Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 66 insertions, 0 deletions

diff --git a/arch/arm64/lib/memcpy.S b/arch/arm64/lib/memcpy.S
new file mode 100644
index 000000000..dc8d2a216
--- /dev/null
+++ b/arch/arm64/lib/memcpy.S
@@ -0,0 +1,66 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2013 ARM Ltd.
+ * Copyright (C) 2013 Linaro.
+ *
+ * This code is based on glibc cortex strings work originally authored by Linaro
+ * be found @
+ *
+ * http://bazaar.launchpad.net/~linaro-toolchain-dev/cortex-strings/trunk/
+ * files/head:/src/aarch64/
+ */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+#include <asm/cache.h>
+
+/*
+ * Copy a buffer from src to dest (alignment handled by the hardware)
+ *
+ * Parameters:
+ *	x0 - dest
+ *	x1 - src
+ *	x2 - n
+ * Returns:
+ *	x0 - dest
+ */
+	.macro ldrb1 reg, ptr, val
+	ldrb  \reg, [\ptr], \val
+	.endm
+
+	.macro strb1 reg, ptr, val
+	strb \reg, [\ptr], \val
+	.endm
+
+	.macro ldrh1 reg, ptr, val
+	ldrh  \reg, [\ptr], \val
+	.endm
+
+	.macro strh1 reg, ptr, val
+	strh \reg, [\ptr], \val
+	.endm
+
+	.macro ldr1 reg, ptr, val
+	ldr \reg, [\ptr], \val
+	.endm
+
+	.macro str1 reg, ptr, val
+	str \reg, [\ptr], \val
+	.endm
+
+	.macro ldp1 reg1, reg2, ptr, val
+	ldp \reg1, \reg2, [\ptr], \val
+	.endm
+
+	.macro stp1 reg1, reg2, ptr, val
+	stp \reg1, \reg2, [\ptr], \val
+	.endm
+
+SYM_FUNC_START_ALIAS(__memcpy)
+SYM_FUNC_START_WEAK_PI(memcpy)
+#include "copy_template.S"
+	ret
+SYM_FUNC_END_PI(memcpy)
+EXPORT_SYMBOL(memcpy)
+SYM_FUNC_END_ALIAS(__memcpy)
+EXPORT_SYMBOL(__memcpy)