memcpy_2_i386.s

   1 .global mymemcpy
   2 .type mymemcpy,@function
   3 mymemcpy:
   4         push %esi
   5         push %edi
   6         mov 12(%esp),%edi
   7         mov 16(%esp),%esi
   8         mov 20(%esp),%ecx
   9         mov %edi,%eax
  10         cmp $4,%ecx
  11         jc 1f
  12         test $3,%edi
  13         jz 1f
  14 2:      movsb
  15         dec %ecx
  16         test $3,%edi
  17         jnz 2b
  18 1:      mov %ecx,%edx
  19         shr $2,%ecx
  20         rep
  21         movsl
  22         and $3,%edx
  23         jz 1f
  24 2:      movsb
  25         dec %edx
  26         jnz 2b
  27 1:      pop %edi
  28         pop %esi
  29         ret