Andreas Kling cfdb8a2756 LibJS/JIT: Update "unwind context" stack in JIT code ...

Until now, the unwind context stack has not been maintained by jitted
code, which meant we were unable to support the `with` statement.
This is a first step towards supporting that by making jitted code
call out to C++ to update the unwind context stack when entering/leaving
unwind contexts.

We also introduce a new "Catch" bytecode instruction that moves the
current exception into the accumulator. It's always emitted at the start
of a "catch" block.

2023-11-12 14:21:41 +01:00

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