0.9.1.26:

[sbcl.git] / src / compiler / sparc / macros.lisp

diff --git a/src/compiler/sparc/macros.lisp b/src/compiler/sparc/macros.lisp
index 68bf325..be01f98 100644 (file)
--- a/src/compiler/sparc/macros.lisp
+++ b/src/compiler/sparc/macros.lisp
@@ -21,11 +21,11 @@
        (inst move ,n-dst ,n-src))))
 
 (macrolet
-    ((frob (op inst shift)
+    ((def (op inst shift)
        `(defmacro ,op (object base &optional (offset 0) (lowtag 0))
          `(inst ,',inst ,object ,base (- (ash ,offset ,,shift) ,lowtag)))))
-  (frob loadw ld word-shift)
-  (frob storew st word-shift))
+  (def loadw ld word-shift)
+  (def storew st word-shift))
 
 (defmacro load-symbol (reg symbol)
   `(inst add ,reg null-tn (static-symbol-offset ,symbol)))
@@ -140,6 +140,8 @@
   Result-TN, and Temp-TN is a non-descriptor temp (which may be randomly used
   by the body.)  The body is placed inside the PSEUDO-ATOMIC, and presumably
   initializes the object."
+  (unless body
+    (bug "empty &body in WITH-FIXED-ALLOCATION"))
   (once-only ((result-tn result-tn) (temp-tn temp-tn)
              (type-code type-code) (size size))
     `(pseudo-atomic (:extra (pad-data-block ,size))
@@ -224,3 +226,13 @@
        (inst andcc zero-tn alloc-tn 3)
        ;; The C code needs to process this correctly and fixup alloc-tn.
        (inst t :ne pseudo-atomic-trap)))))
+
+
+(defmacro sb!sys::with-pinned-objects ((&rest objects) &body body)
+  "Arrange with the garbage collector that the pages occupied by
+OBJECTS will not be moved in memory for the duration of BODY.
+Useful for e.g. foreign calls where another thread may trigger
+garbage collection.  This is currently implemented by disabling GC"
+  (declare (ignore objects))           ;should we eval these for side-effect?
+  `(without-gcing
+    ,@body))