OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [include/] [opcode/] [or32.h] - Blame information for rev 174

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 24 jeremybenn
/* Table of opcodes for the OpenRISC 1000 ISA.
2
   Copyright 2002, 2003 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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
#define MAX_GPRS 32
31
#define PAGE_SIZE 4096
32
#undef __HALF_WORD_INSN__
33
 
34
#define OPERAND_DELIM (',')
35
 
36
#define OR32_IF_DELAY (1)
37
#define OR32_W_FLAG   (2)
38
#define OR32_R_FLAG   (4)
39
 
40
struct or32_letter
41
{
42
  char letter;
43
  int  sign;
44
  /* int  reloc; relocation per letter ??  */
45
};
46
 
47
/* Main instruction specification array.  */
48
struct or32_opcode
49
{
50
  /* Name of the instruction.  */
51
  char *name;
52
 
53
  /* A string of characters which describe the operands.
54
     Valid characters are:
55
     ,() Itself.  Characters appears in the assembly code.
56
     rA  Register operand.
57
     rB  Register operand.
58
     rD  Register operand.
59
     I   An immediate operand, range -32768 to 32767.
60
     J   An immediate operand, range . (unused)
61
     K   An immediate operand, range 0 to 65535.
62
     L   An immediate operand, range 0 to 63.
63
     M   An immediate operand, range . (unused)
64
     N   An immediate operand, range -33554432 to 33554431.
65
     O   An immediate operand, range . (unused).  */
66
  char *args;
67
 
68
  /* Opcode and operand encoding.  */
69
  char *encoding;
70
  void (*exec) (void);
71
  unsigned int flags;
72
};
73
 
74
#define OPTYPE_LAST (0x80000000)
75
#define OPTYPE_OP   (0x40000000)
76
#define OPTYPE_REG  (0x20000000)
77
#define OPTYPE_SIG  (0x10000000)
78
#define OPTYPE_DIS  (0x08000000)
79
#define OPTYPE_DST  (0x04000000)
80
#define OPTYPE_SBIT (0x00001F00)
81
#define OPTYPE_SHR  (0x0000001F)
82
#define OPTYPE_SBIT_SHR (8)
83
 
84
/* MM: Data how to decode operands.  */
85
extern struct insn_op_struct
86
{
87
  unsigned long type;
88
  unsigned long data;
89
} **op_start;
90
 
91
#ifdef HAS_EXECUTION
92
extern void l_invalid (void);
93
extern void l_sfne    (void);
94
extern void l_bf      (void);
95
extern void l_add     (void);
96
extern void l_sw      (void);
97
extern void l_sb      (void);
98
extern void l_sh      (void);
99
extern void l_lwz     (void);
100
extern void l_lbs     (void);
101
extern void l_lbz     (void);
102
extern void l_lhs     (void);
103
extern void l_lhz     (void);
104
extern void l_movhi   (void);
105
extern void l_and     (void);
106
extern void l_or      (void);
107
extern void l_xor     (void);
108
extern void l_sub     (void);
109
extern void l_mul     (void);
110
extern void l_div     (void);
111
extern void l_divu    (void);
112
extern void l_sll     (void);
113
extern void l_sra     (void);
114
extern void l_srl     (void);
115
extern void l_j       (void);
116
extern void l_jal     (void);
117
extern void l_jalr    (void);
118
extern void l_jr      (void);
119
extern void l_rfe     (void);
120
extern void l_nop     (void);
121
extern void l_bnf     (void);
122
extern void l_sfeq    (void);
123
extern void l_sfgts   (void);
124
extern void l_sfges   (void);
125
extern void l_sflts   (void);
126
extern void l_sfles   (void);
127
extern void l_sfgtu   (void);
128
extern void l_sfgeu   (void);
129
extern void l_sfltu   (void);
130
extern void l_sfleu   (void);
131
extern void l_mtspr   (void);
132
extern void l_mfspr   (void);
133
extern void l_sys     (void);
134
extern void l_trap    (void); /* CZ 21/06/01.  */
135
extern void l_macrc   (void);
136
extern void l_mac     (void);
137
extern void l_msb     (void);
138
extern void l_invalid (void);
139
extern void l_cust1   (void);
140
extern void l_cust2   (void);
141
extern void l_cust3   (void);
142
extern void l_cust4   (void);
143
#endif
144
extern void l_none    (void);
145
 
146
extern const struct or32_letter or32_letters[];
147
 
148
extern const struct  or32_opcode or32_opcodes[];
149
 
150
extern const unsigned int or32_num_opcodes;
151
 
152
/* Calculates instruction length in bytes.  Always 4 for OR32.  */
153
extern int insn_len (int);
154
 
155
/* Is individual insn's operand signed or unsigned?  */
156
extern int letter_signed (char);
157
 
158
/* Number of letters in the individual lettered operand.  */
159
extern int letter_range (char);
160
 
161
/* MM: Returns index of given instruction name.  */
162
extern int insn_index (char *);
163
 
164
/* MM: Returns instruction name from index.  */
165
extern const char *insn_name (int);
166
 
167
/* MM: Constructs new FSM, based on or32_opcodes.  */
168
extern void build_automata (void);
169
 
170
/* MM: Destructs FSM.  */
171
extern void destruct_automata (void);
172
 
173
/* MM: Decodes instruction using FSM.  Call build_automata first.  */
174
extern int insn_decode (unsigned int);
175
 
176
/* Disassemble one instruction from insn to disassemble.
177
   Return the size of the instruction.  */
178
int disassemble_insn (unsigned long);
179
 
180
#endif

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.