or1k: Thread Local Storage support

OpenRISC includes 3 TLS addressing models.  Local Dynamic optimizations
are not done in the linker and therefore use the same code sequences as
Global Dynamic.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/sysdeps/or1k/dl-tls.h b/sysdeps/or1k/dl-tls.h
new file mode 100644
index 0000000000..9fab9832d2
--- /dev/null
+++ b/sysdeps/or1k/dl-tls.h
@@ -0,0 +1,27 @@
+/* TLS definitions for the ELF dynamic linker.  OpenRISC version.
+   Copyright (C) 2022 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
+   <https://www.gnu.org/licenses/>.  */
+
+/* Type used for the representation of TLS information in the GOT.  */
+typedef struct
+{
+  unsigned long int ti_module;
+  unsigned long int ti_offset;
+} tls_index;
+
+extern void *__tls_get_addr (tls_index *ti);