1 files changed, 36 insertions, 0 deletions
diff --git a/library/std/src/sys/vxworks/rand.rs b/library/std/src/sys/vxworks/rand.rs
new file mode 100644
index 00000000000..3a1ff5fd3b9
--- /dev/null
+++ b/library/std/src/sys/vxworks/rand.rs
@@ -0,0 +1,36 @@
+use crate::mem;
+use crate::slice;
+
+pub fn hashmap_random_keys() -> (u64, u64) {
+    let mut v = (0, 0);
+    unsafe {
+        let view = slice::from_raw_parts_mut(&mut v as *mut _ as *mut u8, mem::size_of_val(&v));
+        imp::fill_bytes(view);
+    }
+    return v;
+}
+
+mod imp {
+    use crate::io;
+    use core::sync::atomic::{AtomicBool, Ordering::Relaxed};
+
+    pub fn fill_bytes(v: &mut [u8]) {
+        static RNG_INIT: AtomicBool = AtomicBool::new(false);
+        while !RNG_INIT.load(Relaxed) {
+            let ret = unsafe { libc::randSecure() };
+            if ret < 0 {
+                panic!("couldn't generate random bytes: {}", io::Error::last_os_error());
+            } else if ret > 0 {
+                RNG_INIT.store(true, Relaxed);
+                break;
+            }
+            unsafe { libc::usleep(10) };
+        }
+        let ret = unsafe {
+            libc::randABytes(v.as_mut_ptr() as *mut libc::c_uchar, v.len() as libc::c_int)
+        };
+        if ret < 0 {
+            panic!("couldn't generate random bytes: {}", io::Error::last_os_error());
+        }
+    }
+}