| /* |
| * Copyright (c) 2014 Wind River Systems, Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * @file |
| * @brief ARM Cortex-M fiber_abort() routine |
| * |
| * The ARM Cortex-M architecture provides its own fiber_abort() to deal with |
| * different CPU modes (handler vs thread) when a fiber aborts. When its entry |
| * point returns or when it aborts itself, the CPU is in thread mode and must |
| * call _Swap() (which triggers a service call), but when in handler mode, the |
| * CPU must exit handler mode to cause the context switch, and thus must queue |
| * the PendSV exception. |
| */ |
| |
| #ifdef CONFIG_MICROKERNEL |
| #include <microkernel.h> |
| #include <micro_private_types.h> |
| #endif |
| |
| #include <nano_private.h> |
| #include <toolchain.h> |
| #include <sections.h> |
| #include <nanokernel.h> |
| #include <arch/cpu.h> |
| |
| /** |
| * |
| * @brief Abort the currently executing fiber |
| * |
| * Possible reasons for a fiber aborting: |
| * |
| * - the fiber explicitly aborts itself by calling this routine |
| * - the fiber implicitly aborts by returning from its entry point |
| * - the fiber encounters a fatal exception |
| * |
| * @return N/A |
| */ |
| |
| void fiber_abort(void) |
| { |
| _thread_exit(_nanokernel.current); |
| if (_ScbIsInThreadMode()) { |
| _nano_fiber_swap(); |
| } else { |
| _ScbPendsvSet(); |
| } |
| } |