/* Definitions for values of C expressions, for GDB.
- Copyright 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996
- Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1989, 1992-1996, 2000 Free Software Foundation, Inc.
This file is part of GDB.
/* Location of value (if lval). */
union
{
- /* Address in inferior or byte of registers structure. */
+ /* If lval == lval_memory, this is the address in the inferior.
+ If lval == lval_register, this is the byte offset into the
+ registers structure. */
CORE_ADDR address;
/* Pointer to internal variable. */
struct internalvar *internalvar;
}
location;
/* Describes offset of a value within lval of a structure in bytes.
- This is used in retrieving contents from target memory. [Note also
- the member embedded_offset below.] */
+ If lval == lval_memory, this is an offset to the address.
+ If lval == lval_register, this is a further offset from
+ location.address within the registers structure.
+ Note also the member embedded_offset below. */
int offset;
/* Only used for bitfields; number of bits contained in them. */
int bitsize;
/* If zero, contents of this value are in the contents field.
If nonzero, contents are in inferior memory at address
in the location.address field plus the offset field
- (and the lval field should be lval_memory). */
+ (and the lval field should be lval_memory).
+
+ WARNING: This field is used by the code which handles
+ watchpoints (see breakpoint.c) to decide whether a particular
+ value can be watched by hardware watchpoints. If the lazy flag
+ is set for some member of a value chain, it is assumed that
+ this member of the chain doesn't need to be watched as part of
+ watching the value itself. This is how GDB avoids watching the
+ entire struct or array when the user wants to watch a single
+ struct member or array element. If you ever change the way
+ lazy flag is set and reset, be sure to consider this use as
+ well! */
char lazy;
/* If nonzero, this is the value of a variable which does not
actually exist in the program. */
VALUE_CONTENTS_ALL_RAW(val))
-extern int value_fetch_lazy PARAMS ((value_ptr val));
+extern int value_fetch_lazy (value_ptr val);
#define VALUE_LVAL(val) (val)->lval
#define VALUE_ADDRESS(val) (val)->location.address
do { struct type *value_type_arg_tmp = check_typedef (VALUE_TYPE (arg));\
if (TYPE_CODE (value_type_arg_tmp) == TYPE_CODE_REF) \
arg = value_at_lazy (TYPE_TARGET_TYPE (value_type_arg_tmp), \
- unpack_long (VALUE_TYPE (arg), \
- VALUE_CONTENTS (arg)), \
+ unpack_pointer (VALUE_TYPE (arg), \
+ VALUE_CONTENTS (arg)), \
VALUE_BFD_SECTION (arg)); \
} while (0)
struct frame_info;
struct fn_field;
-extern void
-print_address_demangle PARAMS ((CORE_ADDR, GDB_FILE *, int));
+extern void print_address_demangle (CORE_ADDR, struct ui_file *, int);
+
+extern LONGEST value_as_long (value_ptr val);
+
+extern DOUBLEST value_as_double (value_ptr val);
-extern LONGEST value_as_long PARAMS ((value_ptr val));
+extern CORE_ADDR value_as_pointer (value_ptr val);
-extern DOUBLEST value_as_double PARAMS ((value_ptr val));
+extern LONGEST unpack_long (struct type *type, char *valaddr);
-extern CORE_ADDR value_as_pointer PARAMS ((value_ptr val));
+extern DOUBLEST unpack_double (struct type *type, char *valaddr, int *invp);
-extern LONGEST unpack_long PARAMS ((struct type * type, char *valaddr));
+extern CORE_ADDR unpack_pointer (struct type *type, char *valaddr);
-extern DOUBLEST unpack_double PARAMS ((struct type * type, char *valaddr,
- int *invp));
+extern LONGEST unpack_field_as_long (struct type *type, char *valaddr,
+ int fieldno);
-extern CORE_ADDR unpack_pointer PARAMS ((struct type * type, char *valaddr));
+extern value_ptr value_from_longest (struct type *type, LONGEST num);
-extern LONGEST unpack_field_as_long PARAMS ((struct type * type, char *valaddr,
- int fieldno));
+extern value_ptr value_from_pointer (struct type *type, CORE_ADDR addr);
-extern value_ptr value_from_longest PARAMS ((struct type * type, LONGEST num));
+extern value_ptr value_from_double (struct type *type, DOUBLEST num);
-extern value_ptr value_from_double PARAMS ((struct type * type, DOUBLEST num));
+extern value_ptr value_from_string (char *string);
-extern value_ptr value_from_string PARAMS ((char *string));
+extern value_ptr value_at (struct type *type, CORE_ADDR addr,
+ asection * sect);
-extern value_ptr value_at PARAMS ((struct type * type, CORE_ADDR addr, asection * sect));
+extern value_ptr value_at_lazy (struct type *type, CORE_ADDR addr,
+ asection * sect);
-extern value_ptr value_at_lazy PARAMS ((struct type * type, CORE_ADDR addr, asection * sect));
+extern value_ptr value_from_register (struct type *type, int regnum,
+ struct frame_info *frame);
-extern value_ptr value_from_register PARAMS ((struct type * type, int regnum,
- struct frame_info * frame));
+extern value_ptr value_of_variable (struct symbol *var, struct block *b);
-extern value_ptr value_of_variable PARAMS ((struct symbol * var,
- struct block * b));
+extern value_ptr value_of_register (int regnum);
-extern value_ptr value_of_register PARAMS ((int regnum));
+extern int symbol_read_needs_frame (struct symbol *);
-extern int symbol_read_needs_frame PARAMS ((struct symbol *));
+extern value_ptr read_var_value (struct symbol *var,
+ struct frame_info *frame);
-extern value_ptr read_var_value PARAMS ((struct symbol * var,
- struct frame_info * frame));
+extern value_ptr locate_var_value (struct symbol *var,
+ struct frame_info *frame);
-extern value_ptr locate_var_value PARAMS ((struct symbol * var,
- struct frame_info * frame));
+extern value_ptr allocate_value (struct type *type);
-extern value_ptr allocate_value PARAMS ((struct type * type));
+extern value_ptr allocate_repeat_value (struct type *type, int count);
-extern value_ptr allocate_repeat_value PARAMS ((struct type * type, int count));
+extern value_ptr value_mark (void);
-extern value_ptr value_mark PARAMS ((void));
+extern void value_free_to_mark (value_ptr mark);
-extern void value_free_to_mark PARAMS ((value_ptr mark));
+extern value_ptr value_string (char *ptr, int len);
+extern value_ptr value_bitstring (char *ptr, int len);
-extern value_ptr value_string PARAMS ((char *ptr, int len));
-extern value_ptr value_bitstring PARAMS ((char *ptr, int len));
+extern value_ptr value_array (int lowbound, int highbound,
+ value_ptr * elemvec);
-extern value_ptr value_array PARAMS ((int lowbound, int highbound,
- value_ptr * elemvec));
+extern value_ptr value_concat (value_ptr arg1, value_ptr arg2);
-extern value_ptr value_concat PARAMS ((value_ptr arg1, value_ptr arg2));
+extern value_ptr value_binop (value_ptr arg1, value_ptr arg2,
+ enum exp_opcode op);
-extern value_ptr value_binop PARAMS ((value_ptr arg1, value_ptr arg2,
- enum exp_opcode op));
+extern value_ptr value_add (value_ptr arg1, value_ptr arg2);
-extern value_ptr value_add PARAMS ((value_ptr arg1, value_ptr arg2));
+extern value_ptr value_sub (value_ptr arg1, value_ptr arg2);
-extern value_ptr value_sub PARAMS ((value_ptr arg1, value_ptr arg2));
+extern value_ptr value_coerce_array (value_ptr arg1);
-extern value_ptr value_coerce_array PARAMS ((value_ptr arg1));
+extern value_ptr value_coerce_function (value_ptr arg1);
-extern value_ptr value_coerce_function PARAMS ((value_ptr arg1));
+extern value_ptr value_ind (value_ptr arg1);
-extern value_ptr value_ind PARAMS ((value_ptr arg1));
+extern value_ptr value_addr (value_ptr arg1);
-extern value_ptr value_addr PARAMS ((value_ptr arg1));
+extern value_ptr value_assign (value_ptr toval, value_ptr fromval);
-extern value_ptr value_assign PARAMS ((value_ptr toval, value_ptr fromval));
+extern value_ptr value_neg (value_ptr arg1);
-extern value_ptr value_neg PARAMS ((value_ptr arg1));
+extern value_ptr value_complement (value_ptr arg1);
-extern value_ptr value_complement PARAMS ((value_ptr arg1));
+extern value_ptr value_struct_elt (value_ptr * argp, value_ptr * args,
+ char *name,
+ int *static_memfuncp, char *err);
-extern value_ptr value_struct_elt PARAMS ((value_ptr * argp, value_ptr * args,
- char *name,
- int *static_memfuncp, char *err));
+extern value_ptr value_struct_elt_for_reference (struct type *domain,
+ int offset,
+ struct type *curtype,
+ char *name,
+ struct type *intype);
-extern value_ptr value_struct_elt_for_reference PARAMS ((struct type * domain,
- int offset,
- struct type * curtype,
- char *name,
- struct type * intype));
+extern value_ptr value_static_field (struct type *type, int fieldno);
-extern value_ptr value_static_field PARAMS ((struct type * type, int fieldno));
+extern struct fn_field *value_find_oload_method_list (value_ptr *, char *,
+ int, int *, int *,
+ struct type **, int *);
-extern struct fn_field *value_find_oload_method_list PARAMS ((value_ptr *, char *, int, int *, int *, struct type **, int *));
+extern int find_overload_match (struct type **arg_types, int nargs,
+ char *name, int method, int lax,
+ value_ptr obj, struct symbol *fsym,
+ value_ptr * valp, struct symbol **symp,
+ int *staticp);
-extern int find_overload_match PARAMS ((struct type ** arg_types, int nargs, char *name, int method, int lax, value_ptr obj, struct symbol * fsym, value_ptr * valp, struct symbol ** symp, int *staticp));
+extern value_ptr value_field (value_ptr arg1, int fieldno);
-extern value_ptr value_field PARAMS ((value_ptr arg1, int fieldno));
+extern value_ptr value_primitive_field (value_ptr arg1, int offset,
+ int fieldno, struct type *arg_type);
-extern value_ptr value_primitive_field PARAMS ((value_ptr arg1, int offset,
- int fieldno,
- struct type * arg_type));
+extern struct type *value_rtti_type (value_ptr, int *, int *, int *);
-extern struct type *
- value_rtti_type PARAMS ((value_ptr, int *, int *, int *));
+extern struct type *value_rtti_target_type (value_ptr, int *, int *, int *);
-extern struct type *
- value_rtti_target_type PARAMS ((value_ptr, int *, int *, int *));
+extern value_ptr value_full_object (value_ptr, struct type *, int, int, int);
-extern value_ptr
- value_full_object PARAMS ((value_ptr, struct type *, int, int, int));
+extern value_ptr value_cast (struct type *type, value_ptr arg2);
-extern value_ptr value_cast PARAMS ((struct type * type, value_ptr arg2));
+extern value_ptr value_zero (struct type *type, enum lval_type lv);
-extern value_ptr value_zero PARAMS ((struct type * type, enum lval_type lv));
+extern value_ptr value_repeat (value_ptr arg1, int count);
-extern value_ptr value_repeat PARAMS ((value_ptr arg1, int count));
+extern value_ptr value_subscript (value_ptr array, value_ptr idx);
-extern value_ptr value_subscript PARAMS ((value_ptr array, value_ptr idx));
+extern value_ptr value_from_vtable_info (value_ptr arg, struct type *type);
-extern value_ptr value_from_vtable_info PARAMS ((value_ptr arg,
- struct type * type));
+extern value_ptr value_being_returned (struct type *valtype,
+ char *retbuf, int struct_return);
-extern value_ptr value_being_returned PARAMS ((struct type * valtype,
- char *retbuf,
- int struct_return));
+extern value_ptr value_in (value_ptr element, value_ptr set);
-extern value_ptr value_in PARAMS ((value_ptr element, value_ptr set));
+extern int value_bit_index (struct type *type, char *addr, int index);
-extern int value_bit_index PARAMS ((struct type * type, char *addr, int index));
+extern int using_struct_return (value_ptr function, CORE_ADDR funcaddr,
+ struct type *value_type, int gcc_p);
-extern int using_struct_return PARAMS ((value_ptr function, CORE_ADDR funcaddr,
- struct type * value_type, int gcc_p));
+extern void set_return_value (value_ptr val);
-extern void set_return_value PARAMS ((value_ptr val));
+extern value_ptr evaluate_expression (struct expression *exp);
-extern value_ptr evaluate_expression PARAMS ((struct expression * exp));
+extern value_ptr evaluate_type (struct expression *exp);
-extern value_ptr evaluate_type PARAMS ((struct expression * exp));
+extern value_ptr evaluate_subexp_with_coercion (struct expression *,
+ int *, enum noside);
-extern value_ptr evaluate_subexp_with_coercion PARAMS ((struct expression *,
- int *, enum noside));
+extern value_ptr parse_and_eval (char *exp);
-extern value_ptr parse_and_eval PARAMS ((char *exp));
+extern value_ptr parse_to_comma_and_eval (char **expp);
-extern value_ptr parse_to_comma_and_eval PARAMS ((char **expp));
+extern struct type *parse_and_eval_type (char *p, int length);
-extern struct type *parse_and_eval_type PARAMS ((char *p, int length));
+extern CORE_ADDR parse_and_eval_address (char *exp);
-extern CORE_ADDR parse_and_eval_address PARAMS ((char *exp));
+extern CORE_ADDR parse_and_eval_address_1 (char **expptr);
-extern CORE_ADDR parse_and_eval_address_1 PARAMS ((char **expptr));
+extern LONGEST parse_and_eval_long (char *exp);
-extern value_ptr access_value_history PARAMS ((int num));
+extern value_ptr access_value_history (int num);
-extern value_ptr value_of_internalvar PARAMS ((struct internalvar * var));
+extern value_ptr value_of_internalvar (struct internalvar *var);
-extern void set_internalvar PARAMS ((struct internalvar * var, value_ptr val));
+extern void set_internalvar (struct internalvar *var, value_ptr val);
-extern void set_internalvar_component PARAMS ((struct internalvar * var,
- int offset,
- int bitpos, int bitsize,
- value_ptr newvalue));
+extern void set_internalvar_component (struct internalvar *var,
+ int offset,
+ int bitpos, int bitsize,
+ value_ptr newvalue);
-extern struct internalvar *lookup_internalvar PARAMS ((char *name));
+extern struct internalvar *lookup_internalvar (char *name);
-extern int value_equal PARAMS ((value_ptr arg1, value_ptr arg2));
+extern int value_equal (value_ptr arg1, value_ptr arg2);
-extern int value_less PARAMS ((value_ptr arg1, value_ptr arg2));
+extern int value_less (value_ptr arg1, value_ptr arg2);
-extern int value_logical_not PARAMS ((value_ptr arg1));
+extern int value_logical_not (value_ptr arg1);
/* C++ */
-extern value_ptr value_of_this PARAMS ((int complain));
+extern value_ptr value_of_this (int complain);
-extern value_ptr value_x_binop PARAMS ((value_ptr arg1, value_ptr arg2,
- enum exp_opcode op,
- enum exp_opcode otherop,
- enum noside noside));
+extern value_ptr value_x_binop (value_ptr arg1, value_ptr arg2,
+ enum exp_opcode op,
+ enum exp_opcode otherop, enum noside noside);
-extern value_ptr value_x_unop PARAMS ((value_ptr arg1, enum exp_opcode op,
- enum noside noside));
+extern value_ptr value_x_unop (value_ptr arg1, enum exp_opcode op,
+ enum noside noside);
-extern value_ptr value_fn_field PARAMS ((value_ptr * arg1p, struct fn_field * f,
- int j,
- struct type * type, int offset));
+extern value_ptr value_fn_field (value_ptr * arg1p, struct fn_field *f,
+ int j, struct type *type, int offset);
-extern value_ptr value_virtual_fn_field PARAMS ((value_ptr * arg1p,
- struct fn_field * f, int j,
- struct type * type,
- int offset));
+extern value_ptr value_virtual_fn_field (value_ptr * arg1p,
+ struct fn_field *f, int j,
+ struct type *type, int offset);
-extern int binop_user_defined_p PARAMS ((enum exp_opcode op,
- value_ptr arg1, value_ptr arg2));
+extern int binop_user_defined_p (enum exp_opcode op,
+ value_ptr arg1, value_ptr arg2);
-extern int unop_user_defined_p PARAMS ((enum exp_opcode op, value_ptr arg1));
+extern int unop_user_defined_p (enum exp_opcode op, value_ptr arg1);
-extern int destructor_name_p PARAMS ((const char *name,
- const struct type * type));
+extern int destructor_name_p (const char *name, const struct type *type);
#define value_free(val) free ((PTR)val)
-extern void free_all_values PARAMS ((void));
+extern void free_all_values (void);
-extern void release_value PARAMS ((value_ptr val));
+extern void release_value (value_ptr val);
-extern int record_latest_value PARAMS ((value_ptr val));
+extern int record_latest_value (value_ptr val);
-extern void registers_changed PARAMS ((void));
+extern void registers_changed (void);
-extern void read_register_bytes PARAMS ((int regbyte, char *myaddr, int len));
+extern void read_register_bytes (int regbyte, char *myaddr, int len);
-extern void write_register_bytes PARAMS ((int regbyte, char *myaddr, int len));
+extern void write_register_bytes (int regbyte, char *myaddr, int len);
-extern void
-read_register_gen PARAMS ((int regno, char *myaddr));
+extern void read_register_gen (int regnum, char *myaddr);
-extern CORE_ADDR
- read_register PARAMS ((int regno));
+extern void write_register_gen (int regnum, char *myaddr);
-extern CORE_ADDR
- read_register_pid PARAMS ((int regno, int pid));
+/* Rename to read_unsigned_register()? */
+extern ULONGEST read_register (int regnum);
-extern void
-write_register PARAMS ((int regno, LONGEST val));
+extern LONGEST read_signed_register (int regnum);
-extern void
-write_register_pid PARAMS ((int regno, CORE_ADDR val, int pid));
+/* Rename to read_unsigned_register_pid()? */
+extern ULONGEST read_register_pid (int regnum, int pid);
-extern void
-supply_register PARAMS ((int regno, char *val));
+extern LONGEST read_signed_register_pid (int regnum, int pid);
-extern void get_saved_register PARAMS ((char *raw_buffer, int *optimized,
- CORE_ADDR * addrp,
- struct frame_info * frame,
- int regnum, enum lval_type * lval));
+extern void write_register (int regnum, LONGEST val);
-extern void
-modify_field PARAMS ((char *addr, LONGEST fieldval, int bitpos, int bitsize));
+extern void write_register_pid (int regnum, CORE_ADDR val, int pid);
-extern void
-type_print PARAMS ((struct type * type, char *varstring, GDB_FILE * stream,
- int show));
+extern void supply_register (int regnum, char *val);
-extern char *baseclass_addr PARAMS ((struct type * type, int index,
- char *valaddr,
- value_ptr * valuep, int *errp));
+extern int register_cached (int regnum);
-extern void
-print_longest PARAMS ((GDB_FILE * stream, int format, int use_local,
- LONGEST val));
+extern void set_register_cached (int regnum, int state);
-extern void
-print_floating PARAMS ((char *valaddr, struct type * type, GDB_FILE * stream));
+extern void register_changed (int regnum);
+
+extern char *register_buffer (int regnum);
-extern int value_print PARAMS ((value_ptr val, GDB_FILE * stream, int format,
- enum val_prettyprint pretty));
+extern void get_saved_register (char *raw_buffer, int *optimized,
+ CORE_ADDR * addrp,
+ struct frame_info *frame,
+ int regnum, enum lval_type *lval);
extern void
-value_print_array_elements PARAMS ((value_ptr val, GDB_FILE * stream,
- int format, enum val_prettyprint pretty));
+modify_field (char *addr, LONGEST fieldval, int bitpos, int bitsize);
-extern value_ptr
- value_release_to_mark PARAMS ((value_ptr mark));
+extern void type_print (struct type * type, char *varstring,
+ struct ui_file * stream, int show);
-extern int
-val_print PARAMS ((struct type * type, char *valaddr, int embedded_offset, CORE_ADDR address,
- GDB_FILE * stream, int format, int deref_ref,
- int recurse, enum val_prettyprint pretty));
+extern char *baseclass_addr (struct type *type, int index,
+ char *valaddr, value_ptr * valuep, int *errp);
-extern int
-val_print_string PARAMS ((CORE_ADDR addr, int len, int width, GDB_FILE * stream));
+extern void print_longest (struct ui_file * stream, int format,
+ int use_local, LONGEST val);
-extern void
-print_variable_value PARAMS ((struct symbol * var, struct frame_info * frame,
- GDB_FILE * stream));
+extern void print_floating (char *valaddr, struct type * type,
+ struct ui_file * stream);
-extern int check_field PARAMS ((value_ptr, const char *));
+extern int value_print (value_ptr val, struct ui_file *stream, int format,
+ enum val_prettyprint pretty);
-extern void
-c_typedef_print PARAMS ((struct type * type, struct symbol * news, GDB_FILE * stream));
+extern void value_print_array_elements (value_ptr val,
+ struct ui_file *stream,
+ int format,
+ enum val_prettyprint pretty);
-extern char *
- internalvar_name PARAMS ((struct internalvar * var));
+extern value_ptr value_release_to_mark (value_ptr mark);
-extern void
-clear_value_history PARAMS ((void));
+extern int val_print (struct type * type, char *valaddr,
+ int embedded_offset, CORE_ADDR address,
+ struct ui_file * stream, int format,
+ int deref_ref, int recurse,
+ enum val_prettyprint pretty);
-extern void
-clear_internalvars PARAMS ((void));
+extern int val_print_string (CORE_ADDR addr, int len, int width, struct ui_file *stream);
+
+extern void print_variable_value (struct symbol * var,
+ struct frame_info * frame,
+ struct ui_file *stream);
+
+extern int check_field (value_ptr, const char *);
+
+extern void typedef_print (struct type * type, struct symbol * news,
+ struct ui_file * stream);
+
+extern char *internalvar_name (struct internalvar *var);
+
+extern void clear_value_history (void);
+
+extern void clear_internalvars (void);
/* From values.c */
-extern value_ptr value_copy PARAMS ((value_ptr));
+extern value_ptr value_copy (value_ptr);
-extern int baseclass_offset PARAMS ((struct type *, int, char *, CORE_ADDR));
+extern int baseclass_offset (struct type *, int, char *, CORE_ADDR);
/* From valops.c */
-extern value_ptr varying_to_slice PARAMS ((value_ptr));
+extern value_ptr varying_to_slice (value_ptr);
+
+extern value_ptr value_slice (value_ptr, int, int);
+
+extern value_ptr call_function_by_hand (value_ptr, int, value_ptr *);
-extern value_ptr value_slice PARAMS ((value_ptr, int, int));
+extern int default_coerce_float_to_double (struct type *, struct type *);
-extern value_ptr call_function_by_hand PARAMS ((value_ptr, int, value_ptr *));
+extern int standard_coerce_float_to_double (struct type *, struct type *);
-extern value_ptr value_literal_complex PARAMS ((value_ptr, value_ptr, struct type *));
+extern value_ptr value_literal_complex (value_ptr, value_ptr, struct type *);
-extern void find_rt_vbase_offset PARAMS ((struct type *, struct type *, char *, int, int *, int *));
+extern void find_rt_vbase_offset (struct type *, struct type *, char *, int,
+ int *, int *);
-extern value_ptr find_function_in_inferior PARAMS ((char *));
+extern value_ptr find_function_in_inferior (char *);
-extern value_ptr value_allocate_space_in_inferior PARAMS ((int));
+extern value_ptr value_allocate_space_in_inferior (int);
-extern CORE_ADDR default_push_arguments PARAMS ((int nargs, value_ptr * args,
- CORE_ADDR sp,
- int struct_return,
- CORE_ADDR struct_addr));
+extern CORE_ADDR default_push_arguments (int nargs, value_ptr * args,
+ CORE_ADDR sp,
+ int struct_return,
+ CORE_ADDR struct_addr);
#endif /* !defined (VALUE_H) */