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Diffstat (limited to 'c/src/libmisc/stackchk/check.c')
| -rw-r--r-- | c/src/libmisc/stackchk/check.c | 439 |
1 files changed, 0 insertions, 439 deletions
diff --git a/c/src/libmisc/stackchk/check.c b/c/src/libmisc/stackchk/check.c deleted file mode 100644 index 8b923f5c02..0000000000 --- a/c/src/libmisc/stackchk/check.c +++ /dev/null @@ -1,439 +0,0 @@ -/* - * 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. - * - * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. - * On-Line Applications Research Corporation (OAR). - * All rights assigned to U.S. Government, 1994. - * - * This material may be reproduced by or for the U.S. Government pursuant - * to the copyright license under the clause at DFARS 252.227-7013. This - * notice must appear in all copies of this file and its derivatives. - * - * $Id$ - * - */ - -#include <rtems/system.h> -#include <rtems/extension.h> -#include <rtems/fatal.h> -#include <rtems/heap.h> -#include <rtems/stack.h> -#include <rtems/thread.h> -#ifdef XXX_RTEMS_H_FIXED -#include <bsp.h> -#else -#include <rtems/config.h> -extern rtems_configuration_table BSP_Configuration; -#endif - -#include <assert.h> -#include <stdio.h> -#include <string.h> -#include <stdlib.h> - -#include "stackchk.h" -#include "internal.h" - -/* - * This variable contains the name of the task which "blew" the stack. - * It is NULL if the system is all right. - */ - -Thread_Control *Stack_check_Blown_task; - -/* - * The extension table for the stack checker. - */ - -rtems_extensions_table Stack_check_Extension_table = { - Stack_check_Create_extension, /* rtems_task_create */ - 0, /* rtems_task_start */ - 0, /* rtems_task_restart */ - 0, /* rtems_task_delete */ - Stack_check_Switch_extension, /* task_switch */ - Stack_check_Begin_extension, /* task_begin */ - 0, /* task_exitted */ - Stack_check_Fatal_extension, /* fatal */ -}; - -/* - * The "magic pattern" used to mark the end of the stack. - */ - -Stack_check_Control Stack_check_Pattern; - -/* - * Where the pattern goes in the stack area is dependent upon - * whether the stack grow to the high or low area of the memory. - * - */ - -#if ( CPU_STACK_GROWS_UP == TRUE ) - -#define Stack_check_Get_pattern_area( _the_stack ) \ - ((Stack_check_Control *) \ - ((_the_stack)->area + (_the_stack)->size - sizeof( Stack_check_Control ) )) - -#define Stack_check_Calculate_used( _low, _size, _high_water ) \ - ((_high_water) - (_low)) - -#define Stack_check_usable_stack_start(_the_stack) \ - ((_the_stack)->area) - -#else - -#define Stack_check_Get_pattern_area( _the_stack ) \ - ((Stack_check_Control *) ((_the_stack)->area + HEAP_OVERHEAD)) - -#define Stack_check_Calculate_used( _low, _size, _high_water) \ - ( ((_low) + (_size)) - (_high_water) ) - -#define Stack_check_usable_stack_start(_the_stack) \ - ((_the_stack)->area + sizeof(Stack_check_Control)) - -#endif - -#define Stack_check_usable_stack_size(_the_stack) \ - ((_the_stack)->size - sizeof(Stack_check_Control)) - - -/* - * Do we have an interrupt stack? - * XXX it would sure be nice if the interrupt stack were also - * stored in a "stack" structure! - */ - - -Stack_Control stack_check_interrupt_stack; - -/* - * Fill an entire stack area with BYTE_PATTERN. - * This will be used by a Fatal extension to check for - * amount of actual stack used - */ - -void -stack_check_dope_stack(Stack_Control *stack) -{ - memset(stack->area, BYTE_PATTERN, stack->size); -} - - -/*PAGE - * - * Stack_check_Initialize - */ - -unsigned32 stack_check_initialized = 0; - -void Stack_check_Initialize( void ) -{ - rtems_status_code status; - Objects_Id id_ignored; - unsigned32 *p; - - if (stack_check_initialized) - return; - - /* - * Dope the pattern and fill areas - */ - - for ( p = Stack_check_Pattern.pattern; - p < &Stack_check_Pattern.pattern[PATTERN_SIZE_WORDS]; - p += 4 - ) - { - p[0] = 0xFEEDF00D; /* FEED FOOD to BAD DOG */ - p[1] = 0x0BAD0D06; - p[2] = 0xDEADF00D; /* DEAD FOOD GOOD DOG */ - p[3] = 0x600D0D06; - }; - - status = rtems_extension_create( - rtems_build_name( 'S', 'T', 'C', 'K' ), - &Stack_check_Extension_table, - &id_ignored - ); - assert ( status == RTEMS_SUCCESSFUL ); - - Stack_check_Blown_task = 0; - - /* - * If installed by a task, that task will not get setup properly - * since it missed out on the create hook. This will cause a - * failure on first switch out of that task. - * So pretend here that we actually ran create and begin extensions. - */ - - if (_Thread_Executing) - { - Stack_check_Create_extension(_Thread_Executing, _Thread_Executing); - } - - /* - * If appropriate, setup the interrupt stack for high water testing - * also. - */ - if (_CPU_Interrupt_stack_low && _CPU_Interrupt_stack_high) - { - stack_check_interrupt_stack.area = _CPU_Interrupt_stack_low; - stack_check_interrupt_stack.size = _CPU_Interrupt_stack_high - - _CPU_Interrupt_stack_low; - - stack_check_dope_stack(&stack_check_interrupt_stack); - } - - stack_check_initialized = 1; -} - -/*PAGE - * - * Stack_check_Create_extension - */ - -void Stack_check_Create_extension( - Thread_Control *running, - Thread_Control *the_thread -) -{ - if (the_thread && (the_thread != _Thread_Executing)) - stack_check_dope_stack(&the_thread->Start.Initial_stack); -} - -/*PAGE - * - * Stack_check_Begin_extension - */ - -void Stack_check_Begin_extension( - Thread_Control *the_thread -) -{ - Stack_check_Control *the_pattern; - - if ( the_thread->Object.id == 0 ) /* skip system tasks */ - return; - - the_pattern = Stack_check_Get_pattern_area(&the_thread->Start.Initial_stack); - - *the_pattern = Stack_check_Pattern; -} - -/*PAGE - * - * Stack_check_report_blown_task - * Report a blown stack. Needs to be a separate routine - * so that interrupt handlers can use this too. - * - * Caller must have set the Stack_check_Blown_task. - * - * NOTE: The system is in a questionable state... we may not get - * the following message out. - */ - -void Stack_check_report_blown_task(void) -{ - Stack_Control *stack; - Thread_Control *running; - - running = Stack_check_Blown_task; - stack = &running->Start.Initial_stack; - - fprintf( - stderr, - "BLOWN STACK!!! Offending task(%p): id=0x%08x; name=0x%08x", - running, - running->Object.id, - running->name); - fflush(stderr); - - if (BSP_Configuration.User_multiprocessing_table) - fprintf( - stderr, - "; node=%d\n", - BSP_Configuration.User_multiprocessing_table->node - ); - else - fprintf(stderr, "\n"); - fflush(stderr); - - fprintf( - stderr, - " stack covers range 0x%08x - 0x%08x (%d bytes)\n", - (unsigned32) stack->area, - (unsigned32) stack->area + stack->size - 1, - (unsigned32) stack->size); - fflush(stderr); - - fprintf( - stderr, - " Damaged pattern begins at 0x%08x and is %d bytes long\n", - (unsigned32) Stack_check_Get_pattern_area(stack), PATTERN_SIZE_BYTES); - fflush(stderr); - - rtems_fatal_error_occurred( (unsigned32) "STACK BLOWN" ); -} - -/*PAGE - * - * Stack_check_Switch_extension - */ - -void Stack_check_Switch_extension( - Thread_Control *running, - Thread_Control *heir -) -{ - if ( running->Object.id == 0 ) /* skip system tasks */ - return; - - if (0 != memcmp( (void *) Stack_check_Get_pattern_area( &running->Start.Initial_stack)->pattern, - (void *) Stack_check_Pattern.pattern, - PATTERN_SIZE_BYTES)) - { - Stack_check_Blown_task = running; - Stack_check_report_blown_task(); - } -} - -void *Stack_check_find_high_water_mark( - const void *s, - size_t n -) -{ - const unsigned32 *base, *ebase; - unsigned32 length; - - base = s; - length = n/4; - -#if ( CPU_STACK_GROWS_UP == TRUE ) - /* - * start at higher memory and find first word that does not - * match pattern - */ - - base += length - 1; - for (ebase = s; base > ebase; base--) - if (*base != U32_PATTERN) - return (void *) base; -#else - /* - * start at lower memory and find first word that does not - * match pattern - */ - - for (ebase = base + length; base < ebase; base++) - if (*base != U32_PATTERN) - return (void *) base; -#endif - - return (void *)0; -} - -/*PAGE - * - * Stack_check_Dump_threads_usage - * Try to print out how much stack was actually used by the task. - * - */ - -void Stack_check_Dump_threads_usage( - Thread_Control *the_thread -) -{ - unsigned32 size, used; - void *low; - void *high_water_mark; - Stack_Control *stack; - - if ( !the_thread ) - return; - - /* - * XXX HACK to get to interrupt stack - */ - - if (the_thread == (Thread_Control *) -1) - { - if (stack_check_interrupt_stack.area) - { - stack = &stack_check_interrupt_stack; - the_thread = 0; - } - else - return; - } - else - stack = &the_thread->Start.Initial_stack; - - low = Stack_check_usable_stack_start(stack); - size = Stack_check_usable_stack_size(stack); - - high_water_mark = Stack_check_find_high_water_mark(low, size); - - if ( high_water_mark ) - used = Stack_check_Calculate_used( low, size, high_water_mark ); - else - used = 0; - - printf( "0x%08x 0x%08x 0x%08x 0x%08x %8d %8d\n", - the_thread ? the_thread->Object.id : ~0, - the_thread ? the_thread->name : - rtems_build_name('I', 'N', 'T', 'R'), - (unsigned32) stack->area, - (unsigned32) stack->area + (unsigned32) stack->size - 1, - size, - used - ); -} - -/*PAGE - * - * Stack_check_Fatal_extension - */ - -void Stack_check_Fatal_extension( unsigned32 status ) -{ - if (status == 0) - Stack_check_Dump_usage(); -} - - -/*PAGE - * - * Stack_check_Dump_usage - */ - -void Stack_check_Dump_usage( void ) -{ - unsigned32 i; - Thread_Control *the_thread; - unsigned32 hit_running = 0; - - if (stack_check_initialized == 0) - return; - - printf( - " ID NAME LOW HIGH AVAILABLE USED\n" - ); - for ( i=1 ; i<_Thread_Information.maximum ; i++ ) { - the_thread = (Thread_Control *)_Thread_Information.local_table[ i ]; - Stack_check_Dump_threads_usage( the_thread ); - if ( the_thread == _Thread_Executing ) - hit_running = 1; - } - - if ( !hit_running ) - Stack_check_Dump_threads_usage( _Thread_Executing ); - - /* dump interrupt stack info if any */ - Stack_check_Dump_threads_usage((Thread_Control *) -1); -} - |