rust: add definitions for vmstate

Add a new qemu_api module, `vmstate`. Declare a bunch of Rust
macros declared that are equivalent in spirit to the C macros in
include/migration/vmstate.h.

For example the Rust of equivalent of the C macro:

  VMSTATE_UINT32(field_name, struct_name)

is:

  vmstate_uint32!(field_name, StructName)

This breathtaking development will allow us to reach feature parity between
the Rust and C pl011 implementations.

Extracted from a patch by Manos Pitsidianakis
(https://lore.kernel.org/qemu-devel/20241024-rust-round-2-v1-4-051e7a25b978@linaro.org/).

Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/rust/qemu-api/src/lib.rs b/rust/qemu-api/src/lib.rs
index e94a15bb82..10ab3d7e63 100644
--- a/rust/qemu-api/src/lib.rs
+++ b/rust/qemu-api/src/lib.rs
@@ -26,9 +26,12 @@ unsafe impl Send for bindings::Property {}
 unsafe impl Sync for bindings::Property {}
 unsafe impl Sync for bindings::TypeInfo {}
 unsafe impl Sync for bindings::VMStateDescription {}
+unsafe impl Sync for bindings::VMStateField {}
+unsafe impl Sync for bindings::VMStateInfo {}
 
 pub mod definitions;
 pub mod device_class;
+pub mod vmstate;
 pub mod zeroable;
 
 use std::alloc::{GlobalAlloc, Layout};