shell_toplevel_b2a_os_thunk  315 shell/shell_toplevel.h extern AvmBox shell_toplevel_b2a_os_thunk(AvmMethodEnv env, uint32_t argc, AvmBox* argv);
shell_toplevel_b2a_os_thunk  316 shell/shell_toplevel.h #define avmplus_File_exists_thunk  shell_toplevel_b2a_os_thunk