align stack to 16 byte boundary on amd64

2025-01-06 05:04:20 +00:00 · 2007-12-17 19:08:17 -07:00 · 2007-12-17 19:08:17 -07:00 · 2e33856d6b
commit 2e33856d6b
parent c483ca40aa
1 changed files with 3 additions and 0 deletions
--- 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