gdb/m2-valprint.c - binutils-gdb - Git at Google

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

    Copyright (C) 1986-2020 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"
 #include "cli/cli-style.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,
 			 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_styled (stream, metadata_style.style (),
 		      " %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)
 {
   CORE_ADDR addr;
   LONGEST len;
   struct value *val;

   type = check_typedef (type);

   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,
 			 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, 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, int embedded_offset,
 	      CORE_ADDR address, struct ui_file *stream, int recurse,
 	      struct value *original_value,
 	      const struct value_print_options *options)
 {
   unsigned len;
   struct type *elttype;
   CORE_ADDR addr;
   const gdb_byte *valaddr = value_contents_for_printing (original_value);

   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);
 	    }
 	  else
 	    {
 	      fprintf_filtered (stream, "{");
 	      val_print_array_elements (type, 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, 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, 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_styled (stream, metadata_style.style (),
 			  _("<incomplete type>"));
 	  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_styled (_("<error value>"), metadata_style.style (),
 			    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), 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, embedded_offset, address,
 			 stream, recurse, original_value, options,
 			 &m2_decorations);
       break;
     }
 }
	/* Support for printing Modula 2 values for GDB, the GNU debugger.

	Copyright (C) 1986-2020 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"
	#include "cli/cli-style.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,
	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_styled (stream, metadata_style.style (),
	" %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)
	{
	CORE_ADDR addr;
	LONGEST len;
	struct value *val;

	type = check_typedef (type);

	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,
	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, 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, int embedded_offset,
	CORE_ADDR address, struct ui_file *stream, int recurse,
	struct value *original_value,
	const struct value_print_options *options)
	{
	unsigned len;
	struct type *elttype;
	CORE_ADDR addr;
	const gdb_byte *valaddr = value_contents_for_printing (original_value);

	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);
	}
	else
	{
	fprintf_filtered (stream, "{");
	val_print_array_elements (type, 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, 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, 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_styled (stream, metadata_style.style (),
	_("<incomplete type>"));
	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_styled (_("<error value>"), metadata_style.style (),
	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), 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, embedded_offset, address,
	stream, recurse, original_value, options,
	&m2_decorations);
	break;
	}
	}