source: mainline/uspace/lib/c/arch/arm32/src/tls.c

Last change on this file was 3ffb69b, checked in by Jiri Svoboda <jiri@…>, 6 years ago

Dynamic linking for arm32

  • Property mode set to 100644
File size: 2.3 KB
Line 
1/*
2 * Copyright (c) 2019 Jiri Svoboda
3 * Copyright (c) 2007 Pavel Jancik
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * - Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * - Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * - The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30/** @addtogroup libcarm32 arm32
31 * @brief arm32 architecture dependent parts of libc
32 * @ingroup lc
33 * @{
34 */
35/** @file
36 */
37
38#include <tls.h>
39#include <stddef.h>
40
41#ifdef CONFIG_RTLD
42#include <rtld/rtld.h>
43#endif
44
45tcb_t *tls_alloc_arch(size_t size, size_t align)
46{
47 return tls_alloc_variant_1(size, align);
48}
49
50void tls_free_arch(tcb_t *tcb, size_t size, size_t align)
51{
52 tls_free_variant_1(tcb, size, align);
53}
54
55/*
56 * Rtld TLS support
57 */
58
59typedef struct {
60 unsigned long int ti_module;
61 unsigned long int ti_offset;
62} tls_index;
63
64int __tls_debug = 0;
65
66void *__tls_get_addr(tls_index *ti);
67
68void *__tls_get_addr(tls_index *ti)
69{
70 uint8_t *tls;
71
72#ifdef CONFIG_RTLD
73 if (runtime_env != NULL) {
74 return rtld_tls_get_addr(runtime_env, __tcb_get(),
75 ti->ti_module, ti->ti_offset);
76 }
77#endif
78 /* Get address of static TLS block */
79 tls = tls_get();
80 return tls + ti->ti_offset;
81}
82
83/** @}
84 */
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