#| -*-Scheme-*-

Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
    1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
    2017, 2018, 2019, 2020 Massachusetts Institute of Technology

This file is part of MIT/GNU Scheme.

MIT/GNU Scheme is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.

MIT/GNU Scheme is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with MIT/GNU Scheme; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
USA.

|#

;;;; Load the disassembler into a Scheme containing the compiler

(declare (usual-integrations))

(define (load-disassembler #!optional directory addressing-granularity)
  (with-working-directory-pathname
    (cond ((not (default-object? directory))
	   directory)
	  ((equal? microcode-id/operating-system-name "unix")
	   "/usr/local/lib/mit-scheme/SRC/compiler/machine")
	  (else
	   "/scheme/compiler/machines/i386"))
    (lambda ()
      (let* ((parent (or (name->package '(compiler))
			 (find-package '())))
	     (parenv (package/environment parent))
	     (disassembler
	      (package/add-child! parent
				  'disassembler
				  (extend-top-level-environment parenv))))
	(let ((disenv (package/environment disassembler))
	      (global system-global-environment)
	      (compinfo (package/environment
			 (find-package '(runtime compiler-info)))))
	  (define (export name)
	    (link-variables global name disenv name))
	  (define (import name)
	    (link-variables disenv name compinfo name))

	  (if (not (environment-bound? parenv 'addressing-granularity))
	      (environment-define
	       parenv
	       'addressing-granularity
	       (if (default-object? addressing-granularity)
		   8
		   addressing-granularity)))
	  (for-each import
		    '(compiled-code-block/dbg-info
		      dbg-info-vector/blocks-vector
		      dbg-info-vector?
		      dbg-info/labels
		      dbg-label/external?
		      dbg-label/name
		      dbg-labels/find-offset))
	  (if (file-exists? "mips.scm")
	      (load "mips" disenv))
	  (load "dassm1" disenv)
	  (load "dassm2" disenv)
	  (load "dassm3" disenv)
	  (if (file-exists? "dinstr1.scm")
	      (begin
		;; For the vax
		(load "dinstr1")
		(load "dinstr2")
		(load "dinstr3")))
	  (for-each export
		    '(compiler:write-lap-file
		      compiler:disassemble)))))))