arm64: check CpuRunning at end of each timeslice

fix hang when exiting service menu in kofnw. Issue #867

core/rec-ARM64/ngen_arm64.S

@@ -19,8 +19,7 @@ ngen_LinkBlock_Generic_stub:
 .hidden ngen_LinkBlock_Shared_stub	
 .globl ngen_LinkBlock_Shared_stub	
 ngen_LinkBlock_Shared_stub:			
-    mov x0, lr							
-    sub x0, x0, #4							// go before the call
+    sub x0, lr, #4							// go before the call
     bl rdv_LinkBlock							// returns an RX addr
     br x0
 

core/rec-ARM64/rec_arm64.cpp

@@ -65,7 +65,7 @@ static jmp_buf jmp_env;
 static u32 cycle_counter;
 
 static void (*mainloop)(void *context);
-static void (*arm64_intc_sched)();
+static int (*arm64_intc_sched)();
 static void (*arm64_no_update)();
 
 void(*ngen_FailedToFindBlock)();
@@ -324,6 +324,12 @@ public:
 		Label cycles_remaining;
 		B(&cycles_remaining, pl);
 		GenCall(*arm64_intc_sched);
+		Label cpu_running;
+		Cbnz(w0, &cpu_running);
+		Mov(w29, block->vaddr);
+		Str(w29, sh4_context_mem_operand(&next_pc));
+		GenBranch(*arm64_no_update);
+		Bind(&cpu_running);
 		Bind(&cycles_remaining);
 
 		for (size_t i = 0; i < block->oplist.size(); i++)
@@ -1333,8 +1339,8 @@ public:
 		Label intc_sched;
 		Label end_mainloop;
 
-		// void intc_sched()
-		arm64_intc_sched = GetCursorAddress<void (*)()>();
+		// int intc_sched()
+		arm64_intc_sched = GetCursorAddress<int (*)()>();
 		B(&intc_sched);
 
 		// void no_update()
@@ -1421,6 +1427,7 @@ public:
 		GenCallRuntime(UpdateSystem);
 		Mov(lr, x29);
 		Cbnz(w0, &do_interrupts);
+		Ldr(w0, MemOperand(x28, offsetof(Sh4Context, CpuRunning)));
 		Ret();
 
 		Bind(&do_interrupts);
@@ -2086,7 +2093,7 @@ private:
 		CanonicalParamType type;
 		shil_param* prm;
 	};
-	vector<CC_PS> CC_pars;
+	std::vector<CC_PS> CC_pars;
 	std::vector<const WRegister*> call_regs;
 	std::vector<const XRegister*> call_regs64;
 	std::vector<const VRegister*> call_fregs;