1 files changed, 136 insertions, 0 deletions
diff --git a/py/nativeglue.c b/py/nativeglue.c
new file mode 100644
index 0000000000..b0ab595eb9
--- /dev/null
+++ b/py/nativeglue.c
@@ -0,0 +1,136 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+
+#include "mpconfig.h"
+#include "nlr.h"
+#include "misc.h"
+#include "qstr.h"
+#include "obj.h"
+#include "runtime0.h"
+#include "runtime.h"
+#include "emitglue.h"
+
+#if MICROPY_EMIT_NATIVE
+
+#if 0 // print debugging info
+#define DEBUG_printf DEBUG_printf
+#else // don't print debugging info
+#define DEBUG_printf(...) (void)0
+#endif
+
+// convert a Micro Python object to a valid native value based on type
+mp_uint_t mp_convert_obj_to_native(mp_obj_t obj, mp_uint_t type) {
+    DEBUG_printf("mp_convert_obj_to_native(%p, " UINT_FMT ")\n", obj, type);
+    switch (type & 3) {
+        case MP_NATIVE_TYPE_OBJ: return (mp_uint_t)obj;
+        case MP_NATIVE_TYPE_BOOL:
+        case MP_NATIVE_TYPE_INT:
+        case MP_NATIVE_TYPE_UINT: return mp_obj_get_int(obj);
+        default: assert(0); return 0;
+    }
+}
+
+// convert a native value to a Micro Python object based on type
+mp_obj_t mp_convert_native_to_obj(mp_uint_t val, mp_uint_t type) {
+    DEBUG_printf("mp_convert_native_to_obj(" UINT_FMT ", " UINT_FMT ")\n", val, type);
+    switch (type & 3) {
+        case MP_NATIVE_TYPE_OBJ: return (mp_obj_t)val;
+        case MP_NATIVE_TYPE_BOOL: return MP_BOOL(val);
+        case MP_NATIVE_TYPE_INT: return mp_obj_new_int(val);
+        case MP_NATIVE_TYPE_UINT: return mp_obj_new_int_from_uint(val);
+        default: assert(0); return mp_const_none;
+    }
+}
+
+// wrapper that accepts n_args and n_kw in one argument
+// (native emitter can only pass at most 3 arguments to a function)
+mp_obj_t mp_native_call_function_n_kw(mp_obj_t fun_in, uint n_args_kw, const mp_obj_t *args) {
+    return mp_call_function_n_kw(fun_in, n_args_kw & 0xff, (n_args_kw >> 8) & 0xff, args);
+}
+
+// wrapper that makes raise obj and raises it
+NORETURN void mp_native_raise(mp_obj_t o) {
+    nlr_raise(mp_make_raise_obj(o));
+}
+
+// these must correspond to the respective enum in runtime0.h
+void *const mp_fun_table[MP_F_NUMBER_OF] = {
+    mp_convert_obj_to_native,
+    mp_convert_native_to_obj,
+    mp_load_const_int,
+    mp_load_const_dec,
+    mp_load_const_str,
+    mp_load_const_bytes,
+    mp_load_name,
+    mp_load_global,
+    mp_load_build_class,
+    mp_load_attr,
+    mp_load_method,
+    mp_store_name,
+    mp_store_global,
+    mp_store_attr,
+    mp_obj_subscr,
+    mp_obj_is_true,
+    mp_unary_op,
+    mp_binary_op,
+    mp_obj_new_tuple,
+    mp_obj_new_list,
+    mp_obj_list_append,
+    mp_obj_new_dict,
+    mp_obj_dict_store,
+#if MICROPY_PY_BUILTINS_SET
+    mp_obj_new_set,
+    mp_obj_set_store,
+#endif
+    mp_make_function_from_raw_code,
+    mp_native_call_function_n_kw,
+    mp_call_method_n_kw,
+    mp_getiter,
+    mp_iternext,
+    nlr_push,
+    nlr_pop,
+    mp_native_raise,
+    mp_import_name,
+    mp_import_from,
+    mp_import_all,
+#if MICROPY_PY_BUILTINS_SLICE
+    mp_obj_new_slice,
+#endif
+    mp_unpack_sequence,
+    mp_unpack_ex,
+};
+
+/*
+void mp_f_vector(mp_fun_kind_t fun_kind) {
+    (mp_f_table[fun_kind])();
+}
+*/
+
+#endif // MICROPY_EMIT_NATIVE