1 #ifndef _MIPS_H 2 #define _MIPS_H 3 4 #include "osd_cpu.h" 5 6 enum 7 { 8 MIPS_PC = 1, MIPS_OC, 9 MIPS_HI, MIPS_LO, 10 MIPS_R0, MIPS_R1, 11 MIPS_R2, MIPS_R3, 12 MIPS_R4, MIPS_R5, 13 MIPS_R6, MIPS_R7, 14 MIPS_R8, MIPS_R9, 15 MIPS_R10, MIPS_R11, 16 MIPS_R12, MIPS_R13, 17 MIPS_R14, MIPS_R15, 18 MIPS_R16, MIPS_R17, 19 MIPS_R18, MIPS_R19, 20 MIPS_R20, MIPS_R21, 21 MIPS_R22, MIPS_R23, 22 MIPS_R24, MIPS_R25, 23 MIPS_R26, MIPS_R27, 24 MIPS_R28, MIPS_R29, 25 MIPS_R30, MIPS_R31, 26 MIPS_CP0R0, MIPS_CP0R1, 27 MIPS_CP0R2, MIPS_CP0R3, 28 MIPS_CP0R4, MIPS_CP0R5, 29 MIPS_CP0R6, MIPS_CP0R7, 30 MIPS_CP0R8, MIPS_CP0R9, 31 MIPS_CP0R10, MIPS_CP0R11, 32 MIPS_CP0R12, MIPS_CP0R13, 33 MIPS_CP0R14, MIPS_CP0R15, 34 MIPS_CP0R16, MIPS_CP0R17, 35 MIPS_CP0R18, MIPS_CP0R19, 36 MIPS_CP0R20, MIPS_CP0R21, 37 MIPS_CP0R22, MIPS_CP0R23, 38 MIPS_CP0R24, MIPS_CP0R25, 39 MIPS_CP0R26, MIPS_CP0R27, 40 MIPS_CP0R28, MIPS_CP0R29, 41 MIPS_CP0R30, MIPS_CP0R31 42 }; 43 44 extern int mips_ICount; 45 46 #define MIPS_INT_NONE ( 0 ) 47 #define MIPS_INT1 ( 1 ) 48 #define MIPS_INT2 ( 2 ) 49 #define MIPS_INT3 ( 4 ) 50 #define MIPS_INT4 ( 8 ) 51 #define MIPS_INT5 ( 16 ) 52 #define MIPS_INT6 ( 32 ) 53 #define MIPS_INT7 ( 64 ) 54 #define MIPS_INT8 ( 128 ) 55 56 #define MIPS_BYTE_EXTEND( a ) ( (INT32)(INT8)a ) 57 #define MIPS_WORD_EXTEND( a ) ( (INT32)(INT16)a ) 58 59 #define INS_OP( op ) ( ( op >> 26 ) & 63 ) 60 #define INS_RS( op ) ( ( op >> 21 ) & 31 ) 61 #define INS_RT( op ) ( ( op >> 16 ) & 31 ) 62 #define INS_IMMEDIATE( op ) ( op & 0xffff ) 63 #define INS_TARGET( op ) ( op & 0x3ffffff ) 64 #define INS_RD( op ) ( ( op >> 11 ) & 31 ) 65 #define INS_SHAMT( op ) ( ( op >> 6 ) & 31 ) 66 #define INS_FUNCT( op ) ( op & 63 ) 67 #define INS_CODE( op ) ( ( op >> 6 ) & 0xfffff ) 68 #define INS_CO( op ) ( ( op >> 25 ) & 1 ) 69 #define INS_COFUN( op ) ( op & 0x1ffffff ) 70 #define INS_CF( op ) ( op & 63 ) 71 72 #define GTE_OP( op ) ( op & 0x1f01bff ) 73 #define GTE_SF( op ) ( ( op >> 19 ) & 1 ) 74 #define GTE_MX( op ) ( ( op >> 17 ) & 3 ) 75 #define GTE_V( op ) ( ( op >> 15 ) & 3 ) 76 #define GTE_CV( op ) ( ( op >> 13 ) & 3 ) 77 #define GTE_LM( op ) ( ( op >> 10 ) & 1 ) 78 79 #define OP_SPECIAL ( 0 ) 80 #define OP_REGIMM ( 1 ) 81 #define OP_J ( 2 ) 82 #define OP_JAL ( 3 ) 83 #define OP_BEQ ( 4 ) 84 #define OP_BNE ( 5 ) 85 #define OP_BLEZ ( 6 ) 86 #define OP_BGTZ ( 7 ) 87 #define OP_ADDI ( 8 ) 88 #define OP_ADDIU ( 9 ) 89 #define OP_SLTI ( 10 ) 90 #define OP_SLTIU ( 11 ) 91 #define OP_ANDI ( 12 ) 92 #define OP_ORI ( 13 ) 93 #define OP_XORI ( 14 ) 94 #define OP_LUI ( 15 ) 95 #define OP_COP0 ( 16 ) 96 #define OP_COP1 ( 17 ) 97 #define OP_COP2 ( 18 ) 98 #define OP_LB ( 32 ) 99 #define OP_LH ( 33 ) 100 #define OP_LWL ( 34 ) 101 #define OP_LW ( 35 ) 102 #define OP_LBU ( 36 ) 103 #define OP_LHU ( 37 ) 104 #define OP_LWR ( 38 ) 105 #define OP_SB ( 40 ) 106 #define OP_SH ( 41 ) 107 #define OP_SWL ( 42 ) 108 #define OP_SW ( 43 ) 109 #define OP_SWR ( 46 ) 110 #define OP_LWC1 ( 49 ) 111 #define OP_LWC2 ( 50 ) 112 #define OP_SWC1 ( 57 ) 113 #define OP_SWC2 ( 58 ) 114 115 /* OP_SPECIAL */ 116 #define FUNCT_SLL ( 0 ) 117 #define FUNCT_SRL ( 2 ) 118 #define FUNCT_SRA ( 3 ) 119 #define FUNCT_SLLV ( 4 ) 120 #define FUNCT_SRLV ( 6 ) 121 #define FUNCT_SRAV ( 7 ) 122 #define FUNCT_JR ( 8 ) 123 #define FUNCT_JALR ( 9 ) 124 #define FUNCT_SYSCALL ( 12 ) 125 #define FUNCT_BREAK ( 13 ) 126 #define FUNCT_MFHI ( 16 ) 127 #define FUNCT_MTHI ( 17 ) 128 #define FUNCT_MFLO ( 18 ) 129 #define FUNCT_MTLO ( 19 ) 130 #define FUNCT_MULT ( 24 ) 131 #define FUNCT_MULTU ( 25 ) 132 #define FUNCT_DIV ( 26 ) 133 #define FUNCT_DIVU ( 27 ) 134 #define FUNCT_ADD ( 32 ) 135 #define FUNCT_ADDU ( 33 ) 136 #define FUNCT_SUB ( 34 ) 137 #define FUNCT_SUBU ( 35 ) 138 #define FUNCT_AND ( 36 ) 139 #define FUNCT_OR ( 37 ) 140 #define FUNCT_XOR ( 38 ) 141 #define FUNCT_NOR ( 39 ) 142 #define FUNCT_SLT ( 42 ) 143 #define FUNCT_SLTU ( 43 ) 144 145 /* OP_REGIMM */ 146 #define RT_BLTZ ( 0 ) 147 #define RT_BGEZ ( 1 ) 148 #define RT_BLTZAL ( 16 ) 149 #define RT_BGEZAL ( 17 ) 150 151 /* OP_COP0/OP_COP1/OP_COP2 */ 152 #define RS_MFC ( 0 ) 153 #define RS_CFC ( 2 ) 154 #define RS_MTC ( 4 ) 155 #define RS_CTC ( 6 ) 156 #define RS_BC ( 8 ) 157 158 /* RS_BC */ 159 #define RT_BCF ( 0 ) 160 #define RT_BCT ( 1 ) 161 162 /* OP_COP0 */ 163 #define CF_RFE ( 16 ) 164 165 #ifdef MSB_FIRST 166 #define READ_LONG(a) (READ_WORD(a+2)<<16)|READ_WORD(a) 167 #else 168 #define READ_LONG(a) (*(UINT32 *)(a)) 169 #endif 170 171 #define cpu_readop32(A) READ_LONG(&OP_ROM[A]) 172 extern void mips_stop( void ); 173 174 extern void mips_reset(void *param); 175 extern void mips_exit(void); 176 extern int mips_execute(int cycles); 177 extern unsigned mips_get_context(void *dst); 178 extern void mips_set_context(void *src); 179 extern unsigned mips_get_pc(void); 180 extern unsigned mips_get_op_counter( void ); 181 extern void mips_set_pc(unsigned val); 182 extern unsigned mips_get_sp(void); 183 extern void mips_set_sp(unsigned val); 184 extern unsigned mips_get_reg(int regnum); 185 extern void mips_set_reg(int regnum, unsigned val); 186 extern void mips_set_nmi_line(int linestate); 187 extern void mips_set_irq_line(int irqline, int linestate); 188 extern void mips_set_irq_callback(int (*callback)(int irqline)); 189 extern const char *mips_info(void *context, int regnum); 190 extern unsigned mips_dasm(char *buffer, unsigned pc); 191 192 #endif 193