=0;
                *full=0;
            }
            }
          else
          else
            {
            {
              if (full)
              if (full)
                *full=1;
                *full=1;
            }
            }
        }
        }
    }
    }
  else
  else
    {
    {
      if (full)
      if (full)
        *full=1;
        *full=1;
    }
    }
 
 
  return rtti_type;
  return rtti_type;
}
}
 
 
/* Return true if the INDEXth field of TYPE is a virtual baseclass
/* Return true if the INDEXth field of TYPE is a virtual baseclass
   pointer which is for the base class whose type is BASECLASS.  */
   pointer which is for the base class whose type is BASECLASS.  */
 
 
static int
static int
vb_match (struct type *type, int index, struct type *basetype)
vb_match (struct type *type, int index, struct type *basetype)
{
{
  struct type *fieldtype;
  struct type *fieldtype;
  char *name = TYPE_FIELD_NAME (type, index);
  char *name = TYPE_FIELD_NAME (type, index);
  char *field_class_name = NULL;
  char *field_class_name = NULL;
 
 
  if (*name != '_')
  if (*name != '_')
    return 0;
    return 0;
  /* gcc 2.4 uses _vb$.  */
  /* gcc 2.4 uses _vb$.  */
  if (name[1] == 'v' && name[2] == 'b' && is_cplus_marker (name[3]))
  if (name[1] == 'v' && name[2] == 'b' && is_cplus_marker (name[3]))
    field_class_name = name + 4;
    field_class_name = name + 4;
  /* gcc 2.5 will use __vb_.  */
  /* gcc 2.5 will use __vb_.  */
  if (name[1] == '_' && name[2] == 'v' && name[3] == 'b' && name[4] == '_')
  if (name[1] == '_' && name[2] == 'v' && name[3] == 'b' && name[4] == '_')
    field_class_name = name + 5;
    field_class_name = name + 5;
 
 
  if (field_class_name == NULL)
  if (field_class_name == NULL)
    /* This field is not a virtual base class pointer.  */
    /* This field is not a virtual base class pointer.  */
    return 0;
    return 0;
 
 
  /* It's a virtual baseclass pointer, now we just need to find out whether
  /* It's a virtual baseclass pointer, now we just need to find out whether
     it is for this baseclass.  */
     it is for this baseclass.  */
  fieldtype = TYPE_FIELD_TYPE (type, index);
  fieldtype = TYPE_FIELD_TYPE (type, index);
  if (fieldtype == NULL
  if (fieldtype == NULL
      || TYPE_CODE (fieldtype) != TYPE_CODE_PTR)
      || TYPE_CODE (fieldtype) != TYPE_CODE_PTR)
    /* "Can't happen".  */
    /* "Can't happen".  */
    return 0;
    return 0;
 
 
  /* What we check for is that either the types are equal (needed for
  /* What we check for is that either the types are equal (needed for
     nameless types) or have the same name.  This is ugly, and a more
     nameless types) or have the same name.  This is ugly, and a more
     elegant solution should be devised (which would probably just push
     elegant solution should be devised (which would probably just push
     the ugliness into symbol reading unless we change the stabs format).  */
     the ugliness into symbol reading unless we change the stabs format).  */
  if (TYPE_TARGET_TYPE (fieldtype) == basetype)
  if (TYPE_TARGET_TYPE (fieldtype) == basetype)
    return 1;
    return 1;
 
 
  if (TYPE_NAME (basetype) != NULL
  if (TYPE_NAME (basetype) != NULL
      && TYPE_NAME (TYPE_TARGET_TYPE (fieldtype)) != NULL
      && TYPE_NAME (TYPE_TARGET_TYPE (fieldtype)) != NULL
      && strcmp (TYPE_NAME (basetype),
      && strcmp (TYPE_NAME (basetype),
                 TYPE_NAME (TYPE_TARGET_TYPE (fieldtype))) == 0)
                 TYPE_NAME (TYPE_TARGET_TYPE (fieldtype))) == 0)
    return 1;
    return 1;
  return 0;
  return 0;
}
}
 
 
/* Compute the offset of the baseclass which is
/* Compute the offset of the baseclass which is
   the INDEXth baseclass of class TYPE,
   the INDEXth baseclass of class TYPE,
   for value at VALADDR (in host) at ADDRESS (in target).
   for value at VALADDR (in host) at ADDRESS (in target).
   The result is the offset of the baseclass value relative
   The result is the offset of the baseclass value relative
   to (the address of)(ARG) + OFFSET.
   to (the address of)(ARG) + OFFSET.
 
 
   -1 is returned on error. */
   -1 is returned on error. */
 
 
static int
static int
gnuv2_baseclass_offset (struct type *type, int index,
gnuv2_baseclass_offset (struct type *type, int index,
                        const bfd_byte *valaddr, CORE_ADDR address)
                        const bfd_byte *valaddr, CORE_ADDR address)
{
{
  struct type *basetype = TYPE_BASECLASS (type, index);
  struct type *basetype = TYPE_BASECLASS (type, index);
 
 
  if (BASETYPE_VIA_VIRTUAL (type, index))
  if (BASETYPE_VIA_VIRTUAL (type, index))
    {
    {
      /* Must hunt for the pointer to this virtual baseclass.  */
      /* Must hunt for the pointer to this virtual baseclass.  */
      int i, len = TYPE_NFIELDS (type);
      int i, len = TYPE_NFIELDS (type);
      int n_baseclasses = TYPE_N_BASECLASSES (type);
      int n_baseclasses = TYPE_N_BASECLASSES (type);
 
 
      /* First look for the virtual baseclass pointer
      /* First look for the virtual baseclass pointer
         in the fields.  */
         in the fields.  */
      for (i = n_baseclasses; i < len; i++)
      for (i = n_baseclasses; i < len; i++)
        {
        {
          if (vb_match (type, i, basetype))
          if (vb_match (type, i, basetype))
            {
            {
              CORE_ADDR addr
              CORE_ADDR addr
              = unpack_pointer (TYPE_FIELD_TYPE (type, i),
              = unpack_pointer (TYPE_FIELD_TYPE (type, i),
                                valaddr + (TYPE_FIELD_BITPOS (type, i) / 8));
                                valaddr + (TYPE_FIELD_BITPOS (type, i) / 8));
 
 
              return addr - (LONGEST) address;
              return addr - (LONGEST) address;
            }
            }
        }
        }
      /* Not in the fields, so try looking through the baseclasses.  */
      /* Not in the fields, so try looking through the baseclasses.  */
      for (i = index + 1; i < n_baseclasses; i++)
      for (i = index + 1; i < n_baseclasses; i++)
        {
        {
          int boffset =
          int boffset =
          baseclass_offset (type, i, valaddr, address);
          baseclass_offset (type, i, valaddr, address);
          if (boffset)
          if (boffset)
            return boffset;
            return boffset;
        }
        }
      /* Not found.  */
      /* Not found.  */
      return -1;
      return -1;
    }
    }
 
 
  /* Baseclass is easily computed.  */
  /* Baseclass is easily computed.  */
  return TYPE_BASECLASS_BITPOS (type, index) / 8;
  return TYPE_BASECLASS_BITPOS (type, index) / 8;
}
}
 
 
static void
static void
init_gnuv2_ops (void)
init_gnuv2_ops (void)
{
{
  gnu_v2_abi_ops.shortname = "gnu-v2";
  gnu_v2_abi_ops.shortname = "gnu-v2";
  gnu_v2_abi_ops.longname = "GNU G++ Version 2 ABI";
  gnu_v2_abi_ops.longname = "GNU G++ Version 2 ABI";
  gnu_v2_abi_ops.doc = "G++ Version 2 ABI";
  gnu_v2_abi_ops.doc = "G++ Version 2 ABI";
  gnu_v2_abi_ops.is_destructor_name = gnuv2_is_destructor_name;
  gnu_v2_abi_ops.is_destructor_name = gnuv2_is_destructor_name;
  gnu_v2_abi_ops.is_constructor_name = gnuv2_is_constructor_name;
  gnu_v2_abi_ops.is_constructor_name = gnuv2_is_constructor_name;
  gnu_v2_abi_ops.is_vtable_name = gnuv2_is_vtable_name;
  gnu_v2_abi_ops.is_vtable_name = gnuv2_is_vtable_name;
  gnu_v2_abi_ops.is_operator_name = gnuv2_is_operator_name;
  gnu_v2_abi_ops.is_operator_name = gnuv2_is_operator_name;
  gnu_v2_abi_ops.virtual_fn_field = gnuv2_virtual_fn_field;
  gnu_v2_abi_ops.virtual_fn_field = gnuv2_virtual_fn_field;
  gnu_v2_abi_ops.rtti_type = gnuv2_value_rtti_type;
  gnu_v2_abi_ops.rtti_type = gnuv2_value_rtti_type;
  gnu_v2_abi_ops.baseclass_offset = gnuv2_baseclass_offset;
  gnu_v2_abi_ops.baseclass_offset = gnuv2_baseclass_offset;
}
}
 
 
extern initialize_file_ftype _initialize_gnu_v2_abi; /* -Wmissing-prototypes */
extern initialize_file_ftype _initialize_gnu_v2_abi; /* -Wmissing-prototypes */
 
 
void
void
_initialize_gnu_v2_abi (void)
_initialize_gnu_v2_abi (void)
{
{
  init_gnuv2_ops ();
  init_gnuv2_ops ();
  register_cp_abi (&gnu_v2_abi_ops);
  register_cp_abi (&gnu_v2_abi_ops);
  set_cp_abi_as_auto_default (gnu_v2_abi_ops.shortname);
  set_cp_abi_as_auto_default (gnu_v2_abi_ops.shortname);
}
}
 
 

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