[binutils.git] / gdb / value.h

/* Definitions for values of C expressions, for GDB.
   Copyright 1986, 1987, 1989, 1992 Free Software Foundation, Inc.

This file is part of GDB.

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 2 of the License, or
(at your option) any later version.

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 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
 * (ie to be put into the history list or an internal variable).
 */
enum lval_type {
  /* Not an lval.  */
  not_lval,
  /* In memory.  Could be a saved register.  */
  lval_memory,
  /* In a register.  */
  lval_register,
  /* In a gdb internal variable.  */
  lval_internalvar,
  /* Part of a gdb internal variable (structure field).  */
  lval_internalvar_component,
  /* 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
};

struct value
  {
    /* Type of value; either not an lval, or one of the various
       different possible kinds of lval.  */
    enum lval_type lval;
    /* Location of value (if lval).  */
    union
      {
	/* Address in inferior or byte of registers structure.  */
	CORE_ADDR address;
	/* Pointer to interrnal variable.  */
	struct internalvar *internalvar;
	/* Number of register.  Only used with
	   lval_reg_frame_relative.  */
	int regnum;
      } location;
    /* Describes offset of a value within lval a structure in bytes.  */
    int offset;	
    /* Only used for bitfields; number of bits contained in them.  */
    int bitsize;
    /* Only used for bitfields; position of start of field.  */
    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
       the current frame, and these registers have not all been saved
       at the same place in memory.  This will be described in the
       lval enum above as "lval_reg_frame_relative".  */
    CORE_ADDR frame_addr;
    /* Type of the value.  */
    struct type *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
       list.  */
    struct value *next;
    /* 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?  */
    short regno;
    /* If zero, contents of this value are in the contents field.
       If nonzero, contents are in inferior memory at address
       in the location.address field plus the offset field
       (and the lval field should be lval_memory).  */
    char lazy;
    /* If nonzero, this is the value of a variable which does not
       actually exist in the program.  */
    char optimized_out;
    /* 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.  */
    union {
      long contents[1];
      double force_double_align;
#ifdef LONG_LONG
      long long force_longlong_align;
#endif
    } aligner;

  };

typedef struct value *value;

#define VALUE_TYPE(val) (val)->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.  
   VALUE_CONTENTS is used when the contents of the buffer are needed --
   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)
#define VALUE_CONTENTS(val) ((void)(VALUE_LAZY(val) && value_fetch_lazy(val)),\
			     VALUE_CONTENTS_RAW(val))
extern int
value_fetch_lazy PARAMS ((value val));

#define VALUE_LVAL(val) (val)->lval
#define VALUE_ADDRESS(val) (val)->location.address
#define VALUE_INTERNALVAR(val) (val)->location.internalvar
#define VALUE_FRAME_REGNUM(val) ((val)->location.regnum)
#define VALUE_FRAME(val) ((val)->frame_addr)
#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
#define VALUE_OPTIMIZED_OUT(val) ((val)->optimized_out)

/* 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)));}

/* If ARG is an array, convert it to a pointer.
   If ARG is an enum, convert it to an integer.
   If ARG is a function, convert it to a function pointer.

   References are dereferenced.  */

#define COERCE_ARRAY(arg)    \
{ COERCE_REF(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_FUNC)                   \
    arg = value_coerce_function (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_REF)			\
    arg = value_ind (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;
};

\f
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"

#ifdef __STDC__
struct frame_info;
#endif

extern void
print_address_demangle PARAMS ((CORE_ADDR, FILE *, int));

extern LONGEST
value_as_long PARAMS ((value val));

extern double
value_as_double PARAMS ((value val));

extern CORE_ADDR
value_as_pointer PARAMS ((value 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 long
unpack_field_as_long PARAMS ((struct type *type, char *valaddr,
			      int fieldno));

extern value
value_from_longest PARAMS ((struct type *type, LONGEST num));

extern value
value_from_double PARAMS ((struct type *type, double num));

extern value
value_at PARAMS ((struct type *type, CORE_ADDR addr));

extern value
value_at_lazy PARAMS ((struct type *type, CORE_ADDR addr));

/* FIXME:  Assumes equivalence of "struct frame_info *" and "FRAME" */
extern value
value_from_register PARAMS ((struct type *type, int regnum,
			     struct frame_info * frame));

extern value
value_of_variable PARAMS ((struct symbol *var));

extern value
value_of_register PARAMS ((int regnum));

/* FIXME:  Assumes equivalence of "struct frame_info *" and "FRAME" */
extern value
read_var_value PARAMS ((struct symbol *var, struct frame_info *frame));

/* FIXME:  Assumes equivalence of "struct frame_info *" and "FRAME" */
extern value
locate_var_value PARAMS ((struct symbol *var, struct frame_info *frame));

extern value
allocate_value PARAMS ((struct type *type));

extern value
allocate_repeat_value PARAMS ((struct type *type, int count));

extern value
value_mark PARAMS ((void));

extern void
value_free_to_mark PARAMS ((value mark));

extern value
value_string PARAMS ((char *ptr, int len));

extern value
value_binop PARAMS ((value arg1, value arg2, enum exp_opcode op));

extern value
value_add PARAMS ((value arg1, value arg2));

extern value
value_sub PARAMS ((value arg1, value arg2));

extern value
value_coerce_array PARAMS ((value arg1));

extern value
value_coerce_function PARAMS ((value arg1));

extern value
value_ind PARAMS ((value arg1));

extern value
value_addr PARAMS ((value arg1));

extern value
value_assign PARAMS ((value toval, value fromval));

extern value
value_neg PARAMS ((value arg1));

extern value
value_lognot PARAMS ((value arg1));

extern value
value_struct_elt PARAMS ((value *argp, value *args, char *name,
			  int *static_memfuncp, char *err));

extern value
value_struct_elt_for_reference PARAMS ((struct type *domain,
					struct type *curtype,
					char *name,
					struct type *intype));

extern value
value_field PARAMS ((value arg1, int fieldno));

extern value
value_primitive_field PARAMS ((value arg1, int offset, int fieldno,
			       struct type *arg_type));

extern value
value_cast PARAMS ((struct type *type, value arg2));

extern value
value_zero PARAMS ((struct type *type, enum lval_type lv));

extern value
value_repeat PARAMS ((value arg1, int count));

extern value
value_subscript PARAMS ((value array, value idx));

extern value
value_from_vtable_info PARAMS ((value arg, struct type *type));

extern value
value_being_returned PARAMS ((struct type *valtype, 
			      char retbuf[REGISTER_BYTES],
			      int struct_return));

extern int
using_struct_return PARAMS ((value function, CORE_ADDR funcaddr,
			     struct type *value_type, int gcc_p));

extern void
set_return_value PARAMS ((value val));

extern value
evaluate_expression PARAMS ((struct expression *exp));

extern value
evaluate_type PARAMS ((struct expression *exp));

extern value
parse_and_eval PARAMS ((char *exp));

extern value
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
access_value_history PARAMS ((int num));

extern value
value_of_internalvar PARAMS ((struct internalvar *var));

extern void
set_internalvar PARAMS ((struct internalvar *var, value val));

extern void
set_internalvar_component PARAMS ((struct internalvar *var, int offset,
				   int bitpos, int bitsize,
				   value newvalue));

extern struct internalvar *
lookup_internalvar PARAMS ((char *name));

extern int
value_equal PARAMS ((value arg1, value arg2));

extern int
value_less PARAMS ((value arg1, value arg2));

extern int
value_zerop PARAMS ((value arg1));

/* C++ */

extern value
value_of_this PARAMS ((int complain));

extern value
value_x_binop PARAMS ((value arg1, value arg2, enum exp_opcode op,
		       enum exp_opcode otherop));

extern value
value_x_unop PARAMS ((value arg1, enum exp_opcode op));

extern value
value_fn_field PARAMS ((struct fn_field *f, int j));

extern value
value_virtual_fn_field PARAMS ((value arg1, struct fn_field *f, int j,
				struct type *type));

extern int
binop_user_defined_p PARAMS ((enum exp_opcode op, value arg1, value arg2));

extern int
unop_user_defined_p PARAMS ((enum exp_opcode op, value arg1));

extern int
typecmp PARAMS ((int staticp, struct type *t1[], value t2[]));

extern int
destructor_name_p PARAMS ((const char *name, const struct type *type));

#define value_free(val) free (val)

extern void
free_all_values PARAMS ((void));

extern void
release_value PARAMS ((value val));

extern int
record_latest_value PARAMS ((value 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, int val));

extern void
supply_register PARAMS ((int regno, char *val));

/* FIXME:  Assumes equivalence of "struct frame_info *" and "FRAME" */
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, int fieldval, int bitpos, int bitsize));

extern void
type_print PARAMS ((struct type *type, char *varstring, FILE *stream,
		    int show));

extern void
type_print_1 PARAMS ((struct type *type, char *varstring, FILE *stream,
		      int show, int level));

/* 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
  };

extern char *
baseclass_addr PARAMS ((struct type *type, int index, char *valaddr,
			value *valuep, int *errp));

extern void
print_floating PARAMS ((char *valaddr, struct type *type, FILE *stream));

extern int
value_print PARAMS ((value val, 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,
		   int recurse, enum val_prettyprint pretty));

/* FIXME:  Assumes equivalence of "struct frame_info *" and "FRAME" */
extern void
print_variable_value PARAMS ((struct symbol *var, struct frame_info *frame,
			      FILE *stream));

extern value
value_arg_coerce PARAMS ((value));

extern int
check_field PARAMS ((value, const char *));

extern void
typedef_print PARAMS ((struct type *type, struct symbol *new, 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
value_copy PARAMS ((value));

/* From valops.c */

extern value
call_function_by_hand PARAMS ((value, int, value *));

#endif	/* !defined (VALUE_H) */
Commit	Line	Data
bd5635a1	1	/* Definitions for values of C expressions, for GDB.
e17960fb	2	Copyright 1986, 1987, 1989, 1992 Free Software Foundation, Inc.
bd5635a1 RP	3
	4	This file is part of GDB.
	5
e17960fb	6	This program is free software; you can redistribute it and/or modify
bd5635a1	7	it under the terms of the GNU General Public License as published by
e17960fb JG	8	the Free Software Foundation; either version 2 of the License, or
e17960fb JG	9	(at your option) any later version.
bd5635a1	10
e17960fb	11	This program is distributed in the hope that it will be useful,
bd5635a1 RP	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
e17960fb JG	17	along with this program; if not, write to the Free Software
e17960fb JG	18	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
bd5635a1 RP	19
	20	#if !defined (VALUE_H)
	21	#define VALUE_H 1
01be6913	22
bd5635a1 RP	23	/*
	24	* The structure which defines the type of a value. It should never
	25	* be possible for a program lval value to survive over a call to the inferior
	26	* (ie to be put into the history list or an internal variable).
	27	*/
	28	enum lval_type {
	29	/* Not an lval. */
	30	not_lval,
	31	/* In memory. Could be a saved register. */
	32	lval_memory,
	33	/* In a register. */
	34	lval_register,
	35	/* In a gdb internal variable. */
	36	lval_internalvar,
	37	/* Part of a gdb internal variable (structure field). */
	38	lval_internalvar_component,
	39	/* In a register series in a frame not the current one, which may have been
	40	partially saved or saved in different places (otherwise would be
	41	lval_register or lval_memory). */
e17960fb	42	lval_reg_frame_relative
bd5635a1 RP	43	};
	44
	45	struct value
	46	{
	47	/* Type of value; either not an lval, or one of the various
	48	different possible kinds of lval. */
	49	enum lval_type lval;
	50	/* Location of value (if lval). */
	51	union
	52	{
	53	/* Address in inferior or byte of registers structure. */
	54	CORE_ADDR address;
	55	/* Pointer to interrnal variable. */
	56	struct internalvar *internalvar;
	57	/* Number of register. Only used with
	58	lval_reg_frame_relative. */
	59	int regnum;
	60	} location;
	61	/* Describes offset of a value within lval a structure in bytes. */
	62	int offset;
	63	/* Only used for bitfields; number of bits contained in them. */
	64	int bitsize;
	65	/* Only used for bitfields; position of start of field. */
	66	int bitpos;
	67	/* Frame value is relative to. In practice, this address is only
	68	used if the value is stored in several registers in other than
	69	the current frame, and these registers have not all been saved
	70	at the same place in memory. This will be described in the
	71	lval enum above as "lval_reg_frame_relative". */
	72	CORE_ADDR frame_addr;
	73	/* Type of the value. */
	74	struct type *type;
	75	/* Values are stored in a chain, so that they can be deleted
	76	easily over calls to the inferior. Values assigned to internal
	77	variables or put into the value history are taken off this
	78	list. */
	79	struct value *next;
	80	/* If an lval is forced to repeat, a new value is created with
	81	these fields set. The new value is not an lval. */
	82	short repeated;
	83	short repetitions;
	84	/* Register number if the value is from a register. Is not kept
	85	if you take a field of a structure that is stored in a
	86	register. Shouldn't it be? */
	87	short regno;
	88	/* If zero, contents of this value are in the contents field.
	89	If nonzero, contents are in inferior memory at address
	90	in the location.address field plus the offset field
	91	(and the lval field should be lval_memory). */
	92	char lazy;
	93	/* If nonzero, this is the value of a variable which does not
	94	actually exist in the program. */
	95	char optimized_out;
	96	/* Actual contents of the value. For use of this value; setting
	97	it uses the stuff above. Not valid if lazy is nonzero.
	98	Target byte-order. We force it to be aligned properly for any
	99	possible value. */
	100	union {
	101	long contents[1];
	102	double force_double_align;
	103	#ifdef LONG_LONG
	104	long long force_longlong_align;
	105	#endif
	106	} aligner;
107
108	};
109
110	typedef struct value *value;
111
112	#define VALUE_TYPE(val) (val)->type
113	#define VALUE_LAZY(val) (val)->lazy
114	/* VALUE_CONTENTS and VALUE_CONTENTS_RAW both return the address of
115	the gdb buffer used to hold a copy of the contents of the lval.
116	VALUE_CONTENTS is used when the contents of the buffer are needed --
117	it uses value_fetch_lazy() to load the buffer from the process being
118	debugged if it hasn't already been loaded. VALUE_CONTENTS_RAW is
119	used when data is being stored into the buffer, or when it is
120	certain that the contents of the buffer are valid. */
121	#define VALUE_CONTENTS_RAW(val) ((char *) (val)->aligner.contents)
122	#define VALUE_CONTENTS(val) ((void)(VALUE_LAZY(val) && value_fetch_lazy(val)),\
123	VALUE_CONTENTS_RAW(val))
01be6913 PB	124	extern int
	125	value_fetch_lazy PARAMS ((value val));
	126
bd5635a1 RP	127	#define VALUE_LVAL(val) (val)->lval
	128	#define VALUE_ADDRESS(val) (val)->location.address
	129	#define VALUE_INTERNALVAR(val) (val)->location.internalvar
	130	#define VALUE_FRAME_REGNUM(val) ((val)->location.regnum)
	131	#define VALUE_FRAME(val) ((val)->frame_addr)
	132	#define VALUE_OFFSET(val) (val)->offset
	133	#define VALUE_BITSIZE(val) (val)->bitsize
	134	#define VALUE_BITPOS(val) (val)->bitpos
	135	#define VALUE_NEXT(val) (val)->next
	136	#define VALUE_REPEATED(val) (val)->repeated
	137	#define VALUE_REPETITIONS(val) (val)->repetitions
	138	#define VALUE_REGNO(val) (val)->regno
	139	#define VALUE_OPTIMIZED_OUT(val) ((val)->optimized_out)
	140
	141	/* Convert a REF to the object referenced. */
	142
	143	#define COERCE_REF(arg) \
e17960fb	144	{ if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_REF) \
bd5635a1 RP	145	arg = value_at_lazy (TYPE_TARGET_TYPE (VALUE_TYPE (arg)), \
	146	unpack_long (VALUE_TYPE (arg), \
	147	VALUE_CONTENTS (arg)));}
	148
	149	/* If ARG is an array, convert it to a pointer.
	150	If ARG is an enum, convert it to an integer.
	151	If ARG is a function, convert it to a function pointer.
	152
	153	References are dereferenced. */
	154
	155	#define COERCE_ARRAY(arg) \
	156	{ COERCE_REF(arg); \
	157	if (VALUE_REPEATED (arg) \
	158	\|\| TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ARRAY) \
	159	arg = value_coerce_array (arg); \
	160	if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_FUNC) \
	161	arg = value_coerce_function (arg); \
	162	if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ENUM) \
	163	arg = value_cast (builtin_type_unsigned_int, arg); \
	164	}
	165
	166	/* If ARG is an enum, convert it to an integer. */
	167
	168	#define COERCE_ENUM(arg) \
e17960fb	169	{ if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_REF) \
bd5635a1 RP	170	arg = value_ind (arg); \
	171	if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ENUM) \
	172	arg = value_cast (builtin_type_unsigned_int, arg); \
	173	}
	174
	175	/* Internal variables (variables for convenience of use of debugger)
	176	are recorded as a chain of these structures. */
	177
	178	struct internalvar
	179	{
	180	struct internalvar *next;
	181	char *name;
	182	value value;
	183	};
01be6913	184
bd5635a1 RP	185	\f
bd5635a1 RP	186	#include "symtab.h"
01be6913 PB	187	#include "gdbtypes.h"
	188	#include "expression.h"
	189
e17960fb	190	#ifdef __STDC__
01be6913	191	struct frame_info;
e17960fb	192	#endif
01be6913 PB	193
	194	extern void
	195	print_address_demangle PARAMS ((CORE_ADDR, FILE *, int));
	196
	197	extern LONGEST
	198	value_as_long PARAMS ((value val));
	199
	200	extern double
	201	value_as_double PARAMS ((value val));
	202
	203	extern CORE_ADDR
	204	value_as_pointer PARAMS ((value val));
	205
	206	extern LONGEST
	207	unpack_long PARAMS ((struct type type, char valaddr));
	208
	209	extern double
	210	unpack_double PARAMS ((struct type type, char valaddr, int *invp));
	211
	212	extern CORE_ADDR
	213	unpack_pointer PARAMS ((struct type type, char valaddr));
	214
	215	extern long
	216	unpack_field_as_long PARAMS ((struct type type, char valaddr,
	217	int fieldno));
	218
	219	extern value
	220	value_from_longest PARAMS ((struct type *type, LONGEST num));
	221
	222	extern value
	223	value_from_double PARAMS ((struct type *type, double num));
	224
	225	extern value
	226	value_at PARAMS ((struct type *type, CORE_ADDR addr));
	227
	228	extern value
	229	value_at_lazy PARAMS ((struct type *type, CORE_ADDR addr));
	230
	231	/* FIXME: Assumes equivalence of "struct frame_info " and "FRAME" /
	232	extern value
	233	value_from_register PARAMS ((struct type *type, int regnum,
	234	struct frame_info * frame));
	235
	236	extern value
	237	value_of_variable PARAMS ((struct symbol *var));
	238
	239	extern value
	240	value_of_register PARAMS ((int regnum));
	241
	242	/* FIXME: Assumes equivalence of "struct frame_info " and "FRAME" /
	243	extern value
	244	read_var_value PARAMS ((struct symbol var, struct frame_info frame));
	245
	246	/* FIXME: Assumes equivalence of "struct frame_info " and "FRAME" /
	247	extern value
	248	locate_var_value PARAMS ((struct symbol var, struct frame_info frame));
	249
	250	extern value
	251	allocate_value PARAMS ((struct type *type));
	252
	253	extern value
	254	allocate_repeat_value PARAMS ((struct type *type, int count));
	255
	256	extern value
257	value_mark PARAMS ((void));
258
259	extern void
260	value_free_to_mark PARAMS ((value mark));
261
262	extern value
263	value_string PARAMS ((char *ptr, int len));
264
265	extern value
266	value_binop PARAMS ((value arg1, value arg2, enum exp_opcode op));
267
268	extern value
269	value_add PARAMS ((value arg1, value arg2));
270
271	extern value
272	value_sub PARAMS ((value arg1, value arg2));
273
274	extern value
275	value_coerce_array PARAMS ((value arg1));
276
277	extern value
278	value_coerce_function PARAMS ((value arg1));
279
280	extern value
281	value_ind PARAMS ((value arg1));
282
283	extern value
284	value_addr PARAMS ((value arg1));
285
286	extern value
287	value_assign PARAMS ((value toval, value fromval));
288
289	extern value
290	value_neg PARAMS ((value arg1));
291
292	extern value
293	value_lognot PARAMS ((value arg1));
294
295	extern value
296	value_struct_elt PARAMS ((value argp, value args, char *name,
297	int static_memfuncp, char err));
298
299	extern value
300	value_struct_elt_for_reference PARAMS ((struct type *domain,
301	struct type *curtype,
302	char *name,
303	struct type *intype));
304
305	extern value
306	value_field PARAMS ((value arg1, int fieldno));
307
308	extern value
309	value_primitive_field PARAMS ((value arg1, int offset, int fieldno,
310	struct type *arg_type));
311
312	extern value
313	value_cast PARAMS ((struct type *type, value arg2));
314
315	extern value
316	value_zero PARAMS ((struct type *type, enum lval_type lv));
317
318	extern value
319	value_repeat PARAMS ((value arg1, int count));
320
321	extern value
322	value_subscript PARAMS ((value array, value idx));
323
324	extern value
325	value_from_vtable_info PARAMS ((value arg, struct type *type));
326
327	extern value
328	value_being_returned PARAMS ((struct type *valtype,
329	char retbuf[REGISTER_BYTES],
330	int struct_return));
331
332	extern int
333	using_struct_return PARAMS ((value function, CORE_ADDR funcaddr,
334	struct type *value_type, int gcc_p));
335
336	extern void
337	set_return_value PARAMS ((value val));
338
339	extern value
340	evaluate_expression PARAMS ((struct expression *exp));
341
342	extern value
343	evaluate_type PARAMS ((struct expression *exp));
344
345	extern value
346	parse_and_eval PARAMS ((char *exp));
347
348	extern value
349	parse_to_comma_and_eval PARAMS ((char **expp));
350
351	extern struct type *
352	parse_and_eval_type PARAMS ((char *p, int length));
353
354	extern CORE_ADDR
355	parse_and_eval_address PARAMS ((char *exp));
356
357	extern CORE_ADDR
358	parse_and_eval_address_1 PARAMS ((char **expptr));
359
360	extern value
361	access_value_history PARAMS ((int num));
362
363	extern value
364	value_of_internalvar PARAMS ((struct internalvar *var));
365
366	extern void
367	set_internalvar PARAMS ((struct internalvar *var, value val));
368
369	extern void
370	set_internalvar_component PARAMS ((struct internalvar *var, int offset,
371	int bitpos, int bitsize,
372	value newvalue));
373
374	extern struct internalvar *
375	lookup_internalvar PARAMS ((char *name));
376
377	extern int
378	value_equal PARAMS ((value arg1, value arg2));
379
380	extern int
381	value_less PARAMS ((value arg1, value arg2));
382
383	extern int
384	value_zerop PARAMS ((value arg1));
bd5635a1 RP	385
bd5635a1 RP	386	/* C++ */
01be6913 PB	387
	388	extern value
	389	value_of_this PARAMS ((int complain));
	390
	391	extern value
	392	value_x_binop PARAMS ((value arg1, value arg2, enum exp_opcode op,
	393	enum exp_opcode otherop));
	394
	395	extern value
	396	value_x_unop PARAMS ((value arg1, enum exp_opcode op));
	397
	398	extern value
	399	value_fn_field PARAMS ((struct fn_field *f, int j));
	400
	401	extern value
	402	value_virtual_fn_field PARAMS ((value arg1, struct fn_field *f, int j,
	403	struct type *type));
	404
	405	extern int
	406	binop_user_defined_p PARAMS ((enum exp_opcode op, value arg1, value arg2));
	407
	408	extern int
	409	unop_user_defined_p PARAMS ((enum exp_opcode op, value arg1));
	410
	411	extern int
	412	typecmp PARAMS ((int staticp, struct type *t1[], value t2[]));
	413
	414	extern int
	415	destructor_name_p PARAMS ((const char name, const struct type type));
bd5635a1 RP	416
bd5635a1 RP	417	#define value_free(val) free (val)
01be6913 PB	418
	419	extern void
	420	free_all_values PARAMS ((void));
	421
	422	extern void
	423	release_value PARAMS ((value val));
	424
	425	extern int
	426	record_latest_value PARAMS ((value val));
	427
	428	extern void
	429	registers_changed PARAMS ((void));
	430
	431	extern void
	432	read_register_bytes PARAMS ((int regbyte, char *myaddr, int len));
	433
	434	extern void
	435	write_register_bytes PARAMS ((int regbyte, char *myaddr, int len));
	436
	437	extern void
	438	read_register_gen PARAMS ((int regno, char *myaddr));
	439
	440	extern CORE_ADDR
	441	read_register PARAMS ((int regno));
	442
	443	extern void
	444	write_register PARAMS ((int regno, int val));
	445
	446	extern void
	447	supply_register PARAMS ((int regno, char *val));
	448
	449	/* FIXME: Assumes equivalence of "struct frame_info " and "FRAME" /
	450	extern void
	451	get_saved_register PARAMS ((char raw_buffer, int optimized,
	452	CORE_ADDR addrp, struct frame_info frame,
	453	int regnum, enum lval_type *lval));
	454
	455	extern void
	456	modify_field PARAMS ((char *addr, int fieldval, int bitpos, int bitsize));
	457
	458	extern void
	459	type_print PARAMS ((struct type type, char varstring, FILE *stream,
	460	int show));
	461
	462	extern void
	463	type_print_1 PARAMS ((struct type type, char varstring, FILE *stream,
	464	int show, int level));
bd5635a1 RP	465
	466	/* Possibilities for prettyprint parameters to routines which print
	467	things. */
	468	enum val_prettyprint {
	469	Val_no_prettyprint = 0,
	470	Val_prettyprint,
	471	/* Use the default setting which the user has specified. */
	472	Val_pretty_default
	473	};
	474
01be6913 PB	475	extern char *
	476	baseclass_addr PARAMS ((struct type type, int index, char valaddr,
	477	value valuep, int errp));
	478
	479	extern void
	480	print_floating PARAMS ((char valaddr, struct type type, FILE *stream));
	481
	482	extern int
	483	value_print PARAMS ((value val, FILE *stream, int format,
	484	enum val_prettyprint pretty));
	485
	486	extern int
	487	val_print PARAMS ((struct type type, char valaddr, CORE_ADDR address,
	488	FILE *stream, int format, int deref_ref,
	489	int recurse, enum val_prettyprint pretty));
	490
	491	/* FIXME: Assumes equivalence of "struct frame_info " and "FRAME" /
	492	extern void
	493	print_variable_value PARAMS ((struct symbol var, struct frame_info frame,
	494	FILE *stream));
	495
	496	extern value
	497	value_arg_coerce PARAMS ((value));
	498
	499	extern int
	500	check_field PARAMS ((value, const char *));
	501
	502	extern void
	503	typedef_print PARAMS ((struct type type, struct symbol new, FILE *stream));
	504
	505	extern char *
	506	internalvar_name PARAMS ((struct internalvar *var));
	507
	508	extern void
	509	clear_value_history PARAMS ((void));
	510
	511	extern void
	512	clear_internalvars PARAMS ((void));
	513
	514	/* From values.c */
	515
	516	extern value
	517	value_copy PARAMS ((value));
	518
	519	/* From valops.c */
bd5635a1	520
e17960fb	521	extern value
01be6913	522	call_function_by_hand PARAMS ((value, int, value *));
e17960fb	523
01be6913	524	#endif /* !defined (VALUE_H) */