+++ /dev/null
-// null-vectors.S - Stubs for Unused Vectors and Handlers
-// $Id: //depot/rel/Cottonwood/Xtensa/OS/xtos/null-vectors.S#3 $
-
-// Copyright (c) 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.
-
-
-// NOTE: The simulator version of this file is currently not used,
-// i.e. the SIMULATOR macro is never defined when assembling this file.
-// The relevant simulator code is left here for illustrative purposes only.
-
-
-#include <xtensa/coreasm.h>
-#include "xtos-internal.h"
-#ifdef SIMULATOR
-#include <xtensa/simcall.h>
-#endif
-
- // These are just tiny non-functional vectors and handlers for when
- // their functionality is not being used. They just try to signal
- // the debugger that an unhandled exception or interrupt occurred,
- // and otherwise just spin in a loop.
- //
- // For interrupts levels above DEBUGLEVEL, lowering PS.INTLEVEL
- // for break to work is tricky, and not always possible in a
- // generic fashion without interfering with normal program execution.
- // So for now we don't do it.
-
-
-#if defined(__SPLIT__user)
-
-# if XCHAL_HAVE_EXCEPTIONS
- .begin literal_prefix .UserExceptionVector
- .section .UserExceptionVector.text, "ax"
- .align 4
- .global _UserExceptionVector
-_UserExceptionVector:
-# if XCHAL_HAVE_DEBUG
- break 1, 1 // unexpected user-vectored general exception
-# endif
-1: j 1b // infinite loop - unexpected user-vectored exception
- .size _UserExceptionVector, . - _UserExceptionVector
- .end literal_prefix
-# endif
-
-#elif defined(__SPLIT__level1int)
-
- .text
- .global _xtos_l1int_handler
-_xtos_l1int_handler:
- movi a3, _xtos_unhandled_exception
- jx a3
- .size _xtos_l1int_handler, . - _xtos_l1int_handler
-
-#elif defined(__SPLIT__level2)
-
-# if (XCHAL_NUM_INTLEVELS >= 2) && (XCHAL_DEBUGLEVEL != 2)
- .begin literal_prefix .Level2InterruptVector
- .section .Level2InterruptVector.text, "ax"
- .align 4
- .global _Level2Vector
-_Level2Vector:
-# if XCHAL_HAVE_DEBUG && (XCHAL_DEBUGLEVEL > 2)
- break 1, 2 // unexpected high-priority interrupt
-# elif defined(SIMULATOR)
- wsr a2, EXCSAVE_2
- movi a2, SYS_unhandled_highpri_interrupt
- simcall // let simulator/debugger report unhandled level-2 interrupt
-# endif
-1: j 1b // infinite loop - unexpected level-2 interrupt
- .size _Level2Vector, . - _Level2Vector
- .text
- .end literal_prefix
-# endif /* level 2 */
-
-
-#elif defined(__SPLIT__level3)
-
-# if (XCHAL_NUM_INTLEVELS >= 3) && (XCHAL_DEBUGLEVEL != 3)
- .begin literal_prefix .Level3InterruptVector
- .section .Level3InterruptVector.text, "ax"
- .align 4
- .global _Level3Vector
-_Level3Vector:
-# if XCHAL_HAVE_DEBUG && (XCHAL_DEBUGLEVEL > 3)
- break 1, 2 // unexpected high-priority interrupt
-# elif defined(SIMULATOR)
- wsr a2, EXCSAVE_3
- movi a2, SYS_unhandled_highpri_interrupt
- simcall // let simulator/debugger report unhandled level-3 interrupt
-# endif
-1: j 1b // infinite loop - unexpected level-3 interrupt
- .size _Level3Vector, . - _Level3Vector
- .text
- .end literal_prefix
-# endif /* level 3 */
-
-
-#elif defined(__SPLIT__level4)
-
-# if (XCHAL_NUM_INTLEVELS >= 4) && (XCHAL_DEBUGLEVEL != 4)
- .begin literal_prefix .Level4InterruptVector
- .section .Level4InterruptVector.text, "ax"
- .align 4
- .global _Level4Vector
-_Level4Vector:
-# if XCHAL_HAVE_DEBUG && (XCHAL_DEBUGLEVEL > 4)
- break 1, 2 // unexpected high-priority interrupt
-# elif defined(SIMULATOR)
- wsr a2, EXCSAVE_4
- movi a2, SYS_unhandled_highpri_interrupt
- simcall // let simulator/debugger report unhandled level-4 interrupt
-# endif
-1: j 1b // infinite loop - unexpected level-4 interrupt
- .size _Level4Vector, . - _Level4Vector
- .text
- .end literal_prefix
-# endif /* level 4 */
-
-
-#elif defined(__SPLIT__level5)
-
-# if (XCHAL_NUM_INTLEVELS >= 5) && (XCHAL_DEBUGLEVEL != 5)
- .begin literal_prefix .Level5InterruptVector
- .section .Level5InterruptVector.text, "ax"
- .align 4
- .global _Level5Vector
-_Level5Vector:
-# if XCHAL_HAVE_DEBUG && (XCHAL_DEBUGLEVEL > 5)
- break 1, 2 // unexpected high-priority interrupt
-# elif defined(SIMULATOR)
- wsr a2, EXCSAVE_5
- movi a2, SYS_unhandled_highpri_interrupt
- simcall // let simulator/debugger report unhandled level-5 interrupt
-# endif
-1: j 1b // infinite loop - unexpected level-5 interrupt
- .size _Level5Vector, . - _Level5Vector
- .text
- .end literal_prefix
-# endif /* level 5 */
-
-
-#elif defined(__SPLIT__level6)
-
-# if (XCHAL_NUM_INTLEVELS >= 6) && (XCHAL_DEBUGLEVEL != 6)
- .begin literal_prefix .Level6InterruptVector
- .section .Level6InterruptVector.text, "ax"
- .align 4
- .global _Level6Vector
-_Level6Vector:
-# if XCHAL_HAVE_DEBUG && (XCHAL_DEBUGLEVEL > 6)
- break 1, 2 // unexpected high-priority interrupt
-# elif defined(SIMULATOR)
- wsr a2, EXCSAVE_6
- movi a2, SYS_unhandled_highpri_interrupt
- simcall // let simulator/debugger report unhandled level-6 interrupt
-# endif
-1: j 1b // infinite loop - unexpected level-6 interrupt
- .size _Level6Vector, . - _Level6Vector
- .text
- .end literal_prefix
-# endif /* level 6 */
-
-
-#endif /* split */
-
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