diff options
| -rw-r--r-- | memdisk/memcpy.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/memdisk/memcpy.S b/memdisk/memcpy.S new file mode 100644 index 00000000..61c35b9b --- /dev/null +++ b/memdisk/memcpy.S @@ -0,0 +1,29 @@ +# $Id$ +# +# memcpy.S +# +# Simple memcpy() implementation +# + + .text + .globl memcpy + .type memcpy, @function +memcpy: + cld + pushl %edi + pushl %esi + movl 12(%esp),%edi + movl 16(%esp),%esi + movl 20(%esp),%eax + movl %eax,%ecx + shrl $2,%ecx + rep ; movsl + movl %eax,%ecx + andl $3,%ecx + rep ; movsb + movl 12(%esp),%eax + popl %esi + popl %edi + ret + + .size memcpy,.-memcpy |