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 int c_style
= current_language
->c_style_arrays
;
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 /* Integer exponentiation: V1**V2, where both arguments are
823 integers. Requires V1 != 0 if V2 < 0. Returns 1 for 0 ** 0. */
826 uinteger_pow (ULONGEST v1
, LONGEST v2
)
831 error (_("Attempt to raise 0 to negative power."));
837 /* The Russian Peasant's Algorithm. */
853 /* Obtain argument values for binary operation, converting from
854 other types if one of them is not floating point. */
856 value_args_as_target_float (struct value
*arg1
, struct value
*arg2
,
857 gdb_byte
*x
, struct type
**eff_type_x
,
858 gdb_byte
*y
, struct type
**eff_type_y
)
860 struct type
*type1
, *type2
;
862 type1
= check_typedef (value_type (arg1
));
863 type2
= check_typedef (value_type (arg2
));
865 /* At least one of the arguments must be of floating-point type. */
866 gdb_assert (is_floating_type (type1
) || is_floating_type (type2
));
868 if (is_floating_type (type1
) && is_floating_type (type2
)
869 && type1
->code () != type2
->code ())
870 /* The DFP extension to the C language does not allow mixing of
871 * decimal float types with other float types in expressions
872 * (see WDTR 24732, page 12). */
873 error (_("Mixing decimal floating types with "
874 "other floating types is not allowed."));
876 /* Obtain value of arg1, converting from other types if necessary. */
878 if (is_floating_type (type1
))
881 memcpy (x
, value_contents (arg1
), TYPE_LENGTH (type1
));
883 else if (is_integral_type (type1
))
886 if (TYPE_UNSIGNED (type1
))
887 target_float_from_ulongest (x
, *eff_type_x
, value_as_long (arg1
));
889 target_float_from_longest (x
, *eff_type_x
, value_as_long (arg1
));
892 error (_("Don't know how to convert from %s to %s."), type1
->name (),
895 /* Obtain value of arg2, converting from other types if necessary. */
897 if (is_floating_type (type2
))
900 memcpy (y
, value_contents (arg2
), TYPE_LENGTH (type2
));
902 else if (is_integral_type (type2
))
905 if (TYPE_UNSIGNED (type2
))
906 target_float_from_ulongest (y
, *eff_type_y
, value_as_long (arg2
));
908 target_float_from_longest (y
, *eff_type_y
, value_as_long (arg2
));
911 error (_("Don't know how to convert from %s to %s."), type1
->name (),
915 /* A helper function that finds the type to use for a binary operation
916 involving TYPE1 and TYPE2. */
919 promotion_type (struct type
*type1
, struct type
*type2
)
921 struct type
*result_type
;
923 if (is_floating_type (type1
) || is_floating_type (type2
))
925 /* If only one type is floating-point, use its type.
926 Otherwise use the bigger type. */
927 if (!is_floating_type (type1
))
929 else if (!is_floating_type (type2
))
931 else if (TYPE_LENGTH (type2
) > TYPE_LENGTH (type1
))
939 if (TYPE_LENGTH (type1
) > TYPE_LENGTH (type2
))
941 else if (TYPE_LENGTH (type2
) > TYPE_LENGTH (type1
))
943 else if (TYPE_UNSIGNED (type1
))
945 else if (TYPE_UNSIGNED (type2
))
954 static struct value
*scalar_binop (struct value
*arg1
, struct value
*arg2
,
957 /* Perform a binary operation on complex operands. */
959 static struct value
*
960 complex_binop (struct value
*arg1
, struct value
*arg2
, enum exp_opcode op
)
962 struct type
*arg1_type
= check_typedef (value_type (arg1
));
963 struct type
*arg2_type
= check_typedef (value_type (arg2
));
965 struct value
*arg1_real
, *arg1_imag
, *arg2_real
, *arg2_imag
;
966 if (arg1_type
->code () == TYPE_CODE_COMPLEX
)
968 arg1_real
= value_real_part (arg1
);
969 arg1_imag
= value_imaginary_part (arg1
);
974 arg1_imag
= value_zero (arg1_type
, not_lval
);
976 if (arg2_type
->code () == TYPE_CODE_COMPLEX
)
978 arg2_real
= value_real_part (arg2
);
979 arg2_imag
= value_imaginary_part (arg2
);
984 arg2_imag
= value_zero (arg2_type
, not_lval
);
987 struct type
*comp_type
= promotion_type (value_type (arg1_real
),
988 value_type (arg2_real
));
989 arg1_real
= value_cast (comp_type
, arg1_real
);
990 arg1_imag
= value_cast (comp_type
, arg1_imag
);
991 arg2_real
= value_cast (comp_type
, arg2_real
);
992 arg2_imag
= value_cast (comp_type
, arg2_imag
);
994 struct type
*result_type
= init_complex_type (nullptr, comp_type
);
996 struct value
*result_real
, *result_imag
;
1001 result_real
= scalar_binop (arg1_real
, arg2_real
, op
);
1002 result_imag
= scalar_binop (arg1_imag
, arg2_imag
, op
);
1007 struct value
*x1
= scalar_binop (arg1_real
, arg2_real
, op
);
1008 struct value
*x2
= scalar_binop (arg1_imag
, arg2_imag
, op
);
1009 result_real
= scalar_binop (x1
, x2
, BINOP_SUB
);
1011 x1
= scalar_binop (arg1_real
, arg2_imag
, op
);
1012 x2
= scalar_binop (arg1_imag
, arg2_real
, op
);
1013 result_imag
= scalar_binop (x1
, x2
, BINOP_ADD
);
1019 if (arg2_type
->code () == TYPE_CODE_COMPLEX
)
1021 struct value
*conjugate
= value_complement (arg2
);
1022 /* We have to reconstruct ARG1, in case the type was
1024 arg1
= value_literal_complex (arg1_real
, arg1_imag
, result_type
);
1026 struct value
*numerator
= scalar_binop (arg1
, conjugate
,
1028 arg1_real
= value_real_part (numerator
);
1029 arg1_imag
= value_imaginary_part (numerator
);
1031 struct value
*x1
= scalar_binop (arg2_real
, arg2_real
, BINOP_MUL
);
1032 struct value
*x2
= scalar_binop (arg2_imag
, arg2_imag
, BINOP_MUL
);
1033 arg2_real
= scalar_binop (x1
, x2
, BINOP_ADD
);
1036 result_real
= scalar_binop (arg1_real
, arg2_real
, op
);
1037 result_imag
= scalar_binop (arg1_imag
, arg2_real
, op
);
1042 case BINOP_NOTEQUAL
:
1044 struct value
*x1
= scalar_binop (arg1_real
, arg2_real
, op
);
1045 struct value
*x2
= scalar_binop (arg1_imag
, arg2_imag
, op
);
1047 LONGEST v1
= value_as_long (x1
);
1048 LONGEST v2
= value_as_long (x2
);
1050 if (op
== BINOP_EQUAL
)
1055 return value_from_longest (value_type (x1
), v1
);
1060 error (_("Invalid binary operation on numbers."));
1063 return value_literal_complex (result_real
, result_imag
, result_type
);
1066 /* Perform a binary operation on two operands which have reasonable
1067 representations as integers or floats. This includes booleans,
1068 characters, integers, or floats.
1069 Does not support addition and subtraction on pointers;
1070 use value_ptradd, value_ptrsub or value_ptrdiff for those operations. */
1072 static struct value
*
1073 scalar_binop (struct value
*arg1
, struct value
*arg2
, enum exp_opcode op
)
1076 struct type
*type1
, *type2
, *result_type
;
1078 arg1
= coerce_ref (arg1
);
1079 arg2
= coerce_ref (arg2
);
1081 type1
= check_typedef (value_type (arg1
));
1082 type2
= check_typedef (value_type (arg2
));
1084 if (type1
->code () == TYPE_CODE_COMPLEX
1085 || type2
->code () == TYPE_CODE_COMPLEX
)
1086 return complex_binop (arg1
, arg2
, op
);
1088 if ((!is_floating_value (arg1
) && !is_integral_type (type1
))
1089 || (!is_floating_value (arg2
) && !is_integral_type (type2
)))
1090 error (_("Argument to arithmetic operation not a number or boolean."));
1092 if (is_floating_type (type1
) || is_floating_type (type2
))
1094 result_type
= promotion_type (type1
, type2
);
1095 val
= allocate_value (result_type
);
1097 struct type
*eff_type_v1
, *eff_type_v2
;
1098 gdb::byte_vector v1
, v2
;
1099 v1
.resize (TYPE_LENGTH (result_type
));
1100 v2
.resize (TYPE_LENGTH (result_type
));
1102 value_args_as_target_float (arg1
, arg2
,
1103 v1
.data (), &eff_type_v1
,
1104 v2
.data (), &eff_type_v2
);
1105 target_float_binop (op
, v1
.data (), eff_type_v1
,
1106 v2
.data (), eff_type_v2
,
1107 value_contents_raw (val
), result_type
);
1109 else if (type1
->code () == TYPE_CODE_BOOL
1110 || type2
->code () == TYPE_CODE_BOOL
)
1112 LONGEST v1
, v2
, v
= 0;
1114 v1
= value_as_long (arg1
);
1115 v2
= value_as_long (arg2
);
1119 case BINOP_BITWISE_AND
:
1123 case BINOP_BITWISE_IOR
:
1127 case BINOP_BITWISE_XOR
:
1135 case BINOP_NOTEQUAL
:
1140 error (_("Invalid operation on booleans."));
1143 result_type
= type1
;
1145 val
= allocate_value (result_type
);
1146 store_signed_integer (value_contents_raw (val
),
1147 TYPE_LENGTH (result_type
),
1148 type_byte_order (result_type
),
1152 /* Integral operations here. */
1154 /* Determine type length of the result, and if the operation should
1155 be done unsigned. For exponentiation and shift operators,
1156 use the length and type of the left operand. Otherwise,
1157 use the signedness of the operand with the greater length.
1158 If both operands are of equal length, use unsigned operation
1159 if one of the operands is unsigned. */
1160 if (op
== BINOP_RSH
|| op
== BINOP_LSH
|| op
== BINOP_EXP
)
1161 result_type
= type1
;
1163 result_type
= promotion_type (type1
, type2
);
1165 if (TYPE_UNSIGNED (result_type
))
1167 LONGEST v2_signed
= value_as_long (arg2
);
1168 ULONGEST v1
, v2
, v
= 0;
1170 v1
= (ULONGEST
) value_as_long (arg1
);
1171 v2
= (ULONGEST
) v2_signed
;
1192 error (_("Division by zero"));
1196 v
= uinteger_pow (v1
, v2_signed
);
1203 error (_("Division by zero"));
1207 /* Knuth 1.2.4, integer only. Note that unlike the C '%' op,
1208 v1 mod 0 has a defined value, v1. */
1216 /* Note floor(v1/v2) == v1/v2 for unsigned. */
1229 case BINOP_BITWISE_AND
:
1233 case BINOP_BITWISE_IOR
:
1237 case BINOP_BITWISE_XOR
:
1241 case BINOP_LOGICAL_AND
:
1245 case BINOP_LOGICAL_OR
:
1250 v
= v1
< v2
? v1
: v2
;
1254 v
= v1
> v2
? v1
: v2
;
1261 case BINOP_NOTEQUAL
:
1282 error (_("Invalid binary operation on numbers."));
1285 val
= allocate_value (result_type
);
1286 store_unsigned_integer (value_contents_raw (val
),
1287 TYPE_LENGTH (value_type (val
)),
1288 type_byte_order (result_type
),
1293 LONGEST v1
, v2
, v
= 0;
1295 v1
= value_as_long (arg1
);
1296 v2
= value_as_long (arg2
);
1317 error (_("Division by zero"));
1321 v
= integer_pow (v1
, v2
);
1328 error (_("Division by zero"));
1332 /* Knuth 1.2.4, integer only. Note that unlike the C '%' op,
1333 X mod 0 has a defined value, X. */
1341 /* Compute floor. */
1342 if (TRUNCATION_TOWARDS_ZERO
&& (v
< 0) && ((v1
% v2
) != 0))
1358 case BINOP_BITWISE_AND
:
1362 case BINOP_BITWISE_IOR
:
1366 case BINOP_BITWISE_XOR
:
1370 case BINOP_LOGICAL_AND
:
1374 case BINOP_LOGICAL_OR
:
1379 v
= v1
< v2
? v1
: v2
;
1383 v
= v1
> v2
? v1
: v2
;
1390 case BINOP_NOTEQUAL
:
1411 error (_("Invalid binary operation on numbers."));
1414 val
= allocate_value (result_type
);
1415 store_signed_integer (value_contents_raw (val
),
1416 TYPE_LENGTH (value_type (val
)),
1417 type_byte_order (result_type
),
1425 /* Widen a scalar value SCALAR_VALUE to vector type VECTOR_TYPE by
1426 replicating SCALAR_VALUE for each element of the vector. Only scalar
1427 types that can be cast to the type of one element of the vector are
1428 acceptable. The newly created vector value is returned upon success,
1429 otherwise an error is thrown. */
1432 value_vector_widen (struct value
*scalar_value
, struct type
*vector_type
)
1434 /* Widen the scalar to a vector. */
1435 struct type
*eltype
, *scalar_type
;
1436 struct value
*val
, *elval
;
1437 LONGEST low_bound
, high_bound
;
1440 vector_type
= check_typedef (vector_type
);
1442 gdb_assert (vector_type
->code () == TYPE_CODE_ARRAY
1443 && TYPE_VECTOR (vector_type
));
1445 if (!get_array_bounds (vector_type
, &low_bound
, &high_bound
))
1446 error (_("Could not determine the vector bounds"));
1448 eltype
= check_typedef (TYPE_TARGET_TYPE (vector_type
));
1449 elval
= value_cast (eltype
, scalar_value
);
1451 scalar_type
= check_typedef (value_type (scalar_value
));
1453 /* If we reduced the length of the scalar then check we didn't loose any
1455 if (TYPE_LENGTH (eltype
) < TYPE_LENGTH (scalar_type
)
1456 && !value_equal (elval
, scalar_value
))
1457 error (_("conversion of scalar to vector involves truncation"));
1459 val
= allocate_value (vector_type
);
1460 for (i
= 0; i
< high_bound
- low_bound
+ 1; i
++)
1461 /* Duplicate the contents of elval into the destination vector. */
1462 memcpy (value_contents_writeable (val
) + (i
* TYPE_LENGTH (eltype
)),
1463 value_contents_all (elval
), TYPE_LENGTH (eltype
));
1468 /* Performs a binary operation on two vector operands by calling scalar_binop
1469 for each pair of vector components. */
1471 static struct value
*
1472 vector_binop (struct value
*val1
, struct value
*val2
, enum exp_opcode op
)
1474 struct value
*val
, *tmp
, *mark
;
1475 struct type
*type1
, *type2
, *eltype1
, *eltype2
;
1476 int t1_is_vec
, t2_is_vec
, elsize
, i
;
1477 LONGEST low_bound1
, high_bound1
, low_bound2
, high_bound2
;
1479 type1
= check_typedef (value_type (val1
));
1480 type2
= check_typedef (value_type (val2
));
1482 t1_is_vec
= (type1
->code () == TYPE_CODE_ARRAY
1483 && TYPE_VECTOR (type1
)) ? 1 : 0;
1484 t2_is_vec
= (type2
->code () == TYPE_CODE_ARRAY
1485 && TYPE_VECTOR (type2
)) ? 1 : 0;
1487 if (!t1_is_vec
|| !t2_is_vec
)
1488 error (_("Vector operations are only supported among vectors"));
1490 if (!get_array_bounds (type1
, &low_bound1
, &high_bound1
)
1491 || !get_array_bounds (type2
, &low_bound2
, &high_bound2
))
1492 error (_("Could not determine the vector bounds"));
1494 eltype1
= check_typedef (TYPE_TARGET_TYPE (type1
));
1495 eltype2
= check_typedef (TYPE_TARGET_TYPE (type2
));
1496 elsize
= TYPE_LENGTH (eltype1
);
1498 if (eltype1
->code () != eltype2
->code ()
1499 || elsize
!= TYPE_LENGTH (eltype2
)
1500 || TYPE_UNSIGNED (eltype1
) != TYPE_UNSIGNED (eltype2
)
1501 || low_bound1
!= low_bound2
|| high_bound1
!= high_bound2
)
1502 error (_("Cannot perform operation on vectors with different types"));
1504 val
= allocate_value (type1
);
1505 mark
= value_mark ();
1506 for (i
= 0; i
< high_bound1
- low_bound1
+ 1; i
++)
1508 tmp
= value_binop (value_subscript (val1
, i
),
1509 value_subscript (val2
, i
), op
);
1510 memcpy (value_contents_writeable (val
) + i
* elsize
,
1511 value_contents_all (tmp
),
1514 value_free_to_mark (mark
);
1519 /* Perform a binary operation on two operands. */
1522 value_binop (struct value
*arg1
, struct value
*arg2
, enum exp_opcode op
)
1525 struct type
*type1
= check_typedef (value_type (arg1
));
1526 struct type
*type2
= check_typedef (value_type (arg2
));
1527 int t1_is_vec
= (type1
->code () == TYPE_CODE_ARRAY
1528 && TYPE_VECTOR (type1
));
1529 int t2_is_vec
= (type2
->code () == TYPE_CODE_ARRAY
1530 && TYPE_VECTOR (type2
));
1532 if (!t1_is_vec
&& !t2_is_vec
)
1533 val
= scalar_binop (arg1
, arg2
, op
);
1534 else if (t1_is_vec
&& t2_is_vec
)
1535 val
= vector_binop (arg1
, arg2
, op
);
1538 /* Widen the scalar operand to a vector. */
1539 struct value
**v
= t1_is_vec
? &arg2
: &arg1
;
1540 struct type
*t
= t1_is_vec
? type2
: type1
;
1542 if (t
->code () != TYPE_CODE_FLT
1543 && t
->code () != TYPE_CODE_DECFLOAT
1544 && !is_integral_type (t
))
1545 error (_("Argument to operation not a number or boolean."));
1547 /* Replicate the scalar value to make a vector value. */
1548 *v
= value_vector_widen (*v
, t1_is_vec
? type1
: type2
);
1550 val
= vector_binop (arg1
, arg2
, op
);
1556 /* Simulate the C operator ! -- return 1 if ARG1 contains zero. */
1559 value_logical_not (struct value
*arg1
)
1565 arg1
= coerce_array (arg1
);
1566 type1
= check_typedef (value_type (arg1
));
1568 if (is_floating_value (arg1
))
1569 return target_float_is_zero (value_contents (arg1
), type1
);
1571 len
= TYPE_LENGTH (type1
);
1572 p
= value_contents (arg1
);
1583 /* Perform a comparison on two string values (whose content are not
1584 necessarily null terminated) based on their length. */
1587 value_strcmp (struct value
*arg1
, struct value
*arg2
)
1589 int len1
= TYPE_LENGTH (value_type (arg1
));
1590 int len2
= TYPE_LENGTH (value_type (arg2
));
1591 const gdb_byte
*s1
= value_contents (arg1
);
1592 const gdb_byte
*s2
= value_contents (arg2
);
1593 int i
, len
= len1
< len2
? len1
: len2
;
1595 for (i
= 0; i
< len
; i
++)
1599 else if (s1
[i
] > s2
[i
])
1607 else if (len1
> len2
)
1613 /* Simulate the C operator == by returning a 1
1614 iff ARG1 and ARG2 have equal contents. */
1617 value_equal (struct value
*arg1
, struct value
*arg2
)
1622 struct type
*type1
, *type2
;
1623 enum type_code code1
;
1624 enum type_code code2
;
1625 int is_int1
, is_int2
;
1627 arg1
= coerce_array (arg1
);
1628 arg2
= coerce_array (arg2
);
1630 type1
= check_typedef (value_type (arg1
));
1631 type2
= check_typedef (value_type (arg2
));
1632 code1
= type1
->code ();
1633 code2
= type2
->code ();
1634 is_int1
= is_integral_type (type1
);
1635 is_int2
= is_integral_type (type2
);
1637 if (is_int1
&& is_int2
)
1638 return longest_to_int (value_as_long (value_binop (arg1
, arg2
,
1640 else if ((is_floating_value (arg1
) || is_int1
)
1641 && (is_floating_value (arg2
) || is_int2
))
1643 struct type
*eff_type_v1
, *eff_type_v2
;
1644 gdb::byte_vector v1
, v2
;
1645 v1
.resize (std::max (TYPE_LENGTH (type1
), TYPE_LENGTH (type2
)));
1646 v2
.resize (std::max (TYPE_LENGTH (type1
), TYPE_LENGTH (type2
)));
1648 value_args_as_target_float (arg1
, arg2
,
1649 v1
.data (), &eff_type_v1
,
1650 v2
.data (), &eff_type_v2
);
1652 return target_float_compare (v1
.data (), eff_type_v1
,
1653 v2
.data (), eff_type_v2
) == 0;
1656 /* FIXME: Need to promote to either CORE_ADDR or LONGEST, whichever
1658 else if (code1
== TYPE_CODE_PTR
&& is_int2
)
1659 return value_as_address (arg1
) == (CORE_ADDR
) value_as_long (arg2
);
1660 else if (code2
== TYPE_CODE_PTR
&& is_int1
)
1661 return (CORE_ADDR
) value_as_long (arg1
) == value_as_address (arg2
);
1663 else if (code1
== code2
1664 && ((len
= (int) TYPE_LENGTH (type1
))
1665 == (int) TYPE_LENGTH (type2
)))
1667 p1
= value_contents (arg1
);
1668 p2
= value_contents (arg2
);
1676 else if (code1
== TYPE_CODE_STRING
&& code2
== TYPE_CODE_STRING
)
1678 return value_strcmp (arg1
, arg2
) == 0;
1681 error (_("Invalid type combination in equality test."));
1684 /* Compare values based on their raw contents. Useful for arrays since
1685 value_equal coerces them to pointers, thus comparing just the address
1686 of the array instead of its contents. */
1689 value_equal_contents (struct value
*arg1
, struct value
*arg2
)
1691 struct type
*type1
, *type2
;
1693 type1
= check_typedef (value_type (arg1
));
1694 type2
= check_typedef (value_type (arg2
));
1696 return (type1
->code () == type2
->code ()
1697 && TYPE_LENGTH (type1
) == TYPE_LENGTH (type2
)
1698 && memcmp (value_contents (arg1
), value_contents (arg2
),
1699 TYPE_LENGTH (type1
)) == 0);
1702 /* Simulate the C operator < by returning 1
1703 iff ARG1's contents are less than ARG2's. */
1706 value_less (struct value
*arg1
, struct value
*arg2
)
1708 enum type_code code1
;
1709 enum type_code code2
;
1710 struct type
*type1
, *type2
;
1711 int is_int1
, is_int2
;
1713 arg1
= coerce_array (arg1
);
1714 arg2
= coerce_array (arg2
);
1716 type1
= check_typedef (value_type (arg1
));
1717 type2
= check_typedef (value_type (arg2
));
1718 code1
= type1
->code ();
1719 code2
= type2
->code ();
1720 is_int1
= is_integral_type (type1
);
1721 is_int2
= is_integral_type (type2
);
1723 if (is_int1
&& is_int2
)
1724 return longest_to_int (value_as_long (value_binop (arg1
, arg2
,
1726 else if ((is_floating_value (arg1
) || is_int1
)
1727 && (is_floating_value (arg2
) || is_int2
))
1729 struct type
*eff_type_v1
, *eff_type_v2
;
1730 gdb::byte_vector v1
, v2
;
1731 v1
.resize (std::max (TYPE_LENGTH (type1
), TYPE_LENGTH (type2
)));
1732 v2
.resize (std::max (TYPE_LENGTH (type1
), TYPE_LENGTH (type2
)));
1734 value_args_as_target_float (arg1
, arg2
,
1735 v1
.data (), &eff_type_v1
,
1736 v2
.data (), &eff_type_v2
);
1738 return target_float_compare (v1
.data (), eff_type_v1
,
1739 v2
.data (), eff_type_v2
) == -1;
1741 else if (code1
== TYPE_CODE_PTR
&& code2
== TYPE_CODE_PTR
)
1742 return value_as_address (arg1
) < value_as_address (arg2
);
1744 /* FIXME: Need to promote to either CORE_ADDR or LONGEST, whichever
1746 else if (code1
== TYPE_CODE_PTR
&& is_int2
)
1747 return value_as_address (arg1
) < (CORE_ADDR
) value_as_long (arg2
);
1748 else if (code2
== TYPE_CODE_PTR
&& is_int1
)
1749 return (CORE_ADDR
) value_as_long (arg1
) < value_as_address (arg2
);
1750 else if (code1
== TYPE_CODE_STRING
&& code2
== TYPE_CODE_STRING
)
1751 return value_strcmp (arg1
, arg2
) < 0;
1754 error (_("Invalid type combination in ordering comparison."));
1759 /* The unary operators +, - and ~. They free the argument ARG1. */
1762 value_pos (struct value
*arg1
)
1766 arg1
= coerce_ref (arg1
);
1767 type
= check_typedef (value_type (arg1
));
1769 if (is_integral_type (type
) || is_floating_value (arg1
)
1770 || (type
->code () == TYPE_CODE_ARRAY
&& TYPE_VECTOR (type
))
1771 || type
->code () == TYPE_CODE_COMPLEX
)
1772 return value_from_contents (type
, value_contents (arg1
));
1774 error (_("Argument to positive operation not a number."));
1778 value_neg (struct value
*arg1
)
1782 arg1
= coerce_ref (arg1
);
1783 type
= check_typedef (value_type (arg1
));
1785 if (is_integral_type (type
) || is_floating_type (type
))
1786 return value_binop (value_from_longest (type
, 0), arg1
, BINOP_SUB
);
1787 else if (type
->code () == TYPE_CODE_ARRAY
&& TYPE_VECTOR (type
))
1789 struct value
*tmp
, *val
= allocate_value (type
);
1790 struct type
*eltype
= check_typedef (TYPE_TARGET_TYPE (type
));
1792 LONGEST low_bound
, high_bound
;
1794 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
1795 error (_("Could not determine the vector bounds"));
1797 for (i
= 0; i
< high_bound
- low_bound
+ 1; i
++)
1799 tmp
= value_neg (value_subscript (arg1
, i
));
1800 memcpy (value_contents_writeable (val
) + i
* TYPE_LENGTH (eltype
),
1801 value_contents_all (tmp
), TYPE_LENGTH (eltype
));
1805 else if (type
->code () == TYPE_CODE_COMPLEX
)
1807 struct value
*real
= value_real_part (arg1
);
1808 struct value
*imag
= value_imaginary_part (arg1
);
1810 real
= value_neg (real
);
1811 imag
= value_neg (imag
);
1812 return value_literal_complex (real
, imag
, type
);
1815 error (_("Argument to negate operation not a number."));
1819 value_complement (struct value
*arg1
)
1824 arg1
= coerce_ref (arg1
);
1825 type
= check_typedef (value_type (arg1
));
1827 if (is_integral_type (type
))
1828 val
= value_from_longest (type
, ~value_as_long (arg1
));
1829 else if (type
->code () == TYPE_CODE_ARRAY
&& TYPE_VECTOR (type
))
1832 struct type
*eltype
= check_typedef (TYPE_TARGET_TYPE (type
));
1834 LONGEST low_bound
, high_bound
;
1836 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
1837 error (_("Could not determine the vector bounds"));
1839 val
= allocate_value (type
);
1840 for (i
= 0; i
< high_bound
- low_bound
+ 1; i
++)
1842 tmp
= value_complement (value_subscript (arg1
, i
));
1843 memcpy (value_contents_writeable (val
) + i
* TYPE_LENGTH (eltype
),
1844 value_contents_all (tmp
), TYPE_LENGTH (eltype
));
1847 else if (type
->code () == TYPE_CODE_COMPLEX
)
1849 /* GCC has an extension that treats ~complex as the complex
1851 struct value
*real
= value_real_part (arg1
);
1852 struct value
*imag
= value_imaginary_part (arg1
);
1854 imag
= value_neg (imag
);
1855 return value_literal_complex (real
, imag
, type
);
1858 error (_("Argument to complement operation not an integer, boolean."));
1863 /* The INDEX'th bit of SET value whose value_type is TYPE,
1864 and whose value_contents is valaddr.
1865 Return -1 if out of range, -2 other error. */
1868 value_bit_index (struct type
*type
, const gdb_byte
*valaddr
, int index
)
1870 struct gdbarch
*gdbarch
= get_type_arch (type
);
1871 LONGEST low_bound
, high_bound
;
1874 struct type
*range
= type
->index_type ();
1876 if (get_discrete_bounds (range
, &low_bound
, &high_bound
) < 0)
1878 if (index
< low_bound
|| index
> high_bound
)
1880 rel_index
= index
- low_bound
;
1881 word
= extract_unsigned_integer (valaddr
+ (rel_index
/ TARGET_CHAR_BIT
), 1,
1882 type_byte_order (type
));
1883 rel_index
%= TARGET_CHAR_BIT
;
1884 if (gdbarch_byte_order (gdbarch
) == BFD_ENDIAN_BIG
)
1885 rel_index
= TARGET_CHAR_BIT
- 1 - rel_index
;
1886 return (word
>> rel_index
) & 1;
1890 value_in (struct value
*element
, struct value
*set
)
1893 struct type
*settype
= check_typedef (value_type (set
));
1894 struct type
*eltype
= check_typedef (value_type (element
));
1896 if (eltype
->code () == TYPE_CODE_RANGE
)
1897 eltype
= TYPE_TARGET_TYPE (eltype
);
1898 if (settype
->code () != TYPE_CODE_SET
)
1899 error (_("Second argument of 'IN' has wrong type"));
1900 if (eltype
->code () != TYPE_CODE_INT
1901 && eltype
->code () != TYPE_CODE_CHAR
1902 && eltype
->code () != TYPE_CODE_ENUM
1903 && eltype
->code () != TYPE_CODE_BOOL
)
1904 error (_("First argument of 'IN' has wrong type"));
1905 member
= value_bit_index (settype
, value_contents (set
),
1906 value_as_long (element
));
1908 error (_("First argument of 'IN' not in range"));