/* Support for printing C values for GDB, the GNU debugger.
- Copyright (C) 1986-2015 Free Software Foundation, Inc.
+ Copyright (C) 1986-2019 Free Software Foundation, Inc.
This file is part of GDB.
" * I",
"true",
"false",
- "void"
+ "void",
+ "{",
+ "}"
};
/* Print a pointer based on the type of its target.
if (vt_address && options->vtblprint)
{
struct value *vt_val;
- struct symbol *wsym = (struct symbol *) NULL;
+ struct symbol *wsym = 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 (MSYMBOL_LINKAGE_NAME(msymbol.minsym), block,
- VAR_DOMAIN, &is_this_fld);
+ {
+ const char *search_name
+ = MSYMBOL_SEARCH_NAME (msymbol.minsym);
+ wsym = lookup_symbol_search_name (search_name, NULL,
+ VAR_DOMAIN).symbol;
+ }
if (wsym)
{
}
}
-/* See val_print for a description of the various parameters of this
- function; they are identical. */
+/* c_val_print helper for TYPE_CODE_ARRAY. */
-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)
+static void
+c_val_print_array (struct type *type, const gdb_byte *valaddr,
+ 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);
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- unsigned len;
- struct type *elttype, *unresolved_elttype;
- struct type *unresolved_type = type;
- unsigned eltlen;
- CORE_ADDR addr;
+ struct type *unresolved_elttype = TYPE_TARGET_TYPE (type);
+ struct type *elttype = check_typedef (unresolved_elttype);
+ struct gdbarch *arch = get_type_arch (type);
+ int unit_size = gdbarch_addressable_memory_unit_size (arch);
- CHECK_TYPEDEF (type);
- switch (TYPE_CODE (type))
+ if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (unresolved_elttype) > 0)
{
- unsigned int i = 0; /* Number of characters printed. */
- 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;
+ LONGEST low_bound, high_bound;
+ int eltlen, len;
+ enum bfd_endian byte_order = type_byte_order (type);
+ unsigned int i = 0; /* Number of characters printed. */
- if (!get_array_bounds (type, &low_bound, &high_bound))
- error (_("Could not determine the array 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);
- }
+ 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_any_optimized_out (original_value,
- TARGET_CHAR_BIT * embedded_offset,
- TARGET_CHAR_BIT * TYPE_LENGTH (type)))
- {
- int force_ellipses = 0;
+ /* 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_any_optimized_out (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)
+ /* 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 * unit_size
+ + 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)
{
- 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;
+ ULONGEST val
+ = extract_unsigned_integer (valaddr
+ + embedded_offset * unit_size
+ + temp_len * eltlen,
+ eltlen, byte_order);
+ if (val != 0)
+ force_ellipses = 1;
}
- LA_PRINT_STRING (stream, unresolved_elttype,
- valaddr + embedded_offset, len,
- NULL, force_ellipses, options);
- i = len;
+ len = temp_len;
+ }
+
+ LA_PRINT_STRING (stream, unresolved_elttype,
+ valaddr + embedded_offset * unit_size, 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
{
- 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, "}");
+ i = 0;
}
- break;
+ val_print_array_elements (type, embedded_offset,
+ address, stream,
+ recurse, original_value, options, i);
+ fprintf_filtered (stream, "}");
}
+ }
+ else
+ {
/* Array of unspecified length: treat like pointer to first elt. */
print_unpacked_pointer (type, elttype, unresolved_elttype, valaddr,
embedded_offset, address + embedded_offset,
stream, recurse, options);
+ }
+}
+
+/* c_val_print helper for TYPE_CODE_PTR. */
+
+static void
+c_val_print_ptr (struct type *type, const gdb_byte *valaddr,
+ int embedded_offset, struct ui_file *stream, int recurse,
+ struct value *original_value,
+ const struct value_print_options *options)
+{
+ struct gdbarch *arch = get_type_arch (type);
+ int unit_size = gdbarch_addressable_memory_unit_size (arch);
+
+ if (options->format && options->format != 's')
+ {
+ val_print_scalar_formatted (type, embedded_offset,
+ original_value, options, 0, stream);
+ }
+ else 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);
+ struct gdbarch *gdbarch = get_type_arch (type);
+
+ print_function_pointer_address (options, gdbarch, addr, stream);
+ }
+ else
+ {
+ struct type *unresolved_elttype = TYPE_TARGET_TYPE (type);
+ struct type *elttype = check_typedef (unresolved_elttype);
+ CORE_ADDR addr = unpack_pointer (type,
+ valaddr + embedded_offset * unit_size);
+
+ print_unpacked_pointer (type, elttype, unresolved_elttype, valaddr,
+ embedded_offset, addr, stream, recurse, options);
+ }
+}
+
+/* c_val_print helper for TYPE_CODE_STRUCT. */
+
+static void
+c_val_print_struct (struct type *type, const gdb_byte *valaddr,
+ int embedded_offset, CORE_ADDR address,
+ struct ui_file *stream, int recurse,
+ struct value *original_value,
+ const struct value_print_options *options)
+{
+ 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.) */
+ struct gdbarch *gdbarch = get_type_arch (type);
+ 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);
+}
+
+/* c_val_print helper for TYPE_CODE_UNION. */
+
+static void
+c_val_print_union (struct type *type, const gdb_byte *valaddr,
+ int embedded_offset, CORE_ADDR address,
+ struct ui_file *stream, int recurse,
+ struct value *original_value,
+ const struct value_print_options *options)
+{
+ if (recurse && !options->unionprint)
+ {
+ fprintf_filtered (stream, "{...}");
+ }
+ else
+ {
+ c_val_print_struct (type, valaddr, embedded_offset, address, stream,
+ recurse, original_value, options);
+ }
+}
+
+/* c_val_print helper for TYPE_CODE_INT. */
+
+static void
+c_val_print_int (struct type *type, struct type *unresolved_type,
+ const gdb_byte *valaddr, int embedded_offset,
+ struct ui_file *stream, struct value *original_value,
+ const struct value_print_options *options)
+{
+ struct gdbarch *arch = get_type_arch (type);
+ int unit_size = gdbarch_addressable_memory_unit_size (arch);
+
+ 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, embedded_offset,
+ original_value, &opts, 0, stream);
+ }
+ else
+ {
+ val_print_scalar_formatted (type, embedded_offset,
+ original_value, options, 0, 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 * unit_size),
+ unresolved_type, stream);
+ }
+ }
+}
+
+/* c_val_print helper for TYPE_CODE_MEMBERPTR. */
+
+static void
+c_val_print_memberptr (struct type *type, const gdb_byte *valaddr,
+ int embedded_offset, CORE_ADDR address,
+ struct ui_file *stream, int recurse,
+ struct value *original_value,
+ const struct value_print_options *options)
+{
+ if (!options->format)
+ {
+ cp_print_class_member (valaddr + embedded_offset, type, stream, "&");
+ }
+ else
+ {
+ generic_val_print (type, embedded_offset, address, stream,
+ recurse, original_value, options, &c_decorations);
+ }
+}
+
+/* See val_print for a description of the various parameters of this
+ function; they are identical. */
+
+void
+c_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 type *unresolved_type = type;
+ const gdb_byte *valaddr = value_contents_for_printing (original_value);
+
+ type = check_typedef (type);
+ switch (TYPE_CODE (type))
+ {
+ case TYPE_CODE_ARRAY:
+ c_val_print_array (type, valaddr, embedded_offset, address, stream,
+ recurse, original_value, options);
break;
case TYPE_CODE_METHODPTR:
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);
- addr = unpack_pointer (type, valaddr + embedded_offset);
- print_unpacked_pointer (type, elttype, unresolved_elttype, valaddr,
- embedded_offset, addr, stream, recurse, options);
+ c_val_print_ptr (type, valaddr, embedded_offset, stream, recurse,
+ original_value, options);
break;
case TYPE_CODE_UNION:
- if (recurse && !options->unionprint)
- {
- fprintf_filtered (stream, "{...}");
- break;
- }
- /* Fall through. */
+ c_val_print_union (type, valaddr, embedded_offset, address, stream,
+ recurse, original_value, options);
+ break;
+
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);
+ c_val_print_struct (type, valaddr, embedded_offset, address, stream,
+ recurse, original_value, options);
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);
- }
- }
+ c_val_print_int (type, unresolved_type, valaddr, embedded_offset, stream,
+ original_value, options);
break;
case TYPE_CODE_MEMBERPTR:
- if (!options->format)
- {
- cp_print_class_member (valaddr + embedded_offset, type, stream, "&");
- break;
- }
- /* FALLTHROUGH */
+ c_val_print_memberptr (type, valaddr, embedded_offset, address, stream,
+ recurse, original_value, options);
+ break;
case TYPE_CODE_REF:
+ case TYPE_CODE_RVALUE_REF:
case TYPE_CODE_ENUM:
case TYPE_CODE_FLAGS:
case TYPE_CODE_FUNC:
case TYPE_CODE_COMPLEX:
case TYPE_CODE_CHAR:
default:
- generic_val_print (type, valaddr, embedded_offset, address,
+ generic_val_print (type, embedded_offset, address,
stream, recurse, original_value, options,
&c_decorations);
break;
}
- gdb_flush (stream);
}
\f
void
const struct value_print_options *options)
{
struct type *type, *real_type, *val_type;
- int full, top, using_enc;
+ int full, using_enc;
+ LONGEST top;
struct value_print_options opts = *options;
opts.deref_ref = 1;
val_type = value_type (val);
type = check_typedef (val_type);
- if (TYPE_CODE (type) == TYPE_CODE_PTR
- || TYPE_CODE (type) == TYPE_CODE_REF)
+ if (TYPE_CODE (type) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (type))
{
/* Hack: remove (char *) for char strings. Their
type is indicated by the quoted string anyway.
else if (options->objectprint
&& (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT))
{
- int is_ref = TYPE_CODE (type) == TYPE_CODE_REF;
+ int is_ref = TYPE_IS_REFERENCE (type);
+ enum type_code refcode = TYPE_CODE_UNDEF;
if (is_ref)
- val = value_addr (val);
+ {
+ val = value_addr (val);
+ refcode = TYPE_CODE (type);
+ }
/* Pointer to class, check real type of object. */
fprintf_filtered (stream, "(");
if (value_entirely_available (val))
- {
+ {
real_type = value_rtti_indirect_type (val, &full, &top,
&using_enc);
if (real_type)
val = value_from_pointer (real_type,
value_as_address (val) - top);
- if (is_ref)
- {
- val = value_ref (value_ind (val));
- type = value_type (val);
- }
-
/* Note: When we look up RTTI entries, we don't get
any information on const or volatile
attributes. */
}
}
- type_print (type, "", stream, -1);
+
+ if (is_ref)
+ {
+ val = value_ref (value_ind (val), refcode);
+ type = value_type (val);
+ }
+
+ type_print (type, "", stream, -1);
fprintf_filtered (stream, ") ");
val_type = type;
}
/* Print out object: enclosing type is same as real_type if
full. */
val_print (value_enclosing_type (val),
- value_contents_for_printing (val), 0,
+ 0,
value_address (val), stream, 0,
val, &opts, current_language);
return;
fprintf_filtered (stream, "(%s ?) ",
TYPE_NAME (value_enclosing_type (val)));
val_print (value_enclosing_type (val),
- value_contents_for_printing (val), 0,
+ 0,
value_address (val), stream, 0,
val, &opts, current_language);
return;
/* Otherwise, we end up at the return outside this "if". */
}
- val_print (val_type, value_contents_for_printing (val),
+ val_print (val_type,
value_embedded_offset (val),
value_address (val),
stream, 0,