From d2554ff0304af0d4b365894026b702b5714385d6 Mon Sep 17 00:00:00 2001
From: Gabe Black <gblack@eecs.umich.edu>
Date: Sun, 19 Apr 2009 04:55:43 -0700
Subject: [PATCH] X86: Implement the ldstl microop. This microop does a load,
 checks that a store would succeed, and locks the requested address.

---
 src/arch/x86/isa/microops/ldstop.isa | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/arch/x86/isa/microops/ldstop.isa b/src/arch/x86/isa/microops/ldstop.isa
index 24ddd0b43..5df423ea9 100644
--- a/src/arch/x86/isa/microops/ldstop.isa
+++ b/src/arch/x86/isa/microops/ldstop.isa
@@ -440,6 +440,8 @@ let {{
     defineMicroLoadOp('Ld', 'Data = merge(Data, Mem, dataSize);')
     defineMicroLoadOp('Ldst', 'Data = merge(Data, Mem, dataSize);',
             'X86ISA::StoreCheck')
+    defineMicroLoadOp('Ldstl', 'Data = merge(Data, Mem, dataSize);',
+            'X86ISA::StoreCheck | Request::LOCKED')
     defineMicroLoadOp('Ldfp', 'FpData.uqw = Mem;')
 
     def defineMicroStoreOp(mnemonic, code, \