1 /* Perform arithmetic and other operations on values, for GDB.
3 Copyright (C) 1986-2020 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
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.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "expression.h"
27 #include "target-float.h"
29 #include "gdbsupport/byte-vector.h"
32 /* Define whether or not the C operator '/' truncates towards zero for
33 differently signed operands (truncation direction is undefined in C). */
35 #ifndef TRUNCATION_TOWARDS_ZERO
36 #define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2)
39 /* Given a pointer, return the size of its target.
40 If the pointer type is void *, then return 1.
41 If the target type is incomplete, then error out.
42 This isn't a general purpose function, but just a
43 helper for value_ptradd. */
46 find_size_for_pointer_math (struct type
*ptr_type
)
49 struct type
*ptr_target
;
51 gdb_assert (ptr_type
->code () == TYPE_CODE_PTR
);
52 ptr_target
= check_typedef (TYPE_TARGET_TYPE (ptr_type
));
54 sz
= type_length_units (ptr_target
);
57 if (ptr_type
->code () == TYPE_CODE_VOID
)
63 name
= ptr_target
->name ();
65 error (_("Cannot perform pointer math on incomplete types, "
66 "try casting to a known type, or void *."));
68 error (_("Cannot perform pointer math on incomplete type \"%s\", "
69 "try casting to a known type, or void *."), name
);
75 /* Given a pointer ARG1 and an integral value ARG2, return the
76 result of C-style pointer arithmetic ARG1 + ARG2. */
79 value_ptradd (struct value
*arg1
, LONGEST arg2
)
81 struct type
*valptrtype
;
85 arg1
= coerce_array (arg1
);
86 valptrtype
= check_typedef (value_type (arg1
));
87 sz
= find_size_for_pointer_math (valptrtype
);
89 result
= value_from_pointer (valptrtype
,
90 value_as_address (arg1
) + sz
* arg2
);
91 if (VALUE_LVAL (result
) != lval_internalvar
)
92 set_value_component_location (result
, arg1
);
96 /* Given two compatible pointer values ARG1 and ARG2, return the
97 result of C-style pointer arithmetic ARG1 - ARG2. */
100 value_ptrdiff (struct value
*arg1
, struct value
*arg2
)
102 struct type
*type1
, *type2
;
105 arg1
= coerce_array (arg1
);
106 arg2
= coerce_array (arg2
);
107 type1
= check_typedef (value_type (arg1
));
108 type2
= check_typedef (value_type (arg2
));
110 gdb_assert (type1
->code () == TYPE_CODE_PTR
);
111 gdb_assert (type2
->code () == TYPE_CODE_PTR
);
113 if (TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (type1
)))
114 != TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (type2
))))
115 error (_("First argument of `-' is a pointer and "
116 "second argument is neither\n"
117 "an integer nor a pointer of the same type."));
119 sz
= type_length_units (check_typedef (TYPE_TARGET_TYPE (type1
)));
122 warning (_("Type size unknown, assuming 1. "
123 "Try casting to a known type, or void *."));
127 return (value_as_long (arg1
) - value_as_long (arg2
)) / sz
;
130 /* Return the value of ARRAY[IDX].
132 ARRAY may be of type TYPE_CODE_ARRAY or TYPE_CODE_STRING. If the
133 current language supports C-style arrays, it may also be TYPE_CODE_PTR.
135 See comments in value_coerce_array() for rationale for reason for
136 doing lower bounds adjustment here rather than there.
137 FIXME: Perhaps we should validate that the index is valid and if
138 verbosity is set, warn about invalid indices (but still use them). */
141 value_subscript (struct value
*array
, LONGEST index
)
143 bool c_style
= current_language
->c_style_arrays_p ();
146 array
= coerce_ref (array
);
147 tarray
= check_typedef (value_type (array
));
149 if (tarray
->code () == TYPE_CODE_ARRAY
150 || tarray
->code () == TYPE_CODE_STRING
)
152 struct type
*range_type
= tarray
->index_type ();
153 LONGEST lowerbound
, upperbound
;
155 get_discrete_bounds (range_type
, &lowerbound
, &upperbound
);
156 if (VALUE_LVAL (array
) != lval_memory
)
157 return value_subscripted_rvalue (array
, index
, lowerbound
);
161 if (index
>= lowerbound
&& index
<= upperbound
)
162 return value_subscripted_rvalue (array
, index
, lowerbound
);
163 /* Emit warning unless we have an array of unknown size.
164 An array of unknown size has lowerbound 0 and upperbound -1. */
166 warning (_("array or string index out of range"));
167 /* fall doing C stuff */
172 array
= value_coerce_array (array
);
176 return value_ind (value_ptradd (array
, index
));
178 error (_("not an array or string"));
181 /* Return the value of EXPR[IDX], expr an aggregate rvalue
182 (eg, a vector register). This routine used to promote floats
183 to doubles, but no longer does. */
186 value_subscripted_rvalue (struct value
*array
, LONGEST index
, LONGEST lowerbound
)
188 struct type
*array_type
= check_typedef (value_type (array
));
189 struct type
*elt_type
= check_typedef (TYPE_TARGET_TYPE (array_type
));
190 LONGEST elt_size
= type_length_units (elt_type
);
192 /* Fetch the bit stride and convert it to a byte stride, assuming 8 bits
194 LONGEST stride
= array_type
->bit_stride ();
197 struct gdbarch
*arch
= get_type_arch (elt_type
);
198 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
199 elt_size
= stride
/ (unit_size
* 8);
202 LONGEST elt_offs
= elt_size
* (index
- lowerbound
);
203 bool array_upper_bound_undefined
204 = array_type
->bounds ()->high
.kind () == PROP_UNDEFINED
;
206 if (index
< lowerbound
207 || (!array_upper_bound_undefined
208 && elt_offs
>= type_length_units (array_type
))
209 || (VALUE_LVAL (array
) != lval_memory
&& array_upper_bound_undefined
))
211 if (type_not_associated (array_type
))
212 error (_("no such vector element (vector not associated)"));
213 else if (type_not_allocated (array_type
))
214 error (_("no such vector element (vector not allocated)"));
216 error (_("no such vector element"));
219 if (is_dynamic_type (elt_type
))
223 address
= value_address (array
) + elt_offs
;
224 elt_type
= resolve_dynamic_type (elt_type
, {}, address
);
227 return value_from_component (array
, elt_type
, elt_offs
);
231 /* Check to see if either argument is a structure, or a reference to
232 one. This is called so we know whether to go ahead with the normal
233 binop or look for a user defined function instead.
235 For now, we do not overload the `=' operator. */
238 binop_types_user_defined_p (enum exp_opcode op
,
239 struct type
*type1
, struct type
*type2
)
241 if (op
== BINOP_ASSIGN
|| op
== BINOP_CONCAT
)
244 type1
= check_typedef (type1
);
245 if (TYPE_IS_REFERENCE (type1
))
246 type1
= check_typedef (TYPE_TARGET_TYPE (type1
));
248 type2
= check_typedef (type2
);
249 if (TYPE_IS_REFERENCE (type2
))
250 type2
= check_typedef (TYPE_TARGET_TYPE (type2
));
252 return (type1
->code () == TYPE_CODE_STRUCT
253 || type2
->code () == TYPE_CODE_STRUCT
);
256 /* Check to see if either argument is a structure, or a reference to
257 one. This is called so we know whether to go ahead with the normal
258 binop or look for a user defined function instead.
260 For now, we do not overload the `=' operator. */
263 binop_user_defined_p (enum exp_opcode op
,
264 struct value
*arg1
, struct value
*arg2
)
266 return binop_types_user_defined_p (op
, value_type (arg1
), value_type (arg2
));
269 /* Check to see if argument is a structure. This is called so
270 we know whether to go ahead with the normal unop or look for a
271 user defined function instead.
273 For now, we do not overload the `&' operator. */
276 unop_user_defined_p (enum exp_opcode op
, struct value
*arg1
)
282 type1
= check_typedef (value_type (arg1
));
283 if (TYPE_IS_REFERENCE (type1
))
284 type1
= check_typedef (TYPE_TARGET_TYPE (type1
));
285 return type1
->code () == TYPE_CODE_STRUCT
;
288 /* Try to find an operator named OPERATOR which takes NARGS arguments
289 specified in ARGS. If the operator found is a static member operator
290 *STATIC_MEMFUNP will be set to 1, and otherwise 0.
291 The search if performed through find_overload_match which will handle
292 member operators, non member operators, operators imported implicitly or
293 explicitly, and perform correct overload resolution in all of the above
294 situations or combinations thereof. */
296 static struct value
*
297 value_user_defined_cpp_op (gdb::array_view
<value
*> args
, char *oper
,
298 int *static_memfuncp
, enum noside noside
)
301 struct symbol
*symp
= NULL
;
302 struct value
*valp
= NULL
;
304 find_overload_match (args
, oper
, BOTH
/* could be method */,
306 NULL
/* pass NULL symbol since symbol is unknown */,
307 &valp
, &symp
, static_memfuncp
, 0, noside
);
314 /* This is a non member function and does not
315 expect a reference as its first argument
316 rather the explicit structure. */
317 args
[0] = value_ind (args
[0]);
318 return value_of_variable (symp
, 0);
321 error (_("Could not find %s."), oper
);
324 /* Lookup user defined operator NAME. Return a value representing the
325 function, otherwise return NULL. */
327 static struct value
*
328 value_user_defined_op (struct value
**argp
, gdb::array_view
<value
*> args
,
329 char *name
, int *static_memfuncp
, enum noside noside
)
331 struct value
*result
= NULL
;
333 if (current_language
->la_language
== language_cplus
)
335 result
= value_user_defined_cpp_op (args
, name
, static_memfuncp
,
339 result
= value_struct_elt (argp
, args
.data (), name
, static_memfuncp
,
345 /* We know either arg1 or arg2 is a structure, so try to find the right
346 user defined function. Create an argument vector that calls
347 arg1.operator @ (arg1,arg2) and return that value (where '@' is any
348 binary operator which is legal for GNU C++).
350 OP is the operator, and if it is BINOP_ASSIGN_MODIFY, then OTHEROP
351 is the opcode saying how to modify it. Otherwise, OTHEROP is
355 value_x_binop (struct value
*arg1
, struct value
*arg2
, enum exp_opcode op
,
356 enum exp_opcode otherop
, enum noside noside
)
362 arg1
= coerce_ref (arg1
);
363 arg2
= coerce_ref (arg2
);
365 /* now we know that what we have to do is construct our
366 arg vector and find the right function to call it with. */
368 if (check_typedef (value_type (arg1
))->code () != TYPE_CODE_STRUCT
)
369 error (_("Can't do that binary op on that type")); /* FIXME be explicit */
371 value
*argvec_storage
[3];
372 gdb::array_view
<value
*> argvec
= argvec_storage
;
374 argvec
[1] = value_addr (arg1
);
377 /* Make the right function name up. */
378 strcpy (tstr
, "operator__");
403 case BINOP_BITWISE_AND
:
406 case BINOP_BITWISE_IOR
:
409 case BINOP_BITWISE_XOR
:
412 case BINOP_LOGICAL_AND
:
415 case BINOP_LOGICAL_OR
:
427 case BINOP_ASSIGN_MODIFY
:
445 case BINOP_BITWISE_AND
:
448 case BINOP_BITWISE_IOR
:
451 case BINOP_BITWISE_XOR
:
454 case BINOP_MOD
: /* invalid */
456 error (_("Invalid binary operation specified."));
459 case BINOP_SUBSCRIPT
:
480 case BINOP_MOD
: /* invalid */
482 error (_("Invalid binary operation specified."));
485 argvec
[0] = value_user_defined_op (&arg1
, argvec
.slice (1), tstr
,
486 &static_memfuncp
, noside
);
492 argvec
[1] = argvec
[0];
493 argvec
= argvec
.slice (1);
495 if (value_type (argvec
[0])->code () == TYPE_CODE_XMETHOD
)
497 /* Static xmethods are not supported yet. */
498 gdb_assert (static_memfuncp
== 0);
499 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
501 struct type
*return_type
502 = result_type_of_xmethod (argvec
[0], argvec
.slice (1));
504 if (return_type
== NULL
)
505 error (_("Xmethod is missing return type."));
506 return value_zero (return_type
, VALUE_LVAL (arg1
));
508 return call_xmethod (argvec
[0], argvec
.slice (1));
510 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
512 struct type
*return_type
;
515 = TYPE_TARGET_TYPE (check_typedef (value_type (argvec
[0])));
516 return value_zero (return_type
, VALUE_LVAL (arg1
));
518 return call_function_by_hand (argvec
[0], NULL
,
519 argvec
.slice (1, 2 - static_memfuncp
));
521 throw_error (NOT_FOUND_ERROR
,
522 _("member function %s not found"), tstr
);
525 /* We know that arg1 is a structure, so try to find a unary user
526 defined operator that matches the operator in question.
527 Create an argument vector that calls arg1.operator @ (arg1)
528 and return that value (where '@' is (almost) any unary operator which
529 is legal for GNU C++). */
532 value_x_unop (struct value
*arg1
, enum exp_opcode op
, enum noside noside
)
534 struct gdbarch
*gdbarch
= get_type_arch (value_type (arg1
));
536 char tstr
[13], mangle_tstr
[13];
537 int static_memfuncp
, nargs
;
539 arg1
= coerce_ref (arg1
);
541 /* now we know that what we have to do is construct our
542 arg vector and find the right function to call it with. */
544 if (check_typedef (value_type (arg1
))->code () != TYPE_CODE_STRUCT
)
545 error (_("Can't do that unary op on that type")); /* FIXME be explicit */
547 value
*argvec_storage
[3];
548 gdb::array_view
<value
*> argvec
= argvec_storage
;
550 argvec
[1] = value_addr (arg1
);
555 /* Make the right function name up. */
556 strcpy (tstr
, "operator__");
558 strcpy (mangle_tstr
, "__");
561 case UNOP_PREINCREMENT
:
564 case UNOP_PREDECREMENT
:
567 case UNOP_POSTINCREMENT
:
569 argvec
[2] = value_from_longest (builtin_type (gdbarch
)->builtin_int
, 0);
572 case UNOP_POSTDECREMENT
:
574 argvec
[2] = value_from_longest (builtin_type (gdbarch
)->builtin_int
, 0);
577 case UNOP_LOGICAL_NOT
:
580 case UNOP_COMPLEMENT
:
596 error (_("Invalid unary operation specified."));
599 argvec
[0] = value_user_defined_op (&arg1
, argvec
.slice (1, nargs
), tstr
,
600 &static_memfuncp
, noside
);
606 argvec
[1] = argvec
[0];
607 argvec
= argvec
.slice (1);
609 if (value_type (argvec
[0])->code () == TYPE_CODE_XMETHOD
)
611 /* Static xmethods are not supported yet. */
612 gdb_assert (static_memfuncp
== 0);
613 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
615 struct type
*return_type
616 = result_type_of_xmethod (argvec
[0], argvec
[1]);
618 if (return_type
== NULL
)
619 error (_("Xmethod is missing return type."));
620 return value_zero (return_type
, VALUE_LVAL (arg1
));
622 return call_xmethod (argvec
[0], argvec
[1]);
624 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
626 struct type
*return_type
;
629 = TYPE_TARGET_TYPE (check_typedef (value_type (argvec
[0])));
630 return value_zero (return_type
, VALUE_LVAL (arg1
));
632 return call_function_by_hand (argvec
[0], NULL
,
633 argvec
.slice (1, nargs
));
635 throw_error (NOT_FOUND_ERROR
,
636 _("member function %s not found"), tstr
);
640 /* Concatenate two values with the following conditions:
642 (1) Both values must be either bitstring values or character string
643 values and the resulting value consists of the concatenation of
644 ARG1 followed by ARG2.
648 One value must be an integer value and the other value must be
649 either a bitstring value or character string value, which is
650 to be repeated by the number of times specified by the integer
654 (2) Boolean values are also allowed and are treated as bit string
657 (3) Character values are also allowed and are treated as character
658 string values of length 1. */
661 value_concat (struct value
*arg1
, struct value
*arg2
)
663 struct value
*inval1
;
664 struct value
*inval2
;
665 struct value
*outval
= NULL
;
666 int inval1len
, inval2len
;
669 struct type
*type1
= check_typedef (value_type (arg1
));
670 struct type
*type2
= check_typedef (value_type (arg2
));
671 struct type
*char_type
;
673 /* First figure out if we are dealing with two values to be concatenated
674 or a repeat count and a value to be repeated. INVAL1 is set to the
675 first of two concatenated values, or the repeat count. INVAL2 is set
676 to the second of the two concatenated values or the value to be
679 if (type2
->code () == TYPE_CODE_INT
)
681 struct type
*tmp
= type1
;
694 /* Now process the input values. */
696 if (type1
->code () == TYPE_CODE_INT
)
698 /* We have a repeat count. Validate the second value and then
699 construct a value repeated that many times. */
700 if (type2
->code () == TYPE_CODE_STRING
701 || type2
->code () == TYPE_CODE_CHAR
)
703 count
= longest_to_int (value_as_long (inval1
));
704 inval2len
= TYPE_LENGTH (type2
);
705 std::vector
<char> ptr (count
* inval2len
);
706 if (type2
->code () == TYPE_CODE_CHAR
)
710 inchar
= (char) unpack_long (type2
,
711 value_contents (inval2
));
712 for (idx
= 0; idx
< count
; idx
++)
719 char_type
= TYPE_TARGET_TYPE (type2
);
721 for (idx
= 0; idx
< count
; idx
++)
723 memcpy (&ptr
[idx
* inval2len
], value_contents (inval2
),
727 outval
= value_string (ptr
.data (), count
* inval2len
, char_type
);
729 else if (type2
->code () == TYPE_CODE_BOOL
)
731 error (_("unimplemented support for boolean repeats"));
735 error (_("can't repeat values of that type"));
738 else if (type1
->code () == TYPE_CODE_STRING
739 || type1
->code () == TYPE_CODE_CHAR
)
741 /* We have two character strings to concatenate. */
742 if (type2
->code () != TYPE_CODE_STRING
743 && type2
->code () != TYPE_CODE_CHAR
)
745 error (_("Strings can only be concatenated with other strings."));
747 inval1len
= TYPE_LENGTH (type1
);
748 inval2len
= TYPE_LENGTH (type2
);
749 std::vector
<char> ptr (inval1len
+ inval2len
);
750 if (type1
->code () == TYPE_CODE_CHAR
)
754 ptr
[0] = (char) unpack_long (type1
, value_contents (inval1
));
758 char_type
= TYPE_TARGET_TYPE (type1
);
760 memcpy (ptr
.data (), value_contents (inval1
), inval1len
);
762 if (type2
->code () == TYPE_CODE_CHAR
)
765 (char) unpack_long (type2
, value_contents (inval2
));
769 memcpy (&ptr
[inval1len
], value_contents (inval2
), inval2len
);
771 outval
= value_string (ptr
.data (), inval1len
+ inval2len
, char_type
);
773 else if (type1
->code () == TYPE_CODE_BOOL
)
775 /* We have two bitstrings to concatenate. */
776 if (type2
->code () != TYPE_CODE_BOOL
)
778 error (_("Booleans can only be concatenated "
779 "with other bitstrings or booleans."));
781 error (_("unimplemented support for boolean concatenation."));
785 /* We don't know how to concatenate these operands. */
786 error (_("illegal operands for concatenation."));
791 /* Integer exponentiation: V1**V2, where both arguments are
792 integers. Requires V1 != 0 if V2 < 0. Returns 1 for 0 ** 0. */
795 integer_pow (LONGEST v1
, LONGEST v2
)
800 error (_("Attempt to raise 0 to negative power."));
806 /* The Russian Peasant's Algorithm. */
822 /* Obtain argument values for binary operation, converting from
823 other types if one of them is not floating point. */
825 value_args_as_target_float (struct value
*arg1
, struct value
*arg2
,
826 gdb_byte
*x
, struct type
**eff_type_x
,
827 gdb_byte
*y
, struct type
**eff_type_y
)
829 struct type
*type1
, *type2
;
831 type1
= check_typedef (value_type (arg1
));
832 type2
= check_typedef (value_type (arg2
));
834 /* At least one of the arguments must be of floating-point type. */
835 gdb_assert (is_floating_type (type1
) || is_floating_type (type2
));
837 if (is_floating_type (type1
) && is_floating_type (type2
)
838 && type1
->code () != type2
->code ())
839 /* The DFP extension to the C language does not allow mixing of
840 * decimal float types with other float types in expressions
841 * (see WDTR 24732, page 12). */
842 error (_("Mixing decimal floating types with "
843 "other floating types is not allowed."));
845 /* Obtain value of arg1, converting from other types if necessary. */
847 if (is_floating_type (type1
))
850 memcpy (x
, value_contents (arg1
), TYPE_LENGTH (type1
));
852 else if (is_integral_type (type1
))
855 if (type1
->is_unsigned ())
856 target_float_from_ulongest (x
, *eff_type_x
, value_as_long (arg1
));
858 target_float_from_longest (x
, *eff_type_x
, value_as_long (arg1
));
861 error (_("Don't know how to convert from %s to %s."), type1
->name (),
864 /* Obtain value of arg2, converting from other types if necessary. */
866 if (is_floating_type (type2
))
869 memcpy (y
, value_contents (arg2
), TYPE_LENGTH (type2
));
871 else if (is_integral_type (type2
))
874 if (type2
->is_unsigned ())
875 target_float_from_ulongest (y
, *eff_type_y
, value_as_long (arg2
));
877 target_float_from_longest (y
, *eff_type_y
, value_as_long (arg2
));
880 error (_("Don't know how to convert from %s to %s."), type1
->name (),
884 /* Assuming at last one of ARG1 or ARG2 is a fixed point value,
885 perform the binary operation OP on these two operands, and return
886 the resulting value (also as a fixed point). */
888 static struct value
*
889 fixed_point_binop (struct value
*arg1
, struct value
*arg2
, enum exp_opcode op
)
891 struct type
*type1
= check_typedef (value_type (arg1
));
892 struct type
*type2
= check_typedef (value_type (arg2
));
896 gdb_assert (is_fixed_point_type (type1
) || is_fixed_point_type (type2
));
897 if (!is_fixed_point_type (type1
))
899 arg1
= value_cast (type2
, arg1
);
902 if (!is_fixed_point_type (type2
))
904 arg2
= value_cast (type1
, arg2
);
909 v1
.read_fixed_point (value_contents (arg1
), TYPE_LENGTH (type1
),
910 type_byte_order (type1
), type1
->is_unsigned (),
911 fixed_point_scaling_factor (type1
));
912 v2
.read_fixed_point (value_contents (arg2
), TYPE_LENGTH (type2
),
913 type_byte_order (type2
), type2
->is_unsigned (),
914 fixed_point_scaling_factor (type2
));
916 #define INIT_VAL_WITH_FIXED_POINT_VAL(RESULT) \
918 val = allocate_value (type1); \
919 (RESULT).write_fixed_point \
920 (value_contents_raw (val), TYPE_LENGTH (type1), \
921 type_byte_order (type1), type1->is_unsigned (), \
922 fixed_point_scaling_factor (type1)); \
928 mpq_add (res
.val
, v1
.val
, v2
.val
);
929 INIT_VAL_WITH_FIXED_POINT_VAL (res
);
933 mpq_sub (res
.val
, v1
.val
, v2
.val
);
934 INIT_VAL_WITH_FIXED_POINT_VAL (res
);
938 INIT_VAL_WITH_FIXED_POINT_VAL (mpq_cmp (v1
.val
, v2
.val
) < 0 ? v1
: v2
);
942 INIT_VAL_WITH_FIXED_POINT_VAL (mpq_cmp (v1
.val
, v2
.val
) > 0 ? v1
: v2
);
946 mpq_mul (res
.val
, v1
.val
, v2
.val
);
947 INIT_VAL_WITH_FIXED_POINT_VAL (res
);
951 mpq_div (res
.val
, v1
.val
, v2
.val
);
952 INIT_VAL_WITH_FIXED_POINT_VAL (res
);
956 error (_("Integer-only operation on fixed point number."));
962 /* A helper function that finds the type to use for a binary operation
963 involving TYPE1 and TYPE2. */
966 promotion_type (struct type
*type1
, struct type
*type2
)
968 struct type
*result_type
;
970 if (is_floating_type (type1
) || is_floating_type (type2
))
972 /* If only one type is floating-point, use its type.
973 Otherwise use the bigger type. */
974 if (!is_floating_type (type1
))
976 else if (!is_floating_type (type2
))
978 else if (TYPE_LENGTH (type2
) > TYPE_LENGTH (type1
))
986 if (TYPE_LENGTH (type1
) > TYPE_LENGTH (type2
))
988 else if (TYPE_LENGTH (type2
) > TYPE_LENGTH (type1
))
990 else if (type1
->is_unsigned ())
992 else if (type2
->is_unsigned ())
1001 static struct value
*scalar_binop (struct value
*arg1
, struct value
*arg2
,
1002 enum exp_opcode op
);
1004 /* Perform a binary operation on complex operands. */
1006 static struct value
*
1007 complex_binop (struct value
*arg1
, struct value
*arg2
, enum exp_opcode op
)
1009 struct type
*arg1_type
= check_typedef (value_type (arg1
));
1010 struct type
*arg2_type
= check_typedef (value_type (arg2
));
1012 struct value
*arg1_real
, *arg1_imag
, *arg2_real
, *arg2_imag
;
1013 if (arg1_type
->code () == TYPE_CODE_COMPLEX
)
1015 arg1_real
= value_real_part (arg1
);
1016 arg1_imag
= value_imaginary_part (arg1
);
1021 arg1_imag
= value_zero (arg1_type
, not_lval
);
1023 if (arg2_type
->code () == TYPE_CODE_COMPLEX
)
1025 arg2_real
= value_real_part (arg2
);
1026 arg2_imag
= value_imaginary_part (arg2
);
1031 arg2_imag
= value_zero (arg2_type
, not_lval
);
1034 struct type
*comp_type
= promotion_type (value_type (arg1_real
),
1035 value_type (arg2_real
));
1036 arg1_real
= value_cast (comp_type
, arg1_real
);
1037 arg1_imag
= value_cast (comp_type
, arg1_imag
);
1038 arg2_real
= value_cast (comp_type
, arg2_real
);
1039 arg2_imag
= value_cast (comp_type
, arg2_imag
);
1041 struct type
*result_type
= init_complex_type (nullptr, comp_type
);
1043 struct value
*result_real
, *result_imag
;
1048 result_real
= scalar_binop (arg1_real
, arg2_real
, op
);
1049 result_imag
= scalar_binop (arg1_imag
, arg2_imag
, op
);
1054 struct value
*x1
= scalar_binop (arg1_real
, arg2_real
, op
);
1055 struct value
*x2
= scalar_binop (arg1_imag
, arg2_imag
, op
);
1056 result_real
= scalar_binop (x1
, x2
, BINOP_SUB
);
1058 x1
= scalar_binop (arg1_real
, arg2_imag
, op
);
1059 x2
= scalar_binop (arg1_imag
, arg2_real
, op
);
1060 result_imag
= scalar_binop (x1
, x2
, BINOP_ADD
);
1066 if (arg2_type
->code () == TYPE_CODE_COMPLEX
)
1068 struct value
*conjugate
= value_complement (arg2
);
1069 /* We have to reconstruct ARG1, in case the type was
1071 arg1
= value_literal_complex (arg1_real
, arg1_imag
, result_type
);
1073 struct value
*numerator
= scalar_binop (arg1
, conjugate
,
1075 arg1_real
= value_real_part (numerator
);
1076 arg1_imag
= value_imaginary_part (numerator
);
1078 struct value
*x1
= scalar_binop (arg2_real
, arg2_real
, BINOP_MUL
);
1079 struct value
*x2
= scalar_binop (arg2_imag
, arg2_imag
, BINOP_MUL
);
1080 arg2_real
= scalar_binop (x1
, x2
, BINOP_ADD
);
1083 result_real
= scalar_binop (arg1_real
, arg2_real
, op
);
1084 result_imag
= scalar_binop (arg1_imag
, arg2_real
, op
);
1089 case BINOP_NOTEQUAL
:
1091 struct value
*x1
= scalar_binop (arg1_real
, arg2_real
, op
);
1092 struct value
*x2
= scalar_binop (arg1_imag
, arg2_imag
, op
);
1094 LONGEST v1
= value_as_long (x1
);
1095 LONGEST v2
= value_as_long (x2
);
1097 if (op
== BINOP_EQUAL
)
1102 return value_from_longest (value_type (x1
), v1
);
1107 error (_("Invalid binary operation on numbers."));
1110 return value_literal_complex (result_real
, result_imag
, result_type
);
1113 /* Perform a binary operation on two operands which have reasonable
1114 representations as integers or floats. This includes booleans,
1115 characters, integers, or floats.
1116 Does not support addition and subtraction on pointers;
1117 use value_ptradd, value_ptrsub or value_ptrdiff for those operations. */
1119 static struct value
*
1120 scalar_binop (struct value
*arg1
, struct value
*arg2
, enum exp_opcode op
)
1123 struct type
*type1
, *type2
, *result_type
;
1125 arg1
= coerce_ref (arg1
);
1126 arg2
= coerce_ref (arg2
);
1128 type1
= check_typedef (value_type (arg1
));
1129 type2
= check_typedef (value_type (arg2
));
1131 if (type1
->code () == TYPE_CODE_COMPLEX
1132 || type2
->code () == TYPE_CODE_COMPLEX
)
1133 return complex_binop (arg1
, arg2
, op
);
1135 if ((!is_floating_value (arg1
)
1136 && !is_integral_type (type1
)
1137 && !is_fixed_point_type (type1
))
1138 || (!is_floating_value (arg2
)
1139 && !is_integral_type (type2
)
1140 && !is_fixed_point_type (type2
)))
1141 error (_("Argument to arithmetic operation not a number or boolean."));
1143 if (is_fixed_point_type (type1
) || is_fixed_point_type (type2
))
1144 return fixed_point_binop (arg1
, arg2
, op
);
1146 if (is_floating_type (type1
) || is_floating_type (type2
))
1148 result_type
= promotion_type (type1
, type2
);
1149 val
= allocate_value (result_type
);
1151 struct type
*eff_type_v1
, *eff_type_v2
;
1152 gdb::byte_vector v1
, v2
;
1153 v1
.resize (TYPE_LENGTH (result_type
));
1154 v2
.resize (TYPE_LENGTH (result_type
));
1156 value_args_as_target_float (arg1
, arg2
,
1157 v1
.data (), &eff_type_v1
,
1158 v2
.data (), &eff_type_v2
);
1159 target_float_binop (op
, v1
.data (), eff_type_v1
,
1160 v2
.data (), eff_type_v2
,
1161 value_contents_raw (val
), result_type
);
1163 else if (type1
->code () == TYPE_CODE_BOOL
1164 || type2
->code () == TYPE_CODE_BOOL
)
1166 LONGEST v1
, v2
, v
= 0;
1168 v1
= value_as_long (arg1
);
1169 v2
= value_as_long (arg2
);
1173 case BINOP_BITWISE_AND
:
1177 case BINOP_BITWISE_IOR
:
1181 case BINOP_BITWISE_XOR
:
1189 case BINOP_NOTEQUAL
:
1194 error (_("Invalid operation on booleans."));
1197 result_type
= type1
;
1199 val
= allocate_value (result_type
);
1200 store_signed_integer (value_contents_raw (val
),
1201 TYPE_LENGTH (result_type
),
1202 type_byte_order (result_type
),
1206 /* Integral operations here. */
1208 /* Determine type length of the result, and if the operation should
1209 be done unsigned. For exponentiation and shift operators,
1210 use the length and type of the left operand. Otherwise,
1211 use the signedness of the operand with the greater length.
1212 If both operands are of equal length, use unsigned operation
1213 if one of the operands is unsigned. */
1214 if (op
== BINOP_RSH
|| op
== BINOP_LSH
|| op
== BINOP_EXP
)
1215 result_type
= type1
;
1217 result_type
= promotion_type (type1
, type2
);
1219 if (result_type
->is_unsigned ())
1221 LONGEST v2_signed
= value_as_long (arg2
);
1222 ULONGEST v1
, v2
, v
= 0;
1224 v1
= (ULONGEST
) value_as_long (arg1
);
1225 v2
= (ULONGEST
) v2_signed
;
1246 error (_("Division by zero"));
1250 v
= uinteger_pow (v1
, v2_signed
);
1257 error (_("Division by zero"));
1261 /* Knuth 1.2.4, integer only. Note that unlike the C '%' op,
1262 v1 mod 0 has a defined value, v1. */
1270 /* Note floor(v1/v2) == v1/v2 for unsigned. */
1283 case BINOP_BITWISE_AND
:
1287 case BINOP_BITWISE_IOR
:
1291 case BINOP_BITWISE_XOR
:
1295 case BINOP_LOGICAL_AND
:
1299 case BINOP_LOGICAL_OR
:
1304 v
= v1
< v2
? v1
: v2
;
1308 v
= v1
> v2
? v1
: v2
;
1315 case BINOP_NOTEQUAL
:
1336 error (_("Invalid binary operation on numbers."));
1339 val
= allocate_value (result_type
);
1340 store_unsigned_integer (value_contents_raw (val
),
1341 TYPE_LENGTH (value_type (val
)),
1342 type_byte_order (result_type
),
1347 LONGEST v1
, v2
, v
= 0;
1349 v1
= value_as_long (arg1
);
1350 v2
= value_as_long (arg2
);
1371 error (_("Division by zero"));
1375 v
= integer_pow (v1
, v2
);
1382 error (_("Division by zero"));
1386 /* Knuth 1.2.4, integer only. Note that unlike the C '%' op,
1387 X mod 0 has a defined value, X. */
1395 /* Compute floor. */
1396 if (TRUNCATION_TOWARDS_ZERO
&& (v
< 0) && ((v1
% v2
) != 0))
1412 case BINOP_BITWISE_AND
:
1416 case BINOP_BITWISE_IOR
:
1420 case BINOP_BITWISE_XOR
:
1424 case BINOP_LOGICAL_AND
:
1428 case BINOP_LOGICAL_OR
:
1433 v
= v1
< v2
? v1
: v2
;
1437 v
= v1
> v2
? v1
: v2
;
1444 case BINOP_NOTEQUAL
:
1465 error (_("Invalid binary operation on numbers."));
1468 val
= allocate_value (result_type
);
1469 store_signed_integer (value_contents_raw (val
),
1470 TYPE_LENGTH (value_type (val
)),
1471 type_byte_order (result_type
),
1479 /* Widen a scalar value SCALAR_VALUE to vector type VECTOR_TYPE by
1480 replicating SCALAR_VALUE for each element of the vector. Only scalar
1481 types that can be cast to the type of one element of the vector are
1482 acceptable. The newly created vector value is returned upon success,
1483 otherwise an error is thrown. */
1486 value_vector_widen (struct value
*scalar_value
, struct type
*vector_type
)
1488 /* Widen the scalar to a vector. */
1489 struct type
*eltype
, *scalar_type
;
1490 struct value
*val
, *elval
;
1491 LONGEST low_bound
, high_bound
;
1494 vector_type
= check_typedef (vector_type
);
1496 gdb_assert (vector_type
->code () == TYPE_CODE_ARRAY
1497 && vector_type
->is_vector ());
1499 if (!get_array_bounds (vector_type
, &low_bound
, &high_bound
))
1500 error (_("Could not determine the vector bounds"));
1502 eltype
= check_typedef (TYPE_TARGET_TYPE (vector_type
));
1503 elval
= value_cast (eltype
, scalar_value
);
1505 scalar_type
= check_typedef (value_type (scalar_value
));
1507 /* If we reduced the length of the scalar then check we didn't loose any
1509 if (TYPE_LENGTH (eltype
) < TYPE_LENGTH (scalar_type
)
1510 && !value_equal (elval
, scalar_value
))
1511 error (_("conversion of scalar to vector involves truncation"));
1513 val
= allocate_value (vector_type
);
1514 for (i
= 0; i
< high_bound
- low_bound
+ 1; i
++)
1515 /* Duplicate the contents of elval into the destination vector. */
1516 memcpy (value_contents_writeable (val
) + (i
* TYPE_LENGTH (eltype
)),
1517 value_contents_all (elval
), TYPE_LENGTH (eltype
));
1522 /* Performs a binary operation on two vector operands by calling scalar_binop
1523 for each pair of vector components. */
1525 static struct value
*
1526 vector_binop (struct value
*val1
, struct value
*val2
, enum exp_opcode op
)
1528 struct value
*val
, *tmp
, *mark
;
1529 struct type
*type1
, *type2
, *eltype1
, *eltype2
;
1530 int t1_is_vec
, t2_is_vec
, elsize
, i
;
1531 LONGEST low_bound1
, high_bound1
, low_bound2
, high_bound2
;
1533 type1
= check_typedef (value_type (val1
));
1534 type2
= check_typedef (value_type (val2
));
1536 t1_is_vec
= (type1
->code () == TYPE_CODE_ARRAY
1537 && type1
->is_vector ()) ? 1 : 0;
1538 t2_is_vec
= (type2
->code () == TYPE_CODE_ARRAY
1539 && type2
->is_vector ()) ? 1 : 0;
1541 if (!t1_is_vec
|| !t2_is_vec
)
1542 error (_("Vector operations are only supported among vectors"));
1544 if (!get_array_bounds (type1
, &low_bound1
, &high_bound1
)
1545 || !get_array_bounds (type2
, &low_bound2
, &high_bound2
))
1546 error (_("Could not determine the vector bounds"));
1548 eltype1
= check_typedef (TYPE_TARGET_TYPE (type1
));
1549 eltype2
= check_typedef (TYPE_TARGET_TYPE (type2
));
1550 elsize
= TYPE_LENGTH (eltype1
);
1552 if (eltype1
->code () != eltype2
->code ()
1553 || elsize
!= TYPE_LENGTH (eltype2
)
1554 || eltype1
->is_unsigned () != eltype2
->is_unsigned ()
1555 || low_bound1
!= low_bound2
|| high_bound1
!= high_bound2
)
1556 error (_("Cannot perform operation on vectors with different types"));
1558 val
= allocate_value (type1
);
1559 mark
= value_mark ();
1560 for (i
= 0; i
< high_bound1
- low_bound1
+ 1; i
++)
1562 tmp
= value_binop (value_subscript (val1
, i
),
1563 value_subscript (val2
, i
), op
);
1564 memcpy (value_contents_writeable (val
) + i
* elsize
,
1565 value_contents_all (tmp
),
1568 value_free_to_mark (mark
);
1573 /* Perform a binary operation on two operands. */
1576 value_binop (struct value
*arg1
, struct value
*arg2
, enum exp_opcode op
)
1579 struct type
*type1
= check_typedef (value_type (arg1
));
1580 struct type
*type2
= check_typedef (value_type (arg2
));
1581 int t1_is_vec
= (type1
->code () == TYPE_CODE_ARRAY
1582 && type1
->is_vector ());
1583 int t2_is_vec
= (type2
->code () == TYPE_CODE_ARRAY
1584 && type2
->is_vector ());
1586 if (!t1_is_vec
&& !t2_is_vec
)
1587 val
= scalar_binop (arg1
, arg2
, op
);
1588 else if (t1_is_vec
&& t2_is_vec
)
1589 val
= vector_binop (arg1
, arg2
, op
);
1592 /* Widen the scalar operand to a vector. */
1593 struct value
**v
= t1_is_vec
? &arg2
: &arg1
;
1594 struct type
*t
= t1_is_vec
? type2
: type1
;
1596 if (t
->code () != TYPE_CODE_FLT
1597 && t
->code () != TYPE_CODE_DECFLOAT
1598 && !is_integral_type (t
))
1599 error (_("Argument to operation not a number or boolean."));
1601 /* Replicate the scalar value to make a vector value. */
1602 *v
= value_vector_widen (*v
, t1_is_vec
? type1
: type2
);
1604 val
= vector_binop (arg1
, arg2
, op
);
1610 /* Simulate the C operator ! -- return 1 if ARG1 contains zero. */
1613 value_logical_not (struct value
*arg1
)
1619 arg1
= coerce_array (arg1
);
1620 type1
= check_typedef (value_type (arg1
));
1622 if (is_floating_value (arg1
))
1623 return target_float_is_zero (value_contents (arg1
), type1
);
1625 len
= TYPE_LENGTH (type1
);
1626 p
= value_contents (arg1
);
1637 /* Perform a comparison on two string values (whose content are not
1638 necessarily null terminated) based on their length. */
1641 value_strcmp (struct value
*arg1
, struct value
*arg2
)
1643 int len1
= TYPE_LENGTH (value_type (arg1
));
1644 int len2
= TYPE_LENGTH (value_type (arg2
));
1645 const gdb_byte
*s1
= value_contents (arg1
);
1646 const gdb_byte
*s2
= value_contents (arg2
);
1647 int i
, len
= len1
< len2
? len1
: len2
;
1649 for (i
= 0; i
< len
; i
++)
1653 else if (s1
[i
] > s2
[i
])
1661 else if (len1
> len2
)
1667 /* Simulate the C operator == by returning a 1
1668 iff ARG1 and ARG2 have equal contents. */
1671 value_equal (struct value
*arg1
, struct value
*arg2
)
1676 struct type
*type1
, *type2
;
1677 enum type_code code1
;
1678 enum type_code code2
;
1679 int is_int1
, is_int2
;
1681 arg1
= coerce_array (arg1
);
1682 arg2
= coerce_array (arg2
);
1684 type1
= check_typedef (value_type (arg1
));
1685 type2
= check_typedef (value_type (arg2
));
1686 code1
= type1
->code ();
1687 code2
= type2
->code ();
1688 is_int1
= is_integral_type (type1
);
1689 is_int2
= is_integral_type (type2
);
1691 if (is_int1
&& is_int2
)
1692 return longest_to_int (value_as_long (value_binop (arg1
, arg2
,
1694 else if ((is_floating_value (arg1
) || is_int1
)
1695 && (is_floating_value (arg2
) || is_int2
))
1697 struct type
*eff_type_v1
, *eff_type_v2
;
1698 gdb::byte_vector v1
, v2
;
1699 v1
.resize (std::max (TYPE_LENGTH (type1
), TYPE_LENGTH (type2
)));
1700 v2
.resize (std::max (TYPE_LENGTH (type1
), TYPE_LENGTH (type2
)));
1702 value_args_as_target_float (arg1
, arg2
,
1703 v1
.data (), &eff_type_v1
,
1704 v2
.data (), &eff_type_v2
);
1706 return target_float_compare (v1
.data (), eff_type_v1
,
1707 v2
.data (), eff_type_v2
) == 0;
1710 /* FIXME: Need to promote to either CORE_ADDR or LONGEST, whichever
1712 else if (code1
== TYPE_CODE_PTR
&& is_int2
)
1713 return value_as_address (arg1
) == (CORE_ADDR
) value_as_long (arg2
);
1714 else if (code2
== TYPE_CODE_PTR
&& is_int1
)
1715 return (CORE_ADDR
) value_as_long (arg1
) == value_as_address (arg2
);
1717 else if (code1
== code2
1718 && ((len
= (int) TYPE_LENGTH (type1
))
1719 == (int) TYPE_LENGTH (type2
)))
1721 p1
= value_contents (arg1
);
1722 p2
= value_contents (arg2
);
1730 else if (code1
== TYPE_CODE_STRING
&& code2
== TYPE_CODE_STRING
)
1732 return value_strcmp (arg1
, arg2
) == 0;
1735 error (_("Invalid type combination in equality test."));
1738 /* Compare values based on their raw contents. Useful for arrays since
1739 value_equal coerces them to pointers, thus comparing just the address
1740 of the array instead of its contents. */
1743 value_equal_contents (struct value
*arg1
, struct value
*arg2
)
1745 struct type
*type1
, *type2
;
1747 type1
= check_typedef (value_type (arg1
));
1748 type2
= check_typedef (value_type (arg2
));
1750 return (type1
->code () == type2
->code ()
1751 && TYPE_LENGTH (type1
) == TYPE_LENGTH (type2
)
1752 && memcmp (value_contents (arg1
), value_contents (arg2
),
1753 TYPE_LENGTH (type1
)) == 0);
1756 /* Simulate the C operator < by returning 1
1757 iff ARG1's contents are less than ARG2's. */
1760 value_less (struct value
*arg1
, struct value
*arg2
)
1762 enum type_code code1
;
1763 enum type_code code2
;
1764 struct type
*type1
, *type2
;
1765 int is_int1
, is_int2
;
1767 arg1
= coerce_array (arg1
);
1768 arg2
= coerce_array (arg2
);
1770 type1
= check_typedef (value_type (arg1
));
1771 type2
= check_typedef (value_type (arg2
));
1772 code1
= type1
->code ();
1773 code2
= type2
->code ();
1774 is_int1
= is_integral_type (type1
);
1775 is_int2
= is_integral_type (type2
);
1777 if (is_int1
&& is_int2
)
1778 return longest_to_int (value_as_long (value_binop (arg1
, arg2
,
1780 else if ((is_floating_value (arg1
) || is_int1
)
1781 && (is_floating_value (arg2
) || is_int2
))
1783 struct type
*eff_type_v1
, *eff_type_v2
;
1784 gdb::byte_vector v1
, v2
;
1785 v1
.resize (std::max (TYPE_LENGTH (type1
), TYPE_LENGTH (type2
)));
1786 v2
.resize (std::max (TYPE_LENGTH (type1
), TYPE_LENGTH (type2
)));
1788 value_args_as_target_float (arg1
, arg2
,
1789 v1
.data (), &eff_type_v1
,
1790 v2
.data (), &eff_type_v2
);
1792 return target_float_compare (v1
.data (), eff_type_v1
,
1793 v2
.data (), eff_type_v2
) == -1;
1795 else if (code1
== TYPE_CODE_PTR
&& code2
== TYPE_CODE_PTR
)
1796 return value_as_address (arg1
) < value_as_address (arg2
);
1798 /* FIXME: Need to promote to either CORE_ADDR or LONGEST, whichever
1800 else if (code1
== TYPE_CODE_PTR
&& is_int2
)
1801 return value_as_address (arg1
) < (CORE_ADDR
) value_as_long (arg2
);
1802 else if (code2
== TYPE_CODE_PTR
&& is_int1
)
1803 return (CORE_ADDR
) value_as_long (arg1
) < value_as_address (arg2
);
1804 else if (code1
== TYPE_CODE_STRING
&& code2
== TYPE_CODE_STRING
)
1805 return value_strcmp (arg1
, arg2
) < 0;
1808 error (_("Invalid type combination in ordering comparison."));
1813 /* The unary operators +, - and ~. They free the argument ARG1. */
1816 value_pos (struct value
*arg1
)
1820 arg1
= coerce_ref (arg1
);
1821 type
= check_typedef (value_type (arg1
));
1823 if (is_integral_type (type
) || is_floating_value (arg1
)
1824 || (type
->code () == TYPE_CODE_ARRAY
&& type
->is_vector ())
1825 || type
->code () == TYPE_CODE_COMPLEX
)
1826 return value_from_contents (type
, value_contents (arg1
));
1828 error (_("Argument to positive operation not a number."));
1832 value_neg (struct value
*arg1
)
1836 arg1
= coerce_ref (arg1
);
1837 type
= check_typedef (value_type (arg1
));
1839 if (is_integral_type (type
) || is_floating_type (type
))
1840 return value_binop (value_from_longest (type
, 0), arg1
, BINOP_SUB
);
1841 else if (is_fixed_point_type (type
))
1842 return value_binop (value_zero (type
, not_lval
), arg1
, BINOP_SUB
);
1843 else if (type
->code () == TYPE_CODE_ARRAY
&& type
->is_vector ())
1845 struct value
*tmp
, *val
= allocate_value (type
);
1846 struct type
*eltype
= check_typedef (TYPE_TARGET_TYPE (type
));
1848 LONGEST low_bound
, high_bound
;
1850 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
1851 error (_("Could not determine the vector bounds"));
1853 for (i
= 0; i
< high_bound
- low_bound
+ 1; i
++)
1855 tmp
= value_neg (value_subscript (arg1
, i
));
1856 memcpy (value_contents_writeable (val
) + i
* TYPE_LENGTH (eltype
),
1857 value_contents_all (tmp
), TYPE_LENGTH (eltype
));
1861 else if (type
->code () == TYPE_CODE_COMPLEX
)
1863 struct value
*real
= value_real_part (arg1
);
1864 struct value
*imag
= value_imaginary_part (arg1
);
1866 real
= value_neg (real
);
1867 imag
= value_neg (imag
);
1868 return value_literal_complex (real
, imag
, type
);
1871 error (_("Argument to negate operation not a number."));
1875 value_complement (struct value
*arg1
)
1880 arg1
= coerce_ref (arg1
);
1881 type
= check_typedef (value_type (arg1
));
1883 if (is_integral_type (type
))
1884 val
= value_from_longest (type
, ~value_as_long (arg1
));
1885 else if (type
->code () == TYPE_CODE_ARRAY
&& type
->is_vector ())
1888 struct type
*eltype
= check_typedef (TYPE_TARGET_TYPE (type
));
1890 LONGEST low_bound
, high_bound
;
1892 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
1893 error (_("Could not determine the vector bounds"));
1895 val
= allocate_value (type
);
1896 for (i
= 0; i
< high_bound
- low_bound
+ 1; i
++)
1898 tmp
= value_complement (value_subscript (arg1
, i
));
1899 memcpy (value_contents_writeable (val
) + i
* TYPE_LENGTH (eltype
),
1900 value_contents_all (tmp
), TYPE_LENGTH (eltype
));
1903 else if (type
->code () == TYPE_CODE_COMPLEX
)
1905 /* GCC has an extension that treats ~complex as the complex
1907 struct value
*real
= value_real_part (arg1
);
1908 struct value
*imag
= value_imaginary_part (arg1
);
1910 imag
= value_neg (imag
);
1911 return value_literal_complex (real
, imag
, type
);
1914 error (_("Argument to complement operation not an integer, boolean."));
1919 /* The INDEX'th bit of SET value whose value_type is TYPE,
1920 and whose value_contents is valaddr.
1921 Return -1 if out of range, -2 other error. */
1924 value_bit_index (struct type
*type
, const gdb_byte
*valaddr
, int index
)
1926 struct gdbarch
*gdbarch
= get_type_arch (type
);
1927 LONGEST low_bound
, high_bound
;
1930 struct type
*range
= type
->index_type ();
1932 if (get_discrete_bounds (range
, &low_bound
, &high_bound
) < 0)
1934 if (index
< low_bound
|| index
> high_bound
)
1936 rel_index
= index
- low_bound
;
1937 word
= extract_unsigned_integer (valaddr
+ (rel_index
/ TARGET_CHAR_BIT
), 1,
1938 type_byte_order (type
));
1939 rel_index
%= TARGET_CHAR_BIT
;
1940 if (gdbarch_byte_order (gdbarch
) == BFD_ENDIAN_BIG
)
1941 rel_index
= TARGET_CHAR_BIT
- 1 - rel_index
;
1942 return (word
>> rel_index
) & 1;
1946 value_in (struct value
*element
, struct value
*set
)
1949 struct type
*settype
= check_typedef (value_type (set
));
1950 struct type
*eltype
= check_typedef (value_type (element
));
1952 if (eltype
->code () == TYPE_CODE_RANGE
)
1953 eltype
= TYPE_TARGET_TYPE (eltype
);
1954 if (settype
->code () != TYPE_CODE_SET
)
1955 error (_("Second argument of 'IN' has wrong type"));
1956 if (eltype
->code () != TYPE_CODE_INT
1957 && eltype
->code () != TYPE_CODE_CHAR
1958 && eltype
->code () != TYPE_CODE_ENUM
1959 && eltype
->code () != TYPE_CODE_BOOL
)
1960 error (_("First argument of 'IN' has wrong type"));
1961 member
= value_bit_index (settype
, value_contents (set
),
1962 value_as_long (element
));
1964 error (_("First argument of 'IN' not in range"));