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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39 __asm void vRegTest1Implementation( void )
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42 IMPORT ulRegTest1LoopCounter
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44 /* Fill the core registers with known values. */
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59 /* Fill the VFP registers with known values. */
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78 /* Check all the VFP registers still contain the values set above.
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79 First save registers that are clobbered by the test. */
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84 bne reg1_error_loopf
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86 bne reg1_error_loopf
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89 bne reg1_error_loopf
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91 bne reg1_error_loopf
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94 bne reg1_error_loopf
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96 bne reg1_error_loopf
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99 bne reg1_error_loopf
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101 bne reg1_error_loopf
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104 bne reg1_error_loopf
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106 bne reg1_error_loopf
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109 bne reg1_error_loopf
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111 bne reg1_error_loopf
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114 bne reg1_error_loopf
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116 bne reg1_error_loopf
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119 bne reg1_error_loopf
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121 bne reg1_error_loopf
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124 bne reg1_error_loopf
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126 bne reg1_error_loopf
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129 bne reg1_error_loopf
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131 bne reg1_error_loopf
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134 bne reg1_error_loopf
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136 bne reg1_error_loopf
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139 bne reg1_error_loopf
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141 bne reg1_error_loopf
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144 bne reg1_error_loopf
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146 bne reg1_error_loopf
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149 bne reg1_error_loopf
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151 bne reg1_error_loopf
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154 bne reg1_error_loopf
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156 bne reg1_error_loopf
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159 bne reg1_error_loopf
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161 bne reg1_error_loopf
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163 /* Restore the registers that were clobbered by the test. */
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166 /* VFP register test passed. Jump to the core register test. */
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170 /* If this line is hit then a VFP register value was found to be
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177 bne reg1_error_loop
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179 bne reg1_error_loop
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181 bne reg1_error_loop
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183 bne reg1_error_loop
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185 bne reg1_error_loop
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187 bne reg1_error_loop
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189 bne reg1_error_loop
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191 bne reg1_error_loop
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193 bne reg1_error_loop
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195 bne reg1_error_loop
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197 bne reg1_error_loop
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199 bne reg1_error_loop
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201 bne reg1_error_loop
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203 /* Everything passed, increment the loop counter. */
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205 ldr r0, =ulRegTest1LoopCounter
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215 /* If this line is hit then there was an error in a core register value.
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216 The loop ensures the loop counter stops incrementing. */
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220 /*-----------------------------------------------------------*/
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222 __asm void vRegTest2Implementation( void )
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225 IMPORT ulRegTest2LoopCounter
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227 /* Set all the core registers to known values. */
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242 /* Set all the VFP to known values. */
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262 /* Check all the VFP registers still contain the values set above.
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263 First save registers that are clobbered by the test. */
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268 bne reg2_error_loopf
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270 bne reg2_error_loopf
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273 bne reg2_error_loopf
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275 bne reg2_error_loopf
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278 bne reg2_error_loopf
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280 bne reg2_error_loopf
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283 bne reg2_error_loopf
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285 bne reg2_error_loopf
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288 bne reg2_error_loopf
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290 bne reg2_error_loopf
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293 bne reg2_error_loopf
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295 bne reg2_error_loopf
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298 bne reg2_error_loopf
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300 bne reg2_error_loopf
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303 bne reg2_error_loopf
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305 bne reg2_error_loopf
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308 bne reg2_error_loopf
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310 bne reg2_error_loopf
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313 bne reg2_error_loopf
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315 bne reg2_error_loopf
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318 bne reg2_error_loopf
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320 bne reg2_error_loopf
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323 bne reg2_error_loopf
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325 bne reg2_error_loopf
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328 bne reg2_error_loopf
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330 bne reg2_error_loopf
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333 bne reg2_error_loopf
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335 bne reg2_error_loopf
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338 bne reg2_error_loopf
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340 bne reg2_error_loopf
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343 bne reg2_error_loopf
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345 bne reg2_error_loopf
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347 /* Restore the registers that were clobbered by the test. */
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350 /* VFP register test passed. Jump to the core register test. */
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354 /* If this line is hit then a VFP register value was found to be
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361 bne reg2_error_loop
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363 bne reg2_error_loop
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365 bne reg2_error_loop
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367 bne reg2_error_loop
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369 bne reg2_error_loop
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371 bne reg2_error_loop
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373 bne reg2_error_loop
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375 bne reg2_error_loop
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377 bne reg2_error_loop
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379 bne reg2_error_loop
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381 bne reg2_error_loop
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383 bne reg2_error_loop
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385 bne reg2_error_loop
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387 /* Increment the loop counter to indicate this test is still functioning
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390 ldr r0, =ulRegTest2LoopCounter
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395 /* Yield to increase test coverage. */
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397 ldr r1, =0xe000ed04 /*NVIC_INT_CTRL */
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398 lsl r0, r0, #28 /* Shift to PendSV bit */
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408 /* If this line is hit then there was an error in a core register value.
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409 This loop ensures the loop counter variable stops incrementing. */
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412 /*-----------------------------------------------------------*/
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