"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)))
\f
;;;; 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))
(sc-case stack
((control-stack)
(loadw reg cfp-tn offset))))))
-
(defmacro store-stack-tn (stack reg)
`(let ((stack ,stack)
(reg ,reg))
((control-stack)
(storew reg cfp-tn offset))))))
-
-;;; MAYBE-LOAD-STACK-TN -- Interface
-;;;
(defmacro maybe-load-stack-tn (reg reg-or-stack)
"Move the TN Reg-Or-Stack into Reg if it isn't already there."
(once-only ((n-reg reg)
\f
;;;; Storage allocation:
-
(defmacro with-fixed-allocation ((result-tn flag-tn temp-tn type-code size)
&body body)
"Do stuff to allocate an other-pointer object of fixed Size with a single
\f
;;;; Error Code
-
-(defvar *adjustable-vectors* nil)
-
-(defmacro with-adjustable-vector ((var) &rest body)
- `(let ((,var (or (pop *adjustable-vectors*)
- (make-array 16
- :element-type '(unsigned-byte 8)
- :fill-pointer 0
- :adjustable t))))
- (declare (type (vector (unsigned-byte 8) 16) ,var))
- (setf (fill-pointer ,var) 0)
- (unwind-protect
- (progn
- ,@body)
- (push ,var *adjustable-vectors*))))
-
(eval-when (:compile-toplevel :load-toplevel :execute)
(defun emit-error-break (vop kind code values)
(let ((vector (gensym)))
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
;;;
-;;; 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))
+
+(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))