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kernel/linux-rt-4.4.41/arch/alpha/lib/dbg_stackkill.S 575 Bytes
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  /*
   * arch/alpha/lib/dbg_stackkill.S
   * Contributed by Richard Henderson (rth@cygnus.com)
   *
   * Clobber the balance of the kernel stack, hoping to catch
   * uninitialized local variables in the act.
   */
  
  #include <asm/asm-offsets.h>
  
  	.text
  	.set noat
  
  	.align 5
  	.globl _mcount
  	.ent _mcount
  _mcount:
  	.frame $30, 0, $28, 0
  	.prologue 0
  
  	ldi	$0, 0xdeadbeef
  	lda	$2, -STACK_SIZE
  	sll	$0, 32, $1
  	and	$30, $2, $2
  	or	$0, $1, $0
  	lda	$2, TASK_SIZE($2)
  	cmpult	$2, $30, $1
  	beq	$1, 2f
  1:	stq	$0, 0($2)
  	addq	$2, 8, $2
  	cmpult	$2, $30, $1
  	bne	$1, 1b
  2:	ret	($28)
  
  	.end _mcount