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// Copyright 2024, Linaro Limited
// Author(s): Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
// SPDX-License-Identifier: GPL-2.0-or-later
use std::sync::OnceLock;
use crate::bindings::Property;
#[macro_export]
macro_rules! device_class_init {
($func:ident, props => $props:ident, realize_fn => $realize_fn:expr, legacy_reset_fn => $legacy_reset_fn:expr, vmsd => $vmsd:ident$(,)*) => {
#[no_mangle]
pub unsafe extern "C" fn $func(
klass: *mut $crate::bindings::ObjectClass,
_: *mut ::core::ffi::c_void,
) {
let mut dc =
::core::ptr::NonNull::new(klass.cast::<$crate::bindings::DeviceClass>()).unwrap();
unsafe {
dc.as_mut().realize = $realize_fn;
dc.as_mut().vmsd = &$vmsd;
$crate::bindings::device_class_set_legacy_reset(dc.as_mut(), $legacy_reset_fn);
$crate::bindings::device_class_set_props(dc.as_mut(), $props.as_mut_ptr());
}
}
};
}
#[macro_export]
macro_rules! define_property {
($name:expr, $state:ty, $field:expr, $prop:expr, $type:expr, default = $defval:expr$(,)*) => {
$crate::bindings::Property {
name: {
#[used]
static _TEMP: &::core::ffi::CStr = $name;
_TEMP.as_ptr()
},
info: $prop,
offset: ::core::mem::offset_of!($state, $field)
.try_into()
.expect("Could not fit offset value to type"),
bitnr: 0,
bitmask: 0,
set_default: true,
defval: $crate::bindings::Property__bindgen_ty_1 { u: $defval.into() },
arrayoffset: 0,
arrayinfo: ::core::ptr::null(),
arrayfieldsize: 0,
link_type: ::core::ptr::null(),
}
};
($name:expr, $state:ty, $field:expr, $prop:expr, $type:expr$(,)*) => {
$crate::bindings::Property {
name: {
#[used]
static _TEMP: &::core::ffi::CStr = $name;
_TEMP.as_ptr()
},
info: $prop,
offset: ::core::mem::offset_of!($state, $field)
.try_into()
.expect("Could not fit offset value to type"),
bitnr: 0,
bitmask: 0,
set_default: false,
defval: $crate::bindings::Property__bindgen_ty_1 { i: 0 },
arrayoffset: 0,
arrayinfo: ::core::ptr::null(),
arrayfieldsize: 0,
link_type: ::core::ptr::null(),
}
};
}
#[repr(C)]
pub struct Properties<const N: usize>(pub OnceLock<[Property; N]>, pub fn() -> [Property; N]);
impl<const N: usize> Properties<N> {
pub fn as_mut_ptr(&mut self) -> *mut Property {
_ = self.0.get_or_init(self.1);
self.0.get_mut().unwrap().as_mut_ptr()
}
}
#[macro_export]
macro_rules! declare_properties {
($ident:ident, $($prop:expr),*$(,)*) => {
const fn _calc_prop_len() -> usize {
let mut len = 1;
$({
_ = stringify!($prop);
len += 1;
})*
len
}
const PROP_LEN: usize = _calc_prop_len();
fn _make_properties() -> [$crate::bindings::Property; PROP_LEN] {
[
$($prop),*,
unsafe { ::core::mem::MaybeUninit::<$crate::bindings::Property>::zeroed().assume_init() },
]
}
#[no_mangle]
pub static mut $ident: $crate::device_class::Properties<PROP_LEN> = $crate::device_class::Properties(::std::sync::OnceLock::new(), _make_properties);
};
}
#[macro_export]
macro_rules! vm_state_description {
($(#[$outer:meta])*
$name:ident,
$(name: $vname:expr,)*
$(unmigratable: $um_val:expr,)*
) => {
#[used]
$(#[$outer])*
pub static $name: $crate::bindings::VMStateDescription = $crate::bindings::VMStateDescription {
$(name: {
#[used]
static VMSTATE_NAME: &::core::ffi::CStr = $vname;
$vname.as_ptr()
},)*
unmigratable: true,
..unsafe { ::core::mem::MaybeUninit::<$crate::bindings::VMStateDescription>::zeroed().assume_init() }
};
}
}
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