提交 80160de8 编写于 作者: G Greg Ungerer

m68k: remove duplicate memmove() implementation

Merging the mmu and non-mmu directories we ended up with duplicate
(and identical) implementations of memmove(). Remove one of them.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Acked-by: NGeert Uytterhoeven <geert@linux-m68k.org>
上级 b82ed87e
......@@ -3,12 +3,12 @@
# Makefile for m68k-specific library files..
#
lib-y := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o checksum.o
lib-y := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o memmove.o checksum.o
ifdef CONFIG_MMU
lib-y += string.o uaccess.o
else
lib-y += mulsi3.o divsi3.o udivsi3.o modsi3.o umodsi3.o \
memcpy.o memmove.o memset.o delay.o
memcpy.o memset.o delay.o
endif
......@@ -4,8 +4,6 @@
* for more details.
*/
#define __IN_STRING_C
#include <linux/module.h>
#include <linux/string.h>
......
......@@ -148,98 +148,3 @@ void *memcpy(void *to, const void *from, size_t n)
return xto;
}
EXPORT_SYMBOL(memcpy);
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);
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