extern int value_embedded_offset (struct value *value);
extern void set_value_embedded_offset (struct value *value, int val);
+/* For lval_computed values, this structure holds functions used to
+ retrieve and set the value (or portions of the value).
+
+ For each function, 'V' is the 'this' pointer: an lval_funcs
+ function F may always assume that the V it receives is an
+ lval_computed value, and has F in the appropriate slot of its
+ lval_funcs structure. */
+
+struct lval_funcs
+{
+ /* Fill in VALUE's contents. This is used to "un-lazy" values. If
+ a problem arises in obtaining VALUE's bits, this function should
+ call 'error'. */
+ void (*read) (struct value *v);
+
+ /* Handle an assignment TOVAL = FROMVAL by writing the value of
+ FROMVAL to TOVAL's location. The contents of TOVAL have not yet
+ been updated. If a problem arises in doing so, this function
+ should call 'error'. */
+ void (*write) (struct value *toval, struct value *fromval);
+
+ /* Return a duplicate of VALUE's closure, for use in a new value.
+ This may simply return the same closure, if VALUE's is
+ reference-counted or statically allocated.
+
+ This may be NULL, in which case VALUE's closure is re-used in the
+ new value. */
+ void *(*copy_closure) (struct value *v);
+
+ /* Drop VALUE's reference to its closure. Maybe this frees the
+ closure; maybe this decrements a reference count; maybe the
+ closure is statically allocated and this does nothing.
+
+ This may be NULL, in which case no action is taken to free
+ VALUE's closure. */
+ void (*free_closure) (struct value *v);
+};
+
+/* Create a computed lvalue, with type TYPE, function pointers FUNCS,
+ and closure CLOSURE. */
+
+extern struct value *allocate_computed_value (struct type *type,
+ struct lval_funcs *funcs,
+ void *closure);
+
+/* If VALUE is lval_computed, return its lval_funcs structure. */
+
+extern struct lval_funcs *value_computed_funcs (struct value *value);
+
+/* If VALUE is lval_computed, return its closure. The meaning of the
+ returned value depends on the functions VALUE uses. */
+
+extern void *value_computed_closure (struct value *value);
+
/* If zero, contents of this value are in the contents field. If
nonzero, contents are in inferior. If the lval field is lval_memory,
the contents are in inferior memory at location.address plus offset.
extern enum lval_type *deprecated_value_lval_hack (struct value *);
#define VALUE_LVAL(val) (*deprecated_value_lval_hack (val))
-/* If lval == lval_memory, this is the address in the inferior. If
- lval == lval_register, this is the byte offset into the registers
- structure. */
-extern CORE_ADDR *deprecated_value_address_hack (struct value *);
-#define VALUE_ADDRESS(val) (*deprecated_value_address_hack (val))
+/* If lval == lval_memory, return the address in the inferior. If
+ lval == lval_register, return the byte offset into the registers
+ structure. Otherwise, return 0. The returned address
+ includes the offset, if any. */
+extern CORE_ADDR value_address (struct value *);
+
+/* Like value_address, except the result does not include value's
+ offset. */
+extern CORE_ADDR value_raw_address (struct value *);
+
+/* Set the address of a value. */
+extern void set_value_address (struct value *, CORE_ADDR);
/* Pointer to internal variable. */
extern struct internalvar **deprecated_value_internalvar_hack (struct value *);
extern struct value *coerce_array (struct value *value);
-/* Internal variables (variables for convenience of use of debugger)
- are recorded as a chain of these structures. */
-
-struct internalvar
-{
- struct internalvar *next;
- char *name;
- struct value *value;
- int endian;
-};
-
\f
#include "symtab.h"
extern void value_free_to_mark (struct value *mark);
+extern struct value *value_typed_string (char *ptr, int len,
+ struct type *char_type);
extern struct value *value_string (char *ptr, int len);
extern struct value *value_bitstring (char *ptr, int len);
extern struct value *value_of_internalvar (struct internalvar *var);
+extern int get_internalvar_integer (struct internalvar *var, LONGEST *l);
+
extern void set_internalvar (struct internalvar *var, struct value *val);
+extern void set_internalvar_integer (struct internalvar *var, LONGEST l);
+
+extern void clear_internalvar (struct internalvar *var);
+
extern void set_internalvar_component (struct internalvar *var,
int offset,
int bitpos, int bitsize,
struct value *newvalue);
-extern struct internalvar *lookup_only_internalvar (char *name);
+extern struct internalvar *lookup_only_internalvar (const char *name);
+
+extern struct internalvar *create_internalvar (const char *name);
-extern struct internalvar *create_internalvar (char *name);
+typedef struct value * (*internalvar_make_value) (struct internalvar *);
-extern struct internalvar *lookup_internalvar (char *name);
+extern struct internalvar *
+ create_internalvar_type_lazy (char *name, internalvar_make_value fun);
+
+extern struct internalvar *lookup_internalvar (const char *name);
extern int value_equal (struct value *arg1, struct value *arg2);
const struct value_print_options *options,
const struct language_defn *language);
-extern int val_print_string (CORE_ADDR addr, int len, int width,
+extern int val_print_string (struct type *elttype, CORE_ADDR addr, int len,
struct ui_file *stream,
const struct value_print_options *options);
extern struct value *value_of_local (const char *name, int complain);
extern struct value * value_subscripted_rvalue (struct value *array, struct value *idx, int lowerbound);
+
+/* User function handler. */
+
+typedef struct value *(*internal_function_fn) (void *cookie,
+ int argc,
+ struct value **argv);
+
+void add_internal_function (const char *name, const char *doc,
+ internal_function_fn handler,
+ void *cookie);
+
+struct value *call_internal_function (struct value *function,
+ int argc, struct value **argv);
+
+char *value_internal_function_name (struct value *);
+
#endif /* !defined (VALUE_H) */
projects / deliverable / binutils-gdb.git / blobdiff