MIPS Interpreter

A MIPS-32 interpreter(simulator) written in Rust.

How to run

If no argument, run with REPL

cargo run --release [file...]

Debug run

[ENVIRONMENT VARIABLES] cargo run --release [file...]

( e.g. TOKEN_TRACE=1 REGISTER_TRACE=1 cargo run --release file.asm )

ENVIRONMENT VARIABLES

• TOKEN_TRACE
• DATA_TRACE
• STACK_TRACE
• REGISTER_TRACE
• FP_REGISTER_TRACE

REPL command

• exit ... to exit
• help ... display this message
• dispt ... display tokens
• dispd ... display data
• disps ... display stack
• dispr ... display register
• dispf ... display floating point register

Supported

• Arithmetic, Logic
  • ADD[U]
  • ADDI[U]
  • AND
  • ANDI
  • CLO
  • CLZ
  • DIV[U]
  • MULT[U]
  • MUL
  • MULO[U]
  • MADD[U]
  • MSUB[U]
  • NEG[U]
  • NOR
  • NOT
  • OR
  • ORI
  • REM[U]
  • SLL
  • SLLV
  • SRA
  • SRAV
  • SRL
  • SRLV
  • ROL
  • ROR
  • SUB[U]
  • XOR
  • XORI
• Constant
  • LUI
  • LI
• Comparison
  • SLT[U]
  • SLTI[U]
  • SEQ
  • SGE[U]
  • SGT[U]
  • SLE[U]
  • SNE
• Branch
  • B
  • BEQ
  • BGE[U]
  • BGT[U]
  • BLE[U]
  • BLT[U]
  • BNE
  • BEQZ
  • BGEZ
  • BGTZ
  • BLEZ
  • BLTZ
  • BNEZ
  • BGEZAL
  • BLTZAL
• Jump
  • J
  • JAL
  • JR
  • JALR
• Load
  • LA
  • LB[U]
  • LH[U]
  • LW
• Store
  • SB
  • SH
  • SW
• Transfer
  • MOVE
  • MFHI
  • MFLO
  • MTHI
  • MTLO
  • MOVN
  • MOVZ
• Exception, Interrupt
  • SYSCALL
    • 1: print_int
    • 2: print_float
    • 3: print_double
    • 4: print_string
    • 5: read_int
    • 6: read_float
    • 7: read_double
    • 8: read_string
    • 9: sbrk(allocate heap memory)
    • 10: exit
    • 11: print_character
    • 12: read_character
    • 17: exit2
    • 41: random int
    • 42: random int range
  • BREAK
  • NOP
• Indicate
  • .text
  • .data
  • .globl
  • .align
  • .word
  • .half
  • .byte
  • .float
  • .double
  • .space
  • .ascii[z]
• My own
  • PRTN
  • PRTI
  • PRTH
  • PRTX
  • PRTC
  • PRTS
  • RST
• Floating point
  • LI.S
  • LWC1
  • SWC1
  • MTC1
  • ADD.S
  • DIV.S
  • MUL.S
  • SUB.S
  • CVT.S.W

Note

1. Unsigned integers are not supported, but instead behave as signed integers.
2. If "Debug build", panics when overflow occurs.