hardfault_handler_gcc.c 3.8 KB

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  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. extern void HardFault_c_handler(uint32_t *);
  45. void HardFault_Handler(void) __attribute__(( naked ));
  46. void HardFault_Handler(void)
  47. {
  48. __ASM volatile(
  49. " .syntax unified \n"
  50. " ldr r0, =0xFFFFFFFD \n"
  51. " cmp r0, lr \n"
  52. " bne HardFault_Handler_ChooseMSP \n"
  53. /* Reading PSP into R0 */
  54. " mrs r0, PSP \n"
  55. " b HardFault_Handler_Continue \n"
  56. "HardFault_Handler_ChooseMSP: \n"
  57. /* Reading MSP into R0 */
  58. " mrs r0, MSP \n"
  59. /* -----------------------------------------------------------------
  60. * If we have selected MSP check if we may use stack safetly.
  61. * If not - reset the stack to the initial value. */
  62. " ldr r1, =__StackTop \n"
  63. " ldr r2, =__StackLimit \n"
  64. /* MSP is in the range of the stack area */
  65. " cmp r0, r1 \n"
  66. " bhi HardFault_MoveSP \n"
  67. " cmp r0, r2 \n"
  68. " bhi HardFault_Handler_Continue \n"
  69. /* ----------------------------------------------------------------- */
  70. "HardFault_MoveSP: \n"
  71. " mov SP, r1 \n"
  72. " movs r0, #0 \n"
  73. "HardFault_Handler_Continue: \n"
  74. " ldr r3, =%0 \n"
  75. " bx r3 \n"
  76. " .ltorg \n"
  77. : : "X"(HardFault_c_handler)
  78. );
  79. }
  80. #endif //NRF_MODULE_ENABLED(HARDFAULT_HANDLER)