[PATCH 01/14] add skeleton

[Paolo Bonzini]

qemu/ is where target-independent code goes.  This code should
not use constructors and will be brought in as needed.

qemu-hw/ is where the target-dependent code goes, which is going
to be built depending on Kconfig symbols.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 .gitignore               |   2 +
 Cargo.toml               |   3 +
 qemu-hw/Cargo.toml       |   6 ++
 qemu-hw/src/lib.rs       |   0
 qemu-hw/src/main.rs      |   3 +
 qemu/Cargo.toml          |   7 ++
 qemu/src/bindings/mod.rs |  88 +++++++++++++++++++++++++
 qemu/src/lib.rs          |   4 ++
 9 files changed, 249 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.toml
 create mode 100644 qemu-hw/Cargo.toml
 create mode 100644 qemu-hw/src/lib.rs
 create mode 100644 qemu-hw/src/main.rs
 create mode 100644 qemu/Cargo.toml
 create mode 100644 qemu/src/bindings/mod.rs
 create mode 100644 qemu/src/lib.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3fbfc34
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
+/.git-old
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..f66a80e
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,3 @@
+[workspace]
+members = ["qemu"]
+resolver = "2"
diff --git a/qemu-hw/Cargo.toml b/qemu-hw/Cargo.toml
new file mode 100644
index 0000000..9bd6930
--- /dev/null
+++ b/qemu-hw/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "qemu-hw"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/qemu-hw/src/lib.rs b/qemu-hw/src/lib.rs
new file mode 100644
index 0000000..e69de29
diff --git a/qemu-hw/src/main.rs b/qemu-hw/src/main.rs
new file mode 100644
index 0000000..e7a11a9
--- /dev/null
+++ b/qemu-hw/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}
diff --git a/qemu/Cargo.toml b/qemu/Cargo.toml
new file mode 100644
index 0000000..18d0fa4
--- /dev/null
+++ b/qemu/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "qemu"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+const-default = { version = "~1", features = ["derive"] }
diff --git a/qemu/src/bindings/mod.rs b/qemu/src/bindings/mod.rs
new file mode 100644
index 0000000..a49447b
--- /dev/null
+++ b/qemu/src/bindings/mod.rs
@@ -0,0 +1,88 @@
+use std::ffi::{c_char, c_void};
+
+#[repr(C)]
+pub struct Object {
+    pub klass: *mut c_void,
+    pub free: extern "C" fn(c: *mut c_void),
+    pub properties: *mut c_void,
+    pub r#ref: u32,
+    pub parent: *mut Object,
+}
+
+#[repr(C)]
+pub struct ObjectClass {
+    pub unparent: Option<unsafe extern "C" fn(*mut Object)>,
+}
+
+#[repr(C)]
+pub struct DeviceState {
+    pub base: Object,
+}
+
+#[repr(C)]
+#[allow(non_camel_case_types)]
+pub struct PropertyInfo {
+    pub name: *const c_char,
+    pub description: *const c_char,
+    // ...
+}
+#[repr(C)]
+pub struct Property {
+    pub name: *const c_char,
+    pub offset: usize,
+    pub default: u64,
+    pub info: *const PropertyInfo,
+}
+
+pub struct DeviceClass {
+    pub oc: ObjectClass,
+
+    pub realize: Option<unsafe extern "C" fn(*mut DeviceState, *mut *mut 
Error)>,
+    pub unrealize: Option<unsafe extern "C" fn(*mut DeviceState)>,
+    pub cold_reset: Option<unsafe extern "C" fn(*mut DeviceState)>,
+    pub properties: *const Property,
+}
+
+#[repr(C)]
+pub struct TypeInfo {
+    pub name: *const c_char,
+    pub parent: *const c_char,
+    pub instance_mem_init: Option<unsafe extern "C" fn(*mut c_void)>,
+    pub instance_init: Option<unsafe extern "C" fn(*mut c_void)>,
+    pub instance_finalize: Option<unsafe extern "C" fn(*mut c_void)>,
+    pub class_init: Option<unsafe extern "C" fn(*mut c_void, *mut c_void)>,
+    pub instance_size: usize,
+}
+
+#[repr(C)]
+pub struct Error {
+    _unused: c_char,
+}
+
+extern "C" {
+    pub fn error_setg_internal(
+        errp: *mut *mut Error,
+        src: *mut c_char,
+        line: u32,
+        func: *mut c_char,
+        fmt: *const c_char,
+        ...
+    );
+    pub fn error_get_pretty(errp: *const Error) -> *mut c_char;
+    pub fn error_free(errp: *mut Error);
+
+    pub fn object_dynamic_cast(obj: *mut Object, typ: *const c_char) -> *mut 
c_void;
+    pub fn object_property_add_child(obj: *mut Object, typ: *const c_char,
+        child: *mut Object);
+    pub fn object_get_typename(obj: *const Object) -> *const c_char;
+    pub fn object_ref(obj: *mut Object);
+    pub fn object_new(typ: *const c_char) -> *const Object;
+    pub fn object_unref(obj: *mut Object);
+    pub fn object_unparent(obj: *mut Object);
+
+    pub fn device_cold_reset(obj: *mut DeviceState);
+    pub fn device_realize(obj: *mut DeviceState, err: *mut *mut Error) -> bool;
+    pub fn type_register(obj: *const TypeInfo);
+
+    pub static qdev_prop_bool: PropertyInfo;
+}
diff --git a/qemu/src/lib.rs b/qemu/src/lib.rs
new file mode 100644
index 0000000..fce21d7
--- /dev/null
+++ b/qemu/src/lib.rs
@@ -0,0 +1,4 @@
+#![allow(unused_macros)]
+#![allow(dead_code)]
+
+pub mod bindings;
-- 
2.45.2