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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-25 17:47:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-25 17:47:58 -0700
commitffbf0ab1a648b867ce953cc43557090f679bb9c1 (patch)
treedf90a9fe3b46b636d977e9aa993efe5588436d1c /arch/m68k/lib/memcpy.c
parent73939bb56acef1c9e776a10f0aeea0456d6815f6 (diff)
parent66d857b08b8c3ed5c72c361f863cce77d2a978d7 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k: merge m68k and m68knommu arch directories
Diffstat (limited to 'arch/m68k/lib/memcpy.c')
-rw-r--r--arch/m68k/lib/memcpy.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/m68k/lib/memcpy.c b/arch/m68k/lib/memcpy.c
new file mode 100644
index 00000000000..b50dbcad474
--- /dev/null
+++ b/arch/m68k/lib/memcpy.c
@@ -0,0 +1,62 @@
+
+#include <linux/types.h>
+
+void * memcpy(void * to, const void * from, size_t n)
+{
+#ifdef CONFIG_COLDFIRE
+ void *xto = to;
+ size_t temp;
+
+ if (!n)
+ return xto;
+ if ((long) to & 1)
+ {
+ char *cto = to;
+ const char *cfrom = from;
+ *cto++ = *cfrom++;
+ to = cto;
+ from = cfrom;
+ n--;
+ }
+ if (n > 2 && (long) to & 2)
+ {
+ short *sto = to;
+ const short *sfrom = from;
+ *sto++ = *sfrom++;
+ to = sto;
+ from = sfrom;
+ n -= 2;
+ }
+ temp = n >> 2;
+ if (temp)
+ {
+ long *lto = to;
+ const long *lfrom = from;
+ for (; temp; temp--)
+ *lto++ = *lfrom++;
+ to = lto;
+ from = lfrom;
+ }
+ if (n & 2)
+ {
+ short *sto = to;
+ const short *sfrom = from;
+ *sto++ = *sfrom++;
+ to = sto;
+ from = sfrom;
+ }
+ if (n & 1)
+ {
+ char *cto = to;
+ const char *cfrom = from;
+ *cto = *cfrom;
+ }
+ return xto;
+#else
+ const char *c_from = from;
+ char *c_to = to;
+ while (n-- > 0)
+ *c_to++ = *c_from++;
+ return((void *) to);
+#endif
+}