check.c File Reference

Stack Overflow Check User Extension Set. More...

#include <rtems.h>
#include <inttypes.h>
#include <string.h>
#include <stdlib.h>
#include <rtems/bspIo.h>
#include <rtems/printer.h>
#include <rtems/stackchk.h>
#include <rtems/sysinit.h>
#include <rtems/score/address.h>
#include <rtems/score/percpu.h>
#include <rtems/score/smp.h>
#include <rtems/score/threadimpl.h>

Macros
#define	CPU_STACK_CHECK_PATTERN_INITIALIZER
#define	BYTE_PATTERN   0xA5
#define	U32_PATTERN   0xA5A5A5A5
#define	SANITY_PATTERN_SIZE_BYTES   sizeof(Stack_check_Sanity_pattern)
#define	SANITY_PATTERN_SIZE_WORDS   RTEMS_ARRAY_SIZE(Stack_check_Sanity_pattern)
#define	Stack_check_Get_pattern(_the_stack)
#define	Stack_check_Calculate_used(_low, _size, _high_water)   ((char *)(_high_water) - (char *)(_low))
#define	Stack_check_Usable_stack_start(_the_stack)   ((_the_stack)->area)
#define	Stack_check_Usable_stack_size(_the_stack)   ((_the_stack)->size - SANITY_PATTERN_SIZE_BYTES)

Functions
bool	rtems_stack_checker_create_extension (Thread_Control *running RTEMS_UNUSED, Thread_Control *the_thread)
void	rtems_stack_checker_begin_extension (Thread_Control *executing)
void	rtems_stack_checker_switch_extension (Thread_Control *running, Thread_Control *heir)
	Stack Checker Task Context Switch Extension. More...
bool	rtems_stack_checker_is_blown (void)
	Checks if current task is blown its stack. More...
void	rtems_stack_checker_report_usage_with_plugin (const rtems_printer *printer)
	Print the stack usage report using caller's routine. More...
void	rtems_stack_checker_report_usage (void)
	Print the stack usage report using printk. More...
	RTEMS_SYSINIT_ITEM (Stack_check_Prepare_interrupt_stacks, RTEMS_SYSINIT_ISR_STACK, RTEMS_SYSINIT_ORDER_MIDDLE)

Detailed Description

Stack Overflow Check User Extension Set.

NOTE: This extension set automatically determines at initialization time whether the stack for this CPU grows up or down and installs the correct extension routines for that direction.

Macro Definition Documentation

CPU_STACK_CHECK_PATTERN_INITIALIZER

#define CPU_STACK_CHECK_PATTERN_INITIALIZER

Value:

{ \
    0xFEEDF00D, 0x0BAD0D06, /* FEED FOOD to  BAD DOG */ \
    0xDEADF00D, 0x600D0D06  /* DEAD FOOD but GOOD DOG */ \
  }

Stack_check_Get_pattern

#define Stack_check_Get_pattern

(

_the_stack

)

Value:

((char *)(_the_stack)->area + \
         (_the_stack)->size - SANITY_PATTERN_SIZE_BYTES )