* Use atomic waitables instead instead of global thread wait as often as possible.
* Add ::is_stopped() and and ::is_paued() which can be used in atomic loops and with atomic wait. (constexpr cpu flags test functions)
* Fix notification bug of sys_spu_thread_group_exit/terminate. (old bug, enhanced by #9117)
* Function time statistics at Emu.Stop() restored. (instead of current "X syscall failed with 0x00000000 : 0")
* minor coding style adjustment
* Qt: simplify osk dialog buttons
* replace std::find_if with convenience functions
* RSX: use sv in swizzle comparison
idk, I'll remove this if it was intentional.
* overlays/osk: rename enter to return
This one confused me and make me look for a bug that caused the "enter" key to be disabled, while it was actually the return key (obviously xD).
I saw stvx v128{0} (aligned 16-bytes store) usage on the first 16-bytes of CellSaveDataCBResult before funcStat in fw.
Also I saw 4 stw of u32{0} on it as well before funcFile, funcFixed and funcList.
So just add the resets for result before all callbacks, and make all
members of savedata_ontext 16 -byte aligned in case there are more
members guaranteed to be aligned.
* Always memset 0 setBuf->buf (to bufSize) before funcStat if the direcory is not new.
* Always memset 0 setBuf->buf (to bufSize) if listGet->dirNum became non-zero (listGet->dirListNum can be zero yet memset still occurs) .
* Clear traces of setList setup before funcStat (after funcFixed/List, only if listGet->dirNum != 0, callback can hack this value and prevent the memset).
* Check listSet->fixedListNum.
* Check listSet->fixedList for nullptr and its directory items names.
* Check listSet->focusDirName for nullptr and directory name.
* Check listSet->newData->iconPosition.
* Check listSet->newData->dirName for nullptr and directory string.
* Check statSet->setParam->parental_level for old sdk.
* Return an error if listSet->focusPosition is NEWDATA and listSet->newData is nullptr.
* Simplify savedata directory list selection.
* Allow '_' at filenames start and extension.
* Check if reading offset is valid, fix error code to CELL_SAVEDATA_ERROR_FAILURE.
* Don't create empty file on error of write ops.
* Don't allow "." and ".." filenames on funcFile, return CELL_SAVEDATA_ERROR_BROKEN.
