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1 /*- |
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2 * Copyright (c) 1992 The Regents of the University of California. |
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3 * All rights reserved. |
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4 * |
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5 * This code is derived from software contributed to Berkeley by |
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6 * Ralph Campbell. |
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7 * |
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8 * Redistribution and use in source and binary forms, with or without |
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9 * modification, are permitted provided that the following conditions |
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10 * are met: |
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11 * 1. Redistributions of source code must retain the above copyright |
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12 * notice, this list of conditions and the following disclaimer. |
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13 * 2. Redistributions in binary form must reproduce the above copyright |
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14 * notice, this list of conditions and the following disclaimer in the |
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15 * documentation and/or other materials provided with the distribution. |
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16 * 3. All advertising materials mentioning features or use of this software |
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17 * must display the following acknowledgement: |
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18 * This product includes software developed by the University of |
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19 * California, Berkeley and its contributors. |
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20 * 4. Neither the name of the University nor the names of its contributors |
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21 * may be used to endorse or promote products derived from this software |
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22 * without specific prior written permission. |
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23 * |
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24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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34 * SUCH DAMAGE. |
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35 * |
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36 * from: @(#)mips_opcode.h 7.1 (Berkeley) 3/19/92 |
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37 * via: mips_opcode.h,v 1.1 1994/03/10 16:15:10 (algorithmics) |
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38 */ |
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39 |
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40 /* |
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41 * Define the instruction formats and opcode values for the |
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42 * MIPS instruction set. |
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43 */ |
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44 |
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45 #ifndef _MIPS_OPCODE_H |
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46 #define _MIPS_OPCODE_H |
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47 |
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48 /* |
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49 * Define the instruction formats. |
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50 */ |
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51 typedef union { |
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52 unsigned word; |
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53 |
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54 #ifdef MIPSEL |
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55 struct { |
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56 unsigned imm: 16; |
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57 unsigned rt: 5; |
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58 unsigned rs: 5; |
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59 unsigned op: 6; |
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60 } IType; |
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61 |
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62 struct { |
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63 unsigned target: 26; |
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64 unsigned op: 6; |
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65 } JType; |
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66 |
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67 struct { |
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68 unsigned func: 6; |
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69 unsigned shamt: 5; |
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70 unsigned rd: 5; |
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71 unsigned rt: 5; |
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72 unsigned rs: 5; |
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73 unsigned op: 6; |
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74 } RType; |
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75 |
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76 struct { |
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77 unsigned func: 6; |
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78 unsigned fd: 5; |
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79 unsigned fs: 5; |
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80 unsigned ft: 5; |
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81 unsigned fmt: 4; |
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82 unsigned : 1; /* always '1' */ |
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83 unsigned op: 6; /* always '0x11' */ |
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84 } FRType; |
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85 #else |
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86 struct { |
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87 unsigned op: 6; |
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88 unsigned rs: 5; |
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89 unsigned rt: 5; |
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90 unsigned imm: 16; |
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91 } IType; |
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92 |
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93 struct { |
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94 unsigned op: 6; |
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95 unsigned target: 26; |
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96 } JType; |
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97 |
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98 struct { |
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99 unsigned op: 6; |
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100 unsigned rs: 5; |
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101 unsigned rt: 5; |
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102 unsigned rd: 5; |
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103 unsigned shamt: 5; |
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104 unsigned func: 6; |
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105 } RType; |
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106 |
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107 struct { |
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108 unsigned op: 6; /* always '0x11' */ |
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109 unsigned : 1; /* always '1' */ |
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110 unsigned fmt: 4; |
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111 unsigned func: 6; |
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112 unsigned ft: 5; |
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113 unsigned fs: 5; |
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114 unsigned fd: 5; |
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115 } FRType; |
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116 #endif |
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117 } InstFmt; |
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118 |
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119 /* |
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120 * Values for the 'op' field. |
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121 */ |
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122 #define OP_SPECIAL 000 |
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123 #define OP_REGIMM 001 |
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124 #define OP_J 002 |
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125 #define OP_JAL 003 |
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126 #define OP_BEQ 004 |
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127 #define OP_BNE 005 |
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128 #define OP_BLEZ 006 |
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129 #define OP_BGTZ 007 |
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130 |
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131 #define OP_ADDI 010 |
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132 #define OP_ADDIU 011 |
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133 #define OP_SLTI 012 |
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134 #define OP_SLTIU 013 |
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135 #define OP_ANDI 014 |
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136 #define OP_ORI 015 |
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137 #define OP_XORI 016 |
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138 #define OP_LUI 017 |
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139 |
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140 #define OP_COP0 020 |
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141 #define OP_COP1 021 |
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142 #define OP_COP2 022 |
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143 #define OP_BEQL 024 |
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144 #define OP_BNEL 025 |
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145 #define OP_BLEZL 026 |
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146 #define OP_BGTZL 027 |
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147 |
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148 #define OP_DADDI 030 |
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149 #define OP_DADDIU 031 |
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150 #define OP_LDL 032 |
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151 #define OP_LDR 033 |
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152 |
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153 #define OP_LB 040 |
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154 #define OP_LH 041 |
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155 #define OP_LWL 042 |
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156 #define OP_LW 043 |
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157 #define OP_LBU 044 |
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158 #define OP_LHU 045 |
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159 #define OP_LWR 046 |
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160 #define OP_LWU 047 |
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161 |
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162 #define OP_SB 050 |
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163 #define OP_SH 051 |
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164 #define OP_SWL 052 |
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165 #define OP_SW 053 |
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166 #define OP_SDL 054 |
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167 #define OP_SDR 055 |
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168 #define OP_SWR 056 |
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169 #define OP_CACHE 057 |
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170 |
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171 #define OP_LL 060 |
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172 #define OP_LWC1 061 |
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173 #define OP_LWC2 062 |
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174 #define OP_LLD 064 |
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175 #define OP_LDC1 065 |
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176 #define OP_LDC2 066 |
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177 #define OP_LD 067 |
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178 |
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179 #define OP_SC 070 |
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180 #define OP_SWC1 071 |
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181 #define OP_SWC2 072 |
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182 #define OP_SCD 074 |
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183 #define OP_SDC1 075 |
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184 #define OP_SDC2 076 |
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185 #define OP_SD 077 |
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186 |
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187 /* |
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188 * Values for the 'func' field when 'op' == OP_SPECIAL. |
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189 */ |
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190 #define OP_SLL 000 |
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191 #define OP_SRL 002 |
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192 #define OP_SRA 003 |
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193 #define OP_SLLV 004 |
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194 #define OP_SRLV 006 |
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195 #define OP_SRAV 007 |
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196 |
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197 #define OP_JR 010 |
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198 #define OP_JALR 011 |
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199 #define OP_SYSCALL 014 |
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200 #define OP_BREAK 015 |
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201 #define OP_SYNC 017 |
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202 |
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203 #define OP_MFHI 020 |
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204 #define OP_MTHI 021 |
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205 #define OP_MFLO 022 |
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206 #define OP_MTLO 023 |
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207 #define OP_DSLLV 024 |
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208 #define OP_DSRLV 026 |
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209 #define OP_DSRAV 027 |
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210 |
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211 #define OP_MULT 030 |
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212 #define OP_MULTU 031 |
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213 #define OP_DIV 032 |
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214 #define OP_DIVU 033 |
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215 #define OP_DMULT 034 |
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216 #define OP_DMULTU 035 |
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217 #define OP_DDIV 036 |
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218 #define OP_DDIVU 037 |
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219 |
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220 #define OP_ADD 040 |
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221 #define OP_ADDU 041 |
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222 #define OP_SUB 042 |
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223 #define OP_SUBU 043 |
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224 #define OP_AND 044 |
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225 #define OP_OR 045 |
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226 #define OP_XOR 046 |
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227 #define OP_NOR 047 |
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228 |
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229 #define OP_SLT 052 |
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230 #define OP_SLTU 053 |
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231 #define OP_DADD 054 |
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232 #define OP_DADDU 055 |
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233 #define OP_DSUB 056 |
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234 #define OP_DSUBU 057 |
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235 |
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236 #define OP_TGE 060 |
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237 #define OP_TGEU 061 |
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238 #define OP_TLT 062 |
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239 #define OP_TLTU 063 |
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240 #define OP_TEQ 064 |
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241 #define OP_TNE 066 |
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242 |
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243 #define OP_DSLL 070 |
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244 #define OP_DSRL 072 |
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245 #define OP_DSRA 073 |
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246 #define OP_DSLL32 074 |
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247 #define OP_DSRL32 076 |
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248 #define OP_DSRA32 077 |
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249 |
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250 /* |
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251 * Values for the 'func' field when 'op' == OP_REGIMM. |
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252 */ |
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253 #define OP_BLTZ 000 |
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254 #define OP_BGEZ 001 |
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255 #define OP_BLTZL 002 |
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256 #define OP_BGEZL 003 |
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257 |
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258 #define OP_TGEI 010 |
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259 #define OP_TGEIU 011 |
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260 #define OP_TLTI 012 |
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261 #define OP_TLTIU 013 |
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262 #define OP_TEQI 014 |
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263 #define OP_TNEI 016 |
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264 |
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265 #define OP_BLTZAL 020 |
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266 #define OP_BGEZAL 021 |
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267 #define OP_BLTZALL 022 |
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268 #define OP_BGEZALL 023 |
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269 |
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270 /* |
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271 * Values for the 'rs' field when 'op' == OP_COPz. |
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272 */ |
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273 #define OP_MF 000 |
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274 #define OP_DMF 001 |
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275 #define OP_CF 002 |
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276 #define OP_MT 004 |
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277 #define OP_DMT 005 |
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278 #define OP_CT 006 |
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279 #define OP_BC 010 |
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280 |
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281 /* |
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282 * Values for the 'rt' field when 'op' == OP_COPz and 'rt' == OP_BC. |
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283 */ |
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284 #define COPz_BCF 0x00 |
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285 #define COPz_BCT 0x01 |
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286 #define COPz_BCFL 0x02 |
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287 #define COPz_BCTL 0x03 |
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288 |
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289 /* |
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290 * Instructions with specal significance to debuggers. |
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291 */ |
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292 #define BREAK_INSTR 0x0005000d /* instruction code for break */ |
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293 #define NOP_INSTR 0x00000000 /* instruction code for no-op */ |
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294 |
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295 #endif /* _MIPS_OPCODE_H */ |
