- (move boxed boxed-arg)
- (inst add boxed (fixnumize (1+ code-trace-table-offset-slot)))
- (inst and boxed (lognot lowtag-mask))
- (move unboxed unboxed-arg)
- (inst shr unboxed word-shift)
- (inst add unboxed lowtag-mask)
- (inst and unboxed (lognot lowtag-mask))
- (pseudo-atomic
- ;; comment from CMU CL code:
- ;; now loading code into static space cause it can't move
- ;;
- ;; KLUDGE: What? What's all the cruft about saving fixups for then?
- ;; I think what's happened is that ALLOCATE-CODE-OBJECT is the basic
- ;; CMU CL primitive; this ALLOCATE-CODE-OBJECT was hacked for
- ;; static space only in a simple-minded port to the X86; and then
- ;; in an attempt to improve the port to the X86,
- ;; ALLOCATE-DYNAMIC-CODE-OBJECT was defined. If that's right, I'd like
- ;; to know why not just go back to the basic CMU CL behavior of
- ;; ALLOCATE-CODE-OBJECT, where it makes a relocatable code object.
- ;; -- WHN 19990916
- ;;
- ;; FIXME: should have a check for overflow of static space
- (load-symbol-value temp *static-space-free-pointer*)
- (inst lea result (make-ea :byte :base temp :disp other-pointer-lowtag))
- (inst add temp boxed)
- (inst add temp unboxed)
- (store-symbol-value temp *static-space-free-pointer*)
- (inst shl boxed (- n-widetag-bits word-shift))
- (inst or boxed code-header-widetag)
- (storew boxed result 0 other-pointer-lowtag)
- (storew unboxed result code-code-size-slot other-pointer-lowtag)
- (inst mov temp nil-value)
- (storew temp result code-entry-points-slot other-pointer-lowtag))
- (storew temp result code-debug-info-slot other-pointer-lowtag)))
+ (let ((size (sc-case words
+ (immediate
+ (logandc2 (+ (fixnumize (tn-value words))
+ (+ (1- (ash 1 n-lowtag-bits))
+ (* vector-data-offset n-word-bytes)))
+ lowtag-mask))
+ (t
+ (inst lea result (make-ea :byte :base words :disp
+ (+ (1- (ash 1 n-lowtag-bits))
+ (* vector-data-offset
+ n-word-bytes))))
+ (inst and result (lognot lowtag-mask))
+ result))))
+ (pseudo-atomic
+ (allocation result size)
+ (inst lea result (make-ea :byte :base result :disp other-pointer-lowtag))
+ (sc-case type
+ (immediate
+ (aver (typep (tn-value type) '(unsigned-byte 8)))
+ (storeb (tn-value type) result 0 other-pointer-lowtag))
+ (t
+ (storew type result 0 other-pointer-lowtag)))
+ (sc-case length
+ (immediate
+ (let ((fixnum-length (fixnumize (tn-value length))))
+ (typecase fixnum-length
+ ((unsigned-byte 8)
+ (storeb fixnum-length result
+ vector-length-slot other-pointer-lowtag))
+ (t
+ (storew fixnum-length result
+ vector-length-slot other-pointer-lowtag)))))
+ (t
+ (storew length result vector-length-slot other-pointer-lowtag)))))))