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6.31.25. RX Function Attributes

6.31.25 RX Function Attributes

These function attributes are supported by the RX back end:

fast_interrupt
Use this attribute on the RX port to indicate that the specified function is a fast interrupt handler. This is just like the interrupt attribute, except that freit is used to return instead of reit.
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.

On RX targets, you may specify one or more vector numbers as arguments to the attribute, as well as naming an alternate table name. Parameters