+#define MAX_VIRTUAL_DELEGATE_OFFSET 32
+
+static gpointer
+get_delegate_virtual_invoke_impl (gboolean load_imt_reg, int offset, guint32 *code_len)
+{
+ guint8 *code, *start;
+ int size = 20;
+
+ if (offset / sizeof (gpointer) > MAX_VIRTUAL_DELEGATE_OFFSET)
+ return NULL;
+
+ start = code = mono_global_codeman_reserve (size);
+
+ /* Replace the this argument with the target */
+ amd64_mov_reg_reg (code, AMD64_RAX, AMD64_ARG_REG1, 8);
+ amd64_mov_reg_membase (code, AMD64_ARG_REG1, AMD64_RAX, MONO_STRUCT_OFFSET (MonoDelegate, target), 8);
+
+ if (load_imt_reg) {
+ /* Load the IMT reg */
+ amd64_mov_reg_membase (code, MONO_ARCH_IMT_REG, AMD64_RAX, MONO_STRUCT_OFFSET (MonoDelegate, method), 8);
+ }
+
+ /* Load the vtable */
+ amd64_mov_reg_membase (code, AMD64_RAX, AMD64_ARG_REG1, MONO_STRUCT_OFFSET (MonoObject, vtable), 8);
+ amd64_jump_membase (code, AMD64_RAX, offset);
+ mono_profiler_code_buffer_new (start, code - start, MONO_PROFILER_CODE_BUFFER_DELEGATE_INVOKE, NULL);
+
+ if (code_len)
+ *code_len = code - start;
+
+ return start;
+}
+