NodeMach

NodeMach, the RISC-V 64 virtual environment for NodeNet

NodeMach?

NodeMach is a virtual environment standard for running the operating system NodeNet. It acts as a layer between devices, like the CPU or the network adapter, that translates the access protocols into simpler, more versatile versions. It is essentially a RISC-V emulator virtual machine used for running NodeNet.

NodeNet?

A network based operating system based on the idea that everything is a node and can be connected to another node provided the nodes are compatible. (ex. /path/to/image -> /path/to/framebuffer)

Current project status

• Complete rv64i implementation
• Incomplete rv64m implementation
• Incomplete rv64a implementation
• Dual hart CPU
• Basic 39bit paging
• Hacky device support
• Basic PLIC
• No CLINT
• Basic CSR support

Building

Dependencies: clang, make

build with

make

run with

cp /path/to/your/payload.elf build/payload.elf 
make run

build and run with

cp /path/to/your/payload.elf build/payload.elf 
make run-update

Debugging

^C (Ctrl + C) or send the process a SIGINT to pull up the debugger.

Command	Description
show	Show command buffer(used for debugging of the debugger)
step	Step one CPU cycle
stepto <addr>	Run the CPU until the program counter is equal to <addr>
read32 <addr>	Read 4x 32bit values from <addr>
read64 <addr>	Read 4x 64bit values from <addr>
ls	List CPU registers
resume	Exit debugger, continuing to run the payload
exit	Exit the debugger, exiting the program

This repo is part of the NodeNet project

Official NodeNet website: NodeNet.work