1 files changed, 72 insertions, 0 deletions
diff --git a/cpukit/score/src/tlsallocsize.c b/cpukit/score/src/tlsallocsize.c
new file mode 100644
index 0000000000..046579814a
--- /dev/null
+++ b/cpukit/score/src/tlsallocsize.c
@@ -0,0 +1,72 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (C) 2014, 2019 embedded brains GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/score/tls.h>
+
+static uintptr_t _TLS_Allocation_size;
+
+uintptr_t _TLS_Get_allocation_size( void )
+{
+  uintptr_t size;
+  uintptr_t allocation_size;
+  uintptr_t alignment;
+
+  size = _TLS_Get_size();
+
+  if ( size == 0 ) {
+    return 0;
+  }
+
+  allocation_size = _TLS_Allocation_size;
+
+  if ( allocation_size == 0 ) {
+    allocation_size = _TLS_Heap_align_up( size );
+    alignment = _TLS_Heap_align_up( (uintptr_t) _TLS_Alignment );
+
+    /*
+     * The stack allocator does not support aligned allocations.  Allocate
+     * enough to do the alignment manually.
+     */
+    if ( alignment > CPU_HEAP_ALIGNMENT ) {
+      allocation_size += alignment;
+    }
+
+    allocation_size += _TLS_Get_thread_control_block_area_size( alignment );
+
+#ifndef __i386__
+    allocation_size += sizeof(TLS_Dynamic_thread_vector);
+#endif
+
+    _TLS_Allocation_size = allocation_size;
+  }
+
+  return allocation_size;
+}