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bors 6753bbed23 Auto merge of #117072 - betrusted-io:unwinding-crate-support, r=cuviper
Use `unwinding` crate for unwinding on Xous platform

This patch adds support for using [unwinding](https://github.com/nbdd0121/unwinding) on platforms where libunwinding isn't viable. An example of such a platform is `riscv32imac-unknown-xous-elf`.

### Background

The Rust project maintains a fork of llvm at [llvm-project](https://github.com/rust-lang/llvm-project/) where it applies patches on top of the llvm project. This mostly seems to be to get unwinding support for the SGX project, and there may be other patches that I'm unaware of.

There is a lot of machinery in the build system to support compiling `libunwind` on other platforms, and I needed to add additional patches to llvm in order to add support for Xous.

Rather than continuing down this path, it seemed much easier to use a Rust-based library. The `unwinding` crate by `@nbdd0121` fits this description perfectly.

### Future work

This could potentially replace the custom patches for `libunwind` on other platforms such as SGX, and could enable unwinding support on many more exotic platforms.

### Anti-goals

This is not designed to replace `libunwind` on tier-one platforms or those where unwinding support already exists. There is already a well-established approach for unwinding there. Instead, this aims to enable unwinding on new platforms where C++ code may be difficult to compile.
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crates Merge commit 'e402c494b7c7d94a37c6d789a216187aaf9ccd3e' into sync-from-ra 2023-12-04 09:19:15 +02:00
docs Initial support for implicit drop inlay hint 2023-12-01 16:16:46 +03:30
editors/code Auto merge of #16000 - HKalbasi:drop-inlay-hint, r=HKalbasi 2023-12-01 13:36:08 +00:00
lib Cancelable Initialization 2023-11-21 21:29:33 +01:00
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.git-blame-ignore-revs add prettier format commit to ignored revisions 2022-05-17 18:15:51 +01:00
.gitattributes Fix .gitattributes for test_data 2022-07-24 14:05:35 +02:00
.gitignore internal: add "Shuffle Crate Graph" command 2021-12-07 16:37:19 +01:00
Cargo.lock internal: bump triomphe to 0.1.10 2023-11-28 10:27:17 -05:00
Cargo.toml internal: bump triomphe to 0.1.10 2023-11-28 10:27:17 -05:00
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rustfmt.toml Remove forcing \n via rustfmt 2019-11-02 22:19:59 +03:00
triagebot.toml triagebot exclude_labels -> exclude_titles 2023-09-16 10:58:53 -06:00

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