| // interrupt-table.S - Interrupt handler table and default handler |
| |
| // Copyright (c) 2004-2017 Cadence Design Systems, 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 "xtos-internal.h" |
| |
| |
| #if XCHAL_HAVE_INTERRUPTS |
| |
| // |
| // void xtos_unhandled_interrupt( int n ); |
| // |
| // Default/empty interrupt handler. |
| // This is used for interrupts with no registered handler. |
| // Parameter n is the interrupt number (0 thru 31). |
| // |
| |
| .text |
| .align 4 |
| .global xtos_unhandled_interrupt |
| .type xtos_unhandled_interrupt,@function |
| |
| xtos_unhandled_interrupt: |
| abi_entry |
| # if XCHAL_HAVE_DEBUG |
| // Break into the debugger if one is present and active: |
| # if XCHAL_NUM_INTLEVELS > XCHAL_DEBUGLEVEL |
| rsil a3, XCHAL_DEBUGLEVEL-1 // ensure break takes effect |
| # endif |
| break 1, 15 // unhandled (unregistered) interrupt $a2 |
| # else |
| 1: j 1b // unhandled interrupt - loop forever |
| # endif |
| abi_return |
| |
| .size xtos_unhandled_interrupt, . - xtos_unhandled_interrupt |
| |
| #endif /* XCHAL_HAVE_INTERRUPTS */ |
| |
