uint32_t ide_data_readl(void *opaque, uint32_t addr) { IDEBus *bus = opaque; IDEState *s = idebus_active_if(bus); uint8_t *p; int ret; /* PIO data access allowed only when DRQ bit is set. The result of a read * during PIO in is indeterminate, return 0 and don't move forward. */ if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) { p = s->data_ptr; ret = cpu_to_le32(*(uint32_t *)p); p += 4; s->data_ptr = p; if (p >= s->data_end) s->end_transfer_func(s); return ret;