A simple virtual machine based on cpu instruction set.Includes some DIY instructions,and it is still updating.
$ git clone https://github.com/Leviathan1995/lvm.git
$ make
$ ./lvm
- 注释使用 '#'
- 格式: 操作码 操作数1 操作数2
- 优先级: 寄存器需要在立即数或内存地址前面 例如 OPADDB AL [10]
| Instruction | Explanation | Example |
|---|---|---|
| OPHALT | stop | OPHALT |
| OPCLEAR | register=0 | OPCLEAR AL |
| OPINIT | id=register | OPINIT i AL |
| OPINITLIST | a={1,2,3,4,5} | OPINITLIST a 1,2,3,4,5 |
| OPASSIGN | id=reg/num | OPASSIGN i 0 |
| OPBINADD | id1=id2+id3 | OPBINADD id1 id2 id3 |
| OPBINSUB | id1=id2-id3 | OPBINSUB id1 id2 id3 |
| OPBINMUL | id1=id2*id3 | OPBINMUL id1 id2 id3 |
| OPBINDIV | id1=id2/id3 | OPBINDIV id1 id2 id3 |
| OPADDB | al=al+[10] | OPADDB AL [10] |
| OPADDVB | al=al+1 | OPADDVB AL 1 |
| OPSUBB | al=al-[10] | OPSUBB AL [10] |
| OPSUBVB | al=al-1 | OPSUBVB AL 1 |
| OPLOAD | al=cl | OPLOAD AL CL |
| OPLOADVB | al=1 | OPLOADVB AL 1 |
| OPSTOREB | [10]=al | OPSTOREB 10 AL |
| OPINC | al=al+1 | OPINC AL |
| OPDEC | al=al-1 | OPDEC AL |
| OPCMPVB | cl cmp 5 | OPCMPVB CL 5 |
| OPJG | if greatet jump to label | OPJG cmp1 cmp2 label |
| OPJNG | if not greater jump to label | OPJNG cmp1 cmp2 label |
| OPPRINTR | output al to terminal | OPPRINTR AL |
| OPPRINTRLIST | output list to terminal | OPPRINTRLIST list |
| OPEND | block end | OPEND block1 |
| OPPAUSE | use debug | OPPAUSE |