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Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [orpsocv2/] [sw/] [utils/] [or32-idecode/] [or32-opc.c] - Blame information for rev 621

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1 6 julius 
/* Table of opcodes for the OpenRISC 1000 ISA.
2 
   Copyright 2002, 2004, 2005, 2007 Free Software Foundation, Inc.
3 
   Contributed by Damjan Lampret (lampret@opencores.org).
4 
 
5 
   This file is part of the GNU opcodes library.
6 
 
7 
   This library 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 3, or (at your option)
10 
   any later version.
11 
 
12 
   It is distributed in the hope that it will be useful, but WITHOUT
13 
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 
   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
15 
   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 <ctype.h>
29 
#include "ansidecl.h"
30 
/*
31 
#ifdef HAVE_CONFIG_H
32 
# include "config.h"
33 
#endif
34 
#ifdef HAS_EXECUTION
35 
# ifdef HAVE_INTTYPES_H
36 
#  include <inttypes.h> // ...but to get arch.h we need uint{8,16,32}_t..
37 
# endif
38 
# include "port.h"
39 
# include "arch.h" // ...but to get abstract.h, we need oraddr_t...
40 
# include "abstract.h" // To get struct iqueue_entry...
41 
# include "debug.h" // To get debug()
42 
#endif
43 
*/
44 
#include "or32.h"
45 
 
46 
const struct or32_letter or32_letters[] =
47 
{
48 
  { 'A', NUM_UNSIGNED },
49 
  { 'B', NUM_UNSIGNED },
50 
  { 'D', NUM_UNSIGNED },
51 
  { 'I', NUM_SIGNED },
52 
  { 'K', NUM_UNSIGNED },
53 
  { 'L', NUM_UNSIGNED },
54 
  { 'N', NUM_SIGNED },
55 
  { '0', NUM_UNSIGNED },
56 
  { '\0', 0 }     /* Dummy entry.  */
57 
};
58 
 
59 
/* Opcode encoding:
60 
   machine[31:30]: first two bits of opcode
61 
                   00 - neither of source operands is GPR
62 
                   01 - second source operand is GPR (rB)
63 
                   10 - first source operand is GPR (rA)
64 
                   11 - both source operands are GPRs (rA and rB)
65 
   machine[29:26]: next four bits of opcode
66 
   machine[25:00]: instruction operands (specific to individual instruction)
67 
 
68 
  Recommendation: irrelevant instruction bits should be set with a value of
69 
  bits in same positions of instruction preceding current instruction in the
70 
  code (when assembling).  */
71 
 
72 
#ifdef HAS_EXECUTION
73 
# if SIMPLE_EXECUTION
74 
#  define EFN &l_none
75 
#  define EF(func) &(func)
76 
#  define EFI &l_invalid
77 
# elif COMPLEX_EXECUTION
78 
#  define EFN "l_none"
79 
#  define EFI "l_invalid"
80 
#  ifdef __GNUC__
81 
#   define EF(func) #func
82 
#  else
83 
#   define EF(func) "func"
84 
#  endif
85 
# else /* DYNAMIC_EXECUTION */
86 
#  define EFN &l_none
87 
#  define EF(func) &(gen_ ##func)
88 
#  define EFI &gen_l_invalid
89 
# endif
90 
#else /* HAS_EXECUTION */
91 
# define EFN &l_none
92 
# define EF(func) EFN
93 
# define EFI EFN
94 
#endif /* HAS_EXECUTION */
95 
 
96 
const struct or32_opcode or32_opcodes[] = {
97 
  { "l.j",        "N",           "00 0x0  NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_j), OR32_IF_DELAY, it_jump },
98 
  { "l.jal",      "N",           "00 0x1  NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_jal), OR32_IF_DELAY, it_jump },
99 
  { "l.bnf",      "N",           "00 0x3  NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_bnf), OR32_IF_DELAY | OR32_R_FLAG, it_branch },
100 
  { "l.bf",       "N",           "00 0x4  NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_bf), OR32_IF_DELAY | OR32_R_FLAG, it_branch },
101 
  { "l.nop",      "K",           "00 0x5  01--- ----- KKKK KKKK KKKK KKKK", EF(l_nop), 0, it_nop },
102 
  { "l.movhi",    "rD,K",        "00 0x6  DDDDD ----0 KKKK KKKK KKKK KKKK", EF(l_movhi), 0, it_movimm },
103 
  { "l.macrc",    "rD",          "00 0x6  DDDDD ----1 0000 0000 0000 0000", EF(l_macrc), 0, it_mac },
104 
  { "l.sys",      "K",           "00 0x8  00000 00000 KKKK KKKK KKKK KKKK", EF(l_sys), 0, it_exception },
105 
  { "l.trap",     "K",           "00 0x8  01000 00000 KKKK KKKK KKKK KKKK", EF(l_trap), 0, it_exception },
106 
  { "l.msync",    "",            "00 0x8  10000 00000 0000 0000 0000 0000", EFN, 0, it_unknown },
107 
  { "l.psync",    "",            "00 0x8  10100 00000 0000 0000 0000 0000", EFN, 0, it_unknown },
108 
  { "l.csync",    "",            "00 0x8  11000 00000 0000 0000 0000 0000", EFN, 0, it_unknown },
109 
  { "l.rfe",      "",            "00 0x9  ----- ----- ---- ---- ---- ----", EF(l_rfe), 0, it_exception },
110 
  { "lv.all_eq.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x1 0x0",   EFI, 0, it_unknown },
111 
  { "lv.all_eq.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x1 0x1",   EFI, 0, it_unknown },
112 
  { "lv.all_ge.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x1 0x2",   EFI, 0, it_unknown },
113 
  { "lv.all_ge.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x1 0x3",   EFI, 0, it_unknown },
114 
  { "lv.all_gt.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x1 0x4",   EFI, 0, it_unknown },
115 
  { "lv.all_gt.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x1 0x5",   EFI, 0, it_unknown },
116 
  { "lv.all_le.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x1 0x6",   EFI, 0, it_unknown },
117 
  { "lv.all_le.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x1 0x7",   EFI, 0, it_unknown },
118 
  { "lv.all_lt.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x1 0x8",   EFI, 0, it_unknown },
119 
  { "lv.all_lt.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x1 0x9",   EFI, 0, it_unknown },
120 
  { "lv.all_ne.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x1 0xA",   EFI, 0, it_unknown },
121 
  { "lv.all_ne.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x1 0xB",   EFI, 0, it_unknown },
122 
  { "lv.any_eq.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x2 0x0",   EFI, 0, it_unknown },
123 
  { "lv.any_eq.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x2 0x1",   EFI, 0, it_unknown },
124 
  { "lv.any_ge.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x2 0x2",   EFI, 0, it_unknown },
125 
  { "lv.any_ge.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x2 0x3",   EFI, 0, it_unknown },
126 
  { "lv.any_gt.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x2 0x4",   EFI, 0, it_unknown },
127 
  { "lv.any_gt.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x2 0x5",   EFI, 0, it_unknown },
128 
  { "lv.any_le.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x2 0x6",   EFI, 0, it_unknown },
129 
  { "lv.any_le.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x2 0x7",   EFI, 0, it_unknown },
130 
  { "lv.any_lt.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x2 0x8",   EFI, 0, it_unknown },
131 
  { "lv.any_lt.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x2 0x9",   EFI, 0, it_unknown },
132 
  { "lv.any_ne.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x2 0xA",   EFI, 0, it_unknown },
133 
  { "lv.any_ne.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x2 0xB",   EFI, 0, it_unknown },
134 
  { "lv.add.b",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x3 0x0",   EFI, 0, it_unknown },
135 
  { "lv.add.h",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x3 0x1",   EFI, 0, it_unknown },
136 
  { "lv.adds.b",  "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x3 0x2",   EFI, 0, it_unknown },
137 
  { "lv.adds.h",  "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x3 0x3",   EFI, 0, it_unknown },
138 
  { "lv.addu.b",  "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x3 0x4",   EFI, 0, it_unknown },
139 
  { "lv.addu.h",  "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x3 0x5",   EFI, 0, it_unknown },
140 
  { "lv.addus.b", "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x3 0x6",   EFI, 0, it_unknown },
141 
  { "lv.addus.h", "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x3 0x7",   EFI, 0, it_unknown },
142 
  { "lv.and",     "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x3 0x8",   EFI, 0, it_unknown },
143 
  { "lv.avg.b",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x3 0x9",   EFI, 0, it_unknown },
144 
  { "lv.avg.h",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x3 0xA",   EFI, 0, it_unknown },
145 
  { "lv.cmp_eq.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x4 0x0",   EFI, 0, it_unknown },
146 
  { "lv.cmp_eq.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x4 0x1",   EFI, 0, it_unknown },
147 
  { "lv.cmp_ge.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x4 0x2",   EFI, 0, it_unknown },
148 
  { "lv.cmp_ge.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x4 0x3",   EFI, 0, it_unknown },
149 
  { "lv.cmp_gt.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x4 0x4",   EFI, 0, it_unknown },
150 
  { "lv.cmp_gt.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x4 0x5",   EFI, 0, it_unknown },
151 
  { "lv.cmp_le.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x4 0x6",   EFI, 0, it_unknown },
152 
  { "lv.cmp_le.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x4 0x7",   EFI, 0, it_unknown },
153 
  { "lv.cmp_lt.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x4 0x8",   EFI, 0, it_unknown },
154 
  { "lv.cmp_lt.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x4 0x9",   EFI, 0, it_unknown },
155 
  { "lv.cmp_ne.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x4 0xA",   EFI, 0, it_unknown },
156 
  { "lv.cmp_ne.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x4 0xB",   EFI, 0, it_unknown },
157 
  { "lv.madds.h", "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x5 0x4",   EFI, 0, it_unknown },
158 
  { "lv.max.b",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x5 0x5",   EFI, 0, it_unknown },
159 
  { "lv.max.h",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x5 0x6",   EFI, 0, it_unknown },
160 
  { "lv.merge.b", "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x5 0x7",   EFI, 0, it_unknown },
161 
  { "lv.merge.h", "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x5 0x8",   EFI, 0, it_unknown },
162 
  { "lv.min.b",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x5 0x9",   EFI, 0, it_unknown },
163 
  { "lv.min.h",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x5 0xA",   EFI, 0, it_unknown },
164 
  { "lv.msubs.h", "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x5 0xB",   EFI, 0, it_unknown },
165 
  { "lv.muls.h",  "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x5 0xC",   EFI, 0, it_unknown },
166 
  { "lv.nand",    "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x5 0xD",   EFI, 0, it_unknown },
167 
  { "lv.nor",     "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x5 0xE",   EFI, 0, it_unknown },
168 
  { "lv.or",      "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x5 0xF",   EFI, 0, it_unknown },
169 
  { "lv.pack.b",  "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0x0",   EFI, 0, it_unknown },
170 
  { "lv.pack.h",  "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0x1",   EFI, 0, it_unknown },
171 
  { "lv.packs.b", "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0x2",   EFI, 0, it_unknown },
172 
  { "lv.packs.h", "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0x3",   EFI, 0, it_unknown },
173 
  { "lv.packus.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0x4",   EFI, 0, it_unknown },
174 
  { "lv.packus.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0x5",   EFI, 0, it_unknown },
175 
  { "lv.perm.n",  "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0x6",   EFI, 0, it_unknown },
176 
  { "lv.rl.b",    "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0x7",   EFI, 0, it_unknown },
177 
  { "lv.rl.h",    "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0x8",   EFI, 0, it_unknown },
178 
  { "lv.sll.b",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0x9",   EFI, 0, it_unknown },
179 
  { "lv.sll.h",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0xA",   EFI, 0, it_unknown },
180 
  { "lv.sll",     "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0xB",   EFI, 0, it_unknown },
181 
  { "lv.srl.b",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0xC",   EFI, 0, it_unknown },
182 
  { "lv.srl.h",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0xD",   EFI, 0, it_unknown },
183 
  { "lv.sra.b",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0xE",   EFI, 0, it_unknown },
184 
  { "lv.sra.h",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x6 0xF",   EFI, 0, it_unknown },
185 
  { "lv.srl",     "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x7 0x0",   EFI, 0, it_unknown },
186 
  { "lv.sub.b",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x7 0x1",   EFI, 0, it_unknown },
187 
  { "lv.sub.h",   "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x7 0x2",   EFI, 0, it_unknown },
188 
  { "lv.subs.b",  "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x7 0x3",   EFI, 0, it_unknown },
189 
  { "lv.subs.h",  "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x7 0x4",   EFI, 0, it_unknown },
190 
  { "lv.subu.b",  "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x7 0x5",   EFI, 0, it_unknown },
191 
  { "lv.subu.h",  "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x7 0x6",   EFI, 0, it_unknown },
192 
  { "lv.subus.b", "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x7 0x7",   EFI, 0, it_unknown },
193 
  { "lv.subus.h", "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x7 0x8",   EFI, 0, it_unknown },
194 
  { "lv.unpack.b","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x7 0x9",   EFI, 0, it_unknown },
195 
  { "lv.unpack.h","rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x7 0xA",   EFI, 0, it_unknown },
196 
  { "lv.xor",     "rD,rA,rB",    "00 0xA  DDDDD AAAAA BBBB B--- 0x7 0xB",   EFI, 0, it_unknown },
197 
  { "lv.cust1",   "",            "00 0xA  ----- ----- ---- ---- 0xC ----",  EFI, 0, it_unknown },
198 
  { "lv.cust2",   "",            "00 0xA  ----- ----- ---- ---- 0xD ----",  EFI, 0, it_unknown },
199 
  { "lv.cust3",   "",            "00 0xA  ----- ----- ---- ---- 0xE ----",  EFI, 0, it_unknown },
200 
  { "lv.cust4",   "",            "00 0xA  ----- ----- ---- ---- 0xF ----",  EFI, 0, it_unknown },
201 
 
202 
  { "l.jr",       "rB",          "01 0x1  ----- ----- BBBB B--- ---- ----", EF(l_jr), OR32_IF_DELAY, it_jump },
203 
  { "l.jalr",     "rB",          "01 0x2  ----- ----- BBBB B--- ---- ----", EF(l_jalr), OR32_IF_DELAY, it_jump },
204 
  { "l.maci",     "rA,I",        "01 0x3  IIIII AAAAA ---- -III IIII IIII", EF(l_mac), 0, it_mac },
205 
  { "l.cust1",    "",            "01 0xC  ----- ----- ---- ---- ---- ----", EF(l_cust1), 0, it_unknown },
206 
  { "l.cust2",    "",            "01 0xD  ----- ----- ---- ---- ---- ----", EF(l_cust2), 0, it_unknown },
207 
  { "l.cust3",    "",            "01 0xE  ----- ----- ---- ---- ---- ----", EF(l_cust3), 0, it_unknown },
208 
  { "l.cust4",    "",            "01 0xF  ----- ----- ---- ---- ---- ----", EF(l_cust4), 0, it_unknown },
209 
 
210 
  { "l.ld",       "rD,I(rA)",    "10 0x0  DDDDD AAAAA IIII IIII IIII IIII", EFI, 0, it_load },
211 
  { "l.lwz",      "rD,I(rA)",    "10 0x1  DDDDD AAAAA IIII IIII IIII IIII", EF(l_lwz), 0, it_load },
212 
  { "l.lws",      "rD,I(rA)",    "10 0x2  DDDDD AAAAA IIII IIII IIII IIII", EFI, 0, it_load },
213 
  { "l.lbz",      "rD,I(rA)",    "10 0x3  DDDDD AAAAA IIII IIII IIII IIII", EF(l_lbz), 0, it_load },
214 
  { "l.lbs",      "rD,I(rA)",    "10 0x4  DDDDD AAAAA IIII IIII IIII IIII", EF(l_lbs), 0, it_load },
215 
  { "l.lhz",      "rD,I(rA)",    "10 0x5  DDDDD AAAAA IIII IIII IIII IIII", EF(l_lhz), 0, it_load },
216 
  { "l.lhs",      "rD,I(rA)",    "10 0x6  DDDDD AAAAA IIII IIII IIII IIII", EF(l_lhs), 0, it_load },
217 
 
218 
  { "l.addi",     "rD,rA,I",     "10 0x7  DDDDD AAAAA IIII IIII IIII IIII", EF(l_add), OR32_W_FLAG, it_arith },
219 
  { "l.addic",    "rD,rA,I",     "10 0x8  DDDDD AAAAA IIII IIII IIII IIII", EFI, 0, it_arith },
220 
  { "l.andi",     "rD,rA,K",     "10 0x9  DDDDD AAAAA KKKK KKKK KKKK KKKK", EF(l_and), OR32_W_FLAG, it_arith },
221 
  { "l.ori",      "rD,rA,K",     "10 0xA  DDDDD AAAAA KKKK KKKK KKKK KKKK", EF(l_or), 0, it_arith },
222 
  { "l.xori",     "rD,rA,I",     "10 0xB  DDDDD AAAAA IIII IIII IIII IIII", EF(l_xor), 0, it_arith },
223 
  { "l.muli",     "rD,rA,I",     "10 0xC  DDDDD AAAAA IIII IIII IIII IIII", EF(l_mul), 0, it_arith },
224 
  { "l.mfspr",    "rD,rA,K",     "10 0xD  DDDDD AAAAA KKKK KKKK KKKK KKKK", EF(l_mfspr), 0, it_move },
225 
  { "l.slli",     "rD,rA,L",     "10 0xE  DDDDD AAAAA ---- ---- 00LL LLLL", EF(l_sll), 0, it_shift },
226 
  { "l.srli",     "rD,rA,L",     "10 0xE  DDDDD AAAAA ---- ---- 01LL LLLL", EF(l_srl), 0, it_shift },
227 
  { "l.srai",     "rD,rA,L",     "10 0xE  DDDDD AAAAA ---- ---- 10LL LLLL", EF(l_sra), 0, it_shift },
228 
  { "l.rori",     "rD,rA,L",     "10 0xE  DDDDD AAAAA ---- ---- 11LL LLLL", EFI, 0, it_shift },
229 
 
230 
  { "l.sfeqi",    "rA,I",        "10 0xF  00000 AAAAA IIII IIII IIII IIII", EF(l_sfeq), OR32_W_FLAG, it_compare },
231 
  { "l.sfnei",    "rA,I",        "10 0xF  00001 AAAAA IIII IIII IIII IIII", EF(l_sfne), OR32_W_FLAG, it_compare },
232 
  { "l.sfgtui",   "rA,I",        "10 0xF  00010 AAAAA IIII IIII IIII IIII", EF(l_sfgtu), OR32_W_FLAG, it_compare },
233 
  { "l.sfgeui",   "rA,I",        "10 0xF  00011 AAAAA IIII IIII IIII IIII", EF(l_sfgeu), OR32_W_FLAG, it_compare },
234 
  { "l.sfltui",   "rA,I",        "10 0xF  00100 AAAAA IIII IIII IIII IIII", EF(l_sfltu), OR32_W_FLAG, it_compare },
235 
  { "l.sfleui",   "rA,I",        "10 0xF  00101 AAAAA IIII IIII IIII IIII", EF(l_sfleu), OR32_W_FLAG, it_compare },
236 
  { "l.sfgtsi",   "rA,I",        "10 0xF  01010 AAAAA IIII IIII IIII IIII", EF(l_sfgts), OR32_W_FLAG, it_compare },
237 
  { "l.sfgesi",   "rA,I",        "10 0xF  01011 AAAAA IIII IIII IIII IIII", EF(l_sfges), OR32_W_FLAG, it_compare },
238 
  { "l.sfltsi",   "rA,I",        "10 0xF  01100 AAAAA IIII IIII IIII IIII", EF(l_sflts), OR32_W_FLAG, it_compare },
239 
  { "l.sflesi",   "rA,I",        "10 0xF  01101 AAAAA IIII IIII IIII IIII", EF(l_sfles), OR32_W_FLAG, it_compare },
240 
 
241 
  { "l.mtspr",    "rA,rB,K",     "11 0x0  KKKKK AAAAA BBBB BKKK KKKK KKKK", EF(l_mtspr), 0, it_move },
242 
  { "l.mac",      "rA,rB",       "11 0x1  ----- AAAAA BBBB B--- ---- 0x1",  EF(l_mac), 0, it_mac },
243 
  { "l.msb",      "rA,rB",       "11 0x1  ----- AAAAA BBBB B--- ---- 0x2",  EF(l_msb), 0, it_mac },
244 
 
245 
  { "lf.add.s",   "rD,rA,rB",    "11 0x2  DDDDD AAAAA BBBB B--- 0x0 0x0",   EF(lf_add_s), 0, it_float },
246 
  { "lf.sub.s",   "rD,rA,rB",    "11 0x2  DDDDD AAAAA BBBB B--- 0x0 0x1",   EF(lf_sub_s), 0, it_float },
247 
  { "lf.mul.s",   "rD,rA,rB",    "11 0x2  DDDDD AAAAA BBBB B--- 0x0 0x2",   EF(lf_mul_s), 0, it_float },
248 
  { "lf.div.s",   "rD,rA,rB",    "11 0x2  DDDDD AAAAA BBBB B--- 0x0 0x3",   EF(lf_div_s), 0, it_float },
249 
  { "lf.itof.s",  "rD,rA",       "11 0x2  DDDDD AAAAA 0000 0--- 0x0 0x4",   EF(lf_itof_s), 0, it_float },
250 
  { "lf.ftoi.s",  "rD,rA",       "11 0x2  DDDDD AAAAA 0000 0--- 0x0 0x5",   EF(lf_ftoi_s), 0, it_float },
251 
  { "lf.rem.s",   "rD,rA,rB",    "11 0x2  DDDDD AAAAA BBBB B--- 0x0 0x6",   EF(lf_rem_s), 0, it_float },
252 
  { "lf.madd.s",  "rD,rA,rB",    "11 0x2  DDDDD AAAAA BBBB B--- 0x0 0x7",   EF(lf_madd_s), 0, it_float },
253 
  { "lf.sfeq.s",  "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0x0 0x8",   EF(lf_sfeq_s), 0, it_float },
254 
  { "lf.sfne.s",  "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0x0 0x9",   EF(lf_sfne_s), 0, it_float },
255 
  { "lf.sfgt.s",  "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0x0 0xA",   EF(lf_sfgt_s), 0, it_float },
256 
  { "lf.sfge.s",  "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0x0 0xB",   EF(lf_sfge_s), 0, it_float },
257 
  { "lf.sflt.s",  "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0x0 0xC",   EF(lf_sflt_s), 0, it_float },
258 
  { "lf.sfle.s",  "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0x0 0xD",   EF(lf_sfle_s), 0, it_float },
259 
  { "lf.cust1.s", "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0xD ----",  EFI, 0, it_float },
260 
 
261 
  { "lf.add.d",   "rD,rA,rB",    "11 0x2  DDDDD AAAAA BBBB B--- 0x1 0x0",   EFI, 0, it_float },
262 
  { "lf.sub.d",   "rD,rA,rB",    "11 0x2  DDDDD AAAAA BBBB B--- 0x1 0x1",   EFI, 0, it_float },
263 
  { "lf.mul.d",   "rD,rA,rB",    "11 0x2  DDDDD AAAAA BBBB B--- 0x1 0x2",   EFI, 0, it_float },
264 
  { "lf.div.d",   "rD,rA,rB",    "11 0x2  DDDDD AAAAA BBBB B--- 0x1 0x3",   EFI, 0, it_float },
265 
  { "lf.itof.d",  "rD,rA",       "11 0x2  DDDDD AAAAA 0000 0--- 0x1 0x4",   EFI, 0, it_float },
266 
  { "lf.ftoi.d",  "rD,rA",       "11 0x2  DDDDD AAAAA 0000 0--- 0x1 0x5",   EFI, 0, it_float },
267 
  { "lf.rem.d",   "rD,rA,rB",    "11 0x2  DDDDD AAAAA BBBB B--- 0x1 0x6",   EFI, 0, it_float },
268 
  { "lf.madd.d",  "rD,rA,rB",    "11 0x2  DDDDD AAAAA BBBB B--- 0x1 0x7",   EFI, 0, it_float },
269 
  { "lf.sfeq.d",  "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0x1 0x8",   EFI, 0, it_float },
270 
  { "lf.sfne.d",  "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0x1 0x9",   EFI, 0, it_float },
271 
  { "lf.sfgt.d",  "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0x1 0xA",   EFI, 0, it_float },
272 
  { "lf.sfge.d",  "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0x1 0xB",   EFI, 0, it_float },
273 
  { "lf.sflt.d",  "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0x1 0xC",   EFI, 0, it_float },
274 
  { "lf.sfle.d",  "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0x1 0xD",   EFI, 0, it_float },
275 
  { "lf.cust1.d", "rA,rB",       "11 0x2  ----- AAAAA BBBB B--- 0xE ----",  EFI, 0, it_float },
276 
 
277 
  { "l.sd",       "I(rD),rB",    "11 0x4  IIIII DDDDD BBBB BIII IIII IIII", EFI, 0, it_store },
278 
  { "l.sw",       "I(rD),rB",    "11 0x5  IIIII DDDDD BBBB BIII IIII IIII", EF(l_sw), 0, it_store },
279 
  { "l.sb",       "I(rD),rB",    "11 0x6  IIIII DDDDD BBBB BIII IIII IIII", EF(l_sb), 0, it_store },
280 
  { "l.sh",       "I(rD),rB",    "11 0x7  IIIII DDDDD BBBB BIII IIII IIII", EF(l_sh), 0, it_store },
281 
 
282 
  { "l.add",      "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-00 ---- 0x0",  EF(l_add), OR32_W_FLAG, it_arith },
283 
  { "l.addc",     "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-00 ---- 0x1",  EF(l_addc), OR32_W_FLAG, it_arith },
284 
  { "l.sub",      "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-00 ---- 0x2",  EF(l_sub), 0, it_arith },
285 
  { "l.and",      "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-00 ---- 0x3",  EF(l_and), OR32_W_FLAG, it_arith },
286 
  { "l.or",       "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-00 ---- 0x4",  EF(l_or), 0, it_arith },
287 
  { "l.xor",      "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-00 ---- 0x5",  EF(l_xor), 0, it_arith },
288 
  { "l.mul",      "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-11 ---- 0x6",  EF(l_mul), 0, it_arith },
289 
 
290 
  { "l.sll",      "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-00 00-- 0x8",  EF(l_sll), 0, it_shift },
291 
  { "l.srl",      "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-00 01-- 0x8",  EF(l_srl), 0, it_shift },
292 
  { "l.sra",      "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-00 10-- 0x8",  EF(l_sra), 0, it_shift },
293 
  { "l.ror",      "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-00 11-- 0x8",  EFI, 0, it_shift },
294 
  { "l.div",      "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-11 ---- 0x9",  EF(l_div), 0, it_arith },
295 
  { "l.divu",     "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-11 ---- 0xA",  EF(l_divu), 0, it_arith },
296 
  { "l.mulu",     "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-11 ---- 0xB",  EFI, 0, it_arith },
297 
  { "l.extbs",    "rD,rA",       "11 0x8  DDDDD AAAAA ---- --00 01-- 0xC",  EF(l_extbs), 0, it_move },
298 
  { "l.exths",    "rD,rA",       "11 0x8  DDDDD AAAAA ---- --00 00-- 0xC",  EF(l_exths), 0, it_move },
299 
  { "l.extws",    "rD,rA",       "11 0x8  DDDDD AAAAA ---- --00 00-- 0xD",  EF(l_extws), 0, it_move },
300 
  { "l.extbz",    "rD,rA",       "11 0x8  DDDDD AAAAA ---- --00 11-- 0xC",  EF(l_extbz), 0, it_move },
301 
  { "l.exthz",    "rD,rA",       "11 0x8  DDDDD AAAAA ---- --00 10-- 0xC",  EF(l_exthz), 0, it_move },
302 
  { "l.extwz",    "rD,rA",       "11 0x8  DDDDD AAAAA ---- --00 01-- 0xD",  EF(l_extwz), 0, it_move },
303 
  { "l.cmov",     "rD,rA,rB",    "11 0x8  DDDDD AAAAA BBBB B-00 ---- 0xE",  EF(l_cmov), OR32_R_FLAG, it_move },
304 
  { "l.ff1",      "rD,rA",       "11 0x8  DDDDD AAAAA ---- --00 ---- 0xF",  EF(l_ff1), 0, it_arith },
305 
  { "l.fl1",      "rD,rA",       "11 0x8  DDDDD AAAAA ---- --01 ---- 0xF",  EFI, 0, it_arith },
306 
 
307 
  { "l.sfeq",     "rA,rB",       "11 0x9  00000 AAAAA BBBB B--- ---- ----", EF(l_sfeq), OR32_W_FLAG, it_compare },
308 
  { "l.sfne",     "rA,rB",       "11 0x9  00001 AAAAA BBBB B--- ---- ----", EF(l_sfne), OR32_W_FLAG, it_compare },
309 
  { "l.sfgtu",    "rA,rB",       "11 0x9  00010 AAAAA BBBB B--- ---- ----", EF(l_sfgtu), OR32_W_FLAG, it_compare },
310 
  { "l.sfgeu",    "rA,rB",       "11 0x9  00011 AAAAA BBBB B--- ---- ----", EF(l_sfgeu), OR32_W_FLAG, it_compare },
311 
  { "l.sfltu",    "rA,rB",       "11 0x9  00100 AAAAA BBBB B--- ---- ----", EF(l_sfltu), OR32_W_FLAG, it_compare },
312 
  { "l.sfleu",    "rA,rB",       "11 0x9  00101 AAAAA BBBB B--- ---- ----", EF(l_sfleu), OR32_W_FLAG, it_compare },
313 
  { "l.sfgts",    "rA,rB",       "11 0x9  01010 AAAAA BBBB B--- ---- ----", EF(l_sfgts), OR32_W_FLAG, it_compare },
314 
  { "l.sfges",    "rA,rB",       "11 0x9  01011 AAAAA BBBB B--- ---- ----", EF(l_sfges), OR32_W_FLAG, it_compare },
315 
  { "l.sflts",    "rA,rB",       "11 0x9  01100 AAAAA BBBB B--- ---- ----", EF(l_sflts), OR32_W_FLAG, it_compare },
316 
  { "l.sfles",    "rA,rB",       "11 0x9  01101 AAAAA BBBB B--- ---- ----", EF(l_sfles), OR32_W_FLAG, it_compare },
317 
 
318 
  { "l.cust5",    "rD,rA,rB,L,K","11 0xC  DDDDD AAAAA BBBB BLLL LLLK KKKK", EFI, 0, it_unknown },
319 
  { "l.cust6",    "",            "11 0xD  ----- ----- ---- ---- ---- ----", EFI, 0, it_unknown },
320 
  { "l.cust7",    "",            "11 0xE  ----- ----- ---- ---- ---- ----", EFI, 0, it_unknown },
321 
  { "l.cust8",    "",            "11 0xF  ----- ----- ---- ---- ---- ----", EFI, 0, it_unknown },
322 
 
323 
  /* This section should not be defined in or1ksim, since it contains duplicates,
324 
     which would cause machine builder to complain.  */
325 
#ifdef HAS_CUST
326 
  { "l.cust5_1",  "rD",          "11 0xC  DDDDD ----- ---- ---- ---- ----", EFI, 0, it_unknown },
327 
  { "l.cust5_2",  "rD,rA"   ,    "11 0xC  DDDDD AAAAA ---- ---- ---- ----", EFI, 0, it_unknown },
328 
  { "l.cust5_3",  "rD,rA,rB",    "11 0xC  DDDDD AAAAA BBBB B--- ---- ----", EFI, 0, it_unknown },
329 
 
330 
  { "l.cust6_1",  "rD",          "11 0xD  DDDDD ----- ---- ---- ---- ----", EFI, 0, it_unknown },
331 
  { "l.cust6_2",  "rD,rA"   ,    "11 0xD  DDDDD AAAAA ---- ---- ---- ----", EFI, 0, it_unknown },
332 
  { "l.cust6_3",  "rD,rA,rB",    "11 0xD  DDDDD AAAAA BBBB B--- ---- ----", EFI, 0, it_unknown },
333 
 
334 
  { "l.cust7_1",  "rD",          "11 0xE  DDDDD ----- ---- ---- ---- ----", EFI, 0, it_unknown },
335 
  { "l.cust7_2",  "rD,rA"   ,    "11 0xE  DDDDD AAAAA ---- ---- ---- ----", EFI, 0, it_unknown },
336 
  { "l.cust7_3",  "rD,rA,rB",    "11 0xE  DDDDD AAAAA BBBB B--- ---- ----", EFI, 0, it_unknown },
337 
 
338 
  { "l.cust8_1",  "rD",          "11 0xF  DDDDD ----- ---- ---- ---- ----", EFI, 0, it_unknown },
339 
  { "l.cust8_2",  "rD,rA"   ,    "11 0xF  DDDDD AAAAA ---- ---- ---- ----", EFI, 0, it_unknown },
340 
  { "l.cust8_3",  "rD,rA,rB",    "11 0xF  DDDDD AAAAA BBBB B--- ---- ----", EFI, 0, it_unknown },
341 
#endif
342 
 
343 
  /* Dummy entry, not included in num_opcodes.  This
344 
     lets code examine entry i+1 without checking
345 
     if we've run off the end of the table.  */
346 
  { "", "", "", EFI, 0, 0 }
347 
};
348 
 
349 
#undef EFI
350 
#undef EFN
351 
#undef EF
352 
 
353 
/* Define dummy, if debug is not defined.  */
354 
#ifndef HAS_DEBUG
355 
#define debug(l, fmt...) ;
356 
#endif
357 
 
358 
const unsigned int or32_num_opcodes = ((sizeof(or32_opcodes)) / (sizeof(struct or32_opcode))) - 1;
359 
 
360 
/* Calculates instruction length in bytes. Always 4 for OR32.  */
361 
 
362 
int
363 
insn_len (int insn_index ATTRIBUTE_UNUSED)
364 
{
365 
  insn_index = 0; /* Just to get rid that warning.  */
366 
  return 4;
367 
}
368 
 
369 
/* Is individual insn's operand signed or unsigned?  */
370 
 
371 
int
372 
letter_signed (char l)
373 
{
374 
  const struct or32_letter *pletter;
375 
 
376 
  for (pletter = or32_letters; pletter->letter != '\0'; pletter++)
377 
    if (pletter->letter == l)
378 
      return pletter->sign;
379 
 
380 
  printf ("letter_signed(%c): Unknown letter.\n", l);
381 
  return 0;
382 
}
383 
 
384 
/* Simple cache for letter ranges */
385 
static int range_cache[256] = {0};
386 
 
387 
/* Number of letters in the individual lettered operand.  */
388 
int
389 
letter_range (char l)
390 
{
391 
  const struct or32_opcode *pinsn;
392 
  char *enc;
393 
  int range = 0;
394 
 
395 
  /* Is value cached? */
396 
  if ((range = range_cache[(unsigned char)l])) return range;
397 
 
398 
  for (pinsn = or32_opcodes; strlen (pinsn->name); pinsn ++)
399 
    {
400 
      if (strchr (pinsn->encoding,l))
401 
        {
402 
          for (enc = pinsn->encoding; *enc != '\0'; enc ++)
403 
            if ((*enc == '0') && (*(enc + 1) == 'x'))
404 
              enc += 2;
405 
            else if (*enc == l)
406 
              range++;
407 
          return range_cache[(unsigned char)l] = range;
408 
        }
409 
    }
410 
 
411 
  printf ("\nABORT: letter_range(%c): Never used letter.\n", l);
412 
  exit (1);
413 
}
414 
 
415 
/* MM: Returns index of given instruction name.  */
416 
 
417 
int
418 
insn_index (char *insn)
419 
{
420 
  unsigned int i;
421 
  int found = -1;
422 
 
423 
  for (i = 0; i < or32_num_opcodes; i++)
424 
    if (!strcmp (or32_opcodes[i].name, insn))
425 
      {
426 
        found = i;
427 
        break;
428 
      }
429 
  return found;
430 
}
431 
 
432 
const char *
433 
insn_name (int index)
434 
{
435 
  if (index >= 0 && index < (int) or32_num_opcodes)
436 
    return or32_opcodes[index].name;
437 
  else
438 
    return "???";
439 
}
440 
 
441 
#if defined(HAS_EXECUTION) && SIMPLE_EXECUTION
442 
void
443 
l_none(struct iqueue_entry *current)
444 
{
445 
}
446 
#elif defined(HAS_EXECUTION) && DYNAMIC_EXECUTION
447 
void
448 
l_none(struct op_queue *opq, int *param_t, orreg_t *param, int delay_slot)
449 
{
450 
}
451 
#else
452 
void
453 
l_none (void)
454 
{
455 
}
456 
#endif
457 
 
458 
/* Finite automata for instruction decoding building code.  */
459 
 
460 
/* Find simbols in encoding.  */
461 
 
462 
unsigned long
463 
insn_extract (char param_ch, char *enc_initial)
464 
{
465 
  char *enc;
466 
  unsigned long ret = 0;
467 
  unsigned opc_pos = 32;
468 
 
469 
  for (enc = enc_initial; *enc != '\0'; )
470 
    if ((*enc == '0') && (*(enc + 1) == 'x'))
471 
      {
472 
        unsigned long tmp = strtol (enc+2, NULL, 16);
473 
 
474 
        opc_pos -= 4;
475 
        if (param_ch == '0' || param_ch == '1')
476 
          {
477 
            if (param_ch == '0')
478 
              tmp = 15 - tmp;
479 
            ret |= tmp << opc_pos;
480 
          }
481 
        enc += 3;
482 
      }
483 
    else
484 
      {
485 
        //if (*enc == '0' || *enc == '1' || *enc == '-' || ISALPHA (*enc))
486 
        if (*enc == '0' || *enc == '1' || *enc == '-' || isalpha (*enc))
487 
          {
488 
            opc_pos--;
489 
            if (param_ch == *enc)
490 
              ret |= 1 << opc_pos;
491 
          }
492 
        enc++;
493 
      }
494 
  return ret;
495 
}
496 
 
497 
#define MAX_AUTOMATA_SIZE  1200
498 
#define MAX_OP_TABLE_SIZE  1200
499 
#define MAX_LEN            8
500 
 
501 
#ifndef MIN
502 
#define MIN(x, y)          ((x) < (y) ? (x) : (y))
503 
#endif
504 
 
505 
unsigned long *automata;
506 
int nuncovered;
507 
int curpass = 0;
508 
 
509 
/* MM: Struct that hold runtime build information about instructions.  */
510 
struct temp_insn_struct *ti;
511 
 
512 
struct insn_op_struct *op_data, **op_start;
513 
 
514 
/* Recursive utility function used to find best match and to build automata.  */
515 
 
516 
static unsigned long *
517 
cover_insn (unsigned long * cur, int pass, unsigned int mask)
518 
{
519 
  int best_first = 0, last_match = -1, ninstr = 0;
520 
  unsigned int best_len = 0;
521 
  unsigned int i;
522 
  unsigned long cur_mask = mask;
523 
  unsigned long *next;
524 
 
525 
  for (i = 0; i < or32_num_opcodes; i++)
526 
    if (ti[i].in_pass == pass)
527 
      {
528 
        cur_mask &= ti[i].insn_mask;
529 
        ninstr++;
530 
        last_match = i;
531 
      }
532 
 
533 
  debug (8, "%08X %08lX\n", mask, cur_mask);
534 
 
535 
  if (ninstr == 0)
536 
    return 0;
537 
 
538 
  if (ninstr == 1)
539 
    {
540 
      /* Leaf holds instruction index.  */
541 
      debug (8, "%li>I%i %s\n",
542 
             (long)(cur - automata), last_match, or32_opcodes[last_match].name);
543 
 
544 
      *cur = LEAF_FLAG | last_match;
545 
      cur++;
546 
      nuncovered--;
547 
    }
548 
  else
549 
    {
550 
      /* Find longest match.  */
551 
      for (i = 0; i < 32; i++)
552 
        {
553 
          unsigned int len;
554 
 
555 
          for (len = best_len + 1; len < MIN (MAX_LEN, 33 - i); len++)
556 
            {
557 
              unsigned long m = (1UL << ((unsigned long) len)) - 1;
558 
 
559 
              debug (9, " (%i(%08lX & %08lX>>%i = %08lX, %08lX)",
560 
                     len,m, cur_mask, i, (cur_mask >> (unsigned)i),
561 
                     (cur_mask >> (unsigned) i) & m);
562 
 
563 
              if ((m & (cur_mask >> (unsigned) i)) == m)
564 
                {
565 
                  best_len = len;
566 
                  best_first = i;
567 
                  debug (9, "!");
568 
                }
569 
              else
570 
                break;
571 
            }
572 
        }
573 
 
574 
      debug (9, "\n");
575 
 
576 
      if (!best_len)
577 
        {
578 
          fprintf (stderr, "%i instructions match mask 0x%08X:\n", ninstr, mask);
579 
 
580 
          for (i = 0; i < or32_num_opcodes; i++)
581 
            if (ti[i].in_pass == pass)
582 
              fprintf (stderr, "%s ", or32_opcodes[i].name);
583 
 
584 
          fprintf (stderr, "\n");
585 
          exit (1);
586 
        }
587 
 
588 
      debug (8, "%li> #### %i << %i (%i) ####\n",
589 
             (long)(cur - automata), best_len, best_first, ninstr);
590 
 
591 
      *cur = best_first;
592 
      cur++;
593 
      *cur = (1 << best_len) - 1;
594 
      cur++;
595 
      next = cur;
596 
 
597 
      /* Allocate space for pointers.  */
598 
      cur += 1 << best_len;
599 
      cur_mask = (1 << (unsigned long) best_len) - 1;
600 
 
601 
      for (i = 0; i < ((unsigned) 1 << best_len); i++)
602 
        {
603 
          unsigned int j;
604 
          unsigned long *c;
605 
 
606 
          curpass++;
607 
          for (j = 0; j < or32_num_opcodes; j++)
608 
            if (ti[j].in_pass == pass
609 
                && ((ti[j].insn >> best_first) & cur_mask) == (unsigned long) i
610 
                && ((ti[j].insn_mask >> best_first) & cur_mask) == cur_mask)
611 
              ti[j].in_pass = curpass;
612 
 
613 
          debug (9, "%08X %08lX %i\n", mask, cur_mask, best_first);
614 
          c = cover_insn (cur, curpass, mask & (~(cur_mask << best_first)));
615 
          if (c)
616 
            {
617 
              debug (8, "%li> #%X -> %lu\n", (long)(next - automata), i, (long)(cur - automata));
618 
              *next = cur - automata;
619 
              cur = c;
620 
            }
621 
          else
622 
            {
623 
              debug (8, "%li> N/A\n", (long)(next - automata));
624 
              *next = 0;
625 
            }
626 
          next++;
627 
        }
628 
    }
629 
  return cur;
630 
}
631 
 
632 
/* Returns number of nonzero bits.  */
633 
 
634 
static int
635 
num_ones (unsigned long value)
636 
{
637 
  int c = 0;
638 
 
639 
  while (value)
640 
    {
641 
      if (value & 1)
642 
        c++;
643 
      value >>= 1;
644 
    }
645 
  return c;
646 
}
647 
 
648 
/* Utility function, which converts parameters from or32_opcode
649 
   format to more binary form.  Parameters are stored in ti struct.  */
650 
 
651 
static struct insn_op_struct *
652 
parse_params (const struct or32_opcode * opcode,
653 
              struct insn_op_struct * cur)
654 
{
655 
  char *args = opcode->args;
656 
  int i, type;
657 
  int num_cur_op = 0;
658 
 
659 
  i = 0;
660 
  type = 0;
661 
  /* In case we don't have any parameters, we add dummy read from r0.  */
662 
 
663 
  if (!(*args))
664 
    {
665 
      cur->type = OPTYPE_REG | OPTYPE_OP | OPTYPE_LAST;
666 
      cur->data = 0;
667 
      debug (9, "#%08lX %08lX\n", cur->type, cur->data);
668 
      cur++;
669 
      return cur;
670 
  }
671 
 
672 
  while (*args != '\0')
673 
    {
674 
      if (*args == 'r')
675 
        {
676 
          args++;
677 
          type |= OPTYPE_REG;
678 
    if (*args == 'D')
679 
      type |= OPTYPE_DST;
680 
        }
681 
      //else if (ISALPHA (*args))
682 
      else if (isalpha (*args))
683 
        {
684 
          unsigned long arg;
685 
 
686 
          arg = insn_extract (*args, opcode->encoding);
687 
          debug (9, "%s : %08lX ------\n", opcode->name, arg);
688 
          if (letter_signed (*args))
689 
            {
690 
              type |= OPTYPE_SIG;
691 
              type |= ((num_ones (arg) - 1) << OPTYPE_SBIT_SHR) & OPTYPE_SBIT;
692 
            }
693 
 
694 
    num_cur_op = 0;
695 
          /* Split argument to sequences of consecutive ones.  */
696 
          while (arg)
697 
            {
698 
              int shr = 0;
699 
              unsigned long tmp = arg, mask = 0;
700 
 
701 
              while ((tmp & 1) == 0)
702 
                {
703 
                  shr++;
704 
                  tmp >>= 1;
705 
                }
706 
              while (tmp & 1)
707 
                {
708 
                  mask++;
709 
                  tmp >>= 1;
710 
                }
711 
              cur->type = type | shr;
712 
              cur->data = mask;
713 
              arg &= ~(((1 << mask) - 1) << shr);
714 
              debug (6, "|%08lX %08lX\n", cur->type, cur->data);
715 
              cur++;
716 
        num_cur_op++;
717 
            }
718 
          args++;
719 
        }
720 
      else if (*args == '(')
721 
        {
722 
          /* Next param is displacement.
723 
             Later we will treat them as one operand.  */
724 
    /* Set the OPTYPE_DIS flag on all insn_op_structs that belong to this
725 
     * operand */
726 
    while(num_cur_op > 0) {
727 
            cur[-num_cur_op].type |= type | OPTYPE_DIS;
728 
      num_cur_op--;
729 
    }
730 
    cur[-1].type |= OPTYPE_OP;
731 
          debug(9, ">%08X %08X\n", cur->type, cur->data);
732 
          type = 0;
733 
          i++;
734 
          args++;
735 
        }
736 
      else if (*args == OPERAND_DELIM)
737 
        {
738 
          cur--;
739 
          cur->type = type | cur->type | OPTYPE_OP;
740 
          debug (9, ">%08lX %08lX\n", cur->type, cur->data);
741 
          cur++;
742 
          type = 0;
743 
          i++;
744 
          args++;
745 
        }
746 
      else if (*args == '0')
747 
        {
748 
          cur->type = type;
749 
          cur->data = 0;
750 
          debug (9, ">%08lX %08lX\n", cur->type, cur->data);
751 
          cur++;
752 
          type = 0;
753 
          i++;
754 
          args++;
755 
        }
756 
      else if (*args == ')')
757 
        args++;
758 
      else
759 
        {
760 
          fprintf (stderr, "%s : parse error in args.\n", opcode->name);
761 
          exit (1);
762 
        }
763 
    }
764 
 
765 
  cur--;
766 
  cur->type = type | cur->type | OPTYPE_OP | OPTYPE_LAST;
767 
  debug (9, "#%08lX %08lX\n", cur->type, cur->data);
768 
  cur++;
769 
 
770 
  return cur;
771 
}
772 
 
773 
/* Constructs new automata based on or32_opcodes array.  */
774 
 
775 
void
776 
build_automata (void)
777 
{
778 
  unsigned int i;
779 
  unsigned long *end;
780 
  struct insn_op_struct *cur;
781 
 
782 
  automata = malloc (MAX_AUTOMATA_SIZE * sizeof (unsigned long));
783 
  ti = malloc (sizeof (struct temp_insn_struct) * or32_num_opcodes);
784 
 
785 
  nuncovered = or32_num_opcodes;
786 
  printf ("Building automata... ");
787 
  /* Build temporary information about instructions.  */
788 
  for (i = 0; i < or32_num_opcodes; i++)
789 
    {
790 
      unsigned long ones, zeros;
791 
      char *encoding = or32_opcodes[i].encoding;
792 
 
793 
      ones  = insn_extract('1', encoding);
794 
      zeros = insn_extract('0', encoding);
795 
 
796 
      ti[i].insn_mask = ones | zeros;
797 
      ti[i].insn = ones;
798 
      ti[i].in_pass = curpass = 0;
799 
 
800 
      /*debug(9, "%s: %s %08X %08X\n", or32_opcodes[i].name,
801 
        or32_opcodes[i].encoding, ti[i].insn_mask, ti[i].insn);*/
802 
    }
803 
 
804 
  /* Until all are covered search for best criteria to separate them.  */
805 
  end = cover_insn (automata, curpass, 0xFFFFFFFF);
806 
 
807 
  if (end - automata > MAX_AUTOMATA_SIZE)
808 
    {
809 
      fprintf (stderr, "Automata too large. Increase MAX_AUTOMATA_SIZE.");
810 
      exit (1);
811 
    }
812 
 
813 
  printf ("done, num uncovered: %i/%i.\n", nuncovered, or32_num_opcodes);
814 
  printf ("Parsing operands data... ");
815 
 
816 
  op_data = malloc (MAX_OP_TABLE_SIZE * sizeof (struct insn_op_struct));
817 
  op_start = malloc (or32_num_opcodes * sizeof (struct insn_op_struct *));
818 
  cur = op_data;
819 
 
820 
  for (i = 0; i < or32_num_opcodes; i++)
821 
    {
822 
      op_start[i] = cur;
823 
      cur = parse_params (&or32_opcodes[i], cur);
824 
 
825 
      if (cur - op_data > MAX_OP_TABLE_SIZE)
826 
        {
827 
          fprintf (stderr, "Operands table too small, increase MAX_OP_TABLE_SIZE.\n");
828 
          exit (1);
829 
        }
830 
    }
831 
  printf ("done.\n");
832 
}
833 
 
834 
void
835 
destruct_automata (void)
836 
{
837 
  free (ti);
838 
  free (automata);
839 
  free (op_data);
840 
  free (op_start);
841 
}
842 
 
843 
/* Decodes instruction and returns instruction index.  */
844 
 
845 
int
846 
insn_decode (unsigned int insn)
847 
{
848 
  unsigned long *a = automata;
849 
  int i;
850 
 
851 
  while (!(*a & LEAF_FLAG))
852 
    {
853 
      unsigned int first = *a;
854 
 
855 
      debug (9, "%li ", (long)(a - automata));
856 
 
857 
      a++;
858 
      i = (insn >> first) & *a;
859 
      a++;
860 
      if (!*(a + i))
861 
        {
862 
          /* Invalid instruction found?  */
863 
          debug (9, "XXX\n");
864 
          return -1;
865 
        }
866 
      a = automata + *(a + i);
867 
    }
868 
 
869 
  i = *a & ~LEAF_FLAG;
870 
 
871 
  debug (9, "%i\n", i);
872 
 
873 
  /* Final check - do we have direct match?
874 
     (based on or32_opcodes this should be the only possibility,
875 
     but in case of invalid/missing instruction we must perform a check)  */
876 
  if ((ti[i].insn_mask & insn) == ti[i].insn)
877 
    return i;
878 
  else
879 
    return -1;
880 
}
881 
 
882 
static char disassembled_str[50];
883 
char *disassembled = &disassembled_str[0];
884 
 
885 
/* Automagically does zero- or sign- extension and also finds correct
886 
   sign bit position if sign extension is correct extension. Which extension
887 
   is proper is figured out from letter description.  */
888 
 
889 
unsigned long
890 
extend_imm (unsigned long imm, char l)
891 
{
892 
  unsigned long mask;
893 
  int letter_bits;
894 
 
895 
  /* First truncate all bits above valid range for this letter
896 
     in case it is zero extend.  */
897 
  letter_bits = letter_range (l);
898 
  mask = (1 << letter_bits) - 1;
899 
  imm &= mask;
900 
 
901 
  /* Do sign extend if this is the right one.  */
902 
  if (letter_signed(l) && (imm >> (letter_bits - 1)))
903 
    imm |= (~mask);
904 
 
905 
  return imm;
906 
}
907 
 
908 
static unsigned long
909 
or32_extract (char param_ch, char *enc_initial, unsigned long insn)
910 
{
911 
  char *enc;
912 
  unsigned long ret = 0;
913 
  int opc_pos = 0;
914 
  int param_pos = 0;
915 
 
916 
  for (enc = enc_initial; *enc != '\0'; enc++)
917 
    if (*enc == param_ch)
918 
      {
919 
        if (enc - 2 >= enc_initial && (*(enc - 2) == '0') && (*(enc - 1) == 'x'))
920 
          continue;
921 
        else
922 
          param_pos++;
923 
      }
924 
 
925 
#if DEBUG
926 
  printf ("or32_extract: %x ", param_pos);
927 
#endif
928 
  opc_pos = 32;
929 
 
930 
  for (enc = enc_initial; *enc != '\0'; )
931 
    if ((*enc == '0') && (*(enc + 1) == 'x'))
932 
      {
933 
        opc_pos -= 4;
934 
        if ((param_ch == '0') || (param_ch == '1'))
935 
          {
936 
            unsigned long tmp = strtol (enc, NULL, 16);
937 
#if DEBUG
938 
            printf (" enc=%s, tmp=%x ", enc, tmp);
939 
#endif
940 
            if (param_ch == '0')
941 
              tmp = 15 - tmp;
942 
            ret |= tmp << opc_pos;
943 
          }
944 
        enc += 3;
945 
      }
946 
    else if ((*enc == '0') || (*enc == '1'))
947 
      {
948 
        opc_pos--;
949 
        if (param_ch == *enc)
950 
          ret |= 1 << opc_pos;
951 
        enc++;
952 
      }
953 
    else if (*enc == param_ch)
954 
      {
955 
        opc_pos--;
956 
        param_pos--;
957 
#if DEBUG
958 
        printf ("\n  ret=%x opc_pos=%x, param_pos=%x\n", ret, opc_pos, param_pos);
959 
#endif
960 
        //if (ISLOWER (param_ch))
961 
        if (islower (param_ch))
962 
          ret -= ((insn >> opc_pos) & 0x1) << param_pos;
963 
        else
964 
          ret += ((insn >> opc_pos) & 0x1) << param_pos;
965 
        enc++;
966 
      }
967 
  //else if (ISALPHA (*enc))
968 
  else if (isalpha (*enc))
969 
      {
970 
        opc_pos--;
971 
        enc++;
972 
      }
973 
    else if (*enc == '-')
974 
      {
975 
        opc_pos--;
976 
        enc++;
977 
      }
978 
    else
979 
      enc++;
980 
 
981 
#if DEBUG
982 
  printf ("ret=%x\n", ret);
983 
#endif
984 
  return ret;
985 
}
986 
 
987 
/* Print register. Used only by print_insn.  */
988 
 
989 
static char *
990 
or32_print_register (char *dest, char param_ch, char *encoding, unsigned long insn)
991 
{
992 
  int regnum = or32_extract(param_ch, encoding, insn);
993 
 
994 
  sprintf (dest, "r%d", regnum);
995 
  while (*dest) dest++;
996 
  return dest;
997 
}
998 
 
999 
/* Print immediate. Used only by print_insn.  */
1000 
 
1001 
static char *
1002 
or32_print_immediate (char *dest, char param_ch, char *encoding, unsigned long insn)
1003 
{
1004 
  int imm = or32_extract (param_ch, encoding, insn);
1005 
 
1006 
  imm = extend_imm (imm, param_ch);
1007 
 
1008 
  if (letter_signed (param_ch))
1009 
    {
1010 
      if (imm < 0)
1011 
        sprintf (dest, "%d", imm);
1012 
      else
1013 
        sprintf (dest, "0x%x", imm);
1014 
    }
1015 
  else
1016 
    sprintf (dest, "%#x", imm);
1017 
  while (*dest) dest++;
1018 
  return dest;
1019 
}
1020 
 
1021 
/* Disassemble one instruction from insn index.
1022 
   Return the size of the instruction.  */
1023 
 
1024 
int
1025 
disassemble_index (insn, index)
1026 
     unsigned long insn;
1027 
     int index;
1028 
{
1029 
  char *dest = disassembled;
1030 
 
1031 
  if (index >= 0)
1032 
    {
1033 
      struct or32_opcode const *opcode = &or32_opcodes[index];
1034 
      char *s;
1035 
 
1036 
      strcpy (dest, opcode->name);
1037 
      while (*dest) dest++;
1038 
      *dest++ = ' ';
1039 
      *dest = 0;
1040 
 
1041 
      for (s = opcode->args; *s != '\0'; ++s)
1042 
        {
1043 
          switch (*s)
1044 
            {
1045 
            case '\0':
1046 
              return insn_len (insn);
1047 
 
1048 
            case 'r':
1049 
              dest = or32_print_register(dest, *++s, opcode->encoding, insn);
1050 
              break;
1051 
 
1052 
            default:
1053 
              if (strchr (opcode->encoding, *s))
1054 
                dest = or32_print_immediate (dest, *s, opcode->encoding, insn);
1055 
              else {
1056 
                *dest++ = *s;
1057 
                *dest = 0;
1058 
              }
1059 
            }
1060 
        }
1061 
    }
1062 
  else
1063 
    {
1064 
      /* This used to be %8x for binutils.  */
1065 
      sprintf(dest, ".word 0x%08lx", insn);
1066 
      while (*dest) dest++;
1067 
    }
1068 
 
1069 
  return insn_len (insn);
1070 
}
1071 
 
1072 
/* Disassemble one instruction from insn to disassemble.
1073 
   Return the size of the instruction.  */
1074 
 
1075 
int
1076 
disassemble_insn (unsigned long insn)
1077 
{
1078 
  return disassemble_index (insn, insn_decode (insn));
1079 
}
1080 
 

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