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small corrections in opcodes.

This commit is contained in:
Roberto Ierusalimschy 1999-02-09 13:59:10 -02:00
parent 8b2d97d187
commit ad6c7b0dd4
3 changed files with 30 additions and 17 deletions
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18
lopcodes.h
View File

@ -1,5 +1,5 @@
/*
** $Id: lopcodes.h,v 1.22 1999/02/08 17:07:59 roberto Exp roberto $
** $Id: lopcodes.h,v 1.23 1999/02/08 18:54:19 roberto Exp roberto $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/
@ -21,11 +21,14 @@ ENDCODE,/* - - - */
RETCODE,/* b - - */
PUSHNIL,/* b - nil_0...nil_b */
POP,/* b - - TOP-=(b+1) */
POPDUP,/* b v v TOP-=(b+1) */
POP,/* b - - TOP-=b */
POPDUP,/* b v v TOP-=b */
PUSHNUMBERW,/* w - (float)(w-NUMOFFSET) */
PUSHNUMBER,/* b - (float)(b-NUMOFFSET) */
PUSHNUMBERW,/* w - (float)w */
PUSHNUMBER,/* b - (float)b */
PUSHNEGW,/* w - (float)-w */
PUSHNEG,/* b - (float)-b */
PUSHCONSTANTW,/*w - CNST[w] */
PUSHCONSTANT,/* b - CNST[b] */
@ -57,7 +60,7 @@ SETGLOBALDUPW,/*w x x VAR[CNST[w]]=x */
SETGLOBALDUP,/* b x x VAR[CNST[b]]=x */
SETTABLEPOP,/* - v i t - t[i]=v */
SETTABPPDUP,/* - v i t v t[i]=v */
SETTABLEPOPDUP,/* - v i t v t[i]=v */
SETTABLE,/* b v a_b...a_1 i t a_b...a_1 i t t[i]=v */
SETTABLEDUP,/* b v a_b...a_1 i t v a_b...a_1 i t t[i]=v */
@ -95,6 +98,7 @@ IFTUPJMP,/* b x - (x!=nil)? PC-=b */
IFFUPJMPW,/* w x - (x==nil)? PC-=w */
IFFUPJMP,/* b x - (x==nil)? PC-=b */
CLOSUREW,/* w c v_c...v_1 closure(CNST[w], v_c...v_1) */
CLOSURE,/* b c v_c...v_1 closure(CNST[b], v_c...v_1) */
CALLFUNC,/* b c v_c...v_1 f r_b...r_1 f(v1,...,v_c) */
@ -107,8 +111,6 @@ LONGARG /* b (add b*(1<<16) to arg of next instruction) */
} OpCode;
#define NUMOFFSET 100 /* offset for immediate numbers */
#define RFIELDS_PER_FLUSH 32 /* records (SETMAP) */
#define LFIELDS_PER_FLUSH 64 /* FPF - lists (SETLIST) */

13
lparser.c
View File

@ -1,5 +1,5 @@
/*
** $Id: lparser.c,v 1.17 1999/02/08 17:07:59 roberto Exp roberto $
** $Id: lparser.c,v 1.18 1999/02/08 18:54:19 roberto Exp roberto $
** LL(1) Parser and code generator for Lua
** See Copyright Notice in lua.h
*/
@ -267,9 +267,11 @@ static int real_constant (FuncState *fs, real r) {
static void code_number (LexState *ls, real f) {
if (-NUMOFFSET <= f && f <= (real)(MAX_WORD-NUMOFFSET) &&
(int)f == f) /* f+NUMOFFSET has a short integer value? */
code_oparg(ls, PUSHNUMBER, (int)f+NUMOFFSET, 1);
real af = (f<0) ? -f : f;
if (0 <= af && af <= (real)MAX_WORD && (int)af == af) {
/* abs(f) has a short integer value */
code_oparg(ls, (f<0) ? PUSHNEG : PUSHNUMBER, (int)af, 1);
}
else
code_constant(ls, real_constant(ls->fs, f));
}
@ -474,7 +476,7 @@ static void lua_pushvar (LexState *ls, vardesc *var) {
/* to be used by "storevar" and assignment */
static OpCode set_pop[] = {SETLOCAL, SETGLOBAL, SETTABLEPOP, SETTABLE};
static OpCode set_dup[] = {SETLOCALDUP, SETGLOBALDUP, SETTABPPDUP,
static OpCode set_dup[] = {SETLOCALDUP, SETGLOBALDUP, SETTABLEPOPDUP,
SETTABLEDUP};
@ -563,6 +565,7 @@ static void init_state (LexState *ls, FuncState *fs, TaggedString *filename) {
incr_top;
}
static void close_func (LexState *ls) {
FuncState *fs = ls->fs;
TProtoFunc *f = fs->f;

16
lvm.c
View File

@ -1,5 +1,5 @@
/*
** $Id: lvm.c,v 1.46 1999/02/08 17:07:59 roberto Exp roberto $
** $Id: lvm.c,v 1.47 1999/02/08 18:54:19 roberto Exp roberto $
** Lua virtual machine
** See Copyright Notice in lua.h
*/
@ -355,7 +355,14 @@ StkId luaV_execute (Closure *cl, TProtoFunc *tf, StkId base) {
case PUSHNUMBERW: aux += highbyte(*pc++);
case PUSHNUMBER: aux += *pc++;
ttype(S->top) = LUA_T_NUMBER;
nvalue(S->top) = aux-NUMOFFSET;
nvalue(S->top) = aux;
S->top++;
break;
case PUSHNEGW: aux += highbyte(*pc++);
case PUSHNEG: aux += *pc++;
ttype(S->top) = LUA_T_NUMBER;
nvalue(S->top) = -aux;
S->top++;
break;
@ -429,7 +436,7 @@ StkId luaV_execute (Closure *cl, TProtoFunc *tf, StkId base) {
S->top -= 2; /* pop table and index */
break;
case SETTABPPDUP: {
case SETTABLEPOPDUP: {
TObject temp = *(S->top-1);
luaV_settable(S->top-3);
S->top--; /* pop index (temp goes into "table" position) */
@ -605,7 +612,8 @@ StkId luaV_execute (Closure *cl, TProtoFunc *tf, StkId base) {
if (ttype(--S->top) == LUA_T_NIL) pc -= aux;
break;
case CLOSURE: aux = *pc++;
case CLOSUREW: aux += highbyte(*pc++);
case CLOSURE: aux += *pc++;
*S->top++ = consts[aux];
luaV_closure(*pc++);
luaC_checkGC();