Witch of Git - jade-mouse/blob - toolchain/src/inst.rs

   1 mod decode;
   2 mod encode;
   3
   4 #[derive(Clone, Copy, Debug, PartialOrd, Ord, PartialEq, Eq)]
   5 pub enum Reg {
   6     R0,
   7     R1,
   8     R2,
   9     R3,
  10 }
  11
  12 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
  13 pub enum RegPair {
  14     R1R0,
  15     R3R2,
  16 }
  17
  18 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
  19 pub enum Op1 {
  20     Inc,
  21     Dec,
  22     Neg,
  23     Compl,
  24 }
  25
  26 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
  27 pub enum OpI {
  28     Add7(Imm7),
  29     Sub6(Imm6),
  30     Lsl(Imm3),
  31     Lsr(Imm3),
  32     Asr(Imm3),
  33     Rol(Imm3),
  34     And(Imm8),
  35     Or(Imm8),
  36     Xor(Imm8),
  37 }
  38
  39 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
  40 pub enum Op2 {
  41     Add,
  42     Sub,
  43     And,
  44     Or,
  45     Xor,
  46     // These are preliminary
  47     Lsl,
  48     Rol,
  49     Bic,
  50 }
  51
  52 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
  53 pub struct Imm3(u8);
  54 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
  55 pub struct Imm5(u8);
  56 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
  57 pub struct Imm6(u8);
  58 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
  59 pub struct Imm7(u8);
  60 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
  61 pub struct Imm8(u8);
  62
  63 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
  64 pub enum Addr {
  65     Imm(Imm7),
  66     Off(Reg, Imm5),
  67     One(Reg),
  68     Pair(RegPair),
  69 }
  70
  71 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
  72 pub enum Cond {
  73     Eq,
  74     Ne,
  75     Test,
  76     TestNot,
  77     Lt,
  78     Ult,
  79 }
  80
  81 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
  82 pub enum Inst {
  83     Move(Reg, Reg),
  84     CallR(Reg),
  85     Alu1(Reg, Op1),
  86     Load(Reg, Addr),
  87     Store(Addr, Reg),
  88     JumpR(Reg),
  89     JumpI(Imm8),
  90     CallI(Imm8),
  91     // @TODO: Implement the PartialEq for Cond symmetric in the registers for
  92     // Eq, Ne, Test, and TestNot.
  93     Branch(Cond, Reg, Reg),
  94     AluI(Reg, OpI),
  95     Skip(Reg, Reg),
  96     Alu2(Reg, Op2, Reg),
  97 }