Thanks for the welcome and for testing this out! First of all, don't even try 64-bit. PearPC sources make a lot of assumptions that make it 32-bit only in its current form. The crash report doesn't seem to have anything to do with jitc, and the line "misaligned_stack_error_" seems very odd...

I've successfully compiled PearPC with jitc enabled for OSX. I haven't had much chance to test it yet, so I'm not making any promises, but it starts up fine for me on Snow Leopard. t3rra was on the right track about AT&T syntax, since Apple's assembler has a horrible bug with backward jumps in I...