diff --git a/src/acpi/aml/parser.rs b/src/acpi/aml/parser.rs
index 0b57f13..e31c6f7 100644
--- a/src/acpi/aml/parser.rs
+++ b/src/acpi/aml/parser.rs
@@ -27,11 +27,17 @@ pub struct AmlExecutionContext {
     pub local_vars: [AmlValue; 8],
     pub arg_vars: [AmlValue; 8],
     pub state: ExecutionState,
-    pub namespace_delta: Vec<String>
+    pub namespace_delta: Vec<String>,
+    pub ctx_id: u64
 }
 
 impl AmlExecutionContext {
     pub fn new(scope: String) -> AmlExecutionContext {
+        let mut idptr = ACPI_TABLE.next_ctx.write();
+        let id: u64 = *idptr;
+
+        *idptr += 1;
+        
         AmlExecutionContext {
             scope: scope,
             local_vars: [AmlValue::Uninitialized,
@@ -51,7 +57,8 @@ impl AmlExecutionContext {
                        AmlValue::Uninitialized,
                        AmlValue::Uninitialized],
             state: ExecutionState::EXECUTING,
-            namespace_delta: vec!()
+            namespace_delta: vec!(),
+            ctx_id: id
         }
     }
 
diff --git a/src/acpi/mod.rs b/src/acpi/mod.rs
index d22140b..04112f3 100644
--- a/src/acpi/mod.rs
+++ b/src/acpi/mod.rs
@@ -315,13 +315,15 @@ pub fn set_global_s_state(state: u8) {
 pub struct Acpi {
     pub fadt: RwLock<Option<Fadt>>,
     pub namespace: RwLock<Option<BTreeMap<String, AmlValue>>>,
-    pub hpet: RwLock<Option<Hpet>>
+    pub hpet: RwLock<Option<Hpet>>,
+    pub next_ctx: RwLock<u64>,
 }
 
 pub static ACPI_TABLE: Acpi = Acpi {
     fadt: RwLock::new(None),
     namespace: RwLock::new(None),
-    hpet: RwLock::new(None)
+    hpet: RwLock::new(None),
+    next_ctx: RwLock::new(0),
 };
 
 /// RSDP