1 /* Thread-local storage descriptor handling in the ELF dynamic linker. 2 AArch64 version. 3 Copyright (C) 2011-2021 Free Software Foundation, Inc. 4 5 This file is part of the GNU C Library. 6 7 The GNU C Library is free software; you can redistribute it and/or 8 modify it under the terms of the GNU Lesser General Public 9 License as published by the Free Software Foundation; either 10 version 2.1 of the License, or (at your option) any later version. 11 12 The GNU C Library is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 Lesser General Public License for more details. 16 17 You should have received a copy of the GNU Lesser General Public 18 License along with the GNU C Library; if not, see 19 <https://www.gnu.org/licenses/>. */ 20 21 #ifndef _AARCH64_DL_TLSDESC_H 22 #define _AARCH64_DL_TLSDESC_H 1 23 24 /* Type used to represent a TLS descriptor in the GOT. */ 25 struct tlsdesc 26 { 27 ptrdiff_t (*entry) (struct tlsdesc *); 28 void *arg; 29 }; 30 31 typedef struct dl_tls_index 32 { 33 unsigned long int ti_module; 34 unsigned long int ti_offset; 35 } tls_index; 36 37 /* Type used as the argument in a TLS descriptor for a symbol that 38 needs dynamic TLS offsets. */ 39 struct tlsdesc_dynamic_arg 40 { 41 tls_index tlsinfo; 42 size_t gen_count; 43 }; 44 45 extern ptrdiff_t attribute_hidden 46 _dl_tlsdesc_return (struct tlsdesc *); 47 48 extern ptrdiff_t attribute_hidden 49 _dl_tlsdesc_undefweak (struct tlsdesc *); 50 51 # ifdef SHARED 52 extern void *_dl_make_tlsdesc_dynamic (struct link_map *, size_t); 53 54 extern ptrdiff_t attribute_hidden 55 _dl_tlsdesc_dynamic (struct tlsdesc *); 56 #endif 57 58 #endif 59