From c744dbe9ac0e88e395a7464f20a4fd4184a0a222 Mon Sep 17 00:00:00 2001
From: Donghee Na <donghee.na@python.org>
Date: Fri, 8 Dec 2023 14:28:07 +0000
Subject: gh-112535: Update _Py_ThreadId() to support s390/s390x (gh-112751)

---
 Include/object.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Include/object.h b/Include/object.h
index 85abd30..bd576b0 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -279,6 +279,10 @@ _Py_ThreadId(void)
     __asm__ ("" : "=r" (tp));
     tid = tp;
     #endif
+#elif defined(__s390__) && defined(__GNUC__)
+    // Both GCC and Clang have supported __builtin_thread_pointer
+    // for s390 from long time ago.
+    tid = (uintptr_t)__builtin_thread_pointer();
 #else
   # error "define _Py_ThreadId for this platform"
 #endif
-- 
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