/* Definitions for values of C expressions, for GDB.
- Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
This file is part of GDB.
-GDB is free software; you can redistribute it and/or modify
+This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 1, or (at your option)
-any later version.
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
-GDB is distributed in the hope that it will be useful,
+This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GDB; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#if !defined (VALUE_H)
#define VALUE_H 1
+
/*
* The structure which defines the type of a value. It should never
* be possible for a program lval value to survive over a call to the inferior
/* In a register series in a frame not the current one, which may have been
partially saved or saved in different places (otherwise would be
lval_register or lval_memory). */
- lval_reg_frame_relative,
+ lval_reg_frame_relative
};
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
{
/* Address in inferior or byte of registers structure. */
CORE_ADDR address;
- /* Pointer to interrnal variable. */
+ /* Pointer to internal variable. */
struct internalvar *internalvar;
/* Number of register. Only used with
lval_reg_frame_relative. */
int offset;
/* Only used for bitfields; number of bits contained in them. */
int bitsize;
- /* Only used for bitfields; position of start of field. */
+ /* Only used for bitfields; position of start of field.
+ For BITS_BIG_ENDIAN=0 targets, it is the position of the LSB.
+ For BITS_BIG_ENDIAN=1 targets, it is the position of the MSB. */
int bitpos;
/* Frame value is relative to. In practice, this address is only
used if the value is stored in several registers in other than
variables or put into the value history are taken off this
list. */
struct value *next;
+
+ /* ??? When is this used? */
+ union {
+ CORE_ADDR memaddr;
+ 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;
union {
long contents[1];
double force_double_align;
-#ifdef LONG_LONG
- long long force_longlong_align;
-#endif
+ LONGEST force_longlong_align;
+ char *literal_data;
} aligner;
};
-typedef struct value *value;
+typedef struct value *value_ptr;
#define VALUE_TYPE(val) (val)->type
#define VALUE_LAZY(val) (val)->lazy
#define VALUE_CONTENTS_RAW(val) ((char *) (val)->aligner.contents)
#define VALUE_CONTENTS(val) ((void)(VALUE_LAZY(val) && value_fetch_lazy(val)),\
VALUE_CONTENTS_RAW(val))
-extern int value_fetch_lazy ();
+extern int value_fetch_lazy PARAMS ((value_ptr val));
+
#define VALUE_LVAL(val) (val)->lval
#define VALUE_ADDRESS(val) (val)->location.address
#define VALUE_INTERNALVAR(val) (val)->location.internalvar
/* Convert a REF to the object referenced. */
#define COERCE_REF(arg) \
-{ if (TYPE_CODE ( VALUE_TYPE (arg)) == TYPE_CODE_REF) \
+{ 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)));}
#define COERCE_ARRAY(arg) \
{ COERCE_REF(arg); \
- if (VALUE_REPEATED (arg) \
- || TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ARRAY) \
+ if (current_language->c_style_arrays \
+ && (VALUE_REPEATED (arg) \
+ || 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); \
arg = value_cast (builtin_type_unsigned_int, arg); \
}
+#define COERCE_VARYING_ARRAY(arg) \
+{ if (chill_varying_type (VALUE_TYPE (arg))) arg = varying_to_slice (arg); }
+
/* If ARG is an enum, convert it to an integer. */
#define COERCE_ENUM(arg) \
-{ if (TYPE_CODE ( VALUE_TYPE (arg)) == TYPE_CODE_REF) \
- arg = value_ind (arg); \
+{ COERCE_REF (arg); \
if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ENUM) \
arg = value_cast (builtin_type_unsigned_int, arg); \
}
{
struct internalvar *next;
char *name;
- value value;
+ value_ptr value;
};
+
+/* Pointer to member function. Depends on compiler implementation. */
+
+#define METHOD_PTR_IS_VIRTUAL(ADDR) ((ADDR) & 0x80000000)
+#define METHOD_PTR_FROM_VOFFSET(OFFSET) (0x80000000 + (OFFSET))
+#define METHOD_PTR_TO_VOFFSET(ADDR) (~0x80000000 & (ADDR))
+
\f
#include "symtab.h"
-LONGEST value_as_long ();
-double value_as_double ();
-LONGEST unpack_long ();
-double unpack_double ();
-long unpack_field_as_long ();
-value value_from_long ();
-value value_from_double ();
-value value_at ();
-value value_at_lazy ();
-value value_from_register ();
-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_coerce_function ();
-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_primitive_field ();
-value value_cast ();
-value value_zero ();
-value value_repeat ();
-value value_subscript ();
-
-value value_being_returned ();
-int using_struct_return ();
-void set_return_value ();
-
-value evaluate_expression ();
-value evaluate_type ();
-value parse_and_eval ();
-value parse_to_comma_and_eval ();
-extern CORE_ADDR parse_and_eval_address ();
-extern CORE_ADDR parse_and_eval_address_1 ();
-
-value access_value_history ();
-value value_of_internalvar ();
-void set_internalvar ();
-void set_internalvar_component ();
-struct internalvar *lookup_internalvar ();
-
-int value_equal ();
-int value_less ();
-int value_zerop ();
+#include "gdbtypes.h"
+#include "expression.h"
+
+#ifdef __STDC__
+struct frame_info;
+struct fn_field;
+#endif
+
+extern void
+print_address_demangle PARAMS ((CORE_ADDR, GDB_FILE *, int));
+
+extern LONGEST value_as_long PARAMS ((value_ptr val));
+
+extern double 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 CORE_ADDR unpack_pointer PARAMS ((struct type *type, char *valaddr));
+
+extern LONGEST unpack_field_as_long PARAMS ((struct type *type, char *valaddr,
+ int fieldno));
+
+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_at PARAMS ((struct type *type, CORE_ADDR addr));
+
+extern value_ptr value_at_lazy PARAMS ((struct type *type, CORE_ADDR addr));
+
+extern value_ptr value_from_register PARAMS ((struct type *type, int regnum,
+ struct frame_info * frame));
+
+extern value_ptr value_of_variable PARAMS ((struct symbol *var,
+ struct block *b));
+
+extern value_ptr value_of_register PARAMS ((int regnum));
+
+extern int symbol_read_needs_frame PARAMS ((struct symbol *));
+
+extern value_ptr read_var_value PARAMS ((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 PARAMS ((struct type *type));
+
+extern value_ptr allocate_repeat_value PARAMS ((struct type *type, int count));
+
+extern value_ptr value_mark PARAMS ((void));
+
+extern void value_free_to_mark PARAMS ((value_ptr mark));
+
+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 PARAMS ((int lowbound, int highbound,
+ value_ptr *elemvec));
+
+extern value_ptr value_concat PARAMS ((value_ptr arg1, value_ptr arg2));
+
+extern value_ptr value_binop PARAMS ((value_ptr arg1, value_ptr arg2,
+ enum exp_opcode op));
+
+extern value_ptr value_add PARAMS ((value_ptr arg1, value_ptr arg2));
+
+extern value_ptr value_sub PARAMS ((value_ptr arg1, value_ptr arg2));
+
+extern value_ptr value_coerce_array PARAMS ((value_ptr arg1));
+
+extern value_ptr value_coerce_function PARAMS ((value_ptr arg1));
+
+extern value_ptr value_ind PARAMS ((value_ptr arg1));
+
+extern value_ptr value_addr PARAMS ((value_ptr arg1));
+
+extern value_ptr value_assign PARAMS ((value_ptr toval, value_ptr fromval));
+
+extern value_ptr value_neg PARAMS ((value_ptr arg1));
+
+extern value_ptr value_complement PARAMS ((value_ptr arg1));
+
+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 PARAMS ((struct type *domain,
+ int offset,
+ struct type *curtype,
+ char *name,
+ struct type *intype));
+
+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 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 value_repeat PARAMS ((value_ptr arg1, int count));
+
+extern value_ptr value_subscript PARAMS ((value_ptr array, value_ptr idx));
+
+extern value_ptr value_from_vtable_info PARAMS ((value_ptr arg,
+ struct type *type));
+
+extern value_ptr value_being_returned PARAMS ((struct type *valtype,
+ char retbuf[REGISTER_BYTES],
+ int struct_return));
+
+extern value_ptr value_in PARAMS ((value_ptr element, value_ptr set));
+
+extern int value_bit_index PARAMS ((struct type *type, char *addr, int index));
+
+extern int using_struct_return PARAMS ((value_ptr function, CORE_ADDR funcaddr,
+ struct type *value_type, int gcc_p));
+
+extern void set_return_value PARAMS ((value_ptr val));
+
+extern value_ptr evaluate_expression PARAMS ((struct expression *exp));
+
+extern value_ptr evaluate_type PARAMS ((struct expression *exp));
+
+extern value_ptr parse_and_eval PARAMS ((char *exp));
+
+extern value_ptr parse_to_comma_and_eval PARAMS ((char **expp));
+
+extern struct type *parse_and_eval_type PARAMS ((char *p, int length));
+
+extern CORE_ADDR parse_and_eval_address PARAMS ((char *exp));
+
+extern CORE_ADDR parse_and_eval_address_1 PARAMS ((char **expptr));
+
+extern value_ptr access_value_history PARAMS ((int num));
+
+extern value_ptr value_of_internalvar PARAMS ((struct internalvar *var));
+
+extern void set_internalvar PARAMS ((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 struct internalvar *lookup_internalvar PARAMS ((char *name));
+
+extern int value_equal PARAMS ((value_ptr arg1, value_ptr arg2));
+
+extern int value_less PARAMS ((value_ptr arg1, value_ptr arg2));
+
+extern int value_logical_not PARAMS ((value_ptr arg1));
/* C++ */
-value value_of_this ();
-value value_static_field ();
-value value_x_binop ();
-value value_x_unop ();
-value value_fn_field ();
-value value_virtual_fn_field ();
-value value_static_field ();
-int binop_user_defined_p ();
-int unop_user_defined_p ();
-int typecmp ();
-int fill_in_vptr_fieldno ();
-int destructor_name_p ();
-
-#define value_free(val) free (val)
-void free_all_values ();
-void release_value ();
-int record_latest_value ();
-
-void registers_changed ();
-void read_register_bytes ();
-void write_register_bytes ();
-void read_register_gen ();
-CORE_ADDR read_register ();
-void write_register ();
-void supply_register ();
-void get_saved_register ();
-
-void modify_field ();
-void type_print ();
-void type_print_1 ();
-
-/* Possibilities for prettyprint parameters to routines which print
- things. */
-enum val_prettyprint {
- Val_no_prettyprint = 0,
- Val_prettyprint,
- /* Use the default setting which the user has specified. */
- Val_pretty_default
- };
-char *baseclass_addr ();
-void print_floating ();
-int value_print ();
-int val_print ();
-void print_variable_value ();
-char *internalvar_name ();
-void clear_value_history ();
-void clear_internalvars ();
+extern value_ptr value_of_this PARAMS ((int complain));
+
+extern value_ptr value_x_binop PARAMS ((value_ptr arg1, value_ptr arg2,
+ enum exp_opcode op,
+ enum exp_opcode otherop));
+
+extern value_ptr value_x_unop PARAMS ((value_ptr arg1, enum exp_opcode op));
+
+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_virtual_fn_field PARAMS ((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 unop_user_defined_p PARAMS ((enum exp_opcode op, value_ptr arg1));
+
+extern int destructor_name_p PARAMS ((const char *name,
+ const struct type *type));
+
+#define value_free(val) free ((PTR)val)
+
+extern void free_all_values PARAMS ((void));
+
+extern void release_value PARAMS ((value_ptr val));
+
+extern int record_latest_value PARAMS ((value_ptr val));
+
+extern void registers_changed PARAMS ((void));
+
+extern void read_register_bytes PARAMS ((int regbyte, char *myaddr, int len));
+
+extern void write_register_bytes PARAMS ((int regbyte, char *myaddr, int len));
+
+extern void
+read_register_gen PARAMS ((int regno, char *myaddr));
+
+extern CORE_ADDR
+read_register PARAMS ((int regno));
+
+extern void
+write_register PARAMS ((int regno, LONGEST val));
+
+extern void
+supply_register PARAMS ((int regno, char *val));
+
+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
+modify_field PARAMS ((char *addr, LONGEST fieldval, int bitpos, int bitsize));
+
+extern void
+type_print PARAMS ((struct type *type, char *varstring, GDB_FILE *stream,
+ int show));
+
+extern char *baseclass_addr PARAMS ((struct type *type, int index,
+ char *valaddr,
+ value_ptr *valuep, int *errp));
+
+extern void
+print_longest PARAMS ((GDB_FILE *stream, int format, int use_local,
+ LONGEST val));
+
+extern void
+print_floating PARAMS ((char *valaddr, struct type *type, GDB_FILE *stream));
+
+extern int value_print PARAMS ((value_ptr val, GDB_FILE *stream, int format,
+ enum val_prettyprint pretty));
+
+extern void
+value_print_array_elements PARAMS ((value_ptr val, GDB_FILE* stream,
+ int format, enum val_prettyprint pretty));
+
+extern value_ptr
+value_release_to_mark PARAMS ((value_ptr mark));
+
+extern int
+val_print PARAMS ((struct type *type, char *valaddr, 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));
+
+extern void
+print_variable_value PARAMS ((struct symbol *var, struct frame_info *frame,
+ GDB_FILE *stream));
+
+extern int check_field PARAMS ((value_ptr, const char *));
+
+extern void
+c_typedef_print PARAMS ((struct type *type, struct symbol *news, GDB_FILE *stream));
+
+extern char *
+internalvar_name PARAMS ((struct internalvar *var));
+
+extern void
+clear_value_history PARAMS ((void));
+
+extern void
+clear_internalvars PARAMS ((void));
+
+/* From values.c */
+
+extern value_ptr value_copy PARAMS ((value_ptr));
+
+extern int baseclass_offset PARAMS ((struct type *, int, value_ptr, int));
+
+/* 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 value_literal_complex PARAMS ((value_ptr, value_ptr, struct type*));
-#endif /* value.h not already included. */
+#endif /* !defined (VALUE_H) */
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