extmod/modmachine: Use sys.exit as implementation of machine.soft_reset.

It does the same thing, raising `SystemExit`.

Signed-off-by: Damien George <[email protected]>

Author: dpgeorge

extmod/modmachine.c

@@ -24,6 +24,7 @@
  * THE SOFTWARE.
  */
 
+#include "py/builtin.h"
 #include "py/runtime.h"
 
 #if MICROPY_PY_MACHINE
@@ -35,6 +36,10 @@
 #include "drivers/dht/dht.h"
 #endif
 
+#if !MICROPY_PY_SYS_EXIT
+#error MICROPY_PY_MACHINE requires MICROPY_PY_SYS_EXIT
+#endif
+
 // The port must provide implementations of these low-level machine functions.
 
 static void mp_machine_idle(void);
@@ -61,11 +66,6 @@ NORETURN static void mp_machine_deepsleep(size_t n_args, const mp_obj_t *args);
 #include MICROPY_PY_MACHINE_INCLUDEFILE
 #endif
 
-static mp_obj_t machine_soft_reset(void) {
-    mp_raise_type(&mp_type_SystemExit);
-}
-static MP_DEFINE_CONST_FUN_OBJ_0(machine_soft_reset_obj, machine_soft_reset);
-
 #if MICROPY_PY_MACHINE_BOOTLOADER
 NORETURN mp_obj_t machine_bootloader(size_t n_args, const mp_obj_t *args) {
     mp_machine_bootloader(n_args, args);
@@ -156,7 +156,7 @@ static const mp_rom_map_elem_t machine_module_globals_table[] = {
     #endif
 
     // Reset related functions.
-    { MP_ROM_QSTR(MP_QSTR_soft_reset), MP_ROM_PTR(&machine_soft_reset_obj) },
+    { MP_ROM_QSTR(MP_QSTR_soft_reset), MP_ROM_PTR(&mp_sys_exit_obj) },
     #if MICROPY_PY_MACHINE_BOOTLOADER
     { MP_ROM_QSTR(MP_QSTR_bootloader), MP_ROM_PTR(&machine_bootloader_obj) },
     #endif

py/builtin.h

@@ -126,6 +126,8 @@ MP_DECLARE_CONST_FUN_OBJ_2(mp_op_getitem_obj);
 MP_DECLARE_CONST_FUN_OBJ_3(mp_op_setitem_obj);
 MP_DECLARE_CONST_FUN_OBJ_2(mp_op_delitem_obj);
 
+MP_DECLARE_CONST_FUN_OBJ_VAR_BETWEEN(mp_sys_exit_obj);
+
 // Modules needed by the runtime.
 extern const mp_obj_dict_t mp_module_builtins_globals;
 extern const mp_obj_module_t mp_module___main__;