get_uf_mem
get_uf_mem(sizeof(elf_vrreg_t), ucp->uc_mcontext.v_regs);
get_uf_mem(sizeof(elf_vrreg_t), ucp->uc_link->uc_mcontext.v_regs);
ucp->uc_link = get_uf_mem(sizeof(ucontext_t), ucp->uc_link);
ss.ss_sp = get_uf_mem(SIGSTKSZ, NULL);