int offset, int length);
/* Compare LENGTH bytes of VAL1's contents starting at OFFSET1 with
- LENGTH bytes of VAL2's contents starting at OFFSET2. Returns true
- iff the set of available contents match. Unavailable contents
- compare equal with unavailable contents, and different with any
- available byte. For example, if 'x's represent an unavailable
- byte, and 'V' and 'Z' represent different available bytes, in a
- value with length 16:
+ LENGTH bytes of VAL2's contents starting at OFFSET2.
+
+ Note that "contents" refers to the whole value's contents
+ (value_contents_all), without any embedded offset adjustment. For
+ example, to compare a complete object value with itself, including
+ its enclosing type chunk, you'd do:
+
+ int len = TYPE_LENGTH (check_typedef (value_enclosing_type (val)));
+ value_available_contents (val, 0, val, 0, len);
+
+ Returns true iff the set of available contents match. Unavailable
+ contents compare equal with unavailable contents, and different
+ with any available byte. For example, if 'x's represent an
+ unavailable byte, and 'V' and 'Z' represent different available
+ bytes, in a value with length 16:
offset: 0 4 8 12 16
contents: xxxxVVVVxxxxVVZZ
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_history_ref (char *, char **);
extern struct value *value_at (struct type *type, CORE_ADDR addr);
extern struct value *value_at_lazy (struct type *type, CORE_ADDR addr);
extern CORE_ADDR parse_and_eval_address (char *exp);
-extern CORE_ADDR parse_and_eval_address_1 (char **expptr);
-
extern LONGEST parse_and_eval_long (char *exp);
extern void unop_promote (const struct language_defn *language,