static const char* kname(Proto* p, int c)
{
if (ISK(c) && ttisstring(&p->k[INDEXK(c)]))
return svalue(&p->k[INDEXK(c)]);
else
return "?";
}
static int do_getinstruction(lua_State *L) /** getinstruction(f,i) */
{
const Proto* f=Pget(L,1);
int pc=luaL_checkinteger(L,2);
if (pc<=0 || pc>f->sizecode || f->code==NULL) return 0;
pc--;
{
const Instruction* code=f->code;
Instruction i=code[pc];
OpCode o=GET_OPCODE(i);
int a=GETARG_A(i);
int b=GETARG_B(i);
int c=GETARG_C(i);
int ax=GETARG_Ax(i);
int bx=GETARG_Bx(i);
int sbx=GETARG_sBx(i);
int line=getfuncline(f,pc);
if (line>0) lua_pushinteger(L,line); else lua_pushnil(L);
lua_pushstring(L,luaP_opnames[o]);
switch (getOpMode(o))
{
case iABC:
lua_pushinteger(L,a);
if (getBMode(o)!=OpArgN) lua_pushinteger(L,ISK(b) ? (MYK(INDEXK(b))) : b);
else lua_pushnil(L);
if (getCMode(o)!=OpArgN) lua_pushinteger(L,ISK(c) ? (MYK(INDEXK(c))) : c);
else lua_pushnil(L);
break;
case iABx:
lua_pushinteger(L,a);
if (getBMode(o)==OpArgK) lua_pushinteger(L,MYK(bx)); else lua_pushinteger(L,bx);
lua_pushnil(L);
break;
case iAsBx:
lua_pushinteger(L,a);
lua_pushinteger(L,sbx);
lua_pushnil(L);
break;
case iAx:
lua_pushinteger(L,MYK(ax));
lua_pushnil(L);
lua_pushnil(L);
break;
}
switch (o)
{
case OP_JMP:
case OP_FORLOOP:
case OP_FORPREP:
case OP_TFORLOOP:
lua_pop(L,1);
lua_pushinteger(L,sbx+pc+2);
break;
default:
break;
}
}
return 5;
}
/* local op, a, b, c, test = jit.util.bytecode(func, pc) */
static int ju_bytecode(lua_State *L)
{
Proto *pt = check_LCL(L)->l.p;
int pc = luaL_checkint(L, 2);
if (pc >= 1 && pc <= pt->sizecode) {
Instruction ins = pt->code[pc-1];
OpCode op = GET_OPCODE(ins);
if (pc > 1 && (((int)OP_SETLIST) << POS_OP) ==
(pt->code[pc-2] & (MASK1(SIZE_OP,POS_OP) | MASK1(SIZE_C,POS_C)))) {
lua_pushstring(L, luaP_opnames[OP_SETLIST]);
lua_pushnumber(L, (lua_Number)ins); /* Fake extended op. */
return 1;
}
if (op >= NUM_OPCODES) return 0; /* Just in case. */
lua_pushstring(L, luaP_opnames[op]);
lua_pushinteger(L, GETARG_A(ins));
switch (getOpMode(op)) {
case iABC: {
int b = GETARG_B(ins), c = GETARG_C(ins);
switch (getBMode(op)) {
case OpArgN:
lua_pushnil(L);
break;
case OpArgK:
if (ISK(b)) b = -1-INDEXK(b);
case OpArgR:
case OpArgU:
lua_pushinteger(L, b);
break;
}
switch (getCMode(op)) {
case OpArgN:
lua_pushnil(L);
break;
case OpArgK:
if (ISK(c)) c = -1-INDEXK(c);
case OpArgR:
case OpArgU:
lua_pushinteger(L, c);
break;
}
lua_pushboolean(L, testTMode(op));
return 5;
}
case iABx: {
int bx = GETARG_Bx(ins);
lua_pushinteger(L, getBMode(op) == OpArgK ? -1-bx : bx);
return 3;
}
case iAsBx:
lua_pushinteger(L, GETARG_sBx(ins));
return 3;
}
}
return 0;
}
/*
* This function must be called before all code loaded.
*/
void kp_optimize_code(ktap_state *ks, int level, ktap_proto *f)
{
int i;
for (i = 0; i < f->sizecode; i++) {
int instr = f->code[i];
ktap_value *k = f->k;
if (GET_OPCODE(instr) == OP_GETTABUP) {
if ((GETARG_B(instr) == 0) && ISK(GETARG_C(instr))) {
ktap_value *field = k + INDEXK(GETARG_C(instr));
if (ttype(field) == KTAP_TSTRING) {
int index = cfunction_cache_getindex(ks,
field);
if (index == -1)
break;
SET_OPCODE(instr, OP_LOAD_GLOBAL);
SETARG_C(instr, index);
f->code[i] = instr;
break;
}
}
}
}
/* continue optimize sub functions */
for (i = 0; i < f->sizep; i++)
kp_optimize_code(ks, level + 1, f->p[i]);
}
/**
* Is the operand a reference to a short string constant?
*/
static int isshortstr(FuncState *fs, int kk) {
if (ISK(kk)) {
Proto *f = fs->f;
kk = INDEXK(kk);
lua_assert(kk >= 0 && kk < f->sizek);
return ttisshrstring(&f->k[kk]);
}
return 0;
}
static int checkArgMode (const Proto *pt, int r, enum OpArgMask mode) {
switch (mode) {
case OpArgN: check(r == 0); break;
case OpArgU: break;
case OpArgR: checkreg(pt, r); break;
case OpArgK:
check(ISK(r) ? INDEXK(r) < pt->sizek : r < pt->maxstacksize);
break;
}
return 1;
}
void RaviCodeGenerator::emit_BITWISE_SHIFT_OP(RaviFunctionDef *def, OpCode op,
int A, int B, int C, int pc) {
bool traced = emit_debug_trace(def, op, pc);
emit_load_base(def);
llvm::Value *ra = emit_gep_register(def, A);
// If the RHS is a constant and we know that LHS is
// and integer then we can optimize the code generation
if (op == OP_RAVI_SHL_II && ISK(C)) {
lua_Integer y = def->p->k[INDEXK(C)].value_.i;
emit_bitwise_shiftl(def, ra, B, y);
} else if (op == OP_RAVI_SHR_II && ISK(C)) {
lua_Integer y = def->p->k[INDEXK(C)].value_.i;
emit_bitwise_shiftl(def, ra, B, -y);
} else {
// RHS is not a constant
llvm::Value *rc = emit_gep_register_or_constant(def, C);
llvm::Value *rb = emit_gep_register_or_constant(def, B);
// Since the Lua OP_SHL and OP_SHR bytecodes
// could invoke metamethods we need to set
// 'savedpc'
switch (op) {
case OP_SHL:
if (!traced) emit_update_savedpc(def, pc);
case OP_RAVI_SHL_II:
CreateCall4(def->builder, def->raviV_op_shlF, def->L, ra, rb, rc);
break;
case OP_SHR:
if (!traced) emit_update_savedpc(def, pc);
case OP_RAVI_SHR_II:
CreateCall4(def->builder, def->raviV_op_shrF, def->L, ra, rb, rc);
break;
default:
fprintf(stderr, "unexpected value of opcode %d\n", (int)op);
abort();
}
}
}
/*
** find a "name" for the RK value 'c'
*/
static void kname (Proto *p, int pc, int c, const char **name) {
if (ISK(c)) { /* is 'c' a constant? */
TValue *kvalue = &p->k[INDEXK(c)];
if (ttisstring(kvalue)) { /* literal constant? */
*name = svalue(kvalue); /* it is its own name */
return;
}
/* else no reasonable name found */
}
else { /* 'c' is a register */
const char *what = getobjname(p, pc, c, name); /* search for 'c' */
if (what && *what == 'c') { /* found a constant name? */
return; /* 'name' already filled */
}
/* else no reasonable name found */
}
*name = "?"; /* no reasonable name found */
}
/*
** find a "name" for the RK value 'c'
*/
void kname2 (LuaProto *p, int pc, int c, std::string& name) {
if (ISK(c)) { /* is 'c' a constant? */
LuaValue *kvalue = &p->constants[INDEXK(c)];
if (kvalue->isString()) { /* literal constant? */
name = kvalue->getString()->c_str(); /* it is its own name */
return;
}
/* else no reasonable name found */
}
else { /* 'c' is a register */
const char *what = getobjname2(p, pc, c, name); /* search for 'c' */
if (what && *what == 'c') { /* found a constant name? */
return; /* 'name' already filled */
}
/* else no reasonable name found */
}
name = "?"; /* no reasonable name found */
}
static void PrintCode(const Proto* f)
{
const Instruction* code=f->code;
int pc,n=f->sizecode;
for (pc=0; pc<n; pc++)
{
Instruction i=code[pc];
OpCode o=GET_OPCODE(i);
int a=GETARG_A(i);
int b=GETARG_B(i);
int c=GETARG_C(i);
int ax=GETARG_Ax(i);
int bx=GETARG_Bx(i);
int sbx=GETARG_sBx(i);
int line=getfuncline(f,pc);
printf("\t%d\t",pc+1);
if (line>0) printf("[%d]\t",line); else printf("[-]\t");
printf("%-9s\t",luaP_opnames[o]);
switch (getOpMode(o))
{
case iABC:
printf("%d",a);
if (getBMode(o)!=OpArgN) printf(" %d",ISK(b) ? (MYK(INDEXK(b))) : b);
if (getCMode(o)!=OpArgN) printf(" %d",ISK(c) ? (MYK(INDEXK(c))) : c);
break;
case iABx:
printf("%d",a);
if (getBMode(o)==OpArgK) printf(" %d",MYK(bx));
if (getBMode(o)==OpArgU) printf(" %d",bx);
break;
case iAsBx:
printf("%d %d",a,sbx);
break;
case iAx:
printf("%d",MYK(ax));
break;
}
switch (o)
{
case OP_LOADK:
printf("\t; "); PrintConstant(f,bx);
break;
case OP_GETUPVAL:
case OP_SETUPVAL:
printf("\t; %s",UPVALNAME(b));
break;
case OP_GETTABUP:
printf("\t; %s",UPVALNAME(b));
if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }
break;
case OP_SETTABUP:
printf("\t; %s",UPVALNAME(a));
if (ISK(b)) { printf(" "); PrintConstant(f,INDEXK(b)); }
if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }
break;
case OP_GETTABLE:
case OP_SELF:
if (ISK(c)) { printf("\t; "); PrintConstant(f,INDEXK(c)); }
break;
case OP_SETTABLE:
case OP_ADD:
case OP_SUB:
case OP_MUL:
case OP_POW:
case OP_DIV:
case OP_IDIV:
case OP_BAND:
case OP_BOR:
case OP_BXOR:
case OP_SHL:
case OP_SHR:
case OP_EQ:
case OP_LT:
case OP_LE:
if (ISK(b) || ISK(c))
{
printf("\t; ");
if (ISK(b)) PrintConstant(f,INDEXK(b)); else printf("-");
printf(" ");
if (ISK(c)) PrintConstant(f,INDEXK(c)); else printf("-");
}
break;
case OP_JMP:
case OP_FORLOOP:
case OP_FORPREP:
case OP_TFORLOOP:
printf("\t; to %d",sbx+pc+2);
break;
case OP_CLOSURE:
printf("\t; %p",VOID(f->p[bx]));
break;
case OP_SETLIST:
if (c==0) printf("\t; %d",(int)code[++pc]); else printf("\t; %d",c);
break;
case OP_EXTRAARG:
printf("\t; "); PrintConstant(f,ax);
break;
default:
break;
}
printf("\n");
}
}
static void PrintCode(const Proto* f)
{
const Instruction* code=f->code;
int pc,n=f->sizecode;
for (pc=0; pc<n; pc++)
{
Instruction i=code[pc];
OpCode o=GET_OPCODE(i);
int a=GETARG_A(i);
int b=GETARG_B(i);
int c=GETARG_C(i);
int bx=GETARG_Bx(i);
int sbx=GETARG_sBx(i);
int line=getline(f,pc);
printf("\t%d\t",pc+1);
if (line>0) printf("[%d]\t",line); else printf("[-]\t");
printf("%-9s\t",luaP_opnames[o]);
switch (getOpMode(o))
{
case iABC:
printf("%d",a);
if (getBMode(o)!=OpArgN) printf(" %d",ISK(b) ? (-1-INDEXK(b)) : b);
if (getCMode(o)!=OpArgN) printf(" %d",ISK(c) ? (-1-INDEXK(c)) : c);
break;
case iABx:
if (getBMode(o)==OpArgK) printf("%d %d",a,-1-bx); else printf("%d %d",a,bx);
break;
case iAsBx:
if (o==OP_JMP) printf("%d",sbx); else printf("%d %d",a,sbx);
break;
}
switch (o)
{
case OP_LOADK:
printf("\t; "); PrintConstant(f,bx);
break;
case OP_GETUPVAL:
case OP_SETUPVAL:
printf("\t; %s", (f->sizeupvalues>0) ? getstr(f->upvalues[b]) : "-");
break;
case OP_GETGLOBAL:
case OP_SETGLOBAL:
printf("\t; %s",svalue(&f->k[bx]));
break;
case OP_GETTABLE:
case OP_SELF:
if (ISK(c)) { printf("\t; "); PrintConstant(f,INDEXK(c)); }
break;
case OP_SETTABLE:
case OP_ADD:
case OP_SUB:
case OP_MUL:
case OP_DIV:
case OP_POW:
case OP_EQ:
case OP_LT:
case OP_LE:
if (ISK(b) || ISK(c))
{
printf("\t; ");
if (ISK(b)) PrintConstant(f,INDEXK(b)); else printf("-");
printf(" ");
if (ISK(c)) PrintConstant(f,INDEXK(c)); else printf("-");
}
break;
case OP_JMP:
case OP_FORLOOP:
case OP_FORPREP:
printf("\t; to %d",sbx+pc+2);
break;
case OP_CLOSURE:
printf("\t; %p",VOID(f->p[bx]));
break;
case OP_SETLIST:
if (c==0) printf("\t; %d",(int)code[++pc]);
else printf("\t; %d",c);
break;
default:
break;
}
printf("\n");
}
}
const char* raviP_instruction_to_str(char *buf, size_t n, Instruction i) {
OpCode o = GET_OPCODE(i);
int a = GETARG_A(i);
int b = GETARG_B(i);
int c = GETARG_C(i);
int ax = GETARG_Ax(i);
int bx = GETARG_Bx(i);
int sbx = GETARG_sBx(i);
snprintf(buf, n, "%s ", luaP_opnames[o]);
switch (getOpMode(o)) {
case iABC:
snprintf(buf+strlen(buf), n-strlen(buf), "A=%d", a);
if (getBMode(o) != OpArgN)
snprintf(buf + strlen(buf), n - strlen(buf), " B=%d", (getBMode(o) == OpArgK && ISK(b)) ? (MYK(INDEXK(b))) : b);
if (getCMode(o) != OpArgN)
snprintf(buf + strlen(buf), n - strlen(buf), " C=%d", (getCMode(o) == OpArgK && ISK(c)) ? (MYK(INDEXK(c))) : c);
break;
case iABx:
snprintf(buf + strlen(buf), n - strlen(buf), "A=%d", a);
if (getBMode(o) == OpArgK)
snprintf(buf + strlen(buf), n - strlen(buf), " Bx=%d", MYK(bx));
if (getBMode(o) == OpArgU)
snprintf(buf + strlen(buf), n - strlen(buf), " Bx=%d", bx);
break;
case iAsBx:
snprintf(buf + strlen(buf), n - strlen(buf), "As=%d Bx=%d", a, sbx);
break;
case iAx:
snprintf(buf + strlen(buf), n - strlen(buf), "Ax=%d", MYK(ax));
break;
}
return buf;
}
