use qemu_api::{
bindings::{self, *},
+ c_str,
definitions::ObjectImpl,
};
/// location/instance. All its fields are expected to hold unitialized
/// values with the sole exception of `parent_obj`.
unsafe fn init(&mut self) {
- const CLK_NAME: &CStr = c"clk";
+ const CLK_NAME: &CStr = c_str!("clk");
let dev = addr_of_mut!(*self).cast::<DeviceState>();
// SAFETY:
let dev: *mut DeviceState = qdev_new(PL011State::TYPE_INFO.name);
let sysbus: *mut SysBusDevice = dev.cast::<SysBusDevice>();
- qdev_prop_set_chr(dev, c"chardev".as_ptr(), chr);
+ qdev_prop_set_chr(dev, c_str!("chardev").as_ptr(), chr);
sysbus_realize_and_unref(sysbus, addr_of!(error_fatal) as *mut *mut Error);
sysbus_mmio_map(sysbus, 0, addr);
sysbus_connect_irq(sysbus, 0, irq);
// Author(s): Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
// SPDX-License-Identifier: GPL-2.0-or-later
-use core::{
- ffi::{c_int, c_void},
- ptr::NonNull,
-};
+use core::ptr::NonNull;
+use std::os::raw::{c_int, c_void};
use qemu_api::{
- bindings::*, vmstate_clock, vmstate_fields, vmstate_int32, vmstate_subsections, vmstate_uint32,
- vmstate_uint32_array, vmstate_unused, zeroable::Zeroable,
+ bindings::*, c_str, vmstate_clock, vmstate_fields, vmstate_int32, vmstate_subsections,
+ vmstate_uint32, vmstate_uint32_array, vmstate_unused, zeroable::Zeroable,
};
use crate::device::{PL011State, PL011_FIFO_DEPTH};
/// Migration subsection for [`PL011State`] clock.
pub static VMSTATE_PL011_CLOCK: VMStateDescription = VMStateDescription {
- name: c"pl011/clock".as_ptr(),
+ name: c_str!("pl011/clock").as_ptr(),
version_id: 1,
minimum_version_id: 1,
needed: Some(pl011_clock_needed),
}
pub static VMSTATE_PL011: VMStateDescription = VMStateDescription {
- name: c"pl011".as_ptr(),
+ name: c_str!("pl011").as_ptr(),
version_id: 2,
minimum_version_id: 2,
post_load: Some(pl011_post_load),
qemu_api::declare_properties! {
PL011_PROPERTIES,
qemu_api::define_property!(
- c"chardev",
+ c_str!("chardev"),
PL011State,
char_backend,
unsafe { &qdev_prop_chr },
CharBackend
),
qemu_api::define_property!(
- c"migrate-clk",
+ c_str!("migrate-clk"),
PL011State,
migrate_clock,
unsafe { &qdev_prop_bool },
extern crate bilge_impl;
extern crate qemu_api;
+use qemu_api::c_str;
+
pub mod device;
pub mod device_class;
pub mod memory_ops;
-pub const TYPE_PL011: &::std::ffi::CStr = c"pl011";
-pub const TYPE_PL011_LUMINARY: &::std::ffi::CStr = c"pl011_luminary";
+pub const TYPE_PL011: &::std::ffi::CStr = c_str!("pl011");
+pub const TYPE_PL011_LUMINARY: &::std::ffi::CStr = c_str!("pl011_luminary");
/// Offset of each register from the base memory address of the device.
///
structured_sources(
[
'src/lib.rs',
+ 'src/c_str.rs',
'src/definitions.rs',
'src/device_class.rs',
'src/vmstate.rs',
],
)
+rust.test('rust-qemu-api-tests', _qemu_api_rs,
+ suite: ['unit', 'rust'])
+
qemu_api = declare_dependency(
link_with: _qemu_api_rs,
dependencies: qemu_api_macros,
--- /dev/null
+// Copyright 2024 Red Hat, Inc.
+// Author(s): Paolo Bonzini <pbonzini@redhat.com>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#[macro_export]
+/// Given a string constant _without_ embedded or trailing NULs, return
+/// a `CStr`.
+///
+/// Needed for compatibility with Rust <1.77.
+macro_rules! c_str {
+ ($str:expr) => {{
+ const STRING: &str = concat!($str, "\0");
+ const BYTES: &[u8] = STRING.as_bytes();
+
+ // "for" is not allowed in const context... oh well,
+ // everybody loves some lisp. This could be turned into
+ // a procedural macro if this is a problem; alternatively
+ // Rust 1.72 makes CStr::from_bytes_with_nul a const function.
+ const fn f(b: &[u8], i: usize) {
+ if i == b.len() - 1 {
+ } else if b[i] == 0 {
+ panic!("c_str argument contains NUL")
+ } else {
+ f(b, i + 1)
+ }
+ }
+ f(BYTES, 0);
+
+ // SAFETY: absence of NULs apart from the final byte was checked above
+ unsafe { std::ffi::CStr::from_bytes_with_nul_unchecked(BYTES) }
+ }};
+}
+
+#[cfg(test)]
+mod tests {
+ use std::ffi::CStr;
+
+ use crate::c_str;
+
+ #[test]
+ fn test_cstr_macro() {
+ let good = c_str!("🦀");
+ let good_bytes = b"\xf0\x9f\xa6\x80\0";
+ assert_eq!(good.to_bytes_with_nul(), good_bytes);
+ }
+
+ #[test]
+ fn test_cstr_macro_const() {
+ const GOOD: &CStr = c_str!("🦀");
+ const GOOD_BYTES: &[u8] = b"\xf0\x9f\xa6\x80\0";
+ assert_eq!(GOOD.to_bytes_with_nul(), GOOD_BYTES);
+ }
+}
unsafe impl Sync for bindings::VMStateField {}
unsafe impl Sync for bindings::VMStateInfo {}
+pub mod c_str;
pub mod definitions;
pub mod device_class;
pub mod vmstate;
macro_rules! vmstate_unused_buffer {
($field_exists_fn:expr, $version_id:expr, $size:expr) => {{
$crate::bindings::VMStateField {
- name: c"unused".as_ptr(),
+ name: c_str!("unused").as_ptr(),
err_hint: ::core::ptr::null(),
offset: 0,
size: $size,
use qemu_api::{
bindings::*,
- declare_properties, define_property,
+ c_str, declare_properties, define_property,
definitions::{Class, ObjectImpl},
device_class_init,
zeroable::Zeroable,
fn test_device_decl_macros() {
// Test that macros can compile.
pub static VMSTATE: VMStateDescription = VMStateDescription {
- name: c"name".as_ptr(),
+ name: c_str!("name").as_ptr(),
unmigratable: true,
..Zeroable::ZERO
};
declare_properties! {
DUMMY_PROPERTIES,
define_property!(
- c"migrate-clk",
+ c_str!("migrate-clk"),
DummyState,
migrate_clock,
unsafe { &qdev_prop_bool },
impl ObjectImpl for DummyState {
type Class = DummyClass;
const TYPE_INFO: qemu_api::bindings::TypeInfo = qemu_api::type_info! { Self };
- const TYPE_NAME: &'static CStr = c"dummy";
+ const TYPE_NAME: &'static CStr = c_str!("dummy");
const PARENT_TYPE_NAME: Option<&'static CStr> = Some(TYPE_DEVICE);
const ABSTRACT: bool = false;
const INSTANCE_INIT: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
projects / qemu.git / commitdiff