PT_LNK
CHECK_REG(PT_LNK, link);
unsafe_get_user(regs->link, &sc->gp_regs[PT_LNK], efault_out);
err |= __get_user(regs->link, &tm_sc->gp_regs[PT_LNK]);
&sc->gp_regs[PT_LNK]);
read_user_stack_32(&uregs[PT_LNK], &lr) ||
read_user_stack_64(&uregs[PT_LNK], &lr) ||
ucp->uc_mcontext.gp_regs[PT_LNK] = random();
ucp->uc_link->uc_mcontext.gp_regs[PT_LNK] = random();