Supported MIPS instructions

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

We will start 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

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

Partially supported instructions

MIPS II conditional traps (#130)

These instructions does not 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

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