[0123e3b] | 1 | /* |
---|
| 2 | * Signal Manager |
---|
| 3 | * |
---|
| 4 | * |
---|
| 5 | * COPYRIGHT (c) 1989-1998. |
---|
| 6 | * On-Line Applications Research Corporation (OAR). |
---|
| 7 | * Copyright assigned to U.S. Government, 1994. |
---|
| 8 | * |
---|
| 9 | * The license and distribution terms for this file may be |
---|
| 10 | * found in the file LICENSE in this distribution or at |
---|
| 11 | * http://www.OARcorp.com/rtems/license.html. |
---|
| 12 | * |
---|
| 13 | * $Id$ |
---|
| 14 | */ |
---|
| 15 | |
---|
| 16 | #include <rtems/system.h> |
---|
| 17 | #include <rtems/rtems/status.h> |
---|
| 18 | #include <rtems/rtems/asr.h> |
---|
| 19 | #include <rtems/score/isr.h> |
---|
| 20 | #include <rtems/rtems/modes.h> |
---|
| 21 | #include <rtems/rtems/signal.h> |
---|
| 22 | #include <rtems/score/thread.h> |
---|
| 23 | #include <rtems/rtems/tasks.h> |
---|
| 24 | |
---|
| 25 | /*PAGE |
---|
| 26 | * |
---|
| 27 | * rtems_signal_catch |
---|
| 28 | * |
---|
| 29 | * This directive allows a thread to specify what action to take when |
---|
| 30 | * catching signals. |
---|
| 31 | * |
---|
| 32 | * Input parameters: |
---|
| 33 | * handler - address of asynchronous signal routine (asr) |
---|
| 34 | * ( NULL indicates asr is invalid ) |
---|
| 35 | * mode_set - mode value for asr |
---|
| 36 | * |
---|
| 37 | * Output parameters: |
---|
| 38 | * RTEMS_SUCCESSFUL - always succeeds |
---|
| 39 | */ |
---|
| 40 | |
---|
| 41 | rtems_status_code rtems_signal_catch( |
---|
| 42 | rtems_asr_entry asr_handler, |
---|
| 43 | rtems_mode mode_set |
---|
| 44 | ) |
---|
| 45 | { |
---|
| 46 | Thread_Control *executing; |
---|
| 47 | RTEMS_API_Control *api; |
---|
| 48 | ASR_Information *asr; |
---|
| 49 | |
---|
| 50 | /* XXX normalize mode */ |
---|
| 51 | executing = _Thread_Executing; |
---|
| 52 | api = executing->API_Extensions[ THREAD_API_RTEMS ]; |
---|
| 53 | asr = &api->Signal; |
---|
| 54 | |
---|
| 55 | _Thread_Disable_dispatch(); /* cannot reschedule while */ |
---|
| 56 | /* the thread is inconsistent */ |
---|
| 57 | |
---|
| 58 | if ( !_ASR_Is_null_handler( asr_handler ) ) { |
---|
| 59 | asr->mode_set = mode_set; |
---|
| 60 | asr->handler = asr_handler; |
---|
| 61 | } |
---|
| 62 | else |
---|
| 63 | _ASR_Initialize( asr ); |
---|
| 64 | _Thread_Enable_dispatch(); |
---|
| 65 | return RTEMS_SUCCESSFUL; |
---|
| 66 | } |
---|