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3b16e843 NC |
1 | /* Table of opcodes for the OpenRISC 1000 ISA. |
2 | Copyright 2002 Free Software Foundation, Inc. | |
3 | Contributed by Damjan Lampret (lampret@opencores.org). | |
4 | ||
5 | This file is part of or1k_gen_isa, or1ksim, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | /* We treat all letters the same in encode/decode routines so | |
22 | we need to assign some characteristics to them like signess etc. */ | |
23 | ||
24 | #ifndef OR32_H_ISA | |
25 | #define OR32_H_ISA | |
26 | ||
27 | #define NUM_UNSIGNED (0) | |
28 | #define NUM_SIGNED (1) | |
29 | ||
30 | #ifndef PARAMS | |
31 | #define PARAMS(x) x | |
32 | #endif | |
33 | ||
3b16e843 NC |
34 | #define MAX_GPRS 32 |
35 | #define PAGE_SIZE 4096 | |
36 | #undef __HALF_WORD_INSN__ | |
37 | ||
38 | #define OPERAND_DELIM (',') | |
39 | ||
40 | #define OR32_IF_DELAY (1) | |
41 | #define OR32_W_FLAG (2) | |
42 | #define OR32_R_FLAG (4) | |
43 | ||
44 | struct or32_letter | |
45 | { | |
46 | char letter; | |
47 | int sign; | |
48 | /* int reloc; relocation per letter ?? */ | |
49 | }; | |
50 | ||
51 | /* Main instruction specification array. */ | |
52 | struct or32_opcode | |
53 | { | |
54 | /* Name of the instruction. */ | |
55 | char *name; | |
56 | ||
57 | /* A string of characters which describe the operands. | |
58 | Valid characters are: | |
59 | ,() Itself. Characters appears in the assembly code. | |
60 | rA Register operand. | |
61 | rB Register operand. | |
62 | rD Register operand. | |
63 | I An immediate operand, range -32768 to 32767. | |
64 | J An immediate operand, range . (unused) | |
65 | K An immediate operand, range 0 to 65535. | |
66 | L An immediate operand, range 0 to 63. | |
67 | M An immediate operand, range . (unused) | |
68 | N An immediate operand, range -33554432 to 33554431. | |
69 | O An immediate operand, range . (unused). */ | |
70 | char *args; | |
71 | ||
72 | /* Opcode and operand encoding. */ | |
73 | char *encoding; | |
74 | void (*exec) PARAMS ((void)); | |
75 | unsigned int flags; | |
76 | }; | |
77 | ||
78 | #define OPTYPE_LAST (0x80000000) | |
79 | #define OPTYPE_OP (0x40000000) | |
80 | #define OPTYPE_REG (0x20000000) | |
81 | #define OPTYPE_SIG (0x10000000) | |
82 | #define OPTYPE_DIS (0x08000000) | |
83 | #define OPTYPE_DST (0x04000000) | |
84 | #define OPTYPE_SBIT (0x00001F00) | |
85 | #define OPTYPE_SHR (0x0000001F) | |
86 | #define OPTYPE_SBIT_SHR (8) | |
87 | ||
88 | /* MM: Data how to decode operands. */ | |
89 | extern struct insn_op_struct | |
90 | { | |
91 | unsigned long type; | |
92 | unsigned long data; | |
93 | } **op_start; | |
94 | ||
95 | #ifdef HAS_EXECUTION | |
96 | extern void l_invalid PARAMS ((void)); | |
97 | extern void l_sfne PARAMS ((void)); | |
98 | extern void l_bf PARAMS ((void)); | |
99 | extern void l_add PARAMS ((void)); | |
100 | extern void l_sw PARAMS ((void)); | |
101 | extern void l_sb PARAMS ((void)); | |
102 | extern void l_sh PARAMS ((void)); | |
103 | extern void l_lwz PARAMS ((void)); | |
104 | extern void l_lbs PARAMS ((void)); | |
105 | extern void l_lbz PARAMS ((void)); | |
106 | extern void l_lhs PARAMS ((void)); | |
107 | extern void l_lhz PARAMS ((void)); | |
108 | extern void l_movhi PARAMS ((void)); | |
109 | extern void l_and PARAMS ((void)); | |
110 | extern void l_or PARAMS ((void)); | |
111 | extern void l_xor PARAMS ((void)); | |
112 | extern void l_sub PARAMS ((void)); | |
113 | extern void l_mul PARAMS ((void)); | |
114 | extern void l_div PARAMS ((void)); | |
115 | extern void l_divu PARAMS ((void)); | |
116 | extern void l_sll PARAMS ((void)); | |
117 | extern void l_sra PARAMS ((void)); | |
118 | extern void l_srl PARAMS ((void)); | |
119 | extern void l_j PARAMS ((void)); | |
120 | extern void l_jal PARAMS ((void)); | |
121 | extern void l_jalr PARAMS ((void)); | |
122 | extern void l_jr PARAMS ((void)); | |
123 | extern void l_rfe PARAMS ((void)); | |
124 | extern void l_nop PARAMS ((void)); | |
125 | extern void l_bnf PARAMS ((void)); | |
126 | extern void l_sfeq PARAMS ((void)); | |
127 | extern void l_sfgts PARAMS ((void)); | |
128 | extern void l_sfges PARAMS ((void)); | |
129 | extern void l_sflts PARAMS ((void)); | |
130 | extern void l_sfles PARAMS ((void)); | |
131 | extern void l_sfgtu PARAMS ((void)); | |
132 | extern void l_sfgeu PARAMS ((void)); | |
133 | extern void l_sfltu PARAMS ((void)); | |
134 | extern void l_sfleu PARAMS ((void)); | |
135 | extern void l_mtspr PARAMS ((void)); | |
136 | extern void l_mfspr PARAMS ((void)); | |
137 | extern void l_sys PARAMS ((void)); | |
138 | extern void l_trap PARAMS ((void)); /* CZ 21/06/01. */ | |
139 | extern void l_macrc PARAMS ((void)); | |
140 | extern void l_mac PARAMS ((void)); | |
141 | extern void l_msb PARAMS ((void)); | |
142 | extern void l_invalid PARAMS ((void)); | |
143 | extern void l_cust1 PARAMS ((void)); | |
144 | extern void l_cust2 PARAMS ((void)); | |
145 | extern void l_cust3 PARAMS ((void)); | |
146 | extern void l_cust4 PARAMS ((void)); | |
147 | #endif | |
148 | extern void l_none PARAMS ((void)); | |
149 | ||
150 | extern const struct or32_letter or32_letters[]; | |
151 | ||
152 | extern const struct or32_opcode or32_opcodes[]; | |
153 | ||
154 | extern const unsigned int or32_num_opcodes; | |
155 | ||
156 | /* Calculates instruction length in bytes. Always 4 for OR32. */ | |
157 | extern int insn_len PARAMS ((int)); | |
158 | ||
159 | /* Is individual insn's operand signed or unsigned? */ | |
160 | extern int letter_signed PARAMS ((char)); | |
161 | ||
162 | /* Number of letters in the individual lettered operand. */ | |
163 | extern int letter_range PARAMS ((char)); | |
164 | ||
165 | /* MM: Returns index of given instruction name. */ | |
166 | extern int insn_index PARAMS ((char *)); | |
167 | ||
168 | /* MM: Returns instruction name from index. */ | |
169 | extern const char *insn_name PARAMS ((int)); | |
170 | ||
171 | /* MM: Constructs new FSM, based on or32_opcodes. */ | |
172 | extern void build_automata PARAMS ((void)); | |
173 | ||
174 | /* MM: Destructs FSM. */ | |
175 | extern void destruct_automata PARAMS ((void)); | |
176 | ||
177 | /* MM: Decodes instruction using FSM. Call build_automata first. */ | |
178 | extern int insn_decode PARAMS ((unsigned int)); | |
179 | ||
180 | /* Disassemble one instruction from insn to disassemble. | |
181 | Return the size of the instruction. */ | |
182 | int disassemble_insn PARAMS ((unsigned long)); | |
183 | ||
184 | #endif |