[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/m68k/lib/uaccess.c b/src/kernel/linux/v4.14/arch/m68k/lib/uaccess.c
new file mode 100644
index 0000000..7646e46
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/m68k/lib/uaccess.c
@@ -0,0 +1,142 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/uaccess.h>
+
+unsigned long __generic_copy_from_user(void *to, const void __user *from,
+ unsigned long n)
+{
+ unsigned long tmp, res;
+
+ asm volatile ("\n"
+ " tst.l %0\n"
+ " jeq 2f\n"
+ "1: "MOVES".l (%1)+,%3\n"
+ " move.l %3,(%2)+\n"
+ " subq.l #1,%0\n"
+ " jne 1b\n"
+ "2: btst #1,%5\n"
+ " jeq 4f\n"
+ "3: "MOVES".w (%1)+,%3\n"
+ " move.w %3,(%2)+\n"
+ "4: btst #0,%5\n"
+ " jeq 6f\n"
+ "5: "MOVES".b (%1)+,%3\n"
+ " move.b %3,(%2)+\n"
+ "6:\n"
+ " .section .fixup,\"ax\"\n"
+ " .even\n"
+ "10: lsl.l #2,%0\n"
+ " btst #1,%5\n"
+ " jeq 8f\n"
+ "30: addq.l #2,%0\n"
+ "8: btst #0,%5\n"
+ " jeq 6b\n"
+ "50: addq.l #1,%0\n"
+ " jra 6b\n"
+ " .previous\n"
+ "\n"
+ " .section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .long 1b,10b\n"
+ " .long 3b,30b\n"
+ " .long 5b,50b\n"
+ " .previous"
+ : "=d" (res), "+a" (from), "+a" (to), "=&d" (tmp)
+ : "0" (n / 4), "d" (n & 3));
+
+ return res;
+}
+EXPORT_SYMBOL(__generic_copy_from_user);
+
+unsigned long __generic_copy_to_user(void __user *to, const void *from,
+ unsigned long n)
+{
+ unsigned long tmp, res;
+
+ asm volatile ("\n"
+ " tst.l %0\n"
+ " jeq 4f\n"
+ "1: move.l (%1)+,%3\n"
+ "2: "MOVES".l %3,(%2)+\n"
+ "3: subq.l #1,%0\n"
+ " jne 1b\n"
+ "4: btst #1,%5\n"
+ " jeq 6f\n"
+ " move.w (%1)+,%3\n"
+ "5: "MOVES".w %3,(%2)+\n"
+ "6: btst #0,%5\n"
+ " jeq 8f\n"
+ " move.b (%1)+,%3\n"
+ "7: "MOVES".b %3,(%2)+\n"
+ "8:\n"
+ " .section .fixup,\"ax\"\n"
+ " .even\n"
+ "20: lsl.l #2,%0\n"
+ "50: add.l %5,%0\n"
+ " jra 8b\n"
+ " .previous\n"
+ "\n"
+ " .section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .long 2b,20b\n"
+ " .long 3b,20b\n"
+ " .long 5b,50b\n"
+ " .long 6b,50b\n"
+ " .long 7b,50b\n"
+ " .long 8b,50b\n"
+ " .previous"
+ : "=d" (res), "+a" (from), "+a" (to), "=&d" (tmp)
+ : "0" (n / 4), "d" (n & 3));
+
+ return res;
+}
+EXPORT_SYMBOL(__generic_copy_to_user);
+
+/*
+ * Zero Userspace
+ */
+
+unsigned long __clear_user(void __user *to, unsigned long n)
+{
+ unsigned long res;
+
+ asm volatile ("\n"
+ " tst.l %0\n"
+ " jeq 3f\n"
+ "1: "MOVES".l %2,(%1)+\n"
+ "2: subq.l #1,%0\n"
+ " jne 1b\n"
+ "3: btst #1,%4\n"
+ " jeq 5f\n"
+ "4: "MOVES".w %2,(%1)+\n"
+ "5: btst #0,%4\n"
+ " jeq 7f\n"
+ "6: "MOVES".b %2,(%1)\n"
+ "7:\n"
+ " .section .fixup,\"ax\"\n"
+ " .even\n"
+ "10: lsl.l #2,%0\n"
+ "40: add.l %4,%0\n"
+ " jra 7b\n"
+ " .previous\n"
+ "\n"
+ " .section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .long 1b,10b\n"
+ " .long 2b,10b\n"
+ " .long 4b,40b\n"
+ " .long 5b,40b\n"
+ " .long 6b,40b\n"
+ " .long 7b,40b\n"
+ " .previous"
+ : "=d" (res), "+a" (to)
+ : "d" (0), "0" (n / 4), "d" (n & 3));
+
+ return res;
+}
+EXPORT_SYMBOL(__clear_user);