this post was submitted on 10 Nov 2023
249 points (98.1% liked)
Gaming
19977 readers
67 users here now
Sub for any gaming related content!
Rules:
- 1: No spam or advertising. This basically means no linking to your own content on blogs, YouTube, Twitch, etc.
- 2: No bigotry or gatekeeping. This should be obvious, but neither of those things will be tolerated. This goes for linked content too; if the site has some heavy "anti-woke" energy, you probably shouldn't be posting it here.
- 3: No untagged game spoilers. If the game was recently released or not released at all yet, use the Spoiler tag (the little ⚠️ button) in the body text, and avoid typing spoilers in the title. It should also be avoided to openly talk about major story spoilers, even in old games.
founded 5 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
This... Is not exactly how it works.
The way windows ABI works is syscalls always should go through dynamic libraries first, while on linux syscalls do syscall instruction/*. How windows syscalls work allows project like WINE just implement those libraries that will do linux syscalls. No instructions translated.
But with other architectures story is different. You either make instruction decoder for processor, make interpreter or make binary translator. First is itanium-way, second is naive way and third is how everyone does. Third is basically compiling one machine code to another. It has overhead of, well, compiling one machine code to another. And it works badly with other JIT compilers.
*there is vDSO, which is dynamic library, that implements syscalls like getting time. It is totally optional.
One thing you can do is translate 3d APIs. This sometimes makes 3d consoles easier to emulate than 2d consoles. PS1 emulation was basically solved when SNES emulation was playable but still had noticeable bugs.