Messing with how core is implemented.

diff --git a/mars.scm b/mars.scm
index 66ec046..f2c78c0 100644 (file)
--- a/mars.scm
+++ b/mars.scm
@@ -6,7 +6,8 @@
         (chicken string)
         (chicken random)
         (chicken condition)
-        matchable)
+        matchable
+        wish)
 
 ;;; Constants
 ;;
@@ -18,47 +19,37 @@
 ;;; Instructions
 ;;
 
-(define ((make-instr opcode modifier A-mode A-num B-mode B-num name) . args)
-  (match args
-    (('copy n) (make-instr opcode modifier A-mode A-num B-mode B-num n))
-    (('copy-from! other n)
-     (set! opcode (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))
-     (set! name n))
-    (('opcode) opcode)
-    (('modifier) modifier)
-    (('A-mode) A-mode)
-    (('A-num) A-num)
-    (('B-mode) B-mode)
-    (('B-num) B-num)
-    (('name) name)
-    (('print) (print opcode
-                     "." modifier
-                     " " (mode-string A-mode) A-num
-                     ", " (mode-string B-mode) B-num
-                     (if (null? name) "" (conc " ; " name))))
-    (('set-opcode! x n) (set! opcode x) (set! name n))
-    (('set-modifier! x n) (set! modifier x) (set! name n))
-    (('set-A-mode! x n) (set! A-mode x) (set! name n))
-    (('set-A-num! x n) (set! A-num x) (set! name n))
-    (('set-B-mode! x n) (set! B-mode x) (set! name n))
-    (('set-B-num! x n) (set! B-num x) (set! name n))))
-
-(define (mode-string mode)
-   (case mode
-     ((immediate) "#")
-     ((direct) "$")
-     ((indirect-A) "*")
-     ((indirect-B) "@")
-     ((pre-indirect-A) "{")
-     ((pre-indirect-B) "<")
-     ((post-indirect-A) "}")
-     ((post-indirect-B) ">")))
-
+(define (make-instr opcode modifier A-mode A-num B-mode B-num name)
+  (list opcode modifier A-mod A-num B-mode B-num name))
+
+(define (instr-opcode instr) (list-ref instr 0))
+(define (instr-modifier instr) (list-ref instr 1))
+(define (instr-A-mode instr) (list-ref instr 2))
+(define (instr-A-num instr) (list-ref instr 3))
+(define (instr-B-mode instr) (list-ref instr 4))
+(define (instr-B-num instr) (list-ref instr 5))
+(define (instr-name instr) (list-ref instr 6))
+
+(define (mode->string mode)
+  (case mode
+    ((immediate) "#")
+    ((direct) "$")
+    ((indirect-A) "*")
+    ((indirect-B) "@")
+    ((pre-indirect-A) "{")
+    ((pre-indirect-B) "<")
+    ((post-indirect-A) "}")
+    ((post-indirect-B) ">")
+    (else
+     (error "Unknown mode."))))
+
+(define (instr->string opcode modifier A-mode A-num B-mode B-num name)
+  (conc opcode
+        "." modifier
+        " " (mode->string A-mode) A-num
+        " " (mode->string B-mode) B-num
+        " ;" name))
+        
 (define initial-instruction
   (make-instr 'DAT 'F 'immediate 0 'immediate 0 '()))
 
@@ -66,26 +57,56 @@
 ;;; Memory setup and addressing
 ;;
 
-(define core (make-vector core-size '()))
-
-(define (core-get i)
-  (vector-ref core i))
-
-(define (core-set! i x)
-  (vector-set! core i x))
-
-(define (initialize-core)
-  (let loop ((i 0))
-    (unless (>= i core-size)
-      (core-set! i (initial-instruction 'copy '()))
-      (loop (+ i 1)))))
-
-(define (dump-core)
-  (let loop ((i 0))
-    (unless (>= i core-size)
-      (print* i ":\t")
-      ((core-get i) 'print)
-      (loop (+ i 1)))))
+(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 '())))
+    (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 '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))
+        (('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))))))))
 
 (define (addr+ . args)
   (foldl (lambda (a b)
@@ -102,34 +123,34 @@
 (define (prog-instrs prog) (list-ref prog 1))
 (define (prog-offset prog) (list-ref prog 2))
 
-(define (install-prog prog addr)
+(define (install-prog core prog addr)
   (let loop ((ptr addr)
              (instrs (prog-instrs prog)))
     (unless (null? instrs)
-      (core-set! ptr ((car instrs) 'copy (prog-name prog)))
+      (core ptr 'copy-from-instr! (car instrs))
       (loop (addr+ ptr 1) (cdr instrs))))
   (make-player (prog-name prog)
                (addr+ addr (prog-offset prog))))
 
-(define (can-install-prog? prog-len addr)
+(define (can-install-prog? core prog-len addr)
   (let loop ((ptr addr)
              (remaining prog-len))
     (if (= remaining 0)
         #t
-        (if (null? ((core-get ptr) 'name))
+        (if (null? (core ptr 'name))
             (loop (addr+ ptr 1)
                   (- remaining 1))
             #f))))
 
-(define (install-progs progs)
+(define (install-progs core progs)
   (let loop ((players '())
              (progs-left progs))
     (if (null? progs-left)
         players
         (let ((addr (pseudo-random-integer core-size))
               (prog (car progs-left)))
-          (if (can-install-prog? (length (prog-instrs prog)) addr)
-              (loop (cons (install-prog prog addr) players)
+          (if (can-install-prog? core (length (prog-instrs prog)) addr)
+              (loop (cons (install-prog core prog addr) players)
                     (cdr progs-left))
               (loop players progs-left))))))
 
@@ -210,13 +231,13 @@
                             ((core-get 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 (addr+ ptr (if (not (instr-zero? B-ptr modifier #f))
+                            ((core-get 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 (addr+ ptr (if (not (instr-zero? B-ptr modifier #t))
+                            ((core-get A-ptr) 'A-num)
+                            1))))
       ((SEQ CMP)
        (list (addr+ ptr (if (compare-instrs A-ptr B-ptr modifier =) 2 1))))
       ((SNE)