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This commit is contained in:
Keisuke Nishida 2001-04-09 04:02:01 +00:00
parent 58995613d9
commit 880ed584e8
1 changed files with 45 additions and 16 deletions
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61
module/system/vm/assemble.scm
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@ -76,16 +76,26 @@
(define (push-code! code)
(set! stack (optimizing-push code stack)))
(define (push-object! x)
(cond (toplevel (dump-object! push-code! x))
((object->code x) => push-code!)
(cond ((object->code x) => push-code!)
(toplevel
;; top-level object-dump
(cond ((object-assoc x object-alist) =>
(lambda (obj+index)
(cond ((not (cdr obj+index))
(set-cdr! obj+index nlocs)
(set! nlocs (+ nlocs 1))))
(push-code! `(local-ref ,(cdr obj+index)))))
(else
(set! object-alist (acons x #f object-alist))
(push-code! `(object-dump ,x)))))
(else
(let ((index (or (if (vlink? x)
(assoc-ref object-alist x)
(assq-ref object-alist x))
(let ((i (length object-alist)))
(set! object-alist (acons x i object-alist))
i))))
(push-code! `(object-ref ,index))))))
;; local object-ref
(let ((i (cond ((object-assoc x object-alist) => cdr)
(else
(let ((i (length object-alist)))
(set! object-alist (acons x i object-alist))
i)))))
(push-code! `(object-ref ,i))))))
(define (label-ref key)
(assq-ref label-alist key))
(define (label-set key)
@ -106,7 +116,7 @@
(($ <glil-argument> op index)
(if (eq? op 'ref)
(push-code! `(local-ref ,index)))
(push-code! `(local-set ,index)))
(push-code! `(local-set ,index)))
(($ <glil-local> op index)
(if (eq? op 'ref)
@ -123,7 +133,7 @@
(push-code! `(external-set ,(+ n index)))))))
(($ <glil-module> op module name)
(push-object! (make-vlink #f name)) ;; FIXME: (make-vmod module)
(push-object! (make-vlink #f name)) ;; FIXME: (make-vmod module)
(if (eq? op 'ref)
(push-code! '(variable-ref))
(push-code! '(variable-set))))
@ -148,14 +158,33 @@
;;
;; main
(for-each generate-code body)
(let ((bytes (stack->bytes stack))
(objs (map car (reverse! object-alist))))
(if toplevel
(make-dumpcode nlocs nexts bytes)
(if toplevel
;; top-level
(let ((new '()))
(define (push-code! x)
(set! new (cons x new)))
(do ((stack (reverse! stack) (cdr stack)))
((null? stack)
(make-dumpcode nlocs nexts (stack->bytes (reverse! new))))
(if (eq? (caar stack) 'object-dump)
(let ((x (cadar stack)))
(dump-object! push-code! x)
(cond ((object-assoc x object-alist) =>
(lambda (obj+index)
(cond ((cdr obj+index) =>
(lambda (n)
(push-code! `(local-set ,n)))))))))
(push-code! (car stack)))))
;; closures
(let ((bytes (stack->bytes (reverse! stack)))
(objs (map car (reverse! object-alist))))
(make-bytespec nargs nrest nlocs nexts bytes objs)))))))
(define (object-assoc x alist)
(if (vlink? x) (assoc x alist) (assq x alist)))
(define (stack->bytes stack)
(let loop ((result '()) (stack (reverse! stack)) (addr 0))
(let loop ((result '()) (stack stack) (addr 0))
(if (null? stack)
(apply string-append (reverse! result))
(let* ((orig (car stack))