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* module/system/vm/debug.scm, module/system/vm/frame.scm, module/system/vm/vm.scm: Switch to LGPLv3+.
61 lines
1.7 KiB
Scheme
61 lines
1.7 KiB
Scheme
;;; Guile VM debugging facilities
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;;; Copyright (C) 2001, 2009 Free Software Foundation, Inc.
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;;;
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;;; This library is free software; you can redistribute it and/or
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;;; modify it under the terms of the GNU Lesser General Public
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;;; License as published by the Free Software Foundation; either
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;;; version 3 of the License, or (at your option) any later version.
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;;;
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;;; This library 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 GNU
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;;; Lesser General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU Lesser General Public
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;;; License along with this library; if not, write to the Free Software
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;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;;; Code:
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(define-module (system vm debug)
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#:use-module (system base syntax)
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#:use-module (system vm vm)
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#:use-module (system vm frame)
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#:use-module (ice-9 format)
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#:export (vm-debugger vm-backtrace))
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;;;
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;;; Debugger
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;;;
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(define-record/keywords <debugger> vm chain index)
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(define (vm-debugger vm)
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(let ((chain (vm-last-frame-chain vm)))
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(if (null? chain)
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(display "Nothing to debug\n")
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(debugger-repl (make-debugger
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#:vm vm #:chain chain #:index (length chain))))))
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(define (debugger-repl db)
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(let loop ()
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(display "debug> ")
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(let ((cmd (read)))
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(case cmd
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((bt) (vm-backtrace (debugger-vm db)))
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((stack)
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(write (vm-fetch-stack (debugger-vm db)))
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(newline))
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(else
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(format #t "Unknown command: ~A" cmd))))))
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;;;
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;;; Backtrace
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;;;
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(define (vm-backtrace vm)
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(print-frame-chain-as-backtrace
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(reverse (vm-last-frame-chain vm))))
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