2000-06-14 Pierre Muller <muller@ics.u-strasbg.fr>

	Add support for Pascal language. Part 1: new files.
	* p-exp.y, p-lang.c, p-lang.h, p-typeprint.c, p-valprint.c: New files.

1 files changed, 1145 insertions, 0 deletions

diff --git a/gdb/p-valprint.c b/gdb/p-valprint.c
new file mode 100644
index 0000000..b18e7cf
--- /dev/null
+++ b/gdb/p-valprint.c
@@ -0,0 +1,1145 @@
+/* Support for printing Pascal values for GDB, the GNU debugger.
+   Copyright 2000
+   Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* This file is derived from c-valprint.c */
+
+#include "defs.h"
+#include "obstack.h"
+#include "symtab.h"
+#include "gdbtypes.h"
+#include "expression.h"
+#include "value.h"
+#include "command.h"
+#include "gdbcmd.h"
+#include "gdbcore.h"
+#include "demangle.h"
+#include "valprint.h"
+#include "language.h"
+#include "target.h"
+#include "annotate.h"
+#include "p-lang.h"
+
+
+
+
+/* Print data of type TYPE located at VALADDR (within GDB), which came from
+   the inferior at address ADDRESS, onto stdio stream STREAM according to
+   FORMAT (a letter or 0 for natural format).  The data at VALADDR is in
+   target byte order.
+
+   If the data are a string pointer, returns the number of string characters
+   printed.
+
+   If DEREF_REF is nonzero, then dereference references, otherwise just print
+   them like pointers.
+
+   The PRETTY parameter controls prettyprinting.  */
+
+
+int
+pascal_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref, recurse,
+		  pretty)
+     struct type *type;
+     char *valaddr;
+     int embedded_offset;
+     CORE_ADDR address;
+     struct ui_file *stream;
+     int format;
+     int deref_ref;
+     int recurse;
+     enum val_prettyprint pretty;
+{
+  register 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 (prettyprint_arrays)
+	    {
+	      print_spaces_filtered (2 + 2 * recurse, stream);
+	    }
+	  /* For an array of chars, print with string syntax.  */
+	  if (eltlen == 1 &&
+	      ((TYPE_CODE (elttype) == TYPE_CODE_INT)
+	       || ((current_language->la_language == language_m2)
+		   && (TYPE_CODE (elttype) == TYPE_CODE_CHAR)))
+	      && (format == 0 || format == 's'))
+	    {
+	      /* If requested, look for the first null char and only print
+	         elements up to it.  */
+	      if (stop_print_at_null)
+		{
+		  unsigned int temp_len;
+
+		  /* Look for a NULL char. */
+		  for (temp_len = 0;
+		       (valaddr + embedded_offset)[temp_len]
+		       && temp_len < len && temp_len < print_max;
+		       temp_len++);
+		  len = temp_len;
+		}
+
+	      LA_PRINT_STRING (stream, valaddr + embedded_offset, len, 1, 0);
+	      i = len;
+	    }
+	  else
+	    {
+	      fprintf_filtered (stream, "{");
+	      /* If this is a virtual function table, print the 0th
+	         entry specially, and the rest of the members normally.  */
+	      if (pascal_object_is_vtbl_ptr_type (elttype))
+		{
+		  i = 1;
+		  fprintf_filtered (stream, "%d vtable entries", len - 1);
+		}
+	      else
+		{
+		  i = 0;
+		}
+	      val_print_array_elements (type, valaddr + embedded_offset, address, stream,
+				     format, deref_ref, recurse, pretty, i);
+	      fprintf_filtered (stream, "}");
+	    }
+	  break;
+	}
+      /* Array of unspecified length: treat like pointer to first elt.  */
+      addr = address;
+      goto print_unpacked_pointer;
+
+    case TYPE_CODE_PTR:
+      if (format && format != 's')
+	{
+	  print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
+	  break;
+	}
+      if (vtblprint && pascal_object_is_vtbl_ptr_type (type))
+	{
+	  /* Print the unmangled name if desired.  */
+	  /* Print vtable entry - we only get here if we ARE using
+	     -fvtable_thunks.  (Otherwise, look under TYPE_CODE_STRUCT.) */
+	  print_address_demangle (extract_address (valaddr + embedded_offset, TYPE_LENGTH (type)),
+				  stream, demangle);
+	  break;
+	}
+      elttype = check_typedef (TYPE_TARGET_TYPE (type));
+      if (TYPE_CODE (elttype) == TYPE_CODE_METHOD)
+	{
+	  pascal_object_print_class_method (valaddr + embedded_offset, type, stream);
+	}
+      else if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER)
+	{
+	  pascal_object_print_class_member (valaddr + embedded_offset,
+				 TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type)),
+					    stream, "&");
+	}
+      else
+	{
+	  addr = unpack_pointer (type, valaddr + embedded_offset);
+	print_unpacked_pointer:
+	  elttype = check_typedef (TYPE_TARGET_TYPE (type));
+
+	  if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
+	    {
+	      /* Try to print what function it points to.  */
+	      print_address_demangle (addr, stream, demangle);
+	      /* Return value is irrelevant except for string pointers.  */
+	      return (0);
+	    }
+
+	  if (addressprint && format != 's')
+	    {
+	      print_address_numeric (addr, 1, stream);
+	    }
+
+	  /* For a pointer to char or unsigned char, also print the string
+	     pointed to, unless pointer is null.  */
+	  if (TYPE_LENGTH (elttype) == 1
+	      && TYPE_CODE (elttype) == TYPE_CODE_INT
+	      && (format == 0 || format == 's')
+	      && addr != 0)
+	    {
+	      /* no wide string yet */
+	      i = val_print_string (addr, -1, 1, stream);
+	    }
+	  /* also for pointers to pascal strings */
+	  /* Note: this is Free Pascal specific:
+	     as GDB does not recognize stabs pascal strings
+	     Pascal strings are mapped to records
+	     with lowercase names PM  */
+	  /* I don't know what GPC does :( PM */
+	  if (TYPE_CODE (elttype) == TYPE_CODE_STRUCT &&
+	      TYPE_NFIELDS (elttype) == 2 &&
+	      strcmp (TYPE_FIELDS (elttype)[0].name, "length") == 0 &&
+	      strcmp (TYPE_FIELDS (elttype)[1].name, "st") == 0 &&
+	      addr != 0)
+	    {
+	      char bytelength;
+	      read_memory (addr, &bytelength, 1);
+	      i = val_print_string (addr + 1, bytelength, 1, stream);
+	    }
+	  else if (pascal_object_is_vtbl_member (type))
+	    {
+	      /* print vtbl's nicely */
+	      CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset);
+
+	      struct minimal_symbol *msymbol =
+	      lookup_minimal_symbol_by_pc (vt_address);
+	      if ((msymbol != NULL) &&
+		  (vt_address == SYMBOL_VALUE_ADDRESS (msymbol)))
+		{
+		  fputs_filtered (" <", stream);
+		  fputs_filtered (SYMBOL_SOURCE_NAME (msymbol), stream);
+		  fputs_filtered (">", stream);
+		}
+	      if (vt_address && vtblprint)
+		{
+		  value_ptr vt_val;
+		  struct symbol *wsym = (struct symbol *) NULL;
+		  struct type *wtype;
+		  struct symtab *s;
+		  struct block *block = (struct block *) NULL;
+		  int is_this_fld;
+
+		  if (msymbol != NULL)
+		    wsym = lookup_symbol (SYMBOL_NAME (msymbol), block,
+					  VAR_NAMESPACE, &is_this_fld, &s);
+
+		  if (wsym)
+		    {
+		      wtype = SYMBOL_TYPE (wsym);
+		    }
+		  else
+		    {
+		      wtype = TYPE_TARGET_TYPE (type);
+		    }
+		  vt_val = value_at (wtype, vt_address, NULL);
+		  val_print (VALUE_TYPE (vt_val), VALUE_CONTENTS (vt_val), 0,
+			     VALUE_ADDRESS (vt_val), stream, format,
+			     deref_ref, recurse + 1, pretty);
+		  if (pretty)
+		    {
+		      fprintf_filtered (stream, "\n");
+		      print_spaces_filtered (2 + 2 * recurse, stream);
+		    }
+		}
+	    }
+
+	  /* Return number of characters printed, including the terminating
+	     '\0' if we reached the end.  val_print_string takes care including
+	     the terminating '\0' if necessary.  */
+	  return i;
+	}
+      break;
+
+    case TYPE_CODE_MEMBER:
+      error ("not implemented: member type in pascal_val_print");
+      break;
+
+    case TYPE_CODE_REF:
+      elttype = check_typedef (TYPE_TARGET_TYPE (type));
+      if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER)
+	{
+	  pascal_object_print_class_member (valaddr + embedded_offset,
+					    TYPE_DOMAIN_TYPE (elttype),
+					    stream, "");
+	  break;
+	}
+      if (addressprint)
+	{
+	  fprintf_filtered (stream, "@");
+	  print_address_numeric
+	    (extract_address (valaddr + embedded_offset,
+			      TARGET_PTR_BIT / HOST_CHAR_BIT), 1, stream);
+	  if (deref_ref)
+	    fputs_filtered (": ", stream);
+	}
+      /* De-reference the reference.  */
+      if (deref_ref)
+	{
+	  if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
+	    {
+	      value_ptr deref_val =
+	      value_at
+	      (TYPE_TARGET_TYPE (type),
+	       unpack_pointer (lookup_pointer_type (builtin_type_void),
+			       valaddr + embedded_offset),
+	       NULL);
+	      val_print (VALUE_TYPE (deref_val),
+			 VALUE_CONTENTS (deref_val), 0,
+			 VALUE_ADDRESS (deref_val), stream, format,
+			 deref_ref, recurse + 1, pretty);
+	    }
+	  else
+	    fputs_filtered ("???", stream);
+	}
+      break;
+
+    case TYPE_CODE_UNION:
+      if (recurse && !unionprint)
+	{
+	  fprintf_filtered (stream, "{...}");
+	  break;
+	}
+      /* Fall through.  */
+    case TYPE_CODE_STRUCT:
+      if (vtblprint && pascal_object_is_vtbl_ptr_type (type))
+	{
+	  /* Print the unmangled name if desired.  */
+	  /* Print vtable entry - we only get here if NOT using
+	     -fvtable_thunks.  (Otherwise, look under TYPE_CODE_PTR.) */
+	  print_address_demangle (extract_address (
+						    valaddr + embedded_offset + TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8,
+		  TYPE_LENGTH (TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET))),
+				  stream, demangle);
+	}
+      else
+	{
+	  if ((TYPE_NFIELDS (type) == 2) &&
+	      (strcmp (TYPE_FIELDS (type)[0].name, "length") == 0) &&
+	      (strcmp (TYPE_FIELDS (type)[1].name, "st") == 0))
+	    {
+	      len = (*(valaddr + embedded_offset)) & 0xff;
+	      LA_PRINT_STRING (stream, valaddr + embedded_offset + 1, len, /* width ?? */ 0, 0);
+	    }
+	  else
+	    pascal_object_print_value_fields (type, valaddr + embedded_offset, address, stream, format,
+					      recurse, pretty, NULL, 0);
+	}
+      break;
+
+    case TYPE_CODE_ENUM:
+      if (format)
+	{
+	  print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
+	  break;
+	}
+      len = TYPE_NFIELDS (type);
+      val = unpack_long (type, valaddr + embedded_offset);
+      for (i = 0; i < len; i++)
+	{
+	  QUIT;
+	  if (val == TYPE_FIELD_BITPOS (type, i))
+	    {
+	      break;
+	    }
+	}
+      if (i < len)
+	{
+	  fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
+	}
+      else
+	{
+	  print_longest (stream, 'd', 0, val);
+	}
+      break;
+
+    case TYPE_CODE_FUNC:
+      if (format)
+	{
+	  print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
+	  break;
+	}
+      /* FIXME, we should consider, at least for ANSI C language, eliminating
+         the distinction made between FUNCs and POINTERs to FUNCs.  */
+      fprintf_filtered (stream, "{");
+      type_print (type, "", stream, -1);
+      fprintf_filtered (stream, "} ");
+      /* Try to print what function it points to, and its address.  */
+      print_address_demangle (address, stream, demangle);
+      break;
+
+    case TYPE_CODE_BOOL:
+      format = format ? format : output_format;
+      if (format)
+	print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
+      else
+	{
+	  val = unpack_long (type, valaddr + embedded_offset);
+	  if (val == 0)
+	    fputs_filtered ("false", stream);
+	  else if (val == 1)
+	    fputs_filtered ("true", stream);
+	  else
+	    {
+	      fputs_filtered ("true (", stream);
+	      fprintf_filtered (stream, "%ld)", (long int) val);
+	    }
+	}
+      break;
+
+    case TYPE_CODE_RANGE:
+      /* FIXME: create_range_type does not set the unsigned bit in a
+         range type (I think it probably should copy it from the target
+         type), so we won't print values which are too large to
+         fit in a signed integer correctly.  */
+      /* FIXME: Doesn't handle ranges of enums correctly.  (Can't just
+         print with the target type, though, because the size of our type
+         and the target type might differ).  */
+      /* FALLTHROUGH */
+
+    case TYPE_CODE_INT:
+      format = format ? format : output_format;
+      if (format)
+	{
+	  print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
+	}
+      else
+	{
+	  val_print_type_code_int (type, valaddr + embedded_offset, stream);
+	}
+      break;
+
+    case TYPE_CODE_CHAR:
+      format = format ? format : output_format;
+      if (format)
+	{
+	  print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
+	}
+      else
+	{
+	  val = unpack_long (type, valaddr + embedded_offset);
+	  if (TYPE_UNSIGNED (type))
+	    fprintf_filtered (stream, "%u", (unsigned int) val);
+	  else
+	    fprintf_filtered (stream, "%d", (int) val);
+	  fputs_filtered (" ", stream);
+	  LA_PRINT_CHAR ((unsigned char) val, stream);
+	}
+      break;
+
+    case TYPE_CODE_FLT:
+      if (format)
+	{
+	  print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
+	}
+      else
+	{
+	  print_floating (valaddr + embedded_offset, type, stream);
+	}
+      break;
+
+    case TYPE_CODE_BITSTRING:
+    case TYPE_CODE_SET:
+      elttype = TYPE_INDEX_TYPE (type);
+      CHECK_TYPEDEF (elttype);
+      if (TYPE_FLAGS (elttype) & TYPE_FLAG_STUB)
+	{
+	  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 pascal type code %d in symbol table.", TYPE_CODE (type));
+    }
+  gdb_flush (stream);
+  return (0);
+}
+
+int
+pascal_value_print (val, stream, format, pretty)
+     value_ptr val;
+     struct ui_file *stream;
+     int format;
+     enum val_prettyprint pretty;
+{
+  struct type *type = VALUE_TYPE (val);
+
+  /* If it is a pointer, indicate what it points to.
+
+     Print type also if it is a reference.
+
+     Object pascal: if it is a member pointer, we will take care
+     of that when we print it.  */
+  if (TYPE_CODE (type) == TYPE_CODE_PTR ||
+      TYPE_CODE (type) == TYPE_CODE_REF)
+    {
+      /* Hack:  remove (char *) for char strings.  Their
+         type is indicated by the quoted string anyway. */
+      if (TYPE_CODE (type) == TYPE_CODE_PTR &&
+	  TYPE_NAME (type) == NULL &&
+	  TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL &&
+	  STREQ (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char"))
+	{
+	  /* Print nothing */
+	}
+      else
+	{
+	  fprintf_filtered (stream, "(");
+	  type_print (type, "", stream, -1);
+	  fprintf_filtered (stream, ") ");
+	}
+    }
+  return val_print (type, VALUE_CONTENTS (val), VALUE_EMBEDDED_OFFSET (val),
+		    VALUE_ADDRESS (val) + VALUE_OFFSET (val),
+		    stream, format, 1, 0, pretty);
+}
+
+
+/******************************************************************************
+                    Inserted from cp-valprint
+******************************************************************************/
+
+extern int vtblprint;		/* Controls printing of vtbl's */
+extern int objectprint;		/* Controls looking up an object's derived type
+				   using what we find in its vtables.  */
+static int pascal_static_field_print;	/* Controls printing of static fields. */
+
+static struct obstack dont_print_vb_obstack;
+static struct obstack dont_print_statmem_obstack;
+
+static void
+  pascal_object_print_static_field (struct type *, value_ptr, struct ui_file *, int, int,
+				    enum val_prettyprint);
+
+static void
+  pascal_object_print_value (struct type *, char *, CORE_ADDR, struct ui_file *,
+			     int, int, enum val_prettyprint, struct type **);
+
+void
+pascal_object_print_class_method (valaddr, type, stream)
+     char *valaddr;
+     struct type *type;
+     struct ui_file *stream;
+{
+  struct type *domain;
+  struct fn_field *f = NULL;
+  int j = 0;
+  int len2;
+  int offset;
+  char *kind = "";
+  CORE_ADDR addr;
+  struct symbol *sym;
+  unsigned len;
+  unsigned int i;
+  struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
+
+  domain = TYPE_DOMAIN_TYPE (target_type);
+  if (domain == (struct type *) NULL)
+    {
+      fprintf_filtered (stream, "<unknown>");
+      return;
+    }
+  addr = unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr);
+  if (METHOD_PTR_IS_VIRTUAL (addr))
+    {
+      offset = METHOD_PTR_TO_VOFFSET (addr);
+      len = TYPE_NFN_FIELDS (domain);
+      for (i = 0; i < len; i++)
+	{
+	  f = TYPE_FN_FIELDLIST1 (domain, i);
+	  len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i);
+
+	  for (j = 0; j < len2; j++)
+	    {
+	      QUIT;
+	      if (TYPE_FN_FIELD_VOFFSET (f, j) == offset)
+		{
+		  if (TYPE_FN_FIELD_STUB (f, j))
+		    check_stub_method (domain, i, j);
+		  kind = "virtual ";
+		  goto common;
+		}
+	    }
+	}
+    }
+  else
+    {
+      sym = find_pc_function (addr);
+      if (sym == 0)
+	{
+	  error ("invalid pointer to member function");
+	}
+      len = TYPE_NFN_FIELDS (domain);
+      for (i = 0; i < len; i++)
+	{
+	  f = TYPE_FN_FIELDLIST1 (domain, i);
+	  len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i);
+
+	  for (j = 0; j < len2; j++)
+	    {
+	      QUIT;
+	      if (TYPE_FN_FIELD_STUB (f, j))
+		check_stub_method (domain, i, j);
+	      if (STREQ (SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j)))
+		{
+		  goto common;
+		}
+	    }
+	}
+    }
+common:
+  if (i < len)
+    {
+      char *demangled_name;
+
+      fprintf_filtered (stream, "&");
+      fprintf_filtered (stream, kind);
+      demangled_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (f, j),
+				       DMGL_ANSI | DMGL_PARAMS);
+      if (demangled_name == NULL)
+	fprintf_filtered (stream, "<badly mangled name %s>",
+			  TYPE_FN_FIELD_PHYSNAME (f, j));
+      else
+	{
+	  fputs_filtered (demangled_name, stream);
+	  free (demangled_name);
+	}
+    }
+  else
+    {
+      fprintf_filtered (stream, "(");
+      type_print (type, "", stream, -1);
+      fprintf_filtered (stream, ") %d", (int) addr >> 3);
+    }
+}
+
+/* It was changed to this after 2.4.5.  */
+const char pascal_vtbl_ptr_name[] =
+{'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0};
+
+/* Return truth value for assertion that TYPE is of the type
+   "pointer to virtual function".  */
+
+int
+pascal_object_is_vtbl_ptr_type (type)
+     struct type *type;
+{
+  char *typename = type_name_no_tag (type);
+
+  return (typename != NULL
+	  && (STREQ (typename, pascal_vtbl_ptr_name)));
+}
+
+/* Return truth value for the assertion that TYPE is of the type
+   "pointer to virtual function table".  */
+
+int
+pascal_object_is_vtbl_member (type)
+     struct type *type;
+{
+  if (TYPE_CODE (type) == TYPE_CODE_PTR)
+    {
+      type = TYPE_TARGET_TYPE (type);
+      if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
+	{
+	  type = TYPE_TARGET_TYPE (type);
+	  if (TYPE_CODE (type) == TYPE_CODE_STRUCT	/* if not using thunks */
+	      || TYPE_CODE (type) == TYPE_CODE_PTR)	/* if using thunks */
+	    {
+	      /* Virtual functions tables are full of pointers
+	         to virtual functions. */
+	      return pascal_object_is_vtbl_ptr_type (type);
+	    }
+	}
+    }
+  return 0;
+}
+
+/* Mutually recursive subroutines of pascal_object_print_value and c_val_print to
+   print out a structure's fields: pascal_object_print_value_fields and pascal_object_print_value.
+
+   TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the
+   same meanings as in pascal_object_print_value and c_val_print.
+
+   DONT_PRINT is an array of baseclass types that we
+   should not print, or zero if called from top level.  */
+
+void
+pascal_object_print_value_fields (type, valaddr, address, stream, format, recurse, pretty,
+				  dont_print_vb, dont_print_statmem)
+     struct type *type;
+     char *valaddr;
+     CORE_ADDR address;
+     struct ui_file *stream;
+     int format;
+     int recurse;
+     enum val_prettyprint pretty;
+     struct type **dont_print_vb;
+     int dont_print_statmem;
+{
+  int i, len, n_baseclasses;
+  struct obstack tmp_obstack;
+  char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack);
+
+  CHECK_TYPEDEF (type);
+
+  fprintf_filtered (stream, "{");
+  len = TYPE_NFIELDS (type);
+  n_baseclasses = TYPE_N_BASECLASSES (type);
+
+  /* Print out baseclasses such that we don't print
+     duplicates of virtual baseclasses.  */
+  if (n_baseclasses > 0)
+    pascal_object_print_value (type, valaddr, address, stream,
+			       format, recurse + 1, pretty, dont_print_vb);
+
+  if (!len && n_baseclasses == 1)
+    fprintf_filtered (stream, "<No data fields>");
+  else
+    {
+      extern int inspect_it;
+      int fields_seen = 0;
+
+      if (dont_print_statmem == 0)
+	{
+	  /* If we're at top level, carve out a completely fresh
+	     chunk of the obstack and use that until this particular
+	     invocation returns.  */
+	  tmp_obstack = dont_print_statmem_obstack;
+	  obstack_finish (&dont_print_statmem_obstack);
+	}
+
+      for (i = n_baseclasses; i < len; i++)
+	{
+	  /* If requested, skip printing of static fields.  */
+	  if (!pascal_static_field_print && TYPE_FIELD_STATIC (type, i))
+	    continue;
+	  if (fields_seen)
+	    fprintf_filtered (stream, ", ");
+	  else if (n_baseclasses > 0)
+	    {
+	      if (pretty)
+		{
+		  fprintf_filtered (stream, "\n");
+		  print_spaces_filtered (2 + 2 * recurse, stream);
+		  fputs_filtered ("members of ", stream);
+		  fputs_filtered (type_name_no_tag (type), stream);
+		  fputs_filtered (": ", stream);
+		}
+	    }
+	  fields_seen = 1;
+
+	  if (pretty)
+	    {
+	      fprintf_filtered (stream, "\n");
+	      print_spaces_filtered (2 + 2 * recurse, stream);
+	    }
+	  else
+	    {
+	      wrap_here (n_spaces (2 + 2 * recurse));
+	    }
+	  if (inspect_it)
+	    {
+	      if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
+		fputs_filtered ("\"( ptr \"", stream);
+	      else
+		fputs_filtered ("\"( nodef \"", stream);
+	      if (TYPE_FIELD_STATIC (type, i))
+		fputs_filtered ("static ", stream);
+	      fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
+				       language_cplus,
+				       DMGL_PARAMS | DMGL_ANSI);
+	      fputs_filtered ("\" \"", stream);
+	      fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
+				       language_cplus,
+				       DMGL_PARAMS | DMGL_ANSI);
+	      fputs_filtered ("\") \"", stream);
+	    }
+	  else
+	    {
+	      annotate_field_begin (TYPE_FIELD_TYPE (type, i));
+
+	      if (TYPE_FIELD_STATIC (type, i))
+		fputs_filtered ("static ", stream);
+	      fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
+				       language_cplus,
+				       DMGL_PARAMS | DMGL_ANSI);
+	      annotate_field_name_end ();
+	      fputs_filtered (" = ", stream);
+	      annotate_field_value ();
+	    }
+
+	  if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i))
+	    {
+	      value_ptr v;
+
+	      /* Bitfields require special handling, especially due to byte
+	         order problems.  */
+	      if (TYPE_FIELD_IGNORE (type, i))
+		{
+		  fputs_filtered ("<optimized out or zero length>", stream);
+		}
+	      else
+		{
+		  v = value_from_longest (TYPE_FIELD_TYPE (type, i),
+				   unpack_field_as_long (type, valaddr, i));
+
+		  val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0, 0,
+			     stream, format, 0, recurse + 1, pretty);
+		}
+	    }
+	  else
+	    {
+	      if (TYPE_FIELD_IGNORE (type, i))
+		{
+		  fputs_filtered ("<optimized out or zero length>", stream);
+		}
+	      else if (TYPE_FIELD_STATIC (type, i))
+		{
+		  /* value_ptr v = value_static_field (type, i); v4.17 specific */
+		  value_ptr v;
+		  v = value_from_longest (TYPE_FIELD_TYPE (type, i),
+				   unpack_field_as_long (type, valaddr, i));
+
+		  if (v == NULL)
+		    fputs_filtered ("<optimized out>", stream);
+		  else
+		    pascal_object_print_static_field (TYPE_FIELD_TYPE (type, i), v,
+						stream, format, recurse + 1,
+						      pretty);
+		}
+	      else
+		{
+		  /* val_print (TYPE_FIELD_TYPE (type, i),
+		     valaddr + TYPE_FIELD_BITPOS (type, i) / 8,
+		     address + TYPE_FIELD_BITPOS (type, i) / 8, 0,
+		     stream, format, 0, recurse + 1, pretty); */
+		  val_print (TYPE_FIELD_TYPE (type, i),
+			     valaddr, TYPE_FIELD_BITPOS (type, i) / 8,
+			     address + TYPE_FIELD_BITPOS (type, i) / 8,
+			     stream, format, 0, recurse + 1, pretty);
+		}
+	    }
+	  annotate_field_end ();
+	}
+
+      if (dont_print_statmem == 0)
+	{
+	  /* Free the space used to deal with the printing
+	     of the members from top level.  */
+	  obstack_free (&dont_print_statmem_obstack, last_dont_print);
+	  dont_print_statmem_obstack = tmp_obstack;
+	}
+
+      if (pretty)
+	{
+	  fprintf_filtered (stream, "\n");
+	  print_spaces_filtered (2 * recurse, stream);
+	}
+    }
+  fprintf_filtered (stream, "}");
+}
+
+/* Special val_print routine to avoid printing multiple copies of virtual
+   baseclasses.  */
+
+void
+pascal_object_print_value (type, valaddr, address, stream, format, recurse, pretty,
+			   dont_print_vb)
+     struct type *type;
+     char *valaddr;
+     CORE_ADDR address;
+     struct ui_file *stream;
+     int format;
+     int recurse;
+     enum val_prettyprint pretty;
+     struct type **dont_print_vb;
+{
+  struct obstack tmp_obstack;
+  struct type **last_dont_print
+  = (struct type **) obstack_next_free (&dont_print_vb_obstack);
+  int i, n_baseclasses = TYPE_N_BASECLASSES (type);
+
+  if (dont_print_vb == 0)
+    {
+      /* If we're at top level, carve out a completely fresh
+         chunk of the obstack and use that until this particular
+         invocation returns.  */
+      tmp_obstack = dont_print_vb_obstack;
+      /* Bump up the high-water mark.  Now alpha is omega.  */
+      obstack_finish (&dont_print_vb_obstack);
+    }
+
+  for (i = 0; i < n_baseclasses; i++)
+    {
+      int boffset;
+      struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
+      char *basename = TYPE_NAME (baseclass);
+      char *base_valaddr;
+
+      if (BASETYPE_VIA_VIRTUAL (type, i))
+	{
+	  struct type **first_dont_print
+	  = (struct type **) obstack_base (&dont_print_vb_obstack);
+
+	  int j = (struct type **) obstack_next_free (&dont_print_vb_obstack)
+	  - first_dont_print;
+
+	  while (--j >= 0)
+	    if (baseclass == first_dont_print[j])
+	      goto flush_it;
+
+	  obstack_ptr_grow (&dont_print_vb_obstack, baseclass);
+	}
+
+      boffset = baseclass_offset (type, i, valaddr, address);
+
+      if (pretty)
+	{
+	  fprintf_filtered (stream, "\n");
+	  print_spaces_filtered (2 * recurse, stream);
+	}
+      fputs_filtered ("<", stream);
+      /* Not sure what the best notation is in the case where there is no
+         baseclass name.  */
+
+      fputs_filtered (basename ? basename : "", stream);
+      fputs_filtered ("> = ", stream);
+
+      /* The virtual base class pointer might have been clobbered by the
+         user program. Make sure that it still points to a valid memory
+         location.  */
+
+      if (boffset != -1 && (boffset < 0 || boffset >= TYPE_LENGTH (type)))
+	{
+	  base_valaddr = (char *) alloca (TYPE_LENGTH (baseclass));
+	  if (target_read_memory (address + boffset, base_valaddr,
+				  TYPE_LENGTH (baseclass)) != 0)
+	    boffset = -1;
+	}
+      else
+	base_valaddr = valaddr + boffset;
+
+      if (boffset == -1)
+	fprintf_filtered (stream, "<invalid address>");
+      else
+	pascal_object_print_value_fields (baseclass, base_valaddr, address + boffset,
+					  stream, format, recurse, pretty,
+		     (struct type **) obstack_base (&dont_print_vb_obstack),
+					  0);
+      fputs_filtered (", ", stream);
+
+    flush_it:
+      ;
+    }
+
+  if (dont_print_vb == 0)
+    {
+      /* Free the space used to deal with the printing
+         of this type from top level.  */
+      obstack_free (&dont_print_vb_obstack, last_dont_print);
+      /* Reset watermark so that we can continue protecting
+         ourselves from whatever we were protecting ourselves.  */
+      dont_print_vb_obstack = tmp_obstack;
+    }
+}
+
+/* Print value of a static member.
+   To avoid infinite recursion when printing a class that contains
+   a static instance of the class, we keep the addresses of all printed
+   static member classes in an obstack and refuse to print them more
+   than once.
+
+   VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY
+   have the same meanings as in c_val_print.  */
+
+static void
+pascal_object_print_static_field (type, val, stream, format, recurse, pretty)
+     struct type *type;
+     value_ptr val;
+     struct ui_file *stream;
+     int format;
+     int recurse;
+     enum val_prettyprint pretty;
+{
+  if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
+    {
+      CORE_ADDR *first_dont_print;
+      int i;
+
+      first_dont_print
+	= (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack);
+      i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack)
+	- first_dont_print;
+
+      while (--i >= 0)
+	{
+	  if (VALUE_ADDRESS (val) == first_dont_print[i])
+	    {
+	      fputs_filtered ("<same as static member of an already seen type>",
+			      stream);
+	      return;
+	    }
+	}
+
+      obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val),
+		    sizeof (CORE_ADDR));
+
+      CHECK_TYPEDEF (type);
+      pascal_object_print_value_fields (type, VALUE_CONTENTS (val), VALUE_ADDRESS (val),
+				  stream, format, recurse, pretty, NULL, 1);
+      return;
+    }
+  val_print (type, VALUE_CONTENTS (val), 0, VALUE_ADDRESS (val),
+	     stream, format, 0, recurse, pretty);
+}
+
+void
+pascal_object_print_class_member (valaddr, domain, stream, prefix)
+     char *valaddr;
+     struct type *domain;
+     struct ui_file *stream;
+     char *prefix;
+{
+
+  /* VAL is a byte offset into the structure type DOMAIN.
+     Find the name of the field for that offset and
+     print it.  */
+  int extra = 0;
+  int bits = 0;
+  register unsigned int i;
+  unsigned len = TYPE_NFIELDS (domain);
+  /* @@ Make VAL into bit offset */
+  LONGEST val = unpack_long (builtin_type_int, valaddr) << 3;
+  for (i = TYPE_N_BASECLASSES (domain); i < len; i++)
+    {
+      int bitpos = TYPE_FIELD_BITPOS (domain, i);
+      QUIT;
+      if (val == bitpos)
+	break;
+      if (val < bitpos && i != 0)
+	{
+	  /* Somehow pointing into a field.  */
+	  i -= 1;
+	  extra = (val - TYPE_FIELD_BITPOS (domain, i));
+	  if (extra & 0x7)
+	    bits = 1;
+	  else
+	    extra >>= 3;
+	  break;
+	}
+    }
+  if (i < len)
+    {
+      char *name;
+      fprintf_filtered (stream, prefix);
+      name = type_name_no_tag (domain);
+      if (name)
+	fputs_filtered (name, stream);
+      else
+	pascal_type_print_base (domain, stream, 0, 0);
+      fprintf_filtered (stream, "::");
+      fputs_filtered (TYPE_FIELD_NAME (domain, i), stream);
+      if (extra)
+	fprintf_filtered (stream, " + %d bytes", extra);
+      if (bits)
+	fprintf_filtered (stream, " (offset in bits)");
+    }
+  else
+    fprintf_filtered (stream, "%ld", (long int) (val >> 3));
+}
+
+
+void
+_initialize_pascal_valprint ()
+{
+  add_show_from_set
+    (add_set_cmd ("pascal_static-members", class_support, var_boolean,
+		  (char *) &pascal_static_field_print,
+		  "Set printing of pascal static members.",
+		  &setprintlist),
+     &showprintlist);
+  /* Turn on printing of static fields.  */
+  pascal_static_field_print = 1;
+
+}