1 /* $NetBSD: tls.h,v 1.2 2017/11/19 07:41:52 kamil Exp $ */ 2 /*- 3 * Copyright (c) 2011 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Joerg Sonnenberger. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef _SYS_TLS_H_ 32 #define _SYS_TLS_H_ 33 34 #include <sys/cdefs.h> 35 #include <machine/types.h> 36 37 #if defined(__HAVE_TLS_VARIANT_I) || defined(__HAVE_TLS_VARIANT_II) 38 39 #if defined(__HAVE_TLS_VARIANT_I) && defined(__HAVE_TLS_VARIANT_II) 40 #error Only one TLS variant can be supported at a time 41 #endif 42 43 struct tls_tcb { 44 #ifdef __HAVE_TLS_VARIANT_I 45 void **tcb_dtv; 46 void *tcb_pthread; 47 #else 48 void *tcb_self; 49 void **tcb_dtv; 50 void *tcb_pthread; 51 #endif 52 }; 53 54 __BEGIN_PUBLIC_DECLS 55 struct tls_tcb *_rtld_tls_allocate(void); 56 void _rtld_tls_free(struct tls_tcb *); 57 __END_PUBLIC_DECLS 58 #endif /* __HAVE_TLS_VARIANT_I || __HAVE_TLS_VARIANT_II */ 59 60 #endif /* _SYS_TLS_H_ */ 61