I haven't tested this extensively on real hardware, but I do know that bad things happen if the address isn't properly aligned, and libogc says it should be 32-byte aligned.
A few weeks ago, a vtuber tweeted that they had to remove a vod of their stream because Dolphin Emulator showed some personal information during the steam, and left a warning to everyone else that Dolphin shows the account name of the computer. And yea, we do, we show the full directory of the memory card every time a memory card is written, and due to mandatory Microsoft account nonsense, that is very likely to contain someone’s real name.
Fortunately this is very easy for us to solve. This change simply removes the filename from wrote memory card contents string. That’s it. All functionality of the wrote memory card OSD message remains the same, it just doesn’t say where the memory card is anymore.
There are lots of other potential solutions to this but after talking on IRC it seems the simplest one is the best.
See the comment added by this commit. We were previously guarding against
overshooting in address calculations, but not against undershooting.
Perhaps someone assumed that the displacement of an x86 loadstore was
treated as unsigned?
Note: While the comment says we can undershoot by up to 2 GiB, in
practice Jit64 as it currently behaves won't actually undershoot by more
than 0x8000 if my analysis is correct. But address space is cheap, so
let's guard the full 2 GiB.
Now that we've flipped the C++20 switch, let's start making use of
the nice new <bit> header.
I'm planning on handling this move away from BitUtils.h incrementally
in a series of PRs. There may be a few functions remaining in
BitUtils.h by the end that C++20 doesn't have any equivalents for.
When emulated GBAs were added to Dolphin, it was possible to control them
using the GC TAS input window. (Z was mapped to Select.) Unaware of this,
I broke the functionality in b296248.
To make it possible to control emulated GBAs using TAS input again,
I'm adding a proper TAS input window for GBAs, with a real Select button
and no analog controls.
