ShuriZma
/
melonDS
mirror of https://github.com/melonDS-emu/melonDS.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

this fixes stuff

This commit is contained in:
Jaklyy 2024-11-04 09:23:58 -05:00
parent 09cdec70a6
commit 604b21c85a
1 changed files with 27 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
src/CP15.cpp
View File

@ -535,7 +535,9 @@ u32 ARMv5::ICacheLookup(const u32 addr)
{
if (NDS.ARM9Timestamp < MainRAMTimestamp) NDS.ARM9Timestamp = MainRAMTimestamp + ((1<<NDS.ARM9ClockShift)-1) & ~((1<<NDS.ARM9ClockShift)-1);
}
else if (NDS.ARM9Regions[addr>>14] == DataRegion && Store) NDS.ARM9Timestamp += (1<<NDS.ARM9ClockShift);
else if (((NDS.ARM9Timestamp <= WBReleaseTS) && (NDS.ARM9Regions[addr>>14] == WBLastRegion)) // check write buffer
|| (Store && (NDS.ARM9Regions[addr>>14] == DataRegion))) //check the actual store
NDS.ARM9Timestamp += 1<<NDS.ARM9ClockShift;
Store = false;
// Disabled ICACHE Streaming:
@ -555,10 +557,6 @@ u32 ARMv5::ICacheLookup(const u32 addr)
u32 cycles = ns + (seq * linepos);
NDS.ARM9Timestamp = cycles += NDS.ARM9Timestamp;
if (((NDS.ARM9Timestamp <= WBReleaseTS) && (NDS.ARM9Regions[addr>>14] == WBLastRegion)) // check write buffer
|| (Store && (NDS.ARM9Regions[addr>>14] == DataRegion))) //check the actual store
NDS.ARM9Timestamp += 1<<NDS.ARM9ClockShift;
if (NDS.ARM9Timestamp < TimestampActual) NDS.ARM9Timestamp = TimestampActual;
ICacheFillPtr = linepos;
@ -1178,6 +1176,7 @@ inline bool ARMv5::WriteBufferHandle()
if (WBWriting)
{
// look up timings
// TODO: handle interrupted bursts?
u32 cycles;
switch (WBCurVal >> 61)
{
@ -1217,12 +1216,12 @@ inline bool ARMv5::WriteBufferHandle()
// get the current timestamp
u64 ts;
if (NDS.ARM9Regions[WBCurAddr>>14] == Mem9_MainRAM)
if (((WBCurVal >> 61) != 3) && (NDS.ARM9Regions[WBCurAddr>>14] == Mem9_MainRAM))
ts = std::max(WBTimestamp, MainRAMTimestamp);
else
ts = WBTimestamp;
ts = (ts + ((1<<NDS.ARM9ClockShift)-1)) & ~((1<<NDS.ARM9ClockShift)-1);
if ((WBCurVal >> 61) != 3) ts = (ts + ((1<<NDS.ARM9ClockShift)-1)) & ~((1<<NDS.ARM9ClockShift)-1);
ts += cycles;
@ -1240,8 +1239,8 @@ inline bool ARMv5::WriteBufferHandle()
}
else
{
WBReleaseTS = WBTimestamp = ts;
if (NDS.ARM9Regions[WBCurAddr>>14] == Mem9_MainRAM) MainRAMTimestamp = ts;
WBTimestamp = ts;
if (NDS.ARM9Regions[WBCurAddr>>14] == Mem9_MainRAM) MainRAMTimestamp += 2 << NDS.ARM9ClockShift;
}
switch (WBCurVal >> 61)
@ -1264,7 +1263,7 @@ inline bool ARMv5::WriteBufferHandle()
WBLastRegion = NDS.ARM9Regions[WBCurAddr>>14];
//printf("writing: adr: %i, val: %lli, cyl: %i", WBCurAddr, WBCurVal, WBCurCycles);
WBWriting = false;
if constexpr (force == 2) return true;
if ((force == 2) && ((WriteBufferFifo[WBWritePointer] >> 61) != 3)) return true;
}
// check if write buffer is empty
@ -1304,7 +1303,7 @@ void ARMv5::WriteBufferCheck()
if constexpr (next == 1) // check if the next write is occuring
{
if (NDS.ARM9Timestamp >= WBTimestamp)
if (WBWriting)
{
while(!WriteBufferHandle<2>());
}
@ -1328,7 +1327,7 @@ void ARMv5::WriteBufferWrite(u32 val, u8 flag, u32 addr)
else if (WBWritePointer == 16) // indicates empty write buffer
{
WBWritePointer = 0;
if (WBTimestamp < (NDS.ARM9Timestamp + 1)) WBTimestamp = (NDS.ARM9Timestamp + 1 + ((1<<NDS.ARM9ClockShift)-1)) & ~((1<<NDS.ARM9ClockShift)-1);
if (!WBWriting && (WBTimestamp < (NDS.ARM9Timestamp+1))) WBTimestamp = (NDS.ARM9Timestamp+1);
}
WriteBufferFifo[WBFillPointer] = val | (u64)flag << 61;
@ -2129,6 +2128,7 @@ u32 ARMv5::CodeRead32(u32 addr, bool branch)
if (NDS.ARM9Timestamp < TimestampActual) NDS.ARM9Timestamp = TimestampActual;
WBTimestamp = NDS.ARM9Timestamp;
DataRegion = Mem9_Null;
return BusRead32(addr);
}
@ -2211,6 +2211,7 @@ bool ARMv5::DataRead8(u32 addr, u32* val)
NDS.ARM9Timestamp += 1<<NDS.ARM9ClockShift;
}
WBTimestamp = NDS.ARM9Timestamp;
*val = BusRead8(addr);
return true;
}
@ -2294,6 +2295,7 @@ bool ARMv5::DataRead16(u32 addr, u32* val)
NDS.ARM9Timestamp += 1<<NDS.ARM9ClockShift;
}
WBTimestamp = NDS.ARM9Timestamp;
*val = BusRead16(addr);
return true;
}
@ -2376,7 +2378,8 @@ bool ARMv5::DataRead32(u32 addr, u32* val)
if ((NDS.ARM9Timestamp <= WBReleaseTS) && (DataRegion == WBLastRegion)) // check write buffer
NDS.ARM9Timestamp += 1<<NDS.ARM9ClockShift;
}
WBTimestamp = NDS.ARM9Timestamp;
*val = BusRead32(addr);
return true;
}
@ -2475,7 +2478,8 @@ bool ARMv5::DataRead32S(u32 addr, u32* val)
NDS.ARM9Timestamp += 1<<NDS.ARM9ClockShift;
}
}
WBTimestamp = NDS.ARM9Timestamp;
*val = BusRead32(addr);
return true;
}
@ -2554,6 +2558,7 @@ bool ARMv5::DataWrite8(u32 addr, u8 val)
}
else DataRegion = NDS.ARM9Regions[addr>>14];
WBTimestamp = NDS.ARM9Timestamp;
BusWrite8(addr, val);
}
else
@ -2562,6 +2567,7 @@ bool ARMv5::DataWrite8(u32 addr, u8 val)
WriteBufferWrite(addr, 4);
WriteBufferWrite(val, 0, addr);
DataRegion = Mem9_Null;
DataCycles = 1;
WBDelay = NDS.ARM9Timestamp + 2;
}
@ -2644,6 +2650,7 @@ bool ARMv5::DataWrite16(u32 addr, u16 val)
}
else DataRegion = NDS.ARM9Regions[addr>>14];
WBTimestamp = NDS.ARM9Timestamp;
BusWrite16(addr, val);
}
else
@ -2652,6 +2659,7 @@ bool ARMv5::DataWrite16(u32 addr, u16 val)
WriteBufferWrite(addr, 4);
WriteBufferWrite(val, 1, addr);
DataRegion = Mem9_Null;
DataCycles = 1;
WBDelay = NDS.ARM9Timestamp + 2;
}
@ -2733,7 +2741,8 @@ bool ARMv5::DataWrite32(u32 addr, u32 val)
DataCycles -= 2<<NDS.ARM9ClockShift;
}
else DataRegion = NDS.ARM9Regions[addr>>14];
WBTimestamp = NDS.ARM9Timestamp;
BusWrite32(addr, val);
}
else
@ -2742,6 +2751,7 @@ bool ARMv5::DataWrite32(u32 addr, u32 val)
WriteBufferWrite(addr, 4);
WriteBufferWrite(val, 2, addr);
DataRegion = Mem9_Null;
DataCycles = 1;
WBDelay = NDS.ARM9Timestamp + 2;
}
@ -2839,11 +2849,13 @@ bool ARMv5::DataWrite32S(u32 addr, u32 val)
else DataRegion = NDS.ARM9Regions[addr>>14];
}
WBTimestamp = NDS.ARM9Timestamp;
BusWrite32(addr, val);
}
else
{
WriteBufferWrite(val, 3, addr);
DataRegion = Mem9_Null;
DataCycles = 1;
WBDelay = NDS.ARM9Timestamp + 2;
}