PEpeterkelly·Mar 18, 2018
Here's the switch statement, if you're looking for it: https://github.com/jakogut/tinyvm/blob/master/include/tvm/tv...
In TinyVM – A small and easy to understand virtual machine in Cjakogut
tinyvm
C2011–2018
jakogut / tinyvm
tinyvm
TinyVM is a small, fast, lightweight virtual machine written in pure ANSI C.
9Distinct people
10Mentions
0Explicit recommenders
3.3KGitHub stars
What to know before exploring
What it is
TinyVM is a small, fast, lightweight virtual machine written in pure ANSI C.
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
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This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year10 dated mentions
Observed mentions: 2011-07-02 20:34:13 UTC to 2018-03-18 03:22:51 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2011 | 2011-01-01 00:00:00 UTC | 2012-01-01 00:00:00 UTC | 6 | 2 | 4 |
| 2012 | 2012-01-01 00:00:00 UTC | 2013-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2013 | 2013-01-01 00:00:00 UTC | 2014-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2014 | 2014-01-01 00:00:00 UTC | 2015-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2015 | 2015-01-01 00:00:00 UTC | 2016-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 4 | 1 | 3 |
What Hacker News says
10 sourcesI'm kind of worried about usage of strcmp here:
https://github.com/jakogut/tinyvm/search?q=strcmp
It's also very easy to crash the thing, either with a malformed input file or afl-fuzz. Are you sure C was the right choice here?
In TinyVM – A small and easy to understand virtual machine in CI’ve found that switch fast, in a few clicks, reading this on my phone:
https://github.com/jakogut/tinyvm/blob/master/include/tvm/tv...
I’ve used the info you provided as the start, of course.
In TinyVM – A small and easy to understand virtual machine in CTinyVM – A small and easy to understand virtual machine in C
241 points · Open discussionSaying "there are lots of VMs with security problems, therefore VMs cannot be secure" is faulty logic.
Most (perhaps all) existing VMs are quite complicated and are not designed specifically to be secure, but that does not have to be the case.
I bet I could write a secure VM in C that interprets some simple toy "virtual machine code" with around, say, 2^5 instructions. What I have in mind here is something like TinyVM [1].
[1] https://github.com/GenTiradentes/tinyvm
In The Immutable Laws of Computer SecurityTinyVM 1.0 released; adds 16 lines of code, registers, a VM stack and more
121 points · Open discussionIn your first snippet, you seem to be assuming that JMP is direct, and in the second, you seem to be assuming that JMP is indirect. It appears to be direct: https://github.com/GenTiradentes/tinyvm/blob/master/tvm.c#L5...
You could, of course, do it with self-modifying code if that's possible. (I'm not familiar enough with the VM to know if it is.)
In TinyVM: A lightweight, fast virtual machine in < 500 lines of ANSI CA friend asked me if this was a good example to learn C from. I had to say no; in half an hour of looking at the code, I found seven bugs in a single 60-line routine. Details at:
https://github.com/GenTiradentes/tinyvm/commit/e78c192313c35...
In TinyVM: A lightweight, fast virtual machine in < 500 lines of ANSI Ccheck the commit message:
https://github.com/GenTiradentes/tinyvm/commit/35c2fdbdabc63...
In TinyVM: A lightweight, fast virtual machine in < 500 lines of ANSI CTinyVM: A lightweight, fast virtual machine in < 500 lines of ANSI C
113 points · Open discussion