/* Support for printing C values for GDB, the GNU debugger.
Copyright (C) 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000, 2001, 2003, 2005, 2006, 2007, 2008
+ 1998, 1999, 2000, 2001, 2003, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
This file is part of GDB.
stream STREAM. */
static void
-print_function_pointer_address (CORE_ADDR address, struct ui_file *stream,
- int addressprint)
+print_function_pointer_address (struct gdbarch *gdbarch, CORE_ADDR address,
+ struct ui_file *stream, int addressprint)
{
- CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch,
- address,
+ CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr (gdbarch, address,
¤t_target);
/* If the function pointer is represented by a description, print the
if (addressprint && func_addr != address)
{
fputs_filtered ("@", stream);
- fputs_filtered (paddress (address), stream);
+ fputs_filtered (paddress (gdbarch, address), stream);
fputs_filtered (": ", stream);
}
- print_address_demangle (func_addr, stream, demangle);
+ print_address_demangle (gdbarch, func_addr, stream, demangle);
}
+/* A helper for c_textual_element_type. This checks the name of the
+ typedef. This is bogus but it isn't apparent that the compiler
+ provides us the help we may need. */
+
+static int
+textual_name (const char *name)
+{
+ return (!strcmp (name, "wchar_t")
+ || !strcmp (name, "char16_t")
+ || !strcmp (name, "char32_t"));
+}
+
/* Apply a heuristic to decide whether an array of TYPE or a pointer
to TYPE should be printed as a textual string. Return non-zero if
it should, or zero if it should be treated as an array of integers
vector types is not. The user can override this by using the /s
format letter. */
-static int
-textual_element_type (struct type *type, char format)
+int
+c_textual_element_type (struct type *type, char format)
{
- struct type *true_type = check_typedef (type);
+ struct type *true_type, *iter_type;
if (format != 0 && format != 's')
return 0;
+ /* We also rely on this for its side effect of setting up all the
+ typedef pointers. */
+ true_type = check_typedef (type);
+
/* TYPE_CODE_CHAR is always textual. */
if (TYPE_CODE (true_type) == TYPE_CODE_CHAR)
return 1;
+ /* Any other character-like types must be integral. */
+ if (TYPE_CODE (true_type) != TYPE_CODE_INT)
+ return 0;
+
+ /* We peel typedefs one by one, looking for a match. */
+ iter_type = type;
+ while (iter_type)
+ {
+ /* Check the name of the type. */
+ if (TYPE_NAME (iter_type) && textual_name (TYPE_NAME (iter_type)))
+ return 1;
+
+ if (TYPE_CODE (iter_type) != TYPE_CODE_TYPEDEF)
+ break;
+
+ /* Peel a single typedef. If the typedef doesn't have a target
+ type, we use check_typedef and hope the result is ok -- it
+ might be for C++, where wchar_t is a built-in type. */
+ if (TYPE_TARGET_TYPE (iter_type))
+ iter_type = TYPE_TARGET_TYPE (iter_type);
+ else
+ iter_type = check_typedef (iter_type);
+ }
+
if (format == 's')
{
/* Print this as a string if we can manage it. For now, no
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 *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;
+ struct type *elttype, *unresolved_elttype;
+ struct type *unresolved_type = type;
unsigned eltlen;
LONGEST val;
CORE_ADDR addr;
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)
+ 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;
print_spaces_filtered (2 + 2 * recurse, stream);
}
- /* Print arrays of textual chars with a string syntax. */
- if (textual_element_type (elttype, options->format))
+ /* Print arrays of textual chars with a string syntax, as
+ long as the entire array is valid. */
+ if (!TYPE_VECTOR (type)
+ && c_textual_element_type (unresolved_elttype, options->format)
+ && value_bits_valid (original_value,
+ TARGET_CHAR_BIT * embedded_offset,
+ TARGET_CHAR_BIT * TYPE_LENGTH (type)))
{
/* If requested, look for the first null char and only print
elements up to it. */
{
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++);
+ (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, valaddr + embedded_offset, len, eltlen, 0, options);
+ LA_PRINT_STRING (stream, unresolved_elttype,
+ valaddr + embedded_offset, len,
+ NULL, 0, options);
i = len;
}
else
{
i = 0;
}
- val_print_array_elements (type, valaddr + embedded_offset, address, stream,
- recurse, options, i);
+ val_print_array_elements (type, valaddr + embedded_offset,
+ address + embedded_offset, stream,
+ recurse, original_value, options, i);
fprintf_filtered (stream, "}");
}
break;
-fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */
CORE_ADDR addr
= extract_typed_address (valaddr + embedded_offset, type);
- print_function_pointer_address (addr, stream, options->addressprint);
+
+ print_function_pointer_address (gdbarch, addr, stream,
+ options->addressprint);
break;
}
- elttype = check_typedef (TYPE_TARGET_TYPE (type));
+ 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 (addr, stream,
+ 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 (addr), stream);
+ fputs_filtered (paddress (gdbarch, addr), stream);
/* For a pointer to a textual type, also print the string
pointed to, unless pointer is null. */
- /* FIXME: need to handle wchar_t here... */
- if (textual_element_type (elttype, options->format)
+ if (c_textual_element_type (unresolved_elttype, options->format)
&& addr != 0)
{
- i = val_print_string (addr, -1, TYPE_LENGTH (elttype), stream,
+ i = val_print_string (unresolved_elttype, addr, -1, stream,
options);
}
else if (cp_is_vtbl_member (type))
struct minimal_symbol *msymbol =
lookup_minimal_symbol_by_pc (vt_address);
- if ((msymbol != NULL) &&
- (vt_address == SYMBOL_VALUE_ADDRESS (msymbol)))
+ if ((msymbol != NULL)
+ && (vt_address == SYMBOL_VALUE_ADDRESS (msymbol)))
{
fputs_filtered (" <", stream);
fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream);
}
else
{
- wtype = TYPE_TARGET_TYPE (type);
+ wtype = unresolved_elttype;
}
vt_val = value_at (wtype, vt_address);
common_val_print (vt_val, stream, recurse + 1, options,
{
CORE_ADDR addr
= extract_typed_address (valaddr + embedded_offset, type);
+
fprintf_filtered (stream, "@");
- fputs_filtered (paddress (addr), stream);
+ fputs_filtered (paddress (gdbarch, addr), stream);
if (options->deref_ref)
fputs_filtered (": ", stream);
}
if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
{
struct value *deref_val =
- value_at
- (TYPE_TARGET_TYPE (type),
- unpack_pointer (type, valaddr + embedded_offset));
+ value_at
+ (TYPE_TARGET_TYPE (type),
+ unpack_pointer (type, valaddr + embedded_offset));
+
common_val_print (deref_val, stream, recurse, options,
current_language);
}
CORE_ADDR addr
= extract_typed_address (valaddr + offset, field_type);
- print_function_pointer_address (addr, stream, options->addressprint);
+ print_function_pointer_address (gdbarch, addr, stream,
+ options->addressprint);
}
else
- cp_print_value_fields (type, type, valaddr, embedded_offset, address, stream,
- recurse, options, NULL, 0);
+ cp_print_value_fields_rtti (type, valaddr,
+ embedded_offset, address, stream,
+ recurse, original_value, options, NULL, 0);
break;
case TYPE_CODE_ENUM:
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);
+ 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,
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 (textual_element_type (type, options->format))
+ if (c_textual_element_type (unresolved_type, options->format))
{
fputs_filtered (" ", stream);
LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr + embedded_offset),
- stream);
+ unresolved_type, stream);
}
}
break;
else
fprintf_filtered (stream, "%d", (int) val);
fputs_filtered (" ", stream);
- LA_PRINT_CHAR ((unsigned char) val, stream);
+ LA_PRINT_CHAR ((unsigned char) val, unresolved_type, stream);
}
break;
break;
case TYPE_CODE_ERROR:
- fprintf_filtered (stream, _("<error type>"));
+ fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type));
break;
case TYPE_CODE_UNDEF:
c_value_print (struct value *val, struct ui_file *stream,
const struct value_print_options *options)
{
- struct type *type, *real_type;
+ struct type *type, *real_type, *val_type;
int full, top, using_enc;
struct value_print_options opts = *options;
C++: if it is a member pointer, we will take care
of that when we print it. */
- type = check_typedef (value_type (val));
+ /* Preserve the original type before stripping typedefs. We prefer
+ to pass down the original type when possible, but for local
+ checks it is better to look past the typedefs. */
+ val_type = value_type (val);
+ type = check_typedef (val_type);
if (TYPE_CODE (type) == TYPE_CODE_PTR
|| TYPE_CODE (type) == TYPE_CODE_REF)
{
/* Hack: remove (char *) for char strings. Their
type is indicated by the quoted string anyway.
- (Don't use textual_element_type here; quoted strings
- are always exactly (char *). */
- if (TYPE_CODE (type) == TYPE_CODE_PTR
- && TYPE_NAME (type) == NULL
- && TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL
- && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0)
+ (Don't use c_textual_element_type here; quoted strings
+ are always exactly (char *), (wchar_t *), or the like. */
+ if (TYPE_CODE (val_type) == TYPE_CODE_PTR
+ && TYPE_NAME (val_type) == NULL
+ && TYPE_NAME (TYPE_TARGET_TYPE (val_type)) != NULL
+ && (strcmp (TYPE_NAME (TYPE_TARGET_TYPE (val_type)), "char") == 0
+ || textual_name (TYPE_NAME (TYPE_TARGET_TYPE (val_type)))))
{
/* Print nothing */
}
}
type_print (type, "", stream, -1);
fprintf_filtered (stream, ") ");
+ val_type = type;
}
else
{
full ? "" : _(" [incomplete object]"));
/* Print out object: enclosing type is same as real_type if full */
return val_print (value_enclosing_type (val),
- value_contents_all (val), 0,
- VALUE_ADDRESS (val), stream, 0,
- &opts, current_language);
+ value_contents_for_printing (val), 0,
+ value_address (val), stream, 0,
+ val, &opts, current_language);
/* Note: When we look up RTTI entries, we don't get any information on
const or volatile attributes */
}
fprintf_filtered (stream, "(%s ?) ",
TYPE_NAME (value_enclosing_type (val)));
return val_print (value_enclosing_type (val),
- value_contents_all (val), 0,
- VALUE_ADDRESS (val), stream, 0,
- &opts, current_language);
+ value_contents_for_printing (val), 0,
+ value_address (val), stream, 0,
+ val, &opts, current_language);
}
/* Otherwise, we end up at the return outside this "if" */
}
- return val_print (type, value_contents_all (val),
+ return val_print (val_type, value_contents_for_printing (val),
value_embedded_offset (val),
- VALUE_ADDRESS (val) + value_offset (val),
- stream, 0, &opts, current_language);
+ value_address (val),
+ stream, 0,
+ val, &opts, current_language);
}
projects / binutils-gdb.git / blobdiff