diff --git a/src/arch/x86/interrupt/handler.rs b/src/arch/x86/interrupt/handler.rs
index 9b22e994f7..3ced68da11 100644
--- a/src/arch/x86/interrupt/handler.rs
+++ b/src/arch/x86/interrupt/handler.rs
@@ -13,6 +13,12 @@ pub struct ScratchRegisters {
 }
 
 impl ScratchRegisters {
+    pub fn a(&self) -> usize {
+        self.eax
+    }
+    pub fn b(&self) -> usize {
+        self.edx
+    }
     pub fn dump(&self) {
         println!("EAX:   {:08x}", { self.eax });
         println!("ECX:   {:08x}", { self.ecx });
@@ -130,6 +136,12 @@ impl InterruptStack {
     pub fn stack_pointer(&self) -> usize {
         self.iret.esp
     }
+    pub fn instr_pointer(&self) -> usize {
+        self.iret.eip
+    }
+    pub fn flags(&self) -> usize {
+        self.iret.eflags
+    }
     pub fn set_instr_pointer(&mut self, eip: usize) {
         self.iret.eip = eip;
     }
diff --git a/src/context/context.rs b/src/context/context.rs
index 2323130a11..68f3ac6ca2 100644
--- a/src/context/context.rs
+++ b/src/context/context.rs
@@ -1,6 +1,6 @@
 use alloc::{borrow::Cow, sync::Arc, vec::Vec};
-use syscall::{SigProcControl, Sigcontrol, SIGKILL, SIGSTOP};
-use core::{cmp::Ordering, mem::{self, size_of}, num::NonZeroUsize, sync::atomic::AtomicU64};
+use syscall::{SigProcControl, Sigcontrol, SIGKILL, SIGSTOP, AtomicU64};
+use core::{cmp::Ordering, mem::{self, size_of}, num::NonZeroUsize};
 use spin::RwLock;
 
 use crate::{
diff --git a/syscall b/syscall
index 4d708dc980..c230cec21c 160000
--- a/syscall
+++ b/syscall
@@ -1 +1 @@
-Subproject commit 4d708dc98013a20572eb0819a8b87f50fdff5743
+Subproject commit c230cec21c5f2bce486140b977ce1f6860d6df93