1 files changed, 19 insertions, 0 deletions
diff --git a/riscv/devices.h b/riscv/devices.h
index 858353d..e7b80ad 100644
--- a/riscv/devices.h
+++ b/riscv/devices.h
@@ -71,6 +71,25 @@ class mem_t : public abstract_mem_t {
   reg_t sz;
 };
 
+class abstract_sim_if_t {
+public:
+  virtual ~abstract_sim_if_t() = default;
+  virtual bool load(reg_t addr, size_t len, uint8_t* bytes) = 0;
+  virtual bool store(reg_t addr, size_t len, const uint8_t* bytes) = 0;
+};
+
+class external_sim_device_t : public abstract_device_t {
+public:
+  external_sim_device_t(void* sim);
+  void set_simulator(void* sim);
+  bool load(reg_t addr, size_t len, uint8_t* bytes) override;
+  bool store(reg_t addr, size_t len, const uint8_t* bytes) override;
+  reg_t size() override;
+
+private:
+  void* external_simulator;
+};
+
 class clint_t : public abstract_device_t {
  public:
   clint_t(const simif_t*, uint64_t freq_hz, bool real_time);