[XModule] Remove module and its functions while unloading

src/xenia/cpu/entry_table.cc

@@ -73,6 +73,15 @@ Entry::Status EntryTable::GetOrCreate(uint32_t address, Entry** out_entry) {
   return status;
 }
 
+void EntryTable::Delete(uint32_t address) {
+  auto global_lock = global_critical_region_.Acquire();
+  const auto itr = map_.find(address);
+
+  if (itr != map_.cend()) {
+    map_.erase(itr);
+  }
+}
+
 std::vector<Function*> EntryTable::FindWithAddress(uint32_t address) {
   auto global_lock = global_critical_region_.Acquire();
   std::vector<Function*> fns;

src/xenia/cpu/entry_table.h

@@ -41,6 +41,7 @@ class EntryTable {
 
   Entry* Get(uint32_t address);
   Entry::Status GetOrCreate(uint32_t address, Entry** out_entry);
+  void Delete(uint32_t address);
 
   std::vector<Function*> FindWithAddress(uint32_t address);
 

src/xenia/cpu/module.cc

@@ -147,6 +147,15 @@ Symbol::Status Module::DefineVariable(Symbol* symbol) {
   return DefineSymbol(symbol);
 }
 
+const std::vector<uint32_t> Module::GetAddressedFunctions() {
+  std::vector<uint32_t> addresses;
+
+  for (const auto& [key, _] : map_) {
+    addresses.push_back(key);
+  }
+  return addresses;
+}
+
 void Module::ForEachFunction(std::function<void(Function*)> callback) {
   auto global_lock = global_critical_region_.Acquire();
   for (auto& symbol : list_) {

src/xenia/cpu/module.h

@@ -46,6 +46,7 @@ class Module {
   Symbol::Status DefineFunction(Function* symbol);
   Symbol::Status DefineVariable(Symbol* symbol);
 
+  const std::vector<uint32_t> GetAddressedFunctions();
   void ForEachFunction(std::function<void(Function*)> callback);
   void ForEachSymbol(size_t start_index, size_t end_index,
                      std::function<void(Symbol*)> callback);

src/xenia/cpu/processor.cc

@@ -167,6 +167,27 @@ bool Processor::AddModule(std::unique_ptr<Module> module) {
   return true;
 }
 
+void Processor::RemoveModule(const std::string_view name) {
+  auto global_lock = global_critical_region_.Acquire();
+
+  auto itr =
+      std::find_if(modules_.cbegin(), modules_.cend(),
+                   [name](std::unique_ptr<xe::cpu::Module> const& module) {
+                     return module->name() == name;
+                   });
+
+  if (itr != modules_.cend()) {
+    const std::vector<uint32_t> addressed_functions =
+        (*itr)->GetAddressedFunctions();
+
+    modules_.erase(itr);
+
+    for (const uint32_t entry : addressed_functions) {
+      RemoveFunctionByAddress(entry);
+    }
+  }
+}
+
 Module* Processor::GetModule(const std::string_view name) {
   auto global_lock = global_critical_region_.Acquire();
   for (const auto& module : modules_) {
@@ -216,6 +237,10 @@ std::vector<Function*> Processor::FindFunctionsWithAddress(uint32_t address) {
   return entry_table_.FindWithAddress(address);
 }
 
+void Processor::RemoveFunctionByAddress(uint32_t address) {
+  entry_table_.Delete(address);
+}
+
 Function* Processor::ResolveFunction(uint32_t address) {
   Entry* entry;
   Entry::Status status = entry_table_.GetOrCreate(address, &entry);

src/xenia/cpu/processor.h

@@ -101,6 +101,7 @@ class Processor {
   }
 
   bool AddModule(std::unique_ptr<Module> module);
+  void RemoveModule(const std::string_view name);
   Module* GetModule(const std::string_view name);
   std::vector<Module*> GetModules();
 
@@ -111,6 +112,7 @@ class Processor {
 
   Function* QueryFunction(uint32_t address);
   std::vector<Function*> FindFunctionsWithAddress(uint32_t address);
+  void RemoveFunctionByAddress(uint32_t address);
 
   Function* LookupFunction(uint32_t address);
   Function* LookupFunction(Module* module, uint32_t address);

src/xenia/kernel/xmodule.cc

@@ -12,6 +12,7 @@
 #include "xenia/base/byte_stream.h"
 #include "xenia/base/logging.h"
 #include "xenia/base/string.h"
+#include "xenia/cpu/processor.h"
 #include "xenia/kernel/kernel_state.h"
 #include "xenia/kernel/user_module.h"
 
@@ -48,7 +49,10 @@ bool XModule::Matches(const std::string_view name) const {
 
 void XModule::OnLoad() { kernel_state_->RegisterModule(this); }
 
-void XModule::OnUnload() { kernel_state_->UnregisterModule(this); }
+void XModule::OnUnload() {
+  kernel_state_->processor()->RemoveModule(this->name());
+  kernel_state_->UnregisterModule(this);
+}
 
 X_STATUS XModule::GetSection(const std::string_view name,
                              uint32_t* out_section_data,