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Jit: Raise program exception on floating point exceptions

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This is done entirely through interpreter fallbacks. It would
probably be possible to implement this using host exception
handlers instead, but I think it would be a lot of complexity
for a rarely used feature, so let's not do it for now.

For performance reasons, there are two settings for this feature:
One setting which does enables just what True Crime: New York City
needs and one setting which enables it all. The latter makes
almost all float instructions fall back to the interpreter.
This commit is contained in:
JosJuice
2021-08-18 12:39:02 +02:00
parent 7f7748e181
commit 9f525d69c8
24 changed files with 216 additions and 88 deletions
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11
Source/Core/Core/BootManager.cpp
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@ -75,6 +75,8 @@ private:
bool bCPUThread;
bool bJITFollowBranch;
bool bSyncGPUOnSkipIdleHack;
bool bFloatExceptions;
bool bDivideByZeroExceptions;
bool bFPRF;
bool bAccurateNaNs;
bool bMMU;
@ -109,6 +111,8 @@ void ConfigCache::SaveConfig(const SConfig& config)
bCPUThread = config.bCPUThread;
bJITFollowBranch = config.bJITFollowBranch;
bSyncGPUOnSkipIdleHack = config.bSyncGPUOnSkipIdleHack;
bFloatExceptions = config.bFloatExceptions;
bDivideByZeroExceptions = config.bDivideByZeroExceptions;
bFPRF = config.bFPRF;
bAccurateNaNs = config.bAccurateNaNs;
bDisableICache = config.bDisableICache;
@ -154,6 +158,8 @@ void ConfigCache::RestoreConfig(SConfig* config)
config->bCPUThread = bCPUThread;
config->bJITFollowBranch = bJITFollowBranch;
config->bSyncGPUOnSkipIdleHack = bSyncGPUOnSkipIdleHack;
config->bFloatExceptions = bFloatExceptions;
config->bDivideByZeroExceptions = bDivideByZeroExceptions;
config->bFPRF = bFPRF;
config->bAccurateNaNs = bAccurateNaNs;
config->bDisableICache = bDisableICache;
@ -256,6 +262,9 @@ bool BootCore(std::unique_ptr<BootParameters> boot, const WindowSystemInfo& wsi)
core_section->Get("JITFollowBranch", &StartUp.bJITFollowBranch, StartUp.bJITFollowBranch);
core_section->Get("SyncOnSkipIdle", &StartUp.bSyncGPUOnSkipIdleHack,
StartUp.bSyncGPUOnSkipIdleHack);
core_section->Get("FloatExceptions", &StartUp.bFloatExceptions, StartUp.bFloatExceptions);
core_section->Get("DivByZeroExceptions", &StartUp.bDivideByZeroExceptions,
StartUp.bDivideByZeroExceptions);
core_section->Get("FPRF", &StartUp.bFPRF, StartUp.bFPRF);
core_section->Get("AccurateNaNs", &StartUp.bAccurateNaNs, StartUp.bAccurateNaNs);
core_section->Get("DisableICache", &StartUp.bDisableICache, StartUp.bDisableICache);
@ -370,6 +379,8 @@ bool BootCore(std::unique_ptr<BootParameters> boot, const WindowSystemInfo& wsi)
StartUp.bAccurateNaNs = netplay_settings.m_AccurateNaNs;
StartUp.bDisableICache = netplay_settings.m_DisableICache;
StartUp.bSyncGPUOnSkipIdleHack = netplay_settings.m_SyncOnSkipIdle;
StartUp.bFloatExceptions = netplay_settings.m_FloatExceptions;
StartUp.bDivideByZeroExceptions = netplay_settings.m_DivideByZeroExceptions;
StartUp.bSyncGPU = netplay_settings.m_SyncGPU;
StartUp.iSyncGpuMaxDistance = netplay_settings.m_SyncGpuMaxDistance;
StartUp.iSyncGpuMinDistance = netplay_settings.m_SyncGpuMinDistance;