Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
- 2008 Free Software Foundation, Inc.
+ 2008, 2009 Free Software Foundation, Inc.
This file is part of GDB.
struct value;
-/* Needed if another module needs to maintain its own list of values. */
-
-void value_prepend_to_list (struct value **head, struct value *val);
-void value_remove_from_list (struct value **head, struct value *val);
-
/* Values are stored in a chain, so that they can be deleted easily
over calls to the inferior. Values assigned to internal variables,
put into the value history or exposed to Python are taken off this
extern int value_bitpos (struct value *);
extern void set_value_bitpos (struct value *, int bit);
+/* Only used for bitfields; the containing value. This allows a
+ single read from the target when displaying multiple
+ bitfields. */
+
+struct value *value_parent (struct value *);
+
/* Describes offset of a value within lval of a structure in bytes.
If lval == lval_memory, this is an offset to the address. If lval
== lval_register, this is a further offset from location.address
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 int value_lazy (struct value *);
extern void set_value_lazy (struct value *value, int val);
+extern int value_stack (struct value *);
+extern void set_value_stack (struct value *value, int val);
+
/* value_contents() and value_contents_raw() both return the address
of the gdb buffer used to hold a copy of the contents of the lval.
value_contents() is used when the contents of the buffer are needed
extern int value_initialized (struct value *);
extern void set_value_initialized (struct value *, int);
+/* Set COMPONENT's location as appropriate for a component of WHOLE
+ --- regardless of what kind of lvalue WHOLE is. */
+extern void set_value_component_location (struct value *component,
+ struct value *whole);
+
/* While the following fields are per- VALUE .CONTENT .PIECE (i.e., a
single value might have multiple LVALs), this hacked interface is
limited to just the first PIECE. Expect further change. */
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"
struct frame_info;
struct fn_field;
-extern void print_address_demangle (CORE_ADDR, struct ui_file *, int);
+extern void print_address_demangle (struct gdbarch *, CORE_ADDR,
+ struct ui_file *, int);
extern LONGEST value_as_long (struct value *val);
extern DOUBLEST value_as_double (struct value *val);
extern DOUBLEST unpack_double (struct type *type, const gdb_byte *valaddr,
int *invp);
extern CORE_ADDR unpack_pointer (struct type *type, const gdb_byte *valaddr);
+LONGEST unpack_bits_as_long (struct type *field_type, const gdb_byte *valaddr,
+ int bitpos, int bitsize);
extern LONGEST unpack_field_as_long (struct type *type,
const gdb_byte *valaddr,
int fieldno);
extern struct value *value_from_double (struct type *type, DOUBLEST num);
extern struct value *value_from_decfloat (struct type *type,
const gdb_byte *decbytes);
-extern struct value *value_from_string (char *string);
extern struct value *value_at (struct type *type, CORE_ADDR addr);
extern struct value *value_at_lazy (struct type *type, CORE_ADDR addr);
extern struct value *value_of_variable (struct symbol *var, struct block *b);
+extern struct value *address_of_variable (struct symbol *var, struct block *b);
+
extern struct value *value_of_register (int regnum, struct frame_info *frame);
struct value *value_of_register_lazy (struct frame_info *frame, int regnum);
extern struct value *read_var_value (struct symbol *var,
struct frame_info *frame);
-extern struct value *locate_var_value (struct symbol *var,
- struct frame_info *frame);
-
extern struct value *allocate_value (struct type *type);
extern struct value *allocate_value_lazy (struct type *type);
extern void allocate_value_contents (struct value *value);
extern void value_free_to_mark (struct value *mark);
-extern struct value *value_string (char *ptr, int len);
-extern struct value *value_bitstring (char *ptr, int len);
+extern struct value *value_cstring (char *ptr, int len,
+ struct type *char_type);
+extern struct value *value_string (char *ptr, int len,
+ struct type *char_type);
+extern struct value *value_bitstring (char *ptr, int len,
+ struct type *index_type);
extern struct value *value_array (int lowbound, int highbound,
struct value **elemvec);
extern struct value *value_binop (struct value *arg1, struct value *arg2,
enum exp_opcode op);
-extern struct value *value_ptradd (struct value *arg1, struct value *arg2);
-
-extern struct value *value_ptrsub (struct value *arg1, struct value *arg2);
+extern struct value *value_ptradd (struct value *arg1, LONGEST arg2);
extern LONGEST value_ptrdiff (struct value *arg1, struct value *arg2);
extern struct value *value_aggregate_elt (struct type *curtype,
char *name,
+ struct type *expect_type,
int want_address,
enum noside noside);
extern struct value *value_repeat (struct value *arg1, int count);
-extern struct value *value_subscript (struct value *array, struct value *idx);
+extern struct value *value_subscript (struct value *array, LONGEST index);
extern struct value *value_bitstring_subscript (struct type *type,
struct value *bitstring,
- struct value *idx);
+ LONGEST index);
extern struct value *register_value_being_returned (struct type *valtype,
struct regcache *retbuf);
extern int value_bit_index (struct type *type, const gdb_byte *addr,
int index);
-extern int using_struct_return (struct type *func_type,
+extern int using_struct_return (struct gdbarch *gdbarch,
+ struct type *func_type,
struct type *value_type);
extern struct value *evaluate_expression (struct expression *exp);
extern struct value *evaluate_type (struct expression *exp);
+extern struct value *evaluate_subexp (struct type *expect_type,
+ struct expression *exp,
+ int *pos, enum noside noside);
+
extern struct value *evaluate_subexpression_type (struct expression *exp,
int subexp);
extern struct value *access_value_history (int num);
-extern struct value *value_of_internalvar (struct internalvar *var);
+extern struct value *value_of_internalvar (struct gdbarch *gdbarch,
+ 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 set_internalvar_string (struct internalvar *var,
+ const char *string);
+
+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 (char *name);
+extern struct internalvar *create_internalvar (const char *name);
-extern struct internalvar *lookup_internalvar (char *name);
+typedef struct value * (*internalvar_make_value) (struct gdbarch *,
+ struct internalvar *);
+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);
extern int destructor_name_p (const char *name, const struct type *type);
+extern void value_incref (struct value *val);
+
extern void value_free (struct value *val);
extern void free_all_values (void);
extern int record_latest_value (struct value *val);
-extern void modify_field (gdb_byte *addr, LONGEST fieldval, int bitpos,
- int bitsize);
+extern void modify_field (struct type *type, gdb_byte *addr,
+ LONGEST fieldval, int bitpos, int bitsize);
extern void type_print (struct type *type, char *varstring,
struct ui_file *stream, int show);
+extern char *type_to_string (struct type *type);
+
extern gdb_byte *baseclass_addr (struct type *type, int index,
gdb_byte *valaddr,
struct value **valuep, int *errp);
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 void print_variable_value (struct symbol *var,
- struct frame_info *frame,
- struct ui_file *stream);
+extern void print_variable_and_value (const char *name,
+ struct symbol *var,
+ struct frame_info *frame,
+ struct ui_file *stream,
+ int indent);
extern int check_field (struct type *, const char *);
extern struct value *value_copy (struct value *);
+extern void preserve_one_value (struct value *, struct objfile *, htab_t);
+
/* From valops.c */
extern struct value *varying_to_slice (struct value *);
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);
+extern struct value *value_subscripted_rvalue (struct value *array,
+ LONGEST index, int lowerbound);
+
+/* User function handler. */
+
+typedef struct value *(*internal_function_fn) (struct gdbarch *gdbarch,
+ const struct language_defn *language,
+ 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 gdbarch *gdbarch,
+ const struct language_defn *language,
+ struct value *function,
+ int argc, struct value **argv);
+
+char *value_internal_function_name (struct value *);
+
#endif /* !defined (VALUE_H) */
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