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d7236899f5
* module/language/assembly/Makefile.am: * module/language/assembly/disassemble.scm: Add a disassembler, based on the old one but fitting in with the decompiler tower. * module/language/objcode/spec.scm (decompile-value): When decompiling programs, shove all the metadata that we know about into the "env". * module/system/base/compile.scm (decompile-fold, decompile): Return the env from `decompile' as a second value. Not sure if `compile' should do this too.
80 lines
2.7 KiB
Scheme
80 lines
2.7 KiB
Scheme
;;; Guile Lowlevel Intermediate Language
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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 (language objcode spec)
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#:use-module (system base language)
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#:use-module (system vm objcode)
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#:use-module (system vm program)
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#:export (objcode make-objcode-env))
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(define (make-objcode-env module externals)
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(cons module externals))
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(define (objcode-env-module env)
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(if env (car env) (current-module)))
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(define (objcode-env-externals env)
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(if env (cdr env) '()))
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(define (objcode->value x e opts)
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(let ((thunk (make-program x #f (objcode-env-externals e))))
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(if e
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(save-module-excursion
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(lambda ()
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(set-current-module (objcode-env-module e))
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(values (thunk) #f)))
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(values (thunk) #f))))
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(define (decompile-value x env opts)
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(cond
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((program? x)
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(let ((objs (program-objects x))
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(meta (program-meta x))
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(exts (program-external x))
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(binds (program-bindings x))
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(srcs (program-sources x))
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(nargs (arity:nargs (program-arity x))))
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(let ((blocs (and binds
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(append (list-head binds nargs)
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(filter (lambda (x) (not (binding:extp x)))
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(list-tail binds nargs)))))
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(bexts (and binds
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(filter binding:extp binds))))
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(values (program-objcode x)
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`((objects . ,objs)
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(meta . ,(and meta (meta)))
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(exts . ,exts)
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(blocs . ,blocs)
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(bexts . ,bexts)
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(sources . ,srcs))))))
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((objcode? x)
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(values x #f))
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(else
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(error "can't decompile ~A: not a program or objcode" x))))
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(define-language objcode
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#:title "Guile Object Code"
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#:version "0.3"
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#:reader #f
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#:printer write-objcode
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#:compilers `((value . ,objcode->value))
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#:decompilers `((value . ,decompile-value))
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)
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