/* MIPS R2000/3000 Instructions */
typedef enum {SPECIAL, REGIMM, J, JAL, BEQ, BNE, BLEZ, BGTZ, ADDI, ADDIU, SLTI,
	  SLTIU, ANDI, ORI, XORI, LUI, COP0, COP1, COP2, COP3,
	  LB=32, LH, LWL, LW, LBU, LHU, LWR,
	  SB=40, SH, SWL, SW, SWR=46,
	  LWC0=48, LWC1, LWC2, LWC3,
	  SWC0=56, SWC1, SWC2, SWC3
	  } opcodefld;
typedef enum { /* SPECIAL function */
    SLL, SRL=2, SRA, SLLV, SRLV=6, SRAV, 
    JR, JALR, SYSCALL=12, BREAK,
    MFHI=16, MTHI, MFLO, MTLO,
    MULT=24, MULTU, DIV, DIVU,
    ADD=32, ADDU, SUB, SUBU, AND, OR, XOR, NOR,
    SLT=42, SLTU
    } specialfld;
enum { BLTZ, BGEZ, BLTZAL=16, BGEZAL}; /* REGIMM rt */
enum { MF=0, CF=2, MT=4, CT=6, BC=8, CO=16, FF_S=16, FF_D, FF_W=20 }; /* COPz rs */
enum { S = 0, D, DUMMY1, DUMMY2, W }; /* COPz res */
enum { BCF, BCT }; /* COPz rt */
/* MIPS R2010/3010 Floating Point Unit */
typedef enum {FADD, FSUB, FMUL, FDIV, FABS=5, FMOV, FNEG, 
	  FCVTS=32, FCVTD, FCVTW=36,
	  C_F=48, CUN, CEQ, CUEQ, COLT, CULT, COLE, CULE,
	  CSF, CNGLE, CSEQ, CNGL,  CLT, CNGE,  CLE, CNGT
	  } functionfld;
typedef enum {COND_UN=0x1, COND_EQ=0x2, COND_LT=0x4, COND_IN=0x8} fpcondcodes;