ShuriZma
/
dolphin
mirror of https://github.com/dolphin-emu/dolphin.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

revert this for now, i need to read more 

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2739 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Shawn Hoffman 2009-03-23 08:49:17 +00:00
parent 32b983ef83
commit fc582ea560
1 changed files with 241 additions and 259 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

128
Source/Core/Core/Src/PowerPC/PowerPC.cpp
View File

@ -213,12 +213,62 @@ void CheckExceptions()
// gcemu uses the mask 0x87C0FFFF instead of 0x0780FF77 // gcemu uses the mask 0x87C0FFFF instead of 0x0780FF77
// Investigate! // Investigate!
// EXTERNAL INTTERUPT if (ppcState.Exceptions & EXCEPTION_FPU_UNAVAILABLE)
if (MSR & 0x0008000) {
//This happens a lot - Gamecube OS uses deferred FPU context switching
SRR0 = PC; // re-execute the instruction
SRR1 = MSR & 0x0780FF77;
NPC = 0x80000800;
INFO_LOG(GEKKO, "EXCEPTION_FPU_UNAVAILABLE");
ppcState.Exceptions &= ~EXCEPTION_FPU_UNAVAILABLE;
SRR1 |= 0x02; //recoverable
}
else if (ppcState.Exceptions & EXCEPTION_SYSCALL)
{
SRR0 = NPC; // execute next instruction when we come back from handler
SRR1 = MSR & 0x0780FF77;
NPC = 0x80000C00;
INFO_LOG(GEKKO, "EXCEPTION_SYSCALL (PC=%08x)", PC);
ppcState.Exceptions &= ~EXCEPTION_SYSCALL;
SRR1 |= 0x02; //recoverable
}
else if (ppcState.Exceptions & EXCEPTION_DSI)
{
SRR0 = PC; // re-execute the instruction
SRR1 = MSR & 0x0780FF77;
NPC = 0x80000300;
INFO_LOG(GEKKO, "EXCEPTION_DSI");
ppcState.Exceptions &= ~EXCEPTION_DSI;
//SRR1 |= 0x02; //make recoverable ?
}
else if (ppcState.Exceptions & EXCEPTION_ISI)
{
SRR0 = PC;
SRR1 = (MSR & 0x0780FF77) | 0x40000000;
NPC = 0x80000400;
INFO_LOG(GEKKO, "EXCEPTION_ISI");
ppcState.Exceptions &= ~EXCEPTION_ISI;
//SRR1 |= 0x02; //make recoverable ?
}
else if (ppcState.Exceptions & EXCEPTION_ALIGNMENT)
{
//This never happens ATM
SRR0 = NPC;
SRR1 = MSR & 0x0780FF77;
NPC = 0x80000600;
INFO_LOG(GEKKO, "EXCEPTION_ALIGNMENT");
ppcState.Exceptions &= ~EXCEPTION_ALIGNMENT;
//SRR1 |= 0x02; //make recoverable ?
}
// EXTERNAL INTTERUPT
else if (MSR & 0x0008000)
{ {
// EXCEPTION_SYSRESET (hard)
// EXCEPTION_MACHINE_CHECK
// EXCEPTION_SYSRESET (soft)
if (ppcState.Exceptions & EXCEPTION_EXTERNAL_INT) if (ppcState.Exceptions & EXCEPTION_EXTERNAL_INT)
{ {
// Pokemon gets this "too early", it hasn't a handler yet // Pokemon gets this "too early", it hasn't a handler yet
@ -233,7 +283,6 @@ void CheckExceptions()
SRR1 |= 0x02; //set it to recoverable SRR1 |= 0x02; //set it to recoverable
_dbg_assert_msg_(GEKKO, (SRR1 & 0x02) != 0, "GEKKO", "EXTERNAL_INT unrecoverable???"); // unrecoverable exception !?! _dbg_assert_msg_(GEKKO, (SRR1 & 0x02) != 0, "GEKKO", "EXTERNAL_INT unrecoverable???"); // unrecoverable exception !?!
} }
// EXCEPTION_PERF_MONITOR
else if (ppcState.Exceptions & EXCEPTION_DECREMENTER) else if (ppcState.Exceptions & EXCEPTION_DECREMENTER)
{ {
SRR0 = NPC; SRR0 = NPC;
@ -251,73 +300,6 @@ void CheckExceptions()
ERROR_LOG(GEKKO, "Unknown EXTERNAL INTERRUPT exception: Exceptions == %08x", ppcState.Exceptions); ERROR_LOG(GEKKO, "Unknown EXTERNAL INTERRUPT exception: Exceptions == %08x", ppcState.Exceptions);
} }
} }
else if (ppcState.Exceptions & EXCEPTION_ISI)
{
SRR0 = PC;
SRR1 = (MSR & 0x0780FF77) | 0x40000000;
NPC = 0x80000400;
INFO_LOG(GEKKO, "EXCEPTION_ISI");
ppcState.Exceptions &= ~EXCEPTION_ISI;
//SRR1 |= 0x02; //make recoverable ?
}
// EXCEPTION_ADDR_BREAKPOINT
else if (ppcState.Exceptions & EXCEPTION_PROGRAM)
{
SRR0 = NPC; // execute next instruction when we come back from handler
SRR1 = MSR & 0x0780FF77;
NPC = 0x80000700;
INFO_LOG(GEKKO, "EXCEPTION_PROGRAM (PC=%08x)", PC);
ppcState.Exceptions &= ~EXCEPTION_PROGRAM;
SRR1 |= 0x02; //recoverable
}
else if (ppcState.Exceptions & EXCEPTION_SYSCALL)
{
SRR0 = NPC; // execute next instruction when we come back from handler
SRR1 = MSR & 0x0780FF77;
NPC = 0x80000C00;
INFO_LOG(GEKKO, "EXCEPTION_SYSCALL (PC=%08x)", PC);
ppcState.Exceptions &= ~EXCEPTION_SYSCALL;
SRR1 |= 0x02; //recoverable
}
else if (ppcState.Exceptions & EXCEPTION_FPU_UNAVAILABLE)
{
//This happens a lot - Gamecube OS uses deferred FPU context switching
SRR0 = PC; // re-execute the instruction
SRR1 = MSR & 0x0780FF77;
NPC = 0x80000800;
INFO_LOG(GEKKO, "EXCEPTION_FPU_UNAVAILABLE");
ppcState.Exceptions &= ~EXCEPTION_FPU_UNAVAILABLE;
SRR1 |= 0x02; //recoverable
}
// EXCEPTION_PROGRAM (floating point)
else if (ppcState.Exceptions & EXCEPTION_DSI)
{
SRR0 = PC; // re-execute the instruction
SRR1 = MSR & 0x0780FF77;
NPC = 0x80000300;
INFO_LOG(GEKKO, "EXCEPTION_DSI");
ppcState.Exceptions &= ~EXCEPTION_DSI;
//SRR1 |= 0x02; //make recoverable ?
}
else if (ppcState.Exceptions & EXCEPTION_ALIGNMENT)
{
// Alignment exceptions have priorities
//This never happens ATM
SRR0 = NPC;
SRR1 = MSR & 0x0780FF77;
NPC = 0x80000600;
INFO_LOG(GEKKO, "EXCEPTION_ALIGNMENT");
ppcState.Exceptions &= ~EXCEPTION_ALIGNMENT;
//SRR1 |= 0x02; //make recoverable ?
}
// Other DSI exceptions
// EXCEPTION_TRACE
MSR &= ~0x0008000; // clear EE-bit so interrupts aren't possible anymore MSR &= ~0x0008000; // clear EE-bit so interrupts aren't possible anymore
} }