(chicken string)
(chicken random)
(chicken condition)
- matchable
- wish)
+ (chicken process context)
+ matchable)
;;; Constants
;;
;;; Instructions
;;
-(define (make-instr opcode modifier A-mode A-num B-mode B-num name)
- (list opcode modifier A-mod A-num B-mode B-num name))
-
-(define (instr-opcode instr) (list-ref instr 0))
-(define (instr-modifier instr) (list-ref instr 1))
-(define (instr-A-mode instr) (list-ref instr 2))
-(define (instr-A-num instr) (list-ref instr 3))
-(define (instr-B-mode instr) (list-ref instr 4))
-(define (instr-B-num instr) (list-ref instr 5))
-(define (instr-name instr) (list-ref instr 6))
+(define (make-instr opcode modifier A-mode A-num B-mode B-num)
+ (lambda args
+ (match args
+ (('opcode) opcode)
+ (('modifier) modifier)
+ (('A-mode) A-mode)
+ (('A-num) A-num)
+ (('B-mode) B-mode)
+ (('B-num) B-num)
+ (('make-copy) (make-instr opcode modifier A-mode A-num B-mode B-num))
+ (('set! 'opcode x) (set! opcode x))
+ (('set! 'modifier x) (set! modifier x))
+ (('set! 'A-mode x) (set! A-mode x))
+ (('set! 'A-num x) (set! A-num x))
+ (('set! 'B-mode x) (set! B-mode x))
+ (('set! 'B-num x) (set! B-num x))
+ (('set-from! other)
+ (set! opcode (other 'opcode))
+ (set! modifier (other 'opcode))
+ (set! A-mode (other 'A-mode))
+ (set! A-num (other 'A-num))
+ (set! B-mode (other 'B-mode))
+ (set! B-num (other 'B-num)))
+ (else
+ (error "Invalid instr arguments" args)))))
(define (mode->string mode)
(case mode
(else
(error "Unknown mode."))))
-(define (instr->string opcode modifier A-mode A-num B-mode B-num name)
+(define (instr->string instr)
(conc opcode
"." modifier
" " (mode->string A-mode) A-num
- " " (mode->string B-mode) B-num
- " ;" name))
-
+ " " (mode->string B-mode) B-num))
+
(define initial-instruction
- (make-instr 'DAT 'F 'immediate 0 'immediate 0 '()))
+ (make-instr 'DAT 'F 'immediate 0 'immediate 0))
;;; Memory setup and addressing
;;
-(define (make-core core-size opcode modifier A-mode A-num B-mode B-num)
- (let ((opcodes (make-vector core-size opcode))
- (modifiers (make-vector core-size modifier))
- (A-modes (make-vector core-size A-mode))
- (A-nums (make-vector core-size A-num))
- (B-modes (make-vector core-size B-mode))
- (B-nums (make-vector core-size B-num))
- (names (make-vector core-size '())))
+(define (make-core core-size initial-instr)
+ (let ((core-vec (make-vector core-size '()))
+ (names-vec (make-vector core-size '())))
+ (let loop ((i 0))
+ (unless (>= i core-size)
+ (vector-set! core-vec i (initial-instr 'copy))
+ (loop (+ i 1))))
(lambda args
(match args
- ((i 'copy-to j n)
- (vector-set! opcodes j (vector-ref opcodes i))
- (vector-set! modifiers j (vector-ref modifiers i))
- (vector-set! A-modes j (vector-ref A-modes i))
- (vector-set! A-nums j (vector-ref A-nums i))
- (vector-set! B-modes j (vector-ref B-modes i))
- (vector-set! B-nums j (vector-ref B-nums i))
- (vector-set! names j n))
- ((i 'copy-from-instr! instr)
- (vector-set! opcodes i (instr-opcode instr))
- (vector-set! modifiers i (instr-modifier instr))
- (vector-set! A-mode i (instr-A-mode instr))
- (vector-set! A-num i (instr-A-num instr))
- (vector-set! B-mode i (instr-B-mode instr))
- (vector-set! B-num i (instr-B-num instr))
- (vector-set! names i (instr-name instr)))
- ((i 'opcode) (vector-ref opcodes i))
- ((i 'modifier) (vector-ref modifiers i))
- ((i 'A-mode) (vector-ref A-modes i))
- ((i 'A-num) (vector-ref A-nums i))
- ((i 'B-mode) (vector-ref B-modes i))
- ((i 'B-num) (vector-ref B-nums i))
+ ((i 'set-from! j n)
+ ((vector-ref core-vec i) 'set-from! (vector-ref core-vec j))
+ (vector-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))
+ ((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 'set-opcode! x n) (vector-set! opcodes i x) (vector-set! names i n))
- ((i 'set-modifier! x n) (vector-set! modifiers i x) (vector-set! names i n))
- ((i 'set-A-mode! x n) (vector-set! A-modes i x) (vector-set! names i n))
- ((i 'set-A-num! x n) (vector-set! A-nums i x) (vector-set! names i n))
- ((i 'set-B-mode! x n) (vector-set! B-modes i x) (vector-set! names i n))
- ((i 'set-B-num! x n) (vector-set! B-nums i x) (vector-set! names i n))
+ ((i v) ((vector-ref core-vec i) v))
(('dump)
(let loop ((i 0))
- (unless (>= i core-size))
- (print* i ":\t")
- (instr->string (vector-ref opcodes i)
- (vector-ref modifiers i)
- (vector-ref A-modes i)
- (vector-ref A-nums i)
- (vector-ref B-modes i)
- (vector-ref B-nums i)
- (vector-ref names i))))))))
+ (unless (>= i core-size)
+ (print* i ":\t")
+ (let ((n (vector-ref names-vec i)))
+ (unless (null? n)
+ (print* "\t;" n)))
+ (print))))))))
(define (addr+ . args)
(foldl (lambda (a b)
(modulo (+ a b core-size) core-size))
0 args))
-;;; Programmes
+;;; Programmes and task queues
;;
(define (make-prog name instrs offset)
(let loop ((ptr addr)
(instrs (prog-instrs prog)))
(unless (null? instrs)
- (core ptr 'copy-from-instr! (car 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))))
(cdr progs-left))
(loop players progs-left))))))
-(define (make-player name ptr)
+(define (make-queue name ptr)
(list name ptr))
-(define (player-name player) (car player))
-(define (player-ptrs player) (cdr player))
+(define (queue-owner queue) (car player))
+(define (queue-ptrs queue) (cdr queue))
-(define (player-set-ptrs! player ptrs)
- (set-cdr! player ptrs))
+(define (queue-set-ptrs! queue ptrs)
+ (set-cdr! queue ptrs))
;;; Executive function
;;
-(define (run players steps-left)
+(define (run core queues steps-left)
(cond
- ((<= steps-left 0) players) ;Tie between remaining players
- ;; ((<= (length players) 1) players) ;There's only one player left who thus wins
+ ((<= steps-left 0) queues) ;Tie between remaining players
+ ;; ((<= (length queues) 1) queues) ;There's only one player left who thus wins
(else
- (let* ((player (car players))
- (other-players (cdr players))
- (ptrs (player-ptrs player))
- (new-ptrs (execute-instr (car ptrs) (player-name player))))
+ (let* ((queue (car queues))
+ (remaining-queues (cdr queues))
+ (ptrs (queue-ptrs queues))
+ (new-ptrs (execute-instr core (car ptrs) (queue-owner queue))))
(if (null? new-ptrs)
(run other-players (- steps-left 1))
(begin
(player-set-ptrs! player (append (cdr ptrs) new-ptrs))
(run (append other-players (list player)) (- steps-left 1))))))))
-(define (execute-instr ptr name)
- (let* ((instr (core-get ptr))
- (A-ptr (eval-operand (instr 'A-mode) (instr 'A-num) ptr))
- (B-ptr (eval-operand (instr 'B-mode) (instr 'B-num) ptr))
- (modifier (instr 'modifier)))
- (case (instr 'opcode)
+(define (execute-instr core ptr name)
+ (let* ((A-ptr (eval-operand core (core ptr 'A-mode) (core ptr 'A-num) ptr name))
+ (B-ptr (eval-operand core (core ptr 'B-mode) (core ptr 'B-num) ptr name))
+ (modifier (core ptr 'modifier)))
+ (case (core ptr 'opcode)
((DAT)
'()) ;Game over, man, game over!
((MOV)
(if (eq? modifier 'I)
- ((core-get B-ptr) 'copy-from! (core-get A-ptr) name)
- (combine A-ptr B-ptr modifier name (lambda (x y) y)))
+ (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)))
((ADD)
- (combine-and-store A-ptr B-ptr modifier name addr+)
+ (combine-and-store core A-ptr B-ptr modifier name addr+)
(list (addr+ ptr 1)))
((SUB)
- (combine-and-store A-ptr B-ptr modifier name
+ (combine-and-store core A-ptr B-ptr modifier name
(lambda (x y) (addr+ x (- y))))
(list (addr+ ptr 1)))
((MUL)
- (combine-and-store A-ptr B-ptr modifier name
+ (combine-and-store core A-ptr B-ptr modifier name
(lambda (x y) (modulo (* (addr+ x core-size)
(addr+ y core-size))
core-size)))
((DIV)
(condition-case
(begin
- (combine-and-store A-ptr B-ptr modifier name
+ (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)))
((MOD)
(condition-case
(begin
- (combine-and-store A-ptr B-ptr modifier name
+ (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)))
((exn arithmetic) '())))
((JMP)
- (list (addr+ ptr ((core-get A-ptr) 'A-num))))
+ (list (addr+ ptr (core A-ptr 'A-num))))
((JMZ)
(list (addr+ ptr (if (instr-zero? B-ptr modifier #f)
((core-get A-ptr) 'A-num)
(and (= 0 (instr 'A-num))
(= 0 (instr 'B-num)))))))
-(define (combine-and-store A-ptr B-ptr modifier name f)
+(define (combine-and-store core A-ptr B-ptr modifier name f)
(case modifier
- ((A) ((core-get B-ptr) 'set-A-num!
- (f ((core-get B-ptr) 'A-num) ((core-get A-ptr) 'A-num)) name))
- ((B) ((core-get B-ptr) 'set-B-num!
- (f ((core-get B-ptr) 'B-num) ((core-get A-ptr) 'B-num)) name))
- ((AB) ((core-get B-ptr) 'set-B-num!
- (f ((core-get B-ptr) 'B-num) ((core-get A-ptr) 'A-num)) name))
- ((BA) ((core-get B-ptr) 'set-A-num!
- (f ((core-get B-ptr) 'A-num) ((core-get A-ptr) 'B-num)) name))
- ((F I) ((core-get B-ptr) 'set-A-num!
- (f ((core-get B-ptr) 'A-num) ((core-get A-ptr) 'A-num))) name
- ((core-get B-ptr) 'set-B-num!
- (f ((core-get B-ptr) 'B-num) ((core-get A-ptr) 'B-num)) name))
- ((X) ((core-get B-ptr) 'set-A-num!
- (f ((core-get B-ptr) 'A-num) ((core-get A-ptr) 'B-num)) name)
- ((core-get B-ptr) 'set-B-num!
- (f ((core-get B-ptr) 'B-num) ((core-get A-ptr) 'A-num)) name))))
-
-(define (eval-operand mode num ptr)
+ ((A) (core B-ptr 'set! 'A-num
+ (f (core B-ptr 'A-num) (core A-ptr 'A-num)) name))
+ ((B) (core B-ptr 'set! 'B-num
+ (f (core B-ptr 'B-num) (core A-ptr 'B-num)) name))
+ ((AB) (core B-ptr 'set! 'B-num
+ (f (core B-ptr 'B-num) (core A-ptr 'A-num)) name))
+ ((BA) (core B-ptr 'set! 'A-num
+ (f (core B-ptr 'A-num) (core A-ptr 'B-num)) name))
+ ((F I) (core B-ptr 'set! 'A-num
+ (f (core B-ptr 'A-num) (core A-ptr 'A-num)) name)
+ (core B-ptr 'set! 'B-num
+ (f (core B-ptr 'B-num) (core A-ptr 'B-num)) name))
+ ((X) (core B-ptr 'set! 'A-num
+ (f (core B-ptr 'A-num) (core A-ptr 'B-num)) name)
+ (core B-ptr 'set! 'B-num
+ (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-get (addr+ ptr num)) 'A-num)))
- ((indirect-B) (addr+ num ((core-get (addr+ ptr num)) 'B-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-instr (core-get (addr+ ptr num))))
- ((aux-instr set-A-num! (addr+ -1 (aux-instr 'A-num))))
- (addr+ num (aux-instr 'A-num))))
+ (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-instr (core-get (addr+ ptr num))))
- (aux-instr set-B-num!(addr+ -1 (aux-instr 'B-num)))
- (addr+ num (aux-instr 'B-num))))
+ (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-instr (core-get (addr+ ptr num)))
- (old-A-num (aux-instr 'A-num)))
- (aux-instr set-A-num! (addr+ 1 (aux-instr 'A-num)))
+ (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-instr (core-get (addr+ ptr num)))
- (old-B-num (aux-instr 'B-num)))
- (aux-instr set-B-num! (addr+ 1 (aux-instr 'B-num)))
+ (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)))))
+;;; Main procedure
+;;
+
;;; TEST CODE
(define addressing-test
The Lambda Lab / projects / jars.git / commitdiff