2 FreeRTOS V7.5.1 - Copyright (C) 2013 Real Time Engineers Ltd.
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4 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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6 ***************************************************************************
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8 * FreeRTOS provides completely free yet professionally developed, *
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9 * robust, strictly quality controlled, supported, and cross *
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10 * platform software that has become a de facto standard. *
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12 * Help yourself get started quickly and support the FreeRTOS *
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13 * project by purchasing a FreeRTOS tutorial book, reference *
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14 * manual, or both from: http://www.FreeRTOS.org/Documentation *
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18 ***************************************************************************
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20 This file is part of the FreeRTOS distribution.
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22 FreeRTOS is free software; you can redistribute it and/or modify it under
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23 the terms of the GNU General Public License (version 2) as published by the
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24 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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26 >>! NOTE: The modification to the GPL is included to allow you to distribute
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27 >>! a combined work that includes FreeRTOS without being obliged to provide
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28 >>! the source code for proprietary components outside of the FreeRTOS
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31 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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32 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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33 FOR A PARTICULAR PURPOSE. Full license text is available from the following
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34 link: http://www.freertos.org/a00114.html
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38 ***************************************************************************
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40 * Having a problem? Start by reading the FAQ "My application does *
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41 * not run, what could be wrong?" *
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43 * http://www.FreeRTOS.org/FAQHelp.html *
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45 ***************************************************************************
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47 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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48 license and Real Time Engineers Ltd. contact details.
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50 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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51 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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52 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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54 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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55 Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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56 licenses offer ticketed support, indemnification and middleware.
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58 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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59 engineered and independently SIL3 certified version for use in safety and
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60 mission critical applications that require provable dependability.
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65 /* Scheduler includes. */
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66 #include "FreeRTOS.h"
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70 * The register test task as described in the comments at the top of main-full.c.
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72 void vRegisterTest1( void *pvParameters );
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73 void vRegisterTest2( void *pvParameters );
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75 /* Variables that are incremented on each iteration of the reg test tasks -
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76 provided the tasks have not reported any errors. The check timer inspects these
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77 variables to ensure they are still incrementing as expected. If a variable
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78 stops incrementing then it is likely that its associate task has stalled or
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79 detected an error. */
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80 volatile unsigned long ulRegTest1CycleCount = 0UL, ulRegTest2CycleCount = 0UL;
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82 /*-----------------------------------------------------------*/
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84 void vRegisterTest1( void *pvParameters )
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86 /* This task uses an infinite loop that is implemented in the assembly
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89 First fill the relevant registers with known values. */
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90 asm volatile ( " addi r3, r0, 3 \n\t" \
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91 " addi r4, r0, 4 \n\t" \
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92 " addi r6, r0, 6 \n\t" \
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93 " addi r7, r0, 7 \n\t" \
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94 " addi r8, r0, 8 \n\t" \
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95 " addi r9, r0, 9 \n\t" \
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96 " addi r10, r0, 10 \n\t" \
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97 " addi r11, r0, 11 \n\t" \
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98 " addi r12, r0, 12 \n\t" \
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99 " addi r16, r0, 16 \n\t" \
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100 " addi r19, r0, 19 \n\t" \
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101 " addi r20, r0, 20 \n\t" \
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102 " addi r21, r0, 21 \n\t" \
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103 " addi r22, r0, 22 \n\t" \
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104 " addi r23, r0, 23 \n\t" \
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105 " addi r24, r0, 24 \n\t" \
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106 " addi r25, r0, 25 \n\t" \
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107 " addi r26, r0, 26 \n\t" \
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108 " addi r27, r0, 27 \n\t" \
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109 " addi r28, r0, 28 \n\t" \
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110 " addi r29, r0, 29 \n\t" \
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111 " addi r30, r0, 30 \n\t" \
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112 " addi r31, r0, 31 \n\t"
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115 /* Now test the register values to ensure they contain the same value that
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116 was written to them above. This task will get preempted frequently so
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117 other tasks are likely to have executed since the register values were
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118 written. If any register contains an unexpected value then the task will
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119 branch to Error_Loop_1, which in turn prevents it from incrementing its
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120 loop counter, enabling the check timer to determine that all is not as it
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123 asm volatile ( "Loop_Start_1: \n\t" \
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124 " xori r18, r3, 3 \n\t" \
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125 " bnei r18, Error_Loop_1 \n\t" \
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126 " xori r18, r4, 4 \n\t" \
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127 " bnei r18, Error_Loop_1 \n\t" \
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128 " xori r18, r6, 6 \n\t" \
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129 " bnei r18, Error_Loop_1 \n\t" \
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130 " xori r18, r7, 7 \n\t" \
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131 " bnei r18, Error_Loop_1 \n\t" \
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132 " xori r18, r8, 8 \n\t" \
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133 " bnei r18, Error_Loop_1 \n\t" \
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134 " xori r18, r9, 9 \n\t" \
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135 " bnei r18, Error_Loop_1 \n\t" \
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136 " xori r18, r10, 10 \n\t" \
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137 " bnei r18, Error_Loop_1 \n\t" \
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138 " xori r18, r11, 11 \n\t" \
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139 " bnei r18, Error_Loop_1 \n\t" \
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140 " xori r18, r12, 12 \n\t" \
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141 " bnei r18, Error_Loop_1 \n\t" \
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142 " xori r18, r16, 16 \n\t" \
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143 " bnei r18, Error_Loop_1 \n\t" \
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144 " xori r18, r19, 19 \n\t" \
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145 " bnei r18, Error_Loop_1 \n\t" \
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146 " xori r18, r20, 20 \n\t" \
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147 " bnei r18, Error_Loop_1 \n\t" \
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148 " xori r18, r21, 21 \n\t" \
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149 " bnei r18, Error_Loop_1 \n\t" \
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150 " xori r18, r22, 22 \n\t" \
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151 " bnei r18, Error_Loop_1 \n\t" \
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152 " xori r18, r23, 23 \n\t" \
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153 " bnei r18, Error_Loop_1 \n\t" \
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154 " xori r18, r24, 24 \n\t" \
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155 " bnei r18, Error_Loop_1 \n\t" \
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156 " xori r18, r25, 25 \n\t" \
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157 " bnei r18, Error_Loop_1 \n\t" \
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158 " xori r18, r26, 26 \n\t" \
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159 " bnei r18, Error_Loop_1 \n\t" \
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160 " xori r18, r27, 27 \n\t" \
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161 " bnei r18, Error_Loop_1 \n\t" \
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162 " xori r18, r28, 28 \n\t" \
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163 " bnei r18, Error_Loop_1 \n\t" \
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164 " xori r18, r29, 29 \n\t" \
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165 " bnei r18, Error_Loop_1 \n\t" \
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166 " xori r18, r30, 30 \n\t" \
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167 " bnei r18, Error_Loop_1 \n\t" \
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168 " xori r18, r31, 31 \n\t" \
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169 " bnei r18, Error_Loop_1 \n\t"
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172 /* If this task has not branched to the error loop, then everything is ok,
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173 and the check variable can be incremented to indicate that this task
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174 is still running. Then, brach back to the top to check the register
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176 asm volatile ( " lwi r18, r0, ulRegTest1CycleCount \n\t" \
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177 " addik r18, r18, 1 \n\t" \
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178 " swi r18, r0, ulRegTest1CycleCount \n\t" \
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180 " bri Loop_Start_1 "
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183 /* The test function will branch here if it discovers an error. This part
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184 of the code just sits in a NULL loop, which prevents the check variable
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185 incrementing any further to allow the check timer to recognize that this
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186 test has failed. */
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187 asm volatile ( "Error_Loop_1: \n\t" \
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192 ( void ) pvParameters;
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194 /*-----------------------------------------------------------*/
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196 void vRegisterTest2( void *pvParameters )
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198 /* This task uses an infinite loop that is implemented in the assembly
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201 First fill the registers with known values. */
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202 asm volatile ( " addi r16, r0, 1016 \n\t" \
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203 " addi r19, r0, 1019 \n\t" \
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204 " addi r20, r0, 1020 \n\t" \
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205 " addi r21, r0, 1021 \n\t" \
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206 " addi r22, r0, 1022 \n\t" \
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207 " addi r23, r0, 1023 \n\t" \
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208 " addi r24, r0, 1024 \n\t" \
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209 " addi r25, r0, 1025 \n\t" \
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210 " addi r26, r0, 1026 \n\t" \
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211 " addi r27, r0, 1027 \n\t" \
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212 " addi r28, r0, 1028 \n\t" \
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213 " addi r29, r0, 1029 \n\t" \
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214 " addi r30, r0, 1030 \n\t" \
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215 " addi r31, r0, 1031 \n\t" \
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220 /* Unlike vRegisterTest1, vRegisterTest2 performs a yield. This increases
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221 the test coverage, but does mean volatile registers need re-loading with
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222 their exepcted values. */
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225 /* taskYIELD() could have changed temporaries - set them back to those
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226 expected by the reg test task. */
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227 asm volatile ( " addi r3, r0, 103 \n\t" \
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228 " addi r4, r0, 104 \n\t" \
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229 " addi r6, r0, 106 \n\t" \
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230 " addi r7, r0, 107 \n\t" \
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231 " addi r8, r0, 108 \n\t" \
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232 " addi r9, r0, 109 \n\t" \
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233 " addi r10, r0, 1010 \n\t" \
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234 " addi r11, r0, 1011 \n\t" \
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235 " addi r12, r0, 1012 \n\t" \
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239 /* Now test the register values to ensure they contain the same value that
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240 was written to them above. This task will get preempted frequently so
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241 other tasks are likely to have executed since the register values were
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243 asm volatile ( " xori r18, r3, 103 \n\t" \
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244 " bnei r18, Error_Loop_2 \n\t" \
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245 " xori r18, r4, 104 \n\t" \
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246 " bnei r18, Error_Loop_2 \n\t" \
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247 " xori r18, r6, 106 \n\t" \
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248 " bnei r18, Error_Loop_2 \n\t" \
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249 " xori r18, r7, 107 \n\t" \
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250 " bnei r18, Error_Loop_2 \n\t" \
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251 " xori r18, r8, 108 \n\t" \
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252 " bnei r18, Error_Loop_2 \n\t" \
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253 " xori r18, r9, 109 \n\t" \
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254 " bnei r18, Error_Loop_2 \n\t" \
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255 " xori r18, r10, 1010 \n\t" \
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256 " bnei r18, Error_Loop_2 \n\t" \
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257 " xori r18, r11, 1011 \n\t" \
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258 " bnei r18, Error_Loop_2 \n\t" \
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259 " xori r18, r12, 1012 \n\t" \
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260 " bnei r18, Error_Loop_2 \n\t" \
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261 " xori r18, r16, 1016 \n\t" \
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262 " bnei r18, Error_Loop_2 \n\t" \
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263 " xori r18, r19, 1019 \n\t" \
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264 " bnei r18, Error_Loop_2 \n\t" \
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265 " xori r18, r20, 1020 \n\t" \
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266 " bnei r18, Error_Loop_2 \n\t" \
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267 " xori r18, r21, 1021 \n\t" \
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268 " bnei r18, Error_Loop_2 \n\t" \
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269 " xori r18, r22, 1022 \n\t" \
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270 " bnei r18, Error_Loop_2 \n\t" \
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271 " xori r18, r23, 1023 \n\t" \
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272 " bnei r18, Error_Loop_2 \n\t" \
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273 " xori r18, r24, 1024 \n\t" \
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274 " bnei r18, Error_Loop_2 \n\t" \
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275 " xori r18, r25, 1025 \n\t" \
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276 " bnei r18, Error_Loop_2 \n\t" \
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277 " xori r18, r26, 1026 \n\t" \
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278 " bnei r18, Error_Loop_2 \n\t" \
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279 " xori r18, r27, 1027 \n\t" \
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280 " bnei r18, Error_Loop_2 \n\t" \
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281 " xori r18, r28, 1028 \n\t" \
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282 " bnei r18, Error_Loop_2 \n\t" \
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283 " xori r18, r29, 1029 \n\t" \
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284 " bnei r18, Error_Loop_2 \n\t" \
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285 " xori r18, r30, 1030 \n\t" \
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286 " bnei r18, Error_Loop_2 \n\t" \
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287 " xori r18, r31, 1031 \n\t" \
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288 " bnei r18, Error_Loop_2 \n\t"
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291 /* If this task has not branched to the error loop, then everything is ok,
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292 and the check variable should be incremented to indicate that this task
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293 is still running. Then, brach back to the top to check the registers
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295 asm volatile ( " lwi r18, r0, ulRegTest2CycleCount \n\t" \
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296 " addik r18, r18, 1 \n\t" \
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297 " swi r18, r0, ulRegTest2CycleCount \n\t" \
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299 " bri Loop_Start_2 "
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302 /* The test function will branch here if it discovers an error. This part
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303 of the code just sits in a NULL loop, which prevents the check variable
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304 incrementing any further to allow the check timer to recognize that this
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305 test has failed. */
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306 asm volatile ( "Error_Loop_2: \n\t" \
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311 ( void ) pvParameters;
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