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Melhuishj patch 1 #331

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0df21d2
Update qemu.md with debugging information
melhuishj Oct 11, 2022
8afa0ae
Update qemu.md
melhuishj Oct 11, 2022
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20 changes: 20 additions & 0 deletions src/start/qemu.md
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Expand Up @@ -168,6 +168,26 @@ cargo build --target thumbv7m-none-eabi
cargo build
```

> **NOTE**: If you encounter an error during this build step, you may need to switch
> to the GNU linker. This is achieved by commenting out the LLD linker and
> uncommenting the GNU linker in `.cargo/config` like below.
> ```toml
> # LLD (shipped with the Rust toolchain) is used as the default linker
> # "-C", "link-arg=-Tlink.x",
>
> # if you run into problems with LLD switch to the GNU linker by commenting out
> # this line
> "-C", "linker=arm-none-eabi-ld",
> ```
> At this point you should
> ```console
> cargo clean
> cargo build
> ```
> If you encounter ``error: linker `arm-none-eabi-ld` not found`` you will need to
> install `libnewlib-arm-none-eabi` (`sudo apt install libnewlib-arm-none-eabi` in
> Ubuntu/Debian). You may also need to `clean` before building again like above.

## Inspecting

Now we have a non-native ELF binary in `target/thumbv7m-none-eabi/debug/app`. We
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