From 392e8802486cb573b916e746010e141a75f507e6 Mon Sep 17 00:00:00 2001
From: Kevin
Date: Sat, 15 Nov 2014 09:58:27 +0800
Subject: init android origin source code

---
 ANDROID_3.4.5/arch/sparc/lib/NG2copy_from_user.S | 35 ++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 ANDROID_3.4.5/arch/sparc/lib/NG2copy_from_user.S

(limited to 'ANDROID_3.4.5/arch/sparc/lib/NG2copy_from_user.S')

diff --git a/ANDROID_3.4.5/arch/sparc/lib/NG2copy_from_user.S b/ANDROID_3.4.5/arch/sparc/lib/NG2copy_from_user.S
new file mode 100644
index 00000000..119ccb9a
--- /dev/null
+++ b/ANDROID_3.4.5/arch/sparc/lib/NG2copy_from_user.S
@@ -0,0 +1,35 @@
+/* NG2copy_from_user.S: Niagara-2 optimized copy from userspace.
+ *
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#define EX_LD(x)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, __retl_one_asi;\
+	.text;			\
+	.align 4;
+
+#ifndef ASI_AIUS
+#define ASI_AIUS	0x11
+#endif
+
+#ifndef ASI_BLK_AIUS_4V
+#define ASI_BLK_AIUS_4V	0x17
+#endif
+
+#define FUNC_NAME		NG2copy_from_user
+#define LOAD(type,addr,dest)	type##a [addr] %asi, dest
+#define LOAD_BLK(addr,dest)	ldda [addr] ASI_BLK_AIUS_4V, dest
+#define EX_RETVAL(x)		0
+
+#ifdef __KERNEL__
+#define PREAMBLE					\
+	rd		%asi, %g1;			\
+	cmp		%g1, ASI_AIUS;			\
+	bne,pn		%icc, ___copy_in_user;		\
+	 nop
+#endif
+
+#include "NG2memcpy.S"
-- 
cgit