Add the rt linux 4.1.3-rt3 as base

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

diff --git a/kernel/arch/arm/lib/memcpy.S b/kernel/arch/arm/lib/memcpy.S
new file mode 100644 (file)
index 0000000..7797e81
--- /dev/null
+++ b/kernel/arch/arm/lib/memcpy.S
@@ -0,0 +1,68 @@
+/*
+ *  linux/arch/arm/lib/memcpy.S
+ *
+ *  Author:    Nicolas Pitre
+ *  Created:   Sep 28, 2005
+ *  Copyright: MontaVista Software, Inc.
+ *
+ *  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>
+#include <asm/unwind.h>
+
+#define LDR1W_SHIFT    0
+#define STR1W_SHIFT    0
+
+       .macro ldr1w ptr reg abort
+       W(ldr) \reg, [\ptr], #4
+       .endm
+
+       .macro ldr4w ptr reg1 reg2 reg3 reg4 abort
+       ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4}
+       .endm
+
+       .macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
+       ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8}
+       .endm
+
+       .macro ldr1b ptr reg cond=al abort
+       ldr\cond\()b \reg, [\ptr], #1
+       .endm
+
+       .macro str1w ptr reg abort
+       W(str) \reg, [\ptr], #4
+       .endm
+
+       .macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
+       stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8}
+       .endm
+
+       .macro str1b ptr reg cond=al abort
+       str\cond\()b \reg, [\ptr], #1
+       .endm
+
+       .macro enter reg1 reg2
+       stmdb sp!, {r0, \reg1, \reg2}
+       .endm
+
+       .macro usave reg1 reg2
+       UNWIND( .save   {r0, \reg1, \reg2}      )
+       .endm
+
+       .macro exit reg1 reg2
+       ldmfd sp!, {r0, \reg1, \reg2}
+       .endm
+
+       .text
+
+/* Prototype: void *memcpy(void *dest, const void *src, size_t n); */
+
+ENTRY(memcpy)
+
+#include "copy_template.S"
+
+ENDPROC(memcpy)