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finish the work on the main loop. finally fix all cases of desync I could find. also add #ifdef'd debug code to check for desyncs.

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This commit is contained in:
StapleButter
2018-12-11 15:56:34 +01:00
parent 78d384a754
commit 3dd8c7b152
5 changed files with 133 additions and 53 deletions
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32
src/DMA.cpp
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@ -170,8 +170,8 @@ void DMA::Start()
if ((Cnt & 0x00600000) == 0x00600000)
CurDstAddr = DstAddr;
if(CPU==0&&StartMode!=7&&false)
printf("ARM%d DMA%d %08X %02X %08X->%08X %d bytes %dbit\n", CPU?7:9, Num, Cnt, StartMode, CurSrcAddr, CurDstAddr, RemCount*((Cnt&0x04000000)?4:2), (Cnt&0x04000000)?32:16);
//printf("ARM%d DMA%d %08X %02X %08X->%08X %d bytes %dbit\n", CPU?7:9, Num, Cnt, StartMode, CurSrcAddr, CurDstAddr, RemCount*((Cnt&0x04000000)?4:2), (Cnt&0x04000000)?32:16);
IsGXFIFODMA = (CPU == 0 && (CurSrcAddr>>24) == 0x02 && CurDstAddr == 0x04000400 && DstAddrInc == 0);
@ -185,12 +185,16 @@ if(CPU==0&&StartMode!=7&&false)
InProgress = true;
NDS::StopCPU(CPU, 1<<Num);
}
extern u64 arm9total, arm7total;
s32 DMA::Run(s32 cycles)
{
if (!Running)
return cycles;
s32 startc = cycles;
#ifdef DEBUG_CHECK_DESYNC
s32 startc = cycles;
#endif // DEBUG_CHECK_DESYNC
Executing = true;
// add NS penalty for first accesses in burst
@ -257,7 +261,7 @@ s32 startc = cycles;
cycles -= unitcycles;
NDS::RunTightTimers(CPU, lastcycles-cycles);
//if(CPU){arm7timer+=(lastcycles-cycles);}else{arm9timer+=(lastcycles-cycles);}
lastcycles = cycles;
writefn(CurDstAddr, readfn(CurSrcAddr));
@ -325,7 +329,7 @@ s32 startc = cycles;
cycles -= unitcycles;
NDS::RunTightTimers(CPU, lastcycles-cycles);
//if(CPU){arm7timer+=(lastcycles-cycles);}else{arm9timer+=(lastcycles-cycles);}
lastcycles = cycles;
writefn(CurDstAddr, readfn(CurSrcAddr));
@ -341,7 +345,7 @@ s32 startc = cycles;
Executing = false;
Stall = false;
//if (CPU) printf("ran DMA for %d cycles (asked %d)\n", startc-cycles, startc);
if (RemCount)
{
if (IterCount == 0)
@ -352,7 +356,12 @@ s32 startc = cycles;
if (StartMode == 0x07)
GPU3D::CheckFIFODMA();
}
if(CPU){arm7total+=(startc-cycles);}else{arm9total+=(startc-cycles);}
#ifdef DEBUG_CHECK_DESYNC
if (CPU) NDS::dbg_CyclesARM7 += (startc-cycles);
else NDS::dbg_CyclesARM9 += (startc-cycles);
#endif // DEBUG_CHECK_DESYNC
return cycles;
}
@ -365,6 +374,11 @@ if(CPU){arm7total+=(startc-cycles);}else{arm9total+=(startc-cycles);}
Running = 0;
InProgress = false;
NDS::ResumeCPU(CPU, 1<<Num);
if(CPU){arm7total+=(startc-(cycles));}else{arm9total+=(startc-(cycles));}
#ifdef DEBUG_CHECK_DESYNC
if (CPU) NDS::dbg_CyclesARM7 += (startc-cycles);
else NDS::dbg_CyclesARM9 += (startc-cycles);
#endif // DEBUG_CHECK_DESYNC
return cycles;
}