scheduler: sched_terminateprogram()

kernel-src/include/kernel/scheduler.h

@@ -155,5 +155,6 @@ void sched_targetcpu(struct cpu_t *cpu);
 void sched_sleepus(size_t us);
 void sched_apentry();
 void sched_inactiveproc(proc_t *proc);
+void sched_terminateprogram(int status);
 
 #endif

kernel-src/sys/scheduler.c

@@ -407,6 +407,19 @@ void sched_stopotherthreads() {
 	proc->nomorethreads = false;
 }
 
+void sched_terminateprogram(int status) {
+	thread_t *thread = _cpu()->thread;
+	proc_t *proc = thread->proc;
+	if (spinlock_try(&proc->exiting) == false)
+		sched_threadexit();
+
+	sched_stopotherthreads();
+
+	proc->status = status;
+
+	sched_threadexit();
+}
+
 static void yield(context_t *context) {
 	thread_t *thread = _cpu()->thread;
 

kernel-src/sys/signal.c

@@ -253,12 +253,10 @@ bool signal_check(struct thread_t *thread, context_t *context, bool syscall, uin
 	THREAD_ENTER(thread);
 
 	if (SIGNAL_GET(&proc->signals.pending, SIGKILL) || SIGNAL_GET(&thread->signals.pending, SIGKILL)) {
-		// TODO terminate entire program
 		THREAD_LEAVE(thread);
 		PROCESS_LEAVE(proc);
-		proc->status = SIGKILL;
 		interrupt_set(true);
-		sched_threadexit();
+		sched_terminateprogram(SIGKILL);
 	}
 
 	// find the first pending signal which is unmasked
@@ -312,12 +310,10 @@ bool signal_check(struct thread_t *thread, context_t *context, bool syscall, uin
 				goto leave;
 			case ACTION_CORE:
 			case ACTION_TERM:
-				// TODO terminate entire program
-				proc->status = signal;
 				THREAD_LEAVE(thread);
 				PROCESS_LEAVE(proc);
 				interrupt_set(true);
-				sched_threadexit();
+				sched_terminateprogram(signal);
 			case ACTION_STOP:
 				// TODO what if a thread unmasks a stop signal?
 				// check if sigcont is not pending for the thread (SIGCONT is always sent to the thread)

kernel-src/sys/syscalls/exit.c

@@ -6,14 +6,6 @@
 #include <semaphore.h>
 
 __attribute__((noreturn)) void syscall_exit(context_t *context, int status) {
-	thread_t *thread = _cpu()->thread; 
-	proc_t *proc = thread->proc;
-	if (spinlock_try(&proc->exiting) == false)
-		sched_threadexit();
-
-	sched_stopotherthreads();
-
-	proc->status = status << 8;
-
-	sched_threadexit();
+	sched_terminateprogram(status << 8);
+	__builtin_unreachable();
 }