Index: uspace/lib/c/arch/arm32/src/tls.c
===================================================================
--- uspace/lib/c/arch/arm32/src/tls.c	(revision ae7d03c05f24b857bbbdbcf3dafbf8ecc6c286ab)
+++ uspace/lib/c/arch/arm32/src/tls.c	(revision 69eaaeeedb2bd6eff114507a092247ed1995c5b5)
@@ -1,3 +1,4 @@
 /*
+ * Copyright (c) 2019 Jiri Svoboda
  * Copyright (c) 2007 Pavel Jancik
  * All rights reserved.
@@ -38,4 +39,8 @@
 #include <stddef.h>
 
+#ifdef CONFIG_RTLD
+#include <rtld/rtld.h>
+#endif
+
 tcb_t *tls_alloc_arch(size_t size, size_t align)
 {
@@ -48,4 +53,32 @@
 }
 
+/*
+ * Rtld TLS support
+ */
+
+typedef struct {
+	unsigned long int ti_module;
+	unsigned long int ti_offset;
+} tls_index;
+
+int __tls_debug = 0;
+
+void *__tls_get_addr(tls_index *ti);
+
+void *__tls_get_addr(tls_index *ti)
+{
+	uint8_t *tls;
+
+#ifdef CONFIG_RTLD
+	if (runtime_env != NULL) {
+		return rtld_tls_get_addr(runtime_env, __tcb_get(),
+		    ti->ti_module, ti->ti_offset);
+	}
+#endif
+	/* Get address of static TLS block */
+	tls = tls_get();
+	return tls + ti->ti_offset;
+}
+
 /** @}
  */