176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* 276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** $Id: lopcodes.h,v 1.142.1.1 2013/04/12 18:48:47 roberto Exp $ 376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** Opcodes for Lua virtual machine 476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** See Copyright Notice in lua.h 576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman*/ 676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifndef lopcodes_h 876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define lopcodes_h 976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 1076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#include "llimits.h" 1176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 1276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 1376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/*=========================================================================== 1476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman We assume that instructions are unsigned numbers. 1576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman All instructions have an opcode in the first 6 bits. 1676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman Instructions can have the following fields: 1776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman `A' : 8 bits 1876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman `B' : 9 bits 1976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman `C' : 9 bits 2076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 'Ax' : 26 bits ('A', 'B', and 'C' together) 2176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman `Bx' : 18 bits (`B' and `C' together) 2276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman `sBx' : signed Bx 2376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 2476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman A signed argument is represented in excess K; that is, the number 2576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman value is the unsigned value minus K. K is exactly the maximum value 2676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman for that argument (so that -max is represented by 0, and +max is 2776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman represented by 2*max), which is half the maximum for the corresponding 2876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman unsigned argument. 2976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman===========================================================================*/ 3076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 3176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 3276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanenum OpMode {iABC, iABx, iAsBx, iAx}; /* basic instruction format */ 3376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 3476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 3576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* 3676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** size and position of opcode arguments. 3776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman*/ 3876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define SIZE_C 9 3976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define SIZE_B 9 4076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define SIZE_Bx (SIZE_C + SIZE_B) 4176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define SIZE_A 8 4276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define SIZE_Ax (SIZE_C + SIZE_B + SIZE_A) 4376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 4476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define SIZE_OP 6 4576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 4676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define POS_OP 0 4776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define POS_A (POS_OP + SIZE_OP) 4876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define POS_C (POS_A + SIZE_A) 4976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define POS_B (POS_C + SIZE_C) 5076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define POS_Bx POS_C 5176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define POS_Ax POS_A 5276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 5376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 5476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* 5576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** limits for opcode arguments. 5676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** we use (signed) int to manipulate most arguments, 5776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** so they must fit in LUAI_BITSINT-1 bits (-1 for sign) 5876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman*/ 5976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#if SIZE_Bx < LUAI_BITSINT-1 6076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define MAXARG_Bx ((1<<SIZE_Bx)-1) 6176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define MAXARG_sBx (MAXARG_Bx>>1) /* `sBx' is signed */ 6276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#else 6376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define MAXARG_Bx MAX_INT 6476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define MAXARG_sBx MAX_INT 6576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 6676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 6776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#if SIZE_Ax < LUAI_BITSINT-1 6876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define MAXARG_Ax ((1<<SIZE_Ax)-1) 6976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#else 7076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define MAXARG_Ax MAX_INT 7176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 7276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 7376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 7476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define MAXARG_A ((1<<SIZE_A)-1) 7576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define MAXARG_B ((1<<SIZE_B)-1) 7676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define MAXARG_C ((1<<SIZE_C)-1) 7776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 7876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 7976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* creates a mask with `n' 1 bits at position `p' */ 8076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define MASK1(n,p) ((~((~(Instruction)0)<<(n)))<<(p)) 8176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 8276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* creates a mask with `n' 0 bits at position `p' */ 8376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define MASK0(n,p) (~MASK1(n,p)) 8476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 8576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* 8676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** the following macros help to manipulate instructions 8776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman*/ 8876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 8976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define GET_OPCODE(i) (cast(OpCode, ((i)>>POS_OP) & MASK1(SIZE_OP,0))) 9076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define SET_OPCODE(i,o) ((i) = (((i)&MASK0(SIZE_OP,POS_OP)) | \ 9176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman ((cast(Instruction, o)<<POS_OP)&MASK1(SIZE_OP,POS_OP)))) 9276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 9376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define getarg(i,pos,size) (cast(int, ((i)>>pos) & MASK1(size,0))) 9476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define setarg(i,v,pos,size) ((i) = (((i)&MASK0(size,pos)) | \ 9576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman ((cast(Instruction, v)<<pos)&MASK1(size,pos)))) 9676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 9776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define GETARG_A(i) getarg(i, POS_A, SIZE_A) 9876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define SETARG_A(i,v) setarg(i, v, POS_A, SIZE_A) 9976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 10076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define GETARG_B(i) getarg(i, POS_B, SIZE_B) 10176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define SETARG_B(i,v) setarg(i, v, POS_B, SIZE_B) 10276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 10376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define GETARG_C(i) getarg(i, POS_C, SIZE_C) 10476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define SETARG_C(i,v) setarg(i, v, POS_C, SIZE_C) 10576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 10676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define GETARG_Bx(i) getarg(i, POS_Bx, SIZE_Bx) 10776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define SETARG_Bx(i,v) setarg(i, v, POS_Bx, SIZE_Bx) 10876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 10976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define GETARG_Ax(i) getarg(i, POS_Ax, SIZE_Ax) 11076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define SETARG_Ax(i,v) setarg(i, v, POS_Ax, SIZE_Ax) 11176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 11276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define GETARG_sBx(i) (GETARG_Bx(i)-MAXARG_sBx) 11376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define SETARG_sBx(i,b) SETARG_Bx((i),cast(unsigned int, (b)+MAXARG_sBx)) 11476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 11576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 11676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define CREATE_ABC(o,a,b,c) ((cast(Instruction, o)<<POS_OP) \ 11776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman | (cast(Instruction, a)<<POS_A) \ 11876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman | (cast(Instruction, b)<<POS_B) \ 11976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman | (cast(Instruction, c)<<POS_C)) 12076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 12176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define CREATE_ABx(o,a,bc) ((cast(Instruction, o)<<POS_OP) \ 12276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman | (cast(Instruction, a)<<POS_A) \ 12376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman | (cast(Instruction, bc)<<POS_Bx)) 12476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 12576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define CREATE_Ax(o,a) ((cast(Instruction, o)<<POS_OP) \ 12676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman | (cast(Instruction, a)<<POS_Ax)) 12776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 12876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 12976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* 13076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** Macros to operate RK indices 13176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman*/ 13276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 13376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* this bit 1 means constant (0 means register) */ 13476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define BITRK (1 << (SIZE_B - 1)) 13576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 13676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* test whether value is a constant */ 13776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define ISK(x) ((x) & BITRK) 13876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 13976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* gets the index of the constant */ 14076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define INDEXK(r) ((int)(r) & ~BITRK) 14176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 14276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define MAXINDEXRK (BITRK - 1) 14376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 14476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* code a constant index as a RK value */ 14576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define RKASK(x) ((x) | BITRK) 14676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 14776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 14876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* 14976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** invalid register that fits in 8 bits 15076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman*/ 15176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define NO_REG MAXARG_A 15276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 15376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 15476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* 15576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** R(x) - register 15676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** Kst(x) - constant (in constant table) 15776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** RK(x) == if ISK(x) then Kst(INDEXK(x)) else R(x) 15876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman*/ 15976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 16076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 16176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* 16276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** grep "ORDER OP" if you change these enums 16376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman*/ 16476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 16576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmantypedef enum { 16676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/*---------------------------------------------------------------------- 16776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanname args description 16876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman------------------------------------------------------------------------*/ 16976d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_MOVE,/* A B R(A) := R(B) */ 17076d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_LOADK,/* A Bx R(A) := Kst(Bx) */ 17176d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_LOADKX,/* A R(A) := Kst(extra arg) */ 17276d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_LOADBOOL,/* A B C R(A) := (Bool)B; if (C) pc++ */ 17376d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_LOADNIL,/* A B R(A), R(A+1), ..., R(A+B) := nil */ 17476d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_GETUPVAL,/* A B R(A) := UpValue[B] */ 17576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 17676d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_GETTABUP,/* A B C R(A) := UpValue[B][RK(C)] */ 17776d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_GETTABLE,/* A B C R(A) := R(B)[RK(C)] */ 17876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 17976d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_SETTABUP,/* A B C UpValue[A][RK(B)] := RK(C) */ 18076d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_SETUPVAL,/* A B UpValue[B] := R(A) */ 18176d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_SETTABLE,/* A B C R(A)[RK(B)] := RK(C) */ 18276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 18376d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_NEWTABLE,/* A B C R(A) := {} (size = B,C) */ 18476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 18576d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_SELF,/* A B C R(A+1) := R(B); R(A) := R(B)[RK(C)] */ 18676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 18776d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_ADD,/* A B C R(A) := RK(B) + RK(C) */ 18876d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_SUB,/* A B C R(A) := RK(B) - RK(C) */ 18976d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_MUL,/* A B C R(A) := RK(B) * RK(C) */ 19076d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_DIV,/* A B C R(A) := RK(B) / RK(C) */ 19176d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_MOD,/* A B C R(A) := RK(B) % RK(C) */ 19276d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_POW,/* A B C R(A) := RK(B) ^ RK(C) */ 19376d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_UNM,/* A B R(A) := -R(B) */ 19476d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_NOT,/* A B R(A) := not R(B) */ 19576d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_LEN,/* A B R(A) := length of R(B) */ 19676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 19776d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_CONCAT,/* A B C R(A) := R(B).. ... ..R(C) */ 19876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 19976d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_JMP,/* A sBx pc+=sBx; if (A) close all upvalues >= R(A) + 1 */ 20076d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_EQ,/* A B C if ((RK(B) == RK(C)) ~= A) then pc++ */ 20176d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_LT,/* A B C if ((RK(B) < RK(C)) ~= A) then pc++ */ 20276d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_LE,/* A B C if ((RK(B) <= RK(C)) ~= A) then pc++ */ 20376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 20476d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_TEST,/* A C if not (R(A) <=> C) then pc++ */ 20576d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_TESTSET,/* A B C if (R(B) <=> C) then R(A) := R(B) else pc++ */ 20676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 20776d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_CALL,/* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */ 20876d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_TAILCALL,/* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */ 20976d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_RETURN,/* A B return R(A), ... ,R(A+B-2) (see note) */ 21076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 21176d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_FORLOOP,/* A sBx R(A)+=R(A+2); 21276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if R(A) <?= R(A+1) then { pc+=sBx; R(A+3)=R(A) }*/ 21376d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_FORPREP,/* A sBx R(A)-=R(A+2); pc+=sBx */ 21476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 21576d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_TFORCALL,/* A C R(A+3), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2)); */ 21676d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_TFORLOOP,/* A sBx if R(A+1) ~= nil then { R(A)=R(A+1); pc += sBx }*/ 21776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 21876d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_SETLIST,/* A B C R(A)[(C-1)*FPF+i] := R(A+i), 1 <= i <= B */ 21976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 22076d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_CLOSURE,/* A Bx R(A) := closure(KPROTO[Bx]) */ 22176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 22276d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_VARARG,/* A B R(A), R(A+1), ..., R(A+B-2) = vararg */ 22376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 22476d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanOP_EXTRAARG/* Ax extra (larger) argument for previous opcode */ 22576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} OpCode; 22676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 22776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 22876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define NUM_OPCODES (cast(int, OP_EXTRAARG) + 1) 22976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 23076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 23176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 23276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/*=========================================================================== 23376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman Notes: 23476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (*) In OP_CALL, if (B == 0) then B = top. If (C == 0), then `top' is 23576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman set to last_result+1, so next open instruction (OP_CALL, OP_RETURN, 23676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman OP_SETLIST) may use `top'. 23776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 23876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (*) In OP_VARARG, if (B == 0) then use actual number of varargs and 23976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman set top (like in OP_CALL with C == 0). 24076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 24176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (*) In OP_RETURN, if (B == 0) then return up to `top'. 24276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 24376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (*) In OP_SETLIST, if (B == 0) then B = `top'; if (C == 0) then next 24476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 'instruction' is EXTRAARG(real C). 24576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 24676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (*) In OP_LOADKX, the next 'instruction' is always EXTRAARG. 24776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 24876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (*) For comparisons, A specifies what condition the test should accept 24976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (true or false). 25076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 25176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (*) All `skips' (pc++) assume that next instruction is a jump. 25276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 25376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman===========================================================================*/ 25476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 25576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 25676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* 25776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** masks for instruction properties. The format is: 25876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** bits 0-1: op mode 25976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** bits 2-3: C arg mode 26076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** bits 4-5: B arg mode 26176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** bit 6: instruction set register A 26276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman** bit 7: operator is a test (next instruction must be a jump) 26376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman*/ 26476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 26576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanenum OpArgMask { 26676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman OpArgN, /* argument is not used */ 26776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman OpArgU, /* argument is used */ 26876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman OpArgR, /* argument is a register or a jump offset */ 26976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman OpArgK /* argument is a constant or register/constant */ 27076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman}; 27176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 27276d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanLUAI_DDEC const lu_byte luaP_opmodes[NUM_OPCODES]; 27376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 27476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define getOpMode(m) (cast(enum OpMode, luaP_opmodes[m] & 3)) 27576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define getBMode(m) (cast(enum OpArgMask, (luaP_opmodes[m] >> 4) & 3)) 27676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define getCMode(m) (cast(enum OpArgMask, (luaP_opmodes[m] >> 2) & 3)) 27776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define testAMode(m) (luaP_opmodes[m] & (1 << 6)) 27876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define testTMode(m) (luaP_opmodes[m] & (1 << 7)) 27976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 28076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 28176d05dc695b06c4e987bb8078f78032441e1430cGreg HartmanLUAI_DDEC const char *const luaP_opnames[NUM_OPCODES+1]; /* opcode names */ 28276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 28376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 28476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* number of list items to accumulate before a SETLIST instruction */ 28576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define LFIELDS_PER_FLUSH 50 28676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 28776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 28876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 289