u_memcpya
args->push.s = u_memcpya(pushs, pushc, sizeof(*args->push.s));
*s = u_memcpya(ins, inc, sizeof(**s));
*s = u_memcpya(outs, outc, sizeof(**s));
push = u_memcpya(req->push, req->nr_push, sizeof(*push));
bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
args->op.s = u_memcpya(ops, opc,
*s = u_memcpya(ins, inc, sizeof(**s));
*s = u_memcpya(outs, outc, sizeof(**s));