X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Flate-extensions.lisp;h=890fd43f8ac40fbc10dd4af08e3b6b61761b8328;hb=e62bb3a4b9633dbd898fca05cc4af3dd0a16e0aa;hp=947d45046c5c2ea457a96200732eb2f2e779c41c;hpb=74f749f68b1163d43ec96d63d00144d2b146deab;p=sbcl.git

diff --git a/src/code/late-extensions.lisp b/src/code/late-extensions.lisp
index 947d450..890fd43 100644
--- a/src/code/late-extensions.lisp
+++ b/src/code/late-extensions.lisp
@@ -177,7 +177,7 @@ EXPERIMENTAL: Interface subject to change."
         (aref
          (when (cddr args)
            (invalid-place))
-         #!+(or x86-64)
+         #!+(or x86 x86-64 ppc)
          (with-unique-names (array)
            `(let ((,array (the (simple-array sb!ext:word (*)) ,(car args))))
               (%array-atomic-incf/word
@@ -189,7 +189,7 @@ EXPERIMENTAL: Interface subject to change."
                                 `(the sb!vm:signed-word ,diff))
                                (atomic-decf
                                 `(- (the sb!vm:signed-word ,diff))))))))
-         #!-(or x86-64)
+         #!-(or x86 x86-64 ppc)
          (with-unique-names (array index old-value)
            (let ((incremented-value
                   (ecase name
@@ -289,13 +289,18 @@ EXPERIMENTAL: Interface subject to change."
   (expand-atomic-frob 'atomic-decf place diff))
 
 ;; Interpreter stubs for ATOMIC-INCF.
-#!+(or x86-64)
+#!+(or x86 x86-64 ppc)
 (defun %array-atomic-incf/word (array index diff)
   (declare (type (simple-array word (*)) array)
            (fixnum index)
            (type sb!vm:signed-word diff))
   (%array-atomic-incf/word array index diff))
 
+(defun spin-loop-hint ()
+  #!+sb-doc
+  "Hints the processor that the current thread is spin-looping."
+  (spin-loop-hint))
+
 (defun call-hooks (kind hooks &key (on-error :error))
   (dolist (hook hooks)
     (handler-case