1 files changed, 50 insertions, 0 deletions
diff --git a/py/modsys.c b/py/modsys.c
new file mode 100644
index 0000000000..59539b3b90
--- /dev/null
+++ b/py/modsys.c
@@ -0,0 +1,50 @@
+#include "misc.h"
+#include "mpconfig.h"
+#include "qstr.h"
+#include "obj.h"
+#include "builtin.h"
+#include "runtime.h"
+#include "objlist.h"
+
+#if MICROPY_ENABLE_MOD_SYS
+
+// These should be implemented by ports, specific types don't matter,
+// only addresses.
+struct _dummy_t;
+extern struct _dummy_t mp_sys_stdin_obj;
+extern struct _dummy_t mp_sys_stdout_obj;
+extern struct _dummy_t mp_sys_stderr_obj;
+
+mp_obj_list_t mp_sys_path_obj;
+mp_obj_list_t mp_sys_argv_obj;
+
+STATIC const mp_map_elem_t mp_module_sys_globals_table[] = {
+    { MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_sys) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_path), (mp_obj_t)&mp_sys_path_obj },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_argv), (mp_obj_t)&mp_sys_argv_obj },
+
+#if MICROPY_MOD_SYS_STDFILES
+    { MP_OBJ_NEW_QSTR(MP_QSTR_stdin), (mp_obj_t)&mp_sys_stdin_obj },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_stdout), (mp_obj_t)&mp_sys_stdout_obj },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_stderr), (mp_obj_t)&mp_sys_stderr_obj },
+#endif
+};
+
+STATIC const mp_obj_dict_t mp_module_sys_globals = {
+    .base = {&mp_type_dict},
+    .map = {
+        .all_keys_are_qstrs = 1,
+        .table_is_fixed_array = 1,
+        .used = sizeof(mp_module_sys_globals_table) / sizeof(mp_map_elem_t),
+        .alloc = sizeof(mp_module_sys_globals_table) / sizeof(mp_map_elem_t),
+        .table = (mp_map_elem_t*)mp_module_sys_globals_table,
+    },
+};
+
+const mp_obj_module_t mp_module_sys = {
+    .base = { &mp_type_module },
+    .name = MP_QSTR_sys,
+    .globals = (mp_obj_dict_t*)&mp_module_sys_globals,
+};
+
+#endif