- sigset_t oldset, set;
-
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(sigset_t)) {
- regs->psr |= PSR_C;
- regs->u_regs[UREG_I0] = EINVAL;
- return;
- }
-
- if (copy_from_user(&set, uset, sizeof(set))) {
- regs->psr |= PSR_C;
- regs->u_regs[UREG_I0] = EFAULT;
- return;
- }
-
- sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(¤t->sighand->siglock);
- oldset = current->blocked;
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
-
- regs->pc = regs->npc;
- regs->npc += 4;
-
- /* Condition codes and return value where set here for sigpause,
- * and so got used by setup_frame, which again causes sigreturn()
- * to return -EINTR.
- */
- while (1) {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- /*
- * Return -EINTR and set condition code here,
- * so the interrupted system call actually returns
- * these.
- */
- regs->psr |= PSR_C;
- regs->u_regs[UREG_I0] = EINTR;
- if (do_signal(&oldset, regs, 0, 0))
- return;
- }