move sboot to the root directory

[open-ath9k-htc-firmware.git] / sboot / magpie_1_1 / sboot / athos / src / xtos / exc-sethandler.c

diff --git a/sboot/magpie_1_1/sboot/athos/src/xtos/exc-sethandler.c b/sboot/magpie_1_1/sboot/athos/src/xtos/exc-sethandler.c
new file mode 100755 (executable)
index 0000000..7d83b73
--- /dev/null
+++ b/sboot/magpie_1_1/sboot/athos/src/xtos/exc-sethandler.c
@@ -0,0 +1,66 @@
+/* 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 */
+