diff options
Diffstat (limited to 'S/byte_copyr.S')
| -rw-r--r-- | S/byte_copyr.S | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/S/byte_copyr.S b/S/byte_copyr.S new file mode 100644 index 0000000..bcc9b21 --- /dev/null +++ b/S/byte_copyr.S @@ -0,0 +1,22 @@ +.text +.globl byte_copyr +.type byte_copyr, @function +byte_copyr: + pushl %edi + pushl %esi + movl 12(%esp), %edi + movl 20(%esp), %esi + movl 16(%esp), %ecx + + decl %edi + decl %esi + addl %ecx, %edi + addl %ecx, %esi + + std + rep movsb + cld + + popl %esi + popl %edi + ret |