2 * FreeRTOS Kernel V10.0.0
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3 * Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
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6 * this software and associated documentation files (the "Software"), to deal in
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7 * the Software without restriction, including without limitation the rights to
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8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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9 * the Software, and to permit persons to whom the Software is furnished to do so,
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10 * subject to the following conditions:
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12 * The above copyright notice and this permission notice shall be included in all
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13 * copies or substantial portions of the Software. If you wish to use our Amazon
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14 * FreeRTOS name, please do so in a fair use way that does not cause confusion.
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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18 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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19 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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20 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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23 * http://www.FreeRTOS.org
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24 * http://aws.amazon.com/freertos
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26 * 1 tab == 4 spaces!
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30 * "Reg test" tasks - These fill the registers with known values, then check
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31 * that each register maintains its expected value for the lifetime of the
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32 * task. Each task uses a different set of values. The reg test tasks execute
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33 * with a very low priority, so get preempted very frequently. A register
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34 * containing an unexpected value is indicative of an error in the context
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35 * switching mechanism.
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42 EXTERN ulRegTest1LoopCounter
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43 EXTERN ulRegTest2LoopCounter
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45 PUBLIC vRegTest1Task
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46 PUBLIC vRegTest2Task
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48 /*-----------------------------------------------------------*/
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51 /* Fill the core registers with known values. This is only done once. */
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72 /* Repeatedly check that each register still contains the value written to
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73 it when the task started. */
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101 bne reg1_error_loop
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104 bne reg1_error_loop
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106 /* Everything passed, increment the loop counter. */
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108 ldr r0, =ulRegTest1LoopCounter
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113 /* Yield to increase test coverage. */
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115 ldr r1, =0xe000ed04 /* NVIC_INT_CTRL */
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116 lsls r0 ,r0, #28 /* Shift to PendSV bit */
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126 /* If this line is hit then there was an error in a core register value.
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127 The loop ensures the loop counter stops incrementing. */
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135 /* Fill the core registers with known values. This is only done once. */
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156 /* Repeatedly check that each register still contains the value written to
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157 it when the task started. */
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159 bne reg2_error_loop
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161 bne reg2_error_loop
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163 bne reg2_error_loop
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165 bne reg2_error_loop
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167 bne reg2_error_loop
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169 bne reg2_error_loop
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171 bne reg2_error_loop
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173 bne reg2_error_loop
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176 bne reg2_error_loop
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179 bne reg2_error_loop
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182 bne reg2_error_loop
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185 bne reg2_error_loop
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188 bne reg2_error_loop
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190 /* Everything passed, increment the loop counter. */
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192 ldr r0, =ulRegTest2LoopCounter
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203 ;/* If this line is hit then there was an error in a core register value.
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204 ;The loop ensures the loop counter stops incrementing. */
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