patch-1.3.94 linux/arch/m68k/lib/memcpy.c

• Lines: 56
• Date: Wed Dec 27 22:46:35 1995
• Orig file: v1.3.93/linux/arch/m68k/lib/memcpy.c
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.93/linux/arch/m68k/lib/memcpy.c linux/arch/m68k/lib/memcpy.c
@@ -0,0 +1,55 @@
+#include <linux/types.h>
+
+void * memcpy(void * to, const void * from, size_t n)
+{
+  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;
+      temp--;
+      do
+	*lto++ = *lfrom++;
+      while (temp--);
+      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;
+}