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u8_disas.h
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#ifndef U8_DISAS_H
#define U8_DISAS_H
#include <r_types.h>
struct u8_cmd
{
int type; // index in instruction table
ut16 opcode; // instruction word
ut16 op1; // first decoded operand
ut16 op2; // second decoded operand
ut16 s_word; // optional second data word
// String of assembly operation mnemonic.
char instr[6];
// String of formatted operands.
char operands[20];
};
int u8_decode_command(const ut8 *instr, int len, struct u8_cmd *cmd);
int u8_decode_opcode(const ut8 *buf, int len, struct u8_cmd *cmd);
int u8_decode_inst(ut16 inst);
// define u8 instructions
#define U8_INS_NUM 159 // 155 + 3 prefix codes + 'unknown'
// Arithmetic instructions
#define U8_ADD_R 0
#define U8_ADD_O 1
#define U8_ADD_ER 2
#define U8_ADD_ER_O 3
#define U8_ADDC_R 4
#define U8_ADDC_O 5
#define U8_AND_R 6
#define U8_AND_O 7
#define U8_CMP_R 8
#define U8_CMP_O 9
#define U8_CMPC_R 10
#define U8_CMPC_O 11
#define U8_MOV_ER 12
#define U8_MOV_ER_O 13
#define U8_MOV_R 14
#define U8_MOV_O 15
#define U8_OR_R 16
#define U8_OR_O 17
#define U8_XOR_R 18
#define U8_XOR_O 19
#define U8_CMP_ER 20
#define U8_SUB_R 21
#define U8_SUBC_R 22
// Shift instructions
#define U8_SLL_R 23
#define U8_SLL_O 24
#define U8_SLLC_R 25
#define U8_SLLC_O 26
#define U8_SRA_R 27
#define U8_SRA_O 28
#define U8_SRL_R 29
#define U8_SRL_O 30
#define U8_SRLC_R 31
#define U8_SRLC_O 32
// Load/store instructions
#define U8_L_ER_EA 33
#define U8_L_ER_EAP 34
#define U8_L_ER_ER 35
#define U8_L_ER_D16_ER 36
#define U8_L_ER_D6_BP 37
#define U8_L_ER_D6_FP 38
#define U8_L_ER_DA 39
#define U8_L_R_EA 40
#define U8_L_R_EAP 41
#define U8_L_R_ER 42
#define U8_L_R_D16_ER 43
#define U8_L_R_D6_BP 44
#define U8_L_R_D6_FP 45
#define U8_L_R_DA 46
#define U8_L_XR_EA 47
#define U8_L_XR_EAP 48
#define U8_L_QR_EA 49
#define U8_L_QR_EAP 50
#define U8_ST_ER_EA 51
#define U8_ST_ER_EAP 52
#define U8_ST_ER_ER 53
#define U8_ST_ER_D16_ER 54
#define U8_ST_ER_D6_BP 55
#define U8_ST_ER_D6_FP 56
#define U8_ST_ER_DA 57
#define U8_ST_R_EA 58
#define U8_ST_R_EAP 59
#define U8_ST_R_ER 60
#define U8_ST_R_D16_ER 61
#define U8_ST_R_D6_BP 62
#define U8_ST_R_D6_FP 63
#define U8_ST_R_DA 64
#define U8_ST_XR_EA 65
#define U8_ST_XR_EAP 66
#define U8_ST_QR_EA 67
#define U8_ST_QR_EAP 68
// Control register access instructions
#define U8_ADD_SP_O 69
#define U8_MOV_ECSR_R 70
#define U8_MOV_ELR_ER 71
#define U8_MOV_EPSW_R 72
#define U8_MOV_ER_ELR 73
#define U8_MOV_ER_SP 74
#define U8_MOV_PSW_R 75
#define U8_MOV_PSW_O 76
#define U8_MOV_R_ECSR 77
#define U8_MOV_R_EPSW 78
#define U8_MOV_R_PSW 79
#define U8_MOV_SP_ER 80
// Push/pop instructions
#define U8_PUSH_ER 81
#define U8_PUSH_QR 82
#define U8_PUSH_R 83
#define U8_PUSH_XR 84
#define U8_PUSH_RL 85
#define U8_POP_ER 86
#define U8_POP_QR 87
#define U8_POP_R 88
#define U8_POP_XR 89
#define U8_POP_RL 90
// Coprocessor data transfer instructions
#define U8_MOV_CR_R 91
#define U8_MOV_CER_EA 92
#define U8_MOV_CER_EAP 93
#define U8_MOV_CR_EA 94
#define U8_MOV_CR_EAP 95
#define U8_MOV_CXR_EA 96
#define U8_MOV_CXR_EAP 97
#define U8_MOV_CQR_EA 98
#define U8_MOV_CQR_EAP 99
#define U8_MOV_R_CR 100
#define U8_MOV_EA_CER 101
#define U8_MOV_EAP_CER 102
#define U8_MOV_EA_CR 103
#define U8_MOV_EAP_CR 104
#define U8_MOV_EA_CXR 105
#define U8_MOV_EAP_CXR 106
#define U8_MOV_EA_CQR 107
#define U8_MOV_EAP_CQR 108
// EA register data transfer instructions
#define U8_LEA_ER 109
#define U8_LEA_D16_ER 110
#define U8_LEA_DA 111
// ALU Instructions
#define U8_DAA_R 112
#define U8_DAS_R 113
#define U8_NEG_R 114
// Bit access instructions
#define U8_SB_R 115
#define U8_SB_DBIT 116
#define U8_RB_R 117
#define U8_RB_DBIT 118
#define U8_TB_R 119
#define U8_TB_DBIT 120
// PSW access instructions
#define U8_EI 121
#define U8_DI 122
#define U8_SC 123
#define U8_RC 124
#define U8_CPLC 125
// Conditional relative branch instructions
#define U8_BGE_RAD 126
#define U8_BLT_RAD 127
#define U8_BGT_RAD 128
#define U8_BLE_RAD 129
#define U8_BGES_RAD 130
#define U8_BLTS_RAD 131
#define U8_BGTS_RAD 132
#define U8_BLES_RAD 133
#define U8_BNE_RAD 134
#define U8_BEQ_RAD 135
#define U8_BNV_RAD 136
#define U8_BOV_RAD 137
#define U8_BPS_RAD 138
#define U8_BNS_RAD 139
#define U8_BAL_RAD 140
// Sign extension instruction
#define U8_EXTBW_ER 141
// Software interrupt instructions
#define U8_SWI_O 142
#define U8_BRK 143
// Branch instructions
#define U8_B_AD 144
#define U8_B_ER 145
#define U8_BL_AD 146
#define U8_BL_ER 147
// Multiplication and division instructions
#define U8_MUL_ER 148
#define U8_DIV_ER 149
// Miscellaneous
#define U8_INC_EA 150
#define U8_DEC_EA 151
#define U8_RT 152
#define U8_RTI 153
#define U8_NOP 154
// DSR prefix for load/store
#define U8_PRE_PSEG 155
#define U8_PRE_DSR 156
#define U8_PRE_R 157
// Undefined
#define U8_ILL 158
typedef struct u8inst_t
{
unsigned int id; // instruction ID
unsigned char name[6]; // mnemonic for instruction
unsigned int len; // 1 or 2 - instruction length in words (16 or 32 bits)
unsigned int ops; // number of operands in word 1
ut8 flags; // flags affected (C, Z, S, OV, MIE, HC)
ut16 ins; // word 1 instruction pattern
ut16 ins_mask; // word 1 instruction mask
ut16 op1_mask; // word 1 first operand mask
ut16 op2_mask; // word 1 second operand mask
ut16 prefix; // DSR load/store prefix
} u8inst_t;
extern u8inst_t u8inst[U8_INS_NUM];
#endif /* U8_DISAS_H */