A MIPS emulator compatible with the University of Waterloo dialect of MIPS
This emulates MIPS with some features not available in the CS241 provided emulator.
- In
-verbosemode, each decoded instruction is output along with the registers it's acting upon - Complains when you do things that may be a bad idea (e.g. letting your PC go past the loaded program)
- Registers are passed in as flags
- Warns on use of uninitialized memory or registers
- Single executable with no dependencies
- Fast to startup - it's written in Go, not Java
- Compatibility can't be guaranteed with the MIPS standard, this is an early project
- ???
Pull requests are welcomed.
$ ./mips-emulator -f 0:a2p6.mips -r 1:0x10000 -r 2:3 -m "0x10000:1,2,3" -v
0x00000000: sw $30 (0x0), $2 (0x3) + 0xfffc
0x00000004: sw $30 (0x0), $3 (0x0) + 0xfff8
0x00000008: sw $30 (0x0), $31 (0xfde8) + 0xfff4
0x0000000c: lis $2 (0xc)
... snip snip snip ...
0x00000038: lis $2 (0xc)
0x00000040: add $30 (0xfffffff4 -> 0x0), $30 (0xfffffff4), $2 (0xc)
0x00000044: lw $30 (0x0), $2 (0xc) + 0xfffc
0x00000048: lw $30 (0x0), $3 (0xffff000c) + 0xfff8
0x0000004c: lw $30 (0x0), $31 (0x24) + 0xfff4
0x00000050: jr $31 (0xfde8)
machine dump: program finished cleanly
$ 0: 0x00000000, $ 1: 0x00000005, $ 2: 0x00000000, $ 3: 0x00000005,
$ 4: 0x0000000a, $ 5: 0x00000000, $ 6: 0x00000000, $ 7: 0x00000000,
$ 8: 0x00000000, $ 9: 0x00000000, $10: 0x00000000, $11: 0x00000000,
$12: 0x00000000, $13: 0x00000000, $14: 0x00000000, $15: 0x00000000,
$16: 0x00000000, $17: 0x00000000, $18: 0x00000000, $19: 0x00000000,
$20: 0x00000000, $21: 0x00000000, $22: 0x00000000, $23: 0x00000000,
$24: 0x00000000, $25: 0x00000000, $26: 0x00000000, $27: 0x00000000,
$28: 0x00000000, $29: 0x00000000, $30: 0x00000000, $31: 0x0000fde8,
pc: 0x0000fde8, lo: 0x00000000, hi: 0x00000000