1 files changed, 103 insertions, 0 deletions
diff --git a/arch/m68k/lib/memmove.c b/arch/m68k/lib/memmove.c
new file mode 100644
index 000000000000..6519f7f349f6
--- /dev/null
+++ b/arch/m68k/lib/memmove.c
@@ -0,0 +1,103 @@
+/*
+ * 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/string.h>
+void *memmove(void *dest, const void *src, size_t n)
+{
+        void *xdest = dest;
+        size_t temp;
+        if (!n)
+                return xdest;
+        if (dest < src) {
+                if ((long)dest & 1) {
+                        char *cdest = dest;
+                        const char *csrc = src;
+                        *cdest++ = *csrc++;
+                        dest = cdest;
+                        src = csrc;
+                        n--;
+                }
+                if (n > 2 && (long)dest & 2) {
+                        short *sdest = dest;
+                        const short *ssrc = src;
+                        *sdest++ = *ssrc++;
+                        dest = sdest;
+                        src = ssrc;
+                        n -= 2;
+                }
+                temp = n >> 2;
+                if (temp) {
+                        long *ldest = dest;
+                        const long *lsrc = src;
+                        temp--;
+                        do
+                                *ldest++ = *lsrc++;
+                        while (temp--);
+                        dest = ldest;
+                        src = lsrc;
+                }
+                if (n & 2) {
+                        short *sdest = dest;
+                        const short *ssrc = src;
+                        *sdest++ = *ssrc++;
+                        dest = sdest;
+                        src = ssrc;
+                }
+                if (n & 1) {
+                        char *cdest = dest;
+                        const char *csrc = src;
+                        *cdest = *csrc;
+                }
+        } else {
+                dest = (char *)dest + n;
+                src = (const char *)src + n;
+                if ((long)dest & 1) {
+                        char *cdest = dest;
+                        const char *csrc = src;
+                        *--cdest = *--csrc;
+                        dest = cdest;
+                        src = csrc;
+                        n--;
+                }
+                if (n > 2 && (long)dest & 2) {
+                        short *sdest = dest;
+                        const short *ssrc = src;
+                        *--sdest = *--ssrc;
+                        dest = sdest;
+                        src = ssrc;
+                        n -= 2;
+                }
+                temp = n >> 2;
+                if (temp) {
+                        long *ldest = dest;
+                        const long *lsrc = src;
+                        temp--;
+                        do
+                                *--ldest = *--lsrc;
+                        while (temp--);
+                        dest = ldest;
+                        src = lsrc;
+                }
+                if (n & 2) {
+                        short *sdest = dest;
+                        const short *ssrc = src;
+                        *--sdest = *--ssrc;
+                        dest = sdest;
+                        src = ssrc;
+                }
+                if (n & 1) {
+                        char *cdest = dest;
+                        const char *csrc = src;
+                        *--cdest = *--csrc;
+                }
+        }
+        return xdest;
+}
+EXPORT_SYMBOL(memmove);

diff --git a/arch/m68k/lib/memmove.c b/arch/m68k/lib/memmove.c new file mode 100644 index 000000000000..6519f7f349f6 --- /dev/null +++ b/arch/m68k/lib/memmove.c
@@ -0,0 +1,103 @@
	1	/*
	2	* This file is subject to the terms and conditions of the GNU General Public
	3	* License. See the file COPYING in the main directory of this archive
	4	* for more details.
	5	*/
	6
	7	#include <linux/module.h>
	8	#include <linux/string.h>
	9
	10	void memmove(void dest, const void *src, size_t n)
	11	{
	12	void *xdest = dest;
	13	size_t temp;
	14
	15	if (!n)
	16	return xdest;
	17
	18	if (dest < src) {
	19	if ((long)dest & 1) {
	20	char *cdest = dest;
	21	const char *csrc = src;
	22	cdest++ = csrc++;
	23	dest = cdest;
	24	src = csrc;
	25	n--;
	26	}
	27	if (n > 2 && (long)dest & 2) {
	28	short *sdest = dest;
	29	const short *ssrc = src;
	30	sdest++ = ssrc++;
	31	dest = sdest;
	32	src = ssrc;
	33	n -= 2;
	34	}
	35	temp = n >> 2;
	36	if (temp) {
	37	long *ldest = dest;
	38	const long *lsrc = src;
	39	temp--;
	40	do
	41	ldest++ = lsrc++;
	42	while (temp--);
	43	dest = ldest;
	44	src = lsrc;
	45	}
	46	if (n & 2) {
	47	short *sdest = dest;
	48	const short *ssrc = src;
	49	sdest++ = ssrc++;
	50	dest = sdest;
	51	src = ssrc;
	52	}
	53	if (n & 1) {
	54	char *cdest = dest;
	55	const char *csrc = src;
	56	cdest = csrc;
	57	}
	58	} else {
	59	dest = (char *)dest + n;
	60	src = (const char *)src + n;
	61	if ((long)dest & 1) {
	62	char *cdest = dest;
	63	const char *csrc = src;
	64	--cdest = --csrc;
	65	dest = cdest;
	66	src = csrc;
	67	n--;
	68	}
	69	if (n > 2 && (long)dest & 2) {
	70	short *sdest = dest;
	71	const short *ssrc = src;
	72	--sdest = --ssrc;
	73	dest = sdest;
	74	src = ssrc;
	75	n -= 2;
	76	}
	77	temp = n >> 2;
	78	if (temp) {
	79	long *ldest = dest;
	80	const long *lsrc = src;
	81	temp--;
	82	do
	83	--ldest = --lsrc;
	84	while (temp--);
	85	dest = ldest;
	86	src = lsrc;
	87	}
	88	if (n & 2) {
	89	short *sdest = dest;
	90	const short *ssrc = src;
	91	--sdest = --ssrc;
	92	dest = sdest;
	93	src = ssrc;
	94	}
	95	if (n & 1) {
	96	char *cdest = dest;
	97	const char *csrc = src;
	98	--cdest = --csrc;
	99	}
	100	}
	101	return xdest;
	102	}
	103	EXPORT_SYMBOL(memmove);