blob: fbe58395a61855a4758a14c401ee37984811ec98 [file] [log] [blame]
/****************************************************************************
**+-----------------------------------------------------------------------+**
**| |**
**| Copyright(c) 1998 - 2008 Texas Instruments. All rights reserved. |**
**| All rights reserved. |**
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**| Redistribution and use in source and binary forms, with or without |**
**| modification, are permitted provided that the following conditions |**
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**| notice, this list of conditions and the following disclaimer. |**
**| * Redistributions in binary form must reproduce the above copyright |**
**| notice, this list of conditions and the following disclaimer in |**
**| the documentation and/or other materials provided with the |**
**| distribution. |**
**| * Neither the name Texas Instruments nor the names of its |**
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**| from this software without specific prior written permission. |**
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**| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |**
**| "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |**
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**+-----------------------------------------------------------------------+**
****************************************************************************/
#include <linux/stddef.h>
unsigned long check_stack(unsigned long *base)
{
register unsigned long sp asm ("sp");
unsigned long retval = sp;
*base = ((sp & ~0x1fff) + 0x380);
return retval;
}
unsigned long check_stack_start(unsigned long *base)
{
unsigned long i;
unsigned long from,to;
to = check_stack(&from);
*base = from;
/* run from the stack pointer down to the base */
for (i = from;i<to;i+=4)
{
/* fill up the pattern */
*(long *)i = 0xdeadbeef;
}
/* printk("check_stack_start: from =%x to=%x data=%x\n",from,to,*(long *)(from+4));*/
return to;
}
unsigned long check_stack_stop(unsigned long *base)
{
unsigned long i;
unsigned long from,to;
to = check_stack(&from);
*base = from;
/* run from the stack pointer down to the base */
for (i = from;i<to;i+=4)
{
/* check up the pattern */
if ((*(long *)i) != 0xdeadbeef)
break;
}
/*printk("check_stack_stop: from =%x to=%x data=%x data=%x i=0x%x\n",from,to,*(long *)from,*(long *)(from+4),i);*/
/* return the first time when the pattern doesn't match */
return i;
}