[deliverable/binutils-gdb.git] / gdb / cp-valprint.c

/* Support for printing C++ values for GDB, the GNU debugger.
   Copyright 1986, 1988, 1989, 1991, 1994, 1995
   Free Software Foundation, Inc.

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., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#include "defs.h"
#include "obstack.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "value.h"
#include "command.h"
#include "gdbcmd.h"
#include "demangle.h"
#include "annotate.h"

int vtblprint;			/* Controls printing of vtbl's */
int objectprint;		/* Controls looking up an object's derived type
				   using what we find in its vtables.  */
static int static_field_print;	/* Controls printing of static fields. */

static struct obstack dont_print_vb_obstack;
static struct obstack dont_print_statmem_obstack;

static void
cp_print_static_field PARAMS ((struct type *, value_ptr, GDB_FILE *, int, int,
			       enum val_prettyprint));

static void
cplus_print_value PARAMS ((struct type *, char *, GDB_FILE *, int, int,
			   enum val_prettyprint, struct type **));

/* BEGIN-FIXME:  Hooks into typeprint.c, find a better home for prototypes. */

extern void
c_type_print_base PARAMS ((struct type *, GDB_FILE *, int, int));

extern void
c_type_print_varspec_prefix PARAMS ((struct type *, GDB_FILE *, int, int));

extern void
cp_type_print_method_args PARAMS ((struct type **, char *, char *, int,
				   GDB_FILE *));

/* END-FIXME */

void
cp_print_class_method (valaddr, type, stream)
     char *valaddr;
     struct type *type;
     GDB_FILE *stream;
{
  struct type *domain;
  struct fn_field *f = NULL;
  int j = 0;
  int len2;
  int offset;
  char *kind = "";
  CORE_ADDR addr;
  struct symbol *sym;
  unsigned len;
  unsigned int i;

  check_stub_type (TYPE_TARGET_TYPE (type));
  domain = TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type));
  if (domain == (struct type *)NULL)
    {
      fprintf_filtered (stream, "<unknown>");
      return;
    }
  addr = unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr);
  if (METHOD_PTR_IS_VIRTUAL (addr))
    {
      offset = METHOD_PTR_TO_VOFFSET (addr);
      len = TYPE_NFN_FIELDS (domain);
      for (i = 0; i < len; i++)
	{
	  f = TYPE_FN_FIELDLIST1 (domain, i);
	  len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i);
	  
	  for (j = 0; j < len2; j++)
	    {
	      QUIT;
	      if (TYPE_FN_FIELD_VOFFSET (f, j) == offset)
		{
		  kind = "virtual ";
		  goto common;
		}
	    }
	}
    }
  else
    {
      sym = find_pc_function (addr);
      if (sym == 0)
	{
	  error ("invalid pointer to member function");
	}
      len = TYPE_NFN_FIELDS (domain);
      for (i = 0; i < len; i++)
	{
	  f = TYPE_FN_FIELDLIST1 (domain, i);
	  len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i);
	  
	  for (j = 0; j < len2; j++)
	    {
	      QUIT;
	      if (TYPE_FN_FIELD_STUB (f, j))
		check_stub_method (domain, i, j);
	      if (STREQ (SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j)))
		{
		  goto common;
		}
	    }
	}
    }
  common:
  if (i < len)
    {
      fprintf_filtered (stream, "&");
      c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (f, j), stream, 0, 0);
      fprintf_unfiltered (stream, kind);
      if (TYPE_FN_FIELD_PHYSNAME (f, j)[0] == '_'
	  && TYPE_FN_FIELD_PHYSNAME (f, j)[1] == CPLUS_MARKER)
	{
	  cp_type_print_method_args (TYPE_FN_FIELD_ARGS (f, j) + 1, "~",
				     TYPE_FN_FIELDLIST_NAME (domain, i),
				     0, stream);
	}
      else
	{
	  cp_type_print_method_args (TYPE_FN_FIELD_ARGS (f, j), "",
				     TYPE_FN_FIELDLIST_NAME (domain, i),
				     0, stream);
	}
    }
  else
    {
      fprintf_filtered (stream, "(");
      type_print (type, "", stream, -1);
      fprintf_filtered (stream, ") %d", (int) addr >> 3);
    }
}

/* This was what it was for gcc 2.4.5 and earlier.  */
static const char vtbl_ptr_name_old[] =
  { CPLUS_MARKER,'v','t','b','l','_','p','t','r','_','t','y','p','e', 0 };
/* It was changed to this after 2.4.5.  */
const char vtbl_ptr_name[] =
  { '_','_','v','t','b','l','_','p','t','r','_','t','y','p','e', 0 };

/* Return truth value for assertion that TYPE is of the type
   "pointer to virtual function".  */

int
cp_is_vtbl_ptr_type(type)
     struct type *type;
{
  char *typename = type_name_no_tag (type);

  return (typename != NULL
	  && (STREQ (typename, vtbl_ptr_name)
	      || STREQ (typename, vtbl_ptr_name_old)));
}

/* Return truth value for the assertion that TYPE is of the type
   "pointer to virtual function table".  */

int
cp_is_vtbl_member(type)
     struct type *type;
{
  if (TYPE_CODE (type) == TYPE_CODE_PTR)
    {
      type = TYPE_TARGET_TYPE (type);
      if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
	{
	  type = TYPE_TARGET_TYPE (type);
	  if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */
	      || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */
	    {
	      /* Virtual functions tables are full of pointers
		 to virtual functions. */
	      return cp_is_vtbl_ptr_type (type);
	    }
	}
    }
  return 0;
}

/* Mutually recursive subroutines of cplus_print_value and c_val_print to
   print out a structure's fields: cp_print_value_fields and cplus_print_value.

   TYPE, VALADDR, STREAM, RECURSE, and PRETTY have the
   same meanings as in cplus_print_value and c_val_print.

   DONT_PRINT is an array of baseclass types that we
   should not print, or zero if called from top level.  */

void
cp_print_value_fields (type, valaddr, stream, format, recurse, pretty,
		       dont_print_vb, dont_print_statmem)
     struct type *type;
     char *valaddr;
     GDB_FILE *stream;
     int format;
     int recurse;
     enum val_prettyprint pretty;
     struct type **dont_print_vb;
     int dont_print_statmem;
{
  int i, len, n_baseclasses;
  struct obstack tmp_obstack;
  char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack);

  check_stub_type (type);

  fprintf_filtered (stream, "{");
  len = TYPE_NFIELDS (type);
  n_baseclasses = TYPE_N_BASECLASSES (type);

  /* Print out baseclasses such that we don't print
     duplicates of virtual baseclasses.  */
  if (n_baseclasses > 0)
    cplus_print_value (type, valaddr, stream, format, recurse+1, pretty,
		       dont_print_vb);

  if (!len && n_baseclasses == 1)
    fprintf_filtered (stream, "<No data fields>");
  else
    {
      extern int inspect_it;
      int fields_seen = 0;

      if (dont_print_statmem == 0)
	{
	  /* If we're at top level, carve out a completely fresh
	     chunk of the obstack and use that until this particular
	     invocation returns.  */
	  tmp_obstack = dont_print_statmem_obstack;
	  obstack_finish (&dont_print_statmem_obstack);
	}

      for (i = n_baseclasses; i < len; i++)
	{
	  /* If requested, skip printing of static fields.  */
	  if (!static_field_print && TYPE_FIELD_STATIC (type, i))
	    continue;
	  if (fields_seen)
	    fprintf_filtered (stream, ", ");
	  else if (n_baseclasses > 0)
	    {
	      if (pretty)
		{
		  fprintf_filtered (stream, "\n");
		  print_spaces_filtered (2 + 2 * recurse, stream);
		  fputs_filtered ("members of ", stream);
		  fputs_filtered (type_name_no_tag (type), stream);
		  fputs_filtered (": ", stream);
		}
	    }
	  fields_seen = 1;

	  if (pretty)
	    {
	      fprintf_filtered (stream, "\n");
	      print_spaces_filtered (2 + 2 * recurse, stream);
	    }
	  else 
	    {
	      wrap_here (n_spaces (2 + 2 * recurse));
	    }
	  if (inspect_it)
	    {
	      if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
		fputs_filtered ("\"( ptr \"", stream);
	      else
		fputs_filtered ("\"( nodef \"", stream);
	      if (TYPE_FIELD_STATIC (type, i))
		fputs_filtered ("static ", stream);
	      fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
				       language_cplus,
				       DMGL_PARAMS | DMGL_ANSI);
	      fputs_filtered ("\" \"", stream);
	      fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
				       language_cplus,
				       DMGL_PARAMS | DMGL_ANSI);
	      fputs_filtered ("\") \"", stream);
	    }
	  else
	    {
	      annotate_field_begin (TYPE_FIELD_TYPE (type, i));

	      if (TYPE_FIELD_STATIC (type, i))
		fputs_filtered ("static ", stream);
	      fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
				       language_cplus,
				       DMGL_PARAMS | DMGL_ANSI);
	      annotate_field_name_end ();
	      fputs_filtered (" = ", stream);
	      annotate_field_value ();
	    }

	  if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i))
	    {
	      value_ptr v;

	      /* Bitfields require special handling, especially due to byte
		 order problems.  */
	      if (TYPE_FIELD_IGNORE (type, i))
		{
		   fputs_filtered ("<optimized out or zero length>", stream);
		}
	      else
		{
	           v = value_from_longest (TYPE_FIELD_TYPE (type, i),
				   unpack_field_as_long (type, valaddr, i));

                   val_print (TYPE_FIELD_TYPE(type, i), VALUE_CONTENTS (v), 0,
			      stream, format, 0, recurse + 1, pretty);
		}
	    }
	  else
	    {
	      if (TYPE_FIELD_IGNORE (type, i))
		{
		   fputs_filtered ("<optimized out or zero length>", stream);
		}
	      else if (TYPE_FIELD_STATIC (type, i))
		{
		  value_ptr v;
		  char *phys_name = TYPE_FIELD_STATIC_PHYSNAME (type, i);
		  struct symbol *sym =
		      lookup_symbol (phys_name, 0, VAR_NAMESPACE, 0, NULL);
		  if (sym == NULL)
		    fputs_filtered ("<optimized out>", stream);
		  else
		    {
		      v = value_at (TYPE_FIELD_TYPE (type, i),
				    (CORE_ADDR)SYMBOL_BLOCK_VALUE (sym));
		      cp_print_static_field (TYPE_FIELD_TYPE (type, i), v,
					     stream, format, recurse + 1,
					     pretty);
		    }
		}
	      else
		{
	           val_print (TYPE_FIELD_TYPE (type, i), 
			      valaddr + TYPE_FIELD_BITPOS (type, i) / 8,
			      0, stream, format, 0, recurse + 1, pretty);
		}
	    }
	  annotate_field_end ();
	}

      if (dont_print_statmem == 0)
	{
	  /* Free the space used to deal with the printing
	     of the members from top level.  */
	  obstack_free (&dont_print_statmem_obstack, last_dont_print);
	  dont_print_statmem_obstack = tmp_obstack;
	}

      if (pretty)
	{
	  fprintf_filtered (stream, "\n");
	  print_spaces_filtered (2 * recurse, stream);
	}
    }
  fprintf_filtered (stream, "}");
}

/* Special val_print routine to avoid printing multiple copies of virtual
   baseclasses.  */

static void
cplus_print_value (type, valaddr, stream, format, recurse, pretty,
		   dont_print_vb)
     struct type *type;
     char *valaddr;
     GDB_FILE *stream;
     int format;
     int recurse;
     enum val_prettyprint pretty;
     struct type **dont_print_vb;
{
  struct obstack tmp_obstack;
  struct type **last_dont_print
    = (struct type **)obstack_next_free (&dont_print_vb_obstack);
  int i, n_baseclasses = TYPE_N_BASECLASSES (type);

  if (dont_print_vb == 0)
    {
      /* If we're at top level, carve out a completely fresh
	 chunk of the obstack and use that until this particular
	 invocation returns.  */
      tmp_obstack = dont_print_vb_obstack;
      /* Bump up the high-water mark.  Now alpha is omega.  */
      obstack_finish (&dont_print_vb_obstack);
    }

  for (i = 0; i < n_baseclasses; i++)
    {
      /* FIXME-32x64--assumes that a target pointer can fit in a char *.
	 Fix it by nuking baseclass_addr.  */
      char *baddr;
      int err;
      char *basename;

      check_stub_type (TYPE_BASECLASS (type, i));
      basename = TYPE_NAME (TYPE_BASECLASS (type, i));

      if (BASETYPE_VIA_VIRTUAL (type, i))
	{
	  struct type **first_dont_print
	    = (struct type **)obstack_base (&dont_print_vb_obstack);

	  int j = (struct type **)obstack_next_free (&dont_print_vb_obstack)
	    - first_dont_print;

	  while (--j >= 0)
	    if (TYPE_BASECLASS (type, i) == first_dont_print[j])
	      goto flush_it;

	  obstack_ptr_grow (&dont_print_vb_obstack, TYPE_BASECLASS (type, i));
	}

      /* Fix to use baseclass_offset instead. FIXME */
      baddr = baseclass_addr (type, i, valaddr, 0, &err);
      if (err == 0 && baddr == 0)
	error ("could not find virtual baseclass %s\n",
	       basename ? basename : "");

      if (pretty)
	{
	  fprintf_filtered (stream, "\n");
	  print_spaces_filtered (2 * recurse, stream);
	}
      fputs_filtered ("<", stream);
      /* Not sure what the best notation is in the case where there is no
	 baseclass name.  */
      fputs_filtered (basename ? basename : "", stream);
      fputs_filtered ("> = ", stream);
      if (err != 0)
	{
	  fprintf_filtered (stream, "<invalid address ");
	  print_address_numeric ((CORE_ADDR) baddr, 1, stream);
	  fprintf_filtered (stream, ">");
	}
      else
	cp_print_value_fields (TYPE_BASECLASS (type, i), baddr, stream, format,
			       recurse, pretty,
			       (struct type **) obstack_base (&dont_print_vb_obstack),
			       0);
      fputs_filtered (", ", stream);

    flush_it:
      ;
    }

  if (dont_print_vb == 0)
    {
      /* Free the space used to deal with the printing
	 of this type from top level.  */
      obstack_free (&dont_print_vb_obstack, last_dont_print);
      /* Reset watermark so that we can continue protecting
	 ourselves from whatever we were protecting ourselves.  */
      dont_print_vb_obstack = tmp_obstack;
    }
}

/* Print value of a static member.
   To avoid infinite recursion when printing a class that contains
   a static instance of the class, we keep the addresses of all printed
   static member classes in an obstack and refuse to print them more
   than once.

   VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY
   have the same meanings as in c_val_print.  */

static void
cp_print_static_field (type, val, stream, format, recurse, pretty)
     struct type *type;
     value_ptr val;
     GDB_FILE *stream;
     int format;
     int recurse;
     enum val_prettyprint pretty;
{
  if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
    {
      CORE_ADDR *first_dont_print;
      int i;

      first_dont_print
	= (CORE_ADDR *)obstack_base (&dont_print_statmem_obstack);
      i = (CORE_ADDR *)obstack_next_free (&dont_print_statmem_obstack)
	- first_dont_print;

      while (--i >= 0)
	{
	  if (VALUE_ADDRESS (val) == first_dont_print[i])
	    {
	      fputs_filtered ("<same as static member of an already seen type>",
			      stream);
	      return;
	    }
	}

      obstack_grow (&dont_print_statmem_obstack, &VALUE_ADDRESS (val),
		    sizeof (CORE_ADDR));

      check_stub_type (type);
      cp_print_value_fields (type, VALUE_CONTENTS (val),
			     stream, format, recurse, pretty,
			     NULL, 1);
      return;
    }
  val_print (type, VALUE_CONTENTS (val), VALUE_ADDRESS (val),
	     stream, format, 0, recurse, pretty);
}

void
cp_print_class_member (valaddr, domain, stream, prefix)
     char *valaddr;
     struct type *domain;
     GDB_FILE *stream;
     char *prefix;
{
  
  /* VAL is a byte offset into the structure type DOMAIN.
     Find the name of the field for that offset and
     print it.  */
  int extra = 0;
  int bits = 0;
  register unsigned int i;
  unsigned len = TYPE_NFIELDS (domain);
  /* @@ Make VAL into bit offset */
  LONGEST val = unpack_long (builtin_type_int, valaddr) << 3;
  for (i = TYPE_N_BASECLASSES (domain); i < len; i++)
    {
      int bitpos = TYPE_FIELD_BITPOS (domain, i);
      QUIT;
      if (val == bitpos)
	break;
      if (val < bitpos && i != 0)
	{
	  /* Somehow pointing into a field.  */
	  i -= 1;
	  extra = (val - TYPE_FIELD_BITPOS (domain, i));
	  if (extra & 0x7)
	    bits = 1;
	  else
	    extra >>= 3;
	  break;
	}
    }
  if (i < len)
    {
      char *name;
      fprintf_filtered (stream, prefix);
      name = type_name_no_tag (domain);
      if (name)
        fputs_filtered (name, stream);
      else
	c_type_print_base (domain, stream, 0, 0);
      fprintf_filtered (stream, "::");
      fputs_filtered (TYPE_FIELD_NAME (domain, i), stream);
      if (extra)
	fprintf_filtered (stream, " + %d bytes", extra);
      if (bits)
	fprintf_filtered (stream, " (offset in bits)");
    }
  else
    fprintf_filtered (stream, "%d", val >> 3);
}

void
_initialize_cp_valprint ()
{
  add_show_from_set
    (add_set_cmd ("static-members", class_support, var_boolean,
		  (char *)&static_field_print,
		  "Set printing of C++ static members.",
		  &setprintlist),
     &showprintlist);
  /* Turn on printing of static fields.  */
  static_field_print = 1;

  add_show_from_set
    (add_set_cmd ("vtbl", class_support, var_boolean, (char *)&vtblprint,
		  "Set printing of C++ virtual function tables.",
		  &setprintlist),
     &showprintlist);

  add_show_from_set
    (add_set_cmd ("object", class_support, var_boolean, (char *)&objectprint,
	  "Set printing of object's derived type based on vtable info.",
		  &setprintlist),
     &showprintlist);

  /* Give people the defaults which they are used to.  */
  objectprint = 0;
  vtblprint = 0;
  obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *));
  obstack_specify_allocation (&dont_print_statmem_obstack,
			      32 * sizeof (CORE_ADDR), sizeof (CORE_ADDR),
			      xmalloc, free);
}
Commit	Line	Data
a8a69e63	1	/* Support for printing C++ values for GDB, the GNU debugger.
a1a0d974 PS	2	Copyright 1986, 1988, 1989, 1991, 1994, 1995
a1a0d974 PS	3	Free Software Foundation, Inc.
a8a69e63 FF	4
	5	This file is part of GDB.
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 2 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program; if not, write to the Free Software
	19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
	20
	21	#include "defs.h"
	22	#include "obstack.h"
	23	#include "symtab.h"
	24	#include "gdbtypes.h"
	25	#include "expression.h"
	26	#include "value.h"
	27	#include "command.h"
	28	#include "gdbcmd.h"
5e81259d	29	#include "demangle.h"
1c95d7ab	30	#include "annotate.h"
a8a69e63 FF	31
	32	int vtblprint; /* Controls printing of vtbl's */
	33	int objectprint; /* Controls looking up an object's derived type
	34	using what we find in its vtables. */
4c664b8d	35	static int static_field_print; /* Controls printing of static fields. */
a1a0d974 PS	36
	37	static struct obstack dont_print_vb_obstack;
	38	static struct obstack dont_print_statmem_obstack;
	39
	40	static void
	41	cp_print_static_field PARAMS ((struct type , value_ptr, GDB_FILE , int, int,
	42	enum val_prettyprint));
a8a69e63 FF	43
a8a69e63 FF	44	static void
199b2450	45	cplus_print_value PARAMS ((struct type , char , GDB_FILE *, int, int,
a8a69e63 FF	46	enum val_prettyprint, struct type **));
	47
	48	/* BEGIN-FIXME: Hooks into typeprint.c, find a better home for prototypes. */
	49
	50	extern void
199b2450	51	c_type_print_base PARAMS ((struct type , GDB_FILE , int, int));
a8a69e63 FF	52
a8a69e63 FF	53	extern void
199b2450	54	c_type_print_varspec_prefix PARAMS ((struct type , GDB_FILE , int, int));
a8a69e63 FF	55
	56	extern void
	57	cp_type_print_method_args PARAMS ((struct type *, char , char *, int,
199b2450	58	GDB_FILE *));
a8a69e63	59
a8a69e63 FF	60	/* END-FIXME */
a8a69e63 FF	61
c7da3ed3 FF	62	void
	63	cp_print_class_method (valaddr, type, stream)
	64	char *valaddr;
	65	struct type *type;
199b2450	66	GDB_FILE *stream;
c7da3ed3 FF	67	{
c7da3ed3 FF	68	struct type *domain;
72cd0384 RP	69	struct fn_field *f = NULL;
72cd0384 RP	70	int j = 0;
c7da3ed3 FF	71	int len2;
	72	int offset;
	73	char *kind = "";
	74	CORE_ADDR addr;
	75	struct symbol *sym;
	76	unsigned len;
	77	unsigned int i;
	78
30d20d15	79	check_stub_type (TYPE_TARGET_TYPE (type));
c7da3ed3	80	domain = TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type));
30d20d15 PS	81	if (domain == (struct type *)NULL)
	82	{
	83	fprintf_filtered (stream, "<unknown>");
	84	return;
	85	}
c7da3ed3 FF	86	addr = unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr);
	87	if (METHOD_PTR_IS_VIRTUAL (addr))
	88	{
	89	offset = METHOD_PTR_TO_VOFFSET (addr);
	90	len = TYPE_NFN_FIELDS (domain);
	91	for (i = 0; i < len; i++)
	92	{
	93	f = TYPE_FN_FIELDLIST1 (domain, i);
	94	len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i);
	95
	96	for (j = 0; j < len2; j++)
	97	{
	98	QUIT;
	99	if (TYPE_FN_FIELD_VOFFSET (f, j) == offset)
	100	{
	101	kind = "virtual ";
	102	goto common;
	103	}
	104	}
	105	}
	106	}
	107	else
	108	{
	109	sym = find_pc_function (addr);
	110	if (sym == 0)
	111	{
	112	error ("invalid pointer to member function");
	113	}
	114	len = TYPE_NFN_FIELDS (domain);
	115	for (i = 0; i < len; i++)
	116	{
	117	f = TYPE_FN_FIELDLIST1 (domain, i);
	118	len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i);
	119
	120	for (j = 0; j < len2; j++)
	121	{
	122	QUIT;
39cb3d04 PS	123	if (TYPE_FN_FIELD_STUB (f, j))
39cb3d04 PS	124	check_stub_method (domain, i, j);
c7da3ed3 FF	125	if (STREQ (SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j)))
	126	{
	127	goto common;
	128	}
	129	}
	130	}
	131	}
	132	common:
	133	if (i < len)
	134	{
	135	fprintf_filtered (stream, "&");
	136	c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (f, j), stream, 0, 0);
199b2450	137	fprintf_unfiltered (stream, kind);
c7da3ed3 FF	138	if (TYPE_FN_FIELD_PHYSNAME (f, j)[0] == '_'
	139	&& TYPE_FN_FIELD_PHYSNAME (f, j)[1] == CPLUS_MARKER)
	140	{
	141	cp_type_print_method_args (TYPE_FN_FIELD_ARGS (f, j) + 1, "~",
	142	TYPE_FN_FIELDLIST_NAME (domain, i),
	143	0, stream);
	144	}
	145	else
	146	{
	147	cp_type_print_method_args (TYPE_FN_FIELD_ARGS (f, j), "",
	148	TYPE_FN_FIELDLIST_NAME (domain, i),
	149	0, stream);
	150	}
	151	}
	152	else
	153	{
	154	fprintf_filtered (stream, "(");
	155	type_print (type, "", stream, -1);
	156	fprintf_filtered (stream, ") %d", (int) addr >> 3);
	157	}
	158	}
	159
36a2283d PB	160	/* This was what it was for gcc 2.4.5 and earlier. */
	161	static const char vtbl_ptr_name_old[] =
	162	{ CPLUS_MARKER,'v','t','b','l','_','p','t','r','_','t','y','p','e', 0 };
	163	/* It was changed to this after 2.4.5. */
	164	const char vtbl_ptr_name[] =
	165	{ '_','_','v','t','b','l','_','p','t','r','_','t','y','p','e', 0 };
	166
a8a69e63 FF	167	/* Return truth value for assertion that TYPE is of the type
	168	"pointer to virtual function". */
	169
	170	int
	171	cp_is_vtbl_ptr_type(type)
	172	struct type *type;
	173	{
	174	char *typename = type_name_no_tag (type);
a8a69e63	175
8f341c15 JK	176	return (typename != NULL
	177	&& (STREQ (typename, vtbl_ptr_name)
	178	\|\| STREQ (typename, vtbl_ptr_name_old)));
a8a69e63 FF	179	}
	180
	181	/* Return truth value for the assertion that TYPE is of the type
	182	"pointer to virtual function table". */
	183
	184	int
	185	cp_is_vtbl_member(type)
	186	struct type *type;
	187	{
	188	if (TYPE_CODE (type) == TYPE_CODE_PTR)
36a2283d PB	189	{
	190	type = TYPE_TARGET_TYPE (type);
	191	if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
	192	{
	193	type = TYPE_TARGET_TYPE (type);
	194	if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */
	195	\|\| TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */
	196	{
	197	/* Virtual functions tables are full of pointers
	198	to virtual functions. */
	199	return cp_is_vtbl_ptr_type (type);
	200	}
	201	}
	202	}
a8a69e63 FF	203	return 0;
	204	}
	205
	206	/* Mutually recursive subroutines of cplus_print_value and c_val_print to
	207	print out a structure's fields: cp_print_value_fields and cplus_print_value.
	208
	209	TYPE, VALADDR, STREAM, RECURSE, and PRETTY have the
	210	same meanings as in cplus_print_value and c_val_print.
	211
	212	DONT_PRINT is an array of baseclass types that we
	213	should not print, or zero if called from top level. */
	214
	215	void
	216	cp_print_value_fields (type, valaddr, stream, format, recurse, pretty,
a1a0d974	217	dont_print_vb, dont_print_statmem)
a8a69e63 FF	218	struct type *type;
a8a69e63 FF	219	char *valaddr;
199b2450	220	GDB_FILE *stream;
a8a69e63 FF	221	int format;
	222	int recurse;
	223	enum val_prettyprint pretty;
a1a0d974 PS	224	struct type **dont_print_vb;
a1a0d974 PS	225	int dont_print_statmem;
a8a69e63 FF	226	{
a8a69e63 FF	227	int i, len, n_baseclasses;
a1a0d974 PS	228	struct obstack tmp_obstack;
a1a0d974 PS	229	char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack);
a8a69e63 FF	230
	231	check_stub_type (type);
	232
	233	fprintf_filtered (stream, "{");
	234	len = TYPE_NFIELDS (type);
	235	n_baseclasses = TYPE_N_BASECLASSES (type);
	236
	237	/* Print out baseclasses such that we don't print
	238	duplicates of virtual baseclasses. */
	239	if (n_baseclasses > 0)
	240	cplus_print_value (type, valaddr, stream, format, recurse+1, pretty,
a1a0d974	241	dont_print_vb);
a8a69e63 FF	242
	243	if (!len && n_baseclasses == 1)
	244	fprintf_filtered (stream, "<No data fields>");
	245	else
	246	{
	247	extern int inspect_it;
	248	int fields_seen = 0;
	249
a1a0d974 PS	250	if (dont_print_statmem == 0)
	251	{
	252	/* If we're at top level, carve out a completely fresh
	253	chunk of the obstack and use that until this particular
	254	invocation returns. */
	255	tmp_obstack = dont_print_statmem_obstack;
	256	obstack_finish (&dont_print_statmem_obstack);
	257	}
	258
a8a69e63 FF	259	for (i = n_baseclasses; i < len; i++)
a8a69e63 FF	260	{
4c664b8d PS	261	/* If requested, skip printing of static fields. */
4c664b8d PS	262	if (!static_field_print && TYPE_FIELD_STATIC (type, i))
a8a69e63 FF	263	continue;
	264	if (fields_seen)
	265	fprintf_filtered (stream, ", ");
	266	else if (n_baseclasses > 0)
	267	{
	268	if (pretty)
	269	{
	270	fprintf_filtered (stream, "\n");
	271	print_spaces_filtered (2 + 2 * recurse, stream);
	272	fputs_filtered ("members of ", stream);
	273	fputs_filtered (type_name_no_tag (type), stream);
	274	fputs_filtered (": ", stream);
	275	}
	276	}
	277	fields_seen = 1;
	278
	279	if (pretty)
	280	{
	281	fprintf_filtered (stream, "\n");
	282	print_spaces_filtered (2 + 2 * recurse, stream);
	283	}
	284	else
	285	{
	286	wrap_here (n_spaces (2 + 2 * recurse));
	287	}
	288	if (inspect_it)
	289	{
	290	if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
	291	fputs_filtered ("\"( ptr \"", stream);
	292	else
	293	fputs_filtered ("\"( nodef \"", stream);
4c664b8d PS	294	if (TYPE_FIELD_STATIC (type, i))
4c664b8d PS	295	fputs_filtered ("static ", stream);
5e81259d FF	296	fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
	297	language_cplus,
	298	DMGL_PARAMS \| DMGL_ANSI);
a8a69e63	299	fputs_filtered ("\" \"", stream);
5e81259d FF	300	fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
	301	language_cplus,
	302	DMGL_PARAMS \| DMGL_ANSI);
a8a69e63 FF	303	fputs_filtered ("\") \"", stream);
	304	}
	305	else
	306	{
1c95d7ab	307	annotate_field_begin (TYPE_FIELD_TYPE (type, i));
da988c20	308
4c664b8d PS	309	if (TYPE_FIELD_STATIC (type, i))
4c664b8d PS	310	fputs_filtered ("static ", stream);
5e81259d FF	311	fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
	312	language_cplus,
	313	DMGL_PARAMS \| DMGL_ANSI);
1c95d7ab	314	annotate_field_name_end ();
a8a69e63	315	fputs_filtered (" = ", stream);
1c95d7ab	316	annotate_field_value ();
96f7edbd JK	317	}
96f7edbd JK	318
4c664b8d	319	if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i))
a8a69e63	320	{
82a2edfb	321	value_ptr v;
a8a69e63 FF	322
	323	/* Bitfields require special handling, especially due to byte
	324	order problems. */
024f65b1 KH	325	if (TYPE_FIELD_IGNORE (type, i))
024f65b1 KH	326	{
aa074e84	327	fputs_filtered ("<optimized out or zero length>", stream);
024f65b1 KH	328	}
	329	else
	330	{
	331	v = value_from_longest (TYPE_FIELD_TYPE (type, i),
a8a69e63 FF	332	unpack_field_as_long (type, valaddr, i));
a8a69e63 FF	333
dda398c3 JK	334	val_print (TYPE_FIELD_TYPE(type, i), VALUE_CONTENTS (v), 0,
dda398c3 JK	335	stream, format, 0, recurse + 1, pretty);
024f65b1	336	}
a8a69e63 FF	337	}
	338	else
	339	{
024f65b1 KH	340	if (TYPE_FIELD_IGNORE (type, i))
024f65b1 KH	341	{
aa074e84	342	fputs_filtered ("<optimized out or zero length>", stream);
024f65b1	343	}
4c664b8d PS	344	else if (TYPE_FIELD_STATIC (type, i))
	345	{
	346	value_ptr v;
	347	char *phys_name = TYPE_FIELD_STATIC_PHYSNAME (type, i);
	348	struct symbol *sym =
	349	lookup_symbol (phys_name, 0, VAR_NAMESPACE, 0, NULL);
	350	if (sym == NULL)
	351	fputs_filtered ("<optimized out>", stream);
	352	else
	353	{
	354	v = value_at (TYPE_FIELD_TYPE (type, i),
	355	(CORE_ADDR)SYMBOL_BLOCK_VALUE (sym));
a1a0d974 PS	356	cp_print_static_field (TYPE_FIELD_TYPE (type, i), v,
	357	stream, format, recurse + 1,
	358	pretty);
4c664b8d PS	359	}
4c664b8d PS	360	}
024f65b1 KH	361	else
024f65b1 KH	362	{
dda398c3 JK	363	val_print (TYPE_FIELD_TYPE (type, i),
	364	valaddr + TYPE_FIELD_BITPOS (type, i) / 8,
	365	0, stream, format, 0, recurse + 1, pretty);
024f65b1	366	}
a8a69e63	367	}
1c95d7ab	368	annotate_field_end ();
a8a69e63	369	}
96f7edbd	370
a1a0d974 PS	371	if (dont_print_statmem == 0)
	372	{
	373	/* Free the space used to deal with the printing
	374	of the members from top level. */
	375	obstack_free (&dont_print_statmem_obstack, last_dont_print);
	376	dont_print_statmem_obstack = tmp_obstack;
	377	}
	378
a8a69e63 FF	379	if (pretty)
	380	{
	381	fprintf_filtered (stream, "\n");
	382	print_spaces_filtered (2 * recurse, stream);
	383	}
	384	}
	385	fprintf_filtered (stream, "}");
	386	}
	387
	388	/* Special val_print routine to avoid printing multiple copies of virtual
	389	baseclasses. */
	390
	391	static void
a1a0d974 PS	392	cplus_print_value (type, valaddr, stream, format, recurse, pretty,
a1a0d974 PS	393	dont_print_vb)
a8a69e63 FF	394	struct type *type;
a8a69e63 FF	395	char *valaddr;
199b2450	396	GDB_FILE *stream;
a8a69e63 FF	397	int format;
	398	int recurse;
	399	enum val_prettyprint pretty;
a1a0d974	400	struct type **dont_print_vb;
a8a69e63 FF	401	{
	402	struct obstack tmp_obstack;
	403	struct type **last_dont_print
a1a0d974	404	= (struct type **)obstack_next_free (&dont_print_vb_obstack);
a8a69e63 FF	405	int i, n_baseclasses = TYPE_N_BASECLASSES (type);
a8a69e63 FF	406
a1a0d974	407	if (dont_print_vb == 0)
a8a69e63 FF	408	{
	409	/* If we're at top level, carve out a completely fresh
	410	chunk of the obstack and use that until this particular
	411	invocation returns. */
a1a0d974	412	tmp_obstack = dont_print_vb_obstack;
a8a69e63	413	/* Bump up the high-water mark. Now alpha is omega. */
a1a0d974	414	obstack_finish (&dont_print_vb_obstack);
a8a69e63 FF	415	}
	416
	417	for (i = 0; i < n_baseclasses; i++)
	418	{
5e678752 JK	419	/* FIXME-32x64--assumes that a target pointer can fit in a char *.
5e678752 JK	420	Fix it by nuking baseclass_addr. */
a8a69e63 FF	421	char *baddr;
a8a69e63 FF	422	int err;
2d2fc7e4 JK	423	char *basename;
	424
	425	check_stub_type (TYPE_BASECLASS (type, i));
	426	basename = TYPE_NAME (TYPE_BASECLASS (type, i));
a8a69e63 FF	427
	428	if (BASETYPE_VIA_VIRTUAL (type, i))
	429	{
	430	struct type **first_dont_print
a1a0d974	431	= (struct type **)obstack_base (&dont_print_vb_obstack);
a8a69e63	432
a1a0d974	433	int j = (struct type **)obstack_next_free (&dont_print_vb_obstack)
a8a69e63 FF	434	- first_dont_print;
	435
	436	while (--j >= 0)
	437	if (TYPE_BASECLASS (type, i) == first_dont_print[j])
	438	goto flush_it;
	439
a1a0d974	440	obstack_ptr_grow (&dont_print_vb_obstack, TYPE_BASECLASS (type, i));
a8a69e63 FF	441	}
	442
	443	/* Fix to use baseclass_offset instead. FIXME */
	444	baddr = baseclass_addr (type, i, valaddr, 0, &err);
	445	if (err == 0 && baddr == 0)
1410f5f1 JK	446	error ("could not find virtual baseclass %s\n",
1410f5f1 JK	447	basename ? basename : "");
a8a69e63 FF	448
	449	if (pretty)
	450	{
	451	fprintf_filtered (stream, "\n");
	452	print_spaces_filtered (2 * recurse, stream);
	453	}
	454	fputs_filtered ("<", stream);
1410f5f1 JK	455	/* Not sure what the best notation is in the case where there is no
	456	baseclass name. */
	457	fputs_filtered (basename ? basename : "", stream);
a8a69e63 FF	458	fputs_filtered ("> = ", stream);
a8a69e63 FF	459	if (err != 0)
833e0d94 JK	460	{
833e0d94 JK	461	fprintf_filtered (stream, "<invalid address ");
d24c0599	462	print_address_numeric ((CORE_ADDR) baddr, 1, stream);
833e0d94 JK	463	fprintf_filtered (stream, ">");
833e0d94 JK	464	}
a8a69e63 FF	465	else
	466	cp_print_value_fields (TYPE_BASECLASS (type, i), baddr, stream, format,
	467	recurse, pretty,
a1a0d974 PS	468	(struct type **) obstack_base (&dont_print_vb_obstack),
a1a0d974 PS	469	0);
a8a69e63 FF	470	fputs_filtered (", ", stream);
	471
	472	flush_it:
	473	;
	474	}
	475
a1a0d974	476	if (dont_print_vb == 0)
a8a69e63 FF	477	{
	478	/* Free the space used to deal with the printing
	479	of this type from top level. */
a1a0d974	480	obstack_free (&dont_print_vb_obstack, last_dont_print);
a8a69e63 FF	481	/* Reset watermark so that we can continue protecting
a8a69e63 FF	482	ourselves from whatever we were protecting ourselves. */
a1a0d974 PS	483	dont_print_vb_obstack = tmp_obstack;
	484	}
	485	}
	486
	487	/* Print value of a static member.
	488	To avoid infinite recursion when printing a class that contains
	489	a static instance of the class, we keep the addresses of all printed
	490	static member classes in an obstack and refuse to print them more
	491	than once.
	492
	493	VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY
	494	have the same meanings as in c_val_print. */
	495
	496	static void
	497	cp_print_static_field (type, val, stream, format, recurse, pretty)
	498	struct type *type;
	499	value_ptr val;
	500	GDB_FILE *stream;
	501	int format;
	502	int recurse;
	503	enum val_prettyprint pretty;
	504	{
	505	if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
	506	{
	507	CORE_ADDR *first_dont_print;
	508	int i;
	509
	510	first_dont_print
	511	= (CORE_ADDR *)obstack_base (&dont_print_statmem_obstack);
	512	i = (CORE_ADDR *)obstack_next_free (&dont_print_statmem_obstack)
	513	- first_dont_print;
	514
	515	while (--i >= 0)
	516	{
	517	if (VALUE_ADDRESS (val) == first_dont_print[i])
	518	{
	519	fputs_filtered ("<same as static member of an already seen type>",
	520	stream);
	521	return;
	522	}
	523	}
	524
	525	obstack_grow (&dont_print_statmem_obstack, &VALUE_ADDRESS (val),
	526	sizeof (CORE_ADDR));
	527
	528	check_stub_type (type);
	529	cp_print_value_fields (type, VALUE_CONTENTS (val),
	530	stream, format, recurse, pretty,
	531	NULL, 1);
	532	return;
a8a69e63	533	}
a1a0d974 PS	534	val_print (type, VALUE_CONTENTS (val), VALUE_ADDRESS (val),
a1a0d974 PS	535	stream, format, 0, recurse, pretty);
a8a69e63 FF	536	}
	537
	538	void
	539	cp_print_class_member (valaddr, domain, stream, prefix)
	540	char *valaddr;
	541	struct type *domain;
199b2450	542	GDB_FILE *stream;
a8a69e63 FF	543	char *prefix;
	544	{
	545
	546	/* VAL is a byte offset into the structure type DOMAIN.
	547	Find the name of the field for that offset and
	548	print it. */
	549	int extra = 0;
	550	int bits = 0;
	551	register unsigned int i;
	552	unsigned len = TYPE_NFIELDS (domain);
	553	/* @@ Make VAL into bit offset */
	554	LONGEST val = unpack_long (builtin_type_int, valaddr) << 3;
	555	for (i = TYPE_N_BASECLASSES (domain); i < len; i++)
	556	{
	557	int bitpos = TYPE_FIELD_BITPOS (domain, i);
	558	QUIT;
	559	if (val == bitpos)
	560	break;
	561	if (val < bitpos && i != 0)
	562	{
	563	/* Somehow pointing into a field. */
	564	i -= 1;
	565	extra = (val - TYPE_FIELD_BITPOS (domain, i));
	566	if (extra & 0x7)
	567	bits = 1;
	568	else
	569	extra >>= 3;
	570	break;
	571	}
	572	}
	573	if (i < len)
	574	{
	575	char *name;
	576	fprintf_filtered (stream, prefix);
	577	name = type_name_no_tag (domain);
	578	if (name)
	579	fputs_filtered (name, stream);
	580	else
	581	c_type_print_base (domain, stream, 0, 0);
	582	fprintf_filtered (stream, "::");
	583	fputs_filtered (TYPE_FIELD_NAME (domain, i), stream);
	584	if (extra)
	585	fprintf_filtered (stream, " + %d bytes", extra);
	586	if (bits)
	587	fprintf_filtered (stream, " (offset in bits)");
	588	}
	589	else
	590	fprintf_filtered (stream, "%d", val >> 3);
	591	}
	592
	593	void
	594	_initialize_cp_valprint ()
	595	{
4c664b8d PS	596	add_show_from_set
	597	(add_set_cmd ("static-members", class_support, var_boolean,
	598	(char *)&static_field_print,
	599	"Set printing of C++ static members.",
	600	&setprintlist),
	601	&showprintlist);
	602	/* Turn on printing of static fields. */
	603	static_field_print = 1;
	604
a8a69e63 FF	605	add_show_from_set
	606	(add_set_cmd ("vtbl", class_support, var_boolean, (char *)&vtblprint,
	607	"Set printing of C++ virtual function tables.",
	608	&setprintlist),
	609	&showprintlist);
	610
	611	add_show_from_set
	612	(add_set_cmd ("object", class_support, var_boolean, (char *)&objectprint,
	613	"Set printing of object's derived type based on vtable info.",
	614	&setprintlist),
	615	&showprintlist);
	616
	617	/* Give people the defaults which they are used to. */
	618	objectprint = 0;
	619	vtblprint = 0;
a1a0d974 PS	620	obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *));
	621	obstack_specify_allocation (&dont_print_statmem_obstack,
	622	32 * sizeof (CORE_ADDR), sizeof (CORE_ADDR),
	623	xmalloc, free);
a8a69e63	624	}