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1/* Thread-local storage descriptor handling in the ELF dynamic linker.
2 i386 version.
3 Copyright (C) 2005-2022 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20#ifndef _I386_DL_TLSDESC_H
21# define _I386_DL_TLSDESC_H 1
22
23/* Type used to represent a TLS descriptor in the GOT. */
24struct tlsdesc
25{
26 ptrdiff_t __attribute__ ((regparm (1))) (*entry) (struct tlsdesc *);
27 void *arg;
28};
29
30typedef struct dl_tls_index
31{
32 unsigned long int ti_module;
33 unsigned long int ti_offset;
34} tls_index;
35
36/* Type used as the argument in a TLS descriptor for a symbol that
37 needs dynamic TLS offsets. */
38struct tlsdesc_dynamic_arg
39{
40 tls_index tlsinfo;
41 size_t gen_count;
42};
43
44extern ptrdiff_t attribute_hidden __attribute__ ((regparm (1)))
45 _dl_tlsdesc_return (struct tlsdesc *),
46 _dl_tlsdesc_undefweak (struct tlsdesc *);
47
48# ifdef SHARED
49extern void *_dl_make_tlsdesc_dynamic (struct link_map *map,
50 size_t ti_offset) attribute_hidden;
51
52extern ptrdiff_t attribute_hidden __attribute__ ((regparm (1)))
53 _dl_tlsdesc_dynamic (struct tlsdesc *);
54# endif
55
56#endif
57

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source code of glibc/sysdeps/i386/dl-tlsdesc.h