1 /* Thread-local storage descriptor handling in the ELF dynamic linker. 2 i386 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; 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. 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 _I386_DL_TLSDESC_H 21 # define _I386_DL_TLSDESC_H 1 22 23 /* Type used to represent a TLS descriptor in the GOT. */ 24 struct tlsdesc 25 { 26 ptrdiff_t __attribute__ ((regparm (1))) (*entry) (struct tlsdesc *); 27 void *arg; 28 }; 29 30 typedef struct dl_tls_index 31 { 32 unsigned long int ti_module; 33 unsigned long int ti_offset; 34 } tls_index; 35 36 /* Type used as the argument in a TLS descriptor for a symbol that 37 needs dynamic TLS offsets. */ 38 struct tlsdesc_dynamic_arg 39 { 40 tls_index tlsinfo; 41 size_t gen_count; 42 }; 43 44 extern ptrdiff_t attribute_hidden __attribute__ ((regparm (1))) 45 _dl_tlsdesc_return (struct tlsdesc *), 46 _dl_tlsdesc_undefweak (struct tlsdesc *); 47 48 # ifdef SHARED 49 extern void *_dl_make_tlsdesc_dynamic (struct link_map *map, 50 size_t ti_offset) attribute_hidden; 51 52 extern ptrdiff_t attribute_hidden __attribute__ ((regparm (1))) 53 _dl_tlsdesc_dynamic (struct tlsdesc *); 54 # endif 55 56 #endif 57