kernel-ark/arch/sparc64/lib/memmove.S

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