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r15 mrc mrs

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This commit is contained in:
Jaklyy 2024-09-16 17:50:09 -04:00
parent e2f3dd1e6f
commit e5654ec541
1 changed files with 10 additions and 4 deletions
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14
src/ARMInterpreter.cpp
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@ -201,7 +201,12 @@ void A_MRS(ARM* cpu)
else
psr = cpu->CPSR;
cpu->R[(cpu->CurInstr>>12) & 0xF] = psr;
if (((cpu->CurInstr>>12) & 0xF) == 15)
{
if (cpu->Num == 1) // doesn't seem to jump on the arm9? checkme
cpu->JumpTo(psr & ~0x1); // checkme: this shouldn't be able to switch to thumb?
}
else cpu->R[(cpu->CurInstr>>12) & 0xF] = psr;
if (cpu->Num != 1) cpu->AddCycles_CI(1); // arm9
else cpu->AddCycles_C(); // arm7
@ -248,12 +253,13 @@ void A_MRC(ARM* cpu)
u32 cn = (cpu->CurInstr >> 16) & 0xF;
u32 cm = cpu->CurInstr & 0xF;
u32 cpinfo = (cpu->CurInstr >> 5) & 0x7;
u32 rd = (cpu->CurInstr>>12) & 0xF;
if (cpu->Num==0 && cp==15)
if (cpu->Num==0 && cp==15 && rd!=15)
{
cpu->R[(cpu->CurInstr>>12)&0xF] = ((ARMv5*)cpu)->CP15Read((cn<<8)|(cm<<4)|cpinfo);
cpu->R[rd] = ((ARMv5*)cpu)->CP15Read((cn<<8)|(cm<<4)|cpinfo);
}
else if (cpu->Num==1 && cp==14)
else if (cpu->Num==1 && cp==14 && rd!=15)
{
Log(LogLevel::Debug, "MRC p14,%d,%d,%d on ARM7\n", cn, cm, cpinfo);
}