/* Definitions for values of C expressions, for GDB.
- Copyright (C) 1986-2016 Free Software Foundation, Inc.
+ Copyright (C) 1986-2017 Free Software Foundation, Inc.
This file is part of GDB.
extern struct internalvar **deprecated_value_internalvar_hack (struct value *);
#define VALUE_INTERNALVAR(val) (*deprecated_value_internalvar_hack (val))
-/* Frame register value is relative to. This will be described in the
- lval enum above as "lval_register". */
-extern struct frame_id *deprecated_value_frame_id_hack (struct value *);
-#define VALUE_FRAME_ID(val) (*deprecated_value_frame_id_hack (val))
+/* Frame ID of "next" frame to which a register value is relative. A
+ register value is indicated by VALUE_LVAL being set to lval_register.
+ So, if the register value is found relative to frame F, then the
+ frame id of F->next will be stored in VALUE_NEXT_FRAME_ID. */
+extern struct frame_id *deprecated_value_next_frame_id_hack (struct value *);
+#define VALUE_NEXT_FRAME_ID(val) (*deprecated_value_next_frame_id_hack (val))
+
+/* Frame ID of frame to which a register value is relative. This is
+ similar to VALUE_NEXT_FRAME_ID, above, but may not be assigned to.
+ Note that VALUE_FRAME_ID effectively undoes the "next" operation
+ that was performed during the assignment to VALUE_NEXT_FRAME_ID. */
+#define VALUE_FRAME_ID(val) (get_prev_frame_id_by_id (VALUE_NEXT_FRAME_ID (val)))
/* Register number if the value is from a register. */
-extern short *deprecated_value_regnum_hack (struct value *);
+extern int *deprecated_value_regnum_hack (struct value *);
#define VALUE_REGNUM(val) (*deprecated_value_regnum_hack (val))
/* Return value after lval_funcs->coerce_ref (after check_typedef). Return
/* Read LENGTH addressable memory units starting at MEMADDR into BUFFER,
which is (or will be copied to) VAL's contents buffer offset by
- EMBEDDED_OFFSET (that is, to &VAL->contents[EMBEDDED_OFFSET]).
- Marks value contents ranges as unavailable if the corresponding
- memory is likewise unavailable. STACK indicates whether the memory
- is known to be stack memory. */
+ BIT_OFFSET bits. Marks value contents ranges as unavailable if
+ the corresponding memory is likewise unavailable. STACK indicates
+ whether the memory is known to be stack memory. */
-extern void read_value_memory (struct value *val, LONGEST embedded_offset,
+extern void read_value_memory (struct value *val, LONGEST bit_offset,
int stack, CORE_ADDR memaddr,
gdb_byte *buffer, size_t length);
struct gdbarch *, CORE_ADDR,
struct ui_file *, int);
+/* Returns true if VAL is of floating-point type. In addition,
+ throws an error if the value is an invalid floating-point value. */
+extern bool is_floating_value (struct value *val);
+
extern LONGEST value_as_long (struct value *val);
extern DOUBLEST value_as_double (struct value *val);
extern CORE_ADDR value_as_address (struct value *val);
extern struct value *value_from_decfloat (struct type *type,
const gdb_byte *decbytes);
extern struct value *value_from_history_ref (const char *, const char **);
+extern struct value *value_from_component (struct value *, struct type *,
+ LONGEST);
extern struct value *value_at (struct type *type, CORE_ADDR addr);
extern struct value *value_at_lazy (struct type *type, CORE_ADDR addr);
extern void value_free_to_mark (const struct value *mark);
+/* A helper class that uses value_mark at construction time and calls
+ value_free_to_mark in the destructor. This is used to clear out
+ temporary values created during the lifetime of this object. */
+class scoped_value_mark
+{
+ public:
+
+ scoped_value_mark ()
+ : m_value (value_mark ())
+ {
+ }
+
+ ~scoped_value_mark ()
+ {
+ free_to_mark ();
+ }
+
+ scoped_value_mark (scoped_value_mark &&other) = default;
+
+ DISABLE_COPY_AND_ASSIGN (scoped_value_mark);
+
+ /* Free the values currently on the value stack. */
+ void free_to_mark ()
+ {
+ if (m_value != NULL)
+ {
+ value_free_to_mark (m_value);
+ m_value = NULL;
+ }
+ }
+
+ private:
+
+ const struct value *m_value;
+};
+
extern struct value *value_cstring (const char *ptr, ssize_t len,
struct type *char_type);
extern struct value *value_string (const char *ptr, ssize_t len,
extern struct value *value_addr (struct value *arg1);
-extern struct value *value_ref (struct value *arg1);
+extern struct value *value_ref (struct value *arg1, enum type_code refcode);
extern struct value *value_assign (struct value *toval,
struct value *fromval);
extern struct internalvar *create_internalvar (const char *name);
-extern VEC (char_ptr) *complete_internalvar (const char *name);
+extern void complete_internalvar (completion_tracker &tracker,
+ const char *name);
/* An internalvar can be dynamically computed by supplying a vector of
function pointers to perform various operations. */
extern void value_free (struct value *val);
+/* A free policy class to interface std::unique_ptr with
+ value_free. */
+
+struct value_deleter
+{
+ void operator() (struct value *value) const
+ {
+ value_free (value);
+ }
+};
+
+/* A unique pointer to a struct value. */
+
+typedef std::unique_ptr<struct value, value_deleter> gdb_value_up;
+
extern void free_all_values (void);
extern void free_value_chain (struct value *v);
extern void type_print (struct type *type, const char *varstring,
struct ui_file *stream, int show);
-extern char *type_to_string (struct type *type);
+extern std::string type_to_string (struct type *type);
extern gdb_byte *baseclass_addr (struct type *type, int index,
gdb_byte *valaddr,
extern void print_floating (const gdb_byte *valaddr, struct type *type,
struct ui_file *stream);
-extern void print_decimal_floating (const gdb_byte *valaddr, struct type *type,
- struct ui_file *stream);
-
extern void value_print (struct value *val, struct ui_file *stream,
const struct value_print_options *options);
extern struct value *value_release_to_mark (const struct value *mark);
-extern void val_print (struct type *type, const gdb_byte *valaddr,
+extern void val_print (struct type *type,
LONGEST embedded_offset, CORE_ADDR address,
struct ui_file *stream, int recurse,
- const struct value *val,
+ struct value *val,
const struct value_print_options *options,
const struct language_defn *language);
projects / deliverable / binutils-gdb.git / blobdiff