Core: Update how exceptions are handled with the recompiler

Source/Project64-core/N64System/Interpreter/InterpreterOps.cpp

@@ -14,18 +14,6 @@
 #include <float.h>
 #include <math.h>
 
-#if (defined(_MSC_VER) && (_MSC_VER < 1800))
-double trunc(double num)
-{
-    return (num < 0) ? ceil(num) : floor(num);
-}
-
-float truncf(float num)
-{
-    return (num < 0) ? ceilf(num) : floorf(num);
-}
-#endif
-
 bool R4300iOp::m_TestTimer = false;
 R4300iOpcode R4300iOp::m_Opcode;
 

Source/Project64-core/N64System/Mips/Register.cpp

@@ -709,7 +709,6 @@ void CRegisters::TriggerException(uint32_t ExceptionCode, uint32_t Coprocessor)
     CAUSE_REGISTER.BranchDelay = m_System->m_PipelineStage == PIPELINE_STAGE_JUMP;
     EPC_REGISTER = (int64_t)((int32_t)m_PROGRAM_COUNTER - (CAUSE_REGISTER.BranchDelay ? 4 : 0));
     STATUS_REGISTER |= STATUS_EXL;
-    m_PROGRAM_COUNTER = 0x80000180;
     m_System->m_PipelineStage = PIPELINE_STAGE_JUMP;
-    m_System->m_JumpToLocation = (*_PROGRAM_COUNTER);
+    m_System->m_JumpToLocation = 0x80000180;
 }

Source/Project64-core/N64System/Mips/SystemEvents.cpp

@@ -114,7 +114,11 @@ void CSystemEvents::ExecuteEvents()
             m_System->Reset(true, true);
             break;
         case SysEvent_ExecuteInterrupt:
-            g_Reg->DoIntrException();
+            if (g_Reg->DoIntrException())
+            {
+                g_Reg->m_PROGRAM_COUNTER = m_System->JumpToLocation();
+                m_System->m_PipelineStage = PIPELINE_STAGE_NORMAL;
+            }
             break;
         case SysEvent_Interrupt_SP:
             g_Reg->MI_INTR_REG |= MI_INTR_SP;

Source/Project64-core/N64System/N64System.h

@@ -146,6 +146,7 @@ private:
     friend class CInterpreterCPU;
     friend class R4300iOp32;
     friend class R4300iOp;
+    friend class CSystemEvents;
 
     friend class VideoInterfaceHandler;
     friend class PifRamHandler;

Source/Project64-core/N64System/Recompiler/x86/x86RecompilerOps.cpp

@@ -9476,6 +9476,9 @@ void CX86RecompilerOps::CompileExit(uint32_t JumpPC, uint32_t TargetPC, CRegInfo
         m_Assembler.push(0);
         m_Assembler.PushImm32("EXC_SYSCALL", EXC_SYSCALL);
         m_Assembler.CallThis((uint32_t)g_Reg, AddressOf(&CRegisters::TriggerException), "CRegisters::TriggerException", 12);
+        m_Assembler.MoveVariableToX86reg(asmjit::x86::edx, &g_System->m_JumpToLocation, "System->m_JumpToLocation");
+        m_Assembler.MoveX86regToVariable(&g_Reg->m_PROGRAM_COUNTER, "PROGRAM_COUNTER", asmjit::x86::edx);
+        m_Assembler.MoveConstToVariable(&g_System->m_PipelineStage, "g_System->m_PipelineStage", PIPELINE_STAGE_NORMAL);
         ExitCodeBlock();
         break;
     case ExitReason_Break:
@@ -9483,6 +9486,9 @@ void CX86RecompilerOps::CompileExit(uint32_t JumpPC, uint32_t TargetPC, CRegInfo
         m_Assembler.push(0);
         m_Assembler.PushImm32("EXC_BREAK", EXC_BREAK);
         m_Assembler.CallThis((uint32_t)g_Reg, AddressOf(&CRegisters::TriggerException), "CRegisters::TriggerException", 12);
+        m_Assembler.MoveVariableToX86reg(asmjit::x86::edx, &g_System->m_JumpToLocation, "System->m_JumpToLocation");
+        m_Assembler.MoveX86regToVariable(&g_Reg->m_PROGRAM_COUNTER, "PROGRAM_COUNTER", asmjit::x86::edx);
+        m_Assembler.MoveConstToVariable(&g_System->m_PipelineStage, "g_System->m_PipelineStage", PIPELINE_STAGE_NORMAL);
         ExitCodeBlock();
         break;
     case ExitReason_COP1Unuseable:
@@ -9490,6 +9496,9 @@ void CX86RecompilerOps::CompileExit(uint32_t JumpPC, uint32_t TargetPC, CRegInfo
         m_Assembler.push(1);
         m_Assembler.PushImm32("EXC_CPU", EXC_CPU);
         m_Assembler.CallThis((uint32_t)g_Reg, AddressOf(&CRegisters::TriggerException), "CRegisters::TriggerException", 12);
+        m_Assembler.MoveVariableToX86reg(asmjit::x86::edx, &g_System->m_JumpToLocation, "System->m_JumpToLocation");
+        m_Assembler.MoveX86regToVariable(&g_Reg->m_PROGRAM_COUNTER, "PROGRAM_COUNTER", asmjit::x86::edx);
+        m_Assembler.MoveConstToVariable(&g_System->m_PipelineStage, "g_System->m_PipelineStage", PIPELINE_STAGE_NORMAL);
         ExitCodeBlock();
         break;
     case ExitReason_ResetRecompCode:
@@ -9512,6 +9521,9 @@ void CX86RecompilerOps::CompileExit(uint32_t JumpPC, uint32_t TargetPC, CRegInfo
         m_Assembler.push(0);
         m_Assembler.PushImm32("EXC_OV", EXC_OV);
         m_Assembler.CallThis((uint32_t)g_Reg, AddressOf(&CRegisters::TriggerException), "CRegisters::TriggerException", 12);
+        m_Assembler.MoveVariableToX86reg(asmjit::x86::edx, &g_System->m_JumpToLocation, "System->m_JumpToLocation");
+        m_Assembler.MoveX86regToVariable(&g_Reg->m_PROGRAM_COUNTER, "PROGRAM_COUNTER", asmjit::x86::edx);
+        m_Assembler.MoveConstToVariable(&g_System->m_PipelineStage, "g_System->m_PipelineStage", PIPELINE_STAGE_NORMAL);
         ExitCodeBlock();
         break;
     case ExitReason_AddressErrorExceptionRead32:
@@ -9540,6 +9552,9 @@ void CX86RecompilerOps::CompileExit(uint32_t JumpPC, uint32_t TargetPC, CRegInfo
         m_Assembler.push(0);
         m_Assembler.PushImm32("EXC_II", EXC_II);
         m_Assembler.CallThis((uint32_t)g_Reg, AddressOf(&CRegisters::TriggerException), "CRegisters::TriggerException", 12);
+        m_Assembler.MoveVariableToX86reg(asmjit::x86::edx, &g_System->m_JumpToLocation, "System->m_JumpToLocation");
+        m_Assembler.MoveX86regToVariable(&g_Reg->m_PROGRAM_COUNTER, "PROGRAM_COUNTER", asmjit::x86::edx);
+        m_Assembler.MoveConstToVariable(&g_System->m_PipelineStage, "g_System->m_PipelineStage", PIPELINE_STAGE_NORMAL);
         ExitCodeBlock();
         break;
     default: