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Diffstat (limited to 'c/src/tests/libtests/stackchk/blow.c')
-rw-r--r-- | c/src/tests/libtests/stackchk/blow.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/c/src/tests/libtests/stackchk/blow.c b/c/src/tests/libtests/stackchk/blow.c new file mode 100644 index 0000000000..53bcc5b6e5 --- /dev/null +++ b/c/src/tests/libtests/stackchk/blow.c @@ -0,0 +1,49 @@ +/* task1.c + * + * This set of three tasks do some simple task switching for about + * 15 seconds and then call a routine to "blow the stack". + * + * COPYRIGHT (c) 1989-1997. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may in + * the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#include <rtems.h> + +void b() {} + +void blow_stack( void ) +{ + volatile unsigned32 *low, *high; + unsigned char *area; + +b(); + /* + * Destroy the first and last 16 bytes of our stack... Hope it + * does not cause problems :) + */ + + area = (unsigned char *)_Thread_Executing->Start.Initial_stack.area; + + low = (volatile unsigned32 *) (area + HEAP_OVERHEAD); + high = (volatile unsigned32 *) + (area + _Thread_Executing->Start.Initial_stack.size - 16); + + + low[0] = 0x11111111; + low[1] = 0x22222222; + low[2] = 0x33333333; + low[3] = 0x44444444; + + high[0] = 0x55555555; + high[1] = 0x66666666; + high[2] = 0x77777777; + high[3] = 0x88888888; + +} |