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#[repr(u8)]
#[allow(non_camel_case_types)]
pub enum Instruction {
MOV_RI = 0x01,
MOV_RR = 0x08,
ADD_RR = 0x02,
ADD_RI = 0x0A,
SUB_RR = 0x03,
SUB_RI = 0x0B,
JMP = 0x04,
JZ = 0x05,
JNZ = 0x06,
CMP_RI = 0x07,
CMP_RR = 0x09,
MUL = 0x0C,
DIV = 0x0D,
CALL = 0x0E,
RET = 0x0F,
SYS = 0x10,
HLT = 0xFF,
}
impl Instruction {
pub fn opcode_name(op: u8) -> &'static str {
match op {
0x01 | 0x08 => "MOV",
0x02 | 0x0A => "ADD",
0x03 | 0x0B => "SUB",
0x04 => "JMP",
0x05 => "JZ",
0x06 => "JNZ",
0x07 | 0x09 => "CMP",
0x0C => "MUL",
0x0D => "DIV",
0x0E => "CALL",
0x0F => "RET",
0x10 => "SYS",
0xFF => "HLT",
_ => "???",
}
}
}
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