From 2e33856d6b4f72e8d7349333fde90da010505248 Mon Sep 17 00:00:00 2001
From: Joel Dice <git@seibutsu.mailsnare.net>
Date: Mon, 17 Dec 2007 19:08:17 -0700
Subject: [PATCH] align stack to 16 byte boundary on amd64

---
 src/x86.S | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/x86.S b/src/x86.S
index 625168f125..a1c21ff776 100644
--- a/src/x86.S
+++ b/src/x86.S
@@ -27,6 +27,9 @@ vmNativeCall:
 
    // reserve space for arguments passed via memory
    subq   %rdx,%rsp
+   
+   // align to a 16 byte boundary
+   andq   $0xFFFFFFFFFFFFFFF0,%rsp
 
    // copy memory arguments into place
    movq   $0,%rcx