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32 lines
621 B
ArmAsm
32 lines
621 B
ArmAsm
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/* memmove.S: Simple memmove implementation.
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*
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* Copyright (C) 1997, 2004 David S. Miller (davem@redhat.com)
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* Copyright (C) 1996, 1997, 1998, 1999 Jakub Jelinek (jj@ultra.linux.cz)
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*/
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.text
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.align 32
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.globl memmove
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.type memmove,#function
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memmove: /* o0=dst o1=src o2=len */
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mov %o0, %g1
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cmp %o0, %o1
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bleu,pt %xcc, memcpy
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add %o1, %o2, %g7
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cmp %g7, %o0
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bleu,pt %xcc, memcpy
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add %o0, %o2, %o5
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sub %g7, 1, %o1
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sub %o5, 1, %o0
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1: ldub [%o1], %g7
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subcc %o2, 1, %o2
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sub %o1, 1, %o1
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stb %g7, [%o0]
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bne,pt %icc, 1b
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sub %o0, 1, %o0
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retl
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mov %g1, %o0
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.size memmove, .-memmove
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