publish v0.4.5

Author: chyyuu-tsinghua-cs

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "arceos-helloworld"
-version = "0.4.4"
+version = "0.4.5"
 edition = "2024"
 authors = ["Yuekai Jia <equation618@gmail.com>", "Yu Chen <yuchen@tsinghua.edu.cn>"]
 description = "A simple helloworld crate (from crates.io) for ArceOS"
@@ -18,6 +18,7 @@ include = [
     "rust-toolchain.toml",
     "README.md",
     "LICENSE*",
+    "exercise/**",
 ]
 
 [features]

Cargo.toml

@@ -135,6 +135,17 @@ cross-compilation and QEMU execution:
 | `build.rs` | Locates the linker script generated by `axhal` and passes it to the linker |
 | `configs/*.toml` | Pre-generated platform configuration for each architecture |
 
+## Exercise
+### Requirements
+Based on the `arceos-helloworld` kernel component  and the reference codes under the `exercise` directory, implement a new kernel component named `arceos-helloworld-with-color` that supports colored print output.
+
+### Expectation
+The output of the string "Hello, world!" shall be displayed with color. (No specific color requirements are imposed.)
+
+### Tips
+Modifications made on `arceos` components at different levels will affect different scopes of output.
+For example, modifying `axstd` may only affect the output of the println! macro; modifying `axhal` may also affect the color of ArceOS startup information.
+
 ## ArceOS Tutorial Crates
 
 This crate is part of a series of tutorial crates for learning OS development with [ArceOS](https://github.com/arceos-org/arceos). The crates are organized by functionality and complexity progression:

README.md

@@ -0,0 +1,10 @@
+#![cfg_attr(feature = "axstd", no_std)]
+#![cfg_attr(feature = "axstd", no_main)]
+
+#[cfg(feature = "axstd")]
+use axstd::println;
+
+#[cfg_attr(feature = "axstd", no_mangle)]
+fn main() {
+    println!("[WithColor]: Hello, Arceos!");
+}