Ejemplo n.º 1
0
/* Standard implementation of print_subexp for use in language_defn
   vectors.  */
void
print_subexp_standard (struct expression *exp, int *pos,
		       struct ui_file *stream, enum precedence prec)
{
  unsigned tem;
  const struct op_print *op_print_tab;
  int pc;
  unsigned nargs;
  char *op_str;
  int assign_modify = 0;
  enum exp_opcode opcode;
  enum precedence myprec = PREC_NULL;
  /* Set to 1 for a right-associative operator.  */
  int assoc = 0;
  struct value *val;
  char *tempstr = NULL;

  op_print_tab = exp->language_defn->la_op_print_tab;
  pc = (*pos)++;
  opcode = exp->elts[pc].opcode;
  switch (opcode)
    {
      /* Common ops */

    case OP_SCOPE:
      myprec = PREC_PREFIX;
      assoc = 0;
      fputs_filtered (type_name_no_tag (exp->elts[pc + 1].type), stream);
      fputs_filtered ("::", stream);
      nargs = longest_to_int (exp->elts[pc + 2].longconst);
      (*pos) += 4 + BYTES_TO_EXP_ELEM (nargs + 1);
      fputs_filtered (&exp->elts[pc + 3].string, stream);
      return;

    case OP_LONG:
      (*pos) += 3;
      value_print (value_from_longest (exp->elts[pc + 1].type,
				       exp->elts[pc + 2].longconst),
		   stream, 0, Val_no_prettyprint);
      return;

    case OP_DOUBLE:
      (*pos) += 3;
      value_print (value_from_double (exp->elts[pc + 1].type,
				      exp->elts[pc + 2].doubleconst),
		   stream, 0, Val_no_prettyprint);
      return;

    case OP_VAR_VALUE:
      {
	struct block *b;
	(*pos) += 3;
	b = exp->elts[pc + 1].block;
	if (b != NULL
	    && BLOCK_FUNCTION (b) != NULL
	    && SYMBOL_PRINT_NAME (BLOCK_FUNCTION (b)) != NULL)
	  {
	    fputs_filtered (SYMBOL_PRINT_NAME (BLOCK_FUNCTION (b)), stream);
	    fputs_filtered ("::", stream);
	  }
	fputs_filtered (SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol), stream);
      }
      return;

    case OP_LAST:
      (*pos) += 2;
      fprintf_filtered (stream, "$%d",
			longest_to_int (exp->elts[pc + 1].longconst));
      return;

    case OP_REGISTER:
      {
	int regnum = longest_to_int (exp->elts[pc + 1].longconst);
	const char *name = user_reg_map_regnum_to_name (current_gdbarch,
							regnum);
	(*pos) += 2;
	fprintf_filtered (stream, "$%s", name);
	return;
      }

    case OP_BOOL:
      (*pos) += 2;
      fprintf_filtered (stream, "%s",
			longest_to_int (exp->elts[pc + 1].longconst)
			? "TRUE" : "FALSE");
      return;

    case OP_INTERNALVAR:
      (*pos) += 2;
      fprintf_filtered (stream, "$%s",
			internalvar_name (exp->elts[pc + 1].internalvar));
      return;

    case OP_FUNCALL:
      (*pos) += 2;
      nargs = longest_to_int (exp->elts[pc + 1].longconst);
      print_subexp (exp, pos, stream, PREC_SUFFIX);
      fputs_filtered (" (", stream);
      for (tem = 0; tem < nargs; tem++)
	{
	  if (tem != 0)
	    fputs_filtered (", ", stream);
	  print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
	}
      fputs_filtered (")", stream);
      return;

    case OP_NAME:
    case OP_EXPRSTRING:
      nargs = longest_to_int (exp->elts[pc + 1].longconst);
      (*pos) += 3 + BYTES_TO_EXP_ELEM (nargs + 1);
      fputs_filtered (&exp->elts[pc + 2].string, stream);
      return;

    case OP_STRING:
      nargs = longest_to_int (exp->elts[pc + 1].longconst);
      (*pos) += 3 + BYTES_TO_EXP_ELEM (nargs + 1);
      /* LA_PRINT_STRING will print using the current repeat count threshold.
         If necessary, we can temporarily set it to zero, or pass it as an
         additional parameter to LA_PRINT_STRING.  -fnf */
      LA_PRINT_STRING (stream, &exp->elts[pc + 2].string, nargs, 1, 0);
      return;

    case OP_BITSTRING:
      nargs = longest_to_int (exp->elts[pc + 1].longconst);
      (*pos)
	+= 3 + BYTES_TO_EXP_ELEM ((nargs + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT);
      fprintf_unfiltered (stream, "B'<unimplemented>'");
      return;

    case OP_OBJC_NSSTRING:	/* Objective-C Foundation Class NSString constant.  */
      nargs = longest_to_int (exp->elts[pc + 1].longconst);
      (*pos) += 3 + BYTES_TO_EXP_ELEM (nargs + 1);
      fputs_filtered ("@\"", stream);
      LA_PRINT_STRING (stream, &exp->elts[pc + 2].string, nargs, 1, 0);
      fputs_filtered ("\"", stream);
      return;

    case OP_OBJC_MSGCALL:
      {			/* Objective C message (method) call.  */
	char *selector;
	(*pos) += 3;
	nargs = longest_to_int (exp->elts[pc + 2].longconst);
	fprintf_unfiltered (stream, "[");
	print_subexp (exp, pos, stream, PREC_SUFFIX);
	if (0 == target_read_string (exp->elts[pc + 1].longconst,
				     &selector, 1024, NULL))
	  {
	    error (_("bad selector"));
	    return;
	  }
	if (nargs)
	  {
	    char *s, *nextS;
	    s = alloca (strlen (selector) + 1);
	    strcpy (s, selector);
	    for (tem = 0; tem < nargs; tem++)
	      {
		nextS = strchr (s, ':');
		*nextS = '\0';
		fprintf_unfiltered (stream, " %s: ", s);
		s = nextS + 1;
		print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
	      }
	  }
	else
	  {
	    fprintf_unfiltered (stream, " %s", selector);
	  }
	fprintf_unfiltered (stream, "]");
	/* "selector" was malloc'd by target_read_string. Free it.  */
	xfree (selector);
	return;
      }

    case OP_ARRAY:
      (*pos) += 3;
      nargs = longest_to_int (exp->elts[pc + 2].longconst);
      nargs -= longest_to_int (exp->elts[pc + 1].longconst);
      nargs++;
      tem = 0;
      if (exp->elts[pc + 4].opcode == OP_LONG
	  && exp->elts[pc + 5].type == builtin_type_char
	  && exp->language_defn->la_language == language_c)
	{
	  /* Attempt to print C character arrays using string syntax.
	     Walk through the args, picking up one character from each
	     of the OP_LONG expression elements.  If any array element
	     does not match our expection of what we should find for
	     a simple string, revert back to array printing.  Note that
	     the last expression element is an explicit null terminator
	     byte, which doesn't get printed. */
	  tempstr = alloca (nargs);
	  pc += 4;
	  while (tem < nargs)
	    {
	      if (exp->elts[pc].opcode != OP_LONG
		  || exp->elts[pc + 1].type != builtin_type_char)
		{
		  /* Not a simple array of char, use regular array printing. */
		  tem = 0;
		  break;
		}
	      else
		{
		  tempstr[tem++] =
		    longest_to_int (exp->elts[pc + 2].longconst);
		  pc += 4;
		}
	    }
	}
      if (tem > 0)
	{
	  LA_PRINT_STRING (stream, tempstr, nargs - 1, 1, 0);
	  (*pos) = pc;
	}
      else
	{
	  fputs_filtered (" {", stream);
	  for (tem = 0; tem < nargs; tem++)
	    {
	      if (tem != 0)
		{
		  fputs_filtered (", ", stream);
		}
	      print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
	    }
	  fputs_filtered ("}", stream);
	}
      return;

    case OP_LABELED:
      tem = longest_to_int (exp->elts[pc + 1].longconst);
      (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
      /* Gcc support both these syntaxes.  Unsure which is preferred.  */
#if 1
      fputs_filtered (&exp->elts[pc + 2].string, stream);
      fputs_filtered (": ", stream);
#else
      fputs_filtered (".", stream);
      fputs_filtered (&exp->elts[pc + 2].string, stream);
      fputs_filtered ("=", stream);
#endif
      print_subexp (exp, pos, stream, PREC_SUFFIX);
      return;

    case TERNOP_COND:
      if ((int) prec > (int) PREC_COMMA)
	fputs_filtered ("(", stream);
      /* Print the subexpressions, forcing parentheses
         around any binary operations within them.
         This is more parentheses than are strictly necessary,
         but it looks clearer.  */
      print_subexp (exp, pos, stream, PREC_HYPER);
      fputs_filtered (" ? ", stream);
      print_subexp (exp, pos, stream, PREC_HYPER);
      fputs_filtered (" : ", stream);
      print_subexp (exp, pos, stream, PREC_HYPER);
      if ((int) prec > (int) PREC_COMMA)
	fputs_filtered (")", stream);
      return;

    case TERNOP_SLICE:
    case TERNOP_SLICE_COUNT:
      print_subexp (exp, pos, stream, PREC_SUFFIX);
      fputs_filtered ("(", stream);
      print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
      fputs_filtered (opcode == TERNOP_SLICE ? " : " : " UP ", stream);
      print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
      fputs_filtered (")", stream);
      return;

    case STRUCTOP_STRUCT:
      tem = longest_to_int (exp->elts[pc + 1].longconst);
      (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
      print_subexp (exp, pos, stream, PREC_SUFFIX);
      fputs_filtered (".", stream);
      fputs_filtered (&exp->elts[pc + 2].string, stream);
      return;

      /* Will not occur for Modula-2 */
    case STRUCTOP_PTR:
      tem = longest_to_int (exp->elts[pc + 1].longconst);
      (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
      print_subexp (exp, pos, stream, PREC_SUFFIX);
      fputs_filtered ("->", stream);
      fputs_filtered (&exp->elts[pc + 2].string, stream);
      return;

    case BINOP_SUBSCRIPT:
      print_subexp (exp, pos, stream, PREC_SUFFIX);
      fputs_filtered ("[", stream);
      print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
      fputs_filtered ("]", stream);
      return;

    case UNOP_POSTINCREMENT:
      print_subexp (exp, pos, stream, PREC_SUFFIX);
      fputs_filtered ("++", stream);
      return;

    case UNOP_POSTDECREMENT:
      print_subexp (exp, pos, stream, PREC_SUFFIX);
      fputs_filtered ("--", stream);
      return;

    case UNOP_CAST:
      (*pos) += 2;
      if ((int) prec > (int) PREC_PREFIX)
	fputs_filtered ("(", stream);
      fputs_filtered ("(", stream);
      type_print (exp->elts[pc + 1].type, "", stream, 0);
      fputs_filtered (") ", stream);
      print_subexp (exp, pos, stream, PREC_PREFIX);
      if ((int) prec > (int) PREC_PREFIX)
	fputs_filtered (")", stream);
      return;

    case UNOP_MEMVAL:
      (*pos) += 2;
      if ((int) prec > (int) PREC_PREFIX)
	fputs_filtered ("(", stream);
      if (TYPE_CODE (exp->elts[pc + 1].type) == TYPE_CODE_FUNC &&
	  exp->elts[pc + 3].opcode == OP_LONG)
	{
	  /* We have a minimal symbol fn, probably.  It's encoded
	     as a UNOP_MEMVAL (function-type) of an OP_LONG (int, address).
	     Swallow the OP_LONG (including both its opcodes); ignore
	     its type; print the value in the type of the MEMVAL.  */
	  (*pos) += 4;
	  val = value_at_lazy (exp->elts[pc + 1].type,
			       (CORE_ADDR) exp->elts[pc + 5].longconst);
	  value_print (val, stream, 0, Val_no_prettyprint);
	}
      else
	{
	  fputs_filtered ("{", stream);
	  type_print (exp->elts[pc + 1].type, "", stream, 0);
	  fputs_filtered ("} ", stream);
	  print_subexp (exp, pos, stream, PREC_PREFIX);
	}
      if ((int) prec > (int) PREC_PREFIX)
	fputs_filtered (")", stream);
      return;

    case BINOP_ASSIGN_MODIFY:
      opcode = exp->elts[pc + 1].opcode;
      (*pos) += 2;
      myprec = PREC_ASSIGN;
      assoc = 1;
      assign_modify = 1;
      op_str = "???";
      for (tem = 0; op_print_tab[tem].opcode != OP_NULL; tem++)
	if (op_print_tab[tem].opcode == opcode)
	  {
	    op_str = op_print_tab[tem].string;
	    break;
	  }
      if (op_print_tab[tem].opcode != opcode)
	/* Not found; don't try to keep going because we don't know how
	   to interpret further elements.  */
	error (_("Invalid expression"));
      break;

      /* C++ ops */

    case OP_THIS:
      ++(*pos);
      fputs_filtered ("this", stream);
      return;

      /* Objective-C ops */

    case OP_OBJC_SELF:
      ++(*pos);
      fputs_filtered ("self", stream);	/* The ObjC equivalent of "this".  */
      return;

      /* Modula-2 ops */

    case MULTI_SUBSCRIPT:
      (*pos) += 2;
      nargs = longest_to_int (exp->elts[pc + 1].longconst);
      print_subexp (exp, pos, stream, PREC_SUFFIX);
      fprintf_unfiltered (stream, " [");
      for (tem = 0; tem < nargs; tem++)
	{
	  if (tem != 0)
	    fprintf_unfiltered (stream, ", ");
	  print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
	}
      fprintf_unfiltered (stream, "]");
      return;

    case BINOP_VAL:
      (*pos) += 2;
      fprintf_unfiltered (stream, "VAL(");
      type_print (exp->elts[pc + 1].type, "", stream, 0);
      fprintf_unfiltered (stream, ",");
      print_subexp (exp, pos, stream, PREC_PREFIX);
      fprintf_unfiltered (stream, ")");
      return;

    case BINOP_INCL:
    case BINOP_EXCL:
      error (_("print_subexp:  Not implemented."));

      /* Default ops */

    default:
      op_str = "???";
      for (tem = 0; op_print_tab[tem].opcode != OP_NULL; tem++)
	if (op_print_tab[tem].opcode == opcode)
	  {
	    op_str = op_print_tab[tem].string;
	    myprec = op_print_tab[tem].precedence;
	    assoc = op_print_tab[tem].right_assoc;
	    break;
	  }
      if (op_print_tab[tem].opcode != opcode)
	/* Not found; don't try to keep going because we don't know how
	   to interpret further elements.  For example, this happens
	   if opcode is OP_TYPE.  */
	error (_("Invalid expression"));
    }

  /* Note that PREC_BUILTIN will always emit parentheses. */
  if ((int) myprec < (int) prec)
    fputs_filtered ("(", stream);
  if ((int) opcode > (int) BINOP_END)
    {
      if (assoc)
	{
	  /* Unary postfix operator.  */
	  print_subexp (exp, pos, stream, PREC_SUFFIX);
	  fputs_filtered (op_str, stream);
	}
      else
	{
	  /* Unary prefix operator.  */
	  fputs_filtered (op_str, stream);
	  if (myprec == PREC_BUILTIN_FUNCTION)
	    fputs_filtered ("(", stream);
	  print_subexp (exp, pos, stream, PREC_PREFIX);
	  if (myprec == PREC_BUILTIN_FUNCTION)
	    fputs_filtered (")", stream);
	}
    }
  else
    {
      /* Binary operator.  */
      /* Print left operand.
         If operator is right-associative,
         increment precedence for this operand.  */
      print_subexp (exp, pos, stream,
		    (enum precedence) ((int) myprec + assoc));
      /* Print the operator itself.  */
      if (assign_modify)
	fprintf_filtered (stream, " %s= ", op_str);
      else if (op_str[0] == ',')
	fprintf_filtered (stream, "%s ", op_str);
      else
	fprintf_filtered (stream, " %s ", op_str);
      /* Print right operand.
         If operator is left-associative,
         increment precedence for this operand.  */
      print_subexp (exp, pos, stream,
		    (enum precedence) ((int) myprec + !assoc));
    }

  if ((int) myprec < (int) prec)
    fputs_filtered (")", stream);
}
Ejemplo n.º 2
0
static enum string_repr_result
ppscm_print_string_repr (SCM printer, enum display_hint hint,
			 struct ui_file *stream, int recurse,
			 const struct value_print_options *options,
			 struct gdbarch *gdbarch,
			 const struct language_defn *language)
{
  struct value *replacement = NULL;
  SCM str_scm;
  enum string_repr_result result = STRING_REPR_ERROR;

  str_scm = ppscm_pretty_print_one_value (printer, &replacement,
					  gdbarch, language);
  if (gdbscm_is_false (str_scm))
    {
      result = STRING_REPR_NONE;
    }
  else if (scm_is_eq (str_scm, SCM_BOOL_T))
    {
      struct value_print_options opts = *options;

      gdb_assert (replacement != NULL);
      opts.addressprint = 0;
      common_val_print (replacement, stream, recurse, &opts, language);
      result = STRING_REPR_OK;
    }
  else if (scm_is_string (str_scm))
    {
      struct cleanup *cleanup;
      size_t length;
      char *string
	= gdbscm_scm_to_string (str_scm, &length,
				target_charset (gdbarch), 0 /*!strict*/, NULL);

      cleanup = make_cleanup (xfree, string);
      if (hint == HINT_STRING)
	{
	  struct type *type = builtin_type (gdbarch)->builtin_char;
	  
	  LA_PRINT_STRING (stream, type, (gdb_byte *) string,
			   length, NULL, 0, options);
	}
      else
	{
	  /* Alas scm_to_stringn doesn't nul-terminate the string if we
	     ask for the length.  */
	  size_t i;

	  for (i = 0; i < length; ++i)
	    {
	      if (string[i] == '\0')
		fputs_filtered ("\\000", stream);
	      else
		fputc_filtered (string[i], stream);
	    }
	}
      result = STRING_REPR_OK;
      do_cleanups (cleanup);
    }
  else if (lsscm_is_lazy_string (str_scm))
    {
      struct value_print_options local_opts = *options;

      local_opts.addressprint = 0;
      lsscm_val_print_lazy_string (str_scm, stream, &local_opts);
      result = STRING_REPR_OK;
    }
  else
    {
      gdb_assert (gdbscm_is_exception (str_scm));
      ppscm_print_exception_unless_memory_error (str_scm, stream);
      result = STRING_REPR_ERROR;
    }

  return result;
}
Ejemplo n.º 3
0
int
f_val_print (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)
{
  unsigned int i = 0;	/* Number of characters printed */
  struct type *elttype;
  LONGEST val;
  CORE_ADDR addr;

  CHECK_TYPEDEF (type);
  switch (TYPE_CODE (type))
    {
    case TYPE_CODE_STRING:
      f77_get_dynamic_length_of_aggregate (type);
      LA_PRINT_STRING (stream, valaddr, TYPE_LENGTH (type), 1, 0);
      break;

    case TYPE_CODE_ARRAY:
      fprintf_filtered (stream, "(");
      f77_print_array (type, valaddr, address, stream, format,
		       deref_ref, recurse, pretty);
      fprintf_filtered (stream, ")");
      break;

    case TYPE_CODE_PTR:
      if (format && format != 's')
	{
	  print_scalar_formatted (valaddr, type, format, 0, stream);
	  break;
	}
      else
	{
	  addr = unpack_pointer (type, valaddr);
	  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)
	    i = val_print_string (addr, -1, TYPE_LENGTH (elttype), 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_REF:
      elttype = check_typedef (TYPE_TARGET_TYPE (type));
      if (addressprint)
	{
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + embedded_offset, type);
	  fprintf_filtered (stream, "@");
	  print_address_numeric (addr, 1, stream);
	  if (deref_ref)
	    fputs_filtered (": ", stream);
	}
      /* De-reference the reference.  */
      if (deref_ref)
	{
	  if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
	    {
	      struct value *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,
			 pretty);
	    }
	  else
	    fputs_filtered ("???", stream);
	}
      break;

    case TYPE_CODE_FUNC:
      if (format)
	{
	  print_scalar_formatted (valaddr, 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_INT:
      format = format ? format : output_format;
      if (format)
	print_scalar_formatted (valaddr, type, format, 0, stream);
      else
	{
	  val_print_type_code_int (type, valaddr, stream);
	  /* C and C++ has no single byte int type, char is used instead.
	     Since we don't know whether the value is really intended to
	     be used as an integer or a character, print the character
	     equivalent as well. */
	  if (TYPE_LENGTH (type) == 1)
	    {
	      fputs_filtered (" ", stream);
	      LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr),
			     stream);
	    }
	}
      break;

    case TYPE_CODE_FLT:
      if (format)
	print_scalar_formatted (valaddr, type, format, 0, stream);
      else
	print_floating (valaddr, type, stream);
      break;

    case TYPE_CODE_VOID:
      fprintf_filtered (stream, "VOID");
      break;

    case TYPE_CODE_ERROR:
      fprintf_filtered (stream, "<error type>");
      break;

    case TYPE_CODE_RANGE:
      /* FIXME, we should not ever have to print one of these yet.  */
      fprintf_filtered (stream, "<range type>");
      break;

    case TYPE_CODE_BOOL:
      format = format ? format : output_format;
      if (format)
	print_scalar_formatted (valaddr, type, format, 0, stream);
      else
	{
	  val = 0;
	  switch (TYPE_LENGTH (type))
	    {
	    case 1:
	      val = unpack_long (builtin_type_f_logical_s1, valaddr);
	      break;

	    case 2:
	      val = unpack_long (builtin_type_f_logical_s2, valaddr);
	      break;

	    case 4:
	      val = unpack_long (builtin_type_f_logical, valaddr);
	      break;

	    default:
	      error ("Logicals of length %d bytes not supported",
		     TYPE_LENGTH (type));

	    }

	  if (val == 0)
	    fprintf_filtered (stream, ".FALSE.");
	  else if (val == 1)
	    fprintf_filtered (stream, ".TRUE.");
	  else
	    /* Not a legitimate logical type, print as an integer.  */
	    {
	      /* Bash the type code temporarily.  */
	      TYPE_CODE (type) = TYPE_CODE_INT;
	      f_val_print (type, valaddr, 0, address, stream, format,
			   deref_ref, recurse, pretty);
	      /* Restore the type code so later uses work as intended. */
	      TYPE_CODE (type) = TYPE_CODE_BOOL;
	    }
	}
      break;

    case TYPE_CODE_COMPLEX:
      switch (TYPE_LENGTH (type))
	{
	case 8:
	  type = builtin_type_f_real;
	  break;
	case 16:
	  type = builtin_type_f_real_s8;
	  break;
	case 32:
	  type = builtin_type_f_real_s16;
	  break;
	default:
	  error ("Cannot print out complex*%d variables", TYPE_LENGTH (type));
	}
      fputs_filtered ("(", stream);
      print_floating (valaddr, type, stream);
      fputs_filtered (",", stream);
      print_floating (valaddr + TYPE_LENGTH (type), type, stream);
      fputs_filtered (")", stream);
      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 F77 type code %d in symbol table.", TYPE_CODE (type));
    }
  gdb_flush (stream);
  return 0;
}
Ejemplo n.º 4
0
int
c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
	     CORE_ADDR address, struct ui_file *stream, int format,
	     int deref_ref, int recurse, enum val_prettyprint pretty)
{
  unsigned int i = 0;	/* Number of characters printed */
  unsigned len;
  struct type *elttype;
  unsigned eltlen;
  LONGEST val;
  CORE_ADDR addr;
  int vector_int8s = 0;
  int vector_floats = 0;

  CHECK_TYPEDEF (type);
  switch (TYPE_CODE (type))
    {
    case TYPE_CODE_ARRAY:
      elttype = check_typedef (TYPE_TARGET_TYPE (type));
      if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
	{
	  eltlen = TYPE_LENGTH (elttype);
	  len = TYPE_LENGTH (type) / eltlen;
	  if (prettyprint_arrays)
	    {
	      print_spaces_filtered (2 + 2 * recurse, stream);
	    }

          /* APPLE LOCAL: gdb will print the int8_t elements of a vector
             register as a string or as characters -- neither of which is
             what the user expects 99% of the time.  Instead, detect that
             we're looking at a vector's int8_t array and treat it
             specially.  */
          if (eltlen == 1 
              && TYPE_VECTOR (type) 
              && TYPE_CODE (elttype) == TYPE_CODE_INT
              && format == 0)
            {
              vector_int8s = 1;
            }

          /* APPLE LOCAL: Detect if we're about to print an array of
             v4_float or v2_doubles in a vector register  */
          if ((eltlen == 4 || eltlen == 8)
              && TYPE_VECTOR (type) 
              && TYPE_CODE (elttype) == TYPE_CODE_FLT)
            {
              vector_floats = 1;
            }

          /* 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')
              && vector_int8s == 0)
	    {
	      /* 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, eltlen, 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 (cp_is_vtbl_ptr_type (elttype))
		{
		  i = 1;
		  fprintf_filtered (stream, _("%d vtable entries"), len - 1);
		}
	      else
		{
		  i = 0;
		}
              
              /* If this is an array of int8_t's in a vector register,
                 force it to print as decimal by default, not as
                 decimal value + octal escaped char.  */
              if (format == 0 && vector_int8s)
                format = 'd';

              /* If this is an array of v4_float or v2_doubles in a vector
                 register, force it to print with the '%a' floating point hex
                 formatter when "p/x" is used.  Default formatter remains the
                 '%g' style.  */
              if (format == 'x' && vector_floats)
                format = 'A';

	      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 && cp_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.) */
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + embedded_offset, type);
	  print_function_pointer_address (addr, stream);
	  break;
	}
      elttype = check_typedef (TYPE_TARGET_TYPE (type));
      if (TYPE_CODE (elttype) == TYPE_CODE_METHOD)
	{
	  cp_print_class_method (valaddr + embedded_offset, type, stream);
	}
      else if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER)
	{
	  cp_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:

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

	  if (addressprint && format != 's')
	    {
	      deprecated_print_address_numeric (addr, 1, stream);
	    }

	  /* For a pointer to char or unsigned char, also print the string
	     pointed to, unless pointer is null.  */
	  /* FIXME: need to handle wchar_t here... */

	  if (TYPE_LENGTH (elttype) == 1
	      && TYPE_CODE (elttype) == TYPE_CODE_INT
	      && (format == 0 || format == 's')
	      && addr != 0)
	    {
	      i = val_print_string (addr, -1, TYPE_LENGTH (elttype), stream);
	    }
	  else if (cp_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_PRINT_NAME (msymbol), stream);
		  fputs_filtered (">", stream);
		}
	      if (vt_address && vtblprint)
		{
		  struct value *vt_val;
		  struct symbol *wsym = (struct symbol *) NULL;
		  struct type *wtype;
		  struct block *block = (struct block *) NULL;
		  int is_this_fld;

		  if (msymbol != NULL)
		    wsym = lookup_symbol (DEPRECATED_SYMBOL_NAME (msymbol), block,
					  VAR_DOMAIN, &is_this_fld, NULL);

		  if (wsym)
		    {
		      wtype = SYMBOL_TYPE (wsym);
		    }
		  else
		    {
		      wtype = TYPE_TARGET_TYPE (type);
		    }
		  vt_val = value_at (wtype, vt_address);
		  common_val_print (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 c_val_print"));
      break;

    case TYPE_CODE_REF:
      elttype = check_typedef (TYPE_TARGET_TYPE (type));
      if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER)
	{
	  cp_print_class_member (valaddr + embedded_offset,
				 TYPE_DOMAIN_TYPE (elttype),
				 stream, "");
	  break;
	}
      if (addressprint)
	{
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + embedded_offset, type);
	  fprintf_filtered (stream, "@");
	  deprecated_print_address_numeric (addr, 1, stream);
	  if (deref_ref)
	    fputs_filtered (": ", stream);
	}
      /* De-reference the reference.  */
      if (deref_ref)
	{
	  if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
	    {
	      struct value *deref_val =
	      value_at
	      (TYPE_TARGET_TYPE (type),
	       unpack_pointer (lookup_pointer_type (builtin_type_void),
			       valaddr + embedded_offset));
	      common_val_print (deref_val, stream, format, deref_ref,
				recurse, pretty);
	    }
	  else
	    fputs_filtered ("???", stream);
	}
      break;

    case TYPE_CODE_UNION:
      if (recurse && !unionprint)
	{
	  fprintf_filtered (stream, "{...}");
	  break;
	}
      /* Fall through.  */
    case TYPE_CODE_STRUCT:
      /*FIXME: Abstract this away */
      if (vtblprint && cp_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.) */
	  int offset = (embedded_offset +
			TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8);
	  struct type *field_type = TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET);
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + offset, field_type);

	  print_function_pointer_address (addr, stream);
	}
      else
	cp_print_value_fields (type, 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
	    print_longest (stream, 'd', 0, 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);
	  /* C and C++ has no single byte int type, char is used instead.
	     Since we don't know whether the value is really intended to
	     be used as an integer or a character, print the character
	     equivalent as well. */
	  if (TYPE_LENGTH (type) == 1)
	    {
	      fputs_filtered (" ", stream);
	      LA_PRINT_CHAR ((unsigned char) unpack_long (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_METHOD:
      {
	struct value *v = value_at (type, address);
	cp_print_class_method (value_contents (value_addr (v)),
			       lookup_pointer_type (type), stream);
	break;
      }

    case TYPE_CODE_VOID:
      fprintf_filtered (stream, "void");
      break;

    case TYPE_CODE_ERROR:
      /* APPLE LOCAL display error as unknown type */
      fprintf_filtered (stream, _("<unknown 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;

    case TYPE_CODE_COMPLEX:
      if (format)
	print_scalar_formatted (valaddr + embedded_offset,
				TYPE_TARGET_TYPE (type),
				format, 0, stream);
      else
	print_floating (valaddr + embedded_offset, TYPE_TARGET_TYPE (type),
			stream);
      fprintf_filtered (stream, " + ");
      if (format)
	print_scalar_formatted (valaddr + embedded_offset
				+ TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
				TYPE_TARGET_TYPE (type),
				format, 0, stream);
      else
	print_floating (valaddr + embedded_offset
			+ TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
			TYPE_TARGET_TYPE (type),
			stream);
      fprintf_filtered (stream, " * I");
      break;

    default:
      error (_("Invalid C/C++ type code %d in symbol table."), TYPE_CODE (type));
    }
  gdb_flush (stream);
  return (0);
}
Ejemplo n.º 5
0
void
pascal_val_print (struct type *type, const gdb_byte *valaddr,
		  int embedded_offset, CORE_ADDR address,
		  struct ui_file *stream, int recurse,
		  const struct value *original_value,
		  const struct value_print_options *options)
{
  struct gdbarch *gdbarch = get_type_arch (type);
  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
  unsigned int i = 0;	/* Number of characters printed */
  unsigned len;
  LONGEST low_bound, high_bound;
  struct type *elttype;
  unsigned eltlen;
  int length_pos, length_size, string_pos;
  struct type *char_type;
  CORE_ADDR addr;
  int want_space = 0;

  type = check_typedef (type);
  switch (TYPE_CODE (type))
    {
    case TYPE_CODE_ARRAY:
      if (get_array_bounds (type, &low_bound, &high_bound))
	{
	  len = high_bound - low_bound + 1;
	  elttype = check_typedef (TYPE_TARGET_TYPE (type));
	  eltlen = TYPE_LENGTH (elttype);
	  if (options->prettyformat_arrays)
	    {
	      print_spaces_filtered (2 + 2 * recurse, stream);
	    }
	  /* If 's' format is used, try to print out as string.
	     If no format is given, print as string if element type
	     is of TYPE_CODE_CHAR and element size is 1,2 or 4.  */
	  if (options->format == 's'
	      || ((eltlen == 1 || eltlen == 2 || eltlen == 4)
		  && TYPE_CODE (elttype) == TYPE_CODE_CHAR
		  && options->format == 0))
	    {
	      /* 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;
		       extract_unsigned_integer (valaddr + embedded_offset +
						 temp_len * eltlen, eltlen,
						 byte_order)
		       && temp_len < len && temp_len < options->print_max;
		       temp_len++);
		  len = temp_len;
		}

	      LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type),
			       valaddr + embedded_offset, len, NULL, 0,
			       options);
	      i = len;
	    }
	  else
	    {
	      fprintf_filtered (stream, "{");
	      /* 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, recurse,
					original_value, options, i);
	      fprintf_filtered (stream, "}");
	    }
	  break;
	}
      /* Array of unspecified length: treat like pointer to first elt.  */
      addr = address + embedded_offset;
      goto print_unpacked_pointer;

    case TYPE_CODE_PTR:
      if (options->format && options->format != 's')
	{
	  val_print_scalar_formatted (type, valaddr, embedded_offset,
				      original_value, options, 0, stream);
	  break;
	}
      if (options->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.)  */
	  /* Extract the address, assume that it is unsigned.  */
	  addr = extract_unsigned_integer (valaddr + embedded_offset,
					   TYPE_LENGTH (type), byte_order);
	  print_address_demangle (options, gdbarch, addr, stream, demangle);
	  break;
	}
      check_typedef (TYPE_TARGET_TYPE (type));

      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 (options, gdbarch, addr, stream, demangle);
	  return;
	}

      if (options->addressprint && options->format != 's')
	{
	  fputs_filtered (paddress (gdbarch, addr), 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
	      || TYPE_CODE (elttype) == TYPE_CODE_CHAR))
	  || ((TYPE_LENGTH (elttype) == 2 || TYPE_LENGTH (elttype) == 4)
	      && TYPE_CODE (elttype) == TYPE_CODE_CHAR))
	  && (options->format == 0 || options->format == 's')
	  && addr != 0)
	{
	  if (want_space)
	    fputs_filtered (" ", stream);
	  /* No wide string yet.  */
	  i = val_print_string (elttype, NULL, addr, -1, stream, options);
	}
      /* 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.  */
      if (is_pascal_string_type (elttype, &length_pos, &length_size,
				 &string_pos, &char_type, NULL)
	  && addr != 0)
	{
	  ULONGEST string_length;
	  gdb_byte *buffer;

	  if (want_space)
	    fputs_filtered (" ", stream);
	  buffer = (gdb_byte *) xmalloc (length_size);
	  read_memory (addr + length_pos, buffer, length_size);
	  string_length = extract_unsigned_integer (buffer, length_size,
						    byte_order);
	  xfree (buffer);
	  i = val_print_string (char_type, NULL,
				addr + string_pos, string_length,
				stream, options);
	}
      else if (pascal_object_is_vtbl_member (type))
	{
	  /* Print vtbl's nicely.  */
	  CORE_ADDR vt_address = unpack_pointer (type,
						 valaddr + embedded_offset);
	  struct bound_minimal_symbol msymbol =
	    lookup_minimal_symbol_by_pc (vt_address);

	  /* If 'symbol_print' is set, we did the work above.  */
	  if (!options->symbol_print
	      && (msymbol.minsym != NULL)
	      && (vt_address == BMSYMBOL_VALUE_ADDRESS (msymbol)))
	    {
	      if (want_space)
		fputs_filtered (" ", stream);
	      fputs_filtered ("<", stream);
	      fputs_filtered (MSYMBOL_PRINT_NAME (msymbol.minsym), stream);
	      fputs_filtered (">", stream);
	      want_space = 1;
	    }
	  if (vt_address && options->vtblprint)
	    {
	      struct value *vt_val;
	      struct symbol *wsym = NULL;
	      struct type *wtype;
	      struct block *block = NULL;
	      struct field_of_this_result is_this_fld;

	      if (want_space)
		fputs_filtered (" ", stream);

	      if (msymbol.minsym != NULL)
		wsym = lookup_symbol (MSYMBOL_LINKAGE_NAME (msymbol.minsym),
				      block,
				      VAR_DOMAIN, &is_this_fld).symbol;

	      if (wsym)
		{
		  wtype = SYMBOL_TYPE (wsym);
		}
	      else
		{
		  wtype = TYPE_TARGET_TYPE (type);
		}
	      vt_val = value_at (wtype, vt_address);
	      common_val_print (vt_val, stream, recurse + 1, options,
				current_language);
	      if (options->prettyformat)
		{
		  fprintf_filtered (stream, "\n");
		  print_spaces_filtered (2 + 2 * recurse, stream);
		}
	    }
	}

      return;

    case TYPE_CODE_REF:
    case TYPE_CODE_ENUM:
    case TYPE_CODE_FLAGS:
    case TYPE_CODE_FUNC:
    case TYPE_CODE_RANGE:
    case TYPE_CODE_INT:
    case TYPE_CODE_FLT:
    case TYPE_CODE_VOID:
    case TYPE_CODE_ERROR:
    case TYPE_CODE_UNDEF:
    case TYPE_CODE_BOOL:
    case TYPE_CODE_CHAR:
      generic_val_print (type, valaddr, embedded_offset, address,
			 stream, recurse, original_value, options,
			 &p_decorations);
      break;

    case TYPE_CODE_UNION:
      if (recurse && !options->unionprint)
	{
	  fprintf_filtered (stream, "{...}");
	  break;
	}
      /* Fall through.  */
    case TYPE_CODE_STRUCT:
      if (options->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.)  */
	  /* Extract the address, assume that it is unsigned.  */
	  print_address_demangle
	    (options, gdbarch,
	     extract_unsigned_integer (valaddr + embedded_offset
				       + TYPE_FIELD_BITPOS (type,
							    VTBL_FNADDR_OFFSET) / 8,
				       TYPE_LENGTH (TYPE_FIELD_TYPE (type,
								     VTBL_FNADDR_OFFSET)),
				       byte_order),
	     stream, demangle);
	}
      else
	{
          if (is_pascal_string_type (type, &length_pos, &length_size,
                                     &string_pos, &char_type, NULL))
	    {
	      len = extract_unsigned_integer (valaddr + embedded_offset
					      + length_pos, length_size,
					      byte_order);
	      LA_PRINT_STRING (stream, char_type,
			       valaddr + embedded_offset + string_pos,
			       len, NULL, 0, options);
	    }
	  else
	    pascal_object_print_value_fields (type, valaddr, embedded_offset,
					      address, stream, recurse,
					      original_value, options,
					      NULL, 0);
	}
      break;

    case TYPE_CODE_SET:
      elttype = TYPE_INDEX_TYPE (type);
      elttype = check_typedef (elttype);
      if (TYPE_STUB (elttype))
	{
	  fprintf_filtered (stream, "<incomplete type>");
	  gdb_flush (stream);
	  break;
	}
      else
	{
	  struct type *range = elttype;
	  LONGEST low_bound, high_bound;
	  int i;
	  int need_comma = 0;

	  fputs_filtered ("[", stream);

	  i = get_discrete_bounds (range, &low_bound, &high_bound);
	  if (low_bound == 0 && high_bound == -1 && TYPE_LENGTH (type) > 0)
	    {
	      /* If we know the size of the set type, we can figure out the
	      maximum value.  */
	      i = 0;
	      high_bound = TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1;
	      TYPE_HIGH_BOUND (range) = high_bound;
	    }
	maybe_bad_bstring:
	  if (i < 0)
	    {
	      fputs_filtered ("<error value>", stream);
	      goto done;
	    }

	  for (i = low_bound; i <= high_bound; i++)
	    {
	      int element = value_bit_index (type,
					     valaddr + embedded_offset, i);

	      if (element < 0)
		{
		  i = element;
		  goto maybe_bad_bstring;
		}
	      if (element)
		{
		  if (need_comma)
		    fputs_filtered (", ", stream);
		  print_type_scalar (range, i, stream);
		  need_comma = 1;

		  if (i + 1 <= high_bound
		      && value_bit_index (type,
					  valaddr + embedded_offset, ++i))
		    {
		      int j = i;

		      fputs_filtered ("..", stream);
		      while (i + 1 <= high_bound
			     && value_bit_index (type,
						 valaddr + embedded_offset,
						 ++i))
			j = i;
		      print_type_scalar (range, j, stream);
		    }
		}
	    }
	done:
	  fputs_filtered ("]", stream);
	}
      break;

    default:
      error (_("Invalid pascal type code %d in symbol table."),
	     TYPE_CODE (type));
    }
  gdb_flush (stream);
}
Ejemplo n.º 6
0
void
c_val_print (struct type *type, const gdb_byte *valaddr,
	     int embedded_offset, CORE_ADDR address,
	     struct ui_file *stream, int recurse,
	     const struct value *original_value,
	     const struct value_print_options *options)
{
  struct gdbarch *gdbarch = get_type_arch (type);
  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
  unsigned int i = 0;	/* Number of characters printed.  */
  unsigned len;
  struct type *elttype, *unresolved_elttype;
  struct type *unresolved_type = type;
  unsigned eltlen;
  CORE_ADDR addr;

  CHECK_TYPEDEF (type);
  switch (TYPE_CODE (type))
    {
    case TYPE_CODE_ARRAY:
      unresolved_elttype = TYPE_TARGET_TYPE (type);
      elttype = check_typedef (unresolved_elttype);
      if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (unresolved_elttype) > 0)
	{
          LONGEST low_bound, high_bound;

          if (!get_array_bounds (type, &low_bound, &high_bound))
            error (_("Could not determine the array high bound"));

	  eltlen = TYPE_LENGTH (elttype);
	  len = high_bound - low_bound + 1;
	  if (options->prettyformat_arrays)
	    {
	      print_spaces_filtered (2 + 2 * recurse, stream);
	    }

	  /* Print arrays of textual chars with a string syntax, as
	     long as the entire array is valid.  */
          if (c_textual_element_type (unresolved_elttype,
				      options->format)
	      && value_bytes_available (original_value, embedded_offset,
					TYPE_LENGTH (type))
	      && value_bits_valid (original_value,
				   TARGET_CHAR_BIT * embedded_offset,
				   TARGET_CHAR_BIT * TYPE_LENGTH (type)))
	    {
	      int force_ellipses = 0;

	      /* 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;

		  for (temp_len = 0;
		       (temp_len < len
			&& temp_len < options->print_max
			&& extract_unsigned_integer (valaddr + embedded_offset
						     + temp_len * eltlen,
						     eltlen, byte_order) != 0);
		       ++temp_len)
		    ;

		  /* Force LA_PRINT_STRING to print ellipses if
		     we've printed the maximum characters and
		     the next character is not \000.  */
		  if (temp_len == options->print_max && temp_len < len)
		    {
		      ULONGEST val
			= extract_unsigned_integer (valaddr + embedded_offset
						    + temp_len * eltlen,
						    eltlen, byte_order);
		      if (val != 0)
			force_ellipses = 1;
		    }

		  len = temp_len;
		}

	      LA_PRINT_STRING (stream, unresolved_elttype,
			       valaddr + embedded_offset, len,
			       NULL, force_ellipses, options);
	      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 (cp_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,
					recurse, original_value, options, i);
	      fprintf_filtered (stream, "}");
	    }
	  break;
	}
      /* Array of unspecified length: treat like pointer to first
	 elt.  */
      addr = address + embedded_offset;
      goto print_unpacked_pointer;

    case TYPE_CODE_METHODPTR:
      cplus_print_method_ptr (valaddr + embedded_offset, type, stream);
      break;

    case TYPE_CODE_PTR:
      if (options->format && options->format != 's')
	{
	  val_print_scalar_formatted (type, valaddr, embedded_offset,
				      original_value, options, 0, stream);
	  break;
	}
      if (options->vtblprint && cp_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.)  */
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + embedded_offset, type);

	  print_function_pointer_address (options, gdbarch, addr, stream);
	  break;
	}
      unresolved_elttype = TYPE_TARGET_TYPE (type);
      elttype = check_typedef (unresolved_elttype);
	{
	  int want_space;

	  addr = unpack_pointer (type, valaddr + embedded_offset);
	print_unpacked_pointer:

	  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;
	    }

	  if (options->symbol_print)
	    want_space = print_address_demangle (options, gdbarch, addr,
						 stream, demangle);
	  else if (options->addressprint)
	    {
	      fputs_filtered (paddress (gdbarch, addr), stream);
	      want_space = 1;
	    }

	  /* For a pointer to a textual type, also print the string
	     pointed to, unless pointer is null.  */

	  if (c_textual_element_type (unresolved_elttype,
				      options->format)
	      && addr != 0)
	    {
	      if (want_space)
		fputs_filtered (" ", stream);
	      i = val_print_string (unresolved_elttype, NULL,
				    addr, -1,
				    stream, options);
	    }
	  else if (cp_is_vtbl_member (type))
	    {
	      /* Print vtbl's nicely.  */
	      CORE_ADDR vt_address = unpack_pointer (type,
						     valaddr
						     + embedded_offset);
	      struct bound_minimal_symbol msymbol =
		lookup_minimal_symbol_by_pc (vt_address);

	      /* If 'symbol_print' is set, we did the work above.  */
	      if (!options->symbol_print
		  && (msymbol.minsym != NULL)
		  && (vt_address == SYMBOL_VALUE_ADDRESS (msymbol.minsym)))
		{
		  if (want_space)
		    fputs_filtered (" ", stream);
		  fputs_filtered (" <", stream);
		  fputs_filtered (SYMBOL_PRINT_NAME (msymbol.minsym), stream);
		  fputs_filtered (">", stream);
		  want_space = 1;
		}

	      if (vt_address && options->vtblprint)
		{
		  struct value *vt_val;
		  struct symbol *wsym = (struct symbol *) NULL;
		  struct type *wtype;
		  struct block *block = (struct block *) NULL;
		  struct field_of_this_result is_this_fld;

		  if (want_space)
		    fputs_filtered (" ", stream);

		  if (msymbol.minsym != NULL)
		    wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol.minsym),
					  block, VAR_DOMAIN,
					  &is_this_fld);

		  if (wsym)
		    {
		      wtype = SYMBOL_TYPE (wsym);
		    }
		  else
		    {
		      wtype = unresolved_elttype;
		    }
		  vt_val = value_at (wtype, vt_address);
		  common_val_print (vt_val, stream, recurse + 1,
				    options, current_language);
		  if (options->prettyformat)
		    {
		      fprintf_filtered (stream, "\n");
		      print_spaces_filtered (2 + 2 * recurse, stream);
		    }
		}
	    }
	  return;
	}
      break;

    case TYPE_CODE_UNION:
      if (recurse && !options->unionprint)
	{
	  fprintf_filtered (stream, "{...}");
	  break;
	}
      /* Fall through.  */
    case TYPE_CODE_STRUCT:
      /*FIXME: Abstract this away.  */
      if (options->vtblprint && cp_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.)  */
	  int offset = (embedded_offset
			+ TYPE_FIELD_BITPOS (type,
					     VTBL_FNADDR_OFFSET) / 8);
	  struct type *field_type = TYPE_FIELD_TYPE (type,
						     VTBL_FNADDR_OFFSET);
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + offset, field_type);

	  print_function_pointer_address (options, gdbarch, addr, stream);
	}
      else
	cp_print_value_fields_rtti (type, valaddr,
				    embedded_offset, address,
				    stream, recurse,
				    original_value, options,
				    NULL, 0);
      break;

    case TYPE_CODE_INT:
      if (options->format || options->output_format)
	{
	  struct value_print_options opts = *options;

	  opts.format = (options->format ? options->format
			 : options->output_format);
	  val_print_scalar_formatted (type, valaddr, embedded_offset,
				      original_value, &opts, 0, stream);
	}
      else
	{
	  val_print_type_code_int (type, valaddr + embedded_offset,
				   stream);
	  /* C and C++ has no single byte int type, char is used
	     instead.  Since we don't know whether the value is really
	     intended to be used as an integer or a character, print
	     the character equivalent as well.  */
	  if (c_textual_element_type (unresolved_type, options->format))
	    {
	      fputs_filtered (" ", stream);
	      LA_PRINT_CHAR (unpack_long (type, valaddr + embedded_offset),
			     unresolved_type, stream);
	    }
	}
      break;

    case TYPE_CODE_MEMBERPTR:
      if (!options->format)
	{
	  cp_print_class_member (valaddr + embedded_offset, type, stream, "&");
	  break;
	}
      /* FALLTHROUGH */

    case TYPE_CODE_REF:
    case TYPE_CODE_ENUM:
    case TYPE_CODE_FLAGS:
    case TYPE_CODE_FUNC:
    case TYPE_CODE_METHOD:
    case TYPE_CODE_BOOL:
    case TYPE_CODE_RANGE:
    case TYPE_CODE_FLT:
    case TYPE_CODE_DECFLOAT:
    case TYPE_CODE_VOID:
    case TYPE_CODE_ERROR:
    case TYPE_CODE_UNDEF:
    case TYPE_CODE_COMPLEX:
    case TYPE_CODE_CHAR:
    default:
      generic_val_print (type, valaddr, embedded_offset, address,
			 stream, recurse, original_value, options,
			 &c_decorations);
      break;
    }
  gdb_flush (stream);
}
Ejemplo n.º 7
0
int
m2_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
	      CORE_ADDR address, struct ui_file *stream, int format,
	      int deref_ref, int recurse, enum val_prettyprint pretty)
{
  unsigned int i = 0;	/* Number of characters printed */
  unsigned len;
  struct type *elttype;
  unsigned eltlen;
  int length_pos, length_size, string_pos;
  int char_size;
  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, "{");
	      val_print_array_elements (type, valaddr + embedded_offset,
					address, stream, format, deref_ref,
					recurse, pretty, 0);
	      fprintf_filtered (stream, "}");
	    }
	  break;
	}
      /* Array of unspecified length: treat like pointer to first elt.  */
      print_unpacked_pointer (type, address, address, format, stream);
      break;

    case TYPE_CODE_PTR:
      if (TYPE_CONST (type))
	print_variable_at_address (type, valaddr + embedded_offset,
				   stream, format, deref_ref, recurse,
				   pretty);
      else if (format && format != 's')
	print_scalar_formatted (valaddr + embedded_offset, type, format,
				0, stream);
      else
	{
	  addr = unpack_pointer (type, valaddr + embedded_offset);
	  print_unpacked_pointer (type, addr, address, format, stream);
	}
      break;

    case TYPE_CODE_MEMBER:
      error (_("not implemented: member type in m2_val_print"));
      break;

    case TYPE_CODE_REF:
      elttype = check_typedef (TYPE_TARGET_TYPE (type));
      if (addressprint)
	{
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + embedded_offset, type);
	  fprintf_filtered (stream, "@");
	  fputs_filtered (paddress (addr), stream);
	  if (deref_ref)
	    fputs_filtered (": ", stream);
	}
      /* De-reference the reference.  */
      if (deref_ref)
	{
	  if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
	    {
	      struct value *deref_val =
		value_at
		(TYPE_TARGET_TYPE (type),
		 unpack_pointer (lookup_pointer_type (builtin_type_void),
				 valaddr + embedded_offset));
	      common_val_print (deref_val, stream, format, deref_ref,
				recurse, pretty);
	    }
	  else
	    fputs_filtered ("???", stream);
	}
      break;

    case TYPE_CODE_UNION:
      if (recurse && !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, format, pretty);
      else
	cp_print_value_fields (type, 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
	    fprintf_filtered (stream, "%ld)", (long int) val);
	}
      break;

    case TYPE_CODE_RANGE:
      if (TYPE_LENGTH (type) == TYPE_LENGTH (TYPE_TARGET_TYPE (type)))
	{
	  m2_val_print (TYPE_TARGET_TYPE (type), valaddr, embedded_offset,
			address, stream, format, deref_ref, recurse, pretty);
	  break;
	}
      /* FIXME: create_range_type does not set the unsigned bit in a
         range type (I think it probably should copy it from the target
         type), so we won't print values which are too large to
         fit in a signed integer correctly.  */
      /* FIXME: Doesn't handle ranges of enums correctly.  (Can't just
         print with the target type, though, because the size of our type
         and the target type might differ).  */
      /* FALLTHROUGH */

    case TYPE_CODE_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_METHOD:
      break;

    case TYPE_CODE_BITSTRING:
    case TYPE_CODE_SET:
      elttype = TYPE_INDEX_TYPE (type);
      CHECK_TYPEDEF (elttype);
      if (TYPE_STUB (elttype))
	{
	  fprintf_filtered (stream, _("<incomplete type>"));
	  gdb_flush (stream);
	  break;
	}
      else
	{
	  struct type *range = elttype;
	  LONGEST low_bound, high_bound;
	  int i;
	  int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING;
	  int need_comma = 0;

	  if (is_bitstring)
	    fputs_filtered ("B'", stream);
	  else
	    fputs_filtered ("{", stream);

	  i = get_discrete_bounds (range, &low_bound, &high_bound);
	maybe_bad_bstring:
	  if (i < 0)
	    {
	      fputs_filtered (_("<error value>"), stream);
	      goto done;
	    }

	  for (i = low_bound; i <= high_bound; i++)
	    {
	      int element = value_bit_index (type, valaddr + embedded_offset,
					     i);
	      if (element < 0)
		{
		  i = element;
		  goto maybe_bad_bstring;
		}
	      if (is_bitstring)
		fprintf_filtered (stream, "%d", element);
	      else if (element)
		{
		  if (need_comma)
		    fputs_filtered (", ", stream);
		  print_type_scalar (range, i, stream);
		  need_comma = 1;

		  if (i + 1 <= high_bound
		      && value_bit_index (type, valaddr + embedded_offset,
					  ++i))
		    {
		      int j = i;
		      fputs_filtered ("..", stream);
		      while (i + 1 <= high_bound
			     && value_bit_index (type,
						 valaddr + embedded_offset,
						 ++i))
			j = i;
		      print_type_scalar (range, j, stream);
		    }
		}
	    }
	done:
	  if (is_bitstring)
	    fputs_filtered ("'", stream);
	  else
	    fputs_filtered ("}", stream);
	}
      break;

    case TYPE_CODE_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 m2 type code %d in symbol table."), TYPE_CODE (type));
    }
  gdb_flush (stream);
  return (0);
}
int
pascal_val_print (struct type *type, const gdb_byte *valaddr,
		  int embedded_offset, CORE_ADDR address,
		  struct ui_file *stream, int format, int deref_ref,
		  int recurse, enum val_prettyprint pretty)
{
  unsigned int i = 0;	/* Number of characters printed */
  unsigned len;
  struct type *elttype;
  unsigned eltlen;
  int length_pos, length_size, string_pos;
  int char_size;
  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_pascal)
		   && (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.) */
	  /* Extract the address, assume that it is unsigned.  */
	  print_address_demangle (extract_unsigned_integer (valaddr + embedded_offset, TYPE_LENGTH (type)),
				  stream, demangle);
	  break;
	}
      elttype = check_typedef (TYPE_TARGET_TYPE (type));
	{
	  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')
	    {
	      fputs_filtered (paddress (addr), 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
		  || TYPE_CODE(elttype) == TYPE_CODE_CHAR)
	      && (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  */
          if (is_pascal_string_type (elttype, &length_pos, &length_size,
                                     &string_pos, &char_size, NULL)
	      && addr != 0)
	    {
	      ULONGEST string_length;
              void *buffer;
              buffer = xmalloc (length_size);
              read_memory (addr + length_pos, buffer, length_size);
	      string_length = extract_unsigned_integer (buffer, length_size);
              xfree (buffer);
              i = val_print_string (addr + string_pos, string_length, char_size, 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_PRINT_NAME (msymbol), stream);
		  fputs_filtered (">", stream);
		}
	      if (vt_address && vtblprint)
		{
		  struct value *vt_val;
		  struct symbol *wsym = (struct symbol *) NULL;
		  struct type *wtype;
		  struct block *block = (struct block *) NULL;
		  int is_this_fld;

		  if (msymbol != NULL)
		    wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), block,
					  VAR_DOMAIN, &is_this_fld, NULL);

		  if (wsym)
		    {
		      wtype = SYMBOL_TYPE (wsym);
		    }
		  else
		    {
		      wtype = TYPE_TARGET_TYPE (type);
		    }
		  vt_val = value_at (wtype, vt_address);
		  common_val_print (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_REF:
      elttype = check_typedef (TYPE_TARGET_TYPE (type));
      if (addressprint)
	{
	  fprintf_filtered (stream, "@");
	  /* Extract the address, assume that it is unsigned.  */
	  fputs_filtered (paddress (
	    extract_unsigned_integer (valaddr + embedded_offset,
	       gdbarch_ptr_bit (current_gdbarch) / HOST_CHAR_BIT)), stream);
	  if (deref_ref)
	    fputs_filtered (": ", stream);
	}
      /* De-reference the reference.  */
      if (deref_ref)
	{
	  if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
	    {
	      struct value *deref_val =
	      value_at
	      (TYPE_TARGET_TYPE (type),
	       unpack_pointer (lookup_pointer_type (builtin_type_void),
			       valaddr + embedded_offset));
	      common_val_print (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.) */
	  /* Extract the address, assume that it is unsigned.  */
	  print_address_demangle
	    (extract_unsigned_integer (valaddr + embedded_offset + TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8,
				       TYPE_LENGTH (TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET))),
	     stream, demangle);
	}
      else
	{
          if (is_pascal_string_type (type, &length_pos, &length_size,
                                     &string_pos, &char_size, NULL))
	    {
	      len = extract_unsigned_integer (valaddr + embedded_offset + length_pos, length_size);
	      LA_PRINT_STRING (stream, valaddr + embedded_offset + string_pos, len, char_size, 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_FLAGS:
      if (format)
	  print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
      else
	val_print_type_code_flags (type, valaddr + embedded_offset, stream);
      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_STUB (elttype))
	{
	  fprintf_filtered (stream, "<incomplete type>");
	  gdb_flush (stream);
	  break;
	}
      else
	{
	  struct type *range = elttype;
	  LONGEST low_bound, high_bound;
	  int i;
	  int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING;
	  int need_comma = 0;

	  if (is_bitstring)
	    fputs_filtered ("B'", stream);
	  else
	    fputs_filtered ("[", stream);

	  i = get_discrete_bounds (range, &low_bound, &high_bound);
	maybe_bad_bstring:
	  if (i < 0)
	    {
	      fputs_filtered ("<error value>", stream);
	      goto done;
	    }

	  for (i = low_bound; i <= high_bound; i++)
	    {
	      int element = value_bit_index (type, valaddr + embedded_offset, i);
	      if (element < 0)
		{
		  i = element;
		  goto maybe_bad_bstring;
		}
	      if (is_bitstring)
		fprintf_filtered (stream, "%d", element);
	      else if (element)
		{
		  if (need_comma)
		    fputs_filtered (", ", stream);
		  print_type_scalar (range, i, stream);
		  need_comma = 1;

		  if (i + 1 <= high_bound && value_bit_index (type, valaddr + embedded_offset, ++i))
		    {
		      int j = i;
		      fputs_filtered ("..", stream);
		      while (i + 1 <= high_bound
			     && value_bit_index (type, valaddr + embedded_offset, ++i))
			j = i;
		      print_type_scalar (range, j, stream);
		    }
		}
	    }
	done:
	  if (is_bitstring)
	    fputs_filtered ("'", stream);
	  else
	    fputs_filtered ("]", stream);
	}
      break;

    case TYPE_CODE_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
f_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
	     CORE_ADDR address, struct ui_file *stream, int recurse,
	     const struct value *original_value,
	     const struct value_print_options *options)
{
  struct gdbarch *gdbarch = get_type_arch (type);
  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
  unsigned int i = 0;	/* Number of characters printed */
  struct type *elttype;
  LONGEST val;
  CORE_ADDR addr;
  int index;

  CHECK_TYPEDEF (type);
  switch (TYPE_CODE (type))
    {
    case TYPE_CODE_STRING:
      f77_get_dynamic_length_of_aggregate (type);
      LA_PRINT_STRING (stream, builtin_type (gdbarch)->builtin_char,
		       valaddr, TYPE_LENGTH (type), NULL, 0, options);
      break;

    case TYPE_CODE_ARRAY:
      fprintf_filtered (stream, "(");
      f77_print_array (type, valaddr, address, stream, recurse, original_value, options);
      fprintf_filtered (stream, ")");
      break;

    case TYPE_CODE_PTR:
      if (options->format && options->format != 's')
	{
	  print_scalar_formatted (valaddr, type, options, 0, stream);
	  break;
	}
      else
	{
	  addr = unpack_pointer (type, valaddr);
	  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 (gdbarch, addr, stream, demangle);
	      /* Return value is irrelevant except for string pointers.  */
	      return 0;
	    }

	  if (options->addressprint && options->format != 's')
	    fputs_filtered (paddress (gdbarch, addr), stream);

	  /* For a pointer to char or unsigned char, also print the string
	     pointed to, unless pointer is null.  */
	  if (TYPE_LENGTH (elttype) == 1
	      && TYPE_CODE (elttype) == TYPE_CODE_INT
	      && (options->format == 0 || options->format == 's')
	      && addr != 0)
	    i = val_print_string (TYPE_TARGET_TYPE (type), addr, -1, stream,
				  options);

	  /* 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_REF:
      elttype = check_typedef (TYPE_TARGET_TYPE (type));
      if (options->addressprint)
	{
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + embedded_offset, type);

	  fprintf_filtered (stream, "@");
	  fputs_filtered (paddress (gdbarch, addr), stream);
	  if (options->deref_ref)
	    fputs_filtered (": ", stream);
	}
      /* De-reference the reference.  */
      if (options->deref_ref)
	{
	  if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
	    {
	      struct value *deref_val =
		value_at
		(TYPE_TARGET_TYPE (type),
		 unpack_pointer (type, valaddr + embedded_offset));

	      common_val_print (deref_val, stream, recurse,
				options, current_language);
	    }
	  else
	    fputs_filtered ("???", stream);
	}
      break;

    case TYPE_CODE_FUNC:
      if (options->format)
	{
	  print_scalar_formatted (valaddr, type, options, 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 (gdbarch, address, stream, demangle);
      break;

    case TYPE_CODE_INT:
      if (options->format || options->output_format)
	{
	  struct value_print_options opts = *options;

	  opts.format = (options->format ? options->format
			 : options->output_format);
	  print_scalar_formatted (valaddr, type, &opts, 0, stream);
	}
      else
	{
	  val_print_type_code_int (type, valaddr, stream);
	  /* C and C++ has no single byte int type, char is used instead.
	     Since we don't know whether the value is really intended to
	     be used as an integer or a character, print the character
	     equivalent as well. */
	  if (TYPE_LENGTH (type) == 1)
	    {
	      fputs_filtered (" ", stream);
	      LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr),
			     type, stream);
	    }
	}
      break;

    case TYPE_CODE_FLAGS:
      if (options->format)
	  print_scalar_formatted (valaddr, type, options, 0, stream);
      else
	val_print_type_code_flags (type, valaddr, stream);
      break;

    case TYPE_CODE_FLT:
      if (options->format)
	print_scalar_formatted (valaddr, type, options, 0, stream);
      else
	print_floating (valaddr, type, stream);
      break;

    case TYPE_CODE_VOID:
      fprintf_filtered (stream, "VOID");
      break;

    case TYPE_CODE_ERROR:
      fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type));
      break;

    case TYPE_CODE_RANGE:
      /* FIXME, we should not ever have to print one of these yet.  */
      fprintf_filtered (stream, "<range type>");
      break;

    case TYPE_CODE_BOOL:
      if (options->format || options->output_format)
	{
	  struct value_print_options opts = *options;

	  opts.format = (options->format ? options->format
			 : options->output_format);
	  print_scalar_formatted (valaddr, type, &opts, 0, stream);
	}
      else
	{
	  val = extract_unsigned_integer (valaddr,
					  TYPE_LENGTH (type), byte_order);
	  if (val == 0)
	    fprintf_filtered (stream, ".FALSE.");
	  else if (val == 1)
	    fprintf_filtered (stream, ".TRUE.");
	  else
	    /* Not a legitimate logical type, print as an integer.  */
	    {
	      /* Bash the type code temporarily.  */
	      TYPE_CODE (type) = TYPE_CODE_INT;
	      val_print (type, valaddr, 0, address, stream, recurse,
			 original_value, options, current_language);
	      /* Restore the type code so later uses work as intended. */
	      TYPE_CODE (type) = TYPE_CODE_BOOL;
	    }
	}
      break;

    case TYPE_CODE_COMPLEX:
      type = TYPE_TARGET_TYPE (type);
      fputs_filtered ("(", stream);
      print_floating (valaddr, type, stream);
      fputs_filtered (",", stream);
      print_floating (valaddr + TYPE_LENGTH (type), type, stream);
      fputs_filtered (")", stream);
      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;

    case TYPE_CODE_STRUCT:
    case TYPE_CODE_UNION:
      /* Starting from the Fortran 90 standard, Fortran supports derived
         types.  */
      fprintf_filtered (stream, "( ");
      for (index = 0; index < TYPE_NFIELDS (type); index++)
        {
          int offset = TYPE_FIELD_BITPOS (type, index) / 8;

          val_print (TYPE_FIELD_TYPE (type, index), valaddr + offset,
		     embedded_offset, address, stream, recurse + 1,
		     original_value, options, current_language);
          if (index != TYPE_NFIELDS (type) - 1)
            fputs_filtered (", ", stream);
        }
      fprintf_filtered (stream, " )");
      break;     

    default:
      error (_("Invalid F77 type code %d in symbol table."), TYPE_CODE (type));
    }
  gdb_flush (stream);
  return 0;
}
Ejemplo n.º 10
0
static enum string_repr_result
print_string_repr (PyObject *printer, const char *hint,
		   struct ui_file *stream, int recurse,
		   const struct value_print_options *options,
		   const struct language_defn *language,
		   struct gdbarch *gdbarch)
{
  struct value *replacement = NULL;
  enum string_repr_result result = string_repr_ok;

  gdbpy_ref<> py_str (pretty_print_one_value (printer, &replacement));
  if (py_str != NULL)
    {
      if (py_str == Py_None)
	result = string_repr_none;
      else if (gdbpy_is_lazy_string (py_str.get ()))
	{
	  CORE_ADDR addr;
	  long length;
	  struct type *type;
	  gdb::unique_xmalloc_ptr<char> encoding;
	  struct value_print_options local_opts = *options;

	  gdbpy_extract_lazy_string (py_str.get (), &addr, &type,
				     &length, &encoding);

	  local_opts.addressprint = 0;
	  val_print_string (type, encoding.get (), addr, (int) length,
			    stream, &local_opts);
	}
      else
	{
	  gdbpy_ref<> string
	    (python_string_to_target_python_string (py_str.get ()));
	  if (string != NULL)
	    {
	      char *output;
	      long length;
	      struct type *type;

#ifdef IS_PY3K
	      output = PyBytes_AS_STRING (string.get ());
	      length = PyBytes_GET_SIZE (string.get ());
#else
	      output = PyString_AsString (string.get ());
	      length = PyString_Size (string.get ());
#endif
	      type = builtin_type (gdbarch)->builtin_char;

	      if (hint && !strcmp (hint, "string"))
		LA_PRINT_STRING (stream, type, (gdb_byte *) output,
				 length, NULL, 0, options);
	      else
		fputs_filtered (output, stream);
	    }
	  else
	    {
	      result = string_repr_error;
	      print_stack_unless_memory_error (stream);
	    }
	}
    }
  else if (replacement)
    {
      struct value_print_options opts = *options;

      opts.addressprint = 0;
      common_val_print (replacement, stream, recurse, &opts, language);
    }
  else
    {
      result = string_repr_error;
      print_stack_unless_memory_error (stream);
    }

  return result;
}
Ejemplo n.º 11
0
static enum string_repr_result
print_string_repr (PyObject *printer, const char *hint,
                   struct ui_file *stream, int recurse,
                   const struct value_print_options *options,
                   const struct language_defn *language,
                   struct gdbarch *gdbarch)
{
    struct value *replacement = NULL;
    PyObject *py_str = NULL;
    enum string_repr_result result = string_repr_ok;

    py_str = pretty_print_one_value (printer, &replacement);
    if (py_str)
    {
        struct cleanup *cleanup = make_cleanup_py_decref (py_str);

        if (py_str == Py_None)
            result = string_repr_none;
        else if (gdbpy_is_lazy_string (py_str))
        {
            CORE_ADDR addr;
            long length;
            struct type *type;
            char *encoding = NULL;
            struct value_print_options local_opts = *options;

            make_cleanup (free_current_contents, &encoding);
            gdbpy_extract_lazy_string (py_str, &addr, &type,
            &length, &encoding);

            local_opts.addressprint = 0;
            val_print_string (type, encoding, addr, (int) length,
            stream, &local_opts);
        }
        else
        {
            PyObject *string;

            string = python_string_to_target_python_string (py_str);
            if (string)
            {
                char *output;
                long length;
                struct type *type;

                make_cleanup_py_decref (string);
#ifdef IS_PY3K
                output = PyBytes_AS_STRING (string);
                length = PyBytes_GET_SIZE (string);
#else
                output = PyString_AsString (string);
                length = PyString_Size (string);
#endif
                type = builtin_type (gdbarch)->builtin_char;

                if (hint && !strcmp (hint, "string"))
                    LA_PRINT_STRING (stream, type, (gdb_byte *) output,
                                     length, NULL, 0, options);
                else
                    fputs_filtered (output, stream);
            }
            else
            {
                result = string_repr_error;
                print_stack_unless_memory_error (stream);
            }
        }

        do_cleanups (cleanup);
    }
    else if (replacement)
    {
        struct value_print_options opts = *options;

        opts.addressprint = 0;
        common_val_print (replacement, stream, recurse, &opts, language);
    }
    else
    {
        result = string_repr_error;
        print_stack_unless_memory_error (stream);
    }

    return result;
}
Ejemplo n.º 12
0
int
c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
	     CORE_ADDR address, struct ui_file *stream, int recurse,
	     const struct value_print_options *options)
{
  struct gdbarch *gdbarch = get_type_arch (type);
  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
  unsigned int i = 0;	/* Number of characters printed */
  unsigned len;
  struct type *elttype, *unresolved_elttype;
  struct type *unresolved_type = type;
  unsigned eltlen;
  LONGEST val;
  CORE_ADDR addr;

  CHECK_TYPEDEF (type);
  switch (TYPE_CODE (type))
    {
    case TYPE_CODE_ARRAY:
      unresolved_elttype = TYPE_TARGET_TYPE (type);
      elttype = check_typedef (unresolved_elttype);
      if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (unresolved_elttype) > 0)
	{
	  eltlen = TYPE_LENGTH (elttype);
	  len = TYPE_LENGTH (type) / eltlen;
	  if (options->prettyprint_arrays)
	    {
	      print_spaces_filtered (2 + 2 * recurse, stream);
	    }

	  /* Print arrays of textual chars with a string syntax.  */
          if (c_textual_element_type (unresolved_elttype, options->format))
	    {
	      /* 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;

		  for (temp_len = 0;
		       (temp_len < len
			&& temp_len < options->print_max
			&& extract_unsigned_integer (valaddr + embedded_offset
						     + temp_len * eltlen,
						     eltlen, byte_order) != 0);
		       ++temp_len)
		    ;
		  len = temp_len;
		}

	      LA_PRINT_STRING (stream, unresolved_elttype,
			       valaddr + embedded_offset, len,
			       NULL, 0, options);
	      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 (cp_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,
					recurse, options, i);
	      fprintf_filtered (stream, "}");
	    }
	  break;
	}
      /* Array of unspecified length: treat like pointer to first elt.  */
      addr = address;
      goto print_unpacked_pointer;

    case TYPE_CODE_MEMBERPTR:
      if (options->format)
	{
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  options, 0, stream);
	  break;
	}
      cp_print_class_member (valaddr + embedded_offset, type, stream, "&");
      break;

    case TYPE_CODE_METHODPTR:
      cplus_print_method_ptr (valaddr + embedded_offset, type, stream);
      break;

    case TYPE_CODE_PTR:
      if (options->format && options->format != 's')
	{
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  options, 0, stream);
	  break;
	}
      if (options->vtblprint && cp_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.) */
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + embedded_offset, type);
	  print_function_pointer_address (gdbarch, addr, stream,
					  options->addressprint);
	  break;
	}
      unresolved_elttype = TYPE_TARGET_TYPE (type);
      elttype = check_typedef (unresolved_elttype);
	{
	  addr = unpack_pointer (type, valaddr + embedded_offset);
	print_unpacked_pointer:

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

	  if (options->addressprint)
	    fputs_filtered (paddress (gdbarch, addr), stream);

	  /* For a pointer to a textual type, also print the string
	     pointed to, unless pointer is null.  */

	  if (c_textual_element_type (unresolved_elttype, options->format)
	      && addr != 0)
	    {
	      i = val_print_string (unresolved_elttype, addr, -1, stream,
				    options);
	    }
	  else if (cp_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_PRINT_NAME (msymbol), stream);
		  fputs_filtered (">", stream);
		}
	      if (vt_address && options->vtblprint)
		{
		  struct value *vt_val;
		  struct symbol *wsym = (struct symbol *) NULL;
		  struct type *wtype;
		  struct block *block = (struct block *) NULL;
		  int is_this_fld;

		  if (msymbol != NULL)
		    wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), block,
					  VAR_DOMAIN, &is_this_fld);

		  if (wsym)
		    {
		      wtype = SYMBOL_TYPE (wsym);
		    }
		  else
		    {
		      wtype = unresolved_elttype;
		    }
		  vt_val = value_at (wtype, vt_address);
		  common_val_print (vt_val, stream, recurse + 1, options,
				    current_language);
		  if (options->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_REF:
      elttype = check_typedef (TYPE_TARGET_TYPE (type));
      if (options->addressprint)
	{
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + embedded_offset, type);
	  fprintf_filtered (stream, "@");
	  fputs_filtered (paddress (gdbarch, addr), stream);
	  if (options->deref_ref)
	    fputs_filtered (": ", stream);
	}
      /* De-reference the reference.  */
      if (options->deref_ref)
	{
	  if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
	    {
	      struct value *deref_val =
	      value_at
	      (TYPE_TARGET_TYPE (type),
	       unpack_pointer (type, valaddr + embedded_offset));
	      common_val_print (deref_val, stream, recurse, options,
				current_language);
	    }
	  else
	    fputs_filtered ("???", stream);
	}
      break;

    case TYPE_CODE_UNION:
      if (recurse && !options->unionprint)
	{
	  fprintf_filtered (stream, "{...}");
	  break;
	}
      /* Fall through.  */
    case TYPE_CODE_STRUCT:
      /*FIXME: Abstract this away */
      if (options->vtblprint && cp_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.) */
	  int offset = (embedded_offset +
			TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8);
	  struct type *field_type = TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET);
	  CORE_ADDR addr
	    = extract_typed_address (valaddr + offset, field_type);

	  print_function_pointer_address (gdbarch, addr, stream,
					  options->addressprint);
	}
      else
	cp_print_value_fields_rtti (type, valaddr,
				    embedded_offset, address, stream,
				    recurse, options, NULL, 0);
      break;

    case TYPE_CODE_ENUM:
      if (options->format)
	{
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  options, 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_FLAGS:
      if (options->format)
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  options, 0, stream);
      else
	val_print_type_code_flags (type, valaddr + embedded_offset, stream);
      break;

    case TYPE_CODE_FUNC:
    case TYPE_CODE_METHOD:
      if (options->format)
	{
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  options, 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 (gdbarch, address, stream, demangle);
      break;

    case TYPE_CODE_BOOL:
      if (options->format || options->output_format)
	{
	  struct value_print_options opts = *options;
	  opts.format = (options->format ? options->format
			 : options->output_format);
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  &opts, 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
	    print_longest (stream, 'd', 0, 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:
      if (options->format || options->output_format)
	{
	  struct value_print_options opts = *options;
	  opts.format = (options->format ? options->format
			 : options->output_format);
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  &opts, 0, stream);
	}
      else
	{
	  val_print_type_code_int (type, valaddr + embedded_offset, stream);
	  /* C and C++ has no single byte int type, char is used instead.
	     Since we don't know whether the value is really intended to
	     be used as an integer or a character, print the character
	     equivalent as well.  */
	  if (c_textual_element_type (unresolved_type, options->format))
	    {
	      fputs_filtered (" ", stream);
	      LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr + embedded_offset),
			     unresolved_type, stream);
	    }
	}
      break;

    case TYPE_CODE_CHAR:
      if (options->format || options->output_format)
	{
	  struct value_print_options opts = *options;
	  opts.format = (options->format ? options->format
			 : options->output_format);
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  &opts, 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, unresolved_type, stream);
	}
      break;

    case TYPE_CODE_FLT:
      if (options->format)
	{
	  print_scalar_formatted (valaddr + embedded_offset, type,
				  options, 0, stream);
	}
      else
	{
	  print_floating (valaddr + embedded_offset, type, stream);
	}
      break;

    case TYPE_CODE_DECFLOAT:
      if (options->format)
	print_scalar_formatted (valaddr + embedded_offset, type,
				options, 0, stream);
      else
	print_decimal_floating (valaddr + embedded_offset, type, 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;

    case TYPE_CODE_COMPLEX:
      if (options->format)
	print_scalar_formatted (valaddr + embedded_offset,
				TYPE_TARGET_TYPE (type),
				options, 0, stream);
      else
	print_floating (valaddr + embedded_offset, TYPE_TARGET_TYPE (type),
			stream);
      fprintf_filtered (stream, " + ");
      if (options->format)
	print_scalar_formatted (valaddr + embedded_offset
				+ TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
				TYPE_TARGET_TYPE (type),
				options, 0, stream);
      else
	print_floating (valaddr + embedded_offset
			+ TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
			TYPE_TARGET_TYPE (type),
			stream);
      fprintf_filtered (stream, " * I");
      break;

    default:
      error (_("Invalid C/C++ type code %d in symbol table."), TYPE_CODE (type));
    }
  gdb_flush (stream);
  return (0);
}
Ejemplo n.º 13
0
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)
{
  struct gdbarch *gdbarch = get_type_arch (type);
  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_filtered (stream, _("<incomplete type>"));
	  gdb_flush (stream);
	  break;
	}
      else
	{
	  struct type *range = elttype;
	  LONGEST low_bound, high_bound;
	  int i;
	  int need_comma = 0;

	  fputs_filtered ("{", stream);

	  i = get_discrete_bounds (range, &low_bound, &high_bound);
	maybe_bad_bstring:
	  if (i < 0)
	    {
	      fputs_filtered (_("<error value>"), stream);
	      goto done;
	    }

	  for (i = low_bound; i <= high_bound; i++)
	    {
	      int element = value_bit_index (type, valaddr + embedded_offset,
					     i);

	      if (element < 0)
		{
		  i = element;
		  goto maybe_bad_bstring;
		}
	      if (element)
		{
		  if (need_comma)
		    fputs_filtered (", ", stream);
		  print_type_scalar (range, i, stream);
		  need_comma = 1;

		  if (i + 1 <= high_bound
		      && value_bit_index (type, valaddr + embedded_offset,
					  ++i))
		    {
		      int j = i;

		      fputs_filtered ("..", stream);
		      while (i + 1 <= high_bound
			     && value_bit_index (type,
						 valaddr + embedded_offset,
						 ++i))
			j = i;
		      print_type_scalar (range, j, stream);
		    }
		}
	    }
	done:
	  fputs_filtered ("}", stream);
	}
      break;

    case TYPE_CODE_RANGE:
      if (TYPE_LENGTH (type) == TYPE_LENGTH (TYPE_TARGET_TYPE (type)))
	{
	  m2_val_print (TYPE_TARGET_TYPE (type), 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;
    }
  gdb_flush (stream);
}