The gpsp was my first emulator port with dynamic recompilation. The problem in memory mapping and dynarec is that local data in Symbian OS is too far away from the user area, where we the new memory chunk for the dynamic area was created. My first solution was the memory trampoline pattern. However I got [...]
Archive of posts filed under the ARM category.
gpSP: Building A Memory Trampoline
Thanks to the original gpSP creator Exophase for tips. I was really confused with BL instructions and the fact that the memory address was pointing into wrong memory area. The problem was in Symbian OS memory mappings. It’s a very common problem with dynarec and Symbian. I had pr In Symbian you can create memory [...]
Degugging gpSP
The porting process of gpSP has been going forward quite well until this came up. The code behavior in debug session seems to be very strange. The following code should branch into the address located in register r0. The address 0x9cc00080 is marked as code in Symbian OS, and IMB_Range() has been called in prior [...]
Using ARM Memory Barrier in Symbian OS
Today I have been digging the methods to to make a gpSP( I think this is the best GBA emulator) port to Symbian OS.Thanks to the Exophase for developing this wonderful piece of software and for ZodTTD for the awesome ARM port! The gpSP is running “generated” ARM binary in the ARM processor’s memory, so [...]
