rust: add PL011 device model

This commit adds a re-implementation of hw/char/pl011.c in Rust.

How to build:

1. Configure a QEMU build with:
   --enable-system --target-list=aarch64-softmmu --enable-rust
2. Launching a VM with qemu-system-aarch64 should use the Rust version
   of the pl011 device

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: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Link: https://lore.kernel.org/r/20241024-rust-round-2-v1-2-051e7a25b978@linaro.org

16 files changed, 295 insertions, 0 deletions

diff --git a/subprojects/.gitignore b/subprojects/.gitignore
index b6888182ca..50f173f90d 100644
--- a/subprojects/.gitignore
+++ b/subprojects/.gitignore
@@ -6,6 +6,13 @@
 /keycodemapdb
 /libvfio-user
 /slirp
+/arbitrary-int-1.2.7
+/bilge-0.2.0
+/bilge-impl-0.2.0
+/either-1.12.0
+/itertools-0.11.0
+/proc-macro-error-1.0.4
+/proc-macro-error-attr-1.0.4
 /proc-macro2-1.0.84
 /quote-1.0.36
 /syn-2.0.66
diff --git a/subprojects/arbitrary-int-1-rs.wrap b/subprojects/arbitrary-int-1-rs.wrap
new file mode 100644
index 0000000000..e580538a87
--- /dev/null
+++ b/subprojects/arbitrary-int-1-rs.wrap
@@ -0,0 +1,7 @@
+[wrap-file]
+directory = arbitrary-int-1.2.7
+source_url = https://crates.io/api/v1/crates/arbitrary-int/1.2.7/download
+source_filename = arbitrary-int-1.2.7.tar.gz
+source_hash = c84fc003e338a6f69fbd4f7fe9f92b535ff13e9af8997f3b14b6ddff8b1df46d
+#method = cargo
+patch_directory = arbitrary-int-1-rs
diff --git a/subprojects/bilge-0.2-rs.wrap b/subprojects/bilge-0.2-rs.wrap
new file mode 100644
index 0000000000..7a4339d298
--- /dev/null
+++ b/subprojects/bilge-0.2-rs.wrap
@@ -0,0 +1,7 @@
+[wrap-file]
+directory = bilge-0.2.0
+source_url = https://crates.io/api/v1/crates/bilge/0.2.0/download
+source_filename = bilge-0.2.0.tar.gz
+source_hash = dc707ed8ebf81de5cd6c7f48f54b4c8621760926cdf35a57000747c512e67b57
+#method = cargo
+patch_directory = bilge-0.2-rs
diff --git a/subprojects/bilge-impl-0.2-rs.wrap b/subprojects/bilge-impl-0.2-rs.wrap
new file mode 100644
index 0000000000..eefb10c36c
--- /dev/null
+++ b/subprojects/bilge-impl-0.2-rs.wrap
@@ -0,0 +1,7 @@
+[wrap-file]
+directory = bilge-impl-0.2.0
+source_url = https://crates.io/api/v1/crates/bilge-impl/0.2.0/download
+source_filename = bilge-impl-0.2.0.tar.gz
+source_hash = feb11e002038ad243af39c2068c8a72bcf147acf05025dcdb916fcc000adb2d8
+#method = cargo
+patch_directory = bilge-impl-0.2-rs
diff --git a/subprojects/either-1-rs.wrap b/subprojects/either-1-rs.wrap
new file mode 100644
index 0000000000..6046712036
--- /dev/null
+++ b/subprojects/either-1-rs.wrap
@@ -0,0 +1,7 @@
+[wrap-file]
+directory = either-1.12.0
+source_url = https://crates.io/api/v1/crates/either/1.12.0/download
+source_filename = either-1.12.0.tar.gz
+source_hash = 3dca9240753cf90908d7e4aac30f630662b02aebaa1b58a3cadabdb23385b58b
+#method = cargo
+patch_directory = either-1-rs
diff --git a/subprojects/itertools-0.11-rs.wrap b/subprojects/itertools-0.11-rs.wrap
new file mode 100644
index 0000000000..66b05252cd
--- /dev/null
+++ b/subprojects/itertools-0.11-rs.wrap
@@ -0,0 +1,7 @@
+[wrap-file]
+directory = itertools-0.11.0
+source_url = https://crates.io/api/v1/crates/itertools/0.11.0/download
+source_filename = itertools-0.11.0.tar.gz
+source_hash = b1c173a5686ce8bfa551b3563d0c2170bf24ca44da99c7ca4bfdab5418c3fe57
+#method = cargo
+patch_directory = itertools-0.11-rs
diff --git a/subprojects/packagefiles/arbitrary-int-1-rs/meson.build b/subprojects/packagefiles/arbitrary-int-1-rs/meson.build
new file mode 100644
index 0000000000..34a189cbae
--- /dev/null
+++ b/subprojects/packagefiles/arbitrary-int-1-rs/meson.build
@@ -0,0 +1,19 @@
+project('arbitrary-int-1-rs', 'rust',
+  version: '1.2.7',
+  license: 'MIT',
+  default_options: [])
+
+_arbitrary_int_rs = static_library(
+  'arbitrary_int',
+  files('src/lib.rs'),
+  gnu_symbol_visibility: 'hidden',
+  override_options: ['rust_std=2021', 'build.rust_std=2021'],
+  rust_abi: 'rust',
+  dependencies: [],
+)
+
+arbitrary_int_dep = declare_dependency(
+  link_with: _arbitrary_int_rs,
+)
+
+meson.override_dependency('arbitrary-int-1-rs', arbitrary_int_dep)
diff --git a/subprojects/packagefiles/bilge-0.2-rs/meson.build b/subprojects/packagefiles/bilge-0.2-rs/meson.build
new file mode 100644
index 0000000000..a6ed4a8f0c
--- /dev/null
+++ b/subprojects/packagefiles/bilge-0.2-rs/meson.build
@@ -0,0 +1,29 @@
+project(
+  'bilge-0.2-rs',
+  'rust',
+  version : '0.2.0',
+  license : 'MIT or Apache-2.0',
+)
+
+subproject('arbitrary-int-1-rs', required: true)
+subproject('bilge-impl-0.2-rs', required: true)
+
+arbitrary_int_dep = dependency('arbitrary-int-1-rs')
+bilge_impl_dep = dependency('bilge-impl-0.2-rs')
+
+lib = static_library(
+  'bilge',
+  'src/lib.rs',
+  override_options : ['rust_std=2021', 'build.rust_std=2021'],
+  rust_abi : 'rust',
+  dependencies: [
+    arbitrary_int_dep,
+    bilge_impl_dep,
+  ],
+)
+
+bilge_dep = declare_dependency(
+  link_with : [lib],
+)
+
+meson.override_dependency('bilge-0.2-rs', bilge_dep)
diff --git a/subprojects/packagefiles/bilge-impl-0.2-rs/meson.build b/subprojects/packagefiles/bilge-impl-0.2-rs/meson.build
new file mode 100644
index 0000000000..80243c7024
--- /dev/null
+++ b/subprojects/packagefiles/bilge-impl-0.2-rs/meson.build
@@ -0,0 +1,45 @@
+project('bilge-impl-0.2-rs', 'rust',
+  version: '0.2.0',
+  license: 'MIT OR Apache-2.0',
+  default_options: [])
+
+subproject('itertools-0.11-rs', required: true)
+subproject('proc-macro-error-attr-1-rs', required: true)
+subproject('proc-macro-error-1-rs', required: true)
+subproject('quote-1-rs', required: true)
+subproject('syn-2-rs', required: true)
+subproject('proc-macro2-1-rs', required: true)
+
+itertools_dep = dependency('itertools-0.11-rs', native: true)
+proc_macro_error_attr_dep = dependency('proc-macro-error-attr-1-rs', native: true)
+proc_macro_error_dep = dependency('proc-macro-error-1-rs', native: true)
+quote_dep = dependency('quote-1-rs', native: true)
+syn_dep = dependency('syn-2-rs', native: true)
+proc_macro2_dep = dependency('proc-macro2-1-rs', native: true)
+
+rust = import('rust')
+
+_bilge_impl_rs = rust.proc_macro(
+  'bilge_impl',
+  files('src/lib.rs'),
+  override_options: ['rust_std=2021', 'build.rust_std=2021'],
+  rust_args: [
+    '--cfg', 'use_fallback',
+    '--cfg', 'feature="syn-error"',
+    '--cfg', 'feature="proc-macro"',
+  ],
+  dependencies: [
+    itertools_dep,
+    proc_macro_error_attr_dep,
+    proc_macro_error_dep,
+    quote_dep,
+    syn_dep,
+    proc_macro2_dep,
+  ],
+)
+
+bilge_impl_dep = declare_dependency(
+  link_with: _bilge_impl_rs,
+)
+
+meson.override_dependency('bilge-impl-0.2-rs', bilge_impl_dep)
diff --git a/subprojects/packagefiles/either-1-rs/meson.build b/subprojects/packagefiles/either-1-rs/meson.build
new file mode 100644
index 0000000000..a5842eb3a6
--- /dev/null
+++ b/subprojects/packagefiles/either-1-rs/meson.build
@@ -0,0 +1,24 @@
+project('either-1-rs', 'rust',
+  version: '1.12.0',
+  license: 'MIT OR Apache-2.0',
+  default_options: [])
+
+_either_rs = static_library(
+  'either',
+  files('src/lib.rs'),
+  gnu_symbol_visibility: 'hidden',
+  override_options: ['rust_std=2018', 'build.rust_std=2018'],
+  rust_abi: 'rust',
+  rust_args: [
+    '--cfg', 'feature="use_std"',
+    '--cfg', 'feature="use_alloc"',
+  ],
+  dependencies: [],
+  native: true,
+)
+
+either_dep = declare_dependency(
+  link_with: _either_rs,
+)
+
+meson.override_dependency('either-1-rs', either_dep, native: true)
diff --git a/subprojects/packagefiles/itertools-0.11-rs/meson.build b/subprojects/packagefiles/itertools-0.11-rs/meson.build
new file mode 100644
index 0000000000..13d2d27019
--- /dev/null
+++ b/subprojects/packagefiles/itertools-0.11-rs/meson.build
@@ -0,0 +1,30 @@
+project('itertools-0.11-rs', 'rust',
+  version: '0.11.0',
+  license: 'MIT OR Apache-2.0',
+  default_options: [])
+
+subproject('either-1-rs', required: true)
+
+either_dep = dependency('either-1-rs', native: true)
+
+_itertools_rs = static_library(
+  'itertools',
+  files('src/lib.rs'),
+  gnu_symbol_visibility: 'hidden',
+  override_options: ['rust_std=2018', 'build.rust_std=2018'],
+  rust_abi: 'rust',
+  rust_args: [
+    '--cfg', 'feature="use_std"',
+    '--cfg', 'feature="use_alloc"',
+  ],
+  dependencies: [
+    either_dep,
+  ],
+  native: true,
+)
+
+itertools_dep = declare_dependency(
+  link_with: _itertools_rs,
+)
+
+meson.override_dependency('itertools-0.11-rs', itertools_dep, native: true)
diff --git a/subprojects/packagefiles/proc-macro-error-1-rs/meson.build b/subprojects/packagefiles/proc-macro-error-1-rs/meson.build
new file mode 100644
index 0000000000..38ea7b89d3
--- /dev/null
+++ b/subprojects/packagefiles/proc-macro-error-1-rs/meson.build
@@ -0,0 +1,40 @@
+project('proc-macro-error-1-rs', 'rust',
+  version: '1.0.4',
+  license: 'MIT OR Apache-2.0',
+  default_options: [])
+
+subproject('proc-macro-error-attr-1-rs', required: true)
+subproject('quote-1-rs', required: true)
+subproject('syn-2-rs', required: true)
+subproject('proc-macro2-1-rs', required: true)
+
+proc_macro_error_attr_dep = dependency('proc-macro-error-attr-1-rs', native: true)
+proc_macro2_dep = dependency('proc-macro2-1-rs', native: true)
+quote_dep = dependency('quote-1-rs', native: true)
+syn_dep = dependency('syn-2-rs', native: true)
+
+_proc_macro_error_rs = static_library(
+  'proc_macro_error',
+  files('src/lib.rs'),
+  override_options: ['rust_std=2018', 'build.rust_std=2018'],
+  rust_abi: 'rust',
+  rust_args: [
+    '--cfg', 'use_fallback',
+    '--cfg', 'feature="syn-error"',
+    '--cfg', 'feature="proc-macro"',
+    '-A', 'non_fmt_panics'
+  ],
+  dependencies: [
+    proc_macro_error_attr_dep,
+    proc_macro2_dep,
+    quote_dep,
+    syn_dep,
+  ],
+  native: true,
+)
+
+proc_macro_error_dep = declare_dependency(
+  link_with: _proc_macro_error_rs,
+)
+
+meson.override_dependency('proc-macro-error-1-rs', proc_macro_error_dep, native: true)
diff --git a/subprojects/packagefiles/proc-macro-error-attr-1-rs/meson.build b/subprojects/packagefiles/proc-macro-error-attr-1-rs/meson.build
new file mode 100644
index 0000000000..d900c54cfd
--- /dev/null
+++ b/subprojects/packagefiles/proc-macro-error-attr-1-rs/meson.build
@@ -0,0 +1,32 @@
+project('proc-macro-error-attr-1-rs', 'rust',
+  version: '1.12.0',
+  license: 'MIT OR Apache-2.0',
+  default_options: [])
+
+subproject('proc-macro2-1-rs', required: true)
+subproject('quote-1-rs', required: true)
+
+proc_macro2_dep = dependency('proc-macro2-1-rs', native: true)
+quote_dep = dependency('quote-1-rs', native: true)
+
+rust = import('rust')
+_proc_macro_error_attr_rs = rust.proc_macro(
+  'proc_macro_error_attr',
+  files('src/lib.rs'),
+  override_options: ['rust_std=2018', 'build.rust_std=2018'],
+  rust_args: [
+    '--cfg', 'use_fallback',
+    '--cfg', 'feature="syn-error"',
+    '--cfg', 'feature="proc-macro"'
+  ],
+  dependencies: [
+    proc_macro2_dep,
+    quote_dep,
+  ],
+)
+
+proc_macro_error_attr_dep = declare_dependency(
+  link_with: _proc_macro_error_attr_rs,
+)
+
+meson.override_dependency('proc-macro-error-attr-1-rs', proc_macro_error_attr_dep, native: true)
diff --git a/subprojects/packagefiles/unicode-ident-1-rs/meson.build b/subprojects/packagefiles/unicode-ident-1-rs/meson.build
new file mode 100644
index 0000000000..54f2376854
--- /dev/null
+++ b/subprojects/packagefiles/unicode-ident-1-rs/meson.build
@@ -0,0 +1,20 @@
+project('unicode-ident-1-rs', 'rust',
+  version: '1.0.12',
+  license: '(MIT OR Apache-2.0) AND Unicode-DFS-2016',
+  default_options: [])
+
+_unicode_ident_rs = static_library(
+  'unicode_ident',
+  files('src/lib.rs'),
+  gnu_symbol_visibility: 'hidden',
+  override_options: ['rust_std=2021', 'build.rust_std=2021'],
+  rust_abi: 'rust',
+  dependencies: [],
+  native: true,
+)
+
+unicode_ident_dep = declare_dependency(
+  link_with: _unicode_ident_rs,
+)
+
+meson.override_dependency('unicode-ident-1-rs', unicode_ident_dep, native: true)
diff --git a/subprojects/proc-macro-error-1-rs.wrap b/subprojects/proc-macro-error-1-rs.wrap
new file mode 100644
index 0000000000..b7db03b06a
--- /dev/null
+++ b/subprojects/proc-macro-error-1-rs.wrap
@@ -0,0 +1,7 @@
+[wrap-file]
+directory = proc-macro-error-1.0.4
+source_url = https://crates.io/api/v1/crates/proc-macro-error/1.0.4/download
+source_filename = proc-macro-error-1.0.4.tar.gz
+source_hash = da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c
+#method = cargo
+patch_directory = proc-macro-error-1-rs
diff --git a/subprojects/proc-macro-error-attr-1-rs.wrap b/subprojects/proc-macro-error-attr-1-rs.wrap
new file mode 100644
index 0000000000..d13d8a239a
--- /dev/null
+++ b/subprojects/proc-macro-error-attr-1-rs.wrap
@@ -0,0 +1,7 @@
+[wrap-file]
+directory = proc-macro-error-attr-1.0.4
+source_url = https://crates.io/api/v1/crates/proc-macro-error-attr/1.0.4/download
+source_filename = proc-macro-error-attr-1.0.4.tar.gz
+source_hash = a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869
+#method = cargo
+patch_directory = proc-macro-error-attr-1-rs