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glibc  2.9
td_thr_tls_get_addr.c
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00001 /* Get address of thread local variable.
00002    Copyright (C) 2002,2003 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004    Contributed by Ulrich Drepper <drepper@cygnus.com>, 2002.
00005 
00006    The GNU C Library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Lesser General Public
00008    License as published by the Free Software Foundation; either
00009    version 2.1 of the License, or (at your option) any later version.
00010 
00011    The GNU C Library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Lesser General Public License for more details.
00015 
00016    You should have received a copy of the GNU Lesser General Public
00017    License along with the GNU C Library; if not, write to the Free
00018    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00019    02111-1307 USA.  */
00020 
00021 #include <link.h>
00022 #include "thread_dbP.h"
00023 
00024 td_err_e
00025 td_thr_tls_get_addr (const td_thrhandle_t *th,
00026                    psaddr_t map_address, size_t offset, psaddr_t *address)
00027 {
00028   td_err_e err;
00029   psaddr_t modid;
00030 
00031   /* Get the TLS module ID from the `struct link_map' in the inferior.  */
00032   err = DB_GET_FIELD (modid, th->th_ta_p, map_address, link_map,
00033                     l_tls_modid, 0);
00034   if (err == TD_NOCAPAB)
00035     return TD_NOAPLIC;
00036   if (err == TD_OK)
00037     {
00038       err = td_thr_tlsbase (th, (uintptr_t) modid, address);
00039       if (err == TD_OK)
00040        *address += offset;
00041     }
00042   return err;
00043 }