1 | /* |
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2 | * |
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3 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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4 | * On-Line Applications Research Corporation (OAR). |
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5 | * All rights assigned to U.S. Government, 1994. |
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6 | * |
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7 | * This material may be reproduced by or for the U.S. Government pursuant |
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8 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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9 | * notice must appear in all copies of this file and its derivatives. |
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10 | * |
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11 | * $Id$ |
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12 | */ |
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13 | |
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14 | #include "system.h" |
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15 | #undef EXTERN |
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16 | #define EXTERN |
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17 | #include "conftbl.h" |
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18 | #include "gvar.h" |
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19 | |
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20 | #include <bsp.h> |
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21 | |
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22 | rtems_task Task_1( |
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23 | rtems_task_argument argument |
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24 | ); |
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25 | |
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26 | rtems_task Task_2( |
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27 | rtems_task_argument argument |
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28 | ); |
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29 | |
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30 | volatile rtems_unsigned32 Interrupt_occurred; |
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31 | volatile rtems_unsigned32 Interrupt_enter_time, Interrupt_enter_nested_time; |
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32 | volatile rtems_unsigned32 Interrupt_return_time, Interrupt_return_nested_time; |
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33 | rtems_unsigned32 Interrupt_nest; |
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34 | |
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35 | rtems_isr Isr_handler( |
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36 | rtems_vector_number vector |
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37 | ); |
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38 | |
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39 | /* |
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40 | * INTERNAL RTEMS VARIABLES!!! |
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41 | */ |
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42 | |
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43 | extern rtems_unsigned32 _Thread_Dispatch_disable_level; |
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44 | extern rtems_unsigned32 _Context_Switch_necessary; |
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45 | extern Chain_Control *_Thread_Ready_chain; |
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46 | extern rtems_tcb *_Thread_Heir; |
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47 | |
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48 | rtems_task Init( |
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49 | rtems_task_argument argument |
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50 | ) |
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51 | { |
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52 | rtems_status_code status; |
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53 | |
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54 | puts( "\n\n*** TIME TEST 27 ***" ); |
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55 | |
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56 | status = rtems_task_create( |
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57 | rtems_build_name( 'T', 'A', '1', ' ' ), |
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58 | 254, |
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59 | 1024, |
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60 | RTEMS_DEFAULT_MODES, |
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61 | RTEMS_DEFAULT_ATTRIBUTES, |
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62 | &Task_id[ 1 ] |
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63 | ); |
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64 | directive_failed( status, "rtems_task_create Task_1" ); |
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65 | |
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66 | status = rtems_task_start( Task_id[ 1 ], Task_1, 0 ); |
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67 | directive_failed( status, "rtems_task_start Task_1" ); |
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68 | |
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69 | status = rtems_task_create( |
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70 | rtems_build_name( 'T', 'A', '2', ' ' ), |
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71 | 254, |
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72 | 1024, |
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73 | RTEMS_DEFAULT_MODES, |
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74 | RTEMS_DEFAULT_ATTRIBUTES, |
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75 | &Task_id[ 2 ] |
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76 | ); |
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77 | directive_failed( status, "rtems_task_create of Task_2" ); |
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78 | |
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79 | status = rtems_task_start( Task_id[ 2 ], Task_2, 0 ); |
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80 | directive_failed( status, "rtems_task_start of Task_2" ); |
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81 | |
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82 | status = rtems_task_delete( RTEMS_SELF ); |
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83 | directive_failed( status, "rtems_task_delete of RTEMS_SELF" ); |
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84 | } |
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85 | |
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86 | rtems_task Task_1( |
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87 | rtems_task_argument argument |
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88 | ) |
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89 | { |
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90 | _Thread_Dispatch_disable_level = 1; |
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91 | |
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92 | Interrupt_nest = 1; |
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93 | |
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94 | Install_tm27_vector( Isr_handler ); |
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95 | |
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96 | Interrupt_occurred = 0; |
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97 | Timer_initialize(); |
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98 | Cause_tm27_intr(); |
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99 | /* goes to Isr_handler */ |
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100 | |
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101 | #if (MUST_WAIT_FOR_INTERRUPT == 1) |
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102 | while ( Interrupt_occurred == 0 ); |
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103 | #endif |
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104 | Interrupt_return_time = Read_timer(); |
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105 | |
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106 | put_time( |
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107 | "INTERRUPT_ENTER (nested interrupt)", |
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108 | Interrupt_enter_nested_time, |
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109 | 1, |
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110 | 0, |
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111 | 0 |
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112 | ); |
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113 | |
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114 | put_time( |
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115 | "INTERRUPT_RETURN (nested interrupt)", |
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116 | Interrupt_return_nested_time, |
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117 | 1, |
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118 | 0, |
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119 | 0 |
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120 | ); |
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121 | |
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122 | Interrupt_nest = 0; |
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123 | |
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124 | _Thread_Dispatch_disable_level = 0; |
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125 | |
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126 | Interrupt_occurred = 0; |
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127 | Timer_initialize(); |
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128 | Cause_tm27_intr(); |
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129 | /* goes to Isr_handler */ |
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130 | |
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131 | #if (MUST_WAIT_FOR_INTERRUPT == 1) |
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132 | while ( Interrupt_occurred == 0 ); |
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133 | #endif |
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134 | Interrupt_return_time = Read_timer(); |
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135 | |
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136 | put_time( |
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137 | "INTERRUPT_ENTER (no preempt)", |
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138 | Interrupt_enter_time, |
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139 | 1, |
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140 | 0, |
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141 | 0 |
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142 | ); |
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143 | |
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144 | put_time( |
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145 | "INTERRUPT_RETURN (no preempt)", |
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146 | Interrupt_return_time, |
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147 | 1, |
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148 | 0, |
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149 | 0 |
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150 | ); |
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151 | |
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152 | _Thread_Dispatch_disable_level = 0; |
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153 | |
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154 | _Thread_Heir = (rtems_tcb *) _Thread_Ready_chain[254].last; |
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155 | |
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156 | _Context_Switch_necessary = 1; |
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157 | |
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158 | Interrupt_occurred = 0; |
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159 | Timer_initialize(); |
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160 | Cause_tm27_intr(); |
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161 | /* goes to Isr_handler */ |
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162 | } |
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163 | |
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164 | rtems_task Task_2( |
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165 | rtems_task_argument argument |
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166 | ) |
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167 | { |
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168 | #if (MUST_WAIT_FOR_INTERRUPT == 1) |
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169 | while ( Interrupt_occurred == 0 ); |
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170 | #endif |
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171 | end_time = Read_timer(); |
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172 | |
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173 | put_time( |
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174 | "INTERRUPT_ENTER (preempt)", |
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175 | Interrupt_enter_time, |
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176 | 1, |
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177 | 0, |
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178 | 0 |
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179 | ); |
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180 | |
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181 | put_time( |
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182 | "INTERRUPT_RETURN (preempt)", |
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183 | end_time, |
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184 | 1, |
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185 | 0, |
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186 | 0 |
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187 | ); |
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188 | |
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189 | exit( 0 ); |
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190 | } |
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191 | |
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192 | /* The Isr_handler() and Isr_handler_inner() routines are structured |
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193 | * so that there will be as little entry overhead as possible included |
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194 | * in the interrupt entry time. |
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195 | */ |
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196 | |
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197 | void Isr_handler_inner( void ); |
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198 | |
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199 | rtems_isr Isr_handler( |
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200 | rtems_vector_number vector |
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201 | ) |
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202 | { |
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203 | end_time = Read_timer(); |
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204 | |
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205 | Interrupt_occurred = 1; |
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206 | Isr_handler_inner(); |
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207 | } |
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208 | |
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209 | void Isr_handler_inner( void ) |
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210 | { |
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211 | |
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212 | /*enable_tracing();*/ |
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213 | Clear_tm27_intr(); |
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214 | switch ( Interrupt_nest ) { |
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215 | case 0: |
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216 | Interrupt_enter_time = end_time; |
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217 | break; |
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218 | case 1: |
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219 | Interrupt_enter_time = end_time; |
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220 | Interrupt_nest = 2; |
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221 | Interrupt_occurred = 0; |
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222 | Lower_tm27_intr(); |
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223 | Timer_initialize(); |
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224 | Cause_tm27_intr(); |
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225 | /* goes to a nested copy of Isr_handler */ |
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226 | #if (MUST_WAIT_FOR_INTERRUPT == 1) |
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227 | while ( Interrupt_occurred == 0 ); |
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228 | #endif |
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229 | Interrupt_return_nested_time = Read_timer(); |
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230 | break; |
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231 | case 2: |
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232 | Interrupt_enter_nested_time = end_time; |
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233 | break; |
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234 | } |
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235 | |
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236 | Timer_initialize(); |
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237 | } |
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