nuttx-apps/examples/rust/baremetal/hello_rust_main.rs
Huang Qi 14fa7d2726 examples/rust: Rename hello_rust to rust/baremetal
Summary:
- Renamed hello_rust example to rust/baremetal to better reflect its purpose
- Updated file headers and Makefile paths
- Maintained all existing Kconfig options and functionality
- Prepares for future Rust development patterns where Cargo will be the
mainstream approach, with baremetal demonstrating traditional build method
- Creates clearer structure for Rust examples as we expand Rust support

Impact:
- No functional changes to the example itself
- Better organization of Rust examples under examples/rust/
- Existing configurations using this example will continue to work
- Build system will now look for the example in the new location

Testing:
- Confirmed Kconfig options remain unchanged
- GitHub CI passed and local build tested

Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
2025-01-15 01:53:56 +08:00

77 lines
2.7 KiB
Rust

/****************************************************************************
* apps/examples/rust/baremetal/hello_rust_main.rs
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Attributes
****************************************************************************/
#![no_main]
#![no_std]
/****************************************************************************
* Uses
****************************************************************************/
use core::panic::PanicInfo;
/****************************************************************************
* Externs
****************************************************************************/
extern "C" {
pub fn printf(format: *const u8, ...) -> i32;
}
/****************************************************************************
* Private functions
****************************************************************************/
/****************************************************************************
* Panic handler (needed for [no_std] compilation)
****************************************************************************/
#[panic_handler]
fn panic(_panic: &PanicInfo<'_>) -> ! {
loop {}
}
/****************************************************************************
* Public functions
****************************************************************************/
/****************************************************************************
* hello_rust_main
****************************************************************************/
#[no_mangle]
pub extern "C" fn hello_rust_main(_argc: i32, _argv: *const *const u8) -> i32 {
/* "Hello, Rust!!" using printf() from libc */
unsafe {
printf(b"Hello, Rust!!\n\0" as *const u8);
}
/* exit with status 0 */
0
}