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rust: introduce a c_str macro

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This allows CStr constants to be defined easily on Rust 1.63.0, while
checking that there are no embedded NULs.  c"" literals were only
stabilized in Rust 1.77.0.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-10-25 08:23:53 +02:00
parent 9f7d4520d6
commit 718e255f0a
8 changed files with 78 additions and 19 deletions
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5
rust/hw/char/pl011/src/device.rs
View file

@ -10,6 +10,7 @@ use std::{
use qemu_api::{
bindings::{self, *},
c_str,
definitions::ObjectImpl,
};
@ -135,7 +136,7 @@ impl PL011State {
/// 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:
@ -598,7 +599,7 @@ pub unsafe extern "C" fn pl011_create(
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);