Introduce var_msym_value_operation
This adds class var_msym_value_operation, which implements OP_VAR_MSYM_VALUE. A new method is added to class operation in order to support a special case in minsym evaluation. gdb/ChangeLog 2021-03-08 Tom Tromey <tom@tromey.com> * expression.h (class operation) <set_outermost>: New method. * expop.h (class var_msym_value_operation): New. * eval.c (eval_op_var_msym_value): No longer static. (var_msym_value_operation::evaluate_for_address) (var_msym_value_operation::evaluate_for_sizeof) (var_msym_value_operation::evaluate_for_cast): New methods. * ax-gdb.c (var_msym_value_operation::do_generate_ax): New method.
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@ -165,6 +165,10 @@ public:
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/* Print this operation to STREAM. */
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virtual void dump (struct ui_file *stream, int depth) const = 0;
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/* Call to indicate that this is the outermost operation in the
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expression. This should almost never be overridden. */
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virtual void set_outermost () { }
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protected:
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/* Called by generate_ax to do the work for this particular
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