carp

The code looks really clean to me. If you feel the urge to convert the VM to a JIT, rather than calling function pointers for each instruction, you might find this blog post…

Very concise implementation. I keep thinking there's missing files or at least I'm missing something in my understanding. :) I wrote a 0-operand VM in C a few years ago that used…

Can you give some directions for how to run it? ``` $ git clone https://github.com/tekknolagi/carp $ make $ ./carp $ ./carp --help # after peeking in carp.c help msg ``` There's…

Seems like [1] could benefit from use of the X macro [2], should make adding new instructions much easier and you can avoid the hassle of having to keep two separate tables in…

Ah, I feel you — no problem! I do really love the binop macro.

Can you give some directions for how to run it? ``` $ git clone https://github.com/tekknolagi/carp $ make $ ./carp $ ./carp --help # after peeking in carp.c help msg ``` There's…

You're welcome. I pulled the new commits, but I'm still having trouble running the examples: ``` $ ./carp -f examples/carp/call.carp Unknown label <add> ``` (I am very interested…

Nope, rebuilding didn't help.. never mind, I'll look into it later tonight. Edit: I just noticed you changed the target (why?) and are also immediately deleting carp.out. So I…

Out of curiosity - How are you testing your VM? meaning, how do you know it actually works correctly? I didn't see any tests in the github repository

I am not testing — and I know this is horrifying. I need to write some tests. D:

Is there a reason for the combination of register-based (logical ops) and stack-based (arithmetic ops) operations? Otherwise fun project.

The implementation is really clean! The mixing of general-purpose registers, special-purpose registers and the stack makes the instruction set a bit weird, though. For example,…

I am not testing — and I know this is horrifying. I need to write some tests. D:

I am now starting to write some tests with libtap. If you are game, come help out! :D

Hi there! Sorry for this. I actually have a help message but for some reason I forgot to commit it. It's coming soon! You run the examples like so: carp -f…

Alright, try now. Also — thanks for the pull request!

The code looks really clean to me. If you feel the urge to convert the VM to a JIT, rather than calling function pointers for each instruction, you might find this blog post…

You'd essentially be generating machine code on the fly and letting the cpu execute it, instead of interpreting anything yourself.

Can you give some directions for how to run it? ``` $ git clone https://github.com/tekknolagi/carp $ make $ ./carp $ ./carp --help # after peeking in carp.c help msg ``` There's…

You're welcome. I pulled the new commits, but I'm still having trouble running the examples: ``` $ ./carp -f examples/carp/call.carp Unknown label <add> ``` (I am very interested…

Can anyone link me to some literature on VMs? Sure, I can analyse the code, but from a design perspective, I would love to learn more about how VMs work, where they can be used,…

So I started off following this (http://en.wikibooks.org/wiki/Creating_a_Virtual_Machine/Register_VM_in_C) which was interesting but clearly never super influential in my design…

I started off following MSP430 but just kind of wanted to make my own thing.

As inspiration, I would suggest to look at the virtual machine (byte code interpreter) of the Lua language. You can find several papers describing the design at…

This is neat. For others interested in this sort of thing, https://challenge.synacor.com/ specifies a virtual machine, and comes with a binary that performs a self-test -- it is…

Very cool! Georgia Tech offers a class where you code a VM for the LC3b instruction set (http://users.ece.gatech.edu/~moin/s13a/hw.html). It was a great learning experience, and…