Added comments for my previous VU0 sync fix, along with some other code cleanups.

git-svn-id: http://pcsx2-playground.googlecode.com/svn/trunk@444 a6443dda-0b58-4228-96e9-037be469359c

pcsx2/R5900.c

@@ -549,6 +549,11 @@ void cpuBranchTest()
 		// We're in a BranchTest.  All dynarec registers are flushed
 		// so there is no need to freeze registers here.
 		Cpu->ExecuteVU0Block();
+
+		// This might be needed to keep the EE and VU0 in sync.
+		// A better fix will require hefty changes to the VU recs. -_-
+		if(VU0.VI[REG_VPU_STAT].UL & 0x1)
+			cpuSetNextBranchDelta( 768 );
 	}
 
 	assert( !g_globalXMMSaved X86_32CODE(&& !g_globalMMXSaved) );

pcsx2/VU0micro.c

@@ -206,13 +206,16 @@ void vu0ExecMicro(u32 addr) {
 	VU0.VI[REG_VPU_STAT].UL|= 0x1;
 	VU0.VI[REG_VPU_STAT].UL&= ~0xAE;
 
-	cpuSetNextBranchDelta( 64 );
-
 	if (addr != -1) VU0.VI[REG_TPC].UL = addr;
 	_vuExecMicroDebug(VU0);
 	FreezeXMMRegs(1);
 	Cpu->ExecuteVU0Block();
 	FreezeXMMRegs(0);
+
+	// If the VU0 program didn't finish then we'll want to finish it up
+	// pretty soon.  This fixes vmhacks in some games (Naruto Ultimate Ninja 2)
+	if(VU0.VI[REG_VPU_STAT].UL & 0x1)
+		cpuSetNextBranchDelta( 128 );
 }
 
 void _vu0ExecUpper(VURegs* VU, u32 *ptr) {

pcsx2/VU1micro.c

@@ -146,12 +146,10 @@ void vu1ExecMicro(u32 addr)
 	if(VU0.VI[REG_VPU_STAT].UL & 0x100) {
 		SysPrintf("Previous Microprogram still running on VU1\n");
 
-		if( VU0.VI[REG_VPU_STAT].UL & 0x100 ) {
 		do {
 			Cpu->ExecuteVU1Block();
 		} while(VU0.VI[REG_VPU_STAT].UL & 0x100);
 	}
-	}
 	VUM_LOG("vu1ExecMicro %x\n", addr);
 	VUM_LOG("vu1ExecMicro %x (count=%d)\n", addr, count++);
 
@@ -161,7 +159,6 @@ void vu1ExecMicro(u32 addr)
 	if (addr != -1) VU1.VI[REG_TPC].UL = addr;
 	_vuExecMicroDebug(VU1);
 
-	
 	//do {
 	FreezeXMMRegs(1);
 		Cpu->ExecuteVU1Block();
@@ -169,6 +166,12 @@ void vu1ExecMicro(u32 addr)
 	//} while(VU0.VI[REG_VPU_STAT].UL & 0x100);
 	// rec can call vu1ExecMicro
 
+	// VU1 isn't handled by branch tests right now, so this isn't needed.
+	// although maybe it should be?  VU1 is updated in the intBranchTest, but not the
+	// recompiler one.  Why?  No clue. (air)
+
+	//if( VU1.VI[REG_VPU_STAT].UL & 0x1 )
+	//	cpuSetNextBranchDelta( 256 );
 }
 
 void _vu1ExecUpper(VURegs* VU, u32 *ptr) {

pcsx2/x86/iCOP2.c

@@ -55,17 +55,19 @@ _vuopinfo g_cop2info = {0, 0, 1, 1, 1, 0, 0};
 #define _Ftf_ ((cpuRegs.code >> 23) & 0x03)
 #define _Cc_ (cpuRegs.code & 0x03)
 
-#define REC_COP2_FUNC(f, delreg) \
+void recCop2BranchCall( void (*func)() )
+{
+	X86_32CODE(SetFPUstate());
+	recBranchCall( func );
+	_freeX86regs();
+}
+
+#define REC_COP2_FUNC( f ) \
 	void f(); \
-	void rec##f() { \
-	SysPrintf("cop2 "#f" called\n"); \
-	X86_32CODE(SetFPUstate()); \
-	MOV32ItoM((uptr)&cpuRegs.code, cpuRegs.code); \
-	MOV32ItoM((uptr)&cpuRegs.pc, pc); \
-	iFlushCall(FLUSH_NOCONST); \
-	CALLFunc((uptr)f); \
-	_freeX86regs(); \
-	branch = 2; \
+	void rec##f() \
+	{ \
+		SysPrintf("Warning > cop2 "#f" called\n"); \
+		recCop2BranchCall( f ); \
 	}
 
 #define INTERPRETATE_COP2_FUNC(f) \
@@ -250,9 +252,6 @@ static void recCFC2()
 
 static void recCTC2()
 {
-#ifdef __x86_64__
-	int mmreg;
-#endif
 	if (cpuRegs.code & 1) {
 		#ifdef __x86_64__
 		iFlushCall(FLUSH_FREE_VU0|FLUSH_FREE_TEMPX86);
@@ -289,51 +288,39 @@ static void recCTC2()
 				
 				assert( _checkX86reg(X86TYPE_VI, REG_VPU_STAT, 0) < 0 &&
 					    _checkX86reg(X86TYPE_VI, REG_TPC, 0) < 0 );
-				
-				// Execute VU1 Micro SubRoutine
-				_callFunctionArg1((uptr)FreezeXMMRegs_, MEM_CONSTTAG, 1);
-				_callFunctionArg1((uptr)vu1ExecMicro, MEM_CONSTTAG, g_cpuConstRegs[_Rt_].UL[0]&0xffff);
-				_callFunctionArg1((uptr)FreezeXMMRegs_, MEM_CONSTTAG, 0);
 #else
 				iFlushCall(FLUSH_NOCONST);// since CALLFunc
-				
 				assert( _checkX86reg(X86TYPE_VI, REG_VPU_STAT, 0) < 0 &&
 					    _checkX86reg(X86TYPE_VI, REG_TPC, 0) < 0 );
-				
+#endif
 				// Execute VU1 Micro SubRoutine
 				_callFunctionArg1((uptr)vu1ExecMicro, MEM_CONSTTAG, g_cpuConstRegs[_Rt_].UL[0]&0xffff);
-#endif
 				break;
 			default:
+			{
 				if( _Fs_ < 16 )
 					assert( (g_cpuConstRegs[_Rt_].UL[0]&0xffff0000)==0);
-#ifdef __x86_64__
-				mmreg = _checkX86reg(X86TYPE_VI, _Fs_, MODE_WRITE);
-				
-				if( mmreg >= 0 ) MOV32ItoR(mmreg, g_cpuConstRegs[_Rt_].UL[0]);
 
 				// a lot of games have vu0 spinning on some integer
 				// then they modify the register and expect vu0 to stop spinning within 10 cycles (donald duck)
-				iFlushCall(FLUSH_FREE_TEMPX86|FLUSH_FREE_VU0);
 
-				_callFunctionArg1((uptr)FreezeXMMRegs_, MEM_CONSTTAG, 1);
-				CALLFunc((uptr)Cpu->ExecuteVU0Block);
-				_callFunctionArg1((uptr)FreezeXMMRegs_, MEM_CONSTTAG, 0);
+#ifdef __x86_64__
+				int mmreg = _checkX86reg(X86TYPE_VI, _Fs_, MODE_WRITE);
+				if( mmreg >= 0 ) MOV32ItoR(mmreg, g_cpuConstRegs[_Rt_].UL[0]);
+				iFlushCall(FLUSH_FREE_TEMPX86|FLUSH_FREE_VU0);
 #else
 				MOV32ItoM((uptr)&VU0.VI[_Fs_].UL,g_cpuConstRegs[_Rt_].UL[0]);
-				
-				// fixme: this code should issue a BranchTest instead of calling the VU0Block directly.
-				// It would be a lot safter and would get rid of the 64 bit mess above too.
-
-				// a lot of games have vu0 spinning on some integer
-				// then they modify the register and expect vu0 to stop spinning within 10 cycles (donald duck)
 				iFlushCall(FLUSH_NOCONST);
-				CALLFunc((uptr)Cpu->ExecuteVU0Block);
-				//SysPrintf( "Recompiler Warning > Unstable VU0 opcode used." );
 #endif
+				CALLFunc((uptr)Cpu->ExecuteVU0Block);
+
+				// fixme: if the VU0 stat&1 is still enabled, then we should probably set a cpuBranchTest
+				// for 128 cycles from now.  It would be the safest thing to do to make sure the VU0
+				// responds in a timely matter to the game's register write.
 				break;
 			}
 		}
+	}
 	else 
 	{
 		switch(_Fs_) {
@@ -613,10 +600,10 @@ void _cop2AnalyzeOp(EEINST* pinst, int dostalls)
 //////////////////////////////////////////////////////////////////////////
 //    BC2: Instructions 
 //////////////////////////////////////////////////////////////////////////
-REC_COP2_FUNC(BC2F, 0);
-REC_COP2_FUNC(BC2T, 0);
-REC_COP2_FUNC(BC2FL, 0);
-REC_COP2_FUNC(BC2TL, 0);
+REC_COP2_FUNC(BC2F);
+REC_COP2_FUNC(BC2T);
+REC_COP2_FUNC(BC2FL);
+REC_COP2_FUNC(BC2TL);
 
 //////////////////////////////////////////////////////////////////////////
 //    Special1 instructions