1 /* Thread-local storage handling in the ELF dynamic linker. PowerPC version.
2 Copyright (C) 2015-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
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.
9
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.
14
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/>. */
18
19 #include <csu/libc-tls.c>
20 #include <dl-tls.h>
21
22 /* On powerpc, the linker usually optimizes code sequences used to access
23 Thread Local Storage. However, when the user disables these optimizations
24 by passing --no-tls-optimze to the linker, we need to provide __tls_get_addr
25 in static libc in order to avoid undefined references to that symbol. */
26
27 void *
__tls_get_addr(tls_index * ti)28 __tls_get_addr (tls_index *ti)
29 {
30 dtv_t *dtv = THREAD_DTV ();
31 return (char *) dtv[1].pointer.val + ti->ti_offset + TLS_DTV_OFFSET;
32 }
33