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Merge pull request #448 from slin31/master

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Fix: should be `main.rs` instead of `lib.rs`
This commit is contained in:
Philipp Oppermann
2018-07-02 15:44:59 +02:00
committed by GitHub
parent 41bd05586e b4dd2de117
commit bb85705fe9
1 changed files with 7 additions and 10 deletions
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17
blog/content/second-edition/posts/06-cpu-exceptions/index.md
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@@ -249,21 +249,18 @@ Our handler just outputs a message and pretty-prints the exception stack frame.
When we try to compile it, the following error occurs:
```
error: x86-interrupt ABI is experimental and subject to change (see issue #40180)
--> src/interrupts.rs:8:1
error[E0658]: x86-interrupt ABI is experimental and subject to change (see issue #40180)
--> src/main.rs:53:1
|
8 | extern "x86-interrupt" fn breakpoint_handler(
| _^ starting here...
9 | | stack_frame: &mut ExceptionStackFrame)
10 | | {
11 | | println!("EXCEPTION: BREAKPOINT\n{:#?}", stack_frame);
12 | | }
| |_^ ...ending here
53 | / extern "x86-interrupt" fn breakpoint_handler(stack_frame: &mut ExceptionStackFrame) {
54 | | println!("EXCEPTION: BREAKPOINT\n{:#?}", stack_frame);
55 | | }
| |_^
|
= help: add #![feature(abi_x86_interrupt)] to the crate attributes to enable
```
This error occurs because the `x86-interrupt` calling convention is still unstable. To use it anyway, we have to explicitly enable it by adding `#![feature(abi_x86_interrupt)]` on the top of our `lib.rs`.
This error occurs because the `x86-interrupt` calling convention is still unstable. To use it anyway, we have to explicitly enable it by adding `#![feature(abi_x86_interrupt)]` on the top of our `main.rs`.
### Loading the IDT
In order that the CPU uses our new interrupt descriptor table, we need to load it using the [`lidt`] instruction. The `Idt` struct of the `x86_64` provides a [`load`][Idt::load] method function for that. Let's try to use it: