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more accurate DTCM check

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This commit is contained in:
Arisotura
2021-10-28 22:41:42 +02:00
parent 43daa1c7d2
commit 15a66b1be1
3 changed files with 41 additions and 36 deletions
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53
src/CP15.cpp
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@ -50,6 +50,7 @@ void ARMv5::CP15Reset()
ITCMSize = 0;
DTCMBase = 0xFFFFFFFF;
DTCMMask = 0;
DTCMSize = 0;
memset(ICache, 0, 0x2000);
@ -102,25 +103,29 @@ void ARMv5::CP15DoSavestate(Savestate* file)
void ARMv5::UpdateDTCMSetting()
{
u32 newDTCMBase;
u32 newDTCMMask;
u32 newDTCMSize;
if (CP15Control & (1<<16))
{
newDTCMBase = DTCMSetting & 0xFFFFF000;
newDTCMSize = 0x200 << ((DTCMSetting >> 1) & 0x1F);
//printf("DTCM [%08X] enabled at %08X, size %X\n", DTCMSetting, newDTCMBase, newDTCMSize);
newDTCMMask = 0xFFFFF000 & ~(newDTCMSize-1);
newDTCMBase = DTCMSetting & newDTCMMask;
}
else
{
newDTCMBase = 0xFFFFFFFF;
newDTCMSize = 0;
//printf("DTCM disabled\n");
newDTCMBase = 0xFFFFFFFF;
newDTCMMask = 0;
}
if (newDTCMBase != DTCMBase || newDTCMSize != DTCMSize)
if (newDTCMBase != DTCMBase || newDTCMMask != DTCMMask)
{
#ifdef JIT_ENABLED
ARMJIT_Memory::RemapDTCM(newDTCMBase, newDTCMSize);
ARMJIT_Memory::RemapDTCM(newDTCMBase, newDTCMMask);
#endif
DTCMBase = newDTCMBase;
DTCMMask = newDTCMMask;
DTCMSize = newDTCMSize;
}
}
@ -600,12 +605,12 @@ void ARMv5::CP15Write(u32 id, u32 val)
case 0x910:
DTCMSetting = val;
DTCMSetting = val & 0xFFFFF03E;
UpdateDTCMSetting();
return;
case 0x911:
ITCMSetting = val;
ITCMSetting = val & 0x0000003E;
UpdateITCMSetting();
return;
@ -774,10 +779,10 @@ void ARMv5::DataRead8(u32 addr, u32* val)
*val = *(u8*)&ITCM[addr & (ITCMPhysicalSize - 1)];
return;
}
if (addr >= DTCMBase && addr < (DTCMBase + DTCMSize))
if ((addr & DTCMMask) == DTCMBase)
{
DataCycles = 1;
*val = *(u8*)&DTCM[(addr - DTCMBase) & (DTCMPhysicalSize - 1)];
*val = *(u8*)&DTCM[addr & (DTCMPhysicalSize - 1)];
return;
}
@ -797,10 +802,10 @@ void ARMv5::DataRead16(u32 addr, u32* val)
*val = *(u16*)&ITCM[addr & (ITCMPhysicalSize - 1)];
return;
}
if (addr >= DTCMBase && addr < (DTCMBase + DTCMSize))
if ((addr & DTCMMask) == DTCMBase)
{
DataCycles = 1;
*val = *(u16*)&DTCM[(addr - DTCMBase) & (DTCMPhysicalSize - 1)];
*val = *(u16*)&DTCM[addr & (DTCMPhysicalSize - 1)];
return;
}
@ -826,10 +831,10 @@ void ARMv5::DataRead32(u32 addr, u32* val)
*val = *(u32*)&ITCM[addr & (ITCMPhysicalSize - 1)];
return;
}
if (addr >= DTCMBase && addr < (DTCMBase + DTCMSize))
if ((addr & DTCMMask) == DTCMBase)
{
DataCycles = 1;
*val = *(u32*)&DTCM[(addr - DTCMBase) & (DTCMPhysicalSize - 1)];
*val = *(u32*)&DTCM[addr & (DTCMPhysicalSize - 1)];
return;
}
@ -847,10 +852,10 @@ void ARMv5::DataRead32S(u32 addr, u32* val)
*val = *(u32*)&ITCM[addr & (ITCMPhysicalSize - 1)];
return;
}
if (addr >= DTCMBase && addr < (DTCMBase + DTCMSize))
if ((addr & DTCMMask) == DTCMBase)
{
DataCycles += 1;
*val = *(u32*)&DTCM[(addr - DTCMBase) & (DTCMPhysicalSize - 1)];
*val = *(u32*)&DTCM[addr & (DTCMPhysicalSize - 1)];
return;
}
@ -871,10 +876,10 @@ void ARMv5::DataWrite8(u32 addr, u8 val)
#endif
return;
}
if (addr >= DTCMBase && addr < (DTCMBase + DTCMSize))
if ((addr & DTCMMask) == DTCMBase)
{
DataCycles = 1;
*(u8*)&DTCM[(addr - DTCMBase) & (DTCMPhysicalSize - 1)] = val;
*(u8*)&DTCM[addr & (DTCMPhysicalSize - 1)] = val;
return;
}
@ -897,10 +902,10 @@ void ARMv5::DataWrite16(u32 addr, u16 val)
#endif
return;
}
if (addr >= DTCMBase && addr < (DTCMBase + DTCMSize))
if ((addr & DTCMMask) == DTCMBase)
{
DataCycles = 1;
*(u16*)&DTCM[(addr - DTCMBase) & (DTCMPhysicalSize - 1)] = val;
*(u16*)&DTCM[addr & (DTCMPhysicalSize - 1)] = val;
return;
}
@ -929,10 +934,10 @@ void ARMv5::DataWrite32(u32 addr, u32 val)
#endif
return;
}
if (addr >= DTCMBase && addr < (DTCMBase + DTCMSize))
if ((addr & DTCMMask) == DTCMBase)
{
DataCycles = 1;
*(u32*)&DTCM[(addr - DTCMBase) & (DTCMPhysicalSize - 1)] = val;
*(u32*)&DTCM[addr & (DTCMPhysicalSize - 1)] = val;
return;
}
@ -953,10 +958,10 @@ void ARMv5::DataWrite32S(u32 addr, u32 val)
#endif
return;
}
if (addr >= DTCMBase && addr < (DTCMBase + DTCMSize))
if ((addr & DTCMMask) == DTCMBase)
{
DataCycles += 1;
*(u32*)&DTCM[(addr - DTCMBase) & (DTCMPhysicalSize - 1)] = val;
*(u32*)&DTCM[addr & (DTCMPhysicalSize - 1)] = val;
return;
}