OpenCores
URL https://opencores.org/ocsvn/zipcpu/zipcpu/trunk

Subversion Repositories zipcpu

[/] [zipcpu/] [trunk/] [sw/] [zasm/] [zparser.cpp] - Blame information for rev 27

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 2 dgisselq 
////////////////////////////////////////////////////////////////////////////////
2 
//
3 
// Filename:    zparser.cpp
4 
//
5 
// Project:     Zip CPU -- a small, lightweight, RISC CPU core
6 
//
7 13 dgisselq 
// Purpose:     This file is really mis-named.  At one time it was going to
8 
//              be the parser for the Zip Assembler, zasm.  Since then, I
9 
//              discovered Flex and Bison and have written a parser using
10 
//              those tools.  The true parser may therefore be found in zasm.y.
11 
//              This file, however, still contains some very valuable tools.
12 
//              In particular, all of the routines used to build instructions
13 
//              from the appropriate fields are kept in this file.  For example,
14 
//              op_noop() returns the instruction code for a NOOP  instruction.
15 2 dgisselq 
//
16 
// Creator:     Dan Gisselquist, Ph.D.
17 
//              Gisselquist Tecnology, LLC
18 
//
19 
////////////////////////////////////////////////////////////////////////////////
20 
//
21 
// Copyright (C) 2015, Gisselquist Technology, LLC
22 
//
23 
// This program is free software (firmware): you can redistribute it and/or
24 
// modify it under the terms of  the GNU General Public License as published
25 
// by the Free Software Foundation, either version 3 of the License, or (at
26 
// your option) any later version.
27 
//
28 
// This program is distributed in the hope that it will be useful, but WITHOUT
29 
// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
30 
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
31 
// for more details.
32 
//
33 
// You should have received a copy of the GNU General Public License along
34 
// with this program.  (It's in the $(ROOT)/doc directory, run make with no
35 
// target there if the PDF file isn't present.)  If not, see
36 
// <http://www.gnu.org/licenses/> for a copy.
37 
//
38 
// License:     GPL, v3, as defined and found on www.gnu.org,
39 
//              http://www.gnu.org/licenses/gpl.html
40 
//
41 
//
42 
////////////////////////////////////////////////////////////////////////////////
43 
 
44 
#include <stdio.h>
45 
#include <stdlib.h>
46 
#include <string.h>
47 
#include <ctype.h>
48 
#include <strings.h>
49 
 
50 
#include "zparser.h"
51 
#include "zopcodes.h"
52 
 
53 
typedef ZPARSER::ZIPI ZIPI;     // A Zip Instruction (i.e. uint32)
54 
 
55 
#define IMMOP(OP,CND,IMM,A) (((OP&0x0f)<<28)|((A&0x0f)<<24)|((CND&0x07)<<21) \
56 
                        | (IMM & 0x0fffff))
57 
 
58 
#define DBLREGOP(OP,CND,IMM,B,A) (((OP&0x0f)<<28)|((A&0x0f)<<24)        \
59 
                        |((CND&0x07)<<21)|(1<<20)|((B&0x0f)<<16)         \
60 
                        | (IMM & 0x0ffff))
61 
 
62 
ZIPI    ZPARSER::op_cmp(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
63 
        return DBLREGOP(0x0, cnd, imm, b, a);
64 
}
65 
 
66 
ZIPI    ZPARSER::op_cmp(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
67 
        return IMMOP(0x0, cnd, imm, a);
68 
}
69 
 
70 
 
71 
ZIPI    ZPARSER::op_tst(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
72 
        return DBLREGOP(0x1, cnd, imm, b, a);
73 
} ZIPI  ZPARSER::op_tst(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
74 
        return IMMOP(0x1, cnd, imm, a);
75 
}
76 
 
77 
ZIPI    ZPARSER::op_mov(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
78 
        ZIPI    in;
79 
        in = (0x02 << 28)|((a&0x0f)<<24)|((cnd&0x07)<<21);
80 
        in |= (a&0x10)<<16;
81 
        in |= (b&0x0f)<<16;
82 
        in |= (b&0x10)<<11;
83 
        in |= imm & 0x07fff;
84 
        return in;
85 
}
86 
 
87 
 
88 
ZIPI    ZPARSER::op_ldi(ZIPIMM imm, ZIPREG a) const {
89 
        ZIPI    in;
90 
        in = ((0x03)<<28) | ((a&0x0f)<<24) | (imm & ((1<<24)-1));
91 
        return in;
92 
}
93 
 
94 
ZIPI    ZPARSER::op_trap(ZIPCOND cnd, ZIPIMM imm) const {
95 
        ZIPI    in;
96 13 dgisselq 
        if (cnd != ZIPC_ALWAYS)
97 
                return op_ldilo(cnd, imm, ZIP_CC);
98 
        else
99 
                return op_ldi(imm, ZIP_CC);
100 
        // in  = ((0x4f)<<24)|((cnd&0x07)<<21)|(1<<20)|((0x0e)<<16);
101 
        // in |= (imm & 0x0ffff);
102 2 dgisselq 
        return in;
103 
}
104 
 
105 
ZIPI    ZPARSER::op_noop(void) const {
106 
        return 0x4e000000;
107 
}
108 
ZIPI    ZPARSER::op_break(void) const {
109 
        return 0x4e000001;
110 
}
111 
 
112 
ZIPI    ZPARSER::op_ldihi(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
113 
        ZIPI    in;
114 
        in  = ((0x4f)<<24)|((cnd&0x07)<<21)|(1<<20)|((a&0x0f)<<16);
115 
        in |= (imm & 0x0ffff);
116 
        return in;
117 
}
118 
ZIPI    ZPARSER::op_ldilo(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
119 
        ZIPI    in;
120 
        in  = ((0x4f)<<24)|((cnd&0x07)<<21)|(0<<20)|((a&0x0f)<<16);
121 
        in |= (imm & 0x0ffff);
122 
        return in;
123 
}
124 
 
125 26 dgisselq 
ZIPI    ZPARSER::op_mpyu(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
126 
        return (0x04<<28)|((a&0x0f)<<24)|((cnd&0x7)<<21)|(0<<20)|((b&0x0f)<<16)|(imm & 0x0ffff);
127 
} ZIPI  ZPARSER::op_mpyu(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
128 
        return (0x04<<28)|((a&0x0f)<<24)|((cnd&0x7)<<21)|(0<<20)|((0x0f)<<16)|(imm & 0x0ffff);
129 8 dgisselq 
}
130 
 
131 26 dgisselq 
ZIPI    ZPARSER::op_mpys(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
132 
        return (0x04<<28)|((a&0x0f)<<24)|((cnd&0x7)<<21)|(1<<20)|((b&0x0f)<<16)|(imm & 0x0ffff);
133 
} ZIPI  ZPARSER::op_mpys(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
134 
        return (0x04<<28)|((a&0x0f)<<24)|((cnd&0x7)<<21)|(1<<20)|((0x0f)<<16)|(imm & 0x0ffff);
135 
}
136 
 
137 8 dgisselq 
ZIPI    ZPARSER::op_rol(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
138 
        return DBLREGOP(0x5, cnd, imm, b, a);
139 
} ZIPI  ZPARSER::op_rol(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
140 
        return IMMOP(0x5, cnd, imm, a);
141 
}
142 
 
143 2 dgisselq 
ZIPI    ZPARSER::op_lod(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
144 
        return DBLREGOP(0x6, cnd, imm, b, a);
145 8 dgisselq 
} ZIPI  ZPARSER::op_lod(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
146 2 dgisselq 
        return IMMOP(0x6, cnd, imm, a);
147 
}
148 
 
149 
 
150 
ZIPI    ZPARSER::op_sto(ZIPCOND cnd, ZIPREG v, ZIPIMM imm, ZIPREG b) const {
151 
        return DBLREGOP(0x7, cnd, imm, b, v);
152 
} ZIPI  ZPARSER::op_sto(ZIPCOND cnd, ZIPREG v, ZIPIMM imm) const {
153 
        return IMMOP(0x7, cnd, imm, v);
154 
}
155 
 
156 
 
157 
ZIPI    ZPARSER::op_sub(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
158 
        return DBLREGOP(0x8, cnd, imm, b, a);
159 
} ZIPI  ZPARSER::op_sub(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
160 26 dgisselq 
        // While it seems like we might do well replacing a subtract immediate
161 
        // with an add of the negative same, the conditions aren't the same
162 
        // when doing so.  Hence this is an invalid substitution.
163 
        // return IMMOP(0xa, cnd, -imm, a); // Do an add of the negative of imm
164 2 dgisselq 
        return IMMOP(0x8, cnd, imm, a);
165 
}
166 
 
167 
 
168 
ZIPI    ZPARSER::op_and(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
169 
        return DBLREGOP(0x9, cnd, imm, b, a);
170 
} ZIPI  ZPARSER::op_and(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
171 
        return IMMOP(0x9, cnd, imm, a);
172 
}
173 
 
174 
 
175 
ZIPI    ZPARSER::op_add(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
176 
        return DBLREGOP(0xa, cnd, imm, b, a);
177 
} ZIPI  ZPARSER::op_add(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
178 
        return IMMOP(0xa, cnd, imm, a);
179 
}
180 
 
181 
 
182 
ZIPI    ZPARSER::op_or(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
183 
        return DBLREGOP(0xb, cnd, imm, b, a);
184 
} ZIPI  ZPARSER::op_or(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
185 
        return IMMOP(0xb, cnd, imm, a);
186 
}
187 
 
188 
ZIPI    ZPARSER::op_xor(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
189 
        return DBLREGOP(0xc, cnd, imm, b, a);
190 
} ZIPI  ZPARSER::op_xor(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
191 
        return IMMOP(0xc, cnd, imm, a);
192 
}
193 
 
194 
ZIPI    ZPARSER::op_lsl(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
195 
        return DBLREGOP(0xd, cnd, imm, b, a);
196 
} ZIPI  ZPARSER::op_lsl(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
197 
        return IMMOP(0xd, cnd, imm, a);
198 
}
199 
 
200 
ZIPI    ZPARSER::op_asr(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
201 
        return DBLREGOP(0xe, cnd, imm, b, a);
202 
} ZIPI  ZPARSER::op_asr(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
203 
        return IMMOP(0xe, cnd, imm, a);
204 
}
205 
 
206 
ZIPI    ZPARSER::op_lsr(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
207 
        return DBLREGOP(0xf, cnd, imm, b, a);
208 
} ZIPI  ZPARSER::op_lsr(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
209 
        return IMMOP(0xf, cnd, imm, a);
210 
}
211 
 

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.