the pre scsh static linker

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bdc 1996-08-24 02:00:47 +00:00
parent 1df0338fb0
commit 3b0a2e2fa5
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;;; Static heaps for the Scheme Shell
;;; Copyright (c) 1994 by Brian D. Carlstrom.
;;; based on Scheme48 implementation.
;;; Copyright (c) 1993, 1994 by Richard Kelsey and Jonathan Rees.
;;; TODO
;;; get it working
#!
,config ,load vm/ps-interface.scm
,config ,load vm/interfaces.scm
,config ,load vm/package-defs.scm
;; Undefined: (pre-scheme vm-utilities system-spec external)
,config ,load vm/s48-package-defs.scm
,load-package bigbit
,load-package destructuring
,load-package heap
,in heap
(define (newspace-begin) *newspace-begin*)
(define (heap-pointer) *hp*)
,structure heap-extra (export newspace-begin
heap-pointer
header-a-units
d-vector?
stob-type)
,config
(define-structure static (export do-it
make-static-heap
test)
(open scheme heap memory data stob struct
heap-extra
vm-architecture
formats
enumerated
signals
scsh)
(files (scsh static)))
,user
,load-package static
,open static
(test)
!#
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define *scsh-image* "scsh/scsh.image") ; input file
(define *scsh-image* "debug/tiny.image") ; input file
(define *image-lib* "scsh.a") ; output file
(define *temp-dir* (string-append
"/tmp/"
"scsh"
(number->string
(pid)))) ;; prefix for temp files - in their own dir
(define *prefix* (string-append *temp-dir* "/"))
(define (make-static-heap image archive)
(if (file-exists? *temp-dir*)
(if (equal? 'directory (file-info:type (file-attributes *temp-dir*)))
(with-cwd *temp-dir*
(map delete-file (directory-files *temp-dir* #t)))
(delete-file *temp-dir*)))
(create-directory *temp-dir* #o755 #t)
(let ((size (file-info:size (file-attributes image))))
(do-it size image *prefix*)))
(define (test)
(make-static-heap *scsh-image* *image-lib*))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; 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 prefix)
(let ((start (init bytes infile)))
(emit-area-declarations "p" immutable? "const " prefix)
(emit-area-declarations "i" mutable? "" prefix)
(emit-area-initializers "p" immutable? "const " prefix)
(emit-area-initializers "i" mutable? "" prefix)
(call-with-output-file (string-append prefix "entry.c")
(lambda (port)
(display "#include \"" port)
(display prefix port)
(display (descriptor-include start) port)
(display ".h\"" port)
(newline 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)))
(let ((n (nchunks)))
(message n (if (= n 1) " chunk" " chunks")))
start))
(define (nchunks) (+ (chunk-number (heap-pointer)) 1))
; emit struct declarations for areas
(define (emit-area-declarations name in-area? const prefix)
(for-each-stored-object
(string-append prefix name) ".h"
(lambda (chunk port)
(message name chunk " declaration")
(format port "#define D(x) (long)(&x)+7~%")
(format port "#define H unsigned long~%")
(display "struct " port) (display name port) (display chunk port)
(display " {" port) (newline port))
(lambda (x port)
(if (in-area? x)
(emit-declaration x port)))
(lambda (chunk port)
(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 prefix)
(for-each-stored-object
(string-append prefix name) ".c"
(lambda (chunk port)
(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 port)
(if (in-area? x)
(emit-initializer x port)))
(lambda (chunk port)
(display "};" port) (newline port)))
(call-with-output-file
(string-append prefix ".c")
(lambda (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)))
; hacked emit-descriptor returns chunk or #f
(define (descriptor-include x)
(if (stob? x)
(string-append
(if (immutable? x) "p" "i")
(number->string (chunk-number x)))
#f))
; 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 suffix 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)))