(chicken string)
(chicken random)
(chicken condition)
- (chicken process context)
+ (chicken process-context)
matchable)
-;;; Constants
-;;
-
-(define core-size 20)
-(define max-steps 10000)
-
;;; Instructions
;;
(('set! 'B-num x) (set! B-num x))
(('set-from! other)
(set! opcode (other 'opcode))
- (set! modifier (other 'opcode))
+ (set! modifier (other 'modifier))
(set! A-mode (other 'A-mode))
(set! A-num (other 'A-num))
(set! B-mode (other 'B-mode))
(set! B-num (other 'B-num)))
+ (('->string)
+ (conc opcode
+ "." modifier
+ " " (mode->string A-mode) A-num
+ " " (mode->string B-mode) B-num))
(else
(error "Invalid instr arguments" args)))))
(else
(error "Unknown mode."))))
-(define (instr->string instr)
- (conc opcode
- "." modifier
- " " (mode->string A-mode) A-num
- " " (mode->string B-mode) B-num))
-
(define initial-instruction
(make-instr 'DAT 'F 'immediate 0 'immediate 0))
(define (make-core core-size initial-instr)
(let ((core-vec (make-vector core-size '()))
(names-vec (make-vector core-size '())))
+ (define (norm-addr i)
+ (if (< i 0)
+ (norm-addr (+ i core-size))
+ (modulo i core-size)))
+ (define (norm-ref v i)
+ (vector-ref v (norm-addr i)))
+ (define (norm-set! v i x)
+ (vector-set! v (norm-addr i)
+ (if (integer? x)
+ (norm-addr x)
+ x)))
(let loop ((i 0))
(unless (>= i core-size)
- (vector-set! core-vec i (initial-instr 'copy))
+ (vector-set! core-vec i (initial-instr 'make-copy))
(loop (+ i 1))))
(lambda args
(match args
((i 'set-from! j n)
- ((vector-ref core-vec i) 'set-from! (vector-ref core-vec j))
- (vector-set! names-vec i n))
+ ((norm-ref core-vec i) 'set-from! (norm-ref core-vec j))
+ (norm-set! names-vec i n))
((i 'set-from-instr! instr n)
- ((vector-ref core-vec i) 'set-from! instr)
- (vector-set! names-vec i n))
+ ((norm-ref core-vec i) 'set-from! instr)
+ (norm-set! names-vec i n))
((i 'set! v x n)
- ((vector-ref core-vec i) 'set! v x)
- (vector-set! names-vec i n))
- ((i 'name) (vector-ref names i))
- ((i v) ((vector-ref core-vec i) v))
+ ((norm-ref core-vec i) 'set! v x)
+ (norm-set! names-vec i n))
+ ((i 'name) (norm-ref names-vec i))
+ (((? integer? i) v) ((norm-ref core-vec i) v))
+ (('->addr (? integer? i)) (norm-addr i))
(('dump)
(let loop ((i 0))
(unless (>= i core-size)
- (print* i ":\t")
+ (print* i ":\t" ((vector-ref core-vec i) '->string))
(let ((n (vector-ref names-vec i)))
(unless (null? n)
(print* "\t;" n)))
- (print))))))))
+ (print)
+ (loop (+ i 1)))))
+ (('size) core-size)))))
-(define (addr+ . args)
- (foldl (lambda (a b)
- (modulo (+ a b core-size) core-size))
- 0 args))
;;; Programmes and task queues
;;
(instrs (prog-instrs prog)))
(unless (null? instrs)
(core ptr 'set-from-instr! (car instrs) (prog-name prog))
- (loop (addr+ ptr 1) (cdr instrs))))
- (make-player (prog-name prog)
- (addr+ addr (prog-offset prog))))
+ (loop (core '->addr (+ ptr 1)) (cdr instrs))))
+ (make-queue (prog-name prog)
+ (core '->addr (+ addr (prog-offset prog)))))
(define (can-install-prog? core prog-len addr)
(let loop ((ptr addr)
(if (= remaining 0)
#t
(if (null? (core ptr 'name))
- (loop (addr+ ptr 1)
+ (loop (core '->addr (+ ptr 1))
(- remaining 1))
#f))))
(define (install-progs core progs)
- (let loop ((players '())
+ (let loop ((queues '())
(progs-left progs))
(if (null? progs-left)
- players
- (let ((addr (pseudo-random-integer core-size))
+ queues
+ (let ((addr (pseudo-random-integer (core 'size)))
(prog (car progs-left)))
(if (can-install-prog? core (length (prog-instrs prog)) addr)
- (loop (cons (install-prog core prog addr) players)
+ (loop (cons (install-prog core prog addr) queues)
(cdr progs-left))
- (loop players progs-left))))))
+ (loop queues progs-left))))))
(define (make-queue name ptr)
(list name ptr))
-(define (queue-owner queue) (car player))
+(define (queue-owner queue) (car queue))
(define (queue-ptrs queue) (cdr queue))
(define (queue-set-ptrs! queue ptrs)
(else
(let* ((queue (car queues))
(remaining-queues (cdr queues))
- (ptrs (queue-ptrs queues))
+ (ptrs (queue-ptrs queue))
(new-ptrs (execute-instr core (car ptrs) (queue-owner queue))))
(if (null? new-ptrs)
- (run other-players (- steps-left 1))
+ (run remaining-queues (- steps-left 1))
(begin
- (player-set-ptrs! player (append (cdr ptrs) new-ptrs))
- (run (append other-players (list player)) (- steps-left 1))))))))
+ (queue-set-ptrs! queue (append (cdr ptrs) new-ptrs))
+ (run core (append remaining-queues (list queue)) (- steps-left 1))))))))
(define (execute-instr core ptr name)
(let* ((A-ptr (eval-operand core (core ptr 'A-mode) (core ptr 'A-num) ptr name))
(if (eq? modifier 'I)
(core B-ptr 'set-from! A-ptr name)
(combine-and-store core A-ptr B-ptr modifier name (lambda (x y) y)))
- (list (addr+ ptr 1)))
+ (list (core '->addr (+ ptr 1))))
((ADD)
- (combine-and-store core A-ptr B-ptr modifier name addr+)
- (list (addr+ ptr 1)))
+ (combine-and-store core A-ptr B-ptr modifier name +)
+ (list (core '->addr (+ ptr 1))))
((SUB)
- (combine-and-store core A-ptr B-ptr modifier name
- (lambda (x y) (addr+ x (- y))))
- (list (addr+ ptr 1)))
+ (combine-and-store core A-ptr B-ptr modifier name -)
+ (list (core '->addr (+ ptr 1))))
((MUL)
- (combine-and-store core A-ptr B-ptr modifier name
- (lambda (x y) (modulo (* (addr+ x core-size)
- (addr+ y core-size))
- core-size)))
- (list (addr+ ptr 1)))
+ (combine-and-store core A-ptr B-ptr modifier name *)
+ (list (core '->addr (+ ptr 1))))
((DIV)
(condition-case
(begin
- (combine-and-store core A-ptr B-ptr modifier name
- (lambda (x y) (quotient (addr x core-size)
- (addr y core-size))))
- (list (addr+ ptr 1)))
+ (combine-and-store core A-ptr B-ptr modifier name quotient)
+
+ (list (core '->addr (+ ptr 1))))
((exn arithmetic) '())))
((MOD)
(condition-case
(begin
- (combine-and-store core A-ptr B-ptr modifier name
- (lambda (x y) (remainder (addr x core-size)
- (addr y core-size))))
- (list (addr+ ptr 1)))
+ (combine-and-store core A-ptr B-ptr modifier name modulo)
+ (list (core '->addr (+ ptr 1))))
((exn arithmetic) '())))
((JMP)
- (list (addr+ ptr (core A-ptr 'A-num))))
+ (list (core '->addr (+ ptr (core A-ptr 'A-num)))))
((JMZ)
- (list (addr+ ptr (if (instr-zero? B-ptr modifier #f)
- ((core-get A-ptr) 'A-num)
- 1))))
+ (list (core '->addr (+ ptr (if (instr-zero? B-ptr modifier #f name)
+ (core A-ptr 'A-num)
+ 1)))))
((JMN)
- (list (addr+ ptr (if (not (instr-zero? B-ptr modifier #f))
- ((core-get A-ptr) 'A-num)
- 1))))
+ (list (core '->addr (+ ptr (if (not (instr-zero? B-ptr modifier #f name))
+ (core A-ptr 'A-num)
+ 1)))))
((DJN)
- (list (addr+ ptr (if (not (instr-zero? B-ptr modifier #t))
- ((core-get A-ptr) 'A-num)
- 1))))
+ (list (core '->addr (+ ptr (if (not (instr-zero? B-ptr modifier #t name))
+ (core A-ptr 'A-num)
+ 1)))))
((SEQ CMP)
- (list (addr+ ptr (if (compare-instrs A-ptr B-ptr modifier =) 2 1))))
+ (list (core '->addr (+ ptr (if (compare-instrs core A-ptr B-ptr modifier =) 2 1)))))
((SNE)
- (list (addr+ ptr (if (compare-instrs A-ptr B-ptr modifier =) 1 2))))
+ (list (core '->addr (+ ptr (if (compare-instrs core A-ptr B-ptr modifier =) 1 2)))))
((SLT)
- (list (addr+ ptr (if (compare-instrs A-ptr B-ptr modifier <) 2 1))))
+ (list (core '->addr (+ ptr (if (compare-instrs core A-ptr B-ptr modifier <) 2 1)))))
((SPL)
- (list (addr+ ptr 1) (addr+ ptr ((core-get A-ptr) 'A-num))))
+ (list (core '->addr (+ ptr 1) (core '->addr (+ ptr (core A-ptr 'A-num))))))
((NOP)
- (list (addr+ ptr 1)))
+ (list (core '->addr (+ ptr 1))))
(else
(error "Unrecognised opcode" (instr 'opcode))))))
-(define (compare-instrs A-ptr B-ptr modifier test)
- (let ((A-instr (core-get A-ptr))
- (B-instr (core-get B-ptr)))
- (case modifier
- ((A) (test (A-instr 'A-num) (B-instr 'A-num)))
- ((B) (test (A-instr 'B-num) (B-instr 'B-num)))
- ((AB) (test (A-instr 'A-num) (B-instr 'B-num)))
- ((BA) (test (A-instr 'B-num) (B-instr 'A-num)))
- ((F) (and
- (test (A-instr 'A-num) (B-instr 'A-num))
- (test (A-instr 'B-num) (B-instr 'B-num))))
- ((X) (and
- (test (A-instr 'A-num) (B-instr 'B-num))
- (test (A-instr 'B-num) (B-instr 'A-num))))
- ((I) (and
- (if (eq? test =)
- (and
- (eq? (A-instr 'opcode) (B-instr 'opcode))
- (eq? (A-instr 'modifier) (B-instr 'modifier))
- (eq? (A-instr 'A-mode) (B-instr 'B-mode))
- (eq? (A-instr 'B-mode) (B-instr 'A-mode)))
- #t)
- (test (A-instr 'A-num) (B-instr 'B-num))
- (test (A-instr 'B-num) (B-instr 'A-num)))))))
-
-(define (instr-zero? ptr modifier decrement)
- (let ((instr (core-get ptr)))
- (case modifier
- ((A AB)
- (if decrement (instr 'set-A-num! (addr+ (instr 'A-num) -1)))
- (= 0 (instr 'A-num)))
- ((A AB)
- (if decrement (instr 'set-B-num! (addr+ (instr 'B-num) -1)))
- (= 0 (instr 'B-num)))
- ((X I F)
- (if decrement
- (begin
- (instr 'set-A-num! (addr+ (instr 'A-num) -1))
- (instr 'set-B-num! (addr+ (instr 'B-num) -1))))
- (and (= 0 (instr 'A-num))
- (= 0 (instr 'B-num)))))))
+(define (compare-instrs core A-ptr B-ptr modifier test)
+ (case modifier
+ ((A) (test (core A-ptr 'A-num) (core B-ptr 'A-num)))
+ ((B) (test (core A-ptr 'B-num) (core B-ptr 'B-num)))
+ ((AB) (test (core A-ptr 'A-num) (core B-ptr 'B-num)))
+ ((BA) (test (core A-ptr 'B-num) (core B-ptr 'A-num)))
+ ((F) (and
+ (test (core A-ptr 'A-num) (core B-ptr 'A-num))
+ (test (core A-ptr 'B-num) (core B-ptr 'B-num))))
+ ((X) (and
+ (test (core A-ptr 'A-num) (core B-ptr 'B-num))
+ (test (core A-ptr 'B-num) (core B-ptr 'A-num))))
+ ((I) (and
+ (if (eq? test =)
+ (and
+ (eq? (core A-ptr 'opcode) (core B-ptr 'opcode))
+ (eq? (core A-ptr 'modifier) (core B-ptr 'modifier))
+ (eq? (core A-ptr 'A-mode) (core B-ptr 'B-mode))
+ (eq? (core A-ptr 'B-mode) (core B-ptr 'A-mode)))
+ #t)
+ (test (core A-ptr 'A-num) (core B-ptr 'B-num))
+ (test (core A-ptr 'B-num) (core B-ptr 'A-num))))))
+
+(define (instr-zero? core ptr modifier decrement name)
+ (case modifier
+ ((A AB)
+ (if decrement (core ptr 'set! 'A-num (- (core ptr 'A-num) 1) name))
+ (= 0 (core ptr 'A-num)))
+ ((A AB)
+ (if decrement (core ptr 'set! 'B-num (- (core ptr 'B-num) 1) name))
+ (= 0 (core ptr 'B-num)))
+ ((X I F)
+ (if decrement
+ (begin
+ (core ptr 'set! 'A-num (- (core ptr 'A-num) 1) name)
+ (core ptr 'set! 'B-num (- (core ptr 'B-num) 1) name)))
+ (and (= 0 (core ptr 'A-num))
+ (= 0 (core ptr 'B-num))))))
(define (combine-and-store core A-ptr B-ptr modifier name f)
(case modifier
(f (core B-ptr 'B-num) (core A-ptr 'A-num)) name))))
(define (eval-operand core mode num ptr name)
- (addr+ ptr
- (case mode
- ((immediate) 0)
- ((direct) num)
- ((indirect-A) (addr+ num (core (addr+ ptr num) 'A-num)))
- ((indirect-B) (addr+ num (core (addr+ ptr num) 'B-num)))
- ((pre-indirect-A)
- (let ((aux-ptr (addr+ ptr num)))
- (core aux-ptr 'set! 'A-num (addr+ -1 (core aux-ptr 'A-num)) name)
- (addr+ num (core aux-ptr 'A-num))))
- ((pre-indirect-B)
- (let ((aux-ptr (addr+ ptr num)))
- (core aux-ptr 'set! 'B-num (addr+ -1 (core aux-ptr 'B-num)) name)
- (addr+ num (core aux-ptr 'B-num))))
- ((post-indirect-A)
- (let* ((aux-ptr (addr+ ptr num))
- (old-A-num (core aux-ptr 'A-num)))
- (core aux-ptr 'set! 'A-num (addr+ 1 (core aux-ptr 'A-num)) name)
- (addr+ num old-A-num)))
- ((post-indirect-B)
- (let* ((aux-ptr (addr+ ptr num))
- (old-B-num (core aux-ptr 'B-num)))
- (core aux-ptr 'set! 'B-num (addr+ 1 (core aux-ptr 'B-num)) name)
- (addr+ num old-B-num)))
- (else
- (error "Unrecognized mode" mode)))))
+ (core '->addr (+ ptr
+ (case mode
+ ((immediate) 0)
+ ((direct) num)
+ ((indirect-A) (+ num (core (+ ptr num) 'A-num)))
+ ((indirect-B) (+ num (core (+ ptr num) 'B-num)))
+ ((pre-indirect-A)
+ (let ((aux-ptr (+ ptr num)))
+ (core aux-ptr 'set! 'A-num (- (core aux-ptr 'A-num) 1) name)
+ (+ num (core aux-ptr 'A-num))))
+ ((pre-indirect-B)
+ (let ((aux-ptr (+ ptr num)))
+ (core aux-ptr 'set! 'B-num (- (core aux-ptr 'B-num) 1) name)
+ (+ num (core aux-ptr 'B-num))))
+ ((post-indirect-A)
+ (let* ((aux-ptr (+ ptr num))
+ (old-A-num (core aux-ptr 'A-num)))
+ (core aux-ptr 'set! 'A-num (+ (core aux-ptr 'A-num) 1) name)
+ (+ num old-A-num)))
+ ((post-indirect-B)
+ (let* ((aux-ptr (+ ptr num))
+ (old-B-num (core aux-ptr 'B-num)))
+ (core aux-ptr 'set! 'B-num (+ (core aux-ptr 'B-num) 1) name)
+ (+ num old-B-num)))
+ (else
+ (error "Unrecognized mode" mode))))))
;;; Main procedure
;;
(define addressing-test
(make-prog 'at (list
- (make-instr 'DAT 'F 'immediate 42 'immediate 53 'at)
- (make-instr 'DAT 'F 'immediate 123 'immediate 256 'at)
- (make-instr 'MOV 'A 'indirect-B 4 'direct 7 'at)
- (make-instr 'NOP 'I 'immediate 0 'immediate 0 'at)
- (make-instr 'NOP 'I 'immediate 0 'immediate 0 'at)
- (make-instr 'NOP 'I 'immediate 0 'immediate 0 'at)
- (make-instr 'DAT 'F 'immediate -5 'immediate -6 'at)) 2))
+ (make-instr 'DAT 'F 'immediate 42 'immediate 53)
+ (make-instr 'DAT 'F 'immediate 123 'immediate 256)
+ (make-instr 'MOV 'A 'indirect-B 4 'direct 7)
+ (make-instr 'NOP 'I 'immediate 0 'immediate 0)
+ (make-instr 'NOP 'I 'immediate 0 'immediate 0)
+ (make-instr 'NOP 'I 'immediate 0 'immediate 0)
+ (make-instr 'DAT 'F 'immediate -5 'immediate -6)) 2))
(define imp
- (make-prog 'imp (list (make-instr 'MOV 'I 'direct 0 'direct 1 'imp)) 0))
+ (make-prog 'imp (list (make-instr 'MOV 'I 'direct 0 'direct 1)) 0))
(define dwarf
(make-prog 'dwarf (list
- (make-instr 'DAT 'F 'immediate 0 'immediate -1 'dwarf)
- (make-instr 'ADD 'AB 'immediate 5 'direct -1 'dwarf)
- (make-instr 'MOV 'I 'direct -2 'indirect-B -2 'dwarf)
- (make-instr 'JMP 'I 'immediate -2 'immediate 0 'dwarf)) 1))
-
-(initialize-core)
-(define players (install-progs (list dwarf imp)))
+ (make-instr 'DAT 'F 'immediate 0 'immediate -1)
+ (make-instr 'ADD 'AB 'immediate 5 'direct -1)
+ (make-instr 'MOV 'I 'direct -2 'indirect-B -2)
+ (make-instr 'JMP 'I 'immediate -2 'immediate 0)) 1))
-(dump-core)
+(define core (make-core 20 (make-instr 'DAT 'F 'immediate 0 'immediate 0)))
+(define queues (install-progs core (list dwarf imp)))