Implement 5.52 translate Scheme to C
parent
15057b52d4
commit
90a1f8a573
179
ex-5_50-52.scm
179
ex-5_50-52.scm
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@ -1,71 +1,71 @@
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(load "shared/util")
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;(load "shared/ch5-regsim")
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;(load "shared/ch5-compiler")
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;(load "shared/ch5-eceval-support")
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;
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;(display "\nex-5.50 - compile-metacircular-evaluator\n")
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;
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;(define mceval-code
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; (let ((port (open-input-file "shared/ch4-mceval.scm")))
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; (read port)))
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;
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;(define mceval-compiled
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; (append
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; (list '(assign env (op get-global-environment)))
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; (statements (compile mceval-code 'val 'next))))
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;
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;;; write assembly to file for debug purposes
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;; (let ((port (open-output-file "f-mceval-compiled.scm")))
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;; (define (write-list-to-port xs port)
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;; (if (null? xs) '()
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;; (begin (display (car xs) port) (display "\n" port)
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;; (write-list-to-port (cdr xs) port))))
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;; (write-list-to-port mceval-compiled port)
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;; (close-output-port port))
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;
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;(define eceval-operations (list
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; (list 'list list)
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; (list 'cons cons)
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;
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; (list 'true? true?)
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; (list 'false? false?) ;for compiled code
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; (list 'make-procedure make-procedure)
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; (list 'compound-procedure? compound-procedure?)
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; (list 'procedure-parameters procedure-parameters)
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; (list 'procedure-body procedure-body)
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; (list 'procedure-environment procedure-environment)
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; (list 'extend-environment extend-environment)
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; (list 'lookup-variable-value lookup-variable-value)
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; (list 'set-variable-value! set-variable-value!)
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; (list 'define-variable! define-variable!)
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; (list 'primitive-procedure? primitive-procedure?)
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; (list 'apply-primitive-procedure apply-primitive-procedure)
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; (list 'prompt-for-input prompt-for-input)
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; (list 'announce-output announce-output)
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; (list 'user-print user-print)
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; (list 'empty-arglist empty-arglist)
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; (list 'adjoin-arg adjoin-arg)
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; (list 'last-operand? last-operand?)
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; (list 'no-more-exps? no-more-exps?) ;for non-tail-recursive machine
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; (list 'get-global-environment get-global-environment)
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;
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; ;;for compiled code (also in eceval-support.scm)
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; (list 'make-compiled-procedure make-compiled-procedure)
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; (list 'compiled-procedure? compiled-procedure?)
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; (list 'compiled-procedure-entry compiled-procedure-entry)
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; (list 'compiled-procedure-env compiled-procedure-env)
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; ))
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;
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;(define the-global-environment (setup-environment))
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;(define mceval-machine
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; (make-machine
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; '(exp env val proc argl continue unev)
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; eceval-operations
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; mceval-compiled))
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;
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;(start mceval-machine)
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;;; (factorial 5) computed by compiled mceval executed by register simulator
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;(assert (get-register-contents mceval-machine 'val) 120)
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(load "shared/ch5-regsim")
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(load "shared/ch5-compiler")
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(load "shared/ch5-eceval-support")
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(display "\nex-5.50 - compile-metacircular-evaluator\n")
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(define mceval-code
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(let ((port (open-input-file "shared/ch4-mceval.scm")))
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(read port)))
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(define mceval-compiled
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(append
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(list '(assign env (op get-global-environment)))
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(statements (compile mceval-code 'val 'next))))
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;; write assembly to file for debug purposes
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; (let ((port (open-output-file "f-mceval-compiled.scm")))
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; (define (write-list-to-port xs port)
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; (if (null? xs) '()
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; (begin (display (car xs) port) (display "\n" port)
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; (write-list-to-port (cdr xs) port))))
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; (write-list-to-port mceval-compiled port)
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; (close-output-port port))
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(define eceval-operations (list
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(list 'list list)
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(list 'cons cons)
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(list 'true? true?)
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(list 'false? false?) ;for compiled code
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(list 'make-procedure make-procedure)
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(list 'compound-procedure? compound-procedure?)
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(list 'procedure-parameters procedure-parameters)
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(list 'procedure-body procedure-body)
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(list 'procedure-environment procedure-environment)
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(list 'extend-environment extend-environment)
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(list 'lookup-variable-value lookup-variable-value)
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(list 'set-variable-value! set-variable-value!)
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(list 'define-variable! define-variable!)
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(list 'primitive-procedure? primitive-procedure?)
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(list 'apply-primitive-procedure apply-primitive-procedure)
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(list 'prompt-for-input prompt-for-input)
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(list 'announce-output announce-output)
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(list 'user-print user-print)
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(list 'empty-arglist empty-arglist)
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(list 'adjoin-arg adjoin-arg)
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(list 'last-operand? last-operand?)
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(list 'no-more-exps? no-more-exps?) ;for non-tail-recursive machine
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(list 'get-global-environment get-global-environment)
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;;for compiled code (also in eceval-support.scm)
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(list 'make-compiled-procedure make-compiled-procedure)
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(list 'compiled-procedure? compiled-procedure?)
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(list 'compiled-procedure-entry compiled-procedure-entry)
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(list 'compiled-procedure-env compiled-procedure-env)
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))
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(define the-global-environment (setup-environment))
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(define mceval-machine
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(make-machine
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'(exp env val proc argl continue unev)
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eceval-operations
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mceval-compiled))
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(start mceval-machine)
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;; (factorial 5) computed by compiled mceval executed by register simulator
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(assert (get-register-contents mceval-machine 'val) 120)
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;; Uncomment driver loop within shared/ch4-mceval.scm and load in mit-scheme
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;; for REPL:
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@ -93,27 +93,31 @@
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(load "shared/scm2c/translator")
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; My goal is to create proof of concept. Not to compile the metacircular
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; evaluator.
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(define c-preamble '(
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"#include <stdio.h>"
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"#include <stdint.h>"
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"#include <stdlib.h>"
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""
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"#include \"datum.h\""
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"#include \"env.h\""
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"#include \"stack.h\""
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""
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"int main() {"
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" datum *val;"
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" datum *argl[10];"
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" datum *proc;"
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" void *cont, *entry, *env;"
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" datum *val, *argl, *proc;"
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" void *continu, *entry;"
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" environment *env = get_global_environment();"
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" stack *proc_stack = create_stack();"
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" stack *env_stack = create_stack();"
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" stack *argl_stack = create_stack();"
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" stack *continu_stack = create_stack();"
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""
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))
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(define c-epilog '(
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" printf(\"%u\\n\", val->value);"
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" print_datum(val);"
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" printf(\"\\n\");"
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"}"
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""
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))
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(define (compile-to-file file-name code)
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@ -137,7 +141,28 @@
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(display "]") (newline)
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(close-output-port port)))
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(compile-to-file "shared/scm2c/main.c" '(+ 42 3))
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(compile-to-file
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"shared/scm2c/main.c"
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'(begin
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(define (fac n) (if (= n 1) 1 (* n (fac (- n 1)))))
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(define (fib n) (if (< n 2) 1 (+ (fib (- n 2)) (fib (- n 1)))))
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(fac 10)))
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; write assembly to file for debug purposes
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; I haven't implemented all expressions and data types, so I cannot
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; λ → cd shared/scm2c/
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; λ → make
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; λ → ./aout
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; 3628800
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; I haven't implemented all expressions and datatypes, so I cannot compile the
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; metacircular evaluator. Nevertheless, I have implemented procedure
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; definitions and environment support, and I can compute factorials and
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; Fibonacci numbers. That's all that ever counts. The whole C program is a
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; massive memory leak that I could resolve by using reference-counting
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; pointers. I am happy, grateful, and proud that I have finished working
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; through this book. All that remains are the summaries for Chapters 4 and 5,
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; and then I will move on to even more ambitious goals. LFG!
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(display "[FIN :]\n")
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@ -0,0 +1,87 @@
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#include <stdlib.h>
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#include <stdio.h>
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#include "datum.h"
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datum* cons(datum *e, datum *xs) {
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e->next = xs;
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return e;
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}
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datum* const_i32(int32_t value) {
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datum* r = malloc(sizeof(datum));
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if (!r) exit(-1);
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r->type = datum_type_i32;
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r->value = value;
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return r;
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}
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datum* const_bool(int32_t value) {
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datum* r = malloc(sizeof(datum));
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if (!r) exit(-1);
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r->type = datum_type_bool;
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r->value = value;
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return r;
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}
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datum* const_primitive_proc(datum* (*primitive_procedure) (datum*)) {
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datum* r = malloc(sizeof(datum));
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if (!r) exit(-1);
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r->type = datum_type_primitive_proc;
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r->primitive_procedure = primitive_procedure;
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return r;
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}
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int primitive_procedure(datum* d) {
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if (d->type == datum_type_primitive_proc) {
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return 1;
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}
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return 0;
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}
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int is_false(datum *d) {
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if (d->type == datum_type_i32) {
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return 0;
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} else if (d->type == datum_type_bool) {
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return !d->value;
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} else if (d->next) {
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return 0;
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} else {
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return 1;
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}
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}
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int datum_eq(datum *a, datum *b) {
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if ((a->type == datum_type_i32) && (b->type == datum_type_i32)) {
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return a->value == b->value;
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}
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return 0;
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}
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int datum_lt(datum *a, datum *b) {
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if ((a->type == datum_type_i32) && (b->type == datum_type_i32)) {
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return a->value < b->value;
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}
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return 0;
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}
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void print_datum(datum* d) {
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if (!d) {
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printf("ERROR - DATUM is null");
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exit(-1);
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}
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switch (d->type) {
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case datum_type_i32:
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printf("%i", d->value);
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break;
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default:
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printf("Cannot print type %u", d->type);
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break;
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}
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}
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void* compiled_procedure_entry(datum* d) {
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return d->compiled_procedure_entry;
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}
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@ -1,3 +1,8 @@
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#ifndef DATUM_H
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#define DATUM_H
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#include <stdint.h>
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enum datum_type {
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datum_type_i32,
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datum_type_bool,
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typedef struct datum {
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enum datum_type type;
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int32_t value;
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void* (*primitive_procedure) (void**);
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void* compiled_pr;
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struct datum* (*primitive_procedure) (struct datum*);
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void* compiled_procedure_entry;
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void* env;
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struct datum *next;
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} datum;
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typedef struct procedure {
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} procedure;
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datum* cons(datum *e, datum *xs);
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datum* const_i32(int32_t value);
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datum* const_bool(int32_t value);
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datum* const_primitive_proc(datum* (*primitive_procedure) (datum*));
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int primitive_procedure(datum* d);
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int is_false(datum *d);
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int datum_eq(datum *a, datum *b);
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int datum_lt(datum *a, datum *b);
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void print_datum(datum* d);
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void* compiled_procedure_entry(datum* d);
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datum* const_int(int32_t value) {
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datum* r = malloc(sizeof(datum));
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if (!r) exit(-1);
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r->type = datum_type_i32;
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r->value = value;
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}
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int primitive_procedure(datum* d) {
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if (d->type == datum_type_primitive_proc) {
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return 1;
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}
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return 0;
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}
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datum* add(datum** args) {
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size_t i = 0;
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int32_t result = 0;
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while (args[i] != NULL) {
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if (args[i]->type != datum_type_i32) {
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printf("ADD - invalid type\n");
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exit(-1);
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}
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result += args[i]->value;
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i += 1;
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}
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return const_int(result);
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}
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void* compiled_procedure_entry(void* p) {
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return compiled_procedure_entry;
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}
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datum* lookup_variable_value(char* c, void* e) {
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datum* r = malloc(sizeof(datum));
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if (!r) exit(-1);
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r->type = datum_type_primitive_proc;
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r->primitive_procedure = (void*) &add;
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return r;
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}
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#endif
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@ -0,0 +1,97 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "env.h"
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#include "primitives.h"
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datum* define_variable(const char *var, datum *value, environment *env) {
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if (env->first_mapping == NULL) {
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env->first_mapping = new_mapping(var, value);
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return NULL;
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}
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mapping* m = env->first_mapping;
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while (1) {
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if (strcmp(var, m->variable) == 0) {
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m->value = value;
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}
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if (m->next) {
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m = m->next;
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} else {
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break;
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}
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}
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m->next = new_mapping(var, value);
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return NULL;
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}
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datum* lookup_variable_value(char* var, environment* env) {
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environment* e = env;
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mapping* m;
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while (e) {
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m = e->first_mapping;
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while (m) {
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if (strcmp(var, m->variable) == 0) {
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return m->value;
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}
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m = m->next;
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}
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e = e->outer_env;
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}
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printf("UNDEFINED VARIABLE %s", var);
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exit(-1);
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}
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datum* make_compiled_proc(void* entry, environment* e) {
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datum* r = malloc(sizeof(datum));
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if (!r) exit(-1);
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r->type = datum_type_compiled_proc;
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r->compiled_procedure_entry = entry;
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r->env = e;
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return r;
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}
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environment* extend_environment(const char **args, datum *argl, environment* outer_env) {
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environment* env = malloc(sizeof(environment));
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if (!env) exit(-1);
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env->first_mapping = NULL;
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env->outer_env = outer_env;
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size_t i = 0;
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while (argl && args[i]) {
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define_variable(args[i], argl, env);
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i += 1;
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argl = argl->next;
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}
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return env;
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}
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environment* get_global_environment(void) {
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environment* env = malloc(sizeof(environment));
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if (!env) exit(-1);
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env->first_mapping = NULL;
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env->outer_env = NULL;
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define_variable("+", const_primitive_proc(&add), env);
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define_variable("-", const_primitive_proc(&sub), env);
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define_variable("*", const_primitive_proc(&mul), env);
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define_variable("=", const_primitive_proc(&eq), env);
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define_variable("<", const_primitive_proc(<), env);
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define_variable("display", const_primitive_proc(&display), env);
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define_variable("newline", const_primitive_proc(&newline), env);
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return env;
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}
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mapping* new_mapping(const char* var, datum* value) {
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mapping* m = malloc(sizeof(mapping));
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if (!m) exit(-1);
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m->variable = var;
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m->value = value;
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m->next = NULL;
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return m;
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}
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@ -0,0 +1,25 @@
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#ifndef ENV_H
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#define ENV_H
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#include "datum.h"
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|
||||
typedef struct mapping {
|
||||
const char *variable;
|
||||
datum *value;
|
||||
struct mapping *next;
|
||||
} mapping;
|
||||
|
||||
typedef struct environment {
|
||||
struct mapping *first_mapping;
|
||||
struct environment *outer_env;
|
||||
} environment;
|
||||
|
||||
datum* define_variable(const char *var, datum *value, environment *env);
|
||||
datum* lookup_variable_value(char* c, environment* e);
|
||||
datum* make_compiled_proc(void* entry, environment* e);
|
||||
environment* extend_environment(const char **args, datum *argl, environment* env);
|
||||
environment* get_global_environment(void);
|
||||
mapping* new_mapping(const char* var, datum* value);
|
||||
|
||||
#endif
|
||||
|
|
@ -3,27 +3,230 @@
|
|||
#include <stdlib.h>
|
||||
|
||||
#include "datum.h"
|
||||
#include "env.h"
|
||||
#include "stack.h"
|
||||
|
||||
int main() {
|
||||
datum *val;
|
||||
datum *argl[10];
|
||||
datum *proc;
|
||||
void *cont, *entry, *env;
|
||||
datum *val, *argl, *proc;
|
||||
void *continu, *entry;
|
||||
environment *env = get_global_environment();
|
||||
stack *proc_stack = create_stack();
|
||||
stack *env_stack = create_stack();
|
||||
stack *argl_stack = create_stack();
|
||||
stack *continu_stack = create_stack();
|
||||
|
||||
val = make_compiled_proc(&&entry29, env);
|
||||
goto afterlambda28;
|
||||
entry29:
|
||||
env = proc->env;
|
||||
const char *argv30[] = {"n", };
|
||||
env = extend_environment(argv30, argl, env);
|
||||
save(continu, continu_stack);
|
||||
save(env, env_stack);
|
||||
proc = lookup_variable_value("=", env);
|
||||
val = const_i32(1);
|
||||
argl = cons(val, NULL);
|
||||
val = lookup_variable_value("n", env);
|
||||
argl = cons(val, argl);
|
||||
if (primitive_procedure(proc) == 1)
|
||||
goto primitivebranch45;
|
||||
goto compiledbranch44;
|
||||
compiledbranch44:
|
||||
continu = &&aftercall43;
|
||||
entry = compiled_procedure_entry(proc);
|
||||
goto *entry;
|
||||
primitivebranch45:
|
||||
val = (*proc->primitive_procedure)(argl);
|
||||
aftercall43:
|
||||
env = restore(env_stack);
|
||||
continu = restore(continu_stack);
|
||||
if(is_false(val))
|
||||
goto falsebranch32;
|
||||
goto truebranch33;
|
||||
truebranch33:
|
||||
val = const_i32(1);
|
||||
goto *continu;
|
||||
falsebranch32:
|
||||
proc = lookup_variable_value("*", env);
|
||||
save(continu, continu_stack);
|
||||
save(proc, proc_stack);
|
||||
save(env, env_stack);
|
||||
proc = lookup_variable_value("fac", env);
|
||||
save(proc, proc_stack);
|
||||
proc = lookup_variable_value("-", env);
|
||||
val = const_i32(1);
|
||||
argl = cons(val, NULL);
|
||||
val = lookup_variable_value("n", env);
|
||||
argl = cons(val, argl);
|
||||
if (primitive_procedure(proc) == 1)
|
||||
goto primitivebranch36;
|
||||
goto compiledbranch35;
|
||||
compiledbranch35:
|
||||
continu = &&aftercall34;
|
||||
entry = compiled_procedure_entry(proc);
|
||||
goto *entry;
|
||||
primitivebranch36:
|
||||
val = (*proc->primitive_procedure)(argl);
|
||||
aftercall34:
|
||||
argl = cons(val, NULL);
|
||||
proc = restore(proc_stack);
|
||||
if (primitive_procedure(proc) == 1)
|
||||
goto primitivebranch39;
|
||||
goto compiledbranch38;
|
||||
compiledbranch38:
|
||||
continu = &&aftercall37;
|
||||
entry = compiled_procedure_entry(proc);
|
||||
goto *entry;
|
||||
primitivebranch39:
|
||||
val = (*proc->primitive_procedure)(argl);
|
||||
aftercall37:
|
||||
argl = cons(val, NULL);
|
||||
env = restore(env_stack);
|
||||
val = lookup_variable_value("n", env);
|
||||
argl = cons(val, argl);
|
||||
proc = restore(proc_stack);
|
||||
continu = restore(continu_stack);
|
||||
if (primitive_procedure(proc) == 1)
|
||||
goto primitivebranch42;
|
||||
goto compiledbranch41;
|
||||
compiledbranch41:
|
||||
entry = compiled_procedure_entry(proc);
|
||||
goto *entry;
|
||||
primitivebranch42:
|
||||
val = (*proc->primitive_procedure)(argl);
|
||||
goto *continu;
|
||||
aftercall40:
|
||||
afterif31:
|
||||
afterlambda28:
|
||||
val = define_variable("fac", val, env);
|
||||
val = make_compiled_proc(&&entry5, env);
|
||||
goto afterlambda4;
|
||||
entry5:
|
||||
env = proc->env;
|
||||
const char *argv6[] = {"n", };
|
||||
env = extend_environment(argv6, argl, env);
|
||||
save(continu, continu_stack);
|
||||
save(env, env_stack);
|
||||
proc = lookup_variable_value("<", env);
|
||||
val = const_i32(2);
|
||||
argl = cons(val, NULL);
|
||||
val = lookup_variable_value("n", env);
|
||||
argl = cons(val, argl);
|
||||
if (primitive_procedure(proc) == 1)
|
||||
goto primitivebranch27;
|
||||
goto compiledbranch26;
|
||||
compiledbranch26:
|
||||
continu = &&aftercall25;
|
||||
entry = compiled_procedure_entry(proc);
|
||||
goto *entry;
|
||||
primitivebranch27:
|
||||
val = (*proc->primitive_procedure)(argl);
|
||||
aftercall25:
|
||||
env = restore(env_stack);
|
||||
continu = restore(continu_stack);
|
||||
if(is_false(val))
|
||||
goto falsebranch8;
|
||||
goto truebranch9;
|
||||
truebranch9:
|
||||
val = const_i32(1);
|
||||
goto *continu;
|
||||
falsebranch8:
|
||||
proc = lookup_variable_value("+", env);
|
||||
val = const_int(3);
|
||||
argl[0] = val;
|
||||
val = const_int(42);
|
||||
argl[1] = val;
|
||||
argl[2] = NULL;
|
||||
save(continu, continu_stack);
|
||||
save(proc, proc_stack);
|
||||
save(env, env_stack);
|
||||
proc = lookup_variable_value("fib", env);
|
||||
save(proc, proc_stack);
|
||||
proc = lookup_variable_value("-", env);
|
||||
val = const_i32(1);
|
||||
argl = cons(val, NULL);
|
||||
val = lookup_variable_value("n", env);
|
||||
argl = cons(val, argl);
|
||||
if (primitive_procedure(proc) == 1)
|
||||
goto primitivebranch18;
|
||||
goto compiledbranch17;
|
||||
compiledbranch17:
|
||||
continu = &&aftercall16;
|
||||
entry = compiled_procedure_entry(proc);
|
||||
goto *entry;
|
||||
primitivebranch18:
|
||||
val = (*proc->primitive_procedure)(argl);
|
||||
aftercall16:
|
||||
argl = cons(val, NULL);
|
||||
proc = restore(proc_stack);
|
||||
if (primitive_procedure(proc) == 1)
|
||||
goto primitivebranch21;
|
||||
goto compiledbranch20;
|
||||
compiledbranch20:
|
||||
continu = &&aftercall19;
|
||||
entry = compiled_procedure_entry(proc);
|
||||
goto *entry;
|
||||
primitivebranch21:
|
||||
val = (*proc->primitive_procedure)(argl);
|
||||
aftercall19:
|
||||
argl = cons(val, NULL);
|
||||
env = restore(env_stack);
|
||||
save(argl, argl_stack);
|
||||
proc = lookup_variable_value("fib", env);
|
||||
save(proc, proc_stack);
|
||||
proc = lookup_variable_value("-", env);
|
||||
val = const_i32(2);
|
||||
argl = cons(val, NULL);
|
||||
val = lookup_variable_value("n", env);
|
||||
argl = cons(val, argl);
|
||||
if (primitive_procedure(proc) == 1)
|
||||
goto primitivebranch12;
|
||||
goto compiledbranch11;
|
||||
compiledbranch11:
|
||||
continu = &&aftercall10;
|
||||
entry = compiled_procedure_entry(proc);
|
||||
goto *entry;
|
||||
primitivebranch12:
|
||||
val = (*proc->primitive_procedure)(argl);
|
||||
aftercall10:
|
||||
argl = cons(val, NULL);
|
||||
proc = restore(proc_stack);
|
||||
if (primitive_procedure(proc) == 1)
|
||||
goto primitivebranch15;
|
||||
goto compiledbranch14;
|
||||
compiledbranch14:
|
||||
continu = &&aftercall13;
|
||||
entry = compiled_procedure_entry(proc);
|
||||
goto *entry;
|
||||
primitivebranch15:
|
||||
val = (*proc->primitive_procedure)(argl);
|
||||
aftercall13:
|
||||
argl = restore(argl_stack);
|
||||
argl = cons(val, argl);
|
||||
proc = restore(proc_stack);
|
||||
continu = restore(continu_stack);
|
||||
if (primitive_procedure(proc) == 1)
|
||||
goto primitivebranch24;
|
||||
goto compiledbranch23;
|
||||
compiledbranch23:
|
||||
entry = compiled_procedure_entry(proc);
|
||||
goto *entry;
|
||||
primitivebranch24:
|
||||
val = (*proc->primitive_procedure)(argl);
|
||||
goto *continu;
|
||||
aftercall22:
|
||||
afterif7:
|
||||
afterlambda4:
|
||||
val = define_variable("fib", val, env);
|
||||
proc = lookup_variable_value("fac", env);
|
||||
val = const_i32(10);
|
||||
argl = cons(val, NULL);
|
||||
if (primitive_procedure(proc) == 1)
|
||||
goto primitivebranch3;
|
||||
goto compiledbranch2;
|
||||
compiledbranch2:
|
||||
cont = &&aftercall1;
|
||||
continu = &&aftercall1;
|
||||
entry = compiled_procedure_entry(proc);
|
||||
goto *entry;
|
||||
primitivebranch3:
|
||||
val = (*proc->primitive_procedure)((void**) argl);
|
||||
val = (*proc->primitive_procedure)(argl);
|
||||
aftercall1:
|
||||
printf("%u\n", val->value);
|
||||
print_datum(val);
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
|
|
|
@ -1,9 +1,26 @@
|
|||
aout: main.o
|
||||
cc -o aout main.o
|
||||
CC=gcc -Wall
|
||||
|
||||
main.o : main.c datum.h
|
||||
cc -c main.c
|
||||
aout: main.o datum.o env.o primitives.o stack.o
|
||||
$(CC) -o aout main.o datum.o env.o primitives.o stack.o
|
||||
|
||||
main.c: ../../ex-5_50-52.scm translator.scm
|
||||
cd ../../ && ./run ex-5_50-52.scm
|
||||
|
||||
main.o: main.c datum.h env.h
|
||||
$(CC) -c main.c
|
||||
|
||||
datum.o: datum.c datum.h
|
||||
$(CC) -c datum.c
|
||||
|
||||
env.o: env.c env.h datum.h
|
||||
$(CC) -c env.c
|
||||
|
||||
primitives.o: primitives.c primitives.h datum.h
|
||||
$(CC) -c primitives.c
|
||||
|
||||
stack.o: stack.c stack.h datum.h
|
||||
$(CC) -c stack.c
|
||||
|
||||
clean :
|
||||
rm aout main.o
|
||||
rm aout main.o datum.o env.o primitives.o stack.o
|
||||
|
||||
|
|
|
@ -0,0 +1,99 @@
|
|||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "primitives.h"
|
||||
|
||||
datum* add(datum* args) {
|
||||
int32_t result = 0;
|
||||
while (args) {
|
||||
if (args->type != datum_type_i32) {
|
||||
printf("ADD - invalid type\n");
|
||||
exit(-1);
|
||||
}
|
||||
result += args->value;
|
||||
args = args->next;
|
||||
}
|
||||
return const_i32(result);
|
||||
}
|
||||
|
||||
datum* sub(datum* args) {
|
||||
int32_t result;
|
||||
|
||||
if (args) {
|
||||
result = args->value;
|
||||
} else {
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
if (!args->next) {
|
||||
result = -result;
|
||||
} else {
|
||||
args = args->next;
|
||||
while (args) {
|
||||
if (args->type != datum_type_i32) {
|
||||
printf("SUB - invalid type\n");
|
||||
exit(-1);
|
||||
}
|
||||
result -= args->value;
|
||||
args = args->next;
|
||||
}
|
||||
}
|
||||
|
||||
return const_i32(result);
|
||||
}
|
||||
|
||||
datum* mul(datum* args) {
|
||||
int32_t result = 1;
|
||||
|
||||
while (args) {
|
||||
if (args->type != datum_type_i32) {
|
||||
printf("MUL - invalid type\n");
|
||||
exit(-1);
|
||||
}
|
||||
result *= args->value;
|
||||
args = args->next;
|
||||
}
|
||||
|
||||
return const_i32(result);
|
||||
}
|
||||
|
||||
datum* eq(datum* args) {
|
||||
if (!args->next) {
|
||||
return const_bool(1);
|
||||
}
|
||||
|
||||
datum *first = args;
|
||||
while (first->next) {
|
||||
if (!datum_eq(first, first->next))
|
||||
return const_bool(0);
|
||||
first = first->next;
|
||||
}
|
||||
|
||||
return const_bool(1);
|
||||
}
|
||||
|
||||
datum* lt(datum* args) {
|
||||
if (!args->next) {
|
||||
return const_bool(1);
|
||||
}
|
||||
|
||||
datum *first = args;
|
||||
while (first->next) {
|
||||
if (!datum_lt(first, first->next))
|
||||
return const_bool(0);
|
||||
first = first->next;
|
||||
}
|
||||
|
||||
return const_bool(1);
|
||||
}
|
||||
|
||||
datum* display(datum* args) {
|
||||
print_datum(args);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
datum* newline(datum* args) {
|
||||
printf("\n");
|
||||
return NULL;
|
||||
}
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
#ifndef PRIMITIVES_H
|
||||
#define PRIMITIVES_H
|
||||
|
||||
#include "datum.h"
|
||||
|
||||
datum* add(datum* args);
|
||||
datum* sub(datum* args);
|
||||
datum* mul(datum* args);
|
||||
datum* eq(datum* args);
|
||||
datum* lt(datum* args);
|
||||
datum* display(datum* args);
|
||||
datum* newline(datum* args);
|
||||
|
||||
#endif
|
|
@ -0,0 +1,41 @@
|
|||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "stack.h"
|
||||
|
||||
struct stack proc_stack;
|
||||
|
||||
stack* create_stack(void) {
|
||||
stack* s = malloc(sizeof(stack));
|
||||
if (!s) exit(-1);
|
||||
s->first = NULL;
|
||||
return s;
|
||||
}
|
||||
|
||||
void save(void *d, stack *s) {
|
||||
stack_elem* elem = malloc(sizeof(stack_elem));
|
||||
elem->value = d;
|
||||
|
||||
if (!s->first) {
|
||||
elem->next = NULL;
|
||||
} else {
|
||||
elem->next = s->first;
|
||||
}
|
||||
s->first = elem;
|
||||
}
|
||||
|
||||
void* restore(stack *s) {
|
||||
void *r;
|
||||
stack_elem *se;
|
||||
|
||||
if (!s->first) {
|
||||
printf("stack empty!\n");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
se = s->first;
|
||||
r = s->first->value;
|
||||
s->first = se->next;
|
||||
free(se);
|
||||
return r;
|
||||
}
|
|
@ -0,0 +1,18 @@
|
|||
#ifndef STACK_H
|
||||
#define STACK_H
|
||||
|
||||
typedef struct stack_elem {
|
||||
void *value;
|
||||
struct stack_elem *next;
|
||||
} stack_elem;
|
||||
|
||||
typedef struct stack {
|
||||
struct stack_elem *first;
|
||||
} stack;
|
||||
|
||||
stack* create_stack(void);
|
||||
void save(void *d, stack *s);
|
||||
void* restore(stack *s);
|
||||
|
||||
#endif
|
||||
|
|
@ -57,16 +57,16 @@
|
|||
|
||||
(define (compile-linkage linkage)
|
||||
(cond ((eq? linkage 'return)
|
||||
(make-instruction-sequence '(continue) '()
|
||||
'((goto (reg continue)))))
|
||||
(make-instruction-sequence '(continu) '()
|
||||
'((" goto *continu;"))))
|
||||
((eq? linkage 'next)
|
||||
(empty-instruction-sequence))
|
||||
(else
|
||||
(make-instruction-sequence '() '()
|
||||
`((goto (label ,linkage)))))))
|
||||
`((" goto " ,linkage ";"))))))
|
||||
|
||||
(define (end-with-linkage linkage instruction-sequence)
|
||||
(preserving '(continue)
|
||||
(preserving '(continu)
|
||||
instruction-sequence
|
||||
(compile-linkage linkage)))
|
||||
|
||||
|
@ -77,7 +77,7 @@
|
|||
(cond ((number? exp)
|
||||
(end-with-linkage linkage
|
||||
(make-instruction-sequence '() (list target)
|
||||
`((" " ,target " = const_int(" ,exp ");")))))
|
||||
`((" " ,target " = const_i32(" ,exp ");")))))
|
||||
(else (error "SELF-EVAL -- unsupported type" exp))))
|
||||
|
||||
(define (compile-quoted exp target linkage)
|
||||
|
@ -114,11 +114,8 @@
|
|||
(preserving '(env)
|
||||
get-value-code
|
||||
(make-instruction-sequence '(env val) (list target)
|
||||
`((perform (op define-variable!)
|
||||
(const ,var)
|
||||
(reg val)
|
||||
(reg env))
|
||||
(assign ,target (const ok))))))))
|
||||
`((" " ,target " = define_variable(\"" ,var "\", val, env);")
|
||||
))))))
|
||||
|
||||
|
||||
;;;conditional expressions
|
||||
|
@ -137,9 +134,9 @@
|
|||
;; end of footnote
|
||||
|
||||
(define (compile-if exp target linkage)
|
||||
(let ((t-branch (make-label 'true-branch))
|
||||
(f-branch (make-label 'false-branch))
|
||||
(after-if (make-label 'after-if)))
|
||||
(let ((t-branch (make-label 'truebranch))
|
||||
(f-branch (make-label 'falsebranch))
|
||||
(after-if (make-label 'afterif)))
|
||||
(let ((consequent-linkage
|
||||
(if (eq? linkage 'next) after-if linkage)))
|
||||
(let ((p-code (compile (if-predicate exp) 'val 'next))
|
||||
|
@ -148,23 +145,30 @@
|
|||
(if-consequent exp) target consequent-linkage))
|
||||
(a-code
|
||||
(compile (if-alternative exp) target linkage)))
|
||||
(preserving '(env continue)
|
||||
(preserving '(env continu)
|
||||
p-code
|
||||
(append-instruction-sequences
|
||||
(make-instruction-sequence '(val) '()
|
||||
`((test (op false?) (reg val))
|
||||
(branch (label ,f-branch))))
|
||||
`((" if(is_false(val))")
|
||||
(" goto " ,f-branch ";")
|
||||
(" goto " ,t-branch ";")
|
||||
))
|
||||
(parallel-instruction-sequences
|
||||
(append-instruction-sequences t-branch c-code)
|
||||
(append-instruction-sequences f-branch a-code))
|
||||
after-if))))))
|
||||
(append-instruction-sequences
|
||||
(make-instruction-sequence '() '() `((,t-branch ":")))
|
||||
c-code)
|
||||
(append-instruction-sequences
|
||||
(make-instruction-sequence '() '() `((,f-branch ":")))
|
||||
a-code))
|
||||
(make-instruction-sequence '() '() `((,after-if ":")))
|
||||
))))))
|
||||
|
||||
;;; sequences
|
||||
|
||||
(define (compile-sequence seq target linkage)
|
||||
(if (last-exp? seq)
|
||||
(compile (first-exp seq) target linkage)
|
||||
(preserving '(env continue)
|
||||
(preserving '(env continu)
|
||||
(compile (first-exp seq) target 'next)
|
||||
(compile-sequence (rest-exps seq) target linkage))))
|
||||
|
||||
|
@ -172,31 +176,39 @@
|
|||
|
||||
(define (compile-lambda exp target linkage)
|
||||
(let ((proc-entry (make-label 'entry))
|
||||
(after-lambda (make-label 'after-lambda)))
|
||||
(after-lambda (make-label 'afterlambda)))
|
||||
(let ((lambda-linkage
|
||||
(if (eq? linkage 'next) after-lambda linkage)))
|
||||
(append-instruction-sequences
|
||||
(tack-on-instruction-sequence
|
||||
(end-with-linkage lambda-linkage
|
||||
(make-instruction-sequence '(env) (list target)
|
||||
`((assign ,target
|
||||
(op make-compiled-procedure)
|
||||
(label ,proc-entry)
|
||||
(reg env)))))
|
||||
`((" " ,target " = make_compiled_proc(&&" ,proc-entry ", env);"))))
|
||||
(compile-lambda-body exp proc-entry))
|
||||
after-lambda))))
|
||||
(make-instruction-sequence '() '() `((,after-lambda ":")))))))
|
||||
|
||||
(define (compile-lambda-body exp proc-entry)
|
||||
(let ((formals (lambda-parameters exp)))
|
||||
(define (formals-to-string formals)
|
||||
(if (null? formals)
|
||||
""
|
||||
(string-append
|
||||
"\""
|
||||
(string-append
|
||||
(symbol->string (car formals))
|
||||
(string-append
|
||||
"\", "
|
||||
(formals-to-string (cdr formals)))))))
|
||||
(let ((formals (lambda-parameters exp))
|
||||
(argv (make-label 'argv)))
|
||||
(append-instruction-sequences
|
||||
(make-instruction-sequence '(env proc argl) '(env)
|
||||
`(,proc-entry
|
||||
(assign env (op compiled-procedure-env) (reg proc))
|
||||
(assign env
|
||||
(op extend-environment)
|
||||
(const ,formals)
|
||||
(reg argl)
|
||||
(reg env))))
|
||||
`(
|
||||
(,proc-entry ":")
|
||||
(" env = proc->env;")
|
||||
(" const char *" ,argv "[] = {" ,(formals-to-string formals) "};")
|
||||
(" env = extend_environment(" ,argv ", argl, env);")
|
||||
))
|
||||
;(" env = extend_environment(" (const ,formals) ", argl, env);")))
|
||||
(compile-sequence (lambda-body exp) 'val 'return))))
|
||||
|
||||
|
||||
|
@ -209,9 +221,9 @@
|
|||
(operand-codes
|
||||
(map (lambda (operand) (compile operand 'val 'next))
|
||||
(operands exp))))
|
||||
(preserving '(env continue)
|
||||
(preserving '(env continu)
|
||||
proc-code
|
||||
(preserving '(proc continue)
|
||||
(preserving '(proc continu)
|
||||
(construct-arglist operand-codes)
|
||||
(compile-procedure-call target linkage)))))
|
||||
|
||||
|
@ -219,34 +231,30 @@
|
|||
(let ((operand-codes (reverse operand-codes)))
|
||||
(if (null? operand-codes)
|
||||
(make-instruction-sequence '() '(argl)
|
||||
'((assign argl (const ()))))
|
||||
'((" argl = NULL;")))
|
||||
(let ((code-to-get-last-arg
|
||||
(append-instruction-sequences
|
||||
(car operand-codes)
|
||||
(make-instruction-sequence '(val) '(argl)
|
||||
'((" argl[0] = val;"))))))
|
||||
'((" argl = cons(val, NULL);"))))))
|
||||
(if (null? (cdr operand-codes))
|
||||
code-to-get-last-arg
|
||||
(preserving '(env)
|
||||
code-to-get-last-arg
|
||||
(code-to-get-rest-args
|
||||
1
|
||||
(cdr operand-codes))))))))
|
||||
|
||||
(define (code-to-get-rest-args index operand-codes)
|
||||
(define (code-to-get-rest-args operand-codes)
|
||||
(let ((code-for-next-arg
|
||||
(preserving '(argl)
|
||||
(car operand-codes)
|
||||
(make-instruction-sequence '(val argl) '(argl)
|
||||
`((" argl[" ,index "] = val;"))))))
|
||||
`((" argl = cons(val, argl);"))))))
|
||||
(if (null? (cdr operand-codes))
|
||||
(append-instruction-sequences
|
||||
code-for-next-arg
|
||||
(make-instruction-sequence
|
||||
'() '() `((" argl[" ,(+ index 1) "] = NULL;"))))
|
||||
code-for-next-arg
|
||||
(preserving '(env)
|
||||
code-for-next-arg
|
||||
(code-to-get-rest-args (+ index 1) (cdr operand-codes))))))
|
||||
(code-to-get-rest-args (cdr operand-codes))))))
|
||||
|
||||
;;;applying procedures
|
||||
|
||||
|
@ -259,7 +267,8 @@
|
|||
(append-instruction-sequences
|
||||
(make-instruction-sequence '(proc) '()
|
||||
`((" if (" primitive_procedure "(proc) == 1)")
|
||||
(" goto " ,primitive-branch ";")))
|
||||
(" goto " ,primitive-branch ";")
|
||||
(" goto " ,compiled-branch ";")))
|
||||
(parallel-instruction-sequences
|
||||
(append-instruction-sequences
|
||||
(make-instruction-sequence '() '() `((,compiled-branch ":")))
|
||||
|
@ -269,7 +278,7 @@
|
|||
(end-with-linkage linkage
|
||||
(make-instruction-sequence '(proc argl)
|
||||
(list target)
|
||||
`((" val = (*proc->primitive_procedure)((void**) argl);"))))))
|
||||
`((" val = (*proc->primitive_procedure)(argl);"))))))
|
||||
(make-instruction-sequence '() '() `((,after-call ":")))))))
|
||||
|
||||
;;;applying compiled procedures
|
||||
|
@ -277,31 +286,31 @@
|
|||
(define (compile-proc-appl target linkage)
|
||||
(cond ((and (eq? target 'val) (not (eq? linkage 'return)))
|
||||
(make-instruction-sequence '(proc) all-regs
|
||||
`((" " cont " = &&" ,linkage ";")
|
||||
`((" continu = &&" ,linkage ";")
|
||||
(" " entry " = " compiled_procedure_entry "(proc);")
|
||||
(" goto *entry;"))))
|
||||
((and (not (eq? target 'val))
|
||||
(not (eq? linkage 'return)))
|
||||
(let ((proc-return (make-label 'proc-return)))
|
||||
(make-instruction-sequence '(proc) all-regs
|
||||
`((assign continue (label ,proc-return))
|
||||
`((assign continu (label ,proc-return))
|
||||
(assign val (op compiled_procedure_entry)
|
||||
(reg proc))
|
||||
(goto (reg val))
|
||||
(" goto " (reg val) "// FOO2")
|
||||
,proc-return
|
||||
(assign ,target (reg val))
|
||||
(goto (label ,linkage))))))
|
||||
(" goto " (label ,linkage) "; // FOO1")))))
|
||||
((and (eq? target 'val) (eq? linkage 'return))
|
||||
(make-instruction-sequence '(proc continue) all-regs
|
||||
'((assign val (op compiled-procedure-entry)
|
||||
(reg proc))
|
||||
(goto (reg val)))))
|
||||
(make-instruction-sequence '(proc continu) all-regs
|
||||
'((" entry = compiled_procedure_entry(proc);")
|
||||
(" goto *entry;")
|
||||
)))
|
||||
((and (not (eq? target 'val)) (eq? linkage 'return))
|
||||
(error "return linkage, target not val -- COMPILE"
|
||||
target))))
|
||||
|
||||
;; footnote
|
||||
(define all-regs '(env proc val argl continue))
|
||||
(define all-regs '(env proc val argl continu))
|
||||
|
||||
|
||||
;;;SECTION 5.5.4
|
||||
|
@ -361,9 +370,9 @@
|
|||
(registers-needed seq1))
|
||||
(list-difference (registers-modified seq1)
|
||||
(list first-reg))
|
||||
(append `((save ,first-reg))
|
||||
(append `((" save(",first-reg ", " ,first-reg "_stack);"))
|
||||
(statements seq1)
|
||||
`((restore ,first-reg))))
|
||||
`((" " ,first-reg " = restore(" ,first-reg "_stack);"))))
|
||||
seq2)
|
||||
(preserving (cdr regs) seq1 seq2)))))
|
||||
|
||||
|
|
Loading…
Reference in New Issue