1 files changed, 50 insertions, 0 deletions
diff --git a/arch/arm/lib/csumpartialcopy.S b/arch/arm/lib/csumpartialcopy.S
new file mode 100644
index 000000000..1ca6aadd6
--- /dev/null
+++ b/arch/arm/lib/csumpartialcopy.S
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ *  linux/arch/arm/lib/csumpartialcopy.S
+ *
+ *  Copyright (C) 1995-1998 Russell King
+ */
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+		.text
+
+/* Function: __u32 csum_partial_copy_nocheck(const char *src, char *dst, int len)
+ * Params  : r0 = src, r1 = dst, r2 = len
+ * Returns : r0 = new checksum
+ */
+
+		.macro	save_regs
+		stmfd	sp!, {r1, r4 - r8, lr}
+		.endm
+
+		.macro	load_regs
+		ldmfd	sp!, {r1, r4 - r8, pc}
+		.endm
+
+		.macro	load1b, reg1
+		ldrb	\reg1, [r0], #1
+		.endm
+
+		.macro	load2b, reg1, reg2
+		ldrb	\reg1, [r0], #1
+		ldrb	\reg2, [r0], #1
+		.endm
+
+		.macro	load1l, reg1
+		ldr	\reg1, [r0], #4
+		.endm
+
+		.macro	load2l, reg1, reg2
+		ldr	\reg1, [r0], #4
+		ldr	\reg2, [r0], #4
+		.endm
+
+		.macro	load4l, reg1, reg2, reg3, reg4
+		ldmia	r0!, {\reg1, \reg2, \reg3, \reg4}
+		.endm
+
+#define FN_ENTRY	ENTRY(csum_partial_copy_nocheck)
+#define FN_EXIT		ENDPROC(csum_partial_copy_nocheck)
+
+#include "csumpartialcopygeneric.S"