add circuitpython code

1 files changed, 238 insertions, 0 deletions

diff --git a/circuitpython/py/modsys.c b/circuitpython/py/modsys.c
new file mode 100644
index 0000000..0ec5de1
--- /dev/null
+++ b/circuitpython/py/modsys.c
@@ -0,0 +1,238 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * SPDX-FileCopyrightText: Copyright (c) 2013, 2014 Damien P. George
+ * Copyright (c) 2014-2017 Paul Sokolovsky
+ *
+ * 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 "py/builtin.h"
+#include "py/objlist.h"
+#include "py/objtuple.h"
+#include "py/objstr.h"
+#include "py/objint.h"
+#include "py/objtype.h"
+#include "py/stream.h"
+#include "py/smallint.h"
+#include "py/runtime.h"
+#include "py/persistentcode.h"
+
+#if MICROPY_PY_SYS_SETTRACE
+#include "py/objmodule.h"
+#include "py/profile.h"
+#endif
+
+#if MICROPY_PY_SYS
+
+#include "genhdr/mpversion.h"
+
+// defined per port; type of these is irrelevant, just need pointer
+extern struct _mp_dummy_t mp_sys_stdin_obj;
+extern struct _mp_dummy_t mp_sys_stdout_obj;
+extern struct _mp_dummy_t mp_sys_stderr_obj;
+
+#if MICROPY_PY_IO && MICROPY_PY_SYS_STDFILES
+const mp_print_t mp_sys_stdout_print = {&mp_sys_stdout_obj, mp_stream_write_adaptor};
+#endif
+
+// version - Python language version that this implementation conforms to, as a string
+STATIC const MP_DEFINE_STR_OBJ(mp_sys_version_obj, "3.4.0");
+
+// version_info - Python language version that this implementation conforms to, as a tuple of ints
+#define I(n) MP_OBJ_NEW_SMALL_INT(n)
+// TODO: CPython is now at 5-element array, but save 2 els so far...
+STATIC const mp_obj_tuple_t mp_sys_version_info_obj = {{&mp_type_tuple}, 3, {I(3), I(4), I(0)}};
+
+// sys.implementation object
+// this holds the MicroPython version
+STATIC const mp_obj_tuple_t mp_sys_implementation_version_info_obj = {
+    {&mp_type_tuple},
+    3,
+    { I(MICROPY_VERSION_MAJOR), I(MICROPY_VERSION_MINOR), I(MICROPY_VERSION_MICRO) }
+};
+#if MICROPY_PERSISTENT_CODE_LOAD
+#define SYS_IMPLEMENTATION_ELEMS \
+    MP_ROM_QSTR(MP_QSTR_circuitpython), \
+    MP_ROM_PTR(&mp_sys_implementation_version_info_obj), \
+    MP_ROM_INT(MPY_FILE_HEADER_INT)
+#else
+#define SYS_IMPLEMENTATION_ELEMS \
+    MP_ROM_QSTR(MP_QSTR_circuitpython), \
+    MP_ROM_PTR(&mp_sys_implementation_version_info_obj)
+#endif
+#if MICROPY_PY_ATTRTUPLE
+STATIC const qstr impl_fields[] = {
+    MP_QSTR_name,
+    MP_QSTR_version,
+    #if MICROPY_PERSISTENT_CODE_LOAD
+    MP_QSTR_mpy,
+    #endif
+};
+STATIC MP_DEFINE_ATTRTUPLE(
+    mp_sys_implementation_obj,
+    impl_fields,
+    2 + MICROPY_PERSISTENT_CODE_LOAD,
+    SYS_IMPLEMENTATION_ELEMS
+    );
+#else
+STATIC const mp_rom_obj_tuple_t mp_sys_implementation_obj = {
+    {&mp_type_tuple},
+    2 + MICROPY_PERSISTENT_CODE_LOAD,
+    {
+        SYS_IMPLEMENTATION_ELEMS
+    }
+};
+#endif
+
+#undef I
+
+#ifdef MICROPY_PY_SYS_PLATFORM
+// platform - the platform that MicroPython is running on
+STATIC const MP_DEFINE_STR_OBJ(mp_sys_platform_obj, MICROPY_PY_SYS_PLATFORM);
+#endif
+
+// exit([retval]): raise SystemExit, with optional argument given to the exception
+STATIC mp_obj_t mp_sys_exit(size_t n_args, const mp_obj_t *args) {
+    if (n_args == 0) {
+        mp_raise_type(&mp_type_SystemExit);
+    } else {
+        mp_raise_type_arg(&mp_type_SystemExit, args[0]);
+    }
+}
+MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_sys_exit_obj, 0, 1, mp_sys_exit);
+
+#if MICROPY_PY_SYS_EXC_INFO
+STATIC mp_obj_t mp_sys_exc_info(void) {
+    mp_obj_t cur_exc = MP_OBJ_FROM_PTR(MP_STATE_VM(cur_exception));
+    mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(3, NULL));
+
+    if (cur_exc == MP_OBJ_NULL) {
+        t->items[0] = mp_const_none;
+        t->items[1] = mp_const_none;
+        t->items[2] = mp_const_none;
+        return MP_OBJ_FROM_PTR(t);
+    }
+
+    t->items[0] = MP_OBJ_FROM_PTR(mp_obj_get_type(cur_exc));
+    t->items[1] = cur_exc;
+    t->items[2] = mp_obj_exception_get_traceback_obj(cur_exc);
+    return MP_OBJ_FROM_PTR(t);
+}
+MP_DEFINE_CONST_FUN_OBJ_0(mp_sys_exc_info_obj, mp_sys_exc_info);
+#endif
+
+#if MICROPY_PY_SYS_GETSIZEOF
+STATIC mp_obj_t mp_sys_getsizeof(mp_obj_t obj) {
+    return mp_unary_op(MP_UNARY_OP_SIZEOF, obj);
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_sys_getsizeof_obj, mp_sys_getsizeof);
+#endif
+
+#if MICROPY_PY_SYS_ATEXIT
+// atexit(callback): Callback is called when sys.exit is called.
+STATIC mp_obj_t mp_sys_atexit(mp_obj_t obj) {
+    mp_obj_t old = MP_STATE_VM(sys_exitfunc);
+    MP_STATE_VM(sys_exitfunc) = obj;
+    return old;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_sys_atexit_obj, mp_sys_atexit);
+#endif
+
+#if MICROPY_PY_SYS_SETTRACE
+// settrace(tracefunc): Set the system's trace function.
+STATIC mp_obj_t mp_sys_settrace(mp_obj_t obj) {
+    return mp_prof_settrace(obj);
+}
+MP_DEFINE_CONST_FUN_OBJ_1(mp_sys_settrace_obj, mp_sys_settrace);
+#endif // MICROPY_PY_SYS_SETTRACE
+
+STATIC const mp_rom_map_elem_t mp_module_sys_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_sys) },
+
+    { MP_ROM_QSTR(MP_QSTR_path), MP_ROM_PTR(&MP_STATE_VM(mp_sys_path_obj)) },
+    { MP_ROM_QSTR(MP_QSTR_argv), MP_ROM_PTR(&MP_STATE_VM(mp_sys_argv_obj)) },
+    { MP_ROM_QSTR(MP_QSTR_version), MP_ROM_PTR(&mp_sys_version_obj) },
+    { MP_ROM_QSTR(MP_QSTR_version_info), MP_ROM_PTR(&mp_sys_version_info_obj) },
+    { MP_ROM_QSTR(MP_QSTR_implementation), MP_ROM_PTR(&mp_sys_implementation_obj) },
+    #ifdef MICROPY_PY_SYS_PLATFORM
+    { MP_ROM_QSTR(MP_QSTR_platform), MP_ROM_PTR(&mp_sys_platform_obj) },
+    #endif
+    #if MP_ENDIANNESS_LITTLE
+    { MP_ROM_QSTR(MP_QSTR_byteorder), MP_ROM_QSTR(MP_QSTR_little) },
+    #else
+    { MP_ROM_QSTR(MP_QSTR_byteorder), MP_ROM_QSTR(MP_QSTR_big) },
+    #endif
+
+    #if MICROPY_PY_SYS_MAXSIZE
+    #if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_NONE
+    // Maximum mp_int_t value is not representable as small int, so we have
+    // little choice but to use MP_SMALL_INT_MAX. Apps also should be careful
+    // to not try to compare sys.maxsize to some literal number (as this
+    // number might not fit in available int size), but instead count number
+    // of "one" bits in sys.maxsize.
+    { MP_ROM_QSTR(MP_QSTR_maxsize), MP_ROM_INT(MP_SMALL_INT_MAX) },
+    #else
+    { MP_ROM_QSTR(MP_QSTR_maxsize), MP_ROM_PTR(&mp_sys_maxsize_obj) },
+    #endif
+    #endif
+
+    #if MICROPY_PY_SYS_EXIT
+    { MP_ROM_QSTR(MP_QSTR_exit), MP_ROM_PTR(&mp_sys_exit_obj) },
+    #endif
+
+    #if MICROPY_PY_SYS_SETTRACE
+    { MP_ROM_QSTR(MP_QSTR_settrace), MP_ROM_PTR(&mp_sys_settrace_obj) },
+    #endif
+
+    #if MICROPY_PY_SYS_STDFILES
+    { MP_ROM_QSTR(MP_QSTR_stdin), MP_ROM_PTR(&mp_sys_stdin_obj) },
+    { MP_ROM_QSTR(MP_QSTR_stdout), MP_ROM_PTR(&mp_sys_stdout_obj) },
+    { MP_ROM_QSTR(MP_QSTR_stderr), MP_ROM_PTR(&mp_sys_stderr_obj) },
+    #endif
+
+    #if MICROPY_PY_SYS_MODULES
+    { MP_ROM_QSTR(MP_QSTR_modules), MP_ROM_PTR(&MP_STATE_VM(mp_loaded_modules_dict)) },
+    #endif
+    #if MICROPY_PY_SYS_EXC_INFO
+    { MP_ROM_QSTR(MP_QSTR_exc_info), MP_ROM_PTR(&mp_sys_exc_info_obj) },
+    #endif
+    #if MICROPY_PY_SYS_GETSIZEOF
+    { MP_ROM_QSTR(MP_QSTR_getsizeof), MP_ROM_PTR(&mp_sys_getsizeof_obj) },
+    #endif
+
+    /*
+     * Extensions to CPython
+     */
+
+    #if MICROPY_PY_SYS_ATEXIT
+    { MP_ROM_QSTR(MP_QSTR_atexit), MP_ROM_PTR(&mp_sys_atexit_obj) },
+    #endif
+};
+
+STATIC MP_DEFINE_CONST_DICT(mp_module_sys_globals, mp_module_sys_globals_table);
+
+const mp_obj_module_t mp_module_sys = {
+    .base = { &mp_type_module },
+    .globals = (mp_obj_dict_t *)&mp_module_sys_globals,
+};
+
+#endif