1 /* Table of opcodes for the OpenRISC 1000 ISA.
2 Copyright 2002 Free Software Foundation, Inc.
3 Contributed by Damjan Lampret (lampret@opencores.org).
5 This file is part of or1k_gen_isa, or1ksim, GDB and GAS.
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.
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.
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. */
21 /* We treat all letters the same in encode/decode routines so
22 we need to assign some characteristics to them like signess etc. */
27 #define NUM_UNSIGNED (0)
28 #define NUM_SIGNED (1)
35 #define PAGE_SIZE 4096
36 #undef __HALF_WORD_INSN__
38 #define OPERAND_DELIM (',')
40 #define OR32_IF_DELAY (1)
41 #define OR32_W_FLAG (2)
42 #define OR32_R_FLAG (4)
48 /* int reloc; relocation per letter ?? */
51 /* Main instruction specification array. */
54 /* Name of the instruction. */
57 /* A string of characters which describe the operands.
59 ,() Itself. Characters appears in the assembly code.
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). */
72 /* Opcode and operand encoding. */
74 void (*exec
) PARAMS ((void));
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)
88 /* MM: Data how to decode operands. */
89 extern struct insn_op_struct
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));
148 extern void l_none
PARAMS ((void));
150 extern const struct or32_letter or32_letters
[];
152 extern const struct or32_opcode or32_opcodes
[];
154 extern const unsigned int or32_num_opcodes
;
156 /* Calculates instruction length in bytes. Always 4 for OR32. */
157 extern int insn_len
PARAMS ((int));
159 /* Is individual insn's operand signed or unsigned? */
160 extern int letter_signed
PARAMS ((char));
162 /* Number of letters in the individual lettered operand. */
163 extern int letter_range
PARAMS ((char));
165 /* MM: Returns index of given instruction name. */
166 extern int insn_index
PARAMS ((char *));
168 /* MM: Returns instruction name from index. */
169 extern const char *insn_name
PARAMS ((int));
171 /* MM: Constructs new FSM, based on or32_opcodes. */
172 extern void build_automata
PARAMS ((void));
174 /* MM: Destructs FSM. */
175 extern void destruct_automata
PARAMS ((void));
177 /* MM: Decodes instruction using FSM. Call build_automata first. */
178 extern int insn_decode
PARAMS ((unsigned int));
180 /* Disassemble one instruction from insn to disassemble.
181 Return the size of the instruction. */
182 int disassemble_insn
PARAMS ((unsigned long));
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