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/*
** TeCGraf - PUC-Rio
** $Id: opcode.h,v 3.23 1996/09/26 21:08:41 roberto Exp roberto $
*/
#ifndef opcode_h
#define opcode_h
#include "lua.h"
#include "types.h"
#include "tree.h"
#include "func.h"
#define FIELDS_PER_FLUSH 40
typedef enum {
/* name parm before after side effect
-----------------------------------------------------------------------------*/
PUSHNIL,/* - nil */
PUSH0,/* - 0.0 */
PUSH1,/* - 1.0 */
PUSH2,/* - 2.0 */
PUSHBYTE,/* b - (float)b */
PUSHWORD,/* w - (float)w */
PUSHFLOAT,/* f - f */
PUSHSTRING,/* w - STR[w] */
PUSHFUNCTION,/* p - FUN(p) */
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,/* w - LOC[w] */
PUSHGLOBAL,/* w - VAR[w] */
PUSHINDEXED,/* i t t[i] */
PUSHSELF,/* w t t t[STR[w]] */
STORELOCAL0,/* x - LOC[0]=x */
STORELOCAL1,/* x - LOC[1]=x */
STORELOCAL2,/* x - LOC[2]=x */
STORELOCAL3,/* x - LOC[3]=x */
STORELOCAL4,/* x - LOC[4]=x */
STORELOCAL5,/* x - LOC[5]=x */
STORELOCAL6,/* x - LOC[6]=x */
STORELOCAL7,/* x - LOC[7]=x */
STORELOCAL8,/* x - LOC[8]=x */
STORELOCAL9,/* x - LOC[9]=x */
STORELOCAL,/* w x - LOC[w]=x */
STOREGLOBAL,/* w x - VAR[w]=x */
STOREINDEXED0,/* v i t - t[i]=v */
STOREINDEXED,/* b v a_b...a_1 i t a_b...a_1 i t t[i]=v */
STORELIST0,/* w v_w...v_1 t - t[i]=v_i */
STORELIST,/* w n v_w...v_1 t - t[i+n*FPF]=v_i */
STORERECORD,/* n
w_n...w_1 v_n...v_1 t - t[STR[w_i]]=v_i */
ADJUST0,/* - - TOP=BASE */
ADJUST,/* b - - TOP=BASE+b */
CREATEARRAY,/* w - newarray(size = w) */
EQOP,/* 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,/* w x - (x!=nil)? PC+=w */
ONFJMP,/* w x - (x==nil)? PC+=w */
JMP,/* w - - PC+=w */
UPJMP,/* w - - PC-=w */
IFFJMP,/* w x - (x==nil)? PC+=w */
IFFUPJMP,/* w x - (x==nil)? PC-=w */
POP,/* x - */
CALLFUNC,/* n m v_n...v_1 f r_m...r_1 f(v1,...,v_n) */
RETCODE0,
RETCODE,/* b - - */
SETLINE,/* w - - LINE=w */
VARARGS/* b v_n...v_1 {v_1...v_n;n=n} */
} OpCode;
#define MULT_RET 255
typedef union
{
lua_CFunction f;
real n;
TaggedString *ts;
TFunc *tf;
struct Hash *a;
void *u;
int i;
} Value;
typedef struct Object
{
lua_Type tag;
Value value;
} Object;
/* Macros to access structure members */
#define tag(o) ((o)->tag)
#define nvalue(o) ((o)->value.n)
#define svalue(o) ((o)->value.ts->str)
#define tsvalue(o) ((o)->value.ts)
#define avalue(o) ((o)->value.a)
#define fvalue(o) ((o)->value.f)
#define uvalue(o) ((o)->value.u)
/* Macros to access symbol table */
#define s_object(i) (lua_table[i].object)
#define s_tag(i) (tag(&s_object(i)))
#define s_nvalue(i) (nvalue(&s_object(i)))
#define s_svalue(i) (svalue(&s_object(i)))
#define s_tsvalue(i) (tsvalue(&s_object(i)))
#define s_avalue(i) (avalue(&s_object(i)))
#define s_fvalue(i) (fvalue(&s_object(i)))
#define s_uvalue(i) (uvalue(&s_object(i)))
#define get_word(code,pc) {memcpy(&code, pc, sizeof(Word)); pc+=sizeof(Word);}
#define get_float(code,pc){memcpy(&code, pc, sizeof(real)); pc+=sizeof(real);}
#define get_code(code,pc) {memcpy(&code, pc, sizeof(TFunc *)); \
pc+=sizeof(TFunc *);}
/* Exported functions */
void lua_parse (TFunc *tf); /* from "lua.stx" module */
void luaI_codedebugline (int line); /* from "lua.stx" module */
void lua_travstack (int (*fn)(Object *));
Object *luaI_Address (lua_Object o);
void luaI_pushobject (Object *o);
void luaI_gcFB (Object *o);
int luaI_dorun (TFunc *tf);
#endif
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