Wasmtime GitHub notifications bot (Feb 29 2024 at 02:56): Wasmtime GitHub notifications bot (Feb 29 2024 at 02:56):alexcrichton opened PR #8028 from alexcrichton:register-frame-weirdness to bytecodealliance:main:
When native unwinding information is enabled Wasmtime will use the
__register_frameAPI on Unix platforms to inform the runtime of the unwinding information generated for wasm modules. This function, however, has a different interface in libgcc vs libunwind. This means that we need to detect which is being used and adapt our calls to it appropriately.Previously this decision was static. FreeBSD and Linux glibc would assume libgcc and everything else was assumed to be libunwind. It's possible to use libgcc on other platforms, however, such as with musl. The goal of this PR is to make the detection here more robust.
Specifically this PR now probes for a symbol at runtime rather than relying on a compile-time decision. That way we can see what we got at runtime and make the decision then.
Closes #7997
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Wasmtime GitHub notifications bot (Feb 29 2024 at 02:56):alexcrichton requested wasmtime-core-reviewers for a review on PR #8028.
Wasmtime GitHub notifications bot (Feb 29 2024 at 02:56):alexcrichton requested pchickey for a review on PR #8028.
Wasmtime GitHub notifications bot (Feb 29 2024 at 16:40):pchickey submitted PR review.
Wasmtime GitHub notifications bot (Feb 29 2024 at 17:27):alexcrichton merged PR #8028.
Last updated: Dec 23 2024 at 12:05 UTC