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*)
(emit-label ,error)
(cerror-call ,vop ,continue ,error-code ,@values)
,error)))))
-
\f
-;;; PSEUDO-ATOMIC -- Handy macro for making sequences look atomic.
+;;;; PSEUDO-ATOMIC
+
+;;; handy macro for making sequences look atomic
(defmacro pseudo-atomic ((flag-tn &key (extra 0)) &rest forms)
`(progn
(aver (= (tn-offset ,flag-tn) nl4-offset))
(inst addu alloc-tn (1- ,extra))
(inst break 16)
(emit-label label)))))
-
-
\f
-;;;; Memory accessor vop generators
+;;;; memory accessor vop generators
(deftype load/store-index (scale lowtag min-offset
&optional (max-offset min-offset))
,(eval offset))))
(:results (value :scs ,scs))
(:result-types ,el-type)
- (:generator 5
+ (:generator 4
(inst ,(ecase size
(:byte (if signed 'lb 'lbu))
(:short (if signed 'lh 'lhu)))
,el-type)
(:results (result :scs ,scs))
(:result-types ,el-type)
- (:generator 5
+ (:generator 4
(inst ,(ecase size (:byte 'sb) (:short 'sh))
value object
- (- (* ,offset n-word-bytes) (* index ,scale) ,lowtag))
+ (- (+ (* ,offset n-word-bytes) (* index ,scale)) ,lowtag))
(move result value))))))
+
+(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))