mirror of https://gitee.com/openkylin/linux.git
33 lines
422 B
ArmAsm
33 lines
422 B
ArmAsm
/* Copyright 2002 Andi Kleen */
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#include <asm/cpufeature.h>
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/*
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* memcpy - Copy a memory block.
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*
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* Input:
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* rdi destination
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* rsi source
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* rdx count
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*
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* Output:
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* rax original destination
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*
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* TODO: check best memcpy for PSC
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*/
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.globl __memcpy
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.globl memcpy
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.p2align 4
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__memcpy:
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memcpy:
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movq %rdi,%rax
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movl %edx,%ecx
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shrl $3,%ecx
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andl $7,%edx
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rep
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movsq
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movl %edx,%ecx
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rep
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movsb
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ret
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