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rust: add definitions for vmstate

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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>
This commit is contained in:
Manos Pitsidianakis 2024-10-25 07:55:50 +02:00 • committed by Paolo Bonzini
parent f60f3670fd
commit 0a65e4124a
5 changed files with 370 additions and 26 deletions
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1
rust/qemu-api/meson.build
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@ -5,6 +5,7 @@ _qemu_api_rs = static_library(
'src/lib.rs',
'src/definitions.rs',
'src/device_class.rs',
'src/vmstate.rs',
'src/zeroable.rs',
],
{'.' : bindings_rs},