diff --git a/src/number.rs b/src/number.rs
index 0f650aaad3..741b3380c8 100644
--- a/src/number.rs
+++ b/src/number.rs
@@ -77,6 +77,7 @@ pub const SYS_GETPPID: usize = 64;
 pub const SYS_GETUID: usize = 199;
 pub const SYS_IOPL: usize = 110;
 pub const SYS_KILL: usize = 37;
+pub const SYS_SIGQUEUE: usize = 101;
 pub const SYS_MPROTECT: usize = 125;
 pub const SYS_MKNS: usize = 984;
 pub const SYS_NANOSLEEP: usize = 162;
diff --git a/src/sigabi.rs b/src/sigabi.rs
index 475a669760..5bc3c898b9 100644
--- a/src/sigabi.rs
+++ b/src/sigabi.rs
@@ -1,11 +1,20 @@
-use core::sync::atomic::{AtomicUsize, Ordering};
+use core::sync::atomic::{AtomicU8, AtomicUsize, Ordering};
 
 /// Signal runtime struct for the entire process
 #[derive(Debug)]
 #[repr(C, align(4096))]
 pub struct SigProcControl {
     pub pending: AtomicU64,
+    pub qhead: AtomicU8,
+    pub _rsvd: [u8; 7],
     pub actions: [RawAction; 64],
+    pub queue: [RealtimeSig; 32],
+    pub qtail: AtomicU8,
+}
+#[derive(Debug)]
+#[repr(transparent)]
+pub struct RealtimeSig {
+    pub arg: NonatomicUsize,
 }
 #[derive(Debug)]
 #[repr(C, align(16))]
@@ -86,6 +95,11 @@ impl SigatomicUsize {
 pub struct NonatomicUsize(AtomicUsize);
 
 impl NonatomicUsize {
+    #[inline]
+    pub const fn new(a: usize) -> Self {
+        Self(AtomicUsize::new(a))
+    }
+
     #[inline]
     pub fn get(&self) -> usize {
         self.0.load(Ordering::Relaxed)