/*
** $Id: lopcodes.h,v 1.6 1997/10/01 20:05:34 roberto Exp roberto $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/

#ifndef lopcodes_h
#define lopcodes_h


/*
** NOTICE: variants of the same opcode (like PUSH0, PUSHBYTE, PUSHWORD) must
** be consecutive: First, those with built-in parameters, then with byte
** parameter and last with word parameter.
*/


typedef enum {
/* name          parm    before          after           side effect
-----------------------------------------------------------------------------*/
ENDCODE,/*	-	-		-  */

PUSHNIL,/*	-	-		nil  */
PUSHNILS,/*	b	-		nil_1...nil_b  */

PUSH0,/*	-	-		0.0  */
PUSH1,/*	-	-		1.0  */
PUSH2,/*	-	-		2.0  */
PUSHBYTE,/*	b	-		(float)b  */
PUSHWORD,/*	w	-		(float)w  */

PUSHCONSTANT0,/*-	-		CNST[0] */
PUSHCONSTANT1,/*-	-		CNST[1] */
PUSHCONSTANT2,/*-	-		CNST[2] */
PUSHCONSTANT3,/*-	-		CNST[3] */
PUSHCONSTANT4,/*-	-		CNST[4] */
PUSHCONSTANT5,/*-	-		CNST[5] */
PUSHCONSTANT6,/*-	-		CNST[6] */
PUSHCONSTANT7,/*-	-		CNST[7] */
PUSHCONSTANT8,/*-	-		CNST[8] */
PUSHCONSTANT9,/*-	-		CNST[9] */
PUSHCONSTANTB,/*b	-		CNST[b] */
PUSHCONSTANT,/* w	-		CNST[w] */

PUSHUPVALUE0,/*	-	-		Closure[0] */
PUSHUPVALUE1,/*	-	-		Closure[1] */
PUSHUPVALUE,/*	b	-		Closure[b] */

PUSHLOCAL0,/*	-	-		LOC[0]  */
PUSHLOCAL1,/*	-	-		LOC[1]  */
PUSHLOCAL2,/*	-	-		LOC[2]  */
PUSHLOCAL3,/*	-	-		LOC[3]  */
PUSHLOCAL4,/*	-	-		LOC[4]  */
PUSHLOCAL5,/*	-	-		LOC[5]  */
PUSHLOCAL6,/*	-	-		LOC[6]  */
PUSHLOCAL7,/*	-	-		LOC[7]  */
PUSHLOCAL8,/*	-	-		LOC[8]  */
PUSHLOCAL9,/*	-	-		LOC[9]  */
PUSHLOCAL,/*	b	-		LOC[b]  */

GETGLOBAL0,/*	-	-		VAR[CNST[0]]  */
GETGLOBAL1,/*	-	-		VAR[CNST[1]]  */
GETGLOBAL2,/*	-	-		VAR[CNST[2]]  */
GETGLOBAL3,/*	-	-		VAR[CNST[3]]  */
GETGLOBAL4,/*	-	-		VAR[CNST[4]]  */
GETGLOBAL5,/*	-	-		VAR[CNST[5]]  */
GETGLOBAL6,/*	-	-		VAR[CNST[6]]  */
GETGLOBAL7,/*	-	-		VAR[CNST[7]]  */
GETGLOBAL8,/*	-	-		VAR[CNST[8]]  */
GETGLOBAL9,/*	-	-		VAR[CNST[9]]  */
GETGLOBALB,/*	b 	-		VAR[CNST[b]]  */
GETGLOBAL,/*	w	-		VAR[CNST[w]]  */

GETTABLE,/*	-	i t		t[i]  */

PUSHSELFB,/*	b	t		t t[CNST[b]]  */
PUSHSELF,/*	w	t		t t[CNST[w]]  */

CREATEARRAYB,/*	b	-		newarray(size = b)  */
CREATEARRAY,/*	w	-		newarray(size = w)  */

SETLOCAL0,/*	-	x		-		LOC[0]=x  */
SETLOCAL1,/*	-	x		-		LOC[1]=x  */
SETLOCAL2,/*	-	x		-		LOC[2]=x  */
SETLOCAL3,/*	-	x		-		LOC[3]=x  */
SETLOCAL4,/*	-	x		-		LOC[4]=x  */
SETLOCAL5,/*	-	x		-		LOC[5]=x  */
SETLOCAL6,/*	-	x		-		LOC[6]=x  */
SETLOCAL7,/*	-	x		-		LOC[7]=x  */
SETLOCAL8,/*	-	x		-		LOC[8]=x  */
SETLOCAL9,/*	-	x		-		LOC[9]=x  */
SETLOCAL,/*	b	x		-		LOC[b]=x  */

SETGLOBALB,/*	b	x		-		VAR[CNST[b]]=x  */
SETGLOBAL,/*	w	x		-		VAR[CNST[w]]=x  */

SETTABLE0,/*	-	v i t		-		t[i]=v  */
SETTABLE,/*	b	v a_b...a_1 i t	a_b...a_1 i t	t[i]=v  */

SETLIST0,/*	b	v_b...v_1 t	-		t[i]=v_i  */
SETLIST,/*	b c	v_b...v_1 t	-		t[i+c*FPF]=v_i  */
SETMAP,/*	b	v_b k_b ...v_1 k_1 t	t	t[k_i]=v_i  */

EQOP,/*		-	y x		(x==y)? 1 : nil  */
NEQOP,/*	-	y x		(x~=y)? 1 : nil  */
LTOP,/*		-	y x		(x<y)? 1 : nil  */
LEOP,/*		-	y x		(x<y)? 1 : nil  */
GTOP,/*		-	y x		(x>y)? 1 : nil  */
GEOP,/*		-	y x		(x>=y)? 1 : nil  */
ADDOP,/*	-	y x		x+y  */
SUBOP,/*	-	y x		x-y  */
MULTOP,/*	-	y x		x*y  */
DIVOP,/*	-	y x		x/y  */
POWOP,/*	-	y x		x^y  */
CONCOP,/*	-	y x		x..y  */
MINUSOP,/*	-	x		-x  */
NOTOP,/*	-	x		(x==nil)? 1 : nil  */

ONTJMP,/*	b	x		(x!=nil)? x : -	(x!=nil)? PC+=b  */
ONFJMP,/*	b	x		(x==nil)? x : -	(x==nil)? PC+=b  */
JMPB,/*		b	-		-		PC+=b  */
JMP,/*		w	-		-		PC+=w  */
IFFJMPB,/*	b	x		-		(x==nil)? PC+=b  */
IFFJMP,/*	w	x		-		(x==nil)? PC+=w  */
IFTUPJMPB,/*	b	x		-		(x!=nil)? PC-=b  */
IFTUPJMP,/*	w	x		-		(x!=nil)? PC-=w  */
IFFUPJMPB,/*	b	x		-		(x==nil)? PC-=b  */
IFFUPJMP,/*	w	x		-		(x==nil)? PC-=w  */

CLOSUREB,/*	b	v_1...v_n	c(CNST[b]) */
CLOSURE,/*	w	v_1...v_n	c(CNST[w]) */

CALLFUNC,/*	b c	v_b...v_1 f	r_c...r_1	f(v1,...,v_b)  */
RETCODE,/*	b	-		-  */
SETLINE,/*	w	-		-		LINE=w  */
POP1,/*		-	-		-		TOP-=1  */
POP2,/*		-	-		-		TOP-=2  */
POPS,/*		b	-		-		TOP-=b  */
ARGS,/*		b	-		-		TOP=BASE+b  */
VARARGS/*	b	v_x...v_1	{v_1...v_x;n=x}	TOP=BASE+b+1  */
} OpCode;


#define RFIELDS_PER_FLUSH 32	/* records (SETMAP) */
#define LFIELDS_PER_FLUSH 64    /* lists (SETLIST) */


#endif