From: Marc-André Lureau <marcandre.lur...@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
MAINTAINERS | 1 +
rust/qemu-api/wrapper.h | 3 --
rust/system/wrapper.h | 29 +++++++++++++
rust/Cargo.lock | 13 ++++++
rust/Cargo.toml | 1 +
rust/bql/src/cell.rs | 5 +--
rust/hw/char/pl011/Cargo.toml | 1 +
rust/hw/char/pl011/meson.build | 1 +
rust/hw/char/pl011/src/device.rs | 2 +-
rust/hw/timer/hpet/Cargo.toml | 1 +
rust/hw/timer/hpet/meson.build | 1 +
rust/hw/timer/hpet/src/device.rs | 12 +++---
rust/meson.build | 1 +
rust/qemu-api/Cargo.toml | 1 +
rust/qemu-api/meson.build | 7 +--
rust/qemu-api/src/bindings.rs | 14 +-----
rust/qemu-api/src/lib.rs | 1 -
rust/qemu-api/src/sysbus.rs | 2 +-
rust/system/Cargo.toml | 22 ++++++++++
rust/system/build.rs | 43 +++++++++++++++++++
rust/system/meson.build | 57 +++++++++++++++++++++++++
rust/system/src/bindings.rs | 41 ++++++++++++++++++
rust/system/src/lib.rs | 4 ++
rust/{qemu-api => system}/src/memory.rs | 2 +-
24 files changed, 232 insertions(+), 33 deletions(-)
create mode 100644 rust/system/wrapper.h
create mode 100644 rust/system/Cargo.toml
create mode 100644 rust/system/build.rs
create mode 100644 rust/system/meson.build
create mode 100644 rust/system/src/bindings.rs
create mode 100644 rust/system/src/lib.rs
rename rust/{qemu-api => system}/src/memory.rs (99%)
diff --git a/MAINTAINERS b/MAINTAINERS
index 4ab89b208c..ce8bb3c076 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3518,6 +3518,7 @@ F: rust/qemu-api
F: rust/qemu-api-macros
F: rust/qom/
F: rust/rustfmt.toml
+F: rust/system/
F: rust/util/
F: scripts/get-wraps-from-cargo-registry.py
diff --git a/rust/qemu-api/wrapper.h b/rust/qemu-api/wrapper.h
index 07dbc9987a..564733b903 100644
--- a/rust/qemu-api/wrapper.h
+++ b/rust/qemu-api/wrapper.h
@@ -49,14 +49,11 @@ typedef enum memory_order {
#include "qemu/osdep.h"
#include "qemu-io.h"
-#include "system/system.h"
#include "hw/sysbus.h"
-#include "system/memory.h"
#include "hw/clock.h"
#include "hw/qdev-clock.h"
#include "hw/qdev-properties.h"
#include "hw/qdev-properties-system.h"
#include "hw/irq.h"
#include "exec/memattrs.h"
-#include "system/address-spaces.h"
#include "hw/char/pl011.h"
diff --git a/rust/system/wrapper.h b/rust/system/wrapper.h
new file mode 100644
index 0000000000..48abde8505
--- /dev/null
+++ b/rust/system/wrapper.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+/*
+ * This header file is meant to be used as input to the `bindgen` application
+ * in order to generate C FFI compatible Rust bindings.
+ */
+
+#ifndef __CLANG_STDATOMIC_H
+#define __CLANG_STDATOMIC_H
+/*
+ * Fix potential missing stdatomic.h error in case bindgen does not insert the
+ * correct libclang header paths on its own. We do not use stdatomic.h symbols
+ * in QEMU code, so it's fine to declare dummy types instead.
+ */
+typedef enum memory_order {
+ memory_order_relaxed,
+ memory_order_consume,
+ memory_order_acquire,
+ memory_order_release,
+ memory_order_acq_rel,
+ memory_order_seq_cst,
+} memory_order;
+#endif /* __CLANG_STDATOMIC_H */
+
+#include "qemu/osdep.h"
+
+#include "system/system.h"
+#include "system/memory.h"
+#include "system/address-spaces.h"
diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index ac325969cc..e4946549c0 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -92,6 +92,7 @@ dependencies = [
"qemu_api",
"qemu_api_macros",
"qom",
+ "system",
"util",
]
@@ -133,6 +134,7 @@ dependencies = [
"qemu_api",
"qemu_api_macros",
"qom",
+ "system",
"util",
]
@@ -181,6 +183,7 @@ dependencies = [
"migration",
"qemu_api_macros",
"qom",
+ "system",
"util",
]
@@ -224,6 +227,16 @@ dependencies = [
"unicode-ident",
]
+[[package]]
+name = "system"
+version = "0.1.0"
+dependencies = [
+ "common",
+ "qemu_api_macros",
+ "qom",
+ "util",
+]
+
[[package]]
name = "unicode-ident"
version = "1.0.12"
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index fd7cf9b0e1..1c18e69660 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -8,6 +8,7 @@ members = [
"qemu-api-macros",
"qemu-api",
"qom",
+ "system",
"hw/char/pl011",
"hw/timer/hpet",
"util",
diff --git a/rust/bql/src/cell.rs b/rust/bql/src/cell.rs
index 43109130c5..23b21f0214 100644
--- a/rust/bql/src/cell.rs
+++ b/rust/bql/src/cell.rs
@@ -77,9 +77,8 @@
//!
//! ```ignore
//! # use bql::BqlRefCell;
-//! # use qemu_api::prelude::*;
-//! # use qemu_api::{irq::InterruptSource, irq::IRQState};
-//! # use qemu_api::{sysbus::SysBusDevice, qom::Owned, qom::ParentField};
+//! # use qom::{Owned, ParentField};
+//! # use system::{InterruptSource, IRQState, SysBusDevice};
//! # const N_GPIOS: usize = 8;
//! # struct PL061Registers { /* ... */ }
//! # unsafe impl ObjectType for PL061State {
diff --git a/rust/hw/char/pl011/Cargo.toml b/rust/hw/char/pl011/Cargo.toml
index f7ad5f8e08..e4b1c3f1eb 100644
--- a/rust/hw/char/pl011/Cargo.toml
+++ b/rust/hw/char/pl011/Cargo.toml
@@ -22,6 +22,7 @@ bql = { path = "../../../bql" }
migration = { path = "../../../migration" }
qom = { path = "../../../qom" }
chardev = { path = "../../../chardev" }
+system = { path = "../../../system" }
qemu_api = { path = "../../../qemu-api" }
qemu_api_macros = { path = "../../../qemu-api-macros" }
diff --git a/rust/hw/char/pl011/meson.build b/rust/hw/char/pl011/meson.build
index 552ccc0d60..06ebaf7ab9 100644
--- a/rust/hw/char/pl011/meson.build
+++ b/rust/hw/char/pl011/meson.build
@@ -15,6 +15,7 @@ _libpl011_rs = static_library(
qemu_api_macros,
qom_rs,
chardev_rs,
+ system_rs,
],
)
diff --git a/rust/hw/char/pl011/src/device.rs b/rust/hw/char/pl011/src/device.rs
index b1c65bd79c..5307ac480b 100644
--- a/rust/hw/char/pl011/src/device.rs
+++ b/rust/hw/char/pl011/src/device.rs
@@ -18,7 +18,6 @@
use qemu_api::{
bindings::{qdev_prop_bool, qdev_prop_chr},
irq::{IRQState, InterruptSource},
- memory::{hwaddr, MemoryRegion, MemoryRegionOps, MemoryRegionOpsBuilder},
prelude::*,
qdev::{Clock, ClockEvent, DeviceImpl, DeviceState, Property, ResetType,
ResettablePhasesImpl},
sysbus::{SysBusDevice, SysBusDeviceImpl},
@@ -28,6 +27,7 @@
qom_isa, IsA, Object, ObjectClassMethods, ObjectDeref, ObjectImpl,
ObjectMethods, ObjectType,
Owned, ParentField, ParentInit,
};
+use system::{hwaddr, MemoryRegion, MemoryRegionOps, MemoryRegionOpsBuilder};
use util::{log::Log, log_mask_ln};
use crate::registers::{self, Interrupt, RegisterOffset};
diff --git a/rust/hw/timer/hpet/Cargo.toml b/rust/hw/timer/hpet/Cargo.toml
index 19456ec72b..a95b1271c6 100644
--- a/rust/hw/timer/hpet/Cargo.toml
+++ b/rust/hw/timer/hpet/Cargo.toml
@@ -16,6 +16,7 @@ util = { path = "../../../util" }
migration = { path = "../../../migration" }
bql = { path = "../../../bql" }
qom = { path = "../../../qom" }
+system = { path = "../../../system" }
qemu_api = { path = "../../../qemu-api" }
qemu_api_macros = { path = "../../../qemu-api-macros" }
diff --git a/rust/hw/timer/hpet/meson.build b/rust/hw/timer/hpet/meson.build
index 195dc48e1c..74cbe27df8 100644
--- a/rust/hw/timer/hpet/meson.build
+++ b/rust/hw/timer/hpet/meson.build
@@ -11,6 +11,7 @@ _libhpet_rs = static_library(
qemu_api,
qemu_api_macros,
qom_rs,
+ system_rs,
],
)
diff --git a/rust/hw/timer/hpet/src/device.rs b/rust/hw/timer/hpet/src/device.rs
index b876b35a43..f5cc4ee0ad 100644
--- a/rust/hw/timer/hpet/src/device.rs
+++ b/rust/hw/timer/hpet/src/device.rs
@@ -17,19 +17,17 @@
VMStateDescription, VMStateFieldHelper,
};
use qemu_api::{
- bindings::{
- address_space_memory, address_space_stl_le, qdev_prop_bit,
qdev_prop_bool,
- qdev_prop_uint32, qdev_prop_usize,
- },
+ bindings::{qdev_prop_bit, qdev_prop_bool, qdev_prop_uint32,
qdev_prop_usize},
irq::InterruptSource,
- memory::{
- hwaddr, MemoryRegion, MemoryRegionOps, MemoryRegionOpsBuilder,
MEMTXATTRS_UNSPECIFIED,
- },
prelude::*,
qdev::{DeviceImpl, DeviceState, Property, ResetType, ResettablePhasesImpl},
sysbus::{SysBusDevice, SysBusDeviceImpl},
};
use qom::{qom_isa, Object, ObjectImpl, ObjectType, ParentField, ParentInit};
+use system::{
+ bindings::{address_space_memory, address_space_stl_le, hwaddr},
+ MemoryRegion, MemoryRegionOps, MemoryRegionOpsBuilder,
MEMTXATTRS_UNSPECIFIED,
+};
use util::timer::{Timer, CLOCK_VIRTUAL, NANOSECONDS_PER_SECOND};
use crate::fw_cfg::HPETFwConfig;
diff --git a/rust/meson.build b/rust/meson.build
index 4d9e291223..d8b71f5506 100644
--- a/rust/meson.build
+++ b/rust/meson.build
@@ -29,6 +29,7 @@ subdir('util')
subdir('migration')
subdir('bql')
subdir('qom')
+subdir('system')
subdir('chardev')
subdir('qemu-api')
diff --git a/rust/qemu-api/Cargo.toml b/rust/qemu-api/Cargo.toml
index b8aa6d037c..2429c4eb9f 100644
--- a/rust/qemu-api/Cargo.toml
+++ b/rust/qemu-api/Cargo.toml
@@ -21,6 +21,7 @@ util = { path = "../util" }
bql = { path = "../bql" }
qemu_api_macros = { path = "../qemu-api-macros" }
qom = { path = "../qom" }
+system = { path = "../system" }
anyhow = "~1.0"
libc = "0.2.162"
foreign = "~0.3.1"
diff --git a/rust/qemu-api/meson.build b/rust/qemu-api/meson.build
index e3af8f86c1..644ca44573 100644
--- a/rust/qemu-api/meson.build
+++ b/rust/qemu-api/meson.build
@@ -8,7 +8,6 @@ c_enums = [
'MachineInitPhase',
'MemoryDeviceInfoKind',
'ResetType',
- 'device_endian',
]
_qemu_api_bindgen_args = []
foreach enum : c_enums
@@ -24,8 +23,11 @@ endforeach
blocked_type = [
'Chardev',
'Error',
+ 'MemTxAttrs',
+ 'MemoryRegion',
'ObjectClass',
'VMStateDescription',
+ 'device_endian',
]
foreach type: blocked_type
_qemu_api_bindgen_args += ['--blocklist-type', type]
@@ -54,7 +56,6 @@ _qemu_api_rs = static_library(
'src/lib.rs',
'src/bindings.rs',
'src/irq.rs',
- 'src/memory.rs',
'src/prelude.rs',
'src/qdev.rs',
'src/sysbus.rs',
@@ -64,7 +65,7 @@ _qemu_api_rs = static_library(
override_options: ['rust_std=2021', 'build.rust_std=2021'],
rust_abi: 'rust',
rust_args: _qemu_api_cfg,
- dependencies: [anyhow_rs, common_rs, chardev_rs, foreign_rs, libc_rs,
qemu_api_macros, qemuutil_rs, util_rs, migration_rs, bql_rs, qom_rs,
+ dependencies: [anyhow_rs, common_rs, chardev_rs, foreign_rs, libc_rs,
qemu_api_macros, qemuutil_rs, util_rs, migration_rs, bql_rs, qom_rs, system_rs,
qom, hwcore, chardev, migration],
)
diff --git a/rust/qemu-api/src/bindings.rs b/rust/qemu-api/src/bindings.rs
index 526bcf8e31..63b805c76e 100644
--- a/rust/qemu-api/src/bindings.rs
+++ b/rust/qemu-api/src/bindings.rs
@@ -24,6 +24,7 @@
use common::Zeroable;
use migration::bindings::VMStateDescription;
use qom::bindings::ObjectClass;
+use system::bindings::{device_endian, MemTxAttrs, MemoryRegion};
use util::bindings::Error;
#[cfg(MESON)]
@@ -32,15 +33,6 @@
#[cfg(not(MESON))]
include!(concat!(env!("OUT_DIR"), "/bindings.inc.rs"));
-// SAFETY: this is a pure data struct
-unsafe impl Send for CoalescedMemoryRange {}
-unsafe impl Sync for CoalescedMemoryRange {}
-
-// SAFETY: these are constants and vtables; the Send and Sync requirements
-// are deferred to the unsafe callbacks that they contain
-unsafe impl Send for MemoryRegionOps {}
-unsafe impl Sync for MemoryRegionOps {}
-
unsafe impl Send for Property {}
unsafe impl Sync for Property {}
@@ -49,7 +41,3 @@ unsafe impl Sync for TypeInfo {}
unsafe impl Zeroable for crate::bindings::Property__bindgen_ty_1 {}
unsafe impl Zeroable for crate::bindings::Property {}
-unsafe impl Zeroable for crate::bindings::MemoryRegionOps__bindgen_ty_1 {}
-unsafe impl Zeroable for crate::bindings::MemoryRegionOps__bindgen_ty_2 {}
-unsafe impl Zeroable for crate::bindings::MemoryRegionOps {}
-unsafe impl Zeroable for crate::bindings::MemTxAttrs {}
diff --git a/rust/qemu-api/src/lib.rs b/rust/qemu-api/src/lib.rs
index 712116b585..38ff102b86 100644
--- a/rust/qemu-api/src/lib.rs
+++ b/rust/qemu-api/src/lib.rs
@@ -14,6 +14,5 @@
pub mod prelude;
pub mod irq;
-pub mod memory;
pub mod qdev;
pub mod sysbus;
diff --git a/rust/qemu-api/src/sysbus.rs b/rust/qemu-api/src/sysbus.rs
index 016e57935a..66b618c705 100644
--- a/rust/qemu-api/src/sysbus.rs
+++ b/rust/qemu-api/src/sysbus.rs
@@ -9,11 +9,11 @@
pub use bindings::SysBusDeviceClass;
use common::Opaque;
use qom::{IsA, Object, ObjectCast, ObjectDeref, ObjectType, Owned};
+use system::MemoryRegion;
use crate::{
bindings,
irq::{IRQState, InterruptSource},
- memory::MemoryRegion,
qdev::{DeviceClassExt, DeviceImpl, DeviceState},
};
diff --git a/rust/system/Cargo.toml b/rust/system/Cargo.toml
new file mode 100644
index 0000000000..6803895e08
--- /dev/null
+++ b/rust/system/Cargo.toml
@@ -0,0 +1,22 @@
+[package]
+name = "system"
+version = "0.1.0"
+description = "Rust bindings for QEMU/system"
+resolver = "2"
+publish = false
+
+authors.workspace = true
+edition.workspace = true
+homepage.workspace = true
+license.workspace = true
+repository.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+common = { path = "../common" }
+qom = { path = "../qom" }
+util = { path = "../util" }
+qemu_api_macros = { path = "../qemu-api-macros" }
+
+[lints]
+workspace = true
diff --git a/rust/system/build.rs b/rust/system/build.rs
new file mode 100644
index 0000000000..34ba641373
--- /dev/null
+++ b/rust/system/build.rs
@@ -0,0 +1,43 @@
+// Copyright 2024, Linaro Limited
+// Author(s): Manos Pitsidianakis <manos.pitsidiana...@linaro.org>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#[cfg(unix)]
+use std::os::unix::fs::symlink as symlink_file;
+#[cfg(windows)]
+use std::os::windows::fs::symlink_file;
+use std::{env, fs::remove_file, io::Result, path::Path};
+
+fn main() -> Result<()> {
+ let file = if let Ok(root) = env::var("MESON_BUILD_ROOT") {
+ format!("{root}/rust/system/bindings.inc.rs")
+ } else {
+ // Placing bindings.inc.rs in the source directory is supported
+ // but not documented or encouraged.
+ format!("{}/src/bindings.inc.rs", env!("CARGO_MANIFEST_DIR"))
+ };
+
+ let file = Path::new(&file);
+ if !Path::new(&file).exists() {
+ panic!(concat!(
+ "\n",
+ " No generated C bindings found! Maybe you wanted one of\n",
+ " `make clippy`, `make rustfmt`, `make rustdoc`?\n",
+ "\n",
+ " For other uses of `cargo`, start a subshell with\n",
+ " `pyvenv/bin/meson devenv`, or point MESON_BUILD_ROOT to\n",
+ " the top of the build tree."
+ ));
+ }
+
+ let out_dir = env::var("OUT_DIR").unwrap();
+ let dest_path = format!("{out_dir}/bindings.inc.rs");
+ let dest_path = Path::new(&dest_path);
+ if dest_path.symlink_metadata().is_ok() {
+ remove_file(dest_path)?;
+ }
+ symlink_file(file, dest_path)?;
+
+ println!("cargo:rerun-if-changed=build.rs");
+ Ok(())
+}
diff --git a/rust/system/meson.build b/rust/system/meson.build
new file mode 100644
index 0000000000..cbd3eb4717
--- /dev/null
+++ b/rust/system/meson.build
@@ -0,0 +1,57 @@
+_system_cfg = run_command(rustc_args,
+ '--config-headers', config_host_h, '--features', files('Cargo.toml'),
+ capture: true, check: true).stdout().strip().splitlines()
+
+c_enums = [
+ 'device_endian',
+]
+_system_bindgen_args = []
+foreach enum : c_enums
+ _system_bindgen_args += ['--rustified-enum', enum]
+endforeach
+
+# TODO: Remove this comment when the clang/libclang mismatch issue is solved.
+#
+# Rust bindings generation with `bindgen` might fail in some cases where the
+# detected `libclang` does not match the expected `clang` version/target. In
+# this case you must pass the path to `clang` and `libclang` to your build
+# command invocation using the environment variables CLANG_PATH and
+# LIBCLANG_PATH
+_system_bindings_inc_rs = rust.bindgen(
+ input: 'wrapper.h',
+ dependencies: common_ss.all_dependencies(),
+ output: 'bindings.inc.rs',
+ include_directories: bindings_incdir,
+ bindgen_version: ['>=0.60.0'],
+ args: bindgen_args_common + _system_bindgen_args,
+)
+
+_system_rs = static_library(
+ 'system',
+ structured_sources(
+ [
+ 'src/lib.rs',
+ 'src/bindings.rs',
+ 'src/memory.rs',
+ ],
+ {'.': _system_bindings_inc_rs}
+ ),
+ override_options: ['rust_std=2021', 'build.rust_std=2021'],
+ rust_abi: 'rust',
+ rust_args: _system_cfg,
+ dependencies: [qemuutil_rs, common_rs, bql_rs, migration_rs,
qemu_api_macros, qom_rs, util_rs,
+ hwcore],
+)
+
+system_rs = declare_dependency(link_with: [_system_rs],
+ dependencies: [qemu_api_macros, hwcore])
+
+# Doctests are essentially integration tests, so they need the same
dependencies.
+# Note that running them requires the object files for C code, so place them
+# in a separate suite that is run by the "build" CI jobs rather than "check".
+rust.doctest('rust-system-rs-doctests',
+ _system_rs,
+ protocol: 'rust',
+ dependencies: system_rs,
+ suite: ['doc', 'rust'])
+
diff --git a/rust/system/src/bindings.rs b/rust/system/src/bindings.rs
new file mode 100644
index 0000000000..43edd98807
--- /dev/null
+++ b/rust/system/src/bindings.rs
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#![allow(
+ dead_code,
+ improper_ctypes_definitions,
+ improper_ctypes,
+ non_camel_case_types,
+ non_snake_case,
+ non_upper_case_globals,
+ unnecessary_transmutes,
+ unsafe_op_in_unsafe_fn,
+ clippy::pedantic,
+ clippy::restriction,
+ clippy::style,
+ clippy::missing_const_for_fn,
+ clippy::ptr_offset_with_cast,
+ clippy::useless_transmute,
+ clippy::missing_safety_doc,
+ clippy::too_many_arguments
+)]
+
+use common::Zeroable;
+
+#[cfg(MESON)]
+include!("bindings.inc.rs");
+
+#[cfg(not(MESON))]
+include!(concat!(env!("OUT_DIR"), "/bindings.inc.rs"));
+
+// SAFETY: these are constants and vtables; the Send and Sync requirements
+// are deferred to the unsafe callbacks that they contain
+unsafe impl Send for MemoryRegionOps {}
+unsafe impl Sync for MemoryRegionOps {}
+
+// SAFETY: this is a pure data struct
+unsafe impl Send for CoalescedMemoryRange {}
+unsafe impl Sync for CoalescedMemoryRange {}
+
+unsafe impl Zeroable for MemoryRegionOps__bindgen_ty_1 {}
+unsafe impl Zeroable for MemoryRegionOps__bindgen_ty_2 {}
+unsafe impl Zeroable for MemoryRegionOps {}
+unsafe impl Zeroable for MemTxAttrs {}
diff --git a/rust/system/src/lib.rs b/rust/system/src/lib.rs
new file mode 100644
index 0000000000..dfb68d3ea0
--- /dev/null
+++ b/rust/system/src/lib.rs
@@ -0,0 +1,4 @@
+pub mod bindings;
+
+mod memory;
+pub use memory::*;
diff --git a/rust/qemu-api/src/memory.rs b/rust/system/src/memory.rs
similarity index 99%
rename from rust/qemu-api/src/memory.rs
rename to rust/system/src/memory.rs
index 480cc6b0c5..af69fb30bf 100644
--- a/rust/qemu-api/src/memory.rs
+++ b/rust/system/src/memory.rs
@@ -9,11 +9,11 @@
marker::PhantomData,
};
-pub use bindings::{hwaddr, MemTxAttrs};
use common::{callbacks::FnCall, uninit::MaybeUninitField, zeroable::Zeroable,
Opaque};
use qom::{IsA, Object, ObjectType};
use crate::bindings::{self, device_endian, memory_region_init_io};
+pub use crate::bindings::{hwaddr, MemTxAttrs};
pub struct MemoryRegionOps<T>(
bindings::MemoryRegionOps,
--
2.50.1
