1 /* Thread-local storage descriptor handling in the ELF dynamic linker. 2 ARM version. 3 Copyright (C) 2005-2021 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; witout 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 _ARM_DL_TLSDESC_H 21 # define _ARM_DL_TLSDESC_H 1 22 23 /* Type used to represent a TLS descriptor in the GOT. */ 24 struct tlsdesc 25 { 26 union 27 { 28 void *pointer; 29 long value; 30 } argument; 31 ptrdiff_t (*entry)(struct tlsdesc *); 32 }; 33 34 35 typedef struct dl_tls_index 36 { 37 unsigned long int ti_module; 38 unsigned long int ti_offset; 39 } tls_index; 40 41 /* Type used as the argument in a TLS descriptor for a symbol that 42 needs dynamic TLS offsets. */ 43 struct tlsdesc_dynamic_arg 44 { 45 tls_index tlsinfo; 46 size_t gen_count; 47 }; 48 49 extern ptrdiff_t attribute_hidden 50 _dl_tlsdesc_return(struct tlsdesc *), 51 _dl_tlsdesc_undefweak(struct tlsdesc *); 52 53 # ifdef SHARED 54 extern void *_dl_make_tlsdesc_dynamic (struct link_map *map, size_t ti_offset); 55 56 extern ptrdiff_t attribute_hidden 57 _dl_tlsdesc_dynamic(struct tlsdesc *); 58 # endif 59 60 #endif 61