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Diffstat (limited to 'src/lopcodes.js')
| -rw-r--r-- | src/lopcodes.js | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/lopcodes.js b/src/lopcodes.js new file mode 100644 index 0000000..b7dfb0f --- /dev/null +++ b/src/lopcodes.js @@ -0,0 +1,109 @@ +/*jshint esversion: 6 */ +"use strict"; + +const OpCodes = [ + "OP_MOVE", /* A B R(A) := R(B) */ + "OP_LOADK", /* A Bx R(A) := Kst(Bx) */ + "OP_LOADKX", /* A R(A) := Kst(extra arg) */ + "OP_LOADBOOL", /* A B C R(A) := (Bool)B; if (C) pc++ */ + "OP_LOADNIL", /* A B R(A), R(A+1), ..., R(A+B) := nil */ + "OP_GETUPVAL", /* A B R(A) := UpValue[B] */ + + "OP_GETTABUP", /* A B C R(A) := UpValue[B][RK(C)] */ + "OP_GETTABLE", /* A B C R(A) := R(B)[RK(C)] */ + + "OP_SETTABUP", /* A B C UpValue[A][RK(B)] := RK(C) */ + "OP_SETUPVAL", /* A B UpValue[B] := R(A) */ + "OP_SETTABLE", /* A B C R(A)[RK(B)] := RK(C) */ + + "OP_NEWTABLE", /* A B C R(A) := {} (size = B,C) */ + + "OP_SELF", /* A B C R(A+1) := R(B); R(A) := R(B)[RK(C)] */ + + "OP_ADD", /* A B C R(A) := RK(B) + RK(C) */ + "OP_SUB", /* A B C R(A) := RK(B) - RK(C) */ + "OP_MUL", /* A B C R(A) := RK(B) * RK(C) */ + "OP_MOD", /* A B C R(A) := RK(B) % RK(C) */ + "OP_POW", /* A B C R(A) := RK(B) ^ RK(C) */ + "OP_DIV", /* A B C R(A) := RK(B) / RK(C) */ + "OP_IDIV", /* A B C R(A) := RK(B) // RK(C) */ + "OP_BAND", /* A B C R(A) := RK(B) & RK(C) */ + "OP_BOR", /* A B C R(A) := RK(B) | RK(C) */ + "OP_BXOR", /* A B C R(A) := RK(B) ~ RK(C) */ + "OP_SHL", /* A B C R(A) := RK(B) << RK(C) */ + "OP_SHR", /* A B C R(A) := RK(B) >> RK(C) */ + "OP_UNM", /* A B R(A) := -R(B) */ + "OP_BNOT", /* A B R(A) := ~R(B) */ + "OP_NOT", /* A B R(A) := not R(B) */ + "OP_LEN", /* A B R(A) := length of R(B) */ + + "OP_CONCAT", /* A B C R(A) := R(B).. ... ..R(C) */ + + "OP_JMP", /* A sBx pc+=sBx; if (A) close all upvalues >= R(A - 1) */ + "OP_EQ", /* A B C if ((RK(B) == RK(C)) ~= A) then pc++ */ + "OP_LT", /* A B C if ((RK(B) < RK(C)) ~= A) then pc++ */ + "OP_LE", /* A B C if ((RK(B) <= RK(C)) ~= A) then pc++ */ + + "OP_TEST", /* A C if not (R(A) <=> C) then pc++ */ + "OP_TESTSET", /* A B C if (R(B) <=> C) then R(A) := R(B) else pc++ */ + + "OP_CALL", /* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */ + "OP_TAILCALL", /* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */ + "OP_RETURN", /* A B return R(A), ... ,R(A+B-2) (see note) */ + + "OP_FORLOOP", /* A sBx R(A)+=R(A+2); + if R(A) <?= R(A+1) then { pc+=sBx; R(A+3)=R(A) }*/ + "OP_FORPREP", /* A sBx R(A)-=R(A+2); pc+=sBx */ + + "OP_TFORCALL", /* A C R(A+3), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2)); */ + "OP_TFORLOOP", /* A sBx if R(A+1) ~= nil then { R(A)=R(A+1); pc += sBx }*/ + + "OP_SETLIST", /* A B C R(A)[(C-1)*FPF+i] := R(A+i), 1 <= i <= B */ + + "OP_CLOSURE", /* A Bx R(A) := closure(KPROTO[Bx]) */ + + "OP_VARARG", /* A B R(A), R(A+1), ..., R(A+B-2) = vararg */ + + "OP_EXTRAARG" /* Ax extra (larger) argument for previous opcode */ +]; + +const SIZE_C = 9; +const SIZE_B = 9; +const SIZE_Bx = (SIZE_C + SIZE_B); +const SIZE_A = 8; +const SIZE_Ax = (SIZE_C + SIZE_B + SIZE_A); +const SIZE_OP = 6; +const POS_OP = 0; +const POS_A = (POS_OP + SIZE_OP); +const POS_C = (POS_A + SIZE_A); +const POS_B = (POS_C + SIZE_C); +const POS_Bx = POS_C; +const POS_Ax = POS_A; +const MAXARG_Bx = ((1 << SIZE_Bx) - 1); +const MAXARG_sBx = (MAXARG_Bx >> 1); /* 'sBx' is signed */ +const MAXARG_Ax = ((1<<SIZE_Ax)-1); +const MAXARG_A = ((1 << SIZE_A) - 1); +const MAXARG_B = ((1 << SIZE_B) - 1); +const MAXARG_C = ((1 << SIZE_C) - 1); + +module.exports = { + OpCodes: OpCodes, + SIZE_C: SIZE_C, + SIZE_B: SIZE_B, + SIZE_Bx: SIZE_Bx, + SIZE_A: SIZE_A, + SIZE_Ax: SIZE_Ax, + SIZE_OP: SIZE_OP, + POS_OP: POS_OP, + POS_A: POS_A, + POS_C: POS_C, + POS_B: POS_B, + POS_Bx: POS_Bx, + POS_Ax: POS_Ax, + MAXARG_Bx: MAXARG_Bx, + MAXARG_sBx: MAXARG_sBx, + MAXARG_Ax: MAXARG_Ax, + MAXARG_A: MAXARG_A, + MAXARG_B: MAXARG_B, + MAXARG_C: MAXARG_C +};
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