blob: 555817bdca9d5c01d281115b941dbcb33b595f88 [file] [log] [blame]
/*
* Copyright (c) 2021 Henrik Brix Andersen <henrik@brixandersen.dk>
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/toolchain.h>
GTEXT(__soc_handle_irq)
/*
* SOC-specific function to handle pending IRQ number generating the interrupt.
* Exception number is given as parameter via register a0.
*/
SECTION_FUNC(exception.other, __soc_handle_irq)
/*
* The the MIP CSR on the NEORV32 is read-only and can thus not be used for
* clearing a pending IRQ. Instead we disable the IRQ in the MIE CSR and
* re-enable it (if it was enabled when clearing).
*/
li t1, 1
sll t0, t1, a0
csrrc t2, mie, t0
and t1, t2, t0
csrrs t2, mie, t1
/* Return */
ret