adds coverage plugin

src/plugin/cov.cpp

@@ -0,0 +1,32 @@
+#include <iss/plugin/cov.h>
+#include <iss/arch_if.h>
+#include <iostream>
+
+
+iss::plugin::cov::cov() {
+    std::cout << "Entering Constructor"<<std::endl;
+    output.open("output.txt");
+
+}
+
+iss::plugin::cov::~cov() {
+    std::cout << "Entering Destructor"<<std::endl;
+    output.close();
+
+
+}
+
+bool iss::plugin::cov::registration(const char *const version, vm_if& vm) {
+    instr_if = vm.get_arch()->get_instrumentation_if();
+    return true;
+}
+void iss::plugin::cov::callback(instr_info_t iinfo, const exec_info&) {
+//    if((instr_if->get_next_pc() - instr_if->get_pc() != 4) ||( instr_if->get_next_pc() - instr_if->get_pc() != 2)){
+//        std::cout << "jump from " << std::hex << instr_if->get_pc() << " to " << instr_if->get_next_pc()<< " after " << std::dec << counter <<" linear instructions" <<std::endl;
+//        counter = 0;
+//    }else {
+//        counter++;
+//    }
+
+    output<<std::hex << instr_if->get_pc() << std::endl;
+}

src/sysc/core_complex.cpp

@@ -69,6 +69,8 @@ using tgc_d_xrb_nn_plat_type = iss::arch::riscv_hart_mu_p<iss::arch::tgc_d_xrb_n
 #include <array>
 #include <iss/plugin/cycle_estimate.h>
 #include <iss/plugin/instruction_count.h>
+#include <iss/plugin/cov.h>
+
 // clang-format on
 
 #define STR(X) #X
@@ -423,6 +425,10 @@ void core_complex::before_end_of_elaboration() {
                 auto *plugin = new iss::plugin::cycle_estimate(filename);
                 cpu->vm->register_plugin(*plugin);
                 plugin_list.push_back(plugin);
+            } else if (plugin_name == "cov") {
+                auto *plugin = new iss::plugin::cov();
+                cpu->vm->register_plugin(*plugin);
+                plugin_list.push_back(plugin);
             } else {
                 std::array<char const*, 1> a{{filename.c_str()}};
                 iss::plugin::loader l(plugin_name, {{"initPlugin"}});