| /* Thread-local storage descriptor handling in the ELF dynamic linker. |
| x86_64 version. |
| Copyright (C) 2005-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <stdint.h> |
| |
| #ifndef _X86_64_DL_TLSDESC_H |
| # define _X86_64_DL_TLSDESC_H 1 |
| |
| /* Type used to represent a TLS descriptor in the GOT. */ |
| struct tlsdesc |
| { |
| /* Anonymous union is used here to ensure that GOT entry slot is always |
| 8 bytes for both x32 and x86-64. */ |
| union |
| { |
| ptrdiff_t (*entry) (struct tlsdesc *on_rax); |
| uint64_t entry_slot; |
| }; |
| union |
| { |
| void *arg; |
| uint64_t arg_slot; |
| }; |
| }; |
| |
| typedef struct dl_tls_index |
| { |
| uint64_t ti_module; |
| uint64_t ti_offset; |
| } tls_index; |
| |
| /* Type used as the argument in a TLS descriptor for a symbol that |
| needs dynamic TLS offsets. */ |
| struct tlsdesc_dynamic_arg |
| { |
| tls_index tlsinfo; |
| size_t gen_count; |
| }; |
| |
| extern ptrdiff_t attribute_hidden |
| _dl_tlsdesc_return(struct tlsdesc *on_rax), |
| _dl_tlsdesc_undefweak(struct tlsdesc *on_rax), |
| _dl_tlsdesc_resolve_rela(struct tlsdesc *on_rax), |
| _dl_tlsdesc_resolve_hold(struct tlsdesc *on_rax); |
| |
| # ifdef SHARED |
| extern void *internal_function _dl_make_tlsdesc_dynamic (struct link_map *map, |
| size_t ti_offset); |
| |
| extern ptrdiff_t attribute_hidden _dl_tlsdesc_dynamic(struct tlsdesc *); |
| # endif |
| |
| #endif |
