Supported MIPS instructions

Unfortunately, MIPT-MIPS supports reduced subset of MIPS instructions at the moment.

We begin with a list of unsupported instructions as it may be more important. If instruction is not listed as supported or unsupported, it is not supported.

Unsupported Instructions

Multiplication/Division (#21)

• mult
• multu
• div
• divu
• mthi
• mtlo
• mfhi
• mflo

REGIMM branches (#93)

• bltz
• bgez
• bltzal
• bgezal
• bltzl
• bgezl
• bltzall
• bgezall

Unaligned memory access (#132)

• lwl
• lwr
• swl
• swr

MIPS32 bit counts (#137)

• clo
• clz

MIPS IV conditional moves (#92)

• movn
• movz

System call (#122)

• syscall
• break

Double word instructions

• dadd
• daddi
• daddiu
• daddu
• ddiv
• ddivu
• dmult
• dmultu
• dsll
• dsllv
• dsll32
• dsra
• dsra32
• dsrav
• dsrl
• dsrl32
• dsrlv
• dsub
• dsubu
• ld
• ldl
• ldr
• lld
• lwu
• scd
• sd
• sdl
• sdr

Partially supported instructions

MIPS II conditional traps (#130)

These instructions don't cause actual traps now, they print a message to the screen

• tge
• tgeu
• tlt
• tltu
• teq
• tne

MIPS II likely branches (#91)

These branches operate as usual branches, but they don't provide any hint to BPU

• beql
• bnel
• blezl
• bgtzl

Supported Instructions

• add
• addi
• addiu
• addu
• and
• andi
• beq
• bgtz
• blez
• bne
• j
• jal
• jalr
• jr
• lb
• lbu
• lh
• lhu
• lui
• lw
• nor
• or
• ori
• sb
• sh
• sll
• sllv
• slt
• slti
• sltiu
• sltu
• sra
• srav
• srl
• srlv
• sub
• subu
• sw
• xor
• xori