--- /dev/null
+.global memmove
+.type memmove,@function
+memmove:
+ mov 4(%esp),%eax
+ sub 8(%esp),%eax
+ cmp 12(%esp),%eax
+ jae memcpy
+ push %esi
+ push %edi
+ mov 12(%esp),%edi
+ mov 16(%esp),%esi
+ mov 20(%esp),%ecx
+ lea -1(%edi,%ecx),%edi
+ lea -1(%esi,%ecx),%esi
+ std
+ rep movsb
+ cld
+ lea 1(%edi),%eax
+ pop %edi
+ pop %esi
+ ret