mirror of
https://github.com/Rockbox/rockbox.git
synced 2025-10-14 02:27:39 -04:00
Revert "Update lua plugin to 5.2.3"
FILE typedef to *void needs more work to not break sim and application builds. I checked only a few random native builds unfortunately. Sorry for inconvenience.
This commit is contained in:
Marcin Bukat
parent
36378988ad
commit
bfd0179042
64 changed files with 5733 additions and 9088 deletions
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
** $Id: lcode.c,v 2.62.1.1 2013/04/12 18:48:47 roberto Exp $
|
||||
** $Id: lcode.c,v 2.25.1.3 2007/12/28 15:32:23 roberto Exp $
|
||||
** Code generator for Lua
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
|
@ -21,9 +21,7 @@
|
|||
#include "lobject.h"
|
||||
#include "lopcodes.h"
|
||||
#include "lparser.h"
|
||||
#include "lstring.h"
|
||||
#include "ltable.h"
|
||||
#include "lvm.h"
|
||||
|
||||
|
||||
#define hasjumps(e) ((e)->t != (e)->f)
|
||||
|
|
@ -36,23 +34,25 @@ static int isnumeral(expdesc *e) {
|
|||
|
||||
void luaK_nil (FuncState *fs, int from, int n) {
|
||||
Instruction *previous;
|
||||
int l = from + n - 1; /* last register to set nil */
|
||||
if (fs->pc > fs->lasttarget) { /* no jumps to current position? */
|
||||
previous = &fs->f->code[fs->pc-1];
|
||||
if (GET_OPCODE(*previous) == OP_LOADNIL) {
|
||||
int pfrom = GETARG_A(*previous);
|
||||
int pl = pfrom + GETARG_B(*previous);
|
||||
if ((pfrom <= from && from <= pl + 1) ||
|
||||
(from <= pfrom && pfrom <= l + 1)) { /* can connect both? */
|
||||
if (pfrom < from) from = pfrom; /* from = min(from, pfrom) */
|
||||
if (pl > l) l = pl; /* l = max(l, pl) */
|
||||
SETARG_A(*previous, from);
|
||||
SETARG_B(*previous, l - from);
|
||||
return;
|
||||
if (fs->pc == 0) { /* function start? */
|
||||
if (from >= fs->nactvar)
|
||||
return; /* positions are already clean */
|
||||
}
|
||||
else {
|
||||
previous = &fs->f->code[fs->pc-1];
|
||||
if (GET_OPCODE(*previous) == OP_LOADNIL) {
|
||||
int pfrom = GETARG_A(*previous);
|
||||
int pto = GETARG_B(*previous);
|
||||
if (pfrom <= from && from <= pto+1) { /* can connect both? */
|
||||
if (from+n-1 > pto)
|
||||
SETARG_B(*previous, from+n-1);
|
||||
return;
|
||||
}
|
||||
}
|
||||
} /* else go through */
|
||||
}
|
||||
}
|
||||
luaK_codeABC(fs, OP_LOADNIL, from, n - 1, 0); /* else no optimization */
|
||||
luaK_codeABC(fs, OP_LOADNIL, from, from+n-1, 0); /* else no optimization */
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -176,19 +176,6 @@ void luaK_patchlist (FuncState *fs, int list, int target) {
|
|||
}
|
||||
|
||||
|
||||
LUAI_FUNC void luaK_patchclose (FuncState *fs, int list, int level) {
|
||||
level++; /* argument is +1 to reserve 0 as non-op */
|
||||
while (list != NO_JUMP) {
|
||||
int next = getjump(fs, list);
|
||||
lua_assert(GET_OPCODE(fs->f->code[list]) == OP_JMP &&
|
||||
(GETARG_A(fs->f->code[list]) == 0 ||
|
||||
GETARG_A(fs->f->code[list]) >= level));
|
||||
SETARG_A(fs->f->code[list], level);
|
||||
list = next;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaK_patchtohere (FuncState *fs, int list) {
|
||||
luaK_getlabel(fs);
|
||||
luaK_concat(fs, &fs->jpc, list);
|
||||
|
|
@ -209,55 +196,6 @@ void luaK_concat (FuncState *fs, int *l1, int l2) {
|
|||
}
|
||||
|
||||
|
||||
static int luaK_code (FuncState *fs, Instruction i) {
|
||||
Proto *f = fs->f;
|
||||
dischargejpc(fs); /* `pc' will change */
|
||||
/* put new instruction in code array */
|
||||
luaM_growvector(fs->ls->L, f->code, fs->pc, f->sizecode, Instruction,
|
||||
MAX_INT, "opcodes");
|
||||
f->code[fs->pc] = i;
|
||||
/* save corresponding line information */
|
||||
luaM_growvector(fs->ls->L, f->lineinfo, fs->pc, f->sizelineinfo, int,
|
||||
MAX_INT, "opcodes");
|
||||
f->lineinfo[fs->pc] = fs->ls->lastline;
|
||||
return fs->pc++;
|
||||
}
|
||||
|
||||
|
||||
int luaK_codeABC (FuncState *fs, OpCode o, int a, int b, int c) {
|
||||
lua_assert(getOpMode(o) == iABC);
|
||||
lua_assert(getBMode(o) != OpArgN || b == 0);
|
||||
lua_assert(getCMode(o) != OpArgN || c == 0);
|
||||
lua_assert(a <= MAXARG_A && b <= MAXARG_B && c <= MAXARG_C);
|
||||
return luaK_code(fs, CREATE_ABC(o, a, b, c));
|
||||
}
|
||||
|
||||
|
||||
int luaK_codeABx (FuncState *fs, OpCode o, int a, unsigned int bc) {
|
||||
lua_assert(getOpMode(o) == iABx || getOpMode(o) == iAsBx);
|
||||
lua_assert(getCMode(o) == OpArgN);
|
||||
lua_assert(a <= MAXARG_A && bc <= MAXARG_Bx);
|
||||
return luaK_code(fs, CREATE_ABx(o, a, bc));
|
||||
}
|
||||
|
||||
|
||||
static int codeextraarg (FuncState *fs, int a) {
|
||||
lua_assert(a <= MAXARG_Ax);
|
||||
return luaK_code(fs, CREATE_Ax(OP_EXTRAARG, a));
|
||||
}
|
||||
|
||||
|
||||
int luaK_codek (FuncState *fs, int reg, int k) {
|
||||
if (k <= MAXARG_Bx)
|
||||
return luaK_codeABx(fs, OP_LOADK, reg, k);
|
||||
else {
|
||||
int p = luaK_codeABx(fs, OP_LOADKX, reg, 0);
|
||||
codeextraarg(fs, k);
|
||||
return p;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaK_checkstack (FuncState *fs, int n) {
|
||||
int newstack = fs->freereg + n;
|
||||
if (newstack > fs->f->maxstacksize) {
|
||||
|
|
@ -284,59 +222,42 @@ static void freereg (FuncState *fs, int reg) {
|
|||
|
||||
static void freeexp (FuncState *fs, expdesc *e) {
|
||||
if (e->k == VNONRELOC)
|
||||
freereg(fs, e->u.info);
|
||||
freereg(fs, e->u.s.info);
|
||||
}
|
||||
|
||||
|
||||
static int addk (FuncState *fs, TValue *key, TValue *v) {
|
||||
lua_State *L = fs->ls->L;
|
||||
TValue *idx = luaH_set(L, fs->h, key);
|
||||
static int addk (FuncState *fs, TValue *k, TValue *v) {
|
||||
lua_State *L = fs->L;
|
||||
TValue *idx = luaH_set(L, fs->h, k);
|
||||
Proto *f = fs->f;
|
||||
int k, oldsize;
|
||||
int oldsize = f->sizek;
|
||||
if (ttisnumber(idx)) {
|
||||
lua_Number n = nvalue(idx);
|
||||
lua_number2int(k, n);
|
||||
if (luaV_rawequalobj(&f->k[k], v))
|
||||
return k;
|
||||
/* else may be a collision (e.g., between 0.0 and "\0\0\0\0\0\0\0\0");
|
||||
go through and create a new entry for this value */
|
||||
lua_assert(luaO_rawequalObj(&fs->f->k[cast_int(nvalue(idx))], v));
|
||||
return cast_int(nvalue(idx));
|
||||
}
|
||||
else { /* constant not found; create a new entry */
|
||||
setnvalue(idx, cast_num(fs->nk));
|
||||
luaM_growvector(L, f->k, fs->nk, f->sizek, TValue,
|
||||
MAXARG_Bx, "constant table overflow");
|
||||
while (oldsize < f->sizek) setnilvalue(&f->k[oldsize++]);
|
||||
setobj(L, &f->k[fs->nk], v);
|
||||
luaC_barrier(L, f, v);
|
||||
return fs->nk++;
|
||||
}
|
||||
/* constant not found; create a new entry */
|
||||
oldsize = f->sizek;
|
||||
k = fs->nk;
|
||||
/* numerical value does not need GC barrier;
|
||||
table has no metatable, so it does not need to invalidate cache */
|
||||
setnvalue(idx, cast_num(k));
|
||||
luaM_growvector(L, f->k, k, f->sizek, TValue, MAXARG_Ax, "constants");
|
||||
while (oldsize < f->sizek) setnilvalue(&f->k[oldsize++]);
|
||||
setobj(L, &f->k[k], v);
|
||||
fs->nk++;
|
||||
luaC_barrier(L, f, v);
|
||||
return k;
|
||||
}
|
||||
|
||||
|
||||
int luaK_stringK (FuncState *fs, TString *s) {
|
||||
TValue o;
|
||||
setsvalue(fs->ls->L, &o, s);
|
||||
setsvalue(fs->L, &o, s);
|
||||
return addk(fs, &o, &o);
|
||||
}
|
||||
|
||||
|
||||
int luaK_numberK (FuncState *fs, lua_Number r) {
|
||||
int n;
|
||||
lua_State *L = fs->ls->L;
|
||||
TValue o;
|
||||
setnvalue(&o, r);
|
||||
if (r == 0 || luai_numisnan(NULL, r)) { /* handle -0 and NaN */
|
||||
/* use raw representation as key to avoid numeric problems */
|
||||
setsvalue(L, L->top++, luaS_newlstr(L, (char *)&r, sizeof(r)));
|
||||
n = addk(fs, L->top - 1, &o);
|
||||
L->top--;
|
||||
}
|
||||
else
|
||||
n = addk(fs, &o, &o); /* regular case */
|
||||
return n;
|
||||
return addk(fs, &o, &o);
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -351,7 +272,7 @@ static int nilK (FuncState *fs) {
|
|||
TValue k, v;
|
||||
setnilvalue(&v);
|
||||
/* cannot use nil as key; instead use table itself to represent nil */
|
||||
sethvalue(fs->ls->L, &k, fs->h);
|
||||
sethvalue(fs->L, &k, fs->h);
|
||||
return addk(fs, &k, &v);
|
||||
}
|
||||
|
||||
|
|
@ -371,7 +292,7 @@ void luaK_setreturns (FuncState *fs, expdesc *e, int nresults) {
|
|||
void luaK_setoneret (FuncState *fs, expdesc *e) {
|
||||
if (e->k == VCALL) { /* expression is an open function call? */
|
||||
e->k = VNONRELOC;
|
||||
e->u.info = GETARG_A(getcode(fs, e));
|
||||
e->u.s.info = GETARG_A(getcode(fs, e));
|
||||
}
|
||||
else if (e->k == VVARARG) {
|
||||
SETARG_B(getcode(fs, e), 2);
|
||||
|
|
@ -387,18 +308,19 @@ void luaK_dischargevars (FuncState *fs, expdesc *e) {
|
|||
break;
|
||||
}
|
||||
case VUPVAL: {
|
||||
e->u.info = luaK_codeABC(fs, OP_GETUPVAL, 0, e->u.info, 0);
|
||||
e->u.s.info = luaK_codeABC(fs, OP_GETUPVAL, 0, e->u.s.info, 0);
|
||||
e->k = VRELOCABLE;
|
||||
break;
|
||||
}
|
||||
case VGLOBAL: {
|
||||
e->u.s.info = luaK_codeABx(fs, OP_GETGLOBAL, 0, e->u.s.info);
|
||||
e->k = VRELOCABLE;
|
||||
break;
|
||||
}
|
||||
case VINDEXED: {
|
||||
OpCode op = OP_GETTABUP; /* assume 't' is in an upvalue */
|
||||
freereg(fs, e->u.ind.idx);
|
||||
if (e->u.ind.vt == VLOCAL) { /* 't' is in a register? */
|
||||
freereg(fs, e->u.ind.t);
|
||||
op = OP_GETTABLE;
|
||||
}
|
||||
e->u.info = luaK_codeABC(fs, op, 0, e->u.ind.t, e->u.ind.idx);
|
||||
freereg(fs, e->u.s.aux);
|
||||
freereg(fs, e->u.s.info);
|
||||
e->u.s.info = luaK_codeABC(fs, OP_GETTABLE, 0, e->u.s.info, e->u.s.aux);
|
||||
e->k = VRELOCABLE;
|
||||
break;
|
||||
}
|
||||
|
|
@ -425,16 +347,16 @@ static void discharge2reg (FuncState *fs, expdesc *e, int reg) {
|
|||
luaK_nil(fs, reg, 1);
|
||||
break;
|
||||
}
|
||||
case VFALSE: case VTRUE: {
|
||||
case VFALSE: case VTRUE: {
|
||||
luaK_codeABC(fs, OP_LOADBOOL, reg, e->k == VTRUE, 0);
|
||||
break;
|
||||
}
|
||||
case VK: {
|
||||
luaK_codek(fs, reg, e->u.info);
|
||||
luaK_codeABx(fs, OP_LOADK, reg, e->u.s.info);
|
||||
break;
|
||||
}
|
||||
case VKNUM: {
|
||||
luaK_codek(fs, reg, luaK_numberK(fs, e->u.nval));
|
||||
luaK_codeABx(fs, OP_LOADK, reg, luaK_numberK(fs, e->u.nval));
|
||||
break;
|
||||
}
|
||||
case VRELOCABLE: {
|
||||
|
|
@ -443,8 +365,8 @@ static void discharge2reg (FuncState *fs, expdesc *e, int reg) {
|
|||
break;
|
||||
}
|
||||
case VNONRELOC: {
|
||||
if (reg != e->u.info)
|
||||
luaK_codeABC(fs, OP_MOVE, reg, e->u.info, 0);
|
||||
if (reg != e->u.s.info)
|
||||
luaK_codeABC(fs, OP_MOVE, reg, e->u.s.info, 0);
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
|
|
@ -452,7 +374,7 @@ static void discharge2reg (FuncState *fs, expdesc *e, int reg) {
|
|||
return; /* nothing to do... */
|
||||
}
|
||||
}
|
||||
e->u.info = reg;
|
||||
e->u.s.info = reg;
|
||||
e->k = VNONRELOC;
|
||||
}
|
||||
|
||||
|
|
@ -468,7 +390,7 @@ static void discharge2anyreg (FuncState *fs, expdesc *e) {
|
|||
static void exp2reg (FuncState *fs, expdesc *e, int reg) {
|
||||
discharge2reg(fs, e, reg);
|
||||
if (e->k == VJMP)
|
||||
luaK_concat(fs, &e->t, e->u.info); /* put this jump in `t' list */
|
||||
luaK_concat(fs, &e->t, e->u.s.info); /* put this jump in `t' list */
|
||||
if (hasjumps(e)) {
|
||||
int final; /* position after whole expression */
|
||||
int p_f = NO_JUMP; /* position of an eventual LOAD false */
|
||||
|
|
@ -484,7 +406,7 @@ static void exp2reg (FuncState *fs, expdesc *e, int reg) {
|
|||
patchlistaux(fs, e->t, final, reg, p_t);
|
||||
}
|
||||
e->f = e->t = NO_JUMP;
|
||||
e->u.info = reg;
|
||||
e->u.s.info = reg;
|
||||
e->k = VNONRELOC;
|
||||
}
|
||||
|
||||
|
|
@ -500,20 +422,14 @@ void luaK_exp2nextreg (FuncState *fs, expdesc *e) {
|
|||
int luaK_exp2anyreg (FuncState *fs, expdesc *e) {
|
||||
luaK_dischargevars(fs, e);
|
||||
if (e->k == VNONRELOC) {
|
||||
if (!hasjumps(e)) return e->u.info; /* exp is already in a register */
|
||||
if (e->u.info >= fs->nactvar) { /* reg. is not a local? */
|
||||
exp2reg(fs, e, e->u.info); /* put value on it */
|
||||
return e->u.info;
|
||||
if (!hasjumps(e)) return e->u.s.info; /* exp is already in a register */
|
||||
if (e->u.s.info >= fs->nactvar) { /* reg. is not a local? */
|
||||
exp2reg(fs, e, e->u.s.info); /* put value on it */
|
||||
return e->u.s.info;
|
||||
}
|
||||
}
|
||||
luaK_exp2nextreg(fs, e); /* default */
|
||||
return e->u.info;
|
||||
}
|
||||
|
||||
|
||||
void luaK_exp2anyregup (FuncState *fs, expdesc *e) {
|
||||
if (e->k != VUPVAL || hasjumps(e))
|
||||
luaK_exp2anyreg(fs, e);
|
||||
return e->u.s.info;
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -528,24 +444,22 @@ void luaK_exp2val (FuncState *fs, expdesc *e) {
|
|||
int luaK_exp2RK (FuncState *fs, expdesc *e) {
|
||||
luaK_exp2val(fs, e);
|
||||
switch (e->k) {
|
||||
case VKNUM:
|
||||
case VTRUE:
|
||||
case VFALSE:
|
||||
case VNIL: {
|
||||
if (fs->nk <= MAXINDEXRK) { /* constant fits in RK operand? */
|
||||
e->u.info = (e->k == VNIL) ? nilK(fs) : boolK(fs, (e->k == VTRUE));
|
||||
if (fs->nk <= MAXINDEXRK) { /* constant fit in RK operand? */
|
||||
e->u.s.info = (e->k == VNIL) ? nilK(fs) :
|
||||
(e->k == VKNUM) ? luaK_numberK(fs, e->u.nval) :
|
||||
boolK(fs, (e->k == VTRUE));
|
||||
e->k = VK;
|
||||
return RKASK(e->u.info);
|
||||
return RKASK(e->u.s.info);
|
||||
}
|
||||
else break;
|
||||
}
|
||||
case VKNUM: {
|
||||
e->u.info = luaK_numberK(fs, e->u.nval);
|
||||
e->k = VK;
|
||||
/* go through */
|
||||
}
|
||||
case VK: {
|
||||
if (e->u.info <= MAXINDEXRK) /* constant fits in argC? */
|
||||
return RKASK(e->u.info);
|
||||
if (e->u.s.info <= MAXINDEXRK) /* constant fit in argC? */
|
||||
return RKASK(e->u.s.info);
|
||||
else break;
|
||||
}
|
||||
default: break;
|
||||
|
|
@ -559,18 +473,22 @@ void luaK_storevar (FuncState *fs, expdesc *var, expdesc *ex) {
|
|||
switch (var->k) {
|
||||
case VLOCAL: {
|
||||
freeexp(fs, ex);
|
||||
exp2reg(fs, ex, var->u.info);
|
||||
exp2reg(fs, ex, var->u.s.info);
|
||||
return;
|
||||
}
|
||||
case VUPVAL: {
|
||||
int e = luaK_exp2anyreg(fs, ex);
|
||||
luaK_codeABC(fs, OP_SETUPVAL, e, var->u.info, 0);
|
||||
luaK_codeABC(fs, OP_SETUPVAL, e, var->u.s.info, 0);
|
||||
break;
|
||||
}
|
||||
case VGLOBAL: {
|
||||
int e = luaK_exp2anyreg(fs, ex);
|
||||
luaK_codeABx(fs, OP_SETGLOBAL, e, var->u.s.info);
|
||||
break;
|
||||
}
|
||||
case VINDEXED: {
|
||||
OpCode op = (var->u.ind.vt == VLOCAL) ? OP_SETTABLE : OP_SETTABUP;
|
||||
int e = luaK_exp2RK(fs, ex);
|
||||
luaK_codeABC(fs, op, var->u.ind.t, var->u.ind.idx, e);
|
||||
luaK_codeABC(fs, OP_SETTABLE, var->u.s.info, var->u.s.aux, e);
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
|
|
@ -583,20 +501,20 @@ void luaK_storevar (FuncState *fs, expdesc *var, expdesc *ex) {
|
|||
|
||||
|
||||
void luaK_self (FuncState *fs, expdesc *e, expdesc *key) {
|
||||
int ereg;
|
||||
int func;
|
||||
luaK_exp2anyreg(fs, e);
|
||||
ereg = e->u.info; /* register where 'e' was placed */
|
||||
freeexp(fs, e);
|
||||
e->u.info = fs->freereg; /* base register for op_self */
|
||||
e->k = VNONRELOC;
|
||||
luaK_reserveregs(fs, 2); /* function and 'self' produced by op_self */
|
||||
luaK_codeABC(fs, OP_SELF, e->u.info, ereg, luaK_exp2RK(fs, key));
|
||||
func = fs->freereg;
|
||||
luaK_reserveregs(fs, 2);
|
||||
luaK_codeABC(fs, OP_SELF, func, e->u.s.info, luaK_exp2RK(fs, key));
|
||||
freeexp(fs, key);
|
||||
e->u.s.info = func;
|
||||
e->k = VNONRELOC;
|
||||
}
|
||||
|
||||
|
||||
static void invertjump (FuncState *fs, expdesc *e) {
|
||||
Instruction *pc = getjumpcontrol(fs, e->u.info);
|
||||
Instruction *pc = getjumpcontrol(fs, e->u.s.info);
|
||||
lua_assert(testTMode(GET_OPCODE(*pc)) && GET_OPCODE(*pc) != OP_TESTSET &&
|
||||
GET_OPCODE(*pc) != OP_TEST);
|
||||
SETARG_A(*pc, !(GETARG_A(*pc)));
|
||||
|
|
@ -614,7 +532,7 @@ static int jumponcond (FuncState *fs, expdesc *e, int cond) {
|
|||
}
|
||||
discharge2anyreg(fs, e);
|
||||
freeexp(fs, e);
|
||||
return condjump(fs, OP_TESTSET, NO_REG, e->u.info, cond);
|
||||
return condjump(fs, OP_TESTSET, NO_REG, e->u.s.info, cond);
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -622,15 +540,19 @@ void luaK_goiftrue (FuncState *fs, expdesc *e) {
|
|||
int pc; /* pc of last jump */
|
||||
luaK_dischargevars(fs, e);
|
||||
switch (e->k) {
|
||||
case VJMP: {
|
||||
invertjump(fs, e);
|
||||
pc = e->u.info;
|
||||
break;
|
||||
}
|
||||
case VK: case VKNUM: case VTRUE: {
|
||||
pc = NO_JUMP; /* always true; do nothing */
|
||||
break;
|
||||
}
|
||||
case VFALSE: {
|
||||
pc = luaK_jump(fs); /* always jump */
|
||||
break;
|
||||
}
|
||||
case VJMP: {
|
||||
invertjump(fs, e);
|
||||
pc = e->u.s.info;
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
pc = jumponcond(fs, e, 0);
|
||||
break;
|
||||
|
|
@ -642,18 +564,22 @@ void luaK_goiftrue (FuncState *fs, expdesc *e) {
|
|||
}
|
||||
|
||||
|
||||
void luaK_goiffalse (FuncState *fs, expdesc *e) {
|
||||
static void luaK_goiffalse (FuncState *fs, expdesc *e) {
|
||||
int pc; /* pc of last jump */
|
||||
luaK_dischargevars(fs, e);
|
||||
switch (e->k) {
|
||||
case VJMP: {
|
||||
pc = e->u.info;
|
||||
break;
|
||||
}
|
||||
case VNIL: case VFALSE: {
|
||||
pc = NO_JUMP; /* always false; do nothing */
|
||||
break;
|
||||
}
|
||||
case VTRUE: {
|
||||
pc = luaK_jump(fs); /* always jump */
|
||||
break;
|
||||
}
|
||||
case VJMP: {
|
||||
pc = e->u.s.info;
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
pc = jumponcond(fs, e, 1);
|
||||
break;
|
||||
|
|
@ -684,7 +610,7 @@ static void codenot (FuncState *fs, expdesc *e) {
|
|||
case VNONRELOC: {
|
||||
discharge2anyreg(fs, e);
|
||||
freeexp(fs, e);
|
||||
e->u.info = luaK_codeABC(fs, OP_NOT, 0, e->u.info, 0);
|
||||
e->u.s.info = luaK_codeABC(fs, OP_NOT, 0, e->u.s.info, 0);
|
||||
e->k = VRELOCABLE;
|
||||
break;
|
||||
}
|
||||
|
|
@ -701,28 +627,38 @@ static void codenot (FuncState *fs, expdesc *e) {
|
|||
|
||||
|
||||
void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k) {
|
||||
lua_assert(!hasjumps(t));
|
||||
t->u.ind.t = t->u.info;
|
||||
t->u.ind.idx = luaK_exp2RK(fs, k);
|
||||
t->u.ind.vt = (t->k == VUPVAL) ? VUPVAL
|
||||
: check_exp(vkisinreg(t->k), VLOCAL);
|
||||
t->u.s.aux = luaK_exp2RK(fs, k);
|
||||
t->k = VINDEXED;
|
||||
}
|
||||
|
||||
|
||||
static int constfolding (OpCode op, expdesc *e1, expdesc *e2) {
|
||||
lua_Number r;
|
||||
lua_Number v1, v2, r;
|
||||
if (!isnumeral(e1) || !isnumeral(e2)) return 0;
|
||||
if ((op == OP_DIV || op == OP_MOD) && e2->u.nval == 0)
|
||||
return 0; /* do not attempt to divide by 0 */
|
||||
r = luaO_arith(op - OP_ADD + LUA_OPADD, e1->u.nval, e2->u.nval);
|
||||
v1 = e1->u.nval;
|
||||
v2 = e2->u.nval;
|
||||
switch (op) {
|
||||
case OP_ADD: r = luai_numadd(v1, v2); break;
|
||||
case OP_SUB: r = luai_numsub(v1, v2); break;
|
||||
case OP_MUL: r = luai_nummul(v1, v2); break;
|
||||
case OP_DIV:
|
||||
if (v2 == 0) return 0; /* do not attempt to divide by 0 */
|
||||
r = luai_numdiv(v1, v2); break;
|
||||
case OP_MOD:
|
||||
if (v2 == 0) return 0; /* do not attempt to divide by 0 */
|
||||
r = luai_nummod(v1, v2); break;
|
||||
case OP_POW: r = luai_numpow(v1, v2); break;
|
||||
case OP_UNM: r = luai_numunm(v1); break;
|
||||
case OP_LEN: return 0; /* no constant folding for 'len' */
|
||||
default: lua_assert(0); r = 0; break;
|
||||
}
|
||||
if (luai_numisnan(r)) return 0; /* do not attempt to produce NaN */
|
||||
e1->u.nval = r;
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static void codearith (FuncState *fs, OpCode op,
|
||||
expdesc *e1, expdesc *e2, int line) {
|
||||
static void codearith (FuncState *fs, OpCode op, expdesc *e1, expdesc *e2) {
|
||||
if (constfolding(op, e1, e2))
|
||||
return;
|
||||
else {
|
||||
|
|
@ -736,9 +672,8 @@ static void codearith (FuncState *fs, OpCode op,
|
|||
freeexp(fs, e2);
|
||||
freeexp(fs, e1);
|
||||
}
|
||||
e1->u.info = luaK_codeABC(fs, op, 0, o1, o2);
|
||||
e1->u.s.info = luaK_codeABC(fs, op, 0, o1, o2);
|
||||
e1->k = VRELOCABLE;
|
||||
luaK_fixline(fs, line);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -754,28 +689,25 @@ static void codecomp (FuncState *fs, OpCode op, int cond, expdesc *e1,
|
|||
temp = o1; o1 = o2; o2 = temp; /* o1 <==> o2 */
|
||||
cond = 1;
|
||||
}
|
||||
e1->u.info = condjump(fs, op, cond, o1, o2);
|
||||
e1->u.s.info = condjump(fs, op, cond, o1, o2);
|
||||
e1->k = VJMP;
|
||||
}
|
||||
|
||||
|
||||
void luaK_prefix (FuncState *fs, UnOpr op, expdesc *e, int line) {
|
||||
void luaK_prefix (FuncState *fs, UnOpr op, expdesc *e) {
|
||||
expdesc e2;
|
||||
e2.t = e2.f = NO_JUMP; e2.k = VKNUM; e2.u.nval = 0;
|
||||
switch (op) {
|
||||
case OPR_MINUS: {
|
||||
if (isnumeral(e)) /* minus constant? */
|
||||
e->u.nval = luai_numunm(NULL, e->u.nval); /* fold it */
|
||||
else {
|
||||
luaK_exp2anyreg(fs, e);
|
||||
codearith(fs, OP_UNM, e, &e2, line);
|
||||
}
|
||||
if (!isnumeral(e))
|
||||
luaK_exp2anyreg(fs, e); /* cannot operate on non-numeric constants */
|
||||
codearith(fs, OP_UNM, e, &e2);
|
||||
break;
|
||||
}
|
||||
case OPR_NOT: codenot(fs, e); break;
|
||||
case OPR_LEN: {
|
||||
luaK_exp2anyreg(fs, e); /* cannot operate on constants */
|
||||
codearith(fs, OP_LEN, e, &e2, line);
|
||||
codearith(fs, OP_LEN, e, &e2);
|
||||
break;
|
||||
}
|
||||
default: lua_assert(0);
|
||||
|
|
@ -810,8 +742,7 @@ void luaK_infix (FuncState *fs, BinOpr op, expdesc *v) {
|
|||
}
|
||||
|
||||
|
||||
void luaK_posfix (FuncState *fs, BinOpr op,
|
||||
expdesc *e1, expdesc *e2, int line) {
|
||||
void luaK_posfix (FuncState *fs, BinOpr op, expdesc *e1, expdesc *e2) {
|
||||
switch (op) {
|
||||
case OPR_AND: {
|
||||
lua_assert(e1->t == NO_JUMP); /* list must be closed */
|
||||
|
|
@ -830,30 +761,29 @@ void luaK_posfix (FuncState *fs, BinOpr op,
|
|||
case OPR_CONCAT: {
|
||||
luaK_exp2val(fs, e2);
|
||||
if (e2->k == VRELOCABLE && GET_OPCODE(getcode(fs, e2)) == OP_CONCAT) {
|
||||
lua_assert(e1->u.info == GETARG_B(getcode(fs, e2))-1);
|
||||
lua_assert(e1->u.s.info == GETARG_B(getcode(fs, e2))-1);
|
||||
freeexp(fs, e1);
|
||||
SETARG_B(getcode(fs, e2), e1->u.info);
|
||||
e1->k = VRELOCABLE; e1->u.info = e2->u.info;
|
||||
SETARG_B(getcode(fs, e2), e1->u.s.info);
|
||||
e1->k = VRELOCABLE; e1->u.s.info = e2->u.s.info;
|
||||
}
|
||||
else {
|
||||
luaK_exp2nextreg(fs, e2); /* operand must be on the 'stack' */
|
||||
codearith(fs, OP_CONCAT, e1, e2, line);
|
||||
codearith(fs, OP_CONCAT, e1, e2);
|
||||
}
|
||||
break;
|
||||
}
|
||||
case OPR_ADD: case OPR_SUB: case OPR_MUL: case OPR_DIV:
|
||||
case OPR_MOD: case OPR_POW: {
|
||||
codearith(fs, cast(OpCode, op - OPR_ADD + OP_ADD), e1, e2, line);
|
||||
break;
|
||||
}
|
||||
case OPR_EQ: case OPR_LT: case OPR_LE: {
|
||||
codecomp(fs, cast(OpCode, op - OPR_EQ + OP_EQ), 1, e1, e2);
|
||||
break;
|
||||
}
|
||||
case OPR_NE: case OPR_GT: case OPR_GE: {
|
||||
codecomp(fs, cast(OpCode, op - OPR_NE + OP_EQ), 0, e1, e2);
|
||||
break;
|
||||
}
|
||||
case OPR_ADD: codearith(fs, OP_ADD, e1, e2); break;
|
||||
case OPR_SUB: codearith(fs, OP_SUB, e1, e2); break;
|
||||
case OPR_MUL: codearith(fs, OP_MUL, e1, e2); break;
|
||||
case OPR_DIV: codearith(fs, OP_DIV, e1, e2); break;
|
||||
case OPR_MOD: codearith(fs, OP_MOD, e1, e2); break;
|
||||
case OPR_POW: codearith(fs, OP_POW, e1, e2); break;
|
||||
case OPR_EQ: codecomp(fs, OP_EQ, 1, e1, e2); break;
|
||||
case OPR_NE: codecomp(fs, OP_EQ, 0, e1, e2); break;
|
||||
case OPR_LT: codecomp(fs, OP_LT, 1, e1, e2); break;
|
||||
case OPR_LE: codecomp(fs, OP_LE, 1, e1, e2); break;
|
||||
case OPR_GT: codecomp(fs, OP_LT, 0, e1, e2); break;
|
||||
case OPR_GE: codecomp(fs, OP_LE, 0, e1, e2); break;
|
||||
default: lua_assert(0);
|
||||
}
|
||||
}
|
||||
|
|
@ -864,18 +794,46 @@ void luaK_fixline (FuncState *fs, int line) {
|
|||
}
|
||||
|
||||
|
||||
static int luaK_code (FuncState *fs, Instruction i, int line) {
|
||||
Proto *f = fs->f;
|
||||
dischargejpc(fs); /* `pc' will change */
|
||||
/* put new instruction in code array */
|
||||
luaM_growvector(fs->L, f->code, fs->pc, f->sizecode, Instruction,
|
||||
MAX_INT, "code size overflow");
|
||||
f->code[fs->pc] = i;
|
||||
/* save corresponding line information */
|
||||
luaM_growvector(fs->L, f->lineinfo, fs->pc, f->sizelineinfo, int,
|
||||
MAX_INT, "code size overflow");
|
||||
f->lineinfo[fs->pc] = line;
|
||||
return fs->pc++;
|
||||
}
|
||||
|
||||
|
||||
int luaK_codeABC (FuncState *fs, OpCode o, int a, int b, int c) {
|
||||
lua_assert(getOpMode(o) == iABC);
|
||||
lua_assert(getBMode(o) != OpArgN || b == 0);
|
||||
lua_assert(getCMode(o) != OpArgN || c == 0);
|
||||
return luaK_code(fs, CREATE_ABC(o, a, b, c), fs->ls->lastline);
|
||||
}
|
||||
|
||||
|
||||
int luaK_codeABx (FuncState *fs, OpCode o, int a, unsigned int bc) {
|
||||
lua_assert(getOpMode(o) == iABx || getOpMode(o) == iAsBx);
|
||||
lua_assert(getCMode(o) == OpArgN);
|
||||
return luaK_code(fs, CREATE_ABx(o, a, bc), fs->ls->lastline);
|
||||
}
|
||||
|
||||
|
||||
void luaK_setlist (FuncState *fs, int base, int nelems, int tostore) {
|
||||
int c = (nelems - 1)/LFIELDS_PER_FLUSH + 1;
|
||||
int b = (tostore == LUA_MULTRET) ? 0 : tostore;
|
||||
lua_assert(tostore != 0);
|
||||
if (c <= MAXARG_C)
|
||||
luaK_codeABC(fs, OP_SETLIST, base, b, c);
|
||||
else if (c <= MAXARG_Ax) {
|
||||
else {
|
||||
luaK_codeABC(fs, OP_SETLIST, base, b, 0);
|
||||
codeextraarg(fs, c);
|
||||
luaK_code(fs, cast(Instruction, c), fs->ls->lastline);
|
||||
}
|
||||
else
|
||||
luaX_syntaxerror(fs->ls, "constructor too long");
|
||||
fs->freereg = base + 1; /* free registers with list values */
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue