diff options
Diffstat (limited to 'arch/sparc64/lib/memcmp.S')
| -rw-r--r-- | arch/sparc64/lib/memcmp.S | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/sparc64/lib/memcmp.S b/arch/sparc64/lib/memcmp.S new file mode 100644 index 000000000000..c90ad96c51b9 --- /dev/null +++ b/arch/sparc64/lib/memcmp.S @@ -0,0 +1,28 @@ +/* $Id: memcmp.S,v 1.3 2000/03/23 07:51:08 davem Exp $ + * Sparc64 optimized memcmp code. + * + * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + * Copyright (C) 2000 David S. Miller (davem@redhat.com) + */ + + .text + .align 32 + .globl __memcmp, memcmp +__memcmp: +memcmp: + cmp %o2, 0 ! IEU1 Group +loop: be,pn %icc, ret_0 ! CTI + nop ! IEU0 + ldub [%o0], %g7 ! LSU Group + ldub [%o1], %g3 ! LSU Group + sub %o2, 1, %o2 ! IEU0 + add %o0, 1, %o0 ! IEU1 + add %o1, 1, %o1 ! IEU0 Group + subcc %g7, %g3, %g3 ! IEU1 Group + be,pt %icc, loop ! CTI + cmp %o2, 0 ! IEU1 Group + +ret_n0: retl + mov %g3, %o0 +ret_0: retl + mov 0, %o0 |