/* Definitions for values of C expressions, for GDB.
- Copyright 1986, 1987, 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996
+ Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#if !defined (VALUE_H)
#define VALUE_H 1
lval_reg_frame_relative. */
int regnum;
} location;
- /* Describes offset of a value within lval a structure in bytes. */
+ /* 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.] */
int offset;
/* Only used for bitfields; number of bits contained in them. */
int bitsize;
CORE_ADDR frame_addr;
/* Type of the value. */
struct type *type;
+ /* Type of the enclosing object if this is an embedded subobject.
+ The member embedded_offset gives the real position of the subobject
+ if type is not the same as enclosing_type.
+
+ If the type field is a pointer type, then enclosing_type is
+ a pointer type pointing to the real (enclosing) type of the target
+ object. */
+ struct type *enclosing_type;
/* Values are stored in a chain, so that they can be deleted
easily over calls to the inferior. Values assigned to internal
variables or put into the value history are taken off this
char *myaddr;
} substring_addr;
- /* If an lval is forced to repeat, a new value is created with
- these fields set. The new value is not an lval. */
- short repeated;
- short repetitions;
/* Register number if the value is from a register. Is not kept
if you take a field of a structure that is stored in a
register. Shouldn't it be? */
/* If nonzero, this is the value of a variable which does not
actually exist in the program. */
char optimized_out;
+ /* If this value represents an object that is embedded inside a
+ larger object (e.g., a base subobject in C++), this gives the
+ offset (in bytes) from the start of the contents buffer where
+ the embedded object begins. This is required because some C++
+ runtime implementations lay out objects (especially virtual bases
+ with possibly negative offsets to ancestors).
+ Note: This may be positive or negative! Also note that this offset
+ is not used when retrieving contents from target memory; the entire
+ enclosing object has to be retrieved always, and the offset for
+ that is given by the member offset above. */
+ int embedded_offset;
+ /* If this value represents a pointer to an object that is embedded
+ in another object, this gives the embedded_offset of the object
+ that is pointed to. */
+ int pointed_to_offset;
+ /* The BFD section associated with this value. */
+ asection *bfd_section;
/* Actual contents of the value. For use of this value; setting
it uses the stuff above. Not valid if lazy is nonzero.
Target byte-order. We force it to be aligned properly for any
- possible value. */
+ possible value. Note that a value therefore extends beyond
+ what is declared here. */
union {
long contents[1];
double force_double_align;
LONGEST force_longlong_align;
char *literal_data;
} aligner;
-
+ /* Do not add any new members here -- contents above will trash them */
};
typedef struct value *value_ptr;
#define VALUE_TYPE(val) (val)->type
+#define VALUE_ENCLOSING_TYPE(val) (val)->enclosing_type
#define VALUE_LAZY(val) (val)->lazy
/* 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.
it uses value_fetch_lazy() to load the buffer from the process being
debugged if it hasn't already been loaded. VALUE_CONTENTS_RAW is
used when data is being stored into the buffer, or when it is
- certain that the contents of the buffer are valid. */
-#define VALUE_CONTENTS_RAW(val) ((char *) (val)->aligner.contents)
+ certain that the contents of the buffer are valid.
+ Note: The contents pointer is adjusted by the offset required to
+ get to the real subobject, if the value happens to represent
+ something embedded in a larger run-time object. */
+
+#define VALUE_CONTENTS_RAW(val) ((char *) (val)->aligner.contents + (val)->embedded_offset)
#define VALUE_CONTENTS(val) ((void)(VALUE_LAZY(val) && value_fetch_lazy(val)),\
VALUE_CONTENTS_RAW(val))
+
+/* The ALL variants of the above two macros do not adjust the returned
+ pointer by the embedded_offset value. */
+
+#define VALUE_CONTENTS_ALL_RAW(val) ((char *) (val)->aligner.contents)
+#define VALUE_CONTENTS_ALL(val) ((void) (VALUE_LAZY(val) && value_fetch_lazy(val)),\
+ VALUE_CONTENTS_ALL_RAW(val))
+
+
extern int value_fetch_lazy PARAMS ((value_ptr val));
#define VALUE_LVAL(val) (val)->lval
#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
#define VALUE_OPTIMIZED_OUT(val) ((val)->optimized_out)
-
-/* This is probably not the right thing to do for in-gdb arrays. FIXME */
-/* Overload the contents field to store literal data for
- arrays. */
-
-#define VALUE_LITERAL_DATA(val) ((val)->aligner.literal_data)
-
-/* Pointer to
- the base substring, for F77 string substring operators.
- We use this ONLY when doing operations of the form
-
- FOO= 'hello'
- FOO(2:4) = 'foo'
-
- In the above case VALUE_SUBSTRING_* would point to
- FOO(2) in the original FOO string.
-
- Depending on whether the base object is allocated in the
- inferior or the superior process, use VALUE_SUBSTRING_MYADDR or
- VALUE_SUBSTRING_MEMADDR. */
-
-#define VALUE_SUBSTRING_MEMADDR(val) (val)->substring_addr.memaddr
-#define VALUE_SUBSTRING_MYADDR(val) (val)->substring_addr.myaddr
+#define VALUE_EMBEDDED_OFFSET(val) ((val)->embedded_offset)
+#define VALUE_POINTED_TO_OFFSET(val) ((val)->pointed_to_offset)
+#define VALUE_BFD_SECTION(val) ((val)->bfd_section)
/* Convert a REF to the object referenced. */
#define COERCE_REF(arg) \
-{ if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_REF) \
- arg = value_at_lazy (TYPE_TARGET_TYPE (VALUE_TYPE (arg)), \
- unpack_long (VALUE_TYPE (arg), \
- VALUE_CONTENTS (arg)));}
+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)), \
+ VALUE_BFD_SECTION (arg)); \
+ } while (0)
/* If ARG is an array, convert it to a pointer.
If ARG is an enum, convert it to an integer.
References are dereferenced. */
#define COERCE_ARRAY(arg) \
-{ COERCE_REF(arg); \
- if (VALUE_REPEATED (arg) \
- || TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ARRAY) \
+do { COERCE_REF(arg); \
+ if (current_language->c_style_arrays \
+ && TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ARRAY) \
arg = value_coerce_array (arg); \
if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_FUNC) \
arg = value_coerce_function (arg); \
- if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ENUM) \
- arg = value_cast (builtin_type_unsigned_int, arg); \
-}
+} while (0)
+
+#define COERCE_NUMBER(arg) \
+ do { COERCE_ARRAY(arg); COERCE_ENUM(arg); } while (0)
+
+#define COERCE_VARYING_ARRAY(arg, real_arg_type) \
+{ if (chill_varying_type (real_arg_type)) \
+ arg = varying_to_slice (arg), real_arg_type = VALUE_TYPE (arg); }
/* If ARG is an enum, convert it to an integer. */
-#define COERCE_ENUM(arg) \
-{ COERCE_REF (arg); \
- if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ENUM) \
+#define COERCE_ENUM(arg) { \
+ if (TYPE_CODE (check_typedef (VALUE_TYPE (arg))) == TYPE_CODE_ENUM) \
arg = value_cast (builtin_type_unsigned_int, arg); \
}
extern LONGEST value_as_long PARAMS ((value_ptr val));
-extern double value_as_double PARAMS ((value_ptr val));
+extern DOUBLEST value_as_double PARAMS ((value_ptr val));
extern CORE_ADDR value_as_pointer PARAMS ((value_ptr val));
extern LONGEST unpack_long PARAMS ((struct type *type, char *valaddr));
-extern double unpack_double PARAMS ((struct type *type, char *valaddr,
- int *invp));
+extern DOUBLEST unpack_double PARAMS ((struct type *type, char *valaddr,
+ int *invp));
extern CORE_ADDR unpack_pointer PARAMS ((struct type *type, char *valaddr));
extern value_ptr value_from_longest PARAMS ((struct type *type, LONGEST num));
-extern value_ptr value_from_double PARAMS ((struct type *type, double num));
+extern value_ptr value_from_double PARAMS ((struct type *type, DOUBLEST num));
-extern value_ptr value_at PARAMS ((struct type *type, CORE_ADDR addr));
+extern value_ptr value_at PARAMS ((struct type *type, CORE_ADDR addr, asection *sect));
-extern value_ptr value_at_lazy PARAMS ((struct type *type, CORE_ADDR addr));
+extern value_ptr value_at_lazy PARAMS ((struct type *type, CORE_ADDR addr, asection *sect));
extern value_ptr value_from_register PARAMS ((struct type *type, int regnum,
struct frame_info * frame));
char *name,
struct type *intype));
+extern value_ptr value_static_field PARAMS ((struct type *type, int fieldno));
+
+extern struct fn_field *
+value_find_oload_method_list PARAMS ((value_ptr *, char *, int, int *, int *, struct type **, int *));
+
extern value_ptr value_field PARAMS ((value_ptr arg1, int fieldno));
extern value_ptr value_primitive_field PARAMS ((value_ptr arg1, int offset,
int fieldno,
struct type *arg_type));
+extern struct type *
+value_rtti_type PARAMS ((value_ptr, int *, int *, int *));
+
+extern struct type *
+value_rtti_target_type PARAMS ((value_ptr, int *, int *, int *));
+
+extern value_ptr
+value_full_object PARAMS ((value_ptr, struct type *, int, int, int));
+
extern value_ptr value_cast PARAMS ((struct type *type, value_ptr arg2));
extern value_ptr value_zero PARAMS ((struct type *type, enum lval_type lv));
extern value_ptr evaluate_type PARAMS ((struct expression *exp));
+extern value_ptr evaluate_subexp_with_coercion PARAMS ((struct expression *,
+ int *, enum noside));
+
extern value_ptr parse_and_eval PARAMS ((char *exp));
extern value_ptr parse_to_comma_and_eval PARAMS ((char **expp));
extern value_ptr value_x_binop PARAMS ((value_ptr arg1, value_ptr arg2,
enum exp_opcode op,
- enum exp_opcode otherop));
+ enum exp_opcode otherop,
+ enum noside noside));
-extern value_ptr value_x_unop PARAMS ((value_ptr arg1, enum exp_opcode op));
+extern value_ptr value_x_unop PARAMS ((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,
extern CORE_ADDR
read_register PARAMS ((int regno));
+extern CORE_ADDR
+read_register_pid PARAMS ((int regno, int pid));
+
extern void
write_register PARAMS ((int regno, LONGEST val));
+extern void
+write_register_pid PARAMS ((int regno, LONGEST val, int pid));
+
extern void
supply_register PARAMS ((int regno, char *val));
value_release_to_mark PARAMS ((value_ptr mark));
extern int
-val_print PARAMS ((struct type *type, char *valaddr, CORE_ADDR address,
+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 int
-val_print_string PARAMS ((CORE_ADDR addr, unsigned int len, GDB_FILE *stream));
+val_print_string PARAMS ((CORE_ADDR addr, int len, int width, GDB_FILE *stream));
extern void
print_variable_value PARAMS ((struct symbol *var, struct frame_info *frame,
GDB_FILE *stream));
-extern value_ptr value_arg_coerce PARAMS ((value_ptr));
-
extern int check_field PARAMS ((value_ptr, const char *));
extern void
extern value_ptr value_copy PARAMS ((value_ptr));
-extern int baseclass_offset PARAMS ((struct type *, int, value_ptr, int));
+extern int baseclass_offset PARAMS ((struct type *, int, char *, CORE_ADDR));
/* From valops.c */
+extern value_ptr varying_to_slice PARAMS ((value_ptr));
+
+extern value_ptr value_slice PARAMS ((value_ptr, int, int));
+
extern value_ptr call_function_by_hand PARAMS ((value_ptr, int, value_ptr *));
-extern value_ptr f77_value_literal_complex PARAMS ((value_ptr, value_ptr, int));
+extern value_ptr value_literal_complex PARAMS ((value_ptr, value_ptr, struct type*));
+
+extern void find_rt_vbase_offset PARAMS ((struct type *, struct type *, char *, int, int *, int *));
-extern value_ptr f77_value_literal_string PARAMS ((int, int, value_ptr *));
+extern value_ptr find_function_in_inferior PARAMS ((char *));
-extern value_ptr f77_value_substring PARAMS ((value_ptr, int, int));
+extern value_ptr value_allocate_space_in_inferior PARAMS ((int));
#endif /* !defined (VALUE_H) */
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