piwalker/melonDS
1
0
Fork 0
mirror of https://github.com/melonDS-emu/melonDS.git synced 2025-07-25 07:10:00 -06:00
Code Issues Packages Projects Releases Wiki Activity

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.

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

37
src/ARM.cpp
View File

@ -147,7 +147,7 @@ void ARM::SetupCodeMem(u32 addr)
NDS::ARM7GetMemRegion(addr, false, &CodeMem);
}
}
namespace GPU{extern u16 VCount;}
void ARMv5::JumpTo(u32 addr, bool restorecpsr)
{
if (restorecpsr)
@ -162,8 +162,6 @@ void ARMv5::JumpTo(u32 addr, bool restorecpsr)
//if (addr == 0x0201764C) printf("capture test %d: R1=%08X\n", R[6], R[1]);
//if (addr == 0x020175D8) printf("capture test %d: res=%08X\n", R[6], R[0]);
// R0=DMA# R1=src R2=size
if (addr==0x1FFD9E0) printf("[%03d] FMVdec\n", GPU::VCount);
if (R[15]==0x1FFDF40) printf("[%03d] FMVdec FINISHED\n", GPU::VCount);
u32 oldregion = R[15] >> 24;
u32 newregion = addr >> 24;
@ -438,7 +436,7 @@ void ARMv5::DataAbort()
R[14] = R[15] + (oldcpsr & 0x20 ? 6 : 4);
JumpTo(ExceptionBase + 0x10);
}
extern u64 arm9total, arm7total, arm9timer, arm7timer;
s32 ARMv5::Execute()
{
if (Halted)
@ -451,12 +449,14 @@ s32 ARMv5::Execute()
{
Halted = 0;
if (NDS::IME[0] & 0x1)
TriggerIRQ(); //!! potential drift
TriggerIRQ();
}
else
{
Cycles = CyclesToRun;
arm9total+=(CyclesToRun>>1);//arm9timer+=(CyclesToRun>>1);
#ifdef DEBUG_CHECK_DESYNC
NDS::dbg_CyclesARM9 += (CyclesToRun >> ClockShift);
#endif // DEBUG_CHECK_DESYNC
//NDS::RunTightTimers(0, CyclesToRun >> ClockShift);
return Cycles;
}
@ -511,7 +511,7 @@ s32 ARMv5::Execute()
{
if (Halted == 1 && Cycles < CyclesToRun)
{
s32 diff = CyclesToRun - Cycles;
//s32 diff = CyclesToRun - Cycles;
Cycles = CyclesToRun;
//NDS::RunTightTimers(0, diff >> ClockShift);
//arm9timer += (diff>>1);
@ -528,13 +528,15 @@ s32 ARMv5::Execute()
if (Halted == 2)
Halted = 0;
if (Cycles > lastcycles)
/*if (Cycles > lastcycles)
{
//s32 diff = Cycles - lastcycles;arm9timer+=(diff>>1);
//NDS::RunTightTimers(0, diff >> ClockShift);
}
}*/
#ifdef DEBUG_CHECK_DESYNC
NDS::dbg_CyclesARM9 += (Cycles >> ClockShift);
#endif // DEBUG_CHECK_DESYNC
arm9total+=(Cycles>>1);
return Cycles;
}
@ -555,8 +557,10 @@ s32 ARMv4::Execute()
else
{
Cycles = CyclesToRun;
#ifdef DEBUG_CHECK_DESYNC
NDS::dbg_CyclesARM7 += CyclesToRun;
#endif // DEBUG_CHECK_DESYNC
//NDS::RunTightTimers(1, CyclesToRun);
arm7total+=CyclesToRun; //arm7timer+=CyclesToRun;
return Cycles;
}
}
@ -605,7 +609,7 @@ s32 ARMv4::Execute()
{
if (Halted == 1 && Cycles < CyclesToRun)
{
s32 diff = CyclesToRun - Cycles;
//s32 diff = CyclesToRun - Cycles;
Cycles = CyclesToRun;
//NDS::RunTightTimers(1, diff);
//arm7timer += diff;
@ -622,12 +626,15 @@ s32 ARMv4::Execute()
if (Halted == 2)
Halted = 0;
if (Cycles > lastcycles)
/*if (Cycles > lastcycles)
{
//s32 diff = Cycles - lastcycles;arm7timer+=(diff);
//NDS::RunTightTimers(1, diff);
}
}*/
#ifdef DEBUG_CHECK_DESYNC
NDS::dbg_CyclesARM7 += Cycles;
#endif // DEBUG_CHECK_DESYNC
arm7total+=Cycles;
return Cycles;
}