+++ /dev/null
-// 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 */
-