This is a preview of what will come next on box64 v0.4.6. Because developpement cycle of box64 is quite long, we thought we could preview some of the new or improve feature that come in the version before the release. So here it is: Preview of the Improved Handling of non-4K pagesize. What is non-4K…
Tag: internals
Utilizing RVV and More!
Since the last post about it, the dynarec (dynamic recompiler, a Just-In-Time recompilation of x86 code) changed a lot. It still works in four major steps, but now there are a lot more intermediary steps. So let’s see how it works now! Note: this article will focus on the ARM version of the dynarec on…
Note: this article is pretty technical. Basic understanding of what registers are is a strict minimum required to understand what follows. What is AVX? AVX (and its extension AVX2) are complex x86_64 instruction sets which extends the SSE4 instruction set. It mandates the existence of extensions of the 16 SSE 128-bits-wide XMM registers (called XMM0…
After talking about the dynarec, we’re going to talk about library wrapping. This article will be very technical from start to finish. Note: until the “Differences” paragraph, everything said is identical for box86 and box64. As such, until then, you can replace every “box86” with “box64” and “x86” with “x86_64”. The first step: loading As…
Note: this article supposes you have already read part 1. While it shouldn’t be required, you should still give it a try. Now that we can boot to C, we need to start working on the C library. Let’s start with memory management. What’s needed here? So, what is memory management? Well, it can be…
Have you ever wondered, “How does the computer boot? How does the OS know what to do when”? Well, I did too, and so took it upon myself to… develop an OS. Intro Well, when I say “develop an OS”, I mean that I started writing something that could boot into an emulator. I didn’t…
A high‑level view of box86/box64 and a low‑level view of the dynarec This article explains the technical details about how box86 and box64 works (at the high level for the start and a low level for the dynarec). At the start, box86 (and box64) will extract useful informations about the executable being run: where is…