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bfd/
[binutils.git] / opcodes / or32-opc.c
blob059bf20bb5bd173ecf3f6ffe8a0bad307a6a1ef2
1 /* Table of opcodes for the OpenRISC 1000 ISA.
2 Copyright 2002, 2004, 2005 Free Software Foundation, Inc.
3 Contributed by Damjan Lampret (lampret@opencores.org).
4
5 This file is part of gen_or1k_isa, or1k, GDB and GAS.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
22 /* We treat all letters the same in encode/decode routines so
23 we need to assign some characteristics to them like signess etc. */
24 #include <string.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include "safe-ctype.h"
28 #include "ansidecl.h"
29 #ifdef HAVE_CONFIG_H
30 # include "config.h"
31 #endif
32 #include "opcode/or32.h"
33
34 const struct or32_letter or32_letters[] =
35 {
36 { 'A', NUM_UNSIGNED },
37 { 'B', NUM_UNSIGNED },
38 { 'D', NUM_UNSIGNED },
39 { 'I', NUM_SIGNED },
40 { 'K', NUM_UNSIGNED },
41 { 'L', NUM_UNSIGNED },
42 { 'N', NUM_SIGNED },
43 { '0', NUM_UNSIGNED },
44 { '\0', 0 } /* Dummy entry. */
45 };
46
47 /* Opcode encoding:
48 machine[31:30]: first two bits of opcode
49 00 - neither of source operands is GPR
50 01 - second source operand is GPR (rB)
51 10 - first source operand is GPR (rA)
52 11 - both source operands are GPRs (rA and rB)
53 machine[29:26]: next four bits of opcode
54 machine[25:00]: instruction operands (specific to individual instruction)
55
56 Recommendation: irrelevant instruction bits should be set with a value of
57 bits in same positions of instruction preceding current instruction in the
58 code (when assembling). */
59
60 #define EFN &l_none
61
62 #ifdef HAS_EXECUTION
63 #define EF(func) &(func)
64 #define EFI &l_invalid
65 #else /* HAS_EXECUTION */
66 #define EF(func) EFN
67 #define EFI EFN
68 #endif /* HAS_EXECUTION */
69
70 const struct or32_opcode or32_opcodes[] =
71 {
72 { "l.j", "N", "00 0x0 NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_j), OR32_IF_DELAY },
73 { "l.jal", "N", "00 0x1 NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_jal), OR32_IF_DELAY },
74 { "l.bnf", "N", "00 0x3 NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_bnf), OR32_IF_DELAY | OR32_R_FLAG},
75 { "l.bf", "N", "00 0x4 NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_bf), OR32_IF_DELAY | OR32_R_FLAG },
76 { "l.nop", "K", "00 0x5 01--- ----- KKKK KKKK KKKK KKKK", EF(l_nop), 0 },
77 { "l.movhi", "rD,K", "00 0x6 DDDDD ----0 KKKK KKKK KKKK KKKK", EF(l_movhi), 0 }, /*MM*/
78 { "l.macrc", "rD", "00 0x6 DDDDD ----1 0000 0000 0000 0000", EF(l_macrc), 0 }, /*MM*/
79
80 { "l.sys", "K", "00 0x8 00000 00000 KKKK KKKK KKKK KKKK", EF(l_sys), 0 },
81 { "l.trap", "K", "00 0x8 01000 00000 KKKK KKKK KKKK KKKK", EF(l_trap), 0 }, /* CZ 21/06/01 */
82 { "l.msync", "", "00 0x8 10000 00000 0000 0000 0000 0000", EFN, 0 },
83 { "l.psync", "", "00 0x8 10100 00000 0000 0000 0000 0000", EFN, 0 },
84 { "l.csync", "", "00 0x8 11000 00000 0000 0000 0000 0000", EFN, 0 },
85 { "l.rfe", "", "00 0x9 ----- ----- ---- ---- ---- ----", EF(l_rfe), OR32_IF_DELAY },
86
87 { "lv.all_eq.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x0", EFI, 0 },
88 { "lv.all_eq.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x1", EFI, 0 },
89 { "lv.all_ge.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x2", EFI, 0 },
90 { "lv.all_ge.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x3", EFI, 0 },
91 { "lv.all_gt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x4", EFI, 0 },
92 { "lv.all_gt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x5", EFI, 0 },
93 { "lv.all_le.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x6", EFI, 0 },
94 { "lv.all_le.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x7", EFI, 0 },
95 { "lv.all_lt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x8", EFI, 0 },
96 { "lv.all_lt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x9", EFI, 0 },
97 { "lv.all_ne.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0xA", EFI, 0 },
98 { "lv.all_ne.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0xB", EFI, 0 },
99 { "lv.any_eq.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x0", EFI, 0 },
100 { "lv.any_eq.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x1", EFI, 0 },
101 { "lv.any_ge.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x2", EFI, 0 },
102 { "lv.any_ge.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x3", EFI, 0 },
103 { "lv.any_gt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x4", EFI, 0 },
104 { "lv.any_gt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x5", EFI, 0 },
105 { "lv.any_le.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x6", EFI, 0 },
106 { "lv.any_le.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x7", EFI, 0 },
107 { "lv.any_lt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x8", EFI, 0 },
108 { "lv.any_lt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x9", EFI, 0 },
109 { "lv.any_ne.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0xA", EFI, 0 },
110 { "lv.any_ne.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0xB", EFI, 0 },
111 { "lv.add.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x0", EFI, 0 },
112 { "lv.add.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x1", EFI, 0 },
113 { "lv.adds.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x2", EFI, 0 },
114 { "lv.adds.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x3", EFI, 0 },
115 { "lv.addu.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x4", EFI, 0 },
116 { "lv.addu.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x5", EFI, 0 },
117 { "lv.addus.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x6", EFI, 0 },
118 { "lv.addus.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x7", EFI, 0 },
119 { "lv.and", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x8", EFI, 0 },
120 { "lv.avg.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x9", EFI, 0 },
121 { "lv.avg.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0xA", EFI, 0 },
122 { "lv.cmp_eq.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x0", EFI, 0 },
123 { "lv.cmp_eq.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x1", EFI, 0 },
124 { "lv.cmp_ge.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x2", EFI, 0 },
125 { "lv.cmp_ge.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x3", EFI, 0 },
126 { "lv.cmp_gt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x4", EFI, 0 },
127 { "lv.cmp_gt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x5", EFI, 0 },
128 { "lv.cmp_le.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x6", EFI, 0 },
129 { "lv.cmp_le.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x7", EFI, 0 },
130 { "lv.cmp_lt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x8", EFI, 0 },
131 { "lv.cmp_lt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x9", EFI, 0 },
132 { "lv.cmp_ne.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0xA", EFI, 0 },
133 { "lv.cmp_ne.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0xB", EFI, 0 },
134 { "lv.madds.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x4", EFI, 0 },
135 { "lv.max.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x5", EFI, 0 },
136 { "lv.max.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x6", EFI, 0 },
137 { "lv.merge.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x7", EFI, 0 },
138 { "lv.merge.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x8", EFI, 0 },
139 { "lv.min.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x9", EFI, 0 },
140 { "lv.min.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xA", EFI, 0 },
141 { "lv.msubs.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xB", EFI, 0 },
142 { "lv.muls.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xC", EFI, 0 },
143 { "lv.nand", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xD", EFI, 0 },
144 { "lv.nor", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xE", EFI, 0 },
145 { "lv.or", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xF", EFI, 0 },
146 { "lv.pack.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x0", EFI, 0 },
147 { "lv.pack.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x1", EFI, 0 },
148 { "lv.packs.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x2", EFI, 0 },
149 { "lv.packs.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x3", EFI, 0 },
150 { "lv.packus.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x4", EFI, 0 },
151 { "lv.packus.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x5", EFI, 0 },
152 { "lv.perm.n", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x6", EFI, 0 },
153 { "lv.rl.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x7", EFI, 0 },
154 { "lv.rl.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x8", EFI, 0 },
155 { "lv.sll.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x9", EFI, 0 },
156 { "lv.sll.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xA", EFI, 0 },
157 { "lv.sll", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xB", EFI, 0 },
158 { "lv.srl.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xC", EFI, 0 },
159 { "lv.srl.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xD", EFI, 0 },
160 { "lv.sra.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xE", EFI, 0 },
161 { "lv.sra.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xF", EFI, 0 },
162 { "lv.srl", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x0", EFI, 0 },
163 { "lv.sub.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x1", EFI, 0 },
164 { "lv.sub.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x2", EFI, 0 },
165 { "lv.subs.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x3", EFI, 0 },
166 { "lv.subs.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x4", EFI, 0 },
167 { "lv.subu.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x5", EFI, 0 },
168 { "lv.subu.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x6", EFI, 0 },
169 { "lv.subus.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x7", EFI, 0 },
170 { "lv.subus.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x8", EFI, 0 },
171 { "lv.unpack.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x9", EFI, 0 },
172 { "lv.unpack.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0xA", EFI, 0 },
173 { "lv.xor", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0xB", EFI, 0 },
174 { "lv.cust1", "", "00 0xA ----- ----- ---- ---- 0xC ----", EFI, 0 },
175 { "lv.cust2", "", "00 0xA ----- ----- ---- ---- 0xD ----", EFI, 0 },
176 { "lv.cust3", "", "00 0xA ----- ----- ---- ---- 0xE ----", EFI, 0 },
177 { "lv.cust4", "", "00 0xA ----- ----- ---- ---- 0xF ----", EFI, 0 },
178
179 { "lf.add.s", "rD,rA,rB", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x0", EFI, 0 },
180 { "lf.sub.s", "rD,rA,rB", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x1", EFI, 0 },
181 { "lf.mul.s", "rD,rA,rB", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x2", EFI, 0 },
182 { "lf.div.s", "rD,rA,rB", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x3", EFI, 0 },
183 { "lf.itof.s", "rD,rA", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x4", EFI, 0 },
184 { "lf.ftoi.s", "rD,rA", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x5", EFI, 0 },
185 { "lf.rem.s", "rD,rA,rB", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x6", EFI, 0 },
186 { "lf.madd.s", "rD,rA,rB", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x7", EFI, 0 },
187 { "lf.sfeq.s", "rA,rB", "00 0xB ----- AAAAA BBBB B--- 0x1 0x8", EFI, 0 },
188 { "lf.sfne.s", "rA,rB", "00 0xB ----- AAAAA BBBB B--- 0x1 0x9", EFI, 0 },
189 { "lf.sfgt.s", "rA,rB", "00 0xB ----- AAAAA BBBB B--- 0x1 0xA", EFI, 0 },
190 { "lf.sfge.s", "rA,rB", "00 0xB ----- AAAAA BBBB B--- 0x1 0xB", EFI, 0 },
191 { "lf.sflt.s", "rA,rB", "00 0xB ----- AAAAA BBBB B--- 0x1 0xC", EFI, 0 },
192 { "lf.sfle.s", "rA,rB", "00 0xB ----- AAAAA BBBB B--- 0x1 0xD", EFI, 0 },
193 { "lf.cust1.s", "", "00 0xB ----- ----- ---- ---- 0xE ----", EFI, 0 },
194
195 { "lf.add.d", "rD,rA,rB", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x0", EFI, 0 },
196 { "lf.sub.d", "rD,rA,rB", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x1", EFI, 0 },
197 { "lf.mul.d", "rD,rA,rB", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x2", EFI, 0 },
198 { "lf.div.d", "rD,rA,rB", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x3", EFI, 0 },
199 { "lf.itof.d", "rD,rA", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x4", EFI, 0 },
200 { "lf.ftoi.d", "rD,rA", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x5", EFI, 0 },
201 { "lf.rem.d", "rD,rA,rB", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x6", EFI, 0 },
202 { "lf.madd.d", "rD,rA,rB", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x7", EFI, 0 },
203 { "lf.sfeq.d", "rA,rB", "00 0xC ----- AAAAA BBBB B--- 0x1 0x8", EFI, 0 },
204 { "lf.sfne.d", "rA,rB", "00 0xC ----- AAAAA BBBB B--- 0x1 0x9", EFI, 0 },
205 { "lf.sfgt.d", "rA,rB", "00 0xC ----- AAAAA BBBB B--- 0x1 0xA", EFI, 0 },
206 { "lf.sfge.d", "rA,rB", "00 0xC ----- AAAAA BBBB B--- 0x1 0xB", EFI, 0 },
207 { "lf.sflt.d", "rA,rB", "00 0xC ----- AAAAA BBBB B--- 0x1 0xC", EFI, 0 },
208 { "lf.sfle.d", "rA,rB", "00 0xC ----- AAAAA BBBB B--- 0x1 0xD", EFI, 0 },
209 { "lf.cust1.d", "", "00 0xC ----- ----- ---- ---- 0xE ----", EFI, 0 },
210
211 { "lvf.ld", "rD,0(rA)", "00 0xD DDDDD AAAAA ---- ---- 0x0 0x0", EFI, 0 },
212 { "lvf.lw", "rD,0(rA)", "00 0xD DDDDD AAAAA ---- ---- 0x0 0x1", EFI, 0 },
213 { "lvf.sd", "0(rA),rB", "00 0xD ----- AAAAA BBBB B--- 0x1 0x0", EFI, 0 },
214 { "lvf.sw", "0(rA),rB", "00 0xD ----- AAAAA BBBB B--- 0x1 0x1", EFI, 0 },
215
216 { "l.jr", "rB", "01 0x1 ----- ----- BBBB B--- ---- ----", EF(l_jr), OR32_IF_DELAY },
217 { "l.jalr", "rB", "01 0x2 ----- ----- BBBB B--- ---- ----", EF(l_jalr), OR32_IF_DELAY },
218 { "l.maci", "rB,I", "01 0x3 IIIII ----- BBBB BIII IIII IIII", EF(l_mac), 0 },
219 { "l.cust1", "", "01 0xC ----- ----- ---- ---- ---- ----", EF(l_cust1), 0 },
220 { "l.cust2", "", "01 0xD ----- ----- ---- ---- ---- ----", EF(l_cust2), 0 },
221 { "l.cust3", "", "01 0xE ----- ----- ---- ---- ---- ----", EF(l_cust3), 0 },
222 { "l.cust4", "", "01 0xF ----- ----- ---- ---- ---- ----", EF(l_cust4), 0 },
223
224 { "l.ld", "rD,I(rA)", "10 0x0 DDDDD AAAAA IIII IIII IIII IIII", EFI, 0 },
225 { "l.lwz", "rD,I(rA)", "10 0x1 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lwz), 0 },
226 { "l.lws", "rD,I(rA)", "10 0x2 DDDDD AAAAA IIII IIII IIII IIII", EFI, 0 },
227 { "l.lbz", "rD,I(rA)", "10 0x3 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lbz), 0 },
228 { "l.lbs", "rD,I(rA)", "10 0x4 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lbs), 0 },
229 { "l.lhz", "rD,I(rA)", "10 0x5 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lhz), 0 },
230 { "l.lhs", "rD,I(rA)", "10 0x6 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lhs), 0 },
231
232 { "l.addi", "rD,rA,I", "10 0x7 DDDDD AAAAA IIII IIII IIII IIII", EF(l_add), 0 },
233 { "l.addic", "rD,rA,I", "10 0x8 DDDDD AAAAA IIII IIII IIII IIII", EFI, 0 },
234 { "l.andi", "rD,rA,K", "10 0x9 DDDDD AAAAA KKKK KKKK KKKK KKKK", EF(l_and), 0 },
235 { "l.ori", "rD,rA,K", "10 0xA DDDDD AAAAA KKKK KKKK KKKK KKKK", EF(l_or), 0 },
236 { "l.xori", "rD,rA,I", "10 0xB DDDDD AAAAA IIII IIII IIII IIII", EF(l_xor), 0 },
237 { "l.muli", "rD,rA,I", "10 0xC DDDDD AAAAA IIII IIII IIII IIII", EFI, 0 },
238 { "l.mfspr", "rD,rA,K", "10 0xD DDDDD AAAAA KKKK KKKK KKKK KKKK", EF(l_mfspr), 0 },
239 { "l.slli", "rD,rA,L", "10 0xE DDDDD AAAAA ---- ---- 00LL LLLL", EF(l_sll), 0 },
240 { "l.srli", "rD,rA,L", "10 0xE DDDDD AAAAA ---- ---- 01LL LLLL", EF(l_srl), 0 },
241 { "l.srai", "rD,rA,L", "10 0xE DDDDD AAAAA ---- ---- 10LL LLLL", EF(l_sra), 0 },
242 { "l.rori", "rD,rA,L", "10 0xE DDDDD AAAAA ---- ---- 11LL LLLL", EFI, 0 },
243
244 { "l.sfeqi", "rA,I", "10 0xF 00000 AAAAA IIII IIII IIII IIII", EF(l_sfeq), OR32_W_FLAG },
245 { "l.sfnei", "rA,I", "10 0xF 00001 AAAAA IIII IIII IIII IIII", EF(l_sfne), OR32_W_FLAG },
246 { "l.sfgtui", "rA,I", "10 0xF 00010 AAAAA IIII IIII IIII IIII", EF(l_sfgtu), OR32_W_FLAG },
247 { "l.sfgeui", "rA,I", "10 0xF 00011 AAAAA IIII IIII IIII IIII", EF(l_sfgeu), OR32_W_FLAG },
248 { "l.sfltui", "rA,I", "10 0xF 00100 AAAAA IIII IIII IIII IIII", EF(l_sfltu), OR32_W_FLAG },
249 { "l.sfleui", "rA,I", "10 0xF 00101 AAAAA IIII IIII IIII IIII", EF(l_sfleu), OR32_W_FLAG },
250 { "l.sfgtsi", "rA,I", "10 0xF 01010 AAAAA IIII IIII IIII IIII", EF(l_sfgts), OR32_W_FLAG },
251 { "l.sfgesi", "rA,I", "10 0xF 01011 AAAAA IIII IIII IIII IIII", EF(l_sfges), OR32_W_FLAG },
252 { "l.sfltsi", "rA,I", "10 0xF 01100 AAAAA IIII IIII IIII IIII", EF(l_sflts), OR32_W_FLAG },
253 { "l.sflesi", "rA,I", "10 0xF 01101 AAAAA IIII IIII IIII IIII", EF(l_sfles), OR32_W_FLAG },
254
255 { "l.mtspr", "rA,rB,K", "11 0x0 KKKKK AAAAA BBBB BKKK KKKK KKKK", EF(l_mtspr), 0 },
256 { "l.mac", "rA,rB", "11 0x1 ----- AAAAA BBBB B--- ---- 0x1", EF(l_mac), 0 }, /*MM*/
257 { "l.msb", "rA,rB", "11 0x1 ----- AAAAA BBBB B--- ---- 0x2", EF(l_msb), 0 }, /*MM*/
258
259 { "l.sd", "I(rA),rB", "11 0x4 IIIII AAAAA BBBB BIII IIII IIII", EFI, 0 },
260 { "l.sw", "I(rA),rB", "11 0x5 IIIII AAAAA BBBB BIII IIII IIII", EF(l_sw), 0 },
261 { "l.sb", "I(rA),rB", "11 0x6 IIIII AAAAA BBBB BIII IIII IIII", EF(l_sb), 0 },
262 { "l.sh", "I(rA),rB", "11 0x7 IIIII AAAAA BBBB BIII IIII IIII", EF(l_sh), 0 },
263
264 { "l.add", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x0", EF(l_add), 0 },
265 { "l.addc", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x1", EFI, 0 },
266 { "l.sub", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x2", EF(l_sub), 0 },
267 { "l.and", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x3", EF(l_and), 0 },
268 { "l.or", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x4", EF(l_or), 0 },
269 { "l.xor", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x5", EF(l_xor), 0 },
270 { "l.mul", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-11 ---- 0x6", EF(l_mul), 0 },
271
272 { "l.sll", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 00-- 0x8", EF(l_sll), 0 },
273 { "l.srl", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 01-- 0x8", EF(l_srl), 0 },
274 { "l.sra", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 10-- 0x8", EF(l_sra), 0 },
275 { "l.ror", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 11-- 0x8", EFI, 0 },
276 { "l.div", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x9", EF(l_div), 0 },
277 { "l.divu", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0xA", EF(l_divu), 0 },
278 { "l.mulu", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-11 ---- 0xB", EFI, 0 },
279 { "l.exths", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 00-- 0xC", EFI, 0 },
280 { "l.extbs", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 01-- 0xC", EFI, 0 },
281 { "l.exthz", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 10-- 0xC", EFI, 0 },
282 { "l.extbz", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 11-- 0xC", EFI, 0 },
283 { "l.extws", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 00-- 0xD", EFI, 0 },
284 { "l.extwz", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 01-- 0xD", EFI, 0 },
285 { "l.cmov", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0xE", EFI, 0 },
286 { "l.ff1", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0xF", EFI, 0 },
287
288 { "l.sfeq", "rA,rB", "11 0x9 00000 AAAAA BBBB B--- ---- ----", EF(l_sfeq), OR32_W_FLAG },
289 { "l.sfne", "rA,rB", "11 0x9 00001 AAAAA BBBB B--- ---- ----", EF(l_sfne), OR32_W_FLAG },
290 { "l.sfgtu", "rA,rB", "11 0x9 00010 AAAAA BBBB B--- ---- ----", EF(l_sfgtu), OR32_W_FLAG },
291 { "l.sfgeu", "rA,rB", "11 0x9 00011 AAAAA BBBB B--- ---- ----", EF(l_sfgeu), OR32_W_FLAG },
292 { "l.sfltu", "rA,rB", "11 0x9 00100 AAAAA BBBB B--- ---- ----", EF(l_sfltu), OR32_W_FLAG },
293 { "l.sfleu", "rA,rB", "11 0x9 00101 AAAAA BBBB B--- ---- ----", EF(l_sfleu), OR32_W_FLAG },
294 { "l.sfgts", "rA,rB", "11 0x9 01010 AAAAA BBBB B--- ---- ----", EF(l_sfgts), OR32_W_FLAG },
295 { "l.sfges", "rA,rB", "11 0x9 01011 AAAAA BBBB B--- ---- ----", EF(l_sfges), OR32_W_FLAG },
296 { "l.sflts", "rA,rB", "11 0x9 01100 AAAAA BBBB B--- ---- ----", EF(l_sflts), OR32_W_FLAG },
297 { "l.sfles", "rA,rB", "11 0x9 01101 AAAAA BBBB B--- ---- ----", EF(l_sfles), OR32_W_FLAG },
298
299 { "l.cust5", "", "11 0xC ----- ----- ---- ---- ---- ----", EFI, 0 },
300 { "l.cust6", "", "11 0xD ----- ----- ---- ---- ---- ----", EFI, 0 },
301 { "l.cust7", "", "11 0xE ----- ----- ---- ---- ---- ----", EFI, 0 },
302 { "l.cust8", "", "11 0xF ----- ----- ---- ---- ---- ----", EFI, 0 },
303
304 /* This section should not be defined in or1ksim, since it contains duplicates,
305 which would cause machine builder to complain. */
306 #ifdef HAS_CUST
307 { "l.cust5_1", "rD", "11 0xC DDDDD ----- ---- ---- ---- ----", EFI, 0 },
308 { "l.cust5_2", "rD,rA" , "11 0xC DDDDD AAAAA ---- ---- ---- ----", EFI, 0 },
309 { "l.cust5_3", "rD,rA,rB", "11 0xC DDDDD AAAAA BBBB B--- ---- ----", EFI, 0 },
310
311 { "l.cust6_1", "rD", "11 0xD DDDDD ----- ---- ---- ---- ----", EFI, 0 },
312 { "l.cust6_2", "rD,rA" , "11 0xD DDDDD AAAAA ---- ---- ---- ----", EFI, 0 },
313 { "l.cust6_3", "rD,rA,rB", "11 0xD DDDDD AAAAA BBBB B--- ---- ----", EFI, 0 },
314
315 { "l.cust7_1", "rD", "11 0xE DDDDD ----- ---- ---- ---- ----", EFI, 0 },
316 { "l.cust7_2", "rD,rA" , "11 0xE DDDDD AAAAA ---- ---- ---- ----", EFI, 0 },
317 { "l.cust7_3", "rD,rA,rB", "11 0xE DDDDD AAAAA BBBB B--- ---- ----", EFI, 0 },
318
319 { "l.cust8_1", "rD", "11 0xF DDDDD ----- ---- ---- ---- ----", EFI, 0 },
320 { "l.cust8_2", "rD,rA" , "11 0xF DDDDD AAAAA ---- ---- ---- ----", EFI, 0 },
321 { "l.cust8_3", "rD,rA,rB", "11 0xF DDDDD AAAAA BBBB B--- ---- ----", EFI, 0 },
322 #endif
323
324 /* Dummy entry, not included in num_opcodes. This
325 lets code examine entry i+1 without checking
326 if we've run off the end of the table. */
327 { "", "", "", EFI, 0 }
328 };
329
330 #undef EFI
331 #undef EFN
332 #undef EF
333
334 /* Define dummy, if debug is not defined. */
335
336 #if !defined HAS_DEBUG
337 static void ATTRIBUTE_PRINTF_2
338 debug (int level ATTRIBUTE_UNUSED, const char *format ATTRIBUTE_UNUSED, ...)
339 {
340 }
341 #endif
342
343 const unsigned int or32_num_opcodes = ((sizeof(or32_opcodes)) / (sizeof(struct or32_opcode))) - 1;
344
345 /* Calculates instruction length in bytes. Always 4 for OR32. */
346
347 int
348 insn_len (int insn_index ATTRIBUTE_UNUSED)
349 {
350 return 4;
351 }
352
353 /* Is individual insn's operand signed or unsigned? */
354
355 int
356 letter_signed (char l)
357 {
358 const struct or32_letter *pletter;
359
360 for (pletter = or32_letters; pletter->letter != '\0'; pletter++)
361 if (pletter->letter == l)
362 return pletter->sign;
363
364 printf ("letter_signed(%c): Unknown letter.\n", l);
365 return 0;
366 }
367
368 /* Number of letters in the individual lettered operand. */
369
370 int
371 letter_range (char l)
372 {
373 const struct or32_opcode *pinsn;
374 char *enc;
375 int range = 0;
376
377 for (pinsn = or32_opcodes; strlen (pinsn->name); pinsn ++)
378 {
379 if (strchr (pinsn->encoding,l))
380 {
381 for (enc = pinsn->encoding; *enc != '\0'; enc ++)
382 if ((*enc == '0') && (*(enc + 1) == 'x'))
383 enc += 2;
384 else if (*enc == l)
385 range++;
386 return range;
387 }
388 }
389
390 printf ("\nABORT: letter_range(%c): Never used letter.\n", l);
391 exit (1);
392 }
393
394 /* MM: Returns index of given instruction name. */
395
396 int
397 insn_index (char *insn)
398 {
399 unsigned int i;
400 int found = -1;
401
402 for (i = 0; i < or32_num_opcodes; i++)
403 if (!strcmp (or32_opcodes[i].name, insn))
404 {
405 found = i;
406 break;
407 }
408 return found;
409 }
410
411 const char *
412 insn_name (int index)
413 {
414 if (index >= 0 && index < (int) or32_num_opcodes)
415 return or32_opcodes[index].name;
416 else
417 return "???";
418 }
419
420 void
421 l_none (void)
422 {
423 }
424
425 /* Finite automata for instruction decoding building code. */
426
427 /* Find simbols in encoding. */
428
429 static unsigned long
430 insn_extract (char param_ch, char *enc_initial)
431 {
432 char *enc;
433 unsigned long ret = 0;
434 unsigned opc_pos = 32;
435
436 for (enc = enc_initial; *enc != '\0'; )
437 if ((*enc == '0') && (*(enc + 1) == 'x'))
438 {
439 unsigned long tmp = strtol (enc+2, NULL, 16);
440
441 opc_pos -= 4;
442 if (param_ch == '0' || param_ch == '1')
443 {
444 if (param_ch == '0')
445 tmp = 15 - tmp;
446 ret |= tmp << opc_pos;
447 }
448 enc += 3;
449 }
450 else
451 {
452 if (*enc == '0' || *enc == '1' || *enc == '-' || ISALPHA (*enc))
453 {
454 opc_pos--;
455 if (param_ch == *enc)
456 ret |= 1 << opc_pos;
457 }
458 enc++;
459 }
460 return ret;
461 }
462
463 #define MAX_AUTOMATA_SIZE 1200
464 #define MAX_OP_TABLE_SIZE 1200
465 #define LEAF_FLAG 0x80000000
466 #define MAX_LEN 8
467
468 #ifndef MIN
469 #define MIN(x, y) ((x) < (y) ? (x) : (y))
470 #endif
471
472 unsigned long *automata;
473 int nuncovered;
474 int curpass = 0;
475
476 /* MM: Struct that hold runtime build information about instructions. */
477 struct temp_insn_struct
478 {
479 unsigned long insn;
480 unsigned long insn_mask;
481 int in_pass;
482 } *ti;
483
484 struct insn_op_struct *op_data, **op_start;
485
486 /* Recursive utility function used to find best match and to build automata. */
487
488 static unsigned long *
489 cover_insn (unsigned long * cur, int pass, unsigned int mask)
490 {
491 int best_first = 0, last_match = -1, ninstr = 0;
492 unsigned int best_len = 0;
493 unsigned int i;
494 unsigned long cur_mask = mask;
495 unsigned long *next;
496
497 for (i = 0; i < or32_num_opcodes; i++)
498 if (ti[i].in_pass == pass)
499 {
500 cur_mask &= ti[i].insn_mask;
501 ninstr++;
502 last_match = i;
503 }
504
505 debug (8, "%08X %08lX\n", mask, cur_mask);
506
507 if (ninstr == 0)
508 return 0;
509
510 if (ninstr == 1)
511 {
512 /* Leaf holds instruction index. */
513 debug (8, "%li>I%i %s\n",
514 (long)(cur - automata), last_match, or32_opcodes[last_match].name);
515
516 *cur = LEAF_FLAG | last_match;
517 cur++;
518 nuncovered--;
519 }
520 else
521 {
522 /* Find longest match. */
523 for (i = 0; i < 32; i++)
524 {
525 unsigned int len;
526
527 for (len = best_len + 1; len < MIN (MAX_LEN, 33 - i); len++)
528 {
529 unsigned long m = (1UL << ((unsigned long) len)) - 1;
530
531 debug (9, " (%i(%08lX & %08lX>>%i = %08lX, %08lX)",
532 len,m, cur_mask, i, (cur_mask >> (unsigned)i),
533 (cur_mask >> (unsigned) i) & m);
534
535 if ((m & (cur_mask >> (unsigned) i)) == m)
536 {
537 best_len = len;
538 best_first = i;
539 debug (9, "!");
540 }
541 else
542 break;
543 }
544 }
545
546 debug (9, "\n");
547
548 if (!best_len)
549 {
550 fprintf (stderr, "%i instructions match mask 0x%08X:\n", ninstr, mask);
551
552 for (i = 0; i < or32_num_opcodes; i++)
553 if (ti[i].in_pass == pass)
554 fprintf (stderr, "%s ", or32_opcodes[i].name);
555
556 fprintf (stderr, "\n");
557 exit (1);
558 }
559
560 debug (8, "%li> #### %i << %i (%i) ####\n",
561 (long)(cur - automata), best_len, best_first, ninstr);
562
563 *cur = best_first;
564 cur++;
565 *cur = (1 << best_len) - 1;
566 cur++;
567 next = cur;
568
569 /* Allocate space for pointers. */
570 cur += 1 << best_len;
571 cur_mask = (1 << (unsigned long) best_len) - 1;
572
573 for (i = 0; i < ((unsigned) 1 << best_len); i++)
574 {
575 unsigned int j;
576 unsigned long *c;
577
578 curpass++;
579 for (j = 0; j < or32_num_opcodes; j++)
580 if (ti[j].in_pass == pass
581 && ((ti[j].insn >> best_first) & cur_mask) == (unsigned long) i
582 && ((ti[j].insn_mask >> best_first) & cur_mask) == cur_mask)
583 ti[j].in_pass = curpass;
584
585 debug (9, "%08X %08lX %i\n", mask, cur_mask, best_first);
586 c = cover_insn (cur, curpass, mask & (~(cur_mask << best_first)));
587 if (c)
588 {
589 debug (8, "%li> #%X -> %lu\n", (long)(next - automata), i, (long)(cur - automata));
590 *next = cur - automata;
591 cur = c;
592 }
593 else
594 {
595 debug (8, "%li> N/A\n", (long)(next - automata));
596 *next = 0;
597 }
598 next++;
599 }
600 }
601 return cur;
602 }
603
604 /* Returns number of nonzero bits. */
605
606 static int
607 num_ones (unsigned long value)
608 {
609 int c = 0;
610
611 while (value)
612 {
613 if (value & 1)
614 c++;
615 value >>= 1;
616 }
617 return c;
618 }
619
620 /* Utility function, which converts parameters from or32_opcode
621 format to more binary form. Parameters are stored in ti struct. */
622
623 static struct insn_op_struct *
624 parse_params (const struct or32_opcode * opcode,
625 struct insn_op_struct * cur)
626 {
627 char *args = opcode->args;
628 int i, type;
629
630 i = 0;
631 type = 0;
632 /* In case we don't have any parameters, we add dummy read from r0. */
633
634 if (!(*args))
635 {
636 cur->type = OPTYPE_REG | OPTYPE_OP | OPTYPE_LAST;
637 cur->data = 0;
638 debug (9, "#%08lX %08lX\n", cur->type, cur->data);
639 cur++;
640 return cur;
641 }
642
643 while (*args != '\0')
644 {
645 if (*args == 'r')
646 {
647 args++;
648 type |= OPTYPE_REG;
649 }
650 else if (ISALPHA (*args))
651 {
652 unsigned long arg;
653
654 arg = insn_extract (*args, opcode->encoding);
655 debug (9, "%s : %08lX ------\n", opcode->name, arg);
656 if (letter_signed (*args))
657 {
658 type |= OPTYPE_SIG;
659 type |= ((num_ones (arg) - 1) << OPTYPE_SBIT_SHR) & OPTYPE_SBIT;
660 }
661
662 /* Split argument to sequences of consecutive ones. */
663 while (arg)
664 {
665 int shr = 0;
666 unsigned long tmp = arg, mask = 0;
667
668 while ((tmp & 1) == 0)
669 {
670 shr++;
671 tmp >>= 1;
672 }
673 while (tmp & 1)
674 {
675 mask++;
676 tmp >>= 1;
677 }
678 cur->type = type | shr;
679 cur->data = mask;
680 arg &= ~(((1 << mask) - 1) << shr);
681 debug (6, "|%08lX %08lX\n", cur->type, cur->data);
682 cur++;
683 }
684 args++;
685 }
686 else if (*args == '(')
687 {
688 /* Next param is displacement.
689 Later we will treat them as one operand. */
690 cur--;
691 cur->type = type | cur->type | OPTYPE_DIS | OPTYPE_OP;
692 debug (9, ">%08lX %08lX\n", cur->type, cur->data);
693 cur++;
694 type = 0;
695 i++;
696 args++;
697 }
698 else if (*args == OPERAND_DELIM)
699 {
700 cur--;
701 cur->type = type | cur->type | OPTYPE_OP;
702 debug (9, ">%08lX %08lX\n", cur->type, cur->data);
703 cur++;
704 type = 0;
705 i++;
706 args++;
707 }
708 else if (*args == '0')
709 {
710 cur->type = type;
711 cur->data = 0;
712 debug (9, ">%08lX %08lX\n", cur->type, cur->data);
713 cur++;
714 type = 0;
715 i++;
716 args++;
717 }
718 else if (*args == ')')
719 args++;
720 else
721 {
722 fprintf (stderr, "%s : parse error in args.\n", opcode->name);
723 exit (1);
724 }
725 }
726
727 cur--;
728 cur->type = type | cur->type | OPTYPE_OP | OPTYPE_LAST;
729 debug (9, "#%08lX %08lX\n", cur->type, cur->data);
730 cur++;
731
732 return cur;
733 }
734
735 /* Constructs new automata based on or32_opcodes array. */
736
737 void
738 build_automata (void)
739 {
740 unsigned int i;
741 unsigned long *end;
742 struct insn_op_struct *cur;
743
744 automata = malloc (MAX_AUTOMATA_SIZE * sizeof (unsigned long));
745 ti = malloc (sizeof (struct temp_insn_struct) * or32_num_opcodes);
746
747 nuncovered = or32_num_opcodes;
748 printf ("Building automata... ");
749 /* Build temporary information about instructions. */
750 for (i = 0; i < or32_num_opcodes; i++)
751 {
752 unsigned long ones, zeros;
753 char *encoding = or32_opcodes[i].encoding;
754
755 ones = insn_extract('1', encoding);
756 zeros = insn_extract('0', encoding);
757
758 ti[i].insn_mask = ones | zeros;
759 ti[i].insn = ones;
760 ti[i].in_pass = curpass = 0;
761
762 /*debug(9, "%s: %s %08X %08X\n", or32_opcodes[i].name,
763 or32_opcodes[i].encoding, ti[i].insn_mask, ti[i].insn);*/
764 }
765
766 /* Until all are covered search for best criteria to separate them. */
767 end = cover_insn (automata, curpass, 0xFFFFFFFF);
768
769 if (end - automata > MAX_AUTOMATA_SIZE)
770 {
771 fprintf (stderr, "Automata too large. Increase MAX_AUTOMATA_SIZE.");
772 exit (1);
773 }
774
775 printf ("done, num uncovered: %i/%i.\n", nuncovered, or32_num_opcodes);
776 printf ("Parsing operands data... ");
777
778 op_data = malloc (MAX_OP_TABLE_SIZE * sizeof (struct insn_op_struct));
779 op_start = malloc (or32_num_opcodes * sizeof (struct insn_op_struct *));
780 cur = op_data;
781
782 for (i = 0; i < or32_num_opcodes; i++)
783 {
784 op_start[i] = cur;
785 cur = parse_params (&or32_opcodes[i], cur);
786
787 if (cur - op_data > MAX_OP_TABLE_SIZE)
788 {
789 fprintf (stderr, "Operands table too small, increase MAX_OP_TABLE_SIZE.\n");
790 exit (1);
791 }
792 }
793 printf ("done.\n");
794 }
795
796 void
797 destruct_automata (void)
798 {
799 free (ti);
800 free (automata);
801 free (op_data);
802 free (op_start);
803 }
804
805 /* Decodes instruction and returns instruction index. */
806
807 int
808 insn_decode (unsigned int insn)
809 {
810 unsigned long *a = automata;
811 int i;
812
813 while (!(*a & LEAF_FLAG))
814 {
815 unsigned int first = *a;
816
817 debug (9, "%li ", (long)(a - automata));
818
819 a++;
820 i = (insn >> first) & *a;
821 a++;
822 if (!*(a + i))
823 {
824 /* Invalid instruction found? */
825 debug (9, "XXX\n");
826 return -1;
827 }
828 a = automata + *(a + i);
829 }
830
831 i = *a & ~LEAF_FLAG;
832
833 debug (9, "%i\n", i);
834
835 /* Final check - do we have direct match?
836 (based on or32_opcodes this should be the only possibility,
837 but in case of invalid/missing instruction we must perform a check) */
838 if ((ti[i].insn_mask & insn) == ti[i].insn)
839 return i;
840 else
841 return -1;
842 }
843
844 static char disassembled_str[50];
845 char *disassembled = &disassembled_str[0];
846
847 /* Automagically does zero- or sign- extension and also finds correct
848 sign bit position if sign extension is correct extension. Which extension
849 is proper is figured out from letter description. */
850
851 static unsigned long
852 extend_imm (unsigned long imm, char l)
853 {
854 unsigned long mask;
855 int letter_bits;
856
857 /* First truncate all bits above valid range for this letter
858 in case it is zero extend. */
859 letter_bits = letter_range (l);
860 mask = (1 << letter_bits) - 1;
861 imm &= mask;
862
863 /* Do sign extend if this is the right one. */
864 if (letter_signed(l) && (imm >> (letter_bits - 1)))
865 imm |= (~mask);
866
867 return imm;
868 }
869
870 static unsigned long
871 or32_extract (char param_ch, char *enc_initial, unsigned long insn)
872 {
873 char *enc;
874 unsigned long ret = 0;
875 int opc_pos = 0;
876 int param_pos = 0;
877
878 for (enc = enc_initial; *enc != '\0'; enc++)
879 if (*enc == param_ch)
880 {
881 if (enc - 2 >= enc_initial && (*(enc - 2) == '0') && (*(enc - 1) == 'x'))
882 continue;
883 else
884 param_pos++;
885 }
886
887 #if DEBUG
888 printf ("or32_extract: %x ", param_pos);
889 #endif
890 opc_pos = 32;
891
892 for (enc = enc_initial; *enc != '\0'; )
893 if ((*enc == '0') && (*(enc + 1) == 'x'))
894 {
895 opc_pos -= 4;
896 if ((param_ch == '0') || (param_ch == '1'))
897 {
898 unsigned long tmp = strtol (enc, NULL, 16);
899 #if DEBUG
900 printf (" enc=%s, tmp=%x ", enc, tmp);
901 #endif
902 if (param_ch == '0')
903 tmp = 15 - tmp;
904 ret |= tmp << opc_pos;
905 }
906 enc += 3;
907 }
908 else if ((*enc == '0') || (*enc == '1'))
909 {
910 opc_pos--;
911 if (param_ch == *enc)
912 ret |= 1 << opc_pos;
913 enc++;
914 }
915 else if (*enc == param_ch)
916 {
917 opc_pos--;
918 param_pos--;
919 #if DEBUG
920 printf ("\n ret=%x opc_pos=%x, param_pos=%x\n", ret, opc_pos, param_pos);
921 #endif
922 if (ISLOWER (param_ch))
923 ret -= ((insn >> opc_pos) & 0x1) << param_pos;
924 else
925 ret += ((insn >> opc_pos) & 0x1) << param_pos;
926 enc++;
927 }
928 else if (ISALPHA (*enc))
929 {
930 opc_pos--;
931 enc++;
932 }
933 else if (*enc == '-')
934 {
935 opc_pos--;
936 enc++;
937 }
938 else
939 enc++;
940
941 #if DEBUG
942 printf ("ret=%x\n", ret);
943 #endif
944 return ret;
945 }
946
947 /* Print register. Used only by print_insn. */
948
949 static void
950 or32_print_register (char param_ch, char *encoding, unsigned long insn)
951 {
952 int regnum = or32_extract(param_ch, encoding, insn);
953
954 sprintf (disassembled, "%sr%d", disassembled, regnum);
955 }
956
957 /* Print immediate. Used only by print_insn. */
958
959 static void
960 or32_print_immediate (char param_ch, char *encoding, unsigned long insn)
961 {
962 int imm = or32_extract (param_ch, encoding, insn);
963
964 imm = extend_imm (imm, param_ch);
965
966 if (letter_signed (param_ch))
967 {
968 if (imm < 0)
969 sprintf (disassembled, "%s%d", disassembled, imm);
970 else
971 sprintf (disassembled, "%s0x%x", disassembled, imm);
972 }
973 else
974 sprintf (disassembled, "%s%#x", disassembled, imm);
975 }
976
977 /* Disassemble one instruction from insn to disassemble.
978 Return the size of the instruction. */
979
980 int
981 disassemble_insn (unsigned long insn)
982 {
983 int index;
984 index = insn_decode (insn);
985
986 if (index >= 0)
987 {
988 struct or32_opcode const *opcode = &or32_opcodes[index];
989 char *s;
990
991 sprintf (disassembled, "%s ", opcode->name);
992 for (s = opcode->args; *s != '\0'; ++s)
993 {
994 switch (*s)
995 {
996 case '\0':
997 return 4;
998
999 case 'r':
1000 or32_print_register (*++s, opcode->encoding, insn);
1001 break;
1002
1003 default:
1004 if (strchr (opcode->encoding, *s))
1005 or32_print_immediate (*s, opcode->encoding, insn);
1006 else
1007 sprintf (disassembled, "%s%c", disassembled, *s);
1008 }
1009 }
1010 }
1011 else
1012 {
1013 /* This used to be %8x for binutils. */
1014 sprintf (disassembled, "%s.word 0x%08lx", disassembled, insn);
1015 }
1016
1017 return insn_len (insn);
1018 }
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