proc_writemem
if (proc_writemem(td, td->td_proc, addr, &v, sizeof(v)) != sizeof(v))
n = proc_writemem(curthread, p, uaddr, kaddr, len);
if (proc_writemem(td, p, (off_t)(uintptr_t)addr, &data,
ssize_t proc_writemem(struct thread *_td, struct proc *_p, vm_offset_t _va,