xref: /freebsd/lib/libc/gen/tls.c (revision 2546665afcaf0d53dc2c7058fee96354b3680f5a)
1 /*-
2  * Copyright (c) 2004 Doug Rabson
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  *	$FreeBSD$
27  */
28 
29 /*
30  * Define stubs for TLS internals so that programs and libraries can
31  * link. These functions will be replaced by functional versions at
32  * runtime from ld-elf.so.1.
33  */
34 
35 #include <stddef.h>
36 
37 #ifdef __i386__
38 
39 extern void *___tls_get_addr(void *ti) __attribute__((__regparm__(1)));
40 
41 #pragma weak ___tls_get_addr
42 __attribute__((__regparm__(1)))
43 void *
44 ___tls_get_addr(void *ti)
45 {
46 	return (0);
47 }
48 
49 #endif
50 
51 #pragma weak __tls_get_addr
52 void *
53 __tls_get_addr()
54 {
55 	return (0);
56 }
57 
58 #pragma weak _rtld_allocate_tls
59 void *
60 _rtld_allocate_tls(void *oldtls, size_t tcbsize, size_t tcbalign)
61 {
62 	return (0);
63 }
64 
65 #pragma weak _rtld_free_tls
66 void
67 _rtld_free_tls(void *tcb, size_t tcbsize, size_t tcbalign)
68 {
69 }
70