+++ /dev/null
-/* exc-sethandler.c - register an exception handler in XTOS */
-
-/*
- * Copyright (c) 1999-2006 Tensilica Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include <xtensa/config/core.h>
-#include <xtensa/config/specreg.h>
-#include "xtos-internal.h"
-
-
-#if XCHAL_HAVE_EXCEPTIONS
-
-extern void _xtos_c_wrapper_handler(void); /* assembly-level handler for C handlers */
-extern void _xtos_unhandled_exception(void); /* assembly-level handler for exceptions
- with no registered handler */
-extern void _xtos_p_none(void); /* default/empty C handler */
-
-
-extern _xtos_handler _xtos_c_handler_table[];
-extern _xtos_handler _xtos_exc_handler_table[];
-
-/*
- * Register a C handler for the specified general exception
- * (specified EXCCAUSE value).
- */
-_xtos_handler _xtos_set_exception_handler( int n, _xtos_handler f )
-{
- _xtos_handler ret;
-
- if( (unsigned) n >= XCHAL_EXCCAUSE_NUM )
- return 0;
- if( f == 0 )
- f = &_xtos_p_none;
- ret = _xtos_c_handler_table[n];
- _xtos_exc_handler_table[n] = ( (f == &_xtos_p_none)
- ? &_xtos_unhandled_exception
- : &_xtos_c_wrapper_handler );
- _xtos_c_handler_table[n] = f;
- if( ret == &_xtos_p_none )
- ret = 0;
-
- return ret;
-}
-
-#endif /* XCHAL_HAVE_EXCEPTIONS */
-