Mercurial > repos > blastem
annotate 68kinst.h @ 12:db60ed283d8d
Add mising bit instructions to decoder. Add test assembly file containing most distinct instructions.
author | Mike Pavone <pavone@retrodev.com> |
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date | Thu, 15 Nov 2012 00:52:53 -0800 |
parents | 4553fc97b15e |
children | 2bdad0f52f42 |
rev | line source |
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0
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1 #include <stdint.h> |
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2 |
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3 typedef enum { |
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4 BIT_MOVEP_IMMED = 0, |
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5 MOVE_BYTE, |
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6 MOVE_LONG, |
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7 MOVE_WORD, |
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8 MISC, |
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9 QUICK_ARITH_LOOP, |
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10 BRANCH, |
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11 MOVEQ, |
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12 OR_DIV_SBCD, |
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13 SUB_SUBX, |
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14 RESERVED, |
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15 CMP_XOR, |
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16 AND_MUL_ABCD_EXG, |
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17 ADD_ADDX, |
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18 SHIFT_ROTATE, |
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19 COPROC |
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20 } m68k_optypes; |
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21 |
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22 typedef enum { |
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23 M68K_ABCD, |
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24 M68K_ADD, |
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25 M68K_ADDX, |
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26 M68K_AND, |
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27 M68K_ANDI_CCR, |
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28 M68K_ANDI_SR, |
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29 M68K_ASL, |
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30 M68K_ASR, |
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31 M68K_BCC, |
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32 M68K_BCHG, |
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33 M68K_BCLR, |
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34 M68K_BSET, |
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35 M68K_BSR, |
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36 M68K_BTST, |
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37 M68K_CHK, |
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38 M68K_CLR, |
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39 M68K_CMP, |
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40 M68K_DBCC, |
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41 M68K_DIVS, |
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42 M68K_DIVU, |
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43 M68K_EOR, |
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44 M68K_EORI_CCR, |
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45 M68K_EORI_SR, |
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46 M68K_EXG, |
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47 M68K_EXT, |
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48 M68K_ILLEGAL, |
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49 M68K_JMP, |
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50 M68K_JSR, |
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51 M68K_LEA, |
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52 M68K_LINK, |
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53 M68K_LSL, |
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54 M68K_LSR, |
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55 M68K_MOVE, |
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56 M68K_MOVE_CCR, |
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57 M68K_MOVE_FROM_SR, |
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58 M68K_MOVE_SR, |
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59 M68K_MOVE_USP, |
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60 M68K_MOVEM, |
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61 M68K_MOVEP, |
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62 M68K_MULS, |
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63 M68K_MULU, |
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64 M68K_NBCD, |
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65 M68K_NEG, |
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66 M68K_NEGX, |
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67 M68K_NOP, |
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68 M68K_NOT, |
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69 M68K_OR, |
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70 M68K_ORI_CCR, |
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71 M68K_ORI_SR, |
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72 M68K_PEA, |
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73 M68K_RESET, |
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74 M68K_ROL, |
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75 M68K_ROR, |
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76 M68K_ROXL, |
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77 M68K_ROXR, |
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78 M68K_RTE, |
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79 M68K_RTR, |
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80 M68K_RTS, |
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81 M68K_SBCD, |
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82 M68K_SCC, |
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83 M68K_STOP, |
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84 M68K_SUB, |
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85 M68K_SUBX, |
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86 M68K_SWAP, |
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87 M68K_TAS, |
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88 M68K_TRAP, |
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89 M68K_TRAPV, |
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90 M68K_TST, |
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91 M68K_UNLK, |
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92 M68K_INVALID |
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93 } m68K_op; |
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94 |
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95 typedef enum { |
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96 VAR_NORMAL, |
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97 VAR_QUICK, |
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98 VAR_IMMEDIATE, |
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99 VAR_BYTE, |
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100 VAR_WORD, |
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101 VAR_LONG |
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102 } m68K_variant; |
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103 |
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104 typedef enum { |
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105 OPSIZE_BYTE=0, |
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106 OPSIZE_WORD, |
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107 OPSIZE_LONG, |
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108 OPSIZE_INVALID, |
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109 OPSIZE_UNSIZED |
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110 } m68K_opsizes; |
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111 |
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112 typedef enum { |
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113 //actual addressing mode field values |
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114 MODE_REG = 0, |
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115 MODE_AREG, |
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116 MODE_AREG_INDIRECT, |
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117 MODE_AREG_POSTINC, |
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118 MODE_AREG_PREDEC, |
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119 MODE_AREG_DISPLACE, |
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120 MODE_AREG_INDEX_MEM, //bunch of relatively complicated modes |
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121 MODE_PC_INDIRECT_ABS_IMMED, //Modes that use the program counter, an absolute address or immediate value |
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122 //expanded values |
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123 MODE_ABSOLUTE_SHORT, |
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124 MODE_ABSOLUTE, |
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125 MODE_PC_DISPLACE, |
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126 MODE_PC_INDEX, |
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127 MODE_IMMEDIATE, |
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128 MODE_UNUSED |
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129 } m68k_addr_modes; |
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130 |
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131 typedef enum { |
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132 COND_TRUE, |
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133 COND_FALSE, |
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134 COND_HIGH, |
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135 COND_LOW_SAME, |
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136 COND_CARRY_CLR, |
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137 COND_CARRY_SET, |
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138 COND_NOT_EQ, |
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139 COND_EQ, |
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140 COND_OVERF_CLR, |
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141 COND_OVERF_SET, |
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142 COND_PLUS, |
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143 COND_MINUS, |
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144 COND_GREATER_EQ, |
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145 COND_LESS, |
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146 COND_GREATER, |
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147 COND_LESS_EQ |
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148 } m68K_condition; |
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149 |
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150 typedef struct { |
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151 uint8_t addr_mode; |
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152 union { |
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153 struct { |
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154 uint8_t pri; |
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155 uint8_t sec; |
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156 int32_t displacement; |
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157 } regs; |
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158 uint8_t u8; |
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159 uint16_t u16; |
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160 uint32_t u32; |
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161 } params; |
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162 } m68k_op_info; |
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163 |
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164 typedef struct { |
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165 uint8_t op; |
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166 uint8_t variant; |
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167 union { |
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168 uint8_t size; |
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169 uint8_t cond; |
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170 } extra; |
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171 m68k_op_info src; |
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172 m68k_op_info dst; |
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173 } m68kinst; |
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174 |
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175 uint16_t * m68K_decode(uint16_t * istream, m68kinst * dst); |
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176 uint32_t m68k_cycles(m68kinst * inst); |
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177 int m68K_disasm(m68kinst * decoded, char * dst); |
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178 |