view sources/patches/uClibc++-unwind-cxx.patch @ 1439:d2b121fc1567

Use the ext4 driver for ext3 and ext2 filesystems.
author Rob Landley <rob@landley.net>
date Sat, 10 Sep 2011 08:03:10 -0500
parents b4a9c0084f2f
children
line wrap: on
line source

--- a/include/unwind-cxx.h	2007-06-03 17:51:12.000000000 -0500
+++ b/include/unwind-cxx.h	2005-08-16 21:28:44.000000000 -0500
@@ -1,175 +1,251 @@
-// -*- C++ -*- Exception handling and frame unwind runtime interface routines.
-// Copyright (C) 2001 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 2, 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.
-//
-// 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.
-
-// As a special exception, you may use this file as part of a free software
-// library without restriction.  Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License.  This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
-
-// This is derived from the C++ ABI for IA-64.  Where we diverge
-// for cross-architecture compatibility are noted with "@@@".
-
-#ifndef _UNWIND_CXX_H
-#define _UNWIND_CXX_H 1
-
-// Level 2: C++ ABI
-
-#include <typeinfo>
-#include <exception>
-#include <cstddef>
-#include "unwind.h"
-
-#pragma GCC visibility push(default)
-
-namespace __cxxabiv1
-{
-
-// A C++ exception object consists of a header, which is a wrapper around
-// an unwind object header with additional C++ specific information,
-// followed by the exception object itself.
-
-struct __cxa_exception
-{ 
-  // Manage the exception object itself.
-  std::type_info *exceptionType;
-  void (*exceptionDestructor)(void *); 
-
-  // The C++ standard has entertaining rules wrt calling set_terminate
-  // and set_unexpected in the middle of the exception cleanup process.
-  std::unexpected_handler unexpectedHandler;
-  std::terminate_handler terminateHandler;
-
-  // The caught exception stack threads through here.
-  __cxa_exception *nextException;
-
-  // How many nested handlers have caught this exception.  A negated
-  // value is a signal that this object has been rethrown.
-  int handlerCount;
-
-  // Cache parsed handler data from the personality routine Phase 1
-  // for Phase 2 and __cxa_call_unexpected.
-  int handlerSwitchValue;
-  const unsigned char *actionRecord;
-  const unsigned char *languageSpecificData;
-  _Unwind_Ptr catchTemp;
-  void *adjustedPtr;
-
-  // The generic exception header.  Must be last.
-  _Unwind_Exception unwindHeader;
-};
-
-// Each thread in a C++ program has access to a __cxa_eh_globals object.
-struct __cxa_eh_globals
-{
-  __cxa_exception *caughtExceptions;
-  unsigned int uncaughtExceptions;
-};
-
-
-// The __cxa_eh_globals for the current thread can be obtained by using
-// either of the following functions.  The "fast" version assumes at least
-// one prior call of __cxa_get_globals has been made from the current
-// thread, so no initialization is necessary.
-extern "C" __cxa_eh_globals *__cxa_get_globals () throw();
-extern "C" __cxa_eh_globals *__cxa_get_globals_fast () throw();
-
-// Allocate memory for the exception plus the thown object.
-extern "C" void *__cxa_allocate_exception(std::size_t thrown_size) throw();
-
-// Free the space allocated for the exception.
-extern "C" void __cxa_free_exception(void *thrown_exception) throw();
-
-// Throw the exception.
-extern "C" void __cxa_throw (void *thrown_exception,
-			     std::type_info *tinfo,
-			     void (*dest) (void *))
-     __attribute__((noreturn));
-
-// Used to implement exception handlers.
-extern "C" void *__cxa_begin_catch (void *) throw();
-extern "C" void __cxa_end_catch ();
-extern "C" void __cxa_rethrow () __attribute__((noreturn));
-
-// These facilitate code generation for recurring situations.
-extern "C" void __cxa_bad_cast ();
-extern "C" void __cxa_bad_typeid ();
-
-// @@@ These are not directly specified by the IA-64 C++ ABI.
-
-// Handles re-checking the exception specification if unexpectedHandler
-// throws, and if bad_exception needs to be thrown.  Called from the
-// compiler.
-extern "C" void __cxa_call_unexpected (void *) __attribute__((noreturn));
-
-// Invokes given handler, dying appropriately if the user handler was
-// so inconsiderate as to return.
-extern void __terminate(std::terminate_handler) __attribute__((noreturn));
-extern void __unexpected(std::unexpected_handler) __attribute__((noreturn));
-
-// The current installed user handlers.
-extern std::terminate_handler __terminate_handler;
-extern std::unexpected_handler __unexpected_handler;
-
-// These are explicitly GNU C++ specific.
-
-// This is the exception class we report -- "GNUCC++\0".
-const _Unwind_Exception_Class __gxx_exception_class
-= ((((((((_Unwind_Exception_Class) 'G' 
-	 << 8 | (_Unwind_Exception_Class) 'N')
-	<< 8 | (_Unwind_Exception_Class) 'U')
-       << 8 | (_Unwind_Exception_Class) 'C')
-      << 8 | (_Unwind_Exception_Class) 'C')
-     << 8 | (_Unwind_Exception_Class) '+')
-    << 8 | (_Unwind_Exception_Class) '+')
-   << 8 | (_Unwind_Exception_Class) '\0');
-
-// GNU C++ personality routine, Version 0.
-extern "C" _Unwind_Reason_Code __gxx_personality_v0
-     (int, _Unwind_Action, _Unwind_Exception_Class,
-      struct _Unwind_Exception *, struct _Unwind_Context *);
-
-// GNU C++ sjlj personality routine, Version 0.
-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)
-{
-  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;
-}
-
-} /* namespace __cxxabiv1 */
-
-#pragma GCC visibility pop
-
-#endif // _UNWIND_CXX_H
+// -*- C++ -*- Exception handling and frame unwind runtime interface routines.
+// Copyright (C) 2001 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 2, 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.
+//
+// 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, 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
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+// This is derived from the C++ ABI for IA-64.  Where we diverge
+// for cross-architecture compatibility are noted with "@@@".
+
+#ifndef _UNWIND_CXX_H
+#define _UNWIND_CXX_H 1
+
+// Level 2: C++ ABI
+
+#include <typeinfo>
+#include <exception>
+#include <cstddef>
+#include "unwind.h"
+
+#pragma GCC visibility push(default)
+
+namespace __cxxabiv1
+{
+
+// A C++ exception object consists of a header, which is a wrapper around
+// an unwind object header with additional C++ specific information,
+// followed by the exception object itself.
+
+struct __cxa_exception
+{ 
+  // Manage the exception object itself.
+  std::type_info *exceptionType;
+  void (*exceptionDestructor)(void *); 
+
+  // The C++ standard has entertaining rules wrt calling set_terminate
+  // and set_unexpected in the middle of the exception cleanup process.
+  std::unexpected_handler unexpectedHandler;
+  std::terminate_handler terminateHandler;
+
+  // The caught exception stack threads through here.
+  __cxa_exception *nextException;
+
+  // How many nested handlers have caught this exception.  A negated
+  // 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;
+  const unsigned char *actionRecord;
+  const unsigned char *languageSpecificData;
+  _Unwind_Ptr catchTemp;
+  void *adjustedPtr;
+#endif
+
+  // The generic exception header.  Must be last.
+  _Unwind_Exception unwindHeader;
+};
+
+// Each thread in a C++ program has access to a __cxa_eh_globals object.
+struct __cxa_eh_globals
+{
+  __cxa_exception *caughtExceptions;
+  unsigned int uncaughtExceptions;
+#ifdef __ARM_EABI_UNWINDER__
+  __cxa_exception* propagatingExceptions;
+#endif
+};
+
+
+// The __cxa_eh_globals for the current thread can be obtained by using
+// either of the following functions.  The "fast" version assumes at least
+// one prior call of __cxa_get_globals has been made from the current
+// thread, so no initialization is necessary.
+extern "C" __cxa_eh_globals *__cxa_get_globals () throw();
+extern "C" __cxa_eh_globals *__cxa_get_globals_fast () throw();
+
+// Allocate memory for the exception plus the thown object.
+extern "C" void *__cxa_allocate_exception(std::size_t thrown_size) throw();
+
+// Free the space allocated for the exception.
+extern "C" void __cxa_free_exception(void *thrown_exception) throw();
+
+// Throw the exception.
+extern "C" void __cxa_throw (void *thrown_exception,
+			     std::type_info *tinfo,
+			     void (*dest) (void *))
+     __attribute__((noreturn));
+
+// Used to implement exception handlers.
+extern "C" void *__cxa_get_exception_ptr (void *) throw();
+extern "C" void *__cxa_begin_catch (void *) throw();
+extern "C" void __cxa_end_catch ();
+extern "C" void __cxa_rethrow () __attribute__((noreturn));
+
+// These facilitate code generation for recurring situations.
+extern "C" void __cxa_bad_cast ();
+extern "C" void __cxa_bad_typeid ();
+
+// @@@ These are not directly specified by the IA-64 C++ ABI.
+
+// Handles re-checking the exception specification if unexpectedHandler
+// 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.
+extern void __terminate(std::terminate_handler) __attribute__((noreturn));
+extern void __unexpected(std::unexpected_handler) __attribute__((noreturn));
+
+// The current installed user handlers.
+extern std::terminate_handler __terminate_handler;
+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' 
+	 << 8 | (_Unwind_Exception_Class) 'N')
+	<< 8 | (_Unwind_Exception_Class) 'U')
+       << 8 | (_Unwind_Exception_Class) 'C')
+      << 8 | (_Unwind_Exception_Class) 'C')
+     << 8 | (_Unwind_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,
+      struct _Unwind_Exception *, struct _Unwind_Context *);
+
+// GNU C++ sjlj personality routine, Version 0.
+extern "C" _Unwind_Reason_Code __gxx_personality_sj0
+     (int, _Unwind_Action, _Unwind_Exception_Class,
+      struct _Unwind_Exception *, struct _Unwind_Context *);
+
+static inline void*
+__gxx_caught_object(_Unwind_Exception* eo)
+{
+  __cxa_exception* header = __get_exception_header_from_ue (eo);
+  return header->adjustedPtr;
+}
+#endif // !__ARM_EABI_UNWINDER__
+
+} /* namespace __cxxabiv1 */
+
+#pragma GCC visibility pop
+
+#endif // _UNWIND_CXX_H