mq_timedreceive

receive a message from a message queue

sys_mq_timedreceive(mqd_t mqdes, char *msg_ptr, size_t msg_len, unsigned int *msg_prio, const struct __kernel_timespec *abs_timeout)

register	value
`a7`	183, the syscall number
`a0`	mqd_t mqdes
`a1`	char *msg_ptr
`a2`	size_t msg_len
`a3`	unsigned int *msg_prio
`a4`	const struct __kernel_timespec *abs_timeout
`a0`	the return value

Then run ecall to enter the kernel.

Same syscall on other architectures