X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fppc%2Fmacros.lisp;h=a4da8d3a0b9ec53bc4701e67ee854f1b269fb2f2;hb=1d46d379bb7a6424524b978f213ef69be5f1ad69;hp=03748faaf8f8713de691fc6afef345823790661e;hpb=27a028cff1559dec1cb1faaee01659ade816c908;p=sbcl.git

diff --git a/src/compiler/ppc/macros.lisp b/src/compiler/ppc/macros.lisp
index 03748fa..a4da8d3 100644
--- a/src/compiler/ppc/macros.lisp
+++ b/src/compiler/ppc/macros.lisp
@@ -76,8 +76,8 @@
   "Jump to the lisp function FUNCTION.  LIP is an interior-reg temporary."
   `(progn
     ;; something is deeply bogus.  look at this
-    ;; (loadw ,lip ,function sb!vm:function-code-offset sb!vm:function-pointer-type)
-    (inst addi ,lip ,function (- (* n-word-bytes sb!vm:simple-fun-code-offset) sb!vm:fun-pointer-lowtag))
+    ;; (loadw ,lip ,function function-code-offset function-pointer-type)
+    (inst addi ,lip ,function (- (* n-word-bytes simple-fun-code-offset) fun-pointer-lowtag))
     (inst mtctr ,lip)
     (move code-tn ,function)
     (inst bctr)))
@@ -102,9 +102,7 @@
 
 ;;;; Stack TN's
 
-;;; Load-Stack-TN, Store-Stack-TN  --  Interface
-;;;
-;;;    Move a stack TN to a register and vice-versa.
+;;; Move a stack TN to a register and vice-versa.
 (defmacro load-stack-tn (reg stack)
   `(let ((reg ,reg)
 	 (stack ,stack))
@@ -112,7 +110,6 @@
        (sc-case stack
 	 ((control-stack)
 	  (loadw reg cfp-tn offset))))))
-
 (defmacro store-stack-tn (stack reg)
   `(let ((stack ,stack)
 	 (reg ,reg))
@@ -200,8 +197,7 @@
   Emit code for a continuable error with the specified Error-Code and
   context Values.  If the error is continued, execution resumes after
   the GENERATE-CERROR-CODE form."
-  (let ((continue (gensym "CONTINUE-LABEL-"))
-	(error (gensym "ERROR-LABEL-")))
+  (with-unique-names (continue error)
     `(let ((,continue (gen-label)))
        (emit-label ,continue)
        (assemble (*elsewhere*)
@@ -209,18 +205,17 @@
 	   (emit-label ,error)
 	   (cerror-call ,vop ,continue ,error-code ,@values)
 	   ,error)))))
-
-
 
-;;; PSEUDO-ATOMIC -- Handy macro for making sequences look atomic.
+;;;; PSEUDO-ATOMIC
+
+;;; handy macro for making sequences look atomic
 ;;;
-;;; flag-tn must be wired to NL3. If a deferred interrupt happens
-;;; while we have the low bits of alloc-tn set, we add a "large"
-;;; constant to flag-tn.  On exit, we add flag-tn to alloc-tn
-;;; which (a) aligns alloc-tn again and (b) makes alloc-tn go
-;;; negative.  We then trap if alloc-tn's negative (handling the
-;;; deferred interrupt) and using flag-tn - minus the large constant -
-;;; to correct alloc-tn.
+;;; FLAG-TN must be wired to NL3. If a deferred interrupt happens
+;;; while we have the low bits of ALLOC-TN set, we add a "large"
+;;; constant to FLAG-TN. On exit, we add FLAG-TN to ALLOC-TN which (a)
+;;; aligns ALLOC-TN again and (b) makes ALLOC-TN go negative. We then
+;;; trap if ALLOC-TN's negative (handling the deferred interrupt) and
+;;; using FLAG-TN - minus the large constant - to correct ALLOC-TN.
 (defmacro pseudo-atomic ((flag-tn &key (extra 0)) &rest forms)
   (let ((n-extra (gensym)))
     `(let ((,n-extra ,extra))
@@ -243,3 +238,12 @@
 
 
 
+
+(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))