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Split out eval_op_alignof

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This splits UNOP_ALIGNOF into a new function for future use.

gdb/ChangeLog
2021-03-08  Tom Tromey  <tom@tromey.com>

	* eval.c (eval_op_alignof): New function.
	(evaluate_subexp_standard): Use it.
This commit is contained in:
Tom Tromey 2021-03-08 07:27:57 -07:00
parent 786f70ee4d
commit acee94686b
2 changed files with 23 additions and 10 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2021-03-08 Tom Tromey <tom@tromey.com>
* eval.c (eval_op_alignof): New function.
(evaluate_subexp_standard): Use it.
2021-03-08 Tom Tromey <tom@tromey.com>
* eval.c (eval_op_ind): New function.

28
gdb/eval.c
View File

@ -1878,6 +1878,22 @@ eval_op_ind (struct type *expect_type, struct expression *exp,
return value_ind (arg1);
}
/* A helper function for UNOP_ALIGNOF. */
static struct value *
eval_op_alignof (struct type *expect_type, struct expression *exp,
enum noside noside,
struct value *arg1)
{
struct type *type = value_type (arg1);
/* FIXME: This should be size_t. */
struct type *size_type = builtin_type (exp->gdbarch)->builtin_int;
ULONGEST align = type_align (type);
if (align == 0)
error (_("could not determine alignment of type"));
return value_from_longest (size_type, align);
}
struct value *
evaluate_subexp_standard (struct type *expect_type,
struct expression *exp, int *pos,
@ -2769,16 +2785,8 @@ evaluate_subexp_standard (struct type *expect_type,
return evaluate_subexp_for_sizeof (exp, pos, noside);
case UNOP_ALIGNOF:
{
type = value_type (
evaluate_subexp (nullptr, exp, pos, EVAL_AVOID_SIDE_EFFECTS));
/* FIXME: This should be size_t. */
struct type *size_type = builtin_type (exp->gdbarch)->builtin_int;
ULONGEST align = type_align (type);
if (align == 0)
error (_("could not determine alignment of type"));
return value_from_longest (size_type, align);
}
arg1 = evaluate_subexp (nullptr, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
return eval_op_alignof (expect_type, exp, noside, arg1);
case UNOP_CAST:
(*pos) += 2;