Design
The Strontium VM is a portable code machine, a simulated processor which executes a pre-defined set of arithmetic, comparison and control flow instructions, encoded as bytecode. Instead of registers or a stack, this machine uses an array of bits to store run-time data.
Data management
Data is stored and retrieved as bits from memory, which is a dynamic array. The virtual machine provides instructions for bit-wise arithmetic, comparison and memory management (set, unset, allocate, deallocate) operations. Language implementations may store data in this memory, in a format specific to their needs.
Instructions
We're working with a 32-bit instruction set, so we can store four bytes in a single instruction. After the opcode has been put into the buffer, there isn't enough room for a 32-bit memory address, so they use a separate instruction. Due to this, the virtual machine may jump ahead from 2 to 7 steps when interpreting a single instruction.
Status
This project is still in an early stage of development. The current features work as expected, but there may be breaking changes in the future. Let's talk if you're interested on working on this project!
Tests
The following tests have been implemented:
vm::memory::tests::shrinkvm::memory::tests::shrink_error_handlingvm::memory::tests::growvm::memory::tests::lshiftvm::memory::tests::rshiftvm::memory::tests::single_andvm::memory::tests::single_orvm::memory::tests::single_xorvm::memory::tests::single_notvm::memory::tests::range_andvm::memory::tests::range_orvm::memory::tests::range_xorvm::memory::tests::range_not
License
This project is licensed under Creative Commons BY-SA NC 4.0