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PS3 SPU Emulation Pre-Alpha Module, Allows x86 PCs to Emulate SPU


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123w ago - TeaM_AC1D in the wild, from one of our newest and highly skilled members KDSBest we have something nice for the scene - a PS3 SPU emulation pre-alpha module that allows x86 PCs to emulate the SPU.

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Hi Community,

I wanted to contribute to the scene , so I coded a tool that might help the community our members and fellow dev's. This Tool is intended for dev's so please be careful if you don't know what you do. I will not be held responsible for any harm.

My tool is a emulator for PS3 modules (e.g metldr), it is in pre alpha stage but I thought, it would be great to get some community feedback.

How to use:

Not all SPU Commands are implemented yet, but it is easily extendable and I will make it support DMA, all SPU Commands and SPU Mailbox soon.

First open a .kds file. Check out the metldr.kds to see an example. The rest is like a normal debugger. If you put dumps of your reversed functions in the KnownFunctions folder, it will detect it and mark that function for you.

Just for example Mark the whole cellSpuAesDecryptCbcCfb128 function in HexView in IDA -> Right Click -> Save to File. Name the File "cellSpuAesDecryptCbcCfb128" without extension and copy it to the KnownFunctions Directory of the Emulator. Now all similar functions get automatic detected!

"Step" Executes next command, "Run" runs till breakpoint (Breakpoints are not implemented yet). Debug SPU Code in Windows.

Any questions? Just get back to me at twitter

Stay tuned

KDSBest
twitter.com/#!/KDSBest

PS: Thx for MK and cfwprophet (Team Acid) and of course to fail0verflow for anergistic, which helps a lot with it and even uses some functions of them.




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Comments 22 Comments - Go to Forum Thread »

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PS3 News's Avatar
#22 - PS3 News - 118w ago
Shortly following his previous revision, PlayStation 3 developer KDSBest has updated the PS3 SPU Emulation to version 0.9, which allows x86 PCs to emulate the SPU.

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Below are some related updates via Twitter (linked above):

Found the mistake in SPU Emu... -.- FAIL! sf* commands do rb-ra I did ra-rb -.- works perfectly now.

The sp somehow land in code section and overrides destroys code. so i don't update the code while the ls changes. This does the trick hotfix.

New spu emu soon dump function calls and channel access and so on.

SPU Emu v0.9: fixed sf* instructions and bugfixes and callstack functions. Dumps all branches now files get big ^^.

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PS3 News's Avatar
#21 - PS3 News - 118w ago
While it hasn't been long since his previous release, today PlayStation 3 developer KDSBest has updated the PS3 SPU Emulation Module to version 0.8.1, which allows x86 PCs to emulate the SPU.

Download: [Register or Login to view links]

Below are some related Tweets on the update via Twitter (linked above), as follows:

New spu emu soon dump function calls and channel access and so on.. btw no spu stuff just optimised code

Crypto function instructions implemented, aim_spu_module runs fine (v0.8).

Thanks to my tester we found a heavy bug which made the aim not run correctly. Fixing it.

I still got a problem with one instruction, the problem is idk what instruction, but aim decrypts the eid0 section fine with spu emu (v0.8.1).

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PS3 News's Avatar
#20 - PS3 News - 119w ago
Following up on their previous release last week, today KDSBest and crew have updated the PS3 SPU Emulation Module to version 0.8, which allows x86 PCs to emulate the SPU.

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To quote via Twitter (linked above):

The aim module runs to the hash check of EID0 which fails, cause I miss the data. SPU Emulation v0.8: gitbrew.org/~KDSBest/SPU%20simulation%20v0.8.rar

Extract the ofw 3.55 and there is the aim_spu_module.self. Make an elf of it. There you go. It's sony code I can't give it to u.

I love Physic Engines and I love the PS3. I guess I will port Box2D to psl1ght ^^

For the news sites: gitbrew.org/~KDSBest/SPU%20simulation%20v0.8.rar ... crypto function instructions implemented, aim_spu_module runs fine.

A tester tested the eid0 partial decryption of aim in anergistuc and in the spu emu. They match. Gj myself

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PS3 News's Avatar
#19 - PS3 News - 120w ago
Following up on his previous release, today PlayStation 3 developer KDSBest has updated the PS3 SPU Emulation Module to Beta 2, which allows x86 PCs to emulate the SPU for those wondering.

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To quote: Long time no see guys. I release SPU Emu Beta 2.

Since I am sick at current time and constant headache I just release what I already got. There are features to dump the LS parts, Register and so on.

Check out the source or metldr.kds for more infos. The kds script don't use all featues which are implemented but the most common one.

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niwakun's Avatar
#18 - niwakun - 121w ago
It is not for game emulation and it will never emulate the ppc. If you want that go to code.google.com/p/rpcs3/ , their work is not done and nearly nothing work, but they are the guys that write an emu for games and so on. This is just for reversing, so you don't have only a static analysis.

nah, x86/x64 computer wont be able to reach ppc's power. it's MIPS vs FLOPS

If you compare a Corei7 high end processor can do 70gflops with all cores being used while PS3 had 25Gflops multiply it to 6 SPU's so if you know how to multiply, there's no where it can be emulated right now. Unless someone is brave enough to use a videocard as the alternative processor since GPU's processing capability is much more powerful than x86/x64 processor does.

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