diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 4871c4b648..e12d969c2e 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -6468,8 +6468,10 @@ static abi_long do_prctl(CPUArchState *env, abi_long option, abi_long arg2, } case PR_GET_TID_ADDRESS: - /* TODO */ - return -TARGET_EINVAL; + { + TaskState *ts = env_cpu(env)->opaque; + return put_user_ual(ts->child_tidptr, arg2); + } case PR_GET_FPEXC: case PR_SET_FPEXC: