/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 2002. 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ /* The "thread register" gets initialized from a segment descriptor. Initialize such a descriptor first. */ #define PREPARE_CREATE \ union user_desc_init desc; \ \ /* Describe the thread-local storage segment. */ \ \ /* The 'entry_number' field. The first three bits of the segment \ register value select the GDT, ignore them. We get the index \ from the value of the %gs register in the current thread. */ \ desc.vals[0] = TLS_GET_GS () >> 3; \ /* The 'base_addr' field. Pointer to the TCB. */ \ desc.vals[1] = (unsigned long int) pd; \ /* The 'limit' field. We use 4GB which is 0xfffff pages. */ \ desc.vals[2] = 0xfffff; \ /* Collapsed value of the bitfield: \ .seg_32bit = 1 \ .contents = 0 \ .read_exec_only = 0 \ .limit_in_pages = 1 \ .seg_not_present = 0 \ .useable = 1 */ \ desc.vals[3] = 0x51 /* Value passed to 'clone' for initialization of the thread register. */ #define TLS_VALUE &desc.desc /* Get the real implementation. */ #include