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[/] [zipcpu/] [trunk/] [sw/] [zasm/] [zopcodes.h] - Rev 142
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//////////////////////////////////////////////////////////////////////////////// // // Filename: zopcodes.h // // Project: Zip CPU -- a small, lightweight, RISC CPU core // // Purpose: A structure defined to keep track of our various opcodes and // some of their shortcut synonyms. // // Creator: Dan Gisselquist, Ph.D. // Gisselquist Technology, LLC // //////////////////////////////////////////////////////////////////////////////// // // Copyright (C) 2015, Gisselquist Technology, LLC // // This program is free software (firmware): you can redistribute it and/or // modify it under the terms of the GNU General Public License as published // by the Free Software Foundation, either version 3 of the License, or (at // your option) any later version. // // This program is distributed in the hope that it will be useful, but WITHOUT // ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License along // with this program. (It's in the $(ROOT)/doc directory, run make with no // target there if the PDF file isn't present.) If not, see // <http://www.gnu.org/licenses/> for a copy. // // License: GPL, v3, as defined and found on www.gnu.org, // http://www.gnu.org/licenses/gpl.html // // //////////////////////////////////////////////////////////////////////////////// #ifndef ZOPCODES_H #define ZOPCODES_H #define ZIP_OPUNUSED -1 #define ISUSEROP(A) ((a&(~0x0f))==0x000) #define ISSUPROP(A) ((a&(~0x0f))==0x010) #define ISLCLROP(A) ((a&(~0x0f))==0x020) #define ZIP_BITFIELD(LN,MN) (((LN&0x0ff)<<8)+(MN&0x0ff)) #define ZIP_REGFIELD(MN) (0x00000400 +(MN&0x0ff)) #define ZIP_URGFIELD(MN) (0x0100400 +(MN&0x0ff)) #define ZIP_SRGFIELD(MN) (0x0200400 +(MN&0x0ff)) #define ZIP_IMMFIELD(LN,MN) (0x40000000 + (((LN&0x0ff)<<8)+(MN&0x0ff))) // Sgn extnd // #define REGVAL(V) ((V & 0x0f)+0x020) typedef unsigned int ZIPI; // A Zip CPU instruction typedef struct { char s_opstr[8]; ZIPI s_mask, s_val; int s_result, s_ra, s_rb, s_i, s_cf; } ZOPCODE; extern const ZOPCODE zoplist[]; extern const int nzoplist; // Disassemble an opcode extern void zipi_to_string(const ZIPI ins, char *la, char *lb); extern const char *zop_regstr[]; extern const char *zop_ccstr[]; extern unsigned int zop_early_branch(const unsigned int pc, const ZIPI ins); #endif
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