Index: generic/include/syscall/syscall.h
===================================================================
--- generic/include/syscall/syscall.h	(revision 9aa72b42058acb9ec55cd96d960e524465201dc6)
+++ generic/include/syscall/syscall.h	(revision 3b712407b1622e47a2a5c6daa5d419a062c6b246)
@@ -32,4 +32,5 @@
 typedef enum {
 	SYS_IO = 0,
+	SYS_TLS_SET = 1, /* Hardcoded in AMD64,IA32 uspace - psthread.S */
 	SYS_THREAD_CREATE,
 	SYS_THREAD_EXIT,
@@ -60,4 +61,6 @@
 extern __native syscall_handler(__native a1, __native a2, __native a3,
 				__native a4, __native id);
+extern __native sys_tls_set(__native addr);
+
 
 #endif