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91 lines
2.3 KiB
Scheme
91 lines
2.3 KiB
Scheme
;;; Guile VM core
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;; Copyright (C) 2001 Free Software Foundation, Inc.
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with this program; see the file COPYING. If not, write to
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;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Code:
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(define-module (system vm core))
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;;;
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;;; Core procedures
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;;;
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(dynamic-call "scm_init_vm" (dynamic-link "libguilevm.so"))
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(module-export! (current-module)
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(delq! '%module-public-interface
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(hash-fold (lambda (k v d) (cons k d)) '()
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(module-obarray (current-module)))))
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;;;
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;;; Dumpcode interface
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;;;
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(export make-dumpcode dumpcode? dumpcode-version
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dumpcode-nlocs dumpcode-nexts dumpcode-bytecode
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load-dumpcode save-dumpcode)
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(define *dumpcode-cookie* (string-append "\0GBC-" (vm-version)))
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(define (make-dumpcode nlocs nexts bytes)
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(string-append *dumpcode-cookie*
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(integer->bytes nlocs)
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(integer->bytes nexts)
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bytes))
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(define (dumpcode? x)
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(and (string? x)
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(> (string-length x) 10)
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(string=? (substring x 1 4) "GBC")))
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(define (dumpcode-version x)
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(substring x 5 8))
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(define (dumpcode-nlocs x)
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(bytes->integer x 8))
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(define (dumpcode-nexts x)
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(bytes->integer x 9))
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(define (dumpcode-bytecode x)
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(substring x 10))
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(define (load-dumpcode file)
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(let ((bytes (make-uniform-vector (stat:size (stat file)) #\a)))
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(call-with-input-file file
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(lambda (p) (uniform-vector-read! bytes p)))
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bytes))
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(define (save-dumpcode dump file)
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(call-with-output-file file
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(lambda (out) (uniform-vector-write dump out))))
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(define (integer->bytes n)
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(string (integer->char n)))
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(define (bytes->integer bytes start)
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(char->integer (string-ref bytes start)))
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;;;
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;;; Statistics interface
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;;;
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(export vms:time vms:clock)
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(define (vms:time stat) (vector-ref stat 0))
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(define (vms:clock stat) (vector-ref stat 1))
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