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#ifndef _RAR_VM_
#define _RAR_VM_
#define VM_STANDARDFILTERS
#ifndef SFX_MODULE
#define VM_OPTIMIZE
#endif
#define VM_MEMSIZE 0x40000
#define VM_MEMMASK (VM_MEMSIZE-1)
#define VM_GLOBALMEMADDR 0x3C000
#define VM_GLOBALMEMSIZE 0x2000
#define VM_FIXEDGLOBALSIZE 64
enum VM_Commands
{
VM_MOV, VM_CMP, VM_ADD, VM_SUB, VM_JZ, VM_JNZ, VM_INC, VM_DEC,
VM_JMP, VM_XOR, VM_AND, VM_OR, VM_TEST, VM_JS, VM_JNS, VM_JB,
VM_JBE, VM_JA, VM_JAE, VM_PUSH, VM_POP, VM_CALL, VM_RET, VM_NOT,
VM_SHL, VM_SHR, VM_SAR, VM_NEG, VM_PUSHA,VM_POPA, VM_PUSHF,VM_POPF,
VM_MOVZX,VM_MOVSX,VM_XCHG, VM_MUL, VM_DIV, VM_ADC, VM_SBB, VM_PRINT,
#ifdef VM_OPTIMIZE
VM_MOVB, VM_MOVD, VM_CMPB, VM_CMPD,
VM_ADDB, VM_ADDD, VM_SUBB, VM_SUBD, VM_INCB, VM_INCD, VM_DECB, VM_DECD,
VM_NEGB, VM_NEGD,
#endif
VM_STANDARD
};
enum VM_StandardFilters {
VMSF_NONE, VMSF_E8, VMSF_E8E9, VMSF_ITANIUM, VMSF_RGB, VMSF_AUDIO,
VMSF_DELTA, VMSF_UPCASE
};
enum VM_Flags {VM_FC=1,VM_FZ=2,VM_FS=0x80000000};
enum VM_OpType {VM_OPREG,VM_OPINT,VM_OPREGMEM,VM_OPNONE};
struct VM_PreparedOperand
{
VM_OpType Type;
uint Data;
uint Base;
uint *Addr;
};
struct VM_PreparedCommand
{
VM_Commands OpCode;
bool ByteMode;
VM_PreparedOperand Op1,Op2;
};
struct VM_PreparedProgram
{
VM_PreparedProgram()
{
AltCmd=NULL;
FilteredDataSize=0;
CmdCount=0;
}
Array<VM_PreparedCommand> Cmd;
VM_PreparedCommand *AltCmd;
int CmdCount;
Array<byte> GlobalData;
Array<byte> StaticData; // static data contained in DB operators
uint InitR[7];
byte *FilteredData;
uint FilteredDataSize;
};
class RarVM:private BitInput
{
private:
inline uint GetValue(bool ByteMode,uint *Addr);
inline void SetValue(bool ByteMode,uint *Addr,uint Value);
inline uint* GetOperand(VM_PreparedOperand *CmdOp);
void DecodeArg(VM_PreparedOperand &Op,bool ByteMode);
#ifdef VM_OPTIMIZE
void Optimize(VM_PreparedProgram *Prg);
#endif
bool ExecuteCode(VM_PreparedCommand *PreparedCode,uint CodeSize);
#ifdef VM_STANDARDFILTERS
VM_StandardFilters IsStandardFilter(byte *Code,uint CodeSize);
void ExecuteStandardFilter(VM_StandardFilters FilterType);
uint FilterItanium_GetBits(byte *Data,int BitPos,int BitCount);
void FilterItanium_SetBits(byte *Data,uint BitField,int BitPos,int BitCount);
#endif
byte *Mem;
uint R[8];
uint Flags;
public:
RarVM();
~RarVM();
void Init();
void Prepare(byte *Code,uint CodeSize,VM_PreparedProgram *Prg);
void Execute(VM_PreparedProgram *Prg);
void SetLowEndianValue(uint *Addr,uint Value);
void SetMemory(uint Pos,byte *Data,uint DataSize);
static uint ReadData(BitInput &Inp);
};
#endif
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