text: /**
   * Copyright (c) 2015 - 2017, Nordic Semiconductor ASA
   * 
   * All rights reserved.
   * 
   * Redistribution and use in source and binary forms, with or without modification,
   * are permitted provided that the following conditions are met:
   * 
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   * 
   * 2. Redistributions in binary form, except as embedded into a Nordic
   *    Semiconductor ASA integrated circuit in a product or a software update for
   *    such product, must reproduce the above copyright notice, this list of
   *    conditions and the following disclaimer in the documentation and/or other
   *    materials provided with the distribution.
   * 
   * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
   *    contributors may be used to endorse or promote products derived from this
   *    software without specific prior written permission.
   * 
   * 4. This software, with or without modification, must only be used with a
   *    Nordic Semiconductor ASA integrated circuit.
   * 
   * 5. Any software provided in binary form under this license must not be reverse
   *    engineered, decompiled, modified and/or disassembled.
   * 
   * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
   * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
   * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   * 
   */
  #include "sdk_common.h"
  #if NRF_MODULE_ENABLED(HARDFAULT_HANDLER)
  #include <stdint.h>
  #include "compiler_abstraction.h"
  
  #pragma section = "CSTACK"
  extern void HardFault_c_handler( uint32_t * );
  
  __stackless void HardFault_Handler(void);
  
  __stackless void HardFault_Handler(void)
  {
      __ASM volatile(
      "   ldr.n r3, 103f                          \n"
      "   tst   lr, #4                            \n"
  
      /* PSP is quite simple and does not require additional handler */
      "   itt   ne                                \n"
      "   mrsne r0, psp                           \n"
      /* Jump to the handler, do not store LR - returning from handler just exits exception */
      "   bxne  r3                                \n"
  
      /* Processing MSP requires stack checking */
      "   mrs r0, msp                             \n"
  
      "   ldr.n r1, 101f                          \n"
      "   ldr.n r2, 102f                          \n"
  
      /* MSP is in the range of the stack area */
      "   cmp   r0, r1                            \n"
      "   bhi.n 1f                                \n"
      "   cmp   r0, r2                            \n"
      "   bhi.n 2f                                \n"
  
      "1:                                         \n"
      "   mov   sp, r1                            \n"
      "   mov   r0, #0                            \n"
  
      "2:                                         \n"
      "   bx r3                                   \n"
      /* Data alignment if required */
      "   nop                                     \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)
      );
  }
  #endif //NRF_MODULE_ENABLED(HARDFAULT_HANDLER)
  