mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-28 20:43:45 +08:00
136 lines
3.8 KiB
C
136 lines
3.8 KiB
C
/* Definitions for values of C expressions, for GDB.
|
||
Copyright (C) 1986, 1987 Free Software Foundation, Inc.
|
||
|
||
GDB is distributed in the hope that it will be useful, but WITHOUT ANY
|
||
WARRANTY. No author or distributor accepts responsibility to anyone
|
||
for the consequences of using it or for whether it serves any
|
||
particular purpose or works at all, unless he says so in writing.
|
||
Refer to the GDB General Public License for full details.
|
||
|
||
Everyone is granted permission to copy, modify and redistribute GDB,
|
||
but only under the conditions described in the GDB General Public
|
||
License. A copy of this license is supposed to have been given to you
|
||
along with GDB so you can know your rights and responsibilities. It
|
||
should be in a file named COPYING. Among other things, the copyright
|
||
notice and this notice must be preserved on all copies.
|
||
|
||
In other words, go ahead and share GDB, but don't try to stop
|
||
anyone else from sharing it farther. Help stamp out software hoarding!
|
||
*/
|
||
|
||
enum lval_type { not_lval, lval_memory, lval_register, lval_internalvar,
|
||
lval_internalvar_component };
|
||
|
||
struct value
|
||
{
|
||
enum lval_type lval;
|
||
union
|
||
{
|
||
CORE_ADDR address;
|
||
struct internalvar *internalvar;
|
||
} location;
|
||
int offset;
|
||
int bitsize;
|
||
int bitpos;
|
||
struct type *type;
|
||
struct value *next;
|
||
short repeated;
|
||
short repetitions;
|
||
short regno;
|
||
long contents[1];
|
||
};
|
||
|
||
typedef struct value *value;
|
||
|
||
#define VALUE_TYPE(val) (val)->type
|
||
#define VALUE_CONTENTS(val) ((char *) (val)->contents)
|
||
#define VALUE_LVAL(val) (val)->lval
|
||
#define VALUE_ADDRESS(val) (val)->location.address
|
||
#define VALUE_INTERNALVAR(val) (val)->location.internalvar
|
||
#define VALUE_OFFSET(val) (val)->offset
|
||
#define VALUE_BITSIZE(val) (val)->bitsize
|
||
#define VALUE_BITPOS(val) (val)->bitpos
|
||
#define VALUE_NEXT(val) (val)->next
|
||
#define VALUE_REPEATED(val) (val)->repeated
|
||
#define VALUE_REPETITIONS(val) (val)->repetitions
|
||
#define VALUE_REGNO(val) (val)->regno
|
||
|
||
/* If ARG is an array, convert it to a pointer.
|
||
If ARG is an enum, convert it to an integer. */
|
||
|
||
#define COERCE_ARRAY(arg) \
|
||
{ if (VALUE_REPEATED (arg) \
|
||
|| TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ARRAY) \
|
||
arg = value_coerce_array (arg); \
|
||
if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ENUM) \
|
||
arg = value_cast (builtin_type_unsigned_int, arg); \
|
||
}
|
||
|
||
/* If ARG is an enum, convert it to an integer. */
|
||
|
||
#define COERCE_ENUM(arg) \
|
||
{ if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ENUM) \
|
||
arg = value_cast (builtin_type_unsigned_int, arg); \
|
||
}
|
||
|
||
/* Internal variables (variables for convenience of use of debugger)
|
||
are recorded as a chain of these structures. */
|
||
|
||
struct internalvar
|
||
{
|
||
struct internalvar *next;
|
||
char *name;
|
||
value value;
|
||
};
|
||
|
||
long value_as_long ();
|
||
double value_as_double ();
|
||
long unpack_long ();
|
||
double unpack_double ();
|
||
long unpack_field_as_long ();
|
||
value value_from_long ();
|
||
value value_from_double ();
|
||
value value_at ();
|
||
value value_of_variable ();
|
||
value value_of_register ();
|
||
value read_var_value ();
|
||
value locate_var_value ();
|
||
value allocate_value ();
|
||
value allocate_repeat_value ();
|
||
value value_string ();
|
||
|
||
value value_binop ();
|
||
value value_add ();
|
||
value value_sub ();
|
||
value value_coerce_array ();
|
||
value value_ind ();
|
||
value value_addr ();
|
||
value value_assign ();
|
||
value value_neg ();
|
||
value value_lognot ();
|
||
value value_struct_elt (), value_struct_elt_for_address ();
|
||
value value_field ();
|
||
value value_cast ();
|
||
value value_repeat ();
|
||
value value_subscript ();
|
||
|
||
value call_function ();
|
||
value value_being_returned ();
|
||
|
||
value evaluate_expression ();
|
||
value evaluate_type ();
|
||
value parse_and_eval ();
|
||
value parse_to_comma_and_eval ();
|
||
|
||
value access_value_history ();
|
||
value value_of_internalvar ();
|
||
struct internalvar *lookup_internalvar ();
|
||
|
||
int value_equal ();
|
||
int value_less ();
|
||
int value_zerop ();
|
||
|
||
/* C++ */
|
||
value value_of_this ();
|
||
value value_static_field ();
|