RTEMS | libmisc/stackchk: Add stack smashing protection (!277)

[Mohamed Hassan (@Hamzi)]

Mohamed Hassan commented on a discussion on cpukit/include/rtems/stackchk.h: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/277#note_114123

 > +  #define STACK_CHK_GUARD_VALUE 0xDEADBEEF
 > +#endif
 > +
 > +/**
 > + * @brief Stack smashing protecting function
 > + * 
 > + * @note This function is called when a stack overflow occurs.
 > + *       User application can override the default implementation.
 > + */
 > +void __stack_chk_fail(void);
 > +
 > +#ifndef DISABLE_STACK_CHK_GUARD_RUNTIME_CONFIG
 > +/**
 > + * @brief Stack Canary Pattern Initialization Function
 > + * 
 > + * @return uintptr_t 

Noted.

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/277#note_114123
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