Richard Henderson wrote: > On 01/26/2011 08:00 AM, Alexander Graf wrote: > >> Keeping it only inside of the translator would break on page faults, as >> the lower 32 bits of the register would lie around in a temporary which >> is invisible for the page fault resolver. >> > > Given that QEMU doesn't support truely async signals, and the fact that > the translator can tell which insns can fault, I can't imagine that this > is actually a problem. > > You should get the same sequence of writebacks when translating the TB > the second time for tcg_gen_code_search_pc. > > Am I totally confused here? >
Oh, you mean basically to have the following: TCGv_i32 regs32[16]; TCGv_i64 regs[16]; Then declare both as globals with offset and just switch between the access type using a disas struct variable. Once the TB ends, I'd obviously have to sync back to 64 bit again. Yes, that would work. I'll see if I can get that rolling once I'm done with the CC optimizations :) Alex
