From 985d959ea64dbfab142c2cb338c88641e2bcfc96 Mon Sep 17 00:00:00 2001
From: Gabe Black <gblack@eecs.umich.edu>
Date: Sun, 19 Apr 2009 04:56:34 -0700
Subject: [PATCH] X86: Implement a locking version of DEC.

---
 .../arithmetic/increment_and_decrement.py         | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/arch/x86/isa/insts/general_purpose/arithmetic/increment_and_decrement.py b/src/arch/x86/isa/insts/general_purpose/arithmetic/increment_and_decrement.py
index b85dc6328..184b9da72 100644
--- a/src/arch/x86/isa/insts/general_purpose/arithmetic/increment_and_decrement.py
+++ b/src/arch/x86/isa/insts/general_purpose/arithmetic/increment_and_decrement.py
@@ -108,4 +108,19 @@ def macroop DEC_P
     subi t1, t1, 1, flags=(OF, SF, ZF, AF, PF)
     st t1, seg, riprel, disp
 };
+
+def macroop DEC_LOCKED_M
+{
+    ldstl t1, seg, sib, disp
+    subi t1, t1, 1, flags=(OF, SF, ZF, AF, PF)
+    stul t1, seg, sib, disp
+};
+
+def macroop DEC_LOCKED_P
+{
+    rdip t7
+    ldstl t1, seg, riprel, disp
+    subi t1, t1, 1, flags=(OF, SF, ZF, AF, PF)
+    stul t1, seg, riprel, disp
+};
 '''