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melonDS
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Merge branch 'less-ambitious-timing-rework' into chemical-x

This commit is contained in:
Jaklyy 2024-10-21 12:31:54 -04:00
parent 744f5c9fcd af09e37d53
commit e93381dfa4
1 changed files with 27 additions and 13 deletions
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40
src/CP15.cpp
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@ -1903,11 +1903,20 @@ u32 ARMv5::CodeRead32(u32 addr, bool branch)
if ((addr >> 24) == 0x02)
{
if (NDS.ARM9Timestamp < MainRAMTimestamp) NDS.ARM9Timestamp = MainRAMTimestamp + ((1<<NDS.ARM9ClockShift)-1) & ~((1<<NDS.ARM9ClockShift)-1);
NDS.ARM9Timestamp += CodeCycles;
if (NDS.ARM9ClockShift == 2)
{
MainRAMTimestamp = NDS.ARM9Timestamp;
NDS.ARM9Timestamp -= 4;
}
}
else
{
if (NDS.ARM9Regions[addr>>14] == DataRegion && Store) NDS.ARM9Timestamp += (1<<NDS.ARM9ClockShift);
NDS.ARM9Timestamp += CodeCycles;
}
else if (NDS.ARM9Regions[addr>>14] == DataRegion && Store) NDS.ARM9Timestamp += (1<<NDS.ARM9ClockShift);
Store = false;
NDS.ARM9Timestamp += CodeCycles;
if (NDS.ARM9Timestamp < TimestampActual) NDS.ARM9Timestamp = TimestampActual;
DataRegion = Mem9_Null;
@ -1967,6 +1976,7 @@ bool ARMv5::DataRead8(u32 addr, u32* val)
{
if (NDS.ARM9Timestamp < MainRAMTimestamp) NDS.ARM9Timestamp = MainRAMTimestamp;
MainRAMTimestamp = NDS.ARM9Timestamp + DataCycles;
if (NDS.ARM9ClockShift == 2) DataCycles -= 4;
DataRegion = Mem9_MainRAM;
}
else DataRegion = NDS.ARM9Regions[addr>>14];
@ -2028,6 +2038,7 @@ bool ARMv5::DataRead16(u32 addr, u32* val)
{
if (NDS.ARM9Timestamp < MainRAMTimestamp) NDS.ARM9Timestamp = MainRAMTimestamp;
MainRAMTimestamp = NDS.ARM9Timestamp + DataCycles;
if (NDS.ARM9ClockShift == 2) DataCycles -= 4;
DataRegion = Mem9_MainRAM;
}
else DataRegion = NDS.ARM9Regions[addr>>14];
@ -2089,6 +2100,7 @@ bool ARMv5::DataRead32(u32 addr, u32* val)
{
if (NDS.ARM9Timestamp < MainRAMTimestamp) NDS.ARM9Timestamp = MainRAMTimestamp;
MainRAMTimestamp = NDS.ARM9Timestamp + DataCycles;
if (NDS.ARM9ClockShift == 2) DataCycles -= 4;
DataRegion = Mem9_MainRAM;
}
else DataRegion = NDS.ARM9Regions[addr>>14];
@ -2147,15 +2159,16 @@ bool ARMv5::DataRead32S(u32 addr, u32* val)
NDS.ARM9Timestamp += DataCycles;
// bursts cannot cross a 1kb boundary
if (addr & 0x3FF) DataCycles = MemTimings[addr >> 12][2]; //s
else DataCycles = MemTimings[addr >> 12][1]; // ns
NDS.ARM9Timestamp = NDS.ARM9Timestamp + ((1<<NDS.ARM9ClockShift)-1) & ~((1<<NDS.ARM9ClockShift)-1);
if (addr & 0x3FF) DataCycles = MemTimings[addr >> 12][3]; //s
else DataCycles = MemTimings[addr >> 12][2]; // ns
DataCycles += (((NDS.ARM9Timestamp + DataCycles) + ((1<<NDS.ARM9ClockShift)-1) & ~((1<<NDS.ARM9ClockShift)-1))) - (NDS.ARM9Timestamp + DataCycles);
if ((addr >> 24) == 0x02)
{
if (NDS.ARM9Timestamp < MainRAMTimestamp) NDS.ARM9Timestamp = MainRAMTimestamp;
if ((NDS.ARM9Timestamp + DataCycles) < MainRAMTimestamp) DataCycles = MainRAMTimestamp - NDS.ARM9Timestamp;
MainRAMTimestamp = NDS.ARM9Timestamp + DataCycles;
if (NDS.ARM9ClockShift == 2) DataCycles -= 4;
DataRegion = Mem9_MainRAM;
}
else DataRegion = NDS.ARM9Regions[addr>>14];
@ -2217,7 +2230,7 @@ bool ARMv5::DataWrite8(u32 addr, u8 val)
if (NDS.ARM9Timestamp < MainRAMTimestamp) NDS.ARM9Timestamp = MainRAMTimestamp;
DataRegion = Mem9_MainRAM;
MainRAMTimestamp = NDS.ARM9Timestamp + DataCycles;
DataCycles -= (3<<NDS.ARM9ClockShift);
DataCycles -= (2<<NDS.ARM9ClockShift);
}
else DataRegion = NDS.ARM9Regions[addr>>14];
@ -2296,7 +2309,7 @@ bool ARMv5::DataWrite16(u32 addr, u16 val)
if (NDS.ARM9Timestamp < MainRAMTimestamp) NDS.ARM9Timestamp = MainRAMTimestamp;
DataRegion = Mem9_MainRAM;
MainRAMTimestamp = NDS.ARM9Timestamp + DataCycles;
DataCycles -= (3<<NDS.ARM9ClockShift);
DataCycles -= (2<<NDS.ARM9ClockShift);
}
else DataRegion = NDS.ARM9Regions[addr>>14];
@ -2376,7 +2389,7 @@ bool ARMv5::DataWrite32(u32 addr, u32 val)
if (NDS.ARM9Timestamp < MainRAMTimestamp) NDS.ARM9Timestamp = MainRAMTimestamp;
DataRegion = Mem9_MainRAM;
MainRAMTimestamp = NDS.ARM9Timestamp + DataCycles;
DataCycles -= (3<<NDS.ARM9ClockShift);
DataCycles -= (2<<NDS.ARM9ClockShift);
}
else DataRegion = NDS.ARM9Regions[addr>>14];
@ -2455,8 +2468,9 @@ bool ARMv5::DataWrite32S(u32 addr, u32 val)
if ((addr >> 24) == 0x02)
{
//if ((DataRegion != Mem9_MainRAM) && ((NDS.ARM9Timestamp + DataCycles) < MainRAMTimestamp)) DataCycles += MainRAMTimestamp - NDS.ARM9Timestamp; // what the hell was i smoking here?
MainRAMTimestamp = NDS.ARM9Timestamp + DataCycles + (2 << NDS.ARM9ClockShift);
if ((NDS.ARM9Timestamp + DataCycles) < MainRAMTimestamp) DataCycles = MainRAMTimestamp - NDS.ARM9Timestamp;
MainRAMTimestamp = NDS.ARM9Timestamp + DataCycles;
DataCycles -= 3 << NDS.ARM9ClockShift; // checkme: are sequentials actually - 3?
DataRegion = Mem9_MainRAM;
}
else DataRegion = NDS.ARM9Regions[addr>>14];
@ -2474,7 +2488,7 @@ bool ARMv5::DataWrite32S(u32 addr, u32 val)
if ((addr >> 24) == 0x02)
{
cycles = (cycles - 2) | 0x80;
cycles = (cycles - 3) | 0x80;
}
WriteBufferWrite(val, 2, cycles, addr);