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-rw-r--r--src/focaccia/qemu/target.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/focaccia/qemu/target.py b/src/focaccia/qemu/target.py
index 3877bcc..9bb2c5d 100644
--- a/src/focaccia/qemu/target.py
+++ b/src/focaccia/qemu/target.py
@@ -407,5 +407,6 @@ class GDBServerStateIterator(GDBServerConnector):
         return GDBProgramState(self._process, gdb.selected_frame(), self.arch)
 
     def context_switch(self, thread_number: int) -> None:
-        self.sock.send(bytes([thread_number]))
+        data = thread_number.to_bytes(8, byteorder='little', signed=False)
+        self.sock.send(data)