/* Definitions for values of C expressions, for GDB.
- Copyright (C) 1986-2018 Free Software Foundation, Inc.
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "frame.h" /* For struct frame_id. */
#include "extension.h"
-#include "common/gdb_ref_ptr.h"
+#include "gdbsupport/gdb_ref_ptr.h"
struct block;
struct expression;
value_contents_eq for more info.
*/
+extern bool overload_resolution;
+
/* The structure which defines the type of a value. It should never
be possible for a program lval value to survive over a call to the
inferior (i.e. to be put into the history list or an internal
struct value;
-/* Decrease VAL's reference count. When the reference count drops to
- 0, VAL will be freed. */
+/* Increase VAL's reference count. */
-extern struct value *value_incref (struct value *val);
+extern void value_incref (struct value *val);
-/* Increate VAL's reference count. VAL is returned. */
+/* Decrease VAL's reference count. When the reference count drops to
+ 0, VAL will be freed. */
extern void value_decref (struct value *val);
extern void set_value_bitsize (struct value *, LONGEST bit);
/* Only used for bitfields; position of start of field. For
- gdbarch_bits_big_endian=0 targets, it is the position of the LSB. For
- gdbarch_bits_big_endian=1 targets, it is the position of the MSB. */
+ little-endian targets, it is the position of the LSB. For
+ big-endian targets, it is the position of the MSB. */
extern LONGEST value_bitpos (const struct value *);
extern void set_value_bitpos (struct value *, LONGEST bit);
Optimized-out contents are equal to optimized-out contents, and are
not equal to non-optimized-out contents.
- Unavailable contente are equal to unavailable contents, and are not
+ Unavailable contents are equal to unavailable contents, and are not
equal to non-unavailable contents.
For example, if 'x's represent an unavailable byte, and 'V' and 'Z'
extern struct value *value_from_longest (struct type *type, LONGEST num);
extern struct value *value_from_ulongest (struct type *type, ULONGEST num);
extern struct value *value_from_pointer (struct type *type, CORE_ADDR addr);
+extern struct value *value_from_host_double (struct type *type, double d);
extern struct value *value_from_history_ref (const char *, const char **);
extern struct value *value_from_component (struct value *, struct type *,
LONGEST);
extern LONGEST value_ptrdiff (struct value *arg1, struct value *arg2);
-extern int value_must_coerce_to_target (struct value *arg1);
+/* Return true if VAL does not live in target memory, but should in order
+ to operate on it. Otherwise return false. */
+
+extern bool value_must_coerce_to_target (struct value *arg1);
extern struct value *value_coerce_to_target (struct value *arg1);
enum oload_search_type { NON_METHOD, METHOD, BOTH };
-extern int find_overload_match (struct value **args, int nargs,
+extern int find_overload_match (gdb::array_view<value *> args,
const char *name,
enum oload_search_type method,
struct value **objp, struct symbol *fsym,
extern void fetch_subexp_value (struct expression *exp, int *pc,
struct value **valp, struct value **resultp,
- struct value **val_chain,
+ std::vector<value_ref_ptr> *val_chain,
int preserve_errors);
extern const char *extract_field_op (struct expression *exp, int *subexp);
extern int destructor_name_p (const char *name, struct type *type);
-extern void free_all_values (void);
-
-extern void free_value_chain (struct value *v);
-
extern value_ref_ptr release_value (struct value *val);
extern int record_latest_value (struct value *val);
struct ui_file *stream, int format,
enum val_prettyformat pretty);
-extern struct value *value_release_to_mark (const struct value *mark);
+/* Release values from the value chain and return them. Values
+ created after MARK are released. If MARK is nullptr, or if MARK is
+ not found on the value chain, then all values are released. Values
+ are returned in reverse order of creation; that is, newest
+ first. */
+
+extern std::vector<value_ref_ptr> value_release_to_mark
+ (const struct value *mark);
extern void val_print (struct type *type,
LONGEST embedded_offset, CORE_ADDR address,
extern struct value *value_allocate_space_in_inferior (int);
extern struct value *value_subscripted_rvalue (struct value *array,
- LONGEST index, int lowerbound);
+ LONGEST index,
+ LONGEST lowerbound);
/* User function handler. */
int argc,
struct value **argv);
-void add_internal_function (const char *name, const char *doc,
- internal_function_fn handler,
- void *cookie);
+/* Add a new internal function. NAME is the name of the function; DOC
+ is a documentation string describing the function. HANDLER is
+ called when the function is invoked. COOKIE is an arbitrary
+ pointer which is passed to HANDLER and is intended for "user
+ data". */
+
+extern void add_internal_function (const char *name, const char *doc,
+ internal_function_fn handler,
+ void *cookie);
+
+/* This overload takes an allocated documentation string. */
+
+extern void add_internal_function (gdb::unique_xmalloc_ptr<char> &&name,
+ gdb::unique_xmalloc_ptr<char> &&doc,
+ internal_function_fn handler,
+ void *cookie);
struct value *call_internal_function (struct gdbarch *gdbarch,
const struct language_defn *language,
extern struct value *value_from_xmethod (xmethod_worker_up &&worker);
extern struct type *result_type_of_xmethod (struct value *method,
- int argc, struct value **argv);
+ gdb::array_view<value *> argv);
extern struct value *call_xmethod (struct value *method,
- int argc, struct value **argv);
+ gdb::array_view<value *> argv);
/* Given a discriminated union type and some corresponding value
contents, this will return the field index of the currently active
extern int value_union_variant (struct type *union_type,
const gdb_byte *contents);
+/* Destroy the values currently allocated. This is called when GDB is
+ exiting (e.g., on quit_force). */
+extern void finalize_values ();
+
#endif /* !defined (VALUE_H) */
projects / deliverable / binutils-gdb.git / blobdiff