| // int-handler.S - Interrupt Handler Template (for levels > 1) |
| // $Id: //depot/main/Xtensa/OS/xtos/inth-template.S#1 $ |
| |
| // Copyright (c) 2003-2004, 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. |
| |
| |
| // To use this template file, define a macro called _INTERRUPT_LEVEL |
| // to be the interrupt priority level of the vector, then include this file. |
| // The default Makefile defines _INTERRUPT_LEVEL when assembling this file |
| // for each medium and high priority interrupt level. |
| |
| |
| #include <xtensa/coreasm.h> |
| #include "xtos-internal.h" |
| |
| |
| #if XCHAL_HAVE_INTERRUPTS |
| |
| # if INTERRUPT_IS_HI(_INTERRUPT_LEVEL) |
| |
| # if _INTERRUPT_LEVEL > XTOS_LOCKLEVEL |
| /* Not safe to dispatch interrupts in C above XTOS_LOCKLEVEL, |
| * so default to assembly high-priority interrupt handlers template |
| * in this case (with the default XTOS_LOCKLEVEL this never happens): |
| */ |
| # include "int-highpri-template.S" |
| # else |
| /* Dispatch high-priority interrupt handlers in C: */ |
| # include "int-highpri-dispatcher.S" |
| # endif |
| |
| # elif INTERRUPT_IS_MED(_INTERRUPT_LEVEL) |
| |
| # include "int-medpri-dispatcher.S" |
| |
| # elif (_INTERRUPT_LEVEL <= XCHAL_NUM_INTLEVELS) && (_INTERRUPT_LEVEL != XCHAL_DEBUGLEVEL) |
| # error INTERNAL ERROR: Interrupt priority levels > 1 must be either hi or medium priority! |
| # endif |
| |
| #endif /* XCHAL_HAVE_INTERRUPTS */ |