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LibJS/JIT: Support alternative entry point blocks
If Interpreter::run_and_return_frame is called with a specific entry point we now map that to a native instruction address, which the JIT code jumps to after the function prologue.
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4 changed files with 46 additions and 5 deletions
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@ -31,7 +31,7 @@ public:
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NativeExecutable(void* code, size_t size, Vector<BytecodeMapping>);
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~NativeExecutable();
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void run(VM&) const;
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void run(VM&, size_t entry_point) const;
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void dump_disassembly(Bytecode::Executable const& executable) const;
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BytecodeMapping const& find_mapping_entry(size_t native_offset) const;
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Optional<UnrealizedSourceRange> get_source_range(Bytecode::Executable const& executable, FlatPtr address) const;
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@ -42,6 +42,7 @@ private:
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void* m_code { nullptr };
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size_t m_size { 0 };
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Vector<BytecodeMapping> m_mapping;
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Vector<FlatPtr> m_block_entry_points;
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mutable OwnPtr<Bytecode::InstructionStreamIterator> m_instruction_stream_iterator;
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};
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