[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, 2005-2012
   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;

  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_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));

  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), 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)
{
  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, 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;
  unsigned eltlen;
  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, 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_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_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_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
0b302171 JB	3	Copyright (C) 1986, 1988-1989, 1991-1992, 1996, 1998, 2000, 2005-2012
0b302171 JB	4	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	40	struct ui_file *stream, int recurse,
0e03807e	41	const struct value *val,
79a45b7d TT	42	const struct value_print_options *options,
79a45b7d TT	43	int len);
72019c9c GM	44
72019c9c GM	45
844781a1 GM	46	/* get_long_set_bounds - assigns the bounds of the long set to low and
844781a1 GM	47	high. */
72019c9c GM	48
	49	int
	50	get_long_set_bounds (struct type type, LONGEST low, LONGEST *high)
	51	{
	52	int len, i;
	53
	54	if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
	55	{
	56	len = TYPE_NFIELDS (type);
	57	i = TYPE_N_BASECLASSES (type);
	58	if (len == 0)
	59	return 0;
	60	*low = TYPE_LOW_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, i)));
	61	*high = TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type,
	62	len-1)));
	63	return 1;
	64	}
	65	error (_("expecting long_set"));
	66	return 0;
	67	}
	68
	69	static void
	70	m2_print_long_set (struct type type, const gdb_byte valaddr,
	71	int embedded_offset, CORE_ADDR address,
79a45b7d	72	struct ui_file *stream)
72019c9c GM	73	{
	74	int empty_set = 1;
	75	int element_seen = 0;
	76	LONGEST previous_low = 0;
	77	LONGEST previous_high= 0;
	78	LONGEST i, low_bound, high_bound;
	79	LONGEST field_low, field_high;
	80	struct type *range;
	81	int len, field;
	82	struct type *target;
	83	int bitval;
	84
	85	CHECK_TYPEDEF (type);
	86
	87	fprintf_filtered (stream, "{");
	88	len = TYPE_NFIELDS (type);
	89	if (get_long_set_bounds (type, &low_bound, &high_bound))
	90	{
	91	field = TYPE_N_BASECLASSES (type);
	92	range = TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
	93	}
	94	else
	95	{
	96	fprintf_filtered (stream, " %s }", _("<unknown bounds of set>"));
	97	return;
	98	}
	99
	100	target = TYPE_TARGET_TYPE (range);
72019c9c GM	101
	102	if (get_discrete_bounds (range, &field_low, &field_high) >= 0)
	103	{
	104	for (i = low_bound; i <= high_bound; i++)
	105	{
	106	bitval = value_bit_index (TYPE_FIELD_TYPE (type, field),
	107	(TYPE_FIELD_BITPOS (type, field) / 8) +
	108	valaddr + embedded_offset, i);
	109	if (bitval < 0)
	110	error (_("bit test is out of range"));
	111	else if (bitval > 0)
	112	{
	113	previous_high = i;
	114	if (! element_seen)
	115	{
	116	if (! empty_set)
	117	fprintf_filtered (stream, ", ");
	118	print_type_scalar (target, i, stream);
	119	empty_set = 0;
	120	element_seen = 1;
	121	previous_low = i;
	122	}
	123	}
	124	else
	125	{
	126	/* bit is not set */
	127	if (element_seen)
	128	{
	129	if (previous_low+1 < previous_high)
	130	fprintf_filtered (stream, "..");
	131	if (previous_low+1 < previous_high)
	132	print_type_scalar (target, previous_high, stream);
	133	element_seen = 0;
	134	}
	135	}
	136	if (i == field_high)
	137	{
	138	field++;
	139	if (field == len)
	140	break;
	141	range = TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
	142	if (get_discrete_bounds (range, &field_low, &field_high) < 0)
	143	break;
	144	target = TYPE_TARGET_TYPE (range);
72019c9c GM	145	}
	146	}
	147	if (element_seen)
	148	{
	149	if (previous_low+1 < previous_high)
	150	{
	151	fprintf_filtered (stream, "..");
	152	print_type_scalar (target, previous_high, stream);
	153	}
	154	element_seen = 0;
	155	}
	156	fprintf_filtered (stream, "}");
	157	}
	158	}
	159
844781a1 GM	160	static void
	161	m2_print_unbounded_array (struct type type, const gdb_byte valaddr,
	162	int embedded_offset, CORE_ADDR address,
79a45b7d TT	163	struct ui_file *stream, int recurse,
79a45b7d TT	164	const struct value_print_options *options)
844781a1 GM	165	{
	166	struct type *content_type;
	167	CORE_ADDR addr;
	168	LONGEST len;
	169	struct value *val;
	170
	171	CHECK_TYPEDEF (type);
	172	content_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0));
	173
	174	addr = unpack_pointer (TYPE_FIELD_TYPE (type, 0),
	175	(TYPE_FIELD_BITPOS (type, 0) / 8) +
	176	valaddr + embedded_offset);
	177
	178	val = value_at_lazy (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)),
	179	addr);
	180	len = unpack_field_as_long (type, valaddr + embedded_offset, 1);
	181
	182	fprintf_filtered (stream, "{");
66d61a4c PA	183	m2_print_array_contents (value_type (val),
66d61a4c PA	184	value_contents_for_printing (val),
844781a1	185	value_embedded_offset (val), addr, stream,
66d61a4c	186	recurse, val, options, len);
844781a1 GM	187	fprintf_filtered (stream, ", HIGH = %d}", (int) len);
	188	}
	189
79a45b7d	190	static int
72019c9c GM	191	print_unpacked_pointer (struct type *type,
72019c9c GM	192	CORE_ADDR address, CORE_ADDR addr,
79a45b7d TT	193	const struct value_print_options *options,
79a45b7d TT	194	struct ui_file *stream)
72019c9c	195	{
50810684	196	struct gdbarch *gdbarch = get_type_arch (type);
72019c9c GM	197	struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
	198
	199	if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
	200	{
	201	/* Try to print what function it points to. */
50810684 UW	202	print_function_pointer_address (gdbarch, addr, stream,
50810684 UW	203	options->addressprint);
72019c9c GM	204	/* Return value is irrelevant except for string pointers. */
	205	return 0;
	206	}
	207
79a45b7d	208	if (options->addressprint && options->format != 's')
5af949e3	209	fputs_filtered (paddress (gdbarch, address), stream);
72019c9c GM	210
	211	/* For a pointer to char or unsigned char, also print the string
	212	pointed to, unless pointer is null. */
	213
	214	if (TYPE_LENGTH (elttype) == 1
	215	&& TYPE_CODE (elttype) == TYPE_CODE_INT
79a45b7d	216	&& (options->format == 0 \|\| options->format == 's')
72019c9c	217	&& addr != 0)
09ca9e2e	218	return val_print_string (TYPE_TARGET_TYPE (type), NULL, addr, -1,
6c7a06a3	219	stream, options);
72019c9c GM	220
	221	return 0;
	222	}
	223
	224	static void
844781a1 GM	225	print_variable_at_address (struct type *type,
844781a1 GM	226	const gdb_byte *valaddr,
79a45b7d TT	227	struct ui_file *stream,
	228	int recurse,
	229	const struct value_print_options *options)
72019c9c	230	{
5af949e3	231	struct gdbarch *gdbarch = get_type_arch (type);
72019c9c GM	232	CORE_ADDR addr = unpack_pointer (type, valaddr);
	233	struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
	234
	235	fprintf_filtered (stream, "[");
5af949e3	236	fputs_filtered (paddress (gdbarch, addr), stream);
72019c9c GM	237	fprintf_filtered (stream, "] : ");
	238
	239	if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
	240	{
	241	struct value *deref_val =
d8631d21	242	value_at (TYPE_TARGET_TYPE (type), unpack_pointer (type, valaddr));
b8d56208	243
79a45b7d	244	common_val_print (deref_val, stream, recurse, options, current_language);
72019c9c GM	245	}
	246	else
	247	fputs_filtered ("???", stream);
	248	}
	249
844781a1 GM	250
	251	/* m2_print_array_contents - prints out the contents of an
	252	array up to a max_print values.
	253	It prints arrays of char as a string
	254	and all other data types as comma
	255	separated values. */
	256
	257	static void
	258	m2_print_array_contents (struct type type, const gdb_byte valaddr,
	259	int embedded_offset, CORE_ADDR address,
79a45b7d	260	struct ui_file *stream, int recurse,
0e03807e	261	const struct value *val,
79a45b7d TT	262	const struct value_print_options *options,
79a45b7d TT	263	int len)
844781a1 GM	264	{
	265	int eltlen;
	266	CHECK_TYPEDEF (type);
	267
	268	if (TYPE_LENGTH (type) > 0)
	269	{
	270	eltlen = TYPE_LENGTH (type);
79a45b7d	271	if (options->prettyprint_arrays)
844781a1 GM	272	print_spaces_filtered (2 + 2 * recurse, stream);
	273	/* For an array of chars, print with string syntax. */
	274	if (eltlen == 1 &&
	275	((TYPE_CODE (type) == TYPE_CODE_INT)
	276	\|\| ((current_language->la_language == language_m2)
	277	&& (TYPE_CODE (type) == TYPE_CODE_CHAR)))
79a45b7d	278	&& (options->format == 0 \|\| options->format == 's'))
09ca9e2e	279	val_print_string (type, NULL, address, len+1, stream, options);
844781a1 GM	280	else
	281	{
	282	fprintf_filtered (stream, "{");
490f124f	283	val_print_array_elements (type, valaddr, embedded_offset,
0e03807e TT	284	address, stream, recurse, val,
0e03807e TT	285	options, 0);
844781a1 GM	286	fprintf_filtered (stream, "}");
	287	}
	288	}
	289	}
	290
e88acd96 TT	291	/* Decorations for Modula 2. */
	292
	293	static const struct generic_val_print_decorations m2_decorations =
	294	{
	295	"",
	296	" + ",
	297	" * I",
	298	"TRUE",
	299	"FALSE",
	300	"void"
	301	};
844781a1	302
32b72a42	303	/* See val_print for a description of the various parameters of this
d3eab38a	304	function; they are identical. */
c906108c	305
d3eab38a	306	void
fc1a4b47	307	m2_val_print (struct type type, const gdb_byte valaddr, int embedded_offset,
79a45b7d	308	CORE_ADDR address, struct ui_file *stream, int recurse,
0e03807e	309	const struct value *original_value,
79a45b7d	310	const struct value_print_options *options)
c906108c	311	{
5af949e3	312	struct gdbarch *gdbarch = get_type_arch (type);
025bb325	313	unsigned int i = 0; /* Number of characters printed. */
72019c9c GM	314	unsigned len;
	315	struct type *elttype;
	316	unsigned eltlen;
72019c9c GM	317	LONGEST val;
	318	CORE_ADDR addr;
	319
	320	CHECK_TYPEDEF (type);
	321	switch (TYPE_CODE (type))
	322	{
	323	case TYPE_CODE_ARRAY:
	324	if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
	325	{
	326	elttype = check_typedef (TYPE_TARGET_TYPE (type));
	327	eltlen = TYPE_LENGTH (elttype);
	328	len = TYPE_LENGTH (type) / eltlen;
79a45b7d	329	if (options->prettyprint_arrays)
72019c9c GM	330	print_spaces_filtered (2 + 2 * recurse, stream);
	331	/* For an array of chars, print with string syntax. */
	332	if (eltlen == 1 &&
	333	((TYPE_CODE (elttype) == TYPE_CODE_INT)
	334	\|\| ((current_language->la_language == language_m2)
	335	&& (TYPE_CODE (elttype) == TYPE_CODE_CHAR)))
79a45b7d	336	&& (options->format == 0 \|\| options->format == 's'))
72019c9c GM	337	{
	338	/* If requested, look for the first null char and only print
	339	elements up to it. */
79a45b7d	340	if (options->stop_print_at_null)
72019c9c GM	341	{
	342	unsigned int temp_len;
	343
025bb325	344	/* Look for a NULL char. */
72019c9c GM	345	for (temp_len = 0;
72019c9c GM	346	(valaddr + embedded_offset)[temp_len]
79a45b7d	347	&& temp_len < len && temp_len < options->print_max;
72019c9c GM	348	temp_len++);
	349	len = temp_len;
	350	}
	351
6c7a06a3	352	LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type),
be759fcf PM	353	valaddr + embedded_offset, len, NULL,
be759fcf PM	354	0, options);
72019c9c GM	355	i = len;
	356	}
	357	else
	358	{
	359	fprintf_filtered (stream, "{");
490f124f	360	val_print_array_elements (type, valaddr, embedded_offset,
025bb325 MS	361	address, stream,
025bb325 MS	362	recurse, original_value,
0e03807e	363	options, 0);
72019c9c GM	364	fprintf_filtered (stream, "}");
	365	}
	366	break;
	367	}
	368	/* Array of unspecified length: treat like pointer to first elt. */
79a45b7d	369	print_unpacked_pointer (type, address, address, options, stream);
72019c9c GM	370	break;
	371
	372	case TYPE_CODE_PTR:
	373	if (TYPE_CONST (type))
	374	print_variable_at_address (type, valaddr + embedded_offset,
79a45b7d TT	375	stream, recurse, options);
79a45b7d TT	376	else if (options->format && options->format != 's')
ab2188aa PA	377	val_print_scalar_formatted (type, valaddr, embedded_offset,
ab2188aa PA	378	original_value, options, 0, stream);
72019c9c GM	379	else
	380	{
	381	addr = unpack_pointer (type, valaddr + embedded_offset);
79a45b7d	382	print_unpacked_pointer (type, addr, address, options, stream);
72019c9c GM	383	}
	384	break;
	385
72019c9c	386	case TYPE_CODE_UNION:
79a45b7d	387	if (recurse && !options->unionprint)
72019c9c GM	388	{
	389	fprintf_filtered (stream, "{...}");
	390	break;
	391	}
	392	/* Fall through. */
	393	case TYPE_CODE_STRUCT:
	394	if (m2_is_long_set (type))
	395	m2_print_long_set (type, valaddr, embedded_offset, address,
79a45b7d	396	stream);
844781a1 GM	397	else if (m2_is_unbounded_array (type))
844781a1 GM	398	m2_print_unbounded_array (type, valaddr, embedded_offset,
79a45b7d	399	address, stream, recurse, options);
72019c9c GM	400	else
72019c9c GM	401	cp_print_value_fields (type, type, valaddr, embedded_offset,
0e03807e TT	402	address, stream, recurse, original_value,
0e03807e TT	403	options, NULL, 0);
72019c9c GM	404	break;
72019c9c GM	405
72019c9c GM	406	case TYPE_CODE_BITSTRING:
	407	case TYPE_CODE_SET:
	408	elttype = TYPE_INDEX_TYPE (type);
	409	CHECK_TYPEDEF (elttype);
	410	if (TYPE_STUB (elttype))
	411	{
	412	fprintf_filtered (stream, _("<incomplete type>"));
	413	gdb_flush (stream);
	414	break;
	415	}
	416	else
	417	{
	418	struct type *range = elttype;
	419	LONGEST low_bound, high_bound;
	420	int i;
	421	int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING;
	422	int need_comma = 0;
	423
	424	if (is_bitstring)
	425	fputs_filtered ("B'", stream);
	426	else
	427	fputs_filtered ("{", stream);
	428
	429	i = get_discrete_bounds (range, &low_bound, &high_bound);
	430	maybe_bad_bstring:
	431	if (i < 0)
	432	{
	433	fputs_filtered (_("<error value>"), stream);
	434	goto done;
	435	}
	436
	437	for (i = low_bound; i <= high_bound; i++)
	438	{
	439	int element = value_bit_index (type, valaddr + embedded_offset,
	440	i);
b8d56208	441
72019c9c GM	442	if (element < 0)
	443	{
	444	i = element;
	445	goto maybe_bad_bstring;
	446	}
	447	if (is_bitstring)
	448	fprintf_filtered (stream, "%d", element);
	449	else if (element)
	450	{
	451	if (need_comma)
	452	fputs_filtered (", ", stream);
	453	print_type_scalar (range, i, stream);
	454	need_comma = 1;
	455
	456	if (i + 1 <= high_bound
	457	&& value_bit_index (type, valaddr + embedded_offset,
	458	++i))
	459	{
	460	int j = i;
b8d56208	461
72019c9c GM	462	fputs_filtered ("..", stream);
	463	while (i + 1 <= high_bound
	464	&& value_bit_index (type,
	465	valaddr + embedded_offset,
	466	++i))
	467	j = i;
	468	print_type_scalar (range, j, stream);
	469	}
	470	}
	471	}
	472	done:
	473	if (is_bitstring)
	474	fputs_filtered ("'", stream);
	475	else
	476	fputs_filtered ("}", stream);
	477	}
	478	break;
	479
e88acd96 TT	480	case TYPE_CODE_RANGE:
	481	if (TYPE_LENGTH (type) == TYPE_LENGTH (TYPE_TARGET_TYPE (type)))
	482	{
	483	m2_val_print (TYPE_TARGET_TYPE (type), valaddr, embedded_offset,
	484	address, stream, recurse, original_value, options);
	485	break;
	486	}
	487	/* FIXME: create_range_type does not set the unsigned bit in a
	488	range type (I think it probably should copy it from the target
	489	type), so we won't print values which are too large to
	490	fit in a signed integer correctly. */
	491	/* FIXME: Doesn't handle ranges of enums correctly. (Can't just
	492	print with the target type, though, because the size of our type
	493	and the target type might differ). */
	494	/* FALLTHROUGH */
72019c9c	495
e88acd96 TT	496	case TYPE_CODE_REF:
	497	case TYPE_CODE_ENUM:
	498	case TYPE_CODE_FUNC:
	499	case TYPE_CODE_INT:
	500	case TYPE_CODE_FLT:
	501	case TYPE_CODE_METHOD:
	502	case TYPE_CODE_VOID:
72019c9c	503	case TYPE_CODE_ERROR:
72019c9c	504	case TYPE_CODE_UNDEF:
e88acd96 TT	505	case TYPE_CODE_BOOL:
e88acd96 TT	506	case TYPE_CODE_CHAR:
72019c9c	507	default:
e88acd96 TT	508	generic_val_print (type, valaddr, embedded_offset, address,
	509	stream, recurse, original_value, options,
	510	&m2_decorations);
	511	break;
72019c9c GM	512	}
72019c9c GM	513	gdb_flush (stream);
c906108c	514	}