x64 and anti-debugging

Hi,
rep stos/movs trick works fine on my tests:
- Windows Xp x64
- Windows 7 x64

Attached flash movie IDA live test...

---
File: x64 Anti-single step.htm
MD5: 91aad204fe61b3a46afb46eed4d1fda2
SHA1: 3c48deb7d8d6e21f8c6e63882615128d4b854baf
CRC32: 95d4569f
---
File: x64 Anti-single step.swf
MD5: a9287a4f42a467f23290e7d284891132
SHA1: e9c2c931de3de7df9c2c735bc574d13cbca3292a
CRC32: f97ee390
---
File: x64 Anti-single step.exe
MD5: a2702aaf3844eaf3903cb563deaeda05
SHA1: 26bd720ec215754a8a140593cd3924d504ff173a
CRC32: fd8fa22d
---
File: x64 Anti-single step.i64
MD5: 667ce8eab62117c15f6f3679b9d63b0b
SHA1: b7ce9f357930d7ca7bb4a74d9bd9c59b7a6aba22
CRC32: 8306cb3a
---