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34 lines
871 B
34 lines
871 B
/*
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* Copyright 2002-2019 Intel Corporation.
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*
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* This software is provided to you as Sample Source Code as defined in the accompanying
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* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
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* section 1.L.
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*
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* This software and the related documents are provided as is, with no express or implied
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* warranties, other than those that are expressly stated in the License.
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*/
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#include "asm_macros.h"
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#define REDZONE_SIZE 0x100
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DECLARE_FUNCTION(CheckRedZone)
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DECLARE_FUNCTION(InsideCheckRedZone)
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.global NAME(CheckRedZone)
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.global NAME(InsideCheckRedZone)
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NAME(CheckRedZone):
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movq $REDZONE_SIZE/8, %rcx
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mov $0xdeadbeeffeedface, %rax
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lea -REDZONE_SIZE(%rsp), %rdi
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rep stosq
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NAME(InsideCheckRedZone):
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movq $REDZONE_SIZE/8, %rcx
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mov $0xdeadbeeffeedface, %rax
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lea -REDZONE_SIZE(%rsp), %rdi
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repz scasq
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mov %rcx, %rax
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ret
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