From: Furkan Onder <furkanonder@protonmail.com>
Date: Thu, 14 Dec 2023 23:42:33 +0000 (+0300)
Subject: gh-112535: Update _Py_ThreadId() to support RISC-V (gh-113084)
X-Git-Tag: v3.13.0a3~369
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=f34e22c6470d1c5d0e2a3ffb2272d375c22654b9;p=thirdparty%2FPython%2Fcpython.git

gh-112535: Update _Py_ThreadId() to support RISC-V (gh-113084)

Update _Py_ThreadId() to support RISC-V
---

diff --git a/Include/object.h b/Include/object.h
index bd576b0bd432..d22e5c2b8be2 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -283,6 +283,13 @@ _Py_ThreadId(void)
     // Both GCC and Clang have supported __builtin_thread_pointer
     // for s390 from long time ago.
     tid = (uintptr_t)__builtin_thread_pointer();
+#elif defined(__riscv)
+    #if defined(__clang__) && _Py__has_builtin(__builtin_thread_pointer)
+    tid = (uintptr_t)__builtin_thread_pointer();
+    #else
+    // tp is Thread Pointer provided by the RISC-V ABI.
+    __asm__ ("mv %0, tp" : "=r" (tid));
+    #endif
 #else
   # error "define _Py_ThreadId for this platform"
 #endif