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-rw-r--r--arch/sparc/lib/strncmp_64.S33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/sparc/lib/strncmp_64.S b/arch/sparc/lib/strncmp_64.S
new file mode 100644
index 000000000..3d37d65f6
--- /dev/null
+++ b/arch/sparc/lib/strncmp_64.S
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Sparc64 optimized strncmp code.
+ *
+ * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/linkage.h>
+#include <asm/asi.h>
+#include <asm/export.h>
+
+ .text
+ENTRY(strncmp)
+ brlez,pn %o2, 3f
+ lduba [%o0] (ASI_PNF), %o3
+1:
+ add %o0, 1, %o0
+ ldub [%o1], %o4
+ brz,pn %o3, 2f
+ add %o1, 1, %o1
+ cmp %o3, %o4
+ bne,pn %icc, 2f
+ subcc %o2, 1, %o2
+ bne,a,pt %xcc, 1b
+ ldub [%o0], %o3
+2:
+ retl
+ sub %o3, %o4, %o0
+3:
+ retl
+ clr %o0
+ENDPROC(strncmp)
+EXPORT_SYMBOL(strncmp)