Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / arm / lib / csumpartialcopy.S

diff --git a/kernel/arch/arm/lib/csumpartialcopy.S b/kernel/arch/arm/lib/csumpartialcopy.S
new file mode 100644 (file)
index 0000000..d03fc71
--- /dev/null
+++ b/kernel/arch/arm/lib/csumpartialcopy.S
@@ -0,0 +1,53 @@
+/*
+ *  linux/arch/arm/lib/csumpartialcopy.S
+ *
+ *  Copyright (C) 1995-1998 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+               .text
+
+/* Function: __u32 csum_partial_copy_nocheck(const char *src, char *dst, int len, __u32 sum)
+ * Params  : r0 = src, r1 = dst, r2 = len, r3 = checksum
+ * 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"