.. Copyright 1988-2022 Free Software Foundation, Inc. This is part of the GCC manual. For copying conditions, see the copyright.rst file. .. _visium-function-attributes: Visium Function Attributes ^^^^^^^^^^^^^^^^^^^^^^^^^^ These function attributes are supported by the Visium back end: .. index:: interrupt function attribute, Visium .. visium-fn-attr:: interrupt, interrupt_handler .. visium-fn-attr:: interrupt Use this attribute to indicate that the specified function is an interrupt handler. The compiler generates function entry and exit sequences suitable for use in an interrupt handler when this attribute is present.