[GR-57593] Implement WebAssembly exception handling proposal. #12227
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Co-authored-by: Florian Huemer <[email protected]>
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Move exceptionTableOffset field to WasmFunctionNode. No need to emit exception table offset in instrumented bytecode array.
Throw on tag import and export identifiers if exception handling is disabled.
Fix reading more than one exception handler. Fix exn_read: should return exception fields, not the tag. Add exn_tag. Fix tag count limit. Fix THROW bytecode length. Simplify ParserState.exit(), moving out TryTableFrame handling.
Use separate local for exceptionTableOffset. Outline pushing exception fields and/or reference onto the stack.
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Initial implementation of the Exception Handling proposal in GraalWasm.
Fixes #9764