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

add the PU checks. bahahahah

Browse Source
This commit is contained in:
Arisotura
2021-10-29 00:36:55 +02:00
parent ead8d1b629
commit cca5615748
2 changed files with 51 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/ARM.cpp
View File

@ -335,12 +335,11 @@ void ARMv5::JumpTo(u32 addr, bool restorecpsr)
CPSR &= ~0x20;
}
/*if (!(PU_Map[addr>>12] & 0x04))
if (!(PU_Map[addr>>12] & 0x04))
{
printf("jumped to %08X. very bad\n", addr);
PrefetchAbort();
return;
}*/
}
NDS::MonitorARM9Jump(addr);
}
@ -535,7 +534,7 @@ void ARM::TriggerIRQ()
void ARMv5::PrefetchAbort()
{
printf("prefetch abort\n");
printf("ARM9: prefetch abort (%08X)\n", R[15]);
u32 oldcpsr = CPSR;
CPSR &= ~0xBF;
@ -546,7 +545,7 @@ void ARMv5::PrefetchAbort()
// so better take care of it
if (!(PU_Map[ExceptionBase>>12] & 0x04))
{
printf("!!!!! EXCEPTION REGION NOT READABLE. THIS IS VERY BAD!!\n");
printf("!!!!! EXCEPTION REGION NOT EXECUTABLE. THIS IS VERY BAD!!\n");
NDS::Stop();
return;
}
@ -558,7 +557,7 @@ void ARMv5::PrefetchAbort()
void ARMv5::DataAbort()
{
printf("data abort\n");
printf("ARM9: data abort (%08X)\n", R[15]);
u32 oldcpsr = CPSR;
CPSR &= ~0xBF;
@ -566,7 +565,7 @@ void ARMv5::DataAbort()
UpdateMode(oldcpsr, CPSR);
R_ABT[2] = oldcpsr;
R[14] = R[15] + (oldcpsr & 0x20 ? 6 : 4);
R[14] = R[15] + (oldcpsr & 0x20 ? 4 : 0);
JumpTo(ExceptionBase + 0x10);
}