[binutils.git] / gdb / value.h

/* Definitions for values of C expressions, for GDB.
   Copyright 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996
   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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;
    /* 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 internal 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.
       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
       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;

    /* ??? When is this used?  */
    union {
      CORE_ADDR memaddr;
      char *myaddr;
    } substring_addr;

    /* 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;
      LONGEST force_longlong_align;
      char *literal_data;
    } aligner;

  };

typedef struct value *value_ptr;

#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_ptr 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_REGNO(val) (val)->regno
#define VALUE_OPTIMIZED_OUT(val) ((val)->optimized_out)

/* Convert a REF to the object referenced. */

#define COERCE_REF(arg)    \
do { CHECK_TYPEDEF (VALUE_TYPE (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)));          \
} while (0)

/* 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)    \
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);                                  \
} 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)   { \
  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_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"
#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 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 DOUBLEST 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, DOUBLEST 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 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 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++ */

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,
					enum noside noside));

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,
					 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, 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 value_literal_complex PARAMS ((value_ptr, value_ptr, struct type*));

extern value_ptr find_function_in_inferior PARAMS ((char *));

extern value_ptr value_allocate_space_in_inferior PARAMS ((int));

#endif	/* !defined (VALUE_H) */
Commit	Line	Data
bd5635a1	1	/* Definitions for values of C expressions, for GDB.
b5865bb2 WM	2	Copyright 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996
b5865bb2 WM	3	Free Software Foundation, Inc.
bd5635a1 RP	4
	5	This file is part of GDB.
	6
e17960fb	7	This program is free software; you can redistribute it and/or modify
bd5635a1	8	it under the terms of the GNU General Public License as published by
e17960fb JG	9	the Free Software Foundation; either version 2 of the License, or
e17960fb JG	10	(at your option) any later version.
bd5635a1	11
e17960fb	12	This program is distributed in the hope that it will be useful,
bd5635a1 RP	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
e17960fb	18	along with this program; if not, write to the Free Software
b5865bb2	19	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
bd5635a1 RP	20
	21	#if !defined (VALUE_H)
	22	#define VALUE_H 1
01be6913	23
bd5635a1 RP	24	/*
	25	* The structure which defines the type of a value. It should never
	26	* be possible for a program lval value to survive over a call to the inferior
	27	* (ie to be put into the history list or an internal variable).
	28	*/
	29	enum lval_type {
	30	/* Not an lval. */
	31	not_lval,
	32	/* In memory. Could be a saved register. */
	33	lval_memory,
	34	/* In a register. */
	35	lval_register,
	36	/* In a gdb internal variable. */
	37	lval_internalvar,
	38	/* Part of a gdb internal variable (structure field). */
	39	lval_internalvar_component,
	40	/* In a register series in a frame not the current one, which may have been
	41	partially saved or saved in different places (otherwise would be
	42	lval_register or lval_memory). */
e17960fb	43	lval_reg_frame_relative
bd5635a1 RP	44	};
	45
	46	struct value
	47	{
	48	/* Type of value; either not an lval, or one of the various
	49	different possible kinds of lval. */
	50	enum lval_type lval;
30974778 JK	51	/* Is it modifiable? Only relevant if lval != not_lval. */
30974778 JK	52	int modifiable;
bd5635a1 RP	53	/* Location of value (if lval). */
	54	union
	55	{
	56	/* Address in inferior or byte of registers structure. */
	57	CORE_ADDR address;
35fcebce	58	/* Pointer to internal variable. */
bd5635a1 RP	59	struct internalvar *internalvar;
	60	/* Number of register. Only used with
	61	lval_reg_frame_relative. */
	62	int regnum;
	63	} location;
	64	/* Describes offset of a value within lval a structure in bytes. */
	65	int offset;
	66	/* Only used for bitfields; number of bits contained in them. */
	67	int bitsize;
35fcebce PB	68	/* Only used for bitfields; position of start of field.
	69	For BITS_BIG_ENDIAN=0 targets, it is the position of the LSB.
	70	For BITS_BIG_ENDIAN=1 targets, it is the position of the MSB. */
bd5635a1 RP	71	int bitpos;
	72	/* Frame value is relative to. In practice, this address is only
	73	used if the value is stored in several registers in other than
	74	the current frame, and these registers have not all been saved
	75	at the same place in memory. This will be described in the
	76	lval enum above as "lval_reg_frame_relative". */
	77	CORE_ADDR frame_addr;
	78	/* Type of the value. */
	79	struct type *type;
	80	/* Values are stored in a chain, so that they can be deleted
	81	easily over calls to the inferior. Values assigned to internal
	82	variables or put into the value history are taken off this
	83	list. */
	84	struct value *next;
ff87df19 JK	85
	86	/* ??? When is this used? */
	87	union {
	88	CORE_ADDR memaddr;
	89	char *myaddr;
	90	} substring_addr;
	91
bd5635a1 RP	92	/* Register number if the value is from a register. Is not kept
	93	if you take a field of a structure that is stored in a
	94	register. Shouldn't it be? */
	95	short regno;
	96	/* If zero, contents of this value are in the contents field.
	97	If nonzero, contents are in inferior memory at address
	98	in the location.address field plus the offset field
	99	(and the lval field should be lval_memory). */
	100	char lazy;
	101	/* If nonzero, this is the value of a variable which does not
	102	actually exist in the program. */
	103	char optimized_out;
	104	/* Actual contents of the value. For use of this value; setting
	105	it uses the stuff above. Not valid if lazy is nonzero.
	106	Target byte-order. We force it to be aligned properly for any
	107	possible value. */
	108	union {
	109	long contents[1];
	110	double force_double_align;
30974778	111	LONGEST force_longlong_align;
ff87df19	112	char *literal_data;
bd5635a1 RP	113	} aligner;
	114
	115	};
	116
82a2edfb	117	typedef struct value *value_ptr;
bd5635a1 RP	118
	119	#define VALUE_TYPE(val) (val)->type
	120	#define VALUE_LAZY(val) (val)->lazy
	121	/* VALUE_CONTENTS and VALUE_CONTENTS_RAW both return the address of
	122	the gdb buffer used to hold a copy of the contents of the lval.
	123	VALUE_CONTENTS is used when the contents of the buffer are needed --
	124	it uses value_fetch_lazy() to load the buffer from the process being
	125	debugged if it hasn't already been loaded. VALUE_CONTENTS_RAW is
	126	used when data is being stored into the buffer, or when it is
	127	certain that the contents of the buffer are valid. */
	128	#define VALUE_CONTENTS_RAW(val) ((char *) (val)->aligner.contents)
	129	#define VALUE_CONTENTS(val) ((void)(VALUE_LAZY(val) && value_fetch_lazy(val)),\
	130	VALUE_CONTENTS_RAW(val))
82a2edfb	131	extern int value_fetch_lazy PARAMS ((value_ptr val));
01be6913	132
bd5635a1 RP	133	#define VALUE_LVAL(val) (val)->lval
	134	#define VALUE_ADDRESS(val) (val)->location.address
	135	#define VALUE_INTERNALVAR(val) (val)->location.internalvar
	136	#define VALUE_FRAME_REGNUM(val) ((val)->location.regnum)
	137	#define VALUE_FRAME(val) ((val)->frame_addr)
	138	#define VALUE_OFFSET(val) (val)->offset
	139	#define VALUE_BITSIZE(val) (val)->bitsize
	140	#define VALUE_BITPOS(val) (val)->bitpos
	141	#define VALUE_NEXT(val) (val)->next
bd5635a1 RP	142	#define VALUE_REGNO(val) (val)->regno
	143	#define VALUE_OPTIMIZED_OUT(val) ((val)->optimized_out)
	144
	145	/* Convert a REF to the object referenced. */
	146
	147	#define COERCE_REF(arg) \
b5865bb2 WM	148	do { CHECK_TYPEDEF (VALUE_TYPE (arg)); \
	149	if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_REF) \
	150	arg = value_at_lazy (TYPE_TARGET_TYPE (VALUE_TYPE (arg)), \
	151	unpack_long (VALUE_TYPE (arg), \
	152	VALUE_CONTENTS (arg))); \
	153	} while (0)
bd5635a1 RP	154
	155	/* If ARG is an array, convert it to a pointer.
	156	If ARG is an enum, convert it to an integer.
	157	If ARG is a function, convert it to a function pointer.
	158
	159	References are dereferenced. */
	160
	161	#define COERCE_ARRAY(arg) \
b5865bb2	162	do { COERCE_REF(arg); \
f91a9e05	163	if (current_language->c_style_arrays \
b5865bb2	164	&& TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ARRAY) \
bd5635a1 RP	165	arg = value_coerce_array (arg); \
	166	if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_FUNC) \
	167	arg = value_coerce_function (arg); \
b5865bb2 WM	168	} while (0)
	169
	170	#define COERCE_NUMBER(arg) \
	171	do { COERCE_ARRAY(arg); COERCE_ENUM(arg); } while (0)
bd5635a1	172
b5865bb2 WM	173	#define COERCE_VARYING_ARRAY(arg, real_arg_type) \
	174	{ if (chill_varying_type (real_arg_type)) \
	175	arg = varying_to_slice (arg), real_arg_type = VALUE_TYPE (arg); }
f91a9e05	176
bd5635a1 RP	177	/* If ARG is an enum, convert it to an integer. */
bd5635a1 RP	178
b5865bb2	179	#define COERCE_ENUM(arg) { \
bd5635a1 RP	180	if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ENUM) \
	181	arg = value_cast (builtin_type_unsigned_int, arg); \
	182	}
	183
	184	/* Internal variables (variables for convenience of use of debugger)
	185	are recorded as a chain of these structures. */
	186
	187	struct internalvar
	188	{
	189	struct internalvar *next;
	190	char *name;
82a2edfb	191	value_ptr value;
bd5635a1	192	};
01be6913	193
35fcebce PB	194	/* Pointer to member function. Depends on compiler implementation. */
	195
	196	#define METHOD_PTR_IS_VIRTUAL(ADDR) ((ADDR) & 0x80000000)
	197	#define METHOD_PTR_FROM_VOFFSET(OFFSET) (0x80000000 + (OFFSET))
	198	#define METHOD_PTR_TO_VOFFSET(ADDR) (~0x80000000 & (ADDR))
	199
bd5635a1 RP	200	\f
bd5635a1 RP	201	#include "symtab.h"
01be6913 PB	202	#include "gdbtypes.h"
	203	#include "expression.h"
	204
e17960fb	205	#ifdef __STDC__
01be6913	206	struct frame_info;
c7da3ed3	207	struct fn_field;
e17960fb	208	#endif
01be6913 PB	209
01be6913 PB	210	extern void
30974778	211	print_address_demangle PARAMS ((CORE_ADDR, GDB_FILE *, int));
01be6913	212
82a2edfb	213	extern LONGEST value_as_long PARAMS ((value_ptr val));
01be6913	214
b5865bb2	215	extern DOUBLEST value_as_double PARAMS ((value_ptr val));
01be6913	216
82a2edfb	217	extern CORE_ADDR value_as_pointer PARAMS ((value_ptr val));
01be6913	218
82a2edfb	219	extern LONGEST unpack_long PARAMS ((struct type type, char valaddr));
01be6913	220
b5865bb2 WM	221	extern DOUBLEST unpack_double PARAMS ((struct type type, char valaddr,
b5865bb2 WM	222	int *invp));
01be6913	223
5573d7d4	224	extern CORE_ADDR unpack_pointer PARAMS ((struct type type, char valaddr));
01be6913	225
5573d7d4 JK	226	extern LONGEST unpack_field_as_long PARAMS ((struct type type, char valaddr,
5573d7d4 JK	227	int fieldno));
01be6913	228
82a2edfb	229	extern value_ptr value_from_longest PARAMS ((struct type *type, LONGEST num));
01be6913	230
b5865bb2	231	extern value_ptr value_from_double PARAMS ((struct type *type, DOUBLEST num));
01be6913	232
82a2edfb	233	extern value_ptr value_at PARAMS ((struct type *type, CORE_ADDR addr));
01be6913	234
82a2edfb	235	extern value_ptr value_at_lazy PARAMS ((struct type *type, CORE_ADDR addr));
01be6913	236
82a2edfb	237	extern value_ptr value_from_register PARAMS ((struct type *type, int regnum,
5573d7d4	238	struct frame_info * frame));
01be6913	239
82a2edfb JK	240	extern value_ptr value_of_variable PARAMS ((struct symbol *var,
82a2edfb JK	241	struct block *b));
01be6913	242
82a2edfb	243	extern value_ptr value_of_register PARAMS ((int regnum));
01be6913	244
30974778 JK	245	extern int symbol_read_needs_frame PARAMS ((struct symbol *));
30974778 JK	246
82a2edfb JK	247	extern value_ptr read_var_value PARAMS ((struct symbol *var,
82a2edfb JK	248	struct frame_info *frame));
01be6913	249
82a2edfb	250	extern value_ptr locate_var_value PARAMS ((struct symbol *var,
5573d7d4	251	struct frame_info *frame));
01be6913	252
82a2edfb	253	extern value_ptr allocate_value PARAMS ((struct type *type));
01be6913	254
82a2edfb	255	extern value_ptr allocate_repeat_value PARAMS ((struct type *type, int count));
01be6913	256
82a2edfb	257	extern value_ptr value_mark PARAMS ((void));
01be6913	258
82a2edfb	259	extern void value_free_to_mark PARAMS ((value_ptr mark));
01be6913	260
82a2edfb	261	extern value_ptr value_string PARAMS ((char *ptr, int len));
6d34c236	262	extern value_ptr value_bitstring PARAMS ((char *ptr, int len));
01be6913	263
82a2edfb JK	264	extern value_ptr value_array PARAMS ((int lowbound, int highbound,
82a2edfb JK	265	value_ptr *elemvec));
7efb57c3	266
82a2edfb	267	extern value_ptr value_concat PARAMS ((value_ptr arg1, value_ptr arg2));
7efb57c3	268
82a2edfb JK	269	extern value_ptr value_binop PARAMS ((value_ptr arg1, value_ptr arg2,
82a2edfb JK	270	enum exp_opcode op));
01be6913	271
82a2edfb	272	extern value_ptr value_add PARAMS ((value_ptr arg1, value_ptr arg2));
01be6913	273
82a2edfb	274	extern value_ptr value_sub PARAMS ((value_ptr arg1, value_ptr arg2));
01be6913	275
82a2edfb	276	extern value_ptr value_coerce_array PARAMS ((value_ptr arg1));
01be6913	277
82a2edfb	278	extern value_ptr value_coerce_function PARAMS ((value_ptr arg1));
01be6913	279
82a2edfb	280	extern value_ptr value_ind PARAMS ((value_ptr arg1));
01be6913	281
82a2edfb	282	extern value_ptr value_addr PARAMS ((value_ptr arg1));
01be6913	283
82a2edfb	284	extern value_ptr value_assign PARAMS ((value_ptr toval, value_ptr fromval));
01be6913	285
82a2edfb	286	extern value_ptr value_neg PARAMS ((value_ptr arg1));
01be6913	287
82a2edfb	288	extern value_ptr value_complement PARAMS ((value_ptr arg1));
01be6913	289
999dd04b	290	extern value_ptr value_struct_elt PARAMS ((value_ptr argp, value_ptr args,
82a2edfb JK	291	char *name,
82a2edfb JK	292	int static_memfuncp, char err));
01be6913	293
82a2edfb JK	294	extern value_ptr value_struct_elt_for_reference PARAMS ((struct type *domain,
	295	int offset,
	296	struct type *curtype,
	297	char *name,
	298	struct type *intype));
01be6913	299
82a2edfb	300	extern value_ptr value_field PARAMS ((value_ptr arg1, int fieldno));
01be6913	301
82a2edfb JK	302	extern value_ptr value_primitive_field PARAMS ((value_ptr arg1, int offset,
	303	int fieldno,
	304	struct type *arg_type));
01be6913	305
82a2edfb	306	extern value_ptr value_cast PARAMS ((struct type *type, value_ptr arg2));
01be6913	307
82a2edfb	308	extern value_ptr value_zero PARAMS ((struct type *type, enum lval_type lv));
01be6913	309
82a2edfb	310	extern value_ptr value_repeat PARAMS ((value_ptr arg1, int count));
01be6913	311
82a2edfb	312	extern value_ptr value_subscript PARAMS ((value_ptr array, value_ptr idx));
01be6913	313
82a2edfb JK	314	extern value_ptr value_from_vtable_info PARAMS ((value_ptr arg,
82a2edfb JK	315	struct type *type));
01be6913	316
82a2edfb JK	317	extern value_ptr value_being_returned PARAMS ((struct type *valtype,
	318	char retbuf[REGISTER_BYTES],
	319	int struct_return));
01be6913	320
82a2edfb	321	extern value_ptr value_in PARAMS ((value_ptr element, value_ptr set));
30974778 JK	322
	323	extern int value_bit_index PARAMS ((struct type type, char addr, int index));
	324
82a2edfb JK	325	extern int using_struct_return PARAMS ((value_ptr function, CORE_ADDR funcaddr,
82a2edfb JK	326	struct type *value_type, int gcc_p));
01be6913	327
82a2edfb	328	extern void set_return_value PARAMS ((value_ptr val));
01be6913	329
82a2edfb	330	extern value_ptr evaluate_expression PARAMS ((struct expression *exp));
01be6913	331
82a2edfb	332	extern value_ptr evaluate_type PARAMS ((struct expression *exp));
01be6913	333
b5865bb2 WM	334	extern value_ptr evaluate_subexp_with_coercion PARAMS ((struct expression *,
	335	int *, enum noside));
	336
82a2edfb	337	extern value_ptr parse_and_eval PARAMS ((char *exp));
01be6913	338
82a2edfb	339	extern value_ptr parse_to_comma_and_eval PARAMS ((char **expp));
01be6913	340
82a2edfb	341	extern struct type parse_and_eval_type PARAMS ((char p, int length));
01be6913	342
82a2edfb	343	extern CORE_ADDR parse_and_eval_address PARAMS ((char *exp));
01be6913	344
82a2edfb	345	extern CORE_ADDR parse_and_eval_address_1 PARAMS ((char **expptr));
01be6913	346
82a2edfb	347	extern value_ptr access_value_history PARAMS ((int num));
01be6913	348
82a2edfb	349	extern value_ptr value_of_internalvar PARAMS ((struct internalvar *var));
01be6913	350
82a2edfb	351	extern void set_internalvar PARAMS ((struct internalvar *var, value_ptr val));
01be6913	352
82a2edfb JK	353	extern void set_internalvar_component PARAMS ((struct internalvar *var,
	354	int offset,
	355	int bitpos, int bitsize,
	356	value_ptr newvalue));
01be6913	357
82a2edfb	358	extern struct internalvar lookup_internalvar PARAMS ((char name));
01be6913	359
82a2edfb	360	extern int value_equal PARAMS ((value_ptr arg1, value_ptr arg2));
01be6913	361
82a2edfb	362	extern int value_less PARAMS ((value_ptr arg1, value_ptr arg2));
01be6913	363
82a2edfb	364	extern int value_logical_not PARAMS ((value_ptr arg1));
bd5635a1 RP	365
bd5635a1 RP	366	/* C++ */
01be6913	367
82a2edfb	368	extern value_ptr value_of_this PARAMS ((int complain));
01be6913	369
82a2edfb JK	370	extern value_ptr value_x_binop PARAMS ((value_ptr arg1, value_ptr arg2,
82a2edfb JK	371	enum exp_opcode op,
b5865bb2 WM	372	enum exp_opcode otherop,
b5865bb2 WM	373	enum noside noside));
01be6913	374
b5865bb2 WM	375	extern value_ptr value_x_unop PARAMS ((value_ptr arg1, enum exp_opcode op,
b5865bb2 WM	376	enum noside noside));
01be6913	377
82a2edfb JK	378	extern value_ptr value_fn_field PARAMS ((value_ptr arg1p, struct fn_field f,
	379	int j,
	380	struct type* type, int offset));
01be6913	381
82a2edfb JK	382	extern value_ptr value_virtual_fn_field PARAMS ((value_ptr *arg1p,
	383	struct fn_field *f, int j,
	384	struct type *type,
	385	int offset));
01be6913	386
82a2edfb JK	387	extern int binop_user_defined_p PARAMS ((enum exp_opcode op,
82a2edfb JK	388	value_ptr arg1, value_ptr arg2));
01be6913	389
82a2edfb	390	extern int unop_user_defined_p PARAMS ((enum exp_opcode op, value_ptr arg1));
01be6913	391
82a2edfb JK	392	extern int destructor_name_p PARAMS ((const char *name,
82a2edfb JK	393	const struct type *type));
bd5635a1	394
35fcebce	395	#define value_free(val) free ((PTR)val)
01be6913	396
82a2edfb	397	extern void free_all_values PARAMS ((void));
01be6913	398
82a2edfb	399	extern void release_value PARAMS ((value_ptr val));
01be6913	400
82a2edfb	401	extern int record_latest_value PARAMS ((value_ptr val));
01be6913	402
82a2edfb	403	extern void registers_changed PARAMS ((void));
01be6913	404
82a2edfb	405	extern void read_register_bytes PARAMS ((int regbyte, char *myaddr, int len));
01be6913	406
82a2edfb	407	extern void write_register_bytes PARAMS ((int regbyte, char *myaddr, int len));
01be6913 PB	408
	409	extern void
	410	read_register_gen PARAMS ((int regno, char *myaddr));
	411
	412	extern CORE_ADDR
	413	read_register PARAMS ((int regno));
	414
	415	extern void
30974778	416	write_register PARAMS ((int regno, LONGEST val));
01be6913 PB	417
	418	extern void
	419	supply_register PARAMS ((int regno, char *val));
	420
01be6913 PB	421	extern void
	422	get_saved_register PARAMS ((char raw_buffer, int optimized,
	423	CORE_ADDR addrp, struct frame_info frame,
	424	int regnum, enum lval_type *lval));
	425
	426	extern void
5573d7d4	427	modify_field PARAMS ((char *addr, LONGEST fieldval, int bitpos, int bitsize));
01be6913 PB	428
01be6913 PB	429	extern void
30974778	430	type_print PARAMS ((struct type type, char varstring, GDB_FILE *stream,
01be6913 PB	431	int show));
01be6913 PB	432
82a2edfb JK	433	extern char baseclass_addr PARAMS ((struct type type, int index,
	434	char *valaddr,
	435	value_ptr valuep, int errp));
01be6913	436
7efb57c3	437	extern void
30974778 JK	438	print_longest PARAMS ((GDB_FILE *stream, int format, int use_local,
30974778 JK	439	LONGEST val));
7efb57c3	440
01be6913	441	extern void
30974778	442	print_floating PARAMS ((char valaddr, struct type type, GDB_FILE *stream));
01be6913	443
82a2edfb JK	444	extern int value_print PARAMS ((value_ptr val, GDB_FILE *stream, int format,
82a2edfb JK	445	enum val_prettyprint pretty));
01be6913	446
a91a6192 SS	447	extern void
	448	value_print_array_elements PARAMS ((value_ptr val, GDB_FILE* stream,
	449	int format, enum val_prettyprint pretty));
	450
999dd04b JL	451	extern value_ptr
	452	value_release_to_mark PARAMS ((value_ptr mark));
	453
01be6913 PB	454	extern int
01be6913 PB	455	val_print PARAMS ((struct type type, char valaddr, CORE_ADDR address,
30974778	456	GDB_FILE *stream, int format, int deref_ref,
01be6913 PB	457	int recurse, enum val_prettyprint pretty));
01be6913 PB	458
c7da3ed3	459	extern int
30974778	460	val_print_string PARAMS ((CORE_ADDR addr, unsigned int len, GDB_FILE *stream));
c7da3ed3	461
01be6913 PB	462	extern void
01be6913 PB	463	print_variable_value PARAMS ((struct symbol var, struct frame_info frame,
30974778	464	GDB_FILE *stream));
01be6913	465
82a2edfb	466	extern int check_field PARAMS ((value_ptr, const char *));
01be6913 PB	467
01be6913 PB	468	extern void
6d34c236	469	c_typedef_print PARAMS ((struct type type, struct symbol news, GDB_FILE *stream));
01be6913 PB	470
	471	extern char *
	472	internalvar_name PARAMS ((struct internalvar *var));
	473
	474	extern void
	475	clear_value_history PARAMS ((void));
	476
	477	extern void
	478	clear_internalvars PARAMS ((void));
	479
	480	/* From values.c */
	481
82a2edfb	482	extern value_ptr value_copy PARAMS ((value_ptr));
01be6913	483
b5865bb2	484	extern int baseclass_offset PARAMS ((struct type , int, char , CORE_ADDR));
c7da3ed3	485
01be6913	486	/* From valops.c */
bd5635a1	487
f91a9e05 PB	488	extern value_ptr varying_to_slice PARAMS ((value_ptr));
	489
	490	extern value_ptr value_slice PARAMS ((value_ptr, int, int));
	491
82a2edfb	492	extern value_ptr call_function_by_hand PARAMS ((value_ptr, int, value_ptr *));
e17960fb	493
5222ca60	494	extern value_ptr value_literal_complex PARAMS ((value_ptr, value_ptr, struct type*));
a91a6192	495
b5865bb2 WM	496	extern value_ptr find_function_in_inferior PARAMS ((char *));
	497
	498	extern value_ptr value_allocate_space_in_inferior PARAMS ((int));
	499
01be6913	500	#endif /* !defined (VALUE_H) */