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kmc-solid: Use `libc::abort` to abort a program This PR updates the target-specific abort subroutine for the [`*-kmc-solid_*`](https://doc.rust-lang.org/nightly/rustc/platform-support/kmc-solid.html) Tier 3 targets. The current implementation uses a `hlt` instruction, which is the most direct way to notify a connected debugger but is not the most flexible way. This PR changes it to call the `abort` libc function, making it possible for a system designer to override its behavior as they see fit. |
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