It's in the mupen64-amd64 SVN trunk right now. It was a large effort - I basically duplicated all of the 32-bit dynarec source files, renamed it to x86_64, and rewrote the whole thing to operate natively on x86_64 CPUs, but only using the 32-bit operations for maximum compatibility with the current 32-bit code and thus fewer bugs. It's a little slower than the 32-bit dynarec right now (it will take more memory as well, as the 64-bit code takes more space), but after optimizing the code to take advantage of the bigger registers and expanded register file of the x86_64, it will probably be faster (or take less CPU to run at real-time speed). It's not perfect yet, some games throw exceptions - so there's at least 1 bug left. But SM64 and mkart played perfectly. This is one of the most fascinating pieces of code that I've ever worked on. It is structured as self-modifying code: the C code (after compilation, at run time) writes assembly code translated from the r4300 state machine to the Intel/AMD CPU, then it assembles and runs it. And the running automatically-generated assembly code can call back into the functions in the C code. Quite ingenious.
Once I fix the outstanding problems and optimize it, I'll make a new release of mupen64-amd64. Until then, beta testers are welcome as usual to get the source from svn and play with it.
Report any issues or observations here.
Once I fix the outstanding problems and optimize it, I'll make a new release of mupen64-amd64. Until then, beta testers are welcome as usual to get the source from svn and play with it.
Report any issues or observations here.
