MIPS Opcodes

MIPS Instruction Formats and Opcode Values. More...

Data Structures
union	InstFmt

'op' field values
#define	OP_SPECIAL   000
#define	OP_REGIMM   001
#define	OP_J   002
#define	OP_JAL   003
#define	OP_BEQ   004
#define	OP_BNE   005
#define	OP_BLEZ   006
#define	OP_BGTZ   007
#define	OP_ADDI   010
#define	OP_ADDIU   011
#define	OP_SLTI   012
#define	OP_SLTIU   013
#define	OP_ANDI   014
#define	OP_ORI   015
#define	OP_XORI   016
#define	OP_LUI   017
#define	OP_COP0   020
#define	OP_COP1   021
#define	OP_COP2   022
#define	OP_BEQL   024
#define	OP_BNEL   025
#define	OP_BLEZL   026
#define	OP_BGTZL   027
#define	OP_DADDI   030
#define	OP_DADDIU   031
#define	OP_LDL   032
#define	OP_LDR   033
#define	OP_LB   040
#define	OP_LH   041
#define	OP_LWL   042
#define	OP_LW   043
#define	OP_LBU   044
#define	OP_LHU   045
#define	OP_LWR   046
#define	OP_LWU   047
#define	OP_SB   050
#define	OP_SH   051
#define	OP_SWL   052
#define	OP_SW   053
#define	OP_SDL   054
#define	OP_SDR   055
#define	OP_SWR   056
#define	OP_CACHE   057
#define	OP_LL   060
#define	OP_LWC1   061
#define	OP_LWC2   062
#define	OP_LLD   064
#define	OP_LDC1   065
#define	OP_LDC2   066
#define	OP_LD   067
#define	OP_SC   070
#define	OP_SWC1   071
#define	OP_SWC2   072
#define	OP_SCD   074
#define	OP_SDC1   075
#define	OP_SDC2   076
#define	OP_SD   077

'func' field values when 'op' == OP_SPECIAL.
#define	OP_SLL   000
#define	OP_SRL   002
#define	OP_SRA   003
#define	OP_SLLV   004
#define	OP_SRLV   006
#define	OP_SRAV   007
#define	OP_JR   010
#define	OP_JALR   011
#define	OP_SYSCALL   014
#define	OP_BREAK   015
#define	OP_SYNC   017
#define	OP_MFHI   020
#define	OP_MTHI   021
#define	OP_MFLO   022
#define	OP_MTLO   023
#define	OP_DSLLV   024
#define	OP_DSRLV   026
#define	OP_DSRAV   027
#define	OP_MULT   030
#define	OP_MULTU   031
#define	OP_DIV   032
#define	OP_DIVU   033
#define	OP_DMULT   034
#define	OP_DMULTU   035
#define	OP_DDIV   036
#define	OP_DDIVU   037
#define	OP_ADD   040
#define	OP_ADDU   041
#define	OP_SUB   042
#define	OP_SUBU   043
#define	OP_AND   044
#define	OP_OR   045
#define	OP_XOR   046
#define	OP_NOR   047
#define	OP_SLT   052
#define	OP_SLTU   053
#define	OP_DADD   054
#define	OP_DADDU   055
#define	OP_DSUB   056
#define	OP_DSUBU   057
#define	OP_TGE   060
#define	OP_TGEU   061
#define	OP_TLT   062
#define	OP_TLTU   063
#define	OP_TEQ   064
#define	OP_TNE   066
#define	OP_DSLL   070
#define	OP_DSRL   072
#define	OP_DSRA   073
#define	OP_DSLL32   074
#define	OP_DSRL32   076
#define	OP_DSRA32   077
#define	OP_BLTZ   000
#define	OP_BGEZ   001
#define	OP_BLTZL   002
#define	OP_BGEZL   003
#define	OP_TGEI   010
#define	OP_TGEIU   011
#define	OP_TLTI   012
#define	OP_TLTIU   013
#define	OP_TEQI   014
#define	OP_TNEI   016
#define	OP_BLTZAL   020
#define	OP_BGEZAL   021
#define	OP_BLTZALL   022
#define	OP_BGEZALL   023

'rs' field values when 'op' == OP_COPz.
#define	OP_MF   000
#define	OP_DMF   001
#define	OP_CF   002
#define	OP_MT   004
#define	OP_DMT   005
#define	OP_CT   006
#define	OP_BC   010

'rt' field values when 'op' == OP_COPz and 'rt' == OP_BC.
#define	COPz_BCF   0x00
#define	COPz_BCT   0x01
#define	COPz_BCFL   0x02
#define	COPz_BCTL   0x03

Instructions with specal significance to debuggers.
#define	BREAK_INSTR   0x0000000d
	instruction code for break
#define	NOP_INSTR   0x00000000
	instruction code for no-op

Detailed Description

MIPS Instruction Formats and Opcode Values.

Macro Definition Documentation

OP_BLTZ

#define OP_BLTZ   000

'func' field values when 'op' == OP_REGIMM.