move sboot to the root directory

[open-ath9k-htc-firmware.git] / sboot / magpie_1_1 / sboot / athos / src / xtos / nmi-vector.S

diff --git a/sboot/magpie_1_1/sboot/athos/src/xtos/nmi-vector.S b/sboot/magpie_1_1/sboot/athos/src/xtos/nmi-vector.S
new file mode 100755 (executable)
index 0000000..69108bc
--- /dev/null
+++ b/sboot/magpie_1_1/sboot/athos/src/xtos/nmi-vector.S
@@ -0,0 +1,61 @@
+// nmi-vector.S  --  Standalone NMI Interrupt Vector/Handler
+// $Id: //depot/rel/Cottonwood/Xtensa/OS/xtos/nmi-vector.S#3 $
+
+// Copyright (c) 2003, 2006, 2010 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.
+
+// The NMI exception vector handles non-maskable interrupts.
+
+#include <xtensa/coreasm.h>
+#include <xtensa/config/system.h>
+#include <xtensa/config/specreg.h>
+
+#if XCHAL_HAVE_NMI
+
+       .begin  literal_prefix  .NMIExceptionVector
+       .section                .NMIExceptionVector.text, "ax"
+
+       .align  4
+       .global _NMIExceptionVector
+_NMIExceptionVector:
+
+//  Insert any custom NMI handling code here.
+//  For example:
+//     wsr     a0, EXCSAVE+XCHAL_NMILEVEL
+//     movi    a0, ...address of some save area specific to this code...
+//     s32i    a1, a0, 0       // save whatever registers are needed
+//     :
+//     do something useful ...
+//     :
+//     l32i    a1, a0, 0       // restore whatever registers were saved
+//     rsr     a0, EXCSAVE+XCHAL_NMILEVEL
+//
+//  This default NMI handler does not do anything.  It just returns
+//  immediately upon any occurrence of a non-maskable interrupt.
+
+       rfi     XCHAL_NMILEVEL
+
+       .size   _NMIExceptionVector, . - _NMIExceptionVector
+       .text
+       .end    literal_prefix
+
+#endif /* XCHAL_HAVE_NMI */
+