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#include "vmrunner.hpp"
#include "coreshared.hpp"
#include "fncwrapper.hpp"
#include <cstdlib>
#include <cstdio>
blrScriptVM *vm;
callStack<Idata> callStk;
unsigned getHash(const char *s)
{
unsigned r=5381;char c;
while((c=(*s++)))r=((r<<5)+r)+c;
return r;
}
Idata& blrScriptVM::fetchData(SPara para,bool forcerw)
{
static Idata cret;
switch (para.type)
{
case 0:
if(forcerw)throw;
cret.i()=para.data.i;cret.type=0;
return cret;
case 1:
if(forcerw)throw;
cret.r()=para.data.r;cret.type=1;
return cret;
case 2:
return ir[para.data.i];
case 3:
return rr[para.data.i];
case 4:
return ia[para.data.i];
case 5:
return ra[para.data.i];
case 6:
return ia[ir[para.data.i].i()];
case 7:
return ra[ir[para.data.i].i()];
default:
throw;
}
}
int blrScriptVM::mgetc()
{
if(cbyte-sbyte<fsize)
{++cbyte;return (int)(*(cbyte-1));}
else return -1;
}
void blrScriptVM::readPara(SPara *para)
{
para->type=mgetc();
para->data.d=0;
int l=0;
switch(para->type)
{
case 1: l=8;break;
case 0: case 4: case 5: l=4;break;
case 2: case 3: case 6: case 7: l=1;break;
default: break;
}
for(int i=0;i<l;++i)
{
para->data.d<<=8LL;
int a=mgetc();
para->data.d|=(unsigned long long)a;
}
}
int blrScriptVM::loadLSBFromMemory(const char *ptr,DWORD size)
{
cbyte=sbyte=(const unsigned char*)ptr;fsize=size;
int ibyt=0,infunc=0;
while(~(ibyt=mgetc()))
{
++ic;inst[ic].id=ibyt;
switch(inst[ic].id)
{
case 0xFF: case 0x02:
{
int nl=mgetc();
if(nl==-1)return 1;
if(inst[ic].id==0xFF){if(infunc)return 1;else infunc=1;}
if(inst[ic].id==0x02)if(!infunc)return 1;
inst[ic].para1.fnc=(char*)calloc(sizeof(char),nl+1);
inst[ic].para1.type=8;
for(int i=0;i<nl;++i)inst[ic].para1.fnc[i]=mgetc();
if(inst[ic].id==0xFF)
{
fncent[fncnt].pos=ic;
fncent[fncnt++].hash=getHash(inst[ic].para1.fnc);
}
}
break;
case 0x00: break;
case 0xFE:
if(!infunc)return 1;
infunc=0;
break;
case 0x0F:
if(!infunc)return 1;
break;
case 0x01: case 0x0C: case 0x0D:
case 0x0E: case 0x11: case 0x12:
case 0x13: case 0x14: case 0x15:
case 0x16: case 0x21:
if(!infunc)return 1;
readPara(&inst[ic].para1);
break;
case 0x03: case 0x04: case 0x05:
case 0x06: case 0x07: case 0x08:
case 0x09: case 0x0A: case 0x0B:
case 0x22: case 0x23:
if(!infunc)return 1;
readPara(&inst[ic].para1);
readPara(&inst[ic].para2);
break;
}
}
return 0;
}
int blrScriptVM::getInstCount(){return pinst;}
void blrScriptVM::vmRunFunction(const char *fncnym)
{
int nymhash=getHash(fncnym),cur=0;pinst=0;
for(int i=0;i<fncnt;++i)if(nymhash==fncent[i].hash){cur=fncent[i].pos;break;}
while(inst[cur].id!=0xFE)
{
int jmp=0;++pinst;
//printf("@offset %d, instId 0x%x\n",cur,inst[cur].id);
rr[100].r()=0.01667;
switch(inst[cur].id)
{
case 0x00:
//no-op
break;
case 0xFF:
//no-op
break;
case 0x01:
callStk.push(fetchData(inst[cur].para1));
break;
case 0x02:
callFnc(inst[cur].para1.fnc);
break;
case 0x03:
fetchData(inst[cur].para1,true)=fetchData(inst[cur].para2);
break;
case 0x04:
fetchData(inst[cur].para1,true)+=fetchData(inst[cur].para2);
break;
case 0x05:
fetchData(inst[cur].para1,true)-=fetchData(inst[cur].para2);
break;
case 0x06:
fetchData(inst[cur].para1,true)*=fetchData(inst[cur].para2);
break;
case 0x07:
fetchData(inst[cur].para1,true)/=fetchData(inst[cur].para2);
break;
case 0x08:
fetchData(inst[cur].para1,true)%=fetchData(inst[cur].para2);
break;
case 0x09:
fetchData(inst[cur].para1,true)&=fetchData(inst[cur].para2);
break;
case 0x0A:
fetchData(inst[cur].para1,true)|=fetchData(inst[cur].para2);
break;
case 0x0B:
fetchData(inst[cur].para1,true)^=fetchData(inst[cur].para2);
break;
case 0x0C:
fetchData(inst[cur].para1,true)=~fetchData(inst[cur].para1,true);
break;
case 0x0D:
++fetchData(inst[cur].para1,true);
break;
case 0x0E:
--fetchData(inst[cur].para1,true);
break;
case 0x0F:
callStk.clear();
break;
case 0x11:
switch (fetchData(inst[cur].para1,true).type)
{
case 0:
fetchData(inst[cur].para1,true)=
fetchData(inst[cur].para1,true).ltz()?ione:izero;
break;
case 1:
fetchData(inst[cur].para1,true)=
fetchData(inst[cur].para1,true).ltz()?rone:rzero;
break;
}
break;
case 0x12:
switch (fetchData(inst[cur].para1,true).type)
{
case 0:
fetchData(inst[cur].para1,true)=
fetchData(inst[cur].para1,true).elz()?ione:izero;
break;
case 1:
fetchData(inst[cur].para1,true)=
fetchData(inst[cur].para1,true).elz()?rone:rzero;
break;
}
break;
case 0x13:
switch (fetchData(inst[cur].para1,true).type)
{
case 0:
fetchData(inst[cur].para1,true)=
fetchData(inst[cur].para1,true).gtz()?ione:izero;
break;
case 1:
fetchData(inst[cur].para1,true)=
fetchData(inst[cur].para1,true).gtz()?rone:rzero;
break;
}
break;
case 0x14:
switch (fetchData(inst[cur].para1,true).type)
{
case 0:
fetchData(inst[cur].para1,true)=
fetchData(inst[cur].para1,true).egz()?ione:izero;
break;
case 1:
fetchData(inst[cur].para1,true)=
fetchData(inst[cur].para1,true).egz()?rone:rzero;
break;
}
break;
case 0x15:
switch (fetchData(inst[cur].para1,true).type)
{
case 0:
fetchData(inst[cur].para1,true)=
fetchData(inst[cur].para1,true).eqz()?ione:izero;
break;
case 1:
fetchData(inst[cur].para1,true)=
fetchData(inst[cur].para1,true).eqz()?rone:rzero;
break;
}
break;
case 0x16:
switch (fetchData(inst[cur].para1,true).type)
{
case 0:
fetchData(inst[cur].para1,true)=
fetchData(inst[cur].para1,true).nez()?ione:izero;
break;
case 1:
fetchData(inst[cur].para1,true)=
fetchData(inst[cur].para1,true).nez()?rone:rzero;
break;
}
break;
case 0x21:
cur=fetchData(inst[cur].para1).i();
jmp=1;
break;
case 0x22:
if(fetchData(inst[cur].para1).eqz())
cur=fetchData(inst[cur].para2).i(),jmp=1;
break;
case 0x23:
if(fetchData(inst[cur].para1).nez())
cur=fetchData(inst[cur].para2).i(),jmp=1;
break;
}
if(!jmp)++cur;
}
}
void blrScriptVM::vmSetRetValf(double v){rr[102].r()=v;}
void blrScriptVM::vmSetRetVald(int v){ir[100].i()=v;}
void blrScriptVM::vmInit(unsigned int seed)
{
for(int i=0;i<103;++i)rr[i].type=1;
for(int i=0;i<101;++i)ir[i].type=0;
for(int i=0;i<10000;++i)ra[i].type=1,ia[i].type=0;
re=new smRandomEngine;
re->setSeed(seed);
}
void blrScriptVM::vmDeinit()
{
delete re;
}
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