1 /* $OpenBSD: tib.h,v 1.3 2019/06/02 01:03:01 guenther Exp $ */ 2 /* 3 * Copyright (c) 2015 Philip Guenther <guenther@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #ifndef _LIBC_TIB_H_ 19 #define _LIBC_TIB_H_ 20 21 #include_next <tib.h> 22 23 __BEGIN_HIDDEN_DECLS 24 25 #ifndef PIC 26 /* 27 * Handling for static TLS allocation in staticly linked programs 28 */ 29 /* Given the base of a TIB allocation, initialize the static TLS for a thread */ 30 struct tib *_static_tls_init(char *_base, void *_thread); 31 32 /* size of static TLS allocation */ 33 extern size_t _static_tls_size; 34 35 /* alignment of static TLS allocation */ 36 extern int _static_tls_align; 37 38 /* base-offset alignment of static TLS allocation */ 39 extern int _static_tls_align_offset; 40 #endif 41 42 /* saved handle to callbacks from ld.so */ 43 extern const dl_cb *_dl_cb; 44 45 #if ! TCB_HAVE_MD_GET 46 /* 47 * For archs without a fast TCB_GET(): the pointer to the TCB in 48 * single-threaded programs, whether linked staticly or dynamically. 49 */ 50 extern void *_libc_single_tcb; 51 #endif 52 53 __END_HIDDEN_DECLS 54 55 56 PROTO_NORMAL(__get_tcb); 57 PROTO_NORMAL(__set_tcb); 58 59 #endif /* _LIBC_TIB_H_ */ 60