FreeChainXenon/binutils-gdb
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* value.h (struct value): Add modifiable field.

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* values.c (allocate_value, record_latest_value, value_copy): Set it.
	(record_latest_value): Don't mess with VALUE_LVAL of value.
	* valops.c (value_assign): Check it.  Reword existing error
	message on not_lval.
This commit is contained in:
Jim Kingdon 1994-03-01 02:20:39 +00:00
parent 2fa73738cf
commit 30974778c1
4 changed files with 38 additions and 17 deletions
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36
gdb/value.h
View file

@ -1,5 +1,5 @@
/* Definitions for values of C expressions, for GDB.
Copyright 1986, 1987, 1989, 1992 Free Software Foundation, Inc.
Copyright 1986, 1987, 1989, 1992, 1993, 1994 Free Software Foundation, Inc.
This file is part of GDB.
@ -47,6 +47,8 @@ struct value
/* Type of value; either not an lval, or one of the various
different possible kinds of lval. */
enum lval_type lval;
/* Is it modifiable? Only relevant if lval != not_lval. */
int modifiable;
/* Location of value (if lval). */
union
{
@ -102,9 +104,7 @@ struct value
union {
long contents[1];
double force_double_align;
#ifdef CC_HAS_LONG_LONG
long long force_longlong_align;
#endif
LONGEST force_longlong_align;
} aligner;
};
@ -200,7 +200,7 @@ struct fn_field;
#endif
extern void
print_address_demangle PARAMS ((CORE_ADDR, FILE *, int));
print_address_demangle PARAMS ((CORE_ADDR, GDB_FILE *, int));
extern LONGEST
value_as_long PARAMS ((value val));
@ -238,6 +238,8 @@ extern value value_of_variable PARAMS ((struct symbol *var, struct block *b));
extern value value_of_register PARAMS ((int regnum));
extern int symbol_read_needs_frame PARAMS ((struct symbol *));
/* FIXME: Assumes equivalence of "struct frame_info *" and "FRAME" */
extern value read_var_value PARAMS ((struct symbol *var,
struct frame_info *frame));
@ -310,6 +312,10 @@ extern value value_being_returned PARAMS ((struct type *valtype,
char retbuf[REGISTER_BYTES],
int struct_return));
extern value value_in PARAMS ((value element, value set));
extern int value_bit_index PARAMS ((struct type *type, char *addr, int index));
extern int
using_struct_return PARAMS ((value function, CORE_ADDR funcaddr,
struct type *value_type, int gcc_p));
@ -420,7 +426,7 @@ extern CORE_ADDR
read_register PARAMS ((int regno));
extern void
write_register PARAMS ((int regno, long val));
write_register PARAMS ((int regno, LONGEST val));
extern void
supply_register PARAMS ((int regno, char *val));
@ -435,7 +441,7 @@ extern void
modify_field PARAMS ((char *addr, LONGEST fieldval, int bitpos, int bitsize));
extern void
type_print PARAMS ((struct type *type, char *varstring, FILE *stream,
type_print PARAMS ((struct type *type, char *varstring, GDB_FILE *stream,
int show));
extern char *
@ -443,28 +449,28 @@ baseclass_addr PARAMS ((struct type *type, int index, char *valaddr,
value *valuep, int *errp));
extern void
print_longest PARAMS ((FILE *stream, int format, int use_local,
LONGEST value));
print_longest PARAMS ((GDB_FILE *stream, int format, int use_local,
LONGEST val));
extern void
print_floating PARAMS ((char *valaddr, struct type *type, FILE *stream));
print_floating PARAMS ((char *valaddr, struct type *type, GDB_FILE *stream));
extern int
value_print PARAMS ((value val, FILE *stream, int format,
value_print PARAMS ((value val, GDB_FILE *stream, int format,
enum val_prettyprint pretty));
extern int
val_print PARAMS ((struct type *type, char *valaddr, CORE_ADDR address,
FILE *stream, int format, int deref_ref,
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, FILE *stream));
val_print_string PARAMS ((CORE_ADDR addr, unsigned int len, GDB_FILE *stream));
/* FIXME: Assumes equivalence of "struct frame_info *" and "FRAME" */
extern void
print_variable_value PARAMS ((struct symbol *var, struct frame_info *frame,
FILE *stream));
GDB_FILE *stream));
extern value
value_arg_coerce PARAMS ((value));
@ -473,7 +479,7 @@ extern int
check_field PARAMS ((value, const char *));
extern void
c_typedef_print PARAMS ((struct type *type, struct symbol *new, FILE *stream));
c_typedef_print PARAMS ((struct type *type, struct symbol *new, GDB_FILE *stream));
extern char *
internalvar_name PARAMS ((struct internalvar *var));