add dynamic plugin loading

src/main.cpp

@@ -60,6 +60,10 @@ using tgc_d_xrb_mac_plat_type = iss::arch::riscv_hart_mu_p<iss::arch::tgc_d_xrb_
 #include <iss/log_categories.h>
 #include <iss/plugin/cycle_estimate.h>
 #include <iss/plugin/instruction_count.h>
+#include <iss/plugin/loader.h>
+#if defined(HAS_LUA)
+#include <iss/plugin/lua.h>
+#endif
 
 namespace po = boost::program_options;
 
@@ -172,8 +176,16 @@ int main(int argc, char *argv[]) {
                     vm->register_plugin(*ce_plugin);
                     plugin_list.push_back(ce_plugin);
                 } else {
-                    LOG(ERR) << "Unknown plugin name: " << plugin_name << ", valid names are 'ce', 'ic'" << std::endl;
-                    return 127;
+                    std::array<char const*, 1> a{{filename.c_str()}};
+                    iss::plugin::loader l(plugin_name, {{"initPlugin"}});
+                    auto* plugin = l.call_function<iss::vm_plugin*>("initPlugin", a.size(), a.data());
+                    if(plugin){
+                        vm->register_plugin(*plugin);
+                        plugin_list.push_back(plugin);
+                    } else {
+                        LOG(ERR) << "Unknown plugin name: " << plugin_name << ", valid names are 'ce', 'ic'" << std::endl;
+                        return 127;
+                    }
                 }
             }
         }