1.0.33.11: fix detection of tls exhaustion

[sbcl.git] / src / compiler / x86-64 / macros.lisp

diff --git a/src/compiler/x86-64/macros.lisp b/src/compiler/x86-64/macros.lisp
index 018b43c..e591b24 100644 (file)
--- a/src/compiler/x86-64/macros.lisp
+++ b/src/compiler/x86-64/macros.lisp
@@ -292,6 +292,14 @@
        (progn ,@body)
        (pseudo-atomic ,@body)))
 
+;;; Unsafely clear pa flags so that the image can properly lose in a
+;;; pa section.
+#!+sb-thread
+(defmacro %clear-pseudo-atomic ()
+  '(inst mov (make-ea :qword :base thread-base-tn
+              :disp (* 8 thread-pseudo-atomic-bits-slot))
+    0))
+
 #!+sb-thread
 (defmacro pseudo-atomic (&rest forms)
   (with-unique-names (label)