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-rw-r--r--sysdeps/generic/ldsodefs.h5
-rw-r--r--sysdeps/nptl/dl-tls_init_tp.c30
2 files changed, 35 insertions, 0 deletions
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index dfc117a445..67c6686015 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -1163,6 +1163,11 @@ extern void _dl_determine_tlsoffset (void) attribute_hidden;
number of audit modules are loaded. */
void _dl_tls_static_surplus_init (size_t naudit) attribute_hidden;
+/* This function is called after processor-specific initialization of
+ the TCB and thread pointer via TLS_INIT_TP, to complete very early
+ initialization of the thread library. */
+void __tls_init_tp (void) attribute_hidden;
+
#ifndef SHARED
/* Set up the TCB for statically linked applications. This is called
early during startup because we always use TLS (for errno and the
diff --git a/sysdeps/nptl/dl-tls_init_tp.c b/sysdeps/nptl/dl-tls_init_tp.c
new file mode 100644
index 0000000000..8983808233
--- /dev/null
+++ b/sysdeps/nptl/dl-tls_init_tp.c
@@ -0,0 +1,30 @@
+/* Completion of TCB initialization after TLS_INIT_TP. NPTL version.
+ Copyright (C) 2020-2021 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/>. */
+
+#include <ldsodefs.h>
+#include <list.h>
+#include <tls.h>
+
+void
+__tls_init_tp (void)
+{
+ /* Set up thread stack list management. */
+ INIT_LIST_HEAD (&GL (dl_stack_used));
+ INIT_LIST_HEAD (&GL (dl_stack_user));
+ list_add (&THREAD_SELF->list, &GL (dl_stack_user));
+}