From 0b3366f6a93ac0f7e2028745ea557c0acd8722c6 Mon Sep 17 00:00:00 2001 From: "\"Steven J. Hill\"" Date: Sat, 7 May 2005 02:04:55 +0000 Subject: Import in NPTL code from glibc. For further information please consult the 'README.NPTL' file. --- libpthread/nptl_db/td_thr_tlsbase.c | 50 +++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 libpthread/nptl_db/td_thr_tlsbase.c (limited to 'libpthread/nptl_db/td_thr_tlsbase.c') diff --git a/libpthread/nptl_db/td_thr_tlsbase.c b/libpthread/nptl_db/td_thr_tlsbase.c new file mode 100644 index 000000000..c57009a73 --- /dev/null +++ b/libpthread/nptl_db/td_thr_tlsbase.c @@ -0,0 +1,50 @@ +/* Locate TLS data for a thread. + Copyright (C) 2003 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include "thread_dbP.h" + +td_err_e +td_thr_tlsbase (const td_thrhandle_t *th, + unsigned long int modid, + psaddr_t *base) +{ + td_err_e err; + psaddr_t dtv, dtvptr; + + if (modid < 1) + return TD_NOTLS; + + /* Get the DTV pointer from the thread descriptor. */ + err = DB_GET_FIELD (dtv, th->th_ta_p, th->th_unique, pthread, dtvp, 0); + if (err != TD_OK) + return err; + + /* Get the corresponding entry in the DTV. */ + err = DB_GET_FIELD (dtvptr, th->th_ta_p, dtv, dtv, dtv, modid); + if (err != TD_OK) + return err; + + /* It could be that the memory for this module is not allocated for + the given thread. */ + if ((uintptr_t) dtvptr & 1) + return TD_TLSDEFER; + + *base = dtvptr; + return TD_OK; +} -- cgit v1.2.3