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fix some shit. add support for SPI and firmware.

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This commit is contained in:
StapleButter
2016-12-04 03:20:50 +01:00
parent d7c1d77ba2
commit a14c01208a
7 changed files with 328 additions and 7 deletions
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18
ARM.cpp
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@ -73,6 +73,8 @@ void ARM::JumpTo(u32 addr)
void ARM::RestoreCPSR()
{
u32 oldcpsr = CPSR;
switch (CPSR & 0x1F)
{
case 0x11:
@ -99,6 +101,8 @@ void ARM::RestoreCPSR()
printf("!! attempt to restore CPSR under bad mode %02X\n", CPSR&0x1F);
break;
}
UpdateMode(oldcpsr, CPSR);
}
void ARM::UpdateMode(u32 oldmode, u32 newmode)
@ -177,6 +181,20 @@ void ARM::UpdateMode(u32 oldmode, u32 newmode)
#undef SWAP
}
void ARM::TriggerIRQ()
{
if (CPSR & 0x80) return;
u32 oldcpsr = CPSR;
CPSR &= ~0xFF;
CPSR |= 0xD2;
UpdateMode(oldcpsr, CPSR);
R_IRQ[2] = oldcpsr;
R[14] = R[15];// - (oldcpsr & 0x20 ? 0 : 4);
JumpTo(ExceptionBase + 0x18);
}
s32 ARM::Execute(s32 cycles)
{
while (cycles > 0)