X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86%2Fsystem.lisp;h=2128d2b3bbe9e238a52ecc92b235ee2ba4259c98;hb=ee5629ee974ee8ce7a1cb245a99e94f8943ffd90;hp=9b66ca0a565f9ddf44b2a7cf488feb36cdccb050;hpb=7deecae2d959173eda6a153d490c752c32050a9e;p=sbcl.git

diff --git a/src/compiler/x86/system.lisp b/src/compiler/x86/system.lisp
index 9b66ca0..2128d2b 100644
--- a/src/compiler/x86/system.lisp
+++ b/src/compiler/x86/system.lisp
@@ -352,3 +352,42 @@ number of CPU cycles elapsed as secondary value. EXPERIMENTAL."
   (:info index)
   (:generator 0
     (inst inc (make-ea-for-vector-data count-vector :offset index))))
+
+;;;; Memory barrier support
+
+#!+memory-barrier-vops
+(define-vop (%compiler-barrier)
+  (:policy :fast-safe)
+  (:translate %compiler-barrier)
+  (:generator 3))
+
+#!+memory-barrier-vops
+(define-vop (%memory-barrier)
+  (:policy :fast-safe)
+  (:translate %memory-barrier)
+  (:generator 3
+    (inst add (make-ea :dword :base esp-tn) 0 :lock)))
+
+#!+memory-barrier-vops
+(define-vop (%read-barrier)
+  (:policy :fast-safe)
+  (:translate %read-barrier)
+  (:generator 3))
+
+#!+memory-barrier-vops
+(define-vop (%write-barrier)
+  (:policy :fast-safe)
+  (:translate %write-barrier)
+  (:generator 3))
+
+#!+memory-barrier-vops
+(define-vop (%data-dependency-barrier)
+  (:policy :fast-safe)
+  (:translate %data-dependency-barrier)
+  (:generator 3))
+
+(define-vop (pause)
+  (:translate spin-loop-hint)
+  (:policy :fast-safe)
+  (:generator 0
+    (inst pause)))