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+#ifndef CYGONCE_KERNEL_EXCEPT_HXX
+#define CYGONCE_KERNEL_EXCEPT_HXX
+
+//==========================================================================
+//
+// except.hxx
+//
+// Exception handling declarations
+//
+//==========================================================================
+//####ECOSGPLCOPYRIGHTBEGIN####
+// -------------------------------------------
+// This file is part of eCos, the Embedded Configurable Operating System.
+// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
+//
+// eCos 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.
+//
+// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
+// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or inline functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. However the source code for this file must still be made available
+// in accordance with section (3) of the GNU General Public License.
+//
+// This exception does not invalidate any other reasons why a work based on
+// this file might be covered by the GNU General Public License.
+//
+// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
+// at http://sources.redhat.com/ecos/ecos-license/
+// -------------------------------------------
+//####ECOSGPLCOPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s): nickg
+// Contributors: nickg, jlarmour
+// Date: 1999-02-16
+// Purpose: Define exception interfaces
+// Description: The classes defined here collectively implement the
+// internal API used to register, manage and deliver
+// exceptions.
+// Usage: #include <cyg/kernel/thread.hxx>
+//
+//####DESCRIPTIONEND####
+//
+//==========================================================================
+
+#include <cyg/kernel/ktypes.h>
+#include <cyg/infra/cyg_ass.h> // assertion macros
+#include <cyg/hal/hal_intr.h> // exception defines
+
+// -------------------------------------------------------------------------
+// Exception handler function prototype
+
+typedef void cyg_exception_handler(
+ CYG_ADDRWORD data, // user supplied data
+ cyg_code exception_number, // exception being raised
+ CYG_ADDRWORD exception_info // any exception specific info
+ );
+
+// -------------------------------------------------------------------------
+// Exception delivery interface. This function is exported to the HAL which
+// invokes it for all exceptions that it is not able to handle itself.
+
+externC void cyg_hal_deliver_exception( CYG_WORD code, CYG_ADDRWORD data );
+
+// -------------------------------------------------------------------------
+// Exception control class. Depending on the configuration there is either
+// one of these per thread, or one for the entire system.
+
+#ifdef CYGPKG_KERNEL_EXCEPTIONS
+
+class Cyg_Exception_Control
+{
+
+#ifdef CYGSEM_KERNEL_EXCEPTIONS_DECODE
+ cyg_exception_handler *exception_handler[CYGNUM_HAL_EXCEPTION_COUNT];
+
+ CYG_ADDRWORD exception_data[CYGNUM_HAL_EXCEPTION_COUNT];
+#else
+ cyg_exception_handler *exception_handler; // Handler function
+
+ CYG_ADDRWORD exception_data; // Handler data
+#endif
+
+public:
+
+ Cyg_Exception_Control();
+
+ // Register an exception handler for either the specific exception
+ // or for all exceptions.
+ void register_exception(
+ cyg_code exception_number, // exception number
+ cyg_exception_handler handler, // handler function
+ CYG_ADDRWORD data, // data argument
+ cyg_exception_handler **old_handler, // handler function
+ CYG_ADDRWORD *old_data // data argument
+ );
+
+ // Remove an exception handler.
+ void deregister_exception(
+ cyg_code exception_number // exception number
+ );
+
+ // Deliver the given exception now by invoking the appropriate
+ // exception handler.
+ void deliver_exception(
+ cyg_code exception_number, // exception being raised
+ CYG_ADDRWORD exception_info // exception specific info
+ );
+};
+
+#endif
+
+// -------------------------------------------------------------------------
+#endif // ifndef CYGONCE_KERNEL_EXCEPT_HXX
+// EOF except.hxx