IPC: Add functions to read the input move/copy objects from an IPC request.

src/core/hle/ipc_helpers.h

@@ -233,6 +233,12 @@ public:
      */
     template <typename T>
     T PopRaw();
+
+    template <typename T>
+    Kernel::SharedPtr<T> GetMoveObject(size_t index);
+
+    template <typename T>
+    Kernel::SharedPtr<T> GetCopyObject(size_t index);
 };
 
 /// Pop ///
@@ -293,4 +299,14 @@ void RequestParser::Pop(First& first_value, Other&... other_values) {
     Pop(other_values...);
 }
 
+template <typename T>
+Kernel::SharedPtr<T> RequestParser::GetMoveObject(size_t index) {
+    return context->GetMoveObject<T>(index);
+}
+
+template <typename T>
+Kernel::SharedPtr<T> RequestParser::GetCopyObject(size_t index) {
+    return context->GetCopyObject<T>(index);
+}
+
 } // namespace IPC

src/core/hle/kernel/hle_ipc.cpp

@@ -53,9 +53,21 @@ void HLERequestContext::ParseCommandBuffer(u32_le* src_cmdbuf, bool incoming) {
         if (handle_descriptor_header->send_current_pid) {
             rp.Skip(2, false);
         }
+        if (incoming) {
+            // Populate the object lists with the data in the IPC request.
+            for (u32 handle = 0; handle < handle_descriptor_header->num_handles_to_copy; ++handle) {
+                copy_objects.push_back(Kernel::g_handle_table.GetGeneric(rp.Pop<Handle>()));
+            }
+            for (u32 handle = 0; handle < handle_descriptor_header->num_handles_to_move; ++handle) {
+                move_objects.push_back(Kernel::g_handle_table.GetGeneric(rp.Pop<Handle>()));
+            }
+        } else {
+            // For responses we just ignore the handles, they're empty and will be populated when
+            // translating the response.
             rp.Skip(handle_descriptor_header->num_handles_to_copy, false);
             rp.Skip(handle_descriptor_header->num_handles_to_move, false);
         }
+    }
 
     for (unsigned i = 0; i < command_header->num_buf_x_descriptors; ++i) {
         buffer_x_desciptors.push_back(rp.PopRaw<IPC::BufferDescriptorX>());

src/core/hle/kernel/hle_ipc.h

@@ -147,6 +147,18 @@ public:
         return domain != nullptr;
     }
 
+    template<typename T>
+    SharedPtr<T> GetCopyObject(size_t index) {
+        ASSERT(index < copy_objects.size());
+        return DynamicObjectCast(copy_objects[index]);
+    }
+
+    template<typename T>
+    SharedPtr<T> GetMoveObject(size_t index) {
+        ASSERT(index < move_objects.size());
+        return DynamicObjectCast(move_objects[index]);
+    }
+
     void AddMoveObject(SharedPtr<Object> object) {
         move_objects.emplace_back(std::move(object));
     }