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PatchEngine: Handle MSR more cleanly

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Instead of fiddling with the MSR value, just reschedule and try again
after the game fixes it itself.
This commit is contained in:
EmptyChaos
2016-09-24 15:14:51 +00:00
parent 83407263e5
commit c3cef54910
6 changed files with 46 additions and 33 deletions
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16
Source/Core/Core/GeckoCode.cpp
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@ -157,25 +157,11 @@ static Installation InstallCodeHandlerLocked()
return Installation::Installed;
}
void RunCodeHandler(u32 msr_reg)
void RunCodeHandler()
{
if (!SConfig::GetInstance().bEnableCheats)
return;
// Dolphin's hook mechanism is less 'precise' than Gecko OS' which detects particular
// instruction sequences (uses configuration, not automatic) that only run once per frame
// which includes a BLR as one of the instructions. It then overwrites the BLR with a
// "B 0x800018A8" to establish the hook. Dolphin uses its own internal VI interrupt which
// means the PC is non-deterministic and could be anywhere.
UReg_MSR msr = msr_reg;
if (!msr.DR || !msr.IR)
{
WARN_LOG(ACTIONREPLAY, "GeckoCode: Skipping frame update. MSR.IR/DR is currently disabled. "
"PC = 0x%08X, MSR = 0x%08X",
PC, msr_reg);
return;
}
std::lock_guard<std::mutex> codes_lock(s_active_codes_lock);
// Don't spam retry if the install failed. The corrupt / missing disk file is not likely to be
// fixed within 1 frame of the last error.