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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/sparc/lib/memcmp.S | |
| parent | Initial commit. (diff) | |
| download | linux-upstream.tar.xz linux-upstream.zip | |
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/sparc/lib/memcmp.S')
| -rw-r--r-- | arch/sparc/lib/memcmp.S | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/sparc/lib/memcmp.S b/arch/sparc/lib/memcmp.S new file mode 100644 index 000000000..a18076ef5 --- /dev/null +++ b/arch/sparc/lib/memcmp.S @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Sparc optimized memcmp code. + * + * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + * Copyright (C) 2000, 2008 David S. Miller (davem@davemloft.net) + */ + +#include <linux/linkage.h> +#include <asm/asm.h> +#include <asm/export.h> + + .text +ENTRY(memcmp) + cmp %o2, 0 +1: BRANCH32(be, pn, 2f) + nop + ldub [%o0], %g7 + ldub [%o1], %g3 + sub %o2, 1, %o2 + add %o0, 1, %o0 + add %o1, 1, %o1 + subcc %g7, %g3, %g3 + BRANCH32(be, pt, 1b) + cmp %o2, 0 + retl + mov %g3, %o0 +2: retl + mov 0, %o0 +ENDPROC(memcmp) +EXPORT_SYMBOL(memcmp) |