[deliverable/binutils-gdb.git] / gdb / m2-valprint.c

/* Support for printing Modula 2 values for GDB, the GNU debugger.

   Copyright (C) 1986, 1988, 1989, 1991, 1992, 1996, 1998, 2000, 2005, 2006,
                 2007, 2008, 2009 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 3 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, see <http://www.gnu.org/licenses/>.  */

#include "defs.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "value.h"
#include "valprint.h"
#include "language.h"
#include "typeprint.h"
#include "c-lang.h"
#include "m2-lang.h"
#include "target.h"

static int print_unpacked_pointer (struct type *type,
				   CORE_ADDR address, CORE_ADDR addr,
				   const struct value_print_options *options,
				   struct ui_file *stream);
static void
m2_print_array_contents (struct type *type, const gdb_byte *valaddr,
			 int embedded_offset, CORE_ADDR address,
			 struct ui_file *stream, int recurse,
			 const struct value_print_options *options,
			 int len);


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

static void
print_function_pointer_address (struct gdbarch *gdbarch, CORE_ADDR address,
				struct ui_file *stream, int addressprint)
{
  CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr (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);
      fputs_filtered (paddress (gdbarch, address), stream);
      fputs_filtered (": ", stream);
    }
  print_address_demangle (gdbarch, func_addr, stream, demangle);
}

/* get_long_set_bounds - assigns the bounds of the long set to low and
                         high.  */

int
get_long_set_bounds (struct type *type, LONGEST *low, LONGEST *high)
{
  int len, i;

  if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
    {
      len = TYPE_NFIELDS (type);
      i = TYPE_N_BASECLASSES (type);
      if (len == 0)
	return 0;
      *low = TYPE_LOW_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, i)));
      *high = TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type,
								 len-1)));
      return 1;
    }
  error (_("expecting long_set"));
  return 0;
}

static void
m2_print_long_set (struct type *type, const gdb_byte *valaddr,
		   int embedded_offset, CORE_ADDR address,
		   struct ui_file *stream)
{
  int empty_set        = 1;
  int element_seen     = 0;
  LONGEST previous_low = 0;
  LONGEST previous_high= 0;
  LONGEST i, low_bound, high_bound;
  LONGEST field_low, field_high;
  struct type *range;
  int len, field;
  struct type *target;
  int bitval;

  CHECK_TYPEDEF (type);

  fprintf_filtered (stream, "{");
  len = TYPE_NFIELDS (type);
  if (get_long_set_bounds (type, &low_bound, &high_bound))
    {
      field = TYPE_N_BASECLASSES (type);
      range = TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
    }
  else
    {
      fprintf_filtered (stream, " %s }", _("<unknown bounds of set>"));
      return;
    }

  target = TYPE_TARGET_TYPE (range);

  if (get_discrete_bounds (range, &field_low, &field_high) >= 0)
    {
      for (i = low_bound; i <= high_bound; i++)
	{
	  bitval = value_bit_index (TYPE_FIELD_TYPE (type, field),
				    (TYPE_FIELD_BITPOS (type, field) / 8) +
				    valaddr + embedded_offset, i);
	  if (bitval < 0)
	    error (_("bit test is out of range"));
	  else if (bitval > 0)
	    {
	      previous_high = i;
	      if (! element_seen)
		{
		  if (! empty_set)
		    fprintf_filtered (stream, ", ");
		  print_type_scalar (target, i, stream);
		  empty_set    = 0;
		  element_seen = 1;
		  previous_low = i;
		}
	    }
	  else
	    {
	      /* bit is not set */
	      if (element_seen)
		{
		  if (previous_low+1 < previous_high)
		    fprintf_filtered (stream, "..");
		  if (previous_low+1 < previous_high)
		    print_type_scalar (target, previous_high, stream);
		  element_seen = 0;
		}
	    }
	  if (i == field_high)
	    {
	      field++;
	      if (field == len)
		break;
	      range = TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
	      if (get_discrete_bounds (range, &field_low, &field_high) < 0)
		break;
	      target = TYPE_TARGET_TYPE (range);
	    }
	}
      if (element_seen)
	{
	  if (previous_low+1 < previous_high)
	    {
	      fprintf_filtered (stream, "..");
	      print_type_scalar (target, previous_high, stream);
	    }
	  element_seen = 0;
	}
      fprintf_filtered (stream, "}");
    }
}

static void
m2_print_unbounded_array (struct type *type, const gdb_byte *valaddr,
			  int embedded_offset, CORE_ADDR address,
			  struct ui_file *stream, int recurse,
			  const struct value_print_options *options)
{
  struct type *content_type;
  CORE_ADDR addr;
  LONGEST len;
  struct value *val;

  CHECK_TYPEDEF (type);
  content_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0));

  addr = unpack_pointer (TYPE_FIELD_TYPE (type, 0),
			 (TYPE_FIELD_BITPOS (type, 0) / 8) +
			 valaddr + embedded_offset);

  val = value_at_lazy (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)),
		       addr);
  len = unpack_field_as_long (type, valaddr + embedded_offset, 1);

  fprintf_filtered (stream, "{");  
  m2_print_array_contents (value_type (val), value_contents(val),
			   value_embedded_offset (val), addr, stream,
			   recurse, options, len);
  fprintf_filtered (stream, ", HIGH = %d}", (int) len);
}

static int
print_unpacked_pointer (struct type *type,
			CORE_ADDR address, CORE_ADDR addr,
			const struct value_print_options *options,
			struct ui_file *stream)
{
  struct gdbarch *gdbarch = get_type_arch (type);
  struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));

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

  if (options->addressprint && options->format != 's')
    fputs_filtered (paddress (gdbarch, address), stream);

  /* For a pointer to char or unsigned char, also print the string
     pointed to, unless pointer is null.  */

  if (TYPE_LENGTH (elttype) == 1
      && TYPE_CODE (elttype) == TYPE_CODE_INT
      && (options->format == 0 || options->format == 's')
      && addr != 0)
    return val_print_string (TYPE_TARGET_TYPE (type), addr, -1,
			     stream, options);
  
  return 0;
}

static void
print_variable_at_address (struct type *type,
			   const gdb_byte *valaddr,
			   struct ui_file *stream,
			   int recurse,
			   const struct value_print_options *options)
{
  struct gdbarch *gdbarch = get_type_arch (type);
  CORE_ADDR addr = unpack_pointer (type, valaddr);
  struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));

  fprintf_filtered (stream, "[");
  fputs_filtered (paddress (gdbarch, addr), stream);
  fprintf_filtered (stream, "] : ");
  
  if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
    {
      struct value *deref_val =
	value_at (TYPE_TARGET_TYPE (type), unpack_pointer (type, valaddr));
      common_val_print (deref_val, stream, recurse, options, current_language);
    }
  else
    fputs_filtered ("???", stream);
}


/* m2_print_array_contents - prints out the contents of an
                             array up to a max_print values.
                             It prints arrays of char as a string
                             and all other data types as comma
                             separated values.  */

static void
m2_print_array_contents (struct type *type, const gdb_byte *valaddr,
			 int embedded_offset, CORE_ADDR address,
			 struct ui_file *stream, int recurse,
			 const struct value_print_options *options,
			 int len)
{
  int eltlen;
  CHECK_TYPEDEF (type);

  if (TYPE_LENGTH (type) > 0)
    {
      eltlen = TYPE_LENGTH (type);
      if (options->prettyprint_arrays)
	print_spaces_filtered (2 + 2 * recurse, stream);
      /* For an array of chars, print with string syntax.  */
      if (eltlen == 1 &&
	  ((TYPE_CODE (type) == TYPE_CODE_INT)
	   || ((current_language->la_language == language_m2)
	       && (TYPE_CODE (type) == TYPE_CODE_CHAR)))
	  && (options->format == 0 || options->format == 's'))
	val_print_string (type, address, len+1, stream, options);
      else
	{
	  fprintf_filtered (stream, "{");
	  val_print_array_elements (type, valaddr + embedded_offset,
				    address, stream, recurse, options, 0);
	  fprintf_filtered (stream, "}");
	}
    }
}


/* Print data of type TYPE located at VALADDR (within GDB), which came from
   the inferior at address ADDRESS, onto stdio stream STREAM according to
   OPTIONS.  The data at VALADDR is in target byte order.

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

int
m2_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
	      CORE_ADDR address, struct ui_file *stream, int recurse,
	      const struct value_print_options *options)
{
  struct gdbarch *gdbarch = get_type_arch (type);
  unsigned int i = 0;	/* Number of characters printed */
  unsigned len;
  struct type *elttype;
  unsigned eltlen;
  int length_pos, length_size, string_pos;
  int char_size;
  LONGEST val;
  CORE_ADDR addr;

  CHECK_TYPEDEF (type);
  switch (TYPE_CODE (type))
    {
    case TYPE_CODE_ARRAY:
      if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
	{
	  elttype = check_typedef (TYPE_TARGET_TYPE (type));
	  eltlen = TYPE_LENGTH (elttype);
	  len = TYPE_LENGTH (type) / eltlen;
	  if (options->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)))
	      && (options->format == 0 || options->format == 's'))
	    {
	      /* If requested, look for the first null char and only print
	         elements up to it.  */
	      if (options->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 < options->print_max;
		       temp_len++);
		  len = temp_len;
		}

	      LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type),
			       valaddr + embedded_offset, len, 0,
			       options);
	      i = len;
	    }
	  else
	    {
	      fprintf_filtered (stream, "{");
	      val_print_array_elements (type, valaddr + embedded_offset,
					address, stream, recurse, options, 0);
	      fprintf_filtered (stream, "}");
	    }
	  break;
	}
      /* Array of unspecified length: treat like pointer to first elt.  */
      print_unpacked_pointer (type, address, address, options, stream);
      break;

    case TYPE_CODE_PTR:
      if (TYPE_CONST (type))
	print_variable_at_address (type, valaddr + embedded_offset,
				   stream, recurse, options);
      else if (options->format && options->format != 's')
	print_scalar_formatted (valaddr + embedded_offset, type,
				options, 0, stream);
      else
	{
	  addr = unpack_pointer (type, valaddr + embedded_offset);
	  print_unpacked_pointer (type, addr, address, options, stream);
	}
      break;

    case TYPE_CODE_REF:
      elttype = check_typedef (TYPE_TARGET_TYPE (type));
      if (options->addressprint)
	{
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + embedded_offset, type);
	  fprintf_filtered (stream, "@");
	  fputs_filtered (paddress (gdbarch, addr), stream);
	  if (options->deref_ref)
	    fputs_filtered (": ", stream);
	}
      /* De-reference the reference.  */
      if (options->deref_ref)
	{
	  if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
	    {
	      struct value *deref_val =
		value_at
		(TYPE_TARGET_TYPE (type),
		 unpack_pointer (type, valaddr + embedded_offset));
	      common_val_print (deref_val, stream, recurse, options,
				current_language);
	    }
	  else
	    fputs_filtered ("???", stream);
	}
      break;

    case TYPE_CODE_UNION:
      if (recurse && !options->unionprint)
	{
	  fprintf_filtered (stream, "{...}");
	  break;
	}
      /* Fall through.  */
    case TYPE_CODE_STRUCT:
      if (m2_is_long_set (type))
	m2_print_long_set (type, valaddr, embedded_offset, address,
			   stream);
      else if (m2_is_unbounded_array (type))
	m2_print_unbounded_array (type, valaddr, embedded_offset,
				  address, stream, recurse, options);
      else
	cp_print_value_fields (type, type, valaddr, embedded_offset,
			       address, stream, recurse, options, NULL, 0);
      break;

    case TYPE_CODE_ENUM:
      if (options->format)
	{
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  options, 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 (options->format)
	{
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  options, 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 (gdbarch, address, stream, demangle);
      break;

    case TYPE_CODE_BOOL:
      if (options->format || options->output_format)
	{
	  struct value_print_options opts = *options;
	  opts.format = (options->format ? options->format
			 : options->output_format);
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  &opts, 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
	    fprintf_filtered (stream, "%ld)", (long int) val);
	}
      break;

    case TYPE_CODE_RANGE:
      if (TYPE_LENGTH (type) == TYPE_LENGTH (TYPE_TARGET_TYPE (type)))
	{
	  m2_val_print (TYPE_TARGET_TYPE (type), valaddr, embedded_offset,
			address, stream, recurse, options);
	  break;
	}
      /* 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:
      if (options->format || options->output_format)
	{
	  struct value_print_options opts = *options;
	  opts.format = (options->format ? options->format
			 : options->output_format);
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  &opts, 0, stream);
	}
      else
	val_print_type_code_int (type, valaddr + embedded_offset, stream);
      break;

    case TYPE_CODE_CHAR:
      if (options->format || options->output_format)
	{
	  struct value_print_options opts = *options;
	  opts.format = (options->format ? options->format
			 : options->output_format);
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  &opts, 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, type, stream);
	}
      break;

    case TYPE_CODE_FLT:
      if (options->format)
	print_scalar_formatted (valaddr + embedded_offset, type,
				options, 0, stream);
      else
	print_floating (valaddr + embedded_offset, type, stream);
      break;

    case TYPE_CODE_METHOD:
      break;

    case TYPE_CODE_BITSTRING:
    case TYPE_CODE_SET:
      elttype = TYPE_INDEX_TYPE (type);
      CHECK_TYPEDEF (elttype);
      if (TYPE_STUB (elttype))
	{
	  fprintf_filtered (stream, _("<incomplete type>"));
	  gdb_flush (stream);
	  break;
	}
      else
	{
	  struct type *range = elttype;
	  LONGEST low_bound, high_bound;
	  int i;
	  int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING;
	  int need_comma = 0;

	  if (is_bitstring)
	    fputs_filtered ("B'", stream);
	  else
	    fputs_filtered ("{", stream);

	  i = get_discrete_bounds (range, &low_bound, &high_bound);
	maybe_bad_bstring:
	  if (i < 0)
	    {
	      fputs_filtered (_("<error value>"), stream);
	      goto done;
	    }

	  for (i = low_bound; i <= high_bound; i++)
	    {
	      int element = value_bit_index (type, valaddr + embedded_offset,
					     i);
	      if (element < 0)
		{
		  i = element;
		  goto maybe_bad_bstring;
		}
	      if (is_bitstring)
		fprintf_filtered (stream, "%d", element);
	      else if (element)
		{
		  if (need_comma)
		    fputs_filtered (", ", stream);
		  print_type_scalar (range, i, stream);
		  need_comma = 1;

		  if (i + 1 <= high_bound
		      && value_bit_index (type, valaddr + embedded_offset,
					  ++i))
		    {
		      int j = i;
		      fputs_filtered ("..", stream);
		      while (i + 1 <= high_bound
			     && value_bit_index (type,
						 valaddr + embedded_offset,
						 ++i))
			j = i;
		      print_type_scalar (range, j, stream);
		    }
		}
	    }
	done:
	  if (is_bitstring)
	    fputs_filtered ("'", stream);
	  else
	    fputs_filtered ("}", 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;

    default:
      error (_("Invalid m2 type code %d in symbol table."), TYPE_CODE (type));
    }
  gdb_flush (stream);
  return (0);
}
Commit	Line	Data
c906108c	1	/* Support for printing Modula 2 values for GDB, the GNU debugger.
a8d6eb4a	2
6aba47ca	3	Copyright (C) 1986, 1988, 1989, 1991, 1992, 1996, 1998, 2000, 2005, 2006,
0fb0cc75	4	2007, 2008, 2009 Free Software Foundation, Inc.
c906108c	5
c5aa993b	6	This file is part of GDB.
c906108c	7
c5aa993b JM	8	This program is free software; you can redistribute it and/or modify
c5aa993b JM	9	it under the terms of the GNU General Public License as published by
a9762ec7	10	the Free Software Foundation; either version 3 of the License, or
c5aa993b	11	(at your option) any later version.
c906108c	12
c5aa993b JM	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
c906108c	17
c5aa993b	18	You should have received a copy of the GNU General Public License
a9762ec7	19	along with this program. If not, see <http://www.gnu.org/licenses/>. */
c906108c SS	20
c906108c SS	21	#include "defs.h"
c906108c SS	22	#include "symtab.h"
c906108c SS	23	#include "gdbtypes.h"
72019c9c GM	24	#include "expression.h"
	25	#include "value.h"
	26	#include "valprint.h"
	27	#include "language.h"
	28	#include "typeprint.h"
a8d6eb4a	29	#include "c-lang.h"
72019c9c GM	30	#include "m2-lang.h"
	31	#include "target.h"
	32
79a45b7d TT	33	static int print_unpacked_pointer (struct type *type,
	34	CORE_ADDR address, CORE_ADDR addr,
	35	const struct value_print_options *options,
	36	struct ui_file *stream);
844781a1 GM	37	static void
	38	m2_print_array_contents (struct type type, const gdb_byte valaddr,
	39	int embedded_offset, CORE_ADDR address,
79a45b7d TT	40	struct ui_file *stream, int recurse,
	41	const struct value_print_options *options,
	42	int len);
72019c9c GM	43
	44
	45	/* Print function pointer with inferior address ADDRESS onto stdio
	46	stream STREAM. */
	47
	48	static void
50810684 UW	49	print_function_pointer_address (struct gdbarch *gdbarch, CORE_ADDR address,
50810684 UW	50	struct ui_file *stream, int addressprint)
72019c9c	51	{
50810684	52	CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr (gdbarch, address,
72019c9c GM	53	&current_target);
	54
	55	/* If the function pointer is represented by a description, print the
	56	address of the description. */
	57	if (addressprint && func_addr != address)
	58	{
	59	fputs_filtered ("@", stream);
5af949e3	60	fputs_filtered (paddress (gdbarch, address), stream);
72019c9c GM	61	fputs_filtered (": ", stream);
72019c9c GM	62	}
5af949e3	63	print_address_demangle (gdbarch, func_addr, stream, demangle);
72019c9c GM	64	}
72019c9c GM	65
844781a1 GM	66	/* get_long_set_bounds - assigns the bounds of the long set to low and
844781a1 GM	67	high. */
72019c9c GM	68
	69	int
	70	get_long_set_bounds (struct type type, LONGEST low, LONGEST *high)
	71	{
	72	int len, i;
	73
	74	if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
	75	{
	76	len = TYPE_NFIELDS (type);
	77	i = TYPE_N_BASECLASSES (type);
	78	if (len == 0)
	79	return 0;
	80	*low = TYPE_LOW_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, i)));
	81	*high = TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type,
	82	len-1)));
	83	return 1;
	84	}
	85	error (_("expecting long_set"));
	86	return 0;
	87	}
	88
	89	static void
	90	m2_print_long_set (struct type type, const gdb_byte valaddr,
	91	int embedded_offset, CORE_ADDR address,
79a45b7d	92	struct ui_file *stream)
72019c9c GM	93	{
	94	int empty_set = 1;
	95	int element_seen = 0;
	96	LONGEST previous_low = 0;
	97	LONGEST previous_high= 0;
	98	LONGEST i, low_bound, high_bound;
	99	LONGEST field_low, field_high;
	100	struct type *range;
	101	int len, field;
	102	struct type *target;
	103	int bitval;
	104
	105	CHECK_TYPEDEF (type);
	106
	107	fprintf_filtered (stream, "{");
	108	len = TYPE_NFIELDS (type);
	109	if (get_long_set_bounds (type, &low_bound, &high_bound))
	110	{
	111	field = TYPE_N_BASECLASSES (type);
	112	range = TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
	113	}
	114	else
	115	{
	116	fprintf_filtered (stream, " %s }", _("<unknown bounds of set>"));
	117	return;
	118	}
	119
	120	target = TYPE_TARGET_TYPE (range);
72019c9c GM	121
	122	if (get_discrete_bounds (range, &field_low, &field_high) >= 0)
	123	{
	124	for (i = low_bound; i <= high_bound; i++)
	125	{
	126	bitval = value_bit_index (TYPE_FIELD_TYPE (type, field),
	127	(TYPE_FIELD_BITPOS (type, field) / 8) +
	128	valaddr + embedded_offset, i);
	129	if (bitval < 0)
	130	error (_("bit test is out of range"));
	131	else if (bitval > 0)
	132	{
	133	previous_high = i;
	134	if (! element_seen)
	135	{
	136	if (! empty_set)
	137	fprintf_filtered (stream, ", ");
	138	print_type_scalar (target, i, stream);
	139	empty_set = 0;
	140	element_seen = 1;
	141	previous_low = i;
	142	}
	143	}
	144	else
	145	{
	146	/* bit is not set */
	147	if (element_seen)
	148	{
	149	if (previous_low+1 < previous_high)
	150	fprintf_filtered (stream, "..");
	151	if (previous_low+1 < previous_high)
	152	print_type_scalar (target, previous_high, stream);
	153	element_seen = 0;
	154	}
	155	}
	156	if (i == field_high)
	157	{
	158	field++;
	159	if (field == len)
	160	break;
	161	range = TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
	162	if (get_discrete_bounds (range, &field_low, &field_high) < 0)
	163	break;
	164	target = TYPE_TARGET_TYPE (range);
72019c9c GM	165	}
	166	}
	167	if (element_seen)
	168	{
	169	if (previous_low+1 < previous_high)
	170	{
	171	fprintf_filtered (stream, "..");
	172	print_type_scalar (target, previous_high, stream);
	173	}
	174	element_seen = 0;
	175	}
	176	fprintf_filtered (stream, "}");
	177	}
	178	}
	179
844781a1 GM	180	static void
	181	m2_print_unbounded_array (struct type type, const gdb_byte valaddr,
	182	int embedded_offset, CORE_ADDR address,
79a45b7d TT	183	struct ui_file *stream, int recurse,
79a45b7d TT	184	const struct value_print_options *options)
844781a1 GM	185	{
	186	struct type *content_type;
	187	CORE_ADDR addr;
	188	LONGEST len;
	189	struct value *val;
	190
	191	CHECK_TYPEDEF (type);
	192	content_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0));
	193
	194	addr = unpack_pointer (TYPE_FIELD_TYPE (type, 0),
	195	(TYPE_FIELD_BITPOS (type, 0) / 8) +
	196	valaddr + embedded_offset);
	197
	198	val = value_at_lazy (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)),
	199	addr);
	200	len = unpack_field_as_long (type, valaddr + embedded_offset, 1);
	201
	202	fprintf_filtered (stream, "{");
	203	m2_print_array_contents (value_type (val), value_contents(val),
	204	value_embedded_offset (val), addr, stream,
79a45b7d	205	recurse, options, len);
844781a1 GM	206	fprintf_filtered (stream, ", HIGH = %d}", (int) len);
	207	}
	208
79a45b7d	209	static int
72019c9c GM	210	print_unpacked_pointer (struct type *type,
72019c9c GM	211	CORE_ADDR address, CORE_ADDR addr,
79a45b7d TT	212	const struct value_print_options *options,
79a45b7d TT	213	struct ui_file *stream)
72019c9c	214	{
50810684	215	struct gdbarch *gdbarch = get_type_arch (type);
72019c9c GM	216	struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
	217
	218	if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
	219	{
	220	/* Try to print what function it points to. */
50810684 UW	221	print_function_pointer_address (gdbarch, addr, stream,
50810684 UW	222	options->addressprint);
72019c9c GM	223	/* Return value is irrelevant except for string pointers. */
	224	return 0;
	225	}
	226
79a45b7d	227	if (options->addressprint && options->format != 's')
5af949e3	228	fputs_filtered (paddress (gdbarch, address), stream);
72019c9c GM	229
	230	/* For a pointer to char or unsigned char, also print the string
	231	pointed to, unless pointer is null. */
	232
	233	if (TYPE_LENGTH (elttype) == 1
	234	&& TYPE_CODE (elttype) == TYPE_CODE_INT
79a45b7d	235	&& (options->format == 0 \|\| options->format == 's')
72019c9c	236	&& addr != 0)
6c7a06a3 TT	237	return val_print_string (TYPE_TARGET_TYPE (type), addr, -1,
6c7a06a3 TT	238	stream, options);
72019c9c GM	239
	240	return 0;
	241	}
	242
	243	static void
844781a1 GM	244	print_variable_at_address (struct type *type,
844781a1 GM	245	const gdb_byte *valaddr,
79a45b7d TT	246	struct ui_file *stream,
	247	int recurse,
	248	const struct value_print_options *options)
72019c9c	249	{
5af949e3	250	struct gdbarch *gdbarch = get_type_arch (type);
72019c9c GM	251	CORE_ADDR addr = unpack_pointer (type, valaddr);
	252	struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
	253
	254	fprintf_filtered (stream, "[");
5af949e3	255	fputs_filtered (paddress (gdbarch, addr), stream);
72019c9c GM	256	fprintf_filtered (stream, "] : ");
	257
	258	if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
	259	{
	260	struct value *deref_val =
d8631d21	261	value_at (TYPE_TARGET_TYPE (type), unpack_pointer (type, valaddr));
79a45b7d	262	common_val_print (deref_val, stream, recurse, options, current_language);
72019c9c GM	263	}
	264	else
	265	fputs_filtered ("???", stream);
	266	}
	267
844781a1 GM	268
	269	/* m2_print_array_contents - prints out the contents of an
	270	array up to a max_print values.
	271	It prints arrays of char as a string
	272	and all other data types as comma
	273	separated values. */
	274
	275	static void
	276	m2_print_array_contents (struct type type, const gdb_byte valaddr,
	277	int embedded_offset, CORE_ADDR address,
79a45b7d TT	278	struct ui_file *stream, int recurse,
	279	const struct value_print_options *options,
	280	int len)
844781a1 GM	281	{
	282	int eltlen;
	283	CHECK_TYPEDEF (type);
	284
	285	if (TYPE_LENGTH (type) > 0)
	286	{
	287	eltlen = TYPE_LENGTH (type);
79a45b7d	288	if (options->prettyprint_arrays)
844781a1 GM	289	print_spaces_filtered (2 + 2 * recurse, stream);
	290	/* For an array of chars, print with string syntax. */
	291	if (eltlen == 1 &&
	292	((TYPE_CODE (type) == TYPE_CODE_INT)
	293	\|\| ((current_language->la_language == language_m2)
	294	&& (TYPE_CODE (type) == TYPE_CODE_CHAR)))
79a45b7d	295	&& (options->format == 0 \|\| options->format == 's'))
6c7a06a3	296	val_print_string (type, address, len+1, stream, options);
844781a1 GM	297	else
	298	{
	299	fprintf_filtered (stream, "{");
	300	val_print_array_elements (type, valaddr + embedded_offset,
79a45b7d	301	address, stream, recurse, options, 0);
844781a1 GM	302	fprintf_filtered (stream, "}");
	303	}
	304	}
	305	}
	306
	307
72019c9c GM	308	/* Print data of type TYPE located at VALADDR (within GDB), which came from
72019c9c GM	309	the inferior at address ADDRESS, onto stdio stream STREAM according to
79a45b7d	310	OPTIONS. The data at VALADDR is in target byte order.
72019c9c GM	311
72019c9c GM	312	If the data are a string pointer, returns the number of string characters
79a45b7d	313	printed. */
c906108c SS	314
c906108c SS	315	int
fc1a4b47	316	m2_val_print (struct type type, const gdb_byte valaddr, int embedded_offset,
79a45b7d TT	317	CORE_ADDR address, struct ui_file *stream, int recurse,
79a45b7d TT	318	const struct value_print_options *options)
c906108c	319	{
5af949e3	320	struct gdbarch *gdbarch = get_type_arch (type);
72019c9c GM	321	unsigned int i = 0; /* Number of characters printed */
	322	unsigned len;
	323	struct type *elttype;
	324	unsigned eltlen;
	325	int length_pos, length_size, string_pos;
	326	int char_size;
	327	LONGEST val;
	328	CORE_ADDR addr;
	329
	330	CHECK_TYPEDEF (type);
	331	switch (TYPE_CODE (type))
	332	{
	333	case TYPE_CODE_ARRAY:
	334	if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
	335	{
	336	elttype = check_typedef (TYPE_TARGET_TYPE (type));
	337	eltlen = TYPE_LENGTH (elttype);
	338	len = TYPE_LENGTH (type) / eltlen;
79a45b7d	339	if (options->prettyprint_arrays)
72019c9c GM	340	print_spaces_filtered (2 + 2 * recurse, stream);
	341	/* For an array of chars, print with string syntax. */
	342	if (eltlen == 1 &&
	343	((TYPE_CODE (elttype) == TYPE_CODE_INT)
	344	\|\| ((current_language->la_language == language_m2)
	345	&& (TYPE_CODE (elttype) == TYPE_CODE_CHAR)))
79a45b7d	346	&& (options->format == 0 \|\| options->format == 's'))
72019c9c GM	347	{
	348	/* If requested, look for the first null char and only print
	349	elements up to it. */
79a45b7d	350	if (options->stop_print_at_null)
72019c9c GM	351	{
	352	unsigned int temp_len;
	353
	354	/* Look for a NULL char. */
	355	for (temp_len = 0;
	356	(valaddr + embedded_offset)[temp_len]
79a45b7d	357	&& temp_len < len && temp_len < options->print_max;
72019c9c GM	358	temp_len++);
	359	len = temp_len;
	360	}
	361
6c7a06a3 TT	362	LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type),
6c7a06a3 TT	363	valaddr + embedded_offset, len, 0,
79a45b7d	364	options);
72019c9c GM	365	i = len;
	366	}
	367	else
	368	{
	369	fprintf_filtered (stream, "{");
	370	val_print_array_elements (type, valaddr + embedded_offset,
79a45b7d	371	address, stream, recurse, options, 0);
72019c9c GM	372	fprintf_filtered (stream, "}");
	373	}
	374	break;
	375	}
	376	/* Array of unspecified length: treat like pointer to first elt. */
79a45b7d	377	print_unpacked_pointer (type, address, address, options, stream);
72019c9c GM	378	break;
	379
	380	case TYPE_CODE_PTR:
	381	if (TYPE_CONST (type))
	382	print_variable_at_address (type, valaddr + embedded_offset,
79a45b7d TT	383	stream, recurse, options);
	384	else if (options->format && options->format != 's')
	385	print_scalar_formatted (valaddr + embedded_offset, type,
	386	options, 0, stream);
72019c9c GM	387	else
	388	{
	389	addr = unpack_pointer (type, valaddr + embedded_offset);
79a45b7d	390	print_unpacked_pointer (type, addr, address, options, stream);
72019c9c GM	391	}
	392	break;
	393
72019c9c GM	394	case TYPE_CODE_REF:
72019c9c GM	395	elttype = check_typedef (TYPE_TARGET_TYPE (type));
79a45b7d	396	if (options->addressprint)
72019c9c GM	397	{
	398	CORE_ADDR addr
	399	= extract_typed_address (valaddr + embedded_offset, type);
	400	fprintf_filtered (stream, "@");
5af949e3	401	fputs_filtered (paddress (gdbarch, addr), stream);
79a45b7d	402	if (options->deref_ref)
72019c9c GM	403	fputs_filtered (": ", stream);
	404	}
	405	/* De-reference the reference. */
79a45b7d	406	if (options->deref_ref)
72019c9c GM	407	{
	408	if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
	409	{
	410	struct value *deref_val =
	411	value_at
	412	(TYPE_TARGET_TYPE (type),
d8631d21	413	unpack_pointer (type, valaddr + embedded_offset));
79a45b7d TT	414	common_val_print (deref_val, stream, recurse, options,
79a45b7d TT	415	current_language);
72019c9c GM	416	}
	417	else
	418	fputs_filtered ("???", stream);
	419	}
	420	break;
	421
	422	case TYPE_CODE_UNION:
79a45b7d	423	if (recurse && !options->unionprint)
72019c9c GM	424	{
	425	fprintf_filtered (stream, "{...}");
	426	break;
	427	}
	428	/* Fall through. */
	429	case TYPE_CODE_STRUCT:
	430	if (m2_is_long_set (type))
	431	m2_print_long_set (type, valaddr, embedded_offset, address,
79a45b7d	432	stream);
844781a1 GM	433	else if (m2_is_unbounded_array (type))
844781a1 GM	434	m2_print_unbounded_array (type, valaddr, embedded_offset,
79a45b7d	435	address, stream, recurse, options);
72019c9c GM	436	else
72019c9c GM	437	cp_print_value_fields (type, type, valaddr, embedded_offset,
79a45b7d	438	address, stream, recurse, options, NULL, 0);
72019c9c GM	439	break;
	440
	441	case TYPE_CODE_ENUM:
79a45b7d	442	if (options->format)
72019c9c GM	443	{
72019c9c GM	444	print_scalar_formatted (valaddr + embedded_offset, type,
79a45b7d	445	options, 0, stream);
72019c9c GM	446	break;
	447	}
	448	len = TYPE_NFIELDS (type);
	449	val = unpack_long (type, valaddr + embedded_offset);
	450	for (i = 0; i < len; i++)
	451	{
	452	QUIT;
	453	if (val == TYPE_FIELD_BITPOS (type, i))
	454	{
	455	break;
	456	}
	457	}
	458	if (i < len)
	459	{
	460	fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
	461	}
	462	else
	463	{
	464	print_longest (stream, 'd', 0, val);
	465	}
	466	break;
	467
	468	case TYPE_CODE_FUNC:
79a45b7d	469	if (options->format)
72019c9c GM	470	{
72019c9c GM	471	print_scalar_formatted (valaddr + embedded_offset, type,
79a45b7d	472	options, 0, stream);
72019c9c GM	473	break;
	474	}
	475	/* FIXME, we should consider, at least for ANSI C language, eliminating
	476	the distinction made between FUNCs and POINTERs to FUNCs. */
	477	fprintf_filtered (stream, "{");
	478	type_print (type, "", stream, -1);
	479	fprintf_filtered (stream, "} ");
	480	/* Try to print what function it points to, and its address. */
5af949e3	481	print_address_demangle (gdbarch, address, stream, demangle);
72019c9c GM	482	break;
	483
	484	case TYPE_CODE_BOOL:
79a45b7d TT	485	if (options->format \|\| options->output_format)
	486	{
	487	struct value_print_options opts = *options;
	488	opts.format = (options->format ? options->format
	489	: options->output_format);
	490	print_scalar_formatted (valaddr + embedded_offset, type,
	491	&opts, 0, stream);
	492	}
72019c9c GM	493	else
	494	{
	495	val = unpack_long (type, valaddr + embedded_offset);
	496	if (val == 0)
	497	fputs_filtered ("FALSE", stream);
	498	else if (val == 1)
	499	fputs_filtered ("TRUE", stream);
	500	else
	501	fprintf_filtered (stream, "%ld)", (long int) val);
	502	}
	503	break;
	504
	505	case TYPE_CODE_RANGE:
	506	if (TYPE_LENGTH (type) == TYPE_LENGTH (TYPE_TARGET_TYPE (type)))
	507	{
	508	m2_val_print (TYPE_TARGET_TYPE (type), valaddr, embedded_offset,
79a45b7d	509	address, stream, recurse, options);
72019c9c GM	510	break;
	511	}
	512	/* FIXME: create_range_type does not set the unsigned bit in a
	513	range type (I think it probably should copy it from the target
	514	type), so we won't print values which are too large to
	515	fit in a signed integer correctly. */
	516	/* FIXME: Doesn't handle ranges of enums correctly. (Can't just
	517	print with the target type, though, because the size of our type
	518	and the target type might differ). */
	519	/* FALLTHROUGH */
	520
	521	case TYPE_CODE_INT:
79a45b7d TT	522	if (options->format \|\| options->output_format)
	523	{
	524	struct value_print_options opts = *options;
	525	opts.format = (options->format ? options->format
	526	: options->output_format);
	527	print_scalar_formatted (valaddr + embedded_offset, type,
	528	&opts, 0, stream);
	529	}
72019c9c GM	530	else
	531	val_print_type_code_int (type, valaddr + embedded_offset, stream);
	532	break;
	533
	534	case TYPE_CODE_CHAR:
79a45b7d TT	535	if (options->format \|\| options->output_format)
	536	{
	537	struct value_print_options opts = *options;
	538	opts.format = (options->format ? options->format
	539	: options->output_format);
	540	print_scalar_formatted (valaddr + embedded_offset, type,
	541	&opts, 0, stream);
	542	}
72019c9c GM	543	else
	544	{
	545	val = unpack_long (type, valaddr + embedded_offset);
	546	if (TYPE_UNSIGNED (type))
	547	fprintf_filtered (stream, "%u", (unsigned int) val);
	548	else
	549	fprintf_filtered (stream, "%d", (int) val);
	550	fputs_filtered (" ", stream);
6c7a06a3	551	LA_PRINT_CHAR ((unsigned char) val, type, stream);
72019c9c GM	552	}
	553	break;
	554
	555	case TYPE_CODE_FLT:
79a45b7d	556	if (options->format)
72019c9c	557	print_scalar_formatted (valaddr + embedded_offset, type,
79a45b7d	558	options, 0, stream);
72019c9c GM	559	else
	560	print_floating (valaddr + embedded_offset, type, stream);
	561	break;
	562
	563	case TYPE_CODE_METHOD:
	564	break;
	565
	566	case TYPE_CODE_BITSTRING:
	567	case TYPE_CODE_SET:
	568	elttype = TYPE_INDEX_TYPE (type);
	569	CHECK_TYPEDEF (elttype);
	570	if (TYPE_STUB (elttype))
	571	{
	572	fprintf_filtered (stream, _("<incomplete type>"));
	573	gdb_flush (stream);
	574	break;
	575	}
	576	else
	577	{
	578	struct type *range = elttype;
	579	LONGEST low_bound, high_bound;
	580	int i;
	581	int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING;
	582	int need_comma = 0;
	583
	584	if (is_bitstring)
	585	fputs_filtered ("B'", stream);
	586	else
	587	fputs_filtered ("{", stream);
	588
	589	i = get_discrete_bounds (range, &low_bound, &high_bound);
	590	maybe_bad_bstring:
	591	if (i < 0)
	592	{
	593	fputs_filtered (_("<error value>"), stream);
	594	goto done;
	595	}
	596
	597	for (i = low_bound; i <= high_bound; i++)
	598	{
	599	int element = value_bit_index (type, valaddr + embedded_offset,
	600	i);
	601	if (element < 0)
	602	{
	603	i = element;
	604	goto maybe_bad_bstring;
	605	}
	606	if (is_bitstring)
	607	fprintf_filtered (stream, "%d", element);
	608	else if (element)
	609	{
	610	if (need_comma)
	611	fputs_filtered (", ", stream);
	612	print_type_scalar (range, i, stream);
	613	need_comma = 1;
	614
	615	if (i + 1 <= high_bound
	616	&& value_bit_index (type, valaddr + embedded_offset,
	617	++i))
	618	{
	619	int j = i;
	620	fputs_filtered ("..", stream);
	621	while (i + 1 <= high_bound
	622	&& value_bit_index (type,
623	valaddr + embedded_offset,
624	++i))
625	j = i;
626	print_type_scalar (range, j, stream);
627	}
628	}
629	}
630	done:
631	if (is_bitstring)
632	fputs_filtered ("'", stream);
633	else
634	fputs_filtered ("}", stream);
635	}
636	break;
637
638	case TYPE_CODE_VOID:
639	fprintf_filtered (stream, "void");
640	break;
641
642	case TYPE_CODE_ERROR:
643	fprintf_filtered (stream, _("<error type>"));
644	break;
645
646	case TYPE_CODE_UNDEF:
647	/* This happens (without TYPE_FLAG_STUB set) on systems which don't use
648	dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
649	and no complete type for struct foo in that file. */
650	fprintf_filtered (stream, _("<incomplete type>"));
651	break;
652
653	default:
654	error (_("Invalid m2 type code %d in symbol table."), TYPE_CODE (type));
655	}
656	gdb_flush (stream);
657	return (0);
c906108c	658	}