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f351840088
offset_of! was stabilized in Rust 1.77.0. Use an alternative implemenation that was found on the Rust forums, and whose author agreed to license as MIT for use in QEMU. The alternative allows only one level of field access, but apart from this can be used just by replacing core::mem::offset_of! with qemu_api::offset_of!. The actual implementation of offset_of! is done in a declarative macro, but for simplicity and to avoid introducing an extra level of indentation, the trigger is a procedural macro #[derive(offsets)]. The procedural macro is perhaps a bit overengineered, but it helps introducing some idioms that will be useful in the future as well. Signed-off-by: Junjie Mao <junjie.mao@hotmail.com> Co-developed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
79 lines
2.3 KiB
Rust
79 lines
2.3 KiB
Rust
// Copyright 2024, Linaro Limited
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// Author(s): Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
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// SPDX-License-Identifier: GPL-2.0-or-later
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use std::{ffi::CStr, os::raw::c_void};
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use qemu_api::{
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bindings::*,
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c_str, declare_properties, define_property,
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definitions::{Class, ObjectImpl},
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device_class_init,
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zeroable::Zeroable,
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};
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#[test]
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fn test_device_decl_macros() {
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// Test that macros can compile.
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pub static VMSTATE: VMStateDescription = VMStateDescription {
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name: c_str!("name").as_ptr(),
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unmigratable: true,
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..Zeroable::ZERO
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};
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#[derive(qemu_api_macros::offsets)]
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#[repr(C)]
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#[derive(qemu_api_macros::Object)]
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pub struct DummyState {
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pub _parent: DeviceState,
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pub migrate_clock: bool,
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}
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#[repr(C)]
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pub struct DummyClass {
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pub _parent: DeviceClass,
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}
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declare_properties! {
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DUMMY_PROPERTIES,
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define_property!(
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c_str!("migrate-clk"),
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DummyState,
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migrate_clock,
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unsafe { &qdev_prop_bool },
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bool
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),
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}
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device_class_init! {
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dummy_class_init,
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props => DUMMY_PROPERTIES,
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realize_fn => None,
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legacy_reset_fn => None,
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vmsd => VMSTATE,
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}
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impl ObjectImpl for DummyState {
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type Class = DummyClass;
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const TYPE_INFO: qemu_api::bindings::TypeInfo = qemu_api::type_info! { Self };
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const TYPE_NAME: &'static CStr = c_str!("dummy");
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const PARENT_TYPE_NAME: Option<&'static CStr> = Some(TYPE_DEVICE);
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const ABSTRACT: bool = false;
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const INSTANCE_INIT: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
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const INSTANCE_POST_INIT: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
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const INSTANCE_FINALIZE: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
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}
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impl Class for DummyClass {
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const CLASS_INIT: Option<unsafe extern "C" fn(klass: *mut ObjectClass, data: *mut c_void)> =
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Some(dummy_class_init);
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const CLASS_BASE_INIT: Option<
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unsafe extern "C" fn(klass: *mut ObjectClass, data: *mut c_void),
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> = None;
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}
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unsafe {
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module_call_init(module_init_type::MODULE_INIT_QOM);
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object_unref(object_new(DummyState::TYPE_NAME.as_ptr()) as *mut _);
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}
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}
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