97 lines
2.2 KiB
C++
97 lines
2.2 KiB
C++
/*
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* Copyright (c) 2001 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, 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; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#if !defined(WINNT)
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#ident "$Id: vthread.cc,v 1.1 2001/03/11 00:29:39 steve Exp $"
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#endif
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# include "vthread.h"
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# include "codes.h"
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# include "schedule.h"
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struct vthread_s {
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/* This is the program counter. */
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unsigned long pc;
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};
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/*
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* Create a new thread with the given start address.
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*/
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vthread_t v_newthread(unsigned long pc)
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{
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vthread_t thr = new struct vthread_s;
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thr->pc = pc;
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return thr;
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}
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/*
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* This function runs a thread by fetching an instruction,
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* incrementing the PC, and executing the instruction.
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*/
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void vthread_run(vthread_t thr)
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{
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for (;;) {
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vvp_code_t cp = codespace_index(thr->pc);
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thr->pc += 1;
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bool rc = (cp->opcode)(thr, cp);
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if (rc == false)
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return;
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}
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}
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bool of_ASSIGN(vthread_t thr, vvp_code_t cp)
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{
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printf("thread %p: %%assign\n");
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return true;
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}
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bool of_DELAY(vthread_t thr, vvp_code_t cp)
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{
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printf("thread %p: %%delay %u\n", thr, cp->number);
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schedule_vthread(thr, cp->number);
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return false;
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}
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bool of_END(vthread_t thr, vvp_code_t cp)
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{
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printf("thread %p: %%end\n", thr);
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return false;
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}
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bool of_NOOP(vthread_t thr, vvp_code_t cp)
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{
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return true;
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}
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bool of_SET(vthread_t thr, vvp_code_t cp)
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{
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printf("thread %p: %%set\n");
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return true;
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}
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/*
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* $Log: vthread.cc,v $
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* Revision 1.1 2001/03/11 00:29:39 steve
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* Add the vvp engine to cvs.
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*
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*/
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