From fd70c2e600aa6dd87cea3c3a1df704bcfe95a3f9 Mon Sep 17 00:00:00 2001
From: vhertz <v3hertz@gmail.com>
Date: Sat, 1 Oct 2022 23:08:59 +0900
Subject: [PATCH] Implement ql_syscall_sched_yield

---
 qiling/os/posix/syscall/sched.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/qiling/os/posix/syscall/sched.py b/qiling/os/posix/syscall/sched.py
index 558e56d0a..407b2b5b8 100644
--- a/qiling/os/posix/syscall/sched.py
+++ b/qiling/os/posix/syscall/sched.py
@@ -3,7 +3,7 @@
 # Cross Platform and Multi Architecture Advanced Binary Emulation Framework
 #
 
-import os
+import os, gevent
 from multiprocessing import Process
 
 from qiling import Qiling
@@ -131,4 +131,8 @@ def ql_syscall_clone(ql: Qiling, flags: int, child_stack: int, parent_tidptr: in
     return regreturn
 
 def ql_syscall_sched_yield(ql: Qiling):
+    def _sched_yield(cur_thread):
+        gevent.sleep(0)
+    ql.emu_stop()
+    ql.os.thread_management.cur_thread.sched_cb = _sched_yield
     return 0