Patchwork [10/10] AArch64 Port

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Submitter Marcus Shawcroft
Date Oct. 23, 2012, 9:43 a.m.
Message ID <508666A7.2000005@arm.com>
Download mbox | patch
Permalink /patch/193411/
State New
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Comments

Marcus Shawcroft - Oct. 23, 2012, 9:43 a.m.
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.
Jeff Law - Oct. 23, 2012, 3:42 p.m.
On 10/23/2012 03:43 AM, Marcus Shawcroft wrote:
> 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.
This is fine.  Thanks.

Jeff

Patch

diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
index ed9e72109d41774c179190d9546b53d0dd4feef1..af5d3ffbff48eb82dd85ef55c290a3e5d2be9f89 100644
--- a/libstdc++-v3/configure.host
+++ b/libstdc++-v3/configure.host
@@ -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
     ;;
diff --git a/libstdc++-v3/config/cpu/aarch64/cxxabi_tweaks.h b/libstdc++-v3/config/cpu/aarch64/cxxabi_tweaks.h
index ...31a423f4fd56bffaead1d1f2b0057cdb80cda1fb 100644
--- a/libstdc++-v3/config/cpu/aarch64/cxxabi_tweaks.h
+++ b/libstdc++-v3/config/cpu/aarch64/cxxabi_tweaks.h
@@ -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