![]() ![]() You likely want to have callbacks on bytecode functions, i.e. Bytecode function callbacksĪ visualization on virtual function callbacks This way a function can use all available registers while not corrupting the register state from code prior or after the function call. Finally, the current register state is overwritten with the restored one. This backup-state is then modified to carry over modifications. The RETURN-operation retrieves the previously backed-up register state. The Rusty-JSYC compiler automatically provided a list of dependencies However, they must be explicitly provided for the virtual context. Every JavaScript code has dependencies, like window, document or setInterval, in the real JavaScript context they are provided. The registers array gets initialized with the dependencies of the bytecode. The operations array gets initialized with all required operations. Initialization Before the execution starts, everything must get initialized. ![]() And gets increment whenever vm.getByte() is called. Further there is a bytecode pointer that always points to the next byte in the bytecode. The VM in Rusty-JSYC mainly contains a registers list, an operation array and the bytecode. This sounds a lot more horrifying than it actually is.
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