obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 182 insertions, 0 deletions

diff --git a/libstdc++-v3/libsupc++/eh_arm.cc b/libstdc++-v3/libsupc++/eh_arm.cc
new file mode 100644
index 000000000..f0acb705e
--- /dev/null
+++ b/libstdc++-v3/libsupc++/eh_arm.cc
@@ -0,0 +1,182 @@
+// -*- C++ -*- ARM specific Exception handling support routines.
+// Copyright (C) 2004, 2005, 2008, 2009, 2010 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC 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.
+//
+// GCC 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/>.
+
+#include <cxxabi.h>
+#include "unwind-cxx.h"
+
+#ifdef __ARM_EABI_UNWINDER__
+
+using namespace __cxxabiv1;
+
+
+// Given the thrown type THROW_TYPE, pointer to a variable containing a
+// pointer to the exception object THROWN_PTR_P and a type CATCH_TYPE to
+// compare against, return whether or not there is a match and if so,
+// update *THROWN_PTR_P.
+
+extern "C" __cxa_type_match_result
+__cxa_type_match(_Unwind_Exception* ue_header,
+		 const std::type_info* catch_type,
+		 bool is_reference __attribute__((__unused__)),
+		 void** thrown_ptr_p)
+{
+  bool forced_unwind = __is_gxx_forced_unwind_class(ue_header->exception_class);
+  bool foreign_exception = !forced_unwind && !__is_gxx_exception_class(ue_header->exception_class);
+  bool dependent_exception =
+    __is_dependent_exception(ue_header->exception_class);
+  __cxa_exception* xh = __get_exception_header_from_ue(ue_header);
+  __cxa_dependent_exception *dx = __get_dependent_exception_from_ue(ue_header);
+  const std::type_info* throw_type;
+
+  if (forced_unwind)
+    throw_type = &typeid(abi::__forced_unwind);
+  else if (foreign_exception)
+    throw_type = &typeid(abi::__foreign_exception);
+  else if (dependent_exception)
+    throw_type = __get_exception_header_from_obj
+      (dx->primaryException)->exceptionType;
+  else
+    throw_type = xh->exceptionType;
+
+  void* thrown_ptr = *thrown_ptr_p;
+
+  // Pointer types need to adjust the actual pointer, not
+  // the pointer to pointer that is the exception object.
+  // This also has the effect of passing pointer types
+  // "by value" through the __cxa_begin_catch return value.
+  if (throw_type->__is_pointer_p())
+    thrown_ptr = *(void**) thrown_ptr;
+
+  if (catch_type->__do_catch(throw_type, &thrown_ptr, 1))
+    {
+      *thrown_ptr_p = thrown_ptr;
+
+      if (typeid(*catch_type) == typeid (typeid(void*)))
+	{
+	  const __pointer_type_info *catch_pointer_type =
+	    static_cast<const __pointer_type_info *> (catch_type);
+	  const __pointer_type_info *throw_pointer_type =
+	    static_cast<const __pointer_type_info *> (throw_type);
+
+	  if (typeid (*catch_pointer_type->__pointee) != typeid (void)
+	      && (*catch_pointer_type->__pointee != 
+		  *throw_pointer_type->__pointee))
+	    return ctm_succeeded_with_ptr_to_base;
+	}
+
+      return ctm_succeeded;
+    }
+
+  return ctm_failed;
+}
+
+// ABI defined routine called at the start of a cleanup handler.
+extern "C" bool
+__cxa_begin_cleanup(_Unwind_Exception* ue_header)
+{
+  __cxa_eh_globals *globals = __cxa_get_globals();
+  __cxa_exception *header = __get_exception_header_from_ue(ue_header);
+  bool native = __is_gxx_exception_class(header->unwindHeader.exception_class);
+
+
+  if (native)
+    {
+      header->propagationCount++;
+      // Add it to the chain if this is the first time we've seen this
+      // exception.
+      if (header->propagationCount == 1)
+	{
+	  header->nextPropagatingException = globals->propagatingExceptions;
+	  globals->propagatingExceptions = header;
+	}
+    }
+  else
+    {
+      // Remember the exception object, so end_cleanup can return it.
+      // These cannot be stacked, so we must abort if we already have
+      // a propagating exception.
+      if (globals->propagatingExceptions)
+	std::terminate ();
+      globals->propagatingExceptions = header;
+    }
+
+  return true;
+}
+
+// Do the work for __cxa_end_cleanup.  Returns the currently propagating
+// exception object.
+extern "C" _Unwind_Exception *
+__gnu_end_cleanup(void)
+{
+  __cxa_exception *header;
+  __cxa_eh_globals *globals = __cxa_get_globals();
+
+  header = globals->propagatingExceptions;
+
+  // Check something hasn't gone horribly wrong.
+  if (!header)
+    std::terminate();
+
+  if (__is_gxx_exception_class(header->unwindHeader.exception_class))
+    {
+      header->propagationCount--;
+      if (header->propagationCount == 0)
+	{
+	  // Remove exception from chain.
+	  globals->propagatingExceptions = header->nextPropagatingException;
+	  header->nextPropagatingException = NULL;
+	}
+    }
+  else
+    globals->propagatingExceptions = NULL;
+
+  return &header->unwindHeader;
+}
+
+// Assembly wrapper to call __gnu_end_cleanup without clobbering r1-r3.
+// Also push r4 to preserve stack alignment.
+#ifdef __thumb__
+asm ("  .pushsection .text.__cxa_end_cleanup\n"
+"	.global __cxa_end_cleanup\n"
+"	.type __cxa_end_cleanup, \"function\"\n"
+"	.thumb_func\n"
+"__cxa_end_cleanup:\n"
+"	push\t{r1, r2, r3, r4}\n"
+"	bl\t__gnu_end_cleanup\n"
+"	pop\t{r1, r2, r3, r4}\n"
+"	bl\t_Unwind_Resume @ Never returns\n"
+"	.popsection\n");
+#else
+asm ("  .pushsection .text.__cxa_end_cleanup\n"
+"	.global __cxa_end_cleanup\n"
+"	.type __cxa_end_cleanup, \"function\"\n"
+"__cxa_end_cleanup:\n"
+"	stmfd\tsp!, {r1, r2, r3, r4}\n"
+"	bl\t__gnu_end_cleanup\n"
+"	ldmfd\tsp!, {r1, r2, r3, r4}\n"
+"	bl\t_Unwind_Resume @ Never returns\n"
+"	.popsection\n");
+#endif
+
+#endif