feat(kernel): add WaitForInterrupt, AcknowledgeInterrupt, and WaitAny syscalls

crates/kernel/src/lib.rs

@@ -21,6 +21,7 @@ use domain::{
     process::{ProcessTable, MAX_PROCESSES},
     resource::Resource,
     scheduler::{multi_core::MultiCoreScheduler, Scheduler},
+    syscall::WaitSet,
     thread::{ThreadTable, ThreadState, MAX_THREADS},
 };
 use platform::Platform;
@@ -60,6 +61,7 @@ pub struct Kernel<P: Platform> {
     irqs: IrqRoutingTable,
     pending_messages: [Option<Message>; MAX_THREADS],
     pending_results: [Option<SyscallResult>; MAX_THREADS],
+    wait_sets: [Option<WaitSet>; MAX_THREADS],
 }
 
 impl<P: Platform> Kernel<P> {
@@ -77,6 +79,7 @@ impl<P: Platform> Kernel<P> {
             irqs: IrqRoutingTable::new(),
             pending_messages: [const { None }; MAX_THREADS],
             pending_results: [const { None }; MAX_THREADS],
+            wait_sets: [const { None }; MAX_THREADS],
         }
     }