move sboot to the root directory

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

diff --git a/sboot/magpie_1_1/sboot/athos/src/xtos/debug-vector.S b/sboot/magpie_1_1/sboot/athos/src/xtos/debug-vector.S
new file mode 100755 (executable)
index 0000000..35fb1be
--- /dev/null
+++ b/sboot/magpie_1_1/sboot/athos/src/xtos/debug-vector.S
@@ -0,0 +1,65 @@
+// debug-vector.S  --  Debug Exception Vector
+// $Id: //depot/rel/Cottonwood/Xtensa/OS/xtos/debug-vector.S#3 $
+
+// Copyright (c) 2003-2004, 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.
+
+#include <xtensa/coreasm.h>
+#include <xtensa/config/specreg.h>
+#ifdef SIMULATOR
+#include <xtensa/simcall.h>
+#endif
+
+#if XCHAL_HAVE_DEBUG && XCHAL_HAVE_EXCEPTIONS
+
+       //  This code goes at the debug exception vector
+
+       .begin  literal_prefix  .DebugExceptionVector
+       .section                .DebugExceptionVector.text, "ax"
+       .align 4
+       .global _DebugExceptionVector
+_DebugExceptionVector:
+
+# ifdef SIMULATOR
+       //  In the simulator (ISS), let the debugger (if any is attached)
+       //  handle the debug exception, else simply stop the simulation:
+       //
+       wsr     a2, EXCSAVE+XCHAL_DEBUGLEVEL    // save a2 where simulator expects it
+       movi    a2, SYS_gdb_enter_sktloop
+       simcall                                 // have ISS handle the debug exception
+# else
+       //  For hardware, this code does not handle debug exceptions.
+       //  To implement a target-side debug monitor, replace this
+       //  vector with a real one that uses target-specific facilities
+       //  to communicate with the debugger.
+       //  
+1:
+#if XCHAL_HAVE_INTERRUPTS
+       waiti   XCHAL_DEBUGLEVEL        // unexpected debug exception, loop in low-power mode
+#endif
+       j       1b              // infinite loop - unexpected debug exception
+# endif /*!SIMULATOR*/
+
+       .end    literal_prefix
+       .size   _DebugExceptionVector, . - _DebugExceptionVector
+
+#endif /* XCHAL_HAVE_DEBUG && XCHAL_HAVE_EXCEPTIONS */
+