| // null-syscall.S - Stub for Unused SYSCALL Handler |
| // $Id: //depot/rel/Eaglenest/Xtensa/OS/xtos/null-syscall.S#1 $ |
| |
| // 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. |
| |
| |
| // Redirect SYSCALL exceptions as not handled, when |
| // that functionality is not needed. Done this way, a user can |
| // just specify this small handler to override the default one. |
| |
| .text |
| .weak _xtos_unhandled_exception |
| .global _xtos_syscall_handler |
| _xtos_syscall_handler: |
| movi a3, _xtos_unhandled_exception |
| 1: beqz a3, 1b |
| jx a3 |
| .size _xtos_syscall_handler, . - _xtos_syscall_handler |
| |
