Function shim_api_syscall 

#[unsafe(no_mangle)]
pub unsafe extern "C-unwind" fn shim_api_syscall(
    n: c_long,
    arg1: u64,
    arg2: u64,
    arg3: u64,
    arg4: u64,
    arg5: u64,
    arg6: u64,
) -> i64

Safety

The syscall itself must be safe to make.