scsh-0.5/scsh/static1.scm

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;;; Package for Static heaps for the Scheme Shell
;;; Copyright (c) 1995 by Brian D. Carlstrom. See file COPYING.
;;; based on Scheme48 implementation.
;;; Copyright (c) 1993, 1994 by Richard Kelsey and Jonathan Rees.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; prefix for temp files - in their own dir
(define *temp-dir* "/tmp")
(define (test)
(scsh-do-it *scsh-image* *temp-dir* *image-lib* "gcc -c" "ar cq"))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define-record heap
(length 0)
(objects '())
)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define (scsh-do-it infile tempdir outfile cc-command ar-command)
(let* ((temp-dir (format #f "~a/scsh~s" tempdir (pid)))
(prefix (string-append temp-dir "/static"))
(start (read-heap-image infile)))
(receive (pure impure reloc externs)
(create-heaps-and-tables)
(if (file-exists? temp-dir)
(if (file-directory? temp-dir)
(with-cwd temp-dir
(map delete-file (directory-files temp-dir #t)))
(delete-file temp-dir)))
(create-directory temp-dir #o755 #t)
(with-cwd temp-dir
(write-c-header-file pure impure externs infile outfile prefix)
(write-c-image pure impure reloc externs prefix)
(write-main-c-file start reloc prefix)
(compile-c-files cc-command prefix))
(archive-files ar-command outfile prefix)
)))
(define debug #f)
(define (vm-string->string x)
(cond ((vm-string? x)
(let ((len (vm-string-length x)))
(let loop ((i 0)
(l '()))
(cond ((= i len)
(list->string (reverse l)))
(else
(loop (+ i 1) (cons (vm-string-ref x i) l)))))))
(else
(message x " is not a vm-string"))))
(define (read-heap-image infile)
(let ((bytes (file-info:size (file-info infile))))
(init (inexact->exact (floor (* 1.1 bytes))) infile)))
; XXX need little extra space for find-all-xs
(define (create-heaps-and-tables)
(let* ((n (nchunks))
( pure (make-vector n))
(impure (make-vector n))
(reloc (make-vector n))
(externs (make-table )))
;; initialize to blanks
(let loop ((i 0))
(cond ((not (= i n))
(vector-set! pure i (make-heap ))
(vector-set! impure i (make-heap ))
(vector-set! reloc i (make-table))
(loop (+ i 1)))))
(scsh-for-each-stored-object
(lambda (chunk)
(format #t "Reading chunk number ~s" chunk))
(lambda (chunk x len)
(if debug
(write x))
(let* ((mutable (mutable? x))
(heap (vector-ref (if mutable impure pure) chunk)))
(table-set! (vector-ref reloc chunk) x (heap:length heap))
(set-heap:objects heap (cons x (heap:objects heap)))
(set-heap:length heap (+ len (heap:length heap)))
(cond (debug
(display (if mutable " mutable " " immutable "))
(cond ((d-vector? x) (display " d-vector"))
((vm-string? x) (display "vm-string"))
(else (display " b-vector")))
(let ((m (heap:length (vector-ref impure chunk)))
(i (heap:length (vector-ref pure chunk))))
(message " m" m "+i" i "=" (+ m i))))))
(if (= (header-type (stob-header x)) (enum stob external))
(table-set! externs
(external-value x)
(vm-string->string (external-name x))))
)
(lambda (chunk)
(newline)))
(let loop ((i 0))
(cond ((not (= i n))
(let ((p (vector-ref pure i))
(i (vector-ref impure i)))
(set-heap:objects p (reverse (heap:objects p)))
(set-heap:objects i (reverse (heap:objects i))))
(loop (+ i 1)))))
(values pure impure reloc externs)))
(define (write-c-header-file pure impure externs infile outfile prefix)
(message "Writing header file")
(call-with-output-file (string-append prefix ".h")
(lambda (port)
(format port "/* Static Heap File Automatically Generated~%")
(format port " * by scsh/static.scm~%")
(format port " * from ~a~%" infile)
(format port " * to ~a~%" outfile)
(format port " */~%")
(let ((n (nchunks)))
(do ((i 0 (+ i 1)))
((= i n))
(format port "extern const long p~s[~s];~%" i
(quotient (heap:length (vector-ref pure i)) 4)))
(do ((i 0 (+ i 1)))
((= i n))
(format port "extern long i~s[~s];~%" i
(quotient (heap:length (vector-ref impure i)) 4))))
(table-walk
(lambda (address name)
(format port "const extern ~a();~%" name))
externs)
)))
(define (d-vector-for-each proc d-vector)
(do ((i 0 (+ i 1)))
((>= i (d-vector-length d-vector)))
(proc (d-vector-ref d-vector i))))
(define (write-c-image pure impure reloc externs prefix)
(message "Writing pure c files")
(scsh-write-c-image pure "p" "const " reloc externs prefix)
(message "Writing impure c files")
(scsh-write-c-image impure "i" "" reloc externs prefix))
(define (scsh-write-c-image heap name const reloc externs prefix)
(let ((n (nchunks)))
(let chunk-loop ((c 0))
(cond ((not (= c n))
(format #t "Writing ~a-~a~s.c~%" prefix name c)
(call-with-output-file
(format #f "~a-~a~s.c" prefix name c)
(lambda (port)
(format port "#include \"~a.h\"~%" prefix)
(format port "~a long ~a~s[]={~%" const name c)
(let ((heap (vector-ref heap c)))
(let heap-loop ((l (heap:objects heap)))
(cond ((not (null? l))
(scsh-emit-initializer (car l) reloc externs port)
(heap-loop (cdr l))))))
(display "};" port)
(newline port)))
(chunk-loop (+ 1 c)))))))
(define (write-main-c-file start reloc prefix)
(let ((n (nchunks)))
(call-with-output-file (string-append prefix ".c")
(lambda (port)
(format port "#include \"~a.h\"~%" prefix)
(format port "const long p_count = ~s;~%" n)
(format port "const long i_count = ~s;~%" n)
(format port "const long * const p_areas[~s] = {" n)
(do ((i 0 (+ i 1)))
((= i n))
(format port "(const long *) &p~s, " i))
(format port "};~%")
(format port "long * const i_areas[~s] = {" n)
(do ((i 0 (+ i 1)))
((= i n))
(format port "(long *) &i~s, " i))
(format port "};~%")
(format port "const long p_sizes[~s] = {" n)
(do ((i 0 (+ i 1)))
((= i n))
(format port "sizeof(p~s), " i))
(format port "};~%")
(format port "const long i_sizes[~s] = {" n)
(do ((i 0 (+ i 1)))
((= i n))
(format port "sizeof(i~s), " i))
(format port "};~%")
(display "const long entry = " port)
(scsh-emit-descriptor start reloc port)
(write-char #\; port)
(newline port)))))
(define (compile-c-files cc-command prefix)
(let ((n (nchunks))
(cc (line->list cc-command)))
(message "Compiling main C file")
(run (,@(append cc (list (format #f "~a.c" prefix)))))
(do ((i 0 (+ i 1)))
((= i n))
(message "Compiling C file for pure chunk " i)
(run (,@(append cc
(list (format #f "~a-p~s.c" prefix i)))))
(message "Compiling C file for impure chunk " i)
(run (,@(append cc
(list (format #f "~a-i~s.c" prefix i))))))))
(define (archive-files ar-command outfile prefix)
(let ((n (nchunks))
(ar (line->list ar-command)))
(message "Archiving object files")
(run (,@(append
ar
(cons
outfile
(let loop ((i 0)
(l '()))
(cond ((not (= i n))
(loop (+ i 1)
(cons
(format #f "~a-i~s.o" prefix i)
(cons
(format #f "~a-p~s.o" prefix i)
l))))
(else
(reverse
(cons
(string-append prefix ".o")
l)))))))))))
(define (scsh-emit-initializer x reloc externs port)
(write-hex port (stob-header x))
(cond ((d-vector? x)
(scsh-emit-d-vector-initializer x reloc port))
((vm-string? x)
(scsh-emit-vm-string-initializer x port))
(else
(scsh-emit-b-vector-initializer x reloc externs port)))
(if *comments?*
(begin (display " /* " port)
(writex x port)
(display " */" port)))
(newline port))
(define (scsh-emit-d-vector-initializer x reloc port)
(let ((len (d-vector-length x)))
(do ((i 0 (+ i 1)))
((= i len))
(scsh-emit-descriptor (d-vector-ref x i) reloc port)
(write-char #\, port))))
(define (scsh-emit-vm-string-initializer x port)
(let* ((len (vm-string-length x)) ; end is jawilson style hack
(end (- (cells->bytes (bytes->cells (+ len 1))) 4)))
(do ((i 0 (+ i 4)))
((= i end)
(case (- len end)
((0)
(write-hex port 0))
((1)
(write-hex
port
(net-to-host-32 (arithmetic-shift
(char->ascii (vm-string-ref x i)) 24))))
((2)
(write-hex
port
(net-to-host-32
(bitwise-ior
(arithmetic-shift
(char->ascii (vm-string-ref x i)) 24)
(arithmetic-shift
(char->ascii (vm-string-ref x (+ i 1))) 16)))))
((3)
(write-hex
port
(net-to-host-32
(bitwise-ior
(bitwise-ior
(arithmetic-shift
(char->ascii (vm-string-ref x i)) 24)
(arithmetic-shift
(char->ascii (vm-string-ref x (+ i 1))) 16))
(arithmetic-shift
(char->ascii (vm-string-ref x (+ i 2))) 8)))))))
(write-hex port
(net-to-host-32 (bitwise-ior
(bitwise-ior
(arithmetic-shift
(char->ascii (vm-string-ref x i)) 24)
(arithmetic-shift
(char->ascii (vm-string-ref x (+ i 1))) 16))
(bitwise-ior
(arithmetic-shift
(char->ascii (vm-string-ref x (+ i 2))) 8)
(char->ascii (vm-string-ref x (+ i 3))))))
))))
(define (scsh-emit-b-vector-initializer x reloc externs port)
(cond ((and (code-vector? x)
(table-ref externs x)) =>
(lambda (name)
(format port "(long) *~a," name)))
(else
(let* ((len (b-vector-length x)) ;end is jawilson style hack
(end (- (cells->bytes (bytes->cells (+ len 1))) 4)))
(do ((i 0 (+ i 4)))
((= i end)
(case (- len end)
((1)
(write-hex
port
(net-to-host-32 (arithmetic-shift (b-vector-ref x i) 24))))
((2)
(write-hex
port
(net-to-host-32
(bitwise-ior
(arithmetic-shift (b-vector-ref x i) 24)
(arithmetic-shift (b-vector-ref x (+ i 1)) 16)))))
((3)
(write-hex
port
(net-to-host-32
(bitwise-ior
(bitwise-ior
(arithmetic-shift (b-vector-ref x i) 24)
(arithmetic-shift (b-vector-ref x (+ i 1)) 16))
(arithmetic-shift (b-vector-ref x (+ i 2)) 8)))
))))
(write-hex
port
(net-to-host-32 (bitwise-ior
(bitwise-ior
(arithmetic-shift (b-vector-ref x i) 24)
(arithmetic-shift (b-vector-ref x (+ i 1)) 16))
(bitwise-ior
(arithmetic-shift (b-vector-ref x (+ i 2)) 8)
(b-vector-ref x (+ i 3))))))))
)))
(define (scsh-emit-descriptor x reloc port)
(if (stob? x)
(let ((n (chunk-number x)))
(display "(long)(&" port)
(if (immutable? x)
(display "p" port)
(display "i" port))
(display n port)
(display "[" port)
(display (quotient (table-ref (vector-ref reloc n) x) 4) port)
(display "])+7" port))
(format port
(if (negative? x) "-0x~a" "0x~a")
(number->string (abs x) 16))))
(define (scsh-for-each-stored-object chunk-start proc chunk-end)
(let ((limit (heap-pointer)))
(let chunk-loop ((addr (newspace-begin))
(i 0)
(chunk (+ (newspace-begin) *chunk-size*)))
(if (addr< addr limit)
(begin (chunk-start i)
(let loop ((addr addr))
(if (and (addr< addr limit)
(addr< addr chunk))
(let* ((d (fetch addr))
(len (addr1+ (header-a-units d))))
(if (not (header? d))
(warn "heap is in an inconsistent state" d))
(proc i (address->stob-descriptor (addr1+ addr)) len)
(loop (addr+ addr len)))
(begin (chunk-end i)
(chunk-loop addr
(+ i 1)
(+ chunk *chunk-size*))))))))))
(define (write-hex port x)
(format port
(if (negative? x) "-0x~a," "0x~a,")
(number->string (abs x) 16)))
;; takes a string and break it into a list at whitespace
;; rewrite using scsh stuff?
(define (line->list line)
(let ((len (string-length line)))
(let loop ((start 0)
(end 0)
(l '()))
(cond ((>= end len)
(if (= start end)
l
(append l (list (substring line start end)))))
((and (= start end)
(or (char=? (string-ref line start) (ascii->char 32))
(char=? (string-ref line start) (ascii->char 9))))
(loop (+ 1 start)
(+ 1 end)
l))
((or (char=? (string-ref line end) (ascii->char 32))
(char=? (string-ref line end) (ascii->char 9)))
(loop (+ 1 end)
(+ 1 end)
(append l (list (substring line start end)))))
((< end len)
(loop start
(+ 1 end)
l))
(else (error "unexpected case in line->list"))))))
;;;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
;;; Debugging
;;;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
(define (bin n)
(number->string n 2))
(define (oct n)
(number->string n 8))
(define (dec n)
(number->string n 10))
(define (hex n)
(number->string n 16))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; For example:
; (do-it 100000 "~/s48/debug/little.image" "little-heap.c")
;
; The first argument to do-it should be somewhat larger than the size,
; in bytes, of the image file to be converted (which you can obtain with
; "ls -l").
;
; If the image contains 0-length stored objects, then the .c file will
; have to be compiled by gcc, since 0-length arrays aren't allowed in
; ANSI C. This wouldn't be difficult to work around.
(define *comments?* #f)
; 800,000 bytes => 200,000 words => at least 100,000 objects
; 50 chunks => 16,000 bytes per chunk => 2,000 objects per chunk
(define *chunk-size* 10000)
(define (do-it bytes infile outfile)
(let ((start (init bytes infile)))
(call-with-output-file outfile
(lambda (port)
(format port "#define D(x) (long)(&x)+7~%")
(format port "#define H unsigned long~%")
(emit-area-declarations "p" immutable? "const " port)
(emit-area-declarations "i" mutable? "" port)
(emit-area-initializers "p" immutable? "const " port)
(emit-area-initializers "i" mutable? "" port)
(display "const long entry = " port)
(emit-descriptor start port)
(write-char #\; port)
(newline port)))))
(define (init bytes infile)
(create-memory (quotient bytes 2) quiescent) ;Output of ls -l
(initialize-heap (memory-begin) (memory-size))
(let ((start (read-image infile 0)))
(message (nchunks)
" chunks")
start))
(define (nchunks) (+ (chunk-number (heap-pointer)) 1))
; emit struct declarations for areas
(define (emit-area-declarations name in-area? const port)
(for-each-stored-object
(lambda (chunk)
(message name chunk " declaration")
(display "struct " port) (display name port) (display chunk port)
(display " {" port) (newline port))
(lambda (x)
(if (in-area? x)
(emit-declaration x port)))
(lambda (chunk)
(display "};" port)
(newline port)
(display const port)
(display "extern struct " port) (display name port) (display chunk port)
(write-char #\space port) (display name port) (display chunk port)
(write-char #\; port) (newline port)
chunk)))
(define (emit-declaration x port)
(display " H x" port)
(writex x port)
(cond ((d-vector? x)
(display "; long d" port)
(writex x port)
(write-char #\[ port)
(write (d-vector-length x) port))
((vm-string? x)
(display "; char d" port)
(writex x port)
(write-char #\[ port)
;; Ensure alignment (thanks Ian)
(write (cells->bytes (bytes->cells (b-vector-length x)))
port))
(else
(display "; unsigned char d" port)
(writex x port)
(write-char #\[ port)
;; Ensure alignment
(write (cells->bytes (bytes->cells (b-vector-length x)))
port)))
(display "];" port)
(if *comments?*
(begin (display " /* " port)
(display (enumerand->name (stob-type x) stob) port)
(display " */" port)))
(newline port))
; Emit initializers for areas
(define (emit-area-initializers name in-area? const port)
(for-each-stored-object
(lambda (chunk)
(message name chunk " initializer")
(display const port)
(display "struct " port) (display name port) (write chunk port)
(write-char #\space port) (display name port) (write chunk port)
(display " =" port) (newline port)
(write-char #\{ port) (newline port))
(lambda (x)
(if (in-area? x)
(emit-initializer x port)))
(lambda (chunk)
(display "};" port) (newline port)))
(let ((n (nchunks)))
(format port "const long ~a_count = ~s;~%" name n)
(format port "~a long * const ~a_areas[~s] = {" const name n)
(do ((i 0 (+ i 1)))
((= i n))
(format port "(~a long *)&~a~s, " const name i))
(format port "};~%const long ~a_sizes[~s] = {" name n)
(do ((i 0 (+ i 1)))
((= i n))
(format port "sizeof(~a~s), " name i))
(format port "};~%")))
(define (message . stuff)
(for-each display stuff) (newline))
(define (emit-initializer x port)
(display " " port)
(write (stob-header x) port)
(write-char #\, port)
(cond ((d-vector? x)
(emit-d-vector-initializer x port))
((vm-string? x)
(write-char #\" port)
(let ((len (vm-string-length x)))
(do ((i 0 (+ i 1)))
((= i len) (write-char #\" port))
(let ((c (vm-string-ref x i)))
(cond ((or (char=? c #\") (char=? c #\\))
(write-char #\\ port))
((char=? c #\newline)
(display "\\n\\" port)))
(write-char c port)))))
(else
(write-char #\{ port)
(let ((len (b-vector-length x)))
(do ((i 0 (+ i 1)))
((= i len) (write-char #\} port))
(write (b-vector-ref x i) port)
(write-char #\, port)))))
(write-char #\, port)
(if *comments?*
(begin (display " /* " port)
(writex x port)
(display " */" port)))
(newline port))
(define (emit-d-vector-initializer x port)
(write-char #\{ port)
(let ((len (d-vector-length x)))
(do ((i 0 (+ i 1)))
((= i len) (write-char #\} port))
(emit-descriptor (d-vector-ref x i) port)
(write-char #\, port))))
(define (emit-descriptor x port)
(if (stob? x)
(begin (if (immutable? x)
(display "D(p" port)
(display "D(i" port))
(display (chunk-number x) port)
(display ".x" port)
(writex x port)
(write-char #\) port))
(write x port)))
; Foo
(define (writex x port)
(write (quotient (- (- x (memory-begin)) 7) 4) port))
(define (chunk-number x)
(quotient (- (- x (memory-begin)) 7) *chunk-size*))
; Image traversal utility
(define (for-each-stored-object chunk-start proc chunk-end)
(let ((limit (heap-pointer)))
(let chunk-loop ((addr (newspace-begin))
(i 0)
(chunk (+ (newspace-begin) *chunk-size*)))
(if (addr< addr limit)
(begin (chunk-start i)
(let loop ((addr addr))
(if (and (addr< addr limit)
(addr< addr chunk))
(let ((d (fetch addr)))
(if (not (header? d))
(warn "heap is in an inconsistent state" d))
(proc (address->stob-descriptor (addr1+ addr)))
(loop (addr1+ (addr+ addr (header-a-units d)))))
(begin (chunk-end i)
(chunk-loop addr
(+ i 1)
(+ chunk *chunk-size*))))))))))
(define (mutable? x) (not (immutable? x)))