MMX/SSE bugs (SHUFPS, missing PEXTRW/PINSRW, SSE version of PSADBW)

[joncampbell123]

Describe the bug

Steps to reproduce the behaviour

Run Quake 3 with Voodoo 3 drivers

Expected behavior

No response

What operating system(s) this bug have occurred on?

Unknown

What version(s) of DOSBox-X have this bug?

The latest, I assume

Used configuration

No response

Output log

No response

Additional information

No response

Have you checked that no similar bug report(s) exist?

• I have searched and didn't find any similar bug report.

Code of Conduct & Contributing Guidelines

• I agree to follow the code of conduct and the contributing guidelines.

[joncampbell123]

Eugh, I've mixed up MMX and SSE opcodes. That's going to need some cleanup.

[fuel-pcbox]

This is why i did SSE1, SSE2, and SSE3 all in separate files from MMX lol

[BridgeHeadland]

What happened to the Windows installer version of the last nightly build?
https://github.com/joncampbell123/dosbox-x/actions/runs/11906973804

[joncampbell123]

It looks like I implemented SSE instructions where the MMX version should go.

[joncampbell123]

What happened to the Windows installer version of the last nightly build? https://github.com/joncampbell123/dosbox-x/actions/runs/11906973804

Suddenly the CI build doesn't recognize the ARM desktop build? https://github.com/joncampbell123/dosbox-x/actions/runs/11906973804/job/33179903818#step:12:27

[fuel-pcbox]

What happened to the Windows installer version of the last nightly build? https://github.com/joncampbell123/dosbox-x/actions/runs/11906973804

That is completely unrelated to this issue. Why did you post that here? You could've notified Jon of this on the Discord or something or made a new GitHub issue.

[the-burrito-triangle]

Maybe this isn't relevant here, but LLVM-Clang and GCC emulate MMX with SSE and SSE2, maybe looking at their implementation might help? If not, sorry for the noise.

https://www.phoronix.com/news/LLVM-Clang-MMX-Intrinsics-SSE2
https://www.phoronix.com/news/GCC-MMX-Intrinsics-With-SSE
https://www.phoronix.com/news/GCC-10-Emulating-MMX-With-SSE

[fuel-pcbox]

PCBox emulates both MMX and SSE1 fairly well at this point, so its implementation may also help :p