[B2-devel] Activating Apple DR emulator

[Gwenole B. <gb...@di...>]

Hi,

I fixed patchery around Apple's DR emulator for NewWorld ROMs this 
morning. In native mode, I indeed get a nice speedup on 68k code. 
However, there doesn't seem to be any benefit for Execute68k(), at 
least as it could be seen through Disk performance in Speedometer 4 
testing. Besides, in emulated PPC mode, it appears the DR emulator has 
no chance to translate code, in other words, I don't see any benefit.

Last but not least, I noticed MacOS occasionally (really hard to 
reproduce) crashes within DR code. I don't know why but I could only 
see that 68k PC fetched from stack is total garbage. It could be that 
(i) one patch is still wrong, or (ii) stack got corrupted through 
multiple nested Execute68k()?

In summary, if you are interested to test it, cvs update -d and switch 
the #if in emul_op.cpp accordingly. For now, the 68k DR emulator is 
disabled.

PS: Could someone check I did not break BeOS/PPC compilation?

Bye,
Gwenole.