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////////////////////////////////////////////////////////////////////////////////
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//
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// Filename: zparser.h
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//
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// Project: Zip CPU -- a small, lightweight, RISC CPU core
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//
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// Purpose: The beginnings of a parser for Zip CPU assembly.
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//
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// Creator: Dan Gisselquist, Ph.D.
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// Gisselquist Tecnology, LLC
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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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//
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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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// 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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//
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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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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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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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// 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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// <http://www.gnu.org/licenses/> for a copy.
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//
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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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//
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//
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ZPARSER_H
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#define ZPARSER_H
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class ZPARSER {
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public:
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typedef unsigned int ZIPI, ZIPA;
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typedef int ZIPIMM;
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typedef enum {
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ZIP_R0, ZIP_R1, ZIP_R2, ZIP_R3, ZIP_R4, ZIP_R5, ZIP_R6, ZIP_R7,
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ZIP_R8, ZIP_R9, ZIP_R10, ZIP_R11, ZIP_R12,
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ZIP_SP, ZIP_CC, ZIP_PC,
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ZIP_uR0, ZIP_uR1, ZIP_uR2, ZIP_uR3, ZIP_uR4, ZIP_uR5, ZIP_uR6, ZIP_uR7,
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ZIP_uR8, ZIP_uR9, ZIP_uR10, ZIP_uR11, ZIP_uR12,
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ZIP_uSP, ZIP_uCC, ZIP_uPC,
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ZIP_Rnone
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} ZIPREG;
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typedef enum {
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ZIPC_ALWAYS, ZIPC_Z, ZIPC_NZ, ZIPC_GE, ZIPC_GT, ZIPC_LT,
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ZIPC_C, ZIPC_V
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} ZIPCOND;
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bool iscomment(const char *line) const;
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bool islabel(const char *line) const;
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bool parse_op(const char *line, ZIPA pc, ZIPI &instruction, const unsigned lineno) const;
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bool parse(const char *line, ZIPA &pc, ZIPI &instruction, const unsigned lineno);
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ZIPI op_cmp(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const;
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ZIPI op_cmp(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const;
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ZIPI op_cmp(ZIPIMM imm, ZIPREG b, ZIPREG a) const
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{ return op_cmp(ZIPC_ALWAYS, imm, b, a); }
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ZIPI op_cmp(ZIPIMM imm, ZIPREG a) const
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{ return op_cmp(ZIPC_ALWAYS, imm, a); }
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ZIPI op_tst(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const;
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ZIPI op_tst(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const;
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ZIPI op_tst(ZIPIMM imm, ZIPREG a) const
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{ return op_tst(ZIPC_ALWAYS, imm, a); }
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ZIPI op_tst(ZIPCOND cnd, ZIPREG a) const
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{ return op_tst(cnd, -1, a); }
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ZIPI op_mov(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const;
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ZIPI op_mov(ZIPIMM imm, ZIPREG b, ZIPREG a) const
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{ return op_mov(ZIPC_ALWAYS, imm, b, a); }
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ZIPI op_mov(ZIPREG b, ZIPREG a) const
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{ return op_mov(ZIPC_ALWAYS, 0, b, a); }
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ZIPI op_ldi(ZIPIMM imm, ZIPREG a) const;
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ZIPI op_trap(ZIPCOND cnd, ZIPIMM imm) const;
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ZIPI op_trap(ZIPIMM imm) const
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{ return op_trap(ZIPC_ALWAYS, imm); }
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ZIPI op_clr(ZIPREG a) const { return op_ldi(0, a); }
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ZIPI op_noop(void) const;
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ZIPI op_break(void) const;
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ZIPI op_ldihi(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const;
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ZIPI op_ldilo(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const;
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ZIPI op_ldihi(ZIPIMM imm, ZIPREG a) const
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{ return op_ldihi(ZIPC_ALWAYS, imm, a); }
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ZIPI op_ldilo(ZIPIMM imm, ZIPREG a) const
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{ return op_ldilo(ZIPC_ALWAYS, imm, a); }
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ZIPI op_lod(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const;
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ZIPI op_lod(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const;
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ZIPI op_lod(ZIPIMM imm, ZIPREG b, ZIPREG a) const
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{ return op_lod(ZIPC_ALWAYS, imm, b, a); }
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ZIPI op_lod(ZIPIMM imm, ZIPREG a) const
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{ return op_lod(ZIPC_ALWAYS, imm, a); }
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ZIPI op_sto(ZIPCOND cnd, ZIPREG v, ZIPIMM imm, ZIPREG b) const;
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ZIPI op_sto(ZIPCOND cnd, ZIPREG v, ZIPIMM imm) const;
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ZIPI op_sto(ZIPREG v, ZIPIMM imm, ZIPREG b) const
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{ return op_sto(ZIPC_ALWAYS, v, imm, b); }
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ZIPI op_sto(ZIPREG v, ZIPIMM imm) const
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{ return op_sto(ZIPC_ALWAYS, v, imm); }
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ZIPI op_sub(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const;
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ZIPI op_sub(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const;
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ZIPI op_sub(ZIPIMM imm, ZIPREG b, ZIPREG a) const
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{ return op_sub(ZIPC_ALWAYS, imm, b, a); }
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ZIPI op_sub(ZIPIMM imm, ZIPREG a) const
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{ return op_sub(ZIPC_ALWAYS, imm, a); }
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ZIPI op_and(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const;
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ZIPI op_and(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const;
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ZIPI op_and(ZIPIMM imm, ZIPREG b, ZIPREG a) const
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{ return op_and(ZIPC_ALWAYS, imm, b, a); }
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ZIPI op_and(ZIPIMM imm, ZIPREG a) const
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{ return op_and(ZIPC_ALWAYS, imm, a); }
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ZIPI op_add(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const;
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ZIPI op_add(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const;
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ZIPI op_add(ZIPIMM imm, ZIPREG b, ZIPREG a) const
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{ return op_add(ZIPC_ALWAYS, imm, b, a); }
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ZIPI op_add(ZIPIMM imm, ZIPREG a) const // GOOD
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{ return op_add(ZIPC_ALWAYS, imm, a); }
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ZIPI op_or(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const;
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ZIPI op_or(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const;
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ZIPI op_or(ZIPIMM imm, ZIPREG b, ZIPREG a) const
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{ return op_or(ZIPC_ALWAYS, imm, b, a); }
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ZIPI op_or(ZIPIMM imm, ZIPREG a) const
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{ return op_or(ZIPC_ALWAYS, imm, a); }
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ZIPI op_xor(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const;
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ZIPI op_xor(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const;
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ZIPI op_xor(ZIPIMM imm, ZIPREG b, ZIPREG a) const
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{ return op_xor(ZIPC_ALWAYS, imm, b, a); }
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ZIPI op_xor(ZIPIMM imm, ZIPREG a) const
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{ return op_xor(ZIPC_ALWAYS, imm, a); }
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ZIPI op_lsl(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const;
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ZIPI op_lsl(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const;
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ZIPI op_lsl(ZIPIMM imm, ZIPREG b, ZIPREG a) const
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{ return op_lsl(ZIPC_ALWAYS, imm, b, a); }
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ZIPI op_lsl(ZIPIMM imm, ZIPREG a) const
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{ return op_lsl(ZIPC_ALWAYS, imm, a); }
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ZIPI op_asl(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const
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{ return op_lsl(cnd, imm, b, a); }
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ZIPI op_asl(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const
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{ return op_lsl(cnd, imm, a); }
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ZIPI op_asl(ZIPIMM imm, ZIPREG b, ZIPREG a) const
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{ return op_lsl(ZIPC_ALWAYS, imm, b, a); }
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ZIPI op_asl(ZIPIMM imm, ZIPREG a) const
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{ return op_lsl(ZIPC_ALWAYS, imm, a); }
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ZIPI op_asr(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const;
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ZIPI op_asr(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const;
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ZIPI op_asr(ZIPIMM imm, ZIPREG b, ZIPREG a) const
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{ return op_asr(ZIPC_ALWAYS, imm, b, a); }
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ZIPI op_asr(ZIPIMM imm, ZIPREG a) const
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{ return op_asr(ZIPC_ALWAYS, imm, a); }
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ZIPI op_lsr(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const;
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ZIPI op_lsr(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const;
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ZIPI op_lsr(ZIPIMM imm, ZIPREG b, ZIPREG a) const
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{ return op_lsr(ZIPC_ALWAYS, imm, b, a); }
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ZIPI op_lsr(ZIPIMM imm, ZIPREG a) const
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{ return op_lsr(ZIPC_ALWAYS, imm, a); }
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ZIPI op_bra(ZIPCOND cnd, ZIPIMM imm) const
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{ return op_mov(cnd, imm, ZIP_PC, ZIP_PC); }
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ZIPI op_bra(ZIPIMM imm) const
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{ return op_mov(ZIPC_ALWAYS, imm, ZIP_PC, ZIP_PC); }
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ZIPI op_brz(ZIPIMM imm) const
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{ return op_mov(ZIPC_Z, imm, ZIP_PC, ZIP_PC); }
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ZIPI op_bnz(ZIPIMM imm) const
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{ return op_mov(ZIPC_NZ, imm, ZIP_PC, ZIP_PC); }
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ZIPI op_bge(ZIPIMM imm) const
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{ return op_mov(ZIPC_GE, imm, ZIP_PC, ZIP_PC); }
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ZIPI op_bgt(ZIPIMM imm) const
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{ return op_mov(ZIPC_GT, imm, ZIP_PC, ZIP_PC); }
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ZIPI op_blt(ZIPIMM imm) const
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{ return op_mov(ZIPC_LT, imm, ZIP_PC, ZIP_PC); }
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ZIPI op_brc(ZIPIMM imm) const
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{ return op_mov(ZIPC_C, imm, ZIP_PC, ZIP_PC); }
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ZIPI op_brv(ZIPIMM imm) const
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{ return op_mov(ZIPC_V, imm, ZIP_PC, ZIP_PC); }
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ZIPI op_bv(ZIPIMM imm) const
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{ return op_brv(imm); }
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ZIPI op_clrf(ZIPCOND cnd, ZIPREG a) const
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{ return op_xor(cnd, 0, a, a); }
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ZIPI op_clrf(ZIPREG a) const
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{ return op_xor(ZIPC_ALWAYS, 0, a, a); }
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ZIPI op_halt(ZIPCOND c) const {
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return op_or(c, 0x10, ZIP_CC); }
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ZIPI op_wait(ZIPCOND c) const {
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return op_or(c, 0x10, ZIP_CC); }
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ZIPI op_halt(void) const {
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return op_or(ZIPC_ALWAYS, 0x10, ZIP_CC); }
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ZIPI op_wait(void) const {
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return op_or(ZIPC_ALWAYS, 0x10, ZIP_CC); }
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ZIPI op_busy(ZIPCOND c) const {
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return op_mov(c, -1, ZIP_PC, ZIP_PC); }
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ZIPI op_busy(void) const {
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return op_mov(ZIPC_ALWAYS, -1, ZIP_PC, ZIP_PC); }
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ZIPI op_rtu(void) const {
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return op_or(ZIPC_ALWAYS, 0x20, ZIP_CC); }
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ZIPI op_rtu(ZIPCOND cnd) const {
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return op_or(cnd, 0x20, ZIP_CC); }
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ZIPI op_jmp(ZIPCOND c, ZIPIMM imm, ZIPREG r) const
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{ return op_mov(ZIPC_ALWAYS, imm, r, ZIP_PC); }
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ZIPI op_ljmp(ZIPCOND c, ZIPIMM imm) const {
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return op_add(ZIPC_ALWAYS, imm, ZIP_PC); }
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ZIPI op_not(ZIPCOND c, ZIPREG r) const
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{ return op_xor(c, -1, r); }
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ZIPI op_not(ZIPREG r) const
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{ return op_xor(ZIPC_ALWAYS, -1, r); }
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};
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#endif
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