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Diffstat (limited to 'src/lua/lopcodes.h')
| -rw-r--r-- | src/lua/lopcodes.h | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/src/lua/lopcodes.h b/src/lua/lopcodes.h deleted file mode 100644 index 59740896..00000000 --- a/src/lua/lopcodes.h +++ /dev/null @@ -1,168 +0,0 @@ -/* -** $Id: lopcodes.h,v 1.5 2004/06/04 13:42:10 neil Exp $ -** Opcodes for Lua virtual machine -** See Copyright Notice in lua.h -*/ - -#ifndef lopcodes_h -#define lopcodes_h - -#include "llimits.h" - - -/*=========================================================================== - We assume that instructions are unsigned numbers. - All instructions have an opcode in the first 6 bits. Moreover, - an instruction can have 0, 1, or 2 arguments. Instructions can - have the following types: - type 0: no arguments - type 1: 1 unsigned argument in the higher bits (called `U') - type 2: 1 signed argument in the higher bits (`S') - type 3: 1st unsigned argument in the higher bits (`A') - 2nd unsigned argument in the middle bits (`B') - - A signed argument is represented in excess K; that is, the number - value is the unsigned value minus K. K is exactly the maximum value - for that argument (so that -max is represented by 0, and +max is - represented by 2*max), which is half the maximum for the corresponding - unsigned argument. - - The size of each argument is defined in `llimits.h'. The usual is an - instruction with 32 bits, U arguments with 26 bits (32-6), B arguments - with 9 bits, and A arguments with 17 bits (32-6-9). For small - installations, the instruction size can be 16, so U has 10 bits, - and A and B have 5 bits each. -===========================================================================*/ - - - - -/* creates a mask with `n' 1 bits at position `p' */ -#define MASK1(n,p) ((~((~(Instruction)0)<<n))<<p) - -/* creates a mask with `n' 0 bits at position `p' */ -#define MASK0(n,p) (~MASK1(n,p)) - -/* -** the following macros help to manipulate instructions -*/ - -#define CREATE_0(o) ((Instruction)(o)) -#define GET_OPCODE(i) ((OpCode)((i)&MASK1(SIZE_OP,0))) -#define SET_OPCODE(i,o) ((i) = (((i)&MASK0(SIZE_OP,0)) | (Instruction)(o))) - -#define CREATE_U(o,u) ((Instruction)(o) | ((Instruction)(u)<<POS_U)) -#define GETARG_U(i) ((int)((i)>>POS_U)) -#define SETARG_U(i,u) ((i) = (((i)&MASK0(SIZE_U,POS_U)) | \ - ((Instruction)(u)<<POS_U))) - -#define CREATE_S(o,s) CREATE_U((o),(s)+MAXARG_S) -#define GETARG_S(i) (GETARG_U(i)-MAXARG_S) -#define SETARG_S(i,s) SETARG_U((i),(s)+MAXARG_S) - - -#define CREATE_AB(o,a,b) ((Instruction)(o) | ((Instruction)(a)<<POS_A) \ - | ((Instruction)(b)<<POS_B)) -#define GETARG_A(i) ((int)((i)>>POS_A)) -#define SETARG_A(i,a) ((i) = (((i)&MASK0(SIZE_A,POS_A)) | \ - ((Instruction)(a)<<POS_A))) -#define GETARG_B(i) ((int)(((i)>>POS_B) & MASK1(SIZE_B,0))) -#define SETARG_B(i,b) ((i) = (((i)&MASK0(SIZE_B,POS_B)) | \ - ((Instruction)(b)<<POS_B))) - - -/* -** K = U argument used as index to `kstr' -** J = S argument used as jump offset (relative to pc of next instruction) -** L = unsigned argument used as index of local variable -** N = U argument used as index to `knum' -*/ - -typedef enum { -/*---------------------------------------------------------------------- -name args stack before stack after side effects -------------------------------------------------------------------------*/ -OP_END,/* - - (return) no results */ -OP_RETURN,/* U v_n-v_x(at u) (return) returns v_x-v_n */ - -OP_CALL,/* A B v_n-v_1 f(at a) r_b-r_1 f(v1,...,v_n) */ -OP_TAILCALL,/* A B v_n-v_1 f(at a) (return) f(v1,...,v_n) */ - -OP_PUSHNIL,/* U - nil_1-nil_u */ -OP_POP,/* U a_u-a_1 - */ - -OP_PUSHINT,/* S - (Number)s */ -OP_PUSHSTRING,/* K - KSTR[k] */ -OP_PUSHNUM,/* N - KNUM[n] */ -OP_PUSHNEGNUM,/* N - -KNUM[n] */ - -OP_PUSHUPVALUE,/* U - Closure[u] */ - -OP_GETLOCAL,/* L - LOC[l] */ -OP_GETGLOBAL,/* K - VAR[KSTR[k]] */ - -OP_GETTABLE,/* - i t t[i] */ -OP_GETDOTTED,/* K t t[KSTR[k]] */ -OP_GETINDEXED,/* L t t[LOC[l]] */ -OP_PUSHSELF,/* K t t t[KSTR[k]] */ - -OP_CREATETABLE,/* U - newarray(size = u) */ - -OP_SETLOCAL,/* L x - LOC[l]=x */ -OP_SETGLOBAL,/* K x - VAR[KSTR[k]]=x */ -OP_SETTABLE,/* A B v a_a-a_1 i t (pops b values) t[i]=v */ - -OP_SETLIST,/* A B v_b-v_1 t t t[i+a*FPF]=v_i */ -OP_SETMAP,/* U v_u k_u - v_1 k_1 t t t[k_i]=v_i */ - -OP_ADD,/* - y x x+y */ -OP_ADDI,/* S x x+s */ -OP_SUB,/* - y x x-y */ -OP_MULT,/* - y x x*y */ -OP_DIV,/* - y x x/y */ -OP_POW,/* - y x x^y */ -OP_CONCAT,/* U v_u-v_1 v1..-..v_u */ -OP_MINUS,/* - x -x */ -OP_NOT,/* - x (x==nil)? 1 : nil */ - -OP_JMPNE,/* J y x - (x~=y)? PC+=s */ -OP_JMPEQ,/* J y x - (x==y)? PC+=s */ -OP_JMPLT,/* J y x - (x<y)? PC+=s */ -OP_JMPLE,/* J y x - (x<y)? PC+=s */ -OP_JMPGT,/* J y x - (x>y)? PC+=s */ -OP_JMPGE,/* J y x - (x>=y)? PC+=s */ - -OP_JMPT,/* J x - (x~=nil)? PC+=s */ -OP_JMPF,/* J x - (x==nil)? PC+=s */ -OP_JMPONT,/* J x (x~=nil)? x : - (x~=nil)? PC+=s */ -OP_JMPONF,/* J x (x==nil)? x : - (x==nil)? PC+=s */ -OP_JMP,/* J - - PC+=s */ - -OP_PUSHNILJMP,/* - - nil PC++; */ - -OP_FORPREP,/* J */ -OP_FORLOOP,/* J */ - -OP_LFORPREP,/* J */ -OP_LFORLOOP,/* J */ - -OP_CLOSURE/* A B v_b-v_1 closure(KPROTO[a], v_1-v_b) */ - -} OpCode; - -#define NUM_OPCODES ((int)OP_CLOSURE+1) - - -#define ISJUMP(o) (OP_JMPNE <= (o) && (o) <= OP_JMP) - - - -/* special code to fit a LUA_MULTRET inside an argB */ -#define MULT_RET 255 /* (<=MAXARG_B) */ -#if MULT_RET>MAXARG_B -#undef MULT_RET -#define MULT_RET MAXARG_B -#endif - - -#endif |