text: #include <stdint.h>
  #include <stdio.h>
  #include <string.h>
  #include <malloc.h>
  
  #include "py/nlr.h"
  #include "py/obj.h"
  #include "py/compile.h"
  #include "py/runtime0.h"
  #include "py/runtime.h"
  #include "py/stackctrl.h"
  #include "py/gc.h"
  #include "py/repl.h"
  
  #include "tinytest.h"
  #include "tinytest_macros.h"
  
  void do_str(const char *src);
  inline void do_str(const char *src) {
      mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0);
      if (lex == NULL) {
          tt_abort_msg("Lexer initialization error");
      }
  
      nlr_buf_t nlr;
      if (nlr_push(&nlr) == 0) {
          qstr source_name = lex->source_name;
          mp_parse_tree_t parse_tree = mp_parse(lex, MP_PARSE_FILE_INPUT);
          mp_obj_t module_fun = mp_compile(&parse_tree, source_name, MP_EMIT_OPT_NONE, true);
          mp_call_function_0(module_fun);
          nlr_pop();
      } else {
          mp_obj_t exc = (mp_obj_t)nlr.ret_val;
          if (mp_obj_is_subclass_fast(mp_obj_get_type(exc), &mp_type_SystemExit)) {
              // Assume that sys.exit() is called to skip the test.
              // TODO: That can be always true, we should set up convention to
              // use specific exit code as skip indicator.
              tinytest_set_test_skipped_();
              return;
          }
          mp_obj_print_exception(&mp_plat_print, exc);
          tt_abort_msg("Uncaught exception");
      }
  end:
      ;
  }
  
  #include "genhdr/tests.h"
  
  int main() {
      const char a[] = {"sim"};
      mp_stack_ctrl_init();
      mp_stack_set_limit(10240);
      void *heap = malloc(256 * 1024);
      gc_init(heap, (char*)heap + 256 * 1024);
      mp_init();
      int r = tinytest_main(1, (const char **) a, groups);
      mp_deinit();
      printf( "status: %i\n", r);
      return r;
  }
  
  void gc_collect(void) {
      gc_collect_start();
  
      // get the registers and the sp
      jmp_buf env;
      setjmp(env);
      volatile mp_uint_t dummy;
      void *sp = (void*)&dummy;
  
      // trace the stack, including the registers (since they live on the stack in this function)
      gc_collect_root((void**)sp, ((uint32_t)MP_STATE_VM(stack_top) - (uint32_t)sp) / sizeof(uint32_t));
  
      gc_collect_end();
  }
  
  mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
      return NULL;
  }
  
  mp_import_stat_t mp_import_stat(const char *path) {
      return MP_IMPORT_STAT_NO_EXIST;
  }
  
  mp_obj_t mp_builtin_open(size_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
      return mp_const_none;
  }
  MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
  
  void nlr_jump_fail(void *val) {
  }
  