summaryrefslogtreecommitdiff
path: root/module/language/objcode
diff options
context:
space:
mode:
authorAndy Wingo <wingo@pobox.com>2008-11-14 22:42:31 +0100
committerAndy Wingo <wingo@pobox.com>2008-11-14 22:42:31 +0100
commitb0b180d5227d76f5ca1e2f48b06f6d45195bd1f8 (patch)
treec4402c9e04ec35d4e22092cc829b6cbddaa383eb /module/language/objcode
parent7493339cfc36cf95b77aa8a1ad4cd0b5dd36710a (diff)
downloadguile-b0b180d5227d76f5ca1e2f48b06f6d45195bd1f8.tar.gz
nifty generic compiler infrastructure -- no more hardcoded passes
* module/system/base/language.scm (<language>): Rework so that instead of hardcoding passes in the language, we define compilers that translate from one language to another. Add `parser' to the language fields, a bit of a hack but useful for languages with s-expression external representations but with record internal representations. (define-language, *compilation-cache*, invalidate-compilation-cache!) (compute-compilation-order, lookup-compilation-order): Add an algorithm that does a depth-first search for a translation path from a source language to a target language, caching the result in a lookup table. * module/language/scheme/spec.scm: * module/language/ghil/spec.scm: Update to the new language format. * module/language/glil/spec.scm: Add a language specification for GLIL, with a compiler to objcode. Also there are parsers and printers, for repl usage, but for some reason this doesn't work yet. * module/language/objcode/spec.scm: Define a language specification for object code. There is some sleight of hand here, in the "compiler" to values; but there is method behind the madness, because this way we higher levels can pass environments (a module + externals pair) to objcode->program. * module/language/value/spec.scm: Define a language specification for values. There is something intellectually dishonest about this, but it does serve its purpose as a foundation for the language hierarchy. * configure.in: * module/language/Makefile.am * module/language/ghil/Makefile.am * module/language/glil/Makefile.am * module/language/objcode/Makefile.am * module/language/value/Makefile.am: Autotomfoolery for the ghil, glil, objcode, and value languages. * module/language/scheme/translate.scm (translate): Import the bits that understand `compile-time-environment' here, and pass on the relevant portions of the environment to the next compiler pass. * module/system/base/compile.scm (current-language): New procedure, refs the current language fluid, or lazily sets it to scheme. (call-once, call-with-output-file/atomic): Refactor these bits to use with-throw-handler. No functional change. (compile-file, compile-and-load, compile-passes, compile-fold) (compile): Refactor the public interface of the compiler to be generic and simple. Uses `lookup-compilation-order' to find a path from the source language to the target language. * module/system/base/syntax.scm (define-type): Adapt to changes in define-record. (define-record): Instead of expecting all slots in the first form, expect them in the body, and let the first form hold the options. * module/system/il/compile.scm (compile): Adapt to the compilation pass API (three in and two out). * module/system/il/ghil.scm (<ghil-var>, <ghil-env>) (<ghil-toplevel-env>): Adapt to define-record changes. * module/system/il/glil.scm (<glil-vars>): Adapt to define-record changes. (<glil>, print-glil): Add a GLIL record printer that uses unparse. (parse-glil, unparse-glil): Update unparse (formerly known as pprint), and write a parse function. * module/system/repl/common.scm (<repl>): Adapt to define-record changes. (repl-parse): New function, parses the read form using the current language. Something of a hack. (repl-compile): Adapt to changes in `compile'. (repl-eval): Fix up the does-the-language-have-a-compiler check for changes in <language>. * module/system/repl/repl.scm (start-repl): Parse the form before eval. * module/system/repl/command.scm (describe): Parse. (compile): Be more generic. (compile-file): Adapt to changes in compile-file. (disassemble, time, profile, trace): Parse. * module/system/vm/debug.scm: * module/system/vm/assemble.scm: Adapt to define-record changes. * module/language/scheme/translate.scm (receive): Fix an important bug that gave `receive' letrec semantics instead of let semantics. Whoops!
Diffstat (limited to 'module/language/objcode')
-rw-r--r--module/language/objcode/Makefile.am3
-rw-r--r--module/language/objcode/spec.scm52
2 files changed, 55 insertions, 0 deletions
diff --git a/module/language/objcode/Makefile.am b/module/language/objcode/Makefile.am
new file mode 100644
index 000000000..6d81c41c1
--- /dev/null
+++ b/module/language/objcode/Makefile.am
@@ -0,0 +1,3 @@
+SOURCES = spec.scm
+modpath = language/objcode
+include $(top_srcdir)/am/guilec
diff --git a/module/language/objcode/spec.scm b/module/language/objcode/spec.scm
new file mode 100644
index 000000000..5e0ae3cc3
--- /dev/null
+++ b/module/language/objcode/spec.scm
@@ -0,0 +1,52 @@
+;;; Guile Lowlevel Intermediate Language
+
+;; Copyright (C) 2001 Free Software Foundation, Inc.
+
+;; This program 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, or (at your option)
+;; any later version.
+;;
+;; This program 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 this program; see the file COPYING. If not, write to
+;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Code:
+
+(define-module (language objcode spec)
+ #:use-module (system base language)
+ #:use-module (language value spec)
+ #:use-module (system vm objcode)
+ #:export (objcode make-objcode-env))
+
+(define (make-objcode-env module externals)
+ (cons module externals))
+
+(define (objcode-env-module env)
+ (if env (car env) (current-module)))
+
+(define (objcode-env-externals env)
+ (if env (cdr env) '()))
+
+(define (objcode->value x e opts)
+ (let ((thunk (objcode->program x (objcode-env-externals e))))
+ (if e
+ (save-module-excursion
+ (lambda ()
+ (set-current-module (objcode-env-module e))
+ (values (thunk) #f)))
+ (values (thunk) #f))))
+
+(define-language objcode
+ #:title "Guile Object Code"
+ #:version "0.3"
+ #:reader #f
+ #:printer (lambda (x port) (uniform-vector-write (objcode->u8vector x) port))
+ #:compilers `((,value . ,objcode->value))
+ )