From 3dff0e446a214c6a56cd1dcc7eda569ff8050dee Mon Sep 17 00:00:00 2001
From: Jonghyun Park <parjong@gmail.com>
Date: Thu, 6 Apr 2017 09:47:12 +0900
Subject: [PATCH] [x86/Linux] 16-byte aligned ResolveWorkerChainLookupAsmStub

---
 src/vm/i386/asmhelpers.S | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/vm/i386/asmhelpers.S b/src/vm/i386/asmhelpers.S
index 0ab23f1572e5..60f2ab63c86a 100644
--- a/src/vm/i386/asmhelpers.S
+++ b/src/vm/i386/asmhelpers.S
@@ -1117,11 +1117,19 @@ LOCAL_LABEL(main_loop):
     // be quick to reset the counter so we don't get a bunch of contending threads
     mov     dword ptr [edx], CALL_STUB_CACHE_INITIAL_SUCCESS_COUNT
 
+    #define STACK_ALIGN_PADDING 12
+    sub     esp, STACK_ALIGN_PADDING
+
     // promote the entry to the beginning of the chain
     mov     ecx, eax
+
+    CHECK_STACK_ALIGNMENT
     // call C_FUNC(VirtualCallStubManager::PromoteChainEntry)
     call    C_FUNC(_ZN22VirtualCallStubManager17PromoteChainEntryEP16ResolveCacheElem)
 
+    add     esp, STACK_ALIGN_PADDING
+    #undef  STACK_ALIGN_PADDING
+
 LOCAL_LABEL(nopromote):
 
     pop     ecx