////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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// Filename: zopcodes.h
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// Filename: zopcodes.h
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//
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//
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// Project: Zip CPU -- a small, lightweight, RISC CPU core
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// Project: Zip CPU -- a small, lightweight, RISC CPU core
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//
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//
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// Purpose: A structure defined to keep track of our various opcodes and
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// Purpose: A structure defined to keep track of our various opcodes and
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// some of their shortcut synonyms.
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// some of their shortcut synonyms.
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//
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//
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// Creator: Dan Gisselquist, Ph.D.
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// Creator: Dan Gisselquist, Ph.D.
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// Gisselquist Technology, LLC
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// Gisselquist Technology, LLC
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//
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//
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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// Copyright (C) 2015, Gisselquist Technology, LLC
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// Copyright (C) 2015, Gisselquist Technology, LLC
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//
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//
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// This program is free software (firmware): you can redistribute it and/or
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// This program is free software (firmware): you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as published
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// modify it under the terms of the GNU General Public License as published
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// by the Free Software Foundation, either version 3 of the License, or (at
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// by the Free Software Foundation, either version 3 of the License, or (at
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// your option) any later version.
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// your option) any later version.
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//
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//
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
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// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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// for more details.
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//
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//
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// You should have received a copy of the GNU General Public License along
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// You should have received a copy of the GNU General Public License along
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// with this program. (It's in the $(ROOT)/doc directory, run make with no
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// with this program. (It's in the $(ROOT)/doc directory, run make with no
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// target there if the PDF file isn't present.) If not, see
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// target there if the PDF file isn't present.) If not, see
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// <http://www.gnu.org/licenses/> for a copy.
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// <http://www.gnu.org/licenses/> for a copy.
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//
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//
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// License: GPL, v3, as defined and found on www.gnu.org,
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// License: GPL, v3, as defined and found on www.gnu.org,
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// http://www.gnu.org/licenses/gpl.html
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// http://www.gnu.org/licenses/gpl.html
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//
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//
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//
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//
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ZOPCODES_H
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#ifndef ZOPCODES_H
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#define ZOPCODES_H
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#define ZOPCODES_H
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#define OPUNUSED -1
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#define ZIP_OPUNUSED -1
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#define ISUSEROP(A) ((a&(~0x0f))==0x000)
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#define ISUSEROP(A) ((a&(~0x0f))==0x000)
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#define ISSUPROP(A) ((a&(~0x0f))==0x010)
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#define ISSUPROP(A) ((a&(~0x0f))==0x010)
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#define ISLCLROP(A) ((a&(~0x0f))==0x020)
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#define ISLCLROP(A) ((a&(~0x0f))==0x020)
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#define BITFIELD(LN,MN) (((LN&0x0ff)<<8)+(MN&0x0ff))
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#define ZIP_BITFIELD(LN,MN) (((LN&0x0ff)<<8)+(MN&0x0ff))
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#define REGFIELD(MN) (0x00000400 +(MN&0x0ff))
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#define ZIP_REGFIELD(MN) (0x00000400 +(MN&0x0ff))
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#define URGFIELD(MN) (0x0100400 +(MN&0x0ff))
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#define ZIP_URGFIELD(MN) (0x0100400 +(MN&0x0ff))
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#define SRGFIELD(MN) (0x0200400 +(MN&0x0ff))
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#define ZIP_SRGFIELD(MN) (0x0200400 +(MN&0x0ff))
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#define IMMFIELD(LN,MN) (0x40000000 + (((LN&0x0ff)<<8)+(MN&0x0ff))) // Sgn extnd
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#define ZIP_IMMFIELD(LN,MN) (0x40000000 + (((LN&0x0ff)<<8)+(MN&0x0ff))) // Sgn extnd
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// #define REGVAL(V) ((V & 0x0f)+0x020)
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// #define REGVAL(V) ((V & 0x0f)+0x020)
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typedef unsigned int ZIPI; // A Zip CPU instruction
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typedef unsigned int ZIPI; // A Zip CPU instruction
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typedef struct {
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typedef struct {
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char s_opstr[8];
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char s_opstr[8];
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ZIPI s_mask, s_val;
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ZIPI s_mask, s_val;
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int s_result, s_ra, s_rb, s_i, s_cf;
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int s_result, s_ra, s_rb, s_i, s_cf;
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} ZOPCODE;
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} ZOPCODE;
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extern const ZOPCODE zoplist[];
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extern const ZOPCODE zoplist[];
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extern const int nzoplist;
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extern const int nzoplist;
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// Disassemble an opcode
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// Disassemble an opcode
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extern void zipi_to_string(const ZIPI ins, char *la, char *lb);
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extern void zipi_to_string(const ZIPI ins, char *la, char *lb);
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extern const char *zop_regstr[];
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extern const char *zop_regstr[];
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extern const char *zop_ccstr[];
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extern const char *zop_ccstr[];
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extern unsigned int zop_early_branch(const unsigned int pc, const ZIPI ins);
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extern unsigned int zop_early_branch(const unsigned int pc, const ZIPI ins);
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#endif
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#endif
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