X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fc-lang.c;h=40c417256bf9f475b64f17079cdf9b0433aae647;hb=6cc55c64eda17f5c5f1816b60f8960134939d450;hp=6bbd6d9829622a59a5eff3e8b64d52608be73c71;hpb=234b45d446cc127c7cbb5bfb39151b86795ffe3d;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/c-lang.c b/gdb/c-lang.c
index 6bbd6d9829..40c417256b 100644
--- a/gdb/c-lang.c
+++ b/gdb/c-lang.c
@@ -1,12 +1,13 @@
 /* C language support routines for GDB, the GNU debugger.
-   Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002
-   Free Software Foundation, Inc.
+
+   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002, 2003,
+   2004, 2005, 2007, 2008, 2009, 2010 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
+   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,
@@ -15,9 +16,7 @@
    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.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
 #include "symtab.h"
@@ -30,48 +29,338 @@
 #include "macroscope.h"
 #include "gdb_assert.h"
 #include "charset.h"
+#include "gdb_string.h"
+#include "demangle.h"
+#include "cp-abi.h"
+#include "cp-support.h"
+#include "gdb_obstack.h"
+#include <ctype.h>
 
 extern void _initialize_c_language (void);
-static void c_emit_char (int c, struct ui_file * stream, int quoter);
 
-/* Print the character C on STREAM as part of the contents of a literal
-   string whose delimiter is QUOTER.  Note that that format for printing
-   characters and strings is language specific. */
+/* Given a C string type, STR_TYPE, return the corresponding target
+   character set name.  */
 
-static void
-c_emit_char (register int c, struct ui_file *stream, int quoter)
+static const char *
+charset_for_string_type (enum c_string_type str_type,
+			 struct gdbarch *gdbarch)
 {
-  const char *escape;
-  int host_char;
+  switch (str_type & ~C_CHAR)
+    {
+    case C_STRING:
+      return target_charset (gdbarch);
+    case C_WIDE_STRING:
+      return target_wide_charset (gdbarch);
+    case C_STRING_16:
+      /* FIXME: UTF-16 is not always correct.  */
+      if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
+	return "UTF-16BE";
+      else
+	return "UTF-16LE";
+    case C_STRING_32:
+      /* FIXME: UTF-32 is not always correct.  */
+      if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
+	return "UTF-32BE";
+      else
+	return "UTF-32LE";
+    }
+  internal_error (__FILE__, __LINE__, "unhandled c_string_type");
+}
+
+/* Classify ELTTYPE according to what kind of character it is.  Return
+   the enum constant representing the character type.  Also set
+   *ENCODING to the name of the character set to use when converting
+   characters of this type in target BYTE_ORDER to the host character set.  */
 
-  c &= 0xFF;			/* Avoid sign bit follies */
+static enum c_string_type
+classify_type (struct type *elttype, struct gdbarch *gdbarch,
+	       const char **encoding)
+{
+  enum c_string_type result;
 
-  escape = c_target_char_has_backslash_escape (c);
-  if (escape)
+  /* We loop because ELTTYPE may be a typedef, and we want to
+     successively peel each typedef until we reach a type we
+     understand.  We don't use CHECK_TYPEDEF because that will strip
+     all typedefs at once -- but in C, wchar_t is itself a typedef, so
+     that would do the wrong thing.  */
+  while (elttype)
     {
-      if (quoter == '"' && strcmp (escape, "0") == 0)
-	/* Print nulls embedded in double quoted strings as \000 to
-	   prevent ambiguity.  */
-	fprintf_filtered (stream, "\\000");
+      char *name = TYPE_NAME (elttype);
+
+      if (TYPE_CODE (elttype) == TYPE_CODE_CHAR || !name)
+	{
+	  result = C_CHAR;
+	  goto done;
+	}
+
+      if (!strcmp (name, "wchar_t"))
+	{
+	  result = C_WIDE_CHAR;
+	  goto done;
+	}
+
+      if (!strcmp (name, "char16_t"))
+	{
+	  result = C_CHAR_16;
+	  goto done;
+	}
+
+      if (!strcmp (name, "char32_t"))
+	{
+	  result = C_CHAR_32;
+	  goto done;
+	}
+
+      if (TYPE_CODE (elttype) != TYPE_CODE_TYPEDEF)
+	break;
+
+      /* Call for side effects.  */
+      check_typedef (elttype);
+
+      if (TYPE_TARGET_TYPE (elttype))
+	elttype = TYPE_TARGET_TYPE (elttype);
       else
-	fprintf_filtered (stream, "\\%s", escape);
+	{
+	  /* Perhaps check_typedef did not update the target type.  In
+	     this case, force the lookup again and hope it works out.
+	     It never will for C, but it might for C++.  */
+	  CHECK_TYPEDEF (elttype);
+	}
+    }
+
+  /* Punt.  */
+  result = C_CHAR;
+
+ done:
+  if (encoding)
+    *encoding = charset_for_string_type (result, gdbarch);
+
+  return result;
+}
+
+/* Return true if print_wchar can display W without resorting to a
+   numeric escape, false otherwise.  */
+
+static int
+wchar_printable (gdb_wchar_t w)
+{
+  return (gdb_iswprint (w)
+	  || w == LCST ('\a') || w == LCST ('\b')
+	  || w == LCST ('\f') || w == LCST ('\n')
+	  || w == LCST ('\r') || w == LCST ('\t')
+	  || w == LCST ('\v'));
+}
+
+/* A helper function that converts the contents of STRING to wide
+   characters and then appends them to OUTPUT.  */
+
+static void
+append_string_as_wide (const char *string, struct obstack *output)
+{
+  for (; *string; ++string)
+    {
+      gdb_wchar_t w = gdb_btowc (*string);
+      obstack_grow (output, &w, sizeof (gdb_wchar_t));
     }
-  else if (target_char_to_host (c, &host_char)
-           && host_char_print_literally (host_char))
+}
+
+/* Print a wide character W to OUTPUT.  ORIG is a pointer to the
+   original (target) bytes representing the character, ORIG_LEN is the
+   number of valid bytes.  WIDTH is the number of bytes in a base
+   characters of the type.  OUTPUT is an obstack to which wide
+   characters are emitted.  QUOTER is a (narrow) character indicating
+   the style of quotes surrounding the character to be printed.
+   NEED_ESCAPE is an in/out flag which is used to track numeric
+   escapes across calls.  */
+
+static void
+print_wchar (gdb_wint_t w, const gdb_byte *orig, int orig_len,
+	     int width, enum bfd_endian byte_order, struct obstack *output,
+	     int quoter, int *need_escapep)
+{
+  int need_escape = *need_escapep;
+
+  *need_escapep = 0;
+  if (gdb_iswprint (w) && (!need_escape || (!gdb_iswdigit (w)
+					    && w != LCST ('8')
+					    && w != LCST ('9'))))
     {
-      if (host_char == '\\' || host_char == quoter)
-        fputs_filtered ("\\", stream);
-      fprintf_filtered (stream, "%c", host_char);
+      gdb_wchar_t wchar = w;
+
+      if (w == gdb_btowc (quoter) || w == LCST ('\\'))
+	obstack_grow_wstr (output, LCST ("\\"));
+      obstack_grow (output, &wchar, sizeof (gdb_wchar_t));
     }
   else
-    fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
+    {
+      switch (w)
+	{
+	case LCST ('\a'):
+	  obstack_grow_wstr (output, LCST ("\\a"));
+	  break;
+	case LCST ('\b'):
+	  obstack_grow_wstr (output, LCST ("\\b"));
+	  break;
+	case LCST ('\f'):
+	  obstack_grow_wstr (output, LCST ("\\f"));
+	  break;
+	case LCST ('\n'):
+	  obstack_grow_wstr (output, LCST ("\\n"));
+	  break;
+	case LCST ('\r'):
+	  obstack_grow_wstr (output, LCST ("\\r"));
+	  break;
+	case LCST ('\t'):
+	  obstack_grow_wstr (output, LCST ("\\t"));
+	  break;
+	case LCST ('\v'):
+	  obstack_grow_wstr (output, LCST ("\\v"));
+	  break;
+	default:
+	  {
+	    int i;
+
+	    for (i = 0; i + width <= orig_len; i += width)
+	      {
+		char octal[30];
+		ULONGEST value;
+
+		value = extract_unsigned_integer (&orig[i], width, byte_order);
+		/* If the value fits in 3 octal digits, print it that
+		   way.  Otherwise, print it as a hex escape.  */
+		if (value <= 0777)
+		  sprintf (octal, "\\%.3o", (int) (value & 0777));
+		else
+		  sprintf (octal, "\\x%lx", (long) value);
+		append_string_as_wide (octal, output);
+	      }
+	    /* If we somehow have extra bytes, print them now.  */
+	    while (i < orig_len)
+	      {
+		char octal[5];
+
+		sprintf (octal, "\\%.3o", orig[i] & 0xff);
+		append_string_as_wide (octal, output);
+		++i;
+	      }
+
+	    *need_escapep = 1;
+	  }
+	  break;
+	}
+    }
 }
 
+/* Print the character C on STREAM as part of the contents of a literal
+   string whose delimiter is QUOTER.  Note that that format for printing
+   characters and strings is language specific. */
+
 void
-c_printchar (int c, struct ui_file *stream)
+c_emit_char (int c, struct type *type,
+	     struct ui_file *stream, int quoter)
 {
+  enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
+  struct obstack wchar_buf, output;
+  struct cleanup *cleanups;
+  const char *encoding;
+  gdb_byte *buf;
+  struct wchar_iterator *iter;
+  int need_escape = 0;
+
+  classify_type (type, get_type_arch (type), &encoding);
+
+  buf = alloca (TYPE_LENGTH (type));
+  pack_long (buf, type, c);
+
+  iter = make_wchar_iterator (buf, TYPE_LENGTH (type), encoding,
+			      TYPE_LENGTH (type));
+  cleanups = make_cleanup_wchar_iterator (iter);
+
+  /* This holds the printable form of the wchar_t data.  */
+  obstack_init (&wchar_buf);
+  make_cleanup_obstack_free (&wchar_buf);
+
+  while (1)
+    {
+      int num_chars;
+      gdb_wchar_t *chars;
+      const gdb_byte *buf;
+      size_t buflen;
+      int print_escape = 1;
+      enum wchar_iterate_result result;
+
+      num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen);
+      if (num_chars < 0)
+	break;
+      if (num_chars > 0)
+	{
+	  /* If all characters are printable, print them.  Otherwise,
+	     we're going to have to print an escape sequence.  We
+	     check all characters because we want to print the target
+	     bytes in the escape sequence, and we don't know character
+	     boundaries there.  */
+	  int i;
+
+	  print_escape = 0;
+	  for (i = 0; i < num_chars; ++i)
+	    if (!wchar_printable (chars[i]))
+	      {
+		print_escape = 1;
+		break;
+	      }
+
+	  if (!print_escape)
+	    {
+	      for (i = 0; i < num_chars; ++i)
+		print_wchar (chars[i], buf, buflen, TYPE_LENGTH (type),
+			     byte_order, &wchar_buf, quoter, &need_escape);
+	    }
+	}
+
+      /* This handles the NUM_CHARS == 0 case as well.  */
+      if (print_escape)
+	print_wchar (gdb_WEOF, buf, buflen, TYPE_LENGTH (type), byte_order,
+		     &wchar_buf, quoter, &need_escape);
+    }
+
+  /* The output in the host encoding.  */
+  obstack_init (&output);
+  make_cleanup_obstack_free (&output);
+
+  convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
+			     obstack_base (&wchar_buf),
+			     obstack_object_size (&wchar_buf),
+			     1, &output, translit_char);
+  obstack_1grow (&output, '\0');
+
+  fputs_filtered (obstack_base (&output), stream);
+
+  do_cleanups (cleanups);
+}
+
+void
+c_printchar (int c, struct type *type, struct ui_file *stream)
+{
+  enum c_string_type str_type;
+
+  str_type = classify_type (type, get_type_arch (type), NULL);
+  switch (str_type)
+    {
+    case C_CHAR:
+      break;
+    case C_WIDE_CHAR:
+      fputc_filtered ('L', stream);
+      break;
+    case C_CHAR_16:
+      fputc_filtered ('u', stream);
+      break;
+    case C_CHAR_32:
+      fputc_filtered ('U', stream);
+      break;
+    }
+
   fputc_filtered ('\'', stream);
-  LA_EMIT_CHAR (c, stream, '\'');
+  LA_EMIT_CHAR (c, type, stream, '\'');
   fputc_filtered ('\'', stream);
 }
 
@@ -82,394 +371,680 @@ c_printchar (int c, struct ui_file *stream)
    printing LENGTH characters, or if FORCE_ELLIPSES.  */
 
 void
-c_printstr (struct ui_file *stream, char *string, unsigned int length,
-	    int width, int force_ellipses)
+c_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
+	    unsigned int length, const char *user_encoding, int force_ellipses,
+	    const struct value_print_options *options)
 {
-  register unsigned int i;
+  enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
+  unsigned int i;
   unsigned int things_printed = 0;
   int in_quotes = 0;
   int need_comma = 0;
-  extern int inspect_it;
+  int width = TYPE_LENGTH (type);
+  struct obstack wchar_buf, output;
+  struct cleanup *cleanup;
+  enum c_string_type str_type;
+  const char *type_encoding;
+  const char *encoding;
+  struct wchar_iterator *iter;
+  int finished = 0;
+  int need_escape = 0;
+
+  if (length == -1)
+    {
+      unsigned long current_char = 1;
+
+      for (i = 0; current_char; ++i)
+	{
+	  QUIT;
+	  current_char = extract_unsigned_integer (string + i * width,
+						   width, byte_order);
+	}
+      length = i;
+    }
 
   /* If the string was not truncated due to `set print elements', and
      the last byte of it is a null, we don't print that, in traditional C
      style.  */
   if (!force_ellipses
       && length > 0
-      && (extract_unsigned_integer (string + (length - 1) * width, width)
-          == '\0'))
+      && (extract_unsigned_integer (string + (length - 1) * width,
+				    width, byte_order) == 0))
     length--;
 
+  str_type = (classify_type (type, get_type_arch (type), &type_encoding)
+	      & ~C_CHAR);
+  switch (str_type)
+    {
+    case C_STRING:
+      break;
+    case C_WIDE_STRING:
+      fputs_filtered ("L", stream);
+      break;
+    case C_STRING_16:
+      fputs_filtered ("u", stream);
+      break;
+    case C_STRING_32:
+      fputs_filtered ("U", stream);
+      break;
+    }
+
+  encoding = (user_encoding && *user_encoding) ? user_encoding : type_encoding;
+
   if (length == 0)
     {
       fputs_filtered ("\"\"", stream);
       return;
     }
 
-  for (i = 0; i < length && things_printed < print_max; ++i)
+  /* Arrange to iterate over the characters, in wchar_t form.  */
+  iter = make_wchar_iterator (string, length * width, encoding, width);
+  cleanup = make_cleanup_wchar_iterator (iter);
+
+  /* WCHAR_BUF is the obstack we use to represent the string in
+     wchar_t form.  */
+  obstack_init (&wchar_buf);
+  make_cleanup_obstack_free (&wchar_buf);
+
+  while (!finished && things_printed < options->print_max)
     {
-      /* Position of the character we are examining
-         to see whether it is repeated.  */
-      unsigned int rep1;
-      /* Number of repetitions we have detected so far.  */
-      unsigned int reps;
-      unsigned long current_char;
+      int num_chars;
+      enum wchar_iterate_result result;
+      gdb_wchar_t *chars;
+      const gdb_byte *buf;
+      size_t buflen;
 
       QUIT;
 
       if (need_comma)
 	{
-	  fputs_filtered (", ", stream);
+	  obstack_grow_wstr (&wchar_buf, LCST (", "));
 	  need_comma = 0;
 	}
 
-      current_char = extract_unsigned_integer (string + i * width, width);
-
-      rep1 = i + 1;
-      reps = 1;
-      while (rep1 < length
-	     && extract_unsigned_integer (string + rep1 * width, width)
-	     == current_char)
+      num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen);
+      /* We only look at repetitions when we were able to convert a
+	 single character in isolation.  This makes the code simpler
+	 and probably does the sensible thing in the majority of
+	 cases.  */
+      while (num_chars == 1 && things_printed < options->print_max)
 	{
-	  ++rep1;
-	  ++reps;
-	}
+	  /* Count the number of repetitions.  */
+	  unsigned int reps = 0;
+	  gdb_wchar_t current_char = chars[0];
+	  const gdb_byte *orig_buf = buf;
+	  int orig_len = buflen;
 
-      if (reps > repeat_count_threshold)
-	{
-	  if (in_quotes)
+	  if (need_comma)
 	    {
-	      if (inspect_it)
-		fputs_filtered ("\\\", ", stream);
-	      else
-		fputs_filtered ("\", ", stream);
-	      in_quotes = 0;
+	      obstack_grow_wstr (&wchar_buf, LCST (", "));
+	      need_comma = 0;
+	    }
+
+	  while (num_chars == 1 && current_char == chars[0])
+	    {
+	      num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen);
+	      ++reps;
+	    }
+
+	  /* Emit CURRENT_CHAR according to the repetition count and
+	     options.  */
+	  if (reps > options->repeat_count_threshold)
+	    {
+	      if (in_quotes)
+		{
+		  if (options->inspect_it)
+		    obstack_grow_wstr (&wchar_buf, LCST ("\\\", "));
+		  else
+		    obstack_grow_wstr (&wchar_buf, LCST ("\", "));
+		  in_quotes = 0;
+		}
+	      obstack_grow_wstr (&wchar_buf, LCST ("'"));
+	      need_escape = 0;
+	      print_wchar (current_char, orig_buf, orig_len, width,
+			   byte_order, &wchar_buf, '\'', &need_escape);
+	      obstack_grow_wstr (&wchar_buf, LCST ("'"));
+	      {
+		/* Painful gyrations.  */
+		int j;
+		char *s = xstrprintf (_(" <repeats %u times>"), reps);
+
+		for (j = 0; s[j]; ++j)
+		  {
+		    gdb_wchar_t w = gdb_btowc (s[j]);
+		    obstack_grow (&wchar_buf, &w, sizeof (gdb_wchar_t));
+		  }
+		xfree (s);
+	      }
+	      things_printed += options->repeat_count_threshold;
+	      need_comma = 1;
+	    }
+	  else
+	    {
+	      /* Saw the character one or more times, but fewer than
+		 the repetition threshold.  */
+	      if (!in_quotes)
+		{
+		  if (options->inspect_it)
+		    obstack_grow_wstr (&wchar_buf, LCST ("\\\""));
+		  else
+		    obstack_grow_wstr (&wchar_buf, LCST ("\""));
+		  in_quotes = 1;
+		  need_escape = 0;
+		}
+
+	      while (reps-- > 0)
+		{
+		  print_wchar (current_char, orig_buf, orig_len, width,
+			       byte_order, &wchar_buf, '"', &need_escape);
+		  ++things_printed;
+		}
 	    }
-	  LA_PRINT_CHAR (current_char, stream);
-	  fprintf_filtered (stream, " <repeats %u times>", reps);
-	  i = rep1 - 1;
-	  things_printed += repeat_count_threshold;
-	  need_comma = 1;
 	}
-      else
+
+      /* NUM_CHARS and the other outputs from wchar_iterate are valid
+	 here regardless of which branch was taken above.  */
+      if (num_chars < 0)
+	{
+	  /* Hit EOF.  */
+	  finished = 1;
+	  break;
+	}
+
+      switch (result)
 	{
+	case wchar_iterate_invalid:
 	  if (!in_quotes)
 	    {
-	      if (inspect_it)
-		fputs_filtered ("\\\"", stream);
+	      if (options->inspect_it)
+		obstack_grow_wstr (&wchar_buf, LCST ("\\\""));
 	      else
-		fputs_filtered ("\"", stream);
+		obstack_grow_wstr (&wchar_buf, LCST ("\""));
 	      in_quotes = 1;
 	    }
-	  LA_EMIT_CHAR (current_char, stream, '"');
-	  ++things_printed;
+	  need_escape = 0;
+	  print_wchar (gdb_WEOF, buf, buflen, width, byte_order, &wchar_buf,
+		       '"', &need_escape);
+	  break;
+
+	case wchar_iterate_incomplete:
+	  if (in_quotes)
+	    {
+	      if (options->inspect_it)
+		obstack_grow_wstr (&wchar_buf, LCST ("\\\","));
+	      else
+		obstack_grow_wstr (&wchar_buf, LCST ("\","));
+	      in_quotes = 0;
+	    }
+	  obstack_grow_wstr (&wchar_buf, LCST (" <incomplete sequence "));
+	  print_wchar (gdb_WEOF, buf, buflen, width, byte_order, &wchar_buf,
+		       0, &need_escape);
+	  obstack_grow_wstr (&wchar_buf, LCST (">"));
+	  finished = 1;
+	  break;
 	}
     }
 
   /* Terminate the quotes if necessary.  */
   if (in_quotes)
     {
-      if (inspect_it)
-	fputs_filtered ("\\\"", stream);
+      if (options->inspect_it)
+	obstack_grow_wstr (&wchar_buf, LCST ("\\\""));
       else
-	fputs_filtered ("\"", stream);
+	obstack_grow_wstr (&wchar_buf, LCST ("\""));
     }
 
-  if (force_ellipses || i < length)
-    fputs_filtered ("...", stream);
+  if (force_ellipses || !finished)
+    obstack_grow_wstr (&wchar_buf, LCST ("..."));
+
+  /* OUTPUT is where we collect `char's for printing.  */
+  obstack_init (&output);
+  make_cleanup_obstack_free (&output);
+
+  convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
+			     obstack_base (&wchar_buf),
+			     obstack_object_size (&wchar_buf),
+			     1, &output, translit_char);
+  obstack_1grow (&output, '\0');
+
+  fputs_filtered (obstack_base (&output), stream);
+
+  do_cleanups (cleanup);
 }
 
-/* Create a fundamental C type using default reasonable for the current
-   target machine.
-
-   Some object/debugging file formats (DWARF version 1, COFF, etc) do not
-   define fundamental types such as "int" or "double".  Others (stabs or
-   DWARF version 2, etc) do define fundamental types.  For the formats which
-   don't provide fundamental types, gdb can create such types using this
-   function.
-
-   FIXME:  Some compilers distinguish explicitly signed integral types
-   (signed short, signed int, signed long) from "regular" integral types
-   (short, int, long) in the debugging information.  There is some dis-
-   agreement as to how useful this feature is.  In particular, gcc does
-   not support this.  Also, only some debugging formats allow the
-   distinction to be passed on to a debugger.  For now, we always just
-   use "short", "int", or "long" as the type name, for both the implicit
-   and explicitly signed types.  This also makes life easier for the
-   gdb test suite since we don't have to account for the differences
-   in output depending upon what the compiler and debugging format
-   support.  We will probably have to re-examine the issue when gdb
-   starts taking it's fundamental type information directly from the
-   debugging information supplied by the compiler.  fnf@cygnus.com */
-
-struct type *
-c_create_fundamental_type (struct objfile *objfile, int typeid)
+/* Obtain a C string from the inferior storing it in a newly allocated
+   buffer in BUFFER, which should be freed by the caller.   If the
+   in- and out-parameter *LENGTH is specified at -1, the string is read
+   until a null character of the appropriate width is found, otherwise
+   the string is read to the length of characters specified.
+   The size of a character is determined by the length of the target
+   type of the pointer or  array.  If VALUE is an array with a known
+   length, the function will  not read past the end of the array.
+   On completion, *LENGTH will be set to the size of the string read in
+   characters.  (If a length of -1 is specified, the length returned
+   will not include the null character).  CHARSET is always set to the
+   target charset.  */
+
+void
+c_get_string (struct value *value, gdb_byte **buffer, int *length,
+	      struct type **char_type, const char **charset)
 {
-  register struct type *type = NULL;
+  int err, width;
+  unsigned int fetchlimit;
+  struct type *type = check_typedef (value_type (value));
+  struct type *element_type = TYPE_TARGET_TYPE (type);
+  int req_length = *length;
+  enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
+  enum c_string_type kind;
 
-  switch (typeid)
+  if (element_type == NULL)
+    goto error;
+
+  if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
     {
-    default:
-      /* FIXME:  For now, if we are asked to produce a type not in this
-         language, create the equivalent of a C integer type with the
-         name "<?type?>".  When all the dust settles from the type
-         reconstruction work, this should probably become an error. */
-      type = init_type (TYPE_CODE_INT,
-			TARGET_INT_BIT / TARGET_CHAR_BIT,
-			0, "<?type?>", objfile);
-      warning ("internal error: no C/C++ fundamental type %d", typeid);
-      break;
-    case FT_VOID:
-      type = init_type (TYPE_CODE_VOID,
-			TARGET_CHAR_BIT / TARGET_CHAR_BIT,
-			0, "void", objfile);
-      break;
-    case FT_BOOLEAN:
-      type = init_type (TYPE_CODE_BOOL,
-			TARGET_CHAR_BIT / TARGET_CHAR_BIT,
-			0, "bool", objfile);
-      break;
-    case FT_CHAR:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_CHAR_BIT / TARGET_CHAR_BIT,
-			TYPE_FLAG_NOSIGN, "char", objfile);
-      break;
-    case FT_SIGNED_CHAR:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_CHAR_BIT / TARGET_CHAR_BIT,
-			0, "signed char", objfile);
-      break;
-    case FT_UNSIGNED_CHAR:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_CHAR_BIT / TARGET_CHAR_BIT,
-			TYPE_FLAG_UNSIGNED, "unsigned char", objfile);
-      break;
-    case FT_SHORT:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_SHORT_BIT / TARGET_CHAR_BIT,
-			0, "short", objfile);
-      break;
-    case FT_SIGNED_SHORT:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_SHORT_BIT / TARGET_CHAR_BIT,
-			0, "short", objfile);	/* FIXME-fnf */
-      break;
-    case FT_UNSIGNED_SHORT:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_SHORT_BIT / TARGET_CHAR_BIT,
-			TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
-      break;
-    case FT_INTEGER:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_INT_BIT / TARGET_CHAR_BIT,
-			0, "int", objfile);
-      break;
-    case FT_SIGNED_INTEGER:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_INT_BIT / TARGET_CHAR_BIT,
-			0, "int", objfile);	/* FIXME -fnf */
-      break;
-    case FT_UNSIGNED_INTEGER:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_INT_BIT / TARGET_CHAR_BIT,
-			TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
-      break;
-    case FT_LONG:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_LONG_BIT / TARGET_CHAR_BIT,
-			0, "long", objfile);
-      break;
-    case FT_SIGNED_LONG:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_LONG_BIT / TARGET_CHAR_BIT,
-			0, "long", objfile);	/* FIXME -fnf */
-      break;
-    case FT_UNSIGNED_LONG:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_LONG_BIT / TARGET_CHAR_BIT,
-			TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
-      break;
-    case FT_LONG_LONG:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
-			0, "long long", objfile);
-      break;
-    case FT_SIGNED_LONG_LONG:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
-			0, "signed long long", objfile);
-      break;
-    case FT_UNSIGNED_LONG_LONG:
-      type = init_type (TYPE_CODE_INT,
-			TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
-			TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
-      break;
-    case FT_FLOAT:
-      type = init_type (TYPE_CODE_FLT,
-			TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
-			0, "float", objfile);
-      break;
-    case FT_DBL_PREC_FLOAT:
-      type = init_type (TYPE_CODE_FLT,
-			TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
-			0, "double", objfile);
-      break;
-    case FT_EXT_PREC_FLOAT:
-      type = init_type (TYPE_CODE_FLT,
-			TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
-			0, "long double", objfile);
-      break;
-    case FT_COMPLEX:
-      type = init_type (TYPE_CODE_FLT,
-			2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
-			0, "complex float", objfile);
-      TYPE_TARGET_TYPE (type)
-	= init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
-		     0, "float", objfile);
-      break;
-    case FT_DBL_PREC_COMPLEX:
-      type = init_type (TYPE_CODE_FLT,
-			2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
-			0, "complex double", objfile);
-      TYPE_TARGET_TYPE (type)
-	= init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
-		     0, "double", objfile);
-      break;
-    case FT_EXT_PREC_COMPLEX:
-      type = init_type (TYPE_CODE_FLT,
-			2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
-			0, "complex long double", objfile);
-      TYPE_TARGET_TYPE (type)
-	= init_type (TYPE_CODE_FLT, TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
-		     0, "long double", objfile);
-      break;
-    case FT_TEMPLATE_ARG:
-      type = init_type (TYPE_CODE_TEMPLATE_ARG,
-			0,
-			0, "<template arg>", objfile);
-      break;
+      /* If we know the size of the array, we can use it as a limit on the
+	 number of characters to be fetched.  */
+      if (TYPE_NFIELDS (type) == 1
+	  && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_RANGE)
+	{
+	  LONGEST low_bound, high_bound;
+
+	  get_discrete_bounds (TYPE_FIELD_TYPE (type, 0),
+			       &low_bound, &high_bound);
+	  fetchlimit = high_bound - low_bound + 1;
+	}
+      else
+	fetchlimit = UINT_MAX;
     }
-  return (type);
-}
-
-/* Preprocessing and parsing C and C++ expressions.  */
+  else if (TYPE_CODE (type) == TYPE_CODE_PTR)
+    fetchlimit = UINT_MAX;
+  else
+    /* We work only with arrays and pointers.  */
+    goto error;
 
+  if (! c_textual_element_type (element_type, 0))
+    goto error;
+  kind = classify_type (element_type,
+			get_type_arch (element_type),
+			charset);
+  width = TYPE_LENGTH (element_type);
 
-/* When we find that lexptr (the global var defined in parse.c) is
-   pointing at a macro invocation, we expand the invocation, and call
-   scan_macro_expansion to save the old lexptr here and point lexptr
-   into the expanded text.  When we reach the end of that, we call
-   end_macro_expansion to pop back to the value we saved here.  The
-   macro expansion code promises to return only fully-expanded text,
-   so we don't need to "push" more than one level.
+  /* If the string lives in GDB's memory instead of the inferior's, then we
+     just need to copy it to BUFFER.  Also, since such strings are arrays
+     with known size, FETCHLIMIT will hold the size of the array.  */
+  if ((VALUE_LVAL (value) == not_lval
+       || VALUE_LVAL (value) == lval_internalvar)
+      && fetchlimit != UINT_MAX)
+    {
+      int i;
+      const gdb_byte *contents = value_contents (value);
 
-   This is disgusting, of course.  It would be cleaner to do all macro
-   expansion beforehand, and then hand that to lexptr.  But we don't
-   really know where the expression ends.  Remember, in a command like
+      /* If a length is specified, use that.  */
+      if (*length >= 0)
+	i  = *length;
+      else
+ 	/* Otherwise, look for a null character.  */
+ 	for (i = 0; i < fetchlimit; i++)
+	  if (extract_unsigned_integer (contents + i * width, width,
+					byte_order) == 0)
+ 	    break;
+  
+      /* I is now either a user-defined length, the number of non-null
+ 	 characters, or FETCHLIMIT.  */
+      *length = i * width;
+      *buffer = xmalloc (*length);
+      memcpy (*buffer, contents, *length);
+      err = 0;
+    }
+  else
+    {
+      err = read_string (value_as_address (value), *length, width, fetchlimit,
+  			 byte_order, buffer, length);
+      if (err)
+	{
+	  xfree (*buffer);
+	  error (_("Error reading string from inferior: %s"),
+		 safe_strerror (err));
+	}
+    }
 
-     (gdb) break *ADDRESS if CONDITION
+  /* If the LENGTH is specified at -1, we want to return the string
+     length up to the terminating null character.  If an actual length
+     was specified, we want to return the length of exactly what was
+     read.  */
+  if (req_length == -1)
+    /* If the last character is null, subtract it from LENGTH.  */
+    if (*length > 0
+ 	&& extract_unsigned_integer (*buffer + *length - width, width,
+				     byte_order) == 0)
+      *length -= width;
+  
+  /* The read_string function will return the number of bytes read.
+     If length returned from read_string was > 0, return the number of
+     characters read by dividing the number of bytes by width.  */
+  if (*length != 0)
+     *length = *length / width;
 
-   we evaluate ADDRESS in the scope of the current frame, but we
-   evaluate CONDITION in the scope of the breakpoint's location.  So
-   it's simply wrong to try to macro-expand the whole thing at once.  */
-static char *macro_original_text;
-static char *macro_expanded_text;
+  *char_type = element_type;
 
+  return;
 
-void
-scan_macro_expansion (char *expansion)
+ error:
+  {
+    char *type_str;
+
+    type_str = type_to_string (type);
+    if (type_str)
+      {
+	make_cleanup (xfree, type_str);
+	error (_("Trying to read string with inappropriate type `%s'."),
+	       type_str);
+      }
+    else
+      error (_("Trying to read string with inappropriate type."));
+  }
+}
+
+
+/* Evaluating C and C++ expressions.  */
+
+/* Convert a UCN.  The digits of the UCN start at P and extend no
+   farther than LIMIT.  DEST_CHARSET is the name of the character set
+   into which the UCN should be converted.  The results are written to
+   OUTPUT.  LENGTH is the maximum length of the UCN, either 4 or 8.
+   Returns a pointer to just after the final digit of the UCN.  */
+
+static char *
+convert_ucn (char *p, char *limit, const char *dest_charset,
+	     struct obstack *output, int length)
 {
-  /* We'd better not be trying to push the stack twice.  */
-  gdb_assert (! macro_original_text);
-  gdb_assert (! macro_expanded_text);
+  unsigned long result = 0;
+  gdb_byte data[4];
+  int i;
+
+  for (i = 0; i < length && p < limit && isxdigit (*p); ++i, ++p)
+    result = (result << 4) + host_hex_value (*p);
 
-  /* Save the old lexptr value, so we can return to it when we're done
-     parsing the expanded text.  */
-  macro_original_text = lexptr;
-  lexptr = expansion;
+  for (i = 3; i >= 0; --i)
+    {
+      data[i] = result & 0xff;
+      result >>= 8;
+    }
 
-  /* Save the expanded text, so we can free it when we're finished.  */
-  macro_expanded_text = expansion;
+  convert_between_encodings ("UTF-32BE", dest_charset, data, 4, 4, output,
+			     translit_none);
+
+  return p;
 }
 
+/* Emit a character, VALUE, which was specified numerically, to
+   OUTPUT.  TYPE is the target character type.  */
 
-int
-scanning_macro_expansion (void)
+static void
+emit_numeric_character (struct type *type, unsigned long value,
+			struct obstack *output)
 {
-  return macro_original_text != 0;
+  gdb_byte *buffer;
+
+  buffer = alloca (TYPE_LENGTH (type));
+  pack_long (buffer, type, value);
+  obstack_grow (output, buffer, TYPE_LENGTH (type));
 }
 
+/* Convert an octal escape sequence.  TYPE is the target character
+   type.  The digits of the escape sequence begin at P and extend no
+   farther than LIMIT.  The result is written to OUTPUT.  Returns a
+   pointer to just after the final digit of the escape sequence.  */
 
-void 
-finished_macro_expansion (void)
+static char *
+convert_octal (struct type *type, char *p, char *limit, struct obstack *output)
 {
-  /* There'd better be something to pop back to, and we better have
-     saved a pointer to the start of the expanded text.  */
-  gdb_assert (macro_original_text);
-  gdb_assert (macro_expanded_text);
-
-  /* Pop back to the original text.  */
-  lexptr = macro_original_text;
-  macro_original_text = 0;
-
-  /* Free the expanded text.  */
-  xfree (macro_expanded_text);
-  macro_expanded_text = 0;
+  int i;
+  unsigned long value = 0;
+
+  for (i = 0;
+       i < 3 && p < limit && isdigit (*p) && *p != '8' && *p != '9';
+       ++i)
+    {
+      value = 8 * value + host_hex_value (*p);
+      ++p;
+    }
+
+  emit_numeric_character (type, value, output);
+
+  return p;
 }
 
+/* Convert a hex escape sequence.  TYPE is the target character type.
+   The digits of the escape sequence begin at P and extend no farther
+   than LIMIT.  The result is written to OUTPUT.  Returns a pointer to
+   just after the final digit of the escape sequence.  */
 
-static void
-scan_macro_cleanup (void *dummy)
+static char *
+convert_hex (struct type *type, char *p, char *limit, struct obstack *output)
 {
-  if (macro_original_text)
-    finished_macro_expansion ();
-}
+  unsigned long value = 0;
+
+  while (p < limit && isxdigit (*p))
+    {
+      value = 16 * value + host_hex_value (*p);
+      ++p;
+    }
 
+  emit_numeric_character (type, value, output);
 
-/* We set these global variables before calling c_parse, to tell it
-   how it to find macro definitions for the expression at hand.  */
-macro_lookup_ftype *expression_macro_lookup_func;
-void *expression_macro_lookup_baton;
+  return p;
+}
+
+#define ADVANCE					\
+  do {						\
+    ++p;					\
+    if (p == limit)				\
+      error (_("Malformed escape sequence"));	\
+  } while (0)
 
+/* Convert an escape sequence to a target format.  TYPE is the target
+   character type to use, and DEST_CHARSET is the name of the target
+   character set.  The backslash of the escape sequence is at *P, and
+   the escape sequence will not extend past LIMIT.  The results are
+   written to OUTPUT.  Returns a pointer to just past the final
+   character of the escape sequence.  */
 
-static struct macro_definition *
-null_macro_lookup (const char *name, void *baton)
+static char *
+convert_escape (struct type *type, const char *dest_charset,
+		char *p, char *limit, struct obstack *output)
 {
-  return 0;
+  /* Skip the backslash.  */
+  ADVANCE;
+
+  switch (*p)
+    {
+    case '\\':
+      obstack_1grow (output, '\\');
+      ++p;
+      break;
+
+    case 'x':
+      ADVANCE;
+      if (!isxdigit (*p))
+	error (_("\\x used with no following hex digits."));
+      p = convert_hex (type, p, limit, output);
+      break;
+
+    case '0':
+    case '1':
+    case '2':
+    case '3':
+    case '4':
+    case '5':
+    case '6':
+    case '7':
+      p = convert_octal (type, p, limit, output);
+      break;
+
+    case 'u':
+    case 'U':
+      {
+	int length = *p == 'u' ? 4 : 8;
+
+	ADVANCE;
+	if (!isxdigit (*p))
+	  error (_("\\u used with no following hex digits"));
+	p = convert_ucn (p, limit, dest_charset, output, length);
+      }
+    }
+
+  return p;
 }
 
+/* Given a single string from a (C-specific) OP_STRING list, convert
+   it to a target string, handling escape sequences specially.  The
+   output is written to OUTPUT.  DATA is the input string, which has
+   length LEN.  DEST_CHARSET is the name of the target character set,
+   and TYPE is the type of target character to use.  */
 
-static int
-c_preprocess_and_parse (void)
+static void
+parse_one_string (struct obstack *output, char *data, int len,
+		  const char *dest_charset, struct type *type)
 {
-  /* Set up a lookup function for the macro expander.  */
-  struct macro_scope *scope = 0;
-  struct cleanup *back_to = make_cleanup (free_current_contents, &scope);
+  char *limit;
 
-  if (expression_context_block)
-    scope = sal_macro_scope (find_pc_line (expression_context_pc, 0));
-  else
-    scope = default_macro_scope ();
+  limit = data + len;
 
-  if (scope)
+  while (data < limit)
     {
-      expression_macro_lookup_func = standard_macro_lookup;
-      expression_macro_lookup_baton = (void *) scope;
+      char *p = data;
+
+      /* Look for next escape, or the end of the input.  */
+      while (p < limit && *p != '\\')
+	++p;
+      /* If we saw a run of characters, convert them all.  */
+      if (p > data)
+	convert_between_encodings (host_charset (), dest_charset,
+				   data, p - data, 1, output, translit_none);
+      /* If we saw an escape, convert it.  */
+      if (p < limit)
+	p = convert_escape (type, dest_charset, p, limit, output);
+      data = p;
     }
-  else
+}
+
+/* Expression evaluator for the C language family.  Most operations
+   are delegated to evaluate_subexp_standard; see that function for a
+   description of the arguments.  */
+
+static struct value *
+evaluate_subexp_c (struct type *expect_type, struct expression *exp,
+		   int *pos, enum noside noside)
+{
+  enum exp_opcode op = exp->elts[*pos].opcode;
+
+  switch (op)
     {
-      expression_macro_lookup_func = null_macro_lookup;
-      expression_macro_lookup_baton = 0;      
-    }
+    case OP_STRING:
+      {
+	int oplen, limit;
+	struct type *type;
+	struct obstack output;
+	struct cleanup *cleanup;
+	struct value *result;
+	enum c_string_type dest_type;
+	const char *dest_charset;
 
-  gdb_assert (! macro_original_text);
-  make_cleanup (scan_macro_cleanup, 0);
+	obstack_init (&output);
+	cleanup = make_cleanup_obstack_free (&output);
 
-  {
-    int result = c_parse ();
-    do_cleanups (back_to);
-    return result;
-  }
+	++*pos;
+	oplen = longest_to_int (exp->elts[*pos].longconst);
+
+	++*pos;
+	limit = *pos + BYTES_TO_EXP_ELEM (oplen + 1);
+	dest_type
+	  = (enum c_string_type) longest_to_int (exp->elts[*pos].longconst);
+	switch (dest_type & ~C_CHAR)
+	  {
+	  case C_STRING:
+	    type = language_string_char_type (exp->language_defn,
+					      exp->gdbarch);
+	    break;
+	  case C_WIDE_STRING:
+	    type = lookup_typename (exp->language_defn, exp->gdbarch,
+				    "wchar_t", NULL, 0);
+	    break;
+	  case C_STRING_16:
+	    type = lookup_typename (exp->language_defn, exp->gdbarch,
+				    "char16_t", NULL, 0);
+	    break;
+	  case C_STRING_32:
+	    type = lookup_typename (exp->language_defn, exp->gdbarch,
+				    "char32_t", NULL, 0);
+	    break;
+	  default:
+	    internal_error (__FILE__, __LINE__, "unhandled c_string_type");
+	  }
+
+	/* Ensure TYPE_LENGTH is valid for TYPE.  */
+	check_typedef (type);
+
+	dest_charset = charset_for_string_type (dest_type, exp->gdbarch);
+
+	++*pos;
+	while (*pos < limit)
+	  {
+	    int len;
+
+	    len = longest_to_int (exp->elts[*pos].longconst);
+
+	    ++*pos;
+	    if (noside != EVAL_SKIP)
+	      parse_one_string (&output, &exp->elts[*pos].string, len,
+				dest_charset, type);
+	    *pos += BYTES_TO_EXP_ELEM (len);
+	  }
+
+	/* Skip the trailing length and opcode.  */
+	*pos += 2;
+
+	if (noside == EVAL_SKIP)
+	  {
+	    /* Return a dummy value of the appropriate type.  */
+	    if ((dest_type & C_CHAR) != 0)
+	      result = allocate_value (type);
+	    else
+	      result = value_cstring ("", 0, type);
+	    do_cleanups (cleanup);
+	    return result;
+	  }
+
+	if ((dest_type & C_CHAR) != 0)
+	  {
+	    LONGEST value;
+
+	    if (obstack_object_size (&output) != TYPE_LENGTH (type))
+	      error (_("Could not convert character constant to target character set"));
+	    value = unpack_long (type, obstack_base (&output));
+	    result = value_from_longest (type, value);
+	  }
+	else
+	  {
+	    int i;
+
+	    /* Write the terminating character.  */
+	    for (i = 0; i < TYPE_LENGTH (type); ++i)
+	      obstack_1grow (&output, 0);
+	    result = value_cstring (obstack_base (&output),
+				    obstack_object_size (&output),
+				    type);
+	  }
+	do_cleanups (cleanup);
+	return result;
+      }
+      break;
+
+    default:
+      break;
+    }
+  return evaluate_subexp_standard (expect_type, exp, pos, noside);
 }
 
 
@@ -511,106 +1086,229 @@ const struct op_print c_op_print_tab[] =
   {NULL, 0, 0, 0}
 };
 
-struct type **const (c_builtin_types[]) =
+enum c_primitive_types {
+  c_primitive_type_int,
+  c_primitive_type_long,
+  c_primitive_type_short,
+  c_primitive_type_char,
+  c_primitive_type_float,
+  c_primitive_type_double,
+  c_primitive_type_void,
+  c_primitive_type_long_long,
+  c_primitive_type_signed_char,
+  c_primitive_type_unsigned_char,
+  c_primitive_type_unsigned_short,
+  c_primitive_type_unsigned_int,
+  c_primitive_type_unsigned_long,
+  c_primitive_type_unsigned_long_long,
+  c_primitive_type_long_double,
+  c_primitive_type_complex,
+  c_primitive_type_double_complex,
+  c_primitive_type_decfloat,
+  c_primitive_type_decdouble,
+  c_primitive_type_declong,
+  nr_c_primitive_types
+};
+
+void
+c_language_arch_info (struct gdbarch *gdbarch,
+		      struct language_arch_info *lai)
+{
+  const struct builtin_type *builtin = builtin_type (gdbarch);
+
+  lai->string_char_type = builtin->builtin_char;
+  lai->primitive_type_vector
+    = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1,
+			      struct type *);
+  lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int;
+  lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long;
+  lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short;
+  lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char;
+  lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float;
+  lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double;
+  lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void;
+  lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long;
+  lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char;
+  lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char;
+  lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short;
+  lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int;
+  lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long;
+  lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long;
+  lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double;
+  lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex;
+  lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex;
+  lai->primitive_type_vector [c_primitive_type_decfloat] = builtin->builtin_decfloat;
+  lai->primitive_type_vector [c_primitive_type_decdouble] = builtin->builtin_decdouble;
+  lai->primitive_type_vector [c_primitive_type_declong] = builtin->builtin_declong;
+
+  lai->bool_type_default = builtin->builtin_int;
+}
+
+const struct exp_descriptor exp_descriptor_c = 
 {
-  &builtin_type_int,
-  &builtin_type_long,
-  &builtin_type_short,
-  &builtin_type_char,
-  &builtin_type_float,
-  &builtin_type_double,
-  &builtin_type_void,
-  &builtin_type_long_long,
-  &builtin_type_signed_char,
-  &builtin_type_unsigned_char,
-  &builtin_type_unsigned_short,
-  &builtin_type_unsigned_int,
-  &builtin_type_unsigned_long,
-  &builtin_type_unsigned_long_long,
-  &builtin_type_long_double,
-  &builtin_type_complex,
-  &builtin_type_double_complex,
-  0
+  print_subexp_standard,
+  operator_length_standard,
+  operator_check_standard,
+  op_name_standard,
+  dump_subexp_body_standard,
+  evaluate_subexp_c
 };
 
 const struct language_defn c_language_defn =
 {
   "c",				/* Language name */
   language_c,
-  c_builtin_types,
   range_check_off,
   type_check_off,
   case_sensitive_on,
-  c_preprocess_and_parse,
+  array_row_major,
+  macro_expansion_c,
+  &exp_descriptor_c,
+  c_parse,
   c_error,
-  evaluate_subexp_standard,
+  null_post_parser,
   c_printchar,			/* Print a character constant */
   c_printstr,			/* Function to print string constant */
   c_emit_char,			/* Print a single char */
-  c_create_fundamental_type,	/* Create fundamental type in this language */
   c_print_type,			/* Print a type using appropriate syntax */
+  c_print_typedef,		/* Print a typedef using appropriate syntax */
   c_val_print,			/* Print a value using appropriate syntax */
   c_value_print,		/* Print a top-level value */
-  {"", "", "", ""},		/* Binary format info */
-  {"0%lo", "0", "o", ""},	/* Octal format info */
-  {"%ld", "", "d", ""},		/* Decimal format info */
-  {"0x%lx", "0x", "x", ""},	/* Hex format info */
+  NULL,				/* Language specific skip_trampoline */
+  NULL,				/* name_of_this */
+  basic_lookup_symbol_nonlocal,	/* lookup_symbol_nonlocal */
+  basic_lookup_transparent_type,/* lookup_transparent_type */
+  NULL,				/* Language specific symbol demangler */
+  NULL,				/* Language specific class_name_from_physname */
   c_op_print_tab,		/* expression operators for printing */
   1,				/* c-style arrays */
   0,				/* String lower bound */
-  &builtin_type_char,		/* Type of string elements */
+  default_word_break_characters,
+  default_make_symbol_completion_list,
+  c_language_arch_info,
+  default_print_array_index,
+  default_pass_by_reference,
+  c_get_string,
   LANG_MAGIC
 };
 
-struct type **const (cplus_builtin_types[]) =
-{
-  &builtin_type_int,
-  &builtin_type_long,
-  &builtin_type_short,
-  &builtin_type_char,
-  &builtin_type_float,
-  &builtin_type_double,
-  &builtin_type_void,
-  &builtin_type_long_long,
-  &builtin_type_signed_char,
-  &builtin_type_unsigned_char,
-  &builtin_type_unsigned_short,
-  &builtin_type_unsigned_int,
-  &builtin_type_unsigned_long,
-  &builtin_type_unsigned_long_long,
-  &builtin_type_long_double,
-  &builtin_type_complex,
-  &builtin_type_double_complex,
-  &builtin_type_bool,
-  0
+enum cplus_primitive_types {
+  cplus_primitive_type_int,
+  cplus_primitive_type_long,
+  cplus_primitive_type_short,
+  cplus_primitive_type_char,
+  cplus_primitive_type_float,
+  cplus_primitive_type_double,
+  cplus_primitive_type_void,
+  cplus_primitive_type_long_long,
+  cplus_primitive_type_signed_char,
+  cplus_primitive_type_unsigned_char,
+  cplus_primitive_type_unsigned_short,
+  cplus_primitive_type_unsigned_int,
+  cplus_primitive_type_unsigned_long,
+  cplus_primitive_type_unsigned_long_long,
+  cplus_primitive_type_long_double,
+  cplus_primitive_type_complex,
+  cplus_primitive_type_double_complex,
+  cplus_primitive_type_bool,
+  cplus_primitive_type_decfloat,
+  cplus_primitive_type_decdouble,
+  cplus_primitive_type_declong,
+  nr_cplus_primitive_types
 };
 
+static void
+cplus_language_arch_info (struct gdbarch *gdbarch,
+			  struct language_arch_info *lai)
+{
+  const struct builtin_type *builtin = builtin_type (gdbarch);
+
+  lai->string_char_type = builtin->builtin_char;
+  lai->primitive_type_vector
+    = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_cplus_primitive_types + 1,
+			      struct type *);
+  lai->primitive_type_vector [cplus_primitive_type_int]
+    = builtin->builtin_int;
+  lai->primitive_type_vector [cplus_primitive_type_long]
+    = builtin->builtin_long;
+  lai->primitive_type_vector [cplus_primitive_type_short]
+    = builtin->builtin_short;
+  lai->primitive_type_vector [cplus_primitive_type_char]
+    = builtin->builtin_char;
+  lai->primitive_type_vector [cplus_primitive_type_float]
+    = builtin->builtin_float;
+  lai->primitive_type_vector [cplus_primitive_type_double]
+    = builtin->builtin_double;
+  lai->primitive_type_vector [cplus_primitive_type_void]
+    = builtin->builtin_void;
+  lai->primitive_type_vector [cplus_primitive_type_long_long]
+    = builtin->builtin_long_long;
+  lai->primitive_type_vector [cplus_primitive_type_signed_char]
+    = builtin->builtin_signed_char;
+  lai->primitive_type_vector [cplus_primitive_type_unsigned_char]
+    = builtin->builtin_unsigned_char;
+  lai->primitive_type_vector [cplus_primitive_type_unsigned_short]
+    = builtin->builtin_unsigned_short;
+  lai->primitive_type_vector [cplus_primitive_type_unsigned_int]
+    = builtin->builtin_unsigned_int;
+  lai->primitive_type_vector [cplus_primitive_type_unsigned_long]
+    = builtin->builtin_unsigned_long;
+  lai->primitive_type_vector [cplus_primitive_type_unsigned_long_long]
+    = builtin->builtin_unsigned_long_long;
+  lai->primitive_type_vector [cplus_primitive_type_long_double]
+    = builtin->builtin_long_double;
+  lai->primitive_type_vector [cplus_primitive_type_complex]
+    = builtin->builtin_complex;
+  lai->primitive_type_vector [cplus_primitive_type_double_complex]
+    = builtin->builtin_double_complex;
+  lai->primitive_type_vector [cplus_primitive_type_bool]
+    = builtin->builtin_bool;
+  lai->primitive_type_vector [cplus_primitive_type_decfloat]
+    = builtin->builtin_decfloat;
+  lai->primitive_type_vector [cplus_primitive_type_decdouble]
+    = builtin->builtin_decdouble;
+  lai->primitive_type_vector [cplus_primitive_type_declong]
+    = builtin->builtin_declong;
+
+  lai->bool_type_symbol = "bool";
+  lai->bool_type_default = builtin->builtin_bool;
+}
+
 const struct language_defn cplus_language_defn =
 {
   "c++",			/* Language name */
   language_cplus,
-  cplus_builtin_types,
   range_check_off,
   type_check_off,
   case_sensitive_on,
-  c_preprocess_and_parse,
+  array_row_major,
+  macro_expansion_c,
+  &exp_descriptor_c,
+  c_parse,
   c_error,
-  evaluate_subexp_standard,
+  null_post_parser,
   c_printchar,			/* Print a character constant */
   c_printstr,			/* Function to print string constant */
   c_emit_char,			/* Print a single char */
-  c_create_fundamental_type,	/* Create fundamental type in this language */
   c_print_type,			/* Print a type using appropriate syntax */
+  c_print_typedef,		/* Print a typedef using appropriate syntax */
   c_val_print,			/* Print a value using appropriate syntax */
   c_value_print,		/* Print a top-level value */
-  {"", "", "", ""},		/* Binary format info */
-  {"0%lo", "0", "o", ""},	/* Octal format info */
-  {"%ld", "", "d", ""},		/* Decimal format info */
-  {"0x%lx", "0x", "x", ""},	/* Hex format info */
+  cplus_skip_trampoline,	/* Language specific skip_trampoline */
+  "this",                       /* name_of_this */
+  cp_lookup_symbol_nonlocal,	/* lookup_symbol_nonlocal */
+  cp_lookup_transparent_type,   /* lookup_transparent_type */
+  cplus_demangle,		/* Language specific symbol demangler */
+  cp_class_name_from_physname,  /* Language specific class_name_from_physname */
   c_op_print_tab,		/* expression operators for printing */
   1,				/* c-style arrays */
   0,				/* String lower bound */
-  &builtin_type_char,		/* Type of string elements */
+  default_word_break_characters,
+  default_make_symbol_completion_list,
+  cplus_language_arch_info,
+  default_print_array_index,
+  cp_pass_by_reference,
+  c_get_string,
   LANG_MAGIC
 };
 
@@ -618,28 +1316,80 @@ const struct language_defn asm_language_defn =
 {
   "asm",			/* Language name */
   language_asm,
-  c_builtin_types,
   range_check_off,
   type_check_off,
   case_sensitive_on,
-  c_preprocess_and_parse,
+  array_row_major,
+  macro_expansion_c,
+  &exp_descriptor_c,
+  c_parse,
+  c_error,
+  null_post_parser,
+  c_printchar,			/* Print a character constant */
+  c_printstr,			/* Function to print string constant */
+  c_emit_char,			/* Print a single char */
+  c_print_type,			/* Print a type using appropriate syntax */
+  c_print_typedef,		/* Print a typedef using appropriate syntax */
+  c_val_print,			/* Print a value using appropriate syntax */
+  c_value_print,		/* Print a top-level value */
+  NULL,				/* Language specific skip_trampoline */
+  NULL,				/* name_of_this */
+  basic_lookup_symbol_nonlocal,	/* lookup_symbol_nonlocal */
+  basic_lookup_transparent_type,/* lookup_transparent_type */
+  NULL,				/* Language specific symbol demangler */
+  NULL,				/* Language specific class_name_from_physname */
+  c_op_print_tab,		/* expression operators for printing */
+  1,				/* c-style arrays */
+  0,				/* String lower bound */
+  default_word_break_characters,
+  default_make_symbol_completion_list,
+  c_language_arch_info, /* FIXME: la_language_arch_info.  */
+  default_print_array_index,
+  default_pass_by_reference,
+  c_get_string,
+  LANG_MAGIC
+};
+
+/* The following language_defn does not represent a real language.
+   It just provides a minimal support a-la-C that should allow users
+   to do some simple operations when debugging applications that use
+   a language currently not supported by GDB.  */
+
+const struct language_defn minimal_language_defn =
+{
+  "minimal",			/* Language name */
+  language_minimal,
+  range_check_off,
+  type_check_off,
+  case_sensitive_on,
+  array_row_major,
+  macro_expansion_c,
+  &exp_descriptor_c,
+  c_parse,
   c_error,
-  evaluate_subexp_standard,
+  null_post_parser,
   c_printchar,			/* Print a character constant */
   c_printstr,			/* Function to print string constant */
   c_emit_char,			/* Print a single char */
-  c_create_fundamental_type,	/* Create fundamental type in this language */
   c_print_type,			/* Print a type using appropriate syntax */
+  c_print_typedef,		/* Print a typedef using appropriate syntax */
   c_val_print,			/* Print a value using appropriate syntax */
   c_value_print,		/* Print a top-level value */
-  {"", "", "", ""},		/* Binary format info */
-  {"0%lo", "0", "o", ""},	/* Octal format info */
-  {"%ld", "", "d", ""},		/* Decimal format info */
-  {"0x%lx", "0x", "x", ""},	/* Hex format info */
+  NULL,				/* Language specific skip_trampoline */
+  NULL,				/* name_of_this */
+  basic_lookup_symbol_nonlocal,	/* lookup_symbol_nonlocal */
+  basic_lookup_transparent_type,/* lookup_transparent_type */
+  NULL,				/* Language specific symbol demangler */
+  NULL,				/* Language specific class_name_from_physname */
   c_op_print_tab,		/* expression operators for printing */
   1,				/* c-style arrays */
   0,				/* String lower bound */
-  &builtin_type_char,		/* Type of string elements */
+  default_word_break_characters,
+  default_make_symbol_completion_list,
+  c_language_arch_info,
+  default_print_array_index,
+  default_pass_by_reference,
+  c_get_string,
   LANG_MAGIC
 };
 
@@ -649,4 +1399,5 @@ _initialize_c_language (void)
   add_language (&c_language_defn);
   add_language (&cplus_language_defn);
   add_language (&asm_language_defn);
+  add_language (&minimal_language_defn);
 }