[binutils] Bump binutils to 2.20.1

binutils/gas/config/te-solaris.h

-/* Copyright 2008 Free Software Foundation, Inc.
+/* Copyright 2008, 2010 Free Software Foundation, Inc.
 
    This file is part of GAS, the GNU Assembler.
 
    GAS 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.
 
    GAS 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.
 
    You should have received a copy of the GNU General Public License
    along with GAS; see the file COPYING.  If not, write to the Free
    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
    02110-1301, USA.  */
 
 #define TE_SOLARIS
 
 #define LOCAL_LABELS_DOLLAR 1
 #define LOCAL_LABELS_FB 1
 
+#include "obj-format.h"
+
 /* The Sun linker doesn't merge read-only and read-write sections into
-   a single read-write section so we must force all EH frame sections
-   to be read-write.  */
-#define DWARF2_EH_FRAME_READ_ONLY 0
+   a single section so we must force all EH frame sections to use the
+   same flags.  For SPARC and 32-bit i386 this is read-write, whilst
+   for x86_64 this is read-only, matching GCC behavior.
 
-#include "obj-format.h"
+   See the definition of EH_TABLES_CAN_BE_READ_ONLY in
+   gcc/config/i386/sol2.h in the GCC sources and the thread starting at
+   http://sourceware.org/ml/binutils/2010-01/msg00401.html.  */
+#ifdef TC_SPARC
+#define DWARF2_EH_FRAME_READ_ONLY SEC_NO_FLAGS
+#else
+#define DWARF2_EH_FRAME_READ_ONLY \
+  (bfd_get_arch_size (stdoutput) == 64 ? SEC_READONLY : SEC_NO_FLAGS)
+#endif