2006-01-06 Paolo Carlini <pcarlini@suse.de>

[pf3gnuchains/gcc-fork.git] / libstdc++-v3 / libsupc++ / unwind-cxx.h

diff --git a/libstdc++-v3/libsupc++/unwind-cxx.h b/libstdc++-v3/libsupc++/unwind-cxx.h
index 4fa4b41..c563655 100644 (file)
--- a/libstdc++-v3/libsupc++/unwind-cxx.h
+++ b/libstdc++-v3/libsupc++/unwind-cxx.h
@@ -15,8 +15,8 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with GCC; see the file COPYING.  If not, write to
-// the Free Software Foundation, 59 Temple Place - Suite 330,
-// Boston, MA 02111-1307, USA.
+// the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+// Boston, MA 02110-1301, USA.
 
 // As a special exception, you may use this file as part of a free software
 // library without restriction.  Specifically, if other files instantiate
@@ -38,8 +38,6 @@
 #include <typeinfo>
 #include <exception>
 #include <cstddef>
-#include <cstdlib>
-#define gcc_unreachable() std::abort()
 #include "unwind.h"
 
 #pragma GCC visibility push(default)
@@ -69,6 +67,13 @@ struct __cxa_exception
   // value is a signal that this object has been rethrown.
   int handlerCount;
 
+#ifdef __ARM_EABI_UNWINDER__
+  // Stack of exceptions in cleanups.
+  __cxa_exception* nextPropagatingException;
+
+  // The nuber of active cleanup handlers for this exception.
+  int propagationCount;
+#else
   // Cache parsed handler data from the personality routine Phase 1
   // for Phase 2 and __cxa_call_unexpected.
   int handlerSwitchValue;
@@ -76,6 +81,7 @@ struct __cxa_exception
   const unsigned char *languageSpecificData;
   _Unwind_Ptr catchTemp;
   void *adjustedPtr;
+#endif
 
   // The generic exception header.  Must be last.
   _Unwind_Exception unwindHeader;
@@ -86,6 +92,9 @@ struct __cxa_eh_globals
 {
   __cxa_exception *caughtExceptions;
   unsigned int uncaughtExceptions;
+#ifdef __ARM_EABI_UNWINDER__
+  __cxa_exception* propagatingExceptions;
+#endif
 };
 
 
@@ -124,6 +133,20 @@ extern "C" void __cxa_bad_typeid ();
 // throws, and if bad_exception needs to be thrown.  Called from the
 // compiler.
 extern "C" void __cxa_call_unexpected (void *) __attribute__((noreturn));
+extern "C" void __cxa_call_terminate (void*) __attribute__((noreturn));
+
+#ifdef __ARM_EABI_UNWINDER__
+// Arm EABI specified routines.
+typedef enum {
+  ctm_failed = 0,
+  ctm_succeeded = 1,
+  ctm_succeeded_with_ptr_to_base = 2
+} __cxa_type_match_result;
+extern "C" bool __cxa_type_match(_Unwind_Exception*, const std::type_info*,
+                                bool, void**);
+extern "C" void __cxa_begin_cleanup (_Unwind_Exception*);
+extern "C" void __cxa_end_cleanup (void);
+#endif
 
 // Invokes given handler, dying appropriately if the user handler was
 // so inconsiderate as to return.
@@ -136,6 +159,54 @@ extern std::unexpected_handler __unexpected_handler;
 
 // These are explicitly GNU C++ specific.
 
+// Acquire the C++ exception header from the C++ object.
+static inline __cxa_exception *
+__get_exception_header_from_obj (void *ptr)
+{
+  return reinterpret_cast<__cxa_exception *>(ptr) - 1;
+}
+
+// Acquire the C++ exception header from the generic exception header.
+static inline __cxa_exception *
+__get_exception_header_from_ue (_Unwind_Exception *exc)
+{
+  return reinterpret_cast<__cxa_exception *>(exc + 1) - 1;
+}
+
+#ifdef __ARM_EABI_UNWINDER__
+static inline bool
+__is_gxx_exception_class(_Unwind_Exception_Class c)
+{
+  // TODO: Take advantage of the fact that c will always be word aligned.
+  return c[0] == 'G'
+        && c[1] == 'N'
+        && c[2] == 'U'
+        && c[3] == 'C'
+        && c[4] == 'C'
+        && c[5] == '+'
+        && c[6] == '+'
+        && c[7] == '\0';
+}
+
+static inline void
+__GXX_INIT_EXCEPTION_CLASS(_Unwind_Exception_Class c)
+{
+  c[0] = 'G';
+  c[1] = 'N';
+  c[2] = 'U';
+  c[3] = 'C';
+  c[4] = 'C';
+  c[5] = '+';
+  c[6] = '+';
+  c[7] = '\0';
+}
+
+static inline void*
+__gxx_caught_object(_Unwind_Exception* eo)
+{
+  return (void*)eo->barrier_cache.bitpattern[0];
+}
+#else // !__ARM_EABI_UNWINDER__
 // This is the exception class we report -- "GNUCC++\0".
 const _Unwind_Exception_Class __gxx_exception_class
 = ((((((((_Unwind_Exception_Class) 'G' 
@@ -147,6 +218,14 @@ const _Unwind_Exception_Class __gxx_exception_class
     << 8 | (_Unwind_Exception_Class) '+')
    << 8 | (_Unwind_Exception_Class) '\0');
 
+static inline bool
+__is_gxx_exception_class(_Unwind_Exception_Class c)
+{
+  return c == __gxx_exception_class;
+}
+
+#define __GXX_INIT_EXCEPTION_CLASS(c) c = __gxx_exception_class
+
 // GNU C++ personality routine, Version 0.
 extern "C" _Unwind_Reason_Code __gxx_personality_v0
      (int, _Unwind_Action, _Unwind_Exception_Class,
@@ -157,19 +236,13 @@ extern "C" _Unwind_Reason_Code __gxx_personality_sj0
      (int, _Unwind_Action, _Unwind_Exception_Class,
       struct _Unwind_Exception *, struct _Unwind_Context *);
 
-// Acquire the C++ exception header from the C++ object.
-static inline __cxa_exception *
-__get_exception_header_from_obj (void *ptr)
+static inline void*
+__gxx_caught_object(_Unwind_Exception* eo)
 {
-  return reinterpret_cast<__cxa_exception *>(ptr) - 1;
-}
-
-// Acquire the C++ exception header from the generic exception header.
-static inline __cxa_exception *
-__get_exception_header_from_ue (_Unwind_Exception *exc)
-{
-  return reinterpret_cast<__cxa_exception *>(exc + 1) - 1;
+  __cxa_exception* header = __get_exception_header_from_ue (eo);
+  return header->adjustedPtr;
 }
+#endif // !__ARM_EABI_UNWINDER__
 
 } /* namespace __cxxabiv1 */