89 lines
2.6 KiB
C
89 lines
2.6 KiB
C
#ifndef __codes_H
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#define __codes_H
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/*
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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: codes.h,v 1.1 2001/03/11 00:29:38 steve Exp $"
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#endif
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# include "pointers.h"
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# include "vthread.h"
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# include <stdio.h>
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typedef struct vvp_code_s *vvp_code_t;
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typedef bool (*vvp_code_fun)(vthread_t thr, vvp_code_t code);
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/*
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* These functions are implementations of executable op-codes. The
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* implementation lives in the vthread.cc file so that they have
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* access to the thread context.
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*/
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extern bool of_ASSIGN(vthread_t thr, vvp_code_t code);
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extern bool of_DELAY(vthread_t thr, vvp_code_t code);
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extern bool of_END(vthread_t thr, vvp_code_t code);
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extern bool of_SET(vthread_t thr, vvp_code_t code);
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extern bool of_NOOP(vthread_t thr, vvp_code_t code);
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/*
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* This is the format of a machine code instruction.
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*/
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struct vvp_code_s {
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vvp_code_fun opcode;
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unsigned short bit_idx;
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unsigned long number;
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union {
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vvp_ipoint_t iptr;
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vvp_cpoint_t cptr;
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};
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};
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/*
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* This function clears the code space, ready for initialization. This
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* needs to be done exactly once before any instructions are created.
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*/
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extern void codespace_init(void);
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/*
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* This function returns a pointer to the next free instruction in the
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* code address space.
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*/
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extern vvp_cpoint_t codespace_allocate(void);
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/*
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* Return a pointer to the indexed instruction in the codespace. The
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* ptr must be a value returned from codespace_allocate. The compiler
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* can use this to get a handle on the instruction to be created, and
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* the runtime uses this to get the instruction addressed by the PC or
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* by a branch instruction.
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*/
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extern vvp_code_t codespace_index(vvp_cpoint_t ptr);
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extern void codespace_dump(FILE*fd);
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/*
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* $Log: codes.h,v $
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* Revision 1.1 2001/03/11 00:29:38 steve
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* Add the vvp engine to cvs.
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*
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*/
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#endif
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