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authorWaldemar Brodkorb <wbx@openadk.org>2014-09-20 22:36:23 +0200
committerWaldemar Brodkorb <wbx@openadk.org>2014-09-22 20:35:40 +0200
commit4c3023bc803012656cf45749960282351efc8020 (patch)
tree979feef511fde3dbe564e5362e89a2e8b793909e /libpthread/nptl/sysdeps/xtensa/libc-tls.c
parent51f9b66d2fee1c7c1088b548751ac64131220b6e (diff)
xtensa: add support for NPTL
Changes from: https://github.com/foss-xtensa/uClibc/commits/xtensa_nptl Author: Chris Zankel <chris@zankel.net> Author: Baruch Siach <baruch@tkos.co.il>
Diffstat (limited to 'libpthread/nptl/sysdeps/xtensa/libc-tls.c')
-rw-r--r--libpthread/nptl/sysdeps/xtensa/libc-tls.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/xtensa/libc-tls.c b/libpthread/nptl/sysdeps/xtensa/libc-tls.c
new file mode 100644
index 000000000..80494c56f
--- /dev/null
+++ b/libpthread/nptl/sysdeps/xtensa/libc-tls.c
@@ -0,0 +1,36 @@
+/* Thread-local storage handling in the ELF dynamic linker. Xtensa version.
+ Copyright (C) 2005 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 <sysdeps/generic/libc-tls.c>
+#include <dl-tls.h>
+
+#if defined(USE_TLS) && USE_TLS
+
+/* On Xtensa, linker optimizations are not required, so __tls_get_addr
+ can be called even in statically linked binaries. In this case module
+ must be always 1 and PT_TLS segment exist in the binary, otherwise it
+ would not link. */
+
+void *
+__tls_get_addr (tls_index *ti)
+{
+ dtv_t *dtv = THREAD_DTV ();
+ return (char *) dtv[1].pointer.val + ti->ti_offset;
+}
+
+#endif