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* rust: build integration test for the qemu_api cratePaolo Bonzini2024-11-052-52/+0
| | | | | | | | | | | | Adjust the integration test to compile with a subset of QEMU object files, and make it actually create an object of the class it defines. Follow the Rust filesystem conventions, where tests go in tests/ if they use the library in the same way any other code would. Reviewed-by: Junjie Mao <junjie.mao@hotmail.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* rust: modernize link_section usage for ELF platformsPaolo Bonzini2024-11-051-4/+10
| | | | | | | | | | | | | | | Some newer ABI implementations do not provide .ctors; and while some linkers rewrite .ctors into .init_array, not all of them do. Use the newer .init_array ABI, which works more reliably, and apply it to all non-Apple, non-Windows platforms. This is similar to how the ctor crate operates; without this change, "#[derive(Object)]" does not work on Fedora 41. Reviewed-by: Junjie Mao <junjie.mao@hotmail.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Zhao Liu <zhao1.liu@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* rust: remove uses of #[no_mangle]Paolo Bonzini2024-11-052-3/+0
| | | | | | | | | | Mangled symbols do not cause any issue; disabling mangling is only useful if C headers reference the Rust function, which is not the case here. Reviewed-by: Junjie Mao <junjie.mao@hotmail.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Zhao Liu <zhao1.liu@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* rust: do not use --no-size_t-is-usizePaolo Bonzini2024-11-051-3/+3
| | | | | | | | | | | This is not necessary and makes it harder to write code that is portable between 32- and 64-bit systems: it adds extra casts even though size_of, align_of or offset_of already return the right type. Reviewed-by: Junjie Mao <junjie.mao@hotmail.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Zhao Liu <zhao1.liu@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* meson: pass rustc_args when building all cratesPaolo Bonzini2024-11-051-4/+6
| | | | | | | | | rustc_args is needed to smooth the difference in warnings between the various versions of rustc. Always include those arguments. Reviewed-by: Junjie Mao <junjie.mao@hotmail.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* rust: add crate to expose bindings and interfacesManos Pitsidianakis2024-10-114-0/+440
Add rust/qemu-api, which exposes rust-bindgen generated FFI bindings and provides some declaration macros for symbols visible to the rest of QEMU. Co-authored-by: Junjie Mao <junjie.mao@intel.com> Co-authored-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Junjie Mao <junjie.mao@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org> Link: https://lore.kernel.org/r/0fb23fbe211761b263aacec03deaf85c0cc39995.1727961605.git.manos.pitsidianakis@linaro.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>