[05df0a8] | 1 | /* |
---|
| 2 | * Thread Handler |
---|
| 3 | * |
---|
| 4 | * |
---|
[08311cc3] | 5 | * COPYRIGHT (c) 1989-1999. |
---|
[05df0a8] | 6 | * On-Line Applications Research Corporation (OAR). |
---|
| 7 | * |
---|
| 8 | * The license and distribution terms for this file may be |
---|
| 9 | * found in found in the file LICENSE in this distribution or at |
---|
[a6eef8b] | 10 | * http://www.rtems.com/license/LICENSE. |
---|
[05df0a8] | 11 | * |
---|
| 12 | * $Id$ |
---|
| 13 | */ |
---|
| 14 | |
---|
| 15 | #include <rtems/system.h> |
---|
| 16 | #include <rtems/score/apiext.h> |
---|
| 17 | #include <rtems/score/context.h> |
---|
| 18 | #include <rtems/score/interr.h> |
---|
| 19 | #include <rtems/score/isr.h> |
---|
| 20 | #include <rtems/score/object.h> |
---|
| 21 | #include <rtems/score/priority.h> |
---|
| 22 | #include <rtems/score/states.h> |
---|
| 23 | #include <rtems/score/sysstate.h> |
---|
| 24 | #include <rtems/score/thread.h> |
---|
| 25 | #include <rtems/score/threadq.h> |
---|
| 26 | #include <rtems/score/userext.h> |
---|
| 27 | #include <rtems/score/wkspace.h> |
---|
| 28 | |
---|
| 29 | /*PAGE |
---|
| 30 | * |
---|
| 31 | * _Thread_Create_idle |
---|
| 32 | */ |
---|
| 33 | |
---|
[7fa97181] | 34 | const char *_Thread_Idle_name = "IDLE"; |
---|
[05df0a8] | 35 | |
---|
| 36 | void _Thread_Create_idle( void ) |
---|
| 37 | { |
---|
| 38 | void *idle; |
---|
| 39 | unsigned32 idle_task_stack_size; |
---|
| 40 | |
---|
| 41 | /* |
---|
| 42 | * The entire workspace is zeroed during its initialization. Thus, all |
---|
| 43 | * fields not explicitly assigned were explicitly zeroed by |
---|
| 44 | * _Workspace_Initialization. |
---|
| 45 | */ |
---|
| 46 | |
---|
| 47 | _Thread_Idle = _Thread_Internal_allocate(); |
---|
| 48 | |
---|
| 49 | /* |
---|
| 50 | * Initialize the IDLE task. |
---|
| 51 | */ |
---|
| 52 | |
---|
| 53 | #if (CPU_PROVIDES_IDLE_THREAD_BODY == TRUE) |
---|
| 54 | idle = (void *) _CPU_Thread_Idle_body; |
---|
| 55 | #else |
---|
| 56 | idle = (void *) _Thread_Idle_body; |
---|
| 57 | #endif |
---|
| 58 | |
---|
| 59 | if ( _CPU_Table.idle_task ) |
---|
| 60 | idle = _CPU_Table.idle_task; |
---|
| 61 | |
---|
| 62 | idle_task_stack_size = _CPU_Table.idle_task_stack_size; |
---|
| 63 | if ( idle_task_stack_size < STACK_MINIMUM_SIZE ) |
---|
| 64 | idle_task_stack_size = STACK_MINIMUM_SIZE; |
---|
| 65 | |
---|
| 66 | _Thread_Initialize( |
---|
| 67 | &_Thread_Internal_information, |
---|
| 68 | _Thread_Idle, |
---|
| 69 | NULL, /* allocate the stack */ |
---|
| 70 | idle_task_stack_size, |
---|
| 71 | CPU_IDLE_TASK_IS_FP, |
---|
| 72 | PRIORITY_MAXIMUM, |
---|
| 73 | TRUE, /* preemptable */ |
---|
| 74 | THREAD_CPU_BUDGET_ALGORITHM_NONE, |
---|
| 75 | NULL, /* no budget algorithm callout */ |
---|
| 76 | 0, /* all interrupts enabled */ |
---|
[7fa97181] | 77 | (Objects_Name) _Thread_Idle_name |
---|
[05df0a8] | 78 | ); |
---|
| 79 | |
---|
| 80 | /* |
---|
| 81 | * WARNING!!! This is necessary to "kick" start the system and |
---|
| 82 | * MUST be done before _Thread_Start is invoked. |
---|
| 83 | */ |
---|
| 84 | |
---|
| 85 | _Thread_Heir = |
---|
| 86 | _Thread_Executing = _Thread_Idle; |
---|
| 87 | |
---|
| 88 | _Thread_Start( |
---|
| 89 | _Thread_Idle, |
---|
| 90 | THREAD_START_NUMERIC, |
---|
| 91 | idle, |
---|
| 92 | NULL, |
---|
| 93 | 0 |
---|
| 94 | ); |
---|
| 95 | |
---|
| 96 | } |
---|