Function receive

euralios_std/src/syscalls.rs:237–256

Wait for a message to be received

(handle: &CommHandle)

/// Wait for a message to be received
pub fn receive(handle: &CommHandle) -> Result<Message, SyscallError> {
    let ctrl: u64;
    let (data1, data2, data3): (u64, u64, u64);
    unsafe {
        asm!("syscall",
             in("rax") SYSCALL_RECEIVE,
             in("rdi") handle.0,
             lateout("rax") ctrl,
             lateout("rdi") data1,
             lateout("rsi") data2,
             lateout("rdx") data3,
             out("rcx") _,
             out("r11") _);
    }
    let err = ctrl & 0xFF;
    if err == 0 {
        return Ok(Message::from_values(ctrl, data1, data2, data3));
    }
    Err(SyscallError(err))
}

/// Send a message and wait for it to be received
///