X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86%2Fshow.lisp;h=04b63e183d3e6bcc8c131a822d573e570594b7d0;hb=08917ec0d00a781a1089922a5419b7f136cdf08f;hp=c2076b20e285e5fd672de9c44408d6e43ceb2045;hpb=cea4896b2482b7b2b429c1631d774b4cfbc0efba;p=sbcl.git

diff --git a/src/compiler/x86/show.lisp b/src/compiler/x86/show.lisp
index c2076b2..04b63e1 100644
--- a/src/compiler/x86/show.lisp
+++ b/src/compiler/x86/show.lisp
@@ -17,16 +17,31 @@
 (define-vop (print)
   (:args (object :scs (descriptor-reg any-reg)))
   (:temporary (:sc unsigned-reg
-	       :offset eax-offset
-	       :target result
-	       :from :eval
-	       :to (:result 0))
-	      eax)
+               :offset eax-offset
+               :target result
+               :from :eval
+               :to (:result 0))
+              eax)
+  #!+darwin
+  (:temporary (:sc unsigned-reg
+                   :offset esi-offset)
+              prev-stack-pointer)
   (:results (result :scs (descriptor-reg)))
   (:save-p t)
   (:generator 100
+    #!-darwin
     (inst push object)
-    (inst lea eax (make-fixup (extern-alien-name "debug_print") :foreign))
-    (inst call (make-fixup (extern-alien-name "call_into_c") :foreign))
-    (inst add esp-tn word-bytes)
+    #!+darwin
+    (progn
+      ;; the stack should be 16-byte aligned on Darwin
+      (inst mov prev-stack-pointer esp-tn)
+      (inst sub esp-tn n-word-bytes)
+      (align-stack-pointer esp-tn)
+      (storew object esp-tn))
+    (inst lea eax (make-fixup "debug_print" :foreign))
+    (inst call (make-fixup "call_into_c" :foreign))
+    #!-darwin
+    (inst add esp-tn n-word-bytes)
+    #!+darwin
+    (inst mov esp-tn prev-stack-pointer)
     (move result eax)))