From fb48ce4fbbdd9706bdacd81ad5a428824aa89444 Mon Sep 17 00:00:00 2001
From: Eyck-Alexander Jentzsch <alex@minres.com>
Date: Wed, 20 May 2026 15:58:10 +0200
Subject: [PATCH 1/3] adds a callback for each time that the vm gets started
 This is implemented for interp backend only

---
 src/iss/interp/vm_base.h | 4 ++++
 src/iss/vm_plugin.h      | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/src/iss/interp/vm_base.h b/src/iss/interp/vm_base.h
index 337e7dc..5e4f671 100644
--- a/src/iss/interp/vm_base.h
+++ b/src/iss/interp/vm_base.h
@@ -122,6 +122,8 @@ template <typename ARCH> class vm_base : public debugger_if, public vm_if {
     }
     int start(uint64_t count = std::numeric_limits<uint64_t>::max(), bool dump = false,
               finish_cond_e cond = finish_cond_e::ICOUNT_LIMIT | finish_cond_e::JUMP_TO_SELF) override {
+        for(const auto& plugin_entry : plugins)
+            plugin_entry.plugin.execution_start_callback();
         int error = 0;
         auto start = std::chrono::high_resolution_clock::now();
         virt_addr_t pc(iss::access_type::FETCH, arch::traits<ARCH>::MEM, get_reg<addr_t>(arch::traits<ARCH>::PC));
@@ -190,6 +192,7 @@ template <typename ARCH> class vm_base : public debugger_if, public vm_if {
             if(sync & POST_SYNC)
                 post_plugins.push_back(plugin_entry{plugin});
             sync_exec |= sync;
+            plugins.push_back({plugin});
         }
     }
 
@@ -238,6 +241,7 @@ template <typename ARCH> class vm_base : public debugger_if, public vm_if {
     // non-owning pointers
     // std::vector<Value *> loaded_regs{arch::traits<ARCH>::NUM_REGS, nullptr};
     iss::debugger::target_adapter_base* tgt_adapter{nullptr};
+    std::vector<plugin_entry> plugins;
     std::vector<plugin_entry> pre_plugins;
     std::vector<plugin_entry> post_plugins;
     std::vector<plugin_entry> illegal_cb_plugins;
diff --git a/src/iss/vm_plugin.h b/src/iss/vm_plugin.h
index e3c3e5e..ccb978d 100644
--- a/src/iss/vm_plugin.h
+++ b/src/iss/vm_plugin.h
@@ -64,6 +64,8 @@ class vm_plugin { // @suppress("Class has a virtual method and non-virtual destr
     virtual sync_type get_sync() = 0;
 
     virtual void callback(instr_info_t) = 0;
+
+    virtual void execution_start_callback(){};
 };
 } // namespace iss
 

From 752b9d676648ed6294313bdc10537428e3869b0f Mon Sep 17 00:00:00 2001
From: Eyck-Alexander Jentzsch <alex@minres.com>
Date: Wed, 3 Jun 2026 13:49:02 +0200
Subject: [PATCH 2/3] adds get_core_id to iif

---
 src/iss/instrumentation_if.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/iss/instrumentation_if.h b/src/iss/instrumentation_if.h
index f576ead..bfa7fd9 100644
--- a/src/iss/instrumentation_if.h
+++ b/src/iss/instrumentation_if.h
@@ -177,6 +177,12 @@ struct instrumentation_if {
      * @return unordered map containing symbol name as key
      */
     virtual std::unordered_map<std::string, uint64_t> const& get_symbol_table(std::string name) = 0;
+    /**
+     * get the core id
+     *
+     * @return core id
+     */
+    virtual unsigned get_core_id() = 0;
 };
 } // namespace v2
 } /* namespace iss */

From 634fee587d8db9542ba941197db0528b23784a22 Mon Sep 17 00:00:00 2001
From: Eyck-Alexander Jentzsch <alex@minres.com>
Date: Fri, 5 Jun 2026 18:31:38 +0200
Subject: [PATCH 3/3] adds default get_core_id

---
 src/iss/instrumentation_if.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/iss/instrumentation_if.h b/src/iss/instrumentation_if.h
index bfa7fd9..680e0d9 100644
--- a/src/iss/instrumentation_if.h
+++ b/src/iss/instrumentation_if.h
@@ -182,7 +182,7 @@ struct instrumentation_if {
      *
      * @return core id
      */
-    virtual unsigned get_core_id() = 0;
+    virtual unsigned get_core_id() { return 0; };
 };
 } // namespace v2
 } /* namespace iss */