CPU/Recompiler: Implement syscall/break

src/core/cpu_recompiler_code_generator.cpp

@@ -163,6 +163,8 @@ bool CodeGenerator::CompileInstruction(const CodeBlockInstruction& cbi)
 
         case InstructionFunct::jr:
         case InstructionFunct::jalr:
+        case InstructionFunct::syscall:
+        case InstructionFunct::break_:
           result = Compile_Branch(cbi);
           break;
 
@@ -1219,14 +1221,26 @@ bool CodeGenerator::Compile_Branch(const CodeBlockInstruction& cbi)
 
     case InstructionOp::funct:
     {
-      Assert(cbi.instruction.r.funct == InstructionFunct::jr || cbi.instruction.r.funct == InstructionFunct::jalr);
-
+      if (cbi.instruction.r.funct == InstructionFunct::jr || cbi.instruction.r.funct == InstructionFunct::jalr)
+      {
         // npc = rs, link to rt
         Value branch_target = m_register_cache.ReadGuestRegister(cbi.instruction.r.rs);
         EmitBranch(Condition::Always,
                    (cbi.instruction.r.funct == InstructionFunct::jalr) ? cbi.instruction.r.rd : Reg::count, false,
                    std::move(branch_target));
       }
+      else if (cbi.instruction.r.funct == InstructionFunct::syscall ||
+               cbi.instruction.r.funct == InstructionFunct::break_)
+      {
+        const Exception excode =
+          (cbi.instruction.r.funct == InstructionFunct::syscall) ? Exception::Syscall : Exception::BP;
+        EmitRaiseException(excode);
+      }
+      else
+      {
+        UnreachableCode();
+      }
+    }
     break;
 
     case InstructionOp::beq: