[thirdparty/binutils-gdb.git] / gdb / c-valprint.c

/* Support for printing C values for GDB, the GNU debugger.

   Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996,
   1997, 1998, 1999, 2000, 2001, 2003, 2005 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., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include "defs.h"
#include "gdb_string.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "value.h"
#include "valprint.h"
#include "language.h"
#include "c-lang.h"
#include "cp-abi.h"
#include "target.h"
\f

/* Print function pointer with inferior address ADDRESS onto stdio
   stream STREAM.  */

static void
print_function_pointer_address (CORE_ADDR address, struct ui_file *stream)
{
  CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch,
							    address,
							    &current_target);

  /* If the function pointer is represented by a description, print the
     address of the description.  */
  if (addressprint && func_addr != address)
    {
      fputs_filtered ("@", stream);
      print_address_numeric (address, 1, stream);
      fputs_filtered (": ", stream);
    }
  print_address_demangle (func_addr, stream, demangle);
}


/* Print data of type TYPE located at VALADDR (within GDB), which came from
   the inferior at address ADDRESS, onto stdio stream STREAM according to
   FORMAT (a letter or 0 for natural format).  The data at VALADDR is in
   target byte order.

   If the data are a string pointer, returns the number of string characters
   printed.

   If DEREF_REF is nonzero, then dereference references, otherwise just print
   them like pointers.

   The PRETTY parameter controls prettyprinting.  */

int
c_val_print (struct type *type, const bfd_byte *valaddr, int embedded_offset,
	     CORE_ADDR address, struct ui_file *stream, int format,
	     int deref_ref, int recurse, enum val_prettyprint pretty)
{
  unsigned int i = 0;	/* Number of characters printed */
  unsigned len;
  struct type *elttype;
  unsigned eltlen;
  LONGEST val;
  CORE_ADDR addr;

  CHECK_TYPEDEF (type);
  switch (TYPE_CODE (type))
    {
    case TYPE_CODE_ARRAY:
      elttype = check_typedef (TYPE_TARGET_TYPE (type));
      if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
	{
	  eltlen = TYPE_LENGTH (elttype);
	  len = TYPE_LENGTH (type) / eltlen;
	  if (prettyprint_arrays)
	    {
	      print_spaces_filtered (2 + 2 * recurse, stream);
	    }
	  /* For an array of chars, print with string syntax.  */
	  if (eltlen == 1 &&
	      ((TYPE_CODE (elttype) == TYPE_CODE_INT)
	       || ((current_language->la_language == language_m2)
		   && (TYPE_CODE (elttype) == TYPE_CODE_CHAR)))
	      && (format == 0 || format == 's'))
	    {
	      /* If requested, look for the first null char and only print
	         elements up to it.  */
	      if (stop_print_at_null)
		{
		  unsigned int temp_len;

		  /* Look for a NULL char. */
		  for (temp_len = 0;
		       (valaddr + embedded_offset)[temp_len]
		       && temp_len < len && temp_len < print_max;
		       temp_len++);
		  len = temp_len;
		}

	      LA_PRINT_STRING (stream, valaddr + embedded_offset, len, eltlen, 0);
	      i = len;
	    }
	  else
	    {
	      fprintf_filtered (stream, "{");
	      /* If this is a virtual function table, print the 0th
	         entry specially, and the rest of the members normally.  */
	      if (cp_is_vtbl_ptr_type (elttype))
		{
		  i = 1;
		  fprintf_filtered (stream, _("%d vtable entries"), len - 1);
		}
	      else
		{
		  i = 0;
		}
	      val_print_array_elements (type, valaddr + embedded_offset, address, stream,
				     format, deref_ref, recurse, pretty, i);
	      fprintf_filtered (stream, "}");
	    }
	  break;
	}
      /* Array of unspecified length: treat like pointer to first elt.  */
      addr = address;
      goto print_unpacked_pointer;

    case TYPE_CODE_PTR:
      if (format && format != 's')
	{
	  print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
	  break;
	}
      if (vtblprint && cp_is_vtbl_ptr_type (type))
	{
	  /* Print the unmangled name if desired.  */
	  /* Print vtable entry - we only get here if we ARE using
	     -fvtable_thunks.  (Otherwise, look under TYPE_CODE_STRUCT.) */
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + embedded_offset, type);
	  print_function_pointer_address (addr, stream);
	  break;
	}
      elttype = check_typedef (TYPE_TARGET_TYPE (type));
      if (TYPE_CODE (elttype) == TYPE_CODE_METHOD)
	{
	  cp_print_class_method (valaddr + embedded_offset, type, stream);
	}
      else if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER)
	{
	  cp_print_class_member (valaddr + embedded_offset,
				 TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type)),
				 stream, "&");
	}
      else
	{
	  addr = unpack_pointer (type, valaddr + embedded_offset);
	print_unpacked_pointer:

	  if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
	    {
	      /* Try to print what function it points to.  */
	      print_function_pointer_address (addr, stream);
	      /* Return value is irrelevant except for string pointers.  */
	      return (0);
	    }

	  if (addressprint && format != 's')
	    {
	      print_address_numeric (addr, 1, stream);
	    }

	  /* For a pointer to char or unsigned char, also print the string
	     pointed to, unless pointer is null.  */
	  /* FIXME: need to handle wchar_t here... */

	  if (TYPE_LENGTH (elttype) == 1
	      && TYPE_CODE (elttype) == TYPE_CODE_INT
	      && (format == 0 || format == 's')
	      && addr != 0)
	    {
	      i = val_print_string (addr, -1, TYPE_LENGTH (elttype), stream);
	    }
	  else if (cp_is_vtbl_member (type))
	    {
	      /* print vtbl's nicely */
	      CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset);

	      struct minimal_symbol *msymbol =
	      lookup_minimal_symbol_by_pc (vt_address);
	      if ((msymbol != NULL) &&
		  (vt_address == SYMBOL_VALUE_ADDRESS (msymbol)))
		{
		  fputs_filtered (" <", stream);
		  fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream);
		  fputs_filtered (">", stream);
		}
	      if (vt_address && vtblprint)
		{
		  struct value *vt_val;
		  struct symbol *wsym = (struct symbol *) NULL;
		  struct type *wtype;
		  struct block *block = (struct block *) NULL;
		  int is_this_fld;

		  if (msymbol != NULL)
		    wsym = lookup_symbol (DEPRECATED_SYMBOL_NAME (msymbol), block,
					  VAR_DOMAIN, &is_this_fld, NULL);

		  if (wsym)
		    {
		      wtype = SYMBOL_TYPE (wsym);
		    }
		  else
		    {
		      wtype = TYPE_TARGET_TYPE (type);
		    }
		  vt_val = value_at (wtype, vt_address);
		  val_print (value_type (vt_val), value_contents (vt_val), 0,
			     VALUE_ADDRESS (vt_val), stream, format,
			     deref_ref, recurse + 1, pretty);
		  if (pretty)
		    {
		      fprintf_filtered (stream, "\n");
		      print_spaces_filtered (2 + 2 * recurse, stream);
		    }
		}
	    }

	  /* Return number of characters printed, including the terminating
	     '\0' if we reached the end.  val_print_string takes care including
	     the terminating '\0' if necessary.  */
	  return i;
	}
      break;

    case TYPE_CODE_MEMBER:
      error (_("not implemented: member type in c_val_print"));
      break;

    case TYPE_CODE_REF:
      elttype = check_typedef (TYPE_TARGET_TYPE (type));
      if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER)
	{
	  cp_print_class_member (valaddr + embedded_offset,
				 TYPE_DOMAIN_TYPE (elttype),
				 stream, "");
	  break;
	}
      if (addressprint)
	{
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + embedded_offset, type);
	  fprintf_filtered (stream, "@");
	  print_address_numeric (addr, 1, stream);
	  if (deref_ref)
	    fputs_filtered (": ", stream);
	}
      /* De-reference the reference.  */
      if (deref_ref)
	{
	  if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
	    {
	      struct value *deref_val =
	      value_at
	      (TYPE_TARGET_TYPE (type),
	       unpack_pointer (lookup_pointer_type (builtin_type_void),
			       valaddr + embedded_offset));
	      val_print (value_type (deref_val),
			 value_contents (deref_val),
			 0,
			 VALUE_ADDRESS (deref_val),
			 stream,
			 format,
			 deref_ref,
			 recurse,
			 pretty);
	    }
	  else
	    fputs_filtered ("???", stream);
	}
      break;

    case TYPE_CODE_UNION:
      if (recurse && !unionprint)
	{
	  fprintf_filtered (stream, "{...}");
	  break;
	}
      /* Fall through.  */
    case TYPE_CODE_STRUCT:
      /*FIXME: Abstract this away */
      if (vtblprint && cp_is_vtbl_ptr_type (type))
	{
	  /* Print the unmangled name if desired.  */
	  /* Print vtable entry - we only get here if NOT using
	     -fvtable_thunks.  (Otherwise, look under TYPE_CODE_PTR.) */
	  int offset = (embedded_offset +
			TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8);
	  struct type *field_type = TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET);
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + offset, field_type);

	  print_function_pointer_address (addr, stream);
	}
      else
	cp_print_value_fields (type, type, valaddr, embedded_offset, address, stream, format,
			       recurse, pretty, NULL, 0);
      break;

    case TYPE_CODE_ENUM:
      if (format)
	{
	  print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
	  break;
	}
      len = TYPE_NFIELDS (type);
      val = unpack_long (type, valaddr + embedded_offset);
      for (i = 0; i < len; i++)
	{
	  QUIT;
	  if (val == TYPE_FIELD_BITPOS (type, i))
	    {
	      break;
	    }
	}
      if (i < len)
	{
	  fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
	}
      else
	{
	  print_longest (stream, 'd', 0, val);
	}
      break;

    case TYPE_CODE_FUNC:
      if (format)
	{
	  print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
	  break;
	}
      /* FIXME, we should consider, at least for ANSI C language, eliminating
         the distinction made between FUNCs and POINTERs to FUNCs.  */
      fprintf_filtered (stream, "{");
      type_print (type, "", stream, -1);
      fprintf_filtered (stream, "} ");
      /* Try to print what function it points to, and its address.  */
      print_address_demangle (address, stream, demangle);
      break;

    case TYPE_CODE_BOOL:
      format = format ? format : output_format;
      if (format)
	print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
      else
	{
	  val = unpack_long (type, valaddr + embedded_offset);
	  if (val == 0)
	    fputs_filtered ("false", stream);
	  else if (val == 1)
	    fputs_filtered ("true", stream);
	  else
	    print_longest (stream, 'd', 0, val);
	}
      break;

    case TYPE_CODE_RANGE:
      /* FIXME: create_range_type does not set the unsigned bit in a
         range type (I think it probably should copy it from the target
         type), so we won't print values which are too large to
         fit in a signed integer correctly.  */
      /* FIXME: Doesn't handle ranges of enums correctly.  (Can't just
         print with the target type, though, because the size of our type
         and the target type might differ).  */
      /* FALLTHROUGH */

    case TYPE_CODE_INT:
      format = format ? format : output_format;
      if (format)
	{
	  print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
	}
      else
	{
	  val_print_type_code_int (type, valaddr + embedded_offset, stream);
	  /* C and C++ has no single byte int type, char is used instead.
	     Since we don't know whether the value is really intended to
	     be used as an integer or a character, print the character
	     equivalent as well. */
	  if (TYPE_LENGTH (type) == 1)
	    {
	      fputs_filtered (" ", stream);
	      LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr + embedded_offset),
			     stream);
	    }
	}
      break;

    case TYPE_CODE_CHAR:
      format = format ? format : output_format;
      if (format)
	{
	  print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
	}
      else
	{
	  val = unpack_long (type, valaddr + embedded_offset);
	  if (TYPE_UNSIGNED (type))
	    fprintf_filtered (stream, "%u", (unsigned int) val);
	  else
	    fprintf_filtered (stream, "%d", (int) val);
	  fputs_filtered (" ", stream);
	  LA_PRINT_CHAR ((unsigned char) val, stream);
	}
      break;

    case TYPE_CODE_FLT:
      if (format)
	{
	  print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
	}
      else
	{
	  print_floating (valaddr + embedded_offset, type, stream);
	}
      break;

    case TYPE_CODE_METHOD:
      {
	struct value *v = value_at (type, address);
	cp_print_class_method (value_contents (value_addr (v)),
			       lookup_pointer_type (type), stream);
	break;
      }

    case TYPE_CODE_VOID:
      fprintf_filtered (stream, "void");
      break;

    case TYPE_CODE_ERROR:
      fprintf_filtered (stream, _("<error type>"));
      break;

    case TYPE_CODE_UNDEF:
      /* This happens (without TYPE_FLAG_STUB set) on systems which don't use
         dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
         and no complete type for struct foo in that file.  */
      fprintf_filtered (stream, _("<incomplete type>"));
      break;

    case TYPE_CODE_COMPLEX:
      if (format)
	print_scalar_formatted (valaddr + embedded_offset,
				TYPE_TARGET_TYPE (type),
				format, 0, stream);
      else
	print_floating (valaddr + embedded_offset, TYPE_TARGET_TYPE (type),
			stream);
      fprintf_filtered (stream, " + ");
      if (format)
	print_scalar_formatted (valaddr + embedded_offset
				+ TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
				TYPE_TARGET_TYPE (type),
				format, 0, stream);
      else
	print_floating (valaddr + embedded_offset
			+ TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
			TYPE_TARGET_TYPE (type),
			stream);
      fprintf_filtered (stream, " * I");
      break;

    default:
      error (_("Invalid C/C++ type code %d in symbol table."), TYPE_CODE (type));
    }
  gdb_flush (stream);
  return (0);
}
\f
int
c_value_print (struct value *val, struct ui_file *stream, int format,
	       enum val_prettyprint pretty)
{
  struct type *type = value_type (val);
  struct type *real_type;
  int full, top, using_enc;

  /* If it is a pointer, indicate what it points to.

     Print type also if it is a reference.

     C++: if it is a member pointer, we will take care
     of that when we print it.  */
  if (TYPE_CODE (type) == TYPE_CODE_PTR ||
      TYPE_CODE (type) == TYPE_CODE_REF)
    {
      /* Hack:  remove (char *) for char strings.  Their
         type is indicated by the quoted string anyway. */
      if (TYPE_CODE (type) == TYPE_CODE_PTR &&
	  TYPE_NAME (type) == NULL &&
	  TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL &&
	  strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0)
	{
	  /* Print nothing */
	}
      else if (objectprint && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS))
	{

	  if (TYPE_CODE(type) == TYPE_CODE_REF)
	    {
	      /* Copy value, change to pointer, so we don't get an
	       * error about a non-pointer type in value_rtti_target_type
	       */
	      struct value *temparg;
	      temparg=value_copy(val);
	      deprecated_set_value_type (temparg, lookup_pointer_type (TYPE_TARGET_TYPE(type)));
	      val=temparg;
	    }
	  /* Pointer to class, check real type of object */
	  fprintf_filtered (stream, "(");
          real_type = value_rtti_target_type (val, &full, &top, &using_enc);
          if (real_type)
	    {
	      /* RTTI entry found */
              if (TYPE_CODE (type) == TYPE_CODE_PTR)
                {
                  /* create a pointer type pointing to the real type */
                  type = lookup_pointer_type (real_type);
                }
              else
                {
                  /* create a reference type referencing the real type */
                  type = lookup_reference_type (real_type);
                }
	      /* JYG: Need to adjust pointer value. */
              val->aligner.contents[0] -= top;

              /* Note: When we look up RTTI entries, we don't get any 
                 information on const or volatile attributes */
            }
          type_print (type, "", stream, -1);
	  fprintf_filtered (stream, ") ");
	}
      else
	{
	  /* normal case */
	  fprintf_filtered (stream, "(");
	  type_print (type, "", stream, -1);
	  fprintf_filtered (stream, ") ");
	}
    }
  if (objectprint && (TYPE_CODE (value_type (val)) == TYPE_CODE_CLASS))
    {
      /* Attempt to determine real type of object */
      real_type = value_rtti_type (val, &full, &top, &using_enc);
      if (real_type)
	{
	  /* We have RTTI information, so use it */
	  val = value_full_object (val, real_type, full, top, using_enc);
	  fprintf_filtered (stream, "(%s%s) ",
			    TYPE_NAME (real_type),
			    full ? "" : _(" [incomplete object]"));
	  /* Print out object: enclosing type is same as real_type if full */
	  return val_print (value_enclosing_type (val),
			    value_contents_all (val), 0,
			    VALUE_ADDRESS (val), stream, format, 1, 0, pretty);
          /* Note: When we look up RTTI entries, we don't get any information on
             const or volatile attributes */
	}
      else if (type != value_enclosing_type (val))
	{
	  /* No RTTI information, so let's do our best */
	  fprintf_filtered (stream, "(%s ?) ",
			    TYPE_NAME (value_enclosing_type (val)));
	  return val_print (value_enclosing_type (val),
			    value_contents_all (val), 0,
			    VALUE_ADDRESS (val), stream, format, 1, 0, pretty);
	}
      /* Otherwise, we end up at the return outside this "if" */
    }

  return val_print (type, value_contents_all (val),
		    value_embedded_offset (val),
		    VALUE_ADDRESS (val) + value_offset (val),
		    stream, format, 1, 0, pretty);
}
Commit	Line	Data
c906108c	1	/* Support for printing C values for GDB, the GNU debugger.
1bac305b AC	2
1bac305b AC	3	Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996,
4754a64e AC	4	1997, 1998, 1999, 2000, 2001, 2003, 2005 Free Software Foundation,
4754a64e AC	5	Inc.
c906108c	6
c5aa993b	7	This file is part of GDB.
c906108c	8
c5aa993b JM	9	This program is free software; you can redistribute it and/or modify
	10	it under the terms of the GNU General Public License as published by
	11	the Free Software Foundation; either version 2 of the License, or
	12	(at your option) any later version.
c906108c	13
c5aa993b JM	14	This program is distributed in the hope that it will be useful,
	15	but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	GNU General Public License for more details.
c906108c	18
c5aa993b JM	19	You should have received a copy of the GNU General Public License
	20	along with this program; if not, write to the Free Software
	21	Foundation, Inc., 59 Temple Place - Suite 330,
	22	Boston, MA 02111-1307, USA. */
c906108c SS	23
c906108c SS	24	#include "defs.h"
309367d4	25	#include "gdb_string.h"
c906108c SS	26	#include "symtab.h"
	27	#include "gdbtypes.h"
	28	#include "expression.h"
	29	#include "value.h"
c906108c SS	30	#include "valprint.h"
	31	#include "language.h"
	32	#include "c-lang.h"
015a42b4	33	#include "cp-abi.h"
e2d0e7eb	34	#include "target.h"
c906108c	35	\f
c5aa993b	36
6e778545 PS	37	/* Print function pointer with inferior address ADDRESS onto stdio
	38	stream STREAM. */
	39
	40	static void
	41	print_function_pointer_address (CORE_ADDR address, struct ui_file *stream)
	42	{
e2d0e7eb AC	43	CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch,
	44	address,
	45	&current_target);
6e778545 PS	46
	47	/* If the function pointer is represented by a description, print the
	48	address of the description. */
	49	if (addressprint && func_addr != address)
	50	{
	51	fputs_filtered ("@", stream);
	52	print_address_numeric (address, 1, stream);
	53	fputs_filtered (": ", stream);
	54	}
	55	print_address_demangle (func_addr, stream, demangle);
	56	}
	57
	58
c906108c SS	59	/* Print data of type TYPE located at VALADDR (within GDB), which came from
	60	the inferior at address ADDRESS, onto stdio stream STREAM according to
	61	FORMAT (a letter or 0 for natural format). The data at VALADDR is in
	62	target byte order.
	63
	64	If the data are a string pointer, returns the number of string characters
	65	printed.
	66
	67	If DEREF_REF is nonzero, then dereference references, otherwise just print
	68	them like pointers.
	69
	70	The PRETTY parameter controls prettyprinting. */
	71
	72	int
a2bd3dcd	73	c_val_print (struct type type, const bfd_byte valaddr, int embedded_offset,
fba45db2 KB	74	CORE_ADDR address, struct ui_file *stream, int format,
fba45db2 KB	75	int deref_ref, int recurse, enum val_prettyprint pretty)
c906108c	76	{
52f0bd74	77	unsigned int i = 0; /* Number of characters printed */
c906108c SS	78	unsigned len;
	79	struct type *elttype;
	80	unsigned eltlen;
	81	LONGEST val;
	82	CORE_ADDR addr;
	83
	84	CHECK_TYPEDEF (type);
	85	switch (TYPE_CODE (type))
	86	{
	87	case TYPE_CODE_ARRAY:
	88	elttype = check_typedef (TYPE_TARGET_TYPE (type));
	89	if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
	90	{
	91	eltlen = TYPE_LENGTH (elttype);
	92	len = TYPE_LENGTH (type) / eltlen;
	93	if (prettyprint_arrays)
	94	{
	95	print_spaces_filtered (2 + 2 * recurse, stream);
	96	}
	97	/* For an array of chars, print with string syntax. */
	98	if (eltlen == 1 &&
	99	((TYPE_CODE (elttype) == TYPE_CODE_INT)
	100	\|\| ((current_language->la_language == language_m2)
	101	&& (TYPE_CODE (elttype) == TYPE_CODE_CHAR)))
	102	&& (format == 0 \|\| format == 's'))
	103	{
	104	/* If requested, look for the first null char and only print
c5aa993b	105	elements up to it. */
c906108c SS	106	if (stop_print_at_null)
c906108c SS	107	{
745b8ca0	108	unsigned int temp_len;
c5aa993b	109
c906108c SS	110	/* Look for a NULL char. */
	111	for (temp_len = 0;
	112	(valaddr + embedded_offset)[temp_len]
	113	&& temp_len < len && temp_len < print_max;
	114	temp_len++);
	115	len = temp_len;
	116	}
c5aa993b	117
c906108c SS	118	LA_PRINT_STRING (stream, valaddr + embedded_offset, len, eltlen, 0);
	119	i = len;
	120	}
	121	else
	122	{
	123	fprintf_filtered (stream, "{");
	124	/* If this is a virtual function table, print the 0th
c5aa993b	125	entry specially, and the rest of the members normally. */
c906108c SS	126	if (cp_is_vtbl_ptr_type (elttype))
	127	{
	128	i = 1;
3d263c1d	129	fprintf_filtered (stream, _("%d vtable entries"), len - 1);
c906108c SS	130	}
	131	else
	132	{
	133	i = 0;
	134	}
	135	val_print_array_elements (type, valaddr + embedded_offset, address, stream,
c5aa993b	136	format, deref_ref, recurse, pretty, i);
c906108c SS	137	fprintf_filtered (stream, "}");
	138	}
	139	break;
	140	}
	141	/* Array of unspecified length: treat like pointer to first elt. */
	142	addr = address;
	143	goto print_unpacked_pointer;
	144
	145	case TYPE_CODE_PTR:
	146	if (format && format != 's')
	147	{
	148	print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
	149	break;
	150	}
c5aa993b	151	if (vtblprint && cp_is_vtbl_ptr_type (type))
c906108c	152	{
c5aa993b	153	/* Print the unmangled name if desired. */
c906108c SS	154	/* Print vtable entry - we only get here if we ARE using
c906108c SS	155	-fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */
4478b372 JB	156	CORE_ADDR addr
4478b372 JB	157	= extract_typed_address (valaddr + embedded_offset, type);
6e778545	158	print_function_pointer_address (addr, stream);
c906108c SS	159	break;
	160	}
	161	elttype = check_typedef (TYPE_TARGET_TYPE (type));
	162	if (TYPE_CODE (elttype) == TYPE_CODE_METHOD)
	163	{
	164	cp_print_class_method (valaddr + embedded_offset, type, stream);
	165	}
	166	else if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER)
	167	{
	168	cp_print_class_member (valaddr + embedded_offset,
	169	TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type)),
	170	stream, "&");
	171	}
	172	else
	173	{
	174	addr = unpack_pointer (type, valaddr + embedded_offset);
	175	print_unpacked_pointer:
c906108c SS	176
	177	if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
	178	{
	179	/* Try to print what function it points to. */
6e778545	180	print_function_pointer_address (addr, stream);
c906108c SS	181	/* Return value is irrelevant except for string pointers. */
	182	return (0);
	183	}
	184
	185	if (addressprint && format != 's')
	186	{
	187	print_address_numeric (addr, 1, stream);
	188	}
	189
	190	/* For a pointer to char or unsigned char, also print the string
	191	pointed to, unless pointer is null. */
	192	/* FIXME: need to handle wchar_t here... */
	193
	194	if (TYPE_LENGTH (elttype) == 1
	195	&& TYPE_CODE (elttype) == TYPE_CODE_INT
	196	&& (format == 0 \|\| format == 's')
	197	&& addr != 0)
	198	{
	199	i = val_print_string (addr, -1, TYPE_LENGTH (elttype), stream);
	200	}
c5aa993b JM	201	else if (cp_is_vtbl_member (type))
c5aa993b JM	202	{
c906108c SS	203	/* print vtbl's nicely */
	204	CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset);
	205
	206	struct minimal_symbol *msymbol =
c5aa993b	207	lookup_minimal_symbol_by_pc (vt_address);
c906108c SS	208	if ((msymbol != NULL) &&
	209	(vt_address == SYMBOL_VALUE_ADDRESS (msymbol)))
	210	{
	211	fputs_filtered (" <", stream);
de5ad195	212	fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream);
c906108c SS	213	fputs_filtered (">", stream);
	214	}
	215	if (vt_address && vtblprint)
c5aa993b	216	{
6943961c	217	struct value *vt_val;
c5aa993b JM	218	struct symbol wsym = (struct symbol ) NULL;
c5aa993b JM	219	struct type *wtype;
c5aa993b	220	struct block block = (struct block ) NULL;
c906108c SS	221	int is_this_fld;
	222
	223	if (msymbol != NULL)
22abf04a	224	wsym = lookup_symbol (DEPRECATED_SYMBOL_NAME (msymbol), block,
cdef89d0	225	VAR_DOMAIN, &is_this_fld, NULL);
c5aa993b	226
c906108c SS	227	if (wsym)
c906108c SS	228	{
c5aa993b	229	wtype = SYMBOL_TYPE (wsym);
c906108c SS	230	}
	231	else
	232	{
c5aa993b	233	wtype = TYPE_TARGET_TYPE (type);
c906108c	234	}
00a4c844	235	vt_val = value_at (wtype, vt_address);
0fd88904	236	val_print (value_type (vt_val), value_contents (vt_val), 0,
c906108c SS	237	VALUE_ADDRESS (vt_val), stream, format,
	238	deref_ref, recurse + 1, pretty);
	239	if (pretty)
	240	{
	241	fprintf_filtered (stream, "\n");
	242	print_spaces_filtered (2 + 2 * recurse, stream);
	243	}
c5aa993b JM	244	}
c5aa993b JM	245	}
c906108c SS	246
	247	/* Return number of characters printed, including the terminating
	248	'\0' if we reached the end. val_print_string takes care including
	249	the terminating '\0' if necessary. */
	250	return i;
	251	}
	252	break;
	253
	254	case TYPE_CODE_MEMBER:
3d263c1d	255	error (_("not implemented: member type in c_val_print"));
c906108c SS	256	break;
	257
	258	case TYPE_CODE_REF:
	259	elttype = check_typedef (TYPE_TARGET_TYPE (type));
	260	if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER)
c5aa993b	261	{
c906108c SS	262	cp_print_class_member (valaddr + embedded_offset,
	263	TYPE_DOMAIN_TYPE (elttype),
	264	stream, "");
	265	break;
	266	}
	267	if (addressprint)
c5aa993b	268	{
4478b372 JB	269	CORE_ADDR addr
4478b372 JB	270	= extract_typed_address (valaddr + embedded_offset, type);
c906108c	271	fprintf_filtered (stream, "@");
4478b372	272	print_address_numeric (addr, 1, stream);
c906108c SS	273	if (deref_ref)
c906108c SS	274	fputs_filtered (": ", stream);
c5aa993b	275	}
c906108c SS	276	/* De-reference the reference. */
	277	if (deref_ref)
	278	{
	279	if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
	280	{
6943961c	281	struct value *deref_val =
c5aa993b JM	282	value_at
	283	(TYPE_TARGET_TYPE (type),
	284	unpack_pointer (lookup_pointer_type (builtin_type_void),
00a4c844	285	valaddr + embedded_offset));
df407dfe	286	val_print (value_type (deref_val),
0fd88904	287	value_contents (deref_val),
c5aa993b JM	288	0,
	289	VALUE_ADDRESS (deref_val),
	290	stream,
	291	format,
	292	deref_ref,
	293	recurse,
	294	pretty);
c906108c SS	295	}
	296	else
	297	fputs_filtered ("???", stream);
	298	}
	299	break;
	300
	301	case TYPE_CODE_UNION:
	302	if (recurse && !unionprint)
	303	{
	304	fprintf_filtered (stream, "{...}");
	305	break;
	306	}
	307	/* Fall through. */
	308	case TYPE_CODE_STRUCT:
015a42b4	309	/FIXME: Abstract this away /
c5aa993b	310	if (vtblprint && cp_is_vtbl_ptr_type (type))
c906108c	311	{
c5aa993b	312	/* Print the unmangled name if desired. */
c906108c SS	313	/* Print vtable entry - we only get here if NOT using
c906108c SS	314	-fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */
4478b372 JB	315	int offset = (embedded_offset +
	316	TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8);
	317	struct type *field_type = TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET);
	318	CORE_ADDR addr
	319	= extract_typed_address (valaddr + offset, field_type);
	320
6e778545	321	print_function_pointer_address (addr, stream);
c906108c SS	322	}
	323	else
	324	cp_print_value_fields (type, type, valaddr, embedded_offset, address, stream, format,
	325	recurse, pretty, NULL, 0);
	326	break;
	327
	328	case TYPE_CODE_ENUM:
	329	if (format)
	330	{
	331	print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
	332	break;
	333	}
	334	len = TYPE_NFIELDS (type);
	335	val = unpack_long (type, valaddr + embedded_offset);
	336	for (i = 0; i < len; i++)
	337	{
	338	QUIT;
	339	if (val == TYPE_FIELD_BITPOS (type, i))
	340	{
	341	break;
	342	}
	343	}
	344	if (i < len)
	345	{
	346	fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
	347	}
	348	else
	349	{
	350	print_longest (stream, 'd', 0, val);
	351	}
	352	break;
	353
	354	case TYPE_CODE_FUNC:
	355	if (format)
	356	{
	357	print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
	358	break;
	359	}
	360	/* FIXME, we should consider, at least for ANSI C language, eliminating
c5aa993b	361	the distinction made between FUNCs and POINTERs to FUNCs. */
c906108c SS	362	fprintf_filtered (stream, "{");
	363	type_print (type, "", stream, -1);
	364	fprintf_filtered (stream, "} ");
	365	/* Try to print what function it points to, and its address. */
	366	print_address_demangle (address, stream, demangle);
	367	break;
	368
	369	case TYPE_CODE_BOOL:
	370	format = format ? format : output_format;
	371	if (format)
	372	print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
	373	else
	374	{
	375	val = unpack_long (type, valaddr + embedded_offset);
	376	if (val == 0)
	377	fputs_filtered ("false", stream);
	378	else if (val == 1)
	379	fputs_filtered ("true", stream);
	380	else
	381	print_longest (stream, 'd', 0, val);
	382	}
	383	break;
	384
	385	case TYPE_CODE_RANGE:
	386	/* FIXME: create_range_type does not set the unsigned bit in a
c5aa993b JM	387	range type (I think it probably should copy it from the target
	388	type), so we won't print values which are too large to
	389	fit in a signed integer correctly. */
c906108c	390	/* FIXME: Doesn't handle ranges of enums correctly. (Can't just
c5aa993b JM	391	print with the target type, though, because the size of our type
c5aa993b JM	392	and the target type might differ). */
c906108c SS	393	/* FALLTHROUGH */
	394
	395	case TYPE_CODE_INT:
	396	format = format ? format : output_format;
	397	if (format)
	398	{
	399	print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
	400	}
	401	else
	402	{
	403	val_print_type_code_int (type, valaddr + embedded_offset, stream);
	404	/* C and C++ has no single byte int type, char is used instead.
	405	Since we don't know whether the value is really intended to
	406	be used as an integer or a character, print the character
	407	equivalent as well. */
	408	if (TYPE_LENGTH (type) == 1)
	409	{
	410	fputs_filtered (" ", stream);
	411	LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr + embedded_offset),
	412	stream);
	413	}
	414	}
	415	break;
	416
	417	case TYPE_CODE_CHAR:
	418	format = format ? format : output_format;
	419	if (format)
	420	{
	421	print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
	422	}
	423	else
	424	{
96baa820 JM	425	val = unpack_long (type, valaddr + embedded_offset);
	426	if (TYPE_UNSIGNED (type))
	427	fprintf_filtered (stream, "%u", (unsigned int) val);
	428	else
	429	fprintf_filtered (stream, "%d", (int) val);
c906108c	430	fputs_filtered (" ", stream);
96baa820	431	LA_PRINT_CHAR ((unsigned char) val, stream);
c906108c SS	432	}
	433	break;
	434
	435	case TYPE_CODE_FLT:
	436	if (format)
	437	{
	438	print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
	439	}
	440	else
	441	{
	442	print_floating (valaddr + embedded_offset, type, stream);
	443	}
	444	break;
	445
	446	case TYPE_CODE_METHOD:
acf5ed49	447	{
00a4c844	448	struct value *v = value_at (type, address);
0fd88904	449	cp_print_class_method (value_contents (value_addr (v)),
acf5ed49 DJ	450	lookup_pointer_type (type), stream);
	451	break;
	452	}
c906108c SS	453
	454	case TYPE_CODE_VOID:
	455	fprintf_filtered (stream, "void");
	456	break;
	457
	458	case TYPE_CODE_ERROR:
3d263c1d	459	fprintf_filtered (stream, _("<error type>"));
c906108c SS	460	break;
	461
	462	case TYPE_CODE_UNDEF:
	463	/* This happens (without TYPE_FLAG_STUB set) on systems which don't use
c5aa993b JM	464	dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
c5aa993b JM	465	and no complete type for struct foo in that file. */
3d263c1d	466	fprintf_filtered (stream, _("<incomplete type>"));
c906108c SS	467	break;
c906108c SS	468
fca9e603 DJ	469	case TYPE_CODE_COMPLEX:
	470	if (format)
	471	print_scalar_formatted (valaddr + embedded_offset,
	472	TYPE_TARGET_TYPE (type),
	473	format, 0, stream);
	474	else
	475	print_floating (valaddr + embedded_offset, TYPE_TARGET_TYPE (type),
	476	stream);
	477	fprintf_filtered (stream, " + ");
	478	if (format)
	479	print_scalar_formatted (valaddr + embedded_offset
	480	+ TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
	481	TYPE_TARGET_TYPE (type),
	482	format, 0, stream);
	483	else
	484	print_floating (valaddr + embedded_offset
	485	+ TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
	486	TYPE_TARGET_TYPE (type),
	487	stream);
	488	fprintf_filtered (stream, " * I");
	489	break;
	490
c906108c	491	default:
3d263c1d	492	error (_("Invalid C/C++ type code %d in symbol table."), TYPE_CODE (type));
c906108c SS	493	}
	494	gdb_flush (stream);
	495	return (0);
	496	}
	497	\f
	498	int
6943961c	499	c_value_print (struct value val, struct ui_file stream, int format,
fba45db2	500	enum val_prettyprint pretty)
c906108c	501	{
df407dfe	502	struct type *type = value_type (val);
c5aa993b	503	struct type *real_type;
c906108c	504	int full, top, using_enc;
c5aa993b	505
c906108c SS	506	/* If it is a pointer, indicate what it points to.
	507
	508	Print type also if it is a reference.
	509
	510	C++: if it is a member pointer, we will take care
	511	of that when we print it. */
	512	if (TYPE_CODE (type) == TYPE_CODE_PTR \|\|
	513	TYPE_CODE (type) == TYPE_CODE_REF)
	514	{
	515	/* Hack: remove (char *) for char strings. Their
c5aa993b	516	type is indicated by the quoted string anyway. */
c906108c SS	517	if (TYPE_CODE (type) == TYPE_CODE_PTR &&
	518	TYPE_NAME (type) == NULL &&
	519	TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL &&
bde58177	520	strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0)
c906108c SS	521	{
	522	/* Print nothing */
	523	}
	524	else if (objectprint && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS))
c5aa993b	525	{
070ad9f0 DB	526
	527	if (TYPE_CODE(type) == TYPE_CODE_REF)
	528	{
	529	/* Copy value, change to pointer, so we don't get an
	530	* error about a non-pointer type in value_rtti_target_type
	531	*/
6943961c	532	struct value *temparg;
070ad9f0	533	temparg=value_copy(val);
04624583	534	deprecated_set_value_type (temparg, lookup_pointer_type (TYPE_TARGET_TYPE(type)));
070ad9f0 DB	535	val=temparg;
070ad9f0 DB	536	}
c5aa993b	537	/* Pointer to class, check real type of object */
c906108c	538	fprintf_filtered (stream, "(");
c4093a6a JM	539	real_type = value_rtti_target_type (val, &full, &top, &using_enc);
c4093a6a JM	540	if (real_type)
c5aa993b JM	541	{
c5aa993b JM	542	/* RTTI entry found */
c4093a6a JM	543	if (TYPE_CODE (type) == TYPE_CODE_PTR)
	544	{
	545	/* create a pointer type pointing to the real type */
	546	type = lookup_pointer_type (real_type);
	547	}
	548	else
	549	{
	550	/* create a reference type referencing the real type */
	551	type = lookup_reference_type (real_type);
	552	}
070ad9f0 DB	553	/* JYG: Need to adjust pointer value. */
	554	val->aligner.contents[0] -= top;
	555
c4093a6a JM	556	/* Note: When we look up RTTI entries, we don't get any
	557	information on const or volatile attributes */
	558	}
	559	type_print (type, "", stream, -1);
c906108c	560	fprintf_filtered (stream, ") ");
c5aa993b	561	}
c906108c SS	562	else
c906108c SS	563	{
c5aa993b	564	/* normal case */
c906108c SS	565	fprintf_filtered (stream, "(");
	566	type_print (type, "", stream, -1);
	567	fprintf_filtered (stream, ") ");
	568	}
	569	}
df407dfe	570	if (objectprint && (TYPE_CODE (value_type (val)) == TYPE_CODE_CLASS))
c906108c SS	571	{
	572	/* Attempt to determine real type of object */
	573	real_type = value_rtti_type (val, &full, &top, &using_enc);
c5aa993b JM	574	if (real_type)
	575	{
	576	/* We have RTTI information, so use it */
	577	val = value_full_object (val, real_type, full, top, using_enc);
	578	fprintf_filtered (stream, "(%s%s) ",
	579	TYPE_NAME (real_type),
3d263c1d	580	full ? "" : _(" [incomplete object]"));
c5aa993b	581	/* Print out object: enclosing type is same as real_type if full */
46615f07 AC	582	return val_print (value_enclosing_type (val),
	583	value_contents_all (val), 0,
	584	VALUE_ADDRESS (val), stream, format, 1, 0, pretty);
c4093a6a JM	585	/* Note: When we look up RTTI entries, we don't get any information on
c4093a6a JM	586	const or volatile attributes */
c5aa993b	587	}
4754a64e	588	else if (type != value_enclosing_type (val))
c5aa993b JM	589	{
	590	/* No RTTI information, so let's do our best */
	591	fprintf_filtered (stream, "(%s ?) ",
4754a64e	592	TYPE_NAME (value_enclosing_type (val)));
46615f07 AC	593	return val_print (value_enclosing_type (val),
	594	value_contents_all (val), 0,
	595	VALUE_ADDRESS (val), stream, format, 1, 0, pretty);
c5aa993b	596	}
c906108c SS	597	/* Otherwise, we end up at the return outside this "if" */
c906108c SS	598	}
c5aa993b	599
46615f07	600	return val_print (type, value_contents_all (val),
13c3b5f5	601	value_embedded_offset (val),
df407dfe	602	VALUE_ADDRESS (val) + value_offset (val),
c906108c SS	603	stream, format, 1, 0, pretty);
c906108c SS	604	}