source: trunk/libs/newlib/src/include/opcode/or32.h@ 485

Last change on this file since 485 was 444, checked in by satin@…, 8 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
File size: 5.2 KB
Line 
1/* Table of opcodes for the OpenRISC 1000 ISA.
2 Copyright 2002, 2003, 2010 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 3 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
25#ifndef OR32_H_ISA
26#define OR32_H_ISA
27
28#define NUM_UNSIGNED (0)
29#define NUM_SIGNED (1)
30
31#define MAX_GPRS 32
32#define PAGE_SIZE 4096
33#undef __HALF_WORD_INSN__
34
35#define OPERAND_DELIM (',')
36
37#define OR32_IF_DELAY (1)
38#define OR32_W_FLAG (2)
39#define OR32_R_FLAG (4)
40
41struct or32_letter
42{
43 char letter;
44 int sign;
45 /* int reloc; relocation per letter ?? */
46};
47
48/* Main instruction specification array. */
49struct or32_opcode
50{
51 /* Name of the instruction. */
52 char *name;
53
54 /* A string of characters which describe the operands.
55 Valid characters are:
56 ,() Itself. Characters appears in the assembly code.
57 rA Register operand.
58 rB Register operand.
59 rD Register operand.
60 I An immediate operand, range -32768 to 32767.
61 J An immediate operand, range . (unused)
62 K An immediate operand, range 0 to 65535.
63 L An immediate operand, range 0 to 63.
64 M An immediate operand, range . (unused)
65 N An immediate operand, range -33554432 to 33554431.
66 O An immediate operand, range . (unused). */
67 char *args;
68
69 /* Opcode and operand encoding. */
70 char *encoding;
71 void (*exec) (void);
72 unsigned int flags;
73};
74
75#define OPTYPE_LAST (0x80000000)
76#define OPTYPE_OP (0x40000000)
77#define OPTYPE_REG (0x20000000)
78#define OPTYPE_SIG (0x10000000)
79#define OPTYPE_DIS (0x08000000)
80#define OPTYPE_DST (0x04000000)
81#define OPTYPE_SBIT (0x00001F00)
82#define OPTYPE_SHR (0x0000001F)
83#define OPTYPE_SBIT_SHR (8)
84
85/* MM: Data how to decode operands. */
86extern struct insn_op_struct
87{
88 unsigned long type;
89 unsigned long data;
90} **op_start;
91
92#ifdef HAS_EXECUTION
93extern void l_invalid (void);
94extern void l_sfne (void);
95extern void l_bf (void);
96extern void l_add (void);
97extern void l_sw (void);
98extern void l_sb (void);
99extern void l_sh (void);
100extern void l_lwz (void);
101extern void l_lbs (void);
102extern void l_lbz (void);
103extern void l_lhs (void);
104extern void l_lhz (void);
105extern void l_movhi (void);
106extern void l_and (void);
107extern void l_or (void);
108extern void l_xor (void);
109extern void l_sub (void);
110extern void l_mul (void);
111extern void l_div (void);
112extern void l_divu (void);
113extern void l_sll (void);
114extern void l_sra (void);
115extern void l_srl (void);
116extern void l_j (void);
117extern void l_jal (void);
118extern void l_jalr (void);
119extern void l_jr (void);
120extern void l_rfe (void);
121extern void l_nop (void);
122extern void l_bnf (void);
123extern void l_sfeq (void);
124extern void l_sfgts (void);
125extern void l_sfges (void);
126extern void l_sflts (void);
127extern void l_sfles (void);
128extern void l_sfgtu (void);
129extern void l_sfgeu (void);
130extern void l_sfltu (void);
131extern void l_sfleu (void);
132extern void l_mtspr (void);
133extern void l_mfspr (void);
134extern void l_sys (void);
135extern void l_trap (void); /* CZ 21/06/01. */
136extern void l_macrc (void);
137extern void l_mac (void);
138extern void l_msb (void);
139extern void l_invalid (void);
140extern void l_cust1 (void);
141extern void l_cust2 (void);
142extern void l_cust3 (void);
143extern void l_cust4 (void);
144#endif
145extern void l_none (void);
146
147extern const struct or32_letter or32_letters[];
148
149extern const struct or32_opcode or32_opcodes[];
150
151extern const unsigned int or32_num_opcodes;
152
153/* Calculates instruction length in bytes. Always 4 for OR32. */
154extern int insn_len (int);
155
156/* Is individual insn's operand signed or unsigned? */
157extern int letter_signed (char);
158
159/* Number of letters in the individual lettered operand. */
160extern int letter_range (char);
161
162/* MM: Returns index of given instruction name. */
163extern int insn_index (char *);
164
165/* MM: Returns instruction name from index. */
166extern const char *insn_name (int);
167
168/* MM: Constructs new FSM, based on or32_opcodes. */
169extern void build_automata (void);
170
171/* MM: Destructs FSM. */
172extern void destruct_automata (void);
173
174/* MM: Decodes instruction using FSM. Call build_automata first. */
175extern int insn_decode (unsigned int);
176
177/* Disassemble one instruction from insn to disassemble.
178 Return the size of the instruction. */
179int disassemble_insn (unsigned long);
180
181#endif
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