fixes quantum and quantum break handling

src/sysc/sc_core_adapter.h

@@ -39,8 +39,13 @@ public:
     uint64_t get_state() override { return this->state.mstatus.backing.val; }
 
     void notify_phase(iss::arch_if::exec_phase p) override {
-        if (p == iss::arch_if::ISTART)
+        if (p == iss::arch_if::ISTART && !first) {
+            auto cycle_incr = owner->get_last_bus_cycles();
+            if(cycle_incr>1)
+                this->instr_if.update_last_instr_cycles(cycle_incr);
             owner->sync(this->instr_if.get_total_cycles());
+        }
+        first=false;
     }
 
     iss::sync_type needed_sync() const override { return iss::PRE_SYNC; }
@@ -175,8 +180,9 @@ public:
 private:
     sysc::tgfs::core_complex *const owner;
     sc_core::sc_event wfi_evt;
-    uint64_t hostvar;
+    uint64_t hostvar{std::numeric_limits<uint64_t>::max()};
     unsigned to_host_wr_cnt = 0;
+    bool first{true};
 };
 }
 #endif /* _SYSC_SC_CORE_ADAPTER_H_ */