hardfault_handler_iar.c 4.0 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697
  1. /**
  2. * Copyright (c) 2015 - 2020, Nordic Semiconductor ASA
  3. *
  4. * All rights reserved.
  5. *
  6. * Redistribution and use in source and binary forms, with or without modification,
  7. * are permitted provided that the following conditions are met:
  8. *
  9. * 1. Redistributions of source code must retain the above copyright notice, this
  10. * list of conditions and the following disclaimer.
  11. *
  12. * 2. Redistributions in binary form, except as embedded into a Nordic
  13. * Semiconductor ASA integrated circuit in a product or a software update for
  14. * such product, must reproduce the above copyright notice, this list of
  15. * conditions and the following disclaimer in the documentation and/or other
  16. * materials provided with the distribution.
  17. *
  18. * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
  19. * contributors may be used to endorse or promote products derived from this
  20. * software without specific prior written permission.
  21. *
  22. * 4. This software, with or without modification, must only be used with a
  23. * Nordic Semiconductor ASA integrated circuit.
  24. *
  25. * 5. Any software provided in binary form under this license must not be reverse
  26. * engineered, decompiled, modified and/or disassembled.
  27. *
  28. * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
  29. * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  30. * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
  31. * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
  32. * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  33. * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  34. * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  37. * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  38. *
  39. */
  40. #include "sdk_common.h"
  41. #if NRF_MODULE_ENABLED(HARDFAULT_HANDLER)
  42. #include <stdint.h>
  43. #include "compiler_abstraction.h"
  44. #pragma section = "CSTACK"
  45. extern void HardFault_c_handler( uint32_t * );
  46. __stackless void HardFault_Handler(void);
  47. __stackless void HardFault_Handler(void)
  48. {
  49. __ASM volatile(
  50. " ldr.n r3, 103f \n"
  51. " tst lr, #4 \n"
  52. /* PSP is quite simple and does not require additional handler */
  53. " itt ne \n"
  54. " mrsne r0, psp \n"
  55. /* Jump to the handler, do not store LR - returning from handler just exits exception */
  56. " bxne r3 \n"
  57. /* Processing MSP requires stack checking */
  58. " mrs r0, msp \n"
  59. " ldr.n r1, 101f \n"
  60. " ldr.n r2, 102f \n"
  61. /* MSP is in the range of the stack area */
  62. " cmp r0, r1 \n"
  63. " bhi.n 1f \n"
  64. " cmp r0, r2 \n"
  65. " bhi.n 2f \n"
  66. "1: \n"
  67. " mov sp, r1 \n"
  68. " mov r0, #0 \n"
  69. "2: \n"
  70. " bx r3 \n"
  71. /* Data alignment if required */
  72. " nop \n"
  73. "DATA \n"
  74. "101: \n"
  75. " DC32 %c0 \n"
  76. "102: \n"
  77. " DC32 %c1 \n"
  78. "103: \n"
  79. " DC32 %c2 \n"
  80. : /* Outputs */
  81. : /* Inputs */
  82. "i"(__section_end("CSTACK")),
  83. "i"(__section_begin("CSTACK")),
  84. "i"(&HardFault_c_handler)
  85. );
  86. }
  87. #endif //NRF_MODULE_ENABLED(HARDFAULT_HANDLER)