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

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

   Copyright (C) 1986-2016 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 *val,
			 const struct value_print_options *options,
			 int len);


/* 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;

  type = 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;

  type = 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_for_printing (val),
			   value_embedded_offset (val), addr, stream,
			   recurse, val, 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));
  int want_space = 0;

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

  if (options->addressprint && options->format != 's')
    {
      fputs_filtered (paddress (gdbarch, address), stream);
      want_space = 1;
    }

  /* 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)
    {
      if (want_space)
	fputs_filtered (" ", stream);
      return val_print_string (TYPE_TARGET_TYPE (type), NULL, 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 *val,
			 const struct value_print_options *options,
			 int len)
{
  type = check_typedef (type);

  if (TYPE_LENGTH (type) > 0)
    {
      if (options->prettyformat_arrays)
	print_spaces_filtered (2 + 2 * recurse, stream);
      /* For an array of chars, print with string syntax.  */
      if (TYPE_LENGTH (type) == 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, NULL, address, len+1, stream, options);
      else
	{
	  fprintf_filtered (stream, "{");
	  val_print_array_elements (type, valaddr, embedded_offset,
				    address, stream, recurse, val,
				    options, 0);
	  fprintf_filtered (stream, "}");
	}
    }
}

/* Decorations for Modula 2.  */

static const struct generic_val_print_decorations m2_decorations =
{
  "",
  " + ",
  " * I",
  "TRUE",
  "FALSE",
  "void",
  "{",
  "}"
};

/* See val_print for a description of the various parameters of this
   function; they are identical.  */

void
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 *original_value,
	      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;
  CORE_ADDR addr;

  type = 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));
	  len = TYPE_LENGTH (type) / TYPE_LENGTH (elttype);
	  if (options->prettyformat_arrays)
	    print_spaces_filtered (2 + 2 * recurse, stream);
	  /* For an array of chars, print with string syntax.  */
	  if (TYPE_LENGTH (elttype) == 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, NULL,
			       0, options);
	      i = len;
	    }
	  else
	    {
	      fprintf_filtered (stream, "{");
	      val_print_array_elements (type, valaddr, embedded_offset,
					address, stream,
					recurse, original_value,
					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')
	val_print_scalar_formatted (type, valaddr, embedded_offset,
				    original_value, options, 0, stream);
      else
	{
	  addr = unpack_pointer (type, valaddr + embedded_offset);
	  print_unpacked_pointer (type, addr, address, options, 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, original_value,
			       options, NULL, 0);
      break;

    case TYPE_CODE_SET:
      elttype = TYPE_INDEX_TYPE (type);
      elttype = 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 need_comma = 0;

	  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 (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:
	  fputs_filtered ("}", stream);
	}
      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, original_value, options);
	  break;
	}
      /* FIXME: create_static_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_REF:
    case TYPE_CODE_ENUM:
    case TYPE_CODE_FUNC:
    case TYPE_CODE_INT:
    case TYPE_CODE_FLT:
    case TYPE_CODE_METHOD:
    case TYPE_CODE_VOID:
    case TYPE_CODE_ERROR:
    case TYPE_CODE_UNDEF:
    case TYPE_CODE_BOOL:
    case TYPE_CODE_CHAR:
    default:
      generic_val_print (type, valaddr, embedded_offset, address,
			 stream, recurse, original_value, options,
			 &m2_decorations);
      break;
    }
  gdb_flush (stream);
}
Commit	Line	Data
c906108c	1	/* Support for printing Modula 2 values for GDB, the GNU debugger.
a8d6eb4a	2
618f726f	3	Copyright (C) 1986-2016 Free Software Foundation, Inc.
c906108c	4
c5aa993b	5	This file is part of GDB.
c906108c	6
c5aa993b JM	7	This program is free software; you can redistribute it and/or modify
c5aa993b JM	8	it under the terms of the GNU General Public License as published by
a9762ec7	9	the Free Software Foundation; either version 3 of the License, or
c5aa993b	10	(at your option) any later version.
c906108c	11
c5aa993b JM	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.
c906108c	16
c5aa993b	17	You should have received a copy of the GNU General Public License
a9762ec7	18	along with this program. If not, see <http://www.gnu.org/licenses/>. */
c906108c SS	19
c906108c SS	20	#include "defs.h"
c906108c SS	21	#include "symtab.h"
c906108c SS	22	#include "gdbtypes.h"
72019c9c GM	23	#include "expression.h"
	24	#include "value.h"
	25	#include "valprint.h"
	26	#include "language.h"
	27	#include "typeprint.h"
a8d6eb4a	28	#include "c-lang.h"
72019c9c GM	29	#include "m2-lang.h"
	30	#include "target.h"
	31
79a45b7d TT	32	static int print_unpacked_pointer (struct type *type,
	33	CORE_ADDR address, CORE_ADDR addr,
	34	const struct value_print_options *options,
	35	struct ui_file *stream);
844781a1 GM	36	static void
	37	m2_print_array_contents (struct type type, const gdb_byte valaddr,
	38	int embedded_offset, CORE_ADDR address,
79a45b7d	39	struct ui_file *stream, int recurse,
0e03807e	40	const struct value *val,
79a45b7d TT	41	const struct value_print_options *options,
79a45b7d TT	42	int len);
72019c9c GM	43
72019c9c GM	44
844781a1 GM	45	/* get_long_set_bounds - assigns the bounds of the long set to low and
844781a1 GM	46	high. */
72019c9c GM	47
	48	int
	49	get_long_set_bounds (struct type type, LONGEST low, LONGEST *high)
	50	{
	51	int len, i;
	52
	53	if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
	54	{
	55	len = TYPE_NFIELDS (type);
	56	i = TYPE_N_BASECLASSES (type);
	57	if (len == 0)
	58	return 0;
	59	*low = TYPE_LOW_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, i)));
	60	*high = TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type,
	61	len-1)));
	62	return 1;
	63	}
	64	error (_("expecting long_set"));
	65	return 0;
	66	}
	67
	68	static void
	69	m2_print_long_set (struct type type, const gdb_byte valaddr,
	70	int embedded_offset, CORE_ADDR address,
79a45b7d	71	struct ui_file *stream)
72019c9c GM	72	{
	73	int empty_set = 1;
	74	int element_seen = 0;
	75	LONGEST previous_low = 0;
	76	LONGEST previous_high= 0;
	77	LONGEST i, low_bound, high_bound;
	78	LONGEST field_low, field_high;
	79	struct type *range;
	80	int len, field;
	81	struct type *target;
	82	int bitval;
	83
f168693b	84	type = check_typedef (type);
72019c9c GM	85
	86	fprintf_filtered (stream, "{");
	87	len = TYPE_NFIELDS (type);
	88	if (get_long_set_bounds (type, &low_bound, &high_bound))
	89	{
	90	field = TYPE_N_BASECLASSES (type);
	91	range = TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
	92	}
	93	else
	94	{
	95	fprintf_filtered (stream, " %s }", _("<unknown bounds of set>"));
	96	return;
	97	}
	98
	99	target = TYPE_TARGET_TYPE (range);
72019c9c GM	100
	101	if (get_discrete_bounds (range, &field_low, &field_high) >= 0)
	102	{
	103	for (i = low_bound; i <= high_bound; i++)
	104	{
	105	bitval = value_bit_index (TYPE_FIELD_TYPE (type, field),
	106	(TYPE_FIELD_BITPOS (type, field) / 8) +
	107	valaddr + embedded_offset, i);
	108	if (bitval < 0)
	109	error (_("bit test is out of range"));
	110	else if (bitval > 0)
	111	{
	112	previous_high = i;
	113	if (! element_seen)
	114	{
	115	if (! empty_set)
	116	fprintf_filtered (stream, ", ");
	117	print_type_scalar (target, i, stream);
	118	empty_set = 0;
	119	element_seen = 1;
	120	previous_low = i;
	121	}
	122	}
	123	else
	124	{
	125	/* bit is not set */
	126	if (element_seen)
	127	{
	128	if (previous_low+1 < previous_high)
	129	fprintf_filtered (stream, "..");
	130	if (previous_low+1 < previous_high)
	131	print_type_scalar (target, previous_high, stream);
	132	element_seen = 0;
	133	}
	134	}
	135	if (i == field_high)
	136	{
	137	field++;
	138	if (field == len)
	139	break;
	140	range = TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
	141	if (get_discrete_bounds (range, &field_low, &field_high) < 0)
	142	break;
	143	target = TYPE_TARGET_TYPE (range);
72019c9c GM	144	}
	145	}
	146	if (element_seen)
	147	{
	148	if (previous_low+1 < previous_high)
	149	{
	150	fprintf_filtered (stream, "..");
	151	print_type_scalar (target, previous_high, stream);
	152	}
	153	element_seen = 0;
	154	}
	155	fprintf_filtered (stream, "}");
	156	}
	157	}
	158
844781a1 GM	159	static void
	160	m2_print_unbounded_array (struct type type, const gdb_byte valaddr,
	161	int embedded_offset, CORE_ADDR address,
79a45b7d TT	162	struct ui_file *stream, int recurse,
79a45b7d TT	163	const struct value_print_options *options)
844781a1 GM	164	{
	165	struct type *content_type;
	166	CORE_ADDR addr;
	167	LONGEST len;
	168	struct value *val;
	169
f168693b	170	type = check_typedef (type);
844781a1 GM	171	content_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0));
	172
	173	addr = unpack_pointer (TYPE_FIELD_TYPE (type, 0),
	174	(TYPE_FIELD_BITPOS (type, 0) / 8) +
	175	valaddr + embedded_offset);
	176
	177	val = value_at_lazy (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)),
	178	addr);
	179	len = unpack_field_as_long (type, valaddr + embedded_offset, 1);
	180
	181	fprintf_filtered (stream, "{");
66d61a4c PA	182	m2_print_array_contents (value_type (val),
66d61a4c PA	183	value_contents_for_printing (val),
844781a1	184	value_embedded_offset (val), addr, stream,
66d61a4c	185	recurse, val, options, len);
844781a1 GM	186	fprintf_filtered (stream, ", HIGH = %d}", (int) len);
	187	}
	188
79a45b7d	189	static int
72019c9c GM	190	print_unpacked_pointer (struct type *type,
72019c9c GM	191	CORE_ADDR address, CORE_ADDR addr,
79a45b7d TT	192	const struct value_print_options *options,
79a45b7d TT	193	struct ui_file *stream)
72019c9c	194	{
50810684	195	struct gdbarch *gdbarch = get_type_arch (type);
72019c9c	196	struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
b012acdd	197	int want_space = 0;
72019c9c GM	198
	199	if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
	200	{
	201	/* Try to print what function it points to. */
edf0c1b7	202	print_function_pointer_address (options, gdbarch, addr, stream);
72019c9c GM	203	/* Return value is irrelevant except for string pointers. */
	204	return 0;
	205	}
	206
79a45b7d	207	if (options->addressprint && options->format != 's')
b012acdd TT	208	{
	209	fputs_filtered (paddress (gdbarch, address), stream);
	210	want_space = 1;
	211	}
72019c9c GM	212
	213	/* For a pointer to char or unsigned char, also print the string
	214	pointed to, unless pointer is null. */
	215
	216	if (TYPE_LENGTH (elttype) == 1
	217	&& TYPE_CODE (elttype) == TYPE_CODE_INT
79a45b7d	218	&& (options->format == 0 \|\| options->format == 's')
72019c9c	219	&& addr != 0)
b012acdd TT	220	{
	221	if (want_space)
	222	fputs_filtered (" ", stream);
	223	return val_print_string (TYPE_TARGET_TYPE (type), NULL, addr, -1,
	224	stream, options);
	225	}
72019c9c GM	226
	227	return 0;
	228	}
	229
	230	static void
844781a1 GM	231	print_variable_at_address (struct type *type,
844781a1 GM	232	const gdb_byte *valaddr,
79a45b7d TT	233	struct ui_file *stream,
	234	int recurse,
	235	const struct value_print_options *options)
72019c9c	236	{
5af949e3	237	struct gdbarch *gdbarch = get_type_arch (type);
72019c9c GM	238	CORE_ADDR addr = unpack_pointer (type, valaddr);
	239	struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
	240
	241	fprintf_filtered (stream, "[");
5af949e3	242	fputs_filtered (paddress (gdbarch, addr), stream);
72019c9c GM	243	fprintf_filtered (stream, "] : ");
	244
	245	if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
	246	{
	247	struct value *deref_val =
d8631d21	248	value_at (TYPE_TARGET_TYPE (type), unpack_pointer (type, valaddr));
b8d56208	249
79a45b7d	250	common_val_print (deref_val, stream, recurse, options, current_language);
72019c9c GM	251	}
	252	else
	253	fputs_filtered ("???", stream);
	254	}
	255
844781a1 GM	256
	257	/* m2_print_array_contents - prints out the contents of an
	258	array up to a max_print values.
	259	It prints arrays of char as a string
	260	and all other data types as comma
	261	separated values. */
	262
	263	static void
	264	m2_print_array_contents (struct type type, const gdb_byte valaddr,
	265	int embedded_offset, CORE_ADDR address,
79a45b7d	266	struct ui_file *stream, int recurse,
0e03807e	267	const struct value *val,
79a45b7d TT	268	const struct value_print_options *options,
79a45b7d TT	269	int len)
844781a1	270	{
f168693b	271	type = check_typedef (type);
844781a1 GM	272
	273	if (TYPE_LENGTH (type) > 0)
	274	{
2a998fc0	275	if (options->prettyformat_arrays)
844781a1 GM	276	print_spaces_filtered (2 + 2 * recurse, stream);
844781a1 GM	277	/* For an array of chars, print with string syntax. */
354ecfd5	278	if (TYPE_LENGTH (type) == 1 &&
844781a1 GM	279	((TYPE_CODE (type) == TYPE_CODE_INT)
	280	\|\| ((current_language->la_language == language_m2)
	281	&& (TYPE_CODE (type) == TYPE_CODE_CHAR)))
79a45b7d	282	&& (options->format == 0 \|\| options->format == 's'))
09ca9e2e	283	val_print_string (type, NULL, address, len+1, stream, options);
844781a1 GM	284	else
	285	{
	286	fprintf_filtered (stream, "{");
490f124f	287	val_print_array_elements (type, valaddr, embedded_offset,
0e03807e TT	288	address, stream, recurse, val,
0e03807e TT	289	options, 0);
844781a1 GM	290	fprintf_filtered (stream, "}");
	291	}
	292	}
	293	}
	294
e88acd96 TT	295	/* Decorations for Modula 2. */
	296
	297	static const struct generic_val_print_decorations m2_decorations =
	298	{
	299	"",
	300	" + ",
	301	" * I",
	302	"TRUE",
	303	"FALSE",
00272ec4 TT	304	"void",
	305	"{",
	306	"}"
e88acd96	307	};
844781a1	308
32b72a42	309	/* See val_print for a description of the various parameters of this
d3eab38a	310	function; they are identical. */
c906108c	311
d3eab38a	312	void
fc1a4b47	313	m2_val_print (struct type type, const gdb_byte valaddr, int embedded_offset,
79a45b7d	314	CORE_ADDR address, struct ui_file *stream, int recurse,
0e03807e	315	const struct value *original_value,
79a45b7d	316	const struct value_print_options *options)
c906108c	317	{
5af949e3	318	struct gdbarch *gdbarch = get_type_arch (type);
025bb325	319	unsigned int i = 0; /* Number of characters printed. */
72019c9c GM	320	unsigned len;
72019c9c GM	321	struct type *elttype;
72019c9c GM	322	CORE_ADDR addr;
72019c9c GM	323
f168693b	324	type = check_typedef (type);
72019c9c GM	325	switch (TYPE_CODE (type))
	326	{
	327	case TYPE_CODE_ARRAY:
	328	if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
	329	{
	330	elttype = check_typedef (TYPE_TARGET_TYPE (type));
354ecfd5	331	len = TYPE_LENGTH (type) / TYPE_LENGTH (elttype);
2a998fc0	332	if (options->prettyformat_arrays)
72019c9c GM	333	print_spaces_filtered (2 + 2 * recurse, stream);
72019c9c GM	334	/* For an array of chars, print with string syntax. */
354ecfd5	335	if (TYPE_LENGTH (elttype) == 1 &&
72019c9c GM	336	((TYPE_CODE (elttype) == TYPE_CODE_INT)
	337	\|\| ((current_language->la_language == language_m2)
	338	&& (TYPE_CODE (elttype) == TYPE_CODE_CHAR)))
79a45b7d	339	&& (options->format == 0 \|\| options->format == 's'))
72019c9c GM	340	{
	341	/* If requested, look for the first null char and only print
	342	elements up to it. */
79a45b7d	343	if (options->stop_print_at_null)
72019c9c GM	344	{
	345	unsigned int temp_len;
	346
025bb325	347	/* Look for a NULL char. */
72019c9c GM	348	for (temp_len = 0;
72019c9c GM	349	(valaddr + embedded_offset)[temp_len]
79a45b7d	350	&& temp_len < len && temp_len < options->print_max;
72019c9c GM	351	temp_len++);
	352	len = temp_len;
	353	}
	354
6c7a06a3	355	LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type),
be759fcf PM	356	valaddr + embedded_offset, len, NULL,
be759fcf PM	357	0, options);
72019c9c GM	358	i = len;
	359	}
	360	else
	361	{
	362	fprintf_filtered (stream, "{");
490f124f	363	val_print_array_elements (type, valaddr, embedded_offset,
025bb325 MS	364	address, stream,
025bb325 MS	365	recurse, original_value,
0e03807e	366	options, 0);
72019c9c GM	367	fprintf_filtered (stream, "}");
	368	}
	369	break;
	370	}
	371	/* Array of unspecified length: treat like pointer to first elt. */
79a45b7d	372	print_unpacked_pointer (type, address, address, options, stream);
72019c9c GM	373	break;
	374
	375	case TYPE_CODE_PTR:
	376	if (TYPE_CONST (type))
	377	print_variable_at_address (type, valaddr + embedded_offset,
79a45b7d TT	378	stream, recurse, options);
79a45b7d TT	379	else if (options->format && options->format != 's')
ab2188aa PA	380	val_print_scalar_formatted (type, valaddr, embedded_offset,
ab2188aa PA	381	original_value, options, 0, stream);
72019c9c GM	382	else
	383	{
	384	addr = unpack_pointer (type, valaddr + embedded_offset);
79a45b7d	385	print_unpacked_pointer (type, addr, address, options, stream);
72019c9c GM	386	}
	387	break;
	388
72019c9c	389	case TYPE_CODE_UNION:
79a45b7d	390	if (recurse && !options->unionprint)
72019c9c GM	391	{
	392	fprintf_filtered (stream, "{...}");
	393	break;
	394	}
	395	/* Fall through. */
	396	case TYPE_CODE_STRUCT:
	397	if (m2_is_long_set (type))
	398	m2_print_long_set (type, valaddr, embedded_offset, address,
79a45b7d	399	stream);
844781a1 GM	400	else if (m2_is_unbounded_array (type))
844781a1 GM	401	m2_print_unbounded_array (type, valaddr, embedded_offset,
79a45b7d	402	address, stream, recurse, options);
72019c9c GM	403	else
72019c9c GM	404	cp_print_value_fields (type, type, valaddr, embedded_offset,
0e03807e TT	405	address, stream, recurse, original_value,
0e03807e TT	406	options, NULL, 0);
72019c9c GM	407	break;
72019c9c GM	408
72019c9c GM	409	case TYPE_CODE_SET:
72019c9c GM	410	elttype = TYPE_INDEX_TYPE (type);
f168693b	411	elttype = check_typedef (elttype);
72019c9c GM	412	if (TYPE_STUB (elttype))
	413	{
	414	fprintf_filtered (stream, _("<incomplete type>"));
	415	gdb_flush (stream);
	416	break;
	417	}
	418	else
	419	{
	420	struct type *range = elttype;
	421	LONGEST low_bound, high_bound;
	422	int i;
72019c9c GM	423	int need_comma = 0;
72019c9c GM	424
6b1755ce	425	fputs_filtered ("{", stream);
72019c9c GM	426
	427	i = get_discrete_bounds (range, &low_bound, &high_bound);
	428	maybe_bad_bstring:
	429	if (i < 0)
	430	{
	431	fputs_filtered (_("<error value>"), stream);
	432	goto done;
	433	}
	434
	435	for (i = low_bound; i <= high_bound; i++)
	436	{
	437	int element = value_bit_index (type, valaddr + embedded_offset,
	438	i);
b8d56208	439
72019c9c GM	440	if (element < 0)
	441	{
	442	i = element;
	443	goto maybe_bad_bstring;
	444	}
6b1755ce	445	if (element)
72019c9c GM	446	{
	447	if (need_comma)
	448	fputs_filtered (", ", stream);
	449	print_type_scalar (range, i, stream);
	450	need_comma = 1;
	451
	452	if (i + 1 <= high_bound
	453	&& value_bit_index (type, valaddr + embedded_offset,
	454	++i))
	455	{
	456	int j = i;
b8d56208	457
72019c9c GM	458	fputs_filtered ("..", stream);
	459	while (i + 1 <= high_bound
	460	&& value_bit_index (type,
	461	valaddr + embedded_offset,
	462	++i))
	463	j = i;
	464	print_type_scalar (range, j, stream);
	465	}
	466	}
	467	}
	468	done:
6b1755ce	469	fputs_filtered ("}", stream);
72019c9c GM	470	}
	471	break;
	472
e88acd96 TT	473	case TYPE_CODE_RANGE:
	474	if (TYPE_LENGTH (type) == TYPE_LENGTH (TYPE_TARGET_TYPE (type)))
	475	{
	476	m2_val_print (TYPE_TARGET_TYPE (type), valaddr, embedded_offset,
	477	address, stream, recurse, original_value, options);
	478	break;
	479	}
0c9c3474	480	/* FIXME: create_static_range_type does not set the unsigned bit in a
e88acd96 TT	481	range type (I think it probably should copy it from the target
	482	type), so we won't print values which are too large to
	483	fit in a signed integer correctly. */
	484	/* FIXME: Doesn't handle ranges of enums correctly. (Can't just
	485	print with the target type, though, because the size of our type
	486	and the target type might differ). */
	487	/* FALLTHROUGH */
72019c9c	488
e88acd96 TT	489	case TYPE_CODE_REF:
	490	case TYPE_CODE_ENUM:
	491	case TYPE_CODE_FUNC:
	492	case TYPE_CODE_INT:
	493	case TYPE_CODE_FLT:
	494	case TYPE_CODE_METHOD:
	495	case TYPE_CODE_VOID:
72019c9c	496	case TYPE_CODE_ERROR:
72019c9c	497	case TYPE_CODE_UNDEF:
e88acd96 TT	498	case TYPE_CODE_BOOL:
e88acd96 TT	499	case TYPE_CODE_CHAR:
72019c9c	500	default:
e88acd96 TT	501	generic_val_print (type, valaddr, embedded_offset, address,
	502	stream, recurse, original_value, options,
	503	&m2_decorations);
	504	break;
72019c9c GM	505	}
72019c9c GM	506	gdb_flush (stream);
c906108c	507	}