syscall.sh / nios2 / io_setup

io_setup

create an asynchronous I/O context

sys_io_setup(unsigned nr_events, aio_context_t *ctxp)
number0 (0x0)
abicommon
entry pointsys_io_setup
sinceLinux 3.19
man pageio_setup(2)
sourceelixir.bootlin.com

Registers

registervalue
r20, the syscall number
r4unsigned nr_events
r5aio_context_t *ctxp
r2the return value

Then run trap to enter the kernel.

Same syscall on other architectures

Get this as JSON: https://api.syscall.sh/v2/syscalls/nios2/io_setup