@@ -99,6 +99,9 @@ error_constants_dir="os/generic"
# variants into the established source config/cpu/* sub-directories.
# THIS TABLE IS SORTED. KEEP IT THAT WAY.
case "${host_cpu}" in
+ aarch64*)
+ try_cpu=aarch64
+ ;;
alpha*)
try_cpu=alpha
;;
@@ -0,0 +1,60 @@
+// Control various target specific ABI tweaks. AArch64 version.
+
+// Copyright (C) 2004, 2006, 2008, 2009, 2011, 2012
+// Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This 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 General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file cxxabi_tweaks.h
+ * The header provides an CPU-variable interface to the C++ ABI.
+ */
+
+#ifndef _CXXABI_TWEAKS_H
+#define _CXXABI_TWEAKS_H 1
+
+#ifdef __cplusplus
+namespace __cxxabiv1
+{
+ extern "C"
+ {
+#endif
+
+ // The AArch64 ABI uses the least significant bit of a 64-bit
+ // guard variable.
+#define _GLIBCXX_GUARD_TEST(x) ((*(x) & 1) != 0)
+#define _GLIBCXX_GUARD_SET(x) *(x) = 1
+#define _GLIBCXX_GUARD_BIT 1
+#define _GLIBCXX_GUARD_PENDING_BIT __guard_test_bit (1, 1)
+#define _GLIBCXX_GUARD_WAITING_BIT __guard_test_bit (2, 1)
+ __extension__ typedef int __guard __attribute__((mode (__DI__)));
+
+ // __cxa_vec_ctor has void return type.
+ typedef void __cxa_vec_ctor_return_type;
+#define _GLIBCXX_CXA_VEC_CTOR_RETURN(x) return
+ // Constructors and destructors do not return a value.
+ typedef void __cxa_cdtor_return_type;
+
+#ifdef __cplusplus
+ }
+} // namespace __cxxabiv1
+#endif
+
+#endif
This patch provides the AArch64 libstdc++-v3 port, it contains both the required configury adjustment to config.host and the new file introduced by the AArch64 port. Proposed ChangeLog: * config/cpu/aarch64/cxxabi_tweaks.h: New file. * configure.host: Enable aarch64.