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@@ -173,18 +173,18 @@ test-args = ["-device", "isa-debug-exit,iobase=0xf4,iosize=0x04"]
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这里我们使用 [`x86_64`] crate提供的抽象,而不是手动调用`in`或`out`指令。为了添加对该crate的依赖,我们可以将其添加到我们的 `Cargo.toml`中的 `dependencies` 小节中去:
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[`x86_64`]: https://docs.rs/x86_64/0.7.5/x86_64/
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[`x86_64`]: https://docs.rs/x86_64/0.14.2/x86_64/
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```toml
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# in Cargo.toml
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[dependencies]
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x86_64 = "0.11.0"
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x86_64 = "0.14.2"
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```
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现在我们可以使用crate中提供的[`Port`] 类型来创建一个`exit_qemu` 函数了:
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[`Port`]: https://docs.rs/x86_64/0.7.0/x86_64/instructions/port/struct.Port.html
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[`Port`]: https://docs.rs/x86_64/0.14.2/x86_64/instructions/port/struct.Port.html
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```rust
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// in src/main.rs
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