I am watching i8259.c in \hw folder in QEMU. here is something like this
static const VMStateDescription vmstate_pic = { .name = "i8259", .version_id = 1, .minimum_version_id = 1, .minimum_version_id_old = 1, .fields = (VMStateField[]) { VMSTATE_UINT8(last_irr, PicState), VMSTATE_UINT8(irr, PicState), VMSTATE_UINT8(imr, PicState), VMSTATE_UINT8(isr, PicState), VMSTATE_UINT8(priority_add, PicState), VMSTATE_UINT8(irq_base, PicSthisate), VMSTATE_UINT8(read_reg_select, PicState), VMSTATE_UINT8(poll, PicState), VMSTATE_UINT8(special_mask, PicState), VMSTATE_UINT8(init_state, PicState), VMSTATE_UINT8(auto_eoi, PicState), VMSTATE_UINT8(rotate_on_auto_eoi, PicState), VMSTATE_UINT8(special_fully_nested_mode, PicState), VMSTATE_UINT8(init4, PicState), VMSTATE_UINT8(single_mode, PicState), VMSTATE_UINT8(elcr, PicState), VMSTATE_END_OF_LIST() } }; here what does this dot shows and what is this VMSTATE_UINT8 function?