}
	cwd, err = filepath.EvalSymlinks(cwd)
	if err != nil {
		log.Fatal(err)
	}
	goroot, err := filepath.EvalSymlinks(runtime.GOROOT())
	if err != nil {
		return "", false, err
	}
	if strings.HasPrefix(cwd, goroot) {
		subdir, err := filepath.Rel(goroot, cwd)
		if err != nil {
			return "", false, err
		}
		return subdir, true, nil
	}

			getuid() { return -1; },
			getgid() { return -1; },
			geteuid() { return -1; },
			getegid() { return -1; },
			getgroups() { throw enosys(); },
			pid: -1,
			ppid: -1,
			umask() { throw enosys(); },
			cwd() { throw enosys(); },
			chdir() { throw enosys(); },
		}
	}

	if (!globalThis.crypto) {
		throw new Error("globalThis.crypto is not available, polyfill required (crypto.getRandomValues only)");
	}

	CVTTSS2SL (R11), R11                    // f3450f2c1b or f34d0f2c1b
	CVTTSS2SL X2, R11                       // f3440f2cda or f34c0f2cda
	CVTTSS2SL X11, R11                      // f3450f2cdb or f34d0f2cdb
	CWD                                     // 6699
	CWDE                                    // 98
	DECW (BX)                               // 66ff0b
	DECW (R11)                              // 6641ff0b