diff options
Diffstat (limited to 'docs/devel/rust.rst')
| -rw-r--r-- | docs/devel/rust.rst | 41 |
1 files changed, 3 insertions, 38 deletions
diff --git a/docs/devel/rust.rst b/docs/devel/rust.rst index 88bdec1..4de8637 100644 --- a/docs/devel/rust.rst +++ b/docs/devel/rust.rst @@ -71,36 +71,9 @@ Building Rust code with ``--enable-modules`` is not supported yet. Supported tools ''''''''''''''' -QEMU supports rustc version 1.63.0 and newer. Notably, the following features +QEMU supports rustc version 1.77.0 and newer. Notably, the following features are missing: -* ``core::ffi`` (1.64.0). Use ``std::os::raw`` and ``std::ffi`` instead. - -* ``cast_mut()``/``cast_const()`` (1.65.0). Use ``as`` instead. - -* "let ... else" (1.65.0). Use ``if let`` instead. This is currently patched - in QEMU's vendored copy of the bilge crate. - -* Generic Associated Types (1.65.0) - -* ``CStr::from_bytes_with_nul()`` as a ``const`` function (1.72.0). - -* "Return position ``impl Trait`` in Traits" (1.75.0, blocker for including - the pinned-init create). - -* ``MaybeUninit::zeroed()`` as a ``const`` function (1.75.0). QEMU's - ``Zeroable`` trait can be implemented without ``MaybeUninit::zeroed()``, - so this would be just a cleanup. - -* ``c"" literals`` (stable in 1.77.0). QEMU provides a ``c_str!()`` macro - to define ``CStr`` constants easily - -* ``offset_of!`` (stable in 1.77.0). QEMU uses ``offset_of!()`` heavily; it - provides a replacement in the ``qemu_api`` crate, but it does not support - lifetime parameters and therefore ``&'a Something`` fields in the struct - may have to be replaced by ``NonNull<Something>``. *Nested* ``offset_of!`` - was only stabilized in Rust 1.82.0, but it is not used. - * inline const expression (stable in 1.79.0), currently worked around with associated constants in the ``FnCall`` trait. @@ -125,12 +98,6 @@ are missing: __ https://github.com/rust-lang/rust/pull/125258 -It is expected that QEMU will advance its minimum supported version of -rustc to 1.77.0 as soon as possible; as of January 2025, blockers -for that right now are Debian bookworm and 32-bit MIPS processors. -This unfortunately means that references to statics in constants will -remain an issue. - QEMU also supports version 0.60.x of bindgen, which is missing option ``--generate-cstr``. This option requires version 0.66.x and will be adopted as soon as supporting these older versions is not necessary @@ -153,8 +120,7 @@ QEMU includes four crates: .. [#issues] The ``pl011`` crate is synchronized with ``hw/char/pl011.c`` as of commit 02b1f7f61928. The ``hpet`` crate is synchronized as of - commit f32352ff9e. Both are lacking tracing functionality; ``hpet`` - is also lacking support for migration. + commit 1433e38cc8. Both are lacking tracing functionality. This section explains how to work with them. @@ -184,7 +150,6 @@ module status ``bitops`` complete ``callbacks`` complete ``cell`` stable -``c_str`` complete ``errno`` complete ``irq`` complete ``memory`` stable @@ -441,7 +406,7 @@ Adding dependencies Generally, the set of dependent crates is kept small. Think twice before adding a new external crate, especially if it comes with a large set of dependencies itself. Sometimes QEMU only needs a small subset of the -functionality; see for example QEMU's ``assertions`` or ``c_str`` modules. +functionality; see for example QEMU's ``assertions`` module. On top of this recommendation, adding external crates to QEMU is a slightly complicated process, mostly due to the need to teach Meson how |