1 | /* |
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2 | * The license and distribution terms for this file may be |
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3 | * found in the file LICENSE in this distribution or at |
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4 | * http://www.OARcorp.com/rtems/license.html. |
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5 | * |
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6 | * $Id$ |
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7 | */ |
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8 | |
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9 | #include <itron.h> |
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10 | |
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11 | #include <rtems/score/thread.h> |
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12 | #include <rtems/score/userext.h> |
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13 | #include <rtems/score/wkspace.h> |
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14 | #include <rtems/score/apiext.h> |
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15 | #include <rtems/score/sysstate.h> |
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16 | |
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17 | #include <rtems/itron/task.h> |
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18 | |
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19 | |
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20 | /* |
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21 | * cre_tsk - Create Task |
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22 | */ |
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23 | |
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24 | /* |
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25 | * XXX - How do I return these errors ??? Do I have to validate the ID |
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26 | prior to calling the ID routine ?? |
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27 | E_NOMEM Insufficient memory (Memory for control block and/or user stack |
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28 | cannot be allocated) |
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29 | E_ID Invalid ID Number (tskid was invalid or could not be used) |
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30 | E_RSATR Reserved attribute (tskatr was invalid or could not be used) |
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31 | E_OBJ Invalid object state (a task of the same ID already exists) |
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32 | E_OACV Object access violation (A tskid less than -4 was specified from |
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33 | a user task. This is implementation dependent.) |
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34 | E_PAR Parameter error (pk_ctsk, task, itskpri and/or stksz is invalid) |
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35 | EN_OBJNO An object number which could not be accessed on the target node |
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36 | is specified. |
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37 | EN_CTXID Specified an object on another node when the system call was |
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38 | issued from a task in dispatch disabled state or from a task- |
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39 | independent portion |
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40 | EN_PAR A value outside the range supported by the target node and/or |
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41 | transmission packet format was specified as a parameter (a value |
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42 | outside supported range was specified for exinf, tskatr, task, |
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43 | itskpri and/or stksz) |
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44 | */ |
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45 | |
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46 | ER cre_tsk( |
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47 | ID tskid, |
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48 | T_CTSK *pk_ctsk |
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49 | ) |
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50 | { |
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51 | register Thread_Control *the_thread; |
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52 | char *name = "trn"; |
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53 | boolean status; |
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54 | Priority_Control core_priority; |
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55 | |
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56 | /* |
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57 | * Disable dispatching. |
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58 | */ |
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59 | |
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60 | _Thread_Disable_dispatch(); |
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61 | |
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62 | /* |
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63 | * allocate the thread. |
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64 | */ |
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65 | |
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66 | the_thread = _ITRON_Task_Allocate( tskid ); |
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67 | if ( !the_thread ) { |
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68 | ena_dsp(); |
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69 | return _ITRON_Task_Clarify_allocation_id_error( tskid ); |
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70 | } |
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71 | |
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72 | /* |
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73 | * XXX - FIX THE VARIABLES TO THE CORRECT VALUES!!! |
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74 | */ |
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75 | |
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76 | /* |
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77 | * Initialize the core thread for this task. |
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78 | */ |
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79 | |
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80 | core_priority = _ITRON_Task_Priority_to_Core( pk_ctsk->itskpri ); |
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81 | status = _Thread_Initialize( |
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82 | &_ITRON_Task_Information, |
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83 | the_thread, |
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84 | NULL, |
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85 | pk_ctsk->stksz, |
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86 | TRUE, /* XXX - All tasks FP ??? */ |
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87 | core_priority, |
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88 | TRUE, |
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89 | THREAD_CPU_BUDGET_ALGORITHM_EXHAUST_TIMESLICE, |
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90 | NULL, /* no budget algorithm callout */ |
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91 | 0, |
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92 | &name |
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93 | ); |
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94 | |
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95 | if ( !status ) { |
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96 | _ITRON_Task_Free( the_thread ); |
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97 | _Thread_Enable_dispatch(); |
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98 | return -1; |
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99 | #if (0) |
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100 | /* XXX */ |
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101 | #endif |
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102 | } |
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103 | |
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104 | #if (0) /* XXX We have any thing else to set per API structure? */ |
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105 | api = the_thread->API_Extensions[ THREAD_API_ITRON ]; |
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106 | asr = &api->Signal; |
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107 | |
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108 | asr->is_enabled = FALSE; |
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109 | |
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110 | *id = the_thread->Object.id; |
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111 | #endif |
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112 | |
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113 | /* |
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114 | * This insures we evaluate the process-wide signals pending when we |
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115 | * first run. |
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116 | * |
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117 | * NOTE: Since the thread starts with all unblocked, this is necessary. |
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118 | */ |
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119 | |
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120 | the_thread->do_post_task_switch_extension = TRUE; |
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121 | |
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122 | the_thread->Start.entry_point = (Thread_Entry) pk_ctsk->task; |
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123 | |
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124 | _Thread_Enable_dispatch(); |
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125 | return E_OK; |
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126 | } |
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127 | |
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