From: Chad Goodman <cgoodman@HP-EliteBook-2730p.(none)>
Date: Sun, 25 Nov 2012 07:50:04 +0000 (-0800)
Subject: STRING: use glibc version of memcopy
X-Git-Url: https://ziggy471.com/git/gitweb.cgi?p=ziggy471-sgs3-jb.git;a=commitdiff;h=9cddf52e3dbb848c1f0714d0687b587da31e36fb

STRING: use glibc version of memcopy

Signed-off-by: Ziggy <ziggy@tardis.(none)>
---

--- a/lib/string.c
+++ b/lib/string.c
@@ -23,6 +23,7 @@
 #include <linux/string.h>
 #include <linux/ctype.h>
 #include <linux/module.h>
+#include <linux/memcopy.h>
 
 #ifndef __HAVE_ARCH_STRNICMP
 /**
@@ -596,11 +597,11 @@ EXPORT_SYMBOL(memset);
  */
 void *memcpy(void *dest, const void *src, size_t count)
 {
-	char *tmp = dest;
-	const char *s = src;
+	unsigned long dstp = (unsigned long)dest; 
+	unsigned long srcp = (unsigned long)src; 
 
-	while (count--)
-		*tmp++ = *s++;
+	/* Copy from the beginning to the end */ 
+	mem_copy_fwd(dstp, srcp, count); 
 	return dest;
 }
 EXPORT_SYMBOL(memcpy);
@@ -617,21 +618,15 @@ EXPORT_SYMBOL(memcpy);
  */
 void *memmove(void *dest, const void *src, size_t count)
 {
-	char *tmp;
-	const char *s;
+	unsigned long dstp = (unsigned long)dest; 
+	unsigned long srcp = (unsigned long)src; 
 
-	if (dest <= src) {
-		tmp = dest;
-		s = src;
-		while (count--)
-			*tmp++ = *s++;
+	if (dest - src >= count) { 
+		/* Copy from the beginning to the end */ 
+		mem_copy_fwd(dstp, srcp, count); 
 	} else {
-		tmp = dest;
-		tmp += count;
-		s = src;
-		s += count;
-		while (count--)
-			*--tmp = *--s;
+		/* Copy from the end to the beginning */ 
+		mem_copy_bwd(dstp, srcp, count); 
 	}
 	return dest;
 }