1 /* Thread-local storage handling in the ELF dynamic linker. i386 version.
2 Copyright (C) 2002-2024 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
20 /* Type used for the representation of TLS information in the GOT. */
21 typedef struct dl_tls_index
23 unsigned long int ti_module
;
24 unsigned long int ti_offset
;
29 /* This is the prototype for the GNU version. */
30 extern void *___tls_get_addr (tls_index
*ti
)
31 __attribute__ ((__regparm__ (1)));
32 extern void *___tls_get_addr_internal (tls_index
*ti
)
33 __attribute__ ((__regparm__ (1))) attribute_hidden
;
36 /* The special thing about the x86 TLS ABI is that we have two
37 variants of the __tls_get_addr function with different calling
38 conventions. The GNU version, which we are mostly concerned here,
39 takes the parameter in a register. The name is changed by adding
40 an additional underscore at the beginning. The Sun version uses
41 the normal calling convention. */
43 __tls_get_addr (tls_index
*ti
)
45 return ___tls_get_addr_internal (ti
);
49 /* Prepare using the definition of __tls_get_addr in the generic
50 version of this file. */
51 # define __tls_get_addr __attribute__ ((__regparm__ (1))) ___tls_get_addr
52 strong_alias (___tls_get_addr
, ___tls_get_addr_internal
)
53 rtld_hidden_proto (___tls_get_addr
)
54 rtld_hidden_def (___tls_get_addr
)
57 /* Users should get the better interface. */
58 # define __tls_get_addr ___tls_get_addr