x86_64: architecture-dependent sigreturn() implementation

lux-operating-system · Nov 27, 2024 · 65bdc0b · 65bdc0b
1 parent 521d935
commit 65bdc0b
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/src/platform/x86_64/ipc/signal.c b/src/platform/x86_64/ipc/signal.c
@@ -63,4 +63,13 @@ int platformSendSignal(Thread *sender, Thread *dest, int signum, uintptr_t handl
     *stack = dest->signalTrampoline;
 
     return 0;
+}
+
+/* platformSigreturn(): restores context before a signal handler was invoked
+ * params: t - thread to restore
+ * returns: nothing
+ */
+
+void platformSigreturn(Thread *t) {
+    memcpy(t->context, t->signalContext, PLATFORM_CONTEXT_SIZE);
 }