X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86-64%2Fc-call.lisp;h=c9d48616a559b65a16c20924df942b636b451d52;hb=ed891a4fd882d1b9fe066ab14bcf2107aea95baa;hp=0589617e5b71dfa4c66d6ed29dd1e599d581ad4f;hpb=d01a6883a21ee073c1a00c401c12185dbd2a8133;p=sbcl.git

diff --git a/src/compiler/x86-64/c-call.lisp b/src/compiler/x86-64/c-call.lisp
index 0589617..c9d4861 100644
--- a/src/compiler/x86-64/c-call.lisp
+++ b/src/compiler/x86-64/c-call.lisp
@@ -210,10 +210,17 @@
                          :sc (sc-or-lose 'dword-reg)
                          :offset (tn-offset val)))))
 
+#-sb-xc-host
 (defun sign-extend (x)
   (declare (type (signed-byte 32) x))
   (sign-extend x))
 
+#+sb-xc-host
+(defun sign-extend (x)
+  (if (logbitp 31 x)
+      (dpb x (byte 32 0) -1)
+      x))
+
 (define-vop (foreign-symbol-sap)
   (:translate foreign-symbol-sap)
   (:policy :fast-safe)
@@ -262,6 +269,7 @@
 (define-vop (alloc-number-stack-space)
   (:info amount)
   (:results (result :scs (sap-reg any-reg)))
+  (:result-types system-area-pointer)
   (:generator 0
     (aver (location= result rsp-tn))
     (unless (zerop amount)
@@ -282,6 +290,7 @@
   (:info amount)
   #!+sb-thread (:temporary (:sc unsigned-reg) temp)
   (:results (result :scs (sap-reg any-reg)))
+  (:result-types system-area-pointer)
   #!+sb-thread
   (:generator 0
     (aver (not (location= result rsp-tn)))
@@ -340,7 +349,7 @@
 ;;; that GC won't move them while foreign functions go to work.
 (define-vop (touch-object)
   (:translate touch-object)
-  (:args (object :scs (descriptor-reg)))
+  (:args (object))
   (:ignore object)
   (:policy :fast-safe)
   (:arg-types t)