=> 0x3981410 <vfprintf+13024>:	repnz scas %es:(%edi),%al
   0x3981412 <vfprintf+13026>:	not    %ecx
   0x3981414 <vfprintf+13028>:	lea    -0x1(%ecx),%edi
   0x3981417 <vfprintf+13031>:	jmp    0x3981178 <vfprintf+12360>
   0x398141c <vfprintf+13036>:	mov    -0x508(%ebp),%esp
   0x3981422 <vfprintf+13042>:	jmp    0x397e69a <vfprintf+1386>
   0x3981427 <vfprintf+13047>:	jmp    0x397e7cf <vfprintf+1695>
   0x398142c <vfprintf+13052>:	mov    -0x4a8(%ebp),%edi
   0x3981432 <vfprintf+13058>:	xor    %eax,%eax
   0x3981434 <vfprintf+13060>:	mov    $0x2,%ecx
   0x3981439 <vfprintf+13065>:	cmpl   $0x0,-0x4cc(%ebp)
   0x3981440 <vfprintf+13072>:	mov    %edi,-0x20(%ebp)
   0x3981443 <vfprintf+13075>:	lea    -0x44(%ebp),%edi
   0x3981446 <vfprintf+13078>:	mov    %edi,-0x480(%ebp)
   0x398144c <vfprintf+13084>:	rep stos %eax,%es:(%edi)
   0x398144e <vfprintf+13086>:	js     0x398253b <vfprintf+17419>