py/objfun: Support __name__ on native functions and generators.

This is now easy to support, since the first machine-word of a native
function tells how to find the prelude, from which the function name can be
extracted in the same way as for bytecode.

Signed-off-by: Damien George <damien@micropython.org>

py/objfun.c

@@ -139,14 +139,14 @@ STATIC qstr mp_obj_code_get_name(const mp_obj_fun_bc_t *fun, const byte *code_in
 
 qstr mp_obj_fun_get_name(mp_const_obj_t fun_in) {
     const mp_obj_fun_bc_t *fun = MP_OBJ_TO_PTR(fun_in);
+    const byte *bc = fun->bytecode;
+
     #if MICROPY_EMIT_NATIVE
     if (fun->base.type == &mp_type_fun_native || fun->base.type == &mp_type_native_gen_wrap) {
-        // TODO native functions don't have name stored
-        return MP_QSTR_;
+        bc = mp_obj_fun_native_get_prelude_ptr(fun);
     }
     #endif
 
-    const byte *bc = fun->bytecode;
     MP_BC_PRELUDE_SIG_DECODE(bc);
     return mp_obj_code_get_name(fun, bc);
 }

tests/run-tests.py

@@ -643,9 +643,7 @@ def run_tests(pyb, tests, args, result_dir, num_threads=1):
     # Some tests are known to fail with native emitter
     # Remove them from the below when they work
     if args.emit == "native":
-        skip_tests.update(
-            {"basics/%s.py" % t for t in "gen_yield_from_close generator_name".split()}
-        )  # require raise_varargs, generator name
+        skip_tests.add("basics/gen_yield_from_close.py")  # require raise_varargs
         skip_tests.update(
             {"basics/async_%s.py" % t for t in "with with2 with_break with_return".split()}
         )  # require async_with
@@ -656,7 +654,6 @@ def run_tests(pyb, tests, args, result_dir, num_threads=1):
         skip_tests.add("basics/del_deref.py")  # requires checking for unbound local
         skip_tests.add("basics/del_local.py")  # requires checking for unbound local
         skip_tests.add("basics/exception_chain.py")  # raise from is not supported
-        skip_tests.add("basics/fun_name.py")  # requires proper names for native functions
         skip_tests.add("basics/scope_implicit.py")  # requires checking for unbound local
         skip_tests.add("basics/sys_tracebacklimit.py")  # requires traceback info
         skip_tests.add("basics/try_finally_return2.py")  # requires raise_varargs