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7656f19446
* libguile/vm-engine.c (VM_NAME): Engines take the VM itself (not the vp), so they can pass the VM to hooks. No more hook args, we dispatch without them. * libguile/vm-engine.h (RUN_HOOK): Dispatch the hook if the trace level is positive (instead of if the hook is there). Don't cache registers on return from the dispatch. * libguile/vm.h: * libguile/vm.c (vm_dispatch_hook): Don't bother with a dynwind; instead decrement the trace level when going into a hook, and if we have a nonlocal exit, the trace level never gets incremented again. Worse is better. (make_vm, scm_vm_trace_level, scm_set_vm_trace_level_x): New concept, trace level. If positive, we run the hooks, otherwise we don't. Should work. Removed scm_vm_trace_frame, I don't think that was the right way to do it. * module/system/vm/vm.scm: Replace vm-trace-frame with vm-trace-level and set-vm-trace-level!; the hooks actually get the frame as an argument now.
40 lines
1.5 KiB
Scheme
40 lines
1.5 KiB
Scheme
;;; Guile VM core
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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 vm)
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#:use-module (system vm frame)
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#:use-module (system vm program)
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#:export (vm? the-vm make-vm vm-version
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vm:ip vm:sp vm:fp vm:last-ip
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vm-load vm-option set-vm-option! vm-version
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vms:time vms:clock
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vm-trace-level set-vm-trace-level!
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vm-next-hook vm-apply-hook vm-boot-hook vm-return-hook
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vm-break-hook vm-exit-hook vm-halt-hook vm-enter-hook))
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(load-extension "libguile" "scm_init_vm")
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(define (vms:time stat) (vector-ref stat 0))
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(define (vms:clock stat) (vector-ref stat 1))
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(define (vm-load vm objcode)
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(vm (make-program objcode)))
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