CCS/MSP430FR6989: What does mean the exit.c code?

Tool/software: Code Composer Studio

Hi,

I am debugging a code using CCS v.7.1.0 and sometimes during the code execution the debug window shows a code whose name is exit.c.

I am a little apprehensive that it is a problem from my code.

What does exactly it mean?

The exit.c code is bellow.

#include <stdlib.h>
#include <_lock.h>
#include <pprof.h>
#include <stdio.h>

#ifdef __TI_RTS_BUILD
/*---------------------------------------------------------------------------*/
/* __TI_default_exit indicates that the default TI exit routine is being     */
/* used.  The linker makes assumptions about what exit does when this symbol */
/* is seen. This symbols should NOT be defined if a customized exit routine  */
/* is used.                                                                  */
/*---------------------------------------------------------------------------*/
__asm("__TI_default_exit .set 1");
#endif

extern void (*__TI_cleanup_ptr)(void);
extern void (*__TI_dtors_ptr)(int);

typedef void (*PTRFUNC)();
int __TI_enable_exit_profile_output = 1;

/****************************************************************************/
/* EXIT() - NORMAL PROGRAM TERMINATION.                                     */
/****************************************************************************/
void exit(int status)        
{
   /*----------------------------------------------------------------------*/
   /* Output profile info if we have a valid path profile output handler   */
   /*----------------------------------------------------------------------*/
   if (__TI_enable_exit_profile_output &&
       _symval(&__TI_pprof_out_hndl) != (unsigned long)-1)
   {
       PTRFUNC ppfunc = (PTRFUNC)(&__TI_pprof_out_hndl);
       (ppfunc)();
   }
   
   /*-------------------------------------------------------------------*/
   /* MUST LOCK WHEN ACCESSING GLOBALS, like __TI_dtors_ptr,            */
   /* __TI_cleanup_ptr                                                  */
   /*-------------------------------------------------------------------*/  
   _lock(); 

   /*-------------------------------------------------------------------*/
   /* BOTH ATEXIT FUNCTIONS AND STATIC OBJECT DESTRUCTORS ARE           */
   /* REGISTERED IN A LINK LIST POINTED BY __TI_dtors_ptr, NOW WALK     */
   /* THROUGH THIS LIST TO CALL THEM.                                   */
   /*-------------------------------------------------------------------*/
   if (__TI_dtors_ptr)  (*__TI_dtors_ptr)(status);

   /*-------------------------------------------------------------------*/
   /* IF FILES ARE POSSIBLY OPEN, __TI_cleanup_ptr() WILL BE SETUP TO   */
   /* CLOSE THEM.                                                       */
   /*-------------------------------------------------------------------*/
   if (__TI_cleanup_ptr)  (*__TI_cleanup_ptr)();

   _unlock();
   abort();
}

/****************************************************************************/
/* ABORT - ABNORMAL PROGRAM TERMINATION.  CURRENTLY JUST HALTS EXECUTION.   */
/****************************************************************************/
void abort(void)
{
   /*-------------------------------------------------------------------*/
   /* SET C$$EXIT LABEL SO THE DEBUGGER KNOWS WHEN THE C++ PROGRAM HAS  */
   /* COMPLETED.  THIS CAN BE REMOVED IF THE DEBUGGER IS NOT USED.      */
   /*-------------------------------------------------------------------*/
   __asm("        .global C$$EXIT");
   __asm("C$$EXIT: nop");

   for (;;);   /* SPINS FOREVER */
}