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       memmove.s - scc - simple c99 compiler
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       ---
       memmove.s (275B)
       ---
            1         .file         "memmove.s"
            2 
            3         .text
            4         .globl        memmove,_memmove
            5 _memmove:
            6 memmove:
            7         movq        %rdi,%rax
            8 
            9         movq        %rdx,%rcx
           10 
           11         cmpq        %rdi,%rsi
           12         jg        forward
           13         jl        backward
           14         ret
           15 
           16 forward:
           17         cld
           18         rep
           19         movsb
           20         ret
           21 
           22 backward:
           23         std
           24         movq        %rdx,%r8
           25         subq        $1,%r8
           26         addq        %r8,%rdi
           27         addq        %r8,%rsi
           28         rep;        movsb
           29         ret