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0001 /* SPDX-License-Identifier: GPL-2.0 */ 0002 /* Sparc optimized memcmp code. 0003 * 0004 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) 0005 * Copyright (C) 2000, 2008 David S. Miller (davem@davemloft.net) 0006 */ 0007 0008 #include <linux/linkage.h> 0009 #include <asm/asm.h> 0010 #include <asm/export.h> 0011 0012 .text 0013 ENTRY(memcmp) 0014 cmp %o2, 0 0015 1: BRANCH32(be, pn, 2f) 0016 nop 0017 ldub [%o0], %g7 0018 ldub [%o1], %g3 0019 sub %o2, 1, %o2 0020 add %o0, 1, %o0 0021 add %o1, 1, %o1 0022 subcc %g7, %g3, %g3 0023 BRANCH32(be, pt, 1b) 0024 cmp %o2, 0 0025 retl 0026 mov %g3, %o0 0027 2: retl 0028 mov 0, %o0 0029 ENDPROC(memcmp) 0030 EXPORT_SYMBOL(memcmp)
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