piwalker/melonDS
1
0
Fork 0
mirror of https://github.com/melonDS-emu/melonDS.git synced 2025-07-24 06:39:58 -06:00
Code Issues Packages Projects Releases Wiki Activity

more complete (and accurate) CP15 setup for direct boot

Browse Source
This commit is contained in:
Arisotura
2021-10-28 21:15:12 +02:00
parent bfe50e41b4
commit e121953c9a
5 changed files with 72 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
src/ARM.cpp
View File

@ -162,6 +162,8 @@ void ARMv5::Reset()
GetMemRegion = NDS::ARM9GetMemRegion;
}
//PU_Map = PU_PrivMap;
ARM::Reset();
}
@ -225,10 +227,22 @@ void ARM::DoSavestate(Savestate* file)
if (!file->Saving)
{
CPSR |= 0x00000010;
R_FIQ[7] |= 0x00000010;
R_SVC[2] |= 0x00000010;
R_ABT[2] |= 0x00000010;
R_IRQ[2] |= 0x00000010;
R_UND[2] |= 0x00000010;
if (!Num)
{
SetupCodeMem(R[15]); // should fix it
((ARMv5*)this)->RegionCodeCycles = ((ARMv5*)this)->MemTimings[R[15] >> 12][0];
/*if ((CPSR & 0x1F) == 0x10)
((ARMv5*)this)->PU_Map = ((ARMv5*)this)->PU_UserMap;
else
((ARMv5*)this)->PU_Map = ((ARMv5*)this)->PU_PrivMap;*/
}
else
{
@ -415,7 +429,7 @@ void ARM::RestoreCPSR()
UpdateMode(oldcpsr, CPSR);
}
void ARM::UpdateMode(u32 oldmode, u32 newmode)
void ARM::UpdateMode(u32 oldmode, u32 newmode, bool phony)
{
if ((oldmode & 0x1F) == (newmode & 0x1F)) return;
@ -485,13 +499,12 @@ void ARM::UpdateMode(u32 oldmode, u32 newmode)
break;
}
if (Num == 0)
if ((!phony) && (Num == 0))
{
/*if ((newmode & 0x1F) == 0x10)
((ARMv5*)this)->PU_Map = ((ARMv5*)this)->PU_UserMap;
else
((ARMv5*)this)->PU_Map = ((ARMv5*)this)->PU_PrivMap;*/
//if ((newmode & 0x1F) == 0x10) printf("!! USER MODE\n");
}
}