Relocate AArch64 from ports to libc.

This patch moves the AArch64 port to the main sysdeps hierarchy.  The
move is essentially:

  git mv ports/sysdeps/aarch64 sysdeps/aarch64
  git mv ports/sysdeps/unix/sysv/linux/aarch64 sysdeps/unix/sysv/linux/aarch64

The README is updated and I've updated ChangeLog.aarch64 along the
lines of the ARM move.  The AArch64 build has been tested to confirm
that there were no changes in objdump -dr output or the shared
objects.

1 files changed, 65 insertions, 0 deletions

diff --git a/sysdeps/aarch64/dl-tlsdesc.h b/sysdeps/aarch64/dl-tlsdesc.h
new file mode 100644
index 0000000000..5ff1f74177
--- /dev/null
+++ b/sysdeps/aarch64/dl-tlsdesc.h
@@ -0,0 +1,65 @@
+/* Thread-local storage descriptor handling in the ELF dynamic linker.
+   AArch64 version.
+   Copyright (C) 2011-2014 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/>.  */
+
+#ifndef _AARCH64_DL_TLSDESC_H
+#define _AARCH64_DL_TLSDESC_H 1
+
+/* Type used to represent a TLS descriptor in the GOT.  */
+struct tlsdesc
+{
+  ptrdiff_t (*entry) (struct tlsdesc *);
+  void *arg;
+};
+
+typedef struct dl_tls_index
+{
+  unsigned long int ti_module;
+  unsigned long int ti_offset;
+} tls_index;
+
+/* Type used as the argument in a TLS descriptor for a symbol that
+   needs dynamic TLS offsets.  */
+struct tlsdesc_dynamic_arg
+{
+  tls_index tlsinfo;
+  size_t gen_count;
+};
+
+extern ptrdiff_t attribute_hidden
+_dl_tlsdesc_return (struct tlsdesc *);
+
+extern ptrdiff_t attribute_hidden
+_dl_tlsdesc_undefweak (struct tlsdesc *);
+
+extern ptrdiff_t attribute_hidden
+_dl_tlsdesc_resolve_rela (struct tlsdesc *);
+
+extern ptrdiff_t attribute_hidden
+_dl_tlsdesc_resolve_hold (struct tlsdesc *);
+
+# ifdef SHARED
+extern void *internal_function _dl_make_tlsdesc_dynamic (struct link_map *,
+							 size_t);
+
+extern ptrdiff_t attribute_hidden
+_dl_tlsdesc_dynamic (struct tlsdesc *);
+#endif
+
+#endif