/* Internal type definitions for GDB.
- Copyright (C) 1992-2017 Free Software Foundation, Inc.
+ Copyright (C) 1992-2018 Free Software Foundation, Inc.
Contributed by Cygnus Support, using pieces from other GDB modules.
*/
#include "hashtab.h"
+#include "common/offset-type.h"
+#include "common/enum-flags.h"
+#include "common/underlying.h"
+#include "common/print-utils.h"
/* Forward declarations for prototypes. */
struct field;
/* * Offset relative to the start of its containing CU (compilation
unit). */
-typedef struct
-{
- unsigned int cu_off;
-} cu_offset;
+DEFINE_OFFSET_TYPE (cu_offset, unsigned int);
/* * Offset relative to the start of its .debug_info or .debug_types
section. */
+DEFINE_OFFSET_TYPE (sect_offset, uint64_t);
-typedef struct
+static inline char *
+sect_offset_str (sect_offset offset)
{
- unsigned int sect_off;
-} sect_offset;
+ return hex_string (to_underlying (offset));
+}
/* Some macros for char-based bitfields. */
TYPE_INSTANCE_FLAG_ATOMIC = (1 << 8)
};
+DEF_ENUM_FLAGS_TYPE (enum type_instance_flag_value, type_instance_flags);
+
/* * Unsigned integer type. If this is not set for a TYPE_CODE_INT,
the type is signed (unless TYPE_NOSIGN (below) is set). */
#define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
-/* * Static type. If this is set, the corresponding type had
- a static modifier.
- Note: This may be unnecessary, since static data members
- are indicated by other means (bitpos == -1). */
-
-#define TYPE_STATIC(t) (TYPE_MAIN_TYPE (t)->flag_static)
-
/* * This is a function type which appears to have a prototype. We
need this for function calls in order to tell us if it's necessary
to coerce the args, or to just do the standard conversions. This
#define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
+/* * True if this type is a discriminated union type. Only valid for
+ TYPE_CODE_UNION. A discriminated union stores a reference to the
+ discriminant field along with the discriminator values in a dynamic
+ property. */
+
+#define TYPE_FLAG_DISCRIMINATED_UNION(t) \
+ (TYPE_MAIN_TYPE (t)->flag_discriminated_union)
+
/* * Constant type. If this is set, the corresponding type has a
const modifier. */
-#define TYPE_CONST(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST)
+#define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
/* * Volatile type. If this is set, the corresponding type has a
volatile modifier. */
#define TYPE_VOLATILE(t) \
- (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE)
+ ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
/* * Restrict type. If this is set, the corresponding type has a
restrict modifier. */
#define TYPE_RESTRICT(t) \
- (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT)
+ ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
/* * Atomic type. If this is set, the corresponding type has an
_Atomic modifier. */
#define TYPE_ATOMIC(t) \
- (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC)
+ ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
/* * True if this type represents either an lvalue or lvalue reference type. */
is instruction space, and for data objects is data memory. */
#define TYPE_CODE_SPACE(t) \
- (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE)
+ ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
#define TYPE_DATA_SPACE(t) \
- (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE)
+ ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
/* * Address class flags. Some environments provide for pointers
whose size is different from that of a normal pointer or address
#define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
& TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
+/* * Information needed for a discriminated union. A discriminated
+ union is handled somewhat differently from an ordinary union.
+
+ One field is designated as the discriminant. Only one other field
+ is active at a time; which one depends on the value of the
+ discriminant and the data in this structure.
+
+ Additionally, it is possible to have a univariant discriminated
+ union. In this case, the union has just a single field, which is
+ assumed to be the only active variant -- in this case no
+ discriminant is provided. */
+
+struct discriminant_info
+{
+ /* * The index of the discriminant field. If -1, then this union
+ must have just a single field. */
+
+ int discriminant_index;
+
+ /* * The index of the default branch of the union. If -1, then
+ there is no default branch. */
+
+ int default_index;
+
+ /* * The discriminant values corresponding to each branch. This has
+ a number of entries equal to the number of fields in this union.
+ If discriminant_index is not -1, then that entry in this array is
+ not used. If default_index is not -1, then that entry in this
+ array is not used. */
+
+ ULONGEST discriminants[1];
+};
+
enum dynamic_prop_kind
{
PROP_UNDEFINED, /* Not defined. */
union dynamic_prop_data data;
};
+/* Compare two dynamic_prop objects for equality. dynamic_prop
+ instances are equal iff they have the same type and storage. */
+extern bool operator== (const dynamic_prop &l, const dynamic_prop &r);
+
+/* Compare two dynamic_prop objects for inequality. */
+static inline bool operator!= (const dynamic_prop &l, const dynamic_prop &r)
+{
+ return !(l == r);
+}
+
/* * Define a type's dynamic property node kind. */
enum dynamic_prop_node_kind
{
/* A property representing DW_AT_allocated. The presence of this attribute
indicated that the object of the type can be associated. */
DYN_PROP_ASSOCIATED,
+
+ /* A property providing an array's byte stride. */
+ DYN_PROP_BYTE_STRIDE,
+
+ /* A property holding information about a discriminated union. */
+ DYN_PROP_DISCRIMINATED,
};
/* * List for dynamic type attributes. */
int flag_bound_evaluated : 1;
};
+/* Compare two range_bounds objects for equality. Simply does
+ memberwise comparison. */
+extern bool operator== (const range_bounds &l, const range_bounds &r);
+
+/* Compare two range_bounds objects for inequality. */
+static inline bool operator!= (const range_bounds &l, const range_bounds &r)
+{
+ return !(l == r);
+}
+
union type_specific
{
/* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
struct gnat_aux_type *gnat_stuff;
- /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to two
- floatformat objects that describe the floating-point value
- that resides within the type. The first is for big endian
- targets and the second is for little endian targets. */
+ /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
+ floatformat object that describes the floating-point value
+ that resides within the type. */
- const struct floatformat **floatformat;
+ const struct floatformat *floatformat;
/* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
unsigned int flag_flag_enum : 1;
+ /* * True if this type is a discriminated union type. Only valid
+ for TYPE_CODE_UNION. A discriminated union stores a reference to
+ the discriminant field along with the discriminator values in a
+ dynamic property. */
+
+ unsigned int flag_discriminated_union : 1;
+
/* * A discriminant telling us which field of the type_specific
union is being used for this type, if any. */
struct dynamic_prop_list *dyn_prop_list;
};
+/* * Number of bits allocated for alignment. */
+
+#define TYPE_ALIGN_BITS 8
+
/* * A ``struct type'' describes a particular instance of a type, with
some particular qualification. */
struct type *chain;
+ /* * The alignment for this type. Zero means that the alignment was
+ not specified in the debug info. Note that this is stored in a
+ funny way: as the log base 2 (plus 1) of the alignment; so a
+ value of 1 means the alignment is 1, and a value of 9 means the
+ alignment is 256. */
+
+ unsigned align_log2 : TYPE_ALIGN_BITS;
+
/* * Flags specific to this instance of the type, indicating where
on the ring we are.
instance flags are completely inherited from the target type. No
qualifiers can be cleared by the typedef. See also
check_typedef. */
- int instance_flags;
+ unsigned instance_flags : 9;
/* * Length of storage for a value of this type. The value is the
expression in host bytes of what sizeof(type) would return. This
unsigned int is_volatile:1;
unsigned int is_private:1;
unsigned int is_protected:1;
- unsigned int is_public:1;
- unsigned int is_abstract:1;
- unsigned int is_static:1;
- unsigned int is_final:1;
- unsigned int is_synchronized:1;
- unsigned int is_native:1;
unsigned int is_artificial:1;
/* * A stub method only has some fields valid (but they are enough
/* * Unused. */
- unsigned int dummy:3;
+ unsigned int dummy:9;
/* * Index into that baseclass's virtual function table, minus 2;
else if static: VOFFSET_STATIC; else: 0. */
};
-struct typedef_field
+struct decl_field
{
/* * Unqualified name to be prefixed by owning class qualified
name. */
/* * Type this typedef named NAME represents. */
struct type *type;
+
+ /* * True if this field was declared protected, false otherwise. */
+ unsigned int is_protected : 1;
+
+ /* * True if this field was declared private, false otherwise. */
+ unsigned int is_private : 1;
};
/* * C++ language-specific information for TYPE_CODE_STRUCT and
/* * typedefs defined inside this class. typedef_field points to
an array of typedef_field_count elements. */
- struct typedef_field *typedef_field;
+ struct decl_field *typedef_field;
unsigned typedef_field_count;
+ /* * The nested types defined by this type. nested_types points to
+ an array of nested_types_count elements. */
+
+ struct decl_field *nested_types;
+
+ unsigned nested_types_count;
+
/* * The template arguments. This is an array with
N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
classes. */
DW_TAG_formal_parameter which is referenced by both
caller and the callee. */
- cu_offset param_offset;
+ cu_offset param_cu_off;
};
struct call_site_parameter
so you only have to call check_typedef once. Since allocate_value
calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
#define TYPE_LENGTH(thistype) (thistype)->length
+
+/* * Return the alignment of the type in target addressable memory
+ units, or 0 if no alignment was specified. */
+#define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
+
+/* * Return the alignment of the type in target addressable memory
+ units, or 0 if no alignment was specified. */
+extern unsigned type_raw_align (struct type *);
+
+/* * Return the alignment of the type in target addressable memory
+ units. Return 0 if the alignment cannot be determined; but note
+ that this makes an effort to compute the alignment even it it was
+ not specified in the debug info. */
+extern unsigned type_align (struct type *);
+
+/* * Set the alignment of the type. The alignment must be a power of
+ 2. Returns false if the given value does not fit in the available
+ space in struct type. */
+extern bool set_type_align (struct type *, ULONGEST);
+
/* * Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
type, you need to do TYPE_CODE (check_type (this_type)). */
#define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
#define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
#define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
#define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
-#define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public)
-#define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static)
-#define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final)
-#define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized)
-#define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native)
#define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
-#define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract)
#define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
#define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
#define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
#define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
#define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
+/* Accessors for typedefs defined by a class. */
#define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
#define TYPE_TYPEDEF_FIELD(thistype, n) \
TYPE_TYPEDEF_FIELD (thistype, n).type
#define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
+#define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
+ TYPE_TYPEDEF_FIELD (thistype, n).is_protected
+#define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
+ TYPE_TYPEDEF_FIELD (thistype, n).is_private
+
+#define TYPE_NESTED_TYPES_ARRAY(thistype) \
+ TYPE_CPLUS_SPECIFIC (thistype)->nested_types
+#define TYPE_NESTED_TYPES_FIELD(thistype, n) \
+ TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
+#define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
+ TYPE_NESTED_TYPES_FIELD (thistype, n).name
+#define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
+ TYPE_NESTED_TYPES_FIELD (thistype, n).type
+#define TYPE_NESTED_TYPES_COUNT(thistype) \
+ TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
+#define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
+ TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
+#define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
+ TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
#define TYPE_IS_OPAQUE(thistype) \
(((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) \
#define TYPE_ERROR_NAME(type) \
(TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>"))
+/* Given TYPE, return its floatformat. */
+const struct floatformat *floatformat_from_type (const struct type *type);
+
struct builtin_type
{
/* Integral types. */
/* Wide character types. */
struct type *builtin_char16;
struct type *builtin_char32;
+ struct type *builtin_wchar;
/* Pointer types. */
type is created using arch_flag_type(). Flags are then added using
append_flag_type_field() and append_flag_type_flag(). */
extern struct type *arch_flags_type (struct gdbarch *gdbarch,
- const char *name, int length);
+ const char *name, int bit);
extern void append_flags_type_field (struct type *type,
int start_bitpos, int nr_bits,
struct type *field_type, const char *name);
extern void make_vector_type (struct type *array_type);
extern struct type *init_vector_type (struct type *elt_type, int n);
-extern struct type *lookup_reference_type (struct type *);
+extern struct type *lookup_reference_type (struct type *, enum type_code);
+extern struct type *lookup_lvalue_reference_type (struct type *);
+extern struct type *lookup_rvalue_reference_type (struct type *);
+
-extern struct type *make_reference_type (struct type *, struct type **);
+extern struct type *make_reference_type (struct type *, struct type **,
+ enum type_code);
extern struct type *make_cv_type (int, int, struct type *, struct type **);
extern struct type *create_array_type_with_stride
- (struct type *, struct type *, struct type *, unsigned int);
+ (struct type *, struct type *, struct type *,
+ struct dynamic_prop *, unsigned int);
extern struct type *create_range_type (struct type *, struct type *,
const struct dynamic_prop *,
/* * Given a dynamic property PROP of a given KIND, add this dynamic
property to the given TYPE.
- This function assumes that TYPE is objfile-owned, and that OBJFILE
- is the TYPE's objfile. */
+ This function assumes that TYPE is objfile-owned. */
extern void add_dyn_prop
(enum dynamic_prop_node_kind kind, struct dynamic_prop prop,
- struct type *type, struct objfile *objfile);
+ struct type *type);
extern void remove_dyn_prop (enum dynamic_prop_node_kind prop_kind,
struct type *type);
extern const struct rank BOOL_CONVERSION_BADNESS;
/* * Badness of converting derived to base class. */
extern const struct rank BASE_CONVERSION_BADNESS;
-/* * Badness of converting from non-reference to reference. */
+/* * Badness of converting from non-reference to reference. Subrank
+ is the type of reference conversion being done. */
extern const struct rank REFERENCE_CONVERSION_BADNESS;
+/* * Conversion to rvalue reference. */
+#define REFERENCE_CONVERSION_RVALUE 1
+/* * Conversion to const lvalue reference. */
+#define REFERENCE_CONVERSION_CONST_LVALUE 2
+
/* * Badness of converting integer 0 to NULL pointer. */
extern const struct rank NULL_POINTER_CONVERSION;
+/* * Badness of cv-conversion. Subrank is a flag describing the conversions
+ being done. */
+extern const struct rank CV_CONVERSION_BADNESS;
+#define CV_CONVERSION_CONST 1
+#define CV_CONVERSION_VOLATILE 2
/* Non-standard conversions allowed by the debugger */
extern int is_integral_type (struct type *);
+extern int is_floating_type (struct type *);
+
extern int is_scalar_type (struct type *type);
extern int is_scalar_type_recursive (struct type *);
extern int class_or_union_p (const struct type *);
-extern void maintenance_print_type (char *, int);
+extern void maintenance_print_type (const char *, int);
extern htab_t create_copied_types_hash (struct objfile *objfile);
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