For instance, ending with 0x009e (which you can do with CW 0x009e) indicates a LRI $ac0.m instruction, but there is no immediate value to load, so before whatever garbage in memory existed after the end of the file was used.
The bounds-checking also previously assumed that IRAM or IROM was being used, both of which were exactly 0x1000 long.
Spirv-cross's MSL codegen makes the amazing choice of compiling calls to inout functions as `State temp = s; call_function(temp); s = temp`. Not all Metal backends handle this mess well. In particular, it causes register spills on Intel, losing about 5% in performance.
X30 is used in fewer situations than the comment was claiming.
(I think that when I wrote the comment I was counting the use of X30
as a temp variable in the slowmem code as clobbering X30, but that
happens after pushing X30, so it doesn't actually get clobbered.)
This is used when fastmem isn't available. Instead of always falling
back to the C++ code in MMU.cpp, the JIT translates addresses on its
own by looking them up in a table that Dolphin constructs. This is
slower than fastmem, but faster than the old non-fastmem code.
This is primarily useful for iOS, since that's the only major platform
nowadays where you can't reliably get fastmem. I think it would make
sense to merge this feature to master despite this, since there's
nothing actually iOS-specific about the feature. It would be of use
for me when I have to disable fastmem to stop Android Studio from
constantly breaking on segfaults, for instance.
Co-authored-by: OatmealDome <julian@oatmealdome.me>
This game has stale icache values in the logs during certain
loadscreens, and after disabling them I was able to play through the
entire game, with one crash that may have been related to savestates and
memory cards since during that loadscreen it said the memory card did
not match.
This does cause invalid reads to be spit out during parts of the game,
but you can safely skip them. Enabling MMU seems to surpress the
invalid reads without side-effects, but the aforementioned
memcard/savestate crash was with MMU on.
