嵌入式虚拟机CarpVM.zip

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CarpVM 是一个用 C 语言编写的小型虚拟机。可以嵌入在应用程序中使用。 包含的指令集有: HALT (code): Halts and attempts to clean up stack, data memory, and label memory before exiting with given exit code. NOP (): Does nothing. Seriously. LOAD (reg, val): Loads given integer value into given register. MOV (dst, src): Copies contents of src register into dst register. ADD (): Pops the top two integers from the stack and pushes their sum. SUB (): Pops the top two integers from the stack and pushes the difference (lower minus upper). MUL (): Pops the top two integers from the stack and pushes their product. MOD (rega, regb): Computes rega % regb and stores in ERX. NOT (reg): Computes bitwise NOT of reg and stores in reg. XOR (): Pops the top two integers from the stack and XORs them. OR (): Pops the top two integers from the stack and ORs them. AND (): Pops the top two integers from the stack and ANDs them. INCR (reg): Increments value in given register. DECR (reg): Decrements value in given register. INC (): Increments the value at the top of the stack. DEC (): Decrements the value at the top of the stack. PUSHR (reg): Pushes value in given register. PUSH (val): Pushes given value. POP (val): Pops an integer from the stack and dumps it into GBG. CMP (): Pops the top two integers from the stack and checks if equal. 0 means equal. Result will be pushed onto the stack. MOV (rega, regb): Move value in rega to regb. JZ (addr): Jumps to given absolute address if top of the stack is 0. RJZ (diff): Adds differential to current EIP (relative jump) if top of the stack is 0. JNZ (addr): Jumps to given absolute address if top of the stack is not 0. RJNZ (diff): Adds differential to current EIP (relative jump) if top of the stack is not 0. JMP (addr): Jumps to given absolute address. RJMP (diff): Adds differential to current EIP (relative jump). DBS (key, val): Sets data memory at key (string pointer) to given value. DBG (key, reg): Gets value from data memory at key (string pointer) and du

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