/* SPDX-License-Identifier: GPL-2.0 */
/*
 * 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