Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/m68k/lib/memcpy.c b/arch/m68k/lib/memcpy.c
new file mode 100644
index 0000000..73e1818
--- /dev/null
+++ b/arch/m68k/lib/memcpy.c
@@ -0,0 +1,75 @@
+#include <linux/types.h>
+
+void * memcpy(void * to, const void * from, size_t n)
+{
+ void *xto = to;
+ size_t temp, temp1;
+
+ 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;
+
+ __asm__ __volatile__("movel %2,%3\n\t"
+ "andw #7,%3\n\t"
+ "lsrl #3,%2\n\t"
+ "negw %3\n\t"
+ "jmp %%pc@(1f,%3:w:2)\n\t"
+ "4:\t"
+ "movel %0@+,%1@+\n\t"
+ "movel %0@+,%1@+\n\t"
+ "movel %0@+,%1@+\n\t"
+ "movel %0@+,%1@+\n\t"
+ "movel %0@+,%1@+\n\t"
+ "movel %0@+,%1@+\n\t"
+ "movel %0@+,%1@+\n\t"
+ "movel %0@+,%1@+\n\t"
+ "1:\t"
+ "dbra %2,4b\n\t"
+ "clrw %2\n\t"
+ "subql #1,%2\n\t"
+ "jpl 4b\n\t"
+ : "=a" (lfrom), "=a" (lto), "=d" (temp),
+ "=&d" (temp1)
+ : "0" (lfrom), "1" (lto), "2" (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;
+}