New function: SB-EXT:SPIN-LOOP-HINT

[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..b7b0aa9 100644 (file)
--- a/src/compiler/x86-64/macros.lisp
+++ b/src/compiler/x86-64/macros.lisp
@@ -41,11 +41,8 @@
   (once-only ((value value))
     `(cond ((and (integerp ,value)
                  (not (typep ,value '(signed-byte 32))))
-            (multiple-value-bind (lo hi) (dwords-for-quad ,value)
-              (inst mov (make-ea-for-object-slot-half
-                         ,ptr ,slot ,lowtag) lo)
-              (inst mov (make-ea-for-object-slot-half
-                         ,ptr (+ ,slot 1/2) ,lowtag) hi)))
+            (inst mov temp-reg-tn ,value)
+            (inst mov (make-ea-for-object-slot ,ptr ,slot ,lowtag) temp-reg-tn))
            (t
             (inst mov (make-ea-for-object-slot ,ptr ,slot ,lowtag) ,value)))))
 
@@ -236,7 +233,7 @@
 ;;;; error code
 (defun emit-error-break (vop kind code values)
   (assemble ()
-    #!-darwin
+    #!-ud2-breakpoints
     (inst int 3)                  ; i386 breakpoint instruction
     ;; On Darwin, we need to use #x0b0f instead of int3 in order
     ;; to generate a SIGILL instead of a SIGTRAP as darwin/x86
@@ -244,7 +241,7 @@
     ;; handlers. Hopefully this will be fixed by Apple at a
     ;; later date. Do the same on x86-64 as we do on x86 until this gets
     ;; sorted out.
-    #!+darwin
+    #!+ud2-breakpoints
     (inst word #x0b0f)
     ;; The return PC points here; note the location for the debugger.
     (when vop
@@ -292,6 +289,14 @@
        (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)