riscv32: add basic support for NPTL

1 files changed, 34 insertions, 0 deletions

diff --git a/libpthread/nptl/sysdeps/riscv32/libc-tls.c b/libpthread/nptl/sysdeps/riscv32/libc-tls.c
new file mode 100644
index 000000000..8c601c06d
--- /dev/null
+++ b/libpthread/nptl/sysdeps/riscv32/libc-tls.c
@@ -0,0 +1,34 @@
+/* Copyright (C) 2005-2016 Free Software Foundation, Inc.
+
+   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>
+
+/* On RISC-V 32, 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.  */
+
+#if defined(USE_TLS) && USE_TLS
+
+void *
+__tls_get_addr (tls_index *ti)
+{
+  dtv_t *dtv = THREAD_DTV ();
+  return (char *) dtv[1].pointer.val + ti->ti_offset;
+}
+
+#endif