text: /* Copyright (c) 2015 Nordic Semiconductor. All Rights Reserved.
   *
   * The information contained herein is property of Nordic Semiconductor ASA.
   * Terms and conditions of usage are described in detail in NORDIC
   * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
   *
   * Licensees are granted free, non-transferable use of the information. NO
   * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
   * the file.
   *
   */
  #include <stdint.h>
  
  #pragma section = "CSTACK"
  extern void HardFault_c_handler( uint32_t * );
  
  __stackless void HardFault_Handler(void);
  
  __stackless void HardFault_Handler(void)
  {
      __asm volatile(
      "   ldr   r0, 100f                         \n"
      "   cmp   r0, lr                           \n"
      "   bne   1f                               \n"
      /* Reading PSP into R0 */
      "   mrs   r0, PSP                          \n"
      "   b     3f                               \n"
      "1:                                        \n"
      /* Reading MSP into R0 */
      "   mrs   r0, MSP                          \n"
      /* -----------------------------------------------------------------
       * If we have selected MSP check if we may use stack safetly.
       * If not - reset the stack to the initial value. */
      "   ldr   r1, 101f                         \n"
      "   ldr   r2, 102f                         \n"
  
      /* MSP is in the range of <__StackTop, __StackLimit) */
      "   cmp   r0, r1                           \n"
      "   bhi   2f                               \n"
      "   cmp   r0, r2                           \n"
      "   bhi   3f                               \n"
      /* ----------------------------------------------------------------- */
      "2:                                        \n"
      "   mov   SP, r1                           \n"
      "   movs  r0, #0                           \n"
  
      "3:                                        \n"
      "   ldr r3, 103f                           \n"
      "   bx r3                                  \n"
  
      "100:                                      \n"
      "   DC32 0xFFFFFFFD                        \n"
      "101:                                      \n"
      "   DC32 %c0                               \n"
      "102:                                      \n"
      "   DC32 %c1                               \n"
      "103:                                      \n"
      "   DC32 %c2                               \n"
      : /* Outputs */
      : /* Inputs */
      "i"(__section_end("CSTACK")),
      "i"(__section_begin("CSTACK")),
      "i"(&HardFault_c_handler)
      );
  }
  