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code-gen.scm
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;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; label generator ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define ^^label
(lambda (prefix)
(let ((n 0))
(lambda ()
(set! n (+ n 1))
(string-append
prefix
(number->string n))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-GUL labels ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define ^label-code-gen-GUL-next (^^label "L_void_jump_to_next_label_"))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-generator ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen
(lambda (pe major)
(cond
((equal? (car pe) 'const) (code-gen-const pe))
((equal? (car pe) 'pvar) (code-gen-pvar pe))
((equal? (car pe) 'bvar) (code-gen-bvar pe))
((equal? (car pe) 'fvar) (code-gen-fvar pe))
((equal? (car pe) 'if3) (code-gen-if pe major))
((equal? (car pe) 'or) (code-gen-or pe major))
((equal? (car pe) 'seq) (code-gen-seq pe major))
((equal? (car pe) 'lambda-simple) (code-gen-lambda-simple pe (+ 1 major)))
((equal? (car pe) 'lambda-opt) (code-gen-lambda-opt pe (+ 1 major)))
((equal? (car pe) 'lambda-var) (code-gen-lambda-var pe (+ 1 major)))
((equal? (car pe) 'def) (code-gen-define pe major))
((equal? (car pe) 'applic) (code-gen-applic pe major))
((equal? (car pe) 'tc-applic) (code-gen-tc-applic pe major))
((equal? (car pe) 'set) (code-gen-set pe major))
((equal? (car pe) 'box) (code-gen-box pe major))
((equal? (car pe) 'box-get) (code-gen-box-get pe major))
((equal? (car pe) 'box-set) (code-gen-box-set pe major))
(else (error "unknown expression to handle with: ~s" pe)))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-const ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-const
(lambda (pe)
(let ((const (const->string (get-constant-address (cadr pe)))))
(string-append
"MOV(R0, IMM(" const "));\n"
))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-pvar ;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-pvar
(lambda (pe)
(let ((minor (caddr pe)))
(string-append
"MOV(R0,FPARG(" (number->string (+ minor 2) )"));\n"
))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-bvar ;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-bvar
(lambda (pe)
(with pe
(lambda (bvar var major minor)
(let ((major_s (number->string major))
(minor_s (number->string minor)))
(string-append
"MOV(R0, FPARG(0));\n"
"MOV(R0, INDD(R0, " major_s "));\n"
"MOV(R0, INDD(R0, " minor_s "));\n"
))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-fvar ;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-fvar
(lambda (pe)
(let((free_var (number->string (get-free-var-address (cadr pe)))))
(string-append
"MOV(R0, IND(" free_var "));\n"
))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; if labels ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define ^label-if-else (^^label "L_IF_ELSE_"))
(define ^label-if-exit (^^label "L_IF_EXIT_"))
;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-if ;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-if
(lambda (pe major)
(with pe
(lambda (if3 if-test do-if-true-exp do-if-false-exp)
(let ((test (code-gen if-test major))
(do-if-true (code-gen do-if-true-exp major))
(do-if-false (code-gen do-if-false-exp major))
(L_if-else (^label-if-else))
(L-if-exit (^label-if-exit)))
(string-append
test"\n"
"CMP(R0, SOB_FALSE);\n"
"JUMP_EQ(" L_if-else ");\n"
do-if-true"\n"
"JUMP(" L-if-exit ");\n"
L_if-else ":\n"
do-if-false"\n"
L-if-exit ":\n"))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; lambda-simple labels ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define ^label-lambda-simple-exit (^^label "L_CLOS_EXIT_"))
(define ^label-lambda-simple-code (^^label "L_CLOS_CODE_"))
(define ^label-lambda-simple-env-loop (^^label "L_CLOS_ENV_LOOP_"))
(define ^label-lambda-simple-env-loop-end (^^label "L_CLOS_ENV_LOOP_END_"))
(define ^label-lambda-simple-param-loop (^^label "L_CLOS_PARAM_LOOP_"))
(define ^label-lambda-simple-param-loop-end (^^label "L_CLOS_PARAM_LOOP_END_"))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-lambda-simple ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-lambda-simple
(lambda (pe major)
(with pe
(lambda (lambda-simple args body)
(letrec ((code-gen-body (code-gen body major))
(clos-label (^label-lambda-simple-code))
(env-loop-test (^label-lambda-simple-env-loop))
(env-loop (^label-lambda-simple-param-loop))
(env-loop-end (^label-lambda-simple-env-loop-end))
(param-loop (^label-lambda-simple-param-loop))
(param-loop-end (^label-lambda-simple-param-loop-end))
(exit-label (^label-lambda-simple-exit)))
(string-append
"MOV(R1,FPARG(0))\n" ;old env
;creating new env
"PUSH(IMM(" (number->string major) "));\n"
"CALL(MALLOC);\n" ;after malloc R0 pointer to block
"DROP(1);\n"
"MOV(R2, R0);\n" ;R2 <- pointer to new env
;copy env
"MOV(R4, IMM(1));\n" ;j=1
"MOV(R5, IMM(0));\n" ;i=0
env-loop ":\n"
"CMP(R4, IMM(" (number->string major) "));\n"
"JUMP_GE(" env-loop-end ");\n" ;jump if i>= major to end of loop
;loop body
; "MOV(INDD(R2, R4), INDD(ENV, R5));\n"
"MOV(INDD(R2, R4), INDD(R1, R5));\n" ;R2[j] = R1[i]
"INCR(R4);\n" ;j++
"INCR(R5);\n" ;i++
"JUMP(" env-loop ");\n"
env-loop-end ":\n"
;creating memory for args. parameters for new env
"MOV(R3, FPARG(1));\n" ; R3<- n (number of argument)
"PUSH(R3);\n"
"CALL(MALLOC);\n"
"DROP(1);\n"
"MOV(IND(R2), R0);\n"
"MOV(R10,IND(R2));\n"
;IND(R2) = NEW ENV
;copy args
"MOV(R4, IMM(0));\n" ;i=0
;"MOV(R5, IMM(2));\n" ;j=2 ;OR add
param-loop":\n"
"CMP(R4, R3);\n"
"JUMP_EQ(" param-loop-end ");\n"
"MOV(INDD(R10,R4), FPARG(R4+2));\n"
"INCR(R4);\n"
"JUMP(" param-loop ");\n"
param-loop-end ":\n"
;memory for closure
"PUSH(IMM(3));\n"
"CALL(MALLOC);\n"
"DROP(1);\n"
"MOV(INDD(R0,0), IMM(T_CLOSURE));\n"
"MOV(INDD(R0, 1), R2);\n"
"MOV(INDD(R0, 2), LABEL(" clos-label"));\n"
"JUMP(" exit-label ");\n"
;clousre code
clos-label ":\n"
"PUSH(FP);\n"
"MOV(FP, SP);\n"
;"CMP(FPARG(1),INDD(R0,1));\n"
;"JUMP_NE(L_INCORRECT_NUMBER_OF_ARGS_ERROR);\n"
code-gen-body "\n"
"POP(FP);\n"
"RETURN;\n"
exit-label ":\n"
))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; lambda-opt labels ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define ^label-opt-code (^^label "L_OPT_CLOSURE_CODE_"))
(define ^label-loop-opt-code (^^label "L_LOOP_OPT_CLOSURE_CODE_"))
(define ^label-loop-end-opt-code (^^label "L_END_LOOP_OPT_CLOSURE_CODE_"))
(define ^label-opt-env-loop (^^label "L_OPT_CLOSURE_ENV_LOOP_"))
(define ^label-opt-env-loop-end (^^label "L_OPT_CLOSURE_ENV_LOOP_END_"))
(define ^label-opt-param-loop (^^label "L_OPT_CLOSURE_PARAM_LOOP_"))
(define ^label-opt-param-loop-end (^^label "L_OPT_CLOSURE_PARAM_LOOP_END_"))
(define ^label-loop-1-opt-code (^^label "L_LOOP_1_OPT_CLOSURE_CODE_"))
(define ^label-loop-1-end-opt-code (^^label "L_END_LOOP_1_OPT_CLOSURE_CODE_"))
(define ^label-loop-2-opt-code (^^label "L_LOOP_2_OPT_CLOSURE_CODE_"))
(define ^label-loop-2-end-opt-code (^^label "L_END_LOOP_2_OPT_CLOSURE_CODE_"))
(define ^label-opt-body-code (^^label "L_OPT_BODY_CLOSURE_CODE_"))
(define ^label-opt-exit (^^label "L_OPT_CLOSURE_EXIT_"))
(define ^label-no-opt-code (^^label "L_NO_ARGS_OPT_CLOSURE_"))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-lambda-opt ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-lambda-opt
(lambda (pe major)
(with pe
(lambda (lambda-opt argl opt body)
(letrec ((params-len (length argl))
(opt-code-gen-body (code-gen body major))
(opt-clos-label (^label-opt-code))
(opt-env-loop (^label-opt-env-loop))
(opt-env-loop-end (^label-opt-env-loop-end))
(opt-arg-loop (^label-opt-param-loop))
(opt-arg-loop-end (^label-opt-param-loop-end))
(first-loop-label (^label-loop-opt-code))
(first-loop-label-end (^label-loop-end-opt-code))
(second-loop-label (^label-loop-1-opt-code))
(second-loop-label-end (^label-loop-1-end-opt-code))
(third-loop-label (^label-loop-2-opt-code))
(third-loop-label-end (^label-loop-2-end-opt-code))
(opt-body (^label-opt-body-code))
(no-opt-var (^label-no-opt-code))
(opt-exit-label (^label-opt-exit)))
(string-append
;closure memory
"MOV(R1,FPARG(0))\n" ;old env
;creating new env
"PUSH(IMM(" (number->string major) "));\n"
"CALL(MALLOC);\n" ;after malloc R0 pointer to block
"DROP(1);\n"
"MOV(R2, R0);\n" ;R2 <- pointer to new env
;copy env
"MOV(R4, IMM(1));\n" ;j=1
"MOV(R5, IMM(0));\n" ;i=0
opt-env-loop ":\n"
"CMP(R4, IMM(" (number->string major) "));\n"
"JUMP_GE(" opt-env-loop-end ");\n" ;jump if i>= major to end of loop
;loop body
; "MOV(INDD(R2, R4), INDD(ENV, R5));\n"
"MOV(INDD(R2, R4), INDD(R1, R5));\n" ;R2[j] = R1[i]
"INCR(R4);\n" ;j++
"INCR(R5);\n" ;i++
"JUMP(" opt-env-loop ");\n"
opt-env-loop-end ":\n"
;creating memory for args. parameters for new env
"MOV(R3, FPARG(1));\n" ; R3<- n (number of argument)
"PUSH(R3);\n"
"CALL(MALLOC);\n"
"DROP(1);\n"
"MOV(IND(R2), R0);\n"
"MOV(R10,IND(R2));\n"
;IND(R2) = NEW ENV
;copy args
"MOV(R4, IMM(0));\n" ;i=0
;"MOV(R5, IMM(2));\n" ;j=2 ;OR add
opt-arg-loop":\n"
"CMP(R4, R3);\n"
"JUMP_EQ(" opt-arg-loop-end ");\n"
"MOV(INDD(R10,R4), FPARG(R4+2));\n"
"INCR(R4);\n"
"JUMP(" opt-arg-loop ");\n"
opt-arg-loop-end ":\n"
;memory for closure
"PUSH(IMM(3));\n"
"CALL(MALLOC);\n"
"DROP(1);\n"
"MOV(INDD(R0,0), IMM(T_CLOSURE));\n"
"MOV(INDD(R0, 1), R2);\n"
"MOV(INDD(R0, 2), LABEL(" opt-clos-label "));\n"
"MOV(R1,R0);\n"
"JUMP(" opt-exit-label ");\n"
;clousre code
opt-clos-label ":\n"
"PUSH(FP);\n"
"MOV(FP, SP);\n"
;reorgeniz stack
"CMP(FPARG(1), IMM(" (number->string params-len) "));\n"
"JUMP_LE(" no-opt-var ");\n"
"MOV(R0, SOB_NIL);\n"
"MOV(R11, FPARG(1));\n"
"DECR(R11);\n"
first-loop-label ":\n"
"CMP(R11, IMM(" (number->string (- params-len 1)) "));\n"
"JUMP_EQ(" first-loop-label-end ");\n"
"PUSH(R0);\n"
"PUSH(FPARG(R11+2));\n"
"CALL(MAKE_SOB_PAIR);\n"
"DROP(2);\n"
"DECR(R11);\n"
"JUMP(" first-loop-label ");\n"
first-loop-label-end ":\n"
;stack fixing
"DROP(4);\n"
"DROP(FPARG(1));\n"
"PUSH(R0);\n"
second-loop-label ":\n"
"CMP(R11, IMM(-1));\n"
"JUMP_EQ(" second-loop-label-end ");\n"
"PUSH(FPARG(R11+2));\n"
"DECR(R11);\n"
"JUMP(" second-loop-label ");\n"
second-loop-label-end ":\n"
"PUSH(IMM(" (number->string (+ params-len 1)) "));\n"
"PUSH(FPARG(0));\n"
"PUSH(FPARG(-1));\n"
"PUSH(FPARG(-2));\n"
"MOV(FP, SP);\n"
"JUMP(" opt-body ");\n"
;no opt- moving up the stack
no-opt-var ":\n"
"PUSH(R4); \n"
"PUSH(R5); \n"
"PUSH(R6); \n"
"MOV(R5, IMM(-2)); //source \n"
"MOV(R6, IMM(-3)); //dest \n"
"MOV(R4, FPARG(1)); \n"
"ADD(R4, IMM(4)); \n"
third-loop-label ":\n"
"CMP(R4, IMM(0)); \n"
"JUMP_EQ(" third-loop-label-end ");\n"
"MOV(FPARG(R6), FPARG(R5)); \n"
"INCR(R5); \n"
"INCR(R6); \n"
"DECR(R4); \n"
"JUMP(" third-loop-label ");\n"
third-loop-label-end ":\n"
"INCR(FP); \n"
"INCR(SP); \n"
"MOV(R12,FPARG(1));\n"
"MOV(FPARG(R12+2), SOB_NIL); \n"
"INCR(FPARG(1)); \n"
"POP(R6); \n"
"POP(R5); \n"
"POP(R4); \n"
;run the closure
opt-body ":\n"
opt-code-gen-body "\n"
"POP(FP);\n"
"RETURN;\n"
opt-exit-label ":\n"
"MOV(R0, R1);\n"
))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-define ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-define
(lambda (pe major)
(with pe (lambda (def name sexpr)
(let ((expr (code-gen sexpr major)))
(string-append
"MOV(R8," (number->string (get-free-var-address (cadr name)) ) ");\n"
expr "\n"
"MOV(IND(R8),R0);\n"
"MOV(R0, SOB_VOID);\n"
))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; or labels ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define ^label-or-exit (^^label "L_OR_EXIT_"))
;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-or ;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-or
(lambda (pe major)
(with pe
(lambda (tag seq)
(letrec ((or_exit (^label-or-exit))
(or-code (map (lambda (exp) (code-gen exp major)) seq))
(find-first-true (lambda (x)
(if (null? x) (string-append or_exit ":")
(string-append
(car x) "\n"
"CMP(R0, SOB_FALSE);\n"
"JUMP_NE(" or_exit ");\n"
(find-first-true (cdr x)))))))
(find-first-true or-code))
))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-seq ;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-seq
(lambda (pe major)
(with pe
(lambda (tag seq)
(fold-right
string-append
""
(map (lambda (x) (code-gen x major)) seq))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-applic ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-applic
(lambda (pe major)
(with pe (lambda (applic operator operands)
(letrec
((op (code-gen operator major))
(n (length operands))
(params (reverse (map (lambda (x) (code-gen x major)) operands))))
(string-append
(fold-right
string-append
""
(map (lambda (x)
(string-append
;"MOV(R0, " x");\n"
x"\n"
"PUSH(R0);\n")) params))
"PUSH(IMM(" (number->string n) "));\n";
op"\n"
"CMP(IND(R0), IMM(T_CLOSURE));\n"
"JUMP_NE(APPLIC_NOT_A_CLOUSER_ERROR);\n"
"PUSH(INDD(R0, 1));\n"
"CALLA(INDD(R0, 2));\n"
"DROP(1);\n"
"POP(R1);\n"
"DROP(R1);\n" ))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; tc-applic labels ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define ^label-tc-applic-loop (^^label "TC_APPLIC_LOOP_"))
(define ^label-tc-applic-loop-end (^^label "TC_APPLIC_END_OF_LOOP_"))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-tc-applic ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-tc-applic
(lambda (pe major)
(with pe (lambda (tc-applic operator operands)
(letrec ((tc-applic-loop (^label-tc-applic-loop))
(tc-applic-loop-end (^label-tc-applic-loop-end))
(op (code-gen operator major))
(m (length operands))
(params (reverse (our-map (lambda (x) (code-gen x major)) operands))))
(string-append
(string-append
;push arguments to stack
(fold-right
string-append
""
(our-map (lambda (x)
(string-append
x"\n"
"PUSH(R0);\n")) params))
;end of pushing args
"PUSH(IMM(" (number->string m) "));\n" ;push m (number of arguments for )
op"\n"
"CMP(INDD(R0,0), IMM(T_CLOSURE));\n"
"JUMP_NE(APPLIC_NOT_A_CLOUSER_ERROR);\n"
"PUSH(INDD(R0, 1));\n" ;push env of proc-BLA
"PUSH(FPARG(-1));\n" ;push old return address
"MOV(R1, FPARG(-2));\n" ;copy the old FP . R4<-old-frame-pointer
"MOV(R5, STARG(1));\n" ;R5 contains m (number of argument )
"ADD(R5, 3);\n"
"MOV(R3, FPARG(1));\n" ;R3<- n number of arguments in stack from old frame.
"MOV(R6, IMM(0));\n"
"MOV(SP, FP);\n" ;
"SUB(SP,R3);\n"
"SUB(SP, 4);\n" ;fp-m-4
;loop
tc-applic-loop ":\n"
"CMP(R6, R5);\n"
"JUMP_EQ(" tc-applic-loop-end ");\n"
"PUSH(LOCAL(R6));\n"
"INCR(R6);\n"
"JUMP(" tc-applic-loop ");\n"
tc-applic-loop-end ":\n"
"MOV(FP, R1);\n"
"JUMPA(INDD(R0, 2));\n"
)))))))
;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; code-gen-set ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-set
(lambda (pe major)
(with pe
(lambda (set var value)
(cond ((equal? 'pvar (car var)) (code-gen-set-pvar pe major))
((equal? 'bvar (car var)) (code-gen-set-bvar pe major))
((equal? 'fvar (car var)) (code-gen-set-fvar pe major))
(else (display "error in code-gen-set")))))))
(define code-gen-set-pvar
(lambda (pe major)
(with pe
(lambda (set var value)
(let ((minor (caddr var))
(coded-value (code-gen value major)))
(string-append
coded-value "\n"
"MOV(FPARG(" (number->string (+ minor 2)) "),R0);\n"
"MOV(R0,IMM(SOB_VOID));\n"
))))))
(define code-gen-set-bvar
(lambda (pe major)
(with pe
(lambda (set var value)
(let ((var_major (caddr var))
(var_minor (cadddr var))
(coded-value (code-gen value major)))
(string-append
coded-value "\n"
"MOV(R1, FPARG(0));\n"
"MOV(R1, INDD(R1, " (number->string var_major) "));\n"
"MOV(R1, INDD(R1, " (number->string var_minor) "));\n"
"MOV(R1, R0);\n"
"MOV(R0,IMM(SOB_VOID));\n"
))))))
(define code-gen-set-fvar
(lambda (pe major)
(with pe
(lambda (set var value)
(let ((free_var (number->string (get-free-var-address (cadr var))))
(coded-value (code-gen value major)))
(string-append
coded-value "\n"
"MOV(IND(" free_var "),R0);\n"
"MOV(R0,IMM(SOB_VOID));\n"
))))))
;;;;;;;;;;;;;;;;;;;;;;;
;;; code-gen-box ;;;;
;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-box
(lambda (pe major)
(with pe
(lambda (box var)
(let ((coded-var (code-gen var major))
(minor (caddr var)))
(string-append
coded-var "\n"
"MOV(R1,R0);\n"
"PUSH(1);\n"
"CALL(MALLOC);\n"
"DROP(1);\n"
"MOV(IND(R0),R1);\n"
"MOV(FPARG(" (number->string (+ minor 2)) "),R0);\n"
))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;
;; code-gen-box-get ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-box-get
(lambda (pe major)
(with pe
(lambda (box-get var)
(cond ((equal? 'pvar (car var)) (code-gen-box-get-pvar pe major))
((equal? 'bvar (car var))(code-gen-box-get-bvar pe major))
(else (display "error in code-gen-box-get"))
)))))
(define code-gen-box-get-pvar
(lambda (pe major)
(with pe
(lambda (box-get var)
(let ((coded-var (code-gen var major))
(minor (caddr var)))
(string-append
coded-var "\n"
"MOV(R0, FPARG(" (number->string (+ minor 2)) "));\n"
"MOV(R0,IND(R0));\n"
))))))
(define code-gen-box-get-bvar
(lambda (pe major)
(with pe
(lambda (box-get var)
(let ((coded-var (code-gen var major))
(var_major (caddr var))
(var_minor (cadddr var)))
(string-append
"MOV(R1, FPARG(0));\n"
"MOV(R1, INDD(R1 ," (number->string var_major) "));\n"
"MOV(R1, INDD(R1 ," (number->string var_minor) "));\n"
"MOV(R0,IND(R1));\n"
))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;
;; code-gen-box-set ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-box-set
(lambda (pe major)
(with pe
(lambda (box-set var value)
(cond ((equal? 'pvar (car var)) (code-gen-box-set-pvar pe major))
((equal? 'bvar (car var)) (code-gen-box-set-bvar pe major))
(else (display "error in code-gen-box-get"))
)))))
(define code-gen-box-set-pvar
(lambda (pe major)
(with pe
(lambda (set var value)
(let ((minor (caddr var))
(coded-value (code-gen value major)))
(string-append
coded-value "\n"
"MOV(R1 ,FPARG(" (number->string (+ minor 2)) "));\n"
"MOV(IND(R1),R0);\n"
"MOV(R0,IMM(SOB_VOID));\n"
))))))
(define code-gen-box-set-bvar
(lambda (pe major)
(with pe
(lambda (set var value)
(let ((var_major (caddr var))
(var_minor (cadddr var))
(coded-value (code-gen value major)))
(string-append
coded-value "\n"
"MOV(R1, FPARG(0));\n"
"MOV(R1, INDD(R1, " (number->string var_major) "));\n"
"MOV(R1, INDD(R1, " (number->string var_minor) "));\n"
"MOV(IND(R1), R0);\n"
"MOV(R0,IMM(SOB_VOID));\n"
))))))
(define code-gen-GUL ;print result of sexpr
(lambda ()
(letrec ((next_expr (^label-code-gen-GUL-next) ))
(string-append
"\nCMP(R0,SOB_VOID);\n"
"JUMP_EQ ("next_expr ");\n"
"PUSH(R0);\n"
"CALL(WRITE_SOB);\n"
"DROP(1);\n"
"CALL(NEWLINE);\n"
"DROP(1);\n"
next_expr ":\n"
))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;; lambda-variadic labels ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define ^label-variadic-exit (^^label "L_VARIADIC_CLOSURE_EXIT_"))
(define ^label-variadic-code (^^label "L_VARIADIC_CLOSURE_CODE_"))
(define ^label-variadic-env-loop (^^label "L_VARIADIC_CLOSURE_ENV_LOOP_"))
(define ^label-variadic-env-loop-end (^^label "L_VARIADIC_CLOSURE_ENV_LOOP_END_"))
(define ^label-variadic-param-loop (^^label "L_VARIADIC_CLOSURE_PARAM_LOOP_"))
(define ^label-variadic-param-loop-end (^^label "L_VARIADIC_CLOSURE_PARAM_LOOP_END_"))
(define ^label-loop-variadic-code (^^label "L_LOOP_VARIADIC_CLOSURE_CODE_"))
(define ^label-loop-end-variadic-code (^^label "L_END_LOOP_VARIADIC_CLOSURE_CODE_"))
(define ^label-no-args-variadic-code (^^label "L_NO_ARGS_VARIADIC_CLOSURE_CODE_"))
(define ^label-variadic-body-code (^^label "L_VARIADIC_BODY_CLOSURE_CODE_"))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; code-gen-lambda-var ;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define code-gen-lambda-var
(lambda (pe major)
(with pe
(lambda (lambda-var argl body)
(letrec
((variadic-code-gen-body (code-gen body major))
(variadic-clos-label (^label-variadic-code))
(variadic-env-loop (^label-variadic-env-loop))
(variadic-env-loop-end (^label-variadic-env-loop-end))
(variadic-param-loop (^label-variadic-param-loop))
(variadic-param-loop-end (^label-variadic-param-loop-end))
(variadic-loop-label (^label-loop-variadic-code))
(variadic-loop-label-end (^label-loop-end-variadic-code))
(variadic-no-args (^label-no-args-variadic-code))
(variadic-body (^label-variadic-body-code))
(variadic-exit-label (^label-variadic-exit)))
(string-append
;closure memory
"MOV(R1,FPARG(0))\n" ;old env
;creating new env
"PUSH(IMM(" (number->string major) "));\n"
"CALL(MALLOC);\n" ;after malloc R0 pointer to block
"DROP(1);\n"
"MOV(R2, R0);\n" ;R2 <- pointer to new env
;copy env
"MOV(R4, IMM(1));\n" ;j=1
"MOV(R5, IMM(0));\n" ;i=0
variadic-env-loop ":\n"
"CMP(R4, IMM(" (number->string major) "));\n"
"JUMP_GE(" variadic-env-loop-end ");\n" ;jump if i>= major to end of loop
;loop body
; "MOV(INDD(R2, R4), INDD(ENV, R5));\n"
"MOV(INDD(R2, R4), INDD(R1, R5));\n" ;R2[j] = R1[i]
"INCR(R4);\n" ;j++
"INCR(R5);\n" ;i++
"JUMP(" variadic-env-loop ");\n"
variadic-env-loop-end ":\n"
;creating memory for args. parameters for new env
"MOV(R3, FPARG(1));\n" ; R3<- n (number of argument)
"PUSH(R3);\n"
"CALL(MALLOC);\n"
"DROP(1);\n"
"MOV(IND(R2), R0);\n"
"MOV(R10,IND(R2));\n"
;IND(R2) = NEW ENV
;copy args
"MOV(R4, IMM(0));\n" ;i=0
;"MOV(R5, IMM(2));\n" ;j=2 ;OR add
variadic-param-loop":\n"
"CMP(R4, R3);\n"
"JUMP_EQ(" variadic-param-loop-end ");\n"
"MOV(INDD(R10,R4), FPARG(R4+2));\n"
"INCR(R4);\n"
"JUMP(" variadic-param-loop ");\n"
variadic-param-loop-end ":\n"
;memory for closure
"PUSH(IMM(3));\n"
"CALL(MALLOC);\n"
"DROP(1);\n"
"MOV(INDD(R0,0), IMM(T_CLOSURE));\n"
"MOV(INDD(R0, 1), R2);\n"
"MOV(INDD(R0, 2), LABEL(" variadic-clos-label "));\n"
"MOV(R1,R0);\n"
"JUMP(" variadic-exit-label ");\n"
;clousre code
variadic-clos-label ":\n"
"PUSH(FP);\n"
"MOV(FP, SP);\n"
;reorgenize stack
"PUSH(R4);\n"
"MOV(R4, FPARG(1));\n"
"CMP(R4, 0);\n"
"JUMP_EQ(" variadic-no-args");\n"
"MOV(R0, SOB_NIL);\n"
"DECR(R4);\n"
variadic-loop-label ":\n"
"CMP(R4, -1);\n"
"JUMP_EQ(" variadic-loop-label-end ");\n"
"PUSH(R0);\n"
"PUSH(FPARG(R4+2));\n"
"CALL(MAKE_SOB_PAIR);\n"
"DROP(2);\n"
"DECR(R4);\n"
"JUMP(" variadic-loop-label ");\n"
variadic-loop-label-end ":\n"
"POP(R4);\n"
;stack fixing
"DROP(4);\n"
"DROP(FPARG(1));\n"
"PUSH(R0);\n"
"PUSH(IMM(1));\n"
"PUSH(FPARG(0));\n"
"PUSH(FPARG(-1));\n"
"PUSH(FPARG(-2));\n"
"MOV(FP, SP);\n"
"JUMP(" variadic-body ");\n"
variadic-no-args ":\n"
"POP(R4);\n"
"MOV(FPARG(-3), FPARG(-2));\n"
"MOV(FPARG(-2), FPARG(-1));\n"
"MOV(FPARG(-1), FPARG(0));\n"
"MOV(FPARG(0), IMM(1));\n"
"MOV(FPARG(1), SOB_NIL);\n"
"INCR(FP);\n"
"INCR(SP);\n"
variadic-body ":\n"
variadic-code-gen-body "\n"
"POP(FP);\n"
"RETURN;\n"
variadic-exit-label ":\n"
"MOV(R0, R1);\n"
))))))