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RIOT/core/panic.c 1.97 KB
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  /*
   * Copyright (C) 2015 INRIA
   * Copyright (C) 2015 Eistec AB
   * Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de>
   *
   * This file is subject to the terms and conditions of the GNU Lesser General
   * Public License v2.1. See the file LICENSE in the top level directory for more
   * details.
   */
  
  /**
   * @ingroup     core_util
   * @{
   *
   * @file
   * @brief       Crash handling functions
   *
   * @author      Kévin Roussel <Kevin.Roussel@inria.fr>
   * @author      Oliver Hahm <oliver.hahm@inria.fr>
   * @author      Joakim Nohlgård <joakim.nohlgard@eistec.se>
   * @author      Kaspar Schleiser <kaspar@schleiser.de>
   */
  
  #include <string.h>
  #include <stdio.h>
  
  #include "assert.h"
  #include "kernel_defines.h"
  #include "cpu.h"
  #include "irq.h"
  #include "lpm.h"
  #include "panic.h"
  #include "arch/panic_arch.h"
  #include "reboot.h"
  #include "log.h"
  
  #if defined(DEVELHELP) && defined(MODULE_PS)
  #include "ps.h"
  #endif
  
  const char assert_crash_message[] = "FAILED ASSERTION.";
  
  /* flag preventing "recursive crash printing loop" */
  static int crashed = 0;
  
  /* WARNING: this function NEVER returns! */
  NORETURN void core_panic(core_panic_t crash_code, const char *message)
  {
  #ifdef NDEBUG
      (void) crash_code;
  #endif
  
      if (crashed == 0) {
          /* print panic message to console (if possible) */
          crashed = 1;
  #ifndef NDEBUG
          if (crash_code == PANIC_ASSERT_FAIL) {
              cpu_print_last_instruction();
          }
  #endif
          LOG_ERROR("*** RIOT kernel panic:\n%s\n\n", message);
  #ifdef DEVELHELP
  #ifdef MODULE_PS
          ps();
          LOG_ERROR("\n");
  #endif
  
          LOG_ERROR("*** halted.\n\n");
  #else
          LOG_ERROR("*** rebooting...\n\n");
  #endif
      }
      /* disable watchdog and all possible sources of interrupts */
      irq_disable();
      panic_arch();
  #ifndef DEVELHELP
      /* DEVELHELP not set => reboot system */
      reboot();
  #endif
  
      /* tell the compiler that we won't return from this function
         (even if we actually won't even get here...) */
      UNREACHABLE();
  }