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guile/module/system/vm/trace.scm
Andy Wingo 476e357281 remove all mentions of "external" from the compiler and related code
With this, GHIL is effectively bitrotten. I need to port the ECMAScript
compiler to tree-il, then I'll remove it.

* module/language/assembly.scm (byte-length):
* module/language/assembly/compile-bytecode.scm (write-bytecode):
* module/language/assembly/decompile-bytecode.scm (decode-load-program):
* module/language/assembly/disassemble.scm (disassemble-load-program):
  (disassemble-free-vars, code-annotation):
* module/language/glil.scm (<glil-program>, <glil-local>)
  (<glil-exteral>, parse-glil, unparse-glil):
* module/language/glil/compile-assembly.scm (make-meta):
  (compile-assembly, glil->assembly):
* module/language/glil/decompile-assembly.scm (decompile-toplevel):
  (decompile-load-program):
* module/language/objcode/spec.scm (decompile-value):
* module/language/tree-il/compile-glil.scm (flatten-lambda):
* module/system/vm/frame.scm (frame-binding-ref):
  (frame-binding-set!):
* module/system/vm/program.scm (binding:boxed?):
* module/system/vm/trace.scm (trace-next):
* test-suite/tests/asm-to-bytecode.test ("compiler"):
* test-suite/tests/tree-il.test: Remove all mentions of "external", and
  of <glil-local>. Docs updates will come soon.
2009-07-23 17:15:17 +02:00

76 lines
2.6 KiB
Scheme

;;; Guile VM tracer
;; Copyright (C) 2001, 2009 Free Software Foundation, Inc.
;;; This library is free software; you can redistribute it and/or
;;; modify it under the terms of the GNU Lesser General Public
;;; License as published by the Free Software Foundation; either
;;; version 3 of the License, or (at your option) any later version.
;;;
;;; This library 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
;;; Lesser General Public License for more details.
;;;
;;; You should have received a copy of the GNU Lesser General Public
;;; License along with this library; if not, write to the Free Software
;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;;; Code:
(define-module (system vm trace)
#:use-module (system base syntax)
#:use-module (system vm vm)
#:use-module (system vm frame)
#:use-module (ice-9 format)
#:export (vm-trace vm-trace-on vm-trace-off))
(define (vm-trace vm objcode . opts)
(dynamic-wind
(lambda () (apply vm-trace-on vm opts))
(lambda () (vm-load vm objcode))
(lambda () (apply vm-trace-off vm opts))))
(define (vm-trace-on vm . opts)
(set-vm-option! vm 'trace-first #t)
(if (memq #:b opts) (add-hook! (vm-next-hook vm) trace-next))
(set-vm-option! vm 'trace-options opts)
(add-hook! (vm-apply-hook vm) trace-apply)
(add-hook! (vm-return-hook vm) trace-return))
(define (vm-trace-off vm . opts)
(if (memq #:b opts) (remove-hook! (vm-next-hook vm) trace-next))
(remove-hook! (vm-apply-hook vm) trace-apply)
(remove-hook! (vm-return-hook vm) trace-return))
(define (trace-next vm)
(define (puts x) (display #\tab) (write x))
(define (truncate! x n)
(if (> (length x) n)
(list-cdr-set! x (1- n) '(...))) x)
;; main
(format #t "0x~8X ~16S" (vm:ip vm) (vm-fetch-code vm))
(do ((opts (vm-option vm 'trace-options) (cdr opts)))
((null? opts) (newline))
(case (car opts)
((:s) (puts (truncate! (vm-fetch-stack vm) 3)))
((:l) (puts (vm-fetch-locals vm))))))
(define (trace-apply vm)
(if (vm-option vm 'trace-first)
(set-vm-option! vm 'trace-first #f)
(let ((chain (vm-current-frame-chain vm)))
(print-indent chain)
(print-frame-call (car chain))
(newline))))
(define (trace-return vm)
(let ((chain (vm-current-frame-chain vm)))
(print-indent chain)
(write (vm-return-value vm))
(newline)))
(define (print-indent chain)
(cond ((pair? (cdr chain))
(display "| ")
(print-indent (cdr chain)))))