176 sc_vtb_copy(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2, int to, int count)  in sc_vtb_copy()  argument
179 	if (vtb2->vtb_type == VTB_FRAMEBUFFER)  in sc_vtb_copy()
181 			   sc_vtb_pointer(vtb2, to),  in sc_vtb_copy()
185 			     sc_vtb_pointer(vtb2, to),  in sc_vtb_copy()
189 		      (void *)sc_vtb_pointer(vtb2, to),  in sc_vtb_copy()
194 sc_vtb_append(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2, int count)  in sc_vtb_append()  argument
198 	if (vtb2->vtb_type != VTB_RINGBUFFER)  in sc_vtb_append()
202 		len = imin(count, vtb2->vtb_size - vtb2->vtb_tail);  in sc_vtb_append()
205 				     sc_vtb_pointer(vtb2, vtb2->vtb_tail),  in sc_vtb_append()
209 			      (void *)sc_vtb_pointer(vtb2, vtb2->vtb_tail),  in sc_vtb_append()
213 		vtb2->vtb_tail = vtb_wrap(vtb2, vtb2->vtb_tail, len);  in sc_vtb_append()