| /* Thread-local storage handling in the ELF dynamic linker. i386 version. |
| Copyright (C) 2002-2016 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/>. */ |
| |
| |
| /* Type used for the representation of TLS information in the GOT. */ |
| typedef struct dl_tls_index |
| { |
| unsigned long int ti_module; |
| unsigned long int ti_offset; |
| } tls_index; |
| |
| |
| #ifdef SHARED |
| /* This is the prototype for the GNU version. */ |
| extern void *___tls_get_addr (tls_index *ti) |
| __attribute__ ((__regparm__ (1))); |
| extern void *___tls_get_addr_internal (tls_index *ti) |
| __attribute__ ((__regparm__ (1))) attribute_hidden; |
| |
| # if IS_IN (rtld) |
| /* The special thing about the x86 TLS ABI is that we have two |
| variants of the __tls_get_addr function with different calling |
| conventions. The GNU version, which we are mostly concerned here, |
| takes the parameter in a register. The name is changed by adding |
| an additional underscore at the beginning. The Sun version uses |
| the normal calling convention. */ |
| void * |
| __tls_get_addr (tls_index *ti) |
| { |
| return ___tls_get_addr_internal (ti); |
| } |
| |
| |
| /* Prepare using the definition of __tls_get_addr in the generic |
| version of this file. */ |
| # define __tls_get_addr __attribute__ ((__regparm__ (1))) ___tls_get_addr |
| strong_alias (___tls_get_addr, ___tls_get_addr_internal) |
| rtld_hidden_proto (___tls_get_addr) |
| rtld_hidden_def (___tls_get_addr) |
| #else |
| |
| /* Users should get the better interface. */ |
| # define __tls_get_addr ___tls_get_addr |
| |
| # endif |
| #endif |
| |
| /* Value used for dtv entries for which the allocation is delayed. */ |
| #define TLS_DTV_UNALLOCATED ((void *) -1l) |