git.sur5r.net Git - freertos/blob - FreeRTOS/Demo/CORTEX_M7_SAMV71_Xplained_AtmelStudio/Full_Demo/RegTest_GCC.c

   1 /*\r
   2  * FreeRTOS Kernel V10.3.0\r
   3  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.\r
   4  *\r
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy of\r
   6  * this software and associated documentation files (the "Software"), to deal in\r
   7  * the Software without restriction, including without limitation the rights to\r
   8  * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of\r
   9  * the Software, and to permit persons to whom the Software is furnished to do so,\r
  10  * subject to the following conditions:\r
  11  *\r
  12  * The above copyright notice and this permission notice shall be included in all\r
  13  * copies or substantial portions of the Software.\r
  14  *\r
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS\r
  17  * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR\r
  18  * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
  19  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
  20  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
  21  *\r
  22  * http://www.FreeRTOS.org\r
  23  * http://aws.amazon.com/freertos\r
  24  *\r
  25  * 1 tab == 4 spaces!\r
  26  */\r
  27 \r
  28 /*\r
  29  * "Reg test" tasks - These fill the registers with known values, then check\r
  30  * that each register maintains its expected value for the lifetime of the\r
  31  * task.  Each task uses a different set of values.  The reg test tasks execute\r
  32  * with a very low priority, so get preempted very frequently.  A register\r
  33  * containing an unexpected value is indicative of an error in the context\r
  34  * switching mechanism.\r
  35  */\r
  36 \r
  37 void vRegTest1Implementation( void ) __attribute__ ((naked));\r
  38 void vRegTest2Implementation( void ) __attribute__ ((naked));\r
  39 \r
  40 void vRegTest1Implementation( void )\r
  41 {\r
  42         __asm volatile\r
  43         (\r
  44                 ".extern ulRegTest1LoopCounter \n"\r
  45                 "/* Fill the core registers with known values. */               \n"\r
  46                 "mov    r0, #100                        \n"\r
  47                 "mov    r1, #101                        \n"\r
  48                 "mov    r2, #102                        \n"\r
  49                 "mov    r3, #103                        \n"\r
  50                 "mov    r4, #104                        \n"\r
  51                 "mov    r5, #105                        \n"\r
  52                 "mov    r6, #106                        \n"\r
  53                 "mov    r7, #107                        \n"\r
  54                 "mov    r8, #108                        \n"\r
  55                 "mov    r9, #109                        \n"\r
  56                 "mov    r10, #110                       \n"\r
  57                 "mov    r11, #111                       \n"\r
  58                 "mov    r12, #112                       \n"\r
  59 \r
  60                 "/* Fill the VFP registers with known values. */                \n"\r
  61                 "vmov   d0, r0, r1                      \n"\r
  62                 "vmov   d1, r2, r3                      \n"\r
  63                 "vmov   d2, r4, r5                      \n"\r
  64                 "vmov   d3, r6, r7                      \n"\r
  65                 "vmov   d4, r8, r9                      \n"\r
  66                 "vmov   d5, r10, r11            \n"\r
  67                 "vmov   d6, r0, r1                      \n"\r
  68                 "vmov   d7, r2, r3                      \n"\r
  69                 "vmov   d8, r4, r5                      \n"\r
  70                 "vmov   d9, r6, r7                      \n"\r
  71                 "vmov   d10, r8, r9                     \n"\r
  72                 "vmov   d11, r10, r11           \n"\r
  73                 "vmov   d12, r0, r1                     \n"\r
  74                 "vmov   d13, r2, r3                     \n"\r
  75                 "vmov   d14, r4, r5                     \n"\r
  76                 "vmov   d15, r6, r7                     \n"\r
  77 \r
  78         "reg1_loop:                                             \n"\r
  79                 "/* Check all the VFP registers still contain the values set above.             \n"\r
  80                 "First save registers that are clobbered by the test. */                                \n"\r
  81                 "push { r0-r1 }                         \n"\r
  82 \r
  83                 "vmov   r0, r1, d0                      \n"\r
  84                 "cmp    r0, #100                        \n"\r
  85                 "bne    reg1_error_loopf        \n"\r
  86                 "cmp    r1, #101                        \n"\r
  87                 "bne    reg1_error_loopf        \n"\r
  88                 "vmov   r0, r1, d1                      \n"\r
  89                 "cmp    r0, #102                        \n"\r
  90                 "bne    reg1_error_loopf        \n"\r
  91                 "cmp    r1, #103                        \n"\r
  92                 "bne    reg1_error_loopf        \n"\r
  93                 "vmov   r0, r1, d2                      \n"\r
  94                 "cmp    r0, #104                        \n"\r
  95                 "bne    reg1_error_loopf        \n"\r
  96                 "cmp    r1, #105                        \n"\r
  97                 "bne    reg1_error_loopf        \n"\r
  98                 "vmov   r0, r1, d3                      \n"\r
  99                 "cmp    r0, #106                        \n"\r
 100                 "bne    reg1_error_loopf        \n"\r
 101                 "cmp    r1, #107                        \n"\r
 102                 "bne    reg1_error_loopf        \n"\r
 103                 "vmov   r0, r1, d4                      \n"\r
 104                 "cmp    r0, #108                        \n"\r
 105                 "bne    reg1_error_loopf        \n"\r
 106                 "cmp    r1, #109                        \n"\r
 107                 "bne    reg1_error_loopf        \n"\r
 108                 "vmov   r0, r1, d5                      \n"\r
 109                 "cmp    r0, #110                        \n"\r
 110                 "bne    reg1_error_loopf        \n"\r
 111                 "cmp    r1, #111                        \n"\r
 112                 "bne    reg1_error_loopf        \n"\r
 113                 "vmov   r0, r1, d6                      \n"\r
 114                 "cmp    r0, #100                        \n"\r
 115                 "bne    reg1_error_loopf        \n"\r
 116                 "cmp    r1, #101                        \n"\r
 117                 "bne    reg1_error_loopf        \n"\r
 118                 "vmov   r0, r1, d7                      \n"\r
 119                 "cmp    r0, #102                        \n"\r
 120                 "bne    reg1_error_loopf        \n"\r
 121                 "cmp    r1, #103                        \n"\r
 122                 "bne    reg1_error_loopf        \n"\r
 123                 "vmov   r0, r1, d8                      \n"\r
 124                 "cmp    r0, #104                        \n"\r
 125                 "bne    reg1_error_loopf        \n"\r
 126                 "cmp    r1, #105                        \n"\r
 127                 "bne    reg1_error_loopf        \n"\r
 128                 "vmov   r0, r1, d9                      \n"\r
 129                 "cmp    r0, #106                        \n"\r
 130                 "bne    reg1_error_loopf        \n"\r
 131                 "cmp    r1, #107                        \n"\r
 132                 "bne    reg1_error_loopf        \n"\r
 133                 "vmov   r0, r1, d10                     \n"\r
 134                 "cmp    r0, #108                        \n"\r
 135                 "bne    reg1_error_loopf        \n"\r
 136                 "cmp    r1, #109                        \n"\r
 137                 "bne    reg1_error_loopf        \n"\r
 138                 "vmov   r0, r1, d11                     \n"\r
 139                 "cmp    r0, #110                        \n"\r
 140                 "bne    reg1_error_loopf        \n"\r
 141                 "cmp    r1, #111                        \n"\r
 142                 "bne    reg1_error_loopf        \n"\r
 143                 "vmov   r0, r1, d12                     \n"\r
 144                 "cmp    r0, #100                        \n"\r
 145                 "bne    reg1_error_loopf        \n"\r
 146                 "cmp    r1, #101                        \n"\r
 147                 "bne    reg1_error_loopf        \n"\r
 148                 "vmov   r0, r1, d13                     \n"\r
 149                 "cmp    r0, #102                        \n"\r
 150                 "bne    reg1_error_loopf        \n"\r
 151                 "cmp    r1, #103                        \n"\r
 152                 "bne    reg1_error_loopf        \n"\r
 153                 "vmov   r0, r1, d14                     \n"\r
 154                 "cmp    r0, #104                        \n"\r
 155                 "bne    reg1_error_loopf        \n"\r
 156                 "cmp    r1, #105                        \n"\r
 157                 "bne    reg1_error_loopf        \n"\r
 158                 "vmov   r0, r1, d15                     \n"\r
 159                 "cmp    r0, #106                        \n"\r
 160                 "bne    reg1_error_loopf        \n"\r
 161                 "cmp    r1, #107                        \n"\r
 162                 "bne    reg1_error_loopf        \n"\r
 163 \r
 164                 "/* Restore the registers that were clobbered by the test. */           \n"\r
 165                 "pop    {r0-r1}                         \n"\r
 166 \r
 167                 "/* VFP register test passed.  Jump to the core register test. */       \n"\r
 168                 "b              reg1_loopf_pass         \n"\r
 169 \r
 170         "reg1_error_loopf:                              \n"\r
 171                 "/* If this line is hit then a VFP register value was found to be incorrect. */         \n"\r
 172                 "b reg1_error_loopf                     \n"\r
 173 \r
 174         "reg1_loopf_pass:                               \n"\r
 175 \r
 176                 "cmp    r0, #100                        \n"\r
 177                 "bne    reg1_error_loop         \n"\r
 178                 "cmp    r1, #101                        \n"\r
 179                 "bne    reg1_error_loop         \n"\r
 180                 "cmp    r2, #102                        \n"\r
 181                 "bne    reg1_error_loop         \n"\r
 182                 "cmp    r3, #103                        \n"\r
 183                 "bne    reg1_error_loop         \n"\r
 184                 "cmp    r4, #104                        \n"\r
 185                 "bne    reg1_error_loop         \n"\r
 186                 "cmp    r5, #105                        \n"\r
 187                 "bne    reg1_error_loop         \n"\r
 188                 "cmp    r6, #106                        \n"\r
 189                 "bne    reg1_error_loop         \n"\r
 190                 "cmp    r7, #107                        \n"\r
 191                 "bne    reg1_error_loop         \n"\r
 192                 "cmp    r8, #108                        \n"\r
 193                 "bne    reg1_error_loop         \n"\r
 194                 "cmp    r9, #109                        \n"\r
 195                 "bne    reg1_error_loop         \n"\r
 196                 "cmp    r10, #110                       \n"\r
 197                 "bne    reg1_error_loop         \n"\r
 198                 "cmp    r11, #111                       \n"\r
 199                 "bne    reg1_error_loop         \n"\r
 200                 "cmp    r12, #112                       \n"\r
 201                 "bne    reg1_error_loop         \n"\r
 202 \r
 203                 "/* Everything passed, increment the loop counter. */   \n"\r
 204                 "push   { r0-r1 }                       \n"\r
 205                 "ldr    r0, =ulRegTest1LoopCounter      \n"\r
 206                 "ldr    r1, [r0]                        \n"\r
 207                 "adds   r1, r1, #1                      \n"\r
 208                 "str    r1, [r0]                        \n"\r
 209                 "pop    { r0-r1 }                       \n"\r
 210 \r
 211                 "/* Start again. */                     \n"\r
 212                 "b              reg1_loop                       \n"\r
 213 \r
 214         "reg1_error_loop:                               \n"\r
 215                 "/* If this line is hit then there was an error in a core register value. \n"\r
 216                 "The loop ensures the loop counter stops incrementing. */       \n"\r
 217                 "b      reg1_error_loop                 \n"\r
 218                 "nop                                            "\r
 219         ); /* __asm volatile. */\r
 220 }\r
 221 /*-----------------------------------------------------------*/\r
 222 \r
 223 void vRegTest2Implementation( void )\r
 224 {\r
 225         __asm volatile\r
 226         (\r
 227                 ".extern ulRegTest2LoopCounter \n"\r
 228                 "/* Set all the core registers to known values. */      \n"\r
 229                 "mov    r0, #-1                         \n"\r
 230                 "mov    r1, #1                          \n"\r
 231                 "mov    r2, #2                          \n"\r
 232                 "mov    r3, #3                          \n"\r
 233                 "mov    r4, #4                          \n"\r
 234                 "mov    r5, #5                          \n"\r
 235                 "mov    r6, #6                          \n"\r
 236                 "mov    r7, #7                          \n"\r
 237                 "mov    r8, #8                          \n"\r
 238                 "mov    r9, #9                          \n"\r
 239                 "mov    r10, #10                        \n"\r
 240                 "mov    r11, #11                        \n"\r
 241                 "mov    r12, #12                        \n"\r
 242 \r
 243                 "/* Set all the VFP to known values. */  \n"\r
 244                 "vmov   d0, r0, r1                      \n"\r
 245                 "vmov   d1, r2, r3                      \n"\r
 246                 "vmov   d2, r4, r5                      \n"\r
 247                 "vmov   d3, r6, r7                      \n"\r
 248                 "vmov   d4, r8, r9                      \n"\r
 249                 "vmov   d5, r10, r11            \n"\r
 250                 "vmov   d6, r0, r1                      \n"\r
 251                 "vmov   d7, r2, r3                      \n"\r
 252                 "vmov   d8, r4, r5                      \n"\r
 253                 "vmov   d9, r6, r7                      \n"\r
 254                 "vmov   d10, r8, r9                     \n"\r
 255                 "vmov   d11, r10, r11           \n"\r
 256                 "vmov   d12, r0, r1                     \n"\r
 257                 "vmov   d13, r2, r3                     \n"\r
 258                 "vmov   d14, r4, r5                     \n"\r
 259                 "vmov   d15, r6, r7                     \n"\r
 260 \r
 261         "reg2_loop:                                             \n"\r
 262 \r
 263                 "/* Check all the VFP registers still contain the values set above.             \n"\r
 264                 "First save registers that are clobbered by the test. */                                \n"\r
 265                 "push { r0-r1 }                         \n"\r
 266 \r
 267                 "vmov   r0, r1, d0                      \n"\r
 268                 "cmp    r0, #-1                         \n"\r
 269                 "bne    reg2_error_loopf        \n"\r
 270                 "cmp    r1, #1                          \n"\r
 271                 "bne    reg2_error_loopf        \n"\r
 272                 "vmov   r0, r1, d1                      \n"\r
 273                 "cmp    r0, #2                          \n"\r
 274                 "bne    reg2_error_loopf        \n"\r
 275                 "cmp    r1, #3                          \n"\r
 276                 "bne    reg2_error_loopf        \n"\r
 277                 "vmov   r0, r1, d2                      \n"\r
 278                 "cmp    r0, #4                          \n"\r
 279                 "bne    reg2_error_loopf        \n"\r
 280                 "cmp    r1, #5                          \n"\r
 281                 "bne    reg2_error_loopf        \n"\r
 282                 "vmov   r0, r1, d3                      \n"\r
 283                 "cmp    r0, #6                          \n"\r
 284                 "bne    reg2_error_loopf        \n"\r
 285                 "cmp    r1, #7                          \n"\r
 286                 "bne    reg2_error_loopf        \n"\r
 287                 "vmov   r0, r1, d4                      \n"\r
 288                 "cmp    r0, #8                          \n"\r
 289                 "bne    reg2_error_loopf        \n"\r
 290                 "cmp    r1, #9                          \n"\r
 291                 "bne    reg2_error_loopf        \n"\r
 292                 "vmov   r0, r1, d5                      \n"\r
 293                 "cmp    r0, #10                         \n"\r
 294                 "bne    reg2_error_loopf        \n"\r
 295                 "cmp    r1, #11                         \n"\r
 296                 "bne    reg2_error_loopf        \n"\r
 297                 "vmov   r0, r1, d6                      \n"\r
 298                 "cmp    r0, #-1                         \n"\r
 299                 "bne    reg2_error_loopf        \n"\r
 300                 "cmp    r1, #1                          \n"\r
 301                 "bne    reg2_error_loopf        \n"\r
 302                 "vmov   r0, r1, d7                      \n"\r
 303                 "cmp    r0, #2                          \n"\r
 304                 "bne    reg2_error_loopf        \n"\r
 305                 "cmp    r1, #3                          \n"\r
 306                 "bne    reg2_error_loopf        \n"\r
 307                 "vmov   r0, r1, d8                      \n"\r
 308                 "cmp    r0, #4                          \n"\r
 309                 "bne    reg2_error_loopf        \n"\r
 310                 "cmp    r1, #5                          \n"\r
 311                 "bne    reg2_error_loopf        \n"\r
 312                 "vmov   r0, r1, d9                      \n"\r
 313                 "cmp    r0, #6                          \n"\r
 314                 "bne    reg2_error_loopf        \n"\r
 315                 "cmp    r1, #7                          \n"\r
 316                 "bne    reg2_error_loopf        \n"\r
 317                 "vmov   r0, r1, d10                     \n"\r
 318                 "cmp    r0, #8                          \n"\r
 319                 "bne    reg2_error_loopf        \n"\r
 320                 "cmp    r1, #9                          \n"\r
 321                 "bne    reg2_error_loopf        \n"\r
 322                 "vmov   r0, r1, d11                     \n"\r
 323                 "cmp    r0, #10                         \n"\r
 324                 "bne    reg2_error_loopf        \n"\r
 325                 "cmp    r1, #11                         \n"\r
 326                 "bne    reg2_error_loopf        \n"\r
 327                 "vmov   r0, r1, d12                     \n"\r
 328                 "cmp    r0, #-1                         \n"\r
 329                 "bne    reg2_error_loopf        \n"\r
 330                 "cmp    r1, #1                          \n"\r
 331                 "bne    reg2_error_loopf        \n"\r
 332                 "vmov   r0, r1, d13                     \n"\r
 333                 "cmp    r0, #2                          \n"\r
 334                 "bne    reg2_error_loopf        \n"\r
 335                 "cmp    r1, #3                          \n"\r
 336                 "bne    reg2_error_loopf        \n"\r
 337                 "vmov   r0, r1, d14                     \n"\r
 338                 "cmp    r0, #4                          \n"\r
 339                 "bne    reg2_error_loopf        \n"\r
 340                 "cmp    r1, #5                          \n"\r
 341                 "bne    reg2_error_loopf        \n"\r
 342                 "vmov   r0, r1, d15                     \n"\r
 343                 "cmp    r0, #6                          \n"\r
 344                 "bne    reg2_error_loopf        \n"\r
 345                 "cmp    r1, #7                          \n"\r
 346                 "bne    reg2_error_loopf        \n"\r
 347 \r
 348                 "/* Restore the registers that were clobbered by the test. */           \n"\r
 349                 "pop    {r0-r1}                         \n"\r
 350 \r
 351                 "/* VFP register test passed.  Jump to the core register test. */               \n"\r
 352                 "b              reg2_loopf_pass         \n"\r
 353 \r
 354         "reg2_error_loopf:                              \n"\r
 355                 "/* If this line is hit then a VFP register value was found to be               \n"\r
 356                 "incorrect. */                          \n"\r
 357                 "b reg2_error_loopf                     \n"\r
 358 \r
 359         "reg2_loopf_pass:                               \n"\r
 360 \r
 361                 "cmp    r0, #-1                         \n"\r
 362                 "bne    reg2_error_loop         \n"\r
 363                 "cmp    r1, #1                          \n"\r
 364                 "bne    reg2_error_loop         \n"\r
 365                 "cmp    r2, #2                          \n"\r
 366                 "bne    reg2_error_loop         \n"\r
 367                 "cmp    r3, #3                          \n"\r
 368                 "bne    reg2_error_loop         \n"\r
 369                 "cmp    r4, #4                          \n"\r
 370                 "bne    reg2_error_loop         \n"\r
 371                 "cmp    r5, #5                          \n"\r
 372                 "bne    reg2_error_loop         \n"\r
 373                 "cmp    r6, #6                          \n"\r
 374                 "bne    reg2_error_loop         \n"\r
 375                 "cmp    r7, #7                          \n"\r
 376                 "bne    reg2_error_loop         \n"\r
 377                 "cmp    r8, #8                          \n"\r
 378                 "bne    reg2_error_loop         \n"\r
 379                 "cmp    r9, #9                          \n"\r
 380                 "bne    reg2_error_loop         \n"\r
 381                 "cmp    r10, #10                        \n"\r
 382                 "bne    reg2_error_loop         \n"\r
 383                 "cmp    r11, #11                        \n"\r
 384                 "bne    reg2_error_loop         \n"\r
 385                 "cmp    r12, #12                        \n"\r
 386                 "bne    reg2_error_loop         \n"\r
 387 \r
 388                 "/* Increment the loop counter to indicate this test is still functioning       \n"\r
 389                 "correctly. */                          \n"\r
 390                 "push   { r0-r1 }                       \n"\r
 391                 "ldr    r0, =ulRegTest2LoopCounter      \n"\r
 392                 "ldr    r1, [r0]                        \n"\r
 393                 "adds   r1, r1, #1                      \n"\r
 394                 "str    r1, [r0]                        \n"\r
 395 \r
 396                 "/* Yield to increase test coverage. */                 \n"\r
 397                 "movs   r0, #0x01                       \n"\r
 398                 "ldr    r1, =0xe000ed04 /*NVIC_INT_CTRL */              \n"\r
 399                 "lsl    r0, r0, #28 /* Shift to PendSV bit */   \n"\r
 400                 "str    r0, [r1]                        \n"\r
 401                 "dsb                                            \n"\r
 402 \r
 403                 "pop { r0-r1 }                          \n"\r
 404 \r
 405                 "/* Start again. */                     \n"\r
 406                 "b reg2_loop                            \n"\r
 407 \r
 408         "reg2_error_loop:                               \n"\r
 409                 "/* If this line is hit then there was an error in a core register value.       \n"\r
 410                 "This loop ensures the loop counter variable stops incrementing. */                     \n"\r
 411                 "b reg2_error_loop                      \n"\r
 412         ); /* __asm volatile */\r
 413 }\r
 414 /*-----------------------------------------------------------*/\r
 415 \r