X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86-64%2Fsystem.lisp;h=1edf735b59671384a49035d25354a3a97ae099dd;hb=a7ec2f1af6881c93585d97fb2fdcdfd98006f217;hp=46eedb58bda641e761e89c2ce8cc71370b457e93;hpb=7deecae2d959173eda6a153d490c752c32050a9e;p=sbcl.git

diff --git a/src/compiler/x86-64/system.lisp b/src/compiler/x86-64/system.lisp
index 46eedb5..1edf735 100644
--- a/src/compiler/x86-64/system.lisp
+++ b/src/compiler/x86-64/system.lisp
@@ -361,3 +361,36 @@ number of CPU cycles elapsed as secondary value. EXPERIMENTAL."
     (inst inc (make-ea :qword :base count-vector
                        :disp (- (* (+ vector-data-offset index) n-word-bytes)
                                 other-pointer-lowtag)))))
+
+;;;; 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 mfence)))
+
+#!+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))