2005-04-17 06:20:36 +08:00
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/*
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* arch/alpha/lib/killstack.S
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* Contributed by Richard Henderson (rth@cygnus.com)
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*
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* Clobber the balance of the kernel stack, hoping to catch
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* uninitialized local variables in the act.
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*/
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2005-09-10 03:28:48 +08:00
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#include <asm/asm-offsets.h>
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2005-04-17 06:20:36 +08:00
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.text
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.set noat
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.align 5
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.globl _mcount
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.ent _mcount
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_mcount:
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.frame $30, 0, $28, 0
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.prologue 0
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ldi $0, 0xdeadbeef
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lda $2, -STACK_SIZE
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sll $0, 32, $1
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and $30, $2, $2
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or $0, $1, $0
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lda $2, TASK_SIZE($2)
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cmpult $2, $30, $1
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beq $1, 2f
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1: stq $0, 0($2)
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addq $2, 8, $2
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cmpult $2, $30, $1
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bne $1, 1b
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2: ret ($28)
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.end _mcount
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