Index: sys/sys/tls.h
===================================================================
RCS file: /cvsroot/src/sys/sys/tls.h,v
retrieving revision 1.2
diff -u -r1.2 tls.h
--- sys/sys/tls.h	19 Nov 2017 07:41:52 -0000	1.2
+++ sys/sys/tls.h	11 Sep 2020 14:07:47 -0000
@@ -53,6 +53,7 @@
 
 __BEGIN_PUBLIC_DECLS
 struct tls_tcb	*_rtld_tls_allocate(void);
+struct tls_tcb	*_rtld_tls_self(void);
 void	 	 _rtld_tls_free(struct tls_tcb *);
 __END_PUBLIC_DECLS
 #endif /* __HAVE_TLS_VARIANT_I || __HAVE_TLS_VARIANT_II */
Index: libexec/ld.elf_so/tls.c
===================================================================
RCS file: /cvsroot/src/libexec/ld.elf_so/tls.c,v
retrieving revision 1.14
diff -u -r1.14 tls.c
--- libexec/ld.elf_so/tls.c	5 Nov 2019 22:22:42 -0000	1.14
+++ libexec/ld.elf_so/tls.c	11 Sep 2020 14:07:47 -0000
@@ -166,6 +166,20 @@
 	return tcb;
 }
 
+struct tls_tcb *
+_rtld_tls_self(void)
+{
+	struct tls_tcb *tcb;
+
+#ifdef __HAVE___LWP_GETTCB_FAST
+	tcb = __lwp_gettcb_fast();
+#else
+	tcb = __lwp_getprivate_fast();
+#endif
+
+	return tcb;
+}
+
 void
 _rtld_tls_free(struct tls_tcb *tcb)
 {