1 /* Thread-local storage descriptor handling in the ELF dynamic linker.
3 Copyright (C) 2005, 2008 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
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.
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.
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 <http://www.gnu.org/licenses/>. */
20 #ifndef _X86_64_DL_TLSDESC_H
21 # define _X86_64_DL_TLSDESC_H 1
23 /* Use this to access DT_TLSDESC_PLT and DT_TLSDESC_GOT. */
25 # define ADDRIDX(tag) (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGNUM \
26 + DT_EXTRANUM + DT_VALNUM + DT_ADDRTAGIDX (tag))
29 /* Type used to represent a TLS descriptor in the GOT. */
32 /* Anonymous union is used here to ensure that GOT entry slot is always
33 8 bytes for both x32 and x86-64. */
36 ptrdiff_t (*entry
) (struct tlsdesc
*on_rax
);
46 typedef struct dl_tls_index
52 /* Type used as the argument in a TLS descriptor for a symbol that
53 needs dynamic TLS offsets. */
54 struct tlsdesc_dynamic_arg
60 extern ptrdiff_t attribute_hidden
61 _dl_tlsdesc_return(struct tlsdesc
*on_rax
),
62 _dl_tlsdesc_undefweak(struct tlsdesc
*on_rax
),
63 _dl_tlsdesc_resolve_rela(struct tlsdesc
*on_rax
),
64 _dl_tlsdesc_resolve_hold(struct tlsdesc
*on_rax
);
67 extern void *internal_function
_dl_make_tlsdesc_dynamic (struct link_map
*map
,
70 extern ptrdiff_t attribute_hidden
_dl_tlsdesc_dynamic(struct tlsdesc
*);